From 0abce523bfbc0712469d47c3494b5eb05aab6072 Mon Sep 17 00:00:00 2001 From: Andrea Bogazzi Date: Sat, 15 Oct 2022 23:53:15 +0200 Subject: [PATCH 1/5] added 2 tests --- dist/fabric.d.ts | 2 + dist/fabric.d.ts.map | 1 + dist/fabric.js | 58358 +++++++++++----------- dist/fabric.js.map | 1 + dist/fabric.min.d.ts | 2 + dist/fabric.min.d.ts.map | 1 + test/visual/assets/polygons-rounded.svg | 8 + test/visual/assets/polygons.svg | 8 + test/visual/golden/polygons-rounded.png | Bin 0 -> 64010 bytes test/visual/golden/polygons.png | Bin 0 -> 69163 bytes test/visual/svg_import.js | 4 +- 11 files changed, 28047 insertions(+), 30338 deletions(-) create mode 100644 dist/fabric.d.ts create mode 100644 dist/fabric.d.ts.map create mode 100644 dist/fabric.js.map create mode 100644 dist/fabric.min.d.ts create mode 100644 dist/fabric.min.d.ts.map create mode 100644 test/visual/assets/polygons-rounded.svg create mode 100644 test/visual/assets/polygons.svg create mode 100644 test/visual/golden/polygons-rounded.png create mode 100644 test/visual/golden/polygons.png diff --git a/dist/fabric.d.ts b/dist/fabric.d.ts new file mode 100644 index 00000000000..e4d4eb02702 --- /dev/null +++ b/dist/fabric.d.ts @@ -0,0 +1,2 @@ +export {}; +//# sourceMappingURL=fabric.d.ts.map \ No newline at end of file diff --git a/dist/fabric.d.ts.map b/dist/fabric.d.ts.map new file mode 100644 index 00000000000..b53435c281f --- /dev/null +++ b/dist/fabric.d.ts.map @@ -0,0 +1 @@ +{"version":3,"file":"fabric.d.ts","sourceRoot":"","sources":["../index.js","../src/config.ts","../src/cache.ts","../src/typedefs.ts","../src/constants.ts","../HEADER.js","../src/mixins/observable.mixin.ts","../src/mixins/collection.mixin.ts","../src/mixins/shared_methods.mixin.ts","../src/util/misc/cos.ts","../src/util/misc/sin.ts","../src/point.class.ts","../src/util/misc/vectors.ts","../src/util/misc/radiansDegreesConversion.ts","../src/util/misc/rotatePoint.ts","../src/util/internals/getRandomInt.ts","../src/util/internals/ifNaN.ts","../src/util/internals/removeFromArray.ts","../src/util/internals/index.ts","../src/util/misc/projectStroke.ts","../src/util/misc/matrix.ts","../src/util/lang_object.ts","../src/util/misc/textStyles.ts","../src/util/misc/dom.ts","../src/util/misc/toFixed.ts","../src/util/misc/svgParsing.ts","../src/util/misc/findScaleTo.ts","../src/util/misc/capValue.ts","../src/util/misc/boundingBoxFromPoints.ts","../src/util/misc/objectTransforms.ts","../src/__types__.ts","../src/util/misc/planeChange.ts","../src/util/lang_string.ts","../src/util/misc/objectEnlive.ts","../src/util/misc/pick.ts","../src/parser/getSvgRegex.ts","../src/parser/constants.ts","../src/util/path.ts","../src/util/dom_style.ts","../src/util/dom_request.ts","../src/util/dom_event.ts","../src/util/dom_misc.ts","../src/util/misc/isTransparent.ts","../src/util/misc/mergeClipPaths.ts","../src/util/anim_ease.ts","../src/color/color_map.ts","../src/color/constants.ts","../src/color/util.ts","../src/color/color.class.ts","../src/color/index.ts","../src/util/animation_registry.ts","../src/util/animate.ts","../src/util/animate_color.ts","../src/util/lang_class.ts","../src/util/misc/misc.ts","../src/parser/elements_parser.ts","../src/parser/getCSSRules.ts","../src/parser/getMultipleNodes.ts","../src/parser/elementById.ts","../src/parser/recursivelyParseGradientsXlink.ts","../src/parser/getGradientDefs.ts","../src/parser/applyViewboxTransform.ts","../src/parser/hasAncestorWithNodeName.ts","../src/parser/parseElements.ts","../src/parser/parseUseDirectives.ts","../src/parser/parseSVGDocument.ts","../src/parser/loadSVGFromString.ts","../src/parser/loadSVGFromURL.ts","../src/parser/selectorMatches.ts","../src/parser/doesSomeParentMatch.ts","../src/parser/elementMatchesRule.ts","../src/parser/getGlobalStylesForElement.ts","../src/parser/normalizeAttr.ts","../src/parser/rotateMatrix.ts","../src/parser/scaleMatrix.ts","../src/parser/skewMatrix.ts","../src/parser/translateMatrix.ts","../src/parser/parseTransformAttribute.ts","../src/parser/normalizeValue.ts","../src/parser/parseFontDeclaration.ts","../src/parser/parseStyleObject.ts","../src/parser/parseStyleString.ts","../src/parser/parseStyleAttribute.ts","../src/parser/setStrokeFillOpacity.ts","../src/parser/parseAttributes.ts","../src/parser/parsePointsAttribute.ts","../src/parser/index.ts","../src/intersection.class.ts","../src/gradient/constants.ts","../src/gradient/typedefs.ts","../src/gradient/parser/misc.ts","../src/parser/percent.ts","../src/gradient/parser/parseColorStops.ts","../src/gradient/parser/parseCoords.ts","../src/gradient/parser/index.ts","../src/gradient/gradient.class.ts","../src/gradient/index.ts","../src/pattern.class.ts","../src/shadow.class.ts","../src/static_canvas.class.ts","../src/canvas.class.ts","../src/util/fireEvent.ts","../src/mixins/canvas_events.mixin.ts","../src/mixins/canvas_grouping.mixin.ts","../src/mixins/canvas_dataurl_exporter.mixin.ts","../src/mixins/canvas_serialization.mixin.ts","../src/mixins/canvas_gestures.mixin.ts","../src/shapes/object.class.ts","../src/mixins/object_origin.mixin.ts","../src/mixins/object_geometry.mixin.ts","../src/mixins/object_ancestry.mixin.ts","../src/mixins/object_stacking.mixin.ts","../src/mixins/object.svg_export.ts","../src/mixins/stateful.mixin.ts","../src/mixins/object_interactivity.mixin.ts","../src/mixins/animation.mixin.ts","../src/shapes/line.class.ts","../src/shapes/circle.class.ts","../src/shapes/triangle.class.ts","../src/shapes/ellipse.class.ts","../src/shapes/rect.class.ts","../src/shapes/polyline.class.ts","../src/shapes/polygon.class.ts","../src/shapes/path.class.ts","../src/shapes/group.class.ts","../src/shapes/active_selection.class.ts","../src/shapes/image.class.ts","../src/mixins/object_straightening.mixin.ts","../src/filters/WebGLProbe.ts","../src/filters/webgl_backend.class.ts","../src/filters/2d_backend.class.ts","../src/filters/base_filter.class.ts","../src/filters/colormatrix_filter.class.ts","../src/filters/brightness_filter.class.ts","../src/filters/convolute_filter.class.ts","../src/filters/grayscale_filter.class.ts","../src/filters/invert_filter.class.ts","../src/filters/noise_filter.class.ts","../src/filters/pixelate_filter.class.ts","../src/filters/removecolor_filter.class.ts","../src/filters/filter_generator.ts","../src/filters/blendcolor_filter.class.ts","../src/filters/blendimage_filter.class.ts","../src/filters/resize_filter.class.ts","../src/filters/contrast_filter.class.ts","..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\ No newline at end of file diff --git a/dist/fabric.js b/dist/fabric.js index 9b7bf655d2a..bb04ca10feb 100644 --- a/dist/fabric.js +++ b/dist/fabric.js @@ -1,31077 +1,28761 @@ -/* build: `node build.js modules=ALL exclude=gestures,accessors,erasing requirejs minifier=uglifyjs` */ -/*! Fabric.js Copyright 2008-2015, Printio (Juriy Zaytsev, Maxim Chernyak) */ - -var fabric = fabric || { version: '5.1.0' }; +'use strict'; + +class BaseConfiguration { + constructor() { + /** + * Browser-specific constant to adjust CanvasRenderingContext2D.shadowBlur value, + * which is unitless and not rendered equally across browsers. + * + * Values that work quite well (as of October 2017) are: + * - Chrome: 1.5 + * - Edge: 1.75 + * - Firefox: 0.9 + * - Safari: 0.95 + * + * @since 2.0.0 + * @type Number + * @default 1 + */ + this.browserShadowBlurConstant = 1; + /** + * Pixel per Inch as a default value set to 96. Can be changed for more realistic conversion. + */ + this.DPI = 96; + /** + * Device Pixel Ratio + * @see https://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/HTML-canvas-guide/SettingUptheCanvas/SettingUptheCanvas.html + */ + this.devicePixelRatio = 1; + /** + * Pixel limit for cache canvases. 1Mpx , 4Mpx should be fine. + * @since 1.7.14 + * @type Number + * @default + */ + this.perfLimitSizeTotal = 2097152; + /** + * Pixel limit for cache canvases width or height. IE fixes the maximum at 5000 + * @since 1.7.14 + * @type Number + * @default + */ + this.maxCacheSideLimit = 4096; + /** + * Lowest pixel limit for cache canvases, set at 256PX + * @since 1.7.14 + * @type Number + * @default + */ + this.minCacheSideLimit = 256; + /** + * When 'true', style information is not retained when copy/pasting text, making + * pasted text use destination style. + * Defaults to 'false'. + * @type Boolean + * @default + * @deprecated + */ + this.disableStyleCopyPaste = false; + /** + * Enable webgl for filtering picture is available + * A filtering backend will be initialized, this will both take memory and + * time since a default 2048x2048 canvas will be created for the gl context + * @since 2.0.0 + * @type Boolean + * @default + */ + this.enableGLFiltering = true; + /** + * if webgl is enabled and available, textureSize will determine the size + * of the canvas backend + * + * In order to support old hardware set to `2048` to avoid OOM + * + * @since 2.0.0 + * @type Number + * @default + */ + this.textureSize = 4096; + /** + * Skip performance testing of setupGLContext and force the use of putImageData that seems to be the one that works best on + * Chrome + old hardware. if your users are experiencing empty images after filtering you may try to force this to true + * this has to be set before instantiating the filtering backend ( before filtering the first image ) + * @type Boolean + * @default false + */ + this.forceGLPutImageData = false; + /** + * If disabled boundsOfCurveCache is not used. For apps that make heavy usage of pencil drawing probably disabling it is better + * @default true + */ + this.cachesBoundsOfCurve = true; + /** + * Map of font files + * Map of font files + */ + this.fontPaths = {}; + /** + * Defines the number of fraction digits to use when serializing object values. + * Used in exporting methods (`toObject`, `toJSON`, `toSVG`) + * You can use it to increase/decrease precision of such values like left, top, scaleX, scaleY, etc. + */ + this.NUM_FRACTION_DIGITS = 4; + } +} +class Configuration extends BaseConfiguration { + constructor(config) { + super(); + this.configure(config); + } + configure(config = {}) { + Object.assign(this, config); + } + /** + * Map of font files + */ + addFonts(paths = {}) { + this.fontPaths = Object.assign(Object.assign({}, this.fontPaths), paths); + } + removeFonts(fontFamilys = []) { + fontFamilys.forEach((fontFamily) => { + delete this.fontPaths[fontFamily]; + }); + } + clearFonts() { + this.fontPaths = {}; + } + restoreDefaults(keys) { + const defaults = new BaseConfiguration(); + const config = (keys === null || keys === void 0 ? void 0 : keys.reduce((acc, key) => { + acc[key] = defaults[key]; + return acc; + }, {})) || defaults; + this.configure(config); + } +} +const config = new Configuration(); + +class Cache { + constructor() { + /** + * Cache of widths of chars in text rendering. + */ + this.charWidthsCache = {}; + /** + * This object contains the result of arc to bezier conversion for faster retrieving if the same arc needs to be converted again. + * It was an internal variable, is accessible since version 2.3.4 + */ + this.arcToSegmentsCache = {}; + /** + * This object keeps the results of the boundsOfCurve calculation mapped by the joined arguments necessary to calculate it. + * It does speed up calculation, if you parse and add always the same paths, but in case of heavy usage of freedrawing + * you do not get any speed benefit and you get a big object in memory. + * The object was a private variable before, while now is appended to the lib so that you have access to it and you + * can eventually clear it. + * It was an internal variable, is accessible since version 2.3.4 + */ + this.boundsOfCurveCache = {}; + } + /** + * @return {Object} reference to cache + */ + getFontCache({ fontFamily, fontStyle, fontWeight, }) { + fontFamily = fontFamily.toLowerCase(); + if (!this.charWidthsCache[fontFamily]) { + this.charWidthsCache[fontFamily] = {}; + } + const fontCache = this.charWidthsCache[fontFamily]; + const cacheKey = `${fontStyle.toLowerCase()}_${(fontWeight + '').toLowerCase()}`; + if (!fontCache[cacheKey]) { + fontCache[cacheKey] = {}; + } + return fontCache[cacheKey]; + } + /** + * Clear char widths cache for the given font family or all the cache if no + * fontFamily is specified. + * Use it if you know you are loading fonts in a lazy way and you are not waiting + * for custom fonts to load properly when adding text objects to the canvas. + * If a text object is added when its own font is not loaded yet, you will get wrong + * measurement and so wrong bounding boxes. + * After the font cache is cleared, either change the textObject text content or call + * initDimensions() to trigger a recalculation + * @memberOf fabric.util + * @param {String} [fontFamily] font family to clear + */ + clearFontCache(fontFamily) { + fontFamily = (fontFamily || '').toLowerCase(); + if (!fontFamily) { + this.charWidthsCache = {}; + } + else if (this.charWidthsCache[fontFamily]) { + delete this.charWidthsCache[fontFamily]; + } + } + /** + * Given current aspect ratio, determines the max width and height that can + * respect the total allowed area for the cache. + * @memberOf fabric.util + * @param {number} ar aspect ratio + * @return {number[]} Limited dimensions X and Y + */ + limitDimsByArea(ar) { + const { perfLimitSizeTotal } = config; + const roughWidth = Math.sqrt(perfLimitSizeTotal * ar); + // we are not returning a point on purpose, to avoid circular dependencies + // this is an internal utility + return [ + Math.floor(roughWidth), + Math.floor(perfLimitSizeTotal / roughWidth), + ]; + } +} +const cache = new Cache(); + +var version = "5.1.0"; + +function noop() { } +const halfPI = Math.PI / 2; +const twoMathPi = Math.PI * 2; +const PiBy180 = Math.PI / 180; +const iMatrix = Object.freeze([1, 0, 0, 1, 0, 0]); +const DEFAULT_SVG_FONT_SIZE = 16; +/* "magic number" for bezier approximations of arcs (http://itc.ktu.lt/itc354/Riskus354.pdf) */ +const kRect = 1 - 0.5522847498; + +var fabric$1 = fabric$1 || { + version: version, + config, + cache, + iMatrix, +}; if (typeof exports !== 'undefined') { - exports.fabric = fabric; + exports.fabric = fabric$1; } -/* _AMD_START_ */ else if (typeof define === 'function' && define.amd) { - define([], function() { return fabric; }); + /* _AMD_START_ */ + define([], function () { + return fabric$1; + }); } /* _AMD_END_ */ if (typeof document !== 'undefined' && typeof window !== 'undefined') { - if (document instanceof (typeof HTMLDocument !== 'undefined' ? HTMLDocument : Document)) { - fabric.document = document; - } - else { - fabric.document = document.implementation.createHTMLDocument(''); - } - fabric.window = window; + if (document instanceof + (typeof HTMLDocument !== 'undefined' ? HTMLDocument : Document)) { + fabric$1.document = document; + } + else { + fabric$1.document = document.implementation.createHTMLDocument(''); + } + fabric$1.window = window; + window.fabric = fabric$1; } else { - // assume we're running under node.js when document/window are not present - var jsdom = require('jsdom'); - var virtualWindow = new jsdom.JSDOM( - decodeURIComponent('%3C!DOCTYPE%20html%3E%3Chtml%3E%3Chead%3E%3C%2Fhead%3E%3Cbody%3E%3C%2Fbody%3E%3C%2Fhtml%3E'), - { - features: { - FetchExternalResources: ['img'] - }, - resources: 'usable' + // assume we're running under node.js when document/window are not present + var jsdom = require('jsdom'); + var virtualWindow = new jsdom.JSDOM(decodeURIComponent('%3C!DOCTYPE%20html%3E%3Chtml%3E%3Chead%3E%3C%2Fhead%3E%3Cbody%3E%3C%2Fbody%3E%3C%2Fhtml%3E'), { + features: { + FetchExternalResources: ['img'], + }, + resources: 'usable', }).window; - fabric.document = virtualWindow.document; - fabric.jsdomImplForWrapper = require('jsdom/lib/jsdom/living/generated/utils').implForWrapper; - fabric.nodeCanvas = require('jsdom/lib/jsdom/utils').Canvas; - fabric.window = virtualWindow; - DOMParser = fabric.window.DOMParser; + fabric$1.document = virtualWindow.document; + fabric$1.jsdomImplForWrapper = + require('jsdom/lib/jsdom/living/generated/utils').implForWrapper; + fabric$1.nodeCanvas = require('jsdom/lib/jsdom/utils').Canvas; + fabric$1.window = virtualWindow; + global.DOMParser = fabric$1.window.DOMParser; } - /** * True when in environment that supports touch events * @type boolean */ -fabric.isTouchSupported = 'ontouchstart' in fabric.window || 'ontouchstart' in fabric.document || - (fabric.window && fabric.window.navigator && fabric.window.navigator.maxTouchPoints > 0); - +fabric$1.isTouchSupported = + 'ontouchstart' in fabric$1.window || + 'ontouchstart' in fabric$1.document || + (fabric$1.window && + fabric$1.window.navigator && + fabric$1.window.navigator.maxTouchPoints > 0); /** * True when in environment that's probably Node.js * @type boolean */ -fabric.isLikelyNode = typeof Buffer !== 'undefined' && - typeof window === 'undefined'; - +fabric$1.isLikelyNode = + typeof Buffer !== 'undefined' && typeof window === 'undefined'; /* _FROM_SVG_START_ */ /** * Attributes parsed from all SVG elements * @type array */ -fabric.SHARED_ATTRIBUTES = [ - 'display', - 'transform', - 'fill', 'fill-opacity', 'fill-rule', - 'opacity', - 'stroke', 'stroke-dasharray', 'stroke-linecap', 'stroke-dashoffset', - 'stroke-linejoin', 'stroke-miterlimit', - 'stroke-opacity', 'stroke-width', - 'id', 'paint-order', 'vector-effect', - 'instantiated_by_use', 'clip-path', +fabric$1.SHARED_ATTRIBUTES = [ + 'display', + 'transform', + 'fill', + 'fill-opacity', + 'fill-rule', + 'opacity', + 'stroke', + 'stroke-dasharray', + 'stroke-linecap', + 'stroke-dashoffset', + 'stroke-linejoin', + 'stroke-miterlimit', + 'stroke-opacity', + 'stroke-width', + 'id', + 'paint-order', + 'vector-effect', + 'instantiated_by_use', + 'clip-path', ]; /* _FROM_SVG_END_ */ - -/** - * Pixel per Inch as a default value set to 96. Can be changed for more realistic conversion. - */ -fabric.DPI = 96; -fabric.reNum = '(?:[-+]?(?:\\d+|\\d*\\.\\d+)(?:[eE][-+]?\\d+)?)'; -fabric.commaWsp = '(?:\\s+,?\\s*|,\\s*)'; -fabric.rePathCommand = /([-+]?((\d+\.\d+)|((\d+)|(\.\d+)))(?:[eE][-+]?\d+)?)/ig; -fabric.reNonWord = /[ \n\.,;!\?\-]/; -fabric.fontPaths = { }; -fabric.iMatrix = [1, 0, 0, 1, 0, 0]; -fabric.svgNS = 'http://www.w3.org/2000/svg'; - -/** - * Pixel limit for cache canvases. 1Mpx , 4Mpx should be fine. - * @since 1.7.14 - * @type Number - * @default - */ -fabric.perfLimitSizeTotal = 2097152; - -/** - * Pixel limit for cache canvases width or height. IE fixes the maximum at 5000 - * @since 1.7.14 - * @type Number - * @default - */ -fabric.maxCacheSideLimit = 4096; - -/** - * Lowest pixel limit for cache canvases, set at 256PX - * @since 1.7.14 - * @type Number - * @default - */ -fabric.minCacheSideLimit = 256; - /** - * Cache Object for widths of chars in text rendering. + * @todo move to config when window is exported */ -fabric.charWidthsCache = { }; - -/** - * if webgl is enabled and available, textureSize will determine the size - * of the canvas backend - * @since 2.0.0 - * @type Number - * @default - */ -fabric.textureSize = 2048; - -/** - * When 'true', style information is not retained when copy/pasting text, making - * pasted text use destination style. - * Defaults to 'false'. - * @type Boolean - * @default - */ -fabric.disableStyleCopyPaste = false; - -/** - * Enable webgl for filtering picture is available - * A filtering backend will be initialized, this will both take memory and - * time since a default 2048x2048 canvas will be created for the gl context - * @since 2.0.0 - * @type Boolean - * @default - */ -fabric.enableGLFiltering = true; - -/** - * Device Pixel Ratio - * @see https://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/HTML-canvas-guide/SettingUptheCanvas/SettingUptheCanvas.html - */ -fabric.devicePixelRatio = fabric.window.devicePixelRatio || - fabric.window.webkitDevicePixelRatio || - fabric.window.mozDevicePixelRatio || - 1; -/** - * Browser-specific constant to adjust CanvasRenderingContext2D.shadowBlur value, - * which is unitless and not rendered equally across browsers. - * - * Values that work quite well (as of October 2017) are: - * - Chrome: 1.5 - * - Edge: 1.75 - * - Firefox: 0.9 - * - Safari: 0.95 - * - * @since 2.0.0 - * @type Number - * @default 1 - */ -fabric.browserShadowBlurConstant = 1; +config.configure({ + devicePixelRatio: fabric$1.window.devicePixelRatio || + fabric$1.window.webkitDevicePixelRatio || + fabric$1.window.mozDevicePixelRatio || + 1, +}); -/** - * This object contains the result of arc to bezier conversion for faster retrieving if the same arc needs to be converted again. - * It was an internal variable, is accessible since version 2.3.4 - */ -fabric.arcToSegmentsCache = { }; +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + /** + * @private + * @param {String} eventName + * @param {Function} handler + */ + function _removeEventListener(eventName, handler) { + if (!this.__eventListeners[eventName]) { + return; + } + var eventListener = this.__eventListeners[eventName]; + if (handler) { + eventListener[eventListener.indexOf(handler)] = false; + } + else { + eventListener.fill(false); + } + } + /** + * Observes specified event + * @memberOf fabric.Observable + * @alias on + * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) + * @param {Function} handler Function that receives a notification when an event of the specified type occurs + * @return {Function} disposer + */ + function on(eventName, handler) { + if (!this.__eventListeners) { + this.__eventListeners = {}; + } + // one object with key/value pairs was passed + if (arguments.length === 1) { + for (var prop in eventName) { + this.on(prop, eventName[prop]); + } + } + else { + if (!this.__eventListeners[eventName]) { + this.__eventListeners[eventName] = []; + } + this.__eventListeners[eventName].push(handler); + } + return off.bind(this, eventName, handler); + } + function _once(eventName, handler) { + var _handler = function () { + handler.apply(this, arguments); + this.off(eventName, _handler); + }.bind(this); + this.on(eventName, _handler); + return _handler; + } + /** + * Observes specified event **once** + * @memberOf fabric.Observable + * @alias once + * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) + * @param {Function} handler Function that receives a notification when an event of the specified type occurs + * @return {Function} disposer + */ + function once(eventName, handler) { + // one object with key/value pairs was passed + if (arguments.length === 1) { + var handlers = {}; + for (var prop in eventName) { + handlers[prop] = _once.call(this, prop, eventName[prop]); + } + return off.bind(this, handlers); + } + else { + var _handler = _once.call(this, eventName, handler); + return off.bind(this, eventName, _handler); + } + } + /** + * Stops event observing for a particular event handler. Calling this method + * without arguments removes all handlers for all events + * @memberOf fabric.Observable + * @alias off + * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) + * @param {Function} handler Function to be deleted from EventListeners + */ + function off(eventName, handler) { + if (!this.__eventListeners) { + return; + } + // remove all key/value pairs (event name -> event handler) + if (arguments.length === 0) { + for (eventName in this.__eventListeners) { + _removeEventListener.call(this, eventName); + } + } + // one object with key/value pairs was passed + else if (typeof eventName === 'object' && typeof handler === 'undefined') { + for (var prop in eventName) { + _removeEventListener.call(this, prop, eventName[prop]); + } + } + else { + _removeEventListener.call(this, eventName, handler); + } + } + /** + * Fires event with an optional options object + * @memberOf fabric.Observable + * @param {String} eventName Event name to fire + * @param {Object} [options] Options object + */ + function fire(eventName, options) { + if (!this.__eventListeners) { + return; + } + var listenersForEvent = this.__eventListeners[eventName]; + if (!listenersForEvent) { + return; + } + for (var i = 0, len = listenersForEvent.length; i < len; i++) { + listenersForEvent[i] && listenersForEvent[i].call(this, options || {}); + } + this.__eventListeners[eventName] = listenersForEvent.filter(function (value) { + return value !== false; + }); + } + /** + * @namespace fabric.Observable + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#events} + * @see {@link http://fabricjs.com/events|Events demo} + */ + fabric.Observable = { + fire: fire, + on: on, + once: once, + off: off, + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + /** + * @namespace fabric.Collection + */ + fabric.Collection = { + /** + * @type {fabric.Object[]} + */ + _objects: [], + /** + * Adds objects to collection, Canvas or Group, then renders canvas + * (if `renderOnAddRemove` is not `false`). + * Objects should be instances of (or inherit from) fabric.Object + * @private + * @param {fabric.Object[]} objects to add + * @param {(object:fabric.Object) => any} [callback] + * @returns {number} new array length + */ + add: function (objects, callback) { + var size = this._objects.push.apply(this._objects, objects); + if (callback) { + for (var i = 0; i < objects.length; i++) { + callback.call(this, objects[i]); + } + } + return size; + }, + /** + * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`) + * An object should be an instance of (or inherit from) fabric.Object + * @private + * @param {fabric.Object|fabric.Object[]} objects Object(s) to insert + * @param {Number} index Index to insert object at + * @param {(object:fabric.Object) => any} [callback] + * @returns {number} new array length + */ + insertAt: function (objects, index, callback) { + var args = [index, 0].concat(objects); + this._objects.splice.apply(this._objects, args); + if (callback) { + for (var i = 2; i < args.length; i++) { + callback.call(this, args[i]); + } + } + return this._objects.length; + }, + /** + * Removes objects from a collection, then renders canvas (if `renderOnAddRemove` is not `false`) + * @private + * @param {fabric.Object[]} objectsToRemove objects to remove + * @param {(object:fabric.Object) => any} [callback] function to call for each object removed + * @returns {fabric.Object[]} removed objects + */ + remove: function (objectsToRemove, callback) { + var objects = this._objects, removed = []; + for (var i = 0, object, index; i < objectsToRemove.length; i++) { + object = objectsToRemove[i]; + index = objects.indexOf(object); + // only call onObjectRemoved if an object was actually removed + if (index !== -1) { + objects.splice(index, 1); + removed.push(object); + callback && callback.call(this, object); + } + } + return removed; + }, + /** + * Executes given function for each object in this group + * @param {Function} callback + * Callback invoked with current object as first argument, + * index - as second and an array of all objects - as third. + * Callback is invoked in a context of Global Object (e.g. `window`) + * when no `context` argument is given + * + * @param {Object} context Context (aka thisObject) + * @return {Self} thisArg + * @chainable + */ + forEachObject: function (callback, context) { + var objects = this.getObjects(); + for (var i = 0; i < objects.length; i++) { + callback.call(context, objects[i], i, objects); + } + return this; + }, + /** + * Returns an array of children objects of this instance + * @param {...String} [types] When specified, only objects of these types are returned + * @return {Array} + */ + getObjects: function () { + if (arguments.length === 0) { + return this._objects.concat(); + } + var types = Array.from(arguments); + return this._objects.filter(function (o) { + return types.indexOf(o.type) > -1; + }); + }, + /** + * Returns object at specified index + * @param {Number} index + * @return {Object} object at index + */ + item: function (index) { + return this._objects[index]; + }, + /** + * Returns true if collection contains no objects + * @return {Boolean} true if collection is empty + */ + isEmpty: function () { + return this._objects.length === 0; + }, + /** + * Returns a size of a collection (i.e: length of an array containing its objects) + * @return {Number} Collection size + */ + size: function () { + return this._objects.length; + }, + /** + * Returns true if collection contains an object.\ + * **Prefer using {@link `fabric.Object#isDescendantOf`} for performance reasons** + * instead of a.contains(b) use b.isDescendantOf(a) + * @param {Object} object Object to check against + * @param {Boolean} [deep=false] `true` to check all descendants, `false` to check only `_objects` + * @return {Boolean} `true` if collection contains an object + */ + contains: function (object, deep) { + if (this._objects.indexOf(object) > -1) { + return true; + } + else if (deep) { + return this._objects.some(function (obj) { + return (typeof obj.contains === 'function' && obj.contains(object, true)); + }); + } + return false; + }, + /** + * Returns number representation of a collection complexity + * @return {Number} complexity + */ + complexity: function () { + return this._objects.reduce(function (memo, current) { + memo += current.complexity ? current.complexity() : 0; + return memo; + }, 0); + }, + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + /** + * @namespace fabric.CommonMethods + */ + fabric.CommonMethods = { + /** + * Sets object's properties from options + * @param {Object} [options] Options object + */ + _setOptions: function (options) { + for (var prop in options) { + this.set(prop, options[prop]); + } + }, + /** + * @private + */ + _setObject: function (obj) { + for (var prop in obj) { + this._set(prop, obj[prop]); + } + }, + /** + * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`. + * @param {String|Object} key Property name or object (if object, iterate over the object properties) + * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one) + * @return {fabric.Object} thisArg + * @chainable + */ + set: function (key, value) { + if (typeof key === 'object') { + this._setObject(key); + } + else { + this._set(key, value); + } + return this; + }, + _set: function (key, value) { + this[key] = value; + }, + /** + * Toggles specified property from `true` to `false` or from `false` to `true` + * @param {String} property Property to toggle + * @return {fabric.Object} thisArg + * @chainable + */ + toggle: function (property) { + var value = this.get(property); + if (typeof value === 'boolean') { + this.set(property, !value); + } + return this; + }, + /** + * Basic getter + * @param {String} property Property name + * @return {*} value of a property + */ + get: function (property) { + return this[property]; + }, + }; +})(typeof exports !== 'undefined' ? exports : window); /** - * This object keeps the results of the boundsOfCurve calculation mapped by the joined arguments necessary to calculate it. - * It does speed up calculation, if you parse and add always the same paths, but in case of heavy usage of freedrawing - * you do not get any speed benefit and you get a big object in memory. - * The object was a private variable before, while now is appended to the lib so that you have access to it and you - * can eventually clear it. - * It was an internal variable, is accessible since version 2.3.4 + * Calculate the cos of an angle, avoiding returning floats for known results + * This function is here just to avoid getting 0.999999999999999 when dealing + * with numbers that are really 1 or 0. + * @static + * @memberOf fabric.util + * @param {TRadian} angle the angle + * @return {Number} the cosin value for angle. */ -fabric.boundsOfCurveCache = { }; +const cos = (angle) => { + if (angle === 0) { + return 1; + } + const angleSlice = Math.abs(angle) / halfPI; + switch (angleSlice) { + case 1: + case 3: + return 0; + case 2: + return -1; + } + return Math.cos(angle); +}; /** - * If disabled boundsOfCurveCache is not used. For apps that make heavy usage of pencil drawing probably disabling it is better - * @default true + * Calculate the cos of an angle, avoiding returning floats for known results + * This function is here just to avoid getting 0.999999999999999 when dealing + * with numbers that are really 1 or 0. + * @static + * @memberOf fabric.util + * @param {TRadian} angle the angle + * @return {Number} the sin value for angle. */ -fabric.cachesBoundsOfCurve = true; +const sin = (angle) => { + if (angle === 0) { + return 0; + } + const angleSlice = angle / halfPI; + const value = Math.sign(angle); + switch (angleSlice) { + case 1: + return value; + case 2: + return 0; + case 3: + return -value; + } + return Math.sin(angle); +}; /** - * Skip performance testing of setupGLContext and force the use of putImageData that seems to be the one that works best on - * Chrome + old hardware. if your users are experiencing empty images after filtering you may try to force this to true - * this has to be set before instantiating the filtering backend ( before filtering the first image ) - * @type Boolean - * @default false + * Adaptation of work of Kevin Lindsey(kevin@kevlindev.com) */ -fabric.forceGLPutImageData = false; - -fabric.initFilterBackend = function() { - if (fabric.enableGLFiltering && fabric.isWebglSupported && fabric.isWebglSupported(fabric.textureSize)) { - console.log('max texture size: ' + fabric.maxTextureSize); - return (new fabric.WebglFilterBackend({ tileSize: fabric.textureSize })); - } - else if (fabric.Canvas2dFilterBackend) { - return (new fabric.Canvas2dFilterBackend()); - } -}; - - -if (typeof document !== 'undefined' && typeof window !== 'undefined') { - // ensure globality even if entire library were function wrapped (as in Meteor.js packaging system) - window.fabric = fabric; -} - - -(function() { - - /** - * @private - * @param {String} eventName - * @param {Function} handler - */ - function _removeEventListener(eventName, handler) { - if (!this.__eventListeners[eventName]) { - return; - } - var eventListener = this.__eventListeners[eventName]; - if (handler) { - eventListener[eventListener.indexOf(handler)] = false; +class Point { + constructor(arg0 = 0, y = 0) { + this.type = 'point'; + if (typeof arg0 === 'object') { + this.x = arg0.x; + this.y = arg0.y; + } + else { + this.x = arg0; + this.y = y; + } } - else { - fabric.util.array.fill(eventListener, false); + /** + * Adds another point to this one and returns another one + * @param {Point} that + * @return {Point} new Point instance with added values + */ + add(that) { + return new Point(this.x + that.x, this.y + that.y); } - } - - /** - * Observes specified event - * @memberOf fabric.Observable - * @alias on - * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) - * @param {Function} handler Function that receives a notification when an event of the specified type occurs - * @return {Self} thisArg - * @chainable - */ - function on(eventName, handler) { - if (!this.__eventListeners) { - this.__eventListeners = { }; - } - // one object with key/value pairs was passed - if (arguments.length === 1) { - for (var prop in eventName) { - this.on(prop, eventName[prop]); - } + /** + * Adds another point to this one + * @param {Point} that + * @return {Point} thisArg + * @chainable + * @deprecated + */ + addEquals(that) { + this.x += that.x; + this.y += that.y; + return this; } - else { - if (!this.__eventListeners[eventName]) { - this.__eventListeners[eventName] = []; - } - this.__eventListeners[eventName].push(handler); + /** + * Adds value to this point and returns a new one + * @param {Number} scalar + * @return {Point} new Point with added value + */ + scalarAdd(scalar) { + return new Point(this.x + scalar, this.y + scalar); } - return this; - } - - function _once(eventName, handler) { - var _handler = function () { - handler.apply(this, arguments); - this.off(eventName, _handler); - }.bind(this); - this.on(eventName, _handler); - } - - function once(eventName, handler) { - // one object with key/value pairs was passed - if (arguments.length === 1) { - for (var prop in eventName) { - _once.call(this, prop, eventName[prop]); - } + /** + * Adds value to this point + * @param {Number} scalar + * @return {Point} thisArg + * @chainable + * @deprecated + */ + scalarAddEquals(scalar) { + this.x += scalar; + this.y += scalar; + return this; } - else { - _once.call(this, eventName, handler); + /** + * Subtracts another point from this point and returns a new one + * @param {Point} that + * @return {Point} new Point object with subtracted values + */ + subtract(that) { + return new Point(this.x - that.x, this.y - that.y); } - return this; - } - - /** - * Stops event observing for a particular event handler. Calling this method - * without arguments removes all handlers for all events - * @memberOf fabric.Observable - * @alias off - * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) - * @param {Function} handler Function to be deleted from EventListeners - * @return {Self} thisArg - * @chainable - */ - function off(eventName, handler) { - if (!this.__eventListeners) { - return this; + /** + * Subtracts another point from this point + * @param {Point} that + * @return {Point} thisArg + * @chainable + * @deprecated + */ + subtractEquals(that) { + this.x -= that.x; + this.y -= that.y; + return this; } - - // remove all key/value pairs (event name -> event handler) - if (arguments.length === 0) { - for (eventName in this.__eventListeners) { - _removeEventListener.call(this, eventName); - } - } - // one object with key/value pairs was passed - else if (arguments.length === 1 && typeof arguments[0] === 'object') { - for (var prop in eventName) { - _removeEventListener.call(this, prop, eventName[prop]); - } + /** + * Subtracts value from this point and returns a new one + * @param {Number} scalar + * @return {Point} + */ + scalarSubtract(scalar) { + return new Point(this.x - scalar, this.y - scalar); } - else { - _removeEventListener.call(this, eventName, handler); + /** + * Subtracts value from this point + * @param {Number} scalar + * @return {Point} thisArg + * @chainable + * @deprecated + */ + scalarSubtractEquals(scalar) { + this.x -= scalar; + this.y -= scalar; + return this; } - return this; - } - - /** - * Fires event with an optional options object - * @memberOf fabric.Observable - * @param {String} eventName Event name to fire - * @param {Object} [options] Options object - * @return {Self} thisArg - * @chainable - */ - function fire(eventName, options) { - if (!this.__eventListeners) { - return this; + /** + * Multiplies this point by another value and returns a new one + * @param {Point} that + * @return {Point} + */ + multiply(that) { + return new Point(this.x * that.x, this.y * that.y); } - - var listenersForEvent = this.__eventListeners[eventName]; - if (!listenersForEvent) { - return this; + /** + * Multiplies this point by a value and returns a new one + * @param {Number} scalar + * @return {Point} + */ + scalarMultiply(scalar) { + return new Point(this.x * scalar, this.y * scalar); } - - for (var i = 0, len = listenersForEvent.length; i < len; i++) { - listenersForEvent[i] && listenersForEvent[i].call(this, options || { }); + /** + * Multiplies this point by a value + * @param {Number} scalar + * @return {Point} thisArg + * @chainable + * @deprecated + */ + scalarMultiplyEquals(scalar) { + this.x *= scalar; + this.y *= scalar; + return this; } - this.__eventListeners[eventName] = listenersForEvent.filter(function(value) { - return value !== false; - }); - return this; - } - - /** - * @namespace fabric.Observable - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#events} - * @see {@link http://fabricjs.com/events|Events demo} - */ - fabric.Observable = { - fire: fire, - on: on, - once: once, - off: off, - }; -})(); - - -/** - * @namespace fabric.Collection - */ -fabric.Collection = { - - _objects: [], - - /** - * Adds objects to collection, Canvas or Group, then renders canvas - * (if `renderOnAddRemove` is not `false`). - * in case of Group no changes to bounding box are made. - * Objects should be instances of (or inherit from) fabric.Object - * Use of this function is highly discouraged for groups. - * you can add a bunch of objects with the add method but then you NEED - * to run a addWithUpdate call for the Group class or position/bbox will be wrong. - * @param {...fabric.Object} object Zero or more fabric instances - * @return {Self} thisArg - * @chainable - */ - add: function () { - this._objects.push.apply(this._objects, arguments); - if (this._onObjectAdded) { - for (var i = 0, length = arguments.length; i < length; i++) { - this._onObjectAdded(arguments[i]); - } - } - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - - /** - * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`) - * An object should be an instance of (or inherit from) fabric.Object - * Use of this function is highly discouraged for groups. - * you can add a bunch of objects with the insertAt method but then you NEED - * to run a addWithUpdate call for the Group class or position/bbox will be wrong. - * @param {Object} object Object to insert - * @param {Number} index Index to insert object at - * @param {Boolean} nonSplicing When `true`, no splicing (shifting) of objects occurs - * @return {Self} thisArg - * @chainable - */ - insertAt: function (object, index, nonSplicing) { - var objects = this._objects; - if (nonSplicing) { - objects[index] = object; + /** + * Divides this point by another and returns a new one + * @param {Point} that + * @return {Point} + */ + divide(that) { + return new Point(this.x / that.x, this.y / that.y); } - else { - objects.splice(index, 0, object); + /** + * Divides this point by a value and returns a new one + * @param {Number} scalar + * @return {Point} + */ + scalarDivide(scalar) { + return new Point(this.x / scalar, this.y / scalar); } - this._onObjectAdded && this._onObjectAdded(object); - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - - /** - * Removes objects from a collection, then renders canvas (if `renderOnAddRemove` is not `false`) - * @param {...fabric.Object} object Zero or more fabric instances - * @return {Self} thisArg - * @chainable - */ - remove: function() { - var objects = this._objects, - index, somethingRemoved = false; - - for (var i = 0, length = arguments.length; i < length; i++) { - index = objects.indexOf(arguments[i]); - - // only call onObjectRemoved if an object was actually removed - if (index !== -1) { - somethingRemoved = true; - objects.splice(index, 1); - this._onObjectRemoved && this._onObjectRemoved(arguments[i]); - } + /** + * Divides this point by a value + * @param {Number} scalar + * @return {Point} thisArg + * @chainable + * @deprecated + */ + scalarDivideEquals(scalar) { + this.x /= scalar; + this.y /= scalar; + return this; } - - this.renderOnAddRemove && somethingRemoved && this.requestRenderAll(); - return this; - }, - - /** - * Executes given function for each object in this group - * @param {Function} callback - * Callback invoked with current object as first argument, - * index - as second and an array of all objects - as third. - * Callback is invoked in a context of Global Object (e.g. `window`) - * when no `context` argument is given - * - * @param {Object} context Context (aka thisObject) - * @return {Self} thisArg - * @chainable - */ - forEachObject: function(callback, context) { - var objects = this.getObjects(); - for (var i = 0, len = objects.length; i < len; i++) { - callback.call(context, objects[i], i, objects); - } - return this; - }, - - /** - * Returns an array of children objects of this instance - * Type parameter introduced in 1.3.10 - * since 2.3.5 this method return always a COPY of the array; - * @param {String} [type] When specified, only objects of this type are returned - * @return {Array} - */ - getObjects: function(type) { - if (typeof type === 'undefined') { - return this._objects.concat(); - } - return this._objects.filter(function(o) { - return o.type === type; - }); - }, - - /** - * Returns object at specified index - * @param {Number} index - * @return {Self} thisArg - */ - item: function (index) { - return this._objects[index]; - }, - - /** - * Returns true if collection contains no objects - * @return {Boolean} true if collection is empty - */ - isEmpty: function () { - return this._objects.length === 0; - }, - - /** - * Returns a size of a collection (i.e: length of an array containing its objects) - * @return {Number} Collection size - */ - size: function() { - return this._objects.length; - }, - - /** - * Returns true if collection contains an object - * @param {Object} object Object to check against - * @param {Boolean} [deep=false] `true` to check all descendants, `false` to check only `_objects` - * @return {Boolean} `true` if collection contains an object - */ - contains: function (object, deep) { - if (this._objects.indexOf(object) > -1) { - return true; - } - else if (deep) { - return this._objects.some(function (obj) { - return typeof obj.contains === 'function' && obj.contains(object, true); - }); + /** + * Returns true if this point is equal to another one + * @param {Point} that + * @return {Boolean} + */ + eq(that) { + return this.x === that.x && this.y === that.y; } - return false; - }, - - /** - * Returns number representation of a collection complexity - * @return {Number} complexity - */ - complexity: function () { - return this._objects.reduce(function (memo, current) { - memo += current.complexity ? current.complexity() : 0; - return memo; - }, 0); - } -}; - - -/** - * @namespace fabric.CommonMethods - */ -fabric.CommonMethods = { - - /** - * Sets object's properties from options - * @param {Object} [options] Options object - */ - _setOptions: function(options) { - for (var prop in options) { - this.set(prop, options[prop]); - } - }, - - /** - * @private - * @param {Object} [filler] Options object - * @param {String} [property] property to set the Gradient to - */ - _initGradient: function(filler, property) { - if (filler && filler.colorStops && !(filler instanceof fabric.Gradient)) { - this.set(property, new fabric.Gradient(filler)); - } - }, - - /** - * @private - * @param {Object} [filler] Options object - * @param {String} [property] property to set the Pattern to - * @param {Function} [callback] callback to invoke after pattern load - */ - _initPattern: function(filler, property, callback) { - if (filler && filler.source && !(filler instanceof fabric.Pattern)) { - this.set(property, new fabric.Pattern(filler, callback)); + /** + * Returns true if this point is less than another one + * @param {Point} that + * @return {Boolean} + */ + lt(that) { + return this.x < that.x && this.y < that.y; } - else { - callback && callback(); + /** + * Returns true if this point is less than or equal to another one + * @param {Point} that + * @return {Boolean} + */ + lte(that) { + return this.x <= that.x && this.y <= that.y; } - }, - - /** - * @private - */ - _setObject: function(obj) { - for (var prop in obj) { - this._set(prop, obj[prop]); - } - }, - - /** - * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`. - * @param {String|Object} key Property name or object (if object, iterate over the object properties) - * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one) - * @return {fabric.Object} thisArg - * @chainable - */ - set: function(key, value) { - if (typeof key === 'object') { - this._setObject(key); + /** + + * Returns true if this point is greater another one + * @param {Point} that + * @return {Boolean} + */ + gt(that) { + return this.x > that.x && this.y > that.y; } - else { - this._set(key, value); + /** + * Returns true if this point is greater than or equal to another one + * @param {Point} that + * @return {Boolean} + */ + gte(that) { + return this.x >= that.x && this.y >= that.y; } - return this; - }, - - _set: function(key, value) { - this[key] = value; - }, - - /** - * Toggles specified property from `true` to `false` or from `false` to `true` - * @param {String} property Property to toggle - * @return {fabric.Object} thisArg - * @chainable - */ - toggle: function(property) { - var value = this.get(property); - if (typeof value === 'boolean') { - this.set(property, !value); - } - return this; - }, - - /** - * Basic getter - * @param {String} property Property name - * @return {*} value of a property - */ - get: function(property) { - return this[property]; - } -}; - - -(function(global) { - - var sqrt = Math.sqrt, - atan2 = Math.atan2, - pow = Math.pow, - PiBy180 = Math.PI / 180, - PiBy2 = Math.PI / 2; - - /** - * @namespace fabric.util - */ - fabric.util = { - /** - * Calculate the cos of an angle, avoiding returning floats for known results - * @static - * @memberOf fabric.util - * @param {Number} angle the angle in radians or in degree - * @return {Number} + * Returns new point which is the result of linear interpolation with this one and another one + * @param {Point} that + * @param {Number} t , position of interpolation, between 0 and 1 default 0.5 + * @return {Point} */ - cos: function(angle) { - if (angle === 0) { return 1; } - if (angle < 0) { - // cos(a) = cos(-a) - angle = -angle; - } - var angleSlice = angle / PiBy2; - switch (angleSlice) { - case 1: case 3: return 0; - case 2: return -1; - } - return Math.cos(angle); - }, - + lerp(that, t = 0.5) { + t = Math.max(Math.min(1, t), 0); + return new Point(this.x + (that.x - this.x) * t, this.y + (that.y - this.y) * t); + } /** - * Calculate the sin of an angle, avoiding returning floats for known results - * @static - * @memberOf fabric.util - * @param {Number} angle the angle in radians or in degree + * Returns distance from this point and another one + * @param {Point} that * @return {Number} */ - sin: function(angle) { - if (angle === 0) { return 0; } - var angleSlice = angle / PiBy2, sign = 1; - if (angle < 0) { - // sin(-a) = -sin(a) - sign = -1; - } - switch (angleSlice) { - case 1: return sign; - case 2: return 0; - case 3: return -sign; - } - return Math.sin(angle); - }, - + distanceFrom(that) { + const dx = this.x - that.x, dy = this.y - that.y; + return Math.sqrt(dx * dx + dy * dy); + } /** - * Removes value from an array. - * Presence of value (and its position in an array) is determined via `Array.prototype.indexOf` - * @static - * @memberOf fabric.util - * @param {Array} array - * @param {*} value - * @return {Array} original array + * Returns the point between this point and another one + * @param {Point} that + * @return {Point} */ - removeFromArray: function(array, value) { - var idx = array.indexOf(value); - if (idx !== -1) { - array.splice(idx, 1); - } - return array; - }, - + midPointFrom(that) { + return this.lerp(that); + } /** - * Returns random number between 2 specified ones. - * @static - * @memberOf fabric.util - * @param {Number} min lower limit - * @param {Number} max upper limit - * @return {Number} random value (between min and max) + * Returns a new point which is the min of this and another one + * @param {Point} that + * @return {Point} */ - getRandomInt: function(min, max) { - return Math.floor(Math.random() * (max - min + 1)) + min; - }, - + min(that) { + return new Point(Math.min(this.x, that.x), Math.min(this.y, that.y)); + } /** - * Transforms degrees to radians. - * @static - * @memberOf fabric.util - * @param {Number} degrees value in degrees - * @return {Number} value in radians + * Returns a new point which is the max of this and another one + * @param {Point} that + * @return {Point} */ - degreesToRadians: function(degrees) { - return degrees * PiBy180; - }, - + max(that) { + return new Point(Math.max(this.x, that.x), Math.max(this.y, that.y)); + } /** - * Transforms radians to degrees. - * @static - * @memberOf fabric.util - * @param {Number} radians value in radians - * @return {Number} value in degrees + * Returns string representation of this point + * @return {String} */ - radiansToDegrees: function(radians) { - return radians / PiBy180; - }, - + toString() { + return this.x + ',' + this.y; + } /** - * Rotates `point` around `origin` with `radians` - * @static - * @memberOf fabric.util - * @param {fabric.Point} point The point to rotate - * @param {fabric.Point} origin The origin of the rotation - * @param {Number} radians The radians of the angle for the rotation - * @return {fabric.Point} The new rotated point - */ - rotatePoint: function(point, origin, radians) { - var newPoint = new fabric.Point(point.x - origin.x, point.y - origin.y), - v = fabric.util.rotateVector(newPoint, radians); - return new fabric.Point(v.x, v.y).addEquals(origin); - }, - + * Sets x/y of this point + * @param {Number} x + * @param {Number} y + * @chainable + */ + setXY(x, y) { + this.x = x; + this.y = y; + return this; + } /** - * Rotates `vector` with `radians` - * @static - * @memberOf fabric.util - * @param {Object} vector The vector to rotate (x and y) - * @param {Number} radians The radians of the angle for the rotation - * @return {Object} The new rotated point - */ - rotateVector: function(vector, radians) { - var sin = fabric.util.sin(radians), - cos = fabric.util.cos(radians), - rx = vector.x * cos - vector.y * sin, - ry = vector.x * sin + vector.y * cos; - return { - x: rx, - y: ry - }; - }, - + * Sets x of this point + * @param {Number} x + * @chainable + */ + setX(x) { + this.x = x; + return this; + } /** - * Creates a vetor from points represented as a point - * @static - * @memberOf fabric.util - * - * @typedef {Object} Point - * @property {number} x - * @property {number} y - * - * @param {Point} from - * @param {Point} to - * @returns {Point} vector + * Sets y of this point + * @param {Number} y + * @chainable */ - createVector: function (from, to) { - return new fabric.Point(to.x - from.x, to.y - from.y); - }, - + setY(y) { + this.y = y; + return this; + } /** - * Calculates angle between 2 vectors using dot product - * @static - * @memberOf fabric.util - * @param {Point} a - * @param {Point} b - * @returns the angle in radian between the vectors + * Sets x/y of this point from another point + * @param {Point} that + * @chainable */ - calcAngleBetweenVectors: function (a, b) { - return Math.acos((a.x * b.x + a.y * b.y) / (Math.hypot(a.x, a.y) * Math.hypot(b.x, b.y))); - }, - + setFromPoint(that) { + this.x = that.x; + this.y = that.y; + return this; + } /** - * @static - * @memberOf fabric.util - * @param {Point} v - * @returns {Point} vector representing the unit vector of pointing to the direction of `v` + * Swaps x/y of this point and another point + * @param {Point} that */ - getHatVector: function (v) { - return new fabric.Point(v.x, v.y).multiply(1 / Math.hypot(v.x, v.y)); - }, - + swap(that) { + const x = this.x, y = this.y; + this.x = that.x; + this.y = that.y; + that.x = x; + that.y = y; + } /** - * @static - * @memberOf fabric.util - * @param {Point} A - * @param {Point} B - * @param {Point} C - * @returns {{ vector: Point, angle: number }} vector representing the bisector of A and A's angle - */ - getBisector: function (A, B, C) { - var AB = fabric.util.createVector(A, B), AC = fabric.util.createVector(A, C); - var alpha = fabric.util.calcAngleBetweenVectors(AB, AC); - // check if alpha is relative to AB->BC - var ro = fabric.util.calcAngleBetweenVectors(fabric.util.rotateVector(AB, alpha), AC); - var phi = alpha * (ro === 0 ? 1 : -1) / 2; - return { - vector: fabric.util.getHatVector(fabric.util.rotateVector(AB, phi)), - angle: alpha - }; - }, - + * return a cloned instance of the point + * @return {Point} + */ + clone() { + return new Point(this.x, this.y); + } /** - * Project stroke width on points returning 2 projections for each point as follows: - * - `miter`: 2 points corresponding to the outer boundary and the inner boundary of stroke. - * - `bevel`: 2 points corresponding to the bevel boundaries, tangent to the bisector. - * - `round`: same as `bevel` - * Used to calculate object's bounding box + * Rotates `point` around `origin` with `radians` * @static * @memberOf fabric.util - * @param {Point[]} points - * @param {Object} options - * @param {number} options.strokeWidth - * @param {'miter'|'bevel'|'round'} options.strokeLineJoin - * @param {number} options.strokeMiterLimit https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit - * @param {boolean} options.strokeUniform - * @param {number} options.scaleX - * @param {number} options.scaleY - * @param {boolean} [openPath] whether the shape is open or not, affects the calculations of the first and last points - * @returns {fabric.Point[]} array of size 2n/4n of all suspected points - */ - projectStrokeOnPoints: function (points, options, openPath) { - var coords = [], s = options.strokeWidth / 2, - strokeUniformScalar = options.strokeUniform ? - new fabric.Point(1 / options.scaleX, 1 / options.scaleY) : new fabric.Point(1, 1), - getStrokeHatVector = function (v) { - var scalar = s / (Math.hypot(v.x, v.y)); - return new fabric.Point(v.x * scalar * strokeUniformScalar.x, v.y * scalar * strokeUniformScalar.y); - }; - if (points.length <= 1) {return coords;} - points.forEach(function (p, index) { - var A = new fabric.Point(p.x, p.y), B, C; - if (index === 0) { - C = points[index + 1]; - B = openPath ? getStrokeHatVector(fabric.util.createVector(C, A)).addEquals(A) : points[points.length - 1]; - } - else if (index === points.length - 1) { - B = points[index - 1]; - C = openPath ? getStrokeHatVector(fabric.util.createVector(B, A)).addEquals(A) : points[0]; - } - else { - B = points[index - 1]; - C = points[index + 1]; - } - var bisector = fabric.util.getBisector(A, B, C), - bisectorVector = bisector.vector, - alpha = bisector.angle, - scalar, - miterVector; - if (options.strokeLineJoin === 'miter') { - scalar = -s / Math.sin(alpha / 2); - miterVector = new fabric.Point( - bisectorVector.x * scalar * strokeUniformScalar.x, - bisectorVector.y * scalar * strokeUniformScalar.y - ); - if (Math.hypot(miterVector.x, miterVector.y) / s <= options.strokeMiterLimit) { - coords.push(A.add(miterVector)); - coords.push(A.subtract(miterVector)); - return; - } - } - scalar = -s * Math.SQRT2; - miterVector = new fabric.Point( - bisectorVector.x * scalar * strokeUniformScalar.x, - bisectorVector.y * scalar * strokeUniformScalar.y - ); - coords.push(A.add(miterVector)); - coords.push(A.subtract(miterVector)); - }); - return coords; - }, - + * @param {Point} origin The origin of the rotation + * @param {TRadian} radians The radians of the angle for the rotation + * @return {Point} The new rotated point + */ + rotate(radians, origin = originZero) { + // TODO benchmark and verify the add and subtract how much cost + // and then in case early return if no origin is passed + const sinus = sin(radians), cosinus = cos(radians); + const p = this.subtract(origin); + const rotated = new Point(p.x * cosinus - p.y * sinus, p.x * sinus + p.y * cosinus); + return rotated.add(origin); + } /** * Apply transform t to point p * @static * @memberOf fabric.util - * @param {fabric.Point} p The point to transform - * @param {Array} t The transform + * @param {TMat2D} t The transform * @param {Boolean} [ignoreOffset] Indicates that the offset should not be applied - * @return {fabric.Point} The transformed point - */ - transformPoint: function(p, t, ignoreOffset) { - if (ignoreOffset) { - return new fabric.Point( - t[0] * p.x + t[2] * p.y, - t[1] * p.x + t[3] * p.y - ); - } - return new fabric.Point( - t[0] * p.x + t[2] * p.y + t[4], - t[1] * p.x + t[3] * p.y + t[5] - ); - }, - - /** - * Returns coordinates of points's bounding rectangle (left, top, width, height) - * @param {Array} points 4 points array - * @param {Array} [transform] an array of 6 numbers representing a 2x3 transform matrix - * @return {Object} Object with left, top, width, height properties - */ - makeBoundingBoxFromPoints: function(points, transform) { - if (transform) { - for (var i = 0; i < points.length; i++) { - points[i] = fabric.util.transformPoint(points[i], transform); - } - } - var xPoints = [points[0].x, points[1].x, points[2].x, points[3].x], - minX = fabric.util.array.min(xPoints), - maxX = fabric.util.array.max(xPoints), - width = maxX - minX, - yPoints = [points[0].y, points[1].y, points[2].y, points[3].y], - minY = fabric.util.array.min(yPoints), - maxY = fabric.util.array.max(yPoints), - height = maxY - minY; - - return { - left: minX, - top: minY, - width: width, - height: height - }; - }, - - /** - * Invert transformation t - * @static - * @memberOf fabric.util - * @param {Array} t The transform - * @return {Array} The inverted transform - */ - invertTransform: function(t) { - var a = 1 / (t[0] * t[3] - t[1] * t[2]), - r = [a * t[3], -a * t[1], -a * t[2], a * t[0]], - o = fabric.util.transformPoint({ x: t[4], y: t[5] }, r, true); - r[4] = -o.x; - r[5] = -o.y; - return r; - }, - - /** - * A wrapper around Number#toFixed, which contrary to native method returns number, not string. - * @static - * @memberOf fabric.util - * @param {Number|String} number number to operate on - * @param {Number} fractionDigits number of fraction digits to "leave" - * @return {Number} + * @return {Point} The transformed point */ - toFixed: function(number, fractionDigits) { - return parseFloat(Number(number).toFixed(fractionDigits)); - }, - - /** - * Converts from attribute value to pixel value if applicable. - * Returns converted pixels or original value not converted. - * @param {Number|String} value number to operate on - * @param {Number} fontSize - * @return {Number|String} - */ - parseUnit: function(value, fontSize) { - var unit = /\D{0,2}$/.exec(value), - number = parseFloat(value); - if (!fontSize) { - fontSize = fabric.Text.DEFAULT_SVG_FONT_SIZE; - } - switch (unit[0]) { - case 'mm': - return number * fabric.DPI / 25.4; + transform(t, ignoreOffset = false) { + return new Point(t[0] * this.x + t[2] * this.y + (ignoreOffset ? 0 : t[4]), t[1] * this.x + t[3] * this.y + (ignoreOffset ? 0 : t[5])); + } +} +const originZero = new Point(0, 0); +fabric$1.Point = Point; - case 'cm': - return number * fabric.DPI / 2.54; +/** + * Rotates `vector` with `radians` + * @static + * @memberOf fabric.util + * @param {Point} vector The vector to rotate (x and y) + * @param {Number} radians The radians of the angle for the rotation + * @return {Point} The new rotated point + */ +const rotateVector = (vector, radians) => vector.rotate(radians); +/** + * Creates a vetor from points represented as a point + * @static + * @memberOf fabric.util + * + * @param {Point} from + * @param {Point} to + * @returns {Point} vector + */ +const createVector = (from, to) => new Point(to).subtract(from); +/** + * Calculates angle between 2 vectors using dot product + * @static + * @memberOf fabric.util + * @param {Point} a + * @param {Point} b + * @returns the angle in radian between the vectors + */ +const calcAngleBetweenVectors = (a, b) => Math.acos((a.x * b.x + a.y * b.y) / (Math.hypot(a.x, a.y) * Math.hypot(b.x, b.y))); +/** + * @static + * @memberOf fabric.util + * @param {Point} v + * @returns {Point} vector representing the unit vector of pointing to the direction of `v` + */ +const getHatVector = (v) => v.scalarMultiply(1 / Math.hypot(v.x, v.y)); +/** + * @static + * @memberOf fabric.util + * @param {Point} A + * @param {Point} B + * @param {Point} C + * @returns {{ vector: Point, angle: number }} vector representing the bisector of A and A's angle + */ +const getBisector = (a, b, c) => { + const ab = createVector(a, b), ac = createVector(a, c); + const alpha = calcAngleBetweenVectors(ab, ac); + // check if alpha is relative to AB->BC + const ro = calcAngleBetweenVectors(rotateVector(ab, alpha), ac); + const phi = ((alpha * (ro === 0 ? 1 : -1)) / 2); + return { + vector: getHatVector(rotateVector(ab, phi)), + angle: alpha, + }; +}; - case 'in': - return number * fabric.DPI; +/** + * Transforms degrees to radians. + * @static + * @memberOf fabric.util + * @param {TDegree} degrees value in degrees + * @return {TRadian} value in radians + */ +const degreesToRadians$1 = (degrees) => (degrees * PiBy180); +/** + * Transforms radians to degrees. + * @static + * @memberOf fabric.util + * @param {TRadian} radians value in radians + * @return {TDegree} value in degrees + */ +const radiansToDegrees = (radians) => (radians / PiBy180); - case 'pt': - return number * fabric.DPI / 72; // or * 4 / 3 +/** + * Rotates `point` around `origin` with `radians` + * @static + * @deprecated use the Point.rotate + * @memberOf fabric.util + * @param {Point} origin The origin of the rotation + * @param {Point} origin The origin of the rotation + * @param {TRadian} radians The radians of the angle for the rotation + * @return {Point} The new rotated point + */ +const rotatePoint = (point, origin, radians) => point.rotate(radians, origin); - case 'pc': - return number * fabric.DPI / 72 * 12; // or * 16 +/** + * Returns random number between 2 specified ones. + * @static + * @memberOf fabric.util + * @param {Number} min lower limit + * @param {Number} max upper limit + * @return {Number} random value (between min and max) + */ +const getRandomInt = (min, max) => Math.floor(Math.random() * (max - min + 1)) + min; - case 'em': - return number * fontSize; +/** + * + * @param value value to check if NaN + * @param [valueIfNaN] + * @returns `fallback` is `value is NaN + */ +const ifNaN = (value, valueIfNaN) => { + return isNaN(value) && typeof valueIfNaN === 'number' ? valueIfNaN : value; +}; - default: - return number; - } - }, +/** + * Removes value from an array. + * Presence of value (and its position in an array) is determined via `Array.prototype.indexOf` + * @static + * @memberOf fabric.util + * @param {Array} array + * @param {*} value + * @return {Array} original array + */ +const removeFromArray = (array, value) => { + const idx = array.indexOf(value); + if (idx !== -1) { + array.splice(idx, 1); + } + return array; +}; - /** - * Function which always returns `false`. - * @static - * @memberOf fabric.util - * @return {Boolean} - */ - falseFunction: function() { - return false; - }, +const projectStrokeOnPoints = (points, { strokeWidth, strokeLineJoin, strokeMiterLimit, // https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit +strokeUniform, scaleX, scaleY, }, openPath) => { + const coords = [], s = strokeWidth / 2, strokeUniformScalar = strokeUniform + ? new Point(1 / scaleX, 1 / scaleY) + : new Point(1, 1), getStrokeHatVector = (v) => { + const scalar = s / Math.hypot(v.x, v.y); + return new Point(v.x * scalar * strokeUniformScalar.x, v.y * scalar * strokeUniformScalar.y); + }; + if (points.length <= 1) { + return coords; + } + points.forEach(function (p, index) { + const A = new Point(p.x, p.y); + let B, C; + if (index === 0) { + C = points[index + 1]; + B = openPath + ? getStrokeHatVector(createVector(C, A)).add(A) + : points[points.length - 1]; + } + else if (index === points.length - 1) { + B = points[index - 1]; + C = openPath ? getStrokeHatVector(createVector(B, A)).add(A) : points[0]; + } + else { + B = points[index - 1]; + C = points[index + 1]; + } + const bisector = getBisector(A, B, C), bisectorVector = bisector.vector, alpha = bisector.angle; + let scalar, miterVector; + if (strokeLineJoin === "miter" /* StrokeLineJoin.miter */) { + scalar = -s / Math.sin(alpha / 2); + miterVector = new Point(bisectorVector.x * scalar * strokeUniformScalar.x, bisectorVector.y * scalar * strokeUniformScalar.y); + if (Math.hypot(miterVector.x, miterVector.y) / s <= strokeMiterLimit) { + coords.push(A.add(miterVector)); + coords.push(A.subtract(miterVector)); + return; + } + } + scalar = -s * Math.SQRT2; + miterVector = new Point(bisectorVector.x * scalar * strokeUniformScalar.x, bisectorVector.y * scalar * strokeUniformScalar.y); + coords.push(A.add(miterVector)); + coords.push(A.subtract(miterVector)); + }); + return coords; +}; - /** - * Returns klass "Class" object of given namespace - * @memberOf fabric.util - * @param {String} type Type of object (eg. 'circle') - * @param {String} namespace Namespace to get klass "Class" object from - * @return {Object} klass "Class" - */ - getKlass: function(type, namespace) { - // capitalize first letter only - type = fabric.util.string.camelize(type.charAt(0).toUpperCase() + type.slice(1)); - return fabric.util.resolveNamespace(namespace)[type]; - }, +/*! ***************************************************************************** +Copyright (c) Microsoft Corporation. + +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH +REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY +AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, +INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM +LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +PERFORMANCE OF THIS SOFTWARE. +***************************************************************************** */ +function __rest(s, e) { + var t = {}; + for (var p in s) + if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) + t[p] = s[p]; + if (s != null && typeof Object.getOwnPropertySymbols === "function") + for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) { + if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) + t[p[i]] = s[p[i]]; + } + return t; +} - /** - * Returns array of attributes for given svg that fabric parses - * @memberOf fabric.util - * @param {String} type Type of svg element (eg. 'circle') - * @return {Array} string names of supported attributes - */ - getSvgAttributes: function(type) { - var attributes = [ - 'instantiated_by_use', - 'style', - 'id', - 'class' - ]; - switch (type) { - case 'linearGradient': - attributes = attributes.concat(['x1', 'y1', 'x2', 'y2', 'gradientUnits', 'gradientTransform']); - break; - case 'radialGradient': - attributes = attributes.concat(['gradientUnits', 'gradientTransform', 'cx', 'cy', 'r', 'fx', 'fy', 'fr']); - break; - case 'stop': - attributes = attributes.concat(['offset', 'stop-color', 'stop-opacity']); - break; - } - return attributes; - }, - - /** - * Returns object of given namespace - * @memberOf fabric.util - * @param {String} namespace Namespace string e.g. 'fabric.Image.filter' or 'fabric' - * @return {Object} Object for given namespace (default fabric) - */ - resolveNamespace: function(namespace) { - if (!namespace) { - return fabric; - } - - var parts = namespace.split('.'), - len = parts.length, i, - obj = global || fabric.window; - - for (i = 0; i < len; ++i) { - obj = obj[parts[i]]; - } - - return obj; - }, +/** + * Apply transform t to point p + * @static + * @memberOf fabric.util + * @param {Point | IPoint} p The point to transform + * @param {Array} t The transform + * @param {Boolean} [ignoreOffset] Indicates that the offset should not be applied + * @return {Point} The transformed point + */ +const transformPoint = (p, t, ignoreOffset) => new Point(p).transform(t, ignoreOffset); +/** + * Invert transformation t + * @static + * @memberOf fabric.util + * @param {Array} t The transform + * @return {Array} The inverted transform + */ +const invertTransform = (t) => { + const a = 1 / (t[0] * t[3] - t[1] * t[2]), r = [a * t[3], -a * t[1], -a * t[2], a * t[0], 0, 0], { x, y } = transformPoint(new Point(t[4], t[5]), r, true); + r[4] = -x; + r[5] = -y; + return r; +}; +/** + * Multiply matrix A by matrix B to nest transformations + * @static + * @memberOf fabric.util + * @param {TMat2D} a First transformMatrix + * @param {TMat2D} b Second transformMatrix + * @param {Boolean} is2x2 flag to multiply matrices as 2x2 matrices + * @return {TMat2D} The product of the two transform matrices + */ +const multiplyTransformMatrices = (a, b, is2x2) => [ + a[0] * b[0] + a[2] * b[1], + a[1] * b[0] + a[3] * b[1], + a[0] * b[2] + a[2] * b[3], + a[1] * b[2] + a[3] * b[3], + is2x2 ? 0 : a[0] * b[4] + a[2] * b[5] + a[4], + is2x2 ? 0 : a[1] * b[4] + a[3] * b[5] + a[5], +]; +/** + * Decomposes standard 2x3 matrix into transform components + * @static + * @memberOf fabric.util + * @param {TMat2D} a transformMatrix + * @return {Object} Components of transform + */ +const qrDecompose = (a) => { + const angle = Math.atan2(a[1], a[0]), denom = Math.pow(a[0], 2) + Math.pow(a[1], 2), scaleX = Math.sqrt(denom), scaleY = (a[0] * a[3] - a[2] * a[1]) / scaleX, skewX = Math.atan2(a[0] * a[2] + a[1] * a[3], denom); + return { + angle: (angle / PiBy180), + scaleX, + scaleY, + skewX: (skewX / PiBy180), + skewY: 0, + translateX: a[4], + translateY: a[5], + }; +}; +/** + * Returns a transform matrix starting from an object of the same kind of + * the one returned from qrDecompose, useful also if you want to calculate some + * transformations from an object that is not enlived yet + * @static + * @memberOf fabric.util + * @param {Object} options + * @param {Number} [options.angle] angle in degrees + * @return {TMat2D} transform matrix + */ +const calcRotateMatrix = ({ angle }) => { + if (!angle) { + return iMatrix; + } + const theta = degreesToRadians$1(angle), cosin = cos(theta), sinus = sin(theta); + return [cosin, sinus, -sinus, cosin, 0, 0]; +}; +/** + * Returns a transform matrix starting from an object of the same kind of + * the one returned from qrDecompose, useful also if you want to calculate some + * transformations from an object that is not enlived yet. + * is called DimensionsTransformMatrix because those properties are the one that influence + * the size of the resulting box of the object. + * @static + * @memberOf fabric.util + * @param {Object} options + * @param {Number} [options.scaleX] + * @param {Number} [options.scaleY] + * @param {Boolean} [options.flipX] + * @param {Boolean} [options.flipY] + * @param {Number} [options.skewX] + * @param {Number} [options.skewY] + * @return {Number[]} transform matrix + */ +const calcDimensionsMatrix = ({ scaleX = 1, scaleY = 1, flipX = false, flipY = false, skewX = 0, skewY = 0, }) => { + let scaleMatrix = iMatrix; + if (scaleX !== 1 || scaleY !== 1 || flipX || flipY) { + scaleMatrix = [ + flipX ? -scaleX : scaleX, + 0, + 0, + flipY ? -scaleY : scaleY, + 0, + 0, + ]; + } + if (skewX) { + scaleMatrix = multiplyTransformMatrices(scaleMatrix, [1, 0, Math.tan(degreesToRadians$1(skewX)), 1], true); + } + if (skewY) { + scaleMatrix = multiplyTransformMatrices(scaleMatrix, [1, Math.tan(degreesToRadians$1(skewY)), 0, 1], true); + } + return scaleMatrix; +}; +/** + * Returns a transform matrix starting from an object of the same kind of + * the one returned from qrDecompose, useful also if you want to calculate some + * transformations from an object that is not enlived yet + * @static + * @memberOf fabric.util + * @param {Object} options + * @param {Number} [options.angle] + * @param {Number} [options.scaleX] + * @param {Number} [options.scaleY] + * @param {Boolean} [options.flipX] + * @param {Boolean} [options.flipY] + * @param {Number} [options.skewX] + * @param {Number} [options.skewY] + * @param {Number} [options.translateX] + * @param {Number} [options.translateY] + * @return {Number[]} transform matrix + */ +const composeMatrix = (_a) => { + var { translateX = 0, translateY = 0, angle = 0 } = _a, otherOptions = __rest(_a, ["translateX", "translateY", "angle"]); + let matrix = [1, 0, 0, 1, translateX, translateY]; + if (angle) { + matrix = multiplyTransformMatrices(matrix, calcRotateMatrix({ angle })); + } + const scaleMatrix = calcDimensionsMatrix(otherOptions); + if (scaleMatrix !== iMatrix) { + matrix = multiplyTransformMatrices(matrix, scaleMatrix); + } + return matrix; +}; - /** - * Loads image element from given url and passes it to a callback - * @memberOf fabric.util - * @param {String} url URL representing an image - * @param {Function} callback Callback; invoked with loaded image - * @param {*} [context] Context to invoke callback in - * @param {Object} [crossOrigin] crossOrigin value to set image element to - */ - loadImage: function(url, callback, context, crossOrigin) { - if (!url) { - callback && callback.call(context, url); - return; - } +//@ts-nocheck +/** + * Copies all enumerable properties of one js object to another + * this does not and cannot compete with generic utils. + * Does not clone or extend fabric.Object subclasses. + * This is mostly for internal use and has extra handling for fabricJS objects + * it skips the canvas and group properties in deep cloning. + * @memberOf fabric.util.object + * @param {Object} destination Where to copy to + * @param {Object} source Where to copy from + * @param {Boolean} [deep] Whether to extend nested objects + * @return {Object} + */ +const extend = (destination, source, deep) => { + // the deep clone is for internal use, is not meant to avoid + // javascript traps or cloning html element or self referenced objects. + if (deep) { + if (!fabric$1.isLikelyNode && source instanceof Element) { + // avoid cloning deep images, canvases, + destination = source; + } + else if (Array.isArray(source)) { + destination = []; + for (let i = 0, len = source.length; i < len; i++) { + destination[i] = extend({}, source[i], deep); + } + } + else if (source && typeof source === 'object') { + for (const property in source) { + if (property === 'canvas' || property === 'group') { + // we do not want to clone this props at all. + // we want to keep the keys in the copy + destination[property] = null; + } + else if (Object.prototype.hasOwnProperty.call(source, property)) { + destination[property] = extend({}, source[property], deep); + } + } + } + else { + // this sounds odd for an extend but is ok for recursive use + destination = source; + } + } + else { + for (const property in source) { + destination[property] = source[property]; + } + } + return destination; +}; +/** + * Creates an empty object and copies all enumerable properties of another object to it + * This method is mostly for internal use, and not intended for duplicating shapes in canvas. + * @memberOf fabric.util.object + * @param {Object} object Object to clone + * @param {Boolean} [deep] Whether to clone nested objects + * @return {Object} + */ +//TODO: this function return an empty object if you try to clone null +const clone = (object, deep) => deep ? extend({}, object, deep) : Object.assign({}, object); - var img = fabric.util.createImage(); +/** + * @memberOf fabric.util + * @param {Object} prevStyle first style to compare + * @param {Object} thisStyle second style to compare + * @param {boolean} forTextSpans whether to check overline, underline, and line-through properties + * @return {boolean} true if the style changed + */ +const hasStyleChanged = (prevStyle, thisStyle, forTextSpans = false) => prevStyle.fill !== thisStyle.fill || + prevStyle.stroke !== thisStyle.stroke || + prevStyle.strokeWidth !== thisStyle.strokeWidth || + prevStyle.fontSize !== thisStyle.fontSize || + prevStyle.fontFamily !== thisStyle.fontFamily || + prevStyle.fontWeight !== thisStyle.fontWeight || + prevStyle.fontStyle !== thisStyle.fontStyle || + prevStyle.textBackgroundColor !== thisStyle.textBackgroundColor || + prevStyle.deltaY !== thisStyle.deltaY || + (forTextSpans && + (prevStyle.overline !== thisStyle.overline || + prevStyle.underline !== thisStyle.underline || + prevStyle.linethrough !== thisStyle.linethrough)); +/** + * Returns the array form of a text object's inline styles property with styles grouped in ranges + * rather than per character. This format is less verbose, and is better suited for storage + * so it is used in serialization (not during runtime). + * @memberOf fabric.util + * @param {object} styles per character styles for a text object + * @param {String} text the text string that the styles are applied to + * @return {{start: number, end: number, style: object}[]} + */ +const stylesToArray = (styles, text) => { + const textLines = text.split('\n'), stylesArray = []; + let charIndex = -1, prevStyle = {}; + // clone style structure to prevent mutation + styles = clone(styles, true); + //loop through each textLine + for (let i = 0; i < textLines.length; i++) { + if (!styles[i]) { + //no styles exist for this line, so add the line's length to the charIndex total + charIndex += textLines[i].length; + continue; + } + //loop through each character of the current line + for (let c = 0; c < textLines[i].length; c++) { + charIndex++; + const thisStyle = styles[i][c]; + //check if style exists for this character + if (thisStyle && Object.keys(thisStyle).length > 0) { + if (hasStyleChanged(prevStyle, thisStyle, true)) { + stylesArray.push({ + start: charIndex, + end: charIndex + 1, + style: thisStyle, + }); + } + else { + //if style is the same as previous character, increase end index + stylesArray[stylesArray.length - 1].end++; + } + } + prevStyle = thisStyle || {}; + } + } + return stylesArray; +}; +/** + * Returns the object form of the styles property with styles that are assigned per + * character rather than grouped by range. This format is more verbose, and is + * only used during runtime (not for serialization/storage) + * @memberOf fabric.util + * @param {Array} styles the serialized form of a text object's styles + * @param {String} text the text string that the styles are applied to + * @return {Object} + */ +const stylesFromArray = (styles, text) => { + if (!Array.isArray(styles)) { + return styles; + } + const textLines = text.split('\n'), stylesObject = {}; + let charIndex = -1, styleIndex = 0; + //loop through each textLine + for (let i = 0; i < textLines.length; i++) { + //loop through each character of the current line + for (let c = 0; c < textLines[i].length; c++) { + charIndex++; + //check if there's a style collection that includes the current character + if (styles[styleIndex] && + styles[styleIndex].start <= charIndex && + charIndex < styles[styleIndex].end) { + //create object for line index if it doesn't exist + stylesObject[i] = stylesObject[i] || {}; + //assign a style at this character's index + stylesObject[i][c] = Object.assign({}, styles[styleIndex].style); + //if character is at the end of the current style collection, move to the next + if (charIndex === styles[styleIndex].end - 1) { + styleIndex++; + } + } + } + } + return stylesObject; +}; - /** @ignore */ - var onLoadCallback = function () { - callback && callback.call(context, img, false); - img = img.onload = img.onerror = null; - }; +/** + * Creates canvas element + * @static + * @memberOf fabric.util + * @return {CanvasElement} initialized canvas element + */ +const createCanvasElement = () => fabric$1.document.createElement('canvas'); +/** + * Creates image element (works on client and node) + * @static + * @memberOf fabric.util + * @return {HTMLImageElement} HTML image element + */ +const createImage = () => fabric$1.document.createElement('img'); +/** + * Creates a canvas element that is a copy of another and is also painted + * @param {CanvasElement} canvas to copy size and content of + * @static + * @memberOf fabric.util + * @return {CanvasElement} initialized canvas element + */ +const copyCanvasElement = (canvas) => { + var _a; + const newCanvas = createCanvasElement(); + newCanvas.width = canvas.width; + newCanvas.height = canvas.height; + (_a = newCanvas.getContext('2d')) === null || _a === void 0 ? void 0 : _a.drawImage(canvas, 0, 0); + return newCanvas; +}; +/** + * since 2.6.0 moved from canvas instance to utility. + * possibly useless + * @param {CanvasElement} canvasEl to copy size and content of + * @param {String} format 'jpeg' or 'png', in some browsers 'webp' is ok too + * @param {Number} quality <= 1 and > 0 + * @static + * @memberOf fabric.util + * @return {String} data url + */ +const toDataURL = (canvasEl, format, quality) => canvasEl.toDataURL(`image/${format}`, quality); - img.onload = onLoadCallback; - /** @ignore */ - img.onerror = function() { - fabric.log('Error loading ' + img.src); - callback && callback.call(context, null, true); - img = img.onload = img.onerror = null; - }; +/** + * A wrapper around Number#toFixed, which contrary to native method returns number, not string. + * @static + * @memberOf fabric.util + * @param {number|string} number number to operate on + * @param {number} fractionDigits number of fraction digits to "leave" + * @return {number} + */ +const toFixed = (number, fractionDigits) => parseFloat(Number(number).toFixed(fractionDigits)); - // data-urls appear to be buggy with crossOrigin - // https://github.com/kangax/fabric.js/commit/d0abb90f1cd5c5ef9d2a94d3fb21a22330da3e0a#commitcomment-4513767 - // see https://code.google.com/p/chromium/issues/detail?id=315152 - // https://bugzilla.mozilla.org/show_bug.cgi?id=935069 - // crossOrigin null is the same as not set. - if (url.indexOf('data') !== 0 && - crossOrigin !== undefined && - crossOrigin !== null) { - img.crossOrigin = crossOrigin; - } +/** + * Returns array of attributes for given svg that fabric parses + * @memberOf fabric.util + * @param {SVGElementName} type Type of svg element (eg. 'circle') + * @return {Array} string names of supported attributes + */ +const getSvgAttributes = (type) => { + const commonAttributes = ['instantiated_by_use', 'style', 'id', 'class']; + switch (type) { + case "linearGradient" /* SVGElementName.linearGradient */: + return commonAttributes.concat([ + 'x1', + 'y1', + 'x2', + 'y2', + 'gradientUnits', + 'gradientTransform', + ]); + case 'radialGradient': + return commonAttributes.concat([ + 'gradientUnits', + 'gradientTransform', + 'cx', + 'cy', + 'r', + 'fx', + 'fy', + 'fr', + ]); + case 'stop': + return commonAttributes.concat(['offset', 'stop-color', 'stop-opacity']); + } + return commonAttributes; +}; +/** + * Converts from attribute value to pixel value if applicable. + * Returns converted pixels or original value not converted. + * @param {string} value number to operate on + * @param {number} fontSize + * @return {number} + */ +const parseUnit = (value, fontSize) => { + const unit = /\D{0,2}$/.exec(value), number = parseFloat(value); + if (!fontSize) { + fontSize = DEFAULT_SVG_FONT_SIZE; + } + const dpi = config.DPI; + switch (unit === null || unit === void 0 ? void 0 : unit[0]) { + case "mm" /* SupportedSVGUnit.mm */: + return (number * dpi) / 25.4; + case "cm" /* SupportedSVGUnit.cm */: + return (number * dpi) / 2.54; + case "in" /* SupportedSVGUnit.in */: + return number * dpi; + case "pt" /* SupportedSVGUnit.pt */: + return (number * dpi) / 72; // or * 4 / 3 + case "pc" /* SupportedSVGUnit.pc */: + return ((number * dpi) / 72) * 12; // or * 16 + case "em" /* SupportedSVGUnit.em */: + return number * fontSize; + default: + return number; + } +}; +/** + * Groups SVG elements (usually those retrieved from SVG document) + * @static + * @memberOf fabric.util + * @param {Array} elements fabric.Object(s) parsed from svg, to group + * @return {fabric.Object|fabric.Group} + */ +const groupSVGElements = (elements) => { + if (elements && elements.length === 1) { + return elements[0]; + } + return new fabric$1.Group(elements); +}; +// align can be either none or undefined or a combination of mid/max +const parseAlign = (align) => { + //divide align in alignX and alignY + if (align && align !== "none" /* MinMidMax.none */) { + return [align.slice(1, 4), align.slice(5, 8)]; + } + else if (align === "none" /* MinMidMax.none */) { + return [align, align]; + } + return ["Mid" /* MinMidMax.mid */, "Mid" /* MinMidMax.mid */]; +}; +/** + * Parse preserveAspectRatio attribute from element + * https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/preserveAspectRatio + * @param {string} attribute to be parsed + * @return {Object} an object containing align and meetOrSlice attribute + */ +const parsePreserveAspectRatioAttribute = (attribute) => { + const [firstPart, secondPart] = attribute.trim().split(' '); + const [alignX, alignY] = parseAlign(firstPart); + return { + meetOrSlice: secondPart || "meet" /* MeetOrSlice.meet */, + alignX, + alignY, + }; +}; +/** + * given an array of 6 number returns something like `"matrix(...numbers)"` + * @memberOf fabric.util + * @param {TMat2D} transform an array with 6 numbers + * @return {String} transform matrix for svg + */ +const matrixToSVG = (transform) => 'matrix(' + + transform + .map((value) => toFixed(value, config.NUM_FRACTION_DIGITS)) + .join(' ') + + ')'; - // IE10 / IE11-Fix: SVG contents from data: URI - // will only be available if the IMG is present - // in the DOM (and visible) - if (url.substring(0,14) === 'data:image/svg') { - img.onload = null; - fabric.util.loadImageInDom(img, onLoadCallback); - } +/** + * Finds the scale for the object source to fit inside the object destination, + * keeping aspect ratio intact. + * respect the total allowed area for the cache. + * @memberOf fabric.util + * @param {Object | fabric.Object} source + * @param {Number} source.height natural unscaled height of the object + * @param {Number} source.width natural unscaled width of the object + * @param {Object | fabric.Object} destination + * @param {Number} destination.height natural unscaled height of the object + * @param {Number} destination.width natural unscaled width of the object + * @return {Number} scale factor to apply to source to fit into destination + */ +const findScaleToFit = (source, destination) => Math.min(destination.width / source.width, destination.height / source.height); +/** + * Finds the scale for the object source to cover entirely the object destination, + * keeping aspect ratio intact. + * respect the total allowed area for the cache. + * @memberOf fabric.util + * @param {Object | fabric.Object} source + * @param {Number} source.height natural unscaled height of the object + * @param {Number} source.width natural unscaled width of the object + * @param {Object | fabric.Object} destination + * @param {Number} destination.height natural unscaled height of the object + * @param {Number} destination.width natural unscaled width of the object + * @return {Number} scale factor to apply to source to cover destination + */ +const findScaleToCover = (source, destination) => Math.max(destination.width / source.width, destination.height / source.height); - img.src = url; - }, +const capValue = (min, value, max) => Math.max(min, Math.min(value, max)); - /** - * Attaches SVG image with data: URL to the dom - * @memberOf fabric.util - * @param {Object} img Image object with data:image/svg src - * @param {Function} callback Callback; invoked with loaded image - * @return {Object} DOM element (div containing the SVG image) - */ - loadImageInDom: function(img, onLoadCallback) { - var div = fabric.document.createElement('div'); - div.style.width = div.style.height = '1px'; - div.style.left = div.style.top = '-100%'; - div.style.position = 'absolute'; - div.appendChild(img); - fabric.document.querySelector('body').appendChild(div); - /** - * Wrap in function to: - * 1. Call existing callback - * 2. Cleanup DOM - */ - img.onload = function () { - onLoadCallback(); - div.parentNode.removeChild(div); - div = null; - }; - }, +/** + * Calculates bounding box (left, top, width, height) from given `points` + * @static + * @memberOf fabric.util + * @param {Point[]} points + * @return {Object} Object with left, top, width, height properties + */ +const makeBoundingBoxFromPoints = (points) => { + const { min, max } = points.reduce(({ min, max }, curr) => { + return { + min: min.min(curr), + max: max.max(curr), + }; + }, { min: points[0], max: points[0] }); + const size = max.subtract(min); + return { + left: min.x, + top: min.y, + width: size.x, + height: size.y, + }; +}; - /** - * Creates corresponding fabric instances from their object representations - * @static - * @memberOf fabric.util - * @param {Array} objects Objects to enliven - * @param {Function} callback Callback to invoke when all objects are created - * @param {String} namespace Namespace to get klass "Class" object from - * @param {Function} reviver Method for further parsing of object elements, - * called after each fabric object created. - */ - enlivenObjects: function(objects, callback, namespace, reviver) { - objects = objects || []; +/** + * given an object and a transform, apply the inverse transform to the object, + * this is equivalent to remove from that object that transformation, so that + * added in a space with the removed transform, the object will be the same as before. + * Removing from an object a transform that scale by 2 is like scaling it by 1/2. + * Removing from an object a transform that rotate by 30deg is like rotating by 30deg + * in the opposite direction. + * This util is used to add objects inside transformed groups or nested groups. + * @memberOf fabric.util + * @param {fabric.Object} object the object you want to transform + * @param {Array} transform the destination transform + */ +const removeTransformFromObject = (object, transform) => { + const inverted = invertTransform(transform), finalTransform = multiplyTransformMatrices(inverted, object.calcOwnMatrix()); + applyTransformToObject(object, finalTransform); +}; +/** + * given an object and a transform, apply the transform to the object. + * this is equivalent to change the space where the object is drawn. + * Adding to an object a transform that scale by 2 is like scaling it by 2. + * This is used when removing an object from an active selection for example. + * @memberOf fabric.util + * @param {fabric.Object} object the object you want to transform + * @param {Array} transform the destination transform + */ +const addTransformToObject = (object, transform) => applyTransformToObject(object, multiplyTransformMatrices(transform, object.calcOwnMatrix())); +/** + * discard an object transform state and apply the one from the matrix. + * @memberOf fabric.util + * @param {fabric.Object} object the object you want to transform + * @param {Array} transform the destination transform + */ +const applyTransformToObject = (object, transform) => { + const _a = qrDecompose(transform), { translateX, translateY, scaleX, scaleY } = _a, otherOptions = __rest(_a, ["translateX", "translateY", "scaleX", "scaleY"]), center = new Point(translateX, translateY); + object.flipX = false; + object.flipY = false; + Object.assign(object, otherOptions); + object.set({ scaleX, scaleY }); + object.setPositionByOrigin(center, 'center', 'center'); +}; +/** + * reset an object transform state to neutral. Top and left are not accounted for + * @static + * @memberOf fabric.util + * @param {fabric.Object} target object to transform + */ +const resetObjectTransform = (target) => { + target.scaleX = 1; + target.scaleY = 1; + target.skewX = 0; + target.skewY = 0; + target.flipX = false; + target.flipY = false; + target.rotate(0); +}; +/** + * Extract Object transform values + * @static + * @memberOf fabric.util + * @param {fabric.Object} target object to read from + * @return {Object} Components of transform + */ +const saveObjectTransform = (target) => ({ + scaleX: target.scaleX, + scaleY: target.scaleY, + skewX: target.skewX, + skewY: target.skewY, + angle: target.angle, + left: target.left, + flipX: target.flipX, + flipY: target.flipY, + top: target.top, +}); +/** + * given a width and height, return the size of the bounding box + * that can contains the box with width/height with applied transform + * described in options. + * Use to calculate the boxes around objects for controls. + * @memberOf fabric.util + * @param {Number} width + * @param {Number} height + * @param {Object} options + * @param {Number} options.scaleX + * @param {Number} options.scaleY + * @param {Number} options.skewX + * @param {Number} options.skewY + * @returns {Point} size + */ +const sizeAfterTransform = (width, height, options) => { + const dimX = width / 2, dimY = height / 2, transformMatrix = calcDimensionsMatrix(options), points = [ + new Point(-dimX, -dimY), + new Point(dimX, -dimY), + new Point(-dimX, dimY), + new Point(dimX, dimY), + ].map((p) => p.transform(transformMatrix)), bbox = makeBoundingBoxFromPoints(points); + return new Point(bbox.width, bbox.height); +}; - var enlivenedObjects = [], - numLoadedObjects = 0, - numTotalObjects = objects.length; +/** + * We are actually looking for the transformation from the destination plane to the source plane (change of basis matrix)\ + * The object will exist on the destination plane and we want it to seem unchanged by it so we invert the destination matrix (`to`) and then apply the source matrix (`from`) + * @param [from] + * @param [to] + * @returns + */ +const calcPlaneChangeMatrix = (from = iMatrix, to = iMatrix) => multiplyTransformMatrices(invertTransform(to), from); +/** + * Sends a point from the source coordinate plane to the destination coordinate plane.\ + * From the canvas/viewer's perspective the point remains unchanged. + * + * @example Send point from canvas plane to group plane + * var obj = new fabric.Rect({ left: 20, top: 20, width: 60, height: 60, strokeWidth: 0 }); + * var group = new fabric.Group([obj], { strokeWidth: 0 }); + * var sentPoint1 = fabric.util.sendPointToPlane(new Point(50, 50), undefined, group.calcTransformMatrix()); + * var sentPoint2 = fabric.util.sendPointToPlane(new Point(50, 50), fabric.iMatrix, group.calcTransformMatrix()); + * console.log(sentPoint1, sentPoint2) // both points print (0,0) which is the center of group + * + * @static + * @memberOf fabric.util + * @see {fabric.util.transformPointRelativeToCanvas} for transforming relative to canvas + * @param {Point} point + * @param {TMat2D} [from] plane matrix containing object. Passing `undefined` is equivalent to passing the identity matrix, which means `point` exists in the canvas coordinate plane. + * @param {TMat2D} [to] destination plane matrix to contain object. Passing `undefined` means `point` should be sent to the canvas coordinate plane. + * @returns {Point} transformed point + */ +const sendPointToPlane = (point, from = iMatrix, to = iMatrix) => +// we are actually looking for the transformation from the destination plane to the source plane (which is a linear mapping) +// the object will exist on the destination plane and we want it to seem unchanged by it so we reverse the destination matrix (to) and then apply the source matrix (from) +point.transform(calcPlaneChangeMatrix(from, to)); +/** + * Transform point relative to canvas. + * From the viewport/viewer's perspective the point remains unchanged. + * + * `child` relation means `point` exists in the coordinate plane created by `canvas`. + * In other words point is measured acoording to canvas' top left corner + * meaning that if `point` is equal to (0,0) it is positioned at canvas' top left corner. + * + * `sibling` relation means `point` exists in the same coordinate plane as canvas. + * In other words they both relate to the same (0,0) and agree on every point, which is how an event relates to canvas. + * + * @static + * @memberOf fabric.util + * @param {Point} point + * @param {fabric.StaticCanvas} canvas + * @param {'sibling'|'child'} relationBefore current relation of point to canvas + * @param {'sibling'|'child'} relationAfter desired relation of point to canvas + * @returns {Point} transformed point + */ +const transformPointRelativeToCanvas = (point, canvas, relationBefore, relationAfter) => { + // is this still needed with TS? + if (relationBefore !== "child" /* ObjectRelation.child */ && + relationBefore !== "sibling" /* ObjectRelation.sibling */) { + throw new Error('fabric.js: received bad argument ' + relationBefore); + } + if (relationAfter !== "child" /* ObjectRelation.child */ && + relationAfter !== "sibling" /* ObjectRelation.sibling */) { + throw new Error('fabric.js: received bad argument ' + relationAfter); + } + if (relationBefore === relationAfter) { + return point; + } + const t = canvas.viewportTransform; + return point.transform(relationAfter === 'child' ? invertTransform(t) : t); +}; +/** + * + * A util that abstracts applying transform to objects.\ + * Sends `object` to the destination coordinate plane by applying the relevant transformations.\ + * Changes the space/plane where `object` is drawn.\ + * From the canvas/viewer's perspective `object` remains unchanged. + * + * @example Move clip path from one object to another while preserving it's appearance as viewed by canvas/viewer + * let obj, obj2; + * let clipPath = new fabric.Circle({ radius: 50 }); + * obj.clipPath = clipPath; + * // render + * fabric.util.sendObjectToPlane(clipPath, obj.calcTransformMatrix(), obj2.calcTransformMatrix()); + * obj.clipPath = undefined; + * obj2.clipPath = clipPath; + * // render, clipPath now clips obj2 but seems unchanged from the eyes of the viewer + * + * @example Clip an object's clip path with an existing object + * let obj, existingObj; + * let clipPath = new fabric.Circle({ radius: 50 }); + * obj.clipPath = clipPath; + * let transformTo = fabric.util.multiplyTransformMatrices(obj.calcTransformMatrix(), clipPath.calcTransformMatrix()); + * fabric.util.sendObjectToPlane(existingObj, existingObj.group?.calcTransformMatrix(), transformTo); + * clipPath.clipPath = existingObj; + * + * @static + * @memberof fabric.util + * @param {fabric.Object} object + * @param {Matrix} [from] plane matrix containing object. Passing `undefined` is equivalent to passing the identity matrix, which means `object` is a direct child of canvas. + * @param {Matrix} [to] destination plane matrix to contain object. Passing `undefined` means `object` should be sent to the canvas coordinate plane. + * @returns {Matrix} the transform matrix that was applied to `object` + */ +const sendObjectToPlane = (object, from, to) => { + const t = calcPlaneChangeMatrix(from, to); + applyTransformToObject(object, multiplyTransformMatrices(t, object.calcOwnMatrix())); + return t; +}; - function onLoaded() { - if (++numLoadedObjects === numTotalObjects) { - callback && callback(enlivenedObjects.filter(function(obj) { - // filter out undefined objects (objects that gave error) - return obj; - })); +/** + * Camelizes a string + * @memberOf fabric.util.string + * @param {String} string String to camelize + * @return {String} Camelized version of a string + */ +const camelize = (string) => string.replace(/-+(.)?/g, function (match, character) { + return character ? character.toUpperCase() : ''; +}); +/** + * Capitalizes a string + * @memberOf fabric.util.string + * @param {String} string String to capitalize + * @param {Boolean} [firstLetterOnly] If true only first letter is capitalized + * and other letters stay untouched, if false first letter is capitalized + * and other letters are converted to lowercase. + * @return {String} Capitalized version of a string + */ +const capitalize = (string, firstLetterOnly = false) => `${string.charAt(0).toUpperCase()}${firstLetterOnly ? string.slice(1) : string.slice(1).toLowerCase()}`; +/** + * Escapes XML in a string + * @memberOf fabric.util.string + * @param {String} string String to escape + * @return {String} Escaped version of a string + */ +const escapeXml = (string) => string + .replace(/&/g, '&') + .replace(/"/g, '"') + .replace(/'/g, ''') + .replace(//g, '>'); +/** + * Divide a string in the user perceived single units + * @memberOf fabric.util.string + * @param {String} textstring String to escape + * @return {Array} array containing the graphemes + */ +const graphemeSplit = (textstring) => { + const graphemes = []; + for (let i = 0, chr; i < textstring.length; i++) { + if ((chr = getWholeChar(textstring, i)) === false) { + continue; + } + graphemes.push(chr); + } + return graphemes; +}; +// taken from mdn in the charAt doc page. +const getWholeChar = (str, i) => { + const code = str.charCodeAt(i); + if (isNaN(code)) { + return ''; // Position not found + } + if (code < 0xd800 || code > 0xdfff) { + return str.charAt(i); + } + // High surrogate (could change last hex to 0xDB7F to treat high private + // surrogates as single characters) + if (0xd800 <= code && code <= 0xdbff) { + if (str.length <= i + 1) { + throw 'High surrogate without following low surrogate'; + } + const next = str.charCodeAt(i + 1); + if (0xdc00 > next || next > 0xdfff) { + throw 'High surrogate without following low surrogate'; } - } + return str.charAt(i) + str.charAt(i + 1); + } + // Low surrogate (0xDC00 <= code && code <= 0xDFFF) + if (i === 0) { + throw 'Low surrogate without preceding high surrogate'; + } + const prev = str.charCodeAt(i - 1); + // (could change last hex to 0xDB7F to treat high private + // surrogates as single characters) + if (0xd800 > prev || prev > 0xdbff) { + throw 'Low surrogate without preceding high surrogate'; + } + // We can pass over low surrogates now as the second component + // in a pair which we have already processed + return false; +}; - if (!numTotalObjects) { - callback && callback(enlivenedObjects); +/** + * Returns klass "Class" object of given namespace + * @memberOf fabric.util + * @param {String} type Type of object (eg. 'circle') + * @param {object} namespace Namespace to get klass "Class" object from + * @return {Object} klass "Class" + */ +const getKlass = (type, namespace = fabric$1) => namespace[capitalize(camelize(type), true)]; +/** + * Loads image element from given url and resolve it, or catch. + * @memberOf fabric.util + * @param {String} url URL representing an image + * @param {Object} [options] image loading options + * @param {string} [options.crossOrigin] cors value for the image loading, default to anonymous + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @param {Promise} img the loaded image. + */ +const loadImage = (url, { signal, crossOrigin = null } = {}) => new Promise(function (resolve, reject) { + if (signal && signal.aborted) { + return reject(new Error('`options.signal` is in `aborted` state')); + } + const img = createImage(); + let abort; + if (signal) { + abort = function (err) { + img.src = ''; + reject(err); + }; + signal.addEventListener('abort', abort, { once: true }); + } + const done = function () { + img.onload = img.onerror = null; + abort && (signal === null || signal === void 0 ? void 0 : signal.removeEventListener('abort', abort)); + resolve(img); + }; + if (!url) { + done(); return; - } - - objects.forEach(function (o, index) { - // if sparse array - if (!o || !o.type) { - onLoaded(); - return; - } - var klass = fabric.util.getKlass(o.type, namespace); - klass.fromObject(o, function (obj, error) { - error || (enlivenedObjects[index] = obj); - reviver && reviver(o, obj, error); - onLoaded(); + } + img.onload = done; + img.onerror = function () { + abort && (signal === null || signal === void 0 ? void 0 : signal.removeEventListener('abort', abort)); + reject(new Error('Error loading ' + img.src)); + }; + crossOrigin && (img.crossOrigin = crossOrigin); + img.src = url; +}); +/** + * Creates corresponding fabric instances from their object representations + * @static + * @memberOf fabric.util + * @param {Object[]} objects Objects to enliven + * @param {object} [options] + * @param {object} [options.namespace] Namespace to get klass "Class" object from + * @param {(serializedObj: object, instance: fabric.Object) => any} [options.reviver] Method for further parsing of object elements, + * called after each fabric object created. + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @returns {Promise} + */ +const enlivenObjects = (objects, { signal, reviver = noop, namespace = fabric$1 } = {}) => new Promise((resolve, reject) => { + const instances = []; + signal && signal.addEventListener('abort', reject, { once: true }); + Promise.all(objects.map((obj) => getKlass(obj.type, namespace) + .fromObject(obj, { + signal, + reviver, + namespace, + }) + .then((fabricInstance) => { + reviver(obj, fabricInstance); + instances.push(fabricInstance); + return fabricInstance; + }))) + .then(resolve) + .catch((error) => { + // cleanup + instances.forEach(function (instance) { + instance.dispose && instance.dispose(); }); - }); - }, - - /** - * Creates corresponding fabric instances residing in an object, e.g. `clipPath` - * @see {@link fabric.Object.ENLIVEN_PROPS} - * @param {Object} object - * @param {Object} [context] assign enlived props to this object (pass null to skip this) - * @param {(objects:fabric.Object[]) => void} callback - */ - enlivenObjectEnlivables: function (object, context, callback) { - var enlivenProps = fabric.Object.ENLIVEN_PROPS.filter(function (key) { return !!object[key]; }); - fabric.util.enlivenObjects(enlivenProps.map(function (key) { return object[key]; }), function (enlivedProps) { - var objects = {}; - enlivenProps.forEach(function (key, index) { - objects[key] = enlivedProps[index]; - context && (context[key] = enlivedProps[index]); + reject(error); + }) + .finally(() => { + signal && signal.removeEventListener('abort', reject); + }); +}); +/** + * Creates corresponding fabric instances residing in an object, e.g. `clipPath` + * @static + * @memberOf fabric.util + * @param {Object} object with properties to enlive ( fill, stroke, clipPath, path ) + * @param {object} [options] + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @returns {Promise<{[key:string]:fabric.Object|fabric.Pattern|fabric.Gradient|null}>} the input object with enlived values + */ +const enlivenObjectEnlivables = (serializedObject, { signal } = {}) => new Promise((resolve, reject) => { + const instances = []; + signal && signal.addEventListener('abort', reject, { once: true }); + // enlive every possible property + const promises = Object.values(serializedObject).map((value) => { + if (!value) { + return value; + } + // gradient + if (value.colorStops) { + return new fabric$1.Gradient(value); + } + // clipPath + if (value.type) { + return enlivenObjects([value], { signal }).then(([enlived]) => { + instances.push(enlived); + return enlived; + }); + } + // pattern + if (value.source) { + return fabric$1.Pattern.fromObject(value, { signal }).then((pattern) => { + instances.push(pattern); + return pattern; + }); + } + return value; + }); + const keys = Object.keys(serializedObject); + Promise.all(promises) + .then((enlived) => { + return enlived.reduce(function (acc, instance, index) { + acc[keys[index]] = instance; + return acc; + }, {}); + }) + .then(resolve) + .catch(function (error) { + // cleanup + instances.forEach((instance) => { + instance.dispose && instance.dispose(); }); - callback && callback(objects); - }); - }, - - /** - * Create and wait for loading of patterns - * @static - * @memberOf fabric.util - * @param {Array} patterns Objects to enliven - * @param {Function} callback Callback to invoke when all objects are created - * called after each fabric object created. - */ - enlivenPatterns: function(patterns, callback) { - patterns = patterns || []; + reject(error); + }) + .finally(function () { + signal && signal.removeEventListener('abort', reject); + }); +}); - function onLoaded() { - if (++numLoadedPatterns === numPatterns) { - callback && callback(enlivenedPatterns); +/** + * Populates an object with properties of another object + * @param {Object} source Source object + * @param {string[]} properties Properties names to include + * @returns object populated with the picked keys + */ +const pick = (source, keys = []) => { + return keys.reduce((o, key) => { + if (key in source) { + o[key] = source[key]; } - } - - var enlivenedPatterns = [], - numLoadedPatterns = 0, - numPatterns = patterns.length; + return o; + }, {}); +}; - if (!numPatterns) { - callback && callback(enlivenedPatterns); - return; - } - - patterns.forEach(function (p, index) { - if (p && p.source) { - new fabric.Pattern(p, function(pattern) { - enlivenedPatterns[index] = pattern; - onLoaded(); - }); - } - else { - enlivenedPatterns[index] = p; - onLoaded(); - } - }); - }, - - /** - * Groups SVG elements (usually those retrieved from SVG document) - * @static - * @memberOf fabric.util - * @param {Array} elements SVG elements to group - * @param {Object} [options] Options object - * @param {String} path Value to set sourcePath to - * @return {fabric.Object|fabric.Group} - */ - groupSVGElements: function(elements, options, path) { - var object; - if (elements && elements.length === 1) { - return elements[0]; - } - if (options) { - if (options.width && options.height) { - options.centerPoint = { - x: options.width / 2, - y: options.height / 2 - }; - } - else { - delete options.width; - delete options.height; - } - } - object = new fabric.Group(elements, options); - if (typeof path !== 'undefined') { - object.sourcePath = path; - } - return object; - }, - - /** - * Populates an object with properties of another object - * @static - * @memberOf fabric.util - * @param {Object} source Source object - * @param {Object} destination Destination object - * @return {Array} properties Properties names to include - */ - populateWithProperties: function(source, destination, properties) { - if (properties && Object.prototype.toString.call(properties) === '[object Array]') { - for (var i = 0, len = properties.length; i < len; i++) { - if (properties[i] in source) { - destination[properties[i]] = source[properties[i]]; - } - } - } - }, - - /** - * Creates canvas element - * @static - * @memberOf fabric.util - * @return {CanvasElement} initialized canvas element - */ - createCanvasElement: function() { - return fabric.document.createElement('canvas'); - }, - - /** - * Creates a canvas element that is a copy of another and is also painted - * @param {CanvasElement} canvas to copy size and content of - * @static - * @memberOf fabric.util - * @return {CanvasElement} initialized canvas element - */ - copyCanvasElement: function(canvas) { - var newCanvas = fabric.util.createCanvasElement(); - newCanvas.width = canvas.width; - newCanvas.height = canvas.height; - newCanvas.getContext('2d').drawImage(canvas, 0, 0); - return newCanvas; - }, - - /** - * since 2.6.0 moved from canvas instance to utility. - * @param {CanvasElement} canvasEl to copy size and content of - * @param {String} format 'jpeg' or 'png', in some browsers 'webp' is ok too - * @param {Number} quality <= 1 and > 0 - * @static - * @memberOf fabric.util - * @return {String} data url - */ - toDataURL: function(canvasEl, format, quality) { - return canvasEl.toDataURL('image/' + format, quality); - }, - - /** - * Creates image element (works on client and node) - * @static - * @memberOf fabric.util - * @return {HTMLImageElement} HTML image element - */ - createImage: function() { - return fabric.document.createElement('img'); - }, - - /** - * Multiply matrix A by matrix B to nest transformations - * @static - * @memberOf fabric.util - * @param {Array} a First transformMatrix - * @param {Array} b Second transformMatrix - * @param {Boolean} is2x2 flag to multiply matrices as 2x2 matrices - * @return {Array} The product of the two transform matrices - */ - multiplyTransformMatrices: function(a, b, is2x2) { - // Matrix multiply a * b - return [ - a[0] * b[0] + a[2] * b[1], - a[1] * b[0] + a[3] * b[1], - a[0] * b[2] + a[2] * b[3], - a[1] * b[2] + a[3] * b[3], - is2x2 ? 0 : a[0] * b[4] + a[2] * b[5] + a[4], - is2x2 ? 0 : a[1] * b[4] + a[3] * b[5] + a[5] - ]; - }, - - /** - * Decomposes standard 2x3 matrix into transform components - * @static - * @memberOf fabric.util - * @param {Array} a transformMatrix - * @return {Object} Components of transform - */ - qrDecompose: function(a) { - var angle = atan2(a[1], a[0]), - denom = pow(a[0], 2) + pow(a[1], 2), - scaleX = sqrt(denom), - scaleY = (a[0] * a[3] - a[2] * a[1]) / scaleX, - skewX = atan2(a[0] * a[2] + a[1] * a [3], denom); - return { - angle: angle / PiBy180, - scaleX: scaleX, - scaleY: scaleY, - skewX: skewX / PiBy180, - skewY: 0, - translateX: a[4], - translateY: a[5] - }; - }, - - /** - * Returns a transform matrix starting from an object of the same kind of - * the one returned from qrDecompose, useful also if you want to calculate some - * transformations from an object that is not enlived yet - * @static - * @memberOf fabric.util - * @param {Object} options - * @param {Number} [options.angle] angle in degrees - * @return {Number[]} transform matrix - */ - calcRotateMatrix: function(options) { - if (!options.angle) { - return fabric.iMatrix.concat(); - } - var theta = fabric.util.degreesToRadians(options.angle), - cos = fabric.util.cos(theta), - sin = fabric.util.sin(theta); - return [cos, sin, -sin, cos, 0, 0]; - }, - - /** - * Returns a transform matrix starting from an object of the same kind of - * the one returned from qrDecompose, useful also if you want to calculate some - * transformations from an object that is not enlived yet. - * is called DimensionsTransformMatrix because those properties are the one that influence - * the size of the resulting box of the object. - * @static - * @memberOf fabric.util - * @param {Object} options - * @param {Number} [options.scaleX] - * @param {Number} [options.scaleY] - * @param {Boolean} [options.flipX] - * @param {Boolean} [options.flipY] - * @param {Number} [options.skewX] - * @param {Number} [options.skewY] - * @return {Number[]} transform matrix - */ - calcDimensionsMatrix: function(options) { - var scaleX = typeof options.scaleX === 'undefined' ? 1 : options.scaleX, - scaleY = typeof options.scaleY === 'undefined' ? 1 : options.scaleY, - scaleMatrix = [ - options.flipX ? -scaleX : scaleX, - 0, - 0, - options.flipY ? -scaleY : scaleY, - 0, - 0], - multiply = fabric.util.multiplyTransformMatrices, - degreesToRadians = fabric.util.degreesToRadians; - if (options.skewX) { - scaleMatrix = multiply( - scaleMatrix, - [1, 0, Math.tan(degreesToRadians(options.skewX)), 1], - true); - } - if (options.skewY) { - scaleMatrix = multiply( - scaleMatrix, - [1, Math.tan(degreesToRadians(options.skewY)), 0, 1], - true); - } - return scaleMatrix; - }, - - /** - * Returns a transform matrix starting from an object of the same kind of - * the one returned from qrDecompose, useful also if you want to calculate some - * transformations from an object that is not enlived yet - * @static - * @memberOf fabric.util - * @param {Object} options - * @param {Number} [options.angle] - * @param {Number} [options.scaleX] - * @param {Number} [options.scaleY] - * @param {Boolean} [options.flipX] - * @param {Boolean} [options.flipY] - * @param {Number} [options.skewX] - * @param {Number} [options.skewX] - * @param {Number} [options.translateX] - * @param {Number} [options.translateY] - * @return {Number[]} transform matrix - */ - composeMatrix: function(options) { - var matrix = [1, 0, 0, 1, options.translateX || 0, options.translateY || 0], - multiply = fabric.util.multiplyTransformMatrices; - if (options.angle) { - matrix = multiply(matrix, fabric.util.calcRotateMatrix(options)); - } - if (options.scaleX !== 1 || options.scaleY !== 1 || - options.skewX || options.skewY || options.flipX || options.flipY) { - matrix = multiply(matrix, fabric.util.calcDimensionsMatrix(options)); - } - return matrix; - }, - - /** - * reset an object transform state to neutral. Top and left are not accounted for - * @static - * @memberOf fabric.util - * @param {fabric.Object} target object to transform - */ - resetObjectTransform: function (target) { - target.scaleX = 1; - target.scaleY = 1; - target.skewX = 0; - target.skewY = 0; - target.flipX = false; - target.flipY = false; - target.rotate(0); - }, - - /** - * Extract Object transform values - * @static - * @memberOf fabric.util - * @param {fabric.Object} target object to read from - * @return {Object} Components of transform - */ - saveObjectTransform: function (target) { - return { - scaleX: target.scaleX, - scaleY: target.scaleY, - skewX: target.skewX, - skewY: target.skewY, - angle: target.angle, - left: target.left, - flipX: target.flipX, - flipY: target.flipY, - top: target.top - }; - }, - - /** - * Returns true if context has transparent pixel - * at specified location (taking tolerance into account) - * @param {CanvasRenderingContext2D} ctx context - * @param {Number} x x coordinate - * @param {Number} y y coordinate - * @param {Number} tolerance Tolerance - */ - isTransparent: function(ctx, x, y, tolerance) { - - // If tolerance is > 0 adjust start coords to take into account. - // If moves off Canvas fix to 0 - if (tolerance > 0) { - if (x > tolerance) { - x -= tolerance; - } - else { - x = 0; - } - if (y > tolerance) { - y -= tolerance; - } - else { - y = 0; - } - } - - var _isTransparent = true, i, temp, - imageData = ctx.getImageData(x, y, (tolerance * 2) || 1, (tolerance * 2) || 1), - l = imageData.data.length; - - // Split image data - for tolerance > 1, pixelDataSize = 4; - for (i = 3; i < l; i += 4) { - temp = imageData.data[i]; - _isTransparent = temp <= 0; - if (_isTransparent === false) { - break; // Stop if colour found - } - } - - imageData = null; - - return _isTransparent; - }, - - /** - * Parse preserveAspectRatio attribute from element - * @param {string} attribute to be parsed - * @return {Object} an object containing align and meetOrSlice attribute - */ - parsePreserveAspectRatioAttribute: function(attribute) { - var meetOrSlice = 'meet', alignX = 'Mid', alignY = 'Mid', - aspectRatioAttrs = attribute.split(' '), align; - - if (aspectRatioAttrs && aspectRatioAttrs.length) { - meetOrSlice = aspectRatioAttrs.pop(); - if (meetOrSlice !== 'meet' && meetOrSlice !== 'slice') { - align = meetOrSlice; - meetOrSlice = 'meet'; - } - else if (aspectRatioAttrs.length) { - align = aspectRatioAttrs.pop(); - } - } - //divide align in alignX and alignY - alignX = align !== 'none' ? align.slice(1, 4) : 'none'; - alignY = align !== 'none' ? align.slice(5, 8) : 'none'; - return { - meetOrSlice: meetOrSlice, - alignX: alignX, - alignY: alignY - }; - }, - - /** - * Clear char widths cache for the given font family or all the cache if no - * fontFamily is specified. - * Use it if you know you are loading fonts in a lazy way and you are not waiting - * for custom fonts to load properly when adding text objects to the canvas. - * If a text object is added when its own font is not loaded yet, you will get wrong - * measurement and so wrong bounding boxes. - * After the font cache is cleared, either change the textObject text content or call - * initDimensions() to trigger a recalculation - * @memberOf fabric.util - * @param {String} [fontFamily] font family to clear - */ - clearFabricFontCache: function(fontFamily) { - fontFamily = (fontFamily || '').toLowerCase(); - if (!fontFamily) { - fabric.charWidthsCache = { }; - } - else if (fabric.charWidthsCache[fontFamily]) { - delete fabric.charWidthsCache[fontFamily]; - } - }, - - /** - * Given current aspect ratio, determines the max width and height that can - * respect the total allowed area for the cache. - * @memberOf fabric.util - * @param {Number} ar aspect ratio - * @param {Number} maximumArea Maximum area you want to achieve - * @return {Object.x} Limited dimensions by X - * @return {Object.y} Limited dimensions by Y - */ - limitDimsByArea: function(ar, maximumArea) { - var roughWidth = Math.sqrt(maximumArea * ar), - perfLimitSizeY = Math.floor(maximumArea / roughWidth); - return { x: Math.floor(roughWidth), y: perfLimitSizeY }; - }, - - capValue: function(min, value, max) { - return Math.max(min, Math.min(value, max)); - }, - - /** - * Finds the scale for the object source to fit inside the object destination, - * keeping aspect ratio intact. - * respect the total allowed area for the cache. - * @memberOf fabric.util - * @param {Object | fabric.Object} source - * @param {Number} source.height natural unscaled height of the object - * @param {Number} source.width natural unscaled width of the object - * @param {Object | fabric.Object} destination - * @param {Number} destination.height natural unscaled height of the object - * @param {Number} destination.width natural unscaled width of the object - * @return {Number} scale factor to apply to source to fit into destination - */ - findScaleToFit: function(source, destination) { - return Math.min(destination.width / source.width, destination.height / source.height); - }, - - /** - * Finds the scale for the object source to cover entirely the object destination, - * keeping aspect ratio intact. - * respect the total allowed area for the cache. - * @memberOf fabric.util - * @param {Object | fabric.Object} source - * @param {Number} source.height natural unscaled height of the object - * @param {Number} source.width natural unscaled width of the object - * @param {Object | fabric.Object} destination - * @param {Number} destination.height natural unscaled height of the object - * @param {Number} destination.width natural unscaled width of the object - * @return {Number} scale factor to apply to source to cover destination - */ - findScaleToCover: function(source, destination) { - return Math.max(destination.width / source.width, destination.height / source.height); - }, - - /** - * given an array of 6 number returns something like `"matrix(...numbers)"` - * @memberOf fabric.util - * @param {Array} transform an array with 6 numbers - * @return {String} transform matrix for svg - * @return {Object.y} Limited dimensions by Y - */ - matrixToSVG: function(transform) { - return 'matrix(' + transform.map(function(value) { - return fabric.util.toFixed(value, fabric.Object.NUM_FRACTION_DIGITS); - }).join(' ') + ')'; - }, - - /** - * given an object and a transform, apply the inverse transform to the object, - * this is equivalent to remove from that object that transformation, so that - * added in a space with the removed transform, the object will be the same as before. - * Removing from an object a transform that scale by 2 is like scaling it by 1/2. - * Removing from an object a transfrom that rotate by 30deg is like rotating by 30deg - * in the opposite direction. - * This util is used to add objects inside transformed groups or nested groups. - * @memberOf fabric.util - * @param {fabric.Object} object the object you want to transform - * @param {Array} transform the destination transform - */ - removeTransformFromObject: function(object, transform) { - var inverted = fabric.util.invertTransform(transform), - finalTransform = fabric.util.multiplyTransformMatrices(inverted, object.calcOwnMatrix()); - fabric.util.applyTransformToObject(object, finalTransform); - }, - - /** - * given an object and a transform, apply the transform to the object. - * this is equivalent to change the space where the object is drawn. - * Adding to an object a transform that scale by 2 is like scaling it by 2. - * This is used when removing an object from an active selection for example. - * @memberOf fabric.util - * @param {fabric.Object} object the object you want to transform - * @param {Array} transform the destination transform - */ - addTransformToObject: function(object, transform) { - fabric.util.applyTransformToObject( - object, - fabric.util.multiplyTransformMatrices(transform, object.calcOwnMatrix()) - ); - }, - - /** - * discard an object transform state and apply the one from the matrix. - * @memberOf fabric.util - * @param {fabric.Object} object the object you want to transform - * @param {Array} transform the destination transform - */ - applyTransformToObject: function(object, transform) { - var options = fabric.util.qrDecompose(transform), - center = new fabric.Point(options.translateX, options.translateY); - object.flipX = false; - object.flipY = false; - object.set('scaleX', options.scaleX); - object.set('scaleY', options.scaleY); - object.skewX = options.skewX; - object.skewY = options.skewY; - object.angle = options.angle; - object.setPositionByOrigin(center, 'center', 'center'); - }, - - /** - * given a width and height, return the size of the bounding box - * that can contains the box with width/height with applied transform - * described in options. - * Use to calculate the boxes around objects for controls. - * @memberOf fabric.util - * @param {Number} width - * @param {Number} height - * @param {Object} options - * @param {Number} options.scaleX - * @param {Number} options.scaleY - * @param {Number} options.skewX - * @param {Number} options.skewY - * @return {Object.x} width of containing - * @return {Object.y} height of containing - */ - sizeAfterTransform: function(width, height, options) { - var dimX = width / 2, dimY = height / 2, - points = [ - { - x: -dimX, - y: -dimY - }, - { - x: dimX, - y: -dimY - }, - { - x: -dimX, - y: dimY - }, - { - x: dimX, - y: dimY - }], - transformMatrix = fabric.util.calcDimensionsMatrix(options), - bbox = fabric.util.makeBoundingBoxFromPoints(points, transformMatrix); - return { - x: bbox.width, - y: bbox.height, - }; - }, - - /** - * Merges 2 clip paths into one visually equal clip path - * - * **IMPORTANT**:\ - * Does **NOT** clone the arguments, clone them proir if necessary. - * - * Creates a wrapper (group) that contains one clip path and is clipped by the other so content is kept where both overlap. - * Use this method if both the clip paths may have nested clip paths of their own, so assigning one to the other's clip path property is not possible. - * - * In order to handle the `inverted` property we follow logic described in the following cases:\ - * **(1)** both clip paths are inverted - the clip paths pass the inverted prop to the wrapper and loose it themselves.\ - * **(2)** one is inverted and the other isn't - the wrapper shouldn't become inverted and the inverted clip path must clip the non inverted one to produce an identical visual effect.\ - * **(3)** both clip paths are not inverted - wrapper and clip paths remain unchanged. - * - * @memberOf fabric.util - * @param {fabric.Object} c1 - * @param {fabric.Object} c2 - * @returns {fabric.Object} merged clip path - */ - mergeClipPaths: function (c1, c2) { - var a = c1, b = c2; - if (a.inverted && !b.inverted) { - // case (2) - a = c2; - b = c1; - } - // `b` becomes `a`'s clip path so we transform `b` to `a` coordinate plane - fabric.util.applyTransformToObject( - b, - fabric.util.multiplyTransformMatrices( - fabric.util.invertTransform(a.calcTransformMatrix()), - b.calcTransformMatrix() - ) - ); - // assign the `inverted` prop to the wrapping group - var inverted = a.inverted && b.inverted; - if (inverted) { - // case (1) - a.inverted = b.inverted = false; - } - return new fabric.Group([a], { clipPath: b, inverted: inverted }); - }, - }; -})(typeof exports !== 'undefined' ? exports : this); - - -(function() { - var _join = Array.prototype.join, - commandLengths = { - m: 2, - l: 2, - h: 1, - v: 1, - c: 6, - s: 4, - q: 4, - t: 2, - a: 7 - }, - repeatedCommands = { - m: 'l', - M: 'L' - }; - function segmentToBezier(th2, th3, cosTh, sinTh, rx, ry, cx1, cy1, mT, fromX, fromY) { - var costh2 = fabric.util.cos(th2), - sinth2 = fabric.util.sin(th2), - costh3 = fabric.util.cos(th3), - sinth3 = fabric.util.sin(th3), - toX = cosTh * rx * costh3 - sinTh * ry * sinth3 + cx1, - toY = sinTh * rx * costh3 + cosTh * ry * sinth3 + cy1, - cp1X = fromX + mT * ( -cosTh * rx * sinth2 - sinTh * ry * costh2), - cp1Y = fromY + mT * ( -sinTh * rx * sinth2 + cosTh * ry * costh2), - cp2X = toX + mT * ( cosTh * rx * sinth3 + sinTh * ry * costh3), - cp2Y = toY + mT * ( sinTh * rx * sinth3 - cosTh * ry * costh3); - - return ['C', - cp1X, cp1Y, - cp2X, cp2Y, - toX, toY - ]; - } - - /* Adapted from http://dxr.mozilla.org/mozilla-central/source/content/svg/content/src/nsSVGPathDataParser.cpp - * by Andrea Bogazzi code is under MPL. if you don't have a copy of the license you can take it here - * http://mozilla.org/MPL/2.0/ - */ - function arcToSegments(toX, toY, rx, ry, large, sweep, rotateX) { - var PI = Math.PI, th = rotateX * PI / 180, - sinTh = fabric.util.sin(th), - cosTh = fabric.util.cos(th), - fromX = 0, fromY = 0; - - rx = Math.abs(rx); - ry = Math.abs(ry); - - var px = -cosTh * toX * 0.5 - sinTh * toY * 0.5, - py = -cosTh * toY * 0.5 + sinTh * toX * 0.5, - rx2 = rx * rx, ry2 = ry * ry, py2 = py * py, px2 = px * px, - pl = rx2 * ry2 - rx2 * py2 - ry2 * px2, - root = 0; +//@ts-nocheck +function getSvgRegex(arr) { + return new RegExp('^(' + arr.join('|') + ')\\b', 'i'); +} +//@ts-nocheck +const cssRules = {}; +const gradientDefs = {}; +const clipPaths = {}; +const reNum = '(?:[-+]?(?:\\d+|\\d*\\.\\d+)(?:[eE][-+]?\\d+)?)'; +const svgNS = 'http://www.w3.org/2000/svg'; +const commaWsp = '(?:\\s+,?\\s*|,\\s*)'; +const rePathCommand = /([-+]?((\d+\.\d+)|((\d+)|(\.\d+)))(?:[eE][-+]?\d+)?)/gi; +const reFontDeclaration = new RegExp('(normal|italic)?\\s*(normal|small-caps)?\\s*' + + '(normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900)?\\s*(' + + reNum + + '(?:px|cm|mm|em|pt|pc|in)*)(?:\\/(normal|' + + reNum + + '))?\\s+(.*)'); +const svgValidTagNames = [ + 'path', + 'circle', + 'polygon', + 'polyline', + 'ellipse', + 'rect', + 'line', + 'image', + 'text', +], svgViewBoxElements = ['symbol', 'image', 'marker', 'pattern', 'view', 'svg'], svgInvalidAncestors = [ + 'pattern', + 'defs', + 'symbol', + 'metadata', + 'clipPath', + 'mask', + 'desc', +], svgValidParents = ['symbol', 'g', 'a', 'svg', 'clipPath', 'defs'], attributesMap = { + cx: 'left', + x: 'left', + r: 'radius', + cy: 'top', + y: 'top', + display: 'visible', + visibility: 'visible', + transform: 'transformMatrix', + 'fill-opacity': 'fillOpacity', + 'fill-rule': 'fillRule', + 'font-family': 'fontFamily', + 'font-size': 'fontSize', + 'font-style': 'fontStyle', + 'font-weight': 'fontWeight', + 'letter-spacing': 'charSpacing', + 'paint-order': 'paintFirst', + 'stroke-dasharray': 'strokeDashArray', + 'stroke-dashoffset': 'strokeDashOffset', + 'stroke-linecap': 'strokeLineCap', + 'stroke-linejoin': 'strokeLineJoin', + 'stroke-miterlimit': 'strokeMiterLimit', + 'stroke-opacity': 'strokeOpacity', + 'stroke-width': 'strokeWidth', + 'text-decoration': 'textDecoration', + 'text-anchor': 'textAnchor', + opacity: 'opacity', + 'clip-path': 'clipPath', + 'clip-rule': 'clipRule', + 'vector-effect': 'strokeUniform', + 'image-rendering': 'imageSmoothing', +}, colorAttributes = { + stroke: 'strokeOpacity', + fill: 'fillOpacity', +}, fSize = 'font-size', cPath = 'clip-path'; +const svgValidTagNamesRegEx = getSvgRegex(svgValidTagNames); +const svgViewBoxElementsRegEx = getSvgRegex(svgViewBoxElements); +const svgInvalidAncestorsRegEx = getSvgRegex(svgInvalidAncestors); +const svgValidParentsRegEx = getSvgRegex(svgValidParents); +// http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute +// matches, e.g.: +14.56e-12, etc. +const reViewBoxAttrValue = new RegExp('^' + + '\\s*(' + + reNum + + '+)\\s*,?' + + '\\s*(' + + reNum + + '+)\\s*,?' + + '\\s*(' + + reNum + + '+)\\s*,?' + + '\\s*(' + + reNum + + '+)\\s*' + + '$'); + +//@ts-nocheck +const commandLengths = { + m: 2, + l: 2, + h: 1, + v: 1, + c: 6, + s: 4, + q: 4, + t: 2, + a: 7, +}; +const repeatedCommands = { + m: 'l', + M: 'L', +}; +const segmentToBezier = (th2, th3, cosTh, sinTh, rx, ry, cx1, cy1, mT, fromX, fromY) => { + const costh2 = cos(th2), sinth2 = sin(th2), costh3 = cos(th3), sinth3 = sin(th3), toX = cosTh * rx * costh3 - sinTh * ry * sinth3 + cx1, toY = sinTh * rx * costh3 + cosTh * ry * sinth3 + cy1, cp1X = fromX + mT * (-cosTh * rx * sinth2 - sinTh * ry * costh2), cp1Y = fromY + mT * (-sinTh * rx * sinth2 + cosTh * ry * costh2), cp2X = toX + mT * (cosTh * rx * sinth3 + sinTh * ry * costh3), cp2Y = toY + mT * (sinTh * rx * sinth3 - cosTh * ry * costh3); + return ['C', cp1X, cp1Y, cp2X, cp2Y, toX, toY]; +}; +/* Adapted from http://dxr.mozilla.org/mozilla-central/source/content/svg/content/src/nsSVGPathDataParser.cpp + * by Andrea Bogazzi code is under MPL. if you don't have a copy of the license you can take it here + * http://mozilla.org/MPL/2.0/ + */ +const arcToSegments = (toX, toY, rx, ry, large, sweep, rotateX) => { + let fromX = 0, fromY = 0, root = 0; + const PI = Math.PI, th = rotateX * PiBy180, sinTh = sin(th), cosTh = cos(th), px = 0.5 * (-cosTh * toX - sinTh * toY), py = 0.5 * (-cosTh * toY + sinTh * toX), rx2 = rx ** 2, ry2 = ry ** 2, py2 = py ** 2, px2 = px ** 2, pl = rx2 * ry2 - rx2 * py2 - ry2 * px2; + let _rx = Math.abs(rx); + let _ry = Math.abs(ry); if (pl < 0) { - var s = Math.sqrt(1 - pl / (rx2 * ry2)); - rx *= s; - ry *= s; + const s = Math.sqrt(1 - pl / (rx2 * ry2)); + _rx *= s; + _ry *= s; } else { - root = (large === sweep ? -1.0 : 1.0) * - Math.sqrt( pl / (rx2 * py2 + ry2 * px2)); + root = + (large === sweep ? -1.0 : 1.0) * Math.sqrt(pl / (rx2 * py2 + ry2 * px2)); } - - var cx = root * rx * py / ry, - cy = -root * ry * px / rx, - cx1 = cosTh * cx - sinTh * cy + toX * 0.5, - cy1 = sinTh * cx + cosTh * cy + toY * 0.5, - mTheta = calcVectorAngle(1, 0, (px - cx) / rx, (py - cy) / ry), - dtheta = calcVectorAngle((px - cx) / rx, (py - cy) / ry, (-px - cx) / rx, (-py - cy) / ry); - + const cx = (root * _rx * py) / _ry, cy = (-root * _ry * px) / _rx, cx1 = cosTh * cx - sinTh * cy + toX * 0.5, cy1 = sinTh * cx + cosTh * cy + toY * 0.5; + let mTheta = calcVectorAngle(1, 0, (px - cx) / _rx, (py - cy) / _ry); + let dtheta = calcVectorAngle((px - cx) / _rx, (py - cy) / _ry, (-px - cx) / _rx, (-py - cy) / _ry); if (sweep === 0 && dtheta > 0) { - dtheta -= 2 * PI; + dtheta -= 2 * PI; } else if (sweep === 1 && dtheta < 0) { - dtheta += 2 * PI; + dtheta += 2 * PI; } - // Convert into cubic bezier segments <= 90deg - var segments = Math.ceil(Math.abs(dtheta / PI * 2)), - result = [], mDelta = dtheta / segments, - mT = 8 / 3 * Math.sin(mDelta / 4) * Math.sin(mDelta / 4) / Math.sin(mDelta / 2), - th3 = mTheta + mDelta; - - for (var i = 0; i < segments; i++) { - result[i] = segmentToBezier(mTheta, th3, cosTh, sinTh, rx, ry, cx1, cy1, mT, fromX, fromY); - fromX = result[i][5]; - fromY = result[i][6]; - mTheta = th3; - th3 += mDelta; + const segments = Math.ceil(Math.abs((dtheta / PI) * 2)), result = new Array(segments), mDelta = dtheta / segments, mT = ((8 / 3) * Math.sin(mDelta / 4) * Math.sin(mDelta / 4)) / + Math.sin(mDelta / 2); + let th3 = mTheta + mDelta; + for (let i = 0; i < segments; i++) { + result[i] = segmentToBezier(mTheta, th3, cosTh, sinTh, _rx, _ry, cx1, cy1, mT, fromX, fromY); + fromX = result[i][5]; + fromY = result[i][6]; + mTheta = th3; + th3 += mDelta; } return result; - } - - /* - * Private - */ - function calcVectorAngle(ux, uy, vx, vy) { - var ta = Math.atan2(uy, ux), - tb = Math.atan2(vy, vx); +}; +/* + * Private + */ +const calcVectorAngle = (ux, uy, vx, vy) => { + const ta = Math.atan2(uy, ux), tb = Math.atan2(vy, vx); if (tb >= ta) { - return tb - ta; + return tb - ta; } else { - return 2 * Math.PI - (ta - tb); + return 2 * Math.PI - (ta - tb); } - } - - /** - * Calculate bounding box of a beziercurve - * @param {Number} x0 starting point - * @param {Number} y0 - * @param {Number} x1 first control point - * @param {Number} y1 - * @param {Number} x2 secondo control point - * @param {Number} y2 - * @param {Number} x3 end of bezier - * @param {Number} y3 - */ - // taken from http://jsbin.com/ivomiq/56/edit no credits available for that. - // TODO: can we normalize this with the starting points set at 0 and then translated the bbox? - function getBoundsOfCurve(x0, y0, x1, y1, x2, y2, x3, y3) { - var argsString; - if (fabric.cachesBoundsOfCurve) { - argsString = _join.call(arguments); - if (fabric.boundsOfCurveCache[argsString]) { - return fabric.boundsOfCurveCache[argsString]; - } +}; +// functions for the Cubic beizer +// taken from: https://github.com/konvajs/konva/blob/7.0.5/src/shapes/Path.ts#L350 +const CB1 = (t) => t ** 3; +const CB2 = (t) => 3 * t ** 2 * (1 - t); +const CB3 = (t) => 3 * t * (1 - t) ** 2; +const CB4 = (t) => (1 - t) ** 3; +/** + * Calculate bounding box of a beziercurve + * @param {Number} x0 starting point + * @param {Number} y0 + * @param {Number} x1 first control point + * @param {Number} y1 + * @param {Number} x2 secondo control point + * @param {Number} y2 + * @param {Number} x3 end of bezier + * @param {Number} y3 + */ +// taken from http://jsbin.com/ivomiq/56/edit no credits available for that. +// TODO: can we normalize this with the starting points set at 0 and then translated the bbox? +function getBoundsOfCurve(x0, y0, x1, y1, x2, y2, x3, y3) { + let argsString; + if (config.cachesBoundsOfCurve) { + // eslint-disable-next-line + argsString = [...arguments].join(); + if (cache.boundsOfCurveCache[argsString]) { + return cache.boundsOfCurveCache[argsString]; + } } - - var sqrt = Math.sqrt, - min = Math.min, max = Math.max, - abs = Math.abs, tvalues = [], - bounds = [[], []], - a, b, c, t, t1, t2, b2ac, sqrtb2ac; - - b = 6 * x0 - 12 * x1 + 6 * x2; - a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3; - c = 3 * x1 - 3 * x0; - - for (var i = 0; i < 2; ++i) { - if (i > 0) { - b = 6 * y0 - 12 * y1 + 6 * y2; - a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3; - c = 3 * y1 - 3 * y0; - } - - if (abs(a) < 1e-12) { - if (abs(b) < 1e-12) { - continue; + const sqrt = Math.sqrt, abs = Math.abs, tvalues = [], bounds = [[], []]; + let b = 6 * x0 - 12 * x1 + 6 * x2; + let a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3; + let c = 3 * x1 - 3 * x0; + for (let i = 0; i < 2; ++i) { + if (i > 0) { + b = 6 * y0 - 12 * y1 + 6 * y2; + a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3; + c = 3 * y1 - 3 * y0; + } + if (abs(a) < 1e-12) { + if (abs(b) < 1e-12) { + continue; + } + const t = -c / b; + if (0 < t && t < 1) { + tvalues.push(t); + } + continue; + } + const b2ac = b * b - 4 * c * a; + if (b2ac < 0) { + continue; } - t = -c / b; - if (0 < t && t < 1) { - tvalues.push(t); + const sqrtb2ac = sqrt(b2ac); + const t1 = (-b + sqrtb2ac) / (2 * a); + if (0 < t1 && t1 < 1) { + tvalues.push(t1); + } + const t2 = (-b - sqrtb2ac) / (2 * a); + if (0 < t2 && t2 < 1) { + tvalues.push(t2); } - continue; - } - b2ac = b * b - 4 * c * a; - if (b2ac < 0) { - continue; - } - sqrtb2ac = sqrt(b2ac); - t1 = (-b + sqrtb2ac) / (2 * a); - if (0 < t1 && t1 < 1) { - tvalues.push(t1); - } - t2 = (-b - sqrtb2ac) / (2 * a); - if (0 < t2 && t2 < 1) { - tvalues.push(t2); - } } - - var x, y, j = tvalues.length, jlen = j, mt; + let j = tvalues.length; + const jlen = j; + const iterator = getPointOnCubicBezierIterator(x0, y0, x1, y1, x2, y2, x3, y3); while (j--) { - t = tvalues[j]; - mt = 1 - t; - x = (mt * mt * mt * x0) + (3 * mt * mt * t * x1) + (3 * mt * t * t * x2) + (t * t * t * x3); - bounds[0][j] = x; - - y = (mt * mt * mt * y0) + (3 * mt * mt * t * y1) + (3 * mt * t * t * y2) + (t * t * t * y3); - bounds[1][j] = y; + const { x, y } = iterator(tvalues[j]); + bounds[0][j] = x; + bounds[1][j] = y; } - bounds[0][jlen] = x0; bounds[1][jlen] = y0; bounds[0][jlen + 1] = x3; bounds[1][jlen + 1] = y3; - var result = [ - { - x: min.apply(null, bounds[0]), - y: min.apply(null, bounds[1]) - }, - { - x: max.apply(null, bounds[0]), - y: max.apply(null, bounds[1]) - } + const result = [ + { + x: Math.min(...bounds[0]), + y: Math.min(...bounds[1]), + }, + { + x: Math.max(...bounds[0]), + y: Math.max(...bounds[1]), + }, ]; - if (fabric.cachesBoundsOfCurve) { - fabric.boundsOfCurveCache[argsString] = result; + if (config.cachesBoundsOfCurve) { + cache.boundsOfCurveCache[argsString] = result; } return result; - } - - /** - * Converts arc to a bunch of bezier curves - * @param {Number} fx starting point x - * @param {Number} fy starting point y - * @param {Array} coords Arc command - */ - function fromArcToBeziers(fx, fy, coords) { - var rx = coords[1], - ry = coords[2], - rot = coords[3], - large = coords[4], - sweep = coords[5], - tx = coords[6], - ty = coords[7], - segsNorm = arcToSegments(tx - fx, ty - fy, rx, ry, large, sweep, rot); - - for (var i = 0, len = segsNorm.length; i < len; i++) { - segsNorm[i][1] += fx; - segsNorm[i][2] += fy; - segsNorm[i][3] += fx; - segsNorm[i][4] += fy; - segsNorm[i][5] += fx; - segsNorm[i][6] += fy; +} +/** + * Converts arc to a bunch of bezier curves + * @param {Number} fx starting point x + * @param {Number} fy starting point y + * @param {Array} coords Arc command + */ +const fromArcToBeziers = (fx, fy, [_, rx, ry, rot, large, sweep, tx, ty] = []) => { + const segsNorm = arcToSegments(tx - fx, ty - fy, rx, ry, large, sweep, rot); + for (let i = 0, len = segsNorm.length; i < len; i++) { + segsNorm[i][1] += fx; + segsNorm[i][2] += fy; + segsNorm[i][3] += fx; + segsNorm[i][4] += fy; + segsNorm[i][5] += fx; + segsNorm[i][6] += fy; } return segsNorm; - }; - - /** - * This function take a parsed SVG path and make it simpler for fabricJS logic. - * simplification consist of: only UPPERCASE absolute commands ( relative converted to absolute ) - * S converted in C, T converted in Q, A converted in C. - * @param {Array} path the array of commands of a parsed svg path for fabric.Path - * @return {Array} the simplified array of commands of a parsed svg path for fabric.Path - */ - function makePathSimpler(path) { +}; +/** + * This function take a parsed SVG path and make it simpler for fabricJS logic. + * simplification consist of: only UPPERCASE absolute commands ( relative converted to absolute ) + * S converted in C, T converted in Q, A converted in C. + * @param {Array} path the array of commands of a parsed svg path for fabric.Path + * @return {Array} the simplified array of commands of a parsed svg path for fabric.Path + */ +const makePathSimpler = (path) => { // x and y represent the last point of the path. the previous command point. // we add them to each relative command to make it an absolute comment. // we also swap the v V h H with L, because are easier to transform. - var x = 0, y = 0, len = path.length, - // x1 and y1 represent the last point of the subpath. the subpath is started with - // m or M command. When a z or Z command is drawn, x and y need to be resetted to - // the last x1 and y1. - x1 = 0, y1 = 0, current, i, converted, - // previous will host the letter of the previous command, to handle S and T. - // controlX and controlY will host the previous reflected control point - destinationPath = [], previous, controlX, controlY; - for (i = 0; i < len; ++i) { - converted = false; - current = path[i].slice(0); - switch (current[0]) { // first letter - case 'l': // lineto, relative - current[0] = 'L'; - current[1] += x; - current[2] += y; - // falls through - case 'L': - x = current[1]; - y = current[2]; - break; - case 'h': // horizontal lineto, relative - current[1] += x; - // falls through - case 'H': - current[0] = 'L'; - current[2] = y; - x = current[1]; - break; - case 'v': // vertical lineto, relative - current[1] += y; - // falls through - case 'V': - current[0] = 'L'; - y = current[1]; - current[1] = x; - current[2] = y; - break; - case 'm': // moveTo, relative - current[0] = 'M'; - current[1] += x; - current[2] += y; - // falls through - case 'M': - x = current[1]; - y = current[2]; - x1 = current[1]; - y1 = current[2]; - break; - case 'c': // bezierCurveTo, relative - current[0] = 'C'; - current[1] += x; - current[2] += y; - current[3] += x; - current[4] += y; - current[5] += x; - current[6] += y; - // falls through - case 'C': - controlX = current[3]; - controlY = current[4]; - x = current[5]; - y = current[6]; - break; - case 's': // shorthand cubic bezierCurveTo, relative - current[0] = 'S'; - current[1] += x; - current[2] += y; - current[3] += x; - current[4] += y; - // falls through - case 'S': - // would be sScC but since we are swapping sSc for C, we check just that. - if (previous === 'C') { - // calculate reflection of previous control points - controlX = 2 * x - controlX; - controlY = 2 * y - controlY; - } - else { - // If there is no previous command or if the previous command was not a C, c, S, or s, - // the control point is coincident with the current point - controlX = x; - controlY = y; - } - x = current[3]; - y = current[4]; - current[0] = 'C'; - current[5] = current[3]; - current[6] = current[4]; - current[3] = current[1]; - current[4] = current[2]; - current[1] = controlX; - current[2] = controlY; - // current[3] and current[4] are NOW the second control point. - // we keep it for the next reflection. - controlX = current[3]; - controlY = current[4]; - break; - case 'q': // quadraticCurveTo, relative - current[0] = 'Q'; - current[1] += x; - current[2] += y; - current[3] += x; - current[4] += y; - // falls through - case 'Q': - controlX = current[1]; - controlY = current[2]; - x = current[3]; - y = current[4]; - break; - case 't': // shorthand quadraticCurveTo, relative - current[0] = 'T'; - current[1] += x; - current[2] += y; - // falls through - case 'T': - if (previous === 'Q') { - // calculate reflection of previous control point - controlX = 2 * x - controlX; - controlY = 2 * y - controlY; - } - else { - // If there is no previous command or if the previous command was not a Q, q, T or t, - // assume the control point is coincident with the current point - controlX = x; - controlY = y; - } - current[0] = 'Q'; - x = current[1]; - y = current[2]; - current[1] = controlX; - current[2] = controlY; - current[3] = x; - current[4] = y; - break; - case 'a': - current[0] = 'A'; - current[6] += x; - current[7] += y; - // falls through - case 'A': - converted = true; - destinationPath = destinationPath.concat(fromArcToBeziers(x, y, current)); - x = current[6]; - y = current[7]; - break; - case 'z': - case 'Z': - x = x1; - y = y1; - break; - default: - } - if (!converted) { - destinationPath.push(current); - } - previous = current[0]; + let x = 0, y = 0; + const len = path.length; + // x1 and y1 represent the last point of the subpath. the subpath is started with + // m or M command. When a z or Z command is drawn, x and y need to be resetted to + // the last x1 and y1. + let x1 = 0, y1 = 0; + // previous will host the letter of the previous command, to handle S and T. + // controlX and controlY will host the previous reflected control point + let destinationPath = [], previous, controlX, controlY; + for (let i = 0; i < len; ++i) { + let converted = false; + const current = path[i].slice(0); + switch (current[0] // first letter + ) { + case 'l': // lineto, relative + current[0] = 'L'; + current[1] += x; + current[2] += y; + // falls through + case 'L': + x = current[1]; + y = current[2]; + break; + case 'h': // horizontal lineto, relative + current[1] += x; + // falls through + case 'H': + current[0] = 'L'; + current[2] = y; + x = current[1]; + break; + case 'v': // vertical lineto, relative + current[1] += y; + // falls through + case 'V': + current[0] = 'L'; + y = current[1]; + current[1] = x; + current[2] = y; + break; + case 'm': // moveTo, relative + current[0] = 'M'; + current[1] += x; + current[2] += y; + // falls through + case 'M': + x = current[1]; + y = current[2]; + x1 = current[1]; + y1 = current[2]; + break; + case 'c': // bezierCurveTo, relative + current[0] = 'C'; + current[1] += x; + current[2] += y; + current[3] += x; + current[4] += y; + current[5] += x; + current[6] += y; + // falls through + case 'C': + controlX = current[3]; + controlY = current[4]; + x = current[5]; + y = current[6]; + break; + case 's': // shorthand cubic bezierCurveTo, relative + current[0] = 'S'; + current[1] += x; + current[2] += y; + current[3] += x; + current[4] += y; + // falls through + case 'S': + // would be sScC but since we are swapping sSc for C, we check just that. + if (previous === 'C') { + // calculate reflection of previous control points + controlX = 2 * x - controlX; + controlY = 2 * y - controlY; + } + else { + // If there is no previous command or if the previous command was not a C, c, S, or s, + // the control point is coincident with the current point + controlX = x; + controlY = y; + } + x = current[3]; + y = current[4]; + current[0] = 'C'; + current[5] = current[3]; + current[6] = current[4]; + current[3] = current[1]; + current[4] = current[2]; + current[1] = controlX; + current[2] = controlY; + // current[3] and current[4] are NOW the second control point. + // we keep it for the next reflection. + controlX = current[3]; + controlY = current[4]; + break; + case 'q': // quadraticCurveTo, relative + current[0] = 'Q'; + current[1] += x; + current[2] += y; + current[3] += x; + current[4] += y; + // falls through + case 'Q': + controlX = current[1]; + controlY = current[2]; + x = current[3]; + y = current[4]; + break; + case 't': // shorthand quadraticCurveTo, relative + current[0] = 'T'; + current[1] += x; + current[2] += y; + // falls through + case 'T': + if (previous === 'Q') { + // calculate reflection of previous control point + controlX = 2 * x - controlX; + controlY = 2 * y - controlY; + } + else { + // If there is no previous command or if the previous command was not a Q, q, T or t, + // assume the control point is coincident with the current point + controlX = x; + controlY = y; + } + current[0] = 'Q'; + x = current[1]; + y = current[2]; + current[1] = controlX; + current[2] = controlY; + current[3] = x; + current[4] = y; + break; + case 'a': + current[0] = 'A'; + current[6] += x; + current[7] += y; + // falls through + case 'A': + converted = true; + destinationPath = destinationPath.concat(fromArcToBeziers(x, y, current)); + x = current[6]; + y = current[7]; + break; + case 'z': + case 'Z': + x = x1; + y = y1; + break; + } + if (!converted) { + destinationPath.push(current); + } + previous = current[0]; } return destinationPath; - }; - - /** - * Calc length from point x1,y1 to x2,y2 - * @param {Number} x1 starting point x - * @param {Number} y1 starting point y - * @param {Number} x2 starting point x - * @param {Number} y2 starting point y - * @return {Number} length of segment - */ - function calcLineLength(x1, y1, x2, y2) { - return Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1)); - } - - // functions for the Cubic beizer - // taken from: https://github.com/konvajs/konva/blob/7.0.5/src/shapes/Path.ts#L350 - function CB1(t) { - return t * t * t; - } - function CB2(t) { - return 3 * t * t * (1 - t); - } - function CB3(t) { - return 3 * t * (1 - t) * (1 - t); - } - function CB4(t) { - return (1 - t) * (1 - t) * (1 - t); - } - - function getPointOnCubicBezierIterator(p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) { - return function(pct) { - var c1 = CB1(pct), c2 = CB2(pct), c3 = CB3(pct), c4 = CB4(pct); - return { +}; +// todo verify if we can just use the point class here +/** + * Calc length from point x1,y1 to x2,y2 + * @param {Number} x1 starting point x + * @param {Number} y1 starting point y + * @param {Number} x2 starting point x + * @param {Number} y2 starting point y + * @return {Number} length of segment + */ +const calcLineLength = (x1, y1, x2, y2) => Math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2); +const getPointOnCubicBezierIterator = (p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) => (pct) => { + const c1 = CB1(pct), c2 = CB2(pct), c3 = CB3(pct), c4 = CB4(pct); + return { x: p4x * c1 + p3x * c2 + p2x * c3 + p1x * c4, - y: p4y * c1 + p3y * c2 + p2y * c3 + p1y * c4 - }; + y: p4y * c1 + p3y * c2 + p2y * c3 + p1y * c4, }; - } - - function getTangentCubicIterator(p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) { - return function (pct) { - var invT = 1 - pct, - tangentX = (3 * invT * invT * (p2x - p1x)) + (6 * invT * pct * (p3x - p2x)) + - (3 * pct * pct * (p4x - p3x)), - tangentY = (3 * invT * invT * (p2y - p1y)) + (6 * invT * pct * (p3y - p2y)) + - (3 * pct * pct * (p4y - p3y)); - return Math.atan2(tangentY, tangentX); +}; +const QB1 = (t) => t ** 2; +const QB2 = (t) => 2 * t * (1 - t); +const QB3 = (t) => (1 - t) ** 2; +const getTangentCubicIterator = (p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) => (pct) => { + const qb1 = QB1(pct), qb2 = QB2(pct), qb3 = QB3(pct), tangentX = 3 * (qb3 * (p2x - p1x) + qb2 * (p3x - p2x) + qb1 * (p4x - p3x)), tangentY = 3 * (qb3 * (p2y - p1y) + qb2 * (p3y - p2y) + qb1 * (p4y - p3y)); + return Math.atan2(tangentY, tangentX); +}; +const getPointOnQuadraticBezierIterator = (p1x, p1y, p2x, p2y, p3x, p3y) => (pct) => { + const c1 = QB1(pct), c2 = QB2(pct), c3 = QB3(pct); + return { + x: p3x * c1 + p2x * c2 + p1x * c3, + y: p3y * c1 + p2y * c2 + p1y * c3, }; - } - - function QB1(t) { - return t * t; - } - - function QB2(t) { - return 2 * t * (1 - t); - } - - function QB3(t) { - return (1 - t) * (1 - t); - } - - function getPointOnQuadraticBezierIterator(p1x, p1y, p2x, p2y, p3x, p3y) { - return function(pct) { - var c1 = QB1(pct), c2 = QB2(pct), c3 = QB3(pct); - return { - x: p3x * c1 + p2x * c2 + p1x * c3, - y: p3y * c1 + p2y * c2 + p1y * c3 - }; - }; - } - - function getTangentQuadraticIterator(p1x, p1y, p2x, p2y, p3x, p3y) { - return function (pct) { - var invT = 1 - pct, - tangentX = (2 * invT * (p2x - p1x)) + (2 * pct * (p3x - p2x)), - tangentY = (2 * invT * (p2y - p1y)) + (2 * pct * (p3y - p2y)); - return Math.atan2(tangentY, tangentX); - }; - } - - - // this will run over a path segment ( a cubic or quadratic segment) and approximate it - // with 100 segemnts. This will good enough to calculate the length of the curve - function pathIterator(iterator, x1, y1) { - var tempP = { x: x1, y: y1 }, p, tmpLen = 0, perc; - for (perc = 1; perc <= 100; perc += 1) { - p = iterator(perc / 100); - tmpLen += calcLineLength(tempP.x, tempP.y, p.x, p.y); - tempP = p; +}; +const getTangentQuadraticIterator = (p1x, p1y, p2x, p2y, p3x, p3y) => (pct) => { + const invT = 1 - pct, tangentX = 2 * (invT * (p2x - p1x) + pct * (p3x - p2x)), tangentY = 2 * (invT * (p2y - p1y) + pct * (p3y - p2y)); + return Math.atan2(tangentY, tangentX); +}; +// this will run over a path segment ( a cubic or quadratic segment) and approximate it +// with 100 segemnts. This will good enough to calculate the length of the curve +const pathIterator = (iterator, x1, y1) => { + let tempP = { x: x1, y: y1 }, tmpLen = 0; + for (let perc = 1; perc <= 100; perc += 1) { + const p = iterator(perc / 100); + tmpLen += calcLineLength(tempP.x, tempP.y, p.x, p.y); + tempP = p; } return tmpLen; - } - - /** - * Given a pathInfo, and a distance in pixels, find the percentage from 0 to 1 - * that correspond to that pixels run over the path. - * The percentage will be then used to find the correct point on the canvas for the path. - * @param {Array} segInfo fabricJS collection of information on a parsed path - * @param {Number} distance from starting point, in pixels. - * @return {Object} info object with x and y ( the point on canvas ) and angle, the tangent on that point; - */ - function findPercentageForDistance(segInfo, distance) { - var perc = 0, tmpLen = 0, iterator = segInfo.iterator, tempP = { x: segInfo.x, y: segInfo.y }, - p, nextLen, nextStep = 0.01, angleFinder = segInfo.angleFinder, lastPerc; +}; +/** + * Given a pathInfo, and a distance in pixels, find the percentage from 0 to 1 + * that correspond to that pixels run over the path. + * The percentage will be then used to find the correct point on the canvas for the path. + * @param {Array} segInfo fabricJS collection of information on a parsed path + * @param {Number} distance from starting point, in pixels. + * @return {Object} info object with x and y ( the point on canvas ) and angle, the tangent on that point; + */ +const findPercentageForDistance = (segInfo, distance) => { + let perc = 0, tmpLen = 0, tempP = { x: segInfo.x, y: segInfo.y }, p, nextLen, nextStep = 0.01, lastPerc; // nextStep > 0.0001 covers 0.00015625 that 1/64th of 1/100 // the path + const iterator = segInfo.iterator, angleFinder = segInfo.angleFinder; while (tmpLen < distance && nextStep > 0.0001) { - p = iterator(perc); - lastPerc = perc; - nextLen = calcLineLength(tempP.x, tempP.y, p.x, p.y); - // compare tmpLen each cycle with distance, decide next perc to test. - if ((nextLen + tmpLen) > distance) { - // we discard this step and we make smaller steps. - perc -= nextStep; - nextStep /= 2; - } - else { - tempP = p; - perc += nextStep; - tmpLen += nextLen; - } + p = iterator(perc); + lastPerc = perc; + nextLen = calcLineLength(tempP.x, tempP.y, p.x, p.y); + // compare tmpLen each cycle with distance, decide next perc to test. + if (nextLen + tmpLen > distance) { + // we discard this step and we make smaller steps. + perc -= nextStep; + nextStep /= 2; + } + else { + tempP = p; + perc += nextStep; + tmpLen += nextLen; + } } p.angle = angleFinder(lastPerc); return p; - } - - /** - * Run over a parsed and simplifed path and extrac some informations. - * informations are length of each command and starting point - * @param {Array} path fabricJS parsed path commands - * @return {Array} path commands informations - */ - function getPathSegmentsInfo(path) { - var totalLength = 0, len = path.length, current, - //x2 and y2 are the coords of segment start - //x1 and y1 are the coords of the current point - x1 = 0, y1 = 0, x2 = 0, y2 = 0, info = [], iterator, tempInfo, angleFinder; - for (var i = 0; i < len; i++) { - current = path[i]; - tempInfo = { - x: x1, - y: y1, - command: current[0], - }; - switch (current[0]) { //first letter - case 'M': - tempInfo.length = 0; - x2 = x1 = current[1]; - y2 = y1 = current[2]; - break; - case 'L': - tempInfo.length = calcLineLength(x1, y1, current[1], current[2]); - x1 = current[1]; - y1 = current[2]; - break; - case 'C': - iterator = getPointOnCubicBezierIterator( - x1, - y1, - current[1], - current[2], - current[3], - current[4], - current[5], - current[6] - ); - angleFinder = getTangentCubicIterator( - x1, - y1, - current[1], - current[2], - current[3], - current[4], - current[5], - current[6] - ); - tempInfo.iterator = iterator; - tempInfo.angleFinder = angleFinder; - tempInfo.length = pathIterator(iterator, x1, y1); - x1 = current[5]; - y1 = current[6]; - break; - case 'Q': - iterator = getPointOnQuadraticBezierIterator( - x1, - y1, - current[1], - current[2], - current[3], - current[4] - ); - angleFinder = getTangentQuadraticIterator( - x1, - y1, - current[1], - current[2], - current[3], - current[4] - ); - tempInfo.iterator = iterator; - tempInfo.angleFinder = angleFinder; - tempInfo.length = pathIterator(iterator, x1, y1); - x1 = current[3]; - y1 = current[4]; - break; - case 'Z': - case 'z': - // we add those in order to ease calculations later - tempInfo.destX = x2; - tempInfo.destY = y2; - tempInfo.length = calcLineLength(x1, y1, x2, y2); - x1 = x2; - y1 = y2; - break; - } - totalLength += tempInfo.length; - info.push(tempInfo); +}; +/** + * Run over a parsed and simplifed path and extract some informations. + * informations are length of each command and starting point + * @param {Array} path fabricJS parsed path commands + * @return {Array} path commands informations + */ +const getPathSegmentsInfo = (path) => { + let totalLength = 0, current, + //x2 and y2 are the coords of segment start + //x1 and y1 are the coords of the current point + x1 = 0, y1 = 0, x2 = 0, y2 = 0, iterator, tempInfo, angleFinder; + const len = path.length, info = []; + for (let i = 0; i < len; i++) { + current = path[i]; + tempInfo = { + x: x1, + y: y1, + command: current[0], + }; + switch (current[0] //first letter + ) { + case 'M': + tempInfo.length = 0; + x2 = x1 = current[1]; + y2 = y1 = current[2]; + break; + case 'L': + tempInfo.length = calcLineLength(x1, y1, current[1], current[2]); + x1 = current[1]; + y1 = current[2]; + break; + case 'C': + iterator = getPointOnCubicBezierIterator(x1, y1, current[1], current[2], current[3], current[4], current[5], current[6]); + angleFinder = getTangentCubicIterator(x1, y1, current[1], current[2], current[3], current[4], current[5], current[6]); + tempInfo.iterator = iterator; + tempInfo.angleFinder = angleFinder; + tempInfo.length = pathIterator(iterator, x1, y1); + x1 = current[5]; + y1 = current[6]; + break; + case 'Q': + iterator = getPointOnQuadraticBezierIterator(x1, y1, current[1], current[2], current[3], current[4]); + angleFinder = getTangentQuadraticIterator(x1, y1, current[1], current[2], current[3], current[4]); + tempInfo.iterator = iterator; + tempInfo.angleFinder = angleFinder; + tempInfo.length = pathIterator(iterator, x1, y1); + x1 = current[3]; + y1 = current[4]; + break; + case 'Z': + case 'z': + // we add those in order to ease calculations later + tempInfo.destX = x2; + tempInfo.destY = y2; + tempInfo.length = calcLineLength(x1, y1, x2, y2); + x1 = x2; + y1 = y2; + break; + } + totalLength += tempInfo.length; + info.push(tempInfo); } info.push({ length: totalLength, x: x1, y: y1 }); return info; - } - - function getPointOnPath(path, distance, infos) { +}; +const getPointOnPath = (path, distance, infos) => { if (!infos) { - infos = getPathSegmentsInfo(path); + infos = getPathSegmentsInfo(path); } - var i = 0; - while ((distance - infos[i].length > 0) && i < (infos.length - 2)) { - distance -= infos[i].length; - i++; + let i = 0; + while (distance - infos[i].length > 0 && i < infos.length - 2) { + distance -= infos[i].length; + i++; } // var distance = infos[infos.length - 1] * perc; - var segInfo = infos[i], segPercent = distance / segInfo.length, - command = segInfo.command, segment = path[i], info; - + const segInfo = infos[i], segPercent = distance / segInfo.length, command = segInfo.command, segment = path[i]; + let info; switch (command) { - case 'M': - return { x: segInfo.x, y: segInfo.y, angle: 0 }; - case 'Z': - case 'z': - info = new fabric.Point(segInfo.x, segInfo.y).lerp( - new fabric.Point(segInfo.destX, segInfo.destY), - segPercent - ); - info.angle = Math.atan2(segInfo.destY - segInfo.y, segInfo.destX - segInfo.x); - return info; - case 'L': - info = new fabric.Point(segInfo.x, segInfo.y).lerp( - new fabric.Point(segment[1], segment[2]), - segPercent - ); - info.angle = Math.atan2(segment[2] - segInfo.y, segment[1] - segInfo.x); - return info; - case 'C': - return findPercentageForDistance(segInfo, distance); - case 'Q': - return findPercentageForDistance(segInfo, distance); - } - } - - /** - * - * @param {string} pathString - * @return {(string|number)[][]} An array of SVG path commands - * @example Usage - * parsePath('M 3 4 Q 3 5 2 1 4 0 Q 9 12 2 1 4 0') === [ - * ['M', 3, 4], - * ['Q', 3, 5, 2, 1, 4, 0], - * ['Q', 9, 12, 2, 1, 4, 0], - * ]; - * - */ - function parsePath(pathString) { - var result = [], - coords = [], - currentPath, - parsed, - re = fabric.rePathCommand, - rNumber = '[-+]?(?:\\d*\\.\\d+|\\d+\\.?)(?:[eE][-+]?\\d+)?\\s*', - rNumberCommaWsp = '(' + rNumber + ')' + fabric.commaWsp, - rFlagCommaWsp = '([01])' + fabric.commaWsp + '?', - rArcSeq = rNumberCommaWsp + '?' + rNumberCommaWsp + '?' + rNumberCommaWsp + rFlagCommaWsp + rFlagCommaWsp + - rNumberCommaWsp + '?(' + rNumber + ')', - regArcArgumentSequence = new RegExp(rArcSeq, 'g'), - match, - coordsStr, - // one of commands (m,M,l,L,q,Q,c,C,etc.) followed by non-command characters (i.e. command values) - path; - if (!pathString || !pathString.match) { - return result; + case 'M': + return { x: segInfo.x, y: segInfo.y, angle: 0 }; + case 'Z': + case 'z': + info = new Point(segInfo.x, segInfo.y).lerp(new Point(segInfo.destX, segInfo.destY), segPercent); + info.angle = Math.atan2(segInfo.destY - segInfo.y, segInfo.destX - segInfo.x); + return info; + case 'L': + info = new Point(segInfo.x, segInfo.y).lerp(new Point(segment[1], segment[2]), segPercent); + info.angle = Math.atan2(segment[2] - segInfo.y, segment[1] - segInfo.x); + return info; + case 'C': + return findPercentageForDistance(segInfo, distance); + case 'Q': + return findPercentageForDistance(segInfo, distance); } - path = pathString.match(/[mzlhvcsqta][^mzlhvcsqta]*/gi); - - for (var i = 0, coordsParsed, len = path.length; i < len; i++) { - currentPath = path[i]; - - coordsStr = currentPath.slice(1).trim(); - coords.length = 0; - - var command = currentPath.charAt(0); - coordsParsed = [command]; - - if (command.toLowerCase() === 'a') { - // arcs have special flags that apparently don't require spaces so handle special - for (var args; (args = regArcArgumentSequence.exec(coordsStr));) { - for (var j = 1; j < args.length; j++) { - coords.push(args[j]); - } +}; +/** + * + * @param {string} pathString + * @return {(string|number)[][]} An array of SVG path commands + * @example Usage + * parsePath('M 3 4 Q 3 5 2 1 4 0 Q 9 12 2 1 4 0') === [ + * ['M', 3, 4], + * ['Q', 3, 5, 2, 1, 4, 0], + * ['Q', 9, 12, 2, 1, 4, 0], + * ]; + * + */ +const parsePath = (pathString) => { + // one of commands (m,M,l,L,q,Q,c,C,etc.) followed by non-command characters (i.e. command values) + const re = rePathCommand, rNumber = '[-+]?(?:\\d*\\.\\d+|\\d+\\.?)(?:[eE][-+]?\\d+)?\\s*', rNumberCommaWsp = `(${rNumber})${commaWsp}`, rFlagCommaWsp = `([01])${commaWsp}?`, rArcSeq = `${rNumberCommaWsp}?${rNumberCommaWsp}?${rNumberCommaWsp}${rFlagCommaWsp}${rFlagCommaWsp}${rNumberCommaWsp}?(${rNumber})`, regArcArgumentSequence = new RegExp(rArcSeq, 'g'), result = []; + if (!pathString || !pathString.match) { + return result; + } + const path = pathString.match(/[mzlhvcsqta][^mzlhvcsqta]*/gi); + for (let i = 0, len = path.length; i < len; i++) { + const currentPath = path[i]; + const coordsStr = currentPath.slice(1).trim(); + const coords = []; + let command = currentPath.charAt(0); + const coordsParsed = [command]; + if (command.toLowerCase() === 'a') { + // arcs have special flags that apparently don't require spaces so handle special + for (let args; (args = regArcArgumentSequence.exec(coordsStr));) { + for (let j = 1; j < args.length; j++) { + coords.push(args[j]); + } + } } - } - else { - while ((match = re.exec(coordsStr))) { - coords.push(match[0]); + else { + let match; + while ((match = re.exec(coordsStr))) { + coords.push(match[0]); + } } - } - - for (var j = 0, jlen = coords.length; j < jlen; j++) { - parsed = parseFloat(coords[j]); - if (!isNaN(parsed)) { - coordsParsed.push(parsed); + for (let j = 0, jlen = coords.length; j < jlen; j++) { + const parsed = parseFloat(coords[j]); + if (!isNaN(parsed)) { + coordsParsed.push(parsed); + } } - } - - var commandLength = commandLengths[command.toLowerCase()], - repeatedCommand = repeatedCommands[command] || command; - - if (coordsParsed.length - 1 > commandLength) { - for (var k = 1, klen = coordsParsed.length; k < klen; k += commandLength) { - result.push([command].concat(coordsParsed.slice(k, k + commandLength))); - command = repeatedCommand; + const commandLength = commandLengths[command.toLowerCase()], repeatedCommand = repeatedCommands[command] || command; + if (coordsParsed.length - 1 > commandLength) { + for (let k = 1, klen = coordsParsed.length; k < klen; k += commandLength) { + result.push([command].concat(coordsParsed.slice(k, k + commandLength))); + command = repeatedCommand; + } + } + else { + result.push(coordsParsed); } - } - else { - result.push(coordsParsed); - } } - return result; - }; - - /** - * - * Converts points to a smooth SVG path - * @param {{ x: number,y: number }[]} points Array of points - * @param {number} [correction] Apply a correction to the path (usually we use `width / 1000`). If value is undefined 0 is used as the correction value. - * @return {(string|number)[][]} An array of SVG path commands - */ - function getSmoothPathFromPoints(points, correction) { - var path = [], i, - p1 = new fabric.Point(points[0].x, points[0].y), - p2 = new fabric.Point(points[1].x, points[1].y), - len = points.length, multSignX = 1, multSignY = 0, manyPoints = len > 2; - correction = correction || 0; - +}; +/** + * + * Converts points to a smooth SVG path + * @param {{ x: number,y: number }[]} points Array of points + * @param {number} [correction] Apply a correction to the path (usually we use `width / 1000`). If value is undefined 0 is used as the correction value. + * @return {(string|number)[][]} An array of SVG path commands + */ +const getSmoothPathFromPoints = (points, correction = 0) => { + let p1 = new Point(points[0]), p2 = new Point(points[1]), multSignX = 1, multSignY = 0; + const path = [], len = points.length, manyPoints = len > 2; if (manyPoints) { - multSignX = points[2].x < p2.x ? -1 : points[2].x === p2.x ? 0 : 1; - multSignY = points[2].y < p2.y ? -1 : points[2].y === p2.y ? 0 : 1; - } - path.push(['M', p1.x - multSignX * correction, p1.y - multSignY * correction]); + multSignX = points[2].x < p2.x ? -1 : points[2].x === p2.x ? 0 : 1; + multSignY = points[2].y < p2.y ? -1 : points[2].y === p2.y ? 0 : 1; + } + path.push([ + 'M', + p1.x - multSignX * correction, + p1.y - multSignY * correction, + ]); + let i; for (i = 1; i < len; i++) { - if (!p1.eq(p2)) { - var midPoint = p1.midPointFrom(p2); - // p1 is our bezier control point - // midpoint is our endpoint - // start point is p(i-1) value. - path.push(['Q', p1.x, p1.y, midPoint.x, midPoint.y]); - } - p1 = points[i]; - if ((i + 1) < points.length) { - p2 = points[i + 1]; - } + if (!p1.eq(p2)) { + const midPoint = p1.midPointFrom(p2); + // p1 is our bezier control point + // midpoint is our endpoint + // start point is p(i-1) value. + path.push(['Q', p1.x, p1.y, midPoint.x, midPoint.y]); + } + p1 = points[i]; + if (i + 1 < points.length) { + p2 = points[i + 1]; + } } if (manyPoints) { - multSignX = p1.x > points[i - 2].x ? 1 : p1.x === points[i - 2].x ? 0 : -1; - multSignY = p1.y > points[i - 2].y ? 1 : p1.y === points[i - 2].y ? 0 : -1; - } - path.push(['L', p1.x + multSignX * correction, p1.y + multSignY * correction]); + multSignX = p1.x > points[i - 2].x ? 1 : p1.x === points[i - 2].x ? 0 : -1; + multSignY = p1.y > points[i - 2].y ? 1 : p1.y === points[i - 2].y ? 0 : -1; + } + path.push([ + 'L', + p1.x + multSignX * correction, + p1.y + multSignY * correction, + ]); return path; - } - /** - * Transform a path by transforming each segment. - * it has to be a simplified path or it won't work. - * WARNING: this depends from pathOffset for correct operation - * @param {Array} path fabricJS parsed and simplified path commands - * @param {Array} transform matrix that represent the transformation - * @param {Object} [pathOffset] the fabric.Path pathOffset - * @param {Number} pathOffset.x - * @param {Number} pathOffset.y - * @returns {Array} the transformed path - */ - function transformPath(path, transform, pathOffset) { +}; +/** + * Transform a path by transforming each segment. + * it has to be a simplified path or it won't work. + * WARNING: this depends from pathOffset for correct operation + * @param {Array} path fabricJS parsed and simplified path commands + * @param {Array} transform matrix that represent the transformation + * @param {Object} [pathOffset] the fabric.Path pathOffset + * @param {Number} pathOffset.x + * @param {Number} pathOffset.y + * @returns {Array} the transformed path + */ +const transformPath = (path, transform, pathOffset) => { if (pathOffset) { - transform = fabric.util.multiplyTransformMatrices( - transform, - [1, 0, 0, 1, -pathOffset.x, -pathOffset.y] - ); - } - return path.map(function(pathSegment) { - var newSegment = pathSegment.slice(0), point = {}; - for (var i = 1; i < pathSegment.length - 1; i += 2) { - point.x = pathSegment[i]; - point.y = pathSegment[i + 1]; - point = fabric.util.transformPoint(point, transform); - newSegment[i] = point.x; - newSegment[i + 1] = point.y; - } - return newSegment; + transform = multiplyTransformMatrices(transform, [ + 1, + 0, + 0, + 1, + -pathOffset.x, + -pathOffset.y, + ]); + } + return path.map((pathSegment) => { + const newSegment = pathSegment.slice(0); + for (let i = 1; i < pathSegment.length - 1; i += 2) { + const { x, y } = transformPoint({ + x: pathSegment[i], + y: pathSegment[i + 1], + }, transform); + newSegment[i] = x; + newSegment[i + 1] = y; + } + return newSegment; }); - } - - /** - * Join path commands to go back to svg format - * @param {Array} pathData fabricJS parsed path commands - * @return {String} joined path 'M 0 0 L 20 30' - */ - fabric.util.joinPath = function(pathData) { - return pathData.map(function (segment) { return segment.join(' '); }).join(' '); - }; - fabric.util.parsePath = parsePath; - fabric.util.makePathSimpler = makePathSimpler; - fabric.util.getSmoothPathFromPoints = getSmoothPathFromPoints; - fabric.util.getPathSegmentsInfo = getPathSegmentsInfo; - fabric.util.getBoundsOfCurve = getBoundsOfCurve; - fabric.util.getPointOnPath = getPointOnPath; - fabric.util.transformPath = transformPath; -})(); - - -(function() { - - var slice = Array.prototype.slice; +}; +/** + * Returns an array of path commands to create a regular polygon + * @param {number} radius + * @param {number} numVertexes + * @returns {(string|number)[][]} An array of SVG path commands + */ +const getRegularPolygonPath = (numVertexes, radius) => { + const interiorAngle = (Math.PI * 2) / numVertexes; + // rotationAdjustment rotates the path by 1/2 the interior angle so that the polygon always has a flat side on the bottom + // This isn't strictly necessary, but it's how we tend to think of and expect polygons to be drawn + let rotationAdjustment = -halfPI; + if (numVertexes % 2 === 0) { + rotationAdjustment += interiorAngle / 2; + } + const d = new Array(numVertexes + 1); + for (let i = 0; i < numVertexes; i++) { + const rad = i * interiorAngle + rotationAdjustment; + const { x, y } = new Point(cos(rad), sin(rad)).scalarMultiply(radius); + d[i] = [i === 0 ? 'M' : 'L', x, y]; + } + d[numVertexes] = ['Z']; + return d; +}; +/** + * Join path commands to go back to svg format + * @param {Array} pathData fabricJS parsed path commands + * @return {String} joined path 'M 0 0 L 20 30' + */ +const joinPath = (pathData) => pathData.map((segment) => segment.join(' ')).join(' '); - /** - * Invokes method on all items in a given array - * @memberOf fabric.util.array - * @param {Array} array Array to iterate over - * @param {String} method Name of a method to invoke - * @return {Array} - */ - function invoke(array, method) { - var args = slice.call(arguments, 2), result = []; - for (var i = 0, len = array.length; i < len; i++) { - result[i] = args.length ? array[i][method].apply(array[i], args) : array[i][method].call(array[i]); +//@ts-nocheck +// TODO this file needs to go away, cross browser style support is not fabricjs domain. +/** + * wrapper for setting element's style + * @memberOf fabric.util + * @param {HTMLElement} element + * @param {Object | string} styles + */ +function setStyle(element, styles) { + const elementStyle = element.style; + if (!elementStyle) { + return; } - return result; - } - - /** - * Finds maximum value in array (not necessarily "first" one) - * @memberOf fabric.util.array - * @param {Array} array Array to iterate over - * @param {String} byProperty - * @return {*} - */ - function max(array, byProperty) { - return find(array, byProperty, function(value1, value2) { - return value1 >= value2; - }); - } - - /** - * Finds minimum value in array (not necessarily "first" one) - * @memberOf fabric.util.array - * @param {Array} array Array to iterate over - * @param {String} byProperty - * @return {*} - */ - function min(array, byProperty) { - return find(array, byProperty, function(value1, value2) { - return value1 < value2; - }); - } - - /** - * @private - */ - function fill(array, value) { - var k = array.length; - while (k--) { - array[k] = value; + else if (typeof styles === 'string') { + element.style.cssText += ';' + styles; } - return array; - } - - /** - * @private - */ - function find(array, byProperty, condition) { - if (!array || array.length === 0) { - return; + else { + Object.entries(styles).forEach(([property, value]) => elementStyle.setProperty(property, value)); } +} - var i = array.length - 1, - result = byProperty ? array[i][byProperty] : array[i]; - if (byProperty) { - while (i--) { - if (condition(array[i][byProperty], result)) { - result = array[i][byProperty]; - } - } +//@ts-nocheck +/** + * Cross-browser abstraction for sending XMLHttpRequest + * @memberOf fabric.util + * @deprecated this has to go away, we can use a modern browser method to do the same. + * @param {String} url URL to send XMLHttpRequest to + * @param {Object} [options] Options object + * @param {String} [options.method="GET"] + * @param {Record} [options.parameters] parameters to append to url in GET or in body + * @param {String} [options.body] body to send with POST or PUT request + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @param {Function} options.onComplete Callback to invoke when request is completed + * @return {XMLHttpRequest} request + */ +function request(url, options = {}) { + const method = options.method ? options.method.toUpperCase() : 'GET', onComplete = options.onComplete || noop, xhr = new fabric.window.XMLHttpRequest(), body = options.body || options.parameters, signal = options.signal, abort = function () { + xhr.abort(); + }, removeListener = function () { + signal && signal.removeEventListener('abort', abort); + xhr.onerror = xhr.ontimeout = noop; + }; + if (signal && signal.aborted) { + throw new Error('`options.signal` is in `aborted` state'); } - else { - while (i--) { - if (condition(array[i], result)) { - result = array[i]; + else if (signal) { + signal.addEventListener('abort', abort, { once: true }); + } + /** @ignore */ + xhr.onreadystatechange = function () { + if (xhr.readyState === 4) { + removeListener(); + onComplete(xhr); + xhr.onreadystatechange = noop; } - } + }; + xhr.onerror = xhr.ontimeout = removeListener; + if (method === 'GET' && options.parameters) { + const { origin, pathname, searchParams } = new URL(url); + url = `${origin}${pathname}?${new URLSearchParams([ + ...Array.from(searchParams.entries()), + ...Object.entries(options.parameters), + ])}`; } - return result; - } - - /** - * @namespace fabric.util.array - */ - fabric.util.array = { - fill: fill, - invoke: invoke, - min: min, - max: max - }; - -})(); - + xhr.open(method, url, true); + if (method === 'POST' || method === 'PUT') { + xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); + } + xhr.send(method === 'GET' ? null : body); + return xhr; +} -(function() { - /** - * Copies all enumerable properties of one js object to another - * this does not and cannot compete with generic utils. - * Does not clone or extend fabric.Object subclasses. - * This is mostly for internal use and has extra handling for fabricJS objects - * it skips the canvas and group properties in deep cloning. - * @memberOf fabric.util.object - * @param {Object} destination Where to copy to - * @param {Object} source Where to copy from - * @param {Boolean} [deep] Whether to extend nested objects - * @return {Object} - */ +//@ts-nocheck +const touchEvents = ['touchstart', 'touchmove', 'touchend']; +/** + * Adds an event listener to an element + * @function + * @deprecated + * @memberOf fabric.util + * @param {HTMLElement} element + * @param {String} eventName + * @param {Function} handler + */ +const addListener = (element, eventName, handler, options) => element && element.addEventListener(eventName, handler, options); +/** + * Removes an event listener from an element + * @function + * @deprecated + * @memberOf fabric.util + * @param {HTMLElement} element + * @param {String} eventName + * @param {Function} handler + */ +const removeListener = (element, eventName, handler, options) => element && element.removeEventListener(eventName, handler, options); +function getTouchInfo(event) { + const touchProp = event.changedTouches; + if (touchProp && touchProp[0]) { + return touchProp[0]; + } + return event; +} +const getPointer = (event) => { + const element = event.target, scroll = fabric.util.getScrollLeftTop(element), _evt = getTouchInfo(event); + return new Point(_evt.clientX + scroll.left, _evt.clientY + scroll.top); +}; +const isTouchEvent = (event) => touchEvents.indexOf(event.type) > -1 || event.pointerType === 'touch'; - function extend(destination, source, deep) { - // JScript DontEnum bug is not taken care of - // the deep clone is for internal use, is not meant to avoid - // javascript traps or cloning html element or self referenced objects. - if (deep) { - if (!fabric.isLikelyNode && source instanceof Element) { - // avoid cloning deep images, canvases, - destination = source; - } - else if (source instanceof Array) { - destination = []; - for (var i = 0, len = source.length; i < len; i++) { - destination[i] = extend({ }, source[i], deep); +//@ts-nocheck +/** + * Wraps element with another element + * @memberOf fabric.util + * @param {HTMLElement} element Element to wrap + * @param {HTMLElement|String} wrapper Element to wrap with + * @param {Object} [attributes] Attributes to set on a wrapper + * @return {HTMLElement} wrapper + */ +function wrapElement(element, wrapper) { + if (element.parentNode) { + element.parentNode.replaceChild(wrapper, element); + } + wrapper.appendChild(element); + return wrapper; +} +/** + * Returns element scroll offsets + * @memberOf fabric.util + * @param {HTMLElement} element Element to operate on + * @return {Object} Object with left/top values + */ +function getScrollLeftTop(element) { + let left = 0, top = 0; + const docElement = fabric$1.document.documentElement, body = fabric$1.document.body || { + scrollLeft: 0, + scrollTop: 0, + }; + // While loop checks (and then sets element to) .parentNode OR .host + // to account for ShadowDOM. We still want to traverse up out of ShadowDOM, + // but the .parentNode of a root ShadowDOM node will always be null, instead + // it should be accessed through .host. See http://stackoverflow.com/a/24765528/4383938 + while (element && (element.parentNode || element.host)) { + // Set element to element parent, or 'host' in case of ShadowDOM + element = element.parentNode || element.host; + if (element === fabric$1.document) { + left = body.scrollLeft || docElement.scrollLeft || 0; + top = body.scrollTop || docElement.scrollTop || 0; + } + else { + left += element.scrollLeft || 0; + top += element.scrollTop || 0; } - } - else if (source && typeof source === 'object') { - for (var property in source) { - if (property === 'canvas' || property === 'group') { - // we do not want to clone this props at all. - // we want to keep the keys in the copy - destination[property] = null; - } - else if (source.hasOwnProperty(property)) { - destination[property] = extend({ }, source[property], deep); - } + if (element.nodeType === 1 && element.style.position === 'fixed') { + break; } - } - else { - // this sounds odd for an extend but is ok for recursive use - destination = source; - } } - else { - for (var property in source) { - destination[property] = source[property]; - } + return { left, top }; +} +/** + * Returns offset for a given element + * @function + * @memberOf fabric.util + * @param {HTMLElement} element Element to get offset for + * @return {Object} Object with "left" and "top" properties + */ +function getElementOffset(element) { + let box = { left: 0, top: 0 }; + const doc = element && element.ownerDocument, offset = { left: 0, top: 0 }, offsetAttributes = { + borderLeftWidth: 'left', + borderTopWidth: 'top', + paddingLeft: 'left', + paddingTop: 'top', + }; + if (!doc) { + return offset; } - return destination; - } - - /** - * Creates an empty object and copies all enumerable properties of another object to it - * This method is mostly for internal use, and not intended for duplicating shapes in canvas. - * @memberOf fabric.util.object - * @param {Object} object Object to clone - * @param {Boolean} [deep] Whether to clone nested objects - * @return {Object} - */ - - //TODO: this function return an empty object if you try to clone null - function clone(object, deep) { - return extend({ }, object, deep); - } - - /** @namespace fabric.util.object */ - fabric.util.object = { - extend: extend, - clone: clone - }; - fabric.util.object.extend(fabric.util, fabric.Observable); -})(); - - -(function() { - - /** - * Camelizes a string - * @memberOf fabric.util.string - * @param {String} string String to camelize - * @return {String} Camelized version of a string - */ - function camelize(string) { - return string.replace(/-+(.)?/g, function(match, character) { - return character ? character.toUpperCase() : ''; - }); - } - - /** - * Capitalizes a string - * @memberOf fabric.util.string - * @param {String} string String to capitalize - * @param {Boolean} [firstLetterOnly] If true only first letter is capitalized - * and other letters stay untouched, if false first letter is capitalized - * and other letters are converted to lowercase. - * @return {String} Capitalized version of a string - */ - function capitalize(string, firstLetterOnly) { - return string.charAt(0).toUpperCase() + - (firstLetterOnly ? string.slice(1) : string.slice(1).toLowerCase()); - } - - /** - * Escapes XML in a string - * @memberOf fabric.util.string - * @param {String} string String to escape - * @return {String} Escaped version of a string - */ - function escapeXml(string) { - return string.replace(/&/g, '&') - .replace(/"/g, '"') - .replace(/'/g, ''') - .replace(//g, '>'); - } - - /** - * Divide a string in the user perceived single units - * @memberOf fabric.util.string - * @param {String} textstring String to escape - * @return {Array} array containing the graphemes - */ - function graphemeSplit(textstring) { - var i = 0, chr, graphemes = []; - for (i = 0, chr; i < textstring.length; i++) { - if ((chr = getWholeChar(textstring, i)) === false) { - continue; - } - graphemes.push(chr); + const elemStyle = fabric$1.document.defaultView.getComputedStyle(element, null); + for (const attr in offsetAttributes) { + offset[offsetAttributes[attr]] += parseInt(elemStyle[attr], 10) || 0; } - return graphemes; - } - - // taken from mdn in the charAt doc page. - function getWholeChar(str, i) { - var code = str.charCodeAt(i); - - if (isNaN(code)) { - return ''; // Position not found + const docElem = doc.documentElement; + if (typeof element.getBoundingClientRect !== 'undefined') { + box = element.getBoundingClientRect(); } - if (code < 0xD800 || code > 0xDFFF) { - return str.charAt(i); + const scrollLeftTop = getScrollLeftTop(element); + return { + left: box.left + scrollLeftTop.left - (docElem.clientLeft || 0) + offset.left, + top: box.top + scrollLeftTop.top - (docElem.clientTop || 0) + offset.top, + }; +} +/** + * Makes element unselectable + * @memberOf fabric.util + * @param {HTMLElement} element Element to make unselectable + * @return {HTMLElement} Element that was passed in + */ +function makeElementUnselectable(element) { + if (typeof element.onselectstart !== 'undefined') { + element.onselectstart = () => false; } - - // High surrogate (could change last hex to 0xDB7F to treat high private - // surrogates as single characters) - if (0xD800 <= code && code <= 0xDBFF) { - if (str.length <= (i + 1)) { - throw 'High surrogate without following low surrogate'; - } - var next = str.charCodeAt(i + 1); - if (0xDC00 > next || next > 0xDFFF) { - throw 'High surrogate without following low surrogate'; - } - return str.charAt(i) + str.charAt(i + 1); + element.style.userSelect = 'none'; + return element; +} +/** + * Makes element selectable + * @memberOf fabric.util + * @param {HTMLElement} element Element to make selectable + * @return {HTMLElement} Element that was passed in + */ +function makeElementSelectable(element) { + if (typeof element.onselectstart !== 'undefined') { + element.onselectstart = null; } - // Low surrogate (0xDC00 <= code && code <= 0xDFFF) - if (i === 0) { - throw 'Low surrogate without preceding high surrogate'; + element.style.userSelect = ''; + return element; +} +function getNodeCanvas(element) { + const impl = fabric$1.jsdomImplForWrapper(element); + return impl._canvas || impl._image; +} +function cleanUpJsdomNode(element) { + if (!fabric$1.isLikelyNode) { + return; } - var prev = str.charCodeAt(i - 1); - - // (could change last hex to 0xDB7F to treat high private - // surrogates as single characters) - if (0xD800 > prev || prev > 0xDBFF) { - throw 'Low surrogate without preceding high surrogate'; + const impl = fabric$1.jsdomImplForWrapper(element); + if (impl) { + impl._image = null; + impl._canvas = null; + // unsure if necessary + impl._currentSrc = null; + impl._attributes = null; + impl._classList = null; } - // We can pass over low surrogates now as the second component - // in a pair which we have already processed - return false; - } - - - /** - * String utilities - * @namespace fabric.util.string - */ - fabric.util.string = { - camelize: camelize, - capitalize: capitalize, - escapeXml: escapeXml, - graphemeSplit: graphemeSplit - }; -})(); - - -(function() { - - var slice = Array.prototype.slice, emptyFunction = function() { }, +} - IS_DONTENUM_BUGGY = (function() { - for (var p in { toString: 1 }) { - if (p === 'toString') { - return false; - } +/** + * Returns true if context has transparent pixel + * at specified location (taking tolerance into account) + * @param {CanvasRenderingContext2D} ctx context + * @param {Number} x x coordinate in canvasElementCoordinate, not fabric space + * @param {Number} y y coordinate in canvasElementCoordinate, not fabric space + * @param {Number} tolerance Tolerance pixels around the point, not alpha tolerance + * @return {boolean} true if transparent + */ +const isTransparent = (ctx, x, y, tolerance) => { + // If tolerance is > 0 adjust start coords to take into account. + // If moves off Canvas fix to 0 + if (tolerance > 0) { + if (x > tolerance) { + x -= tolerance; } - return true; - })(), - - /** @ignore */ - addMethods = function(klass, source, parent) { - for (var property in source) { - - if (property in klass.prototype && - typeof klass.prototype[property] === 'function' && - (source[property] + '').indexOf('callSuper') > -1) { - - klass.prototype[property] = (function(property) { - return function() { - - var superclass = this.constructor.superclass; - this.constructor.superclass = parent; - var returnValue = source[property].apply(this, arguments); - this.constructor.superclass = superclass; - - if (property !== 'initialize') { - return returnValue; - } - }; - })(property); - } - else { - klass.prototype[property] = source[property]; - } - - if (IS_DONTENUM_BUGGY) { - if (source.toString !== Object.prototype.toString) { - klass.prototype.toString = source.toString; - } - if (source.valueOf !== Object.prototype.valueOf) { - klass.prototype.valueOf = source.valueOf; - } - } + else { + x = 0; + } + if (y > tolerance) { + y -= tolerance; + } + else { + y = 0; + } + } + let _isTransparent = true; + const { data } = ctx.getImageData(x, y, tolerance * 2 || 1, tolerance * 2 || 1); + const l = data.length; + // Split image data - for tolerance > 1, pixelDataSize = 4; + for (let i = 3; i < l; i += 4) { + const alphaChannel = data[i]; + if (alphaChannel > 0) { + // Stop if colour found + _isTransparent = false; + break; } - }; - - function Subclass() { } - - function callSuper(methodName) { - var parentMethod = null, - _this = this; - - // climb prototype chain to find method not equal to callee's method - while (_this.constructor.superclass) { - var superClassMethod = _this.constructor.superclass.prototype[methodName]; - if (_this[methodName] !== superClassMethod) { - parentMethod = superClassMethod; - break; - } - // eslint-disable-next-line - _this = _this.constructor.superclass.prototype; - } - - if (!parentMethod) { - return console.log('tried to callSuper ' + methodName + ', method not found in prototype chain', this); } + return _isTransparent; +}; - return (arguments.length > 1) - ? parentMethod.apply(this, slice.call(arguments, 1)) - : parentMethod.call(this); - } - - /** - * Helper for creation of "classes". - * @memberOf fabric.util - * @param {Function} [parent] optional "Class" to inherit from - * @param {Object} [properties] Properties shared by all instances of this class - * (be careful modifying objects defined here as this would affect all instances) - */ - function createClass() { - var parent = null, - properties = slice.call(arguments, 0); - - if (typeof properties[0] === 'function') { - parent = properties.shift(); +/** + * Merges 2 clip paths into one visually equal clip path + * + * **IMPORTANT**:\ + * Does **NOT** clone the arguments, clone them proir if necessary. + * + * Creates a wrapper (group) that contains one clip path and is clipped by the other so content is kept where both overlap. + * Use this method if both the clip paths may have nested clip paths of their own, so assigning one to the other's clip path property is not possible. + * + * In order to handle the `inverted` property we follow logic described in the following cases:\ + * **(1)** both clip paths are inverted - the clip paths pass the inverted prop to the wrapper and loose it themselves.\ + * **(2)** one is inverted and the other isn't - the wrapper shouldn't become inverted and the inverted clip path must clip the non inverted one to produce an identical visual effect.\ + * **(3)** both clip paths are not inverted - wrapper and clip paths remain unchanged. + * + * @memberOf fabric.util + * @param {fabric.Object} c1 + * @param {fabric.Object} c2 + * @returns {fabric.Object} merged clip path + */ +const mergeClipPaths = (c1, c2) => { + var _a; + let a = c1, b = c2; + if (a.inverted && !b.inverted) { + // case (2) + a = c2; + b = c1; } - function klass() { - this.initialize.apply(this, arguments); + // `b` becomes `a`'s clip path so we transform `b` to `a` coordinate plane + sendObjectToPlane(b, (_a = b.group) === null || _a === void 0 ? void 0 : _a.calcTransformMatrix(), a.calcTransformMatrix()); + // assign the `inverted` prop to the wrapping group + const inverted = a.inverted && b.inverted; + if (inverted) { + // case (1) + a.inverted = b.inverted = false; } + return new fabric$1.Group([a], { clipPath: b, inverted }); +}; - klass.superclass = parent; - klass.subclasses = []; - - if (parent) { - Subclass.prototype = parent.prototype; - klass.prototype = new Subclass(); - parent.subclasses.push(klass); - } - for (var i = 0, length = properties.length; i < length; i++) { - addMethods(klass, properties[i], parent); +/** + * Easing functions + * See Easing Equations by Robert Penner + * @namespace fabric.util.ease + */ +const normalize = (a, c, p, s) => { + if (a < Math.abs(c)) { + a = c; + s = p / 4; } - if (!klass.prototype.initialize) { - klass.prototype.initialize = emptyFunction; + else { + //handle the 0/0 case: + if (c === 0 && a === 0) { + s = (p / twoMathPi) * Math.asin(1); + } + else { + s = (p / twoMathPi) * Math.asin(c / a); + } } - klass.prototype.constructor = klass; - klass.prototype.callSuper = callSuper; - return klass; - } - - fabric.util.createClass = createClass; -})(); - - -(function () { - // since ie11 can use addEventListener but they do not support options, i need to check - var couldUseAttachEvent = !!fabric.document.createElement('div').attachEvent, - touchEvents = ['touchstart', 'touchmove', 'touchend']; - /** - * Adds an event listener to an element - * @function - * @memberOf fabric.util - * @param {HTMLElement} element - * @param {String} eventName - * @param {Function} handler - */ - fabric.util.addListener = function(element, eventName, handler, options) { - element && element.addEventListener(eventName, handler, couldUseAttachEvent ? false : options); - }; - - /** - * Removes an event listener from an element - * @function - * @memberOf fabric.util - * @param {HTMLElement} element - * @param {String} eventName - * @param {Function} handler - */ - fabric.util.removeListener = function(element, eventName, handler, options) { - element && element.removeEventListener(eventName, handler, couldUseAttachEvent ? false : options); - }; - - function getTouchInfo(event) { - var touchProp = event.changedTouches; - if (touchProp && touchProp[0]) { - return touchProp[0]; + return { a, c, p, s }; +}; +const elastic = (a, s, p, t, d) => a * Math.pow(2, 10 * (t -= 1)) * Math.sin(((t * d - s) * twoMathPi) / p); +/** + * Cubic easing out + * @memberOf fabric.util.ease + */ +const easeOutCubic = (t, b, c, d) => c * ((t /= d - 1) * t ** 2 + 1) + b; +/** + * Cubic easing in and out + * @memberOf fabric.util.ease + */ +const easeInOutCubic = (t, b, c, d) => { + t /= d / 2; + if (t < 1) { + return (c / 2) * t ** 3 + b; } - return event; - } - - fabric.util.getPointer = function(event) { - var element = event.target, - scroll = fabric.util.getScrollLeftTop(element), - _evt = getTouchInfo(event); - return { - x: _evt.clientX + scroll.left, - y: _evt.clientY + scroll.top - }; - }; - - fabric.util.isTouchEvent = function(event) { - return touchEvents.indexOf(event.type) > -1 || event.pointerType === 'touch'; - }; -})(); - - -(function () { - - /** - * Cross-browser wrapper for setting element's style - * @memberOf fabric.util - * @param {HTMLElement} element - * @param {Object} styles - * @return {HTMLElement} Element that was passed as a first argument - */ - function setStyle(element, styles) { - var elementStyle = element.style; - if (!elementStyle) { - return element; - } - if (typeof styles === 'string') { - element.style.cssText += ';' + styles; - return styles.indexOf('opacity') > -1 - ? setOpacity(element, styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) - : element; - } - for (var property in styles) { - if (property === 'opacity') { - setOpacity(element, styles[property]); - } - else { - var normalizedProperty = (property === 'float' || property === 'cssFloat') - ? (typeof elementStyle.styleFloat === 'undefined' ? 'cssFloat' : 'styleFloat') - : property; - elementStyle[normalizedProperty] = styles[property]; - } + return (c / 2) * ((t -= 2) * t ** 2 + 2) + b; +}; +/** + * Quartic easing in + * @memberOf fabric.util.ease + */ +const easeInQuart = (t, b, c, d) => c * (t /= d) * t ** 3 + b; +/** + * Quartic easing out + * @memberOf fabric.util.ease + */ +const easeOutQuart = (t, b, c, d) => -c * ((t = t / d - 1) * t ** 3 - 1) + b; +/** + * Quartic easing in and out + * @memberOf fabric.util.ease + */ +const easeInOutQuart = (t, b, c, d) => { + t /= d / 2; + if (t < 1) { + return (c / 2) * t ** 4 + b; } - return element; - } - - var parseEl = fabric.document.createElement('div'), - supportsOpacity = typeof parseEl.style.opacity === 'string', - supportsFilters = typeof parseEl.style.filter === 'string', - reOpacity = /alpha\s*\(\s*opacity\s*=\s*([^\)]+)\)/, - - /** @ignore */ - setOpacity = function (element) { return element; }; - - if (supportsOpacity) { - /** @ignore */ - setOpacity = function(element, value) { - element.style.opacity = value; - return element; - }; - } - else if (supportsFilters) { - /** @ignore */ - setOpacity = function(element, value) { - var es = element.style; - if (element.currentStyle && !element.currentStyle.hasLayout) { - es.zoom = 1; - } - if (reOpacity.test(es.filter)) { - value = value >= 0.9999 ? '' : ('alpha(opacity=' + (value * 100) + ')'); - es.filter = es.filter.replace(reOpacity, value); - } - else { - es.filter += ' alpha(opacity=' + (value * 100) + ')'; - } - return element; - }; - } - - fabric.util.setStyle = setStyle; - -})(); - - -(function() { - - var _slice = Array.prototype.slice; - - /** - * Takes id and returns an element with that id (if one exists in a document) - * @memberOf fabric.util - * @param {String|HTMLElement} id - * @return {HTMLElement|null} - */ - function getById(id) { - return typeof id === 'string' ? fabric.document.getElementById(id) : id; - } - - var sliceCanConvertNodelists, - /** - * Converts an array-like object (e.g. arguments or NodeList) to an array - * @memberOf fabric.util - * @param {Object} arrayLike - * @return {Array} - */ - toArray = function(arrayLike) { - return _slice.call(arrayLike, 0); - }; - - try { - sliceCanConvertNodelists = toArray(fabric.document.childNodes) instanceof Array; - } - catch (err) { } - - if (!sliceCanConvertNodelists) { - toArray = function(arrayLike) { - var arr = new Array(arrayLike.length), i = arrayLike.length; - while (i--) { - arr[i] = arrayLike[i]; - } - return arr; - }; - } - - /** - * Creates specified element with specified attributes - * @memberOf fabric.util - * @param {String} tagName Type of an element to create - * @param {Object} [attributes] Attributes to set on an element - * @return {HTMLElement} Newly created element - */ - function makeElement(tagName, attributes) { - var el = fabric.document.createElement(tagName); - for (var prop in attributes) { - if (prop === 'class') { - el.className = attributes[prop]; - } - else if (prop === 'for') { - el.htmlFor = attributes[prop]; - } - else { - el.setAttribute(prop, attributes[prop]); - } - } - return el; - } - - /** - * Adds class to an element - * @memberOf fabric.util - * @param {HTMLElement} element Element to add class to - * @param {String} className Class to add to an element - */ - function addClass(element, className) { - if (element && (' ' + element.className + ' ').indexOf(' ' + className + ' ') === -1) { - element.className += (element.className ? ' ' : '') + className; - } - } - - /** - * Wraps element with another element - * @memberOf fabric.util - * @param {HTMLElement} element Element to wrap - * @param {HTMLElement|String} wrapper Element to wrap with - * @param {Object} [attributes] Attributes to set on a wrapper - * @return {HTMLElement} wrapper - */ - function wrapElement(element, wrapper, attributes) { - if (typeof wrapper === 'string') { - wrapper = makeElement(wrapper, attributes); + return (-c / 2) * ((t -= 2) * t ** 3 - 2) + b; +}; +/** + * Quintic easing in + * @memberOf fabric.util.ease + */ +const easeInQuint = (t, b, c, d) => c * (t /= d) * t ** 4 + b; +/** + * Quintic easing out + * @memberOf fabric.util.ease + */ +const easeOutQuint = (t, b, c, d) => c * ((t /= d - 1) * t ** 4 + 1) + b; +/** + * Quintic easing in and out + * @memberOf fabric.util.ease + */ +const easeInOutQuint = (t, b, c, d) => { + t /= d / 2; + if (t < 1) { + return (c / 2) * t ** 5 + b; } - if (element.parentNode) { - element.parentNode.replaceChild(wrapper, element); + return (c / 2) * ((t -= 2) * t ** 4 + 2) + b; +}; +/** + * Sinusoidal easing in + * @memberOf fabric.util.ease + */ +const easeInSine = (t, b, c, d) => -c * Math.cos((t / d) * halfPI) + c + b; +/** + * Sinusoidal easing out + * @memberOf fabric.util.ease + */ +const easeOutSine = (t, b, c, d) => c * Math.sin((t / d) * halfPI) + b; +/** + * Sinusoidal easing in and out + * @memberOf fabric.util.ease + */ +const easeInOutSine = (t, b, c, d) => (-c / 2) * (Math.cos((Math.PI * t) / d) - 1) + b; +/** + * Exponential easing in + * @memberOf fabric.util.ease + */ +const easeInExpo = (t, b, c, d) => t === 0 ? b : c * 2 ** (10 * (t / d - 1)) + b; +/** + * Exponential easing out + * @memberOf fabric.util.ease + */ +const easeOutExpo = (t, b, c, d) => t === d ? b + c : c * -(2 ** ((-10 * t) / d) + 1) + b; +/** + * Exponential easing in and out + * @memberOf fabric.util.ease + */ +const easeInOutExpo = (t, b, c, d) => { + if (t === 0) { + return b; } - wrapper.appendChild(element); - return wrapper; - } - - /** - * Returns element scroll offsets - * @memberOf fabric.util - * @param {HTMLElement} element Element to operate on - * @return {Object} Object with left/top values - */ - function getScrollLeftTop(element) { - - var left = 0, - top = 0, - docElement = fabric.document.documentElement, - body = fabric.document.body || { - scrollLeft: 0, scrollTop: 0 - }; - - // While loop checks (and then sets element to) .parentNode OR .host - // to account for ShadowDOM. We still want to traverse up out of ShadowDOM, - // but the .parentNode of a root ShadowDOM node will always be null, instead - // it should be accessed through .host. See http://stackoverflow.com/a/24765528/4383938 - while (element && (element.parentNode || element.host)) { - - // Set element to element parent, or 'host' in case of ShadowDOM - element = element.parentNode || element.host; - - if (element === fabric.document) { - left = body.scrollLeft || docElement.scrollLeft || 0; - top = body.scrollTop || docElement.scrollTop || 0; - } - else { - left += element.scrollLeft || 0; - top += element.scrollTop || 0; - } - - if (element.nodeType === 1 && element.style.position === 'fixed') { - break; - } + if (t === d) { + return b + c; } - - return { left: left, top: top }; - } - - /** - * Returns offset for a given element - * @function - * @memberOf fabric.util - * @param {HTMLElement} element Element to get offset for - * @return {Object} Object with "left" and "top" properties - */ - function getElementOffset(element) { - var docElem, - doc = element && element.ownerDocument, - box = { left: 0, top: 0 }, - offset = { left: 0, top: 0 }, - scrollLeftTop, - offsetAttributes = { - borderLeftWidth: 'left', - borderTopWidth: 'top', - paddingLeft: 'left', - paddingTop: 'top' - }; - - if (!doc) { - return offset; + t /= d / 2; + if (t < 1) { + return (c / 2) * 2 ** (10 * (t - 1)) + b; } - - for (var attr in offsetAttributes) { - offset[offsetAttributes[attr]] += parseInt(getElementStyle(element, attr), 10) || 0; + return (c / 2) * -(2 ** (-10 * --t) + 2) + b; +}; +/** + * Circular easing in + * @memberOf fabric.util.ease + */ +const easeInCirc = (t, b, c, d) => -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b; +/** + * Circular easing out + * @memberOf fabric.util.ease + */ +const easeOutCirc = (t, b, c, d) => c * Math.sqrt(1 - (t = t / d - 1) * t) + b; +/** + * Circular easing in and out + * @memberOf fabric.util.ease + */ +const easeInOutCirc = (t, b, c, d) => { + t /= d / 2; + if (t < 1) { + return (-c / 2) * (Math.sqrt(1 - t ** 2) - 1) + b; } - - docElem = doc.documentElement; - if ( typeof element.getBoundingClientRect !== 'undefined' ) { - box = element.getBoundingClientRect(); + return (c / 2) * (Math.sqrt(1 - (t -= 2) * t) + 1) + b; +}; +/** + * Elastic easing in + * @memberOf fabric.util.ease + */ +const easeInElastic = (t, b, c, d) => { + const s = 1.70158, a = c; + let p = 0; + if (t === 0) { + return b; } - - scrollLeftTop = getScrollLeftTop(element); - - return { - left: box.left + scrollLeftTop.left - (docElem.clientLeft || 0) + offset.left, - top: box.top + scrollLeftTop.top - (docElem.clientTop || 0) + offset.top - }; - } - - /** - * Returns style attribute value of a given element - * @memberOf fabric.util - * @param {HTMLElement} element Element to get style attribute for - * @param {String} attr Style attribute to get for element - * @return {String} Style attribute value of the given element. - */ - var getElementStyle; - if (fabric.document.defaultView && fabric.document.defaultView.getComputedStyle) { - getElementStyle = function(element, attr) { - var style = fabric.document.defaultView.getComputedStyle(element, null); - return style ? style[attr] : undefined; - }; - } - else { - getElementStyle = function(element, attr) { - var value = element.style[attr]; - if (!value && element.currentStyle) { - value = element.currentStyle[attr]; - } - return value; - }; - } - - (function () { - var style = fabric.document.documentElement.style, - selectProp = 'userSelect' in style - ? 'userSelect' - : 'MozUserSelect' in style - ? 'MozUserSelect' - : 'WebkitUserSelect' in style - ? 'WebkitUserSelect' - : 'KhtmlUserSelect' in style - ? 'KhtmlUserSelect' - : ''; - - /** - * Makes element unselectable - * @memberOf fabric.util - * @param {HTMLElement} element Element to make unselectable - * @return {HTMLElement} Element that was passed in - */ - function makeElementUnselectable(element) { - if (typeof element.onselectstart !== 'undefined') { - element.onselectstart = fabric.util.falseFunction; - } - if (selectProp) { - element.style[selectProp] = 'none'; - } - else if (typeof element.unselectable === 'string') { - element.unselectable = 'on'; - } - return element; + t /= d; + if (t === 1) { + return b + c; } - - /** - * Makes element selectable - * @memberOf fabric.util - * @param {HTMLElement} element Element to make selectable - * @return {HTMLElement} Element that was passed in - */ - function makeElementSelectable(element) { - if (typeof element.onselectstart !== 'undefined') { - element.onselectstart = null; - } - if (selectProp) { - element.style[selectProp] = ''; - } - else if (typeof element.unselectable === 'string') { - element.unselectable = ''; - } - return element; + if (!p) { + p = d * 0.3; } - - fabric.util.makeElementUnselectable = makeElementUnselectable; - fabric.util.makeElementSelectable = makeElementSelectable; - })(); - - function getNodeCanvas(element) { - var impl = fabric.jsdomImplForWrapper(element); - return impl._canvas || impl._image; - }; - - function cleanUpJsdomNode(element) { - if (!fabric.isLikelyNode) { - return; + const { a: normA, s: normS, p: normP } = normalize(a, c, p, s); + return -elastic(normA, normS, normP, t, d) + b; +}; +/** + * Elastic easing out + * @memberOf fabric.util.ease + */ +const easeOutElastic = (t, b, c, d) => { + const s = 1.70158, a = c; + let p = 0; + if (t === 0) { + return b; } - var impl = fabric.jsdomImplForWrapper(element); - if (impl) { - impl._image = null; - impl._canvas = null; - // unsure if necessary - impl._currentSrc = null; - impl._attributes = null; - impl._classList = null; - } - } - - function setImageSmoothing(ctx, value) { - ctx.imageSmoothingEnabled = ctx.imageSmoothingEnabled || ctx.webkitImageSmoothingEnabled - || ctx.mozImageSmoothingEnabled || ctx.msImageSmoothingEnabled || ctx.oImageSmoothingEnabled; - ctx.imageSmoothingEnabled = value; - } - - /** - * setImageSmoothing sets the context imageSmoothingEnabled property. - * Used by canvas and by ImageObject. - * @memberOf fabric.util - * @since 4.0.0 - * @param {HTMLRenderingContext2D} ctx to set on - * @param {Boolean} value true or false - */ - fabric.util.setImageSmoothing = setImageSmoothing; - fabric.util.getById = getById; - fabric.util.toArray = toArray; - fabric.util.addClass = addClass; - fabric.util.makeElement = makeElement; - fabric.util.wrapElement = wrapElement; - fabric.util.getScrollLeftTop = getScrollLeftTop; - fabric.util.getElementOffset = getElementOffset; - fabric.util.getNodeCanvas = getNodeCanvas; - fabric.util.cleanUpJsdomNode = cleanUpJsdomNode; - -})(); - - -(function() { - - function addParamToUrl(url, param) { - return url + (/\?/.test(url) ? '&' : '?') + param; - } - - function emptyFn() { } - - /** - * Cross-browser abstraction for sending XMLHttpRequest - * @memberOf fabric.util - * @param {String} url URL to send XMLHttpRequest to - * @param {Object} [options] Options object - * @param {String} [options.method="GET"] - * @param {String} [options.parameters] parameters to append to url in GET or in body - * @param {String} [options.body] body to send with POST or PUT request - * @param {Function} options.onComplete Callback to invoke when request is completed - * @return {XMLHttpRequest} request - */ - function request(url, options) { - options || (options = { }); - - var method = options.method ? options.method.toUpperCase() : 'GET', - onComplete = options.onComplete || function() { }, - xhr = new fabric.window.XMLHttpRequest(), - body = options.body || options.parameters; - - /** @ignore */ - xhr.onreadystatechange = function() { - if (xhr.readyState === 4) { - onComplete(xhr); - xhr.onreadystatechange = emptyFn; - } - }; - - if (method === 'GET') { - body = null; - if (typeof options.parameters === 'string') { - url = addParamToUrl(url, options.parameters); - } + t /= d; + if (t === 1) { + return b + c; } - - xhr.open(method, url, true); - - if (method === 'POST' || method === 'PUT') { - xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); + if (!p) { + p = d * 0.3; } - - xhr.send(body); - return xhr; - } - - fabric.util.request = request; -})(); - - + const { a: normA, s: normS, p: normP, c: normC } = normalize(a, c, p, s); + return (normA * 2 ** (-10 * t) * Math.sin(((t * d - normS) * twoMathPi) / normP) + + normC + + b); +}; /** - * Wrapper around `console.log` (when available) - * @param {*} [values] Values to log + * Elastic easing in and out + * @memberOf fabric.util.ease */ -fabric.log = console.log; - +const easeInOutElastic = (t, b, c, d) => { + const s = 1.70158, a = c; + let p = 0; + if (t === 0) { + return b; + } + t /= d / 2; + if (t === 2) { + return b + c; + } + if (!p) { + p = d * (0.3 * 1.5); + } + const { a: normA, s: normS, p: normP, c: normC } = normalize(a, c, p, s); + if (t < 1) { + return -0.5 * elastic(normA, normS, normP, t, d) + b; + } + return (normA * + Math.pow(2, -10 * (t -= 1)) * + Math.sin(((t * d - normS) * twoMathPi) / normP) * + 0.5 + + normC + + b); +}; /** - * Wrapper around `console.warn` (when available) - * @param {*} [values] Values to log as a warning + * Backwards easing in + * @memberOf fabric.util.ease */ -fabric.warn = console.warn; - - -(function () { +const easeInBack = (t, b, c, d, s = 1.70158) => c * (t /= d) * t * ((s + 1) * t - s) + b; +/** + * Backwards easing out + * @memberOf fabric.util.ease + */ +const easeOutBack = (t, b, c, d, s = 1.70158) => c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b; +/** + * Backwards easing in and out + * @memberOf fabric.util.ease + */ +const easeInOutBack = (t, b, c, d, s = 1.70158) => { + t /= d / 2; + if (t < 1) { + return (c / 2) * (t * t * (((s *= 1.525) + 1) * t - s)) + b; + } + return (c / 2) * ((t -= 2) * t * (((s *= 1.525) + 1) * t + s) + 2) + b; +}; +/** + * Bouncing easing out + * @memberOf fabric.util.ease + */ +const easeOutBounce = (t, b, c, d) => { + if ((t /= d) < 1 / 2.75) { + return c * (7.5625 * t * t) + b; + } + else if (t < 2 / 2.75) { + return c * (7.5625 * (t -= 1.5 / 2.75) * t + 0.75) + b; + } + else if (t < 2.5 / 2.75) { + return c * (7.5625 * (t -= 2.25 / 2.75) * t + 0.9375) + b; + } + else { + return c * (7.5625 * (t -= 2.625 / 2.75) * t + 0.984375) + b; + } +}; +/** + * Bouncing easing in + * @memberOf fabric.util.ease + */ +const easeInBounce = (t, b, c, d) => c - easeOutBounce(d - t, 0, c, d) + b; +/** + * Bouncing easing in and out + * @memberOf fabric.util.ease + */ +const easeInOutBounce = (t, b, c, d) => t < d / 2 + ? easeInBounce(t * 2, 0, c, d) * 0.5 + b + : easeOutBounce(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b; +/** + * Quadratic easing in + * @memberOf fabric.util.ease + */ +const easeInQuad = (t, b, c, d) => c * (t /= d) * t + b; +/** + * Quadratic easing out + * @memberOf fabric.util.ease + */ +const easeOutQuad = (t, b, c, d) => -c * (t /= d) * (t - 2) + b; +/** + * Quadratic easing in and out + * @memberOf fabric.util.ease + */ +const easeInOutQuad = (t, b, c, d) => { + t /= d / 2; + if (t < 1) { + return (c / 2) * t ** 2 + b; + } + return (-c / 2) * (--t * (t - 2) - 1) + b; +}; +/** + * Cubic easing in + * @memberOf fabric.util.ease + */ +const easeInCubic = (t, b, c, d) => c * (t /= d) * t * t + b; + +var ease = /*#__PURE__*/Object.freeze({ + __proto__: null, + easeOutCubic: easeOutCubic, + easeInOutCubic: easeInOutCubic, + easeInQuart: easeInQuart, + easeOutQuart: easeOutQuart, + easeInOutQuart: easeInOutQuart, + easeInQuint: easeInQuint, + easeOutQuint: easeOutQuint, + easeInOutQuint: easeInOutQuint, + easeInSine: easeInSine, + easeOutSine: easeOutSine, + easeInOutSine: easeInOutSine, + easeInExpo: easeInExpo, + easeOutExpo: easeOutExpo, + easeInOutExpo: easeInOutExpo, + easeInCirc: easeInCirc, + easeOutCirc: easeOutCirc, + easeInOutCirc: easeInOutCirc, + easeInElastic: easeInElastic, + easeOutElastic: easeOutElastic, + easeInOutElastic: easeInOutElastic, + easeInBack: easeInBack, + easeOutBack: easeOutBack, + easeInOutBack: easeInOutBack, + easeOutBounce: easeOutBounce, + easeInBounce: easeInBounce, + easeInOutBounce: easeInOutBounce, + easeInQuad: easeInQuad, + easeOutQuad: easeOutQuad, + easeInOutQuad: easeInOutQuad, + easeInCubic: easeInCubic +}); - var extend = fabric.util.object.extend, - clone = fabric.util.object.clone; +/** + * Map of the 148 color names with HEX code + * @see: https://www.w3.org/TR/css3-color/#svg-color + */ +const ColorNameMap = { + aliceblue: '#F0F8FF', + antiquewhite: '#FAEBD7', + aqua: '#00FFFF', + aquamarine: '#7FFFD4', + azure: '#F0FFFF', + beige: '#F5F5DC', + bisque: '#FFE4C4', + black: '#000000', + blanchedalmond: '#FFEBCD', + blue: '#0000FF', + blueviolet: '#8A2BE2', + brown: '#A52A2A', + burlywood: '#DEB887', + cadetblue: '#5F9EA0', + chartreuse: '#7FFF00', + chocolate: '#D2691E', + coral: '#FF7F50', + cornflowerblue: '#6495ED', + cornsilk: '#FFF8DC', + crimson: '#DC143C', + cyan: '#00FFFF', + darkblue: '#00008B', + darkcyan: '#008B8B', + darkgoldenrod: '#B8860B', + darkgray: '#A9A9A9', + darkgrey: '#A9A9A9', + darkgreen: '#006400', + darkkhaki: '#BDB76B', + darkmagenta: '#8B008B', + darkolivegreen: '#556B2F', + darkorange: '#FF8C00', + darkorchid: '#9932CC', + darkred: '#8B0000', + darksalmon: '#E9967A', + darkseagreen: '#8FBC8F', + darkslateblue: '#483D8B', + darkslategray: '#2F4F4F', + darkslategrey: '#2F4F4F', + darkturquoise: '#00CED1', + darkviolet: '#9400D3', + deeppink: '#FF1493', + deepskyblue: '#00BFFF', + dimgray: '#696969', + dimgrey: '#696969', + dodgerblue: '#1E90FF', + firebrick: '#B22222', + floralwhite: '#FFFAF0', + forestgreen: '#228B22', + fuchsia: '#FF00FF', + gainsboro: '#DCDCDC', + ghostwhite: '#F8F8FF', + gold: '#FFD700', + goldenrod: '#DAA520', + gray: '#808080', + grey: '#808080', + green: '#008000', + greenyellow: '#ADFF2F', + honeydew: '#F0FFF0', + hotpink: '#FF69B4', + indianred: '#CD5C5C', + indigo: '#4B0082', + ivory: '#FFFFF0', + khaki: '#F0E68C', + lavender: '#E6E6FA', + lavenderblush: '#FFF0F5', + lawngreen: '#7CFC00', + lemonchiffon: '#FFFACD', + lightblue: '#ADD8E6', + lightcoral: '#F08080', + lightcyan: '#E0FFFF', + lightgoldenrodyellow: '#FAFAD2', + lightgray: '#D3D3D3', + lightgrey: '#D3D3D3', + lightgreen: '#90EE90', + lightpink: '#FFB6C1', + lightsalmon: '#FFA07A', + lightseagreen: '#20B2AA', + lightskyblue: '#87CEFA', + lightslategray: '#778899', + lightslategrey: '#778899', + lightsteelblue: '#B0C4DE', + lightyellow: '#FFFFE0', + lime: '#00FF00', + limegreen: '#32CD32', + linen: '#FAF0E6', + magenta: '#FF00FF', + maroon: '#800000', + mediumaquamarine: '#66CDAA', + mediumblue: '#0000CD', + mediumorchid: '#BA55D3', + mediumpurple: '#9370DB', + mediumseagreen: '#3CB371', + mediumslateblue: '#7B68EE', + mediumspringgreen: '#00FA9A', + mediumturquoise: '#48D1CC', + mediumvioletred: '#C71585', + midnightblue: '#191970', + mintcream: '#F5FFFA', + mistyrose: '#FFE4E1', + moccasin: '#FFE4B5', + navajowhite: '#FFDEAD', + navy: '#000080', + oldlace: '#FDF5E6', + olive: '#808000', + olivedrab: '#6B8E23', + orange: '#FFA500', + orangered: '#FF4500', + orchid: '#DA70D6', + palegoldenrod: '#EEE8AA', + palegreen: '#98FB98', + paleturquoise: '#AFEEEE', + palevioletred: '#DB7093', + papayawhip: '#FFEFD5', + peachpuff: '#FFDAB9', + peru: '#CD853F', + pink: '#FFC0CB', + plum: '#DDA0DD', + powderblue: '#B0E0E6', + purple: '#800080', + rebeccapurple: '#663399', + red: '#FF0000', + rosybrown: '#BC8F8F', + royalblue: '#4169E1', + saddlebrown: '#8B4513', + salmon: '#FA8072', + sandybrown: '#F4A460', + seagreen: '#2E8B57', + seashell: '#FFF5EE', + sienna: '#A0522D', + silver: '#C0C0C0', + skyblue: '#87CEEB', + slateblue: '#6A5ACD', + slategray: '#708090', + slategrey: '#708090', + snow: '#FFFAFA', + springgreen: '#00FF7F', + steelblue: '#4682B4', + tan: '#D2B48C', + teal: '#008080', + thistle: '#D8BFD8', + tomato: '#FF6347', + turquoise: '#40E0D0', + violet: '#EE82EE', + wheat: '#F5DEB3', + white: '#FFFFFF', + whitesmoke: '#F5F5F5', + yellow: '#FFFF00', + yellowgreen: '#9ACD32', +}; - /** - * @typedef {Object} AnimationOptions - * Animation of a value or list of values. - * When using lists, think of something like this: - * fabric.util.animate({ - * startValue: [1, 2, 3], - * endValue: [2, 4, 6], - * onChange: function([a, b, c]) { - * canvas.zoomToPoint({x: b, y: c}, a) - * canvas.renderAll() - * } - * }); - * @example - * @property {Function} [onChange] Callback; invoked on every value change - * @property {Function} [onComplete] Callback; invoked when value change is completed - * @example - * // Note: startValue, endValue, and byValue must match the type - * var animationOptions = { startValue: 0, endValue: 1, byValue: 0.25 } - * var animationOptions = { startValue: [0, 1], endValue: [1, 2], byValue: [0.25, 0.25] } - * @property {number | number[]} [startValue=0] Starting value - * @property {number | number[]} [endValue=100] Ending value - * @property {number | number[]} [byValue=100] Value to modify the property by - * @property {Function} [easing] Easing function - * @property {Number} [duration=500] Duration of change (in ms) - * @property {Function} [abort] Additional function with logic. If returns true, animation aborts. - * - * @typedef {() => void} CancelFunction - * - * @typedef {Object} AnimationCurrentState - * @property {number | number[]} currentValue value in range [`startValue`, `endValue`] - * @property {number} completionRate value in range [0, 1] - * @property {number} durationRate value in range [0, 1] - * - * @typedef {(AnimationOptions & AnimationCurrentState & { cancel: CancelFunction }} AnimationContext - */ +/** + * Regex matching color in RGB or RGBA formats (ex: rgb(0, 0, 0), rgba(255, 100, 10, 0.5), rgba( 255 , 100 , 10 , 0.5 ), rgb(1,1,1), rgba(100%, 60%, 10%, 0.5)) + * @static + * @field + * @memberOf Color + */ +// eslint-disable-next-line max-len +const reRGBa = /^rgba?\(\s*(\d{1,3}(?:\.\d+)?%?)\s*,\s*(\d{1,3}(?:\.\d+)?%?)\s*,\s*(\d{1,3}(?:\.\d+)?%?)\s*(?:\s*,\s*((?:\d*\.?\d+)?)\s*)?\)$/i; +/** + * Regex matching color in HSL or HSLA formats (ex: hsl(200, 80%, 10%), hsla(300, 50%, 80%, 0.5), hsla( 300 , 50% , 80% , 0.5 )) + * @static + * @field + * @memberOf Color + */ +const reHSLa = /^hsla?\(\s*(\d{1,3})\s*,\s*(\d{1,3}%)\s*,\s*(\d{1,3}%)\s*(?:\s*,\s*(\d+(?:\.\d+)?)\s*)?\)$/i; +/** + * Regex matching color in HEX format (ex: #FF5544CC, #FF5555, 010155, aff) + * @static + * @field + * @memberOf Color + */ +const reHex = /^#?([0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{4}|[0-9a-f]{3})$/i; - /** - * Array holding all running animations - * @memberof fabric - * @type {AnimationContext[]} - */ - var RUNNING_ANIMATIONS = []; - fabric.util.object.extend(RUNNING_ANIMATIONS, { +/** + * @private + * @param {Number} p + * @param {Number} q + * @param {Number} t + * @return {Number} + */ +function hue2rgb(p, q, t) { + if (t < 0) { + t += 1; + } + if (t > 1) { + t -= 1; + } + if (t < 1 / 6) { + return p + (q - p) * 6 * t; + } + if (t < 1 / 2) { + return q; + } + if (t < 2 / 3) { + return p + (q - p) * (2 / 3 - t) * 6; + } + return p; +} +/** + * Convert a [0, 255] value to hex + * @param value + * @returns + */ +function hexify(value) { + const hexValue = value.toString(16).toUpperCase(); + return hexValue.length === 1 ? `0${hexValue}` : hexValue; +} +//@ts-nocheck +/** + * @class Color common color operations + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#colors colors} + */ +class Color { /** - * cancel all running animations at the next requestAnimFrame - * @returns {AnimationContext[]} + * + * @param {string} [color] optional in hex or rgb(a) or hsl format or from known color list */ - cancelAll: function () { - var animations = this.splice(0); - animations.forEach(function (animation) { - animation.cancel(); - }); - return animations; - }, + constructor(color) { + if (!color) { + this.setSource([0, 0, 0, 1]); + } + else { + this._tryParsingColor(color); + } + } + /** + * @private + * @param {string} [color] Color value to parse + */ + _tryParsingColor(color) { + if (color in ColorNameMap) { + color = ColorNameMap[color]; + } + const source = color === 'transparent' + ? [255, 255, 255, 0] + : Color.sourceFromHex(color) || + Color.sourceFromRgb(color) || + Color.sourceFromHsl(color) || [0, 0, 0, 1]; // color is not recognize let's default to black as canvas does + if (source) { + this.setSource(source); + } + } + /** + * Adapted from {@link https://gist.github.com/mjackson/5311256 https://gist.github.com/mjackson} + * @private + * @param {Number} r Red color value + * @param {Number} g Green color value + * @param {Number} b Blue color value + * @return {TColorSource} Hsl color + */ + _rgbToHsl(r, g, b) { + r /= 255; + g /= 255; + b /= 255; + const maxValue = Math.max(r, g, b), minValue = Math.min(r, g, b); + let h, s; + const l = (maxValue + minValue) / 2; + if (maxValue === minValue) { + h = s = 0; // achromatic + } + else { + const d = maxValue - minValue; + s = l > 0.5 ? d / (2 - maxValue - minValue) : d / (maxValue + minValue); + switch (maxValue) { + case r: + h = (g - b) / d + (g < b ? 6 : 0); + break; + case g: + h = (b - r) / d + 2; + break; + case b: + h = (r - g) / d + 4; + break; + } + h /= 6; + } + return [Math.round(h * 360), Math.round(s * 100), Math.round(l * 100)]; + } + /** + * Returns source of this color (where source is an array representation; ex: [200, 200, 100, 1]) + * @return {TColorAlphaSource} + */ + getSource() { + return this._source; + } + /** + * Sets source of this color (where source is an array representation; ex: [200, 200, 100, 1]) + * @param {TColorAlphaSource} source + */ + setSource(source) { + this._source = source; + } + /** + * Returns color representation in RGB format + * @return {String} ex: rgb(0-255,0-255,0-255) + */ + toRgb() { + const source = this.getSource(); + return `rgb(${source[0]},${source[1]},${source[2]})`; + } + /** + * Returns color representation in RGBA format + * @return {String} ex: rgba(0-255,0-255,0-255,0-1) + */ + toRgba() { + const source = this.getSource(); + return `rgba(${source[0]},${source[1]},${source[2]},${source[3]})`; + } + /** + * Returns color representation in HSL format + * @return {String} ex: hsl(0-360,0%-100%,0%-100%) + */ + toHsl() { + const source = this.getSource(), hsl = this._rgbToHsl(source[0], source[1], source[2]); + return `hsl(${hsl[0]},${hsl[1]}%,${hsl[2]}%)`; + } + /** + * Returns color representation in HSLA format + * @return {String} ex: hsla(0-360,0%-100%,0%-100%,0-1) + */ + toHsla() { + const source = this.getSource(), hsl = this._rgbToHsl(source[0], source[1], source[2]); + return `hsla(${hsl[0]},${hsl[1]}%,${hsl[2]}%,${source[3]})`; + } + /** + * Returns color representation in HEX format + * @return {String} ex: FF5555 + */ + toHex() { + const [r, g, b] = this.getSource(); + return `${hexify(r)}${hexify(g)}${hexify(b)}`; + } + /** + * Returns color representation in HEXA format + * @return {String} ex: FF5555CC + */ + toHexa() { + const source = this.getSource(); + return `${this.toHex()}${hexify(Math.round(source[3] * 255))}`; + } + /** + * Gets value of alpha channel for this color + * @return {Number} 0-1 + */ + getAlpha() { + return this.getSource()[3]; + } + /** + * Sets value of alpha channel for this color + * @param {Number} alpha Alpha value 0-1 + * @return {Color} thisArg + */ + setAlpha(alpha) { + const source = this.getSource(); + source[3] = alpha; + this.setSource(source); + return this; + } + /** + * Transforms color to its grayscale representation + * @return {Color} thisArg + */ + toGrayscale() { + const source = this.getSource(), average = parseInt((source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0), 10), currentAlpha = source[3]; + this.setSource([average, average, average, currentAlpha]); + return this; + } + /** + * Transforms color to its black and white representation + * @param {Number} threshold + * @return {Color} thisArg + */ + toBlackWhite(threshold) { + const source = this.getSource(), currentAlpha = source[3]; + let average = Math.round(source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11); + average = average < (threshold || 127) ? 0 : 255; + this.setSource([average, average, average, currentAlpha]); + return this; + } + /** + * Overlays color with another color + * @param {String|Color} otherColor + * @return {Color} thisArg + */ + overlayWith(otherColor) { + if (!(otherColor instanceof Color)) { + otherColor = new Color(otherColor); + } + const result = [], alpha = this.getAlpha(), otherAlpha = 0.5, source = this.getSource(), otherSource = otherColor.getSource(); + for (let i = 0; i < 3; i++) { + result.push(Math.round(source[i] * (1 - otherAlpha) + otherSource[i] * otherAlpha)); + } + result[3] = alpha; + this.setSource(result); + return this; + } + /** + * Returns new color object, when given a color in RGB format + * @memberOf Color + * @param {String} color Color value ex: rgb(0-255,0-255,0-255) + * @return {Color} + */ + static fromRgb(color) { + return Color.fromRgba(color); + } + /** + * Returns new color object, when given a color in RGBA format + * @static + * @function + * @memberOf Color + * @param {String} color + * @return {Color} + */ + static fromRgba(color) { + return Color.fromSource(Color.sourceFromRgb(color)); + } + /** + * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in RGB or RGBA format + * @memberOf Color + * @param {String} color Color value ex: rgb(0-255,0-255,0-255), rgb(0%-100%,0%-100%,0%-100%) + * @return {TColorAlphaSource | undefined} source + */ + static sourceFromRgb(color) { + const match = color.match(reRGBa); + if (match) { + const r = (parseInt(match[1], 10) / (/%$/.test(match[1]) ? 100 : 1)) * + (/%$/.test(match[1]) ? 255 : 1), g = (parseInt(match[2], 10) / (/%$/.test(match[2]) ? 100 : 1)) * + (/%$/.test(match[2]) ? 255 : 1), b = (parseInt(match[3], 10) / (/%$/.test(match[3]) ? 100 : 1)) * + (/%$/.test(match[3]) ? 255 : 1); + return [ + parseInt(r, 10), + parseInt(g, 10), + parseInt(b, 10), + match[4] ? parseFloat(match[4]) : 1, + ]; + } + } + /** + * Returns new color object, when given a color in HSL format + * @param {String} color Color value ex: hsl(0-260,0%-100%,0%-100%) + * @memberOf Color + * @return {Color} + */ + static fromHsl(color) { + return Color.fromHsla(color); + } + /** + * Returns new color object, when given a color in HSLA format + * @static + * @function + * @memberOf Color + * @param {String} color + * @return {Color} + */ + static fromHsla(color) { + return Color.fromSource(Color.sourceFromHsl(color)); + } + /** + * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HSL or HSLA format. + * Adapted from https://github.com/mjijackson + * @memberOf Color + * @param {String} color Color value ex: hsl(0-360,0%-100%,0%-100%) or hsla(0-360,0%-100%,0%-100%, 0-1) + * @return {TColorAlphaSource | undefined} source + * @see http://http://www.w3.org/TR/css3-color/#hsl-color + */ + static sourceFromHsl(color) { + const match = color.match(reHSLa); + if (!match) { + return; + } + const h = (((parseFloat(match[1]) % 360) + 360) % 360) / 360, s = parseFloat(match[2]) / (/%$/.test(match[2]) ? 100 : 1), l = parseFloat(match[3]) / (/%$/.test(match[3]) ? 100 : 1); + let r, g, b; + if (s === 0) { + r = g = b = l; + } + else { + const q = l <= 0.5 ? l * (s + 1) : l + s - l * s, p = l * 2 - q; + r = hue2rgb(p, q, h + 1 / 3); + g = hue2rgb(p, q, h); + b = hue2rgb(p, q, h - 1 / 3); + } + return [ + Math.round(r * 255), + Math.round(g * 255), + Math.round(b * 255), + match[4] ? parseFloat(match[4]) : 1, + ]; + } + /** + * Returns new color object, when given a color in HEX format + * @static + * @memberOf Color + * @param {String} color Color value ex: FF5555 + * @return {Color} + */ + static fromHex(color) { + return Color.fromSource(Color.sourceFromHex(color)); + } + /** + * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HEX format + * @static + * @memberOf Color + * @param {String} color ex: FF5555 or FF5544CC (RGBa) + * @return {TColorAlphaSource | undefined} source + */ + static sourceFromHex(color) { + if (color.match(reHex)) { + const value = color.slice(color.indexOf('#') + 1), isShortNotation = value.length === 3 || value.length === 4, isRGBa = value.length === 8 || value.length === 4, r = isShortNotation + ? value.charAt(0) + value.charAt(0) + : value.substring(0, 2), g = isShortNotation + ? value.charAt(1) + value.charAt(1) + : value.substring(2, 4), b = isShortNotation + ? value.charAt(2) + value.charAt(2) + : value.substring(4, 6), a = isRGBa + ? isShortNotation + ? value.charAt(3) + value.charAt(3) + : value.substring(6, 8) + : 'FF'; + return [ + parseInt(r, 16), + parseInt(g, 16), + parseInt(b, 16), + parseFloat((parseInt(a, 16) / 255).toFixed(2)), + ]; + } + } + /** + * Returns new color object, when given color in array representation (ex: [200, 100, 100, 0.5]) + * @static + * @memberOf Color + * @param {TColorSource | TColorAlphaSource} source + * @return {Color} + */ + static fromSource(source) { + const oColor = new Color(); + oColor.setSource(source); + return oColor; + } +} +fabric$1.Color = Color; + +//@ts-nocheck +/** + * Array holding all running animations + * @memberof fabric + * @type {AnimationContext[]} + */ +class RunningAnimations extends Array { + /** + * cancel all running animations at the next requestAnimFrame + * @returns {AnimationContext[]} + */ + cancelAll() { + const animations = this.splice(0); + animations.forEach((animation) => animation.cancel()); + return animations; + } /** * cancel all running animations attached to canvas at the next requestAnimFrame * @param {fabric.Canvas} canvas * @returns {AnimationContext[]} */ - cancelByCanvas: function (canvas) { - if (!canvas) { - return []; - } - var cancelled = this.filter(function (animation) { - return typeof animation.target === 'object' && animation.target.canvas === canvas; - }); - cancelled.forEach(function (animation) { - animation.cancel(); - }); - return cancelled; - }, - + cancelByCanvas(canvas) { + if (!canvas) { + return []; + } + const cancelled = this.filter((animation) => typeof animation.target === 'object' && + animation.target.canvas === canvas); + cancelled.forEach((animation) => animation.cancel()); + return cancelled; + } /** * cancel all running animations for target at the next requestAnimFrame * @param {*} target * @returns {AnimationContext[]} */ - cancelByTarget: function (target) { - var cancelled = this.findAnimationsByTarget(target); - cancelled.forEach(function (animation) { - animation.cancel(); - }); - return cancelled; - }, - + cancelByTarget(target) { + const cancelled = this.findAnimationsByTarget(target); + cancelled.forEach((animation) => animation.cancel()); + return cancelled; + } /** * * @param {CancelFunction} cancelFunc the function returned by animate * @returns {number} */ - findAnimationIndex: function (cancelFunc) { - return this.indexOf(this.findAnimation(cancelFunc)); - }, - + findAnimationIndex(cancelFunc) { + return this.indexOf(this.findAnimation(cancelFunc)); + } /** * * @param {CancelFunction} cancelFunc the function returned by animate * @returns {AnimationContext | undefined} animation's options object */ - findAnimation: function (cancelFunc) { - return this.find(function (animation) { - return animation.cancel === cancelFunc; - }); - }, - + findAnimation(cancelFunc) { + return this.find((animation) => animation.cancel === cancelFunc); + } /** * * @param {*} target the object that is assigned to the target property of the animation context * @returns {AnimationContext[]} array of animation options object associated with target */ - findAnimationsByTarget: function (target) { - if (!target) { - return []; - } - return this.filter(function (animation) { - return animation.target === target; - }); + findAnimationsByTarget(target) { + if (!target) { + return []; + } + return this.filter((animation) => animation.target === target); } - }); - - function noop() { - return false; - } - - function defaultEasing(t, b, c, d) { - return -c * Math.cos(t / d * (Math.PI / 2)) + c + b; - } - - /** - * Changes value from one to another within certain period of time, invoking callbacks as value is being changed. - * @memberOf fabric.util - * @param {AnimationOptions} [options] Animation options - * @example - * // Note: startValue, endValue, and byValue must match the type - * fabric.util.animate({ startValue: 0, endValue: 1, byValue: 0.25 }) - * fabric.util.animate({ startValue: [0, 1], endValue: [1, 2], byValue: [0.25, 0.25] }) - * @returns {CancelFunction} cancel function - */ - function animate(options) { - options || (options = {}); - var cancel = false, - context, - removeFromRegistry = function () { - var index = fabric.runningAnimations.indexOf(context); - return index > -1 && fabric.runningAnimations.splice(index, 1)[0]; - }; +} +const runningAnimations = new RunningAnimations(); +fabric$1.runningAnimations = runningAnimations; - context = extend(clone(options), { - cancel: function () { +//@ts-nocheck +/** + * + * @typedef {Object} AnimationOptions + * Animation of a value or list of values. + * @property {Function} [onChange] Callback; invoked on every value change + * @property {Function} [onComplete] Callback; invoked when value change is completed + * @property {number | number[]} [startValue=0] Starting value + * @property {number | number[]} [endValue=100] Ending value + * @property {number | number[]} [byValue=100] Value to modify the property by + * @property {Function} [easing] Easing function + * @property {number} [duration=500] Duration of change (in ms) + * @property {Function} [abort] Additional function with logic. If returns true, animation aborts. + * @property {number} [delay] Delay of animation start (in ms) + * + * @typedef {() => void} CancelFunction + * + * @typedef {Object} AnimationCurrentState + * @property {number | number[]} currentValue value in range [`startValue`, `endValue`] + * @property {number} completionRate value in range [0, 1] + * @property {number} durationRate value in range [0, 1] + * + * @typedef {(AnimationOptions & AnimationCurrentState & { cancel: CancelFunction }} AnimationContext + */ +const defaultEasing = (t, b, c, d) => -c * Math.cos((t / d) * (Math.PI / 2)) + c + b; +/** + * Changes value from one to another within certain period of time, invoking callbacks as value is being changed. + * @memberOf fabric.util + * @param {AnimationOptions} [options] Animation options + * When using lists, think of something like this: + * @example + * fabric.util.animate({ + * startValue: [1, 2, 3], + * endValue: [2, 4, 6], + * onChange: function([x, y, zoom]) { + * canvas.zoomToPoint(new Point(x, y), zoom); + * canvas.requestRenderAll(); + * } + * }); + * + * @example + * fabric.util.animate({ + * startValue: 1, + * endValue: 0, + * onChange: function(v) { + * obj.set('opacity', v); + * canvas.requestRenderAll(); + * } + * }); + * + * @returns {CancelFunction} cancel function + */ +function animate(options = {}) { + let cancel = false; + const { startValue = 0, duration = 500, easing = defaultEasing, onChange = noop, abort = noop, onComplete = noop, endValue = 100, delay = 0, } = options; + const context = Object.assign(Object.assign({}, options), { currentValue: startValue, completionRate: 0, durationRate: 0 }); + const removeFromRegistry = () => { + const index = runningAnimations.indexOf(context); + return index > -1 && runningAnimations.splice(index, 1)[0]; + }; + context.cancel = function () { cancel = true; return removeFromRegistry(); - }, - currentValue: 'startValue' in options ? options.startValue : 0, - completionRate: 0, - durationRate: 0 - }); - fabric.runningAnimations.push(context); - - requestAnimFrame(function(timestamp) { - var start = timestamp || +new Date(), - duration = options.duration || 500, - finish = start + duration, time, - onChange = options.onChange || noop, - abort = options.abort || noop, - onComplete = options.onComplete || noop, - easing = options.easing || defaultEasing, - isMany = 'startValue' in options ? options.startValue.length > 0 : false, - startValue = 'startValue' in options ? options.startValue : 0, - endValue = 'endValue' in options ? options.endValue : 100, - byValue = options.byValue || (isMany ? startValue.map(function(value, i) { - return endValue[i] - startValue[i]; - }) : endValue - startValue); - - options.onStart && options.onStart(); - - (function tick(ticktime) { - time = ticktime || +new Date(); - var currentTime = time > finish ? duration : (time - start), - timePerc = currentTime / duration, - current = isMany ? startValue.map(function(_value, i) { - return easing(currentTime, startValue[i], byValue[i], duration); - }) : easing(currentTime, startValue, byValue, duration), - valuePerc = isMany ? Math.abs((current[0] - startValue[0]) / byValue[0]) - : Math.abs((current - startValue) / byValue); - // update context - context.currentValue = isMany ? current.slice() : current; - context.completionRate = valuePerc; - context.durationRate = timePerc; - if (cancel) { - return; - } - if (abort(current, valuePerc, timePerc)) { - removeFromRegistry(); - return; - } - if (time > finish) { - // update context - context.currentValue = isMany ? endValue.slice() : endValue; - context.completionRate = 1; - context.durationRate = 1; - // execute callbacks - onChange(isMany ? endValue.slice() : endValue, 1, 1); - onComplete(endValue, 1, 1); - removeFromRegistry(); - return; - } - else { - onChange(current, valuePerc, timePerc); - requestAnimFrame(tick); - } - })(start); - }); - + }; + runningAnimations.push(context); + const runner = function (timestamp) { + const start = timestamp || +new Date(), finish = start + duration, isMany = Array.isArray(startValue), byValue = options.byValue || + (isMany + ? startValue.map((value, i) => endValue[i] - value) + : endValue - startValue); + options.onStart && options.onStart(); + (function tick(ticktime) { + const time = ticktime || +new Date(); + const currentTime = time > finish ? duration : time - start, timePerc = currentTime / duration, current = isMany + ? startValue.map((_value, i) => easing(currentTime, _value, byValue[i], duration)) + : easing(currentTime, startValue, byValue, duration), valuePerc = isMany + ? Math.abs((current[0] - startValue[0]) / byValue[0]) + : Math.abs((current - startValue) / byValue); + // update context + context.currentValue = isMany ? current.slice() : current; + context.completionRate = valuePerc; + context.durationRate = timePerc; + if (cancel) { + return; + } + if (abort(current, valuePerc, timePerc)) { + removeFromRegistry(); + return; + } + if (time > finish) { + // update context + context.currentValue = isMany ? endValue.slice() : endValue; + context.completionRate = 1; + context.durationRate = 1; + // execute callbacks + onChange(isMany ? endValue.slice() : endValue, 1, 1); + onComplete(endValue, 1, 1); + removeFromRegistry(); + return; + } + else { + onChange(current, valuePerc, timePerc); + requestAnimFrame(tick); + } + })(start); + }; + if (delay > 0) { + setTimeout(() => requestAnimFrame(runner), delay); + } + else { + requestAnimFrame(runner); + } return context.cancel; - } - - var _requestAnimFrame = fabric.window.requestAnimationFrame || - fabric.window.webkitRequestAnimationFrame || - fabric.window.mozRequestAnimationFrame || - fabric.window.oRequestAnimationFrame || - fabric.window.msRequestAnimationFrame || - function(callback) { - return fabric.window.setTimeout(callback, 1000 / 60); - }; - - var _cancelAnimFrame = fabric.window.cancelAnimationFrame || fabric.window.clearTimeout; - - /** - * requestAnimationFrame polyfill based on http://paulirish.com/2011/requestanimationframe-for-smart-animating/ - * In order to get a precise start time, `requestAnimFrame` should be called as an entry into the method - * @memberOf fabric.util - * @param {Function} callback Callback to invoke - * @param {DOMElement} element optional Element to associate with animation - */ - function requestAnimFrame() { - return _requestAnimFrame.apply(fabric.window, arguments); - } - - function cancelAnimFrame() { - return _cancelAnimFrame.apply(fabric.window, arguments); - } - - fabric.util.animate = animate; - fabric.util.requestAnimFrame = requestAnimFrame; - fabric.util.cancelAnimFrame = cancelAnimFrame; - fabric.runningAnimations = RUNNING_ANIMATIONS; -})(); - - -(function() { - // Calculate an in-between color. Returns a "rgba()" string. - // Credit: Edwin Martin - // http://www.bitstorm.org/jquery/color-animation/jquery.animate-colors.js - function calculateColor(begin, end, pos) { - var color = 'rgba(' - + parseInt((begin[0] + pos * (end[0] - begin[0])), 10) + ',' - + parseInt((begin[1] + pos * (end[1] - begin[1])), 10) + ',' - + parseInt((begin[2] + pos * (end[2] - begin[2])), 10); +} +const _requestAnimFrame = fabric$1.window.requestAnimationFrame || + function (callback) { + return fabric$1.window.setTimeout(callback, 1000 / 60); + }; +const _cancelAnimFrame = fabric$1.window.cancelAnimationFrame || fabric$1.window.clearTimeout; +/** + * requestAnimationFrame polyfill based on http://paulirish.com/2011/requestanimationframe-for-smart-animating/ + * In order to get a precise start time, `requestAnimFrame` should be called as an entry into the method + * @memberOf fabric.util + * @param {Function} callback Callback to invoke + * @param {DOMElement} element optional Element to associate with animation + */ +function requestAnimFrame(...args) { + return _requestAnimFrame.apply(fabric$1.window, args); +} +function cancelAnimFrame(...args) { + return _cancelAnimFrame.apply(fabric$1.window, args); +} - color += ',' + (begin && end ? parseFloat(begin[3] + pos * (end[3] - begin[3])) : 1); +// Calculate an in-between color. Returns a "rgba()" string. +// Credit: Edwin Martin +// http://www.bitstorm.org/jquery/color-animation/jquery.animate-colors.js +// const calculateColor = (begin: number[], end: number[], pos) => { +// const [r, g, b, _a] = begin.map((beg, index) => beg + pos * (end[index] - beg)); +// const a = begin && end ? parseFloat(_a) : 1; +// return `rgba(${parseInt(r, 10)},${parseInt(g, 10)},${parseInt(b, 10)},${a})`; +// } +// color animation is broken. This function pass the tests for some reasons +// but begin and end aren't array anymore since we improved animate function +// to handler arrays internally. +function calculateColor(begin, end, pos) { + let color = 'rgba(' + + parseInt(begin[0] + pos * (end[0] - begin[0]), 10) + + ',' + + parseInt(begin[1] + pos * (end[1] - begin[1]), 10) + + ',' + + parseInt(begin[2] + pos * (end[2] - begin[2]), 10); + color += + ',' + (begin && end ? parseFloat(begin[3] + pos * (end[3] - begin[3])) : 1); color += ')'; return color; - } - - /** - * Changes the color from one to another within certain period of time, invoking callbacks as value is being changed. - * @memberOf fabric.util - * @param {String} fromColor The starting color in hex or rgb(a) format. - * @param {String} toColor The starting color in hex or rgb(a) format. - * @param {Number} [duration] Duration of change (in ms). - * @param {Object} [options] Animation options - * @param {Function} [options.onChange] Callback; invoked on every value change - * @param {Function} [options.onComplete] Callback; invoked when value change is completed - * @param {Function} [options.colorEasing] Easing function. Note that this function only take two arguments (currentTime, duration). Thus the regular animation easing functions cannot be used. - * @param {Function} [options.abort] Additional function with logic. If returns true, onComplete is called. - * @returns {Function} abort function - */ - function animateColor(fromColor, toColor, duration, options) { - var startColor = new fabric.Color(fromColor).getSource(), - endColor = new fabric.Color(toColor).getSource(), - originalOnComplete = options.onComplete, - originalOnChange = options.onChange; - options = options || {}; +} +const defaultColorEasing = (currentTime, duration) => 1 - Math.cos((currentTime / duration) * (Math.PI / 2)); +/** + * Changes the color from one to another within certain period of time, invoking callbacks as value is being changed. + * @memberOf fabric.util + * @param {String} fromColor The starting color in hex or rgb(a) format. + * @param {String} toColor The starting color in hex or rgb(a) format. + * @param {Number} [duration] Duration of change (in ms). + * @param {Object} [options] Animation options + * @param {Function} [options.onChange] Callback; invoked on every value change + * @param {Function} [options.onComplete] Callback; invoked when value change is completed + * @param {Function} [options.colorEasing] Easing function. Note that this function only take two arguments (currentTime, duration). Thus the regular animation easing functions cannot be used. + * @param {Function} [options.abort] Additional function with logic. If returns true, onComplete is called. + * @returns {Function} abort function + */ +function animateColor(fromColor, toColor, duration = 500, _a = {}) { + var { colorEasing = defaultColorEasing, onComplete, onChange } = _a, restOfOptions = __rest(_a, ["colorEasing", "onComplete", "onChange"]); + const startColor = new Color(fromColor).getSource(), endColor = new Color(toColor).getSource(); + return animate(Object.assign(Object.assign({}, restOfOptions), { duration, startValue: startColor, endValue: endColor, byValue: endColor, easing: (currentTime, startValue, byValue, duration) => calculateColor(startValue, byValue, colorEasing(currentTime, duration)), + // has to take in account for color restoring; + onComplete: (current, valuePerc, timePerc) => onComplete === null || onComplete === void 0 ? void 0 : onComplete(calculateColor(endColor, endColor, 0), valuePerc, timePerc), onChange: (current, valuePerc, timePerc) => { + if (onChange) { + if (Array.isArray(current)) { + return onChange(calculateColor(current, current, 0), valuePerc, timePerc); + } + onChange(current, valuePerc, timePerc); + } + } })); +} - return fabric.util.animate(fabric.util.object.extend(options, { - duration: duration || 500, - startValue: startColor, - endValue: endColor, - byValue: endColor, - easing: function (currentTime, startValue, byValue, duration) { - var posValue = options.colorEasing - ? options.colorEasing(currentTime, duration) - : 1 - Math.cos(currentTime / duration * (Math.PI / 2)); - return calculateColor(startValue, byValue, posValue); - }, - // has to take in account for color restoring; - onComplete: function(current, valuePerc, timePerc) { - if (originalOnComplete) { - return originalOnComplete( - calculateColor(endColor, endColor, 0), - valuePerc, - timePerc - ); +//@ts-nocheck +function addMethods(klass, source, parent) { + for (var property in source) { + if (property in klass.prototype && + typeof klass.prototype[property] === 'function' && + (source[property] + '').indexOf('callSuper') > -1) { + klass.prototype[property] = (function (property) { + return function (...args) { + var superclass = this.constructor.superclass; + this.constructor.superclass = parent; + var returnValue = source[property].call(this, ...args); + this.constructor.superclass = superclass; + if (property !== 'initialize') { + return returnValue; + } + }; + })(property); } - }, - onChange: function(current, valuePerc, timePerc) { - if (originalOnChange) { - if (Array.isArray(current)) { - return originalOnChange( - calculateColor(current, current, 0), - valuePerc, - timePerc - ); - } - originalOnChange(current, valuePerc, timePerc); + else { + klass.prototype[property] = source[property]; } - } - })); - } - - fabric.util.animateColor = animateColor; - -})(); - - -(function() { - - function normalize(a, c, p, s) { - if (a < Math.abs(c)) { - a = c; - s = p / 4; } - else { - //handle the 0/0 case: - if (c === 0 && a === 0) { - s = p / (2 * Math.PI) * Math.asin(1); - } - else { - s = p / (2 * Math.PI) * Math.asin(c / a); - } - } - return { a: a, c: c, p: p, s: s }; - } - - function elastic(opts, t, d) { - return opts.a * - Math.pow(2, 10 * (t -= 1)) * - Math.sin( (t * d - opts.s) * (2 * Math.PI) / opts.p ); - } - - /** - * Cubic easing out - * @memberOf fabric.util.ease - */ - function easeOutCubic(t, b, c, d) { - return c * ((t = t / d - 1) * t * t + 1) + b; - } - - /** - * Cubic easing in and out - * @memberOf fabric.util.ease - */ - function easeInOutCubic(t, b, c, d) { - t /= d / 2; - if (t < 1) { - return c / 2 * t * t * t + b; +} +function Subclass() { } +function callSuper(methodName, ...args) { + var parentMethod = null, _this = this; + // climb prototype chain to find method not equal to callee's method + while (_this.constructor.superclass) { + var superClassMethod = _this.constructor.superclass.prototype[methodName]; + if (_this[methodName] !== superClassMethod) { + parentMethod = superClassMethod; + break; + } + // eslint-disable-next-line + _this = _this.constructor.superclass.prototype; } - return c / 2 * ((t -= 2) * t * t + 2) + b; - } - - /** - * Quartic easing in - * @memberOf fabric.util.ease - */ - function easeInQuart(t, b, c, d) { - return c * (t /= d) * t * t * t + b; - } - - /** - * Quartic easing out - * @memberOf fabric.util.ease - */ - function easeOutQuart(t, b, c, d) { - return -c * ((t = t / d - 1) * t * t * t - 1) + b; - } - - /** - * Quartic easing in and out - * @memberOf fabric.util.ease - */ - function easeInOutQuart(t, b, c, d) { - t /= d / 2; - if (t < 1) { - return c / 2 * t * t * t * t + b; + if (!parentMethod) { + return console.log('tried to callSuper ' + + methodName + + ', method not found in prototype chain', this); } - return -c / 2 * ((t -= 2) * t * t * t - 2) + b; - } - - /** - * Quintic easing in - * @memberOf fabric.util.ease - */ - function easeInQuint(t, b, c, d) { - return c * (t /= d) * t * t * t * t + b; - } - - /** - * Quintic easing out - * @memberOf fabric.util.ease - */ - function easeOutQuint(t, b, c, d) { - return c * ((t = t / d - 1) * t * t * t * t + 1) + b; - } - - /** - * Quintic easing in and out - * @memberOf fabric.util.ease - */ - function easeInOutQuint(t, b, c, d) { - t /= d / 2; - if (t < 1) { - return c / 2 * t * t * t * t * t + b; + return parentMethod.call(this, ...args); +} +/** + * Helper for creation of "classes". + * @memberOf fabric.util + * @param {Function} [parent] optional "Class" to inherit from + * @param {Object} [properties] Properties shared by all instances of this class + * (be careful modifying objects defined here as this would affect all instances) + */ +function createClass(...args) { + var parent = null, properties = [...args]; + if (typeof args[0] === 'function') { + parent = properties.shift(); } - return c / 2 * ((t -= 2) * t * t * t * t + 2) + b; - } - - /** - * Sinusoidal easing in - * @memberOf fabric.util.ease - */ - function easeInSine(t, b, c, d) { - return -c * Math.cos(t / d * (Math.PI / 2)) + c + b; - } - - /** - * Sinusoidal easing out - * @memberOf fabric.util.ease - */ - function easeOutSine(t, b, c, d) { - return c * Math.sin(t / d * (Math.PI / 2)) + b; - } - - /** - * Sinusoidal easing in and out - * @memberOf fabric.util.ease - */ - function easeInOutSine(t, b, c, d) { - return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b; - } - - /** - * Exponential easing in - * @memberOf fabric.util.ease - */ - function easeInExpo(t, b, c, d) { - return (t === 0) ? b : c * Math.pow(2, 10 * (t / d - 1)) + b; - } - - /** - * Exponential easing out - * @memberOf fabric.util.ease - */ - function easeOutExpo(t, b, c, d) { - return (t === d) ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b; - } - - /** - * Exponential easing in and out - * @memberOf fabric.util.ease - */ - function easeInOutExpo(t, b, c, d) { - if (t === 0) { - return b; + function klass(...klassArgs) { + this.initialize.call(this, ...klassArgs); } - if (t === d) { - return b + c; + klass.superclass = parent; + klass.subclasses = []; + if (parent) { + Subclass.prototype = parent.prototype; + klass.prototype = new Subclass(); + parent.subclasses.push(klass); } - t /= d / 2; - if (t < 1) { - return c / 2 * Math.pow(2, 10 * (t - 1)) + b; + for (var i = 0, length = properties.length; i < length; i++) { + addMethods(klass, properties[i], parent); + } + if (!klass.prototype.initialize) { + klass.prototype.initialize = noop; } - return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b; - } + klass.prototype.constructor = klass; + klass.prototype.callSuper = callSuper; + return klass; +} - /** - * Circular easing in - * @memberOf fabric.util.ease - */ - function easeInCirc(t, b, c, d) { - return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b; - } +//@ts-nocheck +/** + * @namespace fabric.util + */ +fabric$1.util = { + cos, + sin, + rotateVector, + createVector, + calcAngleBetweenVectors, + getHatVector, + getBisector, + degreesToRadians: degreesToRadians$1, + radiansToDegrees, + rotatePoint, + // probably we should stop exposing this from the interface + getRandomInt, + removeFromArray, + projectStrokeOnPoints, + // matrix.ts file + transformPoint, + invertTransform, + composeMatrix, + qrDecompose, + calcDimensionsMatrix, + calcRotateMatrix, + multiplyTransformMatrices, + // textStyles.ts file + stylesFromArray, + stylesToArray, + hasStyleChanged, + object: { + clone, + extend, + }, + createCanvasElement, + createImage, + copyCanvasElement, + toDataURL, + toFixed, + matrixToSVG, + parsePreserveAspectRatioAttribute, + groupSVGElements, + parseUnit, + getSvgAttributes, + findScaleToFit, + findScaleToCover, + capValue, + saveObjectTransform, + resetObjectTransform, + addTransformToObject, + applyTransformToObject, + removeTransformFromObject, + makeBoundingBoxFromPoints, + calcPlaneChangeMatrix, + sendPointToPlane, + transformPointRelativeToCanvas, + sendObjectToPlane, + string: { + camelize, + capitalize, + escapeXml, + graphemeSplit, + }, + getKlass, + loadImage, + enlivenObjects, + enlivenObjectEnlivables, + pick, + joinPath, + parsePath, + makePathSimpler, + getSmoothPathFromPoints, + getPathSegmentsInfo, + getBoundsOfCurve, + getPointOnPath, + transformPath, + getRegularPolygonPath, + request, + setStyle, + isTouchEvent, + getPointer, + removeListener, + addListener, + wrapElement, + getScrollLeftTop, + getElementOffset, + getNodeCanvas, + cleanUpJsdomNode, + makeElementUnselectable, + makeElementSelectable, + isTransparent, + sizeAfterTransform, + mergeClipPaths, + ease, + animateColor, + animate, + requestAnimFrame, + cancelAnimFrame, + createClass, +}; - /** - * Circular easing out - * @memberOf fabric.util.ease - */ - function easeOutCirc(t, b, c, d) { - return c * Math.sqrt(1 - (t = t / d - 1) * t) + b; - } +//@ts-nocheck +const ElementsParser = function (elements, callback, options, reviver, parsingOptions, doc) { + this.elements = elements; + this.callback = callback; + this.options = options; + this.reviver = reviver; + this.svgUid = (options && options.svgUid) || 0; + this.parsingOptions = parsingOptions; + this.regexUrl = /^url\(['"]?#([^'"]+)['"]?\)/g; + this.doc = doc; +}; +(function (proto) { + proto.parse = function () { + this.instances = new Array(this.elements.length); + this.numElements = this.elements.length; + this.createObjects(); + }; + proto.createObjects = function () { + this.elements.forEach((element, i) => { + element.setAttribute('svgUid', this.svgUid); + this.createObject(element, i); + }); + }; + proto.findTag = function (el) { + return fabric$1[capitalize(el.tagName.replace('svg:', ''))]; + }; + proto.createObject = function (el, index) { + const klass = this.findTag(el); + if (klass && klass.fromElement) { + try { + klass.fromElement(el, this.createCallback(index, el), this.options); + } + catch (err) { + console.log(err); + } + } + else { + this.checkIfDone(); + } + }; + proto.createCallback = function (index, el) { + const _this = this; + return function (obj) { + let _options; + _this.resolveGradient(obj, el, 'fill'); + _this.resolveGradient(obj, el, 'stroke'); + if (obj instanceof fabric$1.Image && obj._originalElement) { + _options = obj.parsePreserveAspectRatioAttribute(el); + } + obj._removeTransformMatrix(_options); + _this.resolveClipPath(obj, el); + _this.reviver && _this.reviver(el, obj); + _this.instances[index] = obj; + _this.checkIfDone(); + }; + }; + proto.extractPropertyDefinition = function (obj, property, storage) { + const value = obj[property], regex = this.regexUrl; + if (!regex.test(value)) { + return; + } + regex.lastIndex = 0; + const id = regex.exec(value)[1]; + regex.lastIndex = 0; + return fabric$1[storage][this.svgUid][id]; + }; + proto.resolveGradient = function (obj, el, property) { + const gradientDef = this.extractPropertyDefinition(obj, property, 'gradientDefs'); + if (gradientDef) { + const opacityAttr = el.getAttribute(property + '-opacity'); + const gradient = fabric$1.Gradient.fromElement(gradientDef, obj, Object.assign(Object.assign({}, this.options), { opacity: opacityAttr })); + obj.set(property, gradient); + } + }; + proto.createClipPathCallback = function (obj, container) { + return function (_newObj) { + _newObj._removeTransformMatrix(); + _newObj.fillRule = _newObj.clipRule; + container.push(_newObj); + }; + }; + proto.resolveClipPath = function (obj, usingElement) { + var clipPath = this.extractPropertyDefinition(obj, 'clipPath', 'clipPaths'), element, klass, objTransformInv, container, gTransform; + if (clipPath) { + container = []; + objTransformInv = invertTransform(obj.calcTransformMatrix()); + // move the clipPath tag as sibling to the real element that is using it + const clipPathTag = clipPath[0].parentNode; + let clipPathOwner = usingElement; + while (clipPathOwner.parentNode && + clipPathOwner.getAttribute('clip-path') !== obj.clipPath) { + clipPathOwner = clipPathOwner.parentNode; + } + clipPathOwner.parentNode.appendChild(clipPathTag); + for (let i = 0; i < clipPath.length; i++) { + element = clipPath[i]; + klass = this.findTag(element); + klass.fromElement(element, this.createClipPathCallback(obj, container), this.options); + } + if (container.length === 1) { + clipPath = container[0]; + } + else { + clipPath = new fabric$1.Group(container); + } + gTransform = multiplyTransformMatrices(objTransformInv, clipPath.calcTransformMatrix()); + if (clipPath.clipPath) { + this.resolveClipPath(clipPath, clipPathOwner); + } + const options = qrDecompose(gTransform); + clipPath.flipX = false; + clipPath.flipY = false; + clipPath.set('scaleX', options.scaleX); + clipPath.set('scaleY', options.scaleY); + clipPath.angle = options.angle; + clipPath.skewX = options.skewX; + clipPath.skewY = 0; + clipPath.setPositionByOrigin({ x: options.translateX, y: options.translateY }, 'center', 'center'); + obj.clipPath = clipPath; + } + else { + // if clip-path does not resolve to any element, delete the property. + delete obj.clipPath; + } + }; + proto.checkIfDone = function () { + if (--this.numElements === 0) { + this.instances = this.instances.filter(function (el) { + // eslint-disable-next-line no-eq-null, eqeqeq + return el != null; + }); + this.callback(this.instances, this.elements); + } + }; +})(ElementsParser.prototype); - /** - * Circular easing in and out - * @memberOf fabric.util.ease - */ - function easeInOutCirc(t, b, c, d) { - t /= d / 2; - if (t < 1) { - return -c / 2 * (Math.sqrt(1 - t * t) - 1) + b; +//@ts-nocheck +/** + * Returns CSS rules for a given SVG document + * @param {SVGDocument} doc SVG document to parse + * @return {Object} CSS rules of this document + */ +function getCSSRules(doc) { + let styles = doc.getElementsByTagName('style'), i, len, allRules = {}, rules; + // very crude parsing of style contents + for (i = 0, len = styles.length; i < len; i++) { + let styleContents = styles[i].textContent; + // remove comments + styleContents = styleContents.replace(/\/\*[\s\S]*?\*\//g, ''); + if (styleContents.trim() === '') { + continue; + } + // recovers all the rule in this form `body { style code... }` + // rules = styleContents.match(/[^{]*\{[\s\S]*?\}/g); + rules = styleContents.split('}'); + // remove empty rules. + rules = rules.filter(function (rule) { + return rule.trim(); + }); + // at this point we have hopefully an array of rules `body { style code... ` + // eslint-disable-next-line no-loop-func + rules.forEach(function (rule) { + const match = rule.split('{'), ruleObj = {}, declaration = match[1].trim(), propertyValuePairs = declaration.split(';').filter(function (pair) { + return pair.trim(); + }); + for (i = 0, len = propertyValuePairs.length; i < len; i++) { + const pair = propertyValuePairs[i].split(':'), property = pair[0].trim(), value = pair[1].trim(); + ruleObj[property] = value; + } + rule = match[0].trim(); + rule.split(',').forEach(function (_rule) { + _rule = _rule.replace(/^svg/i, '').trim(); + if (_rule === '') { + return; + } + if (allRules[_rule]) { + Object.assign(allRules[_rule], ruleObj); + } + else { + allRules[_rule] = Object.assign({}, ruleObj); + } + }); + }); } - return c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b; - } + return allRules; +} - /** - * Elastic easing in - * @memberOf fabric.util.ease - */ - function easeInElastic(t, b, c, d) { - var s = 1.70158, p = 0, a = c; - if (t === 0) { - return b; +//@ts-nocheck +function getMultipleNodes(doc, nodeNames) { + let nodeName, nodeArray = [], nodeList, i, len; + for (i = 0, len = nodeNames.length; i < len; i++) { + nodeName = nodeNames[i]; + nodeList = doc.getElementsByTagName(nodeName); + nodeArray = nodeArray.concat(Array.prototype.slice.call(nodeList)); } - t /= d; - if (t === 1) { - return b + c; + return nodeArray; +} + +//@ts-nocheck +/** + * @private + * to support IE8 missing getElementById on SVGdocument and on node xmlDOM + */ +function elementById(doc, id) { + let el; + doc.getElementById && (el = doc.getElementById(id)); + if (el) { + return el; } - if (!p) { - p = d * 0.3; + let node, i, len, nodelist = doc.getElementsByTagName('*'); + for (i = 0, len = nodelist.length; i < len; i++) { + node = nodelist[i]; + if (id === node.getAttribute('id')) { + return node; + } } - var opts = normalize(a, c, p, s); - return -elastic(opts, t, d) + b; - } +} - /** - * Elastic easing out - * @memberOf fabric.util.ease - */ - function easeOutElastic(t, b, c, d) { - var s = 1.70158, p = 0, a = c; - if (t === 0) { - return b; +//@ts-nocheck +const gradientsAttrs = [ + 'gradientTransform', + 'x1', + 'x2', + 'y1', + 'y2', + 'gradientUnits', + 'cx', + 'cy', + 'r', + 'fx', + 'fy', +]; +const xlinkAttr = 'xlink:href'; +function recursivelyParseGradientsXlink(doc, gradient) { + const xLink = gradient.getAttribute(xlinkAttr).slice(1), referencedGradient = elementById(doc, xLink); + if (referencedGradient && referencedGradient.getAttribute(xlinkAttr)) { + recursivelyParseGradientsXlink(doc, referencedGradient); } - t /= d; - if (t === 1) { - return b + c; + gradientsAttrs.forEach(function (attr) { + if (referencedGradient && + !gradient.hasAttribute(attr) && + referencedGradient.hasAttribute(attr)) { + gradient.setAttribute(attr, referencedGradient.getAttribute(attr)); + } + }); + if (!gradient.children.length) { + const referenceClone = referencedGradient.cloneNode(true); + while (referenceClone.firstChild) { + gradient.appendChild(referenceClone.firstChild); + } } - if (!p) { - p = d * 0.3; + gradient.removeAttribute(xlinkAttr); +} + +//@ts-nocheck +const tagArray = [ + 'linearGradient', + 'radialGradient', + 'svg:linearGradient', + 'svg:radialGradient', +]; +/** + * Parses an SVG document, returning all of the gradient declarations found in it + * @param {SVGDocument} doc SVG document to parse + * @return {Object} Gradient definitions; key corresponds to element id, value -- to gradient definition element + */ +function getGradientDefs(doc) { + let elList = getMultipleNodes(doc, tagArray), el, j = 0, gradientDefs = {}; + j = elList.length; + while (j--) { + el = elList[j]; + if (el.getAttribute('xlink:href')) { + recursivelyParseGradientsXlink(doc, el); + } + gradientDefs[el.getAttribute('id')] = el; } - var opts = normalize(a, c, p, s); - return opts.a * Math.pow(2, -10 * t) * Math.sin((t * d - opts.s) * (2 * Math.PI) / opts.p ) + opts.c + b; - } + return gradientDefs; +} - /** - * Elastic easing in and out - * @memberOf fabric.util.ease - */ - function easeInOutElastic(t, b, c, d) { - var s = 1.70158, p = 0, a = c; - if (t === 0) { - return b; +//@ts-nocheck +/** + * Add a element that envelop all child elements and makes the viewbox transformMatrix descend on all elements + */ +function applyViewboxTransform(element) { + if (!svgViewBoxElementsRegEx.test(element.nodeName)) { + return {}; + } + let viewBoxAttr = element.getAttribute('viewBox'), scaleX = 1, scaleY = 1, minX = 0, minY = 0, viewBoxWidth, viewBoxHeight, matrix, el, widthAttr = element.getAttribute('width'), heightAttr = element.getAttribute('height'), x = element.getAttribute('x') || 0, y = element.getAttribute('y') || 0, preserveAspectRatio = element.getAttribute('preserveAspectRatio') || '', missingViewBox = !viewBoxAttr || !(viewBoxAttr = viewBoxAttr.match(reViewBoxAttrValue)), missingDimAttr = !widthAttr || + !heightAttr || + widthAttr === '100%' || + heightAttr === '100%', toBeParsed = missingViewBox && missingDimAttr, parsedDim = {}, translateMatrix = '', widthDiff = 0, heightDiff = 0; + parsedDim.width = 0; + parsedDim.height = 0; + parsedDim.toBeParsed = toBeParsed; + if (missingViewBox) { + if ((x || y) && + element.parentNode && + element.parentNode.nodeName !== '#document') { + translateMatrix = + ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') '; + matrix = (element.getAttribute('transform') || '') + translateMatrix; + element.setAttribute('transform', matrix); + element.removeAttribute('x'); + element.removeAttribute('y'); + } } - t /= d / 2; - if (t === 2) { - return b + c; + if (toBeParsed) { + return parsedDim; } - if (!p) { - p = d * (0.3 * 1.5); + if (missingViewBox) { + parsedDim.width = parseUnit(widthAttr); + parsedDim.height = parseUnit(heightAttr); + // set a transform for elements that have x y and are inner(only) SVGs + return parsedDim; } - var opts = normalize(a, c, p, s); - if (t < 1) { - return -0.5 * elastic(opts, t, d) + b; + minX = -parseFloat(viewBoxAttr[1]); + minY = -parseFloat(viewBoxAttr[2]); + viewBoxWidth = parseFloat(viewBoxAttr[3]); + viewBoxHeight = parseFloat(viewBoxAttr[4]); + parsedDim.minX = minX; + parsedDim.minY = minY; + parsedDim.viewBoxWidth = viewBoxWidth; + parsedDim.viewBoxHeight = viewBoxHeight; + if (!missingDimAttr) { + parsedDim.width = parseUnit(widthAttr); + parsedDim.height = parseUnit(heightAttr); + scaleX = parsedDim.width / viewBoxWidth; + scaleY = parsedDim.height / viewBoxHeight; } - return opts.a * Math.pow(2, -10 * (t -= 1)) * - Math.sin((t * d - opts.s) * (2 * Math.PI) / opts.p ) * 0.5 + opts.c + b; - } - - /** - * Backwards easing in - * @memberOf fabric.util.ease - */ - function easeInBack(t, b, c, d, s) { - if (s === undefined) { - s = 1.70158; - } - return c * (t /= d) * t * ((s + 1) * t - s) + b; - } - - /** - * Backwards easing out - * @memberOf fabric.util.ease - */ - function easeOutBack(t, b, c, d, s) { - if (s === undefined) { - s = 1.70158; - } - return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b; - } - - /** - * Backwards easing in and out - * @memberOf fabric.util.ease - */ - function easeInOutBack(t, b, c, d, s) { - if (s === undefined) { - s = 1.70158; + else { + parsedDim.width = viewBoxWidth; + parsedDim.height = viewBoxHeight; } - t /= d / 2; - if (t < 1) { - return c / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)) + b; + // default is to preserve aspect ratio + preserveAspectRatio = parsePreserveAspectRatioAttribute(preserveAspectRatio); + if (preserveAspectRatio.alignX !== 'none') { + //translate all container for the effect of Mid, Min, Max + if (preserveAspectRatio.meetOrSlice === 'meet') { + scaleY = scaleX = scaleX > scaleY ? scaleY : scaleX; + // calculate additional translation to move the viewbox + } + if (preserveAspectRatio.meetOrSlice === 'slice') { + scaleY = scaleX = scaleX > scaleY ? scaleX : scaleY; + // calculate additional translation to move the viewbox + } + widthDiff = parsedDim.width - viewBoxWidth * scaleX; + heightDiff = parsedDim.height - viewBoxHeight * scaleX; + if (preserveAspectRatio.alignX === 'Mid') { + widthDiff /= 2; + } + if (preserveAspectRatio.alignY === 'Mid') { + heightDiff /= 2; + } + if (preserveAspectRatio.alignX === 'Min') { + widthDiff = 0; + } + if (preserveAspectRatio.alignY === 'Min') { + heightDiff = 0; + } } - return c / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2) + b; - } - - /** - * Bouncing easing in - * @memberOf fabric.util.ease - */ - function easeInBounce(t, b, c, d) { - return c - easeOutBounce (d - t, 0, c, d) + b; - } - - /** - * Bouncing easing out - * @memberOf fabric.util.ease - */ - function easeOutBounce(t, b, c, d) { - if ((t /= d) < (1 / 2.75)) { - return c * (7.5625 * t * t) + b; + if (scaleX === 1 && + scaleY === 1 && + minX === 0 && + minY === 0 && + x === 0 && + y === 0) { + return parsedDim; } - else if (t < (2 / 2.75)) { - return c * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75) + b; + if ((x || y) && element.parentNode.nodeName !== '#document') { + translateMatrix = ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') '; } - else if (t < (2.5 / 2.75)) { - return c * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375) + b; + matrix = + translateMatrix + + ' matrix(' + + scaleX + + ' 0' + + ' 0 ' + + scaleY + + ' ' + + (minX * scaleX + widthDiff) + + ' ' + + (minY * scaleY + heightDiff) + + ') '; + // seems unused. + // parsedDim.viewboxTransform = parseTransformAttribute(matrix); + if (element.nodeName === 'svg') { + el = element.ownerDocument.createElementNS(svgNS, 'g'); + // element.firstChild != null + while (element.firstChild) { + el.appendChild(element.firstChild); + } + element.appendChild(el); } else { - return c * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375) + b; + el = element; + el.removeAttribute('x'); + el.removeAttribute('y'); + matrix = el.getAttribute('transform') + matrix; } - } - - /** - * Bouncing easing in and out - * @memberOf fabric.util.ease - */ - function easeInOutBounce(t, b, c, d) { - if (t < d / 2) { - return easeInBounce (t * 2, 0, c, d) * 0.5 + b; - } - return easeOutBounce(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b; - } - - /** - * Easing functions - * See Easing Equations by Robert Penner - * @namespace fabric.util.ease - */ - fabric.util.ease = { - - /** - * Quadratic easing in - * @memberOf fabric.util.ease - */ - easeInQuad: function(t, b, c, d) { - return c * (t /= d) * t + b; - }, - - /** - * Quadratic easing out - * @memberOf fabric.util.ease - */ - easeOutQuad: function(t, b, c, d) { - return -c * (t /= d) * (t - 2) + b; - }, - - /** - * Quadratic easing in and out - * @memberOf fabric.util.ease - */ - easeInOutQuad: function(t, b, c, d) { - t /= (d / 2); - if (t < 1) { - return c / 2 * t * t + b; - } - return -c / 2 * ((--t) * (t - 2) - 1) + b; - }, - - /** - * Cubic easing in - * @memberOf fabric.util.ease - */ - easeInCubic: function(t, b, c, d) { - return c * (t /= d) * t * t + b; - }, - - easeOutCubic: easeOutCubic, - easeInOutCubic: easeInOutCubic, - easeInQuart: easeInQuart, - easeOutQuart: easeOutQuart, - easeInOutQuart: easeInOutQuart, - easeInQuint: easeInQuint, - easeOutQuint: easeOutQuint, - easeInOutQuint: easeInOutQuint, - easeInSine: easeInSine, - easeOutSine: easeOutSine, - easeInOutSine: easeInOutSine, - easeInExpo: easeInExpo, - easeOutExpo: easeOutExpo, - easeInOutExpo: easeInOutExpo, - easeInCirc: easeInCirc, - easeOutCirc: easeOutCirc, - easeInOutCirc: easeInOutCirc, - easeInElastic: easeInElastic, - easeOutElastic: easeOutElastic, - easeInOutElastic: easeInOutElastic, - easeInBack: easeInBack, - easeOutBack: easeOutBack, - easeInOutBack: easeInOutBack, - easeInBounce: easeInBounce, - easeOutBounce: easeOutBounce, - easeInOutBounce: easeInOutBounce - }; - -})(); - + el.setAttribute('transform', matrix); + return parsedDim; +} -(function(global) { +//@ts-nocheck +function hasAncestorWithNodeName(element, nodeName) { + while (element && (element = element.parentNode)) { + if (element.nodeName && + nodeName.test(element.nodeName.replace('svg:', '')) && + !element.getAttribute('instantiated_by_use')) { + return true; + } + } + return false; +} - 'use strict'; +//@ts-nocheck +/** + * Transforms an array of svg elements to corresponding fabric.* instances + * @static + * @memberOf fabric + * @param {Array} elements Array of elements to parse + * @param {Function} callback Being passed an array of fabric instances (transformed from SVG elements) + * @param {Object} [options] Options object + * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. + */ +function parseElements(elements, callback, options, reviver, parsingOptions) { + new ElementsParser(elements, callback, options, reviver, parsingOptions).parse(); +} - /** - * @name fabric - * @namespace - */ +//@ts-nocheck +function parseUseDirectives(doc) { + let nodelist = getMultipleNodes(doc, ['use', 'svg:use']), i = 0; + while (nodelist.length && i < nodelist.length) { + const el = nodelist[i], xlinkAttribute = el.getAttribute('xlink:href') || el.getAttribute('href'); + if (xlinkAttribute === null) { + return; + } + var xlink = xlinkAttribute.slice(1), x = el.getAttribute('x') || 0, y = el.getAttribute('y') || 0, el2 = elementById(doc, xlink).cloneNode(true), currentTrans = (el2.getAttribute('transform') || '') + + ' translate(' + + x + + ', ' + + y + + ')', parentNode, oldLength = nodelist.length, attr, j, attrs, len, namespace = svgNS; + applyViewboxTransform(el2); + if (/^svg$/i.test(el2.nodeName)) { + const el3 = el2.ownerDocument.createElementNS(namespace, 'g'); + for (j = 0, attrs = el2.attributes, len = attrs.length; j < len; j++) { + attr = attrs.item(j); + el3.setAttributeNS(namespace, attr.nodeName, attr.nodeValue); + } + // el2.firstChild != null + while (el2.firstChild) { + el3.appendChild(el2.firstChild); + } + el2 = el3; + } + for (j = 0, attrs = el.attributes, len = attrs.length; j < len; j++) { + attr = attrs.item(j); + if (attr.nodeName === 'x' || + attr.nodeName === 'y' || + attr.nodeName === 'xlink:href' || + attr.nodeName === 'href') { + continue; + } + if (attr.nodeName === 'transform') { + currentTrans = attr.nodeValue + ' ' + currentTrans; + } + else { + el2.setAttribute(attr.nodeName, attr.nodeValue); + } + } + el2.setAttribute('transform', currentTrans); + el2.setAttribute('instantiated_by_use', '1'); + el2.removeAttribute('id'); + parentNode = el.parentNode; + parentNode.replaceChild(el2, el); + // some browsers do not shorten nodelist after replaceChild (IE8) + if (nodelist.length === oldLength) { + i++; + } + } +} - var fabric = global.fabric || (global.fabric = { }), - extend = fabric.util.object.extend, - clone = fabric.util.object.clone, - toFixed = fabric.util.toFixed, - parseUnit = fabric.util.parseUnit, - multiplyTransformMatrices = fabric.util.multiplyTransformMatrices, +//@ts-nocheck +/** + * Parses an SVG document, converts it to an array of corresponding fabric.* instances and passes them to a callback + * @static + * @function + * @memberOf fabric + * @param {SVGDocument} doc SVG document to parse + * @param {Function} callback Callback to call when parsing is finished; + * It's being passed an array of elements (parsed from a document). + * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. + * @param {Object} [parsingOptions] options for parsing document + * @param {String} [parsingOptions.crossOrigin] crossOrigin settings + * @param {AbortSignal} [parsingOptions.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + */ +function parseSVGDocument(doc, callback, reviver, parsingOptions) { + if (!doc) { + return; + } + if (parsingOptions && + parsingOptions.signal && + parsingOptions.signal.aborted) { + throw new Error('`options.signal` is in `aborted` state'); + } + parseUseDirectives(doc); + let svgUid = fabric$1.Object.__uid++, i, len, options = applyViewboxTransform(doc), descendants = Array.from(doc.getElementsByTagName('*')); + options.crossOrigin = parsingOptions && parsingOptions.crossOrigin; + options.svgUid = svgUid; + options.signal = parsingOptions && parsingOptions.signal; + if (descendants.length === 0 && isLikelyNode) { + // we're likely in node, where "o3-xml" library fails to gEBTN("*") + // https://github.com/ajaxorg/node-o3-xml/issues/21 + descendants = doc.selectNodes('//*[name(.)!="svg"]'); + const arr = []; + for (i = 0, len = descendants.length; i < len; i++) { + arr[i] = descendants[i]; + } + descendants = arr; + } + const elements = descendants.filter(function (el) { + applyViewboxTransform(el); + return (svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')) && + !hasAncestorWithNodeName(el, svgInvalidAncestorsRegEx)); // http://www.w3.org/TR/SVG/struct.html#DefsElement + }); + if (!elements || (elements && !elements.length)) { + callback && callback([], {}); + return; + } + const localClipPaths = {}; + descendants + .filter(function (el) { + return el.nodeName.replace('svg:', '') === 'clipPath'; + }) + .forEach(function (el) { + const id = el.getAttribute('id'); + localClipPaths[id] = Array.from(el.getElementsByTagName('*')).filter(function (el) { + return svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')); + }); + }); + gradientDefs[svgUid] = getGradientDefs(doc); + cssRules[svgUid] = getCSSRules(doc); + clipPaths[svgUid] = localClipPaths; + // Precedence of rules: style > class > attribute + parseElements(elements, function (instances, elements) { + if (callback) { + callback(instances, options, elements, descendants); + delete gradientDefs[svgUid]; + delete cssRules[svgUid]; + delete clipPaths[svgUid]; + } + }, Object.assign({}, options), reviver, parsingOptions); +} - svgValidTagNames = ['path', 'circle', 'polygon', 'polyline', 'ellipse', 'rect', 'line', - 'image', 'text'], - svgViewBoxElements = ['symbol', 'image', 'marker', 'pattern', 'view', 'svg'], - svgInvalidAncestors = ['pattern', 'defs', 'symbol', 'metadata', 'clipPath', 'mask', 'desc'], - svgValidParents = ['symbol', 'g', 'a', 'svg', 'clipPath', 'defs'], +//@ts-nocheck +/** + * Takes string corresponding to an SVG document, and parses it into a set of fabric objects + * @memberOf fabric + * @param {String} string + * @param {Function} callback + * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. + * @param {Object} [options] Object containing options for parsing + * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + */ +function loadSVGFromString(string, callback, reviver, options) { + const parser = new fabric$1.window.DOMParser(), doc = parser.parseFromString(string.trim(), 'text/xml'); + parseSVGDocument(doc.documentElement, function (results, _options, elements, allElements) { + callback(results, _options, elements, allElements); + }, reviver, options); +} - attributesMap = { - cx: 'left', - x: 'left', - r: 'radius', - cy: 'top', - y: 'top', - display: 'visible', - visibility: 'visible', - transform: 'transformMatrix', - 'fill-opacity': 'fillOpacity', - 'fill-rule': 'fillRule', - 'font-family': 'fontFamily', - 'font-size': 'fontSize', - 'font-style': 'fontStyle', - 'font-weight': 'fontWeight', - 'letter-spacing': 'charSpacing', - 'paint-order': 'paintFirst', - 'stroke-dasharray': 'strokeDashArray', - 'stroke-dashoffset': 'strokeDashOffset', - 'stroke-linecap': 'strokeLineCap', - 'stroke-linejoin': 'strokeLineJoin', - 'stroke-miterlimit': 'strokeMiterLimit', - 'stroke-opacity': 'strokeOpacity', - 'stroke-width': 'strokeWidth', - 'text-decoration': 'textDecoration', - 'text-anchor': 'textAnchor', - opacity: 'opacity', - 'clip-path': 'clipPath', - 'clip-rule': 'clipRule', - 'vector-effect': 'strokeUniform', - 'image-rendering': 'imageSmoothing', - }, +//@ts-nocheck +/** + * Takes url corresponding to an SVG document, and parses it into a set of fabric objects. + * Note that SVG is fetched via XMLHttpRequest, so it needs to conform to SOP (Same Origin Policy) + * @memberOf fabric + * @param {String} url + * @param {Function} callback + * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. + * @param {Object} [options] Object containing options for parsing + * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + */ +function loadSVGFromURL(url, callback, reviver, options) { + new request(url.replace(/^\n\s*/, '').trim(), { + method: 'get', + onComplete: onComplete, + signal: options && options.signal, + }); + function onComplete(r) { + const xml = r.responseXML; + if (!xml || !xml.documentElement) { + callback && callback(null); + return false; + } + parseSVGDocument(xml.documentElement, function (results, _options, elements, allElements) { + callback && callback(results, _options, elements, allElements); + }, reviver, options); + } +} - colorAttributes = { - stroke: 'strokeOpacity', - fill: 'fillOpacity' - }, +//@ts-nocheck +function selectorMatches(element, selector) { + let nodeName = element.nodeName, classNames = element.getAttribute('class'), id = element.getAttribute('id'), matcher, i; + // i check if a selector matches slicing away part from it. + // if i get empty string i should match + matcher = new RegExp('^' + nodeName, 'i'); + selector = selector.replace(matcher, ''); + if (id && selector.length) { + matcher = new RegExp('#' + id + '(?![a-zA-Z\\-]+)', 'i'); + selector = selector.replace(matcher, ''); + } + if (classNames && selector.length) { + classNames = classNames.split(' '); + for (i = classNames.length; i--;) { + matcher = new RegExp('\\.' + classNames[i] + '(?![a-zA-Z\\-]+)', 'i'); + selector = selector.replace(matcher, ''); + } + } + return selector.length === 0; +} - fSize = 'font-size', cPath = 'clip-path'; +//@ts-nocheck +function doesSomeParentMatch(element, selectors) { + let selector, parentMatching = true; + while (element.parentNode && + element.parentNode.nodeType === 1 && + selectors.length) { + if (parentMatching) { + selector = selectors.pop(); + } + element = element.parentNode; + parentMatching = selectorMatches(element, selector); + } + return selectors.length === 0; +} - fabric.svgValidTagNamesRegEx = getSvgRegex(svgValidTagNames); - fabric.svgViewBoxElementsRegEx = getSvgRegex(svgViewBoxElements); - fabric.svgInvalidAncestorsRegEx = getSvgRegex(svgInvalidAncestors); - fabric.svgValidParentsRegEx = getSvgRegex(svgValidParents); +//@ts-nocheck +/** + * @private + */ +function elementMatchesRule(element, selectors) { + let firstMatching, parentMatching = true; + //start from rightmost selector. + firstMatching = selectorMatches(element, selectors.pop()); + if (firstMatching && selectors.length) { + parentMatching = doesSomeParentMatch(element, selectors); + } + return firstMatching && parentMatching && selectors.length === 0; +} - fabric.cssRules = { }; - fabric.gradientDefs = { }; - fabric.clipPaths = { }; +//@ts-nocheck +/** + * @private + */ +function getGlobalStylesForElement(element, svgUid) { + const styles = {}; + for (const rule in cssRules[svgUid]) { + if (elementMatchesRule(element, rule.split(' '))) { + for (const property in cssRules[svgUid][rule]) { + styles[property] = cssRules[svgUid][rule][property]; + } + } + } + return styles; +} - function normalizeAttr(attr) { +//@ts-nocheck +function normalizeAttr(attr) { // transform attribute names if (attr in attributesMap) { - return attributesMap[attr]; + return attributesMap[attr]; } return attr; - } +} - function normalizeValue(attr, value, parentAttributes, fontSize) { - var isArray = Object.prototype.toString.call(value) === '[object Array]', - parsed; +//@ts-nocheck +function rotateMatrix(matrix, args) { + const cosValue = cos(args[0]), sinValue = sin(args[0]); + let x = 0, y = 0; + if (args.length === 3) { + x = args[1]; + y = args[2]; + } + matrix[0] = cosValue; + matrix[1] = sinValue; + matrix[2] = -sinValue; + matrix[3] = cosValue; + matrix[4] = x - (cosValue * x - sinValue * y); + matrix[5] = y - (sinValue * x + cosValue * y); +} + +//@ts-nocheck +function scaleMatrix(matrix, args) { + const multiplierX = args[0], multiplierY = args.length === 2 ? args[1] : args[0]; + matrix[0] = multiplierX; + matrix[3] = multiplierY; +} + +//@ts-nocheck +function skewMatrix(matrix, args, pos) { + matrix[pos] = Math.tan(degreesToRadians$1(args[0])); +} + +//@ts-nocheck +function translateMatrix(matrix, args) { + matrix[4] = args[0]; + if (args.length === 2) { + matrix[5] = args[1]; + } +} + +//@ts-nocheck +// == begin transform regexp +const number = reNum, skewX = '(?:(skewX)\\s*\\(\\s*(' + number + ')\\s*\\))', skewY = '(?:(skewY)\\s*\\(\\s*(' + number + ')\\s*\\))', rotate = '(?:(rotate)\\s*\\(\\s*(' + + number + + ')(?:' + + commaWsp + + '(' + + number + + ')' + + commaWsp + + '(' + + number + + '))?\\s*\\))', scale = '(?:(scale)\\s*\\(\\s*(' + + number + + ')(?:' + + commaWsp + + '(' + + number + + '))?\\s*\\))', translate = '(?:(translate)\\s*\\(\\s*(' + + number + + ')(?:' + + commaWsp + + '(' + + number + + '))?\\s*\\))', matrix = '(?:(matrix)\\s*\\(\\s*' + + '(' + + number + + ')' + + commaWsp + + '(' + + number + + ')' + + commaWsp + + '(' + + number + + ')' + + commaWsp + + '(' + + number + + ')' + + commaWsp + + '(' + + number + + ')' + + commaWsp + + '(' + + number + + ')' + + '\\s*\\))', transform = '(?:' + + matrix + + '|' + + translate + + '|' + + scale + + '|' + + rotate + + '|' + + skewX + + '|' + + skewY + + ')', transforms = '(?:' + transform + '(?:' + commaWsp + '*' + transform + ')*' + ')', transformList = '^\\s*(?:' + transforms + '?)\\s*$', +// http://www.w3.org/TR/SVG/coords.html#TransformAttribute +reTransformList = new RegExp(transformList), +// == end transform regexp +reTransform = new RegExp(transform, 'g'); +/** + * Parses "transform" attribute, returning an array of values + * @static + * @function + * @memberOf fabric + * @param {String} attributeValue String containing attribute value + * @return {Array} Array of 6 elements representing transformation matrix + */ +function parseTransformAttribute(attributeValue) { + // start with identity matrix + let matrix = iMatrix.concat(), matrices = []; + // return if no argument was given or + // an argument does not match transform attribute regexp + if (!attributeValue || + (attributeValue && !reTransformList.test(attributeValue))) { + return matrix; + } + attributeValue.replace(reTransform, function (match) { + const m = new RegExp(transform).exec(match).filter(function (match) { + // match !== '' && match != null + return !!match; + }), operation = m[1], args = m.slice(2).map(parseFloat); + switch (operation) { + case 'translate': + translateMatrix(matrix, args); + break; + case 'rotate': + args[0] = degreesToRadians$1(args[0]); + rotateMatrix(matrix, args); + break; + case 'scale': + scaleMatrix(matrix, args); + break; + case 'skewX': + skewMatrix(matrix, args, 2); + break; + case 'skewY': + skewMatrix(matrix, args, 1); + break; + case 'matrix': + matrix = args; + break; + } + // snapshot current matrix into matrices array + matrices.push(matrix.concat()); + // reset + matrix = iMatrix.concat(); + }); + let combinedMatrix = matrices[0]; + while (matrices.length > 1) { + matrices.shift(); + combinedMatrix = multiplyTransformMatrices(combinedMatrix, matrices[0]); + } + return combinedMatrix; +} +//@ts-nocheck +function normalizeValue(attr, value, parentAttributes, fontSize) { + let isArray = Array.isArray(value), parsed; if ((attr === 'fill' || attr === 'stroke') && value === 'none') { - value = ''; + value = ''; } else if (attr === 'strokeUniform') { - return (value === 'non-scaling-stroke'); + return value === 'non-scaling-stroke'; } else if (attr === 'strokeDashArray') { - if (value === 'none') { - value = null; - } - else { - value = value.replace(/,/g, ' ').split(/\s+/).map(parseFloat); - } + if (value === 'none') { + value = null; + } + else { + value = value.replace(/,/g, ' ').split(/\s+/).map(parseFloat); + } } else if (attr === 'transformMatrix') { - if (parentAttributes && parentAttributes.transformMatrix) { - value = multiplyTransformMatrices( - parentAttributes.transformMatrix, fabric.parseTransformAttribute(value)); - } - else { - value = fabric.parseTransformAttribute(value); - } + if (parentAttributes && parentAttributes.transformMatrix) { + value = multiplyTransformMatrices(parentAttributes.transformMatrix, parseTransformAttribute(value)); + } + else { + value = parseTransformAttribute(value); + } } else if (attr === 'visible') { - value = value !== 'none' && value !== 'hidden'; - // display=none on parent element always takes precedence over child element - if (parentAttributes && parentAttributes.visible === false) { - value = false; - } + value = value !== 'none' && value !== 'hidden'; + // display=none on parent element always takes precedence over child element + if (parentAttributes && parentAttributes.visible === false) { + value = false; + } } else if (attr === 'opacity') { - value = parseFloat(value); - if (parentAttributes && typeof parentAttributes.opacity !== 'undefined') { - value *= parentAttributes.opacity; - } + value = parseFloat(value); + if (parentAttributes && typeof parentAttributes.opacity !== 'undefined') { + value *= parentAttributes.opacity; + } } else if (attr === 'textAnchor' /* text-anchor */) { - value = value === 'start' ? 'left' : value === 'end' ? 'right' : 'center'; + value = value === 'start' ? 'left' : value === 'end' ? 'right' : 'center'; } else if (attr === 'charSpacing') { - // parseUnit returns px and we convert it to em - parsed = parseUnit(value, fontSize) / fontSize * 1000; + // parseUnit returns px and we convert it to em + parsed = (parseUnit(value, fontSize) / fontSize) * 1000; } else if (attr === 'paintFirst') { - var fillIndex = value.indexOf('fill'); - var strokeIndex = value.indexOf('stroke'); - var value = 'fill'; - if (fillIndex > -1 && strokeIndex > -1 && strokeIndex < fillIndex) { - value = 'stroke'; - } - else if (fillIndex === -1 && strokeIndex > -1) { - value = 'stroke'; - } + const fillIndex = value.indexOf('fill'); + const strokeIndex = value.indexOf('stroke'); + var value = 'fill'; + if (fillIndex > -1 && strokeIndex > -1 && strokeIndex < fillIndex) { + value = 'stroke'; + } + else if (fillIndex === -1 && strokeIndex > -1) { + value = 'stroke'; + } } else if (attr === 'href' || attr === 'xlink:href' || attr === 'font') { - return value; + return value; } else if (attr === 'imageSmoothing') { - return (value === 'optimizeQuality'); + return value === 'optimizeQuality'; } else { - parsed = isArray ? value.map(parseUnit) : parseUnit(value, fontSize); - } - - return (!isArray && isNaN(parsed) ? value : parsed); - } - - /** - * @private - */ - function getSvgRegex(arr) { - return new RegExp('^(' + arr.join('|') + ')\\b', 'i'); - } - - /** - * @private - * @param {Object} attributes Array of attributes to parse - */ - function _setStrokeFillOpacity(attributes) { - for (var attr in colorAttributes) { - - if (typeof attributes[colorAttributes[attr]] === 'undefined' || attributes[attr] === '') { - continue; - } - - if (typeof attributes[attr] === 'undefined') { - if (!fabric.Object.prototype[attr]) { - continue; - } - attributes[attr] = fabric.Object.prototype[attr]; - } - - if (attributes[attr].indexOf('url(') === 0) { - continue; - } - - var color = new fabric.Color(attributes[attr]); - attributes[attr] = color.setAlpha(toFixed(color.getAlpha() * attributes[colorAttributes[attr]], 2)).toRgba(); + parsed = isArray ? value.map(parseUnit) : parseUnit(value, fontSize); } - return attributes; - } + return !isArray && isNaN(parsed) ? value : parsed; +} - /** - * @private - */ - function _getMultipleNodes(doc, nodeNames) { - var nodeName, nodeArray = [], nodeList, i, len; - for (i = 0, len = nodeNames.length; i < len; i++) { - nodeName = nodeNames[i]; - nodeList = doc.getElementsByTagName(nodeName); - nodeArray = nodeArray.concat(Array.prototype.slice.call(nodeList)); +//@ts-nocheck +/** + * Parses a short font declaration, building adding its properties to a style object + * @static + * @function + * @memberOf fabric + * @param {String} value font declaration + * @param {Object} oStyle definition + */ +function parseFontDeclaration(value, oStyle) { + const match = value.match(reFontDeclaration); + if (!match) { + return; } - return nodeArray; - } - - /** - * Parses "transform" attribute, returning an array of values - * @static - * @function - * @memberOf fabric - * @param {String} attributeValue String containing attribute value - * @return {Array} Array of 6 elements representing transformation matrix - */ - fabric.parseTransformAttribute = (function() { - function rotateMatrix(matrix, args) { - var cos = fabric.util.cos(args[0]), sin = fabric.util.sin(args[0]), - x = 0, y = 0; - if (args.length === 3) { - x = args[1]; - y = args[2]; - } - - matrix[0] = cos; - matrix[1] = sin; - matrix[2] = -sin; - matrix[3] = cos; - matrix[4] = x - (cos * x - sin * y); - matrix[5] = y - (sin * x + cos * y); + const fontStyle = match[1], + // font variant is not used + // fontVariant = match[2], + fontWeight = match[3], fontSize = match[4], lineHeight = match[5], fontFamily = match[6]; + if (fontStyle) { + oStyle.fontStyle = fontStyle; } - - function scaleMatrix(matrix, args) { - var multiplierX = args[0], - multiplierY = (args.length === 2) ? args[1] : args[0]; - - matrix[0] = multiplierX; - matrix[3] = multiplierY; + if (fontWeight) { + oStyle.fontWeight = isNaN(parseFloat(fontWeight)) + ? fontWeight + : parseFloat(fontWeight); } - - function skewMatrix(matrix, args, pos) { - matrix[pos] = Math.tan(fabric.util.degreesToRadians(args[0])); + if (fontSize) { + oStyle.fontSize = parseUnit(fontSize); } - - function translateMatrix(matrix, args) { - matrix[4] = args[0]; - if (args.length === 2) { - matrix[5] = args[1]; - } + if (fontFamily) { + oStyle.fontFamily = fontFamily; } - - // identity matrix - var iMatrix = fabric.iMatrix, - - // == begin transform regexp - number = fabric.reNum, - - commaWsp = fabric.commaWsp, - - skewX = '(?:(skewX)\\s*\\(\\s*(' + number + ')\\s*\\))', - - skewY = '(?:(skewY)\\s*\\(\\s*(' + number + ')\\s*\\))', - - rotate = '(?:(rotate)\\s*\\(\\s*(' + number + ')(?:' + - commaWsp + '(' + number + ')' + - commaWsp + '(' + number + '))?\\s*\\))', - - scale = '(?:(scale)\\s*\\(\\s*(' + number + ')(?:' + - commaWsp + '(' + number + '))?\\s*\\))', - - translate = '(?:(translate)\\s*\\(\\s*(' + number + ')(?:' + - commaWsp + '(' + number + '))?\\s*\\))', - - matrix = '(?:(matrix)\\s*\\(\\s*' + - '(' + number + ')' + commaWsp + - '(' + number + ')' + commaWsp + - '(' + number + ')' + commaWsp + - '(' + number + ')' + commaWsp + - '(' + number + ')' + commaWsp + - '(' + number + ')' + - '\\s*\\))', - - transform = '(?:' + - matrix + '|' + - translate + '|' + - scale + '|' + - rotate + '|' + - skewX + '|' + - skewY + - ')', - - transforms = '(?:' + transform + '(?:' + commaWsp + '*' + transform + ')*' + ')', - - transformList = '^\\s*(?:' + transforms + '?)\\s*$', - - // http://www.w3.org/TR/SVG/coords.html#TransformAttribute - reTransformList = new RegExp(transformList), - // == end transform regexp - - reTransform = new RegExp(transform, 'g'); - - return function(attributeValue) { - - // start with identity matrix - var matrix = iMatrix.concat(), - matrices = []; - - // return if no argument was given or - // an argument does not match transform attribute regexp - if (!attributeValue || (attributeValue && !reTransformList.test(attributeValue))) { - return matrix; - } - - attributeValue.replace(reTransform, function(match) { - - var m = new RegExp(transform).exec(match).filter(function (match) { - // match !== '' && match != null - return (!!match); - }), - operation = m[1], - args = m.slice(2).map(parseFloat); - - switch (operation) { - case 'translate': - translateMatrix(matrix, args); - break; - case 'rotate': - args[0] = fabric.util.degreesToRadians(args[0]); - rotateMatrix(matrix, args); - break; - case 'scale': - scaleMatrix(matrix, args); - break; - case 'skewX': - skewMatrix(matrix, args, 2); - break; - case 'skewY': - skewMatrix(matrix, args, 1); - break; - case 'matrix': - matrix = args; - break; - } - - // snapshot current matrix into matrices array - matrices.push(matrix.concat()); - // reset - matrix = iMatrix.concat(); - }); - - var combinedMatrix = matrices[0]; - while (matrices.length > 1) { - matrices.shift(); - combinedMatrix = fabric.util.multiplyTransformMatrices(combinedMatrix, matrices[0]); - } - return combinedMatrix; - }; - })(); - - /** - * @private - */ - function parseStyleString(style, oStyle) { - var attr, value; - style.replace(/;\s*$/, '').split(';').forEach(function (chunk) { - var pair = chunk.split(':'); - - attr = pair[0].trim().toLowerCase(); - value = pair[1].trim(); - - oStyle[attr] = value; - }); - } - - /** - * @private - */ - function parseStyleObject(style, oStyle) { - var attr, value; - for (var prop in style) { - if (typeof style[prop] === 'undefined') { - continue; - } - - attr = prop.toLowerCase(); - value = style[prop]; - - oStyle[attr] = value; + if (lineHeight) { + oStyle.lineHeight = lineHeight === 'normal' ? 1 : lineHeight; } - } +} - /** - * @private - */ - function getGlobalStylesForElement(element, svgUid) { - var styles = { }; - for (var rule in fabric.cssRules[svgUid]) { - if (elementMatchesRule(element, rule.split(' '))) { - for (var property in fabric.cssRules[svgUid][rule]) { - styles[property] = fabric.cssRules[svgUid][rule][property]; +//@ts-nocheck +function parseStyleObject(style, oStyle) { + let attr, value; + for (const prop in style) { + if (typeof style[prop] === 'undefined') { + continue; } - } - } - return styles; - } - - /** - * @private - */ - function elementMatchesRule(element, selectors) { - var firstMatching, parentMatching = true; - //start from rightmost selector. - firstMatching = selectorMatches(element, selectors.pop()); - if (firstMatching && selectors.length) { - parentMatching = doesSomeParentMatch(element, selectors); + attr = prop.toLowerCase(); + value = style[prop]; + oStyle[attr] = value; } - return firstMatching && parentMatching && (selectors.length === 0); - } +} - function doesSomeParentMatch(element, selectors) { - var selector, parentMatching = true; - while (element.parentNode && element.parentNode.nodeType === 1 && selectors.length) { - if (parentMatching) { - selector = selectors.pop(); - } - element = element.parentNode; - parentMatching = selectorMatches(element, selector); - } - return selectors.length === 0; - } +//@ts-nocheck +function parseStyleString(style, oStyle) { + let attr, value; + style + .replace(/;\s*$/, '') + .split(';') + .forEach(function (chunk) { + const pair = chunk.split(':'); + attr = pair[0].trim().toLowerCase(); + value = pair[1].trim(); + oStyle[attr] = value; + }); +} - /** - * @private - */ - function selectorMatches(element, selector) { - var nodeName = element.nodeName, - classNames = element.getAttribute('class'), - id = element.getAttribute('id'), matcher, i; - // i check if a selector matches slicing away part from it. - // if i get empty string i should match - matcher = new RegExp('^' + nodeName, 'i'); - selector = selector.replace(matcher, ''); - if (id && selector.length) { - matcher = new RegExp('#' + id + '(?![a-zA-Z\\-]+)', 'i'); - selector = selector.replace(matcher, ''); - } - if (classNames && selector.length) { - classNames = classNames.split(' '); - for (i = classNames.length; i--;) { - matcher = new RegExp('\\.' + classNames[i] + '(?![a-zA-Z\\-]+)', 'i'); - selector = selector.replace(matcher, ''); - } +//@ts-nocheck +/** + * Parses "style" attribute, retuning an object with values + * @static + * @memberOf fabric + * @param {SVGElement} element Element to parse + * @return {Object} Objects with values parsed from style attribute of an element + */ +function parseStyleAttribute(element) { + const oStyle = {}, style = element.getAttribute('style'); + if (!style) { + return oStyle; } - return selector.length === 0; - } - - /** - * @private - * to support IE8 missing getElementById on SVGdocument and on node xmlDOM - */ - function elementById(doc, id) { - var el; - doc.getElementById && (el = doc.getElementById(id)); - if (el) { - return el; + if (typeof style === 'string') { + parseStyleString(style, oStyle); } - var node, i, len, nodelist = doc.getElementsByTagName('*'); - for (i = 0, len = nodelist.length; i < len; i++) { - node = nodelist[i]; - if (id === node.getAttribute('id')) { - return node; - } + else { + parseStyleObject(style, oStyle); } - } - - /** - * @private - */ - function parseUseDirectives(doc) { - var nodelist = _getMultipleNodes(doc, ['use', 'svg:use']), i = 0; - while (nodelist.length && i < nodelist.length) { - var el = nodelist[i], - xlinkAttribute = el.getAttribute('xlink:href') || el.getAttribute('href'); - - if (xlinkAttribute === null) { - return; - } - - var xlink = xlinkAttribute.substr(1), - x = el.getAttribute('x') || 0, - y = el.getAttribute('y') || 0, - el2 = elementById(doc, xlink).cloneNode(true), - currentTrans = (el2.getAttribute('transform') || '') + ' translate(' + x + ', ' + y + ')', - parentNode, - oldLength = nodelist.length, attr, - j, - attrs, - len, - namespace = fabric.svgNS; - - applyViewboxTransform(el2); - if (/^svg$/i.test(el2.nodeName)) { - var el3 = el2.ownerDocument.createElementNS(namespace, 'g'); - for (j = 0, attrs = el2.attributes, len = attrs.length; j < len; j++) { - attr = attrs.item(j); - el3.setAttributeNS(namespace, attr.nodeName, attr.nodeValue); - } - // el2.firstChild != null - while (el2.firstChild) { - el3.appendChild(el2.firstChild); - } - el2 = el3; - } + return oStyle; +} - for (j = 0, attrs = el.attributes, len = attrs.length; j < len; j++) { - attr = attrs.item(j); - if (attr.nodeName === 'x' || attr.nodeName === 'y' || - attr.nodeName === 'xlink:href' || attr.nodeName === 'href') { - continue; +//@ts-nocheck +/** + * @private + * @param {Object} attributes Array of attributes to parse + */ +function setStrokeFillOpacity(attributes) { + for (const attr in colorAttributes) { + if (typeof attributes[colorAttributes[attr]] === 'undefined' || + attributes[attr] === '') { + continue; } - - if (attr.nodeName === 'transform') { - currentTrans = attr.nodeValue + ' ' + currentTrans; + if (typeof attributes[attr] === 'undefined') { + if (!fabric$1.Object.prototype[attr]) { + continue; + } + attributes[attr] = fabric$1.Object.prototype[attr]; } - else { - el2.setAttribute(attr.nodeName, attr.nodeValue); + if (attributes[attr].indexOf('url(') === 0) { + continue; } - } - - el2.setAttribute('transform', currentTrans); - el2.setAttribute('instantiated_by_use', '1'); - el2.removeAttribute('id'); - parentNode = el.parentNode; - parentNode.replaceChild(el2, el); - // some browsers do not shorten nodelist after replaceChild (IE8) - if (nodelist.length === oldLength) { - i++; - } - } - } - - // http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute - // matches, e.g.: +14.56e-12, etc. - var reViewBoxAttrValue = new RegExp( - '^' + - '\\s*(' + fabric.reNum + '+)\\s*,?' + - '\\s*(' + fabric.reNum + '+)\\s*,?' + - '\\s*(' + fabric.reNum + '+)\\s*,?' + - '\\s*(' + fabric.reNum + '+)\\s*' + - '$' - ); - - /** - * Add a element that envelop all child elements and makes the viewbox transformMatrix descend on all elements - */ - function applyViewboxTransform(element) { - if (!fabric.svgViewBoxElementsRegEx.test(element.nodeName)) { - return {}; - } - var viewBoxAttr = element.getAttribute('viewBox'), - scaleX = 1, - scaleY = 1, - minX = 0, - minY = 0, - viewBoxWidth, viewBoxHeight, matrix, el, - widthAttr = element.getAttribute('width'), - heightAttr = element.getAttribute('height'), - x = element.getAttribute('x') || 0, - y = element.getAttribute('y') || 0, - preserveAspectRatio = element.getAttribute('preserveAspectRatio') || '', - missingViewBox = (!viewBoxAttr || !(viewBoxAttr = viewBoxAttr.match(reViewBoxAttrValue))), - missingDimAttr = (!widthAttr || !heightAttr || widthAttr === '100%' || heightAttr === '100%'), - toBeParsed = missingViewBox && missingDimAttr, - parsedDim = { }, translateMatrix = '', widthDiff = 0, heightDiff = 0; - - parsedDim.width = 0; - parsedDim.height = 0; - parsedDim.toBeParsed = toBeParsed; - - if (missingViewBox) { - if (((x || y) && element.parentNode && element.parentNode.nodeName !== '#document')) { - translateMatrix = ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') '; - matrix = (element.getAttribute('transform') || '') + translateMatrix; - element.setAttribute('transform', matrix); - element.removeAttribute('x'); - element.removeAttribute('y'); - } - } - - if (toBeParsed) { - return parsedDim; + const color = new Color(attributes[attr]); + attributes[attr] = color + .setAlpha(toFixed(color.getAlpha() * attributes[colorAttributes[attr]], 2)) + .toRgba(); } + return attributes; +} - if (missingViewBox) { - parsedDim.width = parseUnit(widthAttr); - parsedDim.height = parseUnit(heightAttr); - // set a transform for elements that have x y and are inner(only) SVGs - return parsedDim; - } - minX = -parseFloat(viewBoxAttr[1]); - minY = -parseFloat(viewBoxAttr[2]); - viewBoxWidth = parseFloat(viewBoxAttr[3]); - viewBoxHeight = parseFloat(viewBoxAttr[4]); - parsedDim.minX = minX; - parsedDim.minY = minY; - parsedDim.viewBoxWidth = viewBoxWidth; - parsedDim.viewBoxHeight = viewBoxHeight; - if (!missingDimAttr) { - parsedDim.width = parseUnit(widthAttr); - parsedDim.height = parseUnit(heightAttr); - scaleX = parsedDim.width / viewBoxWidth; - scaleY = parsedDim.height / viewBoxHeight; +//@ts-nocheck +/** + * Returns an object of attributes' name/value, given element and an array of attribute names; + * Parses parent "g" nodes recursively upwards. + * @param {DOMElement} element Element to parse + * @param {Array} attributes Array of attributes to parse + * @return {Object} object containing parsed attributes' names/values + */ +function parseAttributes(element, attributes, svgUid) { + if (!element) { + return; } - else { - parsedDim.width = viewBoxWidth; - parsedDim.height = viewBoxHeight; + let value, parentAttributes = {}, fontSize, parentFontSize; + if (typeof svgUid === 'undefined') { + svgUid = element.getAttribute('svgUid'); } - - // default is to preserve aspect ratio - preserveAspectRatio = fabric.util.parsePreserveAspectRatioAttribute(preserveAspectRatio); - if (preserveAspectRatio.alignX !== 'none') { - //translate all container for the effect of Mid, Min, Max - if (preserveAspectRatio.meetOrSlice === 'meet') { - scaleY = scaleX = (scaleX > scaleY ? scaleY : scaleX); - // calculate additional translation to move the viewbox - } - if (preserveAspectRatio.meetOrSlice === 'slice') { - scaleY = scaleX = (scaleX > scaleY ? scaleX : scaleY); - // calculate additional translation to move the viewbox - } - widthDiff = parsedDim.width - viewBoxWidth * scaleX; - heightDiff = parsedDim.height - viewBoxHeight * scaleX; - if (preserveAspectRatio.alignX === 'Mid') { - widthDiff /= 2; - } - if (preserveAspectRatio.alignY === 'Mid') { - heightDiff /= 2; - } - if (preserveAspectRatio.alignX === 'Min') { - widthDiff = 0; - } - if (preserveAspectRatio.alignY === 'Min') { - heightDiff = 0; - } + // if there's a parent container (`g` or `a` or `symbol` node), parse its attributes recursively upwards + if (element.parentNode && + svgValidParentsRegEx.test(element.parentNode.nodeName)) { + parentAttributes = parseAttributes(element.parentNode, attributes, svgUid); } - - if (scaleX === 1 && scaleY === 1 && minX === 0 && minY === 0 && x === 0 && y === 0) { - return parsedDim; + let ownAttributes = attributes.reduce(function (memo, attr) { + value = element.getAttribute(attr); + if (value) { + // eslint-disable-line + memo[attr] = value; + } + return memo; + }, {}); + // add values parsed from style, which take precedence over attributes + // (see: http://www.w3.org/TR/SVG/styling.html#UsingPresentationAttributes) + const cssAttrs = Object.assign(getGlobalStylesForElement(element, svgUid), parseStyleAttribute(element)); + ownAttributes = Object.assign(ownAttributes, cssAttrs); + if (cssAttrs[cPath]) { + element.setAttribute(cPath, cssAttrs[cPath]); } - if ((x || y) && element.parentNode.nodeName !== '#document') { - translateMatrix = ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') '; + fontSize = parentFontSize = + parentAttributes.fontSize || DEFAULT_SVG_FONT_SIZE; + if (ownAttributes[fSize]) { + // looks like the minimum should be 9px when dealing with ems. this is what looks like in browsers. + ownAttributes[fSize] = fontSize = parseUnit(ownAttributes[fSize], parentFontSize); } - - matrix = translateMatrix + ' matrix(' + scaleX + - ' 0' + - ' 0 ' + - scaleY + ' ' + - (minX * scaleX + widthDiff) + ' ' + - (minY * scaleY + heightDiff) + ') '; - // seems unused. - // parsedDim.viewboxTransform = fabric.parseTransformAttribute(matrix); - if (element.nodeName === 'svg') { - el = element.ownerDocument.createElementNS(fabric.svgNS, 'g'); - // element.firstChild != null - while (element.firstChild) { - el.appendChild(element.firstChild); - } - element.appendChild(el); + let normalizedAttr, normalizedValue, normalizedStyle = {}; + for (const attr in ownAttributes) { + normalizedAttr = normalizeAttr(attr); + normalizedValue = normalizeValue(normalizedAttr, ownAttributes[attr], parentAttributes, fontSize); + normalizedStyle[normalizedAttr] = normalizedValue; } - else { - el = element; - el.removeAttribute('x'); - el.removeAttribute('y'); - matrix = el.getAttribute('transform') + matrix; + if (normalizedStyle && normalizedStyle.font) { + parseFontDeclaration(normalizedStyle.font, normalizedStyle); } - el.setAttribute('transform', matrix); - return parsedDim; - } + const mergedAttrs = Object.assign(parentAttributes, normalizedStyle); + return svgValidParentsRegEx.test(element.nodeName) + ? mergedAttrs + : setStrokeFillOpacity(mergedAttrs); +} - function hasAncestorWithNodeName(element, nodeName) { - while (element && (element = element.parentNode)) { - if (element.nodeName && nodeName.test(element.nodeName.replace('svg:', '')) - && !element.getAttribute('instantiated_by_use')) { - return true; - } +//@ts-nocheck +/** + * Parses "points" attribute, returning an array of values + * @static + * @memberOf fabric + * @param {String} points points attribute string + * @return {Array} array of points + */ +function parsePointsAttribute(points) { + // points attribute is required and must not be empty + if (!points) { + return null; } - return false; - } - - /** - * Parses an SVG document, converts it to an array of corresponding fabric.* instances and passes them to a callback - * @static - * @function - * @memberOf fabric - * @param {SVGDocument} doc SVG document to parse - * @param {Function} callback Callback to call when parsing is finished; - * It's being passed an array of elements (parsed from a document). - * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. - * @param {Object} [parsingOptions] options for parsing document - * @param {String} [parsingOptions.crossOrigin] crossOrigin settings - */ - fabric.parseSVGDocument = function(doc, callback, reviver, parsingOptions) { - if (!doc) { - return; + // replace commas with whitespace and remove bookending whitespace + points = points.replace(/,/g, ' ').trim(); + points = points.split(/\s+/); + let parsedPoints = [], i, len; + for (i = 0, len = points.length; i < len; i += 2) { + parsedPoints.push({ + x: parseFloat(points[i]), + y: parseFloat(points[i + 1]), + }); } + // odd number of points is an error + // if (parsedPoints.length % 2 !== 0) { + // return null; + // } + return parsedPoints; +} - parseUseDirectives(doc); - - var svgUid = fabric.Object.__uid++, i, len, - options = applyViewboxTransform(doc), - descendants = fabric.util.toArray(doc.getElementsByTagName('*')); - options.crossOrigin = parsingOptions && parsingOptions.crossOrigin; - options.svgUid = svgUid; +//@ts-nocheck +Object.assign(fabric$1, { + cssRules, + gradientDefs, + clipPaths, + parseTransformAttribute, + parseSVGDocument, + parseFontDeclaration, + getGradientDefs, + parseAttributes, + parseElements, + parseStyleAttribute, + parsePointsAttribute, + getCSSRules, + loadSVGFromURL, + loadSVGFromString, + ElementsParser, +}); - if (descendants.length === 0 && fabric.isLikelyNode) { - // we're likely in node, where "o3-xml" library fails to gEBTN("*") - // https://github.com/ajaxorg/node-o3-xml/issues/21 - descendants = doc.selectNodes('//*[name(.)!="svg"]'); - var arr = []; - for (i = 0, len = descendants.length; i < len; i++) { - arr[i] = descendants[i]; - } - descendants = arr; +//@ts-nocheck +/** + * **Assuming `T`, `A`, `B` are points on the same line**, + * check if `T` is contained in `[A, B]` by comparing the direction of the vectors from `T` to `A` and `B` + * @param T + * @param A + * @param B + * @returns true if `T` is contained + */ +const isContainedInInterval = (T, A, B) => { + const TA = new Point(T).subtract(A); + const TB = new Point(T).subtract(B); + return (Math.sign(TA.x) !== Math.sign(TB.x) || Math.sign(TA.y) !== Math.sign(TB.y)); +}; +class Intersection { + constructor(status) { + this.status = status; + this.points = []; } - - var elements = descendants.filter(function(el) { - applyViewboxTransform(el); - return fabric.svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')) && - !hasAncestorWithNodeName(el, fabric.svgInvalidAncestorsRegEx); // http://www.w3.org/TR/SVG/struct.html#DefsElement - }); - if (!elements || (elements && !elements.length)) { - callback && callback([], {}); - return; - } - var clipPaths = { }; - descendants.filter(function(el) { - return el.nodeName.replace('svg:', '') === 'clipPath'; - }).forEach(function(el) { - var id = el.getAttribute('id'); - clipPaths[id] = fabric.util.toArray(el.getElementsByTagName('*')).filter(function(el) { - return fabric.svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')); - }); - }); - fabric.gradientDefs[svgUid] = fabric.getGradientDefs(doc); - fabric.cssRules[svgUid] = fabric.getCSSRules(doc); - fabric.clipPaths[svgUid] = clipPaths; - // Precedence of rules: style > class > attribute - fabric.parseElements(elements, function(instances, elements) { - if (callback) { - callback(instances, options, elements, descendants); - delete fabric.gradientDefs[svgUid]; - delete fabric.cssRules[svgUid]; - delete fabric.clipPaths[svgUid]; - } - }, clone(options), reviver, parsingOptions); - }; - - function recursivelyParseGradientsXlink(doc, gradient) { - var gradientsAttrs = ['gradientTransform', 'x1', 'x2', 'y1', 'y2', 'gradientUnits', 'cx', 'cy', 'r', 'fx', 'fy'], - xlinkAttr = 'xlink:href', - xLink = gradient.getAttribute(xlinkAttr).substr(1), - referencedGradient = elementById(doc, xLink); - if (referencedGradient && referencedGradient.getAttribute(xlinkAttr)) { - recursivelyParseGradientsXlink(doc, referencedGradient); + /** + * + * @param {Point} point + * @returns + */ + contains(point) { + return this.points.some((p) => p.eq(point)); } - gradientsAttrs.forEach(function(attr) { - if (referencedGradient && !gradient.hasAttribute(attr) && referencedGradient.hasAttribute(attr)) { - gradient.setAttribute(attr, referencedGradient.getAttribute(attr)); - } - }); - if (!gradient.children.length) { - var referenceClone = referencedGradient.cloneNode(true); - while (referenceClone.firstChild) { - gradient.appendChild(referenceClone.firstChild); - } + /** + * Appends points of intersection + * @param {...Point[]} points + * @return {Intersection} thisArg + * @chainable + */ + append(...points) { + this.points = this.points.concat(points.filter((point) => { + return !this.contains(point); + })); + return this; } - gradient.removeAttribute(xlinkAttr); - } - - var reFontDeclaration = new RegExp( - '(normal|italic)?\\s*(normal|small-caps)?\\s*' + - '(normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900)?\\s*(' + - fabric.reNum + - '(?:px|cm|mm|em|pt|pc|in)*)(?:\\/(normal|' + fabric.reNum + '))?\\s+(.*)'); - - extend(fabric, { /** - * Parses a short font declaration, building adding its properties to a style object + * Checks if a line intersects another * @static - * @function - * @memberOf fabric - * @param {String} value font declaration - * @param {Object} oStyle definition - */ - parseFontDeclaration: function(value, oStyle) { - var match = value.match(reFontDeclaration); - - if (!match) { - return; - } - var fontStyle = match[1], - // font variant is not used - // fontVariant = match[2], - fontWeight = match[3], - fontSize = match[4], - lineHeight = match[5], - fontFamily = match[6]; - - if (fontStyle) { - oStyle.fontStyle = fontStyle; - } - if (fontWeight) { - oStyle.fontWeight = isNaN(parseFloat(fontWeight)) ? fontWeight : parseFloat(fontWeight); - } - if (fontSize) { - oStyle.fontSize = parseUnit(fontSize); - } - if (fontFamily) { - oStyle.fontFamily = fontFamily; - } - if (lineHeight) { - oStyle.lineHeight = lineHeight === 'normal' ? 1 : lineHeight; - } - }, - - /** - * Parses an SVG document, returning all of the gradient declarations found in it - * @static - * @function - * @memberOf fabric - * @param {SVGDocument} doc SVG document to parse - * @return {Object} Gradient definitions; key corresponds to element id, value -- to gradient definition element - */ - getGradientDefs: function(doc) { - var tagArray = [ - 'linearGradient', - 'radialGradient', - 'svg:linearGradient', - 'svg:radialGradient'], - elList = _getMultipleNodes(doc, tagArray), - el, j = 0, gradientDefs = { }; - j = elList.length; - while (j--) { - el = elList[j]; - if (el.getAttribute('xlink:href')) { - recursivelyParseGradientsXlink(doc, el); + * @param {Point} a1 + * @param {Point} a2 + * @param {Point} b1 + * @param {Point} b2 + * @param {boolean} [aInfinite=true] check segment intersection by passing `false` + * @param {boolean} [bInfinite=true] check segment intersection by passing `false` + * @return {Intersection} + */ + static intersectLineLine(a1, a2, b1, b2, aInfinite = true, bInfinite = true) { + let result; + const uaT = (b2.x - b1.x) * (a1.y - b1.y) - (b2.y - b1.y) * (a1.x - b1.x), ubT = (a2.x - a1.x) * (a1.y - b1.y) - (a2.y - a1.y) * (a1.x - b1.x), uB = (b2.y - b1.y) * (a2.x - a1.x) - (b2.x - b1.x) * (a2.y - a1.y); + if (uB !== 0) { + const ua = uaT / uB, ub = ubT / uB; + if ((aInfinite || (0 <= ua && ua <= 1)) && + (bInfinite || (0 <= ub && ub <= 1))) { + result = new Intersection('Intersection'); + result.append(new Point(a1.x + ua * (a2.x - a1.x), a1.y + ua * (a2.y - a1.y))); + } + else { + result = new Intersection(); + } } - gradientDefs[el.getAttribute('id')] = el; - } - return gradientDefs; - }, - + else { + if (uaT === 0 || ubT === 0) { + const segmentsCoincide = aInfinite || + bInfinite || + isContainedInInterval(a1, b1, b2) || + isContainedInInterval(a2, b1, b2) || + isContainedInInterval(b1, a1, a2) || + isContainedInInterval(b2, a1, a2); + result = new Intersection(segmentsCoincide ? 'Coincident' : undefined); + } + else { + result = new Intersection('Parallel'); + } + } + return result; + } /** - * Returns an object of attributes' name/value, given element and an array of attribute names; - * Parses parent "g" nodes recursively upwards. + * Checks if a segment intersects a line + * @see {@link intersectLineLine} for line intersection * @static - * @memberOf fabric - * @param {DOMElement} element Element to parse - * @param {Array} attributes Array of attributes to parse - * @return {Object} object containing parsed attributes' names/values + * @param {Point} s1 boundary point of segment + * @param {Point} s2 other boundary point of segment + * @param {Point} l1 point on line + * @param {Point} l2 other point on line + * @return {Intersection} */ - parseAttributes: function(element, attributes, svgUid) { - - if (!element) { - return; - } - - var value, - parentAttributes = { }, - fontSize, parentFontSize; - - if (typeof svgUid === 'undefined') { - svgUid = element.getAttribute('svgUid'); - } - // if there's a parent container (`g` or `a` or `symbol` node), parse its attributes recursively upwards - if (element.parentNode && fabric.svgValidParentsRegEx.test(element.parentNode.nodeName)) { - parentAttributes = fabric.parseAttributes(element.parentNode, attributes, svgUid); - } - - var ownAttributes = attributes.reduce(function(memo, attr) { - value = element.getAttribute(attr); - if (value) { // eslint-disable-line - memo[attr] = value; - } - return memo; - }, { }); - // add values parsed from style, which take precedence over attributes - // (see: http://www.w3.org/TR/SVG/styling.html#UsingPresentationAttributes) - var cssAttrs = extend( - getGlobalStylesForElement(element, svgUid), - fabric.parseStyleAttribute(element) - ); - ownAttributes = extend( - ownAttributes, - cssAttrs - ); - if (cssAttrs[cPath]) { - element.setAttribute(cPath, cssAttrs[cPath]); - } - fontSize = parentFontSize = parentAttributes.fontSize || fabric.Text.DEFAULT_SVG_FONT_SIZE; - if (ownAttributes[fSize]) { - // looks like the minimum should be 9px when dealing with ems. this is what looks like in browsers. - ownAttributes[fSize] = fontSize = parseUnit(ownAttributes[fSize], parentFontSize); - } - - var normalizedAttr, normalizedValue, normalizedStyle = {}; - for (var attr in ownAttributes) { - normalizedAttr = normalizeAttr(attr); - normalizedValue = normalizeValue(normalizedAttr, ownAttributes[attr], parentAttributes, fontSize); - normalizedStyle[normalizedAttr] = normalizedValue; - } - if (normalizedStyle && normalizedStyle.font) { - fabric.parseFontDeclaration(normalizedStyle.font, normalizedStyle); - } - var mergedAttrs = extend(parentAttributes, normalizedStyle); - return fabric.svgValidParentsRegEx.test(element.nodeName) ? mergedAttrs : _setStrokeFillOpacity(mergedAttrs); - }, - + static intersectSegmentLine(s1, s2, l1, l2) { + return Intersection.intersectLineLine(s1, s2, l1, l2, false, true); + } /** - * Transforms an array of svg elements to corresponding fabric.* instances + * Checks if a segment intersects another + * @see {@link intersectLineLine} for line intersection * @static - * @memberOf fabric - * @param {Array} elements Array of elements to parse - * @param {Function} callback Being passed an array of fabric instances (transformed from SVG elements) - * @param {Object} [options] Options object - * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. + * @param {Point} a1 boundary point of segment + * @param {Point} a2 other boundary point of segment + * @param {Point} b1 boundary point of segment + * @param {Point} b2 other boundary point of segment + * @return {Intersection} */ - parseElements: function(elements, callback, options, reviver, parsingOptions) { - new fabric.ElementsParser(elements, callback, options, reviver, parsingOptions).parse(); - }, - + static intersectSegmentSegment(a1, a2, b1, b2) { + return Intersection.intersectLineLine(a1, a2, b1, b2, false, false); + } /** - * Parses "style" attribute, retuning an object with values + * Checks if line intersects polygon + * + * @todo account for stroke + * * @static - * @memberOf fabric - * @param {SVGElement} element Element to parse - * @return {Object} Objects with values parsed from style attribute of an element - */ - parseStyleAttribute: function(element) { - var oStyle = { }, - style = element.getAttribute('style'); - - if (!style) { - return oStyle; - } - - if (typeof style === 'string') { - parseStyleString(style, oStyle); - } - else { - parseStyleObject(style, oStyle); - } - - return oStyle; - }, - + * @see {@link intersectSegmentPolygon} for segment intersection + * @param {Point} a1 point on line + * @param {Point} a2 other point on line + * @param {Point[]} points polygon points + * @param {boolean} [infinite=true] check segment intersection by passing `false` + * @return {Intersection} + */ + static intersectLinePolygon(a1, a2, points, infinite = true) { + const result = new Intersection(); + const length = points.length; + for (let i = 0, b1, b2, inter; i < length; i++) { + b1 = points[i]; + b2 = points[(i + 1) % length]; + inter = Intersection.intersectLineLine(a1, a2, b1, b2, infinite, false); + if (inter.status === 'Coincident') { + return inter; + } + result.append(...inter.points); + } + if (result.points.length > 0) { + result.status = 'Intersection'; + } + return result; + } /** - * Parses "points" attribute, returning an array of values + * Checks if segment intersects polygon * @static - * @memberOf fabric - * @param {String} points points attribute string - * @return {Array} array of points + * @see {@link intersectLinePolygon} for line intersection + * @param {Point} a1 boundary point of segment + * @param {Point} a2 other boundary point of segment + * @param {Point[]} points polygon points + * @return {Intersection} */ - parsePointsAttribute: function(points) { - - // points attribute is required and must not be empty - if (!points) { - return null; - } - - // replace commas with whitespace and remove bookending whitespace - points = points.replace(/,/g, ' ').trim(); - - points = points.split(/\s+/); - var parsedPoints = [], i, len; - - for (i = 0, len = points.length; i < len; i += 2) { - parsedPoints.push({ - x: parseFloat(points[i]), - y: parseFloat(points[i + 1]) - }); - } - - // odd number of points is an error - // if (parsedPoints.length % 2 !== 0) { - // return null; - // } - - return parsedPoints; - }, - + static intersectSegmentPolygon(a1, a2, points) { + return Intersection.intersectLinePolygon(a1, a2, points, false); + } /** - * Returns CSS rules for a given SVG document + * Checks if polygon intersects another polygon + * + * @todo account for stroke + * * @static - * @function - * @memberOf fabric - * @param {SVGDocument} doc SVG document to parse - * @return {Object} CSS rules of this document - */ - getCSSRules: function(doc) { - var styles = doc.getElementsByTagName('style'), i, len, - allRules = { }, rules; - - // very crude parsing of style contents - for (i = 0, len = styles.length; i < len; i++) { - var styleContents = styles[i].textContent; - - // remove comments - styleContents = styleContents.replace(/\/\*[\s\S]*?\*\//g, ''); - if (styleContents.trim() === '') { - continue; - } - // recovers all the rule in this form `body { style code... }` - // rules = styleContents.match(/[^{]*\{[\s\S]*?\}/g); - rules = styleContents.split('}'); - // remove empty rules. - rules = rules.filter(function(rule) { return rule.trim(); }); - // at this point we have hopefully an array of rules `body { style code... ` - // eslint-disable-next-line no-loop-func - rules.forEach(function(rule) { - - var match = rule.split('{'), - ruleObj = { }, declaration = match[1].trim(), - propertyValuePairs = declaration.split(';').filter(function(pair) { return pair.trim(); }); - - for (i = 0, len = propertyValuePairs.length; i < len; i++) { - var pair = propertyValuePairs[i].split(':'), - property = pair[0].trim(), - value = pair[1].trim(); - ruleObj[property] = value; - } - rule = match[0].trim(); - rule.split(',').forEach(function(_rule) { - _rule = _rule.replace(/^svg/i, '').trim(); - if (_rule === '') { - return; - } - if (allRules[_rule]) { - fabric.util.object.extend(allRules[_rule], ruleObj); + * @param {Point[]} points1 + * @param {Point[]} points2 + * @return {Intersection} + */ + static intersectPolygonPolygon(points1, points2) { + const result = new Intersection(), length = points1.length; + const coincidences = []; + for (let i = 0; i < length; i++) { + const a1 = points1[i], a2 = points1[(i + 1) % length], inter = Intersection.intersectSegmentPolygon(a1, a2, points2); + if (inter.status === 'Coincident') { + coincidences.push(inter); + result.append(a1, a2); } else { - allRules[_rule] = fabric.util.object.clone(ruleObj); + result.append(...inter.points); } - }); - }); - } - return allRules; - }, - - /** - * Takes url corresponding to an SVG document, and parses it into a set of fabric objects. - * Note that SVG is fetched via XMLHttpRequest, so it needs to conform to SOP (Same Origin Policy) - * @memberOf fabric - * @param {String} url - * @param {Function} callback - * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. - * @param {Object} [options] Object containing options for parsing - * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources - */ - loadSVGFromURL: function(url, callback, reviver, options) { - - url = url.replace(/^\n\s*/, '').trim(); - new fabric.util.request(url, { - method: 'get', - onComplete: onComplete - }); - - function onComplete(r) { - - var xml = r.responseXML; - if (!xml || !xml.documentElement) { - callback && callback(null); - return false; } - - fabric.parseSVGDocument(xml.documentElement, function (results, _options, elements, allElements) { - callback && callback(results, _options, elements, allElements); - }, reviver, options); - } - }, - + if (coincidences.length > 0 && coincidences.length === points1.length) { + return new Intersection('Coincident'); + } + else if (result.points.length > 0) { + result.status = 'Intersection'; + } + return result; + } /** - * Takes string corresponding to an SVG document, and parses it into a set of fabric objects - * @memberOf fabric - * @param {String} string - * @param {Function} callback - * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. - * @param {Object} [options] Object containing options for parsing - * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources - */ - loadSVGFromString: function(string, callback, reviver, options) { - var parser = new fabric.window.DOMParser(), - doc = parser.parseFromString(string.trim(), 'text/xml'); - fabric.parseSVGDocument(doc.documentElement, function (results, _options, elements, allElements) { - callback(results, _options, elements, allElements); - }, reviver, options); + * Checks if polygon intersects rectangle + * @static + * @see {@link intersectPolygonPolygon} for polygon intersection + * @param {Point[]} points polygon points + * @param {Point} r1 top left point of rect + * @param {Point} r2 bottom right point of rect + * @return {Intersection} + */ + static intersectPolygonRectangle(points, r1, r2) { + const min = r1.min(r2), max = r1.max(r2), topRight = new Point(max.x, min.y), bottomLeft = new Point(min.x, max.y); + return Intersection.intersectPolygonPolygon(points, [ + min, + topRight, + max, + bottomLeft, + ]); } - }); - -})(typeof exports !== 'undefined' ? exports : this); - +} +fabric$1.Intersection = Intersection; -fabric.ElementsParser = function(elements, callback, options, reviver, parsingOptions, doc) { - this.elements = elements; - this.callback = callback; - this.options = options; - this.reviver = reviver; - this.svgUid = (options && options.svgUid) || 0; - this.parsingOptions = parsingOptions; - this.regexUrl = /^url\(['"]?#([^'"]+)['"]?\)/g; - this.doc = doc; +const linearDefaultCoords = { + x1: 0, + y1: 0, + x2: 0, + y2: 0, }; +const radialDefaultCoords = Object.assign(Object.assign({}, linearDefaultCoords), { r1: 0, r2: 0 }); -(function(proto) { - proto.parse = function() { - this.instances = new Array(this.elements.length); - this.numElements = this.elements.length; - this.createObjects(); - }; - - proto.createObjects = function() { - var _this = this; - this.elements.forEach(function(element, i) { - element.setAttribute('svgUid', _this.svgUid); - _this.createObject(element, i); - }); - }; +function parseType(el) { + return el.nodeName === 'linearGradient' || el.nodeName === 'LINEARGRADIENT' + ? 'linear' + : 'radial'; +} +function parseGradientUnits(el) { + return el.getAttribute('gradientUnits') === 'userSpaceOnUse' + ? 'pixels' + : 'percentage'; +} - proto.findTag = function(el) { - return fabric[fabric.util.string.capitalize(el.tagName.replace('svg:', ''))]; - }; +const RE_PERCENT = /^(\d+\.\d+)%|(\d+)%$/; +function isPercent(value) { + return value && RE_PERCENT.test(value); +} +/** + * + * @param value + * @param valueIfNaN + * @returns ∈ [0, 1] + */ +function parsePercent(value, valueIfNaN) { + const parsed = typeof value === 'number' + ? value + : typeof value === 'string' + ? parseFloat(value) / (isPercent(value) ? 100 : 1) + : NaN; + return capValue(0, ifNaN(parsed, valueIfNaN), 1); +} - proto.createObject = function(el, index) { - var klass = this.findTag(el); - if (klass && klass.fromElement) { - try { - klass.fromElement(el, this.createCallback(index, el), this.options); - } - catch (err) { - fabric.log(err); - } +const RE_KEY_VALUE_PAIRS = /\s*;\s*/; +const RE_KEY_VALUE = /\s*:\s*/; +function parseColorStop(el, multiplier) { + let colorValue, opacity; + const style = el.getAttribute('style'); + if (style) { + const keyValuePairs = style.split(RE_KEY_VALUE_PAIRS); + if (keyValuePairs[keyValuePairs.length - 1] === '') { + keyValuePairs.pop(); + } + for (let i = keyValuePairs.length; i--;) { + const [key, value] = keyValuePairs[i] + .split(RE_KEY_VALUE) + .map((s) => s.trim()); + if (key === 'stop-color') { + colorValue = value; + } + else if (key === 'stop-opacity') { + opacity = value; + } + } } - else { - this.checkIfDone(); + const color = new Color(colorValue || el.getAttribute('stop-color') || 'rgb(0,0,0)'); + return { + offset: parsePercent(el.getAttribute('offset'), 0), + color: color.toRgb(), + opacity: ifNaN(parseFloat(opacity || el.getAttribute('stop-opacity') || ''), 1) * + color.getAlpha() * + multiplier, + }; +} +function parseColorStops(el, opacityAttr) { + const colorStops = [], colorStopEls = el.getElementsByTagName('stop'), multiplier = parsePercent(opacityAttr, 1); + for (let i = colorStopEls.length; i--;) { + colorStops.push(parseColorStop(colorStopEls[i], multiplier)); } - }; + return colorStops; +} - proto.createCallback = function(index, el) { - var _this = this; - return function(obj) { - var _options; - _this.resolveGradient(obj, el, 'fill'); - _this.resolveGradient(obj, el, 'stroke'); - if (obj instanceof fabric.Image && obj._originalElement) { - _options = obj.parsePreserveAspectRatioAttribute(el); - } - obj._removeTransformMatrix(_options); - _this.resolveClipPath(obj, el); - _this.reviver && _this.reviver(el, obj); - _this.instances[index] = obj; - _this.checkIfDone(); +function convertPercentUnitsToValues(valuesToConvert, { width, height, gradientUnits }) { + let finalValue; + return Object.keys(valuesToConvert).reduce((acc, prop) => { + const propValue = valuesToConvert[prop]; + if (propValue === 'Infinity') { + finalValue = 1; + } + else if (propValue === '-Infinity') { + finalValue = 0; + } + else { + finalValue = + typeof propValue === 'string' ? parseFloat(propValue) : propValue; + if (typeof propValue === 'string' && isPercent(propValue)) { + finalValue *= 0.01; + if (gradientUnits === 'pixels') { + // then we need to fix those percentages here in svg parsing + if (prop === 'x1' || prop === 'x2' || prop === 'r2') { + finalValue *= width; + } + if (prop === 'y1' || prop === 'y2') { + finalValue *= height; + } + } + } + } + acc[prop] = finalValue; + return acc; + }, {}); +} +function getValue(el, key) { + return el.getAttribute(key); +} +function parseLinearCoords(el) { + return { + x1: getValue(el, 'x1') || 0, + y1: getValue(el, 'y1') || 0, + x2: getValue(el, 'x2') || '100%', + y2: getValue(el, 'y2') || 0, }; - }; - - proto.extractPropertyDefinition = function(obj, property, storage) { - var value = obj[property], regex = this.regexUrl; - if (!regex.test(value)) { - return; - } - regex.lastIndex = 0; - var id = regex.exec(value)[1]; - regex.lastIndex = 0; - return fabric[storage][this.svgUid][id]; - }; - - proto.resolveGradient = function(obj, el, property) { - var gradientDef = this.extractPropertyDefinition(obj, property, 'gradientDefs'); - if (gradientDef) { - var opacityAttr = el.getAttribute(property + '-opacity'); - var gradient = fabric.Gradient.fromElement(gradientDef, obj, opacityAttr, this.options); - obj.set(property, gradient); - } - }; - - proto.createClipPathCallback = function(obj, container) { - return function(_newObj) { - _newObj._removeTransformMatrix(); - _newObj.fillRule = _newObj.clipRule; - container.push(_newObj); +} +function parseRadialCoords(el) { + return { + x1: getValue(el, 'fx') || getValue(el, 'cx') || '50%', + y1: getValue(el, 'fy') || getValue(el, 'cy') || '50%', + r1: 0, + x2: getValue(el, 'cx') || '50%', + y2: getValue(el, 'cy') || '50%', + r2: getValue(el, 'r') || '50%', }; - }; +} +function parseCoords(el, size) { + return convertPercentUnitsToValues(parseType(el) === 'linear' ? parseLinearCoords(el) : parseRadialCoords(el), Object.assign(Object.assign({}, size), { gradientUnits: parseGradientUnits(el) })); +} - proto.resolveClipPath = function(obj, usingElement) { - var clipPath = this.extractPropertyDefinition(obj, 'clipPath', 'clipPaths'), - element, klass, objTransformInv, container, gTransform, options; - if (clipPath) { - container = []; - objTransformInv = fabric.util.invertTransform(obj.calcTransformMatrix()); - // move the clipPath tag as sibling to the real element that is using it - var clipPathTag = clipPath[0].parentNode; - var clipPathOwner = usingElement; - while (clipPathOwner.parentNode && clipPathOwner.getAttribute('clip-path') !== obj.clipPath) { - clipPathOwner = clipPathOwner.parentNode; - } - clipPathOwner.parentNode.appendChild(clipPathTag); - for (var i = 0; i < clipPath.length; i++) { - element = clipPath[i]; - klass = this.findTag(element); - klass.fromElement( - element, - this.createClipPathCallback(obj, container), - this.options - ); - } - if (container.length === 1) { - clipPath = container[0]; - } - else { - clipPath = new fabric.Group(container); - } - gTransform = fabric.util.multiplyTransformMatrices( - objTransformInv, - clipPath.calcTransformMatrix() - ); - if (clipPath.clipPath) { - this.resolveClipPath(clipPath, clipPathOwner); - } - var options = fabric.util.qrDecompose(gTransform); - clipPath.flipX = false; - clipPath.flipY = false; - clipPath.set('scaleX', options.scaleX); - clipPath.set('scaleY', options.scaleY); - clipPath.angle = options.angle; - clipPath.skewX = options.skewX; - clipPath.skewY = 0; - clipPath.setPositionByOrigin({ x: options.translateX, y: options.translateY }, 'center', 'center'); - obj.clipPath = clipPath; - } - else { - // if clip-path does not resolve to any element, delete the property. - delete obj.clipPath; +/** + * Gradient class + * @class Gradient + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#gradients} + */ +class Gradient { + constructor({ type = 'linear', gradientUnits = 'pixels', coords, colorStops = [], offsetX = 0, offsetY = 0, gradientTransform, id, }) { + /** + * Horizontal offset for aligning gradients coming from SVG when outside pathgroups + * @type Number + * @default 0 + */ + this.offsetX = 0; + /** + * Vertical offset for aligning gradients coming from SVG when outside pathgroups + * @type Number + * @default 0 + */ + this.offsetY = 0; + /** + * A transform matrix to apply to the gradient before painting. + * Imported from svg gradients, is not applied with the current transform in the center. + * Before this transform is applied, the origin point is at the top left corner of the object + * plus the addition of offsetY and offsetX. + * @type Number[] + * @default null + */ + this.gradientTransform = null; + const uid = fabric$1.Object.__uid++; + this.id = id ? `${id}_${uid}` : uid; + this.type = type; + this.gradientUnits = gradientUnits; + this.gradientTransform = gradientTransform || null; + this.offsetX = offsetX; + this.offsetY = offsetY; + this.coords = Object.assign(Object.assign({}, (this.type === 'radial' ? radialDefaultCoords : linearDefaultCoords)), coords); + this.colorStops = colorStops.slice(); + } + // isType(type: S): this is Gradient { + // return (this.type as GradientType) === type; + // } + /** + * Adds another colorStop + * @param {Record} colorStop Object with offset and color + * @return {Gradient} thisArg + */ + addColorStop(colorStops) { + for (const position in colorStops) { + const color = new Color(colorStops[position]); + this.colorStops.push({ + offset: parseFloat(position), + color: color.toRgb(), + opacity: color.getAlpha(), + }); + } + return this; } - }; - - proto.checkIfDone = function() { - if (--this.numElements === 0) { - this.instances = this.instances.filter(function(el) { - // eslint-disable-next-line no-eq-null, eqeqeq - return el != null; - }); - this.callback(this.instances, this.elements); - } - }; -})(fabric.ElementsParser.prototype); - - -(function(global) { - - 'use strict'; - - /* Adaptation of work of Kevin Lindsey (kevin@kevlindev.com) */ - - var fabric = global.fabric || (global.fabric = { }); - - if (fabric.Point) { - fabric.warn('fabric.Point is already defined'); - return; - } - - fabric.Point = Point; - - /** - * Point class - * @class fabric.Point - * @memberOf fabric - * @constructor - * @param {Number} x - * @param {Number} y - * @return {fabric.Point} thisArg - */ - function Point(x, y) { - this.x = x; - this.y = y; - } - - Point.prototype = /** @lends fabric.Point.prototype */ { - - type: 'point', - - constructor: Point, - /** - * Adds another point to this one and returns another one - * @param {fabric.Point} that - * @return {fabric.Point} new Point instance with added values + * Returns object representation of a gradient + * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {object} */ - add: function (that) { - return new Point(this.x + that.x, this.y + that.y); - }, - + toObject(propertiesToInclude) { + return Object.assign(Object.assign({}, pick(this, propertiesToInclude)), { type: this.type, coords: this.coords, colorStops: this.colorStops, offsetX: this.offsetX, offsetY: this.offsetY, gradientUnits: this.gradientUnits, gradientTransform: this.gradientTransform + ? this.gradientTransform.concat() + : this.gradientTransform }); + } + /* _TO_SVG_START_ */ /** - * Adds another point to this one - * @param {fabric.Point} that - * @return {fabric.Point} thisArg - * @chainable + * Returns SVG representation of an gradient + * @param {fabric.Object} object Object to create a gradient for + * @return {String} SVG representation of an gradient (linear/radial) */ - addEquals: function (that) { - this.x += that.x; - this.y += that.y; - return this; - }, - + toSVG(object, { additionalTransform: preTransform } = {}) { + const markup = [], transform = (this.gradientTransform + ? this.gradientTransform.concat() + : iMatrix.concat()), gradientUnits = this.gradientUnits === 'pixels' + ? 'userSpaceOnUse' + : 'objectBoundingBox'; + // colorStops must be sorted ascending, and guarded against deep mutations + const colorStops = this.colorStops + .map((colorStop) => (Object.assign({}, colorStop))) + .sort((a, b) => { + return a.offset - b.offset; + }); + let offsetX = -this.offsetX, offsetY = -this.offsetY; + if (gradientUnits === 'objectBoundingBox') { + offsetX /= object.width; + offsetY /= object.height; + } + else { + offsetX += object.width / 2; + offsetY += object.height / 2; + } + if (object.type === 'path' && this.gradientUnits !== 'percentage') { + offsetX -= object.pathOffset.x; + offsetY -= object.pathOffset.y; + } + transform[4] -= offsetX; + transform[5] -= offsetY; + const commonAttributes = [ + `id="SVGID_${this.id}"`, + `gradientUnits="${gradientUnits}"`, + `gradientTransform="${preTransform ? preTransform + ' ' : ''}${matrixToSVG(transform)}"`, + '', + ].join(' '); + if (this.type === 'linear') { + const { x1, y1, x2, y2 } = this.coords; + markup.push('\n'); + } + else if (this.type === 'radial') { + const { x1, y1, x2, y2, r1, r2 } = this + .coords; + const needsSwap = r1 > r2; + // svg radial gradient has just 1 radius. the biggest. + markup.push('\n'); + if (needsSwap) { + // svg goes from internal to external radius. if radius are inverted, swap color stops. + colorStops.reverse(); // mutates array + colorStops.forEach((colorStop) => { + colorStop.offset = 1 - colorStop.offset; + }); + } + const minRadius = Math.min(r1, r2); + if (minRadius > 0) { + // i have to shift all colorStops and add new one in 0. + const maxRadius = Math.max(r1, r2), percentageShift = minRadius / maxRadius; + colorStops.forEach((colorStop) => { + colorStop.offset += percentageShift * (1 - colorStop.offset); + }); + } + } + colorStops.forEach(({ color, offset, opacity }) => { + markup.push('\n'); + }); + markup.push(this.type === 'linear' ? '' : '', '\n'); + return markup.join(''); + } + /* _TO_SVG_END_ */ /** - * Adds value to this point and returns a new one - * @param {Number} scalar - * @return {fabric.Point} new Point with added value + * Returns an instance of CanvasGradient + * @param {CanvasRenderingContext2D} ctx Context to render on + * @return {CanvasGradient} */ - scalarAdd: function (scalar) { - return new Point(this.x + scalar, this.y + scalar); - }, - + toLive(ctx) { + if (!this.type) { + return; + } + const coords = this.coords; + const gradient = this.type === 'linear' + ? ctx.createLinearGradient(coords.x1, coords.y1, coords.x2, coords.y2) + : ctx.createRadialGradient(coords.x1, coords.y1, coords.r1, coords.x2, coords.y2, coords.r2); + this.colorStops.forEach(({ color, opacity, offset }) => { + gradient.addColorStop(offset, typeof opacity !== 'undefined' + ? new Color(color).setAlpha(opacity).toRgba() + : color); + }); + return gradient; + } + /* _FROM_SVG_START_ */ /** - * Adds value to this point - * @param {Number} scalar - * @return {fabric.Point} thisArg - * @chainable + * Returns {@link Gradient} instance from an SVG element + * @static + * @memberOf Gradient + * @param {SVGGradientElement} el SVG gradient element + * @param {FabricObject} instance + * @param {String} opacity A fill-opacity or stroke-opacity attribute to multiply to each stop's opacity. + * @param {SVGOptions} svgOptions an object containing the size of the SVG in order to parse correctly gradients + * that uses gradientUnits as 'userSpaceOnUse' and percentages. + * @return {Gradient} Gradient instance + * @see http://www.w3.org/TR/SVG/pservers.html#LinearGradientElement + * @see http://www.w3.org/TR/SVG/pservers.html#RadialGradientElement + * + * @example + * + * + * + * + * + * + * OR + * + * + * + * + * + * + * OR + * + * + * + * + * + * + * + * OR + * + * + * + * + * + * + * */ - scalarAddEquals: function (scalar) { - this.x += scalar; - this.y += scalar; - return this; - }, + static fromElement(el, instance, svgOptions) { + const gradientUnits = parseGradientUnits(el); + return new Gradient(Object.assign({ id: el.getAttribute('id') || undefined, type: parseType(el), coords: parseCoords(el, { + width: svgOptions.viewBoxWidth || svgOptions.width, + height: svgOptions.viewBoxHeight || svgOptions.height, + }), colorStops: parseColorStops(el, svgOptions.opacity), gradientUnits, gradientTransform: parseTransformAttribute(el.getAttribute('gradientTransform') || '') }, (gradientUnits === 'pixels' + ? { + offsetX: -instance.left, + offsetY: -instance.top, + } + : { + offsetX: 0, + offsetY: 0, + }))); + } +} +fabric$1.Gradient = Gradient; +//@ts-nocheck +/** + * @see {@link http://fabricjs.com/patterns demo} + * @see {@link http://fabricjs.com/dynamic-patterns demo} + */ +class Pattern$1 { /** - * Subtracts another point from this point and returns a new one - * @param {fabric.Point} that - * @return {fabric.Point} new Point object with subtracted values + * Constructor + * @param {Object} [options] Options object + * @param {option.source} [source] the pattern source, eventually empty or a drawable + * @return {fabric.Pattern} thisArg */ - subtract: function (that) { - return new Point(this.x - that.x, this.y - that.y); - }, - + constructor(options = {}) { + this.type = 'pattern'; + /** + * @type TPatternRepeat + * @defaults + */ + this.repeat = 'repeat'; + /** + * Pattern horizontal offset from object's left/top corner + * @type Number + * @default + */ + this.offsetX = 0; + /** + * Pattern vertical offset from object's left/top corner + * @type Number + * @default + */ + this.offsetY = 0; + /** + * @type TCrossOrigin + * @default + */ + this.crossOrigin = ''; + /** + * transform matrix to change the pattern, imported from svgs. + * @type Array + * @default + */ + this.patternTransform = null; + this.id = fabric$1.Object.__uid++; + this.setOptions(options); + } + setOptions(options) { + for (const prop in options) { + this[prop] = options[prop]; + } + } /** - * Subtracts another point from this point - * @param {fabric.Point} that - * @return {fabric.Point} thisArg - * @chainable + * @returns true if {@link source} is an element */ - subtractEquals: function (that) { - this.x -= that.x; - this.y -= that.y; - return this; - }, - + isImageSource() { + return typeof this.source.src === 'string'; + } /** - * Subtracts value from this point and returns a new one - * @param {Number} scalar - * @return {fabric.Point} + * @returns true if {@link source} is a element */ - scalarSubtract: function (scalar) { - return new Point(this.x - scalar, this.y - scalar); - }, - + isCanvasSource() { + return typeof this.source === 'object' && this.source.toDataURL; + } + sourceToString() { + return this.isImageSource() + ? this.source.src + : this.isCanvasSource() + ? this.source.toDataURL() + : ''; + } /** - * Subtracts value from this point - * @param {Number} scalar - * @return {fabric.Point} thisArg - * @chainable - */ - scalarSubtractEquals: function (scalar) { - this.x -= scalar; - this.y -= scalar; - return this; - }, - - /** - * Multiplies this point by a value and returns a new one - * TODO: rename in scalarMultiply in 2.0 - * @param {Number} scalar - * @return {fabric.Point} - */ - multiply: function (scalar) { - return new Point(this.x * scalar, this.y * scalar); - }, - - /** - * Multiplies this point by a value - * TODO: rename in scalarMultiplyEquals in 2.0 - * @param {Number} scalar - * @return {fabric.Point} thisArg - * @chainable - */ - multiplyEquals: function (scalar) { - this.x *= scalar; - this.y *= scalar; - return this; - }, - - /** - * Divides this point by a value and returns a new one - * TODO: rename in scalarDivide in 2.0 - * @param {Number} scalar - * @return {fabric.Point} - */ - divide: function (scalar) { - return new Point(this.x / scalar, this.y / scalar); - }, - - /** - * Divides this point by a value - * TODO: rename in scalarDivideEquals in 2.0 - * @param {Number} scalar - * @return {fabric.Point} thisArg - * @chainable - */ - divideEquals: function (scalar) { - this.x /= scalar; - this.y /= scalar; - return this; - }, - - /** - * Returns true if this point is equal to another one - * @param {fabric.Point} that - * @return {Boolean} - */ - eq: function (that) { - return (this.x === that.x && this.y === that.y); - }, - - /** - * Returns true if this point is less than another one - * @param {fabric.Point} that - * @return {Boolean} - */ - lt: function (that) { - return (this.x < that.x && this.y < that.y); - }, - - /** - * Returns true if this point is less than or equal to another one - * @param {fabric.Point} that - * @return {Boolean} - */ - lte: function (that) { - return (this.x <= that.x && this.y <= that.y); - }, - - /** - - * Returns true if this point is greater another one - * @param {fabric.Point} that - * @return {Boolean} - */ - gt: function (that) { - return (this.x > that.x && this.y > that.y); - }, - - /** - * Returns true if this point is greater than or equal to another one - * @param {fabric.Point} that - * @return {Boolean} - */ - gte: function (that) { - return (this.x >= that.x && this.y >= that.y); - }, - - /** - * Returns new point which is the result of linear interpolation with this one and another one - * @param {fabric.Point} that - * @param {Number} t , position of interpolation, between 0 and 1 default 0.5 - * @return {fabric.Point} - */ - lerp: function (that, t) { - if (typeof t === 'undefined') { - t = 0.5; - } - t = Math.max(Math.min(1, t), 0); - return new Point(this.x + (that.x - this.x) * t, this.y + (that.y - this.y) * t); - }, - - /** - * Returns distance from this point and another one - * @param {fabric.Point} that - * @return {Number} - */ - distanceFrom: function (that) { - var dx = this.x - that.x, - dy = this.y - that.y; - return Math.sqrt(dx * dx + dy * dy); - }, - - /** - * Returns the point between this point and another one - * @param {fabric.Point} that - * @return {fabric.Point} - */ - midPointFrom: function (that) { - return this.lerp(that); - }, - - /** - * Returns a new point which is the min of this and another one - * @param {fabric.Point} that - * @return {fabric.Point} - */ - min: function (that) { - return new Point(Math.min(this.x, that.x), Math.min(this.y, that.y)); - }, - - /** - * Returns a new point which is the max of this and another one - * @param {fabric.Point} that - * @return {fabric.Point} - */ - max: function (that) { - return new Point(Math.max(this.x, that.x), Math.max(this.y, that.y)); - }, - - /** - * Returns string representation of this point - * @return {String} - */ - toString: function () { - return this.x + ',' + this.y; - }, - - /** - * Sets x/y of this point - * @param {Number} x - * @param {Number} y - * @chainable - */ - setXY: function (x, y) { - this.x = x; - this.y = y; - return this; - }, - - /** - * Sets x of this point - * @param {Number} x - * @chainable - */ - setX: function (x) { - this.x = x; - return this; - }, - - /** - * Sets y of this point - * @param {Number} y - * @chainable - */ - setY: function (y) { - this.y = y; - return this; - }, - - /** - * Sets x/y of this point from another point - * @param {fabric.Point} that - * @chainable - */ - setFromPoint: function (that) { - this.x = that.x; - this.y = that.y; - return this; - }, - - /** - * Swaps x/y of this point and another point - * @param {fabric.Point} that - */ - swap: function (that) { - var x = this.x, - y = this.y; - this.x = that.x; - this.y = that.y; - that.x = x; - that.y = y; - }, - - /** - * return a cloned instance of the point - * @return {fabric.Point} + * Returns an instance of CanvasPattern + * @param {CanvasRenderingContext2D} ctx Context to create pattern + * @return {CanvasPattern} */ - clone: function () { - return new Point(this.x, this.y); + toLive(ctx) { + if ( + // if the image failed to load, return, and allow rest to continue loading + !this.source || + // if an image + (this.isImageSource() && + (!this.source.complete || + this.source.naturalWidth === 0 || + this.source.naturalHeight === 0))) { + return ''; + } + return ctx.createPattern(this.source, this.repeat); } - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - /* Adaptation of work of Kevin Lindsey (kevin@kevlindev.com) */ - var fabric = global.fabric || (global.fabric = { }); - - if (fabric.Intersection) { - fabric.warn('fabric.Intersection is already defined'); - return; - } - - /** - * Intersection class - * @class fabric.Intersection - * @memberOf fabric - * @constructor - */ - function Intersection(status) { - this.status = status; - this.points = []; - } - - fabric.Intersection = Intersection; - - fabric.Intersection.prototype = /** @lends fabric.Intersection.prototype */ { - - constructor: Intersection, - /** - * Appends a point to intersection - * @param {fabric.Point} point - * @return {fabric.Intersection} thisArg - * @chainable + * Returns object representation of a pattern + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {object} Object representation of a pattern instance */ - appendPoint: function (point) { - this.points.push(point); - return this; - }, - + toObject(propertiesToInclude) { + return Object.assign(Object.assign({}, pick(this, propertiesToInclude)), { type: 'pattern', source: this.sourceToString(), repeat: this.repeat, crossOrigin: this.crossOrigin, offsetX: toFixed(this.offsetX, config.NUM_FRACTION_DIGITS), offsetY: toFixed(this.offsetY, config.NUM_FRACTION_DIGITS), patternTransform: this.patternTransform + ? this.patternTransform.concat() + : null }); + } + /* _TO_SVG_START_ */ /** - * Appends points to intersection - * @param {Array} points - * @return {fabric.Intersection} thisArg - * @chainable + * Returns SVG representation of a pattern */ - appendPoints: function (points) { - this.points = this.points.concat(points); - return this; - } - }; - - /** - * Checks if one line intersects another - * TODO: rename in intersectSegmentSegment - * @static - * @param {fabric.Point} a1 - * @param {fabric.Point} a2 - * @param {fabric.Point} b1 - * @param {fabric.Point} b2 - * @return {fabric.Intersection} - */ - fabric.Intersection.intersectLineLine = function (a1, a2, b1, b2) { - var result, - uaT = (b2.x - b1.x) * (a1.y - b1.y) - (b2.y - b1.y) * (a1.x - b1.x), - ubT = (a2.x - a1.x) * (a1.y - b1.y) - (a2.y - a1.y) * (a1.x - b1.x), - uB = (b2.y - b1.y) * (a2.x - a1.x) - (b2.x - b1.x) * (a2.y - a1.y); - if (uB !== 0) { - var ua = uaT / uB, - ub = ubT / uB; - if (0 <= ua && ua <= 1 && 0 <= ub && ub <= 1) { - result = new Intersection('Intersection'); - result.appendPoint(new fabric.Point(a1.x + ua * (a2.x - a1.x), a1.y + ua * (a2.y - a1.y))); - } - else { - result = new Intersection(); - } - } - else { - if (uaT === 0 || ubT === 0) { - result = new Intersection('Coincident'); - } - else { - result = new Intersection('Parallel'); - } - } - return result; - }; - - /** - * Checks if line intersects polygon - * TODO: rename in intersectSegmentPolygon - * fix detection of coincident - * @static - * @param {fabric.Point} a1 - * @param {fabric.Point} a2 - * @param {Array} points - * @return {fabric.Intersection} - */ - fabric.Intersection.intersectLinePolygon = function(a1, a2, points) { - var result = new Intersection(), - length = points.length, - b1, b2, inter, i; - - for (i = 0; i < length; i++) { - b1 = points[i]; - b2 = points[(i + 1) % length]; - inter = Intersection.intersectLineLine(a1, a2, b1, b2); - - result.appendPoints(inter.points); - } - if (result.points.length > 0) { - result.status = 'Intersection'; - } - return result; - }; - - /** - * Checks if polygon intersects another polygon - * @static - * @param {Array} points1 - * @param {Array} points2 - * @return {fabric.Intersection} - */ - fabric.Intersection.intersectPolygonPolygon = function (points1, points2) { - var result = new Intersection(), - length = points1.length, i; - - for (i = 0; i < length; i++) { - var a1 = points1[i], - a2 = points1[(i + 1) % length], - inter = Intersection.intersectLinePolygon(a1, a2, points2); - - result.appendPoints(inter.points); - } - if (result.points.length > 0) { - result.status = 'Intersection'; - } - return result; - }; - - /** - * Checks if polygon intersects rectangle - * @static - * @param {Array} points - * @param {fabric.Point} r1 - * @param {fabric.Point} r2 - * @return {fabric.Intersection} - */ - fabric.Intersection.intersectPolygonRectangle = function (points, r1, r2) { - var min = r1.min(r2), - max = r1.max(r2), - topRight = new fabric.Point(max.x, min.y), - bottomLeft = new fabric.Point(min.x, max.y), - inter1 = Intersection.intersectLinePolygon(min, topRight, points), - inter2 = Intersection.intersectLinePolygon(topRight, max, points), - inter3 = Intersection.intersectLinePolygon(max, bottomLeft, points), - inter4 = Intersection.intersectLinePolygon(bottomLeft, min, points), - result = new Intersection(); - - result.appendPoints(inter1.points); - result.appendPoints(inter2.points); - result.appendPoints(inter3.points); - result.appendPoints(inter4.points); - - if (result.points.length > 0) { - result.status = 'Intersection'; - } - return result; - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }); - - if (fabric.Color) { - fabric.warn('fabric.Color is already defined.'); - return; - } - - /** - * Color class - * The purpose of {@link fabric.Color} is to abstract and encapsulate common color operations; - * {@link fabric.Color} is a constructor and creates instances of {@link fabric.Color} objects. - * - * @class fabric.Color - * @param {String} color optional in hex or rgb(a) or hsl format or from known color list - * @return {fabric.Color} thisArg - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#colors} - */ - function Color(color) { - if (!color) { - this.setSource([0, 0, 0, 1]); + toSVG({ width, height }) { + const patternSource = this.source, patternOffsetX = ifNaN(this.offsetX / width, 0), patternOffsetY = ifNaN(this.offsetY / height, 0), patternWidth = this.repeat === 'repeat-y' || this.repeat === 'no-repeat' + ? 1 + Math.abs(patternOffsetX || 0) + : ifNaN(patternSource.width / width, 0), patternHeight = this.repeat === 'repeat-x' || this.repeat === 'no-repeat' + ? 1 + Math.abs(patternOffsetY || 0) + : ifNaN(patternSource.height / height, 0); + return [ + ``, + ``, + ``, + '', + ].join('\n'); } - else { - this._tryParsingColor(color); + /* _TO_SVG_END_ */ + static async fromObject(_a, options) { + var { source } = _a, serialized = __rest(_a, ["source"]); + const img = await loadImage(source, Object.assign(Object.assign({}, options), { crossOrigin: serialized.crossOrigin })); + return new Pattern$1(Object.assign(Object.assign({}, serialized), { source: img })); } - } - - fabric.Color = Color; - - fabric.Color.prototype = /** @lends fabric.Color.prototype */ { - - /** - * @private - * @param {String|Array} color Color value to parse - */ - _tryParsingColor: function(color) { - var source; - - if (color in Color.colorNameMap) { - color = Color.colorNameMap[color]; - } - - if (color === 'transparent') { - source = [255, 255, 255, 0]; - } - - if (!source) { - source = Color.sourceFromHex(color); - } - if (!source) { - source = Color.sourceFromRgb(color); - } - if (!source) { - source = Color.sourceFromHsl(color); - } - if (!source) { - //if color is not recognize let's make black as canvas does - source = [0, 0, 0, 1]; - } - if (source) { - this.setSource(source); - } - }, - - /** - * Adapted from https://github.com/mjijackson - * @private - * @param {Number} r Red color value - * @param {Number} g Green color value - * @param {Number} b Blue color value - * @return {Array} Hsl color - */ - _rgbToHsl: function(r, g, b) { - r /= 255; g /= 255; b /= 255; - - var h, s, l, - max = fabric.util.array.max([r, g, b]), - min = fabric.util.array.min([r, g, b]); - - l = (max + min) / 2; - - if (max === min) { - h = s = 0; // achromatic - } - else { - var d = max - min; - s = l > 0.5 ? d / (2 - max - min) : d / (max + min); - switch (max) { - case r: - h = (g - b) / d + (g < b ? 6 : 0); - break; - case g: - h = (b - r) / d + 2; - break; - case b: - h = (r - g) / d + 4; - break; - } - h /= 6; - } - - return [ - Math.round(h * 360), - Math.round(s * 100), - Math.round(l * 100) - ]; - }, - - /** - * Returns source of this color (where source is an array representation; ex: [200, 200, 100, 1]) - * @return {Array} - */ - getSource: function() { - return this._source; - }, - - /** - * Sets source of this color (where source is an array representation; ex: [200, 200, 100, 1]) - * @param {Array} source - */ - setSource: function(source) { - this._source = source; - }, - - /** - * Returns color representation in RGB format - * @return {String} ex: rgb(0-255,0-255,0-255) - */ - toRgb: function() { - var source = this.getSource(); - return 'rgb(' + source[0] + ',' + source[1] + ',' + source[2] + ')'; - }, - - /** - * Returns color representation in RGBA format - * @return {String} ex: rgba(0-255,0-255,0-255,0-1) - */ - toRgba: function() { - var source = this.getSource(); - return 'rgba(' + source[0] + ',' + source[1] + ',' + source[2] + ',' + source[3] + ')'; - }, - +} +fabric$1.Pattern = Pattern$1; + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), toFixed = fabric.util.toFixed; + /** + * Shadow class + * @class fabric.Shadow + * @see {@link http://fabricjs.com/shadows|Shadow demo} + * @see {@link fabric.Shadow#initialize} for constructor definition + */ + fabric.Shadow = fabric.util.createClass( + /** @lends fabric.Shadow.prototype */ { + /** + * Shadow color + * @type String + * @default + */ + color: 'rgb(0,0,0)', + /** + * Shadow blur + * @type Number + */ + blur: 0, + /** + * Shadow horizontal offset + * @type Number + * @default + */ + offsetX: 0, + /** + * Shadow vertical offset + * @type Number + * @default + */ + offsetY: 0, + /** + * Whether the shadow should affect stroke operations + * @type Boolean + * @default + */ + affectStroke: false, + /** + * Indicates whether toObject should include default values + * @type Boolean + * @default + */ + includeDefaultValues: true, + /** + * When `false`, the shadow will scale with the object. + * When `true`, the shadow's offsetX, offsetY, and blur will not be affected by the object's scale. + * default to false + * @type Boolean + * @default + */ + nonScaling: false, + /** + * Constructor + * @param {Object|String} [options] Options object with any of color, blur, offsetX, offsetY properties or string (e.g. "rgba(0,0,0,0.2) 2px 2px 10px") + * @return {fabric.Shadow} thisArg + */ + initialize: function (options) { + if (typeof options === 'string') { + options = this._parseShadow(options); + } + for (var prop in options) { + this[prop] = options[prop]; + } + this.id = fabric.Object.__uid++; + }, + /** + * @private + * @param {String} shadow Shadow value to parse + * @return {Object} Shadow object with color, offsetX, offsetY and blur + */ + _parseShadow: function (shadow) { + var shadowStr = shadow.trim(), offsetsAndBlur = fabric.Shadow.reOffsetsAndBlur.exec(shadowStr) || [], color = shadowStr.replace(fabric.Shadow.reOffsetsAndBlur, '') || + 'rgb(0,0,0)'; + return { + color: color.trim(), + offsetX: parseFloat(offsetsAndBlur[1], 10) || 0, + offsetY: parseFloat(offsetsAndBlur[2], 10) || 0, + blur: parseFloat(offsetsAndBlur[3], 10) || 0, + }; + }, + /** + * Returns a string representation of an instance + * @see http://www.w3.org/TR/css-text-decor-3/#text-shadow + * @return {String} Returns CSS3 text-shadow declaration + */ + toString: function () { + return [this.offsetX, this.offsetY, this.blur, this.color].join('px '); + }, + /* _TO_SVG_START_ */ + /** + * Returns SVG representation of a shadow + * @param {fabric.Object} object + * @return {String} SVG representation of a shadow + */ + toSVG: function (object) { + var fBoxX = 40, fBoxY = 40, NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS, offset = fabric.util.rotateVector(new Point(this.offsetX, this.offsetY), fabric.util.degreesToRadians(-object.angle)), BLUR_BOX = 20, color = new Color(this.color); + if (object.width && object.height) { + //http://www.w3.org/TR/SVG/filters.html#FilterEffectsRegion + // we add some extra space to filter box to contain the blur ( 20 ) + fBoxX = + toFixed((Math.abs(offset.x) + this.blur) / object.width, NUM_FRACTION_DIGITS) * + 100 + + BLUR_BOX; + fBoxY = + toFixed((Math.abs(offset.y) + this.blur) / object.height, NUM_FRACTION_DIGITS) * + 100 + + BLUR_BOX; + } + if (object.flipX) { + offset.x *= -1; + } + if (object.flipY) { + offset.y *= -1; + } + return ('\n' + + '\t\n' + + '\t\n' + + '\t\n' + + '\t\n' + + '\t\n' + + '\t\t\n' + + '\t\t\n' + + '\t\n' + + '\n'); + }, + /* _TO_SVG_END_ */ + /** + * Returns object representation of a shadow + * @return {Object} Object representation of a shadow instance + */ + toObject: function () { + if (this.includeDefaultValues) { + return { + color: this.color, + blur: this.blur, + offsetX: this.offsetX, + offsetY: this.offsetY, + affectStroke: this.affectStroke, + nonScaling: this.nonScaling, + }; + } + var obj = {}, proto = fabric.Shadow.prototype; + [ + 'color', + 'blur', + 'offsetX', + 'offsetY', + 'affectStroke', + 'nonScaling', + ].forEach(function (prop) { + if (this[prop] !== proto[prop]) { + obj[prop] = this[prop]; + } + }, this); + return obj; + }, + }); /** - * Returns color representation in HSL format - * @return {String} ex: hsl(0-360,0%-100%,0%-100%) - */ - toHsl: function() { - var source = this.getSource(), - hsl = this._rgbToHsl(source[0], source[1], source[2]); - - return 'hsl(' + hsl[0] + ',' + hsl[1] + '%,' + hsl[2] + '%)'; - }, - - /** - * Returns color representation in HSLA format - * @return {String} ex: hsla(0-360,0%-100%,0%-100%,0-1) - */ - toHsla: function() { - var source = this.getSource(), - hsl = this._rgbToHsl(source[0], source[1], source[2]); - - return 'hsla(' + hsl[0] + ',' + hsl[1] + '%,' + hsl[2] + '%,' + source[3] + ')'; - }, - - /** - * Returns color representation in HEX format - * @return {String} ex: FF5555 - */ - toHex: function() { - var source = this.getSource(), r, g, b; - - r = source[0].toString(16); - r = (r.length === 1) ? ('0' + r) : r; - - g = source[1].toString(16); - g = (g.length === 1) ? ('0' + g) : g; - - b = source[2].toString(16); - b = (b.length === 1) ? ('0' + b) : b; - - return r.toUpperCase() + g.toUpperCase() + b.toUpperCase(); - }, - - /** - * Returns color representation in HEXA format - * @return {String} ex: FF5555CC - */ - toHexa: function() { - var source = this.getSource(), a; - - a = Math.round(source[3] * 255); - a = a.toString(16); - a = (a.length === 1) ? ('0' + a) : a; - - return this.toHex() + a.toUpperCase(); - }, - - /** - * Gets value of alpha channel for this color - * @return {Number} 0-1 - */ - getAlpha: function() { - return this.getSource()[3]; - }, + * Regex matching shadow offsetX, offsetY and blur (ex: "2px 2px 10px rgba(0,0,0,0.2)", "rgb(0,255,0) 2px 2px") + * @static + * @field + * @memberOf fabric.Shadow + */ + // eslint-disable-next-line max-len + fabric.Shadow.reOffsetsAndBlur = + /(?:\s|^)(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(\d+(?:\.\d*)?(?:px)?)?(?:\s?|$)(?:$|\s)/; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + // aliases for faster resolution + var fabric = global.fabric, extend = fabric.util.object.extend, getElementOffset = fabric.util.getElementOffset, toFixed = fabric.util.toFixed, transformPoint = fabric.util.transformPoint, invertTransform = fabric.util.invertTransform, getNodeCanvas = fabric.util.getNodeCanvas, createCanvasElement = fabric.util.createCanvasElement, CANVAS_INIT_ERROR = new Error('Could not initialize `canvas` element'); + /** + * Static canvas class + * @class fabric.StaticCanvas + * @mixes fabric.Collection + * @mixes fabric.Observable + * @see {@link http://fabricjs.com/static_canvas|StaticCanvas demo} + * @see {@link fabric.StaticCanvas#initialize} for constructor definition + * @fires before:render + * @fires after:render + * @fires canvas:cleared + * @fires object:added + * @fires object:removed + */ + // eslint-disable-next-line max-len + fabric.StaticCanvas = fabric.util.createClass(fabric.CommonMethods, fabric.Collection, + /** @lends fabric.StaticCanvas.prototype */ { + /** + * Constructor + * @param {HTMLElement | String} el <canvas> element to initialize instance on + * @param {Object} [options] Options object + * @return {Object} thisArg + */ + initialize: function (el, options) { + options || (options = {}); + this.renderAndResetBound = this.renderAndReset.bind(this); + this.requestRenderAllBound = this.requestRenderAll.bind(this); + this._initStatic(el, options); + }, + /** + * Background color of canvas instance. + * @type {(String|fabric.Pattern)} + * @default + */ + backgroundColor: '', + /** + * Background image of canvas instance. + * since 2.4.0 image caching is active, please when putting an image as background, add to the + * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom + * vale. As an alternative you can disable image objectCaching + * @type fabric.Image + * @default + */ + backgroundImage: null, + /** + * Overlay color of canvas instance. + * @since 1.3.9 + * @type {(String|fabric.Pattern)} + * @default + */ + overlayColor: '', + /** + * Overlay image of canvas instance. + * since 2.4.0 image caching is active, please when putting an image as overlay, add to the + * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom + * vale. As an alternative you can disable image objectCaching + * @type fabric.Image + * @default + */ + overlayImage: null, + /** + * Indicates whether toObject/toDatalessObject should include default values + * if set to false, takes precedence over the object value. + * @type Boolean + * @default + */ + includeDefaultValues: true, + /** + * Indicates whether objects' state should be saved + * @type Boolean + * @default + */ + stateful: false, + /** + * Indicates whether {@link fabric.Collection.add}, {@link fabric.Collection.insertAt} and {@link fabric.Collection.remove}, + * {@link fabric.StaticCanvas.moveTo}, {@link fabric.StaticCanvas.clear} and many more, should also re-render canvas. + * Disabling this option will not give a performance boost when adding/removing a lot of objects to/from canvas at once + * since the renders are quequed and executed one per frame. + * Disabling is suggested anyway and managing the renders of the app manually is not a big effort ( canvas.requestRenderAll() ) + * Left default to true to do not break documentation and old app, fiddles. + * @type Boolean + * @default + */ + renderOnAddRemove: true, + /** + * Indicates whether object controls (borders/controls) are rendered above overlay image + * @type Boolean + * @default + */ + controlsAboveOverlay: false, + /** + * Indicates whether the browser can be scrolled when using a touchscreen and dragging on the canvas + * @type Boolean + * @default + */ + allowTouchScrolling: false, + /** + * Indicates whether this canvas will use image smoothing, this is on by default in browsers + * @type Boolean + * @default + */ + imageSmoothingEnabled: true, + /** + * The transformation (a Canvas 2D API transform matrix) which focuses the viewport + * @type Array + * @example Default transform + * canvas.viewportTransform = [1, 0, 0, 1, 0, 0]; + * @example Scale by 70% and translate toward bottom-right by 50, without skewing + * canvas.viewportTransform = [0.7, 0, 0, 0.7, 50, 50]; + * @default + */ + viewportTransform: fabric.iMatrix.concat(), + /** + * if set to false background image is not affected by viewport transform + * @since 1.6.3 + * @type Boolean + * @default + */ + backgroundVpt: true, + /** + * if set to false overlya image is not affected by viewport transform + * @since 1.6.3 + * @type Boolean + * @default + */ + overlayVpt: true, + /** + * When true, canvas is scaled by devicePixelRatio for better rendering on retina screens + * @type Boolean + * @default + */ + enableRetinaScaling: true, + /** + * Describe canvas element extension over design + * properties are tl,tr,bl,br. + * if canvas is not zoomed/panned those points are the four corner of canvas + * if canvas is viewportTransformed you those points indicate the extension + * of canvas element in plain untrasformed coordinates + * The coordinates get updated with @method calcViewportBoundaries. + * @memberOf fabric.StaticCanvas.prototype + */ + vptCoords: {}, + /** + * Based on vptCoords and object.aCoords, skip rendering of objects that + * are not included in current viewport. + * May greatly help in applications with crowded canvas and use of zoom/pan + * If One of the corner of the bounding box of the object is on the canvas + * the objects get rendered. + * @memberOf fabric.StaticCanvas.prototype + * @type Boolean + * @default + */ + skipOffscreen: true, + /** + * a fabricObject that, without stroke define a clipping area with their shape. filled in black + * the clipPath object gets used when the canvas has rendered, and the context is placed in the + * top left corner of the canvas. + * clipPath will clip away controls, if you do not want this to happen use controlsAboveOverlay = true + * @type fabric.Object + */ + clipPath: undefined, + /** + * @private + * @param {HTMLElement | String} el <canvas> element to initialize instance on + * @param {Object} [options] Options object + */ + _initStatic: function (el, options) { + this._objects = []; + this._createLowerCanvas(el); + this._initOptions(options); + // only initialize retina scaling once + if (!this.interactive) { + this._initRetinaScaling(); + } + this.calcOffset(); + }, + /** + * @private + */ + _isRetinaScaling: function () { + return config.devicePixelRatio > 1 && this.enableRetinaScaling; + }, + /** + * @private + * @return {Number} retinaScaling if applied, otherwise 1; + */ + getRetinaScaling: function () { + return this._isRetinaScaling() + ? Math.max(1, config.devicePixelRatio) + : 1; + }, + /** + * @private + */ + _initRetinaScaling: function () { + if (!this._isRetinaScaling()) { + return; + } + var scaleRatio = config.devicePixelRatio; + this.__initRetinaScaling(scaleRatio, this.lowerCanvasEl, this.contextContainer); + if (this.upperCanvasEl) { + this.__initRetinaScaling(scaleRatio, this.upperCanvasEl, this.contextTop); + } + }, + __initRetinaScaling: function (scaleRatio, canvas, context) { + canvas.setAttribute('width', this.width * scaleRatio); + canvas.setAttribute('height', this.height * scaleRatio); + context.scale(scaleRatio, scaleRatio); + }, + /** + * Calculates canvas element offset relative to the document + * This method is also attached as "resize" event handler of window + * @return {fabric.Canvas} instance + * @chainable + */ + calcOffset: function () { + this._offset = getElementOffset(this.lowerCanvasEl); + return this; + }, + /** + * @private + */ + _createCanvasElement: function () { + var element = createCanvasElement(); + if (!element) { + throw CANVAS_INIT_ERROR; + } + if (!element.style) { + element.style = {}; + } + if (typeof element.getContext === 'undefined') { + throw CANVAS_INIT_ERROR; + } + return element; + }, + /** + * @private + * @param {Object} [options] Options object + */ + _initOptions: function (options) { + var lowerCanvasEl = this.lowerCanvasEl; + this._setOptions(options); + this.width = this.width || parseInt(lowerCanvasEl.width, 10) || 0; + this.height = this.height || parseInt(lowerCanvasEl.height, 10) || 0; + if (!this.lowerCanvasEl.style) { + return; + } + lowerCanvasEl.width = this.width; + lowerCanvasEl.height = this.height; + lowerCanvasEl.style.width = this.width + 'px'; + lowerCanvasEl.style.height = this.height + 'px'; + this.viewportTransform = this.viewportTransform.slice(); + }, + /** + * Creates a bottom canvas + * @private + * @param {HTMLElement} [canvasEl] + */ + _createLowerCanvas: function (canvasEl) { + // canvasEl === 'HTMLCanvasElement' does not work on jsdom/node + if (canvasEl && canvasEl.getContext) { + this.lowerCanvasEl = canvasEl; + } + else { + this.lowerCanvasEl = + fabric.document.getElementById(canvasEl) || + canvasEl || + this._createCanvasElement(); + } + if (this.lowerCanvasEl.hasAttribute('data-fabric')) { + /* _DEV_MODE_START_ */ + throw new Error('fabric.js: trying to initialize a canvas that has already been initialized'); + /* _DEV_MODE_END_ */ + } + this.lowerCanvasEl.classList.add('lower-canvas'); + this.lowerCanvasEl.setAttribute('data-fabric', 'main'); + if (this.interactive) { + this._originalCanvasStyle = this.lowerCanvasEl.style.cssText; + this._applyCanvasStyle(this.lowerCanvasEl); + } + this.contextContainer = this.lowerCanvasEl.getContext('2d'); + }, + /** + * Returns canvas width (in px) + * @return {Number} + */ + getWidth: function () { + return this.width; + }, + /** + * Returns canvas height (in px) + * @return {Number} + */ + getHeight: function () { + return this.height; + }, + /** + * Sets width of this canvas instance + * @param {Number|String} value Value to set width to + * @param {Object} [options] Options object + * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions + * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions + * @return {fabric.Canvas} instance + * @chainable true + */ + setWidth: function (value, options) { + return this.setDimensions({ width: value }, options); + }, + /** + * Sets height of this canvas instance + * @param {Number|String} value Value to set height to + * @param {Object} [options] Options object + * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions + * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions + * @return {fabric.Canvas} instance + * @chainable true + */ + setHeight: function (value, options) { + return this.setDimensions({ height: value }, options); + }, + /** + * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em) + * @param {Object} dimensions Object with width/height properties + * @param {Number|String} [dimensions.width] Width of canvas element + * @param {Number|String} [dimensions.height] Height of canvas element + * @param {Object} [options] Options object + * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions + * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions + * @return {fabric.Canvas} thisArg + * @chainable + */ + setDimensions: function (dimensions, options) { + var cssValue; + options = options || {}; + for (var prop in dimensions) { + cssValue = dimensions[prop]; + if (!options.cssOnly) { + this._setBackstoreDimension(prop, dimensions[prop]); + cssValue += 'px'; + this.hasLostContext = true; + } + if (!options.backstoreOnly) { + this._setCssDimension(prop, cssValue); + } + } + if (this._isCurrentlyDrawing) { + this.freeDrawingBrush && + this.freeDrawingBrush._setBrushStyles(this.contextTop); + } + this._initRetinaScaling(); + this.calcOffset(); + if (!options.cssOnly) { + this.requestRenderAll(); + } + return this; + }, + /** + * Helper for setting width/height + * @private + * @param {String} prop property (width|height) + * @param {Number} value value to set property to + * @return {fabric.Canvas} instance + * @chainable true + */ + _setBackstoreDimension: function (prop, value) { + this.lowerCanvasEl[prop] = value; + if (this.upperCanvasEl) { + this.upperCanvasEl[prop] = value; + } + if (this.cacheCanvasEl) { + this.cacheCanvasEl[prop] = value; + } + this[prop] = value; + return this; + }, + /** + * Helper for setting css width/height + * @private + * @param {String} prop property (width|height) + * @param {String} value value to set property to + * @return {fabric.Canvas} instance + * @chainable true + */ + _setCssDimension: function (prop, value) { + this.lowerCanvasEl.style[prop] = value; + if (this.upperCanvasEl) { + this.upperCanvasEl.style[prop] = value; + } + if (this.wrapperEl) { + this.wrapperEl.style[prop] = value; + } + return this; + }, + /** + * Returns canvas zoom level + * @return {Number} + */ + getZoom: function () { + return this.viewportTransform[0]; + }, + /** + * Sets viewport transformation of this canvas instance + * @param {Array} vpt a Canvas 2D API transform matrix + * @return {fabric.Canvas} instance + * @chainable true + */ + setViewportTransform: function (vpt) { + var activeObject = this._activeObject, backgroundObject = this.backgroundImage, overlayObject = this.overlayImage, object, i, len; + this.viewportTransform = vpt; + for (i = 0, len = this._objects.length; i < len; i++) { + object = this._objects[i]; + object.group || object.setCoords(true); + } + if (activeObject) { + activeObject.setCoords(); + } + if (backgroundObject) { + backgroundObject.setCoords(true); + } + if (overlayObject) { + overlayObject.setCoords(true); + } + this.calcViewportBoundaries(); + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + /** + * Sets zoom level of this canvas instance, the zoom centered around point + * meaning that following zoom to point with the same point will have the visual + * effect of the zoom originating from that point. The point won't move. + * It has nothing to do with canvas center or visual center of the viewport. + * @param {Point} point to zoom with respect to + * @param {Number} value to set zoom to, less than 1 zooms out + * @return {fabric.Canvas} instance + * @chainable true + */ + zoomToPoint: function (point, value) { + // TODO: just change the scale, preserve other transformations + var before = point, vpt = this.viewportTransform.slice(0); + point = transformPoint(point, invertTransform(this.viewportTransform)); + vpt[0] = value; + vpt[3] = value; + var after = transformPoint(point, vpt); + vpt[4] += before.x - after.x; + vpt[5] += before.y - after.y; + return this.setViewportTransform(vpt); + }, + /** + * Sets zoom level of this canvas instance + * @param {Number} value to set zoom to, less than 1 zooms out + * @return {fabric.Canvas} instance + * @chainable true + */ + setZoom: function (value) { + this.zoomToPoint(new Point(0, 0), value); + return this; + }, + /** + * Pan viewport so as to place point at top left corner of canvas + * @param {Point} point to move to + * @return {fabric.Canvas} instance + * @chainable true + */ + absolutePan: function (point) { + var vpt = this.viewportTransform.slice(0); + vpt[4] = -point.x; + vpt[5] = -point.y; + return this.setViewportTransform(vpt); + }, + /** + * Pans viewpoint relatively + * @param {Point} point (position vector) to move by + * @return {fabric.Canvas} instance + * @chainable true + */ + relativePan: function (point) { + return this.absolutePan(new Point(-point.x - this.viewportTransform[4], -point.y - this.viewportTransform[5])); + }, + /** + * Returns <canvas> element corresponding to this instance + * @return {HTMLCanvasElement} + */ + getElement: function () { + return this.lowerCanvasEl; + }, + /** + * @param {...fabric.Object} objects to add + * @return {Self} thisArg + * @chainable + */ + add: function () { + fabric.Collection.add.call(this, arguments, this._onObjectAdded); + arguments.length > 0 && + this.renderOnAddRemove && + this.requestRenderAll(); + return this; + }, + /** + * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`) + * An object should be an instance of (or inherit from) fabric.Object + * @param {fabric.Object|fabric.Object[]} objects Object(s) to insert + * @param {Number} index Index to insert object at + * @param {Boolean} nonSplicing When `true`, no splicing (shifting) of objects occurs + * @return {Self} thisArg + * @chainable + */ + insertAt: function (objects, index) { + fabric.Collection.insertAt.call(this, objects, index, this._onObjectAdded); + (Array.isArray(objects) ? objects.length > 0 : !!objects) && + this.renderOnAddRemove && + this.requestRenderAll(); + return this; + }, + /** + * @param {...fabric.Object} objects to remove + * @return {Self} thisArg + * @chainable + */ + remove: function () { + var removed = fabric.Collection.remove.call(this, arguments, this._onObjectRemoved); + removed.length > 0 && this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + /** + * @private + * @param {fabric.Object} obj Object that was added + */ + _onObjectAdded: function (obj) { + this.stateful && obj.setupState(); + if (obj.canvas && obj.canvas !== this) { + /* _DEV_MODE_START_ */ + console.warn('fabric.Canvas: trying to add an object that belongs to a different canvas.\n' + + 'Resulting to default behavior: removing object from previous canvas and adding to new canvas'); + /* _DEV_MODE_END_ */ + obj.canvas.remove(obj); + } + obj._set('canvas', this); + obj.setCoords(); + this.fire('object:added', { target: obj }); + obj.fire('added', { target: this }); + }, + /** + * @private + * @param {fabric.Object} obj Object that was removed + */ + _onObjectRemoved: function (obj) { + obj._set('canvas', undefined); + this.fire('object:removed', { target: obj }); + obj.fire('removed', { target: this }); + }, + /** + * Clears specified context of canvas element + * @param {CanvasRenderingContext2D} ctx Context to clear + * @return {fabric.Canvas} thisArg + * @chainable + */ + clearContext: function (ctx) { + ctx.clearRect(0, 0, this.width, this.height); + return this; + }, + /** + * Returns context of canvas where objects are drawn + * @return {CanvasRenderingContext2D} + */ + getContext: function () { + return this.contextContainer; + }, + /** + * Clears all contexts (background, main, top) of an instance + * @return {fabric.Canvas} thisArg + * @chainable + */ + clear: function () { + this.remove.apply(this, this.getObjects()); + this.backgroundImage = null; + this.overlayImage = null; + this.backgroundColor = ''; + this.overlayColor = ''; + if (this._hasITextHandlers) { + this.off('mouse:up', this._mouseUpITextHandler); + this._iTextInstances = null; + this._hasITextHandlers = false; + } + this.clearContext(this.contextContainer); + this.fire('canvas:cleared'); + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + /** + * Renders the canvas + * @return {fabric.Canvas} instance + * @chainable + */ + renderAll: function () { + this.cancelRequestedRender(); + if (this.destroyed) { + return; + } + this.renderCanvas(this.contextContainer, this._objects); + return this; + }, + /** + * Function created to be instance bound at initialization + * used in requestAnimationFrame rendering + * Let the fabricJS call it. If you call it manually you could have more + * animationFrame stacking on to of each other + * for an imperative rendering, use canvas.renderAll + * @private + * @return {fabric.Canvas} instance + * @chainable + */ + renderAndReset: function () { + this.nextRenderHandle = 0; + this.renderAll(); + }, + /** + * Append a renderAll request to next animation frame. + * unless one is already in progress, in that case nothing is done + * a boolean flag will avoid appending more. + * @return {fabric.Canvas} instance + * @chainable + */ + requestRenderAll: function () { + if (!this.nextRenderHandle && !this.disposed && !this.destroyed) { + this.nextRenderHandle = requestAnimFrame(this.renderAndResetBound); + } + return this; + }, + /** + * Calculate the position of the 4 corner of canvas with current viewportTransform. + * helps to determinate when an object is in the current rendering viewport using + * object absolute coordinates ( aCoords ) + * @return {Object} points.tl + * @chainable + */ + calcViewportBoundaries: function () { + var width = this.width, height = this.height, iVpt = invertTransform(this.viewportTransform), a = transformPoint({ x: 0, y: 0 }, iVpt), b = transformPoint({ x: width, y: height }, iVpt), + // we don't support vpt flipping + // but the code is robust enough to mostly work with flipping + min = a.min(b), max = a.max(b); + return (this.vptCoords = { + tl: min, + tr: new Point(max.x, min.y), + bl: new Point(min.x, max.y), + br: max, + }); + }, + cancelRequestedRender: function () { + if (this.nextRenderHandle) { + fabric.util.cancelAnimFrame(this.nextRenderHandle); + this.nextRenderHandle = 0; + } + }, + /** + * Renders background, objects, overlay and controls. + * @param {CanvasRenderingContext2D} ctx + * @param {Array} objects to render + * @return {fabric.Canvas} instance + * @chainable + */ + renderCanvas: function (ctx, objects) { + if (this.destroyed) { + return; + } + var v = this.viewportTransform, path = this.clipPath; + this.calcViewportBoundaries(); + this.clearContext(ctx); + ctx.imageSmoothingEnabled = this.imageSmoothingEnabled; + // node-canvas + ctx.patternQuality = 'best'; + this.fire('before:render', { ctx: ctx }); + this._renderBackground(ctx); + ctx.save(); + //apply viewport transform once for all rendering process + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + this._renderObjects(ctx, objects); + ctx.restore(); + if (!this.controlsAboveOverlay && this.interactive) { + this.drawControls(ctx); + } + if (path) { + path._set('canvas', this); + // needed to setup a couple of variables + path.shouldCache(); + path._transformDone = true; + path.renderCache({ forClipping: true }); + this.drawClipPathOnCanvas(ctx); + } + this._renderOverlay(ctx); + if (this.controlsAboveOverlay && this.interactive) { + this.drawControls(ctx); + } + this.fire('after:render', { ctx: ctx }); + if (this.__cleanupTask) { + this.__cleanupTask(); + this.__cleanupTask = undefined; + } + }, + /** + * Paint the cached clipPath on the lowerCanvasEl + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawClipPathOnCanvas: function (ctx) { + var v = this.viewportTransform, path = this.clipPath; + ctx.save(); + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + // DEBUG: uncomment this line, comment the following + // ctx.globalAlpha = 0.4; + ctx.globalCompositeOperation = 'destination-in'; + path.transform(ctx); + ctx.scale(1 / path.zoomX, 1 / path.zoomY); + ctx.drawImage(path._cacheCanvas, -path.cacheTranslationX, -path.cacheTranslationY); + ctx.restore(); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Array} objects to render + */ + _renderObjects: function (ctx, objects) { + var i, len; + for (i = 0, len = objects.length; i < len; ++i) { + objects[i] && objects[i].render(ctx); + } + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {string} property 'background' or 'overlay' + */ + _renderBackgroundOrOverlay: function (ctx, property) { + var fill = this[property + 'Color'], object = this[property + 'Image'], v = this.viewportTransform, needsVpt = this[property + 'Vpt']; + if (!fill && !object) { + return; + } + if (fill) { + ctx.save(); + ctx.beginPath(); + ctx.moveTo(0, 0); + ctx.lineTo(this.width, 0); + ctx.lineTo(this.width, this.height); + ctx.lineTo(0, this.height); + ctx.closePath(); + ctx.fillStyle = fill.toLive ? fill.toLive(ctx, this) : fill; + if (needsVpt) { + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + } + ctx.transform(1, 0, 0, 1, fill.offsetX || 0, fill.offsetY || 0); + var m = fill.gradientTransform || fill.patternTransform; + m && ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); + ctx.fill(); + ctx.restore(); + } + if (object) { + ctx.save(); + if (needsVpt) { + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + } + object.render(ctx); + ctx.restore(); + } + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderBackground: function (ctx) { + this._renderBackgroundOrOverlay(ctx, 'background'); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderOverlay: function (ctx) { + this._renderBackgroundOrOverlay(ctx, 'overlay'); + }, + /** + * Returns coordinates of a center of canvas. + * Returned value is an object with top and left properties + * @return {Object} object with "top" and "left" number values + * @deprecated migrate to `getCenterPoint` + */ + getCenter: function () { + return { + top: this.height / 2, + left: this.width / 2, + }; + }, + /** + * Returns coordinates of a center of canvas. + * @return {Point} + */ + getCenterPoint: function () { + return new Point(this.width / 2, this.height / 2); + }, + /** + * Centers object horizontally in the canvas + * @param {fabric.Object} object Object to center horizontally + * @return {fabric.Canvas} thisArg + */ + centerObjectH: function (object) { + return this._centerObject(object, new Point(this.getCenterPoint().x, object.getCenterPoint().y)); + }, + /** + * Centers object vertically in the canvas + * @param {fabric.Object} object Object to center vertically + * @return {fabric.Canvas} thisArg + * @chainable + */ + centerObjectV: function (object) { + return this._centerObject(object, new Point(object.getCenterPoint().x, this.getCenterPoint().y)); + }, + /** + * Centers object vertically and horizontally in the canvas + * @param {fabric.Object} object Object to center vertically and horizontally + * @return {fabric.Canvas} thisArg + * @chainable + */ + centerObject: function (object) { + var center = this.getCenterPoint(); + return this._centerObject(object, center); + }, + /** + * Centers object vertically and horizontally in the viewport + * @param {fabric.Object} object Object to center vertically and horizontally + * @return {fabric.Canvas} thisArg + * @chainable + */ + viewportCenterObject: function (object) { + var vpCenter = this.getVpCenter(); + return this._centerObject(object, vpCenter); + }, + /** + * Centers object horizontally in the viewport, object.top is unchanged + * @param {fabric.Object} object Object to center vertically and horizontally + * @return {fabric.Canvas} thisArg + * @chainable + */ + viewportCenterObjectH: function (object) { + var vpCenter = this.getVpCenter(); + this._centerObject(object, new Point(vpCenter.x, object.getCenterPoint().y)); + return this; + }, + /** + * Centers object Vertically in the viewport, object.top is unchanged + * @param {fabric.Object} object Object to center vertically and horizontally + * @return {fabric.Canvas} thisArg + * @chainable + */ + viewportCenterObjectV: function (object) { + var vpCenter = this.getVpCenter(); + return this._centerObject(object, new Point(object.getCenterPoint().x, vpCenter.y)); + }, + /** + * Calculate the point in canvas that correspond to the center of actual viewport. + * @return {Point} vpCenter, viewport center + * @chainable + */ + getVpCenter: function () { + var center = this.getCenterPoint(), iVpt = invertTransform(this.viewportTransform); + return transformPoint(center, iVpt); + }, + /** + * @private + * @param {fabric.Object} object Object to center + * @param {Point} center Center point + * @return {fabric.Canvas} thisArg + * @chainable + */ + _centerObject: function (object, center) { + object.setXY(center, 'center', 'center'); + object.setCoords(); + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + /** + * Returns dataless JSON representation of canvas + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {String} json string + */ + toDatalessJSON: function (propertiesToInclude) { + return this.toDatalessObject(propertiesToInclude); + }, + /** + * Returns object representation of canvas + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function (propertiesToInclude) { + return this._toObjectMethod('toObject', propertiesToInclude); + }, + /** + * Returns Object representation of canvas + * this alias is provided because if you call JSON.stringify on an instance, + * the toJSON object will be invoked if it exists. + * Having a toJSON method means you can do JSON.stringify(myCanvas) + * @return {Object} JSON compatible object + * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization} + * @see {@link http://jsfiddle.net/fabricjs/pec86/|jsFiddle demo} + * @example JSON without additional properties + * var json = canvas.toJSON(); + * @example JSON with additional properties included + * var json = canvas.toJSON(['lockMovementX', 'lockMovementY', 'lockRotation', 'lockScalingX', 'lockScalingY']); + * @example JSON without default values + * var json = canvas.toJSON(); + */ + toJSON: function () { + return this.toObject(); + }, + /** + * Returns dataless object representation of canvas + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toDatalessObject: function (propertiesToInclude) { + return this._toObjectMethod('toDatalessObject', propertiesToInclude); + }, + /** + * @private + */ + _toObjectMethod: function (methodName, propertiesToInclude) { + const clipPath = this.clipPath; + const clipPathData = clipPath && !clipPath.excludeFromExport + ? this._toObject(clipPath, methodName, propertiesToInclude) + : null; + return Object.assign(Object.assign(Object.assign(Object.assign({ version: version }, pick(this, propertiesToInclude)), { objects: this._objects + .filter((object) => !object.excludeFromExport) + .map((instance) => this._toObject(instance, methodName, propertiesToInclude)) }), this.__serializeBgOverlay(methodName, propertiesToInclude)), (clipPathData ? { clipPath: clipPathData } : null)); + }, + /** + * @private + */ + _toObject: function (instance, methodName, propertiesToInclude) { + var originalValue; + if (!this.includeDefaultValues) { + originalValue = instance.includeDefaultValues; + instance.includeDefaultValues = false; + } + var object = instance[methodName](propertiesToInclude); + if (!this.includeDefaultValues) { + instance.includeDefaultValues = originalValue; + } + return object; + }, + /** + * @private + */ + __serializeBgOverlay: function (methodName, propertiesToInclude) { + var data = {}, bgImage = this.backgroundImage, overlayImage = this.overlayImage, bgColor = this.backgroundColor, overlayColor = this.overlayColor; + if (bgColor && bgColor.toObject) { + if (!bgColor.excludeFromExport) { + data.background = bgColor.toObject(propertiesToInclude); + } + } + else if (bgColor) { + data.background = bgColor; + } + if (overlayColor && overlayColor.toObject) { + if (!overlayColor.excludeFromExport) { + data.overlay = overlayColor.toObject(propertiesToInclude); + } + } + else if (overlayColor) { + data.overlay = overlayColor; + } + if (bgImage && !bgImage.excludeFromExport) { + data.backgroundImage = this._toObject(bgImage, methodName, propertiesToInclude); + } + if (overlayImage && !overlayImage.excludeFromExport) { + data.overlayImage = this._toObject(overlayImage, methodName, propertiesToInclude); + } + return data; + }, + /* _TO_SVG_START_ */ + /** + * When true, getSvgTransform() will apply the StaticCanvas.viewportTransform to the SVG transformation. When true, + * a zoomed canvas will then produce zoomed SVG output. + * @type Boolean + * @default + */ + svgViewportTransformation: true, + /** + * Returns SVG representation of canvas + * @function + * @param {Object} [options] Options object for SVG output + * @param {Boolean} [options.suppressPreamble=false] If true xml tag is not included + * @param {Object} [options.viewBox] SVG viewbox object + * @param {Number} [options.viewBox.x] x-coordinate of viewbox + * @param {Number} [options.viewBox.y] y-coordinate of viewbox + * @param {Number} [options.viewBox.width] Width of viewbox + * @param {Number} [options.viewBox.height] Height of viewbox + * @param {String} [options.encoding=UTF-8] Encoding of SVG output + * @param {String} [options.width] desired width of svg with or without units + * @param {String} [options.height] desired height of svg with or without units + * @param {Function} [reviver] Method for further parsing of svg elements, called after each fabric object converted into svg representation. + * @return {String} SVG string + * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization} + * @see {@link http://jsfiddle.net/fabricjs/jQ3ZZ/|jsFiddle demo} + * @example Normal SVG output + * var svg = canvas.toSVG(); + * @example SVG output without preamble (without <?xml ../>) + * var svg = canvas.toSVG({suppressPreamble: true}); + * @example SVG output with viewBox attribute + * var svg = canvas.toSVG({ + * viewBox: { + * x: 100, + * y: 100, + * width: 200, + * height: 300 + * } + * }); + * @example SVG output with different encoding (default: UTF-8) + * var svg = canvas.toSVG({encoding: 'ISO-8859-1'}); + * @example Modify SVG output with reviver function + * var svg = canvas.toSVG(null, function(svg) { + * return svg.replace('stroke-dasharray: ; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; ', ''); + * }); + */ + toSVG: function (options, reviver) { + options || (options = {}); + options.reviver = reviver; + var markup = []; + this._setSVGPreamble(markup, options); + this._setSVGHeader(markup, options); + if (this.clipPath) { + markup.push('\n'); + } + this._setSVGBgOverlayColor(markup, 'background'); + this._setSVGBgOverlayImage(markup, 'backgroundImage', reviver); + this._setSVGObjects(markup, reviver); + if (this.clipPath) { + markup.push('\n'); + } + this._setSVGBgOverlayColor(markup, 'overlay'); + this._setSVGBgOverlayImage(markup, 'overlayImage', reviver); + markup.push(''); + return markup.join(''); + }, + /** + * @private + */ + _setSVGPreamble: function (markup, options) { + if (options.suppressPreamble) { + return; + } + markup.push('\n', '\n'); + }, + /** + * @private + */ + _setSVGHeader: function (markup, options) { + var width = options.width || this.width, height = options.height || this.height, vpt, viewBox = 'viewBox="0 0 ' + this.width + ' ' + this.height + '" ', NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; + if (options.viewBox) { + viewBox = + 'viewBox="' + + options.viewBox.x + + ' ' + + options.viewBox.y + + ' ' + + options.viewBox.width + + ' ' + + options.viewBox.height + + '" '; + } + else { + if (this.svgViewportTransformation) { + vpt = this.viewportTransform; + viewBox = + 'viewBox="' + + toFixed(-vpt[4] / vpt[0], NUM_FRACTION_DIGITS) + + ' ' + + toFixed(-vpt[5] / vpt[3], NUM_FRACTION_DIGITS) + + ' ' + + toFixed(this.width / vpt[0], NUM_FRACTION_DIGITS) + + ' ' + + toFixed(this.height / vpt[3], NUM_FRACTION_DIGITS) + + '" '; + } + } + markup.push('\n', 'Created with Fabric.js ', version, '\n', '\n', this.createSVGFontFacesMarkup(), this.createSVGRefElementsMarkup(), this.createSVGClipPathMarkup(options), '\n'); + }, + createSVGClipPathMarkup: function (options) { + var clipPath = this.clipPath; + if (clipPath) { + clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++; + return ('\n' + + this.clipPath.toClipPathSVG(options.reviver) + + '\n'); + } + return ''; + }, + /** + * Creates markup containing SVG referenced elements like patterns, gradients etc. + * @return {String} + */ + createSVGRefElementsMarkup: function () { + var _this = this, markup = ['background', 'overlay'].map(function (prop) { + var fill = _this[prop + 'Color']; + if (fill && fill.toLive) { + var shouldTransform = _this[prop + 'Vpt'], vpt = _this.viewportTransform, object = { + width: _this.width / (shouldTransform ? vpt[0] : 1), + height: _this.height / (shouldTransform ? vpt[3] : 1), + }; + return fill.toSVG(object, { + additionalTransform: shouldTransform + ? fabric.util.matrixToSVG(vpt) + : '', + }); + } + }); + return markup.join(''); + }, + /** + * Creates markup containing SVG font faces, + * font URLs for font faces must be collected by developers + * and are not extracted from the DOM by fabricjs + * @param {Array} objects Array of fabric objects + * @return {String} + */ + createSVGFontFacesMarkup: function () { + var markup = '', fontList = {}, obj, fontFamily, style, row, rowIndex, _char, charIndex, i, len, fontPaths = config.fontPaths, objects = []; + this._objects.forEach(function add(object) { + objects.push(object); + if (object._objects) { + object._objects.forEach(add); + } + }); + for (i = 0, len = objects.length; i < len; i++) { + obj = objects[i]; + fontFamily = obj.fontFamily; + if (obj.type.indexOf('text') === -1 || + fontList[fontFamily] || + !fontPaths[fontFamily]) { + continue; + } + fontList[fontFamily] = true; + if (!obj.styles) { + continue; + } + style = obj.styles; + for (rowIndex in style) { + row = style[rowIndex]; + for (charIndex in row) { + _char = row[charIndex]; + fontFamily = _char.fontFamily; + if (!fontList[fontFamily] && fontPaths[fontFamily]) { + fontList[fontFamily] = true; + } + } + } + } + for (var j in fontList) { + markup += [ + '\t\t@font-face {\n', + "\t\t\tfont-family: '", + j, + "';\n", + "\t\t\tsrc: url('", + fontPaths[j], + "');\n", + '\t\t}\n', + ].join(''); + } + if (markup) { + markup = [ + '\t\n', + ].join(''); + } + return markup; + }, + /** + * @private + */ + _setSVGObjects: function (markup, reviver) { + var instance, i, len, objects = this._objects; + for (i = 0, len = objects.length; i < len; i++) { + instance = objects[i]; + if (instance.excludeFromExport) { + continue; + } + this._setSVGObject(markup, instance, reviver); + } + }, + /** + * @private + */ + _setSVGObject: function (markup, instance, reviver) { + markup.push(instance.toSVG(reviver)); + }, + /** + * @private + */ + _setSVGBgOverlayImage: function (markup, property, reviver) { + if (this[property] && + !this[property].excludeFromExport && + this[property].toSVG) { + markup.push(this[property].toSVG(reviver)); + } + }, + /** + * @private + */ + _setSVGBgOverlayColor: function (markup, property) { + var filler = this[property + 'Color'], vpt = this.viewportTransform, finalWidth = this.width, finalHeight = this.height; + if (!filler) { + return; + } + if (filler.toLive) { + var repeat = filler.repeat, iVpt = fabric.util.invertTransform(vpt), shouldInvert = this[property + 'Vpt'], additionalTransform = shouldInvert + ? fabric.util.matrixToSVG(iVpt) + : ''; + markup.push('\n'); + } + else { + markup.push('\n'); + } + }, + /* _TO_SVG_END_ */ + /** + * Moves an object or the objects of a multiple selection + * to the bottom of the stack of drawn objects + * @param {fabric.Object} object Object to send to back + * @return {fabric.Canvas} thisArg + * @chainable + */ + sendToBack: function (object) { + if (!object) { + return this; + } + var activeSelection = this._activeObject, i, obj, objs; + if (object === activeSelection && object.type === 'activeSelection') { + objs = activeSelection._objects; + for (i = objs.length; i--;) { + obj = objs[i]; + removeFromArray(this._objects, obj); + this._objects.unshift(obj); + } + } + else { + removeFromArray(this._objects, object); + this._objects.unshift(object); + } + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + /** + * Moves an object or the objects of a multiple selection + * to the top of the stack of drawn objects + * @param {fabric.Object} object Object to send + * @return {fabric.Canvas} thisArg + * @chainable + */ + bringToFront: function (object) { + if (!object) { + return this; + } + var activeSelection = this._activeObject, i, obj, objs; + if (object === activeSelection && object.type === 'activeSelection') { + objs = activeSelection._objects; + for (i = 0; i < objs.length; i++) { + obj = objs[i]; + removeFromArray(this._objects, obj); + this._objects.push(obj); + } + } + else { + removeFromArray(this._objects, object); + this._objects.push(object); + } + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + /** + * Moves an object or a selection down in stack of drawn objects + * An optional parameter, intersecting allows to move the object in behind + * the first intersecting object. Where intersection is calculated with + * bounding box. If no intersection is found, there will not be change in the + * stack. + * @param {fabric.Object} object Object to send + * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object + * @return {fabric.Canvas} thisArg + * @chainable + */ + sendBackwards: function (object, intersecting) { + if (!object) { + return this; + } + var activeSelection = this._activeObject, i, obj, idx, newIdx, objs, objsMoved = 0; + if (object === activeSelection && object.type === 'activeSelection') { + objs = activeSelection._objects; + for (i = 0; i < objs.length; i++) { + obj = objs[i]; + idx = this._objects.indexOf(obj); + if (idx > 0 + objsMoved) { + newIdx = idx - 1; + removeFromArray(this._objects, obj); + this._objects.splice(newIdx, 0, obj); + } + objsMoved++; + } + } + else { + idx = this._objects.indexOf(object); + if (idx !== 0) { + // if object is not on the bottom of stack + newIdx = this._findNewLowerIndex(object, idx, intersecting); + removeFromArray(this._objects, object); + this._objects.splice(newIdx, 0, object); + } + } + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + /** + * @private + */ + _findNewLowerIndex: function (object, idx, intersecting) { + var newIdx, i; + if (intersecting) { + newIdx = idx; + // traverse down the stack looking for the nearest intersecting object + for (i = idx - 1; i >= 0; --i) { + var isIntersecting = object.intersectsWithObject(this._objects[i]) || + object.isContainedWithinObject(this._objects[i]) || + this._objects[i].isContainedWithinObject(object); + if (isIntersecting) { + newIdx = i; + break; + } + } + } + else { + newIdx = idx - 1; + } + return newIdx; + }, + /** + * Moves an object or a selection up in stack of drawn objects + * An optional parameter, intersecting allows to move the object in front + * of the first intersecting object. Where intersection is calculated with + * bounding box. If no intersection is found, there will not be change in the + * stack. + * @param {fabric.Object} object Object to send + * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object + * @return {fabric.Canvas} thisArg + * @chainable + */ + bringForward: function (object, intersecting) { + if (!object) { + return this; + } + var activeSelection = this._activeObject, i, obj, idx, newIdx, objs, objsMoved = 0; + if (object === activeSelection && object.type === 'activeSelection') { + objs = activeSelection._objects; + for (i = objs.length; i--;) { + obj = objs[i]; + idx = this._objects.indexOf(obj); + if (idx < this._objects.length - 1 - objsMoved) { + newIdx = idx + 1; + removeFromArray(this._objects, obj); + this._objects.splice(newIdx, 0, obj); + } + objsMoved++; + } + } + else { + idx = this._objects.indexOf(object); + if (idx !== this._objects.length - 1) { + // if object is not on top of stack (last item in an array) + newIdx = this._findNewUpperIndex(object, idx, intersecting); + removeFromArray(this._objects, object); + this._objects.splice(newIdx, 0, object); + } + } + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + /** + * @private + */ + _findNewUpperIndex: function (object, idx, intersecting) { + var newIdx, i, len; + if (intersecting) { + newIdx = idx; + // traverse up the stack looking for the nearest intersecting object + for (i = idx + 1, len = this._objects.length; i < len; ++i) { + var isIntersecting = object.intersectsWithObject(this._objects[i]) || + object.isContainedWithinObject(this._objects[i]) || + this._objects[i].isContainedWithinObject(object); + if (isIntersecting) { + newIdx = i; + break; + } + } + } + else { + newIdx = idx + 1; + } + return newIdx; + }, + /** + * Moves an object to specified level in stack of drawn objects + * @param {fabric.Object} object Object to send + * @param {Number} index Position to move to + * @return {fabric.Canvas} thisArg + * @chainable + */ + moveTo: function (object, index) { + removeFromArray(this._objects, object); + this._objects.splice(index, 0, object); + return this.renderOnAddRemove && this.requestRenderAll(); + }, + /** + * Waits until rendering has settled to destroy the canvas + * @returns {Promise} a promise resolving to `true` once the canvas has been destroyed or to `false` if the canvas has was already destroyed + * @throws if aborted by a consequent call + */ + dispose: function () { + this.disposed = true; + return new Promise((resolve, reject) => { + const task = () => { + this.destroy(); + resolve(true); + }; + task.kill = reject; + if (this.__cleanupTask) { + this.__cleanupTask.kill('aborted'); + } + if (this.destroyed) { + resolve(false); + } + else if (this.nextRenderHandle) { + this.__cleanupTask = task; + } + else { + task(); + } + }); + }, + /** + * Clears the canvas element, disposes objects and frees resources + * + * **CAUTION**: + * + * This method is **UNSAFE**. + * You may encounter a race condition using it if there's a requested render. + * Call this method only if you are sure rendering has settled. + * Consider using {@link dispose} as it is **SAFE** + * + * @private + */ + destroy: function () { + this.destroyed = true; + this.cancelRequestedRender(); + this.forEachObject(function (object) { + object.dispose && object.dispose(); + }); + this._objects = []; + if (this.backgroundImage && this.backgroundImage.dispose) { + this.backgroundImage.dispose(); + } + this.backgroundImage = null; + if (this.overlayImage && this.overlayImage.dispose) { + this.overlayImage.dispose(); + } + this.overlayImage = null; + this._iTextInstances = null; + this.contextContainer = null; + // restore canvas style and attributes + this.lowerCanvasEl.classList.remove('lower-canvas'); + this.lowerCanvasEl.removeAttribute('data-fabric'); + if (this.interactive) { + this.lowerCanvasEl.style.cssText = this._originalCanvasStyle; + delete this._originalCanvasStyle; + } + // restore canvas size to original size in case retina scaling was applied + this.lowerCanvasEl.setAttribute('width', this.width); + this.lowerCanvasEl.setAttribute('height', this.height); + fabric.util.cleanUpJsdomNode(this.lowerCanvasEl); + this.lowerCanvasEl = undefined; + }, + /** + * Returns a string representation of an instance + * @return {String} string representation of an instance + */ + toString: function () { + return ('#'); + }, + }); + extend(fabric.StaticCanvas.prototype, fabric.Observable); + extend(fabric.StaticCanvas.prototype, fabric.DataURLExporter); + extend(fabric.StaticCanvas, + /** @lends fabric.StaticCanvas */ { + /** + * @static + * @type String + * @default + */ + EMPTY_JSON: '{"objects": [], "background": "white"}', + /** + * Provides a way to check support of some of the canvas methods + * (either those of HTMLCanvasElement itself, or rendering context) + * + * @param {String} methodName Method to check support for; + * Could be one of "setLineDash" + * @return {Boolean | null} `true` if method is supported (or at least exists), + * `null` if canvas element or context can not be initialized + */ + supports: function (methodName) { + var el = createCanvasElement(); + if (!el || !el.getContext) { + return null; + } + var ctx = el.getContext('2d'); + if (!ctx) { + return null; + } + switch (methodName) { + case 'setLineDash': + return typeof ctx.setLineDash !== 'undefined'; + default: + return null; + } + }, + }); + if (fabric.isLikelyNode) { + fabric.StaticCanvas.prototype.createPNGStream = function () { + var impl = getNodeCanvas(this.lowerCanvasEl); + return impl && impl.createPNGStream(); + }; + fabric.StaticCanvas.prototype.createJPEGStream = function (opts) { + var impl = getNodeCanvas(this.lowerCanvasEl); + return impl && impl.createJPEGStream(opts); + }; + } +})(typeof exports !== 'undefined' ? exports : window); +//@ts-nocheck +(function (global) { + var fabric = global.fabric, getPointer = fabric.util.getPointer, degreesToRadians = fabric.util.degreesToRadians, isTouchEvent = fabric.util.isTouchEvent; /** - * Sets value of alpha channel for this color - * @param {Number} alpha Alpha value 0-1 - * @return {fabric.Color} thisArg + * Canvas class + * @class fabric.Canvas + * @extends fabric.StaticCanvas + * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#canvas} + * @see {@link fabric.Canvas#initialize} for constructor definition + * + * @fires object:modified at the end of a transform or any change when statefull is true + * @fires object:rotating while an object is being rotated from the control + * @fires object:scaling while an object is being scaled by controls + * @fires object:moving while an object is being dragged + * @fires object:skewing while an object is being skewed from the controls + * + * @fires before:transform before a transform is is started + * @fires before:selection:cleared + * @fires selection:cleared + * @fires selection:updated + * @fires selection:created + * + * @fires path:created after a drawing operation ends and the path is added + * @fires mouse:down + * @fires mouse:move + * @fires mouse:up + * @fires mouse:down:before on mouse down, before the inner fabric logic runs + * @fires mouse:move:before on mouse move, before the inner fabric logic runs + * @fires mouse:up:before on mouse up, before the inner fabric logic runs + * @fires mouse:over + * @fires mouse:out + * @fires mouse:dblclick whenever a native dbl click event fires on the canvas. + * + * @fires dragover + * @fires dragenter + * @fires dragleave + * @fires drag:enter object drag enter + * @fires drag:leave object drag leave + * @fires drop:before before drop event. Prepare for the drop event (same native event). + * @fires drop + * @fires drop:after after drop event. Run logic on canvas after event has been accepted/declined (same native event). + * @example + * let a: fabric.Object, b: fabric.Object; + * let flag = false; + * canvas.add(a, b); + * a.on('drop:before', opt => { + * // we want a to accept the drop even though it's below b in the stack + * flag = this.canDrop(opt.e); + * }); + * b.canDrop = function(e) { + * !flag && this.callSuper('canDrop', e); + * } + * b.on('dragover', opt => b.set('fill', opt.dropTarget === b ? 'pink' : 'black')); + * a.on('drop', opt => { + * opt.e.defaultPrevented // drop occured + * opt.didDrop // drop occured on canvas + * opt.target // drop target + * opt.target !== a && a.set('text', 'I lost'); + * }); + * canvas.on('drop:after', opt => { + * // inform user who won + * if(!opt.e.defaultPrevented) { + * // no winners + * } + * else if(!opt.didDrop) { + * // my objects didn't win, some other lucky object + * } + * else { + * // we have a winner it's opt.target!! + * } + * }) + * + * @fires after:render at the end of the render process, receives the context in the callback + * @fires before:render at start the render process, receives the context in the callback + * + * @fires contextmenu:before + * @fires contextmenu + * @example + * let handler; + * targets.forEach(target => { + * target.on('contextmenu:before', opt => { + * // decide which target should handle the event before canvas hijacks it + * if (someCaseHappens && opt.targets.includes(target)) { + * handler = target; + * } + * }); + * target.on('contextmenu', opt => { + * // do something fantastic + * }); + * }); + * canvas.on('contextmenu', opt => { + * if (!handler) { + * // no one takes responsibility, it's always left to me + * // let's show them how it's done! + * } + * }); + * */ - setAlpha: function(alpha) { - var source = this.getSource(); - source[3] = alpha; - this.setSource(source); - return this; - }, - - /** - * Transforms color to its grayscale representation - * @return {fabric.Color} thisArg - */ - toGrayscale: function() { - var source = this.getSource(), - average = parseInt((source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0), 10), - currentAlpha = source[3]; - this.setSource([average, average, average, currentAlpha]); - return this; - }, - - /** - * Transforms color to its black and white representation - * @param {Number} threshold - * @return {fabric.Color} thisArg - */ - toBlackWhite: function(threshold) { - var source = this.getSource(), - average = (source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0), - currentAlpha = source[3]; - - threshold = threshold || 127; - - average = (Number(average) < Number(threshold)) ? 0 : 255; - this.setSource([average, average, average, currentAlpha]); - return this; - }, - - /** - * Overlays color with another color - * @param {String|fabric.Color} otherColor - * @return {fabric.Color} thisArg - */ - overlayWith: function(otherColor) { - if (!(otherColor instanceof Color)) { - otherColor = new Color(otherColor); - } - - var result = [], - alpha = this.getAlpha(), - otherAlpha = 0.5, - source = this.getSource(), - otherSource = otherColor.getSource(), i; - - for (i = 0; i < 3; i++) { - result.push(Math.round((source[i] * (1 - otherAlpha)) + (otherSource[i] * otherAlpha))); - } - - result[3] = alpha; - this.setSource(result); - return this; - } - }; - - /** - * Regex matching color in RGB or RGBA formats (ex: rgb(0, 0, 0), rgba(255, 100, 10, 0.5), rgba( 255 , 100 , 10 , 0.5 ), rgb(1,1,1), rgba(100%, 60%, 10%, 0.5)) - * @static - * @field - * @memberOf fabric.Color - */ - // eslint-disable-next-line max-len - fabric.Color.reRGBa = /^rgba?\(\s*(\d{1,3}(?:\.\d+)?\%?)\s*,\s*(\d{1,3}(?:\.\d+)?\%?)\s*,\s*(\d{1,3}(?:\.\d+)?\%?)\s*(?:\s*,\s*((?:\d*\.?\d+)?)\s*)?\)$/i; - - /** - * Regex matching color in HSL or HSLA formats (ex: hsl(200, 80%, 10%), hsla(300, 50%, 80%, 0.5), hsla( 300 , 50% , 80% , 0.5 )) - * @static - * @field - * @memberOf fabric.Color - */ - fabric.Color.reHSLa = /^hsla?\(\s*(\d{1,3})\s*,\s*(\d{1,3}\%)\s*,\s*(\d{1,3}\%)\s*(?:\s*,\s*(\d+(?:\.\d+)?)\s*)?\)$/i; - - /** - * Regex matching color in HEX format (ex: #FF5544CC, #FF5555, 010155, aff) - * @static - * @field - * @memberOf fabric.Color - */ - fabric.Color.reHex = /^#?([0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{4}|[0-9a-f]{3})$/i; - - /** - * Map of the 148 color names with HEX code - * @static - * @field - * @memberOf fabric.Color - * @see: https://www.w3.org/TR/css3-color/#svg-color - */ - fabric.Color.colorNameMap = { - aliceblue: '#F0F8FF', - antiquewhite: '#FAEBD7', - aqua: '#00FFFF', - aquamarine: '#7FFFD4', - azure: '#F0FFFF', - beige: '#F5F5DC', - bisque: '#FFE4C4', - black: '#000000', - blanchedalmond: '#FFEBCD', - blue: '#0000FF', - blueviolet: '#8A2BE2', - brown: '#A52A2A', - burlywood: '#DEB887', - cadetblue: '#5F9EA0', - chartreuse: '#7FFF00', - chocolate: '#D2691E', - coral: '#FF7F50', - cornflowerblue: '#6495ED', - cornsilk: '#FFF8DC', - crimson: '#DC143C', - cyan: '#00FFFF', - darkblue: '#00008B', - darkcyan: '#008B8B', - darkgoldenrod: '#B8860B', - darkgray: '#A9A9A9', - darkgrey: '#A9A9A9', - darkgreen: '#006400', - darkkhaki: '#BDB76B', - darkmagenta: '#8B008B', - darkolivegreen: '#556B2F', - darkorange: '#FF8C00', - darkorchid: '#9932CC', - darkred: '#8B0000', - darksalmon: '#E9967A', - darkseagreen: '#8FBC8F', - darkslateblue: '#483D8B', - darkslategray: '#2F4F4F', - darkslategrey: '#2F4F4F', - darkturquoise: '#00CED1', - darkviolet: '#9400D3', - deeppink: '#FF1493', - deepskyblue: '#00BFFF', - dimgray: '#696969', - dimgrey: '#696969', - dodgerblue: '#1E90FF', - firebrick: '#B22222', - floralwhite: '#FFFAF0', - forestgreen: '#228B22', - fuchsia: '#FF00FF', - gainsboro: '#DCDCDC', - ghostwhite: '#F8F8FF', - gold: '#FFD700', - goldenrod: '#DAA520', - gray: '#808080', - grey: '#808080', - green: '#008000', - greenyellow: '#ADFF2F', - honeydew: '#F0FFF0', - hotpink: '#FF69B4', - indianred: '#CD5C5C', - indigo: '#4B0082', - ivory: '#FFFFF0', - khaki: '#F0E68C', - lavender: '#E6E6FA', - lavenderblush: '#FFF0F5', - lawngreen: '#7CFC00', - lemonchiffon: '#FFFACD', - lightblue: '#ADD8E6', - lightcoral: '#F08080', - lightcyan: '#E0FFFF', - lightgoldenrodyellow: '#FAFAD2', - lightgray: '#D3D3D3', - lightgrey: '#D3D3D3', - lightgreen: '#90EE90', - lightpink: '#FFB6C1', - lightsalmon: '#FFA07A', - lightseagreen: '#20B2AA', - lightskyblue: '#87CEFA', - lightslategray: '#778899', - lightslategrey: '#778899', - lightsteelblue: '#B0C4DE', - lightyellow: '#FFFFE0', - lime: '#00FF00', - limegreen: '#32CD32', - linen: '#FAF0E6', - magenta: '#FF00FF', - maroon: '#800000', - mediumaquamarine: '#66CDAA', - mediumblue: '#0000CD', - mediumorchid: '#BA55D3', - mediumpurple: '#9370DB', - mediumseagreen: '#3CB371', - mediumslateblue: '#7B68EE', - mediumspringgreen: '#00FA9A', - mediumturquoise: '#48D1CC', - mediumvioletred: '#C71585', - midnightblue: '#191970', - mintcream: '#F5FFFA', - mistyrose: '#FFE4E1', - moccasin: '#FFE4B5', - navajowhite: '#FFDEAD', - navy: '#000080', - oldlace: '#FDF5E6', - olive: '#808000', - olivedrab: '#6B8E23', - orange: '#FFA500', - orangered: '#FF4500', - orchid: '#DA70D6', - palegoldenrod: '#EEE8AA', - palegreen: '#98FB98', - paleturquoise: '#AFEEEE', - palevioletred: '#DB7093', - papayawhip: '#FFEFD5', - peachpuff: '#FFDAB9', - peru: '#CD853F', - pink: '#FFC0CB', - plum: '#DDA0DD', - powderblue: '#B0E0E6', - purple: '#800080', - rebeccapurple: '#663399', - red: '#FF0000', - rosybrown: '#BC8F8F', - royalblue: '#4169E1', - saddlebrown: '#8B4513', - salmon: '#FA8072', - sandybrown: '#F4A460', - seagreen: '#2E8B57', - seashell: '#FFF5EE', - sienna: '#A0522D', - silver: '#C0C0C0', - skyblue: '#87CEEB', - slateblue: '#6A5ACD', - slategray: '#708090', - slategrey: '#708090', - snow: '#FFFAFA', - springgreen: '#00FF7F', - steelblue: '#4682B4', - tan: '#D2B48C', - teal: '#008080', - thistle: '#D8BFD8', - tomato: '#FF6347', - turquoise: '#40E0D0', - violet: '#EE82EE', - wheat: '#F5DEB3', - white: '#FFFFFF', - whitesmoke: '#F5F5F5', - yellow: '#FFFF00', - yellowgreen: '#9ACD32' - }; - - /** - * @private - * @param {Number} p - * @param {Number} q - * @param {Number} t - * @return {Number} - */ - function hue2rgb(p, q, t) { - if (t < 0) { - t += 1; - } - if (t > 1) { - t -= 1; - } - if (t < 1 / 6) { - return p + (q - p) * 6 * t; - } - if (t < 1 / 2) { - return q; - } - if (t < 2 / 3) { - return p + (q - p) * (2 / 3 - t) * 6; - } - return p; - } - - /** - * Returns new color object, when given a color in RGB format - * @memberOf fabric.Color - * @param {String} color Color value ex: rgb(0-255,0-255,0-255) - * @return {fabric.Color} - */ - fabric.Color.fromRgb = function(color) { - return Color.fromSource(Color.sourceFromRgb(color)); - }; - - /** - * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in RGB or RGBA format - * @memberOf fabric.Color - * @param {String} color Color value ex: rgb(0-255,0-255,0-255), rgb(0%-100%,0%-100%,0%-100%) - * @return {Array} source - */ - fabric.Color.sourceFromRgb = function(color) { - var match = color.match(Color.reRGBa); - if (match) { - var r = parseInt(match[1], 10) / (/%$/.test(match[1]) ? 100 : 1) * (/%$/.test(match[1]) ? 255 : 1), - g = parseInt(match[2], 10) / (/%$/.test(match[2]) ? 100 : 1) * (/%$/.test(match[2]) ? 255 : 1), - b = parseInt(match[3], 10) / (/%$/.test(match[3]) ? 100 : 1) * (/%$/.test(match[3]) ? 255 : 1); - - return [ - parseInt(r, 10), - parseInt(g, 10), - parseInt(b, 10), - match[4] ? parseFloat(match[4]) : 1 - ]; - } - }; - - /** - * Returns new color object, when given a color in RGBA format - * @static - * @function - * @memberOf fabric.Color - * @param {String} color - * @return {fabric.Color} - */ - fabric.Color.fromRgba = Color.fromRgb; - - /** - * Returns new color object, when given a color in HSL format - * @param {String} color Color value ex: hsl(0-260,0%-100%,0%-100%) - * @memberOf fabric.Color - * @return {fabric.Color} - */ - fabric.Color.fromHsl = function(color) { - return Color.fromSource(Color.sourceFromHsl(color)); - }; - - /** - * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HSL or HSLA format. - * Adapted from https://github.com/mjijackson - * @memberOf fabric.Color - * @param {String} color Color value ex: hsl(0-360,0%-100%,0%-100%) or hsla(0-360,0%-100%,0%-100%, 0-1) - * @return {Array} source - * @see http://http://www.w3.org/TR/css3-color/#hsl-color - */ - fabric.Color.sourceFromHsl = function(color) { - var match = color.match(Color.reHSLa); - if (!match) { - return; - } - - var h = (((parseFloat(match[1]) % 360) + 360) % 360) / 360, - s = parseFloat(match[2]) / (/%$/.test(match[2]) ? 100 : 1), - l = parseFloat(match[3]) / (/%$/.test(match[3]) ? 100 : 1), - r, g, b; - - if (s === 0) { - r = g = b = l; - } - else { - var q = l <= 0.5 ? l * (s + 1) : l + s - l * s, - p = l * 2 - q; - - r = hue2rgb(p, q, h + 1 / 3); - g = hue2rgb(p, q, h); - b = hue2rgb(p, q, h - 1 / 3); + fabric.Canvas = fabric.util.createClass(fabric.StaticCanvas, + /** @lends fabric.Canvas.prototype */ { + /** + * Constructor + * @param {HTMLElement | String} el <canvas> element to initialize instance on + * @param {Object} [options] Options object + * @return {Object} thisArg + */ + initialize: function (el, options) { + options || (options = {}); + this.renderAndResetBound = this.renderAndReset.bind(this); + this.requestRenderAllBound = this.requestRenderAll.bind(this); + this._initStatic(el, options); + this._initInteractive(); + this._createCacheCanvas(); + }, + /** + * When true, objects can be transformed by one side (unproportionally) + * when dragged on the corners that normally would not do that. + * @type Boolean + * @default + * @since fabric 4.0 // changed name and default value + */ + uniformScaling: true, + /** + * Indicates which key switches uniform scaling. + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * If `null` or 'none' or any other string that is not a modifier key + * feature is disabled. + * totally wrong named. this sounds like `uniform scaling` + * if Canvas.uniformScaling is true, pressing this will set it to false + * and viceversa. + * @since 1.6.2 + * @type String + * @default + */ + uniScaleKey: 'shiftKey', + /** + * When true, objects use center point as the origin of scale transformation. + * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). + * @since 1.3.4 + * @type Boolean + * @default + */ + centeredScaling: false, + /** + * When true, objects use center point as the origin of rotate transformation. + * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). + * @since 1.3.4 + * @type Boolean + * @default + */ + centeredRotation: false, + /** + * Indicates which key enable centered Transform + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * If `null` or 'none' or any other string that is not a modifier key + * feature is disabled feature disabled. + * @since 1.6.2 + * @type String + * @default + */ + centeredKey: 'altKey', + /** + * Indicates which key enable alternate action on corner + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * If `null` or 'none' or any other string that is not a modifier key + * feature is disabled feature disabled. + * @since 1.6.2 + * @type String + * @default + */ + altActionKey: 'shiftKey', + /** + * Indicates that canvas is interactive. This property should not be changed. + * @type Boolean + * @default + */ + interactive: true, + /** + * Indicates whether group selection should be enabled + * @type Boolean + * @default + */ + selection: true, + /** + * Indicates which key or keys enable multiple click selection + * Pass value as a string or array of strings + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * If `null` or empty or containing any other string that is not a modifier key + * feature is disabled. + * @since 1.6.2 + * @type String|Array + * @default + */ + selectionKey: 'shiftKey', + /** + * Indicates which key enable alternative selection + * in case of target overlapping with active object + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * For a series of reason that come from the general expectations on how + * things should work, this feature works only for preserveObjectStacking true. + * If `null` or 'none' or any other string that is not a modifier key + * feature is disabled. + * @since 1.6.5 + * @type null|String + * @default + */ + altSelectionKey: null, + /** + * Color of selection + * @type String + * @default + */ + selectionColor: 'rgba(100, 100, 255, 0.3)', + /** + * Default dash array pattern + * If not empty the selection border is dashed + * @type Array + */ + selectionDashArray: [], + /** + * Color of the border of selection (usually slightly darker than color of selection itself) + * @type String + * @default + */ + selectionBorderColor: 'rgba(255, 255, 255, 0.3)', + /** + * Width of a line used in object/group selection + * @type Number + * @default + */ + selectionLineWidth: 1, + /** + * Select only shapes that are fully contained in the dragged selection rectangle. + * @type Boolean + * @default + */ + selectionFullyContained: false, + /** + * Default cursor value used when hovering over an object on canvas + * @type String + * @default + */ + hoverCursor: 'move', + /** + * Default cursor value used when moving an object on canvas + * @type String + * @default + */ + moveCursor: 'move', + /** + * Default cursor value used for the entire canvas + * @type String + * @default + */ + defaultCursor: 'default', + /** + * Cursor value used during free drawing + * @type String + * @default + */ + freeDrawingCursor: 'crosshair', + /** + * Cursor value used for disabled elements ( corners with disabled action ) + * @type String + * @since 2.0.0 + * @default + */ + notAllowedCursor: 'not-allowed', + /** + * Default element class that's given to wrapper (div) element of canvas + * @type String + * @default + */ + containerClass: 'canvas-container', + /** + * When true, object detection happens on per-pixel basis rather than on per-bounding-box + * @type Boolean + * @default + */ + perPixelTargetFind: false, + /** + * Number of pixels around target pixel to tolerate (consider active) during object detection + * @type Number + * @default + */ + targetFindTolerance: 0, + /** + * When true, target detection is skipped. Target detection will return always undefined. + * click selection won't work anymore, events will fire with no targets. + * if something is selected before setting it to true, it will be deselected at the first click. + * area selection will still work. check the `selection` property too. + * if you deactivate both, you should look into staticCanvas. + * @type Boolean + * @default + */ + skipTargetFind: false, + /** + * When true, mouse events on canvas (mousedown/mousemove/mouseup) result in free drawing. + * After mousedown, mousemove creates a shape, + * and then mouseup finalizes it and adds an instance of `fabric.Path` onto canvas. + * @tutorial {@link http://fabricjs.com/fabric-intro-part-4#free_drawing} + * @type Boolean + * @default + */ + isDrawingMode: false, + /** + * Indicates whether objects should remain in current stack position when selected. + * When false objects are brought to top and rendered as part of the selection group + * @type Boolean + * @default + */ + preserveObjectStacking: false, + /** + * Indicates the angle that an object will lock to while rotating. + * @type Number + * @since 1.6.7 + * @default + */ + snapAngle: 0, + /** + * Indicates the distance from the snapAngle the rotation will lock to the snapAngle. + * When `null`, the snapThreshold will default to the snapAngle. + * @type null|Number + * @since 1.6.7 + * @default + */ + snapThreshold: null, + /** + * Indicates if the right click on canvas can output the context menu or not + * @type Boolean + * @since 1.6.5 + * @default + */ + stopContextMenu: false, + /** + * Indicates if the canvas can fire right click events + * @type Boolean + * @since 1.6.5 + * @default + */ + fireRightClick: false, + /** + * Indicates if the canvas can fire middle click events + * @type Boolean + * @since 1.7.8 + * @default + */ + fireMiddleClick: false, + /** + * Keep track of the subTargets for Mouse Events + * @type fabric.Object[] + */ + targets: [], + /** + * When the option is enabled, PointerEvent is used instead of MouseEvent. + * @type Boolean + * @default + */ + enablePointerEvents: false, + /** + * Keep track of the hovered target + * @type fabric.Object + * @private + */ + _hoveredTarget: null, + /** + * hold the list of nested targets hovered + * @type fabric.Object[] + * @private + */ + _hoveredTargets: [], + /** + * hold the list of objects to render + * @type fabric.Object[] + * @private + */ + _objectsToRender: undefined, + /** + * @private + */ + _initInteractive: function () { + this._currentTransform = null; + this._groupSelector = null; + this._initWrapperElement(); + this._createUpperCanvas(); + this._initEventListeners(); + this._initRetinaScaling(); + this.freeDrawingBrush = + fabric.PencilBrush && new fabric.PencilBrush(this); + this.calcOffset(); + }, + /** + * @private + * @param {fabric.Object} obj Object that was added + */ + _onObjectAdded: function (obj) { + this._objectsToRender = undefined; + this.callSuper('_onObjectAdded', obj); + }, + /** + * @private + * @param {fabric.Object} obj Object that was removed + */ + _onObjectRemoved: function (obj) { + this._objectsToRender = undefined; + // removing active object should fire "selection:cleared" events + if (obj === this._activeObject) { + this.fire('before:selection:cleared', { target: obj }); + this._discardActiveObject(); + this.fire('selection:cleared', { target: obj }); + obj.fire('deselected'); + } + if (obj === this._hoveredTarget) { + this._hoveredTarget = null; + this._hoveredTargets = []; + } + this.callSuper('_onObjectRemoved', obj); + }, + /** + * Divides objects in two groups, one to render immediately + * and one to render as activeGroup. + * @return {Array} objects to render immediately and pushes the other in the activeGroup. + */ + _chooseObjectsToRender: function () { + var activeObjects = this.getActiveObjects(), object, objsToRender, activeGroupObjects; + if (!this.preserveObjectStacking && activeObjects.length > 1) { + objsToRender = []; + activeGroupObjects = []; + for (var i = 0, length = this._objects.length; i < length; i++) { + object = this._objects[i]; + if (activeObjects.indexOf(object) === -1) { + objsToRender.push(object); + } + else { + activeGroupObjects.push(object); + } + } + if (activeObjects.length > 1) { + this._activeObject._objects = activeGroupObjects; + } + objsToRender.push.apply(objsToRender, activeGroupObjects); + } + // in case a single object is selected render it's entire parent above the other objects + else if (!this.preserveObjectStacking && activeObjects.length === 1) { + var target = activeObjects[0], ancestors = target.getAncestors(true); + var topAncestor = ancestors.length === 0 ? target : ancestors.pop(); + objsToRender = this._objects.slice(); + var index = objsToRender.indexOf(topAncestor); + index > -1 && + objsToRender.splice(objsToRender.indexOf(topAncestor), 1); + objsToRender.push(topAncestor); + } + else { + objsToRender = this._objects; + } + return objsToRender; + }, + /** + * Renders both the top canvas and the secondary container canvas. + * @return {fabric.Canvas} instance + * @chainable + */ + renderAll: function () { + this.cancelRequestedRender(); + if (this.destroyed) { + return; + } + if (this.contextTopDirty && + !this._groupSelector && + !this.isDrawingMode) { + this.clearContext(this.contextTop); + this.contextTopDirty = false; + } + if (this.hasLostContext) { + this.renderTopLayer(this.contextTop); + this.hasLostContext = false; + } + !this._objectsToRender && + (this._objectsToRender = this._chooseObjectsToRender()); + this.renderCanvas(this.contextContainer, this._objectsToRender); + return this; + }, + renderTopLayer: function (ctx) { + ctx.save(); + if (this.isDrawingMode && this._isCurrentlyDrawing) { + this.freeDrawingBrush && this.freeDrawingBrush._render(); + this.contextTopDirty = true; + } + // we render the top context - last object + if (this.selection && this._groupSelector) { + this._drawSelection(ctx); + this.contextTopDirty = true; + } + ctx.restore(); + }, + /** + * Method to render only the top canvas. + * Also used to render the group selection box. + * @return {fabric.Canvas} thisArg + * @chainable + */ + renderTop: function () { + var ctx = this.contextTop; + this.clearContext(ctx); + this.renderTopLayer(ctx); + this.fire('after:render'); + return this; + }, + /** + * @private + */ + _normalizePointer: function (object, pointer) { + var m = object.calcTransformMatrix(), invertedM = fabric.util.invertTransform(m), vptPointer = this.restorePointerVpt(pointer); + return fabric.util.transformPoint(vptPointer, invertedM); + }, + /** + * Returns true if object is transparent at a certain location + * @param {fabric.Object} target Object to check + * @param {Number} x Left coordinate + * @param {Number} y Top coordinate + * @return {Boolean} + */ + isTargetTransparent: function (target, x, y) { + // in case the target is the activeObject, we cannot execute this optimization + // because we need to draw controls too. + if (target.shouldCache() && + target._cacheCanvas && + target !== this._activeObject) { + var normalizedPointer = this._normalizePointer(target, { + x: x, + y: y, + }), targetRelativeX = Math.max(target.cacheTranslationX + normalizedPointer.x * target.zoomX, 0), targetRelativeY = Math.max(target.cacheTranslationY + normalizedPointer.y * target.zoomY, 0); + var isTransparent = fabric.util.isTransparent(target._cacheContext, Math.round(targetRelativeX), Math.round(targetRelativeY), this.targetFindTolerance); + return isTransparent; + } + var ctx = this.contextCache, originalColor = target.selectionBackgroundColor, v = this.viewportTransform; + target.selectionBackgroundColor = ''; + this.clearContext(ctx); + ctx.save(); + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + target.render(ctx); + ctx.restore(); + target.selectionBackgroundColor = originalColor; + var isTransparent = fabric.util.isTransparent(ctx, x, y, this.targetFindTolerance); + return isTransparent; + }, + /** + * takes an event and determines if selection key has been pressed + * @private + * @param {Event} e Event object + */ + _isSelectionKeyPressed: function (e) { + var selectionKeyPressed = false; + if (Array.isArray(this.selectionKey)) { + selectionKeyPressed = !!this.selectionKey.find(function (key) { + return e[key] === true; + }); + } + else { + selectionKeyPressed = e[this.selectionKey]; + } + return selectionKeyPressed; + }, + /** + * @private + * @param {Event} e Event object + * @param {fabric.Object} target + */ + _shouldClearSelection: function (e, target) { + var activeObjects = this.getActiveObjects(), activeObject = this._activeObject; + return (!target || + (target && + activeObject && + activeObjects.length > 1 && + activeObjects.indexOf(target) === -1 && + activeObject !== target && + !this._isSelectionKeyPressed(e)) || + (target && !target.evented) || + (target && + !target.selectable && + activeObject && + activeObject !== target)); + }, + /** + * centeredScaling from object can't override centeredScaling from canvas. + * this should be fixed, since object setting should take precedence over canvas. + * also this should be something that will be migrated in the control properties. + * as ability to define the origin of the transformation that the control provide. + * @private + * @param {fabric.Object} target + * @param {String} action + * @param {Boolean} altKey + */ + _shouldCenterTransform: function (target, action, altKey) { + if (!target) { + return; + } + var centerTransform; + if (action === 'scale' || + action === 'scaleX' || + action === 'scaleY' || + action === 'resizing') { + centerTransform = this.centeredScaling || target.centeredScaling; + } + else if (action === 'rotate') { + centerTransform = this.centeredRotation || target.centeredRotation; + } + return centerTransform ? !altKey : altKey; + }, + /** + * should disappear before release 4.0 + * @private + */ + _getOriginFromCorner: function (target, corner) { + var origin = { + x: target.originX, + y: target.originY, + }; + if (corner === 'ml' || corner === 'tl' || corner === 'bl') { + origin.x = 'right'; + } + else if (corner === 'mr' || corner === 'tr' || corner === 'br') { + origin.x = 'left'; + } + if (corner === 'tl' || corner === 'mt' || corner === 'tr') { + origin.y = 'bottom'; + } + else if (corner === 'bl' || corner === 'mb' || corner === 'br') { + origin.y = 'top'; + } + return origin; + }, + /** + * @private + * @param {Boolean} alreadySelected true if target is already selected + * @param {String} corner a string representing the corner ml, mr, tl ... + * @param {Event} e Event object + * @param {fabric.Object} [target] inserted back to help overriding. Unused + */ + _getActionFromCorner: function (alreadySelected, corner, e, target) { + if (!corner || !alreadySelected) { + return 'drag'; + } + var control = target.controls[corner]; + return control.getActionName(e, control, target); + }, + /** + * @private + * @param {Event} e Event object + * @param {fabric.Object} target + */ + _setupCurrentTransform: function (e, target, alreadySelected) { + if (!target) { + return; + } + var pointer = this.getPointer(e); + if (target.group) { + // transform pointer to target's containing coordinate plane + pointer = fabric.util.transformPoint(pointer, fabric.util.invertTransform(target.group.calcTransformMatrix())); + } + var corner = target.__corner, control = target.controls[corner], actionHandler = alreadySelected && corner + ? control.getActionHandler(e, target, control) + : fabric.controlsUtils.dragHandler, action = this._getActionFromCorner(alreadySelected, corner, e, target), origin = this._getOriginFromCorner(target, corner), altKey = e[this.centeredKey], + /** + * relative to target's containing coordinate plane + * both agree on every point + **/ + transform = { + target: target, + action: action, + actionHandler: actionHandler, + corner: corner, + scaleX: target.scaleX, + scaleY: target.scaleY, + skewX: target.skewX, + skewY: target.skewY, + offsetX: pointer.x - target.left, + offsetY: pointer.y - target.top, + originX: origin.x, + originY: origin.y, + ex: pointer.x, + ey: pointer.y, + lastX: pointer.x, + lastY: pointer.y, + theta: degreesToRadians(target.angle), + width: target.width * target.scaleX, + shiftKey: e.shiftKey, + altKey: altKey, + original: fabric.util.saveObjectTransform(target), + }; + if (this._shouldCenterTransform(target, action, altKey)) { + transform.originX = 'center'; + transform.originY = 'center'; + } + transform.original.originX = origin.x; + transform.original.originY = origin.y; + this._currentTransform = transform; + this._beforeTransform(e); + }, + /** + * Set the cursor type of the canvas element + * @param {String} value Cursor type of the canvas element. + * @see http://www.w3.org/TR/css3-ui/#cursor + */ + setCursor: function (value) { + this.upperCanvasEl.style.cursor = value; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx to draw the selection on + */ + _drawSelection: function (ctx) { + var selector = this._groupSelector, viewportStart = new Point(selector.ex, selector.ey), start = fabric.util.transformPoint(viewportStart, this.viewportTransform), viewportExtent = new Point(selector.ex + selector.left, selector.ey + selector.top), extent = fabric.util.transformPoint(viewportExtent, this.viewportTransform), minX = Math.min(start.x, extent.x), minY = Math.min(start.y, extent.y), maxX = Math.max(start.x, extent.x), maxY = Math.max(start.y, extent.y), strokeOffset = this.selectionLineWidth / 2; + if (this.selectionColor) { + ctx.fillStyle = this.selectionColor; + ctx.fillRect(minX, minY, maxX - minX, maxY - minY); + } + if (!this.selectionLineWidth || !this.selectionBorderColor) { + return; + } + ctx.lineWidth = this.selectionLineWidth; + ctx.strokeStyle = this.selectionBorderColor; + minX += strokeOffset; + minY += strokeOffset; + maxX -= strokeOffset; + maxY -= strokeOffset; + // selection border + fabric.Object.prototype._setLineDash.call(this, ctx, this.selectionDashArray); + ctx.strokeRect(minX, minY, maxX - minX, maxY - minY); + }, + /** + * Method that determines what object we are clicking on + * the skipGroup parameter is for internal use, is needed for shift+click action + * 11/09/2018 TODO: would be cool if findTarget could discern between being a full target + * or the outside part of the corner. + * @param {Event} e mouse event + * @param {Boolean} skipGroup when true, activeGroup is skipped and only objects are traversed through + * @return {fabric.Object} the target found + */ + findTarget: function (e, skipGroup) { + if (this.skipTargetFind) { + return; + } + var ignoreZoom = true, pointer = this.getPointer(e, ignoreZoom), activeObject = this._activeObject, aObjects = this.getActiveObjects(), activeTarget, activeTargetSubs, isTouch = isTouchEvent(e), shouldLookForActive = (aObjects.length > 1 && !skipGroup) || aObjects.length === 1; + // first check current group (if one exists) + // active group does not check sub targets like normal groups. + // if active group just exits. + this.targets = []; + // if we hit the corner of an activeObject, let's return that. + if (shouldLookForActive && + activeObject._findTargetCorner(pointer, isTouch)) { + return activeObject; + } + if (aObjects.length > 1 && + activeObject.type === 'activeSelection' && + !skipGroup && + this.searchPossibleTargets([activeObject], pointer)) { + return activeObject; + } + if (aObjects.length === 1 && + activeObject === this.searchPossibleTargets([activeObject], pointer)) { + if (!this.preserveObjectStacking) { + return activeObject; + } + else { + activeTarget = activeObject; + activeTargetSubs = this.targets; + this.targets = []; + } + } + var target = this.searchPossibleTargets(this._objects, pointer); + if (e[this.altSelectionKey] && + target && + activeTarget && + target !== activeTarget) { + target = activeTarget; + this.targets = activeTargetSubs; + } + return target; + }, + /** + * Checks point is inside the object. + * @param {Object} [pointer] x,y object of point coordinates we want to check. + * @param {fabric.Object} obj Object to test against + * @param {Object} [globalPointer] x,y object of point coordinates relative to canvas used to search per pixel target. + * @return {Boolean} true if point is contained within an area of given object + * @private + */ + _checkTarget: function (pointer, obj, globalPointer) { + if (obj && + obj.visible && + obj.evented && + // http://www.geog.ubc.ca/courses/klink/gis.notes/ncgia/u32.html + // http://idav.ucdavis.edu/~okreylos/TAship/Spring2000/PointInPolygon.html + obj.containsPoint(pointer)) { + if ((this.perPixelTargetFind || obj.perPixelTargetFind) && + !obj.isEditing) { + var isTransparent = this.isTargetTransparent(obj, globalPointer.x, globalPointer.y); + if (!isTransparent) { + return true; + } + } + else { + return true; + } + } + }, + /** + * Internal Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted + * @param {Array} [objects] objects array to look into + * @param {Object} [pointer] x,y object of point coordinates we want to check. + * @return {fabric.Object} **top most object from given `objects`** that contains pointer + * @private + */ + _searchPossibleTargets: function (objects, pointer) { + // Cache all targets where their bounding box contains point. + var target, i = objects.length, subTarget; + // Do not check for currently grouped objects, since we check the parent group itself. + // until we call this function specifically to search inside the activeGroup + while (i--) { + var objToCheck = objects[i]; + var pointerToUse = objToCheck.group + ? this._normalizePointer(objToCheck.group, pointer) + : pointer; + if (this._checkTarget(pointerToUse, objToCheck, pointer)) { + target = objects[i]; + if (target.subTargetCheck && Array.isArray(target._objects)) { + subTarget = this._searchPossibleTargets(target._objects, pointer); + subTarget && this.targets.push(subTarget); + } + break; + } + } + return target; + }, + /** + * Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted + * @see {@link fabric.Canvas#_searchPossibleTargets} + * @param {Array} [objects] objects array to look into + * @param {Object} [pointer] x,y object of point coordinates we want to check. + * @return {fabric.Object} **top most object on screen** that contains pointer + */ + searchPossibleTargets: function (objects, pointer) { + var target = this._searchPossibleTargets(objects, pointer); + return target && target.interactive && this.targets[0] + ? this.targets[0] + : target; + }, + /** + * Returns pointer coordinates without the effect of the viewport + * @param {Object} pointer with "x" and "y" number values + * @return {Object} object with "x" and "y" number values + */ + restorePointerVpt: function (pointer) { + return fabric.util.transformPoint(pointer, fabric.util.invertTransform(this.viewportTransform)); + }, + /** + * Returns pointer coordinates relative to canvas. + * Can return coordinates with or without viewportTransform. + * ignoreVpt false gives back coordinates that represent + * the point clicked on canvas element. + * ignoreVpt true gives back coordinates after being processed + * by the viewportTransform ( sort of coordinates of what is displayed + * on the canvas where you are clicking. + * ignoreVpt true = HTMLElement coordinates relative to top,left + * ignoreVpt false, default = fabric space coordinates, the same used for shape position + * To interact with your shapes top and left you want to use ignoreVpt true + * most of the time, while ignoreVpt false will give you coordinates + * compatible with the object.oCoords system. + * of the time. + * @param {Event} e + * @param {Boolean} ignoreVpt + * @return {Point} + */ + getPointer: function (e, ignoreVpt) { + // return cached values if we are in the event processing chain + if (this._absolutePointer && !ignoreVpt) { + return this._absolutePointer; + } + if (this._pointer && ignoreVpt) { + return this._pointer; + } + var pointer = getPointer(e), upperCanvasEl = this.upperCanvasEl, bounds = upperCanvasEl.getBoundingClientRect(), boundsWidth = bounds.width || 0, boundsHeight = bounds.height || 0, cssScale; + if (!boundsWidth || !boundsHeight) { + if ('top' in bounds && 'bottom' in bounds) { + boundsHeight = Math.abs(bounds.top - bounds.bottom); + } + if ('right' in bounds && 'left' in bounds) { + boundsWidth = Math.abs(bounds.right - bounds.left); + } + } + this.calcOffset(); + pointer.x = pointer.x - this._offset.left; + pointer.y = pointer.y - this._offset.top; + if (!ignoreVpt) { + pointer = this.restorePointerVpt(pointer); + } + var retinaScaling = this.getRetinaScaling(); + if (retinaScaling !== 1) { + pointer.x /= retinaScaling; + pointer.y /= retinaScaling; + } + // If bounds are not available (i.e. not visible), do not apply scale. + cssScale = + boundsWidth === 0 || boundsHeight === 0 + ? new Point(1, 1) + : new Point(upperCanvasEl.width / boundsWidth, upperCanvasEl.height / boundsHeight); + return new Point(pointer.x * cssScale.x, pointer.y * cssScale.y); + }, + /** + * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em) + * @param {Object} dimensions Object with width/height properties + * @param {Number|String} [dimensions.width] Width of canvas element + * @param {Number|String} [dimensions.height] Height of canvas element + * @param {Object} [options] Options object + * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions + * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions + * @return {fabric.Canvas} thisArg + * @chainable + */ + setDimensions: function (dimensions, options) { + this._resetTransformEventData(); + return this.callSuper('setDimensions', dimensions, options); + }, + /** + * @private + * @throws {CANVAS_INIT_ERROR} If canvas can not be initialized + */ + _createUpperCanvas: function () { + var lowerCanvasEl = this.lowerCanvasEl, upperCanvasEl = this.upperCanvasEl; + // if there is no upperCanvas (most common case) we create one. + if (!upperCanvasEl) { + upperCanvasEl = this._createCanvasElement(); + this.upperCanvasEl = upperCanvasEl; + } + // we assign the same classname of the lowerCanvas + upperCanvasEl.className = lowerCanvasEl.className; + // but then we remove the lower-canvas specific className + upperCanvasEl.classList.remove('lower-canvas'); + // we add the specific upper-canvas class + upperCanvasEl.classList.add('upper-canvas'); + upperCanvasEl.setAttribute('data-fabric', 'top'); + this.wrapperEl.appendChild(upperCanvasEl); + this._copyCanvasStyle(lowerCanvasEl, upperCanvasEl); + this._applyCanvasStyle(upperCanvasEl); + upperCanvasEl.setAttribute('draggable', 'true'); + this.contextTop = upperCanvasEl.getContext('2d'); + }, + /** + * @private + */ + _createCacheCanvas: function () { + this.cacheCanvasEl = this._createCanvasElement(); + this.cacheCanvasEl.setAttribute('width', this.width); + this.cacheCanvasEl.setAttribute('height', this.height); + this.contextCache = this.cacheCanvasEl.getContext('2d'); + }, + /** + * @private + */ + _initWrapperElement: function () { + if (this.wrapperEl) { + return; + } + const container = fabric.document.createElement('div'); + container.classList.add(this.containerClass); + this.wrapperEl = fabric.util.wrapElement(this.lowerCanvasEl, container); + this.wrapperEl.setAttribute('data-fabric', 'wrapper'); + fabric.util.setStyle(this.wrapperEl, { + width: this.width + 'px', + height: this.height + 'px', + position: 'relative', + }); + fabric.util.makeElementUnselectable(this.wrapperEl); + }, + /** + * @private + * @param {HTMLElement} element canvas element to apply styles on + */ + _applyCanvasStyle: function (element) { + var width = this.width || element.width, height = this.height || element.height; + fabric.util.setStyle(element, { + position: 'absolute', + width: width + 'px', + height: height + 'px', + left: 0, + top: 0, + 'touch-action': this.allowTouchScrolling ? 'manipulation' : 'none', + '-ms-touch-action': this.allowTouchScrolling + ? 'manipulation' + : 'none', + }); + element.width = width; + element.height = height; + fabric.util.makeElementUnselectable(element); + }, + /** + * Copy the entire inline style from one element (fromEl) to another (toEl) + * @private + * @param {Element} fromEl Element style is copied from + * @param {Element} toEl Element copied style is applied to + */ + _copyCanvasStyle: function (fromEl, toEl) { + toEl.style.cssText = fromEl.style.cssText; + }, + /** + * Returns context of top canvas where interactions are drawn + * @returns {CanvasRenderingContext2D} + */ + getTopContext: function () { + return this.contextTop; + }, + /** + * Returns context of canvas where object selection is drawn + * @alias + * @return {CanvasRenderingContext2D} + */ + getSelectionContext: function () { + return this.contextTop; + }, + /** + * Returns <canvas> element on which object selection is drawn + * @return {HTMLCanvasElement} + */ + getSelectionElement: function () { + return this.upperCanvasEl; + }, + /** + * Returns currently active object + * @return {fabric.Object} active object + */ + getActiveObject: function () { + return this._activeObject; + }, + /** + * Returns an array with the current selected objects + * @return {fabric.Object} active object + */ + getActiveObjects: function () { + var active = this._activeObject; + if (active) { + if (active.type === 'activeSelection' && active._objects) { + return active._objects.slice(0); + } + else { + return [active]; + } + } + return []; + }, + /** + * @private + * Compares the old activeObject with the current one and fires correct events + * @param {fabric.Object} obj old activeObject + */ + _fireSelectionEvents: function (oldObjects, e) { + var somethingChanged = false, objects = this.getActiveObjects(), added = [], removed = [], invalidate = false; + oldObjects.forEach(function (oldObject) { + if (objects.indexOf(oldObject) === -1) { + somethingChanged = true; + oldObject.fire('deselected', { + e: e, + target: oldObject, + }); + removed.push(oldObject); + } + }); + objects.forEach(function (object) { + if (oldObjects.indexOf(object) === -1) { + somethingChanged = true; + object.fire('selected', { + e: e, + target: object, + }); + added.push(object); + } + }); + if (oldObjects.length > 0 && objects.length > 0) { + invalidate = true; + somethingChanged && + this.fire('selection:updated', { + e: e, + selected: added, + deselected: removed, + }); + } + else if (objects.length > 0) { + invalidate = true; + this.fire('selection:created', { + e: e, + selected: added, + }); + } + else if (oldObjects.length > 0) { + invalidate = true; + this.fire('selection:cleared', { + e: e, + deselected: removed, + }); + } + invalidate && (this._objectsToRender = undefined); + }, + /** + * Sets given object as the only active object on canvas + * @param {fabric.Object} object Object to set as an active one + * @param {Event} [e] Event (passed along when firing "object:selected") + * @return {fabric.Canvas} thisArg + * @chainable + */ + setActiveObject: function (object, e) { + var currentActives = this.getActiveObjects(); + this._setActiveObject(object, e); + this._fireSelectionEvents(currentActives, e); + return this; + }, + /** + * This is a private method for now. + * This is supposed to be equivalent to setActiveObject but without firing + * any event. There is commitment to have this stay this way. + * This is the functional part of setActiveObject. + * @private + * @param {Object} object to set as active + * @param {Event} [e] Event (passed along when firing "object:selected") + * @return {Boolean} true if the selection happened + */ + _setActiveObject: function (object, e) { + if (this._activeObject === object) { + return false; + } + if (!this._discardActiveObject(e, object)) { + return false; + } + if (object.onSelect({ e: e })) { + return false; + } + this._activeObject = object; + return true; + }, + /** + * This is a private method for now. + * This is supposed to be equivalent to discardActiveObject but without firing + * any selection events ( can still fire object transformation events ). There is commitment to have this stay this way. + * This is the functional part of discardActiveObject. + * @param {Event} [e] Event (passed along when firing "object:deselected") + * @param {Object} object to set as active + * @return {Boolean} true if the selection happened + * @private + */ + _discardActiveObject: function (e, object) { + var obj = this._activeObject; + if (obj) { + // onDeselect return TRUE to cancel selection; + if (obj.onDeselect({ e: e, object: object })) { + return false; + } + if (this._currentTransform && this._currentTransform.target === obj) { + this.endCurrentTransform(e); + } + this._activeObject = null; + } + return true; + }, + /** + * Discards currently active object and fire events. If the function is called by fabric + * as a consequence of a mouse event, the event is passed as a parameter and + * sent to the fire function for the custom events. When used as a method the + * e param does not have any application. + * @param {event} e + * @return {fabric.Canvas} thisArg + * @chainable + */ + discardActiveObject: function (e) { + var currentActives = this.getActiveObjects(), activeObject = this.getActiveObject(); + if (currentActives.length) { + this.fire('before:selection:cleared', { target: activeObject, e: e }); + } + this._discardActiveObject(e); + this._fireSelectionEvents(currentActives, e); + return this; + }, + /** + * Clears the canvas element, disposes objects, removes all event listeners and frees resources + * + * **CAUTION**: + * + * This method is **UNSAFE**. + * You may encounter a race condition using it if there's a requested render. + * Call this method only if you are sure rendering has settled. + * Consider using {@link dispose} as it is **SAFE** + * + * @private + */ + destroy: function () { + var wrapperEl = this.wrapperEl, lowerCanvasEl = this.lowerCanvasEl, upperCanvasEl = this.upperCanvasEl, cacheCanvasEl = this.cacheCanvasEl; + this.removeListeners(); + this.callSuper('destroy'); + wrapperEl.removeChild(upperCanvasEl); + wrapperEl.removeChild(lowerCanvasEl); + this.contextCache = null; + this.contextTop = null; + fabric.util.cleanUpJsdomNode(upperCanvasEl); + this.upperCanvasEl = undefined; + fabric.util.cleanUpJsdomNode(cacheCanvasEl); + this.cacheCanvasEl = undefined; + if (wrapperEl.parentNode) { + wrapperEl.parentNode.replaceChild(lowerCanvasEl, wrapperEl); + } + delete this.wrapperEl; + return this; + }, + /** + * Clears all contexts (background, main, top) of an instance + * @return {fabric.Canvas} thisArg + * @chainable + */ + clear: function () { + // this.discardActiveGroup(); + this.discardActiveObject(); + this.clearContext(this.contextTop); + return this.callSuper('clear'); + }, + /** + * Draws objects' controls (borders/controls) + * @param {CanvasRenderingContext2D} ctx Context to render controls on + */ + drawControls: function (ctx) { + var activeObject = this._activeObject; + if (activeObject) { + activeObject._renderControls(ctx); + } + }, + /** + * @private + */ + _toObject: function (instance, methodName, propertiesToInclude) { + //If the object is part of the current selection group, it should + //be transformed appropriately + //i.e. it should be serialised as it would appear if the selection group + //were to be destroyed. + var originalProperties = this._realizeGroupTransformOnObject(instance), object = this.callSuper('_toObject', instance, methodName, propertiesToInclude); + //Undo the damage we did by changing all of its properties + originalProperties && instance.set(originalProperties); + return object; + }, + /** + * Realises an object's group transformation on it + * @private + * @param {fabric.Object} [instance] the object to transform (gets mutated) + * @returns the original values of instance which were changed + */ + _realizeGroupTransformOnObject: function (instance) { + if (instance.group && + instance.group.type === 'activeSelection' && + this._activeObject === instance.group) { + var layoutProps = [ + 'angle', + 'flipX', + 'flipY', + 'left', + 'scaleX', + 'scaleY', + 'skewX', + 'skewY', + 'top', + ]; + //Copy all the positionally relevant properties across now + var originalValues = {}; + layoutProps.forEach(function (prop) { + originalValues[prop] = instance[prop]; + }); + fabric.util.addTransformToObject(instance, this._activeObject.calcOwnMatrix()); + return originalValues; + } + else { + return null; + } + }, + /** + * @private + */ + _setSVGObject: function (markup, instance, reviver) { + //If the object is in a selection group, simulate what would happen to that + //object when the group is deselected + var originalProperties = this._realizeGroupTransformOnObject(instance); + this.callSuper('_setSVGObject', markup, instance, reviver); + originalProperties && instance.set(originalProperties); + }, + setViewportTransform: function (vpt) { + if (this.renderOnAddRemove && + this._activeObject && + this._activeObject.isEditing) { + this._activeObject.clearContextTop(); + } + fabric.StaticCanvas.prototype.setViewportTransform.call(this, vpt); + }, + }); + // copying static properties manually to work around Opera's bug, + // where "prototype" property is enumerable and overrides existing prototype + for (var prop in fabric.StaticCanvas) { + if (prop !== 'prototype') { + fabric.Canvas[prop] = fabric.StaticCanvas[prop]; + } } +})(typeof exports !== 'undefined' ? exports : window); - return [ - Math.round(r * 255), - Math.round(g * 255), - Math.round(b * 255), - match[4] ? parseFloat(match[4]) : 1 - ]; - }; - - /** - * Returns new color object, when given a color in HSLA format - * @static - * @function - * @memberOf fabric.Color - * @param {String} color - * @return {fabric.Color} - */ - fabric.Color.fromHsla = Color.fromHsl; - - /** - * Returns new color object, when given a color in HEX format - * @static - * @memberOf fabric.Color - * @param {String} color Color value ex: FF5555 - * @return {fabric.Color} - */ - fabric.Color.fromHex = function(color) { - return Color.fromSource(Color.sourceFromHex(color)); - }; - - /** - * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HEX format - * @static - * @memberOf fabric.Color - * @param {String} color ex: FF5555 or FF5544CC (RGBa) - * @return {Array} source - */ - fabric.Color.sourceFromHex = function(color) { - if (color.match(Color.reHex)) { - var value = color.slice(color.indexOf('#') + 1), - isShortNotation = (value.length === 3 || value.length === 4), - isRGBa = (value.length === 8 || value.length === 4), - r = isShortNotation ? (value.charAt(0) + value.charAt(0)) : value.substring(0, 2), - g = isShortNotation ? (value.charAt(1) + value.charAt(1)) : value.substring(2, 4), - b = isShortNotation ? (value.charAt(2) + value.charAt(2)) : value.substring(4, 6), - a = isRGBa ? (isShortNotation ? (value.charAt(3) + value.charAt(3)) : value.substring(6, 8)) : 'FF'; - - return [ - parseInt(r, 16), - parseInt(g, 16), - parseInt(b, 16), - parseFloat((parseInt(a, 16) / 255).toFixed(2)) - ]; - } - }; - - /** - * Returns new color object, when given color in array representation (ex: [200, 100, 100, 0.5]) - * @static - * @memberOf fabric.Color - * @param {Array} source - * @return {fabric.Color} - */ - fabric.Color.fromSource = function(source) { - var oColor = new Color(); - oColor.setSource(source); - return oColor; - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - scaleMap = ['e', 'se', 's', 'sw', 'w', 'nw', 'n', 'ne', 'e'], - skewMap = ['ns', 'nesw', 'ew', 'nwse'], - controls = {}, - LEFT = 'left', TOP = 'top', RIGHT = 'right', BOTTOM = 'bottom', CENTER = 'center', - opposite = { - top: BOTTOM, - bottom: TOP, - left: RIGHT, - right: LEFT, - center: CENTER, - }, radiansToDegrees = fabric.util.radiansToDegrees, - sign = (Math.sign || function(x) { return ((x > 0) - (x < 0)) || +x; }); - - /** - * Combine control position and object angle to find the control direction compared - * to the object center. - * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls - * @param {fabric.Control} control the control class - * @return {Number} 0 - 7 a quadrant number - */ - function findCornerQuadrant(fabricObject, control) { - var cornerAngle = fabricObject.angle + radiansToDegrees(Math.atan2(control.y, control.x)) + 360; - return Math.round((cornerAngle % 360) / 45); - } - - function fireEvent(eventName, options) { - var target = options.transform.target, - canvas = target.canvas, - canvasOptions = fabric.util.object.clone(options); - canvasOptions.target = target; - canvas && canvas.fire('object:' + eventName, canvasOptions); +const fireEvent = (eventName, options) => { + var _a; + const target = options.transform.target; + (_a = target.canvas) === null || _a === void 0 ? void 0 : _a.fire('object:' + eventName, Object.assign(Object.assign({}, options), { target })); target.fire(eventName, options); - } - - /** - * Inspect event and fabricObject properties to understand if the scaling action - * @param {Event} eventData from the user action - * @param {fabric.Object} fabricObject the fabric object about to scale - * @return {Boolean} true if scale is proportional - */ - function scaleIsProportional(eventData, fabricObject) { - var canvas = fabricObject.canvas, uniScaleKey = canvas.uniScaleKey, - uniformIsToggled = eventData[uniScaleKey]; - return (canvas.uniformScaling && !uniformIsToggled) || - (!canvas.uniformScaling && uniformIsToggled); - } - - /** - * Checks if transform is centered - * @param {Object} transform transform data - * @return {Boolean} true if transform is centered - */ - function isTransformCentered(transform) { - return transform.originX === CENTER && transform.originY === CENTER; - } - - /** - * Inspect fabricObject to understand if the current scaling action is allowed - * @param {fabric.Object} fabricObject the fabric object about to scale - * @param {String} by 'x' or 'y' or '' - * @param {Boolean} scaleProportionally true if we are trying to scale proportionally - * @return {Boolean} true if scaling is not allowed at current conditions - */ - function scalingIsForbidden(fabricObject, by, scaleProportionally) { - var lockX = fabricObject.lockScalingX, lockY = fabricObject.lockScalingY; - if (lockX && lockY) { - return true; - } - if (!by && (lockX || lockY) && scaleProportionally) { - return true; - } - if (lockX && by === 'x') { - return true; - } - if (lockY && by === 'y') { - return true; - } - return false; - } - - /** - * return the correct cursor style for the scale action - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} a valid css string for the cursor - */ - function scaleCursorStyleHandler(eventData, control, fabricObject) { - var notAllowed = 'not-allowed', - scaleProportionally = scaleIsProportional(eventData, fabricObject), - by = ''; - if (control.x !== 0 && control.y === 0) { - by = 'x'; - } - else if (control.x === 0 && control.y !== 0) { - by = 'y'; - } - if (scalingIsForbidden(fabricObject, by, scaleProportionally)) { - return notAllowed; - } - var n = findCornerQuadrant(fabricObject, control); - return scaleMap[n] + '-resize'; - } - - /** - * return the correct cursor style for the skew action - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} a valid css string for the cursor - */ - function skewCursorStyleHandler(eventData, control, fabricObject) { - var notAllowed = 'not-allowed'; - if (control.x !== 0 && fabricObject.lockSkewingY) { - return notAllowed; - } - if (control.y !== 0 && fabricObject.lockSkewingX) { - return notAllowed; - } - var n = findCornerQuadrant(fabricObject, control) % 4; - return skewMap[n] + '-resize'; - } - - /** - * Combine skew and scale style handlers to cover fabric standard use case - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} a valid css string for the cursor - */ - function scaleSkewCursorStyleHandler(eventData, control, fabricObject) { - if (eventData[fabricObject.canvas.altActionKey]) { - return controls.skewCursorStyleHandler(eventData, control, fabricObject); - } - return controls.scaleCursorStyleHandler(eventData, control, fabricObject); - } - - /** - * Inspect event, control and fabricObject to return the correct action name - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} an action name - */ - function scaleOrSkewActionName(eventData, control, fabricObject) { - var isAlternative = eventData[fabricObject.canvas.altActionKey]; - if (control.x === 0) { - // then is scaleY or skewX - return isAlternative ? 'skewX' : 'scaleY'; - } - if (control.y === 0) { - // then is scaleY or skewX - return isAlternative ? 'skewY' : 'scaleX'; - } - } - - /** - * Find the correct style for the control that is used for rotation. - * this function is very simple and it just take care of not-allowed or standard cursor - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} a valid css string for the cursor - */ - function rotationStyleHandler(eventData, control, fabricObject) { - if (fabricObject.lockRotation) { - return 'not-allowed'; - } - return control.cursorStyle; - } - - function commonEventInfo(eventData, transform, x, y) { - return { - e: eventData, - transform: transform, - pointer: { - x: x, - y: y, - } - }; - } - - /** - * Wrap an action handler with saving/restoring object position on the transform. - * this is the code that permits to objects to keep their position while transforming. - * @param {Function} actionHandler the function to wrap - * @return {Function} a function with an action handler signature - */ - function wrapWithFixedAnchor(actionHandler) { - return function(eventData, transform, x, y) { - var target = transform.target, centerPoint = target.getCenterPoint(), - constraint = target.translateToOriginPoint(centerPoint, transform.originX, transform.originY), - actionPerformed = actionHandler(eventData, transform, x, y); - target.setPositionByOrigin(constraint, transform.originX, transform.originY); - return actionPerformed; - }; - } - - /** - * Wrap an action handler with firing an event if the action is performed - * @param {Function} actionHandler the function to wrap - * @return {Function} a function with an action handler signature - */ - function wrapWithFireEvent(eventName, actionHandler) { - return function(eventData, transform, x, y) { - var actionPerformed = actionHandler(eventData, transform, x, y); - if (actionPerformed) { - fireEvent(eventName, commonEventInfo(eventData, transform, x, y)); - } - return actionPerformed; - }; - } - - /** - * Transforms a point described by x and y in a distance from the top left corner of the object - * bounding box. - * @param {Object} transform - * @param {String} originX - * @param {String} originY - * @param {number} x - * @param {number} y - * @return {Fabric.Point} the normalized point - */ - function getLocalPoint(transform, originX, originY, x, y) { - var target = transform.target, - control = target.controls[transform.corner], - zoom = target.canvas.getZoom(), - padding = target.padding / zoom, - localPoint = target.toLocalPoint(new fabric.Point(x, y), originX, originY); - if (localPoint.x >= padding) { - localPoint.x -= padding; - } - if (localPoint.x <= -padding) { - localPoint.x += padding; - } - if (localPoint.y >= padding) { - localPoint.y -= padding; - } - if (localPoint.y <= padding) { - localPoint.y += padding; - } - localPoint.x -= control.offsetX; - localPoint.y -= control.offsetY; - return localPoint; - } - - /** - * Detect if the fabric object is flipped on one side. - * @param {fabric.Object} target - * @return {Boolean} true if one flip, but not two. - */ - function targetHasOneFlip(target) { - return target.flipX !== target.flipY; - } - - /** - * Utility function to compensate the scale factor when skew is applied on both axes - * @private - */ - function compensateScaleForSkew(target, oppositeSkew, scaleToCompensate, axis, reference) { - if (target[oppositeSkew] !== 0) { - var newDim = target._getTransformedDimensions()[axis]; - var newValue = reference / newDim * target[scaleToCompensate]; - target.set(scaleToCompensate, newValue); - } - } - - /** - * Action handler for skewing on the X axis - * @private - */ - function skewObjectX(eventData, transform, x, y) { - var target = transform.target, - // find how big the object would be, if there was no skewX. takes in account scaling - dimNoSkew = target._getTransformedDimensions(0, target.skewY), - localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), - // the mouse is in the center of the object, and we want it to stay there. - // so the object will grow twice as much as the mouse. - // this makes the skew growth to localPoint * 2 - dimNoSkew. - totalSkewSize = Math.abs(localPoint.x * 2) - dimNoSkew.x, - currentSkew = target.skewX, newSkew; - if (totalSkewSize < 2) { - // let's make it easy to go back to position 0. - newSkew = 0; - } - else { - newSkew = radiansToDegrees( - Math.atan2((totalSkewSize / target.scaleX), (dimNoSkew.y / target.scaleY)) - ); - // now we have to find the sign of the skew. - // it mostly depend on the origin of transformation. - if (transform.originX === LEFT && transform.originY === BOTTOM) { - newSkew = -newSkew; - } - if (transform.originX === RIGHT && transform.originY === TOP) { - newSkew = -newSkew; - } - if (targetHasOneFlip(target)) { - newSkew = -newSkew; - } - } - var hasSkewed = currentSkew !== newSkew; - if (hasSkewed) { - var dimBeforeSkewing = target._getTransformedDimensions().y; - target.set('skewX', newSkew); - compensateScaleForSkew(target, 'skewY', 'scaleY', 'y', dimBeforeSkewing); - } - return hasSkewed; - } - - /** - * Action handler for skewing on the Y axis - * @private - */ - function skewObjectY(eventData, transform, x, y) { - var target = transform.target, - // find how big the object would be, if there was no skewX. takes in account scaling - dimNoSkew = target._getTransformedDimensions(target.skewX, 0), - localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), - // the mouse is in the center of the object, and we want it to stay there. - // so the object will grow twice as much as the mouse. - // this makes the skew growth to localPoint * 2 - dimNoSkew. - totalSkewSize = Math.abs(localPoint.y * 2) - dimNoSkew.y, - currentSkew = target.skewY, newSkew; - if (totalSkewSize < 2) { - // let's make it easy to go back to position 0. - newSkew = 0; - } - else { - newSkew = radiansToDegrees( - Math.atan2((totalSkewSize / target.scaleY), (dimNoSkew.x / target.scaleX)) - ); - // now we have to find the sign of the skew. - // it mostly depend on the origin of transformation. - if (transform.originX === LEFT && transform.originY === BOTTOM) { - newSkew = -newSkew; - } - if (transform.originX === RIGHT && transform.originY === TOP) { - newSkew = -newSkew; - } - if (targetHasOneFlip(target)) { - newSkew = -newSkew; - } - } - var hasSkewed = currentSkew !== newSkew; - if (hasSkewed) { - var dimBeforeSkewing = target._getTransformedDimensions().x; - target.set('skewY', newSkew); - compensateScaleForSkew(target, 'skewX', 'scaleX', 'x', dimBeforeSkewing); - } - return hasSkewed; - } - - /** - * Wrapped Action handler for skewing on the Y axis, takes care of the - * skew direction and determine the correct transform origin for the anchor point - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function skewHandlerX(eventData, transform, x, y) { - // step1 figure out and change transform origin. - // if skewX > 0 and originY bottom we anchor on right - // if skewX > 0 and originY top we anchor on left - // if skewX < 0 and originY bottom we anchor on left - // if skewX < 0 and originY top we anchor on right - // if skewX is 0, we look for mouse position to understand where are we going. - var target = transform.target, currentSkew = target.skewX, originX, originY = transform.originY; - if (target.lockSkewingX) { - return false; - } - if (currentSkew === 0) { - var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y); - if (localPointFromCenter.x > 0) { - // we are pulling right, anchor left; - originX = LEFT; - } - else { - // we are pulling right, anchor right - originX = RIGHT; - } - } - else { - if (currentSkew > 0) { - originX = originY === TOP ? LEFT : RIGHT; - } - if (currentSkew < 0) { - originX = originY === TOP ? RIGHT : LEFT; - } - // is the object flipped on one side only? swap the origin. - if (targetHasOneFlip(target)) { - originX = originX === LEFT ? RIGHT : LEFT; - } - } - - // once we have the origin, we find the anchor point - transform.originX = originX; - var finalHandler = wrapWithFireEvent('skewing', wrapWithFixedAnchor(skewObjectX)); - return finalHandler(eventData, transform, x, y); - } - - /** - * Wrapped Action handler for skewing on the Y axis, takes care of the - * skew direction and determine the correct transform origin for the anchor point - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function skewHandlerY(eventData, transform, x, y) { - // step1 figure out and change transform origin. - // if skewY > 0 and originX left we anchor on top - // if skewY > 0 and originX right we anchor on bottom - // if skewY < 0 and originX left we anchor on bottom - // if skewY < 0 and originX right we anchor on top - // if skewY is 0, we look for mouse position to understand where are we going. - var target = transform.target, currentSkew = target.skewY, originY, originX = transform.originX; - if (target.lockSkewingY) { - return false; - } - if (currentSkew === 0) { - var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y); - if (localPointFromCenter.y > 0) { - // we are pulling down, anchor up; - originY = TOP; - } - else { - // we are pulling up, anchor down - originY = BOTTOM; - } - } - else { - if (currentSkew > 0) { - originY = originX === LEFT ? TOP : BOTTOM; - } - if (currentSkew < 0) { - originY = originX === LEFT ? BOTTOM : TOP; - } - // is the object flipped on one side only? swap the origin. - if (targetHasOneFlip(target)) { - originY = originY === TOP ? BOTTOM : TOP; - } - } - - // once we have the origin, we find the anchor point - transform.originY = originY; - var finalHandler = wrapWithFireEvent('skewing', wrapWithFixedAnchor(skewObjectY)); - return finalHandler(eventData, transform, x, y); - } - - /** - * Action handler for rotation and snapping, without anchor point. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - * @private - */ - function rotationWithSnapping(eventData, transform, x, y) { - var t = transform, - target = t.target, - pivotPoint = target.translateToOriginPoint(target.getCenterPoint(), t.originX, t.originY); - - if (target.lockRotation) { - return false; - } - - var lastAngle = Math.atan2(t.ey - pivotPoint.y, t.ex - pivotPoint.x), - curAngle = Math.atan2(y - pivotPoint.y, x - pivotPoint.x), - angle = radiansToDegrees(curAngle - lastAngle + t.theta), - hasRotated = true; - - if (target.snapAngle > 0) { - var snapAngle = target.snapAngle, - snapThreshold = target.snapThreshold || snapAngle, - rightAngleLocked = Math.ceil(angle / snapAngle) * snapAngle, - leftAngleLocked = Math.floor(angle / snapAngle) * snapAngle; - - if (Math.abs(angle - leftAngleLocked) < snapThreshold) { - angle = leftAngleLocked; - } - else if (Math.abs(angle - rightAngleLocked) < snapThreshold) { - angle = rightAngleLocked; - } - } - - // normalize angle to positive value - if (angle < 0) { - angle = 360 + angle; - } - angle %= 360; - - hasRotated = target.angle !== angle; - target.angle = angle; - return hasRotated; - } - - /** - * Basic scaling logic, reused with different constrain for scaling X,Y, freely or equally. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @param {Object} options additional information for scaling - * @param {String} options.by 'x', 'y', 'equally' or '' to indicate type of scaling - * @return {Boolean} true if some change happened - * @private - */ - function scaleObject(eventData, transform, x, y, options) { - options = options || {}; - var target = transform.target, - lockScalingX = target.lockScalingX, lockScalingY = target.lockScalingY, - by = options.by, newPoint, scaleX, scaleY, dim, - scaleProportionally = scaleIsProportional(eventData, target), - forbidScaling = scalingIsForbidden(target, by, scaleProportionally), - signX, signY, gestureScale = transform.gestureScale; - - if (forbidScaling) { - return false; - } - if (gestureScale) { - scaleX = transform.scaleX * gestureScale; - scaleY = transform.scaleY * gestureScale; - } - else { - newPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y); - // use of sign: We use sign to detect change of direction of an action. sign usually change when - // we cross the origin point with the mouse. So a scale flip for example. There is an issue when scaling - // by center and scaling using one middle control ( default: mr, mt, ml, mb), the mouse movement can easily - // cross many time the origin point and flip the object. so we need a way to filter out the noise. - // This ternary here should be ok to filter out X scaling when we want Y only and vice versa. - signX = by !== 'y' ? sign(newPoint.x) : 1; - signY = by !== 'x' ? sign(newPoint.y) : 1; - if (!transform.signX) { - transform.signX = signX; - } - if (!transform.signY) { - transform.signY = signY; - } - - if (target.lockScalingFlip && - (transform.signX !== signX || transform.signY !== signY) - ) { - return false; - } +}; - dim = target._getTransformedDimensions(); - // missing detection of flip and logic to switch the origin - if (scaleProportionally && !by) { - // uniform scaling - var distance = Math.abs(newPoint.x) + Math.abs(newPoint.y), - original = transform.original, - originalDistance = Math.abs(dim.x * original.scaleX / target.scaleX) + - Math.abs(dim.y * original.scaleY / target.scaleY), - scale = distance / originalDistance; - scaleX = original.scaleX * scale; - scaleY = original.scaleY * scale; - } - else { - scaleX = Math.abs(newPoint.x * target.scaleX / dim.x); - scaleY = Math.abs(newPoint.y * target.scaleY / dim.y); - } - // if we are scaling by center, we need to double the scale - if (isTransformCentered(transform)) { - scaleX *= 2; - scaleY *= 2; - } - if (transform.signX !== signX && by !== 'y') { - transform.originX = opposite[transform.originX]; - scaleX *= -1; - transform.signX = signX; - } - if (transform.signY !== signY && by !== 'x') { - transform.originY = opposite[transform.originY]; - scaleY *= -1; - transform.signY = signY; - } - } - // minScale is taken are in the setter. - var oldScaleX = target.scaleX, oldScaleY = target.scaleY; - if (!by) { - !lockScalingX && target.set('scaleX', scaleX); - !lockScalingY && target.set('scaleY', scaleY); - } - else { - // forbidden cases already handled on top here. - by === 'x' && target.set('scaleX', scaleX); - by === 'y' && target.set('scaleY', scaleY); - } - return oldScaleX !== target.scaleX || oldScaleY !== target.scaleY; - } - - /** - * Generic scaling logic, to scale from corners either equally or freely. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scaleObjectFromCorner(eventData, transform, x, y) { - return scaleObject(eventData, transform, x, y); - } - - /** - * Scaling logic for the X axis. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scaleObjectX(eventData, transform, x, y) { - return scaleObject(eventData, transform, x, y , { by: 'x' }); - } - - /** - * Scaling logic for the Y axis. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scaleObjectY(eventData, transform, x, y) { - return scaleObject(eventData, transform, x, y , { by: 'y' }); - } - - /** - * Composed action handler to either scale Y or skew X - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scalingYOrSkewingX(eventData, transform, x, y) { - // ok some safety needed here. - if (eventData[transform.target.canvas.altActionKey]) { - return controls.skewHandlerX(eventData, transform, x, y); - } - return controls.scalingY(eventData, transform, x, y); - } - - /** - * Composed action handler to either scale X or skew Y - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scalingXOrSkewingY(eventData, transform, x, y) { - // ok some safety needed here. - if (eventData[transform.target.canvas.altActionKey]) { - return controls.skewHandlerY(eventData, transform, x, y); - } - return controls.scalingX(eventData, transform, x, y); - } - - /** - * Action handler to change textbox width - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function changeWidth(eventData, transform, x, y) { - var target = transform.target, localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), - strokePadding = target.strokeWidth / (target.strokeUniform ? target.scaleX : 1), - multiplier = isTransformCentered(transform) ? 2 : 1, - oldWidth = target.width, - newWidth = Math.abs(localPoint.x * multiplier / target.scaleX) - strokePadding; - target.set('width', Math.max(newWidth, 0)); - return oldWidth !== newWidth; - } - - /** - * Action handler - * @private - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if the translation occurred - */ - function dragHandler(eventData, transform, x, y) { - var target = transform.target, - newLeft = x - transform.offsetX, - newTop = y - transform.offsetY, - moveX = !target.get('lockMovementX') && target.left !== newLeft, - moveY = !target.get('lockMovementY') && target.top !== newTop; - moveX && target.set('left', newLeft); - moveY && target.set('top', newTop); - if (moveX || moveY) { - fireEvent('moving', commonEventInfo(eventData, transform, x, y)); - } - return moveX || moveY; - } - - controls.scaleCursorStyleHandler = scaleCursorStyleHandler; - controls.skewCursorStyleHandler = skewCursorStyleHandler; - controls.scaleSkewCursorStyleHandler = scaleSkewCursorStyleHandler; - controls.rotationWithSnapping = wrapWithFireEvent('rotating', wrapWithFixedAnchor(rotationWithSnapping)); - controls.scalingEqually = wrapWithFireEvent('scaling', wrapWithFixedAnchor( scaleObjectFromCorner)); - controls.scalingX = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectX)); - controls.scalingY = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectY)); - controls.scalingYOrSkewingX = scalingYOrSkewingX; - controls.scalingXOrSkewingY = scalingXOrSkewingY; - controls.changeWidth = wrapWithFireEvent('resizing', wrapWithFixedAnchor(changeWidth)); - controls.skewHandlerX = skewHandlerX; - controls.skewHandlerY = skewHandlerY; - controls.dragHandler = dragHandler; - controls.scaleOrSkewActionName = scaleOrSkewActionName; - controls.rotationStyleHandler = rotationStyleHandler; - controls.fireEvent = fireEvent; - controls.wrapWithFixedAnchor = wrapWithFixedAnchor; - controls.wrapWithFireEvent = wrapWithFireEvent; - controls.getLocalPoint = getLocalPoint; - fabric.controlsUtils = controls; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - degreesToRadians = fabric.util.degreesToRadians, - controls = fabric.controlsUtils; - - /** - * Render a round control, as per fabric features. - * This function is written to respect object properties like transparentCorners, cornerSize - * cornerColor, cornerStrokeColor - * plus the addition of offsetY and offsetX. - * @param {CanvasRenderingContext2D} ctx context to render on - * @param {Number} left x coordinate where the control center should be - * @param {Number} top y coordinate where the control center should be - * @param {Object} styleOverride override for fabric.Object controls style - * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls - */ - function renderCircleControl (ctx, left, top, styleOverride, fabricObject) { - styleOverride = styleOverride || {}; - var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize, - ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize, - transparentCorners = typeof styleOverride.transparentCorners !== 'undefined' ? - styleOverride.transparentCorners : fabricObject.transparentCorners, - methodName = transparentCorners ? 'stroke' : 'fill', - stroke = !transparentCorners && (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor), - myLeft = left, - myTop = top, size; - ctx.save(); - ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor; - ctx.strokeStyle = styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor; - // as soon as fabric react v5, remove ie11, use proper ellipse code. - if (xSize > ySize) { - size = xSize; - ctx.scale(1.0, ySize / xSize); - myTop = top * xSize / ySize; - } - else if (ySize > xSize) { - size = ySize; - ctx.scale(xSize / ySize, 1.0); - myLeft = left * ySize / xSize; - } - else { - size = xSize; - } - // this is still wrong - ctx.lineWidth = 1; - ctx.beginPath(); - ctx.arc(myLeft, myTop, size / 2, 0, 2 * Math.PI, false); - ctx[methodName](); - if (stroke) { - ctx.stroke(); - } - ctx.restore(); - } - - /** - * Render a square control, as per fabric features. - * This function is written to respect object properties like transparentCorners, cornerSize - * cornerColor, cornerStrokeColor - * plus the addition of offsetY and offsetX. - * @param {CanvasRenderingContext2D} ctx context to render on - * @param {Number} left x coordinate where the control center should be - * @param {Number} top y coordinate where the control center should be - * @param {Object} styleOverride override for fabric.Object controls style - * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls - */ - function renderSquareControl(ctx, left, top, styleOverride, fabricObject) { - styleOverride = styleOverride || {}; - var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize, - ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize, - transparentCorners = typeof styleOverride.transparentCorners !== 'undefined' ? - styleOverride.transparentCorners : fabricObject.transparentCorners, - methodName = transparentCorners ? 'stroke' : 'fill', - stroke = !transparentCorners && ( - styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor - ), xSizeBy2 = xSize / 2, ySizeBy2 = ySize / 2; - ctx.save(); - ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor; - ctx.strokeStyle = styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor; - // this is still wrong - ctx.lineWidth = 1; - ctx.translate(left, top); - ctx.rotate(degreesToRadians(fabricObject.angle)); - // this does not work, and fixed with ( && ) does not make sense. - // to have real transparent corners we need the controls on upperCanvas - // transparentCorners || ctx.clearRect(-xSizeBy2, -ySizeBy2, xSize, ySize); - ctx[methodName + 'Rect'](-xSizeBy2, -ySizeBy2, xSize, ySize); - if (stroke) { - ctx.strokeRect(-xSizeBy2, -ySizeBy2, xSize, ySize); - } - ctx.restore(); - } - - controls.renderCircleControl = renderCircleControl; - controls.renderSquareControl = renderSquareControl; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }); - - function Control(options) { - for (var i in options) { - this[i] = options[i]; - } - } - - fabric.Control = Control; - - fabric.Control.prototype = /** @lends fabric.Control.prototype */ { - - /** - * keep track of control visibility. - * mainly for backward compatibility. - * if you do not want to see a control, you can remove it - * from the controlset. - * @type {Boolean} - * @default true - */ - visible: true, - - /** - * Name of the action that the control will likely execute. - * This is optional. FabricJS uses to identify what the user is doing for some - * extra optimizations. If you are writing a custom control and you want to know - * somewhere else in the code what is going on, you can use this string here. - * you can also provide a custom getActionName if your control run multiple actions - * depending on some external state. - * default to scale since is the most common, used on 4 corners by default - * @type {String} - * @default 'scale' - */ - actionName: 'scale', - - /** - * Drawing angle of the control. - * NOT used for now, but name marked as needed for internal logic - * example: to reuse the same drawing function for different rotated controls - * @type {Number} - * @default 0 - */ - angle: 0, - - /** - * Relative position of the control. X - * 0,0 is the center of the Object, while -0.5 (left) or 0.5 (right) are the extremities - * of the bounding box. - * @type {Number} - * @default 0 - */ - x: 0, - - /** - * Relative position of the control. Y - * 0,0 is the center of the Object, while -0.5 (top) or 0.5 (bottom) are the extremities - * of the bounding box. - * @type {Number} - * @default 0 - */ - y: 0, - - /** - * Horizontal offset of the control from the defined position. In pixels - * Positive offset moves the control to the right, negative to the left. - * It used when you want to have position of control that does not scale with - * the bounding box. Example: rotation control is placed at x:0, y: 0.5 on - * the boundindbox, with an offset of 30 pixels vertically. Those 30 pixels will - * stay 30 pixels no matter how the object is big. Another example is having 2 - * controls in the corner, that stay in the same position when the object scale. - * of the bounding box. - * @type {Number} - * @default 0 - */ - offsetX: 0, - - /** - * Vertical offset of the control from the defined position. In pixels - * Positive offset moves the control to the bottom, negative to the top. - * @type {Number} - * @default 0 - */ - offsetY: 0, - - /** - * Sets the length of the control. If null, defaults to object's cornerSize. - * Expects both sizeX and sizeY to be set when set. - * @type {?Number} - * @default null - */ - sizeX: null, - - /** - * Sets the height of the control. If null, defaults to object's cornerSize. - * Expects both sizeX and sizeY to be set when set. - * @type {?Number} - * @default null - */ - sizeY: null, - - /** - * Sets the length of the touch area of the control. If null, defaults to object's touchCornerSize. - * Expects both touchSizeX and touchSizeY to be set when set. - * @type {?Number} - * @default null - */ - touchSizeX: null, - - /** - * Sets the height of the touch area of the control. If null, defaults to object's touchCornerSize. - * Expects both touchSizeX and touchSizeY to be set when set. - * @type {?Number} - * @default null - */ - touchSizeY: null, - - /** - * Css cursor style to display when the control is hovered. - * if the method `cursorStyleHandler` is provided, this property is ignored. - * @type {String} - * @default 'crosshair' - */ - cursorStyle: 'crosshair', - - /** - * If controls has an offsetY or offsetX, draw a line that connects - * the control to the bounding box - * @type {Boolean} - * @default false - */ - withConnection: false, - - /** - * The control actionHandler, provide one to handle action ( control being moved ) - * @param {Event} eventData the native mouse event - * @param {Object} transformData properties of the current transform - * @param {Number} x x position of the cursor - * @param {Number} y y position of the cursor - * @return {Boolean} true if the action/event modified the object - */ - actionHandler: function(/* eventData, transformData, x, y */) { }, - - /** - * The control handler for mouse down, provide one to handle mouse down on control - * @param {Event} eventData the native mouse event - * @param {Object} transformData properties of the current transform - * @param {Number} x x position of the cursor - * @param {Number} y y position of the cursor - * @return {Boolean} true if the action/event modified the object - */ - mouseDownHandler: function(/* eventData, transformData, x, y */) { }, - - /** - * The control mouseUpHandler, provide one to handle an effect on mouse up. - * @param {Event} eventData the native mouse event - * @param {Object} transformData properties of the current transform - * @param {Number} x x position of the cursor - * @param {Number} y y position of the cursor - * @return {Boolean} true if the action/event modified the object - */ - mouseUpHandler: function(/* eventData, transformData, x, y */) { }, - - /** - * Returns control actionHandler - * @param {Event} eventData the native mouse event - * @param {fabric.Object} fabricObject on which the control is displayed - * @param {fabric.Control} control control for which the action handler is being asked - * @return {Function} the action handler - */ - getActionHandler: function(/* eventData, fabricObject, control */) { - return this.actionHandler; - }, - - /** - * Returns control mouseDown handler - * @param {Event} eventData the native mouse event - * @param {fabric.Object} fabricObject on which the control is displayed - * @param {fabric.Control} control control for which the action handler is being asked - * @return {Function} the action handler - */ - getMouseDownHandler: function(/* eventData, fabricObject, control */) { - return this.mouseDownHandler; - }, - - /** - * Returns control mouseUp handler - * @param {Event} eventData the native mouse event - * @param {fabric.Object} fabricObject on which the control is displayed - * @param {fabric.Control} control control for which the action handler is being asked - * @return {Function} the action handler - */ - getMouseUpHandler: function(/* eventData, fabricObject, control */) { - return this.mouseUpHandler; - }, - - /** - * Returns control cursorStyle for css using cursorStyle. If you need a more elaborate - * function you can pass one in the constructor - * the cursorStyle property - * @param {Event} eventData the native mouse event - * @param {fabric.Control} control the current control ( likely this) - * @param {fabric.Object} object on which the control is displayed - * @return {String} - */ - cursorStyleHandler: function(eventData, control /* fabricObject */) { - return control.cursorStyle; - }, - - /** - * Returns the action name. The basic implementation just return the actionName property. - * @param {Event} eventData the native mouse event - * @param {fabric.Control} control the current control ( likely this) - * @param {fabric.Object} object on which the control is displayed - * @return {String} - */ - getActionName: function(eventData, control /* fabricObject */) { - return control.actionName; - }, - - /** - * Returns controls visibility - * @param {fabric.Object} object on which the control is displayed - * @param {String} controlKey key where the control is memorized on the - * @return {Boolean} - */ - getVisibility: function(fabricObject, controlKey) { - var objectVisibility = fabricObject._controlsVisibility; - if (objectVisibility && typeof objectVisibility[controlKey] !== 'undefined') { - return objectVisibility[controlKey]; - } - return this.visible; - }, - - /** - * Sets controls visibility - * @param {Boolean} visibility for the object - * @return {Void} - */ - setVisibility: function(visibility /* name, fabricObject */) { - this.visible = visibility; - }, - - - positionHandler: function(dim, finalMatrix /*, fabricObject, currentControl */) { - var point = fabric.util.transformPoint({ - x: this.x * dim.x + this.offsetX, - y: this.y * dim.y + this.offsetY }, finalMatrix); - return point; - }, - - /** - * Returns the coords for this control based on object values. - * @param {Number} objectAngle angle from the fabric object holding the control - * @param {Number} objectCornerSize cornerSize from the fabric object holding the control (or touchCornerSize if - * isTouch is true) - * @param {Number} centerX x coordinate where the control center should be - * @param {Number} centerY y coordinate where the control center should be - * @param {boolean} isTouch true if touch corner, false if normal corner - */ - calcCornerCoords: function(objectAngle, objectCornerSize, centerX, centerY, isTouch) { - var cosHalfOffset, - sinHalfOffset, - cosHalfOffsetComp, - sinHalfOffsetComp, - xSize = (isTouch) ? this.touchSizeX : this.sizeX, - ySize = (isTouch) ? this.touchSizeY : this.sizeY; - if (xSize && ySize && xSize !== ySize) { - // handle rectangular corners - var controlTriangleAngle = Math.atan2(ySize, xSize); - var cornerHypotenuse = Math.sqrt(xSize * xSize + ySize * ySize) / 2; - var newTheta = controlTriangleAngle - fabric.util.degreesToRadians(objectAngle); - var newThetaComp = Math.PI / 2 - controlTriangleAngle - fabric.util.degreesToRadians(objectAngle); - cosHalfOffset = cornerHypotenuse * fabric.util.cos(newTheta); - sinHalfOffset = cornerHypotenuse * fabric.util.sin(newTheta); - // use complementary angle for two corners - cosHalfOffsetComp = cornerHypotenuse * fabric.util.cos(newThetaComp); - sinHalfOffsetComp = cornerHypotenuse * fabric.util.sin(newThetaComp); - } - else { - // handle square corners - // use default object corner size unless size is defined - var cornerSize = (xSize && ySize) ? xSize : objectCornerSize; - /* 0.7071067812 stands for sqrt(2)/2 */ - cornerHypotenuse = cornerSize * 0.7071067812; - // complementary angles are equal since they're both 45 degrees - var newTheta = fabric.util.degreesToRadians(45 - objectAngle); - cosHalfOffset = cosHalfOffsetComp = cornerHypotenuse * fabric.util.cos(newTheta); - sinHalfOffset = sinHalfOffsetComp = cornerHypotenuse * fabric.util.sin(newTheta); - } - - return { - tl: { - x: centerX - sinHalfOffsetComp, - y: centerY - cosHalfOffsetComp, +//@ts-nocheck +(function (global) { + var fabric = global.fabric, addListener = fabric.util.addListener, removeListener = fabric.util.removeListener, RIGHT_CLICK = 3, MIDDLE_CLICK = 2, LEFT_CLICK = 1, addEventOptions = { passive: false }; + function checkClick(e, value) { + return e.button && e.button === value - 1; + } + fabric.util.object.extend(fabric.Canvas.prototype, + /** @lends fabric.Canvas.prototype */ { + /** + * Contains the id of the touch event that owns the fabric transform + * @type Number + * @private + */ + mainTouchId: null, + /** + * Adds mouse listeners to canvas + * @private + */ + _initEventListeners: function () { + // in case we initialized the class twice. This should not happen normally + // but in some kind of applications where the canvas element may be changed + // this is a workaround to having double listeners. + this.removeListeners(); + this._bindEvents(); + this.addOrRemove(addListener, 'add'); }, - tr: { - x: centerX + cosHalfOffset, - y: centerY - sinHalfOffset, + /** + * return an event prefix pointer or mouse. + * @private + */ + _getEventPrefix: function () { + return this.enablePointerEvents ? 'pointer' : 'mouse'; }, - bl: { - x: centerX - cosHalfOffset, - y: centerY + sinHalfOffset, + addOrRemove: function (functor, eventjsFunctor) { + var canvasElement = this.upperCanvasEl, eventTypePrefix = this._getEventPrefix(); + functor(fabric.window, 'resize', this._onResize); + functor(canvasElement, eventTypePrefix + 'down', this._onMouseDown); + functor(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + functor(canvasElement, eventTypePrefix + 'out', this._onMouseOut); + functor(canvasElement, eventTypePrefix + 'enter', this._onMouseEnter); + functor(canvasElement, 'wheel', this._onMouseWheel); + functor(canvasElement, 'contextmenu', this._onContextMenu); + functor(canvasElement, 'dblclick', this._onDoubleClick); + functor(canvasElement, 'dragstart', this._onDragStart); + functor(canvasElement, 'dragend', this._onDragEnd); + functor(canvasElement, 'dragover', this._onDragOver); + functor(canvasElement, 'dragenter', this._onDragEnter); + functor(canvasElement, 'dragleave', this._onDragLeave); + functor(canvasElement, 'drop', this._onDrop); + if (!this.enablePointerEvents) { + functor(canvasElement, 'touchstart', this._onTouchStart, addEventOptions); + } + if (typeof eventjs !== 'undefined' && eventjsFunctor in eventjs) { + eventjs[eventjsFunctor](canvasElement, 'gesture', this._onGesture); + eventjs[eventjsFunctor](canvasElement, 'drag', this._onDrag); + eventjs[eventjsFunctor](canvasElement, 'orientation', this._onOrientationChange); + eventjs[eventjsFunctor](canvasElement, 'shake', this._onShake); + eventjs[eventjsFunctor](canvasElement, 'longpress', this._onLongPress); + } }, - br: { - x: centerX + sinHalfOffsetComp, - y: centerY + cosHalfOffsetComp, + /** + * Removes all event listeners + */ + removeListeners: function () { + this.addOrRemove(removeListener, 'remove'); + // if you dispose on a mouseDown, before mouse up, you need to clean document to... + var eventTypePrefix = this._getEventPrefix(); + removeListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); + removeListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); + removeListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + removeListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); + }, + /** + * @private + */ + _bindEvents: function () { + if (this.eventsBound) { + // for any reason we pass here twice we do not want to bind events twice. + return; + } + this._onMouseDown = this._onMouseDown.bind(this); + this._onTouchStart = this._onTouchStart.bind(this); + this._onMouseMove = this._onMouseMove.bind(this); + this._onMouseUp = this._onMouseUp.bind(this); + this._onTouchEnd = this._onTouchEnd.bind(this); + this._onResize = this._onResize.bind(this); + this._onGesture = this._onGesture.bind(this); + this._onDrag = this._onDrag.bind(this); + this._onShake = this._onShake.bind(this); + this._onLongPress = this._onLongPress.bind(this); + this._onOrientationChange = this._onOrientationChange.bind(this); + this._onMouseWheel = this._onMouseWheel.bind(this); + this._onMouseOut = this._onMouseOut.bind(this); + this._onMouseEnter = this._onMouseEnter.bind(this); + this._onContextMenu = this._onContextMenu.bind(this); + this._onDoubleClick = this._onDoubleClick.bind(this); + this._onDragStart = this._onDragStart.bind(this); + this._onDragEnd = this._onDragEnd.bind(this); + this._onDragProgress = this._onDragProgress.bind(this); + this._onDragOver = this._onDragOver.bind(this); + this._onDragEnter = this._onDragEnter.bind(this); + this._onDragLeave = this._onDragLeave.bind(this); + this._onDrop = this._onDrop.bind(this); + this.eventsBound = true; + }, + /** + * @private + * @param {Event} [e] Event object fired on Event.js gesture + * @param {Event} [self] Inner Event object + */ + _onGesture: function (e, self) { + this.__onTransformGesture && this.__onTransformGesture(e, self); + }, + /** + * @private + * @param {Event} [e] Event object fired on Event.js drag + * @param {Event} [self] Inner Event object + */ + _onDrag: function (e, self) { + this.__onDrag && this.__onDrag(e, self); + }, + /** + * @private + * @param {Event} [e] Event object fired on wheel event + */ + _onMouseWheel: function (e) { + this.__onMouseWheel(e); + }, + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onMouseOut: function (e) { + var target = this._hoveredTarget; + this.fire('mouse:out', { target: target, e: e }); + this._hoveredTarget = null; + target && target.fire('mouseout', { e: e }); + this._hoveredTargets.forEach(function (nestedTarget) { + this.fire('mouse:out', { target: nestedTarget, e: e }); + nestedTarget && nestedTarget.fire('mouseout', { e: e }); + }, this); + this._hoveredTargets = []; + }, + /** + * @private + * @param {Event} e Event object fired on mouseenter + */ + _onMouseEnter: function (e) { + // This find target and consequent 'mouse:over' is used to + // clear old instances on hovered target. + // calling findTarget has the side effect of killing target.__corner. + // as a short term fix we are not firing this if we are currently transforming. + // as a long term fix we need to separate the action of finding a target with the + // side effects we added to it. + if (!this._currentTransform && !this.findTarget(e)) { + this.fire('mouse:over', { target: null, e: e }); + this._hoveredTarget = null; + this._hoveredTargets = []; + } + }, + /** + * @private + * @param {Event} [e] Event object fired on Event.js orientation change + * @param {Event} [self] Inner Event object + */ + _onOrientationChange: function (e, self) { + this.__onOrientationChange && this.__onOrientationChange(e, self); + }, + /** + * @private + * @param {Event} [e] Event object fired on Event.js shake + * @param {Event} [self] Inner Event object + */ + _onShake: function (e, self) { + this.__onShake && this.__onShake(e, self); + }, + /** + * @private + * @param {Event} [e] Event object fired on Event.js shake + * @param {Event} [self] Inner Event object + */ + _onLongPress: function (e, self) { + this.__onLongPress && this.__onLongPress(e, self); + }, + /** + * supports native like text dragging + * @private + * @param {DragEvent} e + */ + _onDragStart: function (e) { + var activeObject = this.getActiveObject(); + if (activeObject && + typeof activeObject.onDragStart === 'function' && + activeObject.onDragStart(e)) { + this._dragSource = activeObject; + var options = { e: e, target: activeObject }; + this.fire('dragstart', options); + activeObject.fire('dragstart', options); + addListener(this.upperCanvasEl, 'drag', this._onDragProgress); + return; + } + e.preventDefault(); + e.stopPropagation(); + }, + /** + * @private + */ + _renderDragEffects: function (e, source, target) { + var ctx = this.contextTop; + if (source) { + source.clearContextTop(true); + source.renderDragSourceEffect(e); + } + if (target) { + if (target !== source) { + ctx.restore(); + ctx.save(); + target.clearContextTop(true); + } + target.renderDropTargetEffect(e); + } + ctx.restore(); + }, + /** + * supports native like text dragging + * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#finishing_a_drag + * @private + * @param {DragEvent} e + */ + _onDragEnd: function (e) { + var didDrop = e.dataTransfer.dropEffect !== 'none', dropTarget = didDrop ? this._activeObject : undefined, options = { + e: e, + target: this._dragSource, + subTargets: this.targets, + dragSource: this._dragSource, + didDrop: didDrop, + dropTarget: dropTarget, + }; + removeListener(this.upperCanvasEl, 'drag', this._onDragProgress); + this.fire('dragend', options); + this._dragSource && this._dragSource.fire('dragend', options); + delete this._dragSource; + // we need to call mouse up synthetically because the browser won't + this._onMouseUp(e); + }, + /** + * fire `drag` event on canvas and drag source + * @private + * @param {DragEvent} e + */ + _onDragProgress: function (e) { + var options = { + e: e, + dragSource: this._dragSource, + dropTarget: this._draggedoverTarget, + }; + this.fire('drag', options); + this._dragSource && this._dragSource.fire('drag', options); + }, + /** + * prevent default to allow drop event to be fired + * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#specifying_drop_targets + * @private + * @param {Event} [e] Event object fired on Event.js shake + */ + _onDragOver: function (e) { + var eventType = 'dragover', target = this.findTarget(e), targets = this.targets, options = { + e: e, + target: target, + subTargets: targets, + dragSource: this._dragSource, + canDrop: false, + dropTarget: undefined, + }, dropTarget; + // fire on canvas + this.fire(eventType, options); + // make sure we fire dragenter events before dragover + // if dragleave is needed, object will not fire dragover so we don't need to trouble ourselves with it + this._fireEnterLeaveEvents(target, options); + if (target) { + // render drag selection before rendering target cursor for correct visuals + if (target.canDrop(e)) { + dropTarget = target; + } + target.fire(eventType, options); + } + // propagate the event to subtargets + for (var i = 0; i < targets.length; i++) { + target = targets[i]; + // accept event only if previous targets didn't + if (!e.defaultPrevented && target.canDrop(e)) { + dropTarget = target; + } + target.fire(eventType, options); + } + // render drag effects now that relations between source and target is clear + this._renderDragEffects(e, this._dragSource, dropTarget); + }, + /** + * fire `dragleave` on `dragover` targets + * @private + * @param {Event} [e] Event object fired on Event.js shake + */ + _onDragEnter: function (e) { + var target = this.findTarget(e); + var options = { + e: e, + target: target, + subTargets: this.targets, + dragSource: this._dragSource, + }; + this.fire('dragenter', options); + // fire dragenter on targets + this._fireEnterLeaveEvents(target, options); + }, + /** + * fire `dragleave` on `dragover` targets + * @private + * @param {Event} [e] Event object fired on Event.js shake + */ + _onDragLeave: function (e) { + var options = { + e: e, + target: this._draggedoverTarget, + subTargets: this.targets, + dragSource: this._dragSource, + }; + this.fire('dragleave', options); + // fire dragleave on targets + this._fireEnterLeaveEvents(null, options); + // clear targets + this.targets = []; + this._hoveredTargets = []; + }, + /** + * `drop:before` is a an event that allows you to schedule logic + * before the `drop` event. Prefer `drop` event always, but if you need + * to run some drop-disabling logic on an event, since there is no way + * to handle event handlers ordering, use `drop:before` + * @private + * @param {Event} e + */ + _onDrop: function (e) { + var options = this._simpleEventHandler('drop:before', e, { + dragSource: this._dragSource, + pointer: this.getPointer(e), + }); + // will be set by the drop target + options.didDrop = false; + // will be set by the drop target, used in case options.target refuses the drop + options.dropTarget = undefined; + // fire `drop` + this._basicEventHandler('drop', options); + // inform canvas of the drop + // we do this because canvas was unaware of what happened at the time the `drop` event was fired on it + // use for side effects + this.fire('drop:after', options); + }, + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onContextMenu: function (e) { + var options = this._simpleEventHandler('contextmenu:before', e); + if (this.stopContextMenu) { + e.stopPropagation(); + e.preventDefault(); + } + this._basicEventHandler('contextmenu', options); + return false; + }, + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onDoubleClick: function (e) { + this._cacheTransformEventData(e); + this._handleEvent(e, 'dblclick'); + this._resetTransformEventData(); + }, + /** + * Return a the id of an event. + * returns either the pointerId or the identifier or 0 for the mouse event + * @private + * @param {Event} evt Event object + */ + getPointerId: function (evt) { + var changedTouches = evt.changedTouches; + if (changedTouches) { + return changedTouches[0] && changedTouches[0].identifier; + } + if (this.enablePointerEvents) { + return evt.pointerId; + } + return -1; + }, + /** + * Determines if an event has the id of the event that is considered main + * @private + * @param {evt} event Event object + */ + _isMainEvent: function (evt) { + if (evt.isPrimary === true) { + return true; + } + if (evt.isPrimary === false) { + return false; + } + if (evt.type === 'touchend' && evt.touches.length === 0) { + return true; + } + if (evt.changedTouches) { + return evt.changedTouches[0].identifier === this.mainTouchId; + } + return true; + }, + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onTouchStart: function (e) { + e.preventDefault(); + if (this.mainTouchId === null) { + this.mainTouchId = this.getPointerId(e); + } + this.__onMouseDown(e); + this._resetTransformEventData(); + var canvasElement = this.upperCanvasEl, eventTypePrefix = this._getEventPrefix(); + addListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); + addListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); + // Unbind mousedown to prevent double triggers from touch devices + removeListener(canvasElement, eventTypePrefix + 'down', this._onMouseDown); + }, + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onMouseDown: function (e) { + this.__onMouseDown(e); + this._resetTransformEventData(); + var canvasElement = this.upperCanvasEl, eventTypePrefix = this._getEventPrefix(); + removeListener(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + addListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); + addListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + }, + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onTouchEnd: function (e) { + if (e.touches.length > 0) { + // if there are still touches stop here + return; + } + this.__onMouseUp(e); + this._resetTransformEventData(); + this.mainTouchId = null; + var eventTypePrefix = this._getEventPrefix(); + removeListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); + removeListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); + var _this = this; + if (this._willAddMouseDown) { + clearTimeout(this._willAddMouseDown); + } + this._willAddMouseDown = setTimeout(function () { + // Wait 400ms before rebinding mousedown to prevent double triggers + // from touch devices + addListener(_this.upperCanvasEl, eventTypePrefix + 'down', _this._onMouseDown); + _this._willAddMouseDown = 0; + }, 400); + }, + /** + * @private + * @param {Event} e Event object fired on mouseup + */ + _onMouseUp: function (e) { + this.__onMouseUp(e); + this._resetTransformEventData(); + var canvasElement = this.upperCanvasEl, eventTypePrefix = this._getEventPrefix(); + if (this._isMainEvent(e)) { + removeListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); + removeListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + addListener(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + } + }, + /** + * @private + * @param {Event} e Event object fired on mousemove + */ + _onMouseMove: function (e) { + var activeObject = this.getActiveObject(); + !this.allowTouchScrolling && + (!activeObject || !activeObject.__isDragging) && + e.preventDefault && + e.preventDefault(); + this.__onMouseMove(e); + }, + /** + * @private + */ + _onResize: function () { + this.calcOffset(); + this._resetTransformEventData(); + }, + /** + * Decides whether the canvas should be redrawn in mouseup and mousedown events. + * @private + * @param {Object} target + */ + _shouldRender: function (target) { + var activeObject = this._activeObject; + if (!!activeObject !== !!target || + (activeObject && target && activeObject !== target)) { + // this covers: switch of target, from target to no target, selection of target + // multiSelection with key and mouse + return true; + } + else if (activeObject && activeObject.isEditing) { + // if we mouse up/down over a editing textbox a cursor change, + // there is no need to re render + return false; + } + return false; + }, + /** + * Method that defines the actions when mouse is released on canvas. + * The method resets the currentTransform parameters, store the image corner + * position in the image object and render the canvas on top. + * @private + * @param {Event} e Event object fired on mouseup + */ + __onMouseUp: function (e) { + var target, transform = this._currentTransform, groupSelector = this._groupSelector, shouldRender = false, isClick = !groupSelector || + (groupSelector.left === 0 && groupSelector.top === 0); + this._cacheTransformEventData(e); + target = this._target; + this._handleEvent(e, 'up:before'); + // if right/middle click just fire events and return + // target undefined will make the _handleEvent search the target + if (checkClick(e, RIGHT_CLICK)) { + if (this.fireRightClick) { + this._handleEvent(e, 'up', RIGHT_CLICK, isClick); + } + return; + } + if (checkClick(e, MIDDLE_CLICK)) { + if (this.fireMiddleClick) { + this._handleEvent(e, 'up', MIDDLE_CLICK, isClick); + } + this._resetTransformEventData(); + return; + } + if (this.isDrawingMode && this._isCurrentlyDrawing) { + this._onMouseUpInDrawingMode(e); + return; + } + if (!this._isMainEvent(e)) { + return; + } + if (transform) { + this._finalizeCurrentTransform(e); + shouldRender = transform.actionPerformed; + } + if (!isClick) { + var targetWasActive = target === this._activeObject; + this._maybeGroupObjects(e); + if (!shouldRender) { + shouldRender = + this._shouldRender(target) || + (!targetWasActive && target === this._activeObject); + } + } + var corner, pointer; + if (target) { + corner = target._findTargetCorner(this.getPointer(e, true), fabric.util.isTouchEvent(e)); + if (target.selectable && + target !== this._activeObject && + target.activeOn === 'up') { + this.setActiveObject(target, e); + shouldRender = true; + } + else { + var control = target.controls[corner], mouseUpHandler = control && control.getMouseUpHandler(e, target, control); + if (mouseUpHandler) { + pointer = this.getPointer(e); + mouseUpHandler(e, transform, pointer.x, pointer.y); + } + } + target.isMoving = false; + } + // if we are ending up a transform on a different control or a new object + // fire the original mouse up from the corner that started the transform + if (transform && + (transform.target !== target || transform.corner !== corner)) { + var originalControl = transform.target && transform.target.controls[transform.corner], originalMouseUpHandler = originalControl && + originalControl.getMouseUpHandler(e, target, control); + pointer = pointer || this.getPointer(e); + originalMouseUpHandler && + originalMouseUpHandler(e, transform, pointer.x, pointer.y); + } + this._setCursorFromEvent(e, target); + this._handleEvent(e, 'up', LEFT_CLICK, isClick); + this._groupSelector = null; + this._currentTransform = null; + // reset the target information about which corner is selected + target && (target.__corner = 0); + if (shouldRender) { + this.requestRenderAll(); + } + else if (!isClick) { + this.renderTop(); + } + }, + /** + * @private + * Handle event firing for target and subtargets + * @param {Event} e event from mouse + * @param {String} eventType event to fire (up, down or move) + * @param {object} [data] event data overrides + * @return {object} options + */ + _simpleEventHandler: function (eventType, e, data) { + var target = this.findTarget(e), subTargets = this.targets || []; + return this._basicEventHandler(eventType, Object.assign({}, { + e: e, + target: target, + subTargets: subTargets, + }, data)); + }, + _basicEventHandler: function (eventType, options) { + var target = options.target, subTargets = options.subTargets; + this.fire(eventType, options); + target && target.fire(eventType, options); + for (var i = 0; i < subTargets.length; i++) { + subTargets[i].fire(eventType, options); + } + return options; + }, + /** + * @private + * Handle event firing for target and subtargets + * @param {Event} e event from mouse + * @param {String} eventType event to fire (up, down or move) + * @param {fabric.Object} targetObj receiving event + * @param {Number} [button] button used in the event 1 = left, 2 = middle, 3 = right + * @param {Boolean} isClick for left button only, indicates that the mouse up happened without move. + */ + _handleEvent: function (e, eventType, button, isClick) { + var target = this._target, targets = this.targets || [], options = { + e: e, + target: target, + subTargets: targets, + button: button || LEFT_CLICK, + isClick: isClick || false, + pointer: this._pointer, + absolutePointer: this._absolutePointer, + transform: this._currentTransform, + }; + if (eventType === 'up') { + options.currentTarget = this.findTarget(e); + options.currentSubTargets = this.targets; + } + this.fire('mouse:' + eventType, options); + target && target.fire('mouse' + eventType, options); + for (var i = 0; i < targets.length; i++) { + targets[i].fire('mouse' + eventType, options); + } + }, + /** + * End the current transfrom. + * You don't usually need to call this method unless you are interupting a user initiated transform + * because of some other event ( a press of key combination, or something that block the user UX ) + * @param {Event} [e] send the mouse event that generate the finalize down, so it can be used in the event + */ + endCurrentTransform: function (e) { + var transform = this._currentTransform; + this._finalizeCurrentTransform(e); + if (transform && transform.target) { + // this could probably go inside _finalizeCurrentTransform + transform.target.isMoving = false; + } + this._currentTransform = null; + }, + /** + * @private + * @param {Event} e send the mouse event that generate the finalize down, so it can be used in the event + */ + _finalizeCurrentTransform: function (e) { + var transform = this._currentTransform, target = transform.target, options = { + e: e, + target: target, + transform: transform, + action: transform.action, + }; + if (target._scaling) { + target._scaling = false; + } + target.setCoords(); + if (transform.actionPerformed || + (this.stateful && target.hasStateChanged())) { + this._fire('modified', options); + } + }, + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onMouseDownInDrawingMode: function (e) { + this._isCurrentlyDrawing = true; + if (this.getActiveObject()) { + this.discardActiveObject(e).requestRenderAll(); + } + var pointer = this.getPointer(e); + this.freeDrawingBrush.onMouseDown(pointer, { e: e, pointer: pointer }); + this._handleEvent(e, 'down'); + }, + /** + * @private + * @param {Event} e Event object fired on mousemove + */ + _onMouseMoveInDrawingMode: function (e) { + if (this._isCurrentlyDrawing) { + var pointer = this.getPointer(e); + this.freeDrawingBrush.onMouseMove(pointer, { + e: e, + pointer: pointer, + }); + } + this.setCursor(this.freeDrawingCursor); + this._handleEvent(e, 'move'); + }, + /** + * @private + * @param {Event} e Event object fired on mouseup + */ + _onMouseUpInDrawingMode: function (e) { + var pointer = this.getPointer(e); + this._isCurrentlyDrawing = this.freeDrawingBrush.onMouseUp({ + e: e, + pointer: pointer, + }); + this._handleEvent(e, 'up'); + }, + /** + * Method that defines the actions when mouse is clicked on canvas. + * The method inits the currentTransform parameters and renders all the + * canvas so the current image can be placed on the top canvas and the rest + * in on the container one. + * @private + * @param {Event} e Event object fired on mousedown + */ + __onMouseDown: function (e) { + this._cacheTransformEventData(e); + this._handleEvent(e, 'down:before'); + var target = this._target; + // if right click just fire events + if (checkClick(e, RIGHT_CLICK)) { + if (this.fireRightClick) { + this._handleEvent(e, 'down', RIGHT_CLICK); + } + return; + } + if (checkClick(e, MIDDLE_CLICK)) { + if (this.fireMiddleClick) { + this._handleEvent(e, 'down', MIDDLE_CLICK); + } + return; + } + if (this.isDrawingMode) { + this._onMouseDownInDrawingMode(e); + return; + } + if (!this._isMainEvent(e)) { + return; + } + // ignore if some object is being transformed at this moment + if (this._currentTransform) { + return; + } + var pointer = this._pointer; + // save pointer for check in __onMouseUp event + this._previousPointer = pointer; + var shouldRender = this._shouldRender(target), shouldGroup = this._shouldGroup(e, target); + if (this._shouldClearSelection(e, target)) { + this.discardActiveObject(e); + } + else if (shouldGroup) { + this._handleGrouping(e, target); + target = this._activeObject; + } + if (this.selection && + (!target || + (!target.selectable && + !target.isEditing && + target !== this._activeObject))) { + this._groupSelector = { + ex: this._absolutePointer.x, + ey: this._absolutePointer.y, + top: 0, + left: 0, + }; + } + if (target) { + var alreadySelected = target === this._activeObject; + if (target.selectable && target.activeOn === 'down') { + this.setActiveObject(target, e); + } + var corner = target._findTargetCorner(this.getPointer(e, true), fabric.util.isTouchEvent(e)); + target.__corner = corner; + if (target === this._activeObject && (corner || !shouldGroup)) { + this._setupCurrentTransform(e, target, alreadySelected); + var control = target.controls[corner], pointer = this.getPointer(e), mouseDownHandler = control && control.getMouseDownHandler(e, target, control); + if (mouseDownHandler) { + mouseDownHandler(e, this._currentTransform, pointer.x, pointer.y); + } + } + } + var invalidate = shouldRender || shouldGroup; + // we clear `_objectsToRender` in case of a change in order to repopulate it at rendering + // run before firing the `down` event to give the dev a chance to populate it themselves + invalidate && (this._objectsToRender = undefined); + this._handleEvent(e, 'down'); + // we must renderAll so that we update the visuals + invalidate && this.requestRenderAll(); + }, + /** + * reset cache form common information needed during event processing + * @private + */ + _resetTransformEventData: function () { + this._target = null; + this._pointer = null; + this._absolutePointer = null; + }, + /** + * Cache common information needed during event processing + * @private + * @param {Event} e Event object fired on event + */ + _cacheTransformEventData: function (e) { + // reset in order to avoid stale caching + this._resetTransformEventData(); + this._pointer = this.getPointer(e, true); + this._absolutePointer = this.restorePointerVpt(this._pointer); + this._target = this._currentTransform + ? this._currentTransform.target + : this.findTarget(e) || null; + }, + /** + * @private + */ + _beforeTransform: function (e) { + var t = this._currentTransform; + this.stateful && t.target.saveState(); + this.fire('before:transform', { + e: e, + transform: t, + }); + }, + /** + * Method that defines the actions when mouse is hovering the canvas. + * The currentTransform parameter will define whether the user is rotating/scaling/translating + * an image or neither of them (only hovering). A group selection is also possible and would cancel + * all any other type of action. + * In case of an image transformation only the top canvas will be rendered. + * @private + * @param {Event} e Event object fired on mousemove + */ + __onMouseMove: function (e) { + this._handleEvent(e, 'move:before'); + this._cacheTransformEventData(e); + var target, pointer; + if (this.isDrawingMode) { + this._onMouseMoveInDrawingMode(e); + return; + } + if (!this._isMainEvent(e)) { + return; + } + var groupSelector = this._groupSelector; + // We initially clicked in an empty area, so we draw a box for multiple selection + if (groupSelector) { + pointer = this._absolutePointer; + groupSelector.left = pointer.x - groupSelector.ex; + groupSelector.top = pointer.y - groupSelector.ey; + this.renderTop(); + } + else if (!this._currentTransform) { + target = this.findTarget(e) || null; + this._setCursorFromEvent(e, target); + this._fireOverOutEvents(target, e); + } + else { + this._transformObject(e); + } + this._handleEvent(e, 'move'); + this._resetTransformEventData(); + }, + /** + * Manage the mouseout, mouseover events for the fabric object on the canvas + * @param {Fabric.Object} target the target where the target from the mousemove event + * @param {Event} e Event object fired on mousemove + * @private + */ + _fireOverOutEvents: function (target, e) { + var _hoveredTarget = this._hoveredTarget, _hoveredTargets = this._hoveredTargets, targets = this.targets, length = Math.max(_hoveredTargets.length, targets.length); + this.fireSyntheticInOutEvents(target, { e: e }, { + oldTarget: _hoveredTarget, + evtOut: 'mouseout', + canvasEvtOut: 'mouse:out', + evtIn: 'mouseover', + canvasEvtIn: 'mouse:over', + }); + for (var i = 0; i < length; i++) { + this.fireSyntheticInOutEvents(targets[i], { e: e }, { + oldTarget: _hoveredTargets[i], + evtOut: 'mouseout', + evtIn: 'mouseover', + }); + } + this._hoveredTarget = target; + this._hoveredTargets = this.targets.concat(); + }, + /** + * Manage the dragEnter, dragLeave events for the fabric objects on the canvas + * @param {Fabric.Object} target the target where the target from the onDrag event + * @param {Object} data Event object fired on dragover + * @private + */ + _fireEnterLeaveEvents: function (target, data) { + var _draggedoverTarget = this._draggedoverTarget, _hoveredTargets = this._hoveredTargets, targets = this.targets, length = Math.max(_hoveredTargets.length, targets.length); + this.fireSyntheticInOutEvents(target, data, { + oldTarget: _draggedoverTarget, + evtOut: 'dragleave', + evtIn: 'dragenter', + canvasEvtIn: 'drag:enter', + canvasEvtOut: 'drag:leave', + }); + for (var i = 0; i < length; i++) { + this.fireSyntheticInOutEvents(targets[i], data, { + oldTarget: _hoveredTargets[i], + evtOut: 'dragleave', + evtIn: 'dragenter', + }); + } + this._draggedoverTarget = target; + }, + /** + * Manage the synthetic in/out events for the fabric objects on the canvas + * @param {Fabric.Object} target the target where the target from the supported events + * @param {Object} data Event object fired + * @param {Object} config configuration for the function to work + * @param {String} config.targetName property on the canvas where the old target is stored + * @param {String} [config.canvasEvtOut] name of the event to fire at canvas level for out + * @param {String} config.evtOut name of the event to fire for out + * @param {String} [config.canvasEvtIn] name of the event to fire at canvas level for in + * @param {String} config.evtIn name of the event to fire for in + * @private + */ + fireSyntheticInOutEvents: function (target, data, config) { + var inOpt, outOpt, oldTarget = config.oldTarget, outFires, inFires, targetChanged = oldTarget !== target, canvasEvtIn = config.canvasEvtIn, canvasEvtOut = config.canvasEvtOut; + if (targetChanged) { + inOpt = Object.assign({}, data, { + target: target, + previousTarget: oldTarget, + }); + outOpt = Object.assign({}, data, { + target: oldTarget, + nextTarget: target, + }); + } + inFires = target && targetChanged; + outFires = oldTarget && targetChanged; + if (outFires) { + canvasEvtOut && this.fire(canvasEvtOut, outOpt); + oldTarget.fire(config.evtOut, outOpt); + } + if (inFires) { + canvasEvtIn && this.fire(canvasEvtIn, inOpt); + target.fire(config.evtIn, inOpt); + } + }, + /** + * Method that defines actions when an Event Mouse Wheel + * @param {Event} e Event object fired on mouseup + */ + __onMouseWheel: function (e) { + this._cacheTransformEventData(e); + this._handleEvent(e, 'wheel'); + this._resetTransformEventData(); + }, + /** + * @private + * @param {Event} e Event fired on mousemove + */ + _transformObject: function (e) { + var pointer = this.getPointer(e), transform = this._currentTransform, target = transform.target, + // transform pointer to target's containing coordinate plane + // both pointer and object should agree on every point + localPointer = target.group + ? fabric.util.sendPointToPlane(pointer, undefined, target.group.calcTransformMatrix()) + : pointer; + transform.reset = false; + transform.shiftKey = e.shiftKey; + transform.altKey = e[this.centeredKey]; + this._performTransformAction(e, transform, localPointer); + transform.actionPerformed && this.requestRenderAll(); + }, + /** + * @private + */ + _performTransformAction: function (e, transform, pointer) { + var x = pointer.x, y = pointer.y, action = transform.action, actionPerformed = false, actionHandler = transform.actionHandler; + // this object could be created from the function in the control handlers + if (actionHandler) { + actionPerformed = actionHandler(e, transform, x, y); + } + if (action === 'drag' && actionPerformed) { + transform.target.isMoving = true; + this.setCursor(transform.target.moveCursor || this.moveCursor); + } + transform.actionPerformed = + transform.actionPerformed || actionPerformed; + }, + /** + * @private + */ + _fire: function (eventName, options) { + return fireEvent(eventName, options); + }, + /** + * Sets the cursor depending on where the canvas is being hovered. + * Note: very buggy in Opera + * @param {Event} e Event object + * @param {Object} target Object that the mouse is hovering, if so. + */ + _setCursorFromEvent: function (e, target) { + if (!target) { + this.setCursor(this.defaultCursor); + return false; + } + var hoverCursor = target.hoverCursor || this.hoverCursor, activeSelection = this._activeObject && this._activeObject.type === 'activeSelection' + ? this._activeObject + : null, + // only show proper corner when group selection is not active + corner = (!activeSelection || !activeSelection.contains(target)) && + // here we call findTargetCorner always with undefined for the touch parameter. + // we assume that if you are using a cursor you do not need to interact with + // the bigger touch area. + target._findTargetCorner(this.getPointer(e, true)); + if (!corner) { + if (target.subTargetCheck) { + // hoverCursor should come from top-most subTarget, + // so we walk the array backwards + this.targets + .concat() + .reverse() + .map(function (_target) { + hoverCursor = _target.hoverCursor || hoverCursor; + }); + } + this.setCursor(hoverCursor); + } + else { + this.setCursor(this.getCornerCursor(corner, target, e)); + } + }, + /** + * @private + */ + getCornerCursor: function (corner, target, e) { + var control = target.controls[corner]; + return control.cursorStyleHandler(e, control, target); }, - }; - }, - - /** - * Render function for the control. - * When this function runs the context is unscaled. unrotate. Just retina scaled. - * all the functions will have to translate to the point left,top before starting Drawing - * if they want to draw a control where the position is detected. - * left and top are the result of the positionHandler function - * @param {RenderingContext2D} ctx the context where the control will be drawn - * @param {Number} left position of the canvas where we are about to render the control. - * @param {Number} top position of the canvas where we are about to render the control. - * @param {Object} styleOverride - * @param {fabric.Object} fabricObject the object where the control is about to be rendered - */ - render: function(ctx, left, top, styleOverride, fabricObject) { - styleOverride = styleOverride || {}; - switch (styleOverride.cornerStyle || fabricObject.cornerStyle) { - case 'circle': - fabric.controlsUtils.renderCircleControl.call(this, ctx, left, top, styleOverride, fabricObject); - break; - default: - fabric.controlsUtils.renderSquareControl.call(this, ctx, left, top, styleOverride, fabricObject); - } - }, - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function() { - - /* _FROM_SVG_START_ */ - function getColorStop(el, multiplier) { - var style = el.getAttribute('style'), - offset = el.getAttribute('offset') || 0, - color, colorAlpha, opacity, i; - - // convert percents to absolute values - offset = parseFloat(offset) / (/%$/.test(offset) ? 100 : 1); - offset = offset < 0 ? 0 : offset > 1 ? 1 : offset; - if (style) { - var keyValuePairs = style.split(/\s*;\s*/); - - if (keyValuePairs[keyValuePairs.length - 1] === '') { - keyValuePairs.pop(); - } - - for (i = keyValuePairs.length; i--; ) { - - var split = keyValuePairs[i].split(/\s*:\s*/), - key = split[0].trim(), - value = split[1].trim(); - - if (key === 'stop-color') { - color = value; - } - else if (key === 'stop-opacity') { - opacity = value; - } - } - } - - if (!color) { - color = el.getAttribute('stop-color') || 'rgb(0,0,0)'; - } - if (!opacity) { - opacity = el.getAttribute('stop-opacity'); - } - - color = new fabric.Color(color); - colorAlpha = color.getAlpha(); - opacity = isNaN(parseFloat(opacity)) ? 1 : parseFloat(opacity); - opacity *= colorAlpha * multiplier; - - return { - offset: offset, - color: color.toRgb(), - opacity: opacity - }; - } - - function getLinearCoords(el) { - return { - x1: el.getAttribute('x1') || 0, - y1: el.getAttribute('y1') || 0, - x2: el.getAttribute('x2') || '100%', - y2: el.getAttribute('y2') || 0 - }; - } - - function getRadialCoords(el) { - return { - x1: el.getAttribute('fx') || el.getAttribute('cx') || '50%', - y1: el.getAttribute('fy') || el.getAttribute('cy') || '50%', - r1: 0, - x2: el.getAttribute('cx') || '50%', - y2: el.getAttribute('cy') || '50%', - r2: el.getAttribute('r') || '50%' - }; - } - /* _FROM_SVG_END_ */ - - var clone = fabric.util.object.clone; - - /** - * Gradient class - * @class fabric.Gradient - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#gradients} - * @see {@link fabric.Gradient#initialize} for constructor definition - */ - fabric.Gradient = fabric.util.createClass(/** @lends fabric.Gradient.prototype */ { - - /** - * Horizontal offset for aligning gradients coming from SVG when outside pathgroups - * @type Number - * @default 0 - */ - offsetX: 0, - - /** - * Vertical offset for aligning gradients coming from SVG when outside pathgroups - * @type Number - * @default 0 - */ - offsetY: 0, - - /** - * A transform matrix to apply to the gradient before painting. - * Imported from svg gradients, is not applied with the current transform in the center. - * Before this transform is applied, the origin point is at the top left corner of the object - * plus the addition of offsetY and offsetX. - * @type Number[] - * @default null - */ - gradientTransform: null, - - /** - * coordinates units for coords. - * If `pixels`, the number of coords are in the same unit of width / height. - * If set as `percentage` the coords are still a number, but 1 means 100% of width - * for the X and 100% of the height for the y. It can be bigger than 1 and negative. - * allowed values pixels or percentage. - * @type String - * @default 'pixels' - */ - gradientUnits: 'pixels', - - /** - * Gradient type linear or radial - * @type String - * @default 'pixels' - */ - type: 'linear', - - /** - * Constructor - * @param {Object} options Options object with type, coords, gradientUnits and colorStops - * @param {Object} [options.type] gradient type linear or radial - * @param {Object} [options.gradientUnits] gradient units - * @param {Object} [options.offsetX] SVG import compatibility - * @param {Object} [options.offsetY] SVG import compatibility - * @param {Object[]} options.colorStops contains the colorstops. - * @param {Object} options.coords contains the coords of the gradient - * @param {Number} [options.coords.x1] X coordiante of the first point for linear or of the focal point for radial - * @param {Number} [options.coords.y1] Y coordiante of the first point for linear or of the focal point for radial - * @param {Number} [options.coords.x2] X coordiante of the second point for linear or of the center point for radial - * @param {Number} [options.coords.y2] Y coordiante of the second point for linear or of the center point for radial - * @param {Number} [options.coords.r1] only for radial gradient, radius of the inner circle - * @param {Number} [options.coords.r2] only for radial gradient, radius of the external circle - * @return {fabric.Gradient} thisArg - */ - initialize: function(options) { - options || (options = { }); - options.coords || (options.coords = { }); - - var coords, _this = this; - - // sets everything, then coords and colorstops get sets again - Object.keys(options).forEach(function(option) { - _this[option] = options[option]; - }); - - if (this.id) { - this.id += '_' + fabric.Object.__uid++; - } - else { - this.id = fabric.Object.__uid++; - } - - coords = { - x1: options.coords.x1 || 0, - y1: options.coords.y1 || 0, - x2: options.coords.x2 || 0, - y2: options.coords.y2 || 0 - }; - - if (this.type === 'radial') { - coords.r1 = options.coords.r1 || 0; - coords.r2 = options.coords.r2 || 0; - } - - this.coords = coords; - this.colorStops = options.colorStops.slice(); - }, - - /** - * Adds another colorStop - * @param {Object} colorStop Object with offset and color - * @return {fabric.Gradient} thisArg - */ - addColorStop: function(colorStops) { - for (var position in colorStops) { - var color = new fabric.Color(colorStops[position]); - this.colorStops.push({ - offset: parseFloat(position), - color: color.toRgb(), - opacity: color.getAlpha() - }); - } - return this; - }, - - /** - * Returns object representation of a gradient - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} - */ - toObject: function(propertiesToInclude) { - var object = { - type: this.type, - coords: this.coords, - colorStops: this.colorStops, - offsetX: this.offsetX, - offsetY: this.offsetY, - gradientUnits: this.gradientUnits, - gradientTransform: this.gradientTransform ? this.gradientTransform.concat() : this.gradientTransform - }; - fabric.util.populateWithProperties(this, object, propertiesToInclude); - - return object; - }, - - /* _TO_SVG_START_ */ - /** - * Returns SVG representation of an gradient - * @param {Object} object Object to create a gradient for - * @return {String} SVG representation of an gradient (linear/radial) - */ - toSVG: function(object, options) { - var coords = clone(this.coords, true), i, len, options = options || {}, - markup, commonAttributes, colorStops = clone(this.colorStops, true), - needsSwap = coords.r1 > coords.r2, - transform = this.gradientTransform ? this.gradientTransform.concat() : fabric.iMatrix.concat(), - offsetX = -this.offsetX, offsetY = -this.offsetY, - withViewport = !!options.additionalTransform, - gradientUnits = this.gradientUnits === 'pixels' ? 'userSpaceOnUse' : 'objectBoundingBox'; - // colorStops must be sorted ascending - colorStops.sort(function(a, b) { - return a.offset - b.offset; - }); - - if (gradientUnits === 'objectBoundingBox') { - offsetX /= object.width; - offsetY /= object.height; - } - else { - offsetX += object.width / 2; - offsetY += object.height / 2; - } - if (object.type === 'path' && this.gradientUnits !== 'percentage') { - offsetX -= object.pathOffset.x; - offsetY -= object.pathOffset.y; - } - - - transform[4] -= offsetX; - transform[5] -= offsetY; - - commonAttributes = 'id="SVGID_' + this.id + - '" gradientUnits="' + gradientUnits + '"'; - commonAttributes += ' gradientTransform="' + (withViewport ? - options.additionalTransform + ' ' : '') + fabric.util.matrixToSVG(transform) + '" '; - - if (this.type === 'linear') { - markup = [ - '\n' - ]; - } - else if (this.type === 'radial') { - // svg radial gradient has just 1 radius. the biggest. - markup = [ - '\n' - ]; - } - - if (this.type === 'radial') { - if (needsSwap) { - // svg goes from internal to external radius. if radius are inverted, swap color stops. - colorStops = colorStops.concat(); - colorStops.reverse(); - for (i = 0, len = colorStops.length; i < len; i++) { - colorStops[i].offset = 1 - colorStops[i].offset; - } - } - var minRadius = Math.min(coords.r1, coords.r2); - if (minRadius > 0) { - // i have to shift all colorStops and add new one in 0. - var maxRadius = Math.max(coords.r1, coords.r2), - percentageShift = minRadius / maxRadius; - for (i = 0, len = colorStops.length; i < len; i++) { - colorStops[i].offset += percentageShift * (1 - colorStops[i].offset); - } - } - } - - for (i = 0, len = colorStops.length; i < len; i++) { - var colorStop = colorStops[i]; - markup.push( - '\n' - ); - } - - markup.push((this.type === 'linear' ? '\n' : '\n')); - - return markup.join(''); - }, - /* _TO_SVG_END_ */ - - /** - * Returns an instance of CanvasGradient - * @param {CanvasRenderingContext2D} ctx Context to render on - * @return {CanvasGradient} - */ - toLive: function(ctx) { - var gradient, coords = fabric.util.object.clone(this.coords), i, len; - - if (!this.type) { - return; - } - - if (this.type === 'linear') { - gradient = ctx.createLinearGradient( - coords.x1, coords.y1, coords.x2, coords.y2); - } - else if (this.type === 'radial') { - gradient = ctx.createRadialGradient( - coords.x1, coords.y1, coords.r1, coords.x2, coords.y2, coords.r2); - } - - for (i = 0, len = this.colorStops.length; i < len; i++) { - var color = this.colorStops[i].color, - opacity = this.colorStops[i].opacity, - offset = this.colorStops[i].offset; - - if (typeof opacity !== 'undefined') { - color = new fabric.Color(color).setAlpha(opacity).toRgba(); - } - gradient.addColorStop(offset, color); - } - - return gradient; - } - }); - - fabric.util.object.extend(fabric.Gradient, { - - /* _FROM_SVG_START_ */ - /** - * Returns {@link fabric.Gradient} instance from an SVG element - * @static - * @memberOf fabric.Gradient - * @param {SVGGradientElement} el SVG gradient element - * @param {fabric.Object} instance - * @param {String} opacityAttr A fill-opacity or stroke-opacity attribute to multiply to each stop's opacity. - * @param {Object} svgOptions an object containing the size of the SVG in order to parse correctly gradients - * that uses gradientUnits as 'userSpaceOnUse' and percentages. - * @param {Object.number} viewBoxWidth width part of the viewBox attribute on svg - * @param {Object.number} viewBoxHeight height part of the viewBox attribute on svg - * @param {Object.number} width width part of the svg tag if viewBox is not specified - * @param {Object.number} height height part of the svg tag if viewBox is not specified - * @return {fabric.Gradient} Gradient instance - * @see http://www.w3.org/TR/SVG/pservers.html#LinearGradientElement - * @see http://www.w3.org/TR/SVG/pservers.html#RadialGradientElement - */ - fromElement: function(el, instance, opacityAttr, svgOptions) { - /** - * @example: - * - * - * - * - * - * - * OR - * - * - * - * - * - * - * OR - * - * - * - * - * - * - * - * OR - * - * - * - * - * - * - * - */ - - var multiplier = parseFloat(opacityAttr) / (/%$/.test(opacityAttr) ? 100 : 1); - multiplier = multiplier < 0 ? 0 : multiplier > 1 ? 1 : multiplier; - if (isNaN(multiplier)) { - multiplier = 1; - } - - var colorStopEls = el.getElementsByTagName('stop'), - type, - gradientUnits = el.getAttribute('gradientUnits') === 'userSpaceOnUse' ? - 'pixels' : 'percentage', - gradientTransform = el.getAttribute('gradientTransform') || '', - colorStops = [], - coords, i, offsetX = 0, offsetY = 0, - transformMatrix; - if (el.nodeName === 'linearGradient' || el.nodeName === 'LINEARGRADIENT') { - type = 'linear'; - coords = getLinearCoords(el); - } - else { - type = 'radial'; - coords = getRadialCoords(el); - } - - for (i = colorStopEls.length; i--; ) { - colorStops.push(getColorStop(colorStopEls[i], multiplier)); - } - - transformMatrix = fabric.parseTransformAttribute(gradientTransform); - - __convertPercentUnitsToValues(instance, coords, svgOptions, gradientUnits); - - if (gradientUnits === 'pixels') { - offsetX = -instance.left; - offsetY = -instance.top; - } - - var gradient = new fabric.Gradient({ - id: el.getAttribute('id'), - type: type, - coords: coords, - colorStops: colorStops, - gradientUnits: gradientUnits, - gradientTransform: transformMatrix, - offsetX: offsetX, - offsetY: offsetY, - }); - - return gradient; - } - /* _FROM_SVG_END_ */ - }); - - /** - * @private - */ - function __convertPercentUnitsToValues(instance, options, svgOptions, gradientUnits) { - var propValue, finalValue; - Object.keys(options).forEach(function(prop) { - propValue = options[prop]; - if (propValue === 'Infinity') { - finalValue = 1; - } - else if (propValue === '-Infinity') { - finalValue = 0; - } - else { - finalValue = parseFloat(options[prop], 10); - if (typeof propValue === 'string' && /^(\d+\.\d+)%|(\d+)%$/.test(propValue)) { - finalValue *= 0.01; - if (gradientUnits === 'pixels') { - // then we need to fix those percentages here in svg parsing - if (prop === 'x1' || prop === 'x2' || prop === 'r2') { - finalValue *= svgOptions.viewBoxWidth || svgOptions.width; - } - if (prop === 'y1' || prop === 'y2') { - finalValue *= svgOptions.viewBoxHeight || svgOptions.height; - } - } - } - } - options[prop] = finalValue; }); - } -})(); - - -(function() { - - 'use strict'; - - var toFixed = fabric.util.toFixed; - - /** - * Pattern class - * @class fabric.Pattern - * @see {@link http://fabricjs.com/patterns|Pattern demo} - * @see {@link http://fabricjs.com/dynamic-patterns|DynamicPattern demo} - * @see {@link fabric.Pattern#initialize} for constructor definition - */ - - - fabric.Pattern = fabric.util.createClass(/** @lends fabric.Pattern.prototype */ { - - /** - * Repeat property of a pattern (one of repeat, repeat-x, repeat-y or no-repeat) - * @type String - * @default - */ - repeat: 'repeat', - - /** - * Pattern horizontal offset from object's left/top corner - * @type Number - * @default - */ - offsetX: 0, - - /** - * Pattern vertical offset from object's left/top corner - * @type Number - * @default - */ - offsetY: 0, - - /** - * crossOrigin value (one of "", "anonymous", "use-credentials") - * @see https://developer.mozilla.org/en-US/docs/HTML/CORS_settings_attributes - * @type String - * @default - */ - crossOrigin: '', - - /** - * transform matrix to change the pattern, imported from svgs. - * @type Array - * @default - */ - patternTransform: null, - - /** - * Constructor - * @param {Object} [options] Options object - * @param {Function} [callback] function to invoke after callback init. - * @return {fabric.Pattern} thisArg - */ - initialize: function(options, callback) { - options || (options = { }); - - this.id = fabric.Object.__uid++; - this.setOptions(options); - if (!options.source || (options.source && typeof options.source !== 'string')) { - callback && callback(this); - return; - } - else { - // img src string - var _this = this; - this.source = fabric.util.createImage(); - fabric.util.loadImage(options.source, function(img, isError) { - _this.source = img; - callback && callback(_this, isError); - }, null, this.crossOrigin); - } - }, +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric, min = Math.min, max = Math.max; + fabric.util.object.extend(fabric.Canvas.prototype, + /** @lends fabric.Canvas.prototype */ { + /** + * @private + * @param {Event} e Event object + * @param {fabric.Object} target + * @return {Boolean} + */ + _shouldGroup: function (e, target) { + var activeObject = this._activeObject; + // check if an active object exists on canvas and if the user is pressing the `selectionKey` while canvas supports multi selection. + return (!!activeObject && + this._isSelectionKeyPressed(e) && + this.selection && + // on top of that the user also has to hit a target that is selectable. + !!target && + target.selectable && + // if all pre-requisite pass, the target is either something different from the current + // activeObject or if an activeSelection already exists + // TODO at time of writing why `activeObject.type === 'activeSelection'` matter is unclear. + // is a very old condition uncertain if still valid. + (activeObject !== target || + activeObject.type === 'activeSelection') && + // make sure `activeObject` and `target` aren't ancestors of each other + !target.isDescendantOf(activeObject) && + !activeObject.isDescendantOf(target) && + // target accepts selection + !target.onSelect({ e: e })); + }, + /** + * @private + * @param {Event} e Event object + * @param {fabric.Object} target + */ + _handleGrouping: function (e, target) { + var activeObject = this._activeObject; + // avoid multi select when shift click on a corner + if (activeObject.__corner) { + return; + } + if (target === activeObject) { + // if it's a group, find target again, using activeGroup objects + target = this.findTarget(e, true); + // if even object is not found or we are on activeObjectCorner, bail out + if (!target || !target.selectable) { + return; + } + } + if (activeObject && activeObject.type === 'activeSelection') { + this._updateActiveSelection(target, e); + } + else { + this._createActiveSelection(target, e); + } + }, + /** + * @private + */ + _updateActiveSelection: function (target, e) { + var activeSelection = this._activeObject, currentActiveObjects = activeSelection._objects.slice(0); + if (target.group === activeSelection) { + activeSelection.remove(target); + this._hoveredTarget = target; + this._hoveredTargets = this.targets.concat(); + if (activeSelection.size() === 1) { + // activate last remaining object + this._setActiveObject(activeSelection.item(0), e); + } + } + else { + activeSelection.add(target); + this._hoveredTarget = activeSelection; + this._hoveredTargets = this.targets.concat(); + } + this._fireSelectionEvents(currentActiveObjects, e); + }, + /** + * @private + */ + _createActiveSelection: function (target, e) { + var currentActives = this.getActiveObjects(), group = this._createGroup(target); + this._hoveredTarget = group; + // ISSUE 4115: should we consider subTargets here? + // this._hoveredTargets = []; + // this._hoveredTargets = this.targets.concat(); + this._setActiveObject(group, e); + this._fireSelectionEvents(currentActives, e); + }, + /** + * @private + * @param {Object} target + * @returns {fabric.ActiveSelection} + */ + _createGroup: function (target) { + var activeObject = this._activeObject; + var groupObjects = target.isInFrontOf(activeObject) + ? [activeObject, target] + : [target, activeObject]; + activeObject.isEditing && activeObject.exitEditing(); + // handle case: target is nested + return new fabric.ActiveSelection(groupObjects, { + canvas: this, + }); + }, + /** + * @private + * @param {Event} e mouse event + */ + _groupSelectedObjects: function (e) { + var group = this._collectObjects(e), aGroup; + // do not create group for 1 element only + if (group.length === 1) { + this.setActiveObject(group[0], e); + } + else if (group.length > 1) { + aGroup = new fabric.ActiveSelection(group.reverse(), { + canvas: this, + }); + this.setActiveObject(aGroup, e); + } + }, + /** + * @private + */ + _collectObjects: function (e) { + var group = [], currentObject, x1 = this._groupSelector.ex, y1 = this._groupSelector.ey, x2 = x1 + this._groupSelector.left, y2 = y1 + this._groupSelector.top, selectionX1Y1 = new Point(min(x1, x2), min(y1, y2)), selectionX2Y2 = new Point(max(x1, x2), max(y1, y2)), allowIntersect = !this.selectionFullyContained, isClick = x1 === x2 && y1 === y2; + // we iterate reverse order to collect top first in case of click. + for (var i = this._objects.length; i--;) { + currentObject = this._objects[i]; + if (!currentObject || + !currentObject.selectable || + !currentObject.visible) { + continue; + } + if ((allowIntersect && + currentObject.intersectsWithRect(selectionX1Y1, selectionX2Y2, true)) || + currentObject.isContainedWithinRect(selectionX1Y1, selectionX2Y2, true) || + (allowIntersect && + currentObject.containsPoint(selectionX1Y1, null, true)) || + (allowIntersect && + currentObject.containsPoint(selectionX2Y2, null, true))) { + group.push(currentObject); + // only add one object if it's a click + if (isClick) { + break; + } + } + } + if (group.length > 1) { + group = group.filter(function (object) { + return !object.onSelect({ e: e }); + }); + } + return group; + }, + /** + * @private + */ + _maybeGroupObjects: function (e) { + if (this.selection && this._groupSelector) { + this._groupSelectedObjects(e); + } + this.setCursor(this.defaultCursor); + // clear selection and current transformation + this._groupSelector = null; + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.StaticCanvas.prototype, + /** @lends fabric.StaticCanvas.prototype */ { + /** + * Exports canvas element to a dataurl image. Note that when multiplier is used, cropping is scaled appropriately + * @param {Object} [options] Options object + * @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png" + * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg. + * @param {Number} [options.multiplier=1] Multiplier to scale by, to have consistent + * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 + * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 + * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 + * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 + * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 2.0.0 + * @param {(object: fabric.Object) => boolean} [options.filter] Function to filter objects. + * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format + * @see {@link https://jsfiddle.net/xsjua1rd/ demo} + * @example Generate jpeg dataURL with lower quality + * var dataURL = canvas.toDataURL({ + * format: 'jpeg', + * quality: 0.8 + * }); + * @example Generate cropped png dataURL (clipping of canvas) + * var dataURL = canvas.toDataURL({ + * format: 'png', + * left: 100, + * top: 100, + * width: 200, + * height: 200 + * }); + * @example Generate double scaled png dataURL + * var dataURL = canvas.toDataURL({ + * format: 'png', + * multiplier: 2 + * }); + * @example Generate dataURL with objects that overlap a specified object + * var myObject; + * var dataURL = canvas.toDataURL({ + * filter: (object) => object.isContainedWithinObject(myObject) || object.intersectsWithObject(myObject) + * }); + */ + toDataURL: function (options) { + options || (options = {}); + var format = options.format || 'png', quality = options.quality || 1, multiplier = (options.multiplier || 1) * + (options.enableRetinaScaling ? this.getRetinaScaling() : 1), canvasEl = this.toCanvasElement(multiplier, options); + return fabric.util.toDataURL(canvasEl, format, quality); + }, + /** + * Create a new HTMLCanvas element painted with the current canvas content. + * No need to resize the actual one or repaint it. + * Will transfer object ownership to a new canvas, paint it, and set everything back. + * This is an intermediary step used to get to a dataUrl but also it is useful to + * create quick image copies of a canvas without passing for the dataUrl string + * @param {Number} [multiplier] a zoom factor. + * @param {Object} [options] Cropping informations + * @param {Number} [options.left] Cropping left offset. + * @param {Number} [options.top] Cropping top offset. + * @param {Number} [options.width] Cropping width. + * @param {Number} [options.height] Cropping height. + * @param {(object: fabric.Object) => boolean} [options.filter] Function to filter objects. + */ + toCanvasElement: function (multiplier, options) { + multiplier = multiplier || 1; + options = options || {}; + var scaledWidth = (options.width || this.width) * multiplier, scaledHeight = (options.height || this.height) * multiplier, zoom = this.getZoom(), originalWidth = this.width, originalHeight = this.height, newZoom = zoom * multiplier, vp = this.viewportTransform, translateX = (vp[4] - (options.left || 0)) * multiplier, translateY = (vp[5] - (options.top || 0)) * multiplier, originalInteractive = this.interactive, newVp = [newZoom, 0, 0, newZoom, translateX, translateY], originalRetina = this.enableRetinaScaling, canvasEl = fabric.util.createCanvasElement(), originalContextTop = this.contextTop, objectsToRender = options.filter + ? this._objects.filter(options.filter) + : this._objects; + canvasEl.width = scaledWidth; + canvasEl.height = scaledHeight; + this.contextTop = null; + this.enableRetinaScaling = false; + this.interactive = false; + this.viewportTransform = newVp; + this.width = scaledWidth; + this.height = scaledHeight; + this.calcViewportBoundaries(); + this.renderCanvas(canvasEl.getContext('2d'), objectsToRender); + this.viewportTransform = vp; + this.width = originalWidth; + this.height = originalHeight; + this.calcViewportBoundaries(); + this.interactive = originalInteractive; + this.enableRetinaScaling = originalRetina; + this.contextTop = originalContextTop; + return canvasEl; + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.StaticCanvas.prototype, + /** @lends fabric.StaticCanvas.prototype */ { + /** + * Populates canvas with data from the specified JSON. + * JSON format must conform to the one of {@link fabric.Canvas#toJSON} + * + * **IMPORTANT**: It is recommended to abort loading tasks before calling this method to prevent race conditions and unnecessary networking + * + * @param {String|Object} json JSON string or object + * @param {Function} [reviver] Method for further parsing of JSON elements, called after each fabric object created. + * @param {Object} [options] options + * @param {AbortSignal} [options.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @return {Promise} instance + * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#deserialization} + * @see {@link http://jsfiddle.net/fabricjs/fmgXt/|jsFiddle demo} + * @example loadFromJSON + * canvas.loadFromJSON(json).then((canvas) => canvas.requestRenderAll()); + * @example loadFromJSON with reviver + * canvas.loadFromJSON(json, function(o, object) { + * // `o` = json object + * // `object` = fabric.Object instance + * // ... do some stuff ... + * }).then((canvas) => { + * ... canvas is restored, add your code. + * }); + * + */ + loadFromJSON: function (json, reviver, options) { + if (!json) { + return Promise.reject(new Error('fabric.js: `json` is undefined')); + } + // serialize if it wasn't already + var serialized = typeof json === 'string' ? JSON.parse(json) : Object.assign({}, json); + var _this = this, renderOnAddRemove = this.renderOnAddRemove; + this.renderOnAddRemove = false; + return Promise.all([ + fabric.util.enlivenObjects(serialized.objects || [], { + reviver: reviver, + signal: options && options.signal, + }), + fabric.util.enlivenObjectEnlivables({ + backgroundImage: serialized.backgroundImage, + backgroundColor: serialized.background, + overlayImage: serialized.overlayImage, + overlayColor: serialized.overlay, + clipPath: serialized.clipPath, + }, { signal: options && options.signal }), + ]).then(function (res) { + var enlived = res[0], enlivedMap = res[1]; + _this.clear(); + _this.__setupCanvas(serialized, enlived); + _this.renderOnAddRemove = renderOnAddRemove; + _this.set(enlivedMap); + return _this; + }); + }, + /** + * @private + * @param {Object} serialized Object with background and overlay information + * @param {Array} enlivenedObjects canvas objects + */ + __setupCanvas: function (serialized, enlivenedObjects) { + var _this = this; + enlivenedObjects.forEach(function (obj, index) { + // we splice the array just in case some custom classes restored from JSON + // will add more object to canvas at canvas init. + _this.insertAt(obj, index); + }); + // remove parts i cannot set as options + delete serialized.objects; + delete serialized.backgroundImage; + delete serialized.overlayImage; + delete serialized.background; + delete serialized.overlay; + // this._initOptions does too many things to just + // call it. Normally loading an Object from JSON + // create the Object instance. Here the Canvas is + // already an instance and we are just loading things over it + this._setOptions(serialized); + }, + /** + * Clones canvas instance + * @param {Array} [properties] Array of properties to include in the cloned canvas and children + * @returns {Promise} + */ + clone: function (properties) { + var data = JSON.stringify(this.toJSON(properties)); + return this.cloneWithoutData().then(function (clone) { + return clone.loadFromJSON(data); + }); + }, + /** + * Clones canvas instance without cloning existing data. + * This essentially copies canvas dimensions, clipping properties, etc. + * but leaves data empty (so that you can populate it with your own) + * @returns {Promise} + */ + cloneWithoutData: function () { + var el = fabric.util.createCanvasElement(); + el.width = this.width; + el.height = this.height; + // this seems wrong. either Canvas or StaticCanvas + var clone = new fabric.Canvas(el); + var data = {}; + if (this.backgroundImage) { + data.backgroundImage = this.backgroundImage.toObject(); + } + if (this.backgroundColor) { + data.background = this.backgroundColor.toObject + ? this.backgroundColor.toObject() + : this.backgroundColor; + } + return clone.loadFromJSON(data); + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric, degreesToRadians = fabric.util.degreesToRadians, radiansToDegrees = fabric.util.radiansToDegrees; + /** + * Adds support for multi-touch gestures using the Event.js library. + * Fires the following custom events: + * - touch:gesture + * - touch:drag + * - touch:orientation + * - touch:shake + * - touch:longpress + */ + fabric.util.object.extend(fabric.Canvas.prototype, + /** @lends fabric.Canvas.prototype */ { + /** + * Method that defines actions when an Event.js gesture is detected on an object. Currently only supports + * 2 finger gestures. + * @param {Event} e Event object by Event.js + * @param {Event} self Event proxy object by Event.js + */ + __onTransformGesture: function (e, self) { + if (this.isDrawingMode || + !e.touches || + e.touches.length !== 2 || + 'gesture' !== self.gesture) { + return; + } + var target = this.findTarget(e); + if ('undefined' !== typeof target) { + this.__gesturesParams = { + e: e, + self: self, + target: target, + }; + this.__gesturesRenderer(); + } + this.fire('touch:gesture', { + target: target, + e: e, + self: self, + }); + }, + __gesturesParams: null, + __gesturesRenderer: function () { + if (this.__gesturesParams === null || this._currentTransform === null) { + return; + } + var self = this.__gesturesParams.self, t = this._currentTransform, e = this.__gesturesParams.e; + t.action = 'scale'; + t.originX = t.originY = 'center'; + this._scaleObjectBy(self.scale, e); + if (self.rotation !== 0) { + t.action = 'rotate'; + this._rotateObjectByAngle(self.rotation, e); + } + this.requestRenderAll(); + t.action = 'drag'; + }, + /** + * Method that defines actions when an Event.js drag is detected. + * + * @param {Event} e Event object by Event.js + * @param {Event} self Event proxy object by Event.js + */ + __onDrag: function (e, self) { + this.fire('touch:drag', { + e: e, + self: self, + }); + }, + /** + * Method that defines actions when an Event.js orientation event is detected. + * + * @param {Event} e Event object by Event.js + * @param {Event} self Event proxy object by Event.js + */ + __onOrientationChange: function (e, self) { + this.fire('touch:orientation', { + e: e, + self: self, + }); + }, + /** + * Method that defines actions when an Event.js shake event is detected. + * + * @param {Event} e Event object by Event.js + * @param {Event} self Event proxy object by Event.js + */ + __onShake: function (e, self) { + this.fire('touch:shake', { + e: e, + self: self, + }); + }, + /** + * Method that defines actions when an Event.js longpress event is detected. + * + * @param {Event} e Event object by Event.js + * @param {Event} self Event proxy object by Event.js + */ + __onLongPress: function (e, self) { + this.fire('touch:longpress', { + e: e, + self: self, + }); + }, + /** + * Scales an object by a factor + * @param {Number} s The scale factor to apply to the current scale level + * @param {Event} e Event object by Event.js + */ + _scaleObjectBy: function (s, e) { + var t = this._currentTransform, target = t.target; + t.gestureScale = s; + target._scaling = true; + return fabric.controlsUtils.scalingEqually(e, t, 0, 0); + }, + /** + * Rotates object by an angle + * @param {Number} curAngle The angle of rotation in degrees + * @param {Event} e Event object by Event.js + */ + _rotateObjectByAngle: function (curAngle, e) { + var t = this._currentTransform; + if (t.target.get('lockRotation')) { + return; + } + t.target.rotate(radiansToDegrees(degreesToRadians(curAngle) + t.theta)); + this._fire('rotating', { + target: t.target, + e: e, + transform: t, + }); + }, + }); +})(typeof exports !== 'undefined' ? exports : window); +(function (global) { + var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, clone = fabric.util.object.clone, toFixed = fabric.util.toFixed, capitalize = fabric.util.string.capitalize, degreesToRadians = fabric.util.degreesToRadians, objectCaching = !fabric.isLikelyNode, ALIASING_LIMIT = 2; /** - * Returns object representation of a pattern - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of a pattern instance - */ - toObject: function(propertiesToInclude) { - var NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS, - source, object; - - // element - if (typeof this.source.src === 'string') { - source = this.source.src; - } - // element - else if (typeof this.source === 'object' && this.source.toDataURL) { - source = this.source.toDataURL(); - } - - object = { - type: 'pattern', - source: source, - repeat: this.repeat, - crossOrigin: this.crossOrigin, - offsetX: toFixed(this.offsetX, NUM_FRACTION_DIGITS), - offsetY: toFixed(this.offsetY, NUM_FRACTION_DIGITS), - patternTransform: this.patternTransform ? this.patternTransform.concat() : null - }; - fabric.util.populateWithProperties(this, object, propertiesToInclude); - - return object; - }, - - /* _TO_SVG_START_ */ - /** - * Returns SVG representation of a pattern - * @param {fabric.Object} object - * @return {String} SVG representation of a pattern - */ - toSVG: function(object) { - var patternSource = typeof this.source === 'function' ? this.source() : this.source, - patternWidth = patternSource.width / object.width, - patternHeight = patternSource.height / object.height, - patternOffsetX = this.offsetX / object.width, - patternOffsetY = this.offsetY / object.height, - patternImgSrc = ''; - if (this.repeat === 'repeat-x' || this.repeat === 'no-repeat') { - patternHeight = 1; - if (patternOffsetY) { - patternHeight += Math.abs(patternOffsetY); - } - } - if (this.repeat === 'repeat-y' || this.repeat === 'no-repeat') { - patternWidth = 1; - if (patternOffsetX) { - patternWidth += Math.abs(patternOffsetX); - } - - } - if (patternSource.src) { - patternImgSrc = patternSource.src; - } - else if (patternSource.toDataURL) { - patternImgSrc = patternSource.toDataURL(); - } - - return '\n' + - '\n' + - '\n'; - }, - /* _TO_SVG_END_ */ - - setOptions: function(options) { - for (var prop in options) { - this[prop] = options[prop]; - } - }, - - /** - * Returns an instance of CanvasPattern - * @param {CanvasRenderingContext2D} ctx Context to create pattern - * @return {CanvasPattern} - */ - toLive: function(ctx) { - var source = this.source; - // if the image failed to load, return, and allow rest to continue loading - if (!source) { - return ''; - } - - // if an image - if (typeof source.src !== 'undefined') { - if (!source.complete) { - return ''; - } - if (source.naturalWidth === 0 || source.naturalHeight === 0) { - return ''; - } - } - return ctx.createPattern(source, this.repeat); - } - }); -})(); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - toFixed = fabric.util.toFixed; - - if (fabric.Shadow) { - fabric.warn('fabric.Shadow is already defined.'); - return; - } - - /** - * Shadow class - * @class fabric.Shadow - * @see {@link http://fabricjs.com/shadows|Shadow demo} - * @see {@link fabric.Shadow#initialize} for constructor definition - */ - fabric.Shadow = fabric.util.createClass(/** @lends fabric.Shadow.prototype */ { - - /** - * Shadow color - * @type String - * @default - */ - color: 'rgb(0,0,0)', - + * Root object class from which all 2d shape classes inherit from + * @class fabric.Object + * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#objects} + * @see {@link fabric.Object#initialize} for constructor definition + * + * @fires added + * @fires removed + * + * @fires selected + * @fires deselected + * @fires modified + * @fires modified + * @fires moved + * @fires scaled + * @fires rotated + * @fires skewed + * + * @fires rotating + * @fires scaling + * @fires moving + * @fires skewing + * + * @fires mousedown + * @fires mouseup + * @fires mouseover + * @fires mouseout + * @fires mousewheel + * @fires mousedblclick + * + * @fires dragover + * @fires dragenter + * @fires dragleave + * @fires drop + */ + fabric.Object = fabric.util.createClass(fabric.CommonMethods, + /** @lends fabric.Object.prototype */ { + /** + * Type of an object (rect, circle, path, etc.). + * Note that this property is meant to be read-only and not meant to be modified. + * If you modify, certain parts of Fabric (such as JSON loading) won't work correctly. + * @type String + * @default + */ + type: 'object', + /** + * Horizontal origin of transformation of an object (one of "left", "right", "center") + * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups + * @type String + * @default + */ + originX: 'left', + /** + * Vertical origin of transformation of an object (one of "top", "bottom", "center") + * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups + * @type String + * @default + */ + originY: 'top', + /** + * Top position of an object. Note that by default it's relative to object top. You can change this by setting originY={top/center/bottom} + * @type Number + * @default + */ + top: 0, + /** + * Left position of an object. Note that by default it's relative to object left. You can change this by setting originX={left/center/right} + * @type Number + * @default + */ + left: 0, + /** + * Object width + * @type Number + * @default + */ + width: 0, + /** + * Object height + * @type Number + * @default + */ + height: 0, + /** + * Object scale factor (horizontal) + * @type Number + * @default + */ + scaleX: 1, + /** + * Object scale factor (vertical) + * @type Number + * @default + */ + scaleY: 1, + /** + * When true, an object is rendered as flipped horizontally + * @type Boolean + * @default + */ + flipX: false, + /** + * When true, an object is rendered as flipped vertically + * @type Boolean + * @default + */ + flipY: false, + /** + * Opacity of an object + * @type Number + * @default + */ + opacity: 1, + /** + * Angle of rotation of an object (in degrees) + * @type Number + * @default + */ + angle: 0, + /** + * Angle of skew on x axes of an object (in degrees) + * @type Number + * @default + */ + skewX: 0, + /** + * Angle of skew on y axes of an object (in degrees) + * @type Number + * @default + */ + skewY: 0, + /** + * Size of object's controlling corners (in pixels) + * @type Number + * @default + */ + cornerSize: 13, + /** + * Size of object's controlling corners when touch interaction is detected + * @type Number + * @default + */ + touchCornerSize: 24, + /** + * When true, object's controlling corners are rendered as transparent inside (i.e. stroke instead of fill) + * @type Boolean + * @default + */ + transparentCorners: true, + /** + * Default cursor value used when hovering over this object on canvas + * @type String + * @default + */ + hoverCursor: null, + /** + * Default cursor value used when moving this object on canvas + * @type String + * @default + */ + moveCursor: null, + /** + * Padding between object and its controlling borders (in pixels) + * @type Number + * @default + */ + padding: 0, + /** + * Color of controlling borders of an object (when it's active) + * @type String + * @default + */ + borderColor: 'rgb(178,204,255)', + /** + * Array specifying dash pattern of an object's borders (hasBorder must be true) + * @since 1.6.2 + * @type Array + */ + borderDashArray: null, + /** + * Color of controlling corners of an object (when it's active) + * @type String + * @default + */ + cornerColor: 'rgb(178,204,255)', + /** + * Color of controlling corners of an object (when it's active and transparentCorners false) + * @since 1.6.2 + * @type String + * @default + */ + cornerStrokeColor: null, + /** + * Specify style of control, 'rect' or 'circle' + * @since 1.6.2 + * @type String + */ + cornerStyle: 'rect', + /** + * Array specifying dash pattern of an object's control (hasBorder must be true) + * @since 1.6.2 + * @type Array + */ + cornerDashArray: null, + /** + * When true, this object will use center point as the origin of transformation + * when being scaled via the controls. + * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). + * @since 1.3.4 + * @type Boolean + * @default + */ + centeredScaling: false, + /** + * When true, this object will use center point as the origin of transformation + * when being rotated via the controls. + * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). + * @since 1.3.4 + * @type Boolean + * @default + */ + centeredRotation: true, + /** + * Color of object's fill + * takes css colors https://www.w3.org/TR/css-color-3/ + * @type String + * @default + */ + fill: 'rgb(0,0,0)', + /** + * Fill rule used to fill an object + * accepted values are nonzero, evenodd + * Backwards incompatibility note: This property was used for setting globalCompositeOperation until v1.4.12 (use `fabric.Object#globalCompositeOperation` instead) + * @type String + * @default + */ + fillRule: 'nonzero', + /** + * Composite rule used for canvas globalCompositeOperation + * @type String + * @default + */ + globalCompositeOperation: 'source-over', + /** + * Background color of an object. + * takes css colors https://www.w3.org/TR/css-color-3/ + * @type String + * @default + */ + backgroundColor: '', + /** + * Selection Background color of an object. colored layer behind the object when it is active. + * does not mix good with globalCompositeOperation methods. + * @type String + * @default + */ + selectionBackgroundColor: '', + /** + * When defined, an object is rendered via stroke and this property specifies its color + * takes css colors https://www.w3.org/TR/css-color-3/ + * @type String + * @default + */ + stroke: null, + /** + * Width of a stroke used to render this object + * @type Number + * @default + */ + strokeWidth: 1, + /** + * Array specifying dash pattern of an object's stroke (stroke must be defined) + * @type Array + */ + strokeDashArray: null, + /** + * Line offset of an object's stroke + * @type Number + * @default + */ + strokeDashOffset: 0, + /** + * Line endings style of an object's stroke (one of "butt", "round", "square") + * @type String + * @default + */ + strokeLineCap: 'butt', + /** + * Corner style of an object's stroke (one of "bevel", "round", "miter") + * @type String + * @default + */ + strokeLineJoin: 'miter', + /** + * Maximum miter length (used for strokeLineJoin = "miter") of an object's stroke + * @type Number + * @default + */ + strokeMiterLimit: 4, + /** + * Shadow object representing shadow of this shape + * @type fabric.Shadow + * @default + */ + shadow: null, + /** + * Opacity of object's controlling borders when object is active and moving + * @type Number + * @default + */ + borderOpacityWhenMoving: 0.4, + /** + * Scale factor of object's controlling borders + * bigger number will make a thicker border + * border is 1, so this is basically a border thickness + * since there is no way to change the border itself. + * @type Number + * @default + */ + borderScaleFactor: 1, + /** + * Minimum allowed scale value of an object + * @type Number + * @default + */ + minScaleLimit: 0, + /** + * When set to `false`, an object can not be selected for modification (using either point-click-based or group-based selection). + * But events still fire on it. + * @type Boolean + * @default + */ + selectable: true, + /** + * When set to `false`, an object can not be a target of events. All events propagate through it. Introduced in v1.3.4 + * @type Boolean + * @default + */ + evented: true, + /** + * When set to `false`, an object is not rendered on canvas + * @type Boolean + * @default + */ + visible: true, + /** + * When set to `false`, object's controls are not displayed and can not be used to manipulate object + * @type Boolean + * @default + */ + hasControls: true, + /** + * When set to `false`, object's controlling borders are not rendered + * @type Boolean + * @default + */ + hasBorders: true, + /** + * When set to `true`, objects are "found" on canvas on per-pixel basis rather than according to bounding box + * @type Boolean + * @default + */ + perPixelTargetFind: false, + /** + * When `false`, default object's values are not included in its serialization + * @type Boolean + * @default + */ + includeDefaultValues: true, + /** + * When `true`, object horizontal movement is locked + * @type Boolean + * @default + */ + lockMovementX: false, + /** + * When `true`, object vertical movement is locked + * @type Boolean + * @default + */ + lockMovementY: false, + /** + * When `true`, object rotation is locked + * @type Boolean + * @default + */ + lockRotation: false, + /** + * When `true`, object horizontal scaling is locked + * @type Boolean + * @default + */ + lockScalingX: false, + /** + * When `true`, object vertical scaling is locked + * @type Boolean + * @default + */ + lockScalingY: false, + /** + * When `true`, object horizontal skewing is locked + * @type Boolean + * @default + */ + lockSkewingX: false, + /** + * When `true`, object vertical skewing is locked + * @type Boolean + * @default + */ + lockSkewingY: false, + /** + * When `true`, object cannot be flipped by scaling into negative values + * @type Boolean + * @default + */ + lockScalingFlip: false, + /** + * When `true`, object is not exported in OBJECT/JSON + * @since 1.6.3 + * @type Boolean + * @default + */ + excludeFromExport: false, + /** + * When `true`, object is cached on an additional canvas. + * When `false`, object is not cached unless necessary ( clipPath ) + * default to true + * @since 1.7.0 + * @type Boolean + * @default true + */ + objectCaching: objectCaching, + /** + * When `true`, object properties are checked for cache invalidation. In some particular + * situation you may want this to be disabled ( spray brush, very big, groups) + * or if your application does not allow you to modify properties for groups child you want + * to disable it for groups. + * default to false + * since 1.7.0 + * @type Boolean + * @default false + */ + statefullCache: false, + /** + * When `true`, cache does not get updated during scaling. The picture will get blocky if scaled + * too much and will be redrawn with correct details at the end of scaling. + * this setting is performance and application dependant. + * default to true + * since 1.7.0 + * @type Boolean + * @default true + */ + noScaleCache: true, + /** + * When `false`, the stoke width will scale with the object. + * When `true`, the stroke will always match the exact pixel size entered for stroke width. + * this Property does not work on Text classes or drawing call that uses strokeText,fillText methods + * default to false + * @since 2.6.0 + * @type Boolean + * @default false + * @type Boolean + * @default false + */ + strokeUniform: false, + /** + * When set to `true`, object's cache will be rerendered next render call. + * since 1.7.0 + * @type Boolean + * @default true + */ + dirty: true, + /** + * keeps the value of the last hovered corner during mouse move. + * 0 is no corner, or 'mt', 'ml', 'mtr' etc.. + * It should be private, but there is no harm in using it as + * a read-only property. + * @type number|string|any + * @default 0 + */ + __corner: 0, + /** + * Determines if the fill or the stroke is drawn first (one of "fill" or "stroke") + * @type String + * @default + */ + paintFirst: 'fill', + /** + * When 'down', object is set to active on mousedown/touchstart + * When 'up', object is set to active on mouseup/touchend + * Experimental. Let's see if this breaks anything before supporting officially + * @private + * since 4.4.0 + * @type String + * @default 'down' + */ + activeOn: 'down', + /** + * List of properties to consider when checking if state + * of an object is changed (fabric.Object#hasStateChanged) + * as well as for history (undo/redo) purposes + * @type Array + */ + stateProperties: ('top left width height scaleX scaleY flipX flipY originX originY transformMatrix ' + + 'stroke strokeWidth strokeDashArray strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit ' + + 'angle opacity fill globalCompositeOperation shadow visible backgroundColor ' + + 'skewX skewY fillRule paintFirst clipPath strokeUniform').split(' '), + /** + * List of properties to consider when checking if cache needs refresh + * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single + * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty + * and refreshed at the next render + * @type Array + */ + cacheProperties: ('fill stroke strokeWidth strokeDashArray width height paintFirst strokeUniform' + + ' strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit backgroundColor clipPath').split(' '), + /** + * List of properties to consider for animating colors. + * @type Array + */ + colorProperties: 'fill stroke backgroundColor'.split(' '), + /** + * a fabricObject that, without stroke define a clipping area with their shape. filled in black + * the clipPath object gets used when the object has rendered, and the context is placed in the center + * of the object cacheCanvas. + * If you want 0,0 of a clipPath to align with an object center, use clipPath.originX/Y to 'center' + * @type fabric.Object + */ + clipPath: undefined, + /** + * Meaningful ONLY when the object is used as clipPath. + * if true, the clipPath will make the object clip to the outside of the clipPath + * since 2.4.0 + * @type boolean + * @default false + */ + inverted: false, + /** + * Meaningful ONLY when the object is used as clipPath. + * if true, the clipPath will have its top and left relative to canvas, and will + * not be influenced by the object transform. This will make the clipPath relative + * to the canvas, but clipping just a particular object. + * WARNING this is beta, this feature may change or be renamed. + * since 2.4.0 + * @type boolean + * @default false + */ + absolutePositioned: false, + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function (options) { + if (options) { + this.setOptions(options); + } + }, + /** + * Create a the canvas used to keep the cached copy of the object + * @private + */ + _createCacheCanvas: function () { + this._cacheProperties = {}; + this._cacheCanvas = fabric.util.createCanvasElement(); + this._cacheContext = this._cacheCanvas.getContext('2d'); + this._updateCacheCanvas(); + // if canvas gets created, is empty, so dirty. + this.dirty = true; + }, + /** + * Limit the cache dimensions so that X * Y do not cross config.perfLimitSizeTotal + * and each side do not cross fabric.cacheSideLimit + * those numbers are configurable so that you can get as much detail as you want + * making bargain with performances. + * @param {Object} dims + * @param {Object} dims.width width of canvas + * @param {Object} dims.height height of canvas + * @param {Object} dims.zoomX zoomX zoom value to unscale the canvas before drawing cache + * @param {Object} dims.zoomY zoomY zoom value to unscale the canvas before drawing cache + * @return {Object}.width width of canvas + * @return {Object}.height height of canvas + * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache + * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache + */ + _limitCacheSize: function (dims) { + var width = dims.width, height = dims.height, max = config.maxCacheSideLimit, min = config.minCacheSideLimit; + if (width <= max && + height <= max && + width * height <= config.perfLimitSizeTotal) { + if (width < min) { + dims.width = min; + } + if (height < min) { + dims.height = min; + } + return dims; + } + var ar = width / height, [limX, limY] = cache.limitDimsByArea(ar), x = capValue(min, limX, max), y = capValue(min, limY, max); + if (width > x) { + dims.zoomX /= width / x; + dims.width = x; + dims.capped = true; + } + if (height > y) { + dims.zoomY /= height / y; + dims.height = y; + dims.capped = true; + } + return dims; + }, + /** + * Return the dimension and the zoom level needed to create a cache canvas + * big enough to host the object to be cached. + * @private + * @return {Object}.x width of object to be cached + * @return {Object}.y height of object to be cached + * @return {Object}.width width of canvas + * @return {Object}.height height of canvas + * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache + * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache + */ + _getCacheCanvasDimensions: function () { + var objectScale = this.getTotalObjectScaling(), + // caculate dimensions without skewing + dim = this._getTransformedDimensions({ skewX: 0, skewY: 0 }), neededX = (dim.x * objectScale.x) / this.scaleX, neededY = (dim.y * objectScale.y) / this.scaleY; + return { + // for sure this ALIASING_LIMIT is slightly creating problem + // in situation in which the cache canvas gets an upper limit + // also objectScale contains already scaleX and scaleY + width: neededX + ALIASING_LIMIT, + height: neededY + ALIASING_LIMIT, + zoomX: objectScale.x, + zoomY: objectScale.y, + x: neededX, + y: neededY, + }; + }, + /** + * Update width and height of the canvas for cache + * returns true or false if canvas needed resize. + * @private + * @return {Boolean} true if the canvas has been resized + */ + _updateCacheCanvas: function () { + var targetCanvas = this.canvas; + if (this.noScaleCache && + targetCanvas && + targetCanvas._currentTransform) { + var target = targetCanvas._currentTransform.target, action = targetCanvas._currentTransform.action; + if (this === target && + action.slice && + action.slice(0, 5) === 'scale') { + return false; + } + } + var canvas = this._cacheCanvas, dims = this._limitCacheSize(this._getCacheCanvasDimensions()), minCacheSize = config.minCacheSideLimit, width = dims.width, height = dims.height, drawingWidth, drawingHeight, zoomX = dims.zoomX, zoomY = dims.zoomY, dimensionsChanged = width !== this.cacheWidth || height !== this.cacheHeight, zoomChanged = this.zoomX !== zoomX || this.zoomY !== zoomY, shouldRedraw = dimensionsChanged || zoomChanged, additionalWidth = 0, additionalHeight = 0, shouldResizeCanvas = false; + if (dimensionsChanged) { + var canvasWidth = this._cacheCanvas.width, canvasHeight = this._cacheCanvas.height, sizeGrowing = width > canvasWidth || height > canvasHeight, sizeShrinking = (width < canvasWidth * 0.9 || height < canvasHeight * 0.9) && + canvasWidth > minCacheSize && + canvasHeight > minCacheSize; + shouldResizeCanvas = sizeGrowing || sizeShrinking; + if (sizeGrowing && + !dims.capped && + (width > minCacheSize || height > minCacheSize)) { + additionalWidth = width * 0.1; + additionalHeight = height * 0.1; + } + } + if (this instanceof fabric.Text && this.path) { + shouldRedraw = true; + shouldResizeCanvas = true; + additionalWidth += this.getHeightOfLine(0) * this.zoomX; + additionalHeight += this.getHeightOfLine(0) * this.zoomY; + } + if (shouldRedraw) { + if (shouldResizeCanvas) { + canvas.width = Math.ceil(width + additionalWidth); + canvas.height = Math.ceil(height + additionalHeight); + } + else { + this._cacheContext.setTransform(1, 0, 0, 1, 0, 0); + this._cacheContext.clearRect(0, 0, canvas.width, canvas.height); + } + drawingWidth = dims.x / 2; + drawingHeight = dims.y / 2; + this.cacheTranslationX = + Math.round(canvas.width / 2 - drawingWidth) + drawingWidth; + this.cacheTranslationY = + Math.round(canvas.height / 2 - drawingHeight) + drawingHeight; + this.cacheWidth = width; + this.cacheHeight = height; + this._cacheContext.translate(this.cacheTranslationX, this.cacheTranslationY); + this._cacheContext.scale(zoomX, zoomY); + this.zoomX = zoomX; + this.zoomY = zoomY; + return true; + } + return false; + }, + /** + * Sets object's properties from options + * @param {Object} [options] Options object + */ + setOptions: function (options) { + this._setOptions(options); + }, + /** + * Transforms context when rendering an object + * @param {CanvasRenderingContext2D} ctx Context + */ + transform: function (ctx) { + var needFullTransform = (this.group && !this.group._transformDone) || + (this.group && this.canvas && ctx === this.canvas.contextTop); + var m = this.calcTransformMatrix(!needFullTransform); + ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); + }, + /** + * Returns an object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toObject: function (propertiesToInclude) { + const NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS, clipPathData = this.clipPath && !this.clipPath.excludeFromExport + ? Object.assign(Object.assign({}, this.clipPath.toObject(propertiesToInclude)), { inverted: this.clipPath.inverted, absolutePositioned: this.clipPath.absolutePositioned }) : null, object = Object.assign(Object.assign(Object.assign({}, pick(this, propertiesToInclude)), { type: this.type, version: version, originX: this.originX, originY: this.originY, left: toFixed(this.left, NUM_FRACTION_DIGITS), top: toFixed(this.top, NUM_FRACTION_DIGITS), width: toFixed(this.width, NUM_FRACTION_DIGITS), height: toFixed(this.height, NUM_FRACTION_DIGITS), fill: this.fill && this.fill.toObject + ? this.fill.toObject() + : this.fill, stroke: this.stroke && this.stroke.toObject + ? this.stroke.toObject() + : this.stroke, strokeWidth: toFixed(this.strokeWidth, NUM_FRACTION_DIGITS), strokeDashArray: this.strokeDashArray + ? this.strokeDashArray.concat() + : this.strokeDashArray, strokeLineCap: this.strokeLineCap, strokeDashOffset: this.strokeDashOffset, strokeLineJoin: this.strokeLineJoin, strokeUniform: this.strokeUniform, strokeMiterLimit: toFixed(this.strokeMiterLimit, NUM_FRACTION_DIGITS), scaleX: toFixed(this.scaleX, NUM_FRACTION_DIGITS), scaleY: toFixed(this.scaleY, NUM_FRACTION_DIGITS), angle: toFixed(this.angle, NUM_FRACTION_DIGITS), flipX: this.flipX, flipY: this.flipY, opacity: toFixed(this.opacity, NUM_FRACTION_DIGITS), shadow: this.shadow && this.shadow.toObject + ? this.shadow.toObject() + : this.shadow, visible: this.visible, backgroundColor: this.backgroundColor, fillRule: this.fillRule, paintFirst: this.paintFirst, globalCompositeOperation: this.globalCompositeOperation, skewX: toFixed(this.skewX, NUM_FRACTION_DIGITS), skewY: toFixed(this.skewY, NUM_FRACTION_DIGITS) }), (clipPathData ? { clipPath: clipPathData } : null)); + return !this.includeDefaultValues + ? this._removeDefaultValues(object) + : object; + }, + /** + * Returns (dataless) object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toDatalessObject: function (propertiesToInclude) { + // will be overwritten by subclasses + return this.toObject(propertiesToInclude); + }, + /** + * @private + * @param {Object} object + */ + _removeDefaultValues: function (object) { + var prototype = fabric.util.getKlass(object.type).prototype; + Object.keys(object).forEach(function (prop) { + if (prop === 'left' || prop === 'top' || prop === 'type') { + return; + } + if (object[prop] === prototype[prop]) { + delete object[prop]; + } + // basically a check for [] === [] + if (Array.isArray(object[prop]) && + Array.isArray(prototype[prop]) && + object[prop].length === 0 && + prototype[prop].length === 0) { + delete object[prop]; + } + }); + return object; + }, + /** + * Returns a string representation of an instance + * @return {String} + */ + toString: function () { + return '#'; + }, + /** + * Return the object scale factor counting also the group scaling + * @return {Point} + */ + getObjectScaling: function () { + // if the object is a top level one, on the canvas, we go for simple aritmetic + // otherwise the complex method with angles will return approximations and decimals + // and will likely kill the cache when not needed + // https://github.com/fabricjs/fabric.js/issues/7157 + if (!this.group) { + return new Point(Math.abs(this.scaleX), Math.abs(this.scaleY)); + } + // if we are inside a group total zoom calculation is complex, we defer to generic matrices + var options = fabric.util.qrDecompose(this.calcTransformMatrix()); + return new Point(Math.abs(options.scaleX), Math.abs(options.scaleY)); + }, + /** + * Return the object scale factor counting also the group scaling, zoom and retina + * @return {Object} object with scaleX and scaleY properties + */ + getTotalObjectScaling: function () { + var scale = this.getObjectScaling(); + if (this.canvas) { + var zoom = this.canvas.getZoom(); + var retina = this.canvas.getRetinaScaling(); + return scale.scalarMultiply(zoom * retina); + } + return scale; + }, + /** + * Return the object opacity counting also the group property + * @return {Number} + */ + getObjectOpacity: function () { + var opacity = this.opacity; + if (this.group) { + opacity *= this.group.getObjectOpacity(); + } + return opacity; + }, + /** + * Returns the object angle relative to canvas counting also the group property + * @returns {number} + */ + getTotalAngle: function () { + return this.group + ? fabric.util.qrDecompose(this.calcTransformMatrix()).angle + : this.angle; + }, + /** + * @private + * @param {String} key + * @param {*} value + * @return {fabric.Object} thisArg + */ + _set: function (key, value) { + var shouldConstrainValue = key === 'scaleX' || key === 'scaleY', isChanged = this[key] !== value, groupNeedsUpdate = false; + if (shouldConstrainValue) { + value = this._constrainScale(value); + } + if (key === 'scaleX' && value < 0) { + this.flipX = !this.flipX; + value *= -1; + } + else if (key === 'scaleY' && value < 0) { + this.flipY = !this.flipY; + value *= -1; + } + else if (key === 'shadow' && + value && + !(value instanceof fabric.Shadow)) { + value = new fabric.Shadow(value); + } + else if (key === 'dirty' && this.group) { + this.group.set('dirty', value); + } + this[key] = value; + if (isChanged) { + groupNeedsUpdate = this.group && this.group.isOnACache(); + if (this.cacheProperties.indexOf(key) > -1) { + this.dirty = true; + groupNeedsUpdate && this.group.set('dirty', true); + } + else if (groupNeedsUpdate && + this.stateProperties.indexOf(key) > -1) { + this.group.set('dirty', true); + } + } + return this; + }, + /** + * Retrieves viewportTransform from Object's canvas if possible + * @method getViewportTransform + * @memberOf fabric.Object.prototype + * @return {Array} + */ + getViewportTransform: function () { + if (this.canvas && this.canvas.viewportTransform) { + return this.canvas.viewportTransform; + } + return fabric.iMatrix.concat(); + }, + /* + * @private + * return if the object would be visible in rendering + * @memberOf fabric.Object.prototype + * @return {Boolean} + */ + isNotVisible: function () { + return (this.opacity === 0 || + (!this.width && !this.height && this.strokeWidth === 0) || + !this.visible); + }, + /** + * Renders an object on a specified context + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + render: function (ctx) { + // do not render if width/height are zeros or object is not visible + if (this.isNotVisible()) { + return; + } + if (this.canvas && + this.canvas.skipOffscreen && + !this.group && + !this.isOnScreen()) { + return; + } + ctx.save(); + this._setupCompositeOperation(ctx); + this.drawSelectionBackground(ctx); + this.transform(ctx); + this._setOpacity(ctx); + this._setShadow(ctx, this); + if (this.shouldCache()) { + this.renderCache(); + this.drawCacheOnCanvas(ctx); + } + else { + this._removeCacheCanvas(); + this.dirty = false; + this.drawObject(ctx); + if (this.objectCaching && this.statefullCache) { + this.saveState({ propertySet: 'cacheProperties' }); + } + } + ctx.restore(); + }, + renderCache: function (options) { + options = options || {}; + if (!this._cacheCanvas || !this._cacheContext) { + this._createCacheCanvas(); + } + if (this.isCacheDirty()) { + this.statefullCache && + this.saveState({ propertySet: 'cacheProperties' }); + this.drawObject(this._cacheContext, options.forClipping); + this.dirty = false; + } + }, + /** + * Remove cacheCanvas and its dimensions from the objects + */ + _removeCacheCanvas: function () { + this._cacheCanvas = null; + this._cacheContext = null; + this.cacheWidth = 0; + this.cacheHeight = 0; + }, + /** + * return true if the object will draw a stroke + * Does not consider text styles. This is just a shortcut used at rendering time + * We want it to be an approximation and be fast. + * wrote to avoid extra caching, it has to return true when stroke happens, + * can guess when it will not happen at 100% chance, does not matter if it misses + * some use case where the stroke is invisible. + * @since 3.0.0 + * @returns Boolean + */ + hasStroke: function () { + return (this.stroke && this.stroke !== 'transparent' && this.strokeWidth !== 0); + }, + /** + * return true if the object will draw a fill + * Does not consider text styles. This is just a shortcut used at rendering time + * We want it to be an approximation and be fast. + * wrote to avoid extra caching, it has to return true when fill happens, + * can guess when it will not happen at 100% chance, does not matter if it misses + * some use case where the fill is invisible. + * @since 3.0.0 + * @returns Boolean + */ + hasFill: function () { + return this.fill && this.fill !== 'transparent'; + }, + /** + * When set to `true`, force the object to have its own cache, even if it is inside a group + * it may be needed when your object behave in a particular way on the cache and always needs + * its own isolated canvas to render correctly. + * Created to be overridden + * since 1.7.12 + * @returns Boolean + */ + needsItsOwnCache: function () { + if (this.paintFirst === 'stroke' && + this.hasFill() && + this.hasStroke() && + typeof this.shadow === 'object') { + return true; + } + if (this.clipPath) { + return true; + } + return false; + }, + /** + * Decide if the object should cache or not. Create its own cache level + * objectCaching is a global flag, wins over everything + * needsItsOwnCache should be used when the object drawing method requires + * a cache step. None of the fabric classes requires it. + * Generally you do not cache objects in groups because the group outside is cached. + * Read as: cache if is needed, or if the feature is enabled but we are not already caching. + * @return {Boolean} + */ + shouldCache: function () { + this.ownCaching = + this.needsItsOwnCache() || + (this.objectCaching && (!this.group || !this.group.isOnACache())); + return this.ownCaching; + }, + /** + * Check if this object or a child object will cast a shadow + * used by Group.shouldCache to know if child has a shadow recursively + * @return {Boolean} + * @deprecated + */ + willDrawShadow: function () { + return (!!this.shadow && + (this.shadow.offsetX !== 0 || this.shadow.offsetY !== 0)); + }, + /** + * Execute the drawing operation for an object clipPath + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {fabric.Object} clipPath + */ + drawClipPathOnCache: function (ctx, clipPath) { + ctx.save(); + // DEBUG: uncomment this line, comment the following + // ctx.globalAlpha = 0.4 + if (clipPath.inverted) { + ctx.globalCompositeOperation = 'destination-out'; + } + else { + ctx.globalCompositeOperation = 'destination-in'; + } + //ctx.scale(1 / 2, 1 / 2); + if (clipPath.absolutePositioned) { + var m = fabric.util.invertTransform(this.calcTransformMatrix()); + ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); + } + clipPath.transform(ctx); + ctx.scale(1 / clipPath.zoomX, 1 / clipPath.zoomY); + ctx.drawImage(clipPath._cacheCanvas, -clipPath.cacheTranslationX, -clipPath.cacheTranslationY); + ctx.restore(); + }, + /** + * Execute the drawing operation for an object on a specified context + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawObject: function (ctx, forClipping) { + var originalFill = this.fill, originalStroke = this.stroke; + if (forClipping) { + this.fill = 'black'; + this.stroke = ''; + this._setClippingProperties(ctx); + } + else { + this._renderBackground(ctx); + } + this._render(ctx); + this._drawClipPath(ctx, this.clipPath); + this.fill = originalFill; + this.stroke = originalStroke; + }, + /** + * Prepare clipPath state and cache and draw it on instance's cache + * @param {CanvasRenderingContext2D} ctx + * @param {fabric.Object} clipPath + */ + _drawClipPath: function (ctx, clipPath) { + if (!clipPath) { + return; + } + // needed to setup a couple of variables + // path canvas gets overridden with this one. + // TODO find a better solution? + clipPath._set('canvas', this.canvas); + clipPath.shouldCache(); + clipPath._transformDone = true; + clipPath.renderCache({ forClipping: true }); + this.drawClipPathOnCache(ctx, clipPath); + }, + /** + * Paint the cached copy of the object on the target context. + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawCacheOnCanvas: function (ctx) { + ctx.scale(1 / this.zoomX, 1 / this.zoomY); + ctx.drawImage(this._cacheCanvas, -this.cacheTranslationX, -this.cacheTranslationY); + }, + /** + * Check if cache is dirty + * @param {Boolean} skipCanvas skip canvas checks because this object is painted + * on parent canvas. + */ + isCacheDirty: function (skipCanvas) { + if (this.isNotVisible()) { + return false; + } + if (this._cacheCanvas && + this._cacheContext && + !skipCanvas && + this._updateCacheCanvas()) { + // in this case the context is already cleared. + return true; + } + else { + if (this.dirty || + (this.clipPath && this.clipPath.absolutePositioned) || + (this.statefullCache && this.hasStateChanged('cacheProperties'))) { + if (this._cacheCanvas && this._cacheContext && !skipCanvas) { + var width = this.cacheWidth / this.zoomX; + var height = this.cacheHeight / this.zoomY; + this._cacheContext.clearRect(-width / 2, -height / 2, width, height); + } + return true; + } + } + return false; + }, + /** + * Draws a background for the object big as its untransformed dimensions + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderBackground: function (ctx) { + if (!this.backgroundColor) { + return; + } + var dim = this._getNonTransformedDimensions(); + ctx.fillStyle = this.backgroundColor; + ctx.fillRect(-dim.x / 2, -dim.y / 2, dim.x, dim.y); + // if there is background color no other shadows + // should be casted + this._removeShadow(ctx); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _setOpacity: function (ctx) { + if (this.group && !this.group._transformDone) { + ctx.globalAlpha = this.getObjectOpacity(); + } + else { + ctx.globalAlpha *= this.opacity; + } + }, + _setStrokeStyles: function (ctx, decl) { + var stroke = decl.stroke; + if (stroke) { + ctx.lineWidth = decl.strokeWidth; + ctx.lineCap = decl.strokeLineCap; + ctx.lineDashOffset = decl.strokeDashOffset; + ctx.lineJoin = decl.strokeLineJoin; + ctx.miterLimit = decl.strokeMiterLimit; + if (stroke.toLive) { + if (stroke.gradientUnits === 'percentage' || + stroke.gradientTransform || + stroke.patternTransform) { + // need to transform gradient in a pattern. + // this is a slow process. If you are hitting this codepath, and the object + // is not using caching, you should consider switching it on. + // we need a canvas as big as the current object caching canvas. + this._applyPatternForTransformedGradient(ctx, stroke); + } + else { + // is a simple gradient or pattern + ctx.strokeStyle = stroke.toLive(ctx, this); + this._applyPatternGradientTransform(ctx, stroke); + } + } + else { + // is a color + ctx.strokeStyle = decl.stroke; + } + } + }, + _setFillStyles: function (ctx, decl) { + var fill = decl.fill; + if (fill) { + if (fill.toLive) { + ctx.fillStyle = fill.toLive(ctx, this); + this._applyPatternGradientTransform(ctx, decl.fill); + } + else { + ctx.fillStyle = fill; + } + } + }, + _setClippingProperties: function (ctx) { + ctx.globalAlpha = 1; + ctx.strokeStyle = 'transparent'; + ctx.fillStyle = '#000000'; + }, + /** + * @private + * Sets line dash + * @param {CanvasRenderingContext2D} ctx Context to set the dash line on + * @param {Array} dashArray array representing dashes + */ + _setLineDash: function (ctx, dashArray) { + if (!dashArray || dashArray.length === 0) { + return; + } + // Spec requires the concatenation of two copies the dash list when the number of elements is odd + if (1 & dashArray.length) { + dashArray.push.apply(dashArray, dashArray); + } + ctx.setLineDash(dashArray); + }, + /** + * Renders controls and borders for the object + * the context here is not transformed + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Object} [styleOverride] properties to override the object style + */ + _renderControls: function (ctx, styleOverride) { + var vpt = this.getViewportTransform(), matrix = this.calcTransformMatrix(), options, drawBorders, drawControls; + styleOverride = styleOverride || {}; + drawBorders = + typeof styleOverride.hasBorders !== 'undefined' + ? styleOverride.hasBorders + : this.hasBorders; + drawControls = + typeof styleOverride.hasControls !== 'undefined' + ? styleOverride.hasControls + : this.hasControls; + matrix = fabric.util.multiplyTransformMatrices(vpt, matrix); + options = fabric.util.qrDecompose(matrix); + ctx.save(); + ctx.translate(options.translateX, options.translateY); + ctx.lineWidth = 1 * this.borderScaleFactor; + if (!this.group) { + ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1; + } + if (this.flipX) { + options.angle -= 180; + } + ctx.rotate(degreesToRadians(this.group ? options.angle : this.angle)); + drawBorders && this.drawBorders(ctx, options, styleOverride); + drawControls && this.drawControls(ctx, styleOverride); + ctx.restore(); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _setShadow: function (ctx) { + if (!this.shadow) { + return; + } + var shadow = this.shadow, canvas = this.canvas, multX = (canvas && canvas.viewportTransform[0]) || 1, multY = (canvas && canvas.viewportTransform[3]) || 1, scaling = shadow.nonScaling + ? new Point(1, 1) + : this.getObjectScaling(); + if (canvas && canvas._isRetinaScaling()) { + multX *= config.devicePixelRatio; + multY *= config.devicePixelRatio; + } + ctx.shadowColor = shadow.color; + ctx.shadowBlur = + (shadow.blur * + config.browserShadowBlurConstant * + (multX + multY) * + (scaling.x + scaling.y)) / + 4; + ctx.shadowOffsetX = shadow.offsetX * multX * scaling.x; + ctx.shadowOffsetY = shadow.offsetY * multY * scaling.y; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _removeShadow: function (ctx) { + if (!this.shadow) { + return; + } + ctx.shadowColor = ''; + ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Object} filler fabric.Pattern or fabric.Gradient + * @return {Object} offset.offsetX offset for text rendering + * @return {Object} offset.offsetY offset for text rendering + */ + _applyPatternGradientTransform: function (ctx, filler) { + if (!filler || !filler.toLive) { + return { offsetX: 0, offsetY: 0 }; + } + var t = filler.gradientTransform || filler.patternTransform; + var offsetX = -this.width / 2 + filler.offsetX || 0, offsetY = -this.height / 2 + filler.offsetY || 0; + if (filler.gradientUnits === 'percentage') { + ctx.transform(this.width, 0, 0, this.height, offsetX, offsetY); + } + else { + ctx.transform(1, 0, 0, 1, offsetX, offsetY); + } + if (t) { + ctx.transform(t[0], t[1], t[2], t[3], t[4], t[5]); + } + return { offsetX: offsetX, offsetY: offsetY }; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderPaintInOrder: function (ctx) { + if (this.paintFirst === 'stroke') { + this._renderStroke(ctx); + this._renderFill(ctx); + } + else { + this._renderFill(ctx); + this._renderStroke(ctx); + } + }, + /** + * @private + * function that actually render something on the context. + * empty here to allow Obects to work on tests to benchmark fabric functionalites + * not related to rendering + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function ( /* ctx */) { }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderFill: function (ctx) { + if (!this.fill) { + return; + } + ctx.save(); + this._setFillStyles(ctx, this); + if (this.fillRule === 'evenodd') { + ctx.fill('evenodd'); + } + else { + ctx.fill(); + } + ctx.restore(); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderStroke: function (ctx) { + if (!this.stroke || this.strokeWidth === 0) { + return; + } + if (this.shadow && !this.shadow.affectStroke) { + this._removeShadow(ctx); + } + ctx.save(); + if (this.strokeUniform) { + var scaling = this.getObjectScaling(); + ctx.scale(1 / scaling.x, 1 / scaling.y); + } + this._setLineDash(ctx, this.strokeDashArray); + this._setStrokeStyles(ctx, this); + ctx.stroke(); + ctx.restore(); + }, + /** + * This function try to patch the missing gradientTransform on canvas gradients. + * transforming a context to transform the gradient, is going to transform the stroke too. + * we want to transform the gradient but not the stroke operation, so we create + * a transformed gradient on a pattern and then we use the pattern instead of the gradient. + * this method has drwabacks: is slow, is in low resolution, needs a patch for when the size + * is limited. + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {fabric.Gradient} filler a fabric gradient instance + */ + _applyPatternForTransformedGradient: function (ctx, filler) { + var dims = this._limitCacheSize(this._getCacheCanvasDimensions()), pCanvas = fabric.util.createCanvasElement(), pCtx, retinaScaling = this.canvas.getRetinaScaling(), width = dims.x / this.scaleX / retinaScaling, height = dims.y / this.scaleY / retinaScaling; + pCanvas.width = width; + pCanvas.height = height; + pCtx = pCanvas.getContext('2d'); + pCtx.beginPath(); + pCtx.moveTo(0, 0); + pCtx.lineTo(width, 0); + pCtx.lineTo(width, height); + pCtx.lineTo(0, height); + pCtx.closePath(); + pCtx.translate(width / 2, height / 2); + pCtx.scale(dims.zoomX / this.scaleX / retinaScaling, dims.zoomY / this.scaleY / retinaScaling); + this._applyPatternGradientTransform(pCtx, filler); + pCtx.fillStyle = filler.toLive(ctx); + pCtx.fill(); + ctx.translate(-this.width / 2 - this.strokeWidth / 2, -this.height / 2 - this.strokeWidth / 2); + ctx.scale((retinaScaling * this.scaleX) / dims.zoomX, (retinaScaling * this.scaleY) / dims.zoomY); + ctx.strokeStyle = pCtx.createPattern(pCanvas, 'no-repeat'); + }, + /** + * This function is an helper for svg import. it returns the center of the object in the svg + * untransformed coordinates + * @private + * @return {Object} center point from element coordinates + */ + _findCenterFromElement: function () { + return { x: this.left + this.width / 2, y: this.top + this.height / 2 }; + }, + /** + * This function is an helper for svg import. it decompose the transformMatrix + * and assign properties to object. + * untransformed coordinates + * @private + * @chainable + */ + _assignTransformMatrixProps: function () { + if (this.transformMatrix) { + var options = fabric.util.qrDecompose(this.transformMatrix); + this.flipX = false; + this.flipY = false; + this.set('scaleX', options.scaleX); + this.set('scaleY', options.scaleY); + this.angle = options.angle; + this.skewX = options.skewX; + this.skewY = 0; + } + }, + /** + * This function is an helper for svg import. it removes the transform matrix + * and set to object properties that fabricjs can handle + * @private + * @param {Object} preserveAspectRatioOptions + * @return {thisArg} + */ + _removeTransformMatrix: function (preserveAspectRatioOptions) { + var center = this._findCenterFromElement(); + if (this.transformMatrix) { + this._assignTransformMatrixProps(); + center = fabric.util.transformPoint(center, this.transformMatrix); + } + this.transformMatrix = null; + if (preserveAspectRatioOptions) { + this.scaleX *= preserveAspectRatioOptions.scaleX; + this.scaleY *= preserveAspectRatioOptions.scaleY; + this.cropX = preserveAspectRatioOptions.cropX; + this.cropY = preserveAspectRatioOptions.cropY; + center.x += preserveAspectRatioOptions.offsetLeft; + center.y += preserveAspectRatioOptions.offsetTop; + this.width = preserveAspectRatioOptions.width; + this.height = preserveAspectRatioOptions.height; + } + this.setPositionByOrigin(center, 'center', 'center'); + }, + /** + * Clones an instance. + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @returns {Promise} + */ + clone: function (propertiesToInclude) { + var objectForm = this.toObject(propertiesToInclude); + return this.constructor.fromObject(objectForm); + }, + /** + * Creates an instance of fabric.Image out of an object + * makes use of toCanvasElement. + * Once this method was based on toDataUrl and loadImage, so it also had a quality + * and format option. toCanvasElement is faster and produce no loss of quality. + * If you need to get a real Jpeg or Png from an object, using toDataURL is the right way to do it. + * toCanvasElement and then toBlob from the obtained canvas is also a good option. + * @param {Object} [options] for clone as image, passed to toDataURL + * @param {Number} [options.multiplier=1] Multiplier to scale by + * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 + * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 + * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 + * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 + * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 + * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 + * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 + * @return {fabric.Image} Object cloned as image. + */ + cloneAsImage: function (options) { + var canvasEl = this.toCanvasElement(options); + return new fabric.Image(canvasEl); + }, + /** + * Converts an object into a HTMLCanvas element + * @param {Object} options Options object + * @param {Number} [options.multiplier=1] Multiplier to scale by + * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 + * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 + * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 + * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 + * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 + * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 + * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 + * @return {HTMLCanvasElement} Returns DOM element with the fabric.Object + */ + toCanvasElement: function (options) { + options || (options = {}); + var utils = fabric.util, origParams = utils.saveObjectTransform(this), originalGroup = this.group, originalShadow = this.shadow, abs = Math.abs, retinaScaling = options.enableRetinaScaling + ? Math.max(config.devicePixelRatio, 1) + : 1, multiplier = (options.multiplier || 1) * retinaScaling; + delete this.group; + if (options.withoutTransform) { + utils.resetObjectTransform(this); + } + if (options.withoutShadow) { + this.shadow = null; + } + var el = fabric.util.createCanvasElement(), + // skip canvas zoom and calculate with setCoords now. + boundingRect = this.getBoundingRect(true, true), shadow = this.shadow, shadowOffset = { x: 0, y: 0 }, width, height; + if (shadow) { + var shadowBlur = shadow.blur; + var scaling = shadow.nonScaling + ? new Point(1, 1) + : this.getObjectScaling(); + // consider non scaling shadow. + shadowOffset.x = + 2 * Math.round(abs(shadow.offsetX) + shadowBlur) * abs(scaling.x); + shadowOffset.y = + 2 * Math.round(abs(shadow.offsetY) + shadowBlur) * abs(scaling.y); + } + width = boundingRect.width + shadowOffset.x; + height = boundingRect.height + shadowOffset.y; + // if the current width/height is not an integer + // we need to make it so. + el.width = Math.ceil(width); + el.height = Math.ceil(height); + var canvas = new fabric.StaticCanvas(el, { + enableRetinaScaling: false, + renderOnAddRemove: false, + skipOffscreen: false, + }); + if (options.format === 'jpeg') { + canvas.backgroundColor = '#fff'; + } + this.setPositionByOrigin(new Point(canvas.width / 2, canvas.height / 2), 'center', 'center'); + var originalCanvas = this.canvas; + canvas._objects = [this]; + this.set('canvas', canvas); + this.setCoords(); + var canvasEl = canvas.toCanvasElement(multiplier || 1, options); + this.set('canvas', originalCanvas); + this.shadow = originalShadow; + if (originalGroup) { + this.group = originalGroup; + } + this.set(origParams); + this.setCoords(); + // canvas.dispose will call image.dispose that will nullify the elements + // since this canvas is a simple element for the process, we remove references + // to objects in this way in order to avoid object trashing. + canvas._objects = []; + // since render has settled it is safe to destroy canvas + canvas.destroy(); + canvas = null; + return canvasEl; + }, + /** + * Converts an object into a data-url-like string + * @param {Object} options Options object + * @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png" + * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg. + * @param {Number} [options.multiplier=1] Multiplier to scale by + * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 + * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 + * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 + * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 + * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 + * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 + * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 + * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format + */ + toDataURL: function (options) { + options || (options = {}); + return fabric.util.toDataURL(this.toCanvasElement(options), options.format || 'png', options.quality || 1); + }, + /** + * Returns true if specified type is identical to the type of an instance + * @param {String} type Type to check against + * @return {Boolean} + */ + isType: function (type) { + return arguments.length > 1 + ? Array.from(arguments).includes(this.type) + : this.type === type; + }, + /** + * Returns complexity of an instance + * @return {Number} complexity of this instance (is 1 unless subclassed) + */ + complexity: function () { + return 1; + }, + /** + * Returns a JSON representation of an instance + * @return {Object} JSON + */ + toJSON: function () { + // delegate, not alias + return this.toObject(); + }, + /** + * Sets "angle" of an instance with centered rotation + * @param {Number} angle Angle value (in degrees) + * @return {fabric.Object} thisArg + * @chainable + */ + rotate: function (angle) { + var shouldCenterOrigin = (this.originX !== 'center' || this.originY !== 'center') && + this.centeredRotation; + if (shouldCenterOrigin) { + this._setOriginToCenter(); + } + this.set('angle', angle); + if (shouldCenterOrigin) { + this._resetOrigin(); + } + return this; + }, + /** + * Centers object horizontally on canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + centerH: function () { + this.canvas && this.canvas.centerObjectH(this); + return this; + }, + /** + * Centers object horizontally on current viewport of canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + viewportCenterH: function () { + this.canvas && this.canvas.viewportCenterObjectH(this); + return this; + }, + /** + * Centers object vertically on canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + centerV: function () { + this.canvas && this.canvas.centerObjectV(this); + return this; + }, + /** + * Centers object vertically on current viewport of canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + viewportCenterV: function () { + this.canvas && this.canvas.viewportCenterObjectV(this); + return this; + }, + /** + * Centers object vertically and horizontally on canvas to which is was added last + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + center: function () { + this.canvas && this.canvas.centerObject(this); + return this; + }, + /** + * Centers object on current viewport of canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + viewportCenter: function () { + this.canvas && this.canvas.viewportCenterObject(this); + return this; + }, + /** + * This callback function is called by the parent group of an object every + * time a non-delegated property changes on the group. It is passed the key + * and value as parameters. Not adding in this function's signature to avoid + * Travis build error about unused variables. + */ + setOnGroup: function () { + // implemented by sub-classes, as needed. + }, + /** + * Sets canvas globalCompositeOperation for specific object + * custom composition operation for the particular object can be specified using globalCompositeOperation property + * @param {CanvasRenderingContext2D} ctx Rendering canvas context + */ + _setupCompositeOperation: function (ctx) { + if (this.globalCompositeOperation) { + ctx.globalCompositeOperation = this.globalCompositeOperation; + } + }, + /** + * cancel instance's running animations + * override if necessary to dispose artifacts such as `clipPath` + */ + dispose: function () { + // todo verify this. + // runningAnimations is always truthy + if (runningAnimations) { + runningAnimations.cancelByTarget(this); + } + }, + }); + fabric.util.createAccessors && fabric.util.createAccessors(fabric.Object); + extend(fabric.Object.prototype, fabric.Observable); /** - * Shadow blur - * @type Number - */ - blur: 0, - + * + * @param {Function} klass + * @param {object} object + * @param {object} [options] + * @param {string} [options.extraParam] property to pass as first argument to the constructor + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @returns {Promise} + */ + fabric.Object._fromObject = function (klass, object, _a = {}) { + var { extraParam } = _a, options = __rest(_a, ["extraParam"]); + return enlivenObjectEnlivables(clone(object, true), options).then((enlivedMap) => { + // from the resulting enlived options, extract options.extraParam to arg0 + // to avoid accidental overrides later + const _a = Object.assign(Object.assign({}, options), enlivedMap), _b = extraParam, arg0 = _a[_b], rest = __rest(_a, [typeof _b === "symbol" ? _b : _b + ""]); + return extraParam ? new klass(arg0, rest) : new klass(rest); + }); + }; /** - * Shadow horizontal offset - * @type Number - * @default - */ - offsetX: 0, - + * + * @static + * @memberOf fabric.Object + * @param {object} object + * @param {object} [options] + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @returns {Promise} + */ + fabric.Object.fromObject = function (object, options) { + return fabric.Object._fromObject(fabric.Object, object, options); + }; /** - * Shadow vertical offset + * Unique id used internally when creating SVG elements + * @static + * @memberOf fabric.Object * @type Number - * @default - */ - offsetY: 0, - - /** - * Whether the shadow should affect stroke operations - * @type Boolean - * @default - */ - affectStroke: false, - - /** - * Indicates whether toObject should include default values - * @type Boolean - * @default - */ - includeDefaultValues: true, - - /** - * When `false`, the shadow will scale with the object. - * When `true`, the shadow's offsetX, offsetY, and blur will not be affected by the object's scale. - * default to false - * @type Boolean - * @default */ - nonScaling: false, + fabric.Object.__uid = 0; +})(typeof exports !== 'undefined' ? exports : window); +//@ts-nocheck +(function (global) { + var fabric = global.fabric, degreesToRadians = fabric.util.degreesToRadians, originXOffset = { + left: -0.5, + center: 0, + right: 0.5, + }, originYOffset = { + top: -0.5, + center: 0, + bottom: 0.5, + }; /** - * Constructor - * @param {Object|String} [options] Options object with any of color, blur, offsetX, offsetY properties or string (e.g. "rgba(0,0,0,0.2) 2px 2px 10px") - * @return {fabric.Shadow} thisArg - */ - initialize: function(options) { - - if (typeof options === 'string') { - options = this._parseShadow(options); - } - - for (var prop in options) { - this[prop] = options[prop]; - } - - this.id = fabric.Object.__uid++; - }, - - /** - * @private - * @param {String} shadow Shadow value to parse - * @return {Object} Shadow object with color, offsetX, offsetY and blur - */ - _parseShadow: function(shadow) { - var shadowStr = shadow.trim(), - offsetsAndBlur = fabric.Shadow.reOffsetsAndBlur.exec(shadowStr) || [], - color = shadowStr.replace(fabric.Shadow.reOffsetsAndBlur, '') || 'rgb(0,0,0)'; - - return { - color: color.trim(), - offsetX: parseFloat(offsetsAndBlur[1], 10) || 0, - offsetY: parseFloat(offsetsAndBlur[2], 10) || 0, - blur: parseFloat(offsetsAndBlur[3], 10) || 0 - }; - }, - - /** - * Returns a string representation of an instance - * @see http://www.w3.org/TR/css-text-decor-3/#text-shadow - * @return {String} Returns CSS3 text-shadow declaration - */ - toString: function() { - return [this.offsetX, this.offsetY, this.blur, this.color].join('px '); - }, - - /* _TO_SVG_START_ */ - /** - * Returns SVG representation of a shadow - * @param {fabric.Object} object - * @return {String} SVG representation of a shadow - */ - toSVG: function(object) { - var fBoxX = 40, fBoxY = 40, NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS, - offset = fabric.util.rotateVector( - { x: this.offsetX, y: this.offsetY }, - fabric.util.degreesToRadians(-object.angle)), - BLUR_BOX = 20, color = new fabric.Color(this.color); - - if (object.width && object.height) { - //http://www.w3.org/TR/SVG/filters.html#FilterEffectsRegion - // we add some extra space to filter box to contain the blur ( 20 ) - fBoxX = toFixed((Math.abs(offset.x) + this.blur) / object.width, NUM_FRACTION_DIGITS) * 100 + BLUR_BOX; - fBoxY = toFixed((Math.abs(offset.y) + this.blur) / object.height, NUM_FRACTION_DIGITS) * 100 + BLUR_BOX; - } - if (object.flipX) { - offset.x *= -1; - } - if (object.flipY) { - offset.y *= -1; - } - - return ( - '\n' + - '\t\n' + - '\t\n' + - '\t\n' + - '\t\n' + - '\t\n' + - '\t\t\n' + - '\t\t\n' + - '\t\n' + - '\n'); - }, - /* _TO_SVG_END_ */ - - /** - * Returns object representation of a shadow - * @return {Object} Object representation of a shadow instance - */ - toObject: function() { - if (this.includeDefaultValues) { - return { - color: this.color, - blur: this.blur, - offsetX: this.offsetX, - offsetY: this.offsetY, - affectStroke: this.affectStroke, - nonScaling: this.nonScaling - }; - } - var obj = { }, proto = fabric.Shadow.prototype; + * @typedef {number | 'left' | 'center' | 'right'} OriginX + * @typedef {number | 'top' | 'center' | 'bottom'} OriginY + */ + fabric.util.object.extend(fabric.Object.prototype, + /** @lends fabric.Object.prototype */ { + /** + * Resolves origin value relative to center + * @private + * @param {OriginX} originX + * @returns number + */ + resolveOriginX: function (originX) { + return typeof originX === 'string' + ? originXOffset[originX] + : originX - 0.5; + }, + /** + * Resolves origin value relative to center + * @private + * @param {OriginY} originY + * @returns number + */ + resolveOriginY: function (originY) { + return typeof originY === 'string' + ? originYOffset[originY] + : originY - 0.5; + }, + /** + * Translates the coordinates from a set of origin to another (based on the object's dimensions) + * @param {Point} point The point which corresponds to the originX and originY params + * @param {OriginX} fromOriginX Horizontal origin: 'left', 'center' or 'right' + * @param {OriginY} fromOriginY Vertical origin: 'top', 'center' or 'bottom' + * @param {OriginX} toOriginX Horizontal origin: 'left', 'center' or 'right' + * @param {OriginY} toOriginY Vertical origin: 'top', 'center' or 'bottom' + * @return {Point} + */ + translateToGivenOrigin: function (point, fromOriginX, fromOriginY, toOriginX, toOriginY) { + var x = point.x, y = point.y, dim, offsetX = this.resolveOriginX(toOriginX) - this.resolveOriginX(fromOriginX), offsetY = this.resolveOriginY(toOriginY) - this.resolveOriginY(fromOriginY); + if (offsetX || offsetY) { + dim = this._getTransformedDimensions(); + x = point.x + offsetX * dim.x; + y = point.y + offsetY * dim.y; + } + return new Point(x, y); + }, + /** + * Translates the coordinates from origin to center coordinates (based on the object's dimensions) + * @param {Point} point The point which corresponds to the originX and originY params + * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' + * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {Point} + */ + translateToCenterPoint: function (point, originX, originY) { + var p = this.translateToGivenOrigin(point, originX, originY, 'center', 'center'); + if (this.angle) { + return fabric.util.rotatePoint(p, point, degreesToRadians(this.angle)); + } + return p; + }, + /** + * Translates the coordinates from center to origin coordinates (based on the object's dimensions) + * @param {Point} center The point which corresponds to center of the object + * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' + * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {Point} + */ + translateToOriginPoint: function (center, originX, originY) { + var p = this.translateToGivenOrigin(center, 'center', 'center', originX, originY); + if (this.angle) { + return fabric.util.rotatePoint(p, center, degreesToRadians(this.angle)); + } + return p; + }, + /** + * Returns the center coordinates of the object relative to canvas + * @return {Point} + */ + getCenterPoint: function () { + var relCenter = this.getRelativeCenterPoint(); + return this.group + ? fabric.util.transformPoint(relCenter, this.group.calcTransformMatrix()) + : relCenter; + }, + /** + * Returns the center coordinates of the object relative to it's containing group or null + * @return {Point|null} point or null of object has no parent group + */ + getCenterPointRelativeToParent: function () { + return this.group ? this.getRelativeCenterPoint() : null; + }, + /** + * Returns the center coordinates of the object relative to it's parent + * @return {Point} + */ + getRelativeCenterPoint: function () { + return this.translateToCenterPoint(new Point(this.left, this.top), this.originX, this.originY); + }, + /** + * Returns the coordinates of the object based on center coordinates + * @param {Point} point The point which corresponds to the originX and originY params + * @return {Point} + */ + // getOriginPoint: function(center) { + // return this.translateToOriginPoint(center, this.originX, this.originY); + // }, + /** + * Returns the coordinates of the object as if it has a different origin + * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' + * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {Point} + */ + getPointByOrigin: function (originX, originY) { + var center = this.getRelativeCenterPoint(); + return this.translateToOriginPoint(center, originX, originY); + }, + /** + * Returns the normalized point (rotated relative to center) in local coordinates + * @param {Point} point The point relative to instance coordinate system + * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' + * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {Point} + */ + normalizePoint: function (point, originX, originY) { + var center = this.getRelativeCenterPoint(), p, p2; + if (typeof originX !== 'undefined' && typeof originY !== 'undefined') { + p = this.translateToGivenOrigin(center, 'center', 'center', originX, originY); + } + else { + p = new Point(this.left, this.top); + } + p2 = new Point(point.x, point.y); + if (this.angle) { + p2 = fabric.util.rotatePoint(p2, center, -degreesToRadians(this.angle)); + } + return p2.subtract(p); + }, + /** + * Returns coordinates of a pointer relative to object's top left corner in object's plane + * @param {Event} e Event to operate upon + * @param {Object} [pointer] Pointer to operate upon (instead of event) + * @return {Object} Coordinates of a pointer (x, y) + */ + getLocalPointer: function (e, pointer) { + pointer = pointer || this.canvas.getPointer(e); + return fabric.util + .transformPoint(new Point(pointer.x, pointer.y), fabric.util.invertTransform(this.calcTransformMatrix())) + .add(new Point(this.width / 2, this.height / 2)); + }, + /** + * Returns the point in global coordinates + * @param {Point} The point relative to the local coordinate system + * @return {Point} + */ + // toGlobalPoint: function(point) { + // return fabric.util.rotatePoint(point, this.getCenterPoint(), degreesToRadians(this.angle)).add(new Point(this.left, this.top)); + // }, + /** + * Sets the position of the object taking into consideration the object's origin + * @param {Point} pos The new position of the object + * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' + * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {void} + */ + setPositionByOrigin: function (pos, originX, originY) { + var center = this.translateToCenterPoint(pos, originX, originY), position = this.translateToOriginPoint(center, this.originX, this.originY); + this.set('left', position.x); + this.set('top', position.y); + }, + /** + * @param {String} to One of 'left', 'center', 'right' + */ + adjustPosition: function (to) { + var angle = degreesToRadians(this.angle), hypotFull = this.getScaledWidth(), xFull = fabric.util.cos(angle) * hypotFull, yFull = fabric.util.sin(angle) * hypotFull, offsetFrom, offsetTo; + //TODO: this function does not consider mixed situation like top, center. + if (typeof this.originX === 'string') { + offsetFrom = originXOffset[this.originX]; + } + else { + offsetFrom = this.originX - 0.5; + } + if (typeof to === 'string') { + offsetTo = originXOffset[to]; + } + else { + offsetTo = to - 0.5; + } + this.left += xFull * (offsetTo - offsetFrom); + this.top += yFull * (offsetTo - offsetFrom); + this.setCoords(); + this.originX = to; + }, + /** + * Sets the origin/position of the object to it's center point + * @private + * @return {void} + */ + _setOriginToCenter: function () { + this._originalOriginX = this.originX; + this._originalOriginY = this.originY; + var center = this.getRelativeCenterPoint(); + this.originX = 'center'; + this.originY = 'center'; + this.left = center.x; + this.top = center.y; + }, + /** + * Resets the origin/position of the object to it's original origin + * @private + * @return {void} + */ + _resetOrigin: function () { + var originPoint = this.translateToOriginPoint(this.getRelativeCenterPoint(), this._originalOriginX, this._originalOriginY); + this.originX = this._originalOriginX; + this.originY = this._originalOriginY; + this.left = originPoint.x; + this.top = originPoint.y; + this._originalOriginX = null; + this._originalOriginY = null; + }, + /** + * @private + */ + _getLeftTopCoords: function () { + return this.translateToOriginPoint(this.getRelativeCenterPoint(), 'left', 'top'); + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + function arrayFromCoords(coords) { + return [ + new Point(coords.tl.x, coords.tl.y), + new Point(coords.tr.x, coords.tr.y), + new Point(coords.br.x, coords.br.y), + new Point(coords.bl.x, coords.bl.y), + ]; + } + var fabric = global.fabric, util = fabric.util, degreesToRadians = util.degreesToRadians, multiplyMatrices = util.multiplyTransformMatrices, transformPoint = util.transformPoint; + util.object.extend(fabric.Object.prototype, + /** @lends fabric.Object.prototype */ { + /** + * Describe object's corner position in canvas element coordinates. + * properties are depending on control keys and padding the main controls. + * each property is an object with x, y and corner. + * The `corner` property contains in a similar manner the 4 points of the + * interactive area of the corner. + * The coordinates depends from the controls positionHandler and are used + * to draw and locate controls + * @memberOf fabric.Object.prototype + */ + oCoords: null, + /** + * Describe object's corner position in canvas object absolute coordinates + * properties are tl,tr,bl,br and describe the four main corner. + * each property is an object with x, y, instance of Fabric.Point. + * The coordinates depends from this properties: width, height, scaleX, scaleY + * skewX, skewY, angle, strokeWidth, top, left. + * Those coordinates are useful to understand where an object is. They get updated + * with oCoords but they do not need to be updated when zoom or panning change. + * The coordinates get updated with @method setCoords. + * You can calculate them without updating with @method calcACoords(); + * @memberOf fabric.Object.prototype + */ + aCoords: null, + /** + * Describe object's corner position in canvas element coordinates. + * includes padding. Used of object detection. + * set and refreshed with setCoords. + * @memberOf fabric.Object.prototype + */ + lineCoords: null, + /** + * storage for object transform matrix + */ + ownMatrixCache: null, + /** + * storage for object full transform matrix + */ + matrixCache: null, + /** + * custom controls interface + * controls are added by default_controls.js + */ + controls: {}, + /** + * @returns {number} x position according to object's {@link fabric.Object#originX} property in canvas coordinate plane + */ + getX: function () { + return this.getXY().x; + }, + /** + * @param {number} value x position according to object's {@link fabric.Object#originX} property in canvas coordinate plane + */ + setX: function (value) { + this.setXY(this.getXY().setX(value)); + }, + /** + * @returns {number} x position according to object's {@link fabric.Object#originX} property in parent's coordinate plane\ + * if parent is canvas then this property is identical to {@link fabric.Object#getX} + */ + getRelativeX: function () { + return this.left; + }, + /** + * @param {number} value x position according to object's {@link fabric.Object#originX} property in parent's coordinate plane\ + * if parent is canvas then this method is identical to {@link fabric.Object#setX} + */ + setRelativeX: function (value) { + this.left = value; + }, + /** + * @returns {number} y position according to object's {@link fabric.Object#originY} property in canvas coordinate plane + */ + getY: function () { + return this.getXY().y; + }, + /** + * @param {number} value y position according to object's {@link fabric.Object#originY} property in canvas coordinate plane + */ + setY: function (value) { + this.setXY(this.getXY().setY(value)); + }, + /** + * @returns {number} y position according to object's {@link fabric.Object#originY} property in parent's coordinate plane\ + * if parent is canvas then this property is identical to {@link fabric.Object#getY} + */ + getRelativeY: function () { + return this.top; + }, + /** + * @param {number} value y position according to object's {@link fabric.Object#originY} property in parent's coordinate plane\ + * if parent is canvas then this property is identical to {@link fabric.Object#setY} + */ + setRelativeY: function (value) { + this.top = value; + }, + /** + * @returns {number} x position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in canvas coordinate plane + */ + getXY: function () { + var relativePosition = this.getRelativeXY(); + return this.group + ? fabric.util.transformPoint(relativePosition, this.group.calcTransformMatrix()) + : relativePosition; + }, + /** + * Set an object position to a particular point, the point is intended in absolute ( canvas ) coordinate. + * You can specify {@link fabric.Object#originX} and {@link fabric.Object#originY} values, + * that otherwise are the object's current values. + * @example Set object's bottom left corner to point (5,5) on canvas + * object.setXY(new Point(5, 5), 'left', 'bottom'). + * @param {Point} point position in canvas coordinate plane + * @param {'left'|'center'|'right'|number} [originX] Horizontal origin: 'left', 'center' or 'right' + * @param {'top'|'center'|'bottom'|number} [originY] Vertical origin: 'top', 'center' or 'bottom' + */ + setXY: function (point, originX, originY) { + if (this.group) { + point = fabric.util.transformPoint(point, fabric.util.invertTransform(this.group.calcTransformMatrix())); + } + this.setRelativeXY(point, originX, originY); + }, + /** + * @returns {number} x position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in parent's coordinate plane + */ + getRelativeXY: function () { + return new Point(this.left, this.top); + }, + /** + * As {@link fabric.Object#setXY}, but in current parent's coordinate plane ( the current group if any or the canvas) + * @param {Point} point position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in parent's coordinate plane + * @param {'left'|'center'|'right'|number} [originX] Horizontal origin: 'left', 'center' or 'right' + * @param {'top'|'center'|'bottom'|number} [originY] Vertical origin: 'top', 'center' or 'bottom' + */ + setRelativeXY: function (point, originX, originY) { + this.setPositionByOrigin(point, originX || this.originX, originY || this.originY); + }, + /** + * return correct set of coordinates for intersection + * this will return either aCoords or lineCoords. + * @param {Boolean} absolute will return aCoords if true or lineCoords + * @return {Object} {tl, tr, br, bl} points + */ + _getCoords: function (absolute, calculate) { + if (calculate) { + return absolute ? this.calcACoords() : this.calcLineCoords(); + } + if (!this.aCoords || !this.lineCoords) { + this.setCoords(true); + } + return absolute ? this.aCoords : this.lineCoords; + }, + /** + * return correct set of coordinates for intersection + * this will return either aCoords or lineCoords. + * The coords are returned in an array. + * @return {Array} [tl, tr, br, bl] of points + */ + getCoords: function (absolute, calculate) { + var coords = arrayFromCoords(this._getCoords(absolute, calculate)); + if (this.group) { + var t = this.group.calcTransformMatrix(); + return coords.map(function (p) { + return util.transformPoint(p, t); + }); + } + return coords; + }, + /** + * Checks if object intersects with an area formed by 2 points + * @param {Object} pointTL top-left point of area + * @param {Object} pointBR bottom-right point of area + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object intersects with an area formed by 2 points + */ + intersectsWithRect: function (pointTL, pointBR, absolute, calculate) { + var coords = this.getCoords(absolute, calculate), intersection = fabric.Intersection.intersectPolygonRectangle(coords, pointTL, pointBR); + return intersection.status === 'Intersection'; + }, + /** + * Checks if object intersects with another object + * @param {Object} other Object to test + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object intersects with another object + */ + intersectsWithObject: function (other, absolute, calculate) { + var intersection = Intersection.intersectPolygonPolygon(this.getCoords(absolute, calculate), other.getCoords(absolute, calculate)); + return (intersection.status === 'Intersection' || + intersection.status === 'Coincident' || + other.isContainedWithinObject(this, absolute, calculate) || + this.isContainedWithinObject(other, absolute, calculate)); + }, + /** + * Checks if object is fully contained within area of another object + * @param {Object} other Object to test + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object is fully contained within area of another object + */ + isContainedWithinObject: function (other, absolute, calculate) { + var points = this.getCoords(absolute, calculate), otherCoords = absolute ? other.aCoords : other.lineCoords, i = 0, lines = other._getImageLines(otherCoords); + for (; i < 4; i++) { + if (!other.containsPoint(points[i], lines)) { + return false; + } + } + return true; + }, + /** + * Checks if object is fully contained within area formed by 2 points + * @param {Object} pointTL top-left point of area + * @param {Object} pointBR bottom-right point of area + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object is fully contained within area formed by 2 points + */ + isContainedWithinRect: function (pointTL, pointBR, absolute, calculate) { + var boundingRect = this.getBoundingRect(absolute, calculate); + return (boundingRect.left >= pointTL.x && + boundingRect.left + boundingRect.width <= pointBR.x && + boundingRect.top >= pointTL.y && + boundingRect.top + boundingRect.height <= pointBR.y); + }, + /** + * Checks if point is inside the object + * @param {Point} point Point to check against + * @param {Object} [lines] object returned from @method _getImageLines + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if point is inside the object + */ + containsPoint: function (point, lines, absolute, calculate) { + var coords = this._getCoords(absolute, calculate), lines = lines || this._getImageLines(coords), xPoints = this._findCrossPoints(point, lines); + // if xPoints is odd then point is inside the object + return xPoints !== 0 && xPoints % 2 === 1; + }, + /** + * Checks if object is contained within the canvas with current viewportTransform + * the check is done stopping at first point that appears on screen + * @param {Boolean} [calculate] use coordinates of current position instead of .aCoords + * @return {Boolean} true if object is fully or partially contained within canvas + */ + isOnScreen: function (calculate) { + if (!this.canvas) { + return false; + } + var pointTL = this.canvas.vptCoords.tl, pointBR = this.canvas.vptCoords.br; + var points = this.getCoords(true, calculate); + // if some point is on screen, the object is on screen. + if (points.some(function (point) { + return (point.x <= pointBR.x && + point.x >= pointTL.x && + point.y <= pointBR.y && + point.y >= pointTL.y); + })) { + return true; + } + // no points on screen, check intersection with absolute coordinates + if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) { + return true; + } + return this._containsCenterOfCanvas(pointTL, pointBR, calculate); + }, + /** + * Checks if the object contains the midpoint between canvas extremities + * Does not make sense outside the context of isOnScreen and isPartiallyOnScreen + * @private + * @param {Fabric.Point} pointTL Top Left point + * @param {Fabric.Point} pointBR Top Right point + * @param {Boolean} calculate use coordinates of current position instead of .oCoords + * @return {Boolean} true if the object contains the point + */ + _containsCenterOfCanvas: function (pointTL, pointBR, calculate) { + // worst case scenario the object is so big that contains the screen + var centerPoint = { + x: (pointTL.x + pointBR.x) / 2, + y: (pointTL.y + pointBR.y) / 2, + }; + if (this.containsPoint(centerPoint, null, true, calculate)) { + return true; + } + return false; + }, + /** + * Checks if object is partially contained within the canvas with current viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object is partially contained within canvas + */ + isPartiallyOnScreen: function (calculate) { + if (!this.canvas) { + return false; + } + var pointTL = this.canvas.vptCoords.tl, pointBR = this.canvas.vptCoords.br; + if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) { + return true; + } + var allPointsAreOutside = this.getCoords(true, calculate).every(function (point) { + return ((point.x >= pointBR.x || point.x <= pointTL.x) && + (point.y >= pointBR.y || point.y <= pointTL.y)); + }); + return (allPointsAreOutside && + this._containsCenterOfCanvas(pointTL, pointBR, calculate)); + }, + /** + * Method that returns an object with the object edges in it, given the coordinates of the corners + * @private + * @param {Object} oCoords Coordinates of the object corners + */ + _getImageLines: function (oCoords) { + var lines = { + topline: { + o: oCoords.tl, + d: oCoords.tr, + }, + rightline: { + o: oCoords.tr, + d: oCoords.br, + }, + bottomline: { + o: oCoords.br, + d: oCoords.bl, + }, + leftline: { + o: oCoords.bl, + d: oCoords.tl, + }, + }; + // // debugging + // if (this.canvas.contextTop) { + // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2); + // } + return lines; + }, + /** + * Helper method to determine how many cross points are between the 4 object edges + * and the horizontal line determined by a point on canvas + * @private + * @param {Point} point Point to check + * @param {Object} lines Coordinates of the object being evaluated + */ + // remove yi, not used but left code here just in case. + _findCrossPoints: function (point, lines) { + var b1, b2, a1, a2, xi, // yi, + xcount = 0, iLine; + for (var lineKey in lines) { + iLine = lines[lineKey]; + // optimisation 1: line below point. no cross + if (iLine.o.y < point.y && iLine.d.y < point.y) { + continue; + } + // optimisation 2: line above point. no cross + if (iLine.o.y >= point.y && iLine.d.y >= point.y) { + continue; + } + // optimisation 3: vertical line case + if (iLine.o.x === iLine.d.x && iLine.o.x >= point.x) { + xi = iLine.o.x; + // yi = point.y; + } + // calculate the intersection point + else { + b1 = 0; + b2 = (iLine.d.y - iLine.o.y) / (iLine.d.x - iLine.o.x); + a1 = point.y - b1 * point.x; + a2 = iLine.o.y - b2 * iLine.o.x; + xi = -(a1 - a2) / (b1 - b2); + // yi = a1 + b1 * xi; + } + // dont count xi < point.x cases + if (xi >= point.x) { + xcount += 1; + } + // optimisation 4: specific for square images + if (xcount === 2) { + break; + } + } + return xcount; + }, + /** + * Returns coordinates of object's bounding rectangle (left, top, width, height) + * the box is intended as aligned to axis of canvas. + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords / .aCoords + * @return {Object} Object with left, top, width, height properties + */ + getBoundingRect: function (absolute, calculate) { + var coords = this.getCoords(absolute, calculate); + return util.makeBoundingBoxFromPoints(coords); + }, + /** + * Returns width of an object's bounding box counting transformations + * before 2.0 it was named getWidth(); + * @return {Number} width value + */ + getScaledWidth: function () { + return this._getTransformedDimensions().x; + }, + /** + * Returns height of an object bounding box counting transformations + * before 2.0 it was named getHeight(); + * @return {Number} height value + */ + getScaledHeight: function () { + return this._getTransformedDimensions().y; + }, + /** + * Makes sure the scale is valid and modifies it if necessary + * @private + * @param {Number} value + * @return {Number} + */ + _constrainScale: function (value) { + if (Math.abs(value) < this.minScaleLimit) { + if (value < 0) { + return -this.minScaleLimit; + } + else { + return this.minScaleLimit; + } + } + else if (value === 0) { + return 0.0001; + } + return value; + }, + /** + * Scales an object (equally by x and y) + * @param {Number} value Scale factor + * @return {fabric.Object} thisArg + * @chainable + */ + scale: function (value) { + this._set('scaleX', value); + this._set('scaleY', value); + return this.setCoords(); + }, + /** + * Scales an object to a given width, with respect to bounding box (scaling by x/y equally) + * @param {Number} value New width value + * @param {Boolean} absolute ignore viewport + * @return {fabric.Object} thisArg + * @chainable + */ + scaleToWidth: function (value, absolute) { + // adjust to bounding rect factor so that rotated shapes would fit as well + var boundingRectFactor = this.getBoundingRect(absolute).width / this.getScaledWidth(); + return this.scale(value / this.width / boundingRectFactor); + }, + /** + * Scales an object to a given height, with respect to bounding box (scaling by x/y equally) + * @param {Number} value New height value + * @param {Boolean} absolute ignore viewport + * @return {fabric.Object} thisArg + * @chainable + */ + scaleToHeight: function (value, absolute) { + // adjust to bounding rect factor so that rotated shapes would fit as well + var boundingRectFactor = this.getBoundingRect(absolute).height / this.getScaledHeight(); + return this.scale(value / this.height / boundingRectFactor); + }, + calcLineCoords: function () { + var vpt = this.getViewportTransform(), padding = this.padding, angle = degreesToRadians(this.getTotalAngle()), cos = util.cos(angle), sin = util.sin(angle), cosP = cos * padding, sinP = sin * padding, cosPSinP = cosP + sinP, cosPMinusSinP = cosP - sinP, aCoords = this.calcACoords(); + var lineCoords = { + tl: transformPoint(aCoords.tl, vpt), + tr: transformPoint(aCoords.tr, vpt), + bl: transformPoint(aCoords.bl, vpt), + br: transformPoint(aCoords.br, vpt), + }; + if (padding) { + lineCoords.tl.x -= cosPMinusSinP; + lineCoords.tl.y -= cosPSinP; + lineCoords.tr.x += cosPSinP; + lineCoords.tr.y -= cosPMinusSinP; + lineCoords.bl.x -= cosPSinP; + lineCoords.bl.y += cosPMinusSinP; + lineCoords.br.x += cosPMinusSinP; + lineCoords.br.y += cosPSinP; + } + return lineCoords; + }, + calcOCoords: function () { + var vpt = this.getViewportTransform(), center = this.getCenterPoint(), tMatrix = [1, 0, 0, 1, center.x, center.y], rMatrix = util.calcRotateMatrix({ + angle: this.getTotalAngle() - (!!this.group && this.flipX ? 180 : 0), + }), positionMatrix = multiplyMatrices(tMatrix, rMatrix), startMatrix = multiplyMatrices(vpt, positionMatrix), finalMatrix = multiplyMatrices(startMatrix, [ + 1 / vpt[0], + 0, + 0, + 1 / vpt[3], + 0, + 0, + ]), transformOptions = this.group + ? fabric.util.qrDecompose(this.calcTransformMatrix()) + : undefined, dim = this._calculateCurrentDimensions(transformOptions), coords = {}; + this.forEachControl(function (control, key, fabricObject) { + coords[key] = control.positionHandler(dim, finalMatrix, fabricObject); + }); + // debug code + /* + var canvas = this.canvas; + setTimeout(function () { + if (!canvas) return; + canvas.contextTop.clearRect(0, 0, 700, 700); + canvas.contextTop.fillStyle = 'green'; + Object.keys(coords).forEach(function(key) { + var control = coords[key]; + canvas.contextTop.fillRect(control.x, control.y, 3, 3); + }); + }, 50); + */ + return coords; + }, + calcACoords: function () { + var rotateMatrix = util.calcRotateMatrix({ angle: this.angle }), center = this.getRelativeCenterPoint(), translateMatrix = [1, 0, 0, 1, center.x, center.y], finalMatrix = multiplyMatrices(translateMatrix, rotateMatrix), dim = this._getTransformedDimensions(), w = dim.x / 2, h = dim.y / 2; + return { + // corners + tl: transformPoint({ x: -w, y: -h }, finalMatrix), + tr: transformPoint({ x: w, y: -h }, finalMatrix), + bl: transformPoint({ x: -w, y: h }, finalMatrix), + br: transformPoint({ x: w, y: h }, finalMatrix), + }; + }, + /** + * Sets corner and controls position coordinates based on current angle, width and height, left and top. + * oCoords are used to find the corners + * aCoords are used to quickly find an object on the canvas + * lineCoords are used to quickly find object during pointer events. + * See {@link https://github.com/fabricjs/fabric.js/wiki/When-to-call-setCoords} and {@link http://fabricjs.com/fabric-gotchas} + * + * @param {Boolean} [skipCorners] skip calculation of oCoords. + * @return {fabric.Object} thisArg + * @chainable + */ + setCoords: function (skipCorners) { + this.aCoords = this.calcACoords(); + // in case we are in a group, for how the inner group target check works, + // lineCoords are exactly aCoords. Since the vpt gets absorbed by the normalized pointer. + this.lineCoords = this.group ? this.aCoords : this.calcLineCoords(); + if (skipCorners) { + return this; + } + // set coordinates of the draggable boxes in the corners used to scale/rotate the image + this.oCoords = this.calcOCoords(); + this._setCornerCoords && this._setCornerCoords(); + return this; + }, + transformMatrixKey: function (skipGroup) { + var sep = '_', prefix = ''; + if (!skipGroup && this.group) { + prefix = this.group.transformMatrixKey(skipGroup) + sep; + } + return (prefix + + this.top + + sep + + this.left + + sep + + this.scaleX + + sep + + this.scaleY + + sep + + this.skewX + + sep + + this.skewY + + sep + + this.angle + + sep + + this.originX + + sep + + this.originY + + sep + + this.width + + sep + + this.height + + sep + + this.strokeWidth + + this.flipX + + this.flipY); + }, + /** + * calculate transform matrix that represents the current transformations from the + * object's properties. + * @param {Boolean} [skipGroup] return transform matrix for object not counting parent transformations + * There are some situation in which this is useful to avoid the fake rotation. + * @return {Array} transform matrix for the object + */ + calcTransformMatrix: function (skipGroup) { + var matrix = this.calcOwnMatrix(); + if (skipGroup || !this.group) { + return matrix; + } + var key = this.transformMatrixKey(skipGroup), cache = this.matrixCache || (this.matrixCache = {}); + if (cache.key === key) { + return cache.value; + } + if (this.group) { + matrix = multiplyMatrices(this.group.calcTransformMatrix(false), matrix); + } + cache.key = key; + cache.value = matrix; + return matrix; + }, + /** + * calculate transform matrix that represents the current transformations from the + * object's properties, this matrix does not include the group transformation + * @return {Array} transform matrix for the object + */ + calcOwnMatrix: function () { + var key = this.transformMatrixKey(true), cache = this.ownMatrixCache || (this.ownMatrixCache = {}); + if (cache.key === key) { + return cache.value; + } + var center = this.getRelativeCenterPoint(), options = { + angle: this.angle, + translateX: center.x, + translateY: center.y, + scaleX: this.scaleX, + scaleY: this.scaleY, + skewX: this.skewX, + skewY: this.skewY, + flipX: this.flipX, + flipY: this.flipY, + }; + cache.key = key; + cache.value = util.composeMatrix(options); + return cache.value; + }, + /** + * Calculate object dimensions from its properties + * @private + * @returns {Point} dimensions + */ + _getNonTransformedDimensions: function () { + return new Point(this.width, this.height).scalarAdd(this.strokeWidth); + }, + /** + * Calculate object bounding box dimensions from its properties scale, skew. + * @param {Object} [options] + * @param {Number} [options.scaleX] + * @param {Number} [options.scaleY] + * @param {Number} [options.skewX] + * @param {Number} [options.skewY] + * @private + * @returns {Point} dimensions + */ + _getTransformedDimensions: function (options) { + options = Object.assign({ + scaleX: this.scaleX, + scaleY: this.scaleY, + skewX: this.skewX, + skewY: this.skewY, + width: this.width, + height: this.height, + strokeWidth: this.strokeWidth, + }, options || {}); + // stroke is applied before/after transformations are applied according to `strokeUniform` + var preScalingStrokeValue, postScalingStrokeValue, strokeWidth = options.strokeWidth; + if (this.strokeUniform) { + preScalingStrokeValue = 0; + postScalingStrokeValue = strokeWidth; + } + else { + preScalingStrokeValue = strokeWidth; + postScalingStrokeValue = 0; + } + var dimX = options.width + preScalingStrokeValue, dimY = options.height + preScalingStrokeValue, finalDimensions, noSkew = options.skewX === 0 && options.skewY === 0; + if (noSkew) { + finalDimensions = new Point(dimX * options.scaleX, dimY * options.scaleY); + } + else { + var bbox = util.sizeAfterTransform(dimX, dimY, options); + finalDimensions = new Point(bbox.x, bbox.y); + } + return finalDimensions.scalarAdd(postScalingStrokeValue); + }, + /** + * Calculate object dimensions for controls box, including padding and canvas zoom. + * and active selection + * @private + * @param {object} [options] transform options + * @returns {Point} dimensions + */ + _calculateCurrentDimensions: function (options) { + var vpt = this.getViewportTransform(), dim = this._getTransformedDimensions(options), p = transformPoint(dim, vpt, true); + return p.scalarAdd(2 * this.padding); + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.Object.prototype, + /** @lends fabric.Object.prototype */ { + /** + * Checks if object is decendant of target + * Should be used instead of @link {fabric.Collection.contains} for performance reasons + * @param {fabric.Object|fabric.StaticCanvas} target + * @returns {boolean} + */ + isDescendantOf: function (target) { + var parent = this.group || this.canvas; + while (parent) { + if (target === parent) { + return true; + } + else if (parent instanceof fabric.StaticCanvas) { + // happens after all parents were traversed through without a match + return false; + } + parent = parent.group || parent.canvas; + } + return false; + }, + /** + * + * @typedef {fabric.Object[] | [...fabric.Object[], fabric.StaticCanvas]} Ancestors + * + * @param {boolean} [strict] returns only ancestors that are objects (without canvas) + * @returns {Ancestors} ancestors from bottom to top + */ + getAncestors: function (strict) { + var ancestors = []; + var parent = this.group || (strict ? undefined : this.canvas); + while (parent) { + ancestors.push(parent); + parent = parent.group || (strict ? undefined : parent.canvas); + } + return ancestors; + }, + /** + * Returns an object that represent the ancestry situation. + * + * @typedef {object} AncestryComparison + * @property {Ancestors} common ancestors of `this` and `other` (may include `this` | `other`) + * @property {Ancestors} fork ancestors that are of `this` only + * @property {Ancestors} otherFork ancestors that are of `other` only + * + * @param {fabric.Object} other + * @param {boolean} [strict] finds only ancestors that are objects (without canvas) + * @returns {AncestryComparison | undefined} + * + */ + findCommonAncestors: function (other, strict) { + if (this === other) { + return { + fork: [], + otherFork: [], + common: [this].concat(this.getAncestors(strict)), + }; + } + else if (!other) { + // meh, warn and inform, and not my issue. + // the argument is NOT optional, we can't end up here. + return undefined; + } + var ancestors = this.getAncestors(strict); + var otherAncestors = other.getAncestors(strict); + // if `this` has no ancestors and `this` is top ancestor of `other` we must handle the following case + if (ancestors.length === 0 && + otherAncestors.length > 0 && + this === otherAncestors[otherAncestors.length - 1]) { + return { + fork: [], + otherFork: [other].concat(otherAncestors.slice(0, otherAncestors.length - 1)), + common: [this], + }; + } + // compare ancestors + for (var i = 0, ancestor; i < ancestors.length; i++) { + ancestor = ancestors[i]; + if (ancestor === other) { + return { + fork: [this].concat(ancestors.slice(0, i)), + otherFork: [], + common: ancestors.slice(i), + }; + } + for (var j = 0; j < otherAncestors.length; j++) { + if (this === otherAncestors[j]) { + return { + fork: [], + otherFork: [other].concat(otherAncestors.slice(0, j)), + common: [this].concat(ancestors), + }; + } + if (ancestor === otherAncestors[j]) { + return { + fork: [this].concat(ancestors.slice(0, i)), + otherFork: [other].concat(otherAncestors.slice(0, j)), + common: ancestors.slice(i), + }; + } + } + } + // nothing shared + return { + fork: [this].concat(ancestors), + otherFork: [other].concat(otherAncestors), + common: [], + }; + }, + /** + * + * @param {fabric.Object} other + * @param {boolean} [strict] checks only ancestors that are objects (without canvas) + * @returns {boolean} + */ + hasCommonAncestors: function (other, strict) { + var commonAncestors = this.findCommonAncestors(other, strict); + return commonAncestors && !!commonAncestors.ancestors.length; + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.Object.prototype, + /** @lends fabric.Object.prototype */ { + /** + * Moves an object to the bottom of the stack of drawn objects + * @return {fabric.Object} thisArg + * @chainable + */ + sendToBack: function () { + if (this.group) { + fabric.StaticCanvas.prototype.sendToBack.call(this.group, this); + } + else if (this.canvas) { + this.canvas.sendToBack(this); + } + return this; + }, + /** + * Moves an object to the top of the stack of drawn objects + * @return {fabric.Object} thisArg + * @chainable + */ + bringToFront: function () { + if (this.group) { + fabric.StaticCanvas.prototype.bringToFront.call(this.group, this); + } + else if (this.canvas) { + this.canvas.bringToFront(this); + } + return this; + }, + /** + * Moves an object down in stack of drawn objects + * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object + * @return {fabric.Object} thisArg + * @chainable + */ + sendBackwards: function (intersecting) { + if (this.group) { + fabric.StaticCanvas.prototype.sendBackwards.call(this.group, this, intersecting); + } + else if (this.canvas) { + this.canvas.sendBackwards(this, intersecting); + } + return this; + }, + /** + * Moves an object up in stack of drawn objects + * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object + * @return {fabric.Object} thisArg + * @chainable + */ + bringForward: function (intersecting) { + if (this.group) { + fabric.StaticCanvas.prototype.bringForward.call(this.group, this, intersecting); + } + else if (this.canvas) { + this.canvas.bringForward(this, intersecting); + } + return this; + }, + /** + * Moves an object to specified level in stack of drawn objects + * @param {Number} index New position of object + * @return {fabric.Object} thisArg + * @chainable + */ + moveTo: function (index) { + if (this.group && this.group.type !== 'activeSelection') { + fabric.StaticCanvas.prototype.moveTo.call(this.group, this, index); + } + else if (this.canvas) { + this.canvas.moveTo(this, index); + } + return this; + }, + /** + * + * @param {fabric.Object} other object to compare against + * @returns {boolean | undefined} if objects do not share a common ancestor or they are strictly equal it is impossible to determine which is in front of the other; in such cases the function returns `undefined` + */ + isInFrontOf: function (other) { + if (this === other) { + return undefined; + } + var ancestorData = this.findCommonAncestors(other); + if (!ancestorData) { + return undefined; + } + if (ancestorData.fork.includes(other)) { + return true; + } + if (ancestorData.otherFork.includes(this)) { + return false; + } + var firstCommonAncestor = ancestorData.common[0]; + if (!firstCommonAncestor) { + return undefined; + } + var headOfFork = ancestorData.fork.pop(), headOfOtherFork = ancestorData.otherFork.pop(), thisIndex = firstCommonAncestor._objects.indexOf(headOfFork), otherIndex = firstCommonAncestor._objects.indexOf(headOfOtherFork); + return thisIndex > -1 && thisIndex > otherIndex; + }, + }); +})(typeof exports !== 'undefined' ? exports : window); - ['color', 'blur', 'offsetX', 'offsetY', 'affectStroke', 'nonScaling'].forEach(function(prop) { - if (this[prop] !== proto[prop]) { - obj[prop] = this[prop]; +//@ts-nocheck +/* _TO_SVG_START_ */ +(function (global) { + var fabric = global.fabric; + function getSvgColorString(prop, value) { + if (!value) { + return prop + ': none; '; + } + else if (value.toLive) { + return prop + ': url(#SVGID_' + value.id + '); '; } - }, this); + else { + var color = new Color(value), str = prop + ': ' + color.toRgb() + '; ', opacity = color.getAlpha(); + if (opacity !== 1) { + //change the color in rgb + opacity + str += prop + '-opacity: ' + opacity.toString() + '; '; + } + return str; + } + } + var toFixed = (fabric = global.fabric), toFixed = fabric.util.toFixed; + fabric.util.object.extend(fabric.Object.prototype, + /** @lends fabric.Object.prototype */ { + /** + * Returns styles-string for svg-export + * @param {Boolean} skipShadow a boolean to skip shadow filter output + * @return {String} + */ + getSvgStyles: function (skipShadow) { + var fillRule = this.fillRule ? this.fillRule : 'nonzero', strokeWidth = this.strokeWidth ? this.strokeWidth : '0', strokeDashArray = this.strokeDashArray + ? this.strokeDashArray.join(' ') + : 'none', strokeDashOffset = this.strokeDashOffset + ? this.strokeDashOffset + : '0', strokeLineCap = this.strokeLineCap ? this.strokeLineCap : 'butt', strokeLineJoin = this.strokeLineJoin ? this.strokeLineJoin : 'miter', strokeMiterLimit = this.strokeMiterLimit + ? this.strokeMiterLimit + : '4', opacity = typeof this.opacity !== 'undefined' ? this.opacity : '1', visibility = this.visible ? '' : ' visibility: hidden;', filter = skipShadow ? '' : this.getSvgFilter(), fill = getSvgColorString('fill', this.fill), stroke = getSvgColorString('stroke', this.stroke); + return [ + stroke, + 'stroke-width: ', + strokeWidth, + '; ', + 'stroke-dasharray: ', + strokeDashArray, + '; ', + 'stroke-linecap: ', + strokeLineCap, + '; ', + 'stroke-dashoffset: ', + strokeDashOffset, + '; ', + 'stroke-linejoin: ', + strokeLineJoin, + '; ', + 'stroke-miterlimit: ', + strokeMiterLimit, + '; ', + fill, + 'fill-rule: ', + fillRule, + '; ', + 'opacity: ', + opacity, + ';', + filter, + visibility, + ].join(''); + }, + /** + * Returns styles-string for svg-export + * @param {Object} style the object from which to retrieve style properties + * @param {Boolean} useWhiteSpace a boolean to include an additional attribute in the style. + * @return {String} + */ + getSvgSpanStyles: function (style, useWhiteSpace) { + var term = '; '; + var fontFamily = style.fontFamily + ? 'font-family: ' + + (style.fontFamily.indexOf("'") === -1 && + style.fontFamily.indexOf('"') === -1 + ? "'" + style.fontFamily + "'" + : style.fontFamily) + + term + : ''; + var strokeWidth = style.strokeWidth + ? 'stroke-width: ' + style.strokeWidth + term + : '', fontFamily = fontFamily, fontSize = style.fontSize + ? 'font-size: ' + style.fontSize + 'px' + term + : '', fontStyle = style.fontStyle + ? 'font-style: ' + style.fontStyle + term + : '', fontWeight = style.fontWeight + ? 'font-weight: ' + style.fontWeight + term + : '', fill = style.fill ? getSvgColorString('fill', style.fill) : '', stroke = style.stroke + ? getSvgColorString('stroke', style.stroke) + : '', textDecoration = this.getSvgTextDecoration(style), deltaY = style.deltaY + ? 'baseline-shift: ' + -style.deltaY + '; ' + : ''; + if (textDecoration) { + textDecoration = 'text-decoration: ' + textDecoration + term; + } + return [ + stroke, + strokeWidth, + fontFamily, + fontSize, + fontStyle, + fontWeight, + textDecoration, + fill, + deltaY, + useWhiteSpace ? 'white-space: pre; ' : '', + ].join(''); + }, + /** + * Returns text-decoration property for svg-export + * @param {Object} style the object from which to retrieve style properties + * @return {String} + */ + getSvgTextDecoration: function (style) { + return ['overline', 'underline', 'line-through'] + .filter(function (decoration) { + return style[decoration.replace('-', '')]; + }) + .join(' '); + }, + /** + * Returns filter for svg shadow + * @return {String} + */ + getSvgFilter: function () { + return this.shadow ? 'filter: url(#SVGID_' + this.shadow.id + ');' : ''; + }, + /** + * Returns id attribute for svg output + * @return {String} + */ + getSvgCommons: function () { + return [ + this.id ? 'id="' + this.id + '" ' : '', + this.clipPath + ? 'clip-path="url(#' + this.clipPath.clipPathId + ')" ' + : '', + ].join(''); + }, + /** + * Returns transform-string for svg-export + * @param {Boolean} use the full transform or the single object one. + * @return {String} + */ + getSvgTransform: function (full, additionalTransform) { + var transform = full + ? this.calcTransformMatrix() + : this.calcOwnMatrix(), svgTransform = 'transform="' + fabric.util.matrixToSVG(transform); + return svgTransform + (additionalTransform || '') + '" '; + }, + _setSVGBg: function (textBgRects) { + if (this.backgroundColor) { + var NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; + textBgRects.push('\t\t\n'); + } + }, + /** + * Returns svg representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toSVG: function (reviver) { + return this._createBaseSVGMarkup(this._toSVG(reviver), { + reviver: reviver, + }); + }, + /** + * Returns svg clipPath representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toClipPathSVG: function (reviver) { + return ('\t' + + this._createBaseClipPathSVGMarkup(this._toSVG(reviver), { + reviver: reviver, + })); + }, + /** + * @private + */ + _createBaseClipPathSVGMarkup: function (objectMarkup, options) { + options = options || {}; + var reviver = options.reviver, additionalTransform = options.additionalTransform || '', commonPieces = [ + this.getSvgTransform(true, additionalTransform), + this.getSvgCommons(), + ].join(''), + // insert commons in the markup, style and svgCommons + index = objectMarkup.indexOf('COMMON_PARTS'); + objectMarkup[index] = commonPieces; + return reviver ? reviver(objectMarkup.join('')) : objectMarkup.join(''); + }, + /** + * @private + */ + _createBaseSVGMarkup: function (objectMarkup, options) { + options = options || {}; + var noStyle = options.noStyle, reviver = options.reviver, styleInfo = noStyle ? '' : 'style="' + this.getSvgStyles() + '" ', shadowInfo = options.withShadow + ? 'style="' + this.getSvgFilter() + '" ' + : '', clipPath = this.clipPath, vectorEffect = this.strokeUniform + ? 'vector-effect="non-scaling-stroke" ' + : '', absoluteClipPath = clipPath && clipPath.absolutePositioned, stroke = this.stroke, fill = this.fill, shadow = this.shadow, commonPieces, markup = [], clipPathMarkup, + // insert commons in the markup, style and svgCommons + index = objectMarkup.indexOf('COMMON_PARTS'), additionalTransform = options.additionalTransform; + if (clipPath) { + clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++; + clipPathMarkup = + '\n' + + clipPath.toClipPathSVG(reviver) + + '\n'; + } + if (absoluteClipPath) { + markup.push('\n'); + } + markup.push('\n'); + commonPieces = [ + styleInfo, + vectorEffect, + noStyle ? '' : this.addPaintOrder(), + ' ', + additionalTransform ? 'transform="' + additionalTransform + '" ' : '', + ].join(''); + objectMarkup[index] = commonPieces; + if (fill && fill.toLive) { + markup.push(fill.toSVG(this)); + } + if (stroke && stroke.toLive) { + markup.push(stroke.toSVG(this)); + } + if (shadow) { + markup.push(shadow.toSVG(this)); + } + if (clipPath) { + markup.push(clipPathMarkup); + } + markup.push(objectMarkup.join('')); + markup.push('\n'); + absoluteClipPath && markup.push('\n'); + return reviver ? reviver(markup.join('')) : markup.join(''); + }, + addPaintOrder: function () { + return this.paintFirst !== 'fill' + ? ' paint-order="' + this.paintFirst + '" ' + : ''; + }, + }); +})(typeof exports !== 'undefined' ? exports : window); +/* _TO_SVG_END_ */ - return obj; +//@ts-nocheck +(function (global) { + var fabric = global.fabric, extend = fabric.util.object.extend, originalSet = 'stateProperties'; + /* + Depends on `stateProperties` + */ + function saveProps(origin, destination, props) { + var tmpObj = {}, deep = true; + props.forEach(function (prop) { + tmpObj[prop] = origin[prop]; + }); + extend(origin[destination], tmpObj, deep); } - }); - - /** - * Regex matching shadow offsetX, offsetY and blur (ex: "2px 2px 10px rgba(0,0,0,0.2)", "rgb(0,255,0) 2px 2px") - * @static - * @field - * @memberOf fabric.Shadow - */ - // eslint-disable-next-line max-len - fabric.Shadow.reOffsetsAndBlur = /(?:\s|^)(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(\d+(?:\.\d*)?(?:px)?)?(?:\s?|$)(?:$|\s)/; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function () { - - 'use strict'; - - if (fabric.StaticCanvas) { - fabric.warn('fabric.StaticCanvas is already defined.'); - return; - } - - // aliases for faster resolution - var extend = fabric.util.object.extend, - getElementOffset = fabric.util.getElementOffset, - removeFromArray = fabric.util.removeFromArray, - toFixed = fabric.util.toFixed, - transformPoint = fabric.util.transformPoint, - invertTransform = fabric.util.invertTransform, - getNodeCanvas = fabric.util.getNodeCanvas, - createCanvasElement = fabric.util.createCanvasElement, - - CANVAS_INIT_ERROR = new Error('Could not initialize `canvas` element'); - - /** - * Static canvas class - * @class fabric.StaticCanvas - * @mixes fabric.Collection - * @mixes fabric.Observable - * @see {@link http://fabricjs.com/static_canvas|StaticCanvas demo} - * @see {@link fabric.StaticCanvas#initialize} for constructor definition - * @fires before:render - * @fires after:render - * @fires canvas:cleared - * @fires object:added - * @fires object:removed - */ - fabric.StaticCanvas = fabric.util.createClass(fabric.CommonMethods, /** @lends fabric.StaticCanvas.prototype */ { - - /** - * Constructor - * @param {HTMLElement | String} el <canvas> element to initialize instance on - * @param {Object} [options] Options object - * @return {Object} thisArg - */ - initialize: function(el, options) { - options || (options = { }); - this.renderAndResetBound = this.renderAndReset.bind(this); - this.requestRenderAllBound = this.requestRenderAll.bind(this); - this._initStatic(el, options); - }, - - /** - * Background color of canvas instance. - * Should be set via {@link fabric.StaticCanvas#setBackgroundColor}. - * @type {(String|fabric.Pattern)} - * @default - */ - backgroundColor: '', - - /** - * Background image of canvas instance. - * since 2.4.0 image caching is active, please when putting an image as background, add to the - * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom - * vale. As an alternative you can disable image objectCaching - * @type fabric.Image - * @default - */ - backgroundImage: null, - - /** - * Overlay color of canvas instance. - * Should be set via {@link fabric.StaticCanvas#setOverlayColor} - * @since 1.3.9 - * @type {(String|fabric.Pattern)} - * @default - */ - overlayColor: '', - - /** - * Overlay image of canvas instance. - * since 2.4.0 image caching is active, please when putting an image as overlay, add to the - * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom - * vale. As an alternative you can disable image objectCaching - * @type fabric.Image - * @default - */ - overlayImage: null, - - /** - * Indicates whether toObject/toDatalessObject should include default values - * if set to false, takes precedence over the object value. - * @type Boolean - * @default - */ - includeDefaultValues: true, - - /** - * Indicates whether objects' state should be saved - * @type Boolean - * @default - */ - stateful: false, - - /** - * Indicates whether {@link fabric.Collection.add}, {@link fabric.Collection.insertAt} and {@link fabric.Collection.remove}, - * {@link fabric.StaticCanvas.moveTo}, {@link fabric.StaticCanvas.clear} and many more, should also re-render canvas. - * Disabling this option will not give a performance boost when adding/removing a lot of objects to/from canvas at once - * since the renders are quequed and executed one per frame. - * Disabling is suggested anyway and managing the renders of the app manually is not a big effort ( canvas.requestRenderAll() ) - * Left default to true to do not break documentation and old app, fiddles. - * @type Boolean - * @default - */ - renderOnAddRemove: true, - - /** - * Indicates whether object controls (borders/controls) are rendered above overlay image - * @type Boolean - * @default - */ - controlsAboveOverlay: false, - + function _isEqual(origValue, currentValue, firstPass) { + if (origValue === currentValue) { + // if the objects are identical, return + return true; + } + else if (Array.isArray(origValue)) { + if (!Array.isArray(currentValue) || + origValue.length !== currentValue.length) { + return false; + } + for (var i = 0, len = origValue.length; i < len; i++) { + if (!_isEqual(origValue[i], currentValue[i])) { + return false; + } + } + return true; + } + else if (origValue && typeof origValue === 'object') { + var keys = Object.keys(origValue), key; + if (!currentValue || + typeof currentValue !== 'object' || + (!firstPass && keys.length !== Object.keys(currentValue).length)) { + return false; + } + for (var i = 0, len = keys.length; i < len; i++) { + key = keys[i]; + // since clipPath is in the statefull cache list and the clipPath objects + // would be iterated as an object, this would lead to possible infinite recursion + // we do not want to compare those. + if (key === 'canvas' || key === 'group') { + continue; + } + if (!_isEqual(origValue[key], currentValue[key])) { + return false; + } + } + return true; + } + } + fabric.util.object.extend(fabric.Object.prototype, + /** @lends fabric.Object.prototype */ { + /** + * Returns true if object state (one of its state properties) was changed + * @param {String} [propertySet] optional name for the set of property we want to save + * @return {Boolean} true if instance' state has changed since `{@link fabric.Object#saveState}` was called + */ + hasStateChanged: function (propertySet) { + propertySet = propertySet || originalSet; + var dashedPropertySet = '_' + propertySet; + if (Object.keys(this[dashedPropertySet]).length < this[propertySet].length) { + return true; + } + return !_isEqual(this[dashedPropertySet], this, true); + }, + /** + * Saves state of an object + * @param {Object} [options] Object with additional `stateProperties` array to include when saving state + * @return {fabric.Object} thisArg + */ + saveState: function (options) { + var propertySet = (options && options.propertySet) || originalSet, destination = '_' + propertySet; + if (!this[destination]) { + return this.setupState(options); + } + saveProps(this, destination, this[propertySet]); + if (options && options.stateProperties) { + saveProps(this, destination, options.stateProperties); + } + return this; + }, + /** + * Setups state of an object + * @param {Object} [options] Object with additional `stateProperties` array to include when saving state + * @return {fabric.Object} thisArg + */ + setupState: function (options) { + options = options || {}; + var propertySet = options.propertySet || originalSet; + options.propertySet = propertySet; + this['_' + propertySet] = {}; + this.saveState(options); + return this; + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric, degreesToRadians = fabric.util.degreesToRadians; + fabric.util.object.extend(fabric.Object.prototype, + /** @lends fabric.Object.prototype */ { + /** + * Determines which corner has been clicked + * @private + * @param {Object} pointer The pointer indicating the mouse position + * @return {String|Boolean} corner code (tl, tr, bl, br, etc.), or false if nothing is found + */ + _findTargetCorner: function (pointer, forTouch) { + if (!this.hasControls || + !this.canvas || + this.canvas._activeObject !== this) { + return false; + } + var xPoints, lines, keys = Object.keys(this.oCoords), j = keys.length - 1, i; + this.__corner = 0; + // cycle in reverse order so we pick first the one on top + for (; j >= 0; j--) { + i = keys[j]; + if (!this.isControlVisible(i)) { + continue; + } + lines = this._getImageLines(forTouch ? this.oCoords[i].touchCorner : this.oCoords[i].corner); + // // debugging + // + // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2); + xPoints = this._findCrossPoints(pointer, lines); + if (xPoints !== 0 && xPoints % 2 === 1) { + this.__corner = i; + return i; + } + } + return false; + }, + /** + * Calls a function for each control. The function gets called, + * with the control, the object that is calling the iterator and the control's key + * @param {Function} fn function to iterate over the controls over + */ + forEachControl: function (fn) { + for (var i in this.controls) { + fn(this.controls[i], i, this); + } + }, + /** + * Sets the coordinates of the draggable boxes in the corners of + * the image used to scale/rotate it. + * note: if we would switch to ROUND corner area, all of this would disappear. + * everything would resolve to a single point and a pythagorean theorem for the distance + * @private + */ + _setCornerCoords: function () { + var coords = this.oCoords; + for (var control in coords) { + var controlObject = this.controls[control]; + coords[control].corner = controlObject.calcCornerCoords(this.angle, this.cornerSize, coords[control].x, coords[control].y, false); + coords[control].touchCorner = controlObject.calcCornerCoords(this.angle, this.touchCornerSize, coords[control].x, coords[control].y, true); + } + }, + /** + * Draws a colored layer behind the object, inside its selection borders. + * Requires public options: padding, selectionBackgroundColor + * this function is called when the context is transformed + * has checks to be skipped when the object is on a staticCanvas + * @param {CanvasRenderingContext2D} ctx Context to draw on + * @return {fabric.Object} thisArg + * @chainable + */ + drawSelectionBackground: function (ctx) { + if (!this.selectionBackgroundColor || + (this.canvas && !this.canvas.interactive) || + (this.canvas && this.canvas._activeObject !== this)) { + return this; + } + ctx.save(); + var center = this.getRelativeCenterPoint(), wh = this._calculateCurrentDimensions(), vpt = this.canvas.viewportTransform; + ctx.translate(center.x, center.y); + ctx.scale(1 / vpt[0], 1 / vpt[3]); + ctx.rotate(degreesToRadians(this.angle)); + ctx.fillStyle = this.selectionBackgroundColor; + ctx.fillRect(-wh.x / 2, -wh.y / 2, wh.x, wh.y); + ctx.restore(); + return this; + }, + /** + * @public override this function in order to customize the drawing of the control box, e.g. rounded corners, different border style. + * @param {CanvasRenderingContext2D} ctx ctx is rotated and translated so that (0,0) is at object's center + * @param {Point} size the control box size used + */ + strokeBorders: function (ctx, size) { + ctx.strokeRect(-size.x / 2, -size.y / 2, size.x, size.y); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to draw on + * @param {Point} size + * @param {Object} styleOverride object to override the object style + */ + _drawBorders: function (ctx, size, styleOverride) { + var options = Object.assign({ + hasControls: this.hasControls, + borderColor: this.borderColor, + borderDashArray: this.borderDashArray, + }, styleOverride || {}); + ctx.save(); + ctx.strokeStyle = options.borderColor; + this._setLineDash(ctx, options.borderDashArray); + this.strokeBorders(ctx, size); + options.hasControls && this.drawControlsConnectingLines(ctx, size); + ctx.restore(); + }, + /** + * Draws borders of an object's bounding box. + * Requires public properties: width, height + * Requires public options: padding, borderColor + * @param {CanvasRenderingContext2D} ctx Context to draw on + * @param {object} options object representing current object parameters + * @param {Object} [styleOverride] object to override the object style + * @return {fabric.Object} thisArg + * @chainable + */ + drawBorders: function (ctx, options, styleOverride) { + var size; + if ((styleOverride && styleOverride.forActiveSelection) || this.group) { + const bbox = fabric.util.sizeAfterTransform(this.width, this.height, options), stroke = (this.strokeUniform + ? new Point().scalarAdd(this.canvas.getZoom()) + : new Point(options.scaleX, options.scaleY)).scalarMultiply(this.strokeWidth); + size = bbox.add(stroke).scalarAdd(this.borderScaleFactor); + } + else { + size = this._calculateCurrentDimensions().scalarAdd(this.borderScaleFactor); + } + this._drawBorders(ctx, size, styleOverride); + return this; + }, + /** + * Draws lines from a borders of an object's bounding box to controls that have `withConnection` property set. + * Requires public properties: width, height + * Requires public options: padding, borderColor + * @param {CanvasRenderingContext2D} ctx Context to draw on + * @param {number} width object final width + * @param {number} height object final height + * @return {fabric.Object} thisArg + * @chainable + */ + drawControlsConnectingLines: function (ctx, size) { + var shouldStroke = false; + ctx.beginPath(); + this.forEachControl(function (control, key, fabricObject) { + // in this moment, the ctx is centered on the object. + // width and height of the above function are the size of the bbox. + if (control.withConnection && + control.getVisibility(fabricObject, key)) { + // reset movement for each control + shouldStroke = true; + ctx.moveTo(control.x * size.x, control.y * size.y); + ctx.lineTo(control.x * size.x + control.offsetX, control.y * size.y + control.offsetY); + } + }); + shouldStroke && ctx.stroke(); + return this; + }, + /** + * Draws corners of an object's bounding box. + * Requires public properties: width, height + * Requires public options: cornerSize, padding + * @param {CanvasRenderingContext2D} ctx Context to draw on + * @param {Object} styleOverride object to override the object style + * @return {fabric.Object} thisArg + * @chainable + */ + drawControls: function (ctx, styleOverride) { + styleOverride = styleOverride || {}; + ctx.save(); + var retinaScaling = this.canvas.getRetinaScaling(), p; + ctx.setTransform(retinaScaling, 0, 0, retinaScaling, 0, 0); + ctx.strokeStyle = ctx.fillStyle = + styleOverride.cornerColor || this.cornerColor; + if (!this.transparentCorners) { + ctx.strokeStyle = + styleOverride.cornerStrokeColor || this.cornerStrokeColor; + } + this._setLineDash(ctx, styleOverride.cornerDashArray || this.cornerDashArray); + this.setCoords(); + this.forEachControl(function (control, key, fabricObject) { + if (control.getVisibility(fabricObject, key)) { + p = fabricObject.oCoords[key]; + control.render(ctx, p.x, p.y, styleOverride, fabricObject); + } + }); + ctx.restore(); + return this; + }, + /** + * Returns true if the specified control is visible, false otherwise. + * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'. + * @returns {Boolean} true if the specified control is visible, false otherwise + */ + isControlVisible: function (controlKey) { + return (this.controls[controlKey] && + this.controls[controlKey].getVisibility(this, controlKey)); + }, + /** + * Sets the visibility of the specified control. + * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'. + * @param {Boolean} visible true to set the specified control visible, false otherwise + * @return {fabric.Object} thisArg + * @chainable + */ + setControlVisible: function (controlKey, visible) { + if (!this._controlsVisibility) { + this._controlsVisibility = {}; + } + this._controlsVisibility[controlKey] = visible; + return this; + }, + /** + * Sets the visibility state of object controls. + * @param {Object} [options] Options object + * @param {Boolean} [options.bl] true to enable the bottom-left control, false to disable it + * @param {Boolean} [options.br] true to enable the bottom-right control, false to disable it + * @param {Boolean} [options.mb] true to enable the middle-bottom control, false to disable it + * @param {Boolean} [options.ml] true to enable the middle-left control, false to disable it + * @param {Boolean} [options.mr] true to enable the middle-right control, false to disable it + * @param {Boolean} [options.mt] true to enable the middle-top control, false to disable it + * @param {Boolean} [options.tl] true to enable the top-left control, false to disable it + * @param {Boolean} [options.tr] true to enable the top-right control, false to disable it + * @param {Boolean} [options.mtr] true to enable the middle-top-rotate control, false to disable it + * @return {fabric.Object} thisArg + * @chainable + */ + setControlsVisibility: function (options) { + options || (options = {}); + for (var p in options) { + this.setControlVisible(p, options[p]); + } + return this; + }, + /** + * Clears the canvas.contextTop in a specific area that corresponds to the object's bounding box + * that is in the canvas.contextContainer. + * This function is used to clear pieces of contextTop where we render ephemeral effects on top of the object. + * Example: blinking cursror text selection, drag effects. + * // TODO: discuss swapping restoreManually with a renderCallback, but think of async issues + * @param {Boolean} [restoreManually] When true won't restore the context after clear, in order to draw something else. + * @return {CanvasRenderingContext2D|undefined} canvas.contextTop that is either still transformed + * with the object transformMatrix, or restored to neutral transform + */ + clearContextTop: function (restoreManually) { + if (!this.canvas || !this.canvas.contextTop) { + return; + } + var ctx = this.canvas.contextTop, v = this.canvas.viewportTransform; + if (!ctx) { + return; + } + ctx.save(); + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + this.transform(ctx); + // we add 4 pixel, to be sure to do not leave any pixel out + var width = this.width + 4, height = this.height + 4; + ctx.clearRect(-width / 2, -height / 2, width, height); + restoreManually || ctx.restore(); + return ctx; + }, + /** + * This callback function is called every time _discardActiveObject or _setActiveObject + * try to to deselect this object. If the function returns true, the process is cancelled + * @param {Object} [options] options sent from the upper functions + * @param {Event} [options.e] event if the process is generated by an event + */ + onDeselect: function () { + // implemented by sub-classes, as needed. + }, + /** + * This callback function is called every time _discardActiveObject or _setActiveObject + * try to to select this object. If the function returns true, the process is cancelled + * @param {Object} [options] options sent from the upper functions + * @param {Event} [options.e] event if the process is generated by an event + */ + onSelect: function () { + // implemented by sub-classes, as needed. + }, + /** + * Override to customize drag and drop behavior + * @public + * @param {DragEvent} e + * @returns {boolean} + */ + canDrop: function ( /* e */) { + return false; + }, + renderDragSourceEffect: function () { + // for subclasses + }, + renderDropTargetEffect: function ( /* e */) { + // for subclasses + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.StaticCanvas.prototype, + /** @lends fabric.StaticCanvas.prototype */ { + /** + * Animation duration (in ms) for fx* methods + * @type Number + * @default + */ + FX_DURATION: 500, + /** + * Centers object horizontally with animation. + * @param {fabric.Object} object Object to center + * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties + * @param {Function} [callbacks.onComplete] Invoked on completion + * @param {Function} [callbacks.onChange] Invoked on every step of animation + * @return {fabric.AnimationContext} context + */ + fxCenterObjectH: function (object, callbacks) { + callbacks = callbacks || {}; + var empty = function () { }, onComplete = callbacks.onComplete || empty, onChange = callbacks.onChange || empty, _this = this; + return fabric.util.animate({ + target: this, + startValue: object.getX(), + endValue: this.getCenterPoint().x, + duration: this.FX_DURATION, + onChange: function (value) { + object.setX(value); + _this.requestRenderAll(); + onChange(); + }, + onComplete: function () { + object.setCoords(); + onComplete(); + }, + }); + }, + /** + * Centers object vertically with animation. + * @param {fabric.Object} object Object to center + * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties + * @param {Function} [callbacks.onComplete] Invoked on completion + * @param {Function} [callbacks.onChange] Invoked on every step of animation + * @return {fabric.AnimationContext} context + */ + fxCenterObjectV: function (object, callbacks) { + callbacks = callbacks || {}; + var empty = function () { }, onComplete = callbacks.onComplete || empty, onChange = callbacks.onChange || empty, _this = this; + return fabric.util.animate({ + target: this, + startValue: object.getY(), + endValue: this.getCenterPoint().y, + duration: this.FX_DURATION, + onChange: function (value) { + object.setY(value); + _this.requestRenderAll(); + onChange(); + }, + onComplete: function () { + object.setCoords(); + onComplete(); + }, + }); + }, + /** + * Same as `fabric.Canvas#remove` but animated + * @param {fabric.Object} object Object to remove + * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties + * @param {Function} [callbacks.onComplete] Invoked on completion + * @param {Function} [callbacks.onChange] Invoked on every step of animation + * @return {fabric.AnimationContext} context + */ + fxRemove: function (object, callbacks) { + callbacks = callbacks || {}; + var empty = function () { }, onComplete = callbacks.onComplete || empty, onChange = callbacks.onChange || empty, _this = this; + return fabric.util.animate({ + target: this, + startValue: object.opacity, + endValue: 0, + duration: this.FX_DURATION, + onChange: function (value) { + object.set('opacity', value); + _this.requestRenderAll(); + onChange(); + }, + onComplete: function () { + _this.remove(object); + onComplete(); + }, + }); + }, + }); + fabric.util.object.extend(fabric.Object.prototype, + /** @lends fabric.Object.prototype */ { + /** + * Animates object's properties + * @param {String|Object} property Property to animate (if string) or properties to animate (if object) + * @param {Number|Object} value Value to animate property to (if string was given first) or options object + * @return {fabric.Object} thisArg + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#animation} + * @return {fabric.AnimationContext | fabric.AnimationContext[]} animation context (or an array if passed multiple properties) + * + * As object — multiple properties + * + * object.animate({ left: ..., top: ... }); + * object.animate({ left: ..., top: ... }, { duration: ... }); + * + * As string — one property + * + * object.animate('left', ...); + * object.animate('left', { duration: ... }); + * + */ + animate: function () { + if (arguments[0] && typeof arguments[0] === 'object') { + var propsToAnimate = [], prop, skipCallbacks, out = []; + for (prop in arguments[0]) { + propsToAnimate.push(prop); + } + for (var i = 0, len = propsToAnimate.length; i < len; i++) { + prop = propsToAnimate[i]; + skipCallbacks = i !== len - 1; + out.push(this._animate(prop, arguments[0][prop], arguments[1], skipCallbacks)); + } + return out; + } + else { + return this._animate.apply(this, arguments); + } + }, + /** + * @private + * @param {String} property Property to animate + * @param {String} to Value to animate to + * @param {Object} [options] Options object + * @param {Boolean} [skipCallbacks] When true, callbacks like onchange and oncomplete are not invoked + */ + _animate: function (property, to, options, skipCallbacks) { + var _this = this, propPair; + to = to.toString(); + options = Object.assign({}, options); + if (~property.indexOf('.')) { + propPair = property.split('.'); + } + var propIsColor = _this.colorProperties.indexOf(property) > -1 || + (propPair && _this.colorProperties.indexOf(propPair[1]) > -1); + var currentValue = propPair + ? this.get(propPair[0])[propPair[1]] + : this.get(property); + if (!('from' in options)) { + options.from = currentValue; + } + if (!propIsColor) { + if (~to.indexOf('=')) { + to = currentValue + parseFloat(to.replace('=', '')); + } + else { + to = parseFloat(to); + } + } + var _options = { + target: this, + startValue: options.from, + endValue: to, + byValue: options.by, + easing: options.easing, + duration: options.duration, + abort: options.abort && + function (value, valueProgress, timeProgress) { + return options.abort.call(_this, value, valueProgress, timeProgress); + }, + onChange: function (value, valueProgress, timeProgress) { + if (propPair) { + _this[propPair[0]][propPair[1]] = value; + } + else { + _this.set(property, value); + } + if (skipCallbacks) { + return; + } + options.onChange && + options.onChange(value, valueProgress, timeProgress); + }, + onComplete: function (value, valueProgress, timeProgress) { + if (skipCallbacks) { + return; + } + _this.setCoords(); + options.onComplete && + options.onComplete(value, valueProgress, timeProgress); + }, + }; + if (propIsColor) { + return fabric.util.animateColor(_options.startValue, _options.endValue, _options.duration, _options); + } + else { + return fabric.util.animate(_options); + } + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, clone = fabric.util.object.clone, coordProps = { x1: 1, x2: 1, y1: 1, y2: 1 }; + /** + * Line class + * @class fabric.Line + * @extends fabric.Object + * @see {@link fabric.Line#initialize} for constructor definition + */ + fabric.Line = fabric.util.createClass(fabric.Object, + /** @lends fabric.Line.prototype */ { + /** + * Type of an object + * @type String + * @default + */ + type: 'line', + /** + * x value or first line edge + * @type Number + * @default + */ + x1: 0, + /** + * y value or first line edge + * @type Number + * @default + */ + y1: 0, + /** + * x value or second line edge + * @type Number + * @default + */ + x2: 0, + /** + * y value or second line edge + * @type Number + * @default + */ + y2: 0, + cacheProperties: fabric.Object.prototype.cacheProperties.concat('x1', 'x2', 'y1', 'y2'), + /** + * Constructor + * @param {Array} [points] Array of points + * @param {Object} [options] Options object + * @return {fabric.Line} thisArg + */ + initialize: function (points, options) { + if (!points) { + points = [0, 0, 0, 0]; + } + this.callSuper('initialize', options); + this.set('x1', points[0]); + this.set('y1', points[1]); + this.set('x2', points[2]); + this.set('y2', points[3]); + this._setWidthHeight(options); + }, + /** + * @private + * @param {Object} [options] Options + */ + _setWidthHeight: function (options) { + options || (options = {}); + this.width = Math.abs(this.x2 - this.x1); + this.height = Math.abs(this.y2 - this.y1); + this.left = 'left' in options ? options.left : this._getLeftToOriginX(); + this.top = 'top' in options ? options.top : this._getTopToOriginY(); + }, + /** + * @private + * @param {String} key + * @param {*} value + */ + _set: function (key, value) { + this.callSuper('_set', key, value); + if (typeof coordProps[key] !== 'undefined') { + this._setWidthHeight(); + } + return this; + }, + /** + * @private + * @return {Number} leftToOriginX Distance from left edge of canvas to originX of Line. + */ + _getLeftToOriginX: makeEdgeToOriginGetter({ + // property names + origin: 'originX', + axis1: 'x1', + axis2: 'x2', + dimension: 'width', + }, { + // possible values of origin + nearest: 'left', + center: 'center', + farthest: 'right', + }), + /** + * @private + * @return {Number} topToOriginY Distance from top edge of canvas to originY of Line. + */ + _getTopToOriginY: makeEdgeToOriginGetter({ + // property names + origin: 'originY', + axis1: 'y1', + axis2: 'y2', + dimension: 'height', + }, { + // possible values of origin + nearest: 'top', + center: 'center', + farthest: 'bottom', + }), + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function (ctx) { + ctx.beginPath(); + var p = this.calcLinePoints(); + ctx.moveTo(p.x1, p.y1); + ctx.lineTo(p.x2, p.y2); + ctx.lineWidth = this.strokeWidth; + // TODO: test this + // make sure setting "fill" changes color of a line + // (by copying fillStyle to strokeStyle, since line is stroked, not filled) + var origStrokeStyle = ctx.strokeStyle; + ctx.strokeStyle = this.stroke || ctx.fillStyle; + this.stroke && this._renderStroke(ctx); + ctx.strokeStyle = origStrokeStyle; + }, + /** + * This function is an helper for svg import. it returns the center of the object in the svg + * untransformed coordinates + * @private + * @return {Object} center point from element coordinates + */ + _findCenterFromElement: function () { + return { + x: (this.x1 + this.x2) / 2, + y: (this.y1 + this.y2) / 2, + }; + }, + /** + * Returns object representation of an instance + * @method toObject + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function (propertiesToInclude) { + return extend(this.callSuper('toObject', propertiesToInclude), this.calcLinePoints()); + }, + /* + * Calculate object dimensions from its properties + * @private + */ + _getNonTransformedDimensions: function () { + var dim = this.callSuper('_getNonTransformedDimensions'); + if (this.strokeLineCap === 'butt') { + if (this.width === 0) { + dim.y -= this.strokeWidth; + } + if (this.height === 0) { + dim.x -= this.strokeWidth; + } + } + return dim; + }, + /** + * Recalculates line points given width and height + * @private + */ + calcLinePoints: function () { + var xMult = this.x1 <= this.x2 ? -1 : 1, yMult = this.y1 <= this.y2 ? -1 : 1, x1 = xMult * this.width * 0.5, y1 = yMult * this.height * 0.5, x2 = xMult * this.width * -0.5, y2 = yMult * this.height * -0.5; + return { + x1: x1, + x2: x2, + y1: y1, + y2: y2, + }; + }, + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function () { + var p = this.calcLinePoints(); + return [ + '\n', + ]; + }, + /* _TO_SVG_END_ */ + }); + /* _FROM_SVG_START_ */ /** - * Indicates whether the browser can be scrolled when using a touchscreen and dragging on the canvas - * @type Boolean - * @default + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Line.fromElement}) + * @static + * @memberOf fabric.Line + * @see http://www.w3.org/TR/SVG/shapes.html#LineElement */ - allowTouchScrolling: false, - + fabric.Line.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x1 y1 x2 y2'.split(' ')); /** - * Indicates whether this canvas will use image smoothing, this is on by default in browsers - * @type Boolean - * @default - */ - imageSmoothingEnabled: true, - + * Returns fabric.Line instance from an SVG element + * @static + * @memberOf fabric.Line + * @param {SVGElement} element Element to parse + * @param {Object} [options] Options object + * @param {Function} [callback] callback function invoked after parsing + */ + fabric.Line.fromElement = function (element, callback, options) { + options = options || {}; + var parsedAttributes = fabric.parseAttributes(element, fabric.Line.ATTRIBUTE_NAMES), points = [ + parsedAttributes.x1 || 0, + parsedAttributes.y1 || 0, + parsedAttributes.x2 || 0, + parsedAttributes.y2 || 0, + ]; + callback(new fabric.Line(points, extend(parsedAttributes, options))); + }; + /* _FROM_SVG_END_ */ /** - * The transformation (a Canvas 2D API transform matrix) which focuses the viewport - * @type Array - * @example Default transform - * canvas.viewportTransform = [1, 0, 0, 1, 0, 0]; - * @example Scale by 70% and translate toward bottom-right by 50, without skewing - * canvas.viewportTransform = [0.7, 0, 0, 0.7, 50, 50]; - * @default - */ - viewportTransform: fabric.iMatrix.concat(), - + * Returns fabric.Line instance from an object representation + * @static + * @memberOf fabric.Line + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Line.fromObject = function (object) { + var options = clone(object, true); + options.points = [object.x1, object.y1, object.x2, object.y2]; + return fabric.Object._fromObject(fabric.Line, options, { + extraParam: 'points', + }).then(function (fabricLine) { + delete fabricLine.points; + return fabricLine; + }); + }; /** - * if set to false background image is not affected by viewport transform - * @since 1.6.3 - * @type Boolean - * @default - */ - backgroundVpt: true, + * Produces a function that calculates distance from canvas edge to Line origin. + */ + function makeEdgeToOriginGetter(propertyNames, originValues) { + var origin = propertyNames.origin, axis1 = propertyNames.axis1, axis2 = propertyNames.axis2, dimension = propertyNames.dimension, nearest = originValues.nearest, center = originValues.center, farthest = originValues.farthest; + return function () { + switch (this.get(origin)) { + case nearest: + return Math.min(this.get(axis1), this.get(axis2)); + case center: + return (Math.min(this.get(axis1), this.get(axis2)) + + 0.5 * this.get(dimension)); + case farthest: + return Math.max(this.get(axis1), this.get(axis2)); + } + }; + } +})(typeof exports !== 'undefined' ? exports : window); +const degreesToRadians = fabric$1.util.degreesToRadians; +/** + * Circle class + * @class Circle + * @extends fabric.Object + * @see {@link Circle#initialize} for constructor definition + */ +const Circle$1 = fabric$1.util.createClass(fabric$1.Object, +/** @lends Circle.prototype */ { /** - * if set to false overlya image is not affected by viewport transform - * @since 1.6.3 - * @type Boolean - * @default + * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged}) + * as well as for history (undo/redo) purposes + * @type Array */ - overlayVpt: true, - + stateProperties: fabric$1.Object.prototype.stateProperties.concat('radius', 'startAngle', 'endAngle'), /** - * When true, canvas is scaled by devicePixelRatio for better rendering on retina screens - * @type Boolean + * Type of an object + * @type String * @default */ - enableRetinaScaling: true, - + type: 'circle', /** - * Describe canvas element extension over design - * properties are tl,tr,bl,br. - * if canvas is not zoomed/panned those points are the four corner of canvas - * if canvas is viewportTransformed you those points indicate the extension - * of canvas element in plain untrasformed coordinates - * The coordinates get updated with @method calcViewportBoundaries. - * @memberOf fabric.StaticCanvas.prototype + * Radius of this circle + * @type Number + * @default */ - vptCoords: { }, - + radius: 0, /** - * Based on vptCoords and object.aCoords, skip rendering of objects that - * are not included in current viewport. - * May greatly help in applications with crowded canvas and use of zoom/pan - * If One of the corner of the bounding box of the object is on the canvas - * the objects get rendered. - * @memberOf fabric.StaticCanvas.prototype - * @type Boolean - * @default + * degrees of start of the circle. + * probably will change to degrees in next major version + * @type Number 0 - 359 + * @default 0 */ - skipOffscreen: true, - + startAngle: 0, /** - * a fabricObject that, without stroke define a clipping area with their shape. filled in black - * the clipPath object gets used when the canvas has rendered, and the context is placed in the - * top left corner of the canvas. - * clipPath will clip away controls, if you do not want this to happen use controlsAboveOverlay = true - * @type fabric.Object + * End angle of the circle + * probably will change to degrees in next major version + * @type Number 1 - 360 + * @default 360 */ - clipPath: undefined, - + endAngle: 360, + cacheProperties: fabric$1.Object.prototype.cacheProperties.concat('radius', 'startAngle', 'endAngle'), /** * @private - * @param {HTMLElement | String} el <canvas> element to initialize instance on - * @param {Object} [options] Options object + * @param {String} key + * @param {*} value + * @return {Circle} thisArg */ - _initStatic: function(el, options) { - var cb = this.requestRenderAllBound; - this._objects = []; - this._createLowerCanvas(el); - this._initOptions(options); - // only initialize retina scaling once - if (!this.interactive) { - this._initRetinaScaling(); - } - - if (options.overlayImage) { - this.setOverlayImage(options.overlayImage, cb); - } - if (options.backgroundImage) { - this.setBackgroundImage(options.backgroundImage, cb); - } - if (options.backgroundColor) { - this.setBackgroundColor(options.backgroundColor, cb); - } - if (options.overlayColor) { - this.setOverlayColor(options.overlayColor, cb); - } - this.calcOffset(); + _set: function (key, value) { + this.callSuper('_set', key, value); + if (key === 'radius') { + this.setRadius(value); + } + return this; }, - /** * @private + * @param {CanvasRenderingContext2D} ctx context to render on */ - _isRetinaScaling: function() { - return (fabric.devicePixelRatio > 1 && this.enableRetinaScaling); + _render: function (ctx) { + ctx.beginPath(); + ctx.arc(0, 0, this.radius, degreesToRadians(this.startAngle), degreesToRadians(this.endAngle), false); + this._renderPaintInOrder(ctx); }, - /** - * @private - * @return {Number} retinaScaling if applied, otherwise 1; + * Returns horizontal radius of an object (according to how an object is scaled) + * @return {Number} */ - getRetinaScaling: function() { - return this._isRetinaScaling() ? Math.max(1, fabric.devicePixelRatio) : 1; + getRadiusX: function () { + return this.get('radius') * this.get('scaleX'); }, - /** - * @private + * Returns vertical radius of an object (according to how an object is scaled) + * @return {Number} */ - _initRetinaScaling: function() { - if (!this._isRetinaScaling()) { - return; - } - var scaleRatio = fabric.devicePixelRatio; - this.__initRetinaScaling(scaleRatio, this.lowerCanvasEl, this.contextContainer); - if (this.upperCanvasEl) { - this.__initRetinaScaling(scaleRatio, this.upperCanvasEl, this.contextTop); - } - }, - - __initRetinaScaling: function(scaleRatio, canvas, context) { - canvas.setAttribute('width', this.width * scaleRatio); - canvas.setAttribute('height', this.height * scaleRatio); - context.scale(scaleRatio, scaleRatio); + getRadiusY: function () { + return this.get('radius') * this.get('scaleY'); }, - - /** - * Calculates canvas element offset relative to the document - * This method is also attached as "resize" event handler of window - * @return {fabric.Canvas} instance - * @chainable + * Sets radius of an object (and updates width accordingly) + * @return {Circle} thisArg */ - calcOffset: function () { - this._offset = getElementOffset(this.lowerCanvasEl); - return this; + setRadius: function (value) { + this.radius = value; + return this.set('width', value * 2).set('height', value * 2); }, - /** - * Sets {@link fabric.StaticCanvas#overlayImage|overlay image} for this canvas - * @param {(fabric.Image|String)} image fabric.Image instance or URL of an image to set overlay to - * @param {Function} callback callback to invoke when image is loaded and set as an overlay - * @param {Object} [options] Optional options to set for the {@link fabric.Image|overlay image}. - * @return {fabric.Canvas} thisArg - * @chainable - * @see {@link http://jsfiddle.net/fabricjs/MnzHT/|jsFiddle demo} - * @example Normal overlayImage with left/top = 0 - * canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), { - * // Needed to position overlayImage at 0/0 - * originX: 'left', - * originY: 'top' - * }); - * @example overlayImage with different properties - * canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), { - * opacity: 0.5, - * angle: 45, - * left: 400, - * top: 400, - * originX: 'left', - * originY: 'top' - * }); - * @example Stretched overlayImage #1 - width/height correspond to canvas width/height - * fabric.Image.fromURL('http://fabricjs.com/assets/jail_cell_bars.png', function(img, isError) { - * img.set({width: canvas.width, height: canvas.height, originX: 'left', originY: 'top'}); - * canvas.setOverlayImage(img, canvas.renderAll.bind(canvas)); - * }); - * @example Stretched overlayImage #2 - width/height correspond to canvas width/height - * canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), { - * width: canvas.width, - * height: canvas.height, - * // Needed to position overlayImage at 0/0 - * originX: 'left', - * originY: 'top' - * }); - * @example overlayImage loaded from cross-origin - * canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), { - * opacity: 0.5, - * angle: 45, - * left: 400, - * top: 400, - * originX: 'left', - * originY: 'top', - * crossOrigin: 'anonymous' - * }); + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance */ - setOverlayImage: function (image, callback, options) { - return this.__setBgOverlayImage('overlayImage', image, callback, options); + toObject: function (propertiesToInclude) { + return this.callSuper('toObject', ['radius', 'startAngle', 'endAngle'].concat(propertiesToInclude)); }, - + /* _TO_SVG_START_ */ /** - * Sets {@link fabric.StaticCanvas#backgroundImage|background image} for this canvas - * @param {(fabric.Image|String)} image fabric.Image instance or URL of an image to set background to - * @param {Function} callback Callback to invoke when image is loaded and set as background - * @param {Object} [options] Optional options to set for the {@link fabric.Image|background image}. - * @return {fabric.Canvas} thisArg - * @chainable - * @see {@link http://jsfiddle.net/djnr8o7a/28/|jsFiddle demo} - * @example Normal backgroundImage with left/top = 0 - * canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), { - * // Needed to position backgroundImage at 0/0 - * originX: 'left', - * originY: 'top' - * }); - * @example backgroundImage with different properties - * canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), { - * opacity: 0.5, - * angle: 45, - * left: 400, - * top: 400, - * originX: 'left', - * originY: 'top' - * }); - * @example Stretched backgroundImage #1 - width/height correspond to canvas width/height - * fabric.Image.fromURL('http://fabricjs.com/assets/honey_im_subtle.png', function(img, isError) { - * img.set({width: canvas.width, height: canvas.height, originX: 'left', originY: 'top'}); - * canvas.setBackgroundImage(img, canvas.renderAll.bind(canvas)); - * }); - * @example Stretched backgroundImage #2 - width/height correspond to canvas width/height - * canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), { - * width: canvas.width, - * height: canvas.height, - * // Needed to position backgroundImage at 0/0 - * originX: 'left', - * originY: 'top' - * }); - * @example backgroundImage loaded from cross-origin - * canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), { - * opacity: 0.5, - * angle: 45, - * left: 400, - * top: 400, - * originX: 'left', - * originY: 'top', - * crossOrigin: 'anonymous' - * }); + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance */ - // TODO: fix stretched examples - setBackgroundImage: function (image, callback, options) { - return this.__setBgOverlayImage('backgroundImage', image, callback, options); + _toSVG: function () { + const angle = (this.endAngle - this.startAngle) % 360; + if (angle === 0) { + return [ + '\n', + ]; + } + else { + const { radius } = this; + const start = degreesToRadians(this.startAngle), end = degreesToRadians(this.endAngle), startX = fabric$1.util.cos(start) * radius, startY = fabric$1.util.sin(start) * radius, endX = fabric$1.util.cos(end) * radius, endY = fabric$1.util.sin(end) * radius, largeFlag = angle > 180 ? '1' : '0'; + return [ + '\n', + ]; + } }, - + /* _TO_SVG_END_ */ +}); +/* _FROM_SVG_START_ */ +/** + * List of attribute names to account for when parsing SVG element (used by {@link Circle.fromElement}) + * @static + * @memberOf Circle + * @see: http://www.w3.org/TR/SVG/shapes.html#CircleElement + */ +Circle$1.ATTRIBUTE_NAMES = ['cx', 'cy', 'r', ...fabric$1.SHARED_ATTRIBUTES]; +/** + * Returns {@link Circle} instance from an SVG element + * @static + * @memberOf Circle + * @param {SVGElement} element Element to parse + * @param {Function} [callback] Options callback invoked after parsing is finished + * @param {Object} [options] Partial Circle object to default missing properties on the element. + * @throws {Error} If value of `r` attribute is missing or invalid + */ +Circle$1.fromElement = function (element, callback) { + const _a = fabric$1.parseAttributes(element, Circle$1.ATTRIBUTE_NAMES), { left = 0, top = 0, radius } = _a, otherParsedAttributes = __rest(_a, ["left", "top", "radius"]); + if (!radius || radius < 0) { + throw new Error('value of `r` attribute is required and can not be negative'); + } + // this probably requires to be fixed for default origins not being top/left. + callback(new fabric$1.Circle(Object.assign(Object.assign({}, otherParsedAttributes), { radius, left: left - radius, top: top - radius }))); +}; +/* _FROM_SVG_END_ */ +/** + * Returns {@link Circle} instance from an object representation + * @static + * @memberOf Circle + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ +Circle$1.fromObject = (object) => fabric$1.Object._fromObject(fabric$1.Circle, object); +fabric$1.Circle = Circle$1; + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}); + /** + * Triangle class + * @class fabric.Triangle + * @extends fabric.Object + * @return {fabric.Triangle} thisArg + * @see {@link fabric.Triangle#initialize} for constructor definition + */ + fabric.Triangle = fabric.util.createClass(fabric.Object, + /** @lends fabric.Triangle.prototype */ { + /** + * Type of an object + * @type String + * @default + */ + type: 'triangle', + /** + * Width is set to 100 to compensate the old initialize code that was setting it to 100 + * @type Number + * @default + */ + width: 100, + /** + * Height is set to 100 to compensate the old initialize code that was setting it to 100 + * @type Number + * @default + */ + height: 100, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function (ctx) { + var widthBy2 = this.width / 2, heightBy2 = this.height / 2; + ctx.beginPath(); + ctx.moveTo(-widthBy2, heightBy2); + ctx.lineTo(0, -heightBy2); + ctx.lineTo(widthBy2, heightBy2); + ctx.closePath(); + this._renderPaintInOrder(ctx); + }, + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function () { + var widthBy2 = this.width / 2, heightBy2 = this.height / 2, points = [ + -widthBy2 + ' ' + heightBy2, + '0 ' + -heightBy2, + widthBy2 + ' ' + heightBy2, + ].join(','); + return ['']; + }, + /* _TO_SVG_END_ */ + }); /** - * Sets {@link fabric.StaticCanvas#overlayColor|foreground color} for this canvas - * @param {(String|fabric.Pattern)} overlayColor Color or pattern to set foreground color to - * @param {Function} callback Callback to invoke when foreground color is set - * @return {fabric.Canvas} thisArg - * @chainable - * @see {@link http://jsfiddle.net/fabricjs/pB55h/|jsFiddle demo} - * @example Normal overlayColor - color value - * canvas.setOverlayColor('rgba(255, 73, 64, 0.6)', canvas.renderAll.bind(canvas)); - * @example fabric.Pattern used as overlayColor - * canvas.setOverlayColor({ - * source: 'http://fabricjs.com/assets/escheresque_ste.png' - * }, canvas.renderAll.bind(canvas)); - * @example fabric.Pattern used as overlayColor with repeat and offset - * canvas.setOverlayColor({ - * source: 'http://fabricjs.com/assets/escheresque_ste.png', - * repeat: 'repeat', - * offsetX: 200, - * offsetY: 100 - * }, canvas.renderAll.bind(canvas)); - */ - setOverlayColor: function(overlayColor, callback) { - return this.__setBgOverlayColor('overlayColor', overlayColor, callback); - }, + * Returns {@link fabric.Triangle} instance from an object representation + * @static + * @memberOf fabric.Triangle + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Triangle.fromObject = function (object) { + return fabric.Object._fromObject(fabric.Triangle, object); + }; +})(typeof exports !== 'undefined' ? exports : window); +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), piBy2 = Math.PI * 2; /** - * Sets {@link fabric.StaticCanvas#backgroundColor|background color} for this canvas - * @param {(String|fabric.Pattern)} backgroundColor Color or pattern to set background color to - * @param {Function} callback Callback to invoke when background color is set - * @return {fabric.Canvas} thisArg - * @chainable - * @see {@link http://jsfiddle.net/fabricjs/hXzvk/|jsFiddle demo} - * @example Normal backgroundColor - color value - * canvas.setBackgroundColor('rgba(255, 73, 64, 0.6)', canvas.renderAll.bind(canvas)); - * @example fabric.Pattern used as backgroundColor - * canvas.setBackgroundColor({ - * source: 'http://fabricjs.com/assets/escheresque_ste.png' - * }, canvas.renderAll.bind(canvas)); - * @example fabric.Pattern used as backgroundColor with repeat and offset - * canvas.setBackgroundColor({ - * source: 'http://fabricjs.com/assets/escheresque_ste.png', - * repeat: 'repeat', - * offsetX: 200, - * offsetY: 100 - * }, canvas.renderAll.bind(canvas)); - */ - setBackgroundColor: function(backgroundColor, callback) { - return this.__setBgOverlayColor('backgroundColor', backgroundColor, callback); - }, - + * Ellipse class + * @class fabric.Ellipse + * @extends fabric.Object + * @return {fabric.Ellipse} thisArg + * @see {@link fabric.Ellipse#initialize} for constructor definition + */ + fabric.Ellipse = fabric.util.createClass(fabric.Object, + /** @lends fabric.Ellipse.prototype */ { + /** + * Type of an object + * @type String + * @default + */ + type: 'ellipse', + /** + * Horizontal radius + * @type Number + * @default + */ + rx: 0, + /** + * Vertical radius + * @type Number + * @default + */ + ry: 0, + cacheProperties: fabric.Object.prototype.cacheProperties.concat('rx', 'ry'), + /** + * Constructor + * @param {Object} [options] Options object + * @return {fabric.Ellipse} thisArg + */ + initialize: function (options) { + this.callSuper('initialize', options); + this.set('rx', (options && options.rx) || 0); + this.set('ry', (options && options.ry) || 0); + }, + /** + * @private + * @param {String} key + * @param {*} value + * @return {fabric.Ellipse} thisArg + */ + _set: function (key, value) { + this.callSuper('_set', key, value); + switch (key) { + case 'rx': + this.rx = value; + this.set('width', value * 2); + break; + case 'ry': + this.ry = value; + this.set('height', value * 2); + break; + } + return this; + }, + /** + * Returns horizontal radius of an object (according to how an object is scaled) + * @return {Number} + */ + getRx: function () { + return this.get('rx') * this.get('scaleX'); + }, + /** + * Returns Vertical radius of an object (according to how an object is scaled) + * @return {Number} + */ + getRy: function () { + return this.get('ry') * this.get('scaleY'); + }, + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function (propertiesToInclude) { + return this.callSuper('toObject', ['rx', 'ry'].concat(propertiesToInclude)); + }, + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function () { + return [ + '\n', + ]; + }, + /* _TO_SVG_END_ */ + /** + * @private + * @param {CanvasRenderingContext2D} ctx context to render on + */ + _render: function (ctx) { + ctx.beginPath(); + ctx.save(); + ctx.transform(1, 0, 0, this.ry / this.rx, 0, 0); + ctx.arc(0, 0, this.rx, 0, piBy2, false); + ctx.restore(); + this._renderPaintInOrder(ctx); + }, + }); + /* _FROM_SVG_START_ */ /** - * @private - * @param {String} property Property to set ({@link fabric.StaticCanvas#backgroundImage|backgroundImage} - * or {@link fabric.StaticCanvas#overlayImage|overlayImage}) - * @param {(fabric.Image|String|null)} image fabric.Image instance, URL of an image or null to set background or overlay to - * @param {Function} callback Callback to invoke when image is loaded and set as background or overlay. The first argument is the created image, the second argument is a flag indicating whether an error occurred or not. - * @param {Object} [options] Optional options to set for the {@link fabric.Image|image}. - */ - __setBgOverlayImage: function(property, image, callback, options) { - if (typeof image === 'string') { - fabric.util.loadImage(image, function(img, isError) { - if (img) { - var instance = new fabric.Image(img, options); - this[property] = instance; - instance.canvas = this; - } - callback && callback(img, isError); - }, this, options && options.crossOrigin); - } - else { - options && image.setOptions(options); - this[property] = image; - image && (image.canvas = this); - callback && callback(image, false); - } - - return this; - }, - + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Ellipse.fromElement}) + * @static + * @memberOf fabric.Ellipse + * @see http://www.w3.org/TR/SVG/shapes.html#EllipseElement + */ + fabric.Ellipse.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('cx cy rx ry'.split(' ')); /** - * @private - * @param {String} property Property to set ({@link fabric.StaticCanvas#backgroundColor|backgroundColor} - * or {@link fabric.StaticCanvas#overlayColor|overlayColor}) - * @param {(Object|String|null)} color Object with pattern information, color value or null - * @param {Function} [callback] Callback is invoked when color is set - */ - __setBgOverlayColor: function(property, color, callback) { - this[property] = color; - this._initGradient(color, property); - this._initPattern(color, property, callback); - return this; - }, - + * Returns {@link fabric.Ellipse} instance from an SVG element + * @static + * @memberOf fabric.Ellipse + * @param {SVGElement} element Element to parse + * @param {Function} [callback] Options callback invoked after parsing is finished + * @return {fabric.Ellipse} + */ + fabric.Ellipse.fromElement = function (element, callback) { + var parsedAttributes = fabric.parseAttributes(element, fabric.Ellipse.ATTRIBUTE_NAMES); + parsedAttributes.left = (parsedAttributes.left || 0) - parsedAttributes.rx; + parsedAttributes.top = (parsedAttributes.top || 0) - parsedAttributes.ry; + callback(new fabric.Ellipse(parsedAttributes)); + }; + /* _FROM_SVG_END_ */ /** - * @private + * Returns {@link fabric.Ellipse} instance from an object representation + * @static + * @memberOf fabric.Ellipse + * @param {Object} object Object to create an instance from + * @returns {Promise} */ - _createCanvasElement: function() { - var element = createCanvasElement(); - if (!element) { - throw CANVAS_INIT_ERROR; - } - if (!element.style) { - element.style = { }; - } - if (typeof element.getContext === 'undefined') { - throw CANVAS_INIT_ERROR; - } - return element; - }, + fabric.Ellipse.fromObject = function (object) { + return fabric.Object._fromObject(fabric.Ellipse, object); + }; +})(typeof exports !== 'undefined' ? exports : window); +/** + * Rectangle class + * @class Rect + * @extends fabric.Object + * @return {Rect} thisArg + * @see {@link Rect#initialize} for constructor definition + */ +const Rect$1 = fabric$1.util.createClass(fabric$1.Object, +/** @lends Rect.prototype */ { /** - * @private - * @param {Object} [options] Options object + * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged}) + * as well as for history (undo/redo) purposes + * @type Array */ - _initOptions: function (options) { - var lowerCanvasEl = this.lowerCanvasEl; - this._setOptions(options); - - this.width = this.width || parseInt(lowerCanvasEl.width, 10) || 0; - this.height = this.height || parseInt(lowerCanvasEl.height, 10) || 0; - - if (!this.lowerCanvasEl.style) { - return; - } - - lowerCanvasEl.width = this.width; - lowerCanvasEl.height = this.height; - - lowerCanvasEl.style.width = this.width + 'px'; - lowerCanvasEl.style.height = this.height + 'px'; - - this.viewportTransform = this.viewportTransform.slice(); - }, - + stateProperties: fabric$1.Object.prototype.stateProperties.concat('rx', 'ry'), /** - * Creates a bottom canvas - * @private - * @param {HTMLElement} [canvasEl] - */ - _createLowerCanvas: function (canvasEl) { - // canvasEl === 'HTMLCanvasElement' does not work on jsdom/node - if (canvasEl && canvasEl.getContext) { - this.lowerCanvasEl = canvasEl; - } - else { - this.lowerCanvasEl = fabric.util.getById(canvasEl) || this._createCanvasElement(); - } - - fabric.util.addClass(this.lowerCanvasEl, 'lower-canvas'); - this._originalCanvasStyle = this.lowerCanvasEl.style; - if (this.interactive) { - this._applyCanvasStyle(this.lowerCanvasEl); - } - - this.contextContainer = this.lowerCanvasEl.getContext('2d'); - }, - - /** - * Returns canvas width (in px) - * @return {Number} + * Type of an object + * @type String + * @default */ - getWidth: function () { - return this.width; - }, - + type: 'rect', /** - * Returns canvas height (in px) - * @return {Number} + * Horizontal border radius + * @type Number + * @default */ - getHeight: function () { - return this.height; - }, - + rx: 0, /** - * Sets width of this canvas instance - * @param {Number|String} value Value to set width to - * @param {Object} [options] Options object - * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions - * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions - * @return {fabric.Canvas} instance - * @chainable true + * Vertical border radius + * @type Number + * @default */ - setWidth: function (value, options) { - return this.setDimensions({ width: value }, options); - }, - + ry: 0, + cacheProperties: fabric$1.Object.prototype.cacheProperties.concat('rx', 'ry'), /** - * Sets height of this canvas instance - * @param {Number|String} value Value to set height to - * @param {Object} [options] Options object - * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions - * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions - * @return {fabric.Canvas} instance - * @chainable true + * Constructor + * @param {Object} [options] Options object + * @return {Object} thisArg */ - setHeight: function (value, options) { - return this.setDimensions({ height: value }, options); + initialize: function (options) { + this.callSuper('initialize', options); + this._initRxRy(); }, - /** - * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em) - * @param {Object} dimensions Object with width/height properties - * @param {Number|String} [dimensions.width] Width of canvas element - * @param {Number|String} [dimensions.height] Height of canvas element - * @param {Object} [options] Options object - * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions - * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions - * @return {fabric.Canvas} thisArg - * @chainable + * Initializes rx/ry attributes + * @private */ - setDimensions: function (dimensions, options) { - var cssValue; - - options = options || {}; - - for (var prop in dimensions) { - cssValue = dimensions[prop]; - - if (!options.cssOnly) { - this._setBackstoreDimension(prop, dimensions[prop]); - cssValue += 'px'; - this.hasLostContext = true; + _initRxRy: function () { + const { rx, ry } = this; + if (rx && !ry) { + this.ry = rx; } - - if (!options.backstoreOnly) { - this._setCssDimension(prop, cssValue); + else if (ry && !rx) { + this.rx = ry; } - } - if (this._isCurrentlyDrawing) { - this.freeDrawingBrush && this.freeDrawingBrush._setBrushStyles(this.contextTop); - } - this._initRetinaScaling(); - this.calcOffset(); - - if (!options.cssOnly) { - this.requestRenderAll(); - } - - return this; - }, - - /** - * Helper for setting width/height - * @private - * @param {String} prop property (width|height) - * @param {Number} value value to set property to - * @return {fabric.Canvas} instance - * @chainable true - */ - _setBackstoreDimension: function (prop, value) { - this.lowerCanvasEl[prop] = value; - - if (this.upperCanvasEl) { - this.upperCanvasEl[prop] = value; - } - - if (this.cacheCanvasEl) { - this.cacheCanvasEl[prop] = value; - } - - this[prop] = value; - - return this; - }, - - /** - * Helper for setting css width/height - * @private - * @param {String} prop property (width|height) - * @param {String} value value to set property to - * @return {fabric.Canvas} instance - * @chainable true - */ - _setCssDimension: function (prop, value) { - this.lowerCanvasEl.style[prop] = value; - - if (this.upperCanvasEl) { - this.upperCanvasEl.style[prop] = value; - } - - if (this.wrapperEl) { - this.wrapperEl.style[prop] = value; - } - - return this; - }, - - /** - * Returns canvas zoom level - * @return {Number} - */ - getZoom: function () { - return this.viewportTransform[0]; - }, - - /** - * Sets viewport transformation of this canvas instance - * @param {Array} vpt a Canvas 2D API transform matrix - * @return {fabric.Canvas} instance - * @chainable true - */ - setViewportTransform: function (vpt) { - var activeObject = this._activeObject, - backgroundObject = this.backgroundImage, - overlayObject = this.overlayImage, - object, i, len; - this.viewportTransform = vpt; - for (i = 0, len = this._objects.length; i < len; i++) { - object = this._objects[i]; - object.group || object.setCoords(true); - } - if (activeObject) { - activeObject.setCoords(); - } - if (backgroundObject) { - backgroundObject.setCoords(true); - } - if (overlayObject) { - overlayObject.setCoords(true); - } - this.calcViewportBoundaries(); - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - - /** - * Sets zoom level of this canvas instance, the zoom centered around point - * meaning that following zoom to point with the same point will have the visual - * effect of the zoom originating from that point. The point won't move. - * It has nothing to do with canvas center or visual center of the viewport. - * @param {fabric.Point} point to zoom with respect to - * @param {Number} value to set zoom to, less than 1 zooms out - * @return {fabric.Canvas} instance - * @chainable true - */ - zoomToPoint: function (point, value) { - // TODO: just change the scale, preserve other transformations - var before = point, vpt = this.viewportTransform.slice(0); - point = transformPoint(point, invertTransform(this.viewportTransform)); - vpt[0] = value; - vpt[3] = value; - var after = transformPoint(point, vpt); - vpt[4] += before.x - after.x; - vpt[5] += before.y - after.y; - return this.setViewportTransform(vpt); - }, - - /** - * Sets zoom level of this canvas instance - * @param {Number} value to set zoom to, less than 1 zooms out - * @return {fabric.Canvas} instance - * @chainable true - */ - setZoom: function (value) { - this.zoomToPoint(new fabric.Point(0, 0), value); - return this; - }, - - /** - * Pan viewport so as to place point at top left corner of canvas - * @param {fabric.Point} point to move to - * @return {fabric.Canvas} instance - * @chainable true - */ - absolutePan: function (point) { - var vpt = this.viewportTransform.slice(0); - vpt[4] = -point.x; - vpt[5] = -point.y; - return this.setViewportTransform(vpt); - }, - - /** - * Pans viewpoint relatively - * @param {fabric.Point} point (position vector) to move by - * @return {fabric.Canvas} instance - * @chainable true - */ - relativePan: function (point) { - return this.absolutePan(new fabric.Point( - -point.x - this.viewportTransform[4], - -point.y - this.viewportTransform[5] - )); - }, - - /** - * Returns <canvas> element corresponding to this instance - * @return {HTMLCanvasElement} - */ - getElement: function () { - return this.lowerCanvasEl; - }, - - /** - * @private - * @param {fabric.Object} obj Object that was added - */ - _onObjectAdded: function(obj) { - this.stateful && obj.setupState(); - obj._set('canvas', this); - obj.setCoords(); - this.fire('object:added', { target: obj }); - obj.fire('added'); }, - /** * @private - * @param {fabric.Object} obj Object that was removed + * @param {CanvasRenderingContext2D} ctx Context to render on */ - _onObjectRemoved: function(obj) { - this.fire('object:removed', { target: obj }); - obj.fire('removed'); - delete obj.canvas; + _render: function (ctx) { + // 1x1 case (used in spray brush) optimization was removed because + // with caching and higher zoom level this makes more damage than help + const { width: w, height: h } = this; + const x = -w / 2; + const y = -h / 2; + const rx = this.rx ? Math.min(this.rx, w / 2) : 0; + const ry = this.ry ? Math.min(this.ry, h / 2) : 0; + const isRounded = rx !== 0 || ry !== 0; + ctx.beginPath(); + ctx.moveTo(x + rx, y); + ctx.lineTo(x + w - rx, y); + isRounded && + ctx.bezierCurveTo(x + w - kRect * rx, y, x + w, y + kRect * ry, x + w, y + ry); + ctx.lineTo(x + w, y + h - ry); + isRounded && + ctx.bezierCurveTo(x + w, y + h - kRect * ry, x + w - kRect * rx, y + h, x + w - rx, y + h); + ctx.lineTo(x + rx, y + h); + isRounded && + ctx.bezierCurveTo(x + kRect * rx, y + h, x, y + h - kRect * ry, x, y + h - ry); + ctx.lineTo(x, y + ry); + isRounded && + ctx.bezierCurveTo(x, y + kRect * ry, x + kRect * rx, y, x + rx, y); + ctx.closePath(); + this._renderPaintInOrder(ctx); }, - /** - * Clears specified context of canvas element - * @param {CanvasRenderingContext2D} ctx Context to clear - * @return {fabric.Canvas} thisArg - * @chainable + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance */ - clearContext: function(ctx) { - ctx.clearRect(0, 0, this.width, this.height); - return this; + toObject: function (propertiesToInclude) { + return this.callSuper('toObject', ['rx', 'ry'].concat(propertiesToInclude)); }, - + /* _TO_SVG_START_ */ /** - * Returns context of canvas where objects are drawn - * @return {CanvasRenderingContext2D} + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance */ - getContext: function () { - return this.contextContainer; + _toSVG: function () { + const { width, height, rx, ry } = this; + return [ + '\n', + ]; }, - + /* _TO_SVG_END_ */ +}); +/* _FROM_SVG_START_ */ +/** + * List of attribute names to account for when parsing SVG element (used by `Rect.fromElement`) + * @static + * @memberOf Rect + * @see: http://www.w3.org/TR/SVG/shapes.html#RectElement + */ +Rect$1.ATTRIBUTE_NAMES = fabric$1.SHARED_ATTRIBUTES.concat('x y rx ry width height'.split(' ')); +/** + * Returns {@link Rect} instance from an SVG element + * @static + * @memberOf Rect + * @param {SVGElement} element Element to parse + * @param {Function} callback callback function invoked after parsing + * @param {Object} [options] Options object + */ +Rect$1.fromElement = function (element, callback, options = {}) { + if (!element) { + return callback(null); + } + const _a = fabric$1.parseAttributes(element, Rect$1.ATTRIBUTE_NAMES), { left = 0, top = 0, width = 0, height = 0, visible = true } = _a, restOfparsedAttributes = __rest(_a, ["left", "top", "width", "height", "visible"]); + const rect = new Rect$1(Object.assign(Object.assign(Object.assign({}, options), restOfparsedAttributes), { left, + top, + width, + height, visible: Boolean(visible && width && height) })); + callback(rect); +}; +/* _FROM_SVG_END_ */ +/** + * Returns {@link Rect} instance from an object representation + * @static + * @memberOf Rect + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ +Rect$1.fromObject = (object) => fabric$1.Object._fromObject(Rect$1, object); +fabric$1.Rect = Rect$1; + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, toFixed = fabric.util.toFixed, projectStrokeOnPoints = fabric.util.projectStrokeOnPoints; + /** + * Polyline class + * @class fabric.Polyline + * @extends fabric.Object + * @see {@link fabric.Polyline#initialize} for constructor definition + */ + fabric.Polyline = fabric.util.createClass(fabric.Object, + /** @lends fabric.Polyline.prototype */ { + /** + * Type of an object + * @type String + * @default + */ + type: 'polyline', + /** + * Points array + * @type Array + * @default + */ + points: null, + /** + * WARNING: Feature in progress + * Calculate the exact bounding box taking in account strokeWidth on acute angles + * this will be turned to true by default on fabric 6.0 + * maybe will be left in as an optimization since calculations may be slow + * @deprecated + * @type Boolean + * @default false + */ + exactBoundingBox: false, + cacheProperties: fabric.Object.prototype.cacheProperties.concat('points'), + /** + * Constructor + * @param {Array} points Array of points (where each point is an object with x and y) + * @param {Object} [options] Options object + * @return {fabric.Polyline} thisArg + * @example + * var poly = new fabric.Polyline([ + * { x: 10, y: 10 }, + * { x: 50, y: 30 }, + * { x: 40, y: 70 }, + * { x: 60, y: 50 }, + * { x: 100, y: 150 }, + * { x: 40, y: 100 } + * ], { + * stroke: 'red', + * left: 100, + * top: 100 + * }); + */ + initialize: function (points, options) { + options = options || {}; + this.points = points || []; + this.callSuper('initialize', options); + this._setPositionDimensions(options); + }, + /** + * @private + */ + _projectStrokeOnPoints: function () { + return projectStrokeOnPoints(this.points, this, true); + }, + _setPositionDimensions: function (options) { + options || (options = {}); + var calcDim = this._calcDimensions(options), correctLeftTop, correctSize = this.exactBoundingBox ? this.strokeWidth : 0; + this.width = calcDim.width - correctSize; + this.height = calcDim.height - correctSize; + if (!options.fromSVG) { + correctLeftTop = this.translateToGivenOrigin({ + // this looks bad, but is one way to keep it optional for now. + x: calcDim.left - this.strokeWidth / 2 + correctSize / 2, + y: calcDim.top - this.strokeWidth / 2 + correctSize / 2, + }, 'left', 'top', this.originX, this.originY); + } + if (typeof options.left === 'undefined') { + this.left = options.fromSVG ? calcDim.left : correctLeftTop.x; + } + if (typeof options.top === 'undefined') { + this.top = options.fromSVG ? calcDim.top : correctLeftTop.y; + } + this.pathOffset = { + x: calcDim.left + this.width / 2 + correctSize / 2, + y: calcDim.top + this.height / 2 + correctSize / 2, + }; + }, + /** + * Calculate the polygon min and max point from points array, + * returning an object with left, top, width, height to measure the + * polygon size + * @return {Object} object.left X coordinate of the polygon leftmost point + * @return {Object} object.top Y coordinate of the polygon topmost point + * @return {Object} object.width distance between X coordinates of the polygon leftmost and rightmost point + * @return {Object} object.height distance between Y coordinates of the polygon topmost and bottommost point + * @private + */ + _calcDimensions: function () { + const points = this.exactBoundingBox + ? this._projectStrokeOnPoints() + : this.points.map((p) => new Point(p)); + if (points.length === 0) { + return makeBoundingBoxFromPoints([new Point(0, 0)]); + } + return makeBoundingBoxFromPoints(points); + }, + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toObject: function (propertiesToInclude) { + return extend(this.callSuper('toObject', propertiesToInclude), { + points: this.points.concat(), + }); + }, + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function () { + var points = [], diffX = this.pathOffset.x, diffY = this.pathOffset.y, NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; + for (var i = 0, len = this.points.length; i < len; i++) { + points.push(toFixed(this.points[i].x - diffX, NUM_FRACTION_DIGITS), ',', toFixed(this.points[i].y - diffY, NUM_FRACTION_DIGITS), ' '); + } + return [ + '<' + this.type + ' ', + 'COMMON_PARTS', + 'points="', + points.join(''), + '" />\n', + ]; + }, + /* _TO_SVG_END_ */ + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + commonRender: function (ctx) { + var point, len = this.points.length, x = this.pathOffset.x, y = this.pathOffset.y; + if (!len || isNaN(this.points[len - 1].y)) { + // do not draw if no points or odd points + // NaN comes from parseFloat of a empty string in parser + return false; + } + ctx.beginPath(); + ctx.moveTo(this.points[0].x - x, this.points[0].y - y); + for (var i = 0; i < len; i++) { + point = this.points[i]; + ctx.lineTo(point.x - x, point.y - y); + } + return true; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function (ctx) { + if (!this.commonRender(ctx)) { + return; + } + this._renderPaintInOrder(ctx); + }, + /** + * Returns complexity of an instance + * @return {Number} complexity of this instance + */ + complexity: function () { + return this.get('points').length; + }, + }); + /* _FROM_SVG_START_ */ /** - * Clears all contexts (background, main, top) of an instance - * @return {fabric.Canvas} thisArg - * @chainable + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Polyline.fromElement}) + * @static + * @memberOf fabric.Polyline + * @see: http://www.w3.org/TR/SVG/shapes.html#PolylineElement */ - clear: function () { - this.remove.apply(this, this.getObjects()); - this.backgroundImage = null; - this.overlayImage = null; - this.backgroundColor = ''; - this.overlayColor = ''; - if (this._hasITextHandlers) { - this.off('mouse:up', this._mouseUpITextHandler); - this._iTextInstances = null; - this._hasITextHandlers = false; - } - this.clearContext(this.contextContainer); - this.fire('canvas:cleared'); - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - + fabric.Polyline.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(); /** - * Renders the canvas - * @return {fabric.Canvas} instance - * @chainable + * Returns fabric.Polyline instance from an SVG element + * @static + * @memberOf fabric.Polyline + * @param {SVGElement} element Element to parser + * @param {Function} callback callback function invoked after parsing + * @param {Object} [options] Options object */ - renderAll: function () { - var canvasToDrawOn = this.contextContainer; - this.renderCanvas(canvasToDrawOn, this._objects); - return this; - }, - + fabric.Polyline.fromElementGenerator = function (_class) { + return function (element, callback, options) { + if (!element) { + return callback(null); + } + options || (options = {}); + var points = fabric.parsePointsAttribute(element.getAttribute('points')), parsedAttributes = fabric.parseAttributes(element, fabric[_class].ATTRIBUTE_NAMES); + parsedAttributes.fromSVG = true; + callback(new fabric[_class](points, extend(parsedAttributes, options))); + }; + }; + fabric.Polyline.fromElement = + fabric.Polyline.fromElementGenerator('Polyline'); + /* _FROM_SVG_END_ */ /** - * Function created to be instance bound at initialization - * used in requestAnimationFrame rendering - * Let the fabricJS call it. If you call it manually you could have more - * animationFrame stacking on to of each other - * for an imperative rendering, use canvas.renderAll - * @private - * @return {fabric.Canvas} instance - * @chainable + * Returns fabric.Polyline instance from an object representation + * @static + * @memberOf fabric.Polyline + * @param {Object} object Object to create an instance from + * @returns {Promise} */ - renderAndReset: function() { - this.isRendering = 0; - this.renderAll(); - }, - + fabric.Polyline.fromObject = function (object) { + return fabric.Object._fromObject(fabric.Polyline, object, { + extraParam: 'points', + }); + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), projectStrokeOnPoints = fabric.util.projectStrokeOnPoints; + /** + * Polygon class + * @class fabric.Polygon + * @extends fabric.Polyline + * @see {@link fabric.Polygon#initialize} for constructor definition + */ + fabric.Polygon = fabric.util.createClass(fabric.Polyline, + /** @lends fabric.Polygon.prototype */ { + /** + * Type of an object + * @type String + * @default + */ + type: 'polygon', + /** + * @private + */ + _projectStrokeOnPoints: function () { + return projectStrokeOnPoints(this.points, this); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function (ctx) { + if (!this.commonRender(ctx)) { + return; + } + ctx.closePath(); + this._renderPaintInOrder(ctx); + }, + }); + /* _FROM_SVG_START_ */ /** - * Append a renderAll request to next animation frame. - * unless one is already in progress, in that case nothing is done - * a boolean flag will avoid appending more. - * @return {fabric.Canvas} instance - * @chainable + * List of attribute names to account for when parsing SVG element (used by `fabric.Polygon.fromElement`) + * @static + * @memberOf fabric.Polygon + * @see: http://www.w3.org/TR/SVG/shapes.html#PolygonElement */ - requestRenderAll: function () { - if (!this.isRendering) { - this.isRendering = fabric.util.requestAnimFrame(this.renderAndResetBound); - } - return this; - }, - + fabric.Polygon.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(); /** - * Calculate the position of the 4 corner of canvas with current viewportTransform. - * helps to determinate when an object is in the current rendering viewport using - * object absolute coordinates ( aCoords ) - * @return {Object} points.tl - * @chainable + * Returns {@link fabric.Polygon} instance from an SVG element + * @static + * @memberOf fabric.Polygon + * @param {SVGElement} element Element to parse + * @param {Function} callback callback function invoked after parsing + * @param {Object} [options] Options object */ - calcViewportBoundaries: function() { - var points = { }, width = this.width, height = this.height, - iVpt = invertTransform(this.viewportTransform); - points.tl = transformPoint({ x: 0, y: 0 }, iVpt); - points.br = transformPoint({ x: width, y: height }, iVpt); - points.tr = new fabric.Point(points.br.x, points.tl.y); - points.bl = new fabric.Point(points.tl.x, points.br.y); - this.vptCoords = points; - return points; - }, - - cancelRequestedRender: function() { - if (this.isRendering) { - fabric.util.cancelAnimFrame(this.isRendering); - this.isRendering = 0; - } - }, - + fabric.Polygon.fromElement = fabric.Polyline.fromElementGenerator('Polygon'); + /* _FROM_SVG_END_ */ /** - * Renders background, objects, overlay and controls. - * @param {CanvasRenderingContext2D} ctx - * @param {Array} objects to render - * @return {fabric.Canvas} instance - * @chainable + * Returns fabric.Polygon instance from an object representation + * @static + * @memberOf fabric.Polygon + * @param {Object} object Object to create an instance from + * @returns {Promise} */ - renderCanvas: function(ctx, objects) { - var v = this.viewportTransform, path = this.clipPath; - this.cancelRequestedRender(); - this.calcViewportBoundaries(); - this.clearContext(ctx); - fabric.util.setImageSmoothing(ctx, this.imageSmoothingEnabled); - this.fire('before:render', { ctx: ctx, }); - this._renderBackground(ctx); - - ctx.save(); - //apply viewport transform once for all rendering process - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - this._renderObjects(ctx, objects); - ctx.restore(); - if (!this.controlsAboveOverlay && this.interactive) { - this.drawControls(ctx); - } - if (path) { - path.canvas = this; - // needed to setup a couple of variables - path.shouldCache(); - path._transformDone = true; - path.renderCache({ forClipping: true }); - this.drawClipPathOnCanvas(ctx); - } - this._renderOverlay(ctx); - if (this.controlsAboveOverlay && this.interactive) { - this.drawControls(ctx); - } - this.fire('after:render', { ctx: ctx, }); - }, - + fabric.Polygon.fromObject = function (object) { + return fabric.Object._fromObject(fabric.Polygon, object, { + extraParam: 'points', + }); + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, clone = fabric.util.object.clone, toFixed = fabric.util.toFixed; + /** + * Path class + * @class fabric.Path + * @extends fabric.Object + * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#path_and_pathgroup} + * @see {@link fabric.Path#initialize} for constructor definition + */ + fabric.Path = fabric.util.createClass(fabric.Object, + /** @lends fabric.Path.prototype */ { + /** + * Type of an object + * @type String + * @default + */ + type: 'path', + /** + * Array of path points + * @type Array + * @default + */ + path: null, + cacheProperties: fabric.Object.prototype.cacheProperties.concat('path', 'fillRule'), + stateProperties: fabric.Object.prototype.stateProperties.concat('path'), + /** + * Constructor + * @param {Array|String} path Path data (sequence of coordinates and corresponding "command" tokens) + * @param {Object} [options] Options object + * @return {fabric.Path} thisArg + */ + initialize: function (path, options) { + options = clone(options || {}); + delete options.path; + this.callSuper('initialize', options); + this._setPath(path || [], options); + }, + /** + * @private + * @param {Array|String} path Path data (sequence of coordinates and corresponding "command" tokens) + * @param {Object} [options] Options object + */ + _setPath: function (path, options) { + this.path = fabric.util.makePathSimpler(Array.isArray(path) ? path : fabric.util.parsePath(path)); + fabric.Polyline.prototype._setPositionDimensions.call(this, options || {}); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx context to render path on + */ + _renderPathCommands: function (ctx) { + var current, // current instruction + subpathStartX = 0, subpathStartY = 0, x = 0, // current x + y = 0, // current y + controlX = 0, // current control point x + controlY = 0, // current control point y + l = -this.pathOffset.x, t = -this.pathOffset.y; + ctx.beginPath(); + for (var i = 0, len = this.path.length; i < len; ++i) { + current = this.path[i]; + switch (current[0] // first letter + ) { + case 'L': // lineto, absolute + x = current[1]; + y = current[2]; + ctx.lineTo(x + l, y + t); + break; + case 'M': // moveTo, absolute + x = current[1]; + y = current[2]; + subpathStartX = x; + subpathStartY = y; + ctx.moveTo(x + l, y + t); + break; + case 'C': // bezierCurveTo, absolute + x = current[5]; + y = current[6]; + controlX = current[3]; + controlY = current[4]; + ctx.bezierCurveTo(current[1] + l, current[2] + t, controlX + l, controlY + t, x + l, y + t); + break; + case 'Q': // quadraticCurveTo, absolute + ctx.quadraticCurveTo(current[1] + l, current[2] + t, current[3] + l, current[4] + t); + x = current[3]; + y = current[4]; + controlX = current[1]; + controlY = current[2]; + break; + case 'z': + case 'Z': + x = subpathStartX; + y = subpathStartY; + ctx.closePath(); + break; + } + } + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx context to render path on + */ + _render: function (ctx) { + this._renderPathCommands(ctx); + this._renderPaintInOrder(ctx); + }, + /** + * Returns string representation of an instance + * @return {String} string representation of an instance + */ + toString: function () { + return ('#'); + }, + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function (propertiesToInclude) { + return extend(this.callSuper('toObject', propertiesToInclude), { + path: this.path.map(function (item) { + return item.slice(); + }), + }); + }, + /** + * Returns dataless object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toDatalessObject: function (propertiesToInclude) { + var o = this.toObject(['sourcePath'].concat(propertiesToInclude)); + if (o.sourcePath) { + delete o.path; + } + return o; + }, + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function () { + var path = fabric.util.joinPath(this.path); + return [ + '\n', + ]; + }, + _getOffsetTransform: function () { + var digits = config.NUM_FRACTION_DIGITS; + return (' translate(' + + toFixed(-this.pathOffset.x, digits) + + ', ' + + toFixed(-this.pathOffset.y, digits) + + ')'); + }, + /** + * Returns svg clipPath representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toClipPathSVG: function (reviver) { + var additionalTransform = this._getOffsetTransform(); + return ('\t' + + this._createBaseClipPathSVGMarkup(this._toSVG(), { + reviver: reviver, + additionalTransform: additionalTransform, + })); + }, + /** + * Returns svg representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toSVG: function (reviver) { + var additionalTransform = this._getOffsetTransform(); + return this._createBaseSVGMarkup(this._toSVG(), { + reviver: reviver, + additionalTransform: additionalTransform, + }); + }, + /* _TO_SVG_END_ */ + /** + * Returns number representation of an instance complexity + * @return {Number} complexity of this instance + */ + complexity: function () { + return this.path.length; + }, + /** + * @private + */ + _calcDimensions: function () { + var aX = [], aY = [], current, // current instruction + subpathStartX = 0, subpathStartY = 0, x = 0, // current x + y = 0, // current y + bounds; + for (var i = 0, len = this.path.length; i < len; ++i) { + current = this.path[i]; + switch (current[0] // first letter + ) { + case 'L': // lineto, absolute + x = current[1]; + y = current[2]; + bounds = []; + break; + case 'M': // moveTo, absolute + x = current[1]; + y = current[2]; + subpathStartX = x; + subpathStartY = y; + bounds = []; + break; + case 'C': // bezierCurveTo, absolute + bounds = fabric.util.getBoundsOfCurve(x, y, current[1], current[2], current[3], current[4], current[5], current[6]); + x = current[5]; + y = current[6]; + break; + case 'Q': // quadraticCurveTo, absolute + bounds = fabric.util.getBoundsOfCurve(x, y, current[1], current[2], current[1], current[2], current[3], current[4]); + x = current[3]; + y = current[4]; + break; + case 'z': + case 'Z': + x = subpathStartX; + y = subpathStartY; + break; + } + bounds.forEach(function (point) { + aX.push(point.x); + aY.push(point.y); + }); + aX.push(x); + aY.push(y); + } + var minX = Math.min(...aX) || 0, minY = Math.min(...aY) || 0, maxX = Math.max(...aX) || 0, maxY = Math.max(...aY) || 0, deltaX = maxX - minX, deltaY = maxY - minY; + return { + left: minX, + top: minY, + width: deltaX, + height: deltaY, + }; + }, + }); /** - * Paint the cached clipPath on the lowerCanvasEl - * @param {CanvasRenderingContext2D} ctx Context to render on + * Creates an instance of fabric.Path from an object + * @static + * @memberOf fabric.Path + * @param {Object} object + * @returns {Promise} */ - drawClipPathOnCanvas: function(ctx) { - var v = this.viewportTransform, path = this.clipPath; - ctx.save(); - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - // DEBUG: uncomment this line, comment the following - // ctx.globalAlpha = 0.4; - ctx.globalCompositeOperation = 'destination-in'; - path.transform(ctx); - ctx.scale(1 / path.zoomX, 1 / path.zoomY); - ctx.drawImage(path._cacheCanvas, -path.cacheTranslationX, -path.cacheTranslationY); - ctx.restore(); - }, - + fabric.Path.fromObject = function (object) { + return fabric.Object._fromObject(fabric.Path, object, { + extraParam: 'path', + }); + }; + /* _FROM_SVG_START_ */ /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Array} objects to render + * List of attribute names to account for when parsing SVG element (used by `fabric.Path.fromElement`) + * @static + * @memberOf fabric.Path + * @see http://www.w3.org/TR/SVG/paths.html#PathElement */ - _renderObjects: function(ctx, objects) { - var i, len; - for (i = 0, len = objects.length; i < len; ++i) { - objects[i] && objects[i].render(ctx); - } - }, - + fabric.Path.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(['d']); /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {string} property 'background' or 'overlay' + * Creates an instance of fabric.Path from an SVG element + * @static + * @memberOf fabric.Path + * @param {SVGElement} element to parse + * @param {Function} callback Callback to invoke when an fabric.Path instance is created + * @param {Object} [options] Options object + * @param {Function} [callback] Options callback invoked after parsing is finished */ - _renderBackgroundOrOverlay: function(ctx, property) { - var fill = this[property + 'Color'], object = this[property + 'Image'], - v = this.viewportTransform, needsVpt = this[property + 'Vpt']; - if (!fill && !object) { - return; - } - if (fill) { - ctx.save(); - ctx.beginPath(); - ctx.moveTo(0, 0); - ctx.lineTo(this.width, 0); - ctx.lineTo(this.width, this.height); - ctx.lineTo(0, this.height); - ctx.closePath(); - ctx.fillStyle = fill.toLive - ? fill.toLive(ctx, this) - : fill; - if (needsVpt) { - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - } - ctx.transform(1, 0, 0, 1, fill.offsetX || 0, fill.offsetY || 0); - var m = fill.gradientTransform || fill.patternTransform; - m && ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); - ctx.fill(); - ctx.restore(); - } - if (object) { - ctx.save(); - if (needsVpt) { - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - } - object.render(ctx); - ctx.restore(); - } - }, - + fabric.Path.fromElement = function (element, callback, options) { + var parsedAttributes = fabric.parseAttributes(element, fabric.Path.ATTRIBUTE_NAMES); + parsedAttributes.fromSVG = true; + callback(new fabric.Path(parsedAttributes.d, extend(parsedAttributes, options))); + }; + /* _FROM_SVG_END_ */ +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), multiplyTransformMatrices = fabric.util.multiplyTransformMatrices, invertTransform = fabric.util.invertTransform, transformPoint = fabric.util.transformPoint, applyTransformToObject = fabric.util.applyTransformToObject, degreesToRadians = fabric.util.degreesToRadians, clone = fabric.util.object.clone; + /** + * Group class + * @class fabric.Group + * @extends fabric.Object + * @mixes fabric.Collection + * @fires layout once layout completes + * @see {@link fabric.Group#initialize} for constructor definition + */ + fabric.Group = fabric.util.createClass(fabric.Object, fabric.Collection, + /** @lends fabric.Group.prototype */ { + /** + * Type of an object + * @type string + * @default + */ + type: 'group', + /** + * Specifies the **layout strategy** for instance + * Used by `getLayoutStrategyResult` to calculate layout + * `fit-content`, `fit-content-lazy`, `fixed`, `clip-path` are supported out of the box + * @type string + * @default + */ + layout: 'fit-content', + /** + * Width of stroke + * @type Number + */ + strokeWidth: 0, + /** + * List of properties to consider when checking if state + * of an object is changed (fabric.Object#hasStateChanged) + * as well as for history (undo/redo) purposes + * @type string[] + */ + stateProperties: fabric.Object.prototype.stateProperties.concat('layout'), + /** + * Used to optimize performance + * set to `false` if you don't need contained objects to be targets of events + * @default + * @type boolean + */ + subTargetCheck: false, + /** + * Used to allow targeting of object inside groups. + * set to true if you want to select an object inside a group.\ + * **REQUIRES** `subTargetCheck` set to true + * @default + * @type boolean + */ + interactive: false, + /** + * Used internally to optimize performance + * Once an object is selected, instance is rendered without the selected object. + * This way instance is cached only once for the entire interaction with the selected object. + * @private + */ + _activeObjects: undefined, + /** + * Constructor + * + * @param {fabric.Object[]} [objects] instance objects + * @param {Object} [options] Options object + * @param {boolean} [objectsRelativeToGroup] true if objects exist in group coordinate plane + * @return {fabric.Group} thisArg + */ + initialize: function (objects, options, objectsRelativeToGroup) { + this._objects = objects || []; + this._activeObjects = []; + this.__objectMonitor = this.__objectMonitor.bind(this); + this.__objectSelectionTracker = this.__objectSelectionMonitor.bind(this, true); + this.__objectSelectionDisposer = this.__objectSelectionMonitor.bind(this, false); + this._firstLayoutDone = false; + // setting angle, skewX, skewY must occur after initial layout + this.callSuper('initialize', Object.assign({}, options, { angle: 0, skewX: 0, skewY: 0 })); + this.forEachObject(function (object) { + this.enterGroup(object, false); + }, this); + this._applyLayoutStrategy({ + type: 'initialization', + options: options, + objectsRelativeToGroup: objectsRelativeToGroup, + }); + }, + /** + * @private + * @param {string} key + * @param {*} value + */ + _set: function (key, value) { + var prev = this[key]; + this.callSuper('_set', key, value); + if (key === 'canvas' && prev !== value) { + this.forEachObject(function (object) { + object._set(key, value); + }); + } + if (key === 'layout' && prev !== value) { + this._applyLayoutStrategy({ + type: 'layout_change', + layout: value, + prevLayout: prev, + }); + } + if (key === 'interactive') { + this.forEachObject(this._watchObject.bind(this, value)); + } + return this; + }, + /** + * @private + */ + _shouldSetNestedCoords: function () { + return this.subTargetCheck; + }, + /** + * Override this method to enhance performance (for groups with a lot of objects). + * If Overriding, be sure not pass illegal objects to group - it will break your app. + * @private + */ + _filterObjectsBeforeEnteringGroup: function (objects) { + return objects.filter(function (object, index, array) { + // can enter AND is the first occurrence of the object in the passed args (to prevent adding duplicates) + return this.canEnterGroup(object) && array.indexOf(object) === index; + }, this); + }, + /** + * Add objects + * @param {...fabric.Object} objects + */ + add: function () { + var allowedObjects = this._filterObjectsBeforeEnteringGroup(Array.from(arguments)); + fabric.Collection.add.call(this, allowedObjects, this._onObjectAdded); + this._onAfterObjectsChange('added', allowedObjects); + }, + /** + * Inserts an object into collection at specified index + * @param {fabric.Object | fabric.Object[]} objects Object to insert + * @param {Number} index Index to insert object at + */ + insertAt: function (objects, index) { + var allowedObjects = this._filterObjectsBeforeEnteringGroup(Array.isArray(objects) ? objects : [objects]); + fabric.Collection.insertAt.call(this, allowedObjects, index, this._onObjectAdded); + this._onAfterObjectsChange('added', allowedObjects); + }, + /** + * Remove objects + * @param {...fabric.Object} objects + * @returns {fabric.Object[]} removed objects + */ + remove: function () { + var removed = fabric.Collection.remove.call(this, arguments, this._onObjectRemoved); + this._onAfterObjectsChange('removed', removed); + return removed; + }, + /** + * Remove all objects + * @returns {fabric.Object[]} removed objects + */ + removeAll: function () { + this._activeObjects = []; + return this.remove.apply(this, this._objects.slice()); + }, + /** + * invalidates layout on object modified + * @private + */ + __objectMonitor: function (opt) { + this._applyLayoutStrategy(Object.assign({}, opt, { + type: 'object_modified', + })); + this._set('dirty', true); + }, + /** + * keeps track of the selected objects + * @private + */ + __objectSelectionMonitor: function (selected, opt) { + var object = opt.target; + if (selected) { + this._activeObjects.push(object); + this._set('dirty', true); + } + else if (this._activeObjects.length > 0) { + var index = this._activeObjects.indexOf(object); + if (index > -1) { + this._activeObjects.splice(index, 1); + this._set('dirty', true); + } + } + }, + /** + * @private + * @param {boolean} watch + * @param {fabric.Object} object + */ + _watchObject: function (watch, object) { + var directive = watch ? 'on' : 'off'; + // make sure we listen only once + watch && this._watchObject(false, object); + object[directive]('changed', this.__objectMonitor); + object[directive]('modified', this.__objectMonitor); + object[directive]('selected', this.__objectSelectionTracker); + object[directive]('deselected', this.__objectSelectionDisposer); + }, + /** + * Checks if object can enter group and logs relevant warnings + * @private + * @param {fabric.Object} object + * @returns + */ + canEnterGroup: function (object) { + if (object === this || this.isDescendantOf(object)) { + // prevent circular object tree + /* _DEV_MODE_START_ */ + console.error('fabric.Group: circular object trees are not supported, this call has no effect'); + /* _DEV_MODE_END_ */ + return false; + } + else if (this._objects.indexOf(object) !== -1) { + // is already in the objects array + /* _DEV_MODE_START_ */ + console.error('fabric.Group: duplicate objects are not supported inside group, this call has no effect'); + /* _DEV_MODE_END_ */ + return false; + } + return true; + }, + /** + * @private + * @param {fabric.Object} object + * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane + * @returns {boolean} true if object entered group + */ + enterGroup: function (object, removeParentTransform) { + if (object.group) { + object.group.remove(object); + } + this._enterGroup(object, removeParentTransform); + return true; + }, + /** + * @private + * @param {fabric.Object} object + * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane + */ + _enterGroup: function (object, removeParentTransform) { + if (removeParentTransform) { + // can this be converted to utils (sendObjectToPlane)? + applyTransformToObject(object, multiplyTransformMatrices(invertTransform(this.calcTransformMatrix()), object.calcTransformMatrix())); + } + this._shouldSetNestedCoords() && object.setCoords(); + object._set('group', this); + object._set('canvas', this.canvas); + this.interactive && this._watchObject(true, object); + var activeObject = this.canvas && + this.canvas.getActiveObject && + this.canvas.getActiveObject(); + // if we are adding the activeObject in a group + if (activeObject && + (activeObject === object || object.isDescendantOf(activeObject))) { + this._activeObjects.push(object); + } + }, + /** + * @private + * @param {fabric.Object} object + * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it + */ + exitGroup: function (object, removeParentTransform) { + this._exitGroup(object, removeParentTransform); + object._set('canvas', undefined); + }, + /** + * @private + * @param {fabric.Object} object + * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it + */ + _exitGroup: function (object, removeParentTransform) { + object._set('group', undefined); + if (!removeParentTransform) { + applyTransformToObject(object, multiplyTransformMatrices(this.calcTransformMatrix(), object.calcTransformMatrix())); + object.setCoords(); + } + this._watchObject(false, object); + var index = this._activeObjects.length > 0 + ? this._activeObjects.indexOf(object) + : -1; + if (index > -1) { + this._activeObjects.splice(index, 1); + } + }, + /** + * @private + * @param {'added'|'removed'} type + * @param {fabric.Object[]} targets + */ + _onAfterObjectsChange: function (type, targets) { + this._applyLayoutStrategy({ + type: type, + targets: targets, + }); + this._set('dirty', true); + }, + /** + * @private + * @param {fabric.Object} object + */ + _onObjectAdded: function (object) { + this.enterGroup(object, true); + object.fire('added', { target: this }); + }, + /** + * @private + * @param {fabric.Object} object + */ + _onRelativeObjectAdded: function (object) { + this.enterGroup(object, false); + object.fire('added', { target: this }); + }, + /** + * @private + * @param {fabric.Object} object + * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it + */ + _onObjectRemoved: function (object, removeParentTransform) { + this.exitGroup(object, removeParentTransform); + object.fire('removed', { target: this }); + }, + /** + * Decide if the object should cache or not. Create its own cache level + * needsItsOwnCache should be used when the object drawing method requires + * a cache step. None of the fabric classes requires it. + * Generally you do not cache objects in groups because the group is already cached. + * @return {Boolean} + */ + shouldCache: function () { + var ownCache = fabric.Object.prototype.shouldCache.call(this); + if (ownCache) { + for (var i = 0; i < this._objects.length; i++) { + if (this._objects[i].willDrawShadow()) { + this.ownCaching = false; + return false; + } + } + } + return ownCache; + }, + /** + * Check if this object or a child object will cast a shadow + * @return {Boolean} + */ + willDrawShadow: function () { + if (fabric.Object.prototype.willDrawShadow.call(this)) { + return true; + } + for (var i = 0; i < this._objects.length; i++) { + if (this._objects[i].willDrawShadow()) { + return true; + } + } + return false; + }, + /** + * Check if instance or its group are caching, recursively up + * @return {Boolean} + */ + isOnACache: function () { + return this.ownCaching || (!!this.group && this.group.isOnACache()); + }, + /** + * Execute the drawing operation for an object on a specified context + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawObject: function (ctx) { + this._renderBackground(ctx); + for (var i = 0; i < this._objects.length; i++) { + this._objects[i].render(ctx); + } + this._drawClipPath(ctx, this.clipPath); + }, + /** + * Check if cache is dirty + */ + isCacheDirty: function (skipCanvas) { + if (this.callSuper('isCacheDirty', skipCanvas)) { + return true; + } + if (!this.statefullCache) { + return false; + } + for (var i = 0; i < this._objects.length; i++) { + if (this._objects[i].isCacheDirty(true)) { + if (this._cacheCanvas) { + // if this group has not a cache canvas there is nothing to clean + var x = this.cacheWidth / this.zoomX, y = this.cacheHeight / this.zoomY; + this._cacheContext.clearRect(-x / 2, -y / 2, x, y); + } + return true; + } + } + return false; + }, + /** + * @override + * @return {Boolean} + */ + setCoords: function () { + this.callSuper('setCoords'); + this._shouldSetNestedCoords() && + this.forEachObject(function (object) { + object.setCoords(); + }); + }, + /** + * Renders instance on a given context + * @param {CanvasRenderingContext2D} ctx context to render instance on + */ + render: function (ctx) { + // used to inform objects not to double opacity + this._transformDone = true; + this.callSuper('render', ctx); + this._transformDone = false; + }, + /** + * @public + * @param {Partial & { layout?: string }} [context] pass values to use for layout calculations + */ + triggerLayout: function (context) { + if (context && context.layout) { + context.prevLayout = this.layout; + this.layout = context.layout; + } + this._applyLayoutStrategy({ type: 'imperative', context: context }); + }, + /** + * @private + * @param {fabric.Object} object + * @param {Point} diff + */ + _adjustObjectPosition: function (object, diff) { + object.set({ + left: object.left + diff.x, + top: object.top + diff.y, + }); + }, + /** + * initial layout logic: + * calculate bbox of objects (if necessary) and translate it according to options received from the constructor (left, top, width, height) + * so it is placed in the center of the bbox received from the constructor + * + * @private + * @param {LayoutContext} context + */ + _applyLayoutStrategy: function (context) { + var isFirstLayout = context.type === 'initialization'; + if (!isFirstLayout && !this._firstLayoutDone) { + // reject layout requests before initialization layout + return; + } + var options = isFirstLayout && context.options; + var initialTransform = options && { + angle: options.angle || 0, + skewX: options.skewX || 0, + skewY: options.skewY || 0, + }; + var center = this.getRelativeCenterPoint(); + var result = this.getLayoutStrategyResult(this.layout, this._objects.concat(), context); + if (result) { + // handle positioning + var newCenter = new Point(result.centerX, result.centerY); + var vector = center + .subtract(newCenter) + .add(new Point(result.correctionX || 0, result.correctionY || 0)); + var diff = transformPoint(vector, invertTransform(this.calcOwnMatrix()), true); + // set dimensions + this.set({ width: result.width, height: result.height }); + // adjust objects to account for new center + !context.objectsRelativeToGroup && + this.forEachObject(function (object) { + this._adjustObjectPosition(object, diff); + }, this); + // clip path as well + !isFirstLayout && + this.layout !== 'clip-path' && + this.clipPath && + !this.clipPath.absolutePositioned && + this._adjustObjectPosition(this.clipPath, diff); + if (!newCenter.eq(center) || initialTransform) { + // set position + this.setPositionByOrigin(newCenter, 'center', 'center'); + initialTransform && this.set(initialTransform); + this.setCoords(); + } + } + else if (isFirstLayout) { + // fill `result` with initial values for the layout hook + result = { + centerX: center.x, + centerY: center.y, + width: this.width, + height: this.height, + }; + initialTransform && this.set(initialTransform); + } + else { + // no `result` so we return + return; + } + // flag for next layouts + this._firstLayoutDone = true; + // fire layout hook and event (event will fire only for layouts after initialization layout) + this.onLayout(context, result); + this.fire('layout', { + context: context, + result: result, + diff: diff, + }); + // recursive up + if (this.group && this.group._applyLayoutStrategy) { + // append the path recursion to context + if (!context.path) { + context.path = []; + } + context.path.push(this); + // all parents should invalidate their layout + this.group._applyLayoutStrategy(context); + } + }, + /** + * Override this method to customize layout. + * If you need to run logic once layout completes use `onLayout` + * @public + * + * @typedef {'initialization'|'object_modified'|'added'|'removed'|'layout_change'|'imperative'} LayoutContextType + * + * @typedef LayoutContext context object with data regarding what triggered the call + * @property {LayoutContextType} type + * @property {fabric.Object[]} [path] array of objects starting from the object that triggered the call to the current one + * + * @typedef LayoutResult positioning and layout data **relative** to instance's parent + * @property {number} centerX new centerX as measured by the containing plane (same as `left` with `originX` set to `center`) + * @property {number} centerY new centerY as measured by the containing plane (same as `top` with `originY` set to `center`) + * @property {number} [correctionX] correctionX to translate objects by, measured as `centerX` + * @property {number} [correctionY] correctionY to translate objects by, measured as `centerY` + * @property {number} width + * @property {number} height + * + * @param {string} layoutDirective + * @param {fabric.Object[]} objects + * @param {LayoutContext} context + * @returns {LayoutResult | undefined} + */ + getLayoutStrategyResult: function (layoutDirective, objects, context) { + // eslint-disable-line no-unused-vars + // `fit-content-lazy` performance enhancement + // skip if instance had no objects before the `added` event because it may have kept layout after removing all previous objects + if (layoutDirective === 'fit-content-lazy' && + context.type === 'added' && + objects.length > context.targets.length) { + // calculate added objects' bbox with existing bbox + var addedObjects = context.targets.concat(this); + return this.prepareBoundingBox(layoutDirective, addedObjects, context); + } + else if (layoutDirective === 'fit-content' || + layoutDirective === 'fit-content-lazy' || + (layoutDirective === 'fixed' && + (context.type === 'initialization' || + context.type === 'imperative'))) { + return this.prepareBoundingBox(layoutDirective, objects, context); + } + else if (layoutDirective === 'clip-path' && this.clipPath) { + var clipPath = this.clipPath; + var clipPathSizeAfter = clipPath._getTransformedDimensions(); + if (clipPath.absolutePositioned && + (context.type === 'initialization' || + context.type === 'layout_change')) { + // we want the center point to exist in group's containing plane + var clipPathCenter = clipPath.getCenterPoint(); + if (this.group) { + // send point from canvas plane to group's containing plane + var inv = invertTransform(this.group.calcTransformMatrix()); + clipPathCenter = transformPoint(clipPathCenter, inv); + } + return { + centerX: clipPathCenter.x, + centerY: clipPathCenter.y, + width: clipPathSizeAfter.x, + height: clipPathSizeAfter.y, + }; + } + else if (!clipPath.absolutePositioned) { + var center; + var clipPathRelativeCenter = clipPath.getRelativeCenterPoint(), + // we want the center point to exist in group's containing plane, so we send it upwards + clipPathCenter = transformPoint(clipPathRelativeCenter, this.calcOwnMatrix(), true); + if (context.type === 'initialization' || + context.type === 'layout_change') { + var bbox = this.prepareBoundingBox(layoutDirective, objects, context) || + {}; + center = new Point(bbox.centerX || 0, bbox.centerY || 0); + return { + centerX: center.x + clipPathCenter.x, + centerY: center.y + clipPathCenter.y, + correctionX: bbox.correctionX - clipPathCenter.x, + correctionY: bbox.correctionY - clipPathCenter.y, + width: clipPath.width, + height: clipPath.height, + }; + } + else { + center = this.getRelativeCenterPoint(); + return { + centerX: center.x + clipPathCenter.x, + centerY: center.y + clipPathCenter.y, + width: clipPathSizeAfter.x, + height: clipPathSizeAfter.y, + }; + } + } + } + else if (layoutDirective === 'svg' && + context.type === 'initialization') { + var bbox = this.getObjectsBoundingBox(objects, true) || {}; + return Object.assign(bbox, { + correctionX: -bbox.offsetX || 0, + correctionY: -bbox.offsetY || 0, + }); + } + }, + /** + * Override this method to customize layout. + * A wrapper around {@link fabric.Group#getObjectsBoundingBox} + * @public + * @param {string} layoutDirective + * @param {fabric.Object[]} objects + * @param {LayoutContext} context + * @returns {LayoutResult | undefined} + */ + prepareBoundingBox: function (layoutDirective, objects, context) { + if (context.type === 'initialization') { + return this.prepareInitialBoundingBox(layoutDirective, objects, context); + } + else if (context.type === 'imperative' && context.context) { + return Object.assign(this.getObjectsBoundingBox(objects) || {}, context.context); + } + else { + return this.getObjectsBoundingBox(objects); + } + }, + /** + * Calculates center taking into account originX, originY while not being sure that width/height are initialized + * @public + * @param {string} layoutDirective + * @param {fabric.Object[]} objects + * @param {LayoutContext} context + * @returns {LayoutResult | undefined} + */ + prepareInitialBoundingBox: function (layoutDirective, objects, context) { + var options = context.options || {}, hasX = typeof options.left === 'number', hasY = typeof options.top === 'number', hasWidth = typeof options.width === 'number', hasHeight = typeof options.height === 'number'; + // performance enhancement + // skip layout calculation if bbox is defined + if ((hasX && + hasY && + hasWidth && + hasHeight && + context.objectsRelativeToGroup) || + objects.length === 0) { + // return nothing to skip layout + return; + } + var bbox = this.getObjectsBoundingBox(objects) || {}; + var width = hasWidth ? this.width : bbox.width || 0, height = hasHeight ? this.height : bbox.height || 0, calculatedCenter = new Point(bbox.centerX || 0, bbox.centerY || 0), origin = new Point(this.resolveOriginX(this.originX), this.resolveOriginY(this.originY)), size = new Point(width, height), strokeWidthVector = this._getTransformedDimensions({ + width: 0, + height: 0, + }), sizeAfter = this._getTransformedDimensions({ + width: width, + height: height, + strokeWidth: 0, + }), bboxSizeAfter = this._getTransformedDimensions({ + width: bbox.width, + height: bbox.height, + strokeWidth: 0, + }), rotationCorrection = new Point(0, 0); + // calculate center and correction + var originT = origin.scalarAdd(0.5); + var originCorrection = sizeAfter.multiply(originT); + var centerCorrection = new Point(hasWidth ? bboxSizeAfter.x / 2 : originCorrection.x, hasHeight ? bboxSizeAfter.y / 2 : originCorrection.y); + var center = new Point(hasX + ? this.left - (sizeAfter.x + strokeWidthVector.x) * origin.x + : calculatedCenter.x - centerCorrection.x, hasY + ? this.top - (sizeAfter.y + strokeWidthVector.y) * origin.y + : calculatedCenter.y - centerCorrection.y); + var offsetCorrection = new Point(hasX + ? center.x - + calculatedCenter.x + + bboxSizeAfter.x * (hasWidth ? 0.5 : 0) + : -(hasWidth + ? (sizeAfter.x - strokeWidthVector.x) * 0.5 + : sizeAfter.x * originT.x), hasY + ? center.y - + calculatedCenter.y + + bboxSizeAfter.y * (hasHeight ? 0.5 : 0) + : -(hasHeight + ? (sizeAfter.y - strokeWidthVector.y) * 0.5 + : sizeAfter.y * originT.y)).add(rotationCorrection); + var correction = new Point(hasWidth ? -sizeAfter.x / 2 : 0, hasHeight ? -sizeAfter.y / 2 : 0).add(offsetCorrection); + return { + centerX: center.x, + centerY: center.y, + correctionX: correction.x, + correctionY: correction.y, + width: size.x, + height: size.y, + }; + }, + /** + * Calculate the bbox of objects relative to instance's containing plane + * @public + * @param {fabric.Object[]} objects + * @returns {LayoutResult | null} bounding box + */ + getObjectsBoundingBox: function (objects, ignoreOffset) { + if (objects.length === 0) { + return null; + } + var objCenter, sizeVector, min, max, a, b; + objects.forEach(function (object, i) { + objCenter = object.getRelativeCenterPoint(); + sizeVector = object._getTransformedDimensions().scalarDivide(2); + if (object.angle) { + var rad = degreesToRadians(object.angle), sin = Math.abs(fabric.util.sin(rad)), cos = Math.abs(fabric.util.cos(rad)), rx = sizeVector.x * cos + sizeVector.y * sin, ry = sizeVector.x * sin + sizeVector.y * cos; + sizeVector = new Point(rx, ry); + } + a = objCenter.subtract(sizeVector); + b = objCenter.add(sizeVector); + if (i === 0) { + min = new Point(Math.min(a.x, b.x), Math.min(a.y, b.y)); + max = new Point(Math.max(a.x, b.x), Math.max(a.y, b.y)); + } + else { + min.setXY(Math.min(min.x, a.x, b.x), Math.min(min.y, a.y, b.y)); + max.setXY(Math.max(max.x, a.x, b.x), Math.max(max.y, a.y, b.y)); + } + }); + var size = max.subtract(min), relativeCenter = ignoreOffset + ? size.scalarDivide(2) + : min.midPointFrom(max), + // we send `relativeCenter` up to group's containing plane + offset = transformPoint(min, this.calcOwnMatrix()), center = transformPoint(relativeCenter, this.calcOwnMatrix()); + return { + offsetX: offset.x, + offsetY: offset.y, + centerX: center.x, + centerY: center.y, + width: size.x, + height: size.y, + }; + }, + /** + * Hook that is called once layout has completed. + * Provided for layout customization, override if necessary. + * Complements `getLayoutStrategyResult`, which is called at the beginning of layout. + * @public + * @param {LayoutContext} context layout context + * @param {LayoutResult} result layout result + */ + onLayout: function ( /* context, result */) { + // override by subclass + }, + /** + * + * @private + * @param {'toObject'|'toDatalessObject'} [method] + * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @returns {fabric.Object[]} serialized objects + */ + __serializeObjects: function (method, propertiesToInclude) { + var _includeDefaultValues = this.includeDefaultValues; + return this._objects + .filter(function (obj) { + return !obj.excludeFromExport; + }) + .map(function (obj) { + var originalDefaults = obj.includeDefaultValues; + obj.includeDefaultValues = _includeDefaultValues; + var data = obj[method || 'toObject'](propertiesToInclude); + obj.includeDefaultValues = originalDefaults; + //delete data.version; + return data; + }); + }, + /** + * Returns object representation of an instance + * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function (propertiesToInclude) { + var obj = this.callSuper('toObject', ['layout', 'subTargetCheck', 'interactive'].concat(propertiesToInclude)); + obj.objects = this.__serializeObjects('toObject', propertiesToInclude); + return obj; + }, + toString: function () { + return '#'; + }, + dispose: function () { + this._activeObjects = []; + this.forEachObject(function (object) { + this._watchObject(false, object); + object.dispose && object.dispose(); + }, this); + this.callSuper('dispose'); + }, + /* _TO_SVG_START_ */ + /** + * @private + */ + _createSVGBgRect: function (reviver) { + if (!this.backgroundColor) { + return ''; + } + var fillStroke = fabric.Rect.prototype._toSVG.call(this, reviver); + var commons = fillStroke.indexOf('COMMON_PARTS'); + fillStroke[commons] = 'for="group" '; + return fillStroke.join(''); + }, + /** + * Returns svg representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + _toSVG: function (reviver) { + var svgString = ['\n']; + var bg = this._createSVGBgRect(reviver); + bg && svgString.push('\t\t', bg); + for (var i = 0; i < this._objects.length; i++) { + svgString.push('\t\t', this._objects[i].toSVG(reviver)); + } + svgString.push('\n'); + return svgString; + }, + /** + * Returns styles-string for svg-export, specific version for group + * @return {String} + */ + getSvgStyles: function () { + var opacity = typeof this.opacity !== 'undefined' && this.opacity !== 1 + ? 'opacity: ' + this.opacity + ';' + : '', visibility = this.visible ? '' : ' visibility: hidden;'; + return [opacity, this.getSvgFilter(), visibility].join(''); + }, + /** + * Returns svg clipPath representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toClipPathSVG: function (reviver) { + var svgString = []; + var bg = this._createSVGBgRect(reviver); + bg && svgString.push('\t', bg); + for (var i = 0; i < this._objects.length; i++) { + svgString.push('\t', this._objects[i].toClipPathSVG(reviver)); + } + return this._createBaseClipPathSVGMarkup(svgString, { + reviver: reviver, + }); + }, + /* _TO_SVG_END_ */ + }); /** + * @todo support loading from svg * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderBackground: function(ctx) { - this._renderBackgroundOrOverlay(ctx, 'background'); - }, - + * @static + * @memberOf fabric.Group + * @param {Object} object Object to create a group from + * @returns {Promise} + */ + fabric.Group.fromObject = function (object) { + var objects = object.objects || [], options = clone(object, true); + delete options.objects; + return Promise.all([ + fabric.util.enlivenObjects(objects), + fabric.util.enlivenObjectEnlivables(options), + ]).then(function (enlivened) { + return new fabric.Group(enlivened[0], Object.assign(options, enlivened[1]), true); + }); + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}); + /** + * Group class + * @class fabric.ActiveSelection + * @extends fabric.Group + * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#groups} + * @see {@link fabric.ActiveSelection#initialize} for constructor definition + */ + fabric.ActiveSelection = fabric.util.createClass(fabric.Group, + /** @lends fabric.ActiveSelection.prototype */ { + /** + * Type of an object + * @type String + * @default + */ + type: 'activeSelection', + /** + * @override + */ + layout: 'fit-content', + /** + * @override + */ + subTargetCheck: false, + /** + * @override + */ + interactive: false, + /** + * Constructor + * + * @param {fabric.Object[]} [objects] instance objects + * @param {Object} [options] Options object + * @param {boolean} [objectsRelativeToGroup] true if objects exist in group coordinate plane + * @return {fabric.ActiveSelection} thisArg + */ + initialize: function (objects, options, objectsRelativeToGroup) { + this.callSuper('initialize', objects, options, objectsRelativeToGroup); + this.setCoords(); + }, + /** + * @private + */ + _shouldSetNestedCoords: function () { + return true; + }, + /** + * @private + * @param {fabric.Object} object + * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane + * @returns {boolean} true if object entered group + */ + enterGroup: function (object, removeParentTransform) { + if (object.group) { + // save ref to group for later in order to return to it + var parent = object.group; + parent._exitGroup(object); + object.__owningGroup = parent; + } + this._enterGroup(object, removeParentTransform); + return true; + }, + /** + * we want objects to retain their canvas ref when exiting instance + * @private + * @param {fabric.Object} object + * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it + */ + exitGroup: function (object, removeParentTransform) { + this._exitGroup(object, removeParentTransform); + var parent = object.__owningGroup; + if (parent) { + // return to owning group + parent.enterGroup(object); + delete object.__owningGroup; + } + }, + /** + * @private + * @param {'added'|'removed'} type + * @param {fabric.Object[]} targets + */ + _onAfterObjectsChange: function (type, targets) { + var groups = []; + targets.forEach(function (object) { + object.group && + !groups.includes(object.group) && + groups.push(object.group); + }); + if (type === 'removed') { + // invalidate groups' layout and mark as dirty + groups.forEach(function (group) { + group._onAfterObjectsChange('added', targets); + }); + } + else { + // mark groups as dirty + groups.forEach(function (group) { + group._set('dirty', true); + }); + } + }, + /** + * If returns true, deselection is cancelled. + * @since 2.0.0 + * @return {Boolean} [cancel] + */ + onDeselect: function () { + this.removeAll(); + return false; + }, + /** + * Returns string representation of a group + * @return {String} + */ + toString: function () { + return '#'; + }, + /** + * Decide if the object should cache or not. Create its own cache level + * objectCaching is a global flag, wins over everything + * needsItsOwnCache should be used when the object drawing method requires + * a cache step. None of the fabric classes requires it. + * Generally you do not cache objects in groups because the group outside is cached. + * @return {Boolean} + */ + shouldCache: function () { + return false; + }, + /** + * Check if this group or its parent group are caching, recursively up + * @return {Boolean} + */ + isOnACache: function () { + return false; + }, + /** + * Renders controls and borders for the object + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Object} [styleOverride] properties to override the object style + * @param {Object} [childrenOverride] properties to override the children overrides + */ + _renderControls: function (ctx, styleOverride, childrenOverride) { + ctx.save(); + ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1; + this.callSuper('_renderControls', ctx, styleOverride); + var options = Object.assign({ hasControls: false }, childrenOverride, { + forActiveSelection: true, + }); + for (var i = 0; i < this._objects.length; i++) { + this._objects[i]._renderControls(ctx, options); + } + ctx.restore(); + }, + }); /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderOverlay: function(ctx) { - this._renderBackgroundOrOverlay(ctx, 'overlay'); - }, - + * Returns {@link fabric.ActiveSelection} instance from an object representation + * @static + * @memberOf fabric.ActiveSelection + * @param {Object} object Object to create a group from + * @returns {Promise} + */ + fabric.ActiveSelection.fromObject = function (object) { + var objects = object.objects, options = fabric.util.object.clone(object, true); + delete options.objects; + return fabric.util + .enlivenObjects(objects) + .then(function (enlivenedObjects) { + return new fabric.ActiveSelection(enlivenedObjects, options, true); + }); + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric, extend = fabric.util.object.extend; + /** + * Image class + * @class fabric.Image + * @extends fabric.Object + * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#images} + * @see {@link fabric.Image#initialize} for constructor definition + */ + fabric.Image = fabric.util.createClass(fabric.Object, + /** @lends fabric.Image.prototype */ { + /** + * Type of an object + * @type String + * @default + */ + type: 'image', + /** + * Width of a stroke. + * For image quality a stroke multiple of 2 gives better results. + * @type Number + * @default + */ + strokeWidth: 0, + /** + * When calling {@link fabric.Image.getSrc}, return value from element src with `element.getAttribute('src')`. + * This allows for relative urls as image src. + * @since 2.7.0 + * @type Boolean + * @default + */ + srcFromAttribute: false, + /** + * private + * contains last value of scaleX to detect + * if the Image got resized after the last Render + * @type Number + */ + _lastScaleX: 1, + /** + * private + * contains last value of scaleY to detect + * if the Image got resized after the last Render + * @type Number + */ + _lastScaleY: 1, + /** + * private + * contains last value of scaling applied by the apply filter chain + * @type Number + */ + _filterScalingX: 1, + /** + * private + * contains last value of scaling applied by the apply filter chain + * @type Number + */ + _filterScalingY: 1, + /** + * minimum scale factor under which any resizeFilter is triggered to resize the image + * 0 will disable the automatic resize. 1 will trigger automatically always. + * number bigger than 1 are not implemented yet. + * @type Number + */ + minimumScaleTrigger: 0.5, + /** + * List of properties to consider when checking if + * state of an object is changed ({@link fabric.Object#hasStateChanged}) + * as well as for history (undo/redo) purposes + * @type Array + */ + stateProperties: fabric.Object.prototype.stateProperties.concat('cropX', 'cropY'), + /** + * List of properties to consider when checking if cache needs refresh + * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single + * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty + * and refreshed at the next render + * @type Array + */ + cacheProperties: fabric.Object.prototype.cacheProperties.concat('cropX', 'cropY'), + /** + * key used to retrieve the texture representing this image + * @since 2.0.0 + * @type String + * @default + */ + cacheKey: '', + /** + * Image crop in pixels from original image size. + * @since 2.0.0 + * @type Number + * @default + */ + cropX: 0, + /** + * Image crop in pixels from original image size. + * @since 2.0.0 + * @type Number + * @default + */ + cropY: 0, + /** + * Indicates whether this canvas will use image smoothing when painting this image. + * Also influence if the cacheCanvas for this image uses imageSmoothing + * @since 4.0.0-beta.11 + * @type Boolean + * @default + */ + imageSmoothing: true, + /** + * Constructor + * Image can be initialized with any canvas drawable or a string. + * The string should be a url and will be loaded as an image. + * Canvas and Image element work out of the box, while videos require extra code to work. + * Please check video element events for seeking. + * @param {HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | String} element Image element + * @param {Object} [options] Options object + * @return {fabric.Image} thisArg + */ + initialize: function (element, options) { + options || (options = {}); + this.filters = []; + this.cacheKey = 'texture' + fabric.Object.__uid++; + this.callSuper('initialize', options); + this._initElement(element, options); + }, + /** + * Returns image element which this instance if based on + * @return {HTMLImageElement} Image element + */ + getElement: function () { + return this._element || {}; + }, + /** + * Sets image element for this instance to a specified one. + * If filters defined they are applied to new image. + * You might need to call `canvas.renderAll` and `object.setCoords` after replacing, to render new image and update controls area. + * @param {HTMLImageElement} element + * @param {Object} [options] Options object + * @return {fabric.Image} thisArg + * @chainable + */ + setElement: function (element, options) { + this.removeTexture(this.cacheKey); + this.removeTexture(this.cacheKey + '_filtered'); + this._element = element; + this._originalElement = element; + this._initConfig(options); + element.classList.add(fabric.Image.CSS_CANVAS); + if (this.filters.length !== 0) { + this.applyFilters(); + } + // resizeFilters work on the already filtered copy. + // we need to apply resizeFilters AFTER normal filters. + // applyResizeFilters is run more often than normal filters + // and is triggered by user interactions rather than dev code + if (this.resizeFilter) { + this.applyResizeFilters(); + } + return this; + }, + /** + * Delete a single texture if in webgl mode + */ + removeTexture: function (key) { + var backend = fabric.filterBackend; + if (backend && backend.evictCachesForKey) { + backend.evictCachesForKey(key); + } + }, + /** + * Delete textures, reference to elements and eventually JSDOM cleanup + */ + dispose: function () { + this.callSuper('dispose'); + this.removeTexture(this.cacheKey); + this.removeTexture(this.cacheKey + '_filtered'); + this._cacheContext = undefined; + ['_originalElement', '_element', '_filteredEl', '_cacheCanvas'].forEach(function (element) { + fabric.util.cleanUpJsdomNode(this[element]); + this[element] = undefined; + }.bind(this)); + }, + /** + * Get the crossOrigin value (of the corresponding image element) + */ + getCrossOrigin: function () { + return (this._originalElement && (this._originalElement.crossOrigin || null)); + }, + /** + * Returns original size of an image + * @return {Object} Object with "width" and "height" properties + */ + getOriginalSize: function () { + var element = this.getElement(); + return { + width: element.naturalWidth || element.width, + height: element.naturalHeight || element.height, + }; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _stroke: function (ctx) { + if (!this.stroke || this.strokeWidth === 0) { + return; + } + var w = this.width / 2, h = this.height / 2; + ctx.beginPath(); + ctx.moveTo(-w, -h); + ctx.lineTo(w, -h); + ctx.lineTo(w, h); + ctx.lineTo(-w, h); + ctx.lineTo(-w, -h); + ctx.closePath(); + }, + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toObject: function (propertiesToInclude) { + var filters = []; + this.filters.forEach(function (filterObj) { + if (filterObj) { + filters.push(filterObj.toObject()); + } + }); + var object = extend(this.callSuper('toObject', ['cropX', 'cropY'].concat(propertiesToInclude)), { + src: this.getSrc(), + crossOrigin: this.getCrossOrigin(), + filters: filters, + }); + if (this.resizeFilter) { + object.resizeFilter = this.resizeFilter.toObject(); + } + return object; + }, + /** + * Returns true if an image has crop applied, inspecting values of cropX,cropY,width,height. + * @return {Boolean} + */ + hasCrop: function () { + return (this.cropX || + this.cropY || + this.width < this._element.width || + this.height < this._element.height); + }, + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function () { + var svgString = [], imageMarkup = [], strokeSvg, element = this._element, x = -this.width / 2, y = -this.height / 2, clipPath = '', imageRendering = ''; + if (!element) { + return []; + } + if (this.hasCrop()) { + var clipPathId = fabric.Object.__uid++; + svgString.push('\n', '\t\n', '\n'); + clipPath = ' clip-path="url(#imageCrop_' + clipPathId + ')" '; + } + if (!this.imageSmoothing) { + imageRendering = '" image-rendering="optimizeSpeed'; + } + imageMarkup.push('\t\n'); + if (this.stroke || this.strokeDashArray) { + var origFill = this.fill; + this.fill = null; + strokeSvg = [ + '\t\n', + ]; + this.fill = origFill; + } + if (this.paintFirst !== 'fill') { + svgString = svgString.concat(strokeSvg, imageMarkup); + } + else { + svgString = svgString.concat(imageMarkup, strokeSvg); + } + return svgString; + }, + /* _TO_SVG_END_ */ + /** + * Returns source of an image + * @param {Boolean} filtered indicates if the src is needed for svg + * @return {String} Source of an image + */ + getSrc: function (filtered) { + var element = filtered ? this._element : this._originalElement; + if (element) { + if (element.toDataURL) { + return element.toDataURL(); + } + if (this.srcFromAttribute) { + return element.getAttribute('src'); + } + else { + return element.src; + } + } + else { + return this.src || ''; + } + }, + /** + * Loads and sets source of an image\ + * **IMPORTANT**: It is recommended to abort loading tasks before calling this method to prevent race conditions and unnecessary networking + * @param {String} src Source string (URL) + * @param {Object} [options] Options object + * @param {AbortSignal} [options.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @param {String} [options.crossOrigin] crossOrigin value (one of "", "anonymous", "use-credentials") + * @see https://developer.mozilla.org/en-US/docs/HTML/CORS_settings_attributes + * @return {Promise} thisArg + */ + setSrc: function (src, options) { + var _this = this; + return fabric.util.loadImage(src, options).then(function (img) { + _this.setElement(img, options); + _this._setWidthHeight(); + return _this; + }); + }, + /** + * Returns string representation of an instance + * @return {String} String representation of an instance + */ + toString: function () { + return '#'; + }, + applyResizeFilters: function () { + var filter = this.resizeFilter, minimumScale = this.minimumScaleTrigger, objectScale = this.getTotalObjectScaling(), scaleX = objectScale.x, scaleY = objectScale.y, elementToFilter = this._filteredEl || this._originalElement; + if (this.group) { + this.set('dirty', true); + } + if (!filter || (scaleX > minimumScale && scaleY > minimumScale)) { + this._element = elementToFilter; + this._filterScalingX = 1; + this._filterScalingY = 1; + this._lastScaleX = scaleX; + this._lastScaleY = scaleY; + return; + } + if (!fabric.filterBackend) { + fabric.filterBackend = fabric.initFilterBackend(); + } + var canvasEl = fabric.util.createCanvasElement(), cacheKey = this._filteredEl + ? this.cacheKey + '_filtered' + : this.cacheKey, sourceWidth = elementToFilter.width, sourceHeight = elementToFilter.height; + canvasEl.width = sourceWidth; + canvasEl.height = sourceHeight; + this._element = canvasEl; + this._lastScaleX = filter.scaleX = scaleX; + this._lastScaleY = filter.scaleY = scaleY; + fabric.filterBackend.applyFilters([filter], elementToFilter, sourceWidth, sourceHeight, this._element, cacheKey); + this._filterScalingX = canvasEl.width / this._originalElement.width; + this._filterScalingY = canvasEl.height / this._originalElement.height; + }, + /** + * Applies filters assigned to this image (from "filters" array) or from filter param + * @method applyFilters + * @param {Array} filters to be applied + * @param {Boolean} forResizing specify if the filter operation is a resize operation + * @return {thisArg} return the fabric.Image object + * @chainable + */ + applyFilters: function (filters) { + filters = filters || this.filters || []; + filters = filters.filter(function (filter) { + return filter && !filter.isNeutralState(); + }); + this.set('dirty', true); + // needs to clear out or WEBGL will not resize correctly + this.removeTexture(this.cacheKey + '_filtered'); + if (filters.length === 0) { + this._element = this._originalElement; + this._filteredEl = null; + this._filterScalingX = 1; + this._filterScalingY = 1; + return this; + } + var imgElement = this._originalElement, sourceWidth = imgElement.naturalWidth || imgElement.width, sourceHeight = imgElement.naturalHeight || imgElement.height; + if (this._element === this._originalElement) { + // if the element is the same we need to create a new element + var canvasEl = fabric.util.createCanvasElement(); + canvasEl.width = sourceWidth; + canvasEl.height = sourceHeight; + this._element = canvasEl; + this._filteredEl = canvasEl; + } + else { + // clear the existing element to get new filter data + // also dereference the eventual resized _element + this._element = this._filteredEl; + this._filteredEl + .getContext('2d') + .clearRect(0, 0, sourceWidth, sourceHeight); + // we also need to resize again at next renderAll, so remove saved _lastScaleX/Y + this._lastScaleX = 1; + this._lastScaleY = 1; + } + if (!fabric.filterBackend) { + fabric.filterBackend = fabric.initFilterBackend(); + } + fabric.filterBackend.applyFilters(filters, this._originalElement, sourceWidth, sourceHeight, this._element, this.cacheKey); + if (this._originalElement.width !== this._element.width || + this._originalElement.height !== this._element.height) { + this._filterScalingX = + this._element.width / this._originalElement.width; + this._filterScalingY = + this._element.height / this._originalElement.height; + } + return this; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function (ctx) { + ctx.imageSmoothingEnabled = this.imageSmoothing; + if (this.isMoving !== true && + this.resizeFilter && + this._needsResize()) { + this.applyResizeFilters(); + } + this._stroke(ctx); + this._renderPaintInOrder(ctx); + }, + /** + * Paint the cached copy of the object on the target context. + * it will set the imageSmoothing for the draw operation + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawCacheOnCanvas: function (ctx) { + ctx.imageSmoothingEnabled = this.imageSmoothing; + fabric.Object.prototype.drawCacheOnCanvas.call(this, ctx); + }, + /** + * Decide if the object should cache or not. Create its own cache level + * needsItsOwnCache should be used when the object drawing method requires + * a cache step. None of the fabric classes requires it. + * Generally you do not cache objects in groups because the group outside is cached. + * This is the special image version where we would like to avoid caching where possible. + * Essentially images do not benefit from caching. They may require caching, and in that + * case we do it. Also caching an image usually ends in a loss of details. + * A full performance audit should be done. + * @return {Boolean} + */ + shouldCache: function () { + return this.needsItsOwnCache(); + }, + _renderFill: function (ctx) { + var elementToDraw = this._element; + if (!elementToDraw) { + return; + } + var scaleX = this._filterScalingX, scaleY = this._filterScalingY, w = this.width, h = this.height, min = Math.min, max = Math.max, + // crop values cannot be lesser than 0. + cropX = max(this.cropX, 0), cropY = max(this.cropY, 0), elWidth = elementToDraw.naturalWidth || elementToDraw.width, elHeight = elementToDraw.naturalHeight || elementToDraw.height, sX = cropX * scaleX, sY = cropY * scaleY, + // the width height cannot exceed element width/height, starting from the crop offset. + sW = min(w * scaleX, elWidth - sX), sH = min(h * scaleY, elHeight - sY), x = -w / 2, y = -h / 2, maxDestW = min(w, elWidth / scaleX - cropX), maxDestH = min(h, elHeight / scaleY - cropY); + elementToDraw && + ctx.drawImage(elementToDraw, sX, sY, sW, sH, x, y, maxDestW, maxDestH); + }, + /** + * needed to check if image needs resize + * @private + */ + _needsResize: function () { + var scale = this.getTotalObjectScaling(); + return scale.x !== this._lastScaleX || scale.y !== this._lastScaleY; + }, + /** + * @private + */ + _resetWidthHeight: function () { + this.set(this.getOriginalSize()); + }, + /** + * The Image class's initialization method. This method is automatically + * called by the constructor. + * @private + * @param {HTMLImageElement|String} element The element representing the image + * @param {Object} [options] Options object + */ + _initElement: function (element, options) { + this.setElement(fabric.document.getElementById(element) || element, options); + }, + /** + * @private + * @param {Object} [options] Options object + */ + _initConfig: function (options) { + options || (options = {}); + this.setOptions(options); + this._setWidthHeight(options); + }, + /** + * @private + * Set the width and the height of the image object, using the element or the + * options. + * @param {Object} [options] Object with width/height properties + */ + _setWidthHeight: function (options) { + options || (options = {}); + var el = this.getElement(); + this.width = options.width || el.naturalWidth || el.width || 0; + this.height = options.height || el.naturalHeight || el.height || 0; + }, + /** + * Calculate offset for center and scale factor for the image in order to respect + * the preserveAspectRatio attribute + * @private + * @return {Object} + */ + parsePreserveAspectRatioAttribute: function () { + var pAR = fabric.util.parsePreserveAspectRatioAttribute(this.preserveAspectRatio || ''), rWidth = this._element.width, rHeight = this._element.height, scaleX = 1, scaleY = 1, offsetLeft = 0, offsetTop = 0, cropX = 0, cropY = 0, offset, pWidth = this.width, pHeight = this.height, parsedAttributes = { width: pWidth, height: pHeight }; + if (pAR && (pAR.alignX !== 'none' || pAR.alignY !== 'none')) { + if (pAR.meetOrSlice === 'meet') { + scaleX = scaleY = fabric.util.findScaleToFit(this._element, parsedAttributes); + offset = (pWidth - rWidth * scaleX) / 2; + if (pAR.alignX === 'Min') { + offsetLeft = -offset; + } + if (pAR.alignX === 'Max') { + offsetLeft = offset; + } + offset = (pHeight - rHeight * scaleY) / 2; + if (pAR.alignY === 'Min') { + offsetTop = -offset; + } + if (pAR.alignY === 'Max') { + offsetTop = offset; + } + } + if (pAR.meetOrSlice === 'slice') { + scaleX = scaleY = fabric.util.findScaleToCover(this._element, parsedAttributes); + offset = rWidth - pWidth / scaleX; + if (pAR.alignX === 'Mid') { + cropX = offset / 2; + } + if (pAR.alignX === 'Max') { + cropX = offset; + } + offset = rHeight - pHeight / scaleY; + if (pAR.alignY === 'Mid') { + cropY = offset / 2; + } + if (pAR.alignY === 'Max') { + cropY = offset; + } + rWidth = pWidth / scaleX; + rHeight = pHeight / scaleY; + } + } + else { + scaleX = pWidth / rWidth; + scaleY = pHeight / rHeight; + } + return { + width: rWidth, + height: rHeight, + scaleX: scaleX, + scaleY: scaleY, + offsetLeft: offsetLeft, + offsetTop: offsetTop, + cropX: cropX, + cropY: cropY, + }; + }, + }); /** - * Returns coordinates of a center of canvas. - * Returned value is an object with top and left properties - * @return {Object} object with "top" and "left" number values + * Default CSS class name for canvas + * @static + * @type String + * @default */ - getCenter: function () { - return { - top: this.height / 2, - left: this.width / 2 - }; - }, - + fabric.Image.CSS_CANVAS = 'canvas-img'; /** - * Centers object horizontally in the canvas - * @param {fabric.Object} object Object to center horizontally - * @return {fabric.Canvas} thisArg + * Alias for getSrc + * @static */ - centerObjectH: function (object) { - return this._centerObject(object, new fabric.Point(this.getCenter().left, object.getCenterPoint().y)); - }, - + fabric.Image.prototype.getSvgSrc = fabric.Image.prototype.getSrc; /** - * Centers object vertically in the canvas - * @param {fabric.Object} object Object to center vertically - * @return {fabric.Canvas} thisArg - * @chainable - */ - centerObjectV: function (object) { - return this._centerObject(object, new fabric.Point(object.getCenterPoint().x, this.getCenter().top)); - }, - + * Creates an instance of fabric.Image from its object representation + * @static + * @param {Object} object Object to create an instance from + * @param {object} [options] Options object + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @returns {Promise} + */ + fabric.Image.fromObject = function (object, options) { + var _object = Object.assign({}, object), filters = _object.filters, resizeFilter = _object.resizeFilter; + // the generic enliving will fail on filters for now + delete _object.resizeFilter; + delete _object.filters; + var imageOptions = Object.assign({}, options, { + crossOrigin: _object.crossOrigin, + }), filterOptions = Object.assign({}, options, { + namespace: fabric.Image.filters, + }); + return Promise.all([ + fabric.util.loadImage(_object.src, imageOptions), + filters && fabric.util.enlivenObjects(filters, filterOptions), + resizeFilter && fabric.util.enlivenObjects([resizeFilter], filterOptions), + fabric.util.enlivenObjectEnlivables(_object, options), + ]).then(function (imgAndFilters) { + _object.filters = imgAndFilters[1] || []; + _object.resizeFilter = imgAndFilters[2] && imgAndFilters[2][0]; + return new fabric.Image(imgAndFilters[0], Object.assign(_object, imgAndFilters[3])); + }); + }; /** - * Centers object vertically and horizontally in the canvas - * @param {fabric.Object} object Object to center vertically and horizontally - * @return {fabric.Canvas} thisArg - * @chainable - */ - centerObject: function(object) { - var center = this.getCenter(); - - return this._centerObject(object, new fabric.Point(center.left, center.top)); - }, - + * Creates an instance of fabric.Image from an URL string + * @static + * @param {String} url URL to create an image from + * @param {object} [options] Options object + * @param {string} [options.crossOrigin] cors value for the image loading, default to anonymous + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @returns {Promise} + */ + fabric.Image.fromURL = function (url, options) { + return fabric.util.loadImage(url, options || {}).then(function (img) { + return new fabric.Image(img, options); + }); + }; + /* _FROM_SVG_START_ */ /** - * Centers object vertically and horizontally in the viewport - * @param {fabric.Object} object Object to center vertically and horizontally - * @return {fabric.Canvas} thisArg - * @chainable + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Image.fromElement}) + * @static + * @see {@link http://www.w3.org/TR/SVG/struct.html#ImageElement} */ - viewportCenterObject: function(object) { - var vpCenter = this.getVpCenter(); - - return this._centerObject(object, vpCenter); - }, - + fabric.Image.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x y width height preserveAspectRatio xlink:href crossOrigin image-rendering'.split(' ')); /** - * Centers object horizontally in the viewport, object.top is unchanged - * @param {fabric.Object} object Object to center vertically and horizontally - * @return {fabric.Canvas} thisArg - * @chainable - */ - viewportCenterObjectH: function(object) { - var vpCenter = this.getVpCenter(); - this._centerObject(object, new fabric.Point(vpCenter.x, object.getCenterPoint().y)); - return this; - }, - - /** - * Centers object Vertically in the viewport, object.top is unchanged - * @param {fabric.Object} object Object to center vertically and horizontally - * @return {fabric.Canvas} thisArg - * @chainable - */ - viewportCenterObjectV: function(object) { - var vpCenter = this.getVpCenter(); - - return this._centerObject(object, new fabric.Point(object.getCenterPoint().x, vpCenter.y)); - }, - - /** - * Calculate the point in canvas that correspond to the center of actual viewport. - * @return {fabric.Point} vpCenter, viewport center - * @chainable - */ - getVpCenter: function() { - var center = this.getCenter(), - iVpt = invertTransform(this.viewportTransform); - return transformPoint({ x: center.left, y: center.top }, iVpt); - }, - - /** - * @private - * @param {fabric.Object} object Object to center - * @param {fabric.Point} center Center point - * @return {fabric.Canvas} thisArg - * @chainable - */ - _centerObject: function(object, center) { - object.setPositionByOrigin(center, 'center', 'center'); - object.setCoords(); - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - - /** - * Returns dataless JSON representation of canvas - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {String} json string - */ - toDatalessJSON: function (propertiesToInclude) { - return this.toDatalessObject(propertiesToInclude); - }, - - /** - * Returns object representation of canvas - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function (propertiesToInclude) { - return this._toObjectMethod('toObject', propertiesToInclude); - }, - - /** - * Returns dataless object representation of canvas - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toDatalessObject: function (propertiesToInclude) { - return this._toObjectMethod('toDatalessObject', propertiesToInclude); - }, - - /** - * @private - */ - _toObjectMethod: function (methodName, propertiesToInclude) { - - var clipPath = this.clipPath, data = { - version: fabric.version, - objects: this._toObjects(methodName, propertiesToInclude), - }; - if (clipPath && !clipPath.excludeFromExport) { - data.clipPath = this._toObject(this.clipPath, methodName, propertiesToInclude); - } - extend(data, this.__serializeBgOverlay(methodName, propertiesToInclude)); - - fabric.util.populateWithProperties(this, data, propertiesToInclude); - - return data; - }, - - /** - * @private - */ - _toObjects: function(methodName, propertiesToInclude) { - return this._objects.filter(function(object) { - return !object.excludeFromExport; - }).map(function(instance) { - return this._toObject(instance, methodName, propertiesToInclude); - }, this); - }, + * Returns {@link fabric.Image} instance from an SVG element + * @static + * @param {SVGElement} element Element to parse + * @param {Object} [options] Options object + * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @param {Function} callback Callback to execute when fabric.Image object is created + * @return {fabric.Image} Instance of fabric.Image + */ + fabric.Image.fromElement = function (element, callback, options) { + var parsedAttributes = fabric.parseAttributes(element, fabric.Image.ATTRIBUTE_NAMES); + fabric.Image.fromURL(parsedAttributes['xlink:href'], Object.assign({}, options || {}, parsedAttributes)).then(function (fabricImage) { + callback(fabricImage); + }); + }; + /* _FROM_SVG_END_ */ +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.Object.prototype, + /** @lends fabric.Object.prototype */ { + /** + * @private + * @return {Number} angle value + */ + _getAngleValueForStraighten: function () { + var angle = this.angle % 360; + if (angle > 0) { + return Math.round((angle - 1) / 90) * 90; + } + return Math.round(angle / 90) * 90; + }, + /** + * Straightens an object (rotating it from current angle to one of 0, 90, 180, 270, etc. depending on which is closer) + * @return {fabric.Object} thisArg + * @chainable + */ + straighten: function () { + return this.rotate(this._getAngleValueForStraighten()); + }, + /** + * Same as {@link fabric.Object.prototype.straighten} but with animation + * @param {Object} callbacks Object with callback functions + * @param {Function} [callbacks.onComplete] Invoked on completion + * @param {Function} [callbacks.onChange] Invoked on every step of animation + * @return {fabric.Object} thisArg + */ + fxStraighten: function (callbacks) { + callbacks = callbacks || {}; + var empty = function () { }, onComplete = callbacks.onComplete || empty, onChange = callbacks.onChange || empty, _this = this; + return fabric.util.animate({ + target: this, + startValue: this.get('angle'), + endValue: this._getAngleValueForStraighten(), + duration: this.FX_DURATION, + onChange: function (value) { + _this.rotate(value); + onChange(); + }, + onComplete: function () { + _this.setCoords(); + onComplete(); + }, + }); + }, + }); + fabric.util.object.extend(fabric.StaticCanvas.prototype, + /** @lends fabric.StaticCanvas.prototype */ { + /** + * Straightens object, then rerenders canvas + * @param {fabric.Object} object Object to straighten + * @return {fabric.Canvas} thisArg + * @chainable + */ + straightenObject: function (object) { + object.straighten(); + this.requestRenderAll(); + return this; + }, + /** + * Same as {@link fabric.Canvas.prototype.straightenObject}, but animated + * @param {fabric.Object} object Object to straighten + * @return {fabric.Canvas} thisArg + */ + fxStraightenObject: function (object) { + return object.fxStraighten({ + onChange: this.requestRenderAllBound, + }); + }, + }); +})(typeof exports !== 'undefined' ? exports : window); +//@ts-nocheck +/** + * @todo remove once rollup supports transforming enums... + * https://github.com/rollup/plugins/issues/463 + */ +const WebGLPrecision = [ + "lowp" /* TWebGLPrecision.low */, + "mediump" /* TWebGLPrecision.medium */, + "highp" /* TWebGLPrecision.high */, +]; +/** + * Lazy initialize WebGL contants + */ +class WebGLProbe { + constructor() { + this.initialized = false; + } + get maxTextureSize() { + this.queryWebGL(); + return this._maxTextureSize; + } + get webGLPrecision() { + this.queryWebGL(); + return this._webGLPrecision; + } /** - * @private + * Tests if webgl supports certain precision + * @param {WebGL} Canvas WebGL context to test on + * @param {TWebGLPrecision} Precision to test can be any of following + * @returns {Boolean} Whether the user's browser WebGL supports given precision. */ - _toObject: function(instance, methodName, propertiesToInclude) { - var originalValue; - - if (!this.includeDefaultValues) { - originalValue = instance.includeDefaultValues; - instance.includeDefaultValues = false; - } - - var object = instance[methodName](propertiesToInclude); - if (!this.includeDefaultValues) { - instance.includeDefaultValues = originalValue; - } - return object; - }, - + testPrecision(gl, precision) { + const fragmentSource = `precision ${precision} float;\nvoid main(){}`; + const fragmentShader = gl.createShader(gl.FRAGMENT_SHADER); + gl.shaderSource(fragmentShader, fragmentSource); + gl.compileShader(fragmentShader); + return !!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS); + } /** - * @private + * query browser for WebGL + * @returns config object if true */ - __serializeBgOverlay: function(methodName, propertiesToInclude) { - var data = {}, bgImage = this.backgroundImage, overlayImage = this.overlayImage, - bgColor = this.backgroundColor, overlayColor = this.overlayColor; - - if (bgColor && bgColor.toObject) { - if (!bgColor.excludeFromExport) { - data.background = bgColor.toObject(propertiesToInclude); + queryWebGL() { + if (this.initialized || fabric$1.isLikelyNode) { + return; } - } - else if (bgColor) { - data.background = bgColor; - } - - if (overlayColor && overlayColor.toObject) { - if (!overlayColor.excludeFromExport) { - data.overlay = overlayColor.toObject(propertiesToInclude); + const canvas = createCanvasElement(); + const gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl'); + if (gl) { + this._maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE); + this._webGLPrecision = WebGLPrecision.find((key) => this.testPrecision(gl, key)); + console.log(`fabric: max texture size ${this._maxTextureSize}`); } - } - else if (overlayColor) { - data.overlay = overlayColor; - } - - if (bgImage && !bgImage.excludeFromExport) { - data.backgroundImage = this._toObject(bgImage, methodName, propertiesToInclude); - } - if (overlayImage && !overlayImage.excludeFromExport) { - data.overlayImage = this._toObject(overlayImage, methodName, propertiesToInclude); - } + this.initialized = true; + } + isSupported(textureSize) { + return this.maxTextureSize && this.maxTextureSize >= textureSize; + } +} +const webGLProbe = new WebGLProbe(); - return data; - }, +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.initFilterBackend = function () { + if (config.enableGLFiltering && + webGLProbe.isSupported(config.textureSize)) { + return new fabric.WebglFilterBackend({ tileSize: config.textureSize }); + } + else if (fabric.Canvas2dFilterBackend) { + return new fabric.Canvas2dFilterBackend(); + } + }; + fabric.WebglFilterBackend = WebglFilterBackend; + /** + * WebGL filter backend. + */ + function WebglFilterBackend(options) { + if (options && options.tileSize) { + this.tileSize = options.tileSize; + } + this.setupGLContext(this.tileSize, this.tileSize); + this.captureGPUInfo(); + } + WebglFilterBackend.prototype = + /** @lends fabric.WebglFilterBackend.prototype */ { + tileSize: config.textureSize, + /** + * Experimental. This object is a sort of repository of help layers used to avoid + * of recreating them during frequent filtering. If you are previewing a filter with + * a slider you probably do not want to create help layers every filter step. + * in this object there will be appended some canvases, created once, resized sometimes + * cleared never. Clearing is left to the developer. + **/ + resources: {}, + /** + * Setup a WebGL context suitable for filtering, and bind any needed event handlers. + */ + setupGLContext: function (width, height) { + this.dispose(); + this.createWebGLCanvas(width, height); + // eslint-disable-next-line + this.aPosition = new Float32Array([0, 0, 0, 1, 1, 0, 1, 1]); + this.chooseFastestCopyGLTo2DMethod(width, height); + }, + /** + * Pick a method to copy data from GL context to 2d canvas. In some browsers using + * putImageData is faster than drawImage for that specific operation. + */ + chooseFastestCopyGLTo2DMethod: function (width, height) { + var canMeasurePerf = typeof window.performance !== 'undefined', canUseImageData; + try { + new ImageData(1, 1); + canUseImageData = true; + } + catch (e) { + canUseImageData = false; + } + // eslint-disable-next-line no-undef + var canUseArrayBuffer = typeof ArrayBuffer !== 'undefined'; + // eslint-disable-next-line no-undef + var canUseUint8Clamped = typeof Uint8ClampedArray !== 'undefined'; + if (!(canMeasurePerf && + canUseImageData && + canUseArrayBuffer && + canUseUint8Clamped)) { + return; + } + var targetCanvas = fabric.util.createCanvasElement(); + // eslint-disable-next-line no-undef + var imageBuffer = new ArrayBuffer(width * height * 4); + if (config.forceGLPutImageData) { + this.imageBuffer = imageBuffer; + this.copyGLTo2D = copyGLTo2DPutImageData; + return; + } + var testContext = { + imageBuffer: imageBuffer, + destinationWidth: width, + destinationHeight: height, + targetCanvas: targetCanvas, + }; + var startTime, drawImageTime, putImageDataTime; + targetCanvas.width = width; + targetCanvas.height = height; + startTime = window.performance.now(); + copyGLTo2DDrawImage.call(testContext, this.gl, testContext); + drawImageTime = window.performance.now() - startTime; + startTime = window.performance.now(); + copyGLTo2DPutImageData.call(testContext, this.gl, testContext); + putImageDataTime = window.performance.now() - startTime; + if (drawImageTime > putImageDataTime) { + this.imageBuffer = imageBuffer; + this.copyGLTo2D = copyGLTo2DPutImageData; + } + else { + this.copyGLTo2D = copyGLTo2DDrawImage; + } + }, + /** + * Create a canvas element and associated WebGL context and attaches them as + * class properties to the GLFilterBackend class. + */ + createWebGLCanvas: function (width, height) { + var canvas = fabric.util.createCanvasElement(); + canvas.width = width; + canvas.height = height; + var glOptions = { + alpha: true, + premultipliedAlpha: false, + depth: false, + stencil: false, + antialias: false, + }, gl = canvas.getContext('webgl', glOptions); + if (!gl) { + gl = canvas.getContext('experimental-webgl', glOptions); + } + if (!gl) { + return; + } + gl.clearColor(0, 0, 0, 0); + // this canvas can fire webglcontextlost and webglcontextrestored + this.canvas = canvas; + this.gl = gl; + }, + /** + * Attempts to apply the requested filters to the source provided, drawing the filtered output + * to the provided target canvas. + * + * @param {Array} filters The filters to apply. + * @param {HTMLImageElement|HTMLCanvasElement} source The source to be filtered. + * @param {Number} width The width of the source input. + * @param {Number} height The height of the source input. + * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn. + * @param {String|undefined} cacheKey A key used to cache resources related to the source. If + * omitted, caching will be skipped. + */ + applyFilters: function (filters, source, width, height, targetCanvas, cacheKey) { + var gl = this.gl; + var cachedTexture; + if (cacheKey) { + cachedTexture = this.getCachedTexture(cacheKey, source); + } + var pipelineState = { + originalWidth: source.width || source.originalWidth, + originalHeight: source.height || source.originalHeight, + sourceWidth: width, + sourceHeight: height, + destinationWidth: width, + destinationHeight: height, + context: gl, + sourceTexture: this.createTexture(gl, width, height, !cachedTexture && source), + targetTexture: this.createTexture(gl, width, height), + originalTexture: cachedTexture || + this.createTexture(gl, width, height, !cachedTexture && source), + passes: filters.length, + webgl: true, + aPosition: this.aPosition, + programCache: this.programCache, + pass: 0, + filterBackend: this, + targetCanvas: targetCanvas, + }; + var tempFbo = gl.createFramebuffer(); + gl.bindFramebuffer(gl.FRAMEBUFFER, tempFbo); + filters.forEach(function (filter) { + filter && filter.applyTo(pipelineState); + }); + resizeCanvasIfNeeded(pipelineState); + this.copyGLTo2D(gl, pipelineState); + gl.bindTexture(gl.TEXTURE_2D, null); + gl.deleteTexture(pipelineState.sourceTexture); + gl.deleteTexture(pipelineState.targetTexture); + gl.deleteFramebuffer(tempFbo); + targetCanvas.getContext('2d').setTransform(1, 0, 0, 1, 0, 0); + return pipelineState; + }, + /** + * Detach event listeners, remove references, and clean up caches. + */ + dispose: function () { + if (this.canvas) { + this.canvas = null; + this.gl = null; + } + this.clearWebGLCaches(); + }, + /** + * Wipe out WebGL-related caches. + */ + clearWebGLCaches: function () { + this.programCache = {}; + this.textureCache = {}; + }, + /** + * Create a WebGL texture object. + * + * Accepts specific dimensions to initialize the texture to or a source image. + * + * @param {WebGLRenderingContext} gl The GL context to use for creating the texture. + * @param {Number} width The width to initialize the texture at. + * @param {Number} height The height to initialize the texture. + * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source for the texture data. + * @returns {WebGLTexture} + */ + createTexture: function (gl, width, height, textureImageSource) { + var texture = gl.createTexture(); + gl.bindTexture(gl.TEXTURE_2D, texture); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); + if (textureImageSource) { + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, textureImageSource); + } + else { + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); + } + return texture; + }, + /** + * Can be optionally used to get a texture from the cache array + * + * If an existing texture is not found, a new texture is created and cached. + * + * @param {String} uniqueId A cache key to use to find an existing texture. + * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source to use to create the + * texture cache entry if one does not already exist. + */ + getCachedTexture: function (uniqueId, textureImageSource) { + if (this.textureCache[uniqueId]) { + return this.textureCache[uniqueId]; + } + else { + var texture = this.createTexture(this.gl, textureImageSource.width, textureImageSource.height, textureImageSource); + this.textureCache[uniqueId] = texture; + return texture; + } + }, + /** + * Clear out cached resources related to a source image that has been + * filtered previously. + * + * @param {String} cacheKey The cache key provided when the source image was filtered. + */ + evictCachesForKey: function (cacheKey) { + if (this.textureCache[cacheKey]) { + this.gl.deleteTexture(this.textureCache[cacheKey]); + delete this.textureCache[cacheKey]; + } + }, + copyGLTo2D: copyGLTo2DDrawImage, + /** + * Attempt to extract GPU information strings from a WebGL context. + * + * Useful information when debugging or blacklisting specific GPUs. + * + * @returns {Object} A GPU info object with renderer and vendor strings. + */ + captureGPUInfo: function () { + if (this.gpuInfo) { + return this.gpuInfo; + } + var gl = this.gl, gpuInfo = { renderer: '', vendor: '' }; + if (!gl) { + return gpuInfo; + } + var ext = gl.getExtension('WEBGL_debug_renderer_info'); + if (ext) { + var renderer = gl.getParameter(ext.UNMASKED_RENDERER_WEBGL); + var vendor = gl.getParameter(ext.UNMASKED_VENDOR_WEBGL); + if (renderer) { + gpuInfo.renderer = renderer.toLowerCase(); + } + if (vendor) { + gpuInfo.vendor = vendor.toLowerCase(); + } + } + this.gpuInfo = gpuInfo; + return gpuInfo; + }, + }; +})(typeof exports !== 'undefined' ? exports : window); +function resizeCanvasIfNeeded(pipelineState) { + var targetCanvas = pipelineState.targetCanvas, width = targetCanvas.width, height = targetCanvas.height, dWidth = pipelineState.destinationWidth, dHeight = pipelineState.destinationHeight; + if (width !== dWidth || height !== dHeight) { + targetCanvas.width = dWidth; + targetCanvas.height = dHeight; + } +} +/** + * Copy an input WebGL canvas on to an output 2D canvas. + * + * The WebGL canvas is assumed to be upside down, with the top-left pixel of the + * desired output image appearing in the bottom-left corner of the WebGL canvas. + * + * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from. + * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to. + * @param {Object} pipelineState The 2D target canvas to copy on to. + */ +function copyGLTo2DDrawImage(gl, pipelineState) { + var glCanvas = gl.canvas, targetCanvas = pipelineState.targetCanvas, ctx = targetCanvas.getContext('2d'); + ctx.translate(0, targetCanvas.height); // move it down again + ctx.scale(1, -1); // vertical flip + // where is my image on the big glcanvas? + var sourceY = glCanvas.height - targetCanvas.height; + ctx.drawImage(glCanvas, 0, sourceY, targetCanvas.width, targetCanvas.height, 0, 0, targetCanvas.width, targetCanvas.height); +} +/** + * Copy an input WebGL canvas on to an output 2D canvas using 2d canvas' putImageData + * API. Measurably faster than using ctx.drawImage in Firefox (version 54 on OSX Sierra). + * + * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from. + * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to. + * @param {Object} pipelineState The 2D target canvas to copy on to. + */ +function copyGLTo2DPutImageData(gl, pipelineState) { + var targetCanvas = pipelineState.targetCanvas, ctx = targetCanvas.getContext('2d'), dWidth = pipelineState.destinationWidth, dHeight = pipelineState.destinationHeight, numBytes = dWidth * dHeight * 4; + // eslint-disable-next-line no-undef + var u8 = new Uint8Array(this.imageBuffer, 0, numBytes); + // eslint-disable-next-line no-undef + var u8Clamped = new Uint8ClampedArray(this.imageBuffer, 0, numBytes); + gl.readPixels(0, 0, dWidth, dHeight, gl.RGBA, gl.UNSIGNED_BYTE, u8); + var imgData = new ImageData(u8Clamped, dWidth, dHeight); + ctx.putImageData(imgData, 0, 0); +} - /* _TO_SVG_START_ */ +//@ts-nocheck +(function (global) { + var fabric = global.fabric, noop = function () { }; + fabric.Canvas2dFilterBackend = Canvas2dFilterBackend; + /** + * Canvas 2D filter backend. + */ + function Canvas2dFilterBackend() { } + Canvas2dFilterBackend.prototype = + /** @lends fabric.Canvas2dFilterBackend.prototype */ { + evictCachesForKey: noop, + dispose: noop, + clearWebGLCaches: noop, + /** + * Experimental. This object is a sort of repository of help layers used to avoid + * of recreating them during frequent filtering. If you are previewing a filter with + * a slider you probably do not want to create help layers every filter step. + * in this object there will be appended some canvases, created once, resized sometimes + * cleared never. Clearing is left to the developer. + **/ + resources: {}, + /** + * Apply a set of filters against a source image and draw the filtered output + * to the provided destination canvas. + * + * @param {EnhancedFilter} filters The filter to apply. + * @param {HTMLImageElement|HTMLCanvasElement} sourceElement The source to be filtered. + * @param {Number} sourceWidth The width of the source input. + * @param {Number} sourceHeight The height of the source input. + * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn. + */ + applyFilters: function (filters, sourceElement, sourceWidth, sourceHeight, targetCanvas) { + var ctx = targetCanvas.getContext('2d'); + ctx.drawImage(sourceElement, 0, 0, sourceWidth, sourceHeight); + var imageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight); + var originalImageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight); + var pipelineState = { + sourceWidth: sourceWidth, + sourceHeight: sourceHeight, + imageData: imageData, + originalEl: sourceElement, + originalImageData: originalImageData, + canvasEl: targetCanvas, + ctx: ctx, + filterBackend: this, + }; + filters.forEach(function (filter) { + filter.applyTo(pipelineState); + }); + if (pipelineState.imageData.width !== sourceWidth || + pipelineState.imageData.height !== sourceHeight) { + targetCanvas.width = pipelineState.imageData.width; + targetCanvas.height = pipelineState.imageData.height; + } + ctx.putImageData(pipelineState.imageData, 0, 0); + return pipelineState; + }, + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + /** + * @namespace fabric.Image.filters + * @memberOf fabric.Image + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#image_filters} + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + */ + fabric.Image.filters = fabric.Image.filters || {}; + /** + * Root filter class from which all filter classes inherit from + * @class fabric.Image.filters.BaseFilter + * @memberOf fabric.Image.filters + */ + fabric.Image.filters.BaseFilter = fabric.util.createClass( + /** @lends fabric.Image.filters.BaseFilter.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'BaseFilter', + /** + * Array of attributes to send with buffers. do not modify + * @private + */ + vertexSource: 'attribute vec2 aPosition;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vTexCoord = aPosition;\n' + + 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\n' + + '}', + fragmentSource: 'precision highp float;\n' + + 'varying vec2 vTexCoord;\n' + + 'uniform sampler2D uTexture;\n' + + 'void main() {\n' + + 'gl_FragColor = texture2D(uTexture, vTexCoord);\n' + + '}', + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function (options) { + if (options) { + this.setOptions(options); + } + }, + /** + * Sets filter's properties from options + * @param {Object} [options] Options object + */ + setOptions: function (options) { + for (var prop in options) { + this[prop] = options[prop]; + } + }, + /** + * Compile this filter's shader program. + * + * @param {WebGLRenderingContext} gl The GL canvas context to use for shader compilation. + * @param {String} fragmentSource fragmentShader source for compilation + * @param {String} vertexSource vertexShader source for compilation + */ + createProgram: function (gl, fragmentSource, vertexSource) { + fragmentSource = fragmentSource || this.fragmentSource; + vertexSource = vertexSource || this.vertexSource; + if (webGLProbe.webGLPrecision !== "highp" /* TWebGLPrecision.high */) { + fragmentSource = fragmentSource.replace(new RegExp(`precision ${"highp" /* TWebGLPrecision.high */} float`, 'g'), `precision ${webGLProbe.webGLPrecision} float`); + } + var vertexShader = gl.createShader(gl.VERTEX_SHADER); + gl.shaderSource(vertexShader, vertexSource); + gl.compileShader(vertexShader); + if (!gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS)) { + throw new Error( + // eslint-disable-next-line prefer-template + 'Vertex shader compile error for ' + + this.type + + ': ' + + gl.getShaderInfoLog(vertexShader)); + } + var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER); + gl.shaderSource(fragmentShader, fragmentSource); + gl.compileShader(fragmentShader); + if (!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS)) { + throw new Error( + // eslint-disable-next-line prefer-template + 'Fragment shader compile error for ' + + this.type + + ': ' + + gl.getShaderInfoLog(fragmentShader)); + } + var program = gl.createProgram(); + gl.attachShader(program, vertexShader); + gl.attachShader(program, fragmentShader); + gl.linkProgram(program); + if (!gl.getProgramParameter(program, gl.LINK_STATUS)) { + throw new Error( + // eslint-disable-next-line prefer-template + 'Shader link error for "${this.type}" ' + + gl.getProgramInfoLog(program)); + } + var attributeLocations = this.getAttributeLocations(gl, program); + var uniformLocations = this.getUniformLocations(gl, program) || {}; + uniformLocations.uStepW = gl.getUniformLocation(program, 'uStepW'); + uniformLocations.uStepH = gl.getUniformLocation(program, 'uStepH'); + return { + program: program, + attributeLocations: attributeLocations, + uniformLocations: uniformLocations, + }; + }, + /** + * Return a map of attribute names to WebGLAttributeLocation objects. + * + * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. + * @param {WebGLShaderProgram} program The shader program from which to take attribute locations. + * @returns {Object} A map of attribute names to attribute locations. + */ + getAttributeLocations: function (gl, program) { + return { + aPosition: gl.getAttribLocation(program, 'aPosition'), + }; + }, + /** + * Return a map of uniform names to WebGLUniformLocation objects. + * + * Intended to be overridden by subclasses. + * + * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. + * @param {WebGLShaderProgram} program The shader program from which to take uniform locations. + * @returns {Object} A map of uniform names to uniform locations. + */ + getUniformLocations: function ( /* gl, program */) { + // in case i do not need any special uniform i need to return an empty object + return {}; + }, + /** + * Send attribute data from this filter to its shader program on the GPU. + * + * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. + * @param {Object} attributeLocations A map of shader attribute names to their locations. + */ + sendAttributeData: function (gl, attributeLocations, aPositionData) { + var attributeLocation = attributeLocations.aPosition; + var buffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, buffer); + gl.enableVertexAttribArray(attributeLocation); + gl.vertexAttribPointer(attributeLocation, 2, gl.FLOAT, false, 0, 0); + gl.bufferData(gl.ARRAY_BUFFER, aPositionData, gl.STATIC_DRAW); + }, + _setupFrameBuffer: function (options) { + var gl = options.context, width, height; + if (options.passes > 1) { + width = options.destinationWidth; + height = options.destinationHeight; + if (options.sourceWidth !== width || + options.sourceHeight !== height) { + gl.deleteTexture(options.targetTexture); + options.targetTexture = options.filterBackend.createTexture(gl, width, height); + } + gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, options.targetTexture, 0); + } + else { + // draw last filter on canvas and not to framebuffer. + gl.bindFramebuffer(gl.FRAMEBUFFER, null); + gl.finish(); + } + }, + _swapTextures: function (options) { + options.passes--; + options.pass++; + var temp = options.targetTexture; + options.targetTexture = options.sourceTexture; + options.sourceTexture = temp; + }, + /** + * Generic isNeutral implementation for one parameter based filters. + * Used only in image applyFilters to discard filters that will not have an effect + * on the image + * Other filters may need their own version ( ColorMatrix, HueRotation, gamma, ComposedFilter ) + * @param {Object} options + **/ + isNeutralState: function ( /* options */) { + var main = this.mainParameter, _class = fabric.Image.filters[this.type].prototype; + if (main) { + if (Array.isArray(_class[main])) { + for (var i = _class[main].length; i--;) { + if (this[main][i] !== _class[main][i]) { + return false; + } + } + return true; + } + else { + return _class[main] === this[main]; + } + } + else { + return false; + } + }, + /** + * Apply this filter to the input image data provided. + * + * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be executed + * @param {Boolean} options.webgl Whether to use webgl to render the filter. + * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. + * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + applyTo: function (options) { + if (options.webgl) { + this._setupFrameBuffer(options); + this.applyToWebGL(options); + this._swapTextures(options); + } + else { + this.applyTo2d(options); + } + }, + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function (options) { + if (!options.programCache.hasOwnProperty(this.type)) { + options.programCache[this.type] = this.createProgram(options.context); + } + return options.programCache[this.type]; + }, + /** + * Apply this filter using webgl. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be executed + * @param {Boolean} options.webgl Whether to use webgl to render the filter. + * @param {WebGLTexture} options.originalTexture The texture of the original input image. + * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. + * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + applyToWebGL: function (options) { + var gl = options.context; + var shader = this.retrieveShader(options); + if (options.pass === 0 && options.originalTexture) { + gl.bindTexture(gl.TEXTURE_2D, options.originalTexture); + } + else { + gl.bindTexture(gl.TEXTURE_2D, options.sourceTexture); + } + gl.useProgram(shader.program); + this.sendAttributeData(gl, shader.attributeLocations, options.aPosition); + gl.uniform1f(shader.uniformLocations.uStepW, 1 / options.sourceWidth); + gl.uniform1f(shader.uniformLocations.uStepH, 1 / options.sourceHeight); + this.sendUniformData(gl, shader.uniformLocations); + gl.viewport(0, 0, options.destinationWidth, options.destinationHeight); + gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4); + }, + bindAdditionalTexture: function (gl, texture, textureUnit) { + gl.activeTexture(textureUnit); + gl.bindTexture(gl.TEXTURE_2D, texture); + // reset active texture to 0 as usual + gl.activeTexture(gl.TEXTURE0); + }, + unbindAdditionalTexture: function (gl, textureUnit) { + gl.activeTexture(textureUnit); + gl.bindTexture(gl.TEXTURE_2D, null); + gl.activeTexture(gl.TEXTURE0); + }, + getMainParameter: function () { + return this[this.mainParameter]; + }, + setMainParameter: function (value) { + this[this.mainParameter] = value; + }, + /** + * Send uniform data from this filter to its shader program on the GPU. + * + * Intended to be overridden by subclasses. + * + * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. + * @param {Object} uniformLocations A map of shader uniform names to their locations. + */ + sendUniformData: function ( /* gl, uniformLocations */) { + // Intentionally left blank. Override me in subclasses. + }, + /** + * If needed by a 2d filter, this functions can create an helper canvas to be used + * remember that options.targetCanvas is available for use till end of chain. + */ + createHelpLayer: function (options) { + if (!options.helpLayer) { + var helpLayer = document.createElement('canvas'); + helpLayer.width = options.sourceWidth; + helpLayer.height = options.sourceHeight; + options.helpLayer = helpLayer; + } + }, + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function () { + var object = { type: this.type }, mainP = this.mainParameter; + if (mainP) { + object[mainP] = this[mainP]; + } + return object; + }, + /** + * Returns a JSON representation of an instance + * @return {Object} JSON + */ + toJSON: function () { + // delegate, not alias + return this.toObject(); + }, + }); /** - * When true, getSvgTransform() will apply the StaticCanvas.viewportTransform to the SVG transformation. When true, - * a zoomed canvas will then produce zoomed SVG output. - * @type Boolean - * @default + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} */ - svgViewportTransformation: true, - - /** - * Returns SVG representation of canvas - * @function - * @param {Object} [options] Options object for SVG output - * @param {Boolean} [options.suppressPreamble=false] If true xml tag is not included - * @param {Object} [options.viewBox] SVG viewbox object - * @param {Number} [options.viewBox.x] x-coordinate of viewbox - * @param {Number} [options.viewBox.y] y-coordinate of viewbox - * @param {Number} [options.viewBox.width] Width of viewbox - * @param {Number} [options.viewBox.height] Height of viewbox - * @param {String} [options.encoding=UTF-8] Encoding of SVG output - * @param {String} [options.width] desired width of svg with or without units - * @param {String} [options.height] desired height of svg with or without units - * @param {Function} [reviver] Method for further parsing of svg elements, called after each fabric object converted into svg representation. - * @return {String} SVG string - * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization} - * @see {@link http://jsfiddle.net/fabricjs/jQ3ZZ/|jsFiddle demo} - * @example Normal SVG output - * var svg = canvas.toSVG(); - * @example SVG output without preamble (without <?xml ../>) - * var svg = canvas.toSVG({suppressPreamble: true}); - * @example SVG output with viewBox attribute - * var svg = canvas.toSVG({ - * viewBox: { - * x: 100, - * y: 100, - * width: 200, - * height: 300 - * } - * }); - * @example SVG output with different encoding (default: UTF-8) - * var svg = canvas.toSVG({encoding: 'ISO-8859-1'}); - * @example Modify SVG output with reviver function - * var svg = canvas.toSVG(null, function(svg) { - * return svg.replace('stroke-dasharray: ; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; ', ''); + fabric.Image.filters.BaseFilter.fromObject = function (object) { + return Promise.resolve(new fabric.Image.filters[object.type](object)); + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Color Matrix filter class + * @class fabric.Image.filters.ColorMatrix + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.ColorMatrix#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @see {@Link http://www.webwasp.co.uk/tutorials/219/Color_Matrix_Filter.php} + * @see {@Link http://phoboslab.org/log/2013/11/fast-image-filters-with-webgl} + * @example Kodachrome filter + * var filter = new fabric.Image.filters.ColorMatrix({ + * matrix: [ + 1.1285582396593525, -0.3967382283601348, -0.03992559172921793, 0, 63.72958762196502, + -0.16404339962244616, 1.0835251566291304, -0.05498805115633132, 0, 24.732407896706203, + -0.16786010706155763, -0.5603416277695248, 1.6014850761964943, 0, 35.62982807460946, + 0, 0, 0, 1, 0 + ] * }); - */ - toSVG: function(options, reviver) { - options || (options = { }); - options.reviver = reviver; - var markup = []; - - this._setSVGPreamble(markup, options); - this._setSVGHeader(markup, options); - if (this.clipPath) { - markup.push('\n'); - } - this._setSVGBgOverlayColor(markup, 'background'); - this._setSVGBgOverlayImage(markup, 'backgroundImage', reviver); - this._setSVGObjects(markup, reviver); - if (this.clipPath) { - markup.push('\n'); - } - this._setSVGBgOverlayColor(markup, 'overlay'); - this._setSVGBgOverlayImage(markup, 'overlayImage', reviver); - - markup.push(''); - - return markup.join(''); - }, - + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.ColorMatrix = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.ColorMatrix.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'ColorMatrix', + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'varying vec2 vTexCoord;\n' + + 'uniform mat4 uColorMatrix;\n' + + 'uniform vec4 uConstants;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'color *= uColorMatrix;\n' + + 'color += uConstants;\n' + + 'gl_FragColor = color;\n' + + '}', + /** + * Colormatrix for pixels. + * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning + * outside the -1, 1 range. + * 0.0039215686 is the part of 1 that get translated to 1 in 2d + * @param {Array} matrix array of 20 numbers. + * @default + */ + matrix: [1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0], + mainParameter: 'matrix', + /** + * Lock the colormatrix on the color part, skipping alpha, mainly for non webgl scenario + * to save some calculation + * @type Boolean + * @default true + */ + colorsOnly: true, + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function (options) { + this.callSuper('initialize', options); + // create a new array instead mutating the prototype with push + this.matrix = this.matrix.slice(0); + }, + /** + * Apply the ColorMatrix operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function (options) { + var imageData = options.imageData, data = imageData.data, iLen = data.length, m = this.matrix, r, g, b, a, i, colorsOnly = this.colorsOnly; + for (i = 0; i < iLen; i += 4) { + r = data[i]; + g = data[i + 1]; + b = data[i + 2]; + if (colorsOnly) { + data[i] = r * m[0] + g * m[1] + b * m[2] + m[4] * 255; + data[i + 1] = r * m[5] + g * m[6] + b * m[7] + m[9] * 255; + data[i + 2] = r * m[10] + g * m[11] + b * m[12] + m[14] * 255; + } + else { + a = data[i + 3]; + data[i] = r * m[0] + g * m[1] + b * m[2] + a * m[3] + m[4] * 255; + data[i + 1] = + r * m[5] + g * m[6] + b * m[7] + a * m[8] + m[9] * 255; + data[i + 2] = + r * m[10] + g * m[11] + b * m[12] + a * m[13] + m[14] * 255; + data[i + 3] = + r * m[15] + g * m[16] + b * m[17] + a * m[18] + m[19] * 255; + } + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uColorMatrix: gl.getUniformLocation(program, 'uColorMatrix'), + uConstants: gl.getUniformLocation(program, 'uConstants'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + var m = this.matrix, matrix = [ + m[0], + m[1], + m[2], + m[3], + m[5], + m[6], + m[7], + m[8], + m[10], + m[11], + m[12], + m[13], + m[15], + m[16], + m[17], + m[18], + ], constants = [m[4], m[9], m[14], m[19]]; + gl.uniformMatrix4fv(uniformLocations.uColorMatrix, false, matrix); + gl.uniform4fv(uniformLocations.uConstants, constants); + }, + }); /** - * @private - */ - _setSVGPreamble: function(markup, options) { - if (options.suppressPreamble) { - return; - } - markup.push( - '\n', - '\n' - ); - }, - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.ColorMatrix.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Brightness filter class + * @class fabric.Image.filters.Brightness + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Brightness#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Brightness({ + * brightness: 0.05 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Brightness = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Brightness.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Brightness', + /** + * Fragment source for the brightness program + */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uBrightness;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'color.rgb += uBrightness;\n' + + 'gl_FragColor = color;\n' + + '}', + /** + * Brightness value, from -1 to 1. + * translated to -255 to 255 for 2d + * 0.0039215686 is the part of 1 that get translated to 1 in 2d + * @param {Number} brightness + * @default + */ + brightness: 0, + /** + * Describe the property that is the filter parameter + * @param {String} m + * @default + */ + mainParameter: 'brightness', + /** + * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function (options) { + if (this.brightness === 0) { + return; + } + var imageData = options.imageData, data = imageData.data, i, len = data.length, brightness = Math.round(this.brightness * 255); + for (i = 0; i < len; i += 4) { + data[i] = data[i] + brightness; + data[i + 1] = data[i + 1] + brightness; + data[i + 2] = data[i + 2] + brightness; + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uBrightness: gl.getUniformLocation(program, 'uBrightness'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform1f(uniformLocations.uBrightness, this.brightness); + }, + }); /** - * @private - */ - _setSVGHeader: function(markup, options) { - var width = options.width || this.width, - height = options.height || this.height, - vpt, viewBox = 'viewBox="0 0 ' + this.width + ' ' + this.height + '" ', - NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; - - if (options.viewBox) { - viewBox = 'viewBox="' + - options.viewBox.x + ' ' + - options.viewBox.y + ' ' + - options.viewBox.width + ' ' + - options.viewBox.height + '" '; - } - else { - if (this.svgViewportTransformation) { - vpt = this.viewportTransform; - viewBox = 'viewBox="' + - toFixed(-vpt[4] / vpt[0], NUM_FRACTION_DIGITS) + ' ' + - toFixed(-vpt[5] / vpt[3], NUM_FRACTION_DIGITS) + ' ' + - toFixed(this.width / vpt[0], NUM_FRACTION_DIGITS) + ' ' + - toFixed(this.height / vpt[3], NUM_FRACTION_DIGITS) + '" '; - } - } - - markup.push( - '\n', - 'Created with Fabric.js ', fabric.version, '\n', - '\n', - this.createSVGFontFacesMarkup(), - this.createSVGRefElementsMarkup(), - this.createSVGClipPathMarkup(options), - '\n' - ); - }, - - createSVGClipPathMarkup: function(options) { - var clipPath = this.clipPath; - if (clipPath) { - clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++; - return '\n' + - this.clipPath.toClipPathSVG(options.reviver) + - '\n'; - } - return ''; - }, - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Brightness.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Adapted from html5rocks article + * @class fabric.Image.filters.Convolute + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Convolute#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example Sharpen filter + * var filter = new fabric.Image.filters.Convolute({ + * matrix: [ 0, -1, 0, + * -1, 5, -1, + * 0, -1, 0 ] + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + * @example Blur filter + * var filter = new fabric.Image.filters.Convolute({ + * matrix: [ 1/9, 1/9, 1/9, + * 1/9, 1/9, 1/9, + * 1/9, 1/9, 1/9 ] + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + * @example Emboss filter + * var filter = new fabric.Image.filters.Convolute({ + * matrix: [ 1, 1, 1, + * 1, 0.7, -1, + * -1, -1, -1 ] + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + * @example Emboss filter with opaqueness + * var filter = new fabric.Image.filters.Convolute({ + * opaque: true, + * matrix: [ 1, 1, 1, + * 1, 0.7, -1, + * -1, -1, -1 ] + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.Convolute = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Convolute.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Convolute', + /* + * Opaque value (true/false) + */ + opaque: false, + /* + * matrix for the filter, max 9x9 + */ + matrix: [0, 0, 0, 0, 1, 0, 0, 0, 0], + /** + * Fragment source for the brightness program + */ + fragmentSource: { + Convolute_3_1: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[9];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 0);\n' + + 'for (float h = 0.0; h < 3.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 3.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 1), uStepH * (h - 1));\n' + + 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 3.0 + w)];\n' + + '}\n' + + '}\n' + + 'gl_FragColor = color;\n' + + '}', + Convolute_3_0: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[9];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 1);\n' + + 'for (float h = 0.0; h < 3.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 3.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 1.0), uStepH * (h - 1.0));\n' + + 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 3.0 + w)];\n' + + '}\n' + + '}\n' + + 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.a = alpha;\n' + + '}', + Convolute_5_1: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[25];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 0);\n' + + 'for (float h = 0.0; h < 5.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 5.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\n' + + 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 5.0 + w)];\n' + + '}\n' + + '}\n' + + 'gl_FragColor = color;\n' + + '}', + Convolute_5_0: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[25];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 1);\n' + + 'for (float h = 0.0; h < 5.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 5.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\n' + + 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 5.0 + w)];\n' + + '}\n' + + '}\n' + + 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.a = alpha;\n' + + '}', + Convolute_7_1: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[49];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 0);\n' + + 'for (float h = 0.0; h < 7.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 7.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\n' + + 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 7.0 + w)];\n' + + '}\n' + + '}\n' + + 'gl_FragColor = color;\n' + + '}', + Convolute_7_0: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[49];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 1);\n' + + 'for (float h = 0.0; h < 7.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 7.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\n' + + 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 7.0 + w)];\n' + + '}\n' + + '}\n' + + 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.a = alpha;\n' + + '}', + Convolute_9_1: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[81];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 0);\n' + + 'for (float h = 0.0; h < 9.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 9.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\n' + + 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 9.0 + w)];\n' + + '}\n' + + '}\n' + + 'gl_FragColor = color;\n' + + '}', + Convolute_9_0: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[81];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 1);\n' + + 'for (float h = 0.0; h < 9.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 9.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\n' + + 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 9.0 + w)];\n' + + '}\n' + + '}\n' + + 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.a = alpha;\n' + + '}', + }, + /** + * Constructor + * @memberOf fabric.Image.filters.Convolute.prototype + * @param {Object} [options] Options object + * @param {Boolean} [options.opaque=false] Opaque value (true/false) + * @param {Array} [options.matrix] Filter matrix + */ + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function (options) { + var size = Math.sqrt(this.matrix.length); + var cacheKey = this.type + '_' + size + '_' + (this.opaque ? 1 : 0); + var shaderSource = this.fragmentSource[cacheKey]; + if (!options.programCache.hasOwnProperty(cacheKey)) { + options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); + } + return options.programCache[cacheKey]; + }, + /** + * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function (options) { + var imageData = options.imageData, data = imageData.data, weights = this.matrix, side = Math.round(Math.sqrt(weights.length)), halfSide = Math.floor(side / 2), sw = imageData.width, sh = imageData.height, output = options.ctx.createImageData(sw, sh), dst = output.data, + // go through the destination image pixels + alphaFac = this.opaque ? 1 : 0, r, g, b, a, dstOff, scx, scy, srcOff, wt, x, y, cx, cy; + for (y = 0; y < sh; y++) { + for (x = 0; x < sw; x++) { + dstOff = (y * sw + x) * 4; + // calculate the weighed sum of the source image pixels that + // fall under the convolution matrix + r = 0; + g = 0; + b = 0; + a = 0; + for (cy = 0; cy < side; cy++) { + for (cx = 0; cx < side; cx++) { + scy = y + cy - halfSide; + scx = x + cx - halfSide; + // eslint-disable-next-line max-depth + if (scy < 0 || scy >= sh || scx < 0 || scx >= sw) { + continue; + } + srcOff = (scy * sw + scx) * 4; + wt = weights[cy * side + cx]; + r += data[srcOff] * wt; + g += data[srcOff + 1] * wt; + b += data[srcOff + 2] * wt; + // eslint-disable-next-line max-depth + if (!alphaFac) { + a += data[srcOff + 3] * wt; + } + } + } + dst[dstOff] = r; + dst[dstOff + 1] = g; + dst[dstOff + 2] = b; + if (!alphaFac) { + dst[dstOff + 3] = a; + } + else { + dst[dstOff + 3] = data[dstOff + 3]; + } + } + } + options.imageData = output; + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uMatrix: gl.getUniformLocation(program, 'uMatrix'), + uOpaque: gl.getUniformLocation(program, 'uOpaque'), + uHalfSize: gl.getUniformLocation(program, 'uHalfSize'), + uSize: gl.getUniformLocation(program, 'uSize'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform1fv(uniformLocations.uMatrix, this.matrix); + }, + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function () { + return extend(this.callSuper('toObject'), { + opaque: this.opaque, + matrix: this.matrix, + }); + }, + }); /** - * Creates markup containing SVG referenced elements like patterns, gradients etc. - * @return {String} - */ - createSVGRefElementsMarkup: function() { - var _this = this, - markup = ['background', 'overlay'].map(function(prop) { - var fill = _this[prop + 'Color']; - if (fill && fill.toLive) { - var shouldTransform = _this[prop + 'Vpt'], vpt = _this.viewportTransform, - object = { - width: _this.width / (shouldTransform ? vpt[0] : 1), - height: _this.height / (shouldTransform ? vpt[3] : 1) - }; - return fill.toSVG( - object, - { additionalTransform: shouldTransform ? fabric.util.matrixToSVG(vpt) : '' } - ); - } - }); - return markup.join(''); - }, - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Convolute.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Grayscale image filter class + * @class fabric.Image.filters.Grayscale + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Grayscale(); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Grayscale = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Grayscale.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Grayscale', + fragmentSource: { + average: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'float average = (color.r + color.b + color.g) / 3.0;\n' + + 'gl_FragColor = vec4(average, average, average, color.a);\n' + + '}', + lightness: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform int uMode;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 col = texture2D(uTexture, vTexCoord);\n' + + 'float average = (max(max(col.r, col.g),col.b) + min(min(col.r, col.g),col.b)) / 2.0;\n' + + 'gl_FragColor = vec4(average, average, average, col.a);\n' + + '}', + luminosity: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform int uMode;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 col = texture2D(uTexture, vTexCoord);\n' + + 'float average = 0.21 * col.r + 0.72 * col.g + 0.07 * col.b;\n' + + 'gl_FragColor = vec4(average, average, average, col.a);\n' + + '}', + }, + /** + * Grayscale mode, between 'average', 'lightness', 'luminosity' + * @param {String} type + * @default + */ + mode: 'average', + mainParameter: 'mode', + /** + * Apply the Grayscale operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function (options) { + var imageData = options.imageData, data = imageData.data, i, len = data.length, value, mode = this.mode; + for (i = 0; i < len; i += 4) { + if (mode === 'average') { + value = (data[i] + data[i + 1] + data[i + 2]) / 3; + } + else if (mode === 'lightness') { + value = + (Math.min(data[i], data[i + 1], data[i + 2]) + + Math.max(data[i], data[i + 1], data[i + 2])) / + 2; + } + else if (mode === 'luminosity') { + value = 0.21 * data[i] + 0.72 * data[i + 1] + 0.07 * data[i + 2]; + } + data[i] = value; + data[i + 1] = value; + data[i + 2] = value; + } + }, + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function (options) { + var cacheKey = this.type + '_' + this.mode; + if (!options.programCache.hasOwnProperty(cacheKey)) { + var shaderSource = this.fragmentSource[this.mode]; + options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); + } + return options.programCache[cacheKey]; + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uMode: gl.getUniformLocation(program, 'uMode'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + // default average mode. + var mode = 1; + gl.uniform1i(uniformLocations.uMode, mode); + }, + /** + * Grayscale filter isNeutralState implementation + * The filter is never neutral + * on the image + **/ + isNeutralState: function () { + return false; + }, + }); /** - * Creates markup containing SVG font faces, - * font URLs for font faces must be collected by developers - * and are not extracted from the DOM by fabricjs - * @param {Array} objects Array of fabric objects - * @return {String} - */ - createSVGFontFacesMarkup: function() { - var markup = '', fontList = { }, obj, fontFamily, - style, row, rowIndex, _char, charIndex, i, len, - fontPaths = fabric.fontPaths, objects = []; - - this._objects.forEach(function add(object) { - objects.push(object); - if (object._objects) { - object._objects.forEach(add); - } - }); - - for (i = 0, len = objects.length; i < len; i++) { - obj = objects[i]; - fontFamily = obj.fontFamily; - if (obj.type.indexOf('text') === -1 || fontList[fontFamily] || !fontPaths[fontFamily]) { - continue; - } - fontList[fontFamily] = true; - if (!obj.styles) { - continue; - } - style = obj.styles; - for (rowIndex in style) { - row = style[rowIndex]; - for (charIndex in row) { - _char = row[charIndex]; - fontFamily = _char.fontFamily; - if (!fontList[fontFamily] && fontPaths[fontFamily]) { - fontList[fontFamily] = true; - } - } - } - } - - for (var j in fontList) { - markup += [ - '\t\t@font-face {\n', - '\t\t\tfont-family: \'', j, '\';\n', - '\t\t\tsrc: url(\'', fontPaths[j], '\');\n', - '\t\t}\n' - ].join(''); - } - - if (markup) { - markup = [ - '\t\n' - ].join(''); - } - - return markup; - }, - - /** - * @private - */ - _setSVGObjects: function(markup, reviver) { - var instance, i, len, objects = this._objects; - for (i = 0, len = objects.length; i < len; i++) { - instance = objects[i]; - if (instance.excludeFromExport) { - continue; - } - this._setSVGObject(markup, instance, reviver); - } - }, - - /** - * @private - */ - _setSVGObject: function(markup, instance, reviver) { - markup.push(instance.toSVG(reviver)); - }, - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Grayscale.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Invert filter class + * @class fabric.Image.filters.Invert + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Invert(); + * object.filters.push(filter); + * object.applyFilters(canvas.renderAll.bind(canvas)); + */ + filters.Invert = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Invert.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Invert', + /** + * Invert also alpha. + * @param {Boolean} alpha + * @default + **/ + alpha: false, + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform int uInvert;\n' + + 'uniform int uAlpha;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'if (uInvert == 1) {\n' + + 'if (uAlpha == 1) {\n' + + 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,1.0 -color.a);\n' + + '} else {\n' + + 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,color.a);\n' + + '}\n' + + '} else {\n' + + 'gl_FragColor = color;\n' + + '}\n' + + '}', + /** + * Filter invert. if false, does nothing + * @param {Boolean} invert + * @default + */ + invert: true, + mainParameter: 'invert', + /** + * Apply the Invert operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function (options) { + var imageData = options.imageData, data = imageData.data, i, len = data.length; + for (i = 0; i < len; i += 4) { + data[i] = 255 - data[i]; + data[i + 1] = 255 - data[i + 1]; + data[i + 2] = 255 - data[i + 2]; + if (this.alpha) { + data[i + 3] = 255 - data[i + 3]; + } + } + }, + /** + * Invert filter isNeutralState implementation + * Used only in image applyFilters to discard filters that will not have an effect + * on the image + * @param {Object} options + **/ + isNeutralState: function () { + return !this.invert; + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uInvert: gl.getUniformLocation(program, 'uInvert'), + uAlpha: gl.getUniformLocation(program, 'uAlpha'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform1i(uniformLocations.uInvert, this.invert); + gl.uniform1i(uniformLocations.uAlpha, this.alpha); + }, + }); /** - * @private - */ - _setSVGBgOverlayImage: function(markup, property, reviver) { - if (this[property] && !this[property].excludeFromExport && this[property].toSVG) { - markup.push(this[property].toSVG(reviver)); - } - }, - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Invert.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Noise filter class + * @class fabric.Image.filters.Noise + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Noise#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Noise({ + * noise: 700 + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.Noise = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Noise.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Noise', + /** + * Fragment source for the noise program + */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uStepH;\n' + + 'uniform float uNoise;\n' + + 'uniform float uSeed;\n' + + 'varying vec2 vTexCoord;\n' + + 'float rand(vec2 co, float seed, float vScale) {\n' + + 'return fract(sin(dot(co.xy * vScale ,vec2(12.9898 , 78.233))) * 43758.5453 * (seed + 0.01) / 2.0);\n' + + '}\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'color.rgb += (0.5 - rand(vTexCoord, uSeed, 0.1 / uStepH)) * uNoise;\n' + + 'gl_FragColor = color;\n' + + '}', + /** + * Describe the property that is the filter parameter + * @param {String} m + * @default + */ + mainParameter: 'noise', + /** + * Noise value, from + * @param {Number} noise + * @default + */ + noise: 0, + /** + * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function (options) { + if (this.noise === 0) { + return; + } + var imageData = options.imageData, data = imageData.data, i, len = data.length, noise = this.noise, rand; + for (i = 0, len = data.length; i < len; i += 4) { + rand = (0.5 - Math.random()) * noise; + data[i] += rand; + data[i + 1] += rand; + data[i + 2] += rand; + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uNoise: gl.getUniformLocation(program, 'uNoise'), + uSeed: gl.getUniformLocation(program, 'uSeed'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform1f(uniformLocations.uNoise, this.noise / 255); + gl.uniform1f(uniformLocations.uSeed, Math.random()); + }, + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function () { + return extend(this.callSuper('toObject'), { + noise: this.noise, + }); + }, + }); /** - * @private - */ - _setSVGBgOverlayColor: function(markup, property) { - var filler = this[property + 'Color'], vpt = this.viewportTransform, finalWidth = this.width, - finalHeight = this.height; - if (!filler) { - return; - } - if (filler.toLive) { - var repeat = filler.repeat, iVpt = fabric.util.invertTransform(vpt), shouldInvert = this[property + 'Vpt'], - additionalTransform = shouldInvert ? fabric.util.matrixToSVG(iVpt) : ''; - markup.push( - '\n' - ); - } - else { - markup.push( - '\n' - ); - } - }, - /* _TO_SVG_END_ */ - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Noise.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Pixelate filter class + * @class fabric.Image.filters.Pixelate + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Pixelate#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Pixelate({ + * blocksize: 8 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Pixelate = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Pixelate.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Pixelate', + blocksize: 4, + mainParameter: 'blocksize', + /** + * Fragment source for the Pixelate program + */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uBlocksize;\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'float blockW = uBlocksize * uStepW;\n' + + 'float blockH = uBlocksize * uStepW;\n' + + 'int posX = int(vTexCoord.x / blockW);\n' + + 'int posY = int(vTexCoord.y / blockH);\n' + + 'float fposX = float(posX);\n' + + 'float fposY = float(posY);\n' + + 'vec2 squareCoords = vec2(fposX * blockW, fposY * blockH);\n' + + 'vec4 color = texture2D(uTexture, squareCoords);\n' + + 'gl_FragColor = color;\n' + + '}', + /** + * Apply the Pixelate operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function (options) { + var imageData = options.imageData, data = imageData.data, iLen = imageData.height, jLen = imageData.width, index, i, j, r, g, b, a, _i, _j, _iLen, _jLen; + for (i = 0; i < iLen; i += this.blocksize) { + for (j = 0; j < jLen; j += this.blocksize) { + index = i * 4 * jLen + j * 4; + r = data[index]; + g = data[index + 1]; + b = data[index + 2]; + a = data[index + 3]; + _iLen = Math.min(i + this.blocksize, iLen); + _jLen = Math.min(j + this.blocksize, jLen); + for (_i = i; _i < _iLen; _i++) { + for (_j = j; _j < _jLen; _j++) { + index = _i * 4 * jLen + _j * 4; + data[index] = r; + data[index + 1] = g; + data[index + 2] = b; + data[index + 3] = a; + } + } + } + } + }, + /** + * Indicate when the filter is not gonna apply changes to the image + **/ + isNeutralState: function () { + return this.blocksize === 1; + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uBlocksize: gl.getUniformLocation(program, 'uBlocksize'), + uStepW: gl.getUniformLocation(program, 'uStepW'), + uStepH: gl.getUniformLocation(program, 'uStepH'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform1f(uniformLocations.uBlocksize, this.blocksize); + }, + }); /** - * Moves an object or the objects of a multiple selection - * to the bottom of the stack of drawn objects - * @param {fabric.Object} object Object to send to back - * @return {fabric.Canvas} thisArg - * @chainable - */ - sendToBack: function (object) { - if (!object) { - return this; - } - var activeSelection = this._activeObject, - i, obj, objs; - if (object === activeSelection && object.type === 'activeSelection') { - objs = activeSelection._objects; - for (i = objs.length; i--;) { - obj = objs[i]; - removeFromArray(this._objects, obj); - this._objects.unshift(obj); - } - } - else { - removeFromArray(this._objects, object); - this._objects.unshift(object); - } - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Pixelate.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Remove white filter class + * @class fabric.Image.filters.RemoveColor + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.RemoveColor#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.RemoveColor({ + * threshold: 0.2, + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.RemoveColor = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.RemoveColor.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'RemoveColor', + /** + * Color to remove, in any format understood by fabric.Color. + * @param {String} type + * @default + */ + color: '#FFFFFF', + /** + * Fragment source for the brightness program + */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec4 uLow;\n' + + 'uniform vec4 uHigh;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'gl_FragColor = texture2D(uTexture, vTexCoord);\n' + + 'if(all(greaterThan(gl_FragColor.rgb,uLow.rgb)) && all(greaterThan(uHigh.rgb,gl_FragColor.rgb))) {\n' + + 'gl_FragColor.a = 0.0;\n' + + '}\n' + + '}', + /** + * distance to actual color, as value up or down from each r,g,b + * between 0 and 1 + **/ + distance: 0.02, + /** + * For color to remove inside distance, use alpha channel for a smoother deletion + * NOT IMPLEMENTED YET + **/ + useAlpha: false, + /** + * Constructor + * @memberOf fabric.Image.filters.RemoveWhite.prototype + * @param {Object} [options] Options object + * @param {Number} [options.color=#RRGGBB] Threshold value + * @param {Number} [options.distance=10] Distance value + */ + /** + * Applies filter to canvas element + * @param {Object} canvasEl Canvas element to apply filter to + */ + applyTo2d: function (options) { + var imageData = options.imageData, data = imageData.data, i, distance = this.distance * 255, r, g, b, source = new Color(this.color).getSource(), lowC = [ + source[0] - distance, + source[1] - distance, + source[2] - distance, + ], highC = [ + source[0] + distance, + source[1] + distance, + source[2] + distance, + ]; + for (i = 0; i < data.length; i += 4) { + r = data[i]; + g = data[i + 1]; + b = data[i + 2]; + if (r > lowC[0] && + g > lowC[1] && + b > lowC[2] && + r < highC[0] && + g < highC[1] && + b < highC[2]) { + data[i + 3] = 0; + } + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uLow: gl.getUniformLocation(program, 'uLow'), + uHigh: gl.getUniformLocation(program, 'uHigh'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + var source = new Color(this.color).getSource(), distance = parseFloat(this.distance), lowC = [ + 0 + source[0] / 255 - distance, + 0 + source[1] / 255 - distance, + 0 + source[2] / 255 - distance, + 1, + ], highC = [ + source[0] / 255 + distance, + source[1] / 255 + distance, + source[2] / 255 + distance, + 1, + ]; + gl.uniform4fv(uniformLocations.uLow, lowC); + gl.uniform4fv(uniformLocations.uHigh, highC); + }, + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function () { + return extend(this.callSuper('toObject'), { + color: this.color, + distance: this.distance, + }); + }, + }); /** - * Moves an object or the objects of a multiple selection - * to the top of the stack of drawn objects - * @param {fabric.Object} object Object to send - * @return {fabric.Canvas} thisArg - * @chainable - */ - bringToFront: function (object) { - if (!object) { - return this; - } - var activeSelection = this._activeObject, - i, obj, objs; - if (object === activeSelection && object.type === 'activeSelection') { - objs = activeSelection._objects; - for (i = 0; i < objs.length; i++) { - obj = objs[i]; - removeFromArray(this._objects, obj); - this._objects.push(obj); - } - } - else { - removeFromArray(this._objects, object); - this._objects.push(object); - } - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.RemoveColor.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + var matrices = { + Brownie: [ + 0.5997, 0.34553, -0.27082, 0, 0.186, -0.0377, 0.86095, 0.15059, 0, + -0.1449, 0.24113, -0.07441, 0.44972, 0, -0.02965, 0, 0, 0, 1, 0, + ], + Vintage: [ + 0.62793, 0.32021, -0.03965, 0, 0.03784, 0.02578, 0.64411, 0.03259, 0, + 0.02926, 0.0466, -0.08512, 0.52416, 0, 0.02023, 0, 0, 0, 1, 0, + ], + Kodachrome: [ + 1.12855, -0.39673, -0.03992, 0, 0.24991, -0.16404, 1.08352, -0.05498, 0, + 0.09698, -0.16786, -0.56034, 1.60148, 0, 0.13972, 0, 0, 0, 1, 0, + ], + Technicolor: [ + 1.91252, -0.85453, -0.09155, 0, 0.04624, -0.30878, 1.76589, -0.10601, 0, + -0.27589, -0.2311, -0.75018, 1.84759, 0, 0.12137, 0, 0, 0, 1, 0, + ], + Polaroid: [ + 1.438, -0.062, -0.062, 0, 0, -0.122, 1.378, -0.122, 0, 0, -0.016, -0.016, + 1.483, 0, 0, 0, 0, 0, 1, 0, + ], + Sepia: [ + 0.393, 0.769, 0.189, 0, 0, 0.349, 0.686, 0.168, 0, 0, 0.272, 0.534, 0.131, + 0, 0, 0, 0, 0, 1, 0, + ], + BlackWhite: [ + 1.5, 1.5, 1.5, 0, -1, 1.5, 1.5, 1.5, 0, -1, 1.5, 1.5, 1.5, 0, -1, 0, 0, 0, + 1, 0, + ], + }; + for (var key in matrices) { + filters[key] = createClass(filters.ColorMatrix, + /** @lends fabric.Image.filters.Sepia.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: key, + /** + * Colormatrix for the effect + * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning + * outside the -1, 1 range. + * @param {Array} matrix array of 20 numbers. + * @default + */ + matrix: matrices[key], + /** + * Lock the matrix export for this kind of static, parameter less filters. + */ + mainParameter: false, + /** + * Lock the colormatrix on the color part, skipping alpha + */ + colorsOnly: true, + }); + fabric.Image.filters[key].fromObject = + fabric.Image.filters.BaseFilter.fromObject; + } +})(typeof exports !== 'undefined' ? exports : window); +//@ts-nocheck +(function (global) { + var fabric = global.fabric, filters = fabric.Image.filters, createClass = fabric.util.createClass; /** - * Moves an object or a selection down in stack of drawn objects - * An optional parameter, intersecting allows to move the object in behind - * the first intersecting object. Where intersection is calculated with - * bounding box. If no intersection is found, there will not be change in the - * stack. - * @param {fabric.Object} object Object to send - * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object - * @return {fabric.Canvas} thisArg - * @chainable - */ - sendBackwards: function (object, intersecting) { - if (!object) { - return this; - } - var activeSelection = this._activeObject, - i, obj, idx, newIdx, objs, objsMoved = 0; - - if (object === activeSelection && object.type === 'activeSelection') { - objs = activeSelection._objects; - for (i = 0; i < objs.length; i++) { - obj = objs[i]; - idx = this._objects.indexOf(obj); - if (idx > 0 + objsMoved) { - newIdx = idx - 1; - removeFromArray(this._objects, obj); - this._objects.splice(newIdx, 0, obj); - } - objsMoved++; - } - } - else { - idx = this._objects.indexOf(object); - if (idx !== 0) { - // if object is not on the bottom of stack - newIdx = this._findNewLowerIndex(object, idx, intersecting); - removeFromArray(this._objects, object); - this._objects.splice(newIdx, 0, object); - } - } - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - + * Color Blend filter class + * @class fabric.Image.filter.BlendColor + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @example + * var filter = new fabric.Image.filters.BlendColor({ + * color: '#000', + * mode: 'multiply' + * }); + * + * var filter = new fabric.Image.filters.BlendImage({ + * image: fabricImageObject, + * mode: 'multiply', + * alpha: 0.5 + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.BlendColor = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Blend.prototype */ { + type: 'BlendColor', + /** + * Color to make the blend operation with. default to a reddish color since black or white + * gives always strong result. + * @type String + * @default + **/ + color: '#F95C63', + /** + * Blend mode for the filter: one of multiply, add, diff, screen, subtract, + * darken, lighten, overlay, exclusion, tint. + * @type String + * @default + **/ + mode: 'multiply', + /** + * alpha value. represent the strength of the blend color operation. + * @type Number + * @default + **/ + alpha: 1, + /** + * Fragment source for the Multiply program + */ + fragmentSource: { + multiply: 'gl_FragColor.rgb *= uColor.rgb;\n', + screen: 'gl_FragColor.rgb = 1.0 - (1.0 - gl_FragColor.rgb) * (1.0 - uColor.rgb);\n', + add: 'gl_FragColor.rgb += uColor.rgb;\n', + diff: 'gl_FragColor.rgb = abs(gl_FragColor.rgb - uColor.rgb);\n', + subtract: 'gl_FragColor.rgb -= uColor.rgb;\n', + lighten: 'gl_FragColor.rgb = max(gl_FragColor.rgb, uColor.rgb);\n', + darken: 'gl_FragColor.rgb = min(gl_FragColor.rgb, uColor.rgb);\n', + exclusion: 'gl_FragColor.rgb += uColor.rgb - 2.0 * (uColor.rgb * gl_FragColor.rgb);\n', + overlay: 'if (uColor.r < 0.5) {\n' + + 'gl_FragColor.r *= 2.0 * uColor.r;\n' + + '} else {\n' + + 'gl_FragColor.r = 1.0 - 2.0 * (1.0 - gl_FragColor.r) * (1.0 - uColor.r);\n' + + '}\n' + + 'if (uColor.g < 0.5) {\n' + + 'gl_FragColor.g *= 2.0 * uColor.g;\n' + + '} else {\n' + + 'gl_FragColor.g = 1.0 - 2.0 * (1.0 - gl_FragColor.g) * (1.0 - uColor.g);\n' + + '}\n' + + 'if (uColor.b < 0.5) {\n' + + 'gl_FragColor.b *= 2.0 * uColor.b;\n' + + '} else {\n' + + 'gl_FragColor.b = 1.0 - 2.0 * (1.0 - gl_FragColor.b) * (1.0 - uColor.b);\n' + + '}\n', + tint: 'gl_FragColor.rgb *= (1.0 - uColor.a);\n' + + 'gl_FragColor.rgb += uColor.rgb;\n', + }, + /** + * build the fragment source for the filters, joining the common part with + * the specific one. + * @param {String} mode the mode of the filter, a key of this.fragmentSource + * @return {String} the source to be compiled + * @private + */ + buildSource: function (mode) { + return ('precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec4 uColor;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'gl_FragColor = color;\n' + + 'if (color.a > 0.0) {\n' + + this.fragmentSource[mode] + + '}\n' + + '}'); + }, + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function (options) { + var cacheKey = this.type + '_' + this.mode, shaderSource; + if (!options.programCache.hasOwnProperty(cacheKey)) { + shaderSource = this.buildSource(this.mode); + options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); + } + return options.programCache[cacheKey]; + }, + /** + * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function (options) { + var imageData = options.imageData, data = imageData.data, iLen = data.length, tr, tg, tb, r, g, b, source, alpha1 = 1 - this.alpha; + source = new Color(this.color).getSource(); + tr = source[0] * this.alpha; + tg = source[1] * this.alpha; + tb = source[2] * this.alpha; + for (var i = 0; i < iLen; i += 4) { + r = data[i]; + g = data[i + 1]; + b = data[i + 2]; + switch (this.mode) { + case 'multiply': + data[i] = (r * tr) / 255; + data[i + 1] = (g * tg) / 255; + data[i + 2] = (b * tb) / 255; + break; + case 'screen': + data[i] = 255 - ((255 - r) * (255 - tr)) / 255; + data[i + 1] = 255 - ((255 - g) * (255 - tg)) / 255; + data[i + 2] = 255 - ((255 - b) * (255 - tb)) / 255; + break; + case 'add': + data[i] = r + tr; + data[i + 1] = g + tg; + data[i + 2] = b + tb; + break; + case 'diff': + case 'difference': + data[i] = Math.abs(r - tr); + data[i + 1] = Math.abs(g - tg); + data[i + 2] = Math.abs(b - tb); + break; + case 'subtract': + data[i] = r - tr; + data[i + 1] = g - tg; + data[i + 2] = b - tb; + break; + case 'darken': + data[i] = Math.min(r, tr); + data[i + 1] = Math.min(g, tg); + data[i + 2] = Math.min(b, tb); + break; + case 'lighten': + data[i] = Math.max(r, tr); + data[i + 1] = Math.max(g, tg); + data[i + 2] = Math.max(b, tb); + break; + case 'overlay': + data[i] = + tr < 128 + ? (2 * r * tr) / 255 + : 255 - (2 * (255 - r) * (255 - tr)) / 255; + data[i + 1] = + tg < 128 + ? (2 * g * tg) / 255 + : 255 - (2 * (255 - g) * (255 - tg)) / 255; + data[i + 2] = + tb < 128 + ? (2 * b * tb) / 255 + : 255 - (2 * (255 - b) * (255 - tb)) / 255; + break; + case 'exclusion': + data[i] = tr + r - (2 * tr * r) / 255; + data[i + 1] = tg + g - (2 * tg * g) / 255; + data[i + 2] = tb + b - (2 * tb * b) / 255; + break; + case 'tint': + data[i] = tr + r * alpha1; + data[i + 1] = tg + g * alpha1; + data[i + 2] = tb + b * alpha1; + } + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uColor: gl.getUniformLocation(program, 'uColor'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + var source = new Color(this.color).getSource(); + source[0] = (this.alpha * source[0]) / 255; + source[1] = (this.alpha * source[1]) / 255; + source[2] = (this.alpha * source[2]) / 255; + source[3] = this.alpha; + gl.uniform4fv(uniformLocations.uColor, source); + }, + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function () { + return { + type: this.type, + color: this.color, + mode: this.mode, + alpha: this.alpha, + }; + }, + }); /** - * @private + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} */ - _findNewLowerIndex: function(object, idx, intersecting) { - var newIdx, i; - - if (intersecting) { - newIdx = idx; - - // traverse down the stack looking for the nearest intersecting object - for (i = idx - 1; i >= 0; --i) { - - var isIntersecting = object.intersectsWithObject(this._objects[i]) || - object.isContainedWithinObject(this._objects[i]) || - this._objects[i].isContainedWithinObject(object); - - if (isIntersecting) { - newIdx = i; - break; - } - } - } - else { - newIdx = idx - 1; - } - - return newIdx; - }, + fabric.Image.filters.BlendColor.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); +//@ts-nocheck +(function (global) { + var fabric = global.fabric, filters = fabric.Image.filters, createClass = fabric.util.createClass; /** - * Moves an object or a selection up in stack of drawn objects - * An optional parameter, intersecting allows to move the object in front - * of the first intersecting object. Where intersection is calculated with - * bounding box. If no intersection is found, there will not be change in the - * stack. - * @param {fabric.Object} object Object to send - * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object - * @return {fabric.Canvas} thisArg - * @chainable - */ - bringForward: function (object, intersecting) { - if (!object) { - return this; - } - var activeSelection = this._activeObject, - i, obj, idx, newIdx, objs, objsMoved = 0; - - if (object === activeSelection && object.type === 'activeSelection') { - objs = activeSelection._objects; - for (i = objs.length; i--;) { - obj = objs[i]; - idx = this._objects.indexOf(obj); - if (idx < this._objects.length - 1 - objsMoved) { - newIdx = idx + 1; - removeFromArray(this._objects, obj); - this._objects.splice(newIdx, 0, obj); - } - objsMoved++; - } - } - else { - idx = this._objects.indexOf(object); - if (idx !== this._objects.length - 1) { - // if object is not on top of stack (last item in an array) - newIdx = this._findNewUpperIndex(object, idx, intersecting); - removeFromArray(this._objects, object); - this._objects.splice(newIdx, 0, object); - } - } - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - + * Image Blend filter class + * @class fabric.Image.filter.BlendImage + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @example + * var filter = new fabric.Image.filters.BlendColor({ + * color: '#000', + * mode: 'multiply' + * }); + * + * var filter = new fabric.Image.filters.BlendImage({ + * image: fabricImageObject, + * mode: 'multiply', + * alpha: 0.5 + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.BlendImage = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.BlendImage.prototype */ { + type: 'BlendImage', + /** + * Color to make the blend operation with. default to a reddish color since black or white + * gives always strong result. + **/ + image: null, + /** + * Blend mode for the filter (one of "multiply", "mask") + * @type String + * @default + **/ + mode: 'multiply', + /** + * alpha value. represent the strength of the blend image operation. + * not implemented. + **/ + alpha: 1, + vertexSource: 'attribute vec2 aPosition;\n' + + 'varying vec2 vTexCoord;\n' + + 'varying vec2 vTexCoord2;\n' + + 'uniform mat3 uTransformMatrix;\n' + + 'void main() {\n' + + 'vTexCoord = aPosition;\n' + + 'vTexCoord2 = (uTransformMatrix * vec3(aPosition, 1.0)).xy;\n' + + 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\n' + + '}', + /** + * Fragment source for the Multiply program + */ + fragmentSource: { + multiply: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform sampler2D uImage;\n' + + 'uniform vec4 uColor;\n' + + 'varying vec2 vTexCoord;\n' + + 'varying vec2 vTexCoord2;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'vec4 color2 = texture2D(uImage, vTexCoord2);\n' + + 'color.rgba *= color2.rgba;\n' + + 'gl_FragColor = color;\n' + + '}', + mask: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform sampler2D uImage;\n' + + 'uniform vec4 uColor;\n' + + 'varying vec2 vTexCoord;\n' + + 'varying vec2 vTexCoord2;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'vec4 color2 = texture2D(uImage, vTexCoord2);\n' + + 'color.a = color2.a;\n' + + 'gl_FragColor = color;\n' + + '}', + }, + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function (options) { + var cacheKey = this.type + '_' + this.mode; + var shaderSource = this.fragmentSource[this.mode]; + if (!options.programCache.hasOwnProperty(cacheKey)) { + options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); + } + return options.programCache[cacheKey]; + }, + applyToWebGL: function (options) { + // load texture to blend. + var gl = options.context, texture = this.createTexture(options.filterBackend, this.image); + this.bindAdditionalTexture(gl, texture, gl.TEXTURE1); + this.callSuper('applyToWebGL', options); + this.unbindAdditionalTexture(gl, gl.TEXTURE1); + }, + createTexture: function (backend, image) { + return backend.getCachedTexture(image.cacheKey, image._element); + }, + /** + * Calculate a transformMatrix to adapt the image to blend over + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + calculateMatrix: function () { + var image = this.image, width = image._element.width, height = image._element.height; + return [ + 1 / image.scaleX, + 0, + 0, + 0, + 1 / image.scaleY, + 0, + -image.left / width, + -image.top / height, + 1, + ]; + }, + /** + * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function (options) { + var imageData = options.imageData, resources = options.filterBackend.resources, data = imageData.data, iLen = data.length, width = imageData.width, height = imageData.height, tr, tg, tb, ta, r, g, b, a, canvas1, context, image = this.image, blendData; + if (!resources.blendImage) { + resources.blendImage = fabric.util.createCanvasElement(); + } + canvas1 = resources.blendImage; + context = canvas1.getContext('2d'); + if (canvas1.width !== width || canvas1.height !== height) { + canvas1.width = width; + canvas1.height = height; + } + else { + context.clearRect(0, 0, width, height); + } + context.setTransform(image.scaleX, 0, 0, image.scaleY, image.left, image.top); + context.drawImage(image._element, 0, 0, width, height); + blendData = context.getImageData(0, 0, width, height).data; + for (var i = 0; i < iLen; i += 4) { + r = data[i]; + g = data[i + 1]; + b = data[i + 2]; + a = data[i + 3]; + tr = blendData[i]; + tg = blendData[i + 1]; + tb = blendData[i + 2]; + ta = blendData[i + 3]; + switch (this.mode) { + case 'multiply': + data[i] = (r * tr) / 255; + data[i + 1] = (g * tg) / 255; + data[i + 2] = (b * tb) / 255; + data[i + 3] = (a * ta) / 255; + break; + case 'mask': + data[i + 3] = ta; + break; + } + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uTransformMatrix: gl.getUniformLocation(program, 'uTransformMatrix'), + uImage: gl.getUniformLocation(program, 'uImage'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + var matrix = this.calculateMatrix(); + gl.uniform1i(uniformLocations.uImage, 1); // texture unit 1. + gl.uniformMatrix3fv(uniformLocations.uTransformMatrix, false, matrix); + }, + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function () { + return { + type: this.type, + image: this.image && this.image.toObject(), + mode: this.mode, + alpha: this.alpha, + }; + }, + }); /** - * @private - */ - _findNewUpperIndex: function(object, idx, intersecting) { - var newIdx, i, len; - - if (intersecting) { - newIdx = idx; - - // traverse up the stack looking for the nearest intersecting object - for (i = idx + 1, len = this._objects.length; i < len; ++i) { - - var isIntersecting = object.intersectsWithObject(this._objects[i]) || - object.isContainedWithinObject(this._objects[i]) || - this._objects[i].isContainedWithinObject(object); - - if (isIntersecting) { - newIdx = i; - break; - } - } - } - else { - newIdx = idx + 1; - } - - return newIdx; - }, + * Create filter instance from an object representation + * @static + * @param {object} object Object to create an instance from + * @param {object} [options] + * @param {AbortSignal} [options.signal] handle aborting image loading, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @returns {Promise} + */ + fabric.Image.filters.BlendImage.fromObject = function (object, options) { + return fabric.Image.fromObject(object.image, options).then(function (image) { + return new fabric.Image.filters.BlendImage(Object.assign({}, object, { image: image })); + }); + }; +})(typeof exports !== 'undefined' ? exports : window); +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), pow = Math.pow, floor = Math.floor, sqrt = Math.sqrt, abs = Math.abs, round = Math.round, sin = Math.sin, ceil = Math.ceil, filters = fabric.Image.filters, createClass = fabric.util.createClass; /** - * Moves an object to specified level in stack of drawn objects - * @param {fabric.Object} object Object to send - * @param {Number} index Position to move to - * @return {fabric.Canvas} thisArg - * @chainable - */ - moveTo: function (object, index) { - removeFromArray(this._objects, object); - this._objects.splice(index, 0, object); - return this.renderOnAddRemove && this.requestRenderAll(); - }, - + * Resize image filter class + * @class fabric.Image.filters.Resize + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Resize(); + * object.filters.push(filter); + * object.applyFilters(canvas.renderAll.bind(canvas)); + */ + filters.Resize = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Resize.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Resize', + /** + * Resize type + * for webgl resizeType is just lanczos, for canvas2d can be: + * bilinear, hermite, sliceHack, lanczos. + * @param {String} resizeType + * @default + */ + resizeType: 'hermite', + /** + * Scale factor for resizing, x axis + * @param {Number} scaleX + * @default + */ + scaleX: 1, + /** + * Scale factor for resizing, y axis + * @param {Number} scaleY + * @default + */ + scaleY: 1, + /** + * LanczosLobes parameter for lanczos filter, valid for resizeType lanczos + * @param {Number} lanczosLobes + * @default + */ + lanczosLobes: 3, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uDelta: gl.getUniformLocation(program, 'uDelta'), + uTaps: gl.getUniformLocation(program, 'uTaps'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform2fv(uniformLocations.uDelta, this.horizontal ? [1 / this.width, 0] : [0, 1 / this.height]); + gl.uniform1fv(uniformLocations.uTaps, this.taps); + }, + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function (options) { + var filterWindow = this.getFilterWindow(), cacheKey = this.type + '_' + filterWindow; + if (!options.programCache.hasOwnProperty(cacheKey)) { + var fragmentShader = this.generateShader(filterWindow); + options.programCache[cacheKey] = this.createProgram(options.context, fragmentShader); + } + return options.programCache[cacheKey]; + }, + getFilterWindow: function () { + var scale = this.tempScale; + return Math.ceil(this.lanczosLobes / scale); + }, + getTaps: function () { + var lobeFunction = this.lanczosCreate(this.lanczosLobes), scale = this.tempScale, filterWindow = this.getFilterWindow(), taps = new Array(filterWindow); + for (var i = 1; i <= filterWindow; i++) { + taps[i - 1] = lobeFunction(i * scale); + } + return taps; + }, + /** + * Generate vertex and shader sources from the necessary steps numbers + * @param {Number} filterWindow + */ + generateShader: function (filterWindow) { + var offsets = new Array(filterWindow), fragmentShader = this.fragmentSourceTOP, filterWindow; + for (var i = 1; i <= filterWindow; i++) { + offsets[i - 1] = i + '.0 * uDelta'; + } + fragmentShader += 'uniform float uTaps[' + filterWindow + '];\n'; + fragmentShader += 'void main() {\n'; + fragmentShader += ' vec4 color = texture2D(uTexture, vTexCoord);\n'; + fragmentShader += ' float sum = 1.0;\n'; + offsets.forEach(function (offset, i) { + fragmentShader += + ' color += texture2D(uTexture, vTexCoord + ' + + offset + + ') * uTaps[' + + i + + '];\n'; + fragmentShader += + ' color += texture2D(uTexture, vTexCoord - ' + + offset + + ') * uTaps[' + + i + + '];\n'; + fragmentShader += ' sum += 2.0 * uTaps[' + i + '];\n'; + }); + fragmentShader += ' gl_FragColor = color / sum;\n'; + fragmentShader += '}'; + return fragmentShader; + }, + fragmentSourceTOP: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec2 uDelta;\n' + + 'varying vec2 vTexCoord;\n', + /** + * Apply the resize filter to the image + * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be executed + * @param {Boolean} options.webgl Whether to use webgl to render the filter. + * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. + * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + applyTo: function (options) { + if (options.webgl) { + options.passes++; + this.width = options.sourceWidth; + this.horizontal = true; + this.dW = Math.round(this.width * this.scaleX); + this.dH = options.sourceHeight; + this.tempScale = this.dW / this.width; + this.taps = this.getTaps(); + options.destinationWidth = this.dW; + this._setupFrameBuffer(options); + this.applyToWebGL(options); + this._swapTextures(options); + options.sourceWidth = options.destinationWidth; + this.height = options.sourceHeight; + this.horizontal = false; + this.dH = Math.round(this.height * this.scaleY); + this.tempScale = this.dH / this.height; + this.taps = this.getTaps(); + options.destinationHeight = this.dH; + this._setupFrameBuffer(options); + this.applyToWebGL(options); + this._swapTextures(options); + options.sourceHeight = options.destinationHeight; + } + else { + this.applyTo2d(options); + } + }, + isNeutralState: function () { + return this.scaleX === 1 && this.scaleY === 1; + }, + lanczosCreate: function (lobes) { + return function (x) { + if (x >= lobes || x <= -lobes) { + return 0.0; + } + if (x < 1.1920929e-7 && x > -1.1920929e-7) { + return 1.0; + } + x *= Math.PI; + var xx = x / lobes; + return ((sin(x) / x) * sin(xx)) / xx; + }; + }, + /** + * Applies filter to canvas element + * @memberOf fabric.Image.filters.Resize.prototype + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} scaleX + * @param {Number} scaleY + */ + applyTo2d: function (options) { + var imageData = options.imageData, scaleX = this.scaleX, scaleY = this.scaleY; + this.rcpScaleX = 1 / scaleX; + this.rcpScaleY = 1 / scaleY; + var oW = imageData.width, oH = imageData.height, dW = round(oW * scaleX), dH = round(oH * scaleY), newData; + if (this.resizeType === 'sliceHack') { + newData = this.sliceByTwo(options, oW, oH, dW, dH); + } + else if (this.resizeType === 'hermite') { + newData = this.hermiteFastResize(options, oW, oH, dW, dH); + } + else if (this.resizeType === 'bilinear') { + newData = this.bilinearFiltering(options, oW, oH, dW, dH); + } + else if (this.resizeType === 'lanczos') { + newData = this.lanczosResize(options, oW, oH, dW, dH); + } + options.imageData = newData; + }, + /** + * Filter sliceByTwo + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} oW Original Width + * @param {Number} oH Original Height + * @param {Number} dW Destination Width + * @param {Number} dH Destination Height + * @returns {ImageData} + */ + sliceByTwo: function (options, oW, oH, dW, dH) { + var imageData = options.imageData, mult = 0.5, doneW = false, doneH = false, stepW = oW * mult, stepH = oH * mult, resources = fabric.filterBackend.resources, tmpCanvas, ctx, sX = 0, sY = 0, dX = oW, dY = 0; + if (!resources.sliceByTwo) { + resources.sliceByTwo = document.createElement('canvas'); + } + tmpCanvas = resources.sliceByTwo; + if (tmpCanvas.width < oW * 1.5 || tmpCanvas.height < oH) { + tmpCanvas.width = oW * 1.5; + tmpCanvas.height = oH; + } + ctx = tmpCanvas.getContext('2d'); + ctx.clearRect(0, 0, oW * 1.5, oH); + ctx.putImageData(imageData, 0, 0); + dW = floor(dW); + dH = floor(dH); + while (!doneW || !doneH) { + oW = stepW; + oH = stepH; + if (dW < floor(stepW * mult)) { + stepW = floor(stepW * mult); + } + else { + stepW = dW; + doneW = true; + } + if (dH < floor(stepH * mult)) { + stepH = floor(stepH * mult); + } + else { + stepH = dH; + doneH = true; + } + ctx.drawImage(tmpCanvas, sX, sY, oW, oH, dX, dY, stepW, stepH); + sX = dX; + sY = dY; + dY += stepH; + } + return ctx.getImageData(sX, sY, dW, dH); + }, + /** + * Filter lanczosResize + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} oW Original Width + * @param {Number} oH Original Height + * @param {Number} dW Destination Width + * @param {Number} dH Destination Height + * @returns {ImageData} + */ + lanczosResize: function (options, oW, oH, dW, dH) { + function process(u) { + var v, i, weight, idx, a, red, green, blue, alpha, fX, fY; + center.x = (u + 0.5) * ratioX; + icenter.x = floor(center.x); + for (v = 0; v < dH; v++) { + center.y = (v + 0.5) * ratioY; + icenter.y = floor(center.y); + a = 0; + red = 0; + green = 0; + blue = 0; + alpha = 0; + for (i = icenter.x - range2X; i <= icenter.x + range2X; i++) { + if (i < 0 || i >= oW) { + continue; + } + fX = floor(1000 * abs(i - center.x)); + if (!cacheLanc[fX]) { + cacheLanc[fX] = {}; + } + for (var j = icenter.y - range2Y; j <= icenter.y + range2Y; j++) { + if (j < 0 || j >= oH) { + continue; + } + fY = floor(1000 * abs(j - center.y)); + if (!cacheLanc[fX][fY]) { + cacheLanc[fX][fY] = lanczos(sqrt(pow(fX * rcpRatioX, 2) + pow(fY * rcpRatioY, 2)) / 1000); + } + weight = cacheLanc[fX][fY]; + if (weight > 0) { + idx = (j * oW + i) * 4; + a += weight; + red += weight * srcData[idx]; + green += weight * srcData[idx + 1]; + blue += weight * srcData[idx + 2]; + alpha += weight * srcData[idx + 3]; + } + } + } + idx = (v * dW + u) * 4; + destData[idx] = red / a; + destData[idx + 1] = green / a; + destData[idx + 2] = blue / a; + destData[idx + 3] = alpha / a; + } + if (++u < dW) { + return process(u); + } + else { + return destImg; + } + } + var srcData = options.imageData.data, destImg = options.ctx.createImageData(dW, dH), destData = destImg.data, lanczos = this.lanczosCreate(this.lanczosLobes), ratioX = this.rcpScaleX, ratioY = this.rcpScaleY, rcpRatioX = 2 / this.rcpScaleX, rcpRatioY = 2 / this.rcpScaleY, range2X = ceil((ratioX * this.lanczosLobes) / 2), range2Y = ceil((ratioY * this.lanczosLobes) / 2), cacheLanc = {}, center = {}, icenter = {}; + return process(0); + }, + /** + * bilinearFiltering + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} oW Original Width + * @param {Number} oH Original Height + * @param {Number} dW Destination Width + * @param {Number} dH Destination Height + * @returns {ImageData} + */ + bilinearFiltering: function (options, oW, oH, dW, dH) { + var a, b, c, d, x, y, i, j, xDiff, yDiff, chnl, color, offset = 0, origPix, ratioX = this.rcpScaleX, ratioY = this.rcpScaleY, w4 = 4 * (oW - 1), img = options.imageData, pixels = img.data, destImage = options.ctx.createImageData(dW, dH), destPixels = destImage.data; + for (i = 0; i < dH; i++) { + for (j = 0; j < dW; j++) { + x = floor(ratioX * j); + y = floor(ratioY * i); + xDiff = ratioX * j - x; + yDiff = ratioY * i - y; + origPix = 4 * (y * oW + x); + for (chnl = 0; chnl < 4; chnl++) { + a = pixels[origPix + chnl]; + b = pixels[origPix + 4 + chnl]; + c = pixels[origPix + w4 + chnl]; + d = pixels[origPix + w4 + 4 + chnl]; + color = + a * (1 - xDiff) * (1 - yDiff) + + b * xDiff * (1 - yDiff) + + c * yDiff * (1 - xDiff) + + d * xDiff * yDiff; + destPixels[offset++] = color; + } + } + } + return destImage; + }, + /** + * hermiteFastResize + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} oW Original Width + * @param {Number} oH Original Height + * @param {Number} dW Destination Width + * @param {Number} dH Destination Height + * @returns {ImageData} + */ + hermiteFastResize: function (options, oW, oH, dW, dH) { + var ratioW = this.rcpScaleX, ratioH = this.rcpScaleY, ratioWHalf = ceil(ratioW / 2), ratioHHalf = ceil(ratioH / 2), img = options.imageData, data = img.data, img2 = options.ctx.createImageData(dW, dH), data2 = img2.data; + for (var j = 0; j < dH; j++) { + for (var i = 0; i < dW; i++) { + var x2 = (i + j * dW) * 4, weight = 0, weights = 0, weightsAlpha = 0, gxR = 0, gxG = 0, gxB = 0, gxA = 0, centerY = (j + 0.5) * ratioH; + for (var yy = floor(j * ratioH); yy < (j + 1) * ratioH; yy++) { + var dy = abs(centerY - (yy + 0.5)) / ratioHHalf, centerX = (i + 0.5) * ratioW, w0 = dy * dy; + for (var xx = floor(i * ratioW); xx < (i + 1) * ratioW; xx++) { + var dx = abs(centerX - (xx + 0.5)) / ratioWHalf, w = sqrt(w0 + dx * dx); + /* eslint-disable max-depth */ + if (w > 1 && w < -1) { + continue; + } + //hermite filter + weight = 2 * w * w * w - 3 * w * w + 1; + if (weight > 0) { + dx = 4 * (xx + yy * oW); + //alpha + gxA += weight * data[dx + 3]; + weightsAlpha += weight; + //colors + if (data[dx + 3] < 255) { + weight = (weight * data[dx + 3]) / 250; + } + gxR += weight * data[dx]; + gxG += weight * data[dx + 1]; + gxB += weight * data[dx + 2]; + weights += weight; + } + /* eslint-enable max-depth */ + } + } + data2[x2] = gxR / weights; + data2[x2 + 1] = gxG / weights; + data2[x2 + 2] = gxB / weights; + data2[x2 + 3] = gxA / weightsAlpha; + } + } + return img2; + }, + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function () { + return { + type: this.type, + scaleX: this.scaleX, + scaleY: this.scaleY, + resizeType: this.resizeType, + lanczosLobes: this.lanczosLobes, + }; + }, + }); /** - * Clears a canvas element and dispose objects - * @return {fabric.Canvas} thisArg - * @chainable - */ - dispose: function () { - // cancel eventually ongoing renders - if (this.isRendering) { - fabric.util.cancelAnimFrame(this.isRendering); - this.isRendering = 0; - } - this.forEachObject(function(object) { - object.dispose && object.dispose(); - }); - this._objects = []; - if (this.backgroundImage && this.backgroundImage.dispose) { - this.backgroundImage.dispose(); - } - this.backgroundImage = null; - if (this.overlayImage && this.overlayImage.dispose) { - this.overlayImage.dispose(); - } - this.overlayImage = null; - this._iTextInstances = null; - this.contextContainer = null; - // restore canvas style - this.lowerCanvasEl.classList.remove('lower-canvas'); - fabric.util.setStyle(this.lowerCanvasEl, this._originalCanvasStyle); - delete this._originalCanvasStyle; - // restore canvas size to original size in case retina scaling was applied - this.lowerCanvasEl.setAttribute('width', this.width); - this.lowerCanvasEl.setAttribute('height', this.height); - fabric.util.cleanUpJsdomNode(this.lowerCanvasEl); - this.lowerCanvasEl = undefined; - return this; - }, - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Resize.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Contrast filter class + * @class fabric.Image.filters.Contrast + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Contrast#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Contrast({ + * contrast: 0.25 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Contrast = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Contrast.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Contrast', + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uContrast;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'float contrastF = 1.015 * (uContrast + 1.0) / (1.0 * (1.015 - uContrast));\n' + + 'color.rgb = contrastF * (color.rgb - 0.5) + 0.5;\n' + + 'gl_FragColor = color;\n' + + '}', + /** + * contrast value, range from -1 to 1. + * @param {Number} contrast + * @default 0 + */ + contrast: 0, + mainParameter: 'contrast', + /** + * Constructor + * @memberOf fabric.Image.filters.Contrast.prototype + * @param {Object} [options] Options object + * @param {Number} [options.contrast=0] Value to contrast the image up (-1...1) + */ + /** + * Apply the Contrast operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function (options) { + if (this.contrast === 0) { + return; + } + var imageData = options.imageData, i, len, data = imageData.data, len = data.length, contrast = Math.floor(this.contrast * 255), contrastF = (259 * (contrast + 255)) / (255 * (259 - contrast)); + for (i = 0; i < len; i += 4) { + data[i] = contrastF * (data[i] - 128) + 128; + data[i + 1] = contrastF * (data[i + 1] - 128) + 128; + data[i + 2] = contrastF * (data[i + 2] - 128) + 128; + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uContrast: gl.getUniformLocation(program, 'uContrast'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform1f(uniformLocations.uContrast, this.contrast); + }, + }); /** - * Returns a string representation of an instance - * @return {String} string representation of an instance - */ - toString: function () { - return '#'; - } - }); - - extend(fabric.StaticCanvas.prototype, fabric.Observable); - extend(fabric.StaticCanvas.prototype, fabric.Collection); - extend(fabric.StaticCanvas.prototype, fabric.DataURLExporter); - - extend(fabric.StaticCanvas, /** @lends fabric.StaticCanvas */ { - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Contrast.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Saturate filter class + * @class fabric.Image.filters.Saturation + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Saturation#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Saturation({ + * saturation: 1 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Saturation = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Saturation.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Saturation', + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uSaturation;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'float rgMax = max(color.r, color.g);\n' + + 'float rgbMax = max(rgMax, color.b);\n' + + 'color.r += rgbMax != color.r ? (rgbMax - color.r) * uSaturation : 0.00;\n' + + 'color.g += rgbMax != color.g ? (rgbMax - color.g) * uSaturation : 0.00;\n' + + 'color.b += rgbMax != color.b ? (rgbMax - color.b) * uSaturation : 0.00;\n' + + 'gl_FragColor = color;\n' + + '}', + /** + * Saturation value, from -1 to 1. + * Increases/decreases the color saturation. + * A value of 0 has no effect. + * + * @param {Number} saturation + * @default + */ + saturation: 0, + mainParameter: 'saturation', + /** + * Constructor + * @memberOf fabric.Image.filters.Saturate.prototype + * @param {Object} [options] Options object + * @param {Number} [options.saturate=0] Value to saturate the image (-1...1) + */ + /** + * Apply the Saturation operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function (options) { + if (this.saturation === 0) { + return; + } + var imageData = options.imageData, data = imageData.data, len = data.length, adjust = -this.saturation, i, max; + for (i = 0; i < len; i += 4) { + max = Math.max(data[i], data[i + 1], data[i + 2]); + data[i] += max !== data[i] ? (max - data[i]) * adjust : 0; + data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * adjust : 0; + data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * adjust : 0; + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uSaturation: gl.getUniformLocation(program, 'uSaturation'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform1f(uniformLocations.uSaturation, -this.saturation); + }, + }); /** + * Create filter instance from an object representation * @static - * @type String - * @default - */ - EMPTY_JSON: '{"objects": [], "background": "white"}', - + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Saturation.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Vibrance filter class + * @class fabric.Image.filters.Vibrance + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Vibrance#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Vibrance({ + * vibrance: 1 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Vibrance = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Vibrance.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Vibrance', + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uVibrance;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'float max = max(color.r, max(color.g, color.b));\n' + + 'float avg = (color.r + color.g + color.b) / 3.0;\n' + + 'float amt = (abs(max - avg) * 2.0) * uVibrance;\n' + + 'color.r += max != color.r ? (max - color.r) * amt : 0.00;\n' + + 'color.g += max != color.g ? (max - color.g) * amt : 0.00;\n' + + 'color.b += max != color.b ? (max - color.b) * amt : 0.00;\n' + + 'gl_FragColor = color;\n' + + '}', + /** + * Vibrance value, from -1 to 1. + * Increases/decreases the saturation of more muted colors with less effect on saturated colors. + * A value of 0 has no effect. + * + * @param {Number} vibrance + * @default + */ + vibrance: 0, + mainParameter: 'vibrance', + /** + * Constructor + * @memberOf fabric.Image.filters.Vibrance.prototype + * @param {Object} [options] Options object + * @param {Number} [options.vibrance=0] Vibrance value for the image (between -1 and 1) + */ + /** + * Apply the Vibrance operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function (options) { + if (this.vibrance === 0) { + return; + } + var imageData = options.imageData, data = imageData.data, len = data.length, adjust = -this.vibrance, i, max, avg, amt; + for (i = 0; i < len; i += 4) { + max = Math.max(data[i], data[i + 1], data[i + 2]); + avg = (data[i] + data[i + 1] + data[i + 2]) / 3; + amt = ((Math.abs(max - avg) * 2) / 255) * adjust; + data[i] += max !== data[i] ? (max - data[i]) * amt : 0; + data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * amt : 0; + data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * amt : 0; + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uVibrance: gl.getUniformLocation(program, 'uVibrance'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform1f(uniformLocations.uVibrance, -this.vibrance); + }, + }); /** - * Provides a way to check support of some of the canvas methods - * (either those of HTMLCanvasElement itself, or rendering context) - * - * @param {String} methodName Method to check support for; - * Could be one of "setLineDash" - * @return {Boolean | null} `true` if method is supported (or at least exists), - * `null` if canvas element or context can not be initialized - */ - supports: function (methodName) { - var el = createCanvasElement(); - - if (!el || !el.getContext) { - return null; - } - - var ctx = el.getContext('2d'); - if (!ctx) { - return null; - } - - switch (methodName) { - - case 'setLineDash': - return typeof ctx.setLineDash !== 'undefined'; - - default: - return null; - } - } - }); - - /** - * Returns Object representation of canvas - * this alias is provided because if you call JSON.stringify on an instance, - * the toJSON object will be invoked if it exists. - * Having a toJSON method means you can do JSON.stringify(myCanvas) - * @function - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} JSON compatible object - * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization} - * @see {@link http://jsfiddle.net/fabricjs/pec86/|jsFiddle demo} - * @example JSON without additional properties - * var json = canvas.toJSON(); - * @example JSON with additional properties included - * var json = canvas.toJSON(['lockMovementX', 'lockMovementY', 'lockRotation', 'lockScalingX', 'lockScalingY']); - * @example JSON without default values - * canvas.includeDefaultValues = false; - * var json = canvas.toJSON(); - */ - fabric.StaticCanvas.prototype.toJSON = fabric.StaticCanvas.prototype.toObject; - - if (fabric.isLikelyNode) { - fabric.StaticCanvas.prototype.createPNGStream = function() { - var impl = getNodeCanvas(this.lowerCanvasEl); - return impl && impl.createPNGStream(); - }; - fabric.StaticCanvas.prototype.createJPEGStream = function(opts) { - var impl = getNodeCanvas(this.lowerCanvasEl); - return impl && impl.createJPEGStream(opts); - }; - } -})(); - - -/** - * BaseBrush class - * @class fabric.BaseBrush - * @see {@link http://fabricjs.com/freedrawing|Freedrawing demo} - */ -fabric.BaseBrush = fabric.util.createClass(/** @lends fabric.BaseBrush.prototype */ { - - /** - * Color of a brush - * @type String - * @default - */ - color: 'rgb(0, 0, 0)', - - /** - * Width of a brush, has to be a Number, no string literals - * @type Number - * @default - */ - width: 1, - - /** - * Shadow object representing shadow of this shape. - * Backwards incompatibility note: This property replaces "shadowColor" (String), "shadowOffsetX" (Number), - * "shadowOffsetY" (Number) and "shadowBlur" (Number) since v1.2.12 - * @type fabric.Shadow - * @default - */ - shadow: null, - - /** - * Line endings style of a brush (one of "butt", "round", "square") - * @type String - * @default - */ - strokeLineCap: 'round', - - /** - * Corner style of a brush (one of "bevel", "round", "miter") - * @type String - * @default - */ - strokeLineJoin: 'round', - - /** - * Maximum miter length (used for strokeLineJoin = "miter") of a brush's - * @type Number - * @default - */ - strokeMiterLimit: 10, - - /** - * Stroke Dash Array. - * @type Array - * @default - */ - strokeDashArray: null, - - /** - * When `true`, the free drawing is limited to the whiteboard size. Default to false. - * @type Boolean - * @default false - */ - - limitedToCanvasSize: false, - - - /** - * Sets brush styles - * @private - * @param {CanvasRenderingContext2D} ctx - */ - _setBrushStyles: function (ctx) { - ctx.strokeStyle = this.color; - ctx.lineWidth = this.width; - ctx.lineCap = this.strokeLineCap; - ctx.miterLimit = this.strokeMiterLimit; - ctx.lineJoin = this.strokeLineJoin; - ctx.setLineDash(this.strokeDashArray || []); - }, - - /** - * Sets the transformation on given context - * @param {RenderingContext2d} ctx context to render on - * @private - */ - _saveAndTransform: function(ctx) { - var v = this.canvas.viewportTransform; - ctx.save(); - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - }, - - /** - * Sets brush shadow styles - * @private - */ - _setShadow: function() { - if (!this.shadow) { - return; - } - - var canvas = this.canvas, - shadow = this.shadow, - ctx = canvas.contextTop, - zoom = canvas.getZoom(); - if (canvas && canvas._isRetinaScaling()) { - zoom *= fabric.devicePixelRatio; - } - - ctx.shadowColor = shadow.color; - ctx.shadowBlur = shadow.blur * zoom; - ctx.shadowOffsetX = shadow.offsetX * zoom; - ctx.shadowOffsetY = shadow.offsetY * zoom; - }, - - needsFullRender: function() { - var color = new fabric.Color(this.color); - return color.getAlpha() < 1 || !!this.shadow; - }, - - /** - * Removes brush shadow styles - * @private - */ - _resetShadow: function() { - var ctx = this.canvas.contextTop; - - ctx.shadowColor = ''; - ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0; - }, - - /** - * Check is pointer is outside canvas boundaries - * @param {Object} pointer - * @private + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Vibrance.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Blur filter class + * @class fabric.Image.filters.Blur + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Blur#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Blur({ + * blur: 0.5 + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.Blur = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Blur.prototype */ { + type: 'Blur', + /* + 'gl_FragColor = vec4(0.0);', + 'gl_FragColor += texture2D(texture, vTexCoord + -7 * uDelta)*0.0044299121055113265;', + 'gl_FragColor += texture2D(texture, vTexCoord + -6 * uDelta)*0.00895781211794;', + 'gl_FragColor += texture2D(texture, vTexCoord + -5 * uDelta)*0.0215963866053;', + 'gl_FragColor += texture2D(texture, vTexCoord + -4 * uDelta)*0.0443683338718;', + 'gl_FragColor += texture2D(texture, vTexCoord + -3 * uDelta)*0.0776744219933;', + 'gl_FragColor += texture2D(texture, vTexCoord + -2 * uDelta)*0.115876621105;', + 'gl_FragColor += texture2D(texture, vTexCoord + -1 * uDelta)*0.147308056121;', + 'gl_FragColor += texture2D(texture, vTexCoord )*0.159576912161;', + 'gl_FragColor += texture2D(texture, vTexCoord + 1 * uDelta)*0.147308056121;', + 'gl_FragColor += texture2D(texture, vTexCoord + 2 * uDelta)*0.115876621105;', + 'gl_FragColor += texture2D(texture, vTexCoord + 3 * uDelta)*0.0776744219933;', + 'gl_FragColor += texture2D(texture, vTexCoord + 4 * uDelta)*0.0443683338718;', + 'gl_FragColor += texture2D(texture, vTexCoord + 5 * uDelta)*0.0215963866053;', + 'gl_FragColor += texture2D(texture, vTexCoord + 6 * uDelta)*0.00895781211794;', + 'gl_FragColor += texture2D(texture, vTexCoord + 7 * uDelta)*0.0044299121055113265;', */ - _isOutSideCanvas: function(pointer) { - return pointer.x < 0 || pointer.x > this.canvas.getWidth() || pointer.y < 0 || pointer.y > this.canvas.getHeight(); - } -}); - - -(function() { - /** - * PencilBrush class - * @class fabric.PencilBrush - * @extends fabric.BaseBrush - */ - fabric.PencilBrush = fabric.util.createClass(fabric.BaseBrush, /** @lends fabric.PencilBrush.prototype */ { - - /** - * Discard points that are less than `decimate` pixel distant from each other - * @type Number - * @default 0.4 - */ - decimate: 0.4, - - /** - * Draws a straight line between last recorded point to current pointer - * Used for `shift` functionality - * - * @type boolean - * @default false - */ - drawStraightLine: false, - - /** - * The event modifier key that makes the brush draw a straight line. - * If `null` or 'none' or any other string that is not a modifier key the feature is disabled. - * @type {'altKey' | 'shiftKey' | 'ctrlKey' | 'none' | undefined | null} - */ - straightLineKey: 'shiftKey', - + /* eslint-disable max-len */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec2 uDelta;\n' + + 'varying vec2 vTexCoord;\n' + + 'const float nSamples = 15.0;\n' + + 'vec3 v3offset = vec3(12.9898, 78.233, 151.7182);\n' + + 'float random(vec3 scale) {\n' + + /* use the fragment position for a different seed per-pixel */ + 'return fract(sin(dot(gl_FragCoord.xyz, scale)) * 43758.5453);\n' + + '}\n' + + 'void main() {\n' + + 'vec4 color = vec4(0.0);\n' + + 'float total = 0.0;\n' + + 'float offset = random(v3offset);\n' + + 'for (float t = -nSamples; t <= nSamples; t++) {\n' + + 'float percent = (t + offset - 0.5) / nSamples;\n' + + 'float weight = 1.0 - abs(percent);\n' + + 'color += texture2D(uTexture, vTexCoord + uDelta * percent) * weight;\n' + + 'total += weight;\n' + + '}\n' + + 'gl_FragColor = color / total;\n' + + '}', + /* eslint-enable max-len */ + /** + * blur value, in percentage of image dimensions. + * specific to keep the image blur constant at different resolutions + * range between 0 and 1. + * @type Number + * @default + */ + blur: 0, + mainParameter: 'blur', + applyTo: function (options) { + if (options.webgl) { + // this aspectRatio is used to give the same blur to vertical and horizontal + this.aspectRatio = options.sourceWidth / options.sourceHeight; + options.passes++; + this._setupFrameBuffer(options); + this.horizontal = true; + this.applyToWebGL(options); + this._swapTextures(options); + this._setupFrameBuffer(options); + this.horizontal = false; + this.applyToWebGL(options); + this._swapTextures(options); + } + else { + this.applyTo2d(options); + } + }, + applyTo2d: function (options) { + // paint canvasEl with current image data. + //options.ctx.putImageData(options.imageData, 0, 0); + options.imageData = this.simpleBlur(options); + }, + simpleBlur: function (options) { + var resources = options.filterBackend.resources, canvas1, canvas2, width = options.imageData.width, height = options.imageData.height; + if (!resources.blurLayer1) { + resources.blurLayer1 = fabric.util.createCanvasElement(); + resources.blurLayer2 = fabric.util.createCanvasElement(); + } + canvas1 = resources.blurLayer1; + canvas2 = resources.blurLayer2; + if (canvas1.width !== width || canvas1.height !== height) { + canvas2.width = canvas1.width = width; + canvas2.height = canvas1.height = height; + } + var ctx1 = canvas1.getContext('2d'), ctx2 = canvas2.getContext('2d'), nSamples = 15, random, percent, j, i, blur = this.blur * 0.06 * 0.5; + // load first canvas + ctx1.putImageData(options.imageData, 0, 0); + ctx2.clearRect(0, 0, width, height); + for (i = -nSamples; i <= nSamples; i++) { + random = (Math.random() - 0.5) / 4; + percent = i / nSamples; + j = blur * percent * width + random; + ctx2.globalAlpha = 1 - Math.abs(percent); + ctx2.drawImage(canvas1, j, random); + ctx1.drawImage(canvas2, 0, 0); + ctx2.globalAlpha = 1; + ctx2.clearRect(0, 0, canvas2.width, canvas2.height); + } + for (i = -nSamples; i <= nSamples; i++) { + random = (Math.random() - 0.5) / 4; + percent = i / nSamples; + j = blur * percent * height + random; + ctx2.globalAlpha = 1 - Math.abs(percent); + ctx2.drawImage(canvas1, random, j); + ctx1.drawImage(canvas2, 0, 0); + ctx2.globalAlpha = 1; + ctx2.clearRect(0, 0, canvas2.width, canvas2.height); + } + options.ctx.drawImage(canvas1, 0, 0); + var newImageData = options.ctx.getImageData(0, 0, canvas1.width, canvas1.height); + ctx1.globalAlpha = 1; + ctx1.clearRect(0, 0, canvas1.width, canvas1.height); + return newImageData; + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + delta: gl.getUniformLocation(program, 'uDelta'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + var delta = this.chooseRightDelta(); + gl.uniform2fv(uniformLocations.delta, delta); + }, + /** + * choose right value of image percentage to blur with + * @returns {Array} a numeric array with delta values + */ + chooseRightDelta: function () { + var blurScale = 1, delta = [0, 0], blur; + if (this.horizontal) { + if (this.aspectRatio > 1) { + // image is wide, i want to shrink radius horizontal + blurScale = 1 / this.aspectRatio; + } + } + else { + if (this.aspectRatio < 1) { + // image is tall, i want to shrink radius vertical + blurScale = this.aspectRatio; + } + } + blur = blurScale * this.blur * 0.12; + if (this.horizontal) { + delta[0] = blur; + } + else { + delta[1] = blur; + } + return delta; + }, + }); /** - * Constructor - * @param {fabric.Canvas} canvas - * @return {fabric.PencilBrush} Instance of a pencil brush - */ - initialize: function(canvas) { - this.canvas = canvas; - this._points = []; - }, - - needsFullRender: function () { - return this.callSuper('needsFullRender') || this._hasStraightLine; - }, - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + filters.Blur.fromObject = fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * Gamma filter class + * @class fabric.Image.filters.Gamma + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Gamma#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Gamma({ + * gamma: [1, 0.5, 2.1] + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Gamma = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Gamma.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Gamma', + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec3 uGamma;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'vec3 correction = (1.0 / uGamma);\n' + + 'color.r = pow(color.r, correction.r);\n' + + 'color.g = pow(color.g, correction.g);\n' + + 'color.b = pow(color.b, correction.b);\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.rgb *= color.a;\n' + + '}', + /** + * Gamma array value, from 0.01 to 2.2. + * @param {Array} gamma + * @default + */ + gamma: [1, 1, 1], + /** + * Describe the property that is the filter parameter + * @param {String} m + * @default + */ + mainParameter: 'gamma', + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function (options) { + this.gamma = [1, 1, 1]; + filters.BaseFilter.prototype.initialize.call(this, options); + }, + /** + * Apply the Gamma operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function (options) { + var imageData = options.imageData, data = imageData.data, gamma = this.gamma, len = data.length, rInv = 1 / gamma[0], gInv = 1 / gamma[1], bInv = 1 / gamma[2], i; + if (!this.rVals) { + // eslint-disable-next-line + this.rVals = new Uint8Array(256); + // eslint-disable-next-line + this.gVals = new Uint8Array(256); + // eslint-disable-next-line + this.bVals = new Uint8Array(256); + } + // This is an optimization - pre-compute a look-up table for each color channel + // instead of performing these pow calls for each pixel in the image. + for (i = 0, len = 256; i < len; i++) { + this.rVals[i] = Math.pow(i / 255, rInv) * 255; + this.gVals[i] = Math.pow(i / 255, gInv) * 255; + this.bVals[i] = Math.pow(i / 255, bInv) * 255; + } + for (i = 0, len = data.length; i < len; i += 4) { + data[i] = this.rVals[data[i]]; + data[i + 1] = this.gVals[data[i + 1]]; + data[i + 2] = this.bVals[data[i + 2]]; + } + }, + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function (gl, program) { + return { + uGamma: gl.getUniformLocation(program, 'uGamma'), + }; + }, + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function (gl, uniformLocations) { + gl.uniform3fv(uniformLocations.uGamma, this.gamma); + }, + }); /** - * Invoked inside on mouse down and mouse move - * @param {Object} pointer - */ - _drawSegment: function (ctx, p1, p2) { - var midPoint = p1.midPointFrom(p2); - ctx.quadraticCurveTo(p1.x, p1.y, midPoint.x, midPoint.y); - return midPoint; - }, - + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.Gamma.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * A container class that knows how to apply a sequence of filters to an input image. + */ + filters.Composed = createClass(filters.BaseFilter, + /** @lends fabric.Image.filters.Composed.prototype */ { + type: 'Composed', + /** + * A non sparse array of filters to apply + */ + subFilters: [], + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function (options) { + this.callSuper('initialize', options); + // create a new array instead mutating the prototype with push + this.subFilters = this.subFilters.slice(0); + }, + /** + * Apply this container's filters to the input image provided. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be applied. + */ + applyTo: function (options) { + options.passes += this.subFilters.length - 1; + this.subFilters.forEach(function (filter) { + filter.applyTo(options); + }); + }, + /** + * Serialize this filter into JSON. + * + * @returns {Object} A JSON representation of this filter. + */ + toObject: function () { + return fabric.util.object.extend(this.callSuper('toObject'), { + subFilters: this.subFilters.map(function (filter) { + return filter.toObject(); + }), + }); + }, + isNeutralState: function () { + return !this.subFilters.some(function (filter) { + return !filter.isNeutralState(); + }); + }, + }); /** - * Invoked on mouse down - * @param {Object} pointer - */ - onMouseDown: function(pointer, options) { - if (!this.canvas._isMainEvent(options.e)) { - return; - } - this.drawStraightLine = options.e[this.straightLineKey]; - this._prepareForDrawing(pointer); - // capture coordinates immediately - // this allows to draw dots (when movement never occurs) - this._captureDrawingPath(pointer); - this._render(); - }, - + * Deserialize a JSON definition of a ComposedFilter into a concrete instance. + * @static + * @param {oject} object Object to create an instance from + * @param {object} [options] + * @param {AbortSignal} [options.signal] handle aborting `BlendImage` filter loading, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal + * @returns {Promise} + */ + fabric.Image.filters.Composed.fromObject = function (object, options) { + var filters = object.subFilters || []; + return Promise.all(filters.map(function (filter) { + return fabric.Image.filters[filter.type].fromObject(filter, options); + })).then(function (enlivedFilters) { + return new fabric.Image.filters.Composed({ subFilters: enlivedFilters }); + }); + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; + /** + * HueRotation filter class + * @class fabric.Image.filters.HueRotation + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.HueRotation#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.HueRotation({ + * rotation: -0.5 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.HueRotation = createClass(filters.ColorMatrix, + /** @lends fabric.Image.filters.HueRotation.prototype */ { + /** + * Filter type + * @param {String} type + * @default + */ + type: 'HueRotation', + /** + * HueRotation value, from -1 to 1. + * the unit is radians + * @param {Number} myParameter + * @default + */ + rotation: 0, + /** + * Describe the property that is the filter parameter + * @param {String} m + * @default + */ + mainParameter: 'rotation', + calculateMatrix: function () { + var rad = this.rotation * Math.PI, cos = fabric.util.cos(rad), sin = fabric.util.sin(rad), aThird = 1 / 3, aThirdSqtSin = Math.sqrt(aThird) * sin, OneMinusCos = 1 - cos; + this.matrix = [ + 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, + ]; + this.matrix[0] = cos + OneMinusCos / 3; + this.matrix[1] = aThird * OneMinusCos - aThirdSqtSin; + this.matrix[2] = aThird * OneMinusCos + aThirdSqtSin; + this.matrix[5] = aThird * OneMinusCos + aThirdSqtSin; + this.matrix[6] = cos + aThird * OneMinusCos; + this.matrix[7] = aThird * OneMinusCos - aThirdSqtSin; + this.matrix[10] = aThird * OneMinusCos - aThirdSqtSin; + this.matrix[11] = aThird * OneMinusCos + aThirdSqtSin; + this.matrix[12] = cos + aThird * OneMinusCos; + }, + /** + * HueRotation isNeutralState implementation + * Used only in image applyFilters to discard filters that will not have an effect + * on the image + * @param {Object} options + **/ + isNeutralState: function (options) { + this.calculateMatrix(); + return filters.BaseFilter.prototype.isNeutralState.call(this, options); + }, + /** + * Apply this filter to the input image data provided. + * + * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be executed + * @param {Boolean} options.webgl Whether to use webgl to render the filter. + * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. + * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + applyTo: function (options) { + this.calculateMatrix(); + filters.BaseFilter.prototype.applyTo.call(this, options); + }, + }); /** - * Invoked on mouse move - * @param {Object} pointer - */ - onMouseMove: function(pointer, options) { - if (!this.canvas._isMainEvent(options.e)) { - return; - } - this.drawStraightLine = options.e[this.straightLineKey]; - if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { - return; - } - if (this._captureDrawingPath(pointer) && this._points.length > 1) { - if (this.needsFullRender()) { - // redraw curve - // clear top canvas - this.canvas.clearContext(this.canvas.contextTop); - this._render(); - } - else { - var points = this._points, length = points.length, ctx = this.canvas.contextTop; - // draw the curve update - this._saveAndTransform(ctx); - if (this.oldEnd) { + * Create filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Image.filters.HueRotation.fromObject = + fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}); + var additionalProps = ('fontFamily fontWeight fontSize text underline overline linethrough' + + ' textAlign fontStyle lineHeight textBackgroundColor charSpacing styles' + + ' direction path pathStartOffset pathSide pathAlign').split(' '); + /** + * Text class + * @class fabric.Text + * @extends fabric.Object + * @return {fabric.Text} thisArg + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#text} + * @see {@link fabric.Text#initialize} for constructor definition + */ + fabric.Text = fabric.util.createClass(fabric.Object, + /** @lends fabric.Text.prototype */ { + /** + * Properties which when set cause object to change dimensions + * @type Array + * @private + */ + _dimensionAffectingProps: [ + 'fontSize', + 'fontWeight', + 'fontFamily', + 'fontStyle', + 'lineHeight', + 'text', + 'charSpacing', + 'textAlign', + 'styles', + 'path', + 'pathStartOffset', + 'pathSide', + 'pathAlign', + ], + /** + * @private + */ + _reNewline: /\r?\n/, + /** + * Use this regular expression to filter for whitespaces that is not a new line. + * Mostly used when text is 'justify' aligned. + * @private + */ + _reSpacesAndTabs: /[ \t\r]/g, + /** + * Use this regular expression to filter for whitespace that is not a new line. + * Mostly used when text is 'justify' aligned. + * @private + */ + _reSpaceAndTab: /[ \t\r]/, + /** + * Use this regular expression to filter consecutive groups of non spaces. + * Mostly used when text is 'justify' aligned. + * @private + */ + _reWords: /\S+/g, + /** + * Type of an object + * @type String + * @default + */ + type: 'text', + /** + * Font size (in pixels) + * @type Number + * @default + */ + fontSize: 40, + /** + * Font weight (e.g. bold, normal, 400, 600, 800) + * @type {(Number|String)} + * @default + */ + fontWeight: 'normal', + /** + * Font family + * @type String + * @default + */ + fontFamily: 'Times New Roman', + /** + * Text decoration underline. + * @type Boolean + * @default + */ + underline: false, + /** + * Text decoration overline. + * @type Boolean + * @default + */ + overline: false, + /** + * Text decoration linethrough. + * @type Boolean + * @default + */ + linethrough: false, + /** + * Text alignment. Possible values: "left", "center", "right", "justify", + * "justify-left", "justify-center" or "justify-right". + * @type String + * @default + */ + textAlign: 'left', + /** + * Font style . Possible values: "", "normal", "italic" or "oblique". + * @type String + * @default + */ + fontStyle: 'normal', + /** + * Line height + * @type Number + * @default + */ + lineHeight: 1.16, + /** + * Superscript schema object (minimum overlap) + * @type {Object} + * @default + */ + superscript: { + size: 0.6, + baseline: -0.35, // baseline-shift factor (upwards) + }, + /** + * Subscript schema object (minimum overlap) + * @type {Object} + * @default + */ + subscript: { + size: 0.6, + baseline: 0.11, // baseline-shift factor (downwards) + }, + /** + * Background color of text lines + * @type String + * @default + */ + textBackgroundColor: '', + /** + * List of properties to consider when checking if + * state of an object is changed ({@link fabric.Object#hasStateChanged}) + * as well as for history (undo/redo) purposes + * @type Array + */ + stateProperties: fabric.Object.prototype.stateProperties.concat(additionalProps), + /** + * List of properties to consider when checking if cache needs refresh + * @type Array + */ + cacheProperties: fabric.Object.prototype.cacheProperties.concat(additionalProps), + /** + * When defined, an object is rendered via stroke and this property specifies its color. + * Backwards incompatibility note: This property was named "strokeStyle" until v1.1.6 + * @type String + * @default + */ + stroke: null, + /** + * Shadow object representing shadow of this shape. + * Backwards incompatibility note: This property was named "textShadow" (String) until v1.2.11 + * @type fabric.Shadow + * @default + */ + shadow: null, + /** + * fabric.Path that the text should follow. + * since 4.6.0 the path will be drawn automatically. + * if you want to make the path visible, give it a stroke and strokeWidth or fill value + * if you want it to be hidden, assign visible = false to the path. + * This feature is in BETA, and SVG import/export is not yet supported. + * @type fabric.Path + * @example + * var textPath = new fabric.Text('Text on a path', { + * top: 150, + * left: 150, + * textAlign: 'center', + * charSpacing: -50, + * path: new fabric.Path('M 0 0 C 50 -100 150 -100 200 0', { + * strokeWidth: 1, + * visible: false + * }), + * pathSide: 'left', + * pathStartOffset: 0 + * }); + * @default + */ + path: null, + /** + * Offset amount for text path starting position + * Only used when text has a path + * @type Number + * @default + */ + pathStartOffset: 0, + /** + * Which side of the path the text should be drawn on. + * Only used when text has a path + * @type {String} 'left|right' + * @default + */ + pathSide: 'left', + /** + * How text is aligned to the path. This property determines + * the perpendicular position of each character relative to the path. + * (one of "baseline", "center", "ascender", "descender") + * This feature is in BETA, and its behavior may change + * @type String + * @default + */ + pathAlign: 'baseline', + /** + * @private + */ + _fontSizeFraction: 0.222, + /** + * @private + */ + offsets: { + underline: 0.1, + linethrough: -0.315, + overline: -0.88, + }, + /** + * Text Line proportion to font Size (in pixels) + * @type Number + * @default + */ + _fontSizeMult: 1.13, + /** + * additional space between characters + * expressed in thousands of em unit + * @type Number + * @default + */ + charSpacing: 0, + /** + * Object containing character styles - top-level properties -> line numbers, + * 2nd-level properties - character numbers + * @type Object + * @default + */ + styles: null, + /** + * Reference to a context to measure text char or couple of chars + * the cacheContext of the canvas will be used or a freshly created one if the object is not on canvas + * once created it will be referenced on fabric._measuringContext to avoid creating a canvas for every + * text object created. + * @type {CanvasRenderingContext2D} + * @default + */ + _measuringContext: null, + /** + * Baseline shift, styles only, keep at 0 for the main text object + * @type {Number} + * @default + */ + deltaY: 0, + /** + * WARNING: EXPERIMENTAL. NOT SUPPORTED YET + * determine the direction of the text. + * This has to be set manually together with textAlign and originX for proper + * experience. + * some interesting link for the future + * https://www.w3.org/International/questions/qa-bidi-unicode-controls + * @since 4.5.0 + * @type {String} 'ltr|rtl' + * @default + */ + direction: 'ltr', + /** + * Array of properties that define a style unit (of 'styles'). + * @type {Array} + * @default + */ + _styleProperties: [ + 'stroke', + 'strokeWidth', + 'fill', + 'fontFamily', + 'fontSize', + 'fontWeight', + 'fontStyle', + 'underline', + 'overline', + 'linethrough', + 'deltaY', + 'textBackgroundColor', + ], + /** + * contains characters bounding boxes + */ + __charBounds: [], + /** + * use this size when measuring text. To avoid IE11 rounding errors + * @type {Number} + * @default + * @readonly + * @private + */ + CACHE_FONT_SIZE: 400, + /** + * contains the min text width to avoid getting 0 + * @type {Number} + * @default + */ + MIN_TEXT_WIDTH: 2, + /** + * Constructor + * @param {String} text Text string + * @param {Object} [options] Options object + * @return {fabric.Text} thisArg + */ + initialize: function (text, options) { + this.styles = options ? options.styles || {} : {}; + this.text = text; + this.__skipDimension = true; + this.callSuper('initialize', options); + if (this.path) { + this.setPathInfo(); + } + this.__skipDimension = false; + this.initDimensions(); + this.setCoords(); + this.setupState({ propertySet: '_dimensionAffectingProps' }); + }, + /** + * If text has a path, it will add the extra information needed + * for path and text calculations + * @return {fabric.Text} thisArg + */ + setPathInfo: function () { + var path = this.path; + if (path) { + path.segmentsInfo = fabric.util.getPathSegmentsInfo(path.path); + } + }, + /** + * Return a context for measurement of text string. + * if created it gets stored for reuse + * this is for internal use, please do not use it + * @private + * @param {String} text Text string + * @param {Object} [options] Options object + * @return {fabric.Text} thisArg + */ + getMeasuringContext: function () { + // if we did not return we have to measure something. + if (!fabric._measuringContext) { + fabric._measuringContext = + (this.canvas && this.canvas.contextCache) || + fabric.util.createCanvasElement().getContext('2d'); + } + return fabric._measuringContext; + }, + /** + * @private + * Divides text into lines of text and lines of graphemes. + */ + _splitText: function () { + var newLines = this._splitTextIntoLines(this.text); + this.textLines = newLines.lines; + this._textLines = newLines.graphemeLines; + this._unwrappedTextLines = newLines._unwrappedLines; + this._text = newLines.graphemeText; + return newLines; + }, + /** + * Initialize or update text dimensions. + * Updates this.width and this.height with the proper values. + * Does not return dimensions. + */ + initDimensions: function () { + if (this.__skipDimension) { + return; + } + this._splitText(); + this._clearCache(); + if (this.path) { + this.width = this.path.width; + this.height = this.path.height; + } + else { + this.width = + this.calcTextWidth() || this.cursorWidth || this.MIN_TEXT_WIDTH; + this.height = this.calcTextHeight(); + } + if (this.textAlign.indexOf('justify') !== -1) { + // once text is measured we need to make space fatter to make justified text. + this.enlargeSpaces(); + } + this.saveState({ propertySet: '_dimensionAffectingProps' }); + }, + /** + * Enlarge space boxes and shift the others + */ + enlargeSpaces: function () { + var diffSpace, currentLineWidth, numberOfSpaces, accumulatedSpace, line, charBound, spaces; + for (var i = 0, len = this._textLines.length; i < len; i++) { + if (this.textAlign !== 'justify' && + (i === len - 1 || this.isEndOfWrapping(i))) { + continue; + } + accumulatedSpace = 0; + line = this._textLines[i]; + currentLineWidth = this.getLineWidth(i); + if (currentLineWidth < this.width && + (spaces = this.textLines[i].match(this._reSpacesAndTabs))) { + numberOfSpaces = spaces.length; + diffSpace = (this.width - currentLineWidth) / numberOfSpaces; + for (var j = 0, jlen = line.length; j <= jlen; j++) { + charBound = this.__charBounds[i][j]; + if (this._reSpaceAndTab.test(line[j])) { + charBound.width += diffSpace; + charBound.kernedWidth += diffSpace; + charBound.left += accumulatedSpace; + accumulatedSpace += diffSpace; + } + else { + charBound.left += accumulatedSpace; + } + } + } + } + }, + /** + * Detect if the text line is ended with an hard break + * text and itext do not have wrapping, return false + * @return {Boolean} + */ + isEndOfWrapping: function (lineIndex) { + return lineIndex === this._textLines.length - 1; + }, + /** + * Detect if a line has a linebreak and so we need to account for it when moving + * and counting style. + * It return always for text and Itext. + * @return Number + */ + missingNewlineOffset: function () { + return 1; + }, + /** + * Returns string representation of an instance + * @return {String} String representation of text object + */ + toString: function () { + return ('#'); + }, + /** + * Return the dimension and the zoom level needed to create a cache canvas + * big enough to host the object to be cached. + * @private + * @param {Object} dim.x width of object to be cached + * @param {Object} dim.y height of object to be cached + * @return {Object}.width width of canvas + * @return {Object}.height height of canvas + * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache + * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache + */ + _getCacheCanvasDimensions: function () { + var dims = this.callSuper('_getCacheCanvasDimensions'); + var fontSize = this.fontSize; + dims.width += fontSize * dims.zoomX; + dims.height += fontSize * dims.zoomY; + return dims; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function (ctx) { + var path = this.path; + path && !path.isNotVisible() && path._render(ctx); + this._setTextStyles(ctx); + this._renderTextLinesBackground(ctx); + this._renderTextDecoration(ctx, 'underline'); + this._renderText(ctx); + this._renderTextDecoration(ctx, 'overline'); + this._renderTextDecoration(ctx, 'linethrough'); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderText: function (ctx) { + if (this.paintFirst === 'stroke') { + this._renderTextStroke(ctx); + this._renderTextFill(ctx); + } + else { + this._renderTextFill(ctx); + this._renderTextStroke(ctx); + } + }, + /** + * Set the font parameter of the context with the object properties or with charStyle + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Object} [charStyle] object with font style properties + * @param {String} [charStyle.fontFamily] Font Family + * @param {Number} [charStyle.fontSize] Font size in pixels. ( without px suffix ) + * @param {String} [charStyle.fontWeight] Font weight + * @param {String} [charStyle.fontStyle] Font style (italic|normal) + */ + _setTextStyles: function (ctx, charStyle, forMeasuring) { + ctx.textBaseline = 'alphabetical'; + if (this.path) { + switch (this.pathAlign) { + case 'center': + ctx.textBaseline = 'middle'; + break; + case 'ascender': + ctx.textBaseline = 'top'; + break; + case 'descender': + ctx.textBaseline = 'bottom'; + break; + } + } + ctx.font = this._getFontDeclaration(charStyle, forMeasuring); + }, + /** + * calculate and return the text Width measuring each line. + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @return {Number} Maximum width of fabric.Text object + */ + calcTextWidth: function () { + var maxWidth = this.getLineWidth(0); + for (var i = 1, len = this._textLines.length; i < len; i++) { + var currentLineWidth = this.getLineWidth(i); + if (currentLineWidth > maxWidth) { + maxWidth = currentLineWidth; + } + } + return maxWidth; + }, + /** + * @private + * @param {String} method Method name ("fillText" or "strokeText") + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {String} line Text to render + * @param {Number} left Left position of text + * @param {Number} top Top position of text + * @param {Number} lineIndex Index of a line in a text + */ + _renderTextLine: function (method, ctx, line, left, top, lineIndex) { + this._renderChars(method, ctx, line, left, top, lineIndex); + }, + /** + * Renders the text background for lines, taking care of style + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderTextLinesBackground: function (ctx) { + if (!this.textBackgroundColor && + !this.styleHas('textBackgroundColor')) { + return; + } + var heightOfLine, lineLeftOffset, originalFill = ctx.fillStyle, line, lastColor, leftOffset = this._getLeftOffset(), lineTopOffset = this._getTopOffset(), boxStart = 0, boxWidth = 0, charBox, currentColor, path = this.path, drawStart; + for (var i = 0, len = this._textLines.length; i < len; i++) { + heightOfLine = this.getHeightOfLine(i); + if (!this.textBackgroundColor && + !this.styleHas('textBackgroundColor', i)) { + lineTopOffset += heightOfLine; + continue; + } + line = this._textLines[i]; + lineLeftOffset = this._getLineLeftOffset(i); + boxWidth = 0; + boxStart = 0; + lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor'); + for (var j = 0, jlen = line.length; j < jlen; j++) { + charBox = this.__charBounds[i][j]; + currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor'); + if (path) { + ctx.save(); + ctx.translate(charBox.renderLeft, charBox.renderTop); + ctx.rotate(charBox.angle); + ctx.fillStyle = currentColor; + currentColor && + ctx.fillRect(-charBox.width / 2, (-heightOfLine / this.lineHeight) * + (1 - this._fontSizeFraction), charBox.width, heightOfLine / this.lineHeight); + ctx.restore(); + } + else if (currentColor !== lastColor) { + drawStart = leftOffset + lineLeftOffset + boxStart; + if (this.direction === 'rtl') { + drawStart = this.width - drawStart - boxWidth; + } + ctx.fillStyle = lastColor; + lastColor && + ctx.fillRect(drawStart, lineTopOffset, boxWidth, heightOfLine / this.lineHeight); + boxStart = charBox.left; + boxWidth = charBox.width; + lastColor = currentColor; + } + else { + boxWidth += charBox.kernedWidth; + } + } + if (currentColor && !path) { + drawStart = leftOffset + lineLeftOffset + boxStart; + if (this.direction === 'rtl') { + drawStart = this.width - drawStart - boxWidth; + } + ctx.fillStyle = currentColor; + ctx.fillRect(drawStart, lineTopOffset, boxWidth, heightOfLine / this.lineHeight); + } + lineTopOffset += heightOfLine; + } + ctx.fillStyle = originalFill; + // if there is text background color no + // other shadows should be casted + this._removeShadow(ctx); + }, + /** + * measure and return the width of a single character. + * possibly overridden to accommodate different measure logic or + * to hook some external lib for character measurement + * @private + * @param {String} _char, char to be measured + * @param {Object} charStyle style of char to be measured + * @param {String} [previousChar] previous char + * @param {Object} [prevCharStyle] style of previous char + */ + _measureChar: function (_char, charStyle, previousChar, prevCharStyle) { + // first i try to return from cache + var fontCache = cache.getFontCache(charStyle), fontDeclaration = this._getFontDeclaration(charStyle), previousFontDeclaration = this._getFontDeclaration(prevCharStyle), couple = previousChar + _char, stylesAreEqual = fontDeclaration === previousFontDeclaration, width, coupleWidth, previousWidth, fontMultiplier = charStyle.fontSize / this.CACHE_FONT_SIZE, kernedWidth; + if (previousChar && fontCache[previousChar] !== undefined) { + previousWidth = fontCache[previousChar]; + } + if (fontCache[_char] !== undefined) { + kernedWidth = width = fontCache[_char]; + } + if (stylesAreEqual && fontCache[couple] !== undefined) { + coupleWidth = fontCache[couple]; + kernedWidth = coupleWidth - previousWidth; + } + if (width === undefined || + previousWidth === undefined || + coupleWidth === undefined) { + var ctx = this.getMeasuringContext(); + // send a TRUE to specify measuring font size CACHE_FONT_SIZE + this._setTextStyles(ctx, charStyle, true); + } + if (width === undefined) { + kernedWidth = width = ctx.measureText(_char).width; + fontCache[_char] = width; + } + if (previousWidth === undefined && stylesAreEqual && previousChar) { + previousWidth = ctx.measureText(previousChar).width; + fontCache[previousChar] = previousWidth; + } + if (stylesAreEqual && coupleWidth === undefined) { + // we can measure the kerning couple and subtract the width of the previous character + coupleWidth = ctx.measureText(couple).width; + fontCache[couple] = coupleWidth; + kernedWidth = coupleWidth - previousWidth; + } + return { + width: width * fontMultiplier, + kernedWidth: kernedWidth * fontMultiplier, + }; + }, + /** + * Computes height of character at given position + * @param {Number} line the line index number + * @param {Number} _char the character index number + * @return {Number} fontSize of the character + */ + getHeightOfChar: function (line, _char) { + return this.getValueOfPropertyAt(line, _char, 'fontSize'); + }, + /** + * measure a text line measuring all characters. + * @param {Number} lineIndex line number + * @return {Number} Line width + */ + measureLine: function (lineIndex) { + var lineInfo = this._measureLine(lineIndex); + if (this.charSpacing !== 0) { + lineInfo.width -= this._getWidthOfCharSpacing(); + } + if (lineInfo.width < 0) { + lineInfo.width = 0; + } + return lineInfo; + }, + /** + * measure every grapheme of a line, populating __charBounds + * @param {Number} lineIndex + * @return {Object} object.width total width of characters + * @return {Object} object.widthOfSpaces length of chars that match this._reSpacesAndTabs + */ + _measureLine: function (lineIndex) { + var width = 0, i, grapheme, line = this._textLines[lineIndex], prevGrapheme, graphemeInfo, numOfSpaces = 0, lineBounds = new Array(line.length), positionInPath = 0, startingPoint, totalPathLength, path = this.path, reverse = this.pathSide === 'right'; + this.__charBounds[lineIndex] = lineBounds; + for (i = 0; i < line.length; i++) { + grapheme = line[i]; + graphemeInfo = this._getGraphemeBox(grapheme, lineIndex, i, prevGrapheme); + lineBounds[i] = graphemeInfo; + width += graphemeInfo.kernedWidth; + prevGrapheme = grapheme; + } + // this latest bound box represent the last character of the line + // to simplify cursor handling in interactive mode. + lineBounds[i] = { + left: graphemeInfo ? graphemeInfo.left + graphemeInfo.width : 0, + width: 0, + kernedWidth: 0, + height: this.fontSize, + }; + if (path) { + totalPathLength = + path.segmentsInfo[path.segmentsInfo.length - 1].length; + startingPoint = fabric.util.getPointOnPath(path.path, 0, path.segmentsInfo); + startingPoint.x += path.pathOffset.x; + startingPoint.y += path.pathOffset.y; + switch (this.textAlign) { + case 'left': + positionInPath = reverse ? totalPathLength - width : 0; + break; + case 'center': + positionInPath = (totalPathLength - width) / 2; + break; + case 'right': + positionInPath = reverse ? 0 : totalPathLength - width; + break; + //todo - add support for justify + } + positionInPath += this.pathStartOffset * (reverse ? -1 : 1); + for (i = reverse ? line.length - 1 : 0; reverse ? i >= 0 : i < line.length; reverse ? i-- : i++) { + graphemeInfo = lineBounds[i]; + if (positionInPath > totalPathLength) { + positionInPath %= totalPathLength; + } + else if (positionInPath < 0) { + positionInPath += totalPathLength; + } + // it would probably much faster to send all the grapheme position for a line + // and calculate path position/angle at once. + this._setGraphemeOnPath(positionInPath, graphemeInfo, startingPoint); + positionInPath += graphemeInfo.kernedWidth; + } + } + return { width: width, numOfSpaces: numOfSpaces }; + }, + /** + * Calculate the angle and the left,top position of the char that follow a path. + * It appends it to graphemeInfo to be reused later at rendering + * @private + * @param {Number} positionInPath to be measured + * @param {Object} graphemeInfo current grapheme box information + * @param {Object} startingPoint position of the point + */ + _setGraphemeOnPath: function (positionInPath, graphemeInfo, startingPoint) { + var centerPosition = positionInPath + graphemeInfo.kernedWidth / 2, path = this.path; + // we are at currentPositionOnPath. we want to know what point on the path is. + var info = fabric.util.getPointOnPath(path.path, centerPosition, path.segmentsInfo); + graphemeInfo.renderLeft = info.x - startingPoint.x; + graphemeInfo.renderTop = info.y - startingPoint.y; + graphemeInfo.angle = + info.angle + (this.pathSide === 'right' ? Math.PI : 0); + }, + /** + * Measure and return the info of a single grapheme. + * needs the the info of previous graphemes already filled + * Override to customize measuring + * + * @typedef {object} GraphemeBBox + * @property {number} width + * @property {number} height + * @property {number} kernedWidth + * @property {number} left + * @property {number} deltaY + * + * @param {String} grapheme to be measured + * @param {Number} lineIndex index of the line where the char is + * @param {Number} charIndex position in the line + * @param {String} [prevGrapheme] character preceding the one to be measured + * @returns {GraphemeBBox} grapheme bbox + */ + _getGraphemeBox: function (grapheme, lineIndex, charIndex, prevGrapheme, skipLeft) { + var style = this.getCompleteStyleDeclaration(lineIndex, charIndex), prevStyle = prevGrapheme + ? this.getCompleteStyleDeclaration(lineIndex, charIndex - 1) + : {}, info = this._measureChar(grapheme, style, prevGrapheme, prevStyle), kernedWidth = info.kernedWidth, width = info.width, charSpacing; + if (this.charSpacing !== 0) { + charSpacing = this._getWidthOfCharSpacing(); + width += charSpacing; + kernedWidth += charSpacing; + } + var box = { + width: width, + left: 0, + height: style.fontSize, + kernedWidth: kernedWidth, + deltaY: style.deltaY, + }; + if (charIndex > 0 && !skipLeft) { + var previousBox = this.__charBounds[lineIndex][charIndex - 1]; + box.left = + previousBox.left + + previousBox.width + + info.kernedWidth - + info.width; + } + return box; + }, + /** + * Calculate height of line at 'lineIndex' + * @param {Number} lineIndex index of line to calculate + * @return {Number} + */ + getHeightOfLine: function (lineIndex) { + if (this.__lineHeights[lineIndex]) { + return this.__lineHeights[lineIndex]; + } + var line = this._textLines[lineIndex], + // char 0 is measured before the line cycle because it nneds to char + // emptylines + maxHeight = this.getHeightOfChar(lineIndex, 0); + for (var i = 1, len = line.length; i < len; i++) { + maxHeight = Math.max(this.getHeightOfChar(lineIndex, i), maxHeight); + } + return (this.__lineHeights[lineIndex] = + maxHeight * this.lineHeight * this._fontSizeMult); + }, + /** + * Calculate text box height + */ + calcTextHeight: function () { + var lineHeight, height = 0; + for (var i = 0, len = this._textLines.length; i < len; i++) { + lineHeight = this.getHeightOfLine(i); + height += i === len - 1 ? lineHeight / this.lineHeight : lineHeight; + } + return height; + }, + /** + * @private + * @return {Number} Left offset + */ + _getLeftOffset: function () { + return this.direction === 'ltr' ? -this.width / 2 : this.width / 2; + }, + /** + * @private + * @return {Number} Top offset + */ + _getTopOffset: function () { + return -this.height / 2; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {String} method Method name ("fillText" or "strokeText") + */ + _renderTextCommon: function (ctx, method) { + ctx.save(); + var lineHeights = 0, left = this._getLeftOffset(), top = this._getTopOffset(); + for (var i = 0, len = this._textLines.length; i < len; i++) { + var heightOfLine = this.getHeightOfLine(i), maxHeight = heightOfLine / this.lineHeight, leftOffset = this._getLineLeftOffset(i); + this._renderTextLine(method, ctx, this._textLines[i], left + leftOffset, top + lineHeights + maxHeight, i); + lineHeights += heightOfLine; + } + ctx.restore(); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderTextFill: function (ctx) { + if (!this.fill && !this.styleHas('fill')) { + return; + } + this._renderTextCommon(ctx, 'fillText'); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderTextStroke: function (ctx) { + if ((!this.stroke || this.strokeWidth === 0) && this.isEmptyStyles()) { + return; + } + if (this.shadow && !this.shadow.affectStroke) { + this._removeShadow(ctx); + } + ctx.save(); + this._setLineDash(ctx, this.strokeDashArray); ctx.beginPath(); - ctx.moveTo(this.oldEnd.x, this.oldEnd.y); - } - this.oldEnd = this._drawSegment(ctx, points[length - 2], points[length - 1], true); - ctx.stroke(); - ctx.restore(); - } - } - }, - - /** - * Invoked on mouse up - */ - onMouseUp: function(options) { - if (!this.canvas._isMainEvent(options.e)) { - return true; - } - this.drawStraightLine = false; - this.oldEnd = undefined; - this._finalizeAndAddPath(); - return false; - }, - - /** - * @private - * @param {Object} pointer Actual mouse position related to the canvas. - */ - _prepareForDrawing: function(pointer) { - - var p = new fabric.Point(pointer.x, pointer.y); - - this._reset(); - this._addPoint(p); - this.canvas.contextTop.moveTo(p.x, p.y); - }, - - /** - * @private - * @param {fabric.Point} point Point to be added to points array - */ - _addPoint: function(point) { - if (this._points.length > 1 && point.eq(this._points[this._points.length - 1])) { - return false; - } - if (this.drawStraightLine && this._points.length > 1) { - this._hasStraightLine = true; - this._points.pop(); - } - this._points.push(point); - return true; - }, - - /** - * Clear points array and set contextTop canvas style. - * @private - */ - _reset: function() { - this._points = []; - this._setBrushStyles(this.canvas.contextTop); - this._setShadow(); - this._hasStraightLine = false; - }, - - /** - * @private - * @param {Object} pointer Actual mouse position related to the canvas. - */ - _captureDrawingPath: function(pointer) { - var pointerPoint = new fabric.Point(pointer.x, pointer.y); - return this._addPoint(pointerPoint); - }, - - /** - * Draw a smooth path on the topCanvas using quadraticCurveTo - * @private - * @param {CanvasRenderingContext2D} [ctx] - */ - _render: function(ctx) { - var i, len, - p1 = this._points[0], - p2 = this._points[1]; - ctx = ctx || this.canvas.contextTop; - this._saveAndTransform(ctx); - ctx.beginPath(); - //if we only have 2 points in the path and they are the same - //it means that the user only clicked the canvas without moving the mouse - //then we should be drawing a dot. A path isn't drawn between two identical dots - //that's why we set them apart a bit - if (this._points.length === 2 && p1.x === p2.x && p1.y === p2.y) { - var width = this.width / 1000; - p1 = new fabric.Point(p1.x, p1.y); - p2 = new fabric.Point(p2.x, p2.y); - p1.x -= width; - p2.x += width; - } - ctx.moveTo(p1.x, p1.y); - - for (i = 1, len = this._points.length; i < len; i++) { - // we pick the point between pi + 1 & pi + 2 as the - // end point and p1 as our control point. - this._drawSegment(ctx, p1, p2); - p1 = this._points[i]; - p2 = this._points[i + 1]; - } - // Draw last line as a straight line while - // we wait for the next point to be able to calculate - // the bezier control point - ctx.lineTo(p1.x, p1.y); - ctx.stroke(); - ctx.restore(); - }, - - /** - * Converts points to SVG path - * @param {Array} points Array of points - * @return {(string|number)[][]} SVG path commands - */ - convertPointsToSVGPath: function (points) { - var correction = this.width / 1000; - return fabric.util.getSmoothPathFromPoints(points, correction); - }, - + this._renderTextCommon(ctx, 'strokeText'); + ctx.closePath(); + ctx.restore(); + }, + /** + * @private + * @param {String} method fillText or strokeText. + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Array} line Content of the line, splitted in an array by grapheme + * @param {Number} left + * @param {Number} top + * @param {Number} lineIndex + */ + _renderChars: function (method, ctx, line, left, top, lineIndex) { + // set proper line offset + var lineHeight = this.getHeightOfLine(lineIndex), isJustify = this.textAlign.indexOf('justify') !== -1, actualStyle, nextStyle, charsToRender = '', charBox, boxWidth = 0, timeToRender, path = this.path, shortCut = !isJustify && + this.charSpacing === 0 && + this.isEmptyStyles(lineIndex) && + !path, isLtr = this.direction === 'ltr', sign = this.direction === 'ltr' ? 1 : -1, + // this was changed in the PR #7674 + // currentDirection = ctx.canvas.getAttribute('dir'); + drawingLeft, currentDirection = ctx.direction; + ctx.save(); + if (currentDirection !== this.direction) { + ctx.canvas.setAttribute('dir', isLtr ? 'ltr' : 'rtl'); + ctx.direction = isLtr ? 'ltr' : 'rtl'; + ctx.textAlign = isLtr ? 'left' : 'right'; + } + top -= (lineHeight * this._fontSizeFraction) / this.lineHeight; + if (shortCut) { + // render all the line in one pass without checking + // drawingLeft = isLtr ? left : left - this.getLineWidth(lineIndex); + this._renderChar(method, ctx, lineIndex, 0, line.join(''), left, top, lineHeight); + ctx.restore(); + return; + } + for (var i = 0, len = line.length - 1; i <= len; i++) { + timeToRender = i === len || this.charSpacing || path; + charsToRender += line[i]; + charBox = this.__charBounds[lineIndex][i]; + if (boxWidth === 0) { + left += sign * (charBox.kernedWidth - charBox.width); + boxWidth += charBox.width; + } + else { + boxWidth += charBox.kernedWidth; + } + if (isJustify && !timeToRender) { + if (this._reSpaceAndTab.test(line[i])) { + timeToRender = true; + } + } + if (!timeToRender) { + // if we have charSpacing, we render char by char + actualStyle = + actualStyle || this.getCompleteStyleDeclaration(lineIndex, i); + nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1); + timeToRender = fabric.util.hasStyleChanged(actualStyle, nextStyle, false); + } + if (timeToRender) { + if (path) { + ctx.save(); + ctx.translate(charBox.renderLeft, charBox.renderTop); + ctx.rotate(charBox.angle); + this._renderChar(method, ctx, lineIndex, i, charsToRender, -boxWidth / 2, 0, lineHeight); + ctx.restore(); + } + else { + drawingLeft = left; + this._renderChar(method, ctx, lineIndex, i, charsToRender, drawingLeft, top, lineHeight); + } + charsToRender = ''; + actualStyle = nextStyle; + left += sign * boxWidth; + boxWidth = 0; + } + } + ctx.restore(); + }, + /** + * This function try to patch the missing gradientTransform on canvas gradients. + * transforming a context to transform the gradient, is going to transform the stroke too. + * we want to transform the gradient but not the stroke operation, so we create + * a transformed gradient on a pattern and then we use the pattern instead of the gradient. + * this method has drawbacks: is slow, is in low resolution, needs a patch for when the size + * is limited. + * @private + * @param {fabric.Gradient} filler a fabric gradient instance + * @return {CanvasPattern} a pattern to use as fill/stroke style + */ + _applyPatternGradientTransformText: function (filler) { + var pCanvas = fabric.util.createCanvasElement(), pCtx, + // TODO: verify compatibility with strokeUniform + width = this.width + this.strokeWidth, height = this.height + this.strokeWidth; + pCanvas.width = width; + pCanvas.height = height; + pCtx = pCanvas.getContext('2d'); + pCtx.beginPath(); + pCtx.moveTo(0, 0); + pCtx.lineTo(width, 0); + pCtx.lineTo(width, height); + pCtx.lineTo(0, height); + pCtx.closePath(); + pCtx.translate(width / 2, height / 2); + pCtx.fillStyle = filler.toLive(pCtx); + this._applyPatternGradientTransform(pCtx, filler); + pCtx.fill(); + return pCtx.createPattern(pCanvas, 'no-repeat'); + }, + handleFiller: function (ctx, property, filler) { + var offsetX, offsetY; + if (filler.toLive) { + if (filler.gradientUnits === 'percentage' || + filler.gradientTransform || + filler.patternTransform) { + // need to transform gradient in a pattern. + // this is a slow process. If you are hitting this codepath, and the object + // is not using caching, you should consider switching it on. + // we need a canvas as big as the current object caching canvas. + offsetX = -this.width / 2; + offsetY = -this.height / 2; + ctx.translate(offsetX, offsetY); + ctx[property] = this._applyPatternGradientTransformText(filler); + return { offsetX: offsetX, offsetY: offsetY }; + } + else { + // is a simple gradient or pattern + ctx[property] = filler.toLive(ctx, this); + return this._applyPatternGradientTransform(ctx, filler); + } + } + else { + // is a color + ctx[property] = filler; + } + return { offsetX: 0, offsetY: 0 }; + }, + _setStrokeStyles: function (ctx, decl) { + ctx.lineWidth = decl.strokeWidth; + ctx.lineCap = this.strokeLineCap; + ctx.lineDashOffset = this.strokeDashOffset; + ctx.lineJoin = this.strokeLineJoin; + ctx.miterLimit = this.strokeMiterLimit; + return this.handleFiller(ctx, 'strokeStyle', decl.stroke); + }, + _setFillStyles: function (ctx, decl) { + return this.handleFiller(ctx, 'fillStyle', decl.fill); + }, + /** + * @private + * @param {String} method + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Number} lineIndex + * @param {Number} charIndex + * @param {String} _char + * @param {Number} left Left coordinate + * @param {Number} top Top coordinate + * @param {Number} lineHeight Height of the line + */ + _renderChar: function (method, ctx, lineIndex, charIndex, _char, left, top) { + var decl = this._getStyleDeclaration(lineIndex, charIndex), fullDecl = this.getCompleteStyleDeclaration(lineIndex, charIndex), shouldFill = method === 'fillText' && fullDecl.fill, shouldStroke = method === 'strokeText' && fullDecl.stroke && fullDecl.strokeWidth, fillOffsets, strokeOffsets; + if (!shouldStroke && !shouldFill) { + return; + } + ctx.save(); + shouldFill && (fillOffsets = this._setFillStyles(ctx, fullDecl)); + shouldStroke && (strokeOffsets = this._setStrokeStyles(ctx, fullDecl)); + ctx.font = this._getFontDeclaration(fullDecl); + if (decl && decl.textBackgroundColor) { + this._removeShadow(ctx); + } + if (decl && decl.deltaY) { + top += decl.deltaY; + } + shouldFill && + ctx.fillText(_char, left - fillOffsets.offsetX, top - fillOffsets.offsetY); + shouldStroke && + ctx.strokeText(_char, left - strokeOffsets.offsetX, top - strokeOffsets.offsetY); + ctx.restore(); + }, + /** + * Turns the character into a 'superior figure' (i.e. 'superscript') + * @param {Number} start selection start + * @param {Number} end selection end + * @returns {fabric.Text} thisArg + * @chainable + */ + setSuperscript: function (start, end) { + return this._setScript(start, end, this.superscript); + }, + /** + * Turns the character into an 'inferior figure' (i.e. 'subscript') + * @param {Number} start selection start + * @param {Number} end selection end + * @returns {fabric.Text} thisArg + * @chainable + */ + setSubscript: function (start, end) { + return this._setScript(start, end, this.subscript); + }, + /** + * Applies 'schema' at given position + * @private + * @param {Number} start selection start + * @param {Number} end selection end + * @param {Number} schema + * @returns {fabric.Text} thisArg + * @chainable + */ + _setScript: function (start, end, schema) { + var loc = this.get2DCursorLocation(start, true), fontSize = this.getValueOfPropertyAt(loc.lineIndex, loc.charIndex, 'fontSize'), dy = this.getValueOfPropertyAt(loc.lineIndex, loc.charIndex, 'deltaY'), style = { + fontSize: fontSize * schema.size, + deltaY: dy + fontSize * schema.baseline, + }; + this.setSelectionStyles(style, start, end); + return this; + }, + /** + * @private + * @param {Number} lineIndex index text line + * @return {Number} Line left offset + */ + _getLineLeftOffset: function (lineIndex) { + var lineWidth = this.getLineWidth(lineIndex), lineDiff = this.width - lineWidth, textAlign = this.textAlign, direction = this.direction, isEndOfWrapping, leftOffset = 0, isEndOfWrapping = this.isEndOfWrapping(lineIndex); + if (textAlign === 'justify' || + (textAlign === 'justify-center' && !isEndOfWrapping) || + (textAlign === 'justify-right' && !isEndOfWrapping) || + (textAlign === 'justify-left' && !isEndOfWrapping)) { + return 0; + } + if (textAlign === 'center') { + leftOffset = lineDiff / 2; + } + if (textAlign === 'right') { + leftOffset = lineDiff; + } + if (textAlign === 'justify-center') { + leftOffset = lineDiff / 2; + } + if (textAlign === 'justify-right') { + leftOffset = lineDiff; + } + if (direction === 'rtl') { + if (textAlign === 'right' || + textAlign === 'justify' || + textAlign === 'justify-right') { + leftOffset = 0; + } + else if (textAlign === 'left' || textAlign === 'justify-left') { + leftOffset = -lineDiff; + } + else if (textAlign === 'center' || textAlign === 'justify-center') { + leftOffset = -lineDiff / 2; + } + } + return leftOffset; + }, + /** + * @private + */ + _clearCache: function () { + this.__lineWidths = []; + this.__lineHeights = []; + this.__charBounds = []; + }, + /** + * @private + */ + _shouldClearDimensionCache: function () { + var shouldClear = this._forceClearCache; + shouldClear || + (shouldClear = this.hasStateChanged('_dimensionAffectingProps')); + if (shouldClear) { + this.dirty = true; + this._forceClearCache = false; + } + return shouldClear; + }, + /** + * Measure a single line given its index. Used to calculate the initial + * text bounding box. The values are calculated and stored in __lineWidths cache. + * @private + * @param {Number} lineIndex line number + * @return {Number} Line width + */ + getLineWidth: function (lineIndex) { + if (this.__lineWidths[lineIndex] !== undefined) { + return this.__lineWidths[lineIndex]; + } + var lineInfo = this.measureLine(lineIndex); + var width = lineInfo.width; + this.__lineWidths[lineIndex] = width; + return width; + }, + _getWidthOfCharSpacing: function () { + if (this.charSpacing !== 0) { + return (this.fontSize * this.charSpacing) / 1000; + } + return 0; + }, + /** + * Retrieves the value of property at given character position + * @param {Number} lineIndex the line number + * @param {Number} charIndex the character number + * @param {String} property the property name + * @returns the value of 'property' + */ + getValueOfPropertyAt: function (lineIndex, charIndex, property) { + var charStyle = this._getStyleDeclaration(lineIndex, charIndex); + if (charStyle && typeof charStyle[property] !== 'undefined') { + return charStyle[property]; + } + return this[property]; + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderTextDecoration: function (ctx, type) { + if (!this[type] && !this.styleHas(type)) { + return; + } + var heightOfLine, size, _size, lineLeftOffset, dy, _dy, line, lastDecoration, leftOffset = this._getLeftOffset(), topOffset = this._getTopOffset(), top, boxStart, boxWidth, charBox, currentDecoration, maxHeight, currentFill, lastFill, path = this.path, charSpacing = this._getWidthOfCharSpacing(), offsetY = this.offsets[type]; + for (var i = 0, len = this._textLines.length; i < len; i++) { + heightOfLine = this.getHeightOfLine(i); + if (!this[type] && !this.styleHas(type, i)) { + topOffset += heightOfLine; + continue; + } + line = this._textLines[i]; + maxHeight = heightOfLine / this.lineHeight; + lineLeftOffset = this._getLineLeftOffset(i); + boxStart = 0; + boxWidth = 0; + lastDecoration = this.getValueOfPropertyAt(i, 0, type); + lastFill = this.getValueOfPropertyAt(i, 0, 'fill'); + top = topOffset + maxHeight * (1 - this._fontSizeFraction); + size = this.getHeightOfChar(i, 0); + dy = this.getValueOfPropertyAt(i, 0, 'deltaY'); + for (var j = 0, jlen = line.length; j < jlen; j++) { + charBox = this.__charBounds[i][j]; + currentDecoration = this.getValueOfPropertyAt(i, j, type); + currentFill = this.getValueOfPropertyAt(i, j, 'fill'); + _size = this.getHeightOfChar(i, j); + _dy = this.getValueOfPropertyAt(i, j, 'deltaY'); + if (path && currentDecoration && currentFill) { + ctx.save(); + ctx.fillStyle = lastFill; + ctx.translate(charBox.renderLeft, charBox.renderTop); + ctx.rotate(charBox.angle); + ctx.fillRect(-charBox.kernedWidth / 2, offsetY * _size + _dy, charBox.kernedWidth, this.fontSize / 15); + ctx.restore(); + } + else if ((currentDecoration !== lastDecoration || + currentFill !== lastFill || + _size !== size || + _dy !== dy) && + boxWidth > 0) { + var drawStart = leftOffset + lineLeftOffset + boxStart; + if (this.direction === 'rtl') { + drawStart = this.width - drawStart - boxWidth; + } + if (lastDecoration && lastFill) { + ctx.fillStyle = lastFill; + ctx.fillRect(drawStart, top + offsetY * size + dy, boxWidth, this.fontSize / 15); + } + boxStart = charBox.left; + boxWidth = charBox.width; + lastDecoration = currentDecoration; + lastFill = currentFill; + size = _size; + dy = _dy; + } + else { + boxWidth += charBox.kernedWidth; + } + } + var drawStart = leftOffset + lineLeftOffset + boxStart; + if (this.direction === 'rtl') { + drawStart = this.width - drawStart - boxWidth; + } + ctx.fillStyle = currentFill; + currentDecoration && + currentFill && + ctx.fillRect(drawStart, top + offsetY * size + dy, boxWidth - charSpacing, this.fontSize / 15); + topOffset += heightOfLine; + } + // if there is text background color no + // other shadows should be casted + this._removeShadow(ctx); + }, + /** + * return font declaration string for canvas context + * @param {Object} [styleObject] object + * @returns {String} font declaration formatted for canvas context. + */ + _getFontDeclaration: function (styleObject, forMeasuring) { + var style = styleObject || this, family = this.fontFamily, fontIsGeneric = fabric.Text.genericFonts.indexOf(family.toLowerCase()) > -1; + var fontFamily = family === undefined || + family.indexOf("'") > -1 || + family.indexOf(',') > -1 || + family.indexOf('"') > -1 || + fontIsGeneric + ? style.fontFamily + : '"' + style.fontFamily + '"'; + return [ + // node-canvas needs "weight style", while browsers need "style weight" + // verify if this can be fixed in JSDOM + fabric.isLikelyNode ? style.fontWeight : style.fontStyle, + fabric.isLikelyNode ? style.fontStyle : style.fontWeight, + forMeasuring ? this.CACHE_FONT_SIZE + 'px' : style.fontSize + 'px', + fontFamily, + ].join(' '); + }, + /** + * Renders text instance on a specified context + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + render: function (ctx) { + // do not render if object is not visible + if (!this.visible) { + return; + } + if (this.canvas && + this.canvas.skipOffscreen && + !this.group && + !this.isOnScreen()) { + return; + } + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + } + this.callSuper('render', ctx); + }, + /** + * Override this method to customize grapheme splitting + * @param {string} value + * @returns {string[]} array of graphemes + */ + graphemeSplit: function (value) { + return fabric.util.string.graphemeSplit(value); + }, + /** + * Returns the text as an array of lines. + * @param {String} text text to split + * @returns {Array} Lines in the text + */ + _splitTextIntoLines: function (text) { + var lines = text.split(this._reNewline), newLines = new Array(lines.length), newLine = ['\n'], newText = []; + for (var i = 0; i < lines.length; i++) { + newLines[i] = this.graphemeSplit(lines[i]); + newText = newText.concat(newLines[i], newLine); + } + newText.pop(); + return { + _unwrappedLines: newLines, + lines: lines, + graphemeText: newText, + graphemeLines: newLines, + }; + }, + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toObject: function (propertiesToInclude) { + var allProperties = additionalProps.concat(propertiesToInclude); + var obj = this.callSuper('toObject', allProperties); + obj.styles = fabric.util.stylesToArray(this.styles, this.text); + if (obj.path) { + obj.path = this.path.toObject(); + } + return obj; + }, + /** + * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`. + * @param {String|Object} key Property name or object (if object, iterate over the object properties) + * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one) + * @return {fabric.Object} thisArg + * @chainable + */ + set: function (key, value) { + this.callSuper('set', key, value); + var needsDims = false; + var isAddingPath = false; + if (typeof key === 'object') { + for (var _key in key) { + if (_key === 'path') { + this.setPathInfo(); + } + needsDims = + needsDims || this._dimensionAffectingProps.indexOf(_key) !== -1; + isAddingPath = isAddingPath || _key === 'path'; + } + } + else { + needsDims = this._dimensionAffectingProps.indexOf(key) !== -1; + isAddingPath = key === 'path'; + } + if (isAddingPath) { + this.setPathInfo(); + } + if (needsDims) { + this.initDimensions(); + this.setCoords(); + } + return this; + }, + /** + * Returns complexity of an instance + * @return {Number} complexity + */ + complexity: function () { + return 1; + }, + }); + /* _FROM_SVG_START_ */ /** - * @private - * @param {(string|number)[][]} pathData SVG path commands - * @returns {boolean} + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Text.fromElement}) + * @static + * @memberOf fabric.Text + * @see: http://www.w3.org/TR/SVG/text.html#TextElement */ - _isEmptySVGPath: function (pathData) { - var pathString = fabric.util.joinPath(pathData); - return pathString === 'M 0 0 Q 0 0 0 0 L 0 0'; - }, - - /** - * Creates fabric.Path object to add on canvas - * @param {(string|number)[][]} pathData Path data - * @return {fabric.Path} Path to add on canvas - */ - createPath: function(pathData) { - var path = new fabric.Path(pathData, { - fill: null, - stroke: this.color, - strokeWidth: this.width, - strokeLineCap: this.strokeLineCap, - strokeMiterLimit: this.strokeMiterLimit, - strokeLineJoin: this.strokeLineJoin, - strokeDashArray: this.strokeDashArray, - }); - if (this.shadow) { - this.shadow.affectStroke = true; - path.shadow = new fabric.Shadow(this.shadow); - } - - return path; - }, - + fabric.Text.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x y dx dy font-family font-style font-weight font-size letter-spacing text-decoration text-anchor'.split(' ')); /** - * Decimate points array with the decimate value + * Returns fabric.Text instance from an SVG element (not yet implemented) + * @static + * @memberOf fabric.Text + * @param {SVGElement} element Element to parse + * @param {Function} callback callback function invoked after parsing + * @param {Object} [options] Options object */ - decimatePoints: function(points, distance) { - if (points.length <= 2) { - return points; - } - var zoom = this.canvas.getZoom(), adjustedDistance = Math.pow(distance / zoom, 2), - i, l = points.length - 1, lastPoint = points[0], newPoints = [lastPoint], - cDistance; - for (i = 1; i < l - 1; i++) { - cDistance = Math.pow(lastPoint.x - points[i].x, 2) + Math.pow(lastPoint.y - points[i].y, 2); - if (cDistance >= adjustedDistance) { - lastPoint = points[i]; - newPoints.push(lastPoint); + fabric.Text.fromElement = function (element, callback, options) { + if (!element) { + return callback(null); + } + var parsedAttributes = fabric.parseAttributes(element, fabric.Text.ATTRIBUTE_NAMES), parsedAnchor = parsedAttributes.textAnchor || 'left'; + options = Object.assign({}, options, parsedAttributes); + options.top = options.top || 0; + options.left = options.left || 0; + if (parsedAttributes.textDecoration) { + var textDecoration = parsedAttributes.textDecoration; + if (textDecoration.indexOf('underline') !== -1) { + options.underline = true; + } + if (textDecoration.indexOf('overline') !== -1) { + options.overline = true; + } + if (textDecoration.indexOf('line-through') !== -1) { + options.linethrough = true; + } + delete options.textDecoration; } - } - /** - * Add the last point from the original line to the end of the array. - * This ensures decimate doesn't delete the last point on the line, and ensures the line is > 1 point. - */ - newPoints.push(points[l]); - return newPoints; - }, - + if ('dx' in parsedAttributes) { + options.left += parsedAttributes.dx; + } + if ('dy' in parsedAttributes) { + options.top += parsedAttributes.dy; + } + if (!('fontSize' in options)) { + options.fontSize = DEFAULT_SVG_FONT_SIZE; + } + var textContent = ''; + // The XML is not properly parsed in IE9 so a workaround to get + // textContent is through firstChild.data. Another workaround would be + // to convert XML loaded from a file to be converted using DOMParser (same way loadSVGFromString() does) + if (!('textContent' in element)) { + if ('firstChild' in element && element.firstChild !== null) { + if ('data' in element.firstChild && element.firstChild.data !== null) { + textContent = element.firstChild.data; + } + } + } + else { + textContent = element.textContent; + } + textContent = textContent + .replace(/^\s+|\s+$|\n+/g, '') + .replace(/\s+/g, ' '); + var originalStrokeWidth = options.strokeWidth; + options.strokeWidth = 0; + var text = new fabric.Text(textContent, options), textHeightScaleFactor = text.getScaledHeight() / text.height, lineHeightDiff = (text.height + text.strokeWidth) * text.lineHeight - text.height, scaledDiff = lineHeightDiff * textHeightScaleFactor, textHeight = text.getScaledHeight() + scaledDiff, offX = 0; + /* + Adjust positioning: + x/y attributes in SVG correspond to the bottom-left corner of text bounding box + fabric output by default at top, left. + */ + if (parsedAnchor === 'center') { + offX = text.getScaledWidth() / 2; + } + if (parsedAnchor === 'right') { + offX = text.getScaledWidth(); + } + text.set({ + left: text.left - offX, + top: text.top - + (textHeight - text.fontSize * (0.07 + text._fontSizeFraction)) / + text.lineHeight, + strokeWidth: typeof originalStrokeWidth !== 'undefined' ? originalStrokeWidth : 1, + }); + callback(text); + }; + /* _FROM_SVG_END_ */ /** - * On mouseup after drawing the path on contextTop canvas - * we use the points captured to create an new fabric path object - * and add it to the fabric canvas. - */ - _finalizeAndAddPath: function() { - var ctx = this.canvas.contextTop; - ctx.closePath(); - if (this.decimate) { - this._points = this.decimatePoints(this._points, this.decimate); - } - var pathData = this.convertPointsToSVGPath(this._points); - if (this._isEmptySVGPath(pathData)) { - // do not create 0 width/height paths, as they are - // rendered inconsistently across browsers - // Firefox 4, for example, renders a dot, - // whereas Chrome 10 renders nothing - this.canvas.requestRenderAll(); - return; - } - - var path = this.createPath(pathData); - this.canvas.clearContext(this.canvas.contextTop); - this.canvas.fire('before:path:created', { path: path }); - this.canvas.add(path); - this.canvas.requestRenderAll(); - path.setCoords(); - this._resetShadow(); - - - // fire event 'path' created - this.canvas.fire('path:created', { path: path }); - } - }); -})(); - - -/** - * CircleBrush class - * @class fabric.CircleBrush - */ -fabric.CircleBrush = fabric.util.createClass(fabric.BaseBrush, /** @lends fabric.CircleBrush.prototype */ { - - /** - * Width of a brush - * @type Number - * @default - */ - width: 10, - - /** - * Constructor - * @param {fabric.Canvas} canvas - * @return {fabric.CircleBrush} Instance of a circle brush - */ - initialize: function(canvas) { - this.canvas = canvas; - this.points = []; - }, - - /** - * Invoked inside on mouse down and mouse move - * @param {Object} pointer - */ - drawDot: function(pointer) { - var point = this.addPoint(pointer), - ctx = this.canvas.contextTop; - this._saveAndTransform(ctx); - this.dot(ctx, point); - ctx.restore(); - }, - - dot: function(ctx, point) { - ctx.fillStyle = point.fill; - ctx.beginPath(); - ctx.arc(point.x, point.y, point.radius, 0, Math.PI * 2, false); - ctx.closePath(); - ctx.fill(); - }, - - /** - * Invoked on mouse down - */ - onMouseDown: function(pointer) { - this.points.length = 0; - this.canvas.clearContext(this.canvas.contextTop); - this._setShadow(); - this.drawDot(pointer); - }, - - /** - * Render the full state of the brush - * @private - */ - _render: function() { - var ctx = this.canvas.contextTop, i, len, - points = this.points; - this._saveAndTransform(ctx); - for (i = 0, len = points.length; i < len; i++) { - this.dot(ctx, points[i]); - } - ctx.restore(); - }, - - /** - * Invoked on mouse move - * @param {Object} pointer - */ - onMouseMove: function(pointer) { - if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { - return; - } - if (this.needsFullRender()) { - this.canvas.clearContext(this.canvas.contextTop); - this.addPoint(pointer); - this._render(); - } - else { - this.drawDot(pointer); - } - }, - - /** - * Invoked on mouse up - */ - onMouseUp: function() { - var originalRenderOnAddRemove = this.canvas.renderOnAddRemove, i, len; - this.canvas.renderOnAddRemove = false; - - var circles = []; - - for (i = 0, len = this.points.length; i < len; i++) { - var point = this.points[i], - circle = new fabric.Circle({ - radius: point.radius, - left: point.x, - top: point.y, - originX: 'center', - originY: 'center', - fill: point.fill - }); - - this.shadow && (circle.shadow = new fabric.Shadow(this.shadow)); - - circles.push(circle); - } - var group = new fabric.Group(circles); - group.canvas = this.canvas; - - this.canvas.fire('before:path:created', { path: group }); - this.canvas.add(group); - this.canvas.fire('path:created', { path: group }); - - this.canvas.clearContext(this.canvas.contextTop); - this._resetShadow(); - this.canvas.renderOnAddRemove = originalRenderOnAddRemove; - this.canvas.requestRenderAll(); - }, - - /** - * @param {Object} pointer - * @return {fabric.Point} Just added pointer point - */ - addPoint: function(pointer) { - var pointerPoint = new fabric.Point(pointer.x, pointer.y), - - circleRadius = fabric.util.getRandomInt( - Math.max(0, this.width - 20), this.width + 20) / 2, - - circleColor = new fabric.Color(this.color) - .setAlpha(fabric.util.getRandomInt(0, 100) / 100) - .toRgba(); - - pointerPoint.radius = circleRadius; - pointerPoint.fill = circleColor; - - this.points.push(pointerPoint); - - return pointerPoint; - } -}); - - -/** - * SprayBrush class - * @class fabric.SprayBrush - */ -fabric.SprayBrush = fabric.util.createClass( fabric.BaseBrush, /** @lends fabric.SprayBrush.prototype */ { - - /** - * Width of a spray - * @type Number - * @default - */ - width: 10, - - /** - * Density of a spray (number of dots per chunk) - * @type Number - * @default - */ - density: 20, - - /** - * Width of spray dots - * @type Number - * @default - */ - dotWidth: 1, - - /** - * Width variance of spray dots - * @type Number - * @default - */ - dotWidthVariance: 1, - - /** - * Whether opacity of a dot should be random - * @type Boolean - * @default - */ - randomOpacity: false, - - /** - * Whether overlapping dots (rectangles) should be removed (for performance reasons) - * @type Boolean - * @default - */ - optimizeOverlapping: true, - - /** - * Constructor - * @param {fabric.Canvas} canvas - * @return {fabric.SprayBrush} Instance of a spray brush - */ - initialize: function(canvas) { - this.canvas = canvas; - this.sprayChunks = []; - }, - - /** - * Invoked on mouse down - * @param {Object} pointer - */ - onMouseDown: function(pointer) { - this.sprayChunks.length = 0; - this.canvas.clearContext(this.canvas.contextTop); - this._setShadow(); - - this.addSprayChunk(pointer); - this.render(this.sprayChunkPoints); - }, - - /** - * Invoked on mouse move - * @param {Object} pointer - */ - onMouseMove: function(pointer) { - if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { - return; - } - this.addSprayChunk(pointer); - this.render(this.sprayChunkPoints); - }, - - /** - * Invoked on mouse up - */ - onMouseUp: function() { - var originalRenderOnAddRemove = this.canvas.renderOnAddRemove; - this.canvas.renderOnAddRemove = false; - - var rects = []; - - for (var i = 0, ilen = this.sprayChunks.length; i < ilen; i++) { - var sprayChunk = this.sprayChunks[i]; - - for (var j = 0, jlen = sprayChunk.length; j < jlen; j++) { - - var rect = new fabric.Rect({ - width: sprayChunk[j].width, - height: sprayChunk[j].width, - left: sprayChunk[j].x + 1, - top: sprayChunk[j].y + 1, - originX: 'center', - originY: 'center', - fill: this.color + * Returns fabric.Text instance from an object representation + * @static + * @memberOf fabric.Text + * @param {Object} object plain js Object to create an instance from + * @returns {Promise} + */ + fabric.Text.fromObject = function (object) { + var styles = fabric.util.stylesFromArray(object.styles, object.text); + //copy object to prevent mutation + var objCopy = Object.assign({}, object, { styles: styles }); + return fabric.Object._fromObject(fabric.Text, objCopy, { + extraParam: 'text', }); - rects.push(rect); - } - } - - if (this.optimizeOverlapping) { - rects = this._getOptimizedRects(rects); - } - - var group = new fabric.Group(rects); - this.shadow && group.set('shadow', new fabric.Shadow(this.shadow)); - this.canvas.fire('before:path:created', { path: group }); - this.canvas.add(group); - this.canvas.fire('path:created', { path: group }); - - this.canvas.clearContext(this.canvas.contextTop); - this._resetShadow(); - this.canvas.renderOnAddRemove = originalRenderOnAddRemove; - this.canvas.requestRenderAll(); - }, - - /** - * @private - * @param {Array} rects - */ - _getOptimizedRects: function(rects) { - - // avoid creating duplicate rects at the same coordinates - var uniqueRects = { }, key, i, len; - - for (i = 0, len = rects.length; i < len; i++) { - key = rects[i].left + '' + rects[i].top; - if (!uniqueRects[key]) { - uniqueRects[key] = rects[i]; - } - } - var uniqueRectsArray = []; - for (key in uniqueRects) { - uniqueRectsArray.push(uniqueRects[key]); - } - - return uniqueRectsArray; - }, - - /** - * Render new chunk of spray brush - */ - render: function(sprayChunk) { - var ctx = this.canvas.contextTop, i, len; - ctx.fillStyle = this.color; - - this._saveAndTransform(ctx); - - for (i = 0, len = sprayChunk.length; i < len; i++) { - var point = sprayChunk[i]; - if (typeof point.opacity !== 'undefined') { - ctx.globalAlpha = point.opacity; - } - ctx.fillRect(point.x, point.y, point.width, point.width); - } - ctx.restore(); - }, - - /** - * Render all spray chunks - */ - _render: function() { - var ctx = this.canvas.contextTop, i, ilen; - ctx.fillStyle = this.color; - - this._saveAndTransform(ctx); - - for (i = 0, ilen = this.sprayChunks.length; i < ilen; i++) { - this.render(this.sprayChunks[i]); - } - ctx.restore(); - }, - - /** - * @param {Object} pointer - */ - addSprayChunk: function(pointer) { - this.sprayChunkPoints = []; - - var x, y, width, radius = this.width / 2, i; - - for (i = 0; i < this.density; i++) { - - x = fabric.util.getRandomInt(pointer.x - radius, pointer.x + radius); - y = fabric.util.getRandomInt(pointer.y - radius, pointer.y + radius); - - if (this.dotWidthVariance) { - width = fabric.util.getRandomInt( - // bottom clamp width to 1 - Math.max(1, this.dotWidth - this.dotWidthVariance), - this.dotWidth + this.dotWidthVariance); - } - else { - width = this.dotWidth; - } - - var point = new fabric.Point(x, y); - point.width = width; - - if (this.randomOpacity) { - point.opacity = fabric.util.getRandomInt(0, 100) / 100; - } - - this.sprayChunkPoints.push(point); - } - - this.sprayChunks.push(this.sprayChunkPoints); - } -}); - - -/** - * PatternBrush class - * @class fabric.PatternBrush - * @extends fabric.BaseBrush - */ -fabric.PatternBrush = fabric.util.createClass(fabric.PencilBrush, /** @lends fabric.PatternBrush.prototype */ { - - getPatternSrc: function() { - - var dotWidth = 20, - dotDistance = 5, - patternCanvas = fabric.util.createCanvasElement(), - patternCtx = patternCanvas.getContext('2d'); - - patternCanvas.width = patternCanvas.height = dotWidth + dotDistance; - - patternCtx.fillStyle = this.color; - patternCtx.beginPath(); - patternCtx.arc(dotWidth / 2, dotWidth / 2, dotWidth / 2, 0, Math.PI * 2, false); - patternCtx.closePath(); - patternCtx.fill(); - - return patternCanvas; - }, - - getPatternSrcFunction: function() { - return String(this.getPatternSrc).replace('this.color', '"' + this.color + '"'); - }, - - /** - * Creates "pattern" instance property - * @param {CanvasRenderingContext2D} ctx - */ - getPattern: function(ctx) { - return ctx.createPattern(this.source || this.getPatternSrc(), 'repeat'); - }, - - /** - * Sets brush styles - * @param {CanvasRenderingContext2D} ctx - */ - _setBrushStyles: function(ctx) { - this.callSuper('_setBrushStyles', ctx); - ctx.strokeStyle = this.getPattern(ctx); - }, - - /** - * Creates path - */ - createPath: function(pathData) { - var path = this.callSuper('createPath', pathData), - topLeft = path._getLeftTopCoords().scalarAdd(path.strokeWidth / 2); - - path.stroke = new fabric.Pattern({ - source: this.source || this.getPatternSrcFunction(), - offsetX: -topLeft.x, - offsetY: -topLeft.y - }); - return path; - } -}); - - -(function() { - - var getPointer = fabric.util.getPointer, - degreesToRadians = fabric.util.degreesToRadians, - isTouchEvent = fabric.util.isTouchEvent; - - /** - * Canvas class - * @class fabric.Canvas - * @extends fabric.StaticCanvas - * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#canvas} - * @see {@link fabric.Canvas#initialize} for constructor definition - * - * @fires object:modified at the end of a transform or any change when statefull is true - * @fires object:rotating while an object is being rotated from the control - * @fires object:scaling while an object is being scaled by controls - * @fires object:moving while an object is being dragged - * @fires object:skewing while an object is being skewed from the controls - * - * @fires before:transform before a transform is is started - * @fires before:selection:cleared - * @fires selection:cleared - * @fires selection:updated - * @fires selection:created - * - * @fires path:created after a drawing operation ends and the path is added - * @fires mouse:down - * @fires mouse:move - * @fires mouse:up - * @fires mouse:down:before on mouse down, before the inner fabric logic runs - * @fires mouse:move:before on mouse move, before the inner fabric logic runs - * @fires mouse:up:before on mouse up, before the inner fabric logic runs - * @fires mouse:over - * @fires mouse:out - * @fires mouse:dblclick whenever a native dbl click event fires on the canvas. - * - * @fires dragover - * @fires dragenter - * @fires dragleave - * @fires drop:before before drop event. same native event. This is added to handle edge cases - * @fires drop - * @fires after:render at the end of the render process, receives the context in the callback - * @fires before:render at start the render process, receives the context in the callback - * - */ - fabric.Canvas = fabric.util.createClass(fabric.StaticCanvas, /** @lends fabric.Canvas.prototype */ { - - /** - * Constructor - * @param {HTMLElement | String} el <canvas> element to initialize instance on - * @param {Object} [options] Options object - * @return {Object} thisArg - */ - initialize: function(el, options) { - options || (options = { }); - this.renderAndResetBound = this.renderAndReset.bind(this); - this.requestRenderAllBound = this.requestRenderAll.bind(this); - this._initStatic(el, options); - this._initInteractive(); - this._createCacheCanvas(); - }, - - /** - * When true, objects can be transformed by one side (unproportionally) - * when dragged on the corners that normally would not do that. - * @type Boolean - * @default - * @since fabric 4.0 // changed name and default value - */ - uniformScaling: true, - - /** - * Indicates which key switches uniform scaling. - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * If `null` or 'none' or any other string that is not a modifier key - * feature is disabled. - * totally wrong named. this sounds like `uniform scaling` - * if Canvas.uniformScaling is true, pressing this will set it to false - * and viceversa. - * @since 1.6.2 - * @type String - * @default - */ - uniScaleKey: 'shiftKey', - - /** - * When true, objects use center point as the origin of scale transformation. - * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). - * @since 1.3.4 - * @type Boolean - * @default - */ - centeredScaling: false, - - /** - * When true, objects use center point as the origin of rotate transformation. - * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). - * @since 1.3.4 - * @type Boolean - * @default - */ - centeredRotation: false, - - /** - * Indicates which key enable centered Transform - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * If `null` or 'none' or any other string that is not a modifier key - * feature is disabled feature disabled. - * @since 1.6.2 - * @type String - * @default - */ - centeredKey: 'altKey', - - /** - * Indicates which key enable alternate action on corner - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * If `null` or 'none' or any other string that is not a modifier key - * feature is disabled feature disabled. - * @since 1.6.2 - * @type String - * @default - */ - altActionKey: 'shiftKey', - - /** - * Indicates that canvas is interactive. This property should not be changed. - * @type Boolean - * @default - */ - interactive: true, - - /** - * Indicates whether group selection should be enabled - * @type Boolean - * @default - */ - selection: true, - - /** - * Indicates which key or keys enable multiple click selection - * Pass value as a string or array of strings - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * If `null` or empty or containing any other string that is not a modifier key - * feature is disabled. - * @since 1.6.2 - * @type String|Array - * @default - */ - selectionKey: 'shiftKey', - - /** - * Indicates which key enable alternative selection - * in case of target overlapping with active object - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * For a series of reason that come from the general expectations on how - * things should work, this feature works only for preserveObjectStacking true. - * If `null` or 'none' or any other string that is not a modifier key - * feature is disabled. - * @since 1.6.5 - * @type null|String - * @default - */ - altSelectionKey: null, - - /** - * Color of selection - * @type String - * @default - */ - selectionColor: 'rgba(100, 100, 255, 0.3)', // blue - - /** - * Default dash array pattern - * If not empty the selection border is dashed - * @type Array - */ - selectionDashArray: [], - - /** - * Color of the border of selection (usually slightly darker than color of selection itself) - * @type String - * @default - */ - selectionBorderColor: 'rgba(255, 255, 255, 0.3)', - - /** - * Width of a line used in object/group selection - * @type Number - * @default - */ - selectionLineWidth: 1, - - /** - * Select only shapes that are fully contained in the dragged selection rectangle. - * @type Boolean - * @default - */ - selectionFullyContained: false, - - /** - * Default cursor value used when hovering over an object on canvas - * @type String - * @default - */ - hoverCursor: 'move', - - /** - * Default cursor value used when moving an object on canvas - * @type String - * @default - */ - moveCursor: 'move', - - /** - * Default cursor value used for the entire canvas - * @type String - * @default - */ - defaultCursor: 'default', - - /** - * Cursor value used during free drawing - * @type String - * @default - */ - freeDrawingCursor: 'crosshair', - - /** - * Cursor value used for disabled elements ( corners with disabled action ) - * @type String - * @since 2.0.0 - * @default - */ - notAllowedCursor: 'not-allowed', - - /** - * Default element class that's given to wrapper (div) element of canvas - * @type String - * @default - */ - containerClass: 'canvas-container', - - /** - * When true, object detection happens on per-pixel basis rather than on per-bounding-box - * @type Boolean - * @default - */ - perPixelTargetFind: false, - - /** - * Number of pixels around target pixel to tolerate (consider active) during object detection - * @type Number - * @default - */ - targetFindTolerance: 0, - - /** - * When true, target detection is skipped. Target detection will return always undefined. - * click selection won't work anymore, events will fire with no targets. - * if something is selected before setting it to true, it will be deselected at the first click. - * area selection will still work. check the `selection` property too. - * if you deactivate both, you should look into staticCanvas. - * @type Boolean - * @default - */ - skipTargetFind: false, - - /** - * When true, mouse events on canvas (mousedown/mousemove/mouseup) result in free drawing. - * After mousedown, mousemove creates a shape, - * and then mouseup finalizes it and adds an instance of `fabric.Path` onto canvas. - * @tutorial {@link http://fabricjs.com/fabric-intro-part-4#free_drawing} - * @type Boolean - * @default - */ - isDrawingMode: false, - - /** - * Indicates whether objects should remain in current stack position when selected. - * When false objects are brought to top and rendered as part of the selection group - * @type Boolean - * @default - */ - preserveObjectStacking: false, - - /** - * Indicates the angle that an object will lock to while rotating. - * @type Number - * @since 1.6.7 - * @default - */ - snapAngle: 0, - - /** - * Indicates the distance from the snapAngle the rotation will lock to the snapAngle. - * When `null`, the snapThreshold will default to the snapAngle. - * @type null|Number - * @since 1.6.7 - * @default - */ - snapThreshold: null, - - /** - * Indicates if the right click on canvas can output the context menu or not - * @type Boolean - * @since 1.6.5 - * @default - */ - stopContextMenu: false, + }; + fabric.Text.genericFonts = [ + 'sans-serif', + 'serif', + 'cursive', + 'fantasy', + 'monospace', + ]; + fabric.util.createAccessors && fabric.util.createAccessors(fabric.Text); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.Text.prototype, + /** @lends fabric.Text.prototype */ { + /** + * Returns true if object has no styling or no styling in a line + * @param {Number} lineIndex , lineIndex is on wrapped lines. + * @return {Boolean} + */ + isEmptyStyles: function (lineIndex) { + if (!this.styles) { + return true; + } + if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) { + return true; + } + var obj = typeof lineIndex === 'undefined' + ? this.styles + : { line: this.styles[lineIndex] }; + for (var p1 in obj) { + for (var p2 in obj[p1]) { + // eslint-disable-next-line no-unused-vars + for (var p3 in obj[p1][p2]) { + return false; + } + } + } + return true; + }, + /** + * Returns true if object has a style property or has it ina specified line + * This function is used to detect if a text will use a particular property or not. + * @param {String} property to check for + * @param {Number} lineIndex to check the style on + * @return {Boolean} + */ + styleHas: function (property, lineIndex) { + if (!this.styles || !property || property === '') { + return false; + } + if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) { + return false; + } + var obj = typeof lineIndex === 'undefined' + ? this.styles + : { 0: this.styles[lineIndex] }; + // eslint-disable-next-line + for (var p1 in obj) { + // eslint-disable-next-line + for (var p2 in obj[p1]) { + if (typeof obj[p1][p2][property] !== 'undefined') { + return true; + } + } + } + return false; + }, + /** + * Check if characters in a text have a value for a property + * whose value matches the textbox's value for that property. If so, + * the character-level property is deleted. If the character + * has no other properties, then it is also deleted. Finally, + * if the line containing that character has no other characters + * then it also is deleted. + * + * @param {string} property The property to compare between characters and text. + */ + cleanStyle: function (property) { + if (!this.styles || !property || property === '') { + return false; + } + var obj = this.styles, stylesCount = 0, letterCount, stylePropertyValue, allStyleObjectPropertiesMatch = true, graphemeCount = 0, styleObject; + // eslint-disable-next-line + for (var p1 in obj) { + letterCount = 0; + // eslint-disable-next-line + for (var p2 in obj[p1]) { + var styleObject = obj[p1][p2], stylePropertyHasBeenSet = styleObject.hasOwnProperty(property); + stylesCount++; + if (stylePropertyHasBeenSet) { + if (!stylePropertyValue) { + stylePropertyValue = styleObject[property]; + } + else if (styleObject[property] !== stylePropertyValue) { + allStyleObjectPropertiesMatch = false; + } + if (styleObject[property] === this[property]) { + delete styleObject[property]; + } + } + else { + allStyleObjectPropertiesMatch = false; + } + if (Object.keys(styleObject).length !== 0) { + letterCount++; + } + else { + delete obj[p1][p2]; + } + } + if (letterCount === 0) { + delete obj[p1]; + } + } + // if every grapheme has the same style set then + // delete those styles and set it on the parent + for (var i = 0; i < this._textLines.length; i++) { + graphemeCount += this._textLines[i].length; + } + if (allStyleObjectPropertiesMatch && stylesCount === graphemeCount) { + this[property] = stylePropertyValue; + this.removeStyle(property); + } + }, + /** + * Remove a style property or properties from all individual character styles + * in a text object. Deletes the character style object if it contains no other style + * props. Deletes a line style object if it contains no other character styles. + * + * @param {String} props The property to remove from character styles. + */ + removeStyle: function (property) { + if (!this.styles || !property || property === '') { + return; + } + var obj = this.styles, line, lineNum, charNum; + for (lineNum in obj) { + line = obj[lineNum]; + for (charNum in line) { + delete line[charNum][property]; + if (Object.keys(line[charNum]).length === 0) { + delete line[charNum]; + } + } + if (Object.keys(line).length === 0) { + delete obj[lineNum]; + } + } + }, + /** + * @private + */ + _extendStyles: function (index, styles) { + var loc = this.get2DCursorLocation(index); + if (!this._getLineStyle(loc.lineIndex)) { + this._setLineStyle(loc.lineIndex); + } + if (!this._getStyleDeclaration(loc.lineIndex, loc.charIndex)) { + this._setStyleDeclaration(loc.lineIndex, loc.charIndex, {}); + } + fabric.util.object.extend(this._getStyleDeclaration(loc.lineIndex, loc.charIndex), styles); + }, + /** + * Returns 2d representation (lineIndex and charIndex) of cursor (or selection start) + * @param {Number} [selectionStart] Optional index. When not given, current selectionStart is used. + * @param {Boolean} [skipWrapping] consider the location for unwrapped lines. useful to manage styles. + */ + get2DCursorLocation: function (selectionStart, skipWrapping) { + if (typeof selectionStart === 'undefined') { + selectionStart = this.selectionStart; + } + var lines = skipWrapping ? this._unwrappedTextLines : this._textLines, len = lines.length; + for (var i = 0; i < len; i++) { + if (selectionStart <= lines[i].length) { + return { + lineIndex: i, + charIndex: selectionStart, + }; + } + selectionStart -= lines[i].length + this.missingNewlineOffset(i); + } + return { + lineIndex: i - 1, + charIndex: lines[i - 1].length < selectionStart + ? lines[i - 1].length + : selectionStart, + }; + }, + /** + * Gets style of a current selection/cursor (at the start position) + * if startIndex or endIndex are not provided, selectionStart or selectionEnd will be used. + * @param {Number} [startIndex] Start index to get styles at + * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1 + * @param {Boolean} [complete] get full style or not + * @return {Array} styles an array with one, zero or more Style objects + */ + getSelectionStyles: function (startIndex, endIndex, complete) { + if (typeof startIndex === 'undefined') { + startIndex = this.selectionStart || 0; + } + if (typeof endIndex === 'undefined') { + endIndex = this.selectionEnd || startIndex; + } + var styles = []; + for (var i = startIndex; i < endIndex; i++) { + styles.push(this.getStyleAtPosition(i, complete)); + } + return styles; + }, + /** + * Gets style of a current selection/cursor position + * @param {Number} position to get styles at + * @param {Boolean} [complete] full style if true + * @return {Object} style Style object at a specified index + * @private + */ + getStyleAtPosition: function (position, complete) { + var loc = this.get2DCursorLocation(position), style = complete + ? this.getCompleteStyleDeclaration(loc.lineIndex, loc.charIndex) + : this._getStyleDeclaration(loc.lineIndex, loc.charIndex); + return style || {}; + }, + /** + * Sets style of a current selection, if no selection exist, do not set anything. + * @param {Object} [styles] Styles object + * @param {Number} [startIndex] Start index to get styles at + * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1 + * @return {fabric.IText} thisArg + * @chainable + */ + setSelectionStyles: function (styles, startIndex, endIndex) { + if (typeof startIndex === 'undefined') { + startIndex = this.selectionStart || 0; + } + if (typeof endIndex === 'undefined') { + endIndex = this.selectionEnd || startIndex; + } + for (var i = startIndex; i < endIndex; i++) { + this._extendStyles(i, styles); + } + /* not included in _extendStyles to avoid clearing cache more than once */ + this._forceClearCache = true; + return this; + }, + /** + * get the reference, not a clone, of the style object for a given character + * @param {Number} lineIndex + * @param {Number} charIndex + * @return {Object} style object + */ + _getStyleDeclaration: function (lineIndex, charIndex) { + var lineStyle = this.styles && this.styles[lineIndex]; + if (!lineStyle) { + return null; + } + return lineStyle[charIndex]; + }, + /** + * return a new object that contains all the style property for a character + * the object returned is newly created + * @param {Number} lineIndex of the line where the character is + * @param {Number} charIndex position of the character on the line + * @return {Object} style object + */ + getCompleteStyleDeclaration: function (lineIndex, charIndex) { + var style = this._getStyleDeclaration(lineIndex, charIndex) || {}, styleObject = {}, prop; + for (var i = 0; i < this._styleProperties.length; i++) { + prop = this._styleProperties[i]; + styleObject[prop] = + typeof style[prop] === 'undefined' ? this[prop] : style[prop]; + } + return styleObject; + }, + /** + * @param {Number} lineIndex + * @param {Number} charIndex + * @param {Object} style + * @private + */ + _setStyleDeclaration: function (lineIndex, charIndex, style) { + this.styles[lineIndex][charIndex] = style; + }, + /** + * + * @param {Number} lineIndex + * @param {Number} charIndex + * @private + */ + _deleteStyleDeclaration: function (lineIndex, charIndex) { + delete this.styles[lineIndex][charIndex]; + }, + /** + * @param {Number} lineIndex + * @return {Boolean} if the line exists or not + * @private + */ + _getLineStyle: function (lineIndex) { + return !!this.styles[lineIndex]; + }, + /** + * Set the line style to an empty object so that is initialized + * @param {Number} lineIndex + * @private + */ + _setLineStyle: function (lineIndex) { + this.styles[lineIndex] = {}; + }, + /** + * @param {Number} lineIndex + * @private + */ + _deleteLineStyle: function (lineIndex) { + delete this.styles[lineIndex]; + }, + }); +})(typeof exports !== 'undefined' ? exports : window); +//@ts-nocheck +(function (global) { + var fabric = global.fabric; /** - * Indicates if the canvas can fire right click events - * @type Boolean - * @since 1.6.5 - * @default - */ - fireRightClick: false, - - /** - * Indicates if the canvas can fire middle click events - * @type Boolean - * @since 1.7.8 - * @default - */ - fireMiddleClick: false, - - /** - * Keep track of the subTargets for Mouse Events - * @type fabric.Object[] - */ - targets: [], - - /** - * When the option is enabled, PointerEvent is used instead of MouseEvent. - * @type Boolean - * @default - */ - enablePointerEvents: false, - - /** - * Keep track of the hovered target - * @type fabric.Object - * @private - */ - _hoveredTarget: null, - - /** - * hold the list of nested targets hovered - * @type fabric.Object[] - * @private - */ - _hoveredTargets: [], - - /** - * @private - */ - _initInteractive: function() { - this._currentTransform = null; - this._groupSelector = null; - this._initWrapperElement(); - this._createUpperCanvas(); - this._initEventListeners(); - - this._initRetinaScaling(); - - this.freeDrawingBrush = fabric.PencilBrush && new fabric.PencilBrush(this); - - this.calcOffset(); - }, - - /** - * Divides objects in two groups, one to render immediately - * and one to render as activeGroup. - * @return {Array} objects to render immediately and pushes the other in the activeGroup. - */ - _chooseObjectsToRender: function() { - var activeObjects = this.getActiveObjects(), - object, objsToRender, activeGroupObjects; - - if (activeObjects.length > 0 && !this.preserveObjectStacking) { - objsToRender = []; - activeGroupObjects = []; - for (var i = 0, length = this._objects.length; i < length; i++) { - object = this._objects[i]; - if (activeObjects.indexOf(object) === -1 ) { - objsToRender.push(object); - } - else { - activeGroupObjects.push(object); - } - } - if (activeObjects.length > 1) { - this._activeObject._objects = activeGroupObjects; - } - objsToRender.push.apply(objsToRender, activeGroupObjects); - } - else { - objsToRender = this._objects; - } - return objsToRender; - }, - + * IText class (introduced in v1.4) Events are also fired with "text:" + * prefix when observing canvas. + * @class fabric.IText + * @extends fabric.Text + * @mixes fabric.Observable + * + * @fires changed + * @fires selection:changed + * @fires editing:entered + * @fires editing:exited + * @fires dragstart + * @fires drag drag event firing on the drag source + * @fires dragend + * @fires copy + * @fires cut + * @fires paste + * + * @return {fabric.IText} thisArg + * @see {@link fabric.IText#initialize} for constructor definition + * + *

Supported key combinations:

+ * 
+     *   Move cursor:                    left, right, up, down
+     *   Select character:               shift + left, shift + right
+     *   Select text vertically:         shift + up, shift + down
+     *   Move cursor by word:            alt + left, alt + right
+     *   Select words:                   shift + alt + left, shift + alt + right
+     *   Move cursor to line start/end:  cmd + left, cmd + right or home, end
+     *   Select till start/end of line:  cmd + shift + left, cmd + shift + right or shift + home, shift + end
+     *   Jump to start/end of text:      cmd + up, cmd + down
+     *   Select till start/end of text:  cmd + shift + up, cmd + shift + down or shift + pgUp, shift + pgDown
+     *   Delete character:               backspace
+     *   Delete word:                    alt + backspace
+     *   Delete line:                    cmd + backspace
+     *   Forward delete:                 delete
+     *   Copy text:                      ctrl/cmd + c
+     *   Paste text:                     ctrl/cmd + v
+     *   Cut text:                       ctrl/cmd + x
+     *   Select entire text:             ctrl/cmd + a
+     *   Quit editing                    tab or esc
+     *
+ * + *

Supported mouse/touch combination

+ * 
+     *   Position cursor:                click/touch
+     *   Create selection:               click/touch & drag
+     *   Create selection:               click & shift + click
+     *   Select word:                    double click
+     *   Select line:                    triple click
+     *
+ */ + fabric.IText = fabric.util.createClass(fabric.Text, fabric.Observable, + /** @lends fabric.IText.prototype */ { + /** + * Type of an object + * @type String + * @default + */ + type: 'i-text', + /** + * Index where text selection starts (or where cursor is when there is no selection) + * @type Number + * @default + */ + selectionStart: 0, + /** + * Index where text selection ends + * @type Number + * @default + */ + selectionEnd: 0, + /** + * Color of text selection + * @type String + * @default + */ + selectionColor: 'rgba(17,119,255,0.3)', + /** + * Indicates whether text is in editing mode + * @type Boolean + * @default + */ + isEditing: false, + /** + * Indicates whether a text can be edited + * @type Boolean + * @default + */ + editable: true, + /** + * Border color of text object while it's in editing mode + * @type String + * @default + */ + editingBorderColor: 'rgba(102,153,255,0.25)', + /** + * Width of cursor (in px) + * @type Number + * @default + */ + cursorWidth: 2, + /** + * Color of text cursor color in editing mode. + * if not set (default) will take color from the text. + * if set to a color value that fabric can understand, it will + * be used instead of the color of the text at the current position. + * @type String + * @default + */ + cursorColor: '', + /** + * Delay between cursor blink (in ms) + * @type Number + * @default + */ + cursorDelay: 1000, + /** + * Duration of cursor fadein (in ms) + * @type Number + * @default + */ + cursorDuration: 600, + /** + * Indicates whether internal text char widths can be cached + * @type Boolean + * @default + */ + caching: true, + /** + * DOM container to append the hiddenTextarea. + * An alternative to attaching to the document.body. + * Useful to reduce laggish redraw of the full document.body tree and + * also with modals event capturing that won't let the textarea take focus. + * @type HTMLElement + * @default + */ + hiddenTextareaContainer: null, + /** + * @private + */ + _reSpace: /\s|\n/, + /** + * @private + */ + _currentCursorOpacity: 1, + /** + * @private + */ + _selectionDirection: null, + /** + * Helps determining when the text is in composition, so that the cursor + * rendering is altered. + */ + inCompositionMode: false, + /** + * Constructor + * @param {String} text Text string + * @param {Object} [options] Options object + * @return {fabric.IText} thisArg + */ + initialize: function (text, options) { + this.callSuper('initialize', text, options); + this.initBehavior(); + }, + /** + * While editing handle differently + * @private + * @param {string} key + * @param {*} value + */ + _set: function (key, value) { + if (this.isEditing && this._savedProps && key in this._savedProps) { + this._savedProps[key] = value; + } + else { + this.callSuper('_set', key, value); + } + }, + /** + * Sets selection start (left boundary of a selection) + * @param {Number} index Index to set selection start to + */ + setSelectionStart: function (index) { + index = Math.max(index, 0); + this._updateAndFire('selectionStart', index); + }, + /** + * Sets selection end (right boundary of a selection) + * @param {Number} index Index to set selection end to + */ + setSelectionEnd: function (index) { + index = Math.min(index, this.text.length); + this._updateAndFire('selectionEnd', index); + }, + /** + * @private + * @param {String} property 'selectionStart' or 'selectionEnd' + * @param {Number} index new position of property + */ + _updateAndFire: function (property, index) { + if (this[property] !== index) { + this._fireSelectionChanged(); + this[property] = index; + } + this._updateTextarea(); + }, + /** + * Fires the even of selection changed + * @private + */ + _fireSelectionChanged: function () { + this.fire('selection:changed'); + this.canvas && + this.canvas.fire('text:selection:changed', { target: this }); + }, + /** + * Initialize text dimensions. Render all text on given context + * or on a offscreen canvas to get the text width with measureText. + * Updates this.width and this.height with the proper values. + * Does not return dimensions. + * @private + */ + initDimensions: function () { + this.isEditing && this.initDelayedCursor(); + this.clearContextTop(); + this.callSuper('initDimensions'); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + render: function (ctx) { + this.clearContextTop(); + this.callSuper('render', ctx); + // clear the cursorOffsetCache, so we ensure to calculate once per renderCursor + // the correct position but not at every cursor animation. + this.cursorOffsetCache = {}; + this.renderCursorOrSelection(); + }, + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function (ctx) { + this.callSuper('_render', ctx); + }, + /** + * Renders cursor or selection (depending on what exists) + * it does on the contextTop. If contextTop is not available, do nothing. + */ + renderCursorOrSelection: function () { + if (!this.isEditing) { + return; + } + var ctx = this.clearContextTop(true); + if (!ctx) { + return; + } + var boundaries = this._getCursorBoundaries(); + if (this.selectionStart === this.selectionEnd) { + this.renderCursor(ctx, boundaries); + } + else { + this.renderSelection(ctx, boundaries); + } + ctx.restore(); + }, + /** + * Renders cursor on context Top, outside the animation cycle, on request + * Used for the drag/drop effect. + * If contextTop is not available, do nothing. + */ + renderCursorAt: function (selectionStart) { + var boundaries = this._getCursorBoundaries(selectionStart, true); + this._renderCursor(this.canvas.contextTop, boundaries, selectionStart); + }, + /** + * Returns cursor boundaries (left, top, leftOffset, topOffset) + * left/top are left/top of entire text box + * leftOffset/topOffset are offset from that left/top point of a text box + * @private + * @param {number} [index] index from start + * @param {boolean} [skipCaching] + */ + _getCursorBoundaries: function (index, skipCaching) { + if (typeof index === 'undefined') { + index = this.selectionStart; + } + var left = this._getLeftOffset(), top = this._getTopOffset(), offsets = this._getCursorBoundariesOffsets(index, skipCaching); + return { + left: left, + top: top, + leftOffset: offsets.left, + topOffset: offsets.top, + }; + }, + /** + * Caches and returns cursor left/top offset relative to instance's center point + * @private + * @param {number} index index from start + * @param {boolean} [skipCaching] + */ + _getCursorBoundariesOffsets: function (index, skipCaching) { + if (skipCaching) { + return this.__getCursorBoundariesOffsets(index); + } + if (this.cursorOffsetCache && 'top' in this.cursorOffsetCache) { + return this.cursorOffsetCache; + } + return (this.cursorOffsetCache = + this.__getCursorBoundariesOffsets(index)); + }, + /** + * Calcualtes cursor left/top offset relative to instance's center point + * @private + * @param {number} index index from start + */ + __getCursorBoundariesOffsets: function (index) { + var lineLeftOffset, lineIndex, charIndex, topOffset = 0, leftOffset = 0, boundaries, cursorPosition = this.get2DCursorLocation(index); + charIndex = cursorPosition.charIndex; + lineIndex = cursorPosition.lineIndex; + for (var i = 0; i < lineIndex; i++) { + topOffset += this.getHeightOfLine(i); + } + lineLeftOffset = this._getLineLeftOffset(lineIndex); + var bound = this.__charBounds[lineIndex][charIndex]; + bound && (leftOffset = bound.left); + if (this.charSpacing !== 0 && + charIndex === this._textLines[lineIndex].length) { + leftOffset -= this._getWidthOfCharSpacing(); + } + boundaries = { + top: topOffset, + left: lineLeftOffset + (leftOffset > 0 ? leftOffset : 0), + }; + if (this.direction === 'rtl') { + if (this.textAlign === 'right' || + this.textAlign === 'justify' || + this.textAlign === 'justify-right') { + boundaries.left *= -1; + } + else if (this.textAlign === 'left' || + this.textAlign === 'justify-left') { + boundaries.left = + lineLeftOffset - (leftOffset > 0 ? leftOffset : 0); + } + else if (this.textAlign === 'center' || + this.textAlign === 'justify-center') { + boundaries.left = + lineLeftOffset - (leftOffset > 0 ? leftOffset : 0); + } + } + return boundaries; + }, + /** + * Renders cursor + * @param {Object} boundaries + * @param {CanvasRenderingContext2D} ctx transformed context to draw on + */ + renderCursor: function (ctx, boundaries) { + this._renderCursor(ctx, boundaries, this.selectionStart); + }, + _renderCursor: function (ctx, boundaries, selectionStart) { + var cursorLocation = this.get2DCursorLocation(selectionStart), lineIndex = cursorLocation.lineIndex, charIndex = cursorLocation.charIndex > 0 ? cursorLocation.charIndex - 1 : 0, charHeight = this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize'), multiplier = this.scaleX * this.canvas.getZoom(), cursorWidth = this.cursorWidth / multiplier, topOffset = boundaries.topOffset, dy = this.getValueOfPropertyAt(lineIndex, charIndex, 'deltaY'); + topOffset += + ((1 - this._fontSizeFraction) * this.getHeightOfLine(lineIndex)) / + this.lineHeight - + charHeight * (1 - this._fontSizeFraction); + if (this.inCompositionMode) { + // TODO: investigate why there isn't a return inside the if, + // and why can't happe top of the function + this.renderSelection(ctx, boundaries); + } + ctx.fillStyle = + this.cursorColor || + this.getValueOfPropertyAt(lineIndex, charIndex, 'fill'); + ctx.globalAlpha = this.__isMousedown ? 1 : this._currentCursorOpacity; + ctx.fillRect(boundaries.left + boundaries.leftOffset - cursorWidth / 2, topOffset + boundaries.top + dy, cursorWidth, charHeight); + }, + /** + * Renders text selection + * @param {Object} boundaries Object with left/top/leftOffset/topOffset + * @param {CanvasRenderingContext2D} ctx transformed context to draw on + */ + renderSelection: function (ctx, boundaries) { + var selection = { + selectionStart: this.inCompositionMode + ? this.hiddenTextarea.selectionStart + : this.selectionStart, + selectionEnd: this.inCompositionMode + ? this.hiddenTextarea.selectionEnd + : this.selectionEnd, + }; + this._renderSelection(ctx, selection, boundaries); + }, + /** + * Renders drag start text selection + */ + renderDragSourceEffect: function () { + if (this.__isDragging && + this.__dragStartSelection && + this.__dragStartSelection) { + this._renderSelection(this.canvas.contextTop, this.__dragStartSelection, this._getCursorBoundaries(this.__dragStartSelection.selectionStart, true)); + } + }, + renderDropTargetEffect: function (e) { + var dragSelection = this.getSelectionStartFromPointer(e); + this.renderCursorAt(dragSelection); + }, + /** + * Renders text selection + * @private + * @param {{ selectionStart: number, selectionEnd: number }} selection + * @param {Object} boundaries Object with left/top/leftOffset/topOffset + * @param {CanvasRenderingContext2D} ctx transformed context to draw on + */ + _renderSelection: function (ctx, selection, boundaries) { + var selectionStart = selection.selectionStart, selectionEnd = selection.selectionEnd, isJustify = this.textAlign.indexOf('justify') !== -1, start = this.get2DCursorLocation(selectionStart), end = this.get2DCursorLocation(selectionEnd), startLine = start.lineIndex, endLine = end.lineIndex, startChar = start.charIndex < 0 ? 0 : start.charIndex, endChar = end.charIndex < 0 ? 0 : end.charIndex; + for (var i = startLine; i <= endLine; i++) { + var lineOffset = this._getLineLeftOffset(i) || 0, lineHeight = this.getHeightOfLine(i), realLineHeight = 0, boxStart = 0, boxEnd = 0; + if (i === startLine) { + boxStart = this.__charBounds[startLine][startChar].left; + } + if (i >= startLine && i < endLine) { + boxEnd = + isJustify && !this.isEndOfWrapping(i) + ? this.width + : this.getLineWidth(i) || 5; // WTF is this 5? + } + else if (i === endLine) { + if (endChar === 0) { + boxEnd = this.__charBounds[endLine][endChar].left; + } + else { + var charSpacing = this._getWidthOfCharSpacing(); + boxEnd = + this.__charBounds[endLine][endChar - 1].left + + this.__charBounds[endLine][endChar - 1].width - + charSpacing; + } + } + realLineHeight = lineHeight; + if (this.lineHeight < 1 || (i === endLine && this.lineHeight > 1)) { + lineHeight /= this.lineHeight; + } + var drawStart = boundaries.left + lineOffset + boxStart, drawWidth = boxEnd - boxStart, drawHeight = lineHeight, extraTop = 0; + if (this.inCompositionMode) { + ctx.fillStyle = this.compositionColor || 'black'; + drawHeight = 1; + extraTop = lineHeight; + } + else { + ctx.fillStyle = this.selectionColor; + } + if (this.direction === 'rtl') { + if (this.textAlign === 'right' || + this.textAlign === 'justify' || + this.textAlign === 'justify-right') { + drawStart = this.width - drawStart - drawWidth; + } + else if (this.textAlign === 'left' || + this.textAlign === 'justify-left') { + drawStart = boundaries.left + lineOffset - boxEnd; + } + else if (this.textAlign === 'center' || + this.textAlign === 'justify-center') { + drawStart = boundaries.left + lineOffset - boxEnd; + } + } + ctx.fillRect(drawStart, boundaries.top + boundaries.topOffset + extraTop, drawWidth, drawHeight); + boundaries.topOffset += realLineHeight; + } + }, + /** + * High level function to know the height of the cursor. + * the currentChar is the one that precedes the cursor + * Returns fontSize of char at the current cursor + * Unused from the library, is for the end user + * @return {Number} Character font size + */ + getCurrentCharFontSize: function () { + var cp = this._getCurrentCharIndex(); + return this.getValueOfPropertyAt(cp.l, cp.c, 'fontSize'); + }, + /** + * High level function to know the color of the cursor. + * the currentChar is the one that precedes the cursor + * Returns color (fill) of char at the current cursor + * if the text object has a pattern or gradient for filler, it will return that. + * Unused by the library, is for the end user + * @return {String | fabric.Gradient | fabric.Pattern} Character color (fill) + */ + getCurrentCharColor: function () { + var cp = this._getCurrentCharIndex(); + return this.getValueOfPropertyAt(cp.l, cp.c, 'fill'); + }, + /** + * Returns the cursor position for the getCurrent.. functions + * @private + */ + _getCurrentCharIndex: function () { + var cursorPosition = this.get2DCursorLocation(this.selectionStart, true), charIndex = cursorPosition.charIndex > 0 ? cursorPosition.charIndex - 1 : 0; + return { l: cursorPosition.lineIndex, c: charIndex }; + }, + }); /** - * Renders both the top canvas and the secondary container canvas. - * @return {fabric.Canvas} instance - * @chainable - */ - renderAll: function () { - if (this.contextTopDirty && !this._groupSelector && !this.isDrawingMode) { - this.clearContext(this.contextTop); - this.contextTopDirty = false; - } - if (this.hasLostContext) { - this.renderTopLayer(this.contextTop); - this.hasLostContext = false; - } - var canvasToDrawOn = this.contextContainer; - this.renderCanvas(canvasToDrawOn, this._chooseObjectsToRender()); - return this; - }, - - renderTopLayer: function(ctx) { - ctx.save(); - if (this.isDrawingMode && this._isCurrentlyDrawing) { - this.freeDrawingBrush && this.freeDrawingBrush._render(); - this.contextTopDirty = true; - } - // we render the top context - last object - if (this.selection && this._groupSelector) { - this._drawSelection(ctx); - this.contextTopDirty = true; - } - ctx.restore(); - }, - - /** - * Method to render only the top canvas. - * Also used to render the group selection box. - * @return {fabric.Canvas} thisArg - * @chainable - */ - renderTop: function () { - var ctx = this.contextTop; - this.clearContext(ctx); - this.renderTopLayer(ctx); - this.fire('after:render'); - return this; - }, - - /** - * @private - */ - _normalizePointer: function (object, pointer) { - var m = object.calcTransformMatrix(), - invertedM = fabric.util.invertTransform(m), - vptPointer = this.restorePointerVpt(pointer); - return fabric.util.transformPoint(vptPointer, invertedM); - }, - - /** - * Returns true if object is transparent at a certain location - * @param {fabric.Object} target Object to check - * @param {Number} x Left coordinate - * @param {Number} y Top coordinate - * @return {Boolean} - */ - isTargetTransparent: function (target, x, y) { - // in case the target is the activeObject, we cannot execute this optimization - // because we need to draw controls too. - if (target.shouldCache() && target._cacheCanvas && target !== this._activeObject) { - var normalizedPointer = this._normalizePointer(target, {x: x, y: y}), - targetRelativeX = Math.max(target.cacheTranslationX + (normalizedPointer.x * target.zoomX), 0), - targetRelativeY = Math.max(target.cacheTranslationY + (normalizedPointer.y * target.zoomY), 0); - - var isTransparent = fabric.util.isTransparent( - target._cacheContext, Math.round(targetRelativeX), Math.round(targetRelativeY), this.targetFindTolerance); - - return isTransparent; - } - - var ctx = this.contextCache, - originalColor = target.selectionBackgroundColor, v = this.viewportTransform; - - target.selectionBackgroundColor = ''; - - this.clearContext(ctx); - - ctx.save(); - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - target.render(ctx); - ctx.restore(); - - target.selectionBackgroundColor = originalColor; - - var isTransparent = fabric.util.isTransparent( - ctx, x, y, this.targetFindTolerance); - - return isTransparent; - }, - - /** - * takes an event and determines if selection key has been pressed - * @private - * @param {Event} e Event object - */ - _isSelectionKeyPressed: function(e) { - var selectionKeyPressed = false; - - if (Object.prototype.toString.call(this.selectionKey) === '[object Array]') { - selectionKeyPressed = !!this.selectionKey.find(function(key) { return e[key] === true; }); - } - else { - selectionKeyPressed = e[this.selectionKey]; - } - - return selectionKeyPressed; - }, - - /** - * @private - * @param {Event} e Event object - * @param {fabric.Object} target - */ - _shouldClearSelection: function (e, target) { - var activeObjects = this.getActiveObjects(), - activeObject = this._activeObject; - - return ( - !target - || - (target && - activeObject && - activeObjects.length > 1 && - activeObjects.indexOf(target) === -1 && - activeObject !== target && - !this._isSelectionKeyPressed(e)) - || - (target && !target.evented) - || - (target && - !target.selectable && - activeObject && - activeObject !== target) - ); - }, - - /** - * centeredScaling from object can't override centeredScaling from canvas. - * this should be fixed, since object setting should take precedence over canvas. - * also this should be something that will be migrated in the control properties. - * as ability to define the origin of the transformation that the control provide. - * @private - * @param {fabric.Object} target - * @param {String} action - * @param {Boolean} altKey - */ - _shouldCenterTransform: function (target, action, altKey) { - if (!target) { - return; - } - - var centerTransform; - - if (action === 'scale' || action === 'scaleX' || action === 'scaleY' || action === 'resizing') { - centerTransform = this.centeredScaling || target.centeredScaling; - } - else if (action === 'rotate') { - centerTransform = this.centeredRotation || target.centeredRotation; - } - - return centerTransform ? !altKey : altKey; - }, - - /** - * should disappear before release 4.0 - * @private - */ - _getOriginFromCorner: function(target, corner) { - var origin = { - x: target.originX, - y: target.originY - }; - - if (corner === 'ml' || corner === 'tl' || corner === 'bl') { - origin.x = 'right'; - } - else if (corner === 'mr' || corner === 'tr' || corner === 'br') { - origin.x = 'left'; - } - - if (corner === 'tl' || corner === 'mt' || corner === 'tr') { - origin.y = 'bottom'; - } - else if (corner === 'bl' || corner === 'mb' || corner === 'br') { - origin.y = 'top'; - } - return origin; - }, - - /** - * @private - * @param {Boolean} alreadySelected true if target is already selected - * @param {String} corner a string representing the corner ml, mr, tl ... - * @param {Event} e Event object - * @param {fabric.Object} [target] inserted back to help overriding. Unused - */ - _getActionFromCorner: function(alreadySelected, corner, e, target) { - if (!corner || !alreadySelected) { - return 'drag'; - } - var control = target.controls[corner]; - return control.getActionName(e, control, target); - }, - - /** - * @private - * @param {Event} e Event object - * @param {fabric.Object} target - */ - _setupCurrentTransform: function (e, target, alreadySelected) { - if (!target) { - return; - } - - var pointer = this.getPointer(e), corner = target.__corner, - control = target.controls[corner], - actionHandler = (alreadySelected && corner) ? - control.getActionHandler(e, target, control) : fabric.controlsUtils.dragHandler, - action = this._getActionFromCorner(alreadySelected, corner, e, target), - origin = this._getOriginFromCorner(target, corner), - altKey = e[this.centeredKey], - transform = { - target: target, - action: action, - actionHandler: actionHandler, - corner: corner, - scaleX: target.scaleX, - scaleY: target.scaleY, - skewX: target.skewX, - skewY: target.skewY, - // used by transation - offsetX: pointer.x - target.left, - offsetY: pointer.y - target.top, - originX: origin.x, - originY: origin.y, - ex: pointer.x, - ey: pointer.y, - lastX: pointer.x, - lastY: pointer.y, - // unsure they are useful anymore. - // left: target.left, - // top: target.top, - theta: degreesToRadians(target.angle), - // end of unsure - width: target.width * target.scaleX, - shiftKey: e.shiftKey, - altKey: altKey, - original: fabric.util.saveObjectTransform(target), - }; - - if (this._shouldCenterTransform(target, action, altKey)) { - transform.originX = 'center'; - transform.originY = 'center'; - } - transform.original.originX = origin.x; - transform.original.originY = origin.y; - this._currentTransform = transform; - this._beforeTransform(e); - }, - - /** - * Set the cursor type of the canvas element - * @param {String} value Cursor type of the canvas element. - * @see http://www.w3.org/TR/css3-ui/#cursor - */ - setCursor: function (value) { - this.upperCanvasEl.style.cursor = value; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx to draw the selection on - */ - _drawSelection: function (ctx) { - var selector = this._groupSelector, - viewportStart = new fabric.Point(selector.ex, selector.ey), - start = fabric.util.transformPoint(viewportStart, this.viewportTransform), - viewportExtent = new fabric.Point(selector.ex + selector.left, selector.ey + selector.top), - extent = fabric.util.transformPoint(viewportExtent, this.viewportTransform), - minX = Math.min(start.x, extent.x), - minY = Math.min(start.y, extent.y), - maxX = Math.max(start.x, extent.x), - maxY = Math.max(start.y, extent.y), - strokeOffset = this.selectionLineWidth / 2; - - if (this.selectionColor) { - ctx.fillStyle = this.selectionColor; - ctx.fillRect(minX, minY, maxX - minX, maxY - minY); - } - - if (!this.selectionLineWidth || !this.selectionBorderColor) { - return; - } - ctx.lineWidth = this.selectionLineWidth; - ctx.strokeStyle = this.selectionBorderColor; - - minX += strokeOffset; - minY += strokeOffset; - maxX -= strokeOffset; - maxY -= strokeOffset; - // selection border - fabric.Object.prototype._setLineDash.call(this, ctx, this.selectionDashArray); - ctx.strokeRect(minX, minY, maxX - minX, maxY - minY); - }, - - /** - * Method that determines what object we are clicking on - * the skipGroup parameter is for internal use, is needed for shift+click action - * 11/09/2018 TODO: would be cool if findTarget could discern between being a full target - * or the outside part of the corner. - * @param {Event} e mouse event - * @param {Boolean} skipGroup when true, activeGroup is skipped and only objects are traversed through - * @return {fabric.Object} the target found - */ - findTarget: function (e, skipGroup) { - if (this.skipTargetFind) { - return; - } - - var ignoreZoom = true, - pointer = this.getPointer(e, ignoreZoom), - activeObject = this._activeObject, - aObjects = this.getActiveObjects(), - activeTarget, activeTargetSubs, - isTouch = isTouchEvent(e), - shouldLookForActive = (aObjects.length > 1 && !skipGroup) || aObjects.length === 1; - - // first check current group (if one exists) - // active group does not check sub targets like normal groups. - // if active group just exits. - this.targets = []; - - // if we hit the corner of an activeObject, let's return that. - if (shouldLookForActive && activeObject._findTargetCorner(pointer, isTouch)) { - return activeObject; - } - if (aObjects.length > 1 && !skipGroup && activeObject === this._searchPossibleTargets([activeObject], pointer)) { - return activeObject; - } - if (aObjects.length === 1 && - activeObject === this._searchPossibleTargets([activeObject], pointer)) { - if (!this.preserveObjectStacking) { - return activeObject; - } - else { - activeTarget = activeObject; - activeTargetSubs = this.targets; - this.targets = []; - } - } - var target = this._searchPossibleTargets(this._objects, pointer); - if (e[this.altSelectionKey] && target && activeTarget && target !== activeTarget) { - target = activeTarget; - this.targets = activeTargetSubs; - } - return target; - }, - - /** - * Checks point is inside the object. - * @param {Object} [pointer] x,y object of point coordinates we want to check. - * @param {fabric.Object} obj Object to test against - * @param {Object} [globalPointer] x,y object of point coordinates relative to canvas used to search per pixel target. - * @return {Boolean} true if point is contained within an area of given object - * @private - */ - _checkTarget: function(pointer, obj, globalPointer) { - if (obj && - obj.visible && - obj.evented && - // http://www.geog.ubc.ca/courses/klink/gis.notes/ncgia/u32.html - // http://idav.ucdavis.edu/~okreylos/TAship/Spring2000/PointInPolygon.html - obj.containsPoint(pointer) - ) { - if ((this.perPixelTargetFind || obj.perPixelTargetFind) && !obj.isEditing) { - var isTransparent = this.isTargetTransparent(obj, globalPointer.x, globalPointer.y); - if (!isTransparent) { - return true; - } - } - else { - return true; - } - } - }, - - /** - * Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted - * @param {Array} [objects] objects array to look into - * @param {Object} [pointer] x,y object of point coordinates we want to check. - * @return {fabric.Object} object that contains pointer - * @private - */ - _searchPossibleTargets: function(objects, pointer) { - // Cache all targets where their bounding box contains point. - var target, i = objects.length, subTarget; - // Do not check for currently grouped objects, since we check the parent group itself. - // until we call this function specifically to search inside the activeGroup - while (i--) { - var objToCheck = objects[i]; - var pointerToUse = objToCheck.group ? - this._normalizePointer(objToCheck.group, pointer) : pointer; - if (this._checkTarget(pointerToUse, objToCheck, pointer)) { - target = objects[i]; - if (target.subTargetCheck && target instanceof fabric.Group) { - subTarget = this._searchPossibleTargets(target._objects, pointer); - subTarget && this.targets.push(subTarget); - } - break; - } - } - return target; - }, - - /** - * Returns pointer coordinates without the effect of the viewport - * @param {Object} pointer with "x" and "y" number values - * @return {Object} object with "x" and "y" number values - */ - restorePointerVpt: function(pointer) { - return fabric.util.transformPoint( - pointer, - fabric.util.invertTransform(this.viewportTransform) - ); - }, - - /** - * Returns pointer coordinates relative to canvas. - * Can return coordinates with or without viewportTransform. - * ignoreZoom false gives back coordinates that represent - * the point clicked on canvas element. - * ignoreZoom true gives back coordinates after being processed - * by the viewportTransform ( sort of coordinates of what is displayed - * on the canvas where you are clicking. - * ignoreZoom true = HTMLElement coordinates relative to top,left - * ignoreZoom false, default = fabric space coordinates, the same used for shape position - * To interact with your shapes top and left you want to use ignoreZoom true - * most of the time, while ignoreZoom false will give you coordinates - * compatible with the object.oCoords system. - * of the time. - * @param {Event} e - * @param {Boolean} ignoreZoom - * @return {Object} object with "x" and "y" number values - */ - getPointer: function (e, ignoreZoom) { - // return cached values if we are in the event processing chain - if (this._absolutePointer && !ignoreZoom) { - return this._absolutePointer; - } - if (this._pointer && ignoreZoom) { - return this._pointer; - } - - var pointer = getPointer(e), - upperCanvasEl = this.upperCanvasEl, - bounds = upperCanvasEl.getBoundingClientRect(), - boundsWidth = bounds.width || 0, - boundsHeight = bounds.height || 0, - cssScale; - - if (!boundsWidth || !boundsHeight ) { - if ('top' in bounds && 'bottom' in bounds) { - boundsHeight = Math.abs( bounds.top - bounds.bottom ); - } - if ('right' in bounds && 'left' in bounds) { - boundsWidth = Math.abs( bounds.right - bounds.left ); - } - } - - this.calcOffset(); - pointer.x = pointer.x - this._offset.left; - pointer.y = pointer.y - this._offset.top; - if (!ignoreZoom) { - pointer = this.restorePointerVpt(pointer); - } - - var retinaScaling = this.getRetinaScaling(); - if (retinaScaling !== 1) { - pointer.x /= retinaScaling; - pointer.y /= retinaScaling; - } - - if (boundsWidth === 0 || boundsHeight === 0) { - // If bounds are not available (i.e. not visible), do not apply scale. - cssScale = { width: 1, height: 1 }; - } - else { - cssScale = { - width: upperCanvasEl.width / boundsWidth, - height: upperCanvasEl.height / boundsHeight - }; - } - - return { - x: pointer.x * cssScale.width, - y: pointer.y * cssScale.height - }; - }, - - /** - * @private - * @throws {CANVAS_INIT_ERROR} If canvas can not be initialized - */ - _createUpperCanvas: function () { - var lowerCanvasClass = this.lowerCanvasEl.className.replace(/\s*lower-canvas\s*/, ''), - lowerCanvasEl = this.lowerCanvasEl, upperCanvasEl = this.upperCanvasEl; - - // there is no need to create a new upperCanvas element if we have already one. - if (upperCanvasEl) { - upperCanvasEl.className = ''; - } - else { - upperCanvasEl = this._createCanvasElement(); - this.upperCanvasEl = upperCanvasEl; - } - fabric.util.addClass(upperCanvasEl, 'upper-canvas ' + lowerCanvasClass); - - this.wrapperEl.appendChild(upperCanvasEl); - - this._copyCanvasStyle(lowerCanvasEl, upperCanvasEl); - this._applyCanvasStyle(upperCanvasEl); - this.contextTop = upperCanvasEl.getContext('2d'); - }, - - /** - * @private - */ - _createCacheCanvas: function () { - this.cacheCanvasEl = this._createCanvasElement(); - this.cacheCanvasEl.setAttribute('width', this.width); - this.cacheCanvasEl.setAttribute('height', this.height); - this.contextCache = this.cacheCanvasEl.getContext('2d'); - }, - - /** - * @private - */ - _initWrapperElement: function () { - this.wrapperEl = fabric.util.wrapElement(this.lowerCanvasEl, 'div', { - 'class': this.containerClass - }); - fabric.util.setStyle(this.wrapperEl, { - width: this.width + 'px', - height: this.height + 'px', - position: 'relative' - }); - fabric.util.makeElementUnselectable(this.wrapperEl); - }, - - /** - * @private - * @param {HTMLElement} element canvas element to apply styles on - */ - _applyCanvasStyle: function (element) { - var width = this.width || element.width, - height = this.height || element.height; - - fabric.util.setStyle(element, { - position: 'absolute', - width: width + 'px', - height: height + 'px', - left: 0, - top: 0, - 'touch-action': this.allowTouchScrolling ? 'manipulation' : 'none', - '-ms-touch-action': this.allowTouchScrolling ? 'manipulation' : 'none' - }); - element.width = width; - element.height = height; - fabric.util.makeElementUnselectable(element); - }, - - /** - * Copy the entire inline style from one element (fromEl) to another (toEl) - * @private - * @param {Element} fromEl Element style is copied from - * @param {Element} toEl Element copied style is applied to - */ - _copyCanvasStyle: function (fromEl, toEl) { - toEl.style.cssText = fromEl.style.cssText; - }, - - /** - * Returns context of canvas where object selection is drawn - * @return {CanvasRenderingContext2D} - */ - getSelectionContext: function() { - return this.contextTop; - }, - - /** - * Returns <canvas> element on which object selection is drawn - * @return {HTMLCanvasElement} - */ - getSelectionElement: function () { - return this.upperCanvasEl; - }, - - /** - * Returns currently active object - * @return {fabric.Object} active object - */ - getActiveObject: function () { - return this._activeObject; - }, - - /** - * Returns an array with the current selected objects - * @return {fabric.Object} active object - */ - getActiveObjects: function () { - var active = this._activeObject; - if (active) { - if (active.type === 'activeSelection' && active._objects) { - return active._objects.slice(0); - } - else { - return [active]; - } - } - return []; - }, - - /** - * @private - * @param {fabric.Object} obj Object that was removed - */ - _onObjectRemoved: function(obj) { - // removing active object should fire "selection:cleared" events - if (obj === this._activeObject) { - this.fire('before:selection:cleared', { target: obj }); - this._discardActiveObject(); - this.fire('selection:cleared', { target: obj }); - obj.fire('deselected'); - } - if (obj === this._hoveredTarget){ - this._hoveredTarget = null; - this._hoveredTargets = []; - } - this.callSuper('_onObjectRemoved', obj); - }, - - /** - * @private - * Compares the old activeObject with the current one and fires correct events - * @param {fabric.Object} obj old activeObject - */ - _fireSelectionEvents: function(oldObjects, e) { - var somethingChanged = false, objects = this.getActiveObjects(), - added = [], removed = []; - oldObjects.forEach(function(oldObject) { - if (objects.indexOf(oldObject) === -1) { - somethingChanged = true; - oldObject.fire('deselected', { - e: e, - target: oldObject - }); - removed.push(oldObject); - } - }); - objects.forEach(function(object) { - if (oldObjects.indexOf(object) === -1) { - somethingChanged = true; - object.fire('selected', { - e: e, - target: object - }); - added.push(object); - } - }); - if (oldObjects.length > 0 && objects.length > 0) { - somethingChanged && this.fire('selection:updated', { - e: e, - selected: added, - deselected: removed, - }); - } - else if (objects.length > 0) { - this.fire('selection:created', { - e: e, - selected: added, - }); - } - else if (oldObjects.length > 0) { - this.fire('selection:cleared', { - e: e, - deselected: removed, - }); - } - }, - - /** - * Sets given object as the only active object on canvas - * @param {fabric.Object} object Object to set as an active one - * @param {Event} [e] Event (passed along when firing "object:selected") - * @return {fabric.Canvas} thisArg - * @chainable - */ - setActiveObject: function (object, e) { - var currentActives = this.getActiveObjects(); - this._setActiveObject(object, e); - this._fireSelectionEvents(currentActives, e); - return this; - }, - - /** - * This is a private method for now. - * This is supposed to be equivalent to setActiveObject but without firing - * any event. There is commitment to have this stay this way. - * This is the functional part of setActiveObject. - * @private - * @param {Object} object to set as active - * @param {Event} [e] Event (passed along when firing "object:selected") - * @return {Boolean} true if the selection happened - */ - _setActiveObject: function(object, e) { - if (this._activeObject === object) { - return false; - } - if (!this._discardActiveObject(e, object)) { - return false; - } - if (object.onSelect({ e: e })) { - return false; - } - this._activeObject = object; - return true; - }, - - /** - * This is a private method for now. - * This is supposed to be equivalent to discardActiveObject but without firing - * any events. There is commitment to have this stay this way. - * This is the functional part of discardActiveObject. - * @param {Event} [e] Event (passed along when firing "object:deselected") - * @param {Object} object to set as active - * @return {Boolean} true if the selection happened - * @private - */ - _discardActiveObject: function(e, object) { - var obj = this._activeObject; - if (obj) { - // onDeselect return TRUE to cancel selection; - if (obj.onDeselect({ e: e, object: object })) { - return false; - } - this._activeObject = null; - } - return true; - }, - - /** - * Discards currently active object and fire events. If the function is called by fabric - * as a consequence of a mouse event, the event is passed as a parameter and - * sent to the fire function for the custom events. When used as a method the - * e param does not have any application. - * @param {event} e - * @return {fabric.Canvas} thisArg - * @chainable - */ - discardActiveObject: function (e) { - var currentActives = this.getActiveObjects(), activeObject = this.getActiveObject(); - if (currentActives.length) { - this.fire('before:selection:cleared', { target: activeObject, e: e }); - } - this._discardActiveObject(e); - this._fireSelectionEvents(currentActives, e); - return this; - }, - - /** - * Clears a canvas element and removes all event listeners - * @return {fabric.Canvas} thisArg - * @chainable - */ - dispose: function () { - var wrapper = this.wrapperEl; - this.removeListeners(); - wrapper.removeChild(this.upperCanvasEl); - wrapper.removeChild(this.lowerCanvasEl); - this.contextCache = null; - this.contextTop = null; - ['upperCanvasEl', 'cacheCanvasEl'].forEach((function(element) { - fabric.util.cleanUpJsdomNode(this[element]); - this[element] = undefined; - }).bind(this)); - if (wrapper.parentNode) { - wrapper.parentNode.replaceChild(this.lowerCanvasEl, this.wrapperEl); - } - delete this.wrapperEl; - fabric.StaticCanvas.prototype.dispose.call(this); - return this; - }, - - /** - * Clears all contexts (background, main, top) of an instance - * @return {fabric.Canvas} thisArg - * @chainable - */ - clear: function () { - // this.discardActiveGroup(); - this.discardActiveObject(); - this.clearContext(this.contextTop); - return this.callSuper('clear'); - }, - - /** - * Draws objects' controls (borders/controls) - * @param {CanvasRenderingContext2D} ctx Context to render controls on - */ - drawControls: function(ctx) { - var activeObject = this._activeObject; - - if (activeObject) { - activeObject._renderControls(ctx); - } - }, - - /** - * @private - */ - _toObject: function(instance, methodName, propertiesToInclude) { - //If the object is part of the current selection group, it should - //be transformed appropriately - //i.e. it should be serialised as it would appear if the selection group - //were to be destroyed. - var originalProperties = this._realizeGroupTransformOnObject(instance), - object = this.callSuper('_toObject', instance, methodName, propertiesToInclude); - //Undo the damage we did by changing all of its properties - this._unwindGroupTransformOnObject(instance, originalProperties); - return object; - }, - - /** - * Realises an object's group transformation on it - * @private - * @param {fabric.Object} [instance] the object to transform (gets mutated) - * @returns the original values of instance which were changed - */ - _realizeGroupTransformOnObject: function(instance) { - if (instance.group && instance.group.type === 'activeSelection' && this._activeObject === instance.group) { - var layoutProps = ['angle', 'flipX', 'flipY', 'left', 'scaleX', 'scaleY', 'skewX', 'skewY', 'top']; - //Copy all the positionally relevant properties across now - var originalValues = {}; - layoutProps.forEach(function(prop) { - originalValues[prop] = instance[prop]; + * Returns fabric.IText instance from an object representation + * @static + * @memberOf fabric.IText + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.IText.fromObject = function (object) { + var styles = fabric.util.stylesFromArray(object.styles, object.text); + //copy object to prevent mutation + var objCopy = Object.assign({}, object, { styles: styles }); + return fabric.Object._fromObject(fabric.IText, objCopy, { + extraParam: 'text', }); - fabric.util.addTransformToObject(instance, this._activeObject.calcOwnMatrix()); - return originalValues; - } - else { - return null; - } - }, - - /** - * Restores the changed properties of instance - * @private - * @param {fabric.Object} [instance] the object to un-transform (gets mutated) - * @param {Object} [originalValues] the original values of instance, as returned by _realizeGroupTransformOnObject - */ - _unwindGroupTransformOnObject: function(instance, originalValues) { - if (originalValues) { - instance.set(originalValues); - } - }, - - /** - * @private - */ - _setSVGObject: function(markup, instance, reviver) { - //If the object is in a selection group, simulate what would happen to that - //object when the group is deselected - var originalProperties = this._realizeGroupTransformOnObject(instance); - this.callSuper('_setSVGObject', markup, instance, reviver); - this._unwindGroupTransformOnObject(instance, originalProperties); - }, - - setViewportTransform: function (vpt) { - if (this.renderOnAddRemove && this._activeObject && this._activeObject.isEditing) { - this._activeObject.clearContextTop(); - } - fabric.StaticCanvas.prototype.setViewportTransform.call(this, vpt); - } - }); - - // copying static properties manually to work around Opera's bug, - // where "prototype" property is enumerable and overrides existing prototype - for (var prop in fabric.StaticCanvas) { - if (prop !== 'prototype') { - fabric.Canvas[prop] = fabric.StaticCanvas[prop]; - } - } -})(); - - -(function() { - - var addListener = fabric.util.addListener, - removeListener = fabric.util.removeListener, - RIGHT_CLICK = 3, MIDDLE_CLICK = 2, LEFT_CLICK = 1, - addEventOptions = { passive: false }; - - function checkClick(e, value) { - return e.button && (e.button === value - 1); - } - - fabric.util.object.extend(fabric.Canvas.prototype, /** @lends fabric.Canvas.prototype */ { - - /** - * Contains the id of the touch event that owns the fabric transform - * @type Number - * @private - */ - mainTouchId: null, - - /** - * Adds mouse listeners to canvas - * @private - */ - _initEventListeners: function () { - // in case we initialized the class twice. This should not happen normally - // but in some kind of applications where the canvas element may be changed - // this is a workaround to having double listeners. - this.removeListeners(); - this._bindEvents(); - this.addOrRemove(addListener, 'add'); - }, - - /** - * return an event prefix pointer or mouse. - * @private - */ - _getEventPrefix: function () { - return this.enablePointerEvents ? 'pointer' : 'mouse'; - }, - - addOrRemove: function(functor, eventjsFunctor) { - var canvasElement = this.upperCanvasEl, - eventTypePrefix = this._getEventPrefix(); - functor(fabric.window, 'resize', this._onResize); - functor(canvasElement, eventTypePrefix + 'down', this._onMouseDown); - functor(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - functor(canvasElement, eventTypePrefix + 'out', this._onMouseOut); - functor(canvasElement, eventTypePrefix + 'enter', this._onMouseEnter); - functor(canvasElement, 'wheel', this._onMouseWheel); - functor(canvasElement, 'contextmenu', this._onContextMenu); - functor(canvasElement, 'dblclick', this._onDoubleClick); - functor(canvasElement, 'dragover', this._onDragOver); - functor(canvasElement, 'dragenter', this._onDragEnter); - functor(canvasElement, 'dragleave', this._onDragLeave); - functor(canvasElement, 'drop', this._onDrop); - if (!this.enablePointerEvents) { - functor(canvasElement, 'touchstart', this._onTouchStart, addEventOptions); - } - if (typeof eventjs !== 'undefined' && eventjsFunctor in eventjs) { - eventjs[eventjsFunctor](canvasElement, 'gesture', this._onGesture); - eventjs[eventjsFunctor](canvasElement, 'drag', this._onDrag); - eventjs[eventjsFunctor](canvasElement, 'orientation', this._onOrientationChange); - eventjs[eventjsFunctor](canvasElement, 'shake', this._onShake); - eventjs[eventjsFunctor](canvasElement, 'longpress', this._onLongPress); - } - }, - - /** - * Removes all event listeners - */ - removeListeners: function() { - this.addOrRemove(removeListener, 'remove'); - // if you dispose on a mouseDown, before mouse up, you need to clean document to... - var eventTypePrefix = this._getEventPrefix(); - removeListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); - removeListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); - removeListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - removeListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); - }, - - /** - * @private - */ - _bindEvents: function() { - if (this.eventsBound) { - // for any reason we pass here twice we do not want to bind events twice. - return; - } - this._onMouseDown = this._onMouseDown.bind(this); - this._onTouchStart = this._onTouchStart.bind(this); - this._onMouseMove = this._onMouseMove.bind(this); - this._onMouseUp = this._onMouseUp.bind(this); - this._onTouchEnd = this._onTouchEnd.bind(this); - this._onResize = this._onResize.bind(this); - this._onGesture = this._onGesture.bind(this); - this._onDrag = this._onDrag.bind(this); - this._onShake = this._onShake.bind(this); - this._onLongPress = this._onLongPress.bind(this); - this._onOrientationChange = this._onOrientationChange.bind(this); - this._onMouseWheel = this._onMouseWheel.bind(this); - this._onMouseOut = this._onMouseOut.bind(this); - this._onMouseEnter = this._onMouseEnter.bind(this); - this._onContextMenu = this._onContextMenu.bind(this); - this._onDoubleClick = this._onDoubleClick.bind(this); - this._onDragOver = this._onDragOver.bind(this); - this._onDragEnter = this._simpleEventHandler.bind(this, 'dragenter'); - this._onDragLeave = this._simpleEventHandler.bind(this, 'dragleave'); - this._onDrop = this._onDrop.bind(this); - this.eventsBound = true; - }, - - /** - * @private - * @param {Event} [e] Event object fired on Event.js gesture - * @param {Event} [self] Inner Event object - */ - _onGesture: function(e, self) { - this.__onTransformGesture && this.__onTransformGesture(e, self); - }, - - /** - * @private - * @param {Event} [e] Event object fired on Event.js drag - * @param {Event} [self] Inner Event object - */ - _onDrag: function(e, self) { - this.__onDrag && this.__onDrag(e, self); - }, - - /** - * @private - * @param {Event} [e] Event object fired on wheel event - */ - _onMouseWheel: function(e) { - this.__onMouseWheel(e); - }, - - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onMouseOut: function(e) { - var target = this._hoveredTarget; - this.fire('mouse:out', { target: target, e: e }); - this._hoveredTarget = null; - target && target.fire('mouseout', { e: e }); - - var _this = this; - this._hoveredTargets.forEach(function(_target){ - _this.fire('mouse:out', { target: target, e: e }); - _target && target.fire('mouseout', { e: e }); - }); - this._hoveredTargets = []; - - if (this._iTextInstances) { - this._iTextInstances.forEach(function(obj) { - if (obj.isEditing) { - obj.hiddenTextarea.focus(); - } - }); - } - }, - - /** - * @private - * @param {Event} e Event object fired on mouseenter - */ - _onMouseEnter: function(e) { - // This find target and consequent 'mouse:over' is used to - // clear old instances on hovered target. - // calling findTarget has the side effect of killing target.__corner. - // as a short term fix we are not firing this if we are currently transforming. - // as a long term fix we need to separate the action of finding a target with the - // side effects we added to it. - if (!this._currentTransform && !this.findTarget(e)) { - this.fire('mouse:over', { target: null, e: e }); - this._hoveredTarget = null; - this._hoveredTargets = []; - } - }, - - /** - * @private - * @param {Event} [e] Event object fired on Event.js orientation change - * @param {Event} [self] Inner Event object - */ - _onOrientationChange: function(e, self) { - this.__onOrientationChange && this.__onOrientationChange(e, self); - }, - - /** - * @private - * @param {Event} [e] Event object fired on Event.js shake - * @param {Event} [self] Inner Event object - */ - _onShake: function(e, self) { - this.__onShake && this.__onShake(e, self); - }, - - /** - * @private - * @param {Event} [e] Event object fired on Event.js shake - * @param {Event} [self] Inner Event object - */ - _onLongPress: function(e, self) { - this.__onLongPress && this.__onLongPress(e, self); - }, - - /** - * prevent default to allow drop event to be fired - * @private - * @param {Event} [e] Event object fired on Event.js shake - */ - _onDragOver: function(e) { - e.preventDefault(); - var target = this._simpleEventHandler('dragover', e); - this._fireEnterLeaveEvents(target, e); - }, - - /** - * `drop:before` is a an event that allow you to schedule logic - * before the `drop` event. Prefer `drop` event always, but if you need - * to run some drop-disabling logic on an event, since there is no way - * to handle event handlers ordering, use `drop:before` - * @param {Event} e - */ - _onDrop: function (e) { - this._simpleEventHandler('drop:before', e); - return this._simpleEventHandler('drop', e); - }, - - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onContextMenu: function (e) { - if (this.stopContextMenu) { - e.stopPropagation(); - e.preventDefault(); - } - return false; - }, - - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onDoubleClick: function (e) { - this._cacheTransformEventData(e); - this._handleEvent(e, 'dblclick'); - this._resetTransformEventData(e); - }, - - /** - * Return a the id of an event. - * returns either the pointerId or the identifier or 0 for the mouse event - * @private - * @param {Event} evt Event object - */ - getPointerId: function(evt) { - var changedTouches = evt.changedTouches; - - if (changedTouches) { - return changedTouches[0] && changedTouches[0].identifier; - } - - if (this.enablePointerEvents) { - return evt.pointerId; - } - - return -1; - }, - - /** - * Determines if an event has the id of the event that is considered main - * @private - * @param {evt} event Event object - */ - _isMainEvent: function(evt) { - if (evt.isPrimary === true) { - return true; - } - if (evt.isPrimary === false) { - return false; - } - if (evt.type === 'touchend' && evt.touches.length === 0) { - return true; - } - if (evt.changedTouches) { - return evt.changedTouches[0].identifier === this.mainTouchId; - } - return true; - }, - - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onTouchStart: function(e) { - e.preventDefault(); - if (this.mainTouchId === null) { - this.mainTouchId = this.getPointerId(e); - } - this.__onMouseDown(e); - this._resetTransformEventData(); - var canvasElement = this.upperCanvasEl, - eventTypePrefix = this._getEventPrefix(); - addListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); - addListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); - // Unbind mousedown to prevent double triggers from touch devices - removeListener(canvasElement, eventTypePrefix + 'down', this._onMouseDown); - }, - - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onMouseDown: function (e) { - this.__onMouseDown(e); - this._resetTransformEventData(); - var canvasElement = this.upperCanvasEl, - eventTypePrefix = this._getEventPrefix(); - removeListener(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - addListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); - addListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - }, - - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onTouchEnd: function(e) { - if (e.touches.length > 0) { - // if there are still touches stop here - return; - } - this.__onMouseUp(e); - this._resetTransformEventData(); - this.mainTouchId = null; - var eventTypePrefix = this._getEventPrefix(); - removeListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); - removeListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); - var _this = this; - if (this._willAddMouseDown) { - clearTimeout(this._willAddMouseDown); - } - this._willAddMouseDown = setTimeout(function() { - // Wait 400ms before rebinding mousedown to prevent double triggers - // from touch devices - addListener(_this.upperCanvasEl, eventTypePrefix + 'down', _this._onMouseDown); - _this._willAddMouseDown = 0; - }, 400); - }, - - /** - * @private - * @param {Event} e Event object fired on mouseup - */ - _onMouseUp: function (e) { - this.__onMouseUp(e); - this._resetTransformEventData(); - var canvasElement = this.upperCanvasEl, - eventTypePrefix = this._getEventPrefix(); - if (this._isMainEvent(e)) { - removeListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); - removeListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - addListener(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - } - }, - - /** - * @private - * @param {Event} e Event object fired on mousemove - */ - _onMouseMove: function (e) { - !this.allowTouchScrolling && e.preventDefault && e.preventDefault(); - this.__onMouseMove(e); - }, - - /** - * @private - */ - _onResize: function () { - this.calcOffset(); - }, - - /** - * Decides whether the canvas should be redrawn in mouseup and mousedown events. - * @private - * @param {Object} target - */ - _shouldRender: function(target) { - var activeObject = this._activeObject; - - if ( - !!activeObject !== !!target || - (activeObject && target && (activeObject !== target)) - ) { - // this covers: switch of target, from target to no target, selection of target - // multiSelection with key and mouse - return true; - } - else if (activeObject && activeObject.isEditing) { - // if we mouse up/down over a editing textbox a cursor change, - // there is no need to re render - return false; - } - return false; - }, - - /** - * Method that defines the actions when mouse is released on canvas. - * The method resets the currentTransform parameters, store the image corner - * position in the image object and render the canvas on top. - * @private - * @param {Event} e Event object fired on mouseup - */ - __onMouseUp: function (e) { - var target, transform = this._currentTransform, - groupSelector = this._groupSelector, shouldRender = false, - isClick = (!groupSelector || (groupSelector.left === 0 && groupSelector.top === 0)); - this._cacheTransformEventData(e); - target = this._target; - this._handleEvent(e, 'up:before'); - // if right/middle click just fire events and return - // target undefined will make the _handleEvent search the target - if (checkClick(e, RIGHT_CLICK)) { - if (this.fireRightClick) { - this._handleEvent(e, 'up', RIGHT_CLICK, isClick); - } - return; - } - - if (checkClick(e, MIDDLE_CLICK)) { - if (this.fireMiddleClick) { - this._handleEvent(e, 'up', MIDDLE_CLICK, isClick); - } - this._resetTransformEventData(); - return; - } - - if (this.isDrawingMode && this._isCurrentlyDrawing) { - this._onMouseUpInDrawingMode(e); - return; - } - - if (!this._isMainEvent(e)) { - return; - } - if (transform) { - this._finalizeCurrentTransform(e); - shouldRender = transform.actionPerformed; - } - if (!isClick) { - var targetWasActive = target === this._activeObject; - this._maybeGroupObjects(e); - if (!shouldRender) { - shouldRender = ( - this._shouldRender(target) || - (!targetWasActive && target === this._activeObject) - ); - } - } - var corner, pointer; - if (target) { - corner = target._findTargetCorner( - this.getPointer(e, true), - fabric.util.isTouchEvent(e) - ); - if (target.selectable && target !== this._activeObject && target.activeOn === 'up') { - this.setActiveObject(target, e); - shouldRender = true; - } - else { - var control = target.controls[corner], - mouseUpHandler = control && control.getMouseUpHandler(e, target, control); - if (mouseUpHandler) { - pointer = this.getPointer(e); - mouseUpHandler(e, transform, pointer.x, pointer.y); - } - } - target.isMoving = false; - } - // if we are ending up a transform on a different control or a new object - // fire the original mouse up from the corner that started the transform - if (transform && (transform.target !== target || transform.corner !== corner)) { - var originalControl = transform.target && transform.target.controls[transform.corner], - originalMouseUpHandler = originalControl && originalControl.getMouseUpHandler(e, target, control); - pointer = pointer || this.getPointer(e); - originalMouseUpHandler && originalMouseUpHandler(e, transform, pointer.x, pointer.y); - } - this._setCursorFromEvent(e, target); - this._handleEvent(e, 'up', LEFT_CLICK, isClick); - this._groupSelector = null; - this._currentTransform = null; - // reset the target information about which corner is selected - target && (target.__corner = 0); - if (shouldRender) { - this.requestRenderAll(); - } - else if (!isClick) { - this.renderTop(); - } - }, - - /** - * @private - * Handle event firing for target and subtargets - * @param {Event} e event from mouse - * @param {String} eventType event to fire (up, down or move) - * @return {Fabric.Object} target return the the target found, for internal reasons. - */ - _simpleEventHandler: function(eventType, e) { - var target = this.findTarget(e), - targets = this.targets, - options = { - e: e, - target: target, - subTargets: targets, - }; - this.fire(eventType, options); - target && target.fire(eventType, options); - if (!targets) { - return target; - } - for (var i = 0; i < targets.length; i++) { - targets[i].fire(eventType, options); - } - return target; - }, - - /** - * @private - * Handle event firing for target and subtargets - * @param {Event} e event from mouse - * @param {String} eventType event to fire (up, down or move) - * @param {fabric.Object} targetObj receiving event - * @param {Number} [button] button used in the event 1 = left, 2 = middle, 3 = right - * @param {Boolean} isClick for left button only, indicates that the mouse up happened without move. - */ - _handleEvent: function(e, eventType, button, isClick) { - var target = this._target, - targets = this.targets || [], - options = { - e: e, - target: target, - subTargets: targets, - button: button || LEFT_CLICK, - isClick: isClick || false, - pointer: this._pointer, - absolutePointer: this._absolutePointer, - transform: this._currentTransform - }; - if (eventType === 'up') { - options.currentTarget = this.findTarget(e); - options.currentSubTargets = this.targets; - } - this.fire('mouse:' + eventType, options); - target && target.fire('mouse' + eventType, options); - for (var i = 0; i < targets.length; i++) { - targets[i].fire('mouse' + eventType, options); - } - }, - - /** - * @private - * @param {Event} e send the mouse event that generate the finalize down, so it can be used in the event - */ - _finalizeCurrentTransform: function(e) { - - var transform = this._currentTransform, - target = transform.target, - options = { - e: e, - target: target, - transform: transform, - action: transform.action, - }; - - if (target._scaling) { - target._scaling = false; - } - - target.setCoords(); - - if (transform.actionPerformed || (this.stateful && target.hasStateChanged())) { - this._fire('modified', options); - } - }, - - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onMouseDownInDrawingMode: function(e) { - this._isCurrentlyDrawing = true; - if (this.getActiveObject()) { - this.discardActiveObject(e).requestRenderAll(); - } - var pointer = this.getPointer(e); - this.freeDrawingBrush.onMouseDown(pointer, { e: e, pointer: pointer }); - this._handleEvent(e, 'down'); - }, - - /** - * @private - * @param {Event} e Event object fired on mousemove - */ - _onMouseMoveInDrawingMode: function(e) { - if (this._isCurrentlyDrawing) { - var pointer = this.getPointer(e); - this.freeDrawingBrush.onMouseMove(pointer, { e: e, pointer: pointer }); - } - this.setCursor(this.freeDrawingCursor); - this._handleEvent(e, 'move'); - }, - - /** - * @private - * @param {Event} e Event object fired on mouseup - */ - _onMouseUpInDrawingMode: function(e) { - var pointer = this.getPointer(e); - this._isCurrentlyDrawing = this.freeDrawingBrush.onMouseUp({ e: e, pointer: pointer }); - this._handleEvent(e, 'up'); - }, - - /** - * Method that defines the actions when mouse is clicked on canvas. - * The method inits the currentTransform parameters and renders all the - * canvas so the current image can be placed on the top canvas and the rest - * in on the container one. - * @private - * @param {Event} e Event object fired on mousedown - */ - __onMouseDown: function (e) { - this._cacheTransformEventData(e); - this._handleEvent(e, 'down:before'); - var target = this._target; - // if right click just fire events - if (checkClick(e, RIGHT_CLICK)) { - if (this.fireRightClick) { - this._handleEvent(e, 'down', RIGHT_CLICK); - } - return; - } - - if (checkClick(e, MIDDLE_CLICK)) { - if (this.fireMiddleClick) { - this._handleEvent(e, 'down', MIDDLE_CLICK); - } - return; - } - - if (this.isDrawingMode) { - this._onMouseDownInDrawingMode(e); - return; - } - - if (!this._isMainEvent(e)) { - return; - } - - // ignore if some object is being transformed at this moment - if (this._currentTransform) { - return; - } - - var pointer = this._pointer; - // save pointer for check in __onMouseUp event - this._previousPointer = pointer; - var shouldRender = this._shouldRender(target), - shouldGroup = this._shouldGroup(e, target); - if (this._shouldClearSelection(e, target)) { - this.discardActiveObject(e); - } - else if (shouldGroup) { - this._handleGrouping(e, target); - target = this._activeObject; - } - - if (this.selection && (!target || - (!target.selectable && !target.isEditing && target !== this._activeObject))) { - this._groupSelector = { - ex: this._absolutePointer.x, - ey: this._absolutePointer.y, - top: 0, - left: 0 - }; - } - - if (target) { - var alreadySelected = target === this._activeObject; - if (target.selectable && target.activeOn === 'down') { - this.setActiveObject(target, e); - } - var corner = target._findTargetCorner( - this.getPointer(e, true), - fabric.util.isTouchEvent(e) - ); - target.__corner = corner; - if (target === this._activeObject && (corner || !shouldGroup)) { - this._setupCurrentTransform(e, target, alreadySelected); - var control = target.controls[corner], - pointer = this.getPointer(e), - mouseDownHandler = control && control.getMouseDownHandler(e, target, control); - if (mouseDownHandler) { - mouseDownHandler(e, this._currentTransform, pointer.x, pointer.y); - } - } - } - this._handleEvent(e, 'down'); - // we must renderAll so that we update the visuals - (shouldRender || shouldGroup) && this.requestRenderAll(); - }, - - /** - * reset cache form common information needed during event processing - * @private - */ - _resetTransformEventData: function() { - this._target = null; - this._pointer = null; - this._absolutePointer = null; - }, - - /** - * Cache common information needed during event processing - * @private - * @param {Event} e Event object fired on event - */ - _cacheTransformEventData: function(e) { - // reset in order to avoid stale caching - this._resetTransformEventData(); - this._pointer = this.getPointer(e, true); - this._absolutePointer = this.restorePointerVpt(this._pointer); - this._target = this._currentTransform ? this._currentTransform.target : this.findTarget(e) || null; - }, - - /** - * @private - */ - _beforeTransform: function(e) { - var t = this._currentTransform; - this.stateful && t.target.saveState(); - this.fire('before:transform', { - e: e, - transform: t, - }); - }, - - /** - * Method that defines the actions when mouse is hovering the canvas. - * The currentTransform parameter will define whether the user is rotating/scaling/translating - * an image or neither of them (only hovering). A group selection is also possible and would cancel - * all any other type of action. - * In case of an image transformation only the top canvas will be rendered. - * @private - * @param {Event} e Event object fired on mousemove - */ - __onMouseMove: function (e) { - this._handleEvent(e, 'move:before'); - this._cacheTransformEventData(e); - var target, pointer; - - if (this.isDrawingMode) { - this._onMouseMoveInDrawingMode(e); - return; - } - - if (!this._isMainEvent(e)) { - return; - } - - var groupSelector = this._groupSelector; - - // We initially clicked in an empty area, so we draw a box for multiple selection - if (groupSelector) { - pointer = this._absolutePointer; - - groupSelector.left = pointer.x - groupSelector.ex; - groupSelector.top = pointer.y - groupSelector.ey; - - this.renderTop(); - } - else if (!this._currentTransform) { - target = this.findTarget(e) || null; - this._setCursorFromEvent(e, target); - this._fireOverOutEvents(target, e); - } - else { - this._transformObject(e); - } - this._handleEvent(e, 'move'); - this._resetTransformEventData(); - }, - - /** - * Manage the mouseout, mouseover events for the fabric object on the canvas - * @param {Fabric.Object} target the target where the target from the mousemove event - * @param {Event} e Event object fired on mousemove - * @private - */ - _fireOverOutEvents: function(target, e) { - var _hoveredTarget = this._hoveredTarget, - _hoveredTargets = this._hoveredTargets, targets = this.targets, - length = Math.max(_hoveredTargets.length, targets.length); - - this.fireSyntheticInOutEvents(target, e, { - oldTarget: _hoveredTarget, - evtOut: 'mouseout', - canvasEvtOut: 'mouse:out', - evtIn: 'mouseover', - canvasEvtIn: 'mouse:over', - }); - for (var i = 0; i < length; i++){ - this.fireSyntheticInOutEvents(targets[i], e, { - oldTarget: _hoveredTargets[i], - evtOut: 'mouseout', - evtIn: 'mouseover', - }); - } - this._hoveredTarget = target; - this._hoveredTargets = this.targets.concat(); - }, - - /** - * Manage the dragEnter, dragLeave events for the fabric objects on the canvas - * @param {Fabric.Object} target the target where the target from the onDrag event - * @param {Event} e Event object fired on ondrag - * @private - */ - _fireEnterLeaveEvents: function(target, e) { - var _draggedoverTarget = this._draggedoverTarget, - _hoveredTargets = this._hoveredTargets, targets = this.targets, - length = Math.max(_hoveredTargets.length, targets.length); - - this.fireSyntheticInOutEvents(target, e, { - oldTarget: _draggedoverTarget, - evtOut: 'dragleave', - evtIn: 'dragenter', - }); - for (var i = 0; i < length; i++) { - this.fireSyntheticInOutEvents(targets[i], e, { - oldTarget: _hoveredTargets[i], - evtOut: 'dragleave', - evtIn: 'dragenter', - }); - } - this._draggedoverTarget = target; - }, - - /** - * Manage the synthetic in/out events for the fabric objects on the canvas - * @param {Fabric.Object} target the target where the target from the supported events - * @param {Event} e Event object fired - * @param {Object} config configuration for the function to work - * @param {String} config.targetName property on the canvas where the old target is stored - * @param {String} [config.canvasEvtOut] name of the event to fire at canvas level for out - * @param {String} config.evtOut name of the event to fire for out - * @param {String} [config.canvasEvtIn] name of the event to fire at canvas level for in - * @param {String} config.evtIn name of the event to fire for in - * @private - */ - fireSyntheticInOutEvents: function(target, e, config) { - var inOpt, outOpt, oldTarget = config.oldTarget, outFires, inFires, - targetChanged = oldTarget !== target, canvasEvtIn = config.canvasEvtIn, canvasEvtOut = config.canvasEvtOut; - if (targetChanged) { - inOpt = { e: e, target: target, previousTarget: oldTarget }; - outOpt = { e: e, target: oldTarget, nextTarget: target }; - } - inFires = target && targetChanged; - outFires = oldTarget && targetChanged; - if (outFires) { - canvasEvtOut && this.fire(canvasEvtOut, outOpt); - oldTarget.fire(config.evtOut, outOpt); - } - if (inFires) { - canvasEvtIn && this.fire(canvasEvtIn, inOpt); - target.fire(config.evtIn, inOpt); - } - }, - - /** - * Method that defines actions when an Event Mouse Wheel - * @param {Event} e Event object fired on mouseup - */ - __onMouseWheel: function(e) { - this._cacheTransformEventData(e); - this._handleEvent(e, 'wheel'); - this._resetTransformEventData(); - }, - - /** - * @private - * @param {Event} e Event fired on mousemove - */ - _transformObject: function(e) { - var pointer = this.getPointer(e), - transform = this._currentTransform; - - transform.reset = false; - transform.shiftKey = e.shiftKey; - transform.altKey = e[this.centeredKey]; - - this._performTransformAction(e, transform, pointer); - transform.actionPerformed && this.requestRenderAll(); - }, - - /** - * @private - */ - _performTransformAction: function(e, transform, pointer) { - var x = pointer.x, - y = pointer.y, - action = transform.action, - actionPerformed = false, - actionHandler = transform.actionHandler; - // this object could be created from the function in the control handlers - - - if (actionHandler) { - actionPerformed = actionHandler(e, transform, x, y); - } - if (action === 'drag' && actionPerformed) { - transform.target.isMoving = true; - this.setCursor(transform.target.moveCursor || this.moveCursor); - } - transform.actionPerformed = transform.actionPerformed || actionPerformed; - }, - - /** - * @private - */ - _fire: fabric.controlsUtils.fireEvent, - - /** - * Sets the cursor depending on where the canvas is being hovered. - * Note: very buggy in Opera - * @param {Event} e Event object - * @param {Object} target Object that the mouse is hovering, if so. - */ - _setCursorFromEvent: function (e, target) { - if (!target) { - this.setCursor(this.defaultCursor); - return false; - } - var hoverCursor = target.hoverCursor || this.hoverCursor, - activeSelection = this._activeObject && this._activeObject.type === 'activeSelection' ? - this._activeObject : null, - // only show proper corner when group selection is not active - corner = (!activeSelection || !activeSelection.contains(target)) - // here we call findTargetCorner always with undefined for the touch parameter. - // we assume that if you are using a cursor you do not need to interact with - // the bigger touch area. - && target._findTargetCorner(this.getPointer(e, true)); - - if (!corner) { - if (target.subTargetCheck){ - // hoverCursor should come from top-most subTarget, - // so we walk the array backwards - this.targets.concat().reverse().map(function(_target){ - hoverCursor = _target.hoverCursor || hoverCursor; - }); - } - this.setCursor(hoverCursor); - } - else { - this.setCursor(this.getCornerCursor(corner, target, e)); - } - }, - - /** - * @private - */ - getCornerCursor: function(corner, target, e) { - var control = target.controls[corner]; - return control.cursorStyleHandler(e, control, target); - } - }); -})(); - - -(function() { - - var min = Math.min, - max = Math.max; - - fabric.util.object.extend(fabric.Canvas.prototype, /** @lends fabric.Canvas.prototype */ { - - /** - * @private - * @param {Event} e Event object - * @param {fabric.Object} target - * @return {Boolean} - */ - _shouldGroup: function(e, target) { - var activeObject = this._activeObject; - return activeObject && this._isSelectionKeyPressed(e) && target && target.selectable && this.selection && - (activeObject !== target || activeObject.type === 'activeSelection') && !target.onSelect({ e: e }); - }, - - /** - * @private - * @param {Event} e Event object - * @param {fabric.Object} target - */ - _handleGrouping: function (e, target) { - var activeObject = this._activeObject; - // avoid multi select when shift click on a corner - if (activeObject.__corner) { - return; - } - if (target === activeObject) { - // if it's a group, find target again, using activeGroup objects - target = this.findTarget(e, true); - // if even object is not found or we are on activeObjectCorner, bail out - if (!target || !target.selectable) { - return; - } - } - if (activeObject && activeObject.type === 'activeSelection') { - this._updateActiveSelection(target, e); - } - else { - this._createActiveSelection(target, e); - } - }, - - /** - * @private - */ - _updateActiveSelection: function(target, e) { - var activeSelection = this._activeObject, - currentActiveObjects = activeSelection._objects.slice(0); - if (activeSelection.contains(target)) { - activeSelection.removeWithUpdate(target); - this._hoveredTarget = target; - this._hoveredTargets = this.targets.concat(); - if (activeSelection.size() === 1) { - // activate last remaining object - this._setActiveObject(activeSelection.item(0), e); - } - } - else { - activeSelection.addWithUpdate(target); - this._hoveredTarget = activeSelection; - this._hoveredTargets = this.targets.concat(); - } - this._fireSelectionEvents(currentActiveObjects, e); - }, - - /** - * @private - */ - _createActiveSelection: function(target, e) { - var currentActives = this.getActiveObjects(), group = this._createGroup(target); - this._hoveredTarget = group; - // ISSUE 4115: should we consider subTargets here? - // this._hoveredTargets = []; - // this._hoveredTargets = this.targets.concat(); - this._setActiveObject(group, e); - this._fireSelectionEvents(currentActives, e); - }, - - /** - * @private - * @param {Object} target - */ - _createGroup: function(target) { - var objects = this._objects, - isActiveLower = objects.indexOf(this._activeObject) < objects.indexOf(target), - groupObjects = isActiveLower - ? [this._activeObject, target] - : [target, this._activeObject]; - this._activeObject.isEditing && this._activeObject.exitEditing(); - return new fabric.ActiveSelection(groupObjects, { - canvas: this - }); - }, - - /** - * @private - * @param {Event} e mouse event - */ - _groupSelectedObjects: function (e) { - - var group = this._collectObjects(e), - aGroup; - - // do not create group for 1 element only - if (group.length === 1) { - this.setActiveObject(group[0], e); - } - else if (group.length > 1) { - aGroup = new fabric.ActiveSelection(group.reverse(), { - canvas: this - }); - this.setActiveObject(aGroup, e); - } - }, - - /** - * @private - */ - _collectObjects: function(e) { - var group = [], - currentObject, - x1 = this._groupSelector.ex, - y1 = this._groupSelector.ey, - x2 = x1 + this._groupSelector.left, - y2 = y1 + this._groupSelector.top, - selectionX1Y1 = new fabric.Point(min(x1, x2), min(y1, y2)), - selectionX2Y2 = new fabric.Point(max(x1, x2), max(y1, y2)), - allowIntersect = !this.selectionFullyContained, - isClick = x1 === x2 && y1 === y2; - // we iterate reverse order to collect top first in case of click. - for (var i = this._objects.length; i--; ) { - currentObject = this._objects[i]; - - if (!currentObject || !currentObject.selectable || !currentObject.visible) { - continue; - } - - if ((allowIntersect && currentObject.intersectsWithRect(selectionX1Y1, selectionX2Y2, true)) || - currentObject.isContainedWithinRect(selectionX1Y1, selectionX2Y2, true) || - (allowIntersect && currentObject.containsPoint(selectionX1Y1, null, true)) || - (allowIntersect && currentObject.containsPoint(selectionX2Y2, null, true)) - ) { - group.push(currentObject); - // only add one object if it's a click - if (isClick) { - break; - } - } - } - - if (group.length > 1) { - group = group.filter(function(object) { - return !object.onSelect({ e: e }); - }); - } - - return group; - }, - - /** - * @private - */ - _maybeGroupObjects: function(e) { - if (this.selection && this._groupSelector) { - this._groupSelectedObjects(e); - } - this.setCursor(this.defaultCursor); - // clear selection and current transformation - this._groupSelector = null; - } - }); - -})(); - - -(function () { - fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ { - - /** - * Exports canvas element to a dataurl image. Note that when multiplier is used, cropping is scaled appropriately - * @param {Object} [options] Options object - * @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png" - * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg. - * @param {Number} [options.multiplier=1] Multiplier to scale by, to have consistent - * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 - * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 - * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 - * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 - * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 2.0.0 - * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format - * @see {@link http://jsfiddle.net/fabricjs/NfZVb/|jsFiddle demo} - * @example Generate jpeg dataURL with lower quality - * var dataURL = canvas.toDataURL({ - * format: 'jpeg', - * quality: 0.8 - * }); - * @example Generate cropped png dataURL (clipping of canvas) - * var dataURL = canvas.toDataURL({ - * format: 'png', - * left: 100, - * top: 100, - * width: 200, - * height: 200 - * }); - * @example Generate double scaled png dataURL - * var dataURL = canvas.toDataURL({ - * format: 'png', - * multiplier: 2 - * }); - */ - toDataURL: function (options) { - options || (options = { }); - - var format = options.format || 'png', - quality = options.quality || 1, - multiplier = (options.multiplier || 1) * (options.enableRetinaScaling ? this.getRetinaScaling() : 1), - canvasEl = this.toCanvasElement(multiplier, options); - return fabric.util.toDataURL(canvasEl, format, quality); - }, - - /** - * Create a new HTMLCanvas element painted with the current canvas content. - * No need to resize the actual one or repaint it. - * Will transfer object ownership to a new canvas, paint it, and set everything back. - * This is an intermediary step used to get to a dataUrl but also it is useful to - * create quick image copies of a canvas without passing for the dataUrl string - * @param {Number} [multiplier] a zoom factor. - * @param {Object} [cropping] Cropping informations - * @param {Number} [cropping.left] Cropping left offset. - * @param {Number} [cropping.top] Cropping top offset. - * @param {Number} [cropping.width] Cropping width. - * @param {Number} [cropping.height] Cropping height. - */ - toCanvasElement: function(multiplier, cropping) { - multiplier = multiplier || 1; - cropping = cropping || { }; - var scaledWidth = (cropping.width || this.width) * multiplier, - scaledHeight = (cropping.height || this.height) * multiplier, - zoom = this.getZoom(), - originalWidth = this.width, - originalHeight = this.height, - newZoom = zoom * multiplier, - vp = this.viewportTransform, - translateX = (vp[4] - (cropping.left || 0)) * multiplier, - translateY = (vp[5] - (cropping.top || 0)) * multiplier, - originalInteractive = this.interactive, - newVp = [newZoom, 0, 0, newZoom, translateX, translateY], - originalRetina = this.enableRetinaScaling, - canvasEl = fabric.util.createCanvasElement(), - originalContextTop = this.contextTop; - canvasEl.width = scaledWidth; - canvasEl.height = scaledHeight; - this.contextTop = null; - this.enableRetinaScaling = false; - this.interactive = false; - this.viewportTransform = newVp; - this.width = scaledWidth; - this.height = scaledHeight; - this.calcViewportBoundaries(); - this.renderCanvas(canvasEl.getContext('2d'), this._objects); - this.viewportTransform = vp; - this.width = originalWidth; - this.height = originalHeight; - this.calcViewportBoundaries(); - this.interactive = originalInteractive; - this.enableRetinaScaling = originalRetina; - this.contextTop = originalContextTop; - return canvasEl; - }, - }); - -})(); - - -fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ { - /** - * Populates canvas with data from the specified JSON. - * JSON format must conform to the one of {@link fabric.Canvas#toJSON} - * @param {String|Object} json JSON string or object - * @param {Function} callback Callback, invoked when json is parsed - * and corresponding objects (e.g: {@link fabric.Image}) - * are initialized - * @param {Function} [reviver] Method for further parsing of JSON elements, called after each fabric object created. - * @return {fabric.Canvas} instance - * @chainable - * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#deserialization} - * @see {@link http://jsfiddle.net/fabricjs/fmgXt/|jsFiddle demo} - * @example loadFromJSON - * canvas.loadFromJSON(json, canvas.renderAll.bind(canvas)); - * @example loadFromJSON with reviver - * canvas.loadFromJSON(json, canvas.renderAll.bind(canvas), function(o, object) { - * // `o` = json object - * // `object` = fabric.Object instance - * // ... do some stuff ... - * }); - */ - loadFromJSON: function (json, callback, reviver) { - if (!json) { - return; - } - - // serialize if it wasn't already - var serialized = (typeof json === 'string') - ? JSON.parse(json) - : fabric.util.object.clone(json); - - var _this = this, - clipPath = serialized.clipPath, - renderOnAddRemove = this.renderOnAddRemove; - - this.renderOnAddRemove = false; - - delete serialized.clipPath; - - this._enlivenObjects(serialized.objects, function (enlivenedObjects) { - _this.clear(); - _this._setBgOverlay(serialized, function () { - if (clipPath) { - _this._enlivenObjects([clipPath], function (enlivenedCanvasClip) { - _this.clipPath = enlivenedCanvasClip[0]; - _this.__setupCanvas.call(_this, serialized, enlivenedObjects, renderOnAddRemove, callback); - }); - } - else { - _this.__setupCanvas.call(_this, serialized, enlivenedObjects, renderOnAddRemove, callback); - } - }); - }, reviver); - return this; - }, - - /** - * @private - * @param {Object} serialized Object with background and overlay information - * @param {Array} restored canvas objects - * @param {Function} cached renderOnAddRemove callback - * @param {Function} callback Invoked after all background and overlay images/patterns loaded - */ - __setupCanvas: function(serialized, enlivenedObjects, renderOnAddRemove, callback) { - var _this = this; - enlivenedObjects.forEach(function(obj, index) { - // we splice the array just in case some custom classes restored from JSON - // will add more object to canvas at canvas init. - _this.insertAt(obj, index); - }); - this.renderOnAddRemove = renderOnAddRemove; - // remove parts i cannot set as options - delete serialized.objects; - delete serialized.backgroundImage; - delete serialized.overlayImage; - delete serialized.background; - delete serialized.overlay; - // this._initOptions does too many things to just - // call it. Normally loading an Object from JSON - // create the Object instance. Here the Canvas is - // already an instance and we are just loading things over it - this._setOptions(serialized); - this.renderAll(); - callback && callback(); - }, - - /** - * @private - * @param {Object} serialized Object with background and overlay information - * @param {Function} callback Invoked after all background and overlay images/patterns loaded - */ - _setBgOverlay: function(serialized, callback) { - var loaded = { - backgroundColor: false, - overlayColor: false, - backgroundImage: false, - overlayImage: false - }; - - if (!serialized.backgroundImage && !serialized.overlayImage && !serialized.background && !serialized.overlay) { - callback && callback(); - return; - } - - var cbIfLoaded = function () { - if (loaded.backgroundImage && loaded.overlayImage && loaded.backgroundColor && loaded.overlayColor) { - callback && callback(); - } - }; - - this.__setBgOverlay('backgroundImage', serialized.backgroundImage, loaded, cbIfLoaded); - this.__setBgOverlay('overlayImage', serialized.overlayImage, loaded, cbIfLoaded); - this.__setBgOverlay('backgroundColor', serialized.background, loaded, cbIfLoaded); - this.__setBgOverlay('overlayColor', serialized.overlay, loaded, cbIfLoaded); - }, - - /** - * @private - * @param {String} property Property to set (backgroundImage, overlayImage, backgroundColor, overlayColor) - * @param {(Object|String)} value Value to set - * @param {Object} loaded Set loaded property to true if property is set - * @param {Object} callback Callback function to invoke after property is set - */ - __setBgOverlay: function(property, value, loaded, callback) { - var _this = this; - - if (!value) { - loaded[property] = true; - callback && callback(); - return; - } - - if (property === 'backgroundImage' || property === 'overlayImage') { - fabric.util.enlivenObjects([value], function(enlivedObject){ - _this[property] = enlivedObject[0]; - loaded[property] = true; - callback && callback(); - }); - } - else { - this['set' + fabric.util.string.capitalize(property, true)](value, function() { - loaded[property] = true; - callback && callback(); - }); - } - }, - - /** - * @private - * @param {Array} objects - * @param {Function} callback - * @param {Function} [reviver] - */ - _enlivenObjects: function (objects, callback, reviver) { - if (!objects || objects.length === 0) { - callback && callback([]); - return; - } - - fabric.util.enlivenObjects(objects, function(enlivenedObjects) { - callback && callback(enlivenedObjects); - }, null, reviver); - }, - - /** - * @private - * @param {String} format - * @param {Function} callback - */ - _toDataURL: function (format, callback) { - this.clone(function (clone) { - callback(clone.toDataURL(format)); - }); - }, - - /** - * @private - * @param {String} format - * @param {Number} multiplier - * @param {Function} callback - */ - _toDataURLWithMultiplier: function (format, multiplier, callback) { - this.clone(function (clone) { - callback(clone.toDataURLWithMultiplier(format, multiplier)); - }); - }, - - /** - * Clones canvas instance - * @param {Object} [callback] Receives cloned instance as a first argument - * @param {Array} [properties] Array of properties to include in the cloned canvas and children - */ - clone: function (callback, properties) { - var data = JSON.stringify(this.toJSON(properties)); - this.cloneWithoutData(function(clone) { - clone.loadFromJSON(data, function() { - callback && callback(clone); - }); - }); - }, - - /** - * Clones canvas instance without cloning existing data. - * This essentially copies canvas dimensions, clipping properties, etc. - * but leaves data empty (so that you can populate it with your own) - * @param {Object} [callback] Receives cloned instance as a first argument - */ - cloneWithoutData: function(callback) { - var el = fabric.util.createCanvasElement(); - - el.width = this.width; - el.height = this.height; - - var clone = new fabric.Canvas(el); - if (this.backgroundImage) { - clone.setBackgroundImage(this.backgroundImage.src, function() { - clone.renderAll(); - callback && callback(clone); - }); - clone.backgroundImageOpacity = this.backgroundImageOpacity; - clone.backgroundImageStretch = this.backgroundImageStretch; - } - else { - callback && callback(clone); - } - } -}); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - extend = fabric.util.object.extend, - clone = fabric.util.object.clone, - toFixed = fabric.util.toFixed, - capitalize = fabric.util.string.capitalize, - degreesToRadians = fabric.util.degreesToRadians, - objectCaching = !fabric.isLikelyNode, - ALIASING_LIMIT = 2; - - if (fabric.Object) { - return; - } - - /** - * Root object class from which all 2d shape classes inherit from - * @class fabric.Object - * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#objects} - * @see {@link fabric.Object#initialize} for constructor definition - * - * @fires added - * @fires removed - * - * @fires selected - * @fires deselected - * @fires modified - * @fires modified - * @fires moved - * @fires scaled - * @fires rotated - * @fires skewed - * - * @fires rotating - * @fires scaling - * @fires moving - * @fires skewing - * - * @fires mousedown - * @fires mouseup - * @fires mouseover - * @fires mouseout - * @fires mousewheel - * @fires mousedblclick - * - * @fires dragover - * @fires dragenter - * @fires dragleave - * @fires drop - */ - fabric.Object = fabric.util.createClass(fabric.CommonMethods, /** @lends fabric.Object.prototype */ { - - /** - * Type of an object (rect, circle, path, etc.). - * Note that this property is meant to be read-only and not meant to be modified. - * If you modify, certain parts of Fabric (such as JSON loading) won't work correctly. - * @type String - * @default - */ - type: 'object', - - /** - * Horizontal origin of transformation of an object (one of "left", "right", "center") - * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups - * @type String - * @default - */ - originX: 'left', - - /** - * Vertical origin of transformation of an object (one of "top", "bottom", "center") - * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups - * @type String - * @default - */ - originY: 'top', - - /** - * Top position of an object. Note that by default it's relative to object top. You can change this by setting originY={top/center/bottom} - * @type Number - * @default - */ - top: 0, - - /** - * Left position of an object. Note that by default it's relative to object left. You can change this by setting originX={left/center/right} - * @type Number - * @default - */ - left: 0, - - /** - * Object width - * @type Number - * @default - */ - width: 0, - - /** - * Object height - * @type Number - * @default - */ - height: 0, - - /** - * Object scale factor (horizontal) - * @type Number - * @default - */ - scaleX: 1, - - /** - * Object scale factor (vertical) - * @type Number - * @default - */ - scaleY: 1, - - /** - * When true, an object is rendered as flipped horizontally - * @type Boolean - * @default - */ - flipX: false, - - /** - * When true, an object is rendered as flipped vertically - * @type Boolean - * @default - */ - flipY: false, - - /** - * Opacity of an object - * @type Number - * @default - */ - opacity: 1, - - /** - * Angle of rotation of an object (in degrees) - * @type Number - * @default - */ - angle: 0, - - /** - * Angle of skew on x axes of an object (in degrees) - * @type Number - * @default - */ - skewX: 0, - - /** - * Angle of skew on y axes of an object (in degrees) - * @type Number - * @default - */ - skewY: 0, - - /** - * Size of object's controlling corners (in pixels) - * @type Number - * @default - */ - cornerSize: 13, - - /** - * Size of object's controlling corners when touch interaction is detected - * @type Number - * @default - */ - touchCornerSize: 24, - - /** - * When true, object's controlling corners are rendered as transparent inside (i.e. stroke instead of fill) - * @type Boolean - * @default - */ - transparentCorners: true, - - /** - * Default cursor value used when hovering over this object on canvas - * @type String - * @default - */ - hoverCursor: null, - - /** - * Default cursor value used when moving this object on canvas - * @type String - * @default - */ - moveCursor: null, - - /** - * Padding between object and its controlling borders (in pixels) - * @type Number - * @default - */ - padding: 0, - - /** - * Color of controlling borders of an object (when it's active) - * @type String - * @default - */ - borderColor: 'rgb(178,204,255)', - - /** - * Array specifying dash pattern of an object's borders (hasBorder must be true) - * @since 1.6.2 - * @type Array - */ - borderDashArray: null, - - /** - * Color of controlling corners of an object (when it's active) - * @type String - * @default - */ - cornerColor: 'rgb(178,204,255)', - - /** - * Color of controlling corners of an object (when it's active and transparentCorners false) - * @since 1.6.2 - * @type String - * @default - */ - cornerStrokeColor: null, - - /** - * Specify style of control, 'rect' or 'circle' - * @since 1.6.2 - * @type String - */ - cornerStyle: 'rect', - - /** - * Array specifying dash pattern of an object's control (hasBorder must be true) - * @since 1.6.2 - * @type Array - */ - cornerDashArray: null, - - /** - * When true, this object will use center point as the origin of transformation - * when being scaled via the controls. - * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). - * @since 1.3.4 - * @type Boolean - * @default - */ - centeredScaling: false, - - /** - * When true, this object will use center point as the origin of transformation - * when being rotated via the controls. - * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). - * @since 1.3.4 - * @type Boolean - * @default - */ - centeredRotation: true, - - /** - * Color of object's fill - * takes css colors https://www.w3.org/TR/css-color-3/ - * @type String - * @default - */ - fill: 'rgb(0,0,0)', - - /** - * Fill rule used to fill an object - * accepted values are nonzero, evenodd - * Backwards incompatibility note: This property was used for setting globalCompositeOperation until v1.4.12 (use `fabric.Object#globalCompositeOperation` instead) - * @type String - * @default - */ - fillRule: 'nonzero', - - /** - * Composite rule used for canvas globalCompositeOperation - * @type String - * @default - */ - globalCompositeOperation: 'source-over', - - /** - * Background color of an object. - * takes css colors https://www.w3.org/TR/css-color-3/ - * @type String - * @default - */ - backgroundColor: '', - - /** - * Selection Background color of an object. colored layer behind the object when it is active. - * does not mix good with globalCompositeOperation methods. - * @type String - * @default - */ - selectionBackgroundColor: '', - - /** - * When defined, an object is rendered via stroke and this property specifies its color - * takes css colors https://www.w3.org/TR/css-color-3/ - * @type String - * @default - */ - stroke: null, - - /** - * Width of a stroke used to render this object - * @type Number - * @default - */ - strokeWidth: 1, - - /** - * Array specifying dash pattern of an object's stroke (stroke must be defined) - * @type Array - */ - strokeDashArray: null, - - /** - * Line offset of an object's stroke - * @type Number - * @default - */ - strokeDashOffset: 0, - - /** - * Line endings style of an object's stroke (one of "butt", "round", "square") - * @type String - * @default - */ - strokeLineCap: 'butt', - - /** - * Corner style of an object's stroke (one of "bevel", "round", "miter") - * @type String - * @default - */ - strokeLineJoin: 'miter', - - /** - * Maximum miter length (used for strokeLineJoin = "miter") of an object's stroke - * @type Number - * @default - */ - strokeMiterLimit: 4, - - /** - * Shadow object representing shadow of this shape - * @type fabric.Shadow - * @default - */ - shadow: null, - - /** - * Opacity of object's controlling borders when object is active and moving - * @type Number - * @default - */ - borderOpacityWhenMoving: 0.4, - - /** - * Scale factor of object's controlling borders - * bigger number will make a thicker border - * border is 1, so this is basically a border thickness - * since there is no way to change the border itself. - * @type Number - * @default - */ - borderScaleFactor: 1, - - /** - * Minimum allowed scale value of an object - * @type Number - * @default - */ - minScaleLimit: 0, - - /** - * When set to `false`, an object can not be selected for modification (using either point-click-based or group-based selection). - * But events still fire on it. - * @type Boolean - * @default - */ - selectable: true, - - /** - * When set to `false`, an object can not be a target of events. All events propagate through it. Introduced in v1.3.4 - * @type Boolean - * @default - */ - evented: true, - - /** - * When set to `false`, an object is not rendered on canvas - * @type Boolean - * @default - */ - visible: true, - - /** - * When set to `false`, object's controls are not displayed and can not be used to manipulate object - * @type Boolean - * @default - */ - hasControls: true, - - /** - * When set to `false`, object's controlling borders are not rendered - * @type Boolean - * @default - */ - hasBorders: true, - - /** - * When set to `true`, objects are "found" on canvas on per-pixel basis rather than according to bounding box - * @type Boolean - * @default - */ - perPixelTargetFind: false, - - /** - * When `false`, default object's values are not included in its serialization - * @type Boolean - * @default - */ - includeDefaultValues: true, - - /** - * When `true`, object horizontal movement is locked - * @type Boolean - * @default - */ - lockMovementX: false, - - /** - * When `true`, object vertical movement is locked - * @type Boolean - * @default - */ - lockMovementY: false, - - /** - * When `true`, object rotation is locked - * @type Boolean - * @default - */ - lockRotation: false, - - /** - * When `true`, object horizontal scaling is locked - * @type Boolean - * @default - */ - lockScalingX: false, - - /** - * When `true`, object vertical scaling is locked - * @type Boolean - * @default - */ - lockScalingY: false, - - /** - * When `true`, object horizontal skewing is locked - * @type Boolean - * @default - */ - lockSkewingX: false, - - /** - * When `true`, object vertical skewing is locked - * @type Boolean - * @default - */ - lockSkewingY: false, - - /** - * When `true`, object cannot be flipped by scaling into negative values - * @type Boolean - * @default - */ - lockScalingFlip: false, - - /** - * When `true`, object is not exported in OBJECT/JSON - * @since 1.6.3 - * @type Boolean - * @default - */ - excludeFromExport: false, - - /** - * When `true`, object is cached on an additional canvas. - * When `false`, object is not cached unless necessary ( clipPath ) - * default to true - * @since 1.7.0 - * @type Boolean - * @default true - */ - objectCaching: objectCaching, - - /** - * When `true`, object properties are checked for cache invalidation. In some particular - * situation you may want this to be disabled ( spray brush, very big, groups) - * or if your application does not allow you to modify properties for groups child you want - * to disable it for groups. - * default to false - * since 1.7.0 - * @type Boolean - * @default false - */ - statefullCache: false, - - /** - * When `true`, cache does not get updated during scaling. The picture will get blocky if scaled - * too much and will be redrawn with correct details at the end of scaling. - * this setting is performance and application dependant. - * default to true - * since 1.7.0 - * @type Boolean - * @default true - */ - noScaleCache: true, - - /** - * When `false`, the stoke width will scale with the object. - * When `true`, the stroke will always match the exact pixel size entered for stroke width. - * this Property does not work on Text classes or drawing call that uses strokeText,fillText methods - * default to false - * @since 2.6.0 - * @type Boolean - * @default false - * @type Boolean - * @default false - */ - strokeUniform: false, - - /** - * When set to `true`, object's cache will be rerendered next render call. - * since 1.7.0 - * @type Boolean - * @default true - */ - dirty: true, - - /** - * keeps the value of the last hovered corner during mouse move. - * 0 is no corner, or 'mt', 'ml', 'mtr' etc.. - * It should be private, but there is no harm in using it as - * a read-only property. - * @type number|string|any - * @default 0 - */ - __corner: 0, - - /** - * Determines if the fill or the stroke is drawn first (one of "fill" or "stroke") - * @type String - * @default - */ - paintFirst: 'fill', - - /** - * When 'down', object is set to active on mousedown/touchstart - * When 'up', object is set to active on mouseup/touchend - * Experimental. Let's see if this breaks anything before supporting officially - * @private - * since 4.4.0 - * @type String - * @default 'down' - */ - activeOn: 'down', - - /** - * List of properties to consider when checking if state - * of an object is changed (fabric.Object#hasStateChanged) - * as well as for history (undo/redo) purposes - * @type Array - */ - stateProperties: ( - 'top left width height scaleX scaleY flipX flipY originX originY transformMatrix ' + - 'stroke strokeWidth strokeDashArray strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit ' + - 'angle opacity fill globalCompositeOperation shadow visible backgroundColor ' + - 'skewX skewY fillRule paintFirst clipPath strokeUniform' - ).split(' '), - - /** - * List of properties to consider when checking if cache needs refresh - * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single - * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty - * and refreshed at the next render - * @type Array - */ - cacheProperties: ( - 'fill stroke strokeWidth strokeDashArray width height paintFirst strokeUniform' + - ' strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit backgroundColor clipPath' - ).split(' '), - - /** - * List of properties to consider for animating colors. - * @type Array - */ - colorProperties: ( - 'fill stroke backgroundColor' - ).split(' '), - - /** - * a fabricObject that, without stroke define a clipping area with their shape. filled in black - * the clipPath object gets used when the object has rendered, and the context is placed in the center - * of the object cacheCanvas. - * If you want 0,0 of a clipPath to align with an object center, use clipPath.originX/Y to 'center' - * @type fabric.Object - */ - clipPath: undefined, - - /** - * Meaningful ONLY when the object is used as clipPath. - * if true, the clipPath will make the object clip to the outside of the clipPath - * since 2.4.0 - * @type boolean - * @default false - */ - inverted: false, - - /** - * Meaningful ONLY when the object is used as clipPath. - * if true, the clipPath will have its top and left relative to canvas, and will - * not be influenced by the object transform. This will make the clipPath relative - * to the canvas, but clipping just a particular object. - * WARNING this is beta, this feature may change or be renamed. - * since 2.4.0 - * @type boolean - * @default false - */ - absolutePositioned: false, - - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function(options) { - if (options) { - this.setOptions(options); - } - }, - - /** - * Create a the canvas used to keep the cached copy of the object - * @private - */ - _createCacheCanvas: function() { - this._cacheProperties = {}; - this._cacheCanvas = fabric.util.createCanvasElement(); - this._cacheContext = this._cacheCanvas.getContext('2d'); - this._updateCacheCanvas(); - // if canvas gets created, is empty, so dirty. - this.dirty = true; - }, - - /** - * Limit the cache dimensions so that X * Y do not cross fabric.perfLimitSizeTotal - * and each side do not cross fabric.cacheSideLimit - * those numbers are configurable so that you can get as much detail as you want - * making bargain with performances. - * @param {Object} dims - * @param {Object} dims.width width of canvas - * @param {Object} dims.height height of canvas - * @param {Object} dims.zoomX zoomX zoom value to unscale the canvas before drawing cache - * @param {Object} dims.zoomY zoomY zoom value to unscale the canvas before drawing cache - * @return {Object}.width width of canvas - * @return {Object}.height height of canvas - * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache - * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache - */ - _limitCacheSize: function(dims) { - var perfLimitSizeTotal = fabric.perfLimitSizeTotal, - width = dims.width, height = dims.height, - max = fabric.maxCacheSideLimit, min = fabric.minCacheSideLimit; - if (width <= max && height <= max && width * height <= perfLimitSizeTotal) { - if (width < min) { - dims.width = min; - } - if (height < min) { - dims.height = min; - } - return dims; - } - var ar = width / height, limitedDims = fabric.util.limitDimsByArea(ar, perfLimitSizeTotal), - capValue = fabric.util.capValue, - x = capValue(min, limitedDims.x, max), - y = capValue(min, limitedDims.y, max); - if (width > x) { - dims.zoomX /= width / x; - dims.width = x; - dims.capped = true; - } - if (height > y) { - dims.zoomY /= height / y; - dims.height = y; - dims.capped = true; - } - return dims; - }, - - /** - * Return the dimension and the zoom level needed to create a cache canvas - * big enough to host the object to be cached. - * @private - * @return {Object}.x width of object to be cached - * @return {Object}.y height of object to be cached - * @return {Object}.width width of canvas - * @return {Object}.height height of canvas - * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache - * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache - */ - _getCacheCanvasDimensions: function() { - var objectScale = this.getTotalObjectScaling(), - // caculate dimensions without skewing - dim = this._getTransformedDimensions(0, 0), - neededX = dim.x * objectScale.scaleX / this.scaleX, - neededY = dim.y * objectScale.scaleY / this.scaleY; - return { - // for sure this ALIASING_LIMIT is slightly creating problem - // in situation in which the cache canvas gets an upper limit - // also objectScale contains already scaleX and scaleY - width: neededX + ALIASING_LIMIT, - height: neededY + ALIASING_LIMIT, - zoomX: objectScale.scaleX, - zoomY: objectScale.scaleY, - x: neededX, - y: neededY - }; - }, - - /** - * Update width and height of the canvas for cache - * returns true or false if canvas needed resize. - * @private - * @return {Boolean} true if the canvas has been resized - */ - _updateCacheCanvas: function() { - var targetCanvas = this.canvas; - if (this.noScaleCache && targetCanvas && targetCanvas._currentTransform) { - var target = targetCanvas._currentTransform.target, - action = targetCanvas._currentTransform.action; - if (this === target && action.slice && action.slice(0, 5) === 'scale') { - return false; - } - } - var canvas = this._cacheCanvas, - dims = this._limitCacheSize(this._getCacheCanvasDimensions()), - minCacheSize = fabric.minCacheSideLimit, - width = dims.width, height = dims.height, drawingWidth, drawingHeight, - zoomX = dims.zoomX, zoomY = dims.zoomY, - dimensionsChanged = width !== this.cacheWidth || height !== this.cacheHeight, - zoomChanged = this.zoomX !== zoomX || this.zoomY !== zoomY, - shouldRedraw = dimensionsChanged || zoomChanged, - additionalWidth = 0, additionalHeight = 0, shouldResizeCanvas = false; - if (dimensionsChanged) { - var canvasWidth = this._cacheCanvas.width, - canvasHeight = this._cacheCanvas.height, - sizeGrowing = width > canvasWidth || height > canvasHeight, - sizeShrinking = (width < canvasWidth * 0.9 || height < canvasHeight * 0.9) && - canvasWidth > minCacheSize && canvasHeight > minCacheSize; - shouldResizeCanvas = sizeGrowing || sizeShrinking; - if (sizeGrowing && !dims.capped && (width > minCacheSize || height > minCacheSize)) { - additionalWidth = width * 0.1; - additionalHeight = height * 0.1; - } - } - if (this instanceof fabric.Text && this.path) { - shouldRedraw = true; - shouldResizeCanvas = true; - additionalWidth += this.getHeightOfLine(0) * this.zoomX; - additionalHeight += this.getHeightOfLine(0) * this.zoomY; - } - if (shouldRedraw) { - if (shouldResizeCanvas) { - canvas.width = Math.ceil(width + additionalWidth); - canvas.height = Math.ceil(height + additionalHeight); - } - else { - this._cacheContext.setTransform(1, 0, 0, 1, 0, 0); - this._cacheContext.clearRect(0, 0, canvas.width, canvas.height); - } - drawingWidth = dims.x / 2; - drawingHeight = dims.y / 2; - this.cacheTranslationX = Math.round(canvas.width / 2 - drawingWidth) + drawingWidth; - this.cacheTranslationY = Math.round(canvas.height / 2 - drawingHeight) + drawingHeight; - this.cacheWidth = width; - this.cacheHeight = height; - this._cacheContext.translate(this.cacheTranslationX, this.cacheTranslationY); - this._cacheContext.scale(zoomX, zoomY); - this.zoomX = zoomX; - this.zoomY = zoomY; - return true; - } - return false; - }, - - /** - * Sets object's properties from options - * @param {Object} [options] Options object - */ - setOptions: function(options) { - this._setOptions(options); - this._initGradient(options.fill, 'fill'); - this._initGradient(options.stroke, 'stroke'); - this._initPattern(options.fill, 'fill'); - this._initPattern(options.stroke, 'stroke'); - }, - - /** - * Transforms context when rendering an object - * @param {CanvasRenderingContext2D} ctx Context - */ - transform: function(ctx) { - var needFullTransform = (this.group && !this.group._transformDone) || - (this.group && this.canvas && ctx === this.canvas.contextTop); - var m = this.calcTransformMatrix(!needFullTransform); - ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); - }, - - /** - * Returns an object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toObject: function(propertiesToInclude) { - var NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS, - - object = { - type: this.type, - version: fabric.version, - originX: this.originX, - originY: this.originY, - left: toFixed(this.left, NUM_FRACTION_DIGITS), - top: toFixed(this.top, NUM_FRACTION_DIGITS), - width: toFixed(this.width, NUM_FRACTION_DIGITS), - height: toFixed(this.height, NUM_FRACTION_DIGITS), - fill: (this.fill && this.fill.toObject) ? this.fill.toObject() : this.fill, - stroke: (this.stroke && this.stroke.toObject) ? this.stroke.toObject() : this.stroke, - strokeWidth: toFixed(this.strokeWidth, NUM_FRACTION_DIGITS), - strokeDashArray: this.strokeDashArray ? this.strokeDashArray.concat() : this.strokeDashArray, - strokeLineCap: this.strokeLineCap, - strokeDashOffset: this.strokeDashOffset, - strokeLineJoin: this.strokeLineJoin, - strokeUniform: this.strokeUniform, - strokeMiterLimit: toFixed(this.strokeMiterLimit, NUM_FRACTION_DIGITS), - scaleX: toFixed(this.scaleX, NUM_FRACTION_DIGITS), - scaleY: toFixed(this.scaleY, NUM_FRACTION_DIGITS), - angle: toFixed(this.angle, NUM_FRACTION_DIGITS), - flipX: this.flipX, - flipY: this.flipY, - opacity: toFixed(this.opacity, NUM_FRACTION_DIGITS), - shadow: (this.shadow && this.shadow.toObject) ? this.shadow.toObject() : this.shadow, - visible: this.visible, - backgroundColor: this.backgroundColor, - fillRule: this.fillRule, - paintFirst: this.paintFirst, - globalCompositeOperation: this.globalCompositeOperation, - skewX: toFixed(this.skewX, NUM_FRACTION_DIGITS), - skewY: toFixed(this.skewY, NUM_FRACTION_DIGITS), - }; - - if (this.clipPath && !this.clipPath.excludeFromExport) { - object.clipPath = this.clipPath.toObject(propertiesToInclude); - object.clipPath.inverted = this.clipPath.inverted; - object.clipPath.absolutePositioned = this.clipPath.absolutePositioned; - } - - fabric.util.populateWithProperties(this, object, propertiesToInclude); - if (!this.includeDefaultValues) { - object = this._removeDefaultValues(object); - } - - return object; - }, - - /** - * Returns (dataless) object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toDatalessObject: function(propertiesToInclude) { - // will be overwritten by subclasses - return this.toObject(propertiesToInclude); - }, - - /** - * @private - * @param {Object} object - */ - _removeDefaultValues: function(object) { - var prototype = fabric.util.getKlass(object.type).prototype, - stateProperties = prototype.stateProperties; - stateProperties.forEach(function(prop) { - if (prop === 'left' || prop === 'top') { - return; - } - if (object[prop] === prototype[prop]) { - delete object[prop]; - } - var isArray = Object.prototype.toString.call(object[prop]) === '[object Array]' && - Object.prototype.toString.call(prototype[prop]) === '[object Array]'; - - // basically a check for [] === [] - if (isArray && object[prop].length === 0 && prototype[prop].length === 0) { - delete object[prop]; - } - }); - - return object; - }, - - /** - * Returns a string representation of an instance - * @return {String} - */ - toString: function() { - return '#'; - }, - - /** - * Return the object scale factor counting also the group scaling - * @return {Object} object with scaleX and scaleY properties - */ - getObjectScaling: function() { - // if the object is a top level one, on the canvas, we go for simple aritmetic - // otherwise the complex method with angles will return approximations and decimals - // and will likely kill the cache when not needed - // https://github.com/fabricjs/fabric.js/issues/7157 - if (!this.group) { - return { - scaleX: this.scaleX, - scaleY: this.scaleY, - }; - } - // if we are inside a group total zoom calculation is complex, we defer to generic matrices - var options = fabric.util.qrDecompose(this.calcTransformMatrix()); - return { scaleX: Math.abs(options.scaleX), scaleY: Math.abs(options.scaleY) }; - }, - - /** - * Return the object scale factor counting also the group scaling, zoom and retina - * @return {Object} object with scaleX and scaleY properties - */ - getTotalObjectScaling: function() { - var scale = this.getObjectScaling(), scaleX = scale.scaleX, scaleY = scale.scaleY; - if (this.canvas) { - var zoom = this.canvas.getZoom(); - var retina = this.canvas.getRetinaScaling(); - scaleX *= zoom * retina; - scaleY *= zoom * retina; - } - return { scaleX: scaleX, scaleY: scaleY }; - }, - - /** - * Return the object opacity counting also the group property - * @return {Number} - */ - getObjectOpacity: function() { - var opacity = this.opacity; - if (this.group) { - opacity *= this.group.getObjectOpacity(); - } - return opacity; - }, - - /** - * @private - * @param {String} key - * @param {*} value - * @return {fabric.Object} thisArg - */ - _set: function(key, value) { - var shouldConstrainValue = (key === 'scaleX' || key === 'scaleY'), - isChanged = this[key] !== value, groupNeedsUpdate = false; - - if (shouldConstrainValue) { - value = this._constrainScale(value); - } - if (key === 'scaleX' && value < 0) { - this.flipX = !this.flipX; - value *= -1; - } - else if (key === 'scaleY' && value < 0) { - this.flipY = !this.flipY; - value *= -1; - } - else if (key === 'shadow' && value && !(value instanceof fabric.Shadow)) { - value = new fabric.Shadow(value); - } - else if (key === 'dirty' && this.group) { - this.group.set('dirty', value); - } - - this[key] = value; - - if (isChanged) { - groupNeedsUpdate = this.group && this.group.isOnACache(); - if (this.cacheProperties.indexOf(key) > -1) { - this.dirty = true; - groupNeedsUpdate && this.group.set('dirty', true); - } - else if (groupNeedsUpdate && this.stateProperties.indexOf(key) > -1) { - this.group.set('dirty', true); - } - } - return this; - }, - - /** - * This callback function is called by the parent group of an object every - * time a non-delegated property changes on the group. It is passed the key - * and value as parameters. Not adding in this function's signature to avoid - * Travis build error about unused variables. - */ - setOnGroup: function() { - // implemented by sub-classes, as needed. - }, - - /** - * Retrieves viewportTransform from Object's canvas if possible - * @method getViewportTransform - * @memberOf fabric.Object.prototype - * @return {Array} - */ - getViewportTransform: function() { - if (this.canvas && this.canvas.viewportTransform) { - return this.canvas.viewportTransform; - } - return fabric.iMatrix.concat(); - }, - - /* - * @private - * return if the object would be visible in rendering - * @memberOf fabric.Object.prototype - * @return {Boolean} - */ - isNotVisible: function() { - return this.opacity === 0 || - (!this.width && !this.height && this.strokeWidth === 0) || - !this.visible; - }, - - /** - * Renders an object on a specified context - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - render: function(ctx) { - // do not render if width/height are zeros or object is not visible - if (this.isNotVisible()) { - return; - } - if (this.canvas && this.canvas.skipOffscreen && !this.group && !this.isOnScreen()) { - return; - } - ctx.save(); - this._setupCompositeOperation(ctx); - this.drawSelectionBackground(ctx); - this.transform(ctx); - this._setOpacity(ctx); - this._setShadow(ctx, this); - if (this.shouldCache()) { - this.renderCache(); - this.drawCacheOnCanvas(ctx); - } - else { - this._removeCacheCanvas(); - this.dirty = false; - this.drawObject(ctx); - if (this.objectCaching && this.statefullCache) { - this.saveState({ propertySet: 'cacheProperties' }); - } - } - ctx.restore(); - }, - - renderCache: function(options) { - options = options || {}; - if (!this._cacheCanvas) { - this._createCacheCanvas(); - } - if (this.isCacheDirty()) { - this.statefullCache && this.saveState({ propertySet: 'cacheProperties' }); - this.drawObject(this._cacheContext, options.forClipping); - this.dirty = false; - } - }, - - /** - * Remove cacheCanvas and its dimensions from the objects - */ - _removeCacheCanvas: function() { - this._cacheCanvas = null; - this.cacheWidth = 0; - this.cacheHeight = 0; - }, - - /** - * return true if the object will draw a stroke - * Does not consider text styles. This is just a shortcut used at rendering time - * We want it to be an approximation and be fast. - * wrote to avoid extra caching, it has to return true when stroke happens, - * can guess when it will not happen at 100% chance, does not matter if it misses - * some use case where the stroke is invisible. - * @since 3.0.0 - * @returns Boolean - */ - hasStroke: function() { - return this.stroke && this.stroke !== 'transparent' && this.strokeWidth !== 0; - }, - - /** - * return true if the object will draw a fill - * Does not consider text styles. This is just a shortcut used at rendering time - * We want it to be an approximation and be fast. - * wrote to avoid extra caching, it has to return true when fill happens, - * can guess when it will not happen at 100% chance, does not matter if it misses - * some use case where the fill is invisible. - * @since 3.0.0 - * @returns Boolean - */ - hasFill: function() { - return this.fill && this.fill !== 'transparent'; - }, - - /** - * When set to `true`, force the object to have its own cache, even if it is inside a group - * it may be needed when your object behave in a particular way on the cache and always needs - * its own isolated canvas to render correctly. - * Created to be overridden - * since 1.7.12 - * @returns Boolean - */ - needsItsOwnCache: function() { - if (this.paintFirst === 'stroke' && - this.hasFill() && this.hasStroke() && typeof this.shadow === 'object') { - return true; - } - if (this.clipPath) { - return true; - } - return false; - }, - - /** - * Decide if the object should cache or not. Create its own cache level - * objectCaching is a global flag, wins over everything - * needsItsOwnCache should be used when the object drawing method requires - * a cache step. None of the fabric classes requires it. - * Generally you do not cache objects in groups because the group outside is cached. - * Read as: cache if is needed, or if the feature is enabled but we are not already caching. - * @return {Boolean} - */ - shouldCache: function() { - this.ownCaching = this.needsItsOwnCache() || ( - this.objectCaching && - (!this.group || !this.group.isOnACache()) - ); - return this.ownCaching; - }, - - /** - * Check if this object or a child object will cast a shadow - * used by Group.shouldCache to know if child has a shadow recursively - * @return {Boolean} - */ - willDrawShadow: function() { - return !!this.shadow && (this.shadow.offsetX !== 0 || this.shadow.offsetY !== 0); - }, - - /** - * Execute the drawing operation for an object clipPath - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {fabric.Object} clipPath - */ - drawClipPathOnCache: function(ctx, clipPath) { - ctx.save(); - // DEBUG: uncomment this line, comment the following - // ctx.globalAlpha = 0.4 - if (clipPath.inverted) { - ctx.globalCompositeOperation = 'destination-out'; - } - else { - ctx.globalCompositeOperation = 'destination-in'; - } - //ctx.scale(1 / 2, 1 / 2); - if (clipPath.absolutePositioned) { - var m = fabric.util.invertTransform(this.calcTransformMatrix()); - ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); - } - clipPath.transform(ctx); - ctx.scale(1 / clipPath.zoomX, 1 / clipPath.zoomY); - ctx.drawImage(clipPath._cacheCanvas, -clipPath.cacheTranslationX, -clipPath.cacheTranslationY); - ctx.restore(); - }, - - /** - * Execute the drawing operation for an object on a specified context - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - drawObject: function(ctx, forClipping) { - var originalFill = this.fill, originalStroke = this.stroke; - if (forClipping) { - this.fill = 'black'; - this.stroke = ''; - this._setClippingProperties(ctx); - } - else { - this._renderBackground(ctx); - } - this._render(ctx); - this._drawClipPath(ctx, this.clipPath); - this.fill = originalFill; - this.stroke = originalStroke; - }, - - /** - * Prepare clipPath state and cache and draw it on instance's cache - * @param {CanvasRenderingContext2D} ctx - * @param {fabric.Object} clipPath - */ - _drawClipPath: function (ctx, clipPath) { - if (!clipPath) { return; } - // needed to setup a couple of variables - // path canvas gets overridden with this one. - // TODO find a better solution? - clipPath.canvas = this.canvas; - clipPath.shouldCache(); - clipPath._transformDone = true; - clipPath.renderCache({ forClipping: true }); - this.drawClipPathOnCache(ctx, clipPath); - }, - - /** - * Paint the cached copy of the object on the target context. - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - drawCacheOnCanvas: function(ctx) { - ctx.scale(1 / this.zoomX, 1 / this.zoomY); - ctx.drawImage(this._cacheCanvas, -this.cacheTranslationX, -this.cacheTranslationY); - }, - - /** - * Check if cache is dirty - * @param {Boolean} skipCanvas skip canvas checks because this object is painted - * on parent canvas. - */ - isCacheDirty: function(skipCanvas) { - if (this.isNotVisible()) { - return false; - } - if (this._cacheCanvas && !skipCanvas && this._updateCacheCanvas()) { - // in this case the context is already cleared. - return true; - } - else { - if (this.dirty || - (this.clipPath && this.clipPath.absolutePositioned) || - (this.statefullCache && this.hasStateChanged('cacheProperties')) - ) { - if (this._cacheCanvas && !skipCanvas) { - var width = this.cacheWidth / this.zoomX; - var height = this.cacheHeight / this.zoomY; - this._cacheContext.clearRect(-width / 2, -height / 2, width, height); - } - return true; - } - } - return false; - }, - - /** - * Draws a background for the object big as its untransformed dimensions - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderBackground: function(ctx) { - if (!this.backgroundColor) { - return; - } - var dim = this._getNonTransformedDimensions(); - ctx.fillStyle = this.backgroundColor; - - ctx.fillRect( - -dim.x / 2, - -dim.y / 2, - dim.x, - dim.y - ); - // if there is background color no other shadows - // should be casted - this._removeShadow(ctx); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _setOpacity: function(ctx) { - if (this.group && !this.group._transformDone) { - ctx.globalAlpha = this.getObjectOpacity(); - } - else { - ctx.globalAlpha *= this.opacity; - } - }, - - _setStrokeStyles: function(ctx, decl) { - var stroke = decl.stroke; - if (stroke) { - ctx.lineWidth = decl.strokeWidth; - ctx.lineCap = decl.strokeLineCap; - ctx.lineDashOffset = decl.strokeDashOffset; - ctx.lineJoin = decl.strokeLineJoin; - ctx.miterLimit = decl.strokeMiterLimit; - if (stroke.toLive) { - if (stroke.gradientUnits === 'percentage' || stroke.gradientTransform || stroke.patternTransform) { - // need to transform gradient in a pattern. - // this is a slow process. If you are hitting this codepath, and the object - // is not using caching, you should consider switching it on. - // we need a canvas as big as the current object caching canvas. - this._applyPatternForTransformedGradient(ctx, stroke); - } - else { - // is a simple gradient or pattern - ctx.strokeStyle = stroke.toLive(ctx, this); - this._applyPatternGradientTransform(ctx, stroke); - } - } - else { - // is a color - ctx.strokeStyle = decl.stroke; - } - } - }, - - _setFillStyles: function(ctx, decl) { - var fill = decl.fill; - if (fill) { - if (fill.toLive) { - ctx.fillStyle = fill.toLive(ctx, this); - this._applyPatternGradientTransform(ctx, decl.fill); - } - else { - ctx.fillStyle = fill; - } - } - }, - - _setClippingProperties: function(ctx) { - ctx.globalAlpha = 1; - ctx.strokeStyle = 'transparent'; - ctx.fillStyle = '#000000'; - }, - - /** - * @private - * Sets line dash - * @param {CanvasRenderingContext2D} ctx Context to set the dash line on - * @param {Array} dashArray array representing dashes - */ - _setLineDash: function(ctx, dashArray) { - if (!dashArray || dashArray.length === 0) { - return; - } - // Spec requires the concatenation of two copies the dash list when the number of elements is odd - if (1 & dashArray.length) { - dashArray.push.apply(dashArray, dashArray); - } - ctx.setLineDash(dashArray); - }, - - /** - * Renders controls and borders for the object - * the context here is not transformed - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Object} [styleOverride] properties to override the object style - */ - _renderControls: function(ctx, styleOverride) { - var vpt = this.getViewportTransform(), - matrix = this.calcTransformMatrix(), - options, drawBorders, drawControls; - styleOverride = styleOverride || { }; - drawBorders = typeof styleOverride.hasBorders !== 'undefined' ? styleOverride.hasBorders : this.hasBorders; - drawControls = typeof styleOverride.hasControls !== 'undefined' ? styleOverride.hasControls : this.hasControls; - matrix = fabric.util.multiplyTransformMatrices(vpt, matrix); - options = fabric.util.qrDecompose(matrix); - ctx.save(); - ctx.translate(options.translateX, options.translateY); - ctx.lineWidth = 1 * this.borderScaleFactor; - if (!this.group) { - ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1; - } - if (this.flipX) { - options.angle -= 180; - } - ctx.rotate(degreesToRadians(this.group ? options.angle : this.angle)); - if (styleOverride.forActiveSelection || this.group) { - drawBorders && this.drawBordersInGroup(ctx, options, styleOverride); - } - else { - drawBorders && this.drawBorders(ctx, styleOverride); - } - drawControls && this.drawControls(ctx, styleOverride); - ctx.restore(); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _setShadow: function(ctx) { - if (!this.shadow) { - return; - } - - var shadow = this.shadow, canvas = this.canvas, scaling, - multX = (canvas && canvas.viewportTransform[0]) || 1, - multY = (canvas && canvas.viewportTransform[3]) || 1; - if (shadow.nonScaling) { - scaling = { scaleX: 1, scaleY: 1 }; - } - else { - scaling = this.getObjectScaling(); - } - if (canvas && canvas._isRetinaScaling()) { - multX *= fabric.devicePixelRatio; - multY *= fabric.devicePixelRatio; - } - ctx.shadowColor = shadow.color; - ctx.shadowBlur = shadow.blur * fabric.browserShadowBlurConstant * - (multX + multY) * (scaling.scaleX + scaling.scaleY) / 4; - ctx.shadowOffsetX = shadow.offsetX * multX * scaling.scaleX; - ctx.shadowOffsetY = shadow.offsetY * multY * scaling.scaleY; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _removeShadow: function(ctx) { - if (!this.shadow) { - return; - } - - ctx.shadowColor = ''; - ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Object} filler fabric.Pattern or fabric.Gradient - * @return {Object} offset.offsetX offset for text rendering - * @return {Object} offset.offsetY offset for text rendering - */ - _applyPatternGradientTransform: function(ctx, filler) { - if (!filler || !filler.toLive) { - return { offsetX: 0, offsetY: 0 }; - } - var t = filler.gradientTransform || filler.patternTransform; - var offsetX = -this.width / 2 + filler.offsetX || 0, - offsetY = -this.height / 2 + filler.offsetY || 0; - - if (filler.gradientUnits === 'percentage') { - ctx.transform(this.width, 0, 0, this.height, offsetX, offsetY); - } - else { - ctx.transform(1, 0, 0, 1, offsetX, offsetY); - } - if (t) { - ctx.transform(t[0], t[1], t[2], t[3], t[4], t[5]); - } - return { offsetX: offsetX, offsetY: offsetY }; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderPaintInOrder: function(ctx) { - if (this.paintFirst === 'stroke') { - this._renderStroke(ctx); - this._renderFill(ctx); - } - else { - this._renderFill(ctx); - this._renderStroke(ctx); - } - }, - - /** - * @private - * function that actually render something on the context. - * empty here to allow Obects to work on tests to benchmark fabric functionalites - * not related to rendering - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function(/* ctx */) { - - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderFill: function(ctx) { - if (!this.fill) { - return; - } - - ctx.save(); - this._setFillStyles(ctx, this); - if (this.fillRule === 'evenodd') { - ctx.fill('evenodd'); - } - else { - ctx.fill(); - } - ctx.restore(); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderStroke: function(ctx) { - if (!this.stroke || this.strokeWidth === 0) { - return; - } - - if (this.shadow && !this.shadow.affectStroke) { - this._removeShadow(ctx); - } - - ctx.save(); - if (this.strokeUniform && this.group) { - var scaling = this.getObjectScaling(); - ctx.scale(1 / scaling.scaleX, 1 / scaling.scaleY); - } - else if (this.strokeUniform) { - ctx.scale(1 / this.scaleX, 1 / this.scaleY); - } - this._setLineDash(ctx, this.strokeDashArray); - this._setStrokeStyles(ctx, this); - ctx.stroke(); - ctx.restore(); - }, - - /** - * This function try to patch the missing gradientTransform on canvas gradients. - * transforming a context to transform the gradient, is going to transform the stroke too. - * we want to transform the gradient but not the stroke operation, so we create - * a transformed gradient on a pattern and then we use the pattern instead of the gradient. - * this method has drwabacks: is slow, is in low resolution, needs a patch for when the size - * is limited. - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {fabric.Gradient} filler a fabric gradient instance - */ - _applyPatternForTransformedGradient: function(ctx, filler) { - var dims = this._limitCacheSize(this._getCacheCanvasDimensions()), - pCanvas = fabric.util.createCanvasElement(), pCtx, retinaScaling = this.canvas.getRetinaScaling(), - width = dims.x / this.scaleX / retinaScaling, height = dims.y / this.scaleY / retinaScaling; - pCanvas.width = width; - pCanvas.height = height; - pCtx = pCanvas.getContext('2d'); - pCtx.beginPath(); pCtx.moveTo(0, 0); pCtx.lineTo(width, 0); pCtx.lineTo(width, height); - pCtx.lineTo(0, height); pCtx.closePath(); - pCtx.translate(width / 2, height / 2); - pCtx.scale( - dims.zoomX / this.scaleX / retinaScaling, - dims.zoomY / this.scaleY / retinaScaling - ); - this._applyPatternGradientTransform(pCtx, filler); - pCtx.fillStyle = filler.toLive(ctx); - pCtx.fill(); - ctx.translate(-this.width / 2 - this.strokeWidth / 2, -this.height / 2 - this.strokeWidth / 2); - ctx.scale( - retinaScaling * this.scaleX / dims.zoomX, - retinaScaling * this.scaleY / dims.zoomY - ); - ctx.strokeStyle = pCtx.createPattern(pCanvas, 'no-repeat'); - }, - - /** - * This function is an helper for svg import. it returns the center of the object in the svg - * untransformed coordinates - * @private - * @return {Object} center point from element coordinates - */ - _findCenterFromElement: function() { - return { x: this.left + this.width / 2, y: this.top + this.height / 2 }; - }, - - /** - * This function is an helper for svg import. it decompose the transformMatrix - * and assign properties to object. - * untransformed coordinates - * @private - * @chainable - */ - _assignTransformMatrixProps: function() { - if (this.transformMatrix) { - var options = fabric.util.qrDecompose(this.transformMatrix); - this.flipX = false; - this.flipY = false; - this.set('scaleX', options.scaleX); - this.set('scaleY', options.scaleY); - this.angle = options.angle; - this.skewX = options.skewX; - this.skewY = 0; - } - }, - - /** - * This function is an helper for svg import. it removes the transform matrix - * and set to object properties that fabricjs can handle - * @private - * @param {Object} preserveAspectRatioOptions - * @return {thisArg} - */ - _removeTransformMatrix: function(preserveAspectRatioOptions) { - var center = this._findCenterFromElement(); - if (this.transformMatrix) { - this._assignTransformMatrixProps(); - center = fabric.util.transformPoint(center, this.transformMatrix); - } - this.transformMatrix = null; - if (preserveAspectRatioOptions) { - this.scaleX *= preserveAspectRatioOptions.scaleX; - this.scaleY *= preserveAspectRatioOptions.scaleY; - this.cropX = preserveAspectRatioOptions.cropX; - this.cropY = preserveAspectRatioOptions.cropY; - center.x += preserveAspectRatioOptions.offsetLeft; - center.y += preserveAspectRatioOptions.offsetTop; - this.width = preserveAspectRatioOptions.width; - this.height = preserveAspectRatioOptions.height; - } - this.setPositionByOrigin(center, 'center', 'center'); - }, - - /** - * Clones an instance, using a callback method will work for every object. - * @param {Function} callback Callback is invoked with a clone as a first argument - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - */ - clone: function(callback, propertiesToInclude) { - var objectForm = this.toObject(propertiesToInclude); - if (this.constructor.fromObject) { - this.constructor.fromObject(objectForm, callback); - } - else { - fabric.Object._fromObject('Object', objectForm, callback); - } - }, - - /** - * Creates an instance of fabric.Image out of an object - * makes use of toCanvasElement. - * Once this method was based on toDataUrl and loadImage, so it also had a quality - * and format option. toCanvasElement is faster and produce no loss of quality. - * If you need to get a real Jpeg or Png from an object, using toDataURL is the right way to do it. - * toCanvasElement and then toBlob from the obtained canvas is also a good option. - * This method is sync now, but still support the callback because we did not want to break. - * When fabricJS 5.0 will be planned, this will probably be changed to not have a callback. - * @param {Function} callback callback, invoked with an instance as a first argument - * @param {Object} [options] for clone as image, passed to toDataURL - * @param {Number} [options.multiplier=1] Multiplier to scale by - * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 - * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 - * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 - * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 - * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 - * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 - * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 - * @return {fabric.Object} thisArg - */ - cloneAsImage: function(callback, options) { - var canvasEl = this.toCanvasElement(options); - if (callback) { - callback(new fabric.Image(canvasEl)); - } - return this; - }, - - /** - * Converts an object into a HTMLCanvas element - * @param {Object} options Options object - * @param {Number} [options.multiplier=1] Multiplier to scale by - * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 - * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 - * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 - * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 - * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 - * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 - * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 - * @return {HTMLCanvasElement} Returns DOM element with the fabric.Object - */ - toCanvasElement: function(options) { - options || (options = { }); - - var utils = fabric.util, origParams = utils.saveObjectTransform(this), - originalGroup = this.group, - originalShadow = this.shadow, abs = Math.abs, - multiplier = (options.multiplier || 1) * (options.enableRetinaScaling ? fabric.devicePixelRatio : 1); - delete this.group; - if (options.withoutTransform) { - utils.resetObjectTransform(this); - } - if (options.withoutShadow) { - this.shadow = null; - } - - var el = fabric.util.createCanvasElement(), - // skip canvas zoom and calculate with setCoords now. - boundingRect = this.getBoundingRect(true, true), - shadow = this.shadow, scaling, - shadowOffset = { x: 0, y: 0 }, shadowBlur, - width, height; - - if (shadow) { - shadowBlur = shadow.blur; - if (shadow.nonScaling) { - scaling = { scaleX: 1, scaleY: 1 }; - } - else { - scaling = this.getObjectScaling(); - } - // consider non scaling shadow. - shadowOffset.x = 2 * Math.round(abs(shadow.offsetX) + shadowBlur) * (abs(scaling.scaleX)); - shadowOffset.y = 2 * Math.round(abs(shadow.offsetY) + shadowBlur) * (abs(scaling.scaleY)); - } - width = boundingRect.width + shadowOffset.x; - height = boundingRect.height + shadowOffset.y; - // if the current width/height is not an integer - // we need to make it so. - el.width = Math.ceil(width); - el.height = Math.ceil(height); - var canvas = new fabric.StaticCanvas(el, { - enableRetinaScaling: false, - renderOnAddRemove: false, - skipOffscreen: false, - }); - if (options.format === 'jpeg') { - canvas.backgroundColor = '#fff'; - } - this.setPositionByOrigin(new fabric.Point(canvas.width / 2, canvas.height / 2), 'center', 'center'); - - var originalCanvas = this.canvas; - canvas.add(this); - var canvasEl = canvas.toCanvasElement(multiplier || 1, options); - this.shadow = originalShadow; - this.set('canvas', originalCanvas); - if (originalGroup) { - this.group = originalGroup; - } - this.set(origParams).setCoords(); - // canvas.dispose will call image.dispose that will nullify the elements - // since this canvas is a simple element for the process, we remove references - // to objects in this way in order to avoid object trashing. - canvas._objects = []; - canvas.dispose(); - canvas = null; - - return canvasEl; - }, - - /** - * Converts an object into a data-url-like string - * @param {Object} options Options object - * @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png" - * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg. - * @param {Number} [options.multiplier=1] Multiplier to scale by - * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 - * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 - * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 - * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 - * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 - * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 - * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 - * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format - */ - toDataURL: function(options) { - options || (options = { }); - return fabric.util.toDataURL(this.toCanvasElement(options), options.format || 'png', options.quality || 1); - }, - - /** - * Returns true if specified type is identical to the type of an instance - * @param {String} type Type to check against - * @return {Boolean} - */ - isType: function(type) { - return this.type === type; - }, - - /** - * Returns complexity of an instance - * @return {Number} complexity of this instance (is 1 unless subclassed) - */ - complexity: function() { - return 1; - }, - - /** - * Returns a JSON representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} JSON - */ - toJSON: function(propertiesToInclude) { - // delegate, not alias - return this.toObject(propertiesToInclude); - }, - - /** - * Sets "angle" of an instance with centered rotation - * @param {Number} angle Angle value (in degrees) - * @return {fabric.Object} thisArg - * @chainable - */ - rotate: function(angle) { - var shouldCenterOrigin = (this.originX !== 'center' || this.originY !== 'center') && this.centeredRotation; - - if (shouldCenterOrigin) { - this._setOriginToCenter(); - } - - this.set('angle', angle); - - if (shouldCenterOrigin) { - this._resetOrigin(); - } - - return this; - }, - - /** - * Centers object horizontally on canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - centerH: function () { - this.canvas && this.canvas.centerObjectH(this); - return this; - }, - - /** - * Centers object horizontally on current viewport of canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - viewportCenterH: function () { - this.canvas && this.canvas.viewportCenterObjectH(this); - return this; - }, - - /** - * Centers object vertically on canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - centerV: function () { - this.canvas && this.canvas.centerObjectV(this); - return this; - }, - - /** - * Centers object vertically on current viewport of canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - viewportCenterV: function () { - this.canvas && this.canvas.viewportCenterObjectV(this); - return this; - }, - - /** - * Centers object vertically and horizontally on canvas to which is was added last - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - center: function () { - this.canvas && this.canvas.centerObject(this); - return this; - }, - - /** - * Centers object on current viewport of canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - viewportCenter: function () { - this.canvas && this.canvas.viewportCenterObject(this); - return this; - }, - - /** - * Returns coordinates of a pointer relative to an object - * @param {Event} e Event to operate upon - * @param {Object} [pointer] Pointer to operate upon (instead of event) - * @return {Object} Coordinates of a pointer (x, y) - */ - getLocalPointer: function(e, pointer) { - pointer = pointer || this.canvas.getPointer(e); - var pClicked = new fabric.Point(pointer.x, pointer.y), - objectLeftTop = this._getLeftTopCoords(); - if (this.angle) { - pClicked = fabric.util.rotatePoint( - pClicked, objectLeftTop, degreesToRadians(-this.angle)); - } - return { - x: pClicked.x - objectLeftTop.x, - y: pClicked.y - objectLeftTop.y - }; - }, - - /** - * Sets canvas globalCompositeOperation for specific object - * custom composition operation for the particular object can be specified using globalCompositeOperation property - * @param {CanvasRenderingContext2D} ctx Rendering canvas context - */ - _setupCompositeOperation: function (ctx) { - if (this.globalCompositeOperation) { - ctx.globalCompositeOperation = this.globalCompositeOperation; - } - }, - - /** - * cancel instance's running animations - * override if necessary to dispose artifacts such as `clipPath` - */ - dispose: function () { - if (fabric.runningAnimations) { - fabric.runningAnimations.cancelByTarget(this); - } - } - }); - - fabric.util.createAccessors && fabric.util.createAccessors(fabric.Object); - - extend(fabric.Object.prototype, fabric.Observable); - - /** - * Defines the number of fraction digits to use when serializing object values. - * You can use it to increase/decrease precision of such values like left, top, scaleX, scaleY, etc. - * @static - * @memberOf fabric.Object - * @constant - * @type Number - */ - fabric.Object.NUM_FRACTION_DIGITS = 2; - - /** - * Defines which properties should be enlivened from the object passed to {@link fabric.Object._fromObject} - * @static - * @memberOf fabric.Object - * @constant - * @type string[] - */ - fabric.Object.ENLIVEN_PROPS = ['clipPath']; - - fabric.Object._fromObject = function(className, object, callback, extraParam) { - var klass = fabric[className]; - object = clone(object, true); - fabric.util.enlivenPatterns([object.fill, object.stroke], function(patterns) { - if (typeof patterns[0] !== 'undefined') { - object.fill = patterns[0]; - } - if (typeof patterns[1] !== 'undefined') { - object.stroke = patterns[1]; - } - fabric.util.enlivenObjectEnlivables(object, object, function () { - var instance = extraParam ? new klass(object[extraParam], object) : new klass(object); - callback && callback(instance); - }); - }); - }; - - /** - * Unique id used internally when creating SVG elements - * @static - * @memberOf fabric.Object - * @type Number - */ - fabric.Object.__uid = 0; -})(typeof exports !== 'undefined' ? exports : this); - - -(function() { - - var degreesToRadians = fabric.util.degreesToRadians, - originXOffset = { - left: -0.5, - center: 0, - right: 0.5 - }, - originYOffset = { - top: -0.5, - center: 0, - bottom: 0.5 - }; - - fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { - - /** - * Translates the coordinates from a set of origin to another (based on the object's dimensions) - * @param {fabric.Point} point The point which corresponds to the originX and originY params - * @param {String} fromOriginX Horizontal origin: 'left', 'center' or 'right' - * @param {String} fromOriginY Vertical origin: 'top', 'center' or 'bottom' - * @param {String} toOriginX Horizontal origin: 'left', 'center' or 'right' - * @param {String} toOriginY Vertical origin: 'top', 'center' or 'bottom' - * @return {fabric.Point} - */ - translateToGivenOrigin: function(point, fromOriginX, fromOriginY, toOriginX, toOriginY) { - var x = point.x, - y = point.y, - offsetX, offsetY, dim; - - if (typeof fromOriginX === 'string') { - fromOriginX = originXOffset[fromOriginX]; - } - else { - fromOriginX -= 0.5; - } - - if (typeof toOriginX === 'string') { - toOriginX = originXOffset[toOriginX]; - } - else { - toOriginX -= 0.5; - } - - offsetX = toOriginX - fromOriginX; - - if (typeof fromOriginY === 'string') { - fromOriginY = originYOffset[fromOriginY]; - } - else { - fromOriginY -= 0.5; - } - - if (typeof toOriginY === 'string') { - toOriginY = originYOffset[toOriginY]; - } - else { - toOriginY -= 0.5; - } - - offsetY = toOriginY - fromOriginY; - - if (offsetX || offsetY) { - dim = this._getTransformedDimensions(); - x = point.x + offsetX * dim.x; - y = point.y + offsetY * dim.y; - } - - return new fabric.Point(x, y); - }, - - /** - * Translates the coordinates from origin to center coordinates (based on the object's dimensions) - * @param {fabric.Point} point The point which corresponds to the originX and originY params - * @param {String} originX Horizontal origin: 'left', 'center' or 'right' - * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {fabric.Point} - */ - translateToCenterPoint: function(point, originX, originY) { - var p = this.translateToGivenOrigin(point, originX, originY, 'center', 'center'); - if (this.angle) { - return fabric.util.rotatePoint(p, point, degreesToRadians(this.angle)); - } - return p; - }, - - /** - * Translates the coordinates from center to origin coordinates (based on the object's dimensions) - * @param {fabric.Point} center The point which corresponds to center of the object - * @param {String} originX Horizontal origin: 'left', 'center' or 'right' - * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {fabric.Point} - */ - translateToOriginPoint: function(center, originX, originY) { - var p = this.translateToGivenOrigin(center, 'center', 'center', originX, originY); - if (this.angle) { - return fabric.util.rotatePoint(p, center, degreesToRadians(this.angle)); - } - return p; - }, - - /** - * Returns the real center coordinates of the object - * @return {fabric.Point} - */ - getCenterPoint: function() { - var leftTop = new fabric.Point(this.left, this.top); - return this.translateToCenterPoint(leftTop, this.originX, this.originY); - }, - - /** - * Returns the coordinates of the object based on center coordinates - * @param {fabric.Point} point The point which corresponds to the originX and originY params - * @return {fabric.Point} - */ - // getOriginPoint: function(center) { - // return this.translateToOriginPoint(center, this.originX, this.originY); - // }, - - /** - * Returns the coordinates of the object as if it has a different origin - * @param {String} originX Horizontal origin: 'left', 'center' or 'right' - * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {fabric.Point} - */ - getPointByOrigin: function(originX, originY) { - var center = this.getCenterPoint(); - return this.translateToOriginPoint(center, originX, originY); - }, - - /** - * Returns the point in local coordinates - * @param {fabric.Point} point The point relative to the global coordinate system - * @param {String} originX Horizontal origin: 'left', 'center' or 'right' - * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {fabric.Point} - */ - toLocalPoint: function(point, originX, originY) { - var center = this.getCenterPoint(), - p, p2; - - if (typeof originX !== 'undefined' && typeof originY !== 'undefined' ) { - p = this.translateToGivenOrigin(center, 'center', 'center', originX, originY); - } - else { - p = new fabric.Point(this.left, this.top); - } - - p2 = new fabric.Point(point.x, point.y); - if (this.angle) { - p2 = fabric.util.rotatePoint(p2, center, -degreesToRadians(this.angle)); - } - return p2.subtractEquals(p); - }, - - /** - * Returns the point in global coordinates - * @param {fabric.Point} The point relative to the local coordinate system - * @return {fabric.Point} - */ - // toGlobalPoint: function(point) { - // return fabric.util.rotatePoint(point, this.getCenterPoint(), degreesToRadians(this.angle)).addEquals(new fabric.Point(this.left, this.top)); - // }, - - /** - * Sets the position of the object taking into consideration the object's origin - * @param {fabric.Point} pos The new position of the object - * @param {String} originX Horizontal origin: 'left', 'center' or 'right' - * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {void} - */ - setPositionByOrigin: function(pos, originX, originY) { - var center = this.translateToCenterPoint(pos, originX, originY), - position = this.translateToOriginPoint(center, this.originX, this.originY); - this.set('left', position.x); - this.set('top', position.y); - }, - - /** - * @param {String} to One of 'left', 'center', 'right' - */ - adjustPosition: function(to) { - var angle = degreesToRadians(this.angle), - hypotFull = this.getScaledWidth(), - xFull = fabric.util.cos(angle) * hypotFull, - yFull = fabric.util.sin(angle) * hypotFull, - offsetFrom, offsetTo; - - //TODO: this function does not consider mixed situation like top, center. - if (typeof this.originX === 'string') { - offsetFrom = originXOffset[this.originX]; - } - else { - offsetFrom = this.originX - 0.5; - } - if (typeof to === 'string') { - offsetTo = originXOffset[to]; - } - else { - offsetTo = to - 0.5; - } - this.left += xFull * (offsetTo - offsetFrom); - this.top += yFull * (offsetTo - offsetFrom); - this.setCoords(); - this.originX = to; - }, - - /** - * Sets the origin/position of the object to it's center point - * @private - * @return {void} - */ - _setOriginToCenter: function() { - this._originalOriginX = this.originX; - this._originalOriginY = this.originY; - - var center = this.getCenterPoint(); - - this.originX = 'center'; - this.originY = 'center'; - - this.left = center.x; - this.top = center.y; - }, - - /** - * Resets the origin/position of the object to it's original origin - * @private - * @return {void} - */ - _resetOrigin: function() { - var originPoint = this.translateToOriginPoint( - this.getCenterPoint(), - this._originalOriginX, - this._originalOriginY); - - this.originX = this._originalOriginX; - this.originY = this._originalOriginY; - - this.left = originPoint.x; - this.top = originPoint.y; - - this._originalOriginX = null; - this._originalOriginY = null; - }, - - /** - * @private - */ - _getLeftTopCoords: function() { - return this.translateToOriginPoint(this.getCenterPoint(), 'left', 'top'); - }, - }); - -})(); - - -(function() { - - function arrayFromCoords(coords) { - return [ - new fabric.Point(coords.tl.x, coords.tl.y), - new fabric.Point(coords.tr.x, coords.tr.y), - new fabric.Point(coords.br.x, coords.br.y), - new fabric.Point(coords.bl.x, coords.bl.y) - ]; - } - - var util = fabric.util, - degreesToRadians = util.degreesToRadians, - multiplyMatrices = util.multiplyTransformMatrices, - transformPoint = util.transformPoint; - - util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { - - /** - * Describe object's corner position in canvas element coordinates. - * properties are depending on control keys and padding the main controls. - * each property is an object with x, y and corner. - * The `corner` property contains in a similar manner the 4 points of the - * interactive area of the corner. - * The coordinates depends from the controls positionHandler and are used - * to draw and locate controls - * @memberOf fabric.Object.prototype - */ - oCoords: null, - - /** - * Describe object's corner position in canvas object absolute coordinates - * properties are tl,tr,bl,br and describe the four main corner. - * each property is an object with x, y, instance of Fabric.Point. - * The coordinates depends from this properties: width, height, scaleX, scaleY - * skewX, skewY, angle, strokeWidth, top, left. - * Those coordinates are useful to understand where an object is. They get updated - * with oCoords but they do not need to be updated when zoom or panning change. - * The coordinates get updated with @method setCoords. - * You can calculate them without updating with @method calcACoords(); - * @memberOf fabric.Object.prototype - */ - aCoords: null, - - /** - * Describe object's corner position in canvas element coordinates. - * includes padding. Used of object detection. - * set and refreshed with setCoords. - * @memberOf fabric.Object.prototype - */ - lineCoords: null, - - /** - * storage for object transform matrix - */ - ownMatrixCache: null, - - /** - * storage for object full transform matrix - */ - matrixCache: null, - - /** - * custom controls interface - * controls are added by default_controls.js - */ - controls: { }, - - /** - * return correct set of coordinates for intersection - * this will return either aCoords or lineCoords. - * @param {Boolean} absolute will return aCoords if true or lineCoords - * @return {Object} {tl, tr, br, bl} points - */ - _getCoords: function(absolute, calculate) { - if (calculate) { - return (absolute ? this.calcACoords() : this.calcLineCoords()); - } - if (!this.aCoords || !this.lineCoords) { - this.setCoords(true); - } - return (absolute ? this.aCoords : this.lineCoords); - }, - - /** - * return correct set of coordinates for intersection - * this will return either aCoords or lineCoords. - * The coords are returned in an array. - * @return {Array} [tl, tr, br, bl] of points - */ - getCoords: function(absolute, calculate) { - return arrayFromCoords(this._getCoords(absolute, calculate)); - }, - - /** - * Checks if object intersects with an area formed by 2 points - * @param {Object} pointTL top-left point of area - * @param {Object} pointBR bottom-right point of area - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object intersects with an area formed by 2 points - */ - intersectsWithRect: function(pointTL, pointBR, absolute, calculate) { - var coords = this.getCoords(absolute, calculate), - intersection = fabric.Intersection.intersectPolygonRectangle( - coords, - pointTL, - pointBR - ); - return intersection.status === 'Intersection'; - }, - - /** - * Checks if object intersects with another object - * @param {Object} other Object to test - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object intersects with another object - */ - intersectsWithObject: function(other, absolute, calculate) { - var intersection = fabric.Intersection.intersectPolygonPolygon( - this.getCoords(absolute, calculate), - other.getCoords(absolute, calculate) - ); - - return intersection.status === 'Intersection' - || other.isContainedWithinObject(this, absolute, calculate) - || this.isContainedWithinObject(other, absolute, calculate); - }, - - /** - * Checks if object is fully contained within area of another object - * @param {Object} other Object to test - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object is fully contained within area of another object - */ - isContainedWithinObject: function(other, absolute, calculate) { - var points = this.getCoords(absolute, calculate), - otherCoords = absolute ? other.aCoords : other.lineCoords, - i = 0, lines = other._getImageLines(otherCoords); - for (; i < 4; i++) { - if (!other.containsPoint(points[i], lines)) { - return false; - } - } - return true; - }, - - /** - * Checks if object is fully contained within area formed by 2 points - * @param {Object} pointTL top-left point of area - * @param {Object} pointBR bottom-right point of area - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object is fully contained within area formed by 2 points - */ - isContainedWithinRect: function(pointTL, pointBR, absolute, calculate) { - var boundingRect = this.getBoundingRect(absolute, calculate); - - return ( - boundingRect.left >= pointTL.x && - boundingRect.left + boundingRect.width <= pointBR.x && - boundingRect.top >= pointTL.y && - boundingRect.top + boundingRect.height <= pointBR.y - ); - }, - - /** - * Checks if point is inside the object - * @param {fabric.Point} point Point to check against - * @param {Object} [lines] object returned from @method _getImageLines - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if point is inside the object - */ - containsPoint: function(point, lines, absolute, calculate) { - var coords = this._getCoords(absolute, calculate), - lines = lines || this._getImageLines(coords), - xPoints = this._findCrossPoints(point, lines); - // if xPoints is odd then point is inside the object - return (xPoints !== 0 && xPoints % 2 === 1); - }, - - /** - * Checks if object is contained within the canvas with current viewportTransform - * the check is done stopping at first point that appears on screen - * @param {Boolean} [calculate] use coordinates of current position instead of .aCoords - * @return {Boolean} true if object is fully or partially contained within canvas - */ - isOnScreen: function(calculate) { - if (!this.canvas) { - return false; - } - var pointTL = this.canvas.vptCoords.tl, pointBR = this.canvas.vptCoords.br; - var points = this.getCoords(true, calculate); - // if some point is on screen, the object is on screen. - if (points.some(function(point) { - return point.x <= pointBR.x && point.x >= pointTL.x && - point.y <= pointBR.y && point.y >= pointTL.y; - })) { - return true; - } - // no points on screen, check intersection with absolute coordinates - if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) { - return true; - } - return this._containsCenterOfCanvas(pointTL, pointBR, calculate); - }, - - /** - * Checks if the object contains the midpoint between canvas extremities - * Does not make sense outside the context of isOnScreen and isPartiallyOnScreen - * @private - * @param {Fabric.Point} pointTL Top Left point - * @param {Fabric.Point} pointBR Top Right point - * @param {Boolean} calculate use coordinates of current position instead of .oCoords - * @return {Boolean} true if the object contains the point - */ - _containsCenterOfCanvas: function(pointTL, pointBR, calculate) { - // worst case scenario the object is so big that contains the screen - var centerPoint = { x: (pointTL.x + pointBR.x) / 2, y: (pointTL.y + pointBR.y) / 2 }; - if (this.containsPoint(centerPoint, null, true, calculate)) { - return true; - } - return false; - }, - - /** - * Checks if object is partially contained within the canvas with current viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object is partially contained within canvas - */ - isPartiallyOnScreen: function(calculate) { - if (!this.canvas) { - return false; - } - var pointTL = this.canvas.vptCoords.tl, pointBR = this.canvas.vptCoords.br; - if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) { - return true; - } - var allPointsAreOutside = this.getCoords(true, calculate).every(function(point) { - return (point.x >= pointBR.x || point.x <= pointTL.x) && - (point.y >= pointBR.y || point.y <= pointTL.y); - }); - return allPointsAreOutside && this._containsCenterOfCanvas(pointTL, pointBR, calculate); - }, - - /** - * Method that returns an object with the object edges in it, given the coordinates of the corners - * @private - * @param {Object} oCoords Coordinates of the object corners - */ - _getImageLines: function(oCoords) { - - var lines = { - topline: { - o: oCoords.tl, - d: oCoords.tr - }, - rightline: { - o: oCoords.tr, - d: oCoords.br - }, - bottomline: { - o: oCoords.br, - d: oCoords.bl - }, - leftline: { - o: oCoords.bl, - d: oCoords.tl - } - }; - - // // debugging - // if (this.canvas.contextTop) { - // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2); - // } - - return lines; - }, - - /** - * Helper method to determine how many cross points are between the 4 object edges - * and the horizontal line determined by a point on canvas - * @private - * @param {fabric.Point} point Point to check - * @param {Object} lines Coordinates of the object being evaluated - */ - // remove yi, not used but left code here just in case. - _findCrossPoints: function(point, lines) { - var b1, b2, a1, a2, xi, // yi, - xcount = 0, - iLine; - - for (var lineKey in lines) { - iLine = lines[lineKey]; - // optimisation 1: line below point. no cross - if ((iLine.o.y < point.y) && (iLine.d.y < point.y)) { - continue; - } - // optimisation 2: line above point. no cross - if ((iLine.o.y >= point.y) && (iLine.d.y >= point.y)) { - continue; - } - // optimisation 3: vertical line case - if ((iLine.o.x === iLine.d.x) && (iLine.o.x >= point.x)) { - xi = iLine.o.x; - // yi = point.y; - } - // calculate the intersection point - else { - b1 = 0; - b2 = (iLine.d.y - iLine.o.y) / (iLine.d.x - iLine.o.x); - a1 = point.y - b1 * point.x; - a2 = iLine.o.y - b2 * iLine.o.x; - - xi = -(a1 - a2) / (b1 - b2); - // yi = a1 + b1 * xi; - } - // dont count xi < point.x cases - if (xi >= point.x) { - xcount += 1; - } - // optimisation 4: specific for square images - if (xcount === 2) { - break; - } - } - return xcount; - }, - - /** - * Returns coordinates of object's bounding rectangle (left, top, width, height) - * the box is intended as aligned to axis of canvas. - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords / .aCoords - * @return {Object} Object with left, top, width, height properties - */ - getBoundingRect: function(absolute, calculate) { - var coords = this.getCoords(absolute, calculate); - return util.makeBoundingBoxFromPoints(coords); - }, - - /** - * Returns width of an object's bounding box counting transformations - * before 2.0 it was named getWidth(); - * @return {Number} width value - */ - getScaledWidth: function() { - return this._getTransformedDimensions().x; - }, - - /** - * Returns height of an object bounding box counting transformations - * before 2.0 it was named getHeight(); - * @return {Number} height value - */ - getScaledHeight: function() { - return this._getTransformedDimensions().y; - }, - - /** - * Makes sure the scale is valid and modifies it if necessary - * @private - * @param {Number} value - * @return {Number} - */ - _constrainScale: function(value) { - if (Math.abs(value) < this.minScaleLimit) { - if (value < 0) { - return -this.minScaleLimit; - } - else { - return this.minScaleLimit; - } - } - else if (value === 0) { - return 0.0001; - } - return value; - }, - - /** - * Scales an object (equally by x and y) - * @param {Number} value Scale factor - * @return {fabric.Object} thisArg - * @chainable - */ - scale: function(value) { - this._set('scaleX', value); - this._set('scaleY', value); - return this.setCoords(); - }, - - /** - * Scales an object to a given width, with respect to bounding box (scaling by x/y equally) - * @param {Number} value New width value - * @param {Boolean} absolute ignore viewport - * @return {fabric.Object} thisArg - * @chainable - */ - scaleToWidth: function(value, absolute) { - // adjust to bounding rect factor so that rotated shapes would fit as well - var boundingRectFactor = this.getBoundingRect(absolute).width / this.getScaledWidth(); - return this.scale(value / this.width / boundingRectFactor); - }, - - /** - * Scales an object to a given height, with respect to bounding box (scaling by x/y equally) - * @param {Number} value New height value - * @param {Boolean} absolute ignore viewport - * @return {fabric.Object} thisArg - * @chainable - */ - scaleToHeight: function(value, absolute) { - // adjust to bounding rect factor so that rotated shapes would fit as well - var boundingRectFactor = this.getBoundingRect(absolute).height / this.getScaledHeight(); - return this.scale(value / this.height / boundingRectFactor); - }, - - calcLineCoords: function() { - var vpt = this.getViewportTransform(), - padding = this.padding, angle = degreesToRadians(this.angle), - cos = util.cos(angle), sin = util.sin(angle), - cosP = cos * padding, sinP = sin * padding, cosPSinP = cosP + sinP, - cosPMinusSinP = cosP - sinP, aCoords = this.calcACoords(); - - var lineCoords = { - tl: transformPoint(aCoords.tl, vpt), - tr: transformPoint(aCoords.tr, vpt), - bl: transformPoint(aCoords.bl, vpt), - br: transformPoint(aCoords.br, vpt), - }; - - if (padding) { - lineCoords.tl.x -= cosPMinusSinP; - lineCoords.tl.y -= cosPSinP; - lineCoords.tr.x += cosPSinP; - lineCoords.tr.y -= cosPMinusSinP; - lineCoords.bl.x -= cosPSinP; - lineCoords.bl.y += cosPMinusSinP; - lineCoords.br.x += cosPMinusSinP; - lineCoords.br.y += cosPSinP; - } - - return lineCoords; - }, - - calcOCoords: function() { - var rotateMatrix = this._calcRotateMatrix(), - translateMatrix = this._calcTranslateMatrix(), - vpt = this.getViewportTransform(), - startMatrix = multiplyMatrices(vpt, translateMatrix), - finalMatrix = multiplyMatrices(startMatrix, rotateMatrix), - finalMatrix = multiplyMatrices(finalMatrix, [1 / vpt[0], 0, 0, 1 / vpt[3], 0, 0]), - dim = this._calculateCurrentDimensions(), - coords = {}; - this.forEachControl(function(control, key, fabricObject) { - coords[key] = control.positionHandler(dim, finalMatrix, fabricObject); - }); - - // debug code - // var canvas = this.canvas; - // setTimeout(function() { - // canvas.contextTop.clearRect(0, 0, 700, 700); - // canvas.contextTop.fillStyle = 'green'; - // Object.keys(coords).forEach(function(key) { - // var control = coords[key]; - // canvas.contextTop.fillRect(control.x, control.y, 3, 3); - // }); - // }, 50); - return coords; - }, - - calcACoords: function() { - var rotateMatrix = this._calcRotateMatrix(), - translateMatrix = this._calcTranslateMatrix(), - finalMatrix = multiplyMatrices(translateMatrix, rotateMatrix), - dim = this._getTransformedDimensions(), - w = dim.x / 2, h = dim.y / 2; - return { - // corners - tl: transformPoint({ x: -w, y: -h }, finalMatrix), - tr: transformPoint({ x: w, y: -h }, finalMatrix), - bl: transformPoint({ x: -w, y: h }, finalMatrix), - br: transformPoint({ x: w, y: h }, finalMatrix) - }; - }, - - /** - * Sets corner and controls position coordinates based on current angle, width and height, left and top. - * oCoords are used to find the corners - * aCoords are used to quickly find an object on the canvas - * lineCoords are used to quickly find object during pointer events. - * See {@link https://github.com/fabricjs/fabric.js/wiki/When-to-call-setCoords} and {@link http://fabricjs.com/fabric-gotchas} - * - * @param {Boolean} [skipCorners] skip calculation of oCoords. - * @return {fabric.Object} thisArg - * @chainable - */ - setCoords: function(skipCorners) { - this.aCoords = this.calcACoords(); - // in case we are in a group, for how the inner group target check works, - // lineCoords are exactly aCoords. Since the vpt gets absorbed by the normalized pointer. - this.lineCoords = this.group ? this.aCoords : this.calcLineCoords(); - if (skipCorners) { - return this; - } - // set coordinates of the draggable boxes in the corners used to scale/rotate the image - this.oCoords = this.calcOCoords(); - this._setCornerCoords && this._setCornerCoords(); - return this; - }, - - /** - * calculate rotation matrix of an object - * @return {Array} rotation matrix for the object - */ - _calcRotateMatrix: function() { - return util.calcRotateMatrix(this); - }, - - /** - * calculate the translation matrix for an object transform - * @return {Array} rotation matrix for the object - */ - _calcTranslateMatrix: function() { - var center = this.getCenterPoint(); - return [1, 0, 0, 1, center.x, center.y]; - }, - - transformMatrixKey: function(skipGroup) { - var sep = '_', prefix = ''; - if (!skipGroup && this.group) { - prefix = this.group.transformMatrixKey(skipGroup) + sep; - }; - return prefix + this.top + sep + this.left + sep + this.scaleX + sep + this.scaleY + - sep + this.skewX + sep + this.skewY + sep + this.angle + sep + this.originX + sep + this.originY + - sep + this.width + sep + this.height + sep + this.strokeWidth + this.flipX + this.flipY; - }, - - /** - * calculate transform matrix that represents the current transformations from the - * object's properties. - * @param {Boolean} [skipGroup] return transform matrix for object not counting parent transformations - * There are some situation in which this is useful to avoid the fake rotation. - * @return {Array} transform matrix for the object - */ - calcTransformMatrix: function(skipGroup) { - var matrix = this.calcOwnMatrix(); - if (skipGroup || !this.group) { - return matrix; - } - var key = this.transformMatrixKey(skipGroup), cache = this.matrixCache || (this.matrixCache = {}); - if (cache.key === key) { - return cache.value; - } - if (this.group) { - matrix = multiplyMatrices(this.group.calcTransformMatrix(false), matrix); - } - cache.key = key; - cache.value = matrix; - return matrix; - }, - - /** - * calculate transform matrix that represents the current transformations from the - * object's properties, this matrix does not include the group transformation - * @return {Array} transform matrix for the object - */ - calcOwnMatrix: function() { - var key = this.transformMatrixKey(true), cache = this.ownMatrixCache || (this.ownMatrixCache = {}); - if (cache.key === key) { - return cache.value; - } - var tMatrix = this._calcTranslateMatrix(), - options = { - angle: this.angle, - translateX: tMatrix[4], - translateY: tMatrix[5], - scaleX: this.scaleX, - scaleY: this.scaleY, - skewX: this.skewX, - skewY: this.skewY, - flipX: this.flipX, - flipY: this.flipY, - }; - cache.key = key; - cache.value = util.composeMatrix(options); - return cache.value; - }, - - /* - * Calculate object dimensions from its properties - * @private - * @return {Object} .x width dimension - * @return {Object} .y height dimension - */ - _getNonTransformedDimensions: function() { - var strokeWidth = this.strokeWidth, - w = this.width + strokeWidth, - h = this.height + strokeWidth; - return { x: w, y: h }; - }, - - /* - * Calculate object bounding box dimensions from its properties scale, skew. - * @param {Number} skewX, a value to override current skewX - * @param {Number} skewY, a value to override current skewY - * @private - * @return {Object} .x width dimension - * @return {Object} .y height dimension - */ - _getTransformedDimensions: function(skewX, skewY) { - if (typeof skewX === 'undefined') { - skewX = this.skewX; - } - if (typeof skewY === 'undefined') { - skewY = this.skewY; - } - var dimensions, dimX, dimY, - noSkew = skewX === 0 && skewY === 0; - - if (this.strokeUniform) { - dimX = this.width; - dimY = this.height; - } - else { - dimensions = this._getNonTransformedDimensions(); - dimX = dimensions.x; - dimY = dimensions.y; - } - if (noSkew) { - return this._finalizeDimensions(dimX * this.scaleX, dimY * this.scaleY); - } - var bbox = util.sizeAfterTransform(dimX, dimY, { - scaleX: this.scaleX, - scaleY: this.scaleY, - skewX: skewX, - skewY: skewY, - }); - return this._finalizeDimensions(bbox.x, bbox.y); - }, - - /* - * Calculate object bounding box dimensions from its properties scale, skew. - * @param Number width width of the bbox - * @param Number height height of the bbox - * @private - * @return {Object} .x finalized width dimension - * @return {Object} .y finalized height dimension - */ - _finalizeDimensions: function(width, height) { - return this.strokeUniform ? - { x: width + this.strokeWidth, y: height + this.strokeWidth } - : - { x: width, y: height }; - }, - - /* - * Calculate object dimensions for controls box, including padding and canvas zoom. - * and active selection - * private - */ - _calculateCurrentDimensions: function() { - var vpt = this.getViewportTransform(), - dim = this._getTransformedDimensions(), - p = transformPoint(dim, vpt, true); - return p.scalarAdd(2 * this.padding); - }, - }); -})(); - - -fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { - - /** - * Moves an object to the bottom of the stack of drawn objects - * @return {fabric.Object} thisArg - * @chainable - */ - sendToBack: function() { - if (this.group) { - fabric.StaticCanvas.prototype.sendToBack.call(this.group, this); - } - else if (this.canvas) { - this.canvas.sendToBack(this); - } - return this; - }, - - /** - * Moves an object to the top of the stack of drawn objects - * @return {fabric.Object} thisArg - * @chainable - */ - bringToFront: function() { - if (this.group) { - fabric.StaticCanvas.prototype.bringToFront.call(this.group, this); - } - else if (this.canvas) { - this.canvas.bringToFront(this); - } - return this; - }, - - /** - * Moves an object down in stack of drawn objects - * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object - * @return {fabric.Object} thisArg - * @chainable - */ - sendBackwards: function(intersecting) { - if (this.group) { - fabric.StaticCanvas.prototype.sendBackwards.call(this.group, this, intersecting); - } - else if (this.canvas) { - this.canvas.sendBackwards(this, intersecting); - } - return this; - }, - - /** - * Moves an object up in stack of drawn objects - * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object - * @return {fabric.Object} thisArg - * @chainable - */ - bringForward: function(intersecting) { - if (this.group) { - fabric.StaticCanvas.prototype.bringForward.call(this.group, this, intersecting); - } - else if (this.canvas) { - this.canvas.bringForward(this, intersecting); - } - return this; - }, - - /** - * Moves an object to specified level in stack of drawn objects - * @param {Number} index New position of object - * @return {fabric.Object} thisArg - * @chainable - */ - moveTo: function(index) { - if (this.group && this.group.type !== 'activeSelection') { - fabric.StaticCanvas.prototype.moveTo.call(this.group, this, index); - } - else if (this.canvas) { - this.canvas.moveTo(this, index); - } - return this; - } -}); - - -/* _TO_SVG_START_ */ -(function() { - function getSvgColorString(prop, value) { - if (!value) { - return prop + ': none; '; - } - else if (value.toLive) { - return prop + ': url(#SVGID_' + value.id + '); '; - } - else { - var color = new fabric.Color(value), - str = prop + ': ' + color.toRgb() + '; ', - opacity = color.getAlpha(); - if (opacity !== 1) { - //change the color in rgb + opacity - str += prop + '-opacity: ' + opacity.toString() + '; '; - } - return str; - } - } - - var toFixed = fabric.util.toFixed; - - fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { - /** - * Returns styles-string for svg-export - * @param {Boolean} skipShadow a boolean to skip shadow filter output - * @return {String} - */ - getSvgStyles: function(skipShadow) { - - var fillRule = this.fillRule ? this.fillRule : 'nonzero', - strokeWidth = this.strokeWidth ? this.strokeWidth : '0', - strokeDashArray = this.strokeDashArray ? this.strokeDashArray.join(' ') : 'none', - strokeDashOffset = this.strokeDashOffset ? this.strokeDashOffset : '0', - strokeLineCap = this.strokeLineCap ? this.strokeLineCap : 'butt', - strokeLineJoin = this.strokeLineJoin ? this.strokeLineJoin : 'miter', - strokeMiterLimit = this.strokeMiterLimit ? this.strokeMiterLimit : '4', - opacity = typeof this.opacity !== 'undefined' ? this.opacity : '1', - visibility = this.visible ? '' : ' visibility: hidden;', - filter = skipShadow ? '' : this.getSvgFilter(), - fill = getSvgColorString('fill', this.fill), - stroke = getSvgColorString('stroke', this.stroke); - - return [ - stroke, - 'stroke-width: ', strokeWidth, '; ', - 'stroke-dasharray: ', strokeDashArray, '; ', - 'stroke-linecap: ', strokeLineCap, '; ', - 'stroke-dashoffset: ', strokeDashOffset, '; ', - 'stroke-linejoin: ', strokeLineJoin, '; ', - 'stroke-miterlimit: ', strokeMiterLimit, '; ', - fill, - 'fill-rule: ', fillRule, '; ', - 'opacity: ', opacity, ';', - filter, - visibility - ].join(''); - }, - - /** - * Returns styles-string for svg-export - * @param {Object} style the object from which to retrieve style properties - * @param {Boolean} useWhiteSpace a boolean to include an additional attribute in the style. - * @return {String} - */ - getSvgSpanStyles: function(style, useWhiteSpace) { - var term = '; '; - var fontFamily = style.fontFamily ? - 'font-family: ' + (((style.fontFamily.indexOf('\'') === -1 && style.fontFamily.indexOf('"') === -1) ? - '\'' + style.fontFamily + '\'' : style.fontFamily)) + term : ''; - var strokeWidth = style.strokeWidth ? 'stroke-width: ' + style.strokeWidth + term : '', - fontFamily = fontFamily, - fontSize = style.fontSize ? 'font-size: ' + style.fontSize + 'px' + term : '', - fontStyle = style.fontStyle ? 'font-style: ' + style.fontStyle + term : '', - fontWeight = style.fontWeight ? 'font-weight: ' + style.fontWeight + term : '', - fill = style.fill ? getSvgColorString('fill', style.fill) : '', - stroke = style.stroke ? getSvgColorString('stroke', style.stroke) : '', - textDecoration = this.getSvgTextDecoration(style), - deltaY = style.deltaY ? 'baseline-shift: ' + (-style.deltaY) + '; ' : ''; - if (textDecoration) { - textDecoration = 'text-decoration: ' + textDecoration + term; - } - - return [ - stroke, - strokeWidth, - fontFamily, - fontSize, - fontStyle, - fontWeight, - textDecoration, - fill, - deltaY, - useWhiteSpace ? 'white-space: pre; ' : '' - ].join(''); - }, - - /** - * Returns text-decoration property for svg-export - * @param {Object} style the object from which to retrieve style properties - * @return {String} - */ - getSvgTextDecoration: function(style) { - return ['overline', 'underline', 'line-through'].filter(function(decoration) { - return style[decoration.replace('-', '')]; - }).join(' '); - }, - - /** - * Returns filter for svg shadow - * @return {String} - */ - getSvgFilter: function() { - return this.shadow ? 'filter: url(#SVGID_' + this.shadow.id + ');' : ''; - }, - - /** - * Returns id attribute for svg output - * @return {String} - */ - getSvgCommons: function() { - return [ - this.id ? 'id="' + this.id + '" ' : '', - this.clipPath ? 'clip-path="url(#' + this.clipPath.clipPathId + ')" ' : '', - ].join(''); - }, - - /** - * Returns transform-string for svg-export - * @param {Boolean} use the full transform or the single object one. - * @return {String} - */ - getSvgTransform: function(full, additionalTransform) { - var transform = full ? this.calcTransformMatrix() : this.calcOwnMatrix(), - svgTransform = 'transform="' + fabric.util.matrixToSVG(transform); - return svgTransform + - (additionalTransform || '') + '" '; - }, - - _setSVGBg: function(textBgRects) { - if (this.backgroundColor) { - var NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; - textBgRects.push( - '\t\t\n'); - } - }, - - /** - * Returns svg representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toSVG: function(reviver) { - return this._createBaseSVGMarkup(this._toSVG(reviver), { reviver: reviver }); - }, - - /** - * Returns svg clipPath representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toClipPathSVG: function(reviver) { - return '\t' + this._createBaseClipPathSVGMarkup(this._toSVG(reviver), { reviver: reviver }); - }, - - /** - * @private - */ - _createBaseClipPathSVGMarkup: function(objectMarkup, options) { - options = options || {}; - var reviver = options.reviver, - additionalTransform = options.additionalTransform || '', - commonPieces = [ - this.getSvgTransform(true, additionalTransform), - this.getSvgCommons(), - ].join(''), - // insert commons in the markup, style and svgCommons - index = objectMarkup.indexOf('COMMON_PARTS'); - objectMarkup[index] = commonPieces; - return reviver ? reviver(objectMarkup.join('')) : objectMarkup.join(''); - }, - - /** - * @private - */ - _createBaseSVGMarkup: function(objectMarkup, options) { - options = options || {}; - var noStyle = options.noStyle, - reviver = options.reviver, - styleInfo = noStyle ? '' : 'style="' + this.getSvgStyles() + '" ', - shadowInfo = options.withShadow ? 'style="' + this.getSvgFilter() + '" ' : '', - clipPath = this.clipPath, - vectorEffect = this.strokeUniform ? 'vector-effect="non-scaling-stroke" ' : '', - absoluteClipPath = clipPath && clipPath.absolutePositioned, - stroke = this.stroke, fill = this.fill, shadow = this.shadow, - commonPieces, markup = [], clipPathMarkup, - // insert commons in the markup, style and svgCommons - index = objectMarkup.indexOf('COMMON_PARTS'), - additionalTransform = options.additionalTransform; - if (clipPath) { - clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++; - clipPathMarkup = '\n' + - clipPath.toClipPathSVG(reviver) + - '\n'; - } - if (absoluteClipPath) { - markup.push( - '\n' - ); - } - markup.push( - '\n' - ); - commonPieces = [ - styleInfo, - vectorEffect, - noStyle ? '' : this.addPaintOrder(), ' ', - additionalTransform ? 'transform="' + additionalTransform + '" ' : '', - ].join(''); - objectMarkup[index] = commonPieces; - if (fill && fill.toLive) { - markup.push(fill.toSVG(this)); - } - if (stroke && stroke.toLive) { - markup.push(stroke.toSVG(this)); - } - if (shadow) { - markup.push(shadow.toSVG(this)); - } - if (clipPath) { - markup.push(clipPathMarkup); - } - markup.push(objectMarkup.join('')); - markup.push('\n'); - absoluteClipPath && markup.push('\n'); - return reviver ? reviver(markup.join('')) : markup.join(''); - }, - - addPaintOrder: function() { - return this.paintFirst !== 'fill' ? ' paint-order="' + this.paintFirst + '" ' : ''; - } - }); -})(); -/* _TO_SVG_END_ */ - - -(function() { - - var extend = fabric.util.object.extend, - originalSet = 'stateProperties'; - - /* - Depends on `stateProperties` - */ - function saveProps(origin, destination, props) { - var tmpObj = { }, deep = true; - props.forEach(function(prop) { - tmpObj[prop] = origin[prop]; - }); - - extend(origin[destination], tmpObj, deep); - } - - function _isEqual(origValue, currentValue, firstPass) { - if (origValue === currentValue) { - // if the objects are identical, return - return true; - } - else if (Array.isArray(origValue)) { - if (!Array.isArray(currentValue) || origValue.length !== currentValue.length) { - return false; - } - for (var i = 0, len = origValue.length; i < len; i++) { - if (!_isEqual(origValue[i], currentValue[i])) { - return false; - } - } - return true; - } - else if (origValue && typeof origValue === 'object') { - var keys = Object.keys(origValue), key; - if (!currentValue || - typeof currentValue !== 'object' || - (!firstPass && keys.length !== Object.keys(currentValue).length) - ) { - return false; - } - for (var i = 0, len = keys.length; i < len; i++) { - key = keys[i]; - // since clipPath is in the statefull cache list and the clipPath objects - // would be iterated as an object, this would lead to possible infinite recursion - // we do not want to compare those. - if (key === 'canvas' || key === 'group') { - continue; - } - if (!_isEqual(origValue[key], currentValue[key])) { - return false; - } - } - return true; - } - } - - - fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { - - /** - * Returns true if object state (one of its state properties) was changed - * @param {String} [propertySet] optional name for the set of property we want to save - * @return {Boolean} true if instance' state has changed since `{@link fabric.Object#saveState}` was called - */ - hasStateChanged: function(propertySet) { - propertySet = propertySet || originalSet; - var dashedPropertySet = '_' + propertySet; - if (Object.keys(this[dashedPropertySet]).length < this[propertySet].length) { - return true; - } - return !_isEqual(this[dashedPropertySet], this, true); - }, - - /** - * Saves state of an object - * @param {Object} [options] Object with additional `stateProperties` array to include when saving state - * @return {fabric.Object} thisArg - */ - saveState: function(options) { - var propertySet = options && options.propertySet || originalSet, - destination = '_' + propertySet; - if (!this[destination]) { - return this.setupState(options); - } - saveProps(this, destination, this[propertySet]); - if (options && options.stateProperties) { - saveProps(this, destination, options.stateProperties); - } - return this; - }, - - /** - * Setups state of an object - * @param {Object} [options] Object with additional `stateProperties` array to include when saving state - * @return {fabric.Object} thisArg - */ - setupState: function(options) { - options = options || { }; - var propertySet = options.propertySet || originalSet; - options.propertySet = propertySet; - this['_' + propertySet] = { }; - this.saveState(options); - return this; - } - }); -})(); - - -(function() { - - var degreesToRadians = fabric.util.degreesToRadians; - - fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { - /** - * Determines which corner has been clicked - * @private - * @param {Object} pointer The pointer indicating the mouse position - * @return {String|Boolean} corner code (tl, tr, bl, br, etc.), or false if nothing is found - */ - _findTargetCorner: function(pointer, forTouch) { - // objects in group, anykind, are not self modificable, - // must not return an hovered corner. - if (!this.hasControls || this.group || (!this.canvas || this.canvas._activeObject !== this)) { - return false; - } - - var ex = pointer.x, - ey = pointer.y, - xPoints, - lines, keys = Object.keys(this.oCoords), - j = keys.length - 1, i; - this.__corner = 0; - - // cycle in reverse order so we pick first the one on top - for (; j >= 0; j--) { - i = keys[j]; - if (!this.isControlVisible(i)) { - continue; - } - - lines = this._getImageLines(forTouch ? this.oCoords[i].touchCorner : this.oCoords[i].corner); - // // debugging - // - // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2); - - xPoints = this._findCrossPoints({ x: ex, y: ey }, lines); - if (xPoints !== 0 && xPoints % 2 === 1) { - this.__corner = i; - return i; - } - } - return false; - }, - - /** - * Calls a function for each control. The function gets called, - * with the control, the object that is calling the iterator and the control's key - * @param {Function} fn function to iterate over the controls over - */ - forEachControl: function(fn) { - for (var i in this.controls) { - fn(this.controls[i], i, this); - }; - }, - - /** - * Sets the coordinates of the draggable boxes in the corners of - * the image used to scale/rotate it. - * note: if we would switch to ROUND corner area, all of this would disappear. - * everything would resolve to a single point and a pythagorean theorem for the distance - * @private - */ - _setCornerCoords: function() { - var coords = this.oCoords; - - for (var control in coords) { - var controlObject = this.controls[control]; - coords[control].corner = controlObject.calcCornerCoords( - this.angle, this.cornerSize, coords[control].x, coords[control].y, false); - coords[control].touchCorner = controlObject.calcCornerCoords( - this.angle, this.touchCornerSize, coords[control].x, coords[control].y, true); - } - }, - - /** - * Draws a colored layer behind the object, inside its selection borders. - * Requires public options: padding, selectionBackgroundColor - * this function is called when the context is transformed - * has checks to be skipped when the object is on a staticCanvas - * @param {CanvasRenderingContext2D} ctx Context to draw on - * @return {fabric.Object} thisArg - * @chainable - */ - drawSelectionBackground: function(ctx) { - if (!this.selectionBackgroundColor || - (this.canvas && !this.canvas.interactive) || - (this.canvas && this.canvas._activeObject !== this) - ) { - return this; - } - ctx.save(); - var center = this.getCenterPoint(), wh = this._calculateCurrentDimensions(), - vpt = this.canvas.viewportTransform; - ctx.translate(center.x, center.y); - ctx.scale(1 / vpt[0], 1 / vpt[3]); - ctx.rotate(degreesToRadians(this.angle)); - ctx.fillStyle = this.selectionBackgroundColor; - ctx.fillRect(-wh.x / 2, -wh.y / 2, wh.x, wh.y); - ctx.restore(); - return this; - }, - - /** - * Draws borders of an object's bounding box. - * Requires public properties: width, height - * Requires public options: padding, borderColor - * @param {CanvasRenderingContext2D} ctx Context to draw on - * @param {Object} styleOverride object to override the object style - * @return {fabric.Object} thisArg - * @chainable - */ - drawBorders: function(ctx, styleOverride) { - styleOverride = styleOverride || {}; - var wh = this._calculateCurrentDimensions(), - strokeWidth = this.borderScaleFactor, - width = wh.x + strokeWidth, - height = wh.y + strokeWidth, - hasControls = typeof styleOverride.hasControls !== 'undefined' ? - styleOverride.hasControls : this.hasControls, - shouldStroke = false; - - ctx.save(); - ctx.strokeStyle = styleOverride.borderColor || this.borderColor; - this._setLineDash(ctx, styleOverride.borderDashArray || this.borderDashArray); - - ctx.strokeRect( - -width / 2, - -height / 2, - width, - height - ); - - if (hasControls) { - ctx.beginPath(); - this.forEachControl(function(control, key, fabricObject) { - // in this moment, the ctx is centered on the object. - // width and height of the above function are the size of the bbox. - if (control.withConnection && control.getVisibility(fabricObject, key)) { - // reset movement for each control - shouldStroke = true; - ctx.moveTo(control.x * width, control.y * height); - ctx.lineTo( - control.x * width + control.offsetX, - control.y * height + control.offsetY - ); - } - }); - if (shouldStroke) { - ctx.stroke(); - } - } - ctx.restore(); - return this; - }, - - /** - * Draws borders of an object's bounding box when it is inside a group. - * Requires public properties: width, height - * Requires public options: padding, borderColor - * @param {CanvasRenderingContext2D} ctx Context to draw on - * @param {object} options object representing current object parameters - * @param {Object} styleOverride object to override the object style - * @return {fabric.Object} thisArg - * @chainable - */ - drawBordersInGroup: function(ctx, options, styleOverride) { - styleOverride = styleOverride || {}; - var bbox = fabric.util.sizeAfterTransform(this.width, this.height, options), - strokeWidth = this.strokeWidth, - strokeUniform = this.strokeUniform, - borderScaleFactor = this.borderScaleFactor, - width = - bbox.x + strokeWidth * (strokeUniform ? this.canvas.getZoom() : options.scaleX) + borderScaleFactor, - height = - bbox.y + strokeWidth * (strokeUniform ? this.canvas.getZoom() : options.scaleY) + borderScaleFactor; - ctx.save(); - this._setLineDash(ctx, styleOverride.borderDashArray || this.borderDashArray); - ctx.strokeStyle = styleOverride.borderColor || this.borderColor; - ctx.strokeRect( - -width / 2, - -height / 2, - width, - height - ); - - ctx.restore(); - return this; - }, - - /** - * Draws corners of an object's bounding box. - * Requires public properties: width, height - * Requires public options: cornerSize, padding - * @param {CanvasRenderingContext2D} ctx Context to draw on - * @param {Object} styleOverride object to override the object style - * @return {fabric.Object} thisArg - * @chainable - */ - drawControls: function(ctx, styleOverride) { - styleOverride = styleOverride || {}; - ctx.save(); - var retinaScaling = this.canvas.getRetinaScaling(), matrix, p; - ctx.setTransform(retinaScaling, 0, 0, retinaScaling, 0, 0); - ctx.strokeStyle = ctx.fillStyle = styleOverride.cornerColor || this.cornerColor; - if (!this.transparentCorners) { - ctx.strokeStyle = styleOverride.cornerStrokeColor || this.cornerStrokeColor; - } - this._setLineDash(ctx, styleOverride.cornerDashArray || this.cornerDashArray); - this.setCoords(); - if (this.group) { - // fabricJS does not really support drawing controls inside groups, - // this piece of code here helps having at least the control in places. - // If an application needs to show some objects as selected because of some UI state - // can still call Object._renderControls() on any object they desire, independently of groups. - // using no padding, circular controls and hiding the rotating cursor is higly suggested, - matrix = this.group.calcTransformMatrix(); - } - this.forEachControl(function(control, key, fabricObject) { - p = fabricObject.oCoords[key]; - if (control.getVisibility(fabricObject, key)) { - if (matrix) { - p = fabric.util.transformPoint(p, matrix); - } - control.render(ctx, p.x, p.y, styleOverride, fabricObject); - } - }); - ctx.restore(); - - return this; - }, - - /** - * Returns true if the specified control is visible, false otherwise. - * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'. - * @returns {Boolean} true if the specified control is visible, false otherwise - */ - isControlVisible: function(controlKey) { - return this.controls[controlKey] && this.controls[controlKey].getVisibility(this, controlKey); - }, - - /** - * Sets the visibility of the specified control. - * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'. - * @param {Boolean} visible true to set the specified control visible, false otherwise - * @return {fabric.Object} thisArg - * @chainable - */ - setControlVisible: function(controlKey, visible) { - if (!this._controlsVisibility) { - this._controlsVisibility = {}; - } - this._controlsVisibility[controlKey] = visible; - return this; - }, - - /** - * Sets the visibility state of object controls. - * @param {Object} [options] Options object - * @param {Boolean} [options.bl] true to enable the bottom-left control, false to disable it - * @param {Boolean} [options.br] true to enable the bottom-right control, false to disable it - * @param {Boolean} [options.mb] true to enable the middle-bottom control, false to disable it - * @param {Boolean} [options.ml] true to enable the middle-left control, false to disable it - * @param {Boolean} [options.mr] true to enable the middle-right control, false to disable it - * @param {Boolean} [options.mt] true to enable the middle-top control, false to disable it - * @param {Boolean} [options.tl] true to enable the top-left control, false to disable it - * @param {Boolean} [options.tr] true to enable the top-right control, false to disable it - * @param {Boolean} [options.mtr] true to enable the middle-top-rotate control, false to disable it - * @return {fabric.Object} thisArg - * @chainable - */ - setControlsVisibility: function(options) { - options || (options = { }); - - for (var p in options) { - this.setControlVisible(p, options[p]); - } - return this; - }, - - - /** - * This callback function is called every time _discardActiveObject or _setActiveObject - * try to to deselect this object. If the function returns true, the process is cancelled - * @param {Object} [options] options sent from the upper functions - * @param {Event} [options.e] event if the process is generated by an event - */ - onDeselect: function() { - // implemented by sub-classes, as needed. - }, - - - /** - * This callback function is called every time _discardActiveObject or _setActiveObject - * try to to select this object. If the function returns true, the process is cancelled - * @param {Object} [options] options sent from the upper functions - * @param {Event} [options.e] event if the process is generated by an event - */ - onSelect: function() { - // implemented by sub-classes, as needed. - } - }); -})(); - - -fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ { - - /** - * Animation duration (in ms) for fx* methods - * @type Number - * @default - */ - FX_DURATION: 500, - - /** - * Centers object horizontally with animation. - * @param {fabric.Object} object Object to center - * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties - * @param {Function} [callbacks.onComplete] Invoked on completion - * @param {Function} [callbacks.onChange] Invoked on every step of animation - * @return {fabric.AnimationContext} context - */ - fxCenterObjectH: function (object, callbacks) { - callbacks = callbacks || { }; - - var empty = function() { }, - onComplete = callbacks.onComplete || empty, - onChange = callbacks.onChange || empty, - _this = this; - - return fabric.util.animate({ - target: this, - startValue: object.left, - endValue: this.getCenter().left, - duration: this.FX_DURATION, - onChange: function(value) { - object.set('left', value); - _this.requestRenderAll(); - onChange(); - }, - onComplete: function() { - object.setCoords(); - onComplete(); - } - }); - }, - - /** - * Centers object vertically with animation. - * @param {fabric.Object} object Object to center - * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties - * @param {Function} [callbacks.onComplete] Invoked on completion - * @param {Function} [callbacks.onChange] Invoked on every step of animation - * @return {fabric.AnimationContext} context - */ - fxCenterObjectV: function (object, callbacks) { - callbacks = callbacks || { }; - - var empty = function() { }, - onComplete = callbacks.onComplete || empty, - onChange = callbacks.onChange || empty, - _this = this; - - return fabric.util.animate({ - target: this, - startValue: object.top, - endValue: this.getCenter().top, - duration: this.FX_DURATION, - onChange: function(value) { - object.set('top', value); - _this.requestRenderAll(); - onChange(); - }, - onComplete: function() { - object.setCoords(); - onComplete(); - } - }); - }, - - /** - * Same as `fabric.Canvas#remove` but animated - * @param {fabric.Object} object Object to remove - * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties - * @param {Function} [callbacks.onComplete] Invoked on completion - * @param {Function} [callbacks.onChange] Invoked on every step of animation - * @return {fabric.AnimationContext} context - */ - fxRemove: function (object, callbacks) { - callbacks = callbacks || { }; - - var empty = function() { }, - onComplete = callbacks.onComplete || empty, - onChange = callbacks.onChange || empty, - _this = this; - - return fabric.util.animate({ - target: this, - startValue: object.opacity, - endValue: 0, - duration: this.FX_DURATION, - onChange: function(value) { - object.set('opacity', value); - _this.requestRenderAll(); - onChange(); - }, - onComplete: function () { - _this.remove(object); - onComplete(); - } - }); - } -}); - -fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { - /** - * Animates object's properties - * @param {String|Object} property Property to animate (if string) or properties to animate (if object) - * @param {Number|Object} value Value to animate property to (if string was given first) or options object - * @return {fabric.Object} thisArg - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#animation} - * @return {fabric.AnimationContext | fabric.AnimationContext[]} animation context (or an array if passed multiple properties) - * - * As object — multiple properties - * - * object.animate({ left: ..., top: ... }); - * object.animate({ left: ..., top: ... }, { duration: ... }); - * - * As string — one property - * - * object.animate('left', ...); - * object.animate('left', { duration: ... }); - * - */ - animate: function () { - if (arguments[0] && typeof arguments[0] === 'object') { - var propsToAnimate = [], prop, skipCallbacks, out = []; - for (prop in arguments[0]) { - propsToAnimate.push(prop); - } - for (var i = 0, len = propsToAnimate.length; i < len; i++) { - prop = propsToAnimate[i]; - skipCallbacks = i !== len - 1; - out.push(this._animate(prop, arguments[0][prop], arguments[1], skipCallbacks)); - } - return out; - } - else { - return this._animate.apply(this, arguments); - } - }, - - /** - * @private - * @param {String} property Property to animate - * @param {String} to Value to animate to - * @param {Object} [options] Options object - * @param {Boolean} [skipCallbacks] When true, callbacks like onchange and oncomplete are not invoked - */ - _animate: function(property, to, options, skipCallbacks) { - var _this = this, propPair; - - to = to.toString(); - - if (!options) { - options = { }; - } - else { - options = fabric.util.object.clone(options); - } - - if (~property.indexOf('.')) { - propPair = property.split('.'); - } - - var propIsColor = - _this.colorProperties.indexOf(property) > -1 || - (propPair && _this.colorProperties.indexOf(propPair[1]) > -1); - - var currentValue = propPair - ? this.get(propPair[0])[propPair[1]] - : this.get(property); - - if (!('from' in options)) { - options.from = currentValue; - } - - if (!propIsColor) { - if (~to.indexOf('=')) { - to = currentValue + parseFloat(to.replace('=', '')); - } - else { - to = parseFloat(to); - } - } - - var _options = { - target: this, - startValue: options.from, - endValue: to, - byValue: options.by, - easing: options.easing, - duration: options.duration, - abort: options.abort && function(value, valueProgress, timeProgress) { - return options.abort.call(_this, value, valueProgress, timeProgress); - }, - onChange: function (value, valueProgress, timeProgress) { - if (propPair) { - _this[propPair[0]][propPair[1]] = value; - } - else { - _this.set(property, value); - } - if (skipCallbacks) { - return; - } - options.onChange && options.onChange(value, valueProgress, timeProgress); - }, - onComplete: function (value, valueProgress, timeProgress) { - if (skipCallbacks) { - return; - } - - _this.setCoords(); - options.onComplete && options.onComplete(value, valueProgress, timeProgress); - } - }; - - if (propIsColor) { - return fabric.util.animateColor(_options.startValue, _options.endValue, _options.duration, _options); - } - else { - return fabric.util.animate(_options); - } - } -}); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - extend = fabric.util.object.extend, - clone = fabric.util.object.clone, - coordProps = { x1: 1, x2: 1, y1: 1, y2: 1 }; - - if (fabric.Line) { - fabric.warn('fabric.Line is already defined'); - return; - } - - /** - * Line class - * @class fabric.Line - * @extends fabric.Object - * @see {@link fabric.Line#initialize} for constructor definition - */ - fabric.Line = fabric.util.createClass(fabric.Object, /** @lends fabric.Line.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'line', - - /** - * x value or first line edge - * @type Number - * @default - */ - x1: 0, - - /** - * y value or first line edge - * @type Number - * @default - */ - y1: 0, - - /** - * x value or second line edge - * @type Number - * @default - */ - x2: 0, - - /** - * y value or second line edge - * @type Number - * @default - */ - y2: 0, - - cacheProperties: fabric.Object.prototype.cacheProperties.concat('x1', 'x2', 'y1', 'y2'), - - /** - * Constructor - * @param {Array} [points] Array of points - * @param {Object} [options] Options object - * @return {fabric.Line} thisArg - */ - initialize: function(points, options) { - if (!points) { - points = [0, 0, 0, 0]; - } - - this.callSuper('initialize', options); - - this.set('x1', points[0]); - this.set('y1', points[1]); - this.set('x2', points[2]); - this.set('y2', points[3]); - - this._setWidthHeight(options); - }, - - /** - * @private - * @param {Object} [options] Options - */ - _setWidthHeight: function(options) { - options || (options = { }); - - this.width = Math.abs(this.x2 - this.x1); - this.height = Math.abs(this.y2 - this.y1); - - this.left = 'left' in options - ? options.left - : this._getLeftToOriginX(); - - this.top = 'top' in options - ? options.top - : this._getTopToOriginY(); - }, - - /** - * @private - * @param {String} key - * @param {*} value - */ - _set: function(key, value) { - this.callSuper('_set', key, value); - if (typeof coordProps[key] !== 'undefined') { - this._setWidthHeight(); - } - return this; - }, - - /** - * @private - * @return {Number} leftToOriginX Distance from left edge of canvas to originX of Line. - */ - _getLeftToOriginX: makeEdgeToOriginGetter( - { // property names - origin: 'originX', - axis1: 'x1', - axis2: 'x2', - dimension: 'width' - }, - { // possible values of origin - nearest: 'left', - center: 'center', - farthest: 'right' - } - ), - - /** - * @private - * @return {Number} topToOriginY Distance from top edge of canvas to originY of Line. - */ - _getTopToOriginY: makeEdgeToOriginGetter( - { // property names - origin: 'originY', - axis1: 'y1', - axis2: 'y2', - dimension: 'height' - }, - { // possible values of origin - nearest: 'top', - center: 'center', - farthest: 'bottom' - } - ), - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function(ctx) { - ctx.beginPath(); - - - var p = this.calcLinePoints(); - ctx.moveTo(p.x1, p.y1); - ctx.lineTo(p.x2, p.y2); - - ctx.lineWidth = this.strokeWidth; - - // TODO: test this - // make sure setting "fill" changes color of a line - // (by copying fillStyle to strokeStyle, since line is stroked, not filled) - var origStrokeStyle = ctx.strokeStyle; - ctx.strokeStyle = this.stroke || ctx.fillStyle; - this.stroke && this._renderStroke(ctx); - ctx.strokeStyle = origStrokeStyle; - }, - - /** - * This function is an helper for svg import. it returns the center of the object in the svg - * untransformed coordinates - * @private - * @return {Object} center point from element coordinates - */ - _findCenterFromElement: function() { - return { - x: (this.x1 + this.x2) / 2, - y: (this.y1 + this.y2) / 2, - }; - }, - - /** - * Returns object representation of an instance - * @method toObject - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function(propertiesToInclude) { - return extend(this.callSuper('toObject', propertiesToInclude), this.calcLinePoints()); - }, - - /* - * Calculate object dimensions from its properties - * @private - */ - _getNonTransformedDimensions: function() { - var dim = this.callSuper('_getNonTransformedDimensions'); - if (this.strokeLineCap === 'butt') { - if (this.width === 0) { - dim.y -= this.strokeWidth; - } - if (this.height === 0) { - dim.x -= this.strokeWidth; - } - } - return dim; - }, - - /** - * Recalculates line points given width and height - * @private - */ - calcLinePoints: function() { - var xMult = this.x1 <= this.x2 ? -1 : 1, - yMult = this.y1 <= this.y2 ? -1 : 1, - x1 = (xMult * this.width * 0.5), - y1 = (yMult * this.height * 0.5), - x2 = (xMult * this.width * -0.5), - y2 = (yMult * this.height * -0.5); - - return { - x1: x1, - x2: x2, - y1: y1, - y2: y2 - }; - }, - - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function() { - var p = this.calcLinePoints(); - return [ - '\n' - ]; - }, - /* _TO_SVG_END_ */ - }); - - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Line.fromElement}) - * @static - * @memberOf fabric.Line - * @see http://www.w3.org/TR/SVG/shapes.html#LineElement - */ - fabric.Line.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x1 y1 x2 y2'.split(' ')); - - /** - * Returns fabric.Line instance from an SVG element - * @static - * @memberOf fabric.Line - * @param {SVGElement} element Element to parse - * @param {Object} [options] Options object - * @param {Function} [callback] callback function invoked after parsing - */ - fabric.Line.fromElement = function(element, callback, options) { - options = options || { }; - var parsedAttributes = fabric.parseAttributes(element, fabric.Line.ATTRIBUTE_NAMES), - points = [ - parsedAttributes.x1 || 0, - parsedAttributes.y1 || 0, - parsedAttributes.x2 || 0, - parsedAttributes.y2 || 0 - ]; - callback(new fabric.Line(points, extend(parsedAttributes, options))); - }; - /* _FROM_SVG_END_ */ - - /** - * Returns fabric.Line instance from an object representation - * @static - * @memberOf fabric.Line - * @param {Object} object Object to create an instance from - * @param {function} [callback] invoked with new instance as first argument - */ - fabric.Line.fromObject = function(object, callback) { - function _callback(instance) { - delete instance.points; - callback && callback(instance); - }; - var options = clone(object, true); - options.points = [object.x1, object.y1, object.x2, object.y2]; - fabric.Object._fromObject('Line', options, _callback, 'points'); - }; - - /** - * Produces a function that calculates distance from canvas edge to Line origin. - */ - function makeEdgeToOriginGetter(propertyNames, originValues) { - var origin = propertyNames.origin, - axis1 = propertyNames.axis1, - axis2 = propertyNames.axis2, - dimension = propertyNames.dimension, - nearest = originValues.nearest, - center = originValues.center, - farthest = originValues.farthest; - - return function() { - switch (this.get(origin)) { - case nearest: - return Math.min(this.get(axis1), this.get(axis2)); - case center: - return Math.min(this.get(axis1), this.get(axis2)) + (0.5 * this.get(dimension)); - case farthest: - return Math.max(this.get(axis1), this.get(axis2)); - } - }; - - } - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - degreesToRadians = fabric.util.degreesToRadians; - - if (fabric.Circle) { - fabric.warn('fabric.Circle is already defined.'); - return; - } - - /** - * Circle class - * @class fabric.Circle - * @extends fabric.Object - * @see {@link fabric.Circle#initialize} for constructor definition - */ - fabric.Circle = fabric.util.createClass(fabric.Object, /** @lends fabric.Circle.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'circle', - - /** - * Radius of this circle - * @type Number - * @default - */ - radius: 0, - - /** - * degrees of start of the circle. - * probably will change to degrees in next major version - * @type Number 0 - 359 - * @default 0 - */ - startAngle: 0, - - /** - * End angle of the circle - * probably will change to degrees in next major version - * @type Number 1 - 360 - * @default 360 - */ - endAngle: 360, - - cacheProperties: fabric.Object.prototype.cacheProperties.concat('radius', 'startAngle', 'endAngle'), - - /** - * @private - * @param {String} key - * @param {*} value - * @return {fabric.Circle} thisArg - */ - _set: function(key, value) { - this.callSuper('_set', key, value); - - if (key === 'radius') { - this.setRadius(value); - } - - return this; - }, - - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function(propertiesToInclude) { - return this.callSuper('toObject', ['radius', 'startAngle', 'endAngle'].concat(propertiesToInclude)); - }, - - /* _TO_SVG_START_ */ - - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function() { - var svgString, x = 0, y = 0, - angle = (this.endAngle - this.startAngle) % 360; - - if (angle === 0) { - svgString = [ - '\n' - ]; - } - else { - var start = degreesToRadians(this.startAngle), - end = degreesToRadians(this.endAngle), - radius = this.radius, - startX = fabric.util.cos(start) * radius, - startY = fabric.util.sin(start) * radius, - endX = fabric.util.cos(end) * radius, - endY = fabric.util.sin(end) * radius, - largeFlag = angle > 180 ? '1' : '0'; - svgString = [ - '\n' - ]; - } - return svgString; - }, - /* _TO_SVG_END_ */ - - /** - * @private - * @param {CanvasRenderingContext2D} ctx context to render on - */ - _render: function(ctx) { - ctx.beginPath(); - ctx.arc( - 0, - 0, - this.radius, - degreesToRadians(this.startAngle), - degreesToRadians(this.endAngle), - false - ); - this._renderPaintInOrder(ctx); - }, - - /** - * Returns horizontal radius of an object (according to how an object is scaled) - * @return {Number} - */ - getRadiusX: function() { - return this.get('radius') * this.get('scaleX'); - }, - - /** - * Returns vertical radius of an object (according to how an object is scaled) - * @return {Number} - */ - getRadiusY: function() { - return this.get('radius') * this.get('scaleY'); - }, - - /** - * Sets radius of an object (and updates width accordingly) - * @return {fabric.Circle} thisArg - */ - setRadius: function(value) { - this.radius = value; - return this.set('width', value * 2).set('height', value * 2); - }, - }); - - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Circle.fromElement}) - * @static - * @memberOf fabric.Circle - * @see: http://www.w3.org/TR/SVG/shapes.html#CircleElement - */ - fabric.Circle.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('cx cy r'.split(' ')); - - /** - * Returns {@link fabric.Circle} instance from an SVG element - * @static - * @memberOf fabric.Circle - * @param {SVGElement} element Element to parse - * @param {Function} [callback] Options callback invoked after parsing is finished - * @param {Object} [options] Options object - * @throws {Error} If value of `r` attribute is missing or invalid - */ - fabric.Circle.fromElement = function(element, callback) { - var parsedAttributes = fabric.parseAttributes(element, fabric.Circle.ATTRIBUTE_NAMES); - - if (!isValidRadius(parsedAttributes)) { - throw new Error('value of `r` attribute is required and can not be negative'); - } - - parsedAttributes.left = (parsedAttributes.left || 0) - parsedAttributes.radius; - parsedAttributes.top = (parsedAttributes.top || 0) - parsedAttributes.radius; - callback(new fabric.Circle(parsedAttributes)); - }; - - /** - * @private - */ - function isValidRadius(attributes) { - return (('radius' in attributes) && (attributes.radius >= 0)); - } - /* _FROM_SVG_END_ */ - - /** - * Returns {@link fabric.Circle} instance from an object representation - * @static - * @memberOf fabric.Circle - * @param {Object} object Object to create an instance from - * @param {function} [callback] invoked with new instance as first argument - * @return {void} - */ - fabric.Circle.fromObject = function(object, callback) { - fabric.Object._fromObject('Circle', object, callback); - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }); - - if (fabric.Triangle) { - fabric.warn('fabric.Triangle is already defined'); - return; - } - - /** - * Triangle class - * @class fabric.Triangle - * @extends fabric.Object - * @return {fabric.Triangle} thisArg - * @see {@link fabric.Triangle#initialize} for constructor definition - */ - fabric.Triangle = fabric.util.createClass(fabric.Object, /** @lends fabric.Triangle.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'triangle', - - /** - * Width is set to 100 to compensate the old initialize code that was setting it to 100 - * @type Number - * @default - */ - width: 100, - - /** - * Height is set to 100 to compensate the old initialize code that was setting it to 100 - * @type Number - * @default - */ - height: 100, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function(ctx) { - var widthBy2 = this.width / 2, - heightBy2 = this.height / 2; - - ctx.beginPath(); - ctx.moveTo(-widthBy2, heightBy2); - ctx.lineTo(0, -heightBy2); - ctx.lineTo(widthBy2, heightBy2); - ctx.closePath(); - - this._renderPaintInOrder(ctx); - }, - - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function() { - var widthBy2 = this.width / 2, - heightBy2 = this.height / 2, - points = [ - -widthBy2 + ' ' + heightBy2, - '0 ' + -heightBy2, - widthBy2 + ' ' + heightBy2 - ].join(','); - return [ - '' - ]; - }, - /* _TO_SVG_END_ */ - }); - - /** - * Returns {@link fabric.Triangle} instance from an object representation - * @static - * @memberOf fabric.Triangle - * @param {Object} object Object to create an instance from - * @param {function} [callback] invoked with new instance as first argument - */ - fabric.Triangle.fromObject = function(object, callback) { - return fabric.Object._fromObject('Triangle', object, callback); - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - piBy2 = Math.PI * 2; - - if (fabric.Ellipse) { - fabric.warn('fabric.Ellipse is already defined.'); - return; - } - - /** - * Ellipse class - * @class fabric.Ellipse - * @extends fabric.Object - * @return {fabric.Ellipse} thisArg - * @see {@link fabric.Ellipse#initialize} for constructor definition - */ - fabric.Ellipse = fabric.util.createClass(fabric.Object, /** @lends fabric.Ellipse.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'ellipse', - - /** - * Horizontal radius - * @type Number - * @default - */ - rx: 0, - - /** - * Vertical radius - * @type Number - * @default - */ - ry: 0, - - cacheProperties: fabric.Object.prototype.cacheProperties.concat('rx', 'ry'), - - /** - * Constructor - * @param {Object} [options] Options object - * @return {fabric.Ellipse} thisArg - */ - initialize: function(options) { - this.callSuper('initialize', options); - this.set('rx', options && options.rx || 0); - this.set('ry', options && options.ry || 0); - }, - - /** - * @private - * @param {String} key - * @param {*} value - * @return {fabric.Ellipse} thisArg - */ - _set: function(key, value) { - this.callSuper('_set', key, value); - switch (key) { - - case 'rx': - this.rx = value; - this.set('width', value * 2); - break; - - case 'ry': - this.ry = value; - this.set('height', value * 2); - break; - - } - return this; - }, - - /** - * Returns horizontal radius of an object (according to how an object is scaled) - * @return {Number} - */ - getRx: function() { - return this.get('rx') * this.get('scaleX'); - }, - - /** - * Returns Vertical radius of an object (according to how an object is scaled) - * @return {Number} - */ - getRy: function() { - return this.get('ry') * this.get('scaleY'); - }, - - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function(propertiesToInclude) { - return this.callSuper('toObject', ['rx', 'ry'].concat(propertiesToInclude)); - }, - - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function() { - return [ - '\n' - ]; - }, - /* _TO_SVG_END_ */ - - /** - * @private - * @param {CanvasRenderingContext2D} ctx context to render on - */ - _render: function(ctx) { - ctx.beginPath(); - ctx.save(); - ctx.transform(1, 0, 0, this.ry / this.rx, 0, 0); - ctx.arc( - 0, - 0, - this.rx, - 0, - piBy2, - false); - ctx.restore(); - this._renderPaintInOrder(ctx); - }, - }); - - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Ellipse.fromElement}) - * @static - * @memberOf fabric.Ellipse - * @see http://www.w3.org/TR/SVG/shapes.html#EllipseElement - */ - fabric.Ellipse.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('cx cy rx ry'.split(' ')); - - /** - * Returns {@link fabric.Ellipse} instance from an SVG element - * @static - * @memberOf fabric.Ellipse - * @param {SVGElement} element Element to parse - * @param {Function} [callback] Options callback invoked after parsing is finished - * @return {fabric.Ellipse} - */ - fabric.Ellipse.fromElement = function(element, callback) { - - var parsedAttributes = fabric.parseAttributes(element, fabric.Ellipse.ATTRIBUTE_NAMES); - - parsedAttributes.left = (parsedAttributes.left || 0) - parsedAttributes.rx; - parsedAttributes.top = (parsedAttributes.top || 0) - parsedAttributes.ry; - callback(new fabric.Ellipse(parsedAttributes)); - }; - /* _FROM_SVG_END_ */ - - /** - * Returns {@link fabric.Ellipse} instance from an object representation - * @static - * @memberOf fabric.Ellipse - * @param {Object} object Object to create an instance from - * @param {function} [callback] invoked with new instance as first argument - * @return {void} - */ - fabric.Ellipse.fromObject = function(object, callback) { - fabric.Object._fromObject('Ellipse', object, callback); - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - extend = fabric.util.object.extend; - - if (fabric.Rect) { - fabric.warn('fabric.Rect is already defined'); - return; - } - - /** - * Rectangle class - * @class fabric.Rect - * @extends fabric.Object - * @return {fabric.Rect} thisArg - * @see {@link fabric.Rect#initialize} for constructor definition - */ - fabric.Rect = fabric.util.createClass(fabric.Object, /** @lends fabric.Rect.prototype */ { - - /** - * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged}) - * as well as for history (undo/redo) purposes - * @type Array - */ - stateProperties: fabric.Object.prototype.stateProperties.concat('rx', 'ry'), - - /** - * Type of an object - * @type String - * @default - */ - type: 'rect', - - /** - * Horizontal border radius - * @type Number - * @default - */ - rx: 0, - - /** - * Vertical border radius - * @type Number - * @default - */ - ry: 0, - - cacheProperties: fabric.Object.prototype.cacheProperties.concat('rx', 'ry'), - - /** - * Constructor - * @param {Object} [options] Options object - * @return {Object} thisArg - */ - initialize: function(options) { - this.callSuper('initialize', options); - this._initRxRy(); - }, - - /** - * Initializes rx/ry attributes - * @private - */ - _initRxRy: function() { - if (this.rx && !this.ry) { - this.ry = this.rx; - } - else if (this.ry && !this.rx) { - this.rx = this.ry; - } - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function(ctx) { - - // 1x1 case (used in spray brush) optimization was removed because - // with caching and higher zoom level this makes more damage than help - - var rx = this.rx ? Math.min(this.rx, this.width / 2) : 0, - ry = this.ry ? Math.min(this.ry, this.height / 2) : 0, - w = this.width, - h = this.height, - x = -this.width / 2, - y = -this.height / 2, - isRounded = rx !== 0 || ry !== 0, - /* "magic number" for bezier approximations of arcs (http://itc.ktu.lt/itc354/Riskus354.pdf) */ - k = 1 - 0.5522847498; - ctx.beginPath(); - - ctx.moveTo(x + rx, y); - - ctx.lineTo(x + w - rx, y); - isRounded && ctx.bezierCurveTo(x + w - k * rx, y, x + w, y + k * ry, x + w, y + ry); - - ctx.lineTo(x + w, y + h - ry); - isRounded && ctx.bezierCurveTo(x + w, y + h - k * ry, x + w - k * rx, y + h, x + w - rx, y + h); - - ctx.lineTo(x + rx, y + h); - isRounded && ctx.bezierCurveTo(x + k * rx, y + h, x, y + h - k * ry, x, y + h - ry); - - ctx.lineTo(x, y + ry); - isRounded && ctx.bezierCurveTo(x, y + k * ry, x + k * rx, y, x + rx, y); - - ctx.closePath(); - - this._renderPaintInOrder(ctx); - }, - - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function(propertiesToInclude) { - return this.callSuper('toObject', ['rx', 'ry'].concat(propertiesToInclude)); - }, - - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function() { - var x = -this.width / 2, y = -this.height / 2; - return [ - '\n' - ]; - }, - /* _TO_SVG_END_ */ - }); - - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by `fabric.Rect.fromElement`) - * @static - * @memberOf fabric.Rect - * @see: http://www.w3.org/TR/SVG/shapes.html#RectElement - */ - fabric.Rect.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x y rx ry width height'.split(' ')); - - /** - * Returns {@link fabric.Rect} instance from an SVG element - * @static - * @memberOf fabric.Rect - * @param {SVGElement} element Element to parse - * @param {Function} callback callback function invoked after parsing - * @param {Object} [options] Options object - */ - fabric.Rect.fromElement = function(element, callback, options) { - if (!element) { - return callback(null); - } - options = options || { }; - - var parsedAttributes = fabric.parseAttributes(element, fabric.Rect.ATTRIBUTE_NAMES); - parsedAttributes.left = parsedAttributes.left || 0; - parsedAttributes.top = parsedAttributes.top || 0; - parsedAttributes.height = parsedAttributes.height || 0; - parsedAttributes.width = parsedAttributes.width || 0; - var rect = new fabric.Rect(extend((options ? fabric.util.object.clone(options) : { }), parsedAttributes)); - rect.visible = rect.visible && rect.width > 0 && rect.height > 0; - callback(rect); - }; - /* _FROM_SVG_END_ */ - - /** - * Returns {@link fabric.Rect} instance from an object representation - * @static - * @memberOf fabric.Rect - * @param {Object} object Object to create an instance from - * @param {Function} [callback] Callback to invoke when an fabric.Rect instance is created - */ - fabric.Rect.fromObject = function(object, callback) { - return fabric.Object._fromObject('Rect', object, callback); - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - extend = fabric.util.object.extend, - min = fabric.util.array.min, - max = fabric.util.array.max, - toFixed = fabric.util.toFixed, - projectStrokeOnPoints = fabric.util.projectStrokeOnPoints; - - if (fabric.Polyline) { - fabric.warn('fabric.Polyline is already defined'); - return; - } - - /** - * Polyline class - * @class fabric.Polyline - * @extends fabric.Object - * @see {@link fabric.Polyline#initialize} for constructor definition - */ - fabric.Polyline = fabric.util.createClass(fabric.Object, /** @lends fabric.Polyline.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'polyline', - - /** - * Points array - * @type Array - * @default - */ - points: null, - - /** - * WARNING: Feature in progress - * Calculate the exact bounding box taking in account strokeWidth on acute angles - * this will be turned to true by default on fabric 6.0 - * maybe will be left in as an optimization since calculations may be slow - * @deprecated - * @type Boolean - * @default false - */ - exactBoundingBox: false, - - cacheProperties: fabric.Object.prototype.cacheProperties.concat('points'), - - /** - * Constructor - * @param {Array} points Array of points (where each point is an object with x and y) - * @param {Object} [options] Options object - * @return {fabric.Polyline} thisArg - * @example - * var poly = new fabric.Polyline([ - * { x: 10, y: 10 }, - * { x: 50, y: 30 }, - * { x: 40, y: 70 }, - * { x: 60, y: 50 }, - * { x: 100, y: 150 }, - * { x: 40, y: 100 } - * ], { - * stroke: 'red', - * left: 100, - * top: 100 - * }); - */ - initialize: function(points, options) { - options = options || {}; - this.points = points || []; - this.callSuper('initialize', options); - this._setPositionDimensions(options); - }, - - /** - * @private - */ - _projectStrokeOnPoints: function () { - return projectStrokeOnPoints(this.points, this, true); - }, - - _setPositionDimensions: function(options) { - var calcDim = this._calcDimensions(options), correctLeftTop, - correctSize = this.exactBoundingBox ? this.strokeWidth : 0; - this.width = calcDim.width - correctSize; - this.height = calcDim.height - correctSize; - if (!options.fromSVG) { - correctLeftTop = this.translateToGivenOrigin( - { - // this looks bad, but is one way to keep it optional for now. - x: calcDim.left - this.strokeWidth / 2 + correctSize / 2, - y: calcDim.top - this.strokeWidth / 2 + correctSize / 2 - }, - 'left', - 'top', - this.originX, - this.originY - ); - } - if (typeof options.left === 'undefined') { - this.left = options.fromSVG ? calcDim.left : correctLeftTop.x; - } - if (typeof options.top === 'undefined') { - this.top = options.fromSVG ? calcDim.top : correctLeftTop.y; - } - this.pathOffset = { - x: calcDim.left + this.width / 2 + correctSize / 2, - y: calcDim.top + this.height / 2 + correctSize / 2 - }; - }, - - /** - * Calculate the polygon min and max point from points array, - * returning an object with left, top, width, height to measure the - * polygon size - * @return {Object} object.left X coordinate of the polygon leftmost point - * @return {Object} object.top Y coordinate of the polygon topmost point - * @return {Object} object.width distance between X coordinates of the polygon leftmost and rightmost point - * @return {Object} object.height distance between Y coordinates of the polygon topmost and bottommost point - * @private - */ - _calcDimensions: function() { - - var points = this.exactBoundingBox ? this._projectStrokeOnPoints() : this.points, - minX = min(points, 'x') || 0, - minY = min(points, 'y') || 0, - maxX = max(points, 'x') || 0, - maxY = max(points, 'y') || 0, - width = (maxX - minX), - height = (maxY - minY); - - return { - left: minX, - top: minY, - width: width, - height: height, - }; - }, - - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toObject: function(propertiesToInclude) { - return extend(this.callSuper('toObject', propertiesToInclude), { - points: this.points.concat() - }); - }, - - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function() { - var points = [], diffX = this.pathOffset.x, diffY = this.pathOffset.y, - NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; - - for (var i = 0, len = this.points.length; i < len; i++) { - points.push( - toFixed(this.points[i].x - diffX, NUM_FRACTION_DIGITS), ',', - toFixed(this.points[i].y - diffY, NUM_FRACTION_DIGITS), ' ' - ); - } - return [ - '<' + this.type + ' ', 'COMMON_PARTS', - 'points="', points.join(''), - '" />\n' - ]; - }, - /* _TO_SVG_END_ */ - - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - commonRender: function(ctx) { - var point, len = this.points.length, - x = this.pathOffset.x, - y = this.pathOffset.y; - - if (!len || isNaN(this.points[len - 1].y)) { - // do not draw if no points or odd points - // NaN comes from parseFloat of a empty string in parser - return false; - } - ctx.beginPath(); - ctx.moveTo(this.points[0].x - x, this.points[0].y - y); - for (var i = 0; i < len; i++) { - point = this.points[i]; - ctx.lineTo(point.x - x, point.y - y); - } - return true; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function(ctx) { - if (!this.commonRender(ctx)) { - return; - } - this._renderPaintInOrder(ctx); - }, - - /** - * Returns complexity of an instance - * @return {Number} complexity of this instance - */ - complexity: function() { - return this.get('points').length; - } - }); - - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Polyline.fromElement}) - * @static - * @memberOf fabric.Polyline - * @see: http://www.w3.org/TR/SVG/shapes.html#PolylineElement - */ - fabric.Polyline.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(); - - /** - * Returns fabric.Polyline instance from an SVG element - * @static - * @memberOf fabric.Polyline - * @param {SVGElement} element Element to parser - * @param {Function} callback callback function invoked after parsing - * @param {Object} [options] Options object - */ - fabric.Polyline.fromElementGenerator = function(_class) { - return function(element, callback, options) { - if (!element) { - return callback(null); - } - options || (options = { }); - - var points = fabric.parsePointsAttribute(element.getAttribute('points')), - parsedAttributes = fabric.parseAttributes(element, fabric[_class].ATTRIBUTE_NAMES); - parsedAttributes.fromSVG = true; - callback(new fabric[_class](points, extend(parsedAttributes, options))); - }; - }; - - fabric.Polyline.fromElement = fabric.Polyline.fromElementGenerator('Polyline'); - - /* _FROM_SVG_END_ */ - - /** - * Returns fabric.Polyline instance from an object representation - * @static - * @memberOf fabric.Polyline - * @param {Object} object Object to create an instance from - * @param {Function} [callback] Callback to invoke when an fabric.Path instance is created - */ - fabric.Polyline.fromObject = function(object, callback) { - return fabric.Object._fromObject('Polyline', object, callback, 'points'); - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = {}), - projectStrokeOnPoints = fabric.util.projectStrokeOnPoints; - - if (fabric.Polygon) { - fabric.warn('fabric.Polygon is already defined'); - return; - } - - /** - * Polygon class - * @class fabric.Polygon - * @extends fabric.Polyline - * @see {@link fabric.Polygon#initialize} for constructor definition - */ - fabric.Polygon = fabric.util.createClass(fabric.Polyline, /** @lends fabric.Polygon.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'polygon', - - /** - * @private - */ - _projectStrokeOnPoints: function () { - return projectStrokeOnPoints(this.points, this); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function(ctx) { - if (!this.commonRender(ctx)) { - return; - } - ctx.closePath(); - this._renderPaintInOrder(ctx); - }, - - }); - - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by `fabric.Polygon.fromElement`) - * @static - * @memberOf fabric.Polygon - * @see: http://www.w3.org/TR/SVG/shapes.html#PolygonElement - */ - fabric.Polygon.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(); - - /** - * Returns {@link fabric.Polygon} instance from an SVG element - * @static - * @memberOf fabric.Polygon - * @param {SVGElement} element Element to parse - * @param {Function} callback callback function invoked after parsing - * @param {Object} [options] Options object - */ - fabric.Polygon.fromElement = fabric.Polyline.fromElementGenerator('Polygon'); - /* _FROM_SVG_END_ */ - - /** - * Returns fabric.Polygon instance from an object representation - * @static - * @memberOf fabric.Polygon - * @param {Object} object Object to create an instance from - * @param {Function} [callback] Callback to invoke when an fabric.Path instance is created - * @return {void} - */ - fabric.Polygon.fromObject = function(object, callback) { - fabric.Object._fromObject('Polygon', object, callback, 'points'); - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - min = fabric.util.array.min, - max = fabric.util.array.max, - extend = fabric.util.object.extend, - clone = fabric.util.object.clone, - _toString = Object.prototype.toString, - toFixed = fabric.util.toFixed; - - if (fabric.Path) { - fabric.warn('fabric.Path is already defined'); - return; - } - - /** - * Path class - * @class fabric.Path - * @extends fabric.Object - * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#path_and_pathgroup} - * @see {@link fabric.Path#initialize} for constructor definition - */ - fabric.Path = fabric.util.createClass(fabric.Object, /** @lends fabric.Path.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'path', - - /** - * Array of path points - * @type Array - * @default - */ - path: null, - - cacheProperties: fabric.Object.prototype.cacheProperties.concat('path', 'fillRule'), - - stateProperties: fabric.Object.prototype.stateProperties.concat('path'), - - /** - * Constructor - * @param {Array|String} path Path data (sequence of coordinates and corresponding "command" tokens) - * @param {Object} [options] Options object - * @return {fabric.Path} thisArg - */ - initialize: function (path, options) { - options = clone(options || {}); - delete options.path; - this.callSuper('initialize', options); - this._setPath(path || [], options); - }, - - /** - * @private - * @param {Array|String} path Path data (sequence of coordinates and corresponding "command" tokens) - * @param {Object} [options] Options object - */ - _setPath: function (path, options) { - var fromArray = _toString.call(path) === '[object Array]'; - - this.path = fabric.util.makePathSimpler( - fromArray ? path : fabric.util.parsePath(path) - ); - - fabric.Polyline.prototype._setPositionDimensions.call(this, options || {}); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx context to render path on - */ - _renderPathCommands: function(ctx) { - var current, // current instruction - subpathStartX = 0, - subpathStartY = 0, - x = 0, // current x - y = 0, // current y - controlX = 0, // current control point x - controlY = 0, // current control point y - l = -this.pathOffset.x, - t = -this.pathOffset.y; - - ctx.beginPath(); - - for (var i = 0, len = this.path.length; i < len; ++i) { - - current = this.path[i]; - - switch (current[0]) { // first letter - - case 'L': // lineto, absolute - x = current[1]; - y = current[2]; - ctx.lineTo(x + l, y + t); - break; - - case 'M': // moveTo, absolute - x = current[1]; - y = current[2]; - subpathStartX = x; - subpathStartY = y; - ctx.moveTo(x + l, y + t); - break; - - case 'C': // bezierCurveTo, absolute - x = current[5]; - y = current[6]; - controlX = current[3]; - controlY = current[4]; - ctx.bezierCurveTo( - current[1] + l, - current[2] + t, - controlX + l, - controlY + t, - x + l, - y + t - ); - break; - - case 'Q': // quadraticCurveTo, absolute - ctx.quadraticCurveTo( - current[1] + l, - current[2] + t, - current[3] + l, - current[4] + t - ); - x = current[3]; - y = current[4]; - controlX = current[1]; - controlY = current[2]; - break; - - case 'z': - case 'Z': - x = subpathStartX; - y = subpathStartY; - ctx.closePath(); - break; - } - } - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx context to render path on - */ - _render: function(ctx) { - this._renderPathCommands(ctx); - this._renderPaintInOrder(ctx); - }, - - /** - * Returns string representation of an instance - * @return {String} string representation of an instance - */ - toString: function() { - return '#'; - }, - - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function(propertiesToInclude) { - return extend(this.callSuper('toObject', propertiesToInclude), { - path: this.path.map(function(item) { return item.slice(); }), - }); - }, - - /** - * Returns dataless object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toDatalessObject: function(propertiesToInclude) { - var o = this.toObject(['sourcePath'].concat(propertiesToInclude)); - if (o.sourcePath) { - delete o.path; - } - return o; - }, - - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function() { - var path = fabric.util.joinPath(this.path); - return [ - '\n' - ]; - }, - - _getOffsetTransform: function() { - var digits = fabric.Object.NUM_FRACTION_DIGITS; - return ' translate(' + toFixed(-this.pathOffset.x, digits) + ', ' + - toFixed(-this.pathOffset.y, digits) + ')'; - }, - - /** - * Returns svg clipPath representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toClipPathSVG: function(reviver) { - var additionalTransform = this._getOffsetTransform(); - return '\t' + this._createBaseClipPathSVGMarkup( - this._toSVG(), { reviver: reviver, additionalTransform: additionalTransform } - ); - }, - - /** - * Returns svg representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toSVG: function(reviver) { - var additionalTransform = this._getOffsetTransform(); - return this._createBaseSVGMarkup(this._toSVG(), { reviver: reviver, additionalTransform: additionalTransform }); - }, - /* _TO_SVG_END_ */ - - /** - * Returns number representation of an instance complexity - * @return {Number} complexity of this instance - */ - complexity: function() { - return this.path.length; - }, - - /** - * @private - */ - _calcDimensions: function() { - - var aX = [], - aY = [], - current, // current instruction - subpathStartX = 0, - subpathStartY = 0, - x = 0, // current x - y = 0, // current y - bounds; - - for (var i = 0, len = this.path.length; i < len; ++i) { - - current = this.path[i]; - - switch (current[0]) { // first letter - - case 'L': // lineto, absolute - x = current[1]; - y = current[2]; - bounds = []; - break; - - case 'M': // moveTo, absolute - x = current[1]; - y = current[2]; - subpathStartX = x; - subpathStartY = y; - bounds = []; - break; - - case 'C': // bezierCurveTo, absolute - bounds = fabric.util.getBoundsOfCurve(x, y, - current[1], - current[2], - current[3], - current[4], - current[5], - current[6] - ); - x = current[5]; - y = current[6]; - break; - - case 'Q': // quadraticCurveTo, absolute - bounds = fabric.util.getBoundsOfCurve(x, y, - current[1], - current[2], - current[1], - current[2], - current[3], - current[4] - ); - x = current[3]; - y = current[4]; - break; - - case 'z': - case 'Z': - x = subpathStartX; - y = subpathStartY; - break; - } - bounds.forEach(function (point) { - aX.push(point.x); - aY.push(point.y); - }); - aX.push(x); - aY.push(y); - } - - var minX = min(aX) || 0, - minY = min(aY) || 0, - maxX = max(aX) || 0, - maxY = max(aY) || 0, - deltaX = maxX - minX, - deltaY = maxY - minY; - - return { - left: minX, - top: minY, - width: deltaX, - height: deltaY - }; - } - }); - - /** - * Creates an instance of fabric.Path from an object - * @static - * @memberOf fabric.Path - * @param {Object} object - * @param {Function} [callback] Callback to invoke when an fabric.Path instance is created - */ - fabric.Path.fromObject = function(object, callback) { - if (typeof object.sourcePath === 'string') { - var pathUrl = object.sourcePath; - fabric.loadSVGFromURL(pathUrl, function (elements) { - var path = elements[0]; - path.setOptions(object); - callback && callback(path); - }); - } - else { - fabric.Object._fromObject('Path', object, callback, 'path'); - } - }; - - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by `fabric.Path.fromElement`) - * @static - * @memberOf fabric.Path - * @see http://www.w3.org/TR/SVG/paths.html#PathElement - */ - fabric.Path.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(['d']); - - /** - * Creates an instance of fabric.Path from an SVG element - * @static - * @memberOf fabric.Path - * @param {SVGElement} element to parse - * @param {Function} callback Callback to invoke when an fabric.Path instance is created - * @param {Object} [options] Options object - * @param {Function} [callback] Options callback invoked after parsing is finished - */ - fabric.Path.fromElement = function(element, callback, options) { - var parsedAttributes = fabric.parseAttributes(element, fabric.Path.ATTRIBUTE_NAMES); - parsedAttributes.fromSVG = true; - callback(new fabric.Path(parsedAttributes.d, extend(parsedAttributes, options))); - }; - /* _FROM_SVG_END_ */ - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - min = fabric.util.array.min, - max = fabric.util.array.max; - - if (fabric.Group) { - return; - } - - /** - * Group class - * @class fabric.Group - * @extends fabric.Object - * @mixes fabric.Collection - * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#groups} - * @see {@link fabric.Group#initialize} for constructor definition - */ - fabric.Group = fabric.util.createClass(fabric.Object, fabric.Collection, /** @lends fabric.Group.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'group', - - /** - * Width of stroke - * @type Number - * @default - */ - strokeWidth: 0, - - /** - * Indicates if click, mouseover, mouseout events & hoverCursor should also check for subtargets - * @type Boolean - * @default - */ - subTargetCheck: false, - - /** - * Groups are container, do not render anything on theyr own, ence no cache properties - * @type Array - * @default - */ - cacheProperties: [], - - /** - * setOnGroup is a method used for TextBox that is no more used since 2.0.0 The behavior is still - * available setting this boolean to true. - * @type Boolean - * @since 2.0.0 - * @default - */ - useSetOnGroup: false, - - /** - * Constructor - * @param {Object} objects Group objects - * @param {Object} [options] Options object - * @param {Boolean} [isAlreadyGrouped] if true, objects have been grouped already. - * @return {Object} thisArg - */ - initialize: function(objects, options, isAlreadyGrouped) { - options = options || {}; - this._objects = []; - // if objects enclosed in a group have been grouped already, - // we cannot change properties of objects. - // Thus we need to set options to group without objects, - isAlreadyGrouped && this.callSuper('initialize', options); - this._objects = objects || []; - for (var i = this._objects.length; i--; ) { - this._objects[i].group = this; - } - - if (!isAlreadyGrouped) { - var center = options && options.centerPoint; - // we want to set origins before calculating the bounding box. - // so that the topleft can be set with that in mind. - // if specific top and left are passed, are overwritten later - // with the callSuper('initialize', options) - if (options.originX !== undefined) { - this.originX = options.originX; - } - if (options.originY !== undefined) { - this.originY = options.originY; - } - // if coming from svg i do not want to calc bounds. - // i assume width and height are passed along options - center || this._calcBounds(); - this._updateObjectsCoords(center); - delete options.centerPoint; - this.callSuper('initialize', options); - } - else { - this._updateObjectsACoords(); - } - - this.setCoords(); - }, - - /** - * @private - */ - _updateObjectsACoords: function() { - var skipControls = true; - for (var i = this._objects.length; i--; ){ - this._objects[i].setCoords(skipControls); - } - }, - - /** - * @private - * @param {Boolean} [skipCoordsChange] if true, coordinates of objects enclosed in a group do not change - */ - _updateObjectsCoords: function(center) { - var center = center || this.getCenterPoint(); - for (var i = this._objects.length; i--; ){ - this._updateObjectCoords(this._objects[i], center); - } - }, - - /** - * @private - * @param {Object} object - * @param {fabric.Point} center, current center of group. - */ - _updateObjectCoords: function(object, center) { - var objectLeft = object.left, - objectTop = object.top, - skipControls = true; - - object.set({ - left: objectLeft - center.x, - top: objectTop - center.y - }); - object.group = this; - object.setCoords(skipControls); - }, - - /** - * Returns string represenation of a group - * @return {String} - */ - toString: function() { - return '#'; - }, - - /** - * Adds an object to a group; Then recalculates group's dimension, position. - * @param {Object} object - * @return {fabric.Group} thisArg - * @chainable - */ - addWithUpdate: function(object) { - var nested = !!this.group; - this._restoreObjectsState(); - fabric.util.resetObjectTransform(this); - if (object) { - if (nested) { - // if this group is inside another group, we need to pre transform the object - fabric.util.removeTransformFromObject(object, this.group.calcTransformMatrix()); - } - this._objects.push(object); - object.group = this; - object._set('canvas', this.canvas); - } - this._calcBounds(); - this._updateObjectsCoords(); - this.dirty = true; - if (nested) { - this.group.addWithUpdate(); - } - else { - this.setCoords(); - } - return this; - }, - - /** - * Removes an object from a group; Then recalculates group's dimension, position. - * @param {Object} object - * @return {fabric.Group} thisArg - * @chainable - */ - removeWithUpdate: function(object) { - this._restoreObjectsState(); - fabric.util.resetObjectTransform(this); - - this.remove(object); - this._calcBounds(); - this._updateObjectsCoords(); - this.setCoords(); - this.dirty = true; - return this; - }, - - /** - * @private - */ - _onObjectAdded: function(object) { - this.dirty = true; - object.group = this; - object._set('canvas', this.canvas); - }, - - /** - * @private - */ - _onObjectRemoved: function(object) { - this.dirty = true; - delete object.group; - }, - - /** - * @private - */ - _set: function(key, value) { - var i = this._objects.length; - if (this.useSetOnGroup) { - while (i--) { - this._objects[i].setOnGroup(key, value); - } - } - if (key === 'canvas') { - while (i--) { - this._objects[i]._set(key, value); - } - } - fabric.Object.prototype._set.call(this, key, value); - }, - - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function(propertiesToInclude) { - var _includeDefaultValues = this.includeDefaultValues; - var objsToObject = this._objects - .filter(function (obj) { - return !obj.excludeFromExport; - }) - .map(function (obj) { - var originalDefaults = obj.includeDefaultValues; - obj.includeDefaultValues = _includeDefaultValues; - var _obj = obj.toObject(propertiesToInclude); - obj.includeDefaultValues = originalDefaults; - return _obj; - }); - var obj = fabric.Object.prototype.toObject.call(this, propertiesToInclude); - obj.objects = objsToObject; - return obj; - }, - - /** - * Returns object representation of an instance, in dataless mode. - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toDatalessObject: function(propertiesToInclude) { - var objsToObject, sourcePath = this.sourcePath; - if (sourcePath) { - objsToObject = sourcePath; - } - else { - var _includeDefaultValues = this.includeDefaultValues; - objsToObject = this._objects.map(function(obj) { - var originalDefaults = obj.includeDefaultValues; - obj.includeDefaultValues = _includeDefaultValues; - var _obj = obj.toDatalessObject(propertiesToInclude); - obj.includeDefaultValues = originalDefaults; - return _obj; - }); - } - var obj = fabric.Object.prototype.toDatalessObject.call(this, propertiesToInclude); - obj.objects = objsToObject; - return obj; - }, - - /** - * Renders instance on a given context - * @param {CanvasRenderingContext2D} ctx context to render instance on - */ - render: function(ctx) { - this._transformDone = true; - this.callSuper('render', ctx); - this._transformDone = false; - }, - - /** - * Decide if the object should cache or not. Create its own cache level - * needsItsOwnCache should be used when the object drawing method requires - * a cache step. None of the fabric classes requires it. - * Generally you do not cache objects in groups because the group is already cached. - * @return {Boolean} - */ - shouldCache: function() { - var ownCache = fabric.Object.prototype.shouldCache.call(this); - if (ownCache) { - for (var i = 0, len = this._objects.length; i < len; i++) { - if (this._objects[i].willDrawShadow()) { - this.ownCaching = false; - return false; - } - } - } - return ownCache; - }, - - /** - * Check if this object or a child object will cast a shadow - * @return {Boolean} - */ - willDrawShadow: function() { - if (fabric.Object.prototype.willDrawShadow.call(this)) { - return true; - } - for (var i = 0, len = this._objects.length; i < len; i++) { - if (this._objects[i].willDrawShadow()) { - return true; - } - } - return false; - }, - - /** - * Check if this group or its parent group are caching, recursively up - * @return {Boolean} - */ - isOnACache: function() { - return this.ownCaching || (this.group && this.group.isOnACache()); - }, - - /** - * Execute the drawing operation for an object on a specified context - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - drawObject: function(ctx) { - for (var i = 0, len = this._objects.length; i < len; i++) { - this._objects[i].render(ctx); - } - this._drawClipPath(ctx, this.clipPath); - }, - - /** - * Check if cache is dirty - */ - isCacheDirty: function(skipCanvas) { - if (this.callSuper('isCacheDirty', skipCanvas)) { - return true; - } - if (!this.statefullCache) { - return false; - } - for (var i = 0, len = this._objects.length; i < len; i++) { - if (this._objects[i].isCacheDirty(true)) { - if (this._cacheCanvas) { - // if this group has not a cache canvas there is nothing to clean - var x = this.cacheWidth / this.zoomX, y = this.cacheHeight / this.zoomY; - this._cacheContext.clearRect(-x / 2, -y / 2, x, y); - } - return true; - } - } - return false; - }, - - /** - * Restores original state of each of group objects (original state is that which was before group was created). - * if the nested boolean is true, the original state will be restored just for the - * first group and not for all the group chain - * @private - * @param {Boolean} nested tell the function to restore object state up to the parent group and not more - * @return {fabric.Group} thisArg - * @chainable - */ - _restoreObjectsState: function() { - var groupMatrix = this.calcOwnMatrix(); - this._objects.forEach(function(object) { - // instead of using _this = this; - fabric.util.addTransformToObject(object, groupMatrix); - delete object.group; - object.setCoords(); - }); - return this; - }, - - /** - * Destroys a group (restoring state of its objects) - * @return {fabric.Group} thisArg - * @chainable - */ - destroy: function() { - // when group is destroyed objects needs to get a repaint to be eventually - // displayed on canvas. - this._objects.forEach(function(object) { - object.set('dirty', true); - }); - return this._restoreObjectsState(); - }, - - dispose: function () { - this.callSuper('dispose'); - this.forEachObject(function (object) { - object.dispose && object.dispose(); - }); - this._objects = []; - }, - - /** - * make a group an active selection, remove the group from canvas - * the group has to be on canvas for this to work. - * @return {fabric.ActiveSelection} thisArg - * @chainable - */ - toActiveSelection: function() { - if (!this.canvas) { - return; - } - var objects = this._objects, canvas = this.canvas; - this._objects = []; - var options = this.toObject(); - delete options.objects; - var activeSelection = new fabric.ActiveSelection([]); - activeSelection.set(options); - activeSelection.type = 'activeSelection'; - canvas.remove(this); - objects.forEach(function(object) { - object.group = activeSelection; - object.dirty = true; - canvas.add(object); - }); - activeSelection.canvas = canvas; - activeSelection._objects = objects; - canvas._activeObject = activeSelection; - activeSelection.setCoords(); - return activeSelection; - }, - - /** - * Destroys a group (restoring state of its objects) - * @return {fabric.Group} thisArg - * @chainable - */ - ungroupOnCanvas: function() { - return this._restoreObjectsState(); - }, - - /** - * Sets coordinates of all objects inside group - * @return {fabric.Group} thisArg - * @chainable - */ - setObjectsCoords: function() { - var skipControls = true; - this.forEachObject(function(object) { - object.setCoords(skipControls); - }); - return this; - }, - - /** - * @private - */ - _calcBounds: function(onlyWidthHeight) { - var aX = [], - aY = [], - o, prop, coords, - props = ['tr', 'br', 'bl', 'tl'], - i = 0, iLen = this._objects.length, - j, jLen = props.length; - - for ( ; i < iLen; ++i) { - o = this._objects[i]; - coords = o.calcACoords(); - for (j = 0; j < jLen; j++) { - prop = props[j]; - aX.push(coords[prop].x); - aY.push(coords[prop].y); - } - o.aCoords = coords; - } - - this._getBounds(aX, aY, onlyWidthHeight); - }, - - /** - * @private - */ - _getBounds: function(aX, aY, onlyWidthHeight) { - var minXY = new fabric.Point(min(aX), min(aY)), - maxXY = new fabric.Point(max(aX), max(aY)), - top = minXY.y || 0, left = minXY.x || 0, - width = (maxXY.x - minXY.x) || 0, - height = (maxXY.y - minXY.y) || 0; - this.width = width; - this.height = height; - if (!onlyWidthHeight) { - // the bounding box always finds the topleft most corner. - // whatever is the group origin, we set up here the left/top position. - this.setPositionByOrigin({ x: left, y: top }, 'left', 'top'); - } - }, - - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - _toSVG: function(reviver) { - var svgString = ['\n']; - - for (var i = 0, len = this._objects.length; i < len; i++) { - svgString.push('\t\t', this._objects[i].toSVG(reviver)); - } - svgString.push('\n'); - return svgString; - }, - - /** - * Returns styles-string for svg-export, specific version for group - * @return {String} - */ - getSvgStyles: function() { - var opacity = typeof this.opacity !== 'undefined' && this.opacity !== 1 ? - 'opacity: ' + this.opacity + ';' : '', - visibility = this.visible ? '' : ' visibility: hidden;'; - return [ - opacity, - this.getSvgFilter(), - visibility - ].join(''); - }, - - /** - * Returns svg clipPath representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toClipPathSVG: function(reviver) { - var svgString = []; - - for (var i = 0, len = this._objects.length; i < len; i++) { - svgString.push('\t', this._objects[i].toClipPathSVG(reviver)); - } - - return this._createBaseClipPathSVGMarkup(svgString, { reviver: reviver }); - }, - /* _TO_SVG_END_ */ - }); - - /** - * Returns {@link fabric.Group} instance from an object representation - * @static - * @memberOf fabric.Group - * @param {Object} object Object to create a group from - * @param {Function} [callback] Callback to invoke when an group instance is created - */ - fabric.Group.fromObject = function(object, callback) { - var objects = object.objects, - options = fabric.util.object.clone(object, true); - delete options.objects; - if (typeof objects === 'string') { - // it has to be an url or something went wrong. - fabric.loadSVGFromURL(objects, function (elements) { - var group = fabric.util.groupSVGElements(elements, object, objects); - group.set(options); - callback && callback(group); - }); - return; - } - fabric.util.enlivenObjects(objects, function (enlivenedObjects) { - var options = fabric.util.object.clone(object, true); - delete options.objects; - fabric.util.enlivenObjectEnlivables(object, options, function () { - callback && callback(new fabric.Group(enlivenedObjects, options, true)); - }); - }); - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }); - - if (fabric.ActiveSelection) { - return; - } - - /** - * Group class - * @class fabric.ActiveSelection - * @extends fabric.Group - * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#groups} - * @see {@link fabric.ActiveSelection#initialize} for constructor definition - */ - fabric.ActiveSelection = fabric.util.createClass(fabric.Group, /** @lends fabric.ActiveSelection.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'activeSelection', - - /** - * Constructor - * @param {Object} objects ActiveSelection objects - * @param {Object} [options] Options object - * @return {Object} thisArg - */ - initialize: function(objects, options) { - options = options || {}; - this._objects = objects || []; - for (var i = this._objects.length; i--; ) { - this._objects[i].group = this; - } - - if (options.originX) { - this.originX = options.originX; - } - if (options.originY) { - this.originY = options.originY; - } - this._calcBounds(); - this._updateObjectsCoords(); - fabric.Object.prototype.initialize.call(this, options); - this.setCoords(); - }, - - /** - * Change te activeSelection to a normal group, - * High level function that automatically adds it to canvas as - * active object. no events fired. - * @since 2.0.0 - * @return {fabric.Group} - */ - toGroup: function() { - var objects = this._objects.concat(); - this._objects = []; - var options = fabric.Object.prototype.toObject.call(this); - var newGroup = new fabric.Group([]); - delete options.type; - newGroup.set(options); - objects.forEach(function(object) { - object.canvas.remove(object); - object.group = newGroup; - }); - newGroup._objects = objects; - if (!this.canvas) { - return newGroup; - } - var canvas = this.canvas; - canvas.add(newGroup); - canvas._activeObject = newGroup; - newGroup.setCoords(); - return newGroup; - }, - - /** - * If returns true, deselection is cancelled. - * @since 2.0.0 - * @return {Boolean} [cancel] - */ - onDeselect: function() { - this.destroy(); - return false; - }, - - /** - * Returns string representation of a group - * @return {String} - */ - toString: function() { - return '#'; - }, - - /** - * Decide if the object should cache or not. Create its own cache level - * objectCaching is a global flag, wins over everything - * needsItsOwnCache should be used when the object drawing method requires - * a cache step. None of the fabric classes requires it. - * Generally you do not cache objects in groups because the group outside is cached. - * @return {Boolean} - */ - shouldCache: function() { - return false; - }, - - /** - * Check if this group or its parent group are caching, recursively up - * @return {Boolean} - */ - isOnACache: function() { - return false; - }, - - /** - * Renders controls and borders for the object - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Object} [styleOverride] properties to override the object style - * @param {Object} [childrenOverride] properties to override the children overrides - */ - _renderControls: function(ctx, styleOverride, childrenOverride) { - ctx.save(); - ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1; - this.callSuper('_renderControls', ctx, styleOverride); - childrenOverride = childrenOverride || { }; - if (typeof childrenOverride.hasControls === 'undefined') { - childrenOverride.hasControls = false; - } - childrenOverride.forActiveSelection = true; - for (var i = 0, len = this._objects.length; i < len; i++) { - this._objects[i]._renderControls(ctx, childrenOverride); - } - ctx.restore(); - }, - }); - - /** - * Returns {@link fabric.ActiveSelection} instance from an object representation - * @static - * @memberOf fabric.ActiveSelection - * @param {Object} object Object to create a group from - * @param {Function} [callback] Callback to invoke when an ActiveSelection instance is created - */ - fabric.ActiveSelection.fromObject = function(object, callback) { - fabric.util.enlivenObjects(object.objects, function(enlivenedObjects) { - delete object.objects; - callback && callback(new fabric.ActiveSelection(enlivenedObjects, object, true)); - }); - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var extend = fabric.util.object.extend; - - if (!global.fabric) { - global.fabric = { }; - } - - if (global.fabric.Image) { - fabric.warn('fabric.Image is already defined.'); - return; - } - - /** - * Image class - * @class fabric.Image - * @extends fabric.Object - * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#images} - * @see {@link fabric.Image#initialize} for constructor definition - */ - fabric.Image = fabric.util.createClass(fabric.Object, /** @lends fabric.Image.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'image', - - /** - * Width of a stroke. - * For image quality a stroke multiple of 2 gives better results. - * @type Number - * @default - */ - strokeWidth: 0, - - /** - * When calling {@link fabric.Image.getSrc}, return value from element src with `element.getAttribute('src')`. - * This allows for relative urls as image src. - * @since 2.7.0 - * @type Boolean - * @default - */ - srcFromAttribute: false, - - /** - * private - * contains last value of scaleX to detect - * if the Image got resized after the last Render - * @type Number - */ - _lastScaleX: 1, - - /** - * private - * contains last value of scaleY to detect - * if the Image got resized after the last Render - * @type Number - */ - _lastScaleY: 1, - - /** - * private - * contains last value of scaling applied by the apply filter chain - * @type Number - */ - _filterScalingX: 1, - - /** - * private - * contains last value of scaling applied by the apply filter chain - * @type Number - */ - _filterScalingY: 1, - - /** - * minimum scale factor under which any resizeFilter is triggered to resize the image - * 0 will disable the automatic resize. 1 will trigger automatically always. - * number bigger than 1 are not implemented yet. - * @type Number - */ - minimumScaleTrigger: 0.5, - - /** - * List of properties to consider when checking if - * state of an object is changed ({@link fabric.Object#hasStateChanged}) - * as well as for history (undo/redo) purposes - * @type Array - */ - stateProperties: fabric.Object.prototype.stateProperties.concat('cropX', 'cropY'), - - /** - * List of properties to consider when checking if cache needs refresh - * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single - * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty - * and refreshed at the next render - * @type Array - */ - cacheProperties: fabric.Object.prototype.cacheProperties.concat('cropX', 'cropY'), - - /** - * key used to retrieve the texture representing this image - * @since 2.0.0 - * @type String - * @default - */ - cacheKey: '', - - /** - * Image crop in pixels from original image size. - * @since 2.0.0 - * @type Number - * @default - */ - cropX: 0, - - /** - * Image crop in pixels from original image size. - * @since 2.0.0 - * @type Number - * @default - */ - cropY: 0, - - /** - * Indicates whether this canvas will use image smoothing when painting this image. - * Also influence if the cacheCanvas for this image uses imageSmoothing - * @since 4.0.0-beta.11 - * @type Boolean - * @default - */ - imageSmoothing: true, - - /** - * Constructor - * Image can be initialized with any canvas drawable or a string. - * The string should be a url and will be loaded as an image. - * Canvas and Image element work out of the box, while videos require extra code to work. - * Please check video element events for seeking. - * @param {HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | String} element Image element - * @param {Object} [options] Options object - * @param {function} [callback] callback function to call after eventual filters applied. - * @return {fabric.Image} thisArg - */ - initialize: function(element, options) { - options || (options = { }); - this.filters = []; - this.cacheKey = 'texture' + fabric.Object.__uid++; - this.callSuper('initialize', options); - this._initElement(element, options); - }, - - /** - * Returns image element which this instance if based on - * @return {HTMLImageElement} Image element - */ - getElement: function() { - return this._element || {}; - }, - - /** - * Sets image element for this instance to a specified one. - * If filters defined they are applied to new image. - * You might need to call `canvas.renderAll` and `object.setCoords` after replacing, to render new image and update controls area. - * @param {HTMLImageElement} element - * @param {Object} [options] Options object - * @return {fabric.Image} thisArg - * @chainable - */ - setElement: function(element, options) { - this.removeTexture(this.cacheKey); - this.removeTexture(this.cacheKey + '_filtered'); - this._element = element; - this._originalElement = element; - this._initConfig(options); - if (this.filters.length !== 0) { - this.applyFilters(); - } - // resizeFilters work on the already filtered copy. - // we need to apply resizeFilters AFTER normal filters. - // applyResizeFilters is run more often than normal filters - // and is triggered by user interactions rather than dev code - if (this.resizeFilter) { - this.applyResizeFilters(); - } - return this; - }, - - /** - * Delete a single texture if in webgl mode - */ - removeTexture: function(key) { - var backend = fabric.filterBackend; - if (backend && backend.evictCachesForKey) { - backend.evictCachesForKey(key); - } - }, - - /** - * Delete textures, reference to elements and eventually JSDOM cleanup - */ - dispose: function () { - this.callSuper('dispose'); - this.removeTexture(this.cacheKey); - this.removeTexture(this.cacheKey + '_filtered'); - this._cacheContext = undefined; - ['_originalElement', '_element', '_filteredEl', '_cacheCanvas'].forEach((function(element) { - fabric.util.cleanUpJsdomNode(this[element]); - this[element] = undefined; - }).bind(this)); - }, - - /** - * Get the crossOrigin value (of the corresponding image element) - */ - getCrossOrigin: function() { - return this._originalElement && (this._originalElement.crossOrigin || null); - }, - - /** - * Returns original size of an image - * @return {Object} Object with "width" and "height" properties - */ - getOriginalSize: function() { - var element = this.getElement(); - return { - width: element.naturalWidth || element.width, - height: element.naturalHeight || element.height - }; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _stroke: function(ctx) { - if (!this.stroke || this.strokeWidth === 0) { - return; - } - var w = this.width / 2, h = this.height / 2; - ctx.beginPath(); - ctx.moveTo(-w, -h); - ctx.lineTo(w, -h); - ctx.lineTo(w, h); - ctx.lineTo(-w, h); - ctx.lineTo(-w, -h); - ctx.closePath(); - }, - - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toObject: function(propertiesToInclude) { - var filters = []; - - this.filters.forEach(function(filterObj) { - if (filterObj) { - filters.push(filterObj.toObject()); - } - }); - var object = extend( - this.callSuper( - 'toObject', - ['cropX', 'cropY'].concat(propertiesToInclude) - ), { - src: this.getSrc(), - crossOrigin: this.getCrossOrigin(), - filters: filters, - }); - if (this.resizeFilter) { - object.resizeFilter = this.resizeFilter.toObject(); - } - return object; - }, - - /** - * Returns true if an image has crop applied, inspecting values of cropX,cropY,width,height. - * @return {Boolean} - */ - hasCrop: function() { - return this.cropX || this.cropY || this.width < this._element.width || this.height < this._element.height; - }, - - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function() { - var svgString = [], imageMarkup = [], strokeSvg, element = this._element, - x = -this.width / 2, y = -this.height / 2, clipPath = '', imageRendering = ''; - if (!element) { - return []; - } - if (this.hasCrop()) { - var clipPathId = fabric.Object.__uid++; - svgString.push( - '\n', - '\t\n', - '\n' - ); - clipPath = ' clip-path="url(#imageCrop_' + clipPathId + ')" '; - } - if (!this.imageSmoothing) { - imageRendering = '" image-rendering="optimizeSpeed'; - } - imageMarkup.push('\t\n'); - - if (this.stroke || this.strokeDashArray) { - var origFill = this.fill; - this.fill = null; - strokeSvg = [ - '\t\n' - ]; - this.fill = origFill; - } - if (this.paintFirst !== 'fill') { - svgString = svgString.concat(strokeSvg, imageMarkup); - } - else { - svgString = svgString.concat(imageMarkup, strokeSvg); - } - return svgString; - }, - /* _TO_SVG_END_ */ - - /** - * Returns source of an image - * @param {Boolean} filtered indicates if the src is needed for svg - * @return {String} Source of an image - */ - getSrc: function(filtered) { - var element = filtered ? this._element : this._originalElement; - if (element) { - if (element.toDataURL) { - return element.toDataURL(); - } - - if (this.srcFromAttribute) { - return element.getAttribute('src'); - } - else { - return element.src; - } - } - else { - return this.src || ''; - } - }, - - /** - * Sets source of an image - * @param {String} src Source string (URL) - * @param {Function} [callback] Callback is invoked when image has been loaded (and all filters have been applied) - * @param {Object} [options] Options object - * @param {String} [options.crossOrigin] crossOrigin value (one of "", "anonymous", "use-credentials") - * @see https://developer.mozilla.org/en-US/docs/HTML/CORS_settings_attributes - * @return {fabric.Image} thisArg - * @chainable - */ - setSrc: function(src, callback, options) { - fabric.util.loadImage(src, function(img, isError) { - this.setElement(img, options); - this._setWidthHeight(); - callback && callback(this, isError); - }, this, options && options.crossOrigin); - return this; - }, - - /** - * Returns string representation of an instance - * @return {String} String representation of an instance - */ - toString: function() { - return '#'; - }, - - applyResizeFilters: function() { - var filter = this.resizeFilter, - minimumScale = this.minimumScaleTrigger, - objectScale = this.getTotalObjectScaling(), - scaleX = objectScale.scaleX, - scaleY = objectScale.scaleY, - elementToFilter = this._filteredEl || this._originalElement; - if (this.group) { - this.set('dirty', true); - } - if (!filter || (scaleX > minimumScale && scaleY > minimumScale)) { - this._element = elementToFilter; - this._filterScalingX = 1; - this._filterScalingY = 1; - this._lastScaleX = scaleX; - this._lastScaleY = scaleY; - return; - } - if (!fabric.filterBackend) { - fabric.filterBackend = fabric.initFilterBackend(); - } - var canvasEl = fabric.util.createCanvasElement(), - cacheKey = this._filteredEl ? (this.cacheKey + '_filtered') : this.cacheKey, - sourceWidth = elementToFilter.width, sourceHeight = elementToFilter.height; - canvasEl.width = sourceWidth; - canvasEl.height = sourceHeight; - this._element = canvasEl; - this._lastScaleX = filter.scaleX = scaleX; - this._lastScaleY = filter.scaleY = scaleY; - fabric.filterBackend.applyFilters( - [filter], elementToFilter, sourceWidth, sourceHeight, this._element, cacheKey); - this._filterScalingX = canvasEl.width / this._originalElement.width; - this._filterScalingY = canvasEl.height / this._originalElement.height; - }, - - /** - * Applies filters assigned to this image (from "filters" array) or from filter param - * @method applyFilters - * @param {Array} filters to be applied - * @param {Boolean} forResizing specify if the filter operation is a resize operation - * @return {thisArg} return the fabric.Image object - * @chainable - */ - applyFilters: function(filters) { - - filters = filters || this.filters || []; - filters = filters.filter(function(filter) { return filter && !filter.isNeutralState(); }); - this.set('dirty', true); - - // needs to clear out or WEBGL will not resize correctly - this.removeTexture(this.cacheKey + '_filtered'); - - if (filters.length === 0) { - this._element = this._originalElement; - this._filteredEl = null; - this._filterScalingX = 1; - this._filterScalingY = 1; - return this; - } - - var imgElement = this._originalElement, - sourceWidth = imgElement.naturalWidth || imgElement.width, - sourceHeight = imgElement.naturalHeight || imgElement.height; - - if (this._element === this._originalElement) { - // if the element is the same we need to create a new element - var canvasEl = fabric.util.createCanvasElement(); - canvasEl.width = sourceWidth; - canvasEl.height = sourceHeight; - this._element = canvasEl; - this._filteredEl = canvasEl; - } - else { - // clear the existing element to get new filter data - // also dereference the eventual resized _element - this._element = this._filteredEl; - this._filteredEl.getContext('2d').clearRect(0, 0, sourceWidth, sourceHeight); - // we also need to resize again at next renderAll, so remove saved _lastScaleX/Y - this._lastScaleX = 1; - this._lastScaleY = 1; - } - if (!fabric.filterBackend) { - fabric.filterBackend = fabric.initFilterBackend(); - } - fabric.filterBackend.applyFilters( - filters, this._originalElement, sourceWidth, sourceHeight, this._element, this.cacheKey); - if (this._originalElement.width !== this._element.width || - this._originalElement.height !== this._element.height) { - this._filterScalingX = this._element.width / this._originalElement.width; - this._filterScalingY = this._element.height / this._originalElement.height; - } - return this; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function(ctx) { - fabric.util.setImageSmoothing(ctx, this.imageSmoothing); - if (this.isMoving !== true && this.resizeFilter && this._needsResize()) { - this.applyResizeFilters(); - } - this._stroke(ctx); - this._renderPaintInOrder(ctx); - }, - - /** - * Paint the cached copy of the object on the target context. - * it will set the imageSmoothing for the draw operation - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - drawCacheOnCanvas: function(ctx) { - fabric.util.setImageSmoothing(ctx, this.imageSmoothing); - fabric.Object.prototype.drawCacheOnCanvas.call(this, ctx); - }, - - /** - * Decide if the object should cache or not. Create its own cache level - * needsItsOwnCache should be used when the object drawing method requires - * a cache step. None of the fabric classes requires it. - * Generally you do not cache objects in groups because the group outside is cached. - * This is the special image version where we would like to avoid caching where possible. - * Essentially images do not benefit from caching. They may require caching, and in that - * case we do it. Also caching an image usually ends in a loss of details. - * A full performance audit should be done. - * @return {Boolean} - */ - shouldCache: function() { - return this.needsItsOwnCache(); - }, - - _renderFill: function(ctx) { - var elementToDraw = this._element; - if (!elementToDraw) { - return; - } - var scaleX = this._filterScalingX, scaleY = this._filterScalingY, - w = this.width, h = this.height, min = Math.min, max = Math.max, - // crop values cannot be lesser than 0. - cropX = max(this.cropX, 0), cropY = max(this.cropY, 0), - elWidth = elementToDraw.naturalWidth || elementToDraw.width, - elHeight = elementToDraw.naturalHeight || elementToDraw.height, - sX = cropX * scaleX, - sY = cropY * scaleY, - // the width height cannot exceed element width/height, starting from the crop offset. - sW = min(w * scaleX, elWidth - sX), - sH = min(h * scaleY, elHeight - sY), - x = -w / 2, y = -h / 2, - maxDestW = min(w, elWidth / scaleX - cropX), - maxDestH = min(h, elHeight / scaleY - cropY); - - elementToDraw && ctx.drawImage(elementToDraw, sX, sY, sW, sH, x, y, maxDestW, maxDestH); - }, - - /** - * needed to check if image needs resize - * @private - */ - _needsResize: function() { - var scale = this.getTotalObjectScaling(); - return (scale.scaleX !== this._lastScaleX || scale.scaleY !== this._lastScaleY); - }, - - /** - * @private - */ - _resetWidthHeight: function() { - this.set(this.getOriginalSize()); - }, - - /** - * The Image class's initialization method. This method is automatically - * called by the constructor. - * @private - * @param {HTMLImageElement|String} element The element representing the image - * @param {Object} [options] Options object - */ - _initElement: function(element, options) { - this.setElement(fabric.util.getById(element), options); - fabric.util.addClass(this.getElement(), fabric.Image.CSS_CANVAS); - }, - - /** - * @private - * @param {Object} [options] Options object - */ - _initConfig: function(options) { - options || (options = { }); - this.setOptions(options); - this._setWidthHeight(options); - }, - - /** - * @private - * @param {Array} filters to be initialized - * @param {Function} callback Callback to invoke when all fabric.Image.filters instances are created - */ - _initFilters: function(filters, callback) { - if (filters && filters.length) { - fabric.util.enlivenObjects(filters, function(enlivenedObjects) { - callback && callback(enlivenedObjects); - }, 'fabric.Image.filters'); - } - else { - callback && callback(); - } - }, - - /** - * @private - * Set the width and the height of the image object, using the element or the - * options. - * @param {Object} [options] Object with width/height properties - */ - _setWidthHeight: function(options) { - options || (options = { }); - var el = this.getElement(); - this.width = options.width || el.naturalWidth || el.width || 0; - this.height = options.height || el.naturalHeight || el.height || 0; - }, - - /** - * Calculate offset for center and scale factor for the image in order to respect - * the preserveAspectRatio attribute - * @private - * @return {Object} - */ - parsePreserveAspectRatioAttribute: function() { - var pAR = fabric.util.parsePreserveAspectRatioAttribute(this.preserveAspectRatio || ''), - rWidth = this._element.width, rHeight = this._element.height, - scaleX = 1, scaleY = 1, offsetLeft = 0, offsetTop = 0, cropX = 0, cropY = 0, - offset, pWidth = this.width, pHeight = this.height, parsedAttributes = { width: pWidth, height: pHeight }; - if (pAR && (pAR.alignX !== 'none' || pAR.alignY !== 'none')) { - if (pAR.meetOrSlice === 'meet') { - scaleX = scaleY = fabric.util.findScaleToFit(this._element, parsedAttributes); - offset = (pWidth - rWidth * scaleX) / 2; - if (pAR.alignX === 'Min') { - offsetLeft = -offset; - } - if (pAR.alignX === 'Max') { - offsetLeft = offset; - } - offset = (pHeight - rHeight * scaleY) / 2; - if (pAR.alignY === 'Min') { - offsetTop = -offset; - } - if (pAR.alignY === 'Max') { - offsetTop = offset; - } - } - if (pAR.meetOrSlice === 'slice') { - scaleX = scaleY = fabric.util.findScaleToCover(this._element, parsedAttributes); - offset = rWidth - pWidth / scaleX; - if (pAR.alignX === 'Mid') { - cropX = offset / 2; - } - if (pAR.alignX === 'Max') { - cropX = offset; - } - offset = rHeight - pHeight / scaleY; - if (pAR.alignY === 'Mid') { - cropY = offset / 2; - } - if (pAR.alignY === 'Max') { - cropY = offset; - } - rWidth = pWidth / scaleX; - rHeight = pHeight / scaleY; - } - } - else { - scaleX = pWidth / rWidth; - scaleY = pHeight / rHeight; - } - return { - width: rWidth, - height: rHeight, - scaleX: scaleX, - scaleY: scaleY, - offsetLeft: offsetLeft, - offsetTop: offsetTop, - cropX: cropX, - cropY: cropY - }; - } - }); - - /** - * Default CSS class name for canvas - * @static - * @type String - * @default - */ - fabric.Image.CSS_CANVAS = 'canvas-img'; - - /** - * Alias for getSrc - * @static - */ - fabric.Image.prototype.getSvgSrc = fabric.Image.prototype.getSrc; - - /** - * Creates an instance of fabric.Image from its object representation - * @static - * @param {Object} object Object to create an instance from - * @param {Function} callback Callback to invoke when an image instance is created - */ - fabric.Image.fromObject = function(_object, callback) { - var object = fabric.util.object.clone(_object); - fabric.util.loadImage(object.src, function(img, isError) { - if (isError) { - callback && callback(null, true); - return; - } - fabric.Image.prototype._initFilters.call(object, object.filters, function(filters) { - object.filters = filters || []; - fabric.Image.prototype._initFilters.call(object, [object.resizeFilter], function(resizeFilters) { - object.resizeFilter = resizeFilters[0]; - fabric.util.enlivenObjectEnlivables(object, object, function () { - var image = new fabric.Image(img, object); - callback(image, false); - }); - }); - }); - }, null, object.crossOrigin); - }; - - /** - * Creates an instance of fabric.Image from an URL string - * @static - * @param {String} url URL to create an image from - * @param {Function} [callback] Callback to invoke when image is created (newly created image is passed as a first argument). Second argument is a boolean indicating if an error occurred or not. - * @param {Object} [imgOptions] Options object - */ - fabric.Image.fromURL = function(url, callback, imgOptions) { - fabric.util.loadImage(url, function(img, isError) { - callback && callback(new fabric.Image(img, imgOptions), isError); - }, null, imgOptions && imgOptions.crossOrigin); - }; - - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Image.fromElement}) - * @static - * @see {@link http://www.w3.org/TR/SVG/struct.html#ImageElement} - */ - fabric.Image.ATTRIBUTE_NAMES = - fabric.SHARED_ATTRIBUTES.concat( - 'x y width height preserveAspectRatio xlink:href crossOrigin image-rendering'.split(' ') - ); - - /** - * Returns {@link fabric.Image} instance from an SVG element - * @static - * @param {SVGElement} element Element to parse - * @param {Object} [options] Options object - * @param {Function} callback Callback to execute when fabric.Image object is created - * @return {fabric.Image} Instance of fabric.Image - */ - fabric.Image.fromElement = function(element, callback, options) { - var parsedAttributes = fabric.parseAttributes(element, fabric.Image.ATTRIBUTE_NAMES); - fabric.Image.fromURL(parsedAttributes['xlink:href'], callback, - extend((options ? fabric.util.object.clone(options) : { }), parsedAttributes)); - }; - /* _FROM_SVG_END_ */ - -})(typeof exports !== 'undefined' ? exports : this); - - -fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { - - /** - * @private - * @return {Number} angle value - */ - _getAngleValueForStraighten: function() { - var angle = this.angle % 360; - if (angle > 0) { - return Math.round((angle - 1) / 90) * 90; - } - return Math.round(angle / 90) * 90; - }, - - /** - * Straightens an object (rotating it from current angle to one of 0, 90, 180, 270, etc. depending on which is closer) - * @return {fabric.Object} thisArg - * @chainable - */ - straighten: function() { - return this.rotate(this._getAngleValueForStraighten()); - }, - - /** - * Same as {@link fabric.Object.prototype.straighten} but with animation - * @param {Object} callbacks Object with callback functions - * @param {Function} [callbacks.onComplete] Invoked on completion - * @param {Function} [callbacks.onChange] Invoked on every step of animation - * @return {fabric.Object} thisArg - */ - fxStraighten: function(callbacks) { - callbacks = callbacks || { }; - - var empty = function() { }, - onComplete = callbacks.onComplete || empty, - onChange = callbacks.onChange || empty, - _this = this; - - return fabric.util.animate({ - target: this, - startValue: this.get('angle'), - endValue: this._getAngleValueForStraighten(), - duration: this.FX_DURATION, - onChange: function(value) { - _this.rotate(value); - onChange(); - }, - onComplete: function() { - _this.setCoords(); - onComplete(); - }, - }); - } -}); - -fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ { - - /** - * Straightens object, then rerenders canvas - * @param {fabric.Object} object Object to straighten - * @return {fabric.Canvas} thisArg - * @chainable - */ - straightenObject: function (object) { - object.straighten(); - this.requestRenderAll(); - return this; - }, - - /** - * Same as {@link fabric.Canvas.prototype.straightenObject}, but animated - * @param {fabric.Object} object Object to straighten - * @return {fabric.Canvas} thisArg - */ - fxStraightenObject: function (object) { - return object.fxStraighten({ - onChange: this.requestRenderAllBound - }); - } -}); - - -(function() { - - 'use strict'; - - /** - * Tests if webgl supports certain precision - * @param {WebGL} Canvas WebGL context to test on - * @param {String} Precision to test can be any of following: 'lowp', 'mediump', 'highp' - * @returns {Boolean} Whether the user's browser WebGL supports given precision. - */ - function testPrecision(gl, precision){ - var fragmentSource = 'precision ' + precision + ' float;\nvoid main(){}'; - var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER); - gl.shaderSource(fragmentShader, fragmentSource); - gl.compileShader(fragmentShader); - if (!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS)) { - return false; - } - return true; - } - - /** - * Indicate whether this filtering backend is supported by the user's browser. - * @param {Number} tileSize check if the tileSize is supported - * @returns {Boolean} Whether the user's browser supports WebGL. - */ - fabric.isWebglSupported = function(tileSize) { - if (fabric.isLikelyNode) { - return false; - } - tileSize = tileSize || fabric.WebglFilterBackend.prototype.tileSize; - var canvas = document.createElement('canvas'); - var gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl'); - var isSupported = false; - // eslint-disable-next-line - if (gl) { - fabric.maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE); - isSupported = fabric.maxTextureSize >= tileSize; - var precisions = ['highp', 'mediump', 'lowp']; - for (var i = 0; i < 3; i++){ - if (testPrecision(gl, precisions[i])){ - fabric.webGlPrecision = precisions[i]; - break; - }; - } - } - this.isSupported = isSupported; - return isSupported; - }; - - fabric.WebglFilterBackend = WebglFilterBackend; - - /** - * WebGL filter backend. - */ - function WebglFilterBackend(options) { - if (options && options.tileSize) { - this.tileSize = options.tileSize; - } - this.setupGLContext(this.tileSize, this.tileSize); - this.captureGPUInfo(); - }; - - WebglFilterBackend.prototype = /** @lends fabric.WebglFilterBackend.prototype */ { - - tileSize: 2048, - - /** - * Experimental. This object is a sort of repository of help layers used to avoid - * of recreating them during frequent filtering. If you are previewing a filter with - * a slider you probably do not want to create help layers every filter step. - * in this object there will be appended some canvases, created once, resized sometimes - * cleared never. Clearing is left to the developer. - **/ - resources: { - - }, - - /** - * Setup a WebGL context suitable for filtering, and bind any needed event handlers. - */ - setupGLContext: function(width, height) { - this.dispose(); - this.createWebGLCanvas(width, height); - // eslint-disable-next-line - this.aPosition = new Float32Array([0, 0, 0, 1, 1, 0, 1, 1]); - this.chooseFastestCopyGLTo2DMethod(width, height); - }, - - /** - * Pick a method to copy data from GL context to 2d canvas. In some browsers using - * putImageData is faster than drawImage for that specific operation. - */ - chooseFastestCopyGLTo2DMethod: function(width, height) { - var canMeasurePerf = typeof window.performance !== 'undefined', canUseImageData; - try { - new ImageData(1, 1); - canUseImageData = true; - } - catch (e) { - canUseImageData = false; - } - // eslint-disable-next-line no-undef - var canUseArrayBuffer = typeof ArrayBuffer !== 'undefined'; - // eslint-disable-next-line no-undef - var canUseUint8Clamped = typeof Uint8ClampedArray !== 'undefined'; - - if (!(canMeasurePerf && canUseImageData && canUseArrayBuffer && canUseUint8Clamped)) { - return; - } - - var targetCanvas = fabric.util.createCanvasElement(); - // eslint-disable-next-line no-undef - var imageBuffer = new ArrayBuffer(width * height * 4); - if (fabric.forceGLPutImageData) { - this.imageBuffer = imageBuffer; - this.copyGLTo2D = copyGLTo2DPutImageData; - return; - } - var testContext = { - imageBuffer: imageBuffer, - destinationWidth: width, - destinationHeight: height, - targetCanvas: targetCanvas - }; - var startTime, drawImageTime, putImageDataTime; - targetCanvas.width = width; - targetCanvas.height = height; - - startTime = window.performance.now(); - copyGLTo2DDrawImage.call(testContext, this.gl, testContext); - drawImageTime = window.performance.now() - startTime; - - startTime = window.performance.now(); - copyGLTo2DPutImageData.call(testContext, this.gl, testContext); - putImageDataTime = window.performance.now() - startTime; - - if (drawImageTime > putImageDataTime) { - this.imageBuffer = imageBuffer; - this.copyGLTo2D = copyGLTo2DPutImageData; - } - else { - this.copyGLTo2D = copyGLTo2DDrawImage; - } - }, - - /** - * Create a canvas element and associated WebGL context and attaches them as - * class properties to the GLFilterBackend class. - */ - createWebGLCanvas: function(width, height) { - var canvas = fabric.util.createCanvasElement(); - canvas.width = width; - canvas.height = height; - var glOptions = { - alpha: true, - premultipliedAlpha: false, - depth: false, - stencil: false, - antialias: false - }, - gl = canvas.getContext('webgl', glOptions); - if (!gl) { - gl = canvas.getContext('experimental-webgl', glOptions); - } - if (!gl) { - return; - } - gl.clearColor(0, 0, 0, 0); - // this canvas can fire webglcontextlost and webglcontextrestored - this.canvas = canvas; - this.gl = gl; - }, - - /** - * Attempts to apply the requested filters to the source provided, drawing the filtered output - * to the provided target canvas. - * - * @param {Array} filters The filters to apply. - * @param {HTMLImageElement|HTMLCanvasElement} source The source to be filtered. - * @param {Number} width The width of the source input. - * @param {Number} height The height of the source input. - * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn. - * @param {String|undefined} cacheKey A key used to cache resources related to the source. If - * omitted, caching will be skipped. - */ - applyFilters: function(filters, source, width, height, targetCanvas, cacheKey) { - var gl = this.gl; - var cachedTexture; - if (cacheKey) { - cachedTexture = this.getCachedTexture(cacheKey, source); - } - var pipelineState = { - originalWidth: source.width || source.originalWidth, - originalHeight: source.height || source.originalHeight, - sourceWidth: width, - sourceHeight: height, - destinationWidth: width, - destinationHeight: height, - context: gl, - sourceTexture: this.createTexture(gl, width, height, !cachedTexture && source), - targetTexture: this.createTexture(gl, width, height), - originalTexture: cachedTexture || - this.createTexture(gl, width, height, !cachedTexture && source), - passes: filters.length, - webgl: true, - aPosition: this.aPosition, - programCache: this.programCache, - pass: 0, - filterBackend: this, - targetCanvas: targetCanvas - }; - var tempFbo = gl.createFramebuffer(); - gl.bindFramebuffer(gl.FRAMEBUFFER, tempFbo); - filters.forEach(function(filter) { filter && filter.applyTo(pipelineState); }); - resizeCanvasIfNeeded(pipelineState); - this.copyGLTo2D(gl, pipelineState); - gl.bindTexture(gl.TEXTURE_2D, null); - gl.deleteTexture(pipelineState.sourceTexture); - gl.deleteTexture(pipelineState.targetTexture); - gl.deleteFramebuffer(tempFbo); - targetCanvas.getContext('2d').setTransform(1, 0, 0, 1, 0, 0); - return pipelineState; - }, - - /** - * Detach event listeners, remove references, and clean up caches. - */ - dispose: function() { - if (this.canvas) { - this.canvas = null; - this.gl = null; - } - this.clearWebGLCaches(); - }, - - /** - * Wipe out WebGL-related caches. - */ - clearWebGLCaches: function() { - this.programCache = {}; - this.textureCache = {}; - }, - - /** - * Create a WebGL texture object. - * - * Accepts specific dimensions to initialize the texture to or a source image. - * - * @param {WebGLRenderingContext} gl The GL context to use for creating the texture. - * @param {Number} width The width to initialize the texture at. - * @param {Number} height The height to initialize the texture. - * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source for the texture data. - * @returns {WebGLTexture} - */ - createTexture: function(gl, width, height, textureImageSource) { - var texture = gl.createTexture(); - gl.bindTexture(gl.TEXTURE_2D, texture); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); - if (textureImageSource) { - gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, textureImageSource); - } - else { - gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); - } - return texture; - }, - - /** - * Can be optionally used to get a texture from the cache array - * - * If an existing texture is not found, a new texture is created and cached. - * - * @param {String} uniqueId A cache key to use to find an existing texture. - * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source to use to create the - * texture cache entry if one does not already exist. - */ - getCachedTexture: function(uniqueId, textureImageSource) { - if (this.textureCache[uniqueId]) { - return this.textureCache[uniqueId]; - } - else { - var texture = this.createTexture( - this.gl, textureImageSource.width, textureImageSource.height, textureImageSource); - this.textureCache[uniqueId] = texture; - return texture; - } - }, - - /** - * Clear out cached resources related to a source image that has been - * filtered previously. - * - * @param {String} cacheKey The cache key provided when the source image was filtered. - */ - evictCachesForKey: function(cacheKey) { - if (this.textureCache[cacheKey]) { - this.gl.deleteTexture(this.textureCache[cacheKey]); - delete this.textureCache[cacheKey]; - } - }, - - copyGLTo2D: copyGLTo2DDrawImage, - - /** - * Attempt to extract GPU information strings from a WebGL context. - * - * Useful information when debugging or blacklisting specific GPUs. - * - * @returns {Object} A GPU info object with renderer and vendor strings. - */ - captureGPUInfo: function() { - if (this.gpuInfo) { - return this.gpuInfo; - } - var gl = this.gl, gpuInfo = { renderer: '', vendor: '' }; - if (!gl) { - return gpuInfo; - } - var ext = gl.getExtension('WEBGL_debug_renderer_info'); - if (ext) { - var renderer = gl.getParameter(ext.UNMASKED_RENDERER_WEBGL); - var vendor = gl.getParameter(ext.UNMASKED_VENDOR_WEBGL); - if (renderer) { - gpuInfo.renderer = renderer.toLowerCase(); - } - if (vendor) { - gpuInfo.vendor = vendor.toLowerCase(); - } - } - this.gpuInfo = gpuInfo; - return gpuInfo; - }, - }; -})(); - -function resizeCanvasIfNeeded(pipelineState) { - var targetCanvas = pipelineState.targetCanvas, - width = targetCanvas.width, height = targetCanvas.height, - dWidth = pipelineState.destinationWidth, - dHeight = pipelineState.destinationHeight; - - if (width !== dWidth || height !== dHeight) { - targetCanvas.width = dWidth; - targetCanvas.height = dHeight; - } -} - -/** - * Copy an input WebGL canvas on to an output 2D canvas. - * - * The WebGL canvas is assumed to be upside down, with the top-left pixel of the - * desired output image appearing in the bottom-left corner of the WebGL canvas. - * - * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from. - * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to. - * @param {Object} pipelineState The 2D target canvas to copy on to. - */ -function copyGLTo2DDrawImage(gl, pipelineState) { - var glCanvas = gl.canvas, targetCanvas = pipelineState.targetCanvas, - ctx = targetCanvas.getContext('2d'); - ctx.translate(0, targetCanvas.height); // move it down again - ctx.scale(1, -1); // vertical flip - // where is my image on the big glcanvas? - var sourceY = glCanvas.height - targetCanvas.height; - ctx.drawImage(glCanvas, 0, sourceY, targetCanvas.width, targetCanvas.height, 0, 0, - targetCanvas.width, targetCanvas.height); -} - -/** - * Copy an input WebGL canvas on to an output 2D canvas using 2d canvas' putImageData - * API. Measurably faster than using ctx.drawImage in Firefox (version 54 on OSX Sierra). - * - * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from. - * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to. - * @param {Object} pipelineState The 2D target canvas to copy on to. - */ -function copyGLTo2DPutImageData(gl, pipelineState) { - var targetCanvas = pipelineState.targetCanvas, ctx = targetCanvas.getContext('2d'), - dWidth = pipelineState.destinationWidth, - dHeight = pipelineState.destinationHeight, - numBytes = dWidth * dHeight * 4; - - // eslint-disable-next-line no-undef - var u8 = new Uint8Array(this.imageBuffer, 0, numBytes); - // eslint-disable-next-line no-undef - var u8Clamped = new Uint8ClampedArray(this.imageBuffer, 0, numBytes); - - gl.readPixels(0, 0, dWidth, dHeight, gl.RGBA, gl.UNSIGNED_BYTE, u8); - var imgData = new ImageData(u8Clamped, dWidth, dHeight); - ctx.putImageData(imgData, 0, 0); -} - - -(function() { - - 'use strict'; - - var noop = function() {}; - - fabric.Canvas2dFilterBackend = Canvas2dFilterBackend; - - /** - * Canvas 2D filter backend. - */ - function Canvas2dFilterBackend() {}; - - Canvas2dFilterBackend.prototype = /** @lends fabric.Canvas2dFilterBackend.prototype */ { - evictCachesForKey: noop, - dispose: noop, - clearWebGLCaches: noop, - - /** - * Experimental. This object is a sort of repository of help layers used to avoid - * of recreating them during frequent filtering. If you are previewing a filter with - * a slider you probably do not want to create help layers every filter step. - * in this object there will be appended some canvases, created once, resized sometimes - * cleared never. Clearing is left to the developer. - **/ - resources: { - - }, - - /** - * Apply a set of filters against a source image and draw the filtered output - * to the provided destination canvas. - * - * @param {EnhancedFilter} filters The filter to apply. - * @param {HTMLImageElement|HTMLCanvasElement} sourceElement The source to be filtered. - * @param {Number} sourceWidth The width of the source input. - * @param {Number} sourceHeight The height of the source input. - * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn. - */ - applyFilters: function(filters, sourceElement, sourceWidth, sourceHeight, targetCanvas) { - var ctx = targetCanvas.getContext('2d'); - ctx.drawImage(sourceElement, 0, 0, sourceWidth, sourceHeight); - var imageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight); - var originalImageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight); - var pipelineState = { - sourceWidth: sourceWidth, - sourceHeight: sourceHeight, - imageData: imageData, - originalEl: sourceElement, - originalImageData: originalImageData, - canvasEl: targetCanvas, - ctx: ctx, - filterBackend: this, - }; - filters.forEach(function(filter) { filter.applyTo(pipelineState); }); - if (pipelineState.imageData.width !== sourceWidth || pipelineState.imageData.height !== sourceHeight) { - targetCanvas.width = pipelineState.imageData.width; - targetCanvas.height = pipelineState.imageData.height; - } - ctx.putImageData(pipelineState.imageData, 0, 0); - return pipelineState; - }, - - }; -})(); - - -/** - * @namespace fabric.Image.filters - * @memberOf fabric.Image - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#image_filters} - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - */ -fabric.Image = fabric.Image || { }; -fabric.Image.filters = fabric.Image.filters || { }; - -/** - * Root filter class from which all filter classes inherit from - * @class fabric.Image.filters.BaseFilter - * @memberOf fabric.Image.filters - */ -fabric.Image.filters.BaseFilter = fabric.util.createClass(/** @lends fabric.Image.filters.BaseFilter.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'BaseFilter', - - /** - * Array of attributes to send with buffers. do not modify - * @private - */ - - vertexSource: 'attribute vec2 aPosition;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vTexCoord = aPosition;\n' + - 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\n' + - '}', - - fragmentSource: 'precision highp float;\n' + - 'varying vec2 vTexCoord;\n' + - 'uniform sampler2D uTexture;\n' + - 'void main() {\n' + - 'gl_FragColor = texture2D(uTexture, vTexCoord);\n' + - '}', - - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function(options) { - if (options) { - this.setOptions(options); - } - }, - - /** - * Sets filter's properties from options - * @param {Object} [options] Options object - */ - setOptions: function(options) { - for (var prop in options) { - this[prop] = options[prop]; - } - }, - - /** - * Compile this filter's shader program. - * - * @param {WebGLRenderingContext} gl The GL canvas context to use for shader compilation. - * @param {String} fragmentSource fragmentShader source for compilation - * @param {String} vertexSource vertexShader source for compilation - */ - createProgram: function(gl, fragmentSource, vertexSource) { - fragmentSource = fragmentSource || this.fragmentSource; - vertexSource = vertexSource || this.vertexSource; - if (fabric.webGlPrecision !== 'highp'){ - fragmentSource = fragmentSource.replace( - /precision highp float/g, - 'precision ' + fabric.webGlPrecision + ' float' - ); - } - var vertexShader = gl.createShader(gl.VERTEX_SHADER); - gl.shaderSource(vertexShader, vertexSource); - gl.compileShader(vertexShader); - if (!gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS)) { - throw new Error( - // eslint-disable-next-line prefer-template - 'Vertex shader compile error for ' + this.type + ': ' + - gl.getShaderInfoLog(vertexShader) - ); - } - - var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER); - gl.shaderSource(fragmentShader, fragmentSource); - gl.compileShader(fragmentShader); - if (!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS)) { - throw new Error( - // eslint-disable-next-line prefer-template - 'Fragment shader compile error for ' + this.type + ': ' + - gl.getShaderInfoLog(fragmentShader) - ); - } - - var program = gl.createProgram(); - gl.attachShader(program, vertexShader); - gl.attachShader(program, fragmentShader); - gl.linkProgram(program); - if (!gl.getProgramParameter(program, gl.LINK_STATUS)) { - throw new Error( - // eslint-disable-next-line prefer-template - 'Shader link error for "${this.type}" ' + - gl.getProgramInfoLog(program) - ); - } - - var attributeLocations = this.getAttributeLocations(gl, program); - var uniformLocations = this.getUniformLocations(gl, program) || { }; - uniformLocations.uStepW = gl.getUniformLocation(program, 'uStepW'); - uniformLocations.uStepH = gl.getUniformLocation(program, 'uStepH'); - return { - program: program, - attributeLocations: attributeLocations, - uniformLocations: uniformLocations - }; - }, - - /** - * Return a map of attribute names to WebGLAttributeLocation objects. - * - * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. - * @param {WebGLShaderProgram} program The shader program from which to take attribute locations. - * @returns {Object} A map of attribute names to attribute locations. - */ - getAttributeLocations: function(gl, program) { - return { - aPosition: gl.getAttribLocation(program, 'aPosition'), - }; - }, - - /** - * Return a map of uniform names to WebGLUniformLocation objects. - * - * Intended to be overridden by subclasses. - * - * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. - * @param {WebGLShaderProgram} program The shader program from which to take uniform locations. - * @returns {Object} A map of uniform names to uniform locations. - */ - getUniformLocations: function (/* gl, program */) { - // in case i do not need any special uniform i need to return an empty object - return { }; - }, - - /** - * Send attribute data from this filter to its shader program on the GPU. - * - * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. - * @param {Object} attributeLocations A map of shader attribute names to their locations. - */ - sendAttributeData: function(gl, attributeLocations, aPositionData) { - var attributeLocation = attributeLocations.aPosition; - var buffer = gl.createBuffer(); - gl.bindBuffer(gl.ARRAY_BUFFER, buffer); - gl.enableVertexAttribArray(attributeLocation); - gl.vertexAttribPointer(attributeLocation, 2, gl.FLOAT, false, 0, 0); - gl.bufferData(gl.ARRAY_BUFFER, aPositionData, gl.STATIC_DRAW); - }, - - _setupFrameBuffer: function(options) { - var gl = options.context, width, height; - if (options.passes > 1) { - width = options.destinationWidth; - height = options.destinationHeight; - if (options.sourceWidth !== width || options.sourceHeight !== height) { - gl.deleteTexture(options.targetTexture); - options.targetTexture = options.filterBackend.createTexture(gl, width, height); - } - gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, - options.targetTexture, 0); - } - else { - // draw last filter on canvas and not to framebuffer. - gl.bindFramebuffer(gl.FRAMEBUFFER, null); - gl.finish(); - } - }, - - _swapTextures: function(options) { - options.passes--; - options.pass++; - var temp = options.targetTexture; - options.targetTexture = options.sourceTexture; - options.sourceTexture = temp; - }, - - /** - * Generic isNeutral implementation for one parameter based filters. - * Used only in image applyFilters to discard filters that will not have an effect - * on the image - * Other filters may need their own version ( ColorMatrix, HueRotation, gamma, ComposedFilter ) - * @param {Object} options - **/ - isNeutralState: function(/* options */) { - var main = this.mainParameter, - _class = fabric.Image.filters[this.type].prototype; - if (main) { - if (Array.isArray(_class[main])) { - for (var i = _class[main].length; i--;) { - if (this[main][i] !== _class[main][i]) { - return false; - } - } - return true; - } - else { - return _class[main] === this[main]; - } - } - else { - return false; - } - }, - - /** - * Apply this filter to the input image data provided. - * - * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be executed - * @param {Boolean} options.webgl Whether to use webgl to render the filter. - * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. - * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - applyTo: function(options) { - if (options.webgl) { - this._setupFrameBuffer(options); - this.applyToWebGL(options); - this._swapTextures(options); - } - else { - this.applyTo2d(options); - } - }, - - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function(options) { - if (!options.programCache.hasOwnProperty(this.type)) { - options.programCache[this.type] = this.createProgram(options.context); - } - return options.programCache[this.type]; - }, - - /** - * Apply this filter using webgl. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be executed - * @param {Boolean} options.webgl Whether to use webgl to render the filter. - * @param {WebGLTexture} options.originalTexture The texture of the original input image. - * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. - * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - applyToWebGL: function(options) { - var gl = options.context; - var shader = this.retrieveShader(options); - if (options.pass === 0 && options.originalTexture) { - gl.bindTexture(gl.TEXTURE_2D, options.originalTexture); - } - else { - gl.bindTexture(gl.TEXTURE_2D, options.sourceTexture); - } - gl.useProgram(shader.program); - this.sendAttributeData(gl, shader.attributeLocations, options.aPosition); - - gl.uniform1f(shader.uniformLocations.uStepW, 1 / options.sourceWidth); - gl.uniform1f(shader.uniformLocations.uStepH, 1 / options.sourceHeight); - - this.sendUniformData(gl, shader.uniformLocations); - gl.viewport(0, 0, options.destinationWidth, options.destinationHeight); - gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4); - }, - - bindAdditionalTexture: function(gl, texture, textureUnit) { - gl.activeTexture(textureUnit); - gl.bindTexture(gl.TEXTURE_2D, texture); - // reset active texture to 0 as usual - gl.activeTexture(gl.TEXTURE0); - }, - - unbindAdditionalTexture: function(gl, textureUnit) { - gl.activeTexture(textureUnit); - gl.bindTexture(gl.TEXTURE_2D, null); - gl.activeTexture(gl.TEXTURE0); - }, - - getMainParameter: function() { - return this[this.mainParameter]; - }, - - setMainParameter: function(value) { - this[this.mainParameter] = value; - }, - - /** - * Send uniform data from this filter to its shader program on the GPU. - * - * Intended to be overridden by subclasses. - * - * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. - * @param {Object} uniformLocations A map of shader uniform names to their locations. - */ - sendUniformData: function(/* gl, uniformLocations */) { - // Intentionally left blank. Override me in subclasses. - }, - - /** - * If needed by a 2d filter, this functions can create an helper canvas to be used - * remember that options.targetCanvas is available for use till end of chain. - */ - createHelpLayer: function(options) { - if (!options.helpLayer) { - var helpLayer = document.createElement('canvas'); - helpLayer.width = options.sourceWidth; - helpLayer.height = options.sourceHeight; - options.helpLayer = helpLayer; - } - }, - - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function() { - var object = { type: this.type }, mainP = this.mainParameter; - if (mainP) { - object[mainP] = this[mainP]; - } - return object; - }, - - /** - * Returns a JSON representation of an instance - * @return {Object} JSON - */ - toJSON: function() { - // delegate, not alias - return this.toObject(); - } -}); - -fabric.Image.filters.BaseFilter.fromObject = function(object, callback) { - var filter = new fabric.Image.filters[object.type](object); - callback && callback(filter); - return filter; -}; - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Color Matrix filter class - * @class fabric.Image.filters.ColorMatrix - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.ColorMatrix#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @see {@Link http://www.webwasp.co.uk/tutorials/219/Color_Matrix_Filter.php} - * @see {@Link http://phoboslab.org/log/2013/11/fast-image-filters-with-webgl} - * @example Kodachrome filter - * var filter = new fabric.Image.filters.ColorMatrix({ - * matrix: [ - 1.1285582396593525, -0.3967382283601348, -0.03992559172921793, 0, 63.72958762196502, - -0.16404339962244616, 1.0835251566291304, -0.05498805115633132, 0, 24.732407896706203, - -0.16786010706155763, -0.5603416277695248, 1.6014850761964943, 0, 35.62982807460946, - 0, 0, 0, 1, 0 - ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.ColorMatrix = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.ColorMatrix.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'ColorMatrix', - - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'varying vec2 vTexCoord;\n' + - 'uniform mat4 uColorMatrix;\n' + - 'uniform vec4 uConstants;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'color *= uColorMatrix;\n' + - 'color += uConstants;\n' + - 'gl_FragColor = color;\n' + - '}', - - /** - * Colormatrix for pixels. - * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning - * outside the -1, 1 range. - * 0.0039215686 is the part of 1 that get translated to 1 in 2d - * @param {Array} matrix array of 20 numbers. - * @default - */ - matrix: [ - 1, 0, 0, 0, 0, - 0, 1, 0, 0, 0, - 0, 0, 1, 0, 0, - 0, 0, 0, 1, 0 - ], - - mainParameter: 'matrix', - - /** - * Lock the colormatrix on the color part, skipping alpha, mainly for non webgl scenario - * to save some calculation - * @type Boolean - * @default true - */ - colorsOnly: true, - - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function(options) { - this.callSuper('initialize', options); - // create a new array instead mutating the prototype with push - this.matrix = this.matrix.slice(0); - }, - - /** - * Apply the ColorMatrix operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function(options) { - var imageData = options.imageData, - data = imageData.data, - iLen = data.length, - m = this.matrix, - r, g, b, a, i, colorsOnly = this.colorsOnly; - - for (i = 0; i < iLen; i += 4) { - r = data[i]; - g = data[i + 1]; - b = data[i + 2]; - if (colorsOnly) { - data[i] = r * m[0] + g * m[1] + b * m[2] + m[4] * 255; - data[i + 1] = r * m[5] + g * m[6] + b * m[7] + m[9] * 255; - data[i + 2] = r * m[10] + g * m[11] + b * m[12] + m[14] * 255; - } - else { - a = data[i + 3]; - data[i] = r * m[0] + g * m[1] + b * m[2] + a * m[3] + m[4] * 255; - data[i + 1] = r * m[5] + g * m[6] + b * m[7] + a * m[8] + m[9] * 255; - data[i + 2] = r * m[10] + g * m[11] + b * m[12] + a * m[13] + m[14] * 255; - data[i + 3] = r * m[15] + g * m[16] + b * m[17] + a * m[18] + m[19] * 255; - } - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uColorMatrix: gl.getUniformLocation(program, 'uColorMatrix'), - uConstants: gl.getUniformLocation(program, 'uConstants'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - var m = this.matrix, - matrix = [ - m[0], m[1], m[2], m[3], - m[5], m[6], m[7], m[8], - m[10], m[11], m[12], m[13], - m[15], m[16], m[17], m[18] - ], - constants = [m[4], m[9], m[14], m[19]]; - gl.uniformMatrix4fv(uniformLocations.uColorMatrix, false, matrix); - gl.uniform4fv(uniformLocations.uConstants, constants); - }, - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} [callback] function to invoke after filter creation - * @return {fabric.Image.filters.ColorMatrix} Instance of fabric.Image.filters.ColorMatrix - */ - fabric.Image.filters.ColorMatrix.fromObject = fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Brightness filter class - * @class fabric.Image.filters.Brightness - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Brightness#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Brightness({ - * brightness: 0.05 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Brightness = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Brightness.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Brightness', - - /** - * Fragment source for the brightness program - */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uBrightness;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'color.rgb += uBrightness;\n' + - 'gl_FragColor = color;\n' + - '}', - - /** - * Brightness value, from -1 to 1. - * translated to -255 to 255 for 2d - * 0.0039215686 is the part of 1 that get translated to 1 in 2d - * @param {Number} brightness - * @default - */ - brightness: 0, - - /** - * Describe the property that is the filter parameter - * @param {String} m - * @default - */ - mainParameter: 'brightness', - - /** - * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function(options) { - if (this.brightness === 0) { - return; - } - var imageData = options.imageData, - data = imageData.data, i, len = data.length, - brightness = Math.round(this.brightness * 255); - for (i = 0; i < len; i += 4) { - data[i] = data[i] + brightness; - data[i + 1] = data[i + 1] + brightness; - data[i + 2] = data[i + 2] + brightness; - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uBrightness: gl.getUniformLocation(program, 'uBrightness'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform1f(uniformLocations.uBrightness, this.brightness); - }, - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Brightness} Instance of fabric.Image.filters.Brightness - */ - fabric.Image.filters.Brightness.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - extend = fabric.util.object.extend, - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Adapted from html5rocks article - * @class fabric.Image.filters.Convolute - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Convolute#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example Sharpen filter - * var filter = new fabric.Image.filters.Convolute({ - * matrix: [ 0, -1, 0, - * -1, 5, -1, - * 0, -1, 0 ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - * @example Blur filter - * var filter = new fabric.Image.filters.Convolute({ - * matrix: [ 1/9, 1/9, 1/9, - * 1/9, 1/9, 1/9, - * 1/9, 1/9, 1/9 ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - * @example Emboss filter - * var filter = new fabric.Image.filters.Convolute({ - * matrix: [ 1, 1, 1, - * 1, 0.7, -1, - * -1, -1, -1 ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - * @example Emboss filter with opaqueness - * var filter = new fabric.Image.filters.Convolute({ - * opaque: true, - * matrix: [ 1, 1, 1, - * 1, 0.7, -1, - * -1, -1, -1 ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.Convolute = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Convolute.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Convolute', - - /* - * Opaque value (true/false) - */ - opaque: false, - - /* - * matrix for the filter, max 9x9 - */ - matrix: [0, 0, 0, 0, 1, 0, 0, 0, 0], - - /** - * Fragment source for the brightness program - */ - fragmentSource: { - Convolute_3_1: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[9];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 0);\n' + - 'for (float h = 0.0; h < 3.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 3.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 1), uStepH * (h - 1));\n' + - 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 3.0 + w)];\n' + - '}\n' + - '}\n' + - 'gl_FragColor = color;\n' + - '}', - Convolute_3_0: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[9];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 1);\n' + - 'for (float h = 0.0; h < 3.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 3.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 1.0), uStepH * (h - 1.0));\n' + - 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 3.0 + w)];\n' + - '}\n' + - '}\n' + - 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.a = alpha;\n' + - '}', - Convolute_5_1: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[25];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 0);\n' + - 'for (float h = 0.0; h < 5.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 5.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\n' + - 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 5.0 + w)];\n' + - '}\n' + - '}\n' + - 'gl_FragColor = color;\n' + - '}', - Convolute_5_0: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[25];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 1);\n' + - 'for (float h = 0.0; h < 5.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 5.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\n' + - 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 5.0 + w)];\n' + - '}\n' + - '}\n' + - 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.a = alpha;\n' + - '}', - Convolute_7_1: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[49];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 0);\n' + - 'for (float h = 0.0; h < 7.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 7.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\n' + - 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 7.0 + w)];\n' + - '}\n' + - '}\n' + - 'gl_FragColor = color;\n' + - '}', - Convolute_7_0: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[49];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 1);\n' + - 'for (float h = 0.0; h < 7.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 7.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\n' + - 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 7.0 + w)];\n' + - '}\n' + - '}\n' + - 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.a = alpha;\n' + - '}', - Convolute_9_1: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[81];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 0);\n' + - 'for (float h = 0.0; h < 9.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 9.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\n' + - 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 9.0 + w)];\n' + - '}\n' + - '}\n' + - 'gl_FragColor = color;\n' + - '}', - Convolute_9_0: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[81];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 1);\n' + - 'for (float h = 0.0; h < 9.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 9.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\n' + - 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 9.0 + w)];\n' + - '}\n' + - '}\n' + - 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.a = alpha;\n' + - '}', - }, - - /** - * Constructor - * @memberOf fabric.Image.filters.Convolute.prototype - * @param {Object} [options] Options object - * @param {Boolean} [options.opaque=false] Opaque value (true/false) - * @param {Array} [options.matrix] Filter matrix - */ - - - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function(options) { - var size = Math.sqrt(this.matrix.length); - var cacheKey = this.type + '_' + size + '_' + (this.opaque ? 1 : 0); - var shaderSource = this.fragmentSource[cacheKey]; - if (!options.programCache.hasOwnProperty(cacheKey)) { - options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); - } - return options.programCache[cacheKey]; - }, - - /** - * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function(options) { - var imageData = options.imageData, - data = imageData.data, - weights = this.matrix, - side = Math.round(Math.sqrt(weights.length)), - halfSide = Math.floor(side / 2), - sw = imageData.width, - sh = imageData.height, - output = options.ctx.createImageData(sw, sh), - dst = output.data, - // go through the destination image pixels - alphaFac = this.opaque ? 1 : 0, - r, g, b, a, dstOff, - scx, scy, srcOff, wt, - x, y, cx, cy; - - for (y = 0; y < sh; y++) { - for (x = 0; x < sw; x++) { - dstOff = (y * sw + x) * 4; - // calculate the weighed sum of the source image pixels that - // fall under the convolution matrix - r = 0; g = 0; b = 0; a = 0; - - for (cy = 0; cy < side; cy++) { - for (cx = 0; cx < side; cx++) { - scy = y + cy - halfSide; - scx = x + cx - halfSide; - - // eslint-disable-next-line max-depth - if (scy < 0 || scy >= sh || scx < 0 || scx >= sw) { - continue; - } - - srcOff = (scy * sw + scx) * 4; - wt = weights[cy * side + cx]; - - r += data[srcOff] * wt; - g += data[srcOff + 1] * wt; - b += data[srcOff + 2] * wt; - // eslint-disable-next-line max-depth - if (!alphaFac) { - a += data[srcOff + 3] * wt; - } - } - } - dst[dstOff] = r; - dst[dstOff + 1] = g; - dst[dstOff + 2] = b; - if (!alphaFac) { - dst[dstOff + 3] = a; - } - else { - dst[dstOff + 3] = data[dstOff + 3]; - } - } - } - options.imageData = output; - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uMatrix: gl.getUniformLocation(program, 'uMatrix'), - uOpaque: gl.getUniformLocation(program, 'uOpaque'), - uHalfSize: gl.getUniformLocation(program, 'uHalfSize'), - uSize: gl.getUniformLocation(program, 'uSize'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform1fv(uniformLocations.uMatrix, this.matrix); - }, - - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function() { - return extend(this.callSuper('toObject'), { - opaque: this.opaque, - matrix: this.matrix - }); - } - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Convolute} Instance of fabric.Image.filters.Convolute - */ - fabric.Image.filters.Convolute.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Grayscale image filter class - * @class fabric.Image.filters.Grayscale - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Grayscale(); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Grayscale = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Grayscale.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Grayscale', - - fragmentSource: { - average: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'float average = (color.r + color.b + color.g) / 3.0;\n' + - 'gl_FragColor = vec4(average, average, average, color.a);\n' + - '}', - lightness: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform int uMode;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 col = texture2D(uTexture, vTexCoord);\n' + - 'float average = (max(max(col.r, col.g),col.b) + min(min(col.r, col.g),col.b)) / 2.0;\n' + - 'gl_FragColor = vec4(average, average, average, col.a);\n' + - '}', - luminosity: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform int uMode;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 col = texture2D(uTexture, vTexCoord);\n' + - 'float average = 0.21 * col.r + 0.72 * col.g + 0.07 * col.b;\n' + - 'gl_FragColor = vec4(average, average, average, col.a);\n' + - '}', - }, - - - /** - * Grayscale mode, between 'average', 'lightness', 'luminosity' - * @param {String} type - * @default - */ - mode: 'average', - - mainParameter: 'mode', - - /** - * Apply the Grayscale operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function(options) { - var imageData = options.imageData, - data = imageData.data, i, - len = data.length, value, - mode = this.mode; - for (i = 0; i < len; i += 4) { - if (mode === 'average') { - value = (data[i] + data[i + 1] + data[i + 2]) / 3; - } - else if (mode === 'lightness') { - value = (Math.min(data[i], data[i + 1], data[i + 2]) + - Math.max(data[i], data[i + 1], data[i + 2])) / 2; - } - else if (mode === 'luminosity') { - value = 0.21 * data[i] + 0.72 * data[i + 1] + 0.07 * data[i + 2]; - } - data[i] = value; - data[i + 1] = value; - data[i + 2] = value; - } - }, - - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function(options) { - var cacheKey = this.type + '_' + this.mode; - if (!options.programCache.hasOwnProperty(cacheKey)) { - var shaderSource = this.fragmentSource[this.mode]; - options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); - } - return options.programCache[cacheKey]; - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uMode: gl.getUniformLocation(program, 'uMode'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - // default average mode. - var mode = 1; - gl.uniform1i(uniformLocations.uMode, mode); - }, - - /** - * Grayscale filter isNeutralState implementation - * The filter is never neutral - * on the image - **/ - isNeutralState: function() { - return false; - }, - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Grayscale} Instance of fabric.Image.filters.Grayscale - */ - fabric.Image.filters.Grayscale.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Invert filter class - * @class fabric.Image.filters.Invert - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Invert(); - * object.filters.push(filter); - * object.applyFilters(canvas.renderAll.bind(canvas)); - */ - filters.Invert = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Invert.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Invert', - - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform int uInvert;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'if (uInvert == 1) {\n' + - 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,color.a);\n' + - '} else {\n' + - 'gl_FragColor = color;\n' + - '}\n' + - '}', - - /** - * Filter invert. if false, does nothing - * @param {Boolean} invert - * @default - */ - invert: true, - - mainParameter: 'invert', - - /** - * Apply the Invert operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function(options) { - var imageData = options.imageData, - data = imageData.data, i, - len = data.length; - for (i = 0; i < len; i += 4) { - data[i] = 255 - data[i]; - data[i + 1] = 255 - data[i + 1]; - data[i + 2] = 255 - data[i + 2]; - } - }, - - /** - * Invert filter isNeutralState implementation - * Used only in image applyFilters to discard filters that will not have an effect - * on the image - * @param {Object} options - **/ - isNeutralState: function() { - return !this.invert; - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uInvert: gl.getUniformLocation(program, 'uInvert'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform1i(uniformLocations.uInvert, this.invert); - }, - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Invert} Instance of fabric.Image.filters.Invert - */ - fabric.Image.filters.Invert.fromObject = fabric.Image.filters.BaseFilter.fromObject; - - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - extend = fabric.util.object.extend, - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Noise filter class - * @class fabric.Image.filters.Noise - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Noise#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Noise({ - * noise: 700 - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.Noise = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Noise.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Noise', - - /** - * Fragment source for the noise program - */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uStepH;\n' + - 'uniform float uNoise;\n' + - 'uniform float uSeed;\n' + - 'varying vec2 vTexCoord;\n' + - 'float rand(vec2 co, float seed, float vScale) {\n' + - 'return fract(sin(dot(co.xy * vScale ,vec2(12.9898 , 78.233))) * 43758.5453 * (seed + 0.01) / 2.0);\n' + - '}\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'color.rgb += (0.5 - rand(vTexCoord, uSeed, 0.1 / uStepH)) * uNoise;\n' + - 'gl_FragColor = color;\n' + - '}', - - /** - * Describe the property that is the filter parameter - * @param {String} m - * @default - */ - mainParameter: 'noise', - - /** - * Noise value, from - * @param {Number} noise - * @default - */ - noise: 0, - - /** - * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function(options) { - if (this.noise === 0) { - return; - } - var imageData = options.imageData, - data = imageData.data, i, len = data.length, - noise = this.noise, rand; - - for (i = 0, len = data.length; i < len; i += 4) { - - rand = (0.5 - Math.random()) * noise; - - data[i] += rand; - data[i + 1] += rand; - data[i + 2] += rand; - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uNoise: gl.getUniformLocation(program, 'uNoise'), - uSeed: gl.getUniformLocation(program, 'uSeed'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform1f(uniformLocations.uNoise, this.noise / 255); - gl.uniform1f(uniformLocations.uSeed, Math.random()); - }, - - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function() { - return extend(this.callSuper('toObject'), { - noise: this.noise - }); - } - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {Function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Noise} Instance of fabric.Image.filters.Noise - */ - fabric.Image.filters.Noise.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Pixelate filter class - * @class fabric.Image.filters.Pixelate - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Pixelate#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Pixelate({ - * blocksize: 8 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Pixelate = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Pixelate.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Pixelate', - - blocksize: 4, - - mainParameter: 'blocksize', - - /** - * Fragment source for the Pixelate program - */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uBlocksize;\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'float blockW = uBlocksize * uStepW;\n' + - 'float blockH = uBlocksize * uStepW;\n' + - 'int posX = int(vTexCoord.x / blockW);\n' + - 'int posY = int(vTexCoord.y / blockH);\n' + - 'float fposX = float(posX);\n' + - 'float fposY = float(posY);\n' + - 'vec2 squareCoords = vec2(fposX * blockW, fposY * blockH);\n' + - 'vec4 color = texture2D(uTexture, squareCoords);\n' + - 'gl_FragColor = color;\n' + - '}', - - /** - * Apply the Pixelate operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function(options) { - var imageData = options.imageData, - data = imageData.data, - iLen = imageData.height, - jLen = imageData.width, - index, i, j, r, g, b, a, - _i, _j, _iLen, _jLen; - - for (i = 0; i < iLen; i += this.blocksize) { - for (j = 0; j < jLen; j += this.blocksize) { - - index = (i * 4) * jLen + (j * 4); - - r = data[index]; - g = data[index + 1]; - b = data[index + 2]; - a = data[index + 3]; - - _iLen = Math.min(i + this.blocksize, iLen); - _jLen = Math.min(j + this.blocksize, jLen); - for (_i = i; _i < _iLen; _i++) { - for (_j = j; _j < _jLen; _j++) { - index = (_i * 4) * jLen + (_j * 4); - data[index] = r; - data[index + 1] = g; - data[index + 2] = b; - data[index + 3] = a; - } - } - } - } - }, - - /** - * Indicate when the filter is not gonna apply changes to the image - **/ - isNeutralState: function() { - return this.blocksize === 1; - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uBlocksize: gl.getUniformLocation(program, 'uBlocksize'), - uStepW: gl.getUniformLocation(program, 'uStepW'), - uStepH: gl.getUniformLocation(program, 'uStepH'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform1f(uniformLocations.uBlocksize, this.blocksize); - }, - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {Function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Pixelate} Instance of fabric.Image.filters.Pixelate - */ - fabric.Image.filters.Pixelate.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - extend = fabric.util.object.extend, - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Remove white filter class - * @class fabric.Image.filters.RemoveColor - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.RemoveColor#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.RemoveColor({ - * threshold: 0.2, - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.RemoveColor = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.RemoveColor.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'RemoveColor', - - /** - * Color to remove, in any format understood by fabric.Color. - * @param {String} type - * @default - */ - color: '#FFFFFF', - - /** - * Fragment source for the brightness program - */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec4 uLow;\n' + - 'uniform vec4 uHigh;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'gl_FragColor = texture2D(uTexture, vTexCoord);\n' + - 'if(all(greaterThan(gl_FragColor.rgb,uLow.rgb)) && all(greaterThan(uHigh.rgb,gl_FragColor.rgb))) {\n' + - 'gl_FragColor.a = 0.0;\n' + - '}\n' + - '}', - - /** - * distance to actual color, as value up or down from each r,g,b - * between 0 and 1 - **/ - distance: 0.02, - - /** - * For color to remove inside distance, use alpha channel for a smoother deletion - * NOT IMPLEMENTED YET - **/ - useAlpha: false, - - /** - * Constructor - * @memberOf fabric.Image.filters.RemoveWhite.prototype - * @param {Object} [options] Options object - * @param {Number} [options.color=#RRGGBB] Threshold value - * @param {Number} [options.distance=10] Distance value - */ - - /** - * Applies filter to canvas element - * @param {Object} canvasEl Canvas element to apply filter to - */ - applyTo2d: function(options) { - var imageData = options.imageData, - data = imageData.data, i, - distance = this.distance * 255, - r, g, b, - source = new fabric.Color(this.color).getSource(), - lowC = [ - source[0] - distance, - source[1] - distance, - source[2] - distance, - ], - highC = [ - source[0] + distance, - source[1] + distance, - source[2] + distance, - ]; - - - for (i = 0; i < data.length; i += 4) { - r = data[i]; - g = data[i + 1]; - b = data[i + 2]; - - if (r > lowC[0] && - g > lowC[1] && - b > lowC[2] && - r < highC[0] && - g < highC[1] && - b < highC[2]) { - data[i + 3] = 0; - } - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uLow: gl.getUniformLocation(program, 'uLow'), - uHigh: gl.getUniformLocation(program, 'uHigh'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - var source = new fabric.Color(this.color).getSource(), - distance = parseFloat(this.distance), - lowC = [ - 0 + source[0] / 255 - distance, - 0 + source[1] / 255 - distance, - 0 + source[2] / 255 - distance, - 1 - ], - highC = [ - source[0] / 255 + distance, - source[1] / 255 + distance, - source[2] / 255 + distance, - 1 - ]; - gl.uniform4fv(uniformLocations.uLow, lowC); - gl.uniform4fv(uniformLocations.uHigh, highC); - }, - - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function() { - return extend(this.callSuper('toObject'), { - color: this.color, - distance: this.distance - }); - } - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {Function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.RemoveColor} Instance of fabric.Image.filters.RemoveWhite - */ - fabric.Image.filters.RemoveColor.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - var matrices = { - Brownie: [ - 0.59970,0.34553,-0.27082,0,0.186, - -0.03770,0.86095,0.15059,0,-0.1449, - 0.24113,-0.07441,0.44972,0,-0.02965, - 0,0,0,1,0 - ], - Vintage: [ - 0.62793,0.32021,-0.03965,0,0.03784, - 0.02578,0.64411,0.03259,0,0.02926, - 0.04660,-0.08512,0.52416,0,0.02023, - 0,0,0,1,0 - ], - Kodachrome: [ - 1.12855,-0.39673,-0.03992,0,0.24991, - -0.16404,1.08352,-0.05498,0,0.09698, - -0.16786,-0.56034,1.60148,0,0.13972, - 0,0,0,1,0 - ], - Technicolor: [ - 1.91252,-0.85453,-0.09155,0,0.04624, - -0.30878,1.76589,-0.10601,0,-0.27589, - -0.23110,-0.75018,1.84759,0,0.12137, - 0,0,0,1,0 - ], - Polaroid: [ - 1.438,-0.062,-0.062,0,0, - -0.122,1.378,-0.122,0,0, - -0.016,-0.016,1.483,0,0, - 0,0,0,1,0 - ], - Sepia: [ - 0.393, 0.769, 0.189, 0, 0, - 0.349, 0.686, 0.168, 0, 0, - 0.272, 0.534, 0.131, 0, 0, - 0, 0, 0, 1, 0 - ], - BlackWhite: [ - 1.5, 1.5, 1.5, 0, -1, - 1.5, 1.5, 1.5, 0, -1, - 1.5, 1.5, 1.5, 0, -1, - 0, 0, 0, 1, 0, - ] - }; - - for (var key in matrices) { - filters[key] = createClass(filters.ColorMatrix, /** @lends fabric.Image.filters.Sepia.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: key, - - /** - * Colormatrix for the effect - * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning - * outside the -1, 1 range. - * @param {Array} matrix array of 20 numbers. - * @default - */ - matrix: matrices[key], - - /** - * Lock the matrix export for this kind of static, parameter less filters. - */ - mainParameter: false, - /** - * Lock the colormatrix on the color part, skipping alpha - */ - colorsOnly: true, - - }); - fabric.Image.filters[key].fromObject = fabric.Image.filters.BaseFilter.fromObject; - } -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - 'use strict'; - - var fabric = global.fabric, - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Color Blend filter class - * @class fabric.Image.filter.BlendColor - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @example - * var filter = new fabric.Image.filters.BlendColor({ - * color: '#000', - * mode: 'multiply' - * }); - * - * var filter = new fabric.Image.filters.BlendImage({ - * image: fabricImageObject, - * mode: 'multiply', - * alpha: 0.5 - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - - filters.BlendColor = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Blend.prototype */ { - type: 'BlendColor', - - /** - * Color to make the blend operation with. default to a reddish color since black or white - * gives always strong result. - * @type String - * @default - **/ - color: '#F95C63', - - /** - * Blend mode for the filter: one of multiply, add, diff, screen, subtract, - * darken, lighten, overlay, exclusion, tint. - * @type String - * @default - **/ - mode: 'multiply', - - /** - * alpha value. represent the strength of the blend color operation. - * @type Number - * @default - **/ - alpha: 1, - - /** - * Fragment source for the Multiply program - */ - fragmentSource: { - multiply: 'gl_FragColor.rgb *= uColor.rgb;\n', - screen: 'gl_FragColor.rgb = 1.0 - (1.0 - gl_FragColor.rgb) * (1.0 - uColor.rgb);\n', - add: 'gl_FragColor.rgb += uColor.rgb;\n', - diff: 'gl_FragColor.rgb = abs(gl_FragColor.rgb - uColor.rgb);\n', - subtract: 'gl_FragColor.rgb -= uColor.rgb;\n', - lighten: 'gl_FragColor.rgb = max(gl_FragColor.rgb, uColor.rgb);\n', - darken: 'gl_FragColor.rgb = min(gl_FragColor.rgb, uColor.rgb);\n', - exclusion: 'gl_FragColor.rgb += uColor.rgb - 2.0 * (uColor.rgb * gl_FragColor.rgb);\n', - overlay: 'if (uColor.r < 0.5) {\n' + - 'gl_FragColor.r *= 2.0 * uColor.r;\n' + - '} else {\n' + - 'gl_FragColor.r = 1.0 - 2.0 * (1.0 - gl_FragColor.r) * (1.0 - uColor.r);\n' + - '}\n' + - 'if (uColor.g < 0.5) {\n' + - 'gl_FragColor.g *= 2.0 * uColor.g;\n' + - '} else {\n' + - 'gl_FragColor.g = 1.0 - 2.0 * (1.0 - gl_FragColor.g) * (1.0 - uColor.g);\n' + - '}\n' + - 'if (uColor.b < 0.5) {\n' + - 'gl_FragColor.b *= 2.0 * uColor.b;\n' + - '} else {\n' + - 'gl_FragColor.b = 1.0 - 2.0 * (1.0 - gl_FragColor.b) * (1.0 - uColor.b);\n' + - '}\n', - tint: 'gl_FragColor.rgb *= (1.0 - uColor.a);\n' + - 'gl_FragColor.rgb += uColor.rgb;\n', - }, - - /** - * build the fragment source for the filters, joining the common part with - * the specific one. - * @param {String} mode the mode of the filter, a key of this.fragmentSource - * @return {String} the source to be compiled - * @private - */ - buildSource: function(mode) { - return 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec4 uColor;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'gl_FragColor = color;\n' + - 'if (color.a > 0.0) {\n' + - this.fragmentSource[mode] + - '}\n' + - '}'; - }, - - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function(options) { - var cacheKey = this.type + '_' + this.mode, shaderSource; - if (!options.programCache.hasOwnProperty(cacheKey)) { - shaderSource = this.buildSource(this.mode); - options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); - } - return options.programCache[cacheKey]; - }, - - /** - * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function(options) { - var imageData = options.imageData, - data = imageData.data, iLen = data.length, - tr, tg, tb, - r, g, b, - source, alpha1 = 1 - this.alpha; - - source = new fabric.Color(this.color).getSource(); - tr = source[0] * this.alpha; - tg = source[1] * this.alpha; - tb = source[2] * this.alpha; - - for (var i = 0; i < iLen; i += 4) { - - r = data[i]; - g = data[i + 1]; - b = data[i + 2]; - - switch (this.mode) { - case 'multiply': - data[i] = r * tr / 255; - data[i + 1] = g * tg / 255; - data[i + 2] = b * tb / 255; - break; - case 'screen': - data[i] = 255 - (255 - r) * (255 - tr) / 255; - data[i + 1] = 255 - (255 - g) * (255 - tg) / 255; - data[i + 2] = 255 - (255 - b) * (255 - tb) / 255; - break; - case 'add': - data[i] = r + tr; - data[i + 1] = g + tg; - data[i + 2] = b + tb; - break; - case 'diff': - case 'difference': - data[i] = Math.abs(r - tr); - data[i + 1] = Math.abs(g - tg); - data[i + 2] = Math.abs(b - tb); - break; - case 'subtract': - data[i] = r - tr; - data[i + 1] = g - tg; - data[i + 2] = b - tb; - break; - case 'darken': - data[i] = Math.min(r, tr); - data[i + 1] = Math.min(g, tg); - data[i + 2] = Math.min(b, tb); - break; - case 'lighten': - data[i] = Math.max(r, tr); - data[i + 1] = Math.max(g, tg); - data[i + 2] = Math.max(b, tb); - break; - case 'overlay': - data[i] = tr < 128 ? (2 * r * tr / 255) : (255 - 2 * (255 - r) * (255 - tr) / 255); - data[i + 1] = tg < 128 ? (2 * g * tg / 255) : (255 - 2 * (255 - g) * (255 - tg) / 255); - data[i + 2] = tb < 128 ? (2 * b * tb / 255) : (255 - 2 * (255 - b) * (255 - tb) / 255); - break; - case 'exclusion': - data[i] = tr + r - ((2 * tr * r) / 255); - data[i + 1] = tg + g - ((2 * tg * g) / 255); - data[i + 2] = tb + b - ((2 * tb * b) / 255); - break; - case 'tint': - data[i] = tr + r * alpha1; - data[i + 1] = tg + g * alpha1; - data[i + 2] = tb + b * alpha1; - } - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uColor: gl.getUniformLocation(program, 'uColor'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - var source = new fabric.Color(this.color).getSource(); - source[0] = this.alpha * source[0] / 255; - source[1] = this.alpha * source[1] / 255; - source[2] = this.alpha * source[2] / 255; - source[3] = this.alpha; - gl.uniform4fv(uniformLocations.uColor, source); - }, - - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function() { - return { - type: this.type, - color: this.color, - mode: this.mode, - alpha: this.alpha - }; - } - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.BlendColor} Instance of fabric.Image.filters.BlendColor - */ - fabric.Image.filters.BlendColor.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - 'use strict'; - - var fabric = global.fabric, - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Image Blend filter class - * @class fabric.Image.filter.BlendImage - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @example - * var filter = new fabric.Image.filters.BlendColor({ - * color: '#000', - * mode: 'multiply' - * }); - * - * var filter = new fabric.Image.filters.BlendImage({ - * image: fabricImageObject, - * mode: 'multiply', - * alpha: 0.5 - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - - filters.BlendImage = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.BlendImage.prototype */ { - type: 'BlendImage', - - /** - * Color to make the blend operation with. default to a reddish color since black or white - * gives always strong result. - **/ - image: null, - - /** - * Blend mode for the filter (one of "multiply", "mask") - * @type String - * @default - **/ - mode: 'multiply', - - /** - * alpha value. represent the strength of the blend image operation. - * not implemented. - **/ - alpha: 1, - - vertexSource: 'attribute vec2 aPosition;\n' + - 'varying vec2 vTexCoord;\n' + - 'varying vec2 vTexCoord2;\n' + - 'uniform mat3 uTransformMatrix;\n' + - 'void main() {\n' + - 'vTexCoord = aPosition;\n' + - 'vTexCoord2 = (uTransformMatrix * vec3(aPosition, 1.0)).xy;\n' + - 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\n' + - '}', - - /** - * Fragment source for the Multiply program - */ - fragmentSource: { - multiply: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform sampler2D uImage;\n' + - 'uniform vec4 uColor;\n' + - 'varying vec2 vTexCoord;\n' + - 'varying vec2 vTexCoord2;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'vec4 color2 = texture2D(uImage, vTexCoord2);\n' + - 'color.rgba *= color2.rgba;\n' + - 'gl_FragColor = color;\n' + - '}', - mask: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform sampler2D uImage;\n' + - 'uniform vec4 uColor;\n' + - 'varying vec2 vTexCoord;\n' + - 'varying vec2 vTexCoord2;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'vec4 color2 = texture2D(uImage, vTexCoord2);\n' + - 'color.a = color2.a;\n' + - 'gl_FragColor = color;\n' + - '}', - }, - - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function(options) { - var cacheKey = this.type + '_' + this.mode; - var shaderSource = this.fragmentSource[this.mode]; - if (!options.programCache.hasOwnProperty(cacheKey)) { - options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); - } - return options.programCache[cacheKey]; - }, - - applyToWebGL: function(options) { - // load texture to blend. - var gl = options.context, - texture = this.createTexture(options.filterBackend, this.image); - this.bindAdditionalTexture(gl, texture, gl.TEXTURE1); - this.callSuper('applyToWebGL', options); - this.unbindAdditionalTexture(gl, gl.TEXTURE1); - }, - - createTexture: function(backend, image) { - return backend.getCachedTexture(image.cacheKey, image._element); - }, - - /** - * Calculate a transformMatrix to adapt the image to blend over - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - calculateMatrix: function() { - var image = this.image, - width = image._element.width, - height = image._element.height; - return [ - 1 / image.scaleX, 0, 0, - 0, 1 / image.scaleY, 0, - -image.left / width, -image.top / height, 1 - ]; - }, - - /** - * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function(options) { - var imageData = options.imageData, - resources = options.filterBackend.resources, - data = imageData.data, iLen = data.length, - width = imageData.width, - height = imageData.height, - tr, tg, tb, ta, - r, g, b, a, - canvas1, context, image = this.image, blendData; - - if (!resources.blendImage) { - resources.blendImage = fabric.util.createCanvasElement(); - } - canvas1 = resources.blendImage; - context = canvas1.getContext('2d'); - if (canvas1.width !== width || canvas1.height !== height) { - canvas1.width = width; - canvas1.height = height; - } - else { - context.clearRect(0, 0, width, height); - } - context.setTransform(image.scaleX, 0, 0, image.scaleY, image.left, image.top); - context.drawImage(image._element, 0, 0, width, height); - blendData = context.getImageData(0, 0, width, height).data; - for (var i = 0; i < iLen; i += 4) { - - r = data[i]; - g = data[i + 1]; - b = data[i + 2]; - a = data[i + 3]; - - tr = blendData[i]; - tg = blendData[i + 1]; - tb = blendData[i + 2]; - ta = blendData[i + 3]; - - switch (this.mode) { - case 'multiply': - data[i] = r * tr / 255; - data[i + 1] = g * tg / 255; - data[i + 2] = b * tb / 255; - data[i + 3] = a * ta / 255; - break; - case 'mask': - data[i + 3] = ta; - break; - } - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uTransformMatrix: gl.getUniformLocation(program, 'uTransformMatrix'), - uImage: gl.getUniformLocation(program, 'uImage'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - var matrix = this.calculateMatrix(); - gl.uniform1i(uniformLocations.uImage, 1); // texture unit 1. - gl.uniformMatrix3fv(uniformLocations.uTransformMatrix, false, matrix); - }, - - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function() { - return { - type: this.type, - image: this.image && this.image.toObject(), - mode: this.mode, - alpha: this.alpha - }; - } - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} callback to be invoked after filter creation - * @return {fabric.Image.filters.BlendImage} Instance of fabric.Image.filters.BlendImage - */ - fabric.Image.filters.BlendImage.fromObject = function(object, callback) { - fabric.Image.fromObject(object.image, function(image) { - var options = fabric.util.object.clone(object); - options.image = image; - callback(new fabric.Image.filters.BlendImage(options)); - }); - }; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), pow = Math.pow, floor = Math.floor, - sqrt = Math.sqrt, abs = Math.abs, round = Math.round, sin = Math.sin, - ceil = Math.ceil, - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Resize image filter class - * @class fabric.Image.filters.Resize - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Resize(); - * object.filters.push(filter); - * object.applyFilters(canvas.renderAll.bind(canvas)); - */ - filters.Resize = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Resize.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Resize', - - /** - * Resize type - * for webgl resizeType is just lanczos, for canvas2d can be: - * bilinear, hermite, sliceHack, lanczos. - * @param {String} resizeType - * @default - */ - resizeType: 'hermite', - - /** - * Scale factor for resizing, x axis - * @param {Number} scaleX - * @default - */ - scaleX: 1, - - /** - * Scale factor for resizing, y axis - * @param {Number} scaleY - * @default - */ - scaleY: 1, - - /** - * LanczosLobes parameter for lanczos filter, valid for resizeType lanczos - * @param {Number} lanczosLobes - * @default - */ - lanczosLobes: 3, - - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uDelta: gl.getUniformLocation(program, 'uDelta'), - uTaps: gl.getUniformLocation(program, 'uTaps'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform2fv(uniformLocations.uDelta, this.horizontal ? [1 / this.width, 0] : [0, 1 / this.height]); - gl.uniform1fv(uniformLocations.uTaps, this.taps); - }, - - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function(options) { - var filterWindow = this.getFilterWindow(), cacheKey = this.type + '_' + filterWindow; - if (!options.programCache.hasOwnProperty(cacheKey)) { - var fragmentShader = this.generateShader(filterWindow); - options.programCache[cacheKey] = this.createProgram(options.context, fragmentShader); - } - return options.programCache[cacheKey]; - }, - - getFilterWindow: function() { - var scale = this.tempScale; - return Math.ceil(this.lanczosLobes / scale); - }, - - getTaps: function() { - var lobeFunction = this.lanczosCreate(this.lanczosLobes), scale = this.tempScale, - filterWindow = this.getFilterWindow(), taps = new Array(filterWindow); - for (var i = 1; i <= filterWindow; i++) { - taps[i - 1] = lobeFunction(i * scale); - } - return taps; - }, - - /** - * Generate vertex and shader sources from the necessary steps numbers - * @param {Number} filterWindow - */ - generateShader: function(filterWindow) { - var offsets = new Array(filterWindow), - fragmentShader = this.fragmentSourceTOP, filterWindow; - - for (var i = 1; i <= filterWindow; i++) { - offsets[i - 1] = i + '.0 * uDelta'; - } - - fragmentShader += 'uniform float uTaps[' + filterWindow + '];\n'; - fragmentShader += 'void main() {\n'; - fragmentShader += ' vec4 color = texture2D(uTexture, vTexCoord);\n'; - fragmentShader += ' float sum = 1.0;\n'; - - offsets.forEach(function(offset, i) { - fragmentShader += ' color += texture2D(uTexture, vTexCoord + ' + offset + ') * uTaps[' + i + '];\n'; - fragmentShader += ' color += texture2D(uTexture, vTexCoord - ' + offset + ') * uTaps[' + i + '];\n'; - fragmentShader += ' sum += 2.0 * uTaps[' + i + '];\n'; - }); - fragmentShader += ' gl_FragColor = color / sum;\n'; - fragmentShader += '}'; - return fragmentShader; - }, - - fragmentSourceTOP: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec2 uDelta;\n' + - 'varying vec2 vTexCoord;\n', - - /** - * Apply the resize filter to the image - * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be executed - * @param {Boolean} options.webgl Whether to use webgl to render the filter. - * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. - * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - applyTo: function(options) { - if (options.webgl) { - options.passes++; - this.width = options.sourceWidth; - this.horizontal = true; - this.dW = Math.round(this.width * this.scaleX); - this.dH = options.sourceHeight; - this.tempScale = this.dW / this.width; - this.taps = this.getTaps(); - options.destinationWidth = this.dW; - this._setupFrameBuffer(options); - this.applyToWebGL(options); - this._swapTextures(options); - options.sourceWidth = options.destinationWidth; - - this.height = options.sourceHeight; - this.horizontal = false; - this.dH = Math.round(this.height * this.scaleY); - this.tempScale = this.dH / this.height; - this.taps = this.getTaps(); - options.destinationHeight = this.dH; - this._setupFrameBuffer(options); - this.applyToWebGL(options); - this._swapTextures(options); - options.sourceHeight = options.destinationHeight; - } - else { - this.applyTo2d(options); - } - }, - - isNeutralState: function() { - return this.scaleX === 1 && this.scaleY === 1; - }, - - lanczosCreate: function(lobes) { - return function(x) { - if (x >= lobes || x <= -lobes) { - return 0.0; - } - if (x < 1.19209290E-07 && x > -1.19209290E-07) { - return 1.0; - } - x *= Math.PI; - var xx = x / lobes; - return (sin(x) / x) * sin(xx) / xx; - }; - }, - - /** - * Applies filter to canvas element - * @memberOf fabric.Image.filters.Resize.prototype - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} scaleX - * @param {Number} scaleY - */ - applyTo2d: function(options) { - var imageData = options.imageData, - scaleX = this.scaleX, - scaleY = this.scaleY; - - this.rcpScaleX = 1 / scaleX; - this.rcpScaleY = 1 / scaleY; - - var oW = imageData.width, oH = imageData.height, - dW = round(oW * scaleX), dH = round(oH * scaleY), - newData; - - if (this.resizeType === 'sliceHack') { - newData = this.sliceByTwo(options, oW, oH, dW, dH); - } - else if (this.resizeType === 'hermite') { - newData = this.hermiteFastResize(options, oW, oH, dW, dH); - } - else if (this.resizeType === 'bilinear') { - newData = this.bilinearFiltering(options, oW, oH, dW, dH); - } - else if (this.resizeType === 'lanczos') { - newData = this.lanczosResize(options, oW, oH, dW, dH); - } - options.imageData = newData; - }, - - /** - * Filter sliceByTwo - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} oW Original Width - * @param {Number} oH Original Height - * @param {Number} dW Destination Width - * @param {Number} dH Destination Height - * @returns {ImageData} - */ - sliceByTwo: function(options, oW, oH, dW, dH) { - var imageData = options.imageData, - mult = 0.5, doneW = false, doneH = false, stepW = oW * mult, - stepH = oH * mult, resources = fabric.filterBackend.resources, - tmpCanvas, ctx, sX = 0, sY = 0, dX = oW, dY = 0; - if (!resources.sliceByTwo) { - resources.sliceByTwo = document.createElement('canvas'); - } - tmpCanvas = resources.sliceByTwo; - if (tmpCanvas.width < oW * 1.5 || tmpCanvas.height < oH) { - tmpCanvas.width = oW * 1.5; - tmpCanvas.height = oH; - } - ctx = tmpCanvas.getContext('2d'); - ctx.clearRect(0, 0, oW * 1.5, oH); - ctx.putImageData(imageData, 0, 0); - - dW = floor(dW); - dH = floor(dH); - - while (!doneW || !doneH) { - oW = stepW; - oH = stepH; - if (dW < floor(stepW * mult)) { - stepW = floor(stepW * mult); - } - else { - stepW = dW; - doneW = true; - } - if (dH < floor(stepH * mult)) { - stepH = floor(stepH * mult); - } - else { - stepH = dH; - doneH = true; - } - ctx.drawImage(tmpCanvas, sX, sY, oW, oH, dX, dY, stepW, stepH); - sX = dX; - sY = dY; - dY += stepH; - } - return ctx.getImageData(sX, sY, dW, dH); - }, - - /** - * Filter lanczosResize - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} oW Original Width - * @param {Number} oH Original Height - * @param {Number} dW Destination Width - * @param {Number} dH Destination Height - * @returns {ImageData} - */ - lanczosResize: function(options, oW, oH, dW, dH) { - - function process(u) { - var v, i, weight, idx, a, red, green, - blue, alpha, fX, fY; - center.x = (u + 0.5) * ratioX; - icenter.x = floor(center.x); - for (v = 0; v < dH; v++) { - center.y = (v + 0.5) * ratioY; - icenter.y = floor(center.y); - a = 0; red = 0; green = 0; blue = 0; alpha = 0; - for (i = icenter.x - range2X; i <= icenter.x + range2X; i++) { - if (i < 0 || i >= oW) { - continue; - } - fX = floor(1000 * abs(i - center.x)); - if (!cacheLanc[fX]) { - cacheLanc[fX] = { }; - } - for (var j = icenter.y - range2Y; j <= icenter.y + range2Y; j++) { - if (j < 0 || j >= oH) { - continue; - } - fY = floor(1000 * abs(j - center.y)); - if (!cacheLanc[fX][fY]) { - cacheLanc[fX][fY] = lanczos(sqrt(pow(fX * rcpRatioX, 2) + pow(fY * rcpRatioY, 2)) / 1000); - } - weight = cacheLanc[fX][fY]; - if (weight > 0) { - idx = (j * oW + i) * 4; - a += weight; - red += weight * srcData[idx]; - green += weight * srcData[idx + 1]; - blue += weight * srcData[idx + 2]; - alpha += weight * srcData[idx + 3]; - } - } - } - idx = (v * dW + u) * 4; - destData[idx] = red / a; - destData[idx + 1] = green / a; - destData[idx + 2] = blue / a; - destData[idx + 3] = alpha / a; - } - - if (++u < dW) { - return process(u); - } - else { - return destImg; - } - } - - var srcData = options.imageData.data, - destImg = options.ctx.createImageData(dW, dH), - destData = destImg.data, - lanczos = this.lanczosCreate(this.lanczosLobes), - ratioX = this.rcpScaleX, ratioY = this.rcpScaleY, - rcpRatioX = 2 / this.rcpScaleX, rcpRatioY = 2 / this.rcpScaleY, - range2X = ceil(ratioX * this.lanczosLobes / 2), - range2Y = ceil(ratioY * this.lanczosLobes / 2), - cacheLanc = { }, center = { }, icenter = { }; - - return process(0); - }, - - /** - * bilinearFiltering - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} oW Original Width - * @param {Number} oH Original Height - * @param {Number} dW Destination Width - * @param {Number} dH Destination Height - * @returns {ImageData} - */ - bilinearFiltering: function(options, oW, oH, dW, dH) { - var a, b, c, d, x, y, i, j, xDiff, yDiff, chnl, - color, offset = 0, origPix, ratioX = this.rcpScaleX, - ratioY = this.rcpScaleY, - w4 = 4 * (oW - 1), img = options.imageData, - pixels = img.data, destImage = options.ctx.createImageData(dW, dH), - destPixels = destImage.data; - for (i = 0; i < dH; i++) { - for (j = 0; j < dW; j++) { - x = floor(ratioX * j); - y = floor(ratioY * i); - xDiff = ratioX * j - x; - yDiff = ratioY * i - y; - origPix = 4 * (y * oW + x); - - for (chnl = 0; chnl < 4; chnl++) { - a = pixels[origPix + chnl]; - b = pixels[origPix + 4 + chnl]; - c = pixels[origPix + w4 + chnl]; - d = pixels[origPix + w4 + 4 + chnl]; - color = a * (1 - xDiff) * (1 - yDiff) + b * xDiff * (1 - yDiff) + - c * yDiff * (1 - xDiff) + d * xDiff * yDiff; - destPixels[offset++] = color; - } - } - } - return destImage; - }, - - /** - * hermiteFastResize - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} oW Original Width - * @param {Number} oH Original Height - * @param {Number} dW Destination Width - * @param {Number} dH Destination Height - * @returns {ImageData} - */ - hermiteFastResize: function(options, oW, oH, dW, dH) { - var ratioW = this.rcpScaleX, ratioH = this.rcpScaleY, - ratioWHalf = ceil(ratioW / 2), - ratioHHalf = ceil(ratioH / 2), - img = options.imageData, data = img.data, - img2 = options.ctx.createImageData(dW, dH), data2 = img2.data; - for (var j = 0; j < dH; j++) { - for (var i = 0; i < dW; i++) { - var x2 = (i + j * dW) * 4, weight = 0, weights = 0, weightsAlpha = 0, - gxR = 0, gxG = 0, gxB = 0, gxA = 0, centerY = (j + 0.5) * ratioH; - for (var yy = floor(j * ratioH); yy < (j + 1) * ratioH; yy++) { - var dy = abs(centerY - (yy + 0.5)) / ratioHHalf, - centerX = (i + 0.5) * ratioW, w0 = dy * dy; - for (var xx = floor(i * ratioW); xx < (i + 1) * ratioW; xx++) { - var dx = abs(centerX - (xx + 0.5)) / ratioWHalf, - w = sqrt(w0 + dx * dx); - /* eslint-disable max-depth */ - if (w > 1 && w < -1) { - continue; - } - //hermite filter - weight = 2 * w * w * w - 3 * w * w + 1; - if (weight > 0) { - dx = 4 * (xx + yy * oW); - //alpha - gxA += weight * data[dx + 3]; - weightsAlpha += weight; - //colors - if (data[dx + 3] < 255) { - weight = weight * data[dx + 3] / 250; - } - gxR += weight * data[dx]; - gxG += weight * data[dx + 1]; - gxB += weight * data[dx + 2]; - weights += weight; - } - /* eslint-enable max-depth */ - } - } - data2[x2] = gxR / weights; - data2[x2 + 1] = gxG / weights; - data2[x2 + 2] = gxB / weights; - data2[x2 + 3] = gxA / weightsAlpha; - } - } - return img2; - }, - - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function() { - return { - type: this.type, - scaleX: this.scaleX, - scaleY: this.scaleY, - resizeType: this.resizeType, - lanczosLobes: this.lanczosLobes - }; - } - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {Function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Resize} Instance of fabric.Image.filters.Resize - */ - fabric.Image.filters.Resize.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Contrast filter class - * @class fabric.Image.filters.Contrast - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Contrast#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Contrast({ - * contrast: 0.25 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Contrast = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Contrast.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Contrast', - - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uContrast;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'float contrastF = 1.015 * (uContrast + 1.0) / (1.0 * (1.015 - uContrast));\n' + - 'color.rgb = contrastF * (color.rgb - 0.5) + 0.5;\n' + - 'gl_FragColor = color;\n' + - '}', - - /** - * contrast value, range from -1 to 1. - * @param {Number} contrast - * @default 0 - */ - contrast: 0, - - mainParameter: 'contrast', - - /** - * Constructor - * @memberOf fabric.Image.filters.Contrast.prototype - * @param {Object} [options] Options object - * @param {Number} [options.contrast=0] Value to contrast the image up (-1...1) - */ - - /** - * Apply the Contrast operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function(options) { - if (this.contrast === 0) { - return; - } - var imageData = options.imageData, i, len, - data = imageData.data, len = data.length, - contrast = Math.floor(this.contrast * 255), - contrastF = 259 * (contrast + 255) / (255 * (259 - contrast)); - - for (i = 0; i < len; i += 4) { - data[i] = contrastF * (data[i] - 128) + 128; - data[i + 1] = contrastF * (data[i + 1] - 128) + 128; - data[i + 2] = contrastF * (data[i + 2] - 128) + 128; - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uContrast: gl.getUniformLocation(program, 'uContrast'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform1f(uniformLocations.uContrast, this.contrast); - }, - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Contrast} Instance of fabric.Image.filters.Contrast - */ - fabric.Image.filters.Contrast.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Saturate filter class - * @class fabric.Image.filters.Saturation - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Saturation#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Saturation({ - * saturation: 1 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Saturation = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Saturation.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Saturation', - - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uSaturation;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'float rgMax = max(color.r, color.g);\n' + - 'float rgbMax = max(rgMax, color.b);\n' + - 'color.r += rgbMax != color.r ? (rgbMax - color.r) * uSaturation : 0.00;\n' + - 'color.g += rgbMax != color.g ? (rgbMax - color.g) * uSaturation : 0.00;\n' + - 'color.b += rgbMax != color.b ? (rgbMax - color.b) * uSaturation : 0.00;\n' + - 'gl_FragColor = color;\n' + - '}', - - /** - * Saturation value, from -1 to 1. - * Increases/decreases the color saturation. - * A value of 0 has no effect. - * - * @param {Number} saturation - * @default - */ - saturation: 0, - - mainParameter: 'saturation', - - /** - * Constructor - * @memberOf fabric.Image.filters.Saturate.prototype - * @param {Object} [options] Options object - * @param {Number} [options.saturate=0] Value to saturate the image (-1...1) - */ - - /** - * Apply the Saturation operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function(options) { - if (this.saturation === 0) { - return; - } - var imageData = options.imageData, - data = imageData.data, len = data.length, - adjust = -this.saturation, i, max; - - for (i = 0; i < len; i += 4) { - max = Math.max(data[i], data[i + 1], data[i + 2]); - data[i] += max !== data[i] ? (max - data[i]) * adjust : 0; - data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * adjust : 0; - data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * adjust : 0; - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uSaturation: gl.getUniformLocation(program, 'uSaturation'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform1f(uniformLocations.uSaturation, -this.saturation); - }, - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {Function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Saturation} Instance of fabric.Image.filters.Saturate - */ - fabric.Image.filters.Saturation.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Vibrance filter class - * @class fabric.Image.filters.Vibrance - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Vibrance#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Vibrance({ - * vibrance: 1 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Vibrance = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Vibrance.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Vibrance', - - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uVibrance;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'float max = max(color.r, max(color.g, color.b));\n' + - 'float avg = (color.r + color.g + color.b) / 3.0;\n' + - 'float amt = (abs(max - avg) * 2.0) * uVibrance;\n' + - 'color.r += max != color.r ? (max - color.r) * amt : 0.00;\n' + - 'color.g += max != color.g ? (max - color.g) * amt : 0.00;\n' + - 'color.b += max != color.b ? (max - color.b) * amt : 0.00;\n' + - 'gl_FragColor = color;\n' + - '}', - - /** - * Vibrance value, from -1 to 1. - * Increases/decreases the saturation of more muted colors with less effect on saturated colors. - * A value of 0 has no effect. - * - * @param {Number} vibrance - * @default - */ - vibrance: 0, - - mainParameter: 'vibrance', - - /** - * Constructor - * @memberOf fabric.Image.filters.Vibrance.prototype - * @param {Object} [options] Options object - * @param {Number} [options.vibrance=0] Vibrance value for the image (between -1 and 1) - */ - - /** - * Apply the Vibrance operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function(options) { - if (this.vibrance === 0) { - return; - } - var imageData = options.imageData, - data = imageData.data, len = data.length, - adjust = -this.vibrance, i, max, avg, amt; - - for (i = 0; i < len; i += 4) { - max = Math.max(data[i], data[i + 1], data[i + 2]); - avg = (data[i] + data[i + 1] + data[i + 2]) / 3; - amt = ((Math.abs(max - avg) * 2 / 255) * adjust); - data[i] += max !== data[i] ? (max - data[i]) * amt : 0; - data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * amt : 0; - data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * amt : 0; - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uVibrance: gl.getUniformLocation(program, 'uVibrance'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform1f(uniformLocations.uVibrance, -this.vibrance); - }, - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {Function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Vibrance} Instance of fabric.Image.filters.Vibrance - */ - fabric.Image.filters.Vibrance.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Blur filter class - * @class fabric.Image.filters.Blur - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Blur#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Blur({ - * blur: 0.5 - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.Blur = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Blur.prototype */ { - - type: 'Blur', - - /* -'gl_FragColor = vec4(0.0);', -'gl_FragColor += texture2D(texture, vTexCoord + -7 * uDelta)*0.0044299121055113265;', -'gl_FragColor += texture2D(texture, vTexCoord + -6 * uDelta)*0.00895781211794;', -'gl_FragColor += texture2D(texture, vTexCoord + -5 * uDelta)*0.0215963866053;', -'gl_FragColor += texture2D(texture, vTexCoord + -4 * uDelta)*0.0443683338718;', -'gl_FragColor += texture2D(texture, vTexCoord + -3 * uDelta)*0.0776744219933;', -'gl_FragColor += texture2D(texture, vTexCoord + -2 * uDelta)*0.115876621105;', -'gl_FragColor += texture2D(texture, vTexCoord + -1 * uDelta)*0.147308056121;', -'gl_FragColor += texture2D(texture, vTexCoord )*0.159576912161;', -'gl_FragColor += texture2D(texture, vTexCoord + 1 * uDelta)*0.147308056121;', -'gl_FragColor += texture2D(texture, vTexCoord + 2 * uDelta)*0.115876621105;', -'gl_FragColor += texture2D(texture, vTexCoord + 3 * uDelta)*0.0776744219933;', -'gl_FragColor += texture2D(texture, vTexCoord + 4 * uDelta)*0.0443683338718;', -'gl_FragColor += texture2D(texture, vTexCoord + 5 * uDelta)*0.0215963866053;', -'gl_FragColor += texture2D(texture, vTexCoord + 6 * uDelta)*0.00895781211794;', -'gl_FragColor += texture2D(texture, vTexCoord + 7 * uDelta)*0.0044299121055113265;', -*/ - - /* eslint-disable max-len */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec2 uDelta;\n' + - 'varying vec2 vTexCoord;\n' + - 'const float nSamples = 15.0;\n' + - 'vec3 v3offset = vec3(12.9898, 78.233, 151.7182);\n' + - 'float random(vec3 scale) {\n' + - /* use the fragment position for a different seed per-pixel */ - 'return fract(sin(dot(gl_FragCoord.xyz, scale)) * 43758.5453);\n' + - '}\n' + - 'void main() {\n' + - 'vec4 color = vec4(0.0);\n' + - 'float total = 0.0;\n' + - 'float offset = random(v3offset);\n' + - 'for (float t = -nSamples; t <= nSamples; t++) {\n' + - 'float percent = (t + offset - 0.5) / nSamples;\n' + - 'float weight = 1.0 - abs(percent);\n' + - 'color += texture2D(uTexture, vTexCoord + uDelta * percent) * weight;\n' + - 'total += weight;\n' + - '}\n' + - 'gl_FragColor = color / total;\n' + - '}', - /* eslint-enable max-len */ - - /** - * blur value, in percentage of image dimensions. - * specific to keep the image blur constant at different resolutions - * range between 0 and 1. - * @type Number - * @default - */ - blur: 0, - - mainParameter: 'blur', - - applyTo: function(options) { - if (options.webgl) { - // this aspectRatio is used to give the same blur to vertical and horizontal - this.aspectRatio = options.sourceWidth / options.sourceHeight; - options.passes++; - this._setupFrameBuffer(options); - this.horizontal = true; - this.applyToWebGL(options); - this._swapTextures(options); - this._setupFrameBuffer(options); - this.horizontal = false; - this.applyToWebGL(options); - this._swapTextures(options); - } - else { - this.applyTo2d(options); - } - }, - - applyTo2d: function(options) { - // paint canvasEl with current image data. - //options.ctx.putImageData(options.imageData, 0, 0); - options.imageData = this.simpleBlur(options); - }, - - simpleBlur: function(options) { - var resources = options.filterBackend.resources, canvas1, canvas2, - width = options.imageData.width, - height = options.imageData.height; - - if (!resources.blurLayer1) { - resources.blurLayer1 = fabric.util.createCanvasElement(); - resources.blurLayer2 = fabric.util.createCanvasElement(); - } - canvas1 = resources.blurLayer1; - canvas2 = resources.blurLayer2; - if (canvas1.width !== width || canvas1.height !== height) { - canvas2.width = canvas1.width = width; - canvas2.height = canvas1.height = height; - } - var ctx1 = canvas1.getContext('2d'), - ctx2 = canvas2.getContext('2d'), - nSamples = 15, - random, percent, j, i, - blur = this.blur * 0.06 * 0.5; - - // load first canvas - ctx1.putImageData(options.imageData, 0, 0); - ctx2.clearRect(0, 0, width, height); - - for (i = -nSamples; i <= nSamples; i++) { - random = (Math.random() - 0.5) / 4; - percent = i / nSamples; - j = blur * percent * width + random; - ctx2.globalAlpha = 1 - Math.abs(percent); - ctx2.drawImage(canvas1, j, random); - ctx1.drawImage(canvas2, 0, 0); - ctx2.globalAlpha = 1; - ctx2.clearRect(0, 0, canvas2.width, canvas2.height); - } - for (i = -nSamples; i <= nSamples; i++) { - random = (Math.random() - 0.5) / 4; - percent = i / nSamples; - j = blur * percent * height + random; - ctx2.globalAlpha = 1 - Math.abs(percent); - ctx2.drawImage(canvas1, random, j); - ctx1.drawImage(canvas2, 0, 0); - ctx2.globalAlpha = 1; - ctx2.clearRect(0, 0, canvas2.width, canvas2.height); - } - options.ctx.drawImage(canvas1, 0, 0); - var newImageData = options.ctx.getImageData(0, 0, canvas1.width, canvas1.height); - ctx1.globalAlpha = 1; - ctx1.clearRect(0, 0, canvas1.width, canvas1.height); - return newImageData; - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - delta: gl.getUniformLocation(program, 'uDelta'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - var delta = this.chooseRightDelta(); - gl.uniform2fv(uniformLocations.delta, delta); - }, - - /** - * choose right value of image percentage to blur with - * @returns {Array} a numeric array with delta values - */ - chooseRightDelta: function() { - var blurScale = 1, delta = [0, 0], blur; - if (this.horizontal) { - if (this.aspectRatio > 1) { - // image is wide, i want to shrink radius horizontal - blurScale = 1 / this.aspectRatio; - } - } - else { - if (this.aspectRatio < 1) { - // image is tall, i want to shrink radius vertical - blurScale = this.aspectRatio; - } - } - blur = blurScale * this.blur * 0.12; - if (this.horizontal) { - delta[0] = blur; - } - else { - delta[1] = blur; - } - return delta; - }, - }); - - /** - * Deserialize a JSON definition of a BlurFilter into a concrete instance. - */ - filters.Blur.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * Gamma filter class - * @class fabric.Image.filters.Gamma - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Gamma#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Gamma({ - * gamma: [1, 0.5, 2.1] - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Gamma = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Gamma.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Gamma', - - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec3 uGamma;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'vec3 correction = (1.0 / uGamma);\n' + - 'color.r = pow(color.r, correction.r);\n' + - 'color.g = pow(color.g, correction.g);\n' + - 'color.b = pow(color.b, correction.b);\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.rgb *= color.a;\n' + - '}', - - /** - * Gamma array value, from 0.01 to 2.2. - * @param {Array} gamma - * @default - */ - gamma: [1, 1, 1], - - /** - * Describe the property that is the filter parameter - * @param {String} m - * @default - */ - mainParameter: 'gamma', - - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function(options) { - this.gamma = [1, 1, 1]; - filters.BaseFilter.prototype.initialize.call(this, options); - }, - - /** - * Apply the Gamma operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function(options) { - var imageData = options.imageData, data = imageData.data, - gamma = this.gamma, len = data.length, - rInv = 1 / gamma[0], gInv = 1 / gamma[1], - bInv = 1 / gamma[2], i; - - if (!this.rVals) { - // eslint-disable-next-line - this.rVals = new Uint8Array(256); - // eslint-disable-next-line - this.gVals = new Uint8Array(256); - // eslint-disable-next-line - this.bVals = new Uint8Array(256); - } - - // This is an optimization - pre-compute a look-up table for each color channel - // instead of performing these pow calls for each pixel in the image. - for (i = 0, len = 256; i < len; i++) { - this.rVals[i] = Math.pow(i / 255, rInv) * 255; - this.gVals[i] = Math.pow(i / 255, gInv) * 255; - this.bVals[i] = Math.pow(i / 255, bInv) * 255; - } - for (i = 0, len = data.length; i < len; i += 4) { - data[i] = this.rVals[data[i]]; - data[i + 1] = this.gVals[data[i + 1]]; - data[i + 2] = this.bVals[data[i + 2]]; - } - }, - - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function(gl, program) { - return { - uGamma: gl.getUniformLocation(program, 'uGamma'), - }; - }, - - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function(gl, uniformLocations) { - gl.uniform3fv(uniformLocations.uGamma, this.gamma); - }, - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.Gamma} Instance of fabric.Image.filters.Gamma - */ - fabric.Image.filters.Gamma.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * A container class that knows how to apply a sequence of filters to an input image. - */ - filters.Composed = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Composed.prototype */ { - - type: 'Composed', - - /** - * A non sparse array of filters to apply - */ - subFilters: [], - - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function(options) { - this.callSuper('initialize', options); - // create a new array instead mutating the prototype with push - this.subFilters = this.subFilters.slice(0); - }, - - /** - * Apply this container's filters to the input image provided. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be applied. - */ - applyTo: function(options) { - options.passes += this.subFilters.length - 1; - this.subFilters.forEach(function(filter) { - filter.applyTo(options); - }); - }, - - /** - * Serialize this filter into JSON. - * - * @returns {Object} A JSON representation of this filter. - */ - toObject: function() { - return fabric.util.object.extend(this.callSuper('toObject'), { - subFilters: this.subFilters.map(function(filter) { return filter.toObject(); }), - }); - }, - - isNeutralState: function() { - return !this.subFilters.some(function(filter) { return !filter.isNeutralState(); }); - } - }); - - /** - * Deserialize a JSON definition of a ComposedFilter into a concrete instance. - */ - fabric.Image.filters.Composed.fromObject = function(object, callback) { - var filters = object.subFilters || [], - subFilters = filters.map(function(filter) { - return new fabric.Image.filters[filter.type](filter); - }), - instance = new fabric.Image.filters.Composed({ subFilters: subFilters }); - callback && callback(instance); - return instance; - }; -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - filters = fabric.Image.filters, - createClass = fabric.util.createClass; - - /** - * HueRotation filter class - * @class fabric.Image.filters.HueRotation - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.HueRotation#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.HueRotation({ - * rotation: -0.5 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.HueRotation = createClass(filters.ColorMatrix, /** @lends fabric.Image.filters.HueRotation.prototype */ { - - /** - * Filter type - * @param {String} type - * @default - */ - type: 'HueRotation', - - /** - * HueRotation value, from -1 to 1. - * the unit is radians - * @param {Number} myParameter - * @default - */ - rotation: 0, - - /** - * Describe the property that is the filter parameter - * @param {String} m - * @default - */ - mainParameter: 'rotation', - - calculateMatrix: function() { - var rad = this.rotation * Math.PI, cos = fabric.util.cos(rad), sin = fabric.util.sin(rad), - aThird = 1 / 3, aThirdSqtSin = Math.sqrt(aThird) * sin, OneMinusCos = 1 - cos; - this.matrix = [ - 1, 0, 0, 0, 0, - 0, 1, 0, 0, 0, - 0, 0, 1, 0, 0, - 0, 0, 0, 1, 0 - ]; - this.matrix[0] = cos + OneMinusCos / 3; - this.matrix[1] = aThird * OneMinusCos - aThirdSqtSin; - this.matrix[2] = aThird * OneMinusCos + aThirdSqtSin; - this.matrix[5] = aThird * OneMinusCos + aThirdSqtSin; - this.matrix[6] = cos + aThird * OneMinusCos; - this.matrix[7] = aThird * OneMinusCos - aThirdSqtSin; - this.matrix[10] = aThird * OneMinusCos - aThirdSqtSin; - this.matrix[11] = aThird * OneMinusCos + aThirdSqtSin; - this.matrix[12] = cos + aThird * OneMinusCos; - }, - - /** - * HueRotation isNeutralState implementation - * Used only in image applyFilters to discard filters that will not have an effect - * on the image - * @param {Object} options - **/ - isNeutralState: function(options) { - this.calculateMatrix(); - return filters.BaseFilter.prototype.isNeutralState.call(this, options); - }, - - /** - * Apply this filter to the input image data provided. - * - * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be executed - * @param {Boolean} options.webgl Whether to use webgl to render the filter. - * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. - * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - applyTo: function(options) { - this.calculateMatrix(); - filters.BaseFilter.prototype.applyTo.call(this, options); - }, - - }); - - /** - * Returns filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @param {function} [callback] to be invoked after filter creation - * @return {fabric.Image.filters.HueRotation} Instance of fabric.Image.filters.HueRotation - */ - fabric.Image.filters.HueRotation.fromObject = fabric.Image.filters.BaseFilter.fromObject; - -})(typeof exports !== 'undefined' ? exports : this); - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = { }), - clone = fabric.util.object.clone; - - if (fabric.Text) { - fabric.warn('fabric.Text is already defined'); - return; - } - - var additionalProps = - ('fontFamily fontWeight fontSize text underline overline linethrough' + - ' textAlign fontStyle lineHeight textBackgroundColor charSpacing styles' + - ' direction path pathStartOffset pathSide pathAlign').split(' '); - - /** - * Text class - * @class fabric.Text - * @extends fabric.Object - * @return {fabric.Text} thisArg - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#text} - * @see {@link fabric.Text#initialize} for constructor definition - */ - fabric.Text = fabric.util.createClass(fabric.Object, /** @lends fabric.Text.prototype */ { - - /** - * Properties which when set cause object to change dimensions - * @type Array - * @private - */ - _dimensionAffectingProps: [ - 'fontSize', - 'fontWeight', - 'fontFamily', - 'fontStyle', - 'lineHeight', - 'text', - 'charSpacing', - 'textAlign', - 'styles', - 'path', - 'pathStartOffset', - 'pathSide', - 'pathAlign' - ], - - /** - * @private - */ - _reNewline: /\r?\n/, - - /** - * Use this regular expression to filter for whitespaces that is not a new line. - * Mostly used when text is 'justify' aligned. - * @private - */ - _reSpacesAndTabs: /[ \t\r]/g, - - /** - * Use this regular expression to filter for whitespace that is not a new line. - * Mostly used when text is 'justify' aligned. - * @private - */ - _reSpaceAndTab: /[ \t\r]/, - - /** - * Use this regular expression to filter consecutive groups of non spaces. - * Mostly used when text is 'justify' aligned. - * @private - */ - _reWords: /\S+/g, - - /** - * Type of an object - * @type String - * @default - */ - type: 'text', - - /** - * Font size (in pixels) - * @type Number - * @default - */ - fontSize: 40, - - /** - * Font weight (e.g. bold, normal, 400, 600, 800) - * @type {(Number|String)} - * @default - */ - fontWeight: 'normal', - - /** - * Font family - * @type String - * @default - */ - fontFamily: 'Times New Roman', - - /** - * Text decoration underline. - * @type Boolean - * @default - */ - underline: false, - - /** - * Text decoration overline. - * @type Boolean - * @default - */ - overline: false, - - /** - * Text decoration linethrough. - * @type Boolean - * @default - */ - linethrough: false, - - /** - * Text alignment. Possible values: "left", "center", "right", "justify", - * "justify-left", "justify-center" or "justify-right". - * @type String - * @default - */ - textAlign: 'left', - - /** - * Font style . Possible values: "", "normal", "italic" or "oblique". - * @type String - * @default - */ - fontStyle: 'normal', - - /** - * Line height - * @type Number - * @default - */ - lineHeight: 1.16, - - /** - * Superscript schema object (minimum overlap) - * @type {Object} - * @default - */ - superscript: { - size: 0.60, // fontSize factor - baseline: -0.35 // baseline-shift factor (upwards) - }, - - /** - * Subscript schema object (minimum overlap) - * @type {Object} - * @default - */ - subscript: { - size: 0.60, // fontSize factor - baseline: 0.11 // baseline-shift factor (downwards) - }, - - /** - * Background color of text lines - * @type String - * @default - */ - textBackgroundColor: '', - - /** - * List of properties to consider when checking if - * state of an object is changed ({@link fabric.Object#hasStateChanged}) - * as well as for history (undo/redo) purposes - * @type Array - */ - stateProperties: fabric.Object.prototype.stateProperties.concat(additionalProps), - - /** - * List of properties to consider when checking if cache needs refresh - * @type Array - */ - cacheProperties: fabric.Object.prototype.cacheProperties.concat(additionalProps), - - /** - * When defined, an object is rendered via stroke and this property specifies its color. - * Backwards incompatibility note: This property was named "strokeStyle" until v1.1.6 - * @type String - * @default - */ - stroke: null, - - /** - * Shadow object representing shadow of this shape. - * Backwards incompatibility note: This property was named "textShadow" (String) until v1.2.11 - * @type fabric.Shadow - * @default - */ - shadow: null, - - /** - * fabric.Path that the text should follow. - * since 4.6.0 the path will be drawn automatically. - * if you want to make the path visible, give it a stroke and strokeWidth or fill value - * if you want it to be hidden, assign visible = false to the path. - * This feature is in BETA, and SVG import/export is not yet supported. - * @type fabric.Path - * @example - * var textPath = new fabric.Text('Text on a path', { - * top: 150, - * left: 150, - * textAlign: 'center', - * charSpacing: -50, - * path: new fabric.Path('M 0 0 C 50 -100 150 -100 200 0', { - * strokeWidth: 1, - * visible: false - * }), - * pathSide: 'left', - * pathStartOffset: 0 - * }); - * @default - */ - path: null, - - /** - * Offset amount for text path starting position - * Only used when text has a path - * @type Number - * @default - */ - pathStartOffset: 0, - - /** - * Which side of the path the text should be drawn on. - * Only used when text has a path - * @type {String} 'left|right' - * @default - */ - pathSide: 'left', - - /** - * How text is aligned to the path. This property determines - * the perpendicular position of each character relative to the path. - * (one of "baseline", "center", "ascender", "descender") - * This feature is in BETA, and its behavior may change - * @type String - * @default - */ - pathAlign: 'baseline', - - /** - * @private - */ - _fontSizeFraction: 0.222, - - /** - * @private - */ - offsets: { - underline: 0.10, - linethrough: -0.315, - overline: -0.88 - }, - - /** - * Text Line proportion to font Size (in pixels) - * @type Number - * @default - */ - _fontSizeMult: 1.13, - - /** - * additional space between characters - * expressed in thousands of em unit - * @type Number - * @default - */ - charSpacing: 0, - - /** - * Object containing character styles - top-level properties -> line numbers, - * 2nd-level properties - character numbers - * @type Object - * @default - */ - styles: null, - - /** - * Reference to a context to measure text char or couple of chars - * the cacheContext of the canvas will be used or a freshly created one if the object is not on canvas - * once created it will be referenced on fabric._measuringContext to avoid creating a canvas for every - * text object created. - * @type {CanvasRenderingContext2D} - * @default - */ - _measuringContext: null, - - /** - * Baseline shift, styles only, keep at 0 for the main text object - * @type {Number} - * @default - */ - deltaY: 0, - - /** - * WARNING: EXPERIMENTAL. NOT SUPPORTED YET - * determine the direction of the text. - * This has to be set manually together with textAlign and originX for proper - * experience. - * some interesting link for the future - * https://www.w3.org/International/questions/qa-bidi-unicode-controls - * @since 4.5.0 - * @type {String} 'ltr|rtl' - * @default - */ - direction: 'ltr', - - /** - * Array of properties that define a style unit (of 'styles'). - * @type {Array} - * @default - */ - _styleProperties: [ - 'stroke', - 'strokeWidth', - 'fill', - 'fontFamily', - 'fontSize', - 'fontWeight', - 'fontStyle', - 'underline', - 'overline', - 'linethrough', - 'deltaY', - 'textBackgroundColor', - ], - - /** - * contains characters bounding boxes - */ - __charBounds: [], - - /** - * use this size when measuring text. To avoid IE11 rounding errors - * @type {Number} - * @default - * @readonly - * @private - */ - CACHE_FONT_SIZE: 400, - - /** - * contains the min text width to avoid getting 0 - * @type {Number} - * @default - */ - MIN_TEXT_WIDTH: 2, - - /** - * Constructor - * @param {String} text Text string - * @param {Object} [options] Options object - * @return {fabric.Text} thisArg - */ - initialize: function(text, options) { - this.styles = options ? (options.styles || { }) : { }; - this.text = text; - this.__skipDimension = true; - this.callSuper('initialize', options); - if (this.path) { - this.setPathInfo(); - } - this.__skipDimension = false; - this.initDimensions(); - this.setCoords(); - this.setupState({ propertySet: '_dimensionAffectingProps' }); - }, - - /** - * If text has a path, it will add the extra information needed - * for path and text calculations - * @return {fabric.Text} thisArg - */ - setPathInfo: function() { - var path = this.path; - if (path) { - path.segmentsInfo = fabric.util.getPathSegmentsInfo(path.path); - } - }, - - /** - * Return a context for measurement of text string. - * if created it gets stored for reuse - * this is for internal use, please do not use it - * @private - * @param {String} text Text string - * @param {Object} [options] Options object - * @return {fabric.Text} thisArg - */ - getMeasuringContext: function() { - // if we did not return we have to measure something. - if (!fabric._measuringContext) { - fabric._measuringContext = this.canvas && this.canvas.contextCache || - fabric.util.createCanvasElement().getContext('2d'); - } - return fabric._measuringContext; - }, - - /** - * @private - * Divides text into lines of text and lines of graphemes. - */ - _splitText: function() { - var newLines = this._splitTextIntoLines(this.text); - this.textLines = newLines.lines; - this._textLines = newLines.graphemeLines; - this._unwrappedTextLines = newLines._unwrappedLines; - this._text = newLines.graphemeText; - return newLines; - }, - - /** - * Initialize or update text dimensions. - * Updates this.width and this.height with the proper values. - * Does not return dimensions. - */ - initDimensions: function() { - if (this.__skipDimension) { - return; - } - this._splitText(); - this._clearCache(); - if (this.path) { - this.width = this.path.width; - this.height = this.path.height; - } - else { - this.width = this.calcTextWidth() || this.cursorWidth || this.MIN_TEXT_WIDTH; - this.height = this.calcTextHeight(); - } - if (this.textAlign.indexOf('justify') !== -1) { - // once text is measured we need to make space fatter to make justified text. - this.enlargeSpaces(); - } - this.saveState({ propertySet: '_dimensionAffectingProps' }); - }, - - /** - * Enlarge space boxes and shift the others - */ - enlargeSpaces: function() { - var diffSpace, currentLineWidth, numberOfSpaces, accumulatedSpace, line, charBound, spaces; - for (var i = 0, len = this._textLines.length; i < len; i++) { - if (this.textAlign !== 'justify' && (i === len - 1 || this.isEndOfWrapping(i))) { - continue; - } - accumulatedSpace = 0; - line = this._textLines[i]; - currentLineWidth = this.getLineWidth(i); - if (currentLineWidth < this.width && (spaces = this.textLines[i].match(this._reSpacesAndTabs))) { - numberOfSpaces = spaces.length; - diffSpace = (this.width - currentLineWidth) / numberOfSpaces; - for (var j = 0, jlen = line.length; j <= jlen; j++) { - charBound = this.__charBounds[i][j]; - if (this._reSpaceAndTab.test(line[j])) { - charBound.width += diffSpace; - charBound.kernedWidth += diffSpace; - charBound.left += accumulatedSpace; - accumulatedSpace += diffSpace; - } - else { - charBound.left += accumulatedSpace; - } - } - } - } - }, - - /** - * Detect if the text line is ended with an hard break - * text and itext do not have wrapping, return false - * @return {Boolean} - */ - isEndOfWrapping: function(lineIndex) { - return lineIndex === this._textLines.length - 1; - }, - - /** - * Detect if a line has a linebreak and so we need to account for it when moving - * and counting style. - * It return always for text and Itext. - * @return Number - */ - missingNewlineOffset: function() { - return 1; - }, - - /** - * Returns string representation of an instance - * @return {String} String representation of text object - */ - toString: function() { - return '#'; - }, - - /** - * Return the dimension and the zoom level needed to create a cache canvas - * big enough to host the object to be cached. - * @private - * @param {Object} dim.x width of object to be cached - * @param {Object} dim.y height of object to be cached - * @return {Object}.width width of canvas - * @return {Object}.height height of canvas - * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache - * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache - */ - _getCacheCanvasDimensions: function() { - var dims = this.callSuper('_getCacheCanvasDimensions'); - var fontSize = this.fontSize; - dims.width += fontSize * dims.zoomX; - dims.height += fontSize * dims.zoomY; - return dims; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function(ctx) { - var path = this.path; - path && !path.isNotVisible() && path._render(ctx); - this._setTextStyles(ctx); - this._renderTextLinesBackground(ctx); - this._renderTextDecoration(ctx, 'underline'); - this._renderText(ctx); - this._renderTextDecoration(ctx, 'overline'); - this._renderTextDecoration(ctx, 'linethrough'); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderText: function(ctx) { - if (this.paintFirst === 'stroke') { - this._renderTextStroke(ctx); - this._renderTextFill(ctx); - } - else { - this._renderTextFill(ctx); - this._renderTextStroke(ctx); - } - }, - - /** - * Set the font parameter of the context with the object properties or with charStyle - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Object} [charStyle] object with font style properties - * @param {String} [charStyle.fontFamily] Font Family - * @param {Number} [charStyle.fontSize] Font size in pixels. ( without px suffix ) - * @param {String} [charStyle.fontWeight] Font weight - * @param {String} [charStyle.fontStyle] Font style (italic|normal) - */ - _setTextStyles: function(ctx, charStyle, forMeasuring) { - ctx.textBaseline = 'alphabetical'; - if (this.path) { - switch (this.pathAlign) { - case 'center': - ctx.textBaseline = 'middle'; - break; - case 'ascender': - ctx.textBaseline = 'top'; - break; - case 'descender': - ctx.textBaseline = 'bottom'; - break; - } - } - ctx.font = this._getFontDeclaration(charStyle, forMeasuring); - }, - - /** - * calculate and return the text Width measuring each line. - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @return {Number} Maximum width of fabric.Text object - */ - calcTextWidth: function() { - var maxWidth = this.getLineWidth(0); - - for (var i = 1, len = this._textLines.length; i < len; i++) { - var currentLineWidth = this.getLineWidth(i); - if (currentLineWidth > maxWidth) { - maxWidth = currentLineWidth; - } - } - return maxWidth; - }, - - /** - * @private - * @param {String} method Method name ("fillText" or "strokeText") - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {String} line Text to render - * @param {Number} left Left position of text - * @param {Number} top Top position of text - * @param {Number} lineIndex Index of a line in a text - */ - _renderTextLine: function(method, ctx, line, left, top, lineIndex) { - this._renderChars(method, ctx, line, left, top, lineIndex); - }, - - /** - * Renders the text background for lines, taking care of style - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderTextLinesBackground: function(ctx) { - if (!this.textBackgroundColor && !this.styleHas('textBackgroundColor')) { - return; - } - var heightOfLine, - lineLeftOffset, originalFill = ctx.fillStyle, - line, lastColor, - leftOffset = this._getLeftOffset(), - lineTopOffset = this._getTopOffset(), - boxStart = 0, boxWidth = 0, charBox, currentColor, path = this.path, - drawStart; - - for (var i = 0, len = this._textLines.length; i < len; i++) { - heightOfLine = this.getHeightOfLine(i); - if (!this.textBackgroundColor && !this.styleHas('textBackgroundColor', i)) { - lineTopOffset += heightOfLine; - continue; - } - line = this._textLines[i]; - lineLeftOffset = this._getLineLeftOffset(i); - boxWidth = 0; - boxStart = 0; - lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor'); - for (var j = 0, jlen = line.length; j < jlen; j++) { - charBox = this.__charBounds[i][j]; - currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor'); - if (path) { - ctx.save(); - ctx.translate(charBox.renderLeft, charBox.renderTop); - ctx.rotate(charBox.angle); - ctx.fillStyle = currentColor; - currentColor && ctx.fillRect( - -charBox.width / 2, - -heightOfLine / this.lineHeight * (1 - this._fontSizeFraction), - charBox.width, - heightOfLine / this.lineHeight - ); - ctx.restore(); - } - else if (currentColor !== lastColor) { - drawStart = leftOffset + lineLeftOffset + boxStart; - if (this.direction === 'rtl') { - drawStart = this.width - drawStart - boxWidth; - } - ctx.fillStyle = lastColor; - lastColor && ctx.fillRect( - drawStart, - lineTopOffset, - boxWidth, - heightOfLine / this.lineHeight - ); - boxStart = charBox.left; - boxWidth = charBox.width; - lastColor = currentColor; - } - else { - boxWidth += charBox.kernedWidth; - } - } - if (currentColor && !path) { - drawStart = leftOffset + lineLeftOffset + boxStart; - if (this.direction === 'rtl') { - drawStart = this.width - drawStart - boxWidth; - } - ctx.fillStyle = currentColor; - ctx.fillRect( - drawStart, - lineTopOffset, - boxWidth, - heightOfLine / this.lineHeight - ); - } - lineTopOffset += heightOfLine; - } - ctx.fillStyle = originalFill; - // if there is text background color no - // other shadows should be casted - this._removeShadow(ctx); - }, - - /** - * @private - * @param {Object} decl style declaration for cache - * @param {String} decl.fontFamily fontFamily - * @param {String} decl.fontStyle fontStyle - * @param {String} decl.fontWeight fontWeight - * @return {Object} reference to cache - */ - getFontCache: function(decl) { - var fontFamily = decl.fontFamily.toLowerCase(); - if (!fabric.charWidthsCache[fontFamily]) { - fabric.charWidthsCache[fontFamily] = { }; - } - var cache = fabric.charWidthsCache[fontFamily], - cacheProp = decl.fontStyle.toLowerCase() + '_' + (decl.fontWeight + '').toLowerCase(); - if (!cache[cacheProp]) { - cache[cacheProp] = { }; - } - return cache[cacheProp]; - }, - - /** - * measure and return the width of a single character. - * possibly overridden to accommodate different measure logic or - * to hook some external lib for character measurement - * @private - * @param {String} _char, char to be measured - * @param {Object} charStyle style of char to be measured - * @param {String} [previousChar] previous char - * @param {Object} [prevCharStyle] style of previous char - */ - _measureChar: function(_char, charStyle, previousChar, prevCharStyle) { - // first i try to return from cache - var fontCache = this.getFontCache(charStyle), fontDeclaration = this._getFontDeclaration(charStyle), - previousFontDeclaration = this._getFontDeclaration(prevCharStyle), couple = previousChar + _char, - stylesAreEqual = fontDeclaration === previousFontDeclaration, width, coupleWidth, previousWidth, - fontMultiplier = charStyle.fontSize / this.CACHE_FONT_SIZE, kernedWidth; - - if (previousChar && fontCache[previousChar] !== undefined) { - previousWidth = fontCache[previousChar]; - } - if (fontCache[_char] !== undefined) { - kernedWidth = width = fontCache[_char]; - } - if (stylesAreEqual && fontCache[couple] !== undefined) { - coupleWidth = fontCache[couple]; - kernedWidth = coupleWidth - previousWidth; - } - if (width === undefined || previousWidth === undefined || coupleWidth === undefined) { - var ctx = this.getMeasuringContext(); - // send a TRUE to specify measuring font size CACHE_FONT_SIZE - this._setTextStyles(ctx, charStyle, true); - } - if (width === undefined) { - kernedWidth = width = ctx.measureText(_char).width; - fontCache[_char] = width; - } - if (previousWidth === undefined && stylesAreEqual && previousChar) { - previousWidth = ctx.measureText(previousChar).width; - fontCache[previousChar] = previousWidth; - } - if (stylesAreEqual && coupleWidth === undefined) { - // we can measure the kerning couple and subtract the width of the previous character - coupleWidth = ctx.measureText(couple).width; - fontCache[couple] = coupleWidth; - kernedWidth = coupleWidth - previousWidth; - } - return { width: width * fontMultiplier, kernedWidth: kernedWidth * fontMultiplier }; - }, - - /** - * Computes height of character at given position - * @param {Number} line the line index number - * @param {Number} _char the character index number - * @return {Number} fontSize of the character - */ - getHeightOfChar: function(line, _char) { - return this.getValueOfPropertyAt(line, _char, 'fontSize'); - }, - - /** - * measure a text line measuring all characters. - * @param {Number} lineIndex line number - * @return {Number} Line width - */ - measureLine: function(lineIndex) { - var lineInfo = this._measureLine(lineIndex); - if (this.charSpacing !== 0) { - lineInfo.width -= this._getWidthOfCharSpacing(); - } - if (lineInfo.width < 0) { - lineInfo.width = 0; - } - return lineInfo; - }, - - /** - * measure every grapheme of a line, populating __charBounds - * @param {Number} lineIndex - * @return {Object} object.width total width of characters - * @return {Object} object.widthOfSpaces length of chars that match this._reSpacesAndTabs - */ - _measureLine: function(lineIndex) { - var width = 0, i, grapheme, line = this._textLines[lineIndex], prevGrapheme, - graphemeInfo, numOfSpaces = 0, lineBounds = new Array(line.length), - positionInPath = 0, startingPoint, totalPathLength, path = this.path, - reverse = this.pathSide === 'right'; - - this.__charBounds[lineIndex] = lineBounds; - for (i = 0; i < line.length; i++) { - grapheme = line[i]; - graphemeInfo = this._getGraphemeBox(grapheme, lineIndex, i, prevGrapheme); - lineBounds[i] = graphemeInfo; - width += graphemeInfo.kernedWidth; - prevGrapheme = grapheme; - } - // this latest bound box represent the last character of the line - // to simplify cursor handling in interactive mode. - lineBounds[i] = { - left: graphemeInfo ? graphemeInfo.left + graphemeInfo.width : 0, - width: 0, - kernedWidth: 0, - height: this.fontSize - }; - if (path) { - totalPathLength = path.segmentsInfo[path.segmentsInfo.length - 1].length; - startingPoint = fabric.util.getPointOnPath(path.path, 0, path.segmentsInfo); - startingPoint.x += path.pathOffset.x; - startingPoint.y += path.pathOffset.y; - switch (this.textAlign) { - case 'left': - positionInPath = reverse ? (totalPathLength - width) : 0; - break; - case 'center': - positionInPath = (totalPathLength - width) / 2; - break; - case 'right': - positionInPath = reverse ? 0 : (totalPathLength - width); - break; - //todo - add support for justify - } - positionInPath += this.pathStartOffset * (reverse ? -1 : 1); - for (i = reverse ? line.length - 1 : 0; - reverse ? i >= 0 : i < line.length; - reverse ? i-- : i++) { - graphemeInfo = lineBounds[i]; - if (positionInPath > totalPathLength) { - positionInPath %= totalPathLength; - } - else if (positionInPath < 0) { - positionInPath += totalPathLength; - } - // it would probably much faster to send all the grapheme position for a line - // and calculate path position/angle at once. - this._setGraphemeOnPath(positionInPath, graphemeInfo, startingPoint); - positionInPath += graphemeInfo.kernedWidth; - } - } - return { width: width, numOfSpaces: numOfSpaces }; - }, - - /** - * Calculate the angle and the left,top position of the char that follow a path. - * It appends it to graphemeInfo to be reused later at rendering - * @private - * @param {Number} positionInPath to be measured - * @param {Object} graphemeInfo current grapheme box information - * @param {Object} startingPoint position of the point - */ - _setGraphemeOnPath: function(positionInPath, graphemeInfo, startingPoint) { - var centerPosition = positionInPath + graphemeInfo.kernedWidth / 2, - path = this.path; - - // we are at currentPositionOnPath. we want to know what point on the path is. - var info = fabric.util.getPointOnPath(path.path, centerPosition, path.segmentsInfo); - graphemeInfo.renderLeft = info.x - startingPoint.x; - graphemeInfo.renderTop = info.y - startingPoint.y; - graphemeInfo.angle = info.angle + (this.pathSide === 'right' ? Math.PI : 0); - }, - - /** - * Measure and return the info of a single grapheme. - * needs the the info of previous graphemes already filled - * @private - * @param {String} grapheme to be measured - * @param {Number} lineIndex index of the line where the char is - * @param {Number} charIndex position in the line - * @param {String} [prevGrapheme] character preceding the one to be measured - */ - _getGraphemeBox: function(grapheme, lineIndex, charIndex, prevGrapheme, skipLeft) { - var style = this.getCompleteStyleDeclaration(lineIndex, charIndex), - prevStyle = prevGrapheme ? this.getCompleteStyleDeclaration(lineIndex, charIndex - 1) : { }, - info = this._measureChar(grapheme, style, prevGrapheme, prevStyle), - kernedWidth = info.kernedWidth, - width = info.width, charSpacing; - - if (this.charSpacing !== 0) { - charSpacing = this._getWidthOfCharSpacing(); - width += charSpacing; - kernedWidth += charSpacing; - } - - var box = { - width: width, - left: 0, - height: style.fontSize, - kernedWidth: kernedWidth, - deltaY: style.deltaY, - }; - if (charIndex > 0 && !skipLeft) { - var previousBox = this.__charBounds[lineIndex][charIndex - 1]; - box.left = previousBox.left + previousBox.width + info.kernedWidth - info.width; - } - return box; - }, - - /** - * Calculate height of line at 'lineIndex' - * @param {Number} lineIndex index of line to calculate - * @return {Number} - */ - getHeightOfLine: function(lineIndex) { - if (this.__lineHeights[lineIndex]) { - return this.__lineHeights[lineIndex]; - } - - var line = this._textLines[lineIndex], - // char 0 is measured before the line cycle because it nneds to char - // emptylines - maxHeight = this.getHeightOfChar(lineIndex, 0); - for (var i = 1, len = line.length; i < len; i++) { - maxHeight = Math.max(this.getHeightOfChar(lineIndex, i), maxHeight); - } - - return this.__lineHeights[lineIndex] = maxHeight * this.lineHeight * this._fontSizeMult; - }, - - /** - * Calculate text box height - */ - calcTextHeight: function() { - var lineHeight, height = 0; - for (var i = 0, len = this._textLines.length; i < len; i++) { - lineHeight = this.getHeightOfLine(i); - height += (i === len - 1 ? lineHeight / this.lineHeight : lineHeight); - } - return height; - }, - - /** - * @private - * @return {Number} Left offset - */ - _getLeftOffset: function() { - return this.direction === 'ltr' ? -this.width / 2 : this.width / 2; - }, - - /** - * @private - * @return {Number} Top offset - */ - _getTopOffset: function() { - return -this.height / 2; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {String} method Method name ("fillText" or "strokeText") - */ - _renderTextCommon: function(ctx, method) { - ctx.save(); - var lineHeights = 0, left = this._getLeftOffset(), top = this._getTopOffset(); - for (var i = 0, len = this._textLines.length; i < len; i++) { - var heightOfLine = this.getHeightOfLine(i), - maxHeight = heightOfLine / this.lineHeight, - leftOffset = this._getLineLeftOffset(i); - this._renderTextLine( - method, - ctx, - this._textLines[i], - left + leftOffset, - top + lineHeights + maxHeight, - i - ); - lineHeights += heightOfLine; - } - ctx.restore(); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderTextFill: function(ctx) { - if (!this.fill && !this.styleHas('fill')) { - return; - } - - this._renderTextCommon(ctx, 'fillText'); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderTextStroke: function(ctx) { - if ((!this.stroke || this.strokeWidth === 0) && this.isEmptyStyles()) { - return; - } - - if (this.shadow && !this.shadow.affectStroke) { - this._removeShadow(ctx); - } - - ctx.save(); - this._setLineDash(ctx, this.strokeDashArray); - ctx.beginPath(); - this._renderTextCommon(ctx, 'strokeText'); - ctx.closePath(); - ctx.restore(); - }, - - /** - * @private - * @param {String} method fillText or strokeText. - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Array} line Content of the line, splitted in an array by grapheme - * @param {Number} left - * @param {Number} top - * @param {Number} lineIndex - */ - _renderChars: function(method, ctx, line, left, top, lineIndex) { - // set proper line offset - var lineHeight = this.getHeightOfLine(lineIndex), - isJustify = this.textAlign.indexOf('justify') !== -1, - actualStyle, - nextStyle, - charsToRender = '', - charBox, - boxWidth = 0, - timeToRender, - path = this.path, - shortCut = !isJustify && this.charSpacing === 0 && this.isEmptyStyles(lineIndex) && !path, - isLtr = this.direction === 'ltr', sign = this.direction === 'ltr' ? 1 : -1, - drawingLeft, currentDirection = ctx.canvas.getAttribute('dir'); - ctx.save(); - if (currentDirection !== this.direction) { - ctx.canvas.setAttribute('dir', isLtr ? 'ltr' : 'rtl'); - ctx.direction = isLtr ? 'ltr' : 'rtl'; - ctx.textAlign = isLtr ? 'left' : 'right'; - } - top -= lineHeight * this._fontSizeFraction / this.lineHeight; - if (shortCut) { - // render all the line in one pass without checking - // drawingLeft = isLtr ? left : left - this.getLineWidth(lineIndex); - this._renderChar(method, ctx, lineIndex, 0, line.join(''), left, top, lineHeight); - ctx.restore(); - return; - } - for (var i = 0, len = line.length - 1; i <= len; i++) { - timeToRender = i === len || this.charSpacing || path; - charsToRender += line[i]; - charBox = this.__charBounds[lineIndex][i]; - if (boxWidth === 0) { - left += sign * (charBox.kernedWidth - charBox.width); - boxWidth += charBox.width; - } - else { - boxWidth += charBox.kernedWidth; - } - if (isJustify && !timeToRender) { - if (this._reSpaceAndTab.test(line[i])) { - timeToRender = true; - } - } - if (!timeToRender) { - // if we have charSpacing, we render char by char - actualStyle = actualStyle || this.getCompleteStyleDeclaration(lineIndex, i); - nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1); - timeToRender = this._hasStyleChanged(actualStyle, nextStyle); - } - if (timeToRender) { - if (path) { - ctx.save(); - ctx.translate(charBox.renderLeft, charBox.renderTop); - ctx.rotate(charBox.angle); - this._renderChar(method, ctx, lineIndex, i, charsToRender, -boxWidth / 2, 0, lineHeight); - ctx.restore(); - } - else { - drawingLeft = left; - this._renderChar(method, ctx, lineIndex, i, charsToRender, drawingLeft, top, lineHeight); - } - charsToRender = ''; - actualStyle = nextStyle; - left += sign * boxWidth; - boxWidth = 0; - } - } - ctx.restore(); - }, - - /** - * This function try to patch the missing gradientTransform on canvas gradients. - * transforming a context to transform the gradient, is going to transform the stroke too. - * we want to transform the gradient but not the stroke operation, so we create - * a transformed gradient on a pattern and then we use the pattern instead of the gradient. - * this method has drawbacks: is slow, is in low resolution, needs a patch for when the size - * is limited. - * @private - * @param {fabric.Gradient} filler a fabric gradient instance - * @return {CanvasPattern} a pattern to use as fill/stroke style - */ - _applyPatternGradientTransformText: function(filler) { - var pCanvas = fabric.util.createCanvasElement(), pCtx, - // TODO: verify compatibility with strokeUniform - width = this.width + this.strokeWidth, height = this.height + this.strokeWidth; - pCanvas.width = width; - pCanvas.height = height; - pCtx = pCanvas.getContext('2d'); - pCtx.beginPath(); pCtx.moveTo(0, 0); pCtx.lineTo(width, 0); pCtx.lineTo(width, height); - pCtx.lineTo(0, height); pCtx.closePath(); - pCtx.translate(width / 2, height / 2); - pCtx.fillStyle = filler.toLive(pCtx); - this._applyPatternGradientTransform(pCtx, filler); - pCtx.fill(); - return pCtx.createPattern(pCanvas, 'no-repeat'); - }, - - handleFiller: function(ctx, property, filler) { - var offsetX, offsetY; - if (filler.toLive) { - if (filler.gradientUnits === 'percentage' || filler.gradientTransform || filler.patternTransform) { - // need to transform gradient in a pattern. - // this is a slow process. If you are hitting this codepath, and the object - // is not using caching, you should consider switching it on. - // we need a canvas as big as the current object caching canvas. - offsetX = -this.width / 2; - offsetY = -this.height / 2; - ctx.translate(offsetX, offsetY); - ctx[property] = this._applyPatternGradientTransformText(filler); - return { offsetX: offsetX, offsetY: offsetY }; - } - else { - // is a simple gradient or pattern - ctx[property] = filler.toLive(ctx, this); - return this._applyPatternGradientTransform(ctx, filler); - } - } - else { - // is a color - ctx[property] = filler; - } - return { offsetX: 0, offsetY: 0 }; - }, - - _setStrokeStyles: function(ctx, decl) { - ctx.lineWidth = decl.strokeWidth; - ctx.lineCap = this.strokeLineCap; - ctx.lineDashOffset = this.strokeDashOffset; - ctx.lineJoin = this.strokeLineJoin; - ctx.miterLimit = this.strokeMiterLimit; - return this.handleFiller(ctx, 'strokeStyle', decl.stroke); - }, - - _setFillStyles: function(ctx, decl) { - return this.handleFiller(ctx, 'fillStyle', decl.fill); - }, - - /** - * @private - * @param {String} method - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Number} lineIndex - * @param {Number} charIndex - * @param {String} _char - * @param {Number} left Left coordinate - * @param {Number} top Top coordinate - * @param {Number} lineHeight Height of the line - */ - _renderChar: function(method, ctx, lineIndex, charIndex, _char, left, top) { - var decl = this._getStyleDeclaration(lineIndex, charIndex), - fullDecl = this.getCompleteStyleDeclaration(lineIndex, charIndex), - shouldFill = method === 'fillText' && fullDecl.fill, - shouldStroke = method === 'strokeText' && fullDecl.stroke && fullDecl.strokeWidth, - fillOffsets, strokeOffsets; - - if (!shouldStroke && !shouldFill) { - return; - } - ctx.save(); - - shouldFill && (fillOffsets = this._setFillStyles(ctx, fullDecl)); - shouldStroke && (strokeOffsets = this._setStrokeStyles(ctx, fullDecl)); - - ctx.font = this._getFontDeclaration(fullDecl); - - - if (decl && decl.textBackgroundColor) { - this._removeShadow(ctx); - } - if (decl && decl.deltaY) { - top += decl.deltaY; - } - shouldFill && ctx.fillText(_char, left - fillOffsets.offsetX, top - fillOffsets.offsetY); - shouldStroke && ctx.strokeText(_char, left - strokeOffsets.offsetX, top - strokeOffsets.offsetY); - ctx.restore(); - }, - - /** - * Turns the character into a 'superior figure' (i.e. 'superscript') - * @param {Number} start selection start - * @param {Number} end selection end - * @returns {fabric.Text} thisArg - * @chainable - */ - setSuperscript: function(start, end) { - return this._setScript(start, end, this.superscript); - }, - - /** - * Turns the character into an 'inferior figure' (i.e. 'subscript') - * @param {Number} start selection start - * @param {Number} end selection end - * @returns {fabric.Text} thisArg - * @chainable - */ - setSubscript: function(start, end) { - return this._setScript(start, end, this.subscript); - }, - - /** - * Applies 'schema' at given position - * @private - * @param {Number} start selection start - * @param {Number} end selection end - * @param {Number} schema - * @returns {fabric.Text} thisArg - * @chainable - */ - _setScript: function(start, end, schema) { - var loc = this.get2DCursorLocation(start, true), - fontSize = this.getValueOfPropertyAt(loc.lineIndex, loc.charIndex, 'fontSize'), - dy = this.getValueOfPropertyAt(loc.lineIndex, loc.charIndex, 'deltaY'), - style = { fontSize: fontSize * schema.size, deltaY: dy + fontSize * schema.baseline }; - this.setSelectionStyles(style, start, end); - return this; - }, - - /** - * @private - * @param {Object} prevStyle - * @param {Object} thisStyle - */ - _hasStyleChanged: function(prevStyle, thisStyle) { - return prevStyle.fill !== thisStyle.fill || - prevStyle.stroke !== thisStyle.stroke || - prevStyle.strokeWidth !== thisStyle.strokeWidth || - prevStyle.fontSize !== thisStyle.fontSize || - prevStyle.fontFamily !== thisStyle.fontFamily || - prevStyle.fontWeight !== thisStyle.fontWeight || - prevStyle.fontStyle !== thisStyle.fontStyle || - prevStyle.deltaY !== thisStyle.deltaY; - }, - - /** - * @private - * @param {Object} prevStyle - * @param {Object} thisStyle - */ - _hasStyleChangedForSvg: function(prevStyle, thisStyle) { - return this._hasStyleChanged(prevStyle, thisStyle) || - prevStyle.overline !== thisStyle.overline || - prevStyle.underline !== thisStyle.underline || - prevStyle.linethrough !== thisStyle.linethrough; - }, - - /** - * @private - * @param {Number} lineIndex index text line - * @return {Number} Line left offset - */ - _getLineLeftOffset: function(lineIndex) { - var lineWidth = this.getLineWidth(lineIndex), - lineDiff = this.width - lineWidth, textAlign = this.textAlign, direction = this.direction, - isEndOfWrapping, leftOffset = 0, isEndOfWrapping = this.isEndOfWrapping(lineIndex); - if (textAlign === 'justify' - || (textAlign === 'justify-center' && !isEndOfWrapping) - || (textAlign === 'justify-right' && !isEndOfWrapping) - || (textAlign === 'justify-left' && !isEndOfWrapping) - ) { - return 0; - } - if (textAlign === 'center') { - leftOffset = lineDiff / 2; - } - if (textAlign === 'right') { - leftOffset = lineDiff; - } - if (textAlign === 'justify-center') { - leftOffset = lineDiff / 2; - } - if (textAlign === 'justify-right') { - leftOffset = lineDiff; - } - if (direction === 'rtl') { - leftOffset -= lineDiff; - } - return leftOffset; - }, - - /** - * @private - */ - _clearCache: function() { - this.__lineWidths = []; - this.__lineHeights = []; - this.__charBounds = []; - }, - - /** - * @private - */ - _shouldClearDimensionCache: function() { - var shouldClear = this._forceClearCache; - shouldClear || (shouldClear = this.hasStateChanged('_dimensionAffectingProps')); - if (shouldClear) { - this.dirty = true; - this._forceClearCache = false; - } - return shouldClear; - }, - - /** - * Measure a single line given its index. Used to calculate the initial - * text bounding box. The values are calculated and stored in __lineWidths cache. - * @private - * @param {Number} lineIndex line number - * @return {Number} Line width - */ - getLineWidth: function(lineIndex) { - if (this.__lineWidths[lineIndex] !== undefined) { - return this.__lineWidths[lineIndex]; - } - - var lineInfo = this.measureLine(lineIndex); - var width = lineInfo.width; - this.__lineWidths[lineIndex] = width; - return width; - }, - - _getWidthOfCharSpacing: function() { - if (this.charSpacing !== 0) { - return this.fontSize * this.charSpacing / 1000; - } - return 0; - }, - - /** - * Retrieves the value of property at given character position - * @param {Number} lineIndex the line number - * @param {Number} charIndex the character number - * @param {String} property the property name - * @returns the value of 'property' - */ - getValueOfPropertyAt: function(lineIndex, charIndex, property) { - var charStyle = this._getStyleDeclaration(lineIndex, charIndex); - if (charStyle && typeof charStyle[property] !== 'undefined') { - return charStyle[property]; - } - return this[property]; - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderTextDecoration: function(ctx, type) { - if (!this[type] && !this.styleHas(type)) { - return; - } - var heightOfLine, size, _size, - lineLeftOffset, dy, _dy, - line, lastDecoration, - leftOffset = this._getLeftOffset(), - topOffset = this._getTopOffset(), top, - boxStart, boxWidth, charBox, currentDecoration, - maxHeight, currentFill, lastFill, path = this.path, - charSpacing = this._getWidthOfCharSpacing(), - offsetY = this.offsets[type]; - - for (var i = 0, len = this._textLines.length; i < len; i++) { - heightOfLine = this.getHeightOfLine(i); - if (!this[type] && !this.styleHas(type, i)) { - topOffset += heightOfLine; - continue; - } - line = this._textLines[i]; - maxHeight = heightOfLine / this.lineHeight; - lineLeftOffset = this._getLineLeftOffset(i); - boxStart = 0; - boxWidth = 0; - lastDecoration = this.getValueOfPropertyAt(i, 0, type); - lastFill = this.getValueOfPropertyAt(i, 0, 'fill'); - top = topOffset + maxHeight * (1 - this._fontSizeFraction); - size = this.getHeightOfChar(i, 0); - dy = this.getValueOfPropertyAt(i, 0, 'deltaY'); - for (var j = 0, jlen = line.length; j < jlen; j++) { - charBox = this.__charBounds[i][j]; - currentDecoration = this.getValueOfPropertyAt(i, j, type); - currentFill = this.getValueOfPropertyAt(i, j, 'fill'); - _size = this.getHeightOfChar(i, j); - _dy = this.getValueOfPropertyAt(i, j, 'deltaY'); - if (path && currentDecoration && currentFill) { - ctx.save(); - ctx.fillStyle = lastFill; - ctx.translate(charBox.renderLeft, charBox.renderTop); - ctx.rotate(charBox.angle); - ctx.fillRect( - -charBox.kernedWidth / 2, - offsetY * _size + _dy, - charBox.kernedWidth, - this.fontSize / 15 - ); - ctx.restore(); - } - else if ( - (currentDecoration !== lastDecoration || currentFill !== lastFill || _size !== size || _dy !== dy) - && boxWidth > 0 - ) { - var drawStart = leftOffset + lineLeftOffset + boxStart; - if (this.direction === 'rtl') { - drawStart = this.width - drawStart - boxWidth; - } - if (lastDecoration && lastFill) { - ctx.fillStyle = lastFill; - ctx.fillRect( - drawStart, - top + offsetY * size + dy, - boxWidth, - this.fontSize / 15 - ); - } - boxStart = charBox.left; - boxWidth = charBox.width; - lastDecoration = currentDecoration; - lastFill = currentFill; - size = _size; - dy = _dy; - } - else { - boxWidth += charBox.kernedWidth; - } - } - var drawStart = leftOffset + lineLeftOffset + boxStart; - if (this.direction === 'rtl') { - drawStart = this.width - drawStart - boxWidth; - } - ctx.fillStyle = currentFill; - currentDecoration && currentFill && ctx.fillRect( - drawStart, - top + offsetY * size + dy, - boxWidth - charSpacing, - this.fontSize / 15 - ); - topOffset += heightOfLine; - } - // if there is text background color no - // other shadows should be casted - this._removeShadow(ctx); - }, - - /** - * return font declaration string for canvas context - * @param {Object} [styleObject] object - * @returns {String} font declaration formatted for canvas context. - */ - _getFontDeclaration: function(styleObject, forMeasuring) { - var style = styleObject || this, family = this.fontFamily, - fontIsGeneric = fabric.Text.genericFonts.indexOf(family.toLowerCase()) > -1; - var fontFamily = family === undefined || - family.indexOf('\'') > -1 || family.indexOf(',') > -1 || - family.indexOf('"') > -1 || fontIsGeneric - ? style.fontFamily : '"' + style.fontFamily + '"'; - return [ - // node-canvas needs "weight style", while browsers need "style weight" - // verify if this can be fixed in JSDOM - (fabric.isLikelyNode ? style.fontWeight : style.fontStyle), - (fabric.isLikelyNode ? style.fontStyle : style.fontWeight), - forMeasuring ? this.CACHE_FONT_SIZE + 'px' : style.fontSize + 'px', - fontFamily - ].join(' '); - }, - - /** - * Renders text instance on a specified context - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - render: function(ctx) { - // do not render if object is not visible - if (!this.visible) { - return; - } - if (this.canvas && this.canvas.skipOffscreen && !this.group && !this.isOnScreen()) { - return; - } - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - } - this.callSuper('render', ctx); - }, - - /** - * Returns the text as an array of lines. - * @param {String} text text to split - * @returns {Array} Lines in the text - */ - _splitTextIntoLines: function(text) { - var lines = text.split(this._reNewline), - newLines = new Array(lines.length), - newLine = ['\n'], - newText = []; - for (var i = 0; i < lines.length; i++) { - newLines[i] = fabric.util.string.graphemeSplit(lines[i]); - newText = newText.concat(newLines[i], newLine); - } - newText.pop(); - return { _unwrappedLines: newLines, lines: lines, graphemeText: newText, graphemeLines: newLines }; - }, - - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toObject: function(propertiesToInclude) { - var allProperties = additionalProps.concat(propertiesToInclude); - var obj = this.callSuper('toObject', allProperties); - // styles will be overridden with a properly cloned structure - obj.styles = clone(this.styles, true); - if (obj.path) { - obj.path = this.path.toObject(); - } - return obj; - }, - - /** - * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`. - * @param {String|Object} key Property name or object (if object, iterate over the object properties) - * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one) - * @return {fabric.Object} thisArg - * @chainable - */ - set: function(key, value) { - this.callSuper('set', key, value); - var needsDims = false; - var isAddingPath = false; - if (typeof key === 'object') { - for (var _key in key) { - if (_key === 'path') { - this.setPathInfo(); - } - needsDims = needsDims || this._dimensionAffectingProps.indexOf(_key) !== -1; - isAddingPath = isAddingPath || _key === 'path'; - } - } - else { - needsDims = this._dimensionAffectingProps.indexOf(key) !== -1; - isAddingPath = key === 'path'; - } - if (isAddingPath) { - this.setPathInfo(); - } - if (needsDims) { - this.initDimensions(); - this.setCoords(); - } - return this; - }, - - /** - * Returns complexity of an instance - * @return {Number} complexity - */ - complexity: function() { - return 1; - } - }); - - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Text.fromElement}) - * @static - * @memberOf fabric.Text - * @see: http://www.w3.org/TR/SVG/text.html#TextElement - */ - fabric.Text.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat( - 'x y dx dy font-family font-style font-weight font-size letter-spacing text-decoration text-anchor'.split(' ')); - - /** - * Default SVG font size - * @static - * @memberOf fabric.Text - */ - fabric.Text.DEFAULT_SVG_FONT_SIZE = 16; - - /** - * Returns fabric.Text instance from an SVG element (not yet implemented) - * @static - * @memberOf fabric.Text - * @param {SVGElement} element Element to parse - * @param {Function} callback callback function invoked after parsing - * @param {Object} [options] Options object - */ - fabric.Text.fromElement = function(element, callback, options) { - if (!element) { - return callback(null); - } - - var parsedAttributes = fabric.parseAttributes(element, fabric.Text.ATTRIBUTE_NAMES), - parsedAnchor = parsedAttributes.textAnchor || 'left'; - options = fabric.util.object.extend((options ? clone(options) : { }), parsedAttributes); - - options.top = options.top || 0; - options.left = options.left || 0; - if (parsedAttributes.textDecoration) { - var textDecoration = parsedAttributes.textDecoration; - if (textDecoration.indexOf('underline') !== -1) { - options.underline = true; - } - if (textDecoration.indexOf('overline') !== -1) { - options.overline = true; - } - if (textDecoration.indexOf('line-through') !== -1) { - options.linethrough = true; - } - delete options.textDecoration; - } - if ('dx' in parsedAttributes) { - options.left += parsedAttributes.dx; - } - if ('dy' in parsedAttributes) { - options.top += parsedAttributes.dy; - } - if (!('fontSize' in options)) { - options.fontSize = fabric.Text.DEFAULT_SVG_FONT_SIZE; - } - - var textContent = ''; - - // The XML is not properly parsed in IE9 so a workaround to get - // textContent is through firstChild.data. Another workaround would be - // to convert XML loaded from a file to be converted using DOMParser (same way loadSVGFromString() does) - if (!('textContent' in element)) { - if ('firstChild' in element && element.firstChild !== null) { - if ('data' in element.firstChild && element.firstChild.data !== null) { - textContent = element.firstChild.data; - } - } - } - else { - textContent = element.textContent; - } - - textContent = textContent.replace(/^\s+|\s+$|\n+/g, '').replace(/\s+/g, ' '); - var originalStrokeWidth = options.strokeWidth; - options.strokeWidth = 0; - - var text = new fabric.Text(textContent, options), - textHeightScaleFactor = text.getScaledHeight() / text.height, - lineHeightDiff = (text.height + text.strokeWidth) * text.lineHeight - text.height, - scaledDiff = lineHeightDiff * textHeightScaleFactor, - textHeight = text.getScaledHeight() + scaledDiff, - offX = 0; - /* - Adjust positioning: - x/y attributes in SVG correspond to the bottom-left corner of text bounding box - fabric output by default at top, left. - */ - if (parsedAnchor === 'center') { - offX = text.getScaledWidth() / 2; - } - if (parsedAnchor === 'right') { - offX = text.getScaledWidth(); - } - text.set({ - left: text.left - offX, - top: text.top - (textHeight - text.fontSize * (0.07 + text._fontSizeFraction)) / text.lineHeight, - strokeWidth: typeof originalStrokeWidth !== 'undefined' ? originalStrokeWidth : 1, - }); - callback(text); - }; - /* _FROM_SVG_END_ */ - - /** - * Returns fabric.Text instance from an object representation - * @static - * @memberOf fabric.Text - * @param {Object} object plain js Object to create an instance from - * @param {Function} [callback] Callback to invoke when an fabric.Text instance is created - */ - fabric.Text.fromObject = function(object, callback) { - var objectCopy = clone(object), path = object.path; - delete objectCopy.path; - return fabric.Object._fromObject('Text', objectCopy, function(textInstance) { - if (path) { - fabric.Object._fromObject('Path', path, function(pathInstance) { - textInstance.set('path', pathInstance); - callback(textInstance); - }, 'path'); - } - else { - callback(textInstance); - } - }, 'text'); - }; - - fabric.Text.genericFonts = ['sans-serif', 'serif', 'cursive', 'fantasy', 'monospace']; - - fabric.util.createAccessors && fabric.util.createAccessors(fabric.Text); - -})(typeof exports !== 'undefined' ? exports : this); - - -(function() { - fabric.util.object.extend(fabric.Text.prototype, /** @lends fabric.Text.prototype */ { - /** - * Returns true if object has no styling or no styling in a line - * @param {Number} lineIndex , lineIndex is on wrapped lines. - * @return {Boolean} - */ - isEmptyStyles: function(lineIndex) { - if (!this.styles) { - return true; - } - if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) { - return true; - } - var obj = typeof lineIndex === 'undefined' ? this.styles : { line: this.styles[lineIndex] }; - for (var p1 in obj) { - for (var p2 in obj[p1]) { - // eslint-disable-next-line no-unused-vars - for (var p3 in obj[p1][p2]) { - return false; - } - } - } - return true; - }, - - /** - * Returns true if object has a style property or has it ina specified line - * This function is used to detect if a text will use a particular property or not. - * @param {String} property to check for - * @param {Number} lineIndex to check the style on - * @return {Boolean} - */ - styleHas: function(property, lineIndex) { - if (!this.styles || !property || property === '') { - return false; - } - if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) { - return false; - } - var obj = typeof lineIndex === 'undefined' ? this.styles : { 0: this.styles[lineIndex] }; - // eslint-disable-next-line - for (var p1 in obj) { - // eslint-disable-next-line - for (var p2 in obj[p1]) { - if (typeof obj[p1][p2][property] !== 'undefined') { - return true; - } - } - } - return false; - }, - - /** - * Check if characters in a text have a value for a property - * whose value matches the textbox's value for that property. If so, - * the character-level property is deleted. If the character - * has no other properties, then it is also deleted. Finally, - * if the line containing that character has no other characters - * then it also is deleted. - * - * @param {string} property The property to compare between characters and text. - */ - cleanStyle: function(property) { - if (!this.styles || !property || property === '') { - return false; - } - var obj = this.styles, stylesCount = 0, letterCount, stylePropertyValue, - allStyleObjectPropertiesMatch = true, graphemeCount = 0, styleObject; - // eslint-disable-next-line - for (var p1 in obj) { - letterCount = 0; - // eslint-disable-next-line - for (var p2 in obj[p1]) { - var styleObject = obj[p1][p2], - stylePropertyHasBeenSet = styleObject.hasOwnProperty(property); - - stylesCount++; - - if (stylePropertyHasBeenSet) { - if (!stylePropertyValue) { - stylePropertyValue = styleObject[property]; - } - else if (styleObject[property] !== stylePropertyValue) { - allStyleObjectPropertiesMatch = false; - } - - if (styleObject[property] === this[property]) { - delete styleObject[property]; - } - } - else { - allStyleObjectPropertiesMatch = false; - } - - if (Object.keys(styleObject).length !== 0) { - letterCount++; - } - else { - delete obj[p1][p2]; - } - } - - if (letterCount === 0) { - delete obj[p1]; - } - } - // if every grapheme has the same style set then - // delete those styles and set it on the parent - for (var i = 0; i < this._textLines.length; i++) { - graphemeCount += this._textLines[i].length; - } - if (allStyleObjectPropertiesMatch && stylesCount === graphemeCount) { - this[property] = stylePropertyValue; - this.removeStyle(property); - } - }, - - /** - * Remove a style property or properties from all individual character styles - * in a text object. Deletes the character style object if it contains no other style - * props. Deletes a line style object if it contains no other character styles. - * - * @param {String} props The property to remove from character styles. - */ - removeStyle: function(property) { - if (!this.styles || !property || property === '') { - return; - } - var obj = this.styles, line, lineNum, charNum; - for (lineNum in obj) { - line = obj[lineNum]; - for (charNum in line) { - delete line[charNum][property]; - if (Object.keys(line[charNum]).length === 0) { - delete line[charNum]; - } - } - if (Object.keys(line).length === 0) { - delete obj[lineNum]; - } - } - }, - - /** - * @private - */ - _extendStyles: function(index, styles) { - var loc = this.get2DCursorLocation(index); - - if (!this._getLineStyle(loc.lineIndex)) { - this._setLineStyle(loc.lineIndex); - } - - if (!this._getStyleDeclaration(loc.lineIndex, loc.charIndex)) { - this._setStyleDeclaration(loc.lineIndex, loc.charIndex, {}); - } - - fabric.util.object.extend(this._getStyleDeclaration(loc.lineIndex, loc.charIndex), styles); - }, - - /** - * Returns 2d representation (lineIndex and charIndex) of cursor (or selection start) - * @param {Number} [selectionStart] Optional index. When not given, current selectionStart is used. - * @param {Boolean} [skipWrapping] consider the location for unwrapped lines. useful to manage styles. - */ - get2DCursorLocation: function(selectionStart, skipWrapping) { - if (typeof selectionStart === 'undefined') { - selectionStart = this.selectionStart; - } - var lines = skipWrapping ? this._unwrappedTextLines : this._textLines, - len = lines.length; - for (var i = 0; i < len; i++) { - if (selectionStart <= lines[i].length) { - return { - lineIndex: i, - charIndex: selectionStart - }; - } - selectionStart -= lines[i].length + this.missingNewlineOffset(i); - } - return { - lineIndex: i - 1, - charIndex: lines[i - 1].length < selectionStart ? lines[i - 1].length : selectionStart - }; - }, - - /** - * Gets style of a current selection/cursor (at the start position) - * if startIndex or endIndex are not provided, selectionStart or selectionEnd will be used. - * @param {Number} [startIndex] Start index to get styles at - * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1 - * @param {Boolean} [complete] get full style or not - * @return {Array} styles an array with one, zero or more Style objects - */ - getSelectionStyles: function(startIndex, endIndex, complete) { - if (typeof startIndex === 'undefined') { - startIndex = this.selectionStart || 0; - } - if (typeof endIndex === 'undefined') { - endIndex = this.selectionEnd || startIndex; - } - var styles = []; - for (var i = startIndex; i < endIndex; i++) { - styles.push(this.getStyleAtPosition(i, complete)); - } - return styles; - }, - - /** - * Gets style of a current selection/cursor position - * @param {Number} position to get styles at - * @param {Boolean} [complete] full style if true - * @return {Object} style Style object at a specified index - * @private - */ - getStyleAtPosition: function(position, complete) { - var loc = this.get2DCursorLocation(position), - style = complete ? this.getCompleteStyleDeclaration(loc.lineIndex, loc.charIndex) : - this._getStyleDeclaration(loc.lineIndex, loc.charIndex); - return style || {}; - }, - - /** - * Sets style of a current selection, if no selection exist, do not set anything. - * @param {Object} [styles] Styles object - * @param {Number} [startIndex] Start index to get styles at - * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1 - * @return {fabric.IText} thisArg - * @chainable - */ - setSelectionStyles: function(styles, startIndex, endIndex) { - if (typeof startIndex === 'undefined') { - startIndex = this.selectionStart || 0; - } - if (typeof endIndex === 'undefined') { - endIndex = this.selectionEnd || startIndex; - } - for (var i = startIndex; i < endIndex; i++) { - this._extendStyles(i, styles); - } - /* not included in _extendStyles to avoid clearing cache more than once */ - this._forceClearCache = true; - return this; - }, - - /** - * get the reference, not a clone, of the style object for a given character - * @param {Number} lineIndex - * @param {Number} charIndex - * @return {Object} style object - */ - _getStyleDeclaration: function(lineIndex, charIndex) { - var lineStyle = this.styles && this.styles[lineIndex]; - if (!lineStyle) { - return null; - } - return lineStyle[charIndex]; - }, - - /** - * return a new object that contains all the style property for a character - * the object returned is newly created - * @param {Number} lineIndex of the line where the character is - * @param {Number} charIndex position of the character on the line - * @return {Object} style object - */ - getCompleteStyleDeclaration: function(lineIndex, charIndex) { - var style = this._getStyleDeclaration(lineIndex, charIndex) || { }, - styleObject = { }, prop; - for (var i = 0; i < this._styleProperties.length; i++) { - prop = this._styleProperties[i]; - styleObject[prop] = typeof style[prop] === 'undefined' ? this[prop] : style[prop]; - } - return styleObject; - }, - - /** - * @param {Number} lineIndex - * @param {Number} charIndex - * @param {Object} style - * @private - */ - _setStyleDeclaration: function(lineIndex, charIndex, style) { - this.styles[lineIndex][charIndex] = style; - }, - - /** - * - * @param {Number} lineIndex - * @param {Number} charIndex - * @private - */ - _deleteStyleDeclaration: function(lineIndex, charIndex) { - delete this.styles[lineIndex][charIndex]; - }, - - /** - * @param {Number} lineIndex - * @return {Boolean} if the line exists or not - * @private - */ - _getLineStyle: function(lineIndex) { - return !!this.styles[lineIndex]; - }, - - /** - * Set the line style to an empty object so that is initialized - * @param {Number} lineIndex - * @private - */ - _setLineStyle: function(lineIndex) { - this.styles[lineIndex] = {}; - }, - - /** - * @param {Number} lineIndex - * @private - */ - _deleteLineStyle: function(lineIndex) { - delete this.styles[lineIndex]; - } - }); -})(); - - -(function() { - - function parseDecoration(object) { - if (object.textDecoration) { - object.textDecoration.indexOf('underline') > -1 && (object.underline = true); - object.textDecoration.indexOf('line-through') > -1 && (object.linethrough = true); - object.textDecoration.indexOf('overline') > -1 && (object.overline = true); - delete object.textDecoration; - } - } - - /** - * IText class (introduced in v1.4) Events are also fired with "text:" - * prefix when observing canvas. - * @class fabric.IText - * @extends fabric.Text - * @mixes fabric.Observable - * - * @fires changed - * @fires selection:changed - * @fires editing:entered - * @fires editing:exited - * - * @return {fabric.IText} thisArg - * @see {@link fabric.IText#initialize} for constructor definition - * - *

Supported key combinations:

- * 
-   *   Move cursor:                    left, right, up, down
-   *   Select character:               shift + left, shift + right
-   *   Select text vertically:         shift + up, shift + down
-   *   Move cursor by word:            alt + left, alt + right
-   *   Select words:                   shift + alt + left, shift + alt + right
-   *   Move cursor to line start/end:  cmd + left, cmd + right or home, end
-   *   Select till start/end of line:  cmd + shift + left, cmd + shift + right or shift + home, shift + end
-   *   Jump to start/end of text:      cmd + up, cmd + down
-   *   Select till start/end of text:  cmd + shift + up, cmd + shift + down or shift + pgUp, shift + pgDown
-   *   Delete character:               backspace
-   *   Delete word:                    alt + backspace
-   *   Delete line:                    cmd + backspace
-   *   Forward delete:                 delete
-   *   Copy text:                      ctrl/cmd + c
-   *   Paste text:                     ctrl/cmd + v
-   *   Cut text:                       ctrl/cmd + x
-   *   Select entire text:             ctrl/cmd + a
-   *   Quit editing                    tab or esc
-   *
- * - *

Supported mouse/touch combination

- * 
-   *   Position cursor:                click/touch
-   *   Create selection:               click/touch & drag
-   *   Create selection:               click & shift + click
-   *   Select word:                    double click
-   *   Select line:                    triple click
-   *
- */ - fabric.IText = fabric.util.createClass(fabric.Text, fabric.Observable, /** @lends fabric.IText.prototype */ { - - /** - * Type of an object - * @type String - * @default - */ - type: 'i-text', - - /** - * Index where text selection starts (or where cursor is when there is no selection) - * @type Number - * @default - */ - selectionStart: 0, - - /** - * Index where text selection ends - * @type Number - * @default - */ - selectionEnd: 0, - - /** - * Color of text selection - * @type String - * @default - */ - selectionColor: 'rgba(17,119,255,0.3)', - - /** - * Indicates whether text is in editing mode - * @type Boolean - * @default - */ - isEditing: false, - - /** - * Indicates whether a text can be edited - * @type Boolean - * @default - */ - editable: true, - - /** - * Border color of text object while it's in editing mode - * @type String - * @default - */ - editingBorderColor: 'rgba(102,153,255,0.25)', - - /** - * Width of cursor (in px) - * @type Number - * @default - */ - cursorWidth: 2, - - /** - * Color of text cursor color in editing mode. - * if not set (default) will take color from the text. - * if set to a color value that fabric can understand, it will - * be used instead of the color of the text at the current position. - * @type String - * @default - */ - cursorColor: '', - - /** - * Delay between cursor blink (in ms) - * @type Number - * @default - */ - cursorDelay: 1000, - - /** - * Duration of cursor fadein (in ms) - * @type Number - * @default - */ - cursorDuration: 600, - - /** - * Indicates whether internal text char widths can be cached - * @type Boolean - * @default - */ - caching: true, - - /** - * DOM container to append the hiddenTextarea. - * An alternative to attaching to the document.body. - * Useful to reduce laggish redraw of the full document.body tree and - * also with modals event capturing that won't let the textarea take focus. - * @type HTMLElement - * @default - */ - hiddenTextareaContainer: null, - - /** - * @private - */ - _reSpace: /\s|\n/, - - /** - * @private - */ - _currentCursorOpacity: 0, - - /** - * @private - */ - _selectionDirection: null, - - /** - * @private - */ - _abortCursorAnimation: false, - - /** - * @private - */ - __widthOfSpace: [], - - /** - * Helps determining when the text is in composition, so that the cursor - * rendering is altered. - */ - inCompositionMode: false, - - /** - * Constructor - * @param {String} text Text string - * @param {Object} [options] Options object - * @return {fabric.IText} thisArg - */ - initialize: function(text, options) { - this.callSuper('initialize', text, options); - this.initBehavior(); - }, - - /** - * Sets selection start (left boundary of a selection) - * @param {Number} index Index to set selection start to - */ - setSelectionStart: function(index) { - index = Math.max(index, 0); - this._updateAndFire('selectionStart', index); - }, - - /** - * Sets selection end (right boundary of a selection) - * @param {Number} index Index to set selection end to - */ - setSelectionEnd: function(index) { - index = Math.min(index, this.text.length); - this._updateAndFire('selectionEnd', index); - }, - - /** - * @private - * @param {String} property 'selectionStart' or 'selectionEnd' - * @param {Number} index new position of property - */ - _updateAndFire: function(property, index) { - if (this[property] !== index) { - this._fireSelectionChanged(); - this[property] = index; - } - this._updateTextarea(); - }, - - /** - * Fires the even of selection changed - * @private - */ - _fireSelectionChanged: function() { - this.fire('selection:changed'); - this.canvas && this.canvas.fire('text:selection:changed', { target: this }); - }, - - /** - * Initialize text dimensions. Render all text on given context - * or on a offscreen canvas to get the text width with measureText. - * Updates this.width and this.height with the proper values. - * Does not return dimensions. - * @private - */ - initDimensions: function() { - this.isEditing && this.initDelayedCursor(); - this.clearContextTop(); - this.callSuper('initDimensions'); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - render: function(ctx) { - this.clearContextTop(); - this.callSuper('render', ctx); - // clear the cursorOffsetCache, so we ensure to calculate once per renderCursor - // the correct position but not at every cursor animation. - this.cursorOffsetCache = { }; - this.renderCursorOrSelection(); - }, - - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function(ctx) { - this.callSuper('_render', ctx); - }, - - /** - * Prepare and clean the contextTop - */ - clearContextTop: function(skipRestore) { - if (!this.isEditing || !this.canvas || !this.canvas.contextTop) { - return; - } - var ctx = this.canvas.contextTop, v = this.canvas.viewportTransform; - ctx.save(); - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - this.transform(ctx); - this._clearTextArea(ctx); - skipRestore || ctx.restore(); - }, - /** - * Renders cursor or selection (depending on what exists) - * it does on the contextTop. If contextTop is not available, do nothing. - */ - renderCursorOrSelection: function() { - if (!this.isEditing || !this.canvas || !this.canvas.contextTop) { - return; - } - var boundaries = this._getCursorBoundaries(), - ctx = this.canvas.contextTop; - this.clearContextTop(true); - if (this.selectionStart === this.selectionEnd) { - this.renderCursor(boundaries, ctx); - } - else { - this.renderSelection(boundaries, ctx); - } - ctx.restore(); - }, - - _clearTextArea: function(ctx) { - // we add 4 pixel, to be sure to do not leave any pixel out - var width = this.width + 4, height = this.height + 4; - ctx.clearRect(-width / 2, -height / 2, width, height); - }, - - /** - * Returns cursor boundaries (left, top, leftOffset, topOffset) - * @private - * @param {Array} chars Array of characters - * @param {String} typeOfBoundaries - */ - _getCursorBoundaries: function(position) { - - // left/top are left/top of entire text box - // leftOffset/topOffset are offset from that left/top point of a text box - - if (typeof position === 'undefined') { - position = this.selectionStart; - } - - var left = this._getLeftOffset(), - top = this._getTopOffset(), - offsets = this._getCursorBoundariesOffsets(position); - return { - left: left, - top: top, - leftOffset: offsets.left, - topOffset: offsets.top - }; - }, - - /** - * @private - */ - _getCursorBoundariesOffsets: function(position) { - if (this.cursorOffsetCache && 'top' in this.cursorOffsetCache) { - return this.cursorOffsetCache; - } - var lineLeftOffset, - lineIndex, - charIndex, - topOffset = 0, - leftOffset = 0, - boundaries, - cursorPosition = this.get2DCursorLocation(position); - charIndex = cursorPosition.charIndex; - lineIndex = cursorPosition.lineIndex; - for (var i = 0; i < lineIndex; i++) { - topOffset += this.getHeightOfLine(i); - } - lineLeftOffset = this._getLineLeftOffset(lineIndex); - var bound = this.__charBounds[lineIndex][charIndex]; - bound && (leftOffset = bound.left); - if (this.charSpacing !== 0 && charIndex === this._textLines[lineIndex].length) { - leftOffset -= this._getWidthOfCharSpacing(); - } - boundaries = { - top: topOffset, - left: lineLeftOffset + (leftOffset > 0 ? leftOffset : 0), - }; - if (this.direction === 'rtl') { - boundaries.left *= -1; - } - this.cursorOffsetCache = boundaries; - return this.cursorOffsetCache; - }, - - /** - * Renders cursor - * @param {Object} boundaries - * @param {CanvasRenderingContext2D} ctx transformed context to draw on - */ - renderCursor: function(boundaries, ctx) { - var cursorLocation = this.get2DCursorLocation(), - lineIndex = cursorLocation.lineIndex, - charIndex = cursorLocation.charIndex > 0 ? cursorLocation.charIndex - 1 : 0, - charHeight = this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize'), - multiplier = this.scaleX * this.canvas.getZoom(), - cursorWidth = this.cursorWidth / multiplier, - topOffset = boundaries.topOffset, - dy = this.getValueOfPropertyAt(lineIndex, charIndex, 'deltaY'); - topOffset += (1 - this._fontSizeFraction) * this.getHeightOfLine(lineIndex) / this.lineHeight - - charHeight * (1 - this._fontSizeFraction); - - if (this.inCompositionMode) { - this.renderSelection(boundaries, ctx); - } - ctx.fillStyle = this.cursorColor || this.getValueOfPropertyAt(lineIndex, charIndex, 'fill'); - ctx.globalAlpha = this.__isMousedown ? 1 : this._currentCursorOpacity; - ctx.fillRect( - boundaries.left + boundaries.leftOffset - cursorWidth / 2, - topOffset + boundaries.top + dy, - cursorWidth, - charHeight); - }, - - /** - * Renders text selection - * @param {Object} boundaries Object with left/top/leftOffset/topOffset - * @param {CanvasRenderingContext2D} ctx transformed context to draw on - */ - renderSelection: function(boundaries, ctx) { - - var selectionStart = this.inCompositionMode ? this.hiddenTextarea.selectionStart : this.selectionStart, - selectionEnd = this.inCompositionMode ? this.hiddenTextarea.selectionEnd : this.selectionEnd, - isJustify = this.textAlign.indexOf('justify') !== -1, - start = this.get2DCursorLocation(selectionStart), - end = this.get2DCursorLocation(selectionEnd), - startLine = start.lineIndex, - endLine = end.lineIndex, - startChar = start.charIndex < 0 ? 0 : start.charIndex, - endChar = end.charIndex < 0 ? 0 : end.charIndex; - - for (var i = startLine; i <= endLine; i++) { - var lineOffset = this._getLineLeftOffset(i) || 0, - lineHeight = this.getHeightOfLine(i), - realLineHeight = 0, boxStart = 0, boxEnd = 0; - - if (i === startLine) { - boxStart = this.__charBounds[startLine][startChar].left; - } - if (i >= startLine && i < endLine) { - boxEnd = isJustify && !this.isEndOfWrapping(i) ? this.width : this.getLineWidth(i) || 5; // WTF is this 5? - } - else if (i === endLine) { - if (endChar === 0) { - boxEnd = this.__charBounds[endLine][endChar].left; - } - else { - var charSpacing = this._getWidthOfCharSpacing(); - boxEnd = this.__charBounds[endLine][endChar - 1].left - + this.__charBounds[endLine][endChar - 1].width - charSpacing; - } - } - realLineHeight = lineHeight; - if (this.lineHeight < 1 || (i === endLine && this.lineHeight > 1)) { - lineHeight /= this.lineHeight; - } - var drawStart = boundaries.left + lineOffset + boxStart, - drawWidth = boxEnd - boxStart, - drawHeight = lineHeight, extraTop = 0; - if (this.inCompositionMode) { - ctx.fillStyle = this.compositionColor || 'black'; - drawHeight = 1; - extraTop = lineHeight; - } - else { - ctx.fillStyle = this.selectionColor; - } - if (this.direction === 'rtl') { - drawStart = this.width - drawStart - drawWidth; - } - ctx.fillRect( - drawStart, - boundaries.top + boundaries.topOffset + extraTop, - drawWidth, - drawHeight); - boundaries.topOffset += realLineHeight; - } - }, - - /** - * High level function to know the height of the cursor. - * the currentChar is the one that precedes the cursor - * Returns fontSize of char at the current cursor - * Unused from the library, is for the end user - * @return {Number} Character font size - */ - getCurrentCharFontSize: function() { - var cp = this._getCurrentCharIndex(); - return this.getValueOfPropertyAt(cp.l, cp.c, 'fontSize'); - }, - - /** - * High level function to know the color of the cursor. - * the currentChar is the one that precedes the cursor - * Returns color (fill) of char at the current cursor - * if the text object has a pattern or gradient for filler, it will return that. - * Unused by the library, is for the end user - * @return {String | fabric.Gradient | fabric.Pattern} Character color (fill) - */ - getCurrentCharColor: function() { - var cp = this._getCurrentCharIndex(); - return this.getValueOfPropertyAt(cp.l, cp.c, 'fill'); - }, - - /** - * Returns the cursor position for the getCurrent.. functions - * @private - */ - _getCurrentCharIndex: function() { - var cursorPosition = this.get2DCursorLocation(this.selectionStart, true), - charIndex = cursorPosition.charIndex > 0 ? cursorPosition.charIndex - 1 : 0; - return { l: cursorPosition.lineIndex, c: charIndex }; - } - }); - - /** - * Returns fabric.IText instance from an object representation - * @static - * @memberOf fabric.IText - * @param {Object} object Object to create an instance from - * @param {function} [callback] invoked with new instance as argument - */ - fabric.IText.fromObject = function(object, callback) { - parseDecoration(object); - if (object.styles) { - for (var i in object.styles) { - for (var j in object.styles[i]) { - parseDecoration(object.styles[i][j]); - } - } - } - fabric.Object._fromObject('IText', object, callback, 'text'); - }; -})(); - - -(function() { - - var clone = fabric.util.object.clone; - - fabric.util.object.extend(fabric.IText.prototype, /** @lends fabric.IText.prototype */ { - - /** - * Initializes all the interactive behavior of IText - */ - initBehavior: function() { - this.initAddedHandler(); - this.initRemovedHandler(); - this.initCursorSelectionHandlers(); - this.initDoubleClickSimulation(); - this.mouseMoveHandler = this.mouseMoveHandler.bind(this); - }, - - onDeselect: function() { - this.isEditing && this.exitEditing(); - this.selected = false; - }, - - /** - * Initializes "added" event handler - */ - initAddedHandler: function() { - var _this = this; - this.on('added', function() { - var canvas = _this.canvas; - if (canvas) { - if (!canvas._hasITextHandlers) { - canvas._hasITextHandlers = true; - _this._initCanvasHandlers(canvas); - } - canvas._iTextInstances = canvas._iTextInstances || []; - canvas._iTextInstances.push(_this); - } - }); - }, - - initRemovedHandler: function() { - var _this = this; - this.on('removed', function() { - var canvas = _this.canvas; - if (canvas) { - canvas._iTextInstances = canvas._iTextInstances || []; - fabric.util.removeFromArray(canvas._iTextInstances, _this); - if (canvas._iTextInstances.length === 0) { - canvas._hasITextHandlers = false; - _this._removeCanvasHandlers(canvas); - } - } - }); - }, - - /** - * register canvas event to manage exiting on other instances - * @private - */ - _initCanvasHandlers: function(canvas) { - canvas._mouseUpITextHandler = function() { - if (canvas._iTextInstances) { - canvas._iTextInstances.forEach(function(obj) { - obj.__isMousedown = false; - }); - } - }; - canvas.on('mouse:up', canvas._mouseUpITextHandler); - }, - - /** - * remove canvas event to manage exiting on other instances - * @private - */ - _removeCanvasHandlers: function(canvas) { - canvas.off('mouse:up', canvas._mouseUpITextHandler); - }, - - /** - * @private - */ - _tick: function() { - this._currentTickState = this._animateCursor(this, 1, this.cursorDuration, '_onTickComplete'); - }, - - /** - * @private - */ - _animateCursor: function(obj, targetOpacity, duration, completeMethod) { - - var tickState; - - tickState = { - isAborted: false, - abort: function() { - this.isAborted = true; + }; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +// extend this regex to support non english languages +const reNonWord = /[ \n\.,;!\?\-]/; +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.IText.prototype, + /** @lends fabric.IText.prototype */ { + /** + * Initializes all the interactive behavior of IText + */ + initBehavior: function () { + this.initAddedHandler(); + this.initRemovedHandler(); + this.initCursorSelectionHandlers(); + this.initDoubleClickSimulation(); + this.mouseMoveHandler = this.mouseMoveHandler.bind(this); + this.dragEnterHandler = this.dragEnterHandler.bind(this); + this.dragOverHandler = this.dragOverHandler.bind(this); + this.dragLeaveHandler = this.dragLeaveHandler.bind(this); + this.dragEndHandler = this.dragEndHandler.bind(this); + this.dropHandler = this.dropHandler.bind(this); + this.on('dragenter', this.dragEnterHandler); + this.on('dragover', this.dragOverHandler); + this.on('dragleave', this.dragLeaveHandler); + this.on('dragend', this.dragEndHandler); + this.on('drop', this.dropHandler); + }, + onDeselect: function () { + this.isEditing && this.exitEditing(); + this.selected = false; + }, + /** + * Initializes "added" event handler + */ + initAddedHandler: function () { + var _this = this; + this.on('added', function (opt) { + // make sure we listen to the canvas added event + var canvas = opt.target; + if (canvas) { + if (!canvas._hasITextHandlers) { + canvas._hasITextHandlers = true; + _this._initCanvasHandlers(canvas); + } + canvas._iTextInstances = canvas._iTextInstances || []; + canvas._iTextInstances.push(_this); + } + }); + }, + initRemovedHandler: function () { + var _this = this; + this.on('removed', function (opt) { + // make sure we listen to the canvas removed event + var canvas = opt.target; + if (canvas) { + canvas._iTextInstances = canvas._iTextInstances || []; + removeFromArray(canvas._iTextInstances, _this); + if (canvas._iTextInstances.length === 0) { + canvas._hasITextHandlers = false; + _this._removeCanvasHandlers(canvas); + } + } + }); + }, + /** + * register canvas event to manage exiting on other instances + * @private + */ + _initCanvasHandlers: function (canvas) { + canvas._mouseUpITextHandler = function () { + if (canvas._iTextInstances) { + canvas._iTextInstances.forEach(function (obj) { + obj.__isMousedown = false; + }); + } + }; + canvas.on('mouse:up', canvas._mouseUpITextHandler); + }, + /** + * remove canvas event to manage exiting on other instances + * @private + */ + _removeCanvasHandlers: function (canvas) { + canvas.off('mouse:up', canvas._mouseUpITextHandler); + }, + /** + * @private + */ + _tick: function () { + this._currentTickState = this._animateCursor(this, 1, this.cursorDuration, '_onTickComplete'); + }, + /** + * @private + */ + _animateCursor: function (obj, targetOpacity, duration, completeMethod) { + var tickState = { + isAborted: false, + abort: function () { + this.isAborted = true; + }, + }; + obj.animate('_currentCursorOpacity', targetOpacity, { + duration: duration, + onComplete: function () { + if (!tickState.isAborted) { + obj[completeMethod](); + } + }, + onChange: function () { + // we do not want to animate a selection, only cursor + if (obj.canvas && obj.selectionStart === obj.selectionEnd) { + obj.renderCursorOrSelection(); + } + }, + abort: function () { + return tickState.isAborted; + }, + }); + return tickState; + }, + /** + * @private + */ + _onTickComplete: function () { + var _this = this; + if (this._cursorTimeout1) { + clearTimeout(this._cursorTimeout1); + } + this._cursorTimeout1 = setTimeout(function () { + _this._currentTickCompleteState = _this._animateCursor(_this, 0, this.cursorDuration / 2, '_tick'); + }, 100); + }, + /** + * Initializes delayed cursor + */ + initDelayedCursor: function (restart) { + var _this = this, delay = restart ? 0 : this.cursorDelay; + this.abortCursorAnimation(); + if (delay) { + this._cursorTimeout2 = setTimeout(function () { + _this._tick(); + }, delay); + } + else { + this._tick(); + } + }, + /** + * Aborts cursor animation, clears all timeouts and clear textarea context if necessary + */ + abortCursorAnimation: function () { + var shouldClear = this._currentTickState || this._currentTickCompleteState; + this._currentTickState && this._currentTickState.abort(); + this._currentTickCompleteState && + this._currentTickCompleteState.abort(); + clearTimeout(this._cursorTimeout1); + clearTimeout(this._cursorTimeout2); + this._currentCursorOpacity = 1; + // make sure we clear context even if instance is not editing + if (shouldClear) { + this.clearContextTop(); + } + }, + /** + * Selects entire text + * @return {fabric.IText} thisArg + * @chainable + */ + selectAll: function () { + this.selectionStart = 0; + this.selectionEnd = this._text.length; + this._fireSelectionChanged(); + this._updateTextarea(); + return this; + }, + /** + * Returns selected text + * @return {String} + */ + getSelectedText: function () { + return this._text + .slice(this.selectionStart, this.selectionEnd) + .join(''); + }, + /** + * Find new selection index representing start of current word according to current selection index + * @param {Number} startFrom Current selection index + * @return {Number} New selection index + */ + findWordBoundaryLeft: function (startFrom) { + var offset = 0, index = startFrom - 1; + // remove space before cursor first + if (this._reSpace.test(this._text[index])) { + while (this._reSpace.test(this._text[index])) { + offset++; + index--; + } + } + while (/\S/.test(this._text[index]) && index > -1) { + offset++; + index--; + } + return startFrom - offset; + }, + /** + * Find new selection index representing end of current word according to current selection index + * @param {Number} startFrom Current selection index + * @return {Number} New selection index + */ + findWordBoundaryRight: function (startFrom) { + var offset = 0, index = startFrom; + // remove space after cursor first + if (this._reSpace.test(this._text[index])) { + while (this._reSpace.test(this._text[index])) { + offset++; + index++; + } + } + while (/\S/.test(this._text[index]) && index < this._text.length) { + offset++; + index++; + } + return startFrom + offset; + }, + /** + * Find new selection index representing start of current line according to current selection index + * @param {Number} startFrom Current selection index + * @return {Number} New selection index + */ + findLineBoundaryLeft: function (startFrom) { + var offset = 0, index = startFrom - 1; + while (!/\n/.test(this._text[index]) && index > -1) { + offset++; + index--; + } + return startFrom - offset; + }, + /** + * Find new selection index representing end of current line according to current selection index + * @param {Number} startFrom Current selection index + * @return {Number} New selection index + */ + findLineBoundaryRight: function (startFrom) { + var offset = 0, index = startFrom; + while (!/\n/.test(this._text[index]) && index < this._text.length) { + offset++; + index++; + } + return startFrom + offset; + }, + /** + * Finds index corresponding to beginning or end of a word + * @param {Number} selectionStart Index of a character + * @param {Number} direction 1 or -1 + * @return {Number} Index of the beginning or end of a word + */ + searchWordBoundary: function (selectionStart, direction) { + var text = this._text, index = this._reSpace.test(text[selectionStart]) + ? selectionStart - 1 + : selectionStart, _char = text[index]; + while (!reNonWord.test(_char) && index > 0 && index < text.length) { + index += direction; + _char = text[index]; + } + if (reNonWord.test(_char)) { + index += direction === 1 ? 0 : 1; + } + return index; + }, + /** + * Selects a word based on the index + * @param {Number} selectionStart Index of a character + */ + selectWord: function (selectionStart) { + selectionStart = selectionStart || this.selectionStart; + var newSelectionStart = this.searchWordBoundary(selectionStart, -1) /* search backwards */, newSelectionEnd = this.searchWordBoundary(selectionStart, 1); /* search forward */ + this.selectionStart = newSelectionStart; + this.selectionEnd = newSelectionEnd; + this._fireSelectionChanged(); + this._updateTextarea(); + this.renderCursorOrSelection(); + }, + /** + * Selects a line based on the index + * @param {Number} selectionStart Index of a character + * @return {fabric.IText} thisArg + * @chainable + */ + selectLine: function (selectionStart) { + selectionStart = selectionStart || this.selectionStart; + var newSelectionStart = this.findLineBoundaryLeft(selectionStart), newSelectionEnd = this.findLineBoundaryRight(selectionStart); + this.selectionStart = newSelectionStart; + this.selectionEnd = newSelectionEnd; + this._fireSelectionChanged(); + this._updateTextarea(); + return this; + }, + /** + * Enters editing state + * @return {fabric.IText} thisArg + * @chainable + */ + enterEditing: function (e) { + if (this.isEditing || !this.editable) { + return; + } + if (this.canvas) { + this.canvas.calcOffset(); + this.exitEditingOnOthers(this.canvas); + } + this.isEditing = true; + this.initHiddenTextarea(e); + this.hiddenTextarea.focus(); + this.hiddenTextarea.value = this.text; + this._updateTextarea(); + this._saveEditingProps(); + this._setEditingProps(); + this._textBeforeEdit = this.text; + this._tick(); + this.fire('editing:entered'); + this._fireSelectionChanged(); + if (!this.canvas) { + return this; + } + this.canvas.fire('text:editing:entered', { target: this }); + this.initMouseMoveHandler(); + this.canvas.requestRenderAll(); + return this; + }, + exitEditingOnOthers: function (canvas) { + if (canvas._iTextInstances) { + canvas._iTextInstances.forEach(function (obj) { + obj.selected = false; + if (obj.isEditing) { + obj.exitEditing(); + } + }); + } + }, + /** + * Initializes "mousemove" event handler + */ + initMouseMoveHandler: function () { + this.canvas.on('mouse:move', this.mouseMoveHandler); + }, + /** + * @private + */ + mouseMoveHandler: function (options) { + if (!this.__isMousedown || !this.isEditing) { + return; + } + // regain focus + fabric.document.activeElement !== this.hiddenTextarea && + this.hiddenTextarea.focus(); + var newSelectionStart = this.getSelectionStartFromPointer(options.e), currentStart = this.selectionStart, currentEnd = this.selectionEnd; + if ((newSelectionStart !== this.__selectionStartOnMouseDown || + currentStart === currentEnd) && + (currentStart === newSelectionStart || + currentEnd === newSelectionStart)) { + return; + } + if (newSelectionStart > this.__selectionStartOnMouseDown) { + this.selectionStart = this.__selectionStartOnMouseDown; + this.selectionEnd = newSelectionStart; + } + else { + this.selectionStart = newSelectionStart; + this.selectionEnd = this.__selectionStartOnMouseDown; + } + if (this.selectionStart !== currentStart || + this.selectionEnd !== currentEnd) { + this.restartCursorIfNeeded(); + this._fireSelectionChanged(); + this._updateTextarea(); + this.renderCursorOrSelection(); + } + }, + /** + * Override to customize the drag image + * https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer/setDragImage + * @param {DragEvent} e + * @param {object} data + * @param {number} data.selectionStart + * @param {number} data.selectionEnd + * @param {string} data.text + * @param {string} data.value selected text + */ + setDragImage: function (e, data) { + var t = this.calcTransformMatrix(); + var flipFactor = new Point(this.flipX ? -1 : 1, this.flipY ? -1 : 1); + var boundaries = this._getCursorBoundaries(data.selectionStart); + var selectionPosition = new Point(boundaries.left + boundaries.leftOffset, boundaries.top + boundaries.topOffset).multiply(flipFactor); + var pos = fabric.util.transformPoint(selectionPosition, t); + var pointer = this.canvas.getPointer(e); + var diff = pointer.subtract(pos); + var enableRetinaScaling = this.canvas._isRetinaScaling(); + var retinaScaling = this.canvas.getRetinaScaling(); + var bbox = this.getBoundingRect(true); + var correction = pos.subtract(new Point(bbox.left, bbox.top)); + var offset = correction.add(diff).scalarMultiply(retinaScaling); + // prepare instance for drag image snapshot by making all non selected text invisible + var bgc = this.backgroundColor; + var styles = fabric.util.object.clone(this.styles, true); + delete this.backgroundColor; + var styleOverride = { + fill: 'transparent', + textBackgroundColor: 'transparent', + }; + this.setSelectionStyles(styleOverride, 0, data.selectionStart); + this.setSelectionStyles(styleOverride, data.selectionEnd, data.text.length); + var dragImage = this.toCanvasElement({ + enableRetinaScaling: enableRetinaScaling, + }); + this.backgroundColor = bgc; + this.styles = styles; + // handle retina scaling + if (enableRetinaScaling && retinaScaling > 1) { + var c = fabric.util.createCanvasElement(); + c.width = dragImage.width / retinaScaling; + c.height = dragImage.height / retinaScaling; + var ctx = c.getContext('2d'); + ctx.scale(1 / retinaScaling, 1 / retinaScaling); + ctx.drawImage(dragImage, 0, 0); + dragImage = c; + } + this.__dragImageDisposer && this.__dragImageDisposer(); + this.__dragImageDisposer = function () { + dragImage.remove(); + }; + // position drag image offsecreen + fabric.util.setStyle(dragImage, { + position: 'absolute', + left: -dragImage.width + 'px', + border: 'none', + }); + fabric.document.body.appendChild(dragImage); + e.dataTransfer.setDragImage(dragImage, offset.x, offset.y); + }, + /** + * support native like text dragging + * @private + * @param {DragEvent} e + * @returns {boolean} should handle event + */ + onDragStart: function (e) { + this.__dragStartFired = true; + if (this.__isDragging) { + var selection = (this.__dragStartSelection = { + selectionStart: this.selectionStart, + selectionEnd: this.selectionEnd, + }); + var value = this._text + .slice(selection.selectionStart, selection.selectionEnd) + .join(''); + var data = Object.assign({ text: this.text, value: value }, selection); + e.dataTransfer.setData('text/plain', value); + e.dataTransfer.setData('application/fabric', JSON.stringify({ + value: value, + styles: this.getSelectionStyles(selection.selectionStart, selection.selectionEnd, true), + })); + e.dataTransfer.effectAllowed = 'copyMove'; + this.setDragImage(e, data); + } + this.abortCursorAnimation(); + return this.__isDragging; + }, + /** + * Override to customize drag and drop behavior + * @public + * @param {DragEvent} e + * @returns {boolean} + */ + canDrop: function (e) { + if (this.editable && !this.__corner) { + if (this.__isDragging && this.__dragStartSelection) { + // drag source trying to drop over itself + // allow dropping only outside of drag start selection + var index = this.getSelectionStartFromPointer(e); + var dragStartSelection = this.__dragStartSelection; + return (index < dragStartSelection.selectionStart || + index > dragStartSelection.selectionEnd); + } + return true; + } + return false; + }, + /** + * support native like text dragging + * @private + * @param {object} options + * @param {DragEvent} options.e + */ + dragEnterHandler: function (options) { + var e = options.e; + var canDrop = !e.defaultPrevented && this.canDrop(e); + if (!this.__isDraggingOver && canDrop) { + this.__isDraggingOver = true; + } + }, + /** + * support native like text dragging + * @private + * @param {object} options + * @param {DragEvent} options.e + */ + dragOverHandler: function (options) { + var e = options.e; + var canDrop = !e.defaultPrevented && this.canDrop(e); + if (!this.__isDraggingOver && canDrop) { + this.__isDraggingOver = true; + } + else if (this.__isDraggingOver && !canDrop) { + // drop state has changed + this.__isDraggingOver = false; + } + if (this.__isDraggingOver) { + // can be dropped, inform browser + e.preventDefault(); + // inform event subscribers + options.canDrop = true; + options.dropTarget = this; + // find cursor under the drag part. + } + }, + /** + * support native like text dragging + * @private + */ + dragLeaveHandler: function () { + if (this.__isDraggingOver || this.__isDragging) { + this.__isDraggingOver = false; + } + }, + /** + * support native like text dragging + * fired only on the drag source + * handle changes to the drag source in case of a drop on another object or a cancellation + * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#finishing_a_drag + * @private + * @param {object} options + * @param {DragEvent} options.e + */ + dragEndHandler: function (options) { + var e = options.e; + if (this.__isDragging && this.__dragStartFired) { + // once the drop event finishes we check if we need to change the drag source + // if the drag source received the drop we bail out + if (this.__dragStartSelection) { + var selectionStart = this.__dragStartSelection.selectionStart; + var selectionEnd = this.__dragStartSelection.selectionEnd; + var dropEffect = e.dataTransfer.dropEffect; + if (dropEffect === 'none') { + this.selectionStart = selectionStart; + this.selectionEnd = selectionEnd; + this._updateTextarea(); + } + else { + this.clearContextTop(); + if (dropEffect === 'move') { + this.insertChars('', null, selectionStart, selectionEnd); + this.selectionStart = this.selectionEnd = selectionStart; + this.hiddenTextarea && (this.hiddenTextarea.value = this.text); + this._updateTextarea(); + this.fire('changed', { + index: selectionStart, + action: 'dragend', + }); + this.canvas.fire('text:changed', { target: this }); + this.canvas.requestRenderAll(); + } + this.exitEditing(); + // disable mouse up logic + this.__lastSelected = false; + } + } + } + this.__dragImageDisposer && this.__dragImageDisposer(); + delete this.__dragImageDisposer; + delete this.__dragStartSelection; + this.__isDraggingOver = false; + }, + /** + * support native like text dragging + * + * Override the `text/plain | application/fabric` types of {@link DragEvent#dataTransfer} + * in order to change the drop value or to customize styling respectively, by listening to the `drop:before` event + * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#performing_a_drop + * @private + * @param {object} options + * @param {DragEvent} options.e + */ + dropHandler: function (options) { + var e = options.e, didDrop = e.defaultPrevented; + this.__isDraggingOver = false; + // inform browser that the drop has been accepted + e.preventDefault(); + var insert = e.dataTransfer.getData('text/plain'); + if (insert && !didDrop) { + var insertAt = this.getSelectionStartFromPointer(e); + var data = e.dataTransfer.types.includes('application/fabric') + ? JSON.parse(e.dataTransfer.getData('application/fabric')) + : {}; + var styles = data.styles; + var trailing = insert[Math.max(0, insert.length - 1)]; + var selectionStartOffset = 0; + // drag and drop in same instance + if (this.__dragStartSelection) { + var selectionStart = this.__dragStartSelection.selectionStart; + var selectionEnd = this.__dragStartSelection.selectionEnd; + if (insertAt > selectionStart && insertAt <= selectionEnd) { + insertAt = selectionStart; + } + else if (insertAt > selectionEnd) { + insertAt -= selectionEnd - selectionStart; + } + this.insertChars('', null, selectionStart, selectionEnd); + // prevent `dragend` from handling event + delete this.__dragStartSelection; + } + // remove redundant line break + if (this._reNewline.test(trailing) && + (this._reNewline.test(this._text[insertAt]) || + insertAt === this._text.length)) { + insert = insert.trimEnd(); + } + // inform subscribers + options.didDrop = true; + options.dropTarget = this; + // finalize + this.insertChars(insert, styles, insertAt); + // can this part be moved in an outside event? andrea to check. + this.canvas.setActiveObject(this); + this.enterEditing(); + this.selectionStart = Math.min(insertAt + selectionStartOffset, this._text.length); + this.selectionEnd = Math.min(this.selectionStart + insert.length, this._text.length); + this.hiddenTextarea && (this.hiddenTextarea.value = this.text); + this._updateTextarea(); + this.fire('changed', { + index: insertAt + selectionStartOffset, + action: 'drop', + }); + this.canvas.fire('text:changed', { target: this }); + this.canvas.contextTopDirty = true; + this.canvas.requestRenderAll(); + } + }, + /** + * @private + */ + _setEditingProps: function () { + this.hoverCursor = 'text'; + if (this.canvas) { + this.canvas.defaultCursor = this.canvas.moveCursor = 'text'; + } + this.borderColor = this.editingBorderColor; + this.hasControls = this.selectable = false; + this.lockMovementX = this.lockMovementY = true; + }, + /** + * convert from textarea to grapheme indexes + */ + fromStringToGraphemeSelection: function (start, end, text) { + var smallerTextStart = text.slice(0, start), graphemeStart = this.graphemeSplit(smallerTextStart).length; + if (start === end) { + return { selectionStart: graphemeStart, selectionEnd: graphemeStart }; + } + var smallerTextEnd = text.slice(start, end), graphemeEnd = this.graphemeSplit(smallerTextEnd).length; + return { + selectionStart: graphemeStart, + selectionEnd: graphemeStart + graphemeEnd, + }; + }, + /** + * convert from fabric to textarea values + */ + fromGraphemeToStringSelection: function (start, end, _text) { + var smallerTextStart = _text.slice(0, start), graphemeStart = smallerTextStart.join('').length; + if (start === end) { + return { selectionStart: graphemeStart, selectionEnd: graphemeStart }; + } + var smallerTextEnd = _text.slice(start, end), graphemeEnd = smallerTextEnd.join('').length; + return { + selectionStart: graphemeStart, + selectionEnd: graphemeStart + graphemeEnd, + }; + }, + /** + * @private + */ + _updateTextarea: function () { + this.cursorOffsetCache = {}; + if (!this.hiddenTextarea) { + return; + } + if (!this.inCompositionMode) { + var newSelection = this.fromGraphemeToStringSelection(this.selectionStart, this.selectionEnd, this._text); + this.hiddenTextarea.selectionStart = newSelection.selectionStart; + this.hiddenTextarea.selectionEnd = newSelection.selectionEnd; + } + this.updateTextareaPosition(); + }, + /** + * @private + */ + updateFromTextArea: function () { + if (!this.hiddenTextarea) { + return; + } + this.cursorOffsetCache = {}; + this.text = this.hiddenTextarea.value; + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + this.setCoords(); + } + var newSelection = this.fromStringToGraphemeSelection(this.hiddenTextarea.selectionStart, this.hiddenTextarea.selectionEnd, this.hiddenTextarea.value); + this.selectionEnd = this.selectionStart = newSelection.selectionEnd; + if (!this.inCompositionMode) { + this.selectionStart = newSelection.selectionStart; + } + this.updateTextareaPosition(); + }, + /** + * @private + */ + updateTextareaPosition: function () { + if (this.selectionStart === this.selectionEnd) { + var style = this._calcTextareaPosition(); + this.hiddenTextarea.style.left = style.left; + this.hiddenTextarea.style.top = style.top; + } + }, + /** + * @private + * @return {Object} style contains style for hiddenTextarea + */ + _calcTextareaPosition: function () { + if (!this.canvas) { + return { x: 1, y: 1 }; + } + var desiredPosition = this.inCompositionMode + ? this.compositionStart + : this.selectionStart, boundaries = this._getCursorBoundaries(desiredPosition), cursorLocation = this.get2DCursorLocation(desiredPosition), lineIndex = cursorLocation.lineIndex, charIndex = cursorLocation.charIndex, charHeight = this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize') * + this.lineHeight, leftOffset = boundaries.leftOffset, m = this.calcTransformMatrix(), p = { + x: boundaries.left + leftOffset, + y: boundaries.top + boundaries.topOffset + charHeight, + }, retinaScaling = this.canvas.getRetinaScaling(), upperCanvas = this.canvas.upperCanvasEl, upperCanvasWidth = upperCanvas.width / retinaScaling, upperCanvasHeight = upperCanvas.height / retinaScaling, maxWidth = upperCanvasWidth - charHeight, maxHeight = upperCanvasHeight - charHeight, scaleX = upperCanvas.clientWidth / upperCanvasWidth, scaleY = upperCanvas.clientHeight / upperCanvasHeight; + p = fabric.util.transformPoint(p, m); + p = fabric.util.transformPoint(p, this.canvas.viewportTransform); + p.x *= scaleX; + p.y *= scaleY; + if (p.x < 0) { + p.x = 0; + } + if (p.x > maxWidth) { + p.x = maxWidth; + } + if (p.y < 0) { + p.y = 0; + } + if (p.y > maxHeight) { + p.y = maxHeight; + } + // add canvas offset on document + p.x += this.canvas._offset.left; + p.y += this.canvas._offset.top; + return { + left: p.x + 'px', + top: p.y + 'px', + fontSize: charHeight + 'px', + charHeight: charHeight, + }; + }, + /** + * @private + */ + _saveEditingProps: function () { + this._savedProps = { + hasControls: this.hasControls, + borderColor: this.borderColor, + lockMovementX: this.lockMovementX, + lockMovementY: this.lockMovementY, + hoverCursor: this.hoverCursor, + selectable: this.selectable, + defaultCursor: this.canvas && this.canvas.defaultCursor, + moveCursor: this.canvas && this.canvas.moveCursor, + }; + }, + /** + * @private + */ + _restoreEditingProps: function () { + if (!this._savedProps) { + return; + } + this.hoverCursor = this._savedProps.hoverCursor; + this.hasControls = this._savedProps.hasControls; + this.borderColor = this._savedProps.borderColor; + this.selectable = this._savedProps.selectable; + this.lockMovementX = this._savedProps.lockMovementX; + this.lockMovementY = this._savedProps.lockMovementY; + if (this.canvas) { + this.canvas.defaultCursor = this._savedProps.defaultCursor; + this.canvas.moveCursor = this._savedProps.moveCursor; + } + delete this._savedProps; + }, + /** + * Exits from editing state + * @return {fabric.IText} thisArg + * @chainable + */ + exitEditing: function () { + var isTextChanged = this._textBeforeEdit !== this.text; + var hiddenTextarea = this.hiddenTextarea; + this.selected = false; + this.isEditing = false; + this.selectionEnd = this.selectionStart; + if (hiddenTextarea) { + hiddenTextarea.blur && hiddenTextarea.blur(); + hiddenTextarea.parentNode && + hiddenTextarea.parentNode.removeChild(hiddenTextarea); + } + this.hiddenTextarea = null; + this.abortCursorAnimation(); + this._restoreEditingProps(); + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + this.setCoords(); + } + this.fire('editing:exited'); + isTextChanged && this.fire('modified'); + if (this.canvas) { + this.canvas.off('mouse:move', this.mouseMoveHandler); + this.canvas.fire('text:editing:exited', { target: this }); + isTextChanged && + this.canvas.fire('object:modified', { target: this }); + } + return this; + }, + /** + * @private + */ + _removeExtraneousStyles: function () { + for (var prop in this.styles) { + if (!this._textLines[prop]) { + delete this.styles[prop]; + } + } + }, + /** + * remove and reflow a style block from start to end. + * @param {Number} start linear start position for removal (included in removal) + * @param {Number} end linear end position for removal ( excluded from removal ) + */ + removeStyleFromTo: function (start, end) { + var cursorStart = this.get2DCursorLocation(start, true), cursorEnd = this.get2DCursorLocation(end, true), lineStart = cursorStart.lineIndex, charStart = cursorStart.charIndex, lineEnd = cursorEnd.lineIndex, charEnd = cursorEnd.charIndex, i, styleObj; + if (lineStart !== lineEnd) { + // step1 remove the trailing of lineStart + if (this.styles[lineStart]) { + for (i = charStart; i < this._unwrappedTextLines[lineStart].length; i++) { + delete this.styles[lineStart][i]; + } + } + // step2 move the trailing of lineEnd to lineStart if needed + if (this.styles[lineEnd]) { + for (i = charEnd; i < this._unwrappedTextLines[lineEnd].length; i++) { + styleObj = this.styles[lineEnd][i]; + if (styleObj) { + this.styles[lineStart] || (this.styles[lineStart] = {}); + this.styles[lineStart][charStart + i - charEnd] = styleObj; + } + } + } + // step3 detects lines will be completely removed. + for (i = lineStart + 1; i <= lineEnd; i++) { + delete this.styles[i]; + } + // step4 shift remaining lines. + this.shiftLineStyles(lineEnd, lineStart - lineEnd); + } + else { + // remove and shift left on the same line + if (this.styles[lineStart]) { + styleObj = this.styles[lineStart]; + var diff = charEnd - charStart, numericChar, _char; + for (i = charStart; i < charEnd; i++) { + delete styleObj[i]; + } + for (_char in this.styles[lineStart]) { + numericChar = parseInt(_char, 10); + if (numericChar >= charEnd) { + styleObj[numericChar - diff] = styleObj[_char]; + delete styleObj[_char]; + } + } + } + } + }, + /** + * Shifts line styles up or down + * @param {Number} lineIndex Index of a line + * @param {Number} offset Can any number? + */ + shiftLineStyles: function (lineIndex, offset) { + // shift all line styles by offset upward or downward + // do not clone deep. we need new array, not new style objects + var clonedStyles = Object.assign({}, this.styles); + for (var line in this.styles) { + var numericLine = parseInt(line, 10); + if (numericLine > lineIndex) { + this.styles[numericLine + offset] = clonedStyles[numericLine]; + if (!clonedStyles[numericLine - offset]) { + delete this.styles[numericLine]; + } + } + } + }, + restartCursorIfNeeded: function () { + if (!this._currentTickState || + this._currentTickState.isAborted || + !this._currentTickCompleteState || + this._currentTickCompleteState.isAborted) { + this.initDelayedCursor(); + } + }, + /** + * Handle insertion of more consecutive style lines for when one or more + * newlines gets added to the text. Since current style needs to be shifted + * first we shift the current style of the number lines needed, then we add + * new lines from the last to the first. + * @param {Number} lineIndex Index of a line + * @param {Number} charIndex Index of a char + * @param {Number} qty number of lines to add + * @param {Array} copiedStyle Array of objects styles + */ + insertNewlineStyleObject: function (lineIndex, charIndex, qty, copiedStyle) { + var currentCharStyle, newLineStyles = {}, somethingAdded = false, isEndOfLine = this._unwrappedTextLines[lineIndex].length === charIndex; + qty || (qty = 1); + this.shiftLineStyles(lineIndex, qty); + if (this.styles[lineIndex]) { + currentCharStyle = + this.styles[lineIndex][charIndex === 0 ? charIndex : charIndex - 1]; + } + // we clone styles of all chars + // after cursor onto the current line + for (var index in this.styles[lineIndex]) { + var numIndex = parseInt(index, 10); + if (numIndex >= charIndex) { + somethingAdded = true; + newLineStyles[numIndex - charIndex] = this.styles[lineIndex][index]; + // remove lines from the previous line since they're on a new line now + if (!(isEndOfLine && charIndex === 0)) { + delete this.styles[lineIndex][index]; + } + } + } + var styleCarriedOver = false; + if (somethingAdded && !isEndOfLine) { + // if is end of line, the extra style we copied + // is probably not something we want + this.styles[lineIndex + qty] = newLineStyles; + styleCarriedOver = true; + } + if (styleCarriedOver) { + // skip the last line of since we already prepared it. + qty--; + } + // for the all the lines or all the other lines + // we clone current char style onto the next (otherwise empty) line + while (qty > 0) { + if (copiedStyle && copiedStyle[qty - 1]) { + this.styles[lineIndex + qty] = { + 0: Object.assign({}, copiedStyle[qty - 1]), + }; + } + else if (currentCharStyle) { + this.styles[lineIndex + qty] = { + 0: Object.assign({}, currentCharStyle), + }; + } + else { + delete this.styles[lineIndex + qty]; + } + qty--; + } + this._forceClearCache = true; + }, + /** + * Inserts style object for a given line/char index + * @param {Number} lineIndex Index of a line + * @param {Number} charIndex Index of a char + * @param {Number} quantity number Style object to insert, if given + * @param {Array} copiedStyle array of style objects + */ + insertCharStyleObject: function (lineIndex, charIndex, quantity, copiedStyle) { + if (!this.styles) { + this.styles = {}; + } + var currentLineStyles = this.styles[lineIndex], currentLineStylesCloned = currentLineStyles + ? Object.assign({}, currentLineStyles) + : {}; + quantity || (quantity = 1); + // shift all char styles by quantity forward + // 0,1,2,3 -> (charIndex=2) -> 0,1,3,4 -> (insert 2) -> 0,1,2,3,4 + for (var index in currentLineStylesCloned) { + var numericIndex = parseInt(index, 10); + if (numericIndex >= charIndex) { + currentLineStyles[numericIndex + quantity] = + currentLineStylesCloned[numericIndex]; + // only delete the style if there was nothing moved there + if (!currentLineStylesCloned[numericIndex - quantity]) { + delete currentLineStyles[numericIndex]; + } + } + } + this._forceClearCache = true; + if (copiedStyle) { + while (quantity--) { + if (!Object.keys(copiedStyle[quantity]).length) { + continue; + } + if (!this.styles[lineIndex]) { + this.styles[lineIndex] = {}; + } + this.styles[lineIndex][charIndex + quantity] = Object.assign({}, copiedStyle[quantity]); + } + return; + } + if (!currentLineStyles) { + return; + } + var newStyle = currentLineStyles[charIndex ? charIndex - 1 : 1]; + while (newStyle && quantity--) { + this.styles[lineIndex][charIndex + quantity] = Object.assign({}, newStyle); + } + }, + /** + * Inserts style object(s) + * @param {Array} insertedText Characters at the location where style is inserted + * @param {Number} start cursor index for inserting style + * @param {Array} [copiedStyle] array of style objects to insert. + */ + insertNewStyleBlock: function (insertedText, start, copiedStyle) { + var cursorLoc = this.get2DCursorLocation(start, true), addedLines = [0], linesLength = 0; + // get an array of how many char per lines are being added. + for (var i = 0; i < insertedText.length; i++) { + if (insertedText[i] === '\n') { + linesLength++; + addedLines[linesLength] = 0; + } + else { + addedLines[linesLength]++; + } + } + // for the first line copy the style from the current char position. + if (addedLines[0] > 0) { + this.insertCharStyleObject(cursorLoc.lineIndex, cursorLoc.charIndex, addedLines[0], copiedStyle); + copiedStyle = copiedStyle && copiedStyle.slice(addedLines[0] + 1); + } + linesLength && + this.insertNewlineStyleObject(cursorLoc.lineIndex, cursorLoc.charIndex + addedLines[0], linesLength); + for (var i = 1; i < linesLength; i++) { + if (addedLines[i] > 0) { + this.insertCharStyleObject(cursorLoc.lineIndex + i, 0, addedLines[i], copiedStyle); + } + else if (copiedStyle) { + // this test is required in order to close #6841 + // when a pasted buffer begins with a newline then + // this.styles[cursorLoc.lineIndex + i] and copiedStyle[0] + // may be undefined for some reason + if (this.styles[cursorLoc.lineIndex + i] && copiedStyle[0]) { + this.styles[cursorLoc.lineIndex + i][0] = copiedStyle[0]; + } + } + copiedStyle = copiedStyle && copiedStyle.slice(addedLines[i] + 1); + } + // we use i outside the loop to get it like linesLength + if (addedLines[i] > 0) { + this.insertCharStyleObject(cursorLoc.lineIndex + i, 0, addedLines[i], copiedStyle); + } + }, + /** + * Set the selectionStart and selectionEnd according to the new position of cursor + * mimic the key - mouse navigation when shift is pressed. + */ + setSelectionStartEndWithShift: function (start, end, newSelection) { + if (newSelection <= start) { + if (end === start) { + this._selectionDirection = 'left'; + } + else if (this._selectionDirection === 'right') { + this._selectionDirection = 'left'; + this.selectionEnd = start; + } + this.selectionStart = newSelection; + } + else if (newSelection > start && newSelection < end) { + if (this._selectionDirection === 'right') { + this.selectionEnd = newSelection; + } + else { + this.selectionStart = newSelection; + } + } + else { + // newSelection is > selection start and end + if (end === start) { + this._selectionDirection = 'right'; + } + else if (this._selectionDirection === 'left') { + this._selectionDirection = 'right'; + this.selectionStart = end; + } + this.selectionEnd = newSelection; + } + }, + setSelectionInBoundaries: function () { + var length = this.text.length; + if (this.selectionStart > length) { + this.selectionStart = length; + } + else if (this.selectionStart < 0) { + this.selectionStart = 0; + } + if (this.selectionEnd > length) { + this.selectionEnd = length; + } + else if (this.selectionEnd < 0) { + this.selectionEnd = 0; + } + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.IText.prototype, + /** @lends fabric.IText.prototype */ { + /** + * Initializes "dbclick" event handler + */ + initDoubleClickSimulation: function () { + // for double click + this.__lastClickTime = +new Date(); + // for triple click + this.__lastLastClickTime = +new Date(); + this.__lastPointer = {}; + this.on('mousedown', this.onMouseDown); + }, + /** + * Default event handler to simulate triple click + * @private + */ + onMouseDown: function (options) { + if (!this.canvas) { + return; + } + this.__newClickTime = +new Date(); + var newPointer = options.pointer; + if (this.isTripleClick(newPointer)) { + this.fire('tripleclick', options); + this._stopEvent(options.e); + } + this.__lastLastClickTime = this.__lastClickTime; + this.__lastClickTime = this.__newClickTime; + this.__lastPointer = newPointer; + this.__lastIsEditing = this.isEditing; + this.__lastSelected = this.selected; + }, + isTripleClick: function (newPointer) { + return (this.__newClickTime - this.__lastClickTime < 500 && + this.__lastClickTime - this.__lastLastClickTime < 500 && + this.__lastPointer.x === newPointer.x && + this.__lastPointer.y === newPointer.y); + }, + /** + * @private + */ + _stopEvent: function (e) { + e.preventDefault && e.preventDefault(); + e.stopPropagation && e.stopPropagation(); + }, + /** + * Initializes event handlers related to cursor or selection + */ + initCursorSelectionHandlers: function () { + this.initMousedownHandler(); + this.initMouseupHandler(); + this.initClicks(); + }, + /** + * Default handler for double click, select a word + */ + doubleClickHandler: function (options) { + if (!this.isEditing) { + return; + } + this.selectWord(this.getSelectionStartFromPointer(options.e)); + }, + /** + * Default handler for triple click, select a line + */ + tripleClickHandler: function (options) { + if (!this.isEditing) { + return; + } + this.selectLine(this.getSelectionStartFromPointer(options.e)); + }, + /** + * Initializes double and triple click event handlers + */ + initClicks: function () { + this.on('mousedblclick', this.doubleClickHandler); + this.on('tripleclick', this.tripleClickHandler); + }, + /** + * Default event handler for the basic functionalities needed on _mouseDown + * can be overridden to do something different. + * Scope of this implementation is: find the click position, set selectionStart + * find selectionEnd, initialize the drawing of either cursor or selection area + * initializing a mousedDown on a text area will cancel fabricjs knowledge of + * current compositionMode. It will be set to false. + */ + _mouseDownHandler: function (options) { + if (!this.canvas || + !this.editable || + (options.e.button && options.e.button !== 1)) { + return; + } + this.__isMousedown = true; + if (this.selected) { + this.inCompositionMode = false; + this.setCursorByClick(options.e); + } + if (this.isEditing) { + this.__selectionStartOnMouseDown = this.selectionStart; + if (this.selectionStart === this.selectionEnd) { + this.abortCursorAnimation(); + } + this.renderCursorOrSelection(); + } + }, + /** + * Default event handler for the basic functionalities needed on mousedown:before + * can be overridden to do something different. + * Scope of this implementation is: verify the object is already selected when mousing down + */ + _mouseDownHandlerBefore: function (options) { + if (!this.canvas || + !this.editable || + (options.e.button && options.e.button !== 1)) { + return; + } + // we want to avoid that an object that was selected and then becomes unselectable, + // may trigger editing mode in some way. + this.selected = this === this.canvas._activeObject; + // text dragging logic + var newSelection = this.getSelectionStartFromPointer(options.e); + this.__isDragging = + this.isEditing && + newSelection >= this.selectionStart && + newSelection <= this.selectionEnd && + this.selectionStart < this.selectionEnd; + }, + /** + * Initializes "mousedown" event handler + */ + initMousedownHandler: function () { + this.on('mousedown', this._mouseDownHandler); + this.on('mousedown:before', this._mouseDownHandlerBefore); + }, + /** + * Initializes "mouseup" event handler + */ + initMouseupHandler: function () { + this.on('mouseup', this.mouseUpHandler); + }, + /** + * standard handler for mouse up, overridable + * @private + */ + mouseUpHandler: function (options) { + this.__isMousedown = false; + if (!this.editable || + (this.group && !this.group.interactive) || + (options.transform && options.transform.actionPerformed) || + (options.e.button && options.e.button !== 1)) { + return; + } + if (this.canvas) { + var currentActive = this.canvas._activeObject; + if (currentActive && currentActive !== this) { + // avoid running this logic when there is an active object + // this because is possible with shift click and fast clicks, + // to rapidly deselect and reselect this object and trigger an enterEdit + return; + } + } + if (this.__lastSelected && !this.__corner) { + this.selected = false; + this.__lastSelected = false; + this.enterEditing(options.e); + if (this.selectionStart === this.selectionEnd) { + this.initDelayedCursor(true); + } + else { + this.renderCursorOrSelection(); + } + } + else { + this.selected = true; + } + }, + /** + * Changes cursor location in a text depending on passed pointer (x/y) object + * @param {Event} e Event object + */ + setCursorByClick: function (e) { + var newSelection = this.getSelectionStartFromPointer(e), start = this.selectionStart, end = this.selectionEnd; + if (e.shiftKey) { + this.setSelectionStartEndWithShift(start, end, newSelection); + } + else { + this.selectionStart = newSelection; + this.selectionEnd = newSelection; + } + if (this.isEditing) { + this._fireSelectionChanged(); + this._updateTextarea(); + } + }, + /** + * Returns index of a character corresponding to where an object was clicked + * @param {Event} e Event object + * @return {Number} Index of a character + */ + getSelectionStartFromPointer: function (e) { + var mouseOffset = this.getLocalPointer(e), prevWidth = 0, width = 0, height = 0, charIndex = 0, lineIndex = 0, lineLeftOffset, line; + for (var i = 0, len = this._textLines.length; i < len; i++) { + if (height <= mouseOffset.y) { + height += this.getHeightOfLine(i) * this.scaleY; + lineIndex = i; + if (i > 0) { + charIndex += + this._textLines[i - 1].length + + this.missingNewlineOffset(i - 1); + } + } + else { + break; + } + } + lineLeftOffset = Math.abs(this._getLineLeftOffset(lineIndex)); + width = lineLeftOffset * this.scaleX; + line = this._textLines[lineIndex]; + // handling of RTL: in order to get things work correctly, + // we assume RTL writing is mirrored compared to LTR writing. + // so in position detection we mirror the X offset, and when is time + // of rendering it, we mirror it again. + if (this.direction === 'rtl') { + mouseOffset.x = this.width * this.scaleX - mouseOffset.x; + } + for (var j = 0, jlen = line.length; j < jlen; j++) { + prevWidth = width; + // i removed something about flipX here, check. + width += this.__charBounds[lineIndex][j].kernedWidth * this.scaleX; + if (width <= mouseOffset.x) { + charIndex++; + } + else { + break; + } + } + return this._getNewSelectionStartFromOffset(mouseOffset, prevWidth, width, charIndex, jlen); + }, + /** + * @private + */ + _getNewSelectionStartFromOffset: function (mouseOffset, prevWidth, width, index, jlen) { + // we need Math.abs because when width is after the last char, the offset is given as 1, while is 0 + var distanceBtwLastCharAndCursor = mouseOffset.x - prevWidth, distanceBtwNextCharAndCursor = width - mouseOffset.x, offset = distanceBtwNextCharAndCursor > distanceBtwLastCharAndCursor || + distanceBtwNextCharAndCursor < 0 + ? 0 + : 1, newSelectionStart = index + offset; + // if object is horizontally flipped, mirror cursor location from the end + if (this.flipX) { + newSelectionStart = jlen - newSelectionStart; + } + if (newSelectionStart > this._text.length) { + newSelectionStart = this._text.length; + } + return newSelectionStart; + }, + }); +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric; + fabric.util.object.extend(fabric.IText.prototype, + /** @lends fabric.IText.prototype */ { + /** + * Initializes hidden textarea (needed to bring up keyboard in iOS) + */ + initHiddenTextarea: function () { + this.hiddenTextarea = fabric.document.createElement('textarea'); + this.hiddenTextarea.setAttribute('autocapitalize', 'off'); + this.hiddenTextarea.setAttribute('autocorrect', 'off'); + this.hiddenTextarea.setAttribute('autocomplete', 'off'); + this.hiddenTextarea.setAttribute('spellcheck', 'false'); + this.hiddenTextarea.setAttribute('data-fabric', 'textarea'); + this.hiddenTextarea.setAttribute('wrap', 'off'); + var style = this._calcTextareaPosition(); + // line-height: 1px; was removed from the style to fix this: + // https://bugs.chromium.org/p/chromium/issues/detail?id=870966 + this.hiddenTextarea.style.cssText = + 'position: absolute; top: ' + + style.top + + '; left: ' + + style.left + + '; z-index: -999; opacity: 0; width: 1px; height: 1px; font-size: 1px;' + + ' padding-top: ' + + style.fontSize + + ';'; + if (this.hiddenTextareaContainer) { + this.hiddenTextareaContainer.appendChild(this.hiddenTextarea); + } + else { + fabric.document.body.appendChild(this.hiddenTextarea); + } + fabric.util.addListener(this.hiddenTextarea, 'blur', this.blur.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'keydown', this.onKeyDown.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'keyup', this.onKeyUp.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'input', this.onInput.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'copy', this.copy.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'cut', this.copy.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'paste', this.paste.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'compositionstart', this.onCompositionStart.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'compositionupdate', this.onCompositionUpdate.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'compositionend', this.onCompositionEnd.bind(this)); + if (!this._clickHandlerInitialized && this.canvas) { + fabric.util.addListener(this.canvas.upperCanvasEl, 'click', this.onClick.bind(this)); + this._clickHandlerInitialized = true; + } }, - }; - - obj.animate('_currentCursorOpacity', targetOpacity, { - duration: duration, - onComplete: function() { - if (!tickState.isAborted) { - obj[completeMethod](); - } - }, - onChange: function() { - // we do not want to animate a selection, only cursor - if (obj.canvas && obj.selectionStart === obj.selectionEnd) { - obj.renderCursorOrSelection(); - } - }, - abort: function() { - return tickState.isAborted; - } - }); - return tickState; - }, - - /** - * @private - */ - _onTickComplete: function() { - - var _this = this; - - if (this._cursorTimeout1) { - clearTimeout(this._cursorTimeout1); - } - this._cursorTimeout1 = setTimeout(function() { - _this._currentTickCompleteState = _this._animateCursor(_this, 0, this.cursorDuration / 2, '_tick'); - }, 100); - }, - - /** - * Initializes delayed cursor - */ - initDelayedCursor: function(restart) { - var _this = this, - delay = restart ? 0 : this.cursorDelay; - - this.abortCursorAnimation(); - this._currentCursorOpacity = 1; - this._cursorTimeout2 = setTimeout(function() { - _this._tick(); - }, delay); - }, - - /** - * Aborts cursor animation and clears all timeouts - */ - abortCursorAnimation: function() { - var shouldClear = this._currentTickState || this._currentTickCompleteState, - canvas = this.canvas; - this._currentTickState && this._currentTickState.abort(); - this._currentTickCompleteState && this._currentTickCompleteState.abort(); - - clearTimeout(this._cursorTimeout1); - clearTimeout(this._cursorTimeout2); - - this._currentCursorOpacity = 0; - // to clear just itext area we need to transform the context - // it may not be worth it - if (shouldClear && canvas) { - canvas.clearContext(canvas.contextTop || canvas.contextContainer); - } - - }, - - /** - * Selects entire text - * @return {fabric.IText} thisArg - * @chainable - */ - selectAll: function() { - this.selectionStart = 0; - this.selectionEnd = this._text.length; - this._fireSelectionChanged(); - this._updateTextarea(); - return this; - }, - - /** - * Returns selected text - * @return {String} - */ - getSelectedText: function() { - return this._text.slice(this.selectionStart, this.selectionEnd).join(''); - }, - - /** - * Find new selection index representing start of current word according to current selection index - * @param {Number} startFrom Current selection index - * @return {Number} New selection index - */ - findWordBoundaryLeft: function(startFrom) { - var offset = 0, index = startFrom - 1; - - // remove space before cursor first - if (this._reSpace.test(this._text[index])) { - while (this._reSpace.test(this._text[index])) { - offset++; - index--; - } - } - while (/\S/.test(this._text[index]) && index > -1) { - offset++; - index--; - } - - return startFrom - offset; - }, - - /** - * Find new selection index representing end of current word according to current selection index - * @param {Number} startFrom Current selection index - * @return {Number} New selection index - */ - findWordBoundaryRight: function(startFrom) { - var offset = 0, index = startFrom; - - // remove space after cursor first - if (this._reSpace.test(this._text[index])) { - while (this._reSpace.test(this._text[index])) { - offset++; - index++; - } - } - while (/\S/.test(this._text[index]) && index < this._text.length) { - offset++; - index++; - } - - return startFrom + offset; - }, - - /** - * Find new selection index representing start of current line according to current selection index - * @param {Number} startFrom Current selection index - * @return {Number} New selection index - */ - findLineBoundaryLeft: function(startFrom) { - var offset = 0, index = startFrom - 1; - - while (!/\n/.test(this._text[index]) && index > -1) { - offset++; - index--; - } - - return startFrom - offset; - }, - - /** - * Find new selection index representing end of current line according to current selection index - * @param {Number} startFrom Current selection index - * @return {Number} New selection index - */ - findLineBoundaryRight: function(startFrom) { - var offset = 0, index = startFrom; - - while (!/\n/.test(this._text[index]) && index < this._text.length) { - offset++; - index++; - } - - return startFrom + offset; - }, - - /** - * Finds index corresponding to beginning or end of a word - * @param {Number} selectionStart Index of a character - * @param {Number} direction 1 or -1 - * @return {Number} Index of the beginning or end of a word - */ - searchWordBoundary: function(selectionStart, direction) { - var text = this._text, - index = this._reSpace.test(text[selectionStart]) ? selectionStart - 1 : selectionStart, - _char = text[index], - // wrong - reNonWord = fabric.reNonWord; - - while (!reNonWord.test(_char) && index > 0 && index < text.length) { - index += direction; - _char = text[index]; - } - if (reNonWord.test(_char)) { - index += direction === 1 ? 0 : 1; - } - return index; - }, - - /** - * Selects a word based on the index - * @param {Number} selectionStart Index of a character - */ - selectWord: function(selectionStart) { - selectionStart = selectionStart || this.selectionStart; - var newSelectionStart = this.searchWordBoundary(selectionStart, -1), /* search backwards */ - newSelectionEnd = this.searchWordBoundary(selectionStart, 1); /* search forward */ - - this.selectionStart = newSelectionStart; - this.selectionEnd = newSelectionEnd; - this._fireSelectionChanged(); - this._updateTextarea(); - this.renderCursorOrSelection(); - }, - - /** - * Selects a line based on the index - * @param {Number} selectionStart Index of a character - * @return {fabric.IText} thisArg - * @chainable - */ - selectLine: function(selectionStart) { - selectionStart = selectionStart || this.selectionStart; - var newSelectionStart = this.findLineBoundaryLeft(selectionStart), - newSelectionEnd = this.findLineBoundaryRight(selectionStart); - - this.selectionStart = newSelectionStart; - this.selectionEnd = newSelectionEnd; - this._fireSelectionChanged(); - this._updateTextarea(); - return this; - }, - - /** - * Enters editing state - * @return {fabric.IText} thisArg - * @chainable - */ - enterEditing: function(e) { - if (this.isEditing || !this.editable) { - return; - } - - if (this.canvas) { - this.canvas.calcOffset(); - this.exitEditingOnOthers(this.canvas); - } - - this.isEditing = true; - - this.initHiddenTextarea(e); - this.hiddenTextarea.focus(); - this.hiddenTextarea.value = this.text; - this._updateTextarea(); - this._saveEditingProps(); - this._setEditingProps(); - this._textBeforeEdit = this.text; - - this._tick(); - this.fire('editing:entered'); - this._fireSelectionChanged(); - if (!this.canvas) { - return this; - } - this.canvas.fire('text:editing:entered', { target: this }); - this.initMouseMoveHandler(); - this.canvas.requestRenderAll(); - return this; - }, - - exitEditingOnOthers: function(canvas) { - if (canvas._iTextInstances) { - canvas._iTextInstances.forEach(function(obj) { - obj.selected = false; - if (obj.isEditing) { - obj.exitEditing(); - } - }); - } - }, - - /** - * Initializes "mousemove" event handler - */ - initMouseMoveHandler: function() { - this.canvas.on('mouse:move', this.mouseMoveHandler); - }, - - /** - * @private - */ - mouseMoveHandler: function(options) { - if (!this.__isMousedown || !this.isEditing) { - return; - } - - var newSelectionStart = this.getSelectionStartFromPointer(options.e), - currentStart = this.selectionStart, - currentEnd = this.selectionEnd; - if ( - (newSelectionStart !== this.__selectionStartOnMouseDown || currentStart === currentEnd) - && - (currentStart === newSelectionStart || currentEnd === newSelectionStart) - ) { - return; - } - if (newSelectionStart > this.__selectionStartOnMouseDown) { - this.selectionStart = this.__selectionStartOnMouseDown; - this.selectionEnd = newSelectionStart; - } - else { - this.selectionStart = newSelectionStart; - this.selectionEnd = this.__selectionStartOnMouseDown; - } - if (this.selectionStart !== currentStart || this.selectionEnd !== currentEnd) { - this.restartCursorIfNeeded(); - this._fireSelectionChanged(); - this._updateTextarea(); - this.renderCursorOrSelection(); - } - }, - - /** - * @private - */ - _setEditingProps: function() { - this.hoverCursor = 'text'; - - if (this.canvas) { - this.canvas.defaultCursor = this.canvas.moveCursor = 'text'; - } - - this.borderColor = this.editingBorderColor; - this.hasControls = this.selectable = false; - this.lockMovementX = this.lockMovementY = true; - }, - - /** - * convert from textarea to grapheme indexes - */ - fromStringToGraphemeSelection: function(start, end, text) { - var smallerTextStart = text.slice(0, start), - graphemeStart = fabric.util.string.graphemeSplit(smallerTextStart).length; - if (start === end) { - return { selectionStart: graphemeStart, selectionEnd: graphemeStart }; - } - var smallerTextEnd = text.slice(start, end), - graphemeEnd = fabric.util.string.graphemeSplit(smallerTextEnd).length; - return { selectionStart: graphemeStart, selectionEnd: graphemeStart + graphemeEnd }; - }, - - /** - * convert from fabric to textarea values - */ - fromGraphemeToStringSelection: function(start, end, _text) { - var smallerTextStart = _text.slice(0, start), - graphemeStart = smallerTextStart.join('').length; - if (start === end) { - return { selectionStart: graphemeStart, selectionEnd: graphemeStart }; - } - var smallerTextEnd = _text.slice(start, end), - graphemeEnd = smallerTextEnd.join('').length; - return { selectionStart: graphemeStart, selectionEnd: graphemeStart + graphemeEnd }; - }, - - /** - * @private - */ - _updateTextarea: function() { - this.cursorOffsetCache = { }; - if (!this.hiddenTextarea) { - return; - } - if (!this.inCompositionMode) { - var newSelection = this.fromGraphemeToStringSelection(this.selectionStart, this.selectionEnd, this._text); - this.hiddenTextarea.selectionStart = newSelection.selectionStart; - this.hiddenTextarea.selectionEnd = newSelection.selectionEnd; - } - this.updateTextareaPosition(); - }, - - /** - * @private - */ - updateFromTextArea: function() { - if (!this.hiddenTextarea) { - return; - } - this.cursorOffsetCache = { }; - this.text = this.hiddenTextarea.value; - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - this.setCoords(); - } - var newSelection = this.fromStringToGraphemeSelection( - this.hiddenTextarea.selectionStart, this.hiddenTextarea.selectionEnd, this.hiddenTextarea.value); - this.selectionEnd = this.selectionStart = newSelection.selectionEnd; - if (!this.inCompositionMode) { - this.selectionStart = newSelection.selectionStart; - } - this.updateTextareaPosition(); - }, - - /** - * @private - */ - updateTextareaPosition: function() { - if (this.selectionStart === this.selectionEnd) { - var style = this._calcTextareaPosition(); - this.hiddenTextarea.style.left = style.left; - this.hiddenTextarea.style.top = style.top; - } - }, - - /** - * @private - * @return {Object} style contains style for hiddenTextarea - */ - _calcTextareaPosition: function() { - if (!this.canvas) { - return { x: 1, y: 1 }; - } - var desiredPosition = this.inCompositionMode ? this.compositionStart : this.selectionStart, - boundaries = this._getCursorBoundaries(desiredPosition), - cursorLocation = this.get2DCursorLocation(desiredPosition), - lineIndex = cursorLocation.lineIndex, - charIndex = cursorLocation.charIndex, - charHeight = this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize') * this.lineHeight, - leftOffset = boundaries.leftOffset, - m = this.calcTransformMatrix(), - p = { - x: boundaries.left + leftOffset, - y: boundaries.top + boundaries.topOffset + charHeight - }, - retinaScaling = this.canvas.getRetinaScaling(), - upperCanvas = this.canvas.upperCanvasEl, - upperCanvasWidth = upperCanvas.width / retinaScaling, - upperCanvasHeight = upperCanvas.height / retinaScaling, - maxWidth = upperCanvasWidth - charHeight, - maxHeight = upperCanvasHeight - charHeight, - scaleX = upperCanvas.clientWidth / upperCanvasWidth, - scaleY = upperCanvas.clientHeight / upperCanvasHeight; - - p = fabric.util.transformPoint(p, m); - p = fabric.util.transformPoint(p, this.canvas.viewportTransform); - p.x *= scaleX; - p.y *= scaleY; - if (p.x < 0) { - p.x = 0; - } - if (p.x > maxWidth) { - p.x = maxWidth; - } - if (p.y < 0) { - p.y = 0; - } - if (p.y > maxHeight) { - p.y = maxHeight; - } - - // add canvas offset on document - p.x += this.canvas._offset.left; - p.y += this.canvas._offset.top; - - return { left: p.x + 'px', top: p.y + 'px', fontSize: charHeight + 'px', charHeight: charHeight }; - }, - - /** - * @private - */ - _saveEditingProps: function() { - this._savedProps = { - hasControls: this.hasControls, - borderColor: this.borderColor, - lockMovementX: this.lockMovementX, - lockMovementY: this.lockMovementY, - hoverCursor: this.hoverCursor, - selectable: this.selectable, - defaultCursor: this.canvas && this.canvas.defaultCursor, - moveCursor: this.canvas && this.canvas.moveCursor - }; - }, - - /** - * @private - */ - _restoreEditingProps: function() { - if (!this._savedProps) { - return; - } - - this.hoverCursor = this._savedProps.hoverCursor; - this.hasControls = this._savedProps.hasControls; - this.borderColor = this._savedProps.borderColor; - this.selectable = this._savedProps.selectable; - this.lockMovementX = this._savedProps.lockMovementX; - this.lockMovementY = this._savedProps.lockMovementY; - - if (this.canvas) { - this.canvas.defaultCursor = this._savedProps.defaultCursor; - this.canvas.moveCursor = this._savedProps.moveCursor; - } - }, - - /** - * Exits from editing state - * @return {fabric.IText} thisArg - * @chainable - */ - exitEditing: function() { - var isTextChanged = (this._textBeforeEdit !== this.text); - var hiddenTextarea = this.hiddenTextarea; - this.selected = false; - this.isEditing = false; - - this.selectionEnd = this.selectionStart; - - if (hiddenTextarea) { - hiddenTextarea.blur && hiddenTextarea.blur(); - hiddenTextarea.parentNode && hiddenTextarea.parentNode.removeChild(hiddenTextarea); - } - this.hiddenTextarea = null; - this.abortCursorAnimation(); - this._restoreEditingProps(); - this._currentCursorOpacity = 0; - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - this.setCoords(); - } - this.fire('editing:exited'); - isTextChanged && this.fire('modified'); - if (this.canvas) { - this.canvas.off('mouse:move', this.mouseMoveHandler); - this.canvas.fire('text:editing:exited', { target: this }); - isTextChanged && this.canvas.fire('object:modified', { target: this }); - } - return this; - }, - - /** - * @private - */ - _removeExtraneousStyles: function() { - for (var prop in this.styles) { - if (!this._textLines[prop]) { - delete this.styles[prop]; - } - } - }, - - /** - * remove and reflow a style block from start to end. - * @param {Number} start linear start position for removal (included in removal) - * @param {Number} end linear end position for removal ( excluded from removal ) - */ - removeStyleFromTo: function(start, end) { - var cursorStart = this.get2DCursorLocation(start, true), - cursorEnd = this.get2DCursorLocation(end, true), - lineStart = cursorStart.lineIndex, - charStart = cursorStart.charIndex, - lineEnd = cursorEnd.lineIndex, - charEnd = cursorEnd.charIndex, - i, styleObj; - if (lineStart !== lineEnd) { - // step1 remove the trailing of lineStart - if (this.styles[lineStart]) { - for (i = charStart; i < this._unwrappedTextLines[lineStart].length; i++) { - delete this.styles[lineStart][i]; - } - } - // step2 move the trailing of lineEnd to lineStart if needed - if (this.styles[lineEnd]) { - for (i = charEnd; i < this._unwrappedTextLines[lineEnd].length; i++) { - styleObj = this.styles[lineEnd][i]; - if (styleObj) { - this.styles[lineStart] || (this.styles[lineStart] = { }); - this.styles[lineStart][charStart + i - charEnd] = styleObj; - } - } - } - // step3 detects lines will be completely removed. - for (i = lineStart + 1; i <= lineEnd; i++) { - delete this.styles[i]; - } - // step4 shift remaining lines. - this.shiftLineStyles(lineEnd, lineStart - lineEnd); - } - else { - // remove and shift left on the same line - if (this.styles[lineStart]) { - styleObj = this.styles[lineStart]; - var diff = charEnd - charStart, numericChar, _char; - for (i = charStart; i < charEnd; i++) { - delete styleObj[i]; - } - for (_char in this.styles[lineStart]) { - numericChar = parseInt(_char, 10); - if (numericChar >= charEnd) { - styleObj[numericChar - diff] = styleObj[_char]; - delete styleObj[_char]; - } - } - } - } - }, - - /** - * Shifts line styles up or down - * @param {Number} lineIndex Index of a line - * @param {Number} offset Can any number? - */ - shiftLineStyles: function(lineIndex, offset) { - // shift all line styles by offset upward or downward - // do not clone deep. we need new array, not new style objects - var clonedStyles = clone(this.styles); - for (var line in this.styles) { - var numericLine = parseInt(line, 10); - if (numericLine > lineIndex) { - this.styles[numericLine + offset] = clonedStyles[numericLine]; - if (!clonedStyles[numericLine - offset]) { - delete this.styles[numericLine]; - } - } - } - }, - - restartCursorIfNeeded: function() { - if (!this._currentTickState || this._currentTickState.isAborted - || !this._currentTickCompleteState || this._currentTickCompleteState.isAborted - ) { - this.initDelayedCursor(); - } - }, - - /** - * Handle insertion of more consecutive style lines for when one or more - * newlines gets added to the text. Since current style needs to be shifted - * first we shift the current style of the number lines needed, then we add - * new lines from the last to the first. - * @param {Number} lineIndex Index of a line - * @param {Number} charIndex Index of a char - * @param {Number} qty number of lines to add - * @param {Array} copiedStyle Array of objects styles - */ - insertNewlineStyleObject: function(lineIndex, charIndex, qty, copiedStyle) { - var currentCharStyle, - newLineStyles = {}, - somethingAdded = false, - isEndOfLine = this._unwrappedTextLines[lineIndex].length === charIndex; - - qty || (qty = 1); - this.shiftLineStyles(lineIndex, qty); - if (this.styles[lineIndex]) { - currentCharStyle = this.styles[lineIndex][charIndex === 0 ? charIndex : charIndex - 1]; - } - // we clone styles of all chars - // after cursor onto the current line - for (var index in this.styles[lineIndex]) { - var numIndex = parseInt(index, 10); - if (numIndex >= charIndex) { - somethingAdded = true; - newLineStyles[numIndex - charIndex] = this.styles[lineIndex][index]; - // remove lines from the previous line since they're on a new line now - if (!(isEndOfLine && charIndex === 0)) { - delete this.styles[lineIndex][index]; - } - } - } - var styleCarriedOver = false; - if (somethingAdded && !isEndOfLine) { - // if is end of line, the extra style we copied - // is probably not something we want - this.styles[lineIndex + qty] = newLineStyles; - styleCarriedOver = true; - } - if (styleCarriedOver) { - // skip the last line of since we already prepared it. - qty--; - } - // for the all the lines or all the other lines - // we clone current char style onto the next (otherwise empty) line - while (qty > 0) { - if (copiedStyle && copiedStyle[qty - 1]) { - this.styles[lineIndex + qty] = { 0: clone(copiedStyle[qty - 1]) }; - } - else if (currentCharStyle) { - this.styles[lineIndex + qty] = { 0: clone(currentCharStyle) }; - } - else { - delete this.styles[lineIndex + qty]; - } - qty--; - } - this._forceClearCache = true; - }, - - /** - * Inserts style object for a given line/char index - * @param {Number} lineIndex Index of a line - * @param {Number} charIndex Index of a char - * @param {Number} quantity number Style object to insert, if given - * @param {Array} copiedStyle array of style objects - */ - insertCharStyleObject: function(lineIndex, charIndex, quantity, copiedStyle) { - if (!this.styles) { - this.styles = {}; - } - var currentLineStyles = this.styles[lineIndex], - currentLineStylesCloned = currentLineStyles ? clone(currentLineStyles) : {}; - - quantity || (quantity = 1); - // shift all char styles by quantity forward - // 0,1,2,3 -> (charIndex=2) -> 0,1,3,4 -> (insert 2) -> 0,1,2,3,4 - for (var index in currentLineStylesCloned) { - var numericIndex = parseInt(index, 10); - if (numericIndex >= charIndex) { - currentLineStyles[numericIndex + quantity] = currentLineStylesCloned[numericIndex]; - // only delete the style if there was nothing moved there - if (!currentLineStylesCloned[numericIndex - quantity]) { - delete currentLineStyles[numericIndex]; - } - } - } - this._forceClearCache = true; - if (copiedStyle) { - while (quantity--) { - if (!Object.keys(copiedStyle[quantity]).length) { - continue; - } - if (!this.styles[lineIndex]) { - this.styles[lineIndex] = {}; - } - this.styles[lineIndex][charIndex + quantity] = clone(copiedStyle[quantity]); - } - return; - } - if (!currentLineStyles) { - return; - } - var newStyle = currentLineStyles[charIndex ? charIndex - 1 : 1]; - while (newStyle && quantity--) { - this.styles[lineIndex][charIndex + quantity] = clone(newStyle); - } - }, + /** + * For functionalities on keyDown + * Map a special key to a function of the instance/prototype + * If you need different behaviour for ESC or TAB or arrows, you have to change + * this map setting the name of a function that you build on the fabric.Itext or + * your prototype. + * the map change will affect all Instances unless you need for only some text Instances + * in that case you have to clone this object and assign your Instance. + * this.keysMap = Object.assign({}, this.keysMap); + * The function must be in fabric.Itext.prototype.myFunction And will receive event as args[0] + */ + keysMap: { + 9: 'exitEditing', + 27: 'exitEditing', + 33: 'moveCursorUp', + 34: 'moveCursorDown', + 35: 'moveCursorRight', + 36: 'moveCursorLeft', + 37: 'moveCursorLeft', + 38: 'moveCursorUp', + 39: 'moveCursorRight', + 40: 'moveCursorDown', + }, + keysMapRtl: { + 9: 'exitEditing', + 27: 'exitEditing', + 33: 'moveCursorUp', + 34: 'moveCursorDown', + 35: 'moveCursorLeft', + 36: 'moveCursorRight', + 37: 'moveCursorRight', + 38: 'moveCursorUp', + 39: 'moveCursorLeft', + 40: 'moveCursorDown', + }, + /** + * For functionalities on keyUp + ctrl || cmd + */ + ctrlKeysMapUp: { + 67: 'copy', + 88: 'cut', + }, + /** + * For functionalities on keyDown + ctrl || cmd + */ + ctrlKeysMapDown: { + 65: 'selectAll', + }, + onClick: function () { + // No need to trigger click event here, focus is enough to have the keyboard appear on Android + this.hiddenTextarea && this.hiddenTextarea.focus(); + }, + /** + * Override this method to customize cursor behavior on textbox blur + */ + blur: function () { + this.abortCursorAnimation(); + }, + /** + * Handles keydown event + * only used for arrows and combination of modifier keys. + * @param {Event} e Event object + */ + onKeyDown: function (e) { + if (!this.isEditing) { + return; + } + var keyMap = this.direction === 'rtl' ? this.keysMapRtl : this.keysMap; + if (e.keyCode in keyMap) { + this[keyMap[e.keyCode]](e); + } + else if (e.keyCode in this.ctrlKeysMapDown && + (e.ctrlKey || e.metaKey)) { + this[this.ctrlKeysMapDown[e.keyCode]](e); + } + else { + return; + } + e.stopImmediatePropagation(); + e.preventDefault(); + if (e.keyCode >= 33 && e.keyCode <= 40) { + // if i press an arrow key just update selection + this.inCompositionMode = false; + this.clearContextTop(); + this.renderCursorOrSelection(); + } + else { + this.canvas && this.canvas.requestRenderAll(); + } + }, + /** + * Handles keyup event + * We handle KeyUp because ie11 and edge have difficulties copy/pasting + * if a copy/cut event fired, keyup is dismissed + * @param {Event} e Event object + */ + onKeyUp: function (e) { + if (!this.isEditing || this._copyDone || this.inCompositionMode) { + this._copyDone = false; + return; + } + if (e.keyCode in this.ctrlKeysMapUp && (e.ctrlKey || e.metaKey)) { + this[this.ctrlKeysMapUp[e.keyCode]](e); + } + else { + return; + } + e.stopImmediatePropagation(); + e.preventDefault(); + this.canvas && this.canvas.requestRenderAll(); + }, + /** + * Handles onInput event + * @param {Event} e Event object + */ + onInput: function (e) { + var fromPaste = this.fromPaste; + this.fromPaste = false; + e && e.stopPropagation(); + if (!this.isEditing) { + return; + } + // decisions about style changes. + var nextText = this._splitTextIntoLines(this.hiddenTextarea.value).graphemeText, charCount = this._text.length, nextCharCount = nextText.length, removedText, insertedText, charDiff = nextCharCount - charCount, selectionStart = this.selectionStart, selectionEnd = this.selectionEnd, selection = selectionStart !== selectionEnd, copiedStyle, removeFrom, removeTo; + if (this.hiddenTextarea.value === '') { + this.styles = {}; + this.updateFromTextArea(); + this.fire('changed'); + if (this.canvas) { + this.canvas.fire('text:changed', { target: this }); + this.canvas.requestRenderAll(); + } + return; + } + var textareaSelection = this.fromStringToGraphemeSelection(this.hiddenTextarea.selectionStart, this.hiddenTextarea.selectionEnd, this.hiddenTextarea.value); + var backDelete = selectionStart > textareaSelection.selectionStart; + if (selection) { + removedText = this._text.slice(selectionStart, selectionEnd); + charDiff += selectionEnd - selectionStart; + } + else if (nextCharCount < charCount) { + if (backDelete) { + removedText = this._text.slice(selectionEnd + charDiff, selectionEnd); + } + else { + removedText = this._text.slice(selectionStart, selectionStart - charDiff); + } + } + insertedText = nextText.slice(textareaSelection.selectionEnd - charDiff, textareaSelection.selectionEnd); + if (removedText && removedText.length) { + if (insertedText.length) { + // let's copy some style before deleting. + // we want to copy the style before the cursor OR the style at the cursor if selection + // is bigger than 0. + copiedStyle = this.getSelectionStyles(selectionStart, selectionStart + 1, false); + // now duplicate the style one for each inserted text. + copiedStyle = insertedText.map(function () { + // this return an array of references, but that is fine since we are + // copying the style later. + return copiedStyle[0]; + }); + } + if (selection) { + removeFrom = selectionStart; + removeTo = selectionEnd; + } + else if (backDelete) { + // detect differences between forwardDelete and backDelete + removeFrom = selectionEnd - removedText.length; + removeTo = selectionEnd; + } + else { + removeFrom = selectionEnd; + removeTo = selectionEnd + removedText.length; + } + this.removeStyleFromTo(removeFrom, removeTo); + } + if (insertedText.length) { + if (fromPaste && + insertedText.join('') === fabric.copiedText && + !config.disableStyleCopyPaste) { + copiedStyle = fabric.copiedTextStyle; + } + this.insertNewStyleBlock(insertedText, selectionStart, copiedStyle); + } + this.updateFromTextArea(); + this.fire('changed'); + if (this.canvas) { + this.canvas.fire('text:changed', { target: this }); + this.canvas.requestRenderAll(); + } + }, + /** + * Composition start + */ + onCompositionStart: function () { + this.inCompositionMode = true; + }, + /** + * Composition end + */ + onCompositionEnd: function () { + this.inCompositionMode = false; + }, + // /** + // * Composition update + // */ + onCompositionUpdate: function (e) { + this.compositionStart = e.target.selectionStart; + this.compositionEnd = e.target.selectionEnd; + this.updateTextareaPosition(); + }, + /** + * Copies selected text + * @param {Event} e Event object + */ + copy: function () { + if (this.selectionStart === this.selectionEnd) { + //do not cut-copy if no selection + return; + } + fabric.copiedText = this.getSelectedText(); + if (!config.disableStyleCopyPaste) { + fabric.copiedTextStyle = this.getSelectionStyles(this.selectionStart, this.selectionEnd, true); + } + else { + fabric.copiedTextStyle = null; + } + this._copyDone = true; + }, + /** + * Pastes text + * @param {Event} e Event object + */ + paste: function () { + this.fromPaste = true; + }, + /** + * @private + * @param {Event} e Event object + * @return {Object} Clipboard data object + */ + _getClipboardData: function (e) { + return (e && e.clipboardData) || fabric.window.clipboardData; + }, + /** + * Finds the width in pixels before the cursor on the same line + * @private + * @param {Number} lineIndex + * @param {Number} charIndex + * @return {Number} widthBeforeCursor width before cursor + */ + _getWidthBeforeCursor: function (lineIndex, charIndex) { + var widthBeforeCursor = this._getLineLeftOffset(lineIndex), bound; + if (charIndex > 0) { + bound = this.__charBounds[lineIndex][charIndex - 1]; + widthBeforeCursor += bound.left + bound.width; + } + return widthBeforeCursor; + }, + /** + * Gets start offset of a selection + * @param {Event} e Event object + * @param {Boolean} isRight + * @return {Number} + */ + getDownCursorOffset: function (e, isRight) { + var selectionProp = this._getSelectionForOffset(e, isRight), cursorLocation = this.get2DCursorLocation(selectionProp), lineIndex = cursorLocation.lineIndex; + // if on last line, down cursor goes to end of line + if (lineIndex === this._textLines.length - 1 || + e.metaKey || + e.keyCode === 34) { + // move to the end of a text + return this._text.length - selectionProp; + } + var charIndex = cursorLocation.charIndex, widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex), indexOnOtherLine = this._getIndexOnLine(lineIndex + 1, widthBeforeCursor), textAfterCursor = this._textLines[lineIndex].slice(charIndex); + return (textAfterCursor.length + + indexOnOtherLine + + 1 + + this.missingNewlineOffset(lineIndex)); + }, + /** + * private + * Helps finding if the offset should be counted from Start or End + * @param {Event} e Event object + * @param {Boolean} isRight + * @return {Number} + */ + _getSelectionForOffset: function (e, isRight) { + if (e.shiftKey && + this.selectionStart !== this.selectionEnd && + isRight) { + return this.selectionEnd; + } + else { + return this.selectionStart; + } + }, + /** + * @param {Event} e Event object + * @param {Boolean} isRight + * @return {Number} + */ + getUpCursorOffset: function (e, isRight) { + var selectionProp = this._getSelectionForOffset(e, isRight), cursorLocation = this.get2DCursorLocation(selectionProp), lineIndex = cursorLocation.lineIndex; + if (lineIndex === 0 || e.metaKey || e.keyCode === 33) { + // if on first line, up cursor goes to start of line + return -selectionProp; + } + var charIndex = cursorLocation.charIndex, widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex), indexOnOtherLine = this._getIndexOnLine(lineIndex - 1, widthBeforeCursor), textBeforeCursor = this._textLines[lineIndex].slice(0, charIndex), missingNewlineOffset = this.missingNewlineOffset(lineIndex - 1); + // return a negative offset + return (-this._textLines[lineIndex - 1].length + + indexOnOtherLine - + textBeforeCursor.length + + (1 - missingNewlineOffset)); + }, + /** + * for a given width it founds the matching character. + * @private + */ + _getIndexOnLine: function (lineIndex, width) { + var line = this._textLines[lineIndex], lineLeftOffset = this._getLineLeftOffset(lineIndex), widthOfCharsOnLine = lineLeftOffset, indexOnLine = 0, charWidth, foundMatch; + for (var j = 0, jlen = line.length; j < jlen; j++) { + charWidth = this.__charBounds[lineIndex][j].width; + widthOfCharsOnLine += charWidth; + if (widthOfCharsOnLine > width) { + foundMatch = true; + var leftEdge = widthOfCharsOnLine - charWidth, rightEdge = widthOfCharsOnLine, offsetFromLeftEdge = Math.abs(leftEdge - width), offsetFromRightEdge = Math.abs(rightEdge - width); + indexOnLine = offsetFromRightEdge < offsetFromLeftEdge ? j : j - 1; + break; + } + } + // reached end + if (!foundMatch) { + indexOnLine = line.length - 1; + } + return indexOnLine; + }, + /** + * Moves cursor down + * @param {Event} e Event object + */ + moveCursorDown: function (e) { + if (this.selectionStart >= this._text.length && + this.selectionEnd >= this._text.length) { + return; + } + this._moveCursorUpOrDown('Down', e); + }, + /** + * Moves cursor up + * @param {Event} e Event object + */ + moveCursorUp: function (e) { + if (this.selectionStart === 0 && this.selectionEnd === 0) { + return; + } + this._moveCursorUpOrDown('Up', e); + }, + /** + * Moves cursor up or down, fires the events + * @param {String} direction 'Up' or 'Down' + * @param {Event} e Event object + */ + _moveCursorUpOrDown: function (direction, e) { + // getUpCursorOffset + // getDownCursorOffset + var action = 'get' + direction + 'CursorOffset', offset = this[action](e, this._selectionDirection === 'right'); + if (e.shiftKey) { + this.moveCursorWithShift(offset); + } + else { + this.moveCursorWithoutShift(offset); + } + if (offset !== 0) { + this.setSelectionInBoundaries(); + this.abortCursorAnimation(); + this._currentCursorOpacity = 1; + this.initDelayedCursor(); + this._fireSelectionChanged(); + this._updateTextarea(); + } + }, + /** + * Moves cursor with shift + * @param {Number} offset + */ + moveCursorWithShift: function (offset) { + var newSelection = this._selectionDirection === 'left' + ? this.selectionStart + offset + : this.selectionEnd + offset; + this.setSelectionStartEndWithShift(this.selectionStart, this.selectionEnd, newSelection); + return offset !== 0; + }, + /** + * Moves cursor up without shift + * @param {Number} offset + */ + moveCursorWithoutShift: function (offset) { + if (offset < 0) { + this.selectionStart += offset; + this.selectionEnd = this.selectionStart; + } + else { + this.selectionEnd += offset; + this.selectionStart = this.selectionEnd; + } + return offset !== 0; + }, + /** + * Moves cursor left + * @param {Event} e Event object + */ + moveCursorLeft: function (e) { + if (this.selectionStart === 0 && this.selectionEnd === 0) { + return; + } + this._moveCursorLeftOrRight('Left', e); + }, + /** + * @private + * @return {Boolean} true if a change happened + */ + _move: function (e, prop, direction) { + var newValue; + if (e.altKey) { + newValue = this['findWordBoundary' + direction](this[prop]); + } + else if (e.metaKey || e.keyCode === 35 || e.keyCode === 36) { + newValue = this['findLineBoundary' + direction](this[prop]); + } + else { + this[prop] += direction === 'Left' ? -1 : 1; + return true; + } + if (typeof newValue !== 'undefined' && this[prop] !== newValue) { + this[prop] = newValue; + return true; + } + }, + /** + * @private + */ + _moveLeft: function (e, prop) { + return this._move(e, prop, 'Left'); + }, + /** + * @private + */ + _moveRight: function (e, prop) { + return this._move(e, prop, 'Right'); + }, + /** + * Moves cursor left without keeping selection + * @param {Event} e + */ + moveCursorLeftWithoutShift: function (e) { + var change = true; + this._selectionDirection = 'left'; + // only move cursor when there is no selection, + // otherwise we discard it, and leave cursor on same place + if (this.selectionEnd === this.selectionStart && + this.selectionStart !== 0) { + change = this._moveLeft(e, 'selectionStart'); + } + this.selectionEnd = this.selectionStart; + return change; + }, + /** + * Moves cursor left while keeping selection + * @param {Event} e + */ + moveCursorLeftWithShift: function (e) { + if (this._selectionDirection === 'right' && + this.selectionStart !== this.selectionEnd) { + return this._moveLeft(e, 'selectionEnd'); + } + else if (this.selectionStart !== 0) { + this._selectionDirection = 'left'; + return this._moveLeft(e, 'selectionStart'); + } + }, + /** + * Moves cursor right + * @param {Event} e Event object + */ + moveCursorRight: function (e) { + if (this.selectionStart >= this._text.length && + this.selectionEnd >= this._text.length) { + return; + } + this._moveCursorLeftOrRight('Right', e); + }, + /** + * Moves cursor right or Left, fires event + * @param {String} direction 'Left', 'Right' + * @param {Event} e Event object + */ + _moveCursorLeftOrRight: function (direction, e) { + var actionName = 'moveCursor' + direction + 'With'; + this._currentCursorOpacity = 1; + if (e.shiftKey) { + actionName += 'Shift'; + } + else { + actionName += 'outShift'; + } + if (this[actionName](e)) { + this.abortCursorAnimation(); + this.initDelayedCursor(); + this._fireSelectionChanged(); + this._updateTextarea(); + } + }, + /** + * Moves cursor right while keeping selection + * @param {Event} e + */ + moveCursorRightWithShift: function (e) { + if (this._selectionDirection === 'left' && + this.selectionStart !== this.selectionEnd) { + return this._moveRight(e, 'selectionStart'); + } + else if (this.selectionEnd !== this._text.length) { + this._selectionDirection = 'right'; + return this._moveRight(e, 'selectionEnd'); + } + }, + /** + * Moves cursor right without keeping selection + * @param {Event} e Event object + */ + moveCursorRightWithoutShift: function (e) { + var changed = true; + this._selectionDirection = 'right'; + if (this.selectionStart === this.selectionEnd) { + changed = this._moveRight(e, 'selectionStart'); + this.selectionEnd = this.selectionStart; + } + else { + this.selectionStart = this.selectionEnd; + } + return changed; + }, + /** + * Removes characters from start/end + * start/end ar per grapheme position in _text array. + * + * @param {Number} start + * @param {Number} end default to start + 1 + */ + removeChars: function (start, end) { + if (typeof end === 'undefined') { + end = start + 1; + } + this.removeStyleFromTo(start, end); + this._text.splice(start, end - start); + this.text = this._text.join(''); + this.set('dirty', true); + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + this.setCoords(); + } + this._removeExtraneousStyles(); + }, + /** + * insert characters at start position, before start position. + * start equal 1 it means the text get inserted between actual grapheme 0 and 1 + * if style array is provided, it must be as the same length of text in graphemes + * if end is provided and is bigger than start, old text is replaced. + * start/end ar per grapheme position in _text array. + * + * @param {String} text text to insert + * @param {Array} style array of style objects + * @param {Number} start + * @param {Number} end default to start + 1 + */ + insertChars: function (text, style, start, end) { + if (typeof end === 'undefined') { + end = start; + } + if (end > start) { + this.removeStyleFromTo(start, end); + } + var graphemes = this.graphemeSplit(text); + this.insertNewStyleBlock(graphemes, start, style); + this._text = [].concat(this._text.slice(0, start), graphemes, this._text.slice(end)); + this.text = this._text.join(''); + this.set('dirty', true); + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + this.setCoords(); + } + this._removeExtraneousStyles(); + }, + }); +})(typeof exports !== 'undefined' ? exports : window); - /** - * Inserts style object(s) - * @param {Array} insertedText Characters at the location where style is inserted - * @param {Number} start cursor index for inserting style - * @param {Array} [copiedStyle] array of style objects to insert. - */ - insertNewStyleBlock: function(insertedText, start, copiedStyle) { - var cursorLoc = this.get2DCursorLocation(start, true), - addedLines = [0], linesLength = 0; - // get an array of how many char per lines are being added. - for (var i = 0; i < insertedText.length; i++) { - if (insertedText[i] === '\n') { - linesLength++; - addedLines[linesLength] = 0; - } - else { - addedLines[linesLength]++; - } - } - // for the first line copy the style from the current char position. - if (addedLines[0] > 0) { - this.insertCharStyleObject(cursorLoc.lineIndex, cursorLoc.charIndex, addedLines[0], copiedStyle); - copiedStyle = copiedStyle && copiedStyle.slice(addedLines[0] + 1); - } - linesLength && this.insertNewlineStyleObject( - cursorLoc.lineIndex, cursorLoc.charIndex + addedLines[0], linesLength); - for (var i = 1; i < linesLength; i++) { - if (addedLines[i] > 0) { - this.insertCharStyleObject(cursorLoc.lineIndex + i, 0, addedLines[i], copiedStyle); - } - else if (copiedStyle) { - // this test is required in order to close #6841 - // when a pasted buffer begins with a newline then - // this.styles[cursorLoc.lineIndex + i] and copiedStyle[0] - // may be undefined for some reason - if (this.styles[cursorLoc.lineIndex + i] && copiedStyle[0]) { - this.styles[cursorLoc.lineIndex + i][0] = copiedStyle[0]; - } - } - copiedStyle = copiedStyle && copiedStyle.slice(addedLines[i] + 1); - } - // we use i outside the loop to get it like linesLength - if (addedLines[i] > 0) { - this.insertCharStyleObject(cursorLoc.lineIndex + i, 0, addedLines[i], copiedStyle); - } - }, +//@ts-nocheck +/* _TO_SVG_START_ */ +(function (global) { + var fabric = global.fabric, toFixed = fabric.util.toFixed, multipleSpacesRegex = / +/g; + fabric.util.object.extend(fabric.Text.prototype, + /** @lends fabric.Text.prototype */ { + /** + * Returns SVG representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + _toSVG: function () { + var offsets = this._getSVGLeftTopOffsets(), textAndBg = this._getSVGTextAndBg(offsets.textTop, offsets.textLeft); + return this._wrapSVGTextAndBg(textAndBg); + }, + /** + * Returns svg representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toSVG: function (reviver) { + return this._createBaseSVGMarkup(this._toSVG(), { + reviver: reviver, + noStyle: true, + withShadow: true, + }); + }, + /** + * @private + */ + _getSVGLeftTopOffsets: function () { + return { + textLeft: -this.width / 2, + textTop: -this.height / 2, + lineTop: this.getHeightOfLine(0), + }; + }, + /** + * @private + */ + _wrapSVGTextAndBg: function (textAndBg) { + var noShadow = true, textDecoration = this.getSvgTextDecoration(this); + return [ + textAndBg.textBgRects.join(''), + '\t\t', + textAndBg.textSpans.join(''), + '\n', + ]; + }, + /** + * @private + * @param {Number} textTopOffset Text top offset + * @param {Number} textLeftOffset Text left offset + * @return {Object} + */ + _getSVGTextAndBg: function (textTopOffset, textLeftOffset) { + var textSpans = [], textBgRects = [], height = textTopOffset, lineOffset; + // bounding-box background + this._setSVGBg(textBgRects); + // text and text-background + for (var i = 0, len = this._textLines.length; i < len; i++) { + lineOffset = this._getLineLeftOffset(i); + if (this.direction === 'rtl') { + lineOffset += this.width; + } + if (this.textBackgroundColor || + this.styleHas('textBackgroundColor', i)) { + this._setSVGTextLineBg(textBgRects, i, textLeftOffset + lineOffset, height); + } + this._setSVGTextLineText(textSpans, i, textLeftOffset + lineOffset, height); + height += this.getHeightOfLine(i); + } + return { + textSpans: textSpans, + textBgRects: textBgRects, + }; + }, + /** + * @private + */ + _createTextCharSpan: function (_char, styleDecl, left, top) { + var shouldUseWhitespace = _char !== _char.trim() || _char.match(multipleSpacesRegex), styleProps = this.getSvgSpanStyles(styleDecl, shouldUseWhitespace), fillStyles = styleProps ? 'style="' + styleProps + '"' : '', dy = styleDecl.deltaY, dySpan = '', NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; + if (dy) { + dySpan = ' dy="' + toFixed(dy, NUM_FRACTION_DIGITS) + '" '; + } + return [ + '', + fabric.util.string.escapeXml(_char), + '', + ].join(''); + }, + _setSVGTextLineText: function (textSpans, lineIndex, textLeftOffset, textTopOffset) { + // set proper line offset + var lineHeight = this.getHeightOfLine(lineIndex), isJustify = this.textAlign.indexOf('justify') !== -1, actualStyle, nextStyle, charsToRender = '', charBox, style, boxWidth = 0, line = this._textLines[lineIndex], timeToRender; + textTopOffset += + (lineHeight * (1 - this._fontSizeFraction)) / this.lineHeight; + for (var i = 0, len = line.length - 1; i <= len; i++) { + timeToRender = i === len || this.charSpacing; + charsToRender += line[i]; + charBox = this.__charBounds[lineIndex][i]; + if (boxWidth === 0) { + textLeftOffset += charBox.kernedWidth - charBox.width; + boxWidth += charBox.width; + } + else { + boxWidth += charBox.kernedWidth; + } + if (isJustify && !timeToRender) { + if (this._reSpaceAndTab.test(line[i])) { + timeToRender = true; + } + } + if (!timeToRender) { + // if we have charSpacing, we render char by char + actualStyle = + actualStyle || this.getCompleteStyleDeclaration(lineIndex, i); + nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1); + timeToRender = fabric.util.hasStyleChanged(actualStyle, nextStyle, true); + } + if (timeToRender) { + style = this._getStyleDeclaration(lineIndex, i) || {}; + textSpans.push(this._createTextCharSpan(charsToRender, style, textLeftOffset, textTopOffset)); + charsToRender = ''; + actualStyle = nextStyle; + if (this.direction === 'rtl') { + textLeftOffset -= boxWidth; + } + else { + textLeftOffset += boxWidth; + } + boxWidth = 0; + } + } + }, + _pushTextBgRect: function (textBgRects, color, left, top, width, height) { + var NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; + textBgRects.push('\t\t\n'); + }, + _setSVGTextLineBg: function (textBgRects, i, leftOffset, textTopOffset) { + var line = this._textLines[i], heightOfLine = this.getHeightOfLine(i) / this.lineHeight, boxWidth = 0, boxStart = 0, charBox, currentColor, lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor'); + for (var j = 0, jlen = line.length; j < jlen; j++) { + charBox = this.__charBounds[i][j]; + currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor'); + if (currentColor !== lastColor) { + lastColor && + this._pushTextBgRect(textBgRects, lastColor, leftOffset + boxStart, textTopOffset, boxWidth, heightOfLine); + boxStart = charBox.left; + boxWidth = charBox.width; + lastColor = currentColor; + } + else { + boxWidth += charBox.kernedWidth; + } + } + currentColor && + this._pushTextBgRect(textBgRects, currentColor, leftOffset + boxStart, textTopOffset, boxWidth, heightOfLine); + }, + /** + * Adobe Illustrator (at least CS5) is unable to render rgba()-based fill values + * we work around it by "moving" alpha channel into opacity attribute and setting fill's alpha to 1 + * + * @private + * @param {*} value + * @return {String} + */ + _getFillAttributes: function (value) { + var fillColor = value && typeof value === 'string' ? new Color(value) : ''; + if (!fillColor || + !fillColor.getSource() || + fillColor.getAlpha() === 1) { + return 'fill="' + value + '"'; + } + return ('opacity="' + + fillColor.getAlpha() + + '" fill="' + + fillColor.setAlpha(1).toRgb() + + '"'); + }, + /** + * @private + */ + _getSVGLineTopOffset: function (lineIndex) { + var lineTopOffset = 0, lastHeight = 0; + for (var j = 0; j < lineIndex; j++) { + lineTopOffset += this.getHeightOfLine(j); + } + lastHeight = this.getHeightOfLine(j); + return { + lineTop: lineTopOffset, + offset: ((this._fontSizeMult - this._fontSizeFraction) * lastHeight) / + (this.lineHeight * this._fontSizeMult), + }; + }, + /** + * Returns styles-string for svg-export + * @param {Boolean} skipShadow a boolean to skip shadow filter output + * @return {String} + */ + getSvgStyles: function (skipShadow) { + var svgStyle = fabric.Object.prototype.getSvgStyles.call(this, skipShadow); + return svgStyle + ' white-space: pre;'; + }, + }); +})(typeof exports !== 'undefined' ? exports : window); +/* _TO_SVG_END_ */ +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}); + /** + * Textbox class, based on IText, allows the user to resize the text rectangle + * and wraps lines automatically. Textboxes have their Y scaling locked, the + * user can only change width. Height is adjusted automatically based on the + * wrapping of lines. + * @class fabric.Textbox + * @extends fabric.IText + * @mixes fabric.Observable + * @return {fabric.Textbox} thisArg + * @see {@link fabric.Textbox#initialize} for constructor definition + */ + fabric.Textbox = fabric.util.createClass(fabric.IText, fabric.Observable, { + /** + * Type of an object + * @type String + * @default + */ + type: 'textbox', + /** + * Minimum width of textbox, in pixels. + * @type Number + * @default + */ + minWidth: 20, + /** + * Minimum calculated width of a textbox, in pixels. + * fixed to 2 so that an empty textbox cannot go to 0 + * and is still selectable without text. + * @type Number + * @default + */ + dynamicMinWidth: 2, + /** + * Cached array of text wrapping. + * @type Array + */ + __cachedLines: null, + /** + * Override standard Object class values + */ + lockScalingFlip: true, + /** + * Override standard Object class values + * Textbox needs this on false + */ + noScaleCache: false, + /** + * Properties which when set cause object to change dimensions + * @type Object + * @private + */ + _dimensionAffectingProps: fabric.Text.prototype._dimensionAffectingProps.concat('width'), + /** + * Use this regular expression to split strings in breakable lines + * @private + */ + _wordJoiners: /[ \t\r]/, + /** + * Use this boolean property in order to split strings that have no white space concept. + * this is a cheap way to help with chinese/japanese + * @type Boolean + * @since 2.6.0 + */ + splitByGrapheme: false, + /** + * Unlike superclass's version of this function, Textbox does not update + * its width. + * @private + * @override + */ + initDimensions: function () { + if (this.__skipDimension) { + return; + } + this.isEditing && this.initDelayedCursor(); + this.clearContextTop(); + this._clearCache(); + // clear dynamicMinWidth as it will be different after we re-wrap line + this.dynamicMinWidth = 0; + // wrap lines + this._styleMap = this._generateStyleMap(this._splitText()); + // if after wrapping, the width is smaller than dynamicMinWidth, change the width and re-wrap + if (this.dynamicMinWidth > this.width) { + this._set('width', this.dynamicMinWidth); + } + if (this.textAlign.indexOf('justify') !== -1) { + // once text is measured we need to make space fatter to make justified text. + this.enlargeSpaces(); + } + // clear cache and re-calculate height + this.height = this.calcTextHeight(); + this.saveState({ propertySet: '_dimensionAffectingProps' }); + }, + /** + * Generate an object that translates the style object so that it is + * broken up by visual lines (new lines and automatic wrapping). + * The original text styles object is broken up by actual lines (new lines only), + * which is only sufficient for Text / IText + * @private + */ + _generateStyleMap: function (textInfo) { + var realLineCount = 0, realLineCharCount = 0, charCount = 0, map = {}; + for (var i = 0; i < textInfo.graphemeLines.length; i++) { + if (textInfo.graphemeText[charCount] === '\n' && i > 0) { + realLineCharCount = 0; + charCount++; + realLineCount++; + } + else if (!this.splitByGrapheme && + this._reSpaceAndTab.test(textInfo.graphemeText[charCount]) && + i > 0) { + // this case deals with space's that are removed from end of lines when wrapping + realLineCharCount++; + charCount++; + } + map[i] = { line: realLineCount, offset: realLineCharCount }; + charCount += textInfo.graphemeLines[i].length; + realLineCharCount += textInfo.graphemeLines[i].length; + } + return map; + }, + /** + * Returns true if object has a style property or has it on a specified line + * @param {Number} lineIndex + * @return {Boolean} + */ + styleHas: function (property, lineIndex) { + if (this._styleMap && !this.isWrapping) { + var map = this._styleMap[lineIndex]; + if (map) { + lineIndex = map.line; + } + } + return fabric.Text.prototype.styleHas.call(this, property, lineIndex); + }, + /** + * Returns true if object has no styling or no styling in a line + * @param {Number} lineIndex , lineIndex is on wrapped lines. + * @return {Boolean} + */ + isEmptyStyles: function (lineIndex) { + if (!this.styles) { + return true; + } + var offset = 0, nextLineIndex = lineIndex + 1, nextOffset, obj, shouldLimit = false, map = this._styleMap[lineIndex], mapNextLine = this._styleMap[lineIndex + 1]; + if (map) { + lineIndex = map.line; + offset = map.offset; + } + if (mapNextLine) { + nextLineIndex = mapNextLine.line; + shouldLimit = nextLineIndex === lineIndex; + nextOffset = mapNextLine.offset; + } + obj = + typeof lineIndex === 'undefined' + ? this.styles + : { line: this.styles[lineIndex] }; + for (var p1 in obj) { + for (var p2 in obj[p1]) { + if (p2 >= offset && (!shouldLimit || p2 < nextOffset)) { + // eslint-disable-next-line no-unused-vars + for (var p3 in obj[p1][p2]) { + return false; + } + } + } + } + return true; + }, + /** + * @param {Number} lineIndex + * @param {Number} charIndex + * @private + */ + _getStyleDeclaration: function (lineIndex, charIndex) { + if (this._styleMap && !this.isWrapping) { + var map = this._styleMap[lineIndex]; + if (!map) { + return null; + } + lineIndex = map.line; + charIndex = map.offset + charIndex; + } + return this.callSuper('_getStyleDeclaration', lineIndex, charIndex); + }, + /** + * @param {Number} lineIndex + * @param {Number} charIndex + * @param {Object} style + * @private + */ + _setStyleDeclaration: function (lineIndex, charIndex, style) { + var map = this._styleMap[lineIndex]; + lineIndex = map.line; + charIndex = map.offset + charIndex; + this.styles[lineIndex][charIndex] = style; + }, + /** + * @param {Number} lineIndex + * @param {Number} charIndex + * @private + */ + _deleteStyleDeclaration: function (lineIndex, charIndex) { + var map = this._styleMap[lineIndex]; + lineIndex = map.line; + charIndex = map.offset + charIndex; + delete this.styles[lineIndex][charIndex]; + }, + /** + * probably broken need a fix + * Returns the real style line that correspond to the wrapped lineIndex line + * Used just to verify if the line does exist or not. + * @param {Number} lineIndex + * @returns {Boolean} if the line exists or not + * @private + */ + _getLineStyle: function (lineIndex) { + var map = this._styleMap[lineIndex]; + return !!this.styles[map.line]; + }, + /** + * Set the line style to an empty object so that is initialized + * @param {Number} lineIndex + * @param {Object} style + * @private + */ + _setLineStyle: function (lineIndex) { + var map = this._styleMap[lineIndex]; + this.styles[map.line] = {}; + }, + /** + * Wraps text using the 'width' property of Textbox. First this function + * splits text on newlines, so we preserve newlines entered by the user. + * Then it wraps each line using the width of the Textbox by calling + * _wrapLine(). + * @param {Array} lines The string array of text that is split into lines + * @param {Number} desiredWidth width you want to wrap to + * @returns {Array} Array of lines + */ + _wrapText: function (lines, desiredWidth) { + var wrapped = [], i; + this.isWrapping = true; + for (i = 0; i < lines.length; i++) { + wrapped.push.apply(wrapped, this._wrapLine(lines[i], i, desiredWidth)); + } + this.isWrapping = false; + return wrapped; + }, + /** + * Helper function to measure a string of text, given its lineIndex and charIndex offset + * It gets called when charBounds are not available yet. + * Override if necessary + * Use with {@link fabric.Textbox#wordSplit} + * + * @param {CanvasRenderingContext2D} ctx + * @param {String} text + * @param {number} lineIndex + * @param {number} charOffset + * @returns {number} + */ + _measureWord: function (word, lineIndex, charOffset) { + var width = 0, prevGrapheme, skipLeft = true; + charOffset = charOffset || 0; + for (var i = 0, len = word.length; i < len; i++) { + var box = this._getGraphemeBox(word[i], lineIndex, i + charOffset, prevGrapheme, skipLeft); + width += box.kernedWidth; + prevGrapheme = word[i]; + } + return width; + }, + /** + * Override this method to customize word splitting + * Use with {@link fabric.Textbox#_measureWord} + * @param {string} value + * @returns {string[]} array of words + */ + wordSplit: function (value) { + return value.split(this._wordJoiners); + }, + /** + * Wraps a line of text using the width of the Textbox and a context. + * @param {Array} line The grapheme array that represent the line + * @param {Number} lineIndex + * @param {Number} desiredWidth width you want to wrap the line to + * @param {Number} reservedSpace space to remove from wrapping for custom functionalities + * @returns {Array} Array of line(s) into which the given text is wrapped + * to. + */ + _wrapLine: function (_line, lineIndex, desiredWidth, reservedSpace) { + var lineWidth = 0, splitByGrapheme = this.splitByGrapheme, graphemeLines = [], line = [], + // spaces in different languages? + words = splitByGrapheme + ? this.graphemeSplit(_line) + : this.wordSplit(_line), word = '', offset = 0, infix = splitByGrapheme ? '' : ' ', wordWidth = 0, infixWidth = 0, largestWordWidth = 0, lineJustStarted = true, additionalSpace = this._getWidthOfCharSpacing(), reservedSpace = reservedSpace || 0; + // fix a difference between split and graphemeSplit + if (words.length === 0) { + words.push([]); + } + desiredWidth -= reservedSpace; + // measure words + var data = words.map(function (word) { + // if using splitByGrapheme words are already in graphemes. + word = splitByGrapheme ? word : this.graphemeSplit(word); + var width = this._measureWord(word, lineIndex, offset); + largestWordWidth = Math.max(width, largestWordWidth); + offset += word.length + 1; + return { word: word, width: width }; + }.bind(this)); + var maxWidth = Math.max(desiredWidth, largestWordWidth, this.dynamicMinWidth); + // layout words + offset = 0; + for (var i = 0; i < words.length; i++) { + word = data[i].word; + wordWidth = data[i].width; + offset += word.length; + lineWidth += infixWidth + wordWidth - additionalSpace; + if (lineWidth > maxWidth && !lineJustStarted) { + graphemeLines.push(line); + line = []; + lineWidth = wordWidth; + lineJustStarted = true; + } + else { + lineWidth += additionalSpace; + } + if (!lineJustStarted && !splitByGrapheme) { + line.push(infix); + } + line = line.concat(word); + infixWidth = splitByGrapheme + ? 0 + : this._measureWord([infix], lineIndex, offset); + offset++; + lineJustStarted = false; + } + i && graphemeLines.push(line); + if (largestWordWidth + reservedSpace > this.dynamicMinWidth) { + this.dynamicMinWidth = + largestWordWidth - additionalSpace + reservedSpace; + } + return graphemeLines; + }, + /** + * Detect if the text line is ended with an hard break + * text and itext do not have wrapping, return false + * @param {Number} lineIndex text to split + * @return {Boolean} + */ + isEndOfWrapping: function (lineIndex) { + if (!this._styleMap[lineIndex + 1]) { + // is last line, return true; + return true; + } + if (this._styleMap[lineIndex + 1].line !== this._styleMap[lineIndex].line) { + // this is last line before a line break, return true; + return true; + } + return false; + }, + /** + * Detect if a line has a linebreak and so we need to account for it when moving + * and counting style. + * @return Number + */ + missingNewlineOffset: function (lineIndex) { + if (this.splitByGrapheme) { + return this.isEndOfWrapping(lineIndex) ? 1 : 0; + } + return 1; + }, + /** + * Gets lines of text to render in the Textbox. This function calculates + * text wrapping on the fly every time it is called. + * @param {String} text text to split + * @returns {Array} Array of lines in the Textbox. + * @override + */ + _splitTextIntoLines: function (text) { + var newText = fabric.Text.prototype._splitTextIntoLines.call(this, text), graphemeLines = this._wrapText(newText.lines, this.width), lines = new Array(graphemeLines.length); + for (var i = 0; i < graphemeLines.length; i++) { + lines[i] = graphemeLines[i].join(''); + } + newText.lines = lines; + newText.graphemeLines = graphemeLines; + return newText; + }, + getMinWidth: function () { + return Math.max(this.minWidth, this.dynamicMinWidth); + }, + _removeExtraneousStyles: function () { + var linesToKeep = {}; + for (var prop in this._styleMap) { + if (this._textLines[prop]) { + linesToKeep[this._styleMap[prop].line] = 1; + } + } + for (var prop in this.styles) { + if (!linesToKeep[prop]) { + delete this.styles[prop]; + } + } + }, + /** + * Returns object representation of an instance + * @method toObject + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function (propertiesToInclude) { + return this.callSuper('toObject', ['minWidth', 'splitByGrapheme'].concat(propertiesToInclude)); + }, + }); /** - * Set the selectionStart and selectionEnd according to the new position of cursor - * mimic the key - mouse navigation when shift is pressed. - */ - setSelectionStartEndWithShift: function(start, end, newSelection) { - if (newSelection <= start) { - if (end === start) { - this._selectionDirection = 'left'; - } - else if (this._selectionDirection === 'right') { - this._selectionDirection = 'left'; - this.selectionEnd = start; - } - this.selectionStart = newSelection; - } - else if (newSelection > start && newSelection < end) { - if (this._selectionDirection === 'right') { - this.selectionEnd = newSelection; - } - else { - this.selectionStart = newSelection; - } - } - else { - // newSelection is > selection start and end - if (end === start) { - this._selectionDirection = 'right'; - } - else if (this._selectionDirection === 'left') { - this._selectionDirection = 'right'; - this.selectionStart = end; - } - this.selectionEnd = newSelection; - } - }, - - setSelectionInBoundaries: function() { - var length = this.text.length; - if (this.selectionStart > length) { - this.selectionStart = length; - } - else if (this.selectionStart < 0) { - this.selectionStart = 0; - } - if (this.selectionEnd > length) { - this.selectionEnd = length; - } - else if (this.selectionEnd < 0) { - this.selectionEnd = 0; - } - } - }); -})(); - - -fabric.util.object.extend(fabric.IText.prototype, /** @lends fabric.IText.prototype */ { - /** - * Initializes "dbclick" event handler - */ - initDoubleClickSimulation: function() { - - // for double click - this.__lastClickTime = +new Date(); - - // for triple click - this.__lastLastClickTime = +new Date(); - - this.__lastPointer = { }; - - this.on('mousedown', this.onMouseDown); - }, - - /** - * Default event handler to simulate triple click - * @private - */ - onMouseDown: function(options) { - if (!this.canvas) { - return; - } - this.__newClickTime = +new Date(); - var newPointer = options.pointer; - if (this.isTripleClick(newPointer)) { - this.fire('tripleclick', options); - this._stopEvent(options.e); - } - this.__lastLastClickTime = this.__lastClickTime; - this.__lastClickTime = this.__newClickTime; - this.__lastPointer = newPointer; - this.__lastIsEditing = this.isEditing; - this.__lastSelected = this.selected; - }, - - isTripleClick: function(newPointer) { - return this.__newClickTime - this.__lastClickTime < 500 && - this.__lastClickTime - this.__lastLastClickTime < 500 && - this.__lastPointer.x === newPointer.x && - this.__lastPointer.y === newPointer.y; - }, - - /** - * @private - */ - _stopEvent: function(e) { - e.preventDefault && e.preventDefault(); - e.stopPropagation && e.stopPropagation(); - }, - - /** - * Initializes event handlers related to cursor or selection - */ - initCursorSelectionHandlers: function() { - this.initMousedownHandler(); - this.initMouseupHandler(); - this.initClicks(); - }, - - /** - * Default handler for double click, select a word - */ - doubleClickHandler: function(options) { - if (!this.isEditing) { - return; - } - this.selectWord(this.getSelectionStartFromPointer(options.e)); - }, - - /** - * Default handler for triple click, select a line - */ - tripleClickHandler: function(options) { - if (!this.isEditing) { - return; - } - this.selectLine(this.getSelectionStartFromPointer(options.e)); - }, - - /** - * Initializes double and triple click event handlers - */ - initClicks: function() { - this.on('mousedblclick', this.doubleClickHandler); - this.on('tripleclick', this.tripleClickHandler); - }, - - /** - * Default event handler for the basic functionalities needed on _mouseDown - * can be overridden to do something different. - * Scope of this implementation is: find the click position, set selectionStart - * find selectionEnd, initialize the drawing of either cursor or selection area - * initializing a mousedDown on a text area will cancel fabricjs knowledge of - * current compositionMode. It will be set to false. - */ - _mouseDownHandler: function(options) { - if (!this.canvas || !this.editable || (options.e.button && options.e.button !== 1)) { - return; - } - - this.__isMousedown = true; - - if (this.selected) { - this.inCompositionMode = false; - this.setCursorByClick(options.e); - } - - if (this.isEditing) { - this.__selectionStartOnMouseDown = this.selectionStart; - if (this.selectionStart === this.selectionEnd) { - this.abortCursorAnimation(); - } - this.renderCursorOrSelection(); - } - }, - - /** - * Default event handler for the basic functionalities needed on mousedown:before - * can be overridden to do something different. - * Scope of this implementation is: verify the object is already selected when mousing down - */ - _mouseDownHandlerBefore: function(options) { - if (!this.canvas || !this.editable || (options.e.button && options.e.button !== 1)) { - return; - } - // we want to avoid that an object that was selected and then becomes unselectable, - // may trigger editing mode in some way. - this.selected = this === this.canvas._activeObject; - }, - - /** - * Initializes "mousedown" event handler - */ - initMousedownHandler: function() { - this.on('mousedown', this._mouseDownHandler); - this.on('mousedown:before', this._mouseDownHandlerBefore); - }, - - /** - * Initializes "mouseup" event handler - */ - initMouseupHandler: function() { - this.on('mouseup', this.mouseUpHandler); - }, - - /** - * standard handler for mouse up, overridable - * @private - */ - mouseUpHandler: function(options) { - this.__isMousedown = false; - if (!this.editable || this.group || - (options.transform && options.transform.actionPerformed) || - (options.e.button && options.e.button !== 1)) { - return; - } - - if (this.canvas) { - var currentActive = this.canvas._activeObject; - if (currentActive && currentActive !== this) { - // avoid running this logic when there is an active object - // this because is possible with shift click and fast clicks, - // to rapidly deselect and reselect this object and trigger an enterEdit - return; - } - } - - if (this.__lastSelected && !this.__corner) { - this.selected = false; - this.__lastSelected = false; - this.enterEditing(options.e); - if (this.selectionStart === this.selectionEnd) { - this.initDelayedCursor(true); - } - else { - this.renderCursorOrSelection(); - } - } - else { - this.selected = true; - } - }, - - /** - * Changes cursor location in a text depending on passed pointer (x/y) object - * @param {Event} e Event object - */ - setCursorByClick: function(e) { - var newSelection = this.getSelectionStartFromPointer(e), - start = this.selectionStart, end = this.selectionEnd; - if (e.shiftKey) { - this.setSelectionStartEndWithShift(start, end, newSelection); - } - else { - this.selectionStart = newSelection; - this.selectionEnd = newSelection; - } - if (this.isEditing) { - this._fireSelectionChanged(); - this._updateTextarea(); - } - }, - - /** - * Returns index of a character corresponding to where an object was clicked - * @param {Event} e Event object - * @return {Number} Index of a character - */ - getSelectionStartFromPointer: function(e) { - var mouseOffset = this.getLocalPointer(e), - prevWidth = 0, - width = 0, - height = 0, - charIndex = 0, - lineIndex = 0, - lineLeftOffset, - line; - for (var i = 0, len = this._textLines.length; i < len; i++) { - if (height <= mouseOffset.y) { - height += this.getHeightOfLine(i) * this.scaleY; - lineIndex = i; - if (i > 0) { - charIndex += this._textLines[i - 1].length + this.missingNewlineOffset(i - 1); - } - } - else { - break; - } - } - lineLeftOffset = this._getLineLeftOffset(lineIndex); - width = lineLeftOffset * this.scaleX; - line = this._textLines[lineIndex]; - // handling of RTL: in order to get things work correctly, - // we assume RTL writing is mirrored compared to LTR writing. - // so in position detection we mirror the X offset, and when is time - // of rendering it, we mirror it again. - if (this.direction === 'rtl') { - mouseOffset.x = this.width * this.scaleX - mouseOffset.x + width; - } - for (var j = 0, jlen = line.length; j < jlen; j++) { - prevWidth = width; - // i removed something about flipX here, check. - width += this.__charBounds[lineIndex][j].kernedWidth * this.scaleX; - if (width <= mouseOffset.x) { - charIndex++; - } - else { - break; - } - } - return this._getNewSelectionStartFromOffset(mouseOffset, prevWidth, width, charIndex, jlen); - }, - - /** - * @private - */ - _getNewSelectionStartFromOffset: function(mouseOffset, prevWidth, width, index, jlen) { - // we need Math.abs because when width is after the last char, the offset is given as 1, while is 0 - var distanceBtwLastCharAndCursor = mouseOffset.x - prevWidth, - distanceBtwNextCharAndCursor = width - mouseOffset.x, - offset = distanceBtwNextCharAndCursor > distanceBtwLastCharAndCursor || - distanceBtwNextCharAndCursor < 0 ? 0 : 1, - newSelectionStart = index + offset; - // if object is horizontally flipped, mirror cursor location from the end - if (this.flipX) { - newSelectionStart = jlen - newSelectionStart; - } - - if (newSelectionStart > this._text.length) { - newSelectionStart = this._text.length; - } - - return newSelectionStart; - } -}); - - -fabric.util.object.extend(fabric.IText.prototype, /** @lends fabric.IText.prototype */ { - - /** - * Initializes hidden textarea (needed to bring up keyboard in iOS) - */ - initHiddenTextarea: function() { - this.hiddenTextarea = fabric.document.createElement('textarea'); - this.hiddenTextarea.setAttribute('autocapitalize', 'off'); - this.hiddenTextarea.setAttribute('autocorrect', 'off'); - this.hiddenTextarea.setAttribute('autocomplete', 'off'); - this.hiddenTextarea.setAttribute('spellcheck', 'false'); - this.hiddenTextarea.setAttribute('data-fabric-hiddentextarea', ''); - this.hiddenTextarea.setAttribute('wrap', 'off'); - var style = this._calcTextareaPosition(); - // line-height: 1px; was removed from the style to fix this: - // https://bugs.chromium.org/p/chromium/issues/detail?id=870966 - this.hiddenTextarea.style.cssText = 'position: absolute; top: ' + style.top + - '; left: ' + style.left + '; z-index: -999; opacity: 0; width: 1px; height: 1px; font-size: 1px;' + - ' paddingｰtop: ' + style.fontSize + ';'; - - if (this.hiddenTextareaContainer) { - this.hiddenTextareaContainer.appendChild(this.hiddenTextarea); - } - else { - fabric.document.body.appendChild(this.hiddenTextarea); - } - - fabric.util.addListener(this.hiddenTextarea, 'keydown', this.onKeyDown.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'keyup', this.onKeyUp.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'input', this.onInput.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'copy', this.copy.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'cut', this.copy.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'paste', this.paste.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'compositionstart', this.onCompositionStart.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'compositionupdate', this.onCompositionUpdate.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'compositionend', this.onCompositionEnd.bind(this)); - - if (!this._clickHandlerInitialized && this.canvas) { - fabric.util.addListener(this.canvas.upperCanvasEl, 'click', this.onClick.bind(this)); - this._clickHandlerInitialized = true; - } - }, - - /** - * For functionalities on keyDown - * Map a special key to a function of the instance/prototype - * If you need different behaviour for ESC or TAB or arrows, you have to change - * this map setting the name of a function that you build on the fabric.Itext or - * your prototype. - * the map change will affect all Instances unless you need for only some text Instances - * in that case you have to clone this object and assign your Instance. - * this.keysMap = fabric.util.object.clone(this.keysMap); - * The function must be in fabric.Itext.prototype.myFunction And will receive event as args[0] - */ - keysMap: { - 9: 'exitEditing', - 27: 'exitEditing', - 33: 'moveCursorUp', - 34: 'moveCursorDown', - 35: 'moveCursorRight', - 36: 'moveCursorLeft', - 37: 'moveCursorLeft', - 38: 'moveCursorUp', - 39: 'moveCursorRight', - 40: 'moveCursorDown', - }, - - keysMapRtl: { - 9: 'exitEditing', - 27: 'exitEditing', - 33: 'moveCursorUp', - 34: 'moveCursorDown', - 35: 'moveCursorLeft', - 36: 'moveCursorRight', - 37: 'moveCursorRight', - 38: 'moveCursorUp', - 39: 'moveCursorLeft', - 40: 'moveCursorDown', - }, - - /** - * For functionalities on keyUp + ctrl || cmd - */ - ctrlKeysMapUp: { - 67: 'copy', - 88: 'cut' - }, - - /** - * For functionalities on keyDown + ctrl || cmd - */ - ctrlKeysMapDown: { - 65: 'selectAll' - }, - - onClick: function() { - // No need to trigger click event here, focus is enough to have the keyboard appear on Android - this.hiddenTextarea && this.hiddenTextarea.focus(); - }, - - /** - * Handles keydown event - * only used for arrows and combination of modifier keys. - * @param {Event} e Event object - */ - onKeyDown: function(e) { - if (!this.isEditing) { - return; - } - var keyMap = this.direction === 'rtl' ? this.keysMapRtl : this.keysMap; - if (e.keyCode in keyMap) { - this[keyMap[e.keyCode]](e); - } - else if ((e.keyCode in this.ctrlKeysMapDown) && (e.ctrlKey || e.metaKey)) { - this[this.ctrlKeysMapDown[e.keyCode]](e); - } - else { - return; - } - e.stopImmediatePropagation(); - e.preventDefault(); - if (e.keyCode >= 33 && e.keyCode <= 40) { - // if i press an arrow key just update selection - this.inCompositionMode = false; - this.clearContextTop(); - this.renderCursorOrSelection(); - } - else { - this.canvas && this.canvas.requestRenderAll(); - } - }, - - /** - * Handles keyup event - * We handle KeyUp because ie11 and edge have difficulties copy/pasting - * if a copy/cut event fired, keyup is dismissed - * @param {Event} e Event object - */ - onKeyUp: function(e) { - if (!this.isEditing || this._copyDone || this.inCompositionMode) { - this._copyDone = false; - return; - } - if ((e.keyCode in this.ctrlKeysMapUp) && (e.ctrlKey || e.metaKey)) { - this[this.ctrlKeysMapUp[e.keyCode]](e); - } - else { - return; - } - e.stopImmediatePropagation(); - e.preventDefault(); - this.canvas && this.canvas.requestRenderAll(); - }, - - /** - * Handles onInput event - * @param {Event} e Event object - */ - onInput: function(e) { - var fromPaste = this.fromPaste; - this.fromPaste = false; - e && e.stopPropagation(); - if (!this.isEditing) { - return; - } - // decisions about style changes. - var nextText = this._splitTextIntoLines(this.hiddenTextarea.value).graphemeText, - charCount = this._text.length, - nextCharCount = nextText.length, - removedText, insertedText, - charDiff = nextCharCount - charCount, - selectionStart = this.selectionStart, selectionEnd = this.selectionEnd, - selection = selectionStart !== selectionEnd, - copiedStyle, removeFrom, removeTo; - if (this.hiddenTextarea.value === '') { - this.styles = { }; - this.updateFromTextArea(); - this.fire('changed'); - if (this.canvas) { - this.canvas.fire('text:changed', { target: this }); - this.canvas.requestRenderAll(); - } - return; - } - - var textareaSelection = this.fromStringToGraphemeSelection( - this.hiddenTextarea.selectionStart, - this.hiddenTextarea.selectionEnd, - this.hiddenTextarea.value - ); - var backDelete = selectionStart > textareaSelection.selectionStart; - - if (selection) { - removedText = this._text.slice(selectionStart, selectionEnd); - charDiff += selectionEnd - selectionStart; - } - else if (nextCharCount < charCount) { - if (backDelete) { - removedText = this._text.slice(selectionEnd + charDiff, selectionEnd); - } - else { - removedText = this._text.slice(selectionStart, selectionStart - charDiff); - } - } - insertedText = nextText.slice(textareaSelection.selectionEnd - charDiff, textareaSelection.selectionEnd); - if (removedText && removedText.length) { - if (insertedText.length) { - // let's copy some style before deleting. - // we want to copy the style before the cursor OR the style at the cursor if selection - // is bigger than 0. - copiedStyle = this.getSelectionStyles(selectionStart, selectionStart + 1, false); - // now duplicate the style one for each inserted text. - copiedStyle = insertedText.map(function() { - // this return an array of references, but that is fine since we are - // copying the style later. - return copiedStyle[0]; - }); - } - if (selection) { - removeFrom = selectionStart; - removeTo = selectionEnd; - } - else if (backDelete) { - // detect differences between forwardDelete and backDelete - removeFrom = selectionEnd - removedText.length; - removeTo = selectionEnd; - } - else { - removeFrom = selectionEnd; - removeTo = selectionEnd + removedText.length; - } - this.removeStyleFromTo(removeFrom, removeTo); - } - if (insertedText.length) { - if (fromPaste && insertedText.join('') === fabric.copiedText && !fabric.disableStyleCopyPaste) { - copiedStyle = fabric.copiedTextStyle; - } - this.insertNewStyleBlock(insertedText, selectionStart, copiedStyle); - } - this.updateFromTextArea(); - this.fire('changed'); - if (this.canvas) { - this.canvas.fire('text:changed', { target: this }); - this.canvas.requestRenderAll(); - } - }, - /** - * Composition start - */ - onCompositionStart: function() { - this.inCompositionMode = true; - }, - - /** - * Composition end - */ - onCompositionEnd: function() { - this.inCompositionMode = false; - }, - - // /** - // * Composition update - // */ - onCompositionUpdate: function(e) { - this.compositionStart = e.target.selectionStart; - this.compositionEnd = e.target.selectionEnd; - this.updateTextareaPosition(); - }, - - /** - * Copies selected text - * @param {Event} e Event object - */ - copy: function() { - if (this.selectionStart === this.selectionEnd) { - //do not cut-copy if no selection - return; - } - - fabric.copiedText = this.getSelectedText(); - if (!fabric.disableStyleCopyPaste) { - fabric.copiedTextStyle = this.getSelectionStyles(this.selectionStart, this.selectionEnd, true); - } - else { - fabric.copiedTextStyle = null; - } - this._copyDone = true; - }, - - /** - * Pastes text - * @param {Event} e Event object - */ - paste: function() { - this.fromPaste = true; - }, - - /** - * @private - * @param {Event} e Event object - * @return {Object} Clipboard data object - */ - _getClipboardData: function(e) { - return (e && e.clipboardData) || fabric.window.clipboardData; - }, - - /** - * Finds the width in pixels before the cursor on the same line - * @private - * @param {Number} lineIndex - * @param {Number} charIndex - * @return {Number} widthBeforeCursor width before cursor - */ - _getWidthBeforeCursor: function(lineIndex, charIndex) { - var widthBeforeCursor = this._getLineLeftOffset(lineIndex), bound; - - if (charIndex > 0) { - bound = this.__charBounds[lineIndex][charIndex - 1]; - widthBeforeCursor += bound.left + bound.width; - } - return widthBeforeCursor; - }, - - /** - * Gets start offset of a selection - * @param {Event} e Event object - * @param {Boolean} isRight - * @return {Number} - */ - getDownCursorOffset: function(e, isRight) { - var selectionProp = this._getSelectionForOffset(e, isRight), - cursorLocation = this.get2DCursorLocation(selectionProp), - lineIndex = cursorLocation.lineIndex; - // if on last line, down cursor goes to end of line - if (lineIndex === this._textLines.length - 1 || e.metaKey || e.keyCode === 34) { - // move to the end of a text - return this._text.length - selectionProp; - } - var charIndex = cursorLocation.charIndex, - widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex), - indexOnOtherLine = this._getIndexOnLine(lineIndex + 1, widthBeforeCursor), - textAfterCursor = this._textLines[lineIndex].slice(charIndex); - return textAfterCursor.length + indexOnOtherLine + 1 + this.missingNewlineOffset(lineIndex); - }, - - /** - * private - * Helps finding if the offset should be counted from Start or End - * @param {Event} e Event object - * @param {Boolean} isRight - * @return {Number} - */ - _getSelectionForOffset: function(e, isRight) { - if (e.shiftKey && this.selectionStart !== this.selectionEnd && isRight) { - return this.selectionEnd; - } - else { - return this.selectionStart; - } - }, - - /** - * @param {Event} e Event object - * @param {Boolean} isRight - * @return {Number} - */ - getUpCursorOffset: function(e, isRight) { - var selectionProp = this._getSelectionForOffset(e, isRight), - cursorLocation = this.get2DCursorLocation(selectionProp), - lineIndex = cursorLocation.lineIndex; - if (lineIndex === 0 || e.metaKey || e.keyCode === 33) { - // if on first line, up cursor goes to start of line - return -selectionProp; - } - var charIndex = cursorLocation.charIndex, - widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex), - indexOnOtherLine = this._getIndexOnLine(lineIndex - 1, widthBeforeCursor), - textBeforeCursor = this._textLines[lineIndex].slice(0, charIndex), - missingNewlineOffset = this.missingNewlineOffset(lineIndex - 1); - // return a negative offset - return -this._textLines[lineIndex - 1].length - + indexOnOtherLine - textBeforeCursor.length + (1 - missingNewlineOffset); - }, - - /** - * for a given width it founds the matching character. - * @private - */ - _getIndexOnLine: function(lineIndex, width) { - - var line = this._textLines[lineIndex], - lineLeftOffset = this._getLineLeftOffset(lineIndex), - widthOfCharsOnLine = lineLeftOffset, - indexOnLine = 0, charWidth, foundMatch; - - for (var j = 0, jlen = line.length; j < jlen; j++) { - charWidth = this.__charBounds[lineIndex][j].width; - widthOfCharsOnLine += charWidth; - if (widthOfCharsOnLine > width) { - foundMatch = true; - var leftEdge = widthOfCharsOnLine - charWidth, - rightEdge = widthOfCharsOnLine, - offsetFromLeftEdge = Math.abs(leftEdge - width), - offsetFromRightEdge = Math.abs(rightEdge - width); - - indexOnLine = offsetFromRightEdge < offsetFromLeftEdge ? j : (j - 1); - break; - } - } + * Returns fabric.Textbox instance from an object representation + * @static + * @memberOf fabric.Textbox + * @param {Object} object Object to create an instance from + * @returns {Promise} + */ + fabric.Textbox.fromObject = function (object) { + var styles = fabric.util.stylesFromArray(object.styles, object.text); + //copy object to prevent mutation + var objCopy = Object.assign({}, object, { styles: styles }); + return fabric.Object._fromObject(fabric.Textbox, objCopy, { + extraParam: 'text', + }); + }; +})(typeof exports !== 'undefined' ? exports : window); - // reached end - if (!foundMatch) { - indexOnLine = line.length - 1; +//@ts-nocheck +/** + * Render a round control, as per fabric features. + * This function is written to respect object properties like transparentCorners, cornerSize + * cornerColor, cornerStrokeColor + * plus the addition of offsetY and offsetX. + * @param {CanvasRenderingContext2D} ctx context to render on + * @param {Number} left x coordinate where the control center should be + * @param {Number} top y coordinate where the control center should be + * @param {Object} styleOverride override for fabric.Object controls style + * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls + */ +function renderCircleControl(ctx, left, top, styleOverride, fabricObject) { + styleOverride = styleOverride || {}; + var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize, ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize, transparentCorners = typeof styleOverride.transparentCorners !== 'undefined' + ? styleOverride.transparentCorners + : fabricObject.transparentCorners, methodName = transparentCorners ? 'stroke' : 'fill', stroke = !transparentCorners && + (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor), myLeft = left, myTop = top, size; + ctx.save(); + ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor; + ctx.strokeStyle = + styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor; + // as soon as fabric react v5, remove ie11, use proper ellipse code. + if (xSize > ySize) { + size = xSize; + ctx.scale(1.0, ySize / xSize); + myTop = (top * xSize) / ySize; } - - return indexOnLine; - }, - - - /** - * Moves cursor down - * @param {Event} e Event object - */ - moveCursorDown: function(e) { - if (this.selectionStart >= this._text.length && this.selectionEnd >= this._text.length) { - return; - } - this._moveCursorUpOrDown('Down', e); - }, - - /** - * Moves cursor up - * @param {Event} e Event object - */ - moveCursorUp: function(e) { - if (this.selectionStart === 0 && this.selectionEnd === 0) { - return; - } - this._moveCursorUpOrDown('Up', e); - }, - - /** - * Moves cursor up or down, fires the events - * @param {String} direction 'Up' or 'Down' - * @param {Event} e Event object - */ - _moveCursorUpOrDown: function(direction, e) { - // getUpCursorOffset - // getDownCursorOffset - var action = 'get' + direction + 'CursorOffset', - offset = this[action](e, this._selectionDirection === 'right'); - if (e.shiftKey) { - this.moveCursorWithShift(offset); + else if (ySize > xSize) { + size = ySize; + ctx.scale(xSize / ySize, 1.0); + myLeft = (left * ySize) / xSize; } else { - this.moveCursorWithoutShift(offset); + size = xSize; + } + // this is still wrong + ctx.lineWidth = 1; + ctx.beginPath(); + ctx.arc(myLeft, myTop, size / 2, 0, 2 * Math.PI, false); + ctx[methodName](); + if (stroke) { + ctx.stroke(); } - if (offset !== 0) { - this.setSelectionInBoundaries(); - this.abortCursorAnimation(); - this._currentCursorOpacity = 1; - this.initDelayedCursor(); - this._fireSelectionChanged(); - this._updateTextarea(); + ctx.restore(); +} +/** + * Render a square control, as per fabric features. + * This function is written to respect object properties like transparentCorners, cornerSize + * cornerColor, cornerStrokeColor + * plus the addition of offsetY and offsetX. + * @param {CanvasRenderingContext2D} ctx context to render on + * @param {Number} left x coordinate where the control center should be + * @param {Number} top y coordinate where the control center should be + * @param {Object} styleOverride override for fabric.Object controls style + * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls + */ +function renderSquareControl(ctx, left, top, styleOverride, fabricObject) { + styleOverride = styleOverride || {}; + var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize, ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize, transparentCorners = typeof styleOverride.transparentCorners !== 'undefined' + ? styleOverride.transparentCorners + : fabricObject.transparentCorners, methodName = transparentCorners ? 'stroke' : 'fill', stroke = !transparentCorners && + (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor), xSizeBy2 = xSize / 2, ySizeBy2 = ySize / 2; + ctx.save(); + ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor; + ctx.strokeStyle = + styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor; + // this is still wrong + ctx.lineWidth = 1; + ctx.translate(left, top); + // angle is relative to canvas plane + var angle = fabricObject.getTotalAngle(); + ctx.rotate(degreesToRadians$1(angle)); + // this does not work, and fixed with ( && ) does not make sense. + // to have real transparent corners we need the controls on upperCanvas + // transparentCorners || ctx.clearRect(-xSizeBy2, -ySizeBy2, xSize, ySize); + ctx[methodName + 'Rect'](-xSizeBy2, -ySizeBy2, xSize, ySize); + if (stroke) { + ctx.strokeRect(-xSizeBy2, -ySizeBy2, xSize, ySize); } - }, + ctx.restore(); +} - /** - * Moves cursor with shift - * @param {Number} offset - */ - moveCursorWithShift: function(offset) { - var newSelection = this._selectionDirection === 'left' - ? this.selectionStart + offset - : this.selectionEnd + offset; - this.setSelectionStartEndWithShift(this.selectionStart, this.selectionEnd, newSelection); - return offset !== 0; - }, +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}); + function Control(options) { + for (var i in options) { + this[i] = options[i]; + } + } + fabric.Control = Control; + fabric.Control.prototype = /** @lends fabric.Control.prototype */ { + /** + * keep track of control visibility. + * mainly for backward compatibility. + * if you do not want to see a control, you can remove it + * from the controlset. + * @type {Boolean} + * @default true + */ + visible: true, + /** + * Name of the action that the control will likely execute. + * This is optional. FabricJS uses to identify what the user is doing for some + * extra optimizations. If you are writing a custom control and you want to know + * somewhere else in the code what is going on, you can use this string here. + * you can also provide a custom getActionName if your control run multiple actions + * depending on some external state. + * default to scale since is the most common, used on 4 corners by default + * @type {String} + * @default 'scale' + */ + actionName: 'scale', + /** + * Drawing angle of the control. + * NOT used for now, but name marked as needed for internal logic + * example: to reuse the same drawing function for different rotated controls + * @type {Number} + * @default 0 + */ + angle: 0, + /** + * Relative position of the control. X + * 0,0 is the center of the Object, while -0.5 (left) or 0.5 (right) are the extremities + * of the bounding box. + * @type {Number} + * @default 0 + */ + x: 0, + /** + * Relative position of the control. Y + * 0,0 is the center of the Object, while -0.5 (top) or 0.5 (bottom) are the extremities + * of the bounding box. + * @type {Number} + * @default 0 + */ + y: 0, + /** + * Horizontal offset of the control from the defined position. In pixels + * Positive offset moves the control to the right, negative to the left. + * It used when you want to have position of control that does not scale with + * the bounding box. Example: rotation control is placed at x:0, y: 0.5 on + * the boundindbox, with an offset of 30 pixels vertically. Those 30 pixels will + * stay 30 pixels no matter how the object is big. Another example is having 2 + * controls in the corner, that stay in the same position when the object scale. + * of the bounding box. + * @type {Number} + * @default 0 + */ + offsetX: 0, + /** + * Vertical offset of the control from the defined position. In pixels + * Positive offset moves the control to the bottom, negative to the top. + * @type {Number} + * @default 0 + */ + offsetY: 0, + /** + * Sets the length of the control. If null, defaults to object's cornerSize. + * Expects both sizeX and sizeY to be set when set. + * @type {?Number} + * @default null + */ + sizeX: null, + /** + * Sets the height of the control. If null, defaults to object's cornerSize. + * Expects both sizeX and sizeY to be set when set. + * @type {?Number} + * @default null + */ + sizeY: null, + /** + * Sets the length of the touch area of the control. If null, defaults to object's touchCornerSize. + * Expects both touchSizeX and touchSizeY to be set when set. + * @type {?Number} + * @default null + */ + touchSizeX: null, + /** + * Sets the height of the touch area of the control. If null, defaults to object's touchCornerSize. + * Expects both touchSizeX and touchSizeY to be set when set. + * @type {?Number} + * @default null + */ + touchSizeY: null, + /** + * Css cursor style to display when the control is hovered. + * if the method `cursorStyleHandler` is provided, this property is ignored. + * @type {String} + * @default 'crosshair' + */ + cursorStyle: 'crosshair', + /** + * If controls has an offsetY or offsetX, draw a line that connects + * the control to the bounding box + * @type {Boolean} + * @default false + */ + withConnection: false, + /** + * The control actionHandler, provide one to handle action ( control being moved ) + * @param {Event} eventData the native mouse event + * @param {Object} transformData properties of the current transform + * @param {Number} x x position of the cursor + * @param {Number} y y position of the cursor + * @return {Boolean} true if the action/event modified the object + */ + actionHandler: function ( /* eventData, transformData, x, y */) { }, + /** + * The control handler for mouse down, provide one to handle mouse down on control + * @param {Event} eventData the native mouse event + * @param {Object} transformData properties of the current transform + * @param {Number} x x position of the cursor + * @param {Number} y y position of the cursor + * @return {Boolean} true if the action/event modified the object + */ + mouseDownHandler: function ( /* eventData, transformData, x, y */) { }, + /** + * The control mouseUpHandler, provide one to handle an effect on mouse up. + * @param {Event} eventData the native mouse event + * @param {Object} transformData properties of the current transform + * @param {Number} x x position of the cursor + * @param {Number} y y position of the cursor + * @return {Boolean} true if the action/event modified the object + */ + mouseUpHandler: function ( /* eventData, transformData, x, y */) { }, + /** + * Returns control actionHandler + * @param {Event} eventData the native mouse event + * @param {fabric.Object} fabricObject on which the control is displayed + * @param {fabric.Control} control control for which the action handler is being asked + * @return {Function} the action handler + */ + getActionHandler: function ( /* eventData, fabricObject, control */) { + return this.actionHandler; + }, + /** + * Returns control mouseDown handler + * @param {Event} eventData the native mouse event + * @param {fabric.Object} fabricObject on which the control is displayed + * @param {fabric.Control} control control for which the action handler is being asked + * @return {Function} the action handler + */ + getMouseDownHandler: function ( /* eventData, fabricObject, control */) { + return this.mouseDownHandler; + }, + /** + * Returns control mouseUp handler + * @param {Event} eventData the native mouse event + * @param {fabric.Object} fabricObject on which the control is displayed + * @param {fabric.Control} control control for which the action handler is being asked + * @return {Function} the action handler + */ + getMouseUpHandler: function ( /* eventData, fabricObject, control */) { + return this.mouseUpHandler; + }, + /** + * Returns control cursorStyle for css using cursorStyle. If you need a more elaborate + * function you can pass one in the constructor + * the cursorStyle property + * @param {Event} eventData the native mouse event + * @param {fabric.Control} control the current control ( likely this) + * @param {fabric.Object} object on which the control is displayed + * @return {String} + */ + cursorStyleHandler: function (eventData, control /* fabricObject */) { + return control.cursorStyle; + }, + /** + * Returns the action name. The basic implementation just return the actionName property. + * @param {Event} eventData the native mouse event + * @param {fabric.Control} control the current control ( likely this) + * @param {fabric.Object} object on which the control is displayed + * @return {String} + */ + getActionName: function (eventData, control /* fabricObject */) { + return control.actionName; + }, + /** + * Returns controls visibility + * @param {fabric.Object} object on which the control is displayed + * @param {String} controlKey key where the control is memorized on the + * @return {Boolean} + */ + getVisibility: function (fabricObject, controlKey) { + var objectVisibility = fabricObject._controlsVisibility; + if (objectVisibility && + typeof objectVisibility[controlKey] !== 'undefined') { + return objectVisibility[controlKey]; + } + return this.visible; + }, + /** + * Sets controls visibility + * @param {Boolean} visibility for the object + * @return {Void} + */ + setVisibility: function (visibility /* name, fabricObject */) { + this.visible = visibility; + }, + positionHandler: function (dim, finalMatrix /*, fabricObject, currentControl */) { + var point = fabric.util.transformPoint({ + x: this.x * dim.x + this.offsetX, + y: this.y * dim.y + this.offsetY, + }, finalMatrix); + return point; + }, + /** + * Returns the coords for this control based on object values. + * @param {Number} objectAngle angle from the fabric object holding the control + * @param {Number} objectCornerSize cornerSize from the fabric object holding the control (or touchCornerSize if + * isTouch is true) + * @param {Number} centerX x coordinate where the control center should be + * @param {Number} centerY y coordinate where the control center should be + * @param {boolean} isTouch true if touch corner, false if normal corner + */ + calcCornerCoords: function (objectAngle, objectCornerSize, centerX, centerY, isTouch) { + var cosHalfOffset, sinHalfOffset, cosHalfOffsetComp, sinHalfOffsetComp, xSize = isTouch ? this.touchSizeX : this.sizeX, ySize = isTouch ? this.touchSizeY : this.sizeY; + if (xSize && ySize && xSize !== ySize) { + // handle rectangular corners + var controlTriangleAngle = Math.atan2(ySize, xSize); + var cornerHypotenuse = Math.sqrt(xSize * xSize + ySize * ySize) / 2; + var newTheta = controlTriangleAngle - fabric.util.degreesToRadians(objectAngle); + var newThetaComp = Math.PI / 2 - + controlTriangleAngle - + fabric.util.degreesToRadians(objectAngle); + cosHalfOffset = cornerHypotenuse * fabric.util.cos(newTheta); + sinHalfOffset = cornerHypotenuse * fabric.util.sin(newTheta); + // use complementary angle for two corners + cosHalfOffsetComp = cornerHypotenuse * fabric.util.cos(newThetaComp); + sinHalfOffsetComp = cornerHypotenuse * fabric.util.sin(newThetaComp); + } + else { + // handle square corners + // use default object corner size unless size is defined + var cornerSize = xSize && ySize ? xSize : objectCornerSize; + /* 0.7071067812 stands for sqrt(2)/2 */ + cornerHypotenuse = cornerSize * 0.7071067812; + // complementary angles are equal since they're both 45 degrees + var newTheta = fabric.util.degreesToRadians(45 - objectAngle); + cosHalfOffset = cosHalfOffsetComp = + cornerHypotenuse * fabric.util.cos(newTheta); + sinHalfOffset = sinHalfOffsetComp = + cornerHypotenuse * fabric.util.sin(newTheta); + } + return { + tl: { + x: centerX - sinHalfOffsetComp, + y: centerY - cosHalfOffsetComp, + }, + tr: { + x: centerX + cosHalfOffset, + y: centerY - sinHalfOffset, + }, + bl: { + x: centerX - cosHalfOffset, + y: centerY + sinHalfOffset, + }, + br: { + x: centerX + sinHalfOffsetComp, + y: centerY + cosHalfOffsetComp, + }, + }; + }, + /** + * Render function for the control. + * When this function runs the context is unscaled. unrotate. Just retina scaled. + * all the functions will have to translate to the point left,top before starting Drawing + * if they want to draw a control where the position is detected. + * left and top are the result of the positionHandler function + * @param {RenderingContext2D} ctx the context where the control will be drawn + * @param {Number} left position of the canvas where we are about to render the control. + * @param {Number} top position of the canvas where we are about to render the control. + * @param {Object} styleOverride + * @param {fabric.Object} fabricObject the object where the control is about to be rendered + */ + render: function (ctx, left, top, styleOverride, fabricObject) { + styleOverride = styleOverride || {}; + switch (styleOverride.cornerStyle || fabricObject.cornerStyle) { + case 'circle': + renderCircleControl.call(this, ctx, left, top, styleOverride, fabricObject); + break; + default: + renderSquareControl.call(this, ctx, left, top, styleOverride, fabricObject); + } + }, + }; +})(typeof exports !== 'undefined' ? exports : window); - /** - * Moves cursor up without shift - * @param {Number} offset - */ - moveCursorWithoutShift: function(offset) { - if (offset < 0) { - this.selectionStart += offset; - this.selectionEnd = this.selectionStart; +//@ts-nocheck +(function (global) { + var fabric = global.fabric || (global.fabric = {}), scaleMap = ['e', 'se', 's', 'sw', 'w', 'nw', 'n', 'ne', 'e'], skewMap = ['ns', 'nesw', 'ew', 'nwse'], controls = {}, LEFT = 'left', TOP = 'top', RIGHT = 'right', BOTTOM = 'bottom', CENTER = 'center', opposite = { + top: BOTTOM, + bottom: TOP, + left: RIGHT, + right: LEFT, + center: CENTER, + }, radiansToDegrees = fabric.util.radiansToDegrees, sign = Math.sign || + function (x) { + return (x > 0) - (x < 0) || +x; + }; + /** + * Combine control position and object angle to find the control direction compared + * to the object center. + * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls + * @param {fabric.Control} control the control class + * @return {Number} 0 - 7 a quadrant number + */ + function findCornerQuadrant(fabricObject, control) { + // angle is relative to canvas plane + var angle = fabricObject.getTotalAngle(); + var cornerAngle = angle + radiansToDegrees(Math.atan2(control.y, control.x)) + 360; + return Math.round((cornerAngle % 360) / 45); } - else { - this.selectionEnd += offset; - this.selectionStart = this.selectionEnd; + /** + * Inspect event and fabricObject properties to understand if the scaling action + * @param {Event} eventData from the user action + * @param {fabric.Object} fabricObject the fabric object about to scale + * @return {Boolean} true if scale is proportional + */ + function scaleIsProportional(eventData, fabricObject) { + var canvas = fabricObject.canvas, uniScaleKey = canvas.uniScaleKey, uniformIsToggled = eventData[uniScaleKey]; + return ((canvas.uniformScaling && !uniformIsToggled) || + (!canvas.uniformScaling && uniformIsToggled)); } - return offset !== 0; - }, - - /** - * Moves cursor left - * @param {Event} e Event object - */ - moveCursorLeft: function(e) { - if (this.selectionStart === 0 && this.selectionEnd === 0) { - return; - } - this._moveCursorLeftOrRight('Left', e); - }, - - /** - * @private - * @return {Boolean} true if a change happened - */ - _move: function(e, prop, direction) { - var newValue; - if (e.altKey) { - newValue = this['findWordBoundary' + direction](this[prop]); - } - else if (e.metaKey || e.keyCode === 35 || e.keyCode === 36 ) { - newValue = this['findLineBoundary' + direction](this[prop]); + /** + * Checks if transform is centered + * @param {Object} transform transform data + * @return {Boolean} true if transform is centered + */ + function isTransformCentered(transform) { + return transform.originX === CENTER && transform.originY === CENTER; } - else { - this[prop] += direction === 'Left' ? -1 : 1; - return true; + /** + * Inspect fabricObject to understand if the current scaling action is allowed + * @param {fabric.Object} fabricObject the fabric object about to scale + * @param {String} by 'x' or 'y' or '' + * @param {Boolean} scaleProportionally true if we are trying to scale proportionally + * @return {Boolean} true if scaling is not allowed at current conditions + */ + function scalingIsForbidden(fabricObject, by, scaleProportionally) { + var lockX = fabricObject.lockScalingX, lockY = fabricObject.lockScalingY; + if (lockX && lockY) { + return true; + } + if (!by && (lockX || lockY) && scaleProportionally) { + return true; + } + if (lockX && by === 'x') { + return true; + } + if (lockY && by === 'y') { + return true; + } + return false; } - if (typeof newValue !== undefined && this[prop] !== newValue) { - this[prop] = newValue; - return true; + /** + * return the correct cursor style for the scale action + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} a valid css string for the cursor + */ + function scaleCursorStyleHandler(eventData, control, fabricObject) { + var notAllowed = 'not-allowed', scaleProportionally = scaleIsProportional(eventData, fabricObject), by = ''; + if (control.x !== 0 && control.y === 0) { + by = 'x'; + } + else if (control.x === 0 && control.y !== 0) { + by = 'y'; + } + if (scalingIsForbidden(fabricObject, by, scaleProportionally)) { + return notAllowed; + } + var n = findCornerQuadrant(fabricObject, control); + return scaleMap[n] + '-resize'; } - }, - - /** - * @private - */ - _moveLeft: function(e, prop) { - return this._move(e, prop, 'Left'); - }, - - /** - * @private - */ - _moveRight: function(e, prop) { - return this._move(e, prop, 'Right'); - }, - - /** - * Moves cursor left without keeping selection - * @param {Event} e - */ - moveCursorLeftWithoutShift: function(e) { - var change = true; - this._selectionDirection = 'left'; - - // only move cursor when there is no selection, - // otherwise we discard it, and leave cursor on same place - if (this.selectionEnd === this.selectionStart && this.selectionStart !== 0) { - change = this._moveLeft(e, 'selectionStart'); - + /** + * return the correct cursor style for the skew action + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} a valid css string for the cursor + */ + function skewCursorStyleHandler(eventData, control, fabricObject) { + var notAllowed = 'not-allowed'; + if (control.x !== 0 && fabricObject.lockSkewingY) { + return notAllowed; + } + if (control.y !== 0 && fabricObject.lockSkewingX) { + return notAllowed; + } + var n = findCornerQuadrant(fabricObject, control) % 4; + return skewMap[n] + '-resize'; } - this.selectionEnd = this.selectionStart; - return change; - }, - - /** - * Moves cursor left while keeping selection - * @param {Event} e - */ - moveCursorLeftWithShift: function(e) { - if (this._selectionDirection === 'right' && this.selectionStart !== this.selectionEnd) { - return this._moveLeft(e, 'selectionEnd'); - } - else if (this.selectionStart !== 0){ - this._selectionDirection = 'left'; - return this._moveLeft(e, 'selectionStart'); - } - }, - - /** - * Moves cursor right - * @param {Event} e Event object - */ - moveCursorRight: function(e) { - if (this.selectionStart >= this._text.length && this.selectionEnd >= this._text.length) { - return; - } - this._moveCursorLeftOrRight('Right', e); - }, - - /** - * Moves cursor right or Left, fires event - * @param {String} direction 'Left', 'Right' - * @param {Event} e Event object - */ - _moveCursorLeftOrRight: function(direction, e) { - var actionName = 'moveCursor' + direction + 'With'; - this._currentCursorOpacity = 1; - - if (e.shiftKey) { - actionName += 'Shift'; + /** + * Combine skew and scale style handlers to cover fabric standard use case + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} a valid css string for the cursor + */ + function scaleSkewCursorStyleHandler(eventData, control, fabricObject) { + if (eventData[fabricObject.canvas.altActionKey]) { + return controls.skewCursorStyleHandler(eventData, control, fabricObject); + } + return controls.scaleCursorStyleHandler(eventData, control, fabricObject); } - else { - actionName += 'outShift'; + /** + * Inspect event, control and fabricObject to return the correct action name + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} an action name + */ + function scaleOrSkewActionName(eventData, control, fabricObject) { + var isAlternative = eventData[fabricObject.canvas.altActionKey]; + if (control.x === 0) { + // then is scaleY or skewX + return isAlternative ? 'skewX' : 'scaleY'; + } + if (control.y === 0) { + // then is scaleY or skewX + return isAlternative ? 'skewY' : 'scaleX'; + } } - if (this[actionName](e)) { - this.abortCursorAnimation(); - this.initDelayedCursor(); - this._fireSelectionChanged(); - this._updateTextarea(); + /** + * Find the correct style for the control that is used for rotation. + * this function is very simple and it just take care of not-allowed or standard cursor + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} a valid css string for the cursor + */ + function rotationStyleHandler(eventData, control, fabricObject) { + if (fabricObject.lockRotation) { + return 'not-allowed'; + } + return control.cursorStyle; } - }, - - /** - * Moves cursor right while keeping selection - * @param {Event} e - */ - moveCursorRightWithShift: function(e) { - if (this._selectionDirection === 'left' && this.selectionStart !== this.selectionEnd) { - return this._moveRight(e, 'selectionStart'); - } - else if (this.selectionEnd !== this._text.length) { - this._selectionDirection = 'right'; - return this._moveRight(e, 'selectionEnd'); - } - }, - - /** - * Moves cursor right without keeping selection - * @param {Event} e Event object - */ - moveCursorRightWithoutShift: function(e) { - var changed = true; - this._selectionDirection = 'right'; - - if (this.selectionStart === this.selectionEnd) { - changed = this._moveRight(e, 'selectionStart'); - this.selectionEnd = this.selectionStart; + function commonEventInfo(eventData, transform, x, y) { + return { + e: eventData, + transform: transform, + pointer: { + x: x, + y: y, + }, + }; } - else { - this.selectionStart = this.selectionEnd; + /** + * Wrap an action handler with saving/restoring object position on the transform. + * this is the code that permits to objects to keep their position while transforming. + * @param {Function} actionHandler the function to wrap + * @return {Function} a function with an action handler signature + */ + function wrapWithFixedAnchor(actionHandler) { + return function (eventData, transform, x, y) { + var target = transform.target, centerPoint = target.getRelativeCenterPoint(), constraint = target.translateToOriginPoint(centerPoint, transform.originX, transform.originY), actionPerformed = actionHandler(eventData, transform, x, y); + target.setPositionByOrigin(constraint, transform.originX, transform.originY); + return actionPerformed; + }; } - return changed; - }, - - /** - * Removes characters from start/end - * start/end ar per grapheme position in _text array. - * - * @param {Number} start - * @param {Number} end default to start + 1 - */ - removeChars: function(start, end) { - if (typeof end === 'undefined') { - end = start + 1; - } - this.removeStyleFromTo(start, end); - this._text.splice(start, end - start); - this.text = this._text.join(''); - this.set('dirty', true); - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - this.setCoords(); - } - this._removeExtraneousStyles(); - }, - - /** - * insert characters at start position, before start position. - * start equal 1 it means the text get inserted between actual grapheme 0 and 1 - * if style array is provided, it must be as the same length of text in graphemes - * if end is provided and is bigger than start, old text is replaced. - * start/end ar per grapheme position in _text array. - * - * @param {String} text text to insert - * @param {Array} style array of style objects - * @param {Number} start - * @param {Number} end default to start + 1 - */ - insertChars: function(text, style, start, end) { - if (typeof end === 'undefined') { - end = start; - } - if (end > start) { - this.removeStyleFromTo(start, end); - } - var graphemes = fabric.util.string.graphemeSplit(text); - this.insertNewStyleBlock(graphemes, start, style); - this._text = [].concat(this._text.slice(0, start), graphemes, this._text.slice(end)); - this.text = this._text.join(''); - this.set('dirty', true); - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - this.setCoords(); - } - this._removeExtraneousStyles(); - }, - -}); - - -/* _TO_SVG_START_ */ -(function() { - var toFixed = fabric.util.toFixed, - multipleSpacesRegex = / +/g; - - fabric.util.object.extend(fabric.Text.prototype, /** @lends fabric.Text.prototype */ { - /** - * Returns SVG representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance + * Wrap an action handler with firing an event if the action is performed + * @param {Function} actionHandler the function to wrap + * @return {Function} a function with an action handler signature */ - _toSVG: function() { - var offsets = this._getSVGLeftTopOffsets(), - textAndBg = this._getSVGTextAndBg(offsets.textTop, offsets.textLeft); - return this._wrapSVGTextAndBg(textAndBg); - }, - + function wrapWithFireEvent(eventName, actionHandler) { + return function (eventData, transform, x, y) { + var actionPerformed = actionHandler(eventData, transform, x, y); + if (actionPerformed) { + fireEvent(eventName, commonEventInfo(eventData, transform, x, y)); + } + return actionPerformed; + }; + } /** - * Returns svg representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toSVG: function(reviver) { - return this._createBaseSVGMarkup( - this._toSVG(), - { reviver: reviver, noStyle: true, withShadow: true } - ); - }, - + * Transforms a point described by x and y in a distance from the top left corner of the object + * bounding box. + * @param {Object} transform + * @param {String} originX + * @param {String} originY + * @param {number} x + * @param {number} y + * @return {Fabric.Point} the normalized point + */ + function getLocalPoint(transform, originX, originY, x, y) { + var target = transform.target, control = target.controls[transform.corner], zoom = target.canvas.getZoom(), padding = target.padding / zoom, localPoint = target.normalizePoint(new Point(x, y), originX, originY); + if (localPoint.x >= padding) { + localPoint.x -= padding; + } + if (localPoint.x <= -padding) { + localPoint.x += padding; + } + if (localPoint.y >= padding) { + localPoint.y -= padding; + } + if (localPoint.y <= padding) { + localPoint.y += padding; + } + localPoint.x -= control.offsetX; + localPoint.y -= control.offsetY; + return localPoint; + } /** - * @private + * Detect if the fabric object is flipped on one side. + * @param {fabric.Object} target + * @return {Boolean} true if one flip, but not two. */ - _getSVGLeftTopOffsets: function() { - return { - textLeft: -this.width / 2, - textTop: -this.height / 2, - lineTop: this.getHeightOfLine(0) - }; - }, - + function targetHasOneFlip(target) { + return target.flipX !== target.flipY; + } /** + * Utility function to compensate the scale factor when skew is applied on both axes * @private */ - _wrapSVGTextAndBg: function(textAndBg) { - var noShadow = true, - textDecoration = this.getSvgTextDecoration(this); - return [ - textAndBg.textBgRects.join(''), - '\t\t', - textAndBg.textSpans.join(''), - '\n' - ]; - }, - + function compensateScaleForSkew(target, oppositeSkew, scaleToCompensate, axis, reference) { + if (target[oppositeSkew] !== 0) { + var newDim = target._getTransformedDimensions()[axis]; + var newValue = (reference / newDim) * target[scaleToCompensate]; + target.set(scaleToCompensate, newValue); + } + } /** + * Action handler for skewing on the X axis * @private - * @param {Number} textTopOffset Text top offset - * @param {Number} textLeftOffset Text left offset - * @return {Object} - */ - _getSVGTextAndBg: function(textTopOffset, textLeftOffset) { - var textSpans = [], - textBgRects = [], - height = textTopOffset, lineOffset; - // bounding-box background - this._setSVGBg(textBgRects); - - // text and text-background - for (var i = 0, len = this._textLines.length; i < len; i++) { - lineOffset = this._getLineLeftOffset(i); - if (this.textBackgroundColor || this.styleHas('textBackgroundColor', i)) { - this._setSVGTextLineBg(textBgRects, i, textLeftOffset + lineOffset, height); + */ + function skewObjectX(eventData, transform, x, y) { + var target = transform.target, + // find how big the object would be, if there was no skewX. takes in account scaling + dimNoSkew = target._getTransformedDimensions({ + skewX: 0, + skewY: target.skewY, + }), localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), + // the mouse is in the center of the object, and we want it to stay there. + // so the object will grow twice as much as the mouse. + // this makes the skew growth to localPoint * 2 - dimNoSkew. + totalSkewSize = Math.abs(localPoint.x * 2) - dimNoSkew.x, currentSkew = target.skewX, newSkew; + if (totalSkewSize < 2) { + // let's make it easy to go back to position 0. + newSkew = 0; } - this._setSVGTextLineText(textSpans, i, textLeftOffset + lineOffset, height); - height += this.getHeightOfLine(i); - } - - return { - textSpans: textSpans, - textBgRects: textBgRects - }; - }, - + else { + newSkew = radiansToDegrees(Math.atan2(totalSkewSize / target.scaleX, dimNoSkew.y / target.scaleY)); + // now we have to find the sign of the skew. + // it mostly depend on the origin of transformation. + if (transform.originX === LEFT && transform.originY === BOTTOM) { + newSkew = -newSkew; + } + if (transform.originX === RIGHT && transform.originY === TOP) { + newSkew = -newSkew; + } + if (targetHasOneFlip(target)) { + newSkew = -newSkew; + } + } + var hasSkewed = currentSkew !== newSkew; + if (hasSkewed) { + var dimBeforeSkewing = target._getTransformedDimensions().y; + target.set('skewX', newSkew); + compensateScaleForSkew(target, 'skewY', 'scaleY', 'y', dimBeforeSkewing); + } + return hasSkewed; + } /** + * Action handler for skewing on the Y axis * @private */ - _createTextCharSpan: function(_char, styleDecl, left, top) { - var shouldUseWhitespace = _char !== _char.trim() || _char.match(multipleSpacesRegex), - styleProps = this.getSvgSpanStyles(styleDecl, shouldUseWhitespace), - fillStyles = styleProps ? 'style="' + styleProps + '"' : '', - dy = styleDecl.deltaY, dySpan = '', - NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; - if (dy) { - dySpan = ' dy="' + toFixed(dy, NUM_FRACTION_DIGITS) + '" '; - } - return [ - '', - fabric.util.string.escapeXml(_char), - '' - ].join(''); - }, - - _setSVGTextLineText: function(textSpans, lineIndex, textLeftOffset, textTopOffset) { - // set proper line offset - var lineHeight = this.getHeightOfLine(lineIndex), - isJustify = this.textAlign.indexOf('justify') !== -1, - actualStyle, - nextStyle, - charsToRender = '', - charBox, style, - boxWidth = 0, - line = this._textLines[lineIndex], - timeToRender; - - textTopOffset += lineHeight * (1 - this._fontSizeFraction) / this.lineHeight; - for (var i = 0, len = line.length - 1; i <= len; i++) { - timeToRender = i === len || this.charSpacing; - charsToRender += line[i]; - charBox = this.__charBounds[lineIndex][i]; - if (boxWidth === 0) { - textLeftOffset += charBox.kernedWidth - charBox.width; - boxWidth += charBox.width; + function skewObjectY(eventData, transform, x, y) { + var target = transform.target, + // find how big the object would be, if there was no skewX. takes in account scaling + dimNoSkew = target._getTransformedDimensions({ + skewX: target.skewX, + skewY: 0, + }), localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), + // the mouse is in the center of the object, and we want it to stay there. + // so the object will grow twice as much as the mouse. + // this makes the skew growth to localPoint * 2 - dimNoSkew. + totalSkewSize = Math.abs(localPoint.y * 2) - dimNoSkew.y, currentSkew = target.skewY, newSkew; + if (totalSkewSize < 2) { + // let's make it easy to go back to position 0. + newSkew = 0; } else { - boxWidth += charBox.kernedWidth; + newSkew = radiansToDegrees(Math.atan2(totalSkewSize / target.scaleY, dimNoSkew.x / target.scaleX)); + // now we have to find the sign of the skew. + // it mostly depend on the origin of transformation. + if (transform.originX === LEFT && transform.originY === BOTTOM) { + newSkew = -newSkew; + } + if (transform.originX === RIGHT && transform.originY === TOP) { + newSkew = -newSkew; + } + if (targetHasOneFlip(target)) { + newSkew = -newSkew; + } } - if (isJustify && !timeToRender) { - if (this._reSpaceAndTab.test(line[i])) { - timeToRender = true; - } + var hasSkewed = currentSkew !== newSkew; + if (hasSkewed) { + var dimBeforeSkewing = target._getTransformedDimensions().x; + target.set('skewY', newSkew); + compensateScaleForSkew(target, 'skewX', 'scaleX', 'x', dimBeforeSkewing); + } + return hasSkewed; + } + /** + * Wrapped Action handler for skewing on the Y axis, takes care of the + * skew direction and determine the correct transform origin for the anchor point + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function skewHandlerX(eventData, transform, x, y) { + // step1 figure out and change transform origin. + // if skewX > 0 and originY bottom we anchor on right + // if skewX > 0 and originY top we anchor on left + // if skewX < 0 and originY bottom we anchor on left + // if skewX < 0 and originY top we anchor on right + // if skewX is 0, we look for mouse position to understand where are we going. + var target = transform.target, currentSkew = target.skewX, originX, originY = transform.originY; + if (target.lockSkewingX) { + return false; } - if (!timeToRender) { - // if we have charSpacing, we render char by char - actualStyle = actualStyle || this.getCompleteStyleDeclaration(lineIndex, i); - nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1); - timeToRender = this._hasStyleChangedForSvg(actualStyle, nextStyle); + if (currentSkew === 0) { + var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y); + if (localPointFromCenter.x > 0) { + // we are pulling right, anchor left; + originX = LEFT; + } + else { + // we are pulling right, anchor right + originX = RIGHT; + } } - if (timeToRender) { - style = this._getStyleDeclaration(lineIndex, i) || { }; - textSpans.push(this._createTextCharSpan(charsToRender, style, textLeftOffset, textTopOffset)); - charsToRender = ''; - actualStyle = nextStyle; - textLeftOffset += boxWidth; - boxWidth = 0; + else { + if (currentSkew > 0) { + originX = originY === TOP ? LEFT : RIGHT; + } + if (currentSkew < 0) { + originX = originY === TOP ? RIGHT : LEFT; + } + // is the object flipped on one side only? swap the origin. + if (targetHasOneFlip(target)) { + originX = originX === LEFT ? RIGHT : LEFT; + } } - } - }, - - _pushTextBgRect: function(textBgRects, color, left, top, width, height) { - var NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; - textBgRects.push( - '\t\t\n'); - }, - - _setSVGTextLineBg: function(textBgRects, i, leftOffset, textTopOffset) { - var line = this._textLines[i], - heightOfLine = this.getHeightOfLine(i) / this.lineHeight, - boxWidth = 0, - boxStart = 0, - charBox, currentColor, - lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor'); - for (var j = 0, jlen = line.length; j < jlen; j++) { - charBox = this.__charBounds[i][j]; - currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor'); - if (currentColor !== lastColor) { - lastColor && this._pushTextBgRect(textBgRects, lastColor, leftOffset + boxStart, - textTopOffset, boxWidth, heightOfLine); - boxStart = charBox.left; - boxWidth = charBox.width; - lastColor = currentColor; + // once we have the origin, we find the anchor point + transform.originX = originX; + var finalHandler = wrapWithFireEvent('skewing', wrapWithFixedAnchor(skewObjectX)); + return finalHandler(eventData, transform, x, y); + } + /** + * Wrapped Action handler for skewing on the Y axis, takes care of the + * skew direction and determine the correct transform origin for the anchor point + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function skewHandlerY(eventData, transform, x, y) { + // step1 figure out and change transform origin. + // if skewY > 0 and originX left we anchor on top + // if skewY > 0 and originX right we anchor on bottom + // if skewY < 0 and originX left we anchor on bottom + // if skewY < 0 and originX right we anchor on top + // if skewY is 0, we look for mouse position to understand where are we going. + var target = transform.target, currentSkew = target.skewY, originY, originX = transform.originX; + if (target.lockSkewingY) { + return false; + } + if (currentSkew === 0) { + var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y); + if (localPointFromCenter.y > 0) { + // we are pulling down, anchor up; + originY = TOP; + } + else { + // we are pulling up, anchor down + originY = BOTTOM; + } } else { - boxWidth += charBox.kernedWidth; + if (currentSkew > 0) { + originY = originX === LEFT ? TOP : BOTTOM; + } + if (currentSkew < 0) { + originY = originX === LEFT ? BOTTOM : TOP; + } + // is the object flipped on one side only? swap the origin. + if (targetHasOneFlip(target)) { + originY = originY === TOP ? BOTTOM : TOP; + } } - } - currentColor && this._pushTextBgRect(textBgRects, currentColor, leftOffset + boxStart, - textTopOffset, boxWidth, heightOfLine); - }, - + // once we have the origin, we find the anchor point + transform.originY = originY; + var finalHandler = wrapWithFireEvent('skewing', wrapWithFixedAnchor(skewObjectY)); + return finalHandler(eventData, transform, x, y); + } /** - * Adobe Illustrator (at least CS5) is unable to render rgba()-based fill values - * we work around it by "moving" alpha channel into opacity attribute and setting fill's alpha to 1 - * + * Action handler for rotation and snapping, without anchor point. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened * @private - * @param {*} value - * @return {String} */ - _getFillAttributes: function(value) { - var fillColor = (value && typeof value === 'string') ? new fabric.Color(value) : ''; - if (!fillColor || !fillColor.getSource() || fillColor.getAlpha() === 1) { - return 'fill="' + value + '"'; - } - return 'opacity="' + fillColor.getAlpha() + '" fill="' + fillColor.setAlpha(1).toRgb() + '"'; - }, - + function rotationWithSnapping(eventData, transform, x, y) { + var t = transform, target = t.target, pivotPoint = target.translateToOriginPoint(target.getRelativeCenterPoint(), t.originX, t.originY); + if (target.lockRotation) { + return false; + } + var lastAngle = Math.atan2(t.ey - pivotPoint.y, t.ex - pivotPoint.x), curAngle = Math.atan2(y - pivotPoint.y, x - pivotPoint.x), angle = radiansToDegrees(curAngle - lastAngle + t.theta), hasRotated = true; + if (target.snapAngle > 0) { + var snapAngle = target.snapAngle, snapThreshold = target.snapThreshold || snapAngle, rightAngleLocked = Math.ceil(angle / snapAngle) * snapAngle, leftAngleLocked = Math.floor(angle / snapAngle) * snapAngle; + if (Math.abs(angle - leftAngleLocked) < snapThreshold) { + angle = leftAngleLocked; + } + else if (Math.abs(angle - rightAngleLocked) < snapThreshold) { + angle = rightAngleLocked; + } + } + // normalize angle to positive value + if (angle < 0) { + angle = 360 + angle; + } + angle %= 360; + hasRotated = target.angle !== angle; + target.angle = angle; + return hasRotated; + } /** + * Basic scaling logic, reused with different constrain for scaling X,Y, freely or equally. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @param {Object} options additional information for scaling + * @param {String} options.by 'x', 'y', 'equally' or '' to indicate type of scaling + * @return {Boolean} true if some change happened * @private */ - _getSVGLineTopOffset: function(lineIndex) { - var lineTopOffset = 0, lastHeight = 0; - for (var j = 0; j < lineIndex; j++) { - lineTopOffset += this.getHeightOfLine(j); - } - lastHeight = this.getHeightOfLine(j); - return { - lineTop: lineTopOffset, - offset: (this._fontSizeMult - this._fontSizeFraction) * lastHeight / (this.lineHeight * this._fontSizeMult) - }; - }, - + function scaleObject(eventData, transform, x, y, options) { + options = options || {}; + var target = transform.target, lockScalingX = target.lockScalingX, lockScalingY = target.lockScalingY, by = options.by, newPoint, scaleX, scaleY, dim, scaleProportionally = scaleIsProportional(eventData, target), forbidScaling = scalingIsForbidden(target, by, scaleProportionally), signX, signY, gestureScale = transform.gestureScale; + if (forbidScaling) { + return false; + } + if (gestureScale) { + scaleX = transform.scaleX * gestureScale; + scaleY = transform.scaleY * gestureScale; + } + else { + newPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y); + // use of sign: We use sign to detect change of direction of an action. sign usually change when + // we cross the origin point with the mouse. So a scale flip for example. There is an issue when scaling + // by center and scaling using one middle control ( default: mr, mt, ml, mb), the mouse movement can easily + // cross many time the origin point and flip the object. so we need a way to filter out the noise. + // This ternary here should be ok to filter out X scaling when we want Y only and vice versa. + signX = by !== 'y' ? sign(newPoint.x) : 1; + signY = by !== 'x' ? sign(newPoint.y) : 1; + if (!transform.signX) { + transform.signX = signX; + } + if (!transform.signY) { + transform.signY = signY; + } + if (target.lockScalingFlip && + (transform.signX !== signX || transform.signY !== signY)) { + return false; + } + dim = target._getTransformedDimensions(); + // missing detection of flip and logic to switch the origin + if (scaleProportionally && !by) { + // uniform scaling + var distance = Math.abs(newPoint.x) + Math.abs(newPoint.y), original = transform.original, originalDistance = Math.abs((dim.x * original.scaleX) / target.scaleX) + + Math.abs((dim.y * original.scaleY) / target.scaleY), scale = distance / originalDistance; + scaleX = original.scaleX * scale; + scaleY = original.scaleY * scale; + } + else { + scaleX = Math.abs((newPoint.x * target.scaleX) / dim.x); + scaleY = Math.abs((newPoint.y * target.scaleY) / dim.y); + } + // if we are scaling by center, we need to double the scale + if (isTransformCentered(transform)) { + scaleX *= 2; + scaleY *= 2; + } + if (transform.signX !== signX && by !== 'y') { + transform.originX = opposite[transform.originX]; + scaleX *= -1; + transform.signX = signX; + } + if (transform.signY !== signY && by !== 'x') { + transform.originY = opposite[transform.originY]; + scaleY *= -1; + transform.signY = signY; + } + } + // minScale is taken are in the setter. + var oldScaleX = target.scaleX, oldScaleY = target.scaleY; + if (!by) { + !lockScalingX && target.set('scaleX', scaleX); + !lockScalingY && target.set('scaleY', scaleY); + } + else { + // forbidden cases already handled on top here. + by === 'x' && target.set('scaleX', scaleX); + by === 'y' && target.set('scaleY', scaleY); + } + return oldScaleX !== target.scaleX || oldScaleY !== target.scaleY; + } + /** + * Generic scaling logic, to scale from corners either equally or freely. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scaleObjectFromCorner(eventData, transform, x, y) { + return scaleObject(eventData, transform, x, y); + } + /** + * Scaling logic for the X axis. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scaleObjectX(eventData, transform, x, y) { + return scaleObject(eventData, transform, x, y, { by: 'x' }); + } + /** + * Scaling logic for the Y axis. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scaleObjectY(eventData, transform, x, y) { + return scaleObject(eventData, transform, x, y, { by: 'y' }); + } + /** + * Composed action handler to either scale Y or skew X + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scalingYOrSkewingX(eventData, transform, x, y) { + // ok some safety needed here. + if (eventData[transform.target.canvas.altActionKey]) { + return controls.skewHandlerX(eventData, transform, x, y); + } + return controls.scalingY(eventData, transform, x, y); + } + /** + * Composed action handler to either scale X or skew Y + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scalingXOrSkewingY(eventData, transform, x, y) { + // ok some safety needed here. + if (eventData[transform.target.canvas.altActionKey]) { + return controls.skewHandlerY(eventData, transform, x, y); + } + return controls.scalingX(eventData, transform, x, y); + } + /** + * Action handler to change textbox width + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function changeWidth(eventData, transform, x, y) { + var localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y); + // make sure the control changes width ONLY from it's side of target + if (transform.originX === 'center' || + (transform.originX === 'right' && localPoint.x < 0) || + (transform.originX === 'left' && localPoint.x > 0)) { + var target = transform.target, strokePadding = target.strokeWidth / (target.strokeUniform ? target.scaleX : 1), multiplier = isTransformCentered(transform) ? 2 : 1, oldWidth = target.width, newWidth = Math.ceil(Math.abs((localPoint.x * multiplier) / target.scaleX) - strokePadding); + target.set('width', Math.max(newWidth, 0)); + // check against actual target width in case `newWidth` was rejected + return oldWidth !== target.width; + } + return false; + } /** - * Returns styles-string for svg-export - * @param {Boolean} skipShadow a boolean to skip shadow filter output - * @return {String} - */ - getSvgStyles: function(skipShadow) { - var svgStyle = fabric.Object.prototype.getSvgStyles.call(this, skipShadow); - return svgStyle + ' white-space: pre;'; - }, - }); -})(); -/* _TO_SVG_END_ */ - - -(function(global) { - - 'use strict'; - - var fabric = global.fabric || (global.fabric = {}); - - /** - * Textbox class, based on IText, allows the user to resize the text rectangle - * and wraps lines automatically. Textboxes have their Y scaling locked, the - * user can only change width. Height is adjusted automatically based on the - * wrapping of lines. - * @class fabric.Textbox - * @extends fabric.IText - * @mixes fabric.Observable - * @return {fabric.Textbox} thisArg - * @see {@link fabric.Textbox#initialize} for constructor definition - */ - fabric.Textbox = fabric.util.createClass(fabric.IText, fabric.Observable, { + * Action handler + * @private + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if the translation occurred + */ + function dragHandler(eventData, transform, x, y) { + var target = transform.target, newLeft = x - transform.offsetX, newTop = y - transform.offsetY, moveX = !target.get('lockMovementX') && target.left !== newLeft, moveY = !target.get('lockMovementY') && target.top !== newTop; + moveX && target.set('left', newLeft); + moveY && target.set('top', newTop); + if (moveX || moveY) { + fireEvent('moving', commonEventInfo(eventData, transform, x, y)); + } + return moveX || moveY; + } + controls.scaleCursorStyleHandler = scaleCursorStyleHandler; + controls.skewCursorStyleHandler = skewCursorStyleHandler; + controls.scaleSkewCursorStyleHandler = scaleSkewCursorStyleHandler; + controls.rotationWithSnapping = wrapWithFireEvent('rotating', wrapWithFixedAnchor(rotationWithSnapping)); + controls.scalingEqually = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectFromCorner)); + controls.scalingX = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectX)); + controls.scalingY = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectY)); + controls.scalingYOrSkewingX = scalingYOrSkewingX; + controls.scalingXOrSkewingY = scalingXOrSkewingY; + controls.changeWidth = wrapWithFireEvent('resizing', wrapWithFixedAnchor(changeWidth)); + controls.skewHandlerX = skewHandlerX; + controls.skewHandlerY = skewHandlerY; + controls.dragHandler = dragHandler; + controls.scaleOrSkewActionName = scaleOrSkewActionName; + controls.rotationStyleHandler = rotationStyleHandler; + controls.fireEvent = fireEvent; + controls.wrapWithFixedAnchor = wrapWithFixedAnchor; + controls.wrapWithFireEvent = wrapWithFireEvent; + controls.getLocalPoint = getLocalPoint; + controls.renderCircleControl = renderCircleControl; + controls.renderSquareControl = renderSquareControl; + fabric.controlsUtils = controls; +})(typeof exports !== 'undefined' ? exports : window); + +//@ts-nocheck +(function (global) { + var fabric = global.fabric, controlsUtils = fabric.controlsUtils, scaleSkewStyleHandler = controlsUtils.scaleSkewCursorStyleHandler, scaleStyleHandler = controlsUtils.scaleCursorStyleHandler, scalingEqually = controlsUtils.scalingEqually, scalingYOrSkewingX = controlsUtils.scalingYOrSkewingX, scalingXOrSkewingY = controlsUtils.scalingXOrSkewingY, scaleOrSkewActionName = controlsUtils.scaleOrSkewActionName, objectControls = fabric.Object.prototype.controls; + objectControls.ml = new fabric.Control({ + x: -0.5, + y: 0, + cursorStyleHandler: scaleSkewStyleHandler, + actionHandler: scalingXOrSkewingY, + getActionName: scaleOrSkewActionName, + }); + objectControls.mr = new fabric.Control({ + x: 0.5, + y: 0, + cursorStyleHandler: scaleSkewStyleHandler, + actionHandler: scalingXOrSkewingY, + getActionName: scaleOrSkewActionName, + }); + objectControls.mb = new fabric.Control({ + x: 0, + y: 0.5, + cursorStyleHandler: scaleSkewStyleHandler, + actionHandler: scalingYOrSkewingX, + getActionName: scaleOrSkewActionName, + }); + objectControls.mt = new fabric.Control({ + x: 0, + y: -0.5, + cursorStyleHandler: scaleSkewStyleHandler, + actionHandler: scalingYOrSkewingX, + getActionName: scaleOrSkewActionName, + }); + objectControls.tl = new fabric.Control({ + x: -0.5, + y: -0.5, + cursorStyleHandler: scaleStyleHandler, + actionHandler: scalingEqually, + }); + objectControls.tr = new fabric.Control({ + x: 0.5, + y: -0.5, + cursorStyleHandler: scaleStyleHandler, + actionHandler: scalingEqually, + }); + objectControls.bl = new fabric.Control({ + x: -0.5, + y: 0.5, + cursorStyleHandler: scaleStyleHandler, + actionHandler: scalingEqually, + }); + objectControls.br = new fabric.Control({ + x: 0.5, + y: 0.5, + cursorStyleHandler: scaleStyleHandler, + actionHandler: scalingEqually, + }); + objectControls.mtr = new fabric.Control({ + x: 0, + y: -0.5, + actionHandler: controlsUtils.rotationWithSnapping, + cursorStyleHandler: controlsUtils.rotationStyleHandler, + offsetY: -40, + withConnection: true, + actionName: 'rotate', + }); + if (fabric.Textbox) { + // this is breaking the prototype inheritance, no time / ideas to fix it. + // is important to document that if you want to have all objects to have a + // specific custom control, you have to add it to Object prototype and to Textbox + // prototype. The controls are shared as references. So changes to control `tr` + // can still apply to all objects if needed. + var textBoxControls = (fabric.Textbox.prototype.controls = {}); + textBoxControls.mtr = objectControls.mtr; + textBoxControls.tr = objectControls.tr; + textBoxControls.br = objectControls.br; + textBoxControls.tl = objectControls.tl; + textBoxControls.bl = objectControls.bl; + textBoxControls.mt = objectControls.mt; + textBoxControls.mb = objectControls.mb; + textBoxControls.mr = new fabric.Control({ + x: 0.5, + y: 0, + actionHandler: controlsUtils.changeWidth, + cursorStyleHandler: scaleSkewStyleHandler, + actionName: 'resizing', + }); + textBoxControls.ml = new fabric.Control({ + x: -0.5, + y: 0, + actionHandler: controlsUtils.changeWidth, + cursorStyleHandler: scaleSkewStyleHandler, + actionName: 'resizing', + }); + } +})(typeof exports !== 'undefined' ? exports : window); +/** + * @see {@link http://fabricjs.com/freedrawing|Freedrawing demo} + */ +class BaseBrush { + constructor(canvas) { + /** + * Color of a brush + * @type String + * @default + */ + this.color = 'rgb(0, 0, 0)'; + /** + * Width of a brush, has to be a Number, no string literals + * @type Number + * @default + */ + this.width = 1; + /** + * Shadow object representing shadow of this shape. + * Backwards incompatibility note: This property replaces "shadowColor" (String), "shadowOffsetX" (Number), + * "shadowOffsetY" (Number) and "shadowBlur" (Number) since v1.2.12 + * @type Shadow + * @default + */ + this.shadow = null; + /** + * Line endings style of a brush (one of "butt", "round", "square") + * @type String + * @default + */ + this.strokeLineCap = 'round'; + /** + * Corner style of a brush (one of "bevel", "round", "miter") + * @type String + * @default + */ + this.strokeLineJoin = 'round'; + /** + * Maximum miter length (used for strokeLineJoin = "miter") of a brush's + * @type Number + * @default + */ + this.strokeMiterLimit = 10; + /** + * Stroke Dash Array. + * @type Array + * @default + */ + this.strokeDashArray = null; + /** + * When `true`, the free drawing is limited to the whiteboard size. Default to false. + * @type Boolean + * @default false + */ + this.limitedToCanvasSize = false; + this.canvas = canvas; + } + /** + * Sets brush styles + * @private + * @param {CanvasRenderingContext2D} ctx + */ + _setBrushStyles(ctx) { + ctx.strokeStyle = this.color; + ctx.lineWidth = this.width; + ctx.lineCap = this.strokeLineCap; + ctx.miterLimit = this.strokeMiterLimit; + ctx.lineJoin = this.strokeLineJoin; + ctx.setLineDash(this.strokeDashArray || []); + } /** - * Type of an object - * @type String - * @default + * Sets the transformation on given context + * @param {CanvasRenderingContext2D} ctx context to render on + * @private */ - type: 'textbox', - + _saveAndTransform(ctx) { + const v = this.canvas.viewportTransform; + ctx.save(); + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + } /** - * Minimum width of textbox, in pixels. - * @type Number - * @default + * Sets brush shadow styles + * @private */ - minWidth: 20, - + _setShadow() { + if (!this.shadow || !this.canvas) { + return; + } + const canvas = this.canvas, shadow = this.shadow, ctx = canvas.contextTop, zoom = canvas.getZoom() * canvas.getRetinaScaling(); + ctx.shadowColor = shadow.color; + ctx.shadowBlur = shadow.blur * zoom; + ctx.shadowOffsetX = shadow.offsetX * zoom; + ctx.shadowOffsetY = shadow.offsetY * zoom; + } + needsFullRender() { + const color = new Color(this.color); + return color.getAlpha() < 1 || !!this.shadow; + } /** - * Minimum calculated width of a textbox, in pixels. - * fixed to 2 so that an empty textbox cannot go to 0 - * and is still selectable without text. - * @type Number - * @default + * Removes brush shadow styles + * @private */ - dynamicMinWidth: 2, - + _resetShadow() { + const ctx = this.canvas.contextTop; + ctx.shadowColor = ''; + ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0; + } /** - * Cached array of text wrapping. - * @type Array + * Check is pointer is outside canvas boundaries + * @param {Object} pointer + * @private */ - __cachedLines: null, + _isOutSideCanvas(pointer) { + return (pointer.x < 0 || + pointer.x > this.canvas.getWidth() || + pointer.y < 0 || + pointer.y > this.canvas.getHeight()); + } +} +fabric$1.BaseBrush = BaseBrush; +/** + * @todo remove transient + */ +const { Circle, Group: Group$1, Shadow: Shadow$2 } = fabric$1; +class CircleBrush extends BaseBrush { + constructor(canvas) { + super(canvas); + /** + * Width of a brush + * @type Number + * @default + */ + this.width = 10; + this.points = []; + } /** - * Override standard Object class values + * Invoked inside on mouse down and mouse move + * @param {Point} pointer */ - lockScalingFlip: true, - + drawDot(pointer) { + const point = this.addPoint(pointer), ctx = this.canvas.contextTop; + this._saveAndTransform(ctx); + this.dot(ctx, point); + ctx.restore(); + } + dot(ctx, point) { + ctx.fillStyle = point.fill; + ctx.beginPath(); + ctx.arc(point.x, point.y, point.radius, 0, Math.PI * 2, false); + ctx.closePath(); + ctx.fill(); + } /** - * Override standard Object class values - * Textbox needs this on false + * Invoked on mouse down */ - noScaleCache: false, - + onMouseDown(pointer) { + this.points = []; + this.canvas.clearContext(this.canvas.contextTop); + this._setShadow(); + this.drawDot(pointer); + } /** - * Properties which when set cause object to change dimensions - * @type Object + * Render the full state of the brush * @private */ - _dimensionAffectingProps: fabric.Text.prototype._dimensionAffectingProps.concat('width'), - + _render() { + const ctx = this.canvas.contextTop, points = this.points; + this._saveAndTransform(ctx); + for (let i = 0; i < points.length; i++) { + this.dot(ctx, points[i]); + } + ctx.restore(); + } /** - * Use this regular expression to split strings in breakable lines - * @private + * Invoked on mouse move + * @param {Point} pointer */ - _wordJoiners: /[ \t\r]/, - + onMouseMove(pointer) { + if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { + return; + } + if (this.needsFullRender()) { + this.canvas.clearContext(this.canvas.contextTop); + this.addPoint(pointer); + this._render(); + } + else { + this.drawDot(pointer); + } + } /** - * Use this boolean property in order to split strings that have no white space concept. - * this is a cheap way to help with chinese/japanese - * @type Boolean - * @since 2.6.0 + * Invoked on mouse up */ - splitByGrapheme: false, + onMouseUp() { + const originalRenderOnAddRemove = this.canvas.renderOnAddRemove; + this.canvas.renderOnAddRemove = false; + const circles = []; + for (let i = 0; i < this.points.length; i++) { + const point = this.points[i], circle = new Circle({ + radius: point.radius, + left: point.x, + top: point.y, + originX: 'center', + originY: 'center', + fill: point.fill, + }); + this.shadow && (circle.shadow = new Shadow$2(this.shadow)); + circles.push(circle); + } + const group = new Group$1(circles, { canvas: this.canvas }); + this.canvas.fire('before:path:created', { path: group }); + this.canvas.add(group); + this.canvas.fire('path:created', { path: group }); + this.canvas.clearContext(this.canvas.contextTop); + this._resetShadow(); + this.canvas.renderOnAddRemove = originalRenderOnAddRemove; + this.canvas.requestRenderAll(); + } + /** + * @param {Object} pointer + * @return {Point} Just added pointer point + */ + addPoint({ x, y }) { + const pointerPoint = { + x, + y, + radius: getRandomInt(Math.max(0, this.width - 20), this.width + 20) / 2, + fill: new Color(this.color).setAlpha(getRandomInt(0, 100) / 100).toRgba(), + }; + this.points.push(pointerPoint); + return pointerPoint; + } +} +fabric$1.CircleBrush = CircleBrush; +/** + * @todo remove transient + */ +const { Path, Shadow: Shadow$1 } = fabric$1; +/** + * @private + * @param {PathData} pathData SVG path commands + * @returns {boolean} + */ +function isEmptySVGPath(pathData) { + return joinPath(pathData) === 'M 0 0 Q 0 0 0 0 L 0 0'; +} +class PencilBrush extends BaseBrush { + constructor(canvas) { + super(canvas); + /** + * Discard points that are less than `decimate` pixel distant from each other + * @type Number + * @default 0.4 + */ + this.decimate = 0.4; + /** + * Draws a straight line between last recorded point to current pointer + * Used for `shift` functionality + * + * @type boolean + * @default false + */ + this.drawStraightLine = false; + /** + * The event modifier key that makes the brush draw a straight line. + * If `null` or 'none' or any other string that is not a modifier key the feature is disabled. + * @type {ModifierKey | undefined | null} + */ + this.straightLineKey = 'shiftKey'; + this._points = []; + this._hasStraightLine = false; + } + needsFullRender() { + return super.needsFullRender() || this._hasStraightLine; + } + static drawSegment(ctx, p1, p2) { + const midPoint = p1.midPointFrom(p2); + ctx.quadraticCurveTo(p1.x, p1.y, midPoint.x, midPoint.y); + return midPoint; + } /** - * Unlike superclass's version of this function, Textbox does not update - * its width. - * @private - * @override + * Invoked on mouse down + * @param {Point} pointer */ - initDimensions: function() { - if (this.__skipDimension) { - return; - } - this.isEditing && this.initDelayedCursor(); - this.clearContextTop(); - this._clearCache(); - // clear dynamicMinWidth as it will be different after we re-wrap line - this.dynamicMinWidth = 0; - // wrap lines - this._styleMap = this._generateStyleMap(this._splitText()); - // if after wrapping, the width is smaller than dynamicMinWidth, change the width and re-wrap - if (this.dynamicMinWidth > this.width) { - this._set('width', this.dynamicMinWidth); - } - if (this.textAlign.indexOf('justify') !== -1) { - // once text is measured we need to make space fatter to make justified text. - this.enlargeSpaces(); - } - // clear cache and re-calculate height - this.height = this.calcTextHeight(); - this.saveState({ propertySet: '_dimensionAffectingProps' }); - }, - + onMouseDown(pointer, { e }) { + if (!this.canvas._isMainEvent(e)) { + return; + } + this.drawStraightLine = !!this.straightLineKey && e[this.straightLineKey]; + this._prepareForDrawing(pointer); + // capture coordinates immediately + // this allows to draw dots (when movement never occurs) + this._addPoint(pointer); + this._render(); + } /** - * Generate an object that translates the style object so that it is - * broken up by visual lines (new lines and automatic wrapping). - * The original text styles object is broken up by actual lines (new lines only), - * which is only sufficient for Text / IText - * @private + * Invoked on mouse move + * @param {Point} pointer */ - _generateStyleMap: function(textInfo) { - var realLineCount = 0, - realLineCharCount = 0, - charCount = 0, - map = {}; - - for (var i = 0; i < textInfo.graphemeLines.length; i++) { - if (textInfo.graphemeText[charCount] === '\n' && i > 0) { - realLineCharCount = 0; - charCount++; - realLineCount++; + onMouseMove(pointer, { e }) { + if (!this.canvas._isMainEvent(e)) { + return; } - else if (!this.splitByGrapheme && this._reSpaceAndTab.test(textInfo.graphemeText[charCount]) && i > 0) { - // this case deals with space's that are removed from end of lines when wrapping - realLineCharCount++; - charCount++; + this.drawStraightLine = !!this.straightLineKey && e[this.straightLineKey]; + if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { + return; } - - map[i] = { line: realLineCount, offset: realLineCharCount }; - - charCount += textInfo.graphemeLines[i].length; - realLineCharCount += textInfo.graphemeLines[i].length; - } - - return map; - }, - + if (this._addPoint(pointer) && this._points.length > 1) { + if (this.needsFullRender()) { + // redraw curve + // clear top canvas + this.canvas.clearContext(this.canvas.contextTop); + this._render(); + } + else { + const points = this._points, length = points.length, ctx = this.canvas.contextTop; + // draw the curve update + this._saveAndTransform(ctx); + if (this.oldEnd) { + ctx.beginPath(); + ctx.moveTo(this.oldEnd.x, this.oldEnd.y); + } + this.oldEnd = PencilBrush.drawSegment(ctx, points[length - 2], points[length - 1]); + ctx.stroke(); + ctx.restore(); + } + } + } /** - * Returns true if object has a style property or has it on a specified line - * @param {Number} lineIndex - * @return {Boolean} + * Invoked on mouse up */ - styleHas: function(property, lineIndex) { - if (this._styleMap && !this.isWrapping) { - var map = this._styleMap[lineIndex]; - if (map) { - lineIndex = map.line; + onMouseUp({ e }) { + if (!this.canvas._isMainEvent(e)) { + return true; } - } - return fabric.Text.prototype.styleHas.call(this, property, lineIndex); - }, - + this.drawStraightLine = false; + this.oldEnd = undefined; + this._finalizeAndAddPath(); + return false; + } /** - * Returns true if object has no styling or no styling in a line - * @param {Number} lineIndex , lineIndex is on wrapped lines. - * @return {Boolean} + * @private + * @param {Point} pointer Actual mouse position related to the canvas. */ - isEmptyStyles: function(lineIndex) { - if (!this.styles) { - return true; - } - var offset = 0, nextLineIndex = lineIndex + 1, nextOffset, obj, shouldLimit = false, - map = this._styleMap[lineIndex], mapNextLine = this._styleMap[lineIndex + 1]; - if (map) { - lineIndex = map.line; - offset = map.offset; - } - if (mapNextLine) { - nextLineIndex = mapNextLine.line; - shouldLimit = nextLineIndex === lineIndex; - nextOffset = mapNextLine.offset; - } - obj = typeof lineIndex === 'undefined' ? this.styles : { line: this.styles[lineIndex] }; - for (var p1 in obj) { - for (var p2 in obj[p1]) { - if (p2 >= offset && (!shouldLimit || p2 < nextOffset)) { - // eslint-disable-next-line no-unused-vars - for (var p3 in obj[p1][p2]) { - return false; - } - } - } - } - return true; - }, - + _prepareForDrawing(pointer) { + this._reset(); + this._addPoint(pointer); + this.canvas.contextTop.moveTo(pointer.x, pointer.y); + } /** - * @param {Number} lineIndex - * @param {Number} charIndex * @private + * @param {Point} point Point to be added to points array */ - _getStyleDeclaration: function(lineIndex, charIndex) { - if (this._styleMap && !this.isWrapping) { - var map = this._styleMap[lineIndex]; - if (!map) { - return null; + _addPoint(point) { + if (this._points.length > 1 && + point.eq(this._points[this._points.length - 1])) { + return false; } - lineIndex = map.line; - charIndex = map.offset + charIndex; - } - return this.callSuper('_getStyleDeclaration', lineIndex, charIndex); - }, - + if (this.drawStraightLine && this._points.length > 1) { + this._hasStraightLine = true; + this._points.pop(); + } + this._points.push(point); + return true; + } /** - * @param {Number} lineIndex - * @param {Number} charIndex - * @param {Object} style + * Clear points array and set contextTop canvas style. * @private */ - _setStyleDeclaration: function(lineIndex, charIndex, style) { - var map = this._styleMap[lineIndex]; - lineIndex = map.line; - charIndex = map.offset + charIndex; - - this.styles[lineIndex][charIndex] = style; - }, - + _reset() { + this._points = []; + this._setBrushStyles(this.canvas.contextTop); + this._setShadow(); + this._hasStraightLine = false; + } /** - * @param {Number} lineIndex - * @param {Number} charIndex + * Draw a smooth path on the topCanvas using quadraticCurveTo * @private + * @param {CanvasRenderingContext2D} [ctx] */ - _deleteStyleDeclaration: function(lineIndex, charIndex) { - var map = this._styleMap[lineIndex]; - lineIndex = map.line; - charIndex = map.offset + charIndex; - delete this.styles[lineIndex][charIndex]; - }, - + _render(ctx = this.canvas.contextTop) { + let p1 = this._points[0], p2 = this._points[1]; + this._saveAndTransform(ctx); + ctx.beginPath(); + //if we only have 2 points in the path and they are the same + //it means that the user only clicked the canvas without moving the mouse + //then we should be drawing a dot. A path isn't drawn between two identical dots + //that's why we set them apart a bit + if (this._points.length === 2 && p1.x === p2.x && p1.y === p2.y) { + const width = this.width / 1000; + p1.x -= width; + p2.x += width; + } + ctx.moveTo(p1.x, p1.y); + for (let i = 1; i < this._points.length; i++) { + // we pick the point between pi + 1 & pi + 2 as the + // end point and p1 as our control point. + PencilBrush.drawSegment(ctx, p1, p2); + p1 = this._points[i]; + p2 = this._points[i + 1]; + } + // Draw last line as a straight line while + // we wait for the next point to be able to calculate + // the bezier control point + ctx.lineTo(p1.x, p1.y); + ctx.stroke(); + ctx.restore(); + } /** - * probably broken need a fix - * Returns the real style line that correspond to the wrapped lineIndex line - * Used just to verify if the line does exist or not. - * @param {Number} lineIndex - * @returns {Boolean} if the line exists or not - * @private + * Converts points to SVG path + * @param {Array} points Array of points + * @return {PathData} SVG path commands + */ + convertPointsToSVGPath(points) { + const correction = this.width / 1000; + return getSmoothPathFromPoints(points, correction); + } + /** + * Creates a Path object to add on canvas + * @param {PathData} pathData Path data + * @return {Path} Path to add on canvas + */ + createPath(pathData) { + const path = new Path(pathData, { + fill: null, + stroke: this.color, + strokeWidth: this.width, + strokeLineCap: this.strokeLineCap, + strokeMiterLimit: this.strokeMiterLimit, + strokeLineJoin: this.strokeLineJoin, + strokeDashArray: this.strokeDashArray, + }); + if (this.shadow) { + this.shadow.affectStroke = true; + path.shadow = new Shadow$1(this.shadow); + } + return path; + } + /** + * Decimate points array with the decimate value */ - _getLineStyle: function(lineIndex) { - var map = this._styleMap[lineIndex]; - return !!this.styles[map.line]; - }, - + decimatePoints(points, distance) { + if (points.length <= 2) { + return points; + } + let lastPoint = points[0], cDistance; + const zoom = this.canvas.getZoom(), adjustedDistance = Math.pow(distance / zoom, 2), l = points.length - 1, newPoints = [lastPoint]; + for (let i = 1; i < l - 1; i++) { + cDistance = + Math.pow(lastPoint.x - points[i].x, 2) + + Math.pow(lastPoint.y - points[i].y, 2); + if (cDistance >= adjustedDistance) { + lastPoint = points[i]; + newPoints.push(lastPoint); + } + } + // Add the last point from the original line to the end of the array. + // This ensures decimate doesn't delete the last point on the line, and ensures the line is > 1 point. + newPoints.push(points[l]); + return newPoints; + } /** - * Set the line style to an empty object so that is initialized - * @param {Number} lineIndex - * @param {Object} style - * @private + * On mouseup after drawing the path on contextTop canvas + * we use the points captured to create an new Path object + * and add it to the canvas. */ - _setLineStyle: function(lineIndex) { - var map = this._styleMap[lineIndex]; - this.styles[map.line] = {}; - }, + _finalizeAndAddPath() { + const ctx = this.canvas.contextTop; + ctx.closePath(); + if (this.decimate) { + this._points = this.decimatePoints(this._points, this.decimate); + } + const pathData = this.convertPointsToSVGPath(this._points); + if (isEmptySVGPath(pathData)) { + // do not create 0 width/height paths, as they are + // rendered inconsistently across browsers + // Firefox 4, for example, renders a dot, + // whereas Chrome 10 renders nothing + this.canvas.requestRenderAll(); + return; + } + const path = this.createPath(pathData); + this.canvas.clearContext(this.canvas.contextTop); + this.canvas.fire('before:path:created', { path: path }); + this.canvas.add(path); + this.canvas.requestRenderAll(); + path.setCoords(); + this._resetShadow(); + // fire event 'path' created + this.canvas.fire('path:created', { path: path }); + } +} +fabric$1.PencilBrush = PencilBrush; +/** + * @todo remove transient + */ +const { Pattern } = fabric$1; +class PatternBrush extends PencilBrush { + constructor(canvas) { + super(canvas); + } + getPatternSrc() { + const dotWidth = 20, dotDistance = 5, patternCanvas = createCanvasElement(), patternCtx = patternCanvas.getContext('2d'); + patternCanvas.width = patternCanvas.height = dotWidth + dotDistance; + if (patternCtx) { + patternCtx.fillStyle = this.color; + patternCtx.beginPath(); + patternCtx.arc(dotWidth / 2, dotWidth / 2, dotWidth / 2, 0, Math.PI * 2, false); + patternCtx.closePath(); + patternCtx.fill(); + } + return patternCanvas; + } + getPatternSrcFunction() { + return String(this.getPatternSrc).replace('this.color', '"' + this.color + '"'); + } /** - * Wraps text using the 'width' property of Textbox. First this function - * splits text on newlines, so we preserve newlines entered by the user. - * Then it wraps each line using the width of the Textbox by calling - * _wrapLine(). - * @param {Array} lines The string array of text that is split into lines - * @param {Number} desiredWidth width you want to wrap to - * @returns {Array} Array of lines - */ - _wrapText: function(lines, desiredWidth) { - var wrapped = [], i; - this.isWrapping = true; - for (i = 0; i < lines.length; i++) { - wrapped = wrapped.concat(this._wrapLine(lines[i], i, desiredWidth)); - } - this.isWrapping = false; - return wrapped; - }, - + * Creates "pattern" instance property + * @param {CanvasRenderingContext2D} ctx + */ + getPattern(ctx) { + return ctx.createPattern(this.source || this.getPatternSrc(), 'repeat'); + } /** - * Helper function to measure a string of text, given its lineIndex and charIndex offset - * it gets called when charBounds are not available yet. + * Sets brush styles * @param {CanvasRenderingContext2D} ctx - * @param {String} text - * @param {number} lineIndex - * @param {number} charOffset - * @returns {number} - * @private */ - _measureWord: function(word, lineIndex, charOffset) { - var width = 0, prevGrapheme, skipLeft = true; - charOffset = charOffset || 0; - for (var i = 0, len = word.length; i < len; i++) { - var box = this._getGraphemeBox(word[i], lineIndex, i + charOffset, prevGrapheme, skipLeft); - width += box.kernedWidth; - prevGrapheme = word[i]; - } - return width; - }, - + _setBrushStyles(ctx) { + super._setBrushStyles(ctx); + const pattern = this.getPattern(ctx); + pattern && (ctx.strokeStyle = pattern); + } /** - * Wraps a line of text using the width of the Textbox and a context. - * @param {Array} line The grapheme array that represent the line - * @param {Number} lineIndex - * @param {Number} desiredWidth width you want to wrap the line to - * @param {Number} reservedSpace space to remove from wrapping for custom functionalities - * @returns {Array} Array of line(s) into which the given text is wrapped - * to. - */ - _wrapLine: function(_line, lineIndex, desiredWidth, reservedSpace) { - var lineWidth = 0, - splitByGrapheme = this.splitByGrapheme, - graphemeLines = [], - line = [], - // spaces in different languages? - words = splitByGrapheme ? fabric.util.string.graphemeSplit(_line) : _line.split(this._wordJoiners), - word = '', - offset = 0, - infix = splitByGrapheme ? '' : ' ', - wordWidth = 0, - infixWidth = 0, - largestWordWidth = 0, - lineJustStarted = true, - additionalSpace = this._getWidthOfCharSpacing(), - reservedSpace = reservedSpace || 0; - // fix a difference between split and graphemeSplit - if (words.length === 0) { - words.push([]); - } - desiredWidth -= reservedSpace; - for (var i = 0; i < words.length; i++) { - // if using splitByGrapheme words are already in graphemes. - word = splitByGrapheme ? words[i] : fabric.util.string.graphemeSplit(words[i]); - wordWidth = this._measureWord(word, lineIndex, offset); - offset += word.length; - - lineWidth += infixWidth + wordWidth - additionalSpace; - if (lineWidth > desiredWidth && !lineJustStarted) { - graphemeLines.push(line); - line = []; - lineWidth = wordWidth; - lineJustStarted = true; - } - else { - lineWidth += additionalSpace; - } - - if (!lineJustStarted && !splitByGrapheme) { - line.push(infix); - } - line = line.concat(word); + * Creates path + */ + createPath(pathData) { + const path = super.createPath(pathData), topLeft = path._getLeftTopCoords().scalarAdd(path.strokeWidth / 2); + path.stroke = new Pattern({ + source: this.source || this.getPatternSrcFunction(), + offsetX: -topLeft.x, + offsetY: -topLeft.y, + }); + return path; + } +} +fabric$1.PatternBrush = PatternBrush; - infixWidth = splitByGrapheme ? 0 : this._measureWord([infix], lineIndex, offset); - offset++; - lineJustStarted = false; - // keep track of largest word - if (wordWidth > largestWordWidth) { - largestWordWidth = wordWidth; +/** + * @todo remove transient + */ +const { Group, Rect, Shadow } = fabric$1; +/** + * + * @param rects + * @returns + */ +function getUniqueRects(rects) { + const uniqueRects = {}; + const uniqueRectsArray = []; + for (let i = 0, key; i < rects.length; i++) { + key = `${rects[i].left}${rects[i].top}`; + if (!uniqueRects[key]) { + uniqueRects[key] = true; + uniqueRectsArray.push(rects[i]); } - } - - i && graphemeLines.push(line); - - if (largestWordWidth + reservedSpace > this.dynamicMinWidth) { - this.dynamicMinWidth = largestWordWidth - additionalSpace + reservedSpace; - } - return graphemeLines; - }, - + } + return uniqueRectsArray; +} +class SprayBrush extends BaseBrush { /** - * Detect if the text line is ended with an hard break - * text and itext do not have wrapping, return false - * @param {Number} lineIndex text to split - * @return {Boolean} + * Constructor + * @param {Canvas} canvas + * @return {SprayBrush} Instance of a spray brush + */ + constructor(canvas) { + super(canvas); + /** + * Width of a spray + * @type Number + * @default + */ + this.width = 10; + /** + * Density of a spray (number of dots per chunk) + * @type Number + * @default + */ + this.density = 20; + /** + * Width of spray dots + * @type Number + * @default + */ + this.dotWidth = 1; + /** + * Width variance of spray dots + * @type Number + * @default + */ + this.dotWidthVariance = 1; + /** + * Whether opacity of a dot should be random + * @type Boolean + * @default + */ + this.randomOpacity = false; + /** + * Whether overlapping dots (rectangles) should be removed (for performance reasons) + * @type Boolean + * @default + */ + this.optimizeOverlapping = true; + this.sprayChunks = []; + this.sprayChunk = []; + } + /** + * Invoked on mouse down + * @param {Point} pointer */ - isEndOfWrapping: function(lineIndex) { - if (!this._styleMap[lineIndex + 1]) { - // is last line, return true; - return true; - } - if (this._styleMap[lineIndex + 1].line !== this._styleMap[lineIndex].line) { - // this is last line before a line break, return true; - return true; - } - return false; - }, - + onMouseDown(pointer) { + this.sprayChunks = []; + this.canvas.clearContext(this.canvas.contextTop); + this._setShadow(); + this.addSprayChunk(pointer); + this.renderChunck(this.sprayChunk); + } /** - * Detect if a line has a linebreak and so we need to account for it when moving - * and counting style. - * @return Number + * Invoked on mouse move + * @param {Point} pointer */ - missingNewlineOffset: function(lineIndex) { - if (this.splitByGrapheme) { - return this.isEndOfWrapping(lineIndex) ? 1 : 0; - } - return 1; - }, - + onMouseMove(pointer) { + if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { + return; + } + this.addSprayChunk(pointer); + this.renderChunck(this.sprayChunk); + } /** - * Gets lines of text to render in the Textbox. This function calculates - * text wrapping on the fly every time it is called. - * @param {String} text text to split - * @returns {Array} Array of lines in the Textbox. - * @override - */ - _splitTextIntoLines: function(text) { - var newText = fabric.Text.prototype._splitTextIntoLines.call(this, text), - graphemeLines = this._wrapText(newText.lines, this.width), - lines = new Array(graphemeLines.length); - for (var i = 0; i < graphemeLines.length; i++) { - lines[i] = graphemeLines[i].join(''); - } - newText.lines = lines; - newText.graphemeLines = graphemeLines; - return newText; - }, - - getMinWidth: function() { - return Math.max(this.minWidth, this.dynamicMinWidth); - }, - - _removeExtraneousStyles: function() { - var linesToKeep = {}; - for (var prop in this._styleMap) { - if (this._textLines[prop]) { - linesToKeep[this._styleMap[prop].line] = 1; + * Invoked on mouse up + */ + onMouseUp() { + const originalRenderOnAddRemove = this.canvas.renderOnAddRemove; + this.canvas.renderOnAddRemove = false; + const rects = []; + for (let i = 0; i < this.sprayChunks.length; i++) { + const sprayChunk = this.sprayChunks[i]; + for (let j = 0; j < sprayChunk.length; j++) { + const chunck = sprayChunk[j]; + const rect = new Rect({ + width: chunck.width, + height: chunck.width, + left: chunck.x + 1, + top: chunck.y + 1, + originX: 'center', + originY: 'center', + fill: this.color, + }); + rects.push(rect); + } } - } - for (var prop in this.styles) { - if (!linesToKeep[prop]) { - delete this.styles[prop]; + const group = new Group(this.optimizeOverlapping ? getUniqueRects(rects) : rects, { + objectCaching: true, + layout: 'fixed', + subTargetCheck: false, + interactive: false, + }); + this.shadow && group.set('shadow', new Shadow(this.shadow)); + this.canvas.fire('before:path:created', { path: group }); + this.canvas.add(group); + this.canvas.fire('path:created', { path: group }); + this.canvas.clearContext(this.canvas.contextTop); + this._resetShadow(); + this.canvas.renderOnAddRemove = originalRenderOnAddRemove; + this.canvas.requestRenderAll(); + } + renderChunck(sprayChunck) { + const ctx = this.canvas.contextTop; + ctx.fillStyle = this.color; + this._saveAndTransform(ctx); + for (let i = 0; i < sprayChunck.length; i++) { + const point = sprayChunck[i]; + ctx.globalAlpha = point.opacity; + ctx.fillRect(point.x, point.y, point.width, point.width); } - } - }, - + ctx.restore(); + } /** - * Returns object representation of an instance - * @method toObject - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance + * Render all spray chunks */ - toObject: function(propertiesToInclude) { - return this.callSuper('toObject', ['minWidth', 'splitByGrapheme'].concat(propertiesToInclude)); + _render() { + const ctx = this.canvas.contextTop; + ctx.fillStyle = this.color; + this._saveAndTransform(ctx); + for (let i = 0; i < this.sprayChunks.length; i++) { + this.renderChunck(this.sprayChunks[i]); + } + ctx.restore(); } - }); - - /** - * Returns fabric.Textbox instance from an object representation - * @static - * @memberOf fabric.Textbox - * @param {Object} object Object to create an instance from - * @param {Function} [callback] Callback to invoke when an fabric.Textbox instance is created - */ - fabric.Textbox.fromObject = function(object, callback) { - return fabric.Object._fromObject('Textbox', object, callback, 'text'); - }; -})(typeof exports !== 'undefined' ? exports : this); - - -(function() { - - var controlsUtils = fabric.controlsUtils, - scaleSkewStyleHandler = controlsUtils.scaleSkewCursorStyleHandler, - scaleStyleHandler = controlsUtils.scaleCursorStyleHandler, - scalingEqually = controlsUtils.scalingEqually, - scalingYOrSkewingX = controlsUtils.scalingYOrSkewingX, - scalingXOrSkewingY = controlsUtils.scalingXOrSkewingY, - scaleOrSkewActionName = controlsUtils.scaleOrSkewActionName, - objectControls = fabric.Object.prototype.controls; - - objectControls.ml = new fabric.Control({ - x: -0.5, - y: 0, - cursorStyleHandler: scaleSkewStyleHandler, - actionHandler: scalingXOrSkewingY, - getActionName: scaleOrSkewActionName, - }); - - objectControls.mr = new fabric.Control({ - x: 0.5, - y: 0, - cursorStyleHandler: scaleSkewStyleHandler, - actionHandler: scalingXOrSkewingY, - getActionName: scaleOrSkewActionName, - }); - - objectControls.mb = new fabric.Control({ - x: 0, - y: 0.5, - cursorStyleHandler: scaleSkewStyleHandler, - actionHandler: scalingYOrSkewingX, - getActionName: scaleOrSkewActionName, - }); - - objectControls.mt = new fabric.Control({ - x: 0, - y: -0.5, - cursorStyleHandler: scaleSkewStyleHandler, - actionHandler: scalingYOrSkewingX, - getActionName: scaleOrSkewActionName, - }); - - objectControls.tl = new fabric.Control({ - x: -0.5, - y: -0.5, - cursorStyleHandler: scaleStyleHandler, - actionHandler: scalingEqually - }); - - objectControls.tr = new fabric.Control({ - x: 0.5, - y: -0.5, - cursorStyleHandler: scaleStyleHandler, - actionHandler: scalingEqually - }); - - objectControls.bl = new fabric.Control({ - x: -0.5, - y: 0.5, - cursorStyleHandler: scaleStyleHandler, - actionHandler: scalingEqually - }); - - objectControls.br = new fabric.Control({ - x: 0.5, - y: 0.5, - cursorStyleHandler: scaleStyleHandler, - actionHandler: scalingEqually - }); - - objectControls.mtr = new fabric.Control({ - x: 0, - y: -0.5, - actionHandler: controlsUtils.rotationWithSnapping, - cursorStyleHandler: controlsUtils.rotationStyleHandler, - offsetY: -40, - withConnection: true, - actionName: 'rotate', - }); - - if (fabric.Textbox) { - // this is breaking the prototype inheritance, no time / ideas to fix it. - // is important to document that if you want to have all objects to have a - // specific custom control, you have to add it to Object prototype and to Textbox - // prototype. The controls are shared as references. So changes to control `tr` - // can still apply to all objects if needed. - var textBoxControls = fabric.Textbox.prototype.controls = { }; - - textBoxControls.mtr = objectControls.mtr; - textBoxControls.tr = objectControls.tr; - textBoxControls.br = objectControls.br; - textBoxControls.tl = objectControls.tl; - textBoxControls.bl = objectControls.bl; - textBoxControls.mt = objectControls.mt; - textBoxControls.mb = objectControls.mb; - - textBoxControls.mr = new fabric.Control({ - x: 0.5, - y: 0, - actionHandler: controlsUtils.changeWidth, - cursorStyleHandler: scaleSkewStyleHandler, - actionName: 'resizing', - }); - - textBoxControls.ml = new fabric.Control({ - x: -0.5, - y: 0, - actionHandler: controlsUtils.changeWidth, - cursorStyleHandler: scaleSkewStyleHandler, - actionName: 'resizing', - }); - } -})(); - + /** + * @param {Point} pointer + */ + addSprayChunk(pointer) { + this.sprayChunk = []; + const radius = this.width / 2; + for (let i = 0; i < this.density; i++) { + this.sprayChunk.push({ + x: getRandomInt(pointer.x - radius, pointer.x + radius), + y: getRandomInt(pointer.y - radius, pointer.y + radius), + width: this.dotWidthVariance + ? getRandomInt( + // bottom clamp width to 1 + Math.max(1, this.dotWidth - this.dotWidthVariance), this.dotWidth + this.dotWidthVariance) + : this.dotWidth, + opacity: this.randomOpacity ? getRandomInt(0, 100) / 100 : 1, + }); + } + this.sprayChunks.push(this.sprayChunk); + } +} +fabric$1.SprayBrush = SprayBrush; +//# sourceMappingURL=fabric.js.map diff --git a/dist/fabric.js.map b/dist/fabric.js.map new file mode 100644 index 00000000000..07f4af54173 --- /dev/null +++ b/dist/fabric.js.map @@ -0,0 +1 @@ +{"version":3,"file":"fabric.js","sources":["../src/config.ts","../src/cache.ts","../src/constants.ts","../HEADER.js","../src/mixins/observable.mixin.ts","../src/mixins/collection.mixin.ts","../src/mixins/shared_methods.mixin.ts","../src/util/misc/cos.ts","../src/util/misc/sin.ts","../src/point.class.ts","../src/util/misc/vectors.ts","../src/util/misc/radiansDegreesConversion.ts","../src/util/misc/rotatePoint.ts","../src/util/internals/getRandomInt.ts","../src/util/internals/ifNaN.ts","../src/util/internals/removeFromArray.ts","../src/util/misc/projectStroke.ts","../node_modules/tslib/tslib.es6.js","../src/util/misc/matrix.ts","../src/util/lang_object.ts","../src/util/misc/textStyles.ts","../src/util/misc/dom.ts","../src/util/misc/toFixed.ts","../src/util/misc/svgParsing.ts","../src/util/misc/findScaleTo.ts","../src/util/misc/capValue.ts","../src/util/misc/boundingBoxFromPoints.ts","../src/util/misc/objectTransforms.ts","../src/util/misc/planeChange.ts","../src/util/lang_string.ts","../src/util/misc/objectEnlive.ts","../src/util/misc/pick.ts","../src/parser/getSvgRegex.ts","../src/parser/constants.ts","../src/util/path.ts","../src/util/dom_style.ts","../src/util/dom_request.ts","../src/util/dom_event.ts","../src/util/dom_misc.ts","../src/util/misc/isTransparent.ts","../src/util/misc/mergeClipPaths.ts","../src/util/anim_ease.ts","../src/color/color_map.ts","../src/color/constants.ts","../src/color/util.ts","../src/color/color.class.ts","../src/color/index.ts","../src/util/animation_registry.ts","../src/util/animate.ts","../src/util/animate_color.ts","../src/util/lang_class.ts","../src/util/misc/misc.ts","../src/parser/elements_parser.ts","../src/parser/getCSSRules.ts","../src/parser/getMultipleNodes.ts","../src/parser/elementById.ts","../src/parser/recursivelyParseGradientsXlink.ts","../src/parser/getGradientDefs.ts","../src/parser/applyViewboxTransform.ts","../src/parser/hasAncestorWithNodeName.ts","../src/parser/parseElements.ts","../src/parser/parseUseDirectives.ts","../src/parser/parseSVGDocument.ts","../src/parser/loadSVGFromString.ts","../src/parser/loadSVGFromURL.ts","../src/parser/selectorMatches.ts","../src/parser/doesSomeParentMatch.ts","../src/parser/elementMatchesRule.ts","../src/parser/getGlobalStylesForElement.ts","../src/parser/normalizeAttr.ts","../src/parser/rotateMatrix.ts","../src/parser/scaleMatrix.ts","../src/parser/skewMatrix.ts","../src/parser/translateMatrix.ts","../src/parser/parseTransformAttribute.ts","../src/parser/normalizeValue.ts","../src/parser/parseFontDeclaration.ts","../src/parser/parseStyleObject.ts","../src/parser/parseStyleString.ts","../src/parser/parseStyleAttribute.ts","../src/parser/setStrokeFillOpacity.ts","../src/parser/parseAttributes.ts","../src/parser/parsePointsAttribute.ts","../src/parser/index.ts","../src/intersection.class.ts","../src/gradient/constants.ts","../src/gradient/parser/misc.ts","../src/parser/percent.ts","../src/gradient/parser/parseColorStops.ts","../src/gradient/parser/parseCoords.ts","../src/gradient/gradient.class.ts","../src/pattern.class.ts","../src/shadow.class.ts","../src/static_canvas.class.ts","../src/canvas.class.ts","../src/util/fireEvent.ts","../src/mixins/canvas_events.mixin.ts","../src/mixins/canvas_grouping.mixin.ts","../src/mixins/canvas_dataurl_exporter.mixin.ts","../src/mixins/canvas_serialization.mixin.ts","../src/mixins/canvas_gestures.mixin.ts","../src/shapes/object.class.ts","../src/mixins/object_origin.mixin.ts","../src/mixins/object_geometry.mixin.ts","../src/mixins/object_ancestry.mixin.ts","../src/mixins/object_stacking.mixin.ts","../src/mixins/object.svg_export.ts","../src/mixins/stateful.mixin.ts","../src/mixins/object_interactivity.mixin.ts","../src/mixins/animation.mixin.ts","../src/shapes/line.class.ts","../src/shapes/circle.class.ts","../src/shapes/triangle.class.ts","../src/shapes/ellipse.class.ts","../src/shapes/rect.class.ts","../src/shapes/polyline.class.ts","../src/shapes/polygon.class.ts","../src/shapes/path.class.ts","../src/shapes/group.class.ts","../src/shapes/active_selection.class.ts","../src/shapes/image.class.ts","../src/mixins/object_straightening.mixin.ts","../src/filters/WebGLProbe.ts","../src/filters/webgl_backend.class.ts","../src/filters/2d_backend.class.ts","../src/filters/base_filter.class.ts","../src/filters/colormatrix_filter.class.ts","../src/filters/brightness_filter.class.ts","../src/filters/convolute_filter.class.ts","../src/filters/grayscale_filter.class.ts","../src/filters/invert_filter.class.ts","../src/filters/noise_filter.class.ts","../src/filters/pixelate_filter.class.ts","../src/filters/removecolor_filter.class.ts","../src/filters/filter_generator.ts","../src/filters/blendcolor_filter.class.ts","../src/filters/blendimage_filter.class.ts","../src/filters/resize_filter.class.ts","../src/filters/contrast_filter.class.ts","../src/filters/saturate_filter.class.ts","../src/filters/vibrance_filter.class.ts","../src/filters/blur_filter.class.ts","../src/filters/gamma_filter.class.ts","../src/filters/composed_filter.class.ts","../src/filters/hue_rotation.class.ts","../src/shapes/text.class.ts","../src/mixins/text_style.mixin.ts","../src/shapes/itext.class.ts","../src/mixins/itext_behavior.mixin.ts","../src/mixins/itext_click_behavior.mixin.ts","../src/mixins/itext_key_behavior.mixin.ts","../src/mixins/itext.svg_export.ts","../src/shapes/textbox.class.ts","../src/controls/controls.render.ts","../src/controls/control.class.ts","../src/controls/controls.actions.ts","../src/controls/default_controls.ts","../src/brushes/base_brush.class.ts","../src/brushes/circle_brush.class.ts","../src/brushes/pencil_brush.class.ts","../src/brushes/pattern_brush.class.ts","../src/brushes/spray_brush.class.ts"],"sourcesContent":["export type TConfiguration = Partial;\n\nclass BaseConfiguration {\n /**\n * Browser-specific constant to adjust CanvasRenderingContext2D.shadowBlur value,\n * which is unitless and not rendered equally across browsers.\n *\n * Values that work quite well (as of October 2017) are:\n * - Chrome: 1.5\n * - Edge: 1.75\n * - Firefox: 0.9\n * - Safari: 0.95\n *\n * @since 2.0.0\n * @type Number\n * @default 1\n */\n browserShadowBlurConstant = 1;\n\n /**\n * Pixel per Inch as a default value set to 96. Can be changed for more realistic conversion.\n */\n DPI = 96;\n\n /**\n * Device Pixel Ratio\n * @see https://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/HTML-canvas-guide/SettingUptheCanvas/SettingUptheCanvas.html\n */\n devicePixelRatio = 1;\n\n /**\n * Pixel limit for cache canvases. 1Mpx , 4Mpx should be fine.\n * @since 1.7.14\n * @type Number\n * @default\n */\n perfLimitSizeTotal = 2097152;\n\n /**\n * Pixel limit for cache canvases width or height. IE fixes the maximum at 5000\n * @since 1.7.14\n * @type Number\n * @default\n */\n maxCacheSideLimit = 4096;\n\n /**\n * Lowest pixel limit for cache canvases, set at 256PX\n * @since 1.7.14\n * @type Number\n * @default\n */\n minCacheSideLimit = 256;\n\n /**\n * When 'true', style information is not retained when copy/pasting text, making\n * pasted text use destination style.\n * Defaults to 'false'.\n * @type Boolean\n * @default\n * @deprecated\n */\n disableStyleCopyPaste = false;\n\n /**\n * Enable webgl for filtering picture is available\n * A filtering backend will be initialized, this will both take memory and\n * time since a default 2048x2048 canvas will be created for the gl context\n * @since 2.0.0\n * @type Boolean\n * @default\n */\n enableGLFiltering = true;\n\n /**\n * if webgl is enabled and available, textureSize will determine the size\n * of the canvas backend\n *\n * In order to support old hardware set to `2048` to avoid OOM\n *\n * @since 2.0.0\n * @type Number\n * @default\n */\n textureSize = 4096;\n\n /**\n * Skip performance testing of setupGLContext and force the use of putImageData that seems to be the one that works best on\n * Chrome + old hardware. if your users are experiencing empty images after filtering you may try to force this to true\n * this has to be set before instantiating the filtering backend ( before filtering the first image )\n * @type Boolean\n * @default false\n */\n forceGLPutImageData = false;\n\n /**\n * If disabled boundsOfCurveCache is not used. For apps that make heavy usage of pencil drawing probably disabling it is better\n * @default true\n */\n cachesBoundsOfCurve = true;\n\n /**\n * Map of font files\n * Map of font files\n */\n fontPaths: Record = {};\n\n /**\n * Defines the number of fraction digits to use when serializing object values.\n * Used in exporting methods (`toObject`, `toJSON`, `toSVG`)\n * You can use it to increase/decrease precision of such values like left, top, scaleX, scaleY, etc.\n */\n NUM_FRACTION_DIGITS = 4;\n}\n\nexport class Configuration extends BaseConfiguration {\n constructor(config?: TConfiguration) {\n super();\n this.configure(config);\n }\n\n configure(config: TConfiguration = {}) {\n Object.assign(this, config);\n }\n\n /**\n * Map of font files\n */\n addFonts(\n paths: Record = {}\n ) {\n this.fontPaths = {\n ...this.fontPaths,\n ...paths,\n };\n }\n\n removeFonts(fontFamilys: string[] = []) {\n fontFamilys.forEach((fontFamily) => {\n delete this.fontPaths[fontFamily];\n });\n }\n\n clearFonts() {\n this.fontPaths = {};\n }\n\n restoreDefaults(keys?: (keyof T)[]) {\n const defaults = new BaseConfiguration() as T;\n const config =\n keys?.reduce((acc, key) => {\n acc[key] = defaults[key];\n return acc;\n }, {} as T) || defaults;\n this.configure(config);\n }\n}\n\nexport const config = new Configuration();\n","import { config } from './config';\n\nexport class Cache {\n /**\n * Cache of widths of chars in text rendering.\n */\n charWidthsCache: Record<\n /** fontFamily */ string,\n Record<\n /** fontStyleCacheKey */ string,\n Record\n >\n > = {};\n\n /**\n * @return {Object} reference to cache\n */\n getFontCache({\n fontFamily,\n fontStyle,\n fontWeight,\n }: {\n fontFamily: string;\n fontStyle: string;\n fontWeight: string | number;\n }) {\n fontFamily = fontFamily.toLowerCase();\n if (!this.charWidthsCache[fontFamily]) {\n this.charWidthsCache[fontFamily] = {};\n }\n const fontCache = this.charWidthsCache[fontFamily];\n const cacheKey = `${fontStyle.toLowerCase()}_${(\n fontWeight + ''\n ).toLowerCase()}`;\n if (!fontCache[cacheKey]) {\n fontCache[cacheKey] = {};\n }\n return fontCache[cacheKey];\n }\n\n /**\n * Clear char widths cache for the given font family or all the cache if no\n * fontFamily is specified.\n * Use it if you know you are loading fonts in a lazy way and you are not waiting\n * for custom fonts to load properly when adding text objects to the canvas.\n * If a text object is added when its own font is not loaded yet, you will get wrong\n * measurement and so wrong bounding boxes.\n * After the font cache is cleared, either change the textObject text content or call\n * initDimensions() to trigger a recalculation\n * @memberOf fabric.util\n * @param {String} [fontFamily] font family to clear\n */\n clearFontCache(fontFamily?: string) {\n fontFamily = (fontFamily || '').toLowerCase();\n if (!fontFamily) {\n this.charWidthsCache = {};\n } else if (this.charWidthsCache[fontFamily]) {\n delete this.charWidthsCache[fontFamily];\n }\n }\n\n /**\n * Given current aspect ratio, determines the max width and height that can\n * respect the total allowed area for the cache.\n * @memberOf fabric.util\n * @param {number} ar aspect ratio\n * @return {number[]} Limited dimensions X and Y\n */\n limitDimsByArea(ar: number) {\n const { perfLimitSizeTotal } = config;\n const roughWidth = Math.sqrt(perfLimitSizeTotal * ar);\n // we are not returning a point on purpose, to avoid circular dependencies\n // this is an internal utility\n return [\n Math.floor(roughWidth),\n Math.floor(perfLimitSizeTotal / roughWidth),\n ];\n }\n\n /**\n * This object contains the result of arc to bezier conversion for faster retrieving if the same arc needs to be converted again.\n * It was an internal variable, is accessible since version 2.3.4\n */\n arcToSegmentsCache = {};\n\n /**\n * This object keeps the results of the boundsOfCurve calculation mapped by the joined arguments necessary to calculate it.\n * It does speed up calculation, if you parse and add always the same paths, but in case of heavy usage of freedrawing\n * you do not get any speed benefit and you get a big object in memory.\n * The object was a private variable before, while now is appended to the lib so that you have access to it and you\n * can eventually clear it.\n * It was an internal variable, is accessible since version 2.3.4\n */\n boundsOfCurveCache = {};\n}\n\nexport const cache = new Cache();\n","import { TMat2D } from './typedefs';\n\nexport { version as VERSION } from '../package.json';\nexport function noop() {}\nexport const halfPI = Math.PI / 2;\nexport const twoMathPi = Math.PI * 2;\nexport const PiBy180 = Math.PI / 180;\nexport const iMatrix = Object.freeze([1, 0, 0, 1, 0, 0]) as TMat2D;\nexport const DEFAULT_SVG_FONT_SIZE = 16;\n\n/* \"magic number\" for bezier approximations of arcs (http://itc.ktu.lt/itc354/Riskus354.pdf) */\nexport const kRect = 1 - 0.5522847498;\n","import { cache } from './src/cache';\nimport { config } from './src/config';\nimport { iMatrix, VERSION } from './src/constants';\n\nvar fabric = fabric || {\n version: VERSION,\n config,\n cache,\n iMatrix,\n};\n\nif (typeof exports !== 'undefined') {\n exports.fabric = fabric;\n} else if (typeof define === 'function' && define.amd) {\n /* _AMD_START_ */\n define([], function () {\n return fabric;\n });\n}\n/* _AMD_END_ */\nif (typeof document !== 'undefined' && typeof window !== 'undefined') {\n if (\n document instanceof\n (typeof HTMLDocument !== 'undefined' ? HTMLDocument : Document)\n ) {\n fabric.document = document;\n } else {\n fabric.document = document.implementation.createHTMLDocument('');\n }\n fabric.window = window;\n window.fabric = fabric;\n} else {\n // assume we're running under node.js when document/window are not present\n var jsdom = require('jsdom');\n var virtualWindow = new jsdom.JSDOM(\n decodeURIComponent(\n '%3C!DOCTYPE%20html%3E%3Chtml%3E%3Chead%3E%3C%2Fhead%3E%3Cbody%3E%3C%2Fbody%3E%3C%2Fhtml%3E'\n ),\n {\n features: {\n FetchExternalResources: ['img'],\n },\n resources: 'usable',\n }\n ).window;\n fabric.document = virtualWindow.document;\n fabric.jsdomImplForWrapper =\n require('jsdom/lib/jsdom/living/generated/utils').implForWrapper;\n fabric.nodeCanvas = require('jsdom/lib/jsdom/utils').Canvas;\n fabric.window = virtualWindow;\n global.DOMParser = fabric.window.DOMParser;\n}\n\n/**\n * True when in environment that supports touch events\n * @type boolean\n */\nfabric.isTouchSupported =\n 'ontouchstart' in fabric.window ||\n 'ontouchstart' in fabric.document ||\n (fabric.window &&\n fabric.window.navigator &&\n fabric.window.navigator.maxTouchPoints > 0);\n\n/**\n * True when in environment that's probably Node.js\n * @type boolean\n */\nfabric.isLikelyNode =\n typeof Buffer !== 'undefined' && typeof window === 'undefined';\n\n/* _FROM_SVG_START_ */\n/**\n * Attributes parsed from all SVG elements\n * @type array\n */\nfabric.SHARED_ATTRIBUTES = [\n 'display',\n 'transform',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'opacity',\n 'stroke',\n 'stroke-dasharray',\n 'stroke-linecap',\n 'stroke-dashoffset',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke-width',\n 'id',\n 'paint-order',\n 'vector-effect',\n 'instantiated_by_use',\n 'clip-path',\n];\n/* _FROM_SVG_END_ */\n\n/**\n * @todo move to config when window is exported\n */\nconfig.configure({\n devicePixelRatio:\n fabric.window.devicePixelRatio ||\n fabric.window.webkitDevicePixelRatio ||\n fabric.window.mozDevicePixelRatio ||\n 1,\n});\n\nexport { fabric };\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n\n /**\n * @private\n * @param {String} eventName\n * @param {Function} handler\n */\n function _removeEventListener(eventName, handler) {\n if (!this.__eventListeners[eventName]) {\n return;\n }\n var eventListener = this.__eventListeners[eventName];\n if (handler) {\n eventListener[eventListener.indexOf(handler)] = false;\n } else {\n eventListener.fill(false);\n }\n }\n\n /**\n * Observes specified event\n * @memberOf fabric.Observable\n * @alias on\n * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler})\n * @param {Function} handler Function that receives a notification when an event of the specified type occurs\n * @return {Function} disposer\n */\n function on(eventName, handler) {\n if (!this.__eventListeners) {\n this.__eventListeners = {};\n }\n // one object with key/value pairs was passed\n if (arguments.length === 1) {\n for (var prop in eventName) {\n this.on(prop, eventName[prop]);\n }\n } else {\n if (!this.__eventListeners[eventName]) {\n this.__eventListeners[eventName] = [];\n }\n this.__eventListeners[eventName].push(handler);\n }\n return off.bind(this, eventName, handler);\n }\n\n function _once(eventName, handler) {\n var _handler = function () {\n handler.apply(this, arguments);\n this.off(eventName, _handler);\n }.bind(this);\n this.on(eventName, _handler);\n return _handler;\n }\n\n /**\n * Observes specified event **once**\n * @memberOf fabric.Observable\n * @alias once\n * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler})\n * @param {Function} handler Function that receives a notification when an event of the specified type occurs\n * @return {Function} disposer\n */\n function once(eventName, handler) {\n // one object with key/value pairs was passed\n if (arguments.length === 1) {\n var handlers = {};\n for (var prop in eventName) {\n handlers[prop] = _once.call(this, prop, eventName[prop]);\n }\n return off.bind(this, handlers);\n } else {\n var _handler = _once.call(this, eventName, handler);\n return off.bind(this, eventName, _handler);\n }\n }\n\n /**\n * Stops event observing for a particular event handler. Calling this method\n * without arguments removes all handlers for all events\n * @memberOf fabric.Observable\n * @alias off\n * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler})\n * @param {Function} handler Function to be deleted from EventListeners\n */\n function off(eventName, handler) {\n if (!this.__eventListeners) {\n return;\n }\n\n // remove all key/value pairs (event name -> event handler)\n if (arguments.length === 0) {\n for (eventName in this.__eventListeners) {\n _removeEventListener.call(this, eventName);\n }\n }\n // one object with key/value pairs was passed\n else if (typeof eventName === 'object' && typeof handler === 'undefined') {\n for (var prop in eventName) {\n _removeEventListener.call(this, prop, eventName[prop]);\n }\n } else {\n _removeEventListener.call(this, eventName, handler);\n }\n }\n\n /**\n * Fires event with an optional options object\n * @memberOf fabric.Observable\n * @param {String} eventName Event name to fire\n * @param {Object} [options] Options object\n */\n function fire(eventName, options) {\n if (!this.__eventListeners) {\n return;\n }\n\n var listenersForEvent = this.__eventListeners[eventName];\n if (!listenersForEvent) {\n return;\n }\n\n for (var i = 0, len = listenersForEvent.length; i < len; i++) {\n listenersForEvent[i] && listenersForEvent[i].call(this, options || {});\n }\n this.__eventListeners[eventName] = listenersForEvent.filter(function (\n value\n ) {\n return value !== false;\n });\n }\n\n /**\n * @namespace fabric.Observable\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#events}\n * @see {@link http://fabricjs.com/events|Events demo}\n */\n fabric.Observable = {\n fire: fire,\n on: on,\n once: once,\n off: off,\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n /**\n * @namespace fabric.Collection\n */\n fabric.Collection = {\n /**\n * @type {fabric.Object[]}\n */\n _objects: [],\n\n /**\n * Adds objects to collection, Canvas or Group, then renders canvas\n * (if `renderOnAddRemove` is not `false`).\n * Objects should be instances of (or inherit from) fabric.Object\n * @private\n * @param {fabric.Object[]} objects to add\n * @param {(object:fabric.Object) => any} [callback]\n * @returns {number} new array length\n */\n add: function (objects, callback) {\n var size = this._objects.push.apply(this._objects, objects);\n if (callback) {\n for (var i = 0; i < objects.length; i++) {\n callback.call(this, objects[i]);\n }\n }\n return size;\n },\n\n /**\n * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`)\n * An object should be an instance of (or inherit from) fabric.Object\n * @private\n * @param {fabric.Object|fabric.Object[]} objects Object(s) to insert\n * @param {Number} index Index to insert object at\n * @param {(object:fabric.Object) => any} [callback]\n * @returns {number} new array length\n */\n insertAt: function (objects, index, callback) {\n var args = [index, 0].concat(objects);\n this._objects.splice.apply(this._objects, args);\n if (callback) {\n for (var i = 2; i < args.length; i++) {\n callback.call(this, args[i]);\n }\n }\n return this._objects.length;\n },\n\n /**\n * Removes objects from a collection, then renders canvas (if `renderOnAddRemove` is not `false`)\n * @private\n * @param {fabric.Object[]} objectsToRemove objects to remove\n * @param {(object:fabric.Object) => any} [callback] function to call for each object removed\n * @returns {fabric.Object[]} removed objects\n */\n remove: function (objectsToRemove, callback) {\n var objects = this._objects,\n removed = [];\n for (var i = 0, object, index; i < objectsToRemove.length; i++) {\n object = objectsToRemove[i];\n index = objects.indexOf(object);\n // only call onObjectRemoved if an object was actually removed\n if (index !== -1) {\n objects.splice(index, 1);\n removed.push(object);\n callback && callback.call(this, object);\n }\n }\n return removed;\n },\n\n /**\n * Executes given function for each object in this group\n * @param {Function} callback\n * Callback invoked with current object as first argument,\n * index - as second and an array of all objects - as third.\n * Callback is invoked in a context of Global Object (e.g. `window`)\n * when no `context` argument is given\n *\n * @param {Object} context Context (aka thisObject)\n * @return {Self} thisArg\n * @chainable\n */\n forEachObject: function (callback, context) {\n var objects = this.getObjects();\n for (var i = 0; i < objects.length; i++) {\n callback.call(context, objects[i], i, objects);\n }\n return this;\n },\n\n /**\n * Returns an array of children objects of this instance\n * @param {...String} [types] When specified, only objects of these types are returned\n * @return {Array}\n */\n getObjects: function () {\n if (arguments.length === 0) {\n return this._objects.concat();\n }\n var types = Array.from(arguments);\n return this._objects.filter(function (o) {\n return types.indexOf(o.type) > -1;\n });\n },\n\n /**\n * Returns object at specified index\n * @param {Number} index\n * @return {Object} object at index\n */\n item: function (index) {\n return this._objects[index];\n },\n\n /**\n * Returns true if collection contains no objects\n * @return {Boolean} true if collection is empty\n */\n isEmpty: function () {\n return this._objects.length === 0;\n },\n\n /**\n * Returns a size of a collection (i.e: length of an array containing its objects)\n * @return {Number} Collection size\n */\n size: function () {\n return this._objects.length;\n },\n\n /**\n * Returns true if collection contains an object.\\\n * **Prefer using {@link `fabric.Object#isDescendantOf`} for performance reasons**\n * instead of a.contains(b) use b.isDescendantOf(a)\n * @param {Object} object Object to check against\n * @param {Boolean} [deep=false] `true` to check all descendants, `false` to check only `_objects`\n * @return {Boolean} `true` if collection contains an object\n */\n contains: function (object, deep) {\n if (this._objects.indexOf(object) > -1) {\n return true;\n } else if (deep) {\n return this._objects.some(function (obj) {\n return (\n typeof obj.contains === 'function' && obj.contains(object, true)\n );\n });\n }\n return false;\n },\n\n /**\n * Returns number representation of a collection complexity\n * @return {Number} complexity\n */\n complexity: function () {\n return this._objects.reduce(function (memo, current) {\n memo += current.complexity ? current.complexity() : 0;\n return memo;\n }, 0);\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n /**\n * @namespace fabric.CommonMethods\n */\n fabric.CommonMethods = {\n /**\n * Sets object's properties from options\n * @param {Object} [options] Options object\n */\n _setOptions: function (options) {\n for (var prop in options) {\n this.set(prop, options[prop]);\n }\n },\n\n /**\n * @private\n */\n _setObject: function (obj) {\n for (var prop in obj) {\n this._set(prop, obj[prop]);\n }\n },\n\n /**\n * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`.\n * @param {String|Object} key Property name or object (if object, iterate over the object properties)\n * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one)\n * @return {fabric.Object} thisArg\n * @chainable\n */\n set: function (key, value) {\n if (typeof key === 'object') {\n this._setObject(key);\n } else {\n this._set(key, value);\n }\n return this;\n },\n\n _set: function (key, value) {\n this[key] = value;\n },\n\n /**\n * Toggles specified property from `true` to `false` or from `false` to `true`\n * @param {String} property Property to toggle\n * @return {fabric.Object} thisArg\n * @chainable\n */\n toggle: function (property) {\n var value = this.get(property);\n if (typeof value === 'boolean') {\n this.set(property, !value);\n }\n return this;\n },\n\n /**\n * Basic getter\n * @param {String} property Property name\n * @return {*} value of a property\n */\n get: function (property) {\n return this[property];\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","import type { TRadian } from '../../typedefs';\nimport { halfPI } from '../../constants';\n\n/**\n * Calculate the cos of an angle, avoiding returning floats for known results\n * This function is here just to avoid getting 0.999999999999999 when dealing\n * with numbers that are really 1 or 0.\n * @static\n * @memberOf fabric.util\n * @param {TRadian} angle the angle\n * @return {Number} the cosin value for angle.\n */\nexport const cos = (angle: TRadian): number => {\n if (angle === 0) {\n return 1;\n }\n const angleSlice = Math.abs(angle) / halfPI;\n switch (angleSlice) {\n case 1:\n case 3:\n return 0;\n case 2:\n return -1;\n }\n return Math.cos(angle);\n};\n","import type { TRadian } from '../../typedefs';\nimport { halfPI } from '../../constants';\n\n/**\n * Calculate the cos of an angle, avoiding returning floats for known results\n * This function is here just to avoid getting 0.999999999999999 when dealing\n * with numbers that are really 1 or 0.\n * @static\n * @memberOf fabric.util\n * @param {TRadian} angle the angle\n * @return {Number} the sin value for angle.\n */\nexport const sin = (angle: TRadian): number => {\n if (angle === 0) {\n return 0;\n }\n const angleSlice = angle / halfPI;\n const value = Math.sign(angle);\n switch (angleSlice) {\n case 1:\n return value;\n case 2:\n return 0;\n case 3:\n return -value;\n }\n return Math.sin(angle);\n};\n","import { fabric } from '../HEADER';\nimport { TMat2D, TRadian } from './typedefs';\nimport { sin } from './util/misc/sin';\nimport { cos } from './util/misc/cos';\n\nexport interface IPoint {\n x: number;\n y: number;\n}\n\n/**\n * Adaptation of work of Kevin Lindsey(kevin@kevlindev.com)\n */\nexport class Point {\n x: number;\n\n y: number;\n\n type = 'point';\n\n constructor();\n constructor(x: number, y: number);\n constructor(point: IPoint);\n constructor(arg0: number | IPoint = 0, y = 0) {\n if (typeof arg0 === 'object') {\n this.x = arg0.x;\n this.y = arg0.y;\n } else {\n this.x = arg0;\n this.y = y;\n }\n }\n\n /**\n * Adds another point to this one and returns another one\n * @param {Point} that\n * @return {Point} new Point instance with added values\n */\n add(that: IPoint): Point {\n return new Point(this.x + that.x, this.y + that.y);\n }\n\n /**\n * Adds another point to this one\n * @param {Point} that\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n addEquals(that: IPoint): Point {\n this.x += that.x;\n this.y += that.y;\n return this;\n }\n\n /**\n * Adds value to this point and returns a new one\n * @param {Number} scalar\n * @return {Point} new Point with added value\n */\n scalarAdd(scalar: number): Point {\n return new Point(this.x + scalar, this.y + scalar);\n }\n\n /**\n * Adds value to this point\n * @param {Number} scalar\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n scalarAddEquals(scalar: number): Point {\n this.x += scalar;\n this.y += scalar;\n return this;\n }\n\n /**\n * Subtracts another point from this point and returns a new one\n * @param {Point} that\n * @return {Point} new Point object with subtracted values\n */\n subtract(that: IPoint): Point {\n return new Point(this.x - that.x, this.y - that.y);\n }\n\n /**\n * Subtracts another point from this point\n * @param {Point} that\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n subtractEquals(that: IPoint): Point {\n this.x -= that.x;\n this.y -= that.y;\n return this;\n }\n\n /**\n * Subtracts value from this point and returns a new one\n * @param {Number} scalar\n * @return {Point}\n */\n scalarSubtract(scalar: number): Point {\n return new Point(this.x - scalar, this.y - scalar);\n }\n\n /**\n * Subtracts value from this point\n * @param {Number} scalar\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n scalarSubtractEquals(scalar: number): Point {\n this.x -= scalar;\n this.y -= scalar;\n return this;\n }\n\n /**\n * Multiplies this point by another value and returns a new one\n * @param {Point} that\n * @return {Point}\n */\n multiply(that: Point): Point {\n return new Point(this.x * that.x, this.y * that.y);\n }\n\n /**\n * Multiplies this point by a value and returns a new one\n * @param {Number} scalar\n * @return {Point}\n */\n scalarMultiply(scalar: number): Point {\n return new Point(this.x * scalar, this.y * scalar);\n }\n\n /**\n * Multiplies this point by a value\n * @param {Number} scalar\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n scalarMultiplyEquals(scalar: number): Point {\n this.x *= scalar;\n this.y *= scalar;\n return this;\n }\n\n /**\n * Divides this point by another and returns a new one\n * @param {Point} that\n * @return {Point}\n */\n divide(that: IPoint): Point {\n return new Point(this.x / that.x, this.y / that.y);\n }\n\n /**\n * Divides this point by a value and returns a new one\n * @param {Number} scalar\n * @return {Point}\n */\n scalarDivide(scalar: number): Point {\n return new Point(this.x / scalar, this.y / scalar);\n }\n\n /**\n * Divides this point by a value\n * @param {Number} scalar\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n scalarDivideEquals(scalar: number): Point {\n this.x /= scalar;\n this.y /= scalar;\n return this;\n }\n\n /**\n * Returns true if this point is equal to another one\n * @param {Point} that\n * @return {Boolean}\n */\n eq(that: IPoint): boolean {\n return this.x === that.x && this.y === that.y;\n }\n\n /**\n * Returns true if this point is less than another one\n * @param {Point} that\n * @return {Boolean}\n */\n lt(that: IPoint): boolean {\n return this.x < that.x && this.y < that.y;\n }\n\n /**\n * Returns true if this point is less than or equal to another one\n * @param {Point} that\n * @return {Boolean}\n */\n lte(that: IPoint): boolean {\n return this.x <= that.x && this.y <= that.y;\n }\n\n /**\n\n * Returns true if this point is greater another one\n * @param {Point} that\n * @return {Boolean}\n */\n gt(that: IPoint): boolean {\n return this.x > that.x && this.y > that.y;\n }\n\n /**\n * Returns true if this point is greater than or equal to another one\n * @param {Point} that\n * @return {Boolean}\n */\n gte(that: IPoint): boolean {\n return this.x >= that.x && this.y >= that.y;\n }\n\n /**\n * Returns new point which is the result of linear interpolation with this one and another one\n * @param {Point} that\n * @param {Number} t , position of interpolation, between 0 and 1 default 0.5\n * @return {Point}\n */\n lerp(that: IPoint, t = 0.5): Point {\n t = Math.max(Math.min(1, t), 0);\n return new Point(\n this.x + (that.x - this.x) * t,\n this.y + (that.y - this.y) * t\n );\n }\n\n /**\n * Returns distance from this point and another one\n * @param {Point} that\n * @return {Number}\n */\n distanceFrom(that: IPoint): number {\n const dx = this.x - that.x,\n dy = this.y - that.y;\n return Math.sqrt(dx * dx + dy * dy);\n }\n\n /**\n * Returns the point between this point and another one\n * @param {Point} that\n * @return {Point}\n */\n midPointFrom(that: IPoint): Point {\n return this.lerp(that);\n }\n\n /**\n * Returns a new point which is the min of this and another one\n * @param {Point} that\n * @return {Point}\n */\n min(that: IPoint): Point {\n return new Point(Math.min(this.x, that.x), Math.min(this.y, that.y));\n }\n\n /**\n * Returns a new point which is the max of this and another one\n * @param {Point} that\n * @return {Point}\n */\n max(that: IPoint): Point {\n return new Point(Math.max(this.x, that.x), Math.max(this.y, that.y));\n }\n\n /**\n * Returns string representation of this point\n * @return {String}\n */\n toString(): string {\n return this.x + ',' + this.y;\n }\n\n /**\n * Sets x/y of this point\n * @param {Number} x\n * @param {Number} y\n * @chainable\n */\n setXY(x: number, y: number) {\n this.x = x;\n this.y = y;\n return this;\n }\n\n /**\n * Sets x of this point\n * @param {Number} x\n * @chainable\n */\n setX(x: number) {\n this.x = x;\n return this;\n }\n\n /**\n * Sets y of this point\n * @param {Number} y\n * @chainable\n */\n setY(y: number) {\n this.y = y;\n return this;\n }\n\n /**\n * Sets x/y of this point from another point\n * @param {Point} that\n * @chainable\n */\n setFromPoint(that: Point) {\n this.x = that.x;\n this.y = that.y;\n return this;\n }\n\n /**\n * Swaps x/y of this point and another point\n * @param {Point} that\n */\n swap(that: Point) {\n const x = this.x,\n y = this.y;\n this.x = that.x;\n this.y = that.y;\n that.x = x;\n that.y = y;\n }\n\n /**\n * return a cloned instance of the point\n * @return {Point}\n */\n clone(): Point {\n return new Point(this.x, this.y);\n }\n\n /**\n * Rotates `point` around `origin` with `radians`\n * @static\n * @memberOf fabric.util\n * @param {Point} origin The origin of the rotation\n * @param {TRadian} radians The radians of the angle for the rotation\n * @return {Point} The new rotated point\n */\n rotate(radians: TRadian, origin: Point = originZero): Point {\n // TODO benchmark and verify the add and subtract how much cost\n // and then in case early return if no origin is passed\n const sinus = sin(radians),\n cosinus = cos(radians);\n const p = this.subtract(origin);\n const rotated = new Point(\n p.x * cosinus - p.y * sinus,\n p.x * sinus + p.y * cosinus\n );\n return rotated.add(origin);\n }\n\n /**\n * Apply transform t to point p\n * @static\n * @memberOf fabric.util\n * @param {TMat2D} t The transform\n * @param {Boolean} [ignoreOffset] Indicates that the offset should not be applied\n * @return {Point} The transformed point\n */\n transform(t: TMat2D, ignoreOffset = false): Point {\n return new Point(\n t[0] * this.x + t[2] * this.y + (ignoreOffset ? 0 : t[4]),\n t[1] * this.x + t[3] * this.y + (ignoreOffset ? 0 : t[5])\n );\n }\n}\n\nconst originZero = new Point(0, 0);\n\nfabric.Point = Point;\n","import { IPoint, Point } from '../../point.class';\nimport { TRadian } from '../../typedefs';\n\n/**\n * Rotates `vector` with `radians`\n * @static\n * @memberOf fabric.util\n * @param {Point} vector The vector to rotate (x and y)\n * @param {Number} radians The radians of the angle for the rotation\n * @return {Point} The new rotated point\n */\nexport const rotateVector = (vector: Point, radians: TRadian) =>\n vector.rotate(radians);\n\n/**\n * Creates a vetor from points represented as a point\n * @static\n * @memberOf fabric.util\n *\n * @param {Point} from\n * @param {Point} to\n * @returns {Point} vector\n */\nexport const createVector = (from: Point | IPoint, to: Point): Point =>\n new Point(to).subtract(from);\n\n/**\n * Calculates angle between 2 vectors using dot product\n * @static\n * @memberOf fabric.util\n * @param {Point} a\n * @param {Point} b\n * @returns the angle in radian between the vectors\n */\nexport const calcAngleBetweenVectors = (a: Point, b: Point): TRadian =>\n Math.acos(\n (a.x * b.x + a.y * b.y) / (Math.hypot(a.x, a.y) * Math.hypot(b.x, b.y))\n ) as TRadian;\n\n/**\n * @static\n * @memberOf fabric.util\n * @param {Point} v\n * @returns {Point} vector representing the unit vector of pointing to the direction of `v`\n */\nexport const getHatVector = (v: Point): Point =>\n v.scalarMultiply(1 / Math.hypot(v.x, v.y));\n\n/**\n * @static\n * @memberOf fabric.util\n * @param {Point} A\n * @param {Point} B\n * @param {Point} C\n * @returns {{ vector: Point, angle: number }} vector representing the bisector of A and A's angle\n */\nexport const getBisector = (a: Point, b: Point, c: Point) => {\n const ab = createVector(a, b),\n ac = createVector(a, c);\n const alpha = calcAngleBetweenVectors(ab, ac);\n // check if alpha is relative to AB->BC\n const ro = calcAngleBetweenVectors(rotateVector(ab, alpha), ac);\n const phi = ((alpha * (ro === 0 ? 1 : -1)) / 2) as TRadian;\n return {\n vector: getHatVector(rotateVector(ab, phi)),\n angle: alpha,\n };\n};\n","import type { TRadian, TDegree } from '../../typedefs';\nimport { PiBy180 } from '../../constants';\n\n/**\n * Transforms degrees to radians.\n * @static\n * @memberOf fabric.util\n * @param {TDegree} degrees value in degrees\n * @return {TRadian} value in radians\n */\nexport const degreesToRadians = (degrees: TDegree): TRadian =>\n (degrees * PiBy180) as TRadian;\n\n/**\n * Transforms radians to degrees.\n * @static\n * @memberOf fabric.util\n * @param {TRadian} radians value in radians\n * @return {TDegree} value in degrees\n */\nexport const radiansToDegrees = (radians: TRadian): TDegree =>\n (radians / PiBy180) as TDegree;\n","import type { Point } from '../../point.class';\nimport type { TRadian } from '../../typedefs';\n/**\n * Rotates `point` around `origin` with `radians`\n * @static\n * @deprecated use the Point.rotate\n * @memberOf fabric.util\n * @param {Point} origin The origin of the rotation\n * @param {Point} origin The origin of the rotation\n * @param {TRadian} radians The radians of the angle for the rotation\n * @return {Point} The new rotated point\n */\nexport const rotatePoint = (\n point: Point,\n origin: Point,\n radians: TRadian\n): Point => point.rotate(radians, origin);\n","/**\n * Returns random number between 2 specified ones.\n * @static\n * @memberOf fabric.util\n * @param {Number} min lower limit\n * @param {Number} max upper limit\n * @return {Number} random value (between min and max)\n */\nexport const getRandomInt = (min: number, max: number): number =>\n Math.floor(Math.random() * (max - min + 1)) + min;\n","/**\n *\n * @param value value to check if NaN\n * @param [valueIfNaN]\n * @returns `fallback` is `value is NaN\n */\nexport const ifNaN = (value: number, valueIfNaN?: number) => {\n return isNaN(value) && typeof valueIfNaN === 'number' ? valueIfNaN : value;\n};\n","/**\n * Removes value from an array.\n * Presence of value (and its position in an array) is determined via `Array.prototype.indexOf`\n * @static\n * @memberOf fabric.util\n * @param {Array} array\n * @param {*} value\n * @return {Array} original array\n */\nexport const removeFromArray = (array: T[], value: T): T[] => {\n const idx = array.indexOf(value);\n if (idx !== -1) {\n array.splice(idx, 1);\n }\n return array;\n};\n","import { Point } from '../../point.class';\nimport { createVector, getBisector } from './vectors';\nimport { StrokeLineJoin } from '../../typedefs';\n/**\n * Project stroke width on points returning 2 projections for each point as follows:\n * - `miter`: 2 points corresponding to the outer boundary and the inner boundary of stroke.\n * - `bevel`: 2 points corresponding to the bevel boundaries, tangent to the bisector.\n * - `round`: same as `bevel`\n * Used to calculate object's bounding box\n * @static\n * @memberOf fabric.util\n * @param {Point[]} points\n * @param {Object} options\n * @param {number} options.strokeWidth\n * @param {'miter'|'bevel'|'round'} options.strokeLineJoin\n * @param {number} options.strokeMiterLimit https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit\n * @param {boolean} options.strokeUniform\n * @param {number} options.scaleX\n * @param {number} options.scaleY\n * @param {boolean} [openPath] whether the shape is open or not, affects the calculations of the first and last points\n * @returns {Point[]} array of size 2n/4n of all suspected points\n */\n\ntype projectStrokeOnPointsOptions = {\n strokeWidth: number;\n strokeLineJoin: StrokeLineJoin;\n strokeMiterLimit: number; // https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit\n strokeUniform: boolean;\n scaleX: number;\n scaleY: number;\n};\n\nexport const projectStrokeOnPoints = (\n points: Point[],\n {\n strokeWidth,\n strokeLineJoin,\n strokeMiterLimit, // https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit\n strokeUniform,\n scaleX,\n scaleY,\n }: projectStrokeOnPointsOptions,\n openPath: boolean\n): Point[] => {\n const coords: Point[] = [],\n s = strokeWidth / 2,\n strokeUniformScalar = strokeUniform\n ? new Point(1 / scaleX, 1 / scaleY)\n : new Point(1, 1),\n getStrokeHatVector = (v: Point) => {\n const scalar = s / Math.hypot(v.x, v.y);\n return new Point(\n v.x * scalar * strokeUniformScalar.x,\n v.y * scalar * strokeUniformScalar.y\n );\n };\n if (points.length <= 1) {\n return coords;\n }\n points.forEach(function (p, index) {\n const A = new Point(p.x, p.y);\n let B, C;\n if (index === 0) {\n C = points[index + 1];\n B = openPath\n ? getStrokeHatVector(createVector(C, A)).add(A)\n : points[points.length - 1];\n } else if (index === points.length - 1) {\n B = points[index - 1];\n C = openPath ? getStrokeHatVector(createVector(B, A)).add(A) : points[0];\n } else {\n B = points[index - 1];\n C = points[index + 1];\n }\n const bisector = getBisector(A, B, C),\n bisectorVector = bisector.vector,\n alpha = bisector.angle;\n let scalar, miterVector;\n if (strokeLineJoin === StrokeLineJoin.miter) {\n scalar = -s / Math.sin(alpha / 2);\n miterVector = new Point(\n bisectorVector.x * scalar * strokeUniformScalar.x,\n bisectorVector.y * scalar * strokeUniformScalar.y\n );\n if (Math.hypot(miterVector.x, miterVector.y) / s <= strokeMiterLimit) {\n coords.push(A.add(miterVector));\n coords.push(A.subtract(miterVector));\n return;\n }\n }\n scalar = -s * Math.SQRT2;\n miterVector = new Point(\n bisectorVector.x * scalar * strokeUniformScalar.x,\n bisectorVector.y * scalar * strokeUniformScalar.y\n );\n coords.push(A.add(miterVector));\n coords.push(A.subtract(miterVector));\n });\n return coords;\n};\n","/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (_) try {\r\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [op[0] & 2, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n","import { cos } from './cos';\nimport { sin } from './sin';\nimport { degreesToRadians } from './radiansDegreesConversion';\nimport { iMatrix, PiBy180 } from '../../constants';\nimport { IPoint, Point } from '../../point.class';\nimport { TDegree, TMat2D } from '../../typedefs';\n\ntype TRotateMatrixArgs = {\n angle?: TDegree;\n};\n\ntype TTranslateMatrixArgs = {\n translateX?: number;\n translateY?: number;\n};\n\nexport type TScaleMatrixArgs = {\n scaleX?: number;\n scaleY?: number;\n flipX?: boolean;\n flipY?: boolean;\n skewX?: TDegree;\n skewY?: TDegree;\n};\n\nexport type TComposeMatrixArgs = TTranslateMatrixArgs &\n TRotateMatrixArgs &\n TScaleMatrixArgs;\n/**\n * Apply transform t to point p\n * @static\n * @memberOf fabric.util\n * @param {Point | IPoint} p The point to transform\n * @param {Array} t The transform\n * @param {Boolean} [ignoreOffset] Indicates that the offset should not be applied\n * @return {Point} The transformed point\n */\nexport const transformPoint = (\n p: Point | IPoint,\n t: TMat2D,\n ignoreOffset?: boolean\n): Point => new Point(p).transform(t, ignoreOffset);\n\n/**\n * Invert transformation t\n * @static\n * @memberOf fabric.util\n * @param {Array} t The transform\n * @return {Array} The inverted transform\n */\nexport const invertTransform = (t: TMat2D): TMat2D => {\n const a = 1 / (t[0] * t[3] - t[1] * t[2]),\n r = [a * t[3], -a * t[1], -a * t[2], a * t[0], 0, 0] as TMat2D,\n { x, y } = transformPoint(new Point(t[4], t[5]), r, true);\n r[4] = -x;\n r[5] = -y;\n return r;\n};\n\n/**\n * Multiply matrix A by matrix B to nest transformations\n * @static\n * @memberOf fabric.util\n * @param {TMat2D} a First transformMatrix\n * @param {TMat2D} b Second transformMatrix\n * @param {Boolean} is2x2 flag to multiply matrices as 2x2 matrices\n * @return {TMat2D} The product of the two transform matrices\n */\nexport const multiplyTransformMatrices = (\n a: TMat2D,\n b: TMat2D,\n is2x2?: boolean\n): TMat2D =>\n [\n a[0] * b[0] + a[2] * b[1],\n a[1] * b[0] + a[3] * b[1],\n a[0] * b[2] + a[2] * b[3],\n a[1] * b[2] + a[3] * b[3],\n is2x2 ? 0 : a[0] * b[4] + a[2] * b[5] + a[4],\n is2x2 ? 0 : a[1] * b[4] + a[3] * b[5] + a[5],\n ] as TMat2D;\n\n/**\n * Decomposes standard 2x3 matrix into transform components\n * @static\n * @memberOf fabric.util\n * @param {TMat2D} a transformMatrix\n * @return {Object} Components of transform\n */\nexport const qrDecompose = (\n a: TMat2D\n): Required> => {\n const angle = Math.atan2(a[1], a[0]),\n denom = Math.pow(a[0], 2) + Math.pow(a[1], 2),\n scaleX = Math.sqrt(denom),\n scaleY = (a[0] * a[3] - a[2] * a[1]) / scaleX,\n skewX = Math.atan2(a[0] * a[2] + a[1] * a[3], denom);\n return {\n angle: (angle / PiBy180) as TDegree,\n scaleX,\n scaleY,\n skewX: (skewX / PiBy180) as TDegree,\n skewY: 0 as TDegree,\n translateX: a[4],\n translateY: a[5],\n };\n};\n\n/**\n * Returns a transform matrix starting from an object of the same kind of\n * the one returned from qrDecompose, useful also if you want to calculate some\n * transformations from an object that is not enlived yet\n * @static\n * @memberOf fabric.util\n * @param {Object} options\n * @param {Number} [options.angle] angle in degrees\n * @return {TMat2D} transform matrix\n */\n\nexport const calcRotateMatrix = ({ angle }: TRotateMatrixArgs): TMat2D => {\n if (!angle) {\n return iMatrix;\n }\n const theta = degreesToRadians(angle),\n cosin = cos(theta),\n sinus = sin(theta);\n return [cosin, sinus, -sinus, cosin, 0, 0];\n};\n\n/**\n * Returns a transform matrix starting from an object of the same kind of\n * the one returned from qrDecompose, useful also if you want to calculate some\n * transformations from an object that is not enlived yet.\n * is called DimensionsTransformMatrix because those properties are the one that influence\n * the size of the resulting box of the object.\n * @static\n * @memberOf fabric.util\n * @param {Object} options\n * @param {Number} [options.scaleX]\n * @param {Number} [options.scaleY]\n * @param {Boolean} [options.flipX]\n * @param {Boolean} [options.flipY]\n * @param {Number} [options.skewX]\n * @param {Number} [options.skewY]\n * @return {Number[]} transform matrix\n */\nexport const calcDimensionsMatrix = ({\n scaleX = 1,\n scaleY = 1,\n flipX = false,\n flipY = false,\n skewX = 0 as TDegree,\n skewY = 0 as TDegree,\n}: TScaleMatrixArgs) => {\n let scaleMatrix = iMatrix;\n if (scaleX !== 1 || scaleY !== 1 || flipX || flipY) {\n scaleMatrix = [\n flipX ? -scaleX : scaleX,\n 0,\n 0,\n flipY ? -scaleY : scaleY,\n 0,\n 0,\n ] as TMat2D;\n }\n if (skewX) {\n scaleMatrix = multiplyTransformMatrices(\n scaleMatrix,\n [1, 0, Math.tan(degreesToRadians(skewX)), 1] as unknown as TMat2D,\n true\n );\n }\n if (skewY) {\n scaleMatrix = multiplyTransformMatrices(\n scaleMatrix,\n [1, Math.tan(degreesToRadians(skewY)), 0, 1] as unknown as TMat2D,\n true\n );\n }\n return scaleMatrix;\n};\n\n/**\n * Returns a transform matrix starting from an object of the same kind of\n * the one returned from qrDecompose, useful also if you want to calculate some\n * transformations from an object that is not enlived yet\n * @static\n * @memberOf fabric.util\n * @param {Object} options\n * @param {Number} [options.angle]\n * @param {Number} [options.scaleX]\n * @param {Number} [options.scaleY]\n * @param {Boolean} [options.flipX]\n * @param {Boolean} [options.flipY]\n * @param {Number} [options.skewX]\n * @param {Number} [options.skewY]\n * @param {Number} [options.translateX]\n * @param {Number} [options.translateY]\n * @return {Number[]} transform matrix\n */\n\nexport const composeMatrix = ({\n translateX = 0,\n translateY = 0,\n angle = 0 as TDegree,\n ...otherOptions\n}: TComposeMatrixArgs): TMat2D => {\n let matrix = [1, 0, 0, 1, translateX, translateY] as TMat2D;\n if (angle) {\n matrix = multiplyTransformMatrices(matrix, calcRotateMatrix({ angle }));\n }\n const scaleMatrix = calcDimensionsMatrix(otherOptions);\n if (scaleMatrix !== iMatrix) {\n matrix = multiplyTransformMatrices(matrix, scaleMatrix);\n }\n return matrix;\n};\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\n\n/**\n * Copies all enumerable properties of one js object to another\n * this does not and cannot compete with generic utils.\n * Does not clone or extend fabric.Object subclasses.\n * This is mostly for internal use and has extra handling for fabricJS objects\n * it skips the canvas and group properties in deep cloning.\n * @memberOf fabric.util.object\n * @param {Object} destination Where to copy to\n * @param {Object} source Where to copy from\n * @param {Boolean} [deep] Whether to extend nested objects\n * @return {Object}\n */\n\nexport const extend = (destination, source, deep) => {\n // the deep clone is for internal use, is not meant to avoid\n // javascript traps or cloning html element or self referenced objects.\n if (deep) {\n if (!fabric.isLikelyNode && source instanceof Element) {\n // avoid cloning deep images, canvases,\n destination = source;\n } else if (Array.isArray(source)) {\n destination = [];\n for (let i = 0, len = source.length; i < len; i++) {\n destination[i] = extend({}, source[i], deep);\n }\n } else if (source && typeof source === 'object') {\n for (const property in source) {\n if (property === 'canvas' || property === 'group') {\n // we do not want to clone this props at all.\n // we want to keep the keys in the copy\n destination[property] = null;\n } else if (Object.prototype.hasOwnProperty.call(source, property)) {\n destination[property] = extend({}, source[property], deep);\n }\n }\n } else {\n // this sounds odd for an extend but is ok for recursive use\n destination = source;\n }\n } else {\n for (const property in source) {\n destination[property] = source[property];\n }\n }\n return destination;\n};\n\n/**\n * Creates an empty object and copies all enumerable properties of another object to it\n * This method is mostly for internal use, and not intended for duplicating shapes in canvas.\n * @memberOf fabric.util.object\n * @param {Object} object Object to clone\n * @param {Boolean} [deep] Whether to clone nested objects\n * @return {Object}\n */\n\n//TODO: this function return an empty object if you try to clone null\nexport const clone = (object: any, deep: boolean) =>\n deep ? extend({}, object, deep) : { ...object };\n","import { clone } from '../lang_object';\n\n/**\n * @memberOf fabric.util\n * @param {Object} prevStyle first style to compare\n * @param {Object} thisStyle second style to compare\n * @param {boolean} forTextSpans whether to check overline, underline, and line-through properties\n * @return {boolean} true if the style changed\n */\nexport const hasStyleChanged = (\n prevStyle: any,\n thisStyle: any,\n forTextSpans = false\n) =>\n prevStyle.fill !== thisStyle.fill ||\n prevStyle.stroke !== thisStyle.stroke ||\n prevStyle.strokeWidth !== thisStyle.strokeWidth ||\n prevStyle.fontSize !== thisStyle.fontSize ||\n prevStyle.fontFamily !== thisStyle.fontFamily ||\n prevStyle.fontWeight !== thisStyle.fontWeight ||\n prevStyle.fontStyle !== thisStyle.fontStyle ||\n prevStyle.textBackgroundColor !== thisStyle.textBackgroundColor ||\n prevStyle.deltaY !== thisStyle.deltaY ||\n (forTextSpans &&\n (prevStyle.overline !== thisStyle.overline ||\n prevStyle.underline !== thisStyle.underline ||\n prevStyle.linethrough !== thisStyle.linethrough));\n\n/**\n * Returns the array form of a text object's inline styles property with styles grouped in ranges\n * rather than per character. This format is less verbose, and is better suited for storage\n * so it is used in serialization (not during runtime).\n * @memberOf fabric.util\n * @param {object} styles per character styles for a text object\n * @param {String} text the text string that the styles are applied to\n * @return {{start: number, end: number, style: object}[]}\n */\nexport const stylesToArray = (styles: any, text: string) => {\n const textLines = text.split('\\n'),\n stylesArray = [];\n let charIndex = -1,\n prevStyle = {};\n // clone style structure to prevent mutation\n styles = clone(styles, true);\n\n //loop through each textLine\n for (let i = 0; i < textLines.length; i++) {\n if (!styles[i]) {\n //no styles exist for this line, so add the line's length to the charIndex total\n charIndex += textLines[i].length;\n continue;\n }\n //loop through each character of the current line\n for (let c = 0; c < textLines[i].length; c++) {\n charIndex++;\n const thisStyle = styles[i][c];\n //check if style exists for this character\n if (thisStyle && Object.keys(thisStyle).length > 0) {\n if (hasStyleChanged(prevStyle, thisStyle, true)) {\n stylesArray.push({\n start: charIndex,\n end: charIndex + 1,\n style: thisStyle,\n });\n } else {\n //if style is the same as previous character, increase end index\n stylesArray[stylesArray.length - 1].end++;\n }\n }\n prevStyle = thisStyle || {};\n }\n }\n return stylesArray;\n};\n\n/**\n * Returns the object form of the styles property with styles that are assigned per\n * character rather than grouped by range. This format is more verbose, and is\n * only used during runtime (not for serialization/storage)\n * @memberOf fabric.util\n * @param {Array} styles the serialized form of a text object's styles\n * @param {String} text the text string that the styles are applied to\n * @return {Object}\n */\nexport const stylesFromArray = (styles: any, text: string) => {\n if (!Array.isArray(styles)) {\n return styles;\n }\n const textLines = text.split('\\n'),\n stylesObject = {} as any;\n let charIndex = -1,\n styleIndex = 0;\n //loop through each textLine\n for (let i = 0; i < textLines.length; i++) {\n //loop through each character of the current line\n for (let c = 0; c < textLines[i].length; c++) {\n charIndex++;\n //check if there's a style collection that includes the current character\n if (\n styles[styleIndex] &&\n styles[styleIndex].start <= charIndex &&\n charIndex < styles[styleIndex].end\n ) {\n //create object for line index if it doesn't exist\n stylesObject[i] = stylesObject[i] || {};\n //assign a style at this character's index\n stylesObject[i][c] = { ...styles[styleIndex].style };\n //if character is at the end of the current style collection, move to the next\n if (charIndex === styles[styleIndex].end - 1) {\n styleIndex++;\n }\n }\n }\n }\n return stylesObject;\n};\n","import { fabric } from '../../../HEADER';\nimport { ImageFormat } from '../../typedefs';\n/**\n * Creates canvas element\n * @static\n * @memberOf fabric.util\n * @return {CanvasElement} initialized canvas element\n */\nexport const createCanvasElement = (): HTMLCanvasElement =>\n fabric.document.createElement('canvas');\n\n/**\n * Creates image element (works on client and node)\n * @static\n * @memberOf fabric.util\n * @return {HTMLImageElement} HTML image element\n */\nexport const createImage = (): HTMLImageElement =>\n fabric.document.createElement('img');\n\n/**\n * Creates a canvas element that is a copy of another and is also painted\n * @param {CanvasElement} canvas to copy size and content of\n * @static\n * @memberOf fabric.util\n * @return {CanvasElement} initialized canvas element\n */\nexport const copyCanvasElement = (\n canvas: HTMLCanvasElement\n): HTMLCanvasElement => {\n const newCanvas = createCanvasElement();\n newCanvas.width = canvas.width;\n newCanvas.height = canvas.height;\n newCanvas.getContext('2d')?.drawImage(canvas, 0, 0);\n return newCanvas;\n};\n\n/**\n * since 2.6.0 moved from canvas instance to utility.\n * possibly useless\n * @param {CanvasElement} canvasEl to copy size and content of\n * @param {String} format 'jpeg' or 'png', in some browsers 'webp' is ok too\n * @param {Number} quality <= 1 and > 0\n * @static\n * @memberOf fabric.util\n * @return {String} data url\n */\nexport const toDataURL = (\n canvasEl: HTMLCanvasElement,\n format: ImageFormat,\n quality: number\n) => canvasEl.toDataURL(`image/${format}`, quality);\n","/**\n * A wrapper around Number#toFixed, which contrary to native method returns number, not string.\n * @static\n * @memberOf fabric.util\n * @param {number|string} number number to operate on\n * @param {number} fractionDigits number of fraction digits to \"leave\"\n * @return {number}\n */\nexport const toFixed = (number: number | string, fractionDigits: number) =>\n parseFloat(Number(number).toFixed(fractionDigits));\n","import { fabric } from '../../../HEADER';\nimport { SVGElementName, SupportedSVGUnit, TMat2D } from '../../typedefs';\nimport { DEFAULT_SVG_FONT_SIZE } from '../../constants';\nimport { toFixed } from './toFixed';\nimport { config } from '../../config';\n/**\n * Returns array of attributes for given svg that fabric parses\n * @memberOf fabric.util\n * @param {SVGElementName} type Type of svg element (eg. 'circle')\n * @return {Array} string names of supported attributes\n */\nexport const getSvgAttributes = (type: SVGElementName) => {\n const commonAttributes = ['instantiated_by_use', 'style', 'id', 'class'];\n switch (type) {\n case SVGElementName.linearGradient:\n return commonAttributes.concat([\n 'x1',\n 'y1',\n 'x2',\n 'y2',\n 'gradientUnits',\n 'gradientTransform',\n ]);\n case 'radialGradient':\n return commonAttributes.concat([\n 'gradientUnits',\n 'gradientTransform',\n 'cx',\n 'cy',\n 'r',\n 'fx',\n 'fy',\n 'fr',\n ]);\n case 'stop':\n return commonAttributes.concat(['offset', 'stop-color', 'stop-opacity']);\n }\n return commonAttributes;\n};\n\n/**\n * Converts from attribute value to pixel value if applicable.\n * Returns converted pixels or original value not converted.\n * @param {string} value number to operate on\n * @param {number} fontSize\n * @return {number}\n */\nexport const parseUnit = (value: string, fontSize: number) => {\n const unit = /\\D{0,2}$/.exec(value),\n number = parseFloat(value);\n if (!fontSize) {\n fontSize = DEFAULT_SVG_FONT_SIZE;\n }\n const dpi = config.DPI;\n switch (unit?.[0]) {\n case SupportedSVGUnit.mm:\n return (number * dpi) / 25.4;\n\n case SupportedSVGUnit.cm:\n return (number * dpi) / 2.54;\n\n case SupportedSVGUnit.in:\n return number * dpi;\n\n case SupportedSVGUnit.pt:\n return (number * dpi) / 72; // or * 4 / 3\n\n case SupportedSVGUnit.pc:\n return ((number * dpi) / 72) * 12; // or * 16\n\n case SupportedSVGUnit.em:\n return number * fontSize;\n\n default:\n return number;\n }\n};\n\n/**\n * Groups SVG elements (usually those retrieved from SVG document)\n * @static\n * @memberOf fabric.util\n * @param {Array} elements fabric.Object(s) parsed from svg, to group\n * @return {fabric.Object|fabric.Group}\n */\nexport const groupSVGElements = (elements: any[]) => {\n if (elements && elements.length === 1) {\n return elements[0];\n }\n return new fabric.Group(elements);\n};\n\nconst enum MeetOrSlice {\n meet = 'meet',\n slice = 'slice',\n}\n\nconst enum MinMidMax {\n min = 'Min',\n mid = 'Mid',\n max = 'Max',\n none = 'none',\n}\n\ntype TPreserveArParsed = {\n meetOrSlice: MeetOrSlice;\n alignX: MinMidMax;\n alignY: MinMidMax;\n};\n\n// align can be either none or undefined or a combination of mid/max\nconst parseAlign = (align: string): MinMidMax[] => {\n //divide align in alignX and alignY\n if (align && align !== MinMidMax.none) {\n return [align.slice(1, 4) as MinMidMax, align.slice(5, 8) as MinMidMax];\n } else if (align === MinMidMax.none) {\n return [align, align];\n }\n return [MinMidMax.mid, MinMidMax.mid];\n};\n\n/**\n * Parse preserveAspectRatio attribute from element\n * https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/preserveAspectRatio\n * @param {string} attribute to be parsed\n * @return {Object} an object containing align and meetOrSlice attribute\n */\nexport const parsePreserveAspectRatioAttribute = (\n attribute: string\n): TPreserveArParsed => {\n const [firstPart, secondPart] = attribute.trim().split(' ') as [\n MinMidMax,\n MeetOrSlice | undefined\n ];\n const [alignX, alignY] = parseAlign(firstPart);\n return {\n meetOrSlice: secondPart || MeetOrSlice.meet,\n alignX,\n alignY,\n };\n};\n\n/**\n * given an array of 6 number returns something like `\"matrix(...numbers)\"`\n * @memberOf fabric.util\n * @param {TMat2D} transform an array with 6 numbers\n * @return {String} transform matrix for svg\n */\nexport const matrixToSVG = (transform: TMat2D) =>\n 'matrix(' +\n transform\n .map((value) => toFixed(value, config.NUM_FRACTION_DIGITS))\n .join(' ') +\n ')';\n","interface IWithDimensions {\n width: number;\n height: number;\n}\n\n/**\n * Finds the scale for the object source to fit inside the object destination,\n * keeping aspect ratio intact.\n * respect the total allowed area for the cache.\n * @memberOf fabric.util\n * @param {Object | fabric.Object} source\n * @param {Number} source.height natural unscaled height of the object\n * @param {Number} source.width natural unscaled width of the object\n * @param {Object | fabric.Object} destination\n * @param {Number} destination.height natural unscaled height of the object\n * @param {Number} destination.width natural unscaled width of the object\n * @return {Number} scale factor to apply to source to fit into destination\n */\nexport const findScaleToFit = (\n source: IWithDimensions,\n destination: IWithDimensions\n) =>\n Math.min(\n destination.width / source.width,\n destination.height / source.height\n );\n\n/**\n * Finds the scale for the object source to cover entirely the object destination,\n * keeping aspect ratio intact.\n * respect the total allowed area for the cache.\n * @memberOf fabric.util\n * @param {Object | fabric.Object} source\n * @param {Number} source.height natural unscaled height of the object\n * @param {Number} source.width natural unscaled width of the object\n * @param {Object | fabric.Object} destination\n * @param {Number} destination.height natural unscaled height of the object\n * @param {Number} destination.width natural unscaled width of the object\n * @return {Number} scale factor to apply to source to cover destination\n */\nexport const findScaleToCover = (\n source: IWithDimensions,\n destination: IWithDimensions\n) =>\n Math.max(\n destination.width / source.width,\n destination.height / source.height\n );\n","export const capValue = (min: number, value: number, max: number) =>\n Math.max(min, Math.min(value, max));\n","import { Point } from '../../point.class';\n\n/**\n * Calculates bounding box (left, top, width, height) from given `points`\n * @static\n * @memberOf fabric.util\n * @param {Point[]} points\n * @return {Object} Object with left, top, width, height properties\n */\nexport const makeBoundingBoxFromPoints = (points: Point[]) => {\n const { min, max } = points.reduce(\n ({ min, max }, curr) => {\n return {\n min: min.min(curr),\n max: max.max(curr),\n };\n },\n { min: points[0], max: points[0] }\n );\n\n const size = max.subtract(min);\n\n return {\n left: min.x,\n top: min.y,\n width: size.x,\n height: size.y,\n };\n};\n","import { Point } from '../../point.class';\nimport { TMat2D } from '../../typedefs';\nimport { makeBoundingBoxFromPoints } from './boundingBoxFromPoints';\nimport {\n invertTransform,\n multiplyTransformMatrices,\n qrDecompose,\n calcDimensionsMatrix,\n} from './matrix';\nimport type { TComposeMatrixArgs, TScaleMatrixArgs } from './matrix';\n\ntype FabricObject = any;\n\n/**\n * given an object and a transform, apply the inverse transform to the object,\n * this is equivalent to remove from that object that transformation, so that\n * added in a space with the removed transform, the object will be the same as before.\n * Removing from an object a transform that scale by 2 is like scaling it by 1/2.\n * Removing from an object a transform that rotate by 30deg is like rotating by 30deg\n * in the opposite direction.\n * This util is used to add objects inside transformed groups or nested groups.\n * @memberOf fabric.util\n * @param {fabric.Object} object the object you want to transform\n * @param {Array} transform the destination transform\n */\nexport const removeTransformFromObject = (\n object: FabricObject,\n transform: TMat2D\n) => {\n const inverted = invertTransform(transform),\n finalTransform = multiplyTransformMatrices(\n inverted,\n object.calcOwnMatrix()\n );\n applyTransformToObject(object, finalTransform);\n};\n\n/**\n * given an object and a transform, apply the transform to the object.\n * this is equivalent to change the space where the object is drawn.\n * Adding to an object a transform that scale by 2 is like scaling it by 2.\n * This is used when removing an object from an active selection for example.\n * @memberOf fabric.util\n * @param {fabric.Object} object the object you want to transform\n * @param {Array} transform the destination transform\n */\nexport const addTransformToObject = (object: FabricObject, transform: TMat2D) =>\n applyTransformToObject(\n object,\n multiplyTransformMatrices(transform, object.calcOwnMatrix())\n );\n\n/**\n * discard an object transform state and apply the one from the matrix.\n * @memberOf fabric.util\n * @param {fabric.Object} object the object you want to transform\n * @param {Array} transform the destination transform\n */\nexport const applyTransformToObject = (\n object: FabricObject,\n transform: TMat2D\n) => {\n const { translateX, translateY, scaleX, scaleY, ...otherOptions } =\n qrDecompose(transform),\n center = new Point(translateX, translateY);\n object.flipX = false;\n object.flipY = false;\n Object.assign(object, otherOptions);\n object.set({ scaleX, scaleY });\n object.setPositionByOrigin(center, 'center', 'center');\n};\n/**\n * reset an object transform state to neutral. Top and left are not accounted for\n * @static\n * @memberOf fabric.util\n * @param {fabric.Object} target object to transform\n */\nexport const resetObjectTransform = (target: FabricObject) => {\n target.scaleX = 1;\n target.scaleY = 1;\n target.skewX = 0;\n target.skewY = 0;\n target.flipX = false;\n target.flipY = false;\n target.rotate(0);\n};\n\n/**\n * Extract Object transform values\n * @static\n * @memberOf fabric.util\n * @param {fabric.Object} target object to read from\n * @return {Object} Components of transform\n */\nexport const saveObjectTransform = (\n target: FabricObject\n): TComposeMatrixArgs & { left: number; top: number } => ({\n scaleX: target.scaleX,\n scaleY: target.scaleY,\n skewX: target.skewX,\n skewY: target.skewY,\n angle: target.angle,\n left: target.left,\n flipX: target.flipX,\n flipY: target.flipY,\n top: target.top,\n});\n\n/**\n * given a width and height, return the size of the bounding box\n * that can contains the box with width/height with applied transform\n * described in options.\n * Use to calculate the boxes around objects for controls.\n * @memberOf fabric.util\n * @param {Number} width\n * @param {Number} height\n * @param {Object} options\n * @param {Number} options.scaleX\n * @param {Number} options.scaleY\n * @param {Number} options.skewX\n * @param {Number} options.skewY\n * @returns {Point} size\n */\nexport const sizeAfterTransform = (\n width: number,\n height: number,\n options: TScaleMatrixArgs\n) => {\n const dimX = width / 2,\n dimY = height / 2,\n transformMatrix = calcDimensionsMatrix(options),\n points = [\n new Point(-dimX, -dimY),\n new Point(dimX, -dimY),\n new Point(-dimX, dimY),\n new Point(dimX, dimY),\n ].map((p) => p.transform(transformMatrix)),\n bbox = makeBoundingBoxFromPoints(points);\n return new Point(bbox.width, bbox.height);\n};\n","import { iMatrix } from '../../constants';\nimport type { Point } from '../../point.class';\nimport type { TMat2D } from '../../typedefs';\nimport { TObject } from '../../__types__';\nimport { invertTransform, multiplyTransformMatrices } from './matrix';\nimport { applyTransformToObject } from './objectTransforms';\n\nexport const enum ObjectRelation {\n sibling = 'sibling',\n child = 'child',\n}\n\n/**\n * We are actually looking for the transformation from the destination plane to the source plane (change of basis matrix)\\\n * The object will exist on the destination plane and we want it to seem unchanged by it so we invert the destination matrix (`to`) and then apply the source matrix (`from`)\n * @param [from]\n * @param [to]\n * @returns\n */\nexport const calcPlaneChangeMatrix = (\n from: TMat2D = iMatrix,\n to: TMat2D = iMatrix\n) => multiplyTransformMatrices(invertTransform(to), from);\n\n/**\n * Sends a point from the source coordinate plane to the destination coordinate plane.\\\n * From the canvas/viewer's perspective the point remains unchanged.\n *\n * @example Send point from canvas plane to group plane\n * var obj = new fabric.Rect({ left: 20, top: 20, width: 60, height: 60, strokeWidth: 0 });\n * var group = new fabric.Group([obj], { strokeWidth: 0 });\n * var sentPoint1 = fabric.util.sendPointToPlane(new Point(50, 50), undefined, group.calcTransformMatrix());\n * var sentPoint2 = fabric.util.sendPointToPlane(new Point(50, 50), fabric.iMatrix, group.calcTransformMatrix());\n * console.log(sentPoint1, sentPoint2) // both points print (0,0) which is the center of group\n *\n * @static\n * @memberOf fabric.util\n * @see {fabric.util.transformPointRelativeToCanvas} for transforming relative to canvas\n * @param {Point} point\n * @param {TMat2D} [from] plane matrix containing object. Passing `undefined` is equivalent to passing the identity matrix, which means `point` exists in the canvas coordinate plane.\n * @param {TMat2D} [to] destination plane matrix to contain object. Passing `undefined` means `point` should be sent to the canvas coordinate plane.\n * @returns {Point} transformed point\n */\nexport const sendPointToPlane = (\n point: Point,\n from: TMat2D = iMatrix,\n to: TMat2D = iMatrix\n): Point =>\n // we are actually looking for the transformation from the destination plane to the source plane (which is a linear mapping)\n // the object will exist on the destination plane and we want it to seem unchanged by it so we reverse the destination matrix (to) and then apply the source matrix (from)\n point.transform(calcPlaneChangeMatrix(from, to));\n\n/**\n * Transform point relative to canvas.\n * From the viewport/viewer's perspective the point remains unchanged.\n *\n * `child` relation means `point` exists in the coordinate plane created by `canvas`.\n * In other words point is measured acoording to canvas' top left corner\n * meaning that if `point` is equal to (0,0) it is positioned at canvas' top left corner.\n *\n * `sibling` relation means `point` exists in the same coordinate plane as canvas.\n * In other words they both relate to the same (0,0) and agree on every point, which is how an event relates to canvas.\n *\n * @static\n * @memberOf fabric.util\n * @param {Point} point\n * @param {fabric.StaticCanvas} canvas\n * @param {'sibling'|'child'} relationBefore current relation of point to canvas\n * @param {'sibling'|'child'} relationAfter desired relation of point to canvas\n * @returns {Point} transformed point\n */\nexport const transformPointRelativeToCanvas = (\n point: Point,\n canvas: any,\n relationBefore: ObjectRelation,\n relationAfter: ObjectRelation\n): Point => {\n // is this still needed with TS?\n if (\n relationBefore !== ObjectRelation.child &&\n relationBefore !== ObjectRelation.sibling\n ) {\n throw new Error('fabric.js: received bad argument ' + relationBefore);\n }\n if (\n relationAfter !== ObjectRelation.child &&\n relationAfter !== ObjectRelation.sibling\n ) {\n throw new Error('fabric.js: received bad argument ' + relationAfter);\n }\n if (relationBefore === relationAfter) {\n return point;\n }\n const t = canvas.viewportTransform;\n return point.transform(relationAfter === 'child' ? invertTransform(t) : t);\n};\n\n/**\n *\n * A util that abstracts applying transform to objects.\\\n * Sends `object` to the destination coordinate plane by applying the relevant transformations.\\\n * Changes the space/plane where `object` is drawn.\\\n * From the canvas/viewer's perspective `object` remains unchanged.\n *\n * @example Move clip path from one object to another while preserving it's appearance as viewed by canvas/viewer\n * let obj, obj2;\n * let clipPath = new fabric.Circle({ radius: 50 });\n * obj.clipPath = clipPath;\n * // render\n * fabric.util.sendObjectToPlane(clipPath, obj.calcTransformMatrix(), obj2.calcTransformMatrix());\n * obj.clipPath = undefined;\n * obj2.clipPath = clipPath;\n * // render, clipPath now clips obj2 but seems unchanged from the eyes of the viewer\n *\n * @example Clip an object's clip path with an existing object\n * let obj, existingObj;\n * let clipPath = new fabric.Circle({ radius: 50 });\n * obj.clipPath = clipPath;\n * let transformTo = fabric.util.multiplyTransformMatrices(obj.calcTransformMatrix(), clipPath.calcTransformMatrix());\n * fabric.util.sendObjectToPlane(existingObj, existingObj.group?.calcTransformMatrix(), transformTo);\n * clipPath.clipPath = existingObj;\n *\n * @static\n * @memberof fabric.util\n * @param {fabric.Object} object\n * @param {Matrix} [from] plane matrix containing object. Passing `undefined` is equivalent to passing the identity matrix, which means `object` is a direct child of canvas.\n * @param {Matrix} [to] destination plane matrix to contain object. Passing `undefined` means `object` should be sent to the canvas coordinate plane.\n * @returns {Matrix} the transform matrix that was applied to `object`\n */\nexport const sendObjectToPlane = (\n object: TObject,\n from?: TMat2D,\n to?: TMat2D\n): TMat2D => {\n const t = calcPlaneChangeMatrix(from, to);\n applyTransformToObject(\n object,\n multiplyTransformMatrices(t, object.calcOwnMatrix())\n );\n return t;\n};\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\n\n/**\n * Camelizes a string\n * @memberOf fabric.util.string\n * @param {String} string String to camelize\n * @return {String} Camelized version of a string\n */\nexport const camelize = (string: string): string =>\n string.replace(/-+(.)?/g, function (match, character) {\n return character ? character.toUpperCase() : '';\n });\n\n/**\n * Capitalizes a string\n * @memberOf fabric.util.string\n * @param {String} string String to capitalize\n * @param {Boolean} [firstLetterOnly] If true only first letter is capitalized\n * and other letters stay untouched, if false first letter is capitalized\n * and other letters are converted to lowercase.\n * @return {String} Capitalized version of a string\n */\nexport const capitalize = (string: string, firstLetterOnly = false): string =>\n `${string.charAt(0).toUpperCase()}${\n firstLetterOnly ? string.slice(1) : string.slice(1).toLowerCase()\n }`;\n\n/**\n * Escapes XML in a string\n * @memberOf fabric.util.string\n * @param {String} string String to escape\n * @return {String} Escaped version of a string\n */\nexport const escapeXml = (string: string): string =>\n string\n .replace(/&/g, '&')\n .replace(/\"/g, '"')\n .replace(/'/g, ''')\n .replace(//g, '>');\n\n/**\n * Divide a string in the user perceived single units\n * @memberOf fabric.util.string\n * @param {String} textstring String to escape\n * @return {Array} array containing the graphemes\n */\nexport const graphemeSplit = (textstring: string): string[] => {\n const graphemes = [];\n for (let i = 0, chr; i < textstring.length; i++) {\n if ((chr = getWholeChar(textstring, i)) === false) {\n continue;\n }\n graphemes.push(chr);\n }\n return graphemes;\n};\n\n// taken from mdn in the charAt doc page.\nconst getWholeChar = (str: string, i: number): string => {\n const code = str.charCodeAt(i);\n if (isNaN(code)) {\n return ''; // Position not found\n }\n if (code < 0xd800 || code > 0xdfff) {\n return str.charAt(i);\n }\n\n // High surrogate (could change last hex to 0xDB7F to treat high private\n // surrogates as single characters)\n if (0xd800 <= code && code <= 0xdbff) {\n if (str.length <= i + 1) {\n throw 'High surrogate without following low surrogate';\n }\n const next = str.charCodeAt(i + 1);\n if (0xdc00 > next || next > 0xdfff) {\n throw 'High surrogate without following low surrogate';\n }\n return str.charAt(i) + str.charAt(i + 1);\n }\n // Low surrogate (0xDC00 <= code && code <= 0xDFFF)\n if (i === 0) {\n throw 'Low surrogate without preceding high surrogate';\n }\n const prev = str.charCodeAt(i - 1);\n\n // (could change last hex to 0xDB7F to treat high private\n // surrogates as single characters)\n if (0xd800 > prev || prev > 0xdbff) {\n throw 'Low surrogate without preceding high surrogate';\n }\n // We can pass over low surrogates now as the second component\n // in a pair which we have already processed\n return false;\n};\n","import { fabric } from '../../../HEADER';\nimport { noop } from '../../constants';\nimport { TCrossOrigin } from '../../typedefs';\nimport { TObject } from '../../__types__';\nimport { camelize, capitalize } from '../lang_string';\nimport { createImage } from './dom';\n\n/**\n * Returns klass \"Class\" object of given namespace\n * @memberOf fabric.util\n * @param {String} type Type of object (eg. 'circle')\n * @param {object} namespace Namespace to get klass \"Class\" object from\n * @return {Object} klass \"Class\"\n */\nexport const getKlass = (type: string, namespace = fabric): any =>\n namespace[capitalize(camelize(type), true)];\n\ntype LoadImageOptions = {\n signal?: AbortSignal;\n crossOrigin?: TCrossOrigin;\n};\n\n/**\n * Loads image element from given url and resolve it, or catch.\n * @memberOf fabric.util\n * @param {String} url URL representing an image\n * @param {Object} [options] image loading options\n * @param {string} [options.crossOrigin] cors value for the image loading, default to anonymous\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @param {Promise} img the loaded image.\n */\nexport const loadImage = (\n url: string,\n { signal, crossOrigin = null }: LoadImageOptions = {}\n) =>\n new Promise(function (resolve, reject) {\n if (signal && signal.aborted) {\n return reject(new Error('`options.signal` is in `aborted` state'));\n }\n const img = createImage();\n let abort: EventListenerOrEventListenerObject;\n if (signal) {\n abort = function (err: Event) {\n img.src = '';\n reject(err);\n };\n signal.addEventListener('abort', abort, { once: true });\n }\n const done = function () {\n img.onload = img.onerror = null;\n abort && signal?.removeEventListener('abort', abort);\n resolve(img);\n };\n if (!url) {\n done();\n return;\n }\n img.onload = done;\n img.onerror = function () {\n abort && signal?.removeEventListener('abort', abort);\n reject(new Error('Error loading ' + img.src));\n };\n crossOrigin && (img.crossOrigin = crossOrigin);\n img.src = url;\n });\n\ntype EnlivenObjectOptions = {\n signal?: AbortSignal;\n reviver?: (arg: any, arg2: any) => void;\n namespace?: any;\n};\n\n/**\n * Creates corresponding fabric instances from their object representations\n * @static\n * @memberOf fabric.util\n * @param {Object[]} objects Objects to enliven\n * @param {object} [options]\n * @param {object} [options.namespace] Namespace to get klass \"Class\" object from\n * @param {(serializedObj: object, instance: fabric.Object) => any} [options.reviver] Method for further parsing of object elements,\n * called after each fabric object created.\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\nexport const enlivenObjects = (\n objects: any[],\n { signal, reviver = noop, namespace = fabric }: EnlivenObjectOptions = {}\n) =>\n new Promise((resolve, reject) => {\n const instances: TObject[] = [];\n signal && signal.addEventListener('abort', reject, { once: true });\n Promise.all(\n objects.map((obj) =>\n getKlass(obj.type, namespace)\n .fromObject(obj, {\n signal,\n reviver,\n namespace,\n })\n .then((fabricInstance: TObject) => {\n reviver(obj, fabricInstance);\n instances.push(fabricInstance);\n return fabricInstance;\n })\n )\n )\n .then(resolve)\n .catch((error) => {\n // cleanup\n instances.forEach(function (instance) {\n instance.dispose && instance.dispose();\n });\n reject(error);\n })\n .finally(() => {\n signal && signal.removeEventListener('abort', reject);\n });\n });\n\n/**\n * Creates corresponding fabric instances residing in an object, e.g. `clipPath`\n * @static\n * @memberOf fabric.util\n * @param {Object} object with properties to enlive ( fill, stroke, clipPath, path )\n * @param {object} [options]\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise<{[key:string]:fabric.Object|fabric.Pattern|fabric.Gradient|null}>} the input object with enlived values\n */\nexport const enlivenObjectEnlivables = (\n serializedObject: any,\n { signal }: { signal?: AbortSignal } = {}\n) =>\n new Promise((resolve, reject) => {\n const instances: any[] = [];\n signal && signal.addEventListener('abort', reject, { once: true });\n // enlive every possible property\n const promises = Object.values(serializedObject).map((value: any) => {\n if (!value) {\n return value;\n }\n // gradient\n if (value.colorStops) {\n return new fabric.Gradient(value);\n }\n // clipPath\n if (value.type) {\n return enlivenObjects([value], { signal }).then(([enlived]) => {\n instances.push(enlived);\n return enlived;\n });\n }\n // pattern\n if (value.source) {\n return fabric.Pattern.fromObject(value, { signal }).then(\n (pattern: any) => {\n instances.push(pattern);\n return pattern;\n }\n );\n }\n return value;\n });\n const keys = Object.keys(serializedObject);\n Promise.all(promises)\n .then((enlived) => {\n return enlived.reduce(function (acc, instance, index) {\n acc[keys[index]] = instance;\n return acc;\n }, {});\n })\n .then(resolve)\n .catch(function (error) {\n // cleanup\n instances.forEach((instance) => {\n instance.dispose && instance.dispose();\n });\n reject(error);\n })\n .finally(function () {\n signal && signal.removeEventListener('abort', reject);\n });\n });\n","/**\n * Populates an object with properties of another object\n * @param {Object} source Source object\n * @param {string[]} properties Properties names to include\n * @returns object populated with the picked keys\n */\nexport const pick = (source: T, keys: (keyof T)[] = []) => {\n return keys.reduce((o, key) => {\n if (key in source) {\n o[key] = source[key];\n }\n return o;\n }, {} as Partial);\n};\n","//@ts-nocheck\n\nexport function getSvgRegex(arr) {\n return new RegExp('^(' + arr.join('|') + ')\\\\b', 'i');\n}\n","//@ts-nocheck\nimport { getSvgRegex } from './getSvgRegex';\n\nexport const cssRules = {};\nexport const gradientDefs = {};\nexport const clipPaths = {};\n\nexport const reNum = '(?:[-+]?(?:\\\\d+|\\\\d*\\\\.\\\\d+)(?:[eE][-+]?\\\\d+)?)';\n\nexport const svgNS = 'http://www.w3.org/2000/svg';\n\nexport const commaWsp = '(?:\\\\s+,?\\\\s*|,\\\\s*)';\n\nexport const rePathCommand =\n /([-+]?((\\d+\\.\\d+)|((\\d+)|(\\.\\d+)))(?:[eE][-+]?\\d+)?)/gi;\n\nexport const reFontDeclaration = new RegExp(\n '(normal|italic)?\\\\s*(normal|small-caps)?\\\\s*' +\n '(normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900)?\\\\s*(' +\n reNum +\n '(?:px|cm|mm|em|pt|pc|in)*)(?:\\\\/(normal|' +\n reNum +\n '))?\\\\s+(.*)'\n);\n\nexport const svgValidTagNames = [\n 'path',\n 'circle',\n 'polygon',\n 'polyline',\n 'ellipse',\n 'rect',\n 'line',\n 'image',\n 'text',\n ],\n svgViewBoxElements = ['symbol', 'image', 'marker', 'pattern', 'view', 'svg'],\n svgInvalidAncestors = [\n 'pattern',\n 'defs',\n 'symbol',\n 'metadata',\n 'clipPath',\n 'mask',\n 'desc',\n ],\n svgValidParents = ['symbol', 'g', 'a', 'svg', 'clipPath', 'defs'],\n attributesMap = {\n cx: 'left',\n x: 'left',\n r: 'radius',\n cy: 'top',\n y: 'top',\n display: 'visible',\n visibility: 'visible',\n transform: 'transformMatrix',\n 'fill-opacity': 'fillOpacity',\n 'fill-rule': 'fillRule',\n 'font-family': 'fontFamily',\n 'font-size': 'fontSize',\n 'font-style': 'fontStyle',\n 'font-weight': 'fontWeight',\n 'letter-spacing': 'charSpacing',\n 'paint-order': 'paintFirst',\n 'stroke-dasharray': 'strokeDashArray',\n 'stroke-dashoffset': 'strokeDashOffset',\n 'stroke-linecap': 'strokeLineCap',\n 'stroke-linejoin': 'strokeLineJoin',\n 'stroke-miterlimit': 'strokeMiterLimit',\n 'stroke-opacity': 'strokeOpacity',\n 'stroke-width': 'strokeWidth',\n 'text-decoration': 'textDecoration',\n 'text-anchor': 'textAnchor',\n opacity: 'opacity',\n 'clip-path': 'clipPath',\n 'clip-rule': 'clipRule',\n 'vector-effect': 'strokeUniform',\n 'image-rendering': 'imageSmoothing',\n },\n colorAttributes = {\n stroke: 'strokeOpacity',\n fill: 'fillOpacity',\n },\n fSize = 'font-size',\n cPath = 'clip-path';\n\nexport const svgValidTagNamesRegEx = getSvgRegex(svgValidTagNames);\n\nexport const svgViewBoxElementsRegEx = getSvgRegex(svgViewBoxElements);\n\nexport const svgInvalidAncestorsRegEx = getSvgRegex(svgInvalidAncestors);\n\nexport const svgValidParentsRegEx = getSvgRegex(svgValidParents);\n\n// http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute\n// matches, e.g.: +14.56e-12, etc.\nexport const reViewBoxAttrValue = new RegExp(\n '^' +\n '\\\\s*(' +\n reNum +\n '+)\\\\s*,?' +\n '\\\\s*(' +\n reNum +\n '+)\\\\s*,?' +\n '\\\\s*(' +\n reNum +\n '+)\\\\s*,?' +\n '\\\\s*(' +\n reNum +\n '+)\\\\s*' +\n '$'\n);\n","//@ts-nocheck\n\nimport { cache } from '../cache';\nimport { config } from '../config';\nimport { fabric } from '../../HEADER';\nimport { halfPI, PiBy180 } from '../constants';\nimport { commaWsp, rePathCommand } from '../parser/constants';\nimport { Point } from '../point.class';\nimport { cos } from './misc/cos';\nimport { sin } from './misc/sin';\nimport { multiplyTransformMatrices, transformPoint } from './misc/matrix';\n\nconst commandLengths = {\n m: 2,\n l: 2,\n h: 1,\n v: 1,\n c: 6,\n s: 4,\n q: 4,\n t: 2,\n a: 7,\n};\nconst repeatedCommands = {\n m: 'l',\n M: 'L',\n};\n\nconst segmentToBezier = (\n th2,\n th3,\n cosTh,\n sinTh,\n rx,\n ry,\n cx1,\n cy1,\n mT,\n fromX,\n fromY\n) => {\n const costh2 = cos(th2),\n sinth2 = sin(th2),\n costh3 = cos(th3),\n sinth3 = sin(th3),\n toX = cosTh * rx * costh3 - sinTh * ry * sinth3 + cx1,\n toY = sinTh * rx * costh3 + cosTh * ry * sinth3 + cy1,\n cp1X = fromX + mT * (-cosTh * rx * sinth2 - sinTh * ry * costh2),\n cp1Y = fromY + mT * (-sinTh * rx * sinth2 + cosTh * ry * costh2),\n cp2X = toX + mT * (cosTh * rx * sinth3 + sinTh * ry * costh3),\n cp2Y = toY + mT * (sinTh * rx * sinth3 - cosTh * ry * costh3);\n\n return ['C', cp1X, cp1Y, cp2X, cp2Y, toX, toY];\n};\n\n/* Adapted from http://dxr.mozilla.org/mozilla-central/source/content/svg/content/src/nsSVGPathDataParser.cpp\n * by Andrea Bogazzi code is under MPL. if you don't have a copy of the license you can take it here\n * http://mozilla.org/MPL/2.0/\n */\nconst arcToSegments = (toX, toY, rx, ry, large, sweep, rotateX) => {\n let fromX = 0,\n fromY = 0,\n root = 0;\n const PI = Math.PI,\n th = rotateX * PiBy180,\n sinTh = sin(th),\n cosTh = cos(th),\n px = 0.5 * (-cosTh * toX - sinTh * toY),\n py = 0.5 * (-cosTh * toY + sinTh * toX),\n rx2 = rx ** 2,\n ry2 = ry ** 2,\n py2 = py ** 2,\n px2 = px ** 2,\n pl = rx2 * ry2 - rx2 * py2 - ry2 * px2;\n let _rx = Math.abs(rx);\n let _ry = Math.abs(ry);\n\n if (pl < 0) {\n const s = Math.sqrt(1 - pl / (rx2 * ry2));\n _rx *= s;\n _ry *= s;\n } else {\n root =\n (large === sweep ? -1.0 : 1.0) * Math.sqrt(pl / (rx2 * py2 + ry2 * px2));\n }\n\n const cx = (root * _rx * py) / _ry,\n cy = (-root * _ry * px) / _rx,\n cx1 = cosTh * cx - sinTh * cy + toX * 0.5,\n cy1 = sinTh * cx + cosTh * cy + toY * 0.5;\n let mTheta = calcVectorAngle(1, 0, (px - cx) / _rx, (py - cy) / _ry);\n let dtheta = calcVectorAngle(\n (px - cx) / _rx,\n (py - cy) / _ry,\n (-px - cx) / _rx,\n (-py - cy) / _ry\n );\n\n if (sweep === 0 && dtheta > 0) {\n dtheta -= 2 * PI;\n } else if (sweep === 1 && dtheta < 0) {\n dtheta += 2 * PI;\n }\n\n // Convert into cubic bezier segments <= 90deg\n const segments = Math.ceil(Math.abs((dtheta / PI) * 2)),\n result = new Array(segments),\n mDelta = dtheta / segments,\n mT =\n ((8 / 3) * Math.sin(mDelta / 4) * Math.sin(mDelta / 4)) /\n Math.sin(mDelta / 2);\n let th3 = mTheta + mDelta;\n\n for (let i = 0; i < segments; i++) {\n result[i] = segmentToBezier(\n mTheta,\n th3,\n cosTh,\n sinTh,\n _rx,\n _ry,\n cx1,\n cy1,\n mT,\n fromX,\n fromY\n );\n fromX = result[i][5];\n fromY = result[i][6];\n mTheta = th3;\n th3 += mDelta;\n }\n return result;\n};\n\n/*\n * Private\n */\nconst calcVectorAngle = (ux, uy, vx, vy) => {\n const ta = Math.atan2(uy, ux),\n tb = Math.atan2(vy, vx);\n if (tb >= ta) {\n return tb - ta;\n } else {\n return 2 * Math.PI - (ta - tb);\n }\n};\n\n// functions for the Cubic beizer\n// taken from: https://github.com/konvajs/konva/blob/7.0.5/src/shapes/Path.ts#L350\nconst CB1 = (t) => t ** 3;\nconst CB2 = (t) => 3 * t ** 2 * (1 - t);\nconst CB3 = (t) => 3 * t * (1 - t) ** 2;\nconst CB4 = (t) => (1 - t) ** 3;\n\n/**\n * Calculate bounding box of a beziercurve\n * @param {Number} x0 starting point\n * @param {Number} y0\n * @param {Number} x1 first control point\n * @param {Number} y1\n * @param {Number} x2 secondo control point\n * @param {Number} y2\n * @param {Number} x3 end of bezier\n * @param {Number} y3\n */\n// taken from http://jsbin.com/ivomiq/56/edit no credits available for that.\n// TODO: can we normalize this with the starting points set at 0 and then translated the bbox?\nexport function getBoundsOfCurve(x0, y0, x1, y1, x2, y2, x3, y3) {\n let argsString;\n if (config.cachesBoundsOfCurve) {\n // eslint-disable-next-line\n argsString = [...arguments].join();\n if (cache.boundsOfCurveCache[argsString]) {\n return cache.boundsOfCurveCache[argsString];\n }\n }\n\n const sqrt = Math.sqrt,\n abs = Math.abs,\n tvalues = [],\n bounds = [[], []];\n\n let b = 6 * x0 - 12 * x1 + 6 * x2;\n let a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3;\n let c = 3 * x1 - 3 * x0;\n\n for (let i = 0; i < 2; ++i) {\n if (i > 0) {\n b = 6 * y0 - 12 * y1 + 6 * y2;\n a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3;\n c = 3 * y1 - 3 * y0;\n }\n\n if (abs(a) < 1e-12) {\n if (abs(b) < 1e-12) {\n continue;\n }\n const t = -c / b;\n if (0 < t && t < 1) {\n tvalues.push(t);\n }\n continue;\n }\n const b2ac = b * b - 4 * c * a;\n if (b2ac < 0) {\n continue;\n }\n const sqrtb2ac = sqrt(b2ac);\n const t1 = (-b + sqrtb2ac) / (2 * a);\n if (0 < t1 && t1 < 1) {\n tvalues.push(t1);\n }\n const t2 = (-b - sqrtb2ac) / (2 * a);\n if (0 < t2 && t2 < 1) {\n tvalues.push(t2);\n }\n }\n\n let j = tvalues.length;\n const jlen = j;\n const iterator = getPointOnCubicBezierIterator(\n x0,\n y0,\n x1,\n y1,\n x2,\n y2,\n x3,\n y3\n );\n while (j--) {\n const { x, y } = iterator(tvalues[j]);\n bounds[0][j] = x;\n bounds[1][j] = y;\n }\n\n bounds[0][jlen] = x0;\n bounds[1][jlen] = y0;\n bounds[0][jlen + 1] = x3;\n bounds[1][jlen + 1] = y3;\n const result = [\n {\n x: Math.min(...bounds[0]),\n y: Math.min(...bounds[1]),\n },\n {\n x: Math.max(...bounds[0]),\n y: Math.max(...bounds[1]),\n },\n ];\n if (config.cachesBoundsOfCurve) {\n cache.boundsOfCurveCache[argsString] = result;\n }\n return result;\n}\n\n/**\n * Converts arc to a bunch of bezier curves\n * @param {Number} fx starting point x\n * @param {Number} fy starting point y\n * @param {Array} coords Arc command\n */\nexport const fromArcToBeziers = (\n fx,\n fy,\n [_, rx, ry, rot, large, sweep, tx, ty] = []\n) => {\n const segsNorm = arcToSegments(tx - fx, ty - fy, rx, ry, large, sweep, rot);\n\n for (let i = 0, len = segsNorm.length; i < len; i++) {\n segsNorm[i][1] += fx;\n segsNorm[i][2] += fy;\n segsNorm[i][3] += fx;\n segsNorm[i][4] += fy;\n segsNorm[i][5] += fx;\n segsNorm[i][6] += fy;\n }\n return segsNorm;\n};\n\n/**\n * This function take a parsed SVG path and make it simpler for fabricJS logic.\n * simplification consist of: only UPPERCASE absolute commands ( relative converted to absolute )\n * S converted in C, T converted in Q, A converted in C.\n * @param {Array} path the array of commands of a parsed svg path for fabric.Path\n * @return {Array} the simplified array of commands of a parsed svg path for fabric.Path\n */\nexport const makePathSimpler = (path) => {\n // x and y represent the last point of the path. the previous command point.\n // we add them to each relative command to make it an absolute comment.\n // we also swap the v V h H with L, because are easier to transform.\n let x = 0,\n y = 0;\n const len = path.length;\n // x1 and y1 represent the last point of the subpath. the subpath is started with\n // m or M command. When a z or Z command is drawn, x and y need to be resetted to\n // the last x1 and y1.\n let x1 = 0,\n y1 = 0;\n // previous will host the letter of the previous command, to handle S and T.\n // controlX and controlY will host the previous reflected control point\n let destinationPath = [],\n previous,\n controlX,\n controlY;\n for (let i = 0; i < len; ++i) {\n let converted = false;\n const current = path[i].slice(0);\n switch (\n current[0] // first letter\n ) {\n case 'l': // lineto, relative\n current[0] = 'L';\n current[1] += x;\n current[2] += y;\n // falls through\n case 'L':\n x = current[1];\n y = current[2];\n break;\n case 'h': // horizontal lineto, relative\n current[1] += x;\n // falls through\n case 'H':\n current[0] = 'L';\n current[2] = y;\n x = current[1];\n break;\n case 'v': // vertical lineto, relative\n current[1] += y;\n // falls through\n case 'V':\n current[0] = 'L';\n y = current[1];\n current[1] = x;\n current[2] = y;\n break;\n case 'm': // moveTo, relative\n current[0] = 'M';\n current[1] += x;\n current[2] += y;\n // falls through\n case 'M':\n x = current[1];\n y = current[2];\n x1 = current[1];\n y1 = current[2];\n break;\n case 'c': // bezierCurveTo, relative\n current[0] = 'C';\n current[1] += x;\n current[2] += y;\n current[3] += x;\n current[4] += y;\n current[5] += x;\n current[6] += y;\n // falls through\n case 'C':\n controlX = current[3];\n controlY = current[4];\n x = current[5];\n y = current[6];\n break;\n case 's': // shorthand cubic bezierCurveTo, relative\n current[0] = 'S';\n current[1] += x;\n current[2] += y;\n current[3] += x;\n current[4] += y;\n // falls through\n case 'S':\n // would be sScC but since we are swapping sSc for C, we check just that.\n if (previous === 'C') {\n // calculate reflection of previous control points\n controlX = 2 * x - controlX;\n controlY = 2 * y - controlY;\n } else {\n // If there is no previous command or if the previous command was not a C, c, S, or s,\n // the control point is coincident with the current point\n controlX = x;\n controlY = y;\n }\n x = current[3];\n y = current[4];\n current[0] = 'C';\n current[5] = current[3];\n current[6] = current[4];\n current[3] = current[1];\n current[4] = current[2];\n current[1] = controlX;\n current[2] = controlY;\n // current[3] and current[4] are NOW the second control point.\n // we keep it for the next reflection.\n controlX = current[3];\n controlY = current[4];\n break;\n case 'q': // quadraticCurveTo, relative\n current[0] = 'Q';\n current[1] += x;\n current[2] += y;\n current[3] += x;\n current[4] += y;\n // falls through\n case 'Q':\n controlX = current[1];\n controlY = current[2];\n x = current[3];\n y = current[4];\n break;\n case 't': // shorthand quadraticCurveTo, relative\n current[0] = 'T';\n current[1] += x;\n current[2] += y;\n // falls through\n case 'T':\n if (previous === 'Q') {\n // calculate reflection of previous control point\n controlX = 2 * x - controlX;\n controlY = 2 * y - controlY;\n } else {\n // If there is no previous command or if the previous command was not a Q, q, T or t,\n // assume the control point is coincident with the current point\n controlX = x;\n controlY = y;\n }\n current[0] = 'Q';\n x = current[1];\n y = current[2];\n current[1] = controlX;\n current[2] = controlY;\n current[3] = x;\n current[4] = y;\n break;\n case 'a':\n current[0] = 'A';\n current[6] += x;\n current[7] += y;\n // falls through\n case 'A':\n converted = true;\n destinationPath = destinationPath.concat(\n fromArcToBeziers(x, y, current)\n );\n x = current[6];\n y = current[7];\n break;\n case 'z':\n case 'Z':\n x = x1;\n y = y1;\n break;\n default:\n }\n if (!converted) {\n destinationPath.push(current);\n }\n previous = current[0];\n }\n return destinationPath;\n};\n\n// todo verify if we can just use the point class here\n/**\n * Calc length from point x1,y1 to x2,y2\n * @param {Number} x1 starting point x\n * @param {Number} y1 starting point y\n * @param {Number} x2 starting point x\n * @param {Number} y2 starting point y\n * @return {Number} length of segment\n */\nconst calcLineLength = (x1, y1, x2, y2) =>\n Math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2);\n\nconst getPointOnCubicBezierIterator =\n (p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) => (pct) => {\n const c1 = CB1(pct),\n c2 = CB2(pct),\n c3 = CB3(pct),\n c4 = CB4(pct);\n return {\n x: p4x * c1 + p3x * c2 + p2x * c3 + p1x * c4,\n y: p4y * c1 + p3y * c2 + p2y * c3 + p1y * c4,\n };\n };\n\nconst QB1 = (t) => t ** 2;\nconst QB2 = (t) => 2 * t * (1 - t);\nconst QB3 = (t) => (1 - t) ** 2;\n\nconst getTangentCubicIterator =\n (p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) => (pct) => {\n const qb1 = QB1(pct),\n qb2 = QB2(pct),\n qb3 = QB3(pct),\n tangentX =\n 3 * (qb3 * (p2x - p1x) + qb2 * (p3x - p2x) + qb1 * (p4x - p3x)),\n tangentY =\n 3 * (qb3 * (p2y - p1y) + qb2 * (p3y - p2y) + qb1 * (p4y - p3y));\n return Math.atan2(tangentY, tangentX);\n };\n\nconst getPointOnQuadraticBezierIterator =\n (p1x, p1y, p2x, p2y, p3x, p3y) => (pct) => {\n const c1 = QB1(pct),\n c2 = QB2(pct),\n c3 = QB3(pct);\n return {\n x: p3x * c1 + p2x * c2 + p1x * c3,\n y: p3y * c1 + p2y * c2 + p1y * c3,\n };\n };\n\nconst getTangentQuadraticIterator = (p1x, p1y, p2x, p2y, p3x, p3y) => (pct) => {\n const invT = 1 - pct,\n tangentX = 2 * (invT * (p2x - p1x) + pct * (p3x - p2x)),\n tangentY = 2 * (invT * (p2y - p1y) + pct * (p3y - p2y));\n return Math.atan2(tangentY, tangentX);\n};\n\n// this will run over a path segment ( a cubic or quadratic segment) and approximate it\n// with 100 segemnts. This will good enough to calculate the length of the curve\nconst pathIterator = (iterator, x1, y1) => {\n let tempP = { x: x1, y: y1 },\n tmpLen = 0;\n for (let perc = 1; perc <= 100; perc += 1) {\n const p = iterator(perc / 100);\n tmpLen += calcLineLength(tempP.x, tempP.y, p.x, p.y);\n tempP = p;\n }\n return tmpLen;\n};\n\n/**\n * Given a pathInfo, and a distance in pixels, find the percentage from 0 to 1\n * that correspond to that pixels run over the path.\n * The percentage will be then used to find the correct point on the canvas for the path.\n * @param {Array} segInfo fabricJS collection of information on a parsed path\n * @param {Number} distance from starting point, in pixels.\n * @return {Object} info object with x and y ( the point on canvas ) and angle, the tangent on that point;\n */\nconst findPercentageForDistance = (segInfo, distance) => {\n let perc = 0,\n tmpLen = 0,\n tempP = { x: segInfo.x, y: segInfo.y },\n p,\n nextLen,\n nextStep = 0.01,\n lastPerc;\n // nextStep > 0.0001 covers 0.00015625 that 1/64th of 1/100\n // the path\n const iterator = segInfo.iterator,\n angleFinder = segInfo.angleFinder;\n while (tmpLen < distance && nextStep > 0.0001) {\n p = iterator(perc);\n lastPerc = perc;\n nextLen = calcLineLength(tempP.x, tempP.y, p.x, p.y);\n // compare tmpLen each cycle with distance, decide next perc to test.\n if (nextLen + tmpLen > distance) {\n // we discard this step and we make smaller steps.\n perc -= nextStep;\n nextStep /= 2;\n } else {\n tempP = p;\n perc += nextStep;\n tmpLen += nextLen;\n }\n }\n p.angle = angleFinder(lastPerc);\n return p;\n};\n\n/**\n * Run over a parsed and simplifed path and extract some informations.\n * informations are length of each command and starting point\n * @param {Array} path fabricJS parsed path commands\n * @return {Array} path commands informations\n */\nexport const getPathSegmentsInfo = (path) => {\n let totalLength = 0,\n current,\n //x2 and y2 are the coords of segment start\n //x1 and y1 are the coords of the current point\n x1 = 0,\n y1 = 0,\n x2 = 0,\n y2 = 0,\n iterator,\n tempInfo,\n angleFinder;\n const len = path.length,\n info = [];\n for (let i = 0; i < len; i++) {\n current = path[i];\n tempInfo = {\n x: x1,\n y: y1,\n command: current[0],\n };\n switch (\n current[0] //first letter\n ) {\n case 'M':\n tempInfo.length = 0;\n x2 = x1 = current[1];\n y2 = y1 = current[2];\n break;\n case 'L':\n tempInfo.length = calcLineLength(x1, y1, current[1], current[2]);\n x1 = current[1];\n y1 = current[2];\n break;\n case 'C':\n iterator = getPointOnCubicBezierIterator(\n x1,\n y1,\n current[1],\n current[2],\n current[3],\n current[4],\n current[5],\n current[6]\n );\n angleFinder = getTangentCubicIterator(\n x1,\n y1,\n current[1],\n current[2],\n current[3],\n current[4],\n current[5],\n current[6]\n );\n tempInfo.iterator = iterator;\n tempInfo.angleFinder = angleFinder;\n tempInfo.length = pathIterator(iterator, x1, y1);\n x1 = current[5];\n y1 = current[6];\n break;\n case 'Q':\n iterator = getPointOnQuadraticBezierIterator(\n x1,\n y1,\n current[1],\n current[2],\n current[3],\n current[4]\n );\n angleFinder = getTangentQuadraticIterator(\n x1,\n y1,\n current[1],\n current[2],\n current[3],\n current[4]\n );\n tempInfo.iterator = iterator;\n tempInfo.angleFinder = angleFinder;\n tempInfo.length = pathIterator(iterator, x1, y1);\n x1 = current[3];\n y1 = current[4];\n break;\n case 'Z':\n case 'z':\n // we add those in order to ease calculations later\n tempInfo.destX = x2;\n tempInfo.destY = y2;\n tempInfo.length = calcLineLength(x1, y1, x2, y2);\n x1 = x2;\n y1 = y2;\n break;\n }\n totalLength += tempInfo.length;\n info.push(tempInfo);\n }\n info.push({ length: totalLength, x: x1, y: y1 });\n return info;\n};\n\nexport const getPointOnPath = (path, distance, infos) => {\n if (!infos) {\n infos = getPathSegmentsInfo(path);\n }\n let i = 0;\n while (distance - infos[i].length > 0 && i < infos.length - 2) {\n distance -= infos[i].length;\n i++;\n }\n // var distance = infos[infos.length - 1] * perc;\n const segInfo = infos[i],\n segPercent = distance / segInfo.length,\n command = segInfo.command,\n segment = path[i];\n let info;\n\n switch (command) {\n case 'M':\n return { x: segInfo.x, y: segInfo.y, angle: 0 };\n case 'Z':\n case 'z':\n info = new Point(segInfo.x, segInfo.y).lerp(\n new Point(segInfo.destX, segInfo.destY),\n segPercent\n );\n info.angle = Math.atan2(\n segInfo.destY - segInfo.y,\n segInfo.destX - segInfo.x\n );\n return info;\n case 'L':\n info = new Point(segInfo.x, segInfo.y).lerp(\n new Point(segment[1], segment[2]),\n segPercent\n );\n info.angle = Math.atan2(segment[2] - segInfo.y, segment[1] - segInfo.x);\n return info;\n case 'C':\n return findPercentageForDistance(segInfo, distance);\n case 'Q':\n return findPercentageForDistance(segInfo, distance);\n }\n};\n\n/**\n *\n * @param {string} pathString\n * @return {(string|number)[][]} An array of SVG path commands\n * @example Usage\n * parsePath('M 3 4 Q 3 5 2 1 4 0 Q 9 12 2 1 4 0') === [\n * ['M', 3, 4],\n * ['Q', 3, 5, 2, 1, 4, 0],\n * ['Q', 9, 12, 2, 1, 4, 0],\n * ];\n *\n */\nexport const parsePath = (pathString) => {\n // one of commands (m,M,l,L,q,Q,c,C,etc.) followed by non-command characters (i.e. command values)\n const re = rePathCommand,\n rNumber = '[-+]?(?:\\\\d*\\\\.\\\\d+|\\\\d+\\\\.?)(?:[eE][-+]?\\\\d+)?\\\\s*',\n rNumberCommaWsp = `(${rNumber})${commaWsp}`,\n rFlagCommaWsp = `([01])${commaWsp}?`,\n rArcSeq = `${rNumberCommaWsp}?${rNumberCommaWsp}?${rNumberCommaWsp}${rFlagCommaWsp}${rFlagCommaWsp}${rNumberCommaWsp}?(${rNumber})`,\n regArcArgumentSequence = new RegExp(rArcSeq, 'g'),\n result = [];\n\n if (!pathString || !pathString.match) {\n return result;\n }\n const path = pathString.match(/[mzlhvcsqta][^mzlhvcsqta]*/gi);\n\n for (let i = 0, len = path.length; i < len; i++) {\n const currentPath = path[i];\n const coordsStr = currentPath.slice(1).trim();\n const coords = [];\n let command = currentPath.charAt(0);\n const coordsParsed = [command];\n\n if (command.toLowerCase() === 'a') {\n // arcs have special flags that apparently don't require spaces so handle special\n for (let args; (args = regArcArgumentSequence.exec(coordsStr)); ) {\n for (let j = 1; j < args.length; j++) {\n coords.push(args[j]);\n }\n }\n } else {\n let match;\n while ((match = re.exec(coordsStr))) {\n coords.push(match[0]);\n }\n }\n\n for (let j = 0, jlen = coords.length; j < jlen; j++) {\n const parsed = parseFloat(coords[j]);\n if (!isNaN(parsed)) {\n coordsParsed.push(parsed);\n }\n }\n\n const commandLength = commandLengths[command.toLowerCase()],\n repeatedCommand = repeatedCommands[command] || command;\n\n if (coordsParsed.length - 1 > commandLength) {\n for (\n let k = 1, klen = coordsParsed.length;\n k < klen;\n k += commandLength\n ) {\n result.push([command].concat(coordsParsed.slice(k, k + commandLength)));\n command = repeatedCommand;\n }\n } else {\n result.push(coordsParsed);\n }\n }\n return result;\n};\n\n/**\n *\n * Converts points to a smooth SVG path\n * @param {{ x: number,y: number }[]} points Array of points\n * @param {number} [correction] Apply a correction to the path (usually we use `width / 1000`). If value is undefined 0 is used as the correction value.\n * @return {(string|number)[][]} An array of SVG path commands\n */\nexport const getSmoothPathFromPoints = (points, correction = 0) => {\n let p1 = new Point(points[0]),\n p2 = new Point(points[1]),\n multSignX = 1,\n multSignY = 0;\n const path = [],\n len = points.length,\n manyPoints = len > 2;\n\n if (manyPoints) {\n multSignX = points[2].x < p2.x ? -1 : points[2].x === p2.x ? 0 : 1;\n multSignY = points[2].y < p2.y ? -1 : points[2].y === p2.y ? 0 : 1;\n }\n path.push([\n 'M',\n p1.x - multSignX * correction,\n p1.y - multSignY * correction,\n ]);\n let i;\n for (i = 1; i < len; i++) {\n if (!p1.eq(p2)) {\n const midPoint = p1.midPointFrom(p2);\n // p1 is our bezier control point\n // midpoint is our endpoint\n // start point is p(i-1) value.\n path.push(['Q', p1.x, p1.y, midPoint.x, midPoint.y]);\n }\n p1 = points[i];\n if (i + 1 < points.length) {\n p2 = points[i + 1];\n }\n }\n if (manyPoints) {\n multSignX = p1.x > points[i - 2].x ? 1 : p1.x === points[i - 2].x ? 0 : -1;\n multSignY = p1.y > points[i - 2].y ? 1 : p1.y === points[i - 2].y ? 0 : -1;\n }\n path.push([\n 'L',\n p1.x + multSignX * correction,\n p1.y + multSignY * correction,\n ]);\n return path;\n};\n\n/**\n * Transform a path by transforming each segment.\n * it has to be a simplified path or it won't work.\n * WARNING: this depends from pathOffset for correct operation\n * @param {Array} path fabricJS parsed and simplified path commands\n * @param {Array} transform matrix that represent the transformation\n * @param {Object} [pathOffset] the fabric.Path pathOffset\n * @param {Number} pathOffset.x\n * @param {Number} pathOffset.y\n * @returns {Array} the transformed path\n */\nexport const transformPath = (path, transform, pathOffset) => {\n if (pathOffset) {\n transform = multiplyTransformMatrices(transform, [\n 1,\n 0,\n 0,\n 1,\n -pathOffset.x,\n -pathOffset.y,\n ]);\n }\n return path.map((pathSegment) => {\n const newSegment = pathSegment.slice(0);\n for (let i = 1; i < pathSegment.length - 1; i += 2) {\n const { x, y } = transformPoint(\n {\n x: pathSegment[i],\n y: pathSegment[i + 1],\n },\n transform\n );\n newSegment[i] = x;\n newSegment[i + 1] = y;\n }\n return newSegment;\n });\n};\n\n/**\n * Returns an array of path commands to create a regular polygon\n * @param {number} radius\n * @param {number} numVertexes\n * @returns {(string|number)[][]} An array of SVG path commands\n */\nexport const getRegularPolygonPath = (numVertexes, radius) => {\n const interiorAngle = (Math.PI * 2) / numVertexes;\n // rotationAdjustment rotates the path by 1/2 the interior angle so that the polygon always has a flat side on the bottom\n // This isn't strictly necessary, but it's how we tend to think of and expect polygons to be drawn\n let rotationAdjustment = -halfPI;\n if (numVertexes % 2 === 0) {\n rotationAdjustment += interiorAngle / 2;\n }\n const d = new Array(numVertexes + 1);\n for (let i = 0; i < numVertexes; i++) {\n const rad = i * interiorAngle + rotationAdjustment;\n const { x, y } = new Point(cos(rad), sin(rad)).scalarMultiply(radius);\n d[i] = [i === 0 ? 'M' : 'L', x, y];\n }\n d[numVertexes] = ['Z'];\n return d;\n};\n\n/**\n * Join path commands to go back to svg format\n * @param {Array} pathData fabricJS parsed path commands\n * @return {String} joined path 'M 0 0 L 20 30'\n */\nexport const joinPath = (pathData) =>\n pathData.map((segment) => segment.join(' ')).join(' ');\n","//@ts-nocheck\n// TODO this file needs to go away, cross browser style support is not fabricjs domain.\n\n/**\n * wrapper for setting element's style\n * @memberOf fabric.util\n * @param {HTMLElement} element\n * @param {Object | string} styles\n */\nexport function setStyle(element, styles) {\n const elementStyle = element.style;\n if (!elementStyle) {\n return;\n } else if (typeof styles === 'string') {\n element.style.cssText += ';' + styles;\n } else {\n Object.entries(styles).forEach(([property, value]) =>\n elementStyle.setProperty(property, value)\n );\n }\n}\n","//@ts-nocheck\nimport { noop } from '../constants';\n\n/**\n * Cross-browser abstraction for sending XMLHttpRequest\n * @memberOf fabric.util\n * @deprecated this has to go away, we can use a modern browser method to do the same.\n * @param {String} url URL to send XMLHttpRequest to\n * @param {Object} [options] Options object\n * @param {String} [options.method=\"GET\"]\n * @param {Record} [options.parameters] parameters to append to url in GET or in body\n * @param {String} [options.body] body to send with POST or PUT request\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @param {Function} options.onComplete Callback to invoke when request is completed\n * @return {XMLHttpRequest} request\n */\nexport function request(url, options = {}) {\n const method = options.method ? options.method.toUpperCase() : 'GET',\n onComplete = options.onComplete || noop,\n xhr = new fabric.window.XMLHttpRequest(),\n body = options.body || options.parameters,\n signal = options.signal,\n abort = function () {\n xhr.abort();\n },\n removeListener = function () {\n signal && signal.removeEventListener('abort', abort);\n xhr.onerror = xhr.ontimeout = noop;\n };\n\n if (signal && signal.aborted) {\n throw new Error('`options.signal` is in `aborted` state');\n } else if (signal) {\n signal.addEventListener('abort', abort, { once: true });\n }\n\n /** @ignore */\n xhr.onreadystatechange = function () {\n if (xhr.readyState === 4) {\n removeListener();\n onComplete(xhr);\n xhr.onreadystatechange = noop;\n }\n };\n\n xhr.onerror = xhr.ontimeout = removeListener;\n\n if (method === 'GET' && options.parameters) {\n const { origin, pathname, searchParams } = new URL(url);\n url = `${origin}${pathname}?${new URLSearchParams([\n ...Array.from(searchParams.entries()),\n ...Object.entries(options.parameters),\n ])}`;\n }\n\n xhr.open(method, url, true);\n\n if (method === 'POST' || method === 'PUT') {\n xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');\n }\n\n xhr.send(method === 'GET' ? null : body);\n return xhr;\n}\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\nconst touchEvents = ['touchstart', 'touchmove', 'touchend'];\n\n/**\n * Adds an event listener to an element\n * @function\n * @deprecated\n * @memberOf fabric.util\n * @param {HTMLElement} element\n * @param {String} eventName\n * @param {Function} handler\n */\nexport const addListener = (element, eventName, handler, options) =>\n element && element.addEventListener(eventName, handler, options);\n\n/**\n * Removes an event listener from an element\n * @function\n * @deprecated\n * @memberOf fabric.util\n * @param {HTMLElement} element\n * @param {String} eventName\n * @param {Function} handler\n */\nexport const removeListener = (element, eventName, handler, options) =>\n element && element.removeEventListener(eventName, handler, options);\n\nfunction getTouchInfo(event) {\n const touchProp = event.changedTouches;\n if (touchProp && touchProp[0]) {\n return touchProp[0];\n }\n return event;\n}\n\nexport const getPointer = (event) => {\n const element = event.target,\n scroll = fabric.util.getScrollLeftTop(element),\n _evt = getTouchInfo(event);\n return new Point(_evt.clientX + scroll.left, _evt.clientY + scroll.top);\n};\n\nexport const isTouchEvent = (event) =>\n touchEvents.indexOf(event.type) > -1 || event.pointerType === 'touch';\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\n\n/**\n * Wraps element with another element\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to wrap\n * @param {HTMLElement|String} wrapper Element to wrap with\n * @param {Object} [attributes] Attributes to set on a wrapper\n * @return {HTMLElement} wrapper\n */\nexport function wrapElement(element, wrapper) {\n if (element.parentNode) {\n element.parentNode.replaceChild(wrapper, element);\n }\n wrapper.appendChild(element);\n return wrapper;\n}\n\n/**\n * Returns element scroll offsets\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to operate on\n * @return {Object} Object with left/top values\n */\nexport function getScrollLeftTop(element) {\n let left = 0,\n top = 0;\n\n const docElement = fabric.document.documentElement,\n body = fabric.document.body || {\n scrollLeft: 0,\n scrollTop: 0,\n };\n // While loop checks (and then sets element to) .parentNode OR .host\n // to account for ShadowDOM. We still want to traverse up out of ShadowDOM,\n // but the .parentNode of a root ShadowDOM node will always be null, instead\n // it should be accessed through .host. See http://stackoverflow.com/a/24765528/4383938\n while (element && (element.parentNode || element.host)) {\n // Set element to element parent, or 'host' in case of ShadowDOM\n element = element.parentNode || element.host;\n\n if (element === fabric.document) {\n left = body.scrollLeft || docElement.scrollLeft || 0;\n top = body.scrollTop || docElement.scrollTop || 0;\n } else {\n left += element.scrollLeft || 0;\n top += element.scrollTop || 0;\n }\n\n if (element.nodeType === 1 && element.style.position === 'fixed') {\n break;\n }\n }\n\n return { left, top };\n}\n\n/**\n * Returns offset for a given element\n * @function\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to get offset for\n * @return {Object} Object with \"left\" and \"top\" properties\n */\nexport function getElementOffset(element) {\n let box = { left: 0, top: 0 };\n const doc = element && element.ownerDocument,\n offset = { left: 0, top: 0 },\n offsetAttributes = {\n borderLeftWidth: 'left',\n borderTopWidth: 'top',\n paddingLeft: 'left',\n paddingTop: 'top',\n };\n\n if (!doc) {\n return offset;\n }\n const elemStyle = fabric.document.defaultView.getComputedStyle(element, null);\n for (const attr in offsetAttributes) {\n offset[offsetAttributes[attr]] += parseInt(elemStyle[attr], 10) || 0;\n }\n\n const docElem = doc.documentElement;\n if (typeof element.getBoundingClientRect !== 'undefined') {\n box = element.getBoundingClientRect();\n }\n\n const scrollLeftTop = getScrollLeftTop(element);\n\n return {\n left:\n box.left + scrollLeftTop.left - (docElem.clientLeft || 0) + offset.left,\n top: box.top + scrollLeftTop.top - (docElem.clientTop || 0) + offset.top,\n };\n}\n\n/**\n * Makes element unselectable\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to make unselectable\n * @return {HTMLElement} Element that was passed in\n */\nexport function makeElementUnselectable(element) {\n if (typeof element.onselectstart !== 'undefined') {\n element.onselectstart = () => false;\n }\n element.style.userSelect = 'none';\n return element;\n}\n\n/**\n * Makes element selectable\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to make selectable\n * @return {HTMLElement} Element that was passed in\n */\nexport function makeElementSelectable(element) {\n if (typeof element.onselectstart !== 'undefined') {\n element.onselectstart = null;\n }\n element.style.userSelect = '';\n return element;\n}\n\nexport function getNodeCanvas(element) {\n const impl = fabric.jsdomImplForWrapper(element);\n return impl._canvas || impl._image;\n}\n\nexport function cleanUpJsdomNode(element) {\n if (!fabric.isLikelyNode) {\n return;\n }\n const impl = fabric.jsdomImplForWrapper(element);\n if (impl) {\n impl._image = null;\n impl._canvas = null;\n // unsure if necessary\n impl._currentSrc = null;\n impl._attributes = null;\n impl._classList = null;\n }\n}\n","/**\n * Returns true if context has transparent pixel\n * at specified location (taking tolerance into account)\n * @param {CanvasRenderingContext2D} ctx context\n * @param {Number} x x coordinate in canvasElementCoordinate, not fabric space\n * @param {Number} y y coordinate in canvasElementCoordinate, not fabric space\n * @param {Number} tolerance Tolerance pixels around the point, not alpha tolerance\n * @return {boolean} true if transparent\n */\nexport const isTransparent = (\n ctx: CanvasRenderingContext2D,\n x: number,\n y: number,\n tolerance: number\n): boolean => {\n // If tolerance is > 0 adjust start coords to take into account.\n // If moves off Canvas fix to 0\n if (tolerance > 0) {\n if (x > tolerance) {\n x -= tolerance;\n } else {\n x = 0;\n }\n if (y > tolerance) {\n y -= tolerance;\n } else {\n y = 0;\n }\n }\n\n let _isTransparent = true;\n const { data } = ctx.getImageData(\n x,\n y,\n tolerance * 2 || 1,\n tolerance * 2 || 1\n );\n const l = data.length;\n\n // Split image data - for tolerance > 1, pixelDataSize = 4;\n for (let i = 3; i < l; i += 4) {\n const alphaChannel = data[i];\n if (alphaChannel > 0) {\n // Stop if colour found\n _isTransparent = false;\n break;\n }\n }\n\n return _isTransparent;\n};\n","import { fabric } from '../../../HEADER';\nimport { TObject } from '../../__types__';\nimport { sendObjectToPlane } from './planeChange';\n\n/**\n * Merges 2 clip paths into one visually equal clip path\n *\n * **IMPORTANT**:\\\n * Does **NOT** clone the arguments, clone them proir if necessary.\n *\n * Creates a wrapper (group) that contains one clip path and is clipped by the other so content is kept where both overlap.\n * Use this method if both the clip paths may have nested clip paths of their own, so assigning one to the other's clip path property is not possible.\n *\n * In order to handle the `inverted` property we follow logic described in the following cases:\\\n * **(1)** both clip paths are inverted - the clip paths pass the inverted prop to the wrapper and loose it themselves.\\\n * **(2)** one is inverted and the other isn't - the wrapper shouldn't become inverted and the inverted clip path must clip the non inverted one to produce an identical visual effect.\\\n * **(3)** both clip paths are not inverted - wrapper and clip paths remain unchanged.\n *\n * @memberOf fabric.util\n * @param {fabric.Object} c1\n * @param {fabric.Object} c2\n * @returns {fabric.Object} merged clip path\n */\nexport const mergeClipPaths = (c1: TObject, c2: TObject) => {\n let a = c1,\n b = c2;\n if (a.inverted && !b.inverted) {\n // case (2)\n a = c2;\n b = c1;\n }\n // `b` becomes `a`'s clip path so we transform `b` to `a` coordinate plane\n sendObjectToPlane(b, b.group?.calcTransformMatrix(), a.calcTransformMatrix());\n // assign the `inverted` prop to the wrapping group\n const inverted = a.inverted && b.inverted;\n if (inverted) {\n // case (1)\n a.inverted = b.inverted = false;\n }\n return new fabric.Group([a], { clipPath: b, inverted });\n};\n","import { twoMathPi, halfPI } from '../constants';\n\ntype TEasingFunction = (\n currentTime: number,\n startValue: number,\n byValue: number,\n duration: number\n) => number;\n\n/**\n * Easing functions\n * See Easing Equations by Robert Penner\n * @namespace fabric.util.ease\n */\n\nconst normalize = (a: number, c: number, p: number, s: number) => {\n if (a < Math.abs(c)) {\n a = c;\n s = p / 4;\n } else {\n //handle the 0/0 case:\n if (c === 0 && a === 0) {\n s = (p / twoMathPi) * Math.asin(1);\n } else {\n s = (p / twoMathPi) * Math.asin(c / a);\n }\n }\n return { a, c, p, s };\n};\n\nconst elastic = (\n a: number,\n s: number,\n p: number,\n t: number,\n d: number\n): number =>\n a * Math.pow(2, 10 * (t -= 1)) * Math.sin(((t * d - s) * twoMathPi) / p);\n\n/**\n * Cubic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutCubic: TEasingFunction = (t, b, c, d) =>\n c * ((t /= d - 1) * t ** 2 + 1) + b;\n\n/**\n * Cubic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutCubic: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * t ** 3 + b;\n }\n return (c / 2) * ((t -= 2) * t ** 2 + 2) + b;\n};\n\n/**\n * Quartic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInQuart: TEasingFunction = (t, b, c, d) =>\n c * (t /= d) * t ** 3 + b;\n\n/**\n * Quartic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutQuart: TEasingFunction = (t, b, c, d) =>\n -c * ((t = t / d - 1) * t ** 3 - 1) + b;\n\n/**\n * Quartic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutQuart: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * t ** 4 + b;\n }\n return (-c / 2) * ((t -= 2) * t ** 3 - 2) + b;\n};\n\n/**\n * Quintic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInQuint: TEasingFunction = (t, b, c, d) =>\n c * (t /= d) * t ** 4 + b;\n\n/**\n * Quintic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutQuint: TEasingFunction = (t, b, c, d) =>\n c * ((t /= d - 1) * t ** 4 + 1) + b;\n\n/**\n * Quintic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutQuint: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * t ** 5 + b;\n }\n return (c / 2) * ((t -= 2) * t ** 4 + 2) + b;\n};\n\n/**\n * Sinusoidal easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInSine: TEasingFunction = (t, b, c, d) =>\n -c * Math.cos((t / d) * halfPI) + c + b;\n\n/**\n * Sinusoidal easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutSine: TEasingFunction = (t, b, c, d) =>\n c * Math.sin((t / d) * halfPI) + b;\n\n/**\n * Sinusoidal easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutSine: TEasingFunction = (t, b, c, d) =>\n (-c / 2) * (Math.cos((Math.PI * t) / d) - 1) + b;\n\n/**\n * Exponential easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInExpo: TEasingFunction = (t, b, c, d) =>\n t === 0 ? b : c * 2 ** (10 * (t / d - 1)) + b;\n\n/**\n * Exponential easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutExpo: TEasingFunction = (t, b, c, d) =>\n t === d ? b + c : c * -(2 ** ((-10 * t) / d) + 1) + b;\n\n/**\n * Exponential easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutExpo: TEasingFunction = (t, b, c, d) => {\n if (t === 0) {\n return b;\n }\n if (t === d) {\n return b + c;\n }\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * 2 ** (10 * (t - 1)) + b;\n }\n return (c / 2) * -(2 ** (-10 * --t) + 2) + b;\n};\n\n/**\n * Circular easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInCirc: TEasingFunction = (t, b, c, d) =>\n -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;\n\n/**\n * Circular easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutCirc: TEasingFunction = (t, b, c, d) =>\n c * Math.sqrt(1 - (t = t / d - 1) * t) + b;\n\n/**\n * Circular easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutCirc: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (-c / 2) * (Math.sqrt(1 - t ** 2) - 1) + b;\n }\n return (c / 2) * (Math.sqrt(1 - (t -= 2) * t) + 1) + b;\n};\n\n/**\n * Elastic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInElastic: TEasingFunction = (t, b, c, d) => {\n const s = 1.70158,\n a = c;\n let p = 0;\n if (t === 0) {\n return b;\n }\n t /= d;\n if (t === 1) {\n return b + c;\n }\n if (!p) {\n p = d * 0.3;\n }\n const { a: normA, s: normS, p: normP } = normalize(a, c, p, s);\n return -elastic(normA, normS, normP, t, d) + b;\n};\n\n/**\n * Elastic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutElastic: TEasingFunction = (t, b, c, d) => {\n const s = 1.70158,\n a = c;\n let p = 0;\n if (t === 0) {\n return b;\n }\n t /= d;\n if (t === 1) {\n return b + c;\n }\n if (!p) {\n p = d * 0.3;\n }\n const { a: normA, s: normS, p: normP, c: normC } = normalize(a, c, p, s);\n return (\n normA * 2 ** (-10 * t) * Math.sin(((t * d - normS) * twoMathPi) / normP) +\n normC +\n b\n );\n};\n\n/**\n * Elastic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutElastic: TEasingFunction = (t, b, c, d) => {\n const s = 1.70158,\n a = c;\n let p = 0;\n if (t === 0) {\n return b;\n }\n t /= d / 2;\n if (t === 2) {\n return b + c;\n }\n if (!p) {\n p = d * (0.3 * 1.5);\n }\n const { a: normA, s: normS, p: normP, c: normC } = normalize(a, c, p, s);\n if (t < 1) {\n return -0.5 * elastic(normA, normS, normP, t, d) + b;\n }\n return (\n normA *\n Math.pow(2, -10 * (t -= 1)) *\n Math.sin(((t * d - normS) * twoMathPi) / normP) *\n 0.5 +\n normC +\n b\n );\n};\n\n/**\n * Backwards easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInBack: TEasingFunction = (t, b, c, d, s = 1.70158) =>\n c * (t /= d) * t * ((s + 1) * t - s) + b;\n\n/**\n * Backwards easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutBack: TEasingFunction = (t, b, c, d, s = 1.70158) =>\n c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b;\n\n/**\n * Backwards easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutBack: TEasingFunction = (t, b, c, d, s = 1.70158) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * (t * t * (((s *= 1.525) + 1) * t - s)) + b;\n }\n return (c / 2) * ((t -= 2) * t * (((s *= 1.525) + 1) * t + s) + 2) + b;\n};\n\n/**\n * Bouncing easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutBounce: TEasingFunction = (t, b, c, d) => {\n if ((t /= d) < 1 / 2.75) {\n return c * (7.5625 * t * t) + b;\n } else if (t < 2 / 2.75) {\n return c * (7.5625 * (t -= 1.5 / 2.75) * t + 0.75) + b;\n } else if (t < 2.5 / 2.75) {\n return c * (7.5625 * (t -= 2.25 / 2.75) * t + 0.9375) + b;\n } else {\n return c * (7.5625 * (t -= 2.625 / 2.75) * t + 0.984375) + b;\n }\n};\n\n/**\n * Bouncing easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInBounce: TEasingFunction = (t, b, c, d) =>\n c - easeOutBounce(d - t, 0, c, d) + b;\n\n/**\n * Bouncing easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutBounce: TEasingFunction = (t, b, c, d) =>\n t < d / 2\n ? easeInBounce(t * 2, 0, c, d) * 0.5 + b\n : easeOutBounce(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b;\n\n/**\n * Quadratic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInQuad: TEasingFunction = (t, b, c, d) => c * (t /= d) * t + b;\n\n/**\n * Quadratic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutQuad: TEasingFunction = (t, b, c, d) =>\n -c * (t /= d) * (t - 2) + b;\n\n/**\n * Quadratic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutQuad: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * t ** 2 + b;\n }\n return (-c / 2) * (--t * (t - 2) - 1) + b;\n};\n\n/**\n * Cubic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInCubic: TEasingFunction = (t, b, c, d) =>\n c * (t /= d) * t * t + b;\n","/**\n * Map of the 148 color names with HEX code\n * @see: https://www.w3.org/TR/css3-color/#svg-color\n */\nexport const ColorNameMap = {\n aliceblue: '#F0F8FF',\n antiquewhite: '#FAEBD7',\n aqua: '#00FFFF',\n aquamarine: '#7FFFD4',\n azure: '#F0FFFF',\n beige: '#F5F5DC',\n bisque: '#FFE4C4',\n black: '#000000',\n blanchedalmond: '#FFEBCD',\n blue: '#0000FF',\n blueviolet: '#8A2BE2',\n brown: '#A52A2A',\n burlywood: '#DEB887',\n cadetblue: '#5F9EA0',\n chartreuse: '#7FFF00',\n chocolate: '#D2691E',\n coral: '#FF7F50',\n cornflowerblue: '#6495ED',\n cornsilk: '#FFF8DC',\n crimson: '#DC143C',\n cyan: '#00FFFF',\n darkblue: '#00008B',\n darkcyan: '#008B8B',\n darkgoldenrod: '#B8860B',\n darkgray: '#A9A9A9',\n darkgrey: '#A9A9A9',\n darkgreen: '#006400',\n darkkhaki: '#BDB76B',\n darkmagenta: '#8B008B',\n darkolivegreen: '#556B2F',\n darkorange: '#FF8C00',\n darkorchid: '#9932CC',\n darkred: '#8B0000',\n darksalmon: '#E9967A',\n darkseagreen: '#8FBC8F',\n darkslateblue: '#483D8B',\n darkslategray: '#2F4F4F',\n darkslategrey: '#2F4F4F',\n darkturquoise: '#00CED1',\n darkviolet: '#9400D3',\n deeppink: '#FF1493',\n deepskyblue: '#00BFFF',\n dimgray: '#696969',\n dimgrey: '#696969',\n dodgerblue: '#1E90FF',\n firebrick: '#B22222',\n floralwhite: '#FFFAF0',\n forestgreen: '#228B22',\n fuchsia: '#FF00FF',\n gainsboro: '#DCDCDC',\n ghostwhite: '#F8F8FF',\n gold: '#FFD700',\n goldenrod: '#DAA520',\n gray: '#808080',\n grey: '#808080',\n green: '#008000',\n greenyellow: '#ADFF2F',\n honeydew: '#F0FFF0',\n hotpink: '#FF69B4',\n indianred: '#CD5C5C',\n indigo: '#4B0082',\n ivory: '#FFFFF0',\n khaki: '#F0E68C',\n lavender: '#E6E6FA',\n lavenderblush: '#FFF0F5',\n lawngreen: '#7CFC00',\n lemonchiffon: '#FFFACD',\n lightblue: '#ADD8E6',\n lightcoral: '#F08080',\n lightcyan: '#E0FFFF',\n lightgoldenrodyellow: '#FAFAD2',\n lightgray: '#D3D3D3',\n lightgrey: '#D3D3D3',\n lightgreen: '#90EE90',\n lightpink: '#FFB6C1',\n lightsalmon: '#FFA07A',\n lightseagreen: '#20B2AA',\n lightskyblue: '#87CEFA',\n lightslategray: '#778899',\n lightslategrey: '#778899',\n lightsteelblue: '#B0C4DE',\n lightyellow: '#FFFFE0',\n lime: '#00FF00',\n limegreen: '#32CD32',\n linen: '#FAF0E6',\n magenta: '#FF00FF',\n maroon: '#800000',\n mediumaquamarine: '#66CDAA',\n mediumblue: '#0000CD',\n mediumorchid: '#BA55D3',\n mediumpurple: '#9370DB',\n mediumseagreen: '#3CB371',\n mediumslateblue: '#7B68EE',\n mediumspringgreen: '#00FA9A',\n mediumturquoise: '#48D1CC',\n mediumvioletred: '#C71585',\n midnightblue: '#191970',\n mintcream: '#F5FFFA',\n mistyrose: '#FFE4E1',\n moccasin: '#FFE4B5',\n navajowhite: '#FFDEAD',\n navy: '#000080',\n oldlace: '#FDF5E6',\n olive: '#808000',\n olivedrab: '#6B8E23',\n orange: '#FFA500',\n orangered: '#FF4500',\n orchid: '#DA70D6',\n palegoldenrod: '#EEE8AA',\n palegreen: '#98FB98',\n paleturquoise: '#AFEEEE',\n palevioletred: '#DB7093',\n papayawhip: '#FFEFD5',\n peachpuff: '#FFDAB9',\n peru: '#CD853F',\n pink: '#FFC0CB',\n plum: '#DDA0DD',\n powderblue: '#B0E0E6',\n purple: '#800080',\n rebeccapurple: '#663399',\n red: '#FF0000',\n rosybrown: '#BC8F8F',\n royalblue: '#4169E1',\n saddlebrown: '#8B4513',\n salmon: '#FA8072',\n sandybrown: '#F4A460',\n seagreen: '#2E8B57',\n seashell: '#FFF5EE',\n sienna: '#A0522D',\n silver: '#C0C0C0',\n skyblue: '#87CEEB',\n slateblue: '#6A5ACD',\n slategray: '#708090',\n slategrey: '#708090',\n snow: '#FFFAFA',\n springgreen: '#00FF7F',\n steelblue: '#4682B4',\n tan: '#D2B48C',\n teal: '#008080',\n thistle: '#D8BFD8',\n tomato: '#FF6347',\n turquoise: '#40E0D0',\n violet: '#EE82EE',\n wheat: '#F5DEB3',\n white: '#FFFFFF',\n whitesmoke: '#F5F5F5',\n yellow: '#FFFF00',\n yellowgreen: '#9ACD32',\n};\n","/**\n * Regex matching color in RGB or RGBA formats (ex: rgb(0, 0, 0), rgba(255, 100, 10, 0.5), rgba( 255 , 100 , 10 , 0.5 ), rgb(1,1,1), rgba(100%, 60%, 10%, 0.5))\n * @static\n * @field\n * @memberOf Color\n */\n// eslint-disable-next-line max-len\nexport const reRGBa =\n /^rgba?\\(\\s*(\\d{1,3}(?:\\.\\d+)?%?)\\s*,\\s*(\\d{1,3}(?:\\.\\d+)?%?)\\s*,\\s*(\\d{1,3}(?:\\.\\d+)?%?)\\s*(?:\\s*,\\s*((?:\\d*\\.?\\d+)?)\\s*)?\\)$/i;\n\n/**\n * Regex matching color in HSL or HSLA formats (ex: hsl(200, 80%, 10%), hsla(300, 50%, 80%, 0.5), hsla( 300 , 50% , 80% , 0.5 ))\n * @static\n * @field\n * @memberOf Color\n */\nexport const reHSLa =\n /^hsla?\\(\\s*(\\d{1,3})\\s*,\\s*(\\d{1,3}%)\\s*,\\s*(\\d{1,3}%)\\s*(?:\\s*,\\s*(\\d+(?:\\.\\d+)?)\\s*)?\\)$/i;\n\n/**\n * Regex matching color in HEX format (ex: #FF5544CC, #FF5555, 010155, aff)\n * @static\n * @field\n * @memberOf Color\n */\nexport const reHex = /^#?([0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{4}|[0-9a-f]{3})$/i;\n","/**\n * @private\n * @param {Number} p\n * @param {Number} q\n * @param {Number} t\n * @return {Number}\n */\nexport function hue2rgb(p: number, q: number, t: number): number {\n if (t < 0) {\n t += 1;\n }\n if (t > 1) {\n t -= 1;\n }\n if (t < 1 / 6) {\n return p + (q - p) * 6 * t;\n }\n if (t < 1 / 2) {\n return q;\n }\n if (t < 2 / 3) {\n return p + (q - p) * (2 / 3 - t) * 6;\n }\n return p;\n}\n\n/**\n * Convert a [0, 255] value to hex\n * @param value\n * @returns\n */\nexport function hexify(value: number) {\n const hexValue = value.toString(16).toUpperCase();\n return hexValue.length === 1 ? `0${hexValue}` : hexValue;\n}\n","//@ts-nocheck\nimport { ColorNameMap } from './color_map';\nimport { reHSLa, reHex, reRGBa } from './constants';\nimport { hue2rgb, hexify } from './util';\n\ntype TColorSource = [number, number, number];\n\ntype TColorAlphaSource = [number, number, number, number];\n\n/**\n * @class Color common color operations\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#colors colors}\n */\nexport class Color {\n private _source: TColorAlphaSource;\n\n /**\n *\n * @param {string} [color] optional in hex or rgb(a) or hsl format or from known color list\n */\n constructor(color?: string) {\n if (!color) {\n this.setSource([0, 0, 0, 1]);\n } else {\n this._tryParsingColor(color);\n }\n }\n\n /**\n * @private\n * @param {string} [color] Color value to parse\n */\n _tryParsingColor(color?: string) {\n if (color in ColorNameMap) {\n color = ColorNameMap[color];\n }\n\n const source =\n color === 'transparent'\n ? [255, 255, 255, 0]\n : Color.sourceFromHex(color) ||\n Color.sourceFromRgb(color) ||\n Color.sourceFromHsl(color) || [0, 0, 0, 1]; // color is not recognize let's default to black as canvas does\n\n if (source) {\n this.setSource(source);\n }\n }\n\n /**\n * Adapted from {@link https://gist.github.com/mjackson/5311256 https://gist.github.com/mjackson}\n * @private\n * @param {Number} r Red color value\n * @param {Number} g Green color value\n * @param {Number} b Blue color value\n * @return {TColorSource} Hsl color\n */\n _rgbToHsl(r: number, g: number, b: number): TColorSource {\n r /= 255;\n g /= 255;\n b /= 255;\n const maxValue = Math.max(r, g, b),\n minValue = Math.min(r, g, b);\n\n let h, s;\n const l = (maxValue + minValue) / 2;\n\n if (maxValue === minValue) {\n h = s = 0; // achromatic\n } else {\n const d = maxValue - minValue;\n s = l > 0.5 ? d / (2 - maxValue - minValue) : d / (maxValue + minValue);\n switch (maxValue) {\n case r:\n h = (g - b) / d + (g < b ? 6 : 0);\n break;\n case g:\n h = (b - r) / d + 2;\n break;\n case b:\n h = (r - g) / d + 4;\n break;\n }\n h /= 6;\n }\n\n return [Math.round(h * 360), Math.round(s * 100), Math.round(l * 100)];\n }\n\n /**\n * Returns source of this color (where source is an array representation; ex: [200, 200, 100, 1])\n * @return {TColorAlphaSource}\n */\n getSource() {\n return this._source;\n }\n\n /**\n * Sets source of this color (where source is an array representation; ex: [200, 200, 100, 1])\n * @param {TColorAlphaSource} source\n */\n setSource(source: TColorAlphaSource) {\n this._source = source;\n }\n\n /**\n * Returns color representation in RGB format\n * @return {String} ex: rgb(0-255,0-255,0-255)\n */\n toRgb() {\n const source = this.getSource();\n return `rgb(${source[0]},${source[1]},${source[2]})`;\n }\n\n /**\n * Returns color representation in RGBA format\n * @return {String} ex: rgba(0-255,0-255,0-255,0-1)\n */\n toRgba() {\n const source = this.getSource();\n return `rgba(${source[0]},${source[1]},${source[2]},${source[3]})`;\n }\n\n /**\n * Returns color representation in HSL format\n * @return {String} ex: hsl(0-360,0%-100%,0%-100%)\n */\n toHsl() {\n const source = this.getSource(),\n hsl = this._rgbToHsl(source[0], source[1], source[2]);\n\n return `hsl(${hsl[0]},${hsl[1]}%,${hsl[2]}%)`;\n }\n\n /**\n * Returns color representation in HSLA format\n * @return {String} ex: hsla(0-360,0%-100%,0%-100%,0-1)\n */\n toHsla() {\n const source = this.getSource(),\n hsl = this._rgbToHsl(source[0], source[1], source[2]);\n\n return `hsla(${hsl[0]},${hsl[1]}%,${hsl[2]}%,${source[3]})`;\n }\n\n /**\n * Returns color representation in HEX format\n * @return {String} ex: FF5555\n */\n toHex() {\n const [r, g, b] = this.getSource();\n return `${hexify(r)}${hexify(g)}${hexify(b)}`;\n }\n\n /**\n * Returns color representation in HEXA format\n * @return {String} ex: FF5555CC\n */\n toHexa() {\n const source = this.getSource();\n return `${this.toHex()}${hexify(Math.round(source[3] * 255))}`;\n }\n\n /**\n * Gets value of alpha channel for this color\n * @return {Number} 0-1\n */\n getAlpha() {\n return this.getSource()[3];\n }\n\n /**\n * Sets value of alpha channel for this color\n * @param {Number} alpha Alpha value 0-1\n * @return {Color} thisArg\n */\n setAlpha(alpha: number) {\n const source = this.getSource();\n source[3] = alpha;\n this.setSource(source);\n return this;\n }\n\n /**\n * Transforms color to its grayscale representation\n * @return {Color} thisArg\n */\n toGrayscale() {\n const source = this.getSource(),\n average = parseInt(\n (source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0),\n 10\n ),\n currentAlpha = source[3];\n this.setSource([average, average, average, currentAlpha]);\n return this;\n }\n\n /**\n * Transforms color to its black and white representation\n * @param {Number} threshold\n * @return {Color} thisArg\n */\n toBlackWhite(threshold: number) {\n const source = this.getSource(),\n currentAlpha = source[3];\n let average = Math.round(\n source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11\n );\n\n average = average < (threshold || 127) ? 0 : 255;\n this.setSource([average, average, average, currentAlpha]);\n return this;\n }\n\n /**\n * Overlays color with another color\n * @param {String|Color} otherColor\n * @return {Color} thisArg\n */\n overlayWith(otherColor: string | Color) {\n if (!(otherColor instanceof Color)) {\n otherColor = new Color(otherColor);\n }\n\n const result = [],\n alpha = this.getAlpha(),\n otherAlpha = 0.5,\n source = this.getSource(),\n otherSource = otherColor.getSource();\n\n for (let i = 0; i < 3; i++) {\n result.push(\n Math.round(source[i] * (1 - otherAlpha) + otherSource[i] * otherAlpha)\n );\n }\n\n result[3] = alpha;\n this.setSource(result);\n return this;\n }\n\n /**\n * Returns new color object, when given a color in RGB format\n * @memberOf Color\n * @param {String} color Color value ex: rgb(0-255,0-255,0-255)\n * @return {Color}\n */\n static fromRgb(color: string): Color {\n return Color.fromRgba(color);\n }\n\n /**\n * Returns new color object, when given a color in RGBA format\n * @static\n * @function\n * @memberOf Color\n * @param {String} color\n * @return {Color}\n */\n static fromRgba(color: string): Color {\n return Color.fromSource(Color.sourceFromRgb(color));\n }\n\n /**\n * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in RGB or RGBA format\n * @memberOf Color\n * @param {String} color Color value ex: rgb(0-255,0-255,0-255), rgb(0%-100%,0%-100%,0%-100%)\n * @return {TColorAlphaSource | undefined} source\n */\n static sourceFromRgb(color: string): TColorAlphaSource | undefined {\n const match = color.match(reRGBa);\n if (match) {\n const r =\n (parseInt(match[1], 10) / (/%$/.test(match[1]) ? 100 : 1)) *\n (/%$/.test(match[1]) ? 255 : 1),\n g =\n (parseInt(match[2], 10) / (/%$/.test(match[2]) ? 100 : 1)) *\n (/%$/.test(match[2]) ? 255 : 1),\n b =\n (parseInt(match[3], 10) / (/%$/.test(match[3]) ? 100 : 1)) *\n (/%$/.test(match[3]) ? 255 : 1);\n\n return [\n parseInt(r, 10),\n parseInt(g, 10),\n parseInt(b, 10),\n match[4] ? parseFloat(match[4]) : 1,\n ];\n }\n }\n\n /**\n * Returns new color object, when given a color in HSL format\n * @param {String} color Color value ex: hsl(0-260,0%-100%,0%-100%)\n * @memberOf Color\n * @return {Color}\n */\n static fromHsl(color: string): Color {\n return Color.fromHsla(color);\n }\n\n /**\n * Returns new color object, when given a color in HSLA format\n * @static\n * @function\n * @memberOf Color\n * @param {String} color\n * @return {Color}\n */\n static fromHsla(color: string): Color {\n return Color.fromSource(Color.sourceFromHsl(color));\n }\n\n /**\n * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HSL or HSLA format.\n * Adapted from https://github.com/mjijackson\n * @memberOf Color\n * @param {String} color Color value ex: hsl(0-360,0%-100%,0%-100%) or hsla(0-360,0%-100%,0%-100%, 0-1)\n * @return {TColorAlphaSource | undefined} source\n * @see http://http://www.w3.org/TR/css3-color/#hsl-color\n */\n static sourceFromHsl(color: string): TColorAlphaSource | undefined {\n const match = color.match(reHSLa);\n if (!match) {\n return;\n }\n\n const h = (((parseFloat(match[1]) % 360) + 360) % 360) / 360,\n s = parseFloat(match[2]) / (/%$/.test(match[2]) ? 100 : 1),\n l = parseFloat(match[3]) / (/%$/.test(match[3]) ? 100 : 1);\n let r, g, b;\n\n if (s === 0) {\n r = g = b = l;\n } else {\n const q = l <= 0.5 ? l * (s + 1) : l + s - l * s,\n p = l * 2 - q;\n\n r = hue2rgb(p, q, h + 1 / 3);\n g = hue2rgb(p, q, h);\n b = hue2rgb(p, q, h - 1 / 3);\n }\n\n return [\n Math.round(r * 255),\n Math.round(g * 255),\n Math.round(b * 255),\n match[4] ? parseFloat(match[4]) : 1,\n ];\n }\n\n /**\n * Returns new color object, when given a color in HEX format\n * @static\n * @memberOf Color\n * @param {String} color Color value ex: FF5555\n * @return {Color}\n */\n static fromHex(color: string): Color {\n return Color.fromSource(Color.sourceFromHex(color));\n }\n\n /**\n * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HEX format\n * @static\n * @memberOf Color\n * @param {String} color ex: FF5555 or FF5544CC (RGBa)\n * @return {TColorAlphaSource | undefined} source\n */\n static sourceFromHex(color: string): TColorAlphaSource | undefined {\n if (color.match(reHex)) {\n const value = color.slice(color.indexOf('#') + 1),\n isShortNotation = value.length === 3 || value.length === 4,\n isRGBa = value.length === 8 || value.length === 4,\n r = isShortNotation\n ? value.charAt(0) + value.charAt(0)\n : value.substring(0, 2),\n g = isShortNotation\n ? value.charAt(1) + value.charAt(1)\n : value.substring(2, 4),\n b = isShortNotation\n ? value.charAt(2) + value.charAt(2)\n : value.substring(4, 6),\n a = isRGBa\n ? isShortNotation\n ? value.charAt(3) + value.charAt(3)\n : value.substring(6, 8)\n : 'FF';\n\n return [\n parseInt(r, 16),\n parseInt(g, 16),\n parseInt(b, 16),\n parseFloat((parseInt(a, 16) / 255).toFixed(2)),\n ];\n }\n }\n\n /**\n * Returns new color object, when given color in array representation (ex: [200, 100, 100, 0.5])\n * @static\n * @memberOf Color\n * @param {TColorSource | TColorAlphaSource} source\n * @return {Color}\n */\n static fromSource(source: TColorSource | TColorAlphaSource): Color {\n const oColor = new Color();\n oColor.setSource(source);\n return oColor;\n }\n}\n","import { fabric } from '../../HEADER';\nimport { Color } from './color.class';\nexport { Color };\nfabric.Color = Color;\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\n\n/**\n * Array holding all running animations\n * @memberof fabric\n * @type {AnimationContext[]}\n */\nclass RunningAnimations extends Array {\n /**\n * cancel all running animations at the next requestAnimFrame\n * @returns {AnimationContext[]}\n */\n cancelAll(): any[] {\n const animations = this.splice(0);\n animations.forEach((animation) => animation.cancel());\n return animations;\n }\n\n /**\n * cancel all running animations attached to canvas at the next requestAnimFrame\n * @param {fabric.Canvas} canvas\n * @returns {AnimationContext[]}\n */\n cancelByCanvas(canvas: any) {\n if (!canvas) {\n return [];\n }\n const cancelled = this.filter(\n (animation) =>\n typeof animation.target === 'object' &&\n animation.target.canvas === canvas\n );\n cancelled.forEach((animation) => animation.cancel());\n return cancelled;\n }\n\n /**\n * cancel all running animations for target at the next requestAnimFrame\n * @param {*} target\n * @returns {AnimationContext[]}\n */\n cancelByTarget(target) {\n const cancelled = this.findAnimationsByTarget(target);\n cancelled.forEach((animation) => animation.cancel());\n return cancelled;\n }\n\n /**\n *\n * @param {CancelFunction} cancelFunc the function returned by animate\n * @returns {number}\n */\n findAnimationIndex(cancelFunc) {\n return this.indexOf(this.findAnimation(cancelFunc));\n }\n\n /**\n *\n * @param {CancelFunction} cancelFunc the function returned by animate\n * @returns {AnimationContext | undefined} animation's options object\n */\n findAnimation(cancelFunc) {\n return this.find((animation) => animation.cancel === cancelFunc);\n }\n\n /**\n *\n * @param {*} target the object that is assigned to the target property of the animation context\n * @returns {AnimationContext[]} array of animation options object associated with target\n */\n findAnimationsByTarget(target) {\n if (!target) {\n return [];\n }\n return this.filter((animation) => animation.target === target);\n }\n}\n\nexport const runningAnimations = new RunningAnimations();\n\nfabric.runningAnimations = runningAnimations;\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { runningAnimations } from './animation_registry';\nimport { noop } from '../constants';\n\n/**\n *\n * @typedef {Object} AnimationOptions\n * Animation of a value or list of values.\n * @property {Function} [onChange] Callback; invoked on every value change\n * @property {Function} [onComplete] Callback; invoked when value change is completed\n * @property {number | number[]} [startValue=0] Starting value\n * @property {number | number[]} [endValue=100] Ending value\n * @property {number | number[]} [byValue=100] Value to modify the property by\n * @property {Function} [easing] Easing function\n * @property {number} [duration=500] Duration of change (in ms)\n * @property {Function} [abort] Additional function with logic. If returns true, animation aborts.\n * @property {number} [delay] Delay of animation start (in ms)\n *\n * @typedef {() => void} CancelFunction\n *\n * @typedef {Object} AnimationCurrentState\n * @property {number | number[]} currentValue value in range [`startValue`, `endValue`]\n * @property {number} completionRate value in range [0, 1]\n * @property {number} durationRate value in range [0, 1]\n *\n * @typedef {(AnimationOptions & AnimationCurrentState & { cancel: CancelFunction }} AnimationContext\n */\n\nconst defaultEasing = (t, b, c, d) =>\n -c * Math.cos((t / d) * (Math.PI / 2)) + c + b;\n\n/**\n * Changes value from one to another within certain period of time, invoking callbacks as value is being changed.\n * @memberOf fabric.util\n * @param {AnimationOptions} [options] Animation options\n * When using lists, think of something like this:\n * @example\n * fabric.util.animate({\n * startValue: [1, 2, 3],\n * endValue: [2, 4, 6],\n * onChange: function([x, y, zoom]) {\n * canvas.zoomToPoint(new Point(x, y), zoom);\n * canvas.requestRenderAll();\n * }\n * });\n *\n * @example\n * fabric.util.animate({\n * startValue: 1,\n * endValue: 0,\n * onChange: function(v) {\n * obj.set('opacity', v);\n * canvas.requestRenderAll();\n * }\n * });\n *\n * @returns {CancelFunction} cancel function\n */\nexport function animate(options = {}) {\n let cancel = false;\n\n const {\n startValue = 0,\n duration = 500,\n easing = defaultEasing,\n onChange = noop,\n abort = noop,\n onComplete = noop,\n endValue = 100,\n delay = 0,\n } = options;\n\n const context = {\n ...options,\n currentValue: startValue,\n completionRate: 0,\n durationRate: 0,\n };\n\n const removeFromRegistry = () => {\n const index = runningAnimations.indexOf(context);\n return index > -1 && runningAnimations.splice(index, 1)[0];\n };\n\n context.cancel = function () {\n cancel = true;\n return removeFromRegistry();\n };\n runningAnimations.push(context);\n\n const runner = function (timestamp) {\n const start = timestamp || +new Date(),\n finish = start + duration,\n isMany = Array.isArray(startValue),\n byValue =\n options.byValue ||\n (isMany\n ? startValue.map((value, i) => endValue[i] - value)\n : endValue - startValue);\n\n options.onStart && options.onStart();\n\n (function tick(ticktime) {\n const time = ticktime || +new Date();\n const currentTime = time > finish ? duration : time - start,\n timePerc = currentTime / duration,\n current = isMany\n ? startValue.map((_value, i) =>\n easing(currentTime, _value, byValue[i], duration)\n )\n : easing(currentTime, startValue, byValue, duration),\n valuePerc = isMany\n ? Math.abs((current[0] - startValue[0]) / byValue[0])\n : Math.abs((current - startValue) / byValue);\n // update context\n context.currentValue = isMany ? current.slice() : current;\n context.completionRate = valuePerc;\n context.durationRate = timePerc;\n\n if (cancel) {\n return;\n }\n if (abort(current, valuePerc, timePerc)) {\n removeFromRegistry();\n return;\n }\n if (time > finish) {\n // update context\n context.currentValue = isMany ? endValue.slice() : endValue;\n context.completionRate = 1;\n context.durationRate = 1;\n // execute callbacks\n onChange(isMany ? endValue.slice() : endValue, 1, 1);\n onComplete(endValue, 1, 1);\n removeFromRegistry();\n return;\n } else {\n onChange(current, valuePerc, timePerc);\n requestAnimFrame(tick);\n }\n })(start);\n };\n\n if (delay > 0) {\n setTimeout(() => requestAnimFrame(runner), delay);\n } else {\n requestAnimFrame(runner);\n }\n\n return context.cancel;\n}\n\nconst _requestAnimFrame =\n fabric.window.requestAnimationFrame ||\n function (callback) {\n return fabric.window.setTimeout(callback, 1000 / 60);\n };\n\nconst _cancelAnimFrame =\n fabric.window.cancelAnimationFrame || fabric.window.clearTimeout;\n\n/**\n * requestAnimationFrame polyfill based on http://paulirish.com/2011/requestanimationframe-for-smart-animating/\n * In order to get a precise start time, `requestAnimFrame` should be called as an entry into the method\n * @memberOf fabric.util\n * @param {Function} callback Callback to invoke\n * @param {DOMElement} element optional Element to associate with animation\n */\nexport function requestAnimFrame(...args) {\n return _requestAnimFrame.apply(fabric.window, args);\n}\n\nexport function cancelAnimFrame(...args) {\n return _cancelAnimFrame.apply(fabric.window, args);\n}\n","//@ts-nocheck\nimport { Color } from '../color';\nimport { animate } from './animate';\n\n// Calculate an in-between color. Returns a \"rgba()\" string.\n// Credit: Edwin Martin \n// http://www.bitstorm.org/jquery/color-animation/jquery.animate-colors.js\n// const calculateColor = (begin: number[], end: number[], pos) => {\n// const [r, g, b, _a] = begin.map((beg, index) => beg + pos * (end[index] - beg));\n// const a = begin && end ? parseFloat(_a) : 1;\n// return `rgba(${parseInt(r, 10)},${parseInt(g, 10)},${parseInt(b, 10)},${a})`;\n// }\n\n// color animation is broken. This function pass the tests for some reasons\n// but begin and end aren't array anymore since we improved animate function\n// to handler arrays internally.\nfunction calculateColor(begin, end, pos) {\n let color =\n 'rgba(' +\n parseInt(begin[0] + pos * (end[0] - begin[0]), 10) +\n ',' +\n parseInt(begin[1] + pos * (end[1] - begin[1]), 10) +\n ',' +\n parseInt(begin[2] + pos * (end[2] - begin[2]), 10);\n\n color +=\n ',' + (begin && end ? parseFloat(begin[3] + pos * (end[3] - begin[3])) : 1);\n color += ')';\n return color;\n}\n\nconst defaultColorEasing = (currentTime, duration) =>\n 1 - Math.cos((currentTime / duration) * (Math.PI / 2));\n\n/**\n * Changes the color from one to another within certain period of time, invoking callbacks as value is being changed.\n * @memberOf fabric.util\n * @param {String} fromColor The starting color in hex or rgb(a) format.\n * @param {String} toColor The starting color in hex or rgb(a) format.\n * @param {Number} [duration] Duration of change (in ms).\n * @param {Object} [options] Animation options\n * @param {Function} [options.onChange] Callback; invoked on every value change\n * @param {Function} [options.onComplete] Callback; invoked when value change is completed\n * @param {Function} [options.colorEasing] Easing function. Note that this function only take two arguments (currentTime, duration). Thus the regular animation easing functions cannot be used.\n * @param {Function} [options.abort] Additional function with logic. If returns true, onComplete is called.\n * @returns {Function} abort function\n */\nexport function animateColor(\n fromColor,\n toColor,\n duration = 500,\n {\n colorEasing = defaultColorEasing,\n onComplete,\n onChange,\n ...restOfOptions\n } = {}\n) {\n const startColor = new Color(fromColor).getSource(),\n endColor = new Color(toColor).getSource();\n return animate({\n ...restOfOptions,\n duration,\n startValue: startColor,\n endValue: endColor,\n byValue: endColor,\n easing: (currentTime, startValue, byValue, duration) =>\n calculateColor(startValue, byValue, colorEasing(currentTime, duration)),\n // has to take in account for color restoring;\n onComplete: (current, valuePerc, timePerc) =>\n onComplete?.(calculateColor(endColor, endColor, 0), valuePerc, timePerc),\n onChange: (current, valuePerc, timePerc) => {\n if (onChange) {\n if (Array.isArray(current)) {\n return onChange(\n calculateColor(current, current, 0),\n valuePerc,\n timePerc\n );\n }\n onChange(current, valuePerc, timePerc);\n }\n },\n });\n}\n","//@ts-nocheck\nimport { noop } from '../constants';\n\nfunction addMethods(klass, source, parent) {\n for (var property in source) {\n if (\n property in klass.prototype &&\n typeof klass.prototype[property] === 'function' &&\n (source[property] + '').indexOf('callSuper') > -1\n ) {\n klass.prototype[property] = (function (property) {\n return function (...args) {\n var superclass = this.constructor.superclass;\n this.constructor.superclass = parent;\n var returnValue = source[property].call(this, ...args);\n this.constructor.superclass = superclass;\n\n if (property !== 'initialize') {\n return returnValue;\n }\n };\n })(property);\n } else {\n klass.prototype[property] = source[property];\n }\n }\n}\n\nfunction Subclass() {}\n\nfunction callSuper(methodName, ...args) {\n var parentMethod = null,\n _this = this;\n\n // climb prototype chain to find method not equal to callee's method\n while (_this.constructor.superclass) {\n var superClassMethod = _this.constructor.superclass.prototype[methodName];\n if (_this[methodName] !== superClassMethod) {\n parentMethod = superClassMethod;\n break;\n }\n // eslint-disable-next-line\n _this = _this.constructor.superclass.prototype;\n }\n\n if (!parentMethod) {\n return console.log(\n 'tried to callSuper ' +\n methodName +\n ', method not found in prototype chain',\n this\n );\n }\n\n return parentMethod.call(this, ...args);\n}\n\n/**\n * Helper for creation of \"classes\".\n * @memberOf fabric.util\n * @param {Function} [parent] optional \"Class\" to inherit from\n * @param {Object} [properties] Properties shared by all instances of this class\n * (be careful modifying objects defined here as this would affect all instances)\n */\nexport function createClass(...args) {\n var parent = null,\n properties = [...args];\n\n if (typeof args[0] === 'function') {\n parent = properties.shift();\n }\n function klass(...klassArgs) {\n this.initialize.call(this, ...klassArgs);\n }\n\n klass.superclass = parent;\n klass.subclasses = [];\n\n if (parent) {\n Subclass.prototype = parent.prototype;\n klass.prototype = new Subclass();\n parent.subclasses.push(klass);\n }\n for (var i = 0, length = properties.length; i < length; i++) {\n addMethods(klass, properties[i], parent);\n }\n if (!klass.prototype.initialize) {\n klass.prototype.initialize = noop;\n }\n klass.prototype.constructor = klass;\n klass.prototype.callSuper = callSuper;\n return klass;\n}\n","//@ts-nocheck\nimport { fabric } from '../../../HEADER';\nimport { cos } from './cos';\nimport { sin } from './sin';\nimport {\n rotateVector,\n createVector,\n calcAngleBetweenVectors,\n getHatVector,\n getBisector,\n} from './vectors';\nimport { degreesToRadians, radiansToDegrees } from './radiansDegreesConversion';\nimport { rotatePoint } from './rotatePoint';\nimport { getRandomInt, removeFromArray } from '../internals';\nimport { projectStrokeOnPoints } from './projectStroke';\nimport {\n transformPoint,\n invertTransform,\n composeMatrix,\n qrDecompose,\n calcDimensionsMatrix,\n calcRotateMatrix,\n multiplyTransformMatrices,\n} from './matrix';\nimport { stylesFromArray, stylesToArray, hasStyleChanged } from './textStyles';\nimport { clone, extend } from '../lang_object';\nimport {\n createCanvasElement,\n createImage,\n copyCanvasElement,\n toDataURL,\n} from './dom';\nimport { toFixed } from './toFixed';\nimport {\n matrixToSVG,\n parsePreserveAspectRatioAttribute,\n groupSVGElements,\n parseUnit,\n getSvgAttributes,\n} from './svgParsing';\nimport { findScaleToFit, findScaleToCover } from './findScaleTo';\nimport { capValue } from './capValue';\nimport {\n saveObjectTransform,\n resetObjectTransform,\n addTransformToObject,\n applyTransformToObject,\n removeTransformFromObject,\n sizeAfterTransform,\n} from './objectTransforms';\nimport { makeBoundingBoxFromPoints } from './boundingBoxFromPoints';\nimport {\n calcPlaneChangeMatrix,\n sendPointToPlane,\n transformPointRelativeToCanvas,\n sendObjectToPlane,\n} from './planeChange';\nimport { camelize, capitalize, escapeXml, graphemeSplit } from '../lang_string';\nimport {\n getKlass,\n loadImage,\n enlivenObjects,\n enlivenObjectEnlivables,\n} from './objectEnlive';\nimport { pick } from './pick';\nimport {\n joinPath,\n parsePath,\n makePathSimpler,\n getSmoothPathFromPoints,\n getPathSegmentsInfo,\n getBoundsOfCurve,\n getPointOnPath,\n transformPath,\n getRegularPolygonPath,\n} from '../path';\nimport { setStyle } from '../dom_style';\nimport { request } from '../dom_request';\nimport {\n isTouchEvent,\n getPointer,\n removeListener,\n addListener,\n} from '../dom_event';\nimport {\n wrapElement,\n getScrollLeftTop,\n getElementOffset,\n getNodeCanvas,\n cleanUpJsdomNode,\n makeElementUnselectable,\n makeElementSelectable,\n} from '../dom_misc';\nimport { isTransparent } from './isTransparent';\nimport { mergeClipPaths } from './mergeClipPaths';\nimport * as ease from '../anim_ease';\nimport { animateColor } from '../animate_color';\nimport { animate, requestAnimFrame, cancelAnimFrame } from '../animate';\nimport { createClass } from '../lang_class';\n/**\n * @namespace fabric.util\n */\nfabric.util = {\n cos,\n sin,\n rotateVector,\n createVector,\n calcAngleBetweenVectors,\n getHatVector,\n getBisector,\n degreesToRadians,\n radiansToDegrees,\n rotatePoint,\n // probably we should stop exposing this from the interface\n getRandomInt,\n removeFromArray,\n projectStrokeOnPoints,\n // matrix.ts file\n transformPoint,\n invertTransform,\n composeMatrix,\n qrDecompose,\n calcDimensionsMatrix,\n calcRotateMatrix,\n multiplyTransformMatrices,\n // textStyles.ts file\n stylesFromArray,\n stylesToArray,\n hasStyleChanged,\n object: {\n clone,\n extend,\n },\n createCanvasElement,\n createImage,\n copyCanvasElement,\n toDataURL,\n toFixed,\n matrixToSVG,\n parsePreserveAspectRatioAttribute,\n groupSVGElements,\n parseUnit,\n getSvgAttributes,\n findScaleToFit,\n findScaleToCover,\n capValue,\n saveObjectTransform,\n resetObjectTransform,\n addTransformToObject,\n applyTransformToObject,\n removeTransformFromObject,\n makeBoundingBoxFromPoints,\n calcPlaneChangeMatrix,\n sendPointToPlane,\n transformPointRelativeToCanvas,\n sendObjectToPlane,\n string: {\n camelize,\n capitalize,\n escapeXml,\n graphemeSplit,\n },\n getKlass,\n loadImage,\n enlivenObjects,\n enlivenObjectEnlivables,\n pick,\n joinPath,\n parsePath,\n makePathSimpler,\n getSmoothPathFromPoints,\n getPathSegmentsInfo,\n getBoundsOfCurve,\n getPointOnPath,\n transformPath,\n getRegularPolygonPath,\n request,\n setStyle,\n isTouchEvent,\n getPointer,\n removeListener,\n addListener,\n wrapElement,\n getScrollLeftTop,\n getElementOffset,\n getNodeCanvas,\n cleanUpJsdomNode,\n makeElementUnselectable,\n makeElementSelectable,\n isTransparent,\n sizeAfterTransform,\n mergeClipPaths,\n ease,\n animateColor,\n animate,\n requestAnimFrame,\n cancelAnimFrame,\n createClass,\n};\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\nimport { capitalize } from '../util/lang_string';\nimport {\n invertTransform,\n multiplyTransformMatrices,\n qrDecompose,\n} from '../util/misc/matrix';\n\nconst ElementsParser = function (\n elements,\n callback,\n options,\n reviver,\n parsingOptions,\n doc\n) {\n this.elements = elements;\n this.callback = callback;\n this.options = options;\n this.reviver = reviver;\n this.svgUid = (options && options.svgUid) || 0;\n this.parsingOptions = parsingOptions;\n this.regexUrl = /^url\\(['\"]?#([^'\"]+)['\"]?\\)/g;\n this.doc = doc;\n};\n\n(function (proto) {\n proto.parse = function () {\n this.instances = new Array(this.elements.length);\n this.numElements = this.elements.length;\n this.createObjects();\n };\n\n proto.createObjects = function () {\n this.elements.forEach((element, i) => {\n element.setAttribute('svgUid', this.svgUid);\n this.createObject(element, i);\n });\n };\n\n proto.findTag = function (el) {\n return fabric[capitalize(el.tagName.replace('svg:', ''))];\n };\n\n proto.createObject = function (el, index) {\n const klass = this.findTag(el);\n if (klass && klass.fromElement) {\n try {\n klass.fromElement(el, this.createCallback(index, el), this.options);\n } catch (err) {\n console.log(err);\n }\n } else {\n this.checkIfDone();\n }\n };\n\n proto.createCallback = function (index, el) {\n const _this = this;\n return function (obj) {\n let _options;\n _this.resolveGradient(obj, el, 'fill');\n _this.resolveGradient(obj, el, 'stroke');\n if (obj instanceof fabric.Image && obj._originalElement) {\n _options = obj.parsePreserveAspectRatioAttribute(el);\n }\n obj._removeTransformMatrix(_options);\n _this.resolveClipPath(obj, el);\n _this.reviver && _this.reviver(el, obj);\n _this.instances[index] = obj;\n _this.checkIfDone();\n };\n };\n\n proto.extractPropertyDefinition = function (obj, property, storage) {\n const value = obj[property],\n regex = this.regexUrl;\n if (!regex.test(value)) {\n return;\n }\n regex.lastIndex = 0;\n const id = regex.exec(value)[1];\n regex.lastIndex = 0;\n return fabric[storage][this.svgUid][id];\n };\n\n proto.resolveGradient = function (obj, el, property) {\n const gradientDef = this.extractPropertyDefinition(\n obj,\n property,\n 'gradientDefs'\n );\n if (gradientDef) {\n const opacityAttr = el.getAttribute(property + '-opacity');\n const gradient = fabric.Gradient.fromElement(gradientDef, obj, {\n ...this.options,\n opacity: opacityAttr,\n });\n obj.set(property, gradient);\n }\n };\n\n proto.createClipPathCallback = function (obj, container) {\n return function (_newObj) {\n _newObj._removeTransformMatrix();\n _newObj.fillRule = _newObj.clipRule;\n container.push(_newObj);\n };\n };\n\n proto.resolveClipPath = function (obj, usingElement) {\n var clipPath = this.extractPropertyDefinition(obj, 'clipPath', 'clipPaths'),\n element,\n klass,\n objTransformInv,\n container,\n gTransform,\n options;\n if (clipPath) {\n container = [];\n objTransformInv = invertTransform(obj.calcTransformMatrix());\n // move the clipPath tag as sibling to the real element that is using it\n const clipPathTag = clipPath[0].parentNode;\n let clipPathOwner = usingElement;\n while (\n clipPathOwner.parentNode &&\n clipPathOwner.getAttribute('clip-path') !== obj.clipPath\n ) {\n clipPathOwner = clipPathOwner.parentNode;\n }\n clipPathOwner.parentNode.appendChild(clipPathTag);\n for (let i = 0; i < clipPath.length; i++) {\n element = clipPath[i];\n klass = this.findTag(element);\n klass.fromElement(\n element,\n this.createClipPathCallback(obj, container),\n this.options\n );\n }\n if (container.length === 1) {\n clipPath = container[0];\n } else {\n clipPath = new fabric.Group(container);\n }\n gTransform = multiplyTransformMatrices(\n objTransformInv,\n clipPath.calcTransformMatrix()\n );\n if (clipPath.clipPath) {\n this.resolveClipPath(clipPath, clipPathOwner);\n }\n const options = qrDecompose(gTransform);\n clipPath.flipX = false;\n clipPath.flipY = false;\n clipPath.set('scaleX', options.scaleX);\n clipPath.set('scaleY', options.scaleY);\n clipPath.angle = options.angle;\n clipPath.skewX = options.skewX;\n clipPath.skewY = 0;\n clipPath.setPositionByOrigin(\n { x: options.translateX, y: options.translateY },\n 'center',\n 'center'\n );\n obj.clipPath = clipPath;\n } else {\n // if clip-path does not resolve to any element, delete the property.\n delete obj.clipPath;\n }\n };\n\n proto.checkIfDone = function () {\n if (--this.numElements === 0) {\n this.instances = this.instances.filter(function (el) {\n // eslint-disable-next-line no-eq-null, eqeqeq\n return el != null;\n });\n this.callback(this.instances, this.elements);\n }\n };\n})(ElementsParser.prototype);\n\nexport { ElementsParser };\n","//@ts-nocheck\n\n/**\n * Returns CSS rules for a given SVG document\n * @param {SVGDocument} doc SVG document to parse\n * @return {Object} CSS rules of this document\n */\nexport function getCSSRules(doc) {\n let styles = doc.getElementsByTagName('style'),\n i,\n len,\n allRules = {},\n rules;\n\n // very crude parsing of style contents\n for (i = 0, len = styles.length; i < len; i++) {\n let styleContents = styles[i].textContent;\n\n // remove comments\n styleContents = styleContents.replace(/\\/\\*[\\s\\S]*?\\*\\//g, '');\n if (styleContents.trim() === '') {\n continue;\n }\n // recovers all the rule in this form `body { style code... }`\n // rules = styleContents.match(/[^{]*\\{[\\s\\S]*?\\}/g);\n rules = styleContents.split('}');\n // remove empty rules.\n rules = rules.filter(function (rule) {\n return rule.trim();\n });\n // at this point we have hopefully an array of rules `body { style code... `\n // eslint-disable-next-line no-loop-func\n rules.forEach(function (rule) {\n const match = rule.split('{'),\n ruleObj = {},\n declaration = match[1].trim(),\n propertyValuePairs = declaration.split(';').filter(function (pair) {\n return pair.trim();\n });\n\n for (i = 0, len = propertyValuePairs.length; i < len; i++) {\n const pair = propertyValuePairs[i].split(':'),\n property = pair[0].trim(),\n value = pair[1].trim();\n ruleObj[property] = value;\n }\n rule = match[0].trim();\n rule.split(',').forEach(function (_rule) {\n _rule = _rule.replace(/^svg/i, '').trim();\n if (_rule === '') {\n return;\n }\n if (allRules[_rule]) {\n Object.assign(allRules[_rule], ruleObj);\n } else {\n allRules[_rule] = Object.assign({}, ruleObj);\n }\n });\n });\n }\n return allRules;\n}\n","//@ts-nocheck\n\nexport function getMultipleNodes(doc, nodeNames) {\n let nodeName,\n nodeArray = [],\n nodeList,\n i,\n len;\n for (i = 0, len = nodeNames.length; i < len; i++) {\n nodeName = nodeNames[i];\n nodeList = doc.getElementsByTagName(nodeName);\n nodeArray = nodeArray.concat(Array.prototype.slice.call(nodeList));\n }\n return nodeArray;\n}\n","//@ts-nocheck\n\n/**\n * @private\n * to support IE8 missing getElementById on SVGdocument and on node xmlDOM\n */\nexport function elementById(doc, id) {\n let el;\n doc.getElementById && (el = doc.getElementById(id));\n if (el) {\n return el;\n }\n let node,\n i,\n len,\n nodelist = doc.getElementsByTagName('*');\n for (i = 0, len = nodelist.length; i < len; i++) {\n node = nodelist[i];\n if (id === node.getAttribute('id')) {\n return node;\n }\n }\n}\n","//@ts-nocheck\n\nimport { elementById } from './elementById';\n\nconst gradientsAttrs = [\n 'gradientTransform',\n 'x1',\n 'x2',\n 'y1',\n 'y2',\n 'gradientUnits',\n 'cx',\n 'cy',\n 'r',\n 'fx',\n 'fy',\n];\nconst xlinkAttr = 'xlink:href';\n\nexport function recursivelyParseGradientsXlink(doc, gradient) {\n const xLink = gradient.getAttribute(xlinkAttr).slice(1),\n referencedGradient = elementById(doc, xLink);\n if (referencedGradient && referencedGradient.getAttribute(xlinkAttr)) {\n recursivelyParseGradientsXlink(doc, referencedGradient);\n }\n gradientsAttrs.forEach(function (attr) {\n if (\n referencedGradient &&\n !gradient.hasAttribute(attr) &&\n referencedGradient.hasAttribute(attr)\n ) {\n gradient.setAttribute(attr, referencedGradient.getAttribute(attr));\n }\n });\n if (!gradient.children.length) {\n const referenceClone = referencedGradient.cloneNode(true);\n while (referenceClone.firstChild) {\n gradient.appendChild(referenceClone.firstChild);\n }\n }\n gradient.removeAttribute(xlinkAttr);\n}\n","//@ts-nocheck\n\nimport { getMultipleNodes } from './getMultipleNodes';\nimport { recursivelyParseGradientsXlink } from './recursivelyParseGradientsXlink';\n\nconst tagArray = [\n 'linearGradient',\n 'radialGradient',\n 'svg:linearGradient',\n 'svg:radialGradient',\n];\n\n/**\n * Parses an SVG document, returning all of the gradient declarations found in it\n * @param {SVGDocument} doc SVG document to parse\n * @return {Object} Gradient definitions; key corresponds to element id, value -- to gradient definition element\n */\nexport function getGradientDefs(doc) {\n let elList = getMultipleNodes(doc, tagArray),\n el,\n j = 0,\n gradientDefs = {};\n j = elList.length;\n while (j--) {\n el = elList[j];\n if (el.getAttribute('xlink:href')) {\n recursivelyParseGradientsXlink(doc, el);\n }\n gradientDefs[el.getAttribute('id')] = el;\n }\n return gradientDefs;\n}\n","//@ts-nocheck\nimport { svgNS } from './constants';\nimport {\n parsePreserveAspectRatioAttribute,\n parseUnit,\n} from '../util/misc/svgParsing';\nimport { svgViewBoxElementsRegEx, reViewBoxAttrValue } from './constants';\n\n/**\n * Add a element that envelop all child elements and makes the viewbox transformMatrix descend on all elements\n */\n\nexport function applyViewboxTransform(element) {\n if (!svgViewBoxElementsRegEx.test(element.nodeName)) {\n return {};\n }\n let viewBoxAttr = element.getAttribute('viewBox'),\n scaleX = 1,\n scaleY = 1,\n minX = 0,\n minY = 0,\n viewBoxWidth,\n viewBoxHeight,\n matrix,\n el,\n widthAttr = element.getAttribute('width'),\n heightAttr = element.getAttribute('height'),\n x = element.getAttribute('x') || 0,\n y = element.getAttribute('y') || 0,\n preserveAspectRatio = element.getAttribute('preserveAspectRatio') || '',\n missingViewBox =\n !viewBoxAttr || !(viewBoxAttr = viewBoxAttr.match(reViewBoxAttrValue)),\n missingDimAttr =\n !widthAttr ||\n !heightAttr ||\n widthAttr === '100%' ||\n heightAttr === '100%',\n toBeParsed = missingViewBox && missingDimAttr,\n parsedDim = {},\n translateMatrix = '',\n widthDiff = 0,\n heightDiff = 0;\n\n parsedDim.width = 0;\n parsedDim.height = 0;\n parsedDim.toBeParsed = toBeParsed;\n\n if (missingViewBox) {\n if (\n (x || y) &&\n element.parentNode &&\n element.parentNode.nodeName !== '#document'\n ) {\n translateMatrix =\n ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') ';\n matrix = (element.getAttribute('transform') || '') + translateMatrix;\n element.setAttribute('transform', matrix);\n element.removeAttribute('x');\n element.removeAttribute('y');\n }\n }\n\n if (toBeParsed) {\n return parsedDim;\n }\n\n if (missingViewBox) {\n parsedDim.width = parseUnit(widthAttr);\n parsedDim.height = parseUnit(heightAttr);\n // set a transform for elements that have x y and are inner(only) SVGs\n return parsedDim;\n }\n minX = -parseFloat(viewBoxAttr[1]);\n minY = -parseFloat(viewBoxAttr[2]);\n viewBoxWidth = parseFloat(viewBoxAttr[3]);\n viewBoxHeight = parseFloat(viewBoxAttr[4]);\n parsedDim.minX = minX;\n parsedDim.minY = minY;\n parsedDim.viewBoxWidth = viewBoxWidth;\n parsedDim.viewBoxHeight = viewBoxHeight;\n if (!missingDimAttr) {\n parsedDim.width = parseUnit(widthAttr);\n parsedDim.height = parseUnit(heightAttr);\n scaleX = parsedDim.width / viewBoxWidth;\n scaleY = parsedDim.height / viewBoxHeight;\n } else {\n parsedDim.width = viewBoxWidth;\n parsedDim.height = viewBoxHeight;\n }\n\n // default is to preserve aspect ratio\n preserveAspectRatio = parsePreserveAspectRatioAttribute(preserveAspectRatio);\n if (preserveAspectRatio.alignX !== 'none') {\n //translate all container for the effect of Mid, Min, Max\n if (preserveAspectRatio.meetOrSlice === 'meet') {\n scaleY = scaleX = scaleX > scaleY ? scaleY : scaleX;\n // calculate additional translation to move the viewbox\n }\n if (preserveAspectRatio.meetOrSlice === 'slice') {\n scaleY = scaleX = scaleX > scaleY ? scaleX : scaleY;\n // calculate additional translation to move the viewbox\n }\n widthDiff = parsedDim.width - viewBoxWidth * scaleX;\n heightDiff = parsedDim.height - viewBoxHeight * scaleX;\n if (preserveAspectRatio.alignX === 'Mid') {\n widthDiff /= 2;\n }\n if (preserveAspectRatio.alignY === 'Mid') {\n heightDiff /= 2;\n }\n if (preserveAspectRatio.alignX === 'Min') {\n widthDiff = 0;\n }\n if (preserveAspectRatio.alignY === 'Min') {\n heightDiff = 0;\n }\n }\n\n if (\n scaleX === 1 &&\n scaleY === 1 &&\n minX === 0 &&\n minY === 0 &&\n x === 0 &&\n y === 0\n ) {\n return parsedDim;\n }\n if ((x || y) && element.parentNode.nodeName !== '#document') {\n translateMatrix = ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') ';\n }\n\n matrix =\n translateMatrix +\n ' matrix(' +\n scaleX +\n ' 0' +\n ' 0 ' +\n scaleY +\n ' ' +\n (minX * scaleX + widthDiff) +\n ' ' +\n (minY * scaleY + heightDiff) +\n ') ';\n // seems unused.\n // parsedDim.viewboxTransform = parseTransformAttribute(matrix);\n if (element.nodeName === 'svg') {\n el = element.ownerDocument.createElementNS(svgNS, 'g');\n // element.firstChild != null\n while (element.firstChild) {\n el.appendChild(element.firstChild);\n }\n element.appendChild(el);\n } else {\n el = element;\n el.removeAttribute('x');\n el.removeAttribute('y');\n matrix = el.getAttribute('transform') + matrix;\n }\n el.setAttribute('transform', matrix);\n return parsedDim;\n}\n","//@ts-nocheck\n\nexport function hasAncestorWithNodeName(element, nodeName) {\n while (element && (element = element.parentNode)) {\n if (\n element.nodeName &&\n nodeName.test(element.nodeName.replace('svg:', '')) &&\n !element.getAttribute('instantiated_by_use')\n ) {\n return true;\n }\n }\n return false;\n}\n","//@ts-nocheck\n\nimport { ElementsParser } from './elements_parser';\n\n/**\n * Transforms an array of svg elements to corresponding fabric.* instances\n * @static\n * @memberOf fabric\n * @param {Array} elements Array of elements to parse\n * @param {Function} callback Being passed an array of fabric instances (transformed from SVG elements)\n * @param {Object} [options] Options object\n * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.\n */\nexport function parseElements(\n elements,\n callback,\n options,\n reviver,\n parsingOptions\n) {\n new ElementsParser(\n elements,\n callback,\n options,\n reviver,\n parsingOptions\n ).parse();\n}\n","//@ts-nocheck\nimport { svgNS } from './constants';\nimport { elementById } from './elementById';\nimport { getMultipleNodes } from './getMultipleNodes';\nimport { applyViewboxTransform } from './applyViewboxTransform';\n\nexport function parseUseDirectives(doc) {\n let nodelist = getMultipleNodes(doc, ['use', 'svg:use']),\n i = 0;\n while (nodelist.length && i < nodelist.length) {\n const el = nodelist[i],\n xlinkAttribute = el.getAttribute('xlink:href') || el.getAttribute('href');\n\n if (xlinkAttribute === null) {\n return;\n }\n\n var xlink = xlinkAttribute.slice(1),\n x = el.getAttribute('x') || 0,\n y = el.getAttribute('y') || 0,\n el2 = elementById(doc, xlink).cloneNode(true),\n currentTrans =\n (el2.getAttribute('transform') || '') +\n ' translate(' +\n x +\n ', ' +\n y +\n ')',\n parentNode,\n oldLength = nodelist.length,\n attr,\n j,\n attrs,\n len,\n namespace = svgNS;\n\n applyViewboxTransform(el2);\n if (/^svg$/i.test(el2.nodeName)) {\n const el3 = el2.ownerDocument.createElementNS(namespace, 'g');\n for (j = 0, attrs = el2.attributes, len = attrs.length; j < len; j++) {\n attr = attrs.item(j);\n el3.setAttributeNS(namespace, attr.nodeName, attr.nodeValue);\n }\n // el2.firstChild != null\n while (el2.firstChild) {\n el3.appendChild(el2.firstChild);\n }\n el2 = el3;\n }\n\n for (j = 0, attrs = el.attributes, len = attrs.length; j < len; j++) {\n attr = attrs.item(j);\n if (\n attr.nodeName === 'x' ||\n attr.nodeName === 'y' ||\n attr.nodeName === 'xlink:href' ||\n attr.nodeName === 'href'\n ) {\n continue;\n }\n\n if (attr.nodeName === 'transform') {\n currentTrans = attr.nodeValue + ' ' + currentTrans;\n } else {\n el2.setAttribute(attr.nodeName, attr.nodeValue);\n }\n }\n\n el2.setAttribute('transform', currentTrans);\n el2.setAttribute('instantiated_by_use', '1');\n el2.removeAttribute('id');\n parentNode = el.parentNode;\n parentNode.replaceChild(el2, el);\n // some browsers do not shorten nodelist after replaceChild (IE8)\n if (nodelist.length === oldLength) {\n i++;\n }\n }\n}\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\nimport { applyViewboxTransform } from './applyViewboxTransform';\nimport {\n clipPaths,\n cssRules,\n gradientDefs,\n svgInvalidAncestorsRegEx,\n svgValidTagNamesRegEx,\n} from './constants';\nimport { getCSSRules } from './getCSSRules';\nimport { getGradientDefs } from './getGradientDefs';\nimport { hasAncestorWithNodeName } from './hasAncestorWithNodeName';\nimport { parseElements } from './parseElements';\nimport { parseUseDirectives } from './parseUseDirectives';\n\n/**\n * Parses an SVG document, converts it to an array of corresponding fabric.* instances and passes them to a callback\n * @static\n * @function\n * @memberOf fabric\n * @param {SVGDocument} doc SVG document to parse\n * @param {Function} callback Callback to call when parsing is finished;\n * It's being passed an array of elements (parsed from a document).\n * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.\n * @param {Object} [parsingOptions] options for parsing document\n * @param {String} [parsingOptions.crossOrigin] crossOrigin settings\n * @param {AbortSignal} [parsingOptions.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n */\nexport function parseSVGDocument(doc, callback, reviver, parsingOptions) {\n if (!doc) {\n return;\n }\n if (\n parsingOptions &&\n parsingOptions.signal &&\n parsingOptions.signal.aborted\n ) {\n throw new Error('`options.signal` is in `aborted` state');\n }\n parseUseDirectives(doc);\n\n let svgUid = fabric.Object.__uid++,\n i,\n len,\n options = applyViewboxTransform(doc),\n descendants = Array.from(doc.getElementsByTagName('*'));\n options.crossOrigin = parsingOptions && parsingOptions.crossOrigin;\n options.svgUid = svgUid;\n options.signal = parsingOptions && parsingOptions.signal;\n\n if (descendants.length === 0 && isLikelyNode) {\n // we're likely in node, where \"o3-xml\" library fails to gEBTN(\"*\")\n // https://github.com/ajaxorg/node-o3-xml/issues/21\n descendants = doc.selectNodes('//*[name(.)!=\"svg\"]');\n const arr = [];\n for (i = 0, len = descendants.length; i < len; i++) {\n arr[i] = descendants[i];\n }\n descendants = arr;\n }\n\n const elements = descendants.filter(function (el) {\n applyViewboxTransform(el);\n return (\n svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')) &&\n !hasAncestorWithNodeName(el, svgInvalidAncestorsRegEx)\n ); // http://www.w3.org/TR/SVG/struct.html#DefsElement\n });\n if (!elements || (elements && !elements.length)) {\n callback && callback([], {});\n return;\n }\n const localClipPaths = {};\n descendants\n .filter(function (el) {\n return el.nodeName.replace('svg:', '') === 'clipPath';\n })\n .forEach(function (el) {\n const id = el.getAttribute('id');\n localClipPaths[id] = Array.from(el.getElementsByTagName('*')).filter(\n function (el) {\n return svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', ''));\n }\n );\n });\n gradientDefs[svgUid] = getGradientDefs(doc);\n cssRules[svgUid] = getCSSRules(doc);\n clipPaths[svgUid] = localClipPaths;\n // Precedence of rules: style > class > attribute\n parseElements(\n elements,\n function (instances, elements) {\n if (callback) {\n callback(instances, options, elements, descendants);\n delete gradientDefs[svgUid];\n delete cssRules[svgUid];\n delete clipPaths[svgUid];\n }\n },\n Object.assign({}, options),\n reviver,\n parsingOptions\n );\n}\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { parseSVGDocument } from './parseSVGDocument';\n\n/**\n * Takes string corresponding to an SVG document, and parses it into a set of fabric objects\n * @memberOf fabric\n * @param {String} string\n * @param {Function} callback\n * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.\n * @param {Object} [options] Object containing options for parsing\n * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n */\nexport function loadSVGFromString(string, callback, reviver, options) {\n const parser = new fabric.window.DOMParser(),\n doc = parser.parseFromString(string.trim(), 'text/xml');\n parseSVGDocument(\n doc.documentElement,\n function (results, _options, elements, allElements) {\n callback(results, _options, elements, allElements);\n },\n reviver,\n options\n );\n}\n","//@ts-nocheck\n\nimport { request } from '../util/dom_request';\nimport { parseSVGDocument } from './parseSVGDocument';\n\n/**\n * Takes url corresponding to an SVG document, and parses it into a set of fabric objects.\n * Note that SVG is fetched via XMLHttpRequest, so it needs to conform to SOP (Same Origin Policy)\n * @memberOf fabric\n * @param {String} url\n * @param {Function} callback\n * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.\n * @param {Object} [options] Object containing options for parsing\n * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n */\nexport function loadSVGFromURL(url, callback, reviver, options) {\n new request(url.replace(/^\\n\\s*/, '').trim(), {\n method: 'get',\n onComplete: onComplete,\n signal: options && options.signal,\n });\n\n function onComplete(r) {\n const xml = r.responseXML;\n if (!xml || !xml.documentElement) {\n callback && callback(null);\n return false;\n }\n\n parseSVGDocument(\n xml.documentElement,\n function (results, _options, elements, allElements) {\n callback && callback(results, _options, elements, allElements);\n },\n reviver,\n options\n );\n }\n}\n","//@ts-nocheck\n\nexport function selectorMatches(element, selector) {\n let nodeName = element.nodeName,\n classNames = element.getAttribute('class'),\n id = element.getAttribute('id'),\n matcher,\n i;\n // i check if a selector matches slicing away part from it.\n // if i get empty string i should match\n matcher = new RegExp('^' + nodeName, 'i');\n selector = selector.replace(matcher, '');\n if (id && selector.length) {\n matcher = new RegExp('#' + id + '(?![a-zA-Z\\\\-]+)', 'i');\n selector = selector.replace(matcher, '');\n }\n if (classNames && selector.length) {\n classNames = classNames.split(' ');\n for (i = classNames.length; i--; ) {\n matcher = new RegExp('\\\\.' + classNames[i] + '(?![a-zA-Z\\\\-]+)', 'i');\n selector = selector.replace(matcher, '');\n }\n }\n return selector.length === 0;\n}\n","//@ts-nocheck\nimport { selectorMatches } from './selectorMatches';\n\nexport function doesSomeParentMatch(element, selectors) {\n let selector,\n parentMatching = true;\n while (\n element.parentNode &&\n element.parentNode.nodeType === 1 &&\n selectors.length\n ) {\n if (parentMatching) {\n selector = selectors.pop();\n }\n element = element.parentNode;\n parentMatching = selectorMatches(element, selector);\n }\n return selectors.length === 0;\n}\n","//@ts-nocheck\n\nimport { selectorMatches } from './selectorMatches';\nimport { doesSomeParentMatch } from './doesSomeParentMatch';\n\n/**\n * @private\n */\n\nexport function elementMatchesRule(element, selectors) {\n let firstMatching,\n parentMatching = true;\n //start from rightmost selector.\n firstMatching = selectorMatches(element, selectors.pop());\n if (firstMatching && selectors.length) {\n parentMatching = doesSomeParentMatch(element, selectors);\n }\n return firstMatching && parentMatching && selectors.length === 0;\n}\n","//@ts-nocheck\nimport { cssRules } from './constants';\nimport { elementMatchesRule } from './elementMatchesRule';\n\n/**\n * @private\n */\n\nexport function getGlobalStylesForElement(element, svgUid) {\n const styles = {};\n for (const rule in cssRules[svgUid]) {\n if (elementMatchesRule(element, rule.split(' '))) {\n for (const property in cssRules[svgUid][rule]) {\n styles[property] = cssRules[svgUid][rule][property];\n }\n }\n }\n return styles;\n}\n","//@ts-nocheck\nimport { attributesMap } from './constants';\n\nexport function normalizeAttr(attr) {\n // transform attribute names\n if (attr in attributesMap) {\n return attributesMap[attr];\n }\n return attr;\n}\n","//@ts-nocheck\nimport { cos } from '../util/misc/cos';\nimport { sin } from '../util/misc/sin';\n\nexport function rotateMatrix(matrix, args) {\n const cosValue = cos(args[0]),\n sinValue = sin(args[0]);\n let x = 0,\n y = 0;\n if (args.length === 3) {\n x = args[1];\n y = args[2];\n }\n\n matrix[0] = cosValue;\n matrix[1] = sinValue;\n matrix[2] = -sinValue;\n matrix[3] = cosValue;\n matrix[4] = x - (cosValue * x - sinValue * y);\n matrix[5] = y - (sinValue * x + cosValue * y);\n}\n","//@ts-nocheck\n\nexport function scaleMatrix(matrix, args) {\n const multiplierX = args[0],\n multiplierY = args.length === 2 ? args[1] : args[0];\n\n matrix[0] = multiplierX;\n matrix[3] = multiplierY;\n}\n","//@ts-nocheck\nimport { degreesToRadians } from '../util/misc/radiansDegreesConversion';\n\nexport function skewMatrix(matrix, args, pos) {\n matrix[pos] = Math.tan(degreesToRadians(args[0]));\n}\n","//@ts-nocheck\n\nexport function translateMatrix(matrix, args) {\n matrix[4] = args[0];\n if (args.length === 2) {\n matrix[5] = args[1];\n }\n}\n","//@ts-nocheck\nimport { iMatrix } from '../constants';\nimport { commaWsp, reNum } from './constants';\nimport { multiplyTransformMatrices } from '../util/misc/matrix';\nimport { degreesToRadians } from '../util/misc/radiansDegreesConversion';\nimport { rotateMatrix } from './rotateMatrix';\nimport { scaleMatrix } from './scaleMatrix';\nimport { skewMatrix } from './skewMatrix';\nimport { translateMatrix } from './translateMatrix';\n\n// == begin transform regexp\nconst number = reNum,\n skewX = '(?:(skewX)\\\\s*\\\\(\\\\s*(' + number + ')\\\\s*\\\\))',\n skewY = '(?:(skewY)\\\\s*\\\\(\\\\s*(' + number + ')\\\\s*\\\\))',\n rotate =\n '(?:(rotate)\\\\s*\\\\(\\\\s*(' +\n number +\n ')(?:' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n '))?\\\\s*\\\\))',\n scale =\n '(?:(scale)\\\\s*\\\\(\\\\s*(' +\n number +\n ')(?:' +\n commaWsp +\n '(' +\n number +\n '))?\\\\s*\\\\))',\n translate =\n '(?:(translate)\\\\s*\\\\(\\\\s*(' +\n number +\n ')(?:' +\n commaWsp +\n '(' +\n number +\n '))?\\\\s*\\\\))',\n matrix =\n '(?:(matrix)\\\\s*\\\\(\\\\s*' +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n '\\\\s*\\\\))',\n transform =\n '(?:' +\n matrix +\n '|' +\n translate +\n '|' +\n scale +\n '|' +\n rotate +\n '|' +\n skewX +\n '|' +\n skewY +\n ')',\n transforms =\n '(?:' + transform + '(?:' + commaWsp + '*' + transform + ')*' + ')',\n transformList = '^\\\\s*(?:' + transforms + '?)\\\\s*$',\n // http://www.w3.org/TR/SVG/coords.html#TransformAttribute\n reTransformList = new RegExp(transformList),\n // == end transform regexp\n reTransform = new RegExp(transform, 'g');\n\n/**\n * Parses \"transform\" attribute, returning an array of values\n * @static\n * @function\n * @memberOf fabric\n * @param {String} attributeValue String containing attribute value\n * @return {Array} Array of 6 elements representing transformation matrix\n */\nexport function parseTransformAttribute(attributeValue) {\n // start with identity matrix\n let matrix = iMatrix.concat(),\n matrices = [];\n\n // return if no argument was given or\n // an argument does not match transform attribute regexp\n if (\n !attributeValue ||\n (attributeValue && !reTransformList.test(attributeValue))\n ) {\n return matrix;\n }\n\n attributeValue.replace(reTransform, function (match) {\n const m = new RegExp(transform).exec(match).filter(function (match) {\n // match !== '' && match != null\n return !!match;\n }),\n operation = m[1],\n args = m.slice(2).map(parseFloat);\n\n switch (operation) {\n case 'translate':\n translateMatrix(matrix, args);\n break;\n case 'rotate':\n args[0] = degreesToRadians(args[0]);\n rotateMatrix(matrix, args);\n break;\n case 'scale':\n scaleMatrix(matrix, args);\n break;\n case 'skewX':\n skewMatrix(matrix, args, 2);\n break;\n case 'skewY':\n skewMatrix(matrix, args, 1);\n break;\n case 'matrix':\n matrix = args;\n break;\n }\n\n // snapshot current matrix into matrices array\n matrices.push(matrix.concat());\n // reset\n matrix = iMatrix.concat();\n });\n\n let combinedMatrix = matrices[0];\n while (matrices.length > 1) {\n matrices.shift();\n combinedMatrix = multiplyTransformMatrices(combinedMatrix, matrices[0]);\n }\n return combinedMatrix;\n}\n","//@ts-nocheck\nimport { multiplyTransformMatrices } from '../util/misc/matrix';\nimport { parseUnit } from '../util/misc/svgParsing';\nimport { parseTransformAttribute } from './parseTransformAttribute';\n\nexport function normalizeValue(attr, value, parentAttributes, fontSize) {\n let isArray = Array.isArray(value),\n parsed;\n\n if ((attr === 'fill' || attr === 'stroke') && value === 'none') {\n value = '';\n } else if (attr === 'strokeUniform') {\n return value === 'non-scaling-stroke';\n } else if (attr === 'strokeDashArray') {\n if (value === 'none') {\n value = null;\n } else {\n value = value.replace(/,/g, ' ').split(/\\s+/).map(parseFloat);\n }\n } else if (attr === 'transformMatrix') {\n if (parentAttributes && parentAttributes.transformMatrix) {\n value = multiplyTransformMatrices(\n parentAttributes.transformMatrix,\n parseTransformAttribute(value)\n );\n } else {\n value = parseTransformAttribute(value);\n }\n } else if (attr === 'visible') {\n value = value !== 'none' && value !== 'hidden';\n // display=none on parent element always takes precedence over child element\n if (parentAttributes && parentAttributes.visible === false) {\n value = false;\n }\n } else if (attr === 'opacity') {\n value = parseFloat(value);\n if (parentAttributes && typeof parentAttributes.opacity !== 'undefined') {\n value *= parentAttributes.opacity;\n }\n } else if (attr === 'textAnchor' /* text-anchor */) {\n value = value === 'start' ? 'left' : value === 'end' ? 'right' : 'center';\n } else if (attr === 'charSpacing') {\n // parseUnit returns px and we convert it to em\n parsed = (parseUnit(value, fontSize) / fontSize) * 1000;\n } else if (attr === 'paintFirst') {\n const fillIndex = value.indexOf('fill');\n const strokeIndex = value.indexOf('stroke');\n var value = 'fill';\n if (fillIndex > -1 && strokeIndex > -1 && strokeIndex < fillIndex) {\n value = 'stroke';\n } else if (fillIndex === -1 && strokeIndex > -1) {\n value = 'stroke';\n }\n } else if (attr === 'href' || attr === 'xlink:href' || attr === 'font') {\n return value;\n } else if (attr === 'imageSmoothing') {\n return value === 'optimizeQuality';\n } else {\n parsed = isArray ? value.map(parseUnit) : parseUnit(value, fontSize);\n }\n\n return !isArray && isNaN(parsed) ? value : parsed;\n}\n","//@ts-nocheck\nimport { parseUnit } from '../util/misc/svgParsing';\nimport { reFontDeclaration } from './constants';\n\n/**\n * Parses a short font declaration, building adding its properties to a style object\n * @static\n * @function\n * @memberOf fabric\n * @param {String} value font declaration\n * @param {Object} oStyle definition\n */\nexport function parseFontDeclaration(value, oStyle) {\n const match = value.match(reFontDeclaration);\n\n if (!match) {\n return;\n }\n const fontStyle = match[1],\n // font variant is not used\n // fontVariant = match[2],\n fontWeight = match[3],\n fontSize = match[4],\n lineHeight = match[5],\n fontFamily = match[6];\n\n if (fontStyle) {\n oStyle.fontStyle = fontStyle;\n }\n if (fontWeight) {\n oStyle.fontWeight = isNaN(parseFloat(fontWeight))\n ? fontWeight\n : parseFloat(fontWeight);\n }\n if (fontSize) {\n oStyle.fontSize = parseUnit(fontSize);\n }\n if (fontFamily) {\n oStyle.fontFamily = fontFamily;\n }\n if (lineHeight) {\n oStyle.lineHeight = lineHeight === 'normal' ? 1 : lineHeight;\n }\n}\n","//@ts-nocheck\n\nexport function parseStyleObject(style, oStyle) {\n let attr, value;\n for (const prop in style) {\n if (typeof style[prop] === 'undefined') {\n continue;\n }\n\n attr = prop.toLowerCase();\n value = style[prop];\n\n oStyle[attr] = value;\n }\n}\n","//@ts-nocheck\n\nexport function parseStyleString(style, oStyle) {\n let attr, value;\n style\n .replace(/;\\s*$/, '')\n .split(';')\n .forEach(function (chunk) {\n const pair = chunk.split(':');\n\n attr = pair[0].trim().toLowerCase();\n value = pair[1].trim();\n\n oStyle[attr] = value;\n });\n}\n","//@ts-nocheck\nimport { parseStyleObject } from './parseStyleObject';\nimport { parseStyleString } from './parseStyleString';\n\n/**\n * Parses \"style\" attribute, retuning an object with values\n * @static\n * @memberOf fabric\n * @param {SVGElement} element Element to parse\n * @return {Object} Objects with values parsed from style attribute of an element\n */\nexport function parseStyleAttribute(element) {\n const oStyle = {},\n style = element.getAttribute('style');\n\n if (!style) {\n return oStyle;\n }\n\n if (typeof style === 'string') {\n parseStyleString(style, oStyle);\n } else {\n parseStyleObject(style, oStyle);\n }\n\n return oStyle;\n}\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { Color } from '../color';\nimport { toFixed } from '../util/misc/toFixed';\nimport { colorAttributes } from './constants';\n\n/**\n * @private\n * @param {Object} attributes Array of attributes to parse\n */\n\nexport function setStrokeFillOpacity(attributes) {\n for (const attr in colorAttributes) {\n if (\n typeof attributes[colorAttributes[attr]] === 'undefined' ||\n attributes[attr] === ''\n ) {\n continue;\n }\n\n if (typeof attributes[attr] === 'undefined') {\n if (!fabric.Object.prototype[attr]) {\n continue;\n }\n attributes[attr] = fabric.Object.prototype[attr];\n }\n\n if (attributes[attr].indexOf('url(') === 0) {\n continue;\n }\n\n const color = new Color(attributes[attr]);\n attributes[attr] = color\n .setAlpha(\n toFixed(color.getAlpha() * attributes[colorAttributes[attr]], 2)\n )\n .toRgba();\n }\n return attributes;\n}\n","//@ts-nocheck\nimport { DEFAULT_SVG_FONT_SIZE } from '../constants';\nimport { parseUnit } from '../util/misc/svgParsing';\nimport { cPath, fSize, svgValidParentsRegEx } from './constants';\nimport { getGlobalStylesForElement } from './getGlobalStylesForElement';\nimport { normalizeAttr } from './normalizeAttr';\nimport { normalizeValue } from './normalizeValue';\nimport { parseFontDeclaration } from './parseFontDeclaration';\nimport { parseStyleAttribute } from './parseStyleAttribute';\nimport { setStrokeFillOpacity } from './setStrokeFillOpacity';\n\n/**\n * Returns an object of attributes' name/value, given element and an array of attribute names;\n * Parses parent \"g\" nodes recursively upwards.\n * @param {DOMElement} element Element to parse\n * @param {Array} attributes Array of attributes to parse\n * @return {Object} object containing parsed attributes' names/values\n */\nexport function parseAttributes(element, attributes, svgUid) {\n if (!element) {\n return;\n }\n\n let value,\n parentAttributes = {},\n fontSize,\n parentFontSize;\n\n if (typeof svgUid === 'undefined') {\n svgUid = element.getAttribute('svgUid');\n }\n // if there's a parent container (`g` or `a` or `symbol` node), parse its attributes recursively upwards\n if (\n element.parentNode &&\n svgValidParentsRegEx.test(element.parentNode.nodeName)\n ) {\n parentAttributes = parseAttributes(element.parentNode, attributes, svgUid);\n }\n\n let ownAttributes = attributes.reduce(function (memo, attr) {\n value = element.getAttribute(attr);\n if (value) {\n // eslint-disable-line\n memo[attr] = value;\n }\n return memo;\n }, {});\n // add values parsed from style, which take precedence over attributes\n // (see: http://www.w3.org/TR/SVG/styling.html#UsingPresentationAttributes)\n const cssAttrs = Object.assign(\n getGlobalStylesForElement(element, svgUid),\n parseStyleAttribute(element)\n );\n ownAttributes = Object.assign(ownAttributes, cssAttrs);\n if (cssAttrs[cPath]) {\n element.setAttribute(cPath, cssAttrs[cPath]);\n }\n fontSize = parentFontSize =\n parentAttributes.fontSize || DEFAULT_SVG_FONT_SIZE;\n if (ownAttributes[fSize]) {\n // looks like the minimum should be 9px when dealing with ems. this is what looks like in browsers.\n ownAttributes[fSize] = fontSize = parseUnit(\n ownAttributes[fSize],\n parentFontSize\n );\n }\n\n let normalizedAttr,\n normalizedValue,\n normalizedStyle = {};\n for (const attr in ownAttributes) {\n normalizedAttr = normalizeAttr(attr);\n normalizedValue = normalizeValue(\n normalizedAttr,\n ownAttributes[attr],\n parentAttributes,\n fontSize\n );\n normalizedStyle[normalizedAttr] = normalizedValue;\n }\n if (normalizedStyle && normalizedStyle.font) {\n parseFontDeclaration(normalizedStyle.font, normalizedStyle);\n }\n const mergedAttrs = Object.assign(parentAttributes, normalizedStyle);\n return svgValidParentsRegEx.test(element.nodeName)\n ? mergedAttrs\n : setStrokeFillOpacity(mergedAttrs);\n}\n","//@ts-nocheck\n\n/**\n * Parses \"points\" attribute, returning an array of values\n * @static\n * @memberOf fabric\n * @param {String} points points attribute string\n * @return {Array} array of points\n */\nexport function parsePointsAttribute(points) {\n // points attribute is required and must not be empty\n if (!points) {\n return null;\n }\n\n // replace commas with whitespace and remove bookending whitespace\n points = points.replace(/,/g, ' ').trim();\n\n points = points.split(/\\s+/);\n let parsedPoints = [],\n i,\n len;\n\n for (i = 0, len = points.length; i < len; i += 2) {\n parsedPoints.push({\n x: parseFloat(points[i]),\n y: parseFloat(points[i + 1]),\n });\n }\n\n // odd number of points is an error\n // if (parsedPoints.length % 2 !== 0) {\n // return null;\n // }\n return parsedPoints;\n}\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { clipPaths, cssRules, gradientDefs } from './constants';\nimport { ElementsParser } from './elements_parser';\nimport { getCSSRules } from './getCSSRules';\nimport { getGradientDefs } from './getGradientDefs';\nimport { loadSVGFromString } from './loadSVGFromString';\nimport { loadSVGFromURL } from './loadSVGFromURL';\nimport { parseAttributes } from './parseAttributes';\nimport { parseElements } from './parseElements';\nimport { parseFontDeclaration } from './parseFontDeclaration';\nimport { parsePointsAttribute } from './parsePointsAttribute';\nimport { parseStyleAttribute } from './parseStyleAttribute';\nimport { parseSVGDocument } from './parseSVGDocument';\nimport { parseTransformAttribute } from './parseTransformAttribute';\n\nObject.assign(fabric, {\n cssRules,\n gradientDefs,\n clipPaths,\n parseTransformAttribute,\n parseSVGDocument,\n parseFontDeclaration,\n getGradientDefs,\n parseAttributes,\n parseElements,\n parseStyleAttribute,\n parsePointsAttribute,\n getCSSRules,\n loadSVGFromURL,\n loadSVGFromString,\n ElementsParser,\n});\n","//@ts-nocheck\nimport { Point } from './point.class';\nimport { fabric } from '../HEADER';\n\n/* Adaptation of work of Kevin Lindsey (kevin@kevlindev.com) */\n\ntype IntersectionType = 'Intersection' | 'Coincident' | 'Parallel';\n\n/**\n * **Assuming `T`, `A`, `B` are points on the same line**,\n * check if `T` is contained in `[A, B]` by comparing the direction of the vectors from `T` to `A` and `B`\n * @param T\n * @param A\n * @param B\n * @returns true if `T` is contained\n */\nconst isContainedInInterval = (T: Point, A: Point, B: Point) => {\n const TA = new Point(T).subtract(A);\n const TB = new Point(T).subtract(B);\n return (\n Math.sign(TA.x) !== Math.sign(TB.x) || Math.sign(TA.y) !== Math.sign(TB.y)\n );\n};\n\nexport class Intersection {\n points: Point[];\n\n status?: IntersectionType;\n\n constructor(status?: IntersectionType) {\n this.status = status;\n this.points = [];\n }\n\n /**\n *\n * @param {Point} point\n * @returns\n */\n contains(point) {\n return this.points.some((p) => p.eq(point));\n }\n\n /**\n * Appends points of intersection\n * @param {...Point[]} points\n * @return {Intersection} thisArg\n * @chainable\n */\n private append(...points) {\n this.points = this.points.concat(\n points.filter((point) => {\n return !this.contains(point);\n })\n );\n return this;\n }\n\n /**\n * Checks if a line intersects another\n * @static\n * @param {Point} a1\n * @param {Point} a2\n * @param {Point} b1\n * @param {Point} b2\n * @param {boolean} [aInfinite=true] check segment intersection by passing `false`\n * @param {boolean} [bInfinite=true] check segment intersection by passing `false`\n * @return {Intersection}\n */\n static intersectLineLine(a1, a2, b1, b2, aInfinite = true, bInfinite = true) {\n let result;\n const uaT = (b2.x - b1.x) * (a1.y - b1.y) - (b2.y - b1.y) * (a1.x - b1.x),\n ubT = (a2.x - a1.x) * (a1.y - b1.y) - (a2.y - a1.y) * (a1.x - b1.x),\n uB = (b2.y - b1.y) * (a2.x - a1.x) - (b2.x - b1.x) * (a2.y - a1.y);\n if (uB !== 0) {\n const ua = uaT / uB,\n ub = ubT / uB;\n if (\n (aInfinite || (0 <= ua && ua <= 1)) &&\n (bInfinite || (0 <= ub && ub <= 1))\n ) {\n result = new Intersection('Intersection');\n result.append(\n new Point(a1.x + ua * (a2.x - a1.x), a1.y + ua * (a2.y - a1.y))\n );\n } else {\n result = new Intersection();\n }\n } else {\n if (uaT === 0 || ubT === 0) {\n const segmentsCoincide =\n aInfinite ||\n bInfinite ||\n isContainedInInterval(a1, b1, b2) ||\n isContainedInInterval(a2, b1, b2) ||\n isContainedInInterval(b1, a1, a2) ||\n isContainedInInterval(b2, a1, a2);\n result = new Intersection(segmentsCoincide ? 'Coincident' : undefined);\n } else {\n result = new Intersection('Parallel');\n }\n }\n return result;\n }\n\n /**\n * Checks if a segment intersects a line\n * @see {@link intersectLineLine} for line intersection\n * @static\n * @param {Point} s1 boundary point of segment\n * @param {Point} s2 other boundary point of segment\n * @param {Point} l1 point on line\n * @param {Point} l2 other point on line\n * @return {Intersection}\n */\n static intersectSegmentLine(s1, s2, l1, l2) {\n return Intersection.intersectLineLine(s1, s2, l1, l2, false, true);\n }\n\n /**\n * Checks if a segment intersects another\n * @see {@link intersectLineLine} for line intersection\n * @static\n * @param {Point} a1 boundary point of segment\n * @param {Point} a2 other boundary point of segment\n * @param {Point} b1 boundary point of segment\n * @param {Point} b2 other boundary point of segment\n * @return {Intersection}\n */\n static intersectSegmentSegment(a1, a2, b1, b2) {\n return Intersection.intersectLineLine(a1, a2, b1, b2, false, false);\n }\n\n /**\n * Checks if line intersects polygon\n *\n * @todo account for stroke\n *\n * @static\n * @see {@link intersectSegmentPolygon} for segment intersection\n * @param {Point} a1 point on line\n * @param {Point} a2 other point on line\n * @param {Point[]} points polygon points\n * @param {boolean} [infinite=true] check segment intersection by passing `false`\n * @return {Intersection}\n */\n static intersectLinePolygon(a1, a2, points, infinite = true) {\n const result = new Intersection();\n const length = points.length;\n\n for (let i = 0, b1, b2, inter; i < length; i++) {\n b1 = points[i];\n b2 = points[(i + 1) % length];\n inter = Intersection.intersectLineLine(a1, a2, b1, b2, infinite, false);\n if (inter.status === 'Coincident') {\n return inter;\n }\n result.append(...inter.points);\n }\n\n if (result.points.length > 0) {\n result.status = 'Intersection';\n }\n\n return result;\n }\n\n /**\n * Checks if segment intersects polygon\n * @static\n * @see {@link intersectLinePolygon} for line intersection\n * @param {Point} a1 boundary point of segment\n * @param {Point} a2 other boundary point of segment\n * @param {Point[]} points polygon points\n * @return {Intersection}\n */\n static intersectSegmentPolygon(a1, a2, points) {\n return Intersection.intersectLinePolygon(a1, a2, points, false);\n }\n\n /**\n * Checks if polygon intersects another polygon\n *\n * @todo account for stroke\n *\n * @static\n * @param {Point[]} points1\n * @param {Point[]} points2\n * @return {Intersection}\n */\n static intersectPolygonPolygon(points1, points2) {\n const result = new Intersection(),\n length = points1.length;\n const coincidences = [];\n\n for (let i = 0; i < length; i++) {\n const a1 = points1[i],\n a2 = points1[(i + 1) % length],\n inter = Intersection.intersectSegmentPolygon(a1, a2, points2);\n if (inter.status === 'Coincident') {\n coincidences.push(inter);\n result.append(a1, a2);\n } else {\n result.append(...inter.points);\n }\n }\n\n if (coincidences.length > 0 && coincidences.length === points1.length) {\n return new Intersection('Coincident');\n } else if (result.points.length > 0) {\n result.status = 'Intersection';\n }\n\n return result;\n }\n\n /**\n * Checks if polygon intersects rectangle\n * @static\n * @see {@link intersectPolygonPolygon} for polygon intersection\n * @param {Point[]} points polygon points\n * @param {Point} r1 top left point of rect\n * @param {Point} r2 bottom right point of rect\n * @return {Intersection}\n */\n static intersectPolygonRectangle(points, r1, r2) {\n const min = r1.min(r2),\n max = r1.max(r2),\n topRight = new Point(max.x, min.y),\n bottomLeft = new Point(min.x, max.y);\n\n return Intersection.intersectPolygonPolygon(points, [\n min,\n topRight,\n max,\n bottomLeft,\n ]);\n }\n}\n\nfabric.Intersection = Intersection;\n","export const linearDefaultCoords = {\n x1: 0,\n y1: 0,\n x2: 0,\n y2: 0,\n};\n\nexport const radialDefaultCoords = {\n ...linearDefaultCoords,\n r1: 0,\n r2: 0,\n};\n","import { GradientType, GradientUnits } from '../typedefs';\n\nexport function parseType(el: SVGGradientElement): GradientType {\n return el.nodeName === 'linearGradient' || el.nodeName === 'LINEARGRADIENT'\n ? 'linear'\n : 'radial';\n}\n\nexport function parseGradientUnits(el: SVGGradientElement): GradientUnits {\n return el.getAttribute('gradientUnits') === 'userSpaceOnUse'\n ? 'pixels'\n : 'percentage';\n}\n","import { ifNaN } from '../util/internals';\nimport { capValue } from '../util/misc/capValue';\n\nconst RE_PERCENT = /^(\\d+\\.\\d+)%|(\\d+)%$/;\n\nexport function isPercent(value: string | null) {\n return value && RE_PERCENT.test(value);\n}\n\n/**\n *\n * @param value\n * @param valueIfNaN\n * @returns ∈ [0, 1]\n */\nexport function parsePercent(\n value: string | number | null | undefined,\n valueIfNaN?: number\n) {\n const parsed =\n typeof value === 'number'\n ? value\n : typeof value === 'string'\n ? parseFloat(value) / (isPercent(value) ? 100 : 1)\n : NaN;\n return capValue(0, ifNaN(parsed, valueIfNaN), 1);\n}\n","import { Color } from '../../color';\nimport { parsePercent } from '../../parser/percent';\nimport { ifNaN } from '../../util/internals';\n\nconst RE_KEY_VALUE_PAIRS = /\\s*;\\s*/;\nconst RE_KEY_VALUE = /\\s*:\\s*/;\n\nfunction parseColorStop(el: SVGStopElement, multiplier: number) {\n let colorValue, opacity;\n const style = el.getAttribute('style');\n if (style) {\n const keyValuePairs = style.split(RE_KEY_VALUE_PAIRS);\n\n if (keyValuePairs[keyValuePairs.length - 1] === '') {\n keyValuePairs.pop();\n }\n\n for (let i = keyValuePairs.length; i--; ) {\n const [key, value] = keyValuePairs[i]\n .split(RE_KEY_VALUE)\n .map((s) => s.trim());\n if (key === 'stop-color') {\n colorValue = value;\n } else if (key === 'stop-opacity') {\n opacity = value;\n }\n }\n }\n\n const color = new Color(\n colorValue || el.getAttribute('stop-color') || 'rgb(0,0,0)'\n );\n\n return {\n offset: parsePercent(el.getAttribute('offset'), 0),\n color: color.toRgb(),\n opacity:\n ifNaN(parseFloat(opacity || el.getAttribute('stop-opacity') || ''), 1) *\n color.getAlpha() *\n multiplier,\n };\n}\n\nexport function parseColorStops(\n el: SVGGradientElement,\n opacityAttr: string | null\n) {\n const colorStops = [],\n colorStopEls = el.getElementsByTagName('stop'),\n multiplier = parsePercent(opacityAttr, 1);\n for (let i = colorStopEls.length; i--; ) {\n colorStops.push(parseColorStop(colorStopEls[i], multiplier));\n }\n return colorStops;\n}\n","import { isPercent } from '../../parser/percent';\nimport { TSize } from '../../typedefs';\nimport { GradientCoords, GradientType, GradientUnits } from '../typedefs';\nimport { parseGradientUnits, parseType } from './misc';\n\nfunction convertPercentUnitsToValues<\n T extends GradientType,\n K extends keyof GradientCoords\n>(\n valuesToConvert: Record,\n { width, height, gradientUnits }: TSize & { gradientUnits: GradientUnits }\n) {\n let finalValue;\n return (Object.keys(valuesToConvert) as K[]).reduce((acc, prop) => {\n const propValue = valuesToConvert[prop];\n if (propValue === 'Infinity') {\n finalValue = 1;\n } else if (propValue === '-Infinity') {\n finalValue = 0;\n } else {\n finalValue =\n typeof propValue === 'string' ? parseFloat(propValue) : propValue;\n if (typeof propValue === 'string' && isPercent(propValue)) {\n finalValue *= 0.01;\n if (gradientUnits === 'pixels') {\n // then we need to fix those percentages here in svg parsing\n if (prop === 'x1' || prop === 'x2' || prop === 'r2') {\n finalValue *= width;\n }\n if (prop === 'y1' || prop === 'y2') {\n finalValue *= height;\n }\n }\n }\n }\n acc[prop] = finalValue;\n return acc;\n }, {} as Record);\n}\n\nfunction getValue(el: SVGGradientElement, key: string) {\n return el.getAttribute(key);\n}\n\nexport function parseLinearCoords(el: SVGGradientElement) {\n return {\n x1: getValue(el, 'x1') || 0,\n y1: getValue(el, 'y1') || 0,\n x2: getValue(el, 'x2') || '100%',\n y2: getValue(el, 'y2') || 0,\n };\n}\n\nexport function parseRadialCoords(el: SVGGradientElement) {\n return {\n x1: getValue(el, 'fx') || getValue(el, 'cx') || '50%',\n y1: getValue(el, 'fy') || getValue(el, 'cy') || '50%',\n r1: 0,\n x2: getValue(el, 'cx') || '50%',\n y2: getValue(el, 'cy') || '50%',\n r2: getValue(el, 'r') || '50%',\n };\n}\n\nexport function parseCoords(el: SVGGradientElement, size: TSize) {\n return convertPercentUnitsToValues(\n parseType(el) === 'linear' ? parseLinearCoords(el) : parseRadialCoords(el),\n {\n ...size,\n gradientUnits: parseGradientUnits(el),\n }\n );\n}\n","import { fabric } from '../../HEADER';\nimport { Color } from '../color';\nimport { iMatrix } from '../constants';\nimport { parseTransformAttribute } from '../parser/parseTransformAttribute';\nimport { TMat2D } from '../typedefs';\nimport { pick } from '../util/misc/pick';\nimport { matrixToSVG } from '../util/misc/svgParsing';\nimport { linearDefaultCoords, radialDefaultCoords } from './constants';\nimport {\n parseColorStops,\n parseCoords,\n parseGradientUnits,\n parseType,\n} from './parser';\nimport {\n ColorStop,\n GradientCoords,\n GradientOptions,\n GradientType,\n GradientUnits,\n SVGOptions,\n} from './typedefs';\n\n/**\n * @todo remove this transient junk\n */\ntype FabricObject = any;\n\n/**\n * Gradient class\n * @class Gradient\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#gradients}\n */\nexport class Gradient<\n S,\n T extends GradientType = S extends GradientType ? S : 'linear'\n> {\n /**\n * Horizontal offset for aligning gradients coming from SVG when outside pathgroups\n * @type Number\n * @default 0\n */\n offsetX = 0;\n\n /**\n * Vertical offset for aligning gradients coming from SVG when outside pathgroups\n * @type Number\n * @default 0\n */\n offsetY = 0;\n\n /**\n * A transform matrix to apply to the gradient before painting.\n * Imported from svg gradients, is not applied with the current transform in the center.\n * Before this transform is applied, the origin point is at the top left corner of the object\n * plus the addition of offsetY and offsetX.\n * @type Number[]\n * @default null\n */\n gradientTransform: TMat2D | null = null;\n\n /**\n * coordinates units for coords.\n * If `pixels`, the number of coords are in the same unit of width / height.\n * If set as `percentage` the coords are still a number, but 1 means 100% of width\n * for the X and 100% of the height for the y. It can be bigger than 1 and negative.\n * allowed values pixels or percentage.\n * @type GradientUnits\n * @default 'pixels'\n */\n gradientUnits: GradientUnits;\n\n /**\n * Gradient type linear or radial\n * @type GradientType\n * @default 'linear'\n */\n type: T;\n\n coords: GradientCoords;\n\n colorStops: ColorStop[];\n\n private id: string | number;\n\n constructor({\n type = 'linear' as T,\n gradientUnits = 'pixels',\n coords,\n colorStops = [],\n offsetX = 0,\n offsetY = 0,\n gradientTransform,\n id,\n }: GradientOptions) {\n const uid = fabric.Object.__uid++;\n this.id = id ? `${id}_${uid}` : uid;\n this.type = type;\n this.gradientUnits = gradientUnits;\n this.gradientTransform = gradientTransform || null;\n this.offsetX = offsetX;\n this.offsetY = offsetY;\n this.coords = {\n ...(this.type === 'radial' ? radialDefaultCoords : linearDefaultCoords),\n ...coords,\n } as GradientCoords;\n this.colorStops = colorStops.slice();\n }\n\n // isType(type: S): this is Gradient {\n // return (this.type as GradientType) === type;\n // }\n\n /**\n * Adds another colorStop\n * @param {Record} colorStop Object with offset and color\n * @return {Gradient} thisArg\n */\n addColorStop(colorStops: Record) {\n for (const position in colorStops) {\n const color = new Color(colorStops[position]);\n this.colorStops.push({\n offset: parseFloat(position),\n color: color.toRgb(),\n opacity: color.getAlpha(),\n });\n }\n return this;\n }\n\n /**\n * Returns object representation of a gradient\n * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {object}\n */\n toObject(propertiesToInclude?: (keyof this)[]) {\n return {\n ...pick(this, propertiesToInclude),\n type: this.type,\n coords: this.coords,\n colorStops: this.colorStops,\n offsetX: this.offsetX,\n offsetY: this.offsetY,\n gradientUnits: this.gradientUnits,\n gradientTransform: this.gradientTransform\n ? this.gradientTransform.concat()\n : this.gradientTransform,\n };\n }\n\n /* _TO_SVG_START_ */\n /**\n * Returns SVG representation of an gradient\n * @param {fabric.Object} object Object to create a gradient for\n * @return {String} SVG representation of an gradient (linear/radial)\n */\n toSVG(\n object: FabricObject,\n { additionalTransform: preTransform }: { additionalTransform?: string } = {}\n ) {\n const markup = [],\n transform = (\n this.gradientTransform\n ? this.gradientTransform.concat()\n : iMatrix.concat()\n ) as TMat2D,\n gradientUnits =\n this.gradientUnits === 'pixels'\n ? 'userSpaceOnUse'\n : 'objectBoundingBox';\n // colorStops must be sorted ascending, and guarded against deep mutations\n const colorStops = this.colorStops\n .map((colorStop) => ({ ...colorStop }))\n .sort((a, b) => {\n return a.offset - b.offset;\n });\n\n let offsetX = -this.offsetX,\n offsetY = -this.offsetY;\n if (gradientUnits === 'objectBoundingBox') {\n offsetX /= object.width;\n offsetY /= object.height;\n } else {\n offsetX += object.width / 2;\n offsetY += object.height / 2;\n }\n if (object.type === 'path' && this.gradientUnits !== 'percentage') {\n offsetX -= object.pathOffset.x;\n offsetY -= object.pathOffset.y;\n }\n transform[4] -= offsetX;\n transform[5] -= offsetY;\n\n const commonAttributes = [\n `id=\"SVGID_${this.id}\"`,\n `gradientUnits=\"${gradientUnits}\"`,\n `gradientTransform=\"${\n preTransform ? preTransform + ' ' : ''\n }${matrixToSVG(transform)}\"`,\n '',\n ].join(' ');\n\n if (this.type === 'linear') {\n const { x1, y1, x2, y2 } = this.coords;\n markup.push(\n '\\n'\n );\n } else if (this.type === 'radial') {\n const { x1, y1, x2, y2, r1, r2 } = this\n .coords as GradientCoords<'radial'>;\n const needsSwap = r1 > r2;\n // svg radial gradient has just 1 radius. the biggest.\n markup.push(\n '\\n'\n );\n if (needsSwap) {\n // svg goes from internal to external radius. if radius are inverted, swap color stops.\n colorStops.reverse(); // mutates array\n colorStops.forEach((colorStop) => {\n colorStop.offset = 1 - colorStop.offset;\n });\n }\n const minRadius = Math.min(r1, r2);\n if (minRadius > 0) {\n // i have to shift all colorStops and add new one in 0.\n const maxRadius = Math.max(r1, r2),\n percentageShift = minRadius / maxRadius;\n colorStops.forEach((colorStop) => {\n colorStop.offset += percentageShift * (1 - colorStop.offset);\n });\n }\n }\n\n colorStops.forEach(({ color, offset, opacity }) => {\n markup.push(\n '\\n'\n );\n });\n\n markup.push(\n this.type === 'linear' ? '' : '',\n '\\n'\n );\n\n return markup.join('');\n }\n /* _TO_SVG_END_ */\n\n /**\n * Returns an instance of CanvasGradient\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @return {CanvasGradient}\n */\n toLive(ctx: CanvasRenderingContext2D) {\n if (!this.type) {\n return;\n }\n\n const coords = this.coords as GradientCoords<'radial'>;\n const gradient =\n this.type === 'linear'\n ? ctx.createLinearGradient(coords.x1, coords.y1, coords.x2, coords.y2)\n : ctx.createRadialGradient(\n coords.x1,\n coords.y1,\n coords.r1,\n coords.x2,\n coords.y2,\n coords.r2\n );\n\n this.colorStops.forEach(({ color, opacity, offset }) => {\n gradient.addColorStop(\n offset,\n typeof opacity !== 'undefined'\n ? new Color(color).setAlpha(opacity).toRgba()\n : color\n );\n });\n\n return gradient;\n }\n\n /* _FROM_SVG_START_ */\n /**\n * Returns {@link Gradient} instance from an SVG element\n * @static\n * @memberOf Gradient\n * @param {SVGGradientElement} el SVG gradient element\n * @param {FabricObject} instance\n * @param {String} opacity A fill-opacity or stroke-opacity attribute to multiply to each stop's opacity.\n * @param {SVGOptions} svgOptions an object containing the size of the SVG in order to parse correctly gradients\n * that uses gradientUnits as 'userSpaceOnUse' and percentages.\n * @return {Gradient} Gradient instance\n * @see http://www.w3.org/TR/SVG/pservers.html#LinearGradientElement\n * @see http://www.w3.org/TR/SVG/pservers.html#RadialGradientElement\n *\n * @example\n *\n * \n * \n * \n * \n *\n * OR\n *\n * \n * \n * \n * \n *\n * OR\n *\n * \n * \n * \n * \n * \n *\n * OR\n *\n * \n * \n * \n * \n * \n *\n */\n static fromElement(\n el: SVGGradientElement,\n instance: FabricObject,\n svgOptions: SVGOptions\n ): Gradient {\n const gradientUnits = parseGradientUnits(el);\n return new Gradient({\n id: el.getAttribute('id') || undefined,\n type: parseType(el),\n coords: parseCoords(el, {\n width: svgOptions.viewBoxWidth || svgOptions.width,\n height: svgOptions.viewBoxHeight || svgOptions.height,\n }),\n colorStops: parseColorStops(el, svgOptions.opacity),\n gradientUnits,\n gradientTransform: parseTransformAttribute(\n el.getAttribute('gradientTransform') || ''\n ),\n ...(gradientUnits === 'pixels'\n ? {\n offsetX: -instance.left,\n offsetY: -instance.top,\n }\n : {\n offsetX: 0,\n offsetY: 0,\n }),\n });\n }\n /* _FROM_SVG_END_ */\n}\n\nfabric.Gradient = Gradient;\n","//@ts-nocheck\n\nimport { fabric } from '../HEADER';\nimport { config } from './config';\nimport { TCrossOrigin, TMat2D, TSize } from './typedefs';\nimport { ifNaN } from './util/internals';\nimport { loadImage } from './util/misc/objectEnlive';\nimport { pick } from './util/misc/pick';\nimport { toFixed } from './util/misc/toFixed';\n\nexport type TPatternRepeat = 'repeat' | 'repeat-x' | 'repeat-y' | 'no-repeat';\n\ntype TExportedKeys =\n | 'crossOrigin'\n | 'offsetX'\n | 'offsetY'\n | 'patternTransform'\n | 'repeat'\n | 'source';\n\nexport type TPatternOptions = Partial>;\n\nexport type TPatternSerialized = TPatternOptions & {\n source: string;\n};\n\nexport type TPatternHydrationOptions = {\n /**\n * handle aborting\n * @see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n */\n signal: AbortSignal;\n};\n\ntype TImageSource = { source: HTMLImageElement };\ntype TCanvasSource = { source: HTMLCanvasElement };\n\n/**\n * @see {@link http://fabricjs.com/patterns demo}\n * @see {@link http://fabricjs.com/dynamic-patterns demo}\n */\nexport class Pattern {\n type = 'pattern';\n\n /**\n * @type TPatternRepeat\n * @defaults\n */\n repeat: TPatternRepeat = 'repeat';\n\n /**\n * Pattern horizontal offset from object's left/top corner\n * @type Number\n * @default\n */\n offsetX = 0;\n\n /**\n * Pattern vertical offset from object's left/top corner\n * @type Number\n * @default\n */\n offsetY = 0;\n\n /**\n * @type TCrossOrigin\n * @default\n */\n crossOrigin: TCrossOrigin = '';\n\n /**\n * transform matrix to change the pattern, imported from svgs.\n * @type Array\n * @default\n */\n patternTransform: TMat2D | null = null;\n\n source!: CanvasImageSource;\n\n readonly id: number;\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n * @param {option.source} [source] the pattern source, eventually empty or a drawable\n * @return {fabric.Pattern} thisArg\n */\n constructor(options: TPatternOptions = {}) {\n this.id = fabric.Object.__uid++;\n this.setOptions(options);\n }\n\n setOptions(options: Record) {\n for (const prop in options) {\n this[prop] = options[prop];\n }\n }\n\n /**\n * @returns true if {@link source} is an element\n */\n isImageSource(): this is TImageSource {\n return typeof this.source.src === 'string';\n }\n\n /**\n * @returns true if {@link source} is a element\n */\n isCanvasSource(): this is TCanvasSource {\n return typeof this.source === 'object' && this.source.toDataURL;\n }\n\n sourceToString() {\n return this.isImageSource()\n ? this.source.src\n : this.isCanvasSource()\n ? this.source.toDataURL()\n : '';\n }\n\n /**\n * Returns an instance of CanvasPattern\n * @param {CanvasRenderingContext2D} ctx Context to create pattern\n * @return {CanvasPattern}\n */\n toLive(ctx: CanvasRenderingContext2D) {\n if (\n // if the image failed to load, return, and allow rest to continue loading\n !this.source ||\n // if an image\n (this.isImageSource() &&\n (!this.source.complete ||\n this.source.naturalWidth === 0 ||\n this.source.naturalHeight === 0))\n ) {\n return '';\n }\n\n return ctx.createPattern(this.source, this.repeat);\n }\n\n /**\n * Returns object representation of a pattern\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {object} Object representation of a pattern instance\n */\n toObject(propertiesToInclude: (keyof this)[]) {\n return {\n ...pick(this, propertiesToInclude),\n type: 'pattern',\n source: this.sourceToString(),\n repeat: this.repeat,\n crossOrigin: this.crossOrigin,\n offsetX: toFixed(this.offsetX, config.NUM_FRACTION_DIGITS),\n offsetY: toFixed(this.offsetY, config.NUM_FRACTION_DIGITS),\n patternTransform: this.patternTransform\n ? this.patternTransform.concat()\n : null,\n };\n }\n\n /* _TO_SVG_START_ */\n /**\n * Returns SVG representation of a pattern\n */\n toSVG({ width, height }: TSize) {\n const patternSource = this.source,\n patternOffsetX = ifNaN(this.offsetX / width, 0),\n patternOffsetY = ifNaN(this.offsetY / height, 0),\n patternWidth =\n this.repeat === 'repeat-y' || this.repeat === 'no-repeat'\n ? 1 + Math.abs(patternOffsetX || 0)\n : ifNaN(patternSource.width / width, 0),\n patternHeight =\n this.repeat === 'repeat-x' || this.repeat === 'no-repeat'\n ? 1 + Math.abs(patternOffsetY || 0)\n : ifNaN(patternSource.height / height, 0);\n\n return [\n ``,\n ``,\n ``,\n '',\n ].join('\\n');\n }\n /* _TO_SVG_END_ */\n\n static async fromObject(\n { source, ...serialized }: TPatternSerialized,\n options: TPatternHydrationOptions\n ) {\n const img = await loadImage(source, {\n ...options,\n crossOrigin: serialized.crossOrigin,\n });\n return new Pattern({ ...serialized, source: img });\n }\n}\n\nfabric.Pattern = Pattern;\n","//@ts-nocheck\n\nimport { Color } from './color';\nimport { config } from './config';\nimport { Point } from './point.class';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n toFixed = fabric.util.toFixed;\n\n /**\n * Shadow class\n * @class fabric.Shadow\n * @see {@link http://fabricjs.com/shadows|Shadow demo}\n * @see {@link fabric.Shadow#initialize} for constructor definition\n */\n fabric.Shadow = fabric.util.createClass(\n /** @lends fabric.Shadow.prototype */ {\n /**\n * Shadow color\n * @type String\n * @default\n */\n color: 'rgb(0,0,0)',\n\n /**\n * Shadow blur\n * @type Number\n */\n blur: 0,\n\n /**\n * Shadow horizontal offset\n * @type Number\n * @default\n */\n offsetX: 0,\n\n /**\n * Shadow vertical offset\n * @type Number\n * @default\n */\n offsetY: 0,\n\n /**\n * Whether the shadow should affect stroke operations\n * @type Boolean\n * @default\n */\n affectStroke: false,\n\n /**\n * Indicates whether toObject should include default values\n * @type Boolean\n * @default\n */\n includeDefaultValues: true,\n\n /**\n * When `false`, the shadow will scale with the object.\n * When `true`, the shadow's offsetX, offsetY, and blur will not be affected by the object's scale.\n * default to false\n * @type Boolean\n * @default\n */\n nonScaling: false,\n\n /**\n * Constructor\n * @param {Object|String} [options] Options object with any of color, blur, offsetX, offsetY properties or string (e.g. \"rgba(0,0,0,0.2) 2px 2px 10px\")\n * @return {fabric.Shadow} thisArg\n */\n initialize: function (options) {\n if (typeof options === 'string') {\n options = this._parseShadow(options);\n }\n\n for (var prop in options) {\n this[prop] = options[prop];\n }\n\n this.id = fabric.Object.__uid++;\n },\n\n /**\n * @private\n * @param {String} shadow Shadow value to parse\n * @return {Object} Shadow object with color, offsetX, offsetY and blur\n */\n _parseShadow: function (shadow) {\n var shadowStr = shadow.trim(),\n offsetsAndBlur = fabric.Shadow.reOffsetsAndBlur.exec(shadowStr) || [],\n color =\n shadowStr.replace(fabric.Shadow.reOffsetsAndBlur, '') ||\n 'rgb(0,0,0)';\n\n return {\n color: color.trim(),\n offsetX: parseFloat(offsetsAndBlur[1], 10) || 0,\n offsetY: parseFloat(offsetsAndBlur[2], 10) || 0,\n blur: parseFloat(offsetsAndBlur[3], 10) || 0,\n };\n },\n\n /**\n * Returns a string representation of an instance\n * @see http://www.w3.org/TR/css-text-decor-3/#text-shadow\n * @return {String} Returns CSS3 text-shadow declaration\n */\n toString: function () {\n return [this.offsetX, this.offsetY, this.blur, this.color].join('px ');\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns SVG representation of a shadow\n * @param {fabric.Object} object\n * @return {String} SVG representation of a shadow\n */\n toSVG: function (object) {\n var fBoxX = 40,\n fBoxY = 40,\n NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS,\n offset = fabric.util.rotateVector(\n new Point(this.offsetX, this.offsetY),\n fabric.util.degreesToRadians(-object.angle)\n ),\n BLUR_BOX = 20,\n color = new Color(this.color);\n\n if (object.width && object.height) {\n //http://www.w3.org/TR/SVG/filters.html#FilterEffectsRegion\n // we add some extra space to filter box to contain the blur ( 20 )\n fBoxX =\n toFixed(\n (Math.abs(offset.x) + this.blur) / object.width,\n NUM_FRACTION_DIGITS\n ) *\n 100 +\n BLUR_BOX;\n fBoxY =\n toFixed(\n (Math.abs(offset.y) + this.blur) / object.height,\n NUM_FRACTION_DIGITS\n ) *\n 100 +\n BLUR_BOX;\n }\n if (object.flipX) {\n offset.x *= -1;\n }\n if (object.flipY) {\n offset.y *= -1;\n }\n\n return (\n '\\n' +\n '\\t\\n' +\n '\\t\\n' +\n '\\t\\n' +\n '\\t\\n' +\n '\\t\\n' +\n '\\t\\t\\n' +\n '\\t\\t\\n' +\n '\\t\\n' +\n '\\n'\n );\n },\n /* _TO_SVG_END_ */\n\n /**\n * Returns object representation of a shadow\n * @return {Object} Object representation of a shadow instance\n */\n toObject: function () {\n if (this.includeDefaultValues) {\n return {\n color: this.color,\n blur: this.blur,\n offsetX: this.offsetX,\n offsetY: this.offsetY,\n affectStroke: this.affectStroke,\n nonScaling: this.nonScaling,\n };\n }\n var obj = {},\n proto = fabric.Shadow.prototype;\n\n [\n 'color',\n 'blur',\n 'offsetX',\n 'offsetY',\n 'affectStroke',\n 'nonScaling',\n ].forEach(function (prop) {\n if (this[prop] !== proto[prop]) {\n obj[prop] = this[prop];\n }\n }, this);\n\n return obj;\n },\n }\n );\n\n /**\n * Regex matching shadow offsetX, offsetY and blur (ex: \"2px 2px 10px rgba(0,0,0,0.2)\", \"rgb(0,255,0) 2px 2px\")\n * @static\n * @field\n * @memberOf fabric.Shadow\n */\n // eslint-disable-next-line max-len\n fabric.Shadow.reOffsetsAndBlur =\n /(?:\\s|^)(-?\\d+(?:\\.\\d*)?(?:px)?(?:\\s?|$))?(-?\\d+(?:\\.\\d*)?(?:px)?(?:\\s?|$))?(\\d+(?:\\.\\d*)?(?:px)?)?(?:\\s?|$)(?:$|\\s)/;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { config } from './config';\nimport { VERSION } from './constants';\nimport { Point } from './point.class';\nimport { requestAnimFrame } from './util/animate';\nimport { removeFromArray } from './util/internals';\nimport { pick } from './util/misc/pick';\n\n(function (global) {\n // aliases for faster resolution\n var fabric = global.fabric,\n extend = fabric.util.object.extend,\n getElementOffset = fabric.util.getElementOffset,\n toFixed = fabric.util.toFixed,\n transformPoint = fabric.util.transformPoint,\n invertTransform = fabric.util.invertTransform,\n getNodeCanvas = fabric.util.getNodeCanvas,\n createCanvasElement = fabric.util.createCanvasElement,\n CANVAS_INIT_ERROR = new Error('Could not initialize `canvas` element');\n\n /**\n * Static canvas class\n * @class fabric.StaticCanvas\n * @mixes fabric.Collection\n * @mixes fabric.Observable\n * @see {@link http://fabricjs.com/static_canvas|StaticCanvas demo}\n * @see {@link fabric.StaticCanvas#initialize} for constructor definition\n * @fires before:render\n * @fires after:render\n * @fires canvas:cleared\n * @fires object:added\n * @fires object:removed\n */\n // eslint-disable-next-line max-len\n fabric.StaticCanvas = fabric.util.createClass(\n fabric.CommonMethods,\n fabric.Collection,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Constructor\n * @param {HTMLElement | String} el <canvas> element to initialize instance on\n * @param {Object} [options] Options object\n * @return {Object} thisArg\n */\n initialize: function (el, options) {\n options || (options = {});\n this.renderAndResetBound = this.renderAndReset.bind(this);\n this.requestRenderAllBound = this.requestRenderAll.bind(this);\n this._initStatic(el, options);\n },\n\n /**\n * Background color of canvas instance.\n * @type {(String|fabric.Pattern)}\n * @default\n */\n backgroundColor: '',\n\n /**\n * Background image of canvas instance.\n * since 2.4.0 image caching is active, please when putting an image as background, add to the\n * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom\n * vale. As an alternative you can disable image objectCaching\n * @type fabric.Image\n * @default\n */\n backgroundImage: null,\n\n /**\n * Overlay color of canvas instance.\n * @since 1.3.9\n * @type {(String|fabric.Pattern)}\n * @default\n */\n overlayColor: '',\n\n /**\n * Overlay image of canvas instance.\n * since 2.4.0 image caching is active, please when putting an image as overlay, add to the\n * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom\n * vale. As an alternative you can disable image objectCaching\n * @type fabric.Image\n * @default\n */\n overlayImage: null,\n\n /**\n * Indicates whether toObject/toDatalessObject should include default values\n * if set to false, takes precedence over the object value.\n * @type Boolean\n * @default\n */\n includeDefaultValues: true,\n\n /**\n * Indicates whether objects' state should be saved\n * @type Boolean\n * @default\n */\n stateful: false,\n\n /**\n * Indicates whether {@link fabric.Collection.add}, {@link fabric.Collection.insertAt} and {@link fabric.Collection.remove},\n * {@link fabric.StaticCanvas.moveTo}, {@link fabric.StaticCanvas.clear} and many more, should also re-render canvas.\n * Disabling this option will not give a performance boost when adding/removing a lot of objects to/from canvas at once\n * since the renders are quequed and executed one per frame.\n * Disabling is suggested anyway and managing the renders of the app manually is not a big effort ( canvas.requestRenderAll() )\n * Left default to true to do not break documentation and old app, fiddles.\n * @type Boolean\n * @default\n */\n renderOnAddRemove: true,\n\n /**\n * Indicates whether object controls (borders/controls) are rendered above overlay image\n * @type Boolean\n * @default\n */\n controlsAboveOverlay: false,\n\n /**\n * Indicates whether the browser can be scrolled when using a touchscreen and dragging on the canvas\n * @type Boolean\n * @default\n */\n allowTouchScrolling: false,\n\n /**\n * Indicates whether this canvas will use image smoothing, this is on by default in browsers\n * @type Boolean\n * @default\n */\n imageSmoothingEnabled: true,\n\n /**\n * The transformation (a Canvas 2D API transform matrix) which focuses the viewport\n * @type Array\n * @example Default transform\n * canvas.viewportTransform = [1, 0, 0, 1, 0, 0];\n * @example Scale by 70% and translate toward bottom-right by 50, without skewing\n * canvas.viewportTransform = [0.7, 0, 0, 0.7, 50, 50];\n * @default\n */\n viewportTransform: fabric.iMatrix.concat(),\n\n /**\n * if set to false background image is not affected by viewport transform\n * @since 1.6.3\n * @type Boolean\n * @default\n */\n backgroundVpt: true,\n\n /**\n * if set to false overlya image is not affected by viewport transform\n * @since 1.6.3\n * @type Boolean\n * @default\n */\n overlayVpt: true,\n\n /**\n * When true, canvas is scaled by devicePixelRatio for better rendering on retina screens\n * @type Boolean\n * @default\n */\n enableRetinaScaling: true,\n\n /**\n * Describe canvas element extension over design\n * properties are tl,tr,bl,br.\n * if canvas is not zoomed/panned those points are the four corner of canvas\n * if canvas is viewportTransformed you those points indicate the extension\n * of canvas element in plain untrasformed coordinates\n * The coordinates get updated with @method calcViewportBoundaries.\n * @memberOf fabric.StaticCanvas.prototype\n */\n vptCoords: {},\n\n /**\n * Based on vptCoords and object.aCoords, skip rendering of objects that\n * are not included in current viewport.\n * May greatly help in applications with crowded canvas and use of zoom/pan\n * If One of the corner of the bounding box of the object is on the canvas\n * the objects get rendered.\n * @memberOf fabric.StaticCanvas.prototype\n * @type Boolean\n * @default\n */\n skipOffscreen: true,\n\n /**\n * a fabricObject that, without stroke define a clipping area with their shape. filled in black\n * the clipPath object gets used when the canvas has rendered, and the context is placed in the\n * top left corner of the canvas.\n * clipPath will clip away controls, if you do not want this to happen use controlsAboveOverlay = true\n * @type fabric.Object\n */\n clipPath: undefined,\n\n /**\n * @private\n * @param {HTMLElement | String} el <canvas> element to initialize instance on\n * @param {Object} [options] Options object\n */\n _initStatic: function (el, options) {\n this._objects = [];\n this._createLowerCanvas(el);\n this._initOptions(options);\n // only initialize retina scaling once\n if (!this.interactive) {\n this._initRetinaScaling();\n }\n this.calcOffset();\n },\n\n /**\n * @private\n */\n _isRetinaScaling: function () {\n return config.devicePixelRatio > 1 && this.enableRetinaScaling;\n },\n\n /**\n * @private\n * @return {Number} retinaScaling if applied, otherwise 1;\n */\n getRetinaScaling: function () {\n return this._isRetinaScaling()\n ? Math.max(1, config.devicePixelRatio)\n : 1;\n },\n\n /**\n * @private\n */\n _initRetinaScaling: function () {\n if (!this._isRetinaScaling()) {\n return;\n }\n var scaleRatio = config.devicePixelRatio;\n this.__initRetinaScaling(\n scaleRatio,\n this.lowerCanvasEl,\n this.contextContainer\n );\n if (this.upperCanvasEl) {\n this.__initRetinaScaling(\n scaleRatio,\n this.upperCanvasEl,\n this.contextTop\n );\n }\n },\n\n __initRetinaScaling: function (scaleRatio, canvas, context) {\n canvas.setAttribute('width', this.width * scaleRatio);\n canvas.setAttribute('height', this.height * scaleRatio);\n context.scale(scaleRatio, scaleRatio);\n },\n\n /**\n * Calculates canvas element offset relative to the document\n * This method is also attached as \"resize\" event handler of window\n * @return {fabric.Canvas} instance\n * @chainable\n */\n calcOffset: function () {\n this._offset = getElementOffset(this.lowerCanvasEl);\n return this;\n },\n\n /**\n * @private\n */\n _createCanvasElement: function () {\n var element = createCanvasElement();\n if (!element) {\n throw CANVAS_INIT_ERROR;\n }\n if (!element.style) {\n element.style = {};\n }\n if (typeof element.getContext === 'undefined') {\n throw CANVAS_INIT_ERROR;\n }\n return element;\n },\n\n /**\n * @private\n * @param {Object} [options] Options object\n */\n _initOptions: function (options) {\n var lowerCanvasEl = this.lowerCanvasEl;\n this._setOptions(options);\n\n this.width = this.width || parseInt(lowerCanvasEl.width, 10) || 0;\n this.height = this.height || parseInt(lowerCanvasEl.height, 10) || 0;\n\n if (!this.lowerCanvasEl.style) {\n return;\n }\n\n lowerCanvasEl.width = this.width;\n lowerCanvasEl.height = this.height;\n\n lowerCanvasEl.style.width = this.width + 'px';\n lowerCanvasEl.style.height = this.height + 'px';\n\n this.viewportTransform = this.viewportTransform.slice();\n },\n\n /**\n * Creates a bottom canvas\n * @private\n * @param {HTMLElement} [canvasEl]\n */\n _createLowerCanvas: function (canvasEl) {\n // canvasEl === 'HTMLCanvasElement' does not work on jsdom/node\n if (canvasEl && canvasEl.getContext) {\n this.lowerCanvasEl = canvasEl;\n } else {\n this.lowerCanvasEl =\n fabric.document.getElementById(canvasEl) ||\n canvasEl ||\n this._createCanvasElement();\n }\n if (this.lowerCanvasEl.hasAttribute('data-fabric')) {\n /* _DEV_MODE_START_ */\n throw new Error(\n 'fabric.js: trying to initialize a canvas that has already been initialized'\n );\n /* _DEV_MODE_END_ */\n }\n this.lowerCanvasEl.classList.add('lower-canvas');\n this.lowerCanvasEl.setAttribute('data-fabric', 'main');\n if (this.interactive) {\n this._originalCanvasStyle = this.lowerCanvasEl.style.cssText;\n this._applyCanvasStyle(this.lowerCanvasEl);\n }\n\n this.contextContainer = this.lowerCanvasEl.getContext('2d');\n },\n\n /**\n * Returns canvas width (in px)\n * @return {Number}\n */\n getWidth: function () {\n return this.width;\n },\n\n /**\n * Returns canvas height (in px)\n * @return {Number}\n */\n getHeight: function () {\n return this.height;\n },\n\n /**\n * Sets width of this canvas instance\n * @param {Number|String} value Value to set width to\n * @param {Object} [options] Options object\n * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions\n * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n setWidth: function (value, options) {\n return this.setDimensions({ width: value }, options);\n },\n\n /**\n * Sets height of this canvas instance\n * @param {Number|String} value Value to set height to\n * @param {Object} [options] Options object\n * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions\n * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n setHeight: function (value, options) {\n return this.setDimensions({ height: value }, options);\n },\n\n /**\n * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em)\n * @param {Object} dimensions Object with width/height properties\n * @param {Number|String} [dimensions.width] Width of canvas element\n * @param {Number|String} [dimensions.height] Height of canvas element\n * @param {Object} [options] Options object\n * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions\n * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n setDimensions: function (dimensions, options) {\n var cssValue;\n\n options = options || {};\n\n for (var prop in dimensions) {\n cssValue = dimensions[prop];\n\n if (!options.cssOnly) {\n this._setBackstoreDimension(prop, dimensions[prop]);\n cssValue += 'px';\n this.hasLostContext = true;\n }\n\n if (!options.backstoreOnly) {\n this._setCssDimension(prop, cssValue);\n }\n }\n if (this._isCurrentlyDrawing) {\n this.freeDrawingBrush &&\n this.freeDrawingBrush._setBrushStyles(this.contextTop);\n }\n this._initRetinaScaling();\n this.calcOffset();\n\n if (!options.cssOnly) {\n this.requestRenderAll();\n }\n\n return this;\n },\n\n /**\n * Helper for setting width/height\n * @private\n * @param {String} prop property (width|height)\n * @param {Number} value value to set property to\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n _setBackstoreDimension: function (prop, value) {\n this.lowerCanvasEl[prop] = value;\n\n if (this.upperCanvasEl) {\n this.upperCanvasEl[prop] = value;\n }\n\n if (this.cacheCanvasEl) {\n this.cacheCanvasEl[prop] = value;\n }\n\n this[prop] = value;\n\n return this;\n },\n\n /**\n * Helper for setting css width/height\n * @private\n * @param {String} prop property (width|height)\n * @param {String} value value to set property to\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n _setCssDimension: function (prop, value) {\n this.lowerCanvasEl.style[prop] = value;\n\n if (this.upperCanvasEl) {\n this.upperCanvasEl.style[prop] = value;\n }\n\n if (this.wrapperEl) {\n this.wrapperEl.style[prop] = value;\n }\n\n return this;\n },\n\n /**\n * Returns canvas zoom level\n * @return {Number}\n */\n getZoom: function () {\n return this.viewportTransform[0];\n },\n\n /**\n * Sets viewport transformation of this canvas instance\n * @param {Array} vpt a Canvas 2D API transform matrix\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n setViewportTransform: function (vpt) {\n var activeObject = this._activeObject,\n backgroundObject = this.backgroundImage,\n overlayObject = this.overlayImage,\n object,\n i,\n len;\n this.viewportTransform = vpt;\n for (i = 0, len = this._objects.length; i < len; i++) {\n object = this._objects[i];\n object.group || object.setCoords(true);\n }\n if (activeObject) {\n activeObject.setCoords();\n }\n if (backgroundObject) {\n backgroundObject.setCoords(true);\n }\n if (overlayObject) {\n overlayObject.setCoords(true);\n }\n this.calcViewportBoundaries();\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Sets zoom level of this canvas instance, the zoom centered around point\n * meaning that following zoom to point with the same point will have the visual\n * effect of the zoom originating from that point. The point won't move.\n * It has nothing to do with canvas center or visual center of the viewport.\n * @param {Point} point to zoom with respect to\n * @param {Number} value to set zoom to, less than 1 zooms out\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n zoomToPoint: function (point, value) {\n // TODO: just change the scale, preserve other transformations\n var before = point,\n vpt = this.viewportTransform.slice(0);\n point = transformPoint(point, invertTransform(this.viewportTransform));\n vpt[0] = value;\n vpt[3] = value;\n var after = transformPoint(point, vpt);\n vpt[4] += before.x - after.x;\n vpt[5] += before.y - after.y;\n return this.setViewportTransform(vpt);\n },\n\n /**\n * Sets zoom level of this canvas instance\n * @param {Number} value to set zoom to, less than 1 zooms out\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n setZoom: function (value) {\n this.zoomToPoint(new Point(0, 0), value);\n return this;\n },\n\n /**\n * Pan viewport so as to place point at top left corner of canvas\n * @param {Point} point to move to\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n absolutePan: function (point) {\n var vpt = this.viewportTransform.slice(0);\n vpt[4] = -point.x;\n vpt[5] = -point.y;\n return this.setViewportTransform(vpt);\n },\n\n /**\n * Pans viewpoint relatively\n * @param {Point} point (position vector) to move by\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n relativePan: function (point) {\n return this.absolutePan(\n new Point(\n -point.x - this.viewportTransform[4],\n -point.y - this.viewportTransform[5]\n )\n );\n },\n\n /**\n * Returns <canvas> element corresponding to this instance\n * @return {HTMLCanvasElement}\n */\n getElement: function () {\n return this.lowerCanvasEl;\n },\n\n /**\n * @param {...fabric.Object} objects to add\n * @return {Self} thisArg\n * @chainable\n */\n add: function () {\n fabric.Collection.add.call(this, arguments, this._onObjectAdded);\n arguments.length > 0 &&\n this.renderOnAddRemove &&\n this.requestRenderAll();\n return this;\n },\n\n /**\n * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`)\n * An object should be an instance of (or inherit from) fabric.Object\n * @param {fabric.Object|fabric.Object[]} objects Object(s) to insert\n * @param {Number} index Index to insert object at\n * @param {Boolean} nonSplicing When `true`, no splicing (shifting) of objects occurs\n * @return {Self} thisArg\n * @chainable\n */\n insertAt: function (objects, index) {\n fabric.Collection.insertAt.call(\n this,\n objects,\n index,\n this._onObjectAdded\n );\n (Array.isArray(objects) ? objects.length > 0 : !!objects) &&\n this.renderOnAddRemove &&\n this.requestRenderAll();\n return this;\n },\n\n /**\n * @param {...fabric.Object} objects to remove\n * @return {Self} thisArg\n * @chainable\n */\n remove: function () {\n var removed = fabric.Collection.remove.call(\n this,\n arguments,\n this._onObjectRemoved\n );\n removed.length > 0 && this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * @private\n * @param {fabric.Object} obj Object that was added\n */\n _onObjectAdded: function (obj) {\n this.stateful && obj.setupState();\n if (obj.canvas && obj.canvas !== this) {\n /* _DEV_MODE_START_ */\n console.warn(\n 'fabric.Canvas: trying to add an object that belongs to a different canvas.\\n' +\n 'Resulting to default behavior: removing object from previous canvas and adding to new canvas'\n );\n /* _DEV_MODE_END_ */\n obj.canvas.remove(obj);\n }\n obj._set('canvas', this);\n obj.setCoords();\n this.fire('object:added', { target: obj });\n obj.fire('added', { target: this });\n },\n\n /**\n * @private\n * @param {fabric.Object} obj Object that was removed\n */\n _onObjectRemoved: function (obj) {\n obj._set('canvas', undefined);\n this.fire('object:removed', { target: obj });\n obj.fire('removed', { target: this });\n },\n\n /**\n * Clears specified context of canvas element\n * @param {CanvasRenderingContext2D} ctx Context to clear\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n clearContext: function (ctx) {\n ctx.clearRect(0, 0, this.width, this.height);\n return this;\n },\n\n /**\n * Returns context of canvas where objects are drawn\n * @return {CanvasRenderingContext2D}\n */\n getContext: function () {\n return this.contextContainer;\n },\n\n /**\n * Clears all contexts (background, main, top) of an instance\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n clear: function () {\n this.remove.apply(this, this.getObjects());\n this.backgroundImage = null;\n this.overlayImage = null;\n this.backgroundColor = '';\n this.overlayColor = '';\n if (this._hasITextHandlers) {\n this.off('mouse:up', this._mouseUpITextHandler);\n this._iTextInstances = null;\n this._hasITextHandlers = false;\n }\n this.clearContext(this.contextContainer);\n this.fire('canvas:cleared');\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Renders the canvas\n * @return {fabric.Canvas} instance\n * @chainable\n */\n renderAll: function () {\n this.cancelRequestedRender();\n if (this.destroyed) {\n return;\n }\n this.renderCanvas(this.contextContainer, this._objects);\n return this;\n },\n\n /**\n * Function created to be instance bound at initialization\n * used in requestAnimationFrame rendering\n * Let the fabricJS call it. If you call it manually you could have more\n * animationFrame stacking on to of each other\n * for an imperative rendering, use canvas.renderAll\n * @private\n * @return {fabric.Canvas} instance\n * @chainable\n */\n renderAndReset: function () {\n this.nextRenderHandle = 0;\n this.renderAll();\n },\n\n /**\n * Append a renderAll request to next animation frame.\n * unless one is already in progress, in that case nothing is done\n * a boolean flag will avoid appending more.\n * @return {fabric.Canvas} instance\n * @chainable\n */\n requestRenderAll: function () {\n if (!this.nextRenderHandle && !this.disposed && !this.destroyed) {\n this.nextRenderHandle = requestAnimFrame(this.renderAndResetBound);\n }\n return this;\n },\n\n /**\n * Calculate the position of the 4 corner of canvas with current viewportTransform.\n * helps to determinate when an object is in the current rendering viewport using\n * object absolute coordinates ( aCoords )\n * @return {Object} points.tl\n * @chainable\n */\n calcViewportBoundaries: function () {\n var width = this.width,\n height = this.height,\n iVpt = invertTransform(this.viewportTransform),\n a = transformPoint({ x: 0, y: 0 }, iVpt),\n b = transformPoint({ x: width, y: height }, iVpt),\n // we don't support vpt flipping\n // but the code is robust enough to mostly work with flipping\n min = a.min(b),\n max = a.max(b);\n return (this.vptCoords = {\n tl: min,\n tr: new Point(max.x, min.y),\n bl: new Point(min.x, max.y),\n br: max,\n });\n },\n\n cancelRequestedRender: function () {\n if (this.nextRenderHandle) {\n fabric.util.cancelAnimFrame(this.nextRenderHandle);\n this.nextRenderHandle = 0;\n }\n },\n\n /**\n * Renders background, objects, overlay and controls.\n * @param {CanvasRenderingContext2D} ctx\n * @param {Array} objects to render\n * @return {fabric.Canvas} instance\n * @chainable\n */\n renderCanvas: function (ctx, objects) {\n if (this.destroyed) {\n return;\n }\n\n var v = this.viewportTransform,\n path = this.clipPath;\n this.calcViewportBoundaries();\n this.clearContext(ctx);\n ctx.imageSmoothingEnabled = this.imageSmoothingEnabled;\n // node-canvas\n ctx.patternQuality = 'best';\n this.fire('before:render', { ctx: ctx });\n this._renderBackground(ctx);\n\n ctx.save();\n //apply viewport transform once for all rendering process\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n this._renderObjects(ctx, objects);\n ctx.restore();\n if (!this.controlsAboveOverlay && this.interactive) {\n this.drawControls(ctx);\n }\n if (path) {\n path._set('canvas', this);\n // needed to setup a couple of variables\n path.shouldCache();\n path._transformDone = true;\n path.renderCache({ forClipping: true });\n this.drawClipPathOnCanvas(ctx);\n }\n this._renderOverlay(ctx);\n if (this.controlsAboveOverlay && this.interactive) {\n this.drawControls(ctx);\n }\n this.fire('after:render', { ctx: ctx });\n\n if (this.__cleanupTask) {\n this.__cleanupTask();\n this.__cleanupTask = undefined;\n }\n },\n\n /**\n * Paint the cached clipPath on the lowerCanvasEl\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawClipPathOnCanvas: function (ctx) {\n var v = this.viewportTransform,\n path = this.clipPath;\n ctx.save();\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n // DEBUG: uncomment this line, comment the following\n // ctx.globalAlpha = 0.4;\n ctx.globalCompositeOperation = 'destination-in';\n path.transform(ctx);\n ctx.scale(1 / path.zoomX, 1 / path.zoomY);\n ctx.drawImage(\n path._cacheCanvas,\n -path.cacheTranslationX,\n -path.cacheTranslationY\n );\n ctx.restore();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Array} objects to render\n */\n _renderObjects: function (ctx, objects) {\n var i, len;\n for (i = 0, len = objects.length; i < len; ++i) {\n objects[i] && objects[i].render(ctx);\n }\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {string} property 'background' or 'overlay'\n */\n _renderBackgroundOrOverlay: function (ctx, property) {\n var fill = this[property + 'Color'],\n object = this[property + 'Image'],\n v = this.viewportTransform,\n needsVpt = this[property + 'Vpt'];\n if (!fill && !object) {\n return;\n }\n if (fill) {\n ctx.save();\n ctx.beginPath();\n ctx.moveTo(0, 0);\n ctx.lineTo(this.width, 0);\n ctx.lineTo(this.width, this.height);\n ctx.lineTo(0, this.height);\n ctx.closePath();\n ctx.fillStyle = fill.toLive ? fill.toLive(ctx, this) : fill;\n if (needsVpt) {\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n }\n ctx.transform(1, 0, 0, 1, fill.offsetX || 0, fill.offsetY || 0);\n var m = fill.gradientTransform || fill.patternTransform;\n m && ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]);\n ctx.fill();\n ctx.restore();\n }\n if (object) {\n ctx.save();\n if (needsVpt) {\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n }\n object.render(ctx);\n ctx.restore();\n }\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderBackground: function (ctx) {\n this._renderBackgroundOrOverlay(ctx, 'background');\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderOverlay: function (ctx) {\n this._renderBackgroundOrOverlay(ctx, 'overlay');\n },\n\n /**\n * Returns coordinates of a center of canvas.\n * Returned value is an object with top and left properties\n * @return {Object} object with \"top\" and \"left\" number values\n * @deprecated migrate to `getCenterPoint`\n */\n getCenter: function () {\n return {\n top: this.height / 2,\n left: this.width / 2,\n };\n },\n\n /**\n * Returns coordinates of a center of canvas.\n * @return {Point}\n */\n getCenterPoint: function () {\n return new Point(this.width / 2, this.height / 2);\n },\n\n /**\n * Centers object horizontally in the canvas\n * @param {fabric.Object} object Object to center horizontally\n * @return {fabric.Canvas} thisArg\n */\n centerObjectH: function (object) {\n return this._centerObject(\n object,\n new Point(this.getCenterPoint().x, object.getCenterPoint().y)\n );\n },\n\n /**\n * Centers object vertically in the canvas\n * @param {fabric.Object} object Object to center vertically\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n centerObjectV: function (object) {\n return this._centerObject(\n object,\n new Point(object.getCenterPoint().x, this.getCenterPoint().y)\n );\n },\n\n /**\n * Centers object vertically and horizontally in the canvas\n * @param {fabric.Object} object Object to center vertically and horizontally\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n centerObject: function (object) {\n var center = this.getCenterPoint();\n return this._centerObject(object, center);\n },\n\n /**\n * Centers object vertically and horizontally in the viewport\n * @param {fabric.Object} object Object to center vertically and horizontally\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n viewportCenterObject: function (object) {\n var vpCenter = this.getVpCenter();\n return this._centerObject(object, vpCenter);\n },\n\n /**\n * Centers object horizontally in the viewport, object.top is unchanged\n * @param {fabric.Object} object Object to center vertically and horizontally\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n viewportCenterObjectH: function (object) {\n var vpCenter = this.getVpCenter();\n this._centerObject(\n object,\n new Point(vpCenter.x, object.getCenterPoint().y)\n );\n return this;\n },\n\n /**\n * Centers object Vertically in the viewport, object.top is unchanged\n * @param {fabric.Object} object Object to center vertically and horizontally\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n viewportCenterObjectV: function (object) {\n var vpCenter = this.getVpCenter();\n\n return this._centerObject(\n object,\n new Point(object.getCenterPoint().x, vpCenter.y)\n );\n },\n\n /**\n * Calculate the point in canvas that correspond to the center of actual viewport.\n * @return {Point} vpCenter, viewport center\n * @chainable\n */\n getVpCenter: function () {\n var center = this.getCenterPoint(),\n iVpt = invertTransform(this.viewportTransform);\n return transformPoint(center, iVpt);\n },\n\n /**\n * @private\n * @param {fabric.Object} object Object to center\n * @param {Point} center Center point\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n _centerObject: function (object, center) {\n object.setXY(center, 'center', 'center');\n object.setCoords();\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Returns dataless JSON representation of canvas\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {String} json string\n */\n toDatalessJSON: function (propertiesToInclude) {\n return this.toDatalessObject(propertiesToInclude);\n },\n\n /**\n * Returns object representation of canvas\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this._toObjectMethod('toObject', propertiesToInclude);\n },\n\n /**\n * Returns Object representation of canvas\n * this alias is provided because if you call JSON.stringify on an instance,\n * the toJSON object will be invoked if it exists.\n * Having a toJSON method means you can do JSON.stringify(myCanvas)\n * @return {Object} JSON compatible object\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization}\n * @see {@link http://jsfiddle.net/fabricjs/pec86/|jsFiddle demo}\n * @example JSON without additional properties\n * var json = canvas.toJSON();\n * @example JSON with additional properties included\n * var json = canvas.toJSON(['lockMovementX', 'lockMovementY', 'lockRotation', 'lockScalingX', 'lockScalingY']);\n * @example JSON without default values\n * var json = canvas.toJSON();\n */\n toJSON: function () {\n return this.toObject();\n },\n\n /**\n * Returns dataless object representation of canvas\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toDatalessObject: function (propertiesToInclude) {\n return this._toObjectMethod('toDatalessObject', propertiesToInclude);\n },\n\n /**\n * @private\n */\n _toObjectMethod: function (methodName, propertiesToInclude) {\n const clipPath = this.clipPath;\n const clipPathData =\n clipPath && !clipPath.excludeFromExport\n ? this._toObject(clipPath, methodName, propertiesToInclude)\n : null;\n return {\n version: VERSION,\n ...pick(this, propertiesToInclude),\n objects: this._objects\n .filter((object) => !object.excludeFromExport)\n .map((instance) =>\n this._toObject(instance, methodName, propertiesToInclude)\n ),\n ...this.__serializeBgOverlay(methodName, propertiesToInclude),\n ...(clipPathData ? { clipPath: clipPathData } : null),\n };\n },\n\n /**\n * @private\n */\n _toObject: function (instance, methodName, propertiesToInclude) {\n var originalValue;\n\n if (!this.includeDefaultValues) {\n originalValue = instance.includeDefaultValues;\n instance.includeDefaultValues = false;\n }\n\n var object = instance[methodName](propertiesToInclude);\n if (!this.includeDefaultValues) {\n instance.includeDefaultValues = originalValue;\n }\n return object;\n },\n\n /**\n * @private\n */\n __serializeBgOverlay: function (methodName, propertiesToInclude) {\n var data = {},\n bgImage = this.backgroundImage,\n overlayImage = this.overlayImage,\n bgColor = this.backgroundColor,\n overlayColor = this.overlayColor;\n\n if (bgColor && bgColor.toObject) {\n if (!bgColor.excludeFromExport) {\n data.background = bgColor.toObject(propertiesToInclude);\n }\n } else if (bgColor) {\n data.background = bgColor;\n }\n\n if (overlayColor && overlayColor.toObject) {\n if (!overlayColor.excludeFromExport) {\n data.overlay = overlayColor.toObject(propertiesToInclude);\n }\n } else if (overlayColor) {\n data.overlay = overlayColor;\n }\n\n if (bgImage && !bgImage.excludeFromExport) {\n data.backgroundImage = this._toObject(\n bgImage,\n methodName,\n propertiesToInclude\n );\n }\n if (overlayImage && !overlayImage.excludeFromExport) {\n data.overlayImage = this._toObject(\n overlayImage,\n methodName,\n propertiesToInclude\n );\n }\n\n return data;\n },\n\n /* _TO_SVG_START_ */\n /**\n * When true, getSvgTransform() will apply the StaticCanvas.viewportTransform to the SVG transformation. When true,\n * a zoomed canvas will then produce zoomed SVG output.\n * @type Boolean\n * @default\n */\n svgViewportTransformation: true,\n\n /**\n * Returns SVG representation of canvas\n * @function\n * @param {Object} [options] Options object for SVG output\n * @param {Boolean} [options.suppressPreamble=false] If true xml tag is not included\n * @param {Object} [options.viewBox] SVG viewbox object\n * @param {Number} [options.viewBox.x] x-coordinate of viewbox\n * @param {Number} [options.viewBox.y] y-coordinate of viewbox\n * @param {Number} [options.viewBox.width] Width of viewbox\n * @param {Number} [options.viewBox.height] Height of viewbox\n * @param {String} [options.encoding=UTF-8] Encoding of SVG output\n * @param {String} [options.width] desired width of svg with or without units\n * @param {String} [options.height] desired height of svg with or without units\n * @param {Function} [reviver] Method for further parsing of svg elements, called after each fabric object converted into svg representation.\n * @return {String} SVG string\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization}\n * @see {@link http://jsfiddle.net/fabricjs/jQ3ZZ/|jsFiddle demo}\n * @example Normal SVG output\n * var svg = canvas.toSVG();\n * @example SVG output without preamble (without <?xml ../>)\n * var svg = canvas.toSVG({suppressPreamble: true});\n * @example SVG output with viewBox attribute\n * var svg = canvas.toSVG({\n * viewBox: {\n * x: 100,\n * y: 100,\n * width: 200,\n * height: 300\n * }\n * });\n * @example SVG output with different encoding (default: UTF-8)\n * var svg = canvas.toSVG({encoding: 'ISO-8859-1'});\n * @example Modify SVG output with reviver function\n * var svg = canvas.toSVG(null, function(svg) {\n * return svg.replace('stroke-dasharray: ; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; ', '');\n * });\n */\n toSVG: function (options, reviver) {\n options || (options = {});\n options.reviver = reviver;\n var markup = [];\n\n this._setSVGPreamble(markup, options);\n this._setSVGHeader(markup, options);\n if (this.clipPath) {\n markup.push(\n '\\n'\n );\n }\n this._setSVGBgOverlayColor(markup, 'background');\n this._setSVGBgOverlayImage(markup, 'backgroundImage', reviver);\n this._setSVGObjects(markup, reviver);\n if (this.clipPath) {\n markup.push('\\n');\n }\n this._setSVGBgOverlayColor(markup, 'overlay');\n this._setSVGBgOverlayImage(markup, 'overlayImage', reviver);\n\n markup.push('');\n\n return markup.join('');\n },\n\n /**\n * @private\n */\n _setSVGPreamble: function (markup, options) {\n if (options.suppressPreamble) {\n return;\n }\n markup.push(\n '\\n',\n '\\n'\n );\n },\n\n /**\n * @private\n */\n _setSVGHeader: function (markup, options) {\n var width = options.width || this.width,\n height = options.height || this.height,\n vpt,\n viewBox = 'viewBox=\"0 0 ' + this.width + ' ' + this.height + '\" ',\n NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n\n if (options.viewBox) {\n viewBox =\n 'viewBox=\"' +\n options.viewBox.x +\n ' ' +\n options.viewBox.y +\n ' ' +\n options.viewBox.width +\n ' ' +\n options.viewBox.height +\n '\" ';\n } else {\n if (this.svgViewportTransformation) {\n vpt = this.viewportTransform;\n viewBox =\n 'viewBox=\"' +\n toFixed(-vpt[4] / vpt[0], NUM_FRACTION_DIGITS) +\n ' ' +\n toFixed(-vpt[5] / vpt[3], NUM_FRACTION_DIGITS) +\n ' ' +\n toFixed(this.width / vpt[0], NUM_FRACTION_DIGITS) +\n ' ' +\n toFixed(this.height / vpt[3], NUM_FRACTION_DIGITS) +\n '\" ';\n }\n }\n\n markup.push(\n '\\n',\n 'Created with Fabric.js ',\n VERSION,\n '\\n',\n '\\n',\n this.createSVGFontFacesMarkup(),\n this.createSVGRefElementsMarkup(),\n this.createSVGClipPathMarkup(options),\n '\\n'\n );\n },\n\n createSVGClipPathMarkup: function (options) {\n var clipPath = this.clipPath;\n if (clipPath) {\n clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++;\n return (\n '\\n' +\n this.clipPath.toClipPathSVG(options.reviver) +\n '\\n'\n );\n }\n return '';\n },\n\n /**\n * Creates markup containing SVG referenced elements like patterns, gradients etc.\n * @return {String}\n */\n createSVGRefElementsMarkup: function () {\n var _this = this,\n markup = ['background', 'overlay'].map(function (prop) {\n var fill = _this[prop + 'Color'];\n if (fill && fill.toLive) {\n var shouldTransform = _this[prop + 'Vpt'],\n vpt = _this.viewportTransform,\n object = {\n width: _this.width / (shouldTransform ? vpt[0] : 1),\n height: _this.height / (shouldTransform ? vpt[3] : 1),\n };\n return fill.toSVG(object, {\n additionalTransform: shouldTransform\n ? fabric.util.matrixToSVG(vpt)\n : '',\n });\n }\n });\n return markup.join('');\n },\n\n /**\n * Creates markup containing SVG font faces,\n * font URLs for font faces must be collected by developers\n * and are not extracted from the DOM by fabricjs\n * @param {Array} objects Array of fabric objects\n * @return {String}\n */\n createSVGFontFacesMarkup: function () {\n var markup = '',\n fontList = {},\n obj,\n fontFamily,\n style,\n row,\n rowIndex,\n _char,\n charIndex,\n i,\n len,\n fontPaths = config.fontPaths,\n objects = [];\n\n this._objects.forEach(function add(object) {\n objects.push(object);\n if (object._objects) {\n object._objects.forEach(add);\n }\n });\n\n for (i = 0, len = objects.length; i < len; i++) {\n obj = objects[i];\n fontFamily = obj.fontFamily;\n if (\n obj.type.indexOf('text') === -1 ||\n fontList[fontFamily] ||\n !fontPaths[fontFamily]\n ) {\n continue;\n }\n fontList[fontFamily] = true;\n if (!obj.styles) {\n continue;\n }\n style = obj.styles;\n for (rowIndex in style) {\n row = style[rowIndex];\n for (charIndex in row) {\n _char = row[charIndex];\n fontFamily = _char.fontFamily;\n if (!fontList[fontFamily] && fontPaths[fontFamily]) {\n fontList[fontFamily] = true;\n }\n }\n }\n }\n\n for (var j in fontList) {\n markup += [\n '\\t\\t@font-face {\\n',\n \"\\t\\t\\tfont-family: '\",\n j,\n \"';\\n\",\n \"\\t\\t\\tsrc: url('\",\n fontPaths[j],\n \"');\\n\",\n '\\t\\t}\\n',\n ].join('');\n }\n\n if (markup) {\n markup = [\n '\\t\\n',\n ].join('');\n }\n\n return markup;\n },\n\n /**\n * @private\n */\n _setSVGObjects: function (markup, reviver) {\n var instance,\n i,\n len,\n objects = this._objects;\n for (i = 0, len = objects.length; i < len; i++) {\n instance = objects[i];\n if (instance.excludeFromExport) {\n continue;\n }\n this._setSVGObject(markup, instance, reviver);\n }\n },\n\n /**\n * @private\n */\n _setSVGObject: function (markup, instance, reviver) {\n markup.push(instance.toSVG(reviver));\n },\n\n /**\n * @private\n */\n _setSVGBgOverlayImage: function (markup, property, reviver) {\n if (\n this[property] &&\n !this[property].excludeFromExport &&\n this[property].toSVG\n ) {\n markup.push(this[property].toSVG(reviver));\n }\n },\n\n /**\n * @private\n */\n _setSVGBgOverlayColor: function (markup, property) {\n var filler = this[property + 'Color'],\n vpt = this.viewportTransform,\n finalWidth = this.width,\n finalHeight = this.height;\n if (!filler) {\n return;\n }\n if (filler.toLive) {\n var repeat = filler.repeat,\n iVpt = fabric.util.invertTransform(vpt),\n shouldInvert = this[property + 'Vpt'],\n additionalTransform = shouldInvert\n ? fabric.util.matrixToSVG(iVpt)\n : '';\n markup.push(\n '\\n'\n );\n } else {\n markup.push(\n '\\n'\n );\n }\n },\n /* _TO_SVG_END_ */\n\n /**\n * Moves an object or the objects of a multiple selection\n * to the bottom of the stack of drawn objects\n * @param {fabric.Object} object Object to send to back\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n sendToBack: function (object) {\n if (!object) {\n return this;\n }\n var activeSelection = this._activeObject,\n i,\n obj,\n objs;\n if (object === activeSelection && object.type === 'activeSelection') {\n objs = activeSelection._objects;\n for (i = objs.length; i--; ) {\n obj = objs[i];\n removeFromArray(this._objects, obj);\n this._objects.unshift(obj);\n }\n } else {\n removeFromArray(this._objects, object);\n this._objects.unshift(object);\n }\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Moves an object or the objects of a multiple selection\n * to the top of the stack of drawn objects\n * @param {fabric.Object} object Object to send\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n bringToFront: function (object) {\n if (!object) {\n return this;\n }\n var activeSelection = this._activeObject,\n i,\n obj,\n objs;\n if (object === activeSelection && object.type === 'activeSelection') {\n objs = activeSelection._objects;\n for (i = 0; i < objs.length; i++) {\n obj = objs[i];\n removeFromArray(this._objects, obj);\n this._objects.push(obj);\n }\n } else {\n removeFromArray(this._objects, object);\n this._objects.push(object);\n }\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Moves an object or a selection down in stack of drawn objects\n * An optional parameter, intersecting allows to move the object in behind\n * the first intersecting object. Where intersection is calculated with\n * bounding box. If no intersection is found, there will not be change in the\n * stack.\n * @param {fabric.Object} object Object to send\n * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n sendBackwards: function (object, intersecting) {\n if (!object) {\n return this;\n }\n var activeSelection = this._activeObject,\n i,\n obj,\n idx,\n newIdx,\n objs,\n objsMoved = 0;\n\n if (object === activeSelection && object.type === 'activeSelection') {\n objs = activeSelection._objects;\n for (i = 0; i < objs.length; i++) {\n obj = objs[i];\n idx = this._objects.indexOf(obj);\n if (idx > 0 + objsMoved) {\n newIdx = idx - 1;\n removeFromArray(this._objects, obj);\n this._objects.splice(newIdx, 0, obj);\n }\n objsMoved++;\n }\n } else {\n idx = this._objects.indexOf(object);\n if (idx !== 0) {\n // if object is not on the bottom of stack\n newIdx = this._findNewLowerIndex(object, idx, intersecting);\n removeFromArray(this._objects, object);\n this._objects.splice(newIdx, 0, object);\n }\n }\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * @private\n */\n _findNewLowerIndex: function (object, idx, intersecting) {\n var newIdx, i;\n\n if (intersecting) {\n newIdx = idx;\n\n // traverse down the stack looking for the nearest intersecting object\n for (i = idx - 1; i >= 0; --i) {\n var isIntersecting =\n object.intersectsWithObject(this._objects[i]) ||\n object.isContainedWithinObject(this._objects[i]) ||\n this._objects[i].isContainedWithinObject(object);\n\n if (isIntersecting) {\n newIdx = i;\n break;\n }\n }\n } else {\n newIdx = idx - 1;\n }\n\n return newIdx;\n },\n\n /**\n * Moves an object or a selection up in stack of drawn objects\n * An optional parameter, intersecting allows to move the object in front\n * of the first intersecting object. Where intersection is calculated with\n * bounding box. If no intersection is found, there will not be change in the\n * stack.\n * @param {fabric.Object} object Object to send\n * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n bringForward: function (object, intersecting) {\n if (!object) {\n return this;\n }\n var activeSelection = this._activeObject,\n i,\n obj,\n idx,\n newIdx,\n objs,\n objsMoved = 0;\n\n if (object === activeSelection && object.type === 'activeSelection') {\n objs = activeSelection._objects;\n for (i = objs.length; i--; ) {\n obj = objs[i];\n idx = this._objects.indexOf(obj);\n if (idx < this._objects.length - 1 - objsMoved) {\n newIdx = idx + 1;\n removeFromArray(this._objects, obj);\n this._objects.splice(newIdx, 0, obj);\n }\n objsMoved++;\n }\n } else {\n idx = this._objects.indexOf(object);\n if (idx !== this._objects.length - 1) {\n // if object is not on top of stack (last item in an array)\n newIdx = this._findNewUpperIndex(object, idx, intersecting);\n removeFromArray(this._objects, object);\n this._objects.splice(newIdx, 0, object);\n }\n }\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * @private\n */\n _findNewUpperIndex: function (object, idx, intersecting) {\n var newIdx, i, len;\n\n if (intersecting) {\n newIdx = idx;\n\n // traverse up the stack looking for the nearest intersecting object\n for (i = idx + 1, len = this._objects.length; i < len; ++i) {\n var isIntersecting =\n object.intersectsWithObject(this._objects[i]) ||\n object.isContainedWithinObject(this._objects[i]) ||\n this._objects[i].isContainedWithinObject(object);\n\n if (isIntersecting) {\n newIdx = i;\n break;\n }\n }\n } else {\n newIdx = idx + 1;\n }\n\n return newIdx;\n },\n\n /**\n * Moves an object to specified level in stack of drawn objects\n * @param {fabric.Object} object Object to send\n * @param {Number} index Position to move to\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n moveTo: function (object, index) {\n removeFromArray(this._objects, object);\n this._objects.splice(index, 0, object);\n return this.renderOnAddRemove && this.requestRenderAll();\n },\n\n /**\n * Waits until rendering has settled to destroy the canvas\n * @returns {Promise} a promise resolving to `true` once the canvas has been destroyed or to `false` if the canvas has was already destroyed\n * @throws if aborted by a consequent call\n */\n dispose: function () {\n this.disposed = true;\n return new Promise((resolve, reject) => {\n const task = () => {\n this.destroy();\n resolve(true);\n };\n task.kill = reject;\n if (this.__cleanupTask) {\n this.__cleanupTask.kill('aborted');\n }\n\n if (this.destroyed) {\n resolve(false);\n } else if (this.nextRenderHandle) {\n this.__cleanupTask = task;\n } else {\n task();\n }\n });\n },\n\n /**\n * Clears the canvas element, disposes objects and frees resources\n *\n * **CAUTION**:\n *\n * This method is **UNSAFE**.\n * You may encounter a race condition using it if there's a requested render.\n * Call this method only if you are sure rendering has settled.\n * Consider using {@link dispose} as it is **SAFE**\n *\n * @private\n */\n destroy: function () {\n this.destroyed = true;\n this.cancelRequestedRender();\n this.forEachObject(function (object) {\n object.dispose && object.dispose();\n });\n this._objects = [];\n if (this.backgroundImage && this.backgroundImage.dispose) {\n this.backgroundImage.dispose();\n }\n this.backgroundImage = null;\n if (this.overlayImage && this.overlayImage.dispose) {\n this.overlayImage.dispose();\n }\n this.overlayImage = null;\n this._iTextInstances = null;\n this.contextContainer = null;\n // restore canvas style and attributes\n this.lowerCanvasEl.classList.remove('lower-canvas');\n this.lowerCanvasEl.removeAttribute('data-fabric');\n if (this.interactive) {\n this.lowerCanvasEl.style.cssText = this._originalCanvasStyle;\n delete this._originalCanvasStyle;\n }\n // restore canvas size to original size in case retina scaling was applied\n this.lowerCanvasEl.setAttribute('width', this.width);\n this.lowerCanvasEl.setAttribute('height', this.height);\n fabric.util.cleanUpJsdomNode(this.lowerCanvasEl);\n this.lowerCanvasEl = undefined;\n },\n\n /**\n * Returns a string representation of an instance\n * @return {String} string representation of an instance\n */\n toString: function () {\n return (\n '#'\n );\n },\n }\n );\n\n extend(fabric.StaticCanvas.prototype, fabric.Observable);\n extend(fabric.StaticCanvas.prototype, fabric.DataURLExporter);\n\n extend(\n fabric.StaticCanvas,\n /** @lends fabric.StaticCanvas */ {\n /**\n * @static\n * @type String\n * @default\n */\n EMPTY_JSON: '{\"objects\": [], \"background\": \"white\"}',\n\n /**\n * Provides a way to check support of some of the canvas methods\n * (either those of HTMLCanvasElement itself, or rendering context)\n *\n * @param {String} methodName Method to check support for;\n * Could be one of \"setLineDash\"\n * @return {Boolean | null} `true` if method is supported (or at least exists),\n * `null` if canvas element or context can not be initialized\n */\n supports: function (methodName) {\n var el = createCanvasElement();\n\n if (!el || !el.getContext) {\n return null;\n }\n\n var ctx = el.getContext('2d');\n if (!ctx) {\n return null;\n }\n\n switch (methodName) {\n case 'setLineDash':\n return typeof ctx.setLineDash !== 'undefined';\n\n default:\n return null;\n }\n },\n }\n );\n\n if (fabric.isLikelyNode) {\n fabric.StaticCanvas.prototype.createPNGStream = function () {\n var impl = getNodeCanvas(this.lowerCanvasEl);\n return impl && impl.createPNGStream();\n };\n fabric.StaticCanvas.prototype.createJPEGStream = function (opts) {\n var impl = getNodeCanvas(this.lowerCanvasEl);\n return impl && impl.createJPEGStream(opts);\n };\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from './point.class';\n\n(function (global) {\n var fabric = global.fabric,\n getPointer = fabric.util.getPointer,\n degreesToRadians = fabric.util.degreesToRadians,\n isTouchEvent = fabric.util.isTouchEvent;\n\n /**\n * Canvas class\n * @class fabric.Canvas\n * @extends fabric.StaticCanvas\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#canvas}\n * @see {@link fabric.Canvas#initialize} for constructor definition\n *\n * @fires object:modified at the end of a transform or any change when statefull is true\n * @fires object:rotating while an object is being rotated from the control\n * @fires object:scaling while an object is being scaled by controls\n * @fires object:moving while an object is being dragged\n * @fires object:skewing while an object is being skewed from the controls\n *\n * @fires before:transform before a transform is is started\n * @fires before:selection:cleared\n * @fires selection:cleared\n * @fires selection:updated\n * @fires selection:created\n *\n * @fires path:created after a drawing operation ends and the path is added\n * @fires mouse:down\n * @fires mouse:move\n * @fires mouse:up\n * @fires mouse:down:before on mouse down, before the inner fabric logic runs\n * @fires mouse:move:before on mouse move, before the inner fabric logic runs\n * @fires mouse:up:before on mouse up, before the inner fabric logic runs\n * @fires mouse:over\n * @fires mouse:out\n * @fires mouse:dblclick whenever a native dbl click event fires on the canvas.\n *\n * @fires dragover\n * @fires dragenter\n * @fires dragleave\n * @fires drag:enter object drag enter\n * @fires drag:leave object drag leave\n * @fires drop:before before drop event. Prepare for the drop event (same native event).\n * @fires drop\n * @fires drop:after after drop event. Run logic on canvas after event has been accepted/declined (same native event).\n * @example\n * let a: fabric.Object, b: fabric.Object;\n * let flag = false;\n * canvas.add(a, b);\n * a.on('drop:before', opt => {\n * // we want a to accept the drop even though it's below b in the stack\n * flag = this.canDrop(opt.e);\n * });\n * b.canDrop = function(e) {\n * !flag && this.callSuper('canDrop', e);\n * }\n * b.on('dragover', opt => b.set('fill', opt.dropTarget === b ? 'pink' : 'black'));\n * a.on('drop', opt => {\n * opt.e.defaultPrevented // drop occured\n * opt.didDrop // drop occured on canvas\n * opt.target // drop target\n * opt.target !== a && a.set('text', 'I lost');\n * });\n * canvas.on('drop:after', opt => {\n * // inform user who won\n * if(!opt.e.defaultPrevented) {\n * // no winners\n * }\n * else if(!opt.didDrop) {\n * // my objects didn't win, some other lucky object\n * }\n * else {\n * // we have a winner it's opt.target!!\n * }\n * })\n *\n * @fires after:render at the end of the render process, receives the context in the callback\n * @fires before:render at start the render process, receives the context in the callback\n *\n * @fires contextmenu:before\n * @fires contextmenu\n * @example\n * let handler;\n * targets.forEach(target => {\n * target.on('contextmenu:before', opt => {\n * // decide which target should handle the event before canvas hijacks it\n * if (someCaseHappens && opt.targets.includes(target)) {\n * handler = target;\n * }\n * });\n * target.on('contextmenu', opt => {\n * // do something fantastic\n * });\n * });\n * canvas.on('contextmenu', opt => {\n * if (!handler) {\n * // no one takes responsibility, it's always left to me\n * // let's show them how it's done!\n * }\n * });\n *\n */\n fabric.Canvas = fabric.util.createClass(\n fabric.StaticCanvas,\n /** @lends fabric.Canvas.prototype */ {\n /**\n * Constructor\n * @param {HTMLElement | String} el <canvas> element to initialize instance on\n * @param {Object} [options] Options object\n * @return {Object} thisArg\n */\n initialize: function (el, options) {\n options || (options = {});\n this.renderAndResetBound = this.renderAndReset.bind(this);\n this.requestRenderAllBound = this.requestRenderAll.bind(this);\n this._initStatic(el, options);\n this._initInteractive();\n this._createCacheCanvas();\n },\n\n /**\n * When true, objects can be transformed by one side (unproportionally)\n * when dragged on the corners that normally would not do that.\n * @type Boolean\n * @default\n * @since fabric 4.0 // changed name and default value\n */\n uniformScaling: true,\n\n /**\n * Indicates which key switches uniform scaling.\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * If `null` or 'none' or any other string that is not a modifier key\n * feature is disabled.\n * totally wrong named. this sounds like `uniform scaling`\n * if Canvas.uniformScaling is true, pressing this will set it to false\n * and viceversa.\n * @since 1.6.2\n * @type String\n * @default\n */\n uniScaleKey: 'shiftKey',\n\n /**\n * When true, objects use center point as the origin of scale transformation.\n * Backwards incompatibility note: This property replaces \"centerTransform\" (Boolean).\n * @since 1.3.4\n * @type Boolean\n * @default\n */\n centeredScaling: false,\n\n /**\n * When true, objects use center point as the origin of rotate transformation.\n * Backwards incompatibility note: This property replaces \"centerTransform\" (Boolean).\n * @since 1.3.4\n * @type Boolean\n * @default\n */\n centeredRotation: false,\n\n /**\n * Indicates which key enable centered Transform\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * If `null` or 'none' or any other string that is not a modifier key\n * feature is disabled feature disabled.\n * @since 1.6.2\n * @type String\n * @default\n */\n centeredKey: 'altKey',\n\n /**\n * Indicates which key enable alternate action on corner\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * If `null` or 'none' or any other string that is not a modifier key\n * feature is disabled feature disabled.\n * @since 1.6.2\n * @type String\n * @default\n */\n altActionKey: 'shiftKey',\n\n /**\n * Indicates that canvas is interactive. This property should not be changed.\n * @type Boolean\n * @default\n */\n interactive: true,\n\n /**\n * Indicates whether group selection should be enabled\n * @type Boolean\n * @default\n */\n selection: true,\n\n /**\n * Indicates which key or keys enable multiple click selection\n * Pass value as a string or array of strings\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * If `null` or empty or containing any other string that is not a modifier key\n * feature is disabled.\n * @since 1.6.2\n * @type String|Array\n * @default\n */\n selectionKey: 'shiftKey',\n\n /**\n * Indicates which key enable alternative selection\n * in case of target overlapping with active object\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * For a series of reason that come from the general expectations on how\n * things should work, this feature works only for preserveObjectStacking true.\n * If `null` or 'none' or any other string that is not a modifier key\n * feature is disabled.\n * @since 1.6.5\n * @type null|String\n * @default\n */\n altSelectionKey: null,\n\n /**\n * Color of selection\n * @type String\n * @default\n */\n selectionColor: 'rgba(100, 100, 255, 0.3)', // blue\n\n /**\n * Default dash array pattern\n * If not empty the selection border is dashed\n * @type Array\n */\n selectionDashArray: [],\n\n /**\n * Color of the border of selection (usually slightly darker than color of selection itself)\n * @type String\n * @default\n */\n selectionBorderColor: 'rgba(255, 255, 255, 0.3)',\n\n /**\n * Width of a line used in object/group selection\n * @type Number\n * @default\n */\n selectionLineWidth: 1,\n\n /**\n * Select only shapes that are fully contained in the dragged selection rectangle.\n * @type Boolean\n * @default\n */\n selectionFullyContained: false,\n\n /**\n * Default cursor value used when hovering over an object on canvas\n * @type String\n * @default\n */\n hoverCursor: 'move',\n\n /**\n * Default cursor value used when moving an object on canvas\n * @type String\n * @default\n */\n moveCursor: 'move',\n\n /**\n * Default cursor value used for the entire canvas\n * @type String\n * @default\n */\n defaultCursor: 'default',\n\n /**\n * Cursor value used during free drawing\n * @type String\n * @default\n */\n freeDrawingCursor: 'crosshair',\n\n /**\n * Cursor value used for disabled elements ( corners with disabled action )\n * @type String\n * @since 2.0.0\n * @default\n */\n notAllowedCursor: 'not-allowed',\n\n /**\n * Default element class that's given to wrapper (div) element of canvas\n * @type String\n * @default\n */\n containerClass: 'canvas-container',\n\n /**\n * When true, object detection happens on per-pixel basis rather than on per-bounding-box\n * @type Boolean\n * @default\n */\n perPixelTargetFind: false,\n\n /**\n * Number of pixels around target pixel to tolerate (consider active) during object detection\n * @type Number\n * @default\n */\n targetFindTolerance: 0,\n\n /**\n * When true, target detection is skipped. Target detection will return always undefined.\n * click selection won't work anymore, events will fire with no targets.\n * if something is selected before setting it to true, it will be deselected at the first click.\n * area selection will still work. check the `selection` property too.\n * if you deactivate both, you should look into staticCanvas.\n * @type Boolean\n * @default\n */\n skipTargetFind: false,\n\n /**\n * When true, mouse events on canvas (mousedown/mousemove/mouseup) result in free drawing.\n * After mousedown, mousemove creates a shape,\n * and then mouseup finalizes it and adds an instance of `fabric.Path` onto canvas.\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-4#free_drawing}\n * @type Boolean\n * @default\n */\n isDrawingMode: false,\n\n /**\n * Indicates whether objects should remain in current stack position when selected.\n * When false objects are brought to top and rendered as part of the selection group\n * @type Boolean\n * @default\n */\n preserveObjectStacking: false,\n\n /**\n * Indicates the angle that an object will lock to while rotating.\n * @type Number\n * @since 1.6.7\n * @default\n */\n snapAngle: 0,\n\n /**\n * Indicates the distance from the snapAngle the rotation will lock to the snapAngle.\n * When `null`, the snapThreshold will default to the snapAngle.\n * @type null|Number\n * @since 1.6.7\n * @default\n */\n snapThreshold: null,\n\n /**\n * Indicates if the right click on canvas can output the context menu or not\n * @type Boolean\n * @since 1.6.5\n * @default\n */\n stopContextMenu: false,\n\n /**\n * Indicates if the canvas can fire right click events\n * @type Boolean\n * @since 1.6.5\n * @default\n */\n fireRightClick: false,\n\n /**\n * Indicates if the canvas can fire middle click events\n * @type Boolean\n * @since 1.7.8\n * @default\n */\n fireMiddleClick: false,\n\n /**\n * Keep track of the subTargets for Mouse Events\n * @type fabric.Object[]\n */\n targets: [],\n\n /**\n * When the option is enabled, PointerEvent is used instead of MouseEvent.\n * @type Boolean\n * @default\n */\n enablePointerEvents: false,\n\n /**\n * Keep track of the hovered target\n * @type fabric.Object\n * @private\n */\n _hoveredTarget: null,\n\n /**\n * hold the list of nested targets hovered\n * @type fabric.Object[]\n * @private\n */\n _hoveredTargets: [],\n\n /**\n * hold the list of objects to render\n * @type fabric.Object[]\n * @private\n */\n _objectsToRender: undefined,\n\n /**\n * @private\n */\n _initInteractive: function () {\n this._currentTransform = null;\n this._groupSelector = null;\n this._initWrapperElement();\n this._createUpperCanvas();\n this._initEventListeners();\n\n this._initRetinaScaling();\n\n this.freeDrawingBrush =\n fabric.PencilBrush && new fabric.PencilBrush(this);\n\n this.calcOffset();\n },\n\n /**\n * @private\n * @param {fabric.Object} obj Object that was added\n */\n _onObjectAdded: function (obj) {\n this._objectsToRender = undefined;\n this.callSuper('_onObjectAdded', obj);\n },\n\n /**\n * @private\n * @param {fabric.Object} obj Object that was removed\n */\n _onObjectRemoved: function (obj) {\n this._objectsToRender = undefined;\n // removing active object should fire \"selection:cleared\" events\n if (obj === this._activeObject) {\n this.fire('before:selection:cleared', { target: obj });\n this._discardActiveObject();\n this.fire('selection:cleared', { target: obj });\n obj.fire('deselected');\n }\n if (obj === this._hoveredTarget) {\n this._hoveredTarget = null;\n this._hoveredTargets = [];\n }\n this.callSuper('_onObjectRemoved', obj);\n },\n\n /**\n * Divides objects in two groups, one to render immediately\n * and one to render as activeGroup.\n * @return {Array} objects to render immediately and pushes the other in the activeGroup.\n */\n _chooseObjectsToRender: function () {\n var activeObjects = this.getActiveObjects(),\n object,\n objsToRender,\n activeGroupObjects;\n\n if (!this.preserveObjectStacking && activeObjects.length > 1) {\n objsToRender = [];\n activeGroupObjects = [];\n for (var i = 0, length = this._objects.length; i < length; i++) {\n object = this._objects[i];\n if (activeObjects.indexOf(object) === -1) {\n objsToRender.push(object);\n } else {\n activeGroupObjects.push(object);\n }\n }\n if (activeObjects.length > 1) {\n this._activeObject._objects = activeGroupObjects;\n }\n objsToRender.push.apply(objsToRender, activeGroupObjects);\n }\n // in case a single object is selected render it's entire parent above the other objects\n else if (!this.preserveObjectStacking && activeObjects.length === 1) {\n var target = activeObjects[0],\n ancestors = target.getAncestors(true);\n var topAncestor = ancestors.length === 0 ? target : ancestors.pop();\n objsToRender = this._objects.slice();\n var index = objsToRender.indexOf(topAncestor);\n index > -1 &&\n objsToRender.splice(objsToRender.indexOf(topAncestor), 1);\n objsToRender.push(topAncestor);\n } else {\n objsToRender = this._objects;\n }\n return objsToRender;\n },\n\n /**\n * Renders both the top canvas and the secondary container canvas.\n * @return {fabric.Canvas} instance\n * @chainable\n */\n renderAll: function () {\n this.cancelRequestedRender();\n if (this.destroyed) {\n return;\n }\n if (\n this.contextTopDirty &&\n !this._groupSelector &&\n !this.isDrawingMode\n ) {\n this.clearContext(this.contextTop);\n this.contextTopDirty = false;\n }\n if (this.hasLostContext) {\n this.renderTopLayer(this.contextTop);\n this.hasLostContext = false;\n }\n !this._objectsToRender &&\n (this._objectsToRender = this._chooseObjectsToRender());\n this.renderCanvas(this.contextContainer, this._objectsToRender);\n return this;\n },\n\n renderTopLayer: function (ctx) {\n ctx.save();\n if (this.isDrawingMode && this._isCurrentlyDrawing) {\n this.freeDrawingBrush && this.freeDrawingBrush._render();\n this.contextTopDirty = true;\n }\n // we render the top context - last object\n if (this.selection && this._groupSelector) {\n this._drawSelection(ctx);\n this.contextTopDirty = true;\n }\n ctx.restore();\n },\n\n /**\n * Method to render only the top canvas.\n * Also used to render the group selection box.\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n renderTop: function () {\n var ctx = this.contextTop;\n this.clearContext(ctx);\n this.renderTopLayer(ctx);\n this.fire('after:render');\n return this;\n },\n\n /**\n * @private\n */\n _normalizePointer: function (object, pointer) {\n var m = object.calcTransformMatrix(),\n invertedM = fabric.util.invertTransform(m),\n vptPointer = this.restorePointerVpt(pointer);\n return fabric.util.transformPoint(vptPointer, invertedM);\n },\n\n /**\n * Returns true if object is transparent at a certain location\n * @param {fabric.Object} target Object to check\n * @param {Number} x Left coordinate\n * @param {Number} y Top coordinate\n * @return {Boolean}\n */\n isTargetTransparent: function (target, x, y) {\n // in case the target is the activeObject, we cannot execute this optimization\n // because we need to draw controls too.\n if (\n target.shouldCache() &&\n target._cacheCanvas &&\n target !== this._activeObject\n ) {\n var normalizedPointer = this._normalizePointer(target, {\n x: x,\n y: y,\n }),\n targetRelativeX = Math.max(\n target.cacheTranslationX + normalizedPointer.x * target.zoomX,\n 0\n ),\n targetRelativeY = Math.max(\n target.cacheTranslationY + normalizedPointer.y * target.zoomY,\n 0\n );\n\n var isTransparent = fabric.util.isTransparent(\n target._cacheContext,\n Math.round(targetRelativeX),\n Math.round(targetRelativeY),\n this.targetFindTolerance\n );\n\n return isTransparent;\n }\n\n var ctx = this.contextCache,\n originalColor = target.selectionBackgroundColor,\n v = this.viewportTransform;\n\n target.selectionBackgroundColor = '';\n\n this.clearContext(ctx);\n\n ctx.save();\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n target.render(ctx);\n ctx.restore();\n\n target.selectionBackgroundColor = originalColor;\n\n var isTransparent = fabric.util.isTransparent(\n ctx,\n x,\n y,\n this.targetFindTolerance\n );\n\n return isTransparent;\n },\n\n /**\n * takes an event and determines if selection key has been pressed\n * @private\n * @param {Event} e Event object\n */\n _isSelectionKeyPressed: function (e) {\n var selectionKeyPressed = false;\n\n if (Array.isArray(this.selectionKey)) {\n selectionKeyPressed = !!this.selectionKey.find(function (key) {\n return e[key] === true;\n });\n } else {\n selectionKeyPressed = e[this.selectionKey];\n }\n\n return selectionKeyPressed;\n },\n\n /**\n * @private\n * @param {Event} e Event object\n * @param {fabric.Object} target\n */\n _shouldClearSelection: function (e, target) {\n var activeObjects = this.getActiveObjects(),\n activeObject = this._activeObject;\n\n return (\n !target ||\n (target &&\n activeObject &&\n activeObjects.length > 1 &&\n activeObjects.indexOf(target) === -1 &&\n activeObject !== target &&\n !this._isSelectionKeyPressed(e)) ||\n (target && !target.evented) ||\n (target &&\n !target.selectable &&\n activeObject &&\n activeObject !== target)\n );\n },\n\n /**\n * centeredScaling from object can't override centeredScaling from canvas.\n * this should be fixed, since object setting should take precedence over canvas.\n * also this should be something that will be migrated in the control properties.\n * as ability to define the origin of the transformation that the control provide.\n * @private\n * @param {fabric.Object} target\n * @param {String} action\n * @param {Boolean} altKey\n */\n _shouldCenterTransform: function (target, action, altKey) {\n if (!target) {\n return;\n }\n\n var centerTransform;\n\n if (\n action === 'scale' ||\n action === 'scaleX' ||\n action === 'scaleY' ||\n action === 'resizing'\n ) {\n centerTransform = this.centeredScaling || target.centeredScaling;\n } else if (action === 'rotate') {\n centerTransform = this.centeredRotation || target.centeredRotation;\n }\n\n return centerTransform ? !altKey : altKey;\n },\n\n /**\n * should disappear before release 4.0\n * @private\n */\n _getOriginFromCorner: function (target, corner) {\n var origin = {\n x: target.originX,\n y: target.originY,\n };\n\n if (corner === 'ml' || corner === 'tl' || corner === 'bl') {\n origin.x = 'right';\n } else if (corner === 'mr' || corner === 'tr' || corner === 'br') {\n origin.x = 'left';\n }\n\n if (corner === 'tl' || corner === 'mt' || corner === 'tr') {\n origin.y = 'bottom';\n } else if (corner === 'bl' || corner === 'mb' || corner === 'br') {\n origin.y = 'top';\n }\n return origin;\n },\n\n /**\n * @private\n * @param {Boolean} alreadySelected true if target is already selected\n * @param {String} corner a string representing the corner ml, mr, tl ...\n * @param {Event} e Event object\n * @param {fabric.Object} [target] inserted back to help overriding. Unused\n */\n _getActionFromCorner: function (alreadySelected, corner, e, target) {\n if (!corner || !alreadySelected) {\n return 'drag';\n }\n var control = target.controls[corner];\n return control.getActionName(e, control, target);\n },\n\n /**\n * @private\n * @param {Event} e Event object\n * @param {fabric.Object} target\n */\n _setupCurrentTransform: function (e, target, alreadySelected) {\n if (!target) {\n return;\n }\n var pointer = this.getPointer(e);\n if (target.group) {\n // transform pointer to target's containing coordinate plane\n pointer = fabric.util.transformPoint(\n pointer,\n fabric.util.invertTransform(target.group.calcTransformMatrix())\n );\n }\n var corner = target.__corner,\n control = target.controls[corner],\n actionHandler =\n alreadySelected && corner\n ? control.getActionHandler(e, target, control)\n : fabric.controlsUtils.dragHandler,\n action = this._getActionFromCorner(\n alreadySelected,\n corner,\n e,\n target\n ),\n origin = this._getOriginFromCorner(target, corner),\n altKey = e[this.centeredKey],\n /**\n * relative to target's containing coordinate plane\n * both agree on every point\n **/\n transform = {\n target: target,\n action: action,\n actionHandler: actionHandler,\n corner: corner,\n scaleX: target.scaleX,\n scaleY: target.scaleY,\n skewX: target.skewX,\n skewY: target.skewY,\n offsetX: pointer.x - target.left,\n offsetY: pointer.y - target.top,\n originX: origin.x,\n originY: origin.y,\n ex: pointer.x,\n ey: pointer.y,\n lastX: pointer.x,\n lastY: pointer.y,\n theta: degreesToRadians(target.angle),\n width: target.width * target.scaleX,\n shiftKey: e.shiftKey,\n altKey: altKey,\n original: fabric.util.saveObjectTransform(target),\n };\n\n if (this._shouldCenterTransform(target, action, altKey)) {\n transform.originX = 'center';\n transform.originY = 'center';\n }\n transform.original.originX = origin.x;\n transform.original.originY = origin.y;\n this._currentTransform = transform;\n this._beforeTransform(e);\n },\n\n /**\n * Set the cursor type of the canvas element\n * @param {String} value Cursor type of the canvas element.\n * @see http://www.w3.org/TR/css3-ui/#cursor\n */\n setCursor: function (value) {\n this.upperCanvasEl.style.cursor = value;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx to draw the selection on\n */\n _drawSelection: function (ctx) {\n var selector = this._groupSelector,\n viewportStart = new Point(selector.ex, selector.ey),\n start = fabric.util.transformPoint(\n viewportStart,\n this.viewportTransform\n ),\n viewportExtent = new Point(\n selector.ex + selector.left,\n selector.ey + selector.top\n ),\n extent = fabric.util.transformPoint(\n viewportExtent,\n this.viewportTransform\n ),\n minX = Math.min(start.x, extent.x),\n minY = Math.min(start.y, extent.y),\n maxX = Math.max(start.x, extent.x),\n maxY = Math.max(start.y, extent.y),\n strokeOffset = this.selectionLineWidth / 2;\n\n if (this.selectionColor) {\n ctx.fillStyle = this.selectionColor;\n ctx.fillRect(minX, minY, maxX - minX, maxY - minY);\n }\n\n if (!this.selectionLineWidth || !this.selectionBorderColor) {\n return;\n }\n ctx.lineWidth = this.selectionLineWidth;\n ctx.strokeStyle = this.selectionBorderColor;\n\n minX += strokeOffset;\n minY += strokeOffset;\n maxX -= strokeOffset;\n maxY -= strokeOffset;\n // selection border\n fabric.Object.prototype._setLineDash.call(\n this,\n ctx,\n this.selectionDashArray\n );\n ctx.strokeRect(minX, minY, maxX - minX, maxY - minY);\n },\n\n /**\n * Method that determines what object we are clicking on\n * the skipGroup parameter is for internal use, is needed for shift+click action\n * 11/09/2018 TODO: would be cool if findTarget could discern between being a full target\n * or the outside part of the corner.\n * @param {Event} e mouse event\n * @param {Boolean} skipGroup when true, activeGroup is skipped and only objects are traversed through\n * @return {fabric.Object} the target found\n */\n findTarget: function (e, skipGroup) {\n if (this.skipTargetFind) {\n return;\n }\n\n var ignoreZoom = true,\n pointer = this.getPointer(e, ignoreZoom),\n activeObject = this._activeObject,\n aObjects = this.getActiveObjects(),\n activeTarget,\n activeTargetSubs,\n isTouch = isTouchEvent(e),\n shouldLookForActive =\n (aObjects.length > 1 && !skipGroup) || aObjects.length === 1;\n\n // first check current group (if one exists)\n // active group does not check sub targets like normal groups.\n // if active group just exits.\n this.targets = [];\n\n // if we hit the corner of an activeObject, let's return that.\n if (\n shouldLookForActive &&\n activeObject._findTargetCorner(pointer, isTouch)\n ) {\n return activeObject;\n }\n if (\n aObjects.length > 1 &&\n activeObject.type === 'activeSelection' &&\n !skipGroup &&\n this.searchPossibleTargets([activeObject], pointer)\n ) {\n return activeObject;\n }\n if (\n aObjects.length === 1 &&\n activeObject === this.searchPossibleTargets([activeObject], pointer)\n ) {\n if (!this.preserveObjectStacking) {\n return activeObject;\n } else {\n activeTarget = activeObject;\n activeTargetSubs = this.targets;\n this.targets = [];\n }\n }\n var target = this.searchPossibleTargets(this._objects, pointer);\n if (\n e[this.altSelectionKey] &&\n target &&\n activeTarget &&\n target !== activeTarget\n ) {\n target = activeTarget;\n this.targets = activeTargetSubs;\n }\n return target;\n },\n\n /**\n * Checks point is inside the object.\n * @param {Object} [pointer] x,y object of point coordinates we want to check.\n * @param {fabric.Object} obj Object to test against\n * @param {Object} [globalPointer] x,y object of point coordinates relative to canvas used to search per pixel target.\n * @return {Boolean} true if point is contained within an area of given object\n * @private\n */\n _checkTarget: function (pointer, obj, globalPointer) {\n if (\n obj &&\n obj.visible &&\n obj.evented &&\n // http://www.geog.ubc.ca/courses/klink/gis.notes/ncgia/u32.html\n // http://idav.ucdavis.edu/~okreylos/TAship/Spring2000/PointInPolygon.html\n obj.containsPoint(pointer)\n ) {\n if (\n (this.perPixelTargetFind || obj.perPixelTargetFind) &&\n !obj.isEditing\n ) {\n var isTransparent = this.isTargetTransparent(\n obj,\n globalPointer.x,\n globalPointer.y\n );\n if (!isTransparent) {\n return true;\n }\n } else {\n return true;\n }\n }\n },\n\n /**\n * Internal Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted\n * @param {Array} [objects] objects array to look into\n * @param {Object} [pointer] x,y object of point coordinates we want to check.\n * @return {fabric.Object} **top most object from given `objects`** that contains pointer\n * @private\n */\n _searchPossibleTargets: function (objects, pointer) {\n // Cache all targets where their bounding box contains point.\n var target,\n i = objects.length,\n subTarget;\n // Do not check for currently grouped objects, since we check the parent group itself.\n // until we call this function specifically to search inside the activeGroup\n while (i--) {\n var objToCheck = objects[i];\n var pointerToUse = objToCheck.group\n ? this._normalizePointer(objToCheck.group, pointer)\n : pointer;\n if (this._checkTarget(pointerToUse, objToCheck, pointer)) {\n target = objects[i];\n if (target.subTargetCheck && Array.isArray(target._objects)) {\n subTarget = this._searchPossibleTargets(target._objects, pointer);\n subTarget && this.targets.push(subTarget);\n }\n break;\n }\n }\n return target;\n },\n\n /**\n * Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted\n * @see {@link fabric.Canvas#_searchPossibleTargets}\n * @param {Array} [objects] objects array to look into\n * @param {Object} [pointer] x,y object of point coordinates we want to check.\n * @return {fabric.Object} **top most object on screen** that contains pointer\n */\n searchPossibleTargets: function (objects, pointer) {\n var target = this._searchPossibleTargets(objects, pointer);\n return target && target.interactive && this.targets[0]\n ? this.targets[0]\n : target;\n },\n\n /**\n * Returns pointer coordinates without the effect of the viewport\n * @param {Object} pointer with \"x\" and \"y\" number values\n * @return {Object} object with \"x\" and \"y\" number values\n */\n restorePointerVpt: function (pointer) {\n return fabric.util.transformPoint(\n pointer,\n fabric.util.invertTransform(this.viewportTransform)\n );\n },\n\n /**\n * Returns pointer coordinates relative to canvas.\n * Can return coordinates with or without viewportTransform.\n * ignoreVpt false gives back coordinates that represent\n * the point clicked on canvas element.\n * ignoreVpt true gives back coordinates after being processed\n * by the viewportTransform ( sort of coordinates of what is displayed\n * on the canvas where you are clicking.\n * ignoreVpt true = HTMLElement coordinates relative to top,left\n * ignoreVpt false, default = fabric space coordinates, the same used for shape position\n * To interact with your shapes top and left you want to use ignoreVpt true\n * most of the time, while ignoreVpt false will give you coordinates\n * compatible with the object.oCoords system.\n * of the time.\n * @param {Event} e\n * @param {Boolean} ignoreVpt\n * @return {Point}\n */\n getPointer: function (e, ignoreVpt) {\n // return cached values if we are in the event processing chain\n if (this._absolutePointer && !ignoreVpt) {\n return this._absolutePointer;\n }\n if (this._pointer && ignoreVpt) {\n return this._pointer;\n }\n\n var pointer = getPointer(e),\n upperCanvasEl = this.upperCanvasEl,\n bounds = upperCanvasEl.getBoundingClientRect(),\n boundsWidth = bounds.width || 0,\n boundsHeight = bounds.height || 0,\n cssScale;\n\n if (!boundsWidth || !boundsHeight) {\n if ('top' in bounds && 'bottom' in bounds) {\n boundsHeight = Math.abs(bounds.top - bounds.bottom);\n }\n if ('right' in bounds && 'left' in bounds) {\n boundsWidth = Math.abs(bounds.right - bounds.left);\n }\n }\n\n this.calcOffset();\n pointer.x = pointer.x - this._offset.left;\n pointer.y = pointer.y - this._offset.top;\n if (!ignoreVpt) {\n pointer = this.restorePointerVpt(pointer);\n }\n\n var retinaScaling = this.getRetinaScaling();\n if (retinaScaling !== 1) {\n pointer.x /= retinaScaling;\n pointer.y /= retinaScaling;\n }\n\n // If bounds are not available (i.e. not visible), do not apply scale.\n cssScale =\n boundsWidth === 0 || boundsHeight === 0\n ? new Point(1, 1)\n : new Point(\n upperCanvasEl.width / boundsWidth,\n upperCanvasEl.height / boundsHeight\n );\n\n return new Point(pointer.x * cssScale.x, pointer.y * cssScale.y);\n },\n\n /**\n * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em)\n * @param {Object} dimensions Object with width/height properties\n * @param {Number|String} [dimensions.width] Width of canvas element\n * @param {Number|String} [dimensions.height] Height of canvas element\n * @param {Object} [options] Options object\n * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions\n * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n setDimensions: function (dimensions, options) {\n this._resetTransformEventData();\n return this.callSuper('setDimensions', dimensions, options);\n },\n\n /**\n * @private\n * @throws {CANVAS_INIT_ERROR} If canvas can not be initialized\n */\n _createUpperCanvas: function () {\n var lowerCanvasEl = this.lowerCanvasEl,\n upperCanvasEl = this.upperCanvasEl;\n\n // if there is no upperCanvas (most common case) we create one.\n if (!upperCanvasEl) {\n upperCanvasEl = this._createCanvasElement();\n this.upperCanvasEl = upperCanvasEl;\n }\n // we assign the same classname of the lowerCanvas\n upperCanvasEl.className = lowerCanvasEl.className;\n // but then we remove the lower-canvas specific className\n upperCanvasEl.classList.remove('lower-canvas');\n // we add the specific upper-canvas class\n upperCanvasEl.classList.add('upper-canvas');\n upperCanvasEl.setAttribute('data-fabric', 'top');\n this.wrapperEl.appendChild(upperCanvasEl);\n\n this._copyCanvasStyle(lowerCanvasEl, upperCanvasEl);\n this._applyCanvasStyle(upperCanvasEl);\n upperCanvasEl.setAttribute('draggable', 'true');\n this.contextTop = upperCanvasEl.getContext('2d');\n },\n\n /**\n * @private\n */\n _createCacheCanvas: function () {\n this.cacheCanvasEl = this._createCanvasElement();\n this.cacheCanvasEl.setAttribute('width', this.width);\n this.cacheCanvasEl.setAttribute('height', this.height);\n this.contextCache = this.cacheCanvasEl.getContext('2d');\n },\n\n /**\n * @private\n */\n _initWrapperElement: function () {\n if (this.wrapperEl) {\n return;\n }\n const container = fabric.document.createElement('div');\n container.classList.add(this.containerClass);\n this.wrapperEl = fabric.util.wrapElement(this.lowerCanvasEl, container);\n this.wrapperEl.setAttribute('data-fabric', 'wrapper');\n fabric.util.setStyle(this.wrapperEl, {\n width: this.width + 'px',\n height: this.height + 'px',\n position: 'relative',\n });\n fabric.util.makeElementUnselectable(this.wrapperEl);\n },\n\n /**\n * @private\n * @param {HTMLElement} element canvas element to apply styles on\n */\n _applyCanvasStyle: function (element) {\n var width = this.width || element.width,\n height = this.height || element.height;\n\n fabric.util.setStyle(element, {\n position: 'absolute',\n width: width + 'px',\n height: height + 'px',\n left: 0,\n top: 0,\n 'touch-action': this.allowTouchScrolling ? 'manipulation' : 'none',\n '-ms-touch-action': this.allowTouchScrolling\n ? 'manipulation'\n : 'none',\n });\n element.width = width;\n element.height = height;\n fabric.util.makeElementUnselectable(element);\n },\n\n /**\n * Copy the entire inline style from one element (fromEl) to another (toEl)\n * @private\n * @param {Element} fromEl Element style is copied from\n * @param {Element} toEl Element copied style is applied to\n */\n _copyCanvasStyle: function (fromEl, toEl) {\n toEl.style.cssText = fromEl.style.cssText;\n },\n\n /**\n * Returns context of top canvas where interactions are drawn\n * @returns {CanvasRenderingContext2D}\n */\n getTopContext: function () {\n return this.contextTop;\n },\n\n /**\n * Returns context of canvas where object selection is drawn\n * @alias\n * @return {CanvasRenderingContext2D}\n */\n getSelectionContext: function () {\n return this.contextTop;\n },\n\n /**\n * Returns <canvas> element on which object selection is drawn\n * @return {HTMLCanvasElement}\n */\n getSelectionElement: function () {\n return this.upperCanvasEl;\n },\n\n /**\n * Returns currently active object\n * @return {fabric.Object} active object\n */\n getActiveObject: function () {\n return this._activeObject;\n },\n\n /**\n * Returns an array with the current selected objects\n * @return {fabric.Object} active object\n */\n getActiveObjects: function () {\n var active = this._activeObject;\n if (active) {\n if (active.type === 'activeSelection' && active._objects) {\n return active._objects.slice(0);\n } else {\n return [active];\n }\n }\n return [];\n },\n\n /**\n * @private\n * Compares the old activeObject with the current one and fires correct events\n * @param {fabric.Object} obj old activeObject\n */\n _fireSelectionEvents: function (oldObjects, e) {\n var somethingChanged = false,\n objects = this.getActiveObjects(),\n added = [],\n removed = [],\n invalidate = false;\n oldObjects.forEach(function (oldObject) {\n if (objects.indexOf(oldObject) === -1) {\n somethingChanged = true;\n oldObject.fire('deselected', {\n e: e,\n target: oldObject,\n });\n removed.push(oldObject);\n }\n });\n objects.forEach(function (object) {\n if (oldObjects.indexOf(object) === -1) {\n somethingChanged = true;\n object.fire('selected', {\n e: e,\n target: object,\n });\n added.push(object);\n }\n });\n if (oldObjects.length > 0 && objects.length > 0) {\n invalidate = true;\n somethingChanged &&\n this.fire('selection:updated', {\n e: e,\n selected: added,\n deselected: removed,\n });\n } else if (objects.length > 0) {\n invalidate = true;\n this.fire('selection:created', {\n e: e,\n selected: added,\n });\n } else if (oldObjects.length > 0) {\n invalidate = true;\n this.fire('selection:cleared', {\n e: e,\n deselected: removed,\n });\n }\n invalidate && (this._objectsToRender = undefined);\n },\n\n /**\n * Sets given object as the only active object on canvas\n * @param {fabric.Object} object Object to set as an active one\n * @param {Event} [e] Event (passed along when firing \"object:selected\")\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n setActiveObject: function (object, e) {\n var currentActives = this.getActiveObjects();\n this._setActiveObject(object, e);\n this._fireSelectionEvents(currentActives, e);\n return this;\n },\n\n /**\n * This is a private method for now.\n * This is supposed to be equivalent to setActiveObject but without firing\n * any event. There is commitment to have this stay this way.\n * This is the functional part of setActiveObject.\n * @private\n * @param {Object} object to set as active\n * @param {Event} [e] Event (passed along when firing \"object:selected\")\n * @return {Boolean} true if the selection happened\n */\n _setActiveObject: function (object, e) {\n if (this._activeObject === object) {\n return false;\n }\n if (!this._discardActiveObject(e, object)) {\n return false;\n }\n if (object.onSelect({ e: e })) {\n return false;\n }\n this._activeObject = object;\n return true;\n },\n\n /**\n * This is a private method for now.\n * This is supposed to be equivalent to discardActiveObject but without firing\n * any selection events ( can still fire object transformation events ). There is commitment to have this stay this way.\n * This is the functional part of discardActiveObject.\n * @param {Event} [e] Event (passed along when firing \"object:deselected\")\n * @param {Object} object to set as active\n * @return {Boolean} true if the selection happened\n * @private\n */\n _discardActiveObject: function (e, object) {\n var obj = this._activeObject;\n if (obj) {\n // onDeselect return TRUE to cancel selection;\n if (obj.onDeselect({ e: e, object: object })) {\n return false;\n }\n if (this._currentTransform && this._currentTransform.target === obj) {\n this.endCurrentTransform(e);\n }\n this._activeObject = null;\n }\n return true;\n },\n\n /**\n * Discards currently active object and fire events. If the function is called by fabric\n * as a consequence of a mouse event, the event is passed as a parameter and\n * sent to the fire function for the custom events. When used as a method the\n * e param does not have any application.\n * @param {event} e\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n discardActiveObject: function (e) {\n var currentActives = this.getActiveObjects(),\n activeObject = this.getActiveObject();\n if (currentActives.length) {\n this.fire('before:selection:cleared', { target: activeObject, e: e });\n }\n this._discardActiveObject(e);\n this._fireSelectionEvents(currentActives, e);\n return this;\n },\n\n /**\n * Clears the canvas element, disposes objects, removes all event listeners and frees resources\n *\n * **CAUTION**:\n *\n * This method is **UNSAFE**.\n * You may encounter a race condition using it if there's a requested render.\n * Call this method only if you are sure rendering has settled.\n * Consider using {@link dispose} as it is **SAFE**\n *\n * @private\n */\n destroy: function () {\n var wrapperEl = this.wrapperEl,\n lowerCanvasEl = this.lowerCanvasEl,\n upperCanvasEl = this.upperCanvasEl,\n cacheCanvasEl = this.cacheCanvasEl;\n this.removeListeners();\n this.callSuper('destroy');\n wrapperEl.removeChild(upperCanvasEl);\n wrapperEl.removeChild(lowerCanvasEl);\n this.contextCache = null;\n this.contextTop = null;\n fabric.util.cleanUpJsdomNode(upperCanvasEl);\n this.upperCanvasEl = undefined;\n fabric.util.cleanUpJsdomNode(cacheCanvasEl);\n this.cacheCanvasEl = undefined;\n if (wrapperEl.parentNode) {\n wrapperEl.parentNode.replaceChild(lowerCanvasEl, wrapperEl);\n }\n delete this.wrapperEl;\n return this;\n },\n\n /**\n * Clears all contexts (background, main, top) of an instance\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n clear: function () {\n // this.discardActiveGroup();\n this.discardActiveObject();\n this.clearContext(this.contextTop);\n return this.callSuper('clear');\n },\n\n /**\n * Draws objects' controls (borders/controls)\n * @param {CanvasRenderingContext2D} ctx Context to render controls on\n */\n drawControls: function (ctx) {\n var activeObject = this._activeObject;\n\n if (activeObject) {\n activeObject._renderControls(ctx);\n }\n },\n\n /**\n * @private\n */\n _toObject: function (instance, methodName, propertiesToInclude) {\n //If the object is part of the current selection group, it should\n //be transformed appropriately\n //i.e. it should be serialised as it would appear if the selection group\n //were to be destroyed.\n var originalProperties = this._realizeGroupTransformOnObject(instance),\n object = this.callSuper(\n '_toObject',\n instance,\n methodName,\n propertiesToInclude\n );\n //Undo the damage we did by changing all of its properties\n originalProperties && instance.set(originalProperties);\n return object;\n },\n\n /**\n * Realises an object's group transformation on it\n * @private\n * @param {fabric.Object} [instance] the object to transform (gets mutated)\n * @returns the original values of instance which were changed\n */\n _realizeGroupTransformOnObject: function (instance) {\n if (\n instance.group &&\n instance.group.type === 'activeSelection' &&\n this._activeObject === instance.group\n ) {\n var layoutProps = [\n 'angle',\n 'flipX',\n 'flipY',\n 'left',\n 'scaleX',\n 'scaleY',\n 'skewX',\n 'skewY',\n 'top',\n ];\n //Copy all the positionally relevant properties across now\n var originalValues = {};\n layoutProps.forEach(function (prop) {\n originalValues[prop] = instance[prop];\n });\n fabric.util.addTransformToObject(\n instance,\n this._activeObject.calcOwnMatrix()\n );\n return originalValues;\n } else {\n return null;\n }\n },\n\n /**\n * @private\n */\n _setSVGObject: function (markup, instance, reviver) {\n //If the object is in a selection group, simulate what would happen to that\n //object when the group is deselected\n var originalProperties = this._realizeGroupTransformOnObject(instance);\n this.callSuper('_setSVGObject', markup, instance, reviver);\n originalProperties && instance.set(originalProperties);\n },\n\n setViewportTransform: function (vpt) {\n if (\n this.renderOnAddRemove &&\n this._activeObject &&\n this._activeObject.isEditing\n ) {\n this._activeObject.clearContextTop();\n }\n fabric.StaticCanvas.prototype.setViewportTransform.call(this, vpt);\n },\n }\n );\n\n // copying static properties manually to work around Opera's bug,\n // where \"prototype\" property is enumerable and overrides existing prototype\n for (var prop in fabric.StaticCanvas) {\n if (prop !== 'prototype') {\n fabric.Canvas[prop] = fabric.StaticCanvas[prop];\n }\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","import { TransformEvent } from '../typedefs';\n\nexport const fireEvent = (eventName: string, options: TransformEvent) => {\n const target = options.transform.target;\n target.canvas?.fire('object:' + eventName, { ...options, target });\n target.fire(eventName, options);\n};\n","//@ts-nocheck\n\nimport { fireEvent } from '../util/fireEvent';\n\n(function (global) {\n var fabric = global.fabric,\n addListener = fabric.util.addListener,\n removeListener = fabric.util.removeListener,\n RIGHT_CLICK = 3,\n MIDDLE_CLICK = 2,\n LEFT_CLICK = 1,\n addEventOptions = { passive: false };\n\n function checkClick(e, value) {\n return e.button && e.button === value - 1;\n }\n\n fabric.util.object.extend(\n fabric.Canvas.prototype,\n /** @lends fabric.Canvas.prototype */ {\n /**\n * Contains the id of the touch event that owns the fabric transform\n * @type Number\n * @private\n */\n mainTouchId: null,\n\n /**\n * Adds mouse listeners to canvas\n * @private\n */\n _initEventListeners: function () {\n // in case we initialized the class twice. This should not happen normally\n // but in some kind of applications where the canvas element may be changed\n // this is a workaround to having double listeners.\n this.removeListeners();\n this._bindEvents();\n this.addOrRemove(addListener, 'add');\n },\n\n /**\n * return an event prefix pointer or mouse.\n * @private\n */\n _getEventPrefix: function () {\n return this.enablePointerEvents ? 'pointer' : 'mouse';\n },\n\n addOrRemove: function (functor, eventjsFunctor) {\n var canvasElement = this.upperCanvasEl,\n eventTypePrefix = this._getEventPrefix();\n functor(fabric.window, 'resize', this._onResize);\n functor(canvasElement, eventTypePrefix + 'down', this._onMouseDown);\n functor(\n canvasElement,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n functor(canvasElement, eventTypePrefix + 'out', this._onMouseOut);\n functor(canvasElement, eventTypePrefix + 'enter', this._onMouseEnter);\n functor(canvasElement, 'wheel', this._onMouseWheel);\n functor(canvasElement, 'contextmenu', this._onContextMenu);\n functor(canvasElement, 'dblclick', this._onDoubleClick);\n functor(canvasElement, 'dragstart', this._onDragStart);\n functor(canvasElement, 'dragend', this._onDragEnd);\n functor(canvasElement, 'dragover', this._onDragOver);\n functor(canvasElement, 'dragenter', this._onDragEnter);\n functor(canvasElement, 'dragleave', this._onDragLeave);\n functor(canvasElement, 'drop', this._onDrop);\n if (!this.enablePointerEvents) {\n functor(\n canvasElement,\n 'touchstart',\n this._onTouchStart,\n addEventOptions\n );\n }\n if (typeof eventjs !== 'undefined' && eventjsFunctor in eventjs) {\n eventjs[eventjsFunctor](canvasElement, 'gesture', this._onGesture);\n eventjs[eventjsFunctor](canvasElement, 'drag', this._onDrag);\n eventjs[eventjsFunctor](\n canvasElement,\n 'orientation',\n this._onOrientationChange\n );\n eventjs[eventjsFunctor](canvasElement, 'shake', this._onShake);\n eventjs[eventjsFunctor](\n canvasElement,\n 'longpress',\n this._onLongPress\n );\n }\n },\n\n /**\n * Removes all event listeners\n */\n removeListeners: function () {\n this.addOrRemove(removeListener, 'remove');\n // if you dispose on a mouseDown, before mouse up, you need to clean document to...\n var eventTypePrefix = this._getEventPrefix();\n removeListener(\n fabric.document,\n eventTypePrefix + 'up',\n this._onMouseUp\n );\n removeListener(\n fabric.document,\n 'touchend',\n this._onTouchEnd,\n addEventOptions\n );\n removeListener(\n fabric.document,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n removeListener(\n fabric.document,\n 'touchmove',\n this._onMouseMove,\n addEventOptions\n );\n },\n\n /**\n * @private\n */\n _bindEvents: function () {\n if (this.eventsBound) {\n // for any reason we pass here twice we do not want to bind events twice.\n return;\n }\n this._onMouseDown = this._onMouseDown.bind(this);\n this._onTouchStart = this._onTouchStart.bind(this);\n this._onMouseMove = this._onMouseMove.bind(this);\n this._onMouseUp = this._onMouseUp.bind(this);\n this._onTouchEnd = this._onTouchEnd.bind(this);\n this._onResize = this._onResize.bind(this);\n this._onGesture = this._onGesture.bind(this);\n this._onDrag = this._onDrag.bind(this);\n this._onShake = this._onShake.bind(this);\n this._onLongPress = this._onLongPress.bind(this);\n this._onOrientationChange = this._onOrientationChange.bind(this);\n this._onMouseWheel = this._onMouseWheel.bind(this);\n this._onMouseOut = this._onMouseOut.bind(this);\n this._onMouseEnter = this._onMouseEnter.bind(this);\n this._onContextMenu = this._onContextMenu.bind(this);\n this._onDoubleClick = this._onDoubleClick.bind(this);\n this._onDragStart = this._onDragStart.bind(this);\n this._onDragEnd = this._onDragEnd.bind(this);\n this._onDragProgress = this._onDragProgress.bind(this);\n this._onDragOver = this._onDragOver.bind(this);\n this._onDragEnter = this._onDragEnter.bind(this);\n this._onDragLeave = this._onDragLeave.bind(this);\n this._onDrop = this._onDrop.bind(this);\n this.eventsBound = true;\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js gesture\n * @param {Event} [self] Inner Event object\n */\n _onGesture: function (e, self) {\n this.__onTransformGesture && this.__onTransformGesture(e, self);\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js drag\n * @param {Event} [self] Inner Event object\n */\n _onDrag: function (e, self) {\n this.__onDrag && this.__onDrag(e, self);\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on wheel event\n */\n _onMouseWheel: function (e) {\n this.__onMouseWheel(e);\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onMouseOut: function (e) {\n var target = this._hoveredTarget;\n this.fire('mouse:out', { target: target, e: e });\n this._hoveredTarget = null;\n target && target.fire('mouseout', { e: e });\n\n this._hoveredTargets.forEach(function (nestedTarget) {\n this.fire('mouse:out', { target: nestedTarget, e: e });\n nestedTarget && nestedTarget.fire('mouseout', { e: e });\n }, this);\n this._hoveredTargets = [];\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mouseenter\n */\n _onMouseEnter: function (e) {\n // This find target and consequent 'mouse:over' is used to\n // clear old instances on hovered target.\n // calling findTarget has the side effect of killing target.__corner.\n // as a short term fix we are not firing this if we are currently transforming.\n // as a long term fix we need to separate the action of finding a target with the\n // side effects we added to it.\n if (!this._currentTransform && !this.findTarget(e)) {\n this.fire('mouse:over', { target: null, e: e });\n this._hoveredTarget = null;\n this._hoveredTargets = [];\n }\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js orientation change\n * @param {Event} [self] Inner Event object\n */\n _onOrientationChange: function (e, self) {\n this.__onOrientationChange && this.__onOrientationChange(e, self);\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n * @param {Event} [self] Inner Event object\n */\n _onShake: function (e, self) {\n this.__onShake && this.__onShake(e, self);\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n * @param {Event} [self] Inner Event object\n */\n _onLongPress: function (e, self) {\n this.__onLongPress && this.__onLongPress(e, self);\n },\n\n /**\n * supports native like text dragging\n * @private\n * @param {DragEvent} e\n */\n _onDragStart: function (e) {\n var activeObject = this.getActiveObject();\n if (\n activeObject &&\n typeof activeObject.onDragStart === 'function' &&\n activeObject.onDragStart(e)\n ) {\n this._dragSource = activeObject;\n var options = { e: e, target: activeObject };\n this.fire('dragstart', options);\n activeObject.fire('dragstart', options);\n addListener(this.upperCanvasEl, 'drag', this._onDragProgress);\n return;\n }\n e.preventDefault();\n e.stopPropagation();\n },\n\n /**\n * @private\n */\n _renderDragEffects: function (e, source, target) {\n var ctx = this.contextTop;\n if (source) {\n source.clearContextTop(true);\n source.renderDragSourceEffect(e);\n }\n if (target) {\n if (target !== source) {\n ctx.restore();\n ctx.save();\n target.clearContextTop(true);\n }\n target.renderDropTargetEffect(e);\n }\n ctx.restore();\n },\n\n /**\n * supports native like text dragging\n * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#finishing_a_drag\n * @private\n * @param {DragEvent} e\n */\n _onDragEnd: function (e) {\n var didDrop = e.dataTransfer.dropEffect !== 'none',\n dropTarget = didDrop ? this._activeObject : undefined,\n options = {\n e: e,\n target: this._dragSource,\n subTargets: this.targets,\n dragSource: this._dragSource,\n didDrop: didDrop,\n dropTarget: dropTarget,\n };\n removeListener(this.upperCanvasEl, 'drag', this._onDragProgress);\n this.fire('dragend', options);\n this._dragSource && this._dragSource.fire('dragend', options);\n delete this._dragSource;\n // we need to call mouse up synthetically because the browser won't\n this._onMouseUp(e);\n },\n\n /**\n * fire `drag` event on canvas and drag source\n * @private\n * @param {DragEvent} e\n */\n _onDragProgress: function (e) {\n var options = {\n e: e,\n dragSource: this._dragSource,\n dropTarget: this._draggedoverTarget,\n };\n this.fire('drag', options);\n this._dragSource && this._dragSource.fire('drag', options);\n },\n\n /**\n * prevent default to allow drop event to be fired\n * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#specifying_drop_targets\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n */\n _onDragOver: function (e) {\n var eventType = 'dragover',\n target = this.findTarget(e),\n targets = this.targets,\n options = {\n e: e,\n target: target,\n subTargets: targets,\n dragSource: this._dragSource,\n canDrop: false,\n dropTarget: undefined,\n },\n dropTarget;\n // fire on canvas\n this.fire(eventType, options);\n // make sure we fire dragenter events before dragover\n // if dragleave is needed, object will not fire dragover so we don't need to trouble ourselves with it\n this._fireEnterLeaveEvents(target, options);\n if (target) {\n // render drag selection before rendering target cursor for correct visuals\n if (target.canDrop(e)) {\n dropTarget = target;\n }\n target.fire(eventType, options);\n }\n // propagate the event to subtargets\n for (var i = 0; i < targets.length; i++) {\n target = targets[i];\n // accept event only if previous targets didn't\n if (!e.defaultPrevented && target.canDrop(e)) {\n dropTarget = target;\n }\n target.fire(eventType, options);\n }\n // render drag effects now that relations between source and target is clear\n this._renderDragEffects(e, this._dragSource, dropTarget);\n },\n\n /**\n * fire `dragleave` on `dragover` targets\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n */\n _onDragEnter: function (e) {\n var target = this.findTarget(e);\n var options = {\n e: e,\n target: target,\n subTargets: this.targets,\n dragSource: this._dragSource,\n };\n this.fire('dragenter', options);\n // fire dragenter on targets\n this._fireEnterLeaveEvents(target, options);\n },\n\n /**\n * fire `dragleave` on `dragover` targets\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n */\n _onDragLeave: function (e) {\n var options = {\n e: e,\n target: this._draggedoverTarget,\n subTargets: this.targets,\n dragSource: this._dragSource,\n };\n this.fire('dragleave', options);\n // fire dragleave on targets\n this._fireEnterLeaveEvents(null, options);\n // clear targets\n this.targets = [];\n this._hoveredTargets = [];\n },\n\n /**\n * `drop:before` is a an event that allows you to schedule logic\n * before the `drop` event. Prefer `drop` event always, but if you need\n * to run some drop-disabling logic on an event, since there is no way\n * to handle event handlers ordering, use `drop:before`\n * @private\n * @param {Event} e\n */\n _onDrop: function (e) {\n var options = this._simpleEventHandler('drop:before', e, {\n dragSource: this._dragSource,\n pointer: this.getPointer(e),\n });\n // will be set by the drop target\n options.didDrop = false;\n // will be set by the drop target, used in case options.target refuses the drop\n options.dropTarget = undefined;\n // fire `drop`\n this._basicEventHandler('drop', options);\n // inform canvas of the drop\n // we do this because canvas was unaware of what happened at the time the `drop` event was fired on it\n // use for side effects\n this.fire('drop:after', options);\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onContextMenu: function (e) {\n var options = this._simpleEventHandler('contextmenu:before', e);\n if (this.stopContextMenu) {\n e.stopPropagation();\n e.preventDefault();\n }\n this._basicEventHandler('contextmenu', options);\n return false;\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onDoubleClick: function (e) {\n this._cacheTransformEventData(e);\n this._handleEvent(e, 'dblclick');\n this._resetTransformEventData();\n },\n\n /**\n * Return a the id of an event.\n * returns either the pointerId or the identifier or 0 for the mouse event\n * @private\n * @param {Event} evt Event object\n */\n getPointerId: function (evt) {\n var changedTouches = evt.changedTouches;\n\n if (changedTouches) {\n return changedTouches[0] && changedTouches[0].identifier;\n }\n\n if (this.enablePointerEvents) {\n return evt.pointerId;\n }\n\n return -1;\n },\n\n /**\n * Determines if an event has the id of the event that is considered main\n * @private\n * @param {evt} event Event object\n */\n _isMainEvent: function (evt) {\n if (evt.isPrimary === true) {\n return true;\n }\n if (evt.isPrimary === false) {\n return false;\n }\n if (evt.type === 'touchend' && evt.touches.length === 0) {\n return true;\n }\n if (evt.changedTouches) {\n return evt.changedTouches[0].identifier === this.mainTouchId;\n }\n return true;\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onTouchStart: function (e) {\n e.preventDefault();\n if (this.mainTouchId === null) {\n this.mainTouchId = this.getPointerId(e);\n }\n this.__onMouseDown(e);\n this._resetTransformEventData();\n var canvasElement = this.upperCanvasEl,\n eventTypePrefix = this._getEventPrefix();\n addListener(\n fabric.document,\n 'touchend',\n this._onTouchEnd,\n addEventOptions\n );\n addListener(\n fabric.document,\n 'touchmove',\n this._onMouseMove,\n addEventOptions\n );\n // Unbind mousedown to prevent double triggers from touch devices\n removeListener(\n canvasElement,\n eventTypePrefix + 'down',\n this._onMouseDown\n );\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onMouseDown: function (e) {\n this.__onMouseDown(e);\n this._resetTransformEventData();\n var canvasElement = this.upperCanvasEl,\n eventTypePrefix = this._getEventPrefix();\n removeListener(\n canvasElement,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n addListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp);\n addListener(\n fabric.document,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onTouchEnd: function (e) {\n if (e.touches.length > 0) {\n // if there are still touches stop here\n return;\n }\n this.__onMouseUp(e);\n this._resetTransformEventData();\n this.mainTouchId = null;\n var eventTypePrefix = this._getEventPrefix();\n removeListener(\n fabric.document,\n 'touchend',\n this._onTouchEnd,\n addEventOptions\n );\n removeListener(\n fabric.document,\n 'touchmove',\n this._onMouseMove,\n addEventOptions\n );\n var _this = this;\n if (this._willAddMouseDown) {\n clearTimeout(this._willAddMouseDown);\n }\n this._willAddMouseDown = setTimeout(function () {\n // Wait 400ms before rebinding mousedown to prevent double triggers\n // from touch devices\n addListener(\n _this.upperCanvasEl,\n eventTypePrefix + 'down',\n _this._onMouseDown\n );\n _this._willAddMouseDown = 0;\n }, 400);\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mouseup\n */\n _onMouseUp: function (e) {\n this.__onMouseUp(e);\n this._resetTransformEventData();\n var canvasElement = this.upperCanvasEl,\n eventTypePrefix = this._getEventPrefix();\n if (this._isMainEvent(e)) {\n removeListener(\n fabric.document,\n eventTypePrefix + 'up',\n this._onMouseUp\n );\n removeListener(\n fabric.document,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n addListener(\n canvasElement,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n }\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousemove\n */\n _onMouseMove: function (e) {\n var activeObject = this.getActiveObject();\n !this.allowTouchScrolling &&\n (!activeObject || !activeObject.__isDragging) &&\n e.preventDefault &&\n e.preventDefault();\n this.__onMouseMove(e);\n },\n\n /**\n * @private\n */\n _onResize: function () {\n this.calcOffset();\n this._resetTransformEventData();\n },\n\n /**\n * Decides whether the canvas should be redrawn in mouseup and mousedown events.\n * @private\n * @param {Object} target\n */\n _shouldRender: function (target) {\n var activeObject = this._activeObject;\n\n if (\n !!activeObject !== !!target ||\n (activeObject && target && activeObject !== target)\n ) {\n // this covers: switch of target, from target to no target, selection of target\n // multiSelection with key and mouse\n return true;\n } else if (activeObject && activeObject.isEditing) {\n // if we mouse up/down over a editing textbox a cursor change,\n // there is no need to re render\n return false;\n }\n return false;\n },\n\n /**\n * Method that defines the actions when mouse is released on canvas.\n * The method resets the currentTransform parameters, store the image corner\n * position in the image object and render the canvas on top.\n * @private\n * @param {Event} e Event object fired on mouseup\n */\n __onMouseUp: function (e) {\n var target,\n transform = this._currentTransform,\n groupSelector = this._groupSelector,\n shouldRender = false,\n isClick =\n !groupSelector ||\n (groupSelector.left === 0 && groupSelector.top === 0);\n this._cacheTransformEventData(e);\n target = this._target;\n this._handleEvent(e, 'up:before');\n // if right/middle click just fire events and return\n // target undefined will make the _handleEvent search the target\n if (checkClick(e, RIGHT_CLICK)) {\n if (this.fireRightClick) {\n this._handleEvent(e, 'up', RIGHT_CLICK, isClick);\n }\n return;\n }\n\n if (checkClick(e, MIDDLE_CLICK)) {\n if (this.fireMiddleClick) {\n this._handleEvent(e, 'up', MIDDLE_CLICK, isClick);\n }\n this._resetTransformEventData();\n return;\n }\n\n if (this.isDrawingMode && this._isCurrentlyDrawing) {\n this._onMouseUpInDrawingMode(e);\n return;\n }\n\n if (!this._isMainEvent(e)) {\n return;\n }\n if (transform) {\n this._finalizeCurrentTransform(e);\n shouldRender = transform.actionPerformed;\n }\n if (!isClick) {\n var targetWasActive = target === this._activeObject;\n this._maybeGroupObjects(e);\n if (!shouldRender) {\n shouldRender =\n this._shouldRender(target) ||\n (!targetWasActive && target === this._activeObject);\n }\n }\n var corner, pointer;\n if (target) {\n corner = target._findTargetCorner(\n this.getPointer(e, true),\n fabric.util.isTouchEvent(e)\n );\n if (\n target.selectable &&\n target !== this._activeObject &&\n target.activeOn === 'up'\n ) {\n this.setActiveObject(target, e);\n shouldRender = true;\n } else {\n var control = target.controls[corner],\n mouseUpHandler =\n control && control.getMouseUpHandler(e, target, control);\n if (mouseUpHandler) {\n pointer = this.getPointer(e);\n mouseUpHandler(e, transform, pointer.x, pointer.y);\n }\n }\n target.isMoving = false;\n }\n // if we are ending up a transform on a different control or a new object\n // fire the original mouse up from the corner that started the transform\n if (\n transform &&\n (transform.target !== target || transform.corner !== corner)\n ) {\n var originalControl =\n transform.target && transform.target.controls[transform.corner],\n originalMouseUpHandler =\n originalControl &&\n originalControl.getMouseUpHandler(e, target, control);\n pointer = pointer || this.getPointer(e);\n originalMouseUpHandler &&\n originalMouseUpHandler(e, transform, pointer.x, pointer.y);\n }\n this._setCursorFromEvent(e, target);\n this._handleEvent(e, 'up', LEFT_CLICK, isClick);\n this._groupSelector = null;\n this._currentTransform = null;\n // reset the target information about which corner is selected\n target && (target.__corner = 0);\n if (shouldRender) {\n this.requestRenderAll();\n } else if (!isClick) {\n this.renderTop();\n }\n },\n\n /**\n * @private\n * Handle event firing for target and subtargets\n * @param {Event} e event from mouse\n * @param {String} eventType event to fire (up, down or move)\n * @param {object} [data] event data overrides\n * @return {object} options\n */\n _simpleEventHandler: function (eventType, e, data) {\n var target = this.findTarget(e),\n subTargets = this.targets || [];\n return this._basicEventHandler(\n eventType,\n Object.assign(\n {},\n {\n e: e,\n target: target,\n subTargets: subTargets,\n },\n data\n )\n );\n },\n\n _basicEventHandler: function (eventType, options) {\n var target = options.target,\n subTargets = options.subTargets;\n this.fire(eventType, options);\n target && target.fire(eventType, options);\n for (var i = 0; i < subTargets.length; i++) {\n subTargets[i].fire(eventType, options);\n }\n return options;\n },\n\n /**\n * @private\n * Handle event firing for target and subtargets\n * @param {Event} e event from mouse\n * @param {String} eventType event to fire (up, down or move)\n * @param {fabric.Object} targetObj receiving event\n * @param {Number} [button] button used in the event 1 = left, 2 = middle, 3 = right\n * @param {Boolean} isClick for left button only, indicates that the mouse up happened without move.\n */\n _handleEvent: function (e, eventType, button, isClick) {\n var target = this._target,\n targets = this.targets || [],\n options = {\n e: e,\n target: target,\n subTargets: targets,\n button: button || LEFT_CLICK,\n isClick: isClick || false,\n pointer: this._pointer,\n absolutePointer: this._absolutePointer,\n transform: this._currentTransform,\n };\n if (eventType === 'up') {\n options.currentTarget = this.findTarget(e);\n options.currentSubTargets = this.targets;\n }\n this.fire('mouse:' + eventType, options);\n target && target.fire('mouse' + eventType, options);\n for (var i = 0; i < targets.length; i++) {\n targets[i].fire('mouse' + eventType, options);\n }\n },\n\n /**\n * End the current transfrom.\n * You don't usually need to call this method unless you are interupting a user initiated transform\n * because of some other event ( a press of key combination, or something that block the user UX )\n * @param {Event} [e] send the mouse event that generate the finalize down, so it can be used in the event\n */\n endCurrentTransform: function (e) {\n var transform = this._currentTransform;\n this._finalizeCurrentTransform(e);\n if (transform && transform.target) {\n // this could probably go inside _finalizeCurrentTransform\n transform.target.isMoving = false;\n }\n this._currentTransform = null;\n },\n\n /**\n * @private\n * @param {Event} e send the mouse event that generate the finalize down, so it can be used in the event\n */\n _finalizeCurrentTransform: function (e) {\n var transform = this._currentTransform,\n target = transform.target,\n options = {\n e: e,\n target: target,\n transform: transform,\n action: transform.action,\n };\n\n if (target._scaling) {\n target._scaling = false;\n }\n\n target.setCoords();\n\n if (\n transform.actionPerformed ||\n (this.stateful && target.hasStateChanged())\n ) {\n this._fire('modified', options);\n }\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onMouseDownInDrawingMode: function (e) {\n this._isCurrentlyDrawing = true;\n if (this.getActiveObject()) {\n this.discardActiveObject(e).requestRenderAll();\n }\n var pointer = this.getPointer(e);\n this.freeDrawingBrush.onMouseDown(pointer, { e: e, pointer: pointer });\n this._handleEvent(e, 'down');\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousemove\n */\n _onMouseMoveInDrawingMode: function (e) {\n if (this._isCurrentlyDrawing) {\n var pointer = this.getPointer(e);\n this.freeDrawingBrush.onMouseMove(pointer, {\n e: e,\n pointer: pointer,\n });\n }\n this.setCursor(this.freeDrawingCursor);\n this._handleEvent(e, 'move');\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mouseup\n */\n _onMouseUpInDrawingMode: function (e) {\n var pointer = this.getPointer(e);\n this._isCurrentlyDrawing = this.freeDrawingBrush.onMouseUp({\n e: e,\n pointer: pointer,\n });\n this._handleEvent(e, 'up');\n },\n\n /**\n * Method that defines the actions when mouse is clicked on canvas.\n * The method inits the currentTransform parameters and renders all the\n * canvas so the current image can be placed on the top canvas and the rest\n * in on the container one.\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n __onMouseDown: function (e) {\n this._cacheTransformEventData(e);\n this._handleEvent(e, 'down:before');\n var target = this._target;\n // if right click just fire events\n if (checkClick(e, RIGHT_CLICK)) {\n if (this.fireRightClick) {\n this._handleEvent(e, 'down', RIGHT_CLICK);\n }\n return;\n }\n\n if (checkClick(e, MIDDLE_CLICK)) {\n if (this.fireMiddleClick) {\n this._handleEvent(e, 'down', MIDDLE_CLICK);\n }\n return;\n }\n\n if (this.isDrawingMode) {\n this._onMouseDownInDrawingMode(e);\n return;\n }\n\n if (!this._isMainEvent(e)) {\n return;\n }\n\n // ignore if some object is being transformed at this moment\n if (this._currentTransform) {\n return;\n }\n\n var pointer = this._pointer;\n // save pointer for check in __onMouseUp event\n this._previousPointer = pointer;\n var shouldRender = this._shouldRender(target),\n shouldGroup = this._shouldGroup(e, target);\n if (this._shouldClearSelection(e, target)) {\n this.discardActiveObject(e);\n } else if (shouldGroup) {\n this._handleGrouping(e, target);\n target = this._activeObject;\n }\n\n if (\n this.selection &&\n (!target ||\n (!target.selectable &&\n !target.isEditing &&\n target !== this._activeObject))\n ) {\n this._groupSelector = {\n ex: this._absolutePointer.x,\n ey: this._absolutePointer.y,\n top: 0,\n left: 0,\n };\n }\n\n if (target) {\n var alreadySelected = target === this._activeObject;\n if (target.selectable && target.activeOn === 'down') {\n this.setActiveObject(target, e);\n }\n var corner = target._findTargetCorner(\n this.getPointer(e, true),\n fabric.util.isTouchEvent(e)\n );\n target.__corner = corner;\n if (target === this._activeObject && (corner || !shouldGroup)) {\n this._setupCurrentTransform(e, target, alreadySelected);\n var control = target.controls[corner],\n pointer = this.getPointer(e),\n mouseDownHandler =\n control && control.getMouseDownHandler(e, target, control);\n if (mouseDownHandler) {\n mouseDownHandler(e, this._currentTransform, pointer.x, pointer.y);\n }\n }\n }\n var invalidate = shouldRender || shouldGroup;\n // we clear `_objectsToRender` in case of a change in order to repopulate it at rendering\n // run before firing the `down` event to give the dev a chance to populate it themselves\n invalidate && (this._objectsToRender = undefined);\n this._handleEvent(e, 'down');\n // we must renderAll so that we update the visuals\n invalidate && this.requestRenderAll();\n },\n\n /**\n * reset cache form common information needed during event processing\n * @private\n */\n _resetTransformEventData: function () {\n this._target = null;\n this._pointer = null;\n this._absolutePointer = null;\n },\n\n /**\n * Cache common information needed during event processing\n * @private\n * @param {Event} e Event object fired on event\n */\n _cacheTransformEventData: function (e) {\n // reset in order to avoid stale caching\n this._resetTransformEventData();\n this._pointer = this.getPointer(e, true);\n this._absolutePointer = this.restorePointerVpt(this._pointer);\n this._target = this._currentTransform\n ? this._currentTransform.target\n : this.findTarget(e) || null;\n },\n\n /**\n * @private\n */\n _beforeTransform: function (e) {\n var t = this._currentTransform;\n this.stateful && t.target.saveState();\n this.fire('before:transform', {\n e: e,\n transform: t,\n });\n },\n\n /**\n * Method that defines the actions when mouse is hovering the canvas.\n * The currentTransform parameter will define whether the user is rotating/scaling/translating\n * an image or neither of them (only hovering). A group selection is also possible and would cancel\n * all any other type of action.\n * In case of an image transformation only the top canvas will be rendered.\n * @private\n * @param {Event} e Event object fired on mousemove\n */\n __onMouseMove: function (e) {\n this._handleEvent(e, 'move:before');\n this._cacheTransformEventData(e);\n var target, pointer;\n\n if (this.isDrawingMode) {\n this._onMouseMoveInDrawingMode(e);\n return;\n }\n\n if (!this._isMainEvent(e)) {\n return;\n }\n\n var groupSelector = this._groupSelector;\n\n // We initially clicked in an empty area, so we draw a box for multiple selection\n if (groupSelector) {\n pointer = this._absolutePointer;\n\n groupSelector.left = pointer.x - groupSelector.ex;\n groupSelector.top = pointer.y - groupSelector.ey;\n\n this.renderTop();\n } else if (!this._currentTransform) {\n target = this.findTarget(e) || null;\n this._setCursorFromEvent(e, target);\n this._fireOverOutEvents(target, e);\n } else {\n this._transformObject(e);\n }\n this._handleEvent(e, 'move');\n this._resetTransformEventData();\n },\n\n /**\n * Manage the mouseout, mouseover events for the fabric object on the canvas\n * @param {Fabric.Object} target the target where the target from the mousemove event\n * @param {Event} e Event object fired on mousemove\n * @private\n */\n _fireOverOutEvents: function (target, e) {\n var _hoveredTarget = this._hoveredTarget,\n _hoveredTargets = this._hoveredTargets,\n targets = this.targets,\n length = Math.max(_hoveredTargets.length, targets.length);\n\n this.fireSyntheticInOutEvents(\n target,\n { e: e },\n {\n oldTarget: _hoveredTarget,\n evtOut: 'mouseout',\n canvasEvtOut: 'mouse:out',\n evtIn: 'mouseover',\n canvasEvtIn: 'mouse:over',\n }\n );\n for (var i = 0; i < length; i++) {\n this.fireSyntheticInOutEvents(\n targets[i],\n { e: e },\n {\n oldTarget: _hoveredTargets[i],\n evtOut: 'mouseout',\n evtIn: 'mouseover',\n }\n );\n }\n this._hoveredTarget = target;\n this._hoveredTargets = this.targets.concat();\n },\n\n /**\n * Manage the dragEnter, dragLeave events for the fabric objects on the canvas\n * @param {Fabric.Object} target the target where the target from the onDrag event\n * @param {Object} data Event object fired on dragover\n * @private\n */\n _fireEnterLeaveEvents: function (target, data) {\n var _draggedoverTarget = this._draggedoverTarget,\n _hoveredTargets = this._hoveredTargets,\n targets = this.targets,\n length = Math.max(_hoveredTargets.length, targets.length);\n\n this.fireSyntheticInOutEvents(target, data, {\n oldTarget: _draggedoverTarget,\n evtOut: 'dragleave',\n evtIn: 'dragenter',\n canvasEvtIn: 'drag:enter',\n canvasEvtOut: 'drag:leave',\n });\n for (var i = 0; i < length; i++) {\n this.fireSyntheticInOutEvents(targets[i], data, {\n oldTarget: _hoveredTargets[i],\n evtOut: 'dragleave',\n evtIn: 'dragenter',\n });\n }\n this._draggedoverTarget = target;\n },\n\n /**\n * Manage the synthetic in/out events for the fabric objects on the canvas\n * @param {Fabric.Object} target the target where the target from the supported events\n * @param {Object} data Event object fired\n * @param {Object} config configuration for the function to work\n * @param {String} config.targetName property on the canvas where the old target is stored\n * @param {String} [config.canvasEvtOut] name of the event to fire at canvas level for out\n * @param {String} config.evtOut name of the event to fire for out\n * @param {String} [config.canvasEvtIn] name of the event to fire at canvas level for in\n * @param {String} config.evtIn name of the event to fire for in\n * @private\n */\n fireSyntheticInOutEvents: function (target, data, config) {\n var inOpt,\n outOpt,\n oldTarget = config.oldTarget,\n outFires,\n inFires,\n targetChanged = oldTarget !== target,\n canvasEvtIn = config.canvasEvtIn,\n canvasEvtOut = config.canvasEvtOut;\n if (targetChanged) {\n inOpt = Object.assign({}, data, {\n target: target,\n previousTarget: oldTarget,\n });\n outOpt = Object.assign({}, data, {\n target: oldTarget,\n nextTarget: target,\n });\n }\n inFires = target && targetChanged;\n outFires = oldTarget && targetChanged;\n if (outFires) {\n canvasEvtOut && this.fire(canvasEvtOut, outOpt);\n oldTarget.fire(config.evtOut, outOpt);\n }\n if (inFires) {\n canvasEvtIn && this.fire(canvasEvtIn, inOpt);\n target.fire(config.evtIn, inOpt);\n }\n },\n\n /**\n * Method that defines actions when an Event Mouse Wheel\n * @param {Event} e Event object fired on mouseup\n */\n __onMouseWheel: function (e) {\n this._cacheTransformEventData(e);\n this._handleEvent(e, 'wheel');\n this._resetTransformEventData();\n },\n\n /**\n * @private\n * @param {Event} e Event fired on mousemove\n */\n _transformObject: function (e) {\n var pointer = this.getPointer(e),\n transform = this._currentTransform,\n target = transform.target,\n // transform pointer to target's containing coordinate plane\n // both pointer and object should agree on every point\n localPointer = target.group\n ? fabric.util.sendPointToPlane(\n pointer,\n undefined,\n target.group.calcTransformMatrix()\n )\n : pointer;\n\n transform.reset = false;\n transform.shiftKey = e.shiftKey;\n transform.altKey = e[this.centeredKey];\n\n this._performTransformAction(e, transform, localPointer);\n transform.actionPerformed && this.requestRenderAll();\n },\n\n /**\n * @private\n */\n _performTransformAction: function (e, transform, pointer) {\n var x = pointer.x,\n y = pointer.y,\n action = transform.action,\n actionPerformed = false,\n actionHandler = transform.actionHandler;\n // this object could be created from the function in the control handlers\n\n if (actionHandler) {\n actionPerformed = actionHandler(e, transform, x, y);\n }\n if (action === 'drag' && actionPerformed) {\n transform.target.isMoving = true;\n this.setCursor(transform.target.moveCursor || this.moveCursor);\n }\n transform.actionPerformed =\n transform.actionPerformed || actionPerformed;\n },\n\n /**\n * @private\n */\n _fire: function (eventName, options) {\n return fireEvent(eventName, options);\n },\n\n /**\n * Sets the cursor depending on where the canvas is being hovered.\n * Note: very buggy in Opera\n * @param {Event} e Event object\n * @param {Object} target Object that the mouse is hovering, if so.\n */\n _setCursorFromEvent: function (e, target) {\n if (!target) {\n this.setCursor(this.defaultCursor);\n return false;\n }\n var hoverCursor = target.hoverCursor || this.hoverCursor,\n activeSelection =\n this._activeObject && this._activeObject.type === 'activeSelection'\n ? this._activeObject\n : null,\n // only show proper corner when group selection is not active\n corner =\n (!activeSelection || !activeSelection.contains(target)) &&\n // here we call findTargetCorner always with undefined for the touch parameter.\n // we assume that if you are using a cursor you do not need to interact with\n // the bigger touch area.\n target._findTargetCorner(this.getPointer(e, true));\n\n if (!corner) {\n if (target.subTargetCheck) {\n // hoverCursor should come from top-most subTarget,\n // so we walk the array backwards\n this.targets\n .concat()\n .reverse()\n .map(function (_target) {\n hoverCursor = _target.hoverCursor || hoverCursor;\n });\n }\n this.setCursor(hoverCursor);\n } else {\n this.setCursor(this.getCornerCursor(corner, target, e));\n }\n },\n\n /**\n * @private\n */\n getCornerCursor: function (corner, target, e) {\n var control = target.controls[corner];\n return control.cursorStyleHandler(e, control, target);\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\n(function (global) {\n var fabric = global.fabric,\n min = Math.min,\n max = Math.max;\n\n fabric.util.object.extend(\n fabric.Canvas.prototype,\n /** @lends fabric.Canvas.prototype */ {\n /**\n * @private\n * @param {Event} e Event object\n * @param {fabric.Object} target\n * @return {Boolean}\n */\n _shouldGroup: function (e, target) {\n var activeObject = this._activeObject;\n // check if an active object exists on canvas and if the user is pressing the `selectionKey` while canvas supports multi selection.\n return (\n !!activeObject &&\n this._isSelectionKeyPressed(e) &&\n this.selection &&\n // on top of that the user also has to hit a target that is selectable.\n !!target &&\n target.selectable &&\n // if all pre-requisite pass, the target is either something different from the current\n // activeObject or if an activeSelection already exists\n // TODO at time of writing why `activeObject.type === 'activeSelection'` matter is unclear.\n // is a very old condition uncertain if still valid.\n (activeObject !== target ||\n activeObject.type === 'activeSelection') &&\n // make sure `activeObject` and `target` aren't ancestors of each other\n !target.isDescendantOf(activeObject) &&\n !activeObject.isDescendantOf(target) &&\n // target accepts selection\n !target.onSelect({ e: e })\n );\n },\n\n /**\n * @private\n * @param {Event} e Event object\n * @param {fabric.Object} target\n */\n _handleGrouping: function (e, target) {\n var activeObject = this._activeObject;\n // avoid multi select when shift click on a corner\n if (activeObject.__corner) {\n return;\n }\n if (target === activeObject) {\n // if it's a group, find target again, using activeGroup objects\n target = this.findTarget(e, true);\n // if even object is not found or we are on activeObjectCorner, bail out\n if (!target || !target.selectable) {\n return;\n }\n }\n if (activeObject && activeObject.type === 'activeSelection') {\n this._updateActiveSelection(target, e);\n } else {\n this._createActiveSelection(target, e);\n }\n },\n\n /**\n * @private\n */\n _updateActiveSelection: function (target, e) {\n var activeSelection = this._activeObject,\n currentActiveObjects = activeSelection._objects.slice(0);\n if (target.group === activeSelection) {\n activeSelection.remove(target);\n this._hoveredTarget = target;\n this._hoveredTargets = this.targets.concat();\n if (activeSelection.size() === 1) {\n // activate last remaining object\n this._setActiveObject(activeSelection.item(0), e);\n }\n } else {\n activeSelection.add(target);\n this._hoveredTarget = activeSelection;\n this._hoveredTargets = this.targets.concat();\n }\n this._fireSelectionEvents(currentActiveObjects, e);\n },\n\n /**\n * @private\n */\n _createActiveSelection: function (target, e) {\n var currentActives = this.getActiveObjects(),\n group = this._createGroup(target);\n this._hoveredTarget = group;\n // ISSUE 4115: should we consider subTargets here?\n // this._hoveredTargets = [];\n // this._hoveredTargets = this.targets.concat();\n this._setActiveObject(group, e);\n this._fireSelectionEvents(currentActives, e);\n },\n\n /**\n * @private\n * @param {Object} target\n * @returns {fabric.ActiveSelection}\n */\n _createGroup: function (target) {\n var activeObject = this._activeObject;\n var groupObjects = target.isInFrontOf(activeObject)\n ? [activeObject, target]\n : [target, activeObject];\n activeObject.isEditing && activeObject.exitEditing();\n // handle case: target is nested\n return new fabric.ActiveSelection(groupObjects, {\n canvas: this,\n });\n },\n\n /**\n * @private\n * @param {Event} e mouse event\n */\n _groupSelectedObjects: function (e) {\n var group = this._collectObjects(e),\n aGroup;\n\n // do not create group for 1 element only\n if (group.length === 1) {\n this.setActiveObject(group[0], e);\n } else if (group.length > 1) {\n aGroup = new fabric.ActiveSelection(group.reverse(), {\n canvas: this,\n });\n this.setActiveObject(aGroup, e);\n }\n },\n\n /**\n * @private\n */\n _collectObjects: function (e) {\n var group = [],\n currentObject,\n x1 = this._groupSelector.ex,\n y1 = this._groupSelector.ey,\n x2 = x1 + this._groupSelector.left,\n y2 = y1 + this._groupSelector.top,\n selectionX1Y1 = new Point(min(x1, x2), min(y1, y2)),\n selectionX2Y2 = new Point(max(x1, x2), max(y1, y2)),\n allowIntersect = !this.selectionFullyContained,\n isClick = x1 === x2 && y1 === y2;\n // we iterate reverse order to collect top first in case of click.\n for (var i = this._objects.length; i--; ) {\n currentObject = this._objects[i];\n\n if (\n !currentObject ||\n !currentObject.selectable ||\n !currentObject.visible\n ) {\n continue;\n }\n\n if (\n (allowIntersect &&\n currentObject.intersectsWithRect(\n selectionX1Y1,\n selectionX2Y2,\n true\n )) ||\n currentObject.isContainedWithinRect(\n selectionX1Y1,\n selectionX2Y2,\n true\n ) ||\n (allowIntersect &&\n currentObject.containsPoint(selectionX1Y1, null, true)) ||\n (allowIntersect &&\n currentObject.containsPoint(selectionX2Y2, null, true))\n ) {\n group.push(currentObject);\n // only add one object if it's a click\n if (isClick) {\n break;\n }\n }\n }\n\n if (group.length > 1) {\n group = group.filter(function (object) {\n return !object.onSelect({ e: e });\n });\n }\n\n return group;\n },\n\n /**\n * @private\n */\n _maybeGroupObjects: function (e) {\n if (this.selection && this._groupSelector) {\n this._groupSelectedObjects(e);\n }\n this.setCursor(this.defaultCursor);\n // clear selection and current transformation\n this._groupSelector = null;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.StaticCanvas.prototype,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Exports canvas element to a dataurl image. Note that when multiplier is used, cropping is scaled appropriately\n * @param {Object} [options] Options object\n * @param {String} [options.format=png] The format of the output image. Either \"jpeg\" or \"png\"\n * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg.\n * @param {Number} [options.multiplier=1] Multiplier to scale by, to have consistent\n * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14\n * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14\n * @param {Number} [options.width] Cropping width. Introduced in v1.2.14\n * @param {Number} [options.height] Cropping height. Introduced in v1.2.14\n * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 2.0.0\n * @param {(object: fabric.Object) => boolean} [options.filter] Function to filter objects.\n * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format\n * @see {@link https://jsfiddle.net/xsjua1rd/ demo}\n * @example Generate jpeg dataURL with lower quality\n * var dataURL = canvas.toDataURL({\n * format: 'jpeg',\n * quality: 0.8\n * });\n * @example Generate cropped png dataURL (clipping of canvas)\n * var dataURL = canvas.toDataURL({\n * format: 'png',\n * left: 100,\n * top: 100,\n * width: 200,\n * height: 200\n * });\n * @example Generate double scaled png dataURL\n * var dataURL = canvas.toDataURL({\n * format: 'png',\n * multiplier: 2\n * });\n * @example Generate dataURL with objects that overlap a specified object\n * var myObject;\n * var dataURL = canvas.toDataURL({\n * filter: (object) => object.isContainedWithinObject(myObject) || object.intersectsWithObject(myObject)\n * });\n */\n toDataURL: function (options) {\n options || (options = {});\n\n var format = options.format || 'png',\n quality = options.quality || 1,\n multiplier =\n (options.multiplier || 1) *\n (options.enableRetinaScaling ? this.getRetinaScaling() : 1),\n canvasEl = this.toCanvasElement(multiplier, options);\n return fabric.util.toDataURL(canvasEl, format, quality);\n },\n\n /**\n * Create a new HTMLCanvas element painted with the current canvas content.\n * No need to resize the actual one or repaint it.\n * Will transfer object ownership to a new canvas, paint it, and set everything back.\n * This is an intermediary step used to get to a dataUrl but also it is useful to\n * create quick image copies of a canvas without passing for the dataUrl string\n * @param {Number} [multiplier] a zoom factor.\n * @param {Object} [options] Cropping informations\n * @param {Number} [options.left] Cropping left offset.\n * @param {Number} [options.top] Cropping top offset.\n * @param {Number} [options.width] Cropping width.\n * @param {Number} [options.height] Cropping height.\n * @param {(object: fabric.Object) => boolean} [options.filter] Function to filter objects.\n */\n toCanvasElement: function (multiplier, options) {\n multiplier = multiplier || 1;\n options = options || {};\n var scaledWidth = (options.width || this.width) * multiplier,\n scaledHeight = (options.height || this.height) * multiplier,\n zoom = this.getZoom(),\n originalWidth = this.width,\n originalHeight = this.height,\n newZoom = zoom * multiplier,\n vp = this.viewportTransform,\n translateX = (vp[4] - (options.left || 0)) * multiplier,\n translateY = (vp[5] - (options.top || 0)) * multiplier,\n originalInteractive = this.interactive,\n newVp = [newZoom, 0, 0, newZoom, translateX, translateY],\n originalRetina = this.enableRetinaScaling,\n canvasEl = fabric.util.createCanvasElement(),\n originalContextTop = this.contextTop,\n objectsToRender = options.filter\n ? this._objects.filter(options.filter)\n : this._objects;\n canvasEl.width = scaledWidth;\n canvasEl.height = scaledHeight;\n this.contextTop = null;\n this.enableRetinaScaling = false;\n this.interactive = false;\n this.viewportTransform = newVp;\n this.width = scaledWidth;\n this.height = scaledHeight;\n this.calcViewportBoundaries();\n this.renderCanvas(canvasEl.getContext('2d'), objectsToRender);\n this.viewportTransform = vp;\n this.width = originalWidth;\n this.height = originalHeight;\n this.calcViewportBoundaries();\n this.interactive = originalInteractive;\n this.enableRetinaScaling = originalRetina;\n this.contextTop = originalContextTop;\n return canvasEl;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.StaticCanvas.prototype,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Populates canvas with data from the specified JSON.\n * JSON format must conform to the one of {@link fabric.Canvas#toJSON}\n *\n * **IMPORTANT**: It is recommended to abort loading tasks before calling this method to prevent race conditions and unnecessary networking\n *\n * @param {String|Object} json JSON string or object\n * @param {Function} [reviver] Method for further parsing of JSON elements, called after each fabric object created.\n * @param {Object} [options] options\n * @param {AbortSignal} [options.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @return {Promise} instance\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#deserialization}\n * @see {@link http://jsfiddle.net/fabricjs/fmgXt/|jsFiddle demo}\n * @example loadFromJSON\n * canvas.loadFromJSON(json).then((canvas) => canvas.requestRenderAll());\n * @example loadFromJSON with reviver\n * canvas.loadFromJSON(json, function(o, object) {\n * // `o` = json object\n * // `object` = fabric.Object instance\n * // ... do some stuff ...\n * }).then((canvas) => {\n * ... canvas is restored, add your code.\n * });\n *\n */\n loadFromJSON: function (json, reviver, options) {\n if (!json) {\n return Promise.reject(new Error('fabric.js: `json` is undefined'));\n }\n\n // serialize if it wasn't already\n var serialized =\n typeof json === 'string' ? JSON.parse(json) : Object.assign({}, json);\n\n var _this = this,\n renderOnAddRemove = this.renderOnAddRemove;\n this.renderOnAddRemove = false;\n\n return Promise.all([\n fabric.util.enlivenObjects(serialized.objects || [], {\n reviver: reviver,\n signal: options && options.signal,\n }),\n fabric.util.enlivenObjectEnlivables(\n {\n backgroundImage: serialized.backgroundImage,\n backgroundColor: serialized.background,\n overlayImage: serialized.overlayImage,\n overlayColor: serialized.overlay,\n clipPath: serialized.clipPath,\n },\n { signal: options && options.signal }\n ),\n ]).then(function (res) {\n var enlived = res[0],\n enlivedMap = res[1];\n _this.clear();\n _this.__setupCanvas(serialized, enlived);\n _this.renderOnAddRemove = renderOnAddRemove;\n _this.set(enlivedMap);\n return _this;\n });\n },\n\n /**\n * @private\n * @param {Object} serialized Object with background and overlay information\n * @param {Array} enlivenedObjects canvas objects\n */\n __setupCanvas: function (serialized, enlivenedObjects) {\n var _this = this;\n enlivenedObjects.forEach(function (obj, index) {\n // we splice the array just in case some custom classes restored from JSON\n // will add more object to canvas at canvas init.\n _this.insertAt(obj, index);\n });\n // remove parts i cannot set as options\n delete serialized.objects;\n delete serialized.backgroundImage;\n delete serialized.overlayImage;\n delete serialized.background;\n delete serialized.overlay;\n // this._initOptions does too many things to just\n // call it. Normally loading an Object from JSON\n // create the Object instance. Here the Canvas is\n // already an instance and we are just loading things over it\n this._setOptions(serialized);\n },\n\n /**\n * Clones canvas instance\n * @param {Array} [properties] Array of properties to include in the cloned canvas and children\n * @returns {Promise}\n */\n clone: function (properties) {\n var data = JSON.stringify(this.toJSON(properties));\n return this.cloneWithoutData().then(function (clone) {\n return clone.loadFromJSON(data);\n });\n },\n\n /**\n * Clones canvas instance without cloning existing data.\n * This essentially copies canvas dimensions, clipping properties, etc.\n * but leaves data empty (so that you can populate it with your own)\n * @returns {Promise}\n */\n cloneWithoutData: function () {\n var el = fabric.util.createCanvasElement();\n\n el.width = this.width;\n el.height = this.height;\n // this seems wrong. either Canvas or StaticCanvas\n var clone = new fabric.Canvas(el);\n var data = {};\n if (this.backgroundImage) {\n data.backgroundImage = this.backgroundImage.toObject();\n }\n if (this.backgroundColor) {\n data.background = this.backgroundColor.toObject\n ? this.backgroundColor.toObject()\n : this.backgroundColor;\n }\n return clone.loadFromJSON(data);\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n degreesToRadians = fabric.util.degreesToRadians,\n radiansToDegrees = fabric.util.radiansToDegrees;\n\n /**\n * Adds support for multi-touch gestures using the Event.js library.\n * Fires the following custom events:\n * - touch:gesture\n * - touch:drag\n * - touch:orientation\n * - touch:shake\n * - touch:longpress\n */\n fabric.util.object.extend(\n fabric.Canvas.prototype,\n /** @lends fabric.Canvas.prototype */ {\n /**\n * Method that defines actions when an Event.js gesture is detected on an object. Currently only supports\n * 2 finger gestures.\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onTransformGesture: function (e, self) {\n if (\n this.isDrawingMode ||\n !e.touches ||\n e.touches.length !== 2 ||\n 'gesture' !== self.gesture\n ) {\n return;\n }\n\n var target = this.findTarget(e);\n if ('undefined' !== typeof target) {\n this.__gesturesParams = {\n e: e,\n self: self,\n target: target,\n };\n\n this.__gesturesRenderer();\n }\n\n this.fire('touch:gesture', {\n target: target,\n e: e,\n self: self,\n });\n },\n __gesturesParams: null,\n __gesturesRenderer: function () {\n if (this.__gesturesParams === null || this._currentTransform === null) {\n return;\n }\n\n var self = this.__gesturesParams.self,\n t = this._currentTransform,\n e = this.__gesturesParams.e;\n\n t.action = 'scale';\n t.originX = t.originY = 'center';\n\n this._scaleObjectBy(self.scale, e);\n\n if (self.rotation !== 0) {\n t.action = 'rotate';\n this._rotateObjectByAngle(self.rotation, e);\n }\n\n this.requestRenderAll();\n\n t.action = 'drag';\n },\n\n /**\n * Method that defines actions when an Event.js drag is detected.\n *\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onDrag: function (e, self) {\n this.fire('touch:drag', {\n e: e,\n self: self,\n });\n },\n\n /**\n * Method that defines actions when an Event.js orientation event is detected.\n *\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onOrientationChange: function (e, self) {\n this.fire('touch:orientation', {\n e: e,\n self: self,\n });\n },\n\n /**\n * Method that defines actions when an Event.js shake event is detected.\n *\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onShake: function (e, self) {\n this.fire('touch:shake', {\n e: e,\n self: self,\n });\n },\n\n /**\n * Method that defines actions when an Event.js longpress event is detected.\n *\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onLongPress: function (e, self) {\n this.fire('touch:longpress', {\n e: e,\n self: self,\n });\n },\n\n /**\n * Scales an object by a factor\n * @param {Number} s The scale factor to apply to the current scale level\n * @param {Event} e Event object by Event.js\n */\n _scaleObjectBy: function (s, e) {\n var t = this._currentTransform,\n target = t.target;\n t.gestureScale = s;\n target._scaling = true;\n return fabric.controlsUtils.scalingEqually(e, t, 0, 0);\n },\n\n /**\n * Rotates object by an angle\n * @param {Number} curAngle The angle of rotation in degrees\n * @param {Event} e Event object by Event.js\n */\n _rotateObjectByAngle: function (curAngle, e) {\n var t = this._currentTransform;\n\n if (t.target.get('lockRotation')) {\n return;\n }\n t.target.rotate(radiansToDegrees(degreesToRadians(curAngle) + t.theta));\n this._fire('rotating', {\n target: t.target,\n e: e,\n transform: t,\n });\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { cache } from '../cache';\nimport { config } from '../config';\nimport { VERSION } from '../constants';\nimport { Point } from '../point.class';\nimport { capValue } from '../util/misc/capValue';\nimport { pick } from '../util/misc/pick';\nimport { runningAnimations } from '../util/animation_registry';\nimport { enlivenObjectEnlivables } from '../util/misc/objectEnlive';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n clone = fabric.util.object.clone,\n toFixed = fabric.util.toFixed,\n capitalize = fabric.util.string.capitalize,\n degreesToRadians = fabric.util.degreesToRadians,\n objectCaching = !fabric.isLikelyNode,\n ALIASING_LIMIT = 2;\n /**\n * Root object class from which all 2d shape classes inherit from\n * @class fabric.Object\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#objects}\n * @see {@link fabric.Object#initialize} for constructor definition\n *\n * @fires added\n * @fires removed\n *\n * @fires selected\n * @fires deselected\n * @fires modified\n * @fires modified\n * @fires moved\n * @fires scaled\n * @fires rotated\n * @fires skewed\n *\n * @fires rotating\n * @fires scaling\n * @fires moving\n * @fires skewing\n *\n * @fires mousedown\n * @fires mouseup\n * @fires mouseover\n * @fires mouseout\n * @fires mousewheel\n * @fires mousedblclick\n *\n * @fires dragover\n * @fires dragenter\n * @fires dragleave\n * @fires drop\n */\n fabric.Object = fabric.util.createClass(\n fabric.CommonMethods,\n /** @lends fabric.Object.prototype */ {\n /**\n * Type of an object (rect, circle, path, etc.).\n * Note that this property is meant to be read-only and not meant to be modified.\n * If you modify, certain parts of Fabric (such as JSON loading) won't work correctly.\n * @type String\n * @default\n */\n type: 'object',\n\n /**\n * Horizontal origin of transformation of an object (one of \"left\", \"right\", \"center\")\n * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups\n * @type String\n * @default\n */\n originX: 'left',\n\n /**\n * Vertical origin of transformation of an object (one of \"top\", \"bottom\", \"center\")\n * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups\n * @type String\n * @default\n */\n originY: 'top',\n\n /**\n * Top position of an object. Note that by default it's relative to object top. You can change this by setting originY={top/center/bottom}\n * @type Number\n * @default\n */\n top: 0,\n\n /**\n * Left position of an object. Note that by default it's relative to object left. You can change this by setting originX={left/center/right}\n * @type Number\n * @default\n */\n left: 0,\n\n /**\n * Object width\n * @type Number\n * @default\n */\n width: 0,\n\n /**\n * Object height\n * @type Number\n * @default\n */\n height: 0,\n\n /**\n * Object scale factor (horizontal)\n * @type Number\n * @default\n */\n scaleX: 1,\n\n /**\n * Object scale factor (vertical)\n * @type Number\n * @default\n */\n scaleY: 1,\n\n /**\n * When true, an object is rendered as flipped horizontally\n * @type Boolean\n * @default\n */\n flipX: false,\n\n /**\n * When true, an object is rendered as flipped vertically\n * @type Boolean\n * @default\n */\n flipY: false,\n\n /**\n * Opacity of an object\n * @type Number\n * @default\n */\n opacity: 1,\n\n /**\n * Angle of rotation of an object (in degrees)\n * @type Number\n * @default\n */\n angle: 0,\n\n /**\n * Angle of skew on x axes of an object (in degrees)\n * @type Number\n * @default\n */\n skewX: 0,\n\n /**\n * Angle of skew on y axes of an object (in degrees)\n * @type Number\n * @default\n */\n skewY: 0,\n\n /**\n * Size of object's controlling corners (in pixels)\n * @type Number\n * @default\n */\n cornerSize: 13,\n\n /**\n * Size of object's controlling corners when touch interaction is detected\n * @type Number\n * @default\n */\n touchCornerSize: 24,\n\n /**\n * When true, object's controlling corners are rendered as transparent inside (i.e. stroke instead of fill)\n * @type Boolean\n * @default\n */\n transparentCorners: true,\n\n /**\n * Default cursor value used when hovering over this object on canvas\n * @type String\n * @default\n */\n hoverCursor: null,\n\n /**\n * Default cursor value used when moving this object on canvas\n * @type String\n * @default\n */\n moveCursor: null,\n\n /**\n * Padding between object and its controlling borders (in pixels)\n * @type Number\n * @default\n */\n padding: 0,\n\n /**\n * Color of controlling borders of an object (when it's active)\n * @type String\n * @default\n */\n borderColor: 'rgb(178,204,255)',\n\n /**\n * Array specifying dash pattern of an object's borders (hasBorder must be true)\n * @since 1.6.2\n * @type Array\n */\n borderDashArray: null,\n\n /**\n * Color of controlling corners of an object (when it's active)\n * @type String\n * @default\n */\n cornerColor: 'rgb(178,204,255)',\n\n /**\n * Color of controlling corners of an object (when it's active and transparentCorners false)\n * @since 1.6.2\n * @type String\n * @default\n */\n cornerStrokeColor: null,\n\n /**\n * Specify style of control, 'rect' or 'circle'\n * @since 1.6.2\n * @type String\n */\n cornerStyle: 'rect',\n\n /**\n * Array specifying dash pattern of an object's control (hasBorder must be true)\n * @since 1.6.2\n * @type Array\n */\n cornerDashArray: null,\n\n /**\n * When true, this object will use center point as the origin of transformation\n * when being scaled via the controls.\n * Backwards incompatibility note: This property replaces \"centerTransform\" (Boolean).\n * @since 1.3.4\n * @type Boolean\n * @default\n */\n centeredScaling: false,\n\n /**\n * When true, this object will use center point as the origin of transformation\n * when being rotated via the controls.\n * Backwards incompatibility note: This property replaces \"centerTransform\" (Boolean).\n * @since 1.3.4\n * @type Boolean\n * @default\n */\n centeredRotation: true,\n\n /**\n * Color of object's fill\n * takes css colors https://www.w3.org/TR/css-color-3/\n * @type String\n * @default\n */\n fill: 'rgb(0,0,0)',\n\n /**\n * Fill rule used to fill an object\n * accepted values are nonzero, evenodd\n * Backwards incompatibility note: This property was used for setting globalCompositeOperation until v1.4.12 (use `fabric.Object#globalCompositeOperation` instead)\n * @type String\n * @default\n */\n fillRule: 'nonzero',\n\n /**\n * Composite rule used for canvas globalCompositeOperation\n * @type String\n * @default\n */\n globalCompositeOperation: 'source-over',\n\n /**\n * Background color of an object.\n * takes css colors https://www.w3.org/TR/css-color-3/\n * @type String\n * @default\n */\n backgroundColor: '',\n\n /**\n * Selection Background color of an object. colored layer behind the object when it is active.\n * does not mix good with globalCompositeOperation methods.\n * @type String\n * @default\n */\n selectionBackgroundColor: '',\n\n /**\n * When defined, an object is rendered via stroke and this property specifies its color\n * takes css colors https://www.w3.org/TR/css-color-3/\n * @type String\n * @default\n */\n stroke: null,\n\n /**\n * Width of a stroke used to render this object\n * @type Number\n * @default\n */\n strokeWidth: 1,\n\n /**\n * Array specifying dash pattern of an object's stroke (stroke must be defined)\n * @type Array\n */\n strokeDashArray: null,\n\n /**\n * Line offset of an object's stroke\n * @type Number\n * @default\n */\n strokeDashOffset: 0,\n\n /**\n * Line endings style of an object's stroke (one of \"butt\", \"round\", \"square\")\n * @type String\n * @default\n */\n strokeLineCap: 'butt',\n\n /**\n * Corner style of an object's stroke (one of \"bevel\", \"round\", \"miter\")\n * @type String\n * @default\n */\n strokeLineJoin: 'miter',\n\n /**\n * Maximum miter length (used for strokeLineJoin = \"miter\") of an object's stroke\n * @type Number\n * @default\n */\n strokeMiterLimit: 4,\n\n /**\n * Shadow object representing shadow of this shape\n * @type fabric.Shadow\n * @default\n */\n shadow: null,\n\n /**\n * Opacity of object's controlling borders when object is active and moving\n * @type Number\n * @default\n */\n borderOpacityWhenMoving: 0.4,\n\n /**\n * Scale factor of object's controlling borders\n * bigger number will make a thicker border\n * border is 1, so this is basically a border thickness\n * since there is no way to change the border itself.\n * @type Number\n * @default\n */\n borderScaleFactor: 1,\n\n /**\n * Minimum allowed scale value of an object\n * @type Number\n * @default\n */\n minScaleLimit: 0,\n\n /**\n * When set to `false`, an object can not be selected for modification (using either point-click-based or group-based selection).\n * But events still fire on it.\n * @type Boolean\n * @default\n */\n selectable: true,\n\n /**\n * When set to `false`, an object can not be a target of events. All events propagate through it. Introduced in v1.3.4\n * @type Boolean\n * @default\n */\n evented: true,\n\n /**\n * When set to `false`, an object is not rendered on canvas\n * @type Boolean\n * @default\n */\n visible: true,\n\n /**\n * When set to `false`, object's controls are not displayed and can not be used to manipulate object\n * @type Boolean\n * @default\n */\n hasControls: true,\n\n /**\n * When set to `false`, object's controlling borders are not rendered\n * @type Boolean\n * @default\n */\n hasBorders: true,\n\n /**\n * When set to `true`, objects are \"found\" on canvas on per-pixel basis rather than according to bounding box\n * @type Boolean\n * @default\n */\n perPixelTargetFind: false,\n\n /**\n * When `false`, default object's values are not included in its serialization\n * @type Boolean\n * @default\n */\n includeDefaultValues: true,\n\n /**\n * When `true`, object horizontal movement is locked\n * @type Boolean\n * @default\n */\n lockMovementX: false,\n\n /**\n * When `true`, object vertical movement is locked\n * @type Boolean\n * @default\n */\n lockMovementY: false,\n\n /**\n * When `true`, object rotation is locked\n * @type Boolean\n * @default\n */\n lockRotation: false,\n\n /**\n * When `true`, object horizontal scaling is locked\n * @type Boolean\n * @default\n */\n lockScalingX: false,\n\n /**\n * When `true`, object vertical scaling is locked\n * @type Boolean\n * @default\n */\n lockScalingY: false,\n\n /**\n * When `true`, object horizontal skewing is locked\n * @type Boolean\n * @default\n */\n lockSkewingX: false,\n\n /**\n * When `true`, object vertical skewing is locked\n * @type Boolean\n * @default\n */\n lockSkewingY: false,\n\n /**\n * When `true`, object cannot be flipped by scaling into negative values\n * @type Boolean\n * @default\n */\n lockScalingFlip: false,\n\n /**\n * When `true`, object is not exported in OBJECT/JSON\n * @since 1.6.3\n * @type Boolean\n * @default\n */\n excludeFromExport: false,\n\n /**\n * When `true`, object is cached on an additional canvas.\n * When `false`, object is not cached unless necessary ( clipPath )\n * default to true\n * @since 1.7.0\n * @type Boolean\n * @default true\n */\n objectCaching: objectCaching,\n\n /**\n * When `true`, object properties are checked for cache invalidation. In some particular\n * situation you may want this to be disabled ( spray brush, very big, groups)\n * or if your application does not allow you to modify properties for groups child you want\n * to disable it for groups.\n * default to false\n * since 1.7.0\n * @type Boolean\n * @default false\n */\n statefullCache: false,\n\n /**\n * When `true`, cache does not get updated during scaling. The picture will get blocky if scaled\n * too much and will be redrawn with correct details at the end of scaling.\n * this setting is performance and application dependant.\n * default to true\n * since 1.7.0\n * @type Boolean\n * @default true\n */\n noScaleCache: true,\n\n /**\n * When `false`, the stoke width will scale with the object.\n * When `true`, the stroke will always match the exact pixel size entered for stroke width.\n * this Property does not work on Text classes or drawing call that uses strokeText,fillText methods\n * default to false\n * @since 2.6.0\n * @type Boolean\n * @default false\n * @type Boolean\n * @default false\n */\n strokeUniform: false,\n\n /**\n * When set to `true`, object's cache will be rerendered next render call.\n * since 1.7.0\n * @type Boolean\n * @default true\n */\n dirty: true,\n\n /**\n * keeps the value of the last hovered corner during mouse move.\n * 0 is no corner, or 'mt', 'ml', 'mtr' etc..\n * It should be private, but there is no harm in using it as\n * a read-only property.\n * @type number|string|any\n * @default 0\n */\n __corner: 0,\n\n /**\n * Determines if the fill or the stroke is drawn first (one of \"fill\" or \"stroke\")\n * @type String\n * @default\n */\n paintFirst: 'fill',\n\n /**\n * When 'down', object is set to active on mousedown/touchstart\n * When 'up', object is set to active on mouseup/touchend\n * Experimental. Let's see if this breaks anything before supporting officially\n * @private\n * since 4.4.0\n * @type String\n * @default 'down'\n */\n activeOn: 'down',\n\n /**\n * List of properties to consider when checking if state\n * of an object is changed (fabric.Object#hasStateChanged)\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties: (\n 'top left width height scaleX scaleY flipX flipY originX originY transformMatrix ' +\n 'stroke strokeWidth strokeDashArray strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit ' +\n 'angle opacity fill globalCompositeOperation shadow visible backgroundColor ' +\n 'skewX skewY fillRule paintFirst clipPath strokeUniform'\n ).split(' '),\n\n /**\n * List of properties to consider when checking if cache needs refresh\n * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single\n * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty\n * and refreshed at the next render\n * @type Array\n */\n cacheProperties: (\n 'fill stroke strokeWidth strokeDashArray width height paintFirst strokeUniform' +\n ' strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit backgroundColor clipPath'\n ).split(' '),\n\n /**\n * List of properties to consider for animating colors.\n * @type Array\n */\n colorProperties: 'fill stroke backgroundColor'.split(' '),\n\n /**\n * a fabricObject that, without stroke define a clipping area with their shape. filled in black\n * the clipPath object gets used when the object has rendered, and the context is placed in the center\n * of the object cacheCanvas.\n * If you want 0,0 of a clipPath to align with an object center, use clipPath.originX/Y to 'center'\n * @type fabric.Object\n */\n clipPath: undefined,\n\n /**\n * Meaningful ONLY when the object is used as clipPath.\n * if true, the clipPath will make the object clip to the outside of the clipPath\n * since 2.4.0\n * @type boolean\n * @default false\n */\n inverted: false,\n\n /**\n * Meaningful ONLY when the object is used as clipPath.\n * if true, the clipPath will have its top and left relative to canvas, and will\n * not be influenced by the object transform. This will make the clipPath relative\n * to the canvas, but clipping just a particular object.\n * WARNING this is beta, this feature may change or be renamed.\n * since 2.4.0\n * @type boolean\n * @default false\n */\n absolutePositioned: false,\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n if (options) {\n this.setOptions(options);\n }\n },\n\n /**\n * Create a the canvas used to keep the cached copy of the object\n * @private\n */\n _createCacheCanvas: function () {\n this._cacheProperties = {};\n this._cacheCanvas = fabric.util.createCanvasElement();\n this._cacheContext = this._cacheCanvas.getContext('2d');\n this._updateCacheCanvas();\n // if canvas gets created, is empty, so dirty.\n this.dirty = true;\n },\n\n /**\n * Limit the cache dimensions so that X * Y do not cross config.perfLimitSizeTotal\n * and each side do not cross fabric.cacheSideLimit\n * those numbers are configurable so that you can get as much detail as you want\n * making bargain with performances.\n * @param {Object} dims\n * @param {Object} dims.width width of canvas\n * @param {Object} dims.height height of canvas\n * @param {Object} dims.zoomX zoomX zoom value to unscale the canvas before drawing cache\n * @param {Object} dims.zoomY zoomY zoom value to unscale the canvas before drawing cache\n * @return {Object}.width width of canvas\n * @return {Object}.height height of canvas\n * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache\n * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache\n */\n _limitCacheSize: function (dims) {\n var width = dims.width,\n height = dims.height,\n max = config.maxCacheSideLimit,\n min = config.minCacheSideLimit;\n if (\n width <= max &&\n height <= max &&\n width * height <= config.perfLimitSizeTotal\n ) {\n if (width < min) {\n dims.width = min;\n }\n if (height < min) {\n dims.height = min;\n }\n return dims;\n }\n var ar = width / height,\n [limX, limY] = cache.limitDimsByArea(ar),\n x = capValue(min, limX, max),\n y = capValue(min, limY, max);\n if (width > x) {\n dims.zoomX /= width / x;\n dims.width = x;\n dims.capped = true;\n }\n if (height > y) {\n dims.zoomY /= height / y;\n dims.height = y;\n dims.capped = true;\n }\n return dims;\n },\n\n /**\n * Return the dimension and the zoom level needed to create a cache canvas\n * big enough to host the object to be cached.\n * @private\n * @return {Object}.x width of object to be cached\n * @return {Object}.y height of object to be cached\n * @return {Object}.width width of canvas\n * @return {Object}.height height of canvas\n * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache\n * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache\n */\n _getCacheCanvasDimensions: function () {\n var objectScale = this.getTotalObjectScaling(),\n // caculate dimensions without skewing\n dim = this._getTransformedDimensions({ skewX: 0, skewY: 0 }),\n neededX = (dim.x * objectScale.x) / this.scaleX,\n neededY = (dim.y * objectScale.y) / this.scaleY;\n return {\n // for sure this ALIASING_LIMIT is slightly creating problem\n // in situation in which the cache canvas gets an upper limit\n // also objectScale contains already scaleX and scaleY\n width: neededX + ALIASING_LIMIT,\n height: neededY + ALIASING_LIMIT,\n zoomX: objectScale.x,\n zoomY: objectScale.y,\n x: neededX,\n y: neededY,\n };\n },\n\n /**\n * Update width and height of the canvas for cache\n * returns true or false if canvas needed resize.\n * @private\n * @return {Boolean} true if the canvas has been resized\n */\n _updateCacheCanvas: function () {\n var targetCanvas = this.canvas;\n if (\n this.noScaleCache &&\n targetCanvas &&\n targetCanvas._currentTransform\n ) {\n var target = targetCanvas._currentTransform.target,\n action = targetCanvas._currentTransform.action;\n if (\n this === target &&\n action.slice &&\n action.slice(0, 5) === 'scale'\n ) {\n return false;\n }\n }\n var canvas = this._cacheCanvas,\n dims = this._limitCacheSize(this._getCacheCanvasDimensions()),\n minCacheSize = config.minCacheSideLimit,\n width = dims.width,\n height = dims.height,\n drawingWidth,\n drawingHeight,\n zoomX = dims.zoomX,\n zoomY = dims.zoomY,\n dimensionsChanged =\n width !== this.cacheWidth || height !== this.cacheHeight,\n zoomChanged = this.zoomX !== zoomX || this.zoomY !== zoomY,\n shouldRedraw = dimensionsChanged || zoomChanged,\n additionalWidth = 0,\n additionalHeight = 0,\n shouldResizeCanvas = false;\n if (dimensionsChanged) {\n var canvasWidth = this._cacheCanvas.width,\n canvasHeight = this._cacheCanvas.height,\n sizeGrowing = width > canvasWidth || height > canvasHeight,\n sizeShrinking =\n (width < canvasWidth * 0.9 || height < canvasHeight * 0.9) &&\n canvasWidth > minCacheSize &&\n canvasHeight > minCacheSize;\n shouldResizeCanvas = sizeGrowing || sizeShrinking;\n if (\n sizeGrowing &&\n !dims.capped &&\n (width > minCacheSize || height > minCacheSize)\n ) {\n additionalWidth = width * 0.1;\n additionalHeight = height * 0.1;\n }\n }\n if (this instanceof fabric.Text && this.path) {\n shouldRedraw = true;\n shouldResizeCanvas = true;\n additionalWidth += this.getHeightOfLine(0) * this.zoomX;\n additionalHeight += this.getHeightOfLine(0) * this.zoomY;\n }\n if (shouldRedraw) {\n if (shouldResizeCanvas) {\n canvas.width = Math.ceil(width + additionalWidth);\n canvas.height = Math.ceil(height + additionalHeight);\n } else {\n this._cacheContext.setTransform(1, 0, 0, 1, 0, 0);\n this._cacheContext.clearRect(0, 0, canvas.width, canvas.height);\n }\n drawingWidth = dims.x / 2;\n drawingHeight = dims.y / 2;\n this.cacheTranslationX =\n Math.round(canvas.width / 2 - drawingWidth) + drawingWidth;\n this.cacheTranslationY =\n Math.round(canvas.height / 2 - drawingHeight) + drawingHeight;\n this.cacheWidth = width;\n this.cacheHeight = height;\n this._cacheContext.translate(\n this.cacheTranslationX,\n this.cacheTranslationY\n );\n this._cacheContext.scale(zoomX, zoomY);\n this.zoomX = zoomX;\n this.zoomY = zoomY;\n return true;\n }\n return false;\n },\n\n /**\n * Sets object's properties from options\n * @param {Object} [options] Options object\n */\n setOptions: function (options) {\n this._setOptions(options);\n },\n\n /**\n * Transforms context when rendering an object\n * @param {CanvasRenderingContext2D} ctx Context\n */\n transform: function (ctx) {\n var needFullTransform =\n (this.group && !this.group._transformDone) ||\n (this.group && this.canvas && ctx === this.canvas.contextTop);\n var m = this.calcTransformMatrix(!needFullTransform);\n ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]);\n },\n\n /**\n * Returns an object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n const NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS,\n clipPathData =\n this.clipPath && !this.clipPath.excludeFromExport\n ? {\n ...this.clipPath.toObject(propertiesToInclude),\n inverted: this.clipPath.inverted,\n absolutePositioned: this.clipPath.absolutePositioned,\n }\n : null,\n object = {\n ...pick(this, propertiesToInclude),\n type: this.type,\n version: VERSION,\n originX: this.originX,\n originY: this.originY,\n left: toFixed(this.left, NUM_FRACTION_DIGITS),\n top: toFixed(this.top, NUM_FRACTION_DIGITS),\n width: toFixed(this.width, NUM_FRACTION_DIGITS),\n height: toFixed(this.height, NUM_FRACTION_DIGITS),\n fill:\n this.fill && this.fill.toObject\n ? this.fill.toObject()\n : this.fill,\n stroke:\n this.stroke && this.stroke.toObject\n ? this.stroke.toObject()\n : this.stroke,\n strokeWidth: toFixed(this.strokeWidth, NUM_FRACTION_DIGITS),\n strokeDashArray: this.strokeDashArray\n ? this.strokeDashArray.concat()\n : this.strokeDashArray,\n strokeLineCap: this.strokeLineCap,\n strokeDashOffset: this.strokeDashOffset,\n strokeLineJoin: this.strokeLineJoin,\n strokeUniform: this.strokeUniform,\n strokeMiterLimit: toFixed(\n this.strokeMiterLimit,\n NUM_FRACTION_DIGITS\n ),\n scaleX: toFixed(this.scaleX, NUM_FRACTION_DIGITS),\n scaleY: toFixed(this.scaleY, NUM_FRACTION_DIGITS),\n angle: toFixed(this.angle, NUM_FRACTION_DIGITS),\n flipX: this.flipX,\n flipY: this.flipY,\n opacity: toFixed(this.opacity, NUM_FRACTION_DIGITS),\n shadow:\n this.shadow && this.shadow.toObject\n ? this.shadow.toObject()\n : this.shadow,\n visible: this.visible,\n backgroundColor: this.backgroundColor,\n fillRule: this.fillRule,\n paintFirst: this.paintFirst,\n globalCompositeOperation: this.globalCompositeOperation,\n skewX: toFixed(this.skewX, NUM_FRACTION_DIGITS),\n skewY: toFixed(this.skewY, NUM_FRACTION_DIGITS),\n ...(clipPathData ? { clipPath: clipPathData } : null),\n };\n\n return !this.includeDefaultValues\n ? this._removeDefaultValues(object)\n : object;\n },\n\n /**\n * Returns (dataless) object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toDatalessObject: function (propertiesToInclude) {\n // will be overwritten by subclasses\n return this.toObject(propertiesToInclude);\n },\n\n /**\n * @private\n * @param {Object} object\n */\n _removeDefaultValues: function (object) {\n var prototype = fabric.util.getKlass(object.type).prototype;\n Object.keys(object).forEach(function (prop) {\n if (prop === 'left' || prop === 'top' || prop === 'type') {\n return;\n }\n if (object[prop] === prototype[prop]) {\n delete object[prop];\n }\n // basically a check for [] === []\n if (\n Array.isArray(object[prop]) &&\n Array.isArray(prototype[prop]) &&\n object[prop].length === 0 &&\n prototype[prop].length === 0\n ) {\n delete object[prop];\n }\n });\n\n return object;\n },\n\n /**\n * Returns a string representation of an instance\n * @return {String}\n */\n toString: function () {\n return '#';\n },\n\n /**\n * Return the object scale factor counting also the group scaling\n * @return {Point}\n */\n getObjectScaling: function () {\n // if the object is a top level one, on the canvas, we go for simple aritmetic\n // otherwise the complex method with angles will return approximations and decimals\n // and will likely kill the cache when not needed\n // https://github.com/fabricjs/fabric.js/issues/7157\n if (!this.group) {\n return new Point(Math.abs(this.scaleX), Math.abs(this.scaleY));\n }\n // if we are inside a group total zoom calculation is complex, we defer to generic matrices\n var options = fabric.util.qrDecompose(this.calcTransformMatrix());\n return new Point(Math.abs(options.scaleX), Math.abs(options.scaleY));\n },\n\n /**\n * Return the object scale factor counting also the group scaling, zoom and retina\n * @return {Object} object with scaleX and scaleY properties\n */\n getTotalObjectScaling: function () {\n var scale = this.getObjectScaling();\n if (this.canvas) {\n var zoom = this.canvas.getZoom();\n var retina = this.canvas.getRetinaScaling();\n return scale.scalarMultiply(zoom * retina);\n }\n return scale;\n },\n\n /**\n * Return the object opacity counting also the group property\n * @return {Number}\n */\n getObjectOpacity: function () {\n var opacity = this.opacity;\n if (this.group) {\n opacity *= this.group.getObjectOpacity();\n }\n return opacity;\n },\n\n /**\n * Returns the object angle relative to canvas counting also the group property\n * @returns {number}\n */\n getTotalAngle: function () {\n return this.group\n ? fabric.util.qrDecompose(this.calcTransformMatrix()).angle\n : this.angle;\n },\n\n /**\n * @private\n * @param {String} key\n * @param {*} value\n * @return {fabric.Object} thisArg\n */\n _set: function (key, value) {\n var shouldConstrainValue = key === 'scaleX' || key === 'scaleY',\n isChanged = this[key] !== value,\n groupNeedsUpdate = false;\n\n if (shouldConstrainValue) {\n value = this._constrainScale(value);\n }\n if (key === 'scaleX' && value < 0) {\n this.flipX = !this.flipX;\n value *= -1;\n } else if (key === 'scaleY' && value < 0) {\n this.flipY = !this.flipY;\n value *= -1;\n } else if (\n key === 'shadow' &&\n value &&\n !(value instanceof fabric.Shadow)\n ) {\n value = new fabric.Shadow(value);\n } else if (key === 'dirty' && this.group) {\n this.group.set('dirty', value);\n }\n\n this[key] = value;\n\n if (isChanged) {\n groupNeedsUpdate = this.group && this.group.isOnACache();\n if (this.cacheProperties.indexOf(key) > -1) {\n this.dirty = true;\n groupNeedsUpdate && this.group.set('dirty', true);\n } else if (\n groupNeedsUpdate &&\n this.stateProperties.indexOf(key) > -1\n ) {\n this.group.set('dirty', true);\n }\n }\n return this;\n },\n\n /**\n * Retrieves viewportTransform from Object's canvas if possible\n * @method getViewportTransform\n * @memberOf fabric.Object.prototype\n * @return {Array}\n */\n getViewportTransform: function () {\n if (this.canvas && this.canvas.viewportTransform) {\n return this.canvas.viewportTransform;\n }\n return fabric.iMatrix.concat();\n },\n\n /*\n * @private\n * return if the object would be visible in rendering\n * @memberOf fabric.Object.prototype\n * @return {Boolean}\n */\n isNotVisible: function () {\n return (\n this.opacity === 0 ||\n (!this.width && !this.height && this.strokeWidth === 0) ||\n !this.visible\n );\n },\n\n /**\n * Renders an object on a specified context\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n render: function (ctx) {\n // do not render if width/height are zeros or object is not visible\n if (this.isNotVisible()) {\n return;\n }\n if (\n this.canvas &&\n this.canvas.skipOffscreen &&\n !this.group &&\n !this.isOnScreen()\n ) {\n return;\n }\n ctx.save();\n this._setupCompositeOperation(ctx);\n this.drawSelectionBackground(ctx);\n this.transform(ctx);\n this._setOpacity(ctx);\n this._setShadow(ctx, this);\n if (this.shouldCache()) {\n this.renderCache();\n this.drawCacheOnCanvas(ctx);\n } else {\n this._removeCacheCanvas();\n this.dirty = false;\n this.drawObject(ctx);\n if (this.objectCaching && this.statefullCache) {\n this.saveState({ propertySet: 'cacheProperties' });\n }\n }\n ctx.restore();\n },\n\n renderCache: function (options) {\n options = options || {};\n if (!this._cacheCanvas || !this._cacheContext) {\n this._createCacheCanvas();\n }\n if (this.isCacheDirty()) {\n this.statefullCache &&\n this.saveState({ propertySet: 'cacheProperties' });\n this.drawObject(this._cacheContext, options.forClipping);\n this.dirty = false;\n }\n },\n\n /**\n * Remove cacheCanvas and its dimensions from the objects\n */\n _removeCacheCanvas: function () {\n this._cacheCanvas = null;\n this._cacheContext = null;\n this.cacheWidth = 0;\n this.cacheHeight = 0;\n },\n\n /**\n * return true if the object will draw a stroke\n * Does not consider text styles. This is just a shortcut used at rendering time\n * We want it to be an approximation and be fast.\n * wrote to avoid extra caching, it has to return true when stroke happens,\n * can guess when it will not happen at 100% chance, does not matter if it misses\n * some use case where the stroke is invisible.\n * @since 3.0.0\n * @returns Boolean\n */\n hasStroke: function () {\n return (\n this.stroke && this.stroke !== 'transparent' && this.strokeWidth !== 0\n );\n },\n\n /**\n * return true if the object will draw a fill\n * Does not consider text styles. This is just a shortcut used at rendering time\n * We want it to be an approximation and be fast.\n * wrote to avoid extra caching, it has to return true when fill happens,\n * can guess when it will not happen at 100% chance, does not matter if it misses\n * some use case where the fill is invisible.\n * @since 3.0.0\n * @returns Boolean\n */\n hasFill: function () {\n return this.fill && this.fill !== 'transparent';\n },\n\n /**\n * When set to `true`, force the object to have its own cache, even if it is inside a group\n * it may be needed when your object behave in a particular way on the cache and always needs\n * its own isolated canvas to render correctly.\n * Created to be overridden\n * since 1.7.12\n * @returns Boolean\n */\n needsItsOwnCache: function () {\n if (\n this.paintFirst === 'stroke' &&\n this.hasFill() &&\n this.hasStroke() &&\n typeof this.shadow === 'object'\n ) {\n return true;\n }\n if (this.clipPath) {\n return true;\n }\n return false;\n },\n\n /**\n * Decide if the object should cache or not. Create its own cache level\n * objectCaching is a global flag, wins over everything\n * needsItsOwnCache should be used when the object drawing method requires\n * a cache step. None of the fabric classes requires it.\n * Generally you do not cache objects in groups because the group outside is cached.\n * Read as: cache if is needed, or if the feature is enabled but we are not already caching.\n * @return {Boolean}\n */\n shouldCache: function () {\n this.ownCaching =\n this.needsItsOwnCache() ||\n (this.objectCaching && (!this.group || !this.group.isOnACache()));\n return this.ownCaching;\n },\n\n /**\n * Check if this object or a child object will cast a shadow\n * used by Group.shouldCache to know if child has a shadow recursively\n * @return {Boolean}\n * @deprecated\n */\n willDrawShadow: function () {\n return (\n !!this.shadow &&\n (this.shadow.offsetX !== 0 || this.shadow.offsetY !== 0)\n );\n },\n\n /**\n * Execute the drawing operation for an object clipPath\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {fabric.Object} clipPath\n */\n drawClipPathOnCache: function (ctx, clipPath) {\n ctx.save();\n // DEBUG: uncomment this line, comment the following\n // ctx.globalAlpha = 0.4\n if (clipPath.inverted) {\n ctx.globalCompositeOperation = 'destination-out';\n } else {\n ctx.globalCompositeOperation = 'destination-in';\n }\n //ctx.scale(1 / 2, 1 / 2);\n if (clipPath.absolutePositioned) {\n var m = fabric.util.invertTransform(this.calcTransformMatrix());\n ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]);\n }\n clipPath.transform(ctx);\n ctx.scale(1 / clipPath.zoomX, 1 / clipPath.zoomY);\n ctx.drawImage(\n clipPath._cacheCanvas,\n -clipPath.cacheTranslationX,\n -clipPath.cacheTranslationY\n );\n ctx.restore();\n },\n\n /**\n * Execute the drawing operation for an object on a specified context\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawObject: function (ctx, forClipping) {\n var originalFill = this.fill,\n originalStroke = this.stroke;\n if (forClipping) {\n this.fill = 'black';\n this.stroke = '';\n this._setClippingProperties(ctx);\n } else {\n this._renderBackground(ctx);\n }\n this._render(ctx);\n this._drawClipPath(ctx, this.clipPath);\n this.fill = originalFill;\n this.stroke = originalStroke;\n },\n\n /**\n * Prepare clipPath state and cache and draw it on instance's cache\n * @param {CanvasRenderingContext2D} ctx\n * @param {fabric.Object} clipPath\n */\n _drawClipPath: function (ctx, clipPath) {\n if (!clipPath) {\n return;\n }\n // needed to setup a couple of variables\n // path canvas gets overridden with this one.\n // TODO find a better solution?\n clipPath._set('canvas', this.canvas);\n clipPath.shouldCache();\n clipPath._transformDone = true;\n clipPath.renderCache({ forClipping: true });\n this.drawClipPathOnCache(ctx, clipPath);\n },\n\n /**\n * Paint the cached copy of the object on the target context.\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawCacheOnCanvas: function (ctx) {\n ctx.scale(1 / this.zoomX, 1 / this.zoomY);\n ctx.drawImage(\n this._cacheCanvas,\n -this.cacheTranslationX,\n -this.cacheTranslationY\n );\n },\n\n /**\n * Check if cache is dirty\n * @param {Boolean} skipCanvas skip canvas checks because this object is painted\n * on parent canvas.\n */\n isCacheDirty: function (skipCanvas) {\n if (this.isNotVisible()) {\n return false;\n }\n if (\n this._cacheCanvas &&\n this._cacheContext &&\n !skipCanvas &&\n this._updateCacheCanvas()\n ) {\n // in this case the context is already cleared.\n return true;\n } else {\n if (\n this.dirty ||\n (this.clipPath && this.clipPath.absolutePositioned) ||\n (this.statefullCache && this.hasStateChanged('cacheProperties'))\n ) {\n if (this._cacheCanvas && this._cacheContext && !skipCanvas) {\n var width = this.cacheWidth / this.zoomX;\n var height = this.cacheHeight / this.zoomY;\n this._cacheContext.clearRect(\n -width / 2,\n -height / 2,\n width,\n height\n );\n }\n return true;\n }\n }\n return false;\n },\n\n /**\n * Draws a background for the object big as its untransformed dimensions\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderBackground: function (ctx) {\n if (!this.backgroundColor) {\n return;\n }\n var dim = this._getNonTransformedDimensions();\n ctx.fillStyle = this.backgroundColor;\n\n ctx.fillRect(-dim.x / 2, -dim.y / 2, dim.x, dim.y);\n // if there is background color no other shadows\n // should be casted\n this._removeShadow(ctx);\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _setOpacity: function (ctx) {\n if (this.group && !this.group._transformDone) {\n ctx.globalAlpha = this.getObjectOpacity();\n } else {\n ctx.globalAlpha *= this.opacity;\n }\n },\n\n _setStrokeStyles: function (ctx, decl) {\n var stroke = decl.stroke;\n if (stroke) {\n ctx.lineWidth = decl.strokeWidth;\n ctx.lineCap = decl.strokeLineCap;\n ctx.lineDashOffset = decl.strokeDashOffset;\n ctx.lineJoin = decl.strokeLineJoin;\n ctx.miterLimit = decl.strokeMiterLimit;\n if (stroke.toLive) {\n if (\n stroke.gradientUnits === 'percentage' ||\n stroke.gradientTransform ||\n stroke.patternTransform\n ) {\n // need to transform gradient in a pattern.\n // this is a slow process. If you are hitting this codepath, and the object\n // is not using caching, you should consider switching it on.\n // we need a canvas as big as the current object caching canvas.\n this._applyPatternForTransformedGradient(ctx, stroke);\n } else {\n // is a simple gradient or pattern\n ctx.strokeStyle = stroke.toLive(ctx, this);\n this._applyPatternGradientTransform(ctx, stroke);\n }\n } else {\n // is a color\n ctx.strokeStyle = decl.stroke;\n }\n }\n },\n\n _setFillStyles: function (ctx, decl) {\n var fill = decl.fill;\n if (fill) {\n if (fill.toLive) {\n ctx.fillStyle = fill.toLive(ctx, this);\n this._applyPatternGradientTransform(ctx, decl.fill);\n } else {\n ctx.fillStyle = fill;\n }\n }\n },\n\n _setClippingProperties: function (ctx) {\n ctx.globalAlpha = 1;\n ctx.strokeStyle = 'transparent';\n ctx.fillStyle = '#000000';\n },\n\n /**\n * @private\n * Sets line dash\n * @param {CanvasRenderingContext2D} ctx Context to set the dash line on\n * @param {Array} dashArray array representing dashes\n */\n _setLineDash: function (ctx, dashArray) {\n if (!dashArray || dashArray.length === 0) {\n return;\n }\n // Spec requires the concatenation of two copies the dash list when the number of elements is odd\n if (1 & dashArray.length) {\n dashArray.push.apply(dashArray, dashArray);\n }\n ctx.setLineDash(dashArray);\n },\n\n /**\n * Renders controls and borders for the object\n * the context here is not transformed\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Object} [styleOverride] properties to override the object style\n */\n _renderControls: function (ctx, styleOverride) {\n var vpt = this.getViewportTransform(),\n matrix = this.calcTransformMatrix(),\n options,\n drawBorders,\n drawControls;\n styleOverride = styleOverride || {};\n drawBorders =\n typeof styleOverride.hasBorders !== 'undefined'\n ? styleOverride.hasBorders\n : this.hasBorders;\n drawControls =\n typeof styleOverride.hasControls !== 'undefined'\n ? styleOverride.hasControls\n : this.hasControls;\n matrix = fabric.util.multiplyTransformMatrices(vpt, matrix);\n options = fabric.util.qrDecompose(matrix);\n ctx.save();\n ctx.translate(options.translateX, options.translateY);\n ctx.lineWidth = 1 * this.borderScaleFactor;\n if (!this.group) {\n ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1;\n }\n if (this.flipX) {\n options.angle -= 180;\n }\n ctx.rotate(degreesToRadians(this.group ? options.angle : this.angle));\n drawBorders && this.drawBorders(ctx, options, styleOverride);\n drawControls && this.drawControls(ctx, styleOverride);\n ctx.restore();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _setShadow: function (ctx) {\n if (!this.shadow) {\n return;\n }\n\n var shadow = this.shadow,\n canvas = this.canvas,\n multX = (canvas && canvas.viewportTransform[0]) || 1,\n multY = (canvas && canvas.viewportTransform[3]) || 1,\n scaling = shadow.nonScaling\n ? new Point(1, 1)\n : this.getObjectScaling();\n if (canvas && canvas._isRetinaScaling()) {\n multX *= config.devicePixelRatio;\n multY *= config.devicePixelRatio;\n }\n ctx.shadowColor = shadow.color;\n ctx.shadowBlur =\n (shadow.blur *\n config.browserShadowBlurConstant *\n (multX + multY) *\n (scaling.x + scaling.y)) /\n 4;\n ctx.shadowOffsetX = shadow.offsetX * multX * scaling.x;\n ctx.shadowOffsetY = shadow.offsetY * multY * scaling.y;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _removeShadow: function (ctx) {\n if (!this.shadow) {\n return;\n }\n\n ctx.shadowColor = '';\n ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Object} filler fabric.Pattern or fabric.Gradient\n * @return {Object} offset.offsetX offset for text rendering\n * @return {Object} offset.offsetY offset for text rendering\n */\n _applyPatternGradientTransform: function (ctx, filler) {\n if (!filler || !filler.toLive) {\n return { offsetX: 0, offsetY: 0 };\n }\n var t = filler.gradientTransform || filler.patternTransform;\n var offsetX = -this.width / 2 + filler.offsetX || 0,\n offsetY = -this.height / 2 + filler.offsetY || 0;\n\n if (filler.gradientUnits === 'percentage') {\n ctx.transform(this.width, 0, 0, this.height, offsetX, offsetY);\n } else {\n ctx.transform(1, 0, 0, 1, offsetX, offsetY);\n }\n if (t) {\n ctx.transform(t[0], t[1], t[2], t[3], t[4], t[5]);\n }\n return { offsetX: offsetX, offsetY: offsetY };\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderPaintInOrder: function (ctx) {\n if (this.paintFirst === 'stroke') {\n this._renderStroke(ctx);\n this._renderFill(ctx);\n } else {\n this._renderFill(ctx);\n this._renderStroke(ctx);\n }\n },\n\n /**\n * @private\n * function that actually render something on the context.\n * empty here to allow Obects to work on tests to benchmark fabric functionalites\n * not related to rendering\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (/* ctx */) {},\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderFill: function (ctx) {\n if (!this.fill) {\n return;\n }\n\n ctx.save();\n this._setFillStyles(ctx, this);\n if (this.fillRule === 'evenodd') {\n ctx.fill('evenodd');\n } else {\n ctx.fill();\n }\n ctx.restore();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderStroke: function (ctx) {\n if (!this.stroke || this.strokeWidth === 0) {\n return;\n }\n\n if (this.shadow && !this.shadow.affectStroke) {\n this._removeShadow(ctx);\n }\n\n ctx.save();\n if (this.strokeUniform) {\n var scaling = this.getObjectScaling();\n ctx.scale(1 / scaling.x, 1 / scaling.y);\n }\n this._setLineDash(ctx, this.strokeDashArray);\n this._setStrokeStyles(ctx, this);\n ctx.stroke();\n ctx.restore();\n },\n\n /**\n * This function try to patch the missing gradientTransform on canvas gradients.\n * transforming a context to transform the gradient, is going to transform the stroke too.\n * we want to transform the gradient but not the stroke operation, so we create\n * a transformed gradient on a pattern and then we use the pattern instead of the gradient.\n * this method has drwabacks: is slow, is in low resolution, needs a patch for when the size\n * is limited.\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {fabric.Gradient} filler a fabric gradient instance\n */\n _applyPatternForTransformedGradient: function (ctx, filler) {\n var dims = this._limitCacheSize(this._getCacheCanvasDimensions()),\n pCanvas = fabric.util.createCanvasElement(),\n pCtx,\n retinaScaling = this.canvas.getRetinaScaling(),\n width = dims.x / this.scaleX / retinaScaling,\n height = dims.y / this.scaleY / retinaScaling;\n pCanvas.width = width;\n pCanvas.height = height;\n pCtx = pCanvas.getContext('2d');\n pCtx.beginPath();\n pCtx.moveTo(0, 0);\n pCtx.lineTo(width, 0);\n pCtx.lineTo(width, height);\n pCtx.lineTo(0, height);\n pCtx.closePath();\n pCtx.translate(width / 2, height / 2);\n pCtx.scale(\n dims.zoomX / this.scaleX / retinaScaling,\n dims.zoomY / this.scaleY / retinaScaling\n );\n this._applyPatternGradientTransform(pCtx, filler);\n pCtx.fillStyle = filler.toLive(ctx);\n pCtx.fill();\n ctx.translate(\n -this.width / 2 - this.strokeWidth / 2,\n -this.height / 2 - this.strokeWidth / 2\n );\n ctx.scale(\n (retinaScaling * this.scaleX) / dims.zoomX,\n (retinaScaling * this.scaleY) / dims.zoomY\n );\n ctx.strokeStyle = pCtx.createPattern(pCanvas, 'no-repeat');\n },\n\n /**\n * This function is an helper for svg import. it returns the center of the object in the svg\n * untransformed coordinates\n * @private\n * @return {Object} center point from element coordinates\n */\n _findCenterFromElement: function () {\n return { x: this.left + this.width / 2, y: this.top + this.height / 2 };\n },\n\n /**\n * This function is an helper for svg import. it decompose the transformMatrix\n * and assign properties to object.\n * untransformed coordinates\n * @private\n * @chainable\n */\n _assignTransformMatrixProps: function () {\n if (this.transformMatrix) {\n var options = fabric.util.qrDecompose(this.transformMatrix);\n this.flipX = false;\n this.flipY = false;\n this.set('scaleX', options.scaleX);\n this.set('scaleY', options.scaleY);\n this.angle = options.angle;\n this.skewX = options.skewX;\n this.skewY = 0;\n }\n },\n\n /**\n * This function is an helper for svg import. it removes the transform matrix\n * and set to object properties that fabricjs can handle\n * @private\n * @param {Object} preserveAspectRatioOptions\n * @return {thisArg}\n */\n _removeTransformMatrix: function (preserveAspectRatioOptions) {\n var center = this._findCenterFromElement();\n if (this.transformMatrix) {\n this._assignTransformMatrixProps();\n center = fabric.util.transformPoint(center, this.transformMatrix);\n }\n this.transformMatrix = null;\n if (preserveAspectRatioOptions) {\n this.scaleX *= preserveAspectRatioOptions.scaleX;\n this.scaleY *= preserveAspectRatioOptions.scaleY;\n this.cropX = preserveAspectRatioOptions.cropX;\n this.cropY = preserveAspectRatioOptions.cropY;\n center.x += preserveAspectRatioOptions.offsetLeft;\n center.y += preserveAspectRatioOptions.offsetTop;\n this.width = preserveAspectRatioOptions.width;\n this.height = preserveAspectRatioOptions.height;\n }\n this.setPositionByOrigin(center, 'center', 'center');\n },\n\n /**\n * Clones an instance.\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @returns {Promise}\n */\n clone: function (propertiesToInclude) {\n var objectForm = this.toObject(propertiesToInclude);\n return this.constructor.fromObject(objectForm);\n },\n\n /**\n * Creates an instance of fabric.Image out of an object\n * makes use of toCanvasElement.\n * Once this method was based on toDataUrl and loadImage, so it also had a quality\n * and format option. toCanvasElement is faster and produce no loss of quality.\n * If you need to get a real Jpeg or Png from an object, using toDataURL is the right way to do it.\n * toCanvasElement and then toBlob from the obtained canvas is also a good option.\n * @param {Object} [options] for clone as image, passed to toDataURL\n * @param {Number} [options.multiplier=1] Multiplier to scale by\n * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14\n * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14\n * @param {Number} [options.width] Cropping width. Introduced in v1.2.14\n * @param {Number} [options.height] Cropping height. Introduced in v1.2.14\n * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4\n * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4\n * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2\n * @return {fabric.Image} Object cloned as image.\n */\n cloneAsImage: function (options) {\n var canvasEl = this.toCanvasElement(options);\n return new fabric.Image(canvasEl);\n },\n\n /**\n * Converts an object into a HTMLCanvas element\n * @param {Object} options Options object\n * @param {Number} [options.multiplier=1] Multiplier to scale by\n * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14\n * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14\n * @param {Number} [options.width] Cropping width. Introduced in v1.2.14\n * @param {Number} [options.height] Cropping height. Introduced in v1.2.14\n * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4\n * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4\n * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2\n * @return {HTMLCanvasElement} Returns DOM element with the fabric.Object\n */\n toCanvasElement: function (options) {\n options || (options = {});\n\n var utils = fabric.util,\n origParams = utils.saveObjectTransform(this),\n originalGroup = this.group,\n originalShadow = this.shadow,\n abs = Math.abs,\n retinaScaling = options.enableRetinaScaling\n ? Math.max(config.devicePixelRatio, 1)\n : 1,\n multiplier = (options.multiplier || 1) * retinaScaling;\n delete this.group;\n if (options.withoutTransform) {\n utils.resetObjectTransform(this);\n }\n if (options.withoutShadow) {\n this.shadow = null;\n }\n\n var el = fabric.util.createCanvasElement(),\n // skip canvas zoom and calculate with setCoords now.\n boundingRect = this.getBoundingRect(true, true),\n shadow = this.shadow,\n shadowOffset = { x: 0, y: 0 },\n width,\n height;\n\n if (shadow) {\n var shadowBlur = shadow.blur;\n var scaling = shadow.nonScaling\n ? new Point(1, 1)\n : this.getObjectScaling();\n // consider non scaling shadow.\n shadowOffset.x =\n 2 * Math.round(abs(shadow.offsetX) + shadowBlur) * abs(scaling.x);\n shadowOffset.y =\n 2 * Math.round(abs(shadow.offsetY) + shadowBlur) * abs(scaling.y);\n }\n width = boundingRect.width + shadowOffset.x;\n height = boundingRect.height + shadowOffset.y;\n // if the current width/height is not an integer\n // we need to make it so.\n el.width = Math.ceil(width);\n el.height = Math.ceil(height);\n var canvas = new fabric.StaticCanvas(el, {\n enableRetinaScaling: false,\n renderOnAddRemove: false,\n skipOffscreen: false,\n });\n if (options.format === 'jpeg') {\n canvas.backgroundColor = '#fff';\n }\n this.setPositionByOrigin(\n new Point(canvas.width / 2, canvas.height / 2),\n 'center',\n 'center'\n );\n var originalCanvas = this.canvas;\n canvas._objects = [this];\n this.set('canvas', canvas);\n this.setCoords();\n var canvasEl = canvas.toCanvasElement(multiplier || 1, options);\n this.set('canvas', originalCanvas);\n this.shadow = originalShadow;\n if (originalGroup) {\n this.group = originalGroup;\n }\n this.set(origParams);\n this.setCoords();\n // canvas.dispose will call image.dispose that will nullify the elements\n // since this canvas is a simple element for the process, we remove references\n // to objects in this way in order to avoid object trashing.\n canvas._objects = [];\n // since render has settled it is safe to destroy canvas\n canvas.destroy();\n canvas = null;\n\n return canvasEl;\n },\n\n /**\n * Converts an object into a data-url-like string\n * @param {Object} options Options object\n * @param {String} [options.format=png] The format of the output image. Either \"jpeg\" or \"png\"\n * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg.\n * @param {Number} [options.multiplier=1] Multiplier to scale by\n * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14\n * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14\n * @param {Number} [options.width] Cropping width. Introduced in v1.2.14\n * @param {Number} [options.height] Cropping height. Introduced in v1.2.14\n * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4\n * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4\n * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2\n * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format\n */\n toDataURL: function (options) {\n options || (options = {});\n return fabric.util.toDataURL(\n this.toCanvasElement(options),\n options.format || 'png',\n options.quality || 1\n );\n },\n\n /**\n * Returns true if specified type is identical to the type of an instance\n * @param {String} type Type to check against\n * @return {Boolean}\n */\n isType: function (type) {\n return arguments.length > 1\n ? Array.from(arguments).includes(this.type)\n : this.type === type;\n },\n\n /**\n * Returns complexity of an instance\n * @return {Number} complexity of this instance (is 1 unless subclassed)\n */\n complexity: function () {\n return 1;\n },\n\n /**\n * Returns a JSON representation of an instance\n * @return {Object} JSON\n */\n toJSON: function () {\n // delegate, not alias\n return this.toObject();\n },\n\n /**\n * Sets \"angle\" of an instance with centered rotation\n * @param {Number} angle Angle value (in degrees)\n * @return {fabric.Object} thisArg\n * @chainable\n */\n rotate: function (angle) {\n var shouldCenterOrigin =\n (this.originX !== 'center' || this.originY !== 'center') &&\n this.centeredRotation;\n\n if (shouldCenterOrigin) {\n this._setOriginToCenter();\n }\n\n this.set('angle', angle);\n\n if (shouldCenterOrigin) {\n this._resetOrigin();\n }\n\n return this;\n },\n\n /**\n * Centers object horizontally on canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n centerH: function () {\n this.canvas && this.canvas.centerObjectH(this);\n return this;\n },\n\n /**\n * Centers object horizontally on current viewport of canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n viewportCenterH: function () {\n this.canvas && this.canvas.viewportCenterObjectH(this);\n return this;\n },\n\n /**\n * Centers object vertically on canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n centerV: function () {\n this.canvas && this.canvas.centerObjectV(this);\n return this;\n },\n\n /**\n * Centers object vertically on current viewport of canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n viewportCenterV: function () {\n this.canvas && this.canvas.viewportCenterObjectV(this);\n return this;\n },\n\n /**\n * Centers object vertically and horizontally on canvas to which is was added last\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n center: function () {\n this.canvas && this.canvas.centerObject(this);\n return this;\n },\n\n /**\n * Centers object on current viewport of canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n viewportCenter: function () {\n this.canvas && this.canvas.viewportCenterObject(this);\n return this;\n },\n\n /**\n * This callback function is called by the parent group of an object every\n * time a non-delegated property changes on the group. It is passed the key\n * and value as parameters. Not adding in this function's signature to avoid\n * Travis build error about unused variables.\n */\n setOnGroup: function () {\n // implemented by sub-classes, as needed.\n },\n\n /**\n * Sets canvas globalCompositeOperation for specific object\n * custom composition operation for the particular object can be specified using globalCompositeOperation property\n * @param {CanvasRenderingContext2D} ctx Rendering canvas context\n */\n _setupCompositeOperation: function (ctx) {\n if (this.globalCompositeOperation) {\n ctx.globalCompositeOperation = this.globalCompositeOperation;\n }\n },\n\n /**\n * cancel instance's running animations\n * override if necessary to dispose artifacts such as `clipPath`\n */\n dispose: function () {\n // todo verify this.\n // runningAnimations is always truthy\n if (runningAnimations) {\n runningAnimations.cancelByTarget(this);\n }\n },\n }\n );\n\n fabric.util.createAccessors && fabric.util.createAccessors(fabric.Object);\n\n extend(fabric.Object.prototype, fabric.Observable);\n\n /**\n *\n * @param {Function} klass\n * @param {object} object\n * @param {object} [options]\n * @param {string} [options.extraParam] property to pass as first argument to the constructor\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Object._fromObject = function (\n klass,\n object,\n { extraParam, ...options } = {}\n ) {\n return enlivenObjectEnlivables(clone(object, true), options).then(\n (enlivedMap) => {\n // from the resulting enlived options, extract options.extraParam to arg0\n // to avoid accidental overrides later\n const { [extraParam]: arg0, ...rest } = { ...options, ...enlivedMap };\n return extraParam ? new klass(arg0, rest) : new klass(rest);\n }\n );\n };\n\n /**\n *\n * @static\n * @memberOf fabric.Object\n * @param {object} object\n * @param {object} [options]\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Object.fromObject = function (object, options) {\n return fabric.Object._fromObject(fabric.Object, object, options);\n };\n\n /**\n * Unique id used internally when creating SVG elements\n * @static\n * @memberOf fabric.Object\n * @type Number\n */\n fabric.Object.__uid = 0;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\n(function (global) {\n var fabric = global.fabric,\n degreesToRadians = fabric.util.degreesToRadians,\n originXOffset = {\n left: -0.5,\n center: 0,\n right: 0.5,\n },\n originYOffset = {\n top: -0.5,\n center: 0,\n bottom: 0.5,\n };\n\n /**\n * @typedef {number | 'left' | 'center' | 'right'} OriginX\n * @typedef {number | 'top' | 'center' | 'bottom'} OriginY\n */\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Resolves origin value relative to center\n * @private\n * @param {OriginX} originX\n * @returns number\n */\n resolveOriginX: function (originX) {\n return typeof originX === 'string'\n ? originXOffset[originX]\n : originX - 0.5;\n },\n\n /**\n * Resolves origin value relative to center\n * @private\n * @param {OriginY} originY\n * @returns number\n */\n resolveOriginY: function (originY) {\n return typeof originY === 'string'\n ? originYOffset[originY]\n : originY - 0.5;\n },\n\n /**\n * Translates the coordinates from a set of origin to another (based on the object's dimensions)\n * @param {Point} point The point which corresponds to the originX and originY params\n * @param {OriginX} fromOriginX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} fromOriginY Vertical origin: 'top', 'center' or 'bottom'\n * @param {OriginX} toOriginX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} toOriginY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n translateToGivenOrigin: function (\n point,\n fromOriginX,\n fromOriginY,\n toOriginX,\n toOriginY\n ) {\n var x = point.x,\n y = point.y,\n dim,\n offsetX =\n this.resolveOriginX(toOriginX) - this.resolveOriginX(fromOriginX),\n offsetY =\n this.resolveOriginY(toOriginY) - this.resolveOriginY(fromOriginY);\n\n if (offsetX || offsetY) {\n dim = this._getTransformedDimensions();\n x = point.x + offsetX * dim.x;\n y = point.y + offsetY * dim.y;\n }\n\n return new Point(x, y);\n },\n\n /**\n * Translates the coordinates from origin to center coordinates (based on the object's dimensions)\n * @param {Point} point The point which corresponds to the originX and originY params\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n translateToCenterPoint: function (point, originX, originY) {\n var p = this.translateToGivenOrigin(\n point,\n originX,\n originY,\n 'center',\n 'center'\n );\n if (this.angle) {\n return fabric.util.rotatePoint(\n p,\n point,\n degreesToRadians(this.angle)\n );\n }\n return p;\n },\n\n /**\n * Translates the coordinates from center to origin coordinates (based on the object's dimensions)\n * @param {Point} center The point which corresponds to center of the object\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n translateToOriginPoint: function (center, originX, originY) {\n var p = this.translateToGivenOrigin(\n center,\n 'center',\n 'center',\n originX,\n originY\n );\n if (this.angle) {\n return fabric.util.rotatePoint(\n p,\n center,\n degreesToRadians(this.angle)\n );\n }\n return p;\n },\n\n /**\n * Returns the center coordinates of the object relative to canvas\n * @return {Point}\n */\n getCenterPoint: function () {\n var relCenter = this.getRelativeCenterPoint();\n return this.group\n ? fabric.util.transformPoint(\n relCenter,\n this.group.calcTransformMatrix()\n )\n : relCenter;\n },\n\n /**\n * Returns the center coordinates of the object relative to it's containing group or null\n * @return {Point|null} point or null of object has no parent group\n */\n getCenterPointRelativeToParent: function () {\n return this.group ? this.getRelativeCenterPoint() : null;\n },\n\n /**\n * Returns the center coordinates of the object relative to it's parent\n * @return {Point}\n */\n getRelativeCenterPoint: function () {\n return this.translateToCenterPoint(\n new Point(this.left, this.top),\n this.originX,\n this.originY\n );\n },\n\n /**\n * Returns the coordinates of the object based on center coordinates\n * @param {Point} point The point which corresponds to the originX and originY params\n * @return {Point}\n */\n // getOriginPoint: function(center) {\n // return this.translateToOriginPoint(center, this.originX, this.originY);\n // },\n\n /**\n * Returns the coordinates of the object as if it has a different origin\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n getPointByOrigin: function (originX, originY) {\n var center = this.getRelativeCenterPoint();\n return this.translateToOriginPoint(center, originX, originY);\n },\n\n /**\n * Returns the normalized point (rotated relative to center) in local coordinates\n * @param {Point} point The point relative to instance coordinate system\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n normalizePoint: function (point, originX, originY) {\n var center = this.getRelativeCenterPoint(),\n p,\n p2;\n if (typeof originX !== 'undefined' && typeof originY !== 'undefined') {\n p = this.translateToGivenOrigin(\n center,\n 'center',\n 'center',\n originX,\n originY\n );\n } else {\n p = new Point(this.left, this.top);\n }\n\n p2 = new Point(point.x, point.y);\n if (this.angle) {\n p2 = fabric.util.rotatePoint(\n p2,\n center,\n -degreesToRadians(this.angle)\n );\n }\n return p2.subtract(p);\n },\n\n /**\n * Returns coordinates of a pointer relative to object's top left corner in object's plane\n * @param {Event} e Event to operate upon\n * @param {Object} [pointer] Pointer to operate upon (instead of event)\n * @return {Object} Coordinates of a pointer (x, y)\n */\n getLocalPointer: function (e, pointer) {\n pointer = pointer || this.canvas.getPointer(e);\n return fabric.util\n .transformPoint(\n new Point(pointer.x, pointer.y),\n fabric.util.invertTransform(this.calcTransformMatrix())\n )\n .add(new Point(this.width / 2, this.height / 2));\n },\n\n /**\n * Returns the point in global coordinates\n * @param {Point} The point relative to the local coordinate system\n * @return {Point}\n */\n // toGlobalPoint: function(point) {\n // return fabric.util.rotatePoint(point, this.getCenterPoint(), degreesToRadians(this.angle)).add(new Point(this.left, this.top));\n // },\n\n /**\n * Sets the position of the object taking into consideration the object's origin\n * @param {Point} pos The new position of the object\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {void}\n */\n setPositionByOrigin: function (pos, originX, originY) {\n var center = this.translateToCenterPoint(pos, originX, originY),\n position = this.translateToOriginPoint(\n center,\n this.originX,\n this.originY\n );\n this.set('left', position.x);\n this.set('top', position.y);\n },\n\n /**\n * @param {String} to One of 'left', 'center', 'right'\n */\n adjustPosition: function (to) {\n var angle = degreesToRadians(this.angle),\n hypotFull = this.getScaledWidth(),\n xFull = fabric.util.cos(angle) * hypotFull,\n yFull = fabric.util.sin(angle) * hypotFull,\n offsetFrom,\n offsetTo;\n\n //TODO: this function does not consider mixed situation like top, center.\n if (typeof this.originX === 'string') {\n offsetFrom = originXOffset[this.originX];\n } else {\n offsetFrom = this.originX - 0.5;\n }\n if (typeof to === 'string') {\n offsetTo = originXOffset[to];\n } else {\n offsetTo = to - 0.5;\n }\n this.left += xFull * (offsetTo - offsetFrom);\n this.top += yFull * (offsetTo - offsetFrom);\n this.setCoords();\n this.originX = to;\n },\n\n /**\n * Sets the origin/position of the object to it's center point\n * @private\n * @return {void}\n */\n _setOriginToCenter: function () {\n this._originalOriginX = this.originX;\n this._originalOriginY = this.originY;\n\n var center = this.getRelativeCenterPoint();\n\n this.originX = 'center';\n this.originY = 'center';\n\n this.left = center.x;\n this.top = center.y;\n },\n\n /**\n * Resets the origin/position of the object to it's original origin\n * @private\n * @return {void}\n */\n _resetOrigin: function () {\n var originPoint = this.translateToOriginPoint(\n this.getRelativeCenterPoint(),\n this._originalOriginX,\n this._originalOriginY\n );\n\n this.originX = this._originalOriginX;\n this.originY = this._originalOriginY;\n\n this.left = originPoint.x;\n this.top = originPoint.y;\n\n this._originalOriginX = null;\n this._originalOriginY = null;\n },\n\n /**\n * @private\n */\n _getLeftTopCoords: function () {\n return this.translateToOriginPoint(\n this.getRelativeCenterPoint(),\n 'left',\n 'top'\n );\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Intersection } from '../intersection.class';\nimport { Point } from '../point.class';\n\n(function (global) {\n function arrayFromCoords(coords) {\n return [\n new Point(coords.tl.x, coords.tl.y),\n new Point(coords.tr.x, coords.tr.y),\n new Point(coords.br.x, coords.br.y),\n new Point(coords.bl.x, coords.bl.y),\n ];\n }\n\n var fabric = global.fabric,\n util = fabric.util,\n degreesToRadians = util.degreesToRadians,\n multiplyMatrices = util.multiplyTransformMatrices,\n transformPoint = util.transformPoint;\n\n util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Describe object's corner position in canvas element coordinates.\n * properties are depending on control keys and padding the main controls.\n * each property is an object with x, y and corner.\n * The `corner` property contains in a similar manner the 4 points of the\n * interactive area of the corner.\n * The coordinates depends from the controls positionHandler and are used\n * to draw and locate controls\n * @memberOf fabric.Object.prototype\n */\n oCoords: null,\n\n /**\n * Describe object's corner position in canvas object absolute coordinates\n * properties are tl,tr,bl,br and describe the four main corner.\n * each property is an object with x, y, instance of Fabric.Point.\n * The coordinates depends from this properties: width, height, scaleX, scaleY\n * skewX, skewY, angle, strokeWidth, top, left.\n * Those coordinates are useful to understand where an object is. They get updated\n * with oCoords but they do not need to be updated when zoom or panning change.\n * The coordinates get updated with @method setCoords.\n * You can calculate them without updating with @method calcACoords();\n * @memberOf fabric.Object.prototype\n */\n aCoords: null,\n\n /**\n * Describe object's corner position in canvas element coordinates.\n * includes padding. Used of object detection.\n * set and refreshed with setCoords.\n * @memberOf fabric.Object.prototype\n */\n lineCoords: null,\n\n /**\n * storage for object transform matrix\n */\n ownMatrixCache: null,\n\n /**\n * storage for object full transform matrix\n */\n matrixCache: null,\n\n /**\n * custom controls interface\n * controls are added by default_controls.js\n */\n controls: {},\n\n /**\n * @returns {number} x position according to object's {@link fabric.Object#originX} property in canvas coordinate plane\n */\n getX: function () {\n return this.getXY().x;\n },\n\n /**\n * @param {number} value x position according to object's {@link fabric.Object#originX} property in canvas coordinate plane\n */\n setX: function (value) {\n this.setXY(this.getXY().setX(value));\n },\n\n /**\n * @returns {number} x position according to object's {@link fabric.Object#originX} property in parent's coordinate plane\\\n * if parent is canvas then this property is identical to {@link fabric.Object#getX}\n */\n getRelativeX: function () {\n return this.left;\n },\n\n /**\n * @param {number} value x position according to object's {@link fabric.Object#originX} property in parent's coordinate plane\\\n * if parent is canvas then this method is identical to {@link fabric.Object#setX}\n */\n setRelativeX: function (value) {\n this.left = value;\n },\n\n /**\n * @returns {number} y position according to object's {@link fabric.Object#originY} property in canvas coordinate plane\n */\n getY: function () {\n return this.getXY().y;\n },\n\n /**\n * @param {number} value y position according to object's {@link fabric.Object#originY} property in canvas coordinate plane\n */\n setY: function (value) {\n this.setXY(this.getXY().setY(value));\n },\n\n /**\n * @returns {number} y position according to object's {@link fabric.Object#originY} property in parent's coordinate plane\\\n * if parent is canvas then this property is identical to {@link fabric.Object#getY}\n */\n getRelativeY: function () {\n return this.top;\n },\n\n /**\n * @param {number} value y position according to object's {@link fabric.Object#originY} property in parent's coordinate plane\\\n * if parent is canvas then this property is identical to {@link fabric.Object#setY}\n */\n setRelativeY: function (value) {\n this.top = value;\n },\n\n /**\n * @returns {number} x position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in canvas coordinate plane\n */\n getXY: function () {\n var relativePosition = this.getRelativeXY();\n return this.group\n ? fabric.util.transformPoint(\n relativePosition,\n this.group.calcTransformMatrix()\n )\n : relativePosition;\n },\n\n /**\n * Set an object position to a particular point, the point is intended in absolute ( canvas ) coordinate.\n * You can specify {@link fabric.Object#originX} and {@link fabric.Object#originY} values,\n * that otherwise are the object's current values.\n * @example Set object's bottom left corner to point (5,5) on canvas\n * object.setXY(new Point(5, 5), 'left', 'bottom').\n * @param {Point} point position in canvas coordinate plane\n * @param {'left'|'center'|'right'|number} [originX] Horizontal origin: 'left', 'center' or 'right'\n * @param {'top'|'center'|'bottom'|number} [originY] Vertical origin: 'top', 'center' or 'bottom'\n */\n setXY: function (point, originX, originY) {\n if (this.group) {\n point = fabric.util.transformPoint(\n point,\n fabric.util.invertTransform(this.group.calcTransformMatrix())\n );\n }\n this.setRelativeXY(point, originX, originY);\n },\n\n /**\n * @returns {number} x position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in parent's coordinate plane\n */\n getRelativeXY: function () {\n return new Point(this.left, this.top);\n },\n\n /**\n * As {@link fabric.Object#setXY}, but in current parent's coordinate plane ( the current group if any or the canvas)\n * @param {Point} point position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in parent's coordinate plane\n * @param {'left'|'center'|'right'|number} [originX] Horizontal origin: 'left', 'center' or 'right'\n * @param {'top'|'center'|'bottom'|number} [originY] Vertical origin: 'top', 'center' or 'bottom'\n */\n setRelativeXY: function (point, originX, originY) {\n this.setPositionByOrigin(\n point,\n originX || this.originX,\n originY || this.originY\n );\n },\n\n /**\n * return correct set of coordinates for intersection\n * this will return either aCoords or lineCoords.\n * @param {Boolean} absolute will return aCoords if true or lineCoords\n * @return {Object} {tl, tr, br, bl} points\n */\n _getCoords: function (absolute, calculate) {\n if (calculate) {\n return absolute ? this.calcACoords() : this.calcLineCoords();\n }\n if (!this.aCoords || !this.lineCoords) {\n this.setCoords(true);\n }\n return absolute ? this.aCoords : this.lineCoords;\n },\n\n /**\n * return correct set of coordinates for intersection\n * this will return either aCoords or lineCoords.\n * The coords are returned in an array.\n * @return {Array} [tl, tr, br, bl] of points\n */\n getCoords: function (absolute, calculate) {\n var coords = arrayFromCoords(this._getCoords(absolute, calculate));\n if (this.group) {\n var t = this.group.calcTransformMatrix();\n return coords.map(function (p) {\n return util.transformPoint(p, t);\n });\n }\n return coords;\n },\n\n /**\n * Checks if object intersects with an area formed by 2 points\n * @param {Object} pointTL top-left point of area\n * @param {Object} pointBR bottom-right point of area\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object intersects with an area formed by 2 points\n */\n intersectsWithRect: function (pointTL, pointBR, absolute, calculate) {\n var coords = this.getCoords(absolute, calculate),\n intersection = fabric.Intersection.intersectPolygonRectangle(\n coords,\n pointTL,\n pointBR\n );\n return intersection.status === 'Intersection';\n },\n\n /**\n * Checks if object intersects with another object\n * @param {Object} other Object to test\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object intersects with another object\n */\n intersectsWithObject: function (other, absolute, calculate) {\n var intersection = Intersection.intersectPolygonPolygon(\n this.getCoords(absolute, calculate),\n other.getCoords(absolute, calculate)\n );\n\n return (\n intersection.status === 'Intersection' ||\n intersection.status === 'Coincident' ||\n other.isContainedWithinObject(this, absolute, calculate) ||\n this.isContainedWithinObject(other, absolute, calculate)\n );\n },\n\n /**\n * Checks if object is fully contained within area of another object\n * @param {Object} other Object to test\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object is fully contained within area of another object\n */\n isContainedWithinObject: function (other, absolute, calculate) {\n var points = this.getCoords(absolute, calculate),\n otherCoords = absolute ? other.aCoords : other.lineCoords,\n i = 0,\n lines = other._getImageLines(otherCoords);\n for (; i < 4; i++) {\n if (!other.containsPoint(points[i], lines)) {\n return false;\n }\n }\n return true;\n },\n\n /**\n * Checks if object is fully contained within area formed by 2 points\n * @param {Object} pointTL top-left point of area\n * @param {Object} pointBR bottom-right point of area\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object is fully contained within area formed by 2 points\n */\n isContainedWithinRect: function (pointTL, pointBR, absolute, calculate) {\n var boundingRect = this.getBoundingRect(absolute, calculate);\n\n return (\n boundingRect.left >= pointTL.x &&\n boundingRect.left + boundingRect.width <= pointBR.x &&\n boundingRect.top >= pointTL.y &&\n boundingRect.top + boundingRect.height <= pointBR.y\n );\n },\n\n /**\n * Checks if point is inside the object\n * @param {Point} point Point to check against\n * @param {Object} [lines] object returned from @method _getImageLines\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if point is inside the object\n */\n containsPoint: function (point, lines, absolute, calculate) {\n var coords = this._getCoords(absolute, calculate),\n lines = lines || this._getImageLines(coords),\n xPoints = this._findCrossPoints(point, lines);\n // if xPoints is odd then point is inside the object\n return xPoints !== 0 && xPoints % 2 === 1;\n },\n\n /**\n * Checks if object is contained within the canvas with current viewportTransform\n * the check is done stopping at first point that appears on screen\n * @param {Boolean} [calculate] use coordinates of current position instead of .aCoords\n * @return {Boolean} true if object is fully or partially contained within canvas\n */\n isOnScreen: function (calculate) {\n if (!this.canvas) {\n return false;\n }\n var pointTL = this.canvas.vptCoords.tl,\n pointBR = this.canvas.vptCoords.br;\n var points = this.getCoords(true, calculate);\n // if some point is on screen, the object is on screen.\n if (\n points.some(function (point) {\n return (\n point.x <= pointBR.x &&\n point.x >= pointTL.x &&\n point.y <= pointBR.y &&\n point.y >= pointTL.y\n );\n })\n ) {\n return true;\n }\n // no points on screen, check intersection with absolute coordinates\n if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) {\n return true;\n }\n return this._containsCenterOfCanvas(pointTL, pointBR, calculate);\n },\n\n /**\n * Checks if the object contains the midpoint between canvas extremities\n * Does not make sense outside the context of isOnScreen and isPartiallyOnScreen\n * @private\n * @param {Fabric.Point} pointTL Top Left point\n * @param {Fabric.Point} pointBR Top Right point\n * @param {Boolean} calculate use coordinates of current position instead of .oCoords\n * @return {Boolean} true if the object contains the point\n */\n _containsCenterOfCanvas: function (pointTL, pointBR, calculate) {\n // worst case scenario the object is so big that contains the screen\n var centerPoint = {\n x: (pointTL.x + pointBR.x) / 2,\n y: (pointTL.y + pointBR.y) / 2,\n };\n if (this.containsPoint(centerPoint, null, true, calculate)) {\n return true;\n }\n return false;\n },\n\n /**\n * Checks if object is partially contained within the canvas with current viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object is partially contained within canvas\n */\n isPartiallyOnScreen: function (calculate) {\n if (!this.canvas) {\n return false;\n }\n var pointTL = this.canvas.vptCoords.tl,\n pointBR = this.canvas.vptCoords.br;\n if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) {\n return true;\n }\n var allPointsAreOutside = this.getCoords(true, calculate).every(\n function (point) {\n return (\n (point.x >= pointBR.x || point.x <= pointTL.x) &&\n (point.y >= pointBR.y || point.y <= pointTL.y)\n );\n }\n );\n return (\n allPointsAreOutside &&\n this._containsCenterOfCanvas(pointTL, pointBR, calculate)\n );\n },\n\n /**\n * Method that returns an object with the object edges in it, given the coordinates of the corners\n * @private\n * @param {Object} oCoords Coordinates of the object corners\n */\n _getImageLines: function (oCoords) {\n var lines = {\n topline: {\n o: oCoords.tl,\n d: oCoords.tr,\n },\n rightline: {\n o: oCoords.tr,\n d: oCoords.br,\n },\n bottomline: {\n o: oCoords.br,\n d: oCoords.bl,\n },\n leftline: {\n o: oCoords.bl,\n d: oCoords.tl,\n },\n };\n\n // // debugging\n // if (this.canvas.contextTop) {\n // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2);\n // }\n\n return lines;\n },\n\n /**\n * Helper method to determine how many cross points are between the 4 object edges\n * and the horizontal line determined by a point on canvas\n * @private\n * @param {Point} point Point to check\n * @param {Object} lines Coordinates of the object being evaluated\n */\n // remove yi, not used but left code here just in case.\n _findCrossPoints: function (point, lines) {\n var b1,\n b2,\n a1,\n a2,\n xi, // yi,\n xcount = 0,\n iLine;\n\n for (var lineKey in lines) {\n iLine = lines[lineKey];\n // optimisation 1: line below point. no cross\n if (iLine.o.y < point.y && iLine.d.y < point.y) {\n continue;\n }\n // optimisation 2: line above point. no cross\n if (iLine.o.y >= point.y && iLine.d.y >= point.y) {\n continue;\n }\n // optimisation 3: vertical line case\n if (iLine.o.x === iLine.d.x && iLine.o.x >= point.x) {\n xi = iLine.o.x;\n // yi = point.y;\n }\n // calculate the intersection point\n else {\n b1 = 0;\n b2 = (iLine.d.y - iLine.o.y) / (iLine.d.x - iLine.o.x);\n a1 = point.y - b1 * point.x;\n a2 = iLine.o.y - b2 * iLine.o.x;\n\n xi = -(a1 - a2) / (b1 - b2);\n // yi = a1 + b1 * xi;\n }\n // dont count xi < point.x cases\n if (xi >= point.x) {\n xcount += 1;\n }\n // optimisation 4: specific for square images\n if (xcount === 2) {\n break;\n }\n }\n return xcount;\n },\n\n /**\n * Returns coordinates of object's bounding rectangle (left, top, width, height)\n * the box is intended as aligned to axis of canvas.\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords / .aCoords\n * @return {Object} Object with left, top, width, height properties\n */\n getBoundingRect: function (absolute, calculate) {\n var coords = this.getCoords(absolute, calculate);\n return util.makeBoundingBoxFromPoints(coords);\n },\n\n /**\n * Returns width of an object's bounding box counting transformations\n * before 2.0 it was named getWidth();\n * @return {Number} width value\n */\n getScaledWidth: function () {\n return this._getTransformedDimensions().x;\n },\n\n /**\n * Returns height of an object bounding box counting transformations\n * before 2.0 it was named getHeight();\n * @return {Number} height value\n */\n getScaledHeight: function () {\n return this._getTransformedDimensions().y;\n },\n\n /**\n * Makes sure the scale is valid and modifies it if necessary\n * @private\n * @param {Number} value\n * @return {Number}\n */\n _constrainScale: function (value) {\n if (Math.abs(value) < this.minScaleLimit) {\n if (value < 0) {\n return -this.minScaleLimit;\n } else {\n return this.minScaleLimit;\n }\n } else if (value === 0) {\n return 0.0001;\n }\n return value;\n },\n\n /**\n * Scales an object (equally by x and y)\n * @param {Number} value Scale factor\n * @return {fabric.Object} thisArg\n * @chainable\n */\n scale: function (value) {\n this._set('scaleX', value);\n this._set('scaleY', value);\n return this.setCoords();\n },\n\n /**\n * Scales an object to a given width, with respect to bounding box (scaling by x/y equally)\n * @param {Number} value New width value\n * @param {Boolean} absolute ignore viewport\n * @return {fabric.Object} thisArg\n * @chainable\n */\n scaleToWidth: function (value, absolute) {\n // adjust to bounding rect factor so that rotated shapes would fit as well\n var boundingRectFactor =\n this.getBoundingRect(absolute).width / this.getScaledWidth();\n return this.scale(value / this.width / boundingRectFactor);\n },\n\n /**\n * Scales an object to a given height, with respect to bounding box (scaling by x/y equally)\n * @param {Number} value New height value\n * @param {Boolean} absolute ignore viewport\n * @return {fabric.Object} thisArg\n * @chainable\n */\n scaleToHeight: function (value, absolute) {\n // adjust to bounding rect factor so that rotated shapes would fit as well\n var boundingRectFactor =\n this.getBoundingRect(absolute).height / this.getScaledHeight();\n return this.scale(value / this.height / boundingRectFactor);\n },\n\n calcLineCoords: function () {\n var vpt = this.getViewportTransform(),\n padding = this.padding,\n angle = degreesToRadians(this.getTotalAngle()),\n cos = util.cos(angle),\n sin = util.sin(angle),\n cosP = cos * padding,\n sinP = sin * padding,\n cosPSinP = cosP + sinP,\n cosPMinusSinP = cosP - sinP,\n aCoords = this.calcACoords();\n\n var lineCoords = {\n tl: transformPoint(aCoords.tl, vpt),\n tr: transformPoint(aCoords.tr, vpt),\n bl: transformPoint(aCoords.bl, vpt),\n br: transformPoint(aCoords.br, vpt),\n };\n\n if (padding) {\n lineCoords.tl.x -= cosPMinusSinP;\n lineCoords.tl.y -= cosPSinP;\n lineCoords.tr.x += cosPSinP;\n lineCoords.tr.y -= cosPMinusSinP;\n lineCoords.bl.x -= cosPSinP;\n lineCoords.bl.y += cosPMinusSinP;\n lineCoords.br.x += cosPMinusSinP;\n lineCoords.br.y += cosPSinP;\n }\n\n return lineCoords;\n },\n\n calcOCoords: function () {\n var vpt = this.getViewportTransform(),\n center = this.getCenterPoint(),\n tMatrix = [1, 0, 0, 1, center.x, center.y],\n rMatrix = util.calcRotateMatrix({\n angle:\n this.getTotalAngle() - (!!this.group && this.flipX ? 180 : 0),\n }),\n positionMatrix = multiplyMatrices(tMatrix, rMatrix),\n startMatrix = multiplyMatrices(vpt, positionMatrix),\n finalMatrix = multiplyMatrices(startMatrix, [\n 1 / vpt[0],\n 0,\n 0,\n 1 / vpt[3],\n 0,\n 0,\n ]),\n transformOptions = this.group\n ? fabric.util.qrDecompose(this.calcTransformMatrix())\n : undefined,\n dim = this._calculateCurrentDimensions(transformOptions),\n coords = {};\n this.forEachControl(function (control, key, fabricObject) {\n coords[key] = control.positionHandler(dim, finalMatrix, fabricObject);\n });\n\n // debug code\n /*\n var canvas = this.canvas;\n setTimeout(function () {\n if (!canvas) return;\n canvas.contextTop.clearRect(0, 0, 700, 700);\n canvas.contextTop.fillStyle = 'green';\n Object.keys(coords).forEach(function(key) {\n var control = coords[key];\n canvas.contextTop.fillRect(control.x, control.y, 3, 3);\n });\n }, 50);\n */\n return coords;\n },\n\n calcACoords: function () {\n var rotateMatrix = util.calcRotateMatrix({ angle: this.angle }),\n center = this.getRelativeCenterPoint(),\n translateMatrix = [1, 0, 0, 1, center.x, center.y],\n finalMatrix = multiplyMatrices(translateMatrix, rotateMatrix),\n dim = this._getTransformedDimensions(),\n w = dim.x / 2,\n h = dim.y / 2;\n return {\n // corners\n tl: transformPoint({ x: -w, y: -h }, finalMatrix),\n tr: transformPoint({ x: w, y: -h }, finalMatrix),\n bl: transformPoint({ x: -w, y: h }, finalMatrix),\n br: transformPoint({ x: w, y: h }, finalMatrix),\n };\n },\n\n /**\n * Sets corner and controls position coordinates based on current angle, width and height, left and top.\n * oCoords are used to find the corners\n * aCoords are used to quickly find an object on the canvas\n * lineCoords are used to quickly find object during pointer events.\n * See {@link https://github.com/fabricjs/fabric.js/wiki/When-to-call-setCoords} and {@link http://fabricjs.com/fabric-gotchas}\n *\n * @param {Boolean} [skipCorners] skip calculation of oCoords.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n setCoords: function (skipCorners) {\n this.aCoords = this.calcACoords();\n // in case we are in a group, for how the inner group target check works,\n // lineCoords are exactly aCoords. Since the vpt gets absorbed by the normalized pointer.\n this.lineCoords = this.group ? this.aCoords : this.calcLineCoords();\n if (skipCorners) {\n return this;\n }\n // set coordinates of the draggable boxes in the corners used to scale/rotate the image\n this.oCoords = this.calcOCoords();\n this._setCornerCoords && this._setCornerCoords();\n return this;\n },\n\n transformMatrixKey: function (skipGroup) {\n var sep = '_',\n prefix = '';\n if (!skipGroup && this.group) {\n prefix = this.group.transformMatrixKey(skipGroup) + sep;\n }\n return (\n prefix +\n this.top +\n sep +\n this.left +\n sep +\n this.scaleX +\n sep +\n this.scaleY +\n sep +\n this.skewX +\n sep +\n this.skewY +\n sep +\n this.angle +\n sep +\n this.originX +\n sep +\n this.originY +\n sep +\n this.width +\n sep +\n this.height +\n sep +\n this.strokeWidth +\n this.flipX +\n this.flipY\n );\n },\n\n /**\n * calculate transform matrix that represents the current transformations from the\n * object's properties.\n * @param {Boolean} [skipGroup] return transform matrix for object not counting parent transformations\n * There are some situation in which this is useful to avoid the fake rotation.\n * @return {Array} transform matrix for the object\n */\n calcTransformMatrix: function (skipGroup) {\n var matrix = this.calcOwnMatrix();\n if (skipGroup || !this.group) {\n return matrix;\n }\n var key = this.transformMatrixKey(skipGroup),\n cache = this.matrixCache || (this.matrixCache = {});\n if (cache.key === key) {\n return cache.value;\n }\n if (this.group) {\n matrix = multiplyMatrices(\n this.group.calcTransformMatrix(false),\n matrix\n );\n }\n cache.key = key;\n cache.value = matrix;\n return matrix;\n },\n\n /**\n * calculate transform matrix that represents the current transformations from the\n * object's properties, this matrix does not include the group transformation\n * @return {Array} transform matrix for the object\n */\n calcOwnMatrix: function () {\n var key = this.transformMatrixKey(true),\n cache = this.ownMatrixCache || (this.ownMatrixCache = {});\n if (cache.key === key) {\n return cache.value;\n }\n var center = this.getRelativeCenterPoint(),\n options = {\n angle: this.angle,\n translateX: center.x,\n translateY: center.y,\n scaleX: this.scaleX,\n scaleY: this.scaleY,\n skewX: this.skewX,\n skewY: this.skewY,\n flipX: this.flipX,\n flipY: this.flipY,\n };\n cache.key = key;\n cache.value = util.composeMatrix(options);\n return cache.value;\n },\n\n /**\n * Calculate object dimensions from its properties\n * @private\n * @returns {Point} dimensions\n */\n _getNonTransformedDimensions: function () {\n return new Point(this.width, this.height).scalarAdd(this.strokeWidth);\n },\n\n /**\n * Calculate object bounding box dimensions from its properties scale, skew.\n * @param {Object} [options]\n * @param {Number} [options.scaleX]\n * @param {Number} [options.scaleY]\n * @param {Number} [options.skewX]\n * @param {Number} [options.skewY]\n * @private\n * @returns {Point} dimensions\n */\n _getTransformedDimensions: function (options) {\n options = Object.assign(\n {\n scaleX: this.scaleX,\n scaleY: this.scaleY,\n skewX: this.skewX,\n skewY: this.skewY,\n width: this.width,\n height: this.height,\n strokeWidth: this.strokeWidth,\n },\n options || {}\n );\n // stroke is applied before/after transformations are applied according to `strokeUniform`\n var preScalingStrokeValue,\n postScalingStrokeValue,\n strokeWidth = options.strokeWidth;\n if (this.strokeUniform) {\n preScalingStrokeValue = 0;\n postScalingStrokeValue = strokeWidth;\n } else {\n preScalingStrokeValue = strokeWidth;\n postScalingStrokeValue = 0;\n }\n var dimX = options.width + preScalingStrokeValue,\n dimY = options.height + preScalingStrokeValue,\n finalDimensions,\n noSkew = options.skewX === 0 && options.skewY === 0;\n if (noSkew) {\n finalDimensions = new Point(\n dimX * options.scaleX,\n dimY * options.scaleY\n );\n } else {\n var bbox = util.sizeAfterTransform(dimX, dimY, options);\n finalDimensions = new Point(bbox.x, bbox.y);\n }\n\n return finalDimensions.scalarAdd(postScalingStrokeValue);\n },\n\n /**\n * Calculate object dimensions for controls box, including padding and canvas zoom.\n * and active selection\n * @private\n * @param {object} [options] transform options\n * @returns {Point} dimensions\n */\n _calculateCurrentDimensions: function (options) {\n var vpt = this.getViewportTransform(),\n dim = this._getTransformedDimensions(options),\n p = transformPoint(dim, vpt, true);\n return p.scalarAdd(2 * this.padding);\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Checks if object is decendant of target\n * Should be used instead of @link {fabric.Collection.contains} for performance reasons\n * @param {fabric.Object|fabric.StaticCanvas} target\n * @returns {boolean}\n */\n isDescendantOf: function (target) {\n var parent = this.group || this.canvas;\n while (parent) {\n if (target === parent) {\n return true;\n } else if (parent instanceof fabric.StaticCanvas) {\n // happens after all parents were traversed through without a match\n return false;\n }\n parent = parent.group || parent.canvas;\n }\n return false;\n },\n\n /**\n *\n * @typedef {fabric.Object[] | [...fabric.Object[], fabric.StaticCanvas]} Ancestors\n *\n * @param {boolean} [strict] returns only ancestors that are objects (without canvas)\n * @returns {Ancestors} ancestors from bottom to top\n */\n getAncestors: function (strict) {\n var ancestors = [];\n var parent = this.group || (strict ? undefined : this.canvas);\n while (parent) {\n ancestors.push(parent);\n parent = parent.group || (strict ? undefined : parent.canvas);\n }\n return ancestors;\n },\n\n /**\n * Returns an object that represent the ancestry situation.\n *\n * @typedef {object} AncestryComparison\n * @property {Ancestors} common ancestors of `this` and `other` (may include `this` | `other`)\n * @property {Ancestors} fork ancestors that are of `this` only\n * @property {Ancestors} otherFork ancestors that are of `other` only\n *\n * @param {fabric.Object} other\n * @param {boolean} [strict] finds only ancestors that are objects (without canvas)\n * @returns {AncestryComparison | undefined}\n *\n */\n findCommonAncestors: function (other, strict) {\n if (this === other) {\n return {\n fork: [],\n otherFork: [],\n common: [this].concat(this.getAncestors(strict)),\n };\n } else if (!other) {\n // meh, warn and inform, and not my issue.\n // the argument is NOT optional, we can't end up here.\n return undefined;\n }\n var ancestors = this.getAncestors(strict);\n var otherAncestors = other.getAncestors(strict);\n // if `this` has no ancestors and `this` is top ancestor of `other` we must handle the following case\n if (\n ancestors.length === 0 &&\n otherAncestors.length > 0 &&\n this === otherAncestors[otherAncestors.length - 1]\n ) {\n return {\n fork: [],\n otherFork: [other].concat(\n otherAncestors.slice(0, otherAncestors.length - 1)\n ),\n common: [this],\n };\n }\n // compare ancestors\n for (var i = 0, ancestor; i < ancestors.length; i++) {\n ancestor = ancestors[i];\n if (ancestor === other) {\n return {\n fork: [this].concat(ancestors.slice(0, i)),\n otherFork: [],\n common: ancestors.slice(i),\n };\n }\n for (var j = 0; j < otherAncestors.length; j++) {\n if (this === otherAncestors[j]) {\n return {\n fork: [],\n otherFork: [other].concat(otherAncestors.slice(0, j)),\n common: [this].concat(ancestors),\n };\n }\n if (ancestor === otherAncestors[j]) {\n return {\n fork: [this].concat(ancestors.slice(0, i)),\n otherFork: [other].concat(otherAncestors.slice(0, j)),\n common: ancestors.slice(i),\n };\n }\n }\n }\n // nothing shared\n return {\n fork: [this].concat(ancestors),\n otherFork: [other].concat(otherAncestors),\n common: [],\n };\n },\n\n /**\n *\n * @param {fabric.Object} other\n * @param {boolean} [strict] checks only ancestors that are objects (without canvas)\n * @returns {boolean}\n */\n hasCommonAncestors: function (other, strict) {\n var commonAncestors = this.findCommonAncestors(other, strict);\n return commonAncestors && !!commonAncestors.ancestors.length;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Moves an object to the bottom of the stack of drawn objects\n * @return {fabric.Object} thisArg\n * @chainable\n */\n sendToBack: function () {\n if (this.group) {\n fabric.StaticCanvas.prototype.sendToBack.call(this.group, this);\n } else if (this.canvas) {\n this.canvas.sendToBack(this);\n }\n return this;\n },\n\n /**\n * Moves an object to the top of the stack of drawn objects\n * @return {fabric.Object} thisArg\n * @chainable\n */\n bringToFront: function () {\n if (this.group) {\n fabric.StaticCanvas.prototype.bringToFront.call(this.group, this);\n } else if (this.canvas) {\n this.canvas.bringToFront(this);\n }\n return this;\n },\n\n /**\n * Moves an object down in stack of drawn objects\n * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object\n * @return {fabric.Object} thisArg\n * @chainable\n */\n sendBackwards: function (intersecting) {\n if (this.group) {\n fabric.StaticCanvas.prototype.sendBackwards.call(\n this.group,\n this,\n intersecting\n );\n } else if (this.canvas) {\n this.canvas.sendBackwards(this, intersecting);\n }\n return this;\n },\n\n /**\n * Moves an object up in stack of drawn objects\n * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object\n * @return {fabric.Object} thisArg\n * @chainable\n */\n bringForward: function (intersecting) {\n if (this.group) {\n fabric.StaticCanvas.prototype.bringForward.call(\n this.group,\n this,\n intersecting\n );\n } else if (this.canvas) {\n this.canvas.bringForward(this, intersecting);\n }\n return this;\n },\n\n /**\n * Moves an object to specified level in stack of drawn objects\n * @param {Number} index New position of object\n * @return {fabric.Object} thisArg\n * @chainable\n */\n moveTo: function (index) {\n if (this.group && this.group.type !== 'activeSelection') {\n fabric.StaticCanvas.prototype.moveTo.call(this.group, this, index);\n } else if (this.canvas) {\n this.canvas.moveTo(this, index);\n }\n return this;\n },\n\n /**\n *\n * @param {fabric.Object} other object to compare against\n * @returns {boolean | undefined} if objects do not share a common ancestor or they are strictly equal it is impossible to determine which is in front of the other; in such cases the function returns `undefined`\n */\n isInFrontOf: function (other) {\n if (this === other) {\n return undefined;\n }\n var ancestorData = this.findCommonAncestors(other);\n if (!ancestorData) {\n return undefined;\n }\n if (ancestorData.fork.includes(other)) {\n return true;\n }\n if (ancestorData.otherFork.includes(this)) {\n return false;\n }\n var firstCommonAncestor = ancestorData.common[0];\n if (!firstCommonAncestor) {\n return undefined;\n }\n var headOfFork = ancestorData.fork.pop(),\n headOfOtherFork = ancestorData.otherFork.pop(),\n thisIndex = firstCommonAncestor._objects.indexOf(headOfFork),\n otherIndex = firstCommonAncestor._objects.indexOf(headOfOtherFork);\n return thisIndex > -1 && thisIndex > otherIndex;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Color } from '../color';\nimport { config } from '../config';\n\n/* _TO_SVG_START_ */\n(function (global) {\n var fabric = global.fabric;\n function getSvgColorString(prop, value) {\n if (!value) {\n return prop + ': none; ';\n } else if (value.toLive) {\n return prop + ': url(#SVGID_' + value.id + '); ';\n } else {\n var color = new Color(value),\n str = prop + ': ' + color.toRgb() + '; ',\n opacity = color.getAlpha();\n if (opacity !== 1) {\n //change the color in rgb + opacity\n str += prop + '-opacity: ' + opacity.toString() + '; ';\n }\n return str;\n }\n }\n\n var toFixed = (fabric = global.fabric),\n toFixed = fabric.util.toFixed;\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Returns styles-string for svg-export\n * @param {Boolean} skipShadow a boolean to skip shadow filter output\n * @return {String}\n */\n getSvgStyles: function (skipShadow) {\n var fillRule = this.fillRule ? this.fillRule : 'nonzero',\n strokeWidth = this.strokeWidth ? this.strokeWidth : '0',\n strokeDashArray = this.strokeDashArray\n ? this.strokeDashArray.join(' ')\n : 'none',\n strokeDashOffset = this.strokeDashOffset\n ? this.strokeDashOffset\n : '0',\n strokeLineCap = this.strokeLineCap ? this.strokeLineCap : 'butt',\n strokeLineJoin = this.strokeLineJoin ? this.strokeLineJoin : 'miter',\n strokeMiterLimit = this.strokeMiterLimit\n ? this.strokeMiterLimit\n : '4',\n opacity = typeof this.opacity !== 'undefined' ? this.opacity : '1',\n visibility = this.visible ? '' : ' visibility: hidden;',\n filter = skipShadow ? '' : this.getSvgFilter(),\n fill = getSvgColorString('fill', this.fill),\n stroke = getSvgColorString('stroke', this.stroke);\n\n return [\n stroke,\n 'stroke-width: ',\n strokeWidth,\n '; ',\n 'stroke-dasharray: ',\n strokeDashArray,\n '; ',\n 'stroke-linecap: ',\n strokeLineCap,\n '; ',\n 'stroke-dashoffset: ',\n strokeDashOffset,\n '; ',\n 'stroke-linejoin: ',\n strokeLineJoin,\n '; ',\n 'stroke-miterlimit: ',\n strokeMiterLimit,\n '; ',\n fill,\n 'fill-rule: ',\n fillRule,\n '; ',\n 'opacity: ',\n opacity,\n ';',\n filter,\n visibility,\n ].join('');\n },\n\n /**\n * Returns styles-string for svg-export\n * @param {Object} style the object from which to retrieve style properties\n * @param {Boolean} useWhiteSpace a boolean to include an additional attribute in the style.\n * @return {String}\n */\n getSvgSpanStyles: function (style, useWhiteSpace) {\n var term = '; ';\n var fontFamily = style.fontFamily\n ? 'font-family: ' +\n (style.fontFamily.indexOf(\"'\") === -1 &&\n style.fontFamily.indexOf('\"') === -1\n ? \"'\" + style.fontFamily + \"'\"\n : style.fontFamily) +\n term\n : '';\n var strokeWidth = style.strokeWidth\n ? 'stroke-width: ' + style.strokeWidth + term\n : '',\n fontFamily = fontFamily,\n fontSize = style.fontSize\n ? 'font-size: ' + style.fontSize + 'px' + term\n : '',\n fontStyle = style.fontStyle\n ? 'font-style: ' + style.fontStyle + term\n : '',\n fontWeight = style.fontWeight\n ? 'font-weight: ' + style.fontWeight + term\n : '',\n fill = style.fill ? getSvgColorString('fill', style.fill) : '',\n stroke = style.stroke\n ? getSvgColorString('stroke', style.stroke)\n : '',\n textDecoration = this.getSvgTextDecoration(style),\n deltaY = style.deltaY\n ? 'baseline-shift: ' + -style.deltaY + '; '\n : '';\n if (textDecoration) {\n textDecoration = 'text-decoration: ' + textDecoration + term;\n }\n\n return [\n stroke,\n strokeWidth,\n fontFamily,\n fontSize,\n fontStyle,\n fontWeight,\n textDecoration,\n fill,\n deltaY,\n useWhiteSpace ? 'white-space: pre; ' : '',\n ].join('');\n },\n\n /**\n * Returns text-decoration property for svg-export\n * @param {Object} style the object from which to retrieve style properties\n * @return {String}\n */\n getSvgTextDecoration: function (style) {\n return ['overline', 'underline', 'line-through']\n .filter(function (decoration) {\n return style[decoration.replace('-', '')];\n })\n .join(' ');\n },\n\n /**\n * Returns filter for svg shadow\n * @return {String}\n */\n getSvgFilter: function () {\n return this.shadow ? 'filter: url(#SVGID_' + this.shadow.id + ');' : '';\n },\n\n /**\n * Returns id attribute for svg output\n * @return {String}\n */\n getSvgCommons: function () {\n return [\n this.id ? 'id=\"' + this.id + '\" ' : '',\n this.clipPath\n ? 'clip-path=\"url(#' + this.clipPath.clipPathId + ')\" '\n : '',\n ].join('');\n },\n\n /**\n * Returns transform-string for svg-export\n * @param {Boolean} use the full transform or the single object one.\n * @return {String}\n */\n getSvgTransform: function (full, additionalTransform) {\n var transform = full\n ? this.calcTransformMatrix()\n : this.calcOwnMatrix(),\n svgTransform = 'transform=\"' + fabric.util.matrixToSVG(transform);\n return svgTransform + (additionalTransform || '') + '\" ';\n },\n\n _setSVGBg: function (textBgRects) {\n if (this.backgroundColor) {\n var NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n textBgRects.push(\n '\\t\\t\\n'\n );\n }\n },\n\n /**\n * Returns svg representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toSVG: function (reviver) {\n return this._createBaseSVGMarkup(this._toSVG(reviver), {\n reviver: reviver,\n });\n },\n\n /**\n * Returns svg clipPath representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toClipPathSVG: function (reviver) {\n return (\n '\\t' +\n this._createBaseClipPathSVGMarkup(this._toSVG(reviver), {\n reviver: reviver,\n })\n );\n },\n\n /**\n * @private\n */\n _createBaseClipPathSVGMarkup: function (objectMarkup, options) {\n options = options || {};\n var reviver = options.reviver,\n additionalTransform = options.additionalTransform || '',\n commonPieces = [\n this.getSvgTransform(true, additionalTransform),\n this.getSvgCommons(),\n ].join(''),\n // insert commons in the markup, style and svgCommons\n index = objectMarkup.indexOf('COMMON_PARTS');\n objectMarkup[index] = commonPieces;\n return reviver ? reviver(objectMarkup.join('')) : objectMarkup.join('');\n },\n\n /**\n * @private\n */\n _createBaseSVGMarkup: function (objectMarkup, options) {\n options = options || {};\n var noStyle = options.noStyle,\n reviver = options.reviver,\n styleInfo = noStyle ? '' : 'style=\"' + this.getSvgStyles() + '\" ',\n shadowInfo = options.withShadow\n ? 'style=\"' + this.getSvgFilter() + '\" '\n : '',\n clipPath = this.clipPath,\n vectorEffect = this.strokeUniform\n ? 'vector-effect=\"non-scaling-stroke\" '\n : '',\n absoluteClipPath = clipPath && clipPath.absolutePositioned,\n stroke = this.stroke,\n fill = this.fill,\n shadow = this.shadow,\n commonPieces,\n markup = [],\n clipPathMarkup,\n // insert commons in the markup, style and svgCommons\n index = objectMarkup.indexOf('COMMON_PARTS'),\n additionalTransform = options.additionalTransform;\n if (clipPath) {\n clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++;\n clipPathMarkup =\n '\\n' +\n clipPath.toClipPathSVG(reviver) +\n '\\n';\n }\n if (absoluteClipPath) {\n markup.push('\\n');\n }\n markup.push(\n '\\n'\n );\n commonPieces = [\n styleInfo,\n vectorEffect,\n noStyle ? '' : this.addPaintOrder(),\n ' ',\n additionalTransform ? 'transform=\"' + additionalTransform + '\" ' : '',\n ].join('');\n objectMarkup[index] = commonPieces;\n if (fill && fill.toLive) {\n markup.push(fill.toSVG(this));\n }\n if (stroke && stroke.toLive) {\n markup.push(stroke.toSVG(this));\n }\n if (shadow) {\n markup.push(shadow.toSVG(this));\n }\n if (clipPath) {\n markup.push(clipPathMarkup);\n }\n markup.push(objectMarkup.join(''));\n markup.push('\\n');\n absoluteClipPath && markup.push('\\n');\n return reviver ? reviver(markup.join('')) : markup.join('');\n },\n\n addPaintOrder: function () {\n return this.paintFirst !== 'fill'\n ? ' paint-order=\"' + this.paintFirst + '\" '\n : '';\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n/* _TO_SVG_END_ */\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n extend = fabric.util.object.extend,\n originalSet = 'stateProperties';\n\n /*\n Depends on `stateProperties`\n */\n function saveProps(origin, destination, props) {\n var tmpObj = {},\n deep = true;\n props.forEach(function (prop) {\n tmpObj[prop] = origin[prop];\n });\n\n extend(origin[destination], tmpObj, deep);\n }\n\n function _isEqual(origValue, currentValue, firstPass) {\n if (origValue === currentValue) {\n // if the objects are identical, return\n return true;\n } else if (Array.isArray(origValue)) {\n if (\n !Array.isArray(currentValue) ||\n origValue.length !== currentValue.length\n ) {\n return false;\n }\n for (var i = 0, len = origValue.length; i < len; i++) {\n if (!_isEqual(origValue[i], currentValue[i])) {\n return false;\n }\n }\n return true;\n } else if (origValue && typeof origValue === 'object') {\n var keys = Object.keys(origValue),\n key;\n if (\n !currentValue ||\n typeof currentValue !== 'object' ||\n (!firstPass && keys.length !== Object.keys(currentValue).length)\n ) {\n return false;\n }\n for (var i = 0, len = keys.length; i < len; i++) {\n key = keys[i];\n // since clipPath is in the statefull cache list and the clipPath objects\n // would be iterated as an object, this would lead to possible infinite recursion\n // we do not want to compare those.\n if (key === 'canvas' || key === 'group') {\n continue;\n }\n if (!_isEqual(origValue[key], currentValue[key])) {\n return false;\n }\n }\n return true;\n }\n }\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Returns true if object state (one of its state properties) was changed\n * @param {String} [propertySet] optional name for the set of property we want to save\n * @return {Boolean} true if instance' state has changed since `{@link fabric.Object#saveState}` was called\n */\n hasStateChanged: function (propertySet) {\n propertySet = propertySet || originalSet;\n var dashedPropertySet = '_' + propertySet;\n if (\n Object.keys(this[dashedPropertySet]).length < this[propertySet].length\n ) {\n return true;\n }\n return !_isEqual(this[dashedPropertySet], this, true);\n },\n\n /**\n * Saves state of an object\n * @param {Object} [options] Object with additional `stateProperties` array to include when saving state\n * @return {fabric.Object} thisArg\n */\n saveState: function (options) {\n var propertySet = (options && options.propertySet) || originalSet,\n destination = '_' + propertySet;\n if (!this[destination]) {\n return this.setupState(options);\n }\n saveProps(this, destination, this[propertySet]);\n if (options && options.stateProperties) {\n saveProps(this, destination, options.stateProperties);\n }\n return this;\n },\n\n /**\n * Setups state of an object\n * @param {Object} [options] Object with additional `stateProperties` array to include when saving state\n * @return {fabric.Object} thisArg\n */\n setupState: function (options) {\n options = options || {};\n var propertySet = options.propertySet || originalSet;\n options.propertySet = propertySet;\n this['_' + propertySet] = {};\n this.saveState(options);\n return this;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\n(function (global) {\n var fabric = global.fabric,\n degreesToRadians = fabric.util.degreesToRadians;\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Determines which corner has been clicked\n * @private\n * @param {Object} pointer The pointer indicating the mouse position\n * @return {String|Boolean} corner code (tl, tr, bl, br, etc.), or false if nothing is found\n */\n _findTargetCorner: function (pointer, forTouch) {\n if (\n !this.hasControls ||\n !this.canvas ||\n this.canvas._activeObject !== this\n ) {\n return false;\n }\n var xPoints,\n lines,\n keys = Object.keys(this.oCoords),\n j = keys.length - 1,\n i;\n this.__corner = 0;\n\n // cycle in reverse order so we pick first the one on top\n for (; j >= 0; j--) {\n i = keys[j];\n if (!this.isControlVisible(i)) {\n continue;\n }\n\n lines = this._getImageLines(\n forTouch ? this.oCoords[i].touchCorner : this.oCoords[i].corner\n );\n // // debugging\n //\n // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2);\n\n xPoints = this._findCrossPoints(pointer, lines);\n if (xPoints !== 0 && xPoints % 2 === 1) {\n this.__corner = i;\n return i;\n }\n }\n return false;\n },\n\n /**\n * Calls a function for each control. The function gets called,\n * with the control, the object that is calling the iterator and the control's key\n * @param {Function} fn function to iterate over the controls over\n */\n forEachControl: function (fn) {\n for (var i in this.controls) {\n fn(this.controls[i], i, this);\n }\n },\n\n /**\n * Sets the coordinates of the draggable boxes in the corners of\n * the image used to scale/rotate it.\n * note: if we would switch to ROUND corner area, all of this would disappear.\n * everything would resolve to a single point and a pythagorean theorem for the distance\n * @private\n */\n _setCornerCoords: function () {\n var coords = this.oCoords;\n\n for (var control in coords) {\n var controlObject = this.controls[control];\n coords[control].corner = controlObject.calcCornerCoords(\n this.angle,\n this.cornerSize,\n coords[control].x,\n coords[control].y,\n false\n );\n coords[control].touchCorner = controlObject.calcCornerCoords(\n this.angle,\n this.touchCornerSize,\n coords[control].x,\n coords[control].y,\n true\n );\n }\n },\n\n /**\n * Draws a colored layer behind the object, inside its selection borders.\n * Requires public options: padding, selectionBackgroundColor\n * this function is called when the context is transformed\n * has checks to be skipped when the object is on a staticCanvas\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @return {fabric.Object} thisArg\n * @chainable\n */\n drawSelectionBackground: function (ctx) {\n if (\n !this.selectionBackgroundColor ||\n (this.canvas && !this.canvas.interactive) ||\n (this.canvas && this.canvas._activeObject !== this)\n ) {\n return this;\n }\n ctx.save();\n var center = this.getRelativeCenterPoint(),\n wh = this._calculateCurrentDimensions(),\n vpt = this.canvas.viewportTransform;\n ctx.translate(center.x, center.y);\n ctx.scale(1 / vpt[0], 1 / vpt[3]);\n ctx.rotate(degreesToRadians(this.angle));\n ctx.fillStyle = this.selectionBackgroundColor;\n ctx.fillRect(-wh.x / 2, -wh.y / 2, wh.x, wh.y);\n ctx.restore();\n return this;\n },\n\n /**\n * @public override this function in order to customize the drawing of the control box, e.g. rounded corners, different border style.\n * @param {CanvasRenderingContext2D} ctx ctx is rotated and translated so that (0,0) is at object's center\n * @param {Point} size the control box size used\n */\n strokeBorders: function (ctx, size) {\n ctx.strokeRect(-size.x / 2, -size.y / 2, size.x, size.y);\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @param {Point} size\n * @param {Object} styleOverride object to override the object style\n */\n _drawBorders: function (ctx, size, styleOverride) {\n var options = Object.assign(\n {\n hasControls: this.hasControls,\n borderColor: this.borderColor,\n borderDashArray: this.borderDashArray,\n },\n styleOverride || {}\n );\n ctx.save();\n ctx.strokeStyle = options.borderColor;\n this._setLineDash(ctx, options.borderDashArray);\n this.strokeBorders(ctx, size);\n options.hasControls && this.drawControlsConnectingLines(ctx, size);\n ctx.restore();\n },\n\n /**\n * Draws borders of an object's bounding box.\n * Requires public properties: width, height\n * Requires public options: padding, borderColor\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @param {object} options object representing current object parameters\n * @param {Object} [styleOverride] object to override the object style\n * @return {fabric.Object} thisArg\n * @chainable\n */\n drawBorders: function (ctx, options, styleOverride) {\n var size;\n if ((styleOverride && styleOverride.forActiveSelection) || this.group) {\n const bbox = fabric.util.sizeAfterTransform(\n this.width,\n this.height,\n options\n ),\n stroke = (\n this.strokeUniform\n ? new Point().scalarAdd(this.canvas.getZoom())\n : new Point(options.scaleX, options.scaleY)\n ).scalarMultiply(this.strokeWidth);\n size = bbox.add(stroke).scalarAdd(this.borderScaleFactor);\n } else {\n size = this._calculateCurrentDimensions().scalarAdd(\n this.borderScaleFactor\n );\n }\n this._drawBorders(ctx, size, styleOverride);\n return this;\n },\n\n /**\n * Draws lines from a borders of an object's bounding box to controls that have `withConnection` property set.\n * Requires public properties: width, height\n * Requires public options: padding, borderColor\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @param {number} width object final width\n * @param {number} height object final height\n * @return {fabric.Object} thisArg\n * @chainable\n */\n drawControlsConnectingLines: function (ctx, size) {\n var shouldStroke = false;\n\n ctx.beginPath();\n this.forEachControl(function (control, key, fabricObject) {\n // in this moment, the ctx is centered on the object.\n // width and height of the above function are the size of the bbox.\n if (\n control.withConnection &&\n control.getVisibility(fabricObject, key)\n ) {\n // reset movement for each control\n shouldStroke = true;\n ctx.moveTo(control.x * size.x, control.y * size.y);\n ctx.lineTo(\n control.x * size.x + control.offsetX,\n control.y * size.y + control.offsetY\n );\n }\n });\n shouldStroke && ctx.stroke();\n\n return this;\n },\n\n /**\n * Draws corners of an object's bounding box.\n * Requires public properties: width, height\n * Requires public options: cornerSize, padding\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @param {Object} styleOverride object to override the object style\n * @return {fabric.Object} thisArg\n * @chainable\n */\n drawControls: function (ctx, styleOverride) {\n styleOverride = styleOverride || {};\n ctx.save();\n var retinaScaling = this.canvas.getRetinaScaling(),\n p;\n ctx.setTransform(retinaScaling, 0, 0, retinaScaling, 0, 0);\n ctx.strokeStyle = ctx.fillStyle =\n styleOverride.cornerColor || this.cornerColor;\n if (!this.transparentCorners) {\n ctx.strokeStyle =\n styleOverride.cornerStrokeColor || this.cornerStrokeColor;\n }\n this._setLineDash(\n ctx,\n styleOverride.cornerDashArray || this.cornerDashArray\n );\n this.setCoords();\n this.forEachControl(function (control, key, fabricObject) {\n if (control.getVisibility(fabricObject, key)) {\n p = fabricObject.oCoords[key];\n control.render(ctx, p.x, p.y, styleOverride, fabricObject);\n }\n });\n ctx.restore();\n\n return this;\n },\n\n /**\n * Returns true if the specified control is visible, false otherwise.\n * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'.\n * @returns {Boolean} true if the specified control is visible, false otherwise\n */\n isControlVisible: function (controlKey) {\n return (\n this.controls[controlKey] &&\n this.controls[controlKey].getVisibility(this, controlKey)\n );\n },\n\n /**\n * Sets the visibility of the specified control.\n * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'.\n * @param {Boolean} visible true to set the specified control visible, false otherwise\n * @return {fabric.Object} thisArg\n * @chainable\n */\n setControlVisible: function (controlKey, visible) {\n if (!this._controlsVisibility) {\n this._controlsVisibility = {};\n }\n this._controlsVisibility[controlKey] = visible;\n return this;\n },\n\n /**\n * Sets the visibility state of object controls.\n * @param {Object} [options] Options object\n * @param {Boolean} [options.bl] true to enable the bottom-left control, false to disable it\n * @param {Boolean} [options.br] true to enable the bottom-right control, false to disable it\n * @param {Boolean} [options.mb] true to enable the middle-bottom control, false to disable it\n * @param {Boolean} [options.ml] true to enable the middle-left control, false to disable it\n * @param {Boolean} [options.mr] true to enable the middle-right control, false to disable it\n * @param {Boolean} [options.mt] true to enable the middle-top control, false to disable it\n * @param {Boolean} [options.tl] true to enable the top-left control, false to disable it\n * @param {Boolean} [options.tr] true to enable the top-right control, false to disable it\n * @param {Boolean} [options.mtr] true to enable the middle-top-rotate control, false to disable it\n * @return {fabric.Object} thisArg\n * @chainable\n */\n setControlsVisibility: function (options) {\n options || (options = {});\n\n for (var p in options) {\n this.setControlVisible(p, options[p]);\n }\n return this;\n },\n\n /**\n * Clears the canvas.contextTop in a specific area that corresponds to the object's bounding box\n * that is in the canvas.contextContainer.\n * This function is used to clear pieces of contextTop where we render ephemeral effects on top of the object.\n * Example: blinking cursror text selection, drag effects.\n * // TODO: discuss swapping restoreManually with a renderCallback, but think of async issues\n * @param {Boolean} [restoreManually] When true won't restore the context after clear, in order to draw something else.\n * @return {CanvasRenderingContext2D|undefined} canvas.contextTop that is either still transformed\n * with the object transformMatrix, or restored to neutral transform\n */\n clearContextTop: function (restoreManually) {\n if (!this.canvas || !this.canvas.contextTop) {\n return;\n }\n var ctx = this.canvas.contextTop,\n v = this.canvas.viewportTransform;\n if (!ctx) {\n return;\n }\n ctx.save();\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n this.transform(ctx);\n // we add 4 pixel, to be sure to do not leave any pixel out\n var width = this.width + 4,\n height = this.height + 4;\n ctx.clearRect(-width / 2, -height / 2, width, height);\n\n restoreManually || ctx.restore();\n return ctx;\n },\n\n /**\n * This callback function is called every time _discardActiveObject or _setActiveObject\n * try to to deselect this object. If the function returns true, the process is cancelled\n * @param {Object} [options] options sent from the upper functions\n * @param {Event} [options.e] event if the process is generated by an event\n */\n onDeselect: function () {\n // implemented by sub-classes, as needed.\n },\n\n /**\n * This callback function is called every time _discardActiveObject or _setActiveObject\n * try to to select this object. If the function returns true, the process is cancelled\n * @param {Object} [options] options sent from the upper functions\n * @param {Event} [options.e] event if the process is generated by an event\n */\n onSelect: function () {\n // implemented by sub-classes, as needed.\n },\n\n /**\n * Override to customize drag and drop behavior\n * @public\n * @param {DragEvent} e\n * @returns {boolean}\n */\n canDrop: function (/* e */) {\n return false;\n },\n\n renderDragSourceEffect: function () {\n // for subclasses\n },\n\n renderDropTargetEffect: function (/* e */) {\n // for subclasses\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.StaticCanvas.prototype,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Animation duration (in ms) for fx* methods\n * @type Number\n * @default\n */\n FX_DURATION: 500,\n\n /**\n * Centers object horizontally with animation.\n * @param {fabric.Object} object Object to center\n * @param {Object} [callbacks] Callbacks object with optional \"onComplete\" and/or \"onChange\" properties\n * @param {Function} [callbacks.onComplete] Invoked on completion\n * @param {Function} [callbacks.onChange] Invoked on every step of animation\n * @return {fabric.AnimationContext} context\n */\n fxCenterObjectH: function (object, callbacks) {\n callbacks = callbacks || {};\n\n var empty = function () {},\n onComplete = callbacks.onComplete || empty,\n onChange = callbacks.onChange || empty,\n _this = this;\n\n return fabric.util.animate({\n target: this,\n startValue: object.getX(),\n endValue: this.getCenterPoint().x,\n duration: this.FX_DURATION,\n onChange: function (value) {\n object.setX(value);\n _this.requestRenderAll();\n onChange();\n },\n onComplete: function () {\n object.setCoords();\n onComplete();\n },\n });\n },\n\n /**\n * Centers object vertically with animation.\n * @param {fabric.Object} object Object to center\n * @param {Object} [callbacks] Callbacks object with optional \"onComplete\" and/or \"onChange\" properties\n * @param {Function} [callbacks.onComplete] Invoked on completion\n * @param {Function} [callbacks.onChange] Invoked on every step of animation\n * @return {fabric.AnimationContext} context\n */\n fxCenterObjectV: function (object, callbacks) {\n callbacks = callbacks || {};\n\n var empty = function () {},\n onComplete = callbacks.onComplete || empty,\n onChange = callbacks.onChange || empty,\n _this = this;\n\n return fabric.util.animate({\n target: this,\n startValue: object.getY(),\n endValue: this.getCenterPoint().y,\n duration: this.FX_DURATION,\n onChange: function (value) {\n object.setY(value);\n _this.requestRenderAll();\n onChange();\n },\n onComplete: function () {\n object.setCoords();\n onComplete();\n },\n });\n },\n\n /**\n * Same as `fabric.Canvas#remove` but animated\n * @param {fabric.Object} object Object to remove\n * @param {Object} [callbacks] Callbacks object with optional \"onComplete\" and/or \"onChange\" properties\n * @param {Function} [callbacks.onComplete] Invoked on completion\n * @param {Function} [callbacks.onChange] Invoked on every step of animation\n * @return {fabric.AnimationContext} context\n */\n fxRemove: function (object, callbacks) {\n callbacks = callbacks || {};\n\n var empty = function () {},\n onComplete = callbacks.onComplete || empty,\n onChange = callbacks.onChange || empty,\n _this = this;\n\n return fabric.util.animate({\n target: this,\n startValue: object.opacity,\n endValue: 0,\n duration: this.FX_DURATION,\n onChange: function (value) {\n object.set('opacity', value);\n _this.requestRenderAll();\n onChange();\n },\n onComplete: function () {\n _this.remove(object);\n onComplete();\n },\n });\n },\n }\n );\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Animates object's properties\n * @param {String|Object} property Property to animate (if string) or properties to animate (if object)\n * @param {Number|Object} value Value to animate property to (if string was given first) or options object\n * @return {fabric.Object} thisArg\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#animation}\n * @return {fabric.AnimationContext | fabric.AnimationContext[]} animation context (or an array if passed multiple properties)\n *\n * As object — multiple properties\n *\n * object.animate({ left: ..., top: ... });\n * object.animate({ left: ..., top: ... }, { duration: ... });\n *\n * As string — one property\n *\n * object.animate('left', ...);\n * object.animate('left', { duration: ... });\n *\n */\n animate: function () {\n if (arguments[0] && typeof arguments[0] === 'object') {\n var propsToAnimate = [],\n prop,\n skipCallbacks,\n out = [];\n for (prop in arguments[0]) {\n propsToAnimate.push(prop);\n }\n for (var i = 0, len = propsToAnimate.length; i < len; i++) {\n prop = propsToAnimate[i];\n skipCallbacks = i !== len - 1;\n out.push(\n this._animate(\n prop,\n arguments[0][prop],\n arguments[1],\n skipCallbacks\n )\n );\n }\n return out;\n } else {\n return this._animate.apply(this, arguments);\n }\n },\n\n /**\n * @private\n * @param {String} property Property to animate\n * @param {String} to Value to animate to\n * @param {Object} [options] Options object\n * @param {Boolean} [skipCallbacks] When true, callbacks like onchange and oncomplete are not invoked\n */\n _animate: function (property, to, options, skipCallbacks) {\n var _this = this,\n propPair;\n\n to = to.toString();\n\n options = Object.assign({}, options);\n\n if (~property.indexOf('.')) {\n propPair = property.split('.');\n }\n\n var propIsColor =\n _this.colorProperties.indexOf(property) > -1 ||\n (propPair && _this.colorProperties.indexOf(propPair[1]) > -1);\n\n var currentValue = propPair\n ? this.get(propPair[0])[propPair[1]]\n : this.get(property);\n\n if (!('from' in options)) {\n options.from = currentValue;\n }\n\n if (!propIsColor) {\n if (~to.indexOf('=')) {\n to = currentValue + parseFloat(to.replace('=', ''));\n } else {\n to = parseFloat(to);\n }\n }\n\n var _options = {\n target: this,\n startValue: options.from,\n endValue: to,\n byValue: options.by,\n easing: options.easing,\n duration: options.duration,\n abort:\n options.abort &&\n function (value, valueProgress, timeProgress) {\n return options.abort.call(\n _this,\n value,\n valueProgress,\n timeProgress\n );\n },\n onChange: function (value, valueProgress, timeProgress) {\n if (propPair) {\n _this[propPair[0]][propPair[1]] = value;\n } else {\n _this.set(property, value);\n }\n if (skipCallbacks) {\n return;\n }\n options.onChange &&\n options.onChange(value, valueProgress, timeProgress);\n },\n onComplete: function (value, valueProgress, timeProgress) {\n if (skipCallbacks) {\n return;\n }\n\n _this.setCoords();\n options.onComplete &&\n options.onComplete(value, valueProgress, timeProgress);\n },\n };\n\n if (propIsColor) {\n return fabric.util.animateColor(\n _options.startValue,\n _options.endValue,\n _options.duration,\n _options\n );\n } else {\n return fabric.util.animate(_options);\n }\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n clone = fabric.util.object.clone,\n coordProps = { x1: 1, x2: 1, y1: 1, y2: 1 };\n\n /**\n * Line class\n * @class fabric.Line\n * @extends fabric.Object\n * @see {@link fabric.Line#initialize} for constructor definition\n */\n fabric.Line = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Line.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'line',\n\n /**\n * x value or first line edge\n * @type Number\n * @default\n */\n x1: 0,\n\n /**\n * y value or first line edge\n * @type Number\n * @default\n */\n y1: 0,\n\n /**\n * x value or second line edge\n * @type Number\n * @default\n */\n x2: 0,\n\n /**\n * y value or second line edge\n * @type Number\n * @default\n */\n y2: 0,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'x1',\n 'x2',\n 'y1',\n 'y2'\n ),\n\n /**\n * Constructor\n * @param {Array} [points] Array of points\n * @param {Object} [options] Options object\n * @return {fabric.Line} thisArg\n */\n initialize: function (points, options) {\n if (!points) {\n points = [0, 0, 0, 0];\n }\n\n this.callSuper('initialize', options);\n\n this.set('x1', points[0]);\n this.set('y1', points[1]);\n this.set('x2', points[2]);\n this.set('y2', points[3]);\n\n this._setWidthHeight(options);\n },\n\n /**\n * @private\n * @param {Object} [options] Options\n */\n _setWidthHeight: function (options) {\n options || (options = {});\n\n this.width = Math.abs(this.x2 - this.x1);\n this.height = Math.abs(this.y2 - this.y1);\n\n this.left = 'left' in options ? options.left : this._getLeftToOriginX();\n\n this.top = 'top' in options ? options.top : this._getTopToOriginY();\n },\n\n /**\n * @private\n * @param {String} key\n * @param {*} value\n */\n _set: function (key, value) {\n this.callSuper('_set', key, value);\n if (typeof coordProps[key] !== 'undefined') {\n this._setWidthHeight();\n }\n return this;\n },\n\n /**\n * @private\n * @return {Number} leftToOriginX Distance from left edge of canvas to originX of Line.\n */\n _getLeftToOriginX: makeEdgeToOriginGetter(\n {\n // property names\n origin: 'originX',\n axis1: 'x1',\n axis2: 'x2',\n dimension: 'width',\n },\n {\n // possible values of origin\n nearest: 'left',\n center: 'center',\n farthest: 'right',\n }\n ),\n\n /**\n * @private\n * @return {Number} topToOriginY Distance from top edge of canvas to originY of Line.\n */\n _getTopToOriginY: makeEdgeToOriginGetter(\n {\n // property names\n origin: 'originY',\n axis1: 'y1',\n axis2: 'y2',\n dimension: 'height',\n },\n {\n // possible values of origin\n nearest: 'top',\n center: 'center',\n farthest: 'bottom',\n }\n ),\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n ctx.beginPath();\n\n var p = this.calcLinePoints();\n ctx.moveTo(p.x1, p.y1);\n ctx.lineTo(p.x2, p.y2);\n\n ctx.lineWidth = this.strokeWidth;\n\n // TODO: test this\n // make sure setting \"fill\" changes color of a line\n // (by copying fillStyle to strokeStyle, since line is stroked, not filled)\n var origStrokeStyle = ctx.strokeStyle;\n ctx.strokeStyle = this.stroke || ctx.fillStyle;\n this.stroke && this._renderStroke(ctx);\n ctx.strokeStyle = origStrokeStyle;\n },\n\n /**\n * This function is an helper for svg import. it returns the center of the object in the svg\n * untransformed coordinates\n * @private\n * @return {Object} center point from element coordinates\n */\n _findCenterFromElement: function () {\n return {\n x: (this.x1 + this.x2) / 2,\n y: (this.y1 + this.y2) / 2,\n };\n },\n\n /**\n * Returns object representation of an instance\n * @method toObject\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return extend(\n this.callSuper('toObject', propertiesToInclude),\n this.calcLinePoints()\n );\n },\n\n /*\n * Calculate object dimensions from its properties\n * @private\n */\n _getNonTransformedDimensions: function () {\n var dim = this.callSuper('_getNonTransformedDimensions');\n if (this.strokeLineCap === 'butt') {\n if (this.width === 0) {\n dim.y -= this.strokeWidth;\n }\n if (this.height === 0) {\n dim.x -= this.strokeWidth;\n }\n }\n return dim;\n },\n\n /**\n * Recalculates line points given width and height\n * @private\n */\n calcLinePoints: function () {\n var xMult = this.x1 <= this.x2 ? -1 : 1,\n yMult = this.y1 <= this.y2 ? -1 : 1,\n x1 = xMult * this.width * 0.5,\n y1 = yMult * this.height * 0.5,\n x2 = xMult * this.width * -0.5,\n y2 = yMult * this.height * -0.5;\n\n return {\n x1: x1,\n x2: x2,\n y1: y1,\n y2: y2,\n };\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var p = this.calcLinePoints();\n return [\n '\\n',\n ];\n },\n /* _TO_SVG_END_ */\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Line.fromElement})\n * @static\n * @memberOf fabric.Line\n * @see http://www.w3.org/TR/SVG/shapes.html#LineElement\n */\n fabric.Line.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'x1 y1 x2 y2'.split(' ')\n );\n\n /**\n * Returns fabric.Line instance from an SVG element\n * @static\n * @memberOf fabric.Line\n * @param {SVGElement} element Element to parse\n * @param {Object} [options] Options object\n * @param {Function} [callback] callback function invoked after parsing\n */\n fabric.Line.fromElement = function (element, callback, options) {\n options = options || {};\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Line.ATTRIBUTE_NAMES\n ),\n points = [\n parsedAttributes.x1 || 0,\n parsedAttributes.y1 || 0,\n parsedAttributes.x2 || 0,\n parsedAttributes.y2 || 0,\n ];\n callback(new fabric.Line(points, extend(parsedAttributes, options)));\n };\n /* _FROM_SVG_END_ */\n\n /**\n * Returns fabric.Line instance from an object representation\n * @static\n * @memberOf fabric.Line\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Line.fromObject = function (object) {\n var options = clone(object, true);\n options.points = [object.x1, object.y1, object.x2, object.y2];\n return fabric.Object._fromObject(fabric.Line, options, {\n extraParam: 'points',\n }).then(function (fabricLine) {\n delete fabricLine.points;\n return fabricLine;\n });\n };\n\n /**\n * Produces a function that calculates distance from canvas edge to Line origin.\n */\n function makeEdgeToOriginGetter(propertyNames, originValues) {\n var origin = propertyNames.origin,\n axis1 = propertyNames.axis1,\n axis2 = propertyNames.axis2,\n dimension = propertyNames.dimension,\n nearest = originValues.nearest,\n center = originValues.center,\n farthest = originValues.farthest;\n\n return function () {\n switch (this.get(origin)) {\n case nearest:\n return Math.min(this.get(axis1), this.get(axis2));\n case center:\n return (\n Math.min(this.get(axis1), this.get(axis2)) +\n 0.5 * this.get(dimension)\n );\n case farthest:\n return Math.max(this.get(axis1), this.get(axis2));\n }\n };\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\n\nconst degreesToRadians = fabric.util.degreesToRadians;\n\n/**\n * Circle class\n * @class Circle\n * @extends fabric.Object\n * @see {@link Circle#initialize} for constructor definition\n */\nconst Circle = fabric.util.createClass(\n fabric.Object,\n /** @lends Circle.prototype */ {\n /**\n * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged})\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties: fabric.Object.prototype.stateProperties.concat(\n 'radius',\n 'startAngle',\n 'endAngle'\n ),\n\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'circle',\n\n /**\n * Radius of this circle\n * @type Number\n * @default\n */\n radius: 0,\n\n /**\n * degrees of start of the circle.\n * probably will change to degrees in next major version\n * @type Number 0 - 359\n * @default 0\n */\n startAngle: 0,\n\n /**\n * End angle of the circle\n * probably will change to degrees in next major version\n * @type Number 1 - 360\n * @default 360\n */\n endAngle: 360,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'radius',\n 'startAngle',\n 'endAngle'\n ),\n\n /**\n * @private\n * @param {String} key\n * @param {*} value\n * @return {Circle} thisArg\n */\n _set: function (key, value) {\n this.callSuper('_set', key, value);\n\n if (key === 'radius') {\n this.setRadius(value);\n }\n\n return this;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx context to render on\n */\n _render: function (ctx) {\n ctx.beginPath();\n ctx.arc(\n 0,\n 0,\n this.radius,\n degreesToRadians(this.startAngle),\n degreesToRadians(this.endAngle),\n false\n );\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Returns horizontal radius of an object (according to how an object is scaled)\n * @return {Number}\n */\n getRadiusX: function () {\n return this.get('radius') * this.get('scaleX');\n },\n\n /**\n * Returns vertical radius of an object (according to how an object is scaled)\n * @return {Number}\n */\n getRadiusY: function () {\n return this.get('radius') * this.get('scaleY');\n },\n\n /**\n * Sets radius of an object (and updates width accordingly)\n * @return {Circle} thisArg\n */\n setRadius: function (value) {\n this.radius = value;\n return this.set('width', value * 2).set('height', value * 2);\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this.callSuper(\n 'toObject',\n ['radius', 'startAngle', 'endAngle'].concat(propertiesToInclude)\n );\n },\n\n /* _TO_SVG_START_ */\n\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n const angle = (this.endAngle - this.startAngle) % 360;\n\n if (angle === 0) {\n return [\n '\\n',\n ];\n } else {\n const { radius } = this;\n const start = degreesToRadians(this.startAngle),\n end = degreesToRadians(this.endAngle),\n startX = fabric.util.cos(start) * radius,\n startY = fabric.util.sin(start) * radius,\n endX = fabric.util.cos(end) * radius,\n endY = fabric.util.sin(end) * radius,\n largeFlag = angle > 180 ? '1' : '0';\n return [\n '\\n',\n ];\n }\n },\n /* _TO_SVG_END_ */\n }\n);\n\n/* _FROM_SVG_START_ */\n/**\n * List of attribute names to account for when parsing SVG element (used by {@link Circle.fromElement})\n * @static\n * @memberOf Circle\n * @see: http://www.w3.org/TR/SVG/shapes.html#CircleElement\n */\nCircle.ATTRIBUTE_NAMES = ['cx', 'cy', 'r', ...fabric.SHARED_ATTRIBUTES];\n\n/**\n * Returns {@link Circle} instance from an SVG element\n * @static\n * @memberOf Circle\n * @param {SVGElement} element Element to parse\n * @param {Function} [callback] Options callback invoked after parsing is finished\n * @param {Object} [options] Partial Circle object to default missing properties on the element.\n * @throws {Error} If value of `r` attribute is missing or invalid\n */\nCircle.fromElement = function (element, callback) {\n const {\n left = 0,\n top = 0,\n radius,\n ...otherParsedAttributes\n } = fabric.parseAttributes(element, Circle.ATTRIBUTE_NAMES);\n\n if (!radius || radius < 0) {\n throw new Error(\n 'value of `r` attribute is required and can not be negative'\n );\n }\n\n // this probably requires to be fixed for default origins not being top/left.\n callback(\n new fabric.Circle({\n ...otherParsedAttributes,\n radius,\n left: left - radius,\n top: top - radius,\n })\n );\n};\n\n/* _FROM_SVG_END_ */\n\n/**\n * Returns {@link Circle} instance from an object representation\n * @static\n * @memberOf Circle\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\nCircle.fromObject = (object) =>\n fabric.Object._fromObject(fabric.Circle, object);\n\nfabric.Circle = Circle;\nexport { Circle };\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n /**\n * Triangle class\n * @class fabric.Triangle\n * @extends fabric.Object\n * @return {fabric.Triangle} thisArg\n * @see {@link fabric.Triangle#initialize} for constructor definition\n */\n fabric.Triangle = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Triangle.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'triangle',\n\n /**\n * Width is set to 100 to compensate the old initialize code that was setting it to 100\n * @type Number\n * @default\n */\n width: 100,\n\n /**\n * Height is set to 100 to compensate the old initialize code that was setting it to 100\n * @type Number\n * @default\n */\n height: 100,\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n var widthBy2 = this.width / 2,\n heightBy2 = this.height / 2;\n\n ctx.beginPath();\n ctx.moveTo(-widthBy2, heightBy2);\n ctx.lineTo(0, -heightBy2);\n ctx.lineTo(widthBy2, heightBy2);\n ctx.closePath();\n\n this._renderPaintInOrder(ctx);\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var widthBy2 = this.width / 2,\n heightBy2 = this.height / 2,\n points = [\n -widthBy2 + ' ' + heightBy2,\n '0 ' + -heightBy2,\n widthBy2 + ' ' + heightBy2,\n ].join(',');\n return [''];\n },\n /* _TO_SVG_END_ */\n }\n );\n\n /**\n * Returns {@link fabric.Triangle} instance from an object representation\n * @static\n * @memberOf fabric.Triangle\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Triangle.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Triangle, object);\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n piBy2 = Math.PI * 2;\n /**\n * Ellipse class\n * @class fabric.Ellipse\n * @extends fabric.Object\n * @return {fabric.Ellipse} thisArg\n * @see {@link fabric.Ellipse#initialize} for constructor definition\n */\n fabric.Ellipse = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Ellipse.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'ellipse',\n\n /**\n * Horizontal radius\n * @type Number\n * @default\n */\n rx: 0,\n\n /**\n * Vertical radius\n * @type Number\n * @default\n */\n ry: 0,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'rx',\n 'ry'\n ),\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n * @return {fabric.Ellipse} thisArg\n */\n initialize: function (options) {\n this.callSuper('initialize', options);\n this.set('rx', (options && options.rx) || 0);\n this.set('ry', (options && options.ry) || 0);\n },\n\n /**\n * @private\n * @param {String} key\n * @param {*} value\n * @return {fabric.Ellipse} thisArg\n */\n _set: function (key, value) {\n this.callSuper('_set', key, value);\n switch (key) {\n case 'rx':\n this.rx = value;\n this.set('width', value * 2);\n break;\n\n case 'ry':\n this.ry = value;\n this.set('height', value * 2);\n break;\n }\n return this;\n },\n\n /**\n * Returns horizontal radius of an object (according to how an object is scaled)\n * @return {Number}\n */\n getRx: function () {\n return this.get('rx') * this.get('scaleX');\n },\n\n /**\n * Returns Vertical radius of an object (according to how an object is scaled)\n * @return {Number}\n */\n getRy: function () {\n return this.get('ry') * this.get('scaleY');\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this.callSuper(\n 'toObject',\n ['rx', 'ry'].concat(propertiesToInclude)\n );\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n return [\n '\\n',\n ];\n },\n /* _TO_SVG_END_ */\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx context to render on\n */\n _render: function (ctx) {\n ctx.beginPath();\n ctx.save();\n ctx.transform(1, 0, 0, this.ry / this.rx, 0, 0);\n ctx.arc(0, 0, this.rx, 0, piBy2, false);\n ctx.restore();\n this._renderPaintInOrder(ctx);\n },\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Ellipse.fromElement})\n * @static\n * @memberOf fabric.Ellipse\n * @see http://www.w3.org/TR/SVG/shapes.html#EllipseElement\n */\n fabric.Ellipse.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'cx cy rx ry'.split(' ')\n );\n\n /**\n * Returns {@link fabric.Ellipse} instance from an SVG element\n * @static\n * @memberOf fabric.Ellipse\n * @param {SVGElement} element Element to parse\n * @param {Function} [callback] Options callback invoked after parsing is finished\n * @return {fabric.Ellipse}\n */\n fabric.Ellipse.fromElement = function (element, callback) {\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Ellipse.ATTRIBUTE_NAMES\n );\n\n parsedAttributes.left = (parsedAttributes.left || 0) - parsedAttributes.rx;\n parsedAttributes.top = (parsedAttributes.top || 0) - parsedAttributes.ry;\n callback(new fabric.Ellipse(parsedAttributes));\n };\n /* _FROM_SVG_END_ */\n\n /**\n * Returns {@link fabric.Ellipse} instance from an object representation\n * @static\n * @memberOf fabric.Ellipse\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Ellipse.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Ellipse, object);\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { kRect } from '../constants';\n/**\n * Rectangle class\n * @class Rect\n * @extends fabric.Object\n * @return {Rect} thisArg\n * @see {@link Rect#initialize} for constructor definition\n */\nconst Rect = fabric.util.createClass(\n fabric.Object,\n /** @lends Rect.prototype */ {\n /**\n * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged})\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties: fabric.Object.prototype.stateProperties.concat('rx', 'ry'),\n\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'rect',\n\n /**\n * Horizontal border radius\n * @type Number\n * @default\n */\n rx: 0,\n\n /**\n * Vertical border radius\n * @type Number\n * @default\n */\n ry: 0,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat('rx', 'ry'),\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n * @return {Object} thisArg\n */\n initialize: function (options) {\n this.callSuper('initialize', options);\n this._initRxRy();\n },\n\n /**\n * Initializes rx/ry attributes\n * @private\n */\n _initRxRy: function () {\n const { rx, ry } = this;\n if (rx && !ry) {\n this.ry = rx;\n } else if (ry && !rx) {\n this.rx = ry;\n }\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n // 1x1 case (used in spray brush) optimization was removed because\n // with caching and higher zoom level this makes more damage than help\n const { width: w, height: h } = this;\n const x = -w / 2;\n const y = -h / 2;\n const rx = this.rx ? Math.min(this.rx, w / 2) : 0;\n const ry = this.ry ? Math.min(this.ry, h / 2) : 0;\n const isRounded = rx !== 0 || ry !== 0;\n\n ctx.beginPath();\n\n ctx.moveTo(x + rx, y);\n\n ctx.lineTo(x + w - rx, y);\n isRounded &&\n ctx.bezierCurveTo(\n x + w - kRect * rx,\n y,\n x + w,\n y + kRect * ry,\n x + w,\n y + ry\n );\n\n ctx.lineTo(x + w, y + h - ry);\n isRounded &&\n ctx.bezierCurveTo(\n x + w,\n y + h - kRect * ry,\n x + w - kRect * rx,\n y + h,\n x + w - rx,\n y + h\n );\n\n ctx.lineTo(x + rx, y + h);\n isRounded &&\n ctx.bezierCurveTo(\n x + kRect * rx,\n y + h,\n x,\n y + h - kRect * ry,\n x,\n y + h - ry\n );\n\n ctx.lineTo(x, y + ry);\n isRounded &&\n ctx.bezierCurveTo(x, y + kRect * ry, x + kRect * rx, y, x + rx, y);\n\n ctx.closePath();\n\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this.callSuper(\n 'toObject',\n ['rx', 'ry'].concat(propertiesToInclude)\n );\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n const { width, height, rx, ry } = this;\n return [\n '\\n',\n ];\n },\n /* _TO_SVG_END_ */\n }\n);\n\n/* _FROM_SVG_START_ */\n/**\n * List of attribute names to account for when parsing SVG element (used by `Rect.fromElement`)\n * @static\n * @memberOf Rect\n * @see: http://www.w3.org/TR/SVG/shapes.html#RectElement\n */\nRect.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'x y rx ry width height'.split(' ')\n);\n\n/**\n * Returns {@link Rect} instance from an SVG element\n * @static\n * @memberOf Rect\n * @param {SVGElement} element Element to parse\n * @param {Function} callback callback function invoked after parsing\n * @param {Object} [options] Options object\n */\nRect.fromElement = function (element, callback, options = {}) {\n if (!element) {\n return callback(null);\n }\n const {\n left = 0,\n top = 0,\n width = 0,\n height = 0,\n visible = true,\n ...restOfparsedAttributes\n } = fabric.parseAttributes(element, Rect.ATTRIBUTE_NAMES);\n\n const rect = new Rect({\n ...options,\n ...restOfparsedAttributes,\n left,\n top,\n width,\n height,\n visible: Boolean(visible && width && height),\n });\n callback(rect);\n};\n/* _FROM_SVG_END_ */\n\n/**\n * Returns {@link Rect} instance from an object representation\n * @static\n * @memberOf Rect\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\nRect.fromObject = (object) => fabric.Object._fromObject(Rect, object);\n\nfabric.Rect = Rect;\nexport { Rect };\n","//@ts-nocheck\n\nimport { config } from '../config';\nimport { Point } from '../point.class';\nimport { makeBoundingBoxFromPoints } from '../util/misc/boundingBoxFromPoints';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n toFixed = fabric.util.toFixed,\n projectStrokeOnPoints = fabric.util.projectStrokeOnPoints;\n\n /**\n * Polyline class\n * @class fabric.Polyline\n * @extends fabric.Object\n * @see {@link fabric.Polyline#initialize} for constructor definition\n */\n fabric.Polyline = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Polyline.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'polyline',\n\n /**\n * Points array\n * @type Array\n * @default\n */\n points: null,\n\n /**\n * WARNING: Feature in progress\n * Calculate the exact bounding box taking in account strokeWidth on acute angles\n * this will be turned to true by default on fabric 6.0\n * maybe will be left in as an optimization since calculations may be slow\n * @deprecated\n * @type Boolean\n * @default false\n */\n exactBoundingBox: false,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat('points'),\n\n /**\n * Constructor\n * @param {Array} points Array of points (where each point is an object with x and y)\n * @param {Object} [options] Options object\n * @return {fabric.Polyline} thisArg\n * @example\n * var poly = new fabric.Polyline([\n * { x: 10, y: 10 },\n * { x: 50, y: 30 },\n * { x: 40, y: 70 },\n * { x: 60, y: 50 },\n * { x: 100, y: 150 },\n * { x: 40, y: 100 }\n * ], {\n * stroke: 'red',\n * left: 100,\n * top: 100\n * });\n */\n initialize: function (points, options) {\n options = options || {};\n this.points = points || [];\n this.callSuper('initialize', options);\n this._setPositionDimensions(options);\n },\n\n /**\n * @private\n */\n _projectStrokeOnPoints: function () {\n return projectStrokeOnPoints(this.points, this, true);\n },\n\n _setPositionDimensions: function (options) {\n options || (options = {});\n var calcDim = this._calcDimensions(options),\n correctLeftTop,\n correctSize = this.exactBoundingBox ? this.strokeWidth : 0;\n this.width = calcDim.width - correctSize;\n this.height = calcDim.height - correctSize;\n if (!options.fromSVG) {\n correctLeftTop = this.translateToGivenOrigin(\n {\n // this looks bad, but is one way to keep it optional for now.\n x: calcDim.left - this.strokeWidth / 2 + correctSize / 2,\n y: calcDim.top - this.strokeWidth / 2 + correctSize / 2,\n },\n 'left',\n 'top',\n this.originX,\n this.originY\n );\n }\n if (typeof options.left === 'undefined') {\n this.left = options.fromSVG ? calcDim.left : correctLeftTop.x;\n }\n if (typeof options.top === 'undefined') {\n this.top = options.fromSVG ? calcDim.top : correctLeftTop.y;\n }\n this.pathOffset = {\n x: calcDim.left + this.width / 2 + correctSize / 2,\n y: calcDim.top + this.height / 2 + correctSize / 2,\n };\n },\n\n /**\n * Calculate the polygon min and max point from points array,\n * returning an object with left, top, width, height to measure the\n * polygon size\n * @return {Object} object.left X coordinate of the polygon leftmost point\n * @return {Object} object.top Y coordinate of the polygon topmost point\n * @return {Object} object.width distance between X coordinates of the polygon leftmost and rightmost point\n * @return {Object} object.height distance between Y coordinates of the polygon topmost and bottommost point\n * @private\n */\n _calcDimensions: function () {\n const points = this.exactBoundingBox\n ? this._projectStrokeOnPoints()\n : this.points.map((p) => new Point(p));\n if (points.length === 0) {\n return makeBoundingBoxFromPoints([new Point(0, 0)]);\n }\n return makeBoundingBoxFromPoints(points);\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return extend(this.callSuper('toObject', propertiesToInclude), {\n points: this.points.concat(),\n });\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var points = [],\n diffX = this.pathOffset.x,\n diffY = this.pathOffset.y,\n NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n\n for (var i = 0, len = this.points.length; i < len; i++) {\n points.push(\n toFixed(this.points[i].x - diffX, NUM_FRACTION_DIGITS),\n ',',\n toFixed(this.points[i].y - diffY, NUM_FRACTION_DIGITS),\n ' '\n );\n }\n return [\n '<' + this.type + ' ',\n 'COMMON_PARTS',\n 'points=\"',\n points.join(''),\n '\" />\\n',\n ];\n },\n /* _TO_SVG_END_ */\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n commonRender: function (ctx) {\n var point,\n len = this.points.length,\n x = this.pathOffset.x,\n y = this.pathOffset.y;\n\n if (!len || isNaN(this.points[len - 1].y)) {\n // do not draw if no points or odd points\n // NaN comes from parseFloat of a empty string in parser\n return false;\n }\n ctx.beginPath();\n ctx.moveTo(this.points[0].x - x, this.points[0].y - y);\n for (var i = 0; i < len; i++) {\n point = this.points[i];\n ctx.lineTo(point.x - x, point.y - y);\n }\n return true;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n if (!this.commonRender(ctx)) {\n return;\n }\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Returns complexity of an instance\n * @return {Number} complexity of this instance\n */\n complexity: function () {\n return this.get('points').length;\n },\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Polyline.fromElement})\n * @static\n * @memberOf fabric.Polyline\n * @see: http://www.w3.org/TR/SVG/shapes.html#PolylineElement\n */\n fabric.Polyline.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat();\n\n /**\n * Returns fabric.Polyline instance from an SVG element\n * @static\n * @memberOf fabric.Polyline\n * @param {SVGElement} element Element to parser\n * @param {Function} callback callback function invoked after parsing\n * @param {Object} [options] Options object\n */\n fabric.Polyline.fromElementGenerator = function (_class) {\n return function (element, callback, options) {\n if (!element) {\n return callback(null);\n }\n options || (options = {});\n\n var points = fabric.parsePointsAttribute(element.getAttribute('points')),\n parsedAttributes = fabric.parseAttributes(\n element,\n fabric[_class].ATTRIBUTE_NAMES\n );\n parsedAttributes.fromSVG = true;\n callback(new fabric[_class](points, extend(parsedAttributes, options)));\n };\n };\n\n fabric.Polyline.fromElement =\n fabric.Polyline.fromElementGenerator('Polyline');\n\n /* _FROM_SVG_END_ */\n\n /**\n * Returns fabric.Polyline instance from an object representation\n * @static\n * @memberOf fabric.Polyline\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Polyline.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Polyline, object, {\n extraParam: 'points',\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n projectStrokeOnPoints = fabric.util.projectStrokeOnPoints;\n /**\n * Polygon class\n * @class fabric.Polygon\n * @extends fabric.Polyline\n * @see {@link fabric.Polygon#initialize} for constructor definition\n */\n fabric.Polygon = fabric.util.createClass(\n fabric.Polyline,\n /** @lends fabric.Polygon.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'polygon',\n\n /**\n * @private\n */\n _projectStrokeOnPoints: function () {\n return projectStrokeOnPoints(this.points, this);\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n if (!this.commonRender(ctx)) {\n return;\n }\n ctx.closePath();\n this._renderPaintInOrder(ctx);\n },\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by `fabric.Polygon.fromElement`)\n * @static\n * @memberOf fabric.Polygon\n * @see: http://www.w3.org/TR/SVG/shapes.html#PolygonElement\n */\n fabric.Polygon.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat();\n\n /**\n * Returns {@link fabric.Polygon} instance from an SVG element\n * @static\n * @memberOf fabric.Polygon\n * @param {SVGElement} element Element to parse\n * @param {Function} callback callback function invoked after parsing\n * @param {Object} [options] Options object\n */\n fabric.Polygon.fromElement = fabric.Polyline.fromElementGenerator('Polygon');\n /* _FROM_SVG_END_ */\n\n /**\n * Returns fabric.Polygon instance from an object representation\n * @static\n * @memberOf fabric.Polygon\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Polygon.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Polygon, object, {\n extraParam: 'points',\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { config } from '../config';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n clone = fabric.util.object.clone,\n toFixed = fabric.util.toFixed;\n\n /**\n * Path class\n * @class fabric.Path\n * @extends fabric.Object\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#path_and_pathgroup}\n * @see {@link fabric.Path#initialize} for constructor definition\n */\n fabric.Path = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Path.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'path',\n\n /**\n * Array of path points\n * @type Array\n * @default\n */\n path: null,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'path',\n 'fillRule'\n ),\n\n stateProperties: fabric.Object.prototype.stateProperties.concat('path'),\n\n /**\n * Constructor\n * @param {Array|String} path Path data (sequence of coordinates and corresponding \"command\" tokens)\n * @param {Object} [options] Options object\n * @return {fabric.Path} thisArg\n */\n initialize: function (path, options) {\n options = clone(options || {});\n delete options.path;\n this.callSuper('initialize', options);\n this._setPath(path || [], options);\n },\n\n /**\n * @private\n * @param {Array|String} path Path data (sequence of coordinates and corresponding \"command\" tokens)\n * @param {Object} [options] Options object\n */\n _setPath: function (path, options) {\n this.path = fabric.util.makePathSimpler(\n Array.isArray(path) ? path : fabric.util.parsePath(path)\n );\n\n fabric.Polyline.prototype._setPositionDimensions.call(\n this,\n options || {}\n );\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx context to render path on\n */\n _renderPathCommands: function (ctx) {\n var current, // current instruction\n subpathStartX = 0,\n subpathStartY = 0,\n x = 0, // current x\n y = 0, // current y\n controlX = 0, // current control point x\n controlY = 0, // current control point y\n l = -this.pathOffset.x,\n t = -this.pathOffset.y;\n\n ctx.beginPath();\n\n for (var i = 0, len = this.path.length; i < len; ++i) {\n current = this.path[i];\n\n switch (\n current[0] // first letter\n ) {\n case 'L': // lineto, absolute\n x = current[1];\n y = current[2];\n ctx.lineTo(x + l, y + t);\n break;\n\n case 'M': // moveTo, absolute\n x = current[1];\n y = current[2];\n subpathStartX = x;\n subpathStartY = y;\n ctx.moveTo(x + l, y + t);\n break;\n\n case 'C': // bezierCurveTo, absolute\n x = current[5];\n y = current[6];\n controlX = current[3];\n controlY = current[4];\n ctx.bezierCurveTo(\n current[1] + l,\n current[2] + t,\n controlX + l,\n controlY + t,\n x + l,\n y + t\n );\n break;\n\n case 'Q': // quadraticCurveTo, absolute\n ctx.quadraticCurveTo(\n current[1] + l,\n current[2] + t,\n current[3] + l,\n current[4] + t\n );\n x = current[3];\n y = current[4];\n controlX = current[1];\n controlY = current[2];\n break;\n\n case 'z':\n case 'Z':\n x = subpathStartX;\n y = subpathStartY;\n ctx.closePath();\n break;\n }\n }\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx context to render path on\n */\n _render: function (ctx) {\n this._renderPathCommands(ctx);\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Returns string representation of an instance\n * @return {String} string representation of an instance\n */\n toString: function () {\n return (\n '#'\n );\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return extend(this.callSuper('toObject', propertiesToInclude), {\n path: this.path.map(function (item) {\n return item.slice();\n }),\n });\n },\n\n /**\n * Returns dataless object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toDatalessObject: function (propertiesToInclude) {\n var o = this.toObject(['sourcePath'].concat(propertiesToInclude));\n if (o.sourcePath) {\n delete o.path;\n }\n return o;\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var path = fabric.util.joinPath(this.path);\n return [\n '\\n',\n ];\n },\n\n _getOffsetTransform: function () {\n var digits = config.NUM_FRACTION_DIGITS;\n return (\n ' translate(' +\n toFixed(-this.pathOffset.x, digits) +\n ', ' +\n toFixed(-this.pathOffset.y, digits) +\n ')'\n );\n },\n\n /**\n * Returns svg clipPath representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toClipPathSVG: function (reviver) {\n var additionalTransform = this._getOffsetTransform();\n return (\n '\\t' +\n this._createBaseClipPathSVGMarkup(this._toSVG(), {\n reviver: reviver,\n additionalTransform: additionalTransform,\n })\n );\n },\n\n /**\n * Returns svg representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toSVG: function (reviver) {\n var additionalTransform = this._getOffsetTransform();\n return this._createBaseSVGMarkup(this._toSVG(), {\n reviver: reviver,\n additionalTransform: additionalTransform,\n });\n },\n /* _TO_SVG_END_ */\n\n /**\n * Returns number representation of an instance complexity\n * @return {Number} complexity of this instance\n */\n complexity: function () {\n return this.path.length;\n },\n\n /**\n * @private\n */\n _calcDimensions: function () {\n var aX = [],\n aY = [],\n current, // current instruction\n subpathStartX = 0,\n subpathStartY = 0,\n x = 0, // current x\n y = 0, // current y\n bounds;\n\n for (var i = 0, len = this.path.length; i < len; ++i) {\n current = this.path[i];\n\n switch (\n current[0] // first letter\n ) {\n case 'L': // lineto, absolute\n x = current[1];\n y = current[2];\n bounds = [];\n break;\n\n case 'M': // moveTo, absolute\n x = current[1];\n y = current[2];\n subpathStartX = x;\n subpathStartY = y;\n bounds = [];\n break;\n\n case 'C': // bezierCurveTo, absolute\n bounds = fabric.util.getBoundsOfCurve(\n x,\n y,\n current[1],\n current[2],\n current[3],\n current[4],\n current[5],\n current[6]\n );\n x = current[5];\n y = current[6];\n break;\n\n case 'Q': // quadraticCurveTo, absolute\n bounds = fabric.util.getBoundsOfCurve(\n x,\n y,\n current[1],\n current[2],\n current[1],\n current[2],\n current[3],\n current[4]\n );\n x = current[3];\n y = current[4];\n break;\n\n case 'z':\n case 'Z':\n x = subpathStartX;\n y = subpathStartY;\n break;\n }\n bounds.forEach(function (point) {\n aX.push(point.x);\n aY.push(point.y);\n });\n aX.push(x);\n aY.push(y);\n }\n\n var minX = Math.min(...aX) || 0,\n minY = Math.min(...aY) || 0,\n maxX = Math.max(...aX) || 0,\n maxY = Math.max(...aY) || 0,\n deltaX = maxX - minX,\n deltaY = maxY - minY;\n\n return {\n left: minX,\n top: minY,\n width: deltaX,\n height: deltaY,\n };\n },\n }\n );\n\n /**\n * Creates an instance of fabric.Path from an object\n * @static\n * @memberOf fabric.Path\n * @param {Object} object\n * @returns {Promise}\n */\n fabric.Path.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Path, object, {\n extraParam: 'path',\n });\n };\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by `fabric.Path.fromElement`)\n * @static\n * @memberOf fabric.Path\n * @see http://www.w3.org/TR/SVG/paths.html#PathElement\n */\n fabric.Path.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(['d']);\n\n /**\n * Creates an instance of fabric.Path from an SVG element\n * @static\n * @memberOf fabric.Path\n * @param {SVGElement} element to parse\n * @param {Function} callback Callback to invoke when an fabric.Path instance is created\n * @param {Object} [options] Options object\n * @param {Function} [callback] Options callback invoked after parsing is finished\n */\n fabric.Path.fromElement = function (element, callback, options) {\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Path.ATTRIBUTE_NAMES\n );\n parsedAttributes.fromSVG = true;\n callback(\n new fabric.Path(parsedAttributes.d, extend(parsedAttributes, options))\n );\n };\n /* _FROM_SVG_END_ */\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n multiplyTransformMatrices = fabric.util.multiplyTransformMatrices,\n invertTransform = fabric.util.invertTransform,\n transformPoint = fabric.util.transformPoint,\n applyTransformToObject = fabric.util.applyTransformToObject,\n degreesToRadians = fabric.util.degreesToRadians,\n clone = fabric.util.object.clone;\n /**\n * Group class\n * @class fabric.Group\n * @extends fabric.Object\n * @mixes fabric.Collection\n * @fires layout once layout completes\n * @see {@link fabric.Group#initialize} for constructor definition\n */\n fabric.Group = fabric.util.createClass(\n fabric.Object,\n fabric.Collection,\n /** @lends fabric.Group.prototype */ {\n /**\n * Type of an object\n * @type string\n * @default\n */\n type: 'group',\n\n /**\n * Specifies the **layout strategy** for instance\n * Used by `getLayoutStrategyResult` to calculate layout\n * `fit-content`, `fit-content-lazy`, `fixed`, `clip-path` are supported out of the box\n * @type string\n * @default\n */\n layout: 'fit-content',\n\n /**\n * Width of stroke\n * @type Number\n */\n strokeWidth: 0,\n\n /**\n * List of properties to consider when checking if state\n * of an object is changed (fabric.Object#hasStateChanged)\n * as well as for history (undo/redo) purposes\n * @type string[]\n */\n stateProperties: fabric.Object.prototype.stateProperties.concat('layout'),\n\n /**\n * Used to optimize performance\n * set to `false` if you don't need contained objects to be targets of events\n * @default\n * @type boolean\n */\n subTargetCheck: false,\n\n /**\n * Used to allow targeting of object inside groups.\n * set to true if you want to select an object inside a group.\\\n * **REQUIRES** `subTargetCheck` set to true\n * @default\n * @type boolean\n */\n interactive: false,\n\n /**\n * Used internally to optimize performance\n * Once an object is selected, instance is rendered without the selected object.\n * This way instance is cached only once for the entire interaction with the selected object.\n * @private\n */\n _activeObjects: undefined,\n\n /**\n * Constructor\n *\n * @param {fabric.Object[]} [objects] instance objects\n * @param {Object} [options] Options object\n * @param {boolean} [objectsRelativeToGroup] true if objects exist in group coordinate plane\n * @return {fabric.Group} thisArg\n */\n initialize: function (objects, options, objectsRelativeToGroup) {\n this._objects = objects || [];\n this._activeObjects = [];\n this.__objectMonitor = this.__objectMonitor.bind(this);\n this.__objectSelectionTracker = this.__objectSelectionMonitor.bind(\n this,\n true\n );\n this.__objectSelectionDisposer = this.__objectSelectionMonitor.bind(\n this,\n false\n );\n this._firstLayoutDone = false;\n // setting angle, skewX, skewY must occur after initial layout\n this.callSuper(\n 'initialize',\n Object.assign({}, options, { angle: 0, skewX: 0, skewY: 0 })\n );\n this.forEachObject(function (object) {\n this.enterGroup(object, false);\n }, this);\n this._applyLayoutStrategy({\n type: 'initialization',\n options: options,\n objectsRelativeToGroup: objectsRelativeToGroup,\n });\n },\n\n /**\n * @private\n * @param {string} key\n * @param {*} value\n */\n _set: function (key, value) {\n var prev = this[key];\n this.callSuper('_set', key, value);\n if (key === 'canvas' && prev !== value) {\n this.forEachObject(function (object) {\n object._set(key, value);\n });\n }\n if (key === 'layout' && prev !== value) {\n this._applyLayoutStrategy({\n type: 'layout_change',\n layout: value,\n prevLayout: prev,\n });\n }\n if (key === 'interactive') {\n this.forEachObject(this._watchObject.bind(this, value));\n }\n return this;\n },\n\n /**\n * @private\n */\n _shouldSetNestedCoords: function () {\n return this.subTargetCheck;\n },\n\n /**\n * Override this method to enhance performance (for groups with a lot of objects).\n * If Overriding, be sure not pass illegal objects to group - it will break your app.\n * @private\n */\n _filterObjectsBeforeEnteringGroup: function (objects) {\n return objects.filter(function (object, index, array) {\n // can enter AND is the first occurrence of the object in the passed args (to prevent adding duplicates)\n return this.canEnterGroup(object) && array.indexOf(object) === index;\n }, this);\n },\n\n /**\n * Add objects\n * @param {...fabric.Object} objects\n */\n add: function () {\n var allowedObjects = this._filterObjectsBeforeEnteringGroup(\n Array.from(arguments)\n );\n fabric.Collection.add.call(this, allowedObjects, this._onObjectAdded);\n this._onAfterObjectsChange('added', allowedObjects);\n },\n\n /**\n * Inserts an object into collection at specified index\n * @param {fabric.Object | fabric.Object[]} objects Object to insert\n * @param {Number} index Index to insert object at\n */\n insertAt: function (objects, index) {\n var allowedObjects = this._filterObjectsBeforeEnteringGroup(\n Array.isArray(objects) ? objects : [objects]\n );\n fabric.Collection.insertAt.call(\n this,\n allowedObjects,\n index,\n this._onObjectAdded\n );\n this._onAfterObjectsChange('added', allowedObjects);\n },\n\n /**\n * Remove objects\n * @param {...fabric.Object} objects\n * @returns {fabric.Object[]} removed objects\n */\n remove: function () {\n var removed = fabric.Collection.remove.call(\n this,\n arguments,\n this._onObjectRemoved\n );\n this._onAfterObjectsChange('removed', removed);\n return removed;\n },\n\n /**\n * Remove all objects\n * @returns {fabric.Object[]} removed objects\n */\n removeAll: function () {\n this._activeObjects = [];\n return this.remove.apply(this, this._objects.slice());\n },\n\n /**\n * invalidates layout on object modified\n * @private\n */\n __objectMonitor: function (opt) {\n this._applyLayoutStrategy(\n Object.assign({}, opt, {\n type: 'object_modified',\n })\n );\n this._set('dirty', true);\n },\n\n /**\n * keeps track of the selected objects\n * @private\n */\n __objectSelectionMonitor: function (selected, opt) {\n var object = opt.target;\n if (selected) {\n this._activeObjects.push(object);\n this._set('dirty', true);\n } else if (this._activeObjects.length > 0) {\n var index = this._activeObjects.indexOf(object);\n if (index > -1) {\n this._activeObjects.splice(index, 1);\n this._set('dirty', true);\n }\n }\n },\n\n /**\n * @private\n * @param {boolean} watch\n * @param {fabric.Object} object\n */\n _watchObject: function (watch, object) {\n var directive = watch ? 'on' : 'off';\n // make sure we listen only once\n watch && this._watchObject(false, object);\n object[directive]('changed', this.__objectMonitor);\n object[directive]('modified', this.__objectMonitor);\n object[directive]('selected', this.__objectSelectionTracker);\n object[directive]('deselected', this.__objectSelectionDisposer);\n },\n\n /**\n * Checks if object can enter group and logs relevant warnings\n * @private\n * @param {fabric.Object} object\n * @returns\n */\n canEnterGroup: function (object) {\n if (object === this || this.isDescendantOf(object)) {\n // prevent circular object tree\n /* _DEV_MODE_START_ */\n console.error(\n 'fabric.Group: circular object trees are not supported, this call has no effect'\n );\n /* _DEV_MODE_END_ */\n return false;\n } else if (this._objects.indexOf(object) !== -1) {\n // is already in the objects array\n /* _DEV_MODE_START_ */\n console.error(\n 'fabric.Group: duplicate objects are not supported inside group, this call has no effect'\n );\n /* _DEV_MODE_END_ */\n return false;\n }\n return true;\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane\n * @returns {boolean} true if object entered group\n */\n enterGroup: function (object, removeParentTransform) {\n if (object.group) {\n object.group.remove(object);\n }\n this._enterGroup(object, removeParentTransform);\n return true;\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane\n */\n _enterGroup: function (object, removeParentTransform) {\n if (removeParentTransform) {\n // can this be converted to utils (sendObjectToPlane)?\n applyTransformToObject(\n object,\n multiplyTransformMatrices(\n invertTransform(this.calcTransformMatrix()),\n object.calcTransformMatrix()\n )\n );\n }\n this._shouldSetNestedCoords() && object.setCoords();\n object._set('group', this);\n object._set('canvas', this.canvas);\n this.interactive && this._watchObject(true, object);\n var activeObject =\n this.canvas &&\n this.canvas.getActiveObject &&\n this.canvas.getActiveObject();\n // if we are adding the activeObject in a group\n if (\n activeObject &&\n (activeObject === object || object.isDescendantOf(activeObject))\n ) {\n this._activeObjects.push(object);\n }\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it\n */\n exitGroup: function (object, removeParentTransform) {\n this._exitGroup(object, removeParentTransform);\n object._set('canvas', undefined);\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it\n */\n _exitGroup: function (object, removeParentTransform) {\n object._set('group', undefined);\n if (!removeParentTransform) {\n applyTransformToObject(\n object,\n multiplyTransformMatrices(\n this.calcTransformMatrix(),\n object.calcTransformMatrix()\n )\n );\n object.setCoords();\n }\n this._watchObject(false, object);\n var index =\n this._activeObjects.length > 0\n ? this._activeObjects.indexOf(object)\n : -1;\n if (index > -1) {\n this._activeObjects.splice(index, 1);\n }\n },\n\n /**\n * @private\n * @param {'added'|'removed'} type\n * @param {fabric.Object[]} targets\n */\n _onAfterObjectsChange: function (type, targets) {\n this._applyLayoutStrategy({\n type: type,\n targets: targets,\n });\n this._set('dirty', true);\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n */\n _onObjectAdded: function (object) {\n this.enterGroup(object, true);\n object.fire('added', { target: this });\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n */\n _onRelativeObjectAdded: function (object) {\n this.enterGroup(object, false);\n object.fire('added', { target: this });\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it\n */\n _onObjectRemoved: function (object, removeParentTransform) {\n this.exitGroup(object, removeParentTransform);\n object.fire('removed', { target: this });\n },\n\n /**\n * Decide if the object should cache or not. Create its own cache level\n * needsItsOwnCache should be used when the object drawing method requires\n * a cache step. None of the fabric classes requires it.\n * Generally you do not cache objects in groups because the group is already cached.\n * @return {Boolean}\n */\n shouldCache: function () {\n var ownCache = fabric.Object.prototype.shouldCache.call(this);\n if (ownCache) {\n for (var i = 0; i < this._objects.length; i++) {\n if (this._objects[i].willDrawShadow()) {\n this.ownCaching = false;\n return false;\n }\n }\n }\n return ownCache;\n },\n\n /**\n * Check if this object or a child object will cast a shadow\n * @return {Boolean}\n */\n willDrawShadow: function () {\n if (fabric.Object.prototype.willDrawShadow.call(this)) {\n return true;\n }\n for (var i = 0; i < this._objects.length; i++) {\n if (this._objects[i].willDrawShadow()) {\n return true;\n }\n }\n return false;\n },\n\n /**\n * Check if instance or its group are caching, recursively up\n * @return {Boolean}\n */\n isOnACache: function () {\n return this.ownCaching || (!!this.group && this.group.isOnACache());\n },\n\n /**\n * Execute the drawing operation for an object on a specified context\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawObject: function (ctx) {\n this._renderBackground(ctx);\n for (var i = 0; i < this._objects.length; i++) {\n this._objects[i].render(ctx);\n }\n this._drawClipPath(ctx, this.clipPath);\n },\n\n /**\n * Check if cache is dirty\n */\n isCacheDirty: function (skipCanvas) {\n if (this.callSuper('isCacheDirty', skipCanvas)) {\n return true;\n }\n if (!this.statefullCache) {\n return false;\n }\n for (var i = 0; i < this._objects.length; i++) {\n if (this._objects[i].isCacheDirty(true)) {\n if (this._cacheCanvas) {\n // if this group has not a cache canvas there is nothing to clean\n var x = this.cacheWidth / this.zoomX,\n y = this.cacheHeight / this.zoomY;\n this._cacheContext.clearRect(-x / 2, -y / 2, x, y);\n }\n return true;\n }\n }\n return false;\n },\n\n /**\n * @override\n * @return {Boolean}\n */\n setCoords: function () {\n this.callSuper('setCoords');\n this._shouldSetNestedCoords() &&\n this.forEachObject(function (object) {\n object.setCoords();\n });\n },\n\n /**\n * Renders instance on a given context\n * @param {CanvasRenderingContext2D} ctx context to render instance on\n */\n render: function (ctx) {\n // used to inform objects not to double opacity\n this._transformDone = true;\n this.callSuper('render', ctx);\n this._transformDone = false;\n },\n\n /**\n * @public\n * @param {Partial & { layout?: string }} [context] pass values to use for layout calculations\n */\n triggerLayout: function (context) {\n if (context && context.layout) {\n context.prevLayout = this.layout;\n this.layout = context.layout;\n }\n this._applyLayoutStrategy({ type: 'imperative', context: context });\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {Point} diff\n */\n _adjustObjectPosition: function (object, diff) {\n object.set({\n left: object.left + diff.x,\n top: object.top + diff.y,\n });\n },\n\n /**\n * initial layout logic:\n * calculate bbox of objects (if necessary) and translate it according to options received from the constructor (left, top, width, height)\n * so it is placed in the center of the bbox received from the constructor\n *\n * @private\n * @param {LayoutContext} context\n */\n _applyLayoutStrategy: function (context) {\n var isFirstLayout = context.type === 'initialization';\n if (!isFirstLayout && !this._firstLayoutDone) {\n // reject layout requests before initialization layout\n return;\n }\n var options = isFirstLayout && context.options;\n var initialTransform = options && {\n angle: options.angle || 0,\n skewX: options.skewX || 0,\n skewY: options.skewY || 0,\n };\n var center = this.getRelativeCenterPoint();\n var result = this.getLayoutStrategyResult(\n this.layout,\n this._objects.concat(),\n context\n );\n if (result) {\n // handle positioning\n var newCenter = new Point(result.centerX, result.centerY);\n var vector = center\n .subtract(newCenter)\n .add(new Point(result.correctionX || 0, result.correctionY || 0));\n var diff = transformPoint(\n vector,\n invertTransform(this.calcOwnMatrix()),\n true\n );\n // set dimensions\n this.set({ width: result.width, height: result.height });\n // adjust objects to account for new center\n !context.objectsRelativeToGroup &&\n this.forEachObject(function (object) {\n this._adjustObjectPosition(object, diff);\n }, this);\n // clip path as well\n !isFirstLayout &&\n this.layout !== 'clip-path' &&\n this.clipPath &&\n !this.clipPath.absolutePositioned &&\n this._adjustObjectPosition(this.clipPath, diff);\n if (!newCenter.eq(center) || initialTransform) {\n // set position\n this.setPositionByOrigin(newCenter, 'center', 'center');\n initialTransform && this.set(initialTransform);\n this.setCoords();\n }\n } else if (isFirstLayout) {\n // fill `result` with initial values for the layout hook\n result = {\n centerX: center.x,\n centerY: center.y,\n width: this.width,\n height: this.height,\n };\n initialTransform && this.set(initialTransform);\n } else {\n // no `result` so we return\n return;\n }\n // flag for next layouts\n this._firstLayoutDone = true;\n // fire layout hook and event (event will fire only for layouts after initialization layout)\n this.onLayout(context, result);\n this.fire('layout', {\n context: context,\n result: result,\n diff: diff,\n });\n // recursive up\n if (this.group && this.group._applyLayoutStrategy) {\n // append the path recursion to context\n if (!context.path) {\n context.path = [];\n }\n context.path.push(this);\n // all parents should invalidate their layout\n this.group._applyLayoutStrategy(context);\n }\n },\n\n /**\n * Override this method to customize layout.\n * If you need to run logic once layout completes use `onLayout`\n * @public\n *\n * @typedef {'initialization'|'object_modified'|'added'|'removed'|'layout_change'|'imperative'} LayoutContextType\n *\n * @typedef LayoutContext context object with data regarding what triggered the call\n * @property {LayoutContextType} type\n * @property {fabric.Object[]} [path] array of objects starting from the object that triggered the call to the current one\n *\n * @typedef LayoutResult positioning and layout data **relative** to instance's parent\n * @property {number} centerX new centerX as measured by the containing plane (same as `left` with `originX` set to `center`)\n * @property {number} centerY new centerY as measured by the containing plane (same as `top` with `originY` set to `center`)\n * @property {number} [correctionX] correctionX to translate objects by, measured as `centerX`\n * @property {number} [correctionY] correctionY to translate objects by, measured as `centerY`\n * @property {number} width\n * @property {number} height\n *\n * @param {string} layoutDirective\n * @param {fabric.Object[]} objects\n * @param {LayoutContext} context\n * @returns {LayoutResult | undefined}\n */\n getLayoutStrategyResult: function (layoutDirective, objects, context) {\n // eslint-disable-line no-unused-vars\n // `fit-content-lazy` performance enhancement\n // skip if instance had no objects before the `added` event because it may have kept layout after removing all previous objects\n if (\n layoutDirective === 'fit-content-lazy' &&\n context.type === 'added' &&\n objects.length > context.targets.length\n ) {\n // calculate added objects' bbox with existing bbox\n var addedObjects = context.targets.concat(this);\n return this.prepareBoundingBox(\n layoutDirective,\n addedObjects,\n context\n );\n } else if (\n layoutDirective === 'fit-content' ||\n layoutDirective === 'fit-content-lazy' ||\n (layoutDirective === 'fixed' &&\n (context.type === 'initialization' ||\n context.type === 'imperative'))\n ) {\n return this.prepareBoundingBox(layoutDirective, objects, context);\n } else if (layoutDirective === 'clip-path' && this.clipPath) {\n var clipPath = this.clipPath;\n var clipPathSizeAfter = clipPath._getTransformedDimensions();\n if (\n clipPath.absolutePositioned &&\n (context.type === 'initialization' ||\n context.type === 'layout_change')\n ) {\n // we want the center point to exist in group's containing plane\n var clipPathCenter = clipPath.getCenterPoint();\n if (this.group) {\n // send point from canvas plane to group's containing plane\n var inv = invertTransform(this.group.calcTransformMatrix());\n clipPathCenter = transformPoint(clipPathCenter, inv);\n }\n return {\n centerX: clipPathCenter.x,\n centerY: clipPathCenter.y,\n width: clipPathSizeAfter.x,\n height: clipPathSizeAfter.y,\n };\n } else if (!clipPath.absolutePositioned) {\n var center;\n var clipPathRelativeCenter = clipPath.getRelativeCenterPoint(),\n // we want the center point to exist in group's containing plane, so we send it upwards\n clipPathCenter = transformPoint(\n clipPathRelativeCenter,\n this.calcOwnMatrix(),\n true\n );\n if (\n context.type === 'initialization' ||\n context.type === 'layout_change'\n ) {\n var bbox =\n this.prepareBoundingBox(layoutDirective, objects, context) ||\n {};\n center = new Point(bbox.centerX || 0, bbox.centerY || 0);\n return {\n centerX: center.x + clipPathCenter.x,\n centerY: center.y + clipPathCenter.y,\n correctionX: bbox.correctionX - clipPathCenter.x,\n correctionY: bbox.correctionY - clipPathCenter.y,\n width: clipPath.width,\n height: clipPath.height,\n };\n } else {\n center = this.getRelativeCenterPoint();\n return {\n centerX: center.x + clipPathCenter.x,\n centerY: center.y + clipPathCenter.y,\n width: clipPathSizeAfter.x,\n height: clipPathSizeAfter.y,\n };\n }\n }\n } else if (\n layoutDirective === 'svg' &&\n context.type === 'initialization'\n ) {\n var bbox = this.getObjectsBoundingBox(objects, true) || {};\n return Object.assign(bbox, {\n correctionX: -bbox.offsetX || 0,\n correctionY: -bbox.offsetY || 0,\n });\n }\n },\n\n /**\n * Override this method to customize layout.\n * A wrapper around {@link fabric.Group#getObjectsBoundingBox}\n * @public\n * @param {string} layoutDirective\n * @param {fabric.Object[]} objects\n * @param {LayoutContext} context\n * @returns {LayoutResult | undefined}\n */\n prepareBoundingBox: function (layoutDirective, objects, context) {\n if (context.type === 'initialization') {\n return this.prepareInitialBoundingBox(\n layoutDirective,\n objects,\n context\n );\n } else if (context.type === 'imperative' && context.context) {\n return Object.assign(\n this.getObjectsBoundingBox(objects) || {},\n context.context\n );\n } else {\n return this.getObjectsBoundingBox(objects);\n }\n },\n\n /**\n * Calculates center taking into account originX, originY while not being sure that width/height are initialized\n * @public\n * @param {string} layoutDirective\n * @param {fabric.Object[]} objects\n * @param {LayoutContext} context\n * @returns {LayoutResult | undefined}\n */\n prepareInitialBoundingBox: function (layoutDirective, objects, context) {\n var options = context.options || {},\n hasX = typeof options.left === 'number',\n hasY = typeof options.top === 'number',\n hasWidth = typeof options.width === 'number',\n hasHeight = typeof options.height === 'number';\n\n // performance enhancement\n // skip layout calculation if bbox is defined\n if (\n (hasX &&\n hasY &&\n hasWidth &&\n hasHeight &&\n context.objectsRelativeToGroup) ||\n objects.length === 0\n ) {\n // return nothing to skip layout\n return;\n }\n\n var bbox = this.getObjectsBoundingBox(objects) || {};\n var width = hasWidth ? this.width : bbox.width || 0,\n height = hasHeight ? this.height : bbox.height || 0,\n calculatedCenter = new Point(bbox.centerX || 0, bbox.centerY || 0),\n origin = new Point(\n this.resolveOriginX(this.originX),\n this.resolveOriginY(this.originY)\n ),\n size = new Point(width, height),\n strokeWidthVector = this._getTransformedDimensions({\n width: 0,\n height: 0,\n }),\n sizeAfter = this._getTransformedDimensions({\n width: width,\n height: height,\n strokeWidth: 0,\n }),\n bboxSizeAfter = this._getTransformedDimensions({\n width: bbox.width,\n height: bbox.height,\n strokeWidth: 0,\n }),\n rotationCorrection = new Point(0, 0);\n\n // calculate center and correction\n var originT = origin.scalarAdd(0.5);\n var originCorrection = sizeAfter.multiply(originT);\n var centerCorrection = new Point(\n hasWidth ? bboxSizeAfter.x / 2 : originCorrection.x,\n hasHeight ? bboxSizeAfter.y / 2 : originCorrection.y\n );\n var center = new Point(\n hasX\n ? this.left - (sizeAfter.x + strokeWidthVector.x) * origin.x\n : calculatedCenter.x - centerCorrection.x,\n hasY\n ? this.top - (sizeAfter.y + strokeWidthVector.y) * origin.y\n : calculatedCenter.y - centerCorrection.y\n );\n var offsetCorrection = new Point(\n hasX\n ? center.x -\n calculatedCenter.x +\n bboxSizeAfter.x * (hasWidth ? 0.5 : 0)\n : -(hasWidth\n ? (sizeAfter.x - strokeWidthVector.x) * 0.5\n : sizeAfter.x * originT.x),\n hasY\n ? center.y -\n calculatedCenter.y +\n bboxSizeAfter.y * (hasHeight ? 0.5 : 0)\n : -(hasHeight\n ? (sizeAfter.y - strokeWidthVector.y) * 0.5\n : sizeAfter.y * originT.y)\n ).add(rotationCorrection);\n var correction = new Point(\n hasWidth ? -sizeAfter.x / 2 : 0,\n hasHeight ? -sizeAfter.y / 2 : 0\n ).add(offsetCorrection);\n\n return {\n centerX: center.x,\n centerY: center.y,\n correctionX: correction.x,\n correctionY: correction.y,\n width: size.x,\n height: size.y,\n };\n },\n\n /**\n * Calculate the bbox of objects relative to instance's containing plane\n * @public\n * @param {fabric.Object[]} objects\n * @returns {LayoutResult | null} bounding box\n */\n getObjectsBoundingBox: function (objects, ignoreOffset) {\n if (objects.length === 0) {\n return null;\n }\n var objCenter, sizeVector, min, max, a, b;\n objects.forEach(function (object, i) {\n objCenter = object.getRelativeCenterPoint();\n sizeVector = object._getTransformedDimensions().scalarDivide(2);\n if (object.angle) {\n var rad = degreesToRadians(object.angle),\n sin = Math.abs(fabric.util.sin(rad)),\n cos = Math.abs(fabric.util.cos(rad)),\n rx = sizeVector.x * cos + sizeVector.y * sin,\n ry = sizeVector.x * sin + sizeVector.y * cos;\n sizeVector = new Point(rx, ry);\n }\n a = objCenter.subtract(sizeVector);\n b = objCenter.add(sizeVector);\n if (i === 0) {\n min = new Point(Math.min(a.x, b.x), Math.min(a.y, b.y));\n max = new Point(Math.max(a.x, b.x), Math.max(a.y, b.y));\n } else {\n min.setXY(Math.min(min.x, a.x, b.x), Math.min(min.y, a.y, b.y));\n max.setXY(Math.max(max.x, a.x, b.x), Math.max(max.y, a.y, b.y));\n }\n });\n\n var size = max.subtract(min),\n relativeCenter = ignoreOffset\n ? size.scalarDivide(2)\n : min.midPointFrom(max),\n // we send `relativeCenter` up to group's containing plane\n offset = transformPoint(min, this.calcOwnMatrix()),\n center = transformPoint(relativeCenter, this.calcOwnMatrix());\n\n return {\n offsetX: offset.x,\n offsetY: offset.y,\n centerX: center.x,\n centerY: center.y,\n width: size.x,\n height: size.y,\n };\n },\n\n /**\n * Hook that is called once layout has completed.\n * Provided for layout customization, override if necessary.\n * Complements `getLayoutStrategyResult`, which is called at the beginning of layout.\n * @public\n * @param {LayoutContext} context layout context\n * @param {LayoutResult} result layout result\n */\n onLayout: function (/* context, result */) {\n // override by subclass\n },\n\n /**\n *\n * @private\n * @param {'toObject'|'toDatalessObject'} [method]\n * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @returns {fabric.Object[]} serialized objects\n */\n __serializeObjects: function (method, propertiesToInclude) {\n var _includeDefaultValues = this.includeDefaultValues;\n return this._objects\n .filter(function (obj) {\n return !obj.excludeFromExport;\n })\n .map(function (obj) {\n var originalDefaults = obj.includeDefaultValues;\n obj.includeDefaultValues = _includeDefaultValues;\n var data = obj[method || 'toObject'](propertiesToInclude);\n obj.includeDefaultValues = originalDefaults;\n //delete data.version;\n return data;\n });\n },\n\n /**\n * Returns object representation of an instance\n * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n var obj = this.callSuper(\n 'toObject',\n ['layout', 'subTargetCheck', 'interactive'].concat(\n propertiesToInclude\n )\n );\n obj.objects = this.__serializeObjects('toObject', propertiesToInclude);\n return obj;\n },\n\n toString: function () {\n return '#';\n },\n\n dispose: function () {\n this._activeObjects = [];\n this.forEachObject(function (object) {\n this._watchObject(false, object);\n object.dispose && object.dispose();\n }, this);\n this.callSuper('dispose');\n },\n\n /* _TO_SVG_START_ */\n\n /**\n * @private\n */\n _createSVGBgRect: function (reviver) {\n if (!this.backgroundColor) {\n return '';\n }\n var fillStroke = fabric.Rect.prototype._toSVG.call(this, reviver);\n var commons = fillStroke.indexOf('COMMON_PARTS');\n fillStroke[commons] = 'for=\"group\" ';\n return fillStroke.join('');\n },\n\n /**\n * Returns svg representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n _toSVG: function (reviver) {\n var svgString = ['\\n'];\n var bg = this._createSVGBgRect(reviver);\n bg && svgString.push('\\t\\t', bg);\n for (var i = 0; i < this._objects.length; i++) {\n svgString.push('\\t\\t', this._objects[i].toSVG(reviver));\n }\n svgString.push('\\n');\n return svgString;\n },\n\n /**\n * Returns styles-string for svg-export, specific version for group\n * @return {String}\n */\n getSvgStyles: function () {\n var opacity =\n typeof this.opacity !== 'undefined' && this.opacity !== 1\n ? 'opacity: ' + this.opacity + ';'\n : '',\n visibility = this.visible ? '' : ' visibility: hidden;';\n return [opacity, this.getSvgFilter(), visibility].join('');\n },\n\n /**\n * Returns svg clipPath representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toClipPathSVG: function (reviver) {\n var svgString = [];\n var bg = this._createSVGBgRect(reviver);\n bg && svgString.push('\\t', bg);\n for (var i = 0; i < this._objects.length; i++) {\n svgString.push('\\t', this._objects[i].toClipPathSVG(reviver));\n }\n return this._createBaseClipPathSVGMarkup(svgString, {\n reviver: reviver,\n });\n },\n /* _TO_SVG_END_ */\n }\n );\n\n /**\n * @todo support loading from svg\n * @private\n * @static\n * @memberOf fabric.Group\n * @param {Object} object Object to create a group from\n * @returns {Promise}\n */\n fabric.Group.fromObject = function (object) {\n var objects = object.objects || [],\n options = clone(object, true);\n delete options.objects;\n return Promise.all([\n fabric.util.enlivenObjects(objects),\n fabric.util.enlivenObjectEnlivables(options),\n ]).then(function (enlivened) {\n return new fabric.Group(\n enlivened[0],\n Object.assign(options, enlivened[1]),\n true\n );\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n\n /**\n * Group class\n * @class fabric.ActiveSelection\n * @extends fabric.Group\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#groups}\n * @see {@link fabric.ActiveSelection#initialize} for constructor definition\n */\n fabric.ActiveSelection = fabric.util.createClass(\n fabric.Group,\n /** @lends fabric.ActiveSelection.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'activeSelection',\n\n /**\n * @override\n */\n layout: 'fit-content',\n\n /**\n * @override\n */\n subTargetCheck: false,\n\n /**\n * @override\n */\n interactive: false,\n\n /**\n * Constructor\n *\n * @param {fabric.Object[]} [objects] instance objects\n * @param {Object} [options] Options object\n * @param {boolean} [objectsRelativeToGroup] true if objects exist in group coordinate plane\n * @return {fabric.ActiveSelection} thisArg\n */\n initialize: function (objects, options, objectsRelativeToGroup) {\n this.callSuper('initialize', objects, options, objectsRelativeToGroup);\n this.setCoords();\n },\n\n /**\n * @private\n */\n _shouldSetNestedCoords: function () {\n return true;\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane\n * @returns {boolean} true if object entered group\n */\n enterGroup: function (object, removeParentTransform) {\n if (object.group) {\n // save ref to group for later in order to return to it\n var parent = object.group;\n parent._exitGroup(object);\n object.__owningGroup = parent;\n }\n this._enterGroup(object, removeParentTransform);\n return true;\n },\n\n /**\n * we want objects to retain their canvas ref when exiting instance\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it\n */\n exitGroup: function (object, removeParentTransform) {\n this._exitGroup(object, removeParentTransform);\n var parent = object.__owningGroup;\n if (parent) {\n // return to owning group\n parent.enterGroup(object);\n delete object.__owningGroup;\n }\n },\n\n /**\n * @private\n * @param {'added'|'removed'} type\n * @param {fabric.Object[]} targets\n */\n _onAfterObjectsChange: function (type, targets) {\n var groups = [];\n targets.forEach(function (object) {\n object.group &&\n !groups.includes(object.group) &&\n groups.push(object.group);\n });\n if (type === 'removed') {\n // invalidate groups' layout and mark as dirty\n groups.forEach(function (group) {\n group._onAfterObjectsChange('added', targets);\n });\n } else {\n // mark groups as dirty\n groups.forEach(function (group) {\n group._set('dirty', true);\n });\n }\n },\n\n /**\n * If returns true, deselection is cancelled.\n * @since 2.0.0\n * @return {Boolean} [cancel]\n */\n onDeselect: function () {\n this.removeAll();\n return false;\n },\n\n /**\n * Returns string representation of a group\n * @return {String}\n */\n toString: function () {\n return '#';\n },\n\n /**\n * Decide if the object should cache or not. Create its own cache level\n * objectCaching is a global flag, wins over everything\n * needsItsOwnCache should be used when the object drawing method requires\n * a cache step. None of the fabric classes requires it.\n * Generally you do not cache objects in groups because the group outside is cached.\n * @return {Boolean}\n */\n shouldCache: function () {\n return false;\n },\n\n /**\n * Check if this group or its parent group are caching, recursively up\n * @return {Boolean}\n */\n isOnACache: function () {\n return false;\n },\n\n /**\n * Renders controls and borders for the object\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Object} [styleOverride] properties to override the object style\n * @param {Object} [childrenOverride] properties to override the children overrides\n */\n _renderControls: function (ctx, styleOverride, childrenOverride) {\n ctx.save();\n ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1;\n this.callSuper('_renderControls', ctx, styleOverride);\n var options = Object.assign({ hasControls: false }, childrenOverride, {\n forActiveSelection: true,\n });\n for (var i = 0; i < this._objects.length; i++) {\n this._objects[i]._renderControls(ctx, options);\n }\n ctx.restore();\n },\n }\n );\n\n /**\n * Returns {@link fabric.ActiveSelection} instance from an object representation\n * @static\n * @memberOf fabric.ActiveSelection\n * @param {Object} object Object to create a group from\n * @returns {Promise}\n */\n fabric.ActiveSelection.fromObject = function (object) {\n var objects = object.objects,\n options = fabric.util.object.clone(object, true);\n delete options.objects;\n return fabric.util\n .enlivenObjects(objects)\n .then(function (enlivenedObjects) {\n return new fabric.ActiveSelection(enlivenedObjects, options, true);\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n extend = fabric.util.object.extend;\n /**\n * Image class\n * @class fabric.Image\n * @extends fabric.Object\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#images}\n * @see {@link fabric.Image#initialize} for constructor definition\n */\n fabric.Image = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Image.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'image',\n\n /**\n * Width of a stroke.\n * For image quality a stroke multiple of 2 gives better results.\n * @type Number\n * @default\n */\n strokeWidth: 0,\n\n /**\n * When calling {@link fabric.Image.getSrc}, return value from element src with `element.getAttribute('src')`.\n * This allows for relative urls as image src.\n * @since 2.7.0\n * @type Boolean\n * @default\n */\n srcFromAttribute: false,\n\n /**\n * private\n * contains last value of scaleX to detect\n * if the Image got resized after the last Render\n * @type Number\n */\n _lastScaleX: 1,\n\n /**\n * private\n * contains last value of scaleY to detect\n * if the Image got resized after the last Render\n * @type Number\n */\n _lastScaleY: 1,\n\n /**\n * private\n * contains last value of scaling applied by the apply filter chain\n * @type Number\n */\n _filterScalingX: 1,\n\n /**\n * private\n * contains last value of scaling applied by the apply filter chain\n * @type Number\n */\n _filterScalingY: 1,\n\n /**\n * minimum scale factor under which any resizeFilter is triggered to resize the image\n * 0 will disable the automatic resize. 1 will trigger automatically always.\n * number bigger than 1 are not implemented yet.\n * @type Number\n */\n minimumScaleTrigger: 0.5,\n\n /**\n * List of properties to consider when checking if\n * state of an object is changed ({@link fabric.Object#hasStateChanged})\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties: fabric.Object.prototype.stateProperties.concat(\n 'cropX',\n 'cropY'\n ),\n\n /**\n * List of properties to consider when checking if cache needs refresh\n * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single\n * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty\n * and refreshed at the next render\n * @type Array\n */\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'cropX',\n 'cropY'\n ),\n\n /**\n * key used to retrieve the texture representing this image\n * @since 2.0.0\n * @type String\n * @default\n */\n cacheKey: '',\n\n /**\n * Image crop in pixels from original image size.\n * @since 2.0.0\n * @type Number\n * @default\n */\n cropX: 0,\n\n /**\n * Image crop in pixels from original image size.\n * @since 2.0.0\n * @type Number\n * @default\n */\n cropY: 0,\n\n /**\n * Indicates whether this canvas will use image smoothing when painting this image.\n * Also influence if the cacheCanvas for this image uses imageSmoothing\n * @since 4.0.0-beta.11\n * @type Boolean\n * @default\n */\n imageSmoothing: true,\n\n /**\n * Constructor\n * Image can be initialized with any canvas drawable or a string.\n * The string should be a url and will be loaded as an image.\n * Canvas and Image element work out of the box, while videos require extra code to work.\n * Please check video element events for seeking.\n * @param {HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | String} element Image element\n * @param {Object} [options] Options object\n * @return {fabric.Image} thisArg\n */\n initialize: function (element, options) {\n options || (options = {});\n this.filters = [];\n this.cacheKey = 'texture' + fabric.Object.__uid++;\n this.callSuper('initialize', options);\n this._initElement(element, options);\n },\n\n /**\n * Returns image element which this instance if based on\n * @return {HTMLImageElement} Image element\n */\n getElement: function () {\n return this._element || {};\n },\n\n /**\n * Sets image element for this instance to a specified one.\n * If filters defined they are applied to new image.\n * You might need to call `canvas.renderAll` and `object.setCoords` after replacing, to render new image and update controls area.\n * @param {HTMLImageElement} element\n * @param {Object} [options] Options object\n * @return {fabric.Image} thisArg\n * @chainable\n */\n setElement: function (element, options) {\n this.removeTexture(this.cacheKey);\n this.removeTexture(this.cacheKey + '_filtered');\n this._element = element;\n this._originalElement = element;\n this._initConfig(options);\n element.classList.add(fabric.Image.CSS_CANVAS);\n if (this.filters.length !== 0) {\n this.applyFilters();\n }\n // resizeFilters work on the already filtered copy.\n // we need to apply resizeFilters AFTER normal filters.\n // applyResizeFilters is run more often than normal filters\n // and is triggered by user interactions rather than dev code\n if (this.resizeFilter) {\n this.applyResizeFilters();\n }\n return this;\n },\n\n /**\n * Delete a single texture if in webgl mode\n */\n removeTexture: function (key) {\n var backend = fabric.filterBackend;\n if (backend && backend.evictCachesForKey) {\n backend.evictCachesForKey(key);\n }\n },\n\n /**\n * Delete textures, reference to elements and eventually JSDOM cleanup\n */\n dispose: function () {\n this.callSuper('dispose');\n this.removeTexture(this.cacheKey);\n this.removeTexture(this.cacheKey + '_filtered');\n this._cacheContext = undefined;\n ['_originalElement', '_element', '_filteredEl', '_cacheCanvas'].forEach(\n function (element) {\n fabric.util.cleanUpJsdomNode(this[element]);\n this[element] = undefined;\n }.bind(this)\n );\n },\n\n /**\n * Get the crossOrigin value (of the corresponding image element)\n */\n getCrossOrigin: function () {\n return (\n this._originalElement && (this._originalElement.crossOrigin || null)\n );\n },\n\n /**\n * Returns original size of an image\n * @return {Object} Object with \"width\" and \"height\" properties\n */\n getOriginalSize: function () {\n var element = this.getElement();\n return {\n width: element.naturalWidth || element.width,\n height: element.naturalHeight || element.height,\n };\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _stroke: function (ctx) {\n if (!this.stroke || this.strokeWidth === 0) {\n return;\n }\n var w = this.width / 2,\n h = this.height / 2;\n ctx.beginPath();\n ctx.moveTo(-w, -h);\n ctx.lineTo(w, -h);\n ctx.lineTo(w, h);\n ctx.lineTo(-w, h);\n ctx.lineTo(-w, -h);\n ctx.closePath();\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n var filters = [];\n\n this.filters.forEach(function (filterObj) {\n if (filterObj) {\n filters.push(filterObj.toObject());\n }\n });\n var object = extend(\n this.callSuper(\n 'toObject',\n ['cropX', 'cropY'].concat(propertiesToInclude)\n ),\n {\n src: this.getSrc(),\n crossOrigin: this.getCrossOrigin(),\n filters: filters,\n }\n );\n if (this.resizeFilter) {\n object.resizeFilter = this.resizeFilter.toObject();\n }\n return object;\n },\n\n /**\n * Returns true if an image has crop applied, inspecting values of cropX,cropY,width,height.\n * @return {Boolean}\n */\n hasCrop: function () {\n return (\n this.cropX ||\n this.cropY ||\n this.width < this._element.width ||\n this.height < this._element.height\n );\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var svgString = [],\n imageMarkup = [],\n strokeSvg,\n element = this._element,\n x = -this.width / 2,\n y = -this.height / 2,\n clipPath = '',\n imageRendering = '';\n if (!element) {\n return [];\n }\n if (this.hasCrop()) {\n var clipPathId = fabric.Object.__uid++;\n svgString.push(\n '\\n',\n '\\t\\n',\n '\\n'\n );\n clipPath = ' clip-path=\"url(#imageCrop_' + clipPathId + ')\" ';\n }\n if (!this.imageSmoothing) {\n imageRendering = '\" image-rendering=\"optimizeSpeed';\n }\n imageMarkup.push(\n '\\t element with actual transformation, then offsetting object to the top/left\n // so that object's center aligns with container's left/top\n '\" width=\"',\n element.width || element.naturalWidth,\n '\" height=\"',\n element.height || element.height,\n imageRendering,\n '\"',\n clipPath,\n '>\\n'\n );\n\n if (this.stroke || this.strokeDashArray) {\n var origFill = this.fill;\n this.fill = null;\n strokeSvg = [\n '\\t\\n',\n ];\n this.fill = origFill;\n }\n if (this.paintFirst !== 'fill') {\n svgString = svgString.concat(strokeSvg, imageMarkup);\n } else {\n svgString = svgString.concat(imageMarkup, strokeSvg);\n }\n return svgString;\n },\n /* _TO_SVG_END_ */\n\n /**\n * Returns source of an image\n * @param {Boolean} filtered indicates if the src is needed for svg\n * @return {String} Source of an image\n */\n getSrc: function (filtered) {\n var element = filtered ? this._element : this._originalElement;\n if (element) {\n if (element.toDataURL) {\n return element.toDataURL();\n }\n\n if (this.srcFromAttribute) {\n return element.getAttribute('src');\n } else {\n return element.src;\n }\n } else {\n return this.src || '';\n }\n },\n\n /**\n * Loads and sets source of an image\\\n * **IMPORTANT**: It is recommended to abort loading tasks before calling this method to prevent race conditions and unnecessary networking\n * @param {String} src Source string (URL)\n * @param {Object} [options] Options object\n * @param {AbortSignal} [options.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @param {String} [options.crossOrigin] crossOrigin value (one of \"\", \"anonymous\", \"use-credentials\")\n * @see https://developer.mozilla.org/en-US/docs/HTML/CORS_settings_attributes\n * @return {Promise} thisArg\n */\n setSrc: function (src, options) {\n var _this = this;\n return fabric.util.loadImage(src, options).then(function (img) {\n _this.setElement(img, options);\n _this._setWidthHeight();\n return _this;\n });\n },\n\n /**\n * Returns string representation of an instance\n * @return {String} String representation of an instance\n */\n toString: function () {\n return '#';\n },\n\n applyResizeFilters: function () {\n var filter = this.resizeFilter,\n minimumScale = this.minimumScaleTrigger,\n objectScale = this.getTotalObjectScaling(),\n scaleX = objectScale.x,\n scaleY = objectScale.y,\n elementToFilter = this._filteredEl || this._originalElement;\n if (this.group) {\n this.set('dirty', true);\n }\n if (!filter || (scaleX > minimumScale && scaleY > minimumScale)) {\n this._element = elementToFilter;\n this._filterScalingX = 1;\n this._filterScalingY = 1;\n this._lastScaleX = scaleX;\n this._lastScaleY = scaleY;\n return;\n }\n if (!fabric.filterBackend) {\n fabric.filterBackend = fabric.initFilterBackend();\n }\n var canvasEl = fabric.util.createCanvasElement(),\n cacheKey = this._filteredEl\n ? this.cacheKey + '_filtered'\n : this.cacheKey,\n sourceWidth = elementToFilter.width,\n sourceHeight = elementToFilter.height;\n canvasEl.width = sourceWidth;\n canvasEl.height = sourceHeight;\n this._element = canvasEl;\n this._lastScaleX = filter.scaleX = scaleX;\n this._lastScaleY = filter.scaleY = scaleY;\n fabric.filterBackend.applyFilters(\n [filter],\n elementToFilter,\n sourceWidth,\n sourceHeight,\n this._element,\n cacheKey\n );\n this._filterScalingX = canvasEl.width / this._originalElement.width;\n this._filterScalingY = canvasEl.height / this._originalElement.height;\n },\n\n /**\n * Applies filters assigned to this image (from \"filters\" array) or from filter param\n * @method applyFilters\n * @param {Array} filters to be applied\n * @param {Boolean} forResizing specify if the filter operation is a resize operation\n * @return {thisArg} return the fabric.Image object\n * @chainable\n */\n applyFilters: function (filters) {\n filters = filters || this.filters || [];\n filters = filters.filter(function (filter) {\n return filter && !filter.isNeutralState();\n });\n this.set('dirty', true);\n\n // needs to clear out or WEBGL will not resize correctly\n this.removeTexture(this.cacheKey + '_filtered');\n\n if (filters.length === 0) {\n this._element = this._originalElement;\n this._filteredEl = null;\n this._filterScalingX = 1;\n this._filterScalingY = 1;\n return this;\n }\n\n var imgElement = this._originalElement,\n sourceWidth = imgElement.naturalWidth || imgElement.width,\n sourceHeight = imgElement.naturalHeight || imgElement.height;\n\n if (this._element === this._originalElement) {\n // if the element is the same we need to create a new element\n var canvasEl = fabric.util.createCanvasElement();\n canvasEl.width = sourceWidth;\n canvasEl.height = sourceHeight;\n this._element = canvasEl;\n this._filteredEl = canvasEl;\n } else {\n // clear the existing element to get new filter data\n // also dereference the eventual resized _element\n this._element = this._filteredEl;\n this._filteredEl\n .getContext('2d')\n .clearRect(0, 0, sourceWidth, sourceHeight);\n // we also need to resize again at next renderAll, so remove saved _lastScaleX/Y\n this._lastScaleX = 1;\n this._lastScaleY = 1;\n }\n if (!fabric.filterBackend) {\n fabric.filterBackend = fabric.initFilterBackend();\n }\n fabric.filterBackend.applyFilters(\n filters,\n this._originalElement,\n sourceWidth,\n sourceHeight,\n this._element,\n this.cacheKey\n );\n if (\n this._originalElement.width !== this._element.width ||\n this._originalElement.height !== this._element.height\n ) {\n this._filterScalingX =\n this._element.width / this._originalElement.width;\n this._filterScalingY =\n this._element.height / this._originalElement.height;\n }\n return this;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n ctx.imageSmoothingEnabled = this.imageSmoothing;\n if (\n this.isMoving !== true &&\n this.resizeFilter &&\n this._needsResize()\n ) {\n this.applyResizeFilters();\n }\n this._stroke(ctx);\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Paint the cached copy of the object on the target context.\n * it will set the imageSmoothing for the draw operation\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawCacheOnCanvas: function (ctx) {\n ctx.imageSmoothingEnabled = this.imageSmoothing;\n fabric.Object.prototype.drawCacheOnCanvas.call(this, ctx);\n },\n\n /**\n * Decide if the object should cache or not. Create its own cache level\n * needsItsOwnCache should be used when the object drawing method requires\n * a cache step. None of the fabric classes requires it.\n * Generally you do not cache objects in groups because the group outside is cached.\n * This is the special image version where we would like to avoid caching where possible.\n * Essentially images do not benefit from caching. They may require caching, and in that\n * case we do it. Also caching an image usually ends in a loss of details.\n * A full performance audit should be done.\n * @return {Boolean}\n */\n shouldCache: function () {\n return this.needsItsOwnCache();\n },\n\n _renderFill: function (ctx) {\n var elementToDraw = this._element;\n if (!elementToDraw) {\n return;\n }\n var scaleX = this._filterScalingX,\n scaleY = this._filterScalingY,\n w = this.width,\n h = this.height,\n min = Math.min,\n max = Math.max,\n // crop values cannot be lesser than 0.\n cropX = max(this.cropX, 0),\n cropY = max(this.cropY, 0),\n elWidth = elementToDraw.naturalWidth || elementToDraw.width,\n elHeight = elementToDraw.naturalHeight || elementToDraw.height,\n sX = cropX * scaleX,\n sY = cropY * scaleY,\n // the width height cannot exceed element width/height, starting from the crop offset.\n sW = min(w * scaleX, elWidth - sX),\n sH = min(h * scaleY, elHeight - sY),\n x = -w / 2,\n y = -h / 2,\n maxDestW = min(w, elWidth / scaleX - cropX),\n maxDestH = min(h, elHeight / scaleY - cropY);\n\n elementToDraw &&\n ctx.drawImage(\n elementToDraw,\n sX,\n sY,\n sW,\n sH,\n x,\n y,\n maxDestW,\n maxDestH\n );\n },\n\n /**\n * needed to check if image needs resize\n * @private\n */\n _needsResize: function () {\n var scale = this.getTotalObjectScaling();\n return scale.x !== this._lastScaleX || scale.y !== this._lastScaleY;\n },\n\n /**\n * @private\n */\n _resetWidthHeight: function () {\n this.set(this.getOriginalSize());\n },\n\n /**\n * The Image class's initialization method. This method is automatically\n * called by the constructor.\n * @private\n * @param {HTMLImageElement|String} element The element representing the image\n * @param {Object} [options] Options object\n */\n _initElement: function (element, options) {\n this.setElement(\n fabric.document.getElementById(element) || element,\n options\n );\n },\n\n /**\n * @private\n * @param {Object} [options] Options object\n */\n _initConfig: function (options) {\n options || (options = {});\n this.setOptions(options);\n this._setWidthHeight(options);\n },\n\n /**\n * @private\n * Set the width and the height of the image object, using the element or the\n * options.\n * @param {Object} [options] Object with width/height properties\n */\n _setWidthHeight: function (options) {\n options || (options = {});\n var el = this.getElement();\n this.width = options.width || el.naturalWidth || el.width || 0;\n this.height = options.height || el.naturalHeight || el.height || 0;\n },\n\n /**\n * Calculate offset for center and scale factor for the image in order to respect\n * the preserveAspectRatio attribute\n * @private\n * @return {Object}\n */\n parsePreserveAspectRatioAttribute: function () {\n var pAR = fabric.util.parsePreserveAspectRatioAttribute(\n this.preserveAspectRatio || ''\n ),\n rWidth = this._element.width,\n rHeight = this._element.height,\n scaleX = 1,\n scaleY = 1,\n offsetLeft = 0,\n offsetTop = 0,\n cropX = 0,\n cropY = 0,\n offset,\n pWidth = this.width,\n pHeight = this.height,\n parsedAttributes = { width: pWidth, height: pHeight };\n if (pAR && (pAR.alignX !== 'none' || pAR.alignY !== 'none')) {\n if (pAR.meetOrSlice === 'meet') {\n scaleX = scaleY = fabric.util.findScaleToFit(\n this._element,\n parsedAttributes\n );\n offset = (pWidth - rWidth * scaleX) / 2;\n if (pAR.alignX === 'Min') {\n offsetLeft = -offset;\n }\n if (pAR.alignX === 'Max') {\n offsetLeft = offset;\n }\n offset = (pHeight - rHeight * scaleY) / 2;\n if (pAR.alignY === 'Min') {\n offsetTop = -offset;\n }\n if (pAR.alignY === 'Max') {\n offsetTop = offset;\n }\n }\n if (pAR.meetOrSlice === 'slice') {\n scaleX = scaleY = fabric.util.findScaleToCover(\n this._element,\n parsedAttributes\n );\n offset = rWidth - pWidth / scaleX;\n if (pAR.alignX === 'Mid') {\n cropX = offset / 2;\n }\n if (pAR.alignX === 'Max') {\n cropX = offset;\n }\n offset = rHeight - pHeight / scaleY;\n if (pAR.alignY === 'Mid') {\n cropY = offset / 2;\n }\n if (pAR.alignY === 'Max') {\n cropY = offset;\n }\n rWidth = pWidth / scaleX;\n rHeight = pHeight / scaleY;\n }\n } else {\n scaleX = pWidth / rWidth;\n scaleY = pHeight / rHeight;\n }\n return {\n width: rWidth,\n height: rHeight,\n scaleX: scaleX,\n scaleY: scaleY,\n offsetLeft: offsetLeft,\n offsetTop: offsetTop,\n cropX: cropX,\n cropY: cropY,\n };\n },\n }\n );\n\n /**\n * Default CSS class name for canvas\n * @static\n * @type String\n * @default\n */\n fabric.Image.CSS_CANVAS = 'canvas-img';\n\n /**\n * Alias for getSrc\n * @static\n */\n fabric.Image.prototype.getSvgSrc = fabric.Image.prototype.getSrc;\n\n /**\n * Creates an instance of fabric.Image from its object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @param {object} [options] Options object\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Image.fromObject = function (object, options) {\n var _object = Object.assign({}, object),\n filters = _object.filters,\n resizeFilter = _object.resizeFilter;\n // the generic enliving will fail on filters for now\n delete _object.resizeFilter;\n delete _object.filters;\n var imageOptions = Object.assign({}, options, {\n crossOrigin: _object.crossOrigin,\n }),\n filterOptions = Object.assign({}, options, {\n namespace: fabric.Image.filters,\n });\n return Promise.all([\n fabric.util.loadImage(_object.src, imageOptions),\n filters && fabric.util.enlivenObjects(filters, filterOptions),\n resizeFilter && fabric.util.enlivenObjects([resizeFilter], filterOptions),\n fabric.util.enlivenObjectEnlivables(_object, options),\n ]).then(function (imgAndFilters) {\n _object.filters = imgAndFilters[1] || [];\n _object.resizeFilter = imgAndFilters[2] && imgAndFilters[2][0];\n return new fabric.Image(\n imgAndFilters[0],\n Object.assign(_object, imgAndFilters[3])\n );\n });\n };\n\n /**\n * Creates an instance of fabric.Image from an URL string\n * @static\n * @param {String} url URL to create an image from\n * @param {object} [options] Options object\n * @param {string} [options.crossOrigin] cors value for the image loading, default to anonymous\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Image.fromURL = function (url, options) {\n return fabric.util.loadImage(url, options || {}).then(function (img) {\n return new fabric.Image(img, options);\n });\n };\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Image.fromElement})\n * @static\n * @see {@link http://www.w3.org/TR/SVG/struct.html#ImageElement}\n */\n fabric.Image.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'x y width height preserveAspectRatio xlink:href crossOrigin image-rendering'.split(\n ' '\n )\n );\n\n /**\n * Returns {@link fabric.Image} instance from an SVG element\n * @static\n * @param {SVGElement} element Element to parse\n * @param {Object} [options] Options object\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @param {Function} callback Callback to execute when fabric.Image object is created\n * @return {fabric.Image} Instance of fabric.Image\n */\n fabric.Image.fromElement = function (element, callback, options) {\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Image.ATTRIBUTE_NAMES\n );\n fabric.Image.fromURL(\n parsedAttributes['xlink:href'],\n Object.assign({}, options || {}, parsedAttributes)\n ).then(function (fabricImage) {\n callback(fabricImage);\n });\n };\n /* _FROM_SVG_END_ */\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * @private\n * @return {Number} angle value\n */\n _getAngleValueForStraighten: function () {\n var angle = this.angle % 360;\n if (angle > 0) {\n return Math.round((angle - 1) / 90) * 90;\n }\n return Math.round(angle / 90) * 90;\n },\n\n /**\n * Straightens an object (rotating it from current angle to one of 0, 90, 180, 270, etc. depending on which is closer)\n * @return {fabric.Object} thisArg\n * @chainable\n */\n straighten: function () {\n return this.rotate(this._getAngleValueForStraighten());\n },\n\n /**\n * Same as {@link fabric.Object.prototype.straighten} but with animation\n * @param {Object} callbacks Object with callback functions\n * @param {Function} [callbacks.onComplete] Invoked on completion\n * @param {Function} [callbacks.onChange] Invoked on every step of animation\n * @return {fabric.Object} thisArg\n */\n fxStraighten: function (callbacks) {\n callbacks = callbacks || {};\n\n var empty = function () {},\n onComplete = callbacks.onComplete || empty,\n onChange = callbacks.onChange || empty,\n _this = this;\n\n return fabric.util.animate({\n target: this,\n startValue: this.get('angle'),\n endValue: this._getAngleValueForStraighten(),\n duration: this.FX_DURATION,\n onChange: function (value) {\n _this.rotate(value);\n onChange();\n },\n onComplete: function () {\n _this.setCoords();\n onComplete();\n },\n });\n },\n }\n );\n\n fabric.util.object.extend(\n fabric.StaticCanvas.prototype,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Straightens object, then rerenders canvas\n * @param {fabric.Object} object Object to straighten\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n straightenObject: function (object) {\n object.straighten();\n this.requestRenderAll();\n return this;\n },\n\n /**\n * Same as {@link fabric.Canvas.prototype.straightenObject}, but animated\n * @param {fabric.Object} object Object to straighten\n * @return {fabric.Canvas} thisArg\n */\n fxStraightenObject: function (object) {\n return object.fxStraighten({\n onChange: this.requestRenderAllBound,\n });\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\nimport { createCanvasElement } from '../util/misc/dom';\n\nexport const enum TWebGLPrecision {\n low = 'lowp',\n medium = 'mediump',\n high = 'highp',\n}\n\n/**\n * @todo remove once rollup supports transforming enums...\n * https://github.com/rollup/plugins/issues/463\n */\nconst WebGLPrecision = [\n TWebGLPrecision.low,\n TWebGLPrecision.medium,\n TWebGLPrecision.high,\n];\n\n/**\n * Lazy initialize WebGL contants\n */\nclass WebGLProbe {\n private initialized = false;\n\n private _maxTextureSize?: number;\n\n private _webGLPrecision?: TWebGLPrecision;\n\n get maxTextureSize() {\n this.queryWebGL();\n return this._maxTextureSize;\n }\n\n get webGLPrecision() {\n this.queryWebGL();\n return this._webGLPrecision;\n }\n\n /**\n * Tests if webgl supports certain precision\n * @param {WebGL} Canvas WebGL context to test on\n * @param {TWebGLPrecision} Precision to test can be any of following\n * @returns {Boolean} Whether the user's browser WebGL supports given precision.\n */\n private testPrecision(gl: WebGLRenderingContext, precision: TWebGLPrecision) {\n const fragmentSource = `precision ${precision} float;\\nvoid main(){}`;\n const fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);\n gl.shaderSource(fragmentShader, fragmentSource);\n gl.compileShader(fragmentShader);\n return !!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS);\n }\n\n /**\n * query browser for WebGL\n * @returns config object if true\n */\n private queryWebGL() {\n if (this.initialized || fabric.isLikelyNode) {\n return;\n }\n const canvas = createCanvasElement();\n const gl =\n canvas.getContext('webgl') || canvas.getContext('experimental-webgl');\n if (gl) {\n this._maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE);\n this._webGLPrecision = WebGLPrecision.find((key) =>\n this.testPrecision(gl, key)\n );\n console.log(`fabric: max texture size ${this._maxTextureSize}`);\n }\n this.initialized = true;\n }\n\n isSupported(textureSize: number) {\n return this.maxTextureSize && this.maxTextureSize >= textureSize;\n }\n}\n\nexport const webGLProbe = new WebGLProbe();\n","//@ts-nocheck\n\nimport { config } from '../config';\nimport { webGLProbe } from './WebGLProbe';\n\n(function (global) {\n var fabric = global.fabric;\n\n fabric.initFilterBackend = function () {\n if (\n config.enableGLFiltering &&\n webGLProbe.isSupported(config.textureSize)\n ) {\n return new fabric.WebglFilterBackend({ tileSize: config.textureSize });\n } else if (fabric.Canvas2dFilterBackend) {\n return new fabric.Canvas2dFilterBackend();\n }\n };\n\n fabric.WebglFilterBackend = WebglFilterBackend;\n\n /**\n * WebGL filter backend.\n */\n function WebglFilterBackend(options) {\n if (options && options.tileSize) {\n this.tileSize = options.tileSize;\n }\n this.setupGLContext(this.tileSize, this.tileSize);\n this.captureGPUInfo();\n }\n\n WebglFilterBackend.prototype =\n /** @lends fabric.WebglFilterBackend.prototype */ {\n tileSize: config.textureSize,\n\n /**\n * Experimental. This object is a sort of repository of help layers used to avoid\n * of recreating them during frequent filtering. If you are previewing a filter with\n * a slider you probably do not want to create help layers every filter step.\n * in this object there will be appended some canvases, created once, resized sometimes\n * cleared never. Clearing is left to the developer.\n **/\n resources: {},\n\n /**\n * Setup a WebGL context suitable for filtering, and bind any needed event handlers.\n */\n setupGLContext: function (width, height) {\n this.dispose();\n this.createWebGLCanvas(width, height);\n // eslint-disable-next-line\n this.aPosition = new Float32Array([0, 0, 0, 1, 1, 0, 1, 1]);\n this.chooseFastestCopyGLTo2DMethod(width, height);\n },\n\n /**\n * Pick a method to copy data from GL context to 2d canvas. In some browsers using\n * putImageData is faster than drawImage for that specific operation.\n */\n chooseFastestCopyGLTo2DMethod: function (width, height) {\n var canMeasurePerf = typeof window.performance !== 'undefined',\n canUseImageData;\n try {\n new ImageData(1, 1);\n canUseImageData = true;\n } catch (e) {\n canUseImageData = false;\n }\n // eslint-disable-next-line no-undef\n var canUseArrayBuffer = typeof ArrayBuffer !== 'undefined';\n // eslint-disable-next-line no-undef\n var canUseUint8Clamped = typeof Uint8ClampedArray !== 'undefined';\n\n if (\n !(\n canMeasurePerf &&\n canUseImageData &&\n canUseArrayBuffer &&\n canUseUint8Clamped\n )\n ) {\n return;\n }\n\n var targetCanvas = fabric.util.createCanvasElement();\n // eslint-disable-next-line no-undef\n var imageBuffer = new ArrayBuffer(width * height * 4);\n if (config.forceGLPutImageData) {\n this.imageBuffer = imageBuffer;\n this.copyGLTo2D = copyGLTo2DPutImageData;\n return;\n }\n var testContext = {\n imageBuffer: imageBuffer,\n destinationWidth: width,\n destinationHeight: height,\n targetCanvas: targetCanvas,\n };\n var startTime, drawImageTime, putImageDataTime;\n targetCanvas.width = width;\n targetCanvas.height = height;\n\n startTime = window.performance.now();\n copyGLTo2DDrawImage.call(testContext, this.gl, testContext);\n drawImageTime = window.performance.now() - startTime;\n\n startTime = window.performance.now();\n copyGLTo2DPutImageData.call(testContext, this.gl, testContext);\n putImageDataTime = window.performance.now() - startTime;\n\n if (drawImageTime > putImageDataTime) {\n this.imageBuffer = imageBuffer;\n this.copyGLTo2D = copyGLTo2DPutImageData;\n } else {\n this.copyGLTo2D = copyGLTo2DDrawImage;\n }\n },\n\n /**\n * Create a canvas element and associated WebGL context and attaches them as\n * class properties to the GLFilterBackend class.\n */\n createWebGLCanvas: function (width, height) {\n var canvas = fabric.util.createCanvasElement();\n canvas.width = width;\n canvas.height = height;\n var glOptions = {\n alpha: true,\n premultipliedAlpha: false,\n depth: false,\n stencil: false,\n antialias: false,\n },\n gl = canvas.getContext('webgl', glOptions);\n if (!gl) {\n gl = canvas.getContext('experimental-webgl', glOptions);\n }\n if (!gl) {\n return;\n }\n gl.clearColor(0, 0, 0, 0);\n // this canvas can fire webglcontextlost and webglcontextrestored\n this.canvas = canvas;\n this.gl = gl;\n },\n\n /**\n * Attempts to apply the requested filters to the source provided, drawing the filtered output\n * to the provided target canvas.\n *\n * @param {Array} filters The filters to apply.\n * @param {HTMLImageElement|HTMLCanvasElement} source The source to be filtered.\n * @param {Number} width The width of the source input.\n * @param {Number} height The height of the source input.\n * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn.\n * @param {String|undefined} cacheKey A key used to cache resources related to the source. If\n * omitted, caching will be skipped.\n */\n applyFilters: function (\n filters,\n source,\n width,\n height,\n targetCanvas,\n cacheKey\n ) {\n var gl = this.gl;\n var cachedTexture;\n if (cacheKey) {\n cachedTexture = this.getCachedTexture(cacheKey, source);\n }\n var pipelineState = {\n originalWidth: source.width || source.originalWidth,\n originalHeight: source.height || source.originalHeight,\n sourceWidth: width,\n sourceHeight: height,\n destinationWidth: width,\n destinationHeight: height,\n context: gl,\n sourceTexture: this.createTexture(\n gl,\n width,\n height,\n !cachedTexture && source\n ),\n targetTexture: this.createTexture(gl, width, height),\n originalTexture:\n cachedTexture ||\n this.createTexture(gl, width, height, !cachedTexture && source),\n passes: filters.length,\n webgl: true,\n aPosition: this.aPosition,\n programCache: this.programCache,\n pass: 0,\n filterBackend: this,\n targetCanvas: targetCanvas,\n };\n var tempFbo = gl.createFramebuffer();\n gl.bindFramebuffer(gl.FRAMEBUFFER, tempFbo);\n filters.forEach(function (filter) {\n filter && filter.applyTo(pipelineState);\n });\n resizeCanvasIfNeeded(pipelineState);\n this.copyGLTo2D(gl, pipelineState);\n gl.bindTexture(gl.TEXTURE_2D, null);\n gl.deleteTexture(pipelineState.sourceTexture);\n gl.deleteTexture(pipelineState.targetTexture);\n gl.deleteFramebuffer(tempFbo);\n targetCanvas.getContext('2d').setTransform(1, 0, 0, 1, 0, 0);\n return pipelineState;\n },\n\n /**\n * Detach event listeners, remove references, and clean up caches.\n */\n dispose: function () {\n if (this.canvas) {\n this.canvas = null;\n this.gl = null;\n }\n this.clearWebGLCaches();\n },\n\n /**\n * Wipe out WebGL-related caches.\n */\n clearWebGLCaches: function () {\n this.programCache = {};\n this.textureCache = {};\n },\n\n /**\n * Create a WebGL texture object.\n *\n * Accepts specific dimensions to initialize the texture to or a source image.\n *\n * @param {WebGLRenderingContext} gl The GL context to use for creating the texture.\n * @param {Number} width The width to initialize the texture at.\n * @param {Number} height The height to initialize the texture.\n * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source for the texture data.\n * @returns {WebGLTexture}\n */\n createTexture: function (gl, width, height, textureImageSource) {\n var texture = gl.createTexture();\n gl.bindTexture(gl.TEXTURE_2D, texture);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);\n if (textureImageSource) {\n gl.texImage2D(\n gl.TEXTURE_2D,\n 0,\n gl.RGBA,\n gl.RGBA,\n gl.UNSIGNED_BYTE,\n textureImageSource\n );\n } else {\n gl.texImage2D(\n gl.TEXTURE_2D,\n 0,\n gl.RGBA,\n width,\n height,\n 0,\n gl.RGBA,\n gl.UNSIGNED_BYTE,\n null\n );\n }\n return texture;\n },\n\n /**\n * Can be optionally used to get a texture from the cache array\n *\n * If an existing texture is not found, a new texture is created and cached.\n *\n * @param {String} uniqueId A cache key to use to find an existing texture.\n * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source to use to create the\n * texture cache entry if one does not already exist.\n */\n getCachedTexture: function (uniqueId, textureImageSource) {\n if (this.textureCache[uniqueId]) {\n return this.textureCache[uniqueId];\n } else {\n var texture = this.createTexture(\n this.gl,\n textureImageSource.width,\n textureImageSource.height,\n textureImageSource\n );\n this.textureCache[uniqueId] = texture;\n return texture;\n }\n },\n\n /**\n * Clear out cached resources related to a source image that has been\n * filtered previously.\n *\n * @param {String} cacheKey The cache key provided when the source image was filtered.\n */\n evictCachesForKey: function (cacheKey) {\n if (this.textureCache[cacheKey]) {\n this.gl.deleteTexture(this.textureCache[cacheKey]);\n delete this.textureCache[cacheKey];\n }\n },\n\n copyGLTo2D: copyGLTo2DDrawImage,\n\n /**\n * Attempt to extract GPU information strings from a WebGL context.\n *\n * Useful information when debugging or blacklisting specific GPUs.\n *\n * @returns {Object} A GPU info object with renderer and vendor strings.\n */\n captureGPUInfo: function () {\n if (this.gpuInfo) {\n return this.gpuInfo;\n }\n var gl = this.gl,\n gpuInfo = { renderer: '', vendor: '' };\n if (!gl) {\n return gpuInfo;\n }\n var ext = gl.getExtension('WEBGL_debug_renderer_info');\n if (ext) {\n var renderer = gl.getParameter(ext.UNMASKED_RENDERER_WEBGL);\n var vendor = gl.getParameter(ext.UNMASKED_VENDOR_WEBGL);\n if (renderer) {\n gpuInfo.renderer = renderer.toLowerCase();\n }\n if (vendor) {\n gpuInfo.vendor = vendor.toLowerCase();\n }\n }\n this.gpuInfo = gpuInfo;\n return gpuInfo;\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n\nfunction resizeCanvasIfNeeded(pipelineState) {\n var targetCanvas = pipelineState.targetCanvas,\n width = targetCanvas.width,\n height = targetCanvas.height,\n dWidth = pipelineState.destinationWidth,\n dHeight = pipelineState.destinationHeight;\n\n if (width !== dWidth || height !== dHeight) {\n targetCanvas.width = dWidth;\n targetCanvas.height = dHeight;\n }\n}\n\n/**\n * Copy an input WebGL canvas on to an output 2D canvas.\n *\n * The WebGL canvas is assumed to be upside down, with the top-left pixel of the\n * desired output image appearing in the bottom-left corner of the WebGL canvas.\n *\n * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from.\n * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to.\n * @param {Object} pipelineState The 2D target canvas to copy on to.\n */\nfunction copyGLTo2DDrawImage(gl, pipelineState) {\n var glCanvas = gl.canvas,\n targetCanvas = pipelineState.targetCanvas,\n ctx = targetCanvas.getContext('2d');\n ctx.translate(0, targetCanvas.height); // move it down again\n ctx.scale(1, -1); // vertical flip\n // where is my image on the big glcanvas?\n var sourceY = glCanvas.height - targetCanvas.height;\n ctx.drawImage(\n glCanvas,\n 0,\n sourceY,\n targetCanvas.width,\n targetCanvas.height,\n 0,\n 0,\n targetCanvas.width,\n targetCanvas.height\n );\n}\n\n/**\n * Copy an input WebGL canvas on to an output 2D canvas using 2d canvas' putImageData\n * API. Measurably faster than using ctx.drawImage in Firefox (version 54 on OSX Sierra).\n *\n * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from.\n * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to.\n * @param {Object} pipelineState The 2D target canvas to copy on to.\n */\nfunction copyGLTo2DPutImageData(gl, pipelineState) {\n var targetCanvas = pipelineState.targetCanvas,\n ctx = targetCanvas.getContext('2d'),\n dWidth = pipelineState.destinationWidth,\n dHeight = pipelineState.destinationHeight,\n numBytes = dWidth * dHeight * 4;\n\n // eslint-disable-next-line no-undef\n var u8 = new Uint8Array(this.imageBuffer, 0, numBytes);\n // eslint-disable-next-line no-undef\n var u8Clamped = new Uint8ClampedArray(this.imageBuffer, 0, numBytes);\n\n gl.readPixels(0, 0, dWidth, dHeight, gl.RGBA, gl.UNSIGNED_BYTE, u8);\n var imgData = new ImageData(u8Clamped, dWidth, dHeight);\n ctx.putImageData(imgData, 0, 0);\n}\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n noop = function () {};\n\n fabric.Canvas2dFilterBackend = Canvas2dFilterBackend;\n\n /**\n * Canvas 2D filter backend.\n */\n function Canvas2dFilterBackend() {}\n\n Canvas2dFilterBackend.prototype =\n /** @lends fabric.Canvas2dFilterBackend.prototype */ {\n evictCachesForKey: noop,\n dispose: noop,\n clearWebGLCaches: noop,\n\n /**\n * Experimental. This object is a sort of repository of help layers used to avoid\n * of recreating them during frequent filtering. If you are previewing a filter with\n * a slider you probably do not want to create help layers every filter step.\n * in this object there will be appended some canvases, created once, resized sometimes\n * cleared never. Clearing is left to the developer.\n **/\n resources: {},\n\n /**\n * Apply a set of filters against a source image and draw the filtered output\n * to the provided destination canvas.\n *\n * @param {EnhancedFilter} filters The filter to apply.\n * @param {HTMLImageElement|HTMLCanvasElement} sourceElement The source to be filtered.\n * @param {Number} sourceWidth The width of the source input.\n * @param {Number} sourceHeight The height of the source input.\n * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn.\n */\n applyFilters: function (\n filters,\n sourceElement,\n sourceWidth,\n sourceHeight,\n targetCanvas\n ) {\n var ctx = targetCanvas.getContext('2d');\n ctx.drawImage(sourceElement, 0, 0, sourceWidth, sourceHeight);\n var imageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight);\n var originalImageData = ctx.getImageData(\n 0,\n 0,\n sourceWidth,\n sourceHeight\n );\n var pipelineState = {\n sourceWidth: sourceWidth,\n sourceHeight: sourceHeight,\n imageData: imageData,\n originalEl: sourceElement,\n originalImageData: originalImageData,\n canvasEl: targetCanvas,\n ctx: ctx,\n filterBackend: this,\n };\n filters.forEach(function (filter) {\n filter.applyTo(pipelineState);\n });\n if (\n pipelineState.imageData.width !== sourceWidth ||\n pipelineState.imageData.height !== sourceHeight\n ) {\n targetCanvas.width = pipelineState.imageData.width;\n targetCanvas.height = pipelineState.imageData.height;\n }\n ctx.putImageData(pipelineState.imageData, 0, 0);\n return pipelineState;\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { TWebGLPrecision, webGLProbe } from './WebGLProbe';\n\n(function (global) {\n var fabric = global.fabric;\n /**\n * @namespace fabric.Image.filters\n * @memberOf fabric.Image\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#image_filters}\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n */\n fabric.Image.filters = fabric.Image.filters || {};\n\n /**\n * Root filter class from which all filter classes inherit from\n * @class fabric.Image.filters.BaseFilter\n * @memberOf fabric.Image.filters\n */\n fabric.Image.filters.BaseFilter = fabric.util.createClass(\n /** @lends fabric.Image.filters.BaseFilter.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'BaseFilter',\n\n /**\n * Array of attributes to send with buffers. do not modify\n * @private\n */\n\n vertexSource:\n 'attribute vec2 aPosition;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vTexCoord = aPosition;\\n' +\n 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\\n' +\n '}',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'void main() {\\n' +\n 'gl_FragColor = texture2D(uTexture, vTexCoord);\\n' +\n '}',\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n if (options) {\n this.setOptions(options);\n }\n },\n\n /**\n * Sets filter's properties from options\n * @param {Object} [options] Options object\n */\n setOptions: function (options) {\n for (var prop in options) {\n this[prop] = options[prop];\n }\n },\n\n /**\n * Compile this filter's shader program.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context to use for shader compilation.\n * @param {String} fragmentSource fragmentShader source for compilation\n * @param {String} vertexSource vertexShader source for compilation\n */\n createProgram: function (gl, fragmentSource, vertexSource) {\n fragmentSource = fragmentSource || this.fragmentSource;\n vertexSource = vertexSource || this.vertexSource;\n if (webGLProbe.webGLPrecision !== TWebGLPrecision.high) {\n fragmentSource = fragmentSource.replace(\n new RegExp(`precision ${TWebGLPrecision.high} float`, 'g'),\n `precision ${webGLProbe.webGLPrecision} float`\n );\n }\n var vertexShader = gl.createShader(gl.VERTEX_SHADER);\n gl.shaderSource(vertexShader, vertexSource);\n gl.compileShader(vertexShader);\n if (!gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS)) {\n throw new Error(\n // eslint-disable-next-line prefer-template\n 'Vertex shader compile error for ' +\n this.type +\n ': ' +\n gl.getShaderInfoLog(vertexShader)\n );\n }\n\n var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);\n gl.shaderSource(fragmentShader, fragmentSource);\n gl.compileShader(fragmentShader);\n if (!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS)) {\n throw new Error(\n // eslint-disable-next-line prefer-template\n 'Fragment shader compile error for ' +\n this.type +\n ': ' +\n gl.getShaderInfoLog(fragmentShader)\n );\n }\n\n var program = gl.createProgram();\n gl.attachShader(program, vertexShader);\n gl.attachShader(program, fragmentShader);\n gl.linkProgram(program);\n if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {\n throw new Error(\n // eslint-disable-next-line prefer-template\n 'Shader link error for \"${this.type}\" ' +\n gl.getProgramInfoLog(program)\n );\n }\n\n var attributeLocations = this.getAttributeLocations(gl, program);\n var uniformLocations = this.getUniformLocations(gl, program) || {};\n uniformLocations.uStepW = gl.getUniformLocation(program, 'uStepW');\n uniformLocations.uStepH = gl.getUniformLocation(program, 'uStepH');\n return {\n program: program,\n attributeLocations: attributeLocations,\n uniformLocations: uniformLocations,\n };\n },\n\n /**\n * Return a map of attribute names to WebGLAttributeLocation objects.\n *\n * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program.\n * @param {WebGLShaderProgram} program The shader program from which to take attribute locations.\n * @returns {Object} A map of attribute names to attribute locations.\n */\n getAttributeLocations: function (gl, program) {\n return {\n aPosition: gl.getAttribLocation(program, 'aPosition'),\n };\n },\n\n /**\n * Return a map of uniform names to WebGLUniformLocation objects.\n *\n * Intended to be overridden by subclasses.\n *\n * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program.\n * @param {WebGLShaderProgram} program The shader program from which to take uniform locations.\n * @returns {Object} A map of uniform names to uniform locations.\n */\n getUniformLocations: function (/* gl, program */) {\n // in case i do not need any special uniform i need to return an empty object\n return {};\n },\n\n /**\n * Send attribute data from this filter to its shader program on the GPU.\n *\n * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program.\n * @param {Object} attributeLocations A map of shader attribute names to their locations.\n */\n sendAttributeData: function (gl, attributeLocations, aPositionData) {\n var attributeLocation = attributeLocations.aPosition;\n var buffer = gl.createBuffer();\n gl.bindBuffer(gl.ARRAY_BUFFER, buffer);\n gl.enableVertexAttribArray(attributeLocation);\n gl.vertexAttribPointer(attributeLocation, 2, gl.FLOAT, false, 0, 0);\n gl.bufferData(gl.ARRAY_BUFFER, aPositionData, gl.STATIC_DRAW);\n },\n\n _setupFrameBuffer: function (options) {\n var gl = options.context,\n width,\n height;\n if (options.passes > 1) {\n width = options.destinationWidth;\n height = options.destinationHeight;\n if (\n options.sourceWidth !== width ||\n options.sourceHeight !== height\n ) {\n gl.deleteTexture(options.targetTexture);\n options.targetTexture = options.filterBackend.createTexture(\n gl,\n width,\n height\n );\n }\n gl.framebufferTexture2D(\n gl.FRAMEBUFFER,\n gl.COLOR_ATTACHMENT0,\n gl.TEXTURE_2D,\n options.targetTexture,\n 0\n );\n } else {\n // draw last filter on canvas and not to framebuffer.\n gl.bindFramebuffer(gl.FRAMEBUFFER, null);\n gl.finish();\n }\n },\n\n _swapTextures: function (options) {\n options.passes--;\n options.pass++;\n var temp = options.targetTexture;\n options.targetTexture = options.sourceTexture;\n options.sourceTexture = temp;\n },\n\n /**\n * Generic isNeutral implementation for one parameter based filters.\n * Used only in image applyFilters to discard filters that will not have an effect\n * on the image\n * Other filters may need their own version ( ColorMatrix, HueRotation, gamma, ComposedFilter )\n * @param {Object} options\n **/\n isNeutralState: function (/* options */) {\n var main = this.mainParameter,\n _class = fabric.Image.filters[this.type].prototype;\n if (main) {\n if (Array.isArray(_class[main])) {\n for (var i = _class[main].length; i--; ) {\n if (this[main][i] !== _class[main][i]) {\n return false;\n }\n }\n return true;\n } else {\n return _class[main] === this[main];\n }\n } else {\n return false;\n }\n },\n\n /**\n * Apply this filter to the input image data provided.\n *\n * Determines whether to use WebGL or Canvas2D based on the options.webgl flag.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be executed\n * @param {Boolean} options.webgl Whether to use webgl to render the filter.\n * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered.\n * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn.\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n applyTo: function (options) {\n if (options.webgl) {\n this._setupFrameBuffer(options);\n this.applyToWebGL(options);\n this._swapTextures(options);\n } else {\n this.applyTo2d(options);\n }\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n if (!options.programCache.hasOwnProperty(this.type)) {\n options.programCache[this.type] = this.createProgram(options.context);\n }\n return options.programCache[this.type];\n },\n\n /**\n * Apply this filter using webgl.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be executed\n * @param {Boolean} options.webgl Whether to use webgl to render the filter.\n * @param {WebGLTexture} options.originalTexture The texture of the original input image.\n * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered.\n * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn.\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n applyToWebGL: function (options) {\n var gl = options.context;\n var shader = this.retrieveShader(options);\n if (options.pass === 0 && options.originalTexture) {\n gl.bindTexture(gl.TEXTURE_2D, options.originalTexture);\n } else {\n gl.bindTexture(gl.TEXTURE_2D, options.sourceTexture);\n }\n gl.useProgram(shader.program);\n this.sendAttributeData(\n gl,\n shader.attributeLocations,\n options.aPosition\n );\n\n gl.uniform1f(shader.uniformLocations.uStepW, 1 / options.sourceWidth);\n gl.uniform1f(shader.uniformLocations.uStepH, 1 / options.sourceHeight);\n\n this.sendUniformData(gl, shader.uniformLocations);\n gl.viewport(0, 0, options.destinationWidth, options.destinationHeight);\n gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);\n },\n\n bindAdditionalTexture: function (gl, texture, textureUnit) {\n gl.activeTexture(textureUnit);\n gl.bindTexture(gl.TEXTURE_2D, texture);\n // reset active texture to 0 as usual\n gl.activeTexture(gl.TEXTURE0);\n },\n\n unbindAdditionalTexture: function (gl, textureUnit) {\n gl.activeTexture(textureUnit);\n gl.bindTexture(gl.TEXTURE_2D, null);\n gl.activeTexture(gl.TEXTURE0);\n },\n\n getMainParameter: function () {\n return this[this.mainParameter];\n },\n\n setMainParameter: function (value) {\n this[this.mainParameter] = value;\n },\n\n /**\n * Send uniform data from this filter to its shader program on the GPU.\n *\n * Intended to be overridden by subclasses.\n *\n * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program.\n * @param {Object} uniformLocations A map of shader uniform names to their locations.\n */\n sendUniformData: function (/* gl, uniformLocations */) {\n // Intentionally left blank. Override me in subclasses.\n },\n\n /**\n * If needed by a 2d filter, this functions can create an helper canvas to be used\n * remember that options.targetCanvas is available for use till end of chain.\n */\n createHelpLayer: function (options) {\n if (!options.helpLayer) {\n var helpLayer = document.createElement('canvas');\n helpLayer.width = options.sourceWidth;\n helpLayer.height = options.sourceHeight;\n options.helpLayer = helpLayer;\n }\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n var object = { type: this.type },\n mainP = this.mainParameter;\n if (mainP) {\n object[mainP] = this[mainP];\n }\n return object;\n },\n\n /**\n * Returns a JSON representation of an instance\n * @return {Object} JSON\n */\n toJSON: function () {\n // delegate, not alias\n return this.toObject();\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.BaseFilter.fromObject = function (object) {\n return Promise.resolve(new fabric.Image.filters[object.type](object));\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Color Matrix filter class\n * @class fabric.Image.filters.ColorMatrix\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.ColorMatrix#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @see {@Link http://www.webwasp.co.uk/tutorials/219/Color_Matrix_Filter.php}\n * @see {@Link http://phoboslab.org/log/2013/11/fast-image-filters-with-webgl}\n * @example Kodachrome filter\n * var filter = new fabric.Image.filters.ColorMatrix({\n * matrix: [\n 1.1285582396593525, -0.3967382283601348, -0.03992559172921793, 0, 63.72958762196502,\n -0.16404339962244616, 1.0835251566291304, -0.05498805115633132, 0, 24.732407896706203,\n -0.16786010706155763, -0.5603416277695248, 1.6014850761964943, 0, 35.62982807460946,\n 0, 0, 0, 1, 0\n ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.ColorMatrix = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.ColorMatrix.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'ColorMatrix',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'uniform mat4 uColorMatrix;\\n' +\n 'uniform vec4 uConstants;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'color *= uColorMatrix;\\n' +\n 'color += uConstants;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Colormatrix for pixels.\n * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning\n * outside the -1, 1 range.\n * 0.0039215686 is the part of 1 that get translated to 1 in 2d\n * @param {Array} matrix array of 20 numbers.\n * @default\n */\n matrix: [1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0],\n\n mainParameter: 'matrix',\n\n /**\n * Lock the colormatrix on the color part, skipping alpha, mainly for non webgl scenario\n * to save some calculation\n * @type Boolean\n * @default true\n */\n colorsOnly: true,\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n this.callSuper('initialize', options);\n // create a new array instead mutating the prototype with push\n this.matrix = this.matrix.slice(0);\n },\n\n /**\n * Apply the ColorMatrix operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n iLen = data.length,\n m = this.matrix,\n r,\n g,\n b,\n a,\n i,\n colorsOnly = this.colorsOnly;\n\n for (i = 0; i < iLen; i += 4) {\n r = data[i];\n g = data[i + 1];\n b = data[i + 2];\n if (colorsOnly) {\n data[i] = r * m[0] + g * m[1] + b * m[2] + m[4] * 255;\n data[i + 1] = r * m[5] + g * m[6] + b * m[7] + m[9] * 255;\n data[i + 2] = r * m[10] + g * m[11] + b * m[12] + m[14] * 255;\n } else {\n a = data[i + 3];\n data[i] = r * m[0] + g * m[1] + b * m[2] + a * m[3] + m[4] * 255;\n data[i + 1] =\n r * m[5] + g * m[6] + b * m[7] + a * m[8] + m[9] * 255;\n data[i + 2] =\n r * m[10] + g * m[11] + b * m[12] + a * m[13] + m[14] * 255;\n data[i + 3] =\n r * m[15] + g * m[16] + b * m[17] + a * m[18] + m[19] * 255;\n }\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uColorMatrix: gl.getUniformLocation(program, 'uColorMatrix'),\n uConstants: gl.getUniformLocation(program, 'uConstants'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var m = this.matrix,\n matrix = [\n m[0],\n m[1],\n m[2],\n m[3],\n m[5],\n m[6],\n m[7],\n m[8],\n m[10],\n m[11],\n m[12],\n m[13],\n m[15],\n m[16],\n m[17],\n m[18],\n ],\n constants = [m[4], m[9], m[14], m[19]];\n gl.uniformMatrix4fv(uniformLocations.uColorMatrix, false, matrix);\n gl.uniform4fv(uniformLocations.uConstants, constants);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.ColorMatrix.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Brightness filter class\n * @class fabric.Image.filters.Brightness\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Brightness#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Brightness({\n * brightness: 0.05\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Brightness = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Brightness.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Brightness',\n\n /**\n * Fragment source for the brightness program\n */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uBrightness;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'color.rgb += uBrightness;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Brightness value, from -1 to 1.\n * translated to -255 to 255 for 2d\n * 0.0039215686 is the part of 1 that get translated to 1 in 2d\n * @param {Number} brightness\n * @default\n */\n brightness: 0,\n\n /**\n * Describe the property that is the filter parameter\n * @param {String} m\n * @default\n */\n mainParameter: 'brightness',\n\n /**\n * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n if (this.brightness === 0) {\n return;\n }\n var imageData = options.imageData,\n data = imageData.data,\n i,\n len = data.length,\n brightness = Math.round(this.brightness * 255);\n for (i = 0; i < len; i += 4) {\n data[i] = data[i] + brightness;\n data[i + 1] = data[i + 1] + brightness;\n data[i + 2] = data[i + 2] + brightness;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uBrightness: gl.getUniformLocation(program, 'uBrightness'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uBrightness, this.brightness);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Brightness.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Adapted from html5rocks article\n * @class fabric.Image.filters.Convolute\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Convolute#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example Sharpen filter\n * var filter = new fabric.Image.filters.Convolute({\n * matrix: [ 0, -1, 0,\n * -1, 5, -1,\n * 0, -1, 0 ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n * @example Blur filter\n * var filter = new fabric.Image.filters.Convolute({\n * matrix: [ 1/9, 1/9, 1/9,\n * 1/9, 1/9, 1/9,\n * 1/9, 1/9, 1/9 ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n * @example Emboss filter\n * var filter = new fabric.Image.filters.Convolute({\n * matrix: [ 1, 1, 1,\n * 1, 0.7, -1,\n * -1, -1, -1 ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n * @example Emboss filter with opaqueness\n * var filter = new fabric.Image.filters.Convolute({\n * opaque: true,\n * matrix: [ 1, 1, 1,\n * 1, 0.7, -1,\n * -1, -1, -1 ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n filters.Convolute = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Convolute.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Convolute',\n\n /*\n * Opaque value (true/false)\n */\n opaque: false,\n\n /*\n * matrix for the filter, max 9x9\n */\n matrix: [0, 0, 0, 0, 1, 0, 0, 0, 0],\n\n /**\n * Fragment source for the brightness program\n */\n fragmentSource: {\n Convolute_3_1:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[9];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 0);\\n' +\n 'for (float h = 0.0; h < 3.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 3.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 1), uStepH * (h - 1));\\n' +\n 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 3.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n Convolute_3_0:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[9];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 1);\\n' +\n 'for (float h = 0.0; h < 3.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 3.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 1.0), uStepH * (h - 1.0));\\n' +\n 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 3.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'float alpha = texture2D(uTexture, vTexCoord).a;\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.a = alpha;\\n' +\n '}',\n Convolute_5_1:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[25];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 0);\\n' +\n 'for (float h = 0.0; h < 5.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 5.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\\n' +\n 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 5.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n Convolute_5_0:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[25];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 1);\\n' +\n 'for (float h = 0.0; h < 5.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 5.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\\n' +\n 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 5.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'float alpha = texture2D(uTexture, vTexCoord).a;\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.a = alpha;\\n' +\n '}',\n Convolute_7_1:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[49];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 0);\\n' +\n 'for (float h = 0.0; h < 7.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 7.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\\n' +\n 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 7.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n Convolute_7_0:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[49];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 1);\\n' +\n 'for (float h = 0.0; h < 7.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 7.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\\n' +\n 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 7.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'float alpha = texture2D(uTexture, vTexCoord).a;\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.a = alpha;\\n' +\n '}',\n Convolute_9_1:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[81];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 0);\\n' +\n 'for (float h = 0.0; h < 9.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 9.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\\n' +\n 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 9.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n Convolute_9_0:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[81];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 1);\\n' +\n 'for (float h = 0.0; h < 9.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 9.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\\n' +\n 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 9.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'float alpha = texture2D(uTexture, vTexCoord).a;\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.a = alpha;\\n' +\n '}',\n },\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.Convolute.prototype\n * @param {Object} [options] Options object\n * @param {Boolean} [options.opaque=false] Opaque value (true/false)\n * @param {Array} [options.matrix] Filter matrix\n */\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var size = Math.sqrt(this.matrix.length);\n var cacheKey = this.type + '_' + size + '_' + (this.opaque ? 1 : 0);\n var shaderSource = this.fragmentSource[cacheKey];\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n shaderSource\n );\n }\n return options.programCache[cacheKey];\n },\n\n /**\n * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n weights = this.matrix,\n side = Math.round(Math.sqrt(weights.length)),\n halfSide = Math.floor(side / 2),\n sw = imageData.width,\n sh = imageData.height,\n output = options.ctx.createImageData(sw, sh),\n dst = output.data,\n // go through the destination image pixels\n alphaFac = this.opaque ? 1 : 0,\n r,\n g,\n b,\n a,\n dstOff,\n scx,\n scy,\n srcOff,\n wt,\n x,\n y,\n cx,\n cy;\n\n for (y = 0; y < sh; y++) {\n for (x = 0; x < sw; x++) {\n dstOff = (y * sw + x) * 4;\n // calculate the weighed sum of the source image pixels that\n // fall under the convolution matrix\n r = 0;\n g = 0;\n b = 0;\n a = 0;\n\n for (cy = 0; cy < side; cy++) {\n for (cx = 0; cx < side; cx++) {\n scy = y + cy - halfSide;\n scx = x + cx - halfSide;\n\n // eslint-disable-next-line max-depth\n if (scy < 0 || scy >= sh || scx < 0 || scx >= sw) {\n continue;\n }\n\n srcOff = (scy * sw + scx) * 4;\n wt = weights[cy * side + cx];\n\n r += data[srcOff] * wt;\n g += data[srcOff + 1] * wt;\n b += data[srcOff + 2] * wt;\n // eslint-disable-next-line max-depth\n if (!alphaFac) {\n a += data[srcOff + 3] * wt;\n }\n }\n }\n dst[dstOff] = r;\n dst[dstOff + 1] = g;\n dst[dstOff + 2] = b;\n if (!alphaFac) {\n dst[dstOff + 3] = a;\n } else {\n dst[dstOff + 3] = data[dstOff + 3];\n }\n }\n }\n options.imageData = output;\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uMatrix: gl.getUniformLocation(program, 'uMatrix'),\n uOpaque: gl.getUniformLocation(program, 'uOpaque'),\n uHalfSize: gl.getUniformLocation(program, 'uHalfSize'),\n uSize: gl.getUniformLocation(program, 'uSize'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1fv(uniformLocations.uMatrix, this.matrix);\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return extend(this.callSuper('toObject'), {\n opaque: this.opaque,\n matrix: this.matrix,\n });\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Convolute.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Grayscale image filter class\n * @class fabric.Image.filters.Grayscale\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Grayscale();\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Grayscale = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Grayscale.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Grayscale',\n\n fragmentSource: {\n average:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'float average = (color.r + color.b + color.g) / 3.0;\\n' +\n 'gl_FragColor = vec4(average, average, average, color.a);\\n' +\n '}',\n lightness:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform int uMode;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 col = texture2D(uTexture, vTexCoord);\\n' +\n 'float average = (max(max(col.r, col.g),col.b) + min(min(col.r, col.g),col.b)) / 2.0;\\n' +\n 'gl_FragColor = vec4(average, average, average, col.a);\\n' +\n '}',\n luminosity:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform int uMode;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 col = texture2D(uTexture, vTexCoord);\\n' +\n 'float average = 0.21 * col.r + 0.72 * col.g + 0.07 * col.b;\\n' +\n 'gl_FragColor = vec4(average, average, average, col.a);\\n' +\n '}',\n },\n\n /**\n * Grayscale mode, between 'average', 'lightness', 'luminosity'\n * @param {String} type\n * @default\n */\n mode: 'average',\n\n mainParameter: 'mode',\n\n /**\n * Apply the Grayscale operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n i,\n len = data.length,\n value,\n mode = this.mode;\n for (i = 0; i < len; i += 4) {\n if (mode === 'average') {\n value = (data[i] + data[i + 1] + data[i + 2]) / 3;\n } else if (mode === 'lightness') {\n value =\n (Math.min(data[i], data[i + 1], data[i + 2]) +\n Math.max(data[i], data[i + 1], data[i + 2])) /\n 2;\n } else if (mode === 'luminosity') {\n value = 0.21 * data[i] + 0.72 * data[i + 1] + 0.07 * data[i + 2];\n }\n data[i] = value;\n data[i + 1] = value;\n data[i + 2] = value;\n }\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var cacheKey = this.type + '_' + this.mode;\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n var shaderSource = this.fragmentSource[this.mode];\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n shaderSource\n );\n }\n return options.programCache[cacheKey];\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uMode: gl.getUniformLocation(program, 'uMode'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n // default average mode.\n var mode = 1;\n gl.uniform1i(uniformLocations.uMode, mode);\n },\n\n /**\n * Grayscale filter isNeutralState implementation\n * The filter is never neutral\n * on the image\n **/\n isNeutralState: function () {\n return false;\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Grayscale.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Invert filter class\n * @class fabric.Image.filters.Invert\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Invert();\n * object.filters.push(filter);\n * object.applyFilters(canvas.renderAll.bind(canvas));\n */\n filters.Invert = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Invert.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Invert',\n\n /**\n * Invert also alpha.\n * @param {Boolean} alpha\n * @default\n **/\n alpha: false,\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform int uInvert;\\n' +\n 'uniform int uAlpha;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'if (uInvert == 1) {\\n' +\n 'if (uAlpha == 1) {\\n' +\n 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,1.0 -color.a);\\n' +\n '} else {\\n' +\n 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,color.a);\\n' +\n '}\\n' +\n '} else {\\n' +\n 'gl_FragColor = color;\\n' +\n '}\\n' +\n '}',\n\n /**\n * Filter invert. if false, does nothing\n * @param {Boolean} invert\n * @default\n */\n invert: true,\n\n mainParameter: 'invert',\n\n /**\n * Apply the Invert operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n i,\n len = data.length;\n for (i = 0; i < len; i += 4) {\n data[i] = 255 - data[i];\n data[i + 1] = 255 - data[i + 1];\n data[i + 2] = 255 - data[i + 2];\n\n if (this.alpha) {\n data[i + 3] = 255 - data[i + 3];\n }\n }\n },\n\n /**\n * Invert filter isNeutralState implementation\n * Used only in image applyFilters to discard filters that will not have an effect\n * on the image\n * @param {Object} options\n **/\n isNeutralState: function () {\n return !this.invert;\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uInvert: gl.getUniformLocation(program, 'uInvert'),\n uAlpha: gl.getUniformLocation(program, 'uAlpha'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1i(uniformLocations.uInvert, this.invert);\n gl.uniform1i(uniformLocations.uAlpha, this.alpha);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Invert.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Noise filter class\n * @class fabric.Image.filters.Noise\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Noise#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Noise({\n * noise: 700\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n filters.Noise = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Noise.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Noise',\n\n /**\n * Fragment source for the noise program\n */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uStepH;\\n' +\n 'uniform float uNoise;\\n' +\n 'uniform float uSeed;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'float rand(vec2 co, float seed, float vScale) {\\n' +\n 'return fract(sin(dot(co.xy * vScale ,vec2(12.9898 , 78.233))) * 43758.5453 * (seed + 0.01) / 2.0);\\n' +\n '}\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'color.rgb += (0.5 - rand(vTexCoord, uSeed, 0.1 / uStepH)) * uNoise;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Describe the property that is the filter parameter\n * @param {String} m\n * @default\n */\n mainParameter: 'noise',\n\n /**\n * Noise value, from\n * @param {Number} noise\n * @default\n */\n noise: 0,\n\n /**\n * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n if (this.noise === 0) {\n return;\n }\n var imageData = options.imageData,\n data = imageData.data,\n i,\n len = data.length,\n noise = this.noise,\n rand;\n\n for (i = 0, len = data.length; i < len; i += 4) {\n rand = (0.5 - Math.random()) * noise;\n\n data[i] += rand;\n data[i + 1] += rand;\n data[i + 2] += rand;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uNoise: gl.getUniformLocation(program, 'uNoise'),\n uSeed: gl.getUniformLocation(program, 'uSeed'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uNoise, this.noise / 255);\n gl.uniform1f(uniformLocations.uSeed, Math.random());\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return extend(this.callSuper('toObject'), {\n noise: this.noise,\n });\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Noise.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Pixelate filter class\n * @class fabric.Image.filters.Pixelate\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Pixelate#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Pixelate({\n * blocksize: 8\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Pixelate = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Pixelate.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Pixelate',\n\n blocksize: 4,\n\n mainParameter: 'blocksize',\n\n /**\n * Fragment source for the Pixelate program\n */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uBlocksize;\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'float blockW = uBlocksize * uStepW;\\n' +\n 'float blockH = uBlocksize * uStepW;\\n' +\n 'int posX = int(vTexCoord.x / blockW);\\n' +\n 'int posY = int(vTexCoord.y / blockH);\\n' +\n 'float fposX = float(posX);\\n' +\n 'float fposY = float(posY);\\n' +\n 'vec2 squareCoords = vec2(fposX * blockW, fposY * blockH);\\n' +\n 'vec4 color = texture2D(uTexture, squareCoords);\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Apply the Pixelate operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n iLen = imageData.height,\n jLen = imageData.width,\n index,\n i,\n j,\n r,\n g,\n b,\n a,\n _i,\n _j,\n _iLen,\n _jLen;\n\n for (i = 0; i < iLen; i += this.blocksize) {\n for (j = 0; j < jLen; j += this.blocksize) {\n index = i * 4 * jLen + j * 4;\n\n r = data[index];\n g = data[index + 1];\n b = data[index + 2];\n a = data[index + 3];\n\n _iLen = Math.min(i + this.blocksize, iLen);\n _jLen = Math.min(j + this.blocksize, jLen);\n for (_i = i; _i < _iLen; _i++) {\n for (_j = j; _j < _jLen; _j++) {\n index = _i * 4 * jLen + _j * 4;\n data[index] = r;\n data[index + 1] = g;\n data[index + 2] = b;\n data[index + 3] = a;\n }\n }\n }\n }\n },\n\n /**\n * Indicate when the filter is not gonna apply changes to the image\n **/\n isNeutralState: function () {\n return this.blocksize === 1;\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uBlocksize: gl.getUniformLocation(program, 'uBlocksize'),\n uStepW: gl.getUniformLocation(program, 'uStepW'),\n uStepH: gl.getUniformLocation(program, 'uStepH'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uBlocksize, this.blocksize);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Pixelate.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Color } from '../color';\n\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Remove white filter class\n * @class fabric.Image.filters.RemoveColor\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.RemoveColor#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.RemoveColor({\n * threshold: 0.2,\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n filters.RemoveColor = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.RemoveColor.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'RemoveColor',\n\n /**\n * Color to remove, in any format understood by fabric.Color.\n * @param {String} type\n * @default\n */\n color: '#FFFFFF',\n\n /**\n * Fragment source for the brightness program\n */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec4 uLow;\\n' +\n 'uniform vec4 uHigh;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'gl_FragColor = texture2D(uTexture, vTexCoord);\\n' +\n 'if(all(greaterThan(gl_FragColor.rgb,uLow.rgb)) && all(greaterThan(uHigh.rgb,gl_FragColor.rgb))) {\\n' +\n 'gl_FragColor.a = 0.0;\\n' +\n '}\\n' +\n '}',\n\n /**\n * distance to actual color, as value up or down from each r,g,b\n * between 0 and 1\n **/\n distance: 0.02,\n\n /**\n * For color to remove inside distance, use alpha channel for a smoother deletion\n * NOT IMPLEMENTED YET\n **/\n useAlpha: false,\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.RemoveWhite.prototype\n * @param {Object} [options] Options object\n * @param {Number} [options.color=#RRGGBB] Threshold value\n * @param {Number} [options.distance=10] Distance value\n */\n\n /**\n * Applies filter to canvas element\n * @param {Object} canvasEl Canvas element to apply filter to\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n i,\n distance = this.distance * 255,\n r,\n g,\n b,\n source = new Color(this.color).getSource(),\n lowC = [\n source[0] - distance,\n source[1] - distance,\n source[2] - distance,\n ],\n highC = [\n source[0] + distance,\n source[1] + distance,\n source[2] + distance,\n ];\n\n for (i = 0; i < data.length; i += 4) {\n r = data[i];\n g = data[i + 1];\n b = data[i + 2];\n\n if (\n r > lowC[0] &&\n g > lowC[1] &&\n b > lowC[2] &&\n r < highC[0] &&\n g < highC[1] &&\n b < highC[2]\n ) {\n data[i + 3] = 0;\n }\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uLow: gl.getUniformLocation(program, 'uLow'),\n uHigh: gl.getUniformLocation(program, 'uHigh'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var source = new Color(this.color).getSource(),\n distance = parseFloat(this.distance),\n lowC = [\n 0 + source[0] / 255 - distance,\n 0 + source[1] / 255 - distance,\n 0 + source[2] / 255 - distance,\n 1,\n ],\n highC = [\n source[0] / 255 + distance,\n source[1] / 255 + distance,\n source[2] / 255 + distance,\n 1,\n ];\n gl.uniform4fv(uniformLocations.uLow, lowC);\n gl.uniform4fv(uniformLocations.uHigh, highC);\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return extend(this.callSuper('toObject'), {\n color: this.color,\n distance: this.distance,\n });\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.RemoveColor.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n var matrices = {\n Brownie: [\n 0.5997, 0.34553, -0.27082, 0, 0.186, -0.0377, 0.86095, 0.15059, 0,\n -0.1449, 0.24113, -0.07441, 0.44972, 0, -0.02965, 0, 0, 0, 1, 0,\n ],\n Vintage: [\n 0.62793, 0.32021, -0.03965, 0, 0.03784, 0.02578, 0.64411, 0.03259, 0,\n 0.02926, 0.0466, -0.08512, 0.52416, 0, 0.02023, 0, 0, 0, 1, 0,\n ],\n Kodachrome: [\n 1.12855, -0.39673, -0.03992, 0, 0.24991, -0.16404, 1.08352, -0.05498, 0,\n 0.09698, -0.16786, -0.56034, 1.60148, 0, 0.13972, 0, 0, 0, 1, 0,\n ],\n Technicolor: [\n 1.91252, -0.85453, -0.09155, 0, 0.04624, -0.30878, 1.76589, -0.10601, 0,\n -0.27589, -0.2311, -0.75018, 1.84759, 0, 0.12137, 0, 0, 0, 1, 0,\n ],\n Polaroid: [\n 1.438, -0.062, -0.062, 0, 0, -0.122, 1.378, -0.122, 0, 0, -0.016, -0.016,\n 1.483, 0, 0, 0, 0, 0, 1, 0,\n ],\n Sepia: [\n 0.393, 0.769, 0.189, 0, 0, 0.349, 0.686, 0.168, 0, 0, 0.272, 0.534, 0.131,\n 0, 0, 0, 0, 0, 1, 0,\n ],\n BlackWhite: [\n 1.5, 1.5, 1.5, 0, -1, 1.5, 1.5, 1.5, 0, -1, 1.5, 1.5, 1.5, 0, -1, 0, 0, 0,\n 1, 0,\n ],\n };\n\n for (var key in matrices) {\n filters[key] = createClass(\n filters.ColorMatrix,\n /** @lends fabric.Image.filters.Sepia.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: key,\n\n /**\n * Colormatrix for the effect\n * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning\n * outside the -1, 1 range.\n * @param {Array} matrix array of 20 numbers.\n * @default\n */\n matrix: matrices[key],\n\n /**\n * Lock the matrix export for this kind of static, parameter less filters.\n */\n mainParameter: false,\n /**\n * Lock the colormatrix on the color part, skipping alpha\n */\n colorsOnly: true,\n }\n );\n fabric.Image.filters[key].fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Color } from '../color';\n\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Color Blend filter class\n * @class fabric.Image.filter.BlendColor\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @example\n * var filter = new fabric.Image.filters.BlendColor({\n * color: '#000',\n * mode: 'multiply'\n * });\n *\n * var filter = new fabric.Image.filters.BlendImage({\n * image: fabricImageObject,\n * mode: 'multiply',\n * alpha: 0.5\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n\n filters.BlendColor = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Blend.prototype */ {\n type: 'BlendColor',\n\n /**\n * Color to make the blend operation with. default to a reddish color since black or white\n * gives always strong result.\n * @type String\n * @default\n **/\n color: '#F95C63',\n\n /**\n * Blend mode for the filter: one of multiply, add, diff, screen, subtract,\n * darken, lighten, overlay, exclusion, tint.\n * @type String\n * @default\n **/\n mode: 'multiply',\n\n /**\n * alpha value. represent the strength of the blend color operation.\n * @type Number\n * @default\n **/\n alpha: 1,\n\n /**\n * Fragment source for the Multiply program\n */\n fragmentSource: {\n multiply: 'gl_FragColor.rgb *= uColor.rgb;\\n',\n screen:\n 'gl_FragColor.rgb = 1.0 - (1.0 - gl_FragColor.rgb) * (1.0 - uColor.rgb);\\n',\n add: 'gl_FragColor.rgb += uColor.rgb;\\n',\n diff: 'gl_FragColor.rgb = abs(gl_FragColor.rgb - uColor.rgb);\\n',\n subtract: 'gl_FragColor.rgb -= uColor.rgb;\\n',\n lighten: 'gl_FragColor.rgb = max(gl_FragColor.rgb, uColor.rgb);\\n',\n darken: 'gl_FragColor.rgb = min(gl_FragColor.rgb, uColor.rgb);\\n',\n exclusion:\n 'gl_FragColor.rgb += uColor.rgb - 2.0 * (uColor.rgb * gl_FragColor.rgb);\\n',\n overlay:\n 'if (uColor.r < 0.5) {\\n' +\n 'gl_FragColor.r *= 2.0 * uColor.r;\\n' +\n '} else {\\n' +\n 'gl_FragColor.r = 1.0 - 2.0 * (1.0 - gl_FragColor.r) * (1.0 - uColor.r);\\n' +\n '}\\n' +\n 'if (uColor.g < 0.5) {\\n' +\n 'gl_FragColor.g *= 2.0 * uColor.g;\\n' +\n '} else {\\n' +\n 'gl_FragColor.g = 1.0 - 2.0 * (1.0 - gl_FragColor.g) * (1.0 - uColor.g);\\n' +\n '}\\n' +\n 'if (uColor.b < 0.5) {\\n' +\n 'gl_FragColor.b *= 2.0 * uColor.b;\\n' +\n '} else {\\n' +\n 'gl_FragColor.b = 1.0 - 2.0 * (1.0 - gl_FragColor.b) * (1.0 - uColor.b);\\n' +\n '}\\n',\n tint:\n 'gl_FragColor.rgb *= (1.0 - uColor.a);\\n' +\n 'gl_FragColor.rgb += uColor.rgb;\\n',\n },\n\n /**\n * build the fragment source for the filters, joining the common part with\n * the specific one.\n * @param {String} mode the mode of the filter, a key of this.fragmentSource\n * @return {String} the source to be compiled\n * @private\n */\n buildSource: function (mode) {\n return (\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec4 uColor;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'gl_FragColor = color;\\n' +\n 'if (color.a > 0.0) {\\n' +\n this.fragmentSource[mode] +\n '}\\n' +\n '}'\n );\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var cacheKey = this.type + '_' + this.mode,\n shaderSource;\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n shaderSource = this.buildSource(this.mode);\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n shaderSource\n );\n }\n return options.programCache[cacheKey];\n },\n\n /**\n * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n iLen = data.length,\n tr,\n tg,\n tb,\n r,\n g,\n b,\n source,\n alpha1 = 1 - this.alpha;\n\n source = new Color(this.color).getSource();\n tr = source[0] * this.alpha;\n tg = source[1] * this.alpha;\n tb = source[2] * this.alpha;\n\n for (var i = 0; i < iLen; i += 4) {\n r = data[i];\n g = data[i + 1];\n b = data[i + 2];\n\n switch (this.mode) {\n case 'multiply':\n data[i] = (r * tr) / 255;\n data[i + 1] = (g * tg) / 255;\n data[i + 2] = (b * tb) / 255;\n break;\n case 'screen':\n data[i] = 255 - ((255 - r) * (255 - tr)) / 255;\n data[i + 1] = 255 - ((255 - g) * (255 - tg)) / 255;\n data[i + 2] = 255 - ((255 - b) * (255 - tb)) / 255;\n break;\n case 'add':\n data[i] = r + tr;\n data[i + 1] = g + tg;\n data[i + 2] = b + tb;\n break;\n case 'diff':\n case 'difference':\n data[i] = Math.abs(r - tr);\n data[i + 1] = Math.abs(g - tg);\n data[i + 2] = Math.abs(b - tb);\n break;\n case 'subtract':\n data[i] = r - tr;\n data[i + 1] = g - tg;\n data[i + 2] = b - tb;\n break;\n case 'darken':\n data[i] = Math.min(r, tr);\n data[i + 1] = Math.min(g, tg);\n data[i + 2] = Math.min(b, tb);\n break;\n case 'lighten':\n data[i] = Math.max(r, tr);\n data[i + 1] = Math.max(g, tg);\n data[i + 2] = Math.max(b, tb);\n break;\n case 'overlay':\n data[i] =\n tr < 128\n ? (2 * r * tr) / 255\n : 255 - (2 * (255 - r) * (255 - tr)) / 255;\n data[i + 1] =\n tg < 128\n ? (2 * g * tg) / 255\n : 255 - (2 * (255 - g) * (255 - tg)) / 255;\n data[i + 2] =\n tb < 128\n ? (2 * b * tb) / 255\n : 255 - (2 * (255 - b) * (255 - tb)) / 255;\n break;\n case 'exclusion':\n data[i] = tr + r - (2 * tr * r) / 255;\n data[i + 1] = tg + g - (2 * tg * g) / 255;\n data[i + 2] = tb + b - (2 * tb * b) / 255;\n break;\n case 'tint':\n data[i] = tr + r * alpha1;\n data[i + 1] = tg + g * alpha1;\n data[i + 2] = tb + b * alpha1;\n }\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uColor: gl.getUniformLocation(program, 'uColor'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var source = new Color(this.color).getSource();\n source[0] = (this.alpha * source[0]) / 255;\n source[1] = (this.alpha * source[1]) / 255;\n source[2] = (this.alpha * source[2]) / 255;\n source[3] = this.alpha;\n gl.uniform4fv(uniformLocations.uColor, source);\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return {\n type: this.type,\n color: this.color,\n mode: this.mode,\n alpha: this.alpha,\n };\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.BlendColor.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Image Blend filter class\n * @class fabric.Image.filter.BlendImage\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @example\n * var filter = new fabric.Image.filters.BlendColor({\n * color: '#000',\n * mode: 'multiply'\n * });\n *\n * var filter = new fabric.Image.filters.BlendImage({\n * image: fabricImageObject,\n * mode: 'multiply',\n * alpha: 0.5\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n\n filters.BlendImage = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.BlendImage.prototype */ {\n type: 'BlendImage',\n\n /**\n * Color to make the blend operation with. default to a reddish color since black or white\n * gives always strong result.\n **/\n image: null,\n\n /**\n * Blend mode for the filter (one of \"multiply\", \"mask\")\n * @type String\n * @default\n **/\n mode: 'multiply',\n\n /**\n * alpha value. represent the strength of the blend image operation.\n * not implemented.\n **/\n alpha: 1,\n\n vertexSource:\n 'attribute vec2 aPosition;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'varying vec2 vTexCoord2;\\n' +\n 'uniform mat3 uTransformMatrix;\\n' +\n 'void main() {\\n' +\n 'vTexCoord = aPosition;\\n' +\n 'vTexCoord2 = (uTransformMatrix * vec3(aPosition, 1.0)).xy;\\n' +\n 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\\n' +\n '}',\n\n /**\n * Fragment source for the Multiply program\n */\n fragmentSource: {\n multiply:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform sampler2D uImage;\\n' +\n 'uniform vec4 uColor;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'varying vec2 vTexCoord2;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'vec4 color2 = texture2D(uImage, vTexCoord2);\\n' +\n 'color.rgba *= color2.rgba;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n mask:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform sampler2D uImage;\\n' +\n 'uniform vec4 uColor;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'varying vec2 vTexCoord2;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'vec4 color2 = texture2D(uImage, vTexCoord2);\\n' +\n 'color.a = color2.a;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var cacheKey = this.type + '_' + this.mode;\n var shaderSource = this.fragmentSource[this.mode];\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n shaderSource\n );\n }\n return options.programCache[cacheKey];\n },\n\n applyToWebGL: function (options) {\n // load texture to blend.\n var gl = options.context,\n texture = this.createTexture(options.filterBackend, this.image);\n this.bindAdditionalTexture(gl, texture, gl.TEXTURE1);\n this.callSuper('applyToWebGL', options);\n this.unbindAdditionalTexture(gl, gl.TEXTURE1);\n },\n\n createTexture: function (backend, image) {\n return backend.getCachedTexture(image.cacheKey, image._element);\n },\n\n /**\n * Calculate a transformMatrix to adapt the image to blend over\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n calculateMatrix: function () {\n var image = this.image,\n width = image._element.width,\n height = image._element.height;\n return [\n 1 / image.scaleX,\n 0,\n 0,\n 0,\n 1 / image.scaleY,\n 0,\n -image.left / width,\n -image.top / height,\n 1,\n ];\n },\n\n /**\n * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n resources = options.filterBackend.resources,\n data = imageData.data,\n iLen = data.length,\n width = imageData.width,\n height = imageData.height,\n tr,\n tg,\n tb,\n ta,\n r,\n g,\n b,\n a,\n canvas1,\n context,\n image = this.image,\n blendData;\n\n if (!resources.blendImage) {\n resources.blendImage = fabric.util.createCanvasElement();\n }\n canvas1 = resources.blendImage;\n context = canvas1.getContext('2d');\n if (canvas1.width !== width || canvas1.height !== height) {\n canvas1.width = width;\n canvas1.height = height;\n } else {\n context.clearRect(0, 0, width, height);\n }\n context.setTransform(\n image.scaleX,\n 0,\n 0,\n image.scaleY,\n image.left,\n image.top\n );\n context.drawImage(image._element, 0, 0, width, height);\n blendData = context.getImageData(0, 0, width, height).data;\n for (var i = 0; i < iLen; i += 4) {\n r = data[i];\n g = data[i + 1];\n b = data[i + 2];\n a = data[i + 3];\n\n tr = blendData[i];\n tg = blendData[i + 1];\n tb = blendData[i + 2];\n ta = blendData[i + 3];\n\n switch (this.mode) {\n case 'multiply':\n data[i] = (r * tr) / 255;\n data[i + 1] = (g * tg) / 255;\n data[i + 2] = (b * tb) / 255;\n data[i + 3] = (a * ta) / 255;\n break;\n case 'mask':\n data[i + 3] = ta;\n break;\n }\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uTransformMatrix: gl.getUniformLocation(program, 'uTransformMatrix'),\n uImage: gl.getUniformLocation(program, 'uImage'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var matrix = this.calculateMatrix();\n gl.uniform1i(uniformLocations.uImage, 1); // texture unit 1.\n gl.uniformMatrix3fv(uniformLocations.uTransformMatrix, false, matrix);\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return {\n type: this.type,\n image: this.image && this.image.toObject(),\n mode: this.mode,\n alpha: this.alpha,\n };\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {object} object Object to create an instance from\n * @param {object} [options]\n * @param {AbortSignal} [options.signal] handle aborting image loading, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Image.filters.BlendImage.fromObject = function (object, options) {\n return fabric.Image.fromObject(object.image, options).then(function (\n image\n ) {\n return new fabric.Image.filters.BlendImage(\n Object.assign({}, object, { image: image })\n );\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n pow = Math.pow,\n floor = Math.floor,\n sqrt = Math.sqrt,\n abs = Math.abs,\n round = Math.round,\n sin = Math.sin,\n ceil = Math.ceil,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Resize image filter class\n * @class fabric.Image.filters.Resize\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Resize();\n * object.filters.push(filter);\n * object.applyFilters(canvas.renderAll.bind(canvas));\n */\n filters.Resize = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Resize.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Resize',\n\n /**\n * Resize type\n * for webgl resizeType is just lanczos, for canvas2d can be:\n * bilinear, hermite, sliceHack, lanczos.\n * @param {String} resizeType\n * @default\n */\n resizeType: 'hermite',\n\n /**\n * Scale factor for resizing, x axis\n * @param {Number} scaleX\n * @default\n */\n scaleX: 1,\n\n /**\n * Scale factor for resizing, y axis\n * @param {Number} scaleY\n * @default\n */\n scaleY: 1,\n\n /**\n * LanczosLobes parameter for lanczos filter, valid for resizeType lanczos\n * @param {Number} lanczosLobes\n * @default\n */\n lanczosLobes: 3,\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uDelta: gl.getUniformLocation(program, 'uDelta'),\n uTaps: gl.getUniformLocation(program, 'uTaps'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform2fv(\n uniformLocations.uDelta,\n this.horizontal ? [1 / this.width, 0] : [0, 1 / this.height]\n );\n gl.uniform1fv(uniformLocations.uTaps, this.taps);\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var filterWindow = this.getFilterWindow(),\n cacheKey = this.type + '_' + filterWindow;\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n var fragmentShader = this.generateShader(filterWindow);\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n fragmentShader\n );\n }\n return options.programCache[cacheKey];\n },\n\n getFilterWindow: function () {\n var scale = this.tempScale;\n return Math.ceil(this.lanczosLobes / scale);\n },\n\n getTaps: function () {\n var lobeFunction = this.lanczosCreate(this.lanczosLobes),\n scale = this.tempScale,\n filterWindow = this.getFilterWindow(),\n taps = new Array(filterWindow);\n for (var i = 1; i <= filterWindow; i++) {\n taps[i - 1] = lobeFunction(i * scale);\n }\n return taps;\n },\n\n /**\n * Generate vertex and shader sources from the necessary steps numbers\n * @param {Number} filterWindow\n */\n generateShader: function (filterWindow) {\n var offsets = new Array(filterWindow),\n fragmentShader = this.fragmentSourceTOP,\n filterWindow;\n\n for (var i = 1; i <= filterWindow; i++) {\n offsets[i - 1] = i + '.0 * uDelta';\n }\n\n fragmentShader += 'uniform float uTaps[' + filterWindow + '];\\n';\n fragmentShader += 'void main() {\\n';\n fragmentShader += ' vec4 color = texture2D(uTexture, vTexCoord);\\n';\n fragmentShader += ' float sum = 1.0;\\n';\n\n offsets.forEach(function (offset, i) {\n fragmentShader +=\n ' color += texture2D(uTexture, vTexCoord + ' +\n offset +\n ') * uTaps[' +\n i +\n '];\\n';\n fragmentShader +=\n ' color += texture2D(uTexture, vTexCoord - ' +\n offset +\n ') * uTaps[' +\n i +\n '];\\n';\n fragmentShader += ' sum += 2.0 * uTaps[' + i + '];\\n';\n });\n fragmentShader += ' gl_FragColor = color / sum;\\n';\n fragmentShader += '}';\n return fragmentShader;\n },\n\n fragmentSourceTOP:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec2 uDelta;\\n' +\n 'varying vec2 vTexCoord;\\n',\n\n /**\n * Apply the resize filter to the image\n * Determines whether to use WebGL or Canvas2D based on the options.webgl flag.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be executed\n * @param {Boolean} options.webgl Whether to use webgl to render the filter.\n * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered.\n * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn.\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n applyTo: function (options) {\n if (options.webgl) {\n options.passes++;\n this.width = options.sourceWidth;\n this.horizontal = true;\n this.dW = Math.round(this.width * this.scaleX);\n this.dH = options.sourceHeight;\n this.tempScale = this.dW / this.width;\n this.taps = this.getTaps();\n options.destinationWidth = this.dW;\n this._setupFrameBuffer(options);\n this.applyToWebGL(options);\n this._swapTextures(options);\n options.sourceWidth = options.destinationWidth;\n\n this.height = options.sourceHeight;\n this.horizontal = false;\n this.dH = Math.round(this.height * this.scaleY);\n this.tempScale = this.dH / this.height;\n this.taps = this.getTaps();\n options.destinationHeight = this.dH;\n this._setupFrameBuffer(options);\n this.applyToWebGL(options);\n this._swapTextures(options);\n options.sourceHeight = options.destinationHeight;\n } else {\n this.applyTo2d(options);\n }\n },\n\n isNeutralState: function () {\n return this.scaleX === 1 && this.scaleY === 1;\n },\n\n lanczosCreate: function (lobes) {\n return function (x) {\n if (x >= lobes || x <= -lobes) {\n return 0.0;\n }\n if (x < 1.1920929e-7 && x > -1.1920929e-7) {\n return 1.0;\n }\n x *= Math.PI;\n var xx = x / lobes;\n return ((sin(x) / x) * sin(xx)) / xx;\n };\n },\n\n /**\n * Applies filter to canvas element\n * @memberOf fabric.Image.filters.Resize.prototype\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} scaleX\n * @param {Number} scaleY\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n scaleX = this.scaleX,\n scaleY = this.scaleY;\n\n this.rcpScaleX = 1 / scaleX;\n this.rcpScaleY = 1 / scaleY;\n\n var oW = imageData.width,\n oH = imageData.height,\n dW = round(oW * scaleX),\n dH = round(oH * scaleY),\n newData;\n\n if (this.resizeType === 'sliceHack') {\n newData = this.sliceByTwo(options, oW, oH, dW, dH);\n } else if (this.resizeType === 'hermite') {\n newData = this.hermiteFastResize(options, oW, oH, dW, dH);\n } else if (this.resizeType === 'bilinear') {\n newData = this.bilinearFiltering(options, oW, oH, dW, dH);\n } else if (this.resizeType === 'lanczos') {\n newData = this.lanczosResize(options, oW, oH, dW, dH);\n }\n options.imageData = newData;\n },\n\n /**\n * Filter sliceByTwo\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} oW Original Width\n * @param {Number} oH Original Height\n * @param {Number} dW Destination Width\n * @param {Number} dH Destination Height\n * @returns {ImageData}\n */\n sliceByTwo: function (options, oW, oH, dW, dH) {\n var imageData = options.imageData,\n mult = 0.5,\n doneW = false,\n doneH = false,\n stepW = oW * mult,\n stepH = oH * mult,\n resources = fabric.filterBackend.resources,\n tmpCanvas,\n ctx,\n sX = 0,\n sY = 0,\n dX = oW,\n dY = 0;\n if (!resources.sliceByTwo) {\n resources.sliceByTwo = document.createElement('canvas');\n }\n tmpCanvas = resources.sliceByTwo;\n if (tmpCanvas.width < oW * 1.5 || tmpCanvas.height < oH) {\n tmpCanvas.width = oW * 1.5;\n tmpCanvas.height = oH;\n }\n ctx = tmpCanvas.getContext('2d');\n ctx.clearRect(0, 0, oW * 1.5, oH);\n ctx.putImageData(imageData, 0, 0);\n\n dW = floor(dW);\n dH = floor(dH);\n\n while (!doneW || !doneH) {\n oW = stepW;\n oH = stepH;\n if (dW < floor(stepW * mult)) {\n stepW = floor(stepW * mult);\n } else {\n stepW = dW;\n doneW = true;\n }\n if (dH < floor(stepH * mult)) {\n stepH = floor(stepH * mult);\n } else {\n stepH = dH;\n doneH = true;\n }\n ctx.drawImage(tmpCanvas, sX, sY, oW, oH, dX, dY, stepW, stepH);\n sX = dX;\n sY = dY;\n dY += stepH;\n }\n return ctx.getImageData(sX, sY, dW, dH);\n },\n\n /**\n * Filter lanczosResize\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} oW Original Width\n * @param {Number} oH Original Height\n * @param {Number} dW Destination Width\n * @param {Number} dH Destination Height\n * @returns {ImageData}\n */\n lanczosResize: function (options, oW, oH, dW, dH) {\n function process(u) {\n var v, i, weight, idx, a, red, green, blue, alpha, fX, fY;\n center.x = (u + 0.5) * ratioX;\n icenter.x = floor(center.x);\n for (v = 0; v < dH; v++) {\n center.y = (v + 0.5) * ratioY;\n icenter.y = floor(center.y);\n a = 0;\n red = 0;\n green = 0;\n blue = 0;\n alpha = 0;\n for (i = icenter.x - range2X; i <= icenter.x + range2X; i++) {\n if (i < 0 || i >= oW) {\n continue;\n }\n fX = floor(1000 * abs(i - center.x));\n if (!cacheLanc[fX]) {\n cacheLanc[fX] = {};\n }\n for (var j = icenter.y - range2Y; j <= icenter.y + range2Y; j++) {\n if (j < 0 || j >= oH) {\n continue;\n }\n fY = floor(1000 * abs(j - center.y));\n if (!cacheLanc[fX][fY]) {\n cacheLanc[fX][fY] = lanczos(\n sqrt(pow(fX * rcpRatioX, 2) + pow(fY * rcpRatioY, 2)) / 1000\n );\n }\n weight = cacheLanc[fX][fY];\n if (weight > 0) {\n idx = (j * oW + i) * 4;\n a += weight;\n red += weight * srcData[idx];\n green += weight * srcData[idx + 1];\n blue += weight * srcData[idx + 2];\n alpha += weight * srcData[idx + 3];\n }\n }\n }\n idx = (v * dW + u) * 4;\n destData[idx] = red / a;\n destData[idx + 1] = green / a;\n destData[idx + 2] = blue / a;\n destData[idx + 3] = alpha / a;\n }\n\n if (++u < dW) {\n return process(u);\n } else {\n return destImg;\n }\n }\n\n var srcData = options.imageData.data,\n destImg = options.ctx.createImageData(dW, dH),\n destData = destImg.data,\n lanczos = this.lanczosCreate(this.lanczosLobes),\n ratioX = this.rcpScaleX,\n ratioY = this.rcpScaleY,\n rcpRatioX = 2 / this.rcpScaleX,\n rcpRatioY = 2 / this.rcpScaleY,\n range2X = ceil((ratioX * this.lanczosLobes) / 2),\n range2Y = ceil((ratioY * this.lanczosLobes) / 2),\n cacheLanc = {},\n center = {},\n icenter = {};\n\n return process(0);\n },\n\n /**\n * bilinearFiltering\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} oW Original Width\n * @param {Number} oH Original Height\n * @param {Number} dW Destination Width\n * @param {Number} dH Destination Height\n * @returns {ImageData}\n */\n bilinearFiltering: function (options, oW, oH, dW, dH) {\n var a,\n b,\n c,\n d,\n x,\n y,\n i,\n j,\n xDiff,\n yDiff,\n chnl,\n color,\n offset = 0,\n origPix,\n ratioX = this.rcpScaleX,\n ratioY = this.rcpScaleY,\n w4 = 4 * (oW - 1),\n img = options.imageData,\n pixels = img.data,\n destImage = options.ctx.createImageData(dW, dH),\n destPixels = destImage.data;\n for (i = 0; i < dH; i++) {\n for (j = 0; j < dW; j++) {\n x = floor(ratioX * j);\n y = floor(ratioY * i);\n xDiff = ratioX * j - x;\n yDiff = ratioY * i - y;\n origPix = 4 * (y * oW + x);\n\n for (chnl = 0; chnl < 4; chnl++) {\n a = pixels[origPix + chnl];\n b = pixels[origPix + 4 + chnl];\n c = pixels[origPix + w4 + chnl];\n d = pixels[origPix + w4 + 4 + chnl];\n color =\n a * (1 - xDiff) * (1 - yDiff) +\n b * xDiff * (1 - yDiff) +\n c * yDiff * (1 - xDiff) +\n d * xDiff * yDiff;\n destPixels[offset++] = color;\n }\n }\n }\n return destImage;\n },\n\n /**\n * hermiteFastResize\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} oW Original Width\n * @param {Number} oH Original Height\n * @param {Number} dW Destination Width\n * @param {Number} dH Destination Height\n * @returns {ImageData}\n */\n hermiteFastResize: function (options, oW, oH, dW, dH) {\n var ratioW = this.rcpScaleX,\n ratioH = this.rcpScaleY,\n ratioWHalf = ceil(ratioW / 2),\n ratioHHalf = ceil(ratioH / 2),\n img = options.imageData,\n data = img.data,\n img2 = options.ctx.createImageData(dW, dH),\n data2 = img2.data;\n for (var j = 0; j < dH; j++) {\n for (var i = 0; i < dW; i++) {\n var x2 = (i + j * dW) * 4,\n weight = 0,\n weights = 0,\n weightsAlpha = 0,\n gxR = 0,\n gxG = 0,\n gxB = 0,\n gxA = 0,\n centerY = (j + 0.5) * ratioH;\n for (var yy = floor(j * ratioH); yy < (j + 1) * ratioH; yy++) {\n var dy = abs(centerY - (yy + 0.5)) / ratioHHalf,\n centerX = (i + 0.5) * ratioW,\n w0 = dy * dy;\n for (var xx = floor(i * ratioW); xx < (i + 1) * ratioW; xx++) {\n var dx = abs(centerX - (xx + 0.5)) / ratioWHalf,\n w = sqrt(w0 + dx * dx);\n /* eslint-disable max-depth */\n if (w > 1 && w < -1) {\n continue;\n }\n //hermite filter\n weight = 2 * w * w * w - 3 * w * w + 1;\n if (weight > 0) {\n dx = 4 * (xx + yy * oW);\n //alpha\n gxA += weight * data[dx + 3];\n weightsAlpha += weight;\n //colors\n if (data[dx + 3] < 255) {\n weight = (weight * data[dx + 3]) / 250;\n }\n gxR += weight * data[dx];\n gxG += weight * data[dx + 1];\n gxB += weight * data[dx + 2];\n weights += weight;\n }\n /* eslint-enable max-depth */\n }\n }\n data2[x2] = gxR / weights;\n data2[x2 + 1] = gxG / weights;\n data2[x2 + 2] = gxB / weights;\n data2[x2 + 3] = gxA / weightsAlpha;\n }\n }\n return img2;\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return {\n type: this.type,\n scaleX: this.scaleX,\n scaleY: this.scaleY,\n resizeType: this.resizeType,\n lanczosLobes: this.lanczosLobes,\n };\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Resize.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Contrast filter class\n * @class fabric.Image.filters.Contrast\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Contrast#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Contrast({\n * contrast: 0.25\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Contrast = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Contrast.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Contrast',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uContrast;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'float contrastF = 1.015 * (uContrast + 1.0) / (1.0 * (1.015 - uContrast));\\n' +\n 'color.rgb = contrastF * (color.rgb - 0.5) + 0.5;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * contrast value, range from -1 to 1.\n * @param {Number} contrast\n * @default 0\n */\n contrast: 0,\n\n mainParameter: 'contrast',\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.Contrast.prototype\n * @param {Object} [options] Options object\n * @param {Number} [options.contrast=0] Value to contrast the image up (-1...1)\n */\n\n /**\n * Apply the Contrast operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n if (this.contrast === 0) {\n return;\n }\n var imageData = options.imageData,\n i,\n len,\n data = imageData.data,\n len = data.length,\n contrast = Math.floor(this.contrast * 255),\n contrastF = (259 * (contrast + 255)) / (255 * (259 - contrast));\n\n for (i = 0; i < len; i += 4) {\n data[i] = contrastF * (data[i] - 128) + 128;\n data[i + 1] = contrastF * (data[i + 1] - 128) + 128;\n data[i + 2] = contrastF * (data[i + 2] - 128) + 128;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uContrast: gl.getUniformLocation(program, 'uContrast'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uContrast, this.contrast);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Contrast.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Saturate filter class\n * @class fabric.Image.filters.Saturation\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Saturation#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Saturation({\n * saturation: 1\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Saturation = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Saturation.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Saturation',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uSaturation;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'float rgMax = max(color.r, color.g);\\n' +\n 'float rgbMax = max(rgMax, color.b);\\n' +\n 'color.r += rgbMax != color.r ? (rgbMax - color.r) * uSaturation : 0.00;\\n' +\n 'color.g += rgbMax != color.g ? (rgbMax - color.g) * uSaturation : 0.00;\\n' +\n 'color.b += rgbMax != color.b ? (rgbMax - color.b) * uSaturation : 0.00;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Saturation value, from -1 to 1.\n * Increases/decreases the color saturation.\n * A value of 0 has no effect.\n *\n * @param {Number} saturation\n * @default\n */\n saturation: 0,\n\n mainParameter: 'saturation',\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.Saturate.prototype\n * @param {Object} [options] Options object\n * @param {Number} [options.saturate=0] Value to saturate the image (-1...1)\n */\n\n /**\n * Apply the Saturation operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n if (this.saturation === 0) {\n return;\n }\n var imageData = options.imageData,\n data = imageData.data,\n len = data.length,\n adjust = -this.saturation,\n i,\n max;\n\n for (i = 0; i < len; i += 4) {\n max = Math.max(data[i], data[i + 1], data[i + 2]);\n data[i] += max !== data[i] ? (max - data[i]) * adjust : 0;\n data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * adjust : 0;\n data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * adjust : 0;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uSaturation: gl.getUniformLocation(program, 'uSaturation'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uSaturation, -this.saturation);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Saturation.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Vibrance filter class\n * @class fabric.Image.filters.Vibrance\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Vibrance#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Vibrance({\n * vibrance: 1\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Vibrance = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Vibrance.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Vibrance',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uVibrance;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'float max = max(color.r, max(color.g, color.b));\\n' +\n 'float avg = (color.r + color.g + color.b) / 3.0;\\n' +\n 'float amt = (abs(max - avg) * 2.0) * uVibrance;\\n' +\n 'color.r += max != color.r ? (max - color.r) * amt : 0.00;\\n' +\n 'color.g += max != color.g ? (max - color.g) * amt : 0.00;\\n' +\n 'color.b += max != color.b ? (max - color.b) * amt : 0.00;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Vibrance value, from -1 to 1.\n * Increases/decreases the saturation of more muted colors with less effect on saturated colors.\n * A value of 0 has no effect.\n *\n * @param {Number} vibrance\n * @default\n */\n vibrance: 0,\n\n mainParameter: 'vibrance',\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.Vibrance.prototype\n * @param {Object} [options] Options object\n * @param {Number} [options.vibrance=0] Vibrance value for the image (between -1 and 1)\n */\n\n /**\n * Apply the Vibrance operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n if (this.vibrance === 0) {\n return;\n }\n var imageData = options.imageData,\n data = imageData.data,\n len = data.length,\n adjust = -this.vibrance,\n i,\n max,\n avg,\n amt;\n\n for (i = 0; i < len; i += 4) {\n max = Math.max(data[i], data[i + 1], data[i + 2]);\n avg = (data[i] + data[i + 1] + data[i + 2]) / 3;\n amt = ((Math.abs(max - avg) * 2) / 255) * adjust;\n data[i] += max !== data[i] ? (max - data[i]) * amt : 0;\n data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * amt : 0;\n data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * amt : 0;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uVibrance: gl.getUniformLocation(program, 'uVibrance'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uVibrance, -this.vibrance);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Vibrance.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Blur filter class\n * @class fabric.Image.filters.Blur\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Blur#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Blur({\n * blur: 0.5\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n filters.Blur = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Blur.prototype */ {\n type: 'Blur',\n\n /*\n'gl_FragColor = vec4(0.0);',\n'gl_FragColor += texture2D(texture, vTexCoord + -7 * uDelta)*0.0044299121055113265;',\n'gl_FragColor += texture2D(texture, vTexCoord + -6 * uDelta)*0.00895781211794;',\n'gl_FragColor += texture2D(texture, vTexCoord + -5 * uDelta)*0.0215963866053;',\n'gl_FragColor += texture2D(texture, vTexCoord + -4 * uDelta)*0.0443683338718;',\n'gl_FragColor += texture2D(texture, vTexCoord + -3 * uDelta)*0.0776744219933;',\n'gl_FragColor += texture2D(texture, vTexCoord + -2 * uDelta)*0.115876621105;',\n'gl_FragColor += texture2D(texture, vTexCoord + -1 * uDelta)*0.147308056121;',\n'gl_FragColor += texture2D(texture, vTexCoord )*0.159576912161;',\n'gl_FragColor += texture2D(texture, vTexCoord + 1 * uDelta)*0.147308056121;',\n'gl_FragColor += texture2D(texture, vTexCoord + 2 * uDelta)*0.115876621105;',\n'gl_FragColor += texture2D(texture, vTexCoord + 3 * uDelta)*0.0776744219933;',\n'gl_FragColor += texture2D(texture, vTexCoord + 4 * uDelta)*0.0443683338718;',\n'gl_FragColor += texture2D(texture, vTexCoord + 5 * uDelta)*0.0215963866053;',\n'gl_FragColor += texture2D(texture, vTexCoord + 6 * uDelta)*0.00895781211794;',\n'gl_FragColor += texture2D(texture, vTexCoord + 7 * uDelta)*0.0044299121055113265;',\n*/\n\n /* eslint-disable max-len */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec2 uDelta;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'const float nSamples = 15.0;\\n' +\n 'vec3 v3offset = vec3(12.9898, 78.233, 151.7182);\\n' +\n 'float random(vec3 scale) {\\n' +\n /* use the fragment position for a different seed per-pixel */\n 'return fract(sin(dot(gl_FragCoord.xyz, scale)) * 43758.5453);\\n' +\n '}\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0.0);\\n' +\n 'float total = 0.0;\\n' +\n 'float offset = random(v3offset);\\n' +\n 'for (float t = -nSamples; t <= nSamples; t++) {\\n' +\n 'float percent = (t + offset - 0.5) / nSamples;\\n' +\n 'float weight = 1.0 - abs(percent);\\n' +\n 'color += texture2D(uTexture, vTexCoord + uDelta * percent) * weight;\\n' +\n 'total += weight;\\n' +\n '}\\n' +\n 'gl_FragColor = color / total;\\n' +\n '}',\n /* eslint-enable max-len */\n\n /**\n * blur value, in percentage of image dimensions.\n * specific to keep the image blur constant at different resolutions\n * range between 0 and 1.\n * @type Number\n * @default\n */\n blur: 0,\n\n mainParameter: 'blur',\n\n applyTo: function (options) {\n if (options.webgl) {\n // this aspectRatio is used to give the same blur to vertical and horizontal\n this.aspectRatio = options.sourceWidth / options.sourceHeight;\n options.passes++;\n this._setupFrameBuffer(options);\n this.horizontal = true;\n this.applyToWebGL(options);\n this._swapTextures(options);\n this._setupFrameBuffer(options);\n this.horizontal = false;\n this.applyToWebGL(options);\n this._swapTextures(options);\n } else {\n this.applyTo2d(options);\n }\n },\n\n applyTo2d: function (options) {\n // paint canvasEl with current image data.\n //options.ctx.putImageData(options.imageData, 0, 0);\n options.imageData = this.simpleBlur(options);\n },\n\n simpleBlur: function (options) {\n var resources = options.filterBackend.resources,\n canvas1,\n canvas2,\n width = options.imageData.width,\n height = options.imageData.height;\n\n if (!resources.blurLayer1) {\n resources.blurLayer1 = fabric.util.createCanvasElement();\n resources.blurLayer2 = fabric.util.createCanvasElement();\n }\n canvas1 = resources.blurLayer1;\n canvas2 = resources.blurLayer2;\n if (canvas1.width !== width || canvas1.height !== height) {\n canvas2.width = canvas1.width = width;\n canvas2.height = canvas1.height = height;\n }\n var ctx1 = canvas1.getContext('2d'),\n ctx2 = canvas2.getContext('2d'),\n nSamples = 15,\n random,\n percent,\n j,\n i,\n blur = this.blur * 0.06 * 0.5;\n\n // load first canvas\n ctx1.putImageData(options.imageData, 0, 0);\n ctx2.clearRect(0, 0, width, height);\n\n for (i = -nSamples; i <= nSamples; i++) {\n random = (Math.random() - 0.5) / 4;\n percent = i / nSamples;\n j = blur * percent * width + random;\n ctx2.globalAlpha = 1 - Math.abs(percent);\n ctx2.drawImage(canvas1, j, random);\n ctx1.drawImage(canvas2, 0, 0);\n ctx2.globalAlpha = 1;\n ctx2.clearRect(0, 0, canvas2.width, canvas2.height);\n }\n for (i = -nSamples; i <= nSamples; i++) {\n random = (Math.random() - 0.5) / 4;\n percent = i / nSamples;\n j = blur * percent * height + random;\n ctx2.globalAlpha = 1 - Math.abs(percent);\n ctx2.drawImage(canvas1, random, j);\n ctx1.drawImage(canvas2, 0, 0);\n ctx2.globalAlpha = 1;\n ctx2.clearRect(0, 0, canvas2.width, canvas2.height);\n }\n options.ctx.drawImage(canvas1, 0, 0);\n var newImageData = options.ctx.getImageData(\n 0,\n 0,\n canvas1.width,\n canvas1.height\n );\n ctx1.globalAlpha = 1;\n ctx1.clearRect(0, 0, canvas1.width, canvas1.height);\n return newImageData;\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n delta: gl.getUniformLocation(program, 'uDelta'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var delta = this.chooseRightDelta();\n gl.uniform2fv(uniformLocations.delta, delta);\n },\n\n /**\n * choose right value of image percentage to blur with\n * @returns {Array} a numeric array with delta values\n */\n chooseRightDelta: function () {\n var blurScale = 1,\n delta = [0, 0],\n blur;\n if (this.horizontal) {\n if (this.aspectRatio > 1) {\n // image is wide, i want to shrink radius horizontal\n blurScale = 1 / this.aspectRatio;\n }\n } else {\n if (this.aspectRatio < 1) {\n // image is tall, i want to shrink radius vertical\n blurScale = this.aspectRatio;\n }\n }\n blur = blurScale * this.blur * 0.12;\n if (this.horizontal) {\n delta[0] = blur;\n } else {\n delta[1] = blur;\n }\n return delta;\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n filters.Blur.fromObject = fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Gamma filter class\n * @class fabric.Image.filters.Gamma\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Gamma#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Gamma({\n * gamma: [1, 0.5, 2.1]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Gamma = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Gamma.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Gamma',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec3 uGamma;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'vec3 correction = (1.0 / uGamma);\\n' +\n 'color.r = pow(color.r, correction.r);\\n' +\n 'color.g = pow(color.g, correction.g);\\n' +\n 'color.b = pow(color.b, correction.b);\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.rgb *= color.a;\\n' +\n '}',\n\n /**\n * Gamma array value, from 0.01 to 2.2.\n * @param {Array} gamma\n * @default\n */\n gamma: [1, 1, 1],\n\n /**\n * Describe the property that is the filter parameter\n * @param {String} m\n * @default\n */\n mainParameter: 'gamma',\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n this.gamma = [1, 1, 1];\n filters.BaseFilter.prototype.initialize.call(this, options);\n },\n\n /**\n * Apply the Gamma operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n gamma = this.gamma,\n len = data.length,\n rInv = 1 / gamma[0],\n gInv = 1 / gamma[1],\n bInv = 1 / gamma[2],\n i;\n\n if (!this.rVals) {\n // eslint-disable-next-line\n this.rVals = new Uint8Array(256);\n // eslint-disable-next-line\n this.gVals = new Uint8Array(256);\n // eslint-disable-next-line\n this.bVals = new Uint8Array(256);\n }\n\n // This is an optimization - pre-compute a look-up table for each color channel\n // instead of performing these pow calls for each pixel in the image.\n for (i = 0, len = 256; i < len; i++) {\n this.rVals[i] = Math.pow(i / 255, rInv) * 255;\n this.gVals[i] = Math.pow(i / 255, gInv) * 255;\n this.bVals[i] = Math.pow(i / 255, bInv) * 255;\n }\n for (i = 0, len = data.length; i < len; i += 4) {\n data[i] = this.rVals[data[i]];\n data[i + 1] = this.gVals[data[i + 1]];\n data[i + 2] = this.bVals[data[i + 2]];\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uGamma: gl.getUniformLocation(program, 'uGamma'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform3fv(uniformLocations.uGamma, this.gamma);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Gamma.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * A container class that knows how to apply a sequence of filters to an input image.\n */\n filters.Composed = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Composed.prototype */ {\n type: 'Composed',\n\n /**\n * A non sparse array of filters to apply\n */\n subFilters: [],\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n this.callSuper('initialize', options);\n // create a new array instead mutating the prototype with push\n this.subFilters = this.subFilters.slice(0);\n },\n\n /**\n * Apply this container's filters to the input image provided.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be applied.\n */\n applyTo: function (options) {\n options.passes += this.subFilters.length - 1;\n this.subFilters.forEach(function (filter) {\n filter.applyTo(options);\n });\n },\n\n /**\n * Serialize this filter into JSON.\n *\n * @returns {Object} A JSON representation of this filter.\n */\n toObject: function () {\n return fabric.util.object.extend(this.callSuper('toObject'), {\n subFilters: this.subFilters.map(function (filter) {\n return filter.toObject();\n }),\n });\n },\n\n isNeutralState: function () {\n return !this.subFilters.some(function (filter) {\n return !filter.isNeutralState();\n });\n },\n }\n );\n\n /**\n * Deserialize a JSON definition of a ComposedFilter into a concrete instance.\n * @static\n * @param {oject} object Object to create an instance from\n * @param {object} [options]\n * @param {AbortSignal} [options.signal] handle aborting `BlendImage` filter loading, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Image.filters.Composed.fromObject = function (object, options) {\n var filters = object.subFilters || [];\n return Promise.all(\n filters.map(function (filter) {\n return fabric.Image.filters[filter.type].fromObject(filter, options);\n })\n ).then(function (enlivedFilters) {\n return new fabric.Image.filters.Composed({ subFilters: enlivedFilters });\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * HueRotation filter class\n * @class fabric.Image.filters.HueRotation\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.HueRotation#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.HueRotation({\n * rotation: -0.5\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.HueRotation = createClass(\n filters.ColorMatrix,\n /** @lends fabric.Image.filters.HueRotation.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'HueRotation',\n\n /**\n * HueRotation value, from -1 to 1.\n * the unit is radians\n * @param {Number} myParameter\n * @default\n */\n rotation: 0,\n\n /**\n * Describe the property that is the filter parameter\n * @param {String} m\n * @default\n */\n mainParameter: 'rotation',\n\n calculateMatrix: function () {\n var rad = this.rotation * Math.PI,\n cos = fabric.util.cos(rad),\n sin = fabric.util.sin(rad),\n aThird = 1 / 3,\n aThirdSqtSin = Math.sqrt(aThird) * sin,\n OneMinusCos = 1 - cos;\n this.matrix = [\n 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0,\n ];\n this.matrix[0] = cos + OneMinusCos / 3;\n this.matrix[1] = aThird * OneMinusCos - aThirdSqtSin;\n this.matrix[2] = aThird * OneMinusCos + aThirdSqtSin;\n this.matrix[5] = aThird * OneMinusCos + aThirdSqtSin;\n this.matrix[6] = cos + aThird * OneMinusCos;\n this.matrix[7] = aThird * OneMinusCos - aThirdSqtSin;\n this.matrix[10] = aThird * OneMinusCos - aThirdSqtSin;\n this.matrix[11] = aThird * OneMinusCos + aThirdSqtSin;\n this.matrix[12] = cos + aThird * OneMinusCos;\n },\n\n /**\n * HueRotation isNeutralState implementation\n * Used only in image applyFilters to discard filters that will not have an effect\n * on the image\n * @param {Object} options\n **/\n isNeutralState: function (options) {\n this.calculateMatrix();\n return filters.BaseFilter.prototype.isNeutralState.call(this, options);\n },\n\n /**\n * Apply this filter to the input image data provided.\n *\n * Determines whether to use WebGL or Canvas2D based on the options.webgl flag.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be executed\n * @param {Boolean} options.webgl Whether to use webgl to render the filter.\n * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered.\n * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn.\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n applyTo: function (options) {\n this.calculateMatrix();\n filters.BaseFilter.prototype.applyTo.call(this, options);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.HueRotation.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { cache } from '../cache';\nimport { DEFAULT_SVG_FONT_SIZE } from '../constants';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n\n var additionalProps = (\n 'fontFamily fontWeight fontSize text underline overline linethrough' +\n ' textAlign fontStyle lineHeight textBackgroundColor charSpacing styles' +\n ' direction path pathStartOffset pathSide pathAlign'\n ).split(' ');\n\n /**\n * Text class\n * @class fabric.Text\n * @extends fabric.Object\n * @return {fabric.Text} thisArg\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#text}\n * @see {@link fabric.Text#initialize} for constructor definition\n */\n fabric.Text = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Text.prototype */ {\n /**\n * Properties which when set cause object to change dimensions\n * @type Array\n * @private\n */\n _dimensionAffectingProps: [\n 'fontSize',\n 'fontWeight',\n 'fontFamily',\n 'fontStyle',\n 'lineHeight',\n 'text',\n 'charSpacing',\n 'textAlign',\n 'styles',\n 'path',\n 'pathStartOffset',\n 'pathSide',\n 'pathAlign',\n ],\n\n /**\n * @private\n */\n _reNewline: /\\r?\\n/,\n\n /**\n * Use this regular expression to filter for whitespaces that is not a new line.\n * Mostly used when text is 'justify' aligned.\n * @private\n */\n _reSpacesAndTabs: /[ \\t\\r]/g,\n\n /**\n * Use this regular expression to filter for whitespace that is not a new line.\n * Mostly used when text is 'justify' aligned.\n * @private\n */\n _reSpaceAndTab: /[ \\t\\r]/,\n\n /**\n * Use this regular expression to filter consecutive groups of non spaces.\n * Mostly used when text is 'justify' aligned.\n * @private\n */\n _reWords: /\\S+/g,\n\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'text',\n\n /**\n * Font size (in pixels)\n * @type Number\n * @default\n */\n fontSize: 40,\n\n /**\n * Font weight (e.g. bold, normal, 400, 600, 800)\n * @type {(Number|String)}\n * @default\n */\n fontWeight: 'normal',\n\n /**\n * Font family\n * @type String\n * @default\n */\n fontFamily: 'Times New Roman',\n\n /**\n * Text decoration underline.\n * @type Boolean\n * @default\n */\n underline: false,\n\n /**\n * Text decoration overline.\n * @type Boolean\n * @default\n */\n overline: false,\n\n /**\n * Text decoration linethrough.\n * @type Boolean\n * @default\n */\n linethrough: false,\n\n /**\n * Text alignment. Possible values: \"left\", \"center\", \"right\", \"justify\",\n * \"justify-left\", \"justify-center\" or \"justify-right\".\n * @type String\n * @default\n */\n textAlign: 'left',\n\n /**\n * Font style . Possible values: \"\", \"normal\", \"italic\" or \"oblique\".\n * @type String\n * @default\n */\n fontStyle: 'normal',\n\n /**\n * Line height\n * @type Number\n * @default\n */\n lineHeight: 1.16,\n\n /**\n * Superscript schema object (minimum overlap)\n * @type {Object}\n * @default\n */\n superscript: {\n size: 0.6, // fontSize factor\n baseline: -0.35, // baseline-shift factor (upwards)\n },\n\n /**\n * Subscript schema object (minimum overlap)\n * @type {Object}\n * @default\n */\n subscript: {\n size: 0.6, // fontSize factor\n baseline: 0.11, // baseline-shift factor (downwards)\n },\n\n /**\n * Background color of text lines\n * @type String\n * @default\n */\n textBackgroundColor: '',\n\n /**\n * List of properties to consider when checking if\n * state of an object is changed ({@link fabric.Object#hasStateChanged})\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties:\n fabric.Object.prototype.stateProperties.concat(additionalProps),\n\n /**\n * List of properties to consider when checking if cache needs refresh\n * @type Array\n */\n cacheProperties:\n fabric.Object.prototype.cacheProperties.concat(additionalProps),\n\n /**\n * When defined, an object is rendered via stroke and this property specifies its color.\n * Backwards incompatibility note: This property was named \"strokeStyle\" until v1.1.6\n * @type String\n * @default\n */\n stroke: null,\n\n /**\n * Shadow object representing shadow of this shape.\n * Backwards incompatibility note: This property was named \"textShadow\" (String) until v1.2.11\n * @type fabric.Shadow\n * @default\n */\n shadow: null,\n\n /**\n * fabric.Path that the text should follow.\n * since 4.6.0 the path will be drawn automatically.\n * if you want to make the path visible, give it a stroke and strokeWidth or fill value\n * if you want it to be hidden, assign visible = false to the path.\n * This feature is in BETA, and SVG import/export is not yet supported.\n * @type fabric.Path\n * @example\n * var textPath = new fabric.Text('Text on a path', {\n * top: 150,\n * left: 150,\n * textAlign: 'center',\n * charSpacing: -50,\n * path: new fabric.Path('M 0 0 C 50 -100 150 -100 200 0', {\n * strokeWidth: 1,\n * visible: false\n * }),\n * pathSide: 'left',\n * pathStartOffset: 0\n * });\n * @default\n */\n path: null,\n\n /**\n * Offset amount for text path starting position\n * Only used when text has a path\n * @type Number\n * @default\n */\n pathStartOffset: 0,\n\n /**\n * Which side of the path the text should be drawn on.\n * Only used when text has a path\n * @type {String} 'left|right'\n * @default\n */\n pathSide: 'left',\n\n /**\n * How text is aligned to the path. This property determines\n * the perpendicular position of each character relative to the path.\n * (one of \"baseline\", \"center\", \"ascender\", \"descender\")\n * This feature is in BETA, and its behavior may change\n * @type String\n * @default\n */\n pathAlign: 'baseline',\n\n /**\n * @private\n */\n _fontSizeFraction: 0.222,\n\n /**\n * @private\n */\n offsets: {\n underline: 0.1,\n linethrough: -0.315,\n overline: -0.88,\n },\n\n /**\n * Text Line proportion to font Size (in pixels)\n * @type Number\n * @default\n */\n _fontSizeMult: 1.13,\n\n /**\n * additional space between characters\n * expressed in thousands of em unit\n * @type Number\n * @default\n */\n charSpacing: 0,\n\n /**\n * Object containing character styles - top-level properties -> line numbers,\n * 2nd-level properties - character numbers\n * @type Object\n * @default\n */\n styles: null,\n\n /**\n * Reference to a context to measure text char or couple of chars\n * the cacheContext of the canvas will be used or a freshly created one if the object is not on canvas\n * once created it will be referenced on fabric._measuringContext to avoid creating a canvas for every\n * text object created.\n * @type {CanvasRenderingContext2D}\n * @default\n */\n _measuringContext: null,\n\n /**\n * Baseline shift, styles only, keep at 0 for the main text object\n * @type {Number}\n * @default\n */\n deltaY: 0,\n\n /**\n * WARNING: EXPERIMENTAL. NOT SUPPORTED YET\n * determine the direction of the text.\n * This has to be set manually together with textAlign and originX for proper\n * experience.\n * some interesting link for the future\n * https://www.w3.org/International/questions/qa-bidi-unicode-controls\n * @since 4.5.0\n * @type {String} 'ltr|rtl'\n * @default\n */\n direction: 'ltr',\n\n /**\n * Array of properties that define a style unit (of 'styles').\n * @type {Array}\n * @default\n */\n _styleProperties: [\n 'stroke',\n 'strokeWidth',\n 'fill',\n 'fontFamily',\n 'fontSize',\n 'fontWeight',\n 'fontStyle',\n 'underline',\n 'overline',\n 'linethrough',\n 'deltaY',\n 'textBackgroundColor',\n ],\n\n /**\n * contains characters bounding boxes\n */\n __charBounds: [],\n\n /**\n * use this size when measuring text. To avoid IE11 rounding errors\n * @type {Number}\n * @default\n * @readonly\n * @private\n */\n CACHE_FONT_SIZE: 400,\n\n /**\n * contains the min text width to avoid getting 0\n * @type {Number}\n * @default\n */\n MIN_TEXT_WIDTH: 2,\n\n /**\n * Constructor\n * @param {String} text Text string\n * @param {Object} [options] Options object\n * @return {fabric.Text} thisArg\n */\n initialize: function (text, options) {\n this.styles = options ? options.styles || {} : {};\n this.text = text;\n this.__skipDimension = true;\n this.callSuper('initialize', options);\n if (this.path) {\n this.setPathInfo();\n }\n this.__skipDimension = false;\n this.initDimensions();\n this.setCoords();\n this.setupState({ propertySet: '_dimensionAffectingProps' });\n },\n\n /**\n * If text has a path, it will add the extra information needed\n * for path and text calculations\n * @return {fabric.Text} thisArg\n */\n setPathInfo: function () {\n var path = this.path;\n if (path) {\n path.segmentsInfo = fabric.util.getPathSegmentsInfo(path.path);\n }\n },\n\n /**\n * Return a context for measurement of text string.\n * if created it gets stored for reuse\n * this is for internal use, please do not use it\n * @private\n * @param {String} text Text string\n * @param {Object} [options] Options object\n * @return {fabric.Text} thisArg\n */\n getMeasuringContext: function () {\n // if we did not return we have to measure something.\n if (!fabric._measuringContext) {\n fabric._measuringContext =\n (this.canvas && this.canvas.contextCache) ||\n fabric.util.createCanvasElement().getContext('2d');\n }\n return fabric._measuringContext;\n },\n\n /**\n * @private\n * Divides text into lines of text and lines of graphemes.\n */\n _splitText: function () {\n var newLines = this._splitTextIntoLines(this.text);\n this.textLines = newLines.lines;\n this._textLines = newLines.graphemeLines;\n this._unwrappedTextLines = newLines._unwrappedLines;\n this._text = newLines.graphemeText;\n return newLines;\n },\n\n /**\n * Initialize or update text dimensions.\n * Updates this.width and this.height with the proper values.\n * Does not return dimensions.\n */\n initDimensions: function () {\n if (this.__skipDimension) {\n return;\n }\n this._splitText();\n this._clearCache();\n if (this.path) {\n this.width = this.path.width;\n this.height = this.path.height;\n } else {\n this.width =\n this.calcTextWidth() || this.cursorWidth || this.MIN_TEXT_WIDTH;\n this.height = this.calcTextHeight();\n }\n if (this.textAlign.indexOf('justify') !== -1) {\n // once text is measured we need to make space fatter to make justified text.\n this.enlargeSpaces();\n }\n this.saveState({ propertySet: '_dimensionAffectingProps' });\n },\n\n /**\n * Enlarge space boxes and shift the others\n */\n enlargeSpaces: function () {\n var diffSpace,\n currentLineWidth,\n numberOfSpaces,\n accumulatedSpace,\n line,\n charBound,\n spaces;\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n if (\n this.textAlign !== 'justify' &&\n (i === len - 1 || this.isEndOfWrapping(i))\n ) {\n continue;\n }\n accumulatedSpace = 0;\n line = this._textLines[i];\n currentLineWidth = this.getLineWidth(i);\n if (\n currentLineWidth < this.width &&\n (spaces = this.textLines[i].match(this._reSpacesAndTabs))\n ) {\n numberOfSpaces = spaces.length;\n diffSpace = (this.width - currentLineWidth) / numberOfSpaces;\n for (var j = 0, jlen = line.length; j <= jlen; j++) {\n charBound = this.__charBounds[i][j];\n if (this._reSpaceAndTab.test(line[j])) {\n charBound.width += diffSpace;\n charBound.kernedWidth += diffSpace;\n charBound.left += accumulatedSpace;\n accumulatedSpace += diffSpace;\n } else {\n charBound.left += accumulatedSpace;\n }\n }\n }\n }\n },\n\n /**\n * Detect if the text line is ended with an hard break\n * text and itext do not have wrapping, return false\n * @return {Boolean}\n */\n isEndOfWrapping: function (lineIndex) {\n return lineIndex === this._textLines.length - 1;\n },\n\n /**\n * Detect if a line has a linebreak and so we need to account for it when moving\n * and counting style.\n * It return always for text and Itext.\n * @return Number\n */\n missingNewlineOffset: function () {\n return 1;\n },\n\n /**\n * Returns string representation of an instance\n * @return {String} String representation of text object\n */\n toString: function () {\n return (\n '#'\n );\n },\n\n /**\n * Return the dimension and the zoom level needed to create a cache canvas\n * big enough to host the object to be cached.\n * @private\n * @param {Object} dim.x width of object to be cached\n * @param {Object} dim.y height of object to be cached\n * @return {Object}.width width of canvas\n * @return {Object}.height height of canvas\n * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache\n * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache\n */\n _getCacheCanvasDimensions: function () {\n var dims = this.callSuper('_getCacheCanvasDimensions');\n var fontSize = this.fontSize;\n dims.width += fontSize * dims.zoomX;\n dims.height += fontSize * dims.zoomY;\n return dims;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n var path = this.path;\n path && !path.isNotVisible() && path._render(ctx);\n this._setTextStyles(ctx);\n this._renderTextLinesBackground(ctx);\n this._renderTextDecoration(ctx, 'underline');\n this._renderText(ctx);\n this._renderTextDecoration(ctx, 'overline');\n this._renderTextDecoration(ctx, 'linethrough');\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderText: function (ctx) {\n if (this.paintFirst === 'stroke') {\n this._renderTextStroke(ctx);\n this._renderTextFill(ctx);\n } else {\n this._renderTextFill(ctx);\n this._renderTextStroke(ctx);\n }\n },\n\n /**\n * Set the font parameter of the context with the object properties or with charStyle\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Object} [charStyle] object with font style properties\n * @param {String} [charStyle.fontFamily] Font Family\n * @param {Number} [charStyle.fontSize] Font size in pixels. ( without px suffix )\n * @param {String} [charStyle.fontWeight] Font weight\n * @param {String} [charStyle.fontStyle] Font style (italic|normal)\n */\n _setTextStyles: function (ctx, charStyle, forMeasuring) {\n ctx.textBaseline = 'alphabetical';\n if (this.path) {\n switch (this.pathAlign) {\n case 'center':\n ctx.textBaseline = 'middle';\n break;\n case 'ascender':\n ctx.textBaseline = 'top';\n break;\n case 'descender':\n ctx.textBaseline = 'bottom';\n break;\n }\n }\n ctx.font = this._getFontDeclaration(charStyle, forMeasuring);\n },\n\n /**\n * calculate and return the text Width measuring each line.\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @return {Number} Maximum width of fabric.Text object\n */\n calcTextWidth: function () {\n var maxWidth = this.getLineWidth(0);\n\n for (var i = 1, len = this._textLines.length; i < len; i++) {\n var currentLineWidth = this.getLineWidth(i);\n if (currentLineWidth > maxWidth) {\n maxWidth = currentLineWidth;\n }\n }\n return maxWidth;\n },\n\n /**\n * @private\n * @param {String} method Method name (\"fillText\" or \"strokeText\")\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {String} line Text to render\n * @param {Number} left Left position of text\n * @param {Number} top Top position of text\n * @param {Number} lineIndex Index of a line in a text\n */\n _renderTextLine: function (method, ctx, line, left, top, lineIndex) {\n this._renderChars(method, ctx, line, left, top, lineIndex);\n },\n\n /**\n * Renders the text background for lines, taking care of style\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderTextLinesBackground: function (ctx) {\n if (\n !this.textBackgroundColor &&\n !this.styleHas('textBackgroundColor')\n ) {\n return;\n }\n var heightOfLine,\n lineLeftOffset,\n originalFill = ctx.fillStyle,\n line,\n lastColor,\n leftOffset = this._getLeftOffset(),\n lineTopOffset = this._getTopOffset(),\n boxStart = 0,\n boxWidth = 0,\n charBox,\n currentColor,\n path = this.path,\n drawStart;\n\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n heightOfLine = this.getHeightOfLine(i);\n if (\n !this.textBackgroundColor &&\n !this.styleHas('textBackgroundColor', i)\n ) {\n lineTopOffset += heightOfLine;\n continue;\n }\n line = this._textLines[i];\n lineLeftOffset = this._getLineLeftOffset(i);\n boxWidth = 0;\n boxStart = 0;\n lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor');\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n charBox = this.__charBounds[i][j];\n currentColor = this.getValueOfPropertyAt(\n i,\n j,\n 'textBackgroundColor'\n );\n if (path) {\n ctx.save();\n ctx.translate(charBox.renderLeft, charBox.renderTop);\n ctx.rotate(charBox.angle);\n ctx.fillStyle = currentColor;\n currentColor &&\n ctx.fillRect(\n -charBox.width / 2,\n (-heightOfLine / this.lineHeight) *\n (1 - this._fontSizeFraction),\n charBox.width,\n heightOfLine / this.lineHeight\n );\n ctx.restore();\n } else if (currentColor !== lastColor) {\n drawStart = leftOffset + lineLeftOffset + boxStart;\n if (this.direction === 'rtl') {\n drawStart = this.width - drawStart - boxWidth;\n }\n ctx.fillStyle = lastColor;\n lastColor &&\n ctx.fillRect(\n drawStart,\n lineTopOffset,\n boxWidth,\n heightOfLine / this.lineHeight\n );\n boxStart = charBox.left;\n boxWidth = charBox.width;\n lastColor = currentColor;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n }\n if (currentColor && !path) {\n drawStart = leftOffset + lineLeftOffset + boxStart;\n if (this.direction === 'rtl') {\n drawStart = this.width - drawStart - boxWidth;\n }\n ctx.fillStyle = currentColor;\n ctx.fillRect(\n drawStart,\n lineTopOffset,\n boxWidth,\n heightOfLine / this.lineHeight\n );\n }\n lineTopOffset += heightOfLine;\n }\n ctx.fillStyle = originalFill;\n // if there is text background color no\n // other shadows should be casted\n this._removeShadow(ctx);\n },\n\n /**\n * measure and return the width of a single character.\n * possibly overridden to accommodate different measure logic or\n * to hook some external lib for character measurement\n * @private\n * @param {String} _char, char to be measured\n * @param {Object} charStyle style of char to be measured\n * @param {String} [previousChar] previous char\n * @param {Object} [prevCharStyle] style of previous char\n */\n _measureChar: function (_char, charStyle, previousChar, prevCharStyle) {\n // first i try to return from cache\n var fontCache = cache.getFontCache(charStyle),\n fontDeclaration = this._getFontDeclaration(charStyle),\n previousFontDeclaration = this._getFontDeclaration(prevCharStyle),\n couple = previousChar + _char,\n stylesAreEqual = fontDeclaration === previousFontDeclaration,\n width,\n coupleWidth,\n previousWidth,\n fontMultiplier = charStyle.fontSize / this.CACHE_FONT_SIZE,\n kernedWidth;\n\n if (previousChar && fontCache[previousChar] !== undefined) {\n previousWidth = fontCache[previousChar];\n }\n if (fontCache[_char] !== undefined) {\n kernedWidth = width = fontCache[_char];\n }\n if (stylesAreEqual && fontCache[couple] !== undefined) {\n coupleWidth = fontCache[couple];\n kernedWidth = coupleWidth - previousWidth;\n }\n if (\n width === undefined ||\n previousWidth === undefined ||\n coupleWidth === undefined\n ) {\n var ctx = this.getMeasuringContext();\n // send a TRUE to specify measuring font size CACHE_FONT_SIZE\n this._setTextStyles(ctx, charStyle, true);\n }\n if (width === undefined) {\n kernedWidth = width = ctx.measureText(_char).width;\n fontCache[_char] = width;\n }\n if (previousWidth === undefined && stylesAreEqual && previousChar) {\n previousWidth = ctx.measureText(previousChar).width;\n fontCache[previousChar] = previousWidth;\n }\n if (stylesAreEqual && coupleWidth === undefined) {\n // we can measure the kerning couple and subtract the width of the previous character\n coupleWidth = ctx.measureText(couple).width;\n fontCache[couple] = coupleWidth;\n kernedWidth = coupleWidth - previousWidth;\n }\n return {\n width: width * fontMultiplier,\n kernedWidth: kernedWidth * fontMultiplier,\n };\n },\n\n /**\n * Computes height of character at given position\n * @param {Number} line the line index number\n * @param {Number} _char the character index number\n * @return {Number} fontSize of the character\n */\n getHeightOfChar: function (line, _char) {\n return this.getValueOfPropertyAt(line, _char, 'fontSize');\n },\n\n /**\n * measure a text line measuring all characters.\n * @param {Number} lineIndex line number\n * @return {Number} Line width\n */\n measureLine: function (lineIndex) {\n var lineInfo = this._measureLine(lineIndex);\n if (this.charSpacing !== 0) {\n lineInfo.width -= this._getWidthOfCharSpacing();\n }\n if (lineInfo.width < 0) {\n lineInfo.width = 0;\n }\n return lineInfo;\n },\n\n /**\n * measure every grapheme of a line, populating __charBounds\n * @param {Number} lineIndex\n * @return {Object} object.width total width of characters\n * @return {Object} object.widthOfSpaces length of chars that match this._reSpacesAndTabs\n */\n _measureLine: function (lineIndex) {\n var width = 0,\n i,\n grapheme,\n line = this._textLines[lineIndex],\n prevGrapheme,\n graphemeInfo,\n numOfSpaces = 0,\n lineBounds = new Array(line.length),\n positionInPath = 0,\n startingPoint,\n totalPathLength,\n path = this.path,\n reverse = this.pathSide === 'right';\n\n this.__charBounds[lineIndex] = lineBounds;\n for (i = 0; i < line.length; i++) {\n grapheme = line[i];\n graphemeInfo = this._getGraphemeBox(\n grapheme,\n lineIndex,\n i,\n prevGrapheme\n );\n lineBounds[i] = graphemeInfo;\n width += graphemeInfo.kernedWidth;\n prevGrapheme = grapheme;\n }\n // this latest bound box represent the last character of the line\n // to simplify cursor handling in interactive mode.\n lineBounds[i] = {\n left: graphemeInfo ? graphemeInfo.left + graphemeInfo.width : 0,\n width: 0,\n kernedWidth: 0,\n height: this.fontSize,\n };\n if (path) {\n totalPathLength =\n path.segmentsInfo[path.segmentsInfo.length - 1].length;\n startingPoint = fabric.util.getPointOnPath(\n path.path,\n 0,\n path.segmentsInfo\n );\n startingPoint.x += path.pathOffset.x;\n startingPoint.y += path.pathOffset.y;\n switch (this.textAlign) {\n case 'left':\n positionInPath = reverse ? totalPathLength - width : 0;\n break;\n case 'center':\n positionInPath = (totalPathLength - width) / 2;\n break;\n case 'right':\n positionInPath = reverse ? 0 : totalPathLength - width;\n break;\n //todo - add support for justify\n }\n positionInPath += this.pathStartOffset * (reverse ? -1 : 1);\n for (\n i = reverse ? line.length - 1 : 0;\n reverse ? i >= 0 : i < line.length;\n reverse ? i-- : i++\n ) {\n graphemeInfo = lineBounds[i];\n if (positionInPath > totalPathLength) {\n positionInPath %= totalPathLength;\n } else if (positionInPath < 0) {\n positionInPath += totalPathLength;\n }\n // it would probably much faster to send all the grapheme position for a line\n // and calculate path position/angle at once.\n this._setGraphemeOnPath(\n positionInPath,\n graphemeInfo,\n startingPoint\n );\n positionInPath += graphemeInfo.kernedWidth;\n }\n }\n return { width: width, numOfSpaces: numOfSpaces };\n },\n\n /**\n * Calculate the angle and the left,top position of the char that follow a path.\n * It appends it to graphemeInfo to be reused later at rendering\n * @private\n * @param {Number} positionInPath to be measured\n * @param {Object} graphemeInfo current grapheme box information\n * @param {Object} startingPoint position of the point\n */\n _setGraphemeOnPath: function (\n positionInPath,\n graphemeInfo,\n startingPoint\n ) {\n var centerPosition = positionInPath + graphemeInfo.kernedWidth / 2,\n path = this.path;\n\n // we are at currentPositionOnPath. we want to know what point on the path is.\n var info = fabric.util.getPointOnPath(\n path.path,\n centerPosition,\n path.segmentsInfo\n );\n graphemeInfo.renderLeft = info.x - startingPoint.x;\n graphemeInfo.renderTop = info.y - startingPoint.y;\n graphemeInfo.angle =\n info.angle + (this.pathSide === 'right' ? Math.PI : 0);\n },\n\n /**\n * Measure and return the info of a single grapheme.\n * needs the the info of previous graphemes already filled\n * Override to customize measuring\n *\n * @typedef {object} GraphemeBBox\n * @property {number} width\n * @property {number} height\n * @property {number} kernedWidth\n * @property {number} left\n * @property {number} deltaY\n *\n * @param {String} grapheme to be measured\n * @param {Number} lineIndex index of the line where the char is\n * @param {Number} charIndex position in the line\n * @param {String} [prevGrapheme] character preceding the one to be measured\n * @returns {GraphemeBBox} grapheme bbox\n */\n _getGraphemeBox: function (\n grapheme,\n lineIndex,\n charIndex,\n prevGrapheme,\n skipLeft\n ) {\n var style = this.getCompleteStyleDeclaration(lineIndex, charIndex),\n prevStyle = prevGrapheme\n ? this.getCompleteStyleDeclaration(lineIndex, charIndex - 1)\n : {},\n info = this._measureChar(grapheme, style, prevGrapheme, prevStyle),\n kernedWidth = info.kernedWidth,\n width = info.width,\n charSpacing;\n\n if (this.charSpacing !== 0) {\n charSpacing = this._getWidthOfCharSpacing();\n width += charSpacing;\n kernedWidth += charSpacing;\n }\n\n var box = {\n width: width,\n left: 0,\n height: style.fontSize,\n kernedWidth: kernedWidth,\n deltaY: style.deltaY,\n };\n if (charIndex > 0 && !skipLeft) {\n var previousBox = this.__charBounds[lineIndex][charIndex - 1];\n box.left =\n previousBox.left +\n previousBox.width +\n info.kernedWidth -\n info.width;\n }\n return box;\n },\n\n /**\n * Calculate height of line at 'lineIndex'\n * @param {Number} lineIndex index of line to calculate\n * @return {Number}\n */\n getHeightOfLine: function (lineIndex) {\n if (this.__lineHeights[lineIndex]) {\n return this.__lineHeights[lineIndex];\n }\n\n var line = this._textLines[lineIndex],\n // char 0 is measured before the line cycle because it nneds to char\n // emptylines\n maxHeight = this.getHeightOfChar(lineIndex, 0);\n for (var i = 1, len = line.length; i < len; i++) {\n maxHeight = Math.max(this.getHeightOfChar(lineIndex, i), maxHeight);\n }\n\n return (this.__lineHeights[lineIndex] =\n maxHeight * this.lineHeight * this._fontSizeMult);\n },\n\n /**\n * Calculate text box height\n */\n calcTextHeight: function () {\n var lineHeight,\n height = 0;\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n lineHeight = this.getHeightOfLine(i);\n height += i === len - 1 ? lineHeight / this.lineHeight : lineHeight;\n }\n return height;\n },\n\n /**\n * @private\n * @return {Number} Left offset\n */\n _getLeftOffset: function () {\n return this.direction === 'ltr' ? -this.width / 2 : this.width / 2;\n },\n\n /**\n * @private\n * @return {Number} Top offset\n */\n _getTopOffset: function () {\n return -this.height / 2;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {String} method Method name (\"fillText\" or \"strokeText\")\n */\n _renderTextCommon: function (ctx, method) {\n ctx.save();\n var lineHeights = 0,\n left = this._getLeftOffset(),\n top = this._getTopOffset();\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n var heightOfLine = this.getHeightOfLine(i),\n maxHeight = heightOfLine / this.lineHeight,\n leftOffset = this._getLineLeftOffset(i);\n this._renderTextLine(\n method,\n ctx,\n this._textLines[i],\n left + leftOffset,\n top + lineHeights + maxHeight,\n i\n );\n lineHeights += heightOfLine;\n }\n ctx.restore();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderTextFill: function (ctx) {\n if (!this.fill && !this.styleHas('fill')) {\n return;\n }\n\n this._renderTextCommon(ctx, 'fillText');\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderTextStroke: function (ctx) {\n if ((!this.stroke || this.strokeWidth === 0) && this.isEmptyStyles()) {\n return;\n }\n\n if (this.shadow && !this.shadow.affectStroke) {\n this._removeShadow(ctx);\n }\n\n ctx.save();\n this._setLineDash(ctx, this.strokeDashArray);\n ctx.beginPath();\n this._renderTextCommon(ctx, 'strokeText');\n ctx.closePath();\n ctx.restore();\n },\n\n /**\n * @private\n * @param {String} method fillText or strokeText.\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Array} line Content of the line, splitted in an array by grapheme\n * @param {Number} left\n * @param {Number} top\n * @param {Number} lineIndex\n */\n _renderChars: function (method, ctx, line, left, top, lineIndex) {\n // set proper line offset\n var lineHeight = this.getHeightOfLine(lineIndex),\n isJustify = this.textAlign.indexOf('justify') !== -1,\n actualStyle,\n nextStyle,\n charsToRender = '',\n charBox,\n boxWidth = 0,\n timeToRender,\n path = this.path,\n shortCut =\n !isJustify &&\n this.charSpacing === 0 &&\n this.isEmptyStyles(lineIndex) &&\n !path,\n isLtr = this.direction === 'ltr',\n sign = this.direction === 'ltr' ? 1 : -1,\n // this was changed in the PR #7674\n // currentDirection = ctx.canvas.getAttribute('dir');\n drawingLeft,\n currentDirection = ctx.direction;\n ctx.save();\n if (currentDirection !== this.direction) {\n ctx.canvas.setAttribute('dir', isLtr ? 'ltr' : 'rtl');\n ctx.direction = isLtr ? 'ltr' : 'rtl';\n ctx.textAlign = isLtr ? 'left' : 'right';\n }\n top -= (lineHeight * this._fontSizeFraction) / this.lineHeight;\n if (shortCut) {\n // render all the line in one pass without checking\n // drawingLeft = isLtr ? left : left - this.getLineWidth(lineIndex);\n this._renderChar(\n method,\n ctx,\n lineIndex,\n 0,\n line.join(''),\n left,\n top,\n lineHeight\n );\n ctx.restore();\n return;\n }\n for (var i = 0, len = line.length - 1; i <= len; i++) {\n timeToRender = i === len || this.charSpacing || path;\n charsToRender += line[i];\n charBox = this.__charBounds[lineIndex][i];\n if (boxWidth === 0) {\n left += sign * (charBox.kernedWidth - charBox.width);\n boxWidth += charBox.width;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n if (isJustify && !timeToRender) {\n if (this._reSpaceAndTab.test(line[i])) {\n timeToRender = true;\n }\n }\n if (!timeToRender) {\n // if we have charSpacing, we render char by char\n actualStyle =\n actualStyle || this.getCompleteStyleDeclaration(lineIndex, i);\n nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1);\n timeToRender = fabric.util.hasStyleChanged(\n actualStyle,\n nextStyle,\n false\n );\n }\n if (timeToRender) {\n if (path) {\n ctx.save();\n ctx.translate(charBox.renderLeft, charBox.renderTop);\n ctx.rotate(charBox.angle);\n this._renderChar(\n method,\n ctx,\n lineIndex,\n i,\n charsToRender,\n -boxWidth / 2,\n 0,\n lineHeight\n );\n ctx.restore();\n } else {\n drawingLeft = left;\n this._renderChar(\n method,\n ctx,\n lineIndex,\n i,\n charsToRender,\n drawingLeft,\n top,\n lineHeight\n );\n }\n charsToRender = '';\n actualStyle = nextStyle;\n left += sign * boxWidth;\n boxWidth = 0;\n }\n }\n ctx.restore();\n },\n\n /**\n * This function try to patch the missing gradientTransform on canvas gradients.\n * transforming a context to transform the gradient, is going to transform the stroke too.\n * we want to transform the gradient but not the stroke operation, so we create\n * a transformed gradient on a pattern and then we use the pattern instead of the gradient.\n * this method has drawbacks: is slow, is in low resolution, needs a patch for when the size\n * is limited.\n * @private\n * @param {fabric.Gradient} filler a fabric gradient instance\n * @return {CanvasPattern} a pattern to use as fill/stroke style\n */\n _applyPatternGradientTransformText: function (filler) {\n var pCanvas = fabric.util.createCanvasElement(),\n pCtx,\n // TODO: verify compatibility with strokeUniform\n width = this.width + this.strokeWidth,\n height = this.height + this.strokeWidth;\n pCanvas.width = width;\n pCanvas.height = height;\n pCtx = pCanvas.getContext('2d');\n pCtx.beginPath();\n pCtx.moveTo(0, 0);\n pCtx.lineTo(width, 0);\n pCtx.lineTo(width, height);\n pCtx.lineTo(0, height);\n pCtx.closePath();\n pCtx.translate(width / 2, height / 2);\n pCtx.fillStyle = filler.toLive(pCtx);\n this._applyPatternGradientTransform(pCtx, filler);\n pCtx.fill();\n return pCtx.createPattern(pCanvas, 'no-repeat');\n },\n\n handleFiller: function (ctx, property, filler) {\n var offsetX, offsetY;\n if (filler.toLive) {\n if (\n filler.gradientUnits === 'percentage' ||\n filler.gradientTransform ||\n filler.patternTransform\n ) {\n // need to transform gradient in a pattern.\n // this is a slow process. If you are hitting this codepath, and the object\n // is not using caching, you should consider switching it on.\n // we need a canvas as big as the current object caching canvas.\n offsetX = -this.width / 2;\n offsetY = -this.height / 2;\n ctx.translate(offsetX, offsetY);\n ctx[property] = this._applyPatternGradientTransformText(filler);\n return { offsetX: offsetX, offsetY: offsetY };\n } else {\n // is a simple gradient or pattern\n ctx[property] = filler.toLive(ctx, this);\n return this._applyPatternGradientTransform(ctx, filler);\n }\n } else {\n // is a color\n ctx[property] = filler;\n }\n return { offsetX: 0, offsetY: 0 };\n },\n\n _setStrokeStyles: function (ctx, decl) {\n ctx.lineWidth = decl.strokeWidth;\n ctx.lineCap = this.strokeLineCap;\n ctx.lineDashOffset = this.strokeDashOffset;\n ctx.lineJoin = this.strokeLineJoin;\n ctx.miterLimit = this.strokeMiterLimit;\n return this.handleFiller(ctx, 'strokeStyle', decl.stroke);\n },\n\n _setFillStyles: function (ctx, decl) {\n return this.handleFiller(ctx, 'fillStyle', decl.fill);\n },\n\n /**\n * @private\n * @param {String} method\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @param {String} _char\n * @param {Number} left Left coordinate\n * @param {Number} top Top coordinate\n * @param {Number} lineHeight Height of the line\n */\n _renderChar: function (\n method,\n ctx,\n lineIndex,\n charIndex,\n _char,\n left,\n top\n ) {\n var decl = this._getStyleDeclaration(lineIndex, charIndex),\n fullDecl = this.getCompleteStyleDeclaration(lineIndex, charIndex),\n shouldFill = method === 'fillText' && fullDecl.fill,\n shouldStroke =\n method === 'strokeText' && fullDecl.stroke && fullDecl.strokeWidth,\n fillOffsets,\n strokeOffsets;\n\n if (!shouldStroke && !shouldFill) {\n return;\n }\n ctx.save();\n\n shouldFill && (fillOffsets = this._setFillStyles(ctx, fullDecl));\n shouldStroke && (strokeOffsets = this._setStrokeStyles(ctx, fullDecl));\n\n ctx.font = this._getFontDeclaration(fullDecl);\n\n if (decl && decl.textBackgroundColor) {\n this._removeShadow(ctx);\n }\n if (decl && decl.deltaY) {\n top += decl.deltaY;\n }\n shouldFill &&\n ctx.fillText(\n _char,\n left - fillOffsets.offsetX,\n top - fillOffsets.offsetY\n );\n shouldStroke &&\n ctx.strokeText(\n _char,\n left - strokeOffsets.offsetX,\n top - strokeOffsets.offsetY\n );\n ctx.restore();\n },\n\n /**\n * Turns the character into a 'superior figure' (i.e. 'superscript')\n * @param {Number} start selection start\n * @param {Number} end selection end\n * @returns {fabric.Text} thisArg\n * @chainable\n */\n setSuperscript: function (start, end) {\n return this._setScript(start, end, this.superscript);\n },\n\n /**\n * Turns the character into an 'inferior figure' (i.e. 'subscript')\n * @param {Number} start selection start\n * @param {Number} end selection end\n * @returns {fabric.Text} thisArg\n * @chainable\n */\n setSubscript: function (start, end) {\n return this._setScript(start, end, this.subscript);\n },\n\n /**\n * Applies 'schema' at given position\n * @private\n * @param {Number} start selection start\n * @param {Number} end selection end\n * @param {Number} schema\n * @returns {fabric.Text} thisArg\n * @chainable\n */\n _setScript: function (start, end, schema) {\n var loc = this.get2DCursorLocation(start, true),\n fontSize = this.getValueOfPropertyAt(\n loc.lineIndex,\n loc.charIndex,\n 'fontSize'\n ),\n dy = this.getValueOfPropertyAt(\n loc.lineIndex,\n loc.charIndex,\n 'deltaY'\n ),\n style = {\n fontSize: fontSize * schema.size,\n deltaY: dy + fontSize * schema.baseline,\n };\n this.setSelectionStyles(style, start, end);\n return this;\n },\n\n /**\n * @private\n * @param {Number} lineIndex index text line\n * @return {Number} Line left offset\n */\n _getLineLeftOffset: function (lineIndex) {\n var lineWidth = this.getLineWidth(lineIndex),\n lineDiff = this.width - lineWidth,\n textAlign = this.textAlign,\n direction = this.direction,\n isEndOfWrapping,\n leftOffset = 0,\n isEndOfWrapping = this.isEndOfWrapping(lineIndex);\n if (\n textAlign === 'justify' ||\n (textAlign === 'justify-center' && !isEndOfWrapping) ||\n (textAlign === 'justify-right' && !isEndOfWrapping) ||\n (textAlign === 'justify-left' && !isEndOfWrapping)\n ) {\n return 0;\n }\n if (textAlign === 'center') {\n leftOffset = lineDiff / 2;\n }\n if (textAlign === 'right') {\n leftOffset = lineDiff;\n }\n if (textAlign === 'justify-center') {\n leftOffset = lineDiff / 2;\n }\n if (textAlign === 'justify-right') {\n leftOffset = lineDiff;\n }\n if (direction === 'rtl') {\n if (\n textAlign === 'right' ||\n textAlign === 'justify' ||\n textAlign === 'justify-right'\n ) {\n leftOffset = 0;\n } else if (textAlign === 'left' || textAlign === 'justify-left') {\n leftOffset = -lineDiff;\n } else if (textAlign === 'center' || textAlign === 'justify-center') {\n leftOffset = -lineDiff / 2;\n }\n }\n return leftOffset;\n },\n\n /**\n * @private\n */\n _clearCache: function () {\n this.__lineWidths = [];\n this.__lineHeights = [];\n this.__charBounds = [];\n },\n\n /**\n * @private\n */\n _shouldClearDimensionCache: function () {\n var shouldClear = this._forceClearCache;\n shouldClear ||\n (shouldClear = this.hasStateChanged('_dimensionAffectingProps'));\n if (shouldClear) {\n this.dirty = true;\n this._forceClearCache = false;\n }\n return shouldClear;\n },\n\n /**\n * Measure a single line given its index. Used to calculate the initial\n * text bounding box. The values are calculated and stored in __lineWidths cache.\n * @private\n * @param {Number} lineIndex line number\n * @return {Number} Line width\n */\n getLineWidth: function (lineIndex) {\n if (this.__lineWidths[lineIndex] !== undefined) {\n return this.__lineWidths[lineIndex];\n }\n\n var lineInfo = this.measureLine(lineIndex);\n var width = lineInfo.width;\n this.__lineWidths[lineIndex] = width;\n return width;\n },\n\n _getWidthOfCharSpacing: function () {\n if (this.charSpacing !== 0) {\n return (this.fontSize * this.charSpacing) / 1000;\n }\n return 0;\n },\n\n /**\n * Retrieves the value of property at given character position\n * @param {Number} lineIndex the line number\n * @param {Number} charIndex the character number\n * @param {String} property the property name\n * @returns the value of 'property'\n */\n getValueOfPropertyAt: function (lineIndex, charIndex, property) {\n var charStyle = this._getStyleDeclaration(lineIndex, charIndex);\n if (charStyle && typeof charStyle[property] !== 'undefined') {\n return charStyle[property];\n }\n return this[property];\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderTextDecoration: function (ctx, type) {\n if (!this[type] && !this.styleHas(type)) {\n return;\n }\n var heightOfLine,\n size,\n _size,\n lineLeftOffset,\n dy,\n _dy,\n line,\n lastDecoration,\n leftOffset = this._getLeftOffset(),\n topOffset = this._getTopOffset(),\n top,\n boxStart,\n boxWidth,\n charBox,\n currentDecoration,\n maxHeight,\n currentFill,\n lastFill,\n path = this.path,\n charSpacing = this._getWidthOfCharSpacing(),\n offsetY = this.offsets[type];\n\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n heightOfLine = this.getHeightOfLine(i);\n if (!this[type] && !this.styleHas(type, i)) {\n topOffset += heightOfLine;\n continue;\n }\n line = this._textLines[i];\n maxHeight = heightOfLine / this.lineHeight;\n lineLeftOffset = this._getLineLeftOffset(i);\n boxStart = 0;\n boxWidth = 0;\n lastDecoration = this.getValueOfPropertyAt(i, 0, type);\n lastFill = this.getValueOfPropertyAt(i, 0, 'fill');\n top = topOffset + maxHeight * (1 - this._fontSizeFraction);\n size = this.getHeightOfChar(i, 0);\n dy = this.getValueOfPropertyAt(i, 0, 'deltaY');\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n charBox = this.__charBounds[i][j];\n currentDecoration = this.getValueOfPropertyAt(i, j, type);\n currentFill = this.getValueOfPropertyAt(i, j, 'fill');\n _size = this.getHeightOfChar(i, j);\n _dy = this.getValueOfPropertyAt(i, j, 'deltaY');\n if (path && currentDecoration && currentFill) {\n ctx.save();\n ctx.fillStyle = lastFill;\n ctx.translate(charBox.renderLeft, charBox.renderTop);\n ctx.rotate(charBox.angle);\n ctx.fillRect(\n -charBox.kernedWidth / 2,\n offsetY * _size + _dy,\n charBox.kernedWidth,\n this.fontSize / 15\n );\n ctx.restore();\n } else if (\n (currentDecoration !== lastDecoration ||\n currentFill !== lastFill ||\n _size !== size ||\n _dy !== dy) &&\n boxWidth > 0\n ) {\n var drawStart = leftOffset + lineLeftOffset + boxStart;\n if (this.direction === 'rtl') {\n drawStart = this.width - drawStart - boxWidth;\n }\n if (lastDecoration && lastFill) {\n ctx.fillStyle = lastFill;\n ctx.fillRect(\n drawStart,\n top + offsetY * size + dy,\n boxWidth,\n this.fontSize / 15\n );\n }\n boxStart = charBox.left;\n boxWidth = charBox.width;\n lastDecoration = currentDecoration;\n lastFill = currentFill;\n size = _size;\n dy = _dy;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n }\n var drawStart = leftOffset + lineLeftOffset + boxStart;\n if (this.direction === 'rtl') {\n drawStart = this.width - drawStart - boxWidth;\n }\n ctx.fillStyle = currentFill;\n currentDecoration &&\n currentFill &&\n ctx.fillRect(\n drawStart,\n top + offsetY * size + dy,\n boxWidth - charSpacing,\n this.fontSize / 15\n );\n topOffset += heightOfLine;\n }\n // if there is text background color no\n // other shadows should be casted\n this._removeShadow(ctx);\n },\n\n /**\n * return font declaration string for canvas context\n * @param {Object} [styleObject] object\n * @returns {String} font declaration formatted for canvas context.\n */\n _getFontDeclaration: function (styleObject, forMeasuring) {\n var style = styleObject || this,\n family = this.fontFamily,\n fontIsGeneric =\n fabric.Text.genericFonts.indexOf(family.toLowerCase()) > -1;\n var fontFamily =\n family === undefined ||\n family.indexOf(\"'\") > -1 ||\n family.indexOf(',') > -1 ||\n family.indexOf('\"') > -1 ||\n fontIsGeneric\n ? style.fontFamily\n : '\"' + style.fontFamily + '\"';\n return [\n // node-canvas needs \"weight style\", while browsers need \"style weight\"\n // verify if this can be fixed in JSDOM\n fabric.isLikelyNode ? style.fontWeight : style.fontStyle,\n fabric.isLikelyNode ? style.fontStyle : style.fontWeight,\n forMeasuring ? this.CACHE_FONT_SIZE + 'px' : style.fontSize + 'px',\n fontFamily,\n ].join(' ');\n },\n\n /**\n * Renders text instance on a specified context\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n render: function (ctx) {\n // do not render if object is not visible\n if (!this.visible) {\n return;\n }\n if (\n this.canvas &&\n this.canvas.skipOffscreen &&\n !this.group &&\n !this.isOnScreen()\n ) {\n return;\n }\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n }\n this.callSuper('render', ctx);\n },\n\n /**\n * Override this method to customize grapheme splitting\n * @param {string} value\n * @returns {string[]} array of graphemes\n */\n graphemeSplit: function (value) {\n return fabric.util.string.graphemeSplit(value);\n },\n\n /**\n * Returns the text as an array of lines.\n * @param {String} text text to split\n * @returns {Array} Lines in the text\n */\n _splitTextIntoLines: function (text) {\n var lines = text.split(this._reNewline),\n newLines = new Array(lines.length),\n newLine = ['\\n'],\n newText = [];\n for (var i = 0; i < lines.length; i++) {\n newLines[i] = this.graphemeSplit(lines[i]);\n newText = newText.concat(newLines[i], newLine);\n }\n newText.pop();\n return {\n _unwrappedLines: newLines,\n lines: lines,\n graphemeText: newText,\n graphemeLines: newLines,\n };\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n var allProperties = additionalProps.concat(propertiesToInclude);\n var obj = this.callSuper('toObject', allProperties);\n obj.styles = fabric.util.stylesToArray(this.styles, this.text);\n if (obj.path) {\n obj.path = this.path.toObject();\n }\n return obj;\n },\n\n /**\n * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`.\n * @param {String|Object} key Property name or object (if object, iterate over the object properties)\n * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one)\n * @return {fabric.Object} thisArg\n * @chainable\n */\n set: function (key, value) {\n this.callSuper('set', key, value);\n var needsDims = false;\n var isAddingPath = false;\n if (typeof key === 'object') {\n for (var _key in key) {\n if (_key === 'path') {\n this.setPathInfo();\n }\n needsDims =\n needsDims || this._dimensionAffectingProps.indexOf(_key) !== -1;\n isAddingPath = isAddingPath || _key === 'path';\n }\n } else {\n needsDims = this._dimensionAffectingProps.indexOf(key) !== -1;\n isAddingPath = key === 'path';\n }\n if (isAddingPath) {\n this.setPathInfo();\n }\n if (needsDims) {\n this.initDimensions();\n this.setCoords();\n }\n return this;\n },\n\n /**\n * Returns complexity of an instance\n * @return {Number} complexity\n */\n complexity: function () {\n return 1;\n },\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Text.fromElement})\n * @static\n * @memberOf fabric.Text\n * @see: http://www.w3.org/TR/SVG/text.html#TextElement\n */\n fabric.Text.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'x y dx dy font-family font-style font-weight font-size letter-spacing text-decoration text-anchor'.split(\n ' '\n )\n );\n\n /**\n * Returns fabric.Text instance from an SVG element (not yet implemented)\n * @static\n * @memberOf fabric.Text\n * @param {SVGElement} element Element to parse\n * @param {Function} callback callback function invoked after parsing\n * @param {Object} [options] Options object\n */\n fabric.Text.fromElement = function (element, callback, options) {\n if (!element) {\n return callback(null);\n }\n\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Text.ATTRIBUTE_NAMES\n ),\n parsedAnchor = parsedAttributes.textAnchor || 'left';\n options = Object.assign({}, options, parsedAttributes);\n\n options.top = options.top || 0;\n options.left = options.left || 0;\n if (parsedAttributes.textDecoration) {\n var textDecoration = parsedAttributes.textDecoration;\n if (textDecoration.indexOf('underline') !== -1) {\n options.underline = true;\n }\n if (textDecoration.indexOf('overline') !== -1) {\n options.overline = true;\n }\n if (textDecoration.indexOf('line-through') !== -1) {\n options.linethrough = true;\n }\n delete options.textDecoration;\n }\n if ('dx' in parsedAttributes) {\n options.left += parsedAttributes.dx;\n }\n if ('dy' in parsedAttributes) {\n options.top += parsedAttributes.dy;\n }\n if (!('fontSize' in options)) {\n options.fontSize = DEFAULT_SVG_FONT_SIZE;\n }\n\n var textContent = '';\n\n // The XML is not properly parsed in IE9 so a workaround to get\n // textContent is through firstChild.data. Another workaround would be\n // to convert XML loaded from a file to be converted using DOMParser (same way loadSVGFromString() does)\n if (!('textContent' in element)) {\n if ('firstChild' in element && element.firstChild !== null) {\n if ('data' in element.firstChild && element.firstChild.data !== null) {\n textContent = element.firstChild.data;\n }\n }\n } else {\n textContent = element.textContent;\n }\n\n textContent = textContent\n .replace(/^\\s+|\\s+$|\\n+/g, '')\n .replace(/\\s+/g, ' ');\n var originalStrokeWidth = options.strokeWidth;\n options.strokeWidth = 0;\n\n var text = new fabric.Text(textContent, options),\n textHeightScaleFactor = text.getScaledHeight() / text.height,\n lineHeightDiff =\n (text.height + text.strokeWidth) * text.lineHeight - text.height,\n scaledDiff = lineHeightDiff * textHeightScaleFactor,\n textHeight = text.getScaledHeight() + scaledDiff,\n offX = 0;\n /*\n Adjust positioning:\n x/y attributes in SVG correspond to the bottom-left corner of text bounding box\n fabric output by default at top, left.\n */\n if (parsedAnchor === 'center') {\n offX = text.getScaledWidth() / 2;\n }\n if (parsedAnchor === 'right') {\n offX = text.getScaledWidth();\n }\n text.set({\n left: text.left - offX,\n top:\n text.top -\n (textHeight - text.fontSize * (0.07 + text._fontSizeFraction)) /\n text.lineHeight,\n strokeWidth:\n typeof originalStrokeWidth !== 'undefined' ? originalStrokeWidth : 1,\n });\n callback(text);\n };\n /* _FROM_SVG_END_ */\n\n /**\n * Returns fabric.Text instance from an object representation\n * @static\n * @memberOf fabric.Text\n * @param {Object} object plain js Object to create an instance from\n * @returns {Promise}\n */\n fabric.Text.fromObject = function (object) {\n var styles = fabric.util.stylesFromArray(object.styles, object.text);\n //copy object to prevent mutation\n var objCopy = Object.assign({}, object, { styles: styles });\n return fabric.Object._fromObject(fabric.Text, objCopy, {\n extraParam: 'text',\n });\n };\n\n fabric.Text.genericFonts = [\n 'sans-serif',\n 'serif',\n 'cursive',\n 'fantasy',\n 'monospace',\n ];\n\n fabric.util.createAccessors && fabric.util.createAccessors(fabric.Text);\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.Text.prototype,\n /** @lends fabric.Text.prototype */ {\n /**\n * Returns true if object has no styling or no styling in a line\n * @param {Number} lineIndex , lineIndex is on wrapped lines.\n * @return {Boolean}\n */\n isEmptyStyles: function (lineIndex) {\n if (!this.styles) {\n return true;\n }\n if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) {\n return true;\n }\n var obj =\n typeof lineIndex === 'undefined'\n ? this.styles\n : { line: this.styles[lineIndex] };\n for (var p1 in obj) {\n for (var p2 in obj[p1]) {\n // eslint-disable-next-line no-unused-vars\n for (var p3 in obj[p1][p2]) {\n return false;\n }\n }\n }\n return true;\n },\n\n /**\n * Returns true if object has a style property or has it ina specified line\n * This function is used to detect if a text will use a particular property or not.\n * @param {String} property to check for\n * @param {Number} lineIndex to check the style on\n * @return {Boolean}\n */\n styleHas: function (property, lineIndex) {\n if (!this.styles || !property || property === '') {\n return false;\n }\n if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) {\n return false;\n }\n var obj =\n typeof lineIndex === 'undefined'\n ? this.styles\n : { 0: this.styles[lineIndex] };\n // eslint-disable-next-line\n for (var p1 in obj) {\n // eslint-disable-next-line\n for (var p2 in obj[p1]) {\n if (typeof obj[p1][p2][property] !== 'undefined') {\n return true;\n }\n }\n }\n return false;\n },\n\n /**\n * Check if characters in a text have a value for a property\n * whose value matches the textbox's value for that property. If so,\n * the character-level property is deleted. If the character\n * has no other properties, then it is also deleted. Finally,\n * if the line containing that character has no other characters\n * then it also is deleted.\n *\n * @param {string} property The property to compare between characters and text.\n */\n cleanStyle: function (property) {\n if (!this.styles || !property || property === '') {\n return false;\n }\n var obj = this.styles,\n stylesCount = 0,\n letterCount,\n stylePropertyValue,\n allStyleObjectPropertiesMatch = true,\n graphemeCount = 0,\n styleObject;\n // eslint-disable-next-line\n for (var p1 in obj) {\n letterCount = 0;\n // eslint-disable-next-line\n for (var p2 in obj[p1]) {\n var styleObject = obj[p1][p2],\n stylePropertyHasBeenSet = styleObject.hasOwnProperty(property);\n\n stylesCount++;\n\n if (stylePropertyHasBeenSet) {\n if (!stylePropertyValue) {\n stylePropertyValue = styleObject[property];\n } else if (styleObject[property] !== stylePropertyValue) {\n allStyleObjectPropertiesMatch = false;\n }\n\n if (styleObject[property] === this[property]) {\n delete styleObject[property];\n }\n } else {\n allStyleObjectPropertiesMatch = false;\n }\n\n if (Object.keys(styleObject).length !== 0) {\n letterCount++;\n } else {\n delete obj[p1][p2];\n }\n }\n\n if (letterCount === 0) {\n delete obj[p1];\n }\n }\n // if every grapheme has the same style set then\n // delete those styles and set it on the parent\n for (var i = 0; i < this._textLines.length; i++) {\n graphemeCount += this._textLines[i].length;\n }\n if (allStyleObjectPropertiesMatch && stylesCount === graphemeCount) {\n this[property] = stylePropertyValue;\n this.removeStyle(property);\n }\n },\n\n /**\n * Remove a style property or properties from all individual character styles\n * in a text object. Deletes the character style object if it contains no other style\n * props. Deletes a line style object if it contains no other character styles.\n *\n * @param {String} props The property to remove from character styles.\n */\n removeStyle: function (property) {\n if (!this.styles || !property || property === '') {\n return;\n }\n var obj = this.styles,\n line,\n lineNum,\n charNum;\n for (lineNum in obj) {\n line = obj[lineNum];\n for (charNum in line) {\n delete line[charNum][property];\n if (Object.keys(line[charNum]).length === 0) {\n delete line[charNum];\n }\n }\n if (Object.keys(line).length === 0) {\n delete obj[lineNum];\n }\n }\n },\n\n /**\n * @private\n */\n _extendStyles: function (index, styles) {\n var loc = this.get2DCursorLocation(index);\n\n if (!this._getLineStyle(loc.lineIndex)) {\n this._setLineStyle(loc.lineIndex);\n }\n\n if (!this._getStyleDeclaration(loc.lineIndex, loc.charIndex)) {\n this._setStyleDeclaration(loc.lineIndex, loc.charIndex, {});\n }\n\n fabric.util.object.extend(\n this._getStyleDeclaration(loc.lineIndex, loc.charIndex),\n styles\n );\n },\n\n /**\n * Returns 2d representation (lineIndex and charIndex) of cursor (or selection start)\n * @param {Number} [selectionStart] Optional index. When not given, current selectionStart is used.\n * @param {Boolean} [skipWrapping] consider the location for unwrapped lines. useful to manage styles.\n */\n get2DCursorLocation: function (selectionStart, skipWrapping) {\n if (typeof selectionStart === 'undefined') {\n selectionStart = this.selectionStart;\n }\n var lines = skipWrapping ? this._unwrappedTextLines : this._textLines,\n len = lines.length;\n for (var i = 0; i < len; i++) {\n if (selectionStart <= lines[i].length) {\n return {\n lineIndex: i,\n charIndex: selectionStart,\n };\n }\n selectionStart -= lines[i].length + this.missingNewlineOffset(i);\n }\n return {\n lineIndex: i - 1,\n charIndex:\n lines[i - 1].length < selectionStart\n ? lines[i - 1].length\n : selectionStart,\n };\n },\n\n /**\n * Gets style of a current selection/cursor (at the start position)\n * if startIndex or endIndex are not provided, selectionStart or selectionEnd will be used.\n * @param {Number} [startIndex] Start index to get styles at\n * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1\n * @param {Boolean} [complete] get full style or not\n * @return {Array} styles an array with one, zero or more Style objects\n */\n getSelectionStyles: function (startIndex, endIndex, complete) {\n if (typeof startIndex === 'undefined') {\n startIndex = this.selectionStart || 0;\n }\n if (typeof endIndex === 'undefined') {\n endIndex = this.selectionEnd || startIndex;\n }\n var styles = [];\n for (var i = startIndex; i < endIndex; i++) {\n styles.push(this.getStyleAtPosition(i, complete));\n }\n return styles;\n },\n\n /**\n * Gets style of a current selection/cursor position\n * @param {Number} position to get styles at\n * @param {Boolean} [complete] full style if true\n * @return {Object} style Style object at a specified index\n * @private\n */\n getStyleAtPosition: function (position, complete) {\n var loc = this.get2DCursorLocation(position),\n style = complete\n ? this.getCompleteStyleDeclaration(loc.lineIndex, loc.charIndex)\n : this._getStyleDeclaration(loc.lineIndex, loc.charIndex);\n return style || {};\n },\n\n /**\n * Sets style of a current selection, if no selection exist, do not set anything.\n * @param {Object} [styles] Styles object\n * @param {Number} [startIndex] Start index to get styles at\n * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1\n * @return {fabric.IText} thisArg\n * @chainable\n */\n setSelectionStyles: function (styles, startIndex, endIndex) {\n if (typeof startIndex === 'undefined') {\n startIndex = this.selectionStart || 0;\n }\n if (typeof endIndex === 'undefined') {\n endIndex = this.selectionEnd || startIndex;\n }\n for (var i = startIndex; i < endIndex; i++) {\n this._extendStyles(i, styles);\n }\n /* not included in _extendStyles to avoid clearing cache more than once */\n this._forceClearCache = true;\n return this;\n },\n\n /**\n * get the reference, not a clone, of the style object for a given character\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @return {Object} style object\n */\n _getStyleDeclaration: function (lineIndex, charIndex) {\n var lineStyle = this.styles && this.styles[lineIndex];\n if (!lineStyle) {\n return null;\n }\n return lineStyle[charIndex];\n },\n\n /**\n * return a new object that contains all the style property for a character\n * the object returned is newly created\n * @param {Number} lineIndex of the line where the character is\n * @param {Number} charIndex position of the character on the line\n * @return {Object} style object\n */\n getCompleteStyleDeclaration: function (lineIndex, charIndex) {\n var style = this._getStyleDeclaration(lineIndex, charIndex) || {},\n styleObject = {},\n prop;\n for (var i = 0; i < this._styleProperties.length; i++) {\n prop = this._styleProperties[i];\n styleObject[prop] =\n typeof style[prop] === 'undefined' ? this[prop] : style[prop];\n }\n return styleObject;\n },\n\n /**\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @param {Object} style\n * @private\n */\n _setStyleDeclaration: function (lineIndex, charIndex, style) {\n this.styles[lineIndex][charIndex] = style;\n },\n\n /**\n *\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @private\n */\n _deleteStyleDeclaration: function (lineIndex, charIndex) {\n delete this.styles[lineIndex][charIndex];\n },\n\n /**\n * @param {Number} lineIndex\n * @return {Boolean} if the line exists or not\n * @private\n */\n _getLineStyle: function (lineIndex) {\n return !!this.styles[lineIndex];\n },\n\n /**\n * Set the line style to an empty object so that is initialized\n * @param {Number} lineIndex\n * @private\n */\n _setLineStyle: function (lineIndex) {\n this.styles[lineIndex] = {};\n },\n\n /**\n * @param {Number} lineIndex\n * @private\n */\n _deleteLineStyle: function (lineIndex) {\n delete this.styles[lineIndex];\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n /**\n * IText class (introduced in v1.4) Events are also fired with \"text:\"\n * prefix when observing canvas.\n * @class fabric.IText\n * @extends fabric.Text\n * @mixes fabric.Observable\n *\n * @fires changed\n * @fires selection:changed\n * @fires editing:entered\n * @fires editing:exited\n * @fires dragstart\n * @fires drag drag event firing on the drag source\n * @fires dragend\n * @fires copy\n * @fires cut\n * @fires paste\n *\n * @return {fabric.IText} thisArg\n * @see {@link fabric.IText#initialize} for constructor definition\n *\n *

Supported key combinations:

\n * 
\n   *   Move cursor:                    left, right, up, down\n   *   Select character:               shift + left, shift + right\n   *   Select text vertically:         shift + up, shift + down\n   *   Move cursor by word:            alt + left, alt + right\n   *   Select words:                   shift + alt + left, shift + alt + right\n   *   Move cursor to line start/end:  cmd + left, cmd + right or home, end\n   *   Select till start/end of line:  cmd + shift + left, cmd + shift + right or shift + home, shift + end\n   *   Jump to start/end of text:      cmd + up, cmd + down\n   *   Select till start/end of text:  cmd + shift + up, cmd + shift + down or shift + pgUp, shift + pgDown\n   *   Delete character:               backspace\n   *   Delete word:                    alt + backspace\n   *   Delete line:                    cmd + backspace\n   *   Forward delete:                 delete\n   *   Copy text:                      ctrl/cmd + c\n   *   Paste text:                     ctrl/cmd + v\n   *   Cut text:                       ctrl/cmd + x\n   *   Select entire text:             ctrl/cmd + a\n   *   Quit editing                    tab or esc\n   *
\n *\n *

Supported mouse/touch combination

\n * 
\n   *   Position cursor:                click/touch\n   *   Create selection:               click/touch & drag\n   *   Create selection:               click & shift + click\n   *   Select word:                    double click\n   *   Select line:                    triple click\n   *
\n */\n fabric.IText = fabric.util.createClass(\n fabric.Text,\n fabric.Observable,\n /** @lends fabric.IText.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'i-text',\n\n /**\n * Index where text selection starts (or where cursor is when there is no selection)\n * @type Number\n * @default\n */\n selectionStart: 0,\n\n /**\n * Index where text selection ends\n * @type Number\n * @default\n */\n selectionEnd: 0,\n\n /**\n * Color of text selection\n * @type String\n * @default\n */\n selectionColor: 'rgba(17,119,255,0.3)',\n\n /**\n * Indicates whether text is in editing mode\n * @type Boolean\n * @default\n */\n isEditing: false,\n\n /**\n * Indicates whether a text can be edited\n * @type Boolean\n * @default\n */\n editable: true,\n\n /**\n * Border color of text object while it's in editing mode\n * @type String\n * @default\n */\n editingBorderColor: 'rgba(102,153,255,0.25)',\n\n /**\n * Width of cursor (in px)\n * @type Number\n * @default\n */\n cursorWidth: 2,\n\n /**\n * Color of text cursor color in editing mode.\n * if not set (default) will take color from the text.\n * if set to a color value that fabric can understand, it will\n * be used instead of the color of the text at the current position.\n * @type String\n * @default\n */\n cursorColor: '',\n\n /**\n * Delay between cursor blink (in ms)\n * @type Number\n * @default\n */\n cursorDelay: 1000,\n\n /**\n * Duration of cursor fadein (in ms)\n * @type Number\n * @default\n */\n cursorDuration: 600,\n\n /**\n * Indicates whether internal text char widths can be cached\n * @type Boolean\n * @default\n */\n caching: true,\n\n /**\n * DOM container to append the hiddenTextarea.\n * An alternative to attaching to the document.body.\n * Useful to reduce laggish redraw of the full document.body tree and\n * also with modals event capturing that won't let the textarea take focus.\n * @type HTMLElement\n * @default\n */\n hiddenTextareaContainer: null,\n\n /**\n * @private\n */\n _reSpace: /\\s|\\n/,\n\n /**\n * @private\n */\n _currentCursorOpacity: 1,\n\n /**\n * @private\n */\n _selectionDirection: null,\n\n /**\n * Helps determining when the text is in composition, so that the cursor\n * rendering is altered.\n */\n inCompositionMode: false,\n\n /**\n * Constructor\n * @param {String} text Text string\n * @param {Object} [options] Options object\n * @return {fabric.IText} thisArg\n */\n initialize: function (text, options) {\n this.callSuper('initialize', text, options);\n this.initBehavior();\n },\n\n /**\n * While editing handle differently\n * @private\n * @param {string} key\n * @param {*} value\n */\n _set: function (key, value) {\n if (this.isEditing && this._savedProps && key in this._savedProps) {\n this._savedProps[key] = value;\n } else {\n this.callSuper('_set', key, value);\n }\n },\n\n /**\n * Sets selection start (left boundary of a selection)\n * @param {Number} index Index to set selection start to\n */\n setSelectionStart: function (index) {\n index = Math.max(index, 0);\n this._updateAndFire('selectionStart', index);\n },\n\n /**\n * Sets selection end (right boundary of a selection)\n * @param {Number} index Index to set selection end to\n */\n setSelectionEnd: function (index) {\n index = Math.min(index, this.text.length);\n this._updateAndFire('selectionEnd', index);\n },\n\n /**\n * @private\n * @param {String} property 'selectionStart' or 'selectionEnd'\n * @param {Number} index new position of property\n */\n _updateAndFire: function (property, index) {\n if (this[property] !== index) {\n this._fireSelectionChanged();\n this[property] = index;\n }\n this._updateTextarea();\n },\n\n /**\n * Fires the even of selection changed\n * @private\n */\n _fireSelectionChanged: function () {\n this.fire('selection:changed');\n this.canvas &&\n this.canvas.fire('text:selection:changed', { target: this });\n },\n\n /**\n * Initialize text dimensions. Render all text on given context\n * or on a offscreen canvas to get the text width with measureText.\n * Updates this.width and this.height with the proper values.\n * Does not return dimensions.\n * @private\n */\n initDimensions: function () {\n this.isEditing && this.initDelayedCursor();\n this.clearContextTop();\n this.callSuper('initDimensions');\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n render: function (ctx) {\n this.clearContextTop();\n this.callSuper('render', ctx);\n // clear the cursorOffsetCache, so we ensure to calculate once per renderCursor\n // the correct position but not at every cursor animation.\n this.cursorOffsetCache = {};\n this.renderCursorOrSelection();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n this.callSuper('_render', ctx);\n },\n\n /**\n * Renders cursor or selection (depending on what exists)\n * it does on the contextTop. If contextTop is not available, do nothing.\n */\n renderCursorOrSelection: function () {\n if (!this.isEditing) {\n return;\n }\n var ctx = this.clearContextTop(true);\n if (!ctx) {\n return;\n }\n var boundaries = this._getCursorBoundaries();\n if (this.selectionStart === this.selectionEnd) {\n this.renderCursor(ctx, boundaries);\n } else {\n this.renderSelection(ctx, boundaries);\n }\n ctx.restore();\n },\n\n /**\n * Renders cursor on context Top, outside the animation cycle, on request\n * Used for the drag/drop effect.\n * If contextTop is not available, do nothing.\n */\n renderCursorAt: function (selectionStart) {\n var boundaries = this._getCursorBoundaries(selectionStart, true);\n this._renderCursor(this.canvas.contextTop, boundaries, selectionStart);\n },\n\n /**\n * Returns cursor boundaries (left, top, leftOffset, topOffset)\n * left/top are left/top of entire text box\n * leftOffset/topOffset are offset from that left/top point of a text box\n * @private\n * @param {number} [index] index from start\n * @param {boolean} [skipCaching]\n */\n _getCursorBoundaries: function (index, skipCaching) {\n if (typeof index === 'undefined') {\n index = this.selectionStart;\n }\n var left = this._getLeftOffset(),\n top = this._getTopOffset(),\n offsets = this._getCursorBoundariesOffsets(index, skipCaching);\n return {\n left: left,\n top: top,\n leftOffset: offsets.left,\n topOffset: offsets.top,\n };\n },\n\n /**\n * Caches and returns cursor left/top offset relative to instance's center point\n * @private\n * @param {number} index index from start\n * @param {boolean} [skipCaching]\n */\n _getCursorBoundariesOffsets: function (index, skipCaching) {\n if (skipCaching) {\n return this.__getCursorBoundariesOffsets(index);\n }\n if (this.cursorOffsetCache && 'top' in this.cursorOffsetCache) {\n return this.cursorOffsetCache;\n }\n return (this.cursorOffsetCache =\n this.__getCursorBoundariesOffsets(index));\n },\n\n /**\n * Calcualtes cursor left/top offset relative to instance's center point\n * @private\n * @param {number} index index from start\n */\n __getCursorBoundariesOffsets: function (index) {\n var lineLeftOffset,\n lineIndex,\n charIndex,\n topOffset = 0,\n leftOffset = 0,\n boundaries,\n cursorPosition = this.get2DCursorLocation(index);\n charIndex = cursorPosition.charIndex;\n lineIndex = cursorPosition.lineIndex;\n for (var i = 0; i < lineIndex; i++) {\n topOffset += this.getHeightOfLine(i);\n }\n lineLeftOffset = this._getLineLeftOffset(lineIndex);\n var bound = this.__charBounds[lineIndex][charIndex];\n bound && (leftOffset = bound.left);\n if (\n this.charSpacing !== 0 &&\n charIndex === this._textLines[lineIndex].length\n ) {\n leftOffset -= this._getWidthOfCharSpacing();\n }\n boundaries = {\n top: topOffset,\n left: lineLeftOffset + (leftOffset > 0 ? leftOffset : 0),\n };\n if (this.direction === 'rtl') {\n if (\n this.textAlign === 'right' ||\n this.textAlign === 'justify' ||\n this.textAlign === 'justify-right'\n ) {\n boundaries.left *= -1;\n } else if (\n this.textAlign === 'left' ||\n this.textAlign === 'justify-left'\n ) {\n boundaries.left =\n lineLeftOffset - (leftOffset > 0 ? leftOffset : 0);\n } else if (\n this.textAlign === 'center' ||\n this.textAlign === 'justify-center'\n ) {\n boundaries.left =\n lineLeftOffset - (leftOffset > 0 ? leftOffset : 0);\n }\n }\n return boundaries;\n },\n\n /**\n * Renders cursor\n * @param {Object} boundaries\n * @param {CanvasRenderingContext2D} ctx transformed context to draw on\n */\n renderCursor: function (ctx, boundaries) {\n this._renderCursor(ctx, boundaries, this.selectionStart);\n },\n\n _renderCursor: function (ctx, boundaries, selectionStart) {\n var cursorLocation = this.get2DCursorLocation(selectionStart),\n lineIndex = cursorLocation.lineIndex,\n charIndex =\n cursorLocation.charIndex > 0 ? cursorLocation.charIndex - 1 : 0,\n charHeight = this.getValueOfPropertyAt(\n lineIndex,\n charIndex,\n 'fontSize'\n ),\n multiplier = this.scaleX * this.canvas.getZoom(),\n cursorWidth = this.cursorWidth / multiplier,\n topOffset = boundaries.topOffset,\n dy = this.getValueOfPropertyAt(lineIndex, charIndex, 'deltaY');\n topOffset +=\n ((1 - this._fontSizeFraction) * this.getHeightOfLine(lineIndex)) /\n this.lineHeight -\n charHeight * (1 - this._fontSizeFraction);\n\n if (this.inCompositionMode) {\n // TODO: investigate why there isn't a return inside the if,\n // and why can't happe top of the function\n this.renderSelection(ctx, boundaries);\n }\n ctx.fillStyle =\n this.cursorColor ||\n this.getValueOfPropertyAt(lineIndex, charIndex, 'fill');\n ctx.globalAlpha = this.__isMousedown ? 1 : this._currentCursorOpacity;\n ctx.fillRect(\n boundaries.left + boundaries.leftOffset - cursorWidth / 2,\n topOffset + boundaries.top + dy,\n cursorWidth,\n charHeight\n );\n },\n\n /**\n * Renders text selection\n * @param {Object} boundaries Object with left/top/leftOffset/topOffset\n * @param {CanvasRenderingContext2D} ctx transformed context to draw on\n */\n renderSelection: function (ctx, boundaries) {\n var selection = {\n selectionStart: this.inCompositionMode\n ? this.hiddenTextarea.selectionStart\n : this.selectionStart,\n selectionEnd: this.inCompositionMode\n ? this.hiddenTextarea.selectionEnd\n : this.selectionEnd,\n };\n this._renderSelection(ctx, selection, boundaries);\n },\n\n /**\n * Renders drag start text selection\n */\n renderDragSourceEffect: function () {\n if (\n this.__isDragging &&\n this.__dragStartSelection &&\n this.__dragStartSelection\n ) {\n this._renderSelection(\n this.canvas.contextTop,\n this.__dragStartSelection,\n this._getCursorBoundaries(\n this.__dragStartSelection.selectionStart,\n true\n )\n );\n }\n },\n\n renderDropTargetEffect: function (e) {\n var dragSelection = this.getSelectionStartFromPointer(e);\n this.renderCursorAt(dragSelection);\n },\n\n /**\n * Renders text selection\n * @private\n * @param {{ selectionStart: number, selectionEnd: number }} selection\n * @param {Object} boundaries Object with left/top/leftOffset/topOffset\n * @param {CanvasRenderingContext2D} ctx transformed context to draw on\n */\n _renderSelection: function (ctx, selection, boundaries) {\n var selectionStart = selection.selectionStart,\n selectionEnd = selection.selectionEnd,\n isJustify = this.textAlign.indexOf('justify') !== -1,\n start = this.get2DCursorLocation(selectionStart),\n end = this.get2DCursorLocation(selectionEnd),\n startLine = start.lineIndex,\n endLine = end.lineIndex,\n startChar = start.charIndex < 0 ? 0 : start.charIndex,\n endChar = end.charIndex < 0 ? 0 : end.charIndex;\n\n for (var i = startLine; i <= endLine; i++) {\n var lineOffset = this._getLineLeftOffset(i) || 0,\n lineHeight = this.getHeightOfLine(i),\n realLineHeight = 0,\n boxStart = 0,\n boxEnd = 0;\n\n if (i === startLine) {\n boxStart = this.__charBounds[startLine][startChar].left;\n }\n if (i >= startLine && i < endLine) {\n boxEnd =\n isJustify && !this.isEndOfWrapping(i)\n ? this.width\n : this.getLineWidth(i) || 5; // WTF is this 5?\n } else if (i === endLine) {\n if (endChar === 0) {\n boxEnd = this.__charBounds[endLine][endChar].left;\n } else {\n var charSpacing = this._getWidthOfCharSpacing();\n boxEnd =\n this.__charBounds[endLine][endChar - 1].left +\n this.__charBounds[endLine][endChar - 1].width -\n charSpacing;\n }\n }\n realLineHeight = lineHeight;\n if (this.lineHeight < 1 || (i === endLine && this.lineHeight > 1)) {\n lineHeight /= this.lineHeight;\n }\n var drawStart = boundaries.left + lineOffset + boxStart,\n drawWidth = boxEnd - boxStart,\n drawHeight = lineHeight,\n extraTop = 0;\n if (this.inCompositionMode) {\n ctx.fillStyle = this.compositionColor || 'black';\n drawHeight = 1;\n extraTop = lineHeight;\n } else {\n ctx.fillStyle = this.selectionColor;\n }\n if (this.direction === 'rtl') {\n if (\n this.textAlign === 'right' ||\n this.textAlign === 'justify' ||\n this.textAlign === 'justify-right'\n ) {\n drawStart = this.width - drawStart - drawWidth;\n } else if (\n this.textAlign === 'left' ||\n this.textAlign === 'justify-left'\n ) {\n drawStart = boundaries.left + lineOffset - boxEnd;\n } else if (\n this.textAlign === 'center' ||\n this.textAlign === 'justify-center'\n ) {\n drawStart = boundaries.left + lineOffset - boxEnd;\n }\n }\n ctx.fillRect(\n drawStart,\n boundaries.top + boundaries.topOffset + extraTop,\n drawWidth,\n drawHeight\n );\n boundaries.topOffset += realLineHeight;\n }\n },\n\n /**\n * High level function to know the height of the cursor.\n * the currentChar is the one that precedes the cursor\n * Returns fontSize of char at the current cursor\n * Unused from the library, is for the end user\n * @return {Number} Character font size\n */\n getCurrentCharFontSize: function () {\n var cp = this._getCurrentCharIndex();\n return this.getValueOfPropertyAt(cp.l, cp.c, 'fontSize');\n },\n\n /**\n * High level function to know the color of the cursor.\n * the currentChar is the one that precedes the cursor\n * Returns color (fill) of char at the current cursor\n * if the text object has a pattern or gradient for filler, it will return that.\n * Unused by the library, is for the end user\n * @return {String | fabric.Gradient | fabric.Pattern} Character color (fill)\n */\n getCurrentCharColor: function () {\n var cp = this._getCurrentCharIndex();\n return this.getValueOfPropertyAt(cp.l, cp.c, 'fill');\n },\n\n /**\n * Returns the cursor position for the getCurrent.. functions\n * @private\n */\n _getCurrentCharIndex: function () {\n var cursorPosition = this.get2DCursorLocation(\n this.selectionStart,\n true\n ),\n charIndex =\n cursorPosition.charIndex > 0 ? cursorPosition.charIndex - 1 : 0;\n return { l: cursorPosition.lineIndex, c: charIndex };\n },\n }\n );\n\n /**\n * Returns fabric.IText instance from an object representation\n * @static\n * @memberOf fabric.IText\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.IText.fromObject = function (object) {\n var styles = fabric.util.stylesFromArray(object.styles, object.text);\n //copy object to prevent mutation\n var objCopy = Object.assign({}, object, { styles: styles });\n return fabric.Object._fromObject(fabric.IText, objCopy, {\n extraParam: 'text',\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\nimport { removeFromArray } from '../util/internals';\n\n// extend this regex to support non english languages\nconst reNonWord = /[ \\n\\.,;!\\?\\-]/;\n\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.IText.prototype,\n /** @lends fabric.IText.prototype */ {\n /**\n * Initializes all the interactive behavior of IText\n */\n initBehavior: function () {\n this.initAddedHandler();\n this.initRemovedHandler();\n this.initCursorSelectionHandlers();\n this.initDoubleClickSimulation();\n this.mouseMoveHandler = this.mouseMoveHandler.bind(this);\n this.dragEnterHandler = this.dragEnterHandler.bind(this);\n this.dragOverHandler = this.dragOverHandler.bind(this);\n this.dragLeaveHandler = this.dragLeaveHandler.bind(this);\n this.dragEndHandler = this.dragEndHandler.bind(this);\n this.dropHandler = this.dropHandler.bind(this);\n this.on('dragenter', this.dragEnterHandler);\n this.on('dragover', this.dragOverHandler);\n this.on('dragleave', this.dragLeaveHandler);\n this.on('dragend', this.dragEndHandler);\n this.on('drop', this.dropHandler);\n },\n\n onDeselect: function () {\n this.isEditing && this.exitEditing();\n this.selected = false;\n },\n\n /**\n * Initializes \"added\" event handler\n */\n initAddedHandler: function () {\n var _this = this;\n this.on('added', function (opt) {\n // make sure we listen to the canvas added event\n var canvas = opt.target;\n if (canvas) {\n if (!canvas._hasITextHandlers) {\n canvas._hasITextHandlers = true;\n _this._initCanvasHandlers(canvas);\n }\n canvas._iTextInstances = canvas._iTextInstances || [];\n canvas._iTextInstances.push(_this);\n }\n });\n },\n\n initRemovedHandler: function () {\n var _this = this;\n this.on('removed', function (opt) {\n // make sure we listen to the canvas removed event\n var canvas = opt.target;\n if (canvas) {\n canvas._iTextInstances = canvas._iTextInstances || [];\n removeFromArray(canvas._iTextInstances, _this);\n if (canvas._iTextInstances.length === 0) {\n canvas._hasITextHandlers = false;\n _this._removeCanvasHandlers(canvas);\n }\n }\n });\n },\n\n /**\n * register canvas event to manage exiting on other instances\n * @private\n */\n _initCanvasHandlers: function (canvas) {\n canvas._mouseUpITextHandler = function () {\n if (canvas._iTextInstances) {\n canvas._iTextInstances.forEach(function (obj) {\n obj.__isMousedown = false;\n });\n }\n };\n canvas.on('mouse:up', canvas._mouseUpITextHandler);\n },\n\n /**\n * remove canvas event to manage exiting on other instances\n * @private\n */\n _removeCanvasHandlers: function (canvas) {\n canvas.off('mouse:up', canvas._mouseUpITextHandler);\n },\n\n /**\n * @private\n */\n _tick: function () {\n this._currentTickState = this._animateCursor(\n this,\n 1,\n this.cursorDuration,\n '_onTickComplete'\n );\n },\n\n /**\n * @private\n */\n _animateCursor: function (obj, targetOpacity, duration, completeMethod) {\n var tickState = {\n isAborted: false,\n abort: function () {\n this.isAborted = true;\n },\n };\n\n obj.animate('_currentCursorOpacity', targetOpacity, {\n duration: duration,\n onComplete: function () {\n if (!tickState.isAborted) {\n obj[completeMethod]();\n }\n },\n onChange: function () {\n // we do not want to animate a selection, only cursor\n if (obj.canvas && obj.selectionStart === obj.selectionEnd) {\n obj.renderCursorOrSelection();\n }\n },\n abort: function () {\n return tickState.isAborted;\n },\n });\n return tickState;\n },\n\n /**\n * @private\n */\n _onTickComplete: function () {\n var _this = this;\n\n if (this._cursorTimeout1) {\n clearTimeout(this._cursorTimeout1);\n }\n this._cursorTimeout1 = setTimeout(function () {\n _this._currentTickCompleteState = _this._animateCursor(\n _this,\n 0,\n this.cursorDuration / 2,\n '_tick'\n );\n }, 100);\n },\n\n /**\n * Initializes delayed cursor\n */\n initDelayedCursor: function (restart) {\n var _this = this,\n delay = restart ? 0 : this.cursorDelay;\n\n this.abortCursorAnimation();\n if (delay) {\n this._cursorTimeout2 = setTimeout(function () {\n _this._tick();\n }, delay);\n } else {\n this._tick();\n }\n },\n\n /**\n * Aborts cursor animation, clears all timeouts and clear textarea context if necessary\n */\n abortCursorAnimation: function () {\n var shouldClear =\n this._currentTickState || this._currentTickCompleteState;\n this._currentTickState && this._currentTickState.abort();\n this._currentTickCompleteState &&\n this._currentTickCompleteState.abort();\n\n clearTimeout(this._cursorTimeout1);\n clearTimeout(this._cursorTimeout2);\n\n this._currentCursorOpacity = 1;\n\n // make sure we clear context even if instance is not editing\n if (shouldClear) {\n this.clearContextTop();\n }\n },\n\n /**\n * Selects entire text\n * @return {fabric.IText} thisArg\n * @chainable\n */\n selectAll: function () {\n this.selectionStart = 0;\n this.selectionEnd = this._text.length;\n this._fireSelectionChanged();\n this._updateTextarea();\n return this;\n },\n\n /**\n * Returns selected text\n * @return {String}\n */\n getSelectedText: function () {\n return this._text\n .slice(this.selectionStart, this.selectionEnd)\n .join('');\n },\n\n /**\n * Find new selection index representing start of current word according to current selection index\n * @param {Number} startFrom Current selection index\n * @return {Number} New selection index\n */\n findWordBoundaryLeft: function (startFrom) {\n var offset = 0,\n index = startFrom - 1;\n\n // remove space before cursor first\n if (this._reSpace.test(this._text[index])) {\n while (this._reSpace.test(this._text[index])) {\n offset++;\n index--;\n }\n }\n while (/\\S/.test(this._text[index]) && index > -1) {\n offset++;\n index--;\n }\n\n return startFrom - offset;\n },\n\n /**\n * Find new selection index representing end of current word according to current selection index\n * @param {Number} startFrom Current selection index\n * @return {Number} New selection index\n */\n findWordBoundaryRight: function (startFrom) {\n var offset = 0,\n index = startFrom;\n\n // remove space after cursor first\n if (this._reSpace.test(this._text[index])) {\n while (this._reSpace.test(this._text[index])) {\n offset++;\n index++;\n }\n }\n while (/\\S/.test(this._text[index]) && index < this._text.length) {\n offset++;\n index++;\n }\n\n return startFrom + offset;\n },\n\n /**\n * Find new selection index representing start of current line according to current selection index\n * @param {Number} startFrom Current selection index\n * @return {Number} New selection index\n */\n findLineBoundaryLeft: function (startFrom) {\n var offset = 0,\n index = startFrom - 1;\n\n while (!/\\n/.test(this._text[index]) && index > -1) {\n offset++;\n index--;\n }\n\n return startFrom - offset;\n },\n\n /**\n * Find new selection index representing end of current line according to current selection index\n * @param {Number} startFrom Current selection index\n * @return {Number} New selection index\n */\n findLineBoundaryRight: function (startFrom) {\n var offset = 0,\n index = startFrom;\n\n while (!/\\n/.test(this._text[index]) && index < this._text.length) {\n offset++;\n index++;\n }\n\n return startFrom + offset;\n },\n\n /**\n * Finds index corresponding to beginning or end of a word\n * @param {Number} selectionStart Index of a character\n * @param {Number} direction 1 or -1\n * @return {Number} Index of the beginning or end of a word\n */\n searchWordBoundary: function (selectionStart, direction) {\n var text = this._text,\n index = this._reSpace.test(text[selectionStart])\n ? selectionStart - 1\n : selectionStart,\n _char = text[index];\n\n while (!reNonWord.test(_char) && index > 0 && index < text.length) {\n index += direction;\n _char = text[index];\n }\n if (reNonWord.test(_char)) {\n index += direction === 1 ? 0 : 1;\n }\n return index;\n },\n\n /**\n * Selects a word based on the index\n * @param {Number} selectionStart Index of a character\n */\n selectWord: function (selectionStart) {\n selectionStart = selectionStart || this.selectionStart;\n var newSelectionStart = this.searchWordBoundary(\n selectionStart,\n -1\n ) /* search backwards */,\n newSelectionEnd = this.searchWordBoundary(\n selectionStart,\n 1\n ); /* search forward */\n\n this.selectionStart = newSelectionStart;\n this.selectionEnd = newSelectionEnd;\n this._fireSelectionChanged();\n this._updateTextarea();\n this.renderCursorOrSelection();\n },\n\n /**\n * Selects a line based on the index\n * @param {Number} selectionStart Index of a character\n * @return {fabric.IText} thisArg\n * @chainable\n */\n selectLine: function (selectionStart) {\n selectionStart = selectionStart || this.selectionStart;\n var newSelectionStart = this.findLineBoundaryLeft(selectionStart),\n newSelectionEnd = this.findLineBoundaryRight(selectionStart);\n\n this.selectionStart = newSelectionStart;\n this.selectionEnd = newSelectionEnd;\n this._fireSelectionChanged();\n this._updateTextarea();\n return this;\n },\n\n /**\n * Enters editing state\n * @return {fabric.IText} thisArg\n * @chainable\n */\n enterEditing: function (e) {\n if (this.isEditing || !this.editable) {\n return;\n }\n if (this.canvas) {\n this.canvas.calcOffset();\n this.exitEditingOnOthers(this.canvas);\n }\n\n this.isEditing = true;\n\n this.initHiddenTextarea(e);\n this.hiddenTextarea.focus();\n this.hiddenTextarea.value = this.text;\n this._updateTextarea();\n this._saveEditingProps();\n this._setEditingProps();\n this._textBeforeEdit = this.text;\n\n this._tick();\n this.fire('editing:entered');\n this._fireSelectionChanged();\n if (!this.canvas) {\n return this;\n }\n this.canvas.fire('text:editing:entered', { target: this });\n this.initMouseMoveHandler();\n this.canvas.requestRenderAll();\n return this;\n },\n\n exitEditingOnOthers: function (canvas) {\n if (canvas._iTextInstances) {\n canvas._iTextInstances.forEach(function (obj) {\n obj.selected = false;\n if (obj.isEditing) {\n obj.exitEditing();\n }\n });\n }\n },\n\n /**\n * Initializes \"mousemove\" event handler\n */\n initMouseMoveHandler: function () {\n this.canvas.on('mouse:move', this.mouseMoveHandler);\n },\n\n /**\n * @private\n */\n mouseMoveHandler: function (options) {\n if (!this.__isMousedown || !this.isEditing) {\n return;\n }\n\n // regain focus\n fabric.document.activeElement !== this.hiddenTextarea &&\n this.hiddenTextarea.focus();\n\n var newSelectionStart = this.getSelectionStartFromPointer(options.e),\n currentStart = this.selectionStart,\n currentEnd = this.selectionEnd;\n if (\n (newSelectionStart !== this.__selectionStartOnMouseDown ||\n currentStart === currentEnd) &&\n (currentStart === newSelectionStart ||\n currentEnd === newSelectionStart)\n ) {\n return;\n }\n if (newSelectionStart > this.__selectionStartOnMouseDown) {\n this.selectionStart = this.__selectionStartOnMouseDown;\n this.selectionEnd = newSelectionStart;\n } else {\n this.selectionStart = newSelectionStart;\n this.selectionEnd = this.__selectionStartOnMouseDown;\n }\n if (\n this.selectionStart !== currentStart ||\n this.selectionEnd !== currentEnd\n ) {\n this.restartCursorIfNeeded();\n this._fireSelectionChanged();\n this._updateTextarea();\n this.renderCursorOrSelection();\n }\n },\n\n /**\n * Override to customize the drag image\n * https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer/setDragImage\n * @param {DragEvent} e\n * @param {object} data\n * @param {number} data.selectionStart\n * @param {number} data.selectionEnd\n * @param {string} data.text\n * @param {string} data.value selected text\n */\n setDragImage: function (e, data) {\n var t = this.calcTransformMatrix();\n var flipFactor = new Point(this.flipX ? -1 : 1, this.flipY ? -1 : 1);\n var boundaries = this._getCursorBoundaries(data.selectionStart);\n var selectionPosition = new Point(\n boundaries.left + boundaries.leftOffset,\n boundaries.top + boundaries.topOffset\n ).multiply(flipFactor);\n var pos = fabric.util.transformPoint(selectionPosition, t);\n var pointer = this.canvas.getPointer(e);\n var diff = pointer.subtract(pos);\n var enableRetinaScaling = this.canvas._isRetinaScaling();\n var retinaScaling = this.canvas.getRetinaScaling();\n var bbox = this.getBoundingRect(true);\n var correction = pos.subtract(new Point(bbox.left, bbox.top));\n var offset = correction.add(diff).scalarMultiply(retinaScaling);\n // prepare instance for drag image snapshot by making all non selected text invisible\n var bgc = this.backgroundColor;\n var styles = fabric.util.object.clone(this.styles, true);\n delete this.backgroundColor;\n var styleOverride = {\n fill: 'transparent',\n textBackgroundColor: 'transparent',\n };\n this.setSelectionStyles(styleOverride, 0, data.selectionStart);\n this.setSelectionStyles(\n styleOverride,\n data.selectionEnd,\n data.text.length\n );\n var dragImage = this.toCanvasElement({\n enableRetinaScaling: enableRetinaScaling,\n });\n this.backgroundColor = bgc;\n this.styles = styles;\n // handle retina scaling\n if (enableRetinaScaling && retinaScaling > 1) {\n var c = fabric.util.createCanvasElement();\n c.width = dragImage.width / retinaScaling;\n c.height = dragImage.height / retinaScaling;\n var ctx = c.getContext('2d');\n ctx.scale(1 / retinaScaling, 1 / retinaScaling);\n ctx.drawImage(dragImage, 0, 0);\n dragImage = c;\n }\n this.__dragImageDisposer && this.__dragImageDisposer();\n this.__dragImageDisposer = function () {\n dragImage.remove();\n };\n // position drag image offsecreen\n fabric.util.setStyle(dragImage, {\n position: 'absolute',\n left: -dragImage.width + 'px',\n border: 'none',\n });\n fabric.document.body.appendChild(dragImage);\n e.dataTransfer.setDragImage(dragImage, offset.x, offset.y);\n },\n\n /**\n * support native like text dragging\n * @private\n * @param {DragEvent} e\n * @returns {boolean} should handle event\n */\n onDragStart: function (e) {\n this.__dragStartFired = true;\n if (this.__isDragging) {\n var selection = (this.__dragStartSelection = {\n selectionStart: this.selectionStart,\n selectionEnd: this.selectionEnd,\n });\n var value = this._text\n .slice(selection.selectionStart, selection.selectionEnd)\n .join('');\n var data = Object.assign(\n { text: this.text, value: value },\n selection\n );\n e.dataTransfer.setData('text/plain', value);\n e.dataTransfer.setData(\n 'application/fabric',\n JSON.stringify({\n value: value,\n styles: this.getSelectionStyles(\n selection.selectionStart,\n selection.selectionEnd,\n true\n ),\n })\n );\n e.dataTransfer.effectAllowed = 'copyMove';\n this.setDragImage(e, data);\n }\n this.abortCursorAnimation();\n return this.__isDragging;\n },\n\n /**\n * Override to customize drag and drop behavior\n * @public\n * @param {DragEvent} e\n * @returns {boolean}\n */\n canDrop: function (e) {\n if (this.editable && !this.__corner) {\n if (this.__isDragging && this.__dragStartSelection) {\n // drag source trying to drop over itself\n // allow dropping only outside of drag start selection\n var index = this.getSelectionStartFromPointer(e);\n var dragStartSelection = this.__dragStartSelection;\n return (\n index < dragStartSelection.selectionStart ||\n index > dragStartSelection.selectionEnd\n );\n }\n return true;\n }\n return false;\n },\n\n /**\n * support native like text dragging\n * @private\n * @param {object} options\n * @param {DragEvent} options.e\n */\n dragEnterHandler: function (options) {\n var e = options.e;\n var canDrop = !e.defaultPrevented && this.canDrop(e);\n if (!this.__isDraggingOver && canDrop) {\n this.__isDraggingOver = true;\n }\n },\n\n /**\n * support native like text dragging\n * @private\n * @param {object} options\n * @param {DragEvent} options.e\n */\n dragOverHandler: function (options) {\n var e = options.e;\n var canDrop = !e.defaultPrevented && this.canDrop(e);\n if (!this.__isDraggingOver && canDrop) {\n this.__isDraggingOver = true;\n } else if (this.__isDraggingOver && !canDrop) {\n // drop state has changed\n this.__isDraggingOver = false;\n }\n if (this.__isDraggingOver) {\n // can be dropped, inform browser\n e.preventDefault();\n // inform event subscribers\n options.canDrop = true;\n options.dropTarget = this;\n // find cursor under the drag part.\n }\n },\n\n /**\n * support native like text dragging\n * @private\n */\n dragLeaveHandler: function () {\n if (this.__isDraggingOver || this.__isDragging) {\n this.__isDraggingOver = false;\n }\n },\n\n /**\n * support native like text dragging\n * fired only on the drag source\n * handle changes to the drag source in case of a drop on another object or a cancellation\n * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#finishing_a_drag\n * @private\n * @param {object} options\n * @param {DragEvent} options.e\n */\n dragEndHandler: function (options) {\n var e = options.e;\n if (this.__isDragging && this.__dragStartFired) {\n // once the drop event finishes we check if we need to change the drag source\n // if the drag source received the drop we bail out\n if (this.__dragStartSelection) {\n var selectionStart = this.__dragStartSelection.selectionStart;\n var selectionEnd = this.__dragStartSelection.selectionEnd;\n var dropEffect = e.dataTransfer.dropEffect;\n if (dropEffect === 'none') {\n this.selectionStart = selectionStart;\n this.selectionEnd = selectionEnd;\n this._updateTextarea();\n } else {\n this.clearContextTop();\n if (dropEffect === 'move') {\n this.insertChars('', null, selectionStart, selectionEnd);\n this.selectionStart = this.selectionEnd = selectionStart;\n this.hiddenTextarea && (this.hiddenTextarea.value = this.text);\n this._updateTextarea();\n this.fire('changed', {\n index: selectionStart,\n action: 'dragend',\n });\n this.canvas.fire('text:changed', { target: this });\n this.canvas.requestRenderAll();\n }\n this.exitEditing();\n // disable mouse up logic\n this.__lastSelected = false;\n }\n }\n }\n\n this.__dragImageDisposer && this.__dragImageDisposer();\n delete this.__dragImageDisposer;\n delete this.__dragStartSelection;\n this.__isDraggingOver = false;\n },\n\n /**\n * support native like text dragging\n *\n * Override the `text/plain | application/fabric` types of {@link DragEvent#dataTransfer}\n * in order to change the drop value or to customize styling respectively, by listening to the `drop:before` event\n * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#performing_a_drop\n * @private\n * @param {object} options\n * @param {DragEvent} options.e\n */\n dropHandler: function (options) {\n var e = options.e,\n didDrop = e.defaultPrevented;\n this.__isDraggingOver = false;\n // inform browser that the drop has been accepted\n e.preventDefault();\n var insert = e.dataTransfer.getData('text/plain');\n if (insert && !didDrop) {\n var insertAt = this.getSelectionStartFromPointer(e);\n var data = e.dataTransfer.types.includes('application/fabric')\n ? JSON.parse(e.dataTransfer.getData('application/fabric'))\n : {};\n var styles = data.styles;\n var trailing = insert[Math.max(0, insert.length - 1)];\n var selectionStartOffset = 0;\n // drag and drop in same instance\n if (this.__dragStartSelection) {\n var selectionStart = this.__dragStartSelection.selectionStart;\n var selectionEnd = this.__dragStartSelection.selectionEnd;\n if (insertAt > selectionStart && insertAt <= selectionEnd) {\n insertAt = selectionStart;\n } else if (insertAt > selectionEnd) {\n insertAt -= selectionEnd - selectionStart;\n }\n this.insertChars('', null, selectionStart, selectionEnd);\n // prevent `dragend` from handling event\n delete this.__dragStartSelection;\n }\n // remove redundant line break\n if (\n this._reNewline.test(trailing) &&\n (this._reNewline.test(this._text[insertAt]) ||\n insertAt === this._text.length)\n ) {\n insert = insert.trimEnd();\n }\n // inform subscribers\n options.didDrop = true;\n options.dropTarget = this;\n // finalize\n this.insertChars(insert, styles, insertAt);\n // can this part be moved in an outside event? andrea to check.\n this.canvas.setActiveObject(this);\n this.enterEditing();\n this.selectionStart = Math.min(\n insertAt + selectionStartOffset,\n this._text.length\n );\n this.selectionEnd = Math.min(\n this.selectionStart + insert.length,\n this._text.length\n );\n this.hiddenTextarea && (this.hiddenTextarea.value = this.text);\n this._updateTextarea();\n this.fire('changed', {\n index: insertAt + selectionStartOffset,\n action: 'drop',\n });\n this.canvas.fire('text:changed', { target: this });\n this.canvas.contextTopDirty = true;\n this.canvas.requestRenderAll();\n }\n },\n\n /**\n * @private\n */\n _setEditingProps: function () {\n this.hoverCursor = 'text';\n\n if (this.canvas) {\n this.canvas.defaultCursor = this.canvas.moveCursor = 'text';\n }\n\n this.borderColor = this.editingBorderColor;\n this.hasControls = this.selectable = false;\n this.lockMovementX = this.lockMovementY = true;\n },\n\n /**\n * convert from textarea to grapheme indexes\n */\n fromStringToGraphemeSelection: function (start, end, text) {\n var smallerTextStart = text.slice(0, start),\n graphemeStart = this.graphemeSplit(smallerTextStart).length;\n if (start === end) {\n return { selectionStart: graphemeStart, selectionEnd: graphemeStart };\n }\n var smallerTextEnd = text.slice(start, end),\n graphemeEnd = this.graphemeSplit(smallerTextEnd).length;\n return {\n selectionStart: graphemeStart,\n selectionEnd: graphemeStart + graphemeEnd,\n };\n },\n\n /**\n * convert from fabric to textarea values\n */\n fromGraphemeToStringSelection: function (start, end, _text) {\n var smallerTextStart = _text.slice(0, start),\n graphemeStart = smallerTextStart.join('').length;\n if (start === end) {\n return { selectionStart: graphemeStart, selectionEnd: graphemeStart };\n }\n var smallerTextEnd = _text.slice(start, end),\n graphemeEnd = smallerTextEnd.join('').length;\n return {\n selectionStart: graphemeStart,\n selectionEnd: graphemeStart + graphemeEnd,\n };\n },\n\n /**\n * @private\n */\n _updateTextarea: function () {\n this.cursorOffsetCache = {};\n if (!this.hiddenTextarea) {\n return;\n }\n if (!this.inCompositionMode) {\n var newSelection = this.fromGraphemeToStringSelection(\n this.selectionStart,\n this.selectionEnd,\n this._text\n );\n this.hiddenTextarea.selectionStart = newSelection.selectionStart;\n this.hiddenTextarea.selectionEnd = newSelection.selectionEnd;\n }\n this.updateTextareaPosition();\n },\n\n /**\n * @private\n */\n updateFromTextArea: function () {\n if (!this.hiddenTextarea) {\n return;\n }\n this.cursorOffsetCache = {};\n this.text = this.hiddenTextarea.value;\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n this.setCoords();\n }\n var newSelection = this.fromStringToGraphemeSelection(\n this.hiddenTextarea.selectionStart,\n this.hiddenTextarea.selectionEnd,\n this.hiddenTextarea.value\n );\n this.selectionEnd = this.selectionStart = newSelection.selectionEnd;\n if (!this.inCompositionMode) {\n this.selectionStart = newSelection.selectionStart;\n }\n this.updateTextareaPosition();\n },\n\n /**\n * @private\n */\n updateTextareaPosition: function () {\n if (this.selectionStart === this.selectionEnd) {\n var style = this._calcTextareaPosition();\n this.hiddenTextarea.style.left = style.left;\n this.hiddenTextarea.style.top = style.top;\n }\n },\n\n /**\n * @private\n * @return {Object} style contains style for hiddenTextarea\n */\n _calcTextareaPosition: function () {\n if (!this.canvas) {\n return { x: 1, y: 1 };\n }\n var desiredPosition = this.inCompositionMode\n ? this.compositionStart\n : this.selectionStart,\n boundaries = this._getCursorBoundaries(desiredPosition),\n cursorLocation = this.get2DCursorLocation(desiredPosition),\n lineIndex = cursorLocation.lineIndex,\n charIndex = cursorLocation.charIndex,\n charHeight =\n this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize') *\n this.lineHeight,\n leftOffset = boundaries.leftOffset,\n m = this.calcTransformMatrix(),\n p = {\n x: boundaries.left + leftOffset,\n y: boundaries.top + boundaries.topOffset + charHeight,\n },\n retinaScaling = this.canvas.getRetinaScaling(),\n upperCanvas = this.canvas.upperCanvasEl,\n upperCanvasWidth = upperCanvas.width / retinaScaling,\n upperCanvasHeight = upperCanvas.height / retinaScaling,\n maxWidth = upperCanvasWidth - charHeight,\n maxHeight = upperCanvasHeight - charHeight,\n scaleX = upperCanvas.clientWidth / upperCanvasWidth,\n scaleY = upperCanvas.clientHeight / upperCanvasHeight;\n\n p = fabric.util.transformPoint(p, m);\n p = fabric.util.transformPoint(p, this.canvas.viewportTransform);\n p.x *= scaleX;\n p.y *= scaleY;\n if (p.x < 0) {\n p.x = 0;\n }\n if (p.x > maxWidth) {\n p.x = maxWidth;\n }\n if (p.y < 0) {\n p.y = 0;\n }\n if (p.y > maxHeight) {\n p.y = maxHeight;\n }\n\n // add canvas offset on document\n p.x += this.canvas._offset.left;\n p.y += this.canvas._offset.top;\n\n return {\n left: p.x + 'px',\n top: p.y + 'px',\n fontSize: charHeight + 'px',\n charHeight: charHeight,\n };\n },\n\n /**\n * @private\n */\n _saveEditingProps: function () {\n this._savedProps = {\n hasControls: this.hasControls,\n borderColor: this.borderColor,\n lockMovementX: this.lockMovementX,\n lockMovementY: this.lockMovementY,\n hoverCursor: this.hoverCursor,\n selectable: this.selectable,\n defaultCursor: this.canvas && this.canvas.defaultCursor,\n moveCursor: this.canvas && this.canvas.moveCursor,\n };\n },\n\n /**\n * @private\n */\n _restoreEditingProps: function () {\n if (!this._savedProps) {\n return;\n }\n\n this.hoverCursor = this._savedProps.hoverCursor;\n this.hasControls = this._savedProps.hasControls;\n this.borderColor = this._savedProps.borderColor;\n this.selectable = this._savedProps.selectable;\n this.lockMovementX = this._savedProps.lockMovementX;\n this.lockMovementY = this._savedProps.lockMovementY;\n\n if (this.canvas) {\n this.canvas.defaultCursor = this._savedProps.defaultCursor;\n this.canvas.moveCursor = this._savedProps.moveCursor;\n }\n\n delete this._savedProps;\n },\n\n /**\n * Exits from editing state\n * @return {fabric.IText} thisArg\n * @chainable\n */\n exitEditing: function () {\n var isTextChanged = this._textBeforeEdit !== this.text;\n var hiddenTextarea = this.hiddenTextarea;\n this.selected = false;\n this.isEditing = false;\n\n this.selectionEnd = this.selectionStart;\n\n if (hiddenTextarea) {\n hiddenTextarea.blur && hiddenTextarea.blur();\n hiddenTextarea.parentNode &&\n hiddenTextarea.parentNode.removeChild(hiddenTextarea);\n }\n this.hiddenTextarea = null;\n this.abortCursorAnimation();\n this._restoreEditingProps();\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n this.setCoords();\n }\n this.fire('editing:exited');\n isTextChanged && this.fire('modified');\n if (this.canvas) {\n this.canvas.off('mouse:move', this.mouseMoveHandler);\n this.canvas.fire('text:editing:exited', { target: this });\n isTextChanged &&\n this.canvas.fire('object:modified', { target: this });\n }\n return this;\n },\n\n /**\n * @private\n */\n _removeExtraneousStyles: function () {\n for (var prop in this.styles) {\n if (!this._textLines[prop]) {\n delete this.styles[prop];\n }\n }\n },\n\n /**\n * remove and reflow a style block from start to end.\n * @param {Number} start linear start position for removal (included in removal)\n * @param {Number} end linear end position for removal ( excluded from removal )\n */\n removeStyleFromTo: function (start, end) {\n var cursorStart = this.get2DCursorLocation(start, true),\n cursorEnd = this.get2DCursorLocation(end, true),\n lineStart = cursorStart.lineIndex,\n charStart = cursorStart.charIndex,\n lineEnd = cursorEnd.lineIndex,\n charEnd = cursorEnd.charIndex,\n i,\n styleObj;\n if (lineStart !== lineEnd) {\n // step1 remove the trailing of lineStart\n if (this.styles[lineStart]) {\n for (\n i = charStart;\n i < this._unwrappedTextLines[lineStart].length;\n i++\n ) {\n delete this.styles[lineStart][i];\n }\n }\n // step2 move the trailing of lineEnd to lineStart if needed\n if (this.styles[lineEnd]) {\n for (\n i = charEnd;\n i < this._unwrappedTextLines[lineEnd].length;\n i++\n ) {\n styleObj = this.styles[lineEnd][i];\n if (styleObj) {\n this.styles[lineStart] || (this.styles[lineStart] = {});\n this.styles[lineStart][charStart + i - charEnd] = styleObj;\n }\n }\n }\n // step3 detects lines will be completely removed.\n for (i = lineStart + 1; i <= lineEnd; i++) {\n delete this.styles[i];\n }\n // step4 shift remaining lines.\n this.shiftLineStyles(lineEnd, lineStart - lineEnd);\n } else {\n // remove and shift left on the same line\n if (this.styles[lineStart]) {\n styleObj = this.styles[lineStart];\n var diff = charEnd - charStart,\n numericChar,\n _char;\n for (i = charStart; i < charEnd; i++) {\n delete styleObj[i];\n }\n for (_char in this.styles[lineStart]) {\n numericChar = parseInt(_char, 10);\n if (numericChar >= charEnd) {\n styleObj[numericChar - diff] = styleObj[_char];\n delete styleObj[_char];\n }\n }\n }\n }\n },\n\n /**\n * Shifts line styles up or down\n * @param {Number} lineIndex Index of a line\n * @param {Number} offset Can any number?\n */\n shiftLineStyles: function (lineIndex, offset) {\n // shift all line styles by offset upward or downward\n // do not clone deep. we need new array, not new style objects\n var clonedStyles = Object.assign({}, this.styles);\n for (var line in this.styles) {\n var numericLine = parseInt(line, 10);\n if (numericLine > lineIndex) {\n this.styles[numericLine + offset] = clonedStyles[numericLine];\n if (!clonedStyles[numericLine - offset]) {\n delete this.styles[numericLine];\n }\n }\n }\n },\n\n restartCursorIfNeeded: function () {\n if (\n !this._currentTickState ||\n this._currentTickState.isAborted ||\n !this._currentTickCompleteState ||\n this._currentTickCompleteState.isAborted\n ) {\n this.initDelayedCursor();\n }\n },\n\n /**\n * Handle insertion of more consecutive style lines for when one or more\n * newlines gets added to the text. Since current style needs to be shifted\n * first we shift the current style of the number lines needed, then we add\n * new lines from the last to the first.\n * @param {Number} lineIndex Index of a line\n * @param {Number} charIndex Index of a char\n * @param {Number} qty number of lines to add\n * @param {Array} copiedStyle Array of objects styles\n */\n insertNewlineStyleObject: function (\n lineIndex,\n charIndex,\n qty,\n copiedStyle\n ) {\n var currentCharStyle,\n newLineStyles = {},\n somethingAdded = false,\n isEndOfLine =\n this._unwrappedTextLines[lineIndex].length === charIndex;\n\n qty || (qty = 1);\n this.shiftLineStyles(lineIndex, qty);\n if (this.styles[lineIndex]) {\n currentCharStyle =\n this.styles[lineIndex][charIndex === 0 ? charIndex : charIndex - 1];\n }\n // we clone styles of all chars\n // after cursor onto the current line\n for (var index in this.styles[lineIndex]) {\n var numIndex = parseInt(index, 10);\n if (numIndex >= charIndex) {\n somethingAdded = true;\n newLineStyles[numIndex - charIndex] = this.styles[lineIndex][index];\n // remove lines from the previous line since they're on a new line now\n if (!(isEndOfLine && charIndex === 0)) {\n delete this.styles[lineIndex][index];\n }\n }\n }\n var styleCarriedOver = false;\n if (somethingAdded && !isEndOfLine) {\n // if is end of line, the extra style we copied\n // is probably not something we want\n this.styles[lineIndex + qty] = newLineStyles;\n styleCarriedOver = true;\n }\n if (styleCarriedOver) {\n // skip the last line of since we already prepared it.\n qty--;\n }\n // for the all the lines or all the other lines\n // we clone current char style onto the next (otherwise empty) line\n while (qty > 0) {\n if (copiedStyle && copiedStyle[qty - 1]) {\n this.styles[lineIndex + qty] = {\n 0: Object.assign({}, copiedStyle[qty - 1]),\n };\n } else if (currentCharStyle) {\n this.styles[lineIndex + qty] = {\n 0: Object.assign({}, currentCharStyle),\n };\n } else {\n delete this.styles[lineIndex + qty];\n }\n qty--;\n }\n this._forceClearCache = true;\n },\n\n /**\n * Inserts style object for a given line/char index\n * @param {Number} lineIndex Index of a line\n * @param {Number} charIndex Index of a char\n * @param {Number} quantity number Style object to insert, if given\n * @param {Array} copiedStyle array of style objects\n */\n insertCharStyleObject: function (\n lineIndex,\n charIndex,\n quantity,\n copiedStyle\n ) {\n if (!this.styles) {\n this.styles = {};\n }\n var currentLineStyles = this.styles[lineIndex],\n currentLineStylesCloned = currentLineStyles\n ? Object.assign({}, currentLineStyles)\n : {};\n\n quantity || (quantity = 1);\n // shift all char styles by quantity forward\n // 0,1,2,3 -> (charIndex=2) -> 0,1,3,4 -> (insert 2) -> 0,1,2,3,4\n for (var index in currentLineStylesCloned) {\n var numericIndex = parseInt(index, 10);\n if (numericIndex >= charIndex) {\n currentLineStyles[numericIndex + quantity] =\n currentLineStylesCloned[numericIndex];\n // only delete the style if there was nothing moved there\n if (!currentLineStylesCloned[numericIndex - quantity]) {\n delete currentLineStyles[numericIndex];\n }\n }\n }\n this._forceClearCache = true;\n if (copiedStyle) {\n while (quantity--) {\n if (!Object.keys(copiedStyle[quantity]).length) {\n continue;\n }\n if (!this.styles[lineIndex]) {\n this.styles[lineIndex] = {};\n }\n this.styles[lineIndex][charIndex + quantity] = Object.assign(\n {},\n copiedStyle[quantity]\n );\n }\n return;\n }\n if (!currentLineStyles) {\n return;\n }\n var newStyle = currentLineStyles[charIndex ? charIndex - 1 : 1];\n while (newStyle && quantity--) {\n this.styles[lineIndex][charIndex + quantity] = Object.assign(\n {},\n newStyle\n );\n }\n },\n\n /**\n * Inserts style object(s)\n * @param {Array} insertedText Characters at the location where style is inserted\n * @param {Number} start cursor index for inserting style\n * @param {Array} [copiedStyle] array of style objects to insert.\n */\n insertNewStyleBlock: function (insertedText, start, copiedStyle) {\n var cursorLoc = this.get2DCursorLocation(start, true),\n addedLines = [0],\n linesLength = 0;\n // get an array of how many char per lines are being added.\n for (var i = 0; i < insertedText.length; i++) {\n if (insertedText[i] === '\\n') {\n linesLength++;\n addedLines[linesLength] = 0;\n } else {\n addedLines[linesLength]++;\n }\n }\n // for the first line copy the style from the current char position.\n if (addedLines[0] > 0) {\n this.insertCharStyleObject(\n cursorLoc.lineIndex,\n cursorLoc.charIndex,\n addedLines[0],\n copiedStyle\n );\n copiedStyle = copiedStyle && copiedStyle.slice(addedLines[0] + 1);\n }\n linesLength &&\n this.insertNewlineStyleObject(\n cursorLoc.lineIndex,\n cursorLoc.charIndex + addedLines[0],\n linesLength\n );\n for (var i = 1; i < linesLength; i++) {\n if (addedLines[i] > 0) {\n this.insertCharStyleObject(\n cursorLoc.lineIndex + i,\n 0,\n addedLines[i],\n copiedStyle\n );\n } else if (copiedStyle) {\n // this test is required in order to close #6841\n // when a pasted buffer begins with a newline then\n // this.styles[cursorLoc.lineIndex + i] and copiedStyle[0]\n // may be undefined for some reason\n if (this.styles[cursorLoc.lineIndex + i] && copiedStyle[0]) {\n this.styles[cursorLoc.lineIndex + i][0] = copiedStyle[0];\n }\n }\n copiedStyle = copiedStyle && copiedStyle.slice(addedLines[i] + 1);\n }\n // we use i outside the loop to get it like linesLength\n if (addedLines[i] > 0) {\n this.insertCharStyleObject(\n cursorLoc.lineIndex + i,\n 0,\n addedLines[i],\n copiedStyle\n );\n }\n },\n\n /**\n * Set the selectionStart and selectionEnd according to the new position of cursor\n * mimic the key - mouse navigation when shift is pressed.\n */\n setSelectionStartEndWithShift: function (start, end, newSelection) {\n if (newSelection <= start) {\n if (end === start) {\n this._selectionDirection = 'left';\n } else if (this._selectionDirection === 'right') {\n this._selectionDirection = 'left';\n this.selectionEnd = start;\n }\n this.selectionStart = newSelection;\n } else if (newSelection > start && newSelection < end) {\n if (this._selectionDirection === 'right') {\n this.selectionEnd = newSelection;\n } else {\n this.selectionStart = newSelection;\n }\n } else {\n // newSelection is > selection start and end\n if (end === start) {\n this._selectionDirection = 'right';\n } else if (this._selectionDirection === 'left') {\n this._selectionDirection = 'right';\n this.selectionStart = end;\n }\n this.selectionEnd = newSelection;\n }\n },\n\n setSelectionInBoundaries: function () {\n var length = this.text.length;\n if (this.selectionStart > length) {\n this.selectionStart = length;\n } else if (this.selectionStart < 0) {\n this.selectionStart = 0;\n }\n if (this.selectionEnd > length) {\n this.selectionEnd = length;\n } else if (this.selectionEnd < 0) {\n this.selectionEnd = 0;\n }\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.IText.prototype,\n /** @lends fabric.IText.prototype */ {\n /**\n * Initializes \"dbclick\" event handler\n */\n initDoubleClickSimulation: function () {\n // for double click\n this.__lastClickTime = +new Date();\n\n // for triple click\n this.__lastLastClickTime = +new Date();\n\n this.__lastPointer = {};\n\n this.on('mousedown', this.onMouseDown);\n },\n\n /**\n * Default event handler to simulate triple click\n * @private\n */\n onMouseDown: function (options) {\n if (!this.canvas) {\n return;\n }\n this.__newClickTime = +new Date();\n var newPointer = options.pointer;\n if (this.isTripleClick(newPointer)) {\n this.fire('tripleclick', options);\n this._stopEvent(options.e);\n }\n this.__lastLastClickTime = this.__lastClickTime;\n this.__lastClickTime = this.__newClickTime;\n this.__lastPointer = newPointer;\n this.__lastIsEditing = this.isEditing;\n this.__lastSelected = this.selected;\n },\n\n isTripleClick: function (newPointer) {\n return (\n this.__newClickTime - this.__lastClickTime < 500 &&\n this.__lastClickTime - this.__lastLastClickTime < 500 &&\n this.__lastPointer.x === newPointer.x &&\n this.__lastPointer.y === newPointer.y\n );\n },\n\n /**\n * @private\n */\n _stopEvent: function (e) {\n e.preventDefault && e.preventDefault();\n e.stopPropagation && e.stopPropagation();\n },\n\n /**\n * Initializes event handlers related to cursor or selection\n */\n initCursorSelectionHandlers: function () {\n this.initMousedownHandler();\n this.initMouseupHandler();\n this.initClicks();\n },\n\n /**\n * Default handler for double click, select a word\n */\n doubleClickHandler: function (options) {\n if (!this.isEditing) {\n return;\n }\n this.selectWord(this.getSelectionStartFromPointer(options.e));\n },\n\n /**\n * Default handler for triple click, select a line\n */\n tripleClickHandler: function (options) {\n if (!this.isEditing) {\n return;\n }\n this.selectLine(this.getSelectionStartFromPointer(options.e));\n },\n\n /**\n * Initializes double and triple click event handlers\n */\n initClicks: function () {\n this.on('mousedblclick', this.doubleClickHandler);\n this.on('tripleclick', this.tripleClickHandler);\n },\n\n /**\n * Default event handler for the basic functionalities needed on _mouseDown\n * can be overridden to do something different.\n * Scope of this implementation is: find the click position, set selectionStart\n * find selectionEnd, initialize the drawing of either cursor or selection area\n * initializing a mousedDown on a text area will cancel fabricjs knowledge of\n * current compositionMode. It will be set to false.\n */\n _mouseDownHandler: function (options) {\n if (\n !this.canvas ||\n !this.editable ||\n (options.e.button && options.e.button !== 1)\n ) {\n return;\n }\n\n this.__isMousedown = true;\n\n if (this.selected) {\n this.inCompositionMode = false;\n this.setCursorByClick(options.e);\n }\n\n if (this.isEditing) {\n this.__selectionStartOnMouseDown = this.selectionStart;\n if (this.selectionStart === this.selectionEnd) {\n this.abortCursorAnimation();\n }\n this.renderCursorOrSelection();\n }\n },\n\n /**\n * Default event handler for the basic functionalities needed on mousedown:before\n * can be overridden to do something different.\n * Scope of this implementation is: verify the object is already selected when mousing down\n */\n _mouseDownHandlerBefore: function (options) {\n if (\n !this.canvas ||\n !this.editable ||\n (options.e.button && options.e.button !== 1)\n ) {\n return;\n }\n // we want to avoid that an object that was selected and then becomes unselectable,\n // may trigger editing mode in some way.\n this.selected = this === this.canvas._activeObject;\n // text dragging logic\n var newSelection = this.getSelectionStartFromPointer(options.e);\n this.__isDragging =\n this.isEditing &&\n newSelection >= this.selectionStart &&\n newSelection <= this.selectionEnd &&\n this.selectionStart < this.selectionEnd;\n },\n\n /**\n * Initializes \"mousedown\" event handler\n */\n initMousedownHandler: function () {\n this.on('mousedown', this._mouseDownHandler);\n this.on('mousedown:before', this._mouseDownHandlerBefore);\n },\n\n /**\n * Initializes \"mouseup\" event handler\n */\n initMouseupHandler: function () {\n this.on('mouseup', this.mouseUpHandler);\n },\n\n /**\n * standard handler for mouse up, overridable\n * @private\n */\n mouseUpHandler: function (options) {\n this.__isMousedown = false;\n if (\n !this.editable ||\n (this.group && !this.group.interactive) ||\n (options.transform && options.transform.actionPerformed) ||\n (options.e.button && options.e.button !== 1)\n ) {\n return;\n }\n\n if (this.canvas) {\n var currentActive = this.canvas._activeObject;\n if (currentActive && currentActive !== this) {\n // avoid running this logic when there is an active object\n // this because is possible with shift click and fast clicks,\n // to rapidly deselect and reselect this object and trigger an enterEdit\n return;\n }\n }\n\n if (this.__lastSelected && !this.__corner) {\n this.selected = false;\n this.__lastSelected = false;\n this.enterEditing(options.e);\n if (this.selectionStart === this.selectionEnd) {\n this.initDelayedCursor(true);\n } else {\n this.renderCursorOrSelection();\n }\n } else {\n this.selected = true;\n }\n },\n\n /**\n * Changes cursor location in a text depending on passed pointer (x/y) object\n * @param {Event} e Event object\n */\n setCursorByClick: function (e) {\n var newSelection = this.getSelectionStartFromPointer(e),\n start = this.selectionStart,\n end = this.selectionEnd;\n if (e.shiftKey) {\n this.setSelectionStartEndWithShift(start, end, newSelection);\n } else {\n this.selectionStart = newSelection;\n this.selectionEnd = newSelection;\n }\n if (this.isEditing) {\n this._fireSelectionChanged();\n this._updateTextarea();\n }\n },\n\n /**\n * Returns index of a character corresponding to where an object was clicked\n * @param {Event} e Event object\n * @return {Number} Index of a character\n */\n getSelectionStartFromPointer: function (e) {\n var mouseOffset = this.getLocalPointer(e),\n prevWidth = 0,\n width = 0,\n height = 0,\n charIndex = 0,\n lineIndex = 0,\n lineLeftOffset,\n line;\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n if (height <= mouseOffset.y) {\n height += this.getHeightOfLine(i) * this.scaleY;\n lineIndex = i;\n if (i > 0) {\n charIndex +=\n this._textLines[i - 1].length +\n this.missingNewlineOffset(i - 1);\n }\n } else {\n break;\n }\n }\n lineLeftOffset = Math.abs(this._getLineLeftOffset(lineIndex));\n width = lineLeftOffset * this.scaleX;\n line = this._textLines[lineIndex];\n // handling of RTL: in order to get things work correctly,\n // we assume RTL writing is mirrored compared to LTR writing.\n // so in position detection we mirror the X offset, and when is time\n // of rendering it, we mirror it again.\n if (this.direction === 'rtl') {\n mouseOffset.x = this.width * this.scaleX - mouseOffset.x;\n }\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n prevWidth = width;\n // i removed something about flipX here, check.\n width += this.__charBounds[lineIndex][j].kernedWidth * this.scaleX;\n if (width <= mouseOffset.x) {\n charIndex++;\n } else {\n break;\n }\n }\n return this._getNewSelectionStartFromOffset(\n mouseOffset,\n prevWidth,\n width,\n charIndex,\n jlen\n );\n },\n\n /**\n * @private\n */\n _getNewSelectionStartFromOffset: function (\n mouseOffset,\n prevWidth,\n width,\n index,\n jlen\n ) {\n // we need Math.abs because when width is after the last char, the offset is given as 1, while is 0\n var distanceBtwLastCharAndCursor = mouseOffset.x - prevWidth,\n distanceBtwNextCharAndCursor = width - mouseOffset.x,\n offset =\n distanceBtwNextCharAndCursor > distanceBtwLastCharAndCursor ||\n distanceBtwNextCharAndCursor < 0\n ? 0\n : 1,\n newSelectionStart = index + offset;\n // if object is horizontally flipped, mirror cursor location from the end\n if (this.flipX) {\n newSelectionStart = jlen - newSelectionStart;\n }\n\n if (newSelectionStart > this._text.length) {\n newSelectionStart = this._text.length;\n }\n\n return newSelectionStart;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { config } from '../config';\n\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.IText.prototype,\n /** @lends fabric.IText.prototype */ {\n /**\n * Initializes hidden textarea (needed to bring up keyboard in iOS)\n */\n initHiddenTextarea: function () {\n this.hiddenTextarea = fabric.document.createElement('textarea');\n this.hiddenTextarea.setAttribute('autocapitalize', 'off');\n this.hiddenTextarea.setAttribute('autocorrect', 'off');\n this.hiddenTextarea.setAttribute('autocomplete', 'off');\n this.hiddenTextarea.setAttribute('spellcheck', 'false');\n this.hiddenTextarea.setAttribute('data-fabric', 'textarea');\n this.hiddenTextarea.setAttribute('wrap', 'off');\n var style = this._calcTextareaPosition();\n // line-height: 1px; was removed from the style to fix this:\n // https://bugs.chromium.org/p/chromium/issues/detail?id=870966\n this.hiddenTextarea.style.cssText =\n 'position: absolute; top: ' +\n style.top +\n '; left: ' +\n style.left +\n '; z-index: -999; opacity: 0; width: 1px; height: 1px; font-size: 1px;' +\n ' padding-top: ' +\n style.fontSize +\n ';';\n\n if (this.hiddenTextareaContainer) {\n this.hiddenTextareaContainer.appendChild(this.hiddenTextarea);\n } else {\n fabric.document.body.appendChild(this.hiddenTextarea);\n }\n\n fabric.util.addListener(\n this.hiddenTextarea,\n 'blur',\n this.blur.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'keydown',\n this.onKeyDown.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'keyup',\n this.onKeyUp.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'input',\n this.onInput.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'copy',\n this.copy.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'cut',\n this.copy.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'paste',\n this.paste.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'compositionstart',\n this.onCompositionStart.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'compositionupdate',\n this.onCompositionUpdate.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'compositionend',\n this.onCompositionEnd.bind(this)\n );\n\n if (!this._clickHandlerInitialized && this.canvas) {\n fabric.util.addListener(\n this.canvas.upperCanvasEl,\n 'click',\n this.onClick.bind(this)\n );\n this._clickHandlerInitialized = true;\n }\n },\n\n /**\n * For functionalities on keyDown\n * Map a special key to a function of the instance/prototype\n * If you need different behaviour for ESC or TAB or arrows, you have to change\n * this map setting the name of a function that you build on the fabric.Itext or\n * your prototype.\n * the map change will affect all Instances unless you need for only some text Instances\n * in that case you have to clone this object and assign your Instance.\n * this.keysMap = Object.assign({}, this.keysMap);\n * The function must be in fabric.Itext.prototype.myFunction And will receive event as args[0]\n */\n keysMap: {\n 9: 'exitEditing',\n 27: 'exitEditing',\n 33: 'moveCursorUp',\n 34: 'moveCursorDown',\n 35: 'moveCursorRight',\n 36: 'moveCursorLeft',\n 37: 'moveCursorLeft',\n 38: 'moveCursorUp',\n 39: 'moveCursorRight',\n 40: 'moveCursorDown',\n },\n\n keysMapRtl: {\n 9: 'exitEditing',\n 27: 'exitEditing',\n 33: 'moveCursorUp',\n 34: 'moveCursorDown',\n 35: 'moveCursorLeft',\n 36: 'moveCursorRight',\n 37: 'moveCursorRight',\n 38: 'moveCursorUp',\n 39: 'moveCursorLeft',\n 40: 'moveCursorDown',\n },\n\n /**\n * For functionalities on keyUp + ctrl || cmd\n */\n ctrlKeysMapUp: {\n 67: 'copy',\n 88: 'cut',\n },\n\n /**\n * For functionalities on keyDown + ctrl || cmd\n */\n ctrlKeysMapDown: {\n 65: 'selectAll',\n },\n\n onClick: function () {\n // No need to trigger click event here, focus is enough to have the keyboard appear on Android\n this.hiddenTextarea && this.hiddenTextarea.focus();\n },\n\n /**\n * Override this method to customize cursor behavior on textbox blur\n */\n blur: function () {\n this.abortCursorAnimation();\n },\n\n /**\n * Handles keydown event\n * only used for arrows and combination of modifier keys.\n * @param {Event} e Event object\n */\n onKeyDown: function (e) {\n if (!this.isEditing) {\n return;\n }\n var keyMap = this.direction === 'rtl' ? this.keysMapRtl : this.keysMap;\n if (e.keyCode in keyMap) {\n this[keyMap[e.keyCode]](e);\n } else if (\n e.keyCode in this.ctrlKeysMapDown &&\n (e.ctrlKey || e.metaKey)\n ) {\n this[this.ctrlKeysMapDown[e.keyCode]](e);\n } else {\n return;\n }\n e.stopImmediatePropagation();\n e.preventDefault();\n if (e.keyCode >= 33 && e.keyCode <= 40) {\n // if i press an arrow key just update selection\n this.inCompositionMode = false;\n this.clearContextTop();\n this.renderCursorOrSelection();\n } else {\n this.canvas && this.canvas.requestRenderAll();\n }\n },\n\n /**\n * Handles keyup event\n * We handle KeyUp because ie11 and edge have difficulties copy/pasting\n * if a copy/cut event fired, keyup is dismissed\n * @param {Event} e Event object\n */\n onKeyUp: function (e) {\n if (!this.isEditing || this._copyDone || this.inCompositionMode) {\n this._copyDone = false;\n return;\n }\n if (e.keyCode in this.ctrlKeysMapUp && (e.ctrlKey || e.metaKey)) {\n this[this.ctrlKeysMapUp[e.keyCode]](e);\n } else {\n return;\n }\n e.stopImmediatePropagation();\n e.preventDefault();\n this.canvas && this.canvas.requestRenderAll();\n },\n\n /**\n * Handles onInput event\n * @param {Event} e Event object\n */\n onInput: function (e) {\n var fromPaste = this.fromPaste;\n this.fromPaste = false;\n e && e.stopPropagation();\n if (!this.isEditing) {\n return;\n }\n // decisions about style changes.\n var nextText = this._splitTextIntoLines(\n this.hiddenTextarea.value\n ).graphemeText,\n charCount = this._text.length,\n nextCharCount = nextText.length,\n removedText,\n insertedText,\n charDiff = nextCharCount - charCount,\n selectionStart = this.selectionStart,\n selectionEnd = this.selectionEnd,\n selection = selectionStart !== selectionEnd,\n copiedStyle,\n removeFrom,\n removeTo;\n if (this.hiddenTextarea.value === '') {\n this.styles = {};\n this.updateFromTextArea();\n this.fire('changed');\n if (this.canvas) {\n this.canvas.fire('text:changed', { target: this });\n this.canvas.requestRenderAll();\n }\n return;\n }\n\n var textareaSelection = this.fromStringToGraphemeSelection(\n this.hiddenTextarea.selectionStart,\n this.hiddenTextarea.selectionEnd,\n this.hiddenTextarea.value\n );\n var backDelete = selectionStart > textareaSelection.selectionStart;\n\n if (selection) {\n removedText = this._text.slice(selectionStart, selectionEnd);\n charDiff += selectionEnd - selectionStart;\n } else if (nextCharCount < charCount) {\n if (backDelete) {\n removedText = this._text.slice(\n selectionEnd + charDiff,\n selectionEnd\n );\n } else {\n removedText = this._text.slice(\n selectionStart,\n selectionStart - charDiff\n );\n }\n }\n insertedText = nextText.slice(\n textareaSelection.selectionEnd - charDiff,\n textareaSelection.selectionEnd\n );\n if (removedText && removedText.length) {\n if (insertedText.length) {\n // let's copy some style before deleting.\n // we want to copy the style before the cursor OR the style at the cursor if selection\n // is bigger than 0.\n copiedStyle = this.getSelectionStyles(\n selectionStart,\n selectionStart + 1,\n false\n );\n // now duplicate the style one for each inserted text.\n copiedStyle = insertedText.map(function () {\n // this return an array of references, but that is fine since we are\n // copying the style later.\n return copiedStyle[0];\n });\n }\n if (selection) {\n removeFrom = selectionStart;\n removeTo = selectionEnd;\n } else if (backDelete) {\n // detect differences between forwardDelete and backDelete\n removeFrom = selectionEnd - removedText.length;\n removeTo = selectionEnd;\n } else {\n removeFrom = selectionEnd;\n removeTo = selectionEnd + removedText.length;\n }\n this.removeStyleFromTo(removeFrom, removeTo);\n }\n if (insertedText.length) {\n if (\n fromPaste &&\n insertedText.join('') === fabric.copiedText &&\n !config.disableStyleCopyPaste\n ) {\n copiedStyle = fabric.copiedTextStyle;\n }\n this.insertNewStyleBlock(insertedText, selectionStart, copiedStyle);\n }\n this.updateFromTextArea();\n this.fire('changed');\n if (this.canvas) {\n this.canvas.fire('text:changed', { target: this });\n this.canvas.requestRenderAll();\n }\n },\n /**\n * Composition start\n */\n onCompositionStart: function () {\n this.inCompositionMode = true;\n },\n\n /**\n * Composition end\n */\n onCompositionEnd: function () {\n this.inCompositionMode = false;\n },\n\n // /**\n // * Composition update\n // */\n onCompositionUpdate: function (e) {\n this.compositionStart = e.target.selectionStart;\n this.compositionEnd = e.target.selectionEnd;\n this.updateTextareaPosition();\n },\n\n /**\n * Copies selected text\n * @param {Event} e Event object\n */\n copy: function () {\n if (this.selectionStart === this.selectionEnd) {\n //do not cut-copy if no selection\n return;\n }\n\n fabric.copiedText = this.getSelectedText();\n if (!config.disableStyleCopyPaste) {\n fabric.copiedTextStyle = this.getSelectionStyles(\n this.selectionStart,\n this.selectionEnd,\n true\n );\n } else {\n fabric.copiedTextStyle = null;\n }\n this._copyDone = true;\n },\n\n /**\n * Pastes text\n * @param {Event} e Event object\n */\n paste: function () {\n this.fromPaste = true;\n },\n\n /**\n * @private\n * @param {Event} e Event object\n * @return {Object} Clipboard data object\n */\n _getClipboardData: function (e) {\n return (e && e.clipboardData) || fabric.window.clipboardData;\n },\n\n /**\n * Finds the width in pixels before the cursor on the same line\n * @private\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @return {Number} widthBeforeCursor width before cursor\n */\n _getWidthBeforeCursor: function (lineIndex, charIndex) {\n var widthBeforeCursor = this._getLineLeftOffset(lineIndex),\n bound;\n\n if (charIndex > 0) {\n bound = this.__charBounds[lineIndex][charIndex - 1];\n widthBeforeCursor += bound.left + bound.width;\n }\n return widthBeforeCursor;\n },\n\n /**\n * Gets start offset of a selection\n * @param {Event} e Event object\n * @param {Boolean} isRight\n * @return {Number}\n */\n getDownCursorOffset: function (e, isRight) {\n var selectionProp = this._getSelectionForOffset(e, isRight),\n cursorLocation = this.get2DCursorLocation(selectionProp),\n lineIndex = cursorLocation.lineIndex;\n // if on last line, down cursor goes to end of line\n if (\n lineIndex === this._textLines.length - 1 ||\n e.metaKey ||\n e.keyCode === 34\n ) {\n // move to the end of a text\n return this._text.length - selectionProp;\n }\n var charIndex = cursorLocation.charIndex,\n widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex),\n indexOnOtherLine = this._getIndexOnLine(\n lineIndex + 1,\n widthBeforeCursor\n ),\n textAfterCursor = this._textLines[lineIndex].slice(charIndex);\n return (\n textAfterCursor.length +\n indexOnOtherLine +\n 1 +\n this.missingNewlineOffset(lineIndex)\n );\n },\n\n /**\n * private\n * Helps finding if the offset should be counted from Start or End\n * @param {Event} e Event object\n * @param {Boolean} isRight\n * @return {Number}\n */\n _getSelectionForOffset: function (e, isRight) {\n if (\n e.shiftKey &&\n this.selectionStart !== this.selectionEnd &&\n isRight\n ) {\n return this.selectionEnd;\n } else {\n return this.selectionStart;\n }\n },\n\n /**\n * @param {Event} e Event object\n * @param {Boolean} isRight\n * @return {Number}\n */\n getUpCursorOffset: function (e, isRight) {\n var selectionProp = this._getSelectionForOffset(e, isRight),\n cursorLocation = this.get2DCursorLocation(selectionProp),\n lineIndex = cursorLocation.lineIndex;\n if (lineIndex === 0 || e.metaKey || e.keyCode === 33) {\n // if on first line, up cursor goes to start of line\n return -selectionProp;\n }\n var charIndex = cursorLocation.charIndex,\n widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex),\n indexOnOtherLine = this._getIndexOnLine(\n lineIndex - 1,\n widthBeforeCursor\n ),\n textBeforeCursor = this._textLines[lineIndex].slice(0, charIndex),\n missingNewlineOffset = this.missingNewlineOffset(lineIndex - 1);\n // return a negative offset\n return (\n -this._textLines[lineIndex - 1].length +\n indexOnOtherLine -\n textBeforeCursor.length +\n (1 - missingNewlineOffset)\n );\n },\n\n /**\n * for a given width it founds the matching character.\n * @private\n */\n _getIndexOnLine: function (lineIndex, width) {\n var line = this._textLines[lineIndex],\n lineLeftOffset = this._getLineLeftOffset(lineIndex),\n widthOfCharsOnLine = lineLeftOffset,\n indexOnLine = 0,\n charWidth,\n foundMatch;\n\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n charWidth = this.__charBounds[lineIndex][j].width;\n widthOfCharsOnLine += charWidth;\n if (widthOfCharsOnLine > width) {\n foundMatch = true;\n var leftEdge = widthOfCharsOnLine - charWidth,\n rightEdge = widthOfCharsOnLine,\n offsetFromLeftEdge = Math.abs(leftEdge - width),\n offsetFromRightEdge = Math.abs(rightEdge - width);\n\n indexOnLine = offsetFromRightEdge < offsetFromLeftEdge ? j : j - 1;\n break;\n }\n }\n\n // reached end\n if (!foundMatch) {\n indexOnLine = line.length - 1;\n }\n\n return indexOnLine;\n },\n\n /**\n * Moves cursor down\n * @param {Event} e Event object\n */\n moveCursorDown: function (e) {\n if (\n this.selectionStart >= this._text.length &&\n this.selectionEnd >= this._text.length\n ) {\n return;\n }\n this._moveCursorUpOrDown('Down', e);\n },\n\n /**\n * Moves cursor up\n * @param {Event} e Event object\n */\n moveCursorUp: function (e) {\n if (this.selectionStart === 0 && this.selectionEnd === 0) {\n return;\n }\n this._moveCursorUpOrDown('Up', e);\n },\n\n /**\n * Moves cursor up or down, fires the events\n * @param {String} direction 'Up' or 'Down'\n * @param {Event} e Event object\n */\n _moveCursorUpOrDown: function (direction, e) {\n // getUpCursorOffset\n // getDownCursorOffset\n var action = 'get' + direction + 'CursorOffset',\n offset = this[action](e, this._selectionDirection === 'right');\n if (e.shiftKey) {\n this.moveCursorWithShift(offset);\n } else {\n this.moveCursorWithoutShift(offset);\n }\n if (offset !== 0) {\n this.setSelectionInBoundaries();\n this.abortCursorAnimation();\n this._currentCursorOpacity = 1;\n this.initDelayedCursor();\n this._fireSelectionChanged();\n this._updateTextarea();\n }\n },\n\n /**\n * Moves cursor with shift\n * @param {Number} offset\n */\n moveCursorWithShift: function (offset) {\n var newSelection =\n this._selectionDirection === 'left'\n ? this.selectionStart + offset\n : this.selectionEnd + offset;\n this.setSelectionStartEndWithShift(\n this.selectionStart,\n this.selectionEnd,\n newSelection\n );\n return offset !== 0;\n },\n\n /**\n * Moves cursor up without shift\n * @param {Number} offset\n */\n moveCursorWithoutShift: function (offset) {\n if (offset < 0) {\n this.selectionStart += offset;\n this.selectionEnd = this.selectionStart;\n } else {\n this.selectionEnd += offset;\n this.selectionStart = this.selectionEnd;\n }\n return offset !== 0;\n },\n\n /**\n * Moves cursor left\n * @param {Event} e Event object\n */\n moveCursorLeft: function (e) {\n if (this.selectionStart === 0 && this.selectionEnd === 0) {\n return;\n }\n this._moveCursorLeftOrRight('Left', e);\n },\n\n /**\n * @private\n * @return {Boolean} true if a change happened\n */\n _move: function (e, prop, direction) {\n var newValue;\n if (e.altKey) {\n newValue = this['findWordBoundary' + direction](this[prop]);\n } else if (e.metaKey || e.keyCode === 35 || e.keyCode === 36) {\n newValue = this['findLineBoundary' + direction](this[prop]);\n } else {\n this[prop] += direction === 'Left' ? -1 : 1;\n return true;\n }\n if (typeof newValue !== 'undefined' && this[prop] !== newValue) {\n this[prop] = newValue;\n return true;\n }\n },\n\n /**\n * @private\n */\n _moveLeft: function (e, prop) {\n return this._move(e, prop, 'Left');\n },\n\n /**\n * @private\n */\n _moveRight: function (e, prop) {\n return this._move(e, prop, 'Right');\n },\n\n /**\n * Moves cursor left without keeping selection\n * @param {Event} e\n */\n moveCursorLeftWithoutShift: function (e) {\n var change = true;\n this._selectionDirection = 'left';\n\n // only move cursor when there is no selection,\n // otherwise we discard it, and leave cursor on same place\n if (\n this.selectionEnd === this.selectionStart &&\n this.selectionStart !== 0\n ) {\n change = this._moveLeft(e, 'selectionStart');\n }\n this.selectionEnd = this.selectionStart;\n return change;\n },\n\n /**\n * Moves cursor left while keeping selection\n * @param {Event} e\n */\n moveCursorLeftWithShift: function (e) {\n if (\n this._selectionDirection === 'right' &&\n this.selectionStart !== this.selectionEnd\n ) {\n return this._moveLeft(e, 'selectionEnd');\n } else if (this.selectionStart !== 0) {\n this._selectionDirection = 'left';\n return this._moveLeft(e, 'selectionStart');\n }\n },\n\n /**\n * Moves cursor right\n * @param {Event} e Event object\n */\n moveCursorRight: function (e) {\n if (\n this.selectionStart >= this._text.length &&\n this.selectionEnd >= this._text.length\n ) {\n return;\n }\n this._moveCursorLeftOrRight('Right', e);\n },\n\n /**\n * Moves cursor right or Left, fires event\n * @param {String} direction 'Left', 'Right'\n * @param {Event} e Event object\n */\n _moveCursorLeftOrRight: function (direction, e) {\n var actionName = 'moveCursor' + direction + 'With';\n this._currentCursorOpacity = 1;\n\n if (e.shiftKey) {\n actionName += 'Shift';\n } else {\n actionName += 'outShift';\n }\n if (this[actionName](e)) {\n this.abortCursorAnimation();\n this.initDelayedCursor();\n this._fireSelectionChanged();\n this._updateTextarea();\n }\n },\n\n /**\n * Moves cursor right while keeping selection\n * @param {Event} e\n */\n moveCursorRightWithShift: function (e) {\n if (\n this._selectionDirection === 'left' &&\n this.selectionStart !== this.selectionEnd\n ) {\n return this._moveRight(e, 'selectionStart');\n } else if (this.selectionEnd !== this._text.length) {\n this._selectionDirection = 'right';\n return this._moveRight(e, 'selectionEnd');\n }\n },\n\n /**\n * Moves cursor right without keeping selection\n * @param {Event} e Event object\n */\n moveCursorRightWithoutShift: function (e) {\n var changed = true;\n this._selectionDirection = 'right';\n\n if (this.selectionStart === this.selectionEnd) {\n changed = this._moveRight(e, 'selectionStart');\n this.selectionEnd = this.selectionStart;\n } else {\n this.selectionStart = this.selectionEnd;\n }\n return changed;\n },\n\n /**\n * Removes characters from start/end\n * start/end ar per grapheme position in _text array.\n *\n * @param {Number} start\n * @param {Number} end default to start + 1\n */\n removeChars: function (start, end) {\n if (typeof end === 'undefined') {\n end = start + 1;\n }\n this.removeStyleFromTo(start, end);\n this._text.splice(start, end - start);\n this.text = this._text.join('');\n this.set('dirty', true);\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n this.setCoords();\n }\n this._removeExtraneousStyles();\n },\n\n /**\n * insert characters at start position, before start position.\n * start equal 1 it means the text get inserted between actual grapheme 0 and 1\n * if style array is provided, it must be as the same length of text in graphemes\n * if end is provided and is bigger than start, old text is replaced.\n * start/end ar per grapheme position in _text array.\n *\n * @param {String} text text to insert\n * @param {Array} style array of style objects\n * @param {Number} start\n * @param {Number} end default to start + 1\n */\n insertChars: function (text, style, start, end) {\n if (typeof end === 'undefined') {\n end = start;\n }\n if (end > start) {\n this.removeStyleFromTo(start, end);\n }\n var graphemes = this.graphemeSplit(text);\n this.insertNewStyleBlock(graphemes, start, style);\n this._text = [].concat(\n this._text.slice(0, start),\n graphemes,\n this._text.slice(end)\n );\n this.text = this._text.join('');\n this.set('dirty', true);\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n this.setCoords();\n }\n this._removeExtraneousStyles();\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Color } from '../color';\nimport { config } from '../config';\n\n/* _TO_SVG_START_ */\n(function (global) {\n var fabric = global.fabric,\n toFixed = fabric.util.toFixed,\n multipleSpacesRegex = / +/g;\n\n fabric.util.object.extend(\n fabric.Text.prototype,\n /** @lends fabric.Text.prototype */ {\n /**\n * Returns SVG representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n _toSVG: function () {\n var offsets = this._getSVGLeftTopOffsets(),\n textAndBg = this._getSVGTextAndBg(offsets.textTop, offsets.textLeft);\n return this._wrapSVGTextAndBg(textAndBg);\n },\n\n /**\n * Returns svg representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toSVG: function (reviver) {\n return this._createBaseSVGMarkup(this._toSVG(), {\n reviver: reviver,\n noStyle: true,\n withShadow: true,\n });\n },\n\n /**\n * @private\n */\n _getSVGLeftTopOffsets: function () {\n return {\n textLeft: -this.width / 2,\n textTop: -this.height / 2,\n lineTop: this.getHeightOfLine(0),\n };\n },\n\n /**\n * @private\n */\n _wrapSVGTextAndBg: function (textAndBg) {\n var noShadow = true,\n textDecoration = this.getSvgTextDecoration(this);\n return [\n textAndBg.textBgRects.join(''),\n '\\t\\t',\n textAndBg.textSpans.join(''),\n '\\n',\n ];\n },\n\n /**\n * @private\n * @param {Number} textTopOffset Text top offset\n * @param {Number} textLeftOffset Text left offset\n * @return {Object}\n */\n _getSVGTextAndBg: function (textTopOffset, textLeftOffset) {\n var textSpans = [],\n textBgRects = [],\n height = textTopOffset,\n lineOffset;\n // bounding-box background\n this._setSVGBg(textBgRects);\n\n // text and text-background\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n lineOffset = this._getLineLeftOffset(i);\n if (this.direction === 'rtl') {\n lineOffset += this.width;\n }\n if (\n this.textBackgroundColor ||\n this.styleHas('textBackgroundColor', i)\n ) {\n this._setSVGTextLineBg(\n textBgRects,\n i,\n textLeftOffset + lineOffset,\n height\n );\n }\n this._setSVGTextLineText(\n textSpans,\n i,\n textLeftOffset + lineOffset,\n height\n );\n height += this.getHeightOfLine(i);\n }\n\n return {\n textSpans: textSpans,\n textBgRects: textBgRects,\n };\n },\n\n /**\n * @private\n */\n _createTextCharSpan: function (_char, styleDecl, left, top) {\n var shouldUseWhitespace =\n _char !== _char.trim() || _char.match(multipleSpacesRegex),\n styleProps = this.getSvgSpanStyles(styleDecl, shouldUseWhitespace),\n fillStyles = styleProps ? 'style=\"' + styleProps + '\"' : '',\n dy = styleDecl.deltaY,\n dySpan = '',\n NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n if (dy) {\n dySpan = ' dy=\"' + toFixed(dy, NUM_FRACTION_DIGITS) + '\" ';\n }\n return [\n '',\n fabric.util.string.escapeXml(_char),\n '',\n ].join('');\n },\n\n _setSVGTextLineText: function (\n textSpans,\n lineIndex,\n textLeftOffset,\n textTopOffset\n ) {\n // set proper line offset\n var lineHeight = this.getHeightOfLine(lineIndex),\n isJustify = this.textAlign.indexOf('justify') !== -1,\n actualStyle,\n nextStyle,\n charsToRender = '',\n charBox,\n style,\n boxWidth = 0,\n line = this._textLines[lineIndex],\n timeToRender;\n\n textTopOffset +=\n (lineHeight * (1 - this._fontSizeFraction)) / this.lineHeight;\n for (var i = 0, len = line.length - 1; i <= len; i++) {\n timeToRender = i === len || this.charSpacing;\n charsToRender += line[i];\n charBox = this.__charBounds[lineIndex][i];\n if (boxWidth === 0) {\n textLeftOffset += charBox.kernedWidth - charBox.width;\n boxWidth += charBox.width;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n if (isJustify && !timeToRender) {\n if (this._reSpaceAndTab.test(line[i])) {\n timeToRender = true;\n }\n }\n if (!timeToRender) {\n // if we have charSpacing, we render char by char\n actualStyle =\n actualStyle || this.getCompleteStyleDeclaration(lineIndex, i);\n nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1);\n timeToRender = fabric.util.hasStyleChanged(\n actualStyle,\n nextStyle,\n true\n );\n }\n if (timeToRender) {\n style = this._getStyleDeclaration(lineIndex, i) || {};\n textSpans.push(\n this._createTextCharSpan(\n charsToRender,\n style,\n textLeftOffset,\n textTopOffset\n )\n );\n charsToRender = '';\n actualStyle = nextStyle;\n if (this.direction === 'rtl') {\n textLeftOffset -= boxWidth;\n } else {\n textLeftOffset += boxWidth;\n }\n boxWidth = 0;\n }\n }\n },\n\n _pushTextBgRect: function (textBgRects, color, left, top, width, height) {\n var NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n textBgRects.push(\n '\\t\\t\\n'\n );\n },\n\n _setSVGTextLineBg: function (textBgRects, i, leftOffset, textTopOffset) {\n var line = this._textLines[i],\n heightOfLine = this.getHeightOfLine(i) / this.lineHeight,\n boxWidth = 0,\n boxStart = 0,\n charBox,\n currentColor,\n lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor');\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n charBox = this.__charBounds[i][j];\n currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor');\n if (currentColor !== lastColor) {\n lastColor &&\n this._pushTextBgRect(\n textBgRects,\n lastColor,\n leftOffset + boxStart,\n textTopOffset,\n boxWidth,\n heightOfLine\n );\n boxStart = charBox.left;\n boxWidth = charBox.width;\n lastColor = currentColor;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n }\n currentColor &&\n this._pushTextBgRect(\n textBgRects,\n currentColor,\n leftOffset + boxStart,\n textTopOffset,\n boxWidth,\n heightOfLine\n );\n },\n\n /**\n * Adobe Illustrator (at least CS5) is unable to render rgba()-based fill values\n * we work around it by \"moving\" alpha channel into opacity attribute and setting fill's alpha to 1\n *\n * @private\n * @param {*} value\n * @return {String}\n */\n _getFillAttributes: function (value) {\n var fillColor =\n value && typeof value === 'string' ? new Color(value) : '';\n if (\n !fillColor ||\n !fillColor.getSource() ||\n fillColor.getAlpha() === 1\n ) {\n return 'fill=\"' + value + '\"';\n }\n return (\n 'opacity=\"' +\n fillColor.getAlpha() +\n '\" fill=\"' +\n fillColor.setAlpha(1).toRgb() +\n '\"'\n );\n },\n\n /**\n * @private\n */\n _getSVGLineTopOffset: function (lineIndex) {\n var lineTopOffset = 0,\n lastHeight = 0;\n for (var j = 0; j < lineIndex; j++) {\n lineTopOffset += this.getHeightOfLine(j);\n }\n lastHeight = this.getHeightOfLine(j);\n return {\n lineTop: lineTopOffset,\n offset:\n ((this._fontSizeMult - this._fontSizeFraction) * lastHeight) /\n (this.lineHeight * this._fontSizeMult),\n };\n },\n\n /**\n * Returns styles-string for svg-export\n * @param {Boolean} skipShadow a boolean to skip shadow filter output\n * @return {String}\n */\n getSvgStyles: function (skipShadow) {\n var svgStyle = fabric.Object.prototype.getSvgStyles.call(\n this,\n skipShadow\n );\n return svgStyle + ' white-space: pre;';\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n/* _TO_SVG_END_ */\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n\n /**\n * Textbox class, based on IText, allows the user to resize the text rectangle\n * and wraps lines automatically. Textboxes have their Y scaling locked, the\n * user can only change width. Height is adjusted automatically based on the\n * wrapping of lines.\n * @class fabric.Textbox\n * @extends fabric.IText\n * @mixes fabric.Observable\n * @return {fabric.Textbox} thisArg\n * @see {@link fabric.Textbox#initialize} for constructor definition\n */\n fabric.Textbox = fabric.util.createClass(fabric.IText, fabric.Observable, {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'textbox',\n\n /**\n * Minimum width of textbox, in pixels.\n * @type Number\n * @default\n */\n minWidth: 20,\n\n /**\n * Minimum calculated width of a textbox, in pixels.\n * fixed to 2 so that an empty textbox cannot go to 0\n * and is still selectable without text.\n * @type Number\n * @default\n */\n dynamicMinWidth: 2,\n\n /**\n * Cached array of text wrapping.\n * @type Array\n */\n __cachedLines: null,\n\n /**\n * Override standard Object class values\n */\n lockScalingFlip: true,\n\n /**\n * Override standard Object class values\n * Textbox needs this on false\n */\n noScaleCache: false,\n\n /**\n * Properties which when set cause object to change dimensions\n * @type Object\n * @private\n */\n _dimensionAffectingProps:\n fabric.Text.prototype._dimensionAffectingProps.concat('width'),\n\n /**\n * Use this regular expression to split strings in breakable lines\n * @private\n */\n _wordJoiners: /[ \\t\\r]/,\n\n /**\n * Use this boolean property in order to split strings that have no white space concept.\n * this is a cheap way to help with chinese/japanese\n * @type Boolean\n * @since 2.6.0\n */\n splitByGrapheme: false,\n\n /**\n * Unlike superclass's version of this function, Textbox does not update\n * its width.\n * @private\n * @override\n */\n initDimensions: function () {\n if (this.__skipDimension) {\n return;\n }\n this.isEditing && this.initDelayedCursor();\n this.clearContextTop();\n this._clearCache();\n // clear dynamicMinWidth as it will be different after we re-wrap line\n this.dynamicMinWidth = 0;\n // wrap lines\n this._styleMap = this._generateStyleMap(this._splitText());\n // if after wrapping, the width is smaller than dynamicMinWidth, change the width and re-wrap\n if (this.dynamicMinWidth > this.width) {\n this._set('width', this.dynamicMinWidth);\n }\n if (this.textAlign.indexOf('justify') !== -1) {\n // once text is measured we need to make space fatter to make justified text.\n this.enlargeSpaces();\n }\n // clear cache and re-calculate height\n this.height = this.calcTextHeight();\n this.saveState({ propertySet: '_dimensionAffectingProps' });\n },\n\n /**\n * Generate an object that translates the style object so that it is\n * broken up by visual lines (new lines and automatic wrapping).\n * The original text styles object is broken up by actual lines (new lines only),\n * which is only sufficient for Text / IText\n * @private\n */\n _generateStyleMap: function (textInfo) {\n var realLineCount = 0,\n realLineCharCount = 0,\n charCount = 0,\n map = {};\n\n for (var i = 0; i < textInfo.graphemeLines.length; i++) {\n if (textInfo.graphemeText[charCount] === '\\n' && i > 0) {\n realLineCharCount = 0;\n charCount++;\n realLineCount++;\n } else if (\n !this.splitByGrapheme &&\n this._reSpaceAndTab.test(textInfo.graphemeText[charCount]) &&\n i > 0\n ) {\n // this case deals with space's that are removed from end of lines when wrapping\n realLineCharCount++;\n charCount++;\n }\n\n map[i] = { line: realLineCount, offset: realLineCharCount };\n\n charCount += textInfo.graphemeLines[i].length;\n realLineCharCount += textInfo.graphemeLines[i].length;\n }\n\n return map;\n },\n\n /**\n * Returns true if object has a style property or has it on a specified line\n * @param {Number} lineIndex\n * @return {Boolean}\n */\n styleHas: function (property, lineIndex) {\n if (this._styleMap && !this.isWrapping) {\n var map = this._styleMap[lineIndex];\n if (map) {\n lineIndex = map.line;\n }\n }\n return fabric.Text.prototype.styleHas.call(this, property, lineIndex);\n },\n\n /**\n * Returns true if object has no styling or no styling in a line\n * @param {Number} lineIndex , lineIndex is on wrapped lines.\n * @return {Boolean}\n */\n isEmptyStyles: function (lineIndex) {\n if (!this.styles) {\n return true;\n }\n var offset = 0,\n nextLineIndex = lineIndex + 1,\n nextOffset,\n obj,\n shouldLimit = false,\n map = this._styleMap[lineIndex],\n mapNextLine = this._styleMap[lineIndex + 1];\n if (map) {\n lineIndex = map.line;\n offset = map.offset;\n }\n if (mapNextLine) {\n nextLineIndex = mapNextLine.line;\n shouldLimit = nextLineIndex === lineIndex;\n nextOffset = mapNextLine.offset;\n }\n obj =\n typeof lineIndex === 'undefined'\n ? this.styles\n : { line: this.styles[lineIndex] };\n for (var p1 in obj) {\n for (var p2 in obj[p1]) {\n if (p2 >= offset && (!shouldLimit || p2 < nextOffset)) {\n // eslint-disable-next-line no-unused-vars\n for (var p3 in obj[p1][p2]) {\n return false;\n }\n }\n }\n }\n return true;\n },\n\n /**\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @private\n */\n _getStyleDeclaration: function (lineIndex, charIndex) {\n if (this._styleMap && !this.isWrapping) {\n var map = this._styleMap[lineIndex];\n if (!map) {\n return null;\n }\n lineIndex = map.line;\n charIndex = map.offset + charIndex;\n }\n return this.callSuper('_getStyleDeclaration', lineIndex, charIndex);\n },\n\n /**\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @param {Object} style\n * @private\n */\n _setStyleDeclaration: function (lineIndex, charIndex, style) {\n var map = this._styleMap[lineIndex];\n lineIndex = map.line;\n charIndex = map.offset + charIndex;\n\n this.styles[lineIndex][charIndex] = style;\n },\n\n /**\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @private\n */\n _deleteStyleDeclaration: function (lineIndex, charIndex) {\n var map = this._styleMap[lineIndex];\n lineIndex = map.line;\n charIndex = map.offset + charIndex;\n delete this.styles[lineIndex][charIndex];\n },\n\n /**\n * probably broken need a fix\n * Returns the real style line that correspond to the wrapped lineIndex line\n * Used just to verify if the line does exist or not.\n * @param {Number} lineIndex\n * @returns {Boolean} if the line exists or not\n * @private\n */\n _getLineStyle: function (lineIndex) {\n var map = this._styleMap[lineIndex];\n return !!this.styles[map.line];\n },\n\n /**\n * Set the line style to an empty object so that is initialized\n * @param {Number} lineIndex\n * @param {Object} style\n * @private\n */\n _setLineStyle: function (lineIndex) {\n var map = this._styleMap[lineIndex];\n this.styles[map.line] = {};\n },\n\n /**\n * Wraps text using the 'width' property of Textbox. First this function\n * splits text on newlines, so we preserve newlines entered by the user.\n * Then it wraps each line using the width of the Textbox by calling\n * _wrapLine().\n * @param {Array} lines The string array of text that is split into lines\n * @param {Number} desiredWidth width you want to wrap to\n * @returns {Array} Array of lines\n */\n _wrapText: function (lines, desiredWidth) {\n var wrapped = [],\n i;\n this.isWrapping = true;\n for (i = 0; i < lines.length; i++) {\n wrapped.push.apply(wrapped, this._wrapLine(lines[i], i, desiredWidth));\n }\n this.isWrapping = false;\n return wrapped;\n },\n\n /**\n * Helper function to measure a string of text, given its lineIndex and charIndex offset\n * It gets called when charBounds are not available yet.\n * Override if necessary\n * Use with {@link fabric.Textbox#wordSplit}\n *\n * @param {CanvasRenderingContext2D} ctx\n * @param {String} text\n * @param {number} lineIndex\n * @param {number} charOffset\n * @returns {number}\n */\n _measureWord: function (word, lineIndex, charOffset) {\n var width = 0,\n prevGrapheme,\n skipLeft = true;\n charOffset = charOffset || 0;\n for (var i = 0, len = word.length; i < len; i++) {\n var box = this._getGraphemeBox(\n word[i],\n lineIndex,\n i + charOffset,\n prevGrapheme,\n skipLeft\n );\n width += box.kernedWidth;\n prevGrapheme = word[i];\n }\n return width;\n },\n\n /**\n * Override this method to customize word splitting\n * Use with {@link fabric.Textbox#_measureWord}\n * @param {string} value\n * @returns {string[]} array of words\n */\n wordSplit: function (value) {\n return value.split(this._wordJoiners);\n },\n\n /**\n * Wraps a line of text using the width of the Textbox and a context.\n * @param {Array} line The grapheme array that represent the line\n * @param {Number} lineIndex\n * @param {Number} desiredWidth width you want to wrap the line to\n * @param {Number} reservedSpace space to remove from wrapping for custom functionalities\n * @returns {Array} Array of line(s) into which the given text is wrapped\n * to.\n */\n _wrapLine: function (_line, lineIndex, desiredWidth, reservedSpace) {\n var lineWidth = 0,\n splitByGrapheme = this.splitByGrapheme,\n graphemeLines = [],\n line = [],\n // spaces in different languages?\n words = splitByGrapheme\n ? this.graphemeSplit(_line)\n : this.wordSplit(_line),\n word = '',\n offset = 0,\n infix = splitByGrapheme ? '' : ' ',\n wordWidth = 0,\n infixWidth = 0,\n largestWordWidth = 0,\n lineJustStarted = true,\n additionalSpace = this._getWidthOfCharSpacing(),\n reservedSpace = reservedSpace || 0;\n // fix a difference between split and graphemeSplit\n if (words.length === 0) {\n words.push([]);\n }\n desiredWidth -= reservedSpace;\n // measure words\n var data = words.map(\n function (word) {\n // if using splitByGrapheme words are already in graphemes.\n word = splitByGrapheme ? word : this.graphemeSplit(word);\n var width = this._measureWord(word, lineIndex, offset);\n largestWordWidth = Math.max(width, largestWordWidth);\n offset += word.length + 1;\n return { word: word, width: width };\n }.bind(this)\n );\n var maxWidth = Math.max(\n desiredWidth,\n largestWordWidth,\n this.dynamicMinWidth\n );\n // layout words\n offset = 0;\n for (var i = 0; i < words.length; i++) {\n word = data[i].word;\n wordWidth = data[i].width;\n offset += word.length;\n\n lineWidth += infixWidth + wordWidth - additionalSpace;\n if (lineWidth > maxWidth && !lineJustStarted) {\n graphemeLines.push(line);\n line = [];\n lineWidth = wordWidth;\n lineJustStarted = true;\n } else {\n lineWidth += additionalSpace;\n }\n\n if (!lineJustStarted && !splitByGrapheme) {\n line.push(infix);\n }\n line = line.concat(word);\n\n infixWidth = splitByGrapheme\n ? 0\n : this._measureWord([infix], lineIndex, offset);\n offset++;\n lineJustStarted = false;\n }\n\n i && graphemeLines.push(line);\n\n if (largestWordWidth + reservedSpace > this.dynamicMinWidth) {\n this.dynamicMinWidth =\n largestWordWidth - additionalSpace + reservedSpace;\n }\n return graphemeLines;\n },\n\n /**\n * Detect if the text line is ended with an hard break\n * text and itext do not have wrapping, return false\n * @param {Number} lineIndex text to split\n * @return {Boolean}\n */\n isEndOfWrapping: function (lineIndex) {\n if (!this._styleMap[lineIndex + 1]) {\n // is last line, return true;\n return true;\n }\n if (\n this._styleMap[lineIndex + 1].line !== this._styleMap[lineIndex].line\n ) {\n // this is last line before a line break, return true;\n return true;\n }\n return false;\n },\n\n /**\n * Detect if a line has a linebreak and so we need to account for it when moving\n * and counting style.\n * @return Number\n */\n missingNewlineOffset: function (lineIndex) {\n if (this.splitByGrapheme) {\n return this.isEndOfWrapping(lineIndex) ? 1 : 0;\n }\n return 1;\n },\n\n /**\n * Gets lines of text to render in the Textbox. This function calculates\n * text wrapping on the fly every time it is called.\n * @param {String} text text to split\n * @returns {Array} Array of lines in the Textbox.\n * @override\n */\n _splitTextIntoLines: function (text) {\n var newText = fabric.Text.prototype._splitTextIntoLines.call(this, text),\n graphemeLines = this._wrapText(newText.lines, this.width),\n lines = new Array(graphemeLines.length);\n for (var i = 0; i < graphemeLines.length; i++) {\n lines[i] = graphemeLines[i].join('');\n }\n newText.lines = lines;\n newText.graphemeLines = graphemeLines;\n return newText;\n },\n\n getMinWidth: function () {\n return Math.max(this.minWidth, this.dynamicMinWidth);\n },\n\n _removeExtraneousStyles: function () {\n var linesToKeep = {};\n for (var prop in this._styleMap) {\n if (this._textLines[prop]) {\n linesToKeep[this._styleMap[prop].line] = 1;\n }\n }\n for (var prop in this.styles) {\n if (!linesToKeep[prop]) {\n delete this.styles[prop];\n }\n }\n },\n\n /**\n * Returns object representation of an instance\n * @method toObject\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this.callSuper(\n 'toObject',\n ['minWidth', 'splitByGrapheme'].concat(propertiesToInclude)\n );\n },\n });\n\n /**\n * Returns fabric.Textbox instance from an object representation\n * @static\n * @memberOf fabric.Textbox\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Textbox.fromObject = function (object) {\n var styles = fabric.util.stylesFromArray(object.styles, object.text);\n //copy object to prevent mutation\n var objCopy = Object.assign({}, object, { styles: styles });\n return fabric.Object._fromObject(fabric.Textbox, objCopy, {\n extraParam: 'text',\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { degreesToRadians } from '../util/misc/radiansDegreesConversion';\n\n/**\n * Render a round control, as per fabric features.\n * This function is written to respect object properties like transparentCorners, cornerSize\n * cornerColor, cornerStrokeColor\n * plus the addition of offsetY and offsetX.\n * @param {CanvasRenderingContext2D} ctx context to render on\n * @param {Number} left x coordinate where the control center should be\n * @param {Number} top y coordinate where the control center should be\n * @param {Object} styleOverride override for fabric.Object controls style\n * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls\n */\nexport function renderCircleControl(\n ctx,\n left,\n top,\n styleOverride,\n fabricObject\n) {\n styleOverride = styleOverride || {};\n var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize,\n ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize,\n transparentCorners =\n typeof styleOverride.transparentCorners !== 'undefined'\n ? styleOverride.transparentCorners\n : fabricObject.transparentCorners,\n methodName = transparentCorners ? 'stroke' : 'fill',\n stroke =\n !transparentCorners &&\n (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor),\n myLeft = left,\n myTop = top,\n size;\n ctx.save();\n ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor;\n ctx.strokeStyle =\n styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor;\n // as soon as fabric react v5, remove ie11, use proper ellipse code.\n if (xSize > ySize) {\n size = xSize;\n ctx.scale(1.0, ySize / xSize);\n myTop = (top * xSize) / ySize;\n } else if (ySize > xSize) {\n size = ySize;\n ctx.scale(xSize / ySize, 1.0);\n myLeft = (left * ySize) / xSize;\n } else {\n size = xSize;\n }\n // this is still wrong\n ctx.lineWidth = 1;\n ctx.beginPath();\n ctx.arc(myLeft, myTop, size / 2, 0, 2 * Math.PI, false);\n ctx[methodName]();\n if (stroke) {\n ctx.stroke();\n }\n ctx.restore();\n}\n\n/**\n * Render a square control, as per fabric features.\n * This function is written to respect object properties like transparentCorners, cornerSize\n * cornerColor, cornerStrokeColor\n * plus the addition of offsetY and offsetX.\n * @param {CanvasRenderingContext2D} ctx context to render on\n * @param {Number} left x coordinate where the control center should be\n * @param {Number} top y coordinate where the control center should be\n * @param {Object} styleOverride override for fabric.Object controls style\n * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls\n */\nexport function renderSquareControl(\n ctx,\n left,\n top,\n styleOverride,\n fabricObject\n) {\n styleOverride = styleOverride || {};\n var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize,\n ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize,\n transparentCorners =\n typeof styleOverride.transparentCorners !== 'undefined'\n ? styleOverride.transparentCorners\n : fabricObject.transparentCorners,\n methodName = transparentCorners ? 'stroke' : 'fill',\n stroke =\n !transparentCorners &&\n (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor),\n xSizeBy2 = xSize / 2,\n ySizeBy2 = ySize / 2;\n ctx.save();\n ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor;\n ctx.strokeStyle =\n styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor;\n // this is still wrong\n ctx.lineWidth = 1;\n ctx.translate(left, top);\n // angle is relative to canvas plane\n var angle = fabricObject.getTotalAngle();\n ctx.rotate(degreesToRadians(angle));\n // this does not work, and fixed with ( && ) does not make sense.\n // to have real transparent corners we need the controls on upperCanvas\n // transparentCorners || ctx.clearRect(-xSizeBy2, -ySizeBy2, xSize, ySize);\n ctx[methodName + 'Rect'](-xSizeBy2, -ySizeBy2, xSize, ySize);\n if (stroke) {\n ctx.strokeRect(-xSizeBy2, -ySizeBy2, xSize, ySize);\n }\n ctx.restore();\n}\n","//@ts-nocheck\n\nimport { renderCircleControl, renderSquareControl } from './controls.render';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n\n function Control(options) {\n for (var i in options) {\n this[i] = options[i];\n }\n }\n\n fabric.Control = Control;\n\n fabric.Control.prototype = /** @lends fabric.Control.prototype */ {\n /**\n * keep track of control visibility.\n * mainly for backward compatibility.\n * if you do not want to see a control, you can remove it\n * from the controlset.\n * @type {Boolean}\n * @default true\n */\n visible: true,\n\n /**\n * Name of the action that the control will likely execute.\n * This is optional. FabricJS uses to identify what the user is doing for some\n * extra optimizations. If you are writing a custom control and you want to know\n * somewhere else in the code what is going on, you can use this string here.\n * you can also provide a custom getActionName if your control run multiple actions\n * depending on some external state.\n * default to scale since is the most common, used on 4 corners by default\n * @type {String}\n * @default 'scale'\n */\n actionName: 'scale',\n\n /**\n * Drawing angle of the control.\n * NOT used for now, but name marked as needed for internal logic\n * example: to reuse the same drawing function for different rotated controls\n * @type {Number}\n * @default 0\n */\n angle: 0,\n\n /**\n * Relative position of the control. X\n * 0,0 is the center of the Object, while -0.5 (left) or 0.5 (right) are the extremities\n * of the bounding box.\n * @type {Number}\n * @default 0\n */\n x: 0,\n\n /**\n * Relative position of the control. Y\n * 0,0 is the center of the Object, while -0.5 (top) or 0.5 (bottom) are the extremities\n * of the bounding box.\n * @type {Number}\n * @default 0\n */\n y: 0,\n\n /**\n * Horizontal offset of the control from the defined position. In pixels\n * Positive offset moves the control to the right, negative to the left.\n * It used when you want to have position of control that does not scale with\n * the bounding box. Example: rotation control is placed at x:0, y: 0.5 on\n * the boundindbox, with an offset of 30 pixels vertically. Those 30 pixels will\n * stay 30 pixels no matter how the object is big. Another example is having 2\n * controls in the corner, that stay in the same position when the object scale.\n * of the bounding box.\n * @type {Number}\n * @default 0\n */\n offsetX: 0,\n\n /**\n * Vertical offset of the control from the defined position. In pixels\n * Positive offset moves the control to the bottom, negative to the top.\n * @type {Number}\n * @default 0\n */\n offsetY: 0,\n\n /**\n * Sets the length of the control. If null, defaults to object's cornerSize.\n * Expects both sizeX and sizeY to be set when set.\n * @type {?Number}\n * @default null\n */\n sizeX: null,\n\n /**\n * Sets the height of the control. If null, defaults to object's cornerSize.\n * Expects both sizeX and sizeY to be set when set.\n * @type {?Number}\n * @default null\n */\n sizeY: null,\n\n /**\n * Sets the length of the touch area of the control. If null, defaults to object's touchCornerSize.\n * Expects both touchSizeX and touchSizeY to be set when set.\n * @type {?Number}\n * @default null\n */\n touchSizeX: null,\n\n /**\n * Sets the height of the touch area of the control. If null, defaults to object's touchCornerSize.\n * Expects both touchSizeX and touchSizeY to be set when set.\n * @type {?Number}\n * @default null\n */\n touchSizeY: null,\n\n /**\n * Css cursor style to display when the control is hovered.\n * if the method `cursorStyleHandler` is provided, this property is ignored.\n * @type {String}\n * @default 'crosshair'\n */\n cursorStyle: 'crosshair',\n\n /**\n * If controls has an offsetY or offsetX, draw a line that connects\n * the control to the bounding box\n * @type {Boolean}\n * @default false\n */\n withConnection: false,\n\n /**\n * The control actionHandler, provide one to handle action ( control being moved )\n * @param {Event} eventData the native mouse event\n * @param {Object} transformData properties of the current transform\n * @param {Number} x x position of the cursor\n * @param {Number} y y position of the cursor\n * @return {Boolean} true if the action/event modified the object\n */\n actionHandler: function (/* eventData, transformData, x, y */) {},\n\n /**\n * The control handler for mouse down, provide one to handle mouse down on control\n * @param {Event} eventData the native mouse event\n * @param {Object} transformData properties of the current transform\n * @param {Number} x x position of the cursor\n * @param {Number} y y position of the cursor\n * @return {Boolean} true if the action/event modified the object\n */\n mouseDownHandler: function (/* eventData, transformData, x, y */) {},\n\n /**\n * The control mouseUpHandler, provide one to handle an effect on mouse up.\n * @param {Event} eventData the native mouse event\n * @param {Object} transformData properties of the current transform\n * @param {Number} x x position of the cursor\n * @param {Number} y y position of the cursor\n * @return {Boolean} true if the action/event modified the object\n */\n mouseUpHandler: function (/* eventData, transformData, x, y */) {},\n\n /**\n * Returns control actionHandler\n * @param {Event} eventData the native mouse event\n * @param {fabric.Object} fabricObject on which the control is displayed\n * @param {fabric.Control} control control for which the action handler is being asked\n * @return {Function} the action handler\n */\n getActionHandler: function (/* eventData, fabricObject, control */) {\n return this.actionHandler;\n },\n\n /**\n * Returns control mouseDown handler\n * @param {Event} eventData the native mouse event\n * @param {fabric.Object} fabricObject on which the control is displayed\n * @param {fabric.Control} control control for which the action handler is being asked\n * @return {Function} the action handler\n */\n getMouseDownHandler: function (/* eventData, fabricObject, control */) {\n return this.mouseDownHandler;\n },\n\n /**\n * Returns control mouseUp handler\n * @param {Event} eventData the native mouse event\n * @param {fabric.Object} fabricObject on which the control is displayed\n * @param {fabric.Control} control control for which the action handler is being asked\n * @return {Function} the action handler\n */\n getMouseUpHandler: function (/* eventData, fabricObject, control */) {\n return this.mouseUpHandler;\n },\n\n /**\n * Returns control cursorStyle for css using cursorStyle. If you need a more elaborate\n * function you can pass one in the constructor\n * the cursorStyle property\n * @param {Event} eventData the native mouse event\n * @param {fabric.Control} control the current control ( likely this)\n * @param {fabric.Object} object on which the control is displayed\n * @return {String}\n */\n cursorStyleHandler: function (eventData, control /* fabricObject */) {\n return control.cursorStyle;\n },\n\n /**\n * Returns the action name. The basic implementation just return the actionName property.\n * @param {Event} eventData the native mouse event\n * @param {fabric.Control} control the current control ( likely this)\n * @param {fabric.Object} object on which the control is displayed\n * @return {String}\n */\n getActionName: function (eventData, control /* fabricObject */) {\n return control.actionName;\n },\n\n /**\n * Returns controls visibility\n * @param {fabric.Object} object on which the control is displayed\n * @param {String} controlKey key where the control is memorized on the\n * @return {Boolean}\n */\n getVisibility: function (fabricObject, controlKey) {\n var objectVisibility = fabricObject._controlsVisibility;\n if (\n objectVisibility &&\n typeof objectVisibility[controlKey] !== 'undefined'\n ) {\n return objectVisibility[controlKey];\n }\n return this.visible;\n },\n\n /**\n * Sets controls visibility\n * @param {Boolean} visibility for the object\n * @return {Void}\n */\n setVisibility: function (visibility /* name, fabricObject */) {\n this.visible = visibility;\n },\n\n positionHandler: function (\n dim,\n finalMatrix /*, fabricObject, currentControl */\n ) {\n var point = fabric.util.transformPoint(\n {\n x: this.x * dim.x + this.offsetX,\n y: this.y * dim.y + this.offsetY,\n },\n finalMatrix\n );\n return point;\n },\n\n /**\n * Returns the coords for this control based on object values.\n * @param {Number} objectAngle angle from the fabric object holding the control\n * @param {Number} objectCornerSize cornerSize from the fabric object holding the control (or touchCornerSize if\n * isTouch is true)\n * @param {Number} centerX x coordinate where the control center should be\n * @param {Number} centerY y coordinate where the control center should be\n * @param {boolean} isTouch true if touch corner, false if normal corner\n */\n calcCornerCoords: function (\n objectAngle,\n objectCornerSize,\n centerX,\n centerY,\n isTouch\n ) {\n var cosHalfOffset,\n sinHalfOffset,\n cosHalfOffsetComp,\n sinHalfOffsetComp,\n xSize = isTouch ? this.touchSizeX : this.sizeX,\n ySize = isTouch ? this.touchSizeY : this.sizeY;\n if (xSize && ySize && xSize !== ySize) {\n // handle rectangular corners\n var controlTriangleAngle = Math.atan2(ySize, xSize);\n var cornerHypotenuse = Math.sqrt(xSize * xSize + ySize * ySize) / 2;\n var newTheta =\n controlTriangleAngle - fabric.util.degreesToRadians(objectAngle);\n var newThetaComp =\n Math.PI / 2 -\n controlTriangleAngle -\n fabric.util.degreesToRadians(objectAngle);\n cosHalfOffset = cornerHypotenuse * fabric.util.cos(newTheta);\n sinHalfOffset = cornerHypotenuse * fabric.util.sin(newTheta);\n // use complementary angle for two corners\n cosHalfOffsetComp = cornerHypotenuse * fabric.util.cos(newThetaComp);\n sinHalfOffsetComp = cornerHypotenuse * fabric.util.sin(newThetaComp);\n } else {\n // handle square corners\n // use default object corner size unless size is defined\n var cornerSize = xSize && ySize ? xSize : objectCornerSize;\n /* 0.7071067812 stands for sqrt(2)/2 */\n cornerHypotenuse = cornerSize * 0.7071067812;\n // complementary angles are equal since they're both 45 degrees\n var newTheta = fabric.util.degreesToRadians(45 - objectAngle);\n cosHalfOffset = cosHalfOffsetComp =\n cornerHypotenuse * fabric.util.cos(newTheta);\n sinHalfOffset = sinHalfOffsetComp =\n cornerHypotenuse * fabric.util.sin(newTheta);\n }\n\n return {\n tl: {\n x: centerX - sinHalfOffsetComp,\n y: centerY - cosHalfOffsetComp,\n },\n tr: {\n x: centerX + cosHalfOffset,\n y: centerY - sinHalfOffset,\n },\n bl: {\n x: centerX - cosHalfOffset,\n y: centerY + sinHalfOffset,\n },\n br: {\n x: centerX + sinHalfOffsetComp,\n y: centerY + cosHalfOffsetComp,\n },\n };\n },\n\n /**\n * Render function for the control.\n * When this function runs the context is unscaled. unrotate. Just retina scaled.\n * all the functions will have to translate to the point left,top before starting Drawing\n * if they want to draw a control where the position is detected.\n * left and top are the result of the positionHandler function\n * @param {RenderingContext2D} ctx the context where the control will be drawn\n * @param {Number} left position of the canvas where we are about to render the control.\n * @param {Number} top position of the canvas where we are about to render the control.\n * @param {Object} styleOverride\n * @param {fabric.Object} fabricObject the object where the control is about to be rendered\n */\n render: function (ctx, left, top, styleOverride, fabricObject) {\n styleOverride = styleOverride || {};\n switch (styleOverride.cornerStyle || fabricObject.cornerStyle) {\n case 'circle':\n renderCircleControl.call(\n this,\n ctx,\n left,\n top,\n styleOverride,\n fabricObject\n );\n break;\n default:\n renderSquareControl.call(\n this,\n ctx,\n left,\n top,\n styleOverride,\n fabricObject\n );\n }\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Point } from '../point.class';\nimport { fireEvent } from '../util/fireEvent';\nimport { renderCircleControl, renderSquareControl } from './controls.render';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n scaleMap = ['e', 'se', 's', 'sw', 'w', 'nw', 'n', 'ne', 'e'],\n skewMap = ['ns', 'nesw', 'ew', 'nwse'],\n controls = {},\n LEFT = 'left',\n TOP = 'top',\n RIGHT = 'right',\n BOTTOM = 'bottom',\n CENTER = 'center',\n opposite = {\n top: BOTTOM,\n bottom: TOP,\n left: RIGHT,\n right: LEFT,\n center: CENTER,\n },\n radiansToDegrees = fabric.util.radiansToDegrees,\n sign =\n Math.sign ||\n function (x) {\n return (x > 0) - (x < 0) || +x;\n };\n\n /**\n * Combine control position and object angle to find the control direction compared\n * to the object center.\n * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls\n * @param {fabric.Control} control the control class\n * @return {Number} 0 - 7 a quadrant number\n */\n function findCornerQuadrant(fabricObject, control) {\n // angle is relative to canvas plane\n var angle = fabricObject.getTotalAngle();\n var cornerAngle =\n angle + radiansToDegrees(Math.atan2(control.y, control.x)) + 360;\n return Math.round((cornerAngle % 360) / 45);\n }\n\n /**\n * Inspect event and fabricObject properties to understand if the scaling action\n * @param {Event} eventData from the user action\n * @param {fabric.Object} fabricObject the fabric object about to scale\n * @return {Boolean} true if scale is proportional\n */\n function scaleIsProportional(eventData, fabricObject) {\n var canvas = fabricObject.canvas,\n uniScaleKey = canvas.uniScaleKey,\n uniformIsToggled = eventData[uniScaleKey];\n return (\n (canvas.uniformScaling && !uniformIsToggled) ||\n (!canvas.uniformScaling && uniformIsToggled)\n );\n }\n\n /**\n * Checks if transform is centered\n * @param {Object} transform transform data\n * @return {Boolean} true if transform is centered\n */\n function isTransformCentered(transform) {\n return transform.originX === CENTER && transform.originY === CENTER;\n }\n\n /**\n * Inspect fabricObject to understand if the current scaling action is allowed\n * @param {fabric.Object} fabricObject the fabric object about to scale\n * @param {String} by 'x' or 'y' or ''\n * @param {Boolean} scaleProportionally true if we are trying to scale proportionally\n * @return {Boolean} true if scaling is not allowed at current conditions\n */\n function scalingIsForbidden(fabricObject, by, scaleProportionally) {\n var lockX = fabricObject.lockScalingX,\n lockY = fabricObject.lockScalingY;\n if (lockX && lockY) {\n return true;\n }\n if (!by && (lockX || lockY) && scaleProportionally) {\n return true;\n }\n if (lockX && by === 'x') {\n return true;\n }\n if (lockY && by === 'y') {\n return true;\n }\n return false;\n }\n\n /**\n * return the correct cursor style for the scale action\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} a valid css string for the cursor\n */\n function scaleCursorStyleHandler(eventData, control, fabricObject) {\n var notAllowed = 'not-allowed',\n scaleProportionally = scaleIsProportional(eventData, fabricObject),\n by = '';\n if (control.x !== 0 && control.y === 0) {\n by = 'x';\n } else if (control.x === 0 && control.y !== 0) {\n by = 'y';\n }\n if (scalingIsForbidden(fabricObject, by, scaleProportionally)) {\n return notAllowed;\n }\n var n = findCornerQuadrant(fabricObject, control);\n return scaleMap[n] + '-resize';\n }\n\n /**\n * return the correct cursor style for the skew action\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} a valid css string for the cursor\n */\n function skewCursorStyleHandler(eventData, control, fabricObject) {\n var notAllowed = 'not-allowed';\n if (control.x !== 0 && fabricObject.lockSkewingY) {\n return notAllowed;\n }\n if (control.y !== 0 && fabricObject.lockSkewingX) {\n return notAllowed;\n }\n var n = findCornerQuadrant(fabricObject, control) % 4;\n return skewMap[n] + '-resize';\n }\n\n /**\n * Combine skew and scale style handlers to cover fabric standard use case\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} a valid css string for the cursor\n */\n function scaleSkewCursorStyleHandler(eventData, control, fabricObject) {\n if (eventData[fabricObject.canvas.altActionKey]) {\n return controls.skewCursorStyleHandler(eventData, control, fabricObject);\n }\n return controls.scaleCursorStyleHandler(eventData, control, fabricObject);\n }\n\n /**\n * Inspect event, control and fabricObject to return the correct action name\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} an action name\n */\n function scaleOrSkewActionName(eventData, control, fabricObject) {\n var isAlternative = eventData[fabricObject.canvas.altActionKey];\n if (control.x === 0) {\n // then is scaleY or skewX\n return isAlternative ? 'skewX' : 'scaleY';\n }\n if (control.y === 0) {\n // then is scaleY or skewX\n return isAlternative ? 'skewY' : 'scaleX';\n }\n }\n\n /**\n * Find the correct style for the control that is used for rotation.\n * this function is very simple and it just take care of not-allowed or standard cursor\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} a valid css string for the cursor\n */\n function rotationStyleHandler(eventData, control, fabricObject) {\n if (fabricObject.lockRotation) {\n return 'not-allowed';\n }\n return control.cursorStyle;\n }\n\n function commonEventInfo(eventData, transform, x, y) {\n return {\n e: eventData,\n transform: transform,\n pointer: {\n x: x,\n y: y,\n },\n };\n }\n\n /**\n * Wrap an action handler with saving/restoring object position on the transform.\n * this is the code that permits to objects to keep their position while transforming.\n * @param {Function} actionHandler the function to wrap\n * @return {Function} a function with an action handler signature\n */\n function wrapWithFixedAnchor(actionHandler) {\n return function (eventData, transform, x, y) {\n var target = transform.target,\n centerPoint = target.getRelativeCenterPoint(),\n constraint = target.translateToOriginPoint(\n centerPoint,\n transform.originX,\n transform.originY\n ),\n actionPerformed = actionHandler(eventData, transform, x, y);\n target.setPositionByOrigin(\n constraint,\n transform.originX,\n transform.originY\n );\n return actionPerformed;\n };\n }\n\n /**\n * Wrap an action handler with firing an event if the action is performed\n * @param {Function} actionHandler the function to wrap\n * @return {Function} a function with an action handler signature\n */\n function wrapWithFireEvent(eventName, actionHandler) {\n return function (eventData, transform, x, y) {\n var actionPerformed = actionHandler(eventData, transform, x, y);\n if (actionPerformed) {\n fireEvent(eventName, commonEventInfo(eventData, transform, x, y));\n }\n return actionPerformed;\n };\n }\n\n /**\n * Transforms a point described by x and y in a distance from the top left corner of the object\n * bounding box.\n * @param {Object} transform\n * @param {String} originX\n * @param {String} originY\n * @param {number} x\n * @param {number} y\n * @return {Fabric.Point} the normalized point\n */\n function getLocalPoint(transform, originX, originY, x, y) {\n var target = transform.target,\n control = target.controls[transform.corner],\n zoom = target.canvas.getZoom(),\n padding = target.padding / zoom,\n localPoint = target.normalizePoint(new Point(x, y), originX, originY);\n if (localPoint.x >= padding) {\n localPoint.x -= padding;\n }\n if (localPoint.x <= -padding) {\n localPoint.x += padding;\n }\n if (localPoint.y >= padding) {\n localPoint.y -= padding;\n }\n if (localPoint.y <= padding) {\n localPoint.y += padding;\n }\n localPoint.x -= control.offsetX;\n localPoint.y -= control.offsetY;\n return localPoint;\n }\n\n /**\n * Detect if the fabric object is flipped on one side.\n * @param {fabric.Object} target\n * @return {Boolean} true if one flip, but not two.\n */\n function targetHasOneFlip(target) {\n return target.flipX !== target.flipY;\n }\n\n /**\n * Utility function to compensate the scale factor when skew is applied on both axes\n * @private\n */\n function compensateScaleForSkew(\n target,\n oppositeSkew,\n scaleToCompensate,\n axis,\n reference\n ) {\n if (target[oppositeSkew] !== 0) {\n var newDim = target._getTransformedDimensions()[axis];\n var newValue = (reference / newDim) * target[scaleToCompensate];\n target.set(scaleToCompensate, newValue);\n }\n }\n\n /**\n * Action handler for skewing on the X axis\n * @private\n */\n function skewObjectX(eventData, transform, x, y) {\n var target = transform.target,\n // find how big the object would be, if there was no skewX. takes in account scaling\n dimNoSkew = target._getTransformedDimensions({\n skewX: 0,\n skewY: target.skewY,\n }),\n localPoint = getLocalPoint(\n transform,\n transform.originX,\n transform.originY,\n x,\n y\n ),\n // the mouse is in the center of the object, and we want it to stay there.\n // so the object will grow twice as much as the mouse.\n // this makes the skew growth to localPoint * 2 - dimNoSkew.\n totalSkewSize = Math.abs(localPoint.x * 2) - dimNoSkew.x,\n currentSkew = target.skewX,\n newSkew;\n if (totalSkewSize < 2) {\n // let's make it easy to go back to position 0.\n newSkew = 0;\n } else {\n newSkew = radiansToDegrees(\n Math.atan2(totalSkewSize / target.scaleX, dimNoSkew.y / target.scaleY)\n );\n // now we have to find the sign of the skew.\n // it mostly depend on the origin of transformation.\n if (transform.originX === LEFT && transform.originY === BOTTOM) {\n newSkew = -newSkew;\n }\n if (transform.originX === RIGHT && transform.originY === TOP) {\n newSkew = -newSkew;\n }\n if (targetHasOneFlip(target)) {\n newSkew = -newSkew;\n }\n }\n var hasSkewed = currentSkew !== newSkew;\n if (hasSkewed) {\n var dimBeforeSkewing = target._getTransformedDimensions().y;\n target.set('skewX', newSkew);\n compensateScaleForSkew(target, 'skewY', 'scaleY', 'y', dimBeforeSkewing);\n }\n return hasSkewed;\n }\n\n /**\n * Action handler for skewing on the Y axis\n * @private\n */\n function skewObjectY(eventData, transform, x, y) {\n var target = transform.target,\n // find how big the object would be, if there was no skewX. takes in account scaling\n dimNoSkew = target._getTransformedDimensions({\n skewX: target.skewX,\n skewY: 0,\n }),\n localPoint = getLocalPoint(\n transform,\n transform.originX,\n transform.originY,\n x,\n y\n ),\n // the mouse is in the center of the object, and we want it to stay there.\n // so the object will grow twice as much as the mouse.\n // this makes the skew growth to localPoint * 2 - dimNoSkew.\n totalSkewSize = Math.abs(localPoint.y * 2) - dimNoSkew.y,\n currentSkew = target.skewY,\n newSkew;\n if (totalSkewSize < 2) {\n // let's make it easy to go back to position 0.\n newSkew = 0;\n } else {\n newSkew = radiansToDegrees(\n Math.atan2(totalSkewSize / target.scaleY, dimNoSkew.x / target.scaleX)\n );\n // now we have to find the sign of the skew.\n // it mostly depend on the origin of transformation.\n if (transform.originX === LEFT && transform.originY === BOTTOM) {\n newSkew = -newSkew;\n }\n if (transform.originX === RIGHT && transform.originY === TOP) {\n newSkew = -newSkew;\n }\n if (targetHasOneFlip(target)) {\n newSkew = -newSkew;\n }\n }\n var hasSkewed = currentSkew !== newSkew;\n if (hasSkewed) {\n var dimBeforeSkewing = target._getTransformedDimensions().x;\n target.set('skewY', newSkew);\n compensateScaleForSkew(target, 'skewX', 'scaleX', 'x', dimBeforeSkewing);\n }\n return hasSkewed;\n }\n\n /**\n * Wrapped Action handler for skewing on the Y axis, takes care of the\n * skew direction and determine the correct transform origin for the anchor point\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function skewHandlerX(eventData, transform, x, y) {\n // step1 figure out and change transform origin.\n // if skewX > 0 and originY bottom we anchor on right\n // if skewX > 0 and originY top we anchor on left\n // if skewX < 0 and originY bottom we anchor on left\n // if skewX < 0 and originY top we anchor on right\n // if skewX is 0, we look for mouse position to understand where are we going.\n var target = transform.target,\n currentSkew = target.skewX,\n originX,\n originY = transform.originY;\n if (target.lockSkewingX) {\n return false;\n }\n if (currentSkew === 0) {\n var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y);\n if (localPointFromCenter.x > 0) {\n // we are pulling right, anchor left;\n originX = LEFT;\n } else {\n // we are pulling right, anchor right\n originX = RIGHT;\n }\n } else {\n if (currentSkew > 0) {\n originX = originY === TOP ? LEFT : RIGHT;\n }\n if (currentSkew < 0) {\n originX = originY === TOP ? RIGHT : LEFT;\n }\n // is the object flipped on one side only? swap the origin.\n if (targetHasOneFlip(target)) {\n originX = originX === LEFT ? RIGHT : LEFT;\n }\n }\n\n // once we have the origin, we find the anchor point\n transform.originX = originX;\n var finalHandler = wrapWithFireEvent(\n 'skewing',\n wrapWithFixedAnchor(skewObjectX)\n );\n return finalHandler(eventData, transform, x, y);\n }\n\n /**\n * Wrapped Action handler for skewing on the Y axis, takes care of the\n * skew direction and determine the correct transform origin for the anchor point\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function skewHandlerY(eventData, transform, x, y) {\n // step1 figure out and change transform origin.\n // if skewY > 0 and originX left we anchor on top\n // if skewY > 0 and originX right we anchor on bottom\n // if skewY < 0 and originX left we anchor on bottom\n // if skewY < 0 and originX right we anchor on top\n // if skewY is 0, we look for mouse position to understand where are we going.\n var target = transform.target,\n currentSkew = target.skewY,\n originY,\n originX = transform.originX;\n if (target.lockSkewingY) {\n return false;\n }\n if (currentSkew === 0) {\n var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y);\n if (localPointFromCenter.y > 0) {\n // we are pulling down, anchor up;\n originY = TOP;\n } else {\n // we are pulling up, anchor down\n originY = BOTTOM;\n }\n } else {\n if (currentSkew > 0) {\n originY = originX === LEFT ? TOP : BOTTOM;\n }\n if (currentSkew < 0) {\n originY = originX === LEFT ? BOTTOM : TOP;\n }\n // is the object flipped on one side only? swap the origin.\n if (targetHasOneFlip(target)) {\n originY = originY === TOP ? BOTTOM : TOP;\n }\n }\n\n // once we have the origin, we find the anchor point\n transform.originY = originY;\n var finalHandler = wrapWithFireEvent(\n 'skewing',\n wrapWithFixedAnchor(skewObjectY)\n );\n return finalHandler(eventData, transform, x, y);\n }\n\n /**\n * Action handler for rotation and snapping, without anchor point.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n * @private\n */\n function rotationWithSnapping(eventData, transform, x, y) {\n var t = transform,\n target = t.target,\n pivotPoint = target.translateToOriginPoint(\n target.getRelativeCenterPoint(),\n t.originX,\n t.originY\n );\n\n if (target.lockRotation) {\n return false;\n }\n\n var lastAngle = Math.atan2(t.ey - pivotPoint.y, t.ex - pivotPoint.x),\n curAngle = Math.atan2(y - pivotPoint.y, x - pivotPoint.x),\n angle = radiansToDegrees(curAngle - lastAngle + t.theta),\n hasRotated = true;\n\n if (target.snapAngle > 0) {\n var snapAngle = target.snapAngle,\n snapThreshold = target.snapThreshold || snapAngle,\n rightAngleLocked = Math.ceil(angle / snapAngle) * snapAngle,\n leftAngleLocked = Math.floor(angle / snapAngle) * snapAngle;\n\n if (Math.abs(angle - leftAngleLocked) < snapThreshold) {\n angle = leftAngleLocked;\n } else if (Math.abs(angle - rightAngleLocked) < snapThreshold) {\n angle = rightAngleLocked;\n }\n }\n\n // normalize angle to positive value\n if (angle < 0) {\n angle = 360 + angle;\n }\n angle %= 360;\n\n hasRotated = target.angle !== angle;\n target.angle = angle;\n return hasRotated;\n }\n\n /**\n * Basic scaling logic, reused with different constrain for scaling X,Y, freely or equally.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @param {Object} options additional information for scaling\n * @param {String} options.by 'x', 'y', 'equally' or '' to indicate type of scaling\n * @return {Boolean} true if some change happened\n * @private\n */\n function scaleObject(eventData, transform, x, y, options) {\n options = options || {};\n var target = transform.target,\n lockScalingX = target.lockScalingX,\n lockScalingY = target.lockScalingY,\n by = options.by,\n newPoint,\n scaleX,\n scaleY,\n dim,\n scaleProportionally = scaleIsProportional(eventData, target),\n forbidScaling = scalingIsForbidden(target, by, scaleProportionally),\n signX,\n signY,\n gestureScale = transform.gestureScale;\n\n if (forbidScaling) {\n return false;\n }\n if (gestureScale) {\n scaleX = transform.scaleX * gestureScale;\n scaleY = transform.scaleY * gestureScale;\n } else {\n newPoint = getLocalPoint(\n transform,\n transform.originX,\n transform.originY,\n x,\n y\n );\n // use of sign: We use sign to detect change of direction of an action. sign usually change when\n // we cross the origin point with the mouse. So a scale flip for example. There is an issue when scaling\n // by center and scaling using one middle control ( default: mr, mt, ml, mb), the mouse movement can easily\n // cross many time the origin point and flip the object. so we need a way to filter out the noise.\n // This ternary here should be ok to filter out X scaling when we want Y only and vice versa.\n signX = by !== 'y' ? sign(newPoint.x) : 1;\n signY = by !== 'x' ? sign(newPoint.y) : 1;\n if (!transform.signX) {\n transform.signX = signX;\n }\n if (!transform.signY) {\n transform.signY = signY;\n }\n\n if (\n target.lockScalingFlip &&\n (transform.signX !== signX || transform.signY !== signY)\n ) {\n return false;\n }\n\n dim = target._getTransformedDimensions();\n // missing detection of flip and logic to switch the origin\n if (scaleProportionally && !by) {\n // uniform scaling\n var distance = Math.abs(newPoint.x) + Math.abs(newPoint.y),\n original = transform.original,\n originalDistance =\n Math.abs((dim.x * original.scaleX) / target.scaleX) +\n Math.abs((dim.y * original.scaleY) / target.scaleY),\n scale = distance / originalDistance;\n scaleX = original.scaleX * scale;\n scaleY = original.scaleY * scale;\n } else {\n scaleX = Math.abs((newPoint.x * target.scaleX) / dim.x);\n scaleY = Math.abs((newPoint.y * target.scaleY) / dim.y);\n }\n // if we are scaling by center, we need to double the scale\n if (isTransformCentered(transform)) {\n scaleX *= 2;\n scaleY *= 2;\n }\n if (transform.signX !== signX && by !== 'y') {\n transform.originX = opposite[transform.originX];\n scaleX *= -1;\n transform.signX = signX;\n }\n if (transform.signY !== signY && by !== 'x') {\n transform.originY = opposite[transform.originY];\n scaleY *= -1;\n transform.signY = signY;\n }\n }\n // minScale is taken are in the setter.\n var oldScaleX = target.scaleX,\n oldScaleY = target.scaleY;\n if (!by) {\n !lockScalingX && target.set('scaleX', scaleX);\n !lockScalingY && target.set('scaleY', scaleY);\n } else {\n // forbidden cases already handled on top here.\n by === 'x' && target.set('scaleX', scaleX);\n by === 'y' && target.set('scaleY', scaleY);\n }\n return oldScaleX !== target.scaleX || oldScaleY !== target.scaleY;\n }\n\n /**\n * Generic scaling logic, to scale from corners either equally or freely.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scaleObjectFromCorner(eventData, transform, x, y) {\n return scaleObject(eventData, transform, x, y);\n }\n\n /**\n * Scaling logic for the X axis.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scaleObjectX(eventData, transform, x, y) {\n return scaleObject(eventData, transform, x, y, { by: 'x' });\n }\n\n /**\n * Scaling logic for the Y axis.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scaleObjectY(eventData, transform, x, y) {\n return scaleObject(eventData, transform, x, y, { by: 'y' });\n }\n\n /**\n * Composed action handler to either scale Y or skew X\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scalingYOrSkewingX(eventData, transform, x, y) {\n // ok some safety needed here.\n if (eventData[transform.target.canvas.altActionKey]) {\n return controls.skewHandlerX(eventData, transform, x, y);\n }\n return controls.scalingY(eventData, transform, x, y);\n }\n\n /**\n * Composed action handler to either scale X or skew Y\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scalingXOrSkewingY(eventData, transform, x, y) {\n // ok some safety needed here.\n if (eventData[transform.target.canvas.altActionKey]) {\n return controls.skewHandlerY(eventData, transform, x, y);\n }\n return controls.scalingX(eventData, transform, x, y);\n }\n\n /**\n * Action handler to change textbox width\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function changeWidth(eventData, transform, x, y) {\n var localPoint = getLocalPoint(\n transform,\n transform.originX,\n transform.originY,\n x,\n y\n );\n // make sure the control changes width ONLY from it's side of target\n if (\n transform.originX === 'center' ||\n (transform.originX === 'right' && localPoint.x < 0) ||\n (transform.originX === 'left' && localPoint.x > 0)\n ) {\n var target = transform.target,\n strokePadding =\n target.strokeWidth / (target.strokeUniform ? target.scaleX : 1),\n multiplier = isTransformCentered(transform) ? 2 : 1,\n oldWidth = target.width,\n newWidth = Math.ceil(\n Math.abs((localPoint.x * multiplier) / target.scaleX) - strokePadding\n );\n target.set('width', Math.max(newWidth, 0));\n // check against actual target width in case `newWidth` was rejected\n return oldWidth !== target.width;\n }\n return false;\n }\n\n /**\n * Action handler\n * @private\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if the translation occurred\n */\n function dragHandler(eventData, transform, x, y) {\n var target = transform.target,\n newLeft = x - transform.offsetX,\n newTop = y - transform.offsetY,\n moveX = !target.get('lockMovementX') && target.left !== newLeft,\n moveY = !target.get('lockMovementY') && target.top !== newTop;\n moveX && target.set('left', newLeft);\n moveY && target.set('top', newTop);\n if (moveX || moveY) {\n fireEvent('moving', commonEventInfo(eventData, transform, x, y));\n }\n return moveX || moveY;\n }\n\n controls.scaleCursorStyleHandler = scaleCursorStyleHandler;\n controls.skewCursorStyleHandler = skewCursorStyleHandler;\n controls.scaleSkewCursorStyleHandler = scaleSkewCursorStyleHandler;\n controls.rotationWithSnapping = wrapWithFireEvent(\n 'rotating',\n wrapWithFixedAnchor(rotationWithSnapping)\n );\n controls.scalingEqually = wrapWithFireEvent(\n 'scaling',\n wrapWithFixedAnchor(scaleObjectFromCorner)\n );\n controls.scalingX = wrapWithFireEvent(\n 'scaling',\n wrapWithFixedAnchor(scaleObjectX)\n );\n controls.scalingY = wrapWithFireEvent(\n 'scaling',\n wrapWithFixedAnchor(scaleObjectY)\n );\n controls.scalingYOrSkewingX = scalingYOrSkewingX;\n controls.scalingXOrSkewingY = scalingXOrSkewingY;\n controls.changeWidth = wrapWithFireEvent(\n 'resizing',\n wrapWithFixedAnchor(changeWidth)\n );\n controls.skewHandlerX = skewHandlerX;\n controls.skewHandlerY = skewHandlerY;\n controls.dragHandler = dragHandler;\n controls.scaleOrSkewActionName = scaleOrSkewActionName;\n controls.rotationStyleHandler = rotationStyleHandler;\n controls.fireEvent = fireEvent;\n controls.wrapWithFixedAnchor = wrapWithFixedAnchor;\n controls.wrapWithFireEvent = wrapWithFireEvent;\n controls.getLocalPoint = getLocalPoint;\n controls.renderCircleControl = renderCircleControl;\n controls.renderSquareControl = renderSquareControl;\n fabric.controlsUtils = controls;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n controlsUtils = fabric.controlsUtils,\n scaleSkewStyleHandler = controlsUtils.scaleSkewCursorStyleHandler,\n scaleStyleHandler = controlsUtils.scaleCursorStyleHandler,\n scalingEqually = controlsUtils.scalingEqually,\n scalingYOrSkewingX = controlsUtils.scalingYOrSkewingX,\n scalingXOrSkewingY = controlsUtils.scalingXOrSkewingY,\n scaleOrSkewActionName = controlsUtils.scaleOrSkewActionName,\n objectControls = fabric.Object.prototype.controls;\n\n objectControls.ml = new fabric.Control({\n x: -0.5,\n y: 0,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionHandler: scalingXOrSkewingY,\n getActionName: scaleOrSkewActionName,\n });\n\n objectControls.mr = new fabric.Control({\n x: 0.5,\n y: 0,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionHandler: scalingXOrSkewingY,\n getActionName: scaleOrSkewActionName,\n });\n\n objectControls.mb = new fabric.Control({\n x: 0,\n y: 0.5,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionHandler: scalingYOrSkewingX,\n getActionName: scaleOrSkewActionName,\n });\n\n objectControls.mt = new fabric.Control({\n x: 0,\n y: -0.5,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionHandler: scalingYOrSkewingX,\n getActionName: scaleOrSkewActionName,\n });\n\n objectControls.tl = new fabric.Control({\n x: -0.5,\n y: -0.5,\n cursorStyleHandler: scaleStyleHandler,\n actionHandler: scalingEqually,\n });\n\n objectControls.tr = new fabric.Control({\n x: 0.5,\n y: -0.5,\n cursorStyleHandler: scaleStyleHandler,\n actionHandler: scalingEqually,\n });\n\n objectControls.bl = new fabric.Control({\n x: -0.5,\n y: 0.5,\n cursorStyleHandler: scaleStyleHandler,\n actionHandler: scalingEqually,\n });\n\n objectControls.br = new fabric.Control({\n x: 0.5,\n y: 0.5,\n cursorStyleHandler: scaleStyleHandler,\n actionHandler: scalingEqually,\n });\n\n objectControls.mtr = new fabric.Control({\n x: 0,\n y: -0.5,\n actionHandler: controlsUtils.rotationWithSnapping,\n cursorStyleHandler: controlsUtils.rotationStyleHandler,\n offsetY: -40,\n withConnection: true,\n actionName: 'rotate',\n });\n\n if (fabric.Textbox) {\n // this is breaking the prototype inheritance, no time / ideas to fix it.\n // is important to document that if you want to have all objects to have a\n // specific custom control, you have to add it to Object prototype and to Textbox\n // prototype. The controls are shared as references. So changes to control `tr`\n // can still apply to all objects if needed.\n var textBoxControls = (fabric.Textbox.prototype.controls = {});\n\n textBoxControls.mtr = objectControls.mtr;\n textBoxControls.tr = objectControls.tr;\n textBoxControls.br = objectControls.br;\n textBoxControls.tl = objectControls.tl;\n textBoxControls.bl = objectControls.bl;\n textBoxControls.mt = objectControls.mt;\n textBoxControls.mb = objectControls.mb;\n\n textBoxControls.mr = new fabric.Control({\n x: 0.5,\n y: 0,\n actionHandler: controlsUtils.changeWidth,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionName: 'resizing',\n });\n\n textBoxControls.ml = new fabric.Control({\n x: -0.5,\n y: 0,\n actionHandler: controlsUtils.changeWidth,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionName: 'resizing',\n });\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","import { fabric } from '../../HEADER';\nimport { Color } from '../color';\nimport { Point } from '../point.class';\nimport { Canvas, Shadow } from '../__types__';\n\n/**\n * @see {@link http://fabricjs.com/freedrawing|Freedrawing demo}\n */\nexport abstract class BaseBrush {\n /**\n * Color of a brush\n * @type String\n * @default\n */\n color = 'rgb(0, 0, 0)';\n\n /**\n * Width of a brush, has to be a Number, no string literals\n * @type Number\n * @default\n */\n width = 1;\n\n /**\n * Shadow object representing shadow of this shape.\n * Backwards incompatibility note: This property replaces \"shadowColor\" (String), \"shadowOffsetX\" (Number),\n * \"shadowOffsetY\" (Number) and \"shadowBlur\" (Number) since v1.2.12\n * @type Shadow\n * @default\n */\n shadow: Shadow | null = null;\n\n /**\n * Line endings style of a brush (one of \"butt\", \"round\", \"square\")\n * @type String\n * @default\n */\n strokeLineCap: CanvasLineCap = 'round';\n\n /**\n * Corner style of a brush (one of \"bevel\", \"round\", \"miter\")\n * @type String\n * @default\n */\n strokeLineJoin: CanvasLineJoin = 'round';\n\n /**\n * Maximum miter length (used for strokeLineJoin = \"miter\") of a brush's\n * @type Number\n * @default\n */\n strokeMiterLimit = 10;\n\n /**\n * Stroke Dash Array.\n * @type Array\n * @default\n */\n strokeDashArray: number[] | null = null;\n\n /**\n * When `true`, the free drawing is limited to the whiteboard size. Default to false.\n * @type Boolean\n * @default false\n */\n\n limitedToCanvasSize = false;\n\n /**\n * @todo add type\n */\n canvas: Canvas;\n\n constructor(canvas: Canvas) {\n this.canvas = canvas;\n }\n\n /**\n * Sets brush styles\n * @private\n * @param {CanvasRenderingContext2D} ctx\n */\n _setBrushStyles(ctx: CanvasRenderingContext2D) {\n ctx.strokeStyle = this.color;\n ctx.lineWidth = this.width;\n ctx.lineCap = this.strokeLineCap;\n ctx.miterLimit = this.strokeMiterLimit;\n ctx.lineJoin = this.strokeLineJoin;\n ctx.setLineDash(this.strokeDashArray || []);\n }\n\n /**\n * Sets the transformation on given context\n * @param {CanvasRenderingContext2D} ctx context to render on\n * @private\n */\n protected _saveAndTransform(ctx: CanvasRenderingContext2D) {\n const v = this.canvas.viewportTransform;\n ctx.save();\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n }\n\n /**\n * Sets brush shadow styles\n * @private\n */\n protected _setShadow() {\n if (!this.shadow || !this.canvas) {\n return;\n }\n\n const canvas = this.canvas,\n shadow = this.shadow,\n ctx = canvas.contextTop,\n zoom = canvas.getZoom() * canvas.getRetinaScaling();\n\n ctx.shadowColor = shadow.color;\n ctx.shadowBlur = shadow.blur * zoom;\n ctx.shadowOffsetX = shadow.offsetX * zoom;\n ctx.shadowOffsetY = shadow.offsetY * zoom;\n }\n\n protected needsFullRender() {\n const color = new Color(this.color);\n return color.getAlpha() < 1 || !!this.shadow;\n }\n\n /**\n * Removes brush shadow styles\n * @private\n */\n protected _resetShadow() {\n const ctx = this.canvas.contextTop;\n\n ctx.shadowColor = '';\n ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0;\n }\n\n /**\n * Check is pointer is outside canvas boundaries\n * @param {Object} pointer\n * @private\n */\n protected _isOutSideCanvas(pointer: Point) {\n return (\n pointer.x < 0 ||\n pointer.x > this.canvas.getWidth() ||\n pointer.y < 0 ||\n pointer.y > this.canvas.getHeight()\n );\n }\n}\n\nfabric.BaseBrush = BaseBrush;\n","import { fabric } from '../../HEADER';\nimport { Color } from '../color';\nimport { Point } from '../point.class';\nimport { getRandomInt } from '../util/internals';\nimport { Canvas } from '../__types__';\nimport { BaseBrush } from './base_brush.class';\n\n/**\n * @todo remove transient\n */\nconst { Circle, Group, Shadow } = fabric;\n\nexport type CircleBrushPoint = {\n x: number;\n y: number;\n radius: number;\n fill: string;\n};\n\nexport class CircleBrush extends BaseBrush {\n /**\n * Width of a brush\n * @type Number\n * @default\n */\n width = 10;\n\n points: CircleBrushPoint[];\n\n constructor(canvas: Canvas) {\n super(canvas);\n this.points = [];\n }\n\n /**\n * Invoked inside on mouse down and mouse move\n * @param {Point} pointer\n */\n drawDot(pointer: Point) {\n const point = this.addPoint(pointer),\n ctx = this.canvas.contextTop;\n this._saveAndTransform(ctx);\n this.dot(ctx, point);\n ctx.restore();\n }\n\n dot(ctx: CanvasRenderingContext2D, point: CircleBrushPoint) {\n ctx.fillStyle = point.fill;\n ctx.beginPath();\n ctx.arc(point.x, point.y, point.radius, 0, Math.PI * 2, false);\n ctx.closePath();\n ctx.fill();\n }\n\n /**\n * Invoked on mouse down\n */\n onMouseDown(pointer: Point) {\n this.points = [];\n this.canvas.clearContext(this.canvas.contextTop);\n this._setShadow();\n this.drawDot(pointer);\n }\n\n /**\n * Render the full state of the brush\n * @private\n */\n _render() {\n const ctx = this.canvas.contextTop,\n points = this.points;\n this._saveAndTransform(ctx);\n for (let i = 0; i < points.length; i++) {\n this.dot(ctx, points[i]);\n }\n ctx.restore();\n }\n\n /**\n * Invoked on mouse move\n * @param {Point} pointer\n */\n onMouseMove(pointer: Point) {\n if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) {\n return;\n }\n if (this.needsFullRender()) {\n this.canvas.clearContext(this.canvas.contextTop);\n this.addPoint(pointer);\n this._render();\n } else {\n this.drawDot(pointer);\n }\n }\n\n /**\n * Invoked on mouse up\n */\n onMouseUp() {\n const originalRenderOnAddRemove = this.canvas.renderOnAddRemove;\n this.canvas.renderOnAddRemove = false;\n\n const circles = [];\n\n for (let i = 0; i < this.points.length; i++) {\n const point = this.points[i],\n circle = new Circle({\n radius: point.radius,\n left: point.x,\n top: point.y,\n originX: 'center',\n originY: 'center',\n fill: point.fill,\n });\n\n this.shadow && (circle.shadow = new Shadow(this.shadow));\n\n circles.push(circle);\n }\n const group = new Group(circles, { canvas: this.canvas });\n\n this.canvas.fire('before:path:created', { path: group });\n this.canvas.add(group);\n this.canvas.fire('path:created', { path: group });\n\n this.canvas.clearContext(this.canvas.contextTop);\n this._resetShadow();\n this.canvas.renderOnAddRemove = originalRenderOnAddRemove;\n this.canvas.requestRenderAll();\n }\n\n /**\n * @param {Object} pointer\n * @return {Point} Just added pointer point\n */\n addPoint({ x, y }: Point) {\n const pointerPoint: CircleBrushPoint = {\n x,\n y,\n radius: getRandomInt(Math.max(0, this.width - 20), this.width + 20) / 2,\n fill: new Color(this.color).setAlpha(getRandomInt(0, 100) / 100).toRgba(),\n };\n\n this.points.push(pointerPoint);\n\n return pointerPoint;\n }\n}\n\nfabric.CircleBrush = CircleBrush;\n","import { fabric } from '../../HEADER';\nimport { Point } from '../point.class';\nimport { TEvent, ModifierKey, PathData } from '../typedefs';\nimport { getSmoothPathFromPoints, joinPath } from '../util/path';\nimport { Canvas } from '../__types__';\nimport { BaseBrush } from './base_brush.class';\n\n/**\n * @todo remove transient\n */\nconst { Path, Shadow } = fabric;\n\n/**\n * @private\n * @param {PathData} pathData SVG path commands\n * @returns {boolean}\n */\nfunction isEmptySVGPath(pathData: PathData): boolean {\n return joinPath(pathData) === 'M 0 0 Q 0 0 0 0 L 0 0';\n}\n\nexport class PencilBrush extends BaseBrush {\n /**\n * Discard points that are less than `decimate` pixel distant from each other\n * @type Number\n * @default 0.4\n */\n decimate = 0.4;\n\n /**\n * Draws a straight line between last recorded point to current pointer\n * Used for `shift` functionality\n *\n * @type boolean\n * @default false\n */\n drawStraightLine = false;\n\n /**\n * The event modifier key that makes the brush draw a straight line.\n * If `null` or 'none' or any other string that is not a modifier key the feature is disabled.\n * @type {ModifierKey | undefined | null}\n */\n straightLineKey: ModifierKey | undefined | null = 'shiftKey';\n\n private _points: Point[];\n private _hasStraightLine: boolean;\n private oldEnd?: Point;\n\n constructor(canvas: Canvas) {\n super(canvas);\n this._points = [];\n this._hasStraightLine = false;\n }\n\n needsFullRender() {\n return super.needsFullRender() || this._hasStraightLine;\n }\n\n static drawSegment(ctx: CanvasRenderingContext2D, p1: Point, p2: Point) {\n const midPoint = p1.midPointFrom(p2);\n ctx.quadraticCurveTo(p1.x, p1.y, midPoint.x, midPoint.y);\n return midPoint;\n }\n\n /**\n * Invoked on mouse down\n * @param {Point} pointer\n */\n onMouseDown(pointer: Point, { e }: TEvent) {\n if (!this.canvas._isMainEvent(e)) {\n return;\n }\n this.drawStraightLine = !!this.straightLineKey && e[this.straightLineKey];\n this._prepareForDrawing(pointer);\n // capture coordinates immediately\n // this allows to draw dots (when movement never occurs)\n this._addPoint(pointer);\n this._render();\n }\n\n /**\n * Invoked on mouse move\n * @param {Point} pointer\n */\n onMouseMove(pointer: Point, { e }: TEvent) {\n if (!this.canvas._isMainEvent(e)) {\n return;\n }\n this.drawStraightLine = !!this.straightLineKey && e[this.straightLineKey];\n if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) {\n return;\n }\n if (this._addPoint(pointer) && this._points.length > 1) {\n if (this.needsFullRender()) {\n // redraw curve\n // clear top canvas\n this.canvas.clearContext(this.canvas.contextTop);\n this._render();\n } else {\n const points = this._points,\n length = points.length,\n ctx = this.canvas.contextTop;\n // draw the curve update\n this._saveAndTransform(ctx);\n if (this.oldEnd) {\n ctx.beginPath();\n ctx.moveTo(this.oldEnd.x, this.oldEnd.y);\n }\n this.oldEnd = PencilBrush.drawSegment(\n ctx,\n points[length - 2],\n points[length - 1]\n );\n ctx.stroke();\n ctx.restore();\n }\n }\n }\n\n /**\n * Invoked on mouse up\n */\n onMouseUp({ e }: TEvent) {\n if (!this.canvas._isMainEvent(e)) {\n return true;\n }\n this.drawStraightLine = false;\n this.oldEnd = undefined;\n this._finalizeAndAddPath();\n return false;\n }\n\n /**\n * @private\n * @param {Point} pointer Actual mouse position related to the canvas.\n */\n _prepareForDrawing(pointer: Point) {\n this._reset();\n this._addPoint(pointer);\n this.canvas.contextTop.moveTo(pointer.x, pointer.y);\n }\n\n /**\n * @private\n * @param {Point} point Point to be added to points array\n */\n _addPoint(point: Point) {\n if (\n this._points.length > 1 &&\n point.eq(this._points[this._points.length - 1])\n ) {\n return false;\n }\n if (this.drawStraightLine && this._points.length > 1) {\n this._hasStraightLine = true;\n this._points.pop();\n }\n this._points.push(point);\n return true;\n }\n\n /**\n * Clear points array and set contextTop canvas style.\n * @private\n */\n _reset() {\n this._points = [];\n this._setBrushStyles(this.canvas.contextTop);\n this._setShadow();\n this._hasStraightLine = false;\n }\n\n /**\n * Draw a smooth path on the topCanvas using quadraticCurveTo\n * @private\n * @param {CanvasRenderingContext2D} [ctx]\n */\n _render(ctx: CanvasRenderingContext2D = this.canvas.contextTop) {\n let p1 = this._points[0],\n p2 = this._points[1];\n this._saveAndTransform(ctx);\n ctx.beginPath();\n //if we only have 2 points in the path and they are the same\n //it means that the user only clicked the canvas without moving the mouse\n //then we should be drawing a dot. A path isn't drawn between two identical dots\n //that's why we set them apart a bit\n if (this._points.length === 2 && p1.x === p2.x && p1.y === p2.y) {\n const width = this.width / 1000;\n p1.x -= width;\n p2.x += width;\n }\n ctx.moveTo(p1.x, p1.y);\n\n for (let i = 1; i < this._points.length; i++) {\n // we pick the point between pi + 1 & pi + 2 as the\n // end point and p1 as our control point.\n PencilBrush.drawSegment(ctx, p1, p2);\n p1 = this._points[i];\n p2 = this._points[i + 1];\n }\n // Draw last line as a straight line while\n // we wait for the next point to be able to calculate\n // the bezier control point\n ctx.lineTo(p1.x, p1.y);\n ctx.stroke();\n ctx.restore();\n }\n\n /**\n * Converts points to SVG path\n * @param {Array} points Array of points\n * @return {PathData} SVG path commands\n */\n convertPointsToSVGPath(points: Point[]): PathData {\n const correction = this.width / 1000;\n return getSmoothPathFromPoints(points, correction);\n }\n\n /**\n * Creates a Path object to add on canvas\n * @param {PathData} pathData Path data\n * @return {Path} Path to add on canvas\n */\n createPath(pathData: PathData) {\n const path = new Path(pathData, {\n fill: null,\n stroke: this.color,\n strokeWidth: this.width,\n strokeLineCap: this.strokeLineCap,\n strokeMiterLimit: this.strokeMiterLimit,\n strokeLineJoin: this.strokeLineJoin,\n strokeDashArray: this.strokeDashArray,\n });\n if (this.shadow) {\n this.shadow.affectStroke = true;\n path.shadow = new Shadow(this.shadow);\n }\n\n return path;\n }\n\n /**\n * Decimate points array with the decimate value\n */\n decimatePoints(points: Point[], distance: number) {\n if (points.length <= 2) {\n return points;\n }\n let lastPoint = points[0],\n cDistance;\n const zoom = this.canvas.getZoom(),\n adjustedDistance = Math.pow(distance / zoom, 2),\n l = points.length - 1,\n newPoints = [lastPoint];\n for (let i = 1; i < l - 1; i++) {\n cDistance =\n Math.pow(lastPoint.x - points[i].x, 2) +\n Math.pow(lastPoint.y - points[i].y, 2);\n if (cDistance >= adjustedDistance) {\n lastPoint = points[i];\n newPoints.push(lastPoint);\n }\n }\n // Add the last point from the original line to the end of the array.\n // This ensures decimate doesn't delete the last point on the line, and ensures the line is > 1 point.\n newPoints.push(points[l]);\n return newPoints;\n }\n\n /**\n * On mouseup after drawing the path on contextTop canvas\n * we use the points captured to create an new Path object\n * and add it to the canvas.\n */\n _finalizeAndAddPath() {\n const ctx = this.canvas.contextTop;\n ctx.closePath();\n if (this.decimate) {\n this._points = this.decimatePoints(this._points, this.decimate);\n }\n const pathData = this.convertPointsToSVGPath(this._points);\n if (isEmptySVGPath(pathData)) {\n // do not create 0 width/height paths, as they are\n // rendered inconsistently across browsers\n // Firefox 4, for example, renders a dot,\n // whereas Chrome 10 renders nothing\n this.canvas.requestRenderAll();\n return;\n }\n\n const path = this.createPath(pathData);\n this.canvas.clearContext(this.canvas.contextTop);\n this.canvas.fire('before:path:created', { path: path });\n this.canvas.add(path);\n this.canvas.requestRenderAll();\n path.setCoords();\n this._resetShadow();\n\n // fire event 'path' created\n this.canvas.fire('path:created', { path: path });\n }\n}\n\nfabric.PencilBrush = PencilBrush;\n","import { fabric } from '../../HEADER';\nimport { PathData } from '../typedefs';\nimport { createCanvasElement } from '../util/misc/dom';\nimport { Canvas } from '../__types__';\nimport { PencilBrush } from './pencil_brush.class';\n\n/**\n * @todo remove transient\n */\nconst { Pattern } = fabric;\n\nexport class PatternBrush extends PencilBrush {\n source?: CanvasImageSource;\n\n constructor(canvas: Canvas) {\n super(canvas);\n }\n\n getPatternSrc() {\n const dotWidth = 20,\n dotDistance = 5,\n patternCanvas = createCanvasElement(),\n patternCtx = patternCanvas.getContext('2d');\n\n patternCanvas.width = patternCanvas.height = dotWidth + dotDistance;\n if (patternCtx) {\n patternCtx.fillStyle = this.color;\n patternCtx.beginPath();\n patternCtx.arc(\n dotWidth / 2,\n dotWidth / 2,\n dotWidth / 2,\n 0,\n Math.PI * 2,\n false\n );\n patternCtx.closePath();\n patternCtx.fill();\n }\n return patternCanvas;\n }\n\n getPatternSrcFunction() {\n return String(this.getPatternSrc).replace(\n 'this.color',\n '\"' + this.color + '\"'\n );\n }\n\n /**\n * Creates \"pattern\" instance property\n * @param {CanvasRenderingContext2D} ctx\n */\n getPattern(ctx: CanvasRenderingContext2D) {\n return ctx.createPattern(this.source || this.getPatternSrc(), 'repeat');\n }\n\n /**\n * Sets brush styles\n * @param {CanvasRenderingContext2D} ctx\n */\n _setBrushStyles(ctx: CanvasRenderingContext2D) {\n super._setBrushStyles(ctx);\n const pattern = this.getPattern(ctx);\n pattern && (ctx.strokeStyle = pattern);\n }\n\n /**\n * Creates path\n */\n createPath(pathData: PathData) {\n const path = super.createPath(pathData),\n topLeft = path._getLeftTopCoords().scalarAdd(path.strokeWidth / 2);\n\n path.stroke = new Pattern({\n source: this.source || this.getPatternSrcFunction(),\n offsetX: -topLeft.x,\n offsetY: -topLeft.y,\n });\n return path;\n }\n}\n\nfabric.PatternBrush = PatternBrush;\n","import { fabric } from '../../HEADER';\nimport { Point } from '../point.class';\nimport { getRandomInt } from '../util/internals';\nimport { Canvas, Rect } from '../__types__';\nimport { BaseBrush } from './base_brush.class';\n\n/**\n * @todo remove transient\n */\nconst { Group, Rect, Shadow } = fabric;\n\nexport type SprayBrushPoint = {\n x: number;\n y: number;\n width: number;\n opacity: number;\n};\n\n/**\n *\n * @param rects\n * @returns\n */\nfunction getUniqueRects(rects: Rect[]) {\n const uniqueRects: Record = {};\n const uniqueRectsArray: Rect[] = [];\n\n for (let i = 0, key: string; i < rects.length; i++) {\n key = `${rects[i].left}${rects[i].top}`;\n if (!uniqueRects[key]) {\n uniqueRects[key] = true;\n uniqueRectsArray.push(rects[i]);\n }\n }\n\n return uniqueRectsArray;\n}\n\nexport class SprayBrush extends BaseBrush {\n /**\n * Width of a spray\n * @type Number\n * @default\n */\n width = 10;\n\n /**\n * Density of a spray (number of dots per chunk)\n * @type Number\n * @default\n */\n density = 20;\n\n /**\n * Width of spray dots\n * @type Number\n * @default\n */\n dotWidth = 1;\n\n /**\n * Width variance of spray dots\n * @type Number\n * @default\n */\n dotWidthVariance = 1;\n\n /**\n * Whether opacity of a dot should be random\n * @type Boolean\n * @default\n */\n randomOpacity = false;\n\n /**\n * Whether overlapping dots (rectangles) should be removed (for performance reasons)\n * @type Boolean\n * @default\n */\n optimizeOverlapping = true;\n\n private sprayChunks: SprayBrushPoint[][];\n\n private sprayChunk: SprayBrushPoint[];\n\n /**\n * Constructor\n * @param {Canvas} canvas\n * @return {SprayBrush} Instance of a spray brush\n */\n constructor(canvas: Canvas) {\n super(canvas);\n this.sprayChunks = [];\n this.sprayChunk = [];\n }\n\n /**\n * Invoked on mouse down\n * @param {Point} pointer\n */\n onMouseDown(pointer: Point) {\n this.sprayChunks = [];\n this.canvas.clearContext(this.canvas.contextTop);\n this._setShadow();\n\n this.addSprayChunk(pointer);\n this.renderChunck(this.sprayChunk);\n }\n\n /**\n * Invoked on mouse move\n * @param {Point} pointer\n */\n onMouseMove(pointer: Point) {\n if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) {\n return;\n }\n this.addSprayChunk(pointer);\n this.renderChunck(this.sprayChunk);\n }\n\n /**\n * Invoked on mouse up\n */\n onMouseUp() {\n const originalRenderOnAddRemove = this.canvas.renderOnAddRemove;\n this.canvas.renderOnAddRemove = false;\n\n const rects = [];\n\n for (let i = 0; i < this.sprayChunks.length; i++) {\n const sprayChunk = this.sprayChunks[i];\n for (let j = 0; j < sprayChunk.length; j++) {\n const chunck = sprayChunk[j];\n const rect = new Rect({\n width: chunck.width,\n height: chunck.width,\n left: chunck.x + 1,\n top: chunck.y + 1,\n originX: 'center',\n originY: 'center',\n fill: this.color,\n });\n rects.push(rect);\n }\n }\n\n const group = new Group(\n this.optimizeOverlapping ? getUniqueRects(rects) : rects,\n {\n objectCaching: true,\n layout: 'fixed',\n subTargetCheck: false,\n interactive: false,\n }\n );\n this.shadow && group.set('shadow', new Shadow(this.shadow));\n this.canvas.fire('before:path:created', { path: group });\n this.canvas.add(group);\n this.canvas.fire('path:created', { path: group });\n\n this.canvas.clearContext(this.canvas.contextTop);\n this._resetShadow();\n this.canvas.renderOnAddRemove = originalRenderOnAddRemove;\n this.canvas.requestRenderAll();\n }\n\n renderChunck(sprayChunck: SprayBrushPoint[]) {\n const ctx = this.canvas.contextTop;\n ctx.fillStyle = this.color;\n\n this._saveAndTransform(ctx);\n\n for (let i = 0; i < sprayChunck.length; i++) {\n const point = sprayChunck[i];\n ctx.globalAlpha = point.opacity;\n ctx.fillRect(point.x, point.y, point.width, point.width);\n }\n\n ctx.restore();\n }\n\n /**\n * Render all spray chunks\n */\n _render() {\n const ctx = this.canvas.contextTop;\n ctx.fillStyle = this.color;\n\n this._saveAndTransform(ctx);\n\n for (let i = 0; i < this.sprayChunks.length; i++) {\n this.renderChunck(this.sprayChunks[i]);\n }\n ctx.restore();\n }\n\n /**\n * @param {Point} pointer\n */\n addSprayChunk(pointer: Point) {\n this.sprayChunk = [];\n const radius = this.width / 2;\n\n for (let i = 0; i < this.density; i++) {\n this.sprayChunk.push({\n x: getRandomInt(pointer.x - radius, pointer.x + radius),\n y: getRandomInt(pointer.y - radius, pointer.y + radius),\n width: this.dotWidthVariance\n ? getRandomInt(\n // bottom clamp width to 1\n Math.max(1, this.dotWidth - this.dotWidthVariance),\n this.dotWidth + this.dotWidthVariance\n )\n : this.dotWidth,\n opacity: this.randomOpacity ? getRandomInt(0, 100) / 100 : 1,\n });\n }\n\n this.sprayChunks.push(this.sprayChunk);\n }\n}\n\nfabric.SprayBrush = 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\ No newline at end of file diff --git a/dist/fabric.min.d.ts b/dist/fabric.min.d.ts new file mode 100644 index 00000000000..caed0df74d1 --- /dev/null +++ b/dist/fabric.min.d.ts @@ -0,0 +1,2 @@ +export {}; +//# sourceMappingURL=fabric.min.d.ts.map \ No newline at end of file diff --git a/dist/fabric.min.d.ts.map b/dist/fabric.min.d.ts.map new file mode 100644 index 00000000000..517a339fb2b --- /dev/null +++ b/dist/fabric.min.d.ts.map @@ -0,0 +1 @@ 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'polygons-rounded', ].map(createTestFromSVG); tests.forEach(visualTestLoop(QUnit)); From c99c2e933ee8ba799cec8df92282575742b3b1b9 Mon Sep 17 00:00:00 2001 From: Andrea Bogazzi Date: Sat, 15 Oct 2022 23:53:39 +0200 Subject: [PATCH 2/5] no dists --- dist/fabric.js | 58456 ++++++++++++++++++++++++----------------------- 1 file changed, 30386 insertions(+), 28070 deletions(-) diff --git a/dist/fabric.js b/dist/fabric.js index bb04ca10feb..9b7bf655d2a 100644 --- a/dist/fabric.js +++ b/dist/fabric.js @@ -1,28761 +1,31077 @@ -'use strict'; - -class BaseConfiguration { - constructor() { - /** - * Browser-specific constant to adjust CanvasRenderingContext2D.shadowBlur value, - * which is unitless and not rendered equally across browsers. - * - * Values that work quite well (as of October 2017) are: - * - Chrome: 1.5 - * - Edge: 1.75 - * - Firefox: 0.9 - * - Safari: 0.95 - * - * @since 2.0.0 - * @type Number - * @default 1 - */ - this.browserShadowBlurConstant = 1; - /** - * Pixel per Inch as a default value set to 96. Can be changed for more realistic conversion. - */ - this.DPI = 96; - /** - * Device Pixel Ratio - * @see https://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/HTML-canvas-guide/SettingUptheCanvas/SettingUptheCanvas.html - */ - this.devicePixelRatio = 1; - /** - * Pixel limit for cache canvases. 1Mpx , 4Mpx should be fine. - * @since 1.7.14 - * @type Number - * @default - */ - this.perfLimitSizeTotal = 2097152; - /** - * Pixel limit for cache canvases width or height. IE fixes the maximum at 5000 - * @since 1.7.14 - * @type Number - * @default - */ - this.maxCacheSideLimit = 4096; - /** - * Lowest pixel limit for cache canvases, set at 256PX - * @since 1.7.14 - * @type Number - * @default - */ - this.minCacheSideLimit = 256; - /** - * When 'true', style information is not retained when copy/pasting text, making - * pasted text use destination style. - * Defaults to 'false'. - * @type Boolean - * @default - * @deprecated - */ - this.disableStyleCopyPaste = false; - /** - * Enable webgl for filtering picture is available - * A filtering backend will be initialized, this will both take memory and - * time since a default 2048x2048 canvas will be created for the gl context - * @since 2.0.0 - * @type Boolean - * @default - */ - this.enableGLFiltering = true; - /** - * if webgl is enabled and available, textureSize will determine the size - * of the canvas backend - * - * In order to support old hardware set to `2048` to avoid OOM - * - * @since 2.0.0 - * @type Number - * @default - */ - this.textureSize = 4096; - /** - * Skip performance testing of setupGLContext and force the use of putImageData that seems to be the one that works best on - * Chrome + old hardware. if your users are experiencing empty images after filtering you may try to force this to true - * this has to be set before instantiating the filtering backend ( before filtering the first image ) - * @type Boolean - * @default false - */ - this.forceGLPutImageData = false; - /** - * If disabled boundsOfCurveCache is not used. For apps that make heavy usage of pencil drawing probably disabling it is better - * @default true - */ - this.cachesBoundsOfCurve = true; - /** - * Map of font files - * Map of font files - */ - this.fontPaths = {}; - /** - * Defines the number of fraction digits to use when serializing object values. - * Used in exporting methods (`toObject`, `toJSON`, `toSVG`) - * You can use it to increase/decrease precision of such values like left, top, scaleX, scaleY, etc. - */ - this.NUM_FRACTION_DIGITS = 4; - } -} -class Configuration extends BaseConfiguration { - constructor(config) { - super(); - this.configure(config); - } - configure(config = {}) { - Object.assign(this, config); - } - /** - * Map of font files - */ - addFonts(paths = {}) { - this.fontPaths = Object.assign(Object.assign({}, this.fontPaths), paths); - } - removeFonts(fontFamilys = []) { - fontFamilys.forEach((fontFamily) => { - delete this.fontPaths[fontFamily]; - }); - } - clearFonts() { - this.fontPaths = {}; - } - restoreDefaults(keys) { - const defaults = new BaseConfiguration(); - const config = (keys === null || keys === void 0 ? void 0 : keys.reduce((acc, key) => { - acc[key] = defaults[key]; - return acc; - }, {})) || defaults; - this.configure(config); - } -} -const config = new Configuration(); - -class Cache { - constructor() { - /** - * Cache of widths of chars in text rendering. - */ - this.charWidthsCache = {}; - /** - * This object contains the result of arc to bezier conversion for faster retrieving if the same arc needs to be converted again. - * It was an internal variable, is accessible since version 2.3.4 - */ - this.arcToSegmentsCache = {}; - /** - * This object keeps the results of the boundsOfCurve calculation mapped by the joined arguments necessary to calculate it. - * It does speed up calculation, if you parse and add always the same paths, but in case of heavy usage of freedrawing - * you do not get any speed benefit and you get a big object in memory. - * The object was a private variable before, while now is appended to the lib so that you have access to it and you - * can eventually clear it. - * It was an internal variable, is accessible since version 2.3.4 - */ - this.boundsOfCurveCache = {}; - } - /** - * @return {Object} reference to cache - */ - getFontCache({ fontFamily, fontStyle, fontWeight, }) { - fontFamily = fontFamily.toLowerCase(); - if (!this.charWidthsCache[fontFamily]) { - this.charWidthsCache[fontFamily] = {}; - } - const fontCache = this.charWidthsCache[fontFamily]; - const cacheKey = `${fontStyle.toLowerCase()}_${(fontWeight + '').toLowerCase()}`; - if (!fontCache[cacheKey]) { - fontCache[cacheKey] = {}; - } - return fontCache[cacheKey]; - } - /** - * Clear char widths cache for the given font family or all the cache if no - * fontFamily is specified. - * Use it if you know you are loading fonts in a lazy way and you are not waiting - * for custom fonts to load properly when adding text objects to the canvas. - * If a text object is added when its own font is not loaded yet, you will get wrong - * measurement and so wrong bounding boxes. - * After the font cache is cleared, either change the textObject text content or call - * initDimensions() to trigger a recalculation - * @memberOf fabric.util - * @param {String} [fontFamily] font family to clear - */ - clearFontCache(fontFamily) { - fontFamily = (fontFamily || '').toLowerCase(); - if (!fontFamily) { - this.charWidthsCache = {}; - } - else if (this.charWidthsCache[fontFamily]) { - delete this.charWidthsCache[fontFamily]; - } - } - /** - * Given current aspect ratio, determines the max width and height that can - * respect the total allowed area for the cache. - * @memberOf fabric.util - * @param {number} ar aspect ratio - * @return {number[]} Limited dimensions X and Y - */ - limitDimsByArea(ar) { - const { perfLimitSizeTotal } = config; - const roughWidth = Math.sqrt(perfLimitSizeTotal * ar); - // we are not returning a point on purpose, to avoid circular dependencies - // this is an internal utility - return [ - Math.floor(roughWidth), - Math.floor(perfLimitSizeTotal / roughWidth), - ]; - } -} -const cache = new Cache(); - -var version = "5.1.0"; - -function noop() { } -const halfPI = Math.PI / 2; -const twoMathPi = Math.PI * 2; -const PiBy180 = Math.PI / 180; -const iMatrix = Object.freeze([1, 0, 0, 1, 0, 0]); -const DEFAULT_SVG_FONT_SIZE = 16; -/* "magic number" for bezier approximations of arcs (http://itc.ktu.lt/itc354/Riskus354.pdf) */ -const kRect = 1 - 0.5522847498; - -var fabric$1 = fabric$1 || { - version: version, - config, - cache, - iMatrix, -}; +/* build: `node build.js modules=ALL exclude=gestures,accessors,erasing requirejs minifier=uglifyjs` */ +/*! Fabric.js Copyright 2008-2015, Printio (Juriy Zaytsev, Maxim Chernyak) */ + +var fabric = fabric || { version: '5.1.0' }; if (typeof exports !== 'undefined') { - exports.fabric = fabric$1; + exports.fabric = fabric; } +/* _AMD_START_ */ else if (typeof define === 'function' && define.amd) { - /* _AMD_START_ */ - define([], function () { - return fabric$1; - }); + define([], function() { return fabric; }); } /* _AMD_END_ */ if (typeof document !== 'undefined' && typeof window !== 'undefined') { - if (document instanceof - (typeof HTMLDocument !== 'undefined' ? HTMLDocument : Document)) { - fabric$1.document = document; - } - else { - fabric$1.document = document.implementation.createHTMLDocument(''); - } - fabric$1.window = window; - window.fabric = fabric$1; + if (document instanceof (typeof HTMLDocument !== 'undefined' ? HTMLDocument : Document)) { + fabric.document = document; + } + else { + fabric.document = document.implementation.createHTMLDocument(''); + } + fabric.window = window; } else { - // assume we're running under node.js when document/window are not present - var jsdom = require('jsdom'); - var virtualWindow = new jsdom.JSDOM(decodeURIComponent('%3C!DOCTYPE%20html%3E%3Chtml%3E%3Chead%3E%3C%2Fhead%3E%3Cbody%3E%3C%2Fbody%3E%3C%2Fhtml%3E'), { - features: { - FetchExternalResources: ['img'], - }, - resources: 'usable', + // assume we're running under node.js when document/window are not present + var jsdom = require('jsdom'); + var virtualWindow = new jsdom.JSDOM( + decodeURIComponent('%3C!DOCTYPE%20html%3E%3Chtml%3E%3Chead%3E%3C%2Fhead%3E%3Cbody%3E%3C%2Fbody%3E%3C%2Fhtml%3E'), + { + features: { + FetchExternalResources: ['img'] + }, + resources: 'usable' }).window; - fabric$1.document = virtualWindow.document; - fabric$1.jsdomImplForWrapper = - require('jsdom/lib/jsdom/living/generated/utils').implForWrapper; - fabric$1.nodeCanvas = require('jsdom/lib/jsdom/utils').Canvas; - fabric$1.window = virtualWindow; - global.DOMParser = fabric$1.window.DOMParser; + fabric.document = virtualWindow.document; + fabric.jsdomImplForWrapper = require('jsdom/lib/jsdom/living/generated/utils').implForWrapper; + fabric.nodeCanvas = require('jsdom/lib/jsdom/utils').Canvas; + fabric.window = virtualWindow; + DOMParser = fabric.window.DOMParser; } + /** * True when in environment that supports touch events * @type boolean */ -fabric$1.isTouchSupported = - 'ontouchstart' in fabric$1.window || - 'ontouchstart' in fabric$1.document || - (fabric$1.window && - fabric$1.window.navigator && - fabric$1.window.navigator.maxTouchPoints > 0); +fabric.isTouchSupported = 'ontouchstart' in fabric.window || 'ontouchstart' in fabric.document || + (fabric.window && fabric.window.navigator && fabric.window.navigator.maxTouchPoints > 0); + /** * True when in environment that's probably Node.js * @type boolean */ -fabric$1.isLikelyNode = - typeof Buffer !== 'undefined' && typeof window === 'undefined'; +fabric.isLikelyNode = typeof Buffer !== 'undefined' && + typeof window === 'undefined'; + /* _FROM_SVG_START_ */ /** * Attributes parsed from all SVG elements * @type array */ -fabric$1.SHARED_ATTRIBUTES = [ - 'display', - 'transform', - 'fill', - 'fill-opacity', - 'fill-rule', - 'opacity', - 'stroke', - 'stroke-dasharray', - 'stroke-linecap', - 'stroke-dashoffset', - 'stroke-linejoin', - 'stroke-miterlimit', - 'stroke-opacity', - 'stroke-width', - 'id', - 'paint-order', - 'vector-effect', - 'instantiated_by_use', - 'clip-path', +fabric.SHARED_ATTRIBUTES = [ + 'display', + 'transform', + 'fill', 'fill-opacity', 'fill-rule', + 'opacity', + 'stroke', 'stroke-dasharray', 'stroke-linecap', 'stroke-dashoffset', + 'stroke-linejoin', 'stroke-miterlimit', + 'stroke-opacity', 'stroke-width', + 'id', 'paint-order', 'vector-effect', + 'instantiated_by_use', 'clip-path', ]; /* _FROM_SVG_END_ */ + /** - * @todo move to config when window is exported + * Pixel per Inch as a default value set to 96. Can be changed for more realistic conversion. */ -config.configure({ - devicePixelRatio: fabric$1.window.devicePixelRatio || - fabric$1.window.webkitDevicePixelRatio || - fabric$1.window.mozDevicePixelRatio || - 1, -}); +fabric.DPI = 96; +fabric.reNum = '(?:[-+]?(?:\\d+|\\d*\\.\\d+)(?:[eE][-+]?\\d+)?)'; +fabric.commaWsp = '(?:\\s+,?\\s*|,\\s*)'; +fabric.rePathCommand = /([-+]?((\d+\.\d+)|((\d+)|(\.\d+)))(?:[eE][-+]?\d+)?)/ig; +fabric.reNonWord = /[ \n\.,;!\?\-]/; +fabric.fontPaths = { }; +fabric.iMatrix = [1, 0, 0, 1, 0, 0]; +fabric.svgNS = 'http://www.w3.org/2000/svg'; -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - /** - * @private - * @param {String} eventName - * @param {Function} handler - */ - function _removeEventListener(eventName, handler) { - if (!this.__eventListeners[eventName]) { - return; - } - var eventListener = this.__eventListeners[eventName]; - if (handler) { - eventListener[eventListener.indexOf(handler)] = false; - } - else { - eventListener.fill(false); - } - } - /** - * Observes specified event - * @memberOf fabric.Observable - * @alias on - * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) - * @param {Function} handler Function that receives a notification when an event of the specified type occurs - * @return {Function} disposer - */ - function on(eventName, handler) { - if (!this.__eventListeners) { - this.__eventListeners = {}; - } - // one object with key/value pairs was passed - if (arguments.length === 1) { - for (var prop in eventName) { - this.on(prop, eventName[prop]); - } - } - else { - if (!this.__eventListeners[eventName]) { - this.__eventListeners[eventName] = []; - } - this.__eventListeners[eventName].push(handler); - } - return off.bind(this, eventName, handler); - } - function _once(eventName, handler) { - var _handler = function () { - handler.apply(this, arguments); - this.off(eventName, _handler); - }.bind(this); - this.on(eventName, _handler); - return _handler; - } - /** - * Observes specified event **once** - * @memberOf fabric.Observable - * @alias once - * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) - * @param {Function} handler Function that receives a notification when an event of the specified type occurs - * @return {Function} disposer - */ - function once(eventName, handler) { - // one object with key/value pairs was passed - if (arguments.length === 1) { - var handlers = {}; - for (var prop in eventName) { - handlers[prop] = _once.call(this, prop, eventName[prop]); - } - return off.bind(this, handlers); - } - else { - var _handler = _once.call(this, eventName, handler); - return off.bind(this, eventName, _handler); - } - } - /** - * Stops event observing for a particular event handler. Calling this method - * without arguments removes all handlers for all events - * @memberOf fabric.Observable - * @alias off - * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) - * @param {Function} handler Function to be deleted from EventListeners - */ - function off(eventName, handler) { - if (!this.__eventListeners) { - return; - } - // remove all key/value pairs (event name -> event handler) - if (arguments.length === 0) { - for (eventName in this.__eventListeners) { - _removeEventListener.call(this, eventName); - } - } - // one object with key/value pairs was passed - else if (typeof eventName === 'object' && typeof handler === 'undefined') { - for (var prop in eventName) { - _removeEventListener.call(this, prop, eventName[prop]); - } - } - else { - _removeEventListener.call(this, eventName, handler); - } - } - /** - * Fires event with an optional options object - * @memberOf fabric.Observable - * @param {String} eventName Event name to fire - * @param {Object} [options] Options object - */ - function fire(eventName, options) { - if (!this.__eventListeners) { - return; - } - var listenersForEvent = this.__eventListeners[eventName]; - if (!listenersForEvent) { - return; - } - for (var i = 0, len = listenersForEvent.length; i < len; i++) { - listenersForEvent[i] && listenersForEvent[i].call(this, options || {}); - } - this.__eventListeners[eventName] = listenersForEvent.filter(function (value) { - return value !== false; - }); - } - /** - * @namespace fabric.Observable - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#events} - * @see {@link http://fabricjs.com/events|Events demo} - */ - fabric.Observable = { - fire: fire, - on: on, - once: once, - off: off, - }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - /** - * @namespace fabric.Collection - */ - fabric.Collection = { - /** - * @type {fabric.Object[]} - */ - _objects: [], - /** - * Adds objects to collection, Canvas or Group, then renders canvas - * (if `renderOnAddRemove` is not `false`). - * Objects should be instances of (or inherit from) fabric.Object - * @private - * @param {fabric.Object[]} objects to add - * @param {(object:fabric.Object) => any} [callback] - * @returns {number} new array length - */ - add: function (objects, callback) { - var size = this._objects.push.apply(this._objects, objects); - if (callback) { - for (var i = 0; i < objects.length; i++) { - callback.call(this, objects[i]); - } - } - return size; - }, - /** - * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`) - * An object should be an instance of (or inherit from) fabric.Object - * @private - * @param {fabric.Object|fabric.Object[]} objects Object(s) to insert - * @param {Number} index Index to insert object at - * @param {(object:fabric.Object) => any} [callback] - * @returns {number} new array length - */ - insertAt: function (objects, index, callback) { - var args = [index, 0].concat(objects); - this._objects.splice.apply(this._objects, args); - if (callback) { - for (var i = 2; i < args.length; i++) { - callback.call(this, args[i]); - } - } - return this._objects.length; - }, - /** - * Removes objects from a collection, then renders canvas (if `renderOnAddRemove` is not `false`) - * @private - * @param {fabric.Object[]} objectsToRemove objects to remove - * @param {(object:fabric.Object) => any} [callback] function to call for each object removed - * @returns {fabric.Object[]} removed objects - */ - remove: function (objectsToRemove, callback) { - var objects = this._objects, removed = []; - for (var i = 0, object, index; i < objectsToRemove.length; i++) { - object = objectsToRemove[i]; - index = objects.indexOf(object); - // only call onObjectRemoved if an object was actually removed - if (index !== -1) { - objects.splice(index, 1); - removed.push(object); - callback && callback.call(this, object); - } - } - return removed; - }, - /** - * Executes given function for each object in this group - * @param {Function} callback - * Callback invoked with current object as first argument, - * index - as second and an array of all objects - as third. - * Callback is invoked in a context of Global Object (e.g. `window`) - * when no `context` argument is given - * - * @param {Object} context Context (aka thisObject) - * @return {Self} thisArg - * @chainable - */ - forEachObject: function (callback, context) { - var objects = this.getObjects(); - for (var i = 0; i < objects.length; i++) { - callback.call(context, objects[i], i, objects); - } - return this; - }, - /** - * Returns an array of children objects of this instance - * @param {...String} [types] When specified, only objects of these types are returned - * @return {Array} - */ - getObjects: function () { - if (arguments.length === 0) { - return this._objects.concat(); - } - var types = Array.from(arguments); - return this._objects.filter(function (o) { - return types.indexOf(o.type) > -1; - }); - }, - /** - * Returns object at specified index - * @param {Number} index - * @return {Object} object at index - */ - item: function (index) { - return this._objects[index]; - }, - /** - * Returns true if collection contains no objects - * @return {Boolean} true if collection is empty - */ - isEmpty: function () { - return this._objects.length === 0; - }, - /** - * Returns a size of a collection (i.e: length of an array containing its objects) - * @return {Number} Collection size - */ - size: function () { - return this._objects.length; - }, - /** - * Returns true if collection contains an object.\ - * **Prefer using {@link `fabric.Object#isDescendantOf`} for performance reasons** - * instead of a.contains(b) use b.isDescendantOf(a) - * @param {Object} object Object to check against - * @param {Boolean} [deep=false] `true` to check all descendants, `false` to check only `_objects` - * @return {Boolean} `true` if collection contains an object - */ - contains: function (object, deep) { - if (this._objects.indexOf(object) > -1) { - return true; - } - else if (deep) { - return this._objects.some(function (obj) { - return (typeof obj.contains === 'function' && obj.contains(object, true)); - }); - } - return false; - }, - /** - * Returns number representation of a collection complexity - * @return {Number} complexity - */ - complexity: function () { - return this._objects.reduce(function (memo, current) { - memo += current.complexity ? current.complexity() : 0; - return memo; - }, 0); - }, - }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - /** - * @namespace fabric.CommonMethods - */ - fabric.CommonMethods = { - /** - * Sets object's properties from options - * @param {Object} [options] Options object - */ - _setOptions: function (options) { - for (var prop in options) { - this.set(prop, options[prop]); - } - }, - /** - * @private - */ - _setObject: function (obj) { - for (var prop in obj) { - this._set(prop, obj[prop]); - } - }, - /** - * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`. - * @param {String|Object} key Property name or object (if object, iterate over the object properties) - * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one) - * @return {fabric.Object} thisArg - * @chainable - */ - set: function (key, value) { - if (typeof key === 'object') { - this._setObject(key); - } - else { - this._set(key, value); - } - return this; - }, - _set: function (key, value) { - this[key] = value; - }, - /** - * Toggles specified property from `true` to `false` or from `false` to `true` - * @param {String} property Property to toggle - * @return {fabric.Object} thisArg - * @chainable - */ - toggle: function (property) { - var value = this.get(property); - if (typeof value === 'boolean') { - this.set(property, !value); - } - return this; - }, - /** - * Basic getter - * @param {String} property Property name - * @return {*} value of a property - */ - get: function (property) { - return this[property]; - }, - }; -})(typeof exports !== 'undefined' ? exports : window); +/** + * Pixel limit for cache canvases. 1Mpx , 4Mpx should be fine. + * @since 1.7.14 + * @type Number + * @default + */ +fabric.perfLimitSizeTotal = 2097152; /** - * Calculate the cos of an angle, avoiding returning floats for known results - * This function is here just to avoid getting 0.999999999999999 when dealing - * with numbers that are really 1 or 0. - * @static - * @memberOf fabric.util - * @param {TRadian} angle the angle - * @return {Number} the cosin value for angle. + * Pixel limit for cache canvases width or height. IE fixes the maximum at 5000 + * @since 1.7.14 + * @type Number + * @default */ -const cos = (angle) => { - if (angle === 0) { - return 1; - } - const angleSlice = Math.abs(angle) / halfPI; - switch (angleSlice) { - case 1: - case 3: - return 0; - case 2: - return -1; - } - return Math.cos(angle); -}; +fabric.maxCacheSideLimit = 4096; /** - * Calculate the cos of an angle, avoiding returning floats for known results - * This function is here just to avoid getting 0.999999999999999 when dealing - * with numbers that are really 1 or 0. - * @static - * @memberOf fabric.util - * @param {TRadian} angle the angle - * @return {Number} the sin value for angle. + * Lowest pixel limit for cache canvases, set at 256PX + * @since 1.7.14 + * @type Number + * @default */ -const sin = (angle) => { - if (angle === 0) { - return 0; - } - const angleSlice = angle / halfPI; - const value = Math.sign(angle); - switch (angleSlice) { - case 1: - return value; - case 2: - return 0; - case 3: - return -value; - } - return Math.sin(angle); -}; +fabric.minCacheSideLimit = 256; /** - * Adaptation of work of Kevin Lindsey(kevin@kevlindev.com) + * Cache Object for widths of chars in text rendering. */ -class Point { - constructor(arg0 = 0, y = 0) { - this.type = 'point'; - if (typeof arg0 === 'object') { - this.x = arg0.x; - this.y = arg0.y; - } - else { - this.x = arg0; - this.y = y; - } +fabric.charWidthsCache = { }; + +/** + * if webgl is enabled and available, textureSize will determine the size + * of the canvas backend + * @since 2.0.0 + * @type Number + * @default + */ +fabric.textureSize = 2048; + +/** + * When 'true', style information is not retained when copy/pasting text, making + * pasted text use destination style. + * Defaults to 'false'. + * @type Boolean + * @default + */ +fabric.disableStyleCopyPaste = false; + +/** + * Enable webgl for filtering picture is available + * A filtering backend will be initialized, this will both take memory and + * time since a default 2048x2048 canvas will be created for the gl context + * @since 2.0.0 + * @type Boolean + * @default + */ +fabric.enableGLFiltering = true; + +/** + * Device Pixel Ratio + * @see https://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/HTML-canvas-guide/SettingUptheCanvas/SettingUptheCanvas.html + */ +fabric.devicePixelRatio = fabric.window.devicePixelRatio || + fabric.window.webkitDevicePixelRatio || + fabric.window.mozDevicePixelRatio || + 1; +/** + * Browser-specific constant to adjust CanvasRenderingContext2D.shadowBlur value, + * which is unitless and not rendered equally across browsers. + * + * Values that work quite well (as of October 2017) are: + * - Chrome: 1.5 + * - Edge: 1.75 + * - Firefox: 0.9 + * - Safari: 0.95 + * + * @since 2.0.0 + * @type Number + * @default 1 + */ +fabric.browserShadowBlurConstant = 1; + +/** + * This object contains the result of arc to bezier conversion for faster retrieving if the same arc needs to be converted again. + * It was an internal variable, is accessible since version 2.3.4 + */ +fabric.arcToSegmentsCache = { }; + +/** + * This object keeps the results of the boundsOfCurve calculation mapped by the joined arguments necessary to calculate it. + * It does speed up calculation, if you parse and add always the same paths, but in case of heavy usage of freedrawing + * you do not get any speed benefit and you get a big object in memory. + * The object was a private variable before, while now is appended to the lib so that you have access to it and you + * can eventually clear it. + * It was an internal variable, is accessible since version 2.3.4 + */ +fabric.boundsOfCurveCache = { }; + +/** + * If disabled boundsOfCurveCache is not used. For apps that make heavy usage of pencil drawing probably disabling it is better + * @default true + */ +fabric.cachesBoundsOfCurve = true; + +/** + * Skip performance testing of setupGLContext and force the use of putImageData that seems to be the one that works best on + * Chrome + old hardware. if your users are experiencing empty images after filtering you may try to force this to true + * this has to be set before instantiating the filtering backend ( before filtering the first image ) + * @type Boolean + * @default false + */ +fabric.forceGLPutImageData = false; + +fabric.initFilterBackend = function() { + if (fabric.enableGLFiltering && fabric.isWebglSupported && fabric.isWebglSupported(fabric.textureSize)) { + console.log('max texture size: ' + fabric.maxTextureSize); + return (new fabric.WebglFilterBackend({ tileSize: fabric.textureSize })); + } + else if (fabric.Canvas2dFilterBackend) { + return (new fabric.Canvas2dFilterBackend()); + } +}; + + +if (typeof document !== 'undefined' && typeof window !== 'undefined') { + // ensure globality even if entire library were function wrapped (as in Meteor.js packaging system) + window.fabric = fabric; +} + + +(function() { + + /** + * @private + * @param {String} eventName + * @param {Function} handler + */ + function _removeEventListener(eventName, handler) { + if (!this.__eventListeners[eventName]) { + return; + } + var eventListener = this.__eventListeners[eventName]; + if (handler) { + eventListener[eventListener.indexOf(handler)] = false; } - /** - * Adds another point to this one and returns another one - * @param {Point} that - * @return {Point} new Point instance with added values - */ - add(that) { - return new Point(this.x + that.x, this.y + that.y); + else { + fabric.util.array.fill(eventListener, false); } - /** - * Adds another point to this one - * @param {Point} that - * @return {Point} thisArg - * @chainable - * @deprecated - */ - addEquals(that) { - this.x += that.x; - this.y += that.y; - return this; + } + + /** + * Observes specified event + * @memberOf fabric.Observable + * @alias on + * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) + * @param {Function} handler Function that receives a notification when an event of the specified type occurs + * @return {Self} thisArg + * @chainable + */ + function on(eventName, handler) { + if (!this.__eventListeners) { + this.__eventListeners = { }; + } + // one object with key/value pairs was passed + if (arguments.length === 1) { + for (var prop in eventName) { + this.on(prop, eventName[prop]); + } } - /** - * Adds value to this point and returns a new one - * @param {Number} scalar - * @return {Point} new Point with added value - */ - scalarAdd(scalar) { - return new Point(this.x + scalar, this.y + scalar); + else { + if (!this.__eventListeners[eventName]) { + this.__eventListeners[eventName] = []; + } + this.__eventListeners[eventName].push(handler); } - /** - * Adds value to this point - * @param {Number} scalar - * @return {Point} thisArg - * @chainable - * @deprecated - */ - scalarAddEquals(scalar) { - this.x += scalar; - this.y += scalar; - return this; + return this; + } + + function _once(eventName, handler) { + var _handler = function () { + handler.apply(this, arguments); + this.off(eventName, _handler); + }.bind(this); + this.on(eventName, _handler); + } + + function once(eventName, handler) { + // one object with key/value pairs was passed + if (arguments.length === 1) { + for (var prop in eventName) { + _once.call(this, prop, eventName[prop]); + } } - /** - * Subtracts another point from this point and returns a new one - * @param {Point} that - * @return {Point} new Point object with subtracted values - */ - subtract(that) { - return new Point(this.x - that.x, this.y - that.y); + else { + _once.call(this, eventName, handler); } - /** - * Subtracts another point from this point - * @param {Point} that - * @return {Point} thisArg - * @chainable - * @deprecated - */ - subtractEquals(that) { - this.x -= that.x; - this.y -= that.y; - return this; + return this; + } + + /** + * Stops event observing for a particular event handler. Calling this method + * without arguments removes all handlers for all events + * @memberOf fabric.Observable + * @alias off + * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler}) + * @param {Function} handler Function to be deleted from EventListeners + * @return {Self} thisArg + * @chainable + */ + function off(eventName, handler) { + if (!this.__eventListeners) { + return this; } - /** - * Subtracts value from this point and returns a new one - * @param {Number} scalar - * @return {Point} - */ - scalarSubtract(scalar) { - return new Point(this.x - scalar, this.y - scalar); + + // remove all key/value pairs (event name -> event handler) + if (arguments.length === 0) { + for (eventName in this.__eventListeners) { + _removeEventListener.call(this, eventName); + } + } + // one object with key/value pairs was passed + else if (arguments.length === 1 && typeof arguments[0] === 'object') { + for (var prop in eventName) { + _removeEventListener.call(this, prop, eventName[prop]); + } } - /** - * Subtracts value from this point - * @param {Number} scalar - * @return {Point} thisArg - * @chainable - * @deprecated - */ - scalarSubtractEquals(scalar) { - this.x -= scalar; - this.y -= scalar; - return this; + else { + _removeEventListener.call(this, eventName, handler); } - /** - * Multiplies this point by another value and returns a new one - * @param {Point} that - * @return {Point} - */ - multiply(that) { - return new Point(this.x * that.x, this.y * that.y); + return this; + } + + /** + * Fires event with an optional options object + * @memberOf fabric.Observable + * @param {String} eventName Event name to fire + * @param {Object} [options] Options object + * @return {Self} thisArg + * @chainable + */ + function fire(eventName, options) { + if (!this.__eventListeners) { + return this; } - /** - * Multiplies this point by a value and returns a new one - * @param {Number} scalar - * @return {Point} - */ - scalarMultiply(scalar) { - return new Point(this.x * scalar, this.y * scalar); + + var listenersForEvent = this.__eventListeners[eventName]; + if (!listenersForEvent) { + return this; } - /** - * Multiplies this point by a value - * @param {Number} scalar - * @return {Point} thisArg - * @chainable - * @deprecated - */ - scalarMultiplyEquals(scalar) { - this.x *= scalar; - this.y *= scalar; - return this; + + for (var i = 0, len = listenersForEvent.length; i < len; i++) { + listenersForEvent[i] && listenersForEvent[i].call(this, options || { }); } - /** - * Divides this point by another and returns a new one - * @param {Point} that - * @return {Point} - */ - divide(that) { - return new Point(this.x / that.x, this.y / that.y); + this.__eventListeners[eventName] = listenersForEvent.filter(function(value) { + return value !== false; + }); + return this; + } + + /** + * @namespace fabric.Observable + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#events} + * @see {@link http://fabricjs.com/events|Events demo} + */ + fabric.Observable = { + fire: fire, + on: on, + once: once, + off: off, + }; +})(); + + +/** + * @namespace fabric.Collection + */ +fabric.Collection = { + + _objects: [], + + /** + * Adds objects to collection, Canvas or Group, then renders canvas + * (if `renderOnAddRemove` is not `false`). + * in case of Group no changes to bounding box are made. + * Objects should be instances of (or inherit from) fabric.Object + * Use of this function is highly discouraged for groups. + * you can add a bunch of objects with the add method but then you NEED + * to run a addWithUpdate call for the Group class or position/bbox will be wrong. + * @param {...fabric.Object} object Zero or more fabric instances + * @return {Self} thisArg + * @chainable + */ + add: function () { + this._objects.push.apply(this._objects, arguments); + if (this._onObjectAdded) { + for (var i = 0, length = arguments.length; i < length; i++) { + this._onObjectAdded(arguments[i]); + } + } + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + + /** + * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`) + * An object should be an instance of (or inherit from) fabric.Object + * Use of this function is highly discouraged for groups. + * you can add a bunch of objects with the insertAt method but then you NEED + * to run a addWithUpdate call for the Group class or position/bbox will be wrong. + * @param {Object} object Object to insert + * @param {Number} index Index to insert object at + * @param {Boolean} nonSplicing When `true`, no splicing (shifting) of objects occurs + * @return {Self} thisArg + * @chainable + */ + insertAt: function (object, index, nonSplicing) { + var objects = this._objects; + if (nonSplicing) { + objects[index] = object; } - /** - * Divides this point by a value and returns a new one - * @param {Number} scalar - * @return {Point} - */ - scalarDivide(scalar) { - return new Point(this.x / scalar, this.y / scalar); + else { + objects.splice(index, 0, object); } - /** - * Divides this point by a value - * @param {Number} scalar - * @return {Point} thisArg - * @chainable - * @deprecated - */ - scalarDivideEquals(scalar) { - this.x /= scalar; - this.y /= scalar; - return this; + this._onObjectAdded && this._onObjectAdded(object); + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + + /** + * Removes objects from a collection, then renders canvas (if `renderOnAddRemove` is not `false`) + * @param {...fabric.Object} object Zero or more fabric instances + * @return {Self} thisArg + * @chainable + */ + remove: function() { + var objects = this._objects, + index, somethingRemoved = false; + + for (var i = 0, length = arguments.length; i < length; i++) { + index = objects.indexOf(arguments[i]); + + // only call onObjectRemoved if an object was actually removed + if (index !== -1) { + somethingRemoved = true; + objects.splice(index, 1); + this._onObjectRemoved && this._onObjectRemoved(arguments[i]); + } } - /** - * Returns true if this point is equal to another one - * @param {Point} that - * @return {Boolean} - */ - eq(that) { - return this.x === that.x && this.y === that.y; + + this.renderOnAddRemove && somethingRemoved && this.requestRenderAll(); + return this; + }, + + /** + * Executes given function for each object in this group + * @param {Function} callback + * Callback invoked with current object as first argument, + * index - as second and an array of all objects - as third. + * Callback is invoked in a context of Global Object (e.g. `window`) + * when no `context` argument is given + * + * @param {Object} context Context (aka thisObject) + * @return {Self} thisArg + * @chainable + */ + forEachObject: function(callback, context) { + var objects = this.getObjects(); + for (var i = 0, len = objects.length; i < len; i++) { + callback.call(context, objects[i], i, objects); + } + return this; + }, + + /** + * Returns an array of children objects of this instance + * Type parameter introduced in 1.3.10 + * since 2.3.5 this method return always a COPY of the array; + * @param {String} [type] When specified, only objects of this type are returned + * @return {Array} + */ + getObjects: function(type) { + if (typeof type === 'undefined') { + return this._objects.concat(); + } + return this._objects.filter(function(o) { + return o.type === type; + }); + }, + + /** + * Returns object at specified index + * @param {Number} index + * @return {Self} thisArg + */ + item: function (index) { + return this._objects[index]; + }, + + /** + * Returns true if collection contains no objects + * @return {Boolean} true if collection is empty + */ + isEmpty: function () { + return this._objects.length === 0; + }, + + /** + * Returns a size of a collection (i.e: length of an array containing its objects) + * @return {Number} Collection size + */ + size: function() { + return this._objects.length; + }, + + /** + * Returns true if collection contains an object + * @param {Object} object Object to check against + * @param {Boolean} [deep=false] `true` to check all descendants, `false` to check only `_objects` + * @return {Boolean} `true` if collection contains an object + */ + contains: function (object, deep) { + if (this._objects.indexOf(object) > -1) { + return true; + } + else if (deep) { + return this._objects.some(function (obj) { + return typeof obj.contains === 'function' && obj.contains(object, true); + }); } - /** - * Returns true if this point is less than another one - * @param {Point} that - * @return {Boolean} - */ - lt(that) { - return this.x < that.x && this.y < that.y; + return false; + }, + + /** + * Returns number representation of a collection complexity + * @return {Number} complexity + */ + complexity: function () { + return this._objects.reduce(function (memo, current) { + memo += current.complexity ? current.complexity() : 0; + return memo; + }, 0); + } +}; + + +/** + * @namespace fabric.CommonMethods + */ +fabric.CommonMethods = { + + /** + * Sets object's properties from options + * @param {Object} [options] Options object + */ + _setOptions: function(options) { + for (var prop in options) { + this.set(prop, options[prop]); + } + }, + + /** + * @private + * @param {Object} [filler] Options object + * @param {String} [property] property to set the Gradient to + */ + _initGradient: function(filler, property) { + if (filler && filler.colorStops && !(filler instanceof fabric.Gradient)) { + this.set(property, new fabric.Gradient(filler)); + } + }, + + /** + * @private + * @param {Object} [filler] Options object + * @param {String} [property] property to set the Pattern to + * @param {Function} [callback] callback to invoke after pattern load + */ + _initPattern: function(filler, property, callback) { + if (filler && filler.source && !(filler instanceof fabric.Pattern)) { + this.set(property, new fabric.Pattern(filler, callback)); } - /** - * Returns true if this point is less than or equal to another one - * @param {Point} that - * @return {Boolean} - */ - lte(that) { - return this.x <= that.x && this.y <= that.y; + else { + callback && callback(); } - /** - - * Returns true if this point is greater another one - * @param {Point} that - * @return {Boolean} - */ - gt(that) { - return this.x > that.x && this.y > that.y; + }, + + /** + * @private + */ + _setObject: function(obj) { + for (var prop in obj) { + this._set(prop, obj[prop]); + } + }, + + /** + * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`. + * @param {String|Object} key Property name or object (if object, iterate over the object properties) + * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one) + * @return {fabric.Object} thisArg + * @chainable + */ + set: function(key, value) { + if (typeof key === 'object') { + this._setObject(key); } - /** - * Returns true if this point is greater than or equal to another one - * @param {Point} that - * @return {Boolean} - */ - gte(that) { - return this.x >= that.x && this.y >= that.y; + else { + this._set(key, value); } + return this; + }, + + _set: function(key, value) { + this[key] = value; + }, + + /** + * Toggles specified property from `true` to `false` or from `false` to `true` + * @param {String} property Property to toggle + * @return {fabric.Object} thisArg + * @chainable + */ + toggle: function(property) { + var value = this.get(property); + if (typeof value === 'boolean') { + this.set(property, !value); + } + return this; + }, + + /** + * Basic getter + * @param {String} property Property name + * @return {*} value of a property + */ + get: function(property) { + return this[property]; + } +}; + + +(function(global) { + + var sqrt = Math.sqrt, + atan2 = Math.atan2, + pow = Math.pow, + PiBy180 = Math.PI / 180, + PiBy2 = Math.PI / 2; + + /** + * @namespace fabric.util + */ + fabric.util = { + /** - * Returns new point which is the result of linear interpolation with this one and another one - * @param {Point} that - * @param {Number} t , position of interpolation, between 0 and 1 default 0.5 - * @return {Point} + * Calculate the cos of an angle, avoiding returning floats for known results + * @static + * @memberOf fabric.util + * @param {Number} angle the angle in radians or in degree + * @return {Number} */ - lerp(that, t = 0.5) { - t = Math.max(Math.min(1, t), 0); - return new Point(this.x + (that.x - this.x) * t, this.y + (that.y - this.y) * t); - } + cos: function(angle) { + if (angle === 0) { return 1; } + if (angle < 0) { + // cos(a) = cos(-a) + angle = -angle; + } + var angleSlice = angle / PiBy2; + switch (angleSlice) { + case 1: case 3: return 0; + case 2: return -1; + } + return Math.cos(angle); + }, + /** - * Returns distance from this point and another one - * @param {Point} that + * Calculate the sin of an angle, avoiding returning floats for known results + * @static + * @memberOf fabric.util + * @param {Number} angle the angle in radians or in degree * @return {Number} */ - distanceFrom(that) { - const dx = this.x - that.x, dy = this.y - that.y; - return Math.sqrt(dx * dx + dy * dy); - } + sin: function(angle) { + if (angle === 0) { return 0; } + var angleSlice = angle / PiBy2, sign = 1; + if (angle < 0) { + // sin(-a) = -sin(a) + sign = -1; + } + switch (angleSlice) { + case 1: return sign; + case 2: return 0; + case 3: return -sign; + } + return Math.sin(angle); + }, + /** - * Returns the point between this point and another one - * @param {Point} that - * @return {Point} + * Removes value from an array. + * Presence of value (and its position in an array) is determined via `Array.prototype.indexOf` + * @static + * @memberOf fabric.util + * @param {Array} array + * @param {*} value + * @return {Array} original array */ - midPointFrom(that) { - return this.lerp(that); - } + removeFromArray: function(array, value) { + var idx = array.indexOf(value); + if (idx !== -1) { + array.splice(idx, 1); + } + return array; + }, + /** - * Returns a new point which is the min of this and another one - * @param {Point} that - * @return {Point} + * Returns random number between 2 specified ones. + * @static + * @memberOf fabric.util + * @param {Number} min lower limit + * @param {Number} max upper limit + * @return {Number} random value (between min and max) */ - min(that) { - return new Point(Math.min(this.x, that.x), Math.min(this.y, that.y)); - } + getRandomInt: function(min, max) { + return Math.floor(Math.random() * (max - min + 1)) + min; + }, + /** - * Returns a new point which is the max of this and another one - * @param {Point} that - * @return {Point} + * Transforms degrees to radians. + * @static + * @memberOf fabric.util + * @param {Number} degrees value in degrees + * @return {Number} value in radians */ - max(that) { - return new Point(Math.max(this.x, that.x), Math.max(this.y, that.y)); - } + degreesToRadians: function(degrees) { + return degrees * PiBy180; + }, + /** - * Returns string representation of this point - * @return {String} + * Transforms radians to degrees. + * @static + * @memberOf fabric.util + * @param {Number} radians value in radians + * @return {Number} value in degrees */ - toString() { - return this.x + ',' + this.y; - } + radiansToDegrees: function(radians) { + return radians / PiBy180; + }, + /** - * Sets x/y of this point - * @param {Number} x - * @param {Number} y - * @chainable - */ - setXY(x, y) { - this.x = x; - this.y = y; - return this; - } + * Rotates `point` around `origin` with `radians` + * @static + * @memberOf fabric.util + * @param {fabric.Point} point The point to rotate + * @param {fabric.Point} origin The origin of the rotation + * @param {Number} radians The radians of the angle for the rotation + * @return {fabric.Point} The new rotated point + */ + rotatePoint: function(point, origin, radians) { + var newPoint = new fabric.Point(point.x - origin.x, point.y - origin.y), + v = fabric.util.rotateVector(newPoint, radians); + return new fabric.Point(v.x, v.y).addEquals(origin); + }, + /** - * Sets x of this point - * @param {Number} x - * @chainable - */ - setX(x) { - this.x = x; - return this; - } + * Rotates `vector` with `radians` + * @static + * @memberOf fabric.util + * @param {Object} vector The vector to rotate (x and y) + * @param {Number} radians The radians of the angle for the rotation + * @return {Object} The new rotated point + */ + rotateVector: function(vector, radians) { + var sin = fabric.util.sin(radians), + cos = fabric.util.cos(radians), + rx = vector.x * cos - vector.y * sin, + ry = vector.x * sin + vector.y * cos; + return { + x: rx, + y: ry + }; + }, + /** - * Sets y of this point - * @param {Number} y - * @chainable + * Creates a vetor from points represented as a point + * @static + * @memberOf fabric.util + * + * @typedef {Object} Point + * @property {number} x + * @property {number} y + * + * @param {Point} from + * @param {Point} to + * @returns {Point} vector */ - setY(y) { - this.y = y; - return this; - } + createVector: function (from, to) { + return new fabric.Point(to.x - from.x, to.y - from.y); + }, + /** - * Sets x/y of this point from another point - * @param {Point} that - * @chainable + * Calculates angle between 2 vectors using dot product + * @static + * @memberOf fabric.util + * @param {Point} a + * @param {Point} b + * @returns the angle in radian between the vectors */ - setFromPoint(that) { - this.x = that.x; - this.y = that.y; - return this; - } + calcAngleBetweenVectors: function (a, b) { + return Math.acos((a.x * b.x + a.y * b.y) / (Math.hypot(a.x, a.y) * Math.hypot(b.x, b.y))); + }, + /** - * Swaps x/y of this point and another point - * @param {Point} that + * @static + * @memberOf fabric.util + * @param {Point} v + * @returns {Point} vector representing the unit vector of pointing to the direction of `v` */ - swap(that) { - const x = this.x, y = this.y; - this.x = that.x; - this.y = that.y; - that.x = x; - that.y = y; - } + getHatVector: function (v) { + return new fabric.Point(v.x, v.y).multiply(1 / Math.hypot(v.x, v.y)); + }, + /** - * return a cloned instance of the point - * @return {Point} - */ - clone() { - return new Point(this.x, this.y); - } + * @static + * @memberOf fabric.util + * @param {Point} A + * @param {Point} B + * @param {Point} C + * @returns {{ vector: Point, angle: number }} vector representing the bisector of A and A's angle + */ + getBisector: function (A, B, C) { + var AB = fabric.util.createVector(A, B), AC = fabric.util.createVector(A, C); + var alpha = fabric.util.calcAngleBetweenVectors(AB, AC); + // check if alpha is relative to AB->BC + var ro = fabric.util.calcAngleBetweenVectors(fabric.util.rotateVector(AB, alpha), AC); + var phi = alpha * (ro === 0 ? 1 : -1) / 2; + return { + vector: fabric.util.getHatVector(fabric.util.rotateVector(AB, phi)), + angle: alpha + }; + }, + /** - * Rotates `point` around `origin` with `radians` + * Project stroke width on points returning 2 projections for each point as follows: + * - `miter`: 2 points corresponding to the outer boundary and the inner boundary of stroke. + * - `bevel`: 2 points corresponding to the bevel boundaries, tangent to the bisector. + * - `round`: same as `bevel` + * Used to calculate object's bounding box * @static * @memberOf fabric.util - * @param {Point} origin The origin of the rotation - * @param {TRadian} radians The radians of the angle for the rotation - * @return {Point} The new rotated point - */ - rotate(radians, origin = originZero) { - // TODO benchmark and verify the add and subtract how much cost - // and then in case early return if no origin is passed - const sinus = sin(radians), cosinus = cos(radians); - const p = this.subtract(origin); - const rotated = new Point(p.x * cosinus - p.y * sinus, p.x * sinus + p.y * cosinus); - return rotated.add(origin); - } + * @param {Point[]} points + * @param {Object} options + * @param {number} options.strokeWidth + * @param {'miter'|'bevel'|'round'} options.strokeLineJoin + * @param {number} options.strokeMiterLimit https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit + * @param {boolean} options.strokeUniform + * @param {number} options.scaleX + * @param {number} options.scaleY + * @param {boolean} [openPath] whether the shape is open or not, affects the calculations of the first and last points + * @returns {fabric.Point[]} array of size 2n/4n of all suspected points + */ + projectStrokeOnPoints: function (points, options, openPath) { + var coords = [], s = options.strokeWidth / 2, + strokeUniformScalar = options.strokeUniform ? + new fabric.Point(1 / options.scaleX, 1 / options.scaleY) : new fabric.Point(1, 1), + getStrokeHatVector = function (v) { + var scalar = s / (Math.hypot(v.x, v.y)); + return new fabric.Point(v.x * scalar * strokeUniformScalar.x, v.y * scalar * strokeUniformScalar.y); + }; + if (points.length <= 1) {return coords;} + points.forEach(function (p, index) { + var A = new fabric.Point(p.x, p.y), B, C; + if (index === 0) { + C = points[index + 1]; + B = openPath ? getStrokeHatVector(fabric.util.createVector(C, A)).addEquals(A) : points[points.length - 1]; + } + else if (index === points.length - 1) { + B = points[index - 1]; + C = openPath ? getStrokeHatVector(fabric.util.createVector(B, A)).addEquals(A) : points[0]; + } + else { + B = points[index - 1]; + C = points[index + 1]; + } + var bisector = fabric.util.getBisector(A, B, C), + bisectorVector = bisector.vector, + alpha = bisector.angle, + scalar, + miterVector; + if (options.strokeLineJoin === 'miter') { + scalar = -s / Math.sin(alpha / 2); + miterVector = new fabric.Point( + bisectorVector.x * scalar * strokeUniformScalar.x, + bisectorVector.y * scalar * strokeUniformScalar.y + ); + if (Math.hypot(miterVector.x, miterVector.y) / s <= options.strokeMiterLimit) { + coords.push(A.add(miterVector)); + coords.push(A.subtract(miterVector)); + return; + } + } + scalar = -s * Math.SQRT2; + miterVector = new fabric.Point( + bisectorVector.x * scalar * strokeUniformScalar.x, + bisectorVector.y * scalar * strokeUniformScalar.y + ); + coords.push(A.add(miterVector)); + coords.push(A.subtract(miterVector)); + }); + return coords; + }, + /** * Apply transform t to point p * @static * @memberOf fabric.util - * @param {TMat2D} t The transform + * @param {fabric.Point} p The point to transform + * @param {Array} t The transform * @param {Boolean} [ignoreOffset] Indicates that the offset should not be applied - * @return {Point} The transformed point + * @return {fabric.Point} The transformed point + */ + transformPoint: function(p, t, ignoreOffset) { + if (ignoreOffset) { + return new fabric.Point( + t[0] * p.x + t[2] * p.y, + t[1] * p.x + t[3] * p.y + ); + } + return new fabric.Point( + t[0] * p.x + t[2] * p.y + t[4], + t[1] * p.x + t[3] * p.y + t[5] + ); + }, + + /** + * Returns coordinates of points's bounding rectangle (left, top, width, height) + * @param {Array} points 4 points array + * @param {Array} [transform] an array of 6 numbers representing a 2x3 transform matrix + * @return {Object} Object with left, top, width, height properties */ - transform(t, ignoreOffset = false) { - return new Point(t[0] * this.x + t[2] * this.y + (ignoreOffset ? 0 : t[4]), t[1] * this.x + t[3] * this.y + (ignoreOffset ? 0 : t[5])); - } -} -const originZero = new Point(0, 0); -fabric$1.Point = Point; + makeBoundingBoxFromPoints: function(points, transform) { + if (transform) { + for (var i = 0; i < points.length; i++) { + points[i] = fabric.util.transformPoint(points[i], transform); + } + } + var xPoints = [points[0].x, points[1].x, points[2].x, points[3].x], + minX = fabric.util.array.min(xPoints), + maxX = fabric.util.array.max(xPoints), + width = maxX - minX, + yPoints = [points[0].y, points[1].y, points[2].y, points[3].y], + minY = fabric.util.array.min(yPoints), + maxY = fabric.util.array.max(yPoints), + height = maxY - minY; -/** - * Rotates `vector` with `radians` - * @static - * @memberOf fabric.util - * @param {Point} vector The vector to rotate (x and y) - * @param {Number} radians The radians of the angle for the rotation - * @return {Point} The new rotated point - */ -const rotateVector = (vector, radians) => vector.rotate(radians); -/** - * Creates a vetor from points represented as a point - * @static - * @memberOf fabric.util - * - * @param {Point} from - * @param {Point} to - * @returns {Point} vector - */ -const createVector = (from, to) => new Point(to).subtract(from); -/** - * Calculates angle between 2 vectors using dot product - * @static - * @memberOf fabric.util - * @param {Point} a - * @param {Point} b - * @returns the angle in radian between the vectors - */ -const calcAngleBetweenVectors = (a, b) => Math.acos((a.x * b.x + a.y * b.y) / (Math.hypot(a.x, a.y) * Math.hypot(b.x, b.y))); -/** - * @static - * @memberOf fabric.util - * @param {Point} v - * @returns {Point} vector representing the unit vector of pointing to the direction of `v` - */ -const getHatVector = (v) => v.scalarMultiply(1 / Math.hypot(v.x, v.y)); -/** - * @static - * @memberOf fabric.util - * @param {Point} A - * @param {Point} B - * @param {Point} C - * @returns {{ vector: Point, angle: number }} vector representing the bisector of A and A's angle - */ -const getBisector = (a, b, c) => { - const ab = createVector(a, b), ac = createVector(a, c); - const alpha = calcAngleBetweenVectors(ab, ac); - // check if alpha is relative to AB->BC - const ro = calcAngleBetweenVectors(rotateVector(ab, alpha), ac); - const phi = ((alpha * (ro === 0 ? 1 : -1)) / 2); - return { - vector: getHatVector(rotateVector(ab, phi)), - angle: alpha, - }; -}; + return { + left: minX, + top: minY, + width: width, + height: height + }; + }, -/** - * Transforms degrees to radians. - * @static - * @memberOf fabric.util - * @param {TDegree} degrees value in degrees - * @return {TRadian} value in radians - */ -const degreesToRadians$1 = (degrees) => (degrees * PiBy180); -/** - * Transforms radians to degrees. - * @static - * @memberOf fabric.util - * @param {TRadian} radians value in radians - * @return {TDegree} value in degrees - */ -const radiansToDegrees = (radians) => (radians / PiBy180); + /** + * Invert transformation t + * @static + * @memberOf fabric.util + * @param {Array} t The transform + * @return {Array} The inverted transform + */ + invertTransform: function(t) { + var a = 1 / (t[0] * t[3] - t[1] * t[2]), + r = [a * t[3], -a * t[1], -a * t[2], a * t[0]], + o = fabric.util.transformPoint({ x: t[4], y: t[5] }, r, true); + r[4] = -o.x; + r[5] = -o.y; + return r; + }, -/** - * Rotates `point` around `origin` with `radians` - * @static - * @deprecated use the Point.rotate - * @memberOf fabric.util - * @param {Point} origin The origin of the rotation - * @param {Point} origin The origin of the rotation - * @param {TRadian} radians The radians of the angle for the rotation - * @return {Point} The new rotated point - */ -const rotatePoint = (point, origin, radians) => point.rotate(radians, origin); + /** + * A wrapper around Number#toFixed, which contrary to native method returns number, not string. + * @static + * @memberOf fabric.util + * @param {Number|String} number number to operate on + * @param {Number} fractionDigits number of fraction digits to "leave" + * @return {Number} + */ + toFixed: function(number, fractionDigits) { + return parseFloat(Number(number).toFixed(fractionDigits)); + }, -/** - * Returns random number between 2 specified ones. - * @static - * @memberOf fabric.util - * @param {Number} min lower limit - * @param {Number} max upper limit - * @return {Number} random value (between min and max) - */ -const getRandomInt = (min, max) => Math.floor(Math.random() * (max - min + 1)) + min; + /** + * Converts from attribute value to pixel value if applicable. + * Returns converted pixels or original value not converted. + * @param {Number|String} value number to operate on + * @param {Number} fontSize + * @return {Number|String} + */ + parseUnit: function(value, fontSize) { + var unit = /\D{0,2}$/.exec(value), + number = parseFloat(value); + if (!fontSize) { + fontSize = fabric.Text.DEFAULT_SVG_FONT_SIZE; + } + switch (unit[0]) { + case 'mm': + return number * fabric.DPI / 25.4; -/** - * - * @param value value to check if NaN - * @param [valueIfNaN] - * @returns `fallback` is `value is NaN - */ -const ifNaN = (value, valueIfNaN) => { - return isNaN(value) && typeof valueIfNaN === 'number' ? valueIfNaN : value; -}; + case 'cm': + return number * fabric.DPI / 2.54; -/** - * Removes value from an array. - * Presence of value (and its position in an array) is determined via `Array.prototype.indexOf` - * @static - * @memberOf fabric.util - * @param {Array} array - * @param {*} value - * @return {Array} original array - */ -const removeFromArray = (array, value) => { - const idx = array.indexOf(value); - if (idx !== -1) { - array.splice(idx, 1); - } - return array; -}; + case 'in': + return number * fabric.DPI; -const projectStrokeOnPoints = (points, { strokeWidth, strokeLineJoin, strokeMiterLimit, // https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit -strokeUniform, scaleX, scaleY, }, openPath) => { - const coords = [], s = strokeWidth / 2, strokeUniformScalar = strokeUniform - ? new Point(1 / scaleX, 1 / scaleY) - : new Point(1, 1), getStrokeHatVector = (v) => { - const scalar = s / Math.hypot(v.x, v.y); - return new Point(v.x * scalar * strokeUniformScalar.x, v.y * scalar * strokeUniformScalar.y); - }; - if (points.length <= 1) { - return coords; - } - points.forEach(function (p, index) { - const A = new Point(p.x, p.y); - let B, C; - if (index === 0) { - C = points[index + 1]; - B = openPath - ? getStrokeHatVector(createVector(C, A)).add(A) - : points[points.length - 1]; - } - else if (index === points.length - 1) { - B = points[index - 1]; - C = openPath ? getStrokeHatVector(createVector(B, A)).add(A) : points[0]; - } - else { - B = points[index - 1]; - C = points[index + 1]; - } - const bisector = getBisector(A, B, C), bisectorVector = bisector.vector, alpha = bisector.angle; - let scalar, miterVector; - if (strokeLineJoin === "miter" /* StrokeLineJoin.miter */) { - scalar = -s / Math.sin(alpha / 2); - miterVector = new Point(bisectorVector.x * scalar * strokeUniformScalar.x, bisectorVector.y * scalar * strokeUniformScalar.y); - if (Math.hypot(miterVector.x, miterVector.y) / s <= strokeMiterLimit) { - coords.push(A.add(miterVector)); - coords.push(A.subtract(miterVector)); - return; - } - } - scalar = -s * Math.SQRT2; - miterVector = new Point(bisectorVector.x * scalar * strokeUniformScalar.x, bisectorVector.y * scalar * strokeUniformScalar.y); - coords.push(A.add(miterVector)); - coords.push(A.subtract(miterVector)); - }); - return coords; -}; + case 'pt': + return number * fabric.DPI / 72; // or * 4 / 3 -/*! ***************************************************************************** -Copyright (c) Microsoft Corporation. - -Permission to use, copy, modify, and/or distribute this software for any -purpose with or without fee is hereby granted. - -THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH -REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY -AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, -INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM -LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR -OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR -PERFORMANCE OF THIS SOFTWARE. -***************************************************************************** */ -function __rest(s, e) { - var t = {}; - for (var p in s) - if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) - t[p] = s[p]; - if (s != null && typeof Object.getOwnPropertySymbols === "function") - for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) { - if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) - t[p[i]] = s[p[i]]; - } - return t; -} + case 'pc': + return number * fabric.DPI / 72 * 12; // or * 16 -/** - * Apply transform t to point p - * @static - * @memberOf fabric.util - * @param {Point | IPoint} p The point to transform - * @param {Array} t The transform - * @param {Boolean} [ignoreOffset] Indicates that the offset should not be applied - * @return {Point} The transformed point - */ -const transformPoint = (p, t, ignoreOffset) => new Point(p).transform(t, ignoreOffset); -/** - * Invert transformation t - * @static - * @memberOf fabric.util - * @param {Array} t The transform - * @return {Array} The inverted transform - */ -const invertTransform = (t) => { - const a = 1 / (t[0] * t[3] - t[1] * t[2]), r = [a * t[3], -a * t[1], -a * t[2], a * t[0], 0, 0], { x, y } = transformPoint(new Point(t[4], t[5]), r, true); - r[4] = -x; - r[5] = -y; - return r; -}; -/** - * Multiply matrix A by matrix B to nest transformations - * @static - * @memberOf fabric.util - * @param {TMat2D} a First transformMatrix - * @param {TMat2D} b Second transformMatrix - * @param {Boolean} is2x2 flag to multiply matrices as 2x2 matrices - * @return {TMat2D} The product of the two transform matrices - */ -const multiplyTransformMatrices = (a, b, is2x2) => [ - a[0] * b[0] + a[2] * b[1], - a[1] * b[0] + a[3] * b[1], - a[0] * b[2] + a[2] * b[3], - a[1] * b[2] + a[3] * b[3], - is2x2 ? 0 : a[0] * b[4] + a[2] * b[5] + a[4], - is2x2 ? 0 : a[1] * b[4] + a[3] * b[5] + a[5], -]; -/** - * Decomposes standard 2x3 matrix into transform components - * @static - * @memberOf fabric.util - * @param {TMat2D} a transformMatrix - * @return {Object} Components of transform - */ -const qrDecompose = (a) => { - const angle = Math.atan2(a[1], a[0]), denom = Math.pow(a[0], 2) + Math.pow(a[1], 2), scaleX = Math.sqrt(denom), scaleY = (a[0] * a[3] - a[2] * a[1]) / scaleX, skewX = Math.atan2(a[0] * a[2] + a[1] * a[3], denom); - return { - angle: (angle / PiBy180), - scaleX, - scaleY, - skewX: (skewX / PiBy180), - skewY: 0, - translateX: a[4], - translateY: a[5], - }; -}; -/** - * Returns a transform matrix starting from an object of the same kind of - * the one returned from qrDecompose, useful also if you want to calculate some - * transformations from an object that is not enlived yet - * @static - * @memberOf fabric.util - * @param {Object} options - * @param {Number} [options.angle] angle in degrees - * @return {TMat2D} transform matrix - */ -const calcRotateMatrix = ({ angle }) => { - if (!angle) { - return iMatrix; - } - const theta = degreesToRadians$1(angle), cosin = cos(theta), sinus = sin(theta); - return [cosin, sinus, -sinus, cosin, 0, 0]; -}; -/** - * Returns a transform matrix starting from an object of the same kind of - * the one returned from qrDecompose, useful also if you want to calculate some - * transformations from an object that is not enlived yet. - * is called DimensionsTransformMatrix because those properties are the one that influence - * the size of the resulting box of the object. - * @static - * @memberOf fabric.util - * @param {Object} options - * @param {Number} [options.scaleX] - * @param {Number} [options.scaleY] - * @param {Boolean} [options.flipX] - * @param {Boolean} [options.flipY] - * @param {Number} [options.skewX] - * @param {Number} [options.skewY] - * @return {Number[]} transform matrix - */ -const calcDimensionsMatrix = ({ scaleX = 1, scaleY = 1, flipX = false, flipY = false, skewX = 0, skewY = 0, }) => { - let scaleMatrix = iMatrix; - if (scaleX !== 1 || scaleY !== 1 || flipX || flipY) { - scaleMatrix = [ - flipX ? -scaleX : scaleX, - 0, - 0, - flipY ? -scaleY : scaleY, - 0, - 0, - ]; - } - if (skewX) { - scaleMatrix = multiplyTransformMatrices(scaleMatrix, [1, 0, Math.tan(degreesToRadians$1(skewX)), 1], true); - } - if (skewY) { - scaleMatrix = multiplyTransformMatrices(scaleMatrix, [1, Math.tan(degreesToRadians$1(skewY)), 0, 1], true); - } - return scaleMatrix; -}; -/** - * Returns a transform matrix starting from an object of the same kind of - * the one returned from qrDecompose, useful also if you want to calculate some - * transformations from an object that is not enlived yet - * @static - * @memberOf fabric.util - * @param {Object} options - * @param {Number} [options.angle] - * @param {Number} [options.scaleX] - * @param {Number} [options.scaleY] - * @param {Boolean} [options.flipX] - * @param {Boolean} [options.flipY] - * @param {Number} [options.skewX] - * @param {Number} [options.skewY] - * @param {Number} [options.translateX] - * @param {Number} [options.translateY] - * @return {Number[]} transform matrix - */ -const composeMatrix = (_a) => { - var { translateX = 0, translateY = 0, angle = 0 } = _a, otherOptions = __rest(_a, ["translateX", "translateY", "angle"]); - let matrix = [1, 0, 0, 1, translateX, translateY]; - if (angle) { - matrix = multiplyTransformMatrices(matrix, calcRotateMatrix({ angle })); - } - const scaleMatrix = calcDimensionsMatrix(otherOptions); - if (scaleMatrix !== iMatrix) { - matrix = multiplyTransformMatrices(matrix, scaleMatrix); - } - return matrix; -}; - -//@ts-nocheck -/** - * Copies all enumerable properties of one js object to another - * this does not and cannot compete with generic utils. - * Does not clone or extend fabric.Object subclasses. - * This is mostly for internal use and has extra handling for fabricJS objects - * it skips the canvas and group properties in deep cloning. - * @memberOf fabric.util.object - * @param {Object} destination Where to copy to - * @param {Object} source Where to copy from - * @param {Boolean} [deep] Whether to extend nested objects - * @return {Object} - */ -const extend = (destination, source, deep) => { - // the deep clone is for internal use, is not meant to avoid - // javascript traps or cloning html element or self referenced objects. - if (deep) { - if (!fabric$1.isLikelyNode && source instanceof Element) { - // avoid cloning deep images, canvases, - destination = source; - } - else if (Array.isArray(source)) { - destination = []; - for (let i = 0, len = source.length; i < len; i++) { - destination[i] = extend({}, source[i], deep); - } - } - else if (source && typeof source === 'object') { - for (const property in source) { - if (property === 'canvas' || property === 'group') { - // we do not want to clone this props at all. - // we want to keep the keys in the copy - destination[property] = null; - } - else if (Object.prototype.hasOwnProperty.call(source, property)) { - destination[property] = extend({}, source[property], deep); - } - } - } - else { - // this sounds odd for an extend but is ok for recursive use - destination = source; - } - } - else { - for (const property in source) { - destination[property] = source[property]; - } - } - return destination; -}; -/** - * Creates an empty object and copies all enumerable properties of another object to it - * This method is mostly for internal use, and not intended for duplicating shapes in canvas. - * @memberOf fabric.util.object - * @param {Object} object Object to clone - * @param {Boolean} [deep] Whether to clone nested objects - * @return {Object} - */ -//TODO: this function return an empty object if you try to clone null -const clone = (object, deep) => deep ? extend({}, object, deep) : Object.assign({}, object); + case 'em': + return number * fontSize; -/** - * @memberOf fabric.util - * @param {Object} prevStyle first style to compare - * @param {Object} thisStyle second style to compare - * @param {boolean} forTextSpans whether to check overline, underline, and line-through properties - * @return {boolean} true if the style changed - */ -const hasStyleChanged = (prevStyle, thisStyle, forTextSpans = false) => prevStyle.fill !== thisStyle.fill || - prevStyle.stroke !== thisStyle.stroke || - prevStyle.strokeWidth !== thisStyle.strokeWidth || - prevStyle.fontSize !== thisStyle.fontSize || - prevStyle.fontFamily !== thisStyle.fontFamily || - prevStyle.fontWeight !== thisStyle.fontWeight || - prevStyle.fontStyle !== thisStyle.fontStyle || - prevStyle.textBackgroundColor !== thisStyle.textBackgroundColor || - prevStyle.deltaY !== thisStyle.deltaY || - (forTextSpans && - (prevStyle.overline !== thisStyle.overline || - prevStyle.underline !== thisStyle.underline || - prevStyle.linethrough !== thisStyle.linethrough)); -/** - * Returns the array form of a text object's inline styles property with styles grouped in ranges - * rather than per character. This format is less verbose, and is better suited for storage - * so it is used in serialization (not during runtime). - * @memberOf fabric.util - * @param {object} styles per character styles for a text object - * @param {String} text the text string that the styles are applied to - * @return {{start: number, end: number, style: object}[]} - */ -const stylesToArray = (styles, text) => { - const textLines = text.split('\n'), stylesArray = []; - let charIndex = -1, prevStyle = {}; - // clone style structure to prevent mutation - styles = clone(styles, true); - //loop through each textLine - for (let i = 0; i < textLines.length; i++) { - if (!styles[i]) { - //no styles exist for this line, so add the line's length to the charIndex total - charIndex += textLines[i].length; - continue; - } - //loop through each character of the current line - for (let c = 0; c < textLines[i].length; c++) { - charIndex++; - const thisStyle = styles[i][c]; - //check if style exists for this character - if (thisStyle && Object.keys(thisStyle).length > 0) { - if (hasStyleChanged(prevStyle, thisStyle, true)) { - stylesArray.push({ - start: charIndex, - end: charIndex + 1, - style: thisStyle, - }); - } - else { - //if style is the same as previous character, increase end index - stylesArray[stylesArray.length - 1].end++; - } - } - prevStyle = thisStyle || {}; - } - } - return stylesArray; -}; -/** - * Returns the object form of the styles property with styles that are assigned per - * character rather than grouped by range. This format is more verbose, and is - * only used during runtime (not for serialization/storage) - * @memberOf fabric.util - * @param {Array} styles the serialized form of a text object's styles - * @param {String} text the text string that the styles are applied to - * @return {Object} - */ -const stylesFromArray = (styles, text) => { - if (!Array.isArray(styles)) { - return styles; - } - const textLines = text.split('\n'), stylesObject = {}; - let charIndex = -1, styleIndex = 0; - //loop through each textLine - for (let i = 0; i < textLines.length; i++) { - //loop through each character of the current line - for (let c = 0; c < textLines[i].length; c++) { - charIndex++; - //check if there's a style collection that includes the current character - if (styles[styleIndex] && - styles[styleIndex].start <= charIndex && - charIndex < styles[styleIndex].end) { - //create object for line index if it doesn't exist - stylesObject[i] = stylesObject[i] || {}; - //assign a style at this character's index - stylesObject[i][c] = Object.assign({}, styles[styleIndex].style); - //if character is at the end of the current style collection, move to the next - if (charIndex === styles[styleIndex].end - 1) { - styleIndex++; - } - } - } - } - return stylesObject; -}; + default: + return number; + } + }, -/** - * Creates canvas element - * @static - * @memberOf fabric.util - * @return {CanvasElement} initialized canvas element - */ -const createCanvasElement = () => fabric$1.document.createElement('canvas'); -/** - * Creates image element (works on client and node) - * @static - * @memberOf fabric.util - * @return {HTMLImageElement} HTML image element - */ -const createImage = () => fabric$1.document.createElement('img'); -/** - * Creates a canvas element that is a copy of another and is also painted - * @param {CanvasElement} canvas to copy size and content of - * @static - * @memberOf fabric.util - * @return {CanvasElement} initialized canvas element - */ -const copyCanvasElement = (canvas) => { - var _a; - const newCanvas = createCanvasElement(); - newCanvas.width = canvas.width; - newCanvas.height = canvas.height; - (_a = newCanvas.getContext('2d')) === null || _a === void 0 ? void 0 : _a.drawImage(canvas, 0, 0); - return newCanvas; -}; -/** - * since 2.6.0 moved from canvas instance to utility. - * possibly useless - * @param {CanvasElement} canvasEl to copy size and content of - * @param {String} format 'jpeg' or 'png', in some browsers 'webp' is ok too - * @param {Number} quality <= 1 and > 0 - * @static - * @memberOf fabric.util - * @return {String} data url - */ -const toDataURL = (canvasEl, format, quality) => canvasEl.toDataURL(`image/${format}`, quality); + /** + * Function which always returns `false`. + * @static + * @memberOf fabric.util + * @return {Boolean} + */ + falseFunction: function() { + return false; + }, -/** - * A wrapper around Number#toFixed, which contrary to native method returns number, not string. - * @static - * @memberOf fabric.util - * @param {number|string} number number to operate on - * @param {number} fractionDigits number of fraction digits to "leave" - * @return {number} - */ -const toFixed = (number, fractionDigits) => parseFloat(Number(number).toFixed(fractionDigits)); + /** + * Returns klass "Class" object of given namespace + * @memberOf fabric.util + * @param {String} type Type of object (eg. 'circle') + * @param {String} namespace Namespace to get klass "Class" object from + * @return {Object} klass "Class" + */ + getKlass: function(type, namespace) { + // capitalize first letter only + type = fabric.util.string.camelize(type.charAt(0).toUpperCase() + type.slice(1)); + return fabric.util.resolveNamespace(namespace)[type]; + }, -/** - * Returns array of attributes for given svg that fabric parses - * @memberOf fabric.util - * @param {SVGElementName} type Type of svg element (eg. 'circle') - * @return {Array} string names of supported attributes - */ -const getSvgAttributes = (type) => { - const commonAttributes = ['instantiated_by_use', 'style', 'id', 'class']; - switch (type) { - case "linearGradient" /* SVGElementName.linearGradient */: - return commonAttributes.concat([ - 'x1', - 'y1', - 'x2', - 'y2', - 'gradientUnits', - 'gradientTransform', - ]); + /** + * Returns array of attributes for given svg that fabric parses + * @memberOf fabric.util + * @param {String} type Type of svg element (eg. 'circle') + * @return {Array} string names of supported attributes + */ + getSvgAttributes: function(type) { + var attributes = [ + 'instantiated_by_use', + 'style', + 'id', + 'class' + ]; + switch (type) { + case 'linearGradient': + attributes = attributes.concat(['x1', 'y1', 'x2', 'y2', 'gradientUnits', 'gradientTransform']); + break; case 'radialGradient': - return commonAttributes.concat([ - 'gradientUnits', - 'gradientTransform', - 'cx', - 'cy', - 'r', - 'fx', - 'fy', - 'fr', - ]); + attributes = attributes.concat(['gradientUnits', 'gradientTransform', 'cx', 'cy', 'r', 'fx', 'fy', 'fr']); + break; case 'stop': - return commonAttributes.concat(['offset', 'stop-color', 'stop-opacity']); - } - return commonAttributes; -}; -/** - * Converts from attribute value to pixel value if applicable. - * Returns converted pixels or original value not converted. - * @param {string} value number to operate on - * @param {number} fontSize - * @return {number} - */ -const parseUnit = (value, fontSize) => { - const unit = /\D{0,2}$/.exec(value), number = parseFloat(value); - if (!fontSize) { - fontSize = DEFAULT_SVG_FONT_SIZE; - } - const dpi = config.DPI; - switch (unit === null || unit === void 0 ? void 0 : unit[0]) { - case "mm" /* SupportedSVGUnit.mm */: - return (number * dpi) / 25.4; - case "cm" /* SupportedSVGUnit.cm */: - return (number * dpi) / 2.54; - case "in" /* SupportedSVGUnit.in */: - return number * dpi; - case "pt" /* SupportedSVGUnit.pt */: - return (number * dpi) / 72; // or * 4 / 3 - case "pc" /* SupportedSVGUnit.pc */: - return ((number * dpi) / 72) * 12; // or * 16 - case "em" /* SupportedSVGUnit.em */: - return number * fontSize; - default: - return number; - } -}; -/** - * Groups SVG elements (usually those retrieved from SVG document) - * @static - * @memberOf fabric.util - * @param {Array} elements fabric.Object(s) parsed from svg, to group - * @return {fabric.Object|fabric.Group} - */ -const groupSVGElements = (elements) => { - if (elements && elements.length === 1) { - return elements[0]; - } - return new fabric$1.Group(elements); -}; -// align can be either none or undefined or a combination of mid/max -const parseAlign = (align) => { - //divide align in alignX and alignY - if (align && align !== "none" /* MinMidMax.none */) { - return [align.slice(1, 4), align.slice(5, 8)]; - } - else if (align === "none" /* MinMidMax.none */) { - return [align, align]; - } - return ["Mid" /* MinMidMax.mid */, "Mid" /* MinMidMax.mid */]; -}; -/** - * Parse preserveAspectRatio attribute from element - * https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/preserveAspectRatio - * @param {string} attribute to be parsed - * @return {Object} an object containing align and meetOrSlice attribute - */ -const parsePreserveAspectRatioAttribute = (attribute) => { - const [firstPart, secondPart] = attribute.trim().split(' '); - const [alignX, alignY] = parseAlign(firstPart); - return { - meetOrSlice: secondPart || "meet" /* MeetOrSlice.meet */, - alignX, - alignY, - }; -}; -/** - * given an array of 6 number returns something like `"matrix(...numbers)"` - * @memberOf fabric.util - * @param {TMat2D} transform an array with 6 numbers - * @return {String} transform matrix for svg - */ -const matrixToSVG = (transform) => 'matrix(' + - transform - .map((value) => toFixed(value, config.NUM_FRACTION_DIGITS)) - .join(' ') + - ')'; + attributes = attributes.concat(['offset', 'stop-color', 'stop-opacity']); + break; + } + return attributes; + }, -/** - * Finds the scale for the object source to fit inside the object destination, - * keeping aspect ratio intact. - * respect the total allowed area for the cache. - * @memberOf fabric.util - * @param {Object | fabric.Object} source - * @param {Number} source.height natural unscaled height of the object - * @param {Number} source.width natural unscaled width of the object - * @param {Object | fabric.Object} destination - * @param {Number} destination.height natural unscaled height of the object - * @param {Number} destination.width natural unscaled width of the object - * @return {Number} scale factor to apply to source to fit into destination - */ -const findScaleToFit = (source, destination) => Math.min(destination.width / source.width, destination.height / source.height); -/** - * Finds the scale for the object source to cover entirely the object destination, - * keeping aspect ratio intact. - * respect the total allowed area for the cache. - * @memberOf fabric.util - * @param {Object | fabric.Object} source - * @param {Number} source.height natural unscaled height of the object - * @param {Number} source.width natural unscaled width of the object - * @param {Object | fabric.Object} destination - * @param {Number} destination.height natural unscaled height of the object - * @param {Number} destination.width natural unscaled width of the object - * @return {Number} scale factor to apply to source to cover destination - */ -const findScaleToCover = (source, destination) => Math.max(destination.width / source.width, destination.height / source.height); + /** + * Returns object of given namespace + * @memberOf fabric.util + * @param {String} namespace Namespace string e.g. 'fabric.Image.filter' or 'fabric' + * @return {Object} Object for given namespace (default fabric) + */ + resolveNamespace: function(namespace) { + if (!namespace) { + return fabric; + } -const capValue = (min, value, max) => Math.max(min, Math.min(value, max)); + var parts = namespace.split('.'), + len = parts.length, i, + obj = global || fabric.window; -/** - * Calculates bounding box (left, top, width, height) from given `points` - * @static - * @memberOf fabric.util - * @param {Point[]} points - * @return {Object} Object with left, top, width, height properties - */ -const makeBoundingBoxFromPoints = (points) => { - const { min, max } = points.reduce(({ min, max }, curr) => { - return { - min: min.min(curr), - max: max.max(curr), - }; - }, { min: points[0], max: points[0] }); - const size = max.subtract(min); - return { - left: min.x, - top: min.y, - width: size.x, - height: size.y, - }; -}; + for (i = 0; i < len; ++i) { + obj = obj[parts[i]]; + } -/** - * given an object and a transform, apply the inverse transform to the object, - * this is equivalent to remove from that object that transformation, so that - * added in a space with the removed transform, the object will be the same as before. - * Removing from an object a transform that scale by 2 is like scaling it by 1/2. - * Removing from an object a transform that rotate by 30deg is like rotating by 30deg - * in the opposite direction. - * This util is used to add objects inside transformed groups or nested groups. - * @memberOf fabric.util - * @param {fabric.Object} object the object you want to transform - * @param {Array} transform the destination transform - */ -const removeTransformFromObject = (object, transform) => { - const inverted = invertTransform(transform), finalTransform = multiplyTransformMatrices(inverted, object.calcOwnMatrix()); - applyTransformToObject(object, finalTransform); -}; -/** - * given an object and a transform, apply the transform to the object. - * this is equivalent to change the space where the object is drawn. - * Adding to an object a transform that scale by 2 is like scaling it by 2. - * This is used when removing an object from an active selection for example. - * @memberOf fabric.util - * @param {fabric.Object} object the object you want to transform - * @param {Array} transform the destination transform - */ -const addTransformToObject = (object, transform) => applyTransformToObject(object, multiplyTransformMatrices(transform, object.calcOwnMatrix())); -/** - * discard an object transform state and apply the one from the matrix. - * @memberOf fabric.util - * @param {fabric.Object} object the object you want to transform - * @param {Array} transform the destination transform - */ -const applyTransformToObject = (object, transform) => { - const _a = qrDecompose(transform), { translateX, translateY, scaleX, scaleY } = _a, otherOptions = __rest(_a, ["translateX", "translateY", "scaleX", "scaleY"]), center = new Point(translateX, translateY); - object.flipX = false; - object.flipY = false; - Object.assign(object, otherOptions); - object.set({ scaleX, scaleY }); - object.setPositionByOrigin(center, 'center', 'center'); -}; -/** - * reset an object transform state to neutral. Top and left are not accounted for - * @static - * @memberOf fabric.util - * @param {fabric.Object} target object to transform - */ -const resetObjectTransform = (target) => { - target.scaleX = 1; - target.scaleY = 1; - target.skewX = 0; - target.skewY = 0; - target.flipX = false; - target.flipY = false; - target.rotate(0); -}; -/** - * Extract Object transform values - * @static - * @memberOf fabric.util - * @param {fabric.Object} target object to read from - * @return {Object} Components of transform - */ -const saveObjectTransform = (target) => ({ - scaleX: target.scaleX, - scaleY: target.scaleY, - skewX: target.skewX, - skewY: target.skewY, - angle: target.angle, - left: target.left, - flipX: target.flipX, - flipY: target.flipY, - top: target.top, -}); -/** - * given a width and height, return the size of the bounding box - * that can contains the box with width/height with applied transform - * described in options. - * Use to calculate the boxes around objects for controls. - * @memberOf fabric.util - * @param {Number} width - * @param {Number} height - * @param {Object} options - * @param {Number} options.scaleX - * @param {Number} options.scaleY - * @param {Number} options.skewX - * @param {Number} options.skewY - * @returns {Point} size - */ -const sizeAfterTransform = (width, height, options) => { - const dimX = width / 2, dimY = height / 2, transformMatrix = calcDimensionsMatrix(options), points = [ - new Point(-dimX, -dimY), - new Point(dimX, -dimY), - new Point(-dimX, dimY), - new Point(dimX, dimY), - ].map((p) => p.transform(transformMatrix)), bbox = makeBoundingBoxFromPoints(points); - return new Point(bbox.width, bbox.height); -}; + return obj; + }, -/** - * We are actually looking for the transformation from the destination plane to the source plane (change of basis matrix)\ - * The object will exist on the destination plane and we want it to seem unchanged by it so we invert the destination matrix (`to`) and then apply the source matrix (`from`) - * @param [from] - * @param [to] - * @returns - */ -const calcPlaneChangeMatrix = (from = iMatrix, to = iMatrix) => multiplyTransformMatrices(invertTransform(to), from); -/** - * Sends a point from the source coordinate plane to the destination coordinate plane.\ - * From the canvas/viewer's perspective the point remains unchanged. - * - * @example Send point from canvas plane to group plane - * var obj = new fabric.Rect({ left: 20, top: 20, width: 60, height: 60, strokeWidth: 0 }); - * var group = new fabric.Group([obj], { strokeWidth: 0 }); - * var sentPoint1 = fabric.util.sendPointToPlane(new Point(50, 50), undefined, group.calcTransformMatrix()); - * var sentPoint2 = fabric.util.sendPointToPlane(new Point(50, 50), fabric.iMatrix, group.calcTransformMatrix()); - * console.log(sentPoint1, sentPoint2) // both points print (0,0) which is the center of group - * - * @static - * @memberOf fabric.util - * @see {fabric.util.transformPointRelativeToCanvas} for transforming relative to canvas - * @param {Point} point - * @param {TMat2D} [from] plane matrix containing object. Passing `undefined` is equivalent to passing the identity matrix, which means `point` exists in the canvas coordinate plane. - * @param {TMat2D} [to] destination plane matrix to contain object. Passing `undefined` means `point` should be sent to the canvas coordinate plane. - * @returns {Point} transformed point - */ -const sendPointToPlane = (point, from = iMatrix, to = iMatrix) => -// we are actually looking for the transformation from the destination plane to the source plane (which is a linear mapping) -// the object will exist on the destination plane and we want it to seem unchanged by it so we reverse the destination matrix (to) and then apply the source matrix (from) -point.transform(calcPlaneChangeMatrix(from, to)); -/** - * Transform point relative to canvas. - * From the viewport/viewer's perspective the point remains unchanged. - * - * `child` relation means `point` exists in the coordinate plane created by `canvas`. - * In other words point is measured acoording to canvas' top left corner - * meaning that if `point` is equal to (0,0) it is positioned at canvas' top left corner. - * - * `sibling` relation means `point` exists in the same coordinate plane as canvas. - * In other words they both relate to the same (0,0) and agree on every point, which is how an event relates to canvas. - * - * @static - * @memberOf fabric.util - * @param {Point} point - * @param {fabric.StaticCanvas} canvas - * @param {'sibling'|'child'} relationBefore current relation of point to canvas - * @param {'sibling'|'child'} relationAfter desired relation of point to canvas - * @returns {Point} transformed point - */ -const transformPointRelativeToCanvas = (point, canvas, relationBefore, relationAfter) => { - // is this still needed with TS? - if (relationBefore !== "child" /* ObjectRelation.child */ && - relationBefore !== "sibling" /* ObjectRelation.sibling */) { - throw new Error('fabric.js: received bad argument ' + relationBefore); - } - if (relationAfter !== "child" /* ObjectRelation.child */ && - relationAfter !== "sibling" /* ObjectRelation.sibling */) { - throw new Error('fabric.js: received bad argument ' + relationAfter); - } - if (relationBefore === relationAfter) { - return point; - } - const t = canvas.viewportTransform; - return point.transform(relationAfter === 'child' ? invertTransform(t) : t); -}; -/** - * - * A util that abstracts applying transform to objects.\ - * Sends `object` to the destination coordinate plane by applying the relevant transformations.\ - * Changes the space/plane where `object` is drawn.\ - * From the canvas/viewer's perspective `object` remains unchanged. - * - * @example Move clip path from one object to another while preserving it's appearance as viewed by canvas/viewer - * let obj, obj2; - * let clipPath = new fabric.Circle({ radius: 50 }); - * obj.clipPath = clipPath; - * // render - * fabric.util.sendObjectToPlane(clipPath, obj.calcTransformMatrix(), obj2.calcTransformMatrix()); - * obj.clipPath = undefined; - * obj2.clipPath = clipPath; - * // render, clipPath now clips obj2 but seems unchanged from the eyes of the viewer - * - * @example Clip an object's clip path with an existing object - * let obj, existingObj; - * let clipPath = new fabric.Circle({ radius: 50 }); - * obj.clipPath = clipPath; - * let transformTo = fabric.util.multiplyTransformMatrices(obj.calcTransformMatrix(), clipPath.calcTransformMatrix()); - * fabric.util.sendObjectToPlane(existingObj, existingObj.group?.calcTransformMatrix(), transformTo); - * clipPath.clipPath = existingObj; - * - * @static - * @memberof fabric.util - * @param {fabric.Object} object - * @param {Matrix} [from] plane matrix containing object. Passing `undefined` is equivalent to passing the identity matrix, which means `object` is a direct child of canvas. - * @param {Matrix} [to] destination plane matrix to contain object. Passing `undefined` means `object` should be sent to the canvas coordinate plane. - * @returns {Matrix} the transform matrix that was applied to `object` - */ -const sendObjectToPlane = (object, from, to) => { - const t = calcPlaneChangeMatrix(from, to); - applyTransformToObject(object, multiplyTransformMatrices(t, object.calcOwnMatrix())); - return t; -}; + /** + * Loads image element from given url and passes it to a callback + * @memberOf fabric.util + * @param {String} url URL representing an image + * @param {Function} callback Callback; invoked with loaded image + * @param {*} [context] Context to invoke callback in + * @param {Object} [crossOrigin] crossOrigin value to set image element to + */ + loadImage: function(url, callback, context, crossOrigin) { + if (!url) { + callback && callback.call(context, url); + return; + } -/** - * Camelizes a string - * @memberOf fabric.util.string - * @param {String} string String to camelize - * @return {String} Camelized version of a string - */ -const camelize = (string) => string.replace(/-+(.)?/g, function (match, character) { - return character ? character.toUpperCase() : ''; -}); -/** - * Capitalizes a string - * @memberOf fabric.util.string - * @param {String} string String to capitalize - * @param {Boolean} [firstLetterOnly] If true only first letter is capitalized - * and other letters stay untouched, if false first letter is capitalized - * and other letters are converted to lowercase. - * @return {String} Capitalized version of a string - */ -const capitalize = (string, firstLetterOnly = false) => `${string.charAt(0).toUpperCase()}${firstLetterOnly ? string.slice(1) : string.slice(1).toLowerCase()}`; -/** - * Escapes XML in a string - * @memberOf fabric.util.string - * @param {String} string String to escape - * @return {String} Escaped version of a string - */ -const escapeXml = (string) => string - .replace(/&/g, '&') - .replace(/"/g, '"') - .replace(/'/g, ''') - .replace(//g, '>'); -/** - * Divide a string in the user perceived single units - * @memberOf fabric.util.string - * @param {String} textstring String to escape - * @return {Array} array containing the graphemes - */ -const graphemeSplit = (textstring) => { - const graphemes = []; - for (let i = 0, chr; i < textstring.length; i++) { - if ((chr = getWholeChar(textstring, i)) === false) { - continue; - } - graphemes.push(chr); - } - return graphemes; -}; -// taken from mdn in the charAt doc page. -const getWholeChar = (str, i) => { - const code = str.charCodeAt(i); - if (isNaN(code)) { - return ''; // Position not found - } - if (code < 0xd800 || code > 0xdfff) { - return str.charAt(i); - } - // High surrogate (could change last hex to 0xDB7F to treat high private - // surrogates as single characters) - if (0xd800 <= code && code <= 0xdbff) { - if (str.length <= i + 1) { - throw 'High surrogate without following low surrogate'; - } - const next = str.charCodeAt(i + 1); - if (0xdc00 > next || next > 0xdfff) { - throw 'High surrogate without following low surrogate'; + var img = fabric.util.createImage(); + + /** @ignore */ + var onLoadCallback = function () { + callback && callback.call(context, img, false); + img = img.onload = img.onerror = null; + }; + + img.onload = onLoadCallback; + /** @ignore */ + img.onerror = function() { + fabric.log('Error loading ' + img.src); + callback && callback.call(context, null, true); + img = img.onload = img.onerror = null; + }; + + // data-urls appear to be buggy with crossOrigin + // https://github.com/kangax/fabric.js/commit/d0abb90f1cd5c5ef9d2a94d3fb21a22330da3e0a#commitcomment-4513767 + // see https://code.google.com/p/chromium/issues/detail?id=315152 + // https://bugzilla.mozilla.org/show_bug.cgi?id=935069 + // crossOrigin null is the same as not set. + if (url.indexOf('data') !== 0 && + crossOrigin !== undefined && + crossOrigin !== null) { + img.crossOrigin = crossOrigin; + } + + // IE10 / IE11-Fix: SVG contents from data: URI + // will only be available if the IMG is present + // in the DOM (and visible) + if (url.substring(0,14) === 'data:image/svg') { + img.onload = null; + fabric.util.loadImageInDom(img, onLoadCallback); + } + + img.src = url; + }, + + /** + * Attaches SVG image with data: URL to the dom + * @memberOf fabric.util + * @param {Object} img Image object with data:image/svg src + * @param {Function} callback Callback; invoked with loaded image + * @return {Object} DOM element (div containing the SVG image) + */ + loadImageInDom: function(img, onLoadCallback) { + var div = fabric.document.createElement('div'); + div.style.width = div.style.height = '1px'; + div.style.left = div.style.top = '-100%'; + div.style.position = 'absolute'; + div.appendChild(img); + fabric.document.querySelector('body').appendChild(div); + /** + * Wrap in function to: + * 1. Call existing callback + * 2. Cleanup DOM + */ + img.onload = function () { + onLoadCallback(); + div.parentNode.removeChild(div); + div = null; + }; + }, + + /** + * Creates corresponding fabric instances from their object representations + * @static + * @memberOf fabric.util + * @param {Array} objects Objects to enliven + * @param {Function} callback Callback to invoke when all objects are created + * @param {String} namespace Namespace to get klass "Class" object from + * @param {Function} reviver Method for further parsing of object elements, + * called after each fabric object created. + */ + enlivenObjects: function(objects, callback, namespace, reviver) { + objects = objects || []; + + var enlivenedObjects = [], + numLoadedObjects = 0, + numTotalObjects = objects.length; + + function onLoaded() { + if (++numLoadedObjects === numTotalObjects) { + callback && callback(enlivenedObjects.filter(function(obj) { + // filter out undefined objects (objects that gave error) + return obj; + })); } - return str.charAt(i) + str.charAt(i + 1); - } - // Low surrogate (0xDC00 <= code && code <= 0xDFFF) - if (i === 0) { - throw 'Low surrogate without preceding high surrogate'; - } - const prev = str.charCodeAt(i - 1); - // (could change last hex to 0xDB7F to treat high private - // surrogates as single characters) - if (0xd800 > prev || prev > 0xdbff) { - throw 'Low surrogate without preceding high surrogate'; - } - // We can pass over low surrogates now as the second component - // in a pair which we have already processed - return false; -}; + } -/** - * Returns klass "Class" object of given namespace - * @memberOf fabric.util - * @param {String} type Type of object (eg. 'circle') - * @param {object} namespace Namespace to get klass "Class" object from - * @return {Object} klass "Class" - */ -const getKlass = (type, namespace = fabric$1) => namespace[capitalize(camelize(type), true)]; -/** - * Loads image element from given url and resolve it, or catch. - * @memberOf fabric.util - * @param {String} url URL representing an image - * @param {Object} [options] image loading options - * @param {string} [options.crossOrigin] cors value for the image loading, default to anonymous - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @param {Promise} img the loaded image. - */ -const loadImage = (url, { signal, crossOrigin = null } = {}) => new Promise(function (resolve, reject) { - if (signal && signal.aborted) { - return reject(new Error('`options.signal` is in `aborted` state')); - } - const img = createImage(); - let abort; - if (signal) { - abort = function (err) { - img.src = ''; - reject(err); - }; - signal.addEventListener('abort', abort, { once: true }); - } - const done = function () { - img.onload = img.onerror = null; - abort && (signal === null || signal === void 0 ? void 0 : signal.removeEventListener('abort', abort)); - resolve(img); - }; - if (!url) { - done(); + if (!numTotalObjects) { + callback && callback(enlivenedObjects); return; - } - img.onload = done; - img.onerror = function () { - abort && (signal === null || signal === void 0 ? void 0 : signal.removeEventListener('abort', abort)); - reject(new Error('Error loading ' + img.src)); - }; - crossOrigin && (img.crossOrigin = crossOrigin); - img.src = url; -}); -/** - * Creates corresponding fabric instances from their object representations - * @static - * @memberOf fabric.util - * @param {Object[]} objects Objects to enliven - * @param {object} [options] - * @param {object} [options.namespace] Namespace to get klass "Class" object from - * @param {(serializedObj: object, instance: fabric.Object) => any} [options.reviver] Method for further parsing of object elements, - * called after each fabric object created. - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @returns {Promise} - */ -const enlivenObjects = (objects, { signal, reviver = noop, namespace = fabric$1 } = {}) => new Promise((resolve, reject) => { - const instances = []; - signal && signal.addEventListener('abort', reject, { once: true }); - Promise.all(objects.map((obj) => getKlass(obj.type, namespace) - .fromObject(obj, { - signal, - reviver, - namespace, - }) - .then((fabricInstance) => { - reviver(obj, fabricInstance); - instances.push(fabricInstance); - return fabricInstance; - }))) - .then(resolve) - .catch((error) => { - // cleanup - instances.forEach(function (instance) { - instance.dispose && instance.dispose(); + } + + objects.forEach(function (o, index) { + // if sparse array + if (!o || !o.type) { + onLoaded(); + return; + } + var klass = fabric.util.getKlass(o.type, namespace); + klass.fromObject(o, function (obj, error) { + error || (enlivenedObjects[index] = obj); + reviver && reviver(o, obj, error); + onLoaded(); }); - reject(error); - }) - .finally(() => { - signal && signal.removeEventListener('abort', reject); - }); -}); -/** - * Creates corresponding fabric instances residing in an object, e.g. `clipPath` - * @static - * @memberOf fabric.util - * @param {Object} object with properties to enlive ( fill, stroke, clipPath, path ) - * @param {object} [options] - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @returns {Promise<{[key:string]:fabric.Object|fabric.Pattern|fabric.Gradient|null}>} the input object with enlived values - */ -const enlivenObjectEnlivables = (serializedObject, { signal } = {}) => new Promise((resolve, reject) => { - const instances = []; - signal && signal.addEventListener('abort', reject, { once: true }); - // enlive every possible property - const promises = Object.values(serializedObject).map((value) => { - if (!value) { - return value; - } - // gradient - if (value.colorStops) { - return new fabric$1.Gradient(value); - } - // clipPath - if (value.type) { - return enlivenObjects([value], { signal }).then(([enlived]) => { - instances.push(enlived); - return enlived; - }); - } - // pattern - if (value.source) { - return fabric$1.Pattern.fromObject(value, { signal }).then((pattern) => { - instances.push(pattern); - return pattern; - }); - } - return value; - }); - const keys = Object.keys(serializedObject); - Promise.all(promises) - .then((enlived) => { - return enlived.reduce(function (acc, instance, index) { - acc[keys[index]] = instance; - return acc; - }, {}); - }) - .then(resolve) - .catch(function (error) { - // cleanup - instances.forEach((instance) => { - instance.dispose && instance.dispose(); + }); + }, + + /** + * Creates corresponding fabric instances residing in an object, e.g. `clipPath` + * @see {@link fabric.Object.ENLIVEN_PROPS} + * @param {Object} object + * @param {Object} [context] assign enlived props to this object (pass null to skip this) + * @param {(objects:fabric.Object[]) => void} callback + */ + enlivenObjectEnlivables: function (object, context, callback) { + var enlivenProps = fabric.Object.ENLIVEN_PROPS.filter(function (key) { return !!object[key]; }); + fabric.util.enlivenObjects(enlivenProps.map(function (key) { return object[key]; }), function (enlivedProps) { + var objects = {}; + enlivenProps.forEach(function (key, index) { + objects[key] = enlivedProps[index]; + context && (context[key] = enlivedProps[index]); }); - reject(error); - }) - .finally(function () { - signal && signal.removeEventListener('abort', reject); - }); -}); + callback && callback(objects); + }); + }, -/** - * Populates an object with properties of another object - * @param {Object} source Source object - * @param {string[]} properties Properties names to include - * @returns object populated with the picked keys - */ -const pick = (source, keys = []) => { - return keys.reduce((o, key) => { - if (key in source) { - o[key] = source[key]; + /** + * Create and wait for loading of patterns + * @static + * @memberOf fabric.util + * @param {Array} patterns Objects to enliven + * @param {Function} callback Callback to invoke when all objects are created + * called after each fabric object created. + */ + enlivenPatterns: function(patterns, callback) { + patterns = patterns || []; + + function onLoaded() { + if (++numLoadedPatterns === numPatterns) { + callback && callback(enlivenedPatterns); } - return o; - }, {}); -}; + } -//@ts-nocheck -function getSvgRegex(arr) { - return new RegExp('^(' + arr.join('|') + ')\\b', 'i'); -} + var enlivenedPatterns = [], + numLoadedPatterns = 0, + numPatterns = patterns.length; + + if (!numPatterns) { + callback && callback(enlivenedPatterns); + return; + } + + patterns.forEach(function (p, index) { + if (p && p.source) { + new fabric.Pattern(p, function(pattern) { + enlivenedPatterns[index] = pattern; + onLoaded(); + }); + } + else { + enlivenedPatterns[index] = p; + onLoaded(); + } + }); + }, + + /** + * Groups SVG elements (usually those retrieved from SVG document) + * @static + * @memberOf fabric.util + * @param {Array} elements SVG elements to group + * @param {Object} [options] Options object + * @param {String} path Value to set sourcePath to + * @return {fabric.Object|fabric.Group} + */ + groupSVGElements: function(elements, options, path) { + var object; + if (elements && elements.length === 1) { + return elements[0]; + } + if (options) { + if (options.width && options.height) { + options.centerPoint = { + x: options.width / 2, + y: options.height / 2 + }; + } + else { + delete options.width; + delete options.height; + } + } + object = new fabric.Group(elements, options); + if (typeof path !== 'undefined') { + object.sourcePath = path; + } + return object; + }, + + /** + * Populates an object with properties of another object + * @static + * @memberOf fabric.util + * @param {Object} source Source object + * @param {Object} destination Destination object + * @return {Array} properties Properties names to include + */ + populateWithProperties: function(source, destination, properties) { + if (properties && Object.prototype.toString.call(properties) === '[object Array]') { + for (var i = 0, len = properties.length; i < len; i++) { + if (properties[i] in source) { + destination[properties[i]] = source[properties[i]]; + } + } + } + }, + + /** + * Creates canvas element + * @static + * @memberOf fabric.util + * @return {CanvasElement} initialized canvas element + */ + createCanvasElement: function() { + return fabric.document.createElement('canvas'); + }, + + /** + * Creates a canvas element that is a copy of another and is also painted + * @param {CanvasElement} canvas to copy size and content of + * @static + * @memberOf fabric.util + * @return {CanvasElement} initialized canvas element + */ + copyCanvasElement: function(canvas) { + var newCanvas = fabric.util.createCanvasElement(); + newCanvas.width = canvas.width; + newCanvas.height = canvas.height; + newCanvas.getContext('2d').drawImage(canvas, 0, 0); + return newCanvas; + }, + + /** + * since 2.6.0 moved from canvas instance to utility. + * @param {CanvasElement} canvasEl to copy size and content of + * @param {String} format 'jpeg' or 'png', in some browsers 'webp' is ok too + * @param {Number} quality <= 1 and > 0 + * @static + * @memberOf fabric.util + * @return {String} data url + */ + toDataURL: function(canvasEl, format, quality) { + return canvasEl.toDataURL('image/' + format, quality); + }, + + /** + * Creates image element (works on client and node) + * @static + * @memberOf fabric.util + * @return {HTMLImageElement} HTML image element + */ + createImage: function() { + return fabric.document.createElement('img'); + }, + + /** + * Multiply matrix A by matrix B to nest transformations + * @static + * @memberOf fabric.util + * @param {Array} a First transformMatrix + * @param {Array} b Second transformMatrix + * @param {Boolean} is2x2 flag to multiply matrices as 2x2 matrices + * @return {Array} The product of the two transform matrices + */ + multiplyTransformMatrices: function(a, b, is2x2) { + // Matrix multiply a * b + return [ + a[0] * b[0] + a[2] * b[1], + a[1] * b[0] + a[3] * b[1], + a[0] * b[2] + a[2] * b[3], + a[1] * b[2] + a[3] * b[3], + is2x2 ? 0 : a[0] * b[4] + a[2] * b[5] + a[4], + is2x2 ? 0 : a[1] * b[4] + a[3] * b[5] + a[5] + ]; + }, + + /** + * Decomposes standard 2x3 matrix into transform components + * @static + * @memberOf fabric.util + * @param {Array} a transformMatrix + * @return {Object} Components of transform + */ + qrDecompose: function(a) { + var angle = atan2(a[1], a[0]), + denom = pow(a[0], 2) + pow(a[1], 2), + scaleX = sqrt(denom), + scaleY = (a[0] * a[3] - a[2] * a[1]) / scaleX, + skewX = atan2(a[0] * a[2] + a[1] * a [3], denom); + return { + angle: angle / PiBy180, + scaleX: scaleX, + scaleY: scaleY, + skewX: skewX / PiBy180, + skewY: 0, + translateX: a[4], + translateY: a[5] + }; + }, + + /** + * Returns a transform matrix starting from an object of the same kind of + * the one returned from qrDecompose, useful also if you want to calculate some + * transformations from an object that is not enlived yet + * @static + * @memberOf fabric.util + * @param {Object} options + * @param {Number} [options.angle] angle in degrees + * @return {Number[]} transform matrix + */ + calcRotateMatrix: function(options) { + if (!options.angle) { + return fabric.iMatrix.concat(); + } + var theta = fabric.util.degreesToRadians(options.angle), + cos = fabric.util.cos(theta), + sin = fabric.util.sin(theta); + return [cos, sin, -sin, cos, 0, 0]; + }, + + /** + * Returns a transform matrix starting from an object of the same kind of + * the one returned from qrDecompose, useful also if you want to calculate some + * transformations from an object that is not enlived yet. + * is called DimensionsTransformMatrix because those properties are the one that influence + * the size of the resulting box of the object. + * @static + * @memberOf fabric.util + * @param {Object} options + * @param {Number} [options.scaleX] + * @param {Number} [options.scaleY] + * @param {Boolean} [options.flipX] + * @param {Boolean} [options.flipY] + * @param {Number} [options.skewX] + * @param {Number} [options.skewY] + * @return {Number[]} transform matrix + */ + calcDimensionsMatrix: function(options) { + var scaleX = typeof options.scaleX === 'undefined' ? 1 : options.scaleX, + scaleY = typeof options.scaleY === 'undefined' ? 1 : options.scaleY, + scaleMatrix = [ + options.flipX ? -scaleX : scaleX, + 0, + 0, + options.flipY ? -scaleY : scaleY, + 0, + 0], + multiply = fabric.util.multiplyTransformMatrices, + degreesToRadians = fabric.util.degreesToRadians; + if (options.skewX) { + scaleMatrix = multiply( + scaleMatrix, + [1, 0, Math.tan(degreesToRadians(options.skewX)), 1], + true); + } + if (options.skewY) { + scaleMatrix = multiply( + scaleMatrix, + [1, Math.tan(degreesToRadians(options.skewY)), 0, 1], + true); + } + return scaleMatrix; + }, + + /** + * Returns a transform matrix starting from an object of the same kind of + * the one returned from qrDecompose, useful also if you want to calculate some + * transformations from an object that is not enlived yet + * @static + * @memberOf fabric.util + * @param {Object} options + * @param {Number} [options.angle] + * @param {Number} [options.scaleX] + * @param {Number} [options.scaleY] + * @param {Boolean} [options.flipX] + * @param {Boolean} [options.flipY] + * @param {Number} [options.skewX] + * @param {Number} [options.skewX] + * @param {Number} [options.translateX] + * @param {Number} [options.translateY] + * @return {Number[]} transform matrix + */ + composeMatrix: function(options) { + var matrix = [1, 0, 0, 1, options.translateX || 0, options.translateY || 0], + multiply = fabric.util.multiplyTransformMatrices; + if (options.angle) { + matrix = multiply(matrix, fabric.util.calcRotateMatrix(options)); + } + if (options.scaleX !== 1 || options.scaleY !== 1 || + options.skewX || options.skewY || options.flipX || options.flipY) { + matrix = multiply(matrix, fabric.util.calcDimensionsMatrix(options)); + } + return matrix; + }, + + /** + * reset an object transform state to neutral. Top and left are not accounted for + * @static + * @memberOf fabric.util + * @param {fabric.Object} target object to transform + */ + resetObjectTransform: function (target) { + target.scaleX = 1; + target.scaleY = 1; + target.skewX = 0; + target.skewY = 0; + target.flipX = false; + target.flipY = false; + target.rotate(0); + }, + + /** + * Extract Object transform values + * @static + * @memberOf fabric.util + * @param {fabric.Object} target object to read from + * @return {Object} Components of transform + */ + saveObjectTransform: function (target) { + return { + scaleX: target.scaleX, + scaleY: target.scaleY, + skewX: target.skewX, + skewY: target.skewY, + angle: target.angle, + left: target.left, + flipX: target.flipX, + flipY: target.flipY, + top: target.top + }; + }, + + /** + * Returns true if context has transparent pixel + * at specified location (taking tolerance into account) + * @param {CanvasRenderingContext2D} ctx context + * @param {Number} x x coordinate + * @param {Number} y y coordinate + * @param {Number} tolerance Tolerance + */ + isTransparent: function(ctx, x, y, tolerance) { + + // If tolerance is > 0 adjust start coords to take into account. + // If moves off Canvas fix to 0 + if (tolerance > 0) { + if (x > tolerance) { + x -= tolerance; + } + else { + x = 0; + } + if (y > tolerance) { + y -= tolerance; + } + else { + y = 0; + } + } + + var _isTransparent = true, i, temp, + imageData = ctx.getImageData(x, y, (tolerance * 2) || 1, (tolerance * 2) || 1), + l = imageData.data.length; + + // Split image data - for tolerance > 1, pixelDataSize = 4; + for (i = 3; i < l; i += 4) { + temp = imageData.data[i]; + _isTransparent = temp <= 0; + if (_isTransparent === false) { + break; // Stop if colour found + } + } + + imageData = null; + + return _isTransparent; + }, + + /** + * Parse preserveAspectRatio attribute from element + * @param {string} attribute to be parsed + * @return {Object} an object containing align and meetOrSlice attribute + */ + parsePreserveAspectRatioAttribute: function(attribute) { + var meetOrSlice = 'meet', alignX = 'Mid', alignY = 'Mid', + aspectRatioAttrs = attribute.split(' '), align; + + if (aspectRatioAttrs && aspectRatioAttrs.length) { + meetOrSlice = aspectRatioAttrs.pop(); + if (meetOrSlice !== 'meet' && meetOrSlice !== 'slice') { + align = meetOrSlice; + meetOrSlice = 'meet'; + } + else if (aspectRatioAttrs.length) { + align = aspectRatioAttrs.pop(); + } + } + //divide align in alignX and alignY + alignX = align !== 'none' ? align.slice(1, 4) : 'none'; + alignY = align !== 'none' ? align.slice(5, 8) : 'none'; + return { + meetOrSlice: meetOrSlice, + alignX: alignX, + alignY: alignY + }; + }, + + /** + * Clear char widths cache for the given font family or all the cache if no + * fontFamily is specified. + * Use it if you know you are loading fonts in a lazy way and you are not waiting + * for custom fonts to load properly when adding text objects to the canvas. + * If a text object is added when its own font is not loaded yet, you will get wrong + * measurement and so wrong bounding boxes. + * After the font cache is cleared, either change the textObject text content or call + * initDimensions() to trigger a recalculation + * @memberOf fabric.util + * @param {String} [fontFamily] font family to clear + */ + clearFabricFontCache: function(fontFamily) { + fontFamily = (fontFamily || '').toLowerCase(); + if (!fontFamily) { + fabric.charWidthsCache = { }; + } + else if (fabric.charWidthsCache[fontFamily]) { + delete fabric.charWidthsCache[fontFamily]; + } + }, + + /** + * Given current aspect ratio, determines the max width and height that can + * respect the total allowed area for the cache. + * @memberOf fabric.util + * @param {Number} ar aspect ratio + * @param {Number} maximumArea Maximum area you want to achieve + * @return {Object.x} Limited dimensions by X + * @return {Object.y} Limited dimensions by Y + */ + limitDimsByArea: function(ar, maximumArea) { + var roughWidth = Math.sqrt(maximumArea * ar), + perfLimitSizeY = Math.floor(maximumArea / roughWidth); + return { x: Math.floor(roughWidth), y: perfLimitSizeY }; + }, + + capValue: function(min, value, max) { + return Math.max(min, Math.min(value, max)); + }, + + /** + * Finds the scale for the object source to fit inside the object destination, + * keeping aspect ratio intact. + * respect the total allowed area for the cache. + * @memberOf fabric.util + * @param {Object | fabric.Object} source + * @param {Number} source.height natural unscaled height of the object + * @param {Number} source.width natural unscaled width of the object + * @param {Object | fabric.Object} destination + * @param {Number} destination.height natural unscaled height of the object + * @param {Number} destination.width natural unscaled width of the object + * @return {Number} scale factor to apply to source to fit into destination + */ + findScaleToFit: function(source, destination) { + return Math.min(destination.width / source.width, destination.height / source.height); + }, + + /** + * Finds the scale for the object source to cover entirely the object destination, + * keeping aspect ratio intact. + * respect the total allowed area for the cache. + * @memberOf fabric.util + * @param {Object | fabric.Object} source + * @param {Number} source.height natural unscaled height of the object + * @param {Number} source.width natural unscaled width of the object + * @param {Object | fabric.Object} destination + * @param {Number} destination.height natural unscaled height of the object + * @param {Number} destination.width natural unscaled width of the object + * @return {Number} scale factor to apply to source to cover destination + */ + findScaleToCover: function(source, destination) { + return Math.max(destination.width / source.width, destination.height / source.height); + }, + + /** + * given an array of 6 number returns something like `"matrix(...numbers)"` + * @memberOf fabric.util + * @param {Array} transform an array with 6 numbers + * @return {String} transform matrix for svg + * @return {Object.y} Limited dimensions by Y + */ + matrixToSVG: function(transform) { + return 'matrix(' + transform.map(function(value) { + return fabric.util.toFixed(value, fabric.Object.NUM_FRACTION_DIGITS); + }).join(' ') + ')'; + }, + + /** + * given an object and a transform, apply the inverse transform to the object, + * this is equivalent to remove from that object that transformation, so that + * added in a space with the removed transform, the object will be the same as before. + * Removing from an object a transform that scale by 2 is like scaling it by 1/2. + * Removing from an object a transfrom that rotate by 30deg is like rotating by 30deg + * in the opposite direction. + * This util is used to add objects inside transformed groups or nested groups. + * @memberOf fabric.util + * @param {fabric.Object} object the object you want to transform + * @param {Array} transform the destination transform + */ + removeTransformFromObject: function(object, transform) { + var inverted = fabric.util.invertTransform(transform), + finalTransform = fabric.util.multiplyTransformMatrices(inverted, object.calcOwnMatrix()); + fabric.util.applyTransformToObject(object, finalTransform); + }, + + /** + * given an object and a transform, apply the transform to the object. + * this is equivalent to change the space where the object is drawn. + * Adding to an object a transform that scale by 2 is like scaling it by 2. + * This is used when removing an object from an active selection for example. + * @memberOf fabric.util + * @param {fabric.Object} object the object you want to transform + * @param {Array} transform the destination transform + */ + addTransformToObject: function(object, transform) { + fabric.util.applyTransformToObject( + object, + fabric.util.multiplyTransformMatrices(transform, object.calcOwnMatrix()) + ); + }, + + /** + * discard an object transform state and apply the one from the matrix. + * @memberOf fabric.util + * @param {fabric.Object} object the object you want to transform + * @param {Array} transform the destination transform + */ + applyTransformToObject: function(object, transform) { + var options = fabric.util.qrDecompose(transform), + center = new fabric.Point(options.translateX, options.translateY); + object.flipX = false; + object.flipY = false; + object.set('scaleX', options.scaleX); + object.set('scaleY', options.scaleY); + object.skewX = options.skewX; + object.skewY = options.skewY; + object.angle = options.angle; + object.setPositionByOrigin(center, 'center', 'center'); + }, + + /** + * given a width and height, return the size of the bounding box + * that can contains the box with width/height with applied transform + * described in options. + * Use to calculate the boxes around objects for controls. + * @memberOf fabric.util + * @param {Number} width + * @param {Number} height + * @param {Object} options + * @param {Number} options.scaleX + * @param {Number} options.scaleY + * @param {Number} options.skewX + * @param {Number} options.skewY + * @return {Object.x} width of containing + * @return {Object.y} height of containing + */ + sizeAfterTransform: function(width, height, options) { + var dimX = width / 2, dimY = height / 2, + points = [ + { + x: -dimX, + y: -dimY + }, + { + x: dimX, + y: -dimY + }, + { + x: -dimX, + y: dimY + }, + { + x: dimX, + y: dimY + }], + transformMatrix = fabric.util.calcDimensionsMatrix(options), + bbox = fabric.util.makeBoundingBoxFromPoints(points, transformMatrix); + return { + x: bbox.width, + y: bbox.height, + }; + }, + + /** + * Merges 2 clip paths into one visually equal clip path + * + * **IMPORTANT**:\ + * Does **NOT** clone the arguments, clone them proir if necessary. + * + * Creates a wrapper (group) that contains one clip path and is clipped by the other so content is kept where both overlap. + * Use this method if both the clip paths may have nested clip paths of their own, so assigning one to the other's clip path property is not possible. + * + * In order to handle the `inverted` property we follow logic described in the following cases:\ + * **(1)** both clip paths are inverted - the clip paths pass the inverted prop to the wrapper and loose it themselves.\ + * **(2)** one is inverted and the other isn't - the wrapper shouldn't become inverted and the inverted clip path must clip the non inverted one to produce an identical visual effect.\ + * **(3)** both clip paths are not inverted - wrapper and clip paths remain unchanged. + * + * @memberOf fabric.util + * @param {fabric.Object} c1 + * @param {fabric.Object} c2 + * @returns {fabric.Object} merged clip path + */ + mergeClipPaths: function (c1, c2) { + var a = c1, b = c2; + if (a.inverted && !b.inverted) { + // case (2) + a = c2; + b = c1; + } + // `b` becomes `a`'s clip path so we transform `b` to `a` coordinate plane + fabric.util.applyTransformToObject( + b, + fabric.util.multiplyTransformMatrices( + fabric.util.invertTransform(a.calcTransformMatrix()), + b.calcTransformMatrix() + ) + ); + // assign the `inverted` prop to the wrapping group + var inverted = a.inverted && b.inverted; + if (inverted) { + // case (1) + a.inverted = b.inverted = false; + } + return new fabric.Group([a], { clipPath: b, inverted: inverted }); + }, + }; +})(typeof exports !== 'undefined' ? exports : this); + + +(function() { + var _join = Array.prototype.join, + commandLengths = { + m: 2, + l: 2, + h: 1, + v: 1, + c: 6, + s: 4, + q: 4, + t: 2, + a: 7 + }, + repeatedCommands = { + m: 'l', + M: 'L' + }; + function segmentToBezier(th2, th3, cosTh, sinTh, rx, ry, cx1, cy1, mT, fromX, fromY) { + var costh2 = fabric.util.cos(th2), + sinth2 = fabric.util.sin(th2), + costh3 = fabric.util.cos(th3), + sinth3 = fabric.util.sin(th3), + toX = cosTh * rx * costh3 - sinTh * ry * sinth3 + cx1, + toY = sinTh * rx * costh3 + cosTh * ry * sinth3 + cy1, + cp1X = fromX + mT * ( -cosTh * rx * sinth2 - sinTh * ry * costh2), + cp1Y = fromY + mT * ( -sinTh * rx * sinth2 + cosTh * ry * costh2), + cp2X = toX + mT * ( cosTh * rx * sinth3 + sinTh * ry * costh3), + cp2Y = toY + mT * ( sinTh * rx * sinth3 - cosTh * ry * costh3); + + return ['C', + cp1X, cp1Y, + cp2X, cp2Y, + toX, toY + ]; + } + + /* Adapted from http://dxr.mozilla.org/mozilla-central/source/content/svg/content/src/nsSVGPathDataParser.cpp + * by Andrea Bogazzi code is under MPL. if you don't have a copy of the license you can take it here + * http://mozilla.org/MPL/2.0/ + */ + function arcToSegments(toX, toY, rx, ry, large, sweep, rotateX) { + var PI = Math.PI, th = rotateX * PI / 180, + sinTh = fabric.util.sin(th), + cosTh = fabric.util.cos(th), + fromX = 0, fromY = 0; + + rx = Math.abs(rx); + ry = Math.abs(ry); + + var px = -cosTh * toX * 0.5 - sinTh * toY * 0.5, + py = -cosTh * toY * 0.5 + sinTh * toX * 0.5, + rx2 = rx * rx, ry2 = ry * ry, py2 = py * py, px2 = px * px, + pl = rx2 * ry2 - rx2 * py2 - ry2 * px2, + root = 0; -//@ts-nocheck -const cssRules = {}; -const gradientDefs = {}; -const clipPaths = {}; -const reNum = '(?:[-+]?(?:\\d+|\\d*\\.\\d+)(?:[eE][-+]?\\d+)?)'; -const svgNS = 'http://www.w3.org/2000/svg'; -const commaWsp = '(?:\\s+,?\\s*|,\\s*)'; -const rePathCommand = /([-+]?((\d+\.\d+)|((\d+)|(\.\d+)))(?:[eE][-+]?\d+)?)/gi; -const reFontDeclaration = new RegExp('(normal|italic)?\\s*(normal|small-caps)?\\s*' + - '(normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900)?\\s*(' + - reNum + - '(?:px|cm|mm|em|pt|pc|in)*)(?:\\/(normal|' + - reNum + - '))?\\s+(.*)'); -const svgValidTagNames = [ - 'path', - 'circle', - 'polygon', - 'polyline', - 'ellipse', - 'rect', - 'line', - 'image', - 'text', -], svgViewBoxElements = ['symbol', 'image', 'marker', 'pattern', 'view', 'svg'], svgInvalidAncestors = [ - 'pattern', - 'defs', - 'symbol', - 'metadata', - 'clipPath', - 'mask', - 'desc', -], svgValidParents = ['symbol', 'g', 'a', 'svg', 'clipPath', 'defs'], attributesMap = { - cx: 'left', - x: 'left', - r: 'radius', - cy: 'top', - y: 'top', - display: 'visible', - visibility: 'visible', - transform: 'transformMatrix', - 'fill-opacity': 'fillOpacity', - 'fill-rule': 'fillRule', - 'font-family': 'fontFamily', - 'font-size': 'fontSize', - 'font-style': 'fontStyle', - 'font-weight': 'fontWeight', - 'letter-spacing': 'charSpacing', - 'paint-order': 'paintFirst', - 'stroke-dasharray': 'strokeDashArray', - 'stroke-dashoffset': 'strokeDashOffset', - 'stroke-linecap': 'strokeLineCap', - 'stroke-linejoin': 'strokeLineJoin', - 'stroke-miterlimit': 'strokeMiterLimit', - 'stroke-opacity': 'strokeOpacity', - 'stroke-width': 'strokeWidth', - 'text-decoration': 'textDecoration', - 'text-anchor': 'textAnchor', - opacity: 'opacity', - 'clip-path': 'clipPath', - 'clip-rule': 'clipRule', - 'vector-effect': 'strokeUniform', - 'image-rendering': 'imageSmoothing', -}, colorAttributes = { - stroke: 'strokeOpacity', - fill: 'fillOpacity', -}, fSize = 'font-size', cPath = 'clip-path'; -const svgValidTagNamesRegEx = getSvgRegex(svgValidTagNames); -const svgViewBoxElementsRegEx = getSvgRegex(svgViewBoxElements); -const svgInvalidAncestorsRegEx = getSvgRegex(svgInvalidAncestors); -const svgValidParentsRegEx = getSvgRegex(svgValidParents); -// http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute -// matches, e.g.: +14.56e-12, etc. -const reViewBoxAttrValue = new RegExp('^' + - '\\s*(' + - reNum + - '+)\\s*,?' + - '\\s*(' + - reNum + - '+)\\s*,?' + - '\\s*(' + - reNum + - '+)\\s*,?' + - '\\s*(' + - reNum + - '+)\\s*' + - '$'); - -//@ts-nocheck -const commandLengths = { - m: 2, - l: 2, - h: 1, - v: 1, - c: 6, - s: 4, - q: 4, - t: 2, - a: 7, -}; -const repeatedCommands = { - m: 'l', - M: 'L', -}; -const segmentToBezier = (th2, th3, cosTh, sinTh, rx, ry, cx1, cy1, mT, fromX, fromY) => { - const costh2 = cos(th2), sinth2 = sin(th2), costh3 = cos(th3), sinth3 = sin(th3), toX = cosTh * rx * costh3 - sinTh * ry * sinth3 + cx1, toY = sinTh * rx * costh3 + cosTh * ry * sinth3 + cy1, cp1X = fromX + mT * (-cosTh * rx * sinth2 - sinTh * ry * costh2), cp1Y = fromY + mT * (-sinTh * rx * sinth2 + cosTh * ry * costh2), cp2X = toX + mT * (cosTh * rx * sinth3 + sinTh * ry * costh3), cp2Y = toY + mT * (sinTh * rx * sinth3 - cosTh * ry * costh3); - return ['C', cp1X, cp1Y, cp2X, cp2Y, toX, toY]; -}; -/* Adapted from http://dxr.mozilla.org/mozilla-central/source/content/svg/content/src/nsSVGPathDataParser.cpp - * by Andrea Bogazzi code is under MPL. if you don't have a copy of the license you can take it here - * http://mozilla.org/MPL/2.0/ - */ -const arcToSegments = (toX, toY, rx, ry, large, sweep, rotateX) => { - let fromX = 0, fromY = 0, root = 0; - const PI = Math.PI, th = rotateX * PiBy180, sinTh = sin(th), cosTh = cos(th), px = 0.5 * (-cosTh * toX - sinTh * toY), py = 0.5 * (-cosTh * toY + sinTh * toX), rx2 = rx ** 2, ry2 = ry ** 2, py2 = py ** 2, px2 = px ** 2, pl = rx2 * ry2 - rx2 * py2 - ry2 * px2; - let _rx = Math.abs(rx); - let _ry = Math.abs(ry); if (pl < 0) { - const s = Math.sqrt(1 - pl / (rx2 * ry2)); - _rx *= s; - _ry *= s; + var s = Math.sqrt(1 - pl / (rx2 * ry2)); + rx *= s; + ry *= s; } else { - root = - (large === sweep ? -1.0 : 1.0) * Math.sqrt(pl / (rx2 * py2 + ry2 * px2)); + root = (large === sweep ? -1.0 : 1.0) * + Math.sqrt( pl / (rx2 * py2 + ry2 * px2)); } - const cx = (root * _rx * py) / _ry, cy = (-root * _ry * px) / _rx, cx1 = cosTh * cx - sinTh * cy + toX * 0.5, cy1 = sinTh * cx + cosTh * cy + toY * 0.5; - let mTheta = calcVectorAngle(1, 0, (px - cx) / _rx, (py - cy) / _ry); - let dtheta = calcVectorAngle((px - cx) / _rx, (py - cy) / _ry, (-px - cx) / _rx, (-py - cy) / _ry); + + var cx = root * rx * py / ry, + cy = -root * ry * px / rx, + cx1 = cosTh * cx - sinTh * cy + toX * 0.5, + cy1 = sinTh * cx + cosTh * cy + toY * 0.5, + mTheta = calcVectorAngle(1, 0, (px - cx) / rx, (py - cy) / ry), + dtheta = calcVectorAngle((px - cx) / rx, (py - cy) / ry, (-px - cx) / rx, (-py - cy) / ry); + if (sweep === 0 && dtheta > 0) { - dtheta -= 2 * PI; + dtheta -= 2 * PI; } else if (sweep === 1 && dtheta < 0) { - dtheta += 2 * PI; + dtheta += 2 * PI; } + // Convert into cubic bezier segments <= 90deg - const segments = Math.ceil(Math.abs((dtheta / PI) * 2)), result = new Array(segments), mDelta = dtheta / segments, mT = ((8 / 3) * Math.sin(mDelta / 4) * Math.sin(mDelta / 4)) / - Math.sin(mDelta / 2); - let th3 = mTheta + mDelta; - for (let i = 0; i < segments; i++) { - result[i] = segmentToBezier(mTheta, th3, cosTh, sinTh, _rx, _ry, cx1, cy1, mT, fromX, fromY); - fromX = result[i][5]; - fromY = result[i][6]; - mTheta = th3; - th3 += mDelta; + var segments = Math.ceil(Math.abs(dtheta / PI * 2)), + result = [], mDelta = dtheta / segments, + mT = 8 / 3 * Math.sin(mDelta / 4) * Math.sin(mDelta / 4) / Math.sin(mDelta / 2), + th3 = mTheta + mDelta; + + for (var i = 0; i < segments; i++) { + result[i] = segmentToBezier(mTheta, th3, cosTh, sinTh, rx, ry, cx1, cy1, mT, fromX, fromY); + fromX = result[i][5]; + fromY = result[i][6]; + mTheta = th3; + th3 += mDelta; } return result; -}; -/* - * Private - */ -const calcVectorAngle = (ux, uy, vx, vy) => { - const ta = Math.atan2(uy, ux), tb = Math.atan2(vy, vx); + } + + /* + * Private + */ + function calcVectorAngle(ux, uy, vx, vy) { + var ta = Math.atan2(uy, ux), + tb = Math.atan2(vy, vx); if (tb >= ta) { - return tb - ta; + return tb - ta; } else { - return 2 * Math.PI - (ta - tb); + return 2 * Math.PI - (ta - tb); } -}; -// functions for the Cubic beizer -// taken from: https://github.com/konvajs/konva/blob/7.0.5/src/shapes/Path.ts#L350 -const CB1 = (t) => t ** 3; -const CB2 = (t) => 3 * t ** 2 * (1 - t); -const CB3 = (t) => 3 * t * (1 - t) ** 2; -const CB4 = (t) => (1 - t) ** 3; -/** - * Calculate bounding box of a beziercurve - * @param {Number} x0 starting point - * @param {Number} y0 - * @param {Number} x1 first control point - * @param {Number} y1 - * @param {Number} x2 secondo control point - * @param {Number} y2 - * @param {Number} x3 end of bezier - * @param {Number} y3 - */ -// taken from http://jsbin.com/ivomiq/56/edit no credits available for that. -// TODO: can we normalize this with the starting points set at 0 and then translated the bbox? -function getBoundsOfCurve(x0, y0, x1, y1, x2, y2, x3, y3) { - let argsString; - if (config.cachesBoundsOfCurve) { - // eslint-disable-next-line - argsString = [...arguments].join(); - if (cache.boundsOfCurveCache[argsString]) { - return cache.boundsOfCurveCache[argsString]; - } + } + + /** + * Calculate bounding box of a beziercurve + * @param {Number} x0 starting point + * @param {Number} y0 + * @param {Number} x1 first control point + * @param {Number} y1 + * @param {Number} x2 secondo control point + * @param {Number} y2 + * @param {Number} x3 end of bezier + * @param {Number} y3 + */ + // taken from http://jsbin.com/ivomiq/56/edit no credits available for that. + // TODO: can we normalize this with the starting points set at 0 and then translated the bbox? + function getBoundsOfCurve(x0, y0, x1, y1, x2, y2, x3, y3) { + var argsString; + if (fabric.cachesBoundsOfCurve) { + argsString = _join.call(arguments); + if (fabric.boundsOfCurveCache[argsString]) { + return fabric.boundsOfCurveCache[argsString]; + } } - const sqrt = Math.sqrt, abs = Math.abs, tvalues = [], bounds = [[], []]; - let b = 6 * x0 - 12 * x1 + 6 * x2; - let a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3; - let c = 3 * x1 - 3 * x0; - for (let i = 0; i < 2; ++i) { - if (i > 0) { - b = 6 * y0 - 12 * y1 + 6 * y2; - a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3; - c = 3 * y1 - 3 * y0; - } - if (abs(a) < 1e-12) { - if (abs(b) < 1e-12) { - continue; - } - const t = -c / b; - if (0 < t && t < 1) { - tvalues.push(t); - } - continue; - } - const b2ac = b * b - 4 * c * a; - if (b2ac < 0) { - continue; - } - const sqrtb2ac = sqrt(b2ac); - const t1 = (-b + sqrtb2ac) / (2 * a); - if (0 < t1 && t1 < 1) { - tvalues.push(t1); + + var sqrt = Math.sqrt, + min = Math.min, max = Math.max, + abs = Math.abs, tvalues = [], + bounds = [[], []], + a, b, c, t, t1, t2, b2ac, sqrtb2ac; + + b = 6 * x0 - 12 * x1 + 6 * x2; + a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3; + c = 3 * x1 - 3 * x0; + + for (var i = 0; i < 2; ++i) { + if (i > 0) { + b = 6 * y0 - 12 * y1 + 6 * y2; + a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3; + c = 3 * y1 - 3 * y0; + } + + if (abs(a) < 1e-12) { + if (abs(b) < 1e-12) { + continue; } - const t2 = (-b - sqrtb2ac) / (2 * a); - if (0 < t2 && t2 < 1) { - tvalues.push(t2); + t = -c / b; + if (0 < t && t < 1) { + tvalues.push(t); } + continue; + } + b2ac = b * b - 4 * c * a; + if (b2ac < 0) { + continue; + } + sqrtb2ac = sqrt(b2ac); + t1 = (-b + sqrtb2ac) / (2 * a); + if (0 < t1 && t1 < 1) { + tvalues.push(t1); + } + t2 = (-b - sqrtb2ac) / (2 * a); + if (0 < t2 && t2 < 1) { + tvalues.push(t2); + } } - let j = tvalues.length; - const jlen = j; - const iterator = getPointOnCubicBezierIterator(x0, y0, x1, y1, x2, y2, x3, y3); + + var x, y, j = tvalues.length, jlen = j, mt; while (j--) { - const { x, y } = iterator(tvalues[j]); - bounds[0][j] = x; - bounds[1][j] = y; + t = tvalues[j]; + mt = 1 - t; + x = (mt * mt * mt * x0) + (3 * mt * mt * t * x1) + (3 * mt * t * t * x2) + (t * t * t * x3); + bounds[0][j] = x; + + y = (mt * mt * mt * y0) + (3 * mt * mt * t * y1) + (3 * mt * t * t * y2) + (t * t * t * y3); + bounds[1][j] = y; } + bounds[0][jlen] = x0; bounds[1][jlen] = y0; bounds[0][jlen + 1] = x3; bounds[1][jlen + 1] = y3; - const result = [ - { - x: Math.min(...bounds[0]), - y: Math.min(...bounds[1]), - }, - { - x: Math.max(...bounds[0]), - y: Math.max(...bounds[1]), - }, + var result = [ + { + x: min.apply(null, bounds[0]), + y: min.apply(null, bounds[1]) + }, + { + x: max.apply(null, bounds[0]), + y: max.apply(null, bounds[1]) + } ]; - if (config.cachesBoundsOfCurve) { - cache.boundsOfCurveCache[argsString] = result; + if (fabric.cachesBoundsOfCurve) { + fabric.boundsOfCurveCache[argsString] = result; } return result; -} -/** - * Converts arc to a bunch of bezier curves - * @param {Number} fx starting point x - * @param {Number} fy starting point y - * @param {Array} coords Arc command - */ -const fromArcToBeziers = (fx, fy, [_, rx, ry, rot, large, sweep, tx, ty] = []) => { - const segsNorm = arcToSegments(tx - fx, ty - fy, rx, ry, large, sweep, rot); - for (let i = 0, len = segsNorm.length; i < len; i++) { - segsNorm[i][1] += fx; - segsNorm[i][2] += fy; - segsNorm[i][3] += fx; - segsNorm[i][4] += fy; - segsNorm[i][5] += fx; - segsNorm[i][6] += fy; + } + + /** + * Converts arc to a bunch of bezier curves + * @param {Number} fx starting point x + * @param {Number} fy starting point y + * @param {Array} coords Arc command + */ + function fromArcToBeziers(fx, fy, coords) { + var rx = coords[1], + ry = coords[2], + rot = coords[3], + large = coords[4], + sweep = coords[5], + tx = coords[6], + ty = coords[7], + segsNorm = arcToSegments(tx - fx, ty - fy, rx, ry, large, sweep, rot); + + for (var i = 0, len = segsNorm.length; i < len; i++) { + segsNorm[i][1] += fx; + segsNorm[i][2] += fy; + segsNorm[i][3] += fx; + segsNorm[i][4] += fy; + segsNorm[i][5] += fx; + segsNorm[i][6] += fy; } return segsNorm; -}; -/** - * This function take a parsed SVG path and make it simpler for fabricJS logic. - * simplification consist of: only UPPERCASE absolute commands ( relative converted to absolute ) - * S converted in C, T converted in Q, A converted in C. - * @param {Array} path the array of commands of a parsed svg path for fabric.Path - * @return {Array} the simplified array of commands of a parsed svg path for fabric.Path - */ -const makePathSimpler = (path) => { + }; + + /** + * This function take a parsed SVG path and make it simpler for fabricJS logic. + * simplification consist of: only UPPERCASE absolute commands ( relative converted to absolute ) + * S converted in C, T converted in Q, A converted in C. + * @param {Array} path the array of commands of a parsed svg path for fabric.Path + * @return {Array} the simplified array of commands of a parsed svg path for fabric.Path + */ + function makePathSimpler(path) { // x and y represent the last point of the path. the previous command point. // we add them to each relative command to make it an absolute comment. // we also swap the v V h H with L, because are easier to transform. - let x = 0, y = 0; - const len = path.length; - // x1 and y1 represent the last point of the subpath. the subpath is started with - // m or M command. When a z or Z command is drawn, x and y need to be resetted to - // the last x1 and y1. - let x1 = 0, y1 = 0; - // previous will host the letter of the previous command, to handle S and T. - // controlX and controlY will host the previous reflected control point - let destinationPath = [], previous, controlX, controlY; - for (let i = 0; i < len; ++i) { - let converted = false; - const current = path[i].slice(0); - switch (current[0] // first letter - ) { - case 'l': // lineto, relative - current[0] = 'L'; - current[1] += x; - current[2] += y; - // falls through - case 'L': - x = current[1]; - y = current[2]; - break; - case 'h': // horizontal lineto, relative - current[1] += x; - // falls through - case 'H': - current[0] = 'L'; - current[2] = y; - x = current[1]; - break; - case 'v': // vertical lineto, relative - current[1] += y; - // falls through - case 'V': - current[0] = 'L'; - y = current[1]; - current[1] = x; - current[2] = y; - break; - case 'm': // moveTo, relative - current[0] = 'M'; - current[1] += x; - current[2] += y; - // falls through - case 'M': - x = current[1]; - y = current[2]; - x1 = current[1]; - y1 = current[2]; - break; - case 'c': // bezierCurveTo, relative - current[0] = 'C'; - current[1] += x; - current[2] += y; - current[3] += x; - current[4] += y; - current[5] += x; - current[6] += y; - // falls through - case 'C': - controlX = current[3]; - controlY = current[4]; - x = current[5]; - y = current[6]; - break; - case 's': // shorthand cubic bezierCurveTo, relative - current[0] = 'S'; - current[1] += x; - current[2] += y; - current[3] += x; - current[4] += y; - // falls through - case 'S': - // would be sScC but since we are swapping sSc for C, we check just that. - if (previous === 'C') { - // calculate reflection of previous control points - controlX = 2 * x - controlX; - controlY = 2 * y - controlY; - } - else { - // If there is no previous command or if the previous command was not a C, c, S, or s, - // the control point is coincident with the current point - controlX = x; - controlY = y; - } - x = current[3]; - y = current[4]; - current[0] = 'C'; - current[5] = current[3]; - current[6] = current[4]; - current[3] = current[1]; - current[4] = current[2]; - current[1] = controlX; - current[2] = controlY; - // current[3] and current[4] are NOW the second control point. - // we keep it for the next reflection. - controlX = current[3]; - controlY = current[4]; - break; - case 'q': // quadraticCurveTo, relative - current[0] = 'Q'; - current[1] += x; - current[2] += y; - current[3] += x; - current[4] += y; - // falls through - case 'Q': - controlX = current[1]; - controlY = current[2]; - x = current[3]; - y = current[4]; - break; - case 't': // shorthand quadraticCurveTo, relative - current[0] = 'T'; - current[1] += x; - current[2] += y; - // falls through - case 'T': - if (previous === 'Q') { - // calculate reflection of previous control point - controlX = 2 * x - controlX; - controlY = 2 * y - controlY; - } - else { - // If there is no previous command or if the previous command was not a Q, q, T or t, - // assume the control point is coincident with the current point - controlX = x; - controlY = y; - } - current[0] = 'Q'; - x = current[1]; - y = current[2]; - current[1] = controlX; - current[2] = controlY; - current[3] = x; - current[4] = y; - break; - case 'a': - current[0] = 'A'; - current[6] += x; - current[7] += y; - // falls through - case 'A': - converted = true; - destinationPath = destinationPath.concat(fromArcToBeziers(x, y, current)); - x = current[6]; - y = current[7]; - break; - case 'z': - case 'Z': - x = x1; - y = y1; - break; - } - if (!converted) { - destinationPath.push(current); - } - previous = current[0]; + var x = 0, y = 0, len = path.length, + // x1 and y1 represent the last point of the subpath. the subpath is started with + // m or M command. When a z or Z command is drawn, x and y need to be resetted to + // the last x1 and y1. + x1 = 0, y1 = 0, current, i, converted, + // previous will host the letter of the previous command, to handle S and T. + // controlX and controlY will host the previous reflected control point + destinationPath = [], previous, controlX, controlY; + for (i = 0; i < len; ++i) { + converted = false; + current = path[i].slice(0); + switch (current[0]) { // first letter + case 'l': // lineto, relative + current[0] = 'L'; + current[1] += x; + current[2] += y; + // falls through + case 'L': + x = current[1]; + y = current[2]; + break; + case 'h': // horizontal lineto, relative + current[1] += x; + // falls through + case 'H': + current[0] = 'L'; + current[2] = y; + x = current[1]; + break; + case 'v': // vertical lineto, relative + current[1] += y; + // falls through + case 'V': + current[0] = 'L'; + y = current[1]; + current[1] = x; + current[2] = y; + break; + case 'm': // moveTo, relative + current[0] = 'M'; + current[1] += x; + current[2] += y; + // falls through + case 'M': + x = current[1]; + y = current[2]; + x1 = current[1]; + y1 = current[2]; + break; + case 'c': // bezierCurveTo, relative + current[0] = 'C'; + current[1] += x; + current[2] += y; + current[3] += x; + current[4] += y; + current[5] += x; + current[6] += y; + // falls through + case 'C': + controlX = current[3]; + controlY = current[4]; + x = current[5]; + y = current[6]; + break; + case 's': // shorthand cubic bezierCurveTo, relative + current[0] = 'S'; + current[1] += x; + current[2] += y; + current[3] += x; + current[4] += y; + // falls through + case 'S': + // would be sScC but since we are swapping sSc for C, we check just that. + if (previous === 'C') { + // calculate reflection of previous control points + controlX = 2 * x - controlX; + controlY = 2 * y - controlY; + } + else { + // If there is no previous command or if the previous command was not a C, c, S, or s, + // the control point is coincident with the current point + controlX = x; + controlY = y; + } + x = current[3]; + y = current[4]; + current[0] = 'C'; + current[5] = current[3]; + current[6] = current[4]; + current[3] = current[1]; + current[4] = current[2]; + current[1] = controlX; + current[2] = controlY; + // current[3] and current[4] are NOW the second control point. + // we keep it for the next reflection. + controlX = current[3]; + controlY = current[4]; + break; + case 'q': // quadraticCurveTo, relative + current[0] = 'Q'; + current[1] += x; + current[2] += y; + current[3] += x; + current[4] += y; + // falls through + case 'Q': + controlX = current[1]; + controlY = current[2]; + x = current[3]; + y = current[4]; + break; + case 't': // shorthand quadraticCurveTo, relative + current[0] = 'T'; + current[1] += x; + current[2] += y; + // falls through + case 'T': + if (previous === 'Q') { + // calculate reflection of previous control point + controlX = 2 * x - controlX; + controlY = 2 * y - controlY; + } + else { + // If there is no previous command or if the previous command was not a Q, q, T or t, + // assume the control point is coincident with the current point + controlX = x; + controlY = y; + } + current[0] = 'Q'; + x = current[1]; + y = current[2]; + current[1] = controlX; + current[2] = controlY; + current[3] = x; + current[4] = y; + break; + case 'a': + current[0] = 'A'; + current[6] += x; + current[7] += y; + // falls through + case 'A': + converted = true; + destinationPath = destinationPath.concat(fromArcToBeziers(x, y, current)); + x = current[6]; + y = current[7]; + break; + case 'z': + case 'Z': + x = x1; + y = y1; + break; + default: + } + if (!converted) { + destinationPath.push(current); + } + previous = current[0]; } return destinationPath; -}; -// todo verify if we can just use the point class here -/** - * Calc length from point x1,y1 to x2,y2 - * @param {Number} x1 starting point x - * @param {Number} y1 starting point y - * @param {Number} x2 starting point x - * @param {Number} y2 starting point y - * @return {Number} length of segment - */ -const calcLineLength = (x1, y1, x2, y2) => Math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2); -const getPointOnCubicBezierIterator = (p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) => (pct) => { - const c1 = CB1(pct), c2 = CB2(pct), c3 = CB3(pct), c4 = CB4(pct); - return { + }; + + /** + * Calc length from point x1,y1 to x2,y2 + * @param {Number} x1 starting point x + * @param {Number} y1 starting point y + * @param {Number} x2 starting point x + * @param {Number} y2 starting point y + * @return {Number} length of segment + */ + function calcLineLength(x1, y1, x2, y2) { + return Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1)); + } + + // functions for the Cubic beizer + // taken from: https://github.com/konvajs/konva/blob/7.0.5/src/shapes/Path.ts#L350 + function CB1(t) { + return t * t * t; + } + function CB2(t) { + return 3 * t * t * (1 - t); + } + function CB3(t) { + return 3 * t * (1 - t) * (1 - t); + } + function CB4(t) { + return (1 - t) * (1 - t) * (1 - t); + } + + function getPointOnCubicBezierIterator(p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) { + return function(pct) { + var c1 = CB1(pct), c2 = CB2(pct), c3 = CB3(pct), c4 = CB4(pct); + return { x: p4x * c1 + p3x * c2 + p2x * c3 + p1x * c4, - y: p4y * c1 + p3y * c2 + p2y * c3 + p1y * c4, + y: p4y * c1 + p3y * c2 + p2y * c3 + p1y * c4 + }; }; -}; -const QB1 = (t) => t ** 2; -const QB2 = (t) => 2 * t * (1 - t); -const QB3 = (t) => (1 - t) ** 2; -const getTangentCubicIterator = (p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) => (pct) => { - const qb1 = QB1(pct), qb2 = QB2(pct), qb3 = QB3(pct), tangentX = 3 * (qb3 * (p2x - p1x) + qb2 * (p3x - p2x) + qb1 * (p4x - p3x)), tangentY = 3 * (qb3 * (p2y - p1y) + qb2 * (p3y - p2y) + qb1 * (p4y - p3y)); - return Math.atan2(tangentY, tangentX); -}; -const getPointOnQuadraticBezierIterator = (p1x, p1y, p2x, p2y, p3x, p3y) => (pct) => { - const c1 = QB1(pct), c2 = QB2(pct), c3 = QB3(pct); - return { - x: p3x * c1 + p2x * c2 + p1x * c3, - y: p3y * c1 + p2y * c2 + p1y * c3, + } + + function getTangentCubicIterator(p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) { + return function (pct) { + var invT = 1 - pct, + tangentX = (3 * invT * invT * (p2x - p1x)) + (6 * invT * pct * (p3x - p2x)) + + (3 * pct * pct * (p4x - p3x)), + tangentY = (3 * invT * invT * (p2y - p1y)) + (6 * invT * pct * (p3y - p2y)) + + (3 * pct * pct * (p4y - p3y)); + return Math.atan2(tangentY, tangentX); }; -}; -const getTangentQuadraticIterator = (p1x, p1y, p2x, p2y, p3x, p3y) => (pct) => { - const invT = 1 - pct, tangentX = 2 * (invT * (p2x - p1x) + pct * (p3x - p2x)), tangentY = 2 * (invT * (p2y - p1y) + pct * (p3y - p2y)); - return Math.atan2(tangentY, tangentX); -}; -// this will run over a path segment ( a cubic or quadratic segment) and approximate it -// with 100 segemnts. This will good enough to calculate the length of the curve -const pathIterator = (iterator, x1, y1) => { - let tempP = { x: x1, y: y1 }, tmpLen = 0; - for (let perc = 1; perc <= 100; perc += 1) { - const p = iterator(perc / 100); - tmpLen += calcLineLength(tempP.x, tempP.y, p.x, p.y); - tempP = p; + } + + function QB1(t) { + return t * t; + } + + function QB2(t) { + return 2 * t * (1 - t); + } + + function QB3(t) { + return (1 - t) * (1 - t); + } + + function getPointOnQuadraticBezierIterator(p1x, p1y, p2x, p2y, p3x, p3y) { + return function(pct) { + var c1 = QB1(pct), c2 = QB2(pct), c3 = QB3(pct); + return { + x: p3x * c1 + p2x * c2 + p1x * c3, + y: p3y * c1 + p2y * c2 + p1y * c3 + }; + }; + } + + function getTangentQuadraticIterator(p1x, p1y, p2x, p2y, p3x, p3y) { + return function (pct) { + var invT = 1 - pct, + tangentX = (2 * invT * (p2x - p1x)) + (2 * pct * (p3x - p2x)), + tangentY = (2 * invT * (p2y - p1y)) + (2 * pct * (p3y - p2y)); + return Math.atan2(tangentY, tangentX); + }; + } + + + // this will run over a path segment ( a cubic or quadratic segment) and approximate it + // with 100 segemnts. This will good enough to calculate the length of the curve + function pathIterator(iterator, x1, y1) { + var tempP = { x: x1, y: y1 }, p, tmpLen = 0, perc; + for (perc = 1; perc <= 100; perc += 1) { + p = iterator(perc / 100); + tmpLen += calcLineLength(tempP.x, tempP.y, p.x, p.y); + tempP = p; } return tmpLen; -}; -/** - * Given a pathInfo, and a distance in pixels, find the percentage from 0 to 1 - * that correspond to that pixels run over the path. - * The percentage will be then used to find the correct point on the canvas for the path. - * @param {Array} segInfo fabricJS collection of information on a parsed path - * @param {Number} distance from starting point, in pixels. - * @return {Object} info object with x and y ( the point on canvas ) and angle, the tangent on that point; - */ -const findPercentageForDistance = (segInfo, distance) => { - let perc = 0, tmpLen = 0, tempP = { x: segInfo.x, y: segInfo.y }, p, nextLen, nextStep = 0.01, lastPerc; + } + + /** + * Given a pathInfo, and a distance in pixels, find the percentage from 0 to 1 + * that correspond to that pixels run over the path. + * The percentage will be then used to find the correct point on the canvas for the path. + * @param {Array} segInfo fabricJS collection of information on a parsed path + * @param {Number} distance from starting point, in pixels. + * @return {Object} info object with x and y ( the point on canvas ) and angle, the tangent on that point; + */ + function findPercentageForDistance(segInfo, distance) { + var perc = 0, tmpLen = 0, iterator = segInfo.iterator, tempP = { x: segInfo.x, y: segInfo.y }, + p, nextLen, nextStep = 0.01, angleFinder = segInfo.angleFinder, lastPerc; // nextStep > 0.0001 covers 0.00015625 that 1/64th of 1/100 // the path - const iterator = segInfo.iterator, angleFinder = segInfo.angleFinder; while (tmpLen < distance && nextStep > 0.0001) { - p = iterator(perc); - lastPerc = perc; - nextLen = calcLineLength(tempP.x, tempP.y, p.x, p.y); - // compare tmpLen each cycle with distance, decide next perc to test. - if (nextLen + tmpLen > distance) { - // we discard this step and we make smaller steps. - perc -= nextStep; - nextStep /= 2; - } - else { - tempP = p; - perc += nextStep; - tmpLen += nextLen; - } + p = iterator(perc); + lastPerc = perc; + nextLen = calcLineLength(tempP.x, tempP.y, p.x, p.y); + // compare tmpLen each cycle with distance, decide next perc to test. + if ((nextLen + tmpLen) > distance) { + // we discard this step and we make smaller steps. + perc -= nextStep; + nextStep /= 2; + } + else { + tempP = p; + perc += nextStep; + tmpLen += nextLen; + } } p.angle = angleFinder(lastPerc); return p; -}; -/** - * Run over a parsed and simplifed path and extract some informations. - * informations are length of each command and starting point - * @param {Array} path fabricJS parsed path commands - * @return {Array} path commands informations - */ -const getPathSegmentsInfo = (path) => { - let totalLength = 0, current, - //x2 and y2 are the coords of segment start - //x1 and y1 are the coords of the current point - x1 = 0, y1 = 0, x2 = 0, y2 = 0, iterator, tempInfo, angleFinder; - const len = path.length, info = []; - for (let i = 0; i < len; i++) { - current = path[i]; - tempInfo = { - x: x1, - y: y1, - command: current[0], - }; - switch (current[0] //first letter - ) { - case 'M': - tempInfo.length = 0; - x2 = x1 = current[1]; - y2 = y1 = current[2]; - break; - case 'L': - tempInfo.length = calcLineLength(x1, y1, current[1], current[2]); - x1 = current[1]; - y1 = current[2]; - break; - case 'C': - iterator = getPointOnCubicBezierIterator(x1, y1, current[1], current[2], current[3], current[4], current[5], current[6]); - angleFinder = getTangentCubicIterator(x1, y1, current[1], current[2], current[3], current[4], current[5], current[6]); - tempInfo.iterator = iterator; - tempInfo.angleFinder = angleFinder; - tempInfo.length = pathIterator(iterator, x1, y1); - x1 = current[5]; - y1 = current[6]; - break; - case 'Q': - iterator = getPointOnQuadraticBezierIterator(x1, y1, current[1], current[2], current[3], current[4]); - angleFinder = getTangentQuadraticIterator(x1, y1, current[1], current[2], current[3], current[4]); - tempInfo.iterator = iterator; - tempInfo.angleFinder = angleFinder; - tempInfo.length = pathIterator(iterator, x1, y1); - x1 = current[3]; - y1 = current[4]; - break; - case 'Z': - case 'z': - // we add those in order to ease calculations later - tempInfo.destX = x2; - tempInfo.destY = y2; - tempInfo.length = calcLineLength(x1, y1, x2, y2); - x1 = x2; - y1 = y2; - break; - } - totalLength += tempInfo.length; - info.push(tempInfo); + } + + /** + * Run over a parsed and simplifed path and extrac some informations. + * informations are length of each command and starting point + * @param {Array} path fabricJS parsed path commands + * @return {Array} path commands informations + */ + function getPathSegmentsInfo(path) { + var totalLength = 0, len = path.length, current, + //x2 and y2 are the coords of segment start + //x1 and y1 are the coords of the current point + x1 = 0, y1 = 0, x2 = 0, y2 = 0, info = [], iterator, tempInfo, angleFinder; + for (var i = 0; i < len; i++) { + current = path[i]; + tempInfo = { + x: x1, + y: y1, + command: current[0], + }; + switch (current[0]) { //first letter + case 'M': + tempInfo.length = 0; + x2 = x1 = current[1]; + y2 = y1 = current[2]; + break; + case 'L': + tempInfo.length = calcLineLength(x1, y1, current[1], current[2]); + x1 = current[1]; + y1 = current[2]; + break; + case 'C': + iterator = getPointOnCubicBezierIterator( + x1, + y1, + current[1], + current[2], + current[3], + current[4], + current[5], + current[6] + ); + angleFinder = getTangentCubicIterator( + x1, + y1, + current[1], + current[2], + current[3], + current[4], + current[5], + current[6] + ); + tempInfo.iterator = iterator; + tempInfo.angleFinder = angleFinder; + tempInfo.length = pathIterator(iterator, x1, y1); + x1 = current[5]; + y1 = current[6]; + break; + case 'Q': + iterator = getPointOnQuadraticBezierIterator( + x1, + y1, + current[1], + current[2], + current[3], + current[4] + ); + angleFinder = getTangentQuadraticIterator( + x1, + y1, + current[1], + current[2], + current[3], + current[4] + ); + tempInfo.iterator = iterator; + tempInfo.angleFinder = angleFinder; + tempInfo.length = pathIterator(iterator, x1, y1); + x1 = current[3]; + y1 = current[4]; + break; + case 'Z': + case 'z': + // we add those in order to ease calculations later + tempInfo.destX = x2; + tempInfo.destY = y2; + tempInfo.length = calcLineLength(x1, y1, x2, y2); + x1 = x2; + y1 = y2; + break; + } + totalLength += tempInfo.length; + info.push(tempInfo); } info.push({ length: totalLength, x: x1, y: y1 }); return info; -}; -const getPointOnPath = (path, distance, infos) => { + } + + function getPointOnPath(path, distance, infos) { if (!infos) { - infos = getPathSegmentsInfo(path); + infos = getPathSegmentsInfo(path); } - let i = 0; - while (distance - infos[i].length > 0 && i < infos.length - 2) { - distance -= infos[i].length; - i++; + var i = 0; + while ((distance - infos[i].length > 0) && i < (infos.length - 2)) { + distance -= infos[i].length; + i++; } // var distance = infos[infos.length - 1] * perc; - const segInfo = infos[i], segPercent = distance / segInfo.length, command = segInfo.command, segment = path[i]; - let info; + var segInfo = infos[i], segPercent = distance / segInfo.length, + command = segInfo.command, segment = path[i], info; + switch (command) { - case 'M': - return { x: segInfo.x, y: segInfo.y, angle: 0 }; - case 'Z': - case 'z': - info = new Point(segInfo.x, segInfo.y).lerp(new Point(segInfo.destX, segInfo.destY), segPercent); - info.angle = Math.atan2(segInfo.destY - segInfo.y, segInfo.destX - segInfo.x); - return info; - case 'L': - info = new Point(segInfo.x, segInfo.y).lerp(new Point(segment[1], segment[2]), segPercent); - info.angle = Math.atan2(segment[2] - segInfo.y, segment[1] - segInfo.x); - return info; - case 'C': - return findPercentageForDistance(segInfo, distance); - case 'Q': - return findPercentageForDistance(segInfo, distance); - } -}; -/** - * - * @param {string} pathString - * @return {(string|number)[][]} An array of SVG path commands - * @example Usage - * parsePath('M 3 4 Q 3 5 2 1 4 0 Q 9 12 2 1 4 0') === [ - * ['M', 3, 4], - * ['Q', 3, 5, 2, 1, 4, 0], - * ['Q', 9, 12, 2, 1, 4, 0], - * ]; - * - */ -const parsePath = (pathString) => { - // one of commands (m,M,l,L,q,Q,c,C,etc.) followed by non-command characters (i.e. command values) - const re = rePathCommand, rNumber = '[-+]?(?:\\d*\\.\\d+|\\d+\\.?)(?:[eE][-+]?\\d+)?\\s*', rNumberCommaWsp = `(${rNumber})${commaWsp}`, rFlagCommaWsp = `([01])${commaWsp}?`, rArcSeq = `${rNumberCommaWsp}?${rNumberCommaWsp}?${rNumberCommaWsp}${rFlagCommaWsp}${rFlagCommaWsp}${rNumberCommaWsp}?(${rNumber})`, regArcArgumentSequence = new RegExp(rArcSeq, 'g'), result = []; + case 'M': + return { x: segInfo.x, y: segInfo.y, angle: 0 }; + case 'Z': + case 'z': + info = new fabric.Point(segInfo.x, segInfo.y).lerp( + new fabric.Point(segInfo.destX, segInfo.destY), + segPercent + ); + info.angle = Math.atan2(segInfo.destY - segInfo.y, segInfo.destX - segInfo.x); + return info; + case 'L': + info = new fabric.Point(segInfo.x, segInfo.y).lerp( + new fabric.Point(segment[1], segment[2]), + segPercent + ); + info.angle = Math.atan2(segment[2] - segInfo.y, segment[1] - segInfo.x); + return info; + case 'C': + return findPercentageForDistance(segInfo, distance); + case 'Q': + return findPercentageForDistance(segInfo, distance); + } + } + + /** + * + * @param {string} pathString + * @return {(string|number)[][]} An array of SVG path commands + * @example Usage + * parsePath('M 3 4 Q 3 5 2 1 4 0 Q 9 12 2 1 4 0') === [ + * ['M', 3, 4], + * ['Q', 3, 5, 2, 1, 4, 0], + * ['Q', 9, 12, 2, 1, 4, 0], + * ]; + * + */ + function parsePath(pathString) { + var result = [], + coords = [], + currentPath, + parsed, + re = fabric.rePathCommand, + rNumber = '[-+]?(?:\\d*\\.\\d+|\\d+\\.?)(?:[eE][-+]?\\d+)?\\s*', + rNumberCommaWsp = '(' + rNumber + ')' + fabric.commaWsp, + rFlagCommaWsp = '([01])' + fabric.commaWsp + '?', + rArcSeq = rNumberCommaWsp + '?' + rNumberCommaWsp + '?' + rNumberCommaWsp + rFlagCommaWsp + rFlagCommaWsp + + rNumberCommaWsp + '?(' + rNumber + ')', + regArcArgumentSequence = new RegExp(rArcSeq, 'g'), + match, + coordsStr, + // one of commands (m,M,l,L,q,Q,c,C,etc.) followed by non-command characters (i.e. command values) + path; if (!pathString || !pathString.match) { - return result; - } - const path = pathString.match(/[mzlhvcsqta][^mzlhvcsqta]*/gi); - for (let i = 0, len = path.length; i < len; i++) { - const currentPath = path[i]; - const coordsStr = currentPath.slice(1).trim(); - const coords = []; - let command = currentPath.charAt(0); - const coordsParsed = [command]; - if (command.toLowerCase() === 'a') { - // arcs have special flags that apparently don't require spaces so handle special - for (let args; (args = regArcArgumentSequence.exec(coordsStr));) { - for (let j = 1; j < args.length; j++) { - coords.push(args[j]); - } - } - } - else { - let match; - while ((match = re.exec(coordsStr))) { - coords.push(match[0]); - } + return result; + } + path = pathString.match(/[mzlhvcsqta][^mzlhvcsqta]*/gi); + + for (var i = 0, coordsParsed, len = path.length; i < len; i++) { + currentPath = path[i]; + + coordsStr = currentPath.slice(1).trim(); + coords.length = 0; + + var command = currentPath.charAt(0); + coordsParsed = [command]; + + if (command.toLowerCase() === 'a') { + // arcs have special flags that apparently don't require spaces so handle special + for (var args; (args = regArcArgumentSequence.exec(coordsStr));) { + for (var j = 1; j < args.length; j++) { + coords.push(args[j]); + } } - for (let j = 0, jlen = coords.length; j < jlen; j++) { - const parsed = parseFloat(coords[j]); - if (!isNaN(parsed)) { - coordsParsed.push(parsed); - } + } + else { + while ((match = re.exec(coordsStr))) { + coords.push(match[0]); } - const commandLength = commandLengths[command.toLowerCase()], repeatedCommand = repeatedCommands[command] || command; - if (coordsParsed.length - 1 > commandLength) { - for (let k = 1, klen = coordsParsed.length; k < klen; k += commandLength) { - result.push([command].concat(coordsParsed.slice(k, k + commandLength))); - command = repeatedCommand; - } + } + + for (var j = 0, jlen = coords.length; j < jlen; j++) { + parsed = parseFloat(coords[j]); + if (!isNaN(parsed)) { + coordsParsed.push(parsed); } - else { - result.push(coordsParsed); + } + + var commandLength = commandLengths[command.toLowerCase()], + repeatedCommand = repeatedCommands[command] || command; + + if (coordsParsed.length - 1 > commandLength) { + for (var k = 1, klen = coordsParsed.length; k < klen; k += commandLength) { + result.push([command].concat(coordsParsed.slice(k, k + commandLength))); + command = repeatedCommand; } + } + else { + result.push(coordsParsed); + } } + return result; -}; -/** - * - * Converts points to a smooth SVG path - * @param {{ x: number,y: number }[]} points Array of points - * @param {number} [correction] Apply a correction to the path (usually we use `width / 1000`). If value is undefined 0 is used as the correction value. - * @return {(string|number)[][]} An array of SVG path commands - */ -const getSmoothPathFromPoints = (points, correction = 0) => { - let p1 = new Point(points[0]), p2 = new Point(points[1]), multSignX = 1, multSignY = 0; - const path = [], len = points.length, manyPoints = len > 2; + }; + + /** + * + * Converts points to a smooth SVG path + * @param {{ x: number,y: number }[]} points Array of points + * @param {number} [correction] Apply a correction to the path (usually we use `width / 1000`). If value is undefined 0 is used as the correction value. + * @return {(string|number)[][]} An array of SVG path commands + */ + function getSmoothPathFromPoints(points, correction) { + var path = [], i, + p1 = new fabric.Point(points[0].x, points[0].y), + p2 = new fabric.Point(points[1].x, points[1].y), + len = points.length, multSignX = 1, multSignY = 0, manyPoints = len > 2; + correction = correction || 0; + if (manyPoints) { - multSignX = points[2].x < p2.x ? -1 : points[2].x === p2.x ? 0 : 1; - multSignY = points[2].y < p2.y ? -1 : points[2].y === p2.y ? 0 : 1; - } - path.push([ - 'M', - p1.x - multSignX * correction, - p1.y - multSignY * correction, - ]); - let i; + multSignX = points[2].x < p2.x ? -1 : points[2].x === p2.x ? 0 : 1; + multSignY = points[2].y < p2.y ? -1 : points[2].y === p2.y ? 0 : 1; + } + path.push(['M', p1.x - multSignX * correction, p1.y - multSignY * correction]); for (i = 1; i < len; i++) { - if (!p1.eq(p2)) { - const midPoint = p1.midPointFrom(p2); - // p1 is our bezier control point - // midpoint is our endpoint - // start point is p(i-1) value. - path.push(['Q', p1.x, p1.y, midPoint.x, midPoint.y]); - } - p1 = points[i]; - if (i + 1 < points.length) { - p2 = points[i + 1]; - } + if (!p1.eq(p2)) { + var midPoint = p1.midPointFrom(p2); + // p1 is our bezier control point + // midpoint is our endpoint + // start point is p(i-1) value. + path.push(['Q', p1.x, p1.y, midPoint.x, midPoint.y]); + } + p1 = points[i]; + if ((i + 1) < points.length) { + p2 = points[i + 1]; + } } if (manyPoints) { - multSignX = p1.x > points[i - 2].x ? 1 : p1.x === points[i - 2].x ? 0 : -1; - multSignY = p1.y > points[i - 2].y ? 1 : p1.y === points[i - 2].y ? 0 : -1; - } - path.push([ - 'L', - p1.x + multSignX * correction, - p1.y + multSignY * correction, - ]); + multSignX = p1.x > points[i - 2].x ? 1 : p1.x === points[i - 2].x ? 0 : -1; + multSignY = p1.y > points[i - 2].y ? 1 : p1.y === points[i - 2].y ? 0 : -1; + } + path.push(['L', p1.x + multSignX * correction, p1.y + multSignY * correction]); return path; -}; -/** - * Transform a path by transforming each segment. - * it has to be a simplified path or it won't work. - * WARNING: this depends from pathOffset for correct operation - * @param {Array} path fabricJS parsed and simplified path commands - * @param {Array} transform matrix that represent the transformation - * @param {Object} [pathOffset] the fabric.Path pathOffset - * @param {Number} pathOffset.x - * @param {Number} pathOffset.y - * @returns {Array} the transformed path - */ -const transformPath = (path, transform, pathOffset) => { + } + /** + * Transform a path by transforming each segment. + * it has to be a simplified path or it won't work. + * WARNING: this depends from pathOffset for correct operation + * @param {Array} path fabricJS parsed and simplified path commands + * @param {Array} transform matrix that represent the transformation + * @param {Object} [pathOffset] the fabric.Path pathOffset + * @param {Number} pathOffset.x + * @param {Number} pathOffset.y + * @returns {Array} the transformed path + */ + function transformPath(path, transform, pathOffset) { if (pathOffset) { - transform = multiplyTransformMatrices(transform, [ - 1, - 0, - 0, - 1, - -pathOffset.x, - -pathOffset.y, - ]); - } - return path.map((pathSegment) => { - const newSegment = pathSegment.slice(0); - for (let i = 1; i < pathSegment.length - 1; i += 2) { - const { x, y } = transformPoint({ - x: pathSegment[i], - y: pathSegment[i + 1], - }, transform); - newSegment[i] = x; - newSegment[i + 1] = y; - } - return newSegment; + transform = fabric.util.multiplyTransformMatrices( + transform, + [1, 0, 0, 1, -pathOffset.x, -pathOffset.y] + ); + } + return path.map(function(pathSegment) { + var newSegment = pathSegment.slice(0), point = {}; + for (var i = 1; i < pathSegment.length - 1; i += 2) { + point.x = pathSegment[i]; + point.y = pathSegment[i + 1]; + point = fabric.util.transformPoint(point, transform); + newSegment[i] = point.x; + newSegment[i + 1] = point.y; + } + return newSegment; }); -}; -/** - * Returns an array of path commands to create a regular polygon - * @param {number} radius - * @param {number} numVertexes - * @returns {(string|number)[][]} An array of SVG path commands - */ -const getRegularPolygonPath = (numVertexes, radius) => { - const interiorAngle = (Math.PI * 2) / numVertexes; - // rotationAdjustment rotates the path by 1/2 the interior angle so that the polygon always has a flat side on the bottom - // This isn't strictly necessary, but it's how we tend to think of and expect polygons to be drawn - let rotationAdjustment = -halfPI; - if (numVertexes % 2 === 0) { - rotationAdjustment += interiorAngle / 2; - } - const d = new Array(numVertexes + 1); - for (let i = 0; i < numVertexes; i++) { - const rad = i * interiorAngle + rotationAdjustment; - const { x, y } = new Point(cos(rad), sin(rad)).scalarMultiply(radius); - d[i] = [i === 0 ? 'M' : 'L', x, y]; - } - d[numVertexes] = ['Z']; - return d; -}; -/** - * Join path commands to go back to svg format - * @param {Array} pathData fabricJS parsed path commands - * @return {String} joined path 'M 0 0 L 20 30' - */ -const joinPath = (pathData) => pathData.map((segment) => segment.join(' ')).join(' '); + } -//@ts-nocheck -// TODO this file needs to go away, cross browser style support is not fabricjs domain. -/** - * wrapper for setting element's style - * @memberOf fabric.util - * @param {HTMLElement} element - * @param {Object | string} styles - */ -function setStyle(element, styles) { - const elementStyle = element.style; - if (!elementStyle) { - return; - } - else if (typeof styles === 'string') { - element.style.cssText += ';' + styles; - } - else { - Object.entries(styles).forEach(([property, value]) => elementStyle.setProperty(property, value)); + /** + * Join path commands to go back to svg format + * @param {Array} pathData fabricJS parsed path commands + * @return {String} joined path 'M 0 0 L 20 30' + */ + fabric.util.joinPath = function(pathData) { + return pathData.map(function (segment) { return segment.join(' '); }).join(' '); + }; + fabric.util.parsePath = parsePath; + fabric.util.makePathSimpler = makePathSimpler; + fabric.util.getSmoothPathFromPoints = getSmoothPathFromPoints; + fabric.util.getPathSegmentsInfo = getPathSegmentsInfo; + fabric.util.getBoundsOfCurve = getBoundsOfCurve; + fabric.util.getPointOnPath = getPointOnPath; + fabric.util.transformPath = transformPath; +})(); + + +(function() { + + var slice = Array.prototype.slice; + + /** + * Invokes method on all items in a given array + * @memberOf fabric.util.array + * @param {Array} array Array to iterate over + * @param {String} method Name of a method to invoke + * @return {Array} + */ + function invoke(array, method) { + var args = slice.call(arguments, 2), result = []; + for (var i = 0, len = array.length; i < len; i++) { + result[i] = args.length ? array[i][method].apply(array[i], args) : array[i][method].call(array[i]); } -} + return result; + } -//@ts-nocheck -/** - * Cross-browser abstraction for sending XMLHttpRequest - * @memberOf fabric.util - * @deprecated this has to go away, we can use a modern browser method to do the same. - * @param {String} url URL to send XMLHttpRequest to - * @param {Object} [options] Options object - * @param {String} [options.method="GET"] - * @param {Record} [options.parameters] parameters to append to url in GET or in body - * @param {String} [options.body] body to send with POST or PUT request - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @param {Function} options.onComplete Callback to invoke when request is completed - * @return {XMLHttpRequest} request - */ -function request(url, options = {}) { - const method = options.method ? options.method.toUpperCase() : 'GET', onComplete = options.onComplete || noop, xhr = new fabric.window.XMLHttpRequest(), body = options.body || options.parameters, signal = options.signal, abort = function () { - xhr.abort(); - }, removeListener = function () { - signal && signal.removeEventListener('abort', abort); - xhr.onerror = xhr.ontimeout = noop; - }; - if (signal && signal.aborted) { - throw new Error('`options.signal` is in `aborted` state'); + /** + * Finds maximum value in array (not necessarily "first" one) + * @memberOf fabric.util.array + * @param {Array} array Array to iterate over + * @param {String} byProperty + * @return {*} + */ + function max(array, byProperty) { + return find(array, byProperty, function(value1, value2) { + return value1 >= value2; + }); + } + + /** + * Finds minimum value in array (not necessarily "first" one) + * @memberOf fabric.util.array + * @param {Array} array Array to iterate over + * @param {String} byProperty + * @return {*} + */ + function min(array, byProperty) { + return find(array, byProperty, function(value1, value2) { + return value1 < value2; + }); + } + + /** + * @private + */ + function fill(array, value) { + var k = array.length; + while (k--) { + array[k] = value; } - else if (signal) { - signal.addEventListener('abort', abort, { once: true }); + return array; + } + + /** + * @private + */ + function find(array, byProperty, condition) { + if (!array || array.length === 0) { + return; } - /** @ignore */ - xhr.onreadystatechange = function () { - if (xhr.readyState === 4) { - removeListener(); - onComplete(xhr); - xhr.onreadystatechange = noop; + + var i = array.length - 1, + result = byProperty ? array[i][byProperty] : array[i]; + if (byProperty) { + while (i--) { + if (condition(array[i][byProperty], result)) { + result = array[i][byProperty]; } - }; - xhr.onerror = xhr.ontimeout = removeListener; - if (method === 'GET' && options.parameters) { - const { origin, pathname, searchParams } = new URL(url); - url = `${origin}${pathname}?${new URLSearchParams([ - ...Array.from(searchParams.entries()), - ...Object.entries(options.parameters), - ])}`; + } } - xhr.open(method, url, true); - if (method === 'POST' || method === 'PUT') { - xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); + else { + while (i--) { + if (condition(array[i], result)) { + result = array[i]; + } + } } - xhr.send(method === 'GET' ? null : body); - return xhr; -} + return result; + } -//@ts-nocheck -const touchEvents = ['touchstart', 'touchmove', 'touchend']; -/** - * Adds an event listener to an element - * @function - * @deprecated - * @memberOf fabric.util - * @param {HTMLElement} element - * @param {String} eventName - * @param {Function} handler - */ -const addListener = (element, eventName, handler, options) => element && element.addEventListener(eventName, handler, options); -/** - * Removes an event listener from an element - * @function - * @deprecated - * @memberOf fabric.util - * @param {HTMLElement} element - * @param {String} eventName - * @param {Function} handler - */ -const removeListener = (element, eventName, handler, options) => element && element.removeEventListener(eventName, handler, options); -function getTouchInfo(event) { - const touchProp = event.changedTouches; - if (touchProp && touchProp[0]) { - return touchProp[0]; - } - return event; -} -const getPointer = (event) => { - const element = event.target, scroll = fabric.util.getScrollLeftTop(element), _evt = getTouchInfo(event); - return new Point(_evt.clientX + scroll.left, _evt.clientY + scroll.top); -}; -const isTouchEvent = (event) => touchEvents.indexOf(event.type) > -1 || event.pointerType === 'touch'; + /** + * @namespace fabric.util.array + */ + fabric.util.array = { + fill: fill, + invoke: invoke, + min: min, + max: max + }; -//@ts-nocheck -/** - * Wraps element with another element - * @memberOf fabric.util - * @param {HTMLElement} element Element to wrap - * @param {HTMLElement|String} wrapper Element to wrap with - * @param {Object} [attributes] Attributes to set on a wrapper - * @return {HTMLElement} wrapper - */ -function wrapElement(element, wrapper) { - if (element.parentNode) { - element.parentNode.replaceChild(wrapper, element); - } - wrapper.appendChild(element); - return wrapper; -} -/** - * Returns element scroll offsets - * @memberOf fabric.util - * @param {HTMLElement} element Element to operate on - * @return {Object} Object with left/top values - */ -function getScrollLeftTop(element) { - let left = 0, top = 0; - const docElement = fabric$1.document.documentElement, body = fabric$1.document.body || { - scrollLeft: 0, - scrollTop: 0, - }; - // While loop checks (and then sets element to) .parentNode OR .host - // to account for ShadowDOM. We still want to traverse up out of ShadowDOM, - // but the .parentNode of a root ShadowDOM node will always be null, instead - // it should be accessed through .host. See http://stackoverflow.com/a/24765528/4383938 - while (element && (element.parentNode || element.host)) { - // Set element to element parent, or 'host' in case of ShadowDOM - element = element.parentNode || element.host; - if (element === fabric$1.document) { - left = body.scrollLeft || docElement.scrollLeft || 0; - top = body.scrollTop || docElement.scrollTop || 0; - } - else { - left += element.scrollLeft || 0; - top += element.scrollTop || 0; +})(); + + +(function() { + /** + * Copies all enumerable properties of one js object to another + * this does not and cannot compete with generic utils. + * Does not clone or extend fabric.Object subclasses. + * This is mostly for internal use and has extra handling for fabricJS objects + * it skips the canvas and group properties in deep cloning. + * @memberOf fabric.util.object + * @param {Object} destination Where to copy to + * @param {Object} source Where to copy from + * @param {Boolean} [deep] Whether to extend nested objects + * @return {Object} + */ + + function extend(destination, source, deep) { + // JScript DontEnum bug is not taken care of + // the deep clone is for internal use, is not meant to avoid + // javascript traps or cloning html element or self referenced objects. + if (deep) { + if (!fabric.isLikelyNode && source instanceof Element) { + // avoid cloning deep images, canvases, + destination = source; + } + else if (source instanceof Array) { + destination = []; + for (var i = 0, len = source.length; i < len; i++) { + destination[i] = extend({ }, source[i], deep); } - if (element.nodeType === 1 && element.style.position === 'fixed') { - break; + } + else if (source && typeof source === 'object') { + for (var property in source) { + if (property === 'canvas' || property === 'group') { + // we do not want to clone this props at all. + // we want to keep the keys in the copy + destination[property] = null; + } + else if (source.hasOwnProperty(property)) { + destination[property] = extend({ }, source[property], deep); + } } + } + else { + // this sounds odd for an extend but is ok for recursive use + destination = source; + } } - return { left, top }; -} -/** - * Returns offset for a given element - * @function - * @memberOf fabric.util - * @param {HTMLElement} element Element to get offset for - * @return {Object} Object with "left" and "top" properties - */ -function getElementOffset(element) { - let box = { left: 0, top: 0 }; - const doc = element && element.ownerDocument, offset = { left: 0, top: 0 }, offsetAttributes = { - borderLeftWidth: 'left', - borderTopWidth: 'top', - paddingLeft: 'left', - paddingTop: 'top', - }; - if (!doc) { - return offset; + else { + for (var property in source) { + destination[property] = source[property]; + } } - const elemStyle = fabric$1.document.defaultView.getComputedStyle(element, null); - for (const attr in offsetAttributes) { - offset[offsetAttributes[attr]] += parseInt(elemStyle[attr], 10) || 0; + return destination; + } + + /** + * Creates an empty object and copies all enumerable properties of another object to it + * This method is mostly for internal use, and not intended for duplicating shapes in canvas. + * @memberOf fabric.util.object + * @param {Object} object Object to clone + * @param {Boolean} [deep] Whether to clone nested objects + * @return {Object} + */ + + //TODO: this function return an empty object if you try to clone null + function clone(object, deep) { + return extend({ }, object, deep); + } + + /** @namespace fabric.util.object */ + fabric.util.object = { + extend: extend, + clone: clone + }; + fabric.util.object.extend(fabric.util, fabric.Observable); +})(); + + +(function() { + + /** + * Camelizes a string + * @memberOf fabric.util.string + * @param {String} string String to camelize + * @return {String} Camelized version of a string + */ + function camelize(string) { + return string.replace(/-+(.)?/g, function(match, character) { + return character ? character.toUpperCase() : ''; + }); + } + + /** + * Capitalizes a string + * @memberOf fabric.util.string + * @param {String} string String to capitalize + * @param {Boolean} [firstLetterOnly] If true only first letter is capitalized + * and other letters stay untouched, if false first letter is capitalized + * and other letters are converted to lowercase. + * @return {String} Capitalized version of a string + */ + function capitalize(string, firstLetterOnly) { + return string.charAt(0).toUpperCase() + + (firstLetterOnly ? string.slice(1) : string.slice(1).toLowerCase()); + } + + /** + * Escapes XML in a string + * @memberOf fabric.util.string + * @param {String} string String to escape + * @return {String} Escaped version of a string + */ + function escapeXml(string) { + return string.replace(/&/g, '&') + .replace(/"/g, '"') + .replace(/'/g, ''') + .replace(//g, '>'); + } + + /** + * Divide a string in the user perceived single units + * @memberOf fabric.util.string + * @param {String} textstring String to escape + * @return {Array} array containing the graphemes + */ + function graphemeSplit(textstring) { + var i = 0, chr, graphemes = []; + for (i = 0, chr; i < textstring.length; i++) { + if ((chr = getWholeChar(textstring, i)) === false) { + continue; + } + graphemes.push(chr); } - const docElem = doc.documentElement; - if (typeof element.getBoundingClientRect !== 'undefined') { - box = element.getBoundingClientRect(); + return graphemes; + } + + // taken from mdn in the charAt doc page. + function getWholeChar(str, i) { + var code = str.charCodeAt(i); + + if (isNaN(code)) { + return ''; // Position not found } - const scrollLeftTop = getScrollLeftTop(element); - return { - left: box.left + scrollLeftTop.left - (docElem.clientLeft || 0) + offset.left, - top: box.top + scrollLeftTop.top - (docElem.clientTop || 0) + offset.top, - }; -} -/** - * Makes element unselectable - * @memberOf fabric.util - * @param {HTMLElement} element Element to make unselectable - * @return {HTMLElement} Element that was passed in - */ -function makeElementUnselectable(element) { - if (typeof element.onselectstart !== 'undefined') { - element.onselectstart = () => false; + if (code < 0xD800 || code > 0xDFFF) { + return str.charAt(i); } - element.style.userSelect = 'none'; - return element; -} -/** - * Makes element selectable - * @memberOf fabric.util - * @param {HTMLElement} element Element to make selectable - * @return {HTMLElement} Element that was passed in - */ -function makeElementSelectable(element) { - if (typeof element.onselectstart !== 'undefined') { - element.onselectstart = null; + + // High surrogate (could change last hex to 0xDB7F to treat high private + // surrogates as single characters) + if (0xD800 <= code && code <= 0xDBFF) { + if (str.length <= (i + 1)) { + throw 'High surrogate without following low surrogate'; + } + var next = str.charCodeAt(i + 1); + if (0xDC00 > next || next > 0xDFFF) { + throw 'High surrogate without following low surrogate'; + } + return str.charAt(i) + str.charAt(i + 1); } - element.style.userSelect = ''; - return element; -} -function getNodeCanvas(element) { - const impl = fabric$1.jsdomImplForWrapper(element); - return impl._canvas || impl._image; -} -function cleanUpJsdomNode(element) { - if (!fabric$1.isLikelyNode) { - return; + // Low surrogate (0xDC00 <= code && code <= 0xDFFF) + if (i === 0) { + throw 'Low surrogate without preceding high surrogate'; } - const impl = fabric$1.jsdomImplForWrapper(element); - if (impl) { - impl._image = null; - impl._canvas = null; - // unsure if necessary - impl._currentSrc = null; - impl._attributes = null; - impl._classList = null; + var prev = str.charCodeAt(i - 1); + + // (could change last hex to 0xDB7F to treat high private + // surrogates as single characters) + if (0xD800 > prev || prev > 0xDBFF) { + throw 'Low surrogate without preceding high surrogate'; } -} + // We can pass over low surrogates now as the second component + // in a pair which we have already processed + return false; + } -/** - * Returns true if context has transparent pixel - * at specified location (taking tolerance into account) - * @param {CanvasRenderingContext2D} ctx context - * @param {Number} x x coordinate in canvasElementCoordinate, not fabric space - * @param {Number} y y coordinate in canvasElementCoordinate, not fabric space - * @param {Number} tolerance Tolerance pixels around the point, not alpha tolerance - * @return {boolean} true if transparent - */ -const isTransparent = (ctx, x, y, tolerance) => { - // If tolerance is > 0 adjust start coords to take into account. - // If moves off Canvas fix to 0 - if (tolerance > 0) { - if (x > tolerance) { - x -= tolerance; - } - else { - x = 0; - } - if (y > tolerance) { - y -= tolerance; + + /** + * String utilities + * @namespace fabric.util.string + */ + fabric.util.string = { + camelize: camelize, + capitalize: capitalize, + escapeXml: escapeXml, + graphemeSplit: graphemeSplit + }; +})(); + + +(function() { + + var slice = Array.prototype.slice, emptyFunction = function() { }, + + IS_DONTENUM_BUGGY = (function() { + for (var p in { toString: 1 }) { + if (p === 'toString') { + return false; + } } - else { - y = 0; - } - } - let _isTransparent = true; - const { data } = ctx.getImageData(x, y, tolerance * 2 || 1, tolerance * 2 || 1); - const l = data.length; - // Split image data - for tolerance > 1, pixelDataSize = 4; - for (let i = 3; i < l; i += 4) { - const alphaChannel = data[i]; - if (alphaChannel > 0) { - // Stop if colour found - _isTransparent = false; - break; + return true; + })(), + + /** @ignore */ + addMethods = function(klass, source, parent) { + for (var property in source) { + + if (property in klass.prototype && + typeof klass.prototype[property] === 'function' && + (source[property] + '').indexOf('callSuper') > -1) { + + klass.prototype[property] = (function(property) { + return function() { + + var superclass = this.constructor.superclass; + this.constructor.superclass = parent; + var returnValue = source[property].apply(this, arguments); + this.constructor.superclass = superclass; + + if (property !== 'initialize') { + return returnValue; + } + }; + })(property); + } + else { + klass.prototype[property] = source[property]; + } + + if (IS_DONTENUM_BUGGY) { + if (source.toString !== Object.prototype.toString) { + klass.prototype.toString = source.toString; + } + if (source.valueOf !== Object.prototype.valueOf) { + klass.prototype.valueOf = source.valueOf; + } + } } - } - return _isTransparent; -}; + }; -/** - * Merges 2 clip paths into one visually equal clip path - * - * **IMPORTANT**:\ - * Does **NOT** clone the arguments, clone them proir if necessary. - * - * Creates a wrapper (group) that contains one clip path and is clipped by the other so content is kept where both overlap. - * Use this method if both the clip paths may have nested clip paths of their own, so assigning one to the other's clip path property is not possible. - * - * In order to handle the `inverted` property we follow logic described in the following cases:\ - * **(1)** both clip paths are inverted - the clip paths pass the inverted prop to the wrapper and loose it themselves.\ - * **(2)** one is inverted and the other isn't - the wrapper shouldn't become inverted and the inverted clip path must clip the non inverted one to produce an identical visual effect.\ - * **(3)** both clip paths are not inverted - wrapper and clip paths remain unchanged. - * - * @memberOf fabric.util - * @param {fabric.Object} c1 - * @param {fabric.Object} c2 - * @returns {fabric.Object} merged clip path - */ -const mergeClipPaths = (c1, c2) => { - var _a; - let a = c1, b = c2; - if (a.inverted && !b.inverted) { - // case (2) - a = c2; - b = c1; + function Subclass() { } + + function callSuper(methodName) { + var parentMethod = null, + _this = this; + + // climb prototype chain to find method not equal to callee's method + while (_this.constructor.superclass) { + var superClassMethod = _this.constructor.superclass.prototype[methodName]; + if (_this[methodName] !== superClassMethod) { + parentMethod = superClassMethod; + break; + } + // eslint-disable-next-line + _this = _this.constructor.superclass.prototype; } - // `b` becomes `a`'s clip path so we transform `b` to `a` coordinate plane - sendObjectToPlane(b, (_a = b.group) === null || _a === void 0 ? void 0 : _a.calcTransformMatrix(), a.calcTransformMatrix()); - // assign the `inverted` prop to the wrapping group - const inverted = a.inverted && b.inverted; - if (inverted) { - // case (1) - a.inverted = b.inverted = false; + + if (!parentMethod) { + return console.log('tried to callSuper ' + methodName + ', method not found in prototype chain', this); } - return new fabric$1.Group([a], { clipPath: b, inverted }); -}; -/** - * Easing functions - * See Easing Equations by Robert Penner - * @namespace fabric.util.ease - */ -const normalize = (a, c, p, s) => { - if (a < Math.abs(c)) { - a = c; - s = p / 4; + return (arguments.length > 1) + ? parentMethod.apply(this, slice.call(arguments, 1)) + : parentMethod.call(this); + } + + /** + * Helper for creation of "classes". + * @memberOf fabric.util + * @param {Function} [parent] optional "Class" to inherit from + * @param {Object} [properties] Properties shared by all instances of this class + * (be careful modifying objects defined here as this would affect all instances) + */ + function createClass() { + var parent = null, + properties = slice.call(arguments, 0); + + if (typeof properties[0] === 'function') { + parent = properties.shift(); } - else { - //handle the 0/0 case: - if (c === 0 && a === 0) { - s = (p / twoMathPi) * Math.asin(1); - } - else { - s = (p / twoMathPi) * Math.asin(c / a); - } + function klass() { + this.initialize.apply(this, arguments); } - return { a, c, p, s }; -}; -const elastic = (a, s, p, t, d) => a * Math.pow(2, 10 * (t -= 1)) * Math.sin(((t * d - s) * twoMathPi) / p); -/** - * Cubic easing out - * @memberOf fabric.util.ease - */ -const easeOutCubic = (t, b, c, d) => c * ((t /= d - 1) * t ** 2 + 1) + b; -/** - * Cubic easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutCubic = (t, b, c, d) => { - t /= d / 2; - if (t < 1) { - return (c / 2) * t ** 3 + b; - } - return (c / 2) * ((t -= 2) * t ** 2 + 2) + b; -}; -/** - * Quartic easing in - * @memberOf fabric.util.ease - */ -const easeInQuart = (t, b, c, d) => c * (t /= d) * t ** 3 + b; -/** - * Quartic easing out - * @memberOf fabric.util.ease - */ -const easeOutQuart = (t, b, c, d) => -c * ((t = t / d - 1) * t ** 3 - 1) + b; -/** - * Quartic easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutQuart = (t, b, c, d) => { - t /= d / 2; - if (t < 1) { - return (c / 2) * t ** 4 + b; - } - return (-c / 2) * ((t -= 2) * t ** 3 - 2) + b; -}; -/** - * Quintic easing in - * @memberOf fabric.util.ease - */ -const easeInQuint = (t, b, c, d) => c * (t /= d) * t ** 4 + b; -/** - * Quintic easing out - * @memberOf fabric.util.ease - */ -const easeOutQuint = (t, b, c, d) => c * ((t /= d - 1) * t ** 4 + 1) + b; -/** - * Quintic easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutQuint = (t, b, c, d) => { - t /= d / 2; - if (t < 1) { - return (c / 2) * t ** 5 + b; - } - return (c / 2) * ((t -= 2) * t ** 4 + 2) + b; -}; -/** - * Sinusoidal easing in - * @memberOf fabric.util.ease - */ -const easeInSine = (t, b, c, d) => -c * Math.cos((t / d) * halfPI) + c + b; -/** - * Sinusoidal easing out - * @memberOf fabric.util.ease - */ -const easeOutSine = (t, b, c, d) => c * Math.sin((t / d) * halfPI) + b; -/** - * Sinusoidal easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutSine = (t, b, c, d) => (-c / 2) * (Math.cos((Math.PI * t) / d) - 1) + b; -/** - * Exponential easing in - * @memberOf fabric.util.ease - */ -const easeInExpo = (t, b, c, d) => t === 0 ? b : c * 2 ** (10 * (t / d - 1)) + b; -/** - * Exponential easing out - * @memberOf fabric.util.ease - */ -const easeOutExpo = (t, b, c, d) => t === d ? b + c : c * -(2 ** ((-10 * t) / d) + 1) + b; -/** - * Exponential easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutExpo = (t, b, c, d) => { - if (t === 0) { - return b; - } - if (t === d) { - return b + c; - } - t /= d / 2; - if (t < 1) { - return (c / 2) * 2 ** (10 * (t - 1)) + b; - } - return (c / 2) * -(2 ** (-10 * --t) + 2) + b; -}; -/** - * Circular easing in - * @memberOf fabric.util.ease - */ -const easeInCirc = (t, b, c, d) => -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b; -/** - * Circular easing out - * @memberOf fabric.util.ease - */ -const easeOutCirc = (t, b, c, d) => c * Math.sqrt(1 - (t = t / d - 1) * t) + b; -/** - * Circular easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutCirc = (t, b, c, d) => { - t /= d / 2; - if (t < 1) { - return (-c / 2) * (Math.sqrt(1 - t ** 2) - 1) + b; - } - return (c / 2) * (Math.sqrt(1 - (t -= 2) * t) + 1) + b; -}; -/** - * Elastic easing in - * @memberOf fabric.util.ease - */ -const easeInElastic = (t, b, c, d) => { - const s = 1.70158, a = c; - let p = 0; - if (t === 0) { - return b; - } - t /= d; - if (t === 1) { - return b + c; - } - if (!p) { - p = d * 0.3; - } - const { a: normA, s: normS, p: normP } = normalize(a, c, p, s); - return -elastic(normA, normS, normP, t, d) + b; -}; -/** - * Elastic easing out - * @memberOf fabric.util.ease - */ -const easeOutElastic = (t, b, c, d) => { - const s = 1.70158, a = c; - let p = 0; - if (t === 0) { - return b; - } - t /= d; - if (t === 1) { - return b + c; + + klass.superclass = parent; + klass.subclasses = []; + + if (parent) { + Subclass.prototype = parent.prototype; + klass.prototype = new Subclass(); + parent.subclasses.push(klass); } - if (!p) { - p = d * 0.3; + for (var i = 0, length = properties.length; i < length; i++) { + addMethods(klass, properties[i], parent); } - const { a: normA, s: normS, p: normP, c: normC } = normalize(a, c, p, s); - return (normA * 2 ** (-10 * t) * Math.sin(((t * d - normS) * twoMathPi) / normP) + - normC + - b); -}; -/** - * Elastic easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutElastic = (t, b, c, d) => { - const s = 1.70158, a = c; - let p = 0; - if (t === 0) { - return b; + if (!klass.prototype.initialize) { + klass.prototype.initialize = emptyFunction; } - t /= d / 2; - if (t === 2) { - return b + c; + klass.prototype.constructor = klass; + klass.prototype.callSuper = callSuper; + return klass; + } + + fabric.util.createClass = createClass; +})(); + + +(function () { + // since ie11 can use addEventListener but they do not support options, i need to check + var couldUseAttachEvent = !!fabric.document.createElement('div').attachEvent, + touchEvents = ['touchstart', 'touchmove', 'touchend']; + /** + * Adds an event listener to an element + * @function + * @memberOf fabric.util + * @param {HTMLElement} element + * @param {String} eventName + * @param {Function} handler + */ + fabric.util.addListener = function(element, eventName, handler, options) { + element && element.addEventListener(eventName, handler, couldUseAttachEvent ? false : options); + }; + + /** + * Removes an event listener from an element + * @function + * @memberOf fabric.util + * @param {HTMLElement} element + * @param {String} eventName + * @param {Function} handler + */ + fabric.util.removeListener = function(element, eventName, handler, options) { + element && element.removeEventListener(eventName, handler, couldUseAttachEvent ? false : options); + }; + + function getTouchInfo(event) { + var touchProp = event.changedTouches; + if (touchProp && touchProp[0]) { + return touchProp[0]; } - if (!p) { - p = d * (0.3 * 1.5); + return event; + } + + fabric.util.getPointer = function(event) { + var element = event.target, + scroll = fabric.util.getScrollLeftTop(element), + _evt = getTouchInfo(event); + return { + x: _evt.clientX + scroll.left, + y: _evt.clientY + scroll.top + }; + }; + + fabric.util.isTouchEvent = function(event) { + return touchEvents.indexOf(event.type) > -1 || event.pointerType === 'touch'; + }; +})(); + + +(function () { + + /** + * Cross-browser wrapper for setting element's style + * @memberOf fabric.util + * @param {HTMLElement} element + * @param {Object} styles + * @return {HTMLElement} Element that was passed as a first argument + */ + function setStyle(element, styles) { + var elementStyle = element.style; + if (!elementStyle) { + return element; + } + if (typeof styles === 'string') { + element.style.cssText += ';' + styles; + return styles.indexOf('opacity') > -1 + ? setOpacity(element, styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) + : element; + } + for (var property in styles) { + if (property === 'opacity') { + setOpacity(element, styles[property]); + } + else { + var normalizedProperty = (property === 'float' || property === 'cssFloat') + ? (typeof elementStyle.styleFloat === 'undefined' ? 'cssFloat' : 'styleFloat') + : property; + elementStyle[normalizedProperty] = styles[property]; + } } - const { a: normA, s: normS, p: normP, c: normC } = normalize(a, c, p, s); - if (t < 1) { - return -0.5 * elastic(normA, normS, normP, t, d) + b; - } - return (normA * - Math.pow(2, -10 * (t -= 1)) * - Math.sin(((t * d - normS) * twoMathPi) / normP) * - 0.5 + - normC + - b); -}; -/** - * Backwards easing in - * @memberOf fabric.util.ease - */ -const easeInBack = (t, b, c, d, s = 1.70158) => c * (t /= d) * t * ((s + 1) * t - s) + b; -/** - * Backwards easing out - * @memberOf fabric.util.ease - */ -const easeOutBack = (t, b, c, d, s = 1.70158) => c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b; -/** - * Backwards easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutBack = (t, b, c, d, s = 1.70158) => { - t /= d / 2; - if (t < 1) { - return (c / 2) * (t * t * (((s *= 1.525) + 1) * t - s)) + b; + return element; + } + + var parseEl = fabric.document.createElement('div'), + supportsOpacity = typeof parseEl.style.opacity === 'string', + supportsFilters = typeof parseEl.style.filter === 'string', + reOpacity = /alpha\s*\(\s*opacity\s*=\s*([^\)]+)\)/, + + /** @ignore */ + setOpacity = function (element) { return element; }; + + if (supportsOpacity) { + /** @ignore */ + setOpacity = function(element, value) { + element.style.opacity = value; + return element; + }; + } + else if (supportsFilters) { + /** @ignore */ + setOpacity = function(element, value) { + var es = element.style; + if (element.currentStyle && !element.currentStyle.hasLayout) { + es.zoom = 1; + } + if (reOpacity.test(es.filter)) { + value = value >= 0.9999 ? '' : ('alpha(opacity=' + (value * 100) + ')'); + es.filter = es.filter.replace(reOpacity, value); + } + else { + es.filter += ' alpha(opacity=' + (value * 100) + ')'; + } + return element; + }; + } + + fabric.util.setStyle = setStyle; + +})(); + + +(function() { + + var _slice = Array.prototype.slice; + + /** + * Takes id and returns an element with that id (if one exists in a document) + * @memberOf fabric.util + * @param {String|HTMLElement} id + * @return {HTMLElement|null} + */ + function getById(id) { + return typeof id === 'string' ? fabric.document.getElementById(id) : id; + } + + var sliceCanConvertNodelists, + /** + * Converts an array-like object (e.g. arguments or NodeList) to an array + * @memberOf fabric.util + * @param {Object} arrayLike + * @return {Array} + */ + toArray = function(arrayLike) { + return _slice.call(arrayLike, 0); + }; + + try { + sliceCanConvertNodelists = toArray(fabric.document.childNodes) instanceof Array; + } + catch (err) { } + + if (!sliceCanConvertNodelists) { + toArray = function(arrayLike) { + var arr = new Array(arrayLike.length), i = arrayLike.length; + while (i--) { + arr[i] = arrayLike[i]; + } + return arr; + }; + } + + /** + * Creates specified element with specified attributes + * @memberOf fabric.util + * @param {String} tagName Type of an element to create + * @param {Object} [attributes] Attributes to set on an element + * @return {HTMLElement} Newly created element + */ + function makeElement(tagName, attributes) { + var el = fabric.document.createElement(tagName); + for (var prop in attributes) { + if (prop === 'class') { + el.className = attributes[prop]; + } + else if (prop === 'for') { + el.htmlFor = attributes[prop]; + } + else { + el.setAttribute(prop, attributes[prop]); + } + } + return el; + } + + /** + * Adds class to an element + * @memberOf fabric.util + * @param {HTMLElement} element Element to add class to + * @param {String} className Class to add to an element + */ + function addClass(element, className) { + if (element && (' ' + element.className + ' ').indexOf(' ' + className + ' ') === -1) { + element.className += (element.className ? ' ' : '') + className; + } + } + + /** + * Wraps element with another element + * @memberOf fabric.util + * @param {HTMLElement} element Element to wrap + * @param {HTMLElement|String} wrapper Element to wrap with + * @param {Object} [attributes] Attributes to set on a wrapper + * @return {HTMLElement} wrapper + */ + function wrapElement(element, wrapper, attributes) { + if (typeof wrapper === 'string') { + wrapper = makeElement(wrapper, attributes); } - return (c / 2) * ((t -= 2) * t * (((s *= 1.525) + 1) * t + s) + 2) + b; -}; -/** - * Bouncing easing out - * @memberOf fabric.util.ease - */ -const easeOutBounce = (t, b, c, d) => { - if ((t /= d) < 1 / 2.75) { - return c * (7.5625 * t * t) + b; + if (element.parentNode) { + element.parentNode.replaceChild(wrapper, element); } - else if (t < 2 / 2.75) { - return c * (7.5625 * (t -= 1.5 / 2.75) * t + 0.75) + b; + wrapper.appendChild(element); + return wrapper; + } + + /** + * Returns element scroll offsets + * @memberOf fabric.util + * @param {HTMLElement} element Element to operate on + * @return {Object} Object with left/top values + */ + function getScrollLeftTop(element) { + + var left = 0, + top = 0, + docElement = fabric.document.documentElement, + body = fabric.document.body || { + scrollLeft: 0, scrollTop: 0 + }; + + // While loop checks (and then sets element to) .parentNode OR .host + // to account for ShadowDOM. We still want to traverse up out of ShadowDOM, + // but the .parentNode of a root ShadowDOM node will always be null, instead + // it should be accessed through .host. See http://stackoverflow.com/a/24765528/4383938 + while (element && (element.parentNode || element.host)) { + + // Set element to element parent, or 'host' in case of ShadowDOM + element = element.parentNode || element.host; + + if (element === fabric.document) { + left = body.scrollLeft || docElement.scrollLeft || 0; + top = body.scrollTop || docElement.scrollTop || 0; + } + else { + left += element.scrollLeft || 0; + top += element.scrollTop || 0; + } + + if (element.nodeType === 1 && element.style.position === 'fixed') { + break; + } } - else if (t < 2.5 / 2.75) { - return c * (7.5625 * (t -= 2.25 / 2.75) * t + 0.9375) + b; + + return { left: left, top: top }; + } + + /** + * Returns offset for a given element + * @function + * @memberOf fabric.util + * @param {HTMLElement} element Element to get offset for + * @return {Object} Object with "left" and "top" properties + */ + function getElementOffset(element) { + var docElem, + doc = element && element.ownerDocument, + box = { left: 0, top: 0 }, + offset = { left: 0, top: 0 }, + scrollLeftTop, + offsetAttributes = { + borderLeftWidth: 'left', + borderTopWidth: 'top', + paddingLeft: 'left', + paddingTop: 'top' + }; + + if (!doc) { + return offset; } - else { - return c * (7.5625 * (t -= 2.625 / 2.75) * t + 0.984375) + b; + + for (var attr in offsetAttributes) { + offset[offsetAttributes[attr]] += parseInt(getElementStyle(element, attr), 10) || 0; } -}; -/** - * Bouncing easing in - * @memberOf fabric.util.ease - */ -const easeInBounce = (t, b, c, d) => c - easeOutBounce(d - t, 0, c, d) + b; -/** - * Bouncing easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutBounce = (t, b, c, d) => t < d / 2 - ? easeInBounce(t * 2, 0, c, d) * 0.5 + b - : easeOutBounce(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b; -/** - * Quadratic easing in - * @memberOf fabric.util.ease - */ -const easeInQuad = (t, b, c, d) => c * (t /= d) * t + b; -/** - * Quadratic easing out - * @memberOf fabric.util.ease - */ -const easeOutQuad = (t, b, c, d) => -c * (t /= d) * (t - 2) + b; -/** - * Quadratic easing in and out - * @memberOf fabric.util.ease - */ -const easeInOutQuad = (t, b, c, d) => { - t /= d / 2; - if (t < 1) { - return (c / 2) * t ** 2 + b; + + docElem = doc.documentElement; + if ( typeof element.getBoundingClientRect !== 'undefined' ) { + box = element.getBoundingClientRect(); } - return (-c / 2) * (--t * (t - 2) - 1) + b; -}; -/** - * Cubic easing in - * @memberOf fabric.util.ease - */ -const easeInCubic = (t, b, c, d) => c * (t /= d) * t * t + b; - -var ease = /*#__PURE__*/Object.freeze({ - __proto__: null, - easeOutCubic: easeOutCubic, - easeInOutCubic: easeInOutCubic, - easeInQuart: easeInQuart, - easeOutQuart: easeOutQuart, - easeInOutQuart: easeInOutQuart, - easeInQuint: easeInQuint, - easeOutQuint: easeOutQuint, - easeInOutQuint: easeInOutQuint, - easeInSine: easeInSine, - easeOutSine: easeOutSine, - easeInOutSine: easeInOutSine, - easeInExpo: easeInExpo, - easeOutExpo: easeOutExpo, - easeInOutExpo: easeInOutExpo, - easeInCirc: easeInCirc, - easeOutCirc: easeOutCirc, - easeInOutCirc: easeInOutCirc, - easeInElastic: easeInElastic, - easeOutElastic: easeOutElastic, - easeInOutElastic: easeInOutElastic, - easeInBack: easeInBack, - easeOutBack: easeOutBack, - easeInOutBack: easeInOutBack, - easeOutBounce: easeOutBounce, - easeInBounce: easeInBounce, - easeInOutBounce: easeInOutBounce, - easeInQuad: easeInQuad, - easeOutQuad: easeOutQuad, - easeInOutQuad: easeInOutQuad, - easeInCubic: easeInCubic -}); -/** - * Map of the 148 color names with HEX code - * @see: https://www.w3.org/TR/css3-color/#svg-color - */ -const ColorNameMap = { - aliceblue: '#F0F8FF', - antiquewhite: '#FAEBD7', - aqua: '#00FFFF', - aquamarine: '#7FFFD4', - azure: '#F0FFFF', - beige: '#F5F5DC', - bisque: '#FFE4C4', - black: '#000000', - blanchedalmond: '#FFEBCD', - blue: '#0000FF', - blueviolet: '#8A2BE2', - brown: '#A52A2A', - burlywood: '#DEB887', - cadetblue: '#5F9EA0', - chartreuse: '#7FFF00', - chocolate: '#D2691E', - coral: '#FF7F50', - cornflowerblue: '#6495ED', - cornsilk: '#FFF8DC', - crimson: '#DC143C', - cyan: '#00FFFF', - darkblue: '#00008B', - darkcyan: '#008B8B', - darkgoldenrod: '#B8860B', - darkgray: '#A9A9A9', - darkgrey: '#A9A9A9', - darkgreen: '#006400', - darkkhaki: '#BDB76B', - darkmagenta: '#8B008B', - darkolivegreen: '#556B2F', - darkorange: '#FF8C00', - darkorchid: '#9932CC', - darkred: '#8B0000', - darksalmon: '#E9967A', - darkseagreen: '#8FBC8F', - darkslateblue: '#483D8B', - darkslategray: '#2F4F4F', - darkslategrey: '#2F4F4F', - darkturquoise: '#00CED1', - darkviolet: '#9400D3', - deeppink: '#FF1493', - deepskyblue: '#00BFFF', - dimgray: '#696969', - dimgrey: '#696969', - dodgerblue: '#1E90FF', - firebrick: '#B22222', - floralwhite: '#FFFAF0', - forestgreen: '#228B22', - fuchsia: '#FF00FF', - gainsboro: '#DCDCDC', - ghostwhite: '#F8F8FF', - gold: '#FFD700', - goldenrod: '#DAA520', - gray: '#808080', - grey: '#808080', - green: '#008000', - greenyellow: '#ADFF2F', - honeydew: '#F0FFF0', - hotpink: '#FF69B4', - indianred: '#CD5C5C', - indigo: '#4B0082', - ivory: '#FFFFF0', - khaki: '#F0E68C', - lavender: '#E6E6FA', - lavenderblush: '#FFF0F5', - lawngreen: '#7CFC00', - lemonchiffon: '#FFFACD', - lightblue: '#ADD8E6', - lightcoral: '#F08080', - lightcyan: '#E0FFFF', - lightgoldenrodyellow: '#FAFAD2', - lightgray: '#D3D3D3', - lightgrey: '#D3D3D3', - lightgreen: '#90EE90', - lightpink: '#FFB6C1', - lightsalmon: '#FFA07A', - lightseagreen: '#20B2AA', - lightskyblue: '#87CEFA', - lightslategray: '#778899', - lightslategrey: '#778899', - lightsteelblue: '#B0C4DE', - lightyellow: '#FFFFE0', - lime: '#00FF00', - limegreen: '#32CD32', - linen: '#FAF0E6', - magenta: '#FF00FF', - maroon: '#800000', - mediumaquamarine: '#66CDAA', - mediumblue: '#0000CD', - mediumorchid: '#BA55D3', - mediumpurple: '#9370DB', - mediumseagreen: '#3CB371', - mediumslateblue: '#7B68EE', - mediumspringgreen: '#00FA9A', - mediumturquoise: '#48D1CC', - mediumvioletred: '#C71585', - midnightblue: '#191970', - mintcream: '#F5FFFA', - mistyrose: '#FFE4E1', - moccasin: '#FFE4B5', - navajowhite: '#FFDEAD', - navy: '#000080', - oldlace: '#FDF5E6', - olive: '#808000', - olivedrab: '#6B8E23', - orange: '#FFA500', - orangered: '#FF4500', - orchid: '#DA70D6', - palegoldenrod: '#EEE8AA', - palegreen: '#98FB98', - paleturquoise: '#AFEEEE', - palevioletred: '#DB7093', - papayawhip: '#FFEFD5', - peachpuff: '#FFDAB9', - peru: '#CD853F', - pink: '#FFC0CB', - plum: '#DDA0DD', - powderblue: '#B0E0E6', - purple: '#800080', - rebeccapurple: '#663399', - red: '#FF0000', - rosybrown: '#BC8F8F', - royalblue: '#4169E1', - saddlebrown: '#8B4513', - salmon: '#FA8072', - sandybrown: '#F4A460', - seagreen: '#2E8B57', - seashell: '#FFF5EE', - sienna: '#A0522D', - silver: '#C0C0C0', - skyblue: '#87CEEB', - slateblue: '#6A5ACD', - slategray: '#708090', - slategrey: '#708090', - snow: '#FFFAFA', - springgreen: '#00FF7F', - steelblue: '#4682B4', - tan: '#D2B48C', - teal: '#008080', - thistle: '#D8BFD8', - tomato: '#FF6347', - turquoise: '#40E0D0', - violet: '#EE82EE', - wheat: '#F5DEB3', - white: '#FFFFFF', - whitesmoke: '#F5F5F5', - yellow: '#FFFF00', - yellowgreen: '#9ACD32', -}; + scrollLeftTop = getScrollLeftTop(element); -/** - * Regex matching color in RGB or RGBA formats (ex: rgb(0, 0, 0), rgba(255, 100, 10, 0.5), rgba( 255 , 100 , 10 , 0.5 ), rgb(1,1,1), rgba(100%, 60%, 10%, 0.5)) - * @static - * @field - * @memberOf Color - */ -// eslint-disable-next-line max-len -const reRGBa = /^rgba?\(\s*(\d{1,3}(?:\.\d+)?%?)\s*,\s*(\d{1,3}(?:\.\d+)?%?)\s*,\s*(\d{1,3}(?:\.\d+)?%?)\s*(?:\s*,\s*((?:\d*\.?\d+)?)\s*)?\)$/i; -/** - * Regex matching color in HSL or HSLA formats (ex: hsl(200, 80%, 10%), hsla(300, 50%, 80%, 0.5), hsla( 300 , 50% , 80% , 0.5 )) - * @static - * @field - * @memberOf Color - */ -const reHSLa = /^hsla?\(\s*(\d{1,3})\s*,\s*(\d{1,3}%)\s*,\s*(\d{1,3}%)\s*(?:\s*,\s*(\d+(?:\.\d+)?)\s*)?\)$/i; -/** - * Regex matching color in HEX format (ex: #FF5544CC, #FF5555, 010155, aff) - * @static - * @field - * @memberOf Color - */ -const reHex = /^#?([0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{4}|[0-9a-f]{3})$/i; + return { + left: box.left + scrollLeftTop.left - (docElem.clientLeft || 0) + offset.left, + top: box.top + scrollLeftTop.top - (docElem.clientTop || 0) + offset.top + }; + } -/** - * @private - * @param {Number} p - * @param {Number} q - * @param {Number} t - * @return {Number} - */ -function hue2rgb(p, q, t) { - if (t < 0) { - t += 1; + /** + * Returns style attribute value of a given element + * @memberOf fabric.util + * @param {HTMLElement} element Element to get style attribute for + * @param {String} attr Style attribute to get for element + * @return {String} Style attribute value of the given element. + */ + var getElementStyle; + if (fabric.document.defaultView && fabric.document.defaultView.getComputedStyle) { + getElementStyle = function(element, attr) { + var style = fabric.document.defaultView.getComputedStyle(element, null); + return style ? style[attr] : undefined; + }; + } + else { + getElementStyle = function(element, attr) { + var value = element.style[attr]; + if (!value && element.currentStyle) { + value = element.currentStyle[attr]; + } + return value; + }; + } + + (function () { + var style = fabric.document.documentElement.style, + selectProp = 'userSelect' in style + ? 'userSelect' + : 'MozUserSelect' in style + ? 'MozUserSelect' + : 'WebkitUserSelect' in style + ? 'WebkitUserSelect' + : 'KhtmlUserSelect' in style + ? 'KhtmlUserSelect' + : ''; + + /** + * Makes element unselectable + * @memberOf fabric.util + * @param {HTMLElement} element Element to make unselectable + * @return {HTMLElement} Element that was passed in + */ + function makeElementUnselectable(element) { + if (typeof element.onselectstart !== 'undefined') { + element.onselectstart = fabric.util.falseFunction; + } + if (selectProp) { + element.style[selectProp] = 'none'; + } + else if (typeof element.unselectable === 'string') { + element.unselectable = 'on'; + } + return element; } - if (t > 1) { - t -= 1; + + /** + * Makes element selectable + * @memberOf fabric.util + * @param {HTMLElement} element Element to make selectable + * @return {HTMLElement} Element that was passed in + */ + function makeElementSelectable(element) { + if (typeof element.onselectstart !== 'undefined') { + element.onselectstart = null; + } + if (selectProp) { + element.style[selectProp] = ''; + } + else if (typeof element.unselectable === 'string') { + element.unselectable = ''; + } + return element; } - if (t < 1 / 6) { - return p + (q - p) * 6 * t; + + fabric.util.makeElementUnselectable = makeElementUnselectable; + fabric.util.makeElementSelectable = makeElementSelectable; + })(); + + function getNodeCanvas(element) { + var impl = fabric.jsdomImplForWrapper(element); + return impl._canvas || impl._image; + }; + + function cleanUpJsdomNode(element) { + if (!fabric.isLikelyNode) { + return; } - if (t < 1 / 2) { - return q; + var impl = fabric.jsdomImplForWrapper(element); + if (impl) { + impl._image = null; + impl._canvas = null; + // unsure if necessary + impl._currentSrc = null; + impl._attributes = null; + impl._classList = null; + } + } + + function setImageSmoothing(ctx, value) { + ctx.imageSmoothingEnabled = ctx.imageSmoothingEnabled || ctx.webkitImageSmoothingEnabled + || ctx.mozImageSmoothingEnabled || ctx.msImageSmoothingEnabled || ctx.oImageSmoothingEnabled; + ctx.imageSmoothingEnabled = value; + } + + /** + * setImageSmoothing sets the context imageSmoothingEnabled property. + * Used by canvas and by ImageObject. + * @memberOf fabric.util + * @since 4.0.0 + * @param {HTMLRenderingContext2D} ctx to set on + * @param {Boolean} value true or false + */ + fabric.util.setImageSmoothing = setImageSmoothing; + fabric.util.getById = getById; + fabric.util.toArray = toArray; + fabric.util.addClass = addClass; + fabric.util.makeElement = makeElement; + fabric.util.wrapElement = wrapElement; + fabric.util.getScrollLeftTop = getScrollLeftTop; + fabric.util.getElementOffset = getElementOffset; + fabric.util.getNodeCanvas = getNodeCanvas; + fabric.util.cleanUpJsdomNode = cleanUpJsdomNode; + +})(); + + +(function() { + + function addParamToUrl(url, param) { + return url + (/\?/.test(url) ? '&' : '?') + param; + } + + function emptyFn() { } + + /** + * Cross-browser abstraction for sending XMLHttpRequest + * @memberOf fabric.util + * @param {String} url URL to send XMLHttpRequest to + * @param {Object} [options] Options object + * @param {String} [options.method="GET"] + * @param {String} [options.parameters] parameters to append to url in GET or in body + * @param {String} [options.body] body to send with POST or PUT request + * @param {Function} options.onComplete Callback to invoke when request is completed + * @return {XMLHttpRequest} request + */ + function request(url, options) { + options || (options = { }); + + var method = options.method ? options.method.toUpperCase() : 'GET', + onComplete = options.onComplete || function() { }, + xhr = new fabric.window.XMLHttpRequest(), + body = options.body || options.parameters; + + /** @ignore */ + xhr.onreadystatechange = function() { + if (xhr.readyState === 4) { + onComplete(xhr); + xhr.onreadystatechange = emptyFn; + } + }; + + if (method === 'GET') { + body = null; + if (typeof options.parameters === 'string') { + url = addParamToUrl(url, options.parameters); + } } - if (t < 2 / 3) { - return p + (q - p) * (2 / 3 - t) * 6; + + xhr.open(method, url, true); + + if (method === 'POST' || method === 'PUT') { + xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); } - return p; -} + + xhr.send(body); + return xhr; + } + + fabric.util.request = request; +})(); + + /** - * Convert a [0, 255] value to hex - * @param value - * @returns + * Wrapper around `console.log` (when available) + * @param {*} [values] Values to log */ -function hexify(value) { - const hexValue = value.toString(16).toUpperCase(); - return hexValue.length === 1 ? `0${hexValue}` : hexValue; -} +fabric.log = console.log; -//@ts-nocheck /** - * @class Color common color operations - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#colors colors} + * Wrapper around `console.warn` (when available) + * @param {*} [values] Values to log as a warning */ -class Color { +fabric.warn = console.warn; + + +(function () { + + var extend = fabric.util.object.extend, + clone = fabric.util.object.clone; + + /** + * @typedef {Object} AnimationOptions + * Animation of a value or list of values. + * When using lists, think of something like this: + * fabric.util.animate({ + * startValue: [1, 2, 3], + * endValue: [2, 4, 6], + * onChange: function([a, b, c]) { + * canvas.zoomToPoint({x: b, y: c}, a) + * canvas.renderAll() + * } + * }); + * @example + * @property {Function} [onChange] Callback; invoked on every value change + * @property {Function} [onComplete] Callback; invoked when value change is completed + * @example + * // Note: startValue, endValue, and byValue must match the type + * var animationOptions = { startValue: 0, endValue: 1, byValue: 0.25 } + * var animationOptions = { startValue: [0, 1], endValue: [1, 2], byValue: [0.25, 0.25] } + * @property {number | number[]} [startValue=0] Starting value + * @property {number | number[]} [endValue=100] Ending value + * @property {number | number[]} [byValue=100] Value to modify the property by + * @property {Function} [easing] Easing function + * @property {Number} [duration=500] Duration of change (in ms) + * @property {Function} [abort] Additional function with logic. If returns true, animation aborts. + * + * @typedef {() => void} CancelFunction + * + * @typedef {Object} AnimationCurrentState + * @property {number | number[]} currentValue value in range [`startValue`, `endValue`] + * @property {number} completionRate value in range [0, 1] + * @property {number} durationRate value in range [0, 1] + * + * @typedef {(AnimationOptions & AnimationCurrentState & { cancel: CancelFunction }} AnimationContext + */ + + /** + * Array holding all running animations + * @memberof fabric + * @type {AnimationContext[]} + */ + var RUNNING_ANIMATIONS = []; + fabric.util.object.extend(RUNNING_ANIMATIONS, { + /** - * - * @param {string} [color] optional in hex or rgb(a) or hsl format or from known color list + * cancel all running animations at the next requestAnimFrame + * @returns {AnimationContext[]} */ - constructor(color) { - if (!color) { - this.setSource([0, 0, 0, 1]); - } - else { - this._tryParsingColor(color); - } - } - /** - * @private - * @param {string} [color] Color value to parse - */ - _tryParsingColor(color) { - if (color in ColorNameMap) { - color = ColorNameMap[color]; - } - const source = color === 'transparent' - ? [255, 255, 255, 0] - : Color.sourceFromHex(color) || - Color.sourceFromRgb(color) || - Color.sourceFromHsl(color) || [0, 0, 0, 1]; // color is not recognize let's default to black as canvas does - if (source) { - this.setSource(source); - } - } - /** - * Adapted from {@link https://gist.github.com/mjackson/5311256 https://gist.github.com/mjackson} - * @private - * @param {Number} r Red color value - * @param {Number} g Green color value - * @param {Number} b Blue color value - * @return {TColorSource} Hsl color - */ - _rgbToHsl(r, g, b) { - r /= 255; - g /= 255; - b /= 255; - const maxValue = Math.max(r, g, b), minValue = Math.min(r, g, b); - let h, s; - const l = (maxValue + minValue) / 2; - if (maxValue === minValue) { - h = s = 0; // achromatic - } - else { - const d = maxValue - minValue; - s = l > 0.5 ? d / (2 - maxValue - minValue) : d / (maxValue + minValue); - switch (maxValue) { - case r: - h = (g - b) / d + (g < b ? 6 : 0); - break; - case g: - h = (b - r) / d + 2; - break; - case b: - h = (r - g) / d + 4; - break; - } - h /= 6; - } - return [Math.round(h * 360), Math.round(s * 100), Math.round(l * 100)]; - } - /** - * Returns source of this color (where source is an array representation; ex: [200, 200, 100, 1]) - * @return {TColorAlphaSource} - */ - getSource() { - return this._source; - } - /** - * Sets source of this color (where source is an array representation; ex: [200, 200, 100, 1]) - * @param {TColorAlphaSource} source - */ - setSource(source) { - this._source = source; - } - /** - * Returns color representation in RGB format - * @return {String} ex: rgb(0-255,0-255,0-255) - */ - toRgb() { - const source = this.getSource(); - return `rgb(${source[0]},${source[1]},${source[2]})`; - } - /** - * Returns color representation in RGBA format - * @return {String} ex: rgba(0-255,0-255,0-255,0-1) - */ - toRgba() { - const source = this.getSource(); - return `rgba(${source[0]},${source[1]},${source[2]},${source[3]})`; - } - /** - * Returns color representation in HSL format - * @return {String} ex: hsl(0-360,0%-100%,0%-100%) - */ - toHsl() { - const source = this.getSource(), hsl = this._rgbToHsl(source[0], source[1], source[2]); - return `hsl(${hsl[0]},${hsl[1]}%,${hsl[2]}%)`; - } - /** - * Returns color representation in HSLA format - * @return {String} ex: hsla(0-360,0%-100%,0%-100%,0-1) - */ - toHsla() { - const source = this.getSource(), hsl = this._rgbToHsl(source[0], source[1], source[2]); - return `hsla(${hsl[0]},${hsl[1]}%,${hsl[2]}%,${source[3]})`; - } - /** - * Returns color representation in HEX format - * @return {String} ex: FF5555 - */ - toHex() { - const [r, g, b] = this.getSource(); - return `${hexify(r)}${hexify(g)}${hexify(b)}`; - } - /** - * Returns color representation in HEXA format - * @return {String} ex: FF5555CC - */ - toHexa() { - const source = this.getSource(); - return `${this.toHex()}${hexify(Math.round(source[3] * 255))}`; - } - /** - * Gets value of alpha channel for this color - * @return {Number} 0-1 - */ - getAlpha() { - return this.getSource()[3]; - } - /** - * Sets value of alpha channel for this color - * @param {Number} alpha Alpha value 0-1 - * @return {Color} thisArg - */ - setAlpha(alpha) { - const source = this.getSource(); - source[3] = alpha; - this.setSource(source); - return this; - } - /** - * Transforms color to its grayscale representation - * @return {Color} thisArg - */ - toGrayscale() { - const source = this.getSource(), average = parseInt((source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0), 10), currentAlpha = source[3]; - this.setSource([average, average, average, currentAlpha]); - return this; - } - /** - * Transforms color to its black and white representation - * @param {Number} threshold - * @return {Color} thisArg - */ - toBlackWhite(threshold) { - const source = this.getSource(), currentAlpha = source[3]; - let average = Math.round(source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11); - average = average < (threshold || 127) ? 0 : 255; - this.setSource([average, average, average, currentAlpha]); - return this; - } - /** - * Overlays color with another color - * @param {String|Color} otherColor - * @return {Color} thisArg - */ - overlayWith(otherColor) { - if (!(otherColor instanceof Color)) { - otherColor = new Color(otherColor); - } - const result = [], alpha = this.getAlpha(), otherAlpha = 0.5, source = this.getSource(), otherSource = otherColor.getSource(); - for (let i = 0; i < 3; i++) { - result.push(Math.round(source[i] * (1 - otherAlpha) + otherSource[i] * otherAlpha)); - } - result[3] = alpha; - this.setSource(result); - return this; - } - /** - * Returns new color object, when given a color in RGB format - * @memberOf Color - * @param {String} color Color value ex: rgb(0-255,0-255,0-255) - * @return {Color} - */ - static fromRgb(color) { - return Color.fromRgba(color); - } - /** - * Returns new color object, when given a color in RGBA format - * @static - * @function - * @memberOf Color - * @param {String} color - * @return {Color} - */ - static fromRgba(color) { - return Color.fromSource(Color.sourceFromRgb(color)); - } - /** - * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in RGB or RGBA format - * @memberOf Color - * @param {String} color Color value ex: rgb(0-255,0-255,0-255), rgb(0%-100%,0%-100%,0%-100%) - * @return {TColorAlphaSource | undefined} source - */ - static sourceFromRgb(color) { - const match = color.match(reRGBa); - if (match) { - const r = (parseInt(match[1], 10) / (/%$/.test(match[1]) ? 100 : 1)) * - (/%$/.test(match[1]) ? 255 : 1), g = (parseInt(match[2], 10) / (/%$/.test(match[2]) ? 100 : 1)) * - (/%$/.test(match[2]) ? 255 : 1), b = (parseInt(match[3], 10) / (/%$/.test(match[3]) ? 100 : 1)) * - (/%$/.test(match[3]) ? 255 : 1); - return [ - parseInt(r, 10), - parseInt(g, 10), - parseInt(b, 10), - match[4] ? parseFloat(match[4]) : 1, - ]; - } - } - /** - * Returns new color object, when given a color in HSL format - * @param {String} color Color value ex: hsl(0-260,0%-100%,0%-100%) - * @memberOf Color - * @return {Color} - */ - static fromHsl(color) { - return Color.fromHsla(color); - } - /** - * Returns new color object, when given a color in HSLA format - * @static - * @function - * @memberOf Color - * @param {String} color - * @return {Color} - */ - static fromHsla(color) { - return Color.fromSource(Color.sourceFromHsl(color)); - } - /** - * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HSL or HSLA format. - * Adapted from https://github.com/mjijackson - * @memberOf Color - * @param {String} color Color value ex: hsl(0-360,0%-100%,0%-100%) or hsla(0-360,0%-100%,0%-100%, 0-1) - * @return {TColorAlphaSource | undefined} source - * @see http://http://www.w3.org/TR/css3-color/#hsl-color - */ - static sourceFromHsl(color) { - const match = color.match(reHSLa); - if (!match) { - return; - } - const h = (((parseFloat(match[1]) % 360) + 360) % 360) / 360, s = parseFloat(match[2]) / (/%$/.test(match[2]) ? 100 : 1), l = parseFloat(match[3]) / (/%$/.test(match[3]) ? 100 : 1); - let r, g, b; - if (s === 0) { - r = g = b = l; - } - else { - const q = l <= 0.5 ? l * (s + 1) : l + s - l * s, p = l * 2 - q; - r = hue2rgb(p, q, h + 1 / 3); - g = hue2rgb(p, q, h); - b = hue2rgb(p, q, h - 1 / 3); - } - return [ - Math.round(r * 255), - Math.round(g * 255), - Math.round(b * 255), - match[4] ? parseFloat(match[4]) : 1, - ]; - } - /** - * Returns new color object, when given a color in HEX format - * @static - * @memberOf Color - * @param {String} color Color value ex: FF5555 - * @return {Color} - */ - static fromHex(color) { - return Color.fromSource(Color.sourceFromHex(color)); - } - /** - * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HEX format - * @static - * @memberOf Color - * @param {String} color ex: FF5555 or FF5544CC (RGBa) - * @return {TColorAlphaSource | undefined} source - */ - static sourceFromHex(color) { - if (color.match(reHex)) { - const value = color.slice(color.indexOf('#') + 1), isShortNotation = value.length === 3 || value.length === 4, isRGBa = value.length === 8 || value.length === 4, r = isShortNotation - ? value.charAt(0) + value.charAt(0) - : value.substring(0, 2), g = isShortNotation - ? value.charAt(1) + value.charAt(1) - : value.substring(2, 4), b = isShortNotation - ? value.charAt(2) + value.charAt(2) - : value.substring(4, 6), a = isRGBa - ? isShortNotation - ? value.charAt(3) + value.charAt(3) - : value.substring(6, 8) - : 'FF'; - return [ - parseInt(r, 16), - parseInt(g, 16), - parseInt(b, 16), - parseFloat((parseInt(a, 16) / 255).toFixed(2)), - ]; - } - } - /** - * Returns new color object, when given color in array representation (ex: [200, 100, 100, 0.5]) - * @static - * @memberOf Color - * @param {TColorSource | TColorAlphaSource} source - * @return {Color} - */ - static fromSource(source) { - const oColor = new Color(); - oColor.setSource(source); - return oColor; - } -} - -fabric$1.Color = Color; + cancelAll: function () { + var animations = this.splice(0); + animations.forEach(function (animation) { + animation.cancel(); + }); + return animations; + }, -//@ts-nocheck -/** - * Array holding all running animations - * @memberof fabric - * @type {AnimationContext[]} - */ -class RunningAnimations extends Array { - /** - * cancel all running animations at the next requestAnimFrame - * @returns {AnimationContext[]} - */ - cancelAll() { - const animations = this.splice(0); - animations.forEach((animation) => animation.cancel()); - return animations; - } /** * cancel all running animations attached to canvas at the next requestAnimFrame * @param {fabric.Canvas} canvas * @returns {AnimationContext[]} */ - cancelByCanvas(canvas) { - if (!canvas) { - return []; - } - const cancelled = this.filter((animation) => typeof animation.target === 'object' && - animation.target.canvas === canvas); - cancelled.forEach((animation) => animation.cancel()); - return cancelled; - } + cancelByCanvas: function (canvas) { + if (!canvas) { + return []; + } + var cancelled = this.filter(function (animation) { + return typeof animation.target === 'object' && animation.target.canvas === canvas; + }); + cancelled.forEach(function (animation) { + animation.cancel(); + }); + return cancelled; + }, + /** * cancel all running animations for target at the next requestAnimFrame * @param {*} target * @returns {AnimationContext[]} */ - cancelByTarget(target) { - const cancelled = this.findAnimationsByTarget(target); - cancelled.forEach((animation) => animation.cancel()); - return cancelled; - } + cancelByTarget: function (target) { + var cancelled = this.findAnimationsByTarget(target); + cancelled.forEach(function (animation) { + animation.cancel(); + }); + return cancelled; + }, + /** * * @param {CancelFunction} cancelFunc the function returned by animate * @returns {number} */ - findAnimationIndex(cancelFunc) { - return this.indexOf(this.findAnimation(cancelFunc)); - } + findAnimationIndex: function (cancelFunc) { + return this.indexOf(this.findAnimation(cancelFunc)); + }, + /** * * @param {CancelFunction} cancelFunc the function returned by animate * @returns {AnimationContext | undefined} animation's options object */ - findAnimation(cancelFunc) { - return this.find((animation) => animation.cancel === cancelFunc); - } + findAnimation: function (cancelFunc) { + return this.find(function (animation) { + return animation.cancel === cancelFunc; + }); + }, + /** * * @param {*} target the object that is assigned to the target property of the animation context * @returns {AnimationContext[]} array of animation options object associated with target */ - findAnimationsByTarget(target) { - if (!target) { - return []; - } - return this.filter((animation) => animation.target === target); + findAnimationsByTarget: function (target) { + if (!target) { + return []; + } + return this.filter(function (animation) { + return animation.target === target; + }); } -} -const runningAnimations = new RunningAnimations(); -fabric$1.runningAnimations = runningAnimations; + }); -//@ts-nocheck -/** - * - * @typedef {Object} AnimationOptions - * Animation of a value or list of values. - * @property {Function} [onChange] Callback; invoked on every value change - * @property {Function} [onComplete] Callback; invoked when value change is completed - * @property {number | number[]} [startValue=0] Starting value - * @property {number | number[]} [endValue=100] Ending value - * @property {number | number[]} [byValue=100] Value to modify the property by - * @property {Function} [easing] Easing function - * @property {number} [duration=500] Duration of change (in ms) - * @property {Function} [abort] Additional function with logic. If returns true, animation aborts. - * @property {number} [delay] Delay of animation start (in ms) - * - * @typedef {() => void} CancelFunction - * - * @typedef {Object} AnimationCurrentState - * @property {number | number[]} currentValue value in range [`startValue`, `endValue`] - * @property {number} completionRate value in range [0, 1] - * @property {number} durationRate value in range [0, 1] - * - * @typedef {(AnimationOptions & AnimationCurrentState & { cancel: CancelFunction }} AnimationContext - */ -const defaultEasing = (t, b, c, d) => -c * Math.cos((t / d) * (Math.PI / 2)) + c + b; -/** - * Changes value from one to another within certain period of time, invoking callbacks as value is being changed. - * @memberOf fabric.util - * @param {AnimationOptions} [options] Animation options - * When using lists, think of something like this: - * @example - * fabric.util.animate({ - * startValue: [1, 2, 3], - * endValue: [2, 4, 6], - * onChange: function([x, y, zoom]) { - * canvas.zoomToPoint(new Point(x, y), zoom); - * canvas.requestRenderAll(); - * } - * }); - * - * @example - * fabric.util.animate({ - * startValue: 1, - * endValue: 0, - * onChange: function(v) { - * obj.set('opacity', v); - * canvas.requestRenderAll(); - * } - * }); - * - * @returns {CancelFunction} cancel function - */ -function animate(options = {}) { - let cancel = false; - const { startValue = 0, duration = 500, easing = defaultEasing, onChange = noop, abort = noop, onComplete = noop, endValue = 100, delay = 0, } = options; - const context = Object.assign(Object.assign({}, options), { currentValue: startValue, completionRate: 0, durationRate: 0 }); - const removeFromRegistry = () => { - const index = runningAnimations.indexOf(context); - return index > -1 && runningAnimations.splice(index, 1)[0]; - }; - context.cancel = function () { + function noop() { + return false; + } + + function defaultEasing(t, b, c, d) { + return -c * Math.cos(t / d * (Math.PI / 2)) + c + b; + } + + /** + * Changes value from one to another within certain period of time, invoking callbacks as value is being changed. + * @memberOf fabric.util + * @param {AnimationOptions} [options] Animation options + * @example + * // Note: startValue, endValue, and byValue must match the type + * fabric.util.animate({ startValue: 0, endValue: 1, byValue: 0.25 }) + * fabric.util.animate({ startValue: [0, 1], endValue: [1, 2], byValue: [0.25, 0.25] }) + * @returns {CancelFunction} cancel function + */ + function animate(options) { + options || (options = {}); + var cancel = false, + context, + removeFromRegistry = function () { + var index = fabric.runningAnimations.indexOf(context); + return index > -1 && fabric.runningAnimations.splice(index, 1)[0]; + }; + + context = extend(clone(options), { + cancel: function () { cancel = true; return removeFromRegistry(); - }; - runningAnimations.push(context); - const runner = function (timestamp) { - const start = timestamp || +new Date(), finish = start + duration, isMany = Array.isArray(startValue), byValue = options.byValue || - (isMany - ? startValue.map((value, i) => endValue[i] - value) - : endValue - startValue); - options.onStart && options.onStart(); - (function tick(ticktime) { - const time = ticktime || +new Date(); - const currentTime = time > finish ? duration : time - start, timePerc = currentTime / duration, current = isMany - ? startValue.map((_value, i) => easing(currentTime, _value, byValue[i], duration)) - : easing(currentTime, startValue, byValue, duration), valuePerc = isMany - ? Math.abs((current[0] - startValue[0]) / byValue[0]) - : Math.abs((current - startValue) / byValue); - // update context - context.currentValue = isMany ? current.slice() : current; - context.completionRate = valuePerc; - context.durationRate = timePerc; - if (cancel) { - return; - } - if (abort(current, valuePerc, timePerc)) { - removeFromRegistry(); - return; - } - if (time > finish) { - // update context - context.currentValue = isMany ? endValue.slice() : endValue; - context.completionRate = 1; - context.durationRate = 1; - // execute callbacks - onChange(isMany ? endValue.slice() : endValue, 1, 1); - onComplete(endValue, 1, 1); - removeFromRegistry(); - return; - } - else { - onChange(current, valuePerc, timePerc); - requestAnimFrame(tick); - } - })(start); - }; - if (delay > 0) { - setTimeout(() => requestAnimFrame(runner), delay); - } - else { - requestAnimFrame(runner); - } + }, + currentValue: 'startValue' in options ? options.startValue : 0, + completionRate: 0, + durationRate: 0 + }); + fabric.runningAnimations.push(context); + + requestAnimFrame(function(timestamp) { + var start = timestamp || +new Date(), + duration = options.duration || 500, + finish = start + duration, time, + onChange = options.onChange || noop, + abort = options.abort || noop, + onComplete = options.onComplete || noop, + easing = options.easing || defaultEasing, + isMany = 'startValue' in options ? options.startValue.length > 0 : false, + startValue = 'startValue' in options ? options.startValue : 0, + endValue = 'endValue' in options ? options.endValue : 100, + byValue = options.byValue || (isMany ? startValue.map(function(value, i) { + return endValue[i] - startValue[i]; + }) : endValue - startValue); + + options.onStart && options.onStart(); + + (function tick(ticktime) { + time = ticktime || +new Date(); + var currentTime = time > finish ? duration : (time - start), + timePerc = currentTime / duration, + current = isMany ? startValue.map(function(_value, i) { + return easing(currentTime, startValue[i], byValue[i], duration); + }) : easing(currentTime, startValue, byValue, duration), + valuePerc = isMany ? Math.abs((current[0] - startValue[0]) / byValue[0]) + : Math.abs((current - startValue) / byValue); + // update context + context.currentValue = isMany ? current.slice() : current; + context.completionRate = valuePerc; + context.durationRate = timePerc; + if (cancel) { + return; + } + if (abort(current, valuePerc, timePerc)) { + removeFromRegistry(); + return; + } + if (time > finish) { + // update context + context.currentValue = isMany ? endValue.slice() : endValue; + context.completionRate = 1; + context.durationRate = 1; + // execute callbacks + onChange(isMany ? endValue.slice() : endValue, 1, 1); + onComplete(endValue, 1, 1); + removeFromRegistry(); + return; + } + else { + onChange(current, valuePerc, timePerc); + requestAnimFrame(tick); + } + })(start); + }); + return context.cancel; -} -const _requestAnimFrame = fabric$1.window.requestAnimationFrame || - function (callback) { - return fabric$1.window.setTimeout(callback, 1000 / 60); - }; -const _cancelAnimFrame = fabric$1.window.cancelAnimationFrame || fabric$1.window.clearTimeout; -/** - * requestAnimationFrame polyfill based on http://paulirish.com/2011/requestanimationframe-for-smart-animating/ - * In order to get a precise start time, `requestAnimFrame` should be called as an entry into the method - * @memberOf fabric.util - * @param {Function} callback Callback to invoke - * @param {DOMElement} element optional Element to associate with animation - */ -function requestAnimFrame(...args) { - return _requestAnimFrame.apply(fabric$1.window, args); -} -function cancelAnimFrame(...args) { - return _cancelAnimFrame.apply(fabric$1.window, args); -} + } + + var _requestAnimFrame = fabric.window.requestAnimationFrame || + fabric.window.webkitRequestAnimationFrame || + fabric.window.mozRequestAnimationFrame || + fabric.window.oRequestAnimationFrame || + fabric.window.msRequestAnimationFrame || + function(callback) { + return fabric.window.setTimeout(callback, 1000 / 60); + }; + + var _cancelAnimFrame = fabric.window.cancelAnimationFrame || fabric.window.clearTimeout; + + /** + * requestAnimationFrame polyfill based on http://paulirish.com/2011/requestanimationframe-for-smart-animating/ + * In order to get a precise start time, `requestAnimFrame` should be called as an entry into the method + * @memberOf fabric.util + * @param {Function} callback Callback to invoke + * @param {DOMElement} element optional Element to associate with animation + */ + function requestAnimFrame() { + return _requestAnimFrame.apply(fabric.window, arguments); + } + + function cancelAnimFrame() { + return _cancelAnimFrame.apply(fabric.window, arguments); + } -// Calculate an in-between color. Returns a "rgba()" string. -// Credit: Edwin Martin -// http://www.bitstorm.org/jquery/color-animation/jquery.animate-colors.js -// const calculateColor = (begin: number[], end: number[], pos) => { -// const [r, g, b, _a] = begin.map((beg, index) => beg + pos * (end[index] - beg)); -// const a = begin && end ? parseFloat(_a) : 1; -// return `rgba(${parseInt(r, 10)},${parseInt(g, 10)},${parseInt(b, 10)},${a})`; -// } -// color animation is broken. This function pass the tests for some reasons -// but begin and end aren't array anymore since we improved animate function -// to handler arrays internally. -function calculateColor(begin, end, pos) { - let color = 'rgba(' + - parseInt(begin[0] + pos * (end[0] - begin[0]), 10) + - ',' + - parseInt(begin[1] + pos * (end[1] - begin[1]), 10) + - ',' + - parseInt(begin[2] + pos * (end[2] - begin[2]), 10); - color += - ',' + (begin && end ? parseFloat(begin[3] + pos * (end[3] - begin[3])) : 1); + fabric.util.animate = animate; + fabric.util.requestAnimFrame = requestAnimFrame; + fabric.util.cancelAnimFrame = cancelAnimFrame; + fabric.runningAnimations = RUNNING_ANIMATIONS; +})(); + + +(function() { + // Calculate an in-between color. Returns a "rgba()" string. + // Credit: Edwin Martin + // http://www.bitstorm.org/jquery/color-animation/jquery.animate-colors.js + function calculateColor(begin, end, pos) { + var color = 'rgba(' + + parseInt((begin[0] + pos * (end[0] - begin[0])), 10) + ',' + + parseInt((begin[1] + pos * (end[1] - begin[1])), 10) + ',' + + parseInt((begin[2] + pos * (end[2] - begin[2])), 10); + + color += ',' + (begin && end ? parseFloat(begin[3] + pos * (end[3] - begin[3])) : 1); color += ')'; return color; -} -const defaultColorEasing = (currentTime, duration) => 1 - Math.cos((currentTime / duration) * (Math.PI / 2)); -/** - * Changes the color from one to another within certain period of time, invoking callbacks as value is being changed. - * @memberOf fabric.util - * @param {String} fromColor The starting color in hex or rgb(a) format. - * @param {String} toColor The starting color in hex or rgb(a) format. - * @param {Number} [duration] Duration of change (in ms). - * @param {Object} [options] Animation options - * @param {Function} [options.onChange] Callback; invoked on every value change - * @param {Function} [options.onComplete] Callback; invoked when value change is completed - * @param {Function} [options.colorEasing] Easing function. Note that this function only take two arguments (currentTime, duration). Thus the regular animation easing functions cannot be used. - * @param {Function} [options.abort] Additional function with logic. If returns true, onComplete is called. - * @returns {Function} abort function - */ -function animateColor(fromColor, toColor, duration = 500, _a = {}) { - var { colorEasing = defaultColorEasing, onComplete, onChange } = _a, restOfOptions = __rest(_a, ["colorEasing", "onComplete", "onChange"]); - const startColor = new Color(fromColor).getSource(), endColor = new Color(toColor).getSource(); - return animate(Object.assign(Object.assign({}, restOfOptions), { duration, startValue: startColor, endValue: endColor, byValue: endColor, easing: (currentTime, startValue, byValue, duration) => calculateColor(startValue, byValue, colorEasing(currentTime, duration)), - // has to take in account for color restoring; - onComplete: (current, valuePerc, timePerc) => onComplete === null || onComplete === void 0 ? void 0 : onComplete(calculateColor(endColor, endColor, 0), valuePerc, timePerc), onChange: (current, valuePerc, timePerc) => { - if (onChange) { - if (Array.isArray(current)) { - return onChange(calculateColor(current, current, 0), valuePerc, timePerc); - } - onChange(current, valuePerc, timePerc); - } - } })); -} + } -//@ts-nocheck -function addMethods(klass, source, parent) { - for (var property in source) { - if (property in klass.prototype && - typeof klass.prototype[property] === 'function' && - (source[property] + '').indexOf('callSuper') > -1) { - klass.prototype[property] = (function (property) { - return function (...args) { - var superclass = this.constructor.superclass; - this.constructor.superclass = parent; - var returnValue = source[property].call(this, ...args); - this.constructor.superclass = superclass; - if (property !== 'initialize') { - return returnValue; - } - }; - })(property); - } - else { - klass.prototype[property] = source[property]; + /** + * Changes the color from one to another within certain period of time, invoking callbacks as value is being changed. + * @memberOf fabric.util + * @param {String} fromColor The starting color in hex or rgb(a) format. + * @param {String} toColor The starting color in hex or rgb(a) format. + * @param {Number} [duration] Duration of change (in ms). + * @param {Object} [options] Animation options + * @param {Function} [options.onChange] Callback; invoked on every value change + * @param {Function} [options.onComplete] Callback; invoked when value change is completed + * @param {Function} [options.colorEasing] Easing function. Note that this function only take two arguments (currentTime, duration). Thus the regular animation easing functions cannot be used. + * @param {Function} [options.abort] Additional function with logic. If returns true, onComplete is called. + * @returns {Function} abort function + */ + function animateColor(fromColor, toColor, duration, options) { + var startColor = new fabric.Color(fromColor).getSource(), + endColor = new fabric.Color(toColor).getSource(), + originalOnComplete = options.onComplete, + originalOnChange = options.onChange; + options = options || {}; + + return fabric.util.animate(fabric.util.object.extend(options, { + duration: duration || 500, + startValue: startColor, + endValue: endColor, + byValue: endColor, + easing: function (currentTime, startValue, byValue, duration) { + var posValue = options.colorEasing + ? options.colorEasing(currentTime, duration) + : 1 - Math.cos(currentTime / duration * (Math.PI / 2)); + return calculateColor(startValue, byValue, posValue); + }, + // has to take in account for color restoring; + onComplete: function(current, valuePerc, timePerc) { + if (originalOnComplete) { + return originalOnComplete( + calculateColor(endColor, endColor, 0), + valuePerc, + timePerc + ); } - } -} -function Subclass() { } -function callSuper(methodName, ...args) { - var parentMethod = null, _this = this; - // climb prototype chain to find method not equal to callee's method - while (_this.constructor.superclass) { - var superClassMethod = _this.constructor.superclass.prototype[methodName]; - if (_this[methodName] !== superClassMethod) { - parentMethod = superClassMethod; - break; + }, + onChange: function(current, valuePerc, timePerc) { + if (originalOnChange) { + if (Array.isArray(current)) { + return originalOnChange( + calculateColor(current, current, 0), + valuePerc, + timePerc + ); + } + originalOnChange(current, valuePerc, timePerc); } - // eslint-disable-next-line - _this = _this.constructor.superclass.prototype; + } + })); + } + + fabric.util.animateColor = animateColor; + +})(); + + +(function() { + + function normalize(a, c, p, s) { + if (a < Math.abs(c)) { + a = c; + s = p / 4; } - if (!parentMethod) { - return console.log('tried to callSuper ' + - methodName + - ', method not found in prototype chain', this); + else { + //handle the 0/0 case: + if (c === 0 && a === 0) { + s = p / (2 * Math.PI) * Math.asin(1); + } + else { + s = p / (2 * Math.PI) * Math.asin(c / a); + } + } + return { a: a, c: c, p: p, s: s }; + } + + function elastic(opts, t, d) { + return opts.a * + Math.pow(2, 10 * (t -= 1)) * + Math.sin( (t * d - opts.s) * (2 * Math.PI) / opts.p ); + } + + /** + * Cubic easing out + * @memberOf fabric.util.ease + */ + function easeOutCubic(t, b, c, d) { + return c * ((t = t / d - 1) * t * t + 1) + b; + } + + /** + * Cubic easing in and out + * @memberOf fabric.util.ease + */ + function easeInOutCubic(t, b, c, d) { + t /= d / 2; + if (t < 1) { + return c / 2 * t * t * t + b; } - return parentMethod.call(this, ...args); -} -/** - * Helper for creation of "classes". - * @memberOf fabric.util - * @param {Function} [parent] optional "Class" to inherit from - * @param {Object} [properties] Properties shared by all instances of this class - * (be careful modifying objects defined here as this would affect all instances) - */ -function createClass(...args) { - var parent = null, properties = [...args]; - if (typeof args[0] === 'function') { - parent = properties.shift(); + return c / 2 * ((t -= 2) * t * t + 2) + b; + } + + /** + * Quartic easing in + * @memberOf fabric.util.ease + */ + function easeInQuart(t, b, c, d) { + return c * (t /= d) * t * t * t + b; + } + + /** + * Quartic easing out + * @memberOf fabric.util.ease + */ + function easeOutQuart(t, b, c, d) { + return -c * ((t = t / d - 1) * t * t * t - 1) + b; + } + + /** + * Quartic easing in and out + * @memberOf fabric.util.ease + */ + function easeInOutQuart(t, b, c, d) { + t /= d / 2; + if (t < 1) { + return c / 2 * t * t * t * t + b; } - function klass(...klassArgs) { - this.initialize.call(this, ...klassArgs); + return -c / 2 * ((t -= 2) * t * t * t - 2) + b; + } + + /** + * Quintic easing in + * @memberOf fabric.util.ease + */ + function easeInQuint(t, b, c, d) { + return c * (t /= d) * t * t * t * t + b; + } + + /** + * Quintic easing out + * @memberOf fabric.util.ease + */ + function easeOutQuint(t, b, c, d) { + return c * ((t = t / d - 1) * t * t * t * t + 1) + b; + } + + /** + * Quintic easing in and out + * @memberOf fabric.util.ease + */ + function easeInOutQuint(t, b, c, d) { + t /= d / 2; + if (t < 1) { + return c / 2 * t * t * t * t * t + b; } - klass.superclass = parent; - klass.subclasses = []; - if (parent) { - Subclass.prototype = parent.prototype; - klass.prototype = new Subclass(); - parent.subclasses.push(klass); + return c / 2 * ((t -= 2) * t * t * t * t + 2) + b; + } + + /** + * Sinusoidal easing in + * @memberOf fabric.util.ease + */ + function easeInSine(t, b, c, d) { + return -c * Math.cos(t / d * (Math.PI / 2)) + c + b; + } + + /** + * Sinusoidal easing out + * @memberOf fabric.util.ease + */ + function easeOutSine(t, b, c, d) { + return c * Math.sin(t / d * (Math.PI / 2)) + b; + } + + /** + * Sinusoidal easing in and out + * @memberOf fabric.util.ease + */ + function easeInOutSine(t, b, c, d) { + return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b; + } + + /** + * Exponential easing in + * @memberOf fabric.util.ease + */ + function easeInExpo(t, b, c, d) { + return (t === 0) ? b : c * Math.pow(2, 10 * (t / d - 1)) + b; + } + + /** + * Exponential easing out + * @memberOf fabric.util.ease + */ + function easeOutExpo(t, b, c, d) { + return (t === d) ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b; + } + + /** + * Exponential easing in and out + * @memberOf fabric.util.ease + */ + function easeInOutExpo(t, b, c, d) { + if (t === 0) { + return b; } - for (var i = 0, length = properties.length; i < length; i++) { - addMethods(klass, properties[i], parent); + if (t === d) { + return b + c; } - if (!klass.prototype.initialize) { - klass.prototype.initialize = noop; + t /= d / 2; + if (t < 1) { + return c / 2 * Math.pow(2, 10 * (t - 1)) + b; } - klass.prototype.constructor = klass; - klass.prototype.callSuper = callSuper; - return klass; -} + return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b; + } -//@ts-nocheck -/** - * @namespace fabric.util - */ -fabric$1.util = { - cos, - sin, - rotateVector, - createVector, - calcAngleBetweenVectors, - getHatVector, - getBisector, - degreesToRadians: degreesToRadians$1, - radiansToDegrees, - rotatePoint, - // probably we should stop exposing this from the interface - getRandomInt, - removeFromArray, - projectStrokeOnPoints, - // matrix.ts file - transformPoint, - invertTransform, - composeMatrix, - qrDecompose, - calcDimensionsMatrix, - calcRotateMatrix, - multiplyTransformMatrices, - // textStyles.ts file - stylesFromArray, - stylesToArray, - hasStyleChanged, - object: { - clone, - extend, - }, - createCanvasElement, - createImage, - copyCanvasElement, - toDataURL, - toFixed, - matrixToSVG, - parsePreserveAspectRatioAttribute, - groupSVGElements, - parseUnit, - getSvgAttributes, - findScaleToFit, - findScaleToCover, - capValue, - saveObjectTransform, - resetObjectTransform, - addTransformToObject, - applyTransformToObject, - removeTransformFromObject, - makeBoundingBoxFromPoints, - calcPlaneChangeMatrix, - sendPointToPlane, - transformPointRelativeToCanvas, - sendObjectToPlane, - string: { - camelize, - capitalize, - escapeXml, - graphemeSplit, - }, - getKlass, - loadImage, - enlivenObjects, - enlivenObjectEnlivables, - pick, - joinPath, - parsePath, - makePathSimpler, - getSmoothPathFromPoints, - getPathSegmentsInfo, - getBoundsOfCurve, - getPointOnPath, - transformPath, - getRegularPolygonPath, - request, - setStyle, - isTouchEvent, - getPointer, - removeListener, - addListener, - wrapElement, - getScrollLeftTop, - getElementOffset, - getNodeCanvas, - cleanUpJsdomNode, - makeElementUnselectable, - makeElementSelectable, - isTransparent, - sizeAfterTransform, - mergeClipPaths, - ease, - animateColor, - animate, - requestAnimFrame, - cancelAnimFrame, - createClass, -}; + /** + * Circular easing in + * @memberOf fabric.util.ease + */ + function easeInCirc(t, b, c, d) { + return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b; + } -//@ts-nocheck -const ElementsParser = function (elements, callback, options, reviver, parsingOptions, doc) { - this.elements = elements; - this.callback = callback; - this.options = options; - this.reviver = reviver; - this.svgUid = (options && options.svgUid) || 0; - this.parsingOptions = parsingOptions; - this.regexUrl = /^url\(['"]?#([^'"]+)['"]?\)/g; - this.doc = doc; -}; -(function (proto) { - proto.parse = function () { - this.instances = new Array(this.elements.length); - this.numElements = this.elements.length; - this.createObjects(); - }; - proto.createObjects = function () { - this.elements.forEach((element, i) => { - element.setAttribute('svgUid', this.svgUid); - this.createObject(element, i); - }); - }; - proto.findTag = function (el) { - return fabric$1[capitalize(el.tagName.replace('svg:', ''))]; - }; - proto.createObject = function (el, index) { - const klass = this.findTag(el); - if (klass && klass.fromElement) { - try { - klass.fromElement(el, this.createCallback(index, el), this.options); - } - catch (err) { - console.log(err); - } - } - else { - this.checkIfDone(); - } - }; - proto.createCallback = function (index, el) { - const _this = this; - return function (obj) { - let _options; - _this.resolveGradient(obj, el, 'fill'); - _this.resolveGradient(obj, el, 'stroke'); - if (obj instanceof fabric$1.Image && obj._originalElement) { - _options = obj.parsePreserveAspectRatioAttribute(el); - } - obj._removeTransformMatrix(_options); - _this.resolveClipPath(obj, el); - _this.reviver && _this.reviver(el, obj); - _this.instances[index] = obj; - _this.checkIfDone(); - }; - }; - proto.extractPropertyDefinition = function (obj, property, storage) { - const value = obj[property], regex = this.regexUrl; - if (!regex.test(value)) { - return; - } - regex.lastIndex = 0; - const id = regex.exec(value)[1]; - regex.lastIndex = 0; - return fabric$1[storage][this.svgUid][id]; - }; - proto.resolveGradient = function (obj, el, property) { - const gradientDef = this.extractPropertyDefinition(obj, property, 'gradientDefs'); - if (gradientDef) { - const opacityAttr = el.getAttribute(property + '-opacity'); - const gradient = fabric$1.Gradient.fromElement(gradientDef, obj, Object.assign(Object.assign({}, this.options), { opacity: opacityAttr })); - obj.set(property, gradient); - } - }; - proto.createClipPathCallback = function (obj, container) { - return function (_newObj) { - _newObj._removeTransformMatrix(); - _newObj.fillRule = _newObj.clipRule; - container.push(_newObj); - }; - }; - proto.resolveClipPath = function (obj, usingElement) { - var clipPath = this.extractPropertyDefinition(obj, 'clipPath', 'clipPaths'), element, klass, objTransformInv, container, gTransform; - if (clipPath) { - container = []; - objTransformInv = invertTransform(obj.calcTransformMatrix()); - // move the clipPath tag as sibling to the real element that is using it - const clipPathTag = clipPath[0].parentNode; - let clipPathOwner = usingElement; - while (clipPathOwner.parentNode && - clipPathOwner.getAttribute('clip-path') !== obj.clipPath) { - clipPathOwner = clipPathOwner.parentNode; - } - clipPathOwner.parentNode.appendChild(clipPathTag); - for (let i = 0; i < clipPath.length; i++) { - element = clipPath[i]; - klass = this.findTag(element); - klass.fromElement(element, this.createClipPathCallback(obj, container), this.options); - } - if (container.length === 1) { - clipPath = container[0]; - } - else { - clipPath = new fabric$1.Group(container); - } - gTransform = multiplyTransformMatrices(objTransformInv, clipPath.calcTransformMatrix()); - if (clipPath.clipPath) { - this.resolveClipPath(clipPath, clipPathOwner); - } - const options = qrDecompose(gTransform); - clipPath.flipX = false; - clipPath.flipY = false; - clipPath.set('scaleX', options.scaleX); - clipPath.set('scaleY', options.scaleY); - clipPath.angle = options.angle; - clipPath.skewX = options.skewX; - clipPath.skewY = 0; - clipPath.setPositionByOrigin({ x: options.translateX, y: options.translateY }, 'center', 'center'); - obj.clipPath = clipPath; - } - else { - // if clip-path does not resolve to any element, delete the property. - delete obj.clipPath; - } - }; - proto.checkIfDone = function () { - if (--this.numElements === 0) { - this.instances = this.instances.filter(function (el) { - // eslint-disable-next-line no-eq-null, eqeqeq - return el != null; - }); - this.callback(this.instances, this.elements); - } - }; -})(ElementsParser.prototype); + /** + * Circular easing out + * @memberOf fabric.util.ease + */ + function easeOutCirc(t, b, c, d) { + return c * Math.sqrt(1 - (t = t / d - 1) * t) + b; + } -//@ts-nocheck -/** - * Returns CSS rules for a given SVG document - * @param {SVGDocument} doc SVG document to parse - * @return {Object} CSS rules of this document - */ -function getCSSRules(doc) { - let styles = doc.getElementsByTagName('style'), i, len, allRules = {}, rules; - // very crude parsing of style contents - for (i = 0, len = styles.length; i < len; i++) { - let styleContents = styles[i].textContent; - // remove comments - styleContents = styleContents.replace(/\/\*[\s\S]*?\*\//g, ''); - if (styleContents.trim() === '') { - continue; - } - // recovers all the rule in this form `body { style code... }` - // rules = styleContents.match(/[^{]*\{[\s\S]*?\}/g); - rules = styleContents.split('}'); - // remove empty rules. - rules = rules.filter(function (rule) { - return rule.trim(); - }); - // at this point we have hopefully an array of rules `body { style code... ` - // eslint-disable-next-line no-loop-func - rules.forEach(function (rule) { - const match = rule.split('{'), ruleObj = {}, declaration = match[1].trim(), propertyValuePairs = declaration.split(';').filter(function (pair) { - return pair.trim(); - }); - for (i = 0, len = propertyValuePairs.length; i < len; i++) { - const pair = propertyValuePairs[i].split(':'), property = pair[0].trim(), value = pair[1].trim(); - ruleObj[property] = value; - } - rule = match[0].trim(); - rule.split(',').forEach(function (_rule) { - _rule = _rule.replace(/^svg/i, '').trim(); - if (_rule === '') { - return; - } - if (allRules[_rule]) { - Object.assign(allRules[_rule], ruleObj); - } - else { - allRules[_rule] = Object.assign({}, ruleObj); - } - }); - }); + /** + * Circular easing in and out + * @memberOf fabric.util.ease + */ + function easeInOutCirc(t, b, c, d) { + t /= d / 2; + if (t < 1) { + return -c / 2 * (Math.sqrt(1 - t * t) - 1) + b; } - return allRules; -} + return c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b; + } -//@ts-nocheck -function getMultipleNodes(doc, nodeNames) { - let nodeName, nodeArray = [], nodeList, i, len; - for (i = 0, len = nodeNames.length; i < len; i++) { - nodeName = nodeNames[i]; - nodeList = doc.getElementsByTagName(nodeName); - nodeArray = nodeArray.concat(Array.prototype.slice.call(nodeList)); + /** + * Elastic easing in + * @memberOf fabric.util.ease + */ + function easeInElastic(t, b, c, d) { + var s = 1.70158, p = 0, a = c; + if (t === 0) { + return b; } - return nodeArray; -} - -//@ts-nocheck -/** - * @private - * to support IE8 missing getElementById on SVGdocument and on node xmlDOM - */ -function elementById(doc, id) { - let el; - doc.getElementById && (el = doc.getElementById(id)); - if (el) { - return el; + t /= d; + if (t === 1) { + return b + c; } - let node, i, len, nodelist = doc.getElementsByTagName('*'); - for (i = 0, len = nodelist.length; i < len; i++) { - node = nodelist[i]; - if (id === node.getAttribute('id')) { - return node; - } + if (!p) { + p = d * 0.3; } -} + var opts = normalize(a, c, p, s); + return -elastic(opts, t, d) + b; + } -//@ts-nocheck -const gradientsAttrs = [ - 'gradientTransform', - 'x1', - 'x2', - 'y1', - 'y2', - 'gradientUnits', - 'cx', - 'cy', - 'r', - 'fx', - 'fy', -]; -const xlinkAttr = 'xlink:href'; -function recursivelyParseGradientsXlink(doc, gradient) { - const xLink = gradient.getAttribute(xlinkAttr).slice(1), referencedGradient = elementById(doc, xLink); - if (referencedGradient && referencedGradient.getAttribute(xlinkAttr)) { - recursivelyParseGradientsXlink(doc, referencedGradient); + /** + * Elastic easing out + * @memberOf fabric.util.ease + */ + function easeOutElastic(t, b, c, d) { + var s = 1.70158, p = 0, a = c; + if (t === 0) { + return b; } - gradientsAttrs.forEach(function (attr) { - if (referencedGradient && - !gradient.hasAttribute(attr) && - referencedGradient.hasAttribute(attr)) { - gradient.setAttribute(attr, referencedGradient.getAttribute(attr)); - } - }); - if (!gradient.children.length) { - const referenceClone = referencedGradient.cloneNode(true); - while (referenceClone.firstChild) { - gradient.appendChild(referenceClone.firstChild); - } + t /= d; + if (t === 1) { + return b + c; } - gradient.removeAttribute(xlinkAttr); -} - -//@ts-nocheck -const tagArray = [ - 'linearGradient', - 'radialGradient', - 'svg:linearGradient', - 'svg:radialGradient', -]; -/** - * Parses an SVG document, returning all of the gradient declarations found in it - * @param {SVGDocument} doc SVG document to parse - * @return {Object} Gradient definitions; key corresponds to element id, value -- to gradient definition element - */ -function getGradientDefs(doc) { - let elList = getMultipleNodes(doc, tagArray), el, j = 0, gradientDefs = {}; - j = elList.length; - while (j--) { - el = elList[j]; - if (el.getAttribute('xlink:href')) { - recursivelyParseGradientsXlink(doc, el); - } - gradientDefs[el.getAttribute('id')] = el; + if (!p) { + p = d * 0.3; } - return gradientDefs; -} + var opts = normalize(a, c, p, s); + return opts.a * Math.pow(2, -10 * t) * Math.sin((t * d - opts.s) * (2 * Math.PI) / opts.p ) + opts.c + b; + } -//@ts-nocheck -/** - * Add a element that envelop all child elements and makes the viewbox transformMatrix descend on all elements - */ -function applyViewboxTransform(element) { - if (!svgViewBoxElementsRegEx.test(element.nodeName)) { - return {}; - } - let viewBoxAttr = element.getAttribute('viewBox'), scaleX = 1, scaleY = 1, minX = 0, minY = 0, viewBoxWidth, viewBoxHeight, matrix, el, widthAttr = element.getAttribute('width'), heightAttr = element.getAttribute('height'), x = element.getAttribute('x') || 0, y = element.getAttribute('y') || 0, preserveAspectRatio = element.getAttribute('preserveAspectRatio') || '', missingViewBox = !viewBoxAttr || !(viewBoxAttr = viewBoxAttr.match(reViewBoxAttrValue)), missingDimAttr = !widthAttr || - !heightAttr || - widthAttr === '100%' || - heightAttr === '100%', toBeParsed = missingViewBox && missingDimAttr, parsedDim = {}, translateMatrix = '', widthDiff = 0, heightDiff = 0; - parsedDim.width = 0; - parsedDim.height = 0; - parsedDim.toBeParsed = toBeParsed; - if (missingViewBox) { - if ((x || y) && - element.parentNode && - element.parentNode.nodeName !== '#document') { - translateMatrix = - ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') '; - matrix = (element.getAttribute('transform') || '') + translateMatrix; - element.setAttribute('transform', matrix); - element.removeAttribute('x'); - element.removeAttribute('y'); - } + /** + * Elastic easing in and out + * @memberOf fabric.util.ease + */ + function easeInOutElastic(t, b, c, d) { + var s = 1.70158, p = 0, a = c; + if (t === 0) { + return b; } - if (toBeParsed) { - return parsedDim; + t /= d / 2; + if (t === 2) { + return b + c; } - if (missingViewBox) { - parsedDim.width = parseUnit(widthAttr); - parsedDim.height = parseUnit(heightAttr); - // set a transform for elements that have x y and are inner(only) SVGs - return parsedDim; + if (!p) { + p = d * (0.3 * 1.5); } - minX = -parseFloat(viewBoxAttr[1]); - minY = -parseFloat(viewBoxAttr[2]); - viewBoxWidth = parseFloat(viewBoxAttr[3]); - viewBoxHeight = parseFloat(viewBoxAttr[4]); - parsedDim.minX = minX; - parsedDim.minY = minY; - parsedDim.viewBoxWidth = viewBoxWidth; - parsedDim.viewBoxHeight = viewBoxHeight; - if (!missingDimAttr) { - parsedDim.width = parseUnit(widthAttr); - parsedDim.height = parseUnit(heightAttr); - scaleX = parsedDim.width / viewBoxWidth; - scaleY = parsedDim.height / viewBoxHeight; + var opts = normalize(a, c, p, s); + if (t < 1) { + return -0.5 * elastic(opts, t, d) + b; } - else { - parsedDim.width = viewBoxWidth; - parsedDim.height = viewBoxHeight; + return opts.a * Math.pow(2, -10 * (t -= 1)) * + Math.sin((t * d - opts.s) * (2 * Math.PI) / opts.p ) * 0.5 + opts.c + b; + } + + /** + * Backwards easing in + * @memberOf fabric.util.ease + */ + function easeInBack(t, b, c, d, s) { + if (s === undefined) { + s = 1.70158; + } + return c * (t /= d) * t * ((s + 1) * t - s) + b; + } + + /** + * Backwards easing out + * @memberOf fabric.util.ease + */ + function easeOutBack(t, b, c, d, s) { + if (s === undefined) { + s = 1.70158; + } + return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b; + } + + /** + * Backwards easing in and out + * @memberOf fabric.util.ease + */ + function easeInOutBack(t, b, c, d, s) { + if (s === undefined) { + s = 1.70158; } - // default is to preserve aspect ratio - preserveAspectRatio = parsePreserveAspectRatioAttribute(preserveAspectRatio); - if (preserveAspectRatio.alignX !== 'none') { - //translate all container for the effect of Mid, Min, Max - if (preserveAspectRatio.meetOrSlice === 'meet') { - scaleY = scaleX = scaleX > scaleY ? scaleY : scaleX; - // calculate additional translation to move the viewbox - } - if (preserveAspectRatio.meetOrSlice === 'slice') { - scaleY = scaleX = scaleX > scaleY ? scaleX : scaleY; - // calculate additional translation to move the viewbox - } - widthDiff = parsedDim.width - viewBoxWidth * scaleX; - heightDiff = parsedDim.height - viewBoxHeight * scaleX; - if (preserveAspectRatio.alignX === 'Mid') { - widthDiff /= 2; - } - if (preserveAspectRatio.alignY === 'Mid') { - heightDiff /= 2; - } - if (preserveAspectRatio.alignX === 'Min') { - widthDiff = 0; - } - if (preserveAspectRatio.alignY === 'Min') { - heightDiff = 0; - } + t /= d / 2; + if (t < 1) { + return c / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)) + b; } - if (scaleX === 1 && - scaleY === 1 && - minX === 0 && - minY === 0 && - x === 0 && - y === 0) { - return parsedDim; + return c / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2) + b; + } + + /** + * Bouncing easing in + * @memberOf fabric.util.ease + */ + function easeInBounce(t, b, c, d) { + return c - easeOutBounce (d - t, 0, c, d) + b; + } + + /** + * Bouncing easing out + * @memberOf fabric.util.ease + */ + function easeOutBounce(t, b, c, d) { + if ((t /= d) < (1 / 2.75)) { + return c * (7.5625 * t * t) + b; } - if ((x || y) && element.parentNode.nodeName !== '#document') { - translateMatrix = ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') '; + else if (t < (2 / 2.75)) { + return c * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75) + b; } - matrix = - translateMatrix + - ' matrix(' + - scaleX + - ' 0' + - ' 0 ' + - scaleY + - ' ' + - (minX * scaleX + widthDiff) + - ' ' + - (minY * scaleY + heightDiff) + - ') '; - // seems unused. - // parsedDim.viewboxTransform = parseTransformAttribute(matrix); - if (element.nodeName === 'svg') { - el = element.ownerDocument.createElementNS(svgNS, 'g'); - // element.firstChild != null - while (element.firstChild) { - el.appendChild(element.firstChild); - } - element.appendChild(el); + else if (t < (2.5 / 2.75)) { + return c * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375) + b; } else { - el = element; - el.removeAttribute('x'); - el.removeAttribute('y'); - matrix = el.getAttribute('transform') + matrix; + return c * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375) + b; } - el.setAttribute('transform', matrix); - return parsedDim; -} + } -//@ts-nocheck -function hasAncestorWithNodeName(element, nodeName) { - while (element && (element = element.parentNode)) { - if (element.nodeName && - nodeName.test(element.nodeName.replace('svg:', '')) && - !element.getAttribute('instantiated_by_use')) { - return true; - } - } - return false; -} + /** + * Bouncing easing in and out + * @memberOf fabric.util.ease + */ + function easeInOutBounce(t, b, c, d) { + if (t < d / 2) { + return easeInBounce (t * 2, 0, c, d) * 0.5 + b; + } + return easeOutBounce(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b; + } -//@ts-nocheck -/** - * Transforms an array of svg elements to corresponding fabric.* instances - * @static - * @memberOf fabric - * @param {Array} elements Array of elements to parse - * @param {Function} callback Being passed an array of fabric instances (transformed from SVG elements) - * @param {Object} [options] Options object - * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. - */ -function parseElements(elements, callback, options, reviver, parsingOptions) { - new ElementsParser(elements, callback, options, reviver, parsingOptions).parse(); -} + /** + * Easing functions + * See Easing Equations by Robert Penner + * @namespace fabric.util.ease + */ + fabric.util.ease = { -//@ts-nocheck -function parseUseDirectives(doc) { - let nodelist = getMultipleNodes(doc, ['use', 'svg:use']), i = 0; - while (nodelist.length && i < nodelist.length) { - const el = nodelist[i], xlinkAttribute = el.getAttribute('xlink:href') || el.getAttribute('href'); - if (xlinkAttribute === null) { - return; - } - var xlink = xlinkAttribute.slice(1), x = el.getAttribute('x') || 0, y = el.getAttribute('y') || 0, el2 = elementById(doc, xlink).cloneNode(true), currentTrans = (el2.getAttribute('transform') || '') + - ' translate(' + - x + - ', ' + - y + - ')', parentNode, oldLength = nodelist.length, attr, j, attrs, len, namespace = svgNS; - applyViewboxTransform(el2); - if (/^svg$/i.test(el2.nodeName)) { - const el3 = el2.ownerDocument.createElementNS(namespace, 'g'); - for (j = 0, attrs = el2.attributes, len = attrs.length; j < len; j++) { - attr = attrs.item(j); - el3.setAttributeNS(namespace, attr.nodeName, attr.nodeValue); - } - // el2.firstChild != null - while (el2.firstChild) { - el3.appendChild(el2.firstChild); - } - el2 = el3; - } - for (j = 0, attrs = el.attributes, len = attrs.length; j < len; j++) { - attr = attrs.item(j); - if (attr.nodeName === 'x' || - attr.nodeName === 'y' || - attr.nodeName === 'xlink:href' || - attr.nodeName === 'href') { - continue; - } - if (attr.nodeName === 'transform') { - currentTrans = attr.nodeValue + ' ' + currentTrans; - } - else { - el2.setAttribute(attr.nodeName, attr.nodeValue); - } - } - el2.setAttribute('transform', currentTrans); - el2.setAttribute('instantiated_by_use', '1'); - el2.removeAttribute('id'); - parentNode = el.parentNode; - parentNode.replaceChild(el2, el); - // some browsers do not shorten nodelist after replaceChild (IE8) - if (nodelist.length === oldLength) { - i++; - } - } -} + /** + * Quadratic easing in + * @memberOf fabric.util.ease + */ + easeInQuad: function(t, b, c, d) { + return c * (t /= d) * t + b; + }, -//@ts-nocheck -/** - * Parses an SVG document, converts it to an array of corresponding fabric.* instances and passes them to a callback - * @static - * @function - * @memberOf fabric - * @param {SVGDocument} doc SVG document to parse - * @param {Function} callback Callback to call when parsing is finished; - * It's being passed an array of elements (parsed from a document). - * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. - * @param {Object} [parsingOptions] options for parsing document - * @param {String} [parsingOptions.crossOrigin] crossOrigin settings - * @param {AbortSignal} [parsingOptions.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - */ -function parseSVGDocument(doc, callback, reviver, parsingOptions) { - if (!doc) { - return; - } - if (parsingOptions && - parsingOptions.signal && - parsingOptions.signal.aborted) { - throw new Error('`options.signal` is in `aborted` state'); - } - parseUseDirectives(doc); - let svgUid = fabric$1.Object.__uid++, i, len, options = applyViewboxTransform(doc), descendants = Array.from(doc.getElementsByTagName('*')); - options.crossOrigin = parsingOptions && parsingOptions.crossOrigin; - options.svgUid = svgUid; - options.signal = parsingOptions && parsingOptions.signal; - if (descendants.length === 0 && isLikelyNode) { - // we're likely in node, where "o3-xml" library fails to gEBTN("*") - // https://github.com/ajaxorg/node-o3-xml/issues/21 - descendants = doc.selectNodes('//*[name(.)!="svg"]'); - const arr = []; - for (i = 0, len = descendants.length; i < len; i++) { - arr[i] = descendants[i]; - } - descendants = arr; - } - const elements = descendants.filter(function (el) { - applyViewboxTransform(el); - return (svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')) && - !hasAncestorWithNodeName(el, svgInvalidAncestorsRegEx)); // http://www.w3.org/TR/SVG/struct.html#DefsElement - }); - if (!elements || (elements && !elements.length)) { - callback && callback([], {}); - return; - } - const localClipPaths = {}; - descendants - .filter(function (el) { - return el.nodeName.replace('svg:', '') === 'clipPath'; - }) - .forEach(function (el) { - const id = el.getAttribute('id'); - localClipPaths[id] = Array.from(el.getElementsByTagName('*')).filter(function (el) { - return svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')); - }); - }); - gradientDefs[svgUid] = getGradientDefs(doc); - cssRules[svgUid] = getCSSRules(doc); - clipPaths[svgUid] = localClipPaths; - // Precedence of rules: style > class > attribute - parseElements(elements, function (instances, elements) { - if (callback) { - callback(instances, options, elements, descendants); - delete gradientDefs[svgUid]; - delete cssRules[svgUid]; - delete clipPaths[svgUid]; - } - }, Object.assign({}, options), reviver, parsingOptions); -} + /** + * Quadratic easing out + * @memberOf fabric.util.ease + */ + easeOutQuad: function(t, b, c, d) { + return -c * (t /= d) * (t - 2) + b; + }, -//@ts-nocheck -/** - * Takes string corresponding to an SVG document, and parses it into a set of fabric objects - * @memberOf fabric - * @param {String} string - * @param {Function} callback - * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. - * @param {Object} [options] Object containing options for parsing - * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - */ -function loadSVGFromString(string, callback, reviver, options) { - const parser = new fabric$1.window.DOMParser(), doc = parser.parseFromString(string.trim(), 'text/xml'); - parseSVGDocument(doc.documentElement, function (results, _options, elements, allElements) { - callback(results, _options, elements, allElements); - }, reviver, options); -} + /** + * Quadratic easing in and out + * @memberOf fabric.util.ease + */ + easeInOutQuad: function(t, b, c, d) { + t /= (d / 2); + if (t < 1) { + return c / 2 * t * t + b; + } + return -c / 2 * ((--t) * (t - 2) - 1) + b; + }, -//@ts-nocheck -/** - * Takes url corresponding to an SVG document, and parses it into a set of fabric objects. - * Note that SVG is fetched via XMLHttpRequest, so it needs to conform to SOP (Same Origin Policy) - * @memberOf fabric - * @param {String} url - * @param {Function} callback - * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. - * @param {Object} [options] Object containing options for parsing - * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - */ -function loadSVGFromURL(url, callback, reviver, options) { - new request(url.replace(/^\n\s*/, '').trim(), { - method: 'get', - onComplete: onComplete, - signal: options && options.signal, - }); - function onComplete(r) { - const xml = r.responseXML; - if (!xml || !xml.documentElement) { - callback && callback(null); - return false; - } - parseSVGDocument(xml.documentElement, function (results, _options, elements, allElements) { - callback && callback(results, _options, elements, allElements); - }, reviver, options); - } -} + /** + * Cubic easing in + * @memberOf fabric.util.ease + */ + easeInCubic: function(t, b, c, d) { + return c * (t /= d) * t * t + b; + }, -//@ts-nocheck -function selectorMatches(element, selector) { - let nodeName = element.nodeName, classNames = element.getAttribute('class'), id = element.getAttribute('id'), matcher, i; - // i check if a selector matches slicing away part from it. - // if i get empty string i should match - matcher = new RegExp('^' + nodeName, 'i'); - selector = selector.replace(matcher, ''); - if (id && selector.length) { - matcher = new RegExp('#' + id + '(?![a-zA-Z\\-]+)', 'i'); - selector = selector.replace(matcher, ''); - } - if (classNames && selector.length) { - classNames = classNames.split(' '); - for (i = classNames.length; i--;) { - matcher = new RegExp('\\.' + classNames[i] + '(?![a-zA-Z\\-]+)', 'i'); - selector = selector.replace(matcher, ''); - } - } - return selector.length === 0; -} + easeOutCubic: easeOutCubic, + easeInOutCubic: easeInOutCubic, + easeInQuart: easeInQuart, + easeOutQuart: easeOutQuart, + easeInOutQuart: easeInOutQuart, + easeInQuint: easeInQuint, + easeOutQuint: easeOutQuint, + easeInOutQuint: easeInOutQuint, + easeInSine: easeInSine, + easeOutSine: easeOutSine, + easeInOutSine: easeInOutSine, + easeInExpo: easeInExpo, + easeOutExpo: easeOutExpo, + easeInOutExpo: easeInOutExpo, + easeInCirc: easeInCirc, + easeOutCirc: easeOutCirc, + easeInOutCirc: easeInOutCirc, + easeInElastic: easeInElastic, + easeOutElastic: easeOutElastic, + easeInOutElastic: easeInOutElastic, + easeInBack: easeInBack, + easeOutBack: easeOutBack, + easeInOutBack: easeInOutBack, + easeInBounce: easeInBounce, + easeOutBounce: easeOutBounce, + easeInOutBounce: easeInOutBounce + }; -//@ts-nocheck -function doesSomeParentMatch(element, selectors) { - let selector, parentMatching = true; - while (element.parentNode && - element.parentNode.nodeType === 1 && - selectors.length) { - if (parentMatching) { - selector = selectors.pop(); - } - element = element.parentNode; - parentMatching = selectorMatches(element, selector); - } - return selectors.length === 0; -} +})(); -//@ts-nocheck -/** - * @private - */ -function elementMatchesRule(element, selectors) { - let firstMatching, parentMatching = true; - //start from rightmost selector. - firstMatching = selectorMatches(element, selectors.pop()); - if (firstMatching && selectors.length) { - parentMatching = doesSomeParentMatch(element, selectors); - } - return firstMatching && parentMatching && selectors.length === 0; -} -//@ts-nocheck -/** - * @private - */ -function getGlobalStylesForElement(element, svgUid) { - const styles = {}; - for (const rule in cssRules[svgUid]) { - if (elementMatchesRule(element, rule.split(' '))) { - for (const property in cssRules[svgUid][rule]) { - styles[property] = cssRules[svgUid][rule][property]; - } - } - } - return styles; -} +(function(global) { -//@ts-nocheck -function normalizeAttr(attr) { + 'use strict'; + + /** + * @name fabric + * @namespace + */ + + var fabric = global.fabric || (global.fabric = { }), + extend = fabric.util.object.extend, + clone = fabric.util.object.clone, + toFixed = fabric.util.toFixed, + parseUnit = fabric.util.parseUnit, + multiplyTransformMatrices = fabric.util.multiplyTransformMatrices, + + svgValidTagNames = ['path', 'circle', 'polygon', 'polyline', 'ellipse', 'rect', 'line', + 'image', 'text'], + svgViewBoxElements = ['symbol', 'image', 'marker', 'pattern', 'view', 'svg'], + svgInvalidAncestors = ['pattern', 'defs', 'symbol', 'metadata', 'clipPath', 'mask', 'desc'], + svgValidParents = ['symbol', 'g', 'a', 'svg', 'clipPath', 'defs'], + + attributesMap = { + cx: 'left', + x: 'left', + r: 'radius', + cy: 'top', + y: 'top', + display: 'visible', + visibility: 'visible', + transform: 'transformMatrix', + 'fill-opacity': 'fillOpacity', + 'fill-rule': 'fillRule', + 'font-family': 'fontFamily', + 'font-size': 'fontSize', + 'font-style': 'fontStyle', + 'font-weight': 'fontWeight', + 'letter-spacing': 'charSpacing', + 'paint-order': 'paintFirst', + 'stroke-dasharray': 'strokeDashArray', + 'stroke-dashoffset': 'strokeDashOffset', + 'stroke-linecap': 'strokeLineCap', + 'stroke-linejoin': 'strokeLineJoin', + 'stroke-miterlimit': 'strokeMiterLimit', + 'stroke-opacity': 'strokeOpacity', + 'stroke-width': 'strokeWidth', + 'text-decoration': 'textDecoration', + 'text-anchor': 'textAnchor', + opacity: 'opacity', + 'clip-path': 'clipPath', + 'clip-rule': 'clipRule', + 'vector-effect': 'strokeUniform', + 'image-rendering': 'imageSmoothing', + }, + + colorAttributes = { + stroke: 'strokeOpacity', + fill: 'fillOpacity' + }, + + fSize = 'font-size', cPath = 'clip-path'; + + fabric.svgValidTagNamesRegEx = getSvgRegex(svgValidTagNames); + fabric.svgViewBoxElementsRegEx = getSvgRegex(svgViewBoxElements); + fabric.svgInvalidAncestorsRegEx = getSvgRegex(svgInvalidAncestors); + fabric.svgValidParentsRegEx = getSvgRegex(svgValidParents); + + fabric.cssRules = { }; + fabric.gradientDefs = { }; + fabric.clipPaths = { }; + + function normalizeAttr(attr) { // transform attribute names if (attr in attributesMap) { - return attributesMap[attr]; + return attributesMap[attr]; } return attr; -} - -//@ts-nocheck -function rotateMatrix(matrix, args) { - const cosValue = cos(args[0]), sinValue = sin(args[0]); - let x = 0, y = 0; - if (args.length === 3) { - x = args[1]; - y = args[2]; - } - matrix[0] = cosValue; - matrix[1] = sinValue; - matrix[2] = -sinValue; - matrix[3] = cosValue; - matrix[4] = x - (cosValue * x - sinValue * y); - matrix[5] = y - (sinValue * x + cosValue * y); -} + } -//@ts-nocheck -function scaleMatrix(matrix, args) { - const multiplierX = args[0], multiplierY = args.length === 2 ? args[1] : args[0]; - matrix[0] = multiplierX; - matrix[3] = multiplierY; -} + function normalizeValue(attr, value, parentAttributes, fontSize) { + var isArray = Object.prototype.toString.call(value) === '[object Array]', + parsed; -//@ts-nocheck -function skewMatrix(matrix, args, pos) { - matrix[pos] = Math.tan(degreesToRadians$1(args[0])); -} - -//@ts-nocheck -function translateMatrix(matrix, args) { - matrix[4] = args[0]; - if (args.length === 2) { - matrix[5] = args[1]; - } -} - -//@ts-nocheck -// == begin transform regexp -const number = reNum, skewX = '(?:(skewX)\\s*\\(\\s*(' + number + ')\\s*\\))', skewY = '(?:(skewY)\\s*\\(\\s*(' + number + ')\\s*\\))', rotate = '(?:(rotate)\\s*\\(\\s*(' + - number + - ')(?:' + - commaWsp + - '(' + - number + - ')' + - commaWsp + - '(' + - number + - '))?\\s*\\))', scale = '(?:(scale)\\s*\\(\\s*(' + - number + - ')(?:' + - commaWsp + - '(' + - number + - '))?\\s*\\))', translate = '(?:(translate)\\s*\\(\\s*(' + - number + - ')(?:' + - commaWsp + - '(' + - number + - '))?\\s*\\))', matrix = '(?:(matrix)\\s*\\(\\s*' + - '(' + - number + - ')' + - commaWsp + - '(' + - number + - ')' + - commaWsp + - '(' + - number + - ')' + - commaWsp + - '(' + - number + - ')' + - commaWsp + - '(' + - number + - ')' + - commaWsp + - '(' + - number + - ')' + - '\\s*\\))', transform = '(?:' + - matrix + - '|' + - translate + - '|' + - scale + - '|' + - rotate + - '|' + - skewX + - '|' + - skewY + - ')', transforms = '(?:' + transform + '(?:' + commaWsp + '*' + transform + ')*' + ')', transformList = '^\\s*(?:' + transforms + '?)\\s*$', -// http://www.w3.org/TR/SVG/coords.html#TransformAttribute -reTransformList = new RegExp(transformList), -// == end transform regexp -reTransform = new RegExp(transform, 'g'); -/** - * Parses "transform" attribute, returning an array of values - * @static - * @function - * @memberOf fabric - * @param {String} attributeValue String containing attribute value - * @return {Array} Array of 6 elements representing transformation matrix - */ -function parseTransformAttribute(attributeValue) { - // start with identity matrix - let matrix = iMatrix.concat(), matrices = []; - // return if no argument was given or - // an argument does not match transform attribute regexp - if (!attributeValue || - (attributeValue && !reTransformList.test(attributeValue))) { - return matrix; - } - attributeValue.replace(reTransform, function (match) { - const m = new RegExp(transform).exec(match).filter(function (match) { - // match !== '' && match != null - return !!match; - }), operation = m[1], args = m.slice(2).map(parseFloat); - switch (operation) { - case 'translate': - translateMatrix(matrix, args); - break; - case 'rotate': - args[0] = degreesToRadians$1(args[0]); - rotateMatrix(matrix, args); - break; - case 'scale': - scaleMatrix(matrix, args); - break; - case 'skewX': - skewMatrix(matrix, args, 2); - break; - case 'skewY': - skewMatrix(matrix, args, 1); - break; - case 'matrix': - matrix = args; - break; - } - // snapshot current matrix into matrices array - matrices.push(matrix.concat()); - // reset - matrix = iMatrix.concat(); - }); - let combinedMatrix = matrices[0]; - while (matrices.length > 1) { - matrices.shift(); - combinedMatrix = multiplyTransformMatrices(combinedMatrix, matrices[0]); - } - return combinedMatrix; -} - -//@ts-nocheck -function normalizeValue(attr, value, parentAttributes, fontSize) { - let isArray = Array.isArray(value), parsed; if ((attr === 'fill' || attr === 'stroke') && value === 'none') { - value = ''; + value = ''; } else if (attr === 'strokeUniform') { - return value === 'non-scaling-stroke'; + return (value === 'non-scaling-stroke'); } else if (attr === 'strokeDashArray') { - if (value === 'none') { - value = null; - } - else { - value = value.replace(/,/g, ' ').split(/\s+/).map(parseFloat); - } + if (value === 'none') { + value = null; + } + else { + value = value.replace(/,/g, ' ').split(/\s+/).map(parseFloat); + } } else if (attr === 'transformMatrix') { - if (parentAttributes && parentAttributes.transformMatrix) { - value = multiplyTransformMatrices(parentAttributes.transformMatrix, parseTransformAttribute(value)); - } - else { - value = parseTransformAttribute(value); - } + if (parentAttributes && parentAttributes.transformMatrix) { + value = multiplyTransformMatrices( + parentAttributes.transformMatrix, fabric.parseTransformAttribute(value)); + } + else { + value = fabric.parseTransformAttribute(value); + } } else if (attr === 'visible') { - value = value !== 'none' && value !== 'hidden'; - // display=none on parent element always takes precedence over child element - if (parentAttributes && parentAttributes.visible === false) { - value = false; - } + value = value !== 'none' && value !== 'hidden'; + // display=none on parent element always takes precedence over child element + if (parentAttributes && parentAttributes.visible === false) { + value = false; + } } else if (attr === 'opacity') { - value = parseFloat(value); - if (parentAttributes && typeof parentAttributes.opacity !== 'undefined') { - value *= parentAttributes.opacity; - } + value = parseFloat(value); + if (parentAttributes && typeof parentAttributes.opacity !== 'undefined') { + value *= parentAttributes.opacity; + } } else if (attr === 'textAnchor' /* text-anchor */) { - value = value === 'start' ? 'left' : value === 'end' ? 'right' : 'center'; + value = value === 'start' ? 'left' : value === 'end' ? 'right' : 'center'; } else if (attr === 'charSpacing') { - // parseUnit returns px and we convert it to em - parsed = (parseUnit(value, fontSize) / fontSize) * 1000; + // parseUnit returns px and we convert it to em + parsed = parseUnit(value, fontSize) / fontSize * 1000; } else if (attr === 'paintFirst') { - const fillIndex = value.indexOf('fill'); - const strokeIndex = value.indexOf('stroke'); - var value = 'fill'; - if (fillIndex > -1 && strokeIndex > -1 && strokeIndex < fillIndex) { - value = 'stroke'; - } - else if (fillIndex === -1 && strokeIndex > -1) { - value = 'stroke'; - } + var fillIndex = value.indexOf('fill'); + var strokeIndex = value.indexOf('stroke'); + var value = 'fill'; + if (fillIndex > -1 && strokeIndex > -1 && strokeIndex < fillIndex) { + value = 'stroke'; + } + else if (fillIndex === -1 && strokeIndex > -1) { + value = 'stroke'; + } } else if (attr === 'href' || attr === 'xlink:href' || attr === 'font') { - return value; + return value; } else if (attr === 'imageSmoothing') { - return value === 'optimizeQuality'; + return (value === 'optimizeQuality'); } else { - parsed = isArray ? value.map(parseUnit) : parseUnit(value, fontSize); + parsed = isArray ? value.map(parseUnit) : parseUnit(value, fontSize); } - return !isArray && isNaN(parsed) ? value : parsed; -} -//@ts-nocheck -/** - * Parses a short font declaration, building adding its properties to a style object - * @static - * @function - * @memberOf fabric - * @param {String} value font declaration - * @param {Object} oStyle definition - */ -function parseFontDeclaration(value, oStyle) { - const match = value.match(reFontDeclaration); - if (!match) { - return; + return (!isArray && isNaN(parsed) ? value : parsed); + } + + /** + * @private + */ + function getSvgRegex(arr) { + return new RegExp('^(' + arr.join('|') + ')\\b', 'i'); + } + + /** + * @private + * @param {Object} attributes Array of attributes to parse + */ + function _setStrokeFillOpacity(attributes) { + for (var attr in colorAttributes) { + + if (typeof attributes[colorAttributes[attr]] === 'undefined' || attributes[attr] === '') { + continue; + } + + if (typeof attributes[attr] === 'undefined') { + if (!fabric.Object.prototype[attr]) { + continue; + } + attributes[attr] = fabric.Object.prototype[attr]; + } + + if (attributes[attr].indexOf('url(') === 0) { + continue; + } + + var color = new fabric.Color(attributes[attr]); + attributes[attr] = color.setAlpha(toFixed(color.getAlpha() * attributes[colorAttributes[attr]], 2)).toRgba(); } - const fontStyle = match[1], - // font variant is not used - // fontVariant = match[2], - fontWeight = match[3], fontSize = match[4], lineHeight = match[5], fontFamily = match[6]; - if (fontStyle) { - oStyle.fontStyle = fontStyle; + return attributes; + } + + /** + * @private + */ + function _getMultipleNodes(doc, nodeNames) { + var nodeName, nodeArray = [], nodeList, i, len; + for (i = 0, len = nodeNames.length; i < len; i++) { + nodeName = nodeNames[i]; + nodeList = doc.getElementsByTagName(nodeName); + nodeArray = nodeArray.concat(Array.prototype.slice.call(nodeList)); } - if (fontWeight) { - oStyle.fontWeight = isNaN(parseFloat(fontWeight)) - ? fontWeight - : parseFloat(fontWeight); + return nodeArray; + } + + /** + * Parses "transform" attribute, returning an array of values + * @static + * @function + * @memberOf fabric + * @param {String} attributeValue String containing attribute value + * @return {Array} Array of 6 elements representing transformation matrix + */ + fabric.parseTransformAttribute = (function() { + function rotateMatrix(matrix, args) { + var cos = fabric.util.cos(args[0]), sin = fabric.util.sin(args[0]), + x = 0, y = 0; + if (args.length === 3) { + x = args[1]; + y = args[2]; + } + + matrix[0] = cos; + matrix[1] = sin; + matrix[2] = -sin; + matrix[3] = cos; + matrix[4] = x - (cos * x - sin * y); + matrix[5] = y - (sin * x + cos * y); } - if (fontSize) { - oStyle.fontSize = parseUnit(fontSize); + + function scaleMatrix(matrix, args) { + var multiplierX = args[0], + multiplierY = (args.length === 2) ? args[1] : args[0]; + + matrix[0] = multiplierX; + matrix[3] = multiplierY; } - if (fontFamily) { - oStyle.fontFamily = fontFamily; + + function skewMatrix(matrix, args, pos) { + matrix[pos] = Math.tan(fabric.util.degreesToRadians(args[0])); } - if (lineHeight) { - oStyle.lineHeight = lineHeight === 'normal' ? 1 : lineHeight; + + function translateMatrix(matrix, args) { + matrix[4] = args[0]; + if (args.length === 2) { + matrix[5] = args[1]; + } } -} -//@ts-nocheck -function parseStyleObject(style, oStyle) { - let attr, value; - for (const prop in style) { - if (typeof style[prop] === 'undefined') { - continue; + // identity matrix + var iMatrix = fabric.iMatrix, + + // == begin transform regexp + number = fabric.reNum, + + commaWsp = fabric.commaWsp, + + skewX = '(?:(skewX)\\s*\\(\\s*(' + number + ')\\s*\\))', + + skewY = '(?:(skewY)\\s*\\(\\s*(' + number + ')\\s*\\))', + + rotate = '(?:(rotate)\\s*\\(\\s*(' + number + ')(?:' + + commaWsp + '(' + number + ')' + + commaWsp + '(' + number + '))?\\s*\\))', + + scale = '(?:(scale)\\s*\\(\\s*(' + number + ')(?:' + + commaWsp + '(' + number + '))?\\s*\\))', + + translate = '(?:(translate)\\s*\\(\\s*(' + number + ')(?:' + + commaWsp + '(' + number + '))?\\s*\\))', + + matrix = '(?:(matrix)\\s*\\(\\s*' + + '(' + number + ')' + commaWsp + + '(' + number + ')' + commaWsp + + '(' + number + ')' + commaWsp + + '(' + number + ')' + commaWsp + + '(' + number + ')' + commaWsp + + '(' + number + ')' + + '\\s*\\))', + + transform = '(?:' + + matrix + '|' + + translate + '|' + + scale + '|' + + rotate + '|' + + skewX + '|' + + skewY + + ')', + + transforms = '(?:' + transform + '(?:' + commaWsp + '*' + transform + ')*' + ')', + + transformList = '^\\s*(?:' + transforms + '?)\\s*$', + + // http://www.w3.org/TR/SVG/coords.html#TransformAttribute + reTransformList = new RegExp(transformList), + // == end transform regexp + + reTransform = new RegExp(transform, 'g'); + + return function(attributeValue) { + + // start with identity matrix + var matrix = iMatrix.concat(), + matrices = []; + + // return if no argument was given or + // an argument does not match transform attribute regexp + if (!attributeValue || (attributeValue && !reTransformList.test(attributeValue))) { + return matrix; + } + + attributeValue.replace(reTransform, function(match) { + + var m = new RegExp(transform).exec(match).filter(function (match) { + // match !== '' && match != null + return (!!match); + }), + operation = m[1], + args = m.slice(2).map(parseFloat); + + switch (operation) { + case 'translate': + translateMatrix(matrix, args); + break; + case 'rotate': + args[0] = fabric.util.degreesToRadians(args[0]); + rotateMatrix(matrix, args); + break; + case 'scale': + scaleMatrix(matrix, args); + break; + case 'skewX': + skewMatrix(matrix, args, 2); + break; + case 'skewY': + skewMatrix(matrix, args, 1); + break; + case 'matrix': + matrix = args; + break; } - attr = prop.toLowerCase(); - value = style[prop]; - oStyle[attr] = value; - } -} -//@ts-nocheck -function parseStyleString(style, oStyle) { - let attr, value; - style - .replace(/;\s*$/, '') - .split(';') - .forEach(function (chunk) { - const pair = chunk.split(':'); - attr = pair[0].trim().toLowerCase(); - value = pair[1].trim(); - oStyle[attr] = value; + // snapshot current matrix into matrices array + matrices.push(matrix.concat()); + // reset + matrix = iMatrix.concat(); + }); + + var combinedMatrix = matrices[0]; + while (matrices.length > 1) { + matrices.shift(); + combinedMatrix = fabric.util.multiplyTransformMatrices(combinedMatrix, matrices[0]); + } + return combinedMatrix; + }; + })(); + + /** + * @private + */ + function parseStyleString(style, oStyle) { + var attr, value; + style.replace(/;\s*$/, '').split(';').forEach(function (chunk) { + var pair = chunk.split(':'); + + attr = pair[0].trim().toLowerCase(); + value = pair[1].trim(); + + oStyle[attr] = value; }); -} + } -//@ts-nocheck -/** - * Parses "style" attribute, retuning an object with values - * @static - * @memberOf fabric - * @param {SVGElement} element Element to parse - * @return {Object} Objects with values parsed from style attribute of an element - */ -function parseStyleAttribute(element) { - const oStyle = {}, style = element.getAttribute('style'); - if (!style) { - return oStyle; + /** + * @private + */ + function parseStyleObject(style, oStyle) { + var attr, value; + for (var prop in style) { + if (typeof style[prop] === 'undefined') { + continue; + } + + attr = prop.toLowerCase(); + value = style[prop]; + + oStyle[attr] = value; } - if (typeof style === 'string') { - parseStyleString(style, oStyle); + } + + /** + * @private + */ + function getGlobalStylesForElement(element, svgUid) { + var styles = { }; + for (var rule in fabric.cssRules[svgUid]) { + if (elementMatchesRule(element, rule.split(' '))) { + for (var property in fabric.cssRules[svgUid][rule]) { + styles[property] = fabric.cssRules[svgUid][rule][property]; + } + } } - else { - parseStyleObject(style, oStyle); + return styles; + } + + /** + * @private + */ + function elementMatchesRule(element, selectors) { + var firstMatching, parentMatching = true; + //start from rightmost selector. + firstMatching = selectorMatches(element, selectors.pop()); + if (firstMatching && selectors.length) { + parentMatching = doesSomeParentMatch(element, selectors); } - return oStyle; -} + return firstMatching && parentMatching && (selectors.length === 0); + } -//@ts-nocheck -/** - * @private - * @param {Object} attributes Array of attributes to parse - */ -function setStrokeFillOpacity(attributes) { - for (const attr in colorAttributes) { - if (typeof attributes[colorAttributes[attr]] === 'undefined' || - attributes[attr] === '') { - continue; + function doesSomeParentMatch(element, selectors) { + var selector, parentMatching = true; + while (element.parentNode && element.parentNode.nodeType === 1 && selectors.length) { + if (parentMatching) { + selector = selectors.pop(); + } + element = element.parentNode; + parentMatching = selectorMatches(element, selector); + } + return selectors.length === 0; + } + + /** + * @private + */ + function selectorMatches(element, selector) { + var nodeName = element.nodeName, + classNames = element.getAttribute('class'), + id = element.getAttribute('id'), matcher, i; + // i check if a selector matches slicing away part from it. + // if i get empty string i should match + matcher = new RegExp('^' + nodeName, 'i'); + selector = selector.replace(matcher, ''); + if (id && selector.length) { + matcher = new RegExp('#' + id + '(?![a-zA-Z\\-]+)', 'i'); + selector = selector.replace(matcher, ''); + } + if (classNames && selector.length) { + classNames = classNames.split(' '); + for (i = classNames.length; i--;) { + matcher = new RegExp('\\.' + classNames[i] + '(?![a-zA-Z\\-]+)', 'i'); + selector = selector.replace(matcher, ''); + } + } + return selector.length === 0; + } + + /** + * @private + * to support IE8 missing getElementById on SVGdocument and on node xmlDOM + */ + function elementById(doc, id) { + var el; + doc.getElementById && (el = doc.getElementById(id)); + if (el) { + return el; + } + var node, i, len, nodelist = doc.getElementsByTagName('*'); + for (i = 0, len = nodelist.length; i < len; i++) { + node = nodelist[i]; + if (id === node.getAttribute('id')) { + return node; + } + } + } + + /** + * @private + */ + function parseUseDirectives(doc) { + var nodelist = _getMultipleNodes(doc, ['use', 'svg:use']), i = 0; + while (nodelist.length && i < nodelist.length) { + var el = nodelist[i], + xlinkAttribute = el.getAttribute('xlink:href') || el.getAttribute('href'); + + if (xlinkAttribute === null) { + return; + } + + var xlink = xlinkAttribute.substr(1), + x = el.getAttribute('x') || 0, + y = el.getAttribute('y') || 0, + el2 = elementById(doc, xlink).cloneNode(true), + currentTrans = (el2.getAttribute('transform') || '') + ' translate(' + x + ', ' + y + ')', + parentNode, + oldLength = nodelist.length, attr, + j, + attrs, + len, + namespace = fabric.svgNS; + + applyViewboxTransform(el2); + if (/^svg$/i.test(el2.nodeName)) { + var el3 = el2.ownerDocument.createElementNS(namespace, 'g'); + for (j = 0, attrs = el2.attributes, len = attrs.length; j < len; j++) { + attr = attrs.item(j); + el3.setAttributeNS(namespace, attr.nodeName, attr.nodeValue); } - if (typeof attributes[attr] === 'undefined') { - if (!fabric$1.Object.prototype[attr]) { - continue; - } - attributes[attr] = fabric$1.Object.prototype[attr]; + // el2.firstChild != null + while (el2.firstChild) { + el3.appendChild(el2.firstChild); } - if (attributes[attr].indexOf('url(') === 0) { - continue; + el2 = el3; + } + + for (j = 0, attrs = el.attributes, len = attrs.length; j < len; j++) { + attr = attrs.item(j); + if (attr.nodeName === 'x' || attr.nodeName === 'y' || + attr.nodeName === 'xlink:href' || attr.nodeName === 'href') { + continue; } - const color = new Color(attributes[attr]); - attributes[attr] = color - .setAlpha(toFixed(color.getAlpha() * attributes[colorAttributes[attr]], 2)) - .toRgba(); + + if (attr.nodeName === 'transform') { + currentTrans = attr.nodeValue + ' ' + currentTrans; + } + else { + el2.setAttribute(attr.nodeName, attr.nodeValue); + } + } + + el2.setAttribute('transform', currentTrans); + el2.setAttribute('instantiated_by_use', '1'); + el2.removeAttribute('id'); + parentNode = el.parentNode; + parentNode.replaceChild(el2, el); + // some browsers do not shorten nodelist after replaceChild (IE8) + if (nodelist.length === oldLength) { + i++; + } } - return attributes; -} + } -//@ts-nocheck -/** - * Returns an object of attributes' name/value, given element and an array of attribute names; - * Parses parent "g" nodes recursively upwards. - * @param {DOMElement} element Element to parse - * @param {Array} attributes Array of attributes to parse - * @return {Object} object containing parsed attributes' names/values - */ -function parseAttributes(element, attributes, svgUid) { - if (!element) { - return; + // http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute + // matches, e.g.: +14.56e-12, etc. + var reViewBoxAttrValue = new RegExp( + '^' + + '\\s*(' + fabric.reNum + '+)\\s*,?' + + '\\s*(' + fabric.reNum + '+)\\s*,?' + + '\\s*(' + fabric.reNum + '+)\\s*,?' + + '\\s*(' + fabric.reNum + '+)\\s*' + + '$' + ); + + /** + * Add a element that envelop all child elements and makes the viewbox transformMatrix descend on all elements + */ + function applyViewboxTransform(element) { + if (!fabric.svgViewBoxElementsRegEx.test(element.nodeName)) { + return {}; + } + var viewBoxAttr = element.getAttribute('viewBox'), + scaleX = 1, + scaleY = 1, + minX = 0, + minY = 0, + viewBoxWidth, viewBoxHeight, matrix, el, + widthAttr = element.getAttribute('width'), + heightAttr = element.getAttribute('height'), + x = element.getAttribute('x') || 0, + y = element.getAttribute('y') || 0, + preserveAspectRatio = element.getAttribute('preserveAspectRatio') || '', + missingViewBox = (!viewBoxAttr || !(viewBoxAttr = viewBoxAttr.match(reViewBoxAttrValue))), + missingDimAttr = (!widthAttr || !heightAttr || widthAttr === '100%' || heightAttr === '100%'), + toBeParsed = missingViewBox && missingDimAttr, + parsedDim = { }, translateMatrix = '', widthDiff = 0, heightDiff = 0; + + parsedDim.width = 0; + parsedDim.height = 0; + parsedDim.toBeParsed = toBeParsed; + + if (missingViewBox) { + if (((x || y) && element.parentNode && element.parentNode.nodeName !== '#document')) { + translateMatrix = ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') '; + matrix = (element.getAttribute('transform') || '') + translateMatrix; + element.setAttribute('transform', matrix); + element.removeAttribute('x'); + element.removeAttribute('y'); + } } - let value, parentAttributes = {}, fontSize, parentFontSize; - if (typeof svgUid === 'undefined') { - svgUid = element.getAttribute('svgUid'); + + if (toBeParsed) { + return parsedDim; } - // if there's a parent container (`g` or `a` or `symbol` node), parse its attributes recursively upwards - if (element.parentNode && - svgValidParentsRegEx.test(element.parentNode.nodeName)) { - parentAttributes = parseAttributes(element.parentNode, attributes, svgUid); + + if (missingViewBox) { + parsedDim.width = parseUnit(widthAttr); + parsedDim.height = parseUnit(heightAttr); + // set a transform for elements that have x y and are inner(only) SVGs + return parsedDim; } - let ownAttributes = attributes.reduce(function (memo, attr) { - value = element.getAttribute(attr); - if (value) { - // eslint-disable-line - memo[attr] = value; - } - return memo; - }, {}); - // add values parsed from style, which take precedence over attributes - // (see: http://www.w3.org/TR/SVG/styling.html#UsingPresentationAttributes) - const cssAttrs = Object.assign(getGlobalStylesForElement(element, svgUid), parseStyleAttribute(element)); - ownAttributes = Object.assign(ownAttributes, cssAttrs); - if (cssAttrs[cPath]) { - element.setAttribute(cPath, cssAttrs[cPath]); + minX = -parseFloat(viewBoxAttr[1]); + minY = -parseFloat(viewBoxAttr[2]); + viewBoxWidth = parseFloat(viewBoxAttr[3]); + viewBoxHeight = parseFloat(viewBoxAttr[4]); + parsedDim.minX = minX; + parsedDim.minY = minY; + parsedDim.viewBoxWidth = viewBoxWidth; + parsedDim.viewBoxHeight = viewBoxHeight; + if (!missingDimAttr) { + parsedDim.width = parseUnit(widthAttr); + parsedDim.height = parseUnit(heightAttr); + scaleX = parsedDim.width / viewBoxWidth; + scaleY = parsedDim.height / viewBoxHeight; } - fontSize = parentFontSize = - parentAttributes.fontSize || DEFAULT_SVG_FONT_SIZE; - if (ownAttributes[fSize]) { - // looks like the minimum should be 9px when dealing with ems. this is what looks like in browsers. - ownAttributes[fSize] = fontSize = parseUnit(ownAttributes[fSize], parentFontSize); + else { + parsedDim.width = viewBoxWidth; + parsedDim.height = viewBoxHeight; } - let normalizedAttr, normalizedValue, normalizedStyle = {}; - for (const attr in ownAttributes) { - normalizedAttr = normalizeAttr(attr); - normalizedValue = normalizeValue(normalizedAttr, ownAttributes[attr], parentAttributes, fontSize); - normalizedStyle[normalizedAttr] = normalizedValue; + + // default is to preserve aspect ratio + preserveAspectRatio = fabric.util.parsePreserveAspectRatioAttribute(preserveAspectRatio); + if (preserveAspectRatio.alignX !== 'none') { + //translate all container for the effect of Mid, Min, Max + if (preserveAspectRatio.meetOrSlice === 'meet') { + scaleY = scaleX = (scaleX > scaleY ? scaleY : scaleX); + // calculate additional translation to move the viewbox + } + if (preserveAspectRatio.meetOrSlice === 'slice') { + scaleY = scaleX = (scaleX > scaleY ? scaleX : scaleY); + // calculate additional translation to move the viewbox + } + widthDiff = parsedDim.width - viewBoxWidth * scaleX; + heightDiff = parsedDim.height - viewBoxHeight * scaleX; + if (preserveAspectRatio.alignX === 'Mid') { + widthDiff /= 2; + } + if (preserveAspectRatio.alignY === 'Mid') { + heightDiff /= 2; + } + if (preserveAspectRatio.alignX === 'Min') { + widthDiff = 0; + } + if (preserveAspectRatio.alignY === 'Min') { + heightDiff = 0; + } + } + + if (scaleX === 1 && scaleY === 1 && minX === 0 && minY === 0 && x === 0 && y === 0) { + return parsedDim; } - if (normalizedStyle && normalizedStyle.font) { - parseFontDeclaration(normalizedStyle.font, normalizedStyle); + if ((x || y) && element.parentNode.nodeName !== '#document') { + translateMatrix = ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') '; } - const mergedAttrs = Object.assign(parentAttributes, normalizedStyle); - return svgValidParentsRegEx.test(element.nodeName) - ? mergedAttrs - : setStrokeFillOpacity(mergedAttrs); -} -//@ts-nocheck -/** - * Parses "points" attribute, returning an array of values - * @static - * @memberOf fabric - * @param {String} points points attribute string - * @return {Array} array of points - */ -function parsePointsAttribute(points) { - // points attribute is required and must not be empty - if (!points) { - return null; + matrix = translateMatrix + ' matrix(' + scaleX + + ' 0' + + ' 0 ' + + scaleY + ' ' + + (minX * scaleX + widthDiff) + ' ' + + (minY * scaleY + heightDiff) + ') '; + // seems unused. + // parsedDim.viewboxTransform = fabric.parseTransformAttribute(matrix); + if (element.nodeName === 'svg') { + el = element.ownerDocument.createElementNS(fabric.svgNS, 'g'); + // element.firstChild != null + while (element.firstChild) { + el.appendChild(element.firstChild); + } + element.appendChild(el); } - // replace commas with whitespace and remove bookending whitespace - points = points.replace(/,/g, ' ').trim(); - points = points.split(/\s+/); - let parsedPoints = [], i, len; - for (i = 0, len = points.length; i < len; i += 2) { - parsedPoints.push({ - x: parseFloat(points[i]), - y: parseFloat(points[i + 1]), - }); + else { + el = element; + el.removeAttribute('x'); + el.removeAttribute('y'); + matrix = el.getAttribute('transform') + matrix; } - // odd number of points is an error - // if (parsedPoints.length % 2 !== 0) { - // return null; - // } - return parsedPoints; -} + el.setAttribute('transform', matrix); + return parsedDim; + } -//@ts-nocheck -Object.assign(fabric$1, { - cssRules, - gradientDefs, - clipPaths, - parseTransformAttribute, - parseSVGDocument, - parseFontDeclaration, - getGradientDefs, - parseAttributes, - parseElements, - parseStyleAttribute, - parsePointsAttribute, - getCSSRules, - loadSVGFromURL, - loadSVGFromString, - ElementsParser, -}); + function hasAncestorWithNodeName(element, nodeName) { + while (element && (element = element.parentNode)) { + if (element.nodeName && nodeName.test(element.nodeName.replace('svg:', '')) + && !element.getAttribute('instantiated_by_use')) { + return true; + } + } + return false; + } -//@ts-nocheck -/** - * **Assuming `T`, `A`, `B` are points on the same line**, - * check if `T` is contained in `[A, B]` by comparing the direction of the vectors from `T` to `A` and `B` - * @param T - * @param A - * @param B - * @returns true if `T` is contained - */ -const isContainedInInterval = (T, A, B) => { - const TA = new Point(T).subtract(A); - const TB = new Point(T).subtract(B); - return (Math.sign(TA.x) !== Math.sign(TB.x) || Math.sign(TA.y) !== Math.sign(TB.y)); -}; -class Intersection { - constructor(status) { - this.status = status; - this.points = []; + /** + * Parses an SVG document, converts it to an array of corresponding fabric.* instances and passes them to a callback + * @static + * @function + * @memberOf fabric + * @param {SVGDocument} doc SVG document to parse + * @param {Function} callback Callback to call when parsing is finished; + * It's being passed an array of elements (parsed from a document). + * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. + * @param {Object} [parsingOptions] options for parsing document + * @param {String} [parsingOptions.crossOrigin] crossOrigin settings + */ + fabric.parseSVGDocument = function(doc, callback, reviver, parsingOptions) { + if (!doc) { + return; } - /** - * - * @param {Point} point - * @returns - */ - contains(point) { - return this.points.some((p) => p.eq(point)); + + parseUseDirectives(doc); + + var svgUid = fabric.Object.__uid++, i, len, + options = applyViewboxTransform(doc), + descendants = fabric.util.toArray(doc.getElementsByTagName('*')); + options.crossOrigin = parsingOptions && parsingOptions.crossOrigin; + options.svgUid = svgUid; + + if (descendants.length === 0 && fabric.isLikelyNode) { + // we're likely in node, where "o3-xml" library fails to gEBTN("*") + // https://github.com/ajaxorg/node-o3-xml/issues/21 + descendants = doc.selectNodes('//*[name(.)!="svg"]'); + var arr = []; + for (i = 0, len = descendants.length; i < len; i++) { + arr[i] = descendants[i]; + } + descendants = arr; } - /** - * Appends points of intersection - * @param {...Point[]} points - * @return {Intersection} thisArg - * @chainable - */ - append(...points) { - this.points = this.points.concat(points.filter((point) => { - return !this.contains(point); - })); - return this; + + var elements = descendants.filter(function(el) { + applyViewboxTransform(el); + return fabric.svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')) && + !hasAncestorWithNodeName(el, fabric.svgInvalidAncestorsRegEx); // http://www.w3.org/TR/SVG/struct.html#DefsElement + }); + if (!elements || (elements && !elements.length)) { + callback && callback([], {}); + return; + } + var clipPaths = { }; + descendants.filter(function(el) { + return el.nodeName.replace('svg:', '') === 'clipPath'; + }).forEach(function(el) { + var id = el.getAttribute('id'); + clipPaths[id] = fabric.util.toArray(el.getElementsByTagName('*')).filter(function(el) { + return fabric.svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')); + }); + }); + fabric.gradientDefs[svgUid] = fabric.getGradientDefs(doc); + fabric.cssRules[svgUid] = fabric.getCSSRules(doc); + fabric.clipPaths[svgUid] = clipPaths; + // Precedence of rules: style > class > attribute + fabric.parseElements(elements, function(instances, elements) { + if (callback) { + callback(instances, options, elements, descendants); + delete fabric.gradientDefs[svgUid]; + delete fabric.cssRules[svgUid]; + delete fabric.clipPaths[svgUid]; + } + }, clone(options), reviver, parsingOptions); + }; + + function recursivelyParseGradientsXlink(doc, gradient) { + var gradientsAttrs = ['gradientTransform', 'x1', 'x2', 'y1', 'y2', 'gradientUnits', 'cx', 'cy', 'r', 'fx', 'fy'], + xlinkAttr = 'xlink:href', + xLink = gradient.getAttribute(xlinkAttr).substr(1), + referencedGradient = elementById(doc, xLink); + if (referencedGradient && referencedGradient.getAttribute(xlinkAttr)) { + recursivelyParseGradientsXlink(doc, referencedGradient); + } + gradientsAttrs.forEach(function(attr) { + if (referencedGradient && !gradient.hasAttribute(attr) && referencedGradient.hasAttribute(attr)) { + gradient.setAttribute(attr, referencedGradient.getAttribute(attr)); + } + }); + if (!gradient.children.length) { + var referenceClone = referencedGradient.cloneNode(true); + while (referenceClone.firstChild) { + gradient.appendChild(referenceClone.firstChild); + } } + gradient.removeAttribute(xlinkAttr); + } + + var reFontDeclaration = new RegExp( + '(normal|italic)?\\s*(normal|small-caps)?\\s*' + + '(normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900)?\\s*(' + + fabric.reNum + + '(?:px|cm|mm|em|pt|pc|in)*)(?:\\/(normal|' + fabric.reNum + '))?\\s+(.*)'); + + extend(fabric, { /** - * Checks if a line intersects another + * Parses a short font declaration, building adding its properties to a style object * @static - * @param {Point} a1 - * @param {Point} a2 - * @param {Point} b1 - * @param {Point} b2 - * @param {boolean} [aInfinite=true] check segment intersection by passing `false` - * @param {boolean} [bInfinite=true] check segment intersection by passing `false` - * @return {Intersection} - */ - static intersectLineLine(a1, a2, b1, b2, aInfinite = true, bInfinite = true) { - let result; - const uaT = (b2.x - b1.x) * (a1.y - b1.y) - (b2.y - b1.y) * (a1.x - b1.x), ubT = (a2.x - a1.x) * (a1.y - b1.y) - (a2.y - a1.y) * (a1.x - b1.x), uB = (b2.y - b1.y) * (a2.x - a1.x) - (b2.x - b1.x) * (a2.y - a1.y); - if (uB !== 0) { - const ua = uaT / uB, ub = ubT / uB; - if ((aInfinite || (0 <= ua && ua <= 1)) && - (bInfinite || (0 <= ub && ub <= 1))) { - result = new Intersection('Intersection'); - result.append(new Point(a1.x + ua * (a2.x - a1.x), a1.y + ua * (a2.y - a1.y))); - } - else { - result = new Intersection(); - } - } - else { - if (uaT === 0 || ubT === 0) { - const segmentsCoincide = aInfinite || - bInfinite || - isContainedInInterval(a1, b1, b2) || - isContainedInInterval(a2, b1, b2) || - isContainedInInterval(b1, a1, a2) || - isContainedInInterval(b2, a1, a2); - result = new Intersection(segmentsCoincide ? 'Coincident' : undefined); - } - else { - result = new Intersection('Parallel'); - } + * @function + * @memberOf fabric + * @param {String} value font declaration + * @param {Object} oStyle definition + */ + parseFontDeclaration: function(value, oStyle) { + var match = value.match(reFontDeclaration); + + if (!match) { + return; + } + var fontStyle = match[1], + // font variant is not used + // fontVariant = match[2], + fontWeight = match[3], + fontSize = match[4], + lineHeight = match[5], + fontFamily = match[6]; + + if (fontStyle) { + oStyle.fontStyle = fontStyle; + } + if (fontWeight) { + oStyle.fontWeight = isNaN(parseFloat(fontWeight)) ? fontWeight : parseFloat(fontWeight); + } + if (fontSize) { + oStyle.fontSize = parseUnit(fontSize); + } + if (fontFamily) { + oStyle.fontFamily = fontFamily; + } + if (lineHeight) { + oStyle.lineHeight = lineHeight === 'normal' ? 1 : lineHeight; + } + }, + + /** + * Parses an SVG document, returning all of the gradient declarations found in it + * @static + * @function + * @memberOf fabric + * @param {SVGDocument} doc SVG document to parse + * @return {Object} Gradient definitions; key corresponds to element id, value -- to gradient definition element + */ + getGradientDefs: function(doc) { + var tagArray = [ + 'linearGradient', + 'radialGradient', + 'svg:linearGradient', + 'svg:radialGradient'], + elList = _getMultipleNodes(doc, tagArray), + el, j = 0, gradientDefs = { }; + j = elList.length; + while (j--) { + el = elList[j]; + if (el.getAttribute('xlink:href')) { + recursivelyParseGradientsXlink(doc, el); } - return result; - } + gradientDefs[el.getAttribute('id')] = el; + } + return gradientDefs; + }, + /** - * Checks if a segment intersects a line - * @see {@link intersectLineLine} for line intersection + * Returns an object of attributes' name/value, given element and an array of attribute names; + * Parses parent "g" nodes recursively upwards. * @static - * @param {Point} s1 boundary point of segment - * @param {Point} s2 other boundary point of segment - * @param {Point} l1 point on line - * @param {Point} l2 other point on line - * @return {Intersection} + * @memberOf fabric + * @param {DOMElement} element Element to parse + * @param {Array} attributes Array of attributes to parse + * @return {Object} object containing parsed attributes' names/values */ - static intersectSegmentLine(s1, s2, l1, l2) { - return Intersection.intersectLineLine(s1, s2, l1, l2, false, true); - } + parseAttributes: function(element, attributes, svgUid) { + + if (!element) { + return; + } + + var value, + parentAttributes = { }, + fontSize, parentFontSize; + + if (typeof svgUid === 'undefined') { + svgUid = element.getAttribute('svgUid'); + } + // if there's a parent container (`g` or `a` or `symbol` node), parse its attributes recursively upwards + if (element.parentNode && fabric.svgValidParentsRegEx.test(element.parentNode.nodeName)) { + parentAttributes = fabric.parseAttributes(element.parentNode, attributes, svgUid); + } + + var ownAttributes = attributes.reduce(function(memo, attr) { + value = element.getAttribute(attr); + if (value) { // eslint-disable-line + memo[attr] = value; + } + return memo; + }, { }); + // add values parsed from style, which take precedence over attributes + // (see: http://www.w3.org/TR/SVG/styling.html#UsingPresentationAttributes) + var cssAttrs = extend( + getGlobalStylesForElement(element, svgUid), + fabric.parseStyleAttribute(element) + ); + ownAttributes = extend( + ownAttributes, + cssAttrs + ); + if (cssAttrs[cPath]) { + element.setAttribute(cPath, cssAttrs[cPath]); + } + fontSize = parentFontSize = parentAttributes.fontSize || fabric.Text.DEFAULT_SVG_FONT_SIZE; + if (ownAttributes[fSize]) { + // looks like the minimum should be 9px when dealing with ems. this is what looks like in browsers. + ownAttributes[fSize] = fontSize = parseUnit(ownAttributes[fSize], parentFontSize); + } + + var normalizedAttr, normalizedValue, normalizedStyle = {}; + for (var attr in ownAttributes) { + normalizedAttr = normalizeAttr(attr); + normalizedValue = normalizeValue(normalizedAttr, ownAttributes[attr], parentAttributes, fontSize); + normalizedStyle[normalizedAttr] = normalizedValue; + } + if (normalizedStyle && normalizedStyle.font) { + fabric.parseFontDeclaration(normalizedStyle.font, normalizedStyle); + } + var mergedAttrs = extend(parentAttributes, normalizedStyle); + return fabric.svgValidParentsRegEx.test(element.nodeName) ? mergedAttrs : _setStrokeFillOpacity(mergedAttrs); + }, + /** - * Checks if a segment intersects another - * @see {@link intersectLineLine} for line intersection + * Transforms an array of svg elements to corresponding fabric.* instances * @static - * @param {Point} a1 boundary point of segment - * @param {Point} a2 other boundary point of segment - * @param {Point} b1 boundary point of segment - * @param {Point} b2 other boundary point of segment - * @return {Intersection} + * @memberOf fabric + * @param {Array} elements Array of elements to parse + * @param {Function} callback Being passed an array of fabric instances (transformed from SVG elements) + * @param {Object} [options] Options object + * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. */ - static intersectSegmentSegment(a1, a2, b1, b2) { - return Intersection.intersectLineLine(a1, a2, b1, b2, false, false); - } + parseElements: function(elements, callback, options, reviver, parsingOptions) { + new fabric.ElementsParser(elements, callback, options, reviver, parsingOptions).parse(); + }, + /** - * Checks if line intersects polygon - * - * @todo account for stroke - * + * Parses "style" attribute, retuning an object with values * @static - * @see {@link intersectSegmentPolygon} for segment intersection - * @param {Point} a1 point on line - * @param {Point} a2 other point on line - * @param {Point[]} points polygon points - * @param {boolean} [infinite=true] check segment intersection by passing `false` - * @return {Intersection} - */ - static intersectLinePolygon(a1, a2, points, infinite = true) { - const result = new Intersection(); - const length = points.length; - for (let i = 0, b1, b2, inter; i < length; i++) { - b1 = points[i]; - b2 = points[(i + 1) % length]; - inter = Intersection.intersectLineLine(a1, a2, b1, b2, infinite, false); - if (inter.status === 'Coincident') { - return inter; - } - result.append(...inter.points); - } - if (result.points.length > 0) { - result.status = 'Intersection'; - } - return result; - } + * @memberOf fabric + * @param {SVGElement} element Element to parse + * @return {Object} Objects with values parsed from style attribute of an element + */ + parseStyleAttribute: function(element) { + var oStyle = { }, + style = element.getAttribute('style'); + + if (!style) { + return oStyle; + } + + if (typeof style === 'string') { + parseStyleString(style, oStyle); + } + else { + parseStyleObject(style, oStyle); + } + + return oStyle; + }, + /** - * Checks if segment intersects polygon + * Parses "points" attribute, returning an array of values * @static - * @see {@link intersectLinePolygon} for line intersection - * @param {Point} a1 boundary point of segment - * @param {Point} a2 other boundary point of segment - * @param {Point[]} points polygon points - * @return {Intersection} + * @memberOf fabric + * @param {String} points points attribute string + * @return {Array} array of points */ - static intersectSegmentPolygon(a1, a2, points) { - return Intersection.intersectLinePolygon(a1, a2, points, false); - } + parsePointsAttribute: function(points) { + + // points attribute is required and must not be empty + if (!points) { + return null; + } + + // replace commas with whitespace and remove bookending whitespace + points = points.replace(/,/g, ' ').trim(); + + points = points.split(/\s+/); + var parsedPoints = [], i, len; + + for (i = 0, len = points.length; i < len; i += 2) { + parsedPoints.push({ + x: parseFloat(points[i]), + y: parseFloat(points[i + 1]) + }); + } + + // odd number of points is an error + // if (parsedPoints.length % 2 !== 0) { + // return null; + // } + + return parsedPoints; + }, + /** - * Checks if polygon intersects another polygon - * - * @todo account for stroke - * + * Returns CSS rules for a given SVG document * @static - * @param {Point[]} points1 - * @param {Point[]} points2 - * @return {Intersection} - */ - static intersectPolygonPolygon(points1, points2) { - const result = new Intersection(), length = points1.length; - const coincidences = []; - for (let i = 0; i < length; i++) { - const a1 = points1[i], a2 = points1[(i + 1) % length], inter = Intersection.intersectSegmentPolygon(a1, a2, points2); - if (inter.status === 'Coincident') { - coincidences.push(inter); - result.append(a1, a2); + * @function + * @memberOf fabric + * @param {SVGDocument} doc SVG document to parse + * @return {Object} CSS rules of this document + */ + getCSSRules: function(doc) { + var styles = doc.getElementsByTagName('style'), i, len, + allRules = { }, rules; + + // very crude parsing of style contents + for (i = 0, len = styles.length; i < len; i++) { + var styleContents = styles[i].textContent; + + // remove comments + styleContents = styleContents.replace(/\/\*[\s\S]*?\*\//g, ''); + if (styleContents.trim() === '') { + continue; + } + // recovers all the rule in this form `body { style code... }` + // rules = styleContents.match(/[^{]*\{[\s\S]*?\}/g); + rules = styleContents.split('}'); + // remove empty rules. + rules = rules.filter(function(rule) { return rule.trim(); }); + // at this point we have hopefully an array of rules `body { style code... ` + // eslint-disable-next-line no-loop-func + rules.forEach(function(rule) { + + var match = rule.split('{'), + ruleObj = { }, declaration = match[1].trim(), + propertyValuePairs = declaration.split(';').filter(function(pair) { return pair.trim(); }); + + for (i = 0, len = propertyValuePairs.length; i < len; i++) { + var pair = propertyValuePairs[i].split(':'), + property = pair[0].trim(), + value = pair[1].trim(); + ruleObj[property] = value; + } + rule = match[0].trim(); + rule.split(',').forEach(function(_rule) { + _rule = _rule.replace(/^svg/i, '').trim(); + if (_rule === '') { + return; + } + if (allRules[_rule]) { + fabric.util.object.extend(allRules[_rule], ruleObj); } else { - result.append(...inter.points); + allRules[_rule] = fabric.util.object.clone(ruleObj); } + }); + }); + } + return allRules; + }, + + /** + * Takes url corresponding to an SVG document, and parses it into a set of fabric objects. + * Note that SVG is fetched via XMLHttpRequest, so it needs to conform to SOP (Same Origin Policy) + * @memberOf fabric + * @param {String} url + * @param {Function} callback + * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. + * @param {Object} [options] Object containing options for parsing + * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources + */ + loadSVGFromURL: function(url, callback, reviver, options) { + + url = url.replace(/^\n\s*/, '').trim(); + new fabric.util.request(url, { + method: 'get', + onComplete: onComplete + }); + + function onComplete(r) { + + var xml = r.responseXML; + if (!xml || !xml.documentElement) { + callback && callback(null); + return false; } - if (coincidences.length > 0 && coincidences.length === points1.length) { - return new Intersection('Coincident'); - } - else if (result.points.length > 0) { - result.status = 'Intersection'; - } - return result; - } + + fabric.parseSVGDocument(xml.documentElement, function (results, _options, elements, allElements) { + callback && callback(results, _options, elements, allElements); + }, reviver, options); + } + }, + /** - * Checks if polygon intersects rectangle - * @static - * @see {@link intersectPolygonPolygon} for polygon intersection - * @param {Point[]} points polygon points - * @param {Point} r1 top left point of rect - * @param {Point} r2 bottom right point of rect - * @return {Intersection} - */ - static intersectPolygonRectangle(points, r1, r2) { - const min = r1.min(r2), max = r1.max(r2), topRight = new Point(max.x, min.y), bottomLeft = new Point(min.x, max.y); - return Intersection.intersectPolygonPolygon(points, [ - min, - topRight, - max, - bottomLeft, - ]); + * Takes string corresponding to an SVG document, and parses it into a set of fabric objects + * @memberOf fabric + * @param {String} string + * @param {Function} callback + * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created. + * @param {Object} [options] Object containing options for parsing + * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources + */ + loadSVGFromString: function(string, callback, reviver, options) { + var parser = new fabric.window.DOMParser(), + doc = parser.parseFromString(string.trim(), 'text/xml'); + fabric.parseSVGDocument(doc.documentElement, function (results, _options, elements, allElements) { + callback(results, _options, elements, allElements); + }, reviver, options); } -} -fabric$1.Intersection = Intersection; + }); -const linearDefaultCoords = { - x1: 0, - y1: 0, - x2: 0, - y2: 0, +})(typeof exports !== 'undefined' ? exports : this); + + +fabric.ElementsParser = function(elements, callback, options, reviver, parsingOptions, doc) { + this.elements = elements; + this.callback = callback; + this.options = options; + this.reviver = reviver; + this.svgUid = (options && options.svgUid) || 0; + this.parsingOptions = parsingOptions; + this.regexUrl = /^url\(['"]?#([^'"]+)['"]?\)/g; + this.doc = doc; }; -const radialDefaultCoords = Object.assign(Object.assign({}, linearDefaultCoords), { r1: 0, r2: 0 }); -function parseType(el) { - return el.nodeName === 'linearGradient' || el.nodeName === 'LINEARGRADIENT' - ? 'linear' - : 'radial'; -} -function parseGradientUnits(el) { - return el.getAttribute('gradientUnits') === 'userSpaceOnUse' - ? 'pixels' - : 'percentage'; -} +(function(proto) { + proto.parse = function() { + this.instances = new Array(this.elements.length); + this.numElements = this.elements.length; + this.createObjects(); + }; -const RE_PERCENT = /^(\d+\.\d+)%|(\d+)%$/; -function isPercent(value) { - return value && RE_PERCENT.test(value); -} -/** - * - * @param value - * @param valueIfNaN - * @returns ∈ [0, 1] - */ -function parsePercent(value, valueIfNaN) { - const parsed = typeof value === 'number' - ? value - : typeof value === 'string' - ? parseFloat(value) / (isPercent(value) ? 100 : 1) - : NaN; - return capValue(0, ifNaN(parsed, valueIfNaN), 1); -} + proto.createObjects = function() { + var _this = this; + this.elements.forEach(function(element, i) { + element.setAttribute('svgUid', _this.svgUid); + _this.createObject(element, i); + }); + }; -const RE_KEY_VALUE_PAIRS = /\s*;\s*/; -const RE_KEY_VALUE = /\s*:\s*/; -function parseColorStop(el, multiplier) { - let colorValue, opacity; - const style = el.getAttribute('style'); - if (style) { - const keyValuePairs = style.split(RE_KEY_VALUE_PAIRS); - if (keyValuePairs[keyValuePairs.length - 1] === '') { - keyValuePairs.pop(); - } - for (let i = keyValuePairs.length; i--;) { - const [key, value] = keyValuePairs[i] - .split(RE_KEY_VALUE) - .map((s) => s.trim()); - if (key === 'stop-color') { - colorValue = value; - } - else if (key === 'stop-opacity') { - opacity = value; - } - } + proto.findTag = function(el) { + return fabric[fabric.util.string.capitalize(el.tagName.replace('svg:', ''))]; + }; + + proto.createObject = function(el, index) { + var klass = this.findTag(el); + if (klass && klass.fromElement) { + try { + klass.fromElement(el, this.createCallback(index, el), this.options); + } + catch (err) { + fabric.log(err); + } } - const color = new Color(colorValue || el.getAttribute('stop-color') || 'rgb(0,0,0)'); - return { - offset: parsePercent(el.getAttribute('offset'), 0), - color: color.toRgb(), - opacity: ifNaN(parseFloat(opacity || el.getAttribute('stop-opacity') || ''), 1) * - color.getAlpha() * - multiplier, - }; -} -function parseColorStops(el, opacityAttr) { - const colorStops = [], colorStopEls = el.getElementsByTagName('stop'), multiplier = parsePercent(opacityAttr, 1); - for (let i = colorStopEls.length; i--;) { - colorStops.push(parseColorStop(colorStopEls[i], multiplier)); + else { + this.checkIfDone(); } - return colorStops; -} + }; -function convertPercentUnitsToValues(valuesToConvert, { width, height, gradientUnits }) { - let finalValue; - return Object.keys(valuesToConvert).reduce((acc, prop) => { - const propValue = valuesToConvert[prop]; - if (propValue === 'Infinity') { - finalValue = 1; - } - else if (propValue === '-Infinity') { - finalValue = 0; - } - else { - finalValue = - typeof propValue === 'string' ? parseFloat(propValue) : propValue; - if (typeof propValue === 'string' && isPercent(propValue)) { - finalValue *= 0.01; - if (gradientUnits === 'pixels') { - // then we need to fix those percentages here in svg parsing - if (prop === 'x1' || prop === 'x2' || prop === 'r2') { - finalValue *= width; - } - if (prop === 'y1' || prop === 'y2') { - finalValue *= height; - } - } - } - } - acc[prop] = finalValue; - return acc; - }, {}); -} -function getValue(el, key) { - return el.getAttribute(key); -} -function parseLinearCoords(el) { - return { - x1: getValue(el, 'x1') || 0, - y1: getValue(el, 'y1') || 0, - x2: getValue(el, 'x2') || '100%', - y2: getValue(el, 'y2') || 0, + proto.createCallback = function(index, el) { + var _this = this; + return function(obj) { + var _options; + _this.resolveGradient(obj, el, 'fill'); + _this.resolveGradient(obj, el, 'stroke'); + if (obj instanceof fabric.Image && obj._originalElement) { + _options = obj.parsePreserveAspectRatioAttribute(el); + } + obj._removeTransformMatrix(_options); + _this.resolveClipPath(obj, el); + _this.reviver && _this.reviver(el, obj); + _this.instances[index] = obj; + _this.checkIfDone(); }; -} -function parseRadialCoords(el) { - return { - x1: getValue(el, 'fx') || getValue(el, 'cx') || '50%', - y1: getValue(el, 'fy') || getValue(el, 'cy') || '50%', - r1: 0, - x2: getValue(el, 'cx') || '50%', - y2: getValue(el, 'cy') || '50%', - r2: getValue(el, 'r') || '50%', + }; + + proto.extractPropertyDefinition = function(obj, property, storage) { + var value = obj[property], regex = this.regexUrl; + if (!regex.test(value)) { + return; + } + regex.lastIndex = 0; + var id = regex.exec(value)[1]; + regex.lastIndex = 0; + return fabric[storage][this.svgUid][id]; + }; + + proto.resolveGradient = function(obj, el, property) { + var gradientDef = this.extractPropertyDefinition(obj, property, 'gradientDefs'); + if (gradientDef) { + var opacityAttr = el.getAttribute(property + '-opacity'); + var gradient = fabric.Gradient.fromElement(gradientDef, obj, opacityAttr, this.options); + obj.set(property, gradient); + } + }; + + proto.createClipPathCallback = function(obj, container) { + return function(_newObj) { + _newObj._removeTransformMatrix(); + _newObj.fillRule = _newObj.clipRule; + container.push(_newObj); }; -} -function parseCoords(el, size) { - return convertPercentUnitsToValues(parseType(el) === 'linear' ? parseLinearCoords(el) : parseRadialCoords(el), Object.assign(Object.assign({}, size), { gradientUnits: parseGradientUnits(el) })); -} + }; -/** - * Gradient class - * @class Gradient - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#gradients} - */ -class Gradient { - constructor({ type = 'linear', gradientUnits = 'pixels', coords, colorStops = [], offsetX = 0, offsetY = 0, gradientTransform, id, }) { - /** - * Horizontal offset for aligning gradients coming from SVG when outside pathgroups - * @type Number - * @default 0 - */ - this.offsetX = 0; - /** - * Vertical offset for aligning gradients coming from SVG when outside pathgroups - * @type Number - * @default 0 - */ - this.offsetY = 0; - /** - * A transform matrix to apply to the gradient before painting. - * Imported from svg gradients, is not applied with the current transform in the center. - * Before this transform is applied, the origin point is at the top left corner of the object - * plus the addition of offsetY and offsetX. - * @type Number[] - * @default null - */ - this.gradientTransform = null; - const uid = fabric$1.Object.__uid++; - this.id = id ? `${id}_${uid}` : uid; - this.type = type; - this.gradientUnits = gradientUnits; - this.gradientTransform = gradientTransform || null; - this.offsetX = offsetX; - this.offsetY = offsetY; - this.coords = Object.assign(Object.assign({}, (this.type === 'radial' ? radialDefaultCoords : linearDefaultCoords)), coords); - this.colorStops = colorStops.slice(); - } - // isType(type: S): this is Gradient { - // return (this.type as GradientType) === type; - // } - /** - * Adds another colorStop - * @param {Record} colorStop Object with offset and color - * @return {Gradient} thisArg - */ - addColorStop(colorStops) { - for (const position in colorStops) { - const color = new Color(colorStops[position]); - this.colorStops.push({ - offset: parseFloat(position), - color: color.toRgb(), - opacity: color.getAlpha(), - }); - } - return this; + proto.resolveClipPath = function(obj, usingElement) { + var clipPath = this.extractPropertyDefinition(obj, 'clipPath', 'clipPaths'), + element, klass, objTransformInv, container, gTransform, options; + if (clipPath) { + container = []; + objTransformInv = fabric.util.invertTransform(obj.calcTransformMatrix()); + // move the clipPath tag as sibling to the real element that is using it + var clipPathTag = clipPath[0].parentNode; + var clipPathOwner = usingElement; + while (clipPathOwner.parentNode && clipPathOwner.getAttribute('clip-path') !== obj.clipPath) { + clipPathOwner = clipPathOwner.parentNode; + } + clipPathOwner.parentNode.appendChild(clipPathTag); + for (var i = 0; i < clipPath.length; i++) { + element = clipPath[i]; + klass = this.findTag(element); + klass.fromElement( + element, + this.createClipPathCallback(obj, container), + this.options + ); + } + if (container.length === 1) { + clipPath = container[0]; + } + else { + clipPath = new fabric.Group(container); + } + gTransform = fabric.util.multiplyTransformMatrices( + objTransformInv, + clipPath.calcTransformMatrix() + ); + if (clipPath.clipPath) { + this.resolveClipPath(clipPath, clipPathOwner); + } + var options = fabric.util.qrDecompose(gTransform); + clipPath.flipX = false; + clipPath.flipY = false; + clipPath.set('scaleX', options.scaleX); + clipPath.set('scaleY', options.scaleY); + clipPath.angle = options.angle; + clipPath.skewX = options.skewX; + clipPath.skewY = 0; + clipPath.setPositionByOrigin({ x: options.translateX, y: options.translateY }, 'center', 'center'); + obj.clipPath = clipPath; } - /** - * Returns object representation of a gradient - * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {object} - */ - toObject(propertiesToInclude) { - return Object.assign(Object.assign({}, pick(this, propertiesToInclude)), { type: this.type, coords: this.coords, colorStops: this.colorStops, offsetX: this.offsetX, offsetY: this.offsetY, gradientUnits: this.gradientUnits, gradientTransform: this.gradientTransform - ? this.gradientTransform.concat() - : this.gradientTransform }); + else { + // if clip-path does not resolve to any element, delete the property. + delete obj.clipPath; } - /* _TO_SVG_START_ */ + }; + + proto.checkIfDone = function() { + if (--this.numElements === 0) { + this.instances = this.instances.filter(function(el) { + // eslint-disable-next-line no-eq-null, eqeqeq + return el != null; + }); + this.callback(this.instances, this.elements); + } + }; +})(fabric.ElementsParser.prototype); + + +(function(global) { + + 'use strict'; + + /* Adaptation of work of Kevin Lindsey (kevin@kevlindev.com) */ + + var fabric = global.fabric || (global.fabric = { }); + + if (fabric.Point) { + fabric.warn('fabric.Point is already defined'); + return; + } + + fabric.Point = Point; + + /** + * Point class + * @class fabric.Point + * @memberOf fabric + * @constructor + * @param {Number} x + * @param {Number} y + * @return {fabric.Point} thisArg + */ + function Point(x, y) { + this.x = x; + this.y = y; + } + + Point.prototype = /** @lends fabric.Point.prototype */ { + + type: 'point', + + constructor: Point, + /** - * Returns SVG representation of an gradient - * @param {fabric.Object} object Object to create a gradient for - * @return {String} SVG representation of an gradient (linear/radial) + * Adds another point to this one and returns another one + * @param {fabric.Point} that + * @return {fabric.Point} new Point instance with added values */ - toSVG(object, { additionalTransform: preTransform } = {}) { - const markup = [], transform = (this.gradientTransform - ? this.gradientTransform.concat() - : iMatrix.concat()), gradientUnits = this.gradientUnits === 'pixels' - ? 'userSpaceOnUse' - : 'objectBoundingBox'; - // colorStops must be sorted ascending, and guarded against deep mutations - const colorStops = this.colorStops - .map((colorStop) => (Object.assign({}, colorStop))) - .sort((a, b) => { - return a.offset - b.offset; - }); - let offsetX = -this.offsetX, offsetY = -this.offsetY; - if (gradientUnits === 'objectBoundingBox') { - offsetX /= object.width; - offsetY /= object.height; - } - else { - offsetX += object.width / 2; - offsetY += object.height / 2; - } - if (object.type === 'path' && this.gradientUnits !== 'percentage') { - offsetX -= object.pathOffset.x; - offsetY -= object.pathOffset.y; - } - transform[4] -= offsetX; - transform[5] -= offsetY; - const commonAttributes = [ - `id="SVGID_${this.id}"`, - `gradientUnits="${gradientUnits}"`, - `gradientTransform="${preTransform ? preTransform + ' ' : ''}${matrixToSVG(transform)}"`, - '', - ].join(' '); - if (this.type === 'linear') { - const { x1, y1, x2, y2 } = this.coords; - markup.push('\n'); - } - else if (this.type === 'radial') { - const { x1, y1, x2, y2, r1, r2 } = this - .coords; - const needsSwap = r1 > r2; - // svg radial gradient has just 1 radius. the biggest. - markup.push('\n'); - if (needsSwap) { - // svg goes from internal to external radius. if radius are inverted, swap color stops. - colorStops.reverse(); // mutates array - colorStops.forEach((colorStop) => { - colorStop.offset = 1 - colorStop.offset; - }); - } - const minRadius = Math.min(r1, r2); - if (minRadius > 0) { - // i have to shift all colorStops and add new one in 0. - const maxRadius = Math.max(r1, r2), percentageShift = minRadius / maxRadius; - colorStops.forEach((colorStop) => { - colorStop.offset += percentageShift * (1 - colorStop.offset); - }); - } - } - colorStops.forEach(({ color, offset, opacity }) => { - markup.push('\n'); - }); - markup.push(this.type === 'linear' ? '' : '', '\n'); - return markup.join(''); - } - /* _TO_SVG_END_ */ + add: function (that) { + return new Point(this.x + that.x, this.y + that.y); + }, + /** - * Returns an instance of CanvasGradient - * @param {CanvasRenderingContext2D} ctx Context to render on - * @return {CanvasGradient} + * Adds another point to this one + * @param {fabric.Point} that + * @return {fabric.Point} thisArg + * @chainable */ - toLive(ctx) { - if (!this.type) { - return; - } - const coords = this.coords; - const gradient = this.type === 'linear' - ? ctx.createLinearGradient(coords.x1, coords.y1, coords.x2, coords.y2) - : ctx.createRadialGradient(coords.x1, coords.y1, coords.r1, coords.x2, coords.y2, coords.r2); - this.colorStops.forEach(({ color, opacity, offset }) => { - gradient.addColorStop(offset, typeof opacity !== 'undefined' - ? new Color(color).setAlpha(opacity).toRgba() - : color); - }); - return gradient; - } - /* _FROM_SVG_START_ */ + addEquals: function (that) { + this.x += that.x; + this.y += that.y; + return this; + }, + /** - * Returns {@link Gradient} instance from an SVG element - * @static - * @memberOf Gradient - * @param {SVGGradientElement} el SVG gradient element - * @param {FabricObject} instance - * @param {String} opacity A fill-opacity or stroke-opacity attribute to multiply to each stop's opacity. - * @param {SVGOptions} svgOptions an object containing the size of the SVG in order to parse correctly gradients - * that uses gradientUnits as 'userSpaceOnUse' and percentages. - * @return {Gradient} Gradient instance - * @see http://www.w3.org/TR/SVG/pservers.html#LinearGradientElement - * @see http://www.w3.org/TR/SVG/pservers.html#RadialGradientElement - * - * @example - * - * - * - * - * - * - * OR - * - * - * - * - * - * - * OR - * - * - * - * - * - * - * - * OR - * - * - * - * - * - * - * + * Adds value to this point and returns a new one + * @param {Number} scalar + * @return {fabric.Point} new Point with added value */ - static fromElement(el, instance, svgOptions) { - const gradientUnits = parseGradientUnits(el); - return new Gradient(Object.assign({ id: el.getAttribute('id') || undefined, type: parseType(el), coords: parseCoords(el, { - width: svgOptions.viewBoxWidth || svgOptions.width, - height: svgOptions.viewBoxHeight || svgOptions.height, - }), colorStops: parseColorStops(el, svgOptions.opacity), gradientUnits, gradientTransform: parseTransformAttribute(el.getAttribute('gradientTransform') || '') }, (gradientUnits === 'pixels' - ? { - offsetX: -instance.left, - offsetY: -instance.top, - } - : { - offsetX: 0, - offsetY: 0, - }))); - } -} -fabric$1.Gradient = Gradient; + scalarAdd: function (scalar) { + return new Point(this.x + scalar, this.y + scalar); + }, -//@ts-nocheck -/** - * @see {@link http://fabricjs.com/patterns demo} - * @see {@link http://fabricjs.com/dynamic-patterns demo} - */ -class Pattern$1 { /** - * Constructor - * @param {Object} [options] Options object - * @param {option.source} [source] the pattern source, eventually empty or a drawable - * @return {fabric.Pattern} thisArg + * Adds value to this point + * @param {Number} scalar + * @return {fabric.Point} thisArg + * @chainable */ - constructor(options = {}) { - this.type = 'pattern'; - /** - * @type TPatternRepeat - * @defaults - */ - this.repeat = 'repeat'; - /** - * Pattern horizontal offset from object's left/top corner - * @type Number - * @default - */ - this.offsetX = 0; - /** - * Pattern vertical offset from object's left/top corner - * @type Number - * @default - */ - this.offsetY = 0; - /** - * @type TCrossOrigin - * @default - */ - this.crossOrigin = ''; - /** - * transform matrix to change the pattern, imported from svgs. - * @type Array - * @default - */ - this.patternTransform = null; - this.id = fabric$1.Object.__uid++; - this.setOptions(options); - } - setOptions(options) { - for (const prop in options) { - this[prop] = options[prop]; - } - } + scalarAddEquals: function (scalar) { + this.x += scalar; + this.y += scalar; + return this; + }, + /** - * @returns true if {@link source} is an element + * Subtracts another point from this point and returns a new one + * @param {fabric.Point} that + * @return {fabric.Point} new Point object with subtracted values */ - isImageSource() { - return typeof this.source.src === 'string'; - } + subtract: function (that) { + return new Point(this.x - that.x, this.y - that.y); + }, + /** - * @returns true if {@link source} is a element + * Subtracts another point from this point + * @param {fabric.Point} that + * @return {fabric.Point} thisArg + * @chainable */ - isCanvasSource() { - return typeof this.source === 'object' && this.source.toDataURL; - } - sourceToString() { - return this.isImageSource() - ? this.source.src - : this.isCanvasSource() - ? this.source.toDataURL() - : ''; - } + subtractEquals: function (that) { + this.x -= that.x; + this.y -= that.y; + return this; + }, + /** - * Returns an instance of CanvasPattern - * @param {CanvasRenderingContext2D} ctx Context to create pattern - * @return {CanvasPattern} + * Subtracts value from this point and returns a new one + * @param {Number} scalar + * @return {fabric.Point} */ - toLive(ctx) { - if ( - // if the image failed to load, return, and allow rest to continue loading - !this.source || - // if an image - (this.isImageSource() && - (!this.source.complete || - this.source.naturalWidth === 0 || - this.source.naturalHeight === 0))) { - return ''; - } - return ctx.createPattern(this.source, this.repeat); - } + scalarSubtract: function (scalar) { + return new Point(this.x - scalar, this.y - scalar); + }, + /** - * Returns object representation of a pattern - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {object} Object representation of a pattern instance + * Subtracts value from this point + * @param {Number} scalar + * @return {fabric.Point} thisArg + * @chainable + */ + scalarSubtractEquals: function (scalar) { + this.x -= scalar; + this.y -= scalar; + return this; + }, + + /** + * Multiplies this point by a value and returns a new one + * TODO: rename in scalarMultiply in 2.0 + * @param {Number} scalar + * @return {fabric.Point} + */ + multiply: function (scalar) { + return new Point(this.x * scalar, this.y * scalar); + }, + + /** + * Multiplies this point by a value + * TODO: rename in scalarMultiplyEquals in 2.0 + * @param {Number} scalar + * @return {fabric.Point} thisArg + * @chainable + */ + multiplyEquals: function (scalar) { + this.x *= scalar; + this.y *= scalar; + return this; + }, + + /** + * Divides this point by a value and returns a new one + * TODO: rename in scalarDivide in 2.0 + * @param {Number} scalar + * @return {fabric.Point} + */ + divide: function (scalar) { + return new Point(this.x / scalar, this.y / scalar); + }, + + /** + * Divides this point by a value + * TODO: rename in scalarDivideEquals in 2.0 + * @param {Number} scalar + * @return {fabric.Point} thisArg + * @chainable + */ + divideEquals: function (scalar) { + this.x /= scalar; + this.y /= scalar; + return this; + }, + + /** + * Returns true if this point is equal to another one + * @param {fabric.Point} that + * @return {Boolean} + */ + eq: function (that) { + return (this.x === that.x && this.y === that.y); + }, + + /** + * Returns true if this point is less than another one + * @param {fabric.Point} that + * @return {Boolean} + */ + lt: function (that) { + return (this.x < that.x && this.y < that.y); + }, + + /** + * Returns true if this point is less than or equal to another one + * @param {fabric.Point} that + * @return {Boolean} + */ + lte: function (that) { + return (this.x <= that.x && this.y <= that.y); + }, + + /** + + * Returns true if this point is greater another one + * @param {fabric.Point} that + * @return {Boolean} + */ + gt: function (that) { + return (this.x > that.x && this.y > that.y); + }, + + /** + * Returns true if this point is greater than or equal to another one + * @param {fabric.Point} that + * @return {Boolean} + */ + gte: function (that) { + return (this.x >= that.x && this.y >= that.y); + }, + + /** + * Returns new point which is the result of linear interpolation with this one and another one + * @param {fabric.Point} that + * @param {Number} t , position of interpolation, between 0 and 1 default 0.5 + * @return {fabric.Point} + */ + lerp: function (that, t) { + if (typeof t === 'undefined') { + t = 0.5; + } + t = Math.max(Math.min(1, t), 0); + return new Point(this.x + (that.x - this.x) * t, this.y + (that.y - this.y) * t); + }, + + /** + * Returns distance from this point and another one + * @param {fabric.Point} that + * @return {Number} + */ + distanceFrom: function (that) { + var dx = this.x - that.x, + dy = this.y - that.y; + return Math.sqrt(dx * dx + dy * dy); + }, + + /** + * Returns the point between this point and another one + * @param {fabric.Point} that + * @return {fabric.Point} + */ + midPointFrom: function (that) { + return this.lerp(that); + }, + + /** + * Returns a new point which is the min of this and another one + * @param {fabric.Point} that + * @return {fabric.Point} + */ + min: function (that) { + return new Point(Math.min(this.x, that.x), Math.min(this.y, that.y)); + }, + + /** + * Returns a new point which is the max of this and another one + * @param {fabric.Point} that + * @return {fabric.Point} + */ + max: function (that) { + return new Point(Math.max(this.x, that.x), Math.max(this.y, that.y)); + }, + + /** + * Returns string representation of this point + * @return {String} + */ + toString: function () { + return this.x + ',' + this.y; + }, + + /** + * Sets x/y of this point + * @param {Number} x + * @param {Number} y + * @chainable + */ + setXY: function (x, y) { + this.x = x; + this.y = y; + return this; + }, + + /** + * Sets x of this point + * @param {Number} x + * @chainable + */ + setX: function (x) { + this.x = x; + return this; + }, + + /** + * Sets y of this point + * @param {Number} y + * @chainable + */ + setY: function (y) { + this.y = y; + return this; + }, + + /** + * Sets x/y of this point from another point + * @param {fabric.Point} that + * @chainable + */ + setFromPoint: function (that) { + this.x = that.x; + this.y = that.y; + return this; + }, + + /** + * Swaps x/y of this point and another point + * @param {fabric.Point} that + */ + swap: function (that) { + var x = this.x, + y = this.y; + this.x = that.x; + this.y = that.y; + that.x = x; + that.y = y; + }, + + /** + * return a cloned instance of the point + * @return {fabric.Point} */ - toObject(propertiesToInclude) { - return Object.assign(Object.assign({}, pick(this, propertiesToInclude)), { type: 'pattern', source: this.sourceToString(), repeat: this.repeat, crossOrigin: this.crossOrigin, offsetX: toFixed(this.offsetX, config.NUM_FRACTION_DIGITS), offsetY: toFixed(this.offsetY, config.NUM_FRACTION_DIGITS), patternTransform: this.patternTransform - ? this.patternTransform.concat() - : null }); + clone: function () { + return new Point(this.x, this.y); } - /* _TO_SVG_START_ */ + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + /* Adaptation of work of Kevin Lindsey (kevin@kevlindev.com) */ + var fabric = global.fabric || (global.fabric = { }); + + if (fabric.Intersection) { + fabric.warn('fabric.Intersection is already defined'); + return; + } + + /** + * Intersection class + * @class fabric.Intersection + * @memberOf fabric + * @constructor + */ + function Intersection(status) { + this.status = status; + this.points = []; + } + + fabric.Intersection = Intersection; + + fabric.Intersection.prototype = /** @lends fabric.Intersection.prototype */ { + + constructor: Intersection, + /** - * Returns SVG representation of a pattern + * Appends a point to intersection + * @param {fabric.Point} point + * @return {fabric.Intersection} thisArg + * @chainable */ - toSVG({ width, height }) { - const patternSource = this.source, patternOffsetX = ifNaN(this.offsetX / width, 0), patternOffsetY = ifNaN(this.offsetY / height, 0), patternWidth = this.repeat === 'repeat-y' || this.repeat === 'no-repeat' - ? 1 + Math.abs(patternOffsetX || 0) - : ifNaN(patternSource.width / width, 0), patternHeight = this.repeat === 'repeat-x' || this.repeat === 'no-repeat' - ? 1 + Math.abs(patternOffsetY || 0) - : ifNaN(patternSource.height / height, 0); - return [ - ``, - ``, - ``, - '', - ].join('\n'); + appendPoint: function (point) { + this.points.push(point); + return this; + }, + + /** + * Appends points to intersection + * @param {Array} points + * @return {fabric.Intersection} thisArg + * @chainable + */ + appendPoints: function (points) { + this.points = this.points.concat(points); + return this; } - /* _TO_SVG_END_ */ - static async fromObject(_a, options) { - var { source } = _a, serialized = __rest(_a, ["source"]); - const img = await loadImage(source, Object.assign(Object.assign({}, options), { crossOrigin: serialized.crossOrigin })); - return new Pattern$1(Object.assign(Object.assign({}, serialized), { source: img })); + }; + + /** + * Checks if one line intersects another + * TODO: rename in intersectSegmentSegment + * @static + * @param {fabric.Point} a1 + * @param {fabric.Point} a2 + * @param {fabric.Point} b1 + * @param {fabric.Point} b2 + * @return {fabric.Intersection} + */ + fabric.Intersection.intersectLineLine = function (a1, a2, b1, b2) { + var result, + uaT = (b2.x - b1.x) * (a1.y - b1.y) - (b2.y - b1.y) * (a1.x - b1.x), + ubT = (a2.x - a1.x) * (a1.y - b1.y) - (a2.y - a1.y) * (a1.x - b1.x), + uB = (b2.y - b1.y) * (a2.x - a1.x) - (b2.x - b1.x) * (a2.y - a1.y); + if (uB !== 0) { + var ua = uaT / uB, + ub = ubT / uB; + if (0 <= ua && ua <= 1 && 0 <= ub && ub <= 1) { + result = new Intersection('Intersection'); + result.appendPoint(new fabric.Point(a1.x + ua * (a2.x - a1.x), a1.y + ua * (a2.y - a1.y))); + } + else { + result = new Intersection(); + } } -} -fabric$1.Pattern = Pattern$1; - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), toFixed = fabric.util.toFixed; - /** - * Shadow class - * @class fabric.Shadow - * @see {@link http://fabricjs.com/shadows|Shadow demo} - * @see {@link fabric.Shadow#initialize} for constructor definition - */ - fabric.Shadow = fabric.util.createClass( - /** @lends fabric.Shadow.prototype */ { - /** - * Shadow color - * @type String - * @default - */ - color: 'rgb(0,0,0)', - /** - * Shadow blur - * @type Number - */ - blur: 0, - /** - * Shadow horizontal offset - * @type Number - * @default - */ - offsetX: 0, - /** - * Shadow vertical offset - * @type Number - * @default - */ - offsetY: 0, - /** - * Whether the shadow should affect stroke operations - * @type Boolean - * @default - */ - affectStroke: false, - /** - * Indicates whether toObject should include default values - * @type Boolean - * @default - */ - includeDefaultValues: true, - /** - * When `false`, the shadow will scale with the object. - * When `true`, the shadow's offsetX, offsetY, and blur will not be affected by the object's scale. - * default to false - * @type Boolean - * @default - */ - nonScaling: false, - /** - * Constructor - * @param {Object|String} [options] Options object with any of color, blur, offsetX, offsetY properties or string (e.g. "rgba(0,0,0,0.2) 2px 2px 10px") - * @return {fabric.Shadow} thisArg - */ - initialize: function (options) { - if (typeof options === 'string') { - options = this._parseShadow(options); - } - for (var prop in options) { - this[prop] = options[prop]; - } - this.id = fabric.Object.__uid++; - }, - /** - * @private - * @param {String} shadow Shadow value to parse - * @return {Object} Shadow object with color, offsetX, offsetY and blur - */ - _parseShadow: function (shadow) { - var shadowStr = shadow.trim(), offsetsAndBlur = fabric.Shadow.reOffsetsAndBlur.exec(shadowStr) || [], color = shadowStr.replace(fabric.Shadow.reOffsetsAndBlur, '') || - 'rgb(0,0,0)'; - return { - color: color.trim(), - offsetX: parseFloat(offsetsAndBlur[1], 10) || 0, - offsetY: parseFloat(offsetsAndBlur[2], 10) || 0, - blur: parseFloat(offsetsAndBlur[3], 10) || 0, - }; - }, - /** - * Returns a string representation of an instance - * @see http://www.w3.org/TR/css-text-decor-3/#text-shadow - * @return {String} Returns CSS3 text-shadow declaration - */ - toString: function () { - return [this.offsetX, this.offsetY, this.blur, this.color].join('px '); - }, - /* _TO_SVG_START_ */ - /** - * Returns SVG representation of a shadow - * @param {fabric.Object} object - * @return {String} SVG representation of a shadow - */ - toSVG: function (object) { - var fBoxX = 40, fBoxY = 40, NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS, offset = fabric.util.rotateVector(new Point(this.offsetX, this.offsetY), fabric.util.degreesToRadians(-object.angle)), BLUR_BOX = 20, color = new Color(this.color); - if (object.width && object.height) { - //http://www.w3.org/TR/SVG/filters.html#FilterEffectsRegion - // we add some extra space to filter box to contain the blur ( 20 ) - fBoxX = - toFixed((Math.abs(offset.x) + this.blur) / object.width, NUM_FRACTION_DIGITS) * - 100 + - BLUR_BOX; - fBoxY = - toFixed((Math.abs(offset.y) + this.blur) / object.height, NUM_FRACTION_DIGITS) * - 100 + - BLUR_BOX; - } - if (object.flipX) { - offset.x *= -1; - } - if (object.flipY) { - offset.y *= -1; - } - return ('\n' + - '\t\n' + - '\t\n' + - '\t\n' + - '\t\n' + - '\t\n' + - '\t\t\n' + - '\t\t\n' + - '\t\n' + - '\n'); - }, - /* _TO_SVG_END_ */ - /** - * Returns object representation of a shadow - * @return {Object} Object representation of a shadow instance - */ - toObject: function () { - if (this.includeDefaultValues) { - return { - color: this.color, - blur: this.blur, - offsetX: this.offsetX, - offsetY: this.offsetY, - affectStroke: this.affectStroke, - nonScaling: this.nonScaling, - }; - } - var obj = {}, proto = fabric.Shadow.prototype; - [ - 'color', - 'blur', - 'offsetX', - 'offsetY', - 'affectStroke', - 'nonScaling', - ].forEach(function (prop) { - if (this[prop] !== proto[prop]) { - obj[prop] = this[prop]; - } - }, this); - return obj; - }, - }); + else { + if (uaT === 0 || ubT === 0) { + result = new Intersection('Coincident'); + } + else { + result = new Intersection('Parallel'); + } + } + return result; + }; + + /** + * Checks if line intersects polygon + * TODO: rename in intersectSegmentPolygon + * fix detection of coincident + * @static + * @param {fabric.Point} a1 + * @param {fabric.Point} a2 + * @param {Array} points + * @return {fabric.Intersection} + */ + fabric.Intersection.intersectLinePolygon = function(a1, a2, points) { + var result = new Intersection(), + length = points.length, + b1, b2, inter, i; + + for (i = 0; i < length; i++) { + b1 = points[i]; + b2 = points[(i + 1) % length]; + inter = Intersection.intersectLineLine(a1, a2, b1, b2); + + result.appendPoints(inter.points); + } + if (result.points.length > 0) { + result.status = 'Intersection'; + } + return result; + }; + + /** + * Checks if polygon intersects another polygon + * @static + * @param {Array} points1 + * @param {Array} points2 + * @return {fabric.Intersection} + */ + fabric.Intersection.intersectPolygonPolygon = function (points1, points2) { + var result = new Intersection(), + length = points1.length, i; + + for (i = 0; i < length; i++) { + var a1 = points1[i], + a2 = points1[(i + 1) % length], + inter = Intersection.intersectLinePolygon(a1, a2, points2); + + result.appendPoints(inter.points); + } + if (result.points.length > 0) { + result.status = 'Intersection'; + } + return result; + }; + + /** + * Checks if polygon intersects rectangle + * @static + * @param {Array} points + * @param {fabric.Point} r1 + * @param {fabric.Point} r2 + * @return {fabric.Intersection} + */ + fabric.Intersection.intersectPolygonRectangle = function (points, r1, r2) { + var min = r1.min(r2), + max = r1.max(r2), + topRight = new fabric.Point(max.x, min.y), + bottomLeft = new fabric.Point(min.x, max.y), + inter1 = Intersection.intersectLinePolygon(min, topRight, points), + inter2 = Intersection.intersectLinePolygon(topRight, max, points), + inter3 = Intersection.intersectLinePolygon(max, bottomLeft, points), + inter4 = Intersection.intersectLinePolygon(bottomLeft, min, points), + result = new Intersection(); + + result.appendPoints(inter1.points); + result.appendPoints(inter2.points); + result.appendPoints(inter3.points); + result.appendPoints(inter4.points); + + if (result.points.length > 0) { + result.status = 'Intersection'; + } + return result; + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }); + + if (fabric.Color) { + fabric.warn('fabric.Color is already defined.'); + return; + } + + /** + * Color class + * The purpose of {@link fabric.Color} is to abstract and encapsulate common color operations; + * {@link fabric.Color} is a constructor and creates instances of {@link fabric.Color} objects. + * + * @class fabric.Color + * @param {String} color optional in hex or rgb(a) or hsl format or from known color list + * @return {fabric.Color} thisArg + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#colors} + */ + function Color(color) { + if (!color) { + this.setSource([0, 0, 0, 1]); + } + else { + this._tryParsingColor(color); + } + } + + fabric.Color = Color; + + fabric.Color.prototype = /** @lends fabric.Color.prototype */ { + /** - * Regex matching shadow offsetX, offsetY and blur (ex: "2px 2px 10px rgba(0,0,0,0.2)", "rgb(0,255,0) 2px 2px") - * @static - * @field - * @memberOf fabric.Shadow - */ - // eslint-disable-next-line max-len - fabric.Shadow.reOffsetsAndBlur = - /(?:\s|^)(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(\d+(?:\.\d*)?(?:px)?)?(?:\s?|$)(?:$|\s)/; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - // aliases for faster resolution - var fabric = global.fabric, extend = fabric.util.object.extend, getElementOffset = fabric.util.getElementOffset, toFixed = fabric.util.toFixed, transformPoint = fabric.util.transformPoint, invertTransform = fabric.util.invertTransform, getNodeCanvas = fabric.util.getNodeCanvas, createCanvasElement = fabric.util.createCanvasElement, CANVAS_INIT_ERROR = new Error('Could not initialize `canvas` element'); - /** - * Static canvas class - * @class fabric.StaticCanvas - * @mixes fabric.Collection - * @mixes fabric.Observable - * @see {@link http://fabricjs.com/static_canvas|StaticCanvas demo} - * @see {@link fabric.StaticCanvas#initialize} for constructor definition - * @fires before:render - * @fires after:render - * @fires canvas:cleared - * @fires object:added - * @fires object:removed - */ - // eslint-disable-next-line max-len - fabric.StaticCanvas = fabric.util.createClass(fabric.CommonMethods, fabric.Collection, - /** @lends fabric.StaticCanvas.prototype */ { - /** - * Constructor - * @param {HTMLElement | String} el <canvas> element to initialize instance on - * @param {Object} [options] Options object - * @return {Object} thisArg - */ - initialize: function (el, options) { - options || (options = {}); - this.renderAndResetBound = this.renderAndReset.bind(this); - this.requestRenderAllBound = this.requestRenderAll.bind(this); - this._initStatic(el, options); - }, - /** - * Background color of canvas instance. - * @type {(String|fabric.Pattern)} - * @default - */ - backgroundColor: '', - /** - * Background image of canvas instance. - * since 2.4.0 image caching is active, please when putting an image as background, add to the - * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom - * vale. As an alternative you can disable image objectCaching - * @type fabric.Image - * @default - */ - backgroundImage: null, - /** - * Overlay color of canvas instance. - * @since 1.3.9 - * @type {(String|fabric.Pattern)} - * @default - */ - overlayColor: '', - /** - * Overlay image of canvas instance. - * since 2.4.0 image caching is active, please when putting an image as overlay, add to the - * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom - * vale. As an alternative you can disable image objectCaching - * @type fabric.Image - * @default - */ - overlayImage: null, - /** - * Indicates whether toObject/toDatalessObject should include default values - * if set to false, takes precedence over the object value. - * @type Boolean - * @default - */ - includeDefaultValues: true, - /** - * Indicates whether objects' state should be saved - * @type Boolean - * @default - */ - stateful: false, - /** - * Indicates whether {@link fabric.Collection.add}, {@link fabric.Collection.insertAt} and {@link fabric.Collection.remove}, - * {@link fabric.StaticCanvas.moveTo}, {@link fabric.StaticCanvas.clear} and many more, should also re-render canvas. - * Disabling this option will not give a performance boost when adding/removing a lot of objects to/from canvas at once - * since the renders are quequed and executed one per frame. - * Disabling is suggested anyway and managing the renders of the app manually is not a big effort ( canvas.requestRenderAll() ) - * Left default to true to do not break documentation and old app, fiddles. - * @type Boolean - * @default - */ - renderOnAddRemove: true, - /** - * Indicates whether object controls (borders/controls) are rendered above overlay image - * @type Boolean - * @default - */ - controlsAboveOverlay: false, - /** - * Indicates whether the browser can be scrolled when using a touchscreen and dragging on the canvas - * @type Boolean - * @default - */ - allowTouchScrolling: false, - /** - * Indicates whether this canvas will use image smoothing, this is on by default in browsers - * @type Boolean - * @default - */ - imageSmoothingEnabled: true, - /** - * The transformation (a Canvas 2D API transform matrix) which focuses the viewport - * @type Array - * @example Default transform - * canvas.viewportTransform = [1, 0, 0, 1, 0, 0]; - * @example Scale by 70% and translate toward bottom-right by 50, without skewing - * canvas.viewportTransform = [0.7, 0, 0, 0.7, 50, 50]; - * @default - */ - viewportTransform: fabric.iMatrix.concat(), - /** - * if set to false background image is not affected by viewport transform - * @since 1.6.3 - * @type Boolean - * @default - */ - backgroundVpt: true, - /** - * if set to false overlya image is not affected by viewport transform - * @since 1.6.3 - * @type Boolean - * @default - */ - overlayVpt: true, - /** - * When true, canvas is scaled by devicePixelRatio for better rendering on retina screens - * @type Boolean - * @default - */ - enableRetinaScaling: true, - /** - * Describe canvas element extension over design - * properties are tl,tr,bl,br. - * if canvas is not zoomed/panned those points are the four corner of canvas - * if canvas is viewportTransformed you those points indicate the extension - * of canvas element in plain untrasformed coordinates - * The coordinates get updated with @method calcViewportBoundaries. - * @memberOf fabric.StaticCanvas.prototype - */ - vptCoords: {}, - /** - * Based on vptCoords and object.aCoords, skip rendering of objects that - * are not included in current viewport. - * May greatly help in applications with crowded canvas and use of zoom/pan - * If One of the corner of the bounding box of the object is on the canvas - * the objects get rendered. - * @memberOf fabric.StaticCanvas.prototype - * @type Boolean - * @default - */ - skipOffscreen: true, - /** - * a fabricObject that, without stroke define a clipping area with their shape. filled in black - * the clipPath object gets used when the canvas has rendered, and the context is placed in the - * top left corner of the canvas. - * clipPath will clip away controls, if you do not want this to happen use controlsAboveOverlay = true - * @type fabric.Object - */ - clipPath: undefined, - /** - * @private - * @param {HTMLElement | String} el <canvas> element to initialize instance on - * @param {Object} [options] Options object - */ - _initStatic: function (el, options) { - this._objects = []; - this._createLowerCanvas(el); - this._initOptions(options); - // only initialize retina scaling once - if (!this.interactive) { - this._initRetinaScaling(); - } - this.calcOffset(); - }, - /** - * @private - */ - _isRetinaScaling: function () { - return config.devicePixelRatio > 1 && this.enableRetinaScaling; - }, - /** - * @private - * @return {Number} retinaScaling if applied, otherwise 1; - */ - getRetinaScaling: function () { - return this._isRetinaScaling() - ? Math.max(1, config.devicePixelRatio) - : 1; - }, - /** - * @private - */ - _initRetinaScaling: function () { - if (!this._isRetinaScaling()) { - return; - } - var scaleRatio = config.devicePixelRatio; - this.__initRetinaScaling(scaleRatio, this.lowerCanvasEl, this.contextContainer); - if (this.upperCanvasEl) { - this.__initRetinaScaling(scaleRatio, this.upperCanvasEl, this.contextTop); - } - }, - __initRetinaScaling: function (scaleRatio, canvas, context) { - canvas.setAttribute('width', this.width * scaleRatio); - canvas.setAttribute('height', this.height * scaleRatio); - context.scale(scaleRatio, scaleRatio); - }, - /** - * Calculates canvas element offset relative to the document - * This method is also attached as "resize" event handler of window - * @return {fabric.Canvas} instance - * @chainable - */ - calcOffset: function () { - this._offset = getElementOffset(this.lowerCanvasEl); - return this; - }, - /** - * @private - */ - _createCanvasElement: function () { - var element = createCanvasElement(); - if (!element) { - throw CANVAS_INIT_ERROR; - } - if (!element.style) { - element.style = {}; - } - if (typeof element.getContext === 'undefined') { - throw CANVAS_INIT_ERROR; - } - return element; - }, - /** - * @private - * @param {Object} [options] Options object - */ - _initOptions: function (options) { - var lowerCanvasEl = this.lowerCanvasEl; - this._setOptions(options); - this.width = this.width || parseInt(lowerCanvasEl.width, 10) || 0; - this.height = this.height || parseInt(lowerCanvasEl.height, 10) || 0; - if (!this.lowerCanvasEl.style) { - return; - } - lowerCanvasEl.width = this.width; - lowerCanvasEl.height = this.height; - lowerCanvasEl.style.width = this.width + 'px'; - lowerCanvasEl.style.height = this.height + 'px'; - this.viewportTransform = this.viewportTransform.slice(); - }, - /** - * Creates a bottom canvas - * @private - * @param {HTMLElement} [canvasEl] - */ - _createLowerCanvas: function (canvasEl) { - // canvasEl === 'HTMLCanvasElement' does not work on jsdom/node - if (canvasEl && canvasEl.getContext) { - this.lowerCanvasEl = canvasEl; - } - else { - this.lowerCanvasEl = - fabric.document.getElementById(canvasEl) || - canvasEl || - this._createCanvasElement(); - } - if (this.lowerCanvasEl.hasAttribute('data-fabric')) { - /* _DEV_MODE_START_ */ - throw new Error('fabric.js: trying to initialize a canvas that has already been initialized'); - /* _DEV_MODE_END_ */ - } - this.lowerCanvasEl.classList.add('lower-canvas'); - this.lowerCanvasEl.setAttribute('data-fabric', 'main'); - if (this.interactive) { - this._originalCanvasStyle = this.lowerCanvasEl.style.cssText; - this._applyCanvasStyle(this.lowerCanvasEl); - } - this.contextContainer = this.lowerCanvasEl.getContext('2d'); - }, - /** - * Returns canvas width (in px) - * @return {Number} - */ - getWidth: function () { - return this.width; - }, - /** - * Returns canvas height (in px) - * @return {Number} - */ - getHeight: function () { - return this.height; - }, - /** - * Sets width of this canvas instance - * @param {Number|String} value Value to set width to - * @param {Object} [options] Options object - * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions - * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions - * @return {fabric.Canvas} instance - * @chainable true - */ - setWidth: function (value, options) { - return this.setDimensions({ width: value }, options); - }, - /** - * Sets height of this canvas instance - * @param {Number|String} value Value to set height to - * @param {Object} [options] Options object - * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions - * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions - * @return {fabric.Canvas} instance - * @chainable true - */ - setHeight: function (value, options) { - return this.setDimensions({ height: value }, options); - }, - /** - * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em) - * @param {Object} dimensions Object with width/height properties - * @param {Number|String} [dimensions.width] Width of canvas element - * @param {Number|String} [dimensions.height] Height of canvas element - * @param {Object} [options] Options object - * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions - * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions - * @return {fabric.Canvas} thisArg - * @chainable - */ - setDimensions: function (dimensions, options) { - var cssValue; - options = options || {}; - for (var prop in dimensions) { - cssValue = dimensions[prop]; - if (!options.cssOnly) { - this._setBackstoreDimension(prop, dimensions[prop]); - cssValue += 'px'; - this.hasLostContext = true; - } - if (!options.backstoreOnly) { - this._setCssDimension(prop, cssValue); - } - } - if (this._isCurrentlyDrawing) { - this.freeDrawingBrush && - this.freeDrawingBrush._setBrushStyles(this.contextTop); - } - this._initRetinaScaling(); - this.calcOffset(); - if (!options.cssOnly) { - this.requestRenderAll(); - } - return this; - }, - /** - * Helper for setting width/height - * @private - * @param {String} prop property (width|height) - * @param {Number} value value to set property to - * @return {fabric.Canvas} instance - * @chainable true - */ - _setBackstoreDimension: function (prop, value) { - this.lowerCanvasEl[prop] = value; - if (this.upperCanvasEl) { - this.upperCanvasEl[prop] = value; - } - if (this.cacheCanvasEl) { - this.cacheCanvasEl[prop] = value; - } - this[prop] = value; - return this; - }, - /** - * Helper for setting css width/height - * @private - * @param {String} prop property (width|height) - * @param {String} value value to set property to - * @return {fabric.Canvas} instance - * @chainable true - */ - _setCssDimension: function (prop, value) { - this.lowerCanvasEl.style[prop] = value; - if (this.upperCanvasEl) { - this.upperCanvasEl.style[prop] = value; - } - if (this.wrapperEl) { - this.wrapperEl.style[prop] = value; - } - return this; - }, - /** - * Returns canvas zoom level - * @return {Number} - */ - getZoom: function () { - return this.viewportTransform[0]; - }, - /** - * Sets viewport transformation of this canvas instance - * @param {Array} vpt a Canvas 2D API transform matrix - * @return {fabric.Canvas} instance - * @chainable true - */ - setViewportTransform: function (vpt) { - var activeObject = this._activeObject, backgroundObject = this.backgroundImage, overlayObject = this.overlayImage, object, i, len; - this.viewportTransform = vpt; - for (i = 0, len = this._objects.length; i < len; i++) { - object = this._objects[i]; - object.group || object.setCoords(true); - } - if (activeObject) { - activeObject.setCoords(); - } - if (backgroundObject) { - backgroundObject.setCoords(true); - } - if (overlayObject) { - overlayObject.setCoords(true); - } - this.calcViewportBoundaries(); - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - /** - * Sets zoom level of this canvas instance, the zoom centered around point - * meaning that following zoom to point with the same point will have the visual - * effect of the zoom originating from that point. The point won't move. - * It has nothing to do with canvas center or visual center of the viewport. - * @param {Point} point to zoom with respect to - * @param {Number} value to set zoom to, less than 1 zooms out - * @return {fabric.Canvas} instance - * @chainable true - */ - zoomToPoint: function (point, value) { - // TODO: just change the scale, preserve other transformations - var before = point, vpt = this.viewportTransform.slice(0); - point = transformPoint(point, invertTransform(this.viewportTransform)); - vpt[0] = value; - vpt[3] = value; - var after = transformPoint(point, vpt); - vpt[4] += before.x - after.x; - vpt[5] += before.y - after.y; - return this.setViewportTransform(vpt); - }, - /** - * Sets zoom level of this canvas instance - * @param {Number} value to set zoom to, less than 1 zooms out - * @return {fabric.Canvas} instance - * @chainable true - */ - setZoom: function (value) { - this.zoomToPoint(new Point(0, 0), value); - return this; - }, - /** - * Pan viewport so as to place point at top left corner of canvas - * @param {Point} point to move to - * @return {fabric.Canvas} instance - * @chainable true - */ - absolutePan: function (point) { - var vpt = this.viewportTransform.slice(0); - vpt[4] = -point.x; - vpt[5] = -point.y; - return this.setViewportTransform(vpt); - }, - /** - * Pans viewpoint relatively - * @param {Point} point (position vector) to move by - * @return {fabric.Canvas} instance - * @chainable true - */ - relativePan: function (point) { - return this.absolutePan(new Point(-point.x - this.viewportTransform[4], -point.y - this.viewportTransform[5])); - }, - /** - * Returns <canvas> element corresponding to this instance - * @return {HTMLCanvasElement} - */ - getElement: function () { - return this.lowerCanvasEl; - }, - /** - * @param {...fabric.Object} objects to add - * @return {Self} thisArg - * @chainable - */ - add: function () { - fabric.Collection.add.call(this, arguments, this._onObjectAdded); - arguments.length > 0 && - this.renderOnAddRemove && - this.requestRenderAll(); - return this; - }, - /** - * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`) - * An object should be an instance of (or inherit from) fabric.Object - * @param {fabric.Object|fabric.Object[]} objects Object(s) to insert - * @param {Number} index Index to insert object at - * @param {Boolean} nonSplicing When `true`, no splicing (shifting) of objects occurs - * @return {Self} thisArg - * @chainable - */ - insertAt: function (objects, index) { - fabric.Collection.insertAt.call(this, objects, index, this._onObjectAdded); - (Array.isArray(objects) ? objects.length > 0 : !!objects) && - this.renderOnAddRemove && - this.requestRenderAll(); - return this; - }, - /** - * @param {...fabric.Object} objects to remove - * @return {Self} thisArg - * @chainable - */ - remove: function () { - var removed = fabric.Collection.remove.call(this, arguments, this._onObjectRemoved); - removed.length > 0 && this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - /** - * @private - * @param {fabric.Object} obj Object that was added - */ - _onObjectAdded: function (obj) { - this.stateful && obj.setupState(); - if (obj.canvas && obj.canvas !== this) { - /* _DEV_MODE_START_ */ - console.warn('fabric.Canvas: trying to add an object that belongs to a different canvas.\n' + - 'Resulting to default behavior: removing object from previous canvas and adding to new canvas'); - /* _DEV_MODE_END_ */ - obj.canvas.remove(obj); - } - obj._set('canvas', this); - obj.setCoords(); - this.fire('object:added', { target: obj }); - obj.fire('added', { target: this }); - }, - /** - * @private - * @param {fabric.Object} obj Object that was removed - */ - _onObjectRemoved: function (obj) { - obj._set('canvas', undefined); - this.fire('object:removed', { target: obj }); - obj.fire('removed', { target: this }); - }, - /** - * Clears specified context of canvas element - * @param {CanvasRenderingContext2D} ctx Context to clear - * @return {fabric.Canvas} thisArg - * @chainable - */ - clearContext: function (ctx) { - ctx.clearRect(0, 0, this.width, this.height); - return this; - }, - /** - * Returns context of canvas where objects are drawn - * @return {CanvasRenderingContext2D} - */ - getContext: function () { - return this.contextContainer; - }, - /** - * Clears all contexts (background, main, top) of an instance - * @return {fabric.Canvas} thisArg - * @chainable - */ - clear: function () { - this.remove.apply(this, this.getObjects()); - this.backgroundImage = null; - this.overlayImage = null; - this.backgroundColor = ''; - this.overlayColor = ''; - if (this._hasITextHandlers) { - this.off('mouse:up', this._mouseUpITextHandler); - this._iTextInstances = null; - this._hasITextHandlers = false; - } - this.clearContext(this.contextContainer); - this.fire('canvas:cleared'); - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - /** - * Renders the canvas - * @return {fabric.Canvas} instance - * @chainable - */ - renderAll: function () { - this.cancelRequestedRender(); - if (this.destroyed) { - return; - } - this.renderCanvas(this.contextContainer, this._objects); - return this; - }, - /** - * Function created to be instance bound at initialization - * used in requestAnimationFrame rendering - * Let the fabricJS call it. If you call it manually you could have more - * animationFrame stacking on to of each other - * for an imperative rendering, use canvas.renderAll - * @private - * @return {fabric.Canvas} instance - * @chainable - */ - renderAndReset: function () { - this.nextRenderHandle = 0; - this.renderAll(); - }, - /** - * Append a renderAll request to next animation frame. - * unless one is already in progress, in that case nothing is done - * a boolean flag will avoid appending more. - * @return {fabric.Canvas} instance - * @chainable - */ - requestRenderAll: function () { - if (!this.nextRenderHandle && !this.disposed && !this.destroyed) { - this.nextRenderHandle = requestAnimFrame(this.renderAndResetBound); - } - return this; - }, - /** - * Calculate the position of the 4 corner of canvas with current viewportTransform. - * helps to determinate when an object is in the current rendering viewport using - * object absolute coordinates ( aCoords ) - * @return {Object} points.tl - * @chainable - */ - calcViewportBoundaries: function () { - var width = this.width, height = this.height, iVpt = invertTransform(this.viewportTransform), a = transformPoint({ x: 0, y: 0 }, iVpt), b = transformPoint({ x: width, y: height }, iVpt), - // we don't support vpt flipping - // but the code is robust enough to mostly work with flipping - min = a.min(b), max = a.max(b); - return (this.vptCoords = { - tl: min, - tr: new Point(max.x, min.y), - bl: new Point(min.x, max.y), - br: max, - }); - }, - cancelRequestedRender: function () { - if (this.nextRenderHandle) { - fabric.util.cancelAnimFrame(this.nextRenderHandle); - this.nextRenderHandle = 0; - } - }, - /** - * Renders background, objects, overlay and controls. - * @param {CanvasRenderingContext2D} ctx - * @param {Array} objects to render - * @return {fabric.Canvas} instance - * @chainable - */ - renderCanvas: function (ctx, objects) { - if (this.destroyed) { - return; - } - var v = this.viewportTransform, path = this.clipPath; - this.calcViewportBoundaries(); - this.clearContext(ctx); - ctx.imageSmoothingEnabled = this.imageSmoothingEnabled; - // node-canvas - ctx.patternQuality = 'best'; - this.fire('before:render', { ctx: ctx }); - this._renderBackground(ctx); - ctx.save(); - //apply viewport transform once for all rendering process - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - this._renderObjects(ctx, objects); - ctx.restore(); - if (!this.controlsAboveOverlay && this.interactive) { - this.drawControls(ctx); - } - if (path) { - path._set('canvas', this); - // needed to setup a couple of variables - path.shouldCache(); - path._transformDone = true; - path.renderCache({ forClipping: true }); - this.drawClipPathOnCanvas(ctx); - } - this._renderOverlay(ctx); - if (this.controlsAboveOverlay && this.interactive) { - this.drawControls(ctx); - } - this.fire('after:render', { ctx: ctx }); - if (this.__cleanupTask) { - this.__cleanupTask(); - this.__cleanupTask = undefined; - } - }, - /** - * Paint the cached clipPath on the lowerCanvasEl - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - drawClipPathOnCanvas: function (ctx) { - var v = this.viewportTransform, path = this.clipPath; - ctx.save(); - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - // DEBUG: uncomment this line, comment the following - // ctx.globalAlpha = 0.4; - ctx.globalCompositeOperation = 'destination-in'; - path.transform(ctx); - ctx.scale(1 / path.zoomX, 1 / path.zoomY); - ctx.drawImage(path._cacheCanvas, -path.cacheTranslationX, -path.cacheTranslationY); - ctx.restore(); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Array} objects to render - */ - _renderObjects: function (ctx, objects) { - var i, len; - for (i = 0, len = objects.length; i < len; ++i) { - objects[i] && objects[i].render(ctx); - } - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {string} property 'background' or 'overlay' - */ - _renderBackgroundOrOverlay: function (ctx, property) { - var fill = this[property + 'Color'], object = this[property + 'Image'], v = this.viewportTransform, needsVpt = this[property + 'Vpt']; - if (!fill && !object) { - return; - } - if (fill) { - ctx.save(); - ctx.beginPath(); - ctx.moveTo(0, 0); - ctx.lineTo(this.width, 0); - ctx.lineTo(this.width, this.height); - ctx.lineTo(0, this.height); - ctx.closePath(); - ctx.fillStyle = fill.toLive ? fill.toLive(ctx, this) : fill; - if (needsVpt) { - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - } - ctx.transform(1, 0, 0, 1, fill.offsetX || 0, fill.offsetY || 0); - var m = fill.gradientTransform || fill.patternTransform; - m && ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); - ctx.fill(); - ctx.restore(); - } - if (object) { - ctx.save(); - if (needsVpt) { - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - } - object.render(ctx); - ctx.restore(); - } - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderBackground: function (ctx) { - this._renderBackgroundOrOverlay(ctx, 'background'); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderOverlay: function (ctx) { - this._renderBackgroundOrOverlay(ctx, 'overlay'); - }, - /** - * Returns coordinates of a center of canvas. - * Returned value is an object with top and left properties - * @return {Object} object with "top" and "left" number values - * @deprecated migrate to `getCenterPoint` - */ - getCenter: function () { - return { - top: this.height / 2, - left: this.width / 2, - }; - }, - /** - * Returns coordinates of a center of canvas. - * @return {Point} - */ - getCenterPoint: function () { - return new Point(this.width / 2, this.height / 2); - }, - /** - * Centers object horizontally in the canvas - * @param {fabric.Object} object Object to center horizontally - * @return {fabric.Canvas} thisArg - */ - centerObjectH: function (object) { - return this._centerObject(object, new Point(this.getCenterPoint().x, object.getCenterPoint().y)); - }, - /** - * Centers object vertically in the canvas - * @param {fabric.Object} object Object to center vertically - * @return {fabric.Canvas} thisArg - * @chainable - */ - centerObjectV: function (object) { - return this._centerObject(object, new Point(object.getCenterPoint().x, this.getCenterPoint().y)); - }, - /** - * Centers object vertically and horizontally in the canvas - * @param {fabric.Object} object Object to center vertically and horizontally - * @return {fabric.Canvas} thisArg - * @chainable - */ - centerObject: function (object) { - var center = this.getCenterPoint(); - return this._centerObject(object, center); - }, - /** - * Centers object vertically and horizontally in the viewport - * @param {fabric.Object} object Object to center vertically and horizontally - * @return {fabric.Canvas} thisArg - * @chainable - */ - viewportCenterObject: function (object) { - var vpCenter = this.getVpCenter(); - return this._centerObject(object, vpCenter); - }, - /** - * Centers object horizontally in the viewport, object.top is unchanged - * @param {fabric.Object} object Object to center vertically and horizontally - * @return {fabric.Canvas} thisArg - * @chainable - */ - viewportCenterObjectH: function (object) { - var vpCenter = this.getVpCenter(); - this._centerObject(object, new Point(vpCenter.x, object.getCenterPoint().y)); - return this; - }, - /** - * Centers object Vertically in the viewport, object.top is unchanged - * @param {fabric.Object} object Object to center vertically and horizontally - * @return {fabric.Canvas} thisArg - * @chainable - */ - viewportCenterObjectV: function (object) { - var vpCenter = this.getVpCenter(); - return this._centerObject(object, new Point(object.getCenterPoint().x, vpCenter.y)); - }, - /** - * Calculate the point in canvas that correspond to the center of actual viewport. - * @return {Point} vpCenter, viewport center - * @chainable - */ - getVpCenter: function () { - var center = this.getCenterPoint(), iVpt = invertTransform(this.viewportTransform); - return transformPoint(center, iVpt); - }, - /** - * @private - * @param {fabric.Object} object Object to center - * @param {Point} center Center point - * @return {fabric.Canvas} thisArg - * @chainable - */ - _centerObject: function (object, center) { - object.setXY(center, 'center', 'center'); - object.setCoords(); - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - /** - * Returns dataless JSON representation of canvas - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {String} json string - */ - toDatalessJSON: function (propertiesToInclude) { - return this.toDatalessObject(propertiesToInclude); - }, - /** - * Returns object representation of canvas - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function (propertiesToInclude) { - return this._toObjectMethod('toObject', propertiesToInclude); - }, - /** - * Returns Object representation of canvas - * this alias is provided because if you call JSON.stringify on an instance, - * the toJSON object will be invoked if it exists. - * Having a toJSON method means you can do JSON.stringify(myCanvas) - * @return {Object} JSON compatible object - * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization} - * @see {@link http://jsfiddle.net/fabricjs/pec86/|jsFiddle demo} - * @example JSON without additional properties - * var json = canvas.toJSON(); - * @example JSON with additional properties included - * var json = canvas.toJSON(['lockMovementX', 'lockMovementY', 'lockRotation', 'lockScalingX', 'lockScalingY']); - * @example JSON without default values - * var json = canvas.toJSON(); - */ - toJSON: function () { - return this.toObject(); - }, - /** - * Returns dataless object representation of canvas - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toDatalessObject: function (propertiesToInclude) { - return this._toObjectMethod('toDatalessObject', propertiesToInclude); - }, - /** - * @private - */ - _toObjectMethod: function (methodName, propertiesToInclude) { - const clipPath = this.clipPath; - const clipPathData = clipPath && !clipPath.excludeFromExport - ? this._toObject(clipPath, methodName, propertiesToInclude) - : null; - return Object.assign(Object.assign(Object.assign(Object.assign({ version: version }, pick(this, propertiesToInclude)), { objects: this._objects - .filter((object) => !object.excludeFromExport) - .map((instance) => this._toObject(instance, methodName, propertiesToInclude)) }), this.__serializeBgOverlay(methodName, propertiesToInclude)), (clipPathData ? { clipPath: clipPathData } : null)); - }, - /** - * @private - */ - _toObject: function (instance, methodName, propertiesToInclude) { - var originalValue; - if (!this.includeDefaultValues) { - originalValue = instance.includeDefaultValues; - instance.includeDefaultValues = false; - } - var object = instance[methodName](propertiesToInclude); - if (!this.includeDefaultValues) { - instance.includeDefaultValues = originalValue; - } - return object; - }, - /** - * @private - */ - __serializeBgOverlay: function (methodName, propertiesToInclude) { - var data = {}, bgImage = this.backgroundImage, overlayImage = this.overlayImage, bgColor = this.backgroundColor, overlayColor = this.overlayColor; - if (bgColor && bgColor.toObject) { - if (!bgColor.excludeFromExport) { - data.background = bgColor.toObject(propertiesToInclude); - } - } - else if (bgColor) { - data.background = bgColor; - } - if (overlayColor && overlayColor.toObject) { - if (!overlayColor.excludeFromExport) { - data.overlay = overlayColor.toObject(propertiesToInclude); - } - } - else if (overlayColor) { - data.overlay = overlayColor; - } - if (bgImage && !bgImage.excludeFromExport) { - data.backgroundImage = this._toObject(bgImage, methodName, propertiesToInclude); - } - if (overlayImage && !overlayImage.excludeFromExport) { - data.overlayImage = this._toObject(overlayImage, methodName, propertiesToInclude); - } - return data; - }, - /* _TO_SVG_START_ */ - /** - * When true, getSvgTransform() will apply the StaticCanvas.viewportTransform to the SVG transformation. When true, - * a zoomed canvas will then produce zoomed SVG output. - * @type Boolean - * @default - */ - svgViewportTransformation: true, - /** - * Returns SVG representation of canvas - * @function - * @param {Object} [options] Options object for SVG output - * @param {Boolean} [options.suppressPreamble=false] If true xml tag is not included - * @param {Object} [options.viewBox] SVG viewbox object - * @param {Number} [options.viewBox.x] x-coordinate of viewbox - * @param {Number} [options.viewBox.y] y-coordinate of viewbox - * @param {Number} [options.viewBox.width] Width of viewbox - * @param {Number} [options.viewBox.height] Height of viewbox - * @param {String} [options.encoding=UTF-8] Encoding of SVG output - * @param {String} [options.width] desired width of svg with or without units - * @param {String} [options.height] desired height of svg with or without units - * @param {Function} [reviver] Method for further parsing of svg elements, called after each fabric object converted into svg representation. - * @return {String} SVG string - * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization} - * @see {@link http://jsfiddle.net/fabricjs/jQ3ZZ/|jsFiddle demo} - * @example Normal SVG output - * var svg = canvas.toSVG(); - * @example SVG output without preamble (without <?xml ../>) - * var svg = canvas.toSVG({suppressPreamble: true}); - * @example SVG output with viewBox attribute - * var svg = canvas.toSVG({ - * viewBox: { - * x: 100, - * y: 100, - * width: 200, - * height: 300 - * } - * }); - * @example SVG output with different encoding (default: UTF-8) - * var svg = canvas.toSVG({encoding: 'ISO-8859-1'}); - * @example Modify SVG output with reviver function - * var svg = canvas.toSVG(null, function(svg) { - * return svg.replace('stroke-dasharray: ; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; ', ''); - * }); - */ - toSVG: function (options, reviver) { - options || (options = {}); - options.reviver = reviver; - var markup = []; - this._setSVGPreamble(markup, options); - this._setSVGHeader(markup, options); - if (this.clipPath) { - markup.push('\n'); - } - this._setSVGBgOverlayColor(markup, 'background'); - this._setSVGBgOverlayImage(markup, 'backgroundImage', reviver); - this._setSVGObjects(markup, reviver); - if (this.clipPath) { - markup.push('\n'); - } - this._setSVGBgOverlayColor(markup, 'overlay'); - this._setSVGBgOverlayImage(markup, 'overlayImage', reviver); - markup.push(''); - return markup.join(''); - }, - /** - * @private - */ - _setSVGPreamble: function (markup, options) { - if (options.suppressPreamble) { - return; - } - markup.push('\n', '\n'); - }, - /** - * @private - */ - _setSVGHeader: function (markup, options) { - var width = options.width || this.width, height = options.height || this.height, vpt, viewBox = 'viewBox="0 0 ' + this.width + ' ' + this.height + '" ', NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; - if (options.viewBox) { - viewBox = - 'viewBox="' + - options.viewBox.x + - ' ' + - options.viewBox.y + - ' ' + - options.viewBox.width + - ' ' + - options.viewBox.height + - '" '; - } - else { - if (this.svgViewportTransformation) { - vpt = this.viewportTransform; - viewBox = - 'viewBox="' + - toFixed(-vpt[4] / vpt[0], NUM_FRACTION_DIGITS) + - ' ' + - toFixed(-vpt[5] / vpt[3], NUM_FRACTION_DIGITS) + - ' ' + - toFixed(this.width / vpt[0], NUM_FRACTION_DIGITS) + - ' ' + - toFixed(this.height / vpt[3], NUM_FRACTION_DIGITS) + - '" '; - } - } - markup.push('\n', 'Created with Fabric.js ', version, '\n', '\n', this.createSVGFontFacesMarkup(), this.createSVGRefElementsMarkup(), this.createSVGClipPathMarkup(options), '\n'); - }, - createSVGClipPathMarkup: function (options) { - var clipPath = this.clipPath; - if (clipPath) { - clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++; - return ('\n' + - this.clipPath.toClipPathSVG(options.reviver) + - '\n'); - } - return ''; - }, - /** - * Creates markup containing SVG referenced elements like patterns, gradients etc. - * @return {String} - */ - createSVGRefElementsMarkup: function () { - var _this = this, markup = ['background', 'overlay'].map(function (prop) { - var fill = _this[prop + 'Color']; - if (fill && fill.toLive) { - var shouldTransform = _this[prop + 'Vpt'], vpt = _this.viewportTransform, object = { - width: _this.width / (shouldTransform ? vpt[0] : 1), - height: _this.height / (shouldTransform ? vpt[3] : 1), - }; - return fill.toSVG(object, { - additionalTransform: shouldTransform - ? fabric.util.matrixToSVG(vpt) - : '', - }); - } - }); - return markup.join(''); - }, - /** - * Creates markup containing SVG font faces, - * font URLs for font faces must be collected by developers - * and are not extracted from the DOM by fabricjs - * @param {Array} objects Array of fabric objects - * @return {String} - */ - createSVGFontFacesMarkup: function () { - var markup = '', fontList = {}, obj, fontFamily, style, row, rowIndex, _char, charIndex, i, len, fontPaths = config.fontPaths, objects = []; - this._objects.forEach(function add(object) { - objects.push(object); - if (object._objects) { - object._objects.forEach(add); - } - }); - for (i = 0, len = objects.length; i < len; i++) { - obj = objects[i]; - fontFamily = obj.fontFamily; - if (obj.type.indexOf('text') === -1 || - fontList[fontFamily] || - !fontPaths[fontFamily]) { - continue; - } - fontList[fontFamily] = true; - if (!obj.styles) { - continue; - } - style = obj.styles; - for (rowIndex in style) { - row = style[rowIndex]; - for (charIndex in row) { - _char = row[charIndex]; - fontFamily = _char.fontFamily; - if (!fontList[fontFamily] && fontPaths[fontFamily]) { - fontList[fontFamily] = true; - } - } - } - } - for (var j in fontList) { - markup += [ - '\t\t@font-face {\n', - "\t\t\tfont-family: '", - j, - "';\n", - "\t\t\tsrc: url('", - fontPaths[j], - "');\n", - '\t\t}\n', - ].join(''); - } - if (markup) { - markup = [ - '\t\n', - ].join(''); - } - return markup; - }, - /** - * @private - */ - _setSVGObjects: function (markup, reviver) { - var instance, i, len, objects = this._objects; - for (i = 0, len = objects.length; i < len; i++) { - instance = objects[i]; - if (instance.excludeFromExport) { - continue; - } - this._setSVGObject(markup, instance, reviver); - } - }, - /** - * @private - */ - _setSVGObject: function (markup, instance, reviver) { - markup.push(instance.toSVG(reviver)); - }, - /** - * @private - */ - _setSVGBgOverlayImage: function (markup, property, reviver) { - if (this[property] && - !this[property].excludeFromExport && - this[property].toSVG) { - markup.push(this[property].toSVG(reviver)); - } - }, - /** - * @private - */ - _setSVGBgOverlayColor: function (markup, property) { - var filler = this[property + 'Color'], vpt = this.viewportTransform, finalWidth = this.width, finalHeight = this.height; - if (!filler) { - return; - } - if (filler.toLive) { - var repeat = filler.repeat, iVpt = fabric.util.invertTransform(vpt), shouldInvert = this[property + 'Vpt'], additionalTransform = shouldInvert - ? fabric.util.matrixToSVG(iVpt) - : ''; - markup.push('\n'); - } - else { - markup.push('\n'); - } - }, - /* _TO_SVG_END_ */ - /** - * Moves an object or the objects of a multiple selection - * to the bottom of the stack of drawn objects - * @param {fabric.Object} object Object to send to back - * @return {fabric.Canvas} thisArg - * @chainable - */ - sendToBack: function (object) { - if (!object) { - return this; - } - var activeSelection = this._activeObject, i, obj, objs; - if (object === activeSelection && object.type === 'activeSelection') { - objs = activeSelection._objects; - for (i = objs.length; i--;) { - obj = objs[i]; - removeFromArray(this._objects, obj); - this._objects.unshift(obj); - } - } - else { - removeFromArray(this._objects, object); - this._objects.unshift(object); - } - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - /** - * Moves an object or the objects of a multiple selection - * to the top of the stack of drawn objects - * @param {fabric.Object} object Object to send - * @return {fabric.Canvas} thisArg - * @chainable - */ - bringToFront: function (object) { - if (!object) { - return this; - } - var activeSelection = this._activeObject, i, obj, objs; - if (object === activeSelection && object.type === 'activeSelection') { - objs = activeSelection._objects; - for (i = 0; i < objs.length; i++) { - obj = objs[i]; - removeFromArray(this._objects, obj); - this._objects.push(obj); - } - } - else { - removeFromArray(this._objects, object); - this._objects.push(object); - } - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - /** - * Moves an object or a selection down in stack of drawn objects - * An optional parameter, intersecting allows to move the object in behind - * the first intersecting object. Where intersection is calculated with - * bounding box. If no intersection is found, there will not be change in the - * stack. - * @param {fabric.Object} object Object to send - * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object - * @return {fabric.Canvas} thisArg - * @chainable - */ - sendBackwards: function (object, intersecting) { - if (!object) { - return this; - } - var activeSelection = this._activeObject, i, obj, idx, newIdx, objs, objsMoved = 0; - if (object === activeSelection && object.type === 'activeSelection') { - objs = activeSelection._objects; - for (i = 0; i < objs.length; i++) { - obj = objs[i]; - idx = this._objects.indexOf(obj); - if (idx > 0 + objsMoved) { - newIdx = idx - 1; - removeFromArray(this._objects, obj); - this._objects.splice(newIdx, 0, obj); - } - objsMoved++; - } - } - else { - idx = this._objects.indexOf(object); - if (idx !== 0) { - // if object is not on the bottom of stack - newIdx = this._findNewLowerIndex(object, idx, intersecting); - removeFromArray(this._objects, object); - this._objects.splice(newIdx, 0, object); - } - } - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - /** - * @private - */ - _findNewLowerIndex: function (object, idx, intersecting) { - var newIdx, i; - if (intersecting) { - newIdx = idx; - // traverse down the stack looking for the nearest intersecting object - for (i = idx - 1; i >= 0; --i) { - var isIntersecting = object.intersectsWithObject(this._objects[i]) || - object.isContainedWithinObject(this._objects[i]) || - this._objects[i].isContainedWithinObject(object); - if (isIntersecting) { - newIdx = i; - break; - } - } - } - else { - newIdx = idx - 1; - } - return newIdx; - }, - /** - * Moves an object or a selection up in stack of drawn objects - * An optional parameter, intersecting allows to move the object in front - * of the first intersecting object. Where intersection is calculated with - * bounding box. If no intersection is found, there will not be change in the - * stack. - * @param {fabric.Object} object Object to send - * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object - * @return {fabric.Canvas} thisArg - * @chainable - */ - bringForward: function (object, intersecting) { - if (!object) { - return this; - } - var activeSelection = this._activeObject, i, obj, idx, newIdx, objs, objsMoved = 0; - if (object === activeSelection && object.type === 'activeSelection') { - objs = activeSelection._objects; - for (i = objs.length; i--;) { - obj = objs[i]; - idx = this._objects.indexOf(obj); - if (idx < this._objects.length - 1 - objsMoved) { - newIdx = idx + 1; - removeFromArray(this._objects, obj); - this._objects.splice(newIdx, 0, obj); - } - objsMoved++; - } - } - else { - idx = this._objects.indexOf(object); - if (idx !== this._objects.length - 1) { - // if object is not on top of stack (last item in an array) - newIdx = this._findNewUpperIndex(object, idx, intersecting); - removeFromArray(this._objects, object); - this._objects.splice(newIdx, 0, object); - } - } - this.renderOnAddRemove && this.requestRenderAll(); - return this; - }, - /** - * @private - */ - _findNewUpperIndex: function (object, idx, intersecting) { - var newIdx, i, len; - if (intersecting) { - newIdx = idx; - // traverse up the stack looking for the nearest intersecting object - for (i = idx + 1, len = this._objects.length; i < len; ++i) { - var isIntersecting = object.intersectsWithObject(this._objects[i]) || - object.isContainedWithinObject(this._objects[i]) || - this._objects[i].isContainedWithinObject(object); - if (isIntersecting) { - newIdx = i; - break; - } - } - } - else { - newIdx = idx + 1; - } - return newIdx; - }, - /** - * Moves an object to specified level in stack of drawn objects - * @param {fabric.Object} object Object to send - * @param {Number} index Position to move to - * @return {fabric.Canvas} thisArg - * @chainable - */ - moveTo: function (object, index) { - removeFromArray(this._objects, object); - this._objects.splice(index, 0, object); - return this.renderOnAddRemove && this.requestRenderAll(); - }, - /** - * Waits until rendering has settled to destroy the canvas - * @returns {Promise} a promise resolving to `true` once the canvas has been destroyed or to `false` if the canvas has was already destroyed - * @throws if aborted by a consequent call - */ - dispose: function () { - this.disposed = true; - return new Promise((resolve, reject) => { - const task = () => { - this.destroy(); - resolve(true); - }; - task.kill = reject; - if (this.__cleanupTask) { - this.__cleanupTask.kill('aborted'); - } - if (this.destroyed) { - resolve(false); - } - else if (this.nextRenderHandle) { - this.__cleanupTask = task; - } - else { - task(); - } - }); - }, - /** - * Clears the canvas element, disposes objects and frees resources - * - * **CAUTION**: - * - * This method is **UNSAFE**. - * You may encounter a race condition using it if there's a requested render. - * Call this method only if you are sure rendering has settled. - * Consider using {@link dispose} as it is **SAFE** - * - * @private - */ - destroy: function () { - this.destroyed = true; - this.cancelRequestedRender(); - this.forEachObject(function (object) { - object.dispose && object.dispose(); - }); - this._objects = []; - if (this.backgroundImage && this.backgroundImage.dispose) { - this.backgroundImage.dispose(); - } - this.backgroundImage = null; - if (this.overlayImage && this.overlayImage.dispose) { - this.overlayImage.dispose(); - } - this.overlayImage = null; - this._iTextInstances = null; - this.contextContainer = null; - // restore canvas style and attributes - this.lowerCanvasEl.classList.remove('lower-canvas'); - this.lowerCanvasEl.removeAttribute('data-fabric'); - if (this.interactive) { - this.lowerCanvasEl.style.cssText = this._originalCanvasStyle; - delete this._originalCanvasStyle; - } - // restore canvas size to original size in case retina scaling was applied - this.lowerCanvasEl.setAttribute('width', this.width); - this.lowerCanvasEl.setAttribute('height', this.height); - fabric.util.cleanUpJsdomNode(this.lowerCanvasEl); - this.lowerCanvasEl = undefined; - }, - /** - * Returns a string representation of an instance - * @return {String} string representation of an instance - */ - toString: function () { - return ('#'); - }, - }); - extend(fabric.StaticCanvas.prototype, fabric.Observable); - extend(fabric.StaticCanvas.prototype, fabric.DataURLExporter); - extend(fabric.StaticCanvas, - /** @lends fabric.StaticCanvas */ { - /** - * @static - * @type String - * @default - */ - EMPTY_JSON: '{"objects": [], "background": "white"}', - /** - * Provides a way to check support of some of the canvas methods - * (either those of HTMLCanvasElement itself, or rendering context) - * - * @param {String} methodName Method to check support for; - * Could be one of "setLineDash" - * @return {Boolean | null} `true` if method is supported (or at least exists), - * `null` if canvas element or context can not be initialized - */ - supports: function (methodName) { - var el = createCanvasElement(); - if (!el || !el.getContext) { - return null; - } - var ctx = el.getContext('2d'); - if (!ctx) { - return null; - } - switch (methodName) { - case 'setLineDash': - return typeof ctx.setLineDash !== 'undefined'; - default: - return null; - } - }, - }); - if (fabric.isLikelyNode) { - fabric.StaticCanvas.prototype.createPNGStream = function () { - var impl = getNodeCanvas(this.lowerCanvasEl); - return impl && impl.createPNGStream(); - }; - fabric.StaticCanvas.prototype.createJPEGStream = function (opts) { - var impl = getNodeCanvas(this.lowerCanvasEl); - return impl && impl.createJPEGStream(opts); - }; - } -})(typeof exports !== 'undefined' ? exports : window); + * @private + * @param {String|Array} color Color value to parse + */ + _tryParsingColor: function(color) { + var source; + + if (color in Color.colorNameMap) { + color = Color.colorNameMap[color]; + } + + if (color === 'transparent') { + source = [255, 255, 255, 0]; + } + + if (!source) { + source = Color.sourceFromHex(color); + } + if (!source) { + source = Color.sourceFromRgb(color); + } + if (!source) { + source = Color.sourceFromHsl(color); + } + if (!source) { + //if color is not recognize let's make black as canvas does + source = [0, 0, 0, 1]; + } + if (source) { + this.setSource(source); + } + }, -//@ts-nocheck -(function (global) { - var fabric = global.fabric, getPointer = fabric.util.getPointer, degreesToRadians = fabric.util.degreesToRadians, isTouchEvent = fabric.util.isTouchEvent; /** - * Canvas class - * @class fabric.Canvas - * @extends fabric.StaticCanvas - * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#canvas} - * @see {@link fabric.Canvas#initialize} for constructor definition - * - * @fires object:modified at the end of a transform or any change when statefull is true - * @fires object:rotating while an object is being rotated from the control - * @fires object:scaling while an object is being scaled by controls - * @fires object:moving while an object is being dragged - * @fires object:skewing while an object is being skewed from the controls - * - * @fires before:transform before a transform is is started - * @fires before:selection:cleared - * @fires selection:cleared - * @fires selection:updated - * @fires selection:created - * - * @fires path:created after a drawing operation ends and the path is added - * @fires mouse:down - * @fires mouse:move - * @fires mouse:up - * @fires mouse:down:before on mouse down, before the inner fabric logic runs - * @fires mouse:move:before on mouse move, before the inner fabric logic runs - * @fires mouse:up:before on mouse up, before the inner fabric logic runs - * @fires mouse:over - * @fires mouse:out - * @fires mouse:dblclick whenever a native dbl click event fires on the canvas. - * - * @fires dragover - * @fires dragenter - * @fires dragleave - * @fires drag:enter object drag enter - * @fires drag:leave object drag leave - * @fires drop:before before drop event. Prepare for the drop event (same native event). - * @fires drop - * @fires drop:after after drop event. Run logic on canvas after event has been accepted/declined (same native event). - * @example - * let a: fabric.Object, b: fabric.Object; - * let flag = false; - * canvas.add(a, b); - * a.on('drop:before', opt => { - * // we want a to accept the drop even though it's below b in the stack - * flag = this.canDrop(opt.e); - * }); - * b.canDrop = function(e) { - * !flag && this.callSuper('canDrop', e); - * } - * b.on('dragover', opt => b.set('fill', opt.dropTarget === b ? 'pink' : 'black')); - * a.on('drop', opt => { - * opt.e.defaultPrevented // drop occured - * opt.didDrop // drop occured on canvas - * opt.target // drop target - * opt.target !== a && a.set('text', 'I lost'); - * }); - * canvas.on('drop:after', opt => { - * // inform user who won - * if(!opt.e.defaultPrevented) { - * // no winners - * } - * else if(!opt.didDrop) { - * // my objects didn't win, some other lucky object - * } - * else { - * // we have a winner it's opt.target!! - * } - * }) - * - * @fires after:render at the end of the render process, receives the context in the callback - * @fires before:render at start the render process, receives the context in the callback - * - * @fires contextmenu:before - * @fires contextmenu - * @example - * let handler; - * targets.forEach(target => { - * target.on('contextmenu:before', opt => { - * // decide which target should handle the event before canvas hijacks it - * if (someCaseHappens && opt.targets.includes(target)) { - * handler = target; - * } - * }); - * target.on('contextmenu', opt => { - * // do something fantastic - * }); - * }); - * canvas.on('contextmenu', opt => { - * if (!handler) { - * // no one takes responsibility, it's always left to me - * // let's show them how it's done! - * } - * }); - * + * Adapted from https://github.com/mjijackson + * @private + * @param {Number} r Red color value + * @param {Number} g Green color value + * @param {Number} b Blue color value + * @return {Array} Hsl color */ - fabric.Canvas = fabric.util.createClass(fabric.StaticCanvas, - /** @lends fabric.Canvas.prototype */ { - /** - * Constructor - * @param {HTMLElement | String} el <canvas> element to initialize instance on - * @param {Object} [options] Options object - * @return {Object} thisArg - */ - initialize: function (el, options) { - options || (options = {}); - this.renderAndResetBound = this.renderAndReset.bind(this); - this.requestRenderAllBound = this.requestRenderAll.bind(this); - this._initStatic(el, options); - this._initInteractive(); - this._createCacheCanvas(); - }, - /** - * When true, objects can be transformed by one side (unproportionally) - * when dragged on the corners that normally would not do that. - * @type Boolean - * @default - * @since fabric 4.0 // changed name and default value - */ - uniformScaling: true, - /** - * Indicates which key switches uniform scaling. - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * If `null` or 'none' or any other string that is not a modifier key - * feature is disabled. - * totally wrong named. this sounds like `uniform scaling` - * if Canvas.uniformScaling is true, pressing this will set it to false - * and viceversa. - * @since 1.6.2 - * @type String - * @default - */ - uniScaleKey: 'shiftKey', - /** - * When true, objects use center point as the origin of scale transformation. - * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). - * @since 1.3.4 - * @type Boolean - * @default - */ - centeredScaling: false, - /** - * When true, objects use center point as the origin of rotate transformation. - * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). - * @since 1.3.4 - * @type Boolean - * @default - */ - centeredRotation: false, - /** - * Indicates which key enable centered Transform - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * If `null` or 'none' or any other string that is not a modifier key - * feature is disabled feature disabled. - * @since 1.6.2 - * @type String - * @default - */ - centeredKey: 'altKey', - /** - * Indicates which key enable alternate action on corner - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * If `null` or 'none' or any other string that is not a modifier key - * feature is disabled feature disabled. - * @since 1.6.2 - * @type String - * @default - */ - altActionKey: 'shiftKey', - /** - * Indicates that canvas is interactive. This property should not be changed. - * @type Boolean - * @default - */ - interactive: true, - /** - * Indicates whether group selection should be enabled - * @type Boolean - * @default - */ - selection: true, - /** - * Indicates which key or keys enable multiple click selection - * Pass value as a string or array of strings - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * If `null` or empty or containing any other string that is not a modifier key - * feature is disabled. - * @since 1.6.2 - * @type String|Array - * @default - */ - selectionKey: 'shiftKey', - /** - * Indicates which key enable alternative selection - * in case of target overlapping with active object - * values: 'altKey', 'shiftKey', 'ctrlKey'. - * For a series of reason that come from the general expectations on how - * things should work, this feature works only for preserveObjectStacking true. - * If `null` or 'none' or any other string that is not a modifier key - * feature is disabled. - * @since 1.6.5 - * @type null|String - * @default - */ - altSelectionKey: null, - /** - * Color of selection - * @type String - * @default - */ - selectionColor: 'rgba(100, 100, 255, 0.3)', - /** - * Default dash array pattern - * If not empty the selection border is dashed - * @type Array - */ - selectionDashArray: [], - /** - * Color of the border of selection (usually slightly darker than color of selection itself) - * @type String - * @default - */ - selectionBorderColor: 'rgba(255, 255, 255, 0.3)', - /** - * Width of a line used in object/group selection - * @type Number - * @default - */ - selectionLineWidth: 1, - /** - * Select only shapes that are fully contained in the dragged selection rectangle. - * @type Boolean - * @default - */ - selectionFullyContained: false, - /** - * Default cursor value used when hovering over an object on canvas - * @type String - * @default - */ - hoverCursor: 'move', - /** - * Default cursor value used when moving an object on canvas - * @type String - * @default - */ - moveCursor: 'move', - /** - * Default cursor value used for the entire canvas - * @type String - * @default - */ - defaultCursor: 'default', - /** - * Cursor value used during free drawing - * @type String - * @default - */ - freeDrawingCursor: 'crosshair', - /** - * Cursor value used for disabled elements ( corners with disabled action ) - * @type String - * @since 2.0.0 - * @default - */ - notAllowedCursor: 'not-allowed', - /** - * Default element class that's given to wrapper (div) element of canvas - * @type String - * @default - */ - containerClass: 'canvas-container', - /** - * When true, object detection happens on per-pixel basis rather than on per-bounding-box - * @type Boolean - * @default - */ - perPixelTargetFind: false, - /** - * Number of pixels around target pixel to tolerate (consider active) during object detection - * @type Number - * @default - */ - targetFindTolerance: 0, - /** - * When true, target detection is skipped. Target detection will return always undefined. - * click selection won't work anymore, events will fire with no targets. - * if something is selected before setting it to true, it will be deselected at the first click. - * area selection will still work. check the `selection` property too. - * if you deactivate both, you should look into staticCanvas. - * @type Boolean - * @default - */ - skipTargetFind: false, - /** - * When true, mouse events on canvas (mousedown/mousemove/mouseup) result in free drawing. - * After mousedown, mousemove creates a shape, - * and then mouseup finalizes it and adds an instance of `fabric.Path` onto canvas. - * @tutorial {@link http://fabricjs.com/fabric-intro-part-4#free_drawing} - * @type Boolean - * @default - */ - isDrawingMode: false, - /** - * Indicates whether objects should remain in current stack position when selected. - * When false objects are brought to top and rendered as part of the selection group - * @type Boolean - * @default - */ - preserveObjectStacking: false, - /** - * Indicates the angle that an object will lock to while rotating. - * @type Number - * @since 1.6.7 - * @default - */ - snapAngle: 0, - /** - * Indicates the distance from the snapAngle the rotation will lock to the snapAngle. - * When `null`, the snapThreshold will default to the snapAngle. - * @type null|Number - * @since 1.6.7 - * @default - */ - snapThreshold: null, - /** - * Indicates if the right click on canvas can output the context menu or not - * @type Boolean - * @since 1.6.5 - * @default - */ - stopContextMenu: false, - /** - * Indicates if the canvas can fire right click events - * @type Boolean - * @since 1.6.5 - * @default - */ - fireRightClick: false, - /** - * Indicates if the canvas can fire middle click events - * @type Boolean - * @since 1.7.8 - * @default - */ - fireMiddleClick: false, - /** - * Keep track of the subTargets for Mouse Events - * @type fabric.Object[] - */ - targets: [], - /** - * When the option is enabled, PointerEvent is used instead of MouseEvent. - * @type Boolean - * @default - */ - enablePointerEvents: false, - /** - * Keep track of the hovered target - * @type fabric.Object - * @private - */ - _hoveredTarget: null, - /** - * hold the list of nested targets hovered - * @type fabric.Object[] - * @private - */ - _hoveredTargets: [], - /** - * hold the list of objects to render - * @type fabric.Object[] - * @private - */ - _objectsToRender: undefined, - /** - * @private - */ - _initInteractive: function () { - this._currentTransform = null; - this._groupSelector = null; - this._initWrapperElement(); - this._createUpperCanvas(); - this._initEventListeners(); - this._initRetinaScaling(); - this.freeDrawingBrush = - fabric.PencilBrush && new fabric.PencilBrush(this); - this.calcOffset(); - }, - /** - * @private - * @param {fabric.Object} obj Object that was added - */ - _onObjectAdded: function (obj) { - this._objectsToRender = undefined; - this.callSuper('_onObjectAdded', obj); - }, - /** - * @private - * @param {fabric.Object} obj Object that was removed - */ - _onObjectRemoved: function (obj) { - this._objectsToRender = undefined; - // removing active object should fire "selection:cleared" events - if (obj === this._activeObject) { - this.fire('before:selection:cleared', { target: obj }); - this._discardActiveObject(); - this.fire('selection:cleared', { target: obj }); - obj.fire('deselected'); - } - if (obj === this._hoveredTarget) { - this._hoveredTarget = null; - this._hoveredTargets = []; - } - this.callSuper('_onObjectRemoved', obj); - }, - /** - * Divides objects in two groups, one to render immediately - * and one to render as activeGroup. - * @return {Array} objects to render immediately and pushes the other in the activeGroup. - */ - _chooseObjectsToRender: function () { - var activeObjects = this.getActiveObjects(), object, objsToRender, activeGroupObjects; - if (!this.preserveObjectStacking && activeObjects.length > 1) { - objsToRender = []; - activeGroupObjects = []; - for (var i = 0, length = this._objects.length; i < length; i++) { - object = this._objects[i]; - if (activeObjects.indexOf(object) === -1) { - objsToRender.push(object); - } - else { - activeGroupObjects.push(object); - } - } - if (activeObjects.length > 1) { - this._activeObject._objects = activeGroupObjects; - } - objsToRender.push.apply(objsToRender, activeGroupObjects); - } - // in case a single object is selected render it's entire parent above the other objects - else if (!this.preserveObjectStacking && activeObjects.length === 1) { - var target = activeObjects[0], ancestors = target.getAncestors(true); - var topAncestor = ancestors.length === 0 ? target : ancestors.pop(); - objsToRender = this._objects.slice(); - var index = objsToRender.indexOf(topAncestor); - index > -1 && - objsToRender.splice(objsToRender.indexOf(topAncestor), 1); - objsToRender.push(topAncestor); - } - else { - objsToRender = this._objects; - } - return objsToRender; - }, - /** - * Renders both the top canvas and the secondary container canvas. - * @return {fabric.Canvas} instance - * @chainable - */ - renderAll: function () { - this.cancelRequestedRender(); - if (this.destroyed) { - return; - } - if (this.contextTopDirty && - !this._groupSelector && - !this.isDrawingMode) { - this.clearContext(this.contextTop); - this.contextTopDirty = false; - } - if (this.hasLostContext) { - this.renderTopLayer(this.contextTop); - this.hasLostContext = false; - } - !this._objectsToRender && - (this._objectsToRender = this._chooseObjectsToRender()); - this.renderCanvas(this.contextContainer, this._objectsToRender); - return this; - }, - renderTopLayer: function (ctx) { - ctx.save(); - if (this.isDrawingMode && this._isCurrentlyDrawing) { - this.freeDrawingBrush && this.freeDrawingBrush._render(); - this.contextTopDirty = true; - } - // we render the top context - last object - if (this.selection && this._groupSelector) { - this._drawSelection(ctx); - this.contextTopDirty = true; - } - ctx.restore(); - }, - /** - * Method to render only the top canvas. - * Also used to render the group selection box. - * @return {fabric.Canvas} thisArg - * @chainable - */ - renderTop: function () { - var ctx = this.contextTop; - this.clearContext(ctx); - this.renderTopLayer(ctx); - this.fire('after:render'); - return this; - }, - /** - * @private - */ - _normalizePointer: function (object, pointer) { - var m = object.calcTransformMatrix(), invertedM = fabric.util.invertTransform(m), vptPointer = this.restorePointerVpt(pointer); - return fabric.util.transformPoint(vptPointer, invertedM); - }, - /** - * Returns true if object is transparent at a certain location - * @param {fabric.Object} target Object to check - * @param {Number} x Left coordinate - * @param {Number} y Top coordinate - * @return {Boolean} - */ - isTargetTransparent: function (target, x, y) { - // in case the target is the activeObject, we cannot execute this optimization - // because we need to draw controls too. - if (target.shouldCache() && - target._cacheCanvas && - target !== this._activeObject) { - var normalizedPointer = this._normalizePointer(target, { - x: x, - y: y, - }), targetRelativeX = Math.max(target.cacheTranslationX + normalizedPointer.x * target.zoomX, 0), targetRelativeY = Math.max(target.cacheTranslationY + normalizedPointer.y * target.zoomY, 0); - var isTransparent = fabric.util.isTransparent(target._cacheContext, Math.round(targetRelativeX), Math.round(targetRelativeY), this.targetFindTolerance); - return isTransparent; - } - var ctx = this.contextCache, originalColor = target.selectionBackgroundColor, v = this.viewportTransform; - target.selectionBackgroundColor = ''; - this.clearContext(ctx); - ctx.save(); - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - target.render(ctx); - ctx.restore(); - target.selectionBackgroundColor = originalColor; - var isTransparent = fabric.util.isTransparent(ctx, x, y, this.targetFindTolerance); - return isTransparent; - }, - /** - * takes an event and determines if selection key has been pressed - * @private - * @param {Event} e Event object - */ - _isSelectionKeyPressed: function (e) { - var selectionKeyPressed = false; - if (Array.isArray(this.selectionKey)) { - selectionKeyPressed = !!this.selectionKey.find(function (key) { - return e[key] === true; - }); - } - else { - selectionKeyPressed = e[this.selectionKey]; - } - return selectionKeyPressed; - }, - /** - * @private - * @param {Event} e Event object - * @param {fabric.Object} target - */ - _shouldClearSelection: function (e, target) { - var activeObjects = this.getActiveObjects(), activeObject = this._activeObject; - return (!target || - (target && - activeObject && - activeObjects.length > 1 && - activeObjects.indexOf(target) === -1 && - activeObject !== target && - !this._isSelectionKeyPressed(e)) || - (target && !target.evented) || - (target && - !target.selectable && - activeObject && - activeObject !== target)); - }, - /** - * centeredScaling from object can't override centeredScaling from canvas. - * this should be fixed, since object setting should take precedence over canvas. - * also this should be something that will be migrated in the control properties. - * as ability to define the origin of the transformation that the control provide. - * @private - * @param {fabric.Object} target - * @param {String} action - * @param {Boolean} altKey - */ - _shouldCenterTransform: function (target, action, altKey) { - if (!target) { - return; - } - var centerTransform; - if (action === 'scale' || - action === 'scaleX' || - action === 'scaleY' || - action === 'resizing') { - centerTransform = this.centeredScaling || target.centeredScaling; - } - else if (action === 'rotate') { - centerTransform = this.centeredRotation || target.centeredRotation; - } - return centerTransform ? !altKey : altKey; - }, - /** - * should disappear before release 4.0 - * @private - */ - _getOriginFromCorner: function (target, corner) { - var origin = { - x: target.originX, - y: target.originY, - }; - if (corner === 'ml' || corner === 'tl' || corner === 'bl') { - origin.x = 'right'; - } - else if (corner === 'mr' || corner === 'tr' || corner === 'br') { - origin.x = 'left'; - } - if (corner === 'tl' || corner === 'mt' || corner === 'tr') { - origin.y = 'bottom'; - } - else if (corner === 'bl' || corner === 'mb' || corner === 'br') { - origin.y = 'top'; - } - return origin; - }, - /** - * @private - * @param {Boolean} alreadySelected true if target is already selected - * @param {String} corner a string representing the corner ml, mr, tl ... - * @param {Event} e Event object - * @param {fabric.Object} [target] inserted back to help overriding. Unused - */ - _getActionFromCorner: function (alreadySelected, corner, e, target) { - if (!corner || !alreadySelected) { - return 'drag'; - } - var control = target.controls[corner]; - return control.getActionName(e, control, target); - }, - /** - * @private - * @param {Event} e Event object - * @param {fabric.Object} target - */ - _setupCurrentTransform: function (e, target, alreadySelected) { - if (!target) { - return; - } - var pointer = this.getPointer(e); - if (target.group) { - // transform pointer to target's containing coordinate plane - pointer = fabric.util.transformPoint(pointer, fabric.util.invertTransform(target.group.calcTransformMatrix())); - } - var corner = target.__corner, control = target.controls[corner], actionHandler = alreadySelected && corner - ? control.getActionHandler(e, target, control) - : fabric.controlsUtils.dragHandler, action = this._getActionFromCorner(alreadySelected, corner, e, target), origin = this._getOriginFromCorner(target, corner), altKey = e[this.centeredKey], - /** - * relative to target's containing coordinate plane - * both agree on every point - **/ - transform = { - target: target, - action: action, - actionHandler: actionHandler, - corner: corner, - scaleX: target.scaleX, - scaleY: target.scaleY, - skewX: target.skewX, - skewY: target.skewY, - offsetX: pointer.x - target.left, - offsetY: pointer.y - target.top, - originX: origin.x, - originY: origin.y, - ex: pointer.x, - ey: pointer.y, - lastX: pointer.x, - lastY: pointer.y, - theta: degreesToRadians(target.angle), - width: target.width * target.scaleX, - shiftKey: e.shiftKey, - altKey: altKey, - original: fabric.util.saveObjectTransform(target), - }; - if (this._shouldCenterTransform(target, action, altKey)) { - transform.originX = 'center'; - transform.originY = 'center'; - } - transform.original.originX = origin.x; - transform.original.originY = origin.y; - this._currentTransform = transform; - this._beforeTransform(e); - }, - /** - * Set the cursor type of the canvas element - * @param {String} value Cursor type of the canvas element. - * @see http://www.w3.org/TR/css3-ui/#cursor - */ - setCursor: function (value) { - this.upperCanvasEl.style.cursor = value; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx to draw the selection on - */ - _drawSelection: function (ctx) { - var selector = this._groupSelector, viewportStart = new Point(selector.ex, selector.ey), start = fabric.util.transformPoint(viewportStart, this.viewportTransform), viewportExtent = new Point(selector.ex + selector.left, selector.ey + selector.top), extent = fabric.util.transformPoint(viewportExtent, this.viewportTransform), minX = Math.min(start.x, extent.x), minY = Math.min(start.y, extent.y), maxX = Math.max(start.x, extent.x), maxY = Math.max(start.y, extent.y), strokeOffset = this.selectionLineWidth / 2; - if (this.selectionColor) { - ctx.fillStyle = this.selectionColor; - ctx.fillRect(minX, minY, maxX - minX, maxY - minY); - } - if (!this.selectionLineWidth || !this.selectionBorderColor) { - return; - } - ctx.lineWidth = this.selectionLineWidth; - ctx.strokeStyle = this.selectionBorderColor; - minX += strokeOffset; - minY += strokeOffset; - maxX -= strokeOffset; - maxY -= strokeOffset; - // selection border - fabric.Object.prototype._setLineDash.call(this, ctx, this.selectionDashArray); - ctx.strokeRect(minX, minY, maxX - minX, maxY - minY); - }, - /** - * Method that determines what object we are clicking on - * the skipGroup parameter is for internal use, is needed for shift+click action - * 11/09/2018 TODO: would be cool if findTarget could discern between being a full target - * or the outside part of the corner. - * @param {Event} e mouse event - * @param {Boolean} skipGroup when true, activeGroup is skipped and only objects are traversed through - * @return {fabric.Object} the target found - */ - findTarget: function (e, skipGroup) { - if (this.skipTargetFind) { - return; - } - var ignoreZoom = true, pointer = this.getPointer(e, ignoreZoom), activeObject = this._activeObject, aObjects = this.getActiveObjects(), activeTarget, activeTargetSubs, isTouch = isTouchEvent(e), shouldLookForActive = (aObjects.length > 1 && !skipGroup) || aObjects.length === 1; - // first check current group (if one exists) - // active group does not check sub targets like normal groups. - // if active group just exits. - this.targets = []; - // if we hit the corner of an activeObject, let's return that. - if (shouldLookForActive && - activeObject._findTargetCorner(pointer, isTouch)) { - return activeObject; - } - if (aObjects.length > 1 && - activeObject.type === 'activeSelection' && - !skipGroup && - this.searchPossibleTargets([activeObject], pointer)) { - return activeObject; - } - if (aObjects.length === 1 && - activeObject === this.searchPossibleTargets([activeObject], pointer)) { - if (!this.preserveObjectStacking) { - return activeObject; - } - else { - activeTarget = activeObject; - activeTargetSubs = this.targets; - this.targets = []; - } - } - var target = this.searchPossibleTargets(this._objects, pointer); - if (e[this.altSelectionKey] && - target && - activeTarget && - target !== activeTarget) { - target = activeTarget; - this.targets = activeTargetSubs; - } - return target; - }, - /** - * Checks point is inside the object. - * @param {Object} [pointer] x,y object of point coordinates we want to check. - * @param {fabric.Object} obj Object to test against - * @param {Object} [globalPointer] x,y object of point coordinates relative to canvas used to search per pixel target. - * @return {Boolean} true if point is contained within an area of given object - * @private - */ - _checkTarget: function (pointer, obj, globalPointer) { - if (obj && - obj.visible && - obj.evented && - // http://www.geog.ubc.ca/courses/klink/gis.notes/ncgia/u32.html - // http://idav.ucdavis.edu/~okreylos/TAship/Spring2000/PointInPolygon.html - obj.containsPoint(pointer)) { - if ((this.perPixelTargetFind || obj.perPixelTargetFind) && - !obj.isEditing) { - var isTransparent = this.isTargetTransparent(obj, globalPointer.x, globalPointer.y); - if (!isTransparent) { - return true; - } - } - else { - return true; - } - } - }, - /** - * Internal Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted - * @param {Array} [objects] objects array to look into - * @param {Object} [pointer] x,y object of point coordinates we want to check. - * @return {fabric.Object} **top most object from given `objects`** that contains pointer - * @private - */ - _searchPossibleTargets: function (objects, pointer) { - // Cache all targets where their bounding box contains point. - var target, i = objects.length, subTarget; - // Do not check for currently grouped objects, since we check the parent group itself. - // until we call this function specifically to search inside the activeGroup - while (i--) { - var objToCheck = objects[i]; - var pointerToUse = objToCheck.group - ? this._normalizePointer(objToCheck.group, pointer) - : pointer; - if (this._checkTarget(pointerToUse, objToCheck, pointer)) { - target = objects[i]; - if (target.subTargetCheck && Array.isArray(target._objects)) { - subTarget = this._searchPossibleTargets(target._objects, pointer); - subTarget && this.targets.push(subTarget); - } - break; - } - } - return target; - }, - /** - * Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted - * @see {@link fabric.Canvas#_searchPossibleTargets} - * @param {Array} [objects] objects array to look into - * @param {Object} [pointer] x,y object of point coordinates we want to check. - * @return {fabric.Object} **top most object on screen** that contains pointer - */ - searchPossibleTargets: function (objects, pointer) { - var target = this._searchPossibleTargets(objects, pointer); - return target && target.interactive && this.targets[0] - ? this.targets[0] - : target; - }, - /** - * Returns pointer coordinates without the effect of the viewport - * @param {Object} pointer with "x" and "y" number values - * @return {Object} object with "x" and "y" number values - */ - restorePointerVpt: function (pointer) { - return fabric.util.transformPoint(pointer, fabric.util.invertTransform(this.viewportTransform)); - }, - /** - * Returns pointer coordinates relative to canvas. - * Can return coordinates with or without viewportTransform. - * ignoreVpt false gives back coordinates that represent - * the point clicked on canvas element. - * ignoreVpt true gives back coordinates after being processed - * by the viewportTransform ( sort of coordinates of what is displayed - * on the canvas where you are clicking. - * ignoreVpt true = HTMLElement coordinates relative to top,left - * ignoreVpt false, default = fabric space coordinates, the same used for shape position - * To interact with your shapes top and left you want to use ignoreVpt true - * most of the time, while ignoreVpt false will give you coordinates - * compatible with the object.oCoords system. - * of the time. - * @param {Event} e - * @param {Boolean} ignoreVpt - * @return {Point} - */ - getPointer: function (e, ignoreVpt) { - // return cached values if we are in the event processing chain - if (this._absolutePointer && !ignoreVpt) { - return this._absolutePointer; - } - if (this._pointer && ignoreVpt) { - return this._pointer; - } - var pointer = getPointer(e), upperCanvasEl = this.upperCanvasEl, bounds = upperCanvasEl.getBoundingClientRect(), boundsWidth = bounds.width || 0, boundsHeight = bounds.height || 0, cssScale; - if (!boundsWidth || !boundsHeight) { - if ('top' in bounds && 'bottom' in bounds) { - boundsHeight = Math.abs(bounds.top - bounds.bottom); - } - if ('right' in bounds && 'left' in bounds) { - boundsWidth = Math.abs(bounds.right - bounds.left); - } - } - this.calcOffset(); - pointer.x = pointer.x - this._offset.left; - pointer.y = pointer.y - this._offset.top; - if (!ignoreVpt) { - pointer = this.restorePointerVpt(pointer); - } - var retinaScaling = this.getRetinaScaling(); - if (retinaScaling !== 1) { - pointer.x /= retinaScaling; - pointer.y /= retinaScaling; - } - // If bounds are not available (i.e. not visible), do not apply scale. - cssScale = - boundsWidth === 0 || boundsHeight === 0 - ? new Point(1, 1) - : new Point(upperCanvasEl.width / boundsWidth, upperCanvasEl.height / boundsHeight); - return new Point(pointer.x * cssScale.x, pointer.y * cssScale.y); - }, - /** - * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em) - * @param {Object} dimensions Object with width/height properties - * @param {Number|String} [dimensions.width] Width of canvas element - * @param {Number|String} [dimensions.height] Height of canvas element - * @param {Object} [options] Options object - * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions - * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions - * @return {fabric.Canvas} thisArg - * @chainable - */ - setDimensions: function (dimensions, options) { - this._resetTransformEventData(); - return this.callSuper('setDimensions', dimensions, options); - }, - /** - * @private - * @throws {CANVAS_INIT_ERROR} If canvas can not be initialized - */ - _createUpperCanvas: function () { - var lowerCanvasEl = this.lowerCanvasEl, upperCanvasEl = this.upperCanvasEl; - // if there is no upperCanvas (most common case) we create one. - if (!upperCanvasEl) { - upperCanvasEl = this._createCanvasElement(); - this.upperCanvasEl = upperCanvasEl; - } - // we assign the same classname of the lowerCanvas - upperCanvasEl.className = lowerCanvasEl.className; - // but then we remove the lower-canvas specific className - upperCanvasEl.classList.remove('lower-canvas'); - // we add the specific upper-canvas class - upperCanvasEl.classList.add('upper-canvas'); - upperCanvasEl.setAttribute('data-fabric', 'top'); - this.wrapperEl.appendChild(upperCanvasEl); - this._copyCanvasStyle(lowerCanvasEl, upperCanvasEl); - this._applyCanvasStyle(upperCanvasEl); - upperCanvasEl.setAttribute('draggable', 'true'); - this.contextTop = upperCanvasEl.getContext('2d'); - }, - /** - * @private - */ - _createCacheCanvas: function () { - this.cacheCanvasEl = this._createCanvasElement(); - this.cacheCanvasEl.setAttribute('width', this.width); - this.cacheCanvasEl.setAttribute('height', this.height); - this.contextCache = this.cacheCanvasEl.getContext('2d'); - }, - /** - * @private - */ - _initWrapperElement: function () { - if (this.wrapperEl) { - return; - } - const container = fabric.document.createElement('div'); - container.classList.add(this.containerClass); - this.wrapperEl = fabric.util.wrapElement(this.lowerCanvasEl, container); - this.wrapperEl.setAttribute('data-fabric', 'wrapper'); - fabric.util.setStyle(this.wrapperEl, { - width: this.width + 'px', - height: this.height + 'px', - position: 'relative', - }); - fabric.util.makeElementUnselectable(this.wrapperEl); - }, - /** - * @private - * @param {HTMLElement} element canvas element to apply styles on - */ - _applyCanvasStyle: function (element) { - var width = this.width || element.width, height = this.height || element.height; - fabric.util.setStyle(element, { - position: 'absolute', - width: width + 'px', - height: height + 'px', - left: 0, - top: 0, - 'touch-action': this.allowTouchScrolling ? 'manipulation' : 'none', - '-ms-touch-action': this.allowTouchScrolling - ? 'manipulation' - : 'none', - }); - element.width = width; - element.height = height; - fabric.util.makeElementUnselectable(element); - }, - /** - * Copy the entire inline style from one element (fromEl) to another (toEl) - * @private - * @param {Element} fromEl Element style is copied from - * @param {Element} toEl Element copied style is applied to - */ - _copyCanvasStyle: function (fromEl, toEl) { - toEl.style.cssText = fromEl.style.cssText; - }, - /** - * Returns context of top canvas where interactions are drawn - * @returns {CanvasRenderingContext2D} - */ - getTopContext: function () { - return this.contextTop; - }, - /** - * Returns context of canvas where object selection is drawn - * @alias - * @return {CanvasRenderingContext2D} - */ - getSelectionContext: function () { - return this.contextTop; - }, - /** - * Returns <canvas> element on which object selection is drawn - * @return {HTMLCanvasElement} - */ - getSelectionElement: function () { - return this.upperCanvasEl; - }, - /** - * Returns currently active object - * @return {fabric.Object} active object - */ - getActiveObject: function () { - return this._activeObject; - }, - /** - * Returns an array with the current selected objects - * @return {fabric.Object} active object - */ - getActiveObjects: function () { - var active = this._activeObject; - if (active) { - if (active.type === 'activeSelection' && active._objects) { - return active._objects.slice(0); - } - else { - return [active]; - } - } - return []; - }, - /** - * @private - * Compares the old activeObject with the current one and fires correct events - * @param {fabric.Object} obj old activeObject - */ - _fireSelectionEvents: function (oldObjects, e) { - var somethingChanged = false, objects = this.getActiveObjects(), added = [], removed = [], invalidate = false; - oldObjects.forEach(function (oldObject) { - if (objects.indexOf(oldObject) === -1) { - somethingChanged = true; - oldObject.fire('deselected', { - e: e, - target: oldObject, - }); - removed.push(oldObject); - } - }); - objects.forEach(function (object) { - if (oldObjects.indexOf(object) === -1) { - somethingChanged = true; - object.fire('selected', { - e: e, - target: object, - }); - added.push(object); - } - }); - if (oldObjects.length > 0 && objects.length > 0) { - invalidate = true; - somethingChanged && - this.fire('selection:updated', { - e: e, - selected: added, - deselected: removed, - }); - } - else if (objects.length > 0) { - invalidate = true; - this.fire('selection:created', { - e: e, - selected: added, - }); - } - else if (oldObjects.length > 0) { - invalidate = true; - this.fire('selection:cleared', { - e: e, - deselected: removed, - }); - } - invalidate && (this._objectsToRender = undefined); - }, - /** - * Sets given object as the only active object on canvas - * @param {fabric.Object} object Object to set as an active one - * @param {Event} [e] Event (passed along when firing "object:selected") - * @return {fabric.Canvas} thisArg - * @chainable - */ - setActiveObject: function (object, e) { - var currentActives = this.getActiveObjects(); - this._setActiveObject(object, e); - this._fireSelectionEvents(currentActives, e); - return this; - }, - /** - * This is a private method for now. - * This is supposed to be equivalent to setActiveObject but without firing - * any event. There is commitment to have this stay this way. - * This is the functional part of setActiveObject. - * @private - * @param {Object} object to set as active - * @param {Event} [e] Event (passed along when firing "object:selected") - * @return {Boolean} true if the selection happened - */ - _setActiveObject: function (object, e) { - if (this._activeObject === object) { - return false; - } - if (!this._discardActiveObject(e, object)) { - return false; - } - if (object.onSelect({ e: e })) { - return false; - } - this._activeObject = object; - return true; - }, - /** - * This is a private method for now. - * This is supposed to be equivalent to discardActiveObject but without firing - * any selection events ( can still fire object transformation events ). There is commitment to have this stay this way. - * This is the functional part of discardActiveObject. - * @param {Event} [e] Event (passed along when firing "object:deselected") - * @param {Object} object to set as active - * @return {Boolean} true if the selection happened - * @private - */ - _discardActiveObject: function (e, object) { - var obj = this._activeObject; - if (obj) { - // onDeselect return TRUE to cancel selection; - if (obj.onDeselect({ e: e, object: object })) { - return false; - } - if (this._currentTransform && this._currentTransform.target === obj) { - this.endCurrentTransform(e); - } - this._activeObject = null; - } - return true; - }, - /** - * Discards currently active object and fire events. If the function is called by fabric - * as a consequence of a mouse event, the event is passed as a parameter and - * sent to the fire function for the custom events. When used as a method the - * e param does not have any application. - * @param {event} e - * @return {fabric.Canvas} thisArg - * @chainable - */ - discardActiveObject: function (e) { - var currentActives = this.getActiveObjects(), activeObject = this.getActiveObject(); - if (currentActives.length) { - this.fire('before:selection:cleared', { target: activeObject, e: e }); - } - this._discardActiveObject(e); - this._fireSelectionEvents(currentActives, e); - return this; - }, - /** - * Clears the canvas element, disposes objects, removes all event listeners and frees resources - * - * **CAUTION**: - * - * This method is **UNSAFE**. - * You may encounter a race condition using it if there's a requested render. - * Call this method only if you are sure rendering has settled. - * Consider using {@link dispose} as it is **SAFE** - * - * @private - */ - destroy: function () { - var wrapperEl = this.wrapperEl, lowerCanvasEl = this.lowerCanvasEl, upperCanvasEl = this.upperCanvasEl, cacheCanvasEl = this.cacheCanvasEl; - this.removeListeners(); - this.callSuper('destroy'); - wrapperEl.removeChild(upperCanvasEl); - wrapperEl.removeChild(lowerCanvasEl); - this.contextCache = null; - this.contextTop = null; - fabric.util.cleanUpJsdomNode(upperCanvasEl); - this.upperCanvasEl = undefined; - fabric.util.cleanUpJsdomNode(cacheCanvasEl); - this.cacheCanvasEl = undefined; - if (wrapperEl.parentNode) { - wrapperEl.parentNode.replaceChild(lowerCanvasEl, wrapperEl); - } - delete this.wrapperEl; - return this; - }, - /** - * Clears all contexts (background, main, top) of an instance - * @return {fabric.Canvas} thisArg - * @chainable - */ - clear: function () { - // this.discardActiveGroup(); - this.discardActiveObject(); - this.clearContext(this.contextTop); - return this.callSuper('clear'); - }, - /** - * Draws objects' controls (borders/controls) - * @param {CanvasRenderingContext2D} ctx Context to render controls on - */ - drawControls: function (ctx) { - var activeObject = this._activeObject; - if (activeObject) { - activeObject._renderControls(ctx); - } - }, - /** - * @private - */ - _toObject: function (instance, methodName, propertiesToInclude) { - //If the object is part of the current selection group, it should - //be transformed appropriately - //i.e. it should be serialised as it would appear if the selection group - //were to be destroyed. - var originalProperties = this._realizeGroupTransformOnObject(instance), object = this.callSuper('_toObject', instance, methodName, propertiesToInclude); - //Undo the damage we did by changing all of its properties - originalProperties && instance.set(originalProperties); - return object; - }, - /** - * Realises an object's group transformation on it - * @private - * @param {fabric.Object} [instance] the object to transform (gets mutated) - * @returns the original values of instance which were changed - */ - _realizeGroupTransformOnObject: function (instance) { - if (instance.group && - instance.group.type === 'activeSelection' && - this._activeObject === instance.group) { - var layoutProps = [ - 'angle', - 'flipX', - 'flipY', - 'left', - 'scaleX', - 'scaleY', - 'skewX', - 'skewY', - 'top', - ]; - //Copy all the positionally relevant properties across now - var originalValues = {}; - layoutProps.forEach(function (prop) { - originalValues[prop] = instance[prop]; - }); - fabric.util.addTransformToObject(instance, this._activeObject.calcOwnMatrix()); - return originalValues; - } - else { - return null; - } - }, - /** - * @private - */ - _setSVGObject: function (markup, instance, reviver) { - //If the object is in a selection group, simulate what would happen to that - //object when the group is deselected - var originalProperties = this._realizeGroupTransformOnObject(instance); - this.callSuper('_setSVGObject', markup, instance, reviver); - originalProperties && instance.set(originalProperties); - }, - setViewportTransform: function (vpt) { - if (this.renderOnAddRemove && - this._activeObject && - this._activeObject.isEditing) { - this._activeObject.clearContextTop(); - } - fabric.StaticCanvas.prototype.setViewportTransform.call(this, vpt); - }, - }); - // copying static properties manually to work around Opera's bug, - // where "prototype" property is enumerable and overrides existing prototype - for (var prop in fabric.StaticCanvas) { - if (prop !== 'prototype') { - fabric.Canvas[prop] = fabric.StaticCanvas[prop]; + _rgbToHsl: function(r, g, b) { + r /= 255; g /= 255; b /= 255; + + var h, s, l, + max = fabric.util.array.max([r, g, b]), + min = fabric.util.array.min([r, g, b]); + + l = (max + min) / 2; + + if (max === min) { + h = s = 0; // achromatic + } + else { + var d = max - min; + s = l > 0.5 ? d / (2 - max - min) : d / (max + min); + switch (max) { + case r: + h = (g - b) / d + (g < b ? 6 : 0); + break; + case g: + h = (b - r) / d + 2; + break; + case b: + h = (r - g) / d + 4; + break; } - } -})(typeof exports !== 'undefined' ? exports : window); + h /= 6; + } -const fireEvent = (eventName, options) => { - var _a; - const target = options.transform.target; - (_a = target.canvas) === null || _a === void 0 ? void 0 : _a.fire('object:' + eventName, Object.assign(Object.assign({}, options), { target })); - target.fire(eventName, options); -}; + return [ + Math.round(h * 360), + Math.round(s * 100), + Math.round(l * 100) + ]; + }, -//@ts-nocheck -(function (global) { - var fabric = global.fabric, addListener = fabric.util.addListener, removeListener = fabric.util.removeListener, RIGHT_CLICK = 3, MIDDLE_CLICK = 2, LEFT_CLICK = 1, addEventOptions = { passive: false }; - function checkClick(e, value) { - return e.button && e.button === value - 1; - } - fabric.util.object.extend(fabric.Canvas.prototype, - /** @lends fabric.Canvas.prototype */ { - /** - * Contains the id of the touch event that owns the fabric transform - * @type Number - * @private - */ - mainTouchId: null, - /** - * Adds mouse listeners to canvas - * @private - */ - _initEventListeners: function () { - // in case we initialized the class twice. This should not happen normally - // but in some kind of applications where the canvas element may be changed - // this is a workaround to having double listeners. - this.removeListeners(); - this._bindEvents(); - this.addOrRemove(addListener, 'add'); - }, - /** - * return an event prefix pointer or mouse. - * @private - */ - _getEventPrefix: function () { - return this.enablePointerEvents ? 'pointer' : 'mouse'; - }, - addOrRemove: function (functor, eventjsFunctor) { - var canvasElement = this.upperCanvasEl, eventTypePrefix = this._getEventPrefix(); - functor(fabric.window, 'resize', this._onResize); - functor(canvasElement, eventTypePrefix + 'down', this._onMouseDown); - functor(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - functor(canvasElement, eventTypePrefix + 'out', this._onMouseOut); - functor(canvasElement, eventTypePrefix + 'enter', this._onMouseEnter); - functor(canvasElement, 'wheel', this._onMouseWheel); - functor(canvasElement, 'contextmenu', this._onContextMenu); - functor(canvasElement, 'dblclick', this._onDoubleClick); - functor(canvasElement, 'dragstart', this._onDragStart); - functor(canvasElement, 'dragend', this._onDragEnd); - functor(canvasElement, 'dragover', this._onDragOver); - functor(canvasElement, 'dragenter', this._onDragEnter); - functor(canvasElement, 'dragleave', this._onDragLeave); - functor(canvasElement, 'drop', this._onDrop); - if (!this.enablePointerEvents) { - functor(canvasElement, 'touchstart', this._onTouchStart, addEventOptions); - } - if (typeof eventjs !== 'undefined' && eventjsFunctor in eventjs) { - eventjs[eventjsFunctor](canvasElement, 'gesture', this._onGesture); - eventjs[eventjsFunctor](canvasElement, 'drag', this._onDrag); - eventjs[eventjsFunctor](canvasElement, 'orientation', this._onOrientationChange); - eventjs[eventjsFunctor](canvasElement, 'shake', this._onShake); - eventjs[eventjsFunctor](canvasElement, 'longpress', this._onLongPress); - } - }, - /** - * Removes all event listeners - */ - removeListeners: function () { - this.addOrRemove(removeListener, 'remove'); - // if you dispose on a mouseDown, before mouse up, you need to clean document to... - var eventTypePrefix = this._getEventPrefix(); - removeListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); - removeListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); - removeListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - removeListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); - }, - /** - * @private - */ - _bindEvents: function () { - if (this.eventsBound) { - // for any reason we pass here twice we do not want to bind events twice. - return; - } - this._onMouseDown = this._onMouseDown.bind(this); - this._onTouchStart = this._onTouchStart.bind(this); - this._onMouseMove = this._onMouseMove.bind(this); - this._onMouseUp = this._onMouseUp.bind(this); - this._onTouchEnd = this._onTouchEnd.bind(this); - this._onResize = this._onResize.bind(this); - this._onGesture = this._onGesture.bind(this); - this._onDrag = this._onDrag.bind(this); - this._onShake = this._onShake.bind(this); - this._onLongPress = this._onLongPress.bind(this); - this._onOrientationChange = this._onOrientationChange.bind(this); - this._onMouseWheel = this._onMouseWheel.bind(this); - this._onMouseOut = this._onMouseOut.bind(this); - this._onMouseEnter = this._onMouseEnter.bind(this); - this._onContextMenu = this._onContextMenu.bind(this); - this._onDoubleClick = this._onDoubleClick.bind(this); - this._onDragStart = this._onDragStart.bind(this); - this._onDragEnd = this._onDragEnd.bind(this); - this._onDragProgress = this._onDragProgress.bind(this); - this._onDragOver = this._onDragOver.bind(this); - this._onDragEnter = this._onDragEnter.bind(this); - this._onDragLeave = this._onDragLeave.bind(this); - this._onDrop = this._onDrop.bind(this); - this.eventsBound = true; - }, - /** - * @private - * @param {Event} [e] Event object fired on Event.js gesture - * @param {Event} [self] Inner Event object - */ - _onGesture: function (e, self) { - this.__onTransformGesture && this.__onTransformGesture(e, self); - }, - /** - * @private - * @param {Event} [e] Event object fired on Event.js drag - * @param {Event} [self] Inner Event object - */ - _onDrag: function (e, self) { - this.__onDrag && this.__onDrag(e, self); - }, - /** - * @private - * @param {Event} [e] Event object fired on wheel event - */ - _onMouseWheel: function (e) { - this.__onMouseWheel(e); - }, - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onMouseOut: function (e) { - var target = this._hoveredTarget; - this.fire('mouse:out', { target: target, e: e }); - this._hoveredTarget = null; - target && target.fire('mouseout', { e: e }); - this._hoveredTargets.forEach(function (nestedTarget) { - this.fire('mouse:out', { target: nestedTarget, e: e }); - nestedTarget && nestedTarget.fire('mouseout', { e: e }); - }, this); - this._hoveredTargets = []; - }, - /** - * @private - * @param {Event} e Event object fired on mouseenter - */ - _onMouseEnter: function (e) { - // This find target and consequent 'mouse:over' is used to - // clear old instances on hovered target. - // calling findTarget has the side effect of killing target.__corner. - // as a short term fix we are not firing this if we are currently transforming. - // as a long term fix we need to separate the action of finding a target with the - // side effects we added to it. - if (!this._currentTransform && !this.findTarget(e)) { - this.fire('mouse:over', { target: null, e: e }); - this._hoveredTarget = null; - this._hoveredTargets = []; - } - }, - /** - * @private - * @param {Event} [e] Event object fired on Event.js orientation change - * @param {Event} [self] Inner Event object - */ - _onOrientationChange: function (e, self) { - this.__onOrientationChange && this.__onOrientationChange(e, self); - }, - /** - * @private - * @param {Event} [e] Event object fired on Event.js shake - * @param {Event} [self] Inner Event object - */ - _onShake: function (e, self) { - this.__onShake && this.__onShake(e, self); - }, - /** - * @private - * @param {Event} [e] Event object fired on Event.js shake - * @param {Event} [self] Inner Event object - */ - _onLongPress: function (e, self) { - this.__onLongPress && this.__onLongPress(e, self); - }, - /** - * supports native like text dragging - * @private - * @param {DragEvent} e - */ - _onDragStart: function (e) { - var activeObject = this.getActiveObject(); - if (activeObject && - typeof activeObject.onDragStart === 'function' && - activeObject.onDragStart(e)) { - this._dragSource = activeObject; - var options = { e: e, target: activeObject }; - this.fire('dragstart', options); - activeObject.fire('dragstart', options); - addListener(this.upperCanvasEl, 'drag', this._onDragProgress); - return; - } - e.preventDefault(); - e.stopPropagation(); - }, - /** - * @private - */ - _renderDragEffects: function (e, source, target) { - var ctx = this.contextTop; - if (source) { - source.clearContextTop(true); - source.renderDragSourceEffect(e); - } - if (target) { - if (target !== source) { - ctx.restore(); - ctx.save(); - target.clearContextTop(true); - } - target.renderDropTargetEffect(e); - } - ctx.restore(); - }, - /** - * supports native like text dragging - * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#finishing_a_drag - * @private - * @param {DragEvent} e - */ - _onDragEnd: function (e) { - var didDrop = e.dataTransfer.dropEffect !== 'none', dropTarget = didDrop ? this._activeObject : undefined, options = { - e: e, - target: this._dragSource, - subTargets: this.targets, - dragSource: this._dragSource, - didDrop: didDrop, - dropTarget: dropTarget, - }; - removeListener(this.upperCanvasEl, 'drag', this._onDragProgress); - this.fire('dragend', options); - this._dragSource && this._dragSource.fire('dragend', options); - delete this._dragSource; - // we need to call mouse up synthetically because the browser won't - this._onMouseUp(e); - }, - /** - * fire `drag` event on canvas and drag source - * @private - * @param {DragEvent} e - */ - _onDragProgress: function (e) { - var options = { - e: e, - dragSource: this._dragSource, - dropTarget: this._draggedoverTarget, - }; - this.fire('drag', options); - this._dragSource && this._dragSource.fire('drag', options); - }, - /** - * prevent default to allow drop event to be fired - * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#specifying_drop_targets - * @private - * @param {Event} [e] Event object fired on Event.js shake - */ - _onDragOver: function (e) { - var eventType = 'dragover', target = this.findTarget(e), targets = this.targets, options = { - e: e, - target: target, - subTargets: targets, - dragSource: this._dragSource, - canDrop: false, - dropTarget: undefined, - }, dropTarget; - // fire on canvas - this.fire(eventType, options); - // make sure we fire dragenter events before dragover - // if dragleave is needed, object will not fire dragover so we don't need to trouble ourselves with it - this._fireEnterLeaveEvents(target, options); - if (target) { - // render drag selection before rendering target cursor for correct visuals - if (target.canDrop(e)) { - dropTarget = target; - } - target.fire(eventType, options); - } - // propagate the event to subtargets - for (var i = 0; i < targets.length; i++) { - target = targets[i]; - // accept event only if previous targets didn't - if (!e.defaultPrevented && target.canDrop(e)) { - dropTarget = target; - } - target.fire(eventType, options); - } - // render drag effects now that relations between source and target is clear - this._renderDragEffects(e, this._dragSource, dropTarget); - }, - /** - * fire `dragleave` on `dragover` targets - * @private - * @param {Event} [e] Event object fired on Event.js shake - */ - _onDragEnter: function (e) { - var target = this.findTarget(e); - var options = { - e: e, - target: target, - subTargets: this.targets, - dragSource: this._dragSource, - }; - this.fire('dragenter', options); - // fire dragenter on targets - this._fireEnterLeaveEvents(target, options); - }, - /** - * fire `dragleave` on `dragover` targets - * @private - * @param {Event} [e] Event object fired on Event.js shake - */ - _onDragLeave: function (e) { - var options = { - e: e, - target: this._draggedoverTarget, - subTargets: this.targets, - dragSource: this._dragSource, - }; - this.fire('dragleave', options); - // fire dragleave on targets - this._fireEnterLeaveEvents(null, options); - // clear targets - this.targets = []; - this._hoveredTargets = []; - }, - /** - * `drop:before` is a an event that allows you to schedule logic - * before the `drop` event. Prefer `drop` event always, but if you need - * to run some drop-disabling logic on an event, since there is no way - * to handle event handlers ordering, use `drop:before` - * @private - * @param {Event} e - */ - _onDrop: function (e) { - var options = this._simpleEventHandler('drop:before', e, { - dragSource: this._dragSource, - pointer: this.getPointer(e), - }); - // will be set by the drop target - options.didDrop = false; - // will be set by the drop target, used in case options.target refuses the drop - options.dropTarget = undefined; - // fire `drop` - this._basicEventHandler('drop', options); - // inform canvas of the drop - // we do this because canvas was unaware of what happened at the time the `drop` event was fired on it - // use for side effects - this.fire('drop:after', options); - }, - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onContextMenu: function (e) { - var options = this._simpleEventHandler('contextmenu:before', e); - if (this.stopContextMenu) { - e.stopPropagation(); - e.preventDefault(); - } - this._basicEventHandler('contextmenu', options); - return false; - }, - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onDoubleClick: function (e) { - this._cacheTransformEventData(e); - this._handleEvent(e, 'dblclick'); - this._resetTransformEventData(); - }, - /** - * Return a the id of an event. - * returns either the pointerId or the identifier or 0 for the mouse event - * @private - * @param {Event} evt Event object - */ - getPointerId: function (evt) { - var changedTouches = evt.changedTouches; - if (changedTouches) { - return changedTouches[0] && changedTouches[0].identifier; - } - if (this.enablePointerEvents) { - return evt.pointerId; - } - return -1; - }, - /** - * Determines if an event has the id of the event that is considered main - * @private - * @param {evt} event Event object - */ - _isMainEvent: function (evt) { - if (evt.isPrimary === true) { - return true; - } - if (evt.isPrimary === false) { - return false; - } - if (evt.type === 'touchend' && evt.touches.length === 0) { - return true; - } - if (evt.changedTouches) { - return evt.changedTouches[0].identifier === this.mainTouchId; - } - return true; - }, - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onTouchStart: function (e) { - e.preventDefault(); - if (this.mainTouchId === null) { - this.mainTouchId = this.getPointerId(e); - } - this.__onMouseDown(e); - this._resetTransformEventData(); - var canvasElement = this.upperCanvasEl, eventTypePrefix = this._getEventPrefix(); - addListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); - addListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); - // Unbind mousedown to prevent double triggers from touch devices - removeListener(canvasElement, eventTypePrefix + 'down', this._onMouseDown); - }, - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onMouseDown: function (e) { - this.__onMouseDown(e); - this._resetTransformEventData(); - var canvasElement = this.upperCanvasEl, eventTypePrefix = this._getEventPrefix(); - removeListener(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - addListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); - addListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - }, - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onTouchEnd: function (e) { - if (e.touches.length > 0) { - // if there are still touches stop here - return; - } - this.__onMouseUp(e); - this._resetTransformEventData(); - this.mainTouchId = null; - var eventTypePrefix = this._getEventPrefix(); - removeListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); - removeListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); - var _this = this; - if (this._willAddMouseDown) { - clearTimeout(this._willAddMouseDown); - } - this._willAddMouseDown = setTimeout(function () { - // Wait 400ms before rebinding mousedown to prevent double triggers - // from touch devices - addListener(_this.upperCanvasEl, eventTypePrefix + 'down', _this._onMouseDown); - _this._willAddMouseDown = 0; - }, 400); - }, - /** - * @private - * @param {Event} e Event object fired on mouseup - */ - _onMouseUp: function (e) { - this.__onMouseUp(e); - this._resetTransformEventData(); - var canvasElement = this.upperCanvasEl, eventTypePrefix = this._getEventPrefix(); - if (this._isMainEvent(e)) { - removeListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); - removeListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - addListener(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); - } - }, - /** - * @private - * @param {Event} e Event object fired on mousemove - */ - _onMouseMove: function (e) { - var activeObject = this.getActiveObject(); - !this.allowTouchScrolling && - (!activeObject || !activeObject.__isDragging) && - e.preventDefault && - e.preventDefault(); - this.__onMouseMove(e); - }, - /** - * @private - */ - _onResize: function () { - this.calcOffset(); - this._resetTransformEventData(); - }, - /** - * Decides whether the canvas should be redrawn in mouseup and mousedown events. - * @private - * @param {Object} target - */ - _shouldRender: function (target) { - var activeObject = this._activeObject; - if (!!activeObject !== !!target || - (activeObject && target && activeObject !== target)) { - // this covers: switch of target, from target to no target, selection of target - // multiSelection with key and mouse - return true; - } - else if (activeObject && activeObject.isEditing) { - // if we mouse up/down over a editing textbox a cursor change, - // there is no need to re render - return false; - } - return false; - }, - /** - * Method that defines the actions when mouse is released on canvas. - * The method resets the currentTransform parameters, store the image corner - * position in the image object and render the canvas on top. - * @private - * @param {Event} e Event object fired on mouseup - */ - __onMouseUp: function (e) { - var target, transform = this._currentTransform, groupSelector = this._groupSelector, shouldRender = false, isClick = !groupSelector || - (groupSelector.left === 0 && groupSelector.top === 0); - this._cacheTransformEventData(e); - target = this._target; - this._handleEvent(e, 'up:before'); - // if right/middle click just fire events and return - // target undefined will make the _handleEvent search the target - if (checkClick(e, RIGHT_CLICK)) { - if (this.fireRightClick) { - this._handleEvent(e, 'up', RIGHT_CLICK, isClick); - } - return; - } - if (checkClick(e, MIDDLE_CLICK)) { - if (this.fireMiddleClick) { - this._handleEvent(e, 'up', MIDDLE_CLICK, isClick); - } - this._resetTransformEventData(); - return; - } - if (this.isDrawingMode && this._isCurrentlyDrawing) { - this._onMouseUpInDrawingMode(e); - return; - } - if (!this._isMainEvent(e)) { - return; - } - if (transform) { - this._finalizeCurrentTransform(e); - shouldRender = transform.actionPerformed; - } - if (!isClick) { - var targetWasActive = target === this._activeObject; - this._maybeGroupObjects(e); - if (!shouldRender) { - shouldRender = - this._shouldRender(target) || - (!targetWasActive && target === this._activeObject); - } - } - var corner, pointer; - if (target) { - corner = target._findTargetCorner(this.getPointer(e, true), fabric.util.isTouchEvent(e)); - if (target.selectable && - target !== this._activeObject && - target.activeOn === 'up') { - this.setActiveObject(target, e); - shouldRender = true; - } - else { - var control = target.controls[corner], mouseUpHandler = control && control.getMouseUpHandler(e, target, control); - if (mouseUpHandler) { - pointer = this.getPointer(e); - mouseUpHandler(e, transform, pointer.x, pointer.y); - } - } - target.isMoving = false; - } - // if we are ending up a transform on a different control or a new object - // fire the original mouse up from the corner that started the transform - if (transform && - (transform.target !== target || transform.corner !== corner)) { - var originalControl = transform.target && transform.target.controls[transform.corner], originalMouseUpHandler = originalControl && - originalControl.getMouseUpHandler(e, target, control); - pointer = pointer || this.getPointer(e); - originalMouseUpHandler && - originalMouseUpHandler(e, transform, pointer.x, pointer.y); - } - this._setCursorFromEvent(e, target); - this._handleEvent(e, 'up', LEFT_CLICK, isClick); - this._groupSelector = null; - this._currentTransform = null; - // reset the target information about which corner is selected - target && (target.__corner = 0); - if (shouldRender) { - this.requestRenderAll(); - } - else if (!isClick) { - this.renderTop(); - } - }, - /** - * @private - * Handle event firing for target and subtargets - * @param {Event} e event from mouse - * @param {String} eventType event to fire (up, down or move) - * @param {object} [data] event data overrides - * @return {object} options - */ - _simpleEventHandler: function (eventType, e, data) { - var target = this.findTarget(e), subTargets = this.targets || []; - return this._basicEventHandler(eventType, Object.assign({}, { - e: e, - target: target, - subTargets: subTargets, - }, data)); - }, - _basicEventHandler: function (eventType, options) { - var target = options.target, subTargets = options.subTargets; - this.fire(eventType, options); - target && target.fire(eventType, options); - for (var i = 0; i < subTargets.length; i++) { - subTargets[i].fire(eventType, options); - } - return options; - }, - /** - * @private - * Handle event firing for target and subtargets - * @param {Event} e event from mouse - * @param {String} eventType event to fire (up, down or move) - * @param {fabric.Object} targetObj receiving event - * @param {Number} [button] button used in the event 1 = left, 2 = middle, 3 = right - * @param {Boolean} isClick for left button only, indicates that the mouse up happened without move. - */ - _handleEvent: function (e, eventType, button, isClick) { - var target = this._target, targets = this.targets || [], options = { - e: e, - target: target, - subTargets: targets, - button: button || LEFT_CLICK, - isClick: isClick || false, - pointer: this._pointer, - absolutePointer: this._absolutePointer, - transform: this._currentTransform, - }; - if (eventType === 'up') { - options.currentTarget = this.findTarget(e); - options.currentSubTargets = this.targets; - } - this.fire('mouse:' + eventType, options); - target && target.fire('mouse' + eventType, options); - for (var i = 0; i < targets.length; i++) { - targets[i].fire('mouse' + eventType, options); - } - }, - /** - * End the current transfrom. - * You don't usually need to call this method unless you are interupting a user initiated transform - * because of some other event ( a press of key combination, or something that block the user UX ) - * @param {Event} [e] send the mouse event that generate the finalize down, so it can be used in the event - */ - endCurrentTransform: function (e) { - var transform = this._currentTransform; - this._finalizeCurrentTransform(e); - if (transform && transform.target) { - // this could probably go inside _finalizeCurrentTransform - transform.target.isMoving = false; - } - this._currentTransform = null; - }, - /** - * @private - * @param {Event} e send the mouse event that generate the finalize down, so it can be used in the event - */ - _finalizeCurrentTransform: function (e) { - var transform = this._currentTransform, target = transform.target, options = { - e: e, - target: target, - transform: transform, - action: transform.action, - }; - if (target._scaling) { - target._scaling = false; - } - target.setCoords(); - if (transform.actionPerformed || - (this.stateful && target.hasStateChanged())) { - this._fire('modified', options); - } - }, - /** - * @private - * @param {Event} e Event object fired on mousedown - */ - _onMouseDownInDrawingMode: function (e) { - this._isCurrentlyDrawing = true; - if (this.getActiveObject()) { - this.discardActiveObject(e).requestRenderAll(); - } - var pointer = this.getPointer(e); - this.freeDrawingBrush.onMouseDown(pointer, { e: e, pointer: pointer }); - this._handleEvent(e, 'down'); - }, - /** - * @private - * @param {Event} e Event object fired on mousemove - */ - _onMouseMoveInDrawingMode: function (e) { - if (this._isCurrentlyDrawing) { - var pointer = this.getPointer(e); - this.freeDrawingBrush.onMouseMove(pointer, { - e: e, - pointer: pointer, - }); - } - this.setCursor(this.freeDrawingCursor); - this._handleEvent(e, 'move'); - }, - /** - * @private - * @param {Event} e Event object fired on mouseup - */ - _onMouseUpInDrawingMode: function (e) { - var pointer = this.getPointer(e); - this._isCurrentlyDrawing = this.freeDrawingBrush.onMouseUp({ - e: e, - pointer: pointer, - }); - this._handleEvent(e, 'up'); - }, - /** - * Method that defines the actions when mouse is clicked on canvas. - * The method inits the currentTransform parameters and renders all the - * canvas so the current image can be placed on the top canvas and the rest - * in on the container one. - * @private - * @param {Event} e Event object fired on mousedown - */ - __onMouseDown: function (e) { - this._cacheTransformEventData(e); - this._handleEvent(e, 'down:before'); - var target = this._target; - // if right click just fire events - if (checkClick(e, RIGHT_CLICK)) { - if (this.fireRightClick) { - this._handleEvent(e, 'down', RIGHT_CLICK); - } - return; - } - if (checkClick(e, MIDDLE_CLICK)) { - if (this.fireMiddleClick) { - this._handleEvent(e, 'down', MIDDLE_CLICK); - } - return; - } - if (this.isDrawingMode) { - this._onMouseDownInDrawingMode(e); - return; - } - if (!this._isMainEvent(e)) { - return; - } - // ignore if some object is being transformed at this moment - if (this._currentTransform) { - return; - } - var pointer = this._pointer; - // save pointer for check in __onMouseUp event - this._previousPointer = pointer; - var shouldRender = this._shouldRender(target), shouldGroup = this._shouldGroup(e, target); - if (this._shouldClearSelection(e, target)) { - this.discardActiveObject(e); - } - else if (shouldGroup) { - this._handleGrouping(e, target); - target = this._activeObject; - } - if (this.selection && - (!target || - (!target.selectable && - !target.isEditing && - target !== this._activeObject))) { - this._groupSelector = { - ex: this._absolutePointer.x, - ey: this._absolutePointer.y, - top: 0, - left: 0, - }; - } - if (target) { - var alreadySelected = target === this._activeObject; - if (target.selectable && target.activeOn === 'down') { - this.setActiveObject(target, e); - } - var corner = target._findTargetCorner(this.getPointer(e, true), fabric.util.isTouchEvent(e)); - target.__corner = corner; - if (target === this._activeObject && (corner || !shouldGroup)) { - this._setupCurrentTransform(e, target, alreadySelected); - var control = target.controls[corner], pointer = this.getPointer(e), mouseDownHandler = control && control.getMouseDownHandler(e, target, control); - if (mouseDownHandler) { - mouseDownHandler(e, this._currentTransform, pointer.x, pointer.y); - } - } - } - var invalidate = shouldRender || shouldGroup; - // we clear `_objectsToRender` in case of a change in order to repopulate it at rendering - // run before firing the `down` event to give the dev a chance to populate it themselves - invalidate && (this._objectsToRender = undefined); - this._handleEvent(e, 'down'); - // we must renderAll so that we update the visuals - invalidate && this.requestRenderAll(); - }, - /** - * reset cache form common information needed during event processing - * @private - */ - _resetTransformEventData: function () { - this._target = null; - this._pointer = null; - this._absolutePointer = null; - }, - /** - * Cache common information needed during event processing - * @private - * @param {Event} e Event object fired on event - */ - _cacheTransformEventData: function (e) { - // reset in order to avoid stale caching - this._resetTransformEventData(); - this._pointer = this.getPointer(e, true); - this._absolutePointer = this.restorePointerVpt(this._pointer); - this._target = this._currentTransform - ? this._currentTransform.target - : this.findTarget(e) || null; - }, - /** - * @private - */ - _beforeTransform: function (e) { - var t = this._currentTransform; - this.stateful && t.target.saveState(); - this.fire('before:transform', { - e: e, - transform: t, - }); - }, - /** - * Method that defines the actions when mouse is hovering the canvas. - * The currentTransform parameter will define whether the user is rotating/scaling/translating - * an image or neither of them (only hovering). A group selection is also possible and would cancel - * all any other type of action. - * In case of an image transformation only the top canvas will be rendered. - * @private - * @param {Event} e Event object fired on mousemove - */ - __onMouseMove: function (e) { - this._handleEvent(e, 'move:before'); - this._cacheTransformEventData(e); - var target, pointer; - if (this.isDrawingMode) { - this._onMouseMoveInDrawingMode(e); - return; - } - if (!this._isMainEvent(e)) { - return; - } - var groupSelector = this._groupSelector; - // We initially clicked in an empty area, so we draw a box for multiple selection - if (groupSelector) { - pointer = this._absolutePointer; - groupSelector.left = pointer.x - groupSelector.ex; - groupSelector.top = pointer.y - groupSelector.ey; - this.renderTop(); - } - else if (!this._currentTransform) { - target = this.findTarget(e) || null; - this._setCursorFromEvent(e, target); - this._fireOverOutEvents(target, e); - } - else { - this._transformObject(e); - } - this._handleEvent(e, 'move'); - this._resetTransformEventData(); - }, - /** - * Manage the mouseout, mouseover events for the fabric object on the canvas - * @param {Fabric.Object} target the target where the target from the mousemove event - * @param {Event} e Event object fired on mousemove - * @private - */ - _fireOverOutEvents: function (target, e) { - var _hoveredTarget = this._hoveredTarget, _hoveredTargets = this._hoveredTargets, targets = this.targets, length = Math.max(_hoveredTargets.length, targets.length); - this.fireSyntheticInOutEvents(target, { e: e }, { - oldTarget: _hoveredTarget, - evtOut: 'mouseout', - canvasEvtOut: 'mouse:out', - evtIn: 'mouseover', - canvasEvtIn: 'mouse:over', - }); - for (var i = 0; i < length; i++) { - this.fireSyntheticInOutEvents(targets[i], { e: e }, { - oldTarget: _hoveredTargets[i], - evtOut: 'mouseout', - evtIn: 'mouseover', - }); - } - this._hoveredTarget = target; - this._hoveredTargets = this.targets.concat(); - }, - /** - * Manage the dragEnter, dragLeave events for the fabric objects on the canvas - * @param {Fabric.Object} target the target where the target from the onDrag event - * @param {Object} data Event object fired on dragover - * @private - */ - _fireEnterLeaveEvents: function (target, data) { - var _draggedoverTarget = this._draggedoverTarget, _hoveredTargets = this._hoveredTargets, targets = this.targets, length = Math.max(_hoveredTargets.length, targets.length); - this.fireSyntheticInOutEvents(target, data, { - oldTarget: _draggedoverTarget, - evtOut: 'dragleave', - evtIn: 'dragenter', - canvasEvtIn: 'drag:enter', - canvasEvtOut: 'drag:leave', - }); - for (var i = 0; i < length; i++) { - this.fireSyntheticInOutEvents(targets[i], data, { - oldTarget: _hoveredTargets[i], - evtOut: 'dragleave', - evtIn: 'dragenter', - }); - } - this._draggedoverTarget = target; - }, - /** - * Manage the synthetic in/out events for the fabric objects on the canvas - * @param {Fabric.Object} target the target where the target from the supported events - * @param {Object} data Event object fired - * @param {Object} config configuration for the function to work - * @param {String} config.targetName property on the canvas where the old target is stored - * @param {String} [config.canvasEvtOut] name of the event to fire at canvas level for out - * @param {String} config.evtOut name of the event to fire for out - * @param {String} [config.canvasEvtIn] name of the event to fire at canvas level for in - * @param {String} config.evtIn name of the event to fire for in - * @private - */ - fireSyntheticInOutEvents: function (target, data, config) { - var inOpt, outOpt, oldTarget = config.oldTarget, outFires, inFires, targetChanged = oldTarget !== target, canvasEvtIn = config.canvasEvtIn, canvasEvtOut = config.canvasEvtOut; - if (targetChanged) { - inOpt = Object.assign({}, data, { - target: target, - previousTarget: oldTarget, - }); - outOpt = Object.assign({}, data, { - target: oldTarget, - nextTarget: target, - }); - } - inFires = target && targetChanged; - outFires = oldTarget && targetChanged; - if (outFires) { - canvasEvtOut && this.fire(canvasEvtOut, outOpt); - oldTarget.fire(config.evtOut, outOpt); - } - if (inFires) { - canvasEvtIn && this.fire(canvasEvtIn, inOpt); - target.fire(config.evtIn, inOpt); - } - }, - /** - * Method that defines actions when an Event Mouse Wheel - * @param {Event} e Event object fired on mouseup - */ - __onMouseWheel: function (e) { - this._cacheTransformEventData(e); - this._handleEvent(e, 'wheel'); - this._resetTransformEventData(); - }, - /** - * @private - * @param {Event} e Event fired on mousemove - */ - _transformObject: function (e) { - var pointer = this.getPointer(e), transform = this._currentTransform, target = transform.target, - // transform pointer to target's containing coordinate plane - // both pointer and object should agree on every point - localPointer = target.group - ? fabric.util.sendPointToPlane(pointer, undefined, target.group.calcTransformMatrix()) - : pointer; - transform.reset = false; - transform.shiftKey = e.shiftKey; - transform.altKey = e[this.centeredKey]; - this._performTransformAction(e, transform, localPointer); - transform.actionPerformed && this.requestRenderAll(); - }, - /** - * @private - */ - _performTransformAction: function (e, transform, pointer) { - var x = pointer.x, y = pointer.y, action = transform.action, actionPerformed = false, actionHandler = transform.actionHandler; - // this object could be created from the function in the control handlers - if (actionHandler) { - actionPerformed = actionHandler(e, transform, x, y); - } - if (action === 'drag' && actionPerformed) { - transform.target.isMoving = true; - this.setCursor(transform.target.moveCursor || this.moveCursor); - } - transform.actionPerformed = - transform.actionPerformed || actionPerformed; - }, - /** - * @private - */ - _fire: function (eventName, options) { - return fireEvent(eventName, options); - }, - /** - * Sets the cursor depending on where the canvas is being hovered. - * Note: very buggy in Opera - * @param {Event} e Event object - * @param {Object} target Object that the mouse is hovering, if so. - */ - _setCursorFromEvent: function (e, target) { - if (!target) { - this.setCursor(this.defaultCursor); - return false; - } - var hoverCursor = target.hoverCursor || this.hoverCursor, activeSelection = this._activeObject && this._activeObject.type === 'activeSelection' - ? this._activeObject - : null, - // only show proper corner when group selection is not active - corner = (!activeSelection || !activeSelection.contains(target)) && - // here we call findTargetCorner always with undefined for the touch parameter. - // we assume that if you are using a cursor you do not need to interact with - // the bigger touch area. - target._findTargetCorner(this.getPointer(e, true)); - if (!corner) { - if (target.subTargetCheck) { - // hoverCursor should come from top-most subTarget, - // so we walk the array backwards - this.targets - .concat() - .reverse() - .map(function (_target) { - hoverCursor = _target.hoverCursor || hoverCursor; - }); - } - this.setCursor(hoverCursor); - } - else { - this.setCursor(this.getCornerCursor(corner, target, e)); - } - }, - /** - * @private - */ - getCornerCursor: function (corner, target, e) { - var control = target.controls[corner]; - return control.cursorStyleHandler(e, control, target); - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric, min = Math.min, max = Math.max; - fabric.util.object.extend(fabric.Canvas.prototype, - /** @lends fabric.Canvas.prototype */ { - /** - * @private - * @param {Event} e Event object - * @param {fabric.Object} target - * @return {Boolean} - */ - _shouldGroup: function (e, target) { - var activeObject = this._activeObject; - // check if an active object exists on canvas and if the user is pressing the `selectionKey` while canvas supports multi selection. - return (!!activeObject && - this._isSelectionKeyPressed(e) && - this.selection && - // on top of that the user also has to hit a target that is selectable. - !!target && - target.selectable && - // if all pre-requisite pass, the target is either something different from the current - // activeObject or if an activeSelection already exists - // TODO at time of writing why `activeObject.type === 'activeSelection'` matter is unclear. - // is a very old condition uncertain if still valid. - (activeObject !== target || - activeObject.type === 'activeSelection') && - // make sure `activeObject` and `target` aren't ancestors of each other - !target.isDescendantOf(activeObject) && - !activeObject.isDescendantOf(target) && - // target accepts selection - !target.onSelect({ e: e })); - }, - /** - * @private - * @param {Event} e Event object - * @param {fabric.Object} target - */ - _handleGrouping: function (e, target) { - var activeObject = this._activeObject; - // avoid multi select when shift click on a corner - if (activeObject.__corner) { - return; - } - if (target === activeObject) { - // if it's a group, find target again, using activeGroup objects - target = this.findTarget(e, true); - // if even object is not found or we are on activeObjectCorner, bail out - if (!target || !target.selectable) { - return; - } - } - if (activeObject && activeObject.type === 'activeSelection') { - this._updateActiveSelection(target, e); - } - else { - this._createActiveSelection(target, e); - } - }, - /** - * @private - */ - _updateActiveSelection: function (target, e) { - var activeSelection = this._activeObject, currentActiveObjects = activeSelection._objects.slice(0); - if (target.group === activeSelection) { - activeSelection.remove(target); - this._hoveredTarget = target; - this._hoveredTargets = this.targets.concat(); - if (activeSelection.size() === 1) { - // activate last remaining object - this._setActiveObject(activeSelection.item(0), e); - } - } - else { - activeSelection.add(target); - this._hoveredTarget = activeSelection; - this._hoveredTargets = this.targets.concat(); - } - this._fireSelectionEvents(currentActiveObjects, e); - }, - /** - * @private - */ - _createActiveSelection: function (target, e) { - var currentActives = this.getActiveObjects(), group = this._createGroup(target); - this._hoveredTarget = group; - // ISSUE 4115: should we consider subTargets here? - // this._hoveredTargets = []; - // this._hoveredTargets = this.targets.concat(); - this._setActiveObject(group, e); - this._fireSelectionEvents(currentActives, e); - }, - /** - * @private - * @param {Object} target - * @returns {fabric.ActiveSelection} - */ - _createGroup: function (target) { - var activeObject = this._activeObject; - var groupObjects = target.isInFrontOf(activeObject) - ? [activeObject, target] - : [target, activeObject]; - activeObject.isEditing && activeObject.exitEditing(); - // handle case: target is nested - return new fabric.ActiveSelection(groupObjects, { - canvas: this, - }); - }, - /** - * @private - * @param {Event} e mouse event - */ - _groupSelectedObjects: function (e) { - var group = this._collectObjects(e), aGroup; - // do not create group for 1 element only - if (group.length === 1) { - this.setActiveObject(group[0], e); - } - else if (group.length > 1) { - aGroup = new fabric.ActiveSelection(group.reverse(), { - canvas: this, - }); - this.setActiveObject(aGroup, e); - } - }, - /** - * @private - */ - _collectObjects: function (e) { - var group = [], currentObject, x1 = this._groupSelector.ex, y1 = this._groupSelector.ey, x2 = x1 + this._groupSelector.left, y2 = y1 + this._groupSelector.top, selectionX1Y1 = new Point(min(x1, x2), min(y1, y2)), selectionX2Y2 = new Point(max(x1, x2), max(y1, y2)), allowIntersect = !this.selectionFullyContained, isClick = x1 === x2 && y1 === y2; - // we iterate reverse order to collect top first in case of click. - for (var i = this._objects.length; i--;) { - currentObject = this._objects[i]; - if (!currentObject || - !currentObject.selectable || - !currentObject.visible) { - continue; - } - if ((allowIntersect && - currentObject.intersectsWithRect(selectionX1Y1, selectionX2Y2, true)) || - currentObject.isContainedWithinRect(selectionX1Y1, selectionX2Y2, true) || - (allowIntersect && - currentObject.containsPoint(selectionX1Y1, null, true)) || - (allowIntersect && - currentObject.containsPoint(selectionX2Y2, null, true))) { - group.push(currentObject); - // only add one object if it's a click - if (isClick) { - break; - } - } - } - if (group.length > 1) { - group = group.filter(function (object) { - return !object.onSelect({ e: e }); - }); - } - return group; - }, - /** - * @private - */ - _maybeGroupObjects: function (e) { - if (this.selection && this._groupSelector) { - this._groupSelectedObjects(e); - } - this.setCursor(this.defaultCursor); - // clear selection and current transformation - this._groupSelector = null; - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.StaticCanvas.prototype, - /** @lends fabric.StaticCanvas.prototype */ { - /** - * Exports canvas element to a dataurl image. Note that when multiplier is used, cropping is scaled appropriately - * @param {Object} [options] Options object - * @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png" - * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg. - * @param {Number} [options.multiplier=1] Multiplier to scale by, to have consistent - * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 - * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 - * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 - * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 - * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 2.0.0 - * @param {(object: fabric.Object) => boolean} [options.filter] Function to filter objects. - * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format - * @see {@link https://jsfiddle.net/xsjua1rd/ demo} - * @example Generate jpeg dataURL with lower quality - * var dataURL = canvas.toDataURL({ - * format: 'jpeg', - * quality: 0.8 - * }); - * @example Generate cropped png dataURL (clipping of canvas) - * var dataURL = canvas.toDataURL({ - * format: 'png', - * left: 100, - * top: 100, - * width: 200, - * height: 200 - * }); - * @example Generate double scaled png dataURL - * var dataURL = canvas.toDataURL({ - * format: 'png', - * multiplier: 2 - * }); - * @example Generate dataURL with objects that overlap a specified object - * var myObject; - * var dataURL = canvas.toDataURL({ - * filter: (object) => object.isContainedWithinObject(myObject) || object.intersectsWithObject(myObject) - * }); - */ - toDataURL: function (options) { - options || (options = {}); - var format = options.format || 'png', quality = options.quality || 1, multiplier = (options.multiplier || 1) * - (options.enableRetinaScaling ? this.getRetinaScaling() : 1), canvasEl = this.toCanvasElement(multiplier, options); - return fabric.util.toDataURL(canvasEl, format, quality); - }, - /** - * Create a new HTMLCanvas element painted with the current canvas content. - * No need to resize the actual one or repaint it. - * Will transfer object ownership to a new canvas, paint it, and set everything back. - * This is an intermediary step used to get to a dataUrl but also it is useful to - * create quick image copies of a canvas without passing for the dataUrl string - * @param {Number} [multiplier] a zoom factor. - * @param {Object} [options] Cropping informations - * @param {Number} [options.left] Cropping left offset. - * @param {Number} [options.top] Cropping top offset. - * @param {Number} [options.width] Cropping width. - * @param {Number} [options.height] Cropping height. - * @param {(object: fabric.Object) => boolean} [options.filter] Function to filter objects. - */ - toCanvasElement: function (multiplier, options) { - multiplier = multiplier || 1; - options = options || {}; - var scaledWidth = (options.width || this.width) * multiplier, scaledHeight = (options.height || this.height) * multiplier, zoom = this.getZoom(), originalWidth = this.width, originalHeight = this.height, newZoom = zoom * multiplier, vp = this.viewportTransform, translateX = (vp[4] - (options.left || 0)) * multiplier, translateY = (vp[5] - (options.top || 0)) * multiplier, originalInteractive = this.interactive, newVp = [newZoom, 0, 0, newZoom, translateX, translateY], originalRetina = this.enableRetinaScaling, canvasEl = fabric.util.createCanvasElement(), originalContextTop = this.contextTop, objectsToRender = options.filter - ? this._objects.filter(options.filter) - : this._objects; - canvasEl.width = scaledWidth; - canvasEl.height = scaledHeight; - this.contextTop = null; - this.enableRetinaScaling = false; - this.interactive = false; - this.viewportTransform = newVp; - this.width = scaledWidth; - this.height = scaledHeight; - this.calcViewportBoundaries(); - this.renderCanvas(canvasEl.getContext('2d'), objectsToRender); - this.viewportTransform = vp; - this.width = originalWidth; - this.height = originalHeight; - this.calcViewportBoundaries(); - this.interactive = originalInteractive; - this.enableRetinaScaling = originalRetina; - this.contextTop = originalContextTop; - return canvasEl; - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.StaticCanvas.prototype, - /** @lends fabric.StaticCanvas.prototype */ { - /** - * Populates canvas with data from the specified JSON. - * JSON format must conform to the one of {@link fabric.Canvas#toJSON} - * - * **IMPORTANT**: It is recommended to abort loading tasks before calling this method to prevent race conditions and unnecessary networking - * - * @param {String|Object} json JSON string or object - * @param {Function} [reviver] Method for further parsing of JSON elements, called after each fabric object created. - * @param {Object} [options] options - * @param {AbortSignal} [options.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @return {Promise} instance - * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#deserialization} - * @see {@link http://jsfiddle.net/fabricjs/fmgXt/|jsFiddle demo} - * @example loadFromJSON - * canvas.loadFromJSON(json).then((canvas) => canvas.requestRenderAll()); - * @example loadFromJSON with reviver - * canvas.loadFromJSON(json, function(o, object) { - * // `o` = json object - * // `object` = fabric.Object instance - * // ... do some stuff ... - * }).then((canvas) => { - * ... canvas is restored, add your code. - * }); - * - */ - loadFromJSON: function (json, reviver, options) { - if (!json) { - return Promise.reject(new Error('fabric.js: `json` is undefined')); - } - // serialize if it wasn't already - var serialized = typeof json === 'string' ? JSON.parse(json) : Object.assign({}, json); - var _this = this, renderOnAddRemove = this.renderOnAddRemove; - this.renderOnAddRemove = false; - return Promise.all([ - fabric.util.enlivenObjects(serialized.objects || [], { - reviver: reviver, - signal: options && options.signal, - }), - fabric.util.enlivenObjectEnlivables({ - backgroundImage: serialized.backgroundImage, - backgroundColor: serialized.background, - overlayImage: serialized.overlayImage, - overlayColor: serialized.overlay, - clipPath: serialized.clipPath, - }, { signal: options && options.signal }), - ]).then(function (res) { - var enlived = res[0], enlivedMap = res[1]; - _this.clear(); - _this.__setupCanvas(serialized, enlived); - _this.renderOnAddRemove = renderOnAddRemove; - _this.set(enlivedMap); - return _this; - }); - }, - /** - * @private - * @param {Object} serialized Object with background and overlay information - * @param {Array} enlivenedObjects canvas objects - */ - __setupCanvas: function (serialized, enlivenedObjects) { - var _this = this; - enlivenedObjects.forEach(function (obj, index) { - // we splice the array just in case some custom classes restored from JSON - // will add more object to canvas at canvas init. - _this.insertAt(obj, index); - }); - // remove parts i cannot set as options - delete serialized.objects; - delete serialized.backgroundImage; - delete serialized.overlayImage; - delete serialized.background; - delete serialized.overlay; - // this._initOptions does too many things to just - // call it. Normally loading an Object from JSON - // create the Object instance. Here the Canvas is - // already an instance and we are just loading things over it - this._setOptions(serialized); - }, - /** - * Clones canvas instance - * @param {Array} [properties] Array of properties to include in the cloned canvas and children - * @returns {Promise} - */ - clone: function (properties) { - var data = JSON.stringify(this.toJSON(properties)); - return this.cloneWithoutData().then(function (clone) { - return clone.loadFromJSON(data); - }); - }, - /** - * Clones canvas instance without cloning existing data. - * This essentially copies canvas dimensions, clipping properties, etc. - * but leaves data empty (so that you can populate it with your own) - * @returns {Promise} - */ - cloneWithoutData: function () { - var el = fabric.util.createCanvasElement(); - el.width = this.width; - el.height = this.height; - // this seems wrong. either Canvas or StaticCanvas - var clone = new fabric.Canvas(el); - var data = {}; - if (this.backgroundImage) { - data.backgroundImage = this.backgroundImage.toObject(); - } - if (this.backgroundColor) { - data.background = this.backgroundColor.toObject - ? this.backgroundColor.toObject() - : this.backgroundColor; - } - return clone.loadFromJSON(data); - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric, degreesToRadians = fabric.util.degreesToRadians, radiansToDegrees = fabric.util.radiansToDegrees; - /** - * Adds support for multi-touch gestures using the Event.js library. - * Fires the following custom events: - * - touch:gesture - * - touch:drag - * - touch:orientation - * - touch:shake - * - touch:longpress - */ - fabric.util.object.extend(fabric.Canvas.prototype, - /** @lends fabric.Canvas.prototype */ { - /** - * Method that defines actions when an Event.js gesture is detected on an object. Currently only supports - * 2 finger gestures. - * @param {Event} e Event object by Event.js - * @param {Event} self Event proxy object by Event.js - */ - __onTransformGesture: function (e, self) { - if (this.isDrawingMode || - !e.touches || - e.touches.length !== 2 || - 'gesture' !== self.gesture) { - return; - } - var target = this.findTarget(e); - if ('undefined' !== typeof target) { - this.__gesturesParams = { - e: e, - self: self, - target: target, - }; - this.__gesturesRenderer(); - } - this.fire('touch:gesture', { - target: target, - e: e, - self: self, - }); - }, - __gesturesParams: null, - __gesturesRenderer: function () { - if (this.__gesturesParams === null || this._currentTransform === null) { - return; - } - var self = this.__gesturesParams.self, t = this._currentTransform, e = this.__gesturesParams.e; - t.action = 'scale'; - t.originX = t.originY = 'center'; - this._scaleObjectBy(self.scale, e); - if (self.rotation !== 0) { - t.action = 'rotate'; - this._rotateObjectByAngle(self.rotation, e); - } - this.requestRenderAll(); - t.action = 'drag'; - }, - /** - * Method that defines actions when an Event.js drag is detected. - * - * @param {Event} e Event object by Event.js - * @param {Event} self Event proxy object by Event.js - */ - __onDrag: function (e, self) { - this.fire('touch:drag', { - e: e, - self: self, - }); - }, - /** - * Method that defines actions when an Event.js orientation event is detected. - * - * @param {Event} e Event object by Event.js - * @param {Event} self Event proxy object by Event.js - */ - __onOrientationChange: function (e, self) { - this.fire('touch:orientation', { - e: e, - self: self, - }); - }, - /** - * Method that defines actions when an Event.js shake event is detected. - * - * @param {Event} e Event object by Event.js - * @param {Event} self Event proxy object by Event.js - */ - __onShake: function (e, self) { - this.fire('touch:shake', { - e: e, - self: self, - }); - }, - /** - * Method that defines actions when an Event.js longpress event is detected. - * - * @param {Event} e Event object by Event.js - * @param {Event} self Event proxy object by Event.js - */ - __onLongPress: function (e, self) { - this.fire('touch:longpress', { - e: e, - self: self, - }); - }, - /** - * Scales an object by a factor - * @param {Number} s The scale factor to apply to the current scale level - * @param {Event} e Event object by Event.js - */ - _scaleObjectBy: function (s, e) { - var t = this._currentTransform, target = t.target; - t.gestureScale = s; - target._scaling = true; - return fabric.controlsUtils.scalingEqually(e, t, 0, 0); - }, - /** - * Rotates object by an angle - * @param {Number} curAngle The angle of rotation in degrees - * @param {Event} e Event object by Event.js - */ - _rotateObjectByAngle: function (curAngle, e) { - var t = this._currentTransform; - if (t.target.get('lockRotation')) { - return; - } - t.target.rotate(radiansToDegrees(degreesToRadians(curAngle) + t.theta)); - this._fire('rotating', { - target: t.target, - e: e, - transform: t, - }); - }, - }); -})(typeof exports !== 'undefined' ? exports : window); + /** + * Returns source of this color (where source is an array representation; ex: [200, 200, 100, 1]) + * @return {Array} + */ + getSource: function() { + return this._source; + }, -(function (global) { - var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, clone = fabric.util.object.clone, toFixed = fabric.util.toFixed, capitalize = fabric.util.string.capitalize, degreesToRadians = fabric.util.degreesToRadians, objectCaching = !fabric.isLikelyNode, ALIASING_LIMIT = 2; /** - * Root object class from which all 2d shape classes inherit from - * @class fabric.Object - * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#objects} - * @see {@link fabric.Object#initialize} for constructor definition - * - * @fires added - * @fires removed - * - * @fires selected - * @fires deselected - * @fires modified - * @fires modified - * @fires moved - * @fires scaled - * @fires rotated - * @fires skewed - * - * @fires rotating - * @fires scaling - * @fires moving - * @fires skewing - * - * @fires mousedown - * @fires mouseup - * @fires mouseover - * @fires mouseout - * @fires mousewheel - * @fires mousedblclick - * - * @fires dragover - * @fires dragenter - * @fires dragleave - * @fires drop - */ - fabric.Object = fabric.util.createClass(fabric.CommonMethods, - /** @lends fabric.Object.prototype */ { - /** - * Type of an object (rect, circle, path, etc.). - * Note that this property is meant to be read-only and not meant to be modified. - * If you modify, certain parts of Fabric (such as JSON loading) won't work correctly. - * @type String - * @default - */ - type: 'object', - /** - * Horizontal origin of transformation of an object (one of "left", "right", "center") - * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups - * @type String - * @default - */ - originX: 'left', - /** - * Vertical origin of transformation of an object (one of "top", "bottom", "center") - * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups - * @type String - * @default - */ - originY: 'top', - /** - * Top position of an object. Note that by default it's relative to object top. You can change this by setting originY={top/center/bottom} - * @type Number - * @default - */ - top: 0, - /** - * Left position of an object. Note that by default it's relative to object left. You can change this by setting originX={left/center/right} - * @type Number - * @default - */ - left: 0, - /** - * Object width - * @type Number - * @default - */ - width: 0, - /** - * Object height - * @type Number - * @default - */ - height: 0, - /** - * Object scale factor (horizontal) - * @type Number - * @default - */ - scaleX: 1, - /** - * Object scale factor (vertical) - * @type Number - * @default - */ - scaleY: 1, - /** - * When true, an object is rendered as flipped horizontally - * @type Boolean - * @default - */ - flipX: false, - /** - * When true, an object is rendered as flipped vertically - * @type Boolean - * @default - */ - flipY: false, - /** - * Opacity of an object - * @type Number - * @default - */ - opacity: 1, - /** - * Angle of rotation of an object (in degrees) - * @type Number - * @default - */ - angle: 0, - /** - * Angle of skew on x axes of an object (in degrees) - * @type Number - * @default - */ - skewX: 0, - /** - * Angle of skew on y axes of an object (in degrees) - * @type Number - * @default - */ - skewY: 0, - /** - * Size of object's controlling corners (in pixels) - * @type Number - * @default - */ - cornerSize: 13, - /** - * Size of object's controlling corners when touch interaction is detected - * @type Number - * @default - */ - touchCornerSize: 24, - /** - * When true, object's controlling corners are rendered as transparent inside (i.e. stroke instead of fill) - * @type Boolean - * @default - */ - transparentCorners: true, - /** - * Default cursor value used when hovering over this object on canvas - * @type String - * @default - */ - hoverCursor: null, - /** - * Default cursor value used when moving this object on canvas - * @type String - * @default - */ - moveCursor: null, - /** - * Padding between object and its controlling borders (in pixels) - * @type Number - * @default - */ - padding: 0, - /** - * Color of controlling borders of an object (when it's active) - * @type String - * @default - */ - borderColor: 'rgb(178,204,255)', - /** - * Array specifying dash pattern of an object's borders (hasBorder must be true) - * @since 1.6.2 - * @type Array - */ - borderDashArray: null, - /** - * Color of controlling corners of an object (when it's active) - * @type String - * @default - */ - cornerColor: 'rgb(178,204,255)', - /** - * Color of controlling corners of an object (when it's active and transparentCorners false) - * @since 1.6.2 - * @type String - * @default - */ - cornerStrokeColor: null, - /** - * Specify style of control, 'rect' or 'circle' - * @since 1.6.2 - * @type String - */ - cornerStyle: 'rect', - /** - * Array specifying dash pattern of an object's control (hasBorder must be true) - * @since 1.6.2 - * @type Array - */ - cornerDashArray: null, - /** - * When true, this object will use center point as the origin of transformation - * when being scaled via the controls. - * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). - * @since 1.3.4 - * @type Boolean - * @default - */ - centeredScaling: false, - /** - * When true, this object will use center point as the origin of transformation - * when being rotated via the controls. - * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). - * @since 1.3.4 - * @type Boolean - * @default - */ - centeredRotation: true, - /** - * Color of object's fill - * takes css colors https://www.w3.org/TR/css-color-3/ - * @type String - * @default - */ - fill: 'rgb(0,0,0)', - /** - * Fill rule used to fill an object - * accepted values are nonzero, evenodd - * Backwards incompatibility note: This property was used for setting globalCompositeOperation until v1.4.12 (use `fabric.Object#globalCompositeOperation` instead) - * @type String - * @default - */ - fillRule: 'nonzero', - /** - * Composite rule used for canvas globalCompositeOperation - * @type String - * @default - */ - globalCompositeOperation: 'source-over', - /** - * Background color of an object. - * takes css colors https://www.w3.org/TR/css-color-3/ - * @type String - * @default - */ - backgroundColor: '', - /** - * Selection Background color of an object. colored layer behind the object when it is active. - * does not mix good with globalCompositeOperation methods. - * @type String - * @default - */ - selectionBackgroundColor: '', - /** - * When defined, an object is rendered via stroke and this property specifies its color - * takes css colors https://www.w3.org/TR/css-color-3/ - * @type String - * @default - */ - stroke: null, - /** - * Width of a stroke used to render this object - * @type Number - * @default - */ - strokeWidth: 1, - /** - * Array specifying dash pattern of an object's stroke (stroke must be defined) - * @type Array - */ - strokeDashArray: null, - /** - * Line offset of an object's stroke - * @type Number - * @default - */ - strokeDashOffset: 0, - /** - * Line endings style of an object's stroke (one of "butt", "round", "square") - * @type String - * @default - */ - strokeLineCap: 'butt', - /** - * Corner style of an object's stroke (one of "bevel", "round", "miter") - * @type String - * @default - */ - strokeLineJoin: 'miter', - /** - * Maximum miter length (used for strokeLineJoin = "miter") of an object's stroke - * @type Number - * @default - */ - strokeMiterLimit: 4, - /** - * Shadow object representing shadow of this shape - * @type fabric.Shadow - * @default - */ - shadow: null, - /** - * Opacity of object's controlling borders when object is active and moving - * @type Number - * @default - */ - borderOpacityWhenMoving: 0.4, - /** - * Scale factor of object's controlling borders - * bigger number will make a thicker border - * border is 1, so this is basically a border thickness - * since there is no way to change the border itself. - * @type Number - * @default - */ - borderScaleFactor: 1, - /** - * Minimum allowed scale value of an object - * @type Number - * @default - */ - minScaleLimit: 0, - /** - * When set to `false`, an object can not be selected for modification (using either point-click-based or group-based selection). - * But events still fire on it. - * @type Boolean - * @default - */ - selectable: true, - /** - * When set to `false`, an object can not be a target of events. All events propagate through it. Introduced in v1.3.4 - * @type Boolean - * @default - */ - evented: true, - /** - * When set to `false`, an object is not rendered on canvas - * @type Boolean - * @default - */ - visible: true, - /** - * When set to `false`, object's controls are not displayed and can not be used to manipulate object - * @type Boolean - * @default - */ - hasControls: true, - /** - * When set to `false`, object's controlling borders are not rendered - * @type Boolean - * @default - */ - hasBorders: true, - /** - * When set to `true`, objects are "found" on canvas on per-pixel basis rather than according to bounding box - * @type Boolean - * @default - */ - perPixelTargetFind: false, - /** - * When `false`, default object's values are not included in its serialization - * @type Boolean - * @default - */ - includeDefaultValues: true, - /** - * When `true`, object horizontal movement is locked - * @type Boolean - * @default - */ - lockMovementX: false, - /** - * When `true`, object vertical movement is locked - * @type Boolean - * @default - */ - lockMovementY: false, - /** - * When `true`, object rotation is locked - * @type Boolean - * @default - */ - lockRotation: false, - /** - * When `true`, object horizontal scaling is locked - * @type Boolean - * @default - */ - lockScalingX: false, - /** - * When `true`, object vertical scaling is locked - * @type Boolean - * @default - */ - lockScalingY: false, - /** - * When `true`, object horizontal skewing is locked - * @type Boolean - * @default - */ - lockSkewingX: false, - /** - * When `true`, object vertical skewing is locked - * @type Boolean - * @default - */ - lockSkewingY: false, - /** - * When `true`, object cannot be flipped by scaling into negative values - * @type Boolean - * @default - */ - lockScalingFlip: false, - /** - * When `true`, object is not exported in OBJECT/JSON - * @since 1.6.3 - * @type Boolean - * @default - */ - excludeFromExport: false, - /** - * When `true`, object is cached on an additional canvas. - * When `false`, object is not cached unless necessary ( clipPath ) - * default to true - * @since 1.7.0 - * @type Boolean - * @default true - */ - objectCaching: objectCaching, - /** - * When `true`, object properties are checked for cache invalidation. In some particular - * situation you may want this to be disabled ( spray brush, very big, groups) - * or if your application does not allow you to modify properties for groups child you want - * to disable it for groups. - * default to false - * since 1.7.0 - * @type Boolean - * @default false - */ - statefullCache: false, - /** - * When `true`, cache does not get updated during scaling. The picture will get blocky if scaled - * too much and will be redrawn with correct details at the end of scaling. - * this setting is performance and application dependant. - * default to true - * since 1.7.0 - * @type Boolean - * @default true - */ - noScaleCache: true, - /** - * When `false`, the stoke width will scale with the object. - * When `true`, the stroke will always match the exact pixel size entered for stroke width. - * this Property does not work on Text classes or drawing call that uses strokeText,fillText methods - * default to false - * @since 2.6.0 - * @type Boolean - * @default false - * @type Boolean - * @default false - */ - strokeUniform: false, - /** - * When set to `true`, object's cache will be rerendered next render call. - * since 1.7.0 - * @type Boolean - * @default true - */ - dirty: true, - /** - * keeps the value of the last hovered corner during mouse move. - * 0 is no corner, or 'mt', 'ml', 'mtr' etc.. - * It should be private, but there is no harm in using it as - * a read-only property. - * @type number|string|any - * @default 0 - */ - __corner: 0, - /** - * Determines if the fill or the stroke is drawn first (one of "fill" or "stroke") - * @type String - * @default - */ - paintFirst: 'fill', - /** - * When 'down', object is set to active on mousedown/touchstart - * When 'up', object is set to active on mouseup/touchend - * Experimental. Let's see if this breaks anything before supporting officially - * @private - * since 4.4.0 - * @type String - * @default 'down' - */ - activeOn: 'down', - /** - * List of properties to consider when checking if state - * of an object is changed (fabric.Object#hasStateChanged) - * as well as for history (undo/redo) purposes - * @type Array - */ - stateProperties: ('top left width height scaleX scaleY flipX flipY originX originY transformMatrix ' + - 'stroke strokeWidth strokeDashArray strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit ' + - 'angle opacity fill globalCompositeOperation shadow visible backgroundColor ' + - 'skewX skewY fillRule paintFirst clipPath strokeUniform').split(' '), - /** - * List of properties to consider when checking if cache needs refresh - * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single - * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty - * and refreshed at the next render - * @type Array - */ - cacheProperties: ('fill stroke strokeWidth strokeDashArray width height paintFirst strokeUniform' + - ' strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit backgroundColor clipPath').split(' '), - /** - * List of properties to consider for animating colors. - * @type Array - */ - colorProperties: 'fill stroke backgroundColor'.split(' '), - /** - * a fabricObject that, without stroke define a clipping area with their shape. filled in black - * the clipPath object gets used when the object has rendered, and the context is placed in the center - * of the object cacheCanvas. - * If you want 0,0 of a clipPath to align with an object center, use clipPath.originX/Y to 'center' - * @type fabric.Object - */ - clipPath: undefined, - /** - * Meaningful ONLY when the object is used as clipPath. - * if true, the clipPath will make the object clip to the outside of the clipPath - * since 2.4.0 - * @type boolean - * @default false - */ - inverted: false, - /** - * Meaningful ONLY when the object is used as clipPath. - * if true, the clipPath will have its top and left relative to canvas, and will - * not be influenced by the object transform. This will make the clipPath relative - * to the canvas, but clipping just a particular object. - * WARNING this is beta, this feature may change or be renamed. - * since 2.4.0 - * @type boolean - * @default false - */ - absolutePositioned: false, - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function (options) { - if (options) { - this.setOptions(options); - } - }, - /** - * Create a the canvas used to keep the cached copy of the object - * @private - */ - _createCacheCanvas: function () { - this._cacheProperties = {}; - this._cacheCanvas = fabric.util.createCanvasElement(); - this._cacheContext = this._cacheCanvas.getContext('2d'); - this._updateCacheCanvas(); - // if canvas gets created, is empty, so dirty. - this.dirty = true; - }, - /** - * Limit the cache dimensions so that X * Y do not cross config.perfLimitSizeTotal - * and each side do not cross fabric.cacheSideLimit - * those numbers are configurable so that you can get as much detail as you want - * making bargain with performances. - * @param {Object} dims - * @param {Object} dims.width width of canvas - * @param {Object} dims.height height of canvas - * @param {Object} dims.zoomX zoomX zoom value to unscale the canvas before drawing cache - * @param {Object} dims.zoomY zoomY zoom value to unscale the canvas before drawing cache - * @return {Object}.width width of canvas - * @return {Object}.height height of canvas - * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache - * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache - */ - _limitCacheSize: function (dims) { - var width = dims.width, height = dims.height, max = config.maxCacheSideLimit, min = config.minCacheSideLimit; - if (width <= max && - height <= max && - width * height <= config.perfLimitSizeTotal) { - if (width < min) { - dims.width = min; - } - if (height < min) { - dims.height = min; - } - return dims; - } - var ar = width / height, [limX, limY] = cache.limitDimsByArea(ar), x = capValue(min, limX, max), y = capValue(min, limY, max); - if (width > x) { - dims.zoomX /= width / x; - dims.width = x; - dims.capped = true; - } - if (height > y) { - dims.zoomY /= height / y; - dims.height = y; - dims.capped = true; - } - return dims; - }, - /** - * Return the dimension and the zoom level needed to create a cache canvas - * big enough to host the object to be cached. - * @private - * @return {Object}.x width of object to be cached - * @return {Object}.y height of object to be cached - * @return {Object}.width width of canvas - * @return {Object}.height height of canvas - * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache - * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache - */ - _getCacheCanvasDimensions: function () { - var objectScale = this.getTotalObjectScaling(), - // caculate dimensions without skewing - dim = this._getTransformedDimensions({ skewX: 0, skewY: 0 }), neededX = (dim.x * objectScale.x) / this.scaleX, neededY = (dim.y * objectScale.y) / this.scaleY; - return { - // for sure this ALIASING_LIMIT is slightly creating problem - // in situation in which the cache canvas gets an upper limit - // also objectScale contains already scaleX and scaleY - width: neededX + ALIASING_LIMIT, - height: neededY + ALIASING_LIMIT, - zoomX: objectScale.x, - zoomY: objectScale.y, - x: neededX, - y: neededY, - }; - }, - /** - * Update width and height of the canvas for cache - * returns true or false if canvas needed resize. - * @private - * @return {Boolean} true if the canvas has been resized - */ - _updateCacheCanvas: function () { - var targetCanvas = this.canvas; - if (this.noScaleCache && - targetCanvas && - targetCanvas._currentTransform) { - var target = targetCanvas._currentTransform.target, action = targetCanvas._currentTransform.action; - if (this === target && - action.slice && - action.slice(0, 5) === 'scale') { - return false; - } - } - var canvas = this._cacheCanvas, dims = this._limitCacheSize(this._getCacheCanvasDimensions()), minCacheSize = config.minCacheSideLimit, width = dims.width, height = dims.height, drawingWidth, drawingHeight, zoomX = dims.zoomX, zoomY = dims.zoomY, dimensionsChanged = width !== this.cacheWidth || height !== this.cacheHeight, zoomChanged = this.zoomX !== zoomX || this.zoomY !== zoomY, shouldRedraw = dimensionsChanged || zoomChanged, additionalWidth = 0, additionalHeight = 0, shouldResizeCanvas = false; - if (dimensionsChanged) { - var canvasWidth = this._cacheCanvas.width, canvasHeight = this._cacheCanvas.height, sizeGrowing = width > canvasWidth || height > canvasHeight, sizeShrinking = (width < canvasWidth * 0.9 || height < canvasHeight * 0.9) && - canvasWidth > minCacheSize && - canvasHeight > minCacheSize; - shouldResizeCanvas = sizeGrowing || sizeShrinking; - if (sizeGrowing && - !dims.capped && - (width > minCacheSize || height > minCacheSize)) { - additionalWidth = width * 0.1; - additionalHeight = height * 0.1; - } - } - if (this instanceof fabric.Text && this.path) { - shouldRedraw = true; - shouldResizeCanvas = true; - additionalWidth += this.getHeightOfLine(0) * this.zoomX; - additionalHeight += this.getHeightOfLine(0) * this.zoomY; - } - if (shouldRedraw) { - if (shouldResizeCanvas) { - canvas.width = Math.ceil(width + additionalWidth); - canvas.height = Math.ceil(height + additionalHeight); - } - else { - this._cacheContext.setTransform(1, 0, 0, 1, 0, 0); - this._cacheContext.clearRect(0, 0, canvas.width, canvas.height); - } - drawingWidth = dims.x / 2; - drawingHeight = dims.y / 2; - this.cacheTranslationX = - Math.round(canvas.width / 2 - drawingWidth) + drawingWidth; - this.cacheTranslationY = - Math.round(canvas.height / 2 - drawingHeight) + drawingHeight; - this.cacheWidth = width; - this.cacheHeight = height; - this._cacheContext.translate(this.cacheTranslationX, this.cacheTranslationY); - this._cacheContext.scale(zoomX, zoomY); - this.zoomX = zoomX; - this.zoomY = zoomY; - return true; - } - return false; - }, - /** - * Sets object's properties from options - * @param {Object} [options] Options object - */ - setOptions: function (options) { - this._setOptions(options); - }, - /** - * Transforms context when rendering an object - * @param {CanvasRenderingContext2D} ctx Context - */ - transform: function (ctx) { - var needFullTransform = (this.group && !this.group._transformDone) || - (this.group && this.canvas && ctx === this.canvas.contextTop); - var m = this.calcTransformMatrix(!needFullTransform); - ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); - }, - /** - * Returns an object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toObject: function (propertiesToInclude) { - const NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS, clipPathData = this.clipPath && !this.clipPath.excludeFromExport - ? Object.assign(Object.assign({}, this.clipPath.toObject(propertiesToInclude)), { inverted: this.clipPath.inverted, absolutePositioned: this.clipPath.absolutePositioned }) : null, object = Object.assign(Object.assign(Object.assign({}, pick(this, propertiesToInclude)), { type: this.type, version: version, originX: this.originX, originY: this.originY, left: toFixed(this.left, NUM_FRACTION_DIGITS), top: toFixed(this.top, NUM_FRACTION_DIGITS), width: toFixed(this.width, NUM_FRACTION_DIGITS), height: toFixed(this.height, NUM_FRACTION_DIGITS), fill: this.fill && this.fill.toObject - ? this.fill.toObject() - : this.fill, stroke: this.stroke && this.stroke.toObject - ? this.stroke.toObject() - : this.stroke, strokeWidth: toFixed(this.strokeWidth, NUM_FRACTION_DIGITS), strokeDashArray: this.strokeDashArray - ? this.strokeDashArray.concat() - : this.strokeDashArray, strokeLineCap: this.strokeLineCap, strokeDashOffset: this.strokeDashOffset, strokeLineJoin: this.strokeLineJoin, strokeUniform: this.strokeUniform, strokeMiterLimit: toFixed(this.strokeMiterLimit, NUM_FRACTION_DIGITS), scaleX: toFixed(this.scaleX, NUM_FRACTION_DIGITS), scaleY: toFixed(this.scaleY, NUM_FRACTION_DIGITS), angle: toFixed(this.angle, NUM_FRACTION_DIGITS), flipX: this.flipX, flipY: this.flipY, opacity: toFixed(this.opacity, NUM_FRACTION_DIGITS), shadow: this.shadow && this.shadow.toObject - ? this.shadow.toObject() - : this.shadow, visible: this.visible, backgroundColor: this.backgroundColor, fillRule: this.fillRule, paintFirst: this.paintFirst, globalCompositeOperation: this.globalCompositeOperation, skewX: toFixed(this.skewX, NUM_FRACTION_DIGITS), skewY: toFixed(this.skewY, NUM_FRACTION_DIGITS) }), (clipPathData ? { clipPath: clipPathData } : null)); - return !this.includeDefaultValues - ? this._removeDefaultValues(object) - : object; - }, - /** - * Returns (dataless) object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toDatalessObject: function (propertiesToInclude) { - // will be overwritten by subclasses - return this.toObject(propertiesToInclude); - }, - /** - * @private - * @param {Object} object - */ - _removeDefaultValues: function (object) { - var prototype = fabric.util.getKlass(object.type).prototype; - Object.keys(object).forEach(function (prop) { - if (prop === 'left' || prop === 'top' || prop === 'type') { - return; - } - if (object[prop] === prototype[prop]) { - delete object[prop]; - } - // basically a check for [] === [] - if (Array.isArray(object[prop]) && - Array.isArray(prototype[prop]) && - object[prop].length === 0 && - prototype[prop].length === 0) { - delete object[prop]; - } - }); - return object; - }, - /** - * Returns a string representation of an instance - * @return {String} - */ - toString: function () { - return '#'; - }, - /** - * Return the object scale factor counting also the group scaling - * @return {Point} - */ - getObjectScaling: function () { - // if the object is a top level one, on the canvas, we go for simple aritmetic - // otherwise the complex method with angles will return approximations and decimals - // and will likely kill the cache when not needed - // https://github.com/fabricjs/fabric.js/issues/7157 - if (!this.group) { - return new Point(Math.abs(this.scaleX), Math.abs(this.scaleY)); - } - // if we are inside a group total zoom calculation is complex, we defer to generic matrices - var options = fabric.util.qrDecompose(this.calcTransformMatrix()); - return new Point(Math.abs(options.scaleX), Math.abs(options.scaleY)); - }, - /** - * Return the object scale factor counting also the group scaling, zoom and retina - * @return {Object} object with scaleX and scaleY properties - */ - getTotalObjectScaling: function () { - var scale = this.getObjectScaling(); - if (this.canvas) { - var zoom = this.canvas.getZoom(); - var retina = this.canvas.getRetinaScaling(); - return scale.scalarMultiply(zoom * retina); - } - return scale; - }, - /** - * Return the object opacity counting also the group property - * @return {Number} - */ - getObjectOpacity: function () { - var opacity = this.opacity; - if (this.group) { - opacity *= this.group.getObjectOpacity(); - } - return opacity; - }, - /** - * Returns the object angle relative to canvas counting also the group property - * @returns {number} - */ - getTotalAngle: function () { - return this.group - ? fabric.util.qrDecompose(this.calcTransformMatrix()).angle - : this.angle; - }, - /** - * @private - * @param {String} key - * @param {*} value - * @return {fabric.Object} thisArg - */ - _set: function (key, value) { - var shouldConstrainValue = key === 'scaleX' || key === 'scaleY', isChanged = this[key] !== value, groupNeedsUpdate = false; - if (shouldConstrainValue) { - value = this._constrainScale(value); - } - if (key === 'scaleX' && value < 0) { - this.flipX = !this.flipX; - value *= -1; - } - else if (key === 'scaleY' && value < 0) { - this.flipY = !this.flipY; - value *= -1; - } - else if (key === 'shadow' && - value && - !(value instanceof fabric.Shadow)) { - value = new fabric.Shadow(value); - } - else if (key === 'dirty' && this.group) { - this.group.set('dirty', value); - } - this[key] = value; - if (isChanged) { - groupNeedsUpdate = this.group && this.group.isOnACache(); - if (this.cacheProperties.indexOf(key) > -1) { - this.dirty = true; - groupNeedsUpdate && this.group.set('dirty', true); - } - else if (groupNeedsUpdate && - this.stateProperties.indexOf(key) > -1) { - this.group.set('dirty', true); - } - } - return this; - }, - /** - * Retrieves viewportTransform from Object's canvas if possible - * @method getViewportTransform - * @memberOf fabric.Object.prototype - * @return {Array} - */ - getViewportTransform: function () { - if (this.canvas && this.canvas.viewportTransform) { - return this.canvas.viewportTransform; - } - return fabric.iMatrix.concat(); - }, - /* - * @private - * return if the object would be visible in rendering - * @memberOf fabric.Object.prototype - * @return {Boolean} - */ - isNotVisible: function () { - return (this.opacity === 0 || - (!this.width && !this.height && this.strokeWidth === 0) || - !this.visible); - }, - /** - * Renders an object on a specified context - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - render: function (ctx) { - // do not render if width/height are zeros or object is not visible - if (this.isNotVisible()) { - return; - } - if (this.canvas && - this.canvas.skipOffscreen && - !this.group && - !this.isOnScreen()) { - return; - } - ctx.save(); - this._setupCompositeOperation(ctx); - this.drawSelectionBackground(ctx); - this.transform(ctx); - this._setOpacity(ctx); - this._setShadow(ctx, this); - if (this.shouldCache()) { - this.renderCache(); - this.drawCacheOnCanvas(ctx); - } - else { - this._removeCacheCanvas(); - this.dirty = false; - this.drawObject(ctx); - if (this.objectCaching && this.statefullCache) { - this.saveState({ propertySet: 'cacheProperties' }); - } - } - ctx.restore(); - }, - renderCache: function (options) { - options = options || {}; - if (!this._cacheCanvas || !this._cacheContext) { - this._createCacheCanvas(); - } - if (this.isCacheDirty()) { - this.statefullCache && - this.saveState({ propertySet: 'cacheProperties' }); - this.drawObject(this._cacheContext, options.forClipping); - this.dirty = false; - } - }, - /** - * Remove cacheCanvas and its dimensions from the objects - */ - _removeCacheCanvas: function () { - this._cacheCanvas = null; - this._cacheContext = null; - this.cacheWidth = 0; - this.cacheHeight = 0; - }, - /** - * return true if the object will draw a stroke - * Does not consider text styles. This is just a shortcut used at rendering time - * We want it to be an approximation and be fast. - * wrote to avoid extra caching, it has to return true when stroke happens, - * can guess when it will not happen at 100% chance, does not matter if it misses - * some use case where the stroke is invisible. - * @since 3.0.0 - * @returns Boolean - */ - hasStroke: function () { - return (this.stroke && this.stroke !== 'transparent' && this.strokeWidth !== 0); - }, - /** - * return true if the object will draw a fill - * Does not consider text styles. This is just a shortcut used at rendering time - * We want it to be an approximation and be fast. - * wrote to avoid extra caching, it has to return true when fill happens, - * can guess when it will not happen at 100% chance, does not matter if it misses - * some use case where the fill is invisible. - * @since 3.0.0 - * @returns Boolean - */ - hasFill: function () { - return this.fill && this.fill !== 'transparent'; - }, - /** - * When set to `true`, force the object to have its own cache, even if it is inside a group - * it may be needed when your object behave in a particular way on the cache and always needs - * its own isolated canvas to render correctly. - * Created to be overridden - * since 1.7.12 - * @returns Boolean - */ - needsItsOwnCache: function () { - if (this.paintFirst === 'stroke' && - this.hasFill() && - this.hasStroke() && - typeof this.shadow === 'object') { - return true; - } - if (this.clipPath) { - return true; - } - return false; - }, - /** - * Decide if the object should cache or not. Create its own cache level - * objectCaching is a global flag, wins over everything - * needsItsOwnCache should be used when the object drawing method requires - * a cache step. None of the fabric classes requires it. - * Generally you do not cache objects in groups because the group outside is cached. - * Read as: cache if is needed, or if the feature is enabled but we are not already caching. - * @return {Boolean} - */ - shouldCache: function () { - this.ownCaching = - this.needsItsOwnCache() || - (this.objectCaching && (!this.group || !this.group.isOnACache())); - return this.ownCaching; - }, - /** - * Check if this object or a child object will cast a shadow - * used by Group.shouldCache to know if child has a shadow recursively - * @return {Boolean} - * @deprecated - */ - willDrawShadow: function () { - return (!!this.shadow && - (this.shadow.offsetX !== 0 || this.shadow.offsetY !== 0)); - }, - /** - * Execute the drawing operation for an object clipPath - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {fabric.Object} clipPath - */ - drawClipPathOnCache: function (ctx, clipPath) { - ctx.save(); - // DEBUG: uncomment this line, comment the following - // ctx.globalAlpha = 0.4 - if (clipPath.inverted) { - ctx.globalCompositeOperation = 'destination-out'; - } - else { - ctx.globalCompositeOperation = 'destination-in'; - } - //ctx.scale(1 / 2, 1 / 2); - if (clipPath.absolutePositioned) { - var m = fabric.util.invertTransform(this.calcTransformMatrix()); - ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); - } - clipPath.transform(ctx); - ctx.scale(1 / clipPath.zoomX, 1 / clipPath.zoomY); - ctx.drawImage(clipPath._cacheCanvas, -clipPath.cacheTranslationX, -clipPath.cacheTranslationY); - ctx.restore(); - }, - /** - * Execute the drawing operation for an object on a specified context - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - drawObject: function (ctx, forClipping) { - var originalFill = this.fill, originalStroke = this.stroke; - if (forClipping) { - this.fill = 'black'; - this.stroke = ''; - this._setClippingProperties(ctx); - } - else { - this._renderBackground(ctx); - } - this._render(ctx); - this._drawClipPath(ctx, this.clipPath); - this.fill = originalFill; - this.stroke = originalStroke; - }, - /** - * Prepare clipPath state and cache and draw it on instance's cache - * @param {CanvasRenderingContext2D} ctx - * @param {fabric.Object} clipPath - */ - _drawClipPath: function (ctx, clipPath) { - if (!clipPath) { - return; - } - // needed to setup a couple of variables - // path canvas gets overridden with this one. - // TODO find a better solution? - clipPath._set('canvas', this.canvas); - clipPath.shouldCache(); - clipPath._transformDone = true; - clipPath.renderCache({ forClipping: true }); - this.drawClipPathOnCache(ctx, clipPath); - }, - /** - * Paint the cached copy of the object on the target context. - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - drawCacheOnCanvas: function (ctx) { - ctx.scale(1 / this.zoomX, 1 / this.zoomY); - ctx.drawImage(this._cacheCanvas, -this.cacheTranslationX, -this.cacheTranslationY); - }, - /** - * Check if cache is dirty - * @param {Boolean} skipCanvas skip canvas checks because this object is painted - * on parent canvas. - */ - isCacheDirty: function (skipCanvas) { - if (this.isNotVisible()) { - return false; - } - if (this._cacheCanvas && - this._cacheContext && - !skipCanvas && - this._updateCacheCanvas()) { - // in this case the context is already cleared. - return true; - } - else { - if (this.dirty || - (this.clipPath && this.clipPath.absolutePositioned) || - (this.statefullCache && this.hasStateChanged('cacheProperties'))) { - if (this._cacheCanvas && this._cacheContext && !skipCanvas) { - var width = this.cacheWidth / this.zoomX; - var height = this.cacheHeight / this.zoomY; - this._cacheContext.clearRect(-width / 2, -height / 2, width, height); - } - return true; - } - } - return false; - }, - /** - * Draws a background for the object big as its untransformed dimensions - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderBackground: function (ctx) { - if (!this.backgroundColor) { - return; - } - var dim = this._getNonTransformedDimensions(); - ctx.fillStyle = this.backgroundColor; - ctx.fillRect(-dim.x / 2, -dim.y / 2, dim.x, dim.y); - // if there is background color no other shadows - // should be casted - this._removeShadow(ctx); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _setOpacity: function (ctx) { - if (this.group && !this.group._transformDone) { - ctx.globalAlpha = this.getObjectOpacity(); - } - else { - ctx.globalAlpha *= this.opacity; - } - }, - _setStrokeStyles: function (ctx, decl) { - var stroke = decl.stroke; - if (stroke) { - ctx.lineWidth = decl.strokeWidth; - ctx.lineCap = decl.strokeLineCap; - ctx.lineDashOffset = decl.strokeDashOffset; - ctx.lineJoin = decl.strokeLineJoin; - ctx.miterLimit = decl.strokeMiterLimit; - if (stroke.toLive) { - if (stroke.gradientUnits === 'percentage' || - stroke.gradientTransform || - stroke.patternTransform) { - // need to transform gradient in a pattern. - // this is a slow process. If you are hitting this codepath, and the object - // is not using caching, you should consider switching it on. - // we need a canvas as big as the current object caching canvas. - this._applyPatternForTransformedGradient(ctx, stroke); - } - else { - // is a simple gradient or pattern - ctx.strokeStyle = stroke.toLive(ctx, this); - this._applyPatternGradientTransform(ctx, stroke); - } - } - else { - // is a color - ctx.strokeStyle = decl.stroke; - } - } - }, - _setFillStyles: function (ctx, decl) { - var fill = decl.fill; - if (fill) { - if (fill.toLive) { - ctx.fillStyle = fill.toLive(ctx, this); - this._applyPatternGradientTransform(ctx, decl.fill); - } - else { - ctx.fillStyle = fill; - } - } - }, - _setClippingProperties: function (ctx) { - ctx.globalAlpha = 1; - ctx.strokeStyle = 'transparent'; - ctx.fillStyle = '#000000'; - }, - /** - * @private - * Sets line dash - * @param {CanvasRenderingContext2D} ctx Context to set the dash line on - * @param {Array} dashArray array representing dashes - */ - _setLineDash: function (ctx, dashArray) { - if (!dashArray || dashArray.length === 0) { - return; - } - // Spec requires the concatenation of two copies the dash list when the number of elements is odd - if (1 & dashArray.length) { - dashArray.push.apply(dashArray, dashArray); - } - ctx.setLineDash(dashArray); - }, - /** - * Renders controls and borders for the object - * the context here is not transformed - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Object} [styleOverride] properties to override the object style - */ - _renderControls: function (ctx, styleOverride) { - var vpt = this.getViewportTransform(), matrix = this.calcTransformMatrix(), options, drawBorders, drawControls; - styleOverride = styleOverride || {}; - drawBorders = - typeof styleOverride.hasBorders !== 'undefined' - ? styleOverride.hasBorders - : this.hasBorders; - drawControls = - typeof styleOverride.hasControls !== 'undefined' - ? styleOverride.hasControls - : this.hasControls; - matrix = fabric.util.multiplyTransformMatrices(vpt, matrix); - options = fabric.util.qrDecompose(matrix); - ctx.save(); - ctx.translate(options.translateX, options.translateY); - ctx.lineWidth = 1 * this.borderScaleFactor; - if (!this.group) { - ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1; - } - if (this.flipX) { - options.angle -= 180; - } - ctx.rotate(degreesToRadians(this.group ? options.angle : this.angle)); - drawBorders && this.drawBorders(ctx, options, styleOverride); - drawControls && this.drawControls(ctx, styleOverride); - ctx.restore(); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _setShadow: function (ctx) { - if (!this.shadow) { - return; - } - var shadow = this.shadow, canvas = this.canvas, multX = (canvas && canvas.viewportTransform[0]) || 1, multY = (canvas && canvas.viewportTransform[3]) || 1, scaling = shadow.nonScaling - ? new Point(1, 1) - : this.getObjectScaling(); - if (canvas && canvas._isRetinaScaling()) { - multX *= config.devicePixelRatio; - multY *= config.devicePixelRatio; - } - ctx.shadowColor = shadow.color; - ctx.shadowBlur = - (shadow.blur * - config.browserShadowBlurConstant * - (multX + multY) * - (scaling.x + scaling.y)) / - 4; - ctx.shadowOffsetX = shadow.offsetX * multX * scaling.x; - ctx.shadowOffsetY = shadow.offsetY * multY * scaling.y; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _removeShadow: function (ctx) { - if (!this.shadow) { - return; - } - ctx.shadowColor = ''; - ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Object} filler fabric.Pattern or fabric.Gradient - * @return {Object} offset.offsetX offset for text rendering - * @return {Object} offset.offsetY offset for text rendering - */ - _applyPatternGradientTransform: function (ctx, filler) { - if (!filler || !filler.toLive) { - return { offsetX: 0, offsetY: 0 }; - } - var t = filler.gradientTransform || filler.patternTransform; - var offsetX = -this.width / 2 + filler.offsetX || 0, offsetY = -this.height / 2 + filler.offsetY || 0; - if (filler.gradientUnits === 'percentage') { - ctx.transform(this.width, 0, 0, this.height, offsetX, offsetY); - } - else { - ctx.transform(1, 0, 0, 1, offsetX, offsetY); - } - if (t) { - ctx.transform(t[0], t[1], t[2], t[3], t[4], t[5]); - } - return { offsetX: offsetX, offsetY: offsetY }; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderPaintInOrder: function (ctx) { - if (this.paintFirst === 'stroke') { - this._renderStroke(ctx); - this._renderFill(ctx); - } - else { - this._renderFill(ctx); - this._renderStroke(ctx); - } - }, - /** - * @private - * function that actually render something on the context. - * empty here to allow Obects to work on tests to benchmark fabric functionalites - * not related to rendering - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function ( /* ctx */) { }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderFill: function (ctx) { - if (!this.fill) { - return; - } - ctx.save(); - this._setFillStyles(ctx, this); - if (this.fillRule === 'evenodd') { - ctx.fill('evenodd'); - } - else { - ctx.fill(); - } - ctx.restore(); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderStroke: function (ctx) { - if (!this.stroke || this.strokeWidth === 0) { - return; - } - if (this.shadow && !this.shadow.affectStroke) { - this._removeShadow(ctx); - } - ctx.save(); - if (this.strokeUniform) { - var scaling = this.getObjectScaling(); - ctx.scale(1 / scaling.x, 1 / scaling.y); - } - this._setLineDash(ctx, this.strokeDashArray); - this._setStrokeStyles(ctx, this); - ctx.stroke(); - ctx.restore(); - }, - /** - * This function try to patch the missing gradientTransform on canvas gradients. - * transforming a context to transform the gradient, is going to transform the stroke too. - * we want to transform the gradient but not the stroke operation, so we create - * a transformed gradient on a pattern and then we use the pattern instead of the gradient. - * this method has drwabacks: is slow, is in low resolution, needs a patch for when the size - * is limited. - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {fabric.Gradient} filler a fabric gradient instance - */ - _applyPatternForTransformedGradient: function (ctx, filler) { - var dims = this._limitCacheSize(this._getCacheCanvasDimensions()), pCanvas = fabric.util.createCanvasElement(), pCtx, retinaScaling = this.canvas.getRetinaScaling(), width = dims.x / this.scaleX / retinaScaling, height = dims.y / this.scaleY / retinaScaling; - pCanvas.width = width; - pCanvas.height = height; - pCtx = pCanvas.getContext('2d'); - pCtx.beginPath(); - pCtx.moveTo(0, 0); - pCtx.lineTo(width, 0); - pCtx.lineTo(width, height); - pCtx.lineTo(0, height); - pCtx.closePath(); - pCtx.translate(width / 2, height / 2); - pCtx.scale(dims.zoomX / this.scaleX / retinaScaling, dims.zoomY / this.scaleY / retinaScaling); - this._applyPatternGradientTransform(pCtx, filler); - pCtx.fillStyle = filler.toLive(ctx); - pCtx.fill(); - ctx.translate(-this.width / 2 - this.strokeWidth / 2, -this.height / 2 - this.strokeWidth / 2); - ctx.scale((retinaScaling * this.scaleX) / dims.zoomX, (retinaScaling * this.scaleY) / dims.zoomY); - ctx.strokeStyle = pCtx.createPattern(pCanvas, 'no-repeat'); - }, - /** - * This function is an helper for svg import. it returns the center of the object in the svg - * untransformed coordinates - * @private - * @return {Object} center point from element coordinates - */ - _findCenterFromElement: function () { - return { x: this.left + this.width / 2, y: this.top + this.height / 2 }; - }, - /** - * This function is an helper for svg import. it decompose the transformMatrix - * and assign properties to object. - * untransformed coordinates - * @private - * @chainable - */ - _assignTransformMatrixProps: function () { - if (this.transformMatrix) { - var options = fabric.util.qrDecompose(this.transformMatrix); - this.flipX = false; - this.flipY = false; - this.set('scaleX', options.scaleX); - this.set('scaleY', options.scaleY); - this.angle = options.angle; - this.skewX = options.skewX; - this.skewY = 0; - } - }, - /** - * This function is an helper for svg import. it removes the transform matrix - * and set to object properties that fabricjs can handle - * @private - * @param {Object} preserveAspectRatioOptions - * @return {thisArg} - */ - _removeTransformMatrix: function (preserveAspectRatioOptions) { - var center = this._findCenterFromElement(); - if (this.transformMatrix) { - this._assignTransformMatrixProps(); - center = fabric.util.transformPoint(center, this.transformMatrix); - } - this.transformMatrix = null; - if (preserveAspectRatioOptions) { - this.scaleX *= preserveAspectRatioOptions.scaleX; - this.scaleY *= preserveAspectRatioOptions.scaleY; - this.cropX = preserveAspectRatioOptions.cropX; - this.cropY = preserveAspectRatioOptions.cropY; - center.x += preserveAspectRatioOptions.offsetLeft; - center.y += preserveAspectRatioOptions.offsetTop; - this.width = preserveAspectRatioOptions.width; - this.height = preserveAspectRatioOptions.height; - } - this.setPositionByOrigin(center, 'center', 'center'); - }, - /** - * Clones an instance. - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @returns {Promise} - */ - clone: function (propertiesToInclude) { - var objectForm = this.toObject(propertiesToInclude); - return this.constructor.fromObject(objectForm); - }, - /** - * Creates an instance of fabric.Image out of an object - * makes use of toCanvasElement. - * Once this method was based on toDataUrl and loadImage, so it also had a quality - * and format option. toCanvasElement is faster and produce no loss of quality. - * If you need to get a real Jpeg or Png from an object, using toDataURL is the right way to do it. - * toCanvasElement and then toBlob from the obtained canvas is also a good option. - * @param {Object} [options] for clone as image, passed to toDataURL - * @param {Number} [options.multiplier=1] Multiplier to scale by - * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 - * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 - * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 - * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 - * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 - * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 - * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 - * @return {fabric.Image} Object cloned as image. - */ - cloneAsImage: function (options) { - var canvasEl = this.toCanvasElement(options); - return new fabric.Image(canvasEl); - }, - /** - * Converts an object into a HTMLCanvas element - * @param {Object} options Options object - * @param {Number} [options.multiplier=1] Multiplier to scale by - * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 - * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 - * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 - * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 - * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 - * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 - * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 - * @return {HTMLCanvasElement} Returns DOM element with the fabric.Object - */ - toCanvasElement: function (options) { - options || (options = {}); - var utils = fabric.util, origParams = utils.saveObjectTransform(this), originalGroup = this.group, originalShadow = this.shadow, abs = Math.abs, retinaScaling = options.enableRetinaScaling - ? Math.max(config.devicePixelRatio, 1) - : 1, multiplier = (options.multiplier || 1) * retinaScaling; - delete this.group; - if (options.withoutTransform) { - utils.resetObjectTransform(this); - } - if (options.withoutShadow) { - this.shadow = null; - } - var el = fabric.util.createCanvasElement(), - // skip canvas zoom and calculate with setCoords now. - boundingRect = this.getBoundingRect(true, true), shadow = this.shadow, shadowOffset = { x: 0, y: 0 }, width, height; - if (shadow) { - var shadowBlur = shadow.blur; - var scaling = shadow.nonScaling - ? new Point(1, 1) - : this.getObjectScaling(); - // consider non scaling shadow. - shadowOffset.x = - 2 * Math.round(abs(shadow.offsetX) + shadowBlur) * abs(scaling.x); - shadowOffset.y = - 2 * Math.round(abs(shadow.offsetY) + shadowBlur) * abs(scaling.y); - } - width = boundingRect.width + shadowOffset.x; - height = boundingRect.height + shadowOffset.y; - // if the current width/height is not an integer - // we need to make it so. - el.width = Math.ceil(width); - el.height = Math.ceil(height); - var canvas = new fabric.StaticCanvas(el, { - enableRetinaScaling: false, - renderOnAddRemove: false, - skipOffscreen: false, - }); - if (options.format === 'jpeg') { - canvas.backgroundColor = '#fff'; - } - this.setPositionByOrigin(new Point(canvas.width / 2, canvas.height / 2), 'center', 'center'); - var originalCanvas = this.canvas; - canvas._objects = [this]; - this.set('canvas', canvas); - this.setCoords(); - var canvasEl = canvas.toCanvasElement(multiplier || 1, options); - this.set('canvas', originalCanvas); - this.shadow = originalShadow; - if (originalGroup) { - this.group = originalGroup; - } - this.set(origParams); - this.setCoords(); - // canvas.dispose will call image.dispose that will nullify the elements - // since this canvas is a simple element for the process, we remove references - // to objects in this way in order to avoid object trashing. - canvas._objects = []; - // since render has settled it is safe to destroy canvas - canvas.destroy(); - canvas = null; - return canvasEl; - }, - /** - * Converts an object into a data-url-like string - * @param {Object} options Options object - * @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png" - * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg. - * @param {Number} [options.multiplier=1] Multiplier to scale by - * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 - * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 - * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 - * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 - * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 - * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 - * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 - * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format - */ - toDataURL: function (options) { - options || (options = {}); - return fabric.util.toDataURL(this.toCanvasElement(options), options.format || 'png', options.quality || 1); - }, - /** - * Returns true if specified type is identical to the type of an instance - * @param {String} type Type to check against - * @return {Boolean} - */ - isType: function (type) { - return arguments.length > 1 - ? Array.from(arguments).includes(this.type) - : this.type === type; - }, - /** - * Returns complexity of an instance - * @return {Number} complexity of this instance (is 1 unless subclassed) - */ - complexity: function () { - return 1; - }, - /** - * Returns a JSON representation of an instance - * @return {Object} JSON - */ - toJSON: function () { - // delegate, not alias - return this.toObject(); - }, - /** - * Sets "angle" of an instance with centered rotation - * @param {Number} angle Angle value (in degrees) - * @return {fabric.Object} thisArg - * @chainable - */ - rotate: function (angle) { - var shouldCenterOrigin = (this.originX !== 'center' || this.originY !== 'center') && - this.centeredRotation; - if (shouldCenterOrigin) { - this._setOriginToCenter(); - } - this.set('angle', angle); - if (shouldCenterOrigin) { - this._resetOrigin(); - } - return this; - }, - /** - * Centers object horizontally on canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - centerH: function () { - this.canvas && this.canvas.centerObjectH(this); - return this; - }, - /** - * Centers object horizontally on current viewport of canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - viewportCenterH: function () { - this.canvas && this.canvas.viewportCenterObjectH(this); - return this; - }, - /** - * Centers object vertically on canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - centerV: function () { - this.canvas && this.canvas.centerObjectV(this); - return this; - }, - /** - * Centers object vertically on current viewport of canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - viewportCenterV: function () { - this.canvas && this.canvas.viewportCenterObjectV(this); - return this; - }, - /** - * Centers object vertically and horizontally on canvas to which is was added last - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - center: function () { - this.canvas && this.canvas.centerObject(this); - return this; - }, - /** - * Centers object on current viewport of canvas to which it was added last. - * You might need to call `setCoords` on an object after centering, to update controls area. - * @return {fabric.Object} thisArg - * @chainable - */ - viewportCenter: function () { - this.canvas && this.canvas.viewportCenterObject(this); - return this; - }, - /** - * This callback function is called by the parent group of an object every - * time a non-delegated property changes on the group. It is passed the key - * and value as parameters. Not adding in this function's signature to avoid - * Travis build error about unused variables. - */ - setOnGroup: function () { - // implemented by sub-classes, as needed. - }, - /** - * Sets canvas globalCompositeOperation for specific object - * custom composition operation for the particular object can be specified using globalCompositeOperation property - * @param {CanvasRenderingContext2D} ctx Rendering canvas context - */ - _setupCompositeOperation: function (ctx) { - if (this.globalCompositeOperation) { - ctx.globalCompositeOperation = this.globalCompositeOperation; - } - }, - /** - * cancel instance's running animations - * override if necessary to dispose artifacts such as `clipPath` - */ - dispose: function () { - // todo verify this. - // runningAnimations is always truthy - if (runningAnimations) { - runningAnimations.cancelByTarget(this); - } - }, - }); - fabric.util.createAccessors && fabric.util.createAccessors(fabric.Object); - extend(fabric.Object.prototype, fabric.Observable); + * Sets source of this color (where source is an array representation; ex: [200, 200, 100, 1]) + * @param {Array} source + */ + setSource: function(source) { + this._source = source; + }, + /** - * - * @param {Function} klass - * @param {object} object - * @param {object} [options] - * @param {string} [options.extraParam] property to pass as first argument to the constructor - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @returns {Promise} - */ - fabric.Object._fromObject = function (klass, object, _a = {}) { - var { extraParam } = _a, options = __rest(_a, ["extraParam"]); - return enlivenObjectEnlivables(clone(object, true), options).then((enlivedMap) => { - // from the resulting enlived options, extract options.extraParam to arg0 - // to avoid accidental overrides later - const _a = Object.assign(Object.assign({}, options), enlivedMap), _b = extraParam, arg0 = _a[_b], rest = __rest(_a, [typeof _b === "symbol" ? _b : _b + ""]); - return extraParam ? new klass(arg0, rest) : new klass(rest); - }); - }; + * Returns color representation in RGB format + * @return {String} ex: rgb(0-255,0-255,0-255) + */ + toRgb: function() { + var source = this.getSource(); + return 'rgb(' + source[0] + ',' + source[1] + ',' + source[2] + ')'; + }, + /** - * - * @static - * @memberOf fabric.Object - * @param {object} object - * @param {object} [options] - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @returns {Promise} - */ - fabric.Object.fromObject = function (object, options) { - return fabric.Object._fromObject(fabric.Object, object, options); - }; + * Returns color representation in RGBA format + * @return {String} ex: rgba(0-255,0-255,0-255,0-1) + */ + toRgba: function() { + var source = this.getSource(); + return 'rgba(' + source[0] + ',' + source[1] + ',' + source[2] + ',' + source[3] + ')'; + }, + /** - * Unique id used internally when creating SVG elements - * @static - * @memberOf fabric.Object - * @type Number + * Returns color representation in HSL format + * @return {String} ex: hsl(0-360,0%-100%,0%-100%) */ - fabric.Object.__uid = 0; -})(typeof exports !== 'undefined' ? exports : window); + toHsl: function() { + var source = this.getSource(), + hsl = this._rgbToHsl(source[0], source[1], source[2]); + + return 'hsl(' + hsl[0] + ',' + hsl[1] + '%,' + hsl[2] + '%)'; + }, -//@ts-nocheck -(function (global) { - var fabric = global.fabric, degreesToRadians = fabric.util.degreesToRadians, originXOffset = { - left: -0.5, - center: 0, - right: 0.5, - }, originYOffset = { - top: -0.5, - center: 0, - bottom: 0.5, - }; /** - * @typedef {number | 'left' | 'center' | 'right'} OriginX - * @typedef {number | 'top' | 'center' | 'bottom'} OriginY - */ - fabric.util.object.extend(fabric.Object.prototype, - /** @lends fabric.Object.prototype */ { - /** - * Resolves origin value relative to center - * @private - * @param {OriginX} originX - * @returns number - */ - resolveOriginX: function (originX) { - return typeof originX === 'string' - ? originXOffset[originX] - : originX - 0.5; - }, - /** - * Resolves origin value relative to center - * @private - * @param {OriginY} originY - * @returns number - */ - resolveOriginY: function (originY) { - return typeof originY === 'string' - ? originYOffset[originY] - : originY - 0.5; - }, - /** - * Translates the coordinates from a set of origin to another (based on the object's dimensions) - * @param {Point} point The point which corresponds to the originX and originY params - * @param {OriginX} fromOriginX Horizontal origin: 'left', 'center' or 'right' - * @param {OriginY} fromOriginY Vertical origin: 'top', 'center' or 'bottom' - * @param {OriginX} toOriginX Horizontal origin: 'left', 'center' or 'right' - * @param {OriginY} toOriginY Vertical origin: 'top', 'center' or 'bottom' - * @return {Point} - */ - translateToGivenOrigin: function (point, fromOriginX, fromOriginY, toOriginX, toOriginY) { - var x = point.x, y = point.y, dim, offsetX = this.resolveOriginX(toOriginX) - this.resolveOriginX(fromOriginX), offsetY = this.resolveOriginY(toOriginY) - this.resolveOriginY(fromOriginY); - if (offsetX || offsetY) { - dim = this._getTransformedDimensions(); - x = point.x + offsetX * dim.x; - y = point.y + offsetY * dim.y; - } - return new Point(x, y); - }, - /** - * Translates the coordinates from origin to center coordinates (based on the object's dimensions) - * @param {Point} point The point which corresponds to the originX and originY params - * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' - * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {Point} - */ - translateToCenterPoint: function (point, originX, originY) { - var p = this.translateToGivenOrigin(point, originX, originY, 'center', 'center'); - if (this.angle) { - return fabric.util.rotatePoint(p, point, degreesToRadians(this.angle)); - } - return p; - }, - /** - * Translates the coordinates from center to origin coordinates (based on the object's dimensions) - * @param {Point} center The point which corresponds to center of the object - * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' - * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {Point} - */ - translateToOriginPoint: function (center, originX, originY) { - var p = this.translateToGivenOrigin(center, 'center', 'center', originX, originY); - if (this.angle) { - return fabric.util.rotatePoint(p, center, degreesToRadians(this.angle)); - } - return p; - }, - /** - * Returns the center coordinates of the object relative to canvas - * @return {Point} - */ - getCenterPoint: function () { - var relCenter = this.getRelativeCenterPoint(); - return this.group - ? fabric.util.transformPoint(relCenter, this.group.calcTransformMatrix()) - : relCenter; - }, - /** - * Returns the center coordinates of the object relative to it's containing group or null - * @return {Point|null} point or null of object has no parent group - */ - getCenterPointRelativeToParent: function () { - return this.group ? this.getRelativeCenterPoint() : null; - }, - /** - * Returns the center coordinates of the object relative to it's parent - * @return {Point} - */ - getRelativeCenterPoint: function () { - return this.translateToCenterPoint(new Point(this.left, this.top), this.originX, this.originY); - }, - /** - * Returns the coordinates of the object based on center coordinates - * @param {Point} point The point which corresponds to the originX and originY params - * @return {Point} - */ - // getOriginPoint: function(center) { - // return this.translateToOriginPoint(center, this.originX, this.originY); - // }, - /** - * Returns the coordinates of the object as if it has a different origin - * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' - * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {Point} - */ - getPointByOrigin: function (originX, originY) { - var center = this.getRelativeCenterPoint(); - return this.translateToOriginPoint(center, originX, originY); - }, - /** - * Returns the normalized point (rotated relative to center) in local coordinates - * @param {Point} point The point relative to instance coordinate system - * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' - * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {Point} - */ - normalizePoint: function (point, originX, originY) { - var center = this.getRelativeCenterPoint(), p, p2; - if (typeof originX !== 'undefined' && typeof originY !== 'undefined') { - p = this.translateToGivenOrigin(center, 'center', 'center', originX, originY); - } - else { - p = new Point(this.left, this.top); - } - p2 = new Point(point.x, point.y); - if (this.angle) { - p2 = fabric.util.rotatePoint(p2, center, -degreesToRadians(this.angle)); - } - return p2.subtract(p); - }, - /** - * Returns coordinates of a pointer relative to object's top left corner in object's plane - * @param {Event} e Event to operate upon - * @param {Object} [pointer] Pointer to operate upon (instead of event) - * @return {Object} Coordinates of a pointer (x, y) - */ - getLocalPointer: function (e, pointer) { - pointer = pointer || this.canvas.getPointer(e); - return fabric.util - .transformPoint(new Point(pointer.x, pointer.y), fabric.util.invertTransform(this.calcTransformMatrix())) - .add(new Point(this.width / 2, this.height / 2)); - }, - /** - * Returns the point in global coordinates - * @param {Point} The point relative to the local coordinate system - * @return {Point} - */ - // toGlobalPoint: function(point) { - // return fabric.util.rotatePoint(point, this.getCenterPoint(), degreesToRadians(this.angle)).add(new Point(this.left, this.top)); - // }, - /** - * Sets the position of the object taking into consideration the object's origin - * @param {Point} pos The new position of the object - * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right' - * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom' - * @return {void} - */ - setPositionByOrigin: function (pos, originX, originY) { - var center = this.translateToCenterPoint(pos, originX, originY), position = this.translateToOriginPoint(center, this.originX, this.originY); - this.set('left', position.x); - this.set('top', position.y); - }, - /** - * @param {String} to One of 'left', 'center', 'right' - */ - adjustPosition: function (to) { - var angle = degreesToRadians(this.angle), hypotFull = this.getScaledWidth(), xFull = fabric.util.cos(angle) * hypotFull, yFull = fabric.util.sin(angle) * hypotFull, offsetFrom, offsetTo; - //TODO: this function does not consider mixed situation like top, center. - if (typeof this.originX === 'string') { - offsetFrom = originXOffset[this.originX]; - } - else { - offsetFrom = this.originX - 0.5; - } - if (typeof to === 'string') { - offsetTo = originXOffset[to]; - } - else { - offsetTo = to - 0.5; - } - this.left += xFull * (offsetTo - offsetFrom); - this.top += yFull * (offsetTo - offsetFrom); - this.setCoords(); - this.originX = to; - }, - /** - * Sets the origin/position of the object to it's center point - * @private - * @return {void} - */ - _setOriginToCenter: function () { - this._originalOriginX = this.originX; - this._originalOriginY = this.originY; - var center = this.getRelativeCenterPoint(); - this.originX = 'center'; - this.originY = 'center'; - this.left = center.x; - this.top = center.y; - }, - /** - * Resets the origin/position of the object to it's original origin - * @private - * @return {void} - */ - _resetOrigin: function () { - var originPoint = this.translateToOriginPoint(this.getRelativeCenterPoint(), this._originalOriginX, this._originalOriginY); - this.originX = this._originalOriginX; - this.originY = this._originalOriginY; - this.left = originPoint.x; - this.top = originPoint.y; - this._originalOriginX = null; - this._originalOriginY = null; - }, - /** - * @private - */ - _getLeftTopCoords: function () { - return this.translateToOriginPoint(this.getRelativeCenterPoint(), 'left', 'top'); - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - function arrayFromCoords(coords) { - return [ - new Point(coords.tl.x, coords.tl.y), - new Point(coords.tr.x, coords.tr.y), - new Point(coords.br.x, coords.br.y), - new Point(coords.bl.x, coords.bl.y), - ]; - } - var fabric = global.fabric, util = fabric.util, degreesToRadians = util.degreesToRadians, multiplyMatrices = util.multiplyTransformMatrices, transformPoint = util.transformPoint; - util.object.extend(fabric.Object.prototype, - /** @lends fabric.Object.prototype */ { - /** - * Describe object's corner position in canvas element coordinates. - * properties are depending on control keys and padding the main controls. - * each property is an object with x, y and corner. - * The `corner` property contains in a similar manner the 4 points of the - * interactive area of the corner. - * The coordinates depends from the controls positionHandler and are used - * to draw and locate controls - * @memberOf fabric.Object.prototype - */ - oCoords: null, - /** - * Describe object's corner position in canvas object absolute coordinates - * properties are tl,tr,bl,br and describe the four main corner. - * each property is an object with x, y, instance of Fabric.Point. - * The coordinates depends from this properties: width, height, scaleX, scaleY - * skewX, skewY, angle, strokeWidth, top, left. - * Those coordinates are useful to understand where an object is. They get updated - * with oCoords but they do not need to be updated when zoom or panning change. - * The coordinates get updated with @method setCoords. - * You can calculate them without updating with @method calcACoords(); - * @memberOf fabric.Object.prototype - */ - aCoords: null, - /** - * Describe object's corner position in canvas element coordinates. - * includes padding. Used of object detection. - * set and refreshed with setCoords. - * @memberOf fabric.Object.prototype - */ - lineCoords: null, - /** - * storage for object transform matrix - */ - ownMatrixCache: null, - /** - * storage for object full transform matrix - */ - matrixCache: null, - /** - * custom controls interface - * controls are added by default_controls.js - */ - controls: {}, - /** - * @returns {number} x position according to object's {@link fabric.Object#originX} property in canvas coordinate plane - */ - getX: function () { - return this.getXY().x; - }, - /** - * @param {number} value x position according to object's {@link fabric.Object#originX} property in canvas coordinate plane - */ - setX: function (value) { - this.setXY(this.getXY().setX(value)); - }, - /** - * @returns {number} x position according to object's {@link fabric.Object#originX} property in parent's coordinate plane\ - * if parent is canvas then this property is identical to {@link fabric.Object#getX} - */ - getRelativeX: function () { - return this.left; - }, - /** - * @param {number} value x position according to object's {@link fabric.Object#originX} property in parent's coordinate plane\ - * if parent is canvas then this method is identical to {@link fabric.Object#setX} - */ - setRelativeX: function (value) { - this.left = value; - }, - /** - * @returns {number} y position according to object's {@link fabric.Object#originY} property in canvas coordinate plane - */ - getY: function () { - return this.getXY().y; - }, - /** - * @param {number} value y position according to object's {@link fabric.Object#originY} property in canvas coordinate plane - */ - setY: function (value) { - this.setXY(this.getXY().setY(value)); - }, - /** - * @returns {number} y position according to object's {@link fabric.Object#originY} property in parent's coordinate plane\ - * if parent is canvas then this property is identical to {@link fabric.Object#getY} - */ - getRelativeY: function () { - return this.top; - }, - /** - * @param {number} value y position according to object's {@link fabric.Object#originY} property in parent's coordinate plane\ - * if parent is canvas then this property is identical to {@link fabric.Object#setY} - */ - setRelativeY: function (value) { - this.top = value; - }, - /** - * @returns {number} x position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in canvas coordinate plane - */ - getXY: function () { - var relativePosition = this.getRelativeXY(); - return this.group - ? fabric.util.transformPoint(relativePosition, this.group.calcTransformMatrix()) - : relativePosition; - }, - /** - * Set an object position to a particular point, the point is intended in absolute ( canvas ) coordinate. - * You can specify {@link fabric.Object#originX} and {@link fabric.Object#originY} values, - * that otherwise are the object's current values. - * @example Set object's bottom left corner to point (5,5) on canvas - * object.setXY(new Point(5, 5), 'left', 'bottom'). - * @param {Point} point position in canvas coordinate plane - * @param {'left'|'center'|'right'|number} [originX] Horizontal origin: 'left', 'center' or 'right' - * @param {'top'|'center'|'bottom'|number} [originY] Vertical origin: 'top', 'center' or 'bottom' - */ - setXY: function (point, originX, originY) { - if (this.group) { - point = fabric.util.transformPoint(point, fabric.util.invertTransform(this.group.calcTransformMatrix())); - } - this.setRelativeXY(point, originX, originY); - }, - /** - * @returns {number} x position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in parent's coordinate plane - */ - getRelativeXY: function () { - return new Point(this.left, this.top); - }, - /** - * As {@link fabric.Object#setXY}, but in current parent's coordinate plane ( the current group if any or the canvas) - * @param {Point} point position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in parent's coordinate plane - * @param {'left'|'center'|'right'|number} [originX] Horizontal origin: 'left', 'center' or 'right' - * @param {'top'|'center'|'bottom'|number} [originY] Vertical origin: 'top', 'center' or 'bottom' - */ - setRelativeXY: function (point, originX, originY) { - this.setPositionByOrigin(point, originX || this.originX, originY || this.originY); - }, - /** - * return correct set of coordinates for intersection - * this will return either aCoords or lineCoords. - * @param {Boolean} absolute will return aCoords if true or lineCoords - * @return {Object} {tl, tr, br, bl} points - */ - _getCoords: function (absolute, calculate) { - if (calculate) { - return absolute ? this.calcACoords() : this.calcLineCoords(); - } - if (!this.aCoords || !this.lineCoords) { - this.setCoords(true); - } - return absolute ? this.aCoords : this.lineCoords; - }, - /** - * return correct set of coordinates for intersection - * this will return either aCoords or lineCoords. - * The coords are returned in an array. - * @return {Array} [tl, tr, br, bl] of points - */ - getCoords: function (absolute, calculate) { - var coords = arrayFromCoords(this._getCoords(absolute, calculate)); - if (this.group) { - var t = this.group.calcTransformMatrix(); - return coords.map(function (p) { - return util.transformPoint(p, t); - }); - } - return coords; - }, - /** - * Checks if object intersects with an area formed by 2 points - * @param {Object} pointTL top-left point of area - * @param {Object} pointBR bottom-right point of area - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object intersects with an area formed by 2 points - */ - intersectsWithRect: function (pointTL, pointBR, absolute, calculate) { - var coords = this.getCoords(absolute, calculate), intersection = fabric.Intersection.intersectPolygonRectangle(coords, pointTL, pointBR); - return intersection.status === 'Intersection'; - }, - /** - * Checks if object intersects with another object - * @param {Object} other Object to test - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object intersects with another object - */ - intersectsWithObject: function (other, absolute, calculate) { - var intersection = Intersection.intersectPolygonPolygon(this.getCoords(absolute, calculate), other.getCoords(absolute, calculate)); - return (intersection.status === 'Intersection' || - intersection.status === 'Coincident' || - other.isContainedWithinObject(this, absolute, calculate) || - this.isContainedWithinObject(other, absolute, calculate)); - }, - /** - * Checks if object is fully contained within area of another object - * @param {Object} other Object to test - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object is fully contained within area of another object - */ - isContainedWithinObject: function (other, absolute, calculate) { - var points = this.getCoords(absolute, calculate), otherCoords = absolute ? other.aCoords : other.lineCoords, i = 0, lines = other._getImageLines(otherCoords); - for (; i < 4; i++) { - if (!other.containsPoint(points[i], lines)) { - return false; - } - } - return true; - }, - /** - * Checks if object is fully contained within area formed by 2 points - * @param {Object} pointTL top-left point of area - * @param {Object} pointBR bottom-right point of area - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object is fully contained within area formed by 2 points - */ - isContainedWithinRect: function (pointTL, pointBR, absolute, calculate) { - var boundingRect = this.getBoundingRect(absolute, calculate); - return (boundingRect.left >= pointTL.x && - boundingRect.left + boundingRect.width <= pointBR.x && - boundingRect.top >= pointTL.y && - boundingRect.top + boundingRect.height <= pointBR.y); - }, - /** - * Checks if point is inside the object - * @param {Point} point Point to check against - * @param {Object} [lines] object returned from @method _getImageLines - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if point is inside the object - */ - containsPoint: function (point, lines, absolute, calculate) { - var coords = this._getCoords(absolute, calculate), lines = lines || this._getImageLines(coords), xPoints = this._findCrossPoints(point, lines); - // if xPoints is odd then point is inside the object - return xPoints !== 0 && xPoints % 2 === 1; - }, - /** - * Checks if object is contained within the canvas with current viewportTransform - * the check is done stopping at first point that appears on screen - * @param {Boolean} [calculate] use coordinates of current position instead of .aCoords - * @return {Boolean} true if object is fully or partially contained within canvas - */ - isOnScreen: function (calculate) { - if (!this.canvas) { - return false; - } - var pointTL = this.canvas.vptCoords.tl, pointBR = this.canvas.vptCoords.br; - var points = this.getCoords(true, calculate); - // if some point is on screen, the object is on screen. - if (points.some(function (point) { - return (point.x <= pointBR.x && - point.x >= pointTL.x && - point.y <= pointBR.y && - point.y >= pointTL.y); - })) { - return true; - } - // no points on screen, check intersection with absolute coordinates - if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) { - return true; - } - return this._containsCenterOfCanvas(pointTL, pointBR, calculate); - }, - /** - * Checks if the object contains the midpoint between canvas extremities - * Does not make sense outside the context of isOnScreen and isPartiallyOnScreen - * @private - * @param {Fabric.Point} pointTL Top Left point - * @param {Fabric.Point} pointBR Top Right point - * @param {Boolean} calculate use coordinates of current position instead of .oCoords - * @return {Boolean} true if the object contains the point - */ - _containsCenterOfCanvas: function (pointTL, pointBR, calculate) { - // worst case scenario the object is so big that contains the screen - var centerPoint = { - x: (pointTL.x + pointBR.x) / 2, - y: (pointTL.y + pointBR.y) / 2, - }; - if (this.containsPoint(centerPoint, null, true, calculate)) { - return true; - } - return false; - }, - /** - * Checks if object is partially contained within the canvas with current viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords - * @return {Boolean} true if object is partially contained within canvas - */ - isPartiallyOnScreen: function (calculate) { - if (!this.canvas) { - return false; - } - var pointTL = this.canvas.vptCoords.tl, pointBR = this.canvas.vptCoords.br; - if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) { - return true; - } - var allPointsAreOutside = this.getCoords(true, calculate).every(function (point) { - return ((point.x >= pointBR.x || point.x <= pointTL.x) && - (point.y >= pointBR.y || point.y <= pointTL.y)); - }); - return (allPointsAreOutside && - this._containsCenterOfCanvas(pointTL, pointBR, calculate)); - }, - /** - * Method that returns an object with the object edges in it, given the coordinates of the corners - * @private - * @param {Object} oCoords Coordinates of the object corners - */ - _getImageLines: function (oCoords) { - var lines = { - topline: { - o: oCoords.tl, - d: oCoords.tr, - }, - rightline: { - o: oCoords.tr, - d: oCoords.br, - }, - bottomline: { - o: oCoords.br, - d: oCoords.bl, - }, - leftline: { - o: oCoords.bl, - d: oCoords.tl, - }, - }; - // // debugging - // if (this.canvas.contextTop) { - // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2); - // } - return lines; - }, - /** - * Helper method to determine how many cross points are between the 4 object edges - * and the horizontal line determined by a point on canvas - * @private - * @param {Point} point Point to check - * @param {Object} lines Coordinates of the object being evaluated - */ - // remove yi, not used but left code here just in case. - _findCrossPoints: function (point, lines) { - var b1, b2, a1, a2, xi, // yi, - xcount = 0, iLine; - for (var lineKey in lines) { - iLine = lines[lineKey]; - // optimisation 1: line below point. no cross - if (iLine.o.y < point.y && iLine.d.y < point.y) { - continue; - } - // optimisation 2: line above point. no cross - if (iLine.o.y >= point.y && iLine.d.y >= point.y) { - continue; - } - // optimisation 3: vertical line case - if (iLine.o.x === iLine.d.x && iLine.o.x >= point.x) { - xi = iLine.o.x; - // yi = point.y; - } - // calculate the intersection point - else { - b1 = 0; - b2 = (iLine.d.y - iLine.o.y) / (iLine.d.x - iLine.o.x); - a1 = point.y - b1 * point.x; - a2 = iLine.o.y - b2 * iLine.o.x; - xi = -(a1 - a2) / (b1 - b2); - // yi = a1 + b1 * xi; - } - // dont count xi < point.x cases - if (xi >= point.x) { - xcount += 1; - } - // optimisation 4: specific for square images - if (xcount === 2) { - break; - } - } - return xcount; - }, - /** - * Returns coordinates of object's bounding rectangle (left, top, width, height) - * the box is intended as aligned to axis of canvas. - * @param {Boolean} [absolute] use coordinates without viewportTransform - * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords / .aCoords - * @return {Object} Object with left, top, width, height properties - */ - getBoundingRect: function (absolute, calculate) { - var coords = this.getCoords(absolute, calculate); - return util.makeBoundingBoxFromPoints(coords); - }, - /** - * Returns width of an object's bounding box counting transformations - * before 2.0 it was named getWidth(); - * @return {Number} width value - */ - getScaledWidth: function () { - return this._getTransformedDimensions().x; - }, - /** - * Returns height of an object bounding box counting transformations - * before 2.0 it was named getHeight(); - * @return {Number} height value - */ - getScaledHeight: function () { - return this._getTransformedDimensions().y; - }, - /** - * Makes sure the scale is valid and modifies it if necessary - * @private - * @param {Number} value - * @return {Number} - */ - _constrainScale: function (value) { - if (Math.abs(value) < this.minScaleLimit) { - if (value < 0) { - return -this.minScaleLimit; - } - else { - return this.minScaleLimit; - } - } - else if (value === 0) { - return 0.0001; - } - return value; - }, - /** - * Scales an object (equally by x and y) - * @param {Number} value Scale factor - * @return {fabric.Object} thisArg - * @chainable - */ - scale: function (value) { - this._set('scaleX', value); - this._set('scaleY', value); - return this.setCoords(); - }, - /** - * Scales an object to a given width, with respect to bounding box (scaling by x/y equally) - * @param {Number} value New width value - * @param {Boolean} absolute ignore viewport - * @return {fabric.Object} thisArg - * @chainable - */ - scaleToWidth: function (value, absolute) { - // adjust to bounding rect factor so that rotated shapes would fit as well - var boundingRectFactor = this.getBoundingRect(absolute).width / this.getScaledWidth(); - return this.scale(value / this.width / boundingRectFactor); - }, - /** - * Scales an object to a given height, with respect to bounding box (scaling by x/y equally) - * @param {Number} value New height value - * @param {Boolean} absolute ignore viewport - * @return {fabric.Object} thisArg - * @chainable - */ - scaleToHeight: function (value, absolute) { - // adjust to bounding rect factor so that rotated shapes would fit as well - var boundingRectFactor = this.getBoundingRect(absolute).height / this.getScaledHeight(); - return this.scale(value / this.height / boundingRectFactor); - }, - calcLineCoords: function () { - var vpt = this.getViewportTransform(), padding = this.padding, angle = degreesToRadians(this.getTotalAngle()), cos = util.cos(angle), sin = util.sin(angle), cosP = cos * padding, sinP = sin * padding, cosPSinP = cosP + sinP, cosPMinusSinP = cosP - sinP, aCoords = this.calcACoords(); - var lineCoords = { - tl: transformPoint(aCoords.tl, vpt), - tr: transformPoint(aCoords.tr, vpt), - bl: transformPoint(aCoords.bl, vpt), - br: transformPoint(aCoords.br, vpt), - }; - if (padding) { - lineCoords.tl.x -= cosPMinusSinP; - lineCoords.tl.y -= cosPSinP; - lineCoords.tr.x += cosPSinP; - lineCoords.tr.y -= cosPMinusSinP; - lineCoords.bl.x -= cosPSinP; - lineCoords.bl.y += cosPMinusSinP; - lineCoords.br.x += cosPMinusSinP; - lineCoords.br.y += cosPSinP; - } - return lineCoords; - }, - calcOCoords: function () { - var vpt = this.getViewportTransform(), center = this.getCenterPoint(), tMatrix = [1, 0, 0, 1, center.x, center.y], rMatrix = util.calcRotateMatrix({ - angle: this.getTotalAngle() - (!!this.group && this.flipX ? 180 : 0), - }), positionMatrix = multiplyMatrices(tMatrix, rMatrix), startMatrix = multiplyMatrices(vpt, positionMatrix), finalMatrix = multiplyMatrices(startMatrix, [ - 1 / vpt[0], - 0, - 0, - 1 / vpt[3], - 0, - 0, - ]), transformOptions = this.group - ? fabric.util.qrDecompose(this.calcTransformMatrix()) - : undefined, dim = this._calculateCurrentDimensions(transformOptions), coords = {}; - this.forEachControl(function (control, key, fabricObject) { - coords[key] = control.positionHandler(dim, finalMatrix, fabricObject); - }); - // debug code - /* - var canvas = this.canvas; - setTimeout(function () { - if (!canvas) return; - canvas.contextTop.clearRect(0, 0, 700, 700); - canvas.contextTop.fillStyle = 'green'; - Object.keys(coords).forEach(function(key) { - var control = coords[key]; - canvas.contextTop.fillRect(control.x, control.y, 3, 3); - }); - }, 50); - */ - return coords; - }, - calcACoords: function () { - var rotateMatrix = util.calcRotateMatrix({ angle: this.angle }), center = this.getRelativeCenterPoint(), translateMatrix = [1, 0, 0, 1, center.x, center.y], finalMatrix = multiplyMatrices(translateMatrix, rotateMatrix), dim = this._getTransformedDimensions(), w = dim.x / 2, h = dim.y / 2; - return { - // corners - tl: transformPoint({ x: -w, y: -h }, finalMatrix), - tr: transformPoint({ x: w, y: -h }, finalMatrix), - bl: transformPoint({ x: -w, y: h }, finalMatrix), - br: transformPoint({ x: w, y: h }, finalMatrix), - }; - }, - /** - * Sets corner and controls position coordinates based on current angle, width and height, left and top. - * oCoords are used to find the corners - * aCoords are used to quickly find an object on the canvas - * lineCoords are used to quickly find object during pointer events. - * See {@link https://github.com/fabricjs/fabric.js/wiki/When-to-call-setCoords} and {@link http://fabricjs.com/fabric-gotchas} - * - * @param {Boolean} [skipCorners] skip calculation of oCoords. - * @return {fabric.Object} thisArg - * @chainable - */ - setCoords: function (skipCorners) { - this.aCoords = this.calcACoords(); - // in case we are in a group, for how the inner group target check works, - // lineCoords are exactly aCoords. Since the vpt gets absorbed by the normalized pointer. - this.lineCoords = this.group ? this.aCoords : this.calcLineCoords(); - if (skipCorners) { - return this; - } - // set coordinates of the draggable boxes in the corners used to scale/rotate the image - this.oCoords = this.calcOCoords(); - this._setCornerCoords && this._setCornerCoords(); - return this; - }, - transformMatrixKey: function (skipGroup) { - var sep = '_', prefix = ''; - if (!skipGroup && this.group) { - prefix = this.group.transformMatrixKey(skipGroup) + sep; - } - return (prefix + - this.top + - sep + - this.left + - sep + - this.scaleX + - sep + - this.scaleY + - sep + - this.skewX + - sep + - this.skewY + - sep + - this.angle + - sep + - this.originX + - sep + - this.originY + - sep + - this.width + - sep + - this.height + - sep + - this.strokeWidth + - this.flipX + - this.flipY); - }, - /** - * calculate transform matrix that represents the current transformations from the - * object's properties. - * @param {Boolean} [skipGroup] return transform matrix for object not counting parent transformations - * There are some situation in which this is useful to avoid the fake rotation. - * @return {Array} transform matrix for the object - */ - calcTransformMatrix: function (skipGroup) { - var matrix = this.calcOwnMatrix(); - if (skipGroup || !this.group) { - return matrix; - } - var key = this.transformMatrixKey(skipGroup), cache = this.matrixCache || (this.matrixCache = {}); - if (cache.key === key) { - return cache.value; - } - if (this.group) { - matrix = multiplyMatrices(this.group.calcTransformMatrix(false), matrix); - } - cache.key = key; - cache.value = matrix; - return matrix; - }, - /** - * calculate transform matrix that represents the current transformations from the - * object's properties, this matrix does not include the group transformation - * @return {Array} transform matrix for the object - */ - calcOwnMatrix: function () { - var key = this.transformMatrixKey(true), cache = this.ownMatrixCache || (this.ownMatrixCache = {}); - if (cache.key === key) { - return cache.value; - } - var center = this.getRelativeCenterPoint(), options = { - angle: this.angle, - translateX: center.x, - translateY: center.y, - scaleX: this.scaleX, - scaleY: this.scaleY, - skewX: this.skewX, - skewY: this.skewY, - flipX: this.flipX, - flipY: this.flipY, - }; - cache.key = key; - cache.value = util.composeMatrix(options); - return cache.value; - }, - /** - * Calculate object dimensions from its properties - * @private - * @returns {Point} dimensions - */ - _getNonTransformedDimensions: function () { - return new Point(this.width, this.height).scalarAdd(this.strokeWidth); - }, - /** - * Calculate object bounding box dimensions from its properties scale, skew. - * @param {Object} [options] - * @param {Number} [options.scaleX] - * @param {Number} [options.scaleY] - * @param {Number} [options.skewX] - * @param {Number} [options.skewY] - * @private - * @returns {Point} dimensions - */ - _getTransformedDimensions: function (options) { - options = Object.assign({ - scaleX: this.scaleX, - scaleY: this.scaleY, - skewX: this.skewX, - skewY: this.skewY, - width: this.width, - height: this.height, - strokeWidth: this.strokeWidth, - }, options || {}); - // stroke is applied before/after transformations are applied according to `strokeUniform` - var preScalingStrokeValue, postScalingStrokeValue, strokeWidth = options.strokeWidth; - if (this.strokeUniform) { - preScalingStrokeValue = 0; - postScalingStrokeValue = strokeWidth; - } - else { - preScalingStrokeValue = strokeWidth; - postScalingStrokeValue = 0; - } - var dimX = options.width + preScalingStrokeValue, dimY = options.height + preScalingStrokeValue, finalDimensions, noSkew = options.skewX === 0 && options.skewY === 0; - if (noSkew) { - finalDimensions = new Point(dimX * options.scaleX, dimY * options.scaleY); - } - else { - var bbox = util.sizeAfterTransform(dimX, dimY, options); - finalDimensions = new Point(bbox.x, bbox.y); - } - return finalDimensions.scalarAdd(postScalingStrokeValue); - }, - /** - * Calculate object dimensions for controls box, including padding and canvas zoom. - * and active selection - * @private - * @param {object} [options] transform options - * @returns {Point} dimensions - */ - _calculateCurrentDimensions: function (options) { - var vpt = this.getViewportTransform(), dim = this._getTransformedDimensions(options), p = transformPoint(dim, vpt, true); - return p.scalarAdd(2 * this.padding); - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.Object.prototype, - /** @lends fabric.Object.prototype */ { - /** - * Checks if object is decendant of target - * Should be used instead of @link {fabric.Collection.contains} for performance reasons - * @param {fabric.Object|fabric.StaticCanvas} target - * @returns {boolean} - */ - isDescendantOf: function (target) { - var parent = this.group || this.canvas; - while (parent) { - if (target === parent) { - return true; - } - else if (parent instanceof fabric.StaticCanvas) { - // happens after all parents were traversed through without a match - return false; - } - parent = parent.group || parent.canvas; - } - return false; - }, - /** - * - * @typedef {fabric.Object[] | [...fabric.Object[], fabric.StaticCanvas]} Ancestors - * - * @param {boolean} [strict] returns only ancestors that are objects (without canvas) - * @returns {Ancestors} ancestors from bottom to top - */ - getAncestors: function (strict) { - var ancestors = []; - var parent = this.group || (strict ? undefined : this.canvas); - while (parent) { - ancestors.push(parent); - parent = parent.group || (strict ? undefined : parent.canvas); - } - return ancestors; - }, - /** - * Returns an object that represent the ancestry situation. - * - * @typedef {object} AncestryComparison - * @property {Ancestors} common ancestors of `this` and `other` (may include `this` | `other`) - * @property {Ancestors} fork ancestors that are of `this` only - * @property {Ancestors} otherFork ancestors that are of `other` only - * - * @param {fabric.Object} other - * @param {boolean} [strict] finds only ancestors that are objects (without canvas) - * @returns {AncestryComparison | undefined} - * - */ - findCommonAncestors: function (other, strict) { - if (this === other) { - return { - fork: [], - otherFork: [], - common: [this].concat(this.getAncestors(strict)), - }; - } - else if (!other) { - // meh, warn and inform, and not my issue. - // the argument is NOT optional, we can't end up here. - return undefined; - } - var ancestors = this.getAncestors(strict); - var otherAncestors = other.getAncestors(strict); - // if `this` has no ancestors and `this` is top ancestor of `other` we must handle the following case - if (ancestors.length === 0 && - otherAncestors.length > 0 && - this === otherAncestors[otherAncestors.length - 1]) { - return { - fork: [], - otherFork: [other].concat(otherAncestors.slice(0, otherAncestors.length - 1)), - common: [this], - }; - } - // compare ancestors - for (var i = 0, ancestor; i < ancestors.length; i++) { - ancestor = ancestors[i]; - if (ancestor === other) { - return { - fork: [this].concat(ancestors.slice(0, i)), - otherFork: [], - common: ancestors.slice(i), - }; - } - for (var j = 0; j < otherAncestors.length; j++) { - if (this === otherAncestors[j]) { - return { - fork: [], - otherFork: [other].concat(otherAncestors.slice(0, j)), - common: [this].concat(ancestors), - }; - } - if (ancestor === otherAncestors[j]) { - return { - fork: [this].concat(ancestors.slice(0, i)), - otherFork: [other].concat(otherAncestors.slice(0, j)), - common: ancestors.slice(i), - }; - } - } - } - // nothing shared - return { - fork: [this].concat(ancestors), - otherFork: [other].concat(otherAncestors), - common: [], - }; - }, - /** - * - * @param {fabric.Object} other - * @param {boolean} [strict] checks only ancestors that are objects (without canvas) - * @returns {boolean} - */ - hasCommonAncestors: function (other, strict) { - var commonAncestors = this.findCommonAncestors(other, strict); - return commonAncestors && !!commonAncestors.ancestors.length; - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.Object.prototype, - /** @lends fabric.Object.prototype */ { - /** - * Moves an object to the bottom of the stack of drawn objects - * @return {fabric.Object} thisArg - * @chainable - */ - sendToBack: function () { - if (this.group) { - fabric.StaticCanvas.prototype.sendToBack.call(this.group, this); - } - else if (this.canvas) { - this.canvas.sendToBack(this); - } - return this; - }, - /** - * Moves an object to the top of the stack of drawn objects - * @return {fabric.Object} thisArg - * @chainable - */ - bringToFront: function () { - if (this.group) { - fabric.StaticCanvas.prototype.bringToFront.call(this.group, this); - } - else if (this.canvas) { - this.canvas.bringToFront(this); - } - return this; - }, - /** - * Moves an object down in stack of drawn objects - * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object - * @return {fabric.Object} thisArg - * @chainable - */ - sendBackwards: function (intersecting) { - if (this.group) { - fabric.StaticCanvas.prototype.sendBackwards.call(this.group, this, intersecting); - } - else if (this.canvas) { - this.canvas.sendBackwards(this, intersecting); - } - return this; - }, - /** - * Moves an object up in stack of drawn objects - * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object - * @return {fabric.Object} thisArg - * @chainable - */ - bringForward: function (intersecting) { - if (this.group) { - fabric.StaticCanvas.prototype.bringForward.call(this.group, this, intersecting); - } - else if (this.canvas) { - this.canvas.bringForward(this, intersecting); - } - return this; - }, - /** - * Moves an object to specified level in stack of drawn objects - * @param {Number} index New position of object - * @return {fabric.Object} thisArg - * @chainable - */ - moveTo: function (index) { - if (this.group && this.group.type !== 'activeSelection') { - fabric.StaticCanvas.prototype.moveTo.call(this.group, this, index); - } - else if (this.canvas) { - this.canvas.moveTo(this, index); - } - return this; - }, - /** - * - * @param {fabric.Object} other object to compare against - * @returns {boolean | undefined} if objects do not share a common ancestor or they are strictly equal it is impossible to determine which is in front of the other; in such cases the function returns `undefined` - */ - isInFrontOf: function (other) { - if (this === other) { - return undefined; - } - var ancestorData = this.findCommonAncestors(other); - if (!ancestorData) { - return undefined; - } - if (ancestorData.fork.includes(other)) { - return true; - } - if (ancestorData.otherFork.includes(this)) { - return false; - } - var firstCommonAncestor = ancestorData.common[0]; - if (!firstCommonAncestor) { - return undefined; - } - var headOfFork = ancestorData.fork.pop(), headOfOtherFork = ancestorData.otherFork.pop(), thisIndex = firstCommonAncestor._objects.indexOf(headOfFork), otherIndex = firstCommonAncestor._objects.indexOf(headOfOtherFork); - return thisIndex > -1 && thisIndex > otherIndex; - }, - }); -})(typeof exports !== 'undefined' ? exports : window); + * Returns color representation in HSLA format + * @return {String} ex: hsla(0-360,0%-100%,0%-100%,0-1) + */ + toHsla: function() { + var source = this.getSource(), + hsl = this._rgbToHsl(source[0], source[1], source[2]); -//@ts-nocheck -/* _TO_SVG_START_ */ -(function (global) { - var fabric = global.fabric; - function getSvgColorString(prop, value) { - if (!value) { - return prop + ': none; '; - } - else if (value.toLive) { - return prop + ': url(#SVGID_' + value.id + '); '; - } - else { - var color = new Color(value), str = prop + ': ' + color.toRgb() + '; ', opacity = color.getAlpha(); - if (opacity !== 1) { - //change the color in rgb + opacity - str += prop + '-opacity: ' + opacity.toString() + '; '; - } - return str; - } - } - var toFixed = (fabric = global.fabric), toFixed = fabric.util.toFixed; - fabric.util.object.extend(fabric.Object.prototype, - /** @lends fabric.Object.prototype */ { - /** - * Returns styles-string for svg-export - * @param {Boolean} skipShadow a boolean to skip shadow filter output - * @return {String} - */ - getSvgStyles: function (skipShadow) { - var fillRule = this.fillRule ? this.fillRule : 'nonzero', strokeWidth = this.strokeWidth ? this.strokeWidth : '0', strokeDashArray = this.strokeDashArray - ? this.strokeDashArray.join(' ') - : 'none', strokeDashOffset = this.strokeDashOffset - ? this.strokeDashOffset - : '0', strokeLineCap = this.strokeLineCap ? this.strokeLineCap : 'butt', strokeLineJoin = this.strokeLineJoin ? this.strokeLineJoin : 'miter', strokeMiterLimit = this.strokeMiterLimit - ? this.strokeMiterLimit - : '4', opacity = typeof this.opacity !== 'undefined' ? this.opacity : '1', visibility = this.visible ? '' : ' visibility: hidden;', filter = skipShadow ? '' : this.getSvgFilter(), fill = getSvgColorString('fill', this.fill), stroke = getSvgColorString('stroke', this.stroke); - return [ - stroke, - 'stroke-width: ', - strokeWidth, - '; ', - 'stroke-dasharray: ', - strokeDashArray, - '; ', - 'stroke-linecap: ', - strokeLineCap, - '; ', - 'stroke-dashoffset: ', - strokeDashOffset, - '; ', - 'stroke-linejoin: ', - strokeLineJoin, - '; ', - 'stroke-miterlimit: ', - strokeMiterLimit, - '; ', - fill, - 'fill-rule: ', - fillRule, - '; ', - 'opacity: ', - opacity, - ';', - filter, - visibility, - ].join(''); - }, - /** - * Returns styles-string for svg-export - * @param {Object} style the object from which to retrieve style properties - * @param {Boolean} useWhiteSpace a boolean to include an additional attribute in the style. - * @return {String} - */ - getSvgSpanStyles: function (style, useWhiteSpace) { - var term = '; '; - var fontFamily = style.fontFamily - ? 'font-family: ' + - (style.fontFamily.indexOf("'") === -1 && - style.fontFamily.indexOf('"') === -1 - ? "'" + style.fontFamily + "'" - : style.fontFamily) + - term - : ''; - var strokeWidth = style.strokeWidth - ? 'stroke-width: ' + style.strokeWidth + term - : '', fontFamily = fontFamily, fontSize = style.fontSize - ? 'font-size: ' + style.fontSize + 'px' + term - : '', fontStyle = style.fontStyle - ? 'font-style: ' + style.fontStyle + term - : '', fontWeight = style.fontWeight - ? 'font-weight: ' + style.fontWeight + term - : '', fill = style.fill ? getSvgColorString('fill', style.fill) : '', stroke = style.stroke - ? getSvgColorString('stroke', style.stroke) - : '', textDecoration = this.getSvgTextDecoration(style), deltaY = style.deltaY - ? 'baseline-shift: ' + -style.deltaY + '; ' - : ''; - if (textDecoration) { - textDecoration = 'text-decoration: ' + textDecoration + term; - } - return [ - stroke, - strokeWidth, - fontFamily, - fontSize, - fontStyle, - fontWeight, - textDecoration, - fill, - deltaY, - useWhiteSpace ? 'white-space: pre; ' : '', - ].join(''); - }, - /** - * Returns text-decoration property for svg-export - * @param {Object} style the object from which to retrieve style properties - * @return {String} - */ - getSvgTextDecoration: function (style) { - return ['overline', 'underline', 'line-through'] - .filter(function (decoration) { - return style[decoration.replace('-', '')]; - }) - .join(' '); - }, - /** - * Returns filter for svg shadow - * @return {String} - */ - getSvgFilter: function () { - return this.shadow ? 'filter: url(#SVGID_' + this.shadow.id + ');' : ''; - }, - /** - * Returns id attribute for svg output - * @return {String} - */ - getSvgCommons: function () { - return [ - this.id ? 'id="' + this.id + '" ' : '', - this.clipPath - ? 'clip-path="url(#' + this.clipPath.clipPathId + ')" ' - : '', - ].join(''); - }, - /** - * Returns transform-string for svg-export - * @param {Boolean} use the full transform or the single object one. - * @return {String} - */ - getSvgTransform: function (full, additionalTransform) { - var transform = full - ? this.calcTransformMatrix() - : this.calcOwnMatrix(), svgTransform = 'transform="' + fabric.util.matrixToSVG(transform); - return svgTransform + (additionalTransform || '') + '" '; - }, - _setSVGBg: function (textBgRects) { - if (this.backgroundColor) { - var NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; - textBgRects.push('\t\t\n'); - } - }, - /** - * Returns svg representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toSVG: function (reviver) { - return this._createBaseSVGMarkup(this._toSVG(reviver), { - reviver: reviver, - }); - }, - /** - * Returns svg clipPath representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toClipPathSVG: function (reviver) { - return ('\t' + - this._createBaseClipPathSVGMarkup(this._toSVG(reviver), { - reviver: reviver, - })); - }, - /** - * @private - */ - _createBaseClipPathSVGMarkup: function (objectMarkup, options) { - options = options || {}; - var reviver = options.reviver, additionalTransform = options.additionalTransform || '', commonPieces = [ - this.getSvgTransform(true, additionalTransform), - this.getSvgCommons(), - ].join(''), - // insert commons in the markup, style and svgCommons - index = objectMarkup.indexOf('COMMON_PARTS'); - objectMarkup[index] = commonPieces; - return reviver ? reviver(objectMarkup.join('')) : objectMarkup.join(''); - }, - /** - * @private - */ - _createBaseSVGMarkup: function (objectMarkup, options) { - options = options || {}; - var noStyle = options.noStyle, reviver = options.reviver, styleInfo = noStyle ? '' : 'style="' + this.getSvgStyles() + '" ', shadowInfo = options.withShadow - ? 'style="' + this.getSvgFilter() + '" ' - : '', clipPath = this.clipPath, vectorEffect = this.strokeUniform - ? 'vector-effect="non-scaling-stroke" ' - : '', absoluteClipPath = clipPath && clipPath.absolutePositioned, stroke = this.stroke, fill = this.fill, shadow = this.shadow, commonPieces, markup = [], clipPathMarkup, - // insert commons in the markup, style and svgCommons - index = objectMarkup.indexOf('COMMON_PARTS'), additionalTransform = options.additionalTransform; - if (clipPath) { - clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++; - clipPathMarkup = - '\n' + - clipPath.toClipPathSVG(reviver) + - '\n'; - } - if (absoluteClipPath) { - markup.push('\n'); - } - markup.push('\n'); - commonPieces = [ - styleInfo, - vectorEffect, - noStyle ? '' : this.addPaintOrder(), - ' ', - additionalTransform ? 'transform="' + additionalTransform + '" ' : '', - ].join(''); - objectMarkup[index] = commonPieces; - if (fill && fill.toLive) { - markup.push(fill.toSVG(this)); - } - if (stroke && stroke.toLive) { - markup.push(stroke.toSVG(this)); - } - if (shadow) { - markup.push(shadow.toSVG(this)); - } - if (clipPath) { - markup.push(clipPathMarkup); - } - markup.push(objectMarkup.join('')); - markup.push('\n'); - absoluteClipPath && markup.push('\n'); - return reviver ? reviver(markup.join('')) : markup.join(''); - }, - addPaintOrder: function () { - return this.paintFirst !== 'fill' - ? ' paint-order="' + this.paintFirst + '" ' - : ''; - }, - }); -})(typeof exports !== 'undefined' ? exports : window); -/* _TO_SVG_END_ */ + return 'hsla(' + hsl[0] + ',' + hsl[1] + '%,' + hsl[2] + '%,' + source[3] + ')'; + }, -//@ts-nocheck -(function (global) { - var fabric = global.fabric, extend = fabric.util.object.extend, originalSet = 'stateProperties'; - /* - Depends on `stateProperties` - */ - function saveProps(origin, destination, props) { - var tmpObj = {}, deep = true; - props.forEach(function (prop) { - tmpObj[prop] = origin[prop]; - }); - extend(origin[destination], tmpObj, deep); - } - function _isEqual(origValue, currentValue, firstPass) { - if (origValue === currentValue) { - // if the objects are identical, return - return true; - } - else if (Array.isArray(origValue)) { - if (!Array.isArray(currentValue) || - origValue.length !== currentValue.length) { - return false; - } - for (var i = 0, len = origValue.length; i < len; i++) { - if (!_isEqual(origValue[i], currentValue[i])) { - return false; - } - } - return true; - } - else if (origValue && typeof origValue === 'object') { - var keys = Object.keys(origValue), key; - if (!currentValue || - typeof currentValue !== 'object' || - (!firstPass && keys.length !== Object.keys(currentValue).length)) { - return false; - } - for (var i = 0, len = keys.length; i < len; i++) { - key = keys[i]; - // since clipPath is in the statefull cache list and the clipPath objects - // would be iterated as an object, this would lead to possible infinite recursion - // we do not want to compare those. - if (key === 'canvas' || key === 'group') { - continue; - } - if (!_isEqual(origValue[key], currentValue[key])) { - return false; - } - } - return true; - } - } - fabric.util.object.extend(fabric.Object.prototype, - /** @lends fabric.Object.prototype */ { - /** - * Returns true if object state (one of its state properties) was changed - * @param {String} [propertySet] optional name for the set of property we want to save - * @return {Boolean} true if instance' state has changed since `{@link fabric.Object#saveState}` was called - */ - hasStateChanged: function (propertySet) { - propertySet = propertySet || originalSet; - var dashedPropertySet = '_' + propertySet; - if (Object.keys(this[dashedPropertySet]).length < this[propertySet].length) { - return true; - } - return !_isEqual(this[dashedPropertySet], this, true); - }, - /** - * Saves state of an object - * @param {Object} [options] Object with additional `stateProperties` array to include when saving state - * @return {fabric.Object} thisArg - */ - saveState: function (options) { - var propertySet = (options && options.propertySet) || originalSet, destination = '_' + propertySet; - if (!this[destination]) { - return this.setupState(options); - } - saveProps(this, destination, this[propertySet]); - if (options && options.stateProperties) { - saveProps(this, destination, options.stateProperties); - } - return this; - }, - /** - * Setups state of an object - * @param {Object} [options] Object with additional `stateProperties` array to include when saving state - * @return {fabric.Object} thisArg - */ - setupState: function (options) { - options = options || {}; - var propertySet = options.propertySet || originalSet; - options.propertySet = propertySet; - this['_' + propertySet] = {}; - this.saveState(options); - return this; - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric, degreesToRadians = fabric.util.degreesToRadians; - fabric.util.object.extend(fabric.Object.prototype, - /** @lends fabric.Object.prototype */ { - /** - * Determines which corner has been clicked - * @private - * @param {Object} pointer The pointer indicating the mouse position - * @return {String|Boolean} corner code (tl, tr, bl, br, etc.), or false if nothing is found - */ - _findTargetCorner: function (pointer, forTouch) { - if (!this.hasControls || - !this.canvas || - this.canvas._activeObject !== this) { - return false; - } - var xPoints, lines, keys = Object.keys(this.oCoords), j = keys.length - 1, i; - this.__corner = 0; - // cycle in reverse order so we pick first the one on top - for (; j >= 0; j--) { - i = keys[j]; - if (!this.isControlVisible(i)) { - continue; - } - lines = this._getImageLines(forTouch ? this.oCoords[i].touchCorner : this.oCoords[i].corner); - // // debugging - // - // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2); - // - // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2); - // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2); - xPoints = this._findCrossPoints(pointer, lines); - if (xPoints !== 0 && xPoints % 2 === 1) { - this.__corner = i; - return i; - } - } - return false; - }, - /** - * Calls a function for each control. The function gets called, - * with the control, the object that is calling the iterator and the control's key - * @param {Function} fn function to iterate over the controls over - */ - forEachControl: function (fn) { - for (var i in this.controls) { - fn(this.controls[i], i, this); - } - }, - /** - * Sets the coordinates of the draggable boxes in the corners of - * the image used to scale/rotate it. - * note: if we would switch to ROUND corner area, all of this would disappear. - * everything would resolve to a single point and a pythagorean theorem for the distance - * @private - */ - _setCornerCoords: function () { - var coords = this.oCoords; - for (var control in coords) { - var controlObject = this.controls[control]; - coords[control].corner = controlObject.calcCornerCoords(this.angle, this.cornerSize, coords[control].x, coords[control].y, false); - coords[control].touchCorner = controlObject.calcCornerCoords(this.angle, this.touchCornerSize, coords[control].x, coords[control].y, true); - } - }, - /** - * Draws a colored layer behind the object, inside its selection borders. - * Requires public options: padding, selectionBackgroundColor - * this function is called when the context is transformed - * has checks to be skipped when the object is on a staticCanvas - * @param {CanvasRenderingContext2D} ctx Context to draw on - * @return {fabric.Object} thisArg - * @chainable - */ - drawSelectionBackground: function (ctx) { - if (!this.selectionBackgroundColor || - (this.canvas && !this.canvas.interactive) || - (this.canvas && this.canvas._activeObject !== this)) { - return this; - } - ctx.save(); - var center = this.getRelativeCenterPoint(), wh = this._calculateCurrentDimensions(), vpt = this.canvas.viewportTransform; - ctx.translate(center.x, center.y); - ctx.scale(1 / vpt[0], 1 / vpt[3]); - ctx.rotate(degreesToRadians(this.angle)); - ctx.fillStyle = this.selectionBackgroundColor; - ctx.fillRect(-wh.x / 2, -wh.y / 2, wh.x, wh.y); - ctx.restore(); - return this; - }, - /** - * @public override this function in order to customize the drawing of the control box, e.g. rounded corners, different border style. - * @param {CanvasRenderingContext2D} ctx ctx is rotated and translated so that (0,0) is at object's center - * @param {Point} size the control box size used - */ - strokeBorders: function (ctx, size) { - ctx.strokeRect(-size.x / 2, -size.y / 2, size.x, size.y); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to draw on - * @param {Point} size - * @param {Object} styleOverride object to override the object style - */ - _drawBorders: function (ctx, size, styleOverride) { - var options = Object.assign({ - hasControls: this.hasControls, - borderColor: this.borderColor, - borderDashArray: this.borderDashArray, - }, styleOverride || {}); - ctx.save(); - ctx.strokeStyle = options.borderColor; - this._setLineDash(ctx, options.borderDashArray); - this.strokeBorders(ctx, size); - options.hasControls && this.drawControlsConnectingLines(ctx, size); - ctx.restore(); - }, - /** - * Draws borders of an object's bounding box. - * Requires public properties: width, height - * Requires public options: padding, borderColor - * @param {CanvasRenderingContext2D} ctx Context to draw on - * @param {object} options object representing current object parameters - * @param {Object} [styleOverride] object to override the object style - * @return {fabric.Object} thisArg - * @chainable - */ - drawBorders: function (ctx, options, styleOverride) { - var size; - if ((styleOverride && styleOverride.forActiveSelection) || this.group) { - const bbox = fabric.util.sizeAfterTransform(this.width, this.height, options), stroke = (this.strokeUniform - ? new Point().scalarAdd(this.canvas.getZoom()) - : new Point(options.scaleX, options.scaleY)).scalarMultiply(this.strokeWidth); - size = bbox.add(stroke).scalarAdd(this.borderScaleFactor); - } - else { - size = this._calculateCurrentDimensions().scalarAdd(this.borderScaleFactor); - } - this._drawBorders(ctx, size, styleOverride); - return this; - }, - /** - * Draws lines from a borders of an object's bounding box to controls that have `withConnection` property set. - * Requires public properties: width, height - * Requires public options: padding, borderColor - * @param {CanvasRenderingContext2D} ctx Context to draw on - * @param {number} width object final width - * @param {number} height object final height - * @return {fabric.Object} thisArg - * @chainable - */ - drawControlsConnectingLines: function (ctx, size) { - var shouldStroke = false; - ctx.beginPath(); - this.forEachControl(function (control, key, fabricObject) { - // in this moment, the ctx is centered on the object. - // width and height of the above function are the size of the bbox. - if (control.withConnection && - control.getVisibility(fabricObject, key)) { - // reset movement for each control - shouldStroke = true; - ctx.moveTo(control.x * size.x, control.y * size.y); - ctx.lineTo(control.x * size.x + control.offsetX, control.y * size.y + control.offsetY); - } - }); - shouldStroke && ctx.stroke(); - return this; - }, - /** - * Draws corners of an object's bounding box. - * Requires public properties: width, height - * Requires public options: cornerSize, padding - * @param {CanvasRenderingContext2D} ctx Context to draw on - * @param {Object} styleOverride object to override the object style - * @return {fabric.Object} thisArg - * @chainable - */ - drawControls: function (ctx, styleOverride) { - styleOverride = styleOverride || {}; - ctx.save(); - var retinaScaling = this.canvas.getRetinaScaling(), p; - ctx.setTransform(retinaScaling, 0, 0, retinaScaling, 0, 0); - ctx.strokeStyle = ctx.fillStyle = - styleOverride.cornerColor || this.cornerColor; - if (!this.transparentCorners) { - ctx.strokeStyle = - styleOverride.cornerStrokeColor || this.cornerStrokeColor; - } - this._setLineDash(ctx, styleOverride.cornerDashArray || this.cornerDashArray); - this.setCoords(); - this.forEachControl(function (control, key, fabricObject) { - if (control.getVisibility(fabricObject, key)) { - p = fabricObject.oCoords[key]; - control.render(ctx, p.x, p.y, styleOverride, fabricObject); - } - }); - ctx.restore(); - return this; - }, - /** - * Returns true if the specified control is visible, false otherwise. - * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'. - * @returns {Boolean} true if the specified control is visible, false otherwise - */ - isControlVisible: function (controlKey) { - return (this.controls[controlKey] && - this.controls[controlKey].getVisibility(this, controlKey)); - }, - /** - * Sets the visibility of the specified control. - * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'. - * @param {Boolean} visible true to set the specified control visible, false otherwise - * @return {fabric.Object} thisArg - * @chainable - */ - setControlVisible: function (controlKey, visible) { - if (!this._controlsVisibility) { - this._controlsVisibility = {}; - } - this._controlsVisibility[controlKey] = visible; - return this; - }, - /** - * Sets the visibility state of object controls. - * @param {Object} [options] Options object - * @param {Boolean} [options.bl] true to enable the bottom-left control, false to disable it - * @param {Boolean} [options.br] true to enable the bottom-right control, false to disable it - * @param {Boolean} [options.mb] true to enable the middle-bottom control, false to disable it - * @param {Boolean} [options.ml] true to enable the middle-left control, false to disable it - * @param {Boolean} [options.mr] true to enable the middle-right control, false to disable it - * @param {Boolean} [options.mt] true to enable the middle-top control, false to disable it - * @param {Boolean} [options.tl] true to enable the top-left control, false to disable it - * @param {Boolean} [options.tr] true to enable the top-right control, false to disable it - * @param {Boolean} [options.mtr] true to enable the middle-top-rotate control, false to disable it - * @return {fabric.Object} thisArg - * @chainable - */ - setControlsVisibility: function (options) { - options || (options = {}); - for (var p in options) { - this.setControlVisible(p, options[p]); - } - return this; - }, - /** - * Clears the canvas.contextTop in a specific area that corresponds to the object's bounding box - * that is in the canvas.contextContainer. - * This function is used to clear pieces of contextTop where we render ephemeral effects on top of the object. - * Example: blinking cursror text selection, drag effects. - * // TODO: discuss swapping restoreManually with a renderCallback, but think of async issues - * @param {Boolean} [restoreManually] When true won't restore the context after clear, in order to draw something else. - * @return {CanvasRenderingContext2D|undefined} canvas.contextTop that is either still transformed - * with the object transformMatrix, or restored to neutral transform - */ - clearContextTop: function (restoreManually) { - if (!this.canvas || !this.canvas.contextTop) { - return; - } - var ctx = this.canvas.contextTop, v = this.canvas.viewportTransform; - if (!ctx) { - return; - } - ctx.save(); - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - this.transform(ctx); - // we add 4 pixel, to be sure to do not leave any pixel out - var width = this.width + 4, height = this.height + 4; - ctx.clearRect(-width / 2, -height / 2, width, height); - restoreManually || ctx.restore(); - return ctx; - }, - /** - * This callback function is called every time _discardActiveObject or _setActiveObject - * try to to deselect this object. If the function returns true, the process is cancelled - * @param {Object} [options] options sent from the upper functions - * @param {Event} [options.e] event if the process is generated by an event - */ - onDeselect: function () { - // implemented by sub-classes, as needed. - }, - /** - * This callback function is called every time _discardActiveObject or _setActiveObject - * try to to select this object. If the function returns true, the process is cancelled - * @param {Object} [options] options sent from the upper functions - * @param {Event} [options.e] event if the process is generated by an event - */ - onSelect: function () { - // implemented by sub-classes, as needed. - }, - /** - * Override to customize drag and drop behavior - * @public - * @param {DragEvent} e - * @returns {boolean} - */ - canDrop: function ( /* e */) { - return false; - }, - renderDragSourceEffect: function () { - // for subclasses - }, - renderDropTargetEffect: function ( /* e */) { - // for subclasses - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.StaticCanvas.prototype, - /** @lends fabric.StaticCanvas.prototype */ { - /** - * Animation duration (in ms) for fx* methods - * @type Number - * @default - */ - FX_DURATION: 500, - /** - * Centers object horizontally with animation. - * @param {fabric.Object} object Object to center - * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties - * @param {Function} [callbacks.onComplete] Invoked on completion - * @param {Function} [callbacks.onChange] Invoked on every step of animation - * @return {fabric.AnimationContext} context - */ - fxCenterObjectH: function (object, callbacks) { - callbacks = callbacks || {}; - var empty = function () { }, onComplete = callbacks.onComplete || empty, onChange = callbacks.onChange || empty, _this = this; - return fabric.util.animate({ - target: this, - startValue: object.getX(), - endValue: this.getCenterPoint().x, - duration: this.FX_DURATION, - onChange: function (value) { - object.setX(value); - _this.requestRenderAll(); - onChange(); - }, - onComplete: function () { - object.setCoords(); - onComplete(); - }, - }); - }, - /** - * Centers object vertically with animation. - * @param {fabric.Object} object Object to center - * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties - * @param {Function} [callbacks.onComplete] Invoked on completion - * @param {Function} [callbacks.onChange] Invoked on every step of animation - * @return {fabric.AnimationContext} context - */ - fxCenterObjectV: function (object, callbacks) { - callbacks = callbacks || {}; - var empty = function () { }, onComplete = callbacks.onComplete || empty, onChange = callbacks.onChange || empty, _this = this; - return fabric.util.animate({ - target: this, - startValue: object.getY(), - endValue: this.getCenterPoint().y, - duration: this.FX_DURATION, - onChange: function (value) { - object.setY(value); - _this.requestRenderAll(); - onChange(); - }, - onComplete: function () { - object.setCoords(); - onComplete(); - }, - }); - }, - /** - * Same as `fabric.Canvas#remove` but animated - * @param {fabric.Object} object Object to remove - * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties - * @param {Function} [callbacks.onComplete] Invoked on completion - * @param {Function} [callbacks.onChange] Invoked on every step of animation - * @return {fabric.AnimationContext} context - */ - fxRemove: function (object, callbacks) { - callbacks = callbacks || {}; - var empty = function () { }, onComplete = callbacks.onComplete || empty, onChange = callbacks.onChange || empty, _this = this; - return fabric.util.animate({ - target: this, - startValue: object.opacity, - endValue: 0, - duration: this.FX_DURATION, - onChange: function (value) { - object.set('opacity', value); - _this.requestRenderAll(); - onChange(); - }, - onComplete: function () { - _this.remove(object); - onComplete(); - }, - }); - }, - }); - fabric.util.object.extend(fabric.Object.prototype, - /** @lends fabric.Object.prototype */ { - /** - * Animates object's properties - * @param {String|Object} property Property to animate (if string) or properties to animate (if object) - * @param {Number|Object} value Value to animate property to (if string was given first) or options object - * @return {fabric.Object} thisArg - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#animation} - * @return {fabric.AnimationContext | fabric.AnimationContext[]} animation context (or an array if passed multiple properties) - * - * As object — multiple properties - * - * object.animate({ left: ..., top: ... }); - * object.animate({ left: ..., top: ... }, { duration: ... }); - * - * As string — one property - * - * object.animate('left', ...); - * object.animate('left', { duration: ... }); - * - */ - animate: function () { - if (arguments[0] && typeof arguments[0] === 'object') { - var propsToAnimate = [], prop, skipCallbacks, out = []; - for (prop in arguments[0]) { - propsToAnimate.push(prop); - } - for (var i = 0, len = propsToAnimate.length; i < len; i++) { - prop = propsToAnimate[i]; - skipCallbacks = i !== len - 1; - out.push(this._animate(prop, arguments[0][prop], arguments[1], skipCallbacks)); - } - return out; - } - else { - return this._animate.apply(this, arguments); - } - }, - /** - * @private - * @param {String} property Property to animate - * @param {String} to Value to animate to - * @param {Object} [options] Options object - * @param {Boolean} [skipCallbacks] When true, callbacks like onchange and oncomplete are not invoked - */ - _animate: function (property, to, options, skipCallbacks) { - var _this = this, propPair; - to = to.toString(); - options = Object.assign({}, options); - if (~property.indexOf('.')) { - propPair = property.split('.'); - } - var propIsColor = _this.colorProperties.indexOf(property) > -1 || - (propPair && _this.colorProperties.indexOf(propPair[1]) > -1); - var currentValue = propPair - ? this.get(propPair[0])[propPair[1]] - : this.get(property); - if (!('from' in options)) { - options.from = currentValue; - } - if (!propIsColor) { - if (~to.indexOf('=')) { - to = currentValue + parseFloat(to.replace('=', '')); - } - else { - to = parseFloat(to); - } - } - var _options = { - target: this, - startValue: options.from, - endValue: to, - byValue: options.by, - easing: options.easing, - duration: options.duration, - abort: options.abort && - function (value, valueProgress, timeProgress) { - return options.abort.call(_this, value, valueProgress, timeProgress); - }, - onChange: function (value, valueProgress, timeProgress) { - if (propPair) { - _this[propPair[0]][propPair[1]] = value; - } - else { - _this.set(property, value); - } - if (skipCallbacks) { - return; - } - options.onChange && - options.onChange(value, valueProgress, timeProgress); - }, - onComplete: function (value, valueProgress, timeProgress) { - if (skipCallbacks) { - return; - } - _this.setCoords(); - options.onComplete && - options.onComplete(value, valueProgress, timeProgress); - }, - }; - if (propIsColor) { - return fabric.util.animateColor(_options.startValue, _options.endValue, _options.duration, _options); - } - else { - return fabric.util.animate(_options); - } - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, clone = fabric.util.object.clone, coordProps = { x1: 1, x2: 1, y1: 1, y2: 1 }; - /** - * Line class - * @class fabric.Line - * @extends fabric.Object - * @see {@link fabric.Line#initialize} for constructor definition - */ - fabric.Line = fabric.util.createClass(fabric.Object, - /** @lends fabric.Line.prototype */ { - /** - * Type of an object - * @type String - * @default - */ - type: 'line', - /** - * x value or first line edge - * @type Number - * @default - */ - x1: 0, - /** - * y value or first line edge - * @type Number - * @default - */ - y1: 0, - /** - * x value or second line edge - * @type Number - * @default - */ - x2: 0, - /** - * y value or second line edge - * @type Number - * @default - */ - y2: 0, - cacheProperties: fabric.Object.prototype.cacheProperties.concat('x1', 'x2', 'y1', 'y2'), - /** - * Constructor - * @param {Array} [points] Array of points - * @param {Object} [options] Options object - * @return {fabric.Line} thisArg - */ - initialize: function (points, options) { - if (!points) { - points = [0, 0, 0, 0]; - } - this.callSuper('initialize', options); - this.set('x1', points[0]); - this.set('y1', points[1]); - this.set('x2', points[2]); - this.set('y2', points[3]); - this._setWidthHeight(options); - }, - /** - * @private - * @param {Object} [options] Options - */ - _setWidthHeight: function (options) { - options || (options = {}); - this.width = Math.abs(this.x2 - this.x1); - this.height = Math.abs(this.y2 - this.y1); - this.left = 'left' in options ? options.left : this._getLeftToOriginX(); - this.top = 'top' in options ? options.top : this._getTopToOriginY(); - }, - /** - * @private - * @param {String} key - * @param {*} value - */ - _set: function (key, value) { - this.callSuper('_set', key, value); - if (typeof coordProps[key] !== 'undefined') { - this._setWidthHeight(); - } - return this; - }, - /** - * @private - * @return {Number} leftToOriginX Distance from left edge of canvas to originX of Line. - */ - _getLeftToOriginX: makeEdgeToOriginGetter({ - // property names - origin: 'originX', - axis1: 'x1', - axis2: 'x2', - dimension: 'width', - }, { - // possible values of origin - nearest: 'left', - center: 'center', - farthest: 'right', - }), - /** - * @private - * @return {Number} topToOriginY Distance from top edge of canvas to originY of Line. - */ - _getTopToOriginY: makeEdgeToOriginGetter({ - // property names - origin: 'originY', - axis1: 'y1', - axis2: 'y2', - dimension: 'height', - }, { - // possible values of origin - nearest: 'top', - center: 'center', - farthest: 'bottom', - }), - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function (ctx) { - ctx.beginPath(); - var p = this.calcLinePoints(); - ctx.moveTo(p.x1, p.y1); - ctx.lineTo(p.x2, p.y2); - ctx.lineWidth = this.strokeWidth; - // TODO: test this - // make sure setting "fill" changes color of a line - // (by copying fillStyle to strokeStyle, since line is stroked, not filled) - var origStrokeStyle = ctx.strokeStyle; - ctx.strokeStyle = this.stroke || ctx.fillStyle; - this.stroke && this._renderStroke(ctx); - ctx.strokeStyle = origStrokeStyle; - }, - /** - * This function is an helper for svg import. it returns the center of the object in the svg - * untransformed coordinates - * @private - * @return {Object} center point from element coordinates - */ - _findCenterFromElement: function () { - return { - x: (this.x1 + this.x2) / 2, - y: (this.y1 + this.y2) / 2, - }; - }, - /** - * Returns object representation of an instance - * @method toObject - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function (propertiesToInclude) { - return extend(this.callSuper('toObject', propertiesToInclude), this.calcLinePoints()); - }, - /* - * Calculate object dimensions from its properties - * @private - */ - _getNonTransformedDimensions: function () { - var dim = this.callSuper('_getNonTransformedDimensions'); - if (this.strokeLineCap === 'butt') { - if (this.width === 0) { - dim.y -= this.strokeWidth; - } - if (this.height === 0) { - dim.x -= this.strokeWidth; - } - } - return dim; - }, - /** - * Recalculates line points given width and height - * @private - */ - calcLinePoints: function () { - var xMult = this.x1 <= this.x2 ? -1 : 1, yMult = this.y1 <= this.y2 ? -1 : 1, x1 = xMult * this.width * 0.5, y1 = yMult * this.height * 0.5, x2 = xMult * this.width * -0.5, y2 = yMult * this.height * -0.5; - return { - x1: x1, - x2: x2, - y1: y1, - y2: y2, - }; - }, - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function () { - var p = this.calcLinePoints(); - return [ - '\n', - ]; - }, - /* _TO_SVG_END_ */ - }); - /* _FROM_SVG_START_ */ /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Line.fromElement}) - * @static - * @memberOf fabric.Line - * @see http://www.w3.org/TR/SVG/shapes.html#LineElement + * Returns color representation in HEX format + * @return {String} ex: FF5555 */ - fabric.Line.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x1 y1 x2 y2'.split(' ')); + toHex: function() { + var source = this.getSource(), r, g, b; + + r = source[0].toString(16); + r = (r.length === 1) ? ('0' + r) : r; + + g = source[1].toString(16); + g = (g.length === 1) ? ('0' + g) : g; + + b = source[2].toString(16); + b = (b.length === 1) ? ('0' + b) : b; + + return r.toUpperCase() + g.toUpperCase() + b.toUpperCase(); + }, + /** - * Returns fabric.Line instance from an SVG element - * @static - * @memberOf fabric.Line - * @param {SVGElement} element Element to parse - * @param {Object} [options] Options object - * @param {Function} [callback] callback function invoked after parsing - */ - fabric.Line.fromElement = function (element, callback, options) { - options = options || {}; - var parsedAttributes = fabric.parseAttributes(element, fabric.Line.ATTRIBUTE_NAMES), points = [ - parsedAttributes.x1 || 0, - parsedAttributes.y1 || 0, - parsedAttributes.x2 || 0, - parsedAttributes.y2 || 0, - ]; - callback(new fabric.Line(points, extend(parsedAttributes, options))); - }; - /* _FROM_SVG_END_ */ - /** - * Returns fabric.Line instance from an object representation - * @static - * @memberOf fabric.Line - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Line.fromObject = function (object) { - var options = clone(object, true); - options.points = [object.x1, object.y1, object.x2, object.y2]; - return fabric.Object._fromObject(fabric.Line, options, { - extraParam: 'points', - }).then(function (fabricLine) { - delete fabricLine.points; - return fabricLine; - }); - }; - /** - * Produces a function that calculates distance from canvas edge to Line origin. - */ - function makeEdgeToOriginGetter(propertyNames, originValues) { - var origin = propertyNames.origin, axis1 = propertyNames.axis1, axis2 = propertyNames.axis2, dimension = propertyNames.dimension, nearest = originValues.nearest, center = originValues.center, farthest = originValues.farthest; - return function () { - switch (this.get(origin)) { - case nearest: - return Math.min(this.get(axis1), this.get(axis2)); - case center: - return (Math.min(this.get(axis1), this.get(axis2)) + - 0.5 * this.get(dimension)); - case farthest: - return Math.max(this.get(axis1), this.get(axis2)); - } - }; - } -})(typeof exports !== 'undefined' ? exports : window); - -const degreesToRadians = fabric$1.util.degreesToRadians; -/** - * Circle class - * @class Circle - * @extends fabric.Object - * @see {@link Circle#initialize} for constructor definition - */ -const Circle$1 = fabric$1.util.createClass(fabric$1.Object, -/** @lends Circle.prototype */ { - /** - * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged}) - * as well as for history (undo/redo) purposes - * @type Array - */ - stateProperties: fabric$1.Object.prototype.stateProperties.concat('radius', 'startAngle', 'endAngle'), - /** - * Type of an object - * @type String - * @default - */ - type: 'circle', - /** - * Radius of this circle - * @type Number - * @default - */ - radius: 0, - /** - * degrees of start of the circle. - * probably will change to degrees in next major version - * @type Number 0 - 359 - * @default 0 - */ - startAngle: 0, - /** - * End angle of the circle - * probably will change to degrees in next major version - * @type Number 1 - 360 - * @default 360 - */ - endAngle: 360, - cacheProperties: fabric$1.Object.prototype.cacheProperties.concat('radius', 'startAngle', 'endAngle'), - /** - * @private - * @param {String} key - * @param {*} value - * @return {Circle} thisArg - */ - _set: function (key, value) { - this.callSuper('_set', key, value); - if (key === 'radius') { - this.setRadius(value); - } - return this; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx context to render on + * Returns color representation in HEXA format + * @return {String} ex: FF5555CC */ - _render: function (ctx) { - ctx.beginPath(); - ctx.arc(0, 0, this.radius, degreesToRadians(this.startAngle), degreesToRadians(this.endAngle), false); - this._renderPaintInOrder(ctx); + toHexa: function() { + var source = this.getSource(), a; + + a = Math.round(source[3] * 255); + a = a.toString(16); + a = (a.length === 1) ? ('0' + a) : a; + + return this.toHex() + a.toUpperCase(); }, + /** - * Returns horizontal radius of an object (according to how an object is scaled) - * @return {Number} + * Gets value of alpha channel for this color + * @return {Number} 0-1 */ - getRadiusX: function () { - return this.get('radius') * this.get('scaleX'); + getAlpha: function() { + return this.getSource()[3]; }, + /** - * Returns vertical radius of an object (according to how an object is scaled) - * @return {Number} + * Sets value of alpha channel for this color + * @param {Number} alpha Alpha value 0-1 + * @return {fabric.Color} thisArg */ - getRadiusY: function () { - return this.get('radius') * this.get('scaleY'); + setAlpha: function(alpha) { + var source = this.getSource(); + source[3] = alpha; + this.setSource(source); + return this; }, + /** - * Sets radius of an object (and updates width accordingly) - * @return {Circle} thisArg - */ - setRadius: function (value) { - this.radius = value; - return this.set('width', value * 2).set('height', value * 2); + * Transforms color to its grayscale representation + * @return {fabric.Color} thisArg + */ + toGrayscale: function() { + var source = this.getSource(), + average = parseInt((source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0), 10), + currentAlpha = source[3]; + this.setSource([average, average, average, currentAlpha]); + return this; }, + /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance + * Transforms color to its black and white representation + * @param {Number} threshold + * @return {fabric.Color} thisArg */ - toObject: function (propertiesToInclude) { - return this.callSuper('toObject', ['radius', 'startAngle', 'endAngle'].concat(propertiesToInclude)); + toBlackWhite: function(threshold) { + var source = this.getSource(), + average = (source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0), + currentAlpha = source[3]; + + threshold = threshold || 127; + + average = (Number(average) < Number(threshold)) ? 0 : 255; + this.setSource([average, average, average, currentAlpha]); + return this; }, - /* _TO_SVG_START_ */ + /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance + * Overlays color with another color + * @param {String|fabric.Color} otherColor + * @return {fabric.Color} thisArg */ - _toSVG: function () { - const angle = (this.endAngle - this.startAngle) % 360; - if (angle === 0) { - return [ - '\n', - ]; - } - else { - const { radius } = this; - const start = degreesToRadians(this.startAngle), end = degreesToRadians(this.endAngle), startX = fabric$1.util.cos(start) * radius, startY = fabric$1.util.sin(start) * radius, endX = fabric$1.util.cos(end) * radius, endY = fabric$1.util.sin(end) * radius, largeFlag = angle > 180 ? '1' : '0'; - return [ - '\n', - ]; - } - }, - /* _TO_SVG_END_ */ -}); -/* _FROM_SVG_START_ */ -/** - * List of attribute names to account for when parsing SVG element (used by {@link Circle.fromElement}) - * @static - * @memberOf Circle - * @see: http://www.w3.org/TR/SVG/shapes.html#CircleElement - */ -Circle$1.ATTRIBUTE_NAMES = ['cx', 'cy', 'r', ...fabric$1.SHARED_ATTRIBUTES]; -/** - * Returns {@link Circle} instance from an SVG element - * @static - * @memberOf Circle - * @param {SVGElement} element Element to parse - * @param {Function} [callback] Options callback invoked after parsing is finished - * @param {Object} [options] Partial Circle object to default missing properties on the element. - * @throws {Error} If value of `r` attribute is missing or invalid - */ -Circle$1.fromElement = function (element, callback) { - const _a = fabric$1.parseAttributes(element, Circle$1.ATTRIBUTE_NAMES), { left = 0, top = 0, radius } = _a, otherParsedAttributes = __rest(_a, ["left", "top", "radius"]); - if (!radius || radius < 0) { - throw new Error('value of `r` attribute is required and can not be negative'); + overlayWith: function(otherColor) { + if (!(otherColor instanceof Color)) { + otherColor = new Color(otherColor); + } + + var result = [], + alpha = this.getAlpha(), + otherAlpha = 0.5, + source = this.getSource(), + otherSource = otherColor.getSource(), i; + + for (i = 0; i < 3; i++) { + result.push(Math.round((source[i] * (1 - otherAlpha)) + (otherSource[i] * otherAlpha))); + } + + result[3] = alpha; + this.setSource(result); + return this; } - // this probably requires to be fixed for default origins not being top/left. - callback(new fabric$1.Circle(Object.assign(Object.assign({}, otherParsedAttributes), { radius, left: left - radius, top: top - radius }))); -}; -/* _FROM_SVG_END_ */ -/** - * Returns {@link Circle} instance from an object representation - * @static - * @memberOf Circle - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ -Circle$1.fromObject = (object) => fabric$1.Object._fromObject(fabric$1.Circle, object); -fabric$1.Circle = Circle$1; - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}); - /** - * Triangle class - * @class fabric.Triangle - * @extends fabric.Object - * @return {fabric.Triangle} thisArg - * @see {@link fabric.Triangle#initialize} for constructor definition - */ - fabric.Triangle = fabric.util.createClass(fabric.Object, - /** @lends fabric.Triangle.prototype */ { - /** - * Type of an object - * @type String - * @default - */ - type: 'triangle', - /** - * Width is set to 100 to compensate the old initialize code that was setting it to 100 - * @type Number - * @default - */ - width: 100, - /** - * Height is set to 100 to compensate the old initialize code that was setting it to 100 - * @type Number - * @default - */ - height: 100, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function (ctx) { - var widthBy2 = this.width / 2, heightBy2 = this.height / 2; - ctx.beginPath(); - ctx.moveTo(-widthBy2, heightBy2); - ctx.lineTo(0, -heightBy2); - ctx.lineTo(widthBy2, heightBy2); - ctx.closePath(); - this._renderPaintInOrder(ctx); - }, - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function () { - var widthBy2 = this.width / 2, heightBy2 = this.height / 2, points = [ - -widthBy2 + ' ' + heightBy2, - '0 ' + -heightBy2, - widthBy2 + ' ' + heightBy2, - ].join(','); - return ['']; - }, - /* _TO_SVG_END_ */ - }); - /** - * Returns {@link fabric.Triangle} instance from an object representation - * @static - * @memberOf fabric.Triangle - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Triangle.fromObject = function (object) { - return fabric.Object._fromObject(fabric.Triangle, object); + }; + + /** + * Regex matching color in RGB or RGBA formats (ex: rgb(0, 0, 0), rgba(255, 100, 10, 0.5), rgba( 255 , 100 , 10 , 0.5 ), rgb(1,1,1), rgba(100%, 60%, 10%, 0.5)) + * @static + * @field + * @memberOf fabric.Color + */ + // eslint-disable-next-line max-len + fabric.Color.reRGBa = /^rgba?\(\s*(\d{1,3}(?:\.\d+)?\%?)\s*,\s*(\d{1,3}(?:\.\d+)?\%?)\s*,\s*(\d{1,3}(?:\.\d+)?\%?)\s*(?:\s*,\s*((?:\d*\.?\d+)?)\s*)?\)$/i; + + /** + * Regex matching color in HSL or HSLA formats (ex: hsl(200, 80%, 10%), hsla(300, 50%, 80%, 0.5), hsla( 300 , 50% , 80% , 0.5 )) + * @static + * @field + * @memberOf fabric.Color + */ + fabric.Color.reHSLa = /^hsla?\(\s*(\d{1,3})\s*,\s*(\d{1,3}\%)\s*,\s*(\d{1,3}\%)\s*(?:\s*,\s*(\d+(?:\.\d+)?)\s*)?\)$/i; + + /** + * Regex matching color in HEX format (ex: #FF5544CC, #FF5555, 010155, aff) + * @static + * @field + * @memberOf fabric.Color + */ + fabric.Color.reHex = /^#?([0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{4}|[0-9a-f]{3})$/i; + + /** + * Map of the 148 color names with HEX code + * @static + * @field + * @memberOf fabric.Color + * @see: https://www.w3.org/TR/css3-color/#svg-color + */ + fabric.Color.colorNameMap = { + aliceblue: '#F0F8FF', + antiquewhite: '#FAEBD7', + aqua: '#00FFFF', + aquamarine: '#7FFFD4', + azure: '#F0FFFF', + beige: '#F5F5DC', + bisque: '#FFE4C4', + black: '#000000', + blanchedalmond: '#FFEBCD', + blue: '#0000FF', + blueviolet: '#8A2BE2', + brown: '#A52A2A', + burlywood: '#DEB887', + cadetblue: '#5F9EA0', + chartreuse: '#7FFF00', + chocolate: '#D2691E', + coral: '#FF7F50', + cornflowerblue: '#6495ED', + cornsilk: '#FFF8DC', + crimson: '#DC143C', + cyan: '#00FFFF', + darkblue: '#00008B', + darkcyan: '#008B8B', + darkgoldenrod: '#B8860B', + darkgray: '#A9A9A9', + darkgrey: '#A9A9A9', + darkgreen: '#006400', + darkkhaki: '#BDB76B', + darkmagenta: '#8B008B', + darkolivegreen: '#556B2F', + darkorange: '#FF8C00', + darkorchid: '#9932CC', + darkred: '#8B0000', + darksalmon: '#E9967A', + darkseagreen: '#8FBC8F', + darkslateblue: '#483D8B', + darkslategray: '#2F4F4F', + darkslategrey: '#2F4F4F', + darkturquoise: '#00CED1', + darkviolet: '#9400D3', + deeppink: '#FF1493', + deepskyblue: '#00BFFF', + dimgray: '#696969', + dimgrey: '#696969', + dodgerblue: '#1E90FF', + firebrick: '#B22222', + floralwhite: '#FFFAF0', + forestgreen: '#228B22', + fuchsia: '#FF00FF', + gainsboro: '#DCDCDC', + ghostwhite: '#F8F8FF', + gold: '#FFD700', + goldenrod: '#DAA520', + gray: '#808080', + grey: '#808080', + green: '#008000', + greenyellow: '#ADFF2F', + honeydew: '#F0FFF0', + hotpink: '#FF69B4', + indianred: '#CD5C5C', + indigo: '#4B0082', + ivory: '#FFFFF0', + khaki: '#F0E68C', + lavender: '#E6E6FA', + lavenderblush: '#FFF0F5', + lawngreen: '#7CFC00', + lemonchiffon: '#FFFACD', + lightblue: '#ADD8E6', + lightcoral: '#F08080', + lightcyan: '#E0FFFF', + lightgoldenrodyellow: '#FAFAD2', + lightgray: '#D3D3D3', + lightgrey: '#D3D3D3', + lightgreen: '#90EE90', + lightpink: '#FFB6C1', + lightsalmon: '#FFA07A', + lightseagreen: '#20B2AA', + lightskyblue: '#87CEFA', + lightslategray: '#778899', + lightslategrey: '#778899', + lightsteelblue: '#B0C4DE', + lightyellow: '#FFFFE0', + lime: '#00FF00', + limegreen: '#32CD32', + linen: '#FAF0E6', + magenta: '#FF00FF', + maroon: '#800000', + mediumaquamarine: '#66CDAA', + mediumblue: '#0000CD', + mediumorchid: '#BA55D3', + mediumpurple: '#9370DB', + mediumseagreen: '#3CB371', + mediumslateblue: '#7B68EE', + mediumspringgreen: '#00FA9A', + mediumturquoise: '#48D1CC', + mediumvioletred: '#C71585', + midnightblue: '#191970', + mintcream: '#F5FFFA', + mistyrose: '#FFE4E1', + moccasin: '#FFE4B5', + navajowhite: '#FFDEAD', + navy: '#000080', + oldlace: '#FDF5E6', + olive: '#808000', + olivedrab: '#6B8E23', + orange: '#FFA500', + orangered: '#FF4500', + orchid: '#DA70D6', + palegoldenrod: '#EEE8AA', + palegreen: '#98FB98', + paleturquoise: '#AFEEEE', + palevioletred: '#DB7093', + papayawhip: '#FFEFD5', + peachpuff: '#FFDAB9', + peru: '#CD853F', + pink: '#FFC0CB', + plum: '#DDA0DD', + powderblue: '#B0E0E6', + purple: '#800080', + rebeccapurple: '#663399', + red: '#FF0000', + rosybrown: '#BC8F8F', + royalblue: '#4169E1', + saddlebrown: '#8B4513', + salmon: '#FA8072', + sandybrown: '#F4A460', + seagreen: '#2E8B57', + seashell: '#FFF5EE', + sienna: '#A0522D', + silver: '#C0C0C0', + skyblue: '#87CEEB', + slateblue: '#6A5ACD', + slategray: '#708090', + slategrey: '#708090', + snow: '#FFFAFA', + springgreen: '#00FF7F', + steelblue: '#4682B4', + tan: '#D2B48C', + teal: '#008080', + thistle: '#D8BFD8', + tomato: '#FF6347', + turquoise: '#40E0D0', + violet: '#EE82EE', + wheat: '#F5DEB3', + white: '#FFFFFF', + whitesmoke: '#F5F5F5', + yellow: '#FFFF00', + yellowgreen: '#9ACD32' + }; + + /** + * @private + * @param {Number} p + * @param {Number} q + * @param {Number} t + * @return {Number} + */ + function hue2rgb(p, q, t) { + if (t < 0) { + t += 1; + } + if (t > 1) { + t -= 1; + } + if (t < 1 / 6) { + return p + (q - p) * 6 * t; + } + if (t < 1 / 2) { + return q; + } + if (t < 2 / 3) { + return p + (q - p) * (2 / 3 - t) * 6; + } + return p; + } + + /** + * Returns new color object, when given a color in RGB format + * @memberOf fabric.Color + * @param {String} color Color value ex: rgb(0-255,0-255,0-255) + * @return {fabric.Color} + */ + fabric.Color.fromRgb = function(color) { + return Color.fromSource(Color.sourceFromRgb(color)); + }; + + /** + * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in RGB or RGBA format + * @memberOf fabric.Color + * @param {String} color Color value ex: rgb(0-255,0-255,0-255), rgb(0%-100%,0%-100%,0%-100%) + * @return {Array} source + */ + fabric.Color.sourceFromRgb = function(color) { + var match = color.match(Color.reRGBa); + if (match) { + var r = parseInt(match[1], 10) / (/%$/.test(match[1]) ? 100 : 1) * (/%$/.test(match[1]) ? 255 : 1), + g = parseInt(match[2], 10) / (/%$/.test(match[2]) ? 100 : 1) * (/%$/.test(match[2]) ? 255 : 1), + b = parseInt(match[3], 10) / (/%$/.test(match[3]) ? 100 : 1) * (/%$/.test(match[3]) ? 255 : 1); + + return [ + parseInt(r, 10), + parseInt(g, 10), + parseInt(b, 10), + match[4] ? parseFloat(match[4]) : 1 + ]; + } + }; + + /** + * Returns new color object, when given a color in RGBA format + * @static + * @function + * @memberOf fabric.Color + * @param {String} color + * @return {fabric.Color} + */ + fabric.Color.fromRgba = Color.fromRgb; + + /** + * Returns new color object, when given a color in HSL format + * @param {String} color Color value ex: hsl(0-260,0%-100%,0%-100%) + * @memberOf fabric.Color + * @return {fabric.Color} + */ + fabric.Color.fromHsl = function(color) { + return Color.fromSource(Color.sourceFromHsl(color)); + }; + + /** + * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HSL or HSLA format. + * Adapted from https://github.com/mjijackson + * @memberOf fabric.Color + * @param {String} color Color value ex: hsl(0-360,0%-100%,0%-100%) or hsla(0-360,0%-100%,0%-100%, 0-1) + * @return {Array} source + * @see http://http://www.w3.org/TR/css3-color/#hsl-color + */ + fabric.Color.sourceFromHsl = function(color) { + var match = color.match(Color.reHSLa); + if (!match) { + return; + } + + var h = (((parseFloat(match[1]) % 360) + 360) % 360) / 360, + s = parseFloat(match[2]) / (/%$/.test(match[2]) ? 100 : 1), + l = parseFloat(match[3]) / (/%$/.test(match[3]) ? 100 : 1), + r, g, b; + + if (s === 0) { + r = g = b = l; + } + else { + var q = l <= 0.5 ? l * (s + 1) : l + s - l * s, + p = l * 2 - q; + + r = hue2rgb(p, q, h + 1 / 3); + g = hue2rgb(p, q, h); + b = hue2rgb(p, q, h - 1 / 3); + } + + return [ + Math.round(r * 255), + Math.round(g * 255), + Math.round(b * 255), + match[4] ? parseFloat(match[4]) : 1 + ]; + }; + + /** + * Returns new color object, when given a color in HSLA format + * @static + * @function + * @memberOf fabric.Color + * @param {String} color + * @return {fabric.Color} + */ + fabric.Color.fromHsla = Color.fromHsl; + + /** + * Returns new color object, when given a color in HEX format + * @static + * @memberOf fabric.Color + * @param {String} color Color value ex: FF5555 + * @return {fabric.Color} + */ + fabric.Color.fromHex = function(color) { + return Color.fromSource(Color.sourceFromHex(color)); + }; + + /** + * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HEX format + * @static + * @memberOf fabric.Color + * @param {String} color ex: FF5555 or FF5544CC (RGBa) + * @return {Array} source + */ + fabric.Color.sourceFromHex = function(color) { + if (color.match(Color.reHex)) { + var value = color.slice(color.indexOf('#') + 1), + isShortNotation = (value.length === 3 || value.length === 4), + isRGBa = (value.length === 8 || value.length === 4), + r = isShortNotation ? (value.charAt(0) + value.charAt(0)) : value.substring(0, 2), + g = isShortNotation ? (value.charAt(1) + value.charAt(1)) : value.substring(2, 4), + b = isShortNotation ? (value.charAt(2) + value.charAt(2)) : value.substring(4, 6), + a = isRGBa ? (isShortNotation ? (value.charAt(3) + value.charAt(3)) : value.substring(6, 8)) : 'FF'; + + return [ + parseInt(r, 16), + parseInt(g, 16), + parseInt(b, 16), + parseFloat((parseInt(a, 16) / 255).toFixed(2)) + ]; + } + }; + + /** + * Returns new color object, when given color in array representation (ex: [200, 100, 100, 0.5]) + * @static + * @memberOf fabric.Color + * @param {Array} source + * @return {fabric.Color} + */ + fabric.Color.fromSource = function(source) { + var oColor = new Color(); + oColor.setSource(source); + return oColor; + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + scaleMap = ['e', 'se', 's', 'sw', 'w', 'nw', 'n', 'ne', 'e'], + skewMap = ['ns', 'nesw', 'ew', 'nwse'], + controls = {}, + LEFT = 'left', TOP = 'top', RIGHT = 'right', BOTTOM = 'bottom', CENTER = 'center', + opposite = { + top: BOTTOM, + bottom: TOP, + left: RIGHT, + right: LEFT, + center: CENTER, + }, radiansToDegrees = fabric.util.radiansToDegrees, + sign = (Math.sign || function(x) { return ((x > 0) - (x < 0)) || +x; }); + + /** + * Combine control position and object angle to find the control direction compared + * to the object center. + * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls + * @param {fabric.Control} control the control class + * @return {Number} 0 - 7 a quadrant number + */ + function findCornerQuadrant(fabricObject, control) { + var cornerAngle = fabricObject.angle + radiansToDegrees(Math.atan2(control.y, control.x)) + 360; + return Math.round((cornerAngle % 360) / 45); + } + + function fireEvent(eventName, options) { + var target = options.transform.target, + canvas = target.canvas, + canvasOptions = fabric.util.object.clone(options); + canvasOptions.target = target; + canvas && canvas.fire('object:' + eventName, canvasOptions); + target.fire(eventName, options); + } + + /** + * Inspect event and fabricObject properties to understand if the scaling action + * @param {Event} eventData from the user action + * @param {fabric.Object} fabricObject the fabric object about to scale + * @return {Boolean} true if scale is proportional + */ + function scaleIsProportional(eventData, fabricObject) { + var canvas = fabricObject.canvas, uniScaleKey = canvas.uniScaleKey, + uniformIsToggled = eventData[uniScaleKey]; + return (canvas.uniformScaling && !uniformIsToggled) || + (!canvas.uniformScaling && uniformIsToggled); + } + + /** + * Checks if transform is centered + * @param {Object} transform transform data + * @return {Boolean} true if transform is centered + */ + function isTransformCentered(transform) { + return transform.originX === CENTER && transform.originY === CENTER; + } + + /** + * Inspect fabricObject to understand if the current scaling action is allowed + * @param {fabric.Object} fabricObject the fabric object about to scale + * @param {String} by 'x' or 'y' or '' + * @param {Boolean} scaleProportionally true if we are trying to scale proportionally + * @return {Boolean} true if scaling is not allowed at current conditions + */ + function scalingIsForbidden(fabricObject, by, scaleProportionally) { + var lockX = fabricObject.lockScalingX, lockY = fabricObject.lockScalingY; + if (lockX && lockY) { + return true; + } + if (!by && (lockX || lockY) && scaleProportionally) { + return true; + } + if (lockX && by === 'x') { + return true; + } + if (lockY && by === 'y') { + return true; + } + return false; + } + + /** + * return the correct cursor style for the scale action + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} a valid css string for the cursor + */ + function scaleCursorStyleHandler(eventData, control, fabricObject) { + var notAllowed = 'not-allowed', + scaleProportionally = scaleIsProportional(eventData, fabricObject), + by = ''; + if (control.x !== 0 && control.y === 0) { + by = 'x'; + } + else if (control.x === 0 && control.y !== 0) { + by = 'y'; + } + if (scalingIsForbidden(fabricObject, by, scaleProportionally)) { + return notAllowed; + } + var n = findCornerQuadrant(fabricObject, control); + return scaleMap[n] + '-resize'; + } + + /** + * return the correct cursor style for the skew action + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} a valid css string for the cursor + */ + function skewCursorStyleHandler(eventData, control, fabricObject) { + var notAllowed = 'not-allowed'; + if (control.x !== 0 && fabricObject.lockSkewingY) { + return notAllowed; + } + if (control.y !== 0 && fabricObject.lockSkewingX) { + return notAllowed; + } + var n = findCornerQuadrant(fabricObject, control) % 4; + return skewMap[n] + '-resize'; + } + + /** + * Combine skew and scale style handlers to cover fabric standard use case + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} a valid css string for the cursor + */ + function scaleSkewCursorStyleHandler(eventData, control, fabricObject) { + if (eventData[fabricObject.canvas.altActionKey]) { + return controls.skewCursorStyleHandler(eventData, control, fabricObject); + } + return controls.scaleCursorStyleHandler(eventData, control, fabricObject); + } + + /** + * Inspect event, control and fabricObject to return the correct action name + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} an action name + */ + function scaleOrSkewActionName(eventData, control, fabricObject) { + var isAlternative = eventData[fabricObject.canvas.altActionKey]; + if (control.x === 0) { + // then is scaleY or skewX + return isAlternative ? 'skewX' : 'scaleY'; + } + if (control.y === 0) { + // then is scaleY or skewX + return isAlternative ? 'skewY' : 'scaleX'; + } + } + + /** + * Find the correct style for the control that is used for rotation. + * this function is very simple and it just take care of not-allowed or standard cursor + * @param {Event} eventData the javascript event that is causing the scale + * @param {fabric.Control} control the control that is interested in the action + * @param {fabric.Object} fabricObject the fabric object that is interested in the action + * @return {String} a valid css string for the cursor + */ + function rotationStyleHandler(eventData, control, fabricObject) { + if (fabricObject.lockRotation) { + return 'not-allowed'; + } + return control.cursorStyle; + } + + function commonEventInfo(eventData, transform, x, y) { + return { + e: eventData, + transform: transform, + pointer: { + x: x, + y: y, + } }; -})(typeof exports !== 'undefined' ? exports : window); + } -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), piBy2 = Math.PI * 2; - /** - * Ellipse class - * @class fabric.Ellipse - * @extends fabric.Object - * @return {fabric.Ellipse} thisArg - * @see {@link fabric.Ellipse#initialize} for constructor definition - */ - fabric.Ellipse = fabric.util.createClass(fabric.Object, - /** @lends fabric.Ellipse.prototype */ { - /** - * Type of an object - * @type String - * @default - */ - type: 'ellipse', - /** - * Horizontal radius - * @type Number - * @default - */ - rx: 0, - /** - * Vertical radius - * @type Number - * @default - */ - ry: 0, - cacheProperties: fabric.Object.prototype.cacheProperties.concat('rx', 'ry'), - /** - * Constructor - * @param {Object} [options] Options object - * @return {fabric.Ellipse} thisArg - */ - initialize: function (options) { - this.callSuper('initialize', options); - this.set('rx', (options && options.rx) || 0); - this.set('ry', (options && options.ry) || 0); - }, - /** - * @private - * @param {String} key - * @param {*} value - * @return {fabric.Ellipse} thisArg - */ - _set: function (key, value) { - this.callSuper('_set', key, value); - switch (key) { - case 'rx': - this.rx = value; - this.set('width', value * 2); - break; - case 'ry': - this.ry = value; - this.set('height', value * 2); - break; - } - return this; - }, - /** - * Returns horizontal radius of an object (according to how an object is scaled) - * @return {Number} - */ - getRx: function () { - return this.get('rx') * this.get('scaleX'); - }, - /** - * Returns Vertical radius of an object (according to how an object is scaled) - * @return {Number} - */ - getRy: function () { - return this.get('ry') * this.get('scaleY'); - }, - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function (propertiesToInclude) { - return this.callSuper('toObject', ['rx', 'ry'].concat(propertiesToInclude)); - }, - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function () { - return [ - '\n', - ]; - }, - /* _TO_SVG_END_ */ - /** - * @private - * @param {CanvasRenderingContext2D} ctx context to render on - */ - _render: function (ctx) { - ctx.beginPath(); - ctx.save(); - ctx.transform(1, 0, 0, this.ry / this.rx, 0, 0); - ctx.arc(0, 0, this.rx, 0, piBy2, false); - ctx.restore(); - this._renderPaintInOrder(ctx); - }, - }); - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Ellipse.fromElement}) - * @static - * @memberOf fabric.Ellipse - * @see http://www.w3.org/TR/SVG/shapes.html#EllipseElement - */ - fabric.Ellipse.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('cx cy rx ry'.split(' ')); - /** - * Returns {@link fabric.Ellipse} instance from an SVG element - * @static - * @memberOf fabric.Ellipse - * @param {SVGElement} element Element to parse - * @param {Function} [callback] Options callback invoked after parsing is finished - * @return {fabric.Ellipse} - */ - fabric.Ellipse.fromElement = function (element, callback) { - var parsedAttributes = fabric.parseAttributes(element, fabric.Ellipse.ATTRIBUTE_NAMES); - parsedAttributes.left = (parsedAttributes.left || 0) - parsedAttributes.rx; - parsedAttributes.top = (parsedAttributes.top || 0) - parsedAttributes.ry; - callback(new fabric.Ellipse(parsedAttributes)); + /** + * Wrap an action handler with saving/restoring object position on the transform. + * this is the code that permits to objects to keep their position while transforming. + * @param {Function} actionHandler the function to wrap + * @return {Function} a function with an action handler signature + */ + function wrapWithFixedAnchor(actionHandler) { + return function(eventData, transform, x, y) { + var target = transform.target, centerPoint = target.getCenterPoint(), + constraint = target.translateToOriginPoint(centerPoint, transform.originX, transform.originY), + actionPerformed = actionHandler(eventData, transform, x, y); + target.setPositionByOrigin(constraint, transform.originX, transform.originY); + return actionPerformed; }; - /* _FROM_SVG_END_ */ - /** - * Returns {@link fabric.Ellipse} instance from an object representation - * @static - * @memberOf fabric.Ellipse - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Ellipse.fromObject = function (object) { - return fabric.Object._fromObject(fabric.Ellipse, object); + } + + /** + * Wrap an action handler with firing an event if the action is performed + * @param {Function} actionHandler the function to wrap + * @return {Function} a function with an action handler signature + */ + function wrapWithFireEvent(eventName, actionHandler) { + return function(eventData, transform, x, y) { + var actionPerformed = actionHandler(eventData, transform, x, y); + if (actionPerformed) { + fireEvent(eventName, commonEventInfo(eventData, transform, x, y)); + } + return actionPerformed; }; -})(typeof exports !== 'undefined' ? exports : window); + } -/** - * Rectangle class - * @class Rect - * @extends fabric.Object - * @return {Rect} thisArg - * @see {@link Rect#initialize} for constructor definition - */ -const Rect$1 = fabric$1.util.createClass(fabric$1.Object, -/** @lends Rect.prototype */ { - /** - * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged}) - * as well as for history (undo/redo) purposes - * @type Array - */ - stateProperties: fabric$1.Object.prototype.stateProperties.concat('rx', 'ry'), - /** - * Type of an object - * @type String - * @default - */ - type: 'rect', - /** - * Horizontal border radius - * @type Number - * @default - */ - rx: 0, - /** - * Vertical border radius - * @type Number - * @default - */ - ry: 0, - cacheProperties: fabric$1.Object.prototype.cacheProperties.concat('rx', 'ry'), - /** - * Constructor - * @param {Object} [options] Options object - * @return {Object} thisArg - */ - initialize: function (options) { - this.callSuper('initialize', options); - this._initRxRy(); - }, - /** - * Initializes rx/ry attributes - * @private - */ - _initRxRy: function () { - const { rx, ry } = this; - if (rx && !ry) { - this.ry = rx; - } - else if (ry && !rx) { - this.rx = ry; - } - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function (ctx) { - // 1x1 case (used in spray brush) optimization was removed because - // with caching and higher zoom level this makes more damage than help - const { width: w, height: h } = this; - const x = -w / 2; - const y = -h / 2; - const rx = this.rx ? Math.min(this.rx, w / 2) : 0; - const ry = this.ry ? Math.min(this.ry, h / 2) : 0; - const isRounded = rx !== 0 || ry !== 0; - ctx.beginPath(); - ctx.moveTo(x + rx, y); - ctx.lineTo(x + w - rx, y); - isRounded && - ctx.bezierCurveTo(x + w - kRect * rx, y, x + w, y + kRect * ry, x + w, y + ry); - ctx.lineTo(x + w, y + h - ry); - isRounded && - ctx.bezierCurveTo(x + w, y + h - kRect * ry, x + w - kRect * rx, y + h, x + w - rx, y + h); - ctx.lineTo(x + rx, y + h); - isRounded && - ctx.bezierCurveTo(x + kRect * rx, y + h, x, y + h - kRect * ry, x, y + h - ry); - ctx.lineTo(x, y + ry); - isRounded && - ctx.bezierCurveTo(x, y + kRect * ry, x + kRect * rx, y, x + rx, y); - ctx.closePath(); - this._renderPaintInOrder(ctx); - }, - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance + /** + * Transforms a point described by x and y in a distance from the top left corner of the object + * bounding box. + * @param {Object} transform + * @param {String} originX + * @param {String} originY + * @param {number} x + * @param {number} y + * @return {Fabric.Point} the normalized point + */ + function getLocalPoint(transform, originX, originY, x, y) { + var target = transform.target, + control = target.controls[transform.corner], + zoom = target.canvas.getZoom(), + padding = target.padding / zoom, + localPoint = target.toLocalPoint(new fabric.Point(x, y), originX, originY); + if (localPoint.x >= padding) { + localPoint.x -= padding; + } + if (localPoint.x <= -padding) { + localPoint.x += padding; + } + if (localPoint.y >= padding) { + localPoint.y -= padding; + } + if (localPoint.y <= padding) { + localPoint.y += padding; + } + localPoint.x -= control.offsetX; + localPoint.y -= control.offsetY; + return localPoint; + } + + /** + * Detect if the fabric object is flipped on one side. + * @param {fabric.Object} target + * @return {Boolean} true if one flip, but not two. + */ + function targetHasOneFlip(target) { + return target.flipX !== target.flipY; + } + + /** + * Utility function to compensate the scale factor when skew is applied on both axes + * @private + */ + function compensateScaleForSkew(target, oppositeSkew, scaleToCompensate, axis, reference) { + if (target[oppositeSkew] !== 0) { + var newDim = target._getTransformedDimensions()[axis]; + var newValue = reference / newDim * target[scaleToCompensate]; + target.set(scaleToCompensate, newValue); + } + } + + /** + * Action handler for skewing on the X axis + * @private + */ + function skewObjectX(eventData, transform, x, y) { + var target = transform.target, + // find how big the object would be, if there was no skewX. takes in account scaling + dimNoSkew = target._getTransformedDimensions(0, target.skewY), + localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), + // the mouse is in the center of the object, and we want it to stay there. + // so the object will grow twice as much as the mouse. + // this makes the skew growth to localPoint * 2 - dimNoSkew. + totalSkewSize = Math.abs(localPoint.x * 2) - dimNoSkew.x, + currentSkew = target.skewX, newSkew; + if (totalSkewSize < 2) { + // let's make it easy to go back to position 0. + newSkew = 0; + } + else { + newSkew = radiansToDegrees( + Math.atan2((totalSkewSize / target.scaleX), (dimNoSkew.y / target.scaleY)) + ); + // now we have to find the sign of the skew. + // it mostly depend on the origin of transformation. + if (transform.originX === LEFT && transform.originY === BOTTOM) { + newSkew = -newSkew; + } + if (transform.originX === RIGHT && transform.originY === TOP) { + newSkew = -newSkew; + } + if (targetHasOneFlip(target)) { + newSkew = -newSkew; + } + } + var hasSkewed = currentSkew !== newSkew; + if (hasSkewed) { + var dimBeforeSkewing = target._getTransformedDimensions().y; + target.set('skewX', newSkew); + compensateScaleForSkew(target, 'skewY', 'scaleY', 'y', dimBeforeSkewing); + } + return hasSkewed; + } + + /** + * Action handler for skewing on the Y axis + * @private + */ + function skewObjectY(eventData, transform, x, y) { + var target = transform.target, + // find how big the object would be, if there was no skewX. takes in account scaling + dimNoSkew = target._getTransformedDimensions(target.skewX, 0), + localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), + // the mouse is in the center of the object, and we want it to stay there. + // so the object will grow twice as much as the mouse. + // this makes the skew growth to localPoint * 2 - dimNoSkew. + totalSkewSize = Math.abs(localPoint.y * 2) - dimNoSkew.y, + currentSkew = target.skewY, newSkew; + if (totalSkewSize < 2) { + // let's make it easy to go back to position 0. + newSkew = 0; + } + else { + newSkew = radiansToDegrees( + Math.atan2((totalSkewSize / target.scaleY), (dimNoSkew.x / target.scaleX)) + ); + // now we have to find the sign of the skew. + // it mostly depend on the origin of transformation. + if (transform.originX === LEFT && transform.originY === BOTTOM) { + newSkew = -newSkew; + } + if (transform.originX === RIGHT && transform.originY === TOP) { + newSkew = -newSkew; + } + if (targetHasOneFlip(target)) { + newSkew = -newSkew; + } + } + var hasSkewed = currentSkew !== newSkew; + if (hasSkewed) { + var dimBeforeSkewing = target._getTransformedDimensions().x; + target.set('skewY', newSkew); + compensateScaleForSkew(target, 'skewX', 'scaleX', 'x', dimBeforeSkewing); + } + return hasSkewed; + } + + /** + * Wrapped Action handler for skewing on the Y axis, takes care of the + * skew direction and determine the correct transform origin for the anchor point + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function skewHandlerX(eventData, transform, x, y) { + // step1 figure out and change transform origin. + // if skewX > 0 and originY bottom we anchor on right + // if skewX > 0 and originY top we anchor on left + // if skewX < 0 and originY bottom we anchor on left + // if skewX < 0 and originY top we anchor on right + // if skewX is 0, we look for mouse position to understand where are we going. + var target = transform.target, currentSkew = target.skewX, originX, originY = transform.originY; + if (target.lockSkewingX) { + return false; + } + if (currentSkew === 0) { + var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y); + if (localPointFromCenter.x > 0) { + // we are pulling right, anchor left; + originX = LEFT; + } + else { + // we are pulling right, anchor right + originX = RIGHT; + } + } + else { + if (currentSkew > 0) { + originX = originY === TOP ? LEFT : RIGHT; + } + if (currentSkew < 0) { + originX = originY === TOP ? RIGHT : LEFT; + } + // is the object flipped on one side only? swap the origin. + if (targetHasOneFlip(target)) { + originX = originX === LEFT ? RIGHT : LEFT; + } + } + + // once we have the origin, we find the anchor point + transform.originX = originX; + var finalHandler = wrapWithFireEvent('skewing', wrapWithFixedAnchor(skewObjectX)); + return finalHandler(eventData, transform, x, y); + } + + /** + * Wrapped Action handler for skewing on the Y axis, takes care of the + * skew direction and determine the correct transform origin for the anchor point + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function skewHandlerY(eventData, transform, x, y) { + // step1 figure out and change transform origin. + // if skewY > 0 and originX left we anchor on top + // if skewY > 0 and originX right we anchor on bottom + // if skewY < 0 and originX left we anchor on bottom + // if skewY < 0 and originX right we anchor on top + // if skewY is 0, we look for mouse position to understand where are we going. + var target = transform.target, currentSkew = target.skewY, originY, originX = transform.originX; + if (target.lockSkewingY) { + return false; + } + if (currentSkew === 0) { + var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y); + if (localPointFromCenter.y > 0) { + // we are pulling down, anchor up; + originY = TOP; + } + else { + // we are pulling up, anchor down + originY = BOTTOM; + } + } + else { + if (currentSkew > 0) { + originY = originX === LEFT ? TOP : BOTTOM; + } + if (currentSkew < 0) { + originY = originX === LEFT ? BOTTOM : TOP; + } + // is the object flipped on one side only? swap the origin. + if (targetHasOneFlip(target)) { + originY = originY === TOP ? BOTTOM : TOP; + } + } + + // once we have the origin, we find the anchor point + transform.originY = originY; + var finalHandler = wrapWithFireEvent('skewing', wrapWithFixedAnchor(skewObjectY)); + return finalHandler(eventData, transform, x, y); + } + + /** + * Action handler for rotation and snapping, without anchor point. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + * @private + */ + function rotationWithSnapping(eventData, transform, x, y) { + var t = transform, + target = t.target, + pivotPoint = target.translateToOriginPoint(target.getCenterPoint(), t.originX, t.originY); + + if (target.lockRotation) { + return false; + } + + var lastAngle = Math.atan2(t.ey - pivotPoint.y, t.ex - pivotPoint.x), + curAngle = Math.atan2(y - pivotPoint.y, x - pivotPoint.x), + angle = radiansToDegrees(curAngle - lastAngle + t.theta), + hasRotated = true; + + if (target.snapAngle > 0) { + var snapAngle = target.snapAngle, + snapThreshold = target.snapThreshold || snapAngle, + rightAngleLocked = Math.ceil(angle / snapAngle) * snapAngle, + leftAngleLocked = Math.floor(angle / snapAngle) * snapAngle; + + if (Math.abs(angle - leftAngleLocked) < snapThreshold) { + angle = leftAngleLocked; + } + else if (Math.abs(angle - rightAngleLocked) < snapThreshold) { + angle = rightAngleLocked; + } + } + + // normalize angle to positive value + if (angle < 0) { + angle = 360 + angle; + } + angle %= 360; + + hasRotated = target.angle !== angle; + target.angle = angle; + return hasRotated; + } + + /** + * Basic scaling logic, reused with different constrain for scaling X,Y, freely or equally. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @param {Object} options additional information for scaling + * @param {String} options.by 'x', 'y', 'equally' or '' to indicate type of scaling + * @return {Boolean} true if some change happened + * @private + */ + function scaleObject(eventData, transform, x, y, options) { + options = options || {}; + var target = transform.target, + lockScalingX = target.lockScalingX, lockScalingY = target.lockScalingY, + by = options.by, newPoint, scaleX, scaleY, dim, + scaleProportionally = scaleIsProportional(eventData, target), + forbidScaling = scalingIsForbidden(target, by, scaleProportionally), + signX, signY, gestureScale = transform.gestureScale; + + if (forbidScaling) { + return false; + } + if (gestureScale) { + scaleX = transform.scaleX * gestureScale; + scaleY = transform.scaleY * gestureScale; + } + else { + newPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y); + // use of sign: We use sign to detect change of direction of an action. sign usually change when + // we cross the origin point with the mouse. So a scale flip for example. There is an issue when scaling + // by center and scaling using one middle control ( default: mr, mt, ml, mb), the mouse movement can easily + // cross many time the origin point and flip the object. so we need a way to filter out the noise. + // This ternary here should be ok to filter out X scaling when we want Y only and vice versa. + signX = by !== 'y' ? sign(newPoint.x) : 1; + signY = by !== 'x' ? sign(newPoint.y) : 1; + if (!transform.signX) { + transform.signX = signX; + } + if (!transform.signY) { + transform.signY = signY; + } + + if (target.lockScalingFlip && + (transform.signX !== signX || transform.signY !== signY) + ) { + return false; + } + + dim = target._getTransformedDimensions(); + // missing detection of flip and logic to switch the origin + if (scaleProportionally && !by) { + // uniform scaling + var distance = Math.abs(newPoint.x) + Math.abs(newPoint.y), + original = transform.original, + originalDistance = Math.abs(dim.x * original.scaleX / target.scaleX) + + Math.abs(dim.y * original.scaleY / target.scaleY), + scale = distance / originalDistance; + scaleX = original.scaleX * scale; + scaleY = original.scaleY * scale; + } + else { + scaleX = Math.abs(newPoint.x * target.scaleX / dim.x); + scaleY = Math.abs(newPoint.y * target.scaleY / dim.y); + } + // if we are scaling by center, we need to double the scale + if (isTransformCentered(transform)) { + scaleX *= 2; + scaleY *= 2; + } + if (transform.signX !== signX && by !== 'y') { + transform.originX = opposite[transform.originX]; + scaleX *= -1; + transform.signX = signX; + } + if (transform.signY !== signY && by !== 'x') { + transform.originY = opposite[transform.originY]; + scaleY *= -1; + transform.signY = signY; + } + } + // minScale is taken are in the setter. + var oldScaleX = target.scaleX, oldScaleY = target.scaleY; + if (!by) { + !lockScalingX && target.set('scaleX', scaleX); + !lockScalingY && target.set('scaleY', scaleY); + } + else { + // forbidden cases already handled on top here. + by === 'x' && target.set('scaleX', scaleX); + by === 'y' && target.set('scaleY', scaleY); + } + return oldScaleX !== target.scaleX || oldScaleY !== target.scaleY; + } + + /** + * Generic scaling logic, to scale from corners either equally or freely. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scaleObjectFromCorner(eventData, transform, x, y) { + return scaleObject(eventData, transform, x, y); + } + + /** + * Scaling logic for the X axis. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scaleObjectX(eventData, transform, x, y) { + return scaleObject(eventData, transform, x, y , { by: 'x' }); + } + + /** + * Scaling logic for the Y axis. + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scaleObjectY(eventData, transform, x, y) { + return scaleObject(eventData, transform, x, y , { by: 'y' }); + } + + /** + * Composed action handler to either scale Y or skew X + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scalingYOrSkewingX(eventData, transform, x, y) { + // ok some safety needed here. + if (eventData[transform.target.canvas.altActionKey]) { + return controls.skewHandlerX(eventData, transform, x, y); + } + return controls.scalingY(eventData, transform, x, y); + } + + /** + * Composed action handler to either scale X or skew Y + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function scalingXOrSkewingY(eventData, transform, x, y) { + // ok some safety needed here. + if (eventData[transform.target.canvas.altActionKey]) { + return controls.skewHandlerY(eventData, transform, x, y); + } + return controls.scalingX(eventData, transform, x, y); + } + + /** + * Action handler to change textbox width + * Needs to be wrapped with `wrapWithFixedAnchor` to be effective + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if some change happened + */ + function changeWidth(eventData, transform, x, y) { + var target = transform.target, localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), + strokePadding = target.strokeWidth / (target.strokeUniform ? target.scaleX : 1), + multiplier = isTransformCentered(transform) ? 2 : 1, + oldWidth = target.width, + newWidth = Math.abs(localPoint.x * multiplier / target.scaleX) - strokePadding; + target.set('width', Math.max(newWidth, 0)); + return oldWidth !== newWidth; + } + + /** + * Action handler + * @private + * @param {Event} eventData javascript event that is doing the transform + * @param {Object} transform javascript object containing a series of information around the current transform + * @param {number} x current mouse x position, canvas normalized + * @param {number} y current mouse y position, canvas normalized + * @return {Boolean} true if the translation occurred + */ + function dragHandler(eventData, transform, x, y) { + var target = transform.target, + newLeft = x - transform.offsetX, + newTop = y - transform.offsetY, + moveX = !target.get('lockMovementX') && target.left !== newLeft, + moveY = !target.get('lockMovementY') && target.top !== newTop; + moveX && target.set('left', newLeft); + moveY && target.set('top', newTop); + if (moveX || moveY) { + fireEvent('moving', commonEventInfo(eventData, transform, x, y)); + } + return moveX || moveY; + } + + controls.scaleCursorStyleHandler = scaleCursorStyleHandler; + controls.skewCursorStyleHandler = skewCursorStyleHandler; + controls.scaleSkewCursorStyleHandler = scaleSkewCursorStyleHandler; + controls.rotationWithSnapping = wrapWithFireEvent('rotating', wrapWithFixedAnchor(rotationWithSnapping)); + controls.scalingEqually = wrapWithFireEvent('scaling', wrapWithFixedAnchor( scaleObjectFromCorner)); + controls.scalingX = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectX)); + controls.scalingY = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectY)); + controls.scalingYOrSkewingX = scalingYOrSkewingX; + controls.scalingXOrSkewingY = scalingXOrSkewingY; + controls.changeWidth = wrapWithFireEvent('resizing', wrapWithFixedAnchor(changeWidth)); + controls.skewHandlerX = skewHandlerX; + controls.skewHandlerY = skewHandlerY; + controls.dragHandler = dragHandler; + controls.scaleOrSkewActionName = scaleOrSkewActionName; + controls.rotationStyleHandler = rotationStyleHandler; + controls.fireEvent = fireEvent; + controls.wrapWithFixedAnchor = wrapWithFixedAnchor; + controls.wrapWithFireEvent = wrapWithFireEvent; + controls.getLocalPoint = getLocalPoint; + fabric.controlsUtils = controls; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + degreesToRadians = fabric.util.degreesToRadians, + controls = fabric.controlsUtils; + + /** + * Render a round control, as per fabric features. + * This function is written to respect object properties like transparentCorners, cornerSize + * cornerColor, cornerStrokeColor + * plus the addition of offsetY and offsetX. + * @param {CanvasRenderingContext2D} ctx context to render on + * @param {Number} left x coordinate where the control center should be + * @param {Number} top y coordinate where the control center should be + * @param {Object} styleOverride override for fabric.Object controls style + * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls + */ + function renderCircleControl (ctx, left, top, styleOverride, fabricObject) { + styleOverride = styleOverride || {}; + var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize, + ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize, + transparentCorners = typeof styleOverride.transparentCorners !== 'undefined' ? + styleOverride.transparentCorners : fabricObject.transparentCorners, + methodName = transparentCorners ? 'stroke' : 'fill', + stroke = !transparentCorners && (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor), + myLeft = left, + myTop = top, size; + ctx.save(); + ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor; + ctx.strokeStyle = styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor; + // as soon as fabric react v5, remove ie11, use proper ellipse code. + if (xSize > ySize) { + size = xSize; + ctx.scale(1.0, ySize / xSize); + myTop = top * xSize / ySize; + } + else if (ySize > xSize) { + size = ySize; + ctx.scale(xSize / ySize, 1.0); + myLeft = left * ySize / xSize; + } + else { + size = xSize; + } + // this is still wrong + ctx.lineWidth = 1; + ctx.beginPath(); + ctx.arc(myLeft, myTop, size / 2, 0, 2 * Math.PI, false); + ctx[methodName](); + if (stroke) { + ctx.stroke(); + } + ctx.restore(); + } + + /** + * Render a square control, as per fabric features. + * This function is written to respect object properties like transparentCorners, cornerSize + * cornerColor, cornerStrokeColor + * plus the addition of offsetY and offsetX. + * @param {CanvasRenderingContext2D} ctx context to render on + * @param {Number} left x coordinate where the control center should be + * @param {Number} top y coordinate where the control center should be + * @param {Object} styleOverride override for fabric.Object controls style + * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls + */ + function renderSquareControl(ctx, left, top, styleOverride, fabricObject) { + styleOverride = styleOverride || {}; + var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize, + ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize, + transparentCorners = typeof styleOverride.transparentCorners !== 'undefined' ? + styleOverride.transparentCorners : fabricObject.transparentCorners, + methodName = transparentCorners ? 'stroke' : 'fill', + stroke = !transparentCorners && ( + styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor + ), xSizeBy2 = xSize / 2, ySizeBy2 = ySize / 2; + ctx.save(); + ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor; + ctx.strokeStyle = styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor; + // this is still wrong + ctx.lineWidth = 1; + ctx.translate(left, top); + ctx.rotate(degreesToRadians(fabricObject.angle)); + // this does not work, and fixed with ( && ) does not make sense. + // to have real transparent corners we need the controls on upperCanvas + // transparentCorners || ctx.clearRect(-xSizeBy2, -ySizeBy2, xSize, ySize); + ctx[methodName + 'Rect'](-xSizeBy2, -ySizeBy2, xSize, ySize); + if (stroke) { + ctx.strokeRect(-xSizeBy2, -ySizeBy2, xSize, ySize); + } + ctx.restore(); + } + + controls.renderCircleControl = renderCircleControl; + controls.renderSquareControl = renderSquareControl; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }); + + function Control(options) { + for (var i in options) { + this[i] = options[i]; + } + } + + fabric.Control = Control; + + fabric.Control.prototype = /** @lends fabric.Control.prototype */ { + + /** + * keep track of control visibility. + * mainly for backward compatibility. + * if you do not want to see a control, you can remove it + * from the controlset. + * @type {Boolean} + * @default true */ - toObject: function (propertiesToInclude) { - return this.callSuper('toObject', ['rx', 'ry'].concat(propertiesToInclude)); - }, - /* _TO_SVG_START_ */ + visible: true, + /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance + * Name of the action that the control will likely execute. + * This is optional. FabricJS uses to identify what the user is doing for some + * extra optimizations. If you are writing a custom control and you want to know + * somewhere else in the code what is going on, you can use this string here. + * you can also provide a custom getActionName if your control run multiple actions + * depending on some external state. + * default to scale since is the most common, used on 4 corners by default + * @type {String} + * @default 'scale' + */ + actionName: 'scale', + + /** + * Drawing angle of the control. + * NOT used for now, but name marked as needed for internal logic + * example: to reuse the same drawing function for different rotated controls + * @type {Number} + * @default 0 */ - _toSVG: function () { - const { width, height, rx, ry } = this; - return [ - '\n', - ]; - }, - /* _TO_SVG_END_ */ -}); -/* _FROM_SVG_START_ */ -/** - * List of attribute names to account for when parsing SVG element (used by `Rect.fromElement`) - * @static - * @memberOf Rect - * @see: http://www.w3.org/TR/SVG/shapes.html#RectElement - */ -Rect$1.ATTRIBUTE_NAMES = fabric$1.SHARED_ATTRIBUTES.concat('x y rx ry width height'.split(' ')); -/** - * Returns {@link Rect} instance from an SVG element - * @static - * @memberOf Rect - * @param {SVGElement} element Element to parse - * @param {Function} callback callback function invoked after parsing - * @param {Object} [options] Options object - */ -Rect$1.fromElement = function (element, callback, options = {}) { - if (!element) { - return callback(null); - } - const _a = fabric$1.parseAttributes(element, Rect$1.ATTRIBUTE_NAMES), { left = 0, top = 0, width = 0, height = 0, visible = true } = _a, restOfparsedAttributes = __rest(_a, ["left", "top", "width", "height", "visible"]); - const rect = new Rect$1(Object.assign(Object.assign(Object.assign({}, options), restOfparsedAttributes), { left, - top, - width, - height, visible: Boolean(visible && width && height) })); - callback(rect); -}; -/* _FROM_SVG_END_ */ -/** - * Returns {@link Rect} instance from an object representation - * @static - * @memberOf Rect - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ -Rect$1.fromObject = (object) => fabric$1.Object._fromObject(Rect$1, object); -fabric$1.Rect = Rect$1; - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, toFixed = fabric.util.toFixed, projectStrokeOnPoints = fabric.util.projectStrokeOnPoints; - /** - * Polyline class - * @class fabric.Polyline - * @extends fabric.Object - * @see {@link fabric.Polyline#initialize} for constructor definition - */ - fabric.Polyline = fabric.util.createClass(fabric.Object, - /** @lends fabric.Polyline.prototype */ { - /** - * Type of an object - * @type String - * @default - */ - type: 'polyline', - /** - * Points array - * @type Array - * @default - */ - points: null, - /** - * WARNING: Feature in progress - * Calculate the exact bounding box taking in account strokeWidth on acute angles - * this will be turned to true by default on fabric 6.0 - * maybe will be left in as an optimization since calculations may be slow - * @deprecated - * @type Boolean - * @default false - */ - exactBoundingBox: false, - cacheProperties: fabric.Object.prototype.cacheProperties.concat('points'), - /** - * Constructor - * @param {Array} points Array of points (where each point is an object with x and y) - * @param {Object} [options] Options object - * @return {fabric.Polyline} thisArg - * @example - * var poly = new fabric.Polyline([ - * { x: 10, y: 10 }, - * { x: 50, y: 30 }, - * { x: 40, y: 70 }, - * { x: 60, y: 50 }, - * { x: 100, y: 150 }, - * { x: 40, y: 100 } - * ], { - * stroke: 'red', - * left: 100, - * top: 100 - * }); - */ - initialize: function (points, options) { - options = options || {}; - this.points = points || []; - this.callSuper('initialize', options); - this._setPositionDimensions(options); - }, - /** - * @private - */ - _projectStrokeOnPoints: function () { - return projectStrokeOnPoints(this.points, this, true); - }, - _setPositionDimensions: function (options) { - options || (options = {}); - var calcDim = this._calcDimensions(options), correctLeftTop, correctSize = this.exactBoundingBox ? this.strokeWidth : 0; - this.width = calcDim.width - correctSize; - this.height = calcDim.height - correctSize; - if (!options.fromSVG) { - correctLeftTop = this.translateToGivenOrigin({ - // this looks bad, but is one way to keep it optional for now. - x: calcDim.left - this.strokeWidth / 2 + correctSize / 2, - y: calcDim.top - this.strokeWidth / 2 + correctSize / 2, - }, 'left', 'top', this.originX, this.originY); - } - if (typeof options.left === 'undefined') { - this.left = options.fromSVG ? calcDim.left : correctLeftTop.x; - } - if (typeof options.top === 'undefined') { - this.top = options.fromSVG ? calcDim.top : correctLeftTop.y; - } - this.pathOffset = { - x: calcDim.left + this.width / 2 + correctSize / 2, - y: calcDim.top + this.height / 2 + correctSize / 2, - }; - }, - /** - * Calculate the polygon min and max point from points array, - * returning an object with left, top, width, height to measure the - * polygon size - * @return {Object} object.left X coordinate of the polygon leftmost point - * @return {Object} object.top Y coordinate of the polygon topmost point - * @return {Object} object.width distance between X coordinates of the polygon leftmost and rightmost point - * @return {Object} object.height distance between Y coordinates of the polygon topmost and bottommost point - * @private - */ - _calcDimensions: function () { - const points = this.exactBoundingBox - ? this._projectStrokeOnPoints() - : this.points.map((p) => new Point(p)); - if (points.length === 0) { - return makeBoundingBoxFromPoints([new Point(0, 0)]); - } - return makeBoundingBoxFromPoints(points); - }, - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toObject: function (propertiesToInclude) { - return extend(this.callSuper('toObject', propertiesToInclude), { - points: this.points.concat(), - }); - }, - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function () { - var points = [], diffX = this.pathOffset.x, diffY = this.pathOffset.y, NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; - for (var i = 0, len = this.points.length; i < len; i++) { - points.push(toFixed(this.points[i].x - diffX, NUM_FRACTION_DIGITS), ',', toFixed(this.points[i].y - diffY, NUM_FRACTION_DIGITS), ' '); - } - return [ - '<' + this.type + ' ', - 'COMMON_PARTS', - 'points="', - points.join(''), - '" />\n', - ]; - }, - /* _TO_SVG_END_ */ - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - commonRender: function (ctx) { - var point, len = this.points.length, x = this.pathOffset.x, y = this.pathOffset.y; - if (!len || isNaN(this.points[len - 1].y)) { - // do not draw if no points or odd points - // NaN comes from parseFloat of a empty string in parser - return false; - } - ctx.beginPath(); - ctx.moveTo(this.points[0].x - x, this.points[0].y - y); - for (var i = 0; i < len; i++) { - point = this.points[i]; - ctx.lineTo(point.x - x, point.y - y); - } - return true; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function (ctx) { - if (!this.commonRender(ctx)) { - return; - } - this._renderPaintInOrder(ctx); - }, - /** - * Returns complexity of an instance - * @return {Number} complexity of this instance - */ - complexity: function () { - return this.get('points').length; - }, - }); - /* _FROM_SVG_START_ */ + angle: 0, + /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Polyline.fromElement}) - * @static - * @memberOf fabric.Polyline - * @see: http://www.w3.org/TR/SVG/shapes.html#PolylineElement + * Relative position of the control. X + * 0,0 is the center of the Object, while -0.5 (left) or 0.5 (right) are the extremities + * of the bounding box. + * @type {Number} + * @default 0 */ - fabric.Polyline.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(); + x: 0, + /** - * Returns fabric.Polyline instance from an SVG element - * @static - * @memberOf fabric.Polyline - * @param {SVGElement} element Element to parser - * @param {Function} callback callback function invoked after parsing - * @param {Object} [options] Options object + * Relative position of the control. Y + * 0,0 is the center of the Object, while -0.5 (top) or 0.5 (bottom) are the extremities + * of the bounding box. + * @type {Number} + * @default 0 */ - fabric.Polyline.fromElementGenerator = function (_class) { - return function (element, callback, options) { - if (!element) { - return callback(null); - } - options || (options = {}); - var points = fabric.parsePointsAttribute(element.getAttribute('points')), parsedAttributes = fabric.parseAttributes(element, fabric[_class].ATTRIBUTE_NAMES); - parsedAttributes.fromSVG = true; - callback(new fabric[_class](points, extend(parsedAttributes, options))); - }; - }; - fabric.Polyline.fromElement = - fabric.Polyline.fromElementGenerator('Polyline'); - /* _FROM_SVG_END_ */ + y: 0, + /** - * Returns fabric.Polyline instance from an object representation - * @static - * @memberOf fabric.Polyline - * @param {Object} object Object to create an instance from - * @returns {Promise} + * Horizontal offset of the control from the defined position. In pixels + * Positive offset moves the control to the right, negative to the left. + * It used when you want to have position of control that does not scale with + * the bounding box. Example: rotation control is placed at x:0, y: 0.5 on + * the boundindbox, with an offset of 30 pixels vertically. Those 30 pixels will + * stay 30 pixels no matter how the object is big. Another example is having 2 + * controls in the corner, that stay in the same position when the object scale. + * of the bounding box. + * @type {Number} + * @default 0 */ - fabric.Polyline.fromObject = function (object) { - return fabric.Object._fromObject(fabric.Polyline, object, { - extraParam: 'points', - }); - }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), projectStrokeOnPoints = fabric.util.projectStrokeOnPoints; - /** - * Polygon class - * @class fabric.Polygon - * @extends fabric.Polyline - * @see {@link fabric.Polygon#initialize} for constructor definition - */ - fabric.Polygon = fabric.util.createClass(fabric.Polyline, - /** @lends fabric.Polygon.prototype */ { - /** - * Type of an object - * @type String - * @default - */ - type: 'polygon', - /** - * @private - */ - _projectStrokeOnPoints: function () { - return projectStrokeOnPoints(this.points, this); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function (ctx) { - if (!this.commonRender(ctx)) { - return; - } - ctx.closePath(); - this._renderPaintInOrder(ctx); - }, - }); - /* _FROM_SVG_START_ */ + offsetX: 0, + /** - * List of attribute names to account for when parsing SVG element (used by `fabric.Polygon.fromElement`) - * @static - * @memberOf fabric.Polygon - * @see: http://www.w3.org/TR/SVG/shapes.html#PolygonElement + * Vertical offset of the control from the defined position. In pixels + * Positive offset moves the control to the bottom, negative to the top. + * @type {Number} + * @default 0 */ - fabric.Polygon.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(); + offsetY: 0, + /** - * Returns {@link fabric.Polygon} instance from an SVG element - * @static - * @memberOf fabric.Polygon - * @param {SVGElement} element Element to parse - * @param {Function} callback callback function invoked after parsing - * @param {Object} [options] Options object + * Sets the length of the control. If null, defaults to object's cornerSize. + * Expects both sizeX and sizeY to be set when set. + * @type {?Number} + * @default null */ - fabric.Polygon.fromElement = fabric.Polyline.fromElementGenerator('Polygon'); - /* _FROM_SVG_END_ */ + sizeX: null, + /** - * Returns fabric.Polygon instance from an object representation - * @static - * @memberOf fabric.Polygon - * @param {Object} object Object to create an instance from - * @returns {Promise} + * Sets the height of the control. If null, defaults to object's cornerSize. + * Expects both sizeX and sizeY to be set when set. + * @type {?Number} + * @default null */ - fabric.Polygon.fromObject = function (object) { - return fabric.Object._fromObject(fabric.Polygon, object, { - extraParam: 'points', - }); - }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, clone = fabric.util.object.clone, toFixed = fabric.util.toFixed; - /** - * Path class - * @class fabric.Path - * @extends fabric.Object - * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#path_and_pathgroup} - * @see {@link fabric.Path#initialize} for constructor definition - */ - fabric.Path = fabric.util.createClass(fabric.Object, - /** @lends fabric.Path.prototype */ { - /** - * Type of an object - * @type String - * @default - */ - type: 'path', - /** - * Array of path points - * @type Array - * @default - */ - path: null, - cacheProperties: fabric.Object.prototype.cacheProperties.concat('path', 'fillRule'), - stateProperties: fabric.Object.prototype.stateProperties.concat('path'), - /** - * Constructor - * @param {Array|String} path Path data (sequence of coordinates and corresponding "command" tokens) - * @param {Object} [options] Options object - * @return {fabric.Path} thisArg - */ - initialize: function (path, options) { - options = clone(options || {}); - delete options.path; - this.callSuper('initialize', options); - this._setPath(path || [], options); - }, - /** - * @private - * @param {Array|String} path Path data (sequence of coordinates and corresponding "command" tokens) - * @param {Object} [options] Options object - */ - _setPath: function (path, options) { - this.path = fabric.util.makePathSimpler(Array.isArray(path) ? path : fabric.util.parsePath(path)); - fabric.Polyline.prototype._setPositionDimensions.call(this, options || {}); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx context to render path on - */ - _renderPathCommands: function (ctx) { - var current, // current instruction - subpathStartX = 0, subpathStartY = 0, x = 0, // current x - y = 0, // current y - controlX = 0, // current control point x - controlY = 0, // current control point y - l = -this.pathOffset.x, t = -this.pathOffset.y; - ctx.beginPath(); - for (var i = 0, len = this.path.length; i < len; ++i) { - current = this.path[i]; - switch (current[0] // first letter - ) { - case 'L': // lineto, absolute - x = current[1]; - y = current[2]; - ctx.lineTo(x + l, y + t); - break; - case 'M': // moveTo, absolute - x = current[1]; - y = current[2]; - subpathStartX = x; - subpathStartY = y; - ctx.moveTo(x + l, y + t); - break; - case 'C': // bezierCurveTo, absolute - x = current[5]; - y = current[6]; - controlX = current[3]; - controlY = current[4]; - ctx.bezierCurveTo(current[1] + l, current[2] + t, controlX + l, controlY + t, x + l, y + t); - break; - case 'Q': // quadraticCurveTo, absolute - ctx.quadraticCurveTo(current[1] + l, current[2] + t, current[3] + l, current[4] + t); - x = current[3]; - y = current[4]; - controlX = current[1]; - controlY = current[2]; - break; - case 'z': - case 'Z': - x = subpathStartX; - y = subpathStartY; - ctx.closePath(); - break; - } - } - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx context to render path on - */ - _render: function (ctx) { - this._renderPathCommands(ctx); - this._renderPaintInOrder(ctx); - }, - /** - * Returns string representation of an instance - * @return {String} string representation of an instance - */ - toString: function () { - return ('#'); - }, - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function (propertiesToInclude) { - return extend(this.callSuper('toObject', propertiesToInclude), { - path: this.path.map(function (item) { - return item.slice(); - }), - }); - }, - /** - * Returns dataless object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toDatalessObject: function (propertiesToInclude) { - var o = this.toObject(['sourcePath'].concat(propertiesToInclude)); - if (o.sourcePath) { - delete o.path; - } - return o; - }, - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function () { - var path = fabric.util.joinPath(this.path); - return [ - '\n', - ]; - }, - _getOffsetTransform: function () { - var digits = config.NUM_FRACTION_DIGITS; - return (' translate(' + - toFixed(-this.pathOffset.x, digits) + - ', ' + - toFixed(-this.pathOffset.y, digits) + - ')'); - }, - /** - * Returns svg clipPath representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toClipPathSVG: function (reviver) { - var additionalTransform = this._getOffsetTransform(); - return ('\t' + - this._createBaseClipPathSVGMarkup(this._toSVG(), { - reviver: reviver, - additionalTransform: additionalTransform, - })); - }, - /** - * Returns svg representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toSVG: function (reviver) { - var additionalTransform = this._getOffsetTransform(); - return this._createBaseSVGMarkup(this._toSVG(), { - reviver: reviver, - additionalTransform: additionalTransform, - }); - }, - /* _TO_SVG_END_ */ - /** - * Returns number representation of an instance complexity - * @return {Number} complexity of this instance - */ - complexity: function () { - return this.path.length; - }, - /** - * @private - */ - _calcDimensions: function () { - var aX = [], aY = [], current, // current instruction - subpathStartX = 0, subpathStartY = 0, x = 0, // current x - y = 0, // current y - bounds; - for (var i = 0, len = this.path.length; i < len; ++i) { - current = this.path[i]; - switch (current[0] // first letter - ) { - case 'L': // lineto, absolute - x = current[1]; - y = current[2]; - bounds = []; - break; - case 'M': // moveTo, absolute - x = current[1]; - y = current[2]; - subpathStartX = x; - subpathStartY = y; - bounds = []; - break; - case 'C': // bezierCurveTo, absolute - bounds = fabric.util.getBoundsOfCurve(x, y, current[1], current[2], current[3], current[4], current[5], current[6]); - x = current[5]; - y = current[6]; - break; - case 'Q': // quadraticCurveTo, absolute - bounds = fabric.util.getBoundsOfCurve(x, y, current[1], current[2], current[1], current[2], current[3], current[4]); - x = current[3]; - y = current[4]; - break; - case 'z': - case 'Z': - x = subpathStartX; - y = subpathStartY; - break; - } - bounds.forEach(function (point) { - aX.push(point.x); - aY.push(point.y); - }); - aX.push(x); - aY.push(y); - } - var minX = Math.min(...aX) || 0, minY = Math.min(...aY) || 0, maxX = Math.max(...aX) || 0, maxY = Math.max(...aY) || 0, deltaX = maxX - minX, deltaY = maxY - minY; - return { - left: minX, - top: minY, - width: deltaX, - height: deltaY, - }; - }, - }); + sizeY: null, + /** - * Creates an instance of fabric.Path from an object - * @static - * @memberOf fabric.Path - * @param {Object} object - * @returns {Promise} + * Sets the length of the touch area of the control. If null, defaults to object's touchCornerSize. + * Expects both touchSizeX and touchSizeY to be set when set. + * @type {?Number} + * @default null */ - fabric.Path.fromObject = function (object) { - return fabric.Object._fromObject(fabric.Path, object, { - extraParam: 'path', - }); - }; - /* _FROM_SVG_START_ */ + touchSizeX: null, + /** - * List of attribute names to account for when parsing SVG element (used by `fabric.Path.fromElement`) - * @static - * @memberOf fabric.Path - * @see http://www.w3.org/TR/SVG/paths.html#PathElement + * Sets the height of the touch area of the control. If null, defaults to object's touchCornerSize. + * Expects both touchSizeX and touchSizeY to be set when set. + * @type {?Number} + * @default null */ - fabric.Path.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(['d']); + touchSizeY: null, + /** - * Creates an instance of fabric.Path from an SVG element - * @static - * @memberOf fabric.Path - * @param {SVGElement} element to parse - * @param {Function} callback Callback to invoke when an fabric.Path instance is created - * @param {Object} [options] Options object - * @param {Function} [callback] Options callback invoked after parsing is finished + * Css cursor style to display when the control is hovered. + * if the method `cursorStyleHandler` is provided, this property is ignored. + * @type {String} + * @default 'crosshair' */ - fabric.Path.fromElement = function (element, callback, options) { - var parsedAttributes = fabric.parseAttributes(element, fabric.Path.ATTRIBUTE_NAMES); - parsedAttributes.fromSVG = true; - callback(new fabric.Path(parsedAttributes.d, extend(parsedAttributes, options))); - }; - /* _FROM_SVG_END_ */ -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), multiplyTransformMatrices = fabric.util.multiplyTransformMatrices, invertTransform = fabric.util.invertTransform, transformPoint = fabric.util.transformPoint, applyTransformToObject = fabric.util.applyTransformToObject, degreesToRadians = fabric.util.degreesToRadians, clone = fabric.util.object.clone; - /** - * Group class - * @class fabric.Group - * @extends fabric.Object - * @mixes fabric.Collection - * @fires layout once layout completes - * @see {@link fabric.Group#initialize} for constructor definition - */ - fabric.Group = fabric.util.createClass(fabric.Object, fabric.Collection, - /** @lends fabric.Group.prototype */ { - /** - * Type of an object - * @type string - * @default - */ - type: 'group', - /** - * Specifies the **layout strategy** for instance - * Used by `getLayoutStrategyResult` to calculate layout - * `fit-content`, `fit-content-lazy`, `fixed`, `clip-path` are supported out of the box - * @type string - * @default - */ - layout: 'fit-content', - /** - * Width of stroke - * @type Number - */ - strokeWidth: 0, - /** - * List of properties to consider when checking if state - * of an object is changed (fabric.Object#hasStateChanged) - * as well as for history (undo/redo) purposes - * @type string[] - */ - stateProperties: fabric.Object.prototype.stateProperties.concat('layout'), - /** - * Used to optimize performance - * set to `false` if you don't need contained objects to be targets of events - * @default - * @type boolean - */ - subTargetCheck: false, - /** - * Used to allow targeting of object inside groups. - * set to true if you want to select an object inside a group.\ - * **REQUIRES** `subTargetCheck` set to true - * @default - * @type boolean - */ - interactive: false, - /** - * Used internally to optimize performance - * Once an object is selected, instance is rendered without the selected object. - * This way instance is cached only once for the entire interaction with the selected object. - * @private - */ - _activeObjects: undefined, - /** - * Constructor - * - * @param {fabric.Object[]} [objects] instance objects - * @param {Object} [options] Options object - * @param {boolean} [objectsRelativeToGroup] true if objects exist in group coordinate plane - * @return {fabric.Group} thisArg - */ - initialize: function (objects, options, objectsRelativeToGroup) { - this._objects = objects || []; - this._activeObjects = []; - this.__objectMonitor = this.__objectMonitor.bind(this); - this.__objectSelectionTracker = this.__objectSelectionMonitor.bind(this, true); - this.__objectSelectionDisposer = this.__objectSelectionMonitor.bind(this, false); - this._firstLayoutDone = false; - // setting angle, skewX, skewY must occur after initial layout - this.callSuper('initialize', Object.assign({}, options, { angle: 0, skewX: 0, skewY: 0 })); - this.forEachObject(function (object) { - this.enterGroup(object, false); - }, this); - this._applyLayoutStrategy({ - type: 'initialization', - options: options, - objectsRelativeToGroup: objectsRelativeToGroup, - }); - }, - /** - * @private - * @param {string} key - * @param {*} value - */ - _set: function (key, value) { - var prev = this[key]; - this.callSuper('_set', key, value); - if (key === 'canvas' && prev !== value) { - this.forEachObject(function (object) { - object._set(key, value); - }); - } - if (key === 'layout' && prev !== value) { - this._applyLayoutStrategy({ - type: 'layout_change', - layout: value, - prevLayout: prev, - }); - } - if (key === 'interactive') { - this.forEachObject(this._watchObject.bind(this, value)); - } - return this; - }, - /** - * @private - */ - _shouldSetNestedCoords: function () { - return this.subTargetCheck; - }, - /** - * Override this method to enhance performance (for groups with a lot of objects). - * If Overriding, be sure not pass illegal objects to group - it will break your app. - * @private - */ - _filterObjectsBeforeEnteringGroup: function (objects) { - return objects.filter(function (object, index, array) { - // can enter AND is the first occurrence of the object in the passed args (to prevent adding duplicates) - return this.canEnterGroup(object) && array.indexOf(object) === index; - }, this); - }, - /** - * Add objects - * @param {...fabric.Object} objects - */ - add: function () { - var allowedObjects = this._filterObjectsBeforeEnteringGroup(Array.from(arguments)); - fabric.Collection.add.call(this, allowedObjects, this._onObjectAdded); - this._onAfterObjectsChange('added', allowedObjects); - }, - /** - * Inserts an object into collection at specified index - * @param {fabric.Object | fabric.Object[]} objects Object to insert - * @param {Number} index Index to insert object at - */ - insertAt: function (objects, index) { - var allowedObjects = this._filterObjectsBeforeEnteringGroup(Array.isArray(objects) ? objects : [objects]); - fabric.Collection.insertAt.call(this, allowedObjects, index, this._onObjectAdded); - this._onAfterObjectsChange('added', allowedObjects); - }, - /** - * Remove objects - * @param {...fabric.Object} objects - * @returns {fabric.Object[]} removed objects - */ - remove: function () { - var removed = fabric.Collection.remove.call(this, arguments, this._onObjectRemoved); - this._onAfterObjectsChange('removed', removed); - return removed; - }, - /** - * Remove all objects - * @returns {fabric.Object[]} removed objects - */ - removeAll: function () { - this._activeObjects = []; - return this.remove.apply(this, this._objects.slice()); - }, - /** - * invalidates layout on object modified - * @private - */ - __objectMonitor: function (opt) { - this._applyLayoutStrategy(Object.assign({}, opt, { - type: 'object_modified', - })); - this._set('dirty', true); - }, - /** - * keeps track of the selected objects - * @private - */ - __objectSelectionMonitor: function (selected, opt) { - var object = opt.target; - if (selected) { - this._activeObjects.push(object); - this._set('dirty', true); - } - else if (this._activeObjects.length > 0) { - var index = this._activeObjects.indexOf(object); - if (index > -1) { - this._activeObjects.splice(index, 1); - this._set('dirty', true); - } - } - }, - /** - * @private - * @param {boolean} watch - * @param {fabric.Object} object - */ - _watchObject: function (watch, object) { - var directive = watch ? 'on' : 'off'; - // make sure we listen only once - watch && this._watchObject(false, object); - object[directive]('changed', this.__objectMonitor); - object[directive]('modified', this.__objectMonitor); - object[directive]('selected', this.__objectSelectionTracker); - object[directive]('deselected', this.__objectSelectionDisposer); - }, - /** - * Checks if object can enter group and logs relevant warnings - * @private - * @param {fabric.Object} object - * @returns - */ - canEnterGroup: function (object) { - if (object === this || this.isDescendantOf(object)) { - // prevent circular object tree - /* _DEV_MODE_START_ */ - console.error('fabric.Group: circular object trees are not supported, this call has no effect'); - /* _DEV_MODE_END_ */ - return false; - } - else if (this._objects.indexOf(object) !== -1) { - // is already in the objects array - /* _DEV_MODE_START_ */ - console.error('fabric.Group: duplicate objects are not supported inside group, this call has no effect'); - /* _DEV_MODE_END_ */ - return false; - } - return true; - }, - /** - * @private - * @param {fabric.Object} object - * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane - * @returns {boolean} true if object entered group - */ - enterGroup: function (object, removeParentTransform) { - if (object.group) { - object.group.remove(object); - } - this._enterGroup(object, removeParentTransform); - return true; - }, - /** - * @private - * @param {fabric.Object} object - * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane - */ - _enterGroup: function (object, removeParentTransform) { - if (removeParentTransform) { - // can this be converted to utils (sendObjectToPlane)? - applyTransformToObject(object, multiplyTransformMatrices(invertTransform(this.calcTransformMatrix()), object.calcTransformMatrix())); - } - this._shouldSetNestedCoords() && object.setCoords(); - object._set('group', this); - object._set('canvas', this.canvas); - this.interactive && this._watchObject(true, object); - var activeObject = this.canvas && - this.canvas.getActiveObject && - this.canvas.getActiveObject(); - // if we are adding the activeObject in a group - if (activeObject && - (activeObject === object || object.isDescendantOf(activeObject))) { - this._activeObjects.push(object); - } - }, - /** - * @private - * @param {fabric.Object} object - * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it - */ - exitGroup: function (object, removeParentTransform) { - this._exitGroup(object, removeParentTransform); - object._set('canvas', undefined); - }, - /** - * @private - * @param {fabric.Object} object - * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it - */ - _exitGroup: function (object, removeParentTransform) { - object._set('group', undefined); - if (!removeParentTransform) { - applyTransformToObject(object, multiplyTransformMatrices(this.calcTransformMatrix(), object.calcTransformMatrix())); - object.setCoords(); - } - this._watchObject(false, object); - var index = this._activeObjects.length > 0 - ? this._activeObjects.indexOf(object) - : -1; - if (index > -1) { - this._activeObjects.splice(index, 1); - } - }, - /** - * @private - * @param {'added'|'removed'} type - * @param {fabric.Object[]} targets - */ - _onAfterObjectsChange: function (type, targets) { - this._applyLayoutStrategy({ - type: type, - targets: targets, - }); - this._set('dirty', true); - }, - /** - * @private - * @param {fabric.Object} object - */ - _onObjectAdded: function (object) { - this.enterGroup(object, true); - object.fire('added', { target: this }); - }, - /** - * @private - * @param {fabric.Object} object - */ - _onRelativeObjectAdded: function (object) { - this.enterGroup(object, false); - object.fire('added', { target: this }); - }, - /** - * @private - * @param {fabric.Object} object - * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it - */ - _onObjectRemoved: function (object, removeParentTransform) { - this.exitGroup(object, removeParentTransform); - object.fire('removed', { target: this }); - }, - /** - * Decide if the object should cache or not. Create its own cache level - * needsItsOwnCache should be used when the object drawing method requires - * a cache step. None of the fabric classes requires it. - * Generally you do not cache objects in groups because the group is already cached. - * @return {Boolean} - */ - shouldCache: function () { - var ownCache = fabric.Object.prototype.shouldCache.call(this); - if (ownCache) { - for (var i = 0; i < this._objects.length; i++) { - if (this._objects[i].willDrawShadow()) { - this.ownCaching = false; - return false; - } - } - } - return ownCache; - }, - /** - * Check if this object or a child object will cast a shadow - * @return {Boolean} - */ - willDrawShadow: function () { - if (fabric.Object.prototype.willDrawShadow.call(this)) { - return true; - } - for (var i = 0; i < this._objects.length; i++) { - if (this._objects[i].willDrawShadow()) { - return true; - } - } - return false; - }, - /** - * Check if instance or its group are caching, recursively up - * @return {Boolean} - */ - isOnACache: function () { - return this.ownCaching || (!!this.group && this.group.isOnACache()); - }, - /** - * Execute the drawing operation for an object on a specified context - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - drawObject: function (ctx) { - this._renderBackground(ctx); - for (var i = 0; i < this._objects.length; i++) { - this._objects[i].render(ctx); - } - this._drawClipPath(ctx, this.clipPath); - }, - /** - * Check if cache is dirty - */ - isCacheDirty: function (skipCanvas) { - if (this.callSuper('isCacheDirty', skipCanvas)) { - return true; - } - if (!this.statefullCache) { - return false; - } - for (var i = 0; i < this._objects.length; i++) { - if (this._objects[i].isCacheDirty(true)) { - if (this._cacheCanvas) { - // if this group has not a cache canvas there is nothing to clean - var x = this.cacheWidth / this.zoomX, y = this.cacheHeight / this.zoomY; - this._cacheContext.clearRect(-x / 2, -y / 2, x, y); - } - return true; - } - } - return false; - }, - /** - * @override - * @return {Boolean} - */ - setCoords: function () { - this.callSuper('setCoords'); - this._shouldSetNestedCoords() && - this.forEachObject(function (object) { - object.setCoords(); - }); - }, - /** - * Renders instance on a given context - * @param {CanvasRenderingContext2D} ctx context to render instance on - */ - render: function (ctx) { - // used to inform objects not to double opacity - this._transformDone = true; - this.callSuper('render', ctx); - this._transformDone = false; - }, - /** - * @public - * @param {Partial & { layout?: string }} [context] pass values to use for layout calculations - */ - triggerLayout: function (context) { - if (context && context.layout) { - context.prevLayout = this.layout; - this.layout = context.layout; - } - this._applyLayoutStrategy({ type: 'imperative', context: context }); - }, - /** - * @private - * @param {fabric.Object} object - * @param {Point} diff - */ - _adjustObjectPosition: function (object, diff) { - object.set({ - left: object.left + diff.x, - top: object.top + diff.y, - }); - }, - /** - * initial layout logic: - * calculate bbox of objects (if necessary) and translate it according to options received from the constructor (left, top, width, height) - * so it is placed in the center of the bbox received from the constructor - * - * @private - * @param {LayoutContext} context - */ - _applyLayoutStrategy: function (context) { - var isFirstLayout = context.type === 'initialization'; - if (!isFirstLayout && !this._firstLayoutDone) { - // reject layout requests before initialization layout - return; - } - var options = isFirstLayout && context.options; - var initialTransform = options && { - angle: options.angle || 0, - skewX: options.skewX || 0, - skewY: options.skewY || 0, - }; - var center = this.getRelativeCenterPoint(); - var result = this.getLayoutStrategyResult(this.layout, this._objects.concat(), context); - if (result) { - // handle positioning - var newCenter = new Point(result.centerX, result.centerY); - var vector = center - .subtract(newCenter) - .add(new Point(result.correctionX || 0, result.correctionY || 0)); - var diff = transformPoint(vector, invertTransform(this.calcOwnMatrix()), true); - // set dimensions - this.set({ width: result.width, height: result.height }); - // adjust objects to account for new center - !context.objectsRelativeToGroup && - this.forEachObject(function (object) { - this._adjustObjectPosition(object, diff); - }, this); - // clip path as well - !isFirstLayout && - this.layout !== 'clip-path' && - this.clipPath && - !this.clipPath.absolutePositioned && - this._adjustObjectPosition(this.clipPath, diff); - if (!newCenter.eq(center) || initialTransform) { - // set position - this.setPositionByOrigin(newCenter, 'center', 'center'); - initialTransform && this.set(initialTransform); - this.setCoords(); - } - } - else if (isFirstLayout) { - // fill `result` with initial values for the layout hook - result = { - centerX: center.x, - centerY: center.y, - width: this.width, - height: this.height, - }; - initialTransform && this.set(initialTransform); - } - else { - // no `result` so we return - return; - } - // flag for next layouts - this._firstLayoutDone = true; - // fire layout hook and event (event will fire only for layouts after initialization layout) - this.onLayout(context, result); - this.fire('layout', { - context: context, - result: result, - diff: diff, - }); - // recursive up - if (this.group && this.group._applyLayoutStrategy) { - // append the path recursion to context - if (!context.path) { - context.path = []; - } - context.path.push(this); - // all parents should invalidate their layout - this.group._applyLayoutStrategy(context); - } - }, - /** - * Override this method to customize layout. - * If you need to run logic once layout completes use `onLayout` - * @public - * - * @typedef {'initialization'|'object_modified'|'added'|'removed'|'layout_change'|'imperative'} LayoutContextType - * - * @typedef LayoutContext context object with data regarding what triggered the call - * @property {LayoutContextType} type - * @property {fabric.Object[]} [path] array of objects starting from the object that triggered the call to the current one - * - * @typedef LayoutResult positioning and layout data **relative** to instance's parent - * @property {number} centerX new centerX as measured by the containing plane (same as `left` with `originX` set to `center`) - * @property {number} centerY new centerY as measured by the containing plane (same as `top` with `originY` set to `center`) - * @property {number} [correctionX] correctionX to translate objects by, measured as `centerX` - * @property {number} [correctionY] correctionY to translate objects by, measured as `centerY` - * @property {number} width - * @property {number} height - * - * @param {string} layoutDirective - * @param {fabric.Object[]} objects - * @param {LayoutContext} context - * @returns {LayoutResult | undefined} - */ - getLayoutStrategyResult: function (layoutDirective, objects, context) { - // eslint-disable-line no-unused-vars - // `fit-content-lazy` performance enhancement - // skip if instance had no objects before the `added` event because it may have kept layout after removing all previous objects - if (layoutDirective === 'fit-content-lazy' && - context.type === 'added' && - objects.length > context.targets.length) { - // calculate added objects' bbox with existing bbox - var addedObjects = context.targets.concat(this); - return this.prepareBoundingBox(layoutDirective, addedObjects, context); - } - else if (layoutDirective === 'fit-content' || - layoutDirective === 'fit-content-lazy' || - (layoutDirective === 'fixed' && - (context.type === 'initialization' || - context.type === 'imperative'))) { - return this.prepareBoundingBox(layoutDirective, objects, context); - } - else if (layoutDirective === 'clip-path' && this.clipPath) { - var clipPath = this.clipPath; - var clipPathSizeAfter = clipPath._getTransformedDimensions(); - if (clipPath.absolutePositioned && - (context.type === 'initialization' || - context.type === 'layout_change')) { - // we want the center point to exist in group's containing plane - var clipPathCenter = clipPath.getCenterPoint(); - if (this.group) { - // send point from canvas plane to group's containing plane - var inv = invertTransform(this.group.calcTransformMatrix()); - clipPathCenter = transformPoint(clipPathCenter, inv); - } - return { - centerX: clipPathCenter.x, - centerY: clipPathCenter.y, - width: clipPathSizeAfter.x, - height: clipPathSizeAfter.y, - }; - } - else if (!clipPath.absolutePositioned) { - var center; - var clipPathRelativeCenter = clipPath.getRelativeCenterPoint(), - // we want the center point to exist in group's containing plane, so we send it upwards - clipPathCenter = transformPoint(clipPathRelativeCenter, this.calcOwnMatrix(), true); - if (context.type === 'initialization' || - context.type === 'layout_change') { - var bbox = this.prepareBoundingBox(layoutDirective, objects, context) || - {}; - center = new Point(bbox.centerX || 0, bbox.centerY || 0); - return { - centerX: center.x + clipPathCenter.x, - centerY: center.y + clipPathCenter.y, - correctionX: bbox.correctionX - clipPathCenter.x, - correctionY: bbox.correctionY - clipPathCenter.y, - width: clipPath.width, - height: clipPath.height, - }; - } - else { - center = this.getRelativeCenterPoint(); - return { - centerX: center.x + clipPathCenter.x, - centerY: center.y + clipPathCenter.y, - width: clipPathSizeAfter.x, - height: clipPathSizeAfter.y, - }; - } - } - } - else if (layoutDirective === 'svg' && - context.type === 'initialization') { - var bbox = this.getObjectsBoundingBox(objects, true) || {}; - return Object.assign(bbox, { - correctionX: -bbox.offsetX || 0, - correctionY: -bbox.offsetY || 0, - }); - } - }, - /** - * Override this method to customize layout. - * A wrapper around {@link fabric.Group#getObjectsBoundingBox} - * @public - * @param {string} layoutDirective - * @param {fabric.Object[]} objects - * @param {LayoutContext} context - * @returns {LayoutResult | undefined} - */ - prepareBoundingBox: function (layoutDirective, objects, context) { - if (context.type === 'initialization') { - return this.prepareInitialBoundingBox(layoutDirective, objects, context); - } - else if (context.type === 'imperative' && context.context) { - return Object.assign(this.getObjectsBoundingBox(objects) || {}, context.context); - } - else { - return this.getObjectsBoundingBox(objects); - } - }, - /** - * Calculates center taking into account originX, originY while not being sure that width/height are initialized - * @public - * @param {string} layoutDirective - * @param {fabric.Object[]} objects - * @param {LayoutContext} context - * @returns {LayoutResult | undefined} - */ - prepareInitialBoundingBox: function (layoutDirective, objects, context) { - var options = context.options || {}, hasX = typeof options.left === 'number', hasY = typeof options.top === 'number', hasWidth = typeof options.width === 'number', hasHeight = typeof options.height === 'number'; - // performance enhancement - // skip layout calculation if bbox is defined - if ((hasX && - hasY && - hasWidth && - hasHeight && - context.objectsRelativeToGroup) || - objects.length === 0) { - // return nothing to skip layout - return; - } - var bbox = this.getObjectsBoundingBox(objects) || {}; - var width = hasWidth ? this.width : bbox.width || 0, height = hasHeight ? this.height : bbox.height || 0, calculatedCenter = new Point(bbox.centerX || 0, bbox.centerY || 0), origin = new Point(this.resolveOriginX(this.originX), this.resolveOriginY(this.originY)), size = new Point(width, height), strokeWidthVector = this._getTransformedDimensions({ - width: 0, - height: 0, - }), sizeAfter = this._getTransformedDimensions({ - width: width, - height: height, - strokeWidth: 0, - }), bboxSizeAfter = this._getTransformedDimensions({ - width: bbox.width, - height: bbox.height, - strokeWidth: 0, - }), rotationCorrection = new Point(0, 0); - // calculate center and correction - var originT = origin.scalarAdd(0.5); - var originCorrection = sizeAfter.multiply(originT); - var centerCorrection = new Point(hasWidth ? bboxSizeAfter.x / 2 : originCorrection.x, hasHeight ? bboxSizeAfter.y / 2 : originCorrection.y); - var center = new Point(hasX - ? this.left - (sizeAfter.x + strokeWidthVector.x) * origin.x - : calculatedCenter.x - centerCorrection.x, hasY - ? this.top - (sizeAfter.y + strokeWidthVector.y) * origin.y - : calculatedCenter.y - centerCorrection.y); - var offsetCorrection = new Point(hasX - ? center.x - - calculatedCenter.x + - bboxSizeAfter.x * (hasWidth ? 0.5 : 0) - : -(hasWidth - ? (sizeAfter.x - strokeWidthVector.x) * 0.5 - : sizeAfter.x * originT.x), hasY - ? center.y - - calculatedCenter.y + - bboxSizeAfter.y * (hasHeight ? 0.5 : 0) - : -(hasHeight - ? (sizeAfter.y - strokeWidthVector.y) * 0.5 - : sizeAfter.y * originT.y)).add(rotationCorrection); - var correction = new Point(hasWidth ? -sizeAfter.x / 2 : 0, hasHeight ? -sizeAfter.y / 2 : 0).add(offsetCorrection); - return { - centerX: center.x, - centerY: center.y, - correctionX: correction.x, - correctionY: correction.y, - width: size.x, - height: size.y, - }; - }, - /** - * Calculate the bbox of objects relative to instance's containing plane - * @public - * @param {fabric.Object[]} objects - * @returns {LayoutResult | null} bounding box - */ - getObjectsBoundingBox: function (objects, ignoreOffset) { - if (objects.length === 0) { - return null; - } - var objCenter, sizeVector, min, max, a, b; - objects.forEach(function (object, i) { - objCenter = object.getRelativeCenterPoint(); - sizeVector = object._getTransformedDimensions().scalarDivide(2); - if (object.angle) { - var rad = degreesToRadians(object.angle), sin = Math.abs(fabric.util.sin(rad)), cos = Math.abs(fabric.util.cos(rad)), rx = sizeVector.x * cos + sizeVector.y * sin, ry = sizeVector.x * sin + sizeVector.y * cos; - sizeVector = new Point(rx, ry); - } - a = objCenter.subtract(sizeVector); - b = objCenter.add(sizeVector); - if (i === 0) { - min = new Point(Math.min(a.x, b.x), Math.min(a.y, b.y)); - max = new Point(Math.max(a.x, b.x), Math.max(a.y, b.y)); - } - else { - min.setXY(Math.min(min.x, a.x, b.x), Math.min(min.y, a.y, b.y)); - max.setXY(Math.max(max.x, a.x, b.x), Math.max(max.y, a.y, b.y)); - } - }); - var size = max.subtract(min), relativeCenter = ignoreOffset - ? size.scalarDivide(2) - : min.midPointFrom(max), - // we send `relativeCenter` up to group's containing plane - offset = transformPoint(min, this.calcOwnMatrix()), center = transformPoint(relativeCenter, this.calcOwnMatrix()); - return { - offsetX: offset.x, - offsetY: offset.y, - centerX: center.x, - centerY: center.y, - width: size.x, - height: size.y, - }; - }, - /** - * Hook that is called once layout has completed. - * Provided for layout customization, override if necessary. - * Complements `getLayoutStrategyResult`, which is called at the beginning of layout. - * @public - * @param {LayoutContext} context layout context - * @param {LayoutResult} result layout result - */ - onLayout: function ( /* context, result */) { - // override by subclass - }, - /** - * - * @private - * @param {'toObject'|'toDatalessObject'} [method] - * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @returns {fabric.Object[]} serialized objects - */ - __serializeObjects: function (method, propertiesToInclude) { - var _includeDefaultValues = this.includeDefaultValues; - return this._objects - .filter(function (obj) { - return !obj.excludeFromExport; - }) - .map(function (obj) { - var originalDefaults = obj.includeDefaultValues; - obj.includeDefaultValues = _includeDefaultValues; - var data = obj[method || 'toObject'](propertiesToInclude); - obj.includeDefaultValues = originalDefaults; - //delete data.version; - return data; - }); - }, - /** - * Returns object representation of an instance - * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function (propertiesToInclude) { - var obj = this.callSuper('toObject', ['layout', 'subTargetCheck', 'interactive'].concat(propertiesToInclude)); - obj.objects = this.__serializeObjects('toObject', propertiesToInclude); - return obj; - }, - toString: function () { - return '#'; - }, - dispose: function () { - this._activeObjects = []; - this.forEachObject(function (object) { - this._watchObject(false, object); - object.dispose && object.dispose(); - }, this); - this.callSuper('dispose'); - }, - /* _TO_SVG_START_ */ - /** - * @private - */ - _createSVGBgRect: function (reviver) { - if (!this.backgroundColor) { - return ''; - } - var fillStroke = fabric.Rect.prototype._toSVG.call(this, reviver); - var commons = fillStroke.indexOf('COMMON_PARTS'); - fillStroke[commons] = 'for="group" '; - return fillStroke.join(''); - }, - /** - * Returns svg representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - _toSVG: function (reviver) { - var svgString = ['\n']; - var bg = this._createSVGBgRect(reviver); - bg && svgString.push('\t\t', bg); - for (var i = 0; i < this._objects.length; i++) { - svgString.push('\t\t', this._objects[i].toSVG(reviver)); - } - svgString.push('\n'); - return svgString; - }, - /** - * Returns styles-string for svg-export, specific version for group - * @return {String} - */ - getSvgStyles: function () { - var opacity = typeof this.opacity !== 'undefined' && this.opacity !== 1 - ? 'opacity: ' + this.opacity + ';' - : '', visibility = this.visible ? '' : ' visibility: hidden;'; - return [opacity, this.getSvgFilter(), visibility].join(''); - }, - /** - * Returns svg clipPath representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toClipPathSVG: function (reviver) { - var svgString = []; - var bg = this._createSVGBgRect(reviver); - bg && svgString.push('\t', bg); - for (var i = 0; i < this._objects.length; i++) { - svgString.push('\t', this._objects[i].toClipPathSVG(reviver)); - } - return this._createBaseClipPathSVGMarkup(svgString, { - reviver: reviver, - }); - }, - /* _TO_SVG_END_ */ - }); + cursorStyle: 'crosshair', + /** - * @todo support loading from svg - * @private - * @static - * @memberOf fabric.Group - * @param {Object} object Object to create a group from - * @returns {Promise} - */ - fabric.Group.fromObject = function (object) { - var objects = object.objects || [], options = clone(object, true); - delete options.objects; - return Promise.all([ - fabric.util.enlivenObjects(objects), - fabric.util.enlivenObjectEnlivables(options), - ]).then(function (enlivened) { - return new fabric.Group(enlivened[0], Object.assign(options, enlivened[1]), true); - }); - }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}); - /** - * Group class - * @class fabric.ActiveSelection - * @extends fabric.Group - * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#groups} - * @see {@link fabric.ActiveSelection#initialize} for constructor definition - */ - fabric.ActiveSelection = fabric.util.createClass(fabric.Group, - /** @lends fabric.ActiveSelection.prototype */ { - /** - * Type of an object - * @type String - * @default - */ - type: 'activeSelection', - /** - * @override - */ - layout: 'fit-content', - /** - * @override - */ - subTargetCheck: false, - /** - * @override - */ - interactive: false, - /** - * Constructor - * - * @param {fabric.Object[]} [objects] instance objects - * @param {Object} [options] Options object - * @param {boolean} [objectsRelativeToGroup] true if objects exist in group coordinate plane - * @return {fabric.ActiveSelection} thisArg - */ - initialize: function (objects, options, objectsRelativeToGroup) { - this.callSuper('initialize', objects, options, objectsRelativeToGroup); - this.setCoords(); - }, - /** - * @private - */ - _shouldSetNestedCoords: function () { - return true; - }, - /** - * @private - * @param {fabric.Object} object - * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane - * @returns {boolean} true if object entered group - */ - enterGroup: function (object, removeParentTransform) { - if (object.group) { - // save ref to group for later in order to return to it - var parent = object.group; - parent._exitGroup(object); - object.__owningGroup = parent; - } - this._enterGroup(object, removeParentTransform); - return true; - }, - /** - * we want objects to retain their canvas ref when exiting instance - * @private - * @param {fabric.Object} object - * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it - */ - exitGroup: function (object, removeParentTransform) { - this._exitGroup(object, removeParentTransform); - var parent = object.__owningGroup; - if (parent) { - // return to owning group - parent.enterGroup(object); - delete object.__owningGroup; - } - }, - /** - * @private - * @param {'added'|'removed'} type - * @param {fabric.Object[]} targets - */ - _onAfterObjectsChange: function (type, targets) { - var groups = []; - targets.forEach(function (object) { - object.group && - !groups.includes(object.group) && - groups.push(object.group); - }); - if (type === 'removed') { - // invalidate groups' layout and mark as dirty - groups.forEach(function (group) { - group._onAfterObjectsChange('added', targets); - }); - } - else { - // mark groups as dirty - groups.forEach(function (group) { - group._set('dirty', true); - }); - } - }, - /** - * If returns true, deselection is cancelled. - * @since 2.0.0 - * @return {Boolean} [cancel] - */ - onDeselect: function () { - this.removeAll(); - return false; - }, - /** - * Returns string representation of a group - * @return {String} - */ - toString: function () { - return '#'; - }, - /** - * Decide if the object should cache or not. Create its own cache level - * objectCaching is a global flag, wins over everything - * needsItsOwnCache should be used when the object drawing method requires - * a cache step. None of the fabric classes requires it. - * Generally you do not cache objects in groups because the group outside is cached. - * @return {Boolean} - */ - shouldCache: function () { - return false; - }, - /** - * Check if this group or its parent group are caching, recursively up - * @return {Boolean} - */ - isOnACache: function () { - return false; - }, - /** - * Renders controls and borders for the object - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Object} [styleOverride] properties to override the object style - * @param {Object} [childrenOverride] properties to override the children overrides - */ - _renderControls: function (ctx, styleOverride, childrenOverride) { - ctx.save(); - ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1; - this.callSuper('_renderControls', ctx, styleOverride); - var options = Object.assign({ hasControls: false }, childrenOverride, { - forActiveSelection: true, - }); - for (var i = 0; i < this._objects.length; i++) { - this._objects[i]._renderControls(ctx, options); - } - ctx.restore(); - }, - }); + * If controls has an offsetY or offsetX, draw a line that connects + * the control to the bounding box + * @type {Boolean} + * @default false + */ + withConnection: false, + /** - * Returns {@link fabric.ActiveSelection} instance from an object representation - * @static - * @memberOf fabric.ActiveSelection - * @param {Object} object Object to create a group from - * @returns {Promise} - */ - fabric.ActiveSelection.fromObject = function (object) { - var objects = object.objects, options = fabric.util.object.clone(object, true); - delete options.objects; - return fabric.util - .enlivenObjects(objects) - .then(function (enlivenedObjects) { - return new fabric.ActiveSelection(enlivenedObjects, options, true); - }); - }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric, extend = fabric.util.object.extend; - /** - * Image class - * @class fabric.Image - * @extends fabric.Object - * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#images} - * @see {@link fabric.Image#initialize} for constructor definition - */ - fabric.Image = fabric.util.createClass(fabric.Object, - /** @lends fabric.Image.prototype */ { - /** - * Type of an object - * @type String - * @default - */ - type: 'image', - /** - * Width of a stroke. - * For image quality a stroke multiple of 2 gives better results. - * @type Number - * @default - */ - strokeWidth: 0, - /** - * When calling {@link fabric.Image.getSrc}, return value from element src with `element.getAttribute('src')`. - * This allows for relative urls as image src. - * @since 2.7.0 - * @type Boolean - * @default - */ - srcFromAttribute: false, - /** - * private - * contains last value of scaleX to detect - * if the Image got resized after the last Render - * @type Number - */ - _lastScaleX: 1, - /** - * private - * contains last value of scaleY to detect - * if the Image got resized after the last Render - * @type Number - */ - _lastScaleY: 1, - /** - * private - * contains last value of scaling applied by the apply filter chain - * @type Number - */ - _filterScalingX: 1, - /** - * private - * contains last value of scaling applied by the apply filter chain - * @type Number - */ - _filterScalingY: 1, - /** - * minimum scale factor under which any resizeFilter is triggered to resize the image - * 0 will disable the automatic resize. 1 will trigger automatically always. - * number bigger than 1 are not implemented yet. - * @type Number - */ - minimumScaleTrigger: 0.5, - /** - * List of properties to consider when checking if - * state of an object is changed ({@link fabric.Object#hasStateChanged}) - * as well as for history (undo/redo) purposes - * @type Array - */ - stateProperties: fabric.Object.prototype.stateProperties.concat('cropX', 'cropY'), - /** - * List of properties to consider when checking if cache needs refresh - * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single - * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty - * and refreshed at the next render - * @type Array - */ - cacheProperties: fabric.Object.prototype.cacheProperties.concat('cropX', 'cropY'), - /** - * key used to retrieve the texture representing this image - * @since 2.0.0 - * @type String - * @default - */ - cacheKey: '', - /** - * Image crop in pixels from original image size. - * @since 2.0.0 - * @type Number - * @default - */ - cropX: 0, - /** - * Image crop in pixels from original image size. - * @since 2.0.0 - * @type Number - * @default - */ - cropY: 0, - /** - * Indicates whether this canvas will use image smoothing when painting this image. - * Also influence if the cacheCanvas for this image uses imageSmoothing - * @since 4.0.0-beta.11 - * @type Boolean - * @default - */ - imageSmoothing: true, - /** - * Constructor - * Image can be initialized with any canvas drawable or a string. - * The string should be a url and will be loaded as an image. - * Canvas and Image element work out of the box, while videos require extra code to work. - * Please check video element events for seeking. - * @param {HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | String} element Image element - * @param {Object} [options] Options object - * @return {fabric.Image} thisArg - */ - initialize: function (element, options) { - options || (options = {}); - this.filters = []; - this.cacheKey = 'texture' + fabric.Object.__uid++; - this.callSuper('initialize', options); - this._initElement(element, options); - }, - /** - * Returns image element which this instance if based on - * @return {HTMLImageElement} Image element - */ - getElement: function () { - return this._element || {}; - }, - /** - * Sets image element for this instance to a specified one. - * If filters defined they are applied to new image. - * You might need to call `canvas.renderAll` and `object.setCoords` after replacing, to render new image and update controls area. - * @param {HTMLImageElement} element - * @param {Object} [options] Options object - * @return {fabric.Image} thisArg - * @chainable - */ - setElement: function (element, options) { - this.removeTexture(this.cacheKey); - this.removeTexture(this.cacheKey + '_filtered'); - this._element = element; - this._originalElement = element; - this._initConfig(options); - element.classList.add(fabric.Image.CSS_CANVAS); - if (this.filters.length !== 0) { - this.applyFilters(); - } - // resizeFilters work on the already filtered copy. - // we need to apply resizeFilters AFTER normal filters. - // applyResizeFilters is run more often than normal filters - // and is triggered by user interactions rather than dev code - if (this.resizeFilter) { - this.applyResizeFilters(); - } - return this; - }, - /** - * Delete a single texture if in webgl mode - */ - removeTexture: function (key) { - var backend = fabric.filterBackend; - if (backend && backend.evictCachesForKey) { - backend.evictCachesForKey(key); - } - }, - /** - * Delete textures, reference to elements and eventually JSDOM cleanup - */ - dispose: function () { - this.callSuper('dispose'); - this.removeTexture(this.cacheKey); - this.removeTexture(this.cacheKey + '_filtered'); - this._cacheContext = undefined; - ['_originalElement', '_element', '_filteredEl', '_cacheCanvas'].forEach(function (element) { - fabric.util.cleanUpJsdomNode(this[element]); - this[element] = undefined; - }.bind(this)); - }, - /** - * Get the crossOrigin value (of the corresponding image element) - */ - getCrossOrigin: function () { - return (this._originalElement && (this._originalElement.crossOrigin || null)); - }, - /** - * Returns original size of an image - * @return {Object} Object with "width" and "height" properties - */ - getOriginalSize: function () { - var element = this.getElement(); - return { - width: element.naturalWidth || element.width, - height: element.naturalHeight || element.height, - }; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _stroke: function (ctx) { - if (!this.stroke || this.strokeWidth === 0) { - return; - } - var w = this.width / 2, h = this.height / 2; - ctx.beginPath(); - ctx.moveTo(-w, -h); - ctx.lineTo(w, -h); - ctx.lineTo(w, h); - ctx.lineTo(-w, h); - ctx.lineTo(-w, -h); - ctx.closePath(); - }, - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toObject: function (propertiesToInclude) { - var filters = []; - this.filters.forEach(function (filterObj) { - if (filterObj) { - filters.push(filterObj.toObject()); - } - }); - var object = extend(this.callSuper('toObject', ['cropX', 'cropY'].concat(propertiesToInclude)), { - src: this.getSrc(), - crossOrigin: this.getCrossOrigin(), - filters: filters, - }); - if (this.resizeFilter) { - object.resizeFilter = this.resizeFilter.toObject(); - } - return object; - }, - /** - * Returns true if an image has crop applied, inspecting values of cropX,cropY,width,height. - * @return {Boolean} - */ - hasCrop: function () { - return (this.cropX || - this.cropY || - this.width < this._element.width || - this.height < this._element.height); - }, - /* _TO_SVG_START_ */ - /** - * Returns svg representation of an instance - * @return {Array} an array of strings with the specific svg representation - * of the instance - */ - _toSVG: function () { - var svgString = [], imageMarkup = [], strokeSvg, element = this._element, x = -this.width / 2, y = -this.height / 2, clipPath = '', imageRendering = ''; - if (!element) { - return []; - } - if (this.hasCrop()) { - var clipPathId = fabric.Object.__uid++; - svgString.push('\n', '\t\n', '\n'); - clipPath = ' clip-path="url(#imageCrop_' + clipPathId + ')" '; - } - if (!this.imageSmoothing) { - imageRendering = '" image-rendering="optimizeSpeed'; - } - imageMarkup.push('\t\n'); - if (this.stroke || this.strokeDashArray) { - var origFill = this.fill; - this.fill = null; - strokeSvg = [ - '\t\n', - ]; - this.fill = origFill; - } - if (this.paintFirst !== 'fill') { - svgString = svgString.concat(strokeSvg, imageMarkup); - } - else { - svgString = svgString.concat(imageMarkup, strokeSvg); - } - return svgString; - }, - /* _TO_SVG_END_ */ - /** - * Returns source of an image - * @param {Boolean} filtered indicates if the src is needed for svg - * @return {String} Source of an image - */ - getSrc: function (filtered) { - var element = filtered ? this._element : this._originalElement; - if (element) { - if (element.toDataURL) { - return element.toDataURL(); - } - if (this.srcFromAttribute) { - return element.getAttribute('src'); - } - else { - return element.src; - } - } - else { - return this.src || ''; - } - }, - /** - * Loads and sets source of an image\ - * **IMPORTANT**: It is recommended to abort loading tasks before calling this method to prevent race conditions and unnecessary networking - * @param {String} src Source string (URL) - * @param {Object} [options] Options object - * @param {AbortSignal} [options.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @param {String} [options.crossOrigin] crossOrigin value (one of "", "anonymous", "use-credentials") - * @see https://developer.mozilla.org/en-US/docs/HTML/CORS_settings_attributes - * @return {Promise} thisArg - */ - setSrc: function (src, options) { - var _this = this; - return fabric.util.loadImage(src, options).then(function (img) { - _this.setElement(img, options); - _this._setWidthHeight(); - return _this; - }); - }, - /** - * Returns string representation of an instance - * @return {String} String representation of an instance - */ - toString: function () { - return '#'; - }, - applyResizeFilters: function () { - var filter = this.resizeFilter, minimumScale = this.minimumScaleTrigger, objectScale = this.getTotalObjectScaling(), scaleX = objectScale.x, scaleY = objectScale.y, elementToFilter = this._filteredEl || this._originalElement; - if (this.group) { - this.set('dirty', true); - } - if (!filter || (scaleX > minimumScale && scaleY > minimumScale)) { - this._element = elementToFilter; - this._filterScalingX = 1; - this._filterScalingY = 1; - this._lastScaleX = scaleX; - this._lastScaleY = scaleY; - return; - } - if (!fabric.filterBackend) { - fabric.filterBackend = fabric.initFilterBackend(); - } - var canvasEl = fabric.util.createCanvasElement(), cacheKey = this._filteredEl - ? this.cacheKey + '_filtered' - : this.cacheKey, sourceWidth = elementToFilter.width, sourceHeight = elementToFilter.height; - canvasEl.width = sourceWidth; - canvasEl.height = sourceHeight; - this._element = canvasEl; - this._lastScaleX = filter.scaleX = scaleX; - this._lastScaleY = filter.scaleY = scaleY; - fabric.filterBackend.applyFilters([filter], elementToFilter, sourceWidth, sourceHeight, this._element, cacheKey); - this._filterScalingX = canvasEl.width / this._originalElement.width; - this._filterScalingY = canvasEl.height / this._originalElement.height; - }, - /** - * Applies filters assigned to this image (from "filters" array) or from filter param - * @method applyFilters - * @param {Array} filters to be applied - * @param {Boolean} forResizing specify if the filter operation is a resize operation - * @return {thisArg} return the fabric.Image object - * @chainable - */ - applyFilters: function (filters) { - filters = filters || this.filters || []; - filters = filters.filter(function (filter) { - return filter && !filter.isNeutralState(); - }); - this.set('dirty', true); - // needs to clear out or WEBGL will not resize correctly - this.removeTexture(this.cacheKey + '_filtered'); - if (filters.length === 0) { - this._element = this._originalElement; - this._filteredEl = null; - this._filterScalingX = 1; - this._filterScalingY = 1; - return this; - } - var imgElement = this._originalElement, sourceWidth = imgElement.naturalWidth || imgElement.width, sourceHeight = imgElement.naturalHeight || imgElement.height; - if (this._element === this._originalElement) { - // if the element is the same we need to create a new element - var canvasEl = fabric.util.createCanvasElement(); - canvasEl.width = sourceWidth; - canvasEl.height = sourceHeight; - this._element = canvasEl; - this._filteredEl = canvasEl; - } - else { - // clear the existing element to get new filter data - // also dereference the eventual resized _element - this._element = this._filteredEl; - this._filteredEl - .getContext('2d') - .clearRect(0, 0, sourceWidth, sourceHeight); - // we also need to resize again at next renderAll, so remove saved _lastScaleX/Y - this._lastScaleX = 1; - this._lastScaleY = 1; - } - if (!fabric.filterBackend) { - fabric.filterBackend = fabric.initFilterBackend(); - } - fabric.filterBackend.applyFilters(filters, this._originalElement, sourceWidth, sourceHeight, this._element, this.cacheKey); - if (this._originalElement.width !== this._element.width || - this._originalElement.height !== this._element.height) { - this._filterScalingX = - this._element.width / this._originalElement.width; - this._filterScalingY = - this._element.height / this._originalElement.height; - } - return this; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function (ctx) { - ctx.imageSmoothingEnabled = this.imageSmoothing; - if (this.isMoving !== true && - this.resizeFilter && - this._needsResize()) { - this.applyResizeFilters(); - } - this._stroke(ctx); - this._renderPaintInOrder(ctx); - }, - /** - * Paint the cached copy of the object on the target context. - * it will set the imageSmoothing for the draw operation - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - drawCacheOnCanvas: function (ctx) { - ctx.imageSmoothingEnabled = this.imageSmoothing; - fabric.Object.prototype.drawCacheOnCanvas.call(this, ctx); - }, - /** - * Decide if the object should cache or not. Create its own cache level - * needsItsOwnCache should be used when the object drawing method requires - * a cache step. None of the fabric classes requires it. - * Generally you do not cache objects in groups because the group outside is cached. - * This is the special image version where we would like to avoid caching where possible. - * Essentially images do not benefit from caching. They may require caching, and in that - * case we do it. Also caching an image usually ends in a loss of details. - * A full performance audit should be done. - * @return {Boolean} - */ - shouldCache: function () { - return this.needsItsOwnCache(); - }, - _renderFill: function (ctx) { - var elementToDraw = this._element; - if (!elementToDraw) { - return; - } - var scaleX = this._filterScalingX, scaleY = this._filterScalingY, w = this.width, h = this.height, min = Math.min, max = Math.max, - // crop values cannot be lesser than 0. - cropX = max(this.cropX, 0), cropY = max(this.cropY, 0), elWidth = elementToDraw.naturalWidth || elementToDraw.width, elHeight = elementToDraw.naturalHeight || elementToDraw.height, sX = cropX * scaleX, sY = cropY * scaleY, - // the width height cannot exceed element width/height, starting from the crop offset. - sW = min(w * scaleX, elWidth - sX), sH = min(h * scaleY, elHeight - sY), x = -w / 2, y = -h / 2, maxDestW = min(w, elWidth / scaleX - cropX), maxDestH = min(h, elHeight / scaleY - cropY); - elementToDraw && - ctx.drawImage(elementToDraw, sX, sY, sW, sH, x, y, maxDestW, maxDestH); - }, - /** - * needed to check if image needs resize - * @private - */ - _needsResize: function () { - var scale = this.getTotalObjectScaling(); - return scale.x !== this._lastScaleX || scale.y !== this._lastScaleY; - }, - /** - * @private - */ - _resetWidthHeight: function () { - this.set(this.getOriginalSize()); - }, - /** - * The Image class's initialization method. This method is automatically - * called by the constructor. - * @private - * @param {HTMLImageElement|String} element The element representing the image - * @param {Object} [options] Options object - */ - _initElement: function (element, options) { - this.setElement(fabric.document.getElementById(element) || element, options); - }, - /** - * @private - * @param {Object} [options] Options object - */ - _initConfig: function (options) { - options || (options = {}); - this.setOptions(options); - this._setWidthHeight(options); - }, - /** - * @private - * Set the width and the height of the image object, using the element or the - * options. - * @param {Object} [options] Object with width/height properties - */ - _setWidthHeight: function (options) { - options || (options = {}); - var el = this.getElement(); - this.width = options.width || el.naturalWidth || el.width || 0; - this.height = options.height || el.naturalHeight || el.height || 0; - }, - /** - * Calculate offset for center and scale factor for the image in order to respect - * the preserveAspectRatio attribute - * @private - * @return {Object} - */ - parsePreserveAspectRatioAttribute: function () { - var pAR = fabric.util.parsePreserveAspectRatioAttribute(this.preserveAspectRatio || ''), rWidth = this._element.width, rHeight = this._element.height, scaleX = 1, scaleY = 1, offsetLeft = 0, offsetTop = 0, cropX = 0, cropY = 0, offset, pWidth = this.width, pHeight = this.height, parsedAttributes = { width: pWidth, height: pHeight }; - if (pAR && (pAR.alignX !== 'none' || pAR.alignY !== 'none')) { - if (pAR.meetOrSlice === 'meet') { - scaleX = scaleY = fabric.util.findScaleToFit(this._element, parsedAttributes); - offset = (pWidth - rWidth * scaleX) / 2; - if (pAR.alignX === 'Min') { - offsetLeft = -offset; - } - if (pAR.alignX === 'Max') { - offsetLeft = offset; - } - offset = (pHeight - rHeight * scaleY) / 2; - if (pAR.alignY === 'Min') { - offsetTop = -offset; - } - if (pAR.alignY === 'Max') { - offsetTop = offset; - } - } - if (pAR.meetOrSlice === 'slice') { - scaleX = scaleY = fabric.util.findScaleToCover(this._element, parsedAttributes); - offset = rWidth - pWidth / scaleX; - if (pAR.alignX === 'Mid') { - cropX = offset / 2; - } - if (pAR.alignX === 'Max') { - cropX = offset; - } - offset = rHeight - pHeight / scaleY; - if (pAR.alignY === 'Mid') { - cropY = offset / 2; - } - if (pAR.alignY === 'Max') { - cropY = offset; - } - rWidth = pWidth / scaleX; - rHeight = pHeight / scaleY; - } - } - else { - scaleX = pWidth / rWidth; - scaleY = pHeight / rHeight; - } - return { - width: rWidth, - height: rHeight, - scaleX: scaleX, - scaleY: scaleY, - offsetLeft: offsetLeft, - offsetTop: offsetTop, - cropX: cropX, - cropY: cropY, - }; - }, - }); + * The control actionHandler, provide one to handle action ( control being moved ) + * @param {Event} eventData the native mouse event + * @param {Object} transformData properties of the current transform + * @param {Number} x x position of the cursor + * @param {Number} y y position of the cursor + * @return {Boolean} true if the action/event modified the object + */ + actionHandler: function(/* eventData, transformData, x, y */) { }, + /** - * Default CSS class name for canvas - * @static - * @type String - * @default + * The control handler for mouse down, provide one to handle mouse down on control + * @param {Event} eventData the native mouse event + * @param {Object} transformData properties of the current transform + * @param {Number} x x position of the cursor + * @param {Number} y y position of the cursor + * @return {Boolean} true if the action/event modified the object */ - fabric.Image.CSS_CANVAS = 'canvas-img'; + mouseDownHandler: function(/* eventData, transformData, x, y */) { }, + /** - * Alias for getSrc - * @static + * The control mouseUpHandler, provide one to handle an effect on mouse up. + * @param {Event} eventData the native mouse event + * @param {Object} transformData properties of the current transform + * @param {Number} x x position of the cursor + * @param {Number} y y position of the cursor + * @return {Boolean} true if the action/event modified the object */ - fabric.Image.prototype.getSvgSrc = fabric.Image.prototype.getSrc; + mouseUpHandler: function(/* eventData, transformData, x, y */) { }, + /** - * Creates an instance of fabric.Image from its object representation - * @static - * @param {Object} object Object to create an instance from - * @param {object} [options] Options object - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @returns {Promise} - */ - fabric.Image.fromObject = function (object, options) { - var _object = Object.assign({}, object), filters = _object.filters, resizeFilter = _object.resizeFilter; - // the generic enliving will fail on filters for now - delete _object.resizeFilter; - delete _object.filters; - var imageOptions = Object.assign({}, options, { - crossOrigin: _object.crossOrigin, - }), filterOptions = Object.assign({}, options, { - namespace: fabric.Image.filters, - }); - return Promise.all([ - fabric.util.loadImage(_object.src, imageOptions), - filters && fabric.util.enlivenObjects(filters, filterOptions), - resizeFilter && fabric.util.enlivenObjects([resizeFilter], filterOptions), - fabric.util.enlivenObjectEnlivables(_object, options), - ]).then(function (imgAndFilters) { - _object.filters = imgAndFilters[1] || []; - _object.resizeFilter = imgAndFilters[2] && imgAndFilters[2][0]; - return new fabric.Image(imgAndFilters[0], Object.assign(_object, imgAndFilters[3])); - }); - }; + * Returns control actionHandler + * @param {Event} eventData the native mouse event + * @param {fabric.Object} fabricObject on which the control is displayed + * @param {fabric.Control} control control for which the action handler is being asked + * @return {Function} the action handler + */ + getActionHandler: function(/* eventData, fabricObject, control */) { + return this.actionHandler; + }, + /** - * Creates an instance of fabric.Image from an URL string - * @static - * @param {String} url URL to create an image from - * @param {object} [options] Options object - * @param {string} [options.crossOrigin] cors value for the image loading, default to anonymous - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @returns {Promise} - */ - fabric.Image.fromURL = function (url, options) { - return fabric.util.loadImage(url, options || {}).then(function (img) { - return new fabric.Image(img, options); - }); - }; - /* _FROM_SVG_START_ */ + * Returns control mouseDown handler + * @param {Event} eventData the native mouse event + * @param {fabric.Object} fabricObject on which the control is displayed + * @param {fabric.Control} control control for which the action handler is being asked + * @return {Function} the action handler + */ + getMouseDownHandler: function(/* eventData, fabricObject, control */) { + return this.mouseDownHandler; + }, + /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Image.fromElement}) - * @static - * @see {@link http://www.w3.org/TR/SVG/struct.html#ImageElement} + * Returns control mouseUp handler + * @param {Event} eventData the native mouse event + * @param {fabric.Object} fabricObject on which the control is displayed + * @param {fabric.Control} control control for which the action handler is being asked + * @return {Function} the action handler */ - fabric.Image.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x y width height preserveAspectRatio xlink:href crossOrigin image-rendering'.split(' ')); + getMouseUpHandler: function(/* eventData, fabricObject, control */) { + return this.mouseUpHandler; + }, + /** - * Returns {@link fabric.Image} instance from an SVG element - * @static - * @param {SVGElement} element Element to parse - * @param {Object} [options] Options object - * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @param {Function} callback Callback to execute when fabric.Image object is created - * @return {fabric.Image} Instance of fabric.Image - */ - fabric.Image.fromElement = function (element, callback, options) { - var parsedAttributes = fabric.parseAttributes(element, fabric.Image.ATTRIBUTE_NAMES); - fabric.Image.fromURL(parsedAttributes['xlink:href'], Object.assign({}, options || {}, parsedAttributes)).then(function (fabricImage) { - callback(fabricImage); - }); - }; - /* _FROM_SVG_END_ */ -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.Object.prototype, - /** @lends fabric.Object.prototype */ { - /** - * @private - * @return {Number} angle value - */ - _getAngleValueForStraighten: function () { - var angle = this.angle % 360; - if (angle > 0) { - return Math.round((angle - 1) / 90) * 90; - } - return Math.round(angle / 90) * 90; - }, - /** - * Straightens an object (rotating it from current angle to one of 0, 90, 180, 270, etc. depending on which is closer) - * @return {fabric.Object} thisArg - * @chainable - */ - straighten: function () { - return this.rotate(this._getAngleValueForStraighten()); + * Returns control cursorStyle for css using cursorStyle. If you need a more elaborate + * function you can pass one in the constructor + * the cursorStyle property + * @param {Event} eventData the native mouse event + * @param {fabric.Control} control the current control ( likely this) + * @param {fabric.Object} object on which the control is displayed + * @return {String} + */ + cursorStyleHandler: function(eventData, control /* fabricObject */) { + return control.cursorStyle; + }, + + /** + * Returns the action name. The basic implementation just return the actionName property. + * @param {Event} eventData the native mouse event + * @param {fabric.Control} control the current control ( likely this) + * @param {fabric.Object} object on which the control is displayed + * @return {String} + */ + getActionName: function(eventData, control /* fabricObject */) { + return control.actionName; + }, + + /** + * Returns controls visibility + * @param {fabric.Object} object on which the control is displayed + * @param {String} controlKey key where the control is memorized on the + * @return {Boolean} + */ + getVisibility: function(fabricObject, controlKey) { + var objectVisibility = fabricObject._controlsVisibility; + if (objectVisibility && typeof objectVisibility[controlKey] !== 'undefined') { + return objectVisibility[controlKey]; + } + return this.visible; + }, + + /** + * Sets controls visibility + * @param {Boolean} visibility for the object + * @return {Void} + */ + setVisibility: function(visibility /* name, fabricObject */) { + this.visible = visibility; + }, + + + positionHandler: function(dim, finalMatrix /*, fabricObject, currentControl */) { + var point = fabric.util.transformPoint({ + x: this.x * dim.x + this.offsetX, + y: this.y * dim.y + this.offsetY }, finalMatrix); + return point; + }, + + /** + * Returns the coords for this control based on object values. + * @param {Number} objectAngle angle from the fabric object holding the control + * @param {Number} objectCornerSize cornerSize from the fabric object holding the control (or touchCornerSize if + * isTouch is true) + * @param {Number} centerX x coordinate where the control center should be + * @param {Number} centerY y coordinate where the control center should be + * @param {boolean} isTouch true if touch corner, false if normal corner + */ + calcCornerCoords: function(objectAngle, objectCornerSize, centerX, centerY, isTouch) { + var cosHalfOffset, + sinHalfOffset, + cosHalfOffsetComp, + sinHalfOffsetComp, + xSize = (isTouch) ? this.touchSizeX : this.sizeX, + ySize = (isTouch) ? this.touchSizeY : this.sizeY; + if (xSize && ySize && xSize !== ySize) { + // handle rectangular corners + var controlTriangleAngle = Math.atan2(ySize, xSize); + var cornerHypotenuse = Math.sqrt(xSize * xSize + ySize * ySize) / 2; + var newTheta = controlTriangleAngle - fabric.util.degreesToRadians(objectAngle); + var newThetaComp = Math.PI / 2 - controlTriangleAngle - fabric.util.degreesToRadians(objectAngle); + cosHalfOffset = cornerHypotenuse * fabric.util.cos(newTheta); + sinHalfOffset = cornerHypotenuse * fabric.util.sin(newTheta); + // use complementary angle for two corners + cosHalfOffsetComp = cornerHypotenuse * fabric.util.cos(newThetaComp); + sinHalfOffsetComp = cornerHypotenuse * fabric.util.sin(newThetaComp); + } + else { + // handle square corners + // use default object corner size unless size is defined + var cornerSize = (xSize && ySize) ? xSize : objectCornerSize; + /* 0.7071067812 stands for sqrt(2)/2 */ + cornerHypotenuse = cornerSize * 0.7071067812; + // complementary angles are equal since they're both 45 degrees + var newTheta = fabric.util.degreesToRadians(45 - objectAngle); + cosHalfOffset = cosHalfOffsetComp = cornerHypotenuse * fabric.util.cos(newTheta); + sinHalfOffset = sinHalfOffsetComp = cornerHypotenuse * fabric.util.sin(newTheta); + } + + return { + tl: { + x: centerX - sinHalfOffsetComp, + y: centerY - cosHalfOffsetComp, }, - /** - * Same as {@link fabric.Object.prototype.straighten} but with animation - * @param {Object} callbacks Object with callback functions - * @param {Function} [callbacks.onComplete] Invoked on completion - * @param {Function} [callbacks.onChange] Invoked on every step of animation - * @return {fabric.Object} thisArg - */ - fxStraighten: function (callbacks) { - callbacks = callbacks || {}; - var empty = function () { }, onComplete = callbacks.onComplete || empty, onChange = callbacks.onChange || empty, _this = this; - return fabric.util.animate({ - target: this, - startValue: this.get('angle'), - endValue: this._getAngleValueForStraighten(), - duration: this.FX_DURATION, - onChange: function (value) { - _this.rotate(value); - onChange(); - }, - onComplete: function () { - _this.setCoords(); - onComplete(); - }, - }); + tr: { + x: centerX + cosHalfOffset, + y: centerY - sinHalfOffset, }, - }); - fabric.util.object.extend(fabric.StaticCanvas.prototype, - /** @lends fabric.StaticCanvas.prototype */ { - /** - * Straightens object, then rerenders canvas - * @param {fabric.Object} object Object to straighten - * @return {fabric.Canvas} thisArg - * @chainable - */ - straightenObject: function (object) { - object.straighten(); - this.requestRenderAll(); - return this; + bl: { + x: centerX - cosHalfOffset, + y: centerY + sinHalfOffset, }, - /** - * Same as {@link fabric.Canvas.prototype.straightenObject}, but animated - * @param {fabric.Object} object Object to straighten - * @return {fabric.Canvas} thisArg - */ - fxStraightenObject: function (object) { - return object.fxStraighten({ - onChange: this.requestRenderAllBound, - }); + br: { + x: centerX + sinHalfOffsetComp, + y: centerY + cosHalfOffsetComp, }, - }); -})(typeof exports !== 'undefined' ? exports : window); + }; + }, -//@ts-nocheck -/** - * @todo remove once rollup supports transforming enums... - * https://github.com/rollup/plugins/issues/463 - */ -const WebGLPrecision = [ - "lowp" /* TWebGLPrecision.low */, - "mediump" /* TWebGLPrecision.medium */, - "highp" /* TWebGLPrecision.high */, -]; -/** - * Lazy initialize WebGL contants - */ -class WebGLProbe { - constructor() { - this.initialized = false; - } - get maxTextureSize() { - this.queryWebGL(); - return this._maxTextureSize; - } - get webGLPrecision() { - this.queryWebGL(); - return this._webGLPrecision; - } - /** - * Tests if webgl supports certain precision - * @param {WebGL} Canvas WebGL context to test on - * @param {TWebGLPrecision} Precision to test can be any of following - * @returns {Boolean} Whether the user's browser WebGL supports given precision. - */ - testPrecision(gl, precision) { - const fragmentSource = `precision ${precision} float;\nvoid main(){}`; - const fragmentShader = gl.createShader(gl.FRAGMENT_SHADER); - gl.shaderSource(fragmentShader, fragmentSource); - gl.compileShader(fragmentShader); - return !!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS); - } /** - * query browser for WebGL - * @returns config object if true - */ - queryWebGL() { - if (this.initialized || fabric$1.isLikelyNode) { - return; + * Render function for the control. + * When this function runs the context is unscaled. unrotate. Just retina scaled. + * all the functions will have to translate to the point left,top before starting Drawing + * if they want to draw a control where the position is detected. + * left and top are the result of the positionHandler function + * @param {RenderingContext2D} ctx the context where the control will be drawn + * @param {Number} left position of the canvas where we are about to render the control. + * @param {Number} top position of the canvas where we are about to render the control. + * @param {Object} styleOverride + * @param {fabric.Object} fabricObject the object where the control is about to be rendered + */ + render: function(ctx, left, top, styleOverride, fabricObject) { + styleOverride = styleOverride || {}; + switch (styleOverride.cornerStyle || fabricObject.cornerStyle) { + case 'circle': + fabric.controlsUtils.renderCircleControl.call(this, ctx, left, top, styleOverride, fabricObject); + break; + default: + fabric.controlsUtils.renderSquareControl.call(this, ctx, left, top, styleOverride, fabricObject); + } + }, + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function() { + + /* _FROM_SVG_START_ */ + function getColorStop(el, multiplier) { + var style = el.getAttribute('style'), + offset = el.getAttribute('offset') || 0, + color, colorAlpha, opacity, i; + + // convert percents to absolute values + offset = parseFloat(offset) / (/%$/.test(offset) ? 100 : 1); + offset = offset < 0 ? 0 : offset > 1 ? 1 : offset; + if (style) { + var keyValuePairs = style.split(/\s*;\s*/); + + if (keyValuePairs[keyValuePairs.length - 1] === '') { + keyValuePairs.pop(); + } + + for (i = keyValuePairs.length; i--; ) { + + var split = keyValuePairs[i].split(/\s*:\s*/), + key = split[0].trim(), + value = split[1].trim(); + + if (key === 'stop-color') { + color = value; } - const canvas = createCanvasElement(); - const gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl'); - if (gl) { - this._maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE); - this._webGLPrecision = WebGLPrecision.find((key) => this.testPrecision(gl, key)); - console.log(`fabric: max texture size ${this._maxTextureSize}`); + else if (key === 'stop-opacity') { + opacity = value; } - this.initialized = true; + } + } + + if (!color) { + color = el.getAttribute('stop-color') || 'rgb(0,0,0)'; } - isSupported(textureSize) { - return this.maxTextureSize && this.maxTextureSize >= textureSize; + if (!opacity) { + opacity = el.getAttribute('stop-opacity'); } -} -const webGLProbe = new WebGLProbe(); -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.initFilterBackend = function () { - if (config.enableGLFiltering && - webGLProbe.isSupported(config.textureSize)) { - return new fabric.WebglFilterBackend({ tileSize: config.textureSize }); - } - else if (fabric.Canvas2dFilterBackend) { - return new fabric.Canvas2dFilterBackend(); - } + color = new fabric.Color(color); + colorAlpha = color.getAlpha(); + opacity = isNaN(parseFloat(opacity)) ? 1 : parseFloat(opacity); + opacity *= colorAlpha * multiplier; + + return { + offset: offset, + color: color.toRgb(), + opacity: opacity }; - fabric.WebglFilterBackend = WebglFilterBackend; - /** - * WebGL filter backend. - */ - function WebglFilterBackend(options) { - if (options && options.tileSize) { - this.tileSize = options.tileSize; - } - this.setupGLContext(this.tileSize, this.tileSize); - this.captureGPUInfo(); - } - WebglFilterBackend.prototype = - /** @lends fabric.WebglFilterBackend.prototype */ { - tileSize: config.textureSize, - /** - * Experimental. This object is a sort of repository of help layers used to avoid - * of recreating them during frequent filtering. If you are previewing a filter with - * a slider you probably do not want to create help layers every filter step. - * in this object there will be appended some canvases, created once, resized sometimes - * cleared never. Clearing is left to the developer. - **/ - resources: {}, - /** - * Setup a WebGL context suitable for filtering, and bind any needed event handlers. - */ - setupGLContext: function (width, height) { - this.dispose(); - this.createWebGLCanvas(width, height); - // eslint-disable-next-line - this.aPosition = new Float32Array([0, 0, 0, 1, 1, 0, 1, 1]); - this.chooseFastestCopyGLTo2DMethod(width, height); - }, - /** - * Pick a method to copy data from GL context to 2d canvas. In some browsers using - * putImageData is faster than drawImage for that specific operation. - */ - chooseFastestCopyGLTo2DMethod: function (width, height) { - var canMeasurePerf = typeof window.performance !== 'undefined', canUseImageData; - try { - new ImageData(1, 1); - canUseImageData = true; - } - catch (e) { - canUseImageData = false; - } - // eslint-disable-next-line no-undef - var canUseArrayBuffer = typeof ArrayBuffer !== 'undefined'; - // eslint-disable-next-line no-undef - var canUseUint8Clamped = typeof Uint8ClampedArray !== 'undefined'; - if (!(canMeasurePerf && - canUseImageData && - canUseArrayBuffer && - canUseUint8Clamped)) { - return; - } - var targetCanvas = fabric.util.createCanvasElement(); - // eslint-disable-next-line no-undef - var imageBuffer = new ArrayBuffer(width * height * 4); - if (config.forceGLPutImageData) { - this.imageBuffer = imageBuffer; - this.copyGLTo2D = copyGLTo2DPutImageData; - return; - } - var testContext = { - imageBuffer: imageBuffer, - destinationWidth: width, - destinationHeight: height, - targetCanvas: targetCanvas, - }; - var startTime, drawImageTime, putImageDataTime; - targetCanvas.width = width; - targetCanvas.height = height; - startTime = window.performance.now(); - copyGLTo2DDrawImage.call(testContext, this.gl, testContext); - drawImageTime = window.performance.now() - startTime; - startTime = window.performance.now(); - copyGLTo2DPutImageData.call(testContext, this.gl, testContext); - putImageDataTime = window.performance.now() - startTime; - if (drawImageTime > putImageDataTime) { - this.imageBuffer = imageBuffer; - this.copyGLTo2D = copyGLTo2DPutImageData; - } - else { - this.copyGLTo2D = copyGLTo2DDrawImage; - } - }, - /** - * Create a canvas element and associated WebGL context and attaches them as - * class properties to the GLFilterBackend class. - */ - createWebGLCanvas: function (width, height) { - var canvas = fabric.util.createCanvasElement(); - canvas.width = width; - canvas.height = height; - var glOptions = { - alpha: true, - premultipliedAlpha: false, - depth: false, - stencil: false, - antialias: false, - }, gl = canvas.getContext('webgl', glOptions); - if (!gl) { - gl = canvas.getContext('experimental-webgl', glOptions); - } - if (!gl) { - return; - } - gl.clearColor(0, 0, 0, 0); - // this canvas can fire webglcontextlost and webglcontextrestored - this.canvas = canvas; - this.gl = gl; - }, - /** - * Attempts to apply the requested filters to the source provided, drawing the filtered output - * to the provided target canvas. - * - * @param {Array} filters The filters to apply. - * @param {HTMLImageElement|HTMLCanvasElement} source The source to be filtered. - * @param {Number} width The width of the source input. - * @param {Number} height The height of the source input. - * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn. - * @param {String|undefined} cacheKey A key used to cache resources related to the source. If - * omitted, caching will be skipped. - */ - applyFilters: function (filters, source, width, height, targetCanvas, cacheKey) { - var gl = this.gl; - var cachedTexture; - if (cacheKey) { - cachedTexture = this.getCachedTexture(cacheKey, source); - } - var pipelineState = { - originalWidth: source.width || source.originalWidth, - originalHeight: source.height || source.originalHeight, - sourceWidth: width, - sourceHeight: height, - destinationWidth: width, - destinationHeight: height, - context: gl, - sourceTexture: this.createTexture(gl, width, height, !cachedTexture && source), - targetTexture: this.createTexture(gl, width, height), - originalTexture: cachedTexture || - this.createTexture(gl, width, height, !cachedTexture && source), - passes: filters.length, - webgl: true, - aPosition: this.aPosition, - programCache: this.programCache, - pass: 0, - filterBackend: this, - targetCanvas: targetCanvas, - }; - var tempFbo = gl.createFramebuffer(); - gl.bindFramebuffer(gl.FRAMEBUFFER, tempFbo); - filters.forEach(function (filter) { - filter && filter.applyTo(pipelineState); - }); - resizeCanvasIfNeeded(pipelineState); - this.copyGLTo2D(gl, pipelineState); - gl.bindTexture(gl.TEXTURE_2D, null); - gl.deleteTexture(pipelineState.sourceTexture); - gl.deleteTexture(pipelineState.targetTexture); - gl.deleteFramebuffer(tempFbo); - targetCanvas.getContext('2d').setTransform(1, 0, 0, 1, 0, 0); - return pipelineState; - }, - /** - * Detach event listeners, remove references, and clean up caches. - */ - dispose: function () { - if (this.canvas) { - this.canvas = null; - this.gl = null; - } - this.clearWebGLCaches(); - }, - /** - * Wipe out WebGL-related caches. - */ - clearWebGLCaches: function () { - this.programCache = {}; - this.textureCache = {}; - }, - /** - * Create a WebGL texture object. - * - * Accepts specific dimensions to initialize the texture to or a source image. - * - * @param {WebGLRenderingContext} gl The GL context to use for creating the texture. - * @param {Number} width The width to initialize the texture at. - * @param {Number} height The height to initialize the texture. - * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source for the texture data. - * @returns {WebGLTexture} - */ - createTexture: function (gl, width, height, textureImageSource) { - var texture = gl.createTexture(); - gl.bindTexture(gl.TEXTURE_2D, texture); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); - if (textureImageSource) { - gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, textureImageSource); - } - else { - gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); - } - return texture; - }, - /** - * Can be optionally used to get a texture from the cache array - * - * If an existing texture is not found, a new texture is created and cached. - * - * @param {String} uniqueId A cache key to use to find an existing texture. - * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source to use to create the - * texture cache entry if one does not already exist. - */ - getCachedTexture: function (uniqueId, textureImageSource) { - if (this.textureCache[uniqueId]) { - return this.textureCache[uniqueId]; - } - else { - var texture = this.createTexture(this.gl, textureImageSource.width, textureImageSource.height, textureImageSource); - this.textureCache[uniqueId] = texture; - return texture; - } - }, - /** - * Clear out cached resources related to a source image that has been - * filtered previously. - * - * @param {String} cacheKey The cache key provided when the source image was filtered. - */ - evictCachesForKey: function (cacheKey) { - if (this.textureCache[cacheKey]) { - this.gl.deleteTexture(this.textureCache[cacheKey]); - delete this.textureCache[cacheKey]; - } - }, - copyGLTo2D: copyGLTo2DDrawImage, - /** - * Attempt to extract GPU information strings from a WebGL context. - * - * Useful information when debugging or blacklisting specific GPUs. - * - * @returns {Object} A GPU info object with renderer and vendor strings. - */ - captureGPUInfo: function () { - if (this.gpuInfo) { - return this.gpuInfo; - } - var gl = this.gl, gpuInfo = { renderer: '', vendor: '' }; - if (!gl) { - return gpuInfo; - } - var ext = gl.getExtension('WEBGL_debug_renderer_info'); - if (ext) { - var renderer = gl.getParameter(ext.UNMASKED_RENDERER_WEBGL); - var vendor = gl.getParameter(ext.UNMASKED_VENDOR_WEBGL); - if (renderer) { - gpuInfo.renderer = renderer.toLowerCase(); - } - if (vendor) { - gpuInfo.vendor = vendor.toLowerCase(); - } - } - this.gpuInfo = gpuInfo; - return gpuInfo; - }, - }; -})(typeof exports !== 'undefined' ? exports : window); -function resizeCanvasIfNeeded(pipelineState) { - var targetCanvas = pipelineState.targetCanvas, width = targetCanvas.width, height = targetCanvas.height, dWidth = pipelineState.destinationWidth, dHeight = pipelineState.destinationHeight; - if (width !== dWidth || height !== dHeight) { - targetCanvas.width = dWidth; - targetCanvas.height = dHeight; - } -} -/** - * Copy an input WebGL canvas on to an output 2D canvas. - * - * The WebGL canvas is assumed to be upside down, with the top-left pixel of the - * desired output image appearing in the bottom-left corner of the WebGL canvas. - * - * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from. - * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to. - * @param {Object} pipelineState The 2D target canvas to copy on to. - */ -function copyGLTo2DDrawImage(gl, pipelineState) { - var glCanvas = gl.canvas, targetCanvas = pipelineState.targetCanvas, ctx = targetCanvas.getContext('2d'); - ctx.translate(0, targetCanvas.height); // move it down again - ctx.scale(1, -1); // vertical flip - // where is my image on the big glcanvas? - var sourceY = glCanvas.height - targetCanvas.height; - ctx.drawImage(glCanvas, 0, sourceY, targetCanvas.width, targetCanvas.height, 0, 0, targetCanvas.width, targetCanvas.height); -} -/** - * Copy an input WebGL canvas on to an output 2D canvas using 2d canvas' putImageData - * API. Measurably faster than using ctx.drawImage in Firefox (version 54 on OSX Sierra). - * - * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from. - * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to. - * @param {Object} pipelineState The 2D target canvas to copy on to. - */ -function copyGLTo2DPutImageData(gl, pipelineState) { - var targetCanvas = pipelineState.targetCanvas, ctx = targetCanvas.getContext('2d'), dWidth = pipelineState.destinationWidth, dHeight = pipelineState.destinationHeight, numBytes = dWidth * dHeight * 4; - // eslint-disable-next-line no-undef - var u8 = new Uint8Array(this.imageBuffer, 0, numBytes); - // eslint-disable-next-line no-undef - var u8Clamped = new Uint8ClampedArray(this.imageBuffer, 0, numBytes); - gl.readPixels(0, 0, dWidth, dHeight, gl.RGBA, gl.UNSIGNED_BYTE, u8); - var imgData = new ImageData(u8Clamped, dWidth, dHeight); - ctx.putImageData(imgData, 0, 0); -} + } -//@ts-nocheck -(function (global) { - var fabric = global.fabric, noop = function () { }; - fabric.Canvas2dFilterBackend = Canvas2dFilterBackend; - /** - * Canvas 2D filter backend. - */ - function Canvas2dFilterBackend() { } - Canvas2dFilterBackend.prototype = - /** @lends fabric.Canvas2dFilterBackend.prototype */ { - evictCachesForKey: noop, - dispose: noop, - clearWebGLCaches: noop, - /** - * Experimental. This object is a sort of repository of help layers used to avoid - * of recreating them during frequent filtering. If you are previewing a filter with - * a slider you probably do not want to create help layers every filter step. - * in this object there will be appended some canvases, created once, resized sometimes - * cleared never. Clearing is left to the developer. - **/ - resources: {}, - /** - * Apply a set of filters against a source image and draw the filtered output - * to the provided destination canvas. - * - * @param {EnhancedFilter} filters The filter to apply. - * @param {HTMLImageElement|HTMLCanvasElement} sourceElement The source to be filtered. - * @param {Number} sourceWidth The width of the source input. - * @param {Number} sourceHeight The height of the source input. - * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn. - */ - applyFilters: function (filters, sourceElement, sourceWidth, sourceHeight, targetCanvas) { - var ctx = targetCanvas.getContext('2d'); - ctx.drawImage(sourceElement, 0, 0, sourceWidth, sourceHeight); - var imageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight); - var originalImageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight); - var pipelineState = { - sourceWidth: sourceWidth, - sourceHeight: sourceHeight, - imageData: imageData, - originalEl: sourceElement, - originalImageData: originalImageData, - canvasEl: targetCanvas, - ctx: ctx, - filterBackend: this, - }; - filters.forEach(function (filter) { - filter.applyTo(pipelineState); - }); - if (pipelineState.imageData.width !== sourceWidth || - pipelineState.imageData.height !== sourceHeight) { - targetCanvas.width = pipelineState.imageData.width; - targetCanvas.height = pipelineState.imageData.height; - } - ctx.putImageData(pipelineState.imageData, 0, 0); - return pipelineState; - }, - }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - /** - * @namespace fabric.Image.filters - * @memberOf fabric.Image - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#image_filters} - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - */ - fabric.Image.filters = fabric.Image.filters || {}; - /** - * Root filter class from which all filter classes inherit from - * @class fabric.Image.filters.BaseFilter - * @memberOf fabric.Image.filters - */ - fabric.Image.filters.BaseFilter = fabric.util.createClass( - /** @lends fabric.Image.filters.BaseFilter.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'BaseFilter', - /** - * Array of attributes to send with buffers. do not modify - * @private - */ - vertexSource: 'attribute vec2 aPosition;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vTexCoord = aPosition;\n' + - 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\n' + - '}', - fragmentSource: 'precision highp float;\n' + - 'varying vec2 vTexCoord;\n' + - 'uniform sampler2D uTexture;\n' + - 'void main() {\n' + - 'gl_FragColor = texture2D(uTexture, vTexCoord);\n' + - '}', - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function (options) { - if (options) { - this.setOptions(options); - } - }, - /** - * Sets filter's properties from options - * @param {Object} [options] Options object - */ - setOptions: function (options) { - for (var prop in options) { - this[prop] = options[prop]; - } - }, - /** - * Compile this filter's shader program. - * - * @param {WebGLRenderingContext} gl The GL canvas context to use for shader compilation. - * @param {String} fragmentSource fragmentShader source for compilation - * @param {String} vertexSource vertexShader source for compilation - */ - createProgram: function (gl, fragmentSource, vertexSource) { - fragmentSource = fragmentSource || this.fragmentSource; - vertexSource = vertexSource || this.vertexSource; - if (webGLProbe.webGLPrecision !== "highp" /* TWebGLPrecision.high */) { - fragmentSource = fragmentSource.replace(new RegExp(`precision ${"highp" /* TWebGLPrecision.high */} float`, 'g'), `precision ${webGLProbe.webGLPrecision} float`); - } - var vertexShader = gl.createShader(gl.VERTEX_SHADER); - gl.shaderSource(vertexShader, vertexSource); - gl.compileShader(vertexShader); - if (!gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS)) { - throw new Error( - // eslint-disable-next-line prefer-template - 'Vertex shader compile error for ' + - this.type + - ': ' + - gl.getShaderInfoLog(vertexShader)); - } - var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER); - gl.shaderSource(fragmentShader, fragmentSource); - gl.compileShader(fragmentShader); - if (!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS)) { - throw new Error( - // eslint-disable-next-line prefer-template - 'Fragment shader compile error for ' + - this.type + - ': ' + - gl.getShaderInfoLog(fragmentShader)); - } - var program = gl.createProgram(); - gl.attachShader(program, vertexShader); - gl.attachShader(program, fragmentShader); - gl.linkProgram(program); - if (!gl.getProgramParameter(program, gl.LINK_STATUS)) { - throw new Error( - // eslint-disable-next-line prefer-template - 'Shader link error for "${this.type}" ' + - gl.getProgramInfoLog(program)); - } - var attributeLocations = this.getAttributeLocations(gl, program); - var uniformLocations = this.getUniformLocations(gl, program) || {}; - uniformLocations.uStepW = gl.getUniformLocation(program, 'uStepW'); - uniformLocations.uStepH = gl.getUniformLocation(program, 'uStepH'); - return { - program: program, - attributeLocations: attributeLocations, - uniformLocations: uniformLocations, - }; - }, - /** - * Return a map of attribute names to WebGLAttributeLocation objects. - * - * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. - * @param {WebGLShaderProgram} program The shader program from which to take attribute locations. - * @returns {Object} A map of attribute names to attribute locations. - */ - getAttributeLocations: function (gl, program) { - return { - aPosition: gl.getAttribLocation(program, 'aPosition'), - }; - }, - /** - * Return a map of uniform names to WebGLUniformLocation objects. - * - * Intended to be overridden by subclasses. - * - * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. - * @param {WebGLShaderProgram} program The shader program from which to take uniform locations. - * @returns {Object} A map of uniform names to uniform locations. - */ - getUniformLocations: function ( /* gl, program */) { - // in case i do not need any special uniform i need to return an empty object - return {}; - }, - /** - * Send attribute data from this filter to its shader program on the GPU. - * - * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. - * @param {Object} attributeLocations A map of shader attribute names to their locations. - */ - sendAttributeData: function (gl, attributeLocations, aPositionData) { - var attributeLocation = attributeLocations.aPosition; - var buffer = gl.createBuffer(); - gl.bindBuffer(gl.ARRAY_BUFFER, buffer); - gl.enableVertexAttribArray(attributeLocation); - gl.vertexAttribPointer(attributeLocation, 2, gl.FLOAT, false, 0, 0); - gl.bufferData(gl.ARRAY_BUFFER, aPositionData, gl.STATIC_DRAW); - }, - _setupFrameBuffer: function (options) { - var gl = options.context, width, height; - if (options.passes > 1) { - width = options.destinationWidth; - height = options.destinationHeight; - if (options.sourceWidth !== width || - options.sourceHeight !== height) { - gl.deleteTexture(options.targetTexture); - options.targetTexture = options.filterBackend.createTexture(gl, width, height); - } - gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, options.targetTexture, 0); - } - else { - // draw last filter on canvas and not to framebuffer. - gl.bindFramebuffer(gl.FRAMEBUFFER, null); - gl.finish(); - } - }, - _swapTextures: function (options) { - options.passes--; - options.pass++; - var temp = options.targetTexture; - options.targetTexture = options.sourceTexture; - options.sourceTexture = temp; - }, - /** - * Generic isNeutral implementation for one parameter based filters. - * Used only in image applyFilters to discard filters that will not have an effect - * on the image - * Other filters may need their own version ( ColorMatrix, HueRotation, gamma, ComposedFilter ) - * @param {Object} options - **/ - isNeutralState: function ( /* options */) { - var main = this.mainParameter, _class = fabric.Image.filters[this.type].prototype; - if (main) { - if (Array.isArray(_class[main])) { - for (var i = _class[main].length; i--;) { - if (this[main][i] !== _class[main][i]) { - return false; - } - } - return true; - } - else { - return _class[main] === this[main]; - } - } - else { - return false; - } - }, - /** - * Apply this filter to the input image data provided. - * - * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be executed - * @param {Boolean} options.webgl Whether to use webgl to render the filter. - * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. - * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - applyTo: function (options) { - if (options.webgl) { - this._setupFrameBuffer(options); - this.applyToWebGL(options); - this._swapTextures(options); - } - else { - this.applyTo2d(options); - } - }, - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function (options) { - if (!options.programCache.hasOwnProperty(this.type)) { - options.programCache[this.type] = this.createProgram(options.context); - } - return options.programCache[this.type]; - }, - /** - * Apply this filter using webgl. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be executed - * @param {Boolean} options.webgl Whether to use webgl to render the filter. - * @param {WebGLTexture} options.originalTexture The texture of the original input image. - * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. - * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - applyToWebGL: function (options) { - var gl = options.context; - var shader = this.retrieveShader(options); - if (options.pass === 0 && options.originalTexture) { - gl.bindTexture(gl.TEXTURE_2D, options.originalTexture); - } - else { - gl.bindTexture(gl.TEXTURE_2D, options.sourceTexture); - } - gl.useProgram(shader.program); - this.sendAttributeData(gl, shader.attributeLocations, options.aPosition); - gl.uniform1f(shader.uniformLocations.uStepW, 1 / options.sourceWidth); - gl.uniform1f(shader.uniformLocations.uStepH, 1 / options.sourceHeight); - this.sendUniformData(gl, shader.uniformLocations); - gl.viewport(0, 0, options.destinationWidth, options.destinationHeight); - gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4); - }, - bindAdditionalTexture: function (gl, texture, textureUnit) { - gl.activeTexture(textureUnit); - gl.bindTexture(gl.TEXTURE_2D, texture); - // reset active texture to 0 as usual - gl.activeTexture(gl.TEXTURE0); - }, - unbindAdditionalTexture: function (gl, textureUnit) { - gl.activeTexture(textureUnit); - gl.bindTexture(gl.TEXTURE_2D, null); - gl.activeTexture(gl.TEXTURE0); - }, - getMainParameter: function () { - return this[this.mainParameter]; - }, - setMainParameter: function (value) { - this[this.mainParameter] = value; - }, - /** - * Send uniform data from this filter to its shader program on the GPU. - * - * Intended to be overridden by subclasses. - * - * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. - * @param {Object} uniformLocations A map of shader uniform names to their locations. - */ - sendUniformData: function ( /* gl, uniformLocations */) { - // Intentionally left blank. Override me in subclasses. - }, - /** - * If needed by a 2d filter, this functions can create an helper canvas to be used - * remember that options.targetCanvas is available for use till end of chain. - */ - createHelpLayer: function (options) { - if (!options.helpLayer) { - var helpLayer = document.createElement('canvas'); - helpLayer.width = options.sourceWidth; - helpLayer.height = options.sourceHeight; - options.helpLayer = helpLayer; - } - }, - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function () { - var object = { type: this.type }, mainP = this.mainParameter; - if (mainP) { - object[mainP] = this[mainP]; - } - return object; - }, - /** - * Returns a JSON representation of an instance - * @return {Object} JSON - */ - toJSON: function () { - // delegate, not alias - return this.toObject(); - }, - }); - /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.BaseFilter.fromObject = function (object) { - return Promise.resolve(new fabric.Image.filters[object.type](object)); + function getLinearCoords(el) { + return { + x1: el.getAttribute('x1') || 0, + y1: el.getAttribute('y1') || 0, + x2: el.getAttribute('x2') || '100%', + y2: el.getAttribute('y2') || 0 }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Color Matrix filter class - * @class fabric.Image.filters.ColorMatrix - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.ColorMatrix#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @see {@Link http://www.webwasp.co.uk/tutorials/219/Color_Matrix_Filter.php} - * @see {@Link http://phoboslab.org/log/2013/11/fast-image-filters-with-webgl} - * @example Kodachrome filter - * var filter = new fabric.Image.filters.ColorMatrix({ - * matrix: [ - 1.1285582396593525, -0.3967382283601348, -0.03992559172921793, 0, 63.72958762196502, - -0.16404339962244616, 1.0835251566291304, -0.05498805115633132, 0, 24.732407896706203, - -0.16786010706155763, -0.5603416277695248, 1.6014850761964943, 0, 35.62982807460946, - 0, 0, 0, 1, 0 - ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.ColorMatrix = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.ColorMatrix.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'ColorMatrix', - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'varying vec2 vTexCoord;\n' + - 'uniform mat4 uColorMatrix;\n' + - 'uniform vec4 uConstants;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'color *= uColorMatrix;\n' + - 'color += uConstants;\n' + - 'gl_FragColor = color;\n' + - '}', - /** - * Colormatrix for pixels. - * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning - * outside the -1, 1 range. - * 0.0039215686 is the part of 1 that get translated to 1 in 2d - * @param {Array} matrix array of 20 numbers. - * @default - */ - matrix: [1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0], - mainParameter: 'matrix', - /** - * Lock the colormatrix on the color part, skipping alpha, mainly for non webgl scenario - * to save some calculation - * @type Boolean - * @default true - */ - colorsOnly: true, - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function (options) { - this.callSuper('initialize', options); - // create a new array instead mutating the prototype with push - this.matrix = this.matrix.slice(0); - }, - /** - * Apply the ColorMatrix operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function (options) { - var imageData = options.imageData, data = imageData.data, iLen = data.length, m = this.matrix, r, g, b, a, i, colorsOnly = this.colorsOnly; - for (i = 0; i < iLen; i += 4) { - r = data[i]; - g = data[i + 1]; - b = data[i + 2]; - if (colorsOnly) { - data[i] = r * m[0] + g * m[1] + b * m[2] + m[4] * 255; - data[i + 1] = r * m[5] + g * m[6] + b * m[7] + m[9] * 255; - data[i + 2] = r * m[10] + g * m[11] + b * m[12] + m[14] * 255; - } - else { - a = data[i + 3]; - data[i] = r * m[0] + g * m[1] + b * m[2] + a * m[3] + m[4] * 255; - data[i + 1] = - r * m[5] + g * m[6] + b * m[7] + a * m[8] + m[9] * 255; - data[i + 2] = - r * m[10] + g * m[11] + b * m[12] + a * m[13] + m[14] * 255; - data[i + 3] = - r * m[15] + g * m[16] + b * m[17] + a * m[18] + m[19] * 255; - } - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uColorMatrix: gl.getUniformLocation(program, 'uColorMatrix'), - uConstants: gl.getUniformLocation(program, 'uConstants'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - var m = this.matrix, matrix = [ - m[0], - m[1], - m[2], - m[3], - m[5], - m[6], - m[7], - m[8], - m[10], - m[11], - m[12], - m[13], - m[15], - m[16], - m[17], - m[18], - ], constants = [m[4], m[9], m[14], m[19]]; - gl.uniformMatrix4fv(uniformLocations.uColorMatrix, false, matrix); - gl.uniform4fv(uniformLocations.uConstants, constants); - }, - }); - /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.ColorMatrix.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Brightness filter class - * @class fabric.Image.filters.Brightness - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Brightness#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Brightness({ - * brightness: 0.05 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Brightness = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Brightness.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Brightness', - /** - * Fragment source for the brightness program - */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uBrightness;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'color.rgb += uBrightness;\n' + - 'gl_FragColor = color;\n' + - '}', - /** - * Brightness value, from -1 to 1. - * translated to -255 to 255 for 2d - * 0.0039215686 is the part of 1 that get translated to 1 in 2d - * @param {Number} brightness - * @default - */ - brightness: 0, - /** - * Describe the property that is the filter parameter - * @param {String} m - * @default - */ - mainParameter: 'brightness', - /** - * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function (options) { - if (this.brightness === 0) { - return; - } - var imageData = options.imageData, data = imageData.data, i, len = data.length, brightness = Math.round(this.brightness * 255); - for (i = 0; i < len; i += 4) { - data[i] = data[i] + brightness; - data[i + 1] = data[i + 1] + brightness; - data[i + 2] = data[i + 2] + brightness; - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uBrightness: gl.getUniformLocation(program, 'uBrightness'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform1f(uniformLocations.uBrightness, this.brightness); - }, - }); + } + + function getRadialCoords(el) { + return { + x1: el.getAttribute('fx') || el.getAttribute('cx') || '50%', + y1: el.getAttribute('fy') || el.getAttribute('cy') || '50%', + r1: 0, + x2: el.getAttribute('cx') || '50%', + y2: el.getAttribute('cy') || '50%', + r2: el.getAttribute('r') || '50%' + }; + } + /* _FROM_SVG_END_ */ + + var clone = fabric.util.object.clone; + + /** + * Gradient class + * @class fabric.Gradient + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#gradients} + * @see {@link fabric.Gradient#initialize} for constructor definition + */ + fabric.Gradient = fabric.util.createClass(/** @lends fabric.Gradient.prototype */ { + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Brightness.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Adapted from html5rocks article - * @class fabric.Image.filters.Convolute - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Convolute#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example Sharpen filter - * var filter = new fabric.Image.filters.Convolute({ - * matrix: [ 0, -1, 0, - * -1, 5, -1, - * 0, -1, 0 ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - * @example Blur filter - * var filter = new fabric.Image.filters.Convolute({ - * matrix: [ 1/9, 1/9, 1/9, - * 1/9, 1/9, 1/9, - * 1/9, 1/9, 1/9 ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - * @example Emboss filter - * var filter = new fabric.Image.filters.Convolute({ - * matrix: [ 1, 1, 1, - * 1, 0.7, -1, - * -1, -1, -1 ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - * @example Emboss filter with opaqueness - * var filter = new fabric.Image.filters.Convolute({ - * opaque: true, - * matrix: [ 1, 1, 1, - * 1, 0.7, -1, - * -1, -1, -1 ] - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.Convolute = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Convolute.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Convolute', - /* - * Opaque value (true/false) - */ - opaque: false, - /* - * matrix for the filter, max 9x9 - */ - matrix: [0, 0, 0, 0, 1, 0, 0, 0, 0], - /** - * Fragment source for the brightness program - */ - fragmentSource: { - Convolute_3_1: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[9];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 0);\n' + - 'for (float h = 0.0; h < 3.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 3.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 1), uStepH * (h - 1));\n' + - 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 3.0 + w)];\n' + - '}\n' + - '}\n' + - 'gl_FragColor = color;\n' + - '}', - Convolute_3_0: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[9];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 1);\n' + - 'for (float h = 0.0; h < 3.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 3.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 1.0), uStepH * (h - 1.0));\n' + - 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 3.0 + w)];\n' + - '}\n' + - '}\n' + - 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.a = alpha;\n' + - '}', - Convolute_5_1: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[25];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 0);\n' + - 'for (float h = 0.0; h < 5.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 5.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\n' + - 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 5.0 + w)];\n' + - '}\n' + - '}\n' + - 'gl_FragColor = color;\n' + - '}', - Convolute_5_0: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[25];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 1);\n' + - 'for (float h = 0.0; h < 5.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 5.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\n' + - 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 5.0 + w)];\n' + - '}\n' + - '}\n' + - 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.a = alpha;\n' + - '}', - Convolute_7_1: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[49];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 0);\n' + - 'for (float h = 0.0; h < 7.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 7.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\n' + - 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 7.0 + w)];\n' + - '}\n' + - '}\n' + - 'gl_FragColor = color;\n' + - '}', - Convolute_7_0: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[49];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 1);\n' + - 'for (float h = 0.0; h < 7.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 7.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\n' + - 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 7.0 + w)];\n' + - '}\n' + - '}\n' + - 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.a = alpha;\n' + - '}', - Convolute_9_1: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[81];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 0);\n' + - 'for (float h = 0.0; h < 9.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 9.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\n' + - 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 9.0 + w)];\n' + - '}\n' + - '}\n' + - 'gl_FragColor = color;\n' + - '}', - Convolute_9_0: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uMatrix[81];\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = vec4(0, 0, 0, 1);\n' + - 'for (float h = 0.0; h < 9.0; h+=1.0) {\n' + - 'for (float w = 0.0; w < 9.0; w+=1.0) {\n' + - 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\n' + - 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 9.0 + w)];\n' + - '}\n' + - '}\n' + - 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.a = alpha;\n' + - '}', - }, - /** - * Constructor - * @memberOf fabric.Image.filters.Convolute.prototype - * @param {Object} [options] Options object - * @param {Boolean} [options.opaque=false] Opaque value (true/false) - * @param {Array} [options.matrix] Filter matrix - */ - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function (options) { - var size = Math.sqrt(this.matrix.length); - var cacheKey = this.type + '_' + size + '_' + (this.opaque ? 1 : 0); - var shaderSource = this.fragmentSource[cacheKey]; - if (!options.programCache.hasOwnProperty(cacheKey)) { - options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); - } - return options.programCache[cacheKey]; - }, - /** - * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function (options) { - var imageData = options.imageData, data = imageData.data, weights = this.matrix, side = Math.round(Math.sqrt(weights.length)), halfSide = Math.floor(side / 2), sw = imageData.width, sh = imageData.height, output = options.ctx.createImageData(sw, sh), dst = output.data, - // go through the destination image pixels - alphaFac = this.opaque ? 1 : 0, r, g, b, a, dstOff, scx, scy, srcOff, wt, x, y, cx, cy; - for (y = 0; y < sh; y++) { - for (x = 0; x < sw; x++) { - dstOff = (y * sw + x) * 4; - // calculate the weighed sum of the source image pixels that - // fall under the convolution matrix - r = 0; - g = 0; - b = 0; - a = 0; - for (cy = 0; cy < side; cy++) { - for (cx = 0; cx < side; cx++) { - scy = y + cy - halfSide; - scx = x + cx - halfSide; - // eslint-disable-next-line max-depth - if (scy < 0 || scy >= sh || scx < 0 || scx >= sw) { - continue; - } - srcOff = (scy * sw + scx) * 4; - wt = weights[cy * side + cx]; - r += data[srcOff] * wt; - g += data[srcOff + 1] * wt; - b += data[srcOff + 2] * wt; - // eslint-disable-next-line max-depth - if (!alphaFac) { - a += data[srcOff + 3] * wt; - } - } - } - dst[dstOff] = r; - dst[dstOff + 1] = g; - dst[dstOff + 2] = b; - if (!alphaFac) { - dst[dstOff + 3] = a; - } - else { - dst[dstOff + 3] = data[dstOff + 3]; - } - } - } - options.imageData = output; - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uMatrix: gl.getUniformLocation(program, 'uMatrix'), - uOpaque: gl.getUniformLocation(program, 'uOpaque'), - uHalfSize: gl.getUniformLocation(program, 'uHalfSize'), - uSize: gl.getUniformLocation(program, 'uSize'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform1fv(uniformLocations.uMatrix, this.matrix); - }, - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function () { - return extend(this.callSuper('toObject'), { - opaque: this.opaque, - matrix: this.matrix, - }); - }, - }); + * Horizontal offset for aligning gradients coming from SVG when outside pathgroups + * @type Number + * @default 0 + */ + offsetX: 0, + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Convolute.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Grayscale image filter class - * @class fabric.Image.filters.Grayscale - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Grayscale(); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Grayscale = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Grayscale.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Grayscale', - fragmentSource: { - average: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'float average = (color.r + color.b + color.g) / 3.0;\n' + - 'gl_FragColor = vec4(average, average, average, color.a);\n' + - '}', - lightness: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform int uMode;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 col = texture2D(uTexture, vTexCoord);\n' + - 'float average = (max(max(col.r, col.g),col.b) + min(min(col.r, col.g),col.b)) / 2.0;\n' + - 'gl_FragColor = vec4(average, average, average, col.a);\n' + - '}', - luminosity: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform int uMode;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 col = texture2D(uTexture, vTexCoord);\n' + - 'float average = 0.21 * col.r + 0.72 * col.g + 0.07 * col.b;\n' + - 'gl_FragColor = vec4(average, average, average, col.a);\n' + - '}', - }, - /** - * Grayscale mode, between 'average', 'lightness', 'luminosity' - * @param {String} type - * @default - */ - mode: 'average', - mainParameter: 'mode', - /** - * Apply the Grayscale operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function (options) { - var imageData = options.imageData, data = imageData.data, i, len = data.length, value, mode = this.mode; - for (i = 0; i < len; i += 4) { - if (mode === 'average') { - value = (data[i] + data[i + 1] + data[i + 2]) / 3; - } - else if (mode === 'lightness') { - value = - (Math.min(data[i], data[i + 1], data[i + 2]) + - Math.max(data[i], data[i + 1], data[i + 2])) / - 2; - } - else if (mode === 'luminosity') { - value = 0.21 * data[i] + 0.72 * data[i + 1] + 0.07 * data[i + 2]; - } - data[i] = value; - data[i + 1] = value; - data[i + 2] = value; - } - }, - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function (options) { - var cacheKey = this.type + '_' + this.mode; - if (!options.programCache.hasOwnProperty(cacheKey)) { - var shaderSource = this.fragmentSource[this.mode]; - options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); - } - return options.programCache[cacheKey]; - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uMode: gl.getUniformLocation(program, 'uMode'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - // default average mode. - var mode = 1; - gl.uniform1i(uniformLocations.uMode, mode); - }, - /** - * Grayscale filter isNeutralState implementation - * The filter is never neutral - * on the image - **/ - isNeutralState: function () { - return false; - }, - }); + * Vertical offset for aligning gradients coming from SVG when outside pathgroups + * @type Number + * @default 0 + */ + offsetY: 0, + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Grayscale.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Invert filter class - * @class fabric.Image.filters.Invert - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Invert(); - * object.filters.push(filter); - * object.applyFilters(canvas.renderAll.bind(canvas)); - */ - filters.Invert = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Invert.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Invert', - /** - * Invert also alpha. - * @param {Boolean} alpha - * @default - **/ - alpha: false, - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform int uInvert;\n' + - 'uniform int uAlpha;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'if (uInvert == 1) {\n' + - 'if (uAlpha == 1) {\n' + - 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,1.0 -color.a);\n' + - '} else {\n' + - 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,color.a);\n' + - '}\n' + - '} else {\n' + - 'gl_FragColor = color;\n' + - '}\n' + - '}', - /** - * Filter invert. if false, does nothing - * @param {Boolean} invert - * @default - */ - invert: true, - mainParameter: 'invert', - /** - * Apply the Invert operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function (options) { - var imageData = options.imageData, data = imageData.data, i, len = data.length; - for (i = 0; i < len; i += 4) { - data[i] = 255 - data[i]; - data[i + 1] = 255 - data[i + 1]; - data[i + 2] = 255 - data[i + 2]; - if (this.alpha) { - data[i + 3] = 255 - data[i + 3]; - } - } - }, - /** - * Invert filter isNeutralState implementation - * Used only in image applyFilters to discard filters that will not have an effect - * on the image - * @param {Object} options - **/ - isNeutralState: function () { - return !this.invert; - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uInvert: gl.getUniformLocation(program, 'uInvert'), - uAlpha: gl.getUniformLocation(program, 'uAlpha'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform1i(uniformLocations.uInvert, this.invert); - gl.uniform1i(uniformLocations.uAlpha, this.alpha); - }, - }); + * A transform matrix to apply to the gradient before painting. + * Imported from svg gradients, is not applied with the current transform in the center. + * Before this transform is applied, the origin point is at the top left corner of the object + * plus the addition of offsetY and offsetX. + * @type Number[] + * @default null + */ + gradientTransform: null, + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Invert.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Noise filter class - * @class fabric.Image.filters.Noise - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Noise#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Noise({ - * noise: 700 - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.Noise = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Noise.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Noise', - /** - * Fragment source for the noise program - */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uStepH;\n' + - 'uniform float uNoise;\n' + - 'uniform float uSeed;\n' + - 'varying vec2 vTexCoord;\n' + - 'float rand(vec2 co, float seed, float vScale) {\n' + - 'return fract(sin(dot(co.xy * vScale ,vec2(12.9898 , 78.233))) * 43758.5453 * (seed + 0.01) / 2.0);\n' + - '}\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'color.rgb += (0.5 - rand(vTexCoord, uSeed, 0.1 / uStepH)) * uNoise;\n' + - 'gl_FragColor = color;\n' + - '}', - /** - * Describe the property that is the filter parameter - * @param {String} m - * @default - */ - mainParameter: 'noise', - /** - * Noise value, from - * @param {Number} noise - * @default - */ - noise: 0, - /** - * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function (options) { - if (this.noise === 0) { - return; - } - var imageData = options.imageData, data = imageData.data, i, len = data.length, noise = this.noise, rand; - for (i = 0, len = data.length; i < len; i += 4) { - rand = (0.5 - Math.random()) * noise; - data[i] += rand; - data[i + 1] += rand; - data[i + 2] += rand; - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uNoise: gl.getUniformLocation(program, 'uNoise'), - uSeed: gl.getUniformLocation(program, 'uSeed'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform1f(uniformLocations.uNoise, this.noise / 255); - gl.uniform1f(uniformLocations.uSeed, Math.random()); - }, - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function () { - return extend(this.callSuper('toObject'), { - noise: this.noise, - }); - }, - }); + * coordinates units for coords. + * If `pixels`, the number of coords are in the same unit of width / height. + * If set as `percentage` the coords are still a number, but 1 means 100% of width + * for the X and 100% of the height for the y. It can be bigger than 1 and negative. + * allowed values pixels or percentage. + * @type String + * @default 'pixels' + */ + gradientUnits: 'pixels', + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Noise.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Pixelate filter class - * @class fabric.Image.filters.Pixelate - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Pixelate#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Pixelate({ - * blocksize: 8 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Pixelate = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Pixelate.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Pixelate', - blocksize: 4, - mainParameter: 'blocksize', - /** - * Fragment source for the Pixelate program - */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uBlocksize;\n' + - 'uniform float uStepW;\n' + - 'uniform float uStepH;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'float blockW = uBlocksize * uStepW;\n' + - 'float blockH = uBlocksize * uStepW;\n' + - 'int posX = int(vTexCoord.x / blockW);\n' + - 'int posY = int(vTexCoord.y / blockH);\n' + - 'float fposX = float(posX);\n' + - 'float fposY = float(posY);\n' + - 'vec2 squareCoords = vec2(fposX * blockW, fposY * blockH);\n' + - 'vec4 color = texture2D(uTexture, squareCoords);\n' + - 'gl_FragColor = color;\n' + - '}', - /** - * Apply the Pixelate operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function (options) { - var imageData = options.imageData, data = imageData.data, iLen = imageData.height, jLen = imageData.width, index, i, j, r, g, b, a, _i, _j, _iLen, _jLen; - for (i = 0; i < iLen; i += this.blocksize) { - for (j = 0; j < jLen; j += this.blocksize) { - index = i * 4 * jLen + j * 4; - r = data[index]; - g = data[index + 1]; - b = data[index + 2]; - a = data[index + 3]; - _iLen = Math.min(i + this.blocksize, iLen); - _jLen = Math.min(j + this.blocksize, jLen); - for (_i = i; _i < _iLen; _i++) { - for (_j = j; _j < _jLen; _j++) { - index = _i * 4 * jLen + _j * 4; - data[index] = r; - data[index + 1] = g; - data[index + 2] = b; - data[index + 3] = a; - } - } - } - } - }, - /** - * Indicate when the filter is not gonna apply changes to the image - **/ - isNeutralState: function () { - return this.blocksize === 1; - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uBlocksize: gl.getUniformLocation(program, 'uBlocksize'), - uStepW: gl.getUniformLocation(program, 'uStepW'), - uStepH: gl.getUniformLocation(program, 'uStepH'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform1f(uniformLocations.uBlocksize, this.blocksize); - }, - }); + * Gradient type linear or radial + * @type String + * @default 'pixels' + */ + type: 'linear', + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Pixelate.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), extend = fabric.util.object.extend, filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Remove white filter class - * @class fabric.Image.filters.RemoveColor - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.RemoveColor#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.RemoveColor({ - * threshold: 0.2, - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.RemoveColor = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.RemoveColor.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'RemoveColor', - /** - * Color to remove, in any format understood by fabric.Color. - * @param {String} type - * @default - */ - color: '#FFFFFF', - /** - * Fragment source for the brightness program - */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec4 uLow;\n' + - 'uniform vec4 uHigh;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'gl_FragColor = texture2D(uTexture, vTexCoord);\n' + - 'if(all(greaterThan(gl_FragColor.rgb,uLow.rgb)) && all(greaterThan(uHigh.rgb,gl_FragColor.rgb))) {\n' + - 'gl_FragColor.a = 0.0;\n' + - '}\n' + - '}', - /** - * distance to actual color, as value up or down from each r,g,b - * between 0 and 1 - **/ - distance: 0.02, - /** - * For color to remove inside distance, use alpha channel for a smoother deletion - * NOT IMPLEMENTED YET - **/ - useAlpha: false, - /** - * Constructor - * @memberOf fabric.Image.filters.RemoveWhite.prototype - * @param {Object} [options] Options object - * @param {Number} [options.color=#RRGGBB] Threshold value - * @param {Number} [options.distance=10] Distance value - */ - /** - * Applies filter to canvas element - * @param {Object} canvasEl Canvas element to apply filter to - */ - applyTo2d: function (options) { - var imageData = options.imageData, data = imageData.data, i, distance = this.distance * 255, r, g, b, source = new Color(this.color).getSource(), lowC = [ - source[0] - distance, - source[1] - distance, - source[2] - distance, - ], highC = [ - source[0] + distance, - source[1] + distance, - source[2] + distance, - ]; - for (i = 0; i < data.length; i += 4) { - r = data[i]; - g = data[i + 1]; - b = data[i + 2]; - if (r > lowC[0] && - g > lowC[1] && - b > lowC[2] && - r < highC[0] && - g < highC[1] && - b < highC[2]) { - data[i + 3] = 0; - } - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uLow: gl.getUniformLocation(program, 'uLow'), - uHigh: gl.getUniformLocation(program, 'uHigh'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - var source = new Color(this.color).getSource(), distance = parseFloat(this.distance), lowC = [ - 0 + source[0] / 255 - distance, - 0 + source[1] / 255 - distance, - 0 + source[2] / 255 - distance, - 1, - ], highC = [ - source[0] / 255 + distance, - source[1] / 255 + distance, - source[2] / 255 + distance, - 1, - ]; - gl.uniform4fv(uniformLocations.uLow, lowC); - gl.uniform4fv(uniformLocations.uHigh, highC); - }, - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function () { - return extend(this.callSuper('toObject'), { - color: this.color, - distance: this.distance, - }); - }, - }); + * Constructor + * @param {Object} options Options object with type, coords, gradientUnits and colorStops + * @param {Object} [options.type] gradient type linear or radial + * @param {Object} [options.gradientUnits] gradient units + * @param {Object} [options.offsetX] SVG import compatibility + * @param {Object} [options.offsetY] SVG import compatibility + * @param {Object[]} options.colorStops contains the colorstops. + * @param {Object} options.coords contains the coords of the gradient + * @param {Number} [options.coords.x1] X coordiante of the first point for linear or of the focal point for radial + * @param {Number} [options.coords.y1] Y coordiante of the first point for linear or of the focal point for radial + * @param {Number} [options.coords.x2] X coordiante of the second point for linear or of the center point for radial + * @param {Number} [options.coords.y2] Y coordiante of the second point for linear or of the center point for radial + * @param {Number} [options.coords.r1] only for radial gradient, radius of the inner circle + * @param {Number} [options.coords.r2] only for radial gradient, radius of the external circle + * @return {fabric.Gradient} thisArg + */ + initialize: function(options) { + options || (options = { }); + options.coords || (options.coords = { }); + + var coords, _this = this; + + // sets everything, then coords and colorstops get sets again + Object.keys(options).forEach(function(option) { + _this[option] = options[option]; + }); + + if (this.id) { + this.id += '_' + fabric.Object.__uid++; + } + else { + this.id = fabric.Object.__uid++; + } + + coords = { + x1: options.coords.x1 || 0, + y1: options.coords.y1 || 0, + x2: options.coords.x2 || 0, + y2: options.coords.y2 || 0 + }; + + if (this.type === 'radial') { + coords.r1 = options.coords.r1 || 0; + coords.r2 = options.coords.r2 || 0; + } + + this.coords = coords; + this.colorStops = options.colorStops.slice(); + }, + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.RemoveColor.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - var matrices = { - Brownie: [ - 0.5997, 0.34553, -0.27082, 0, 0.186, -0.0377, 0.86095, 0.15059, 0, - -0.1449, 0.24113, -0.07441, 0.44972, 0, -0.02965, 0, 0, 0, 1, 0, - ], - Vintage: [ - 0.62793, 0.32021, -0.03965, 0, 0.03784, 0.02578, 0.64411, 0.03259, 0, - 0.02926, 0.0466, -0.08512, 0.52416, 0, 0.02023, 0, 0, 0, 1, 0, - ], - Kodachrome: [ - 1.12855, -0.39673, -0.03992, 0, 0.24991, -0.16404, 1.08352, -0.05498, 0, - 0.09698, -0.16786, -0.56034, 1.60148, 0, 0.13972, 0, 0, 0, 1, 0, - ], - Technicolor: [ - 1.91252, -0.85453, -0.09155, 0, 0.04624, -0.30878, 1.76589, -0.10601, 0, - -0.27589, -0.2311, -0.75018, 1.84759, 0, 0.12137, 0, 0, 0, 1, 0, - ], - Polaroid: [ - 1.438, -0.062, -0.062, 0, 0, -0.122, 1.378, -0.122, 0, 0, -0.016, -0.016, - 1.483, 0, 0, 0, 0, 0, 1, 0, - ], - Sepia: [ - 0.393, 0.769, 0.189, 0, 0, 0.349, 0.686, 0.168, 0, 0, 0.272, 0.534, 0.131, - 0, 0, 0, 0, 0, 1, 0, - ], - BlackWhite: [ - 1.5, 1.5, 1.5, 0, -1, 1.5, 1.5, 1.5, 0, -1, 1.5, 1.5, 1.5, 0, -1, 0, 0, 0, - 1, 0, - ], - }; - for (var key in matrices) { - filters[key] = createClass(filters.ColorMatrix, - /** @lends fabric.Image.filters.Sepia.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: key, - /** - * Colormatrix for the effect - * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning - * outside the -1, 1 range. - * @param {Array} matrix array of 20 numbers. - * @default - */ - matrix: matrices[key], - /** - * Lock the matrix export for this kind of static, parameter less filters. - */ - mainParameter: false, - /** - * Lock the colormatrix on the color part, skipping alpha - */ - colorsOnly: true, + * Adds another colorStop + * @param {Object} colorStop Object with offset and color + * @return {fabric.Gradient} thisArg + */ + addColorStop: function(colorStops) { + for (var position in colorStops) { + var color = new fabric.Color(colorStops[position]); + this.colorStops.push({ + offset: parseFloat(position), + color: color.toRgb(), + opacity: color.getAlpha() }); - fabric.Image.filters[key].fromObject = - fabric.Image.filters.BaseFilter.fromObject; - } -})(typeof exports !== 'undefined' ? exports : window); + } + return this; + }, -//@ts-nocheck -(function (global) { - var fabric = global.fabric, filters = fabric.Image.filters, createClass = fabric.util.createClass; /** - * Color Blend filter class - * @class fabric.Image.filter.BlendColor - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @example - * var filter = new fabric.Image.filters.BlendColor({ - * color: '#000', - * mode: 'multiply' - * }); - * - * var filter = new fabric.Image.filters.BlendImage({ - * image: fabricImageObject, - * mode: 'multiply', - * alpha: 0.5 - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.BlendColor = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Blend.prototype */ { - type: 'BlendColor', - /** - * Color to make the blend operation with. default to a reddish color since black or white - * gives always strong result. - * @type String - * @default - **/ - color: '#F95C63', - /** - * Blend mode for the filter: one of multiply, add, diff, screen, subtract, - * darken, lighten, overlay, exclusion, tint. - * @type String - * @default - **/ - mode: 'multiply', - /** - * alpha value. represent the strength of the blend color operation. - * @type Number - * @default - **/ - alpha: 1, - /** - * Fragment source for the Multiply program - */ - fragmentSource: { - multiply: 'gl_FragColor.rgb *= uColor.rgb;\n', - screen: 'gl_FragColor.rgb = 1.0 - (1.0 - gl_FragColor.rgb) * (1.0 - uColor.rgb);\n', - add: 'gl_FragColor.rgb += uColor.rgb;\n', - diff: 'gl_FragColor.rgb = abs(gl_FragColor.rgb - uColor.rgb);\n', - subtract: 'gl_FragColor.rgb -= uColor.rgb;\n', - lighten: 'gl_FragColor.rgb = max(gl_FragColor.rgb, uColor.rgb);\n', - darken: 'gl_FragColor.rgb = min(gl_FragColor.rgb, uColor.rgb);\n', - exclusion: 'gl_FragColor.rgb += uColor.rgb - 2.0 * (uColor.rgb * gl_FragColor.rgb);\n', - overlay: 'if (uColor.r < 0.5) {\n' + - 'gl_FragColor.r *= 2.0 * uColor.r;\n' + - '} else {\n' + - 'gl_FragColor.r = 1.0 - 2.0 * (1.0 - gl_FragColor.r) * (1.0 - uColor.r);\n' + - '}\n' + - 'if (uColor.g < 0.5) {\n' + - 'gl_FragColor.g *= 2.0 * uColor.g;\n' + - '} else {\n' + - 'gl_FragColor.g = 1.0 - 2.0 * (1.0 - gl_FragColor.g) * (1.0 - uColor.g);\n' + - '}\n' + - 'if (uColor.b < 0.5) {\n' + - 'gl_FragColor.b *= 2.0 * uColor.b;\n' + - '} else {\n' + - 'gl_FragColor.b = 1.0 - 2.0 * (1.0 - gl_FragColor.b) * (1.0 - uColor.b);\n' + - '}\n', - tint: 'gl_FragColor.rgb *= (1.0 - uColor.a);\n' + - 'gl_FragColor.rgb += uColor.rgb;\n', - }, - /** - * build the fragment source for the filters, joining the common part with - * the specific one. - * @param {String} mode the mode of the filter, a key of this.fragmentSource - * @return {String} the source to be compiled - * @private - */ - buildSource: function (mode) { - return ('precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec4 uColor;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'gl_FragColor = color;\n' + - 'if (color.a > 0.0) {\n' + - this.fragmentSource[mode] + - '}\n' + - '}'); - }, - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function (options) { - var cacheKey = this.type + '_' + this.mode, shaderSource; - if (!options.programCache.hasOwnProperty(cacheKey)) { - shaderSource = this.buildSource(this.mode); - options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); - } - return options.programCache[cacheKey]; - }, - /** - * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function (options) { - var imageData = options.imageData, data = imageData.data, iLen = data.length, tr, tg, tb, r, g, b, source, alpha1 = 1 - this.alpha; - source = new Color(this.color).getSource(); - tr = source[0] * this.alpha; - tg = source[1] * this.alpha; - tb = source[2] * this.alpha; - for (var i = 0; i < iLen; i += 4) { - r = data[i]; - g = data[i + 1]; - b = data[i + 2]; - switch (this.mode) { - case 'multiply': - data[i] = (r * tr) / 255; - data[i + 1] = (g * tg) / 255; - data[i + 2] = (b * tb) / 255; - break; - case 'screen': - data[i] = 255 - ((255 - r) * (255 - tr)) / 255; - data[i + 1] = 255 - ((255 - g) * (255 - tg)) / 255; - data[i + 2] = 255 - ((255 - b) * (255 - tb)) / 255; - break; - case 'add': - data[i] = r + tr; - data[i + 1] = g + tg; - data[i + 2] = b + tb; - break; - case 'diff': - case 'difference': - data[i] = Math.abs(r - tr); - data[i + 1] = Math.abs(g - tg); - data[i + 2] = Math.abs(b - tb); - break; - case 'subtract': - data[i] = r - tr; - data[i + 1] = g - tg; - data[i + 2] = b - tb; - break; - case 'darken': - data[i] = Math.min(r, tr); - data[i + 1] = Math.min(g, tg); - data[i + 2] = Math.min(b, tb); - break; - case 'lighten': - data[i] = Math.max(r, tr); - data[i + 1] = Math.max(g, tg); - data[i + 2] = Math.max(b, tb); - break; - case 'overlay': - data[i] = - tr < 128 - ? (2 * r * tr) / 255 - : 255 - (2 * (255 - r) * (255 - tr)) / 255; - data[i + 1] = - tg < 128 - ? (2 * g * tg) / 255 - : 255 - (2 * (255 - g) * (255 - tg)) / 255; - data[i + 2] = - tb < 128 - ? (2 * b * tb) / 255 - : 255 - (2 * (255 - b) * (255 - tb)) / 255; - break; - case 'exclusion': - data[i] = tr + r - (2 * tr * r) / 255; - data[i + 1] = tg + g - (2 * tg * g) / 255; - data[i + 2] = tb + b - (2 * tb * b) / 255; - break; - case 'tint': - data[i] = tr + r * alpha1; - data[i + 1] = tg + g * alpha1; - data[i + 2] = tb + b * alpha1; - } - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uColor: gl.getUniformLocation(program, 'uColor'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - var source = new Color(this.color).getSource(); - source[0] = (this.alpha * source[0]) / 255; - source[1] = (this.alpha * source[1]) / 255; - source[2] = (this.alpha * source[2]) / 255; - source[3] = this.alpha; - gl.uniform4fv(uniformLocations.uColor, source); - }, - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function () { - return { - type: this.type, - color: this.color, - mode: this.mode, - alpha: this.alpha, - }; - }, - }); + * Returns object representation of a gradient + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} + */ + toObject: function(propertiesToInclude) { + var object = { + type: this.type, + coords: this.coords, + colorStops: this.colorStops, + offsetX: this.offsetX, + offsetY: this.offsetY, + gradientUnits: this.gradientUnits, + gradientTransform: this.gradientTransform ? this.gradientTransform.concat() : this.gradientTransform + }; + fabric.util.populateWithProperties(this, object, propertiesToInclude); + + return object; + }, + + /* _TO_SVG_START_ */ /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} + * Returns SVG representation of an gradient + * @param {Object} object Object to create a gradient for + * @return {String} SVG representation of an gradient (linear/radial) */ - fabric.Image.filters.BlendColor.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); + toSVG: function(object, options) { + var coords = clone(this.coords, true), i, len, options = options || {}, + markup, commonAttributes, colorStops = clone(this.colorStops, true), + needsSwap = coords.r1 > coords.r2, + transform = this.gradientTransform ? this.gradientTransform.concat() : fabric.iMatrix.concat(), + offsetX = -this.offsetX, offsetY = -this.offsetY, + withViewport = !!options.additionalTransform, + gradientUnits = this.gradientUnits === 'pixels' ? 'userSpaceOnUse' : 'objectBoundingBox'; + // colorStops must be sorted ascending + colorStops.sort(function(a, b) { + return a.offset - b.offset; + }); + + if (gradientUnits === 'objectBoundingBox') { + offsetX /= object.width; + offsetY /= object.height; + } + else { + offsetX += object.width / 2; + offsetY += object.height / 2; + } + if (object.type === 'path' && this.gradientUnits !== 'percentage') { + offsetX -= object.pathOffset.x; + offsetY -= object.pathOffset.y; + } + + + transform[4] -= offsetX; + transform[5] -= offsetY; + + commonAttributes = 'id="SVGID_' + this.id + + '" gradientUnits="' + gradientUnits + '"'; + commonAttributes += ' gradientTransform="' + (withViewport ? + options.additionalTransform + ' ' : '') + fabric.util.matrixToSVG(transform) + '" '; + + if (this.type === 'linear') { + markup = [ + '\n' + ]; + } + else if (this.type === 'radial') { + // svg radial gradient has just 1 radius. the biggest. + markup = [ + '\n' + ]; + } + + if (this.type === 'radial') { + if (needsSwap) { + // svg goes from internal to external radius. if radius are inverted, swap color stops. + colorStops = colorStops.concat(); + colorStops.reverse(); + for (i = 0, len = colorStops.length; i < len; i++) { + colorStops[i].offset = 1 - colorStops[i].offset; + } + } + var minRadius = Math.min(coords.r1, coords.r2); + if (minRadius > 0) { + // i have to shift all colorStops and add new one in 0. + var maxRadius = Math.max(coords.r1, coords.r2), + percentageShift = minRadius / maxRadius; + for (i = 0, len = colorStops.length; i < len; i++) { + colorStops[i].offset += percentageShift * (1 - colorStops[i].offset); + } + } + } + + for (i = 0, len = colorStops.length; i < len; i++) { + var colorStop = colorStops[i]; + markup.push( + '\n' + ); + } + + markup.push((this.type === 'linear' ? '\n' : '\n')); + + return markup.join(''); + }, + /* _TO_SVG_END_ */ -//@ts-nocheck -(function (global) { - var fabric = global.fabric, filters = fabric.Image.filters, createClass = fabric.util.createClass; /** - * Image Blend filter class - * @class fabric.Image.filter.BlendImage - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @example - * var filter = new fabric.Image.filters.BlendColor({ - * color: '#000', - * mode: 'multiply' - * }); - * - * var filter = new fabric.Image.filters.BlendImage({ - * image: fabricImageObject, - * mode: 'multiply', - * alpha: 0.5 - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.BlendImage = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.BlendImage.prototype */ { - type: 'BlendImage', - /** - * Color to make the blend operation with. default to a reddish color since black or white - * gives always strong result. - **/ - image: null, - /** - * Blend mode for the filter (one of "multiply", "mask") - * @type String - * @default - **/ - mode: 'multiply', - /** - * alpha value. represent the strength of the blend image operation. - * not implemented. - **/ - alpha: 1, - vertexSource: 'attribute vec2 aPosition;\n' + - 'varying vec2 vTexCoord;\n' + - 'varying vec2 vTexCoord2;\n' + - 'uniform mat3 uTransformMatrix;\n' + - 'void main() {\n' + - 'vTexCoord = aPosition;\n' + - 'vTexCoord2 = (uTransformMatrix * vec3(aPosition, 1.0)).xy;\n' + - 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\n' + - '}', - /** - * Fragment source for the Multiply program - */ - fragmentSource: { - multiply: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform sampler2D uImage;\n' + - 'uniform vec4 uColor;\n' + - 'varying vec2 vTexCoord;\n' + - 'varying vec2 vTexCoord2;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'vec4 color2 = texture2D(uImage, vTexCoord2);\n' + - 'color.rgba *= color2.rgba;\n' + - 'gl_FragColor = color;\n' + - '}', - mask: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform sampler2D uImage;\n' + - 'uniform vec4 uColor;\n' + - 'varying vec2 vTexCoord;\n' + - 'varying vec2 vTexCoord2;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'vec4 color2 = texture2D(uImage, vTexCoord2);\n' + - 'color.a = color2.a;\n' + - 'gl_FragColor = color;\n' + - '}', - }, - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function (options) { - var cacheKey = this.type + '_' + this.mode; - var shaderSource = this.fragmentSource[this.mode]; - if (!options.programCache.hasOwnProperty(cacheKey)) { - options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); - } - return options.programCache[cacheKey]; - }, - applyToWebGL: function (options) { - // load texture to blend. - var gl = options.context, texture = this.createTexture(options.filterBackend, this.image); - this.bindAdditionalTexture(gl, texture, gl.TEXTURE1); - this.callSuper('applyToWebGL', options); - this.unbindAdditionalTexture(gl, gl.TEXTURE1); - }, - createTexture: function (backend, image) { - return backend.getCachedTexture(image.cacheKey, image._element); - }, - /** - * Calculate a transformMatrix to adapt the image to blend over - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - calculateMatrix: function () { - var image = this.image, width = image._element.width, height = image._element.height; - return [ - 1 / image.scaleX, - 0, - 0, - 0, - 1 / image.scaleY, - 0, - -image.left / width, - -image.top / height, - 1, - ]; - }, - /** - * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function (options) { - var imageData = options.imageData, resources = options.filterBackend.resources, data = imageData.data, iLen = data.length, width = imageData.width, height = imageData.height, tr, tg, tb, ta, r, g, b, a, canvas1, context, image = this.image, blendData; - if (!resources.blendImage) { - resources.blendImage = fabric.util.createCanvasElement(); - } - canvas1 = resources.blendImage; - context = canvas1.getContext('2d'); - if (canvas1.width !== width || canvas1.height !== height) { - canvas1.width = width; - canvas1.height = height; - } - else { - context.clearRect(0, 0, width, height); - } - context.setTransform(image.scaleX, 0, 0, image.scaleY, image.left, image.top); - context.drawImage(image._element, 0, 0, width, height); - blendData = context.getImageData(0, 0, width, height).data; - for (var i = 0; i < iLen; i += 4) { - r = data[i]; - g = data[i + 1]; - b = data[i + 2]; - a = data[i + 3]; - tr = blendData[i]; - tg = blendData[i + 1]; - tb = blendData[i + 2]; - ta = blendData[i + 3]; - switch (this.mode) { - case 'multiply': - data[i] = (r * tr) / 255; - data[i + 1] = (g * tg) / 255; - data[i + 2] = (b * tb) / 255; - data[i + 3] = (a * ta) / 255; - break; - case 'mask': - data[i + 3] = ta; - break; - } - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uTransformMatrix: gl.getUniformLocation(program, 'uTransformMatrix'), - uImage: gl.getUniformLocation(program, 'uImage'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - var matrix = this.calculateMatrix(); - gl.uniform1i(uniformLocations.uImage, 1); // texture unit 1. - gl.uniformMatrix3fv(uniformLocations.uTransformMatrix, false, matrix); - }, - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function () { - return { - type: this.type, - image: this.image && this.image.toObject(), - mode: this.mode, - alpha: this.alpha, - }; - }, - }); + * Returns an instance of CanvasGradient + * @param {CanvasRenderingContext2D} ctx Context to render on + * @return {CanvasGradient} + */ + toLive: function(ctx) { + var gradient, coords = fabric.util.object.clone(this.coords), i, len; + + if (!this.type) { + return; + } + + if (this.type === 'linear') { + gradient = ctx.createLinearGradient( + coords.x1, coords.y1, coords.x2, coords.y2); + } + else if (this.type === 'radial') { + gradient = ctx.createRadialGradient( + coords.x1, coords.y1, coords.r1, coords.x2, coords.y2, coords.r2); + } + + for (i = 0, len = this.colorStops.length; i < len; i++) { + var color = this.colorStops[i].color, + opacity = this.colorStops[i].opacity, + offset = this.colorStops[i].offset; + + if (typeof opacity !== 'undefined') { + color = new fabric.Color(color).setAlpha(opacity).toRgba(); + } + gradient.addColorStop(offset, color); + } + + return gradient; + } + }); + + fabric.util.object.extend(fabric.Gradient, { + + /* _FROM_SVG_START_ */ /** - * Create filter instance from an object representation + * Returns {@link fabric.Gradient} instance from an SVG element * @static - * @param {object} object Object to create an instance from - * @param {object} [options] - * @param {AbortSignal} [options.signal] handle aborting image loading, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @returns {Promise} - */ - fabric.Image.filters.BlendImage.fromObject = function (object, options) { - return fabric.Image.fromObject(object.image, options).then(function (image) { - return new fabric.Image.filters.BlendImage(Object.assign({}, object, { image: image })); - }); - }; -})(typeof exports !== 'undefined' ? exports : window); + * @memberOf fabric.Gradient + * @param {SVGGradientElement} el SVG gradient element + * @param {fabric.Object} instance + * @param {String} opacityAttr A fill-opacity or stroke-opacity attribute to multiply to each stop's opacity. + * @param {Object} svgOptions an object containing the size of the SVG in order to parse correctly gradients + * that uses gradientUnits as 'userSpaceOnUse' and percentages. + * @param {Object.number} viewBoxWidth width part of the viewBox attribute on svg + * @param {Object.number} viewBoxHeight height part of the viewBox attribute on svg + * @param {Object.number} width width part of the svg tag if viewBox is not specified + * @param {Object.number} height height part of the svg tag if viewBox is not specified + * @return {fabric.Gradient} Gradient instance + * @see http://www.w3.org/TR/SVG/pservers.html#LinearGradientElement + * @see http://www.w3.org/TR/SVG/pservers.html#RadialGradientElement + */ + fromElement: function(el, instance, opacityAttr, svgOptions) { + /** + * @example: + * + * + * + * + * + * + * OR + * + * + * + * + * + * + * OR + * + * + * + * + * + * + * + * OR + * + * + * + * + * + * + * + */ -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), pow = Math.pow, floor = Math.floor, sqrt = Math.sqrt, abs = Math.abs, round = Math.round, sin = Math.sin, ceil = Math.ceil, filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Resize image filter class - * @class fabric.Image.filters.Resize - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Resize(); - * object.filters.push(filter); - * object.applyFilters(canvas.renderAll.bind(canvas)); - */ - filters.Resize = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Resize.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Resize', - /** - * Resize type - * for webgl resizeType is just lanczos, for canvas2d can be: - * bilinear, hermite, sliceHack, lanczos. - * @param {String} resizeType - * @default - */ - resizeType: 'hermite', - /** - * Scale factor for resizing, x axis - * @param {Number} scaleX - * @default - */ - scaleX: 1, - /** - * Scale factor for resizing, y axis - * @param {Number} scaleY - * @default - */ - scaleY: 1, - /** - * LanczosLobes parameter for lanczos filter, valid for resizeType lanczos - * @param {Number} lanczosLobes - * @default - */ - lanczosLobes: 3, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uDelta: gl.getUniformLocation(program, 'uDelta'), - uTaps: gl.getUniformLocation(program, 'uTaps'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform2fv(uniformLocations.uDelta, this.horizontal ? [1 / this.width, 0] : [0, 1 / this.height]); - gl.uniform1fv(uniformLocations.uTaps, this.taps); - }, - /** - * Retrieves the cached shader. - * @param {Object} options - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - retrieveShader: function (options) { - var filterWindow = this.getFilterWindow(), cacheKey = this.type + '_' + filterWindow; - if (!options.programCache.hasOwnProperty(cacheKey)) { - var fragmentShader = this.generateShader(filterWindow); - options.programCache[cacheKey] = this.createProgram(options.context, fragmentShader); - } - return options.programCache[cacheKey]; - }, - getFilterWindow: function () { - var scale = this.tempScale; - return Math.ceil(this.lanczosLobes / scale); - }, - getTaps: function () { - var lobeFunction = this.lanczosCreate(this.lanczosLobes), scale = this.tempScale, filterWindow = this.getFilterWindow(), taps = new Array(filterWindow); - for (var i = 1; i <= filterWindow; i++) { - taps[i - 1] = lobeFunction(i * scale); - } - return taps; - }, - /** - * Generate vertex and shader sources from the necessary steps numbers - * @param {Number} filterWindow - */ - generateShader: function (filterWindow) { - var offsets = new Array(filterWindow), fragmentShader = this.fragmentSourceTOP, filterWindow; - for (var i = 1; i <= filterWindow; i++) { - offsets[i - 1] = i + '.0 * uDelta'; - } - fragmentShader += 'uniform float uTaps[' + filterWindow + '];\n'; - fragmentShader += 'void main() {\n'; - fragmentShader += ' vec4 color = texture2D(uTexture, vTexCoord);\n'; - fragmentShader += ' float sum = 1.0;\n'; - offsets.forEach(function (offset, i) { - fragmentShader += - ' color += texture2D(uTexture, vTexCoord + ' + - offset + - ') * uTaps[' + - i + - '];\n'; - fragmentShader += - ' color += texture2D(uTexture, vTexCoord - ' + - offset + - ') * uTaps[' + - i + - '];\n'; - fragmentShader += ' sum += 2.0 * uTaps[' + i + '];\n'; - }); - fragmentShader += ' gl_FragColor = color / sum;\n'; - fragmentShader += '}'; - return fragmentShader; - }, - fragmentSourceTOP: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec2 uDelta;\n' + - 'varying vec2 vTexCoord;\n', - /** - * Apply the resize filter to the image - * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be executed - * @param {Boolean} options.webgl Whether to use webgl to render the filter. - * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. - * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - applyTo: function (options) { - if (options.webgl) { - options.passes++; - this.width = options.sourceWidth; - this.horizontal = true; - this.dW = Math.round(this.width * this.scaleX); - this.dH = options.sourceHeight; - this.tempScale = this.dW / this.width; - this.taps = this.getTaps(); - options.destinationWidth = this.dW; - this._setupFrameBuffer(options); - this.applyToWebGL(options); - this._swapTextures(options); - options.sourceWidth = options.destinationWidth; - this.height = options.sourceHeight; - this.horizontal = false; - this.dH = Math.round(this.height * this.scaleY); - this.tempScale = this.dH / this.height; - this.taps = this.getTaps(); - options.destinationHeight = this.dH; - this._setupFrameBuffer(options); - this.applyToWebGL(options); - this._swapTextures(options); - options.sourceHeight = options.destinationHeight; - } - else { - this.applyTo2d(options); - } - }, - isNeutralState: function () { - return this.scaleX === 1 && this.scaleY === 1; - }, - lanczosCreate: function (lobes) { - return function (x) { - if (x >= lobes || x <= -lobes) { - return 0.0; - } - if (x < 1.1920929e-7 && x > -1.1920929e-7) { - return 1.0; - } - x *= Math.PI; - var xx = x / lobes; - return ((sin(x) / x) * sin(xx)) / xx; - }; - }, - /** - * Applies filter to canvas element - * @memberOf fabric.Image.filters.Resize.prototype - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} scaleX - * @param {Number} scaleY - */ - applyTo2d: function (options) { - var imageData = options.imageData, scaleX = this.scaleX, scaleY = this.scaleY; - this.rcpScaleX = 1 / scaleX; - this.rcpScaleY = 1 / scaleY; - var oW = imageData.width, oH = imageData.height, dW = round(oW * scaleX), dH = round(oH * scaleY), newData; - if (this.resizeType === 'sliceHack') { - newData = this.sliceByTwo(options, oW, oH, dW, dH); - } - else if (this.resizeType === 'hermite') { - newData = this.hermiteFastResize(options, oW, oH, dW, dH); - } - else if (this.resizeType === 'bilinear') { - newData = this.bilinearFiltering(options, oW, oH, dW, dH); - } - else if (this.resizeType === 'lanczos') { - newData = this.lanczosResize(options, oW, oH, dW, dH); - } - options.imageData = newData; - }, - /** - * Filter sliceByTwo - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} oW Original Width - * @param {Number} oH Original Height - * @param {Number} dW Destination Width - * @param {Number} dH Destination Height - * @returns {ImageData} - */ - sliceByTwo: function (options, oW, oH, dW, dH) { - var imageData = options.imageData, mult = 0.5, doneW = false, doneH = false, stepW = oW * mult, stepH = oH * mult, resources = fabric.filterBackend.resources, tmpCanvas, ctx, sX = 0, sY = 0, dX = oW, dY = 0; - if (!resources.sliceByTwo) { - resources.sliceByTwo = document.createElement('canvas'); - } - tmpCanvas = resources.sliceByTwo; - if (tmpCanvas.width < oW * 1.5 || tmpCanvas.height < oH) { - tmpCanvas.width = oW * 1.5; - tmpCanvas.height = oH; - } - ctx = tmpCanvas.getContext('2d'); - ctx.clearRect(0, 0, oW * 1.5, oH); - ctx.putImageData(imageData, 0, 0); - dW = floor(dW); - dH = floor(dH); - while (!doneW || !doneH) { - oW = stepW; - oH = stepH; - if (dW < floor(stepW * mult)) { - stepW = floor(stepW * mult); - } - else { - stepW = dW; - doneW = true; - } - if (dH < floor(stepH * mult)) { - stepH = floor(stepH * mult); - } - else { - stepH = dH; - doneH = true; - } - ctx.drawImage(tmpCanvas, sX, sY, oW, oH, dX, dY, stepW, stepH); - sX = dX; - sY = dY; - dY += stepH; - } - return ctx.getImageData(sX, sY, dW, dH); - }, - /** - * Filter lanczosResize - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} oW Original Width - * @param {Number} oH Original Height - * @param {Number} dW Destination Width - * @param {Number} dH Destination Height - * @returns {ImageData} - */ - lanczosResize: function (options, oW, oH, dW, dH) { - function process(u) { - var v, i, weight, idx, a, red, green, blue, alpha, fX, fY; - center.x = (u + 0.5) * ratioX; - icenter.x = floor(center.x); - for (v = 0; v < dH; v++) { - center.y = (v + 0.5) * ratioY; - icenter.y = floor(center.y); - a = 0; - red = 0; - green = 0; - blue = 0; - alpha = 0; - for (i = icenter.x - range2X; i <= icenter.x + range2X; i++) { - if (i < 0 || i >= oW) { - continue; - } - fX = floor(1000 * abs(i - center.x)); - if (!cacheLanc[fX]) { - cacheLanc[fX] = {}; - } - for (var j = icenter.y - range2Y; j <= icenter.y + range2Y; j++) { - if (j < 0 || j >= oH) { - continue; - } - fY = floor(1000 * abs(j - center.y)); - if (!cacheLanc[fX][fY]) { - cacheLanc[fX][fY] = lanczos(sqrt(pow(fX * rcpRatioX, 2) + pow(fY * rcpRatioY, 2)) / 1000); - } - weight = cacheLanc[fX][fY]; - if (weight > 0) { - idx = (j * oW + i) * 4; - a += weight; - red += weight * srcData[idx]; - green += weight * srcData[idx + 1]; - blue += weight * srcData[idx + 2]; - alpha += weight * srcData[idx + 3]; - } - } - } - idx = (v * dW + u) * 4; - destData[idx] = red / a; - destData[idx + 1] = green / a; - destData[idx + 2] = blue / a; - destData[idx + 3] = alpha / a; - } - if (++u < dW) { - return process(u); - } - else { - return destImg; - } - } - var srcData = options.imageData.data, destImg = options.ctx.createImageData(dW, dH), destData = destImg.data, lanczos = this.lanczosCreate(this.lanczosLobes), ratioX = this.rcpScaleX, ratioY = this.rcpScaleY, rcpRatioX = 2 / this.rcpScaleX, rcpRatioY = 2 / this.rcpScaleY, range2X = ceil((ratioX * this.lanczosLobes) / 2), range2Y = ceil((ratioY * this.lanczosLobes) / 2), cacheLanc = {}, center = {}, icenter = {}; - return process(0); - }, - /** - * bilinearFiltering - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} oW Original Width - * @param {Number} oH Original Height - * @param {Number} dW Destination Width - * @param {Number} dH Destination Height - * @returns {ImageData} - */ - bilinearFiltering: function (options, oW, oH, dW, dH) { - var a, b, c, d, x, y, i, j, xDiff, yDiff, chnl, color, offset = 0, origPix, ratioX = this.rcpScaleX, ratioY = this.rcpScaleY, w4 = 4 * (oW - 1), img = options.imageData, pixels = img.data, destImage = options.ctx.createImageData(dW, dH), destPixels = destImage.data; - for (i = 0; i < dH; i++) { - for (j = 0; j < dW; j++) { - x = floor(ratioX * j); - y = floor(ratioY * i); - xDiff = ratioX * j - x; - yDiff = ratioY * i - y; - origPix = 4 * (y * oW + x); - for (chnl = 0; chnl < 4; chnl++) { - a = pixels[origPix + chnl]; - b = pixels[origPix + 4 + chnl]; - c = pixels[origPix + w4 + chnl]; - d = pixels[origPix + w4 + 4 + chnl]; - color = - a * (1 - xDiff) * (1 - yDiff) + - b * xDiff * (1 - yDiff) + - c * yDiff * (1 - xDiff) + - d * xDiff * yDiff; - destPixels[offset++] = color; - } - } - } - return destImage; - }, - /** - * hermiteFastResize - * @param {Object} canvasEl Canvas element to apply filter to - * @param {Number} oW Original Width - * @param {Number} oH Original Height - * @param {Number} dW Destination Width - * @param {Number} dH Destination Height - * @returns {ImageData} - */ - hermiteFastResize: function (options, oW, oH, dW, dH) { - var ratioW = this.rcpScaleX, ratioH = this.rcpScaleY, ratioWHalf = ceil(ratioW / 2), ratioHHalf = ceil(ratioH / 2), img = options.imageData, data = img.data, img2 = options.ctx.createImageData(dW, dH), data2 = img2.data; - for (var j = 0; j < dH; j++) { - for (var i = 0; i < dW; i++) { - var x2 = (i + j * dW) * 4, weight = 0, weights = 0, weightsAlpha = 0, gxR = 0, gxG = 0, gxB = 0, gxA = 0, centerY = (j + 0.5) * ratioH; - for (var yy = floor(j * ratioH); yy < (j + 1) * ratioH; yy++) { - var dy = abs(centerY - (yy + 0.5)) / ratioHHalf, centerX = (i + 0.5) * ratioW, w0 = dy * dy; - for (var xx = floor(i * ratioW); xx < (i + 1) * ratioW; xx++) { - var dx = abs(centerX - (xx + 0.5)) / ratioWHalf, w = sqrt(w0 + dx * dx); - /* eslint-disable max-depth */ - if (w > 1 && w < -1) { - continue; - } - //hermite filter - weight = 2 * w * w * w - 3 * w * w + 1; - if (weight > 0) { - dx = 4 * (xx + yy * oW); - //alpha - gxA += weight * data[dx + 3]; - weightsAlpha += weight; - //colors - if (data[dx + 3] < 255) { - weight = (weight * data[dx + 3]) / 250; - } - gxR += weight * data[dx]; - gxG += weight * data[dx + 1]; - gxB += weight * data[dx + 2]; - weights += weight; - } - /* eslint-enable max-depth */ - } - } - data2[x2] = gxR / weights; - data2[x2 + 1] = gxG / weights; - data2[x2 + 2] = gxB / weights; - data2[x2 + 3] = gxA / weightsAlpha; - } - } - return img2; - }, - /** - * Returns object representation of an instance - * @return {Object} Object representation of an instance - */ - toObject: function () { - return { - type: this.type, - scaleX: this.scaleX, - scaleY: this.scaleY, - resizeType: this.resizeType, - lanczosLobes: this.lanczosLobes, - }; - }, + var multiplier = parseFloat(opacityAttr) / (/%$/.test(opacityAttr) ? 100 : 1); + multiplier = multiplier < 0 ? 0 : multiplier > 1 ? 1 : multiplier; + if (isNaN(multiplier)) { + multiplier = 1; + } + + var colorStopEls = el.getElementsByTagName('stop'), + type, + gradientUnits = el.getAttribute('gradientUnits') === 'userSpaceOnUse' ? + 'pixels' : 'percentage', + gradientTransform = el.getAttribute('gradientTransform') || '', + colorStops = [], + coords, i, offsetX = 0, offsetY = 0, + transformMatrix; + if (el.nodeName === 'linearGradient' || el.nodeName === 'LINEARGRADIENT') { + type = 'linear'; + coords = getLinearCoords(el); + } + else { + type = 'radial'; + coords = getRadialCoords(el); + } + + for (i = colorStopEls.length; i--; ) { + colorStops.push(getColorStop(colorStopEls[i], multiplier)); + } + + transformMatrix = fabric.parseTransformAttribute(gradientTransform); + + __convertPercentUnitsToValues(instance, coords, svgOptions, gradientUnits); + + if (gradientUnits === 'pixels') { + offsetX = -instance.left; + offsetY = -instance.top; + } + + var gradient = new fabric.Gradient({ + id: el.getAttribute('id'), + type: type, + coords: coords, + colorStops: colorStops, + gradientUnits: gradientUnits, + gradientTransform: transformMatrix, + offsetX: offsetX, + offsetY: offsetY, + }); + + return gradient; + } + /* _FROM_SVG_END_ */ + }); + + /** + * @private + */ + function __convertPercentUnitsToValues(instance, options, svgOptions, gradientUnits) { + var propValue, finalValue; + Object.keys(options).forEach(function(prop) { + propValue = options[prop]; + if (propValue === 'Infinity') { + finalValue = 1; + } + else if (propValue === '-Infinity') { + finalValue = 0; + } + else { + finalValue = parseFloat(options[prop], 10); + if (typeof propValue === 'string' && /^(\d+\.\d+)%|(\d+)%$/.test(propValue)) { + finalValue *= 0.01; + if (gradientUnits === 'pixels') { + // then we need to fix those percentages here in svg parsing + if (prop === 'x1' || prop === 'x2' || prop === 'r2') { + finalValue *= svgOptions.viewBoxWidth || svgOptions.width; + } + if (prop === 'y1' || prop === 'y2') { + finalValue *= svgOptions.viewBoxHeight || svgOptions.height; + } + } + } + } + options[prop] = finalValue; }); + } +})(); + + +(function() { + + 'use strict'; + + var toFixed = fabric.util.toFixed; + + /** + * Pattern class + * @class fabric.Pattern + * @see {@link http://fabricjs.com/patterns|Pattern demo} + * @see {@link http://fabricjs.com/dynamic-patterns|DynamicPattern demo} + * @see {@link fabric.Pattern#initialize} for constructor definition + */ + + + fabric.Pattern = fabric.util.createClass(/** @lends fabric.Pattern.prototype */ { + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Resize.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Contrast filter class - * @class fabric.Image.filters.Contrast - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Contrast#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Contrast({ - * contrast: 0.25 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Contrast = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Contrast.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Contrast', - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uContrast;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'float contrastF = 1.015 * (uContrast + 1.0) / (1.0 * (1.015 - uContrast));\n' + - 'color.rgb = contrastF * (color.rgb - 0.5) + 0.5;\n' + - 'gl_FragColor = color;\n' + - '}', - /** - * contrast value, range from -1 to 1. - * @param {Number} contrast - * @default 0 - */ - contrast: 0, - mainParameter: 'contrast', - /** - * Constructor - * @memberOf fabric.Image.filters.Contrast.prototype - * @param {Object} [options] Options object - * @param {Number} [options.contrast=0] Value to contrast the image up (-1...1) - */ - /** - * Apply the Contrast operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function (options) { - if (this.contrast === 0) { - return; - } - var imageData = options.imageData, i, len, data = imageData.data, len = data.length, contrast = Math.floor(this.contrast * 255), contrastF = (259 * (contrast + 255)) / (255 * (259 - contrast)); - for (i = 0; i < len; i += 4) { - data[i] = contrastF * (data[i] - 128) + 128; - data[i + 1] = contrastF * (data[i + 1] - 128) + 128; - data[i + 2] = contrastF * (data[i + 2] - 128) + 128; - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uContrast: gl.getUniformLocation(program, 'uContrast'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform1f(uniformLocations.uContrast, this.contrast); - }, - }); + * Repeat property of a pattern (one of repeat, repeat-x, repeat-y or no-repeat) + * @type String + * @default + */ + repeat: 'repeat', + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Contrast.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Saturate filter class - * @class fabric.Image.filters.Saturation - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Saturation#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Saturation({ - * saturation: 1 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Saturation = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Saturation.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Saturation', - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uSaturation;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'float rgMax = max(color.r, color.g);\n' + - 'float rgbMax = max(rgMax, color.b);\n' + - 'color.r += rgbMax != color.r ? (rgbMax - color.r) * uSaturation : 0.00;\n' + - 'color.g += rgbMax != color.g ? (rgbMax - color.g) * uSaturation : 0.00;\n' + - 'color.b += rgbMax != color.b ? (rgbMax - color.b) * uSaturation : 0.00;\n' + - 'gl_FragColor = color;\n' + - '}', - /** - * Saturation value, from -1 to 1. - * Increases/decreases the color saturation. - * A value of 0 has no effect. - * - * @param {Number} saturation - * @default - */ - saturation: 0, - mainParameter: 'saturation', - /** - * Constructor - * @memberOf fabric.Image.filters.Saturate.prototype - * @param {Object} [options] Options object - * @param {Number} [options.saturate=0] Value to saturate the image (-1...1) - */ - /** - * Apply the Saturation operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function (options) { - if (this.saturation === 0) { - return; - } - var imageData = options.imageData, data = imageData.data, len = data.length, adjust = -this.saturation, i, max; - for (i = 0; i < len; i += 4) { - max = Math.max(data[i], data[i + 1], data[i + 2]); - data[i] += max !== data[i] ? (max - data[i]) * adjust : 0; - data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * adjust : 0; - data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * adjust : 0; - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uSaturation: gl.getUniformLocation(program, 'uSaturation'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform1f(uniformLocations.uSaturation, -this.saturation); - }, - }); + * Pattern horizontal offset from object's left/top corner + * @type Number + * @default + */ + offsetX: 0, + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Saturation.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Vibrance filter class - * @class fabric.Image.filters.Vibrance - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Vibrance#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Vibrance({ - * vibrance: 1 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Vibrance = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Vibrance.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Vibrance', - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform float uVibrance;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'float max = max(color.r, max(color.g, color.b));\n' + - 'float avg = (color.r + color.g + color.b) / 3.0;\n' + - 'float amt = (abs(max - avg) * 2.0) * uVibrance;\n' + - 'color.r += max != color.r ? (max - color.r) * amt : 0.00;\n' + - 'color.g += max != color.g ? (max - color.g) * amt : 0.00;\n' + - 'color.b += max != color.b ? (max - color.b) * amt : 0.00;\n' + - 'gl_FragColor = color;\n' + - '}', - /** - * Vibrance value, from -1 to 1. - * Increases/decreases the saturation of more muted colors with less effect on saturated colors. - * A value of 0 has no effect. - * - * @param {Number} vibrance - * @default - */ - vibrance: 0, - mainParameter: 'vibrance', - /** - * Constructor - * @memberOf fabric.Image.filters.Vibrance.prototype - * @param {Object} [options] Options object - * @param {Number} [options.vibrance=0] Vibrance value for the image (between -1 and 1) - */ - /** - * Apply the Vibrance operation to a Uint8ClampedArray representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. - */ - applyTo2d: function (options) { - if (this.vibrance === 0) { - return; - } - var imageData = options.imageData, data = imageData.data, len = data.length, adjust = -this.vibrance, i, max, avg, amt; - for (i = 0; i < len; i += 4) { - max = Math.max(data[i], data[i + 1], data[i + 2]); - avg = (data[i] + data[i + 1] + data[i + 2]) / 3; - amt = ((Math.abs(max - avg) * 2) / 255) * adjust; - data[i] += max !== data[i] ? (max - data[i]) * amt : 0; - data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * amt : 0; - data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * amt : 0; - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uVibrance: gl.getUniformLocation(program, 'uVibrance'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform1f(uniformLocations.uVibrance, -this.vibrance); - }, - }); + * Pattern vertical offset from object's left/top corner + * @type Number + * @default + */ + offsetY: 0, + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Vibrance.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Blur filter class - * @class fabric.Image.filters.Blur - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Blur#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Blur({ - * blur: 0.5 - * }); - * object.filters.push(filter); - * object.applyFilters(); - * canvas.renderAll(); - */ - filters.Blur = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Blur.prototype */ { - type: 'Blur', - /* - 'gl_FragColor = vec4(0.0);', - 'gl_FragColor += texture2D(texture, vTexCoord + -7 * uDelta)*0.0044299121055113265;', - 'gl_FragColor += texture2D(texture, vTexCoord + -6 * uDelta)*0.00895781211794;', - 'gl_FragColor += texture2D(texture, vTexCoord + -5 * uDelta)*0.0215963866053;', - 'gl_FragColor += texture2D(texture, vTexCoord + -4 * uDelta)*0.0443683338718;', - 'gl_FragColor += texture2D(texture, vTexCoord + -3 * uDelta)*0.0776744219933;', - 'gl_FragColor += texture2D(texture, vTexCoord + -2 * uDelta)*0.115876621105;', - 'gl_FragColor += texture2D(texture, vTexCoord + -1 * uDelta)*0.147308056121;', - 'gl_FragColor += texture2D(texture, vTexCoord )*0.159576912161;', - 'gl_FragColor += texture2D(texture, vTexCoord + 1 * uDelta)*0.147308056121;', - 'gl_FragColor += texture2D(texture, vTexCoord + 2 * uDelta)*0.115876621105;', - 'gl_FragColor += texture2D(texture, vTexCoord + 3 * uDelta)*0.0776744219933;', - 'gl_FragColor += texture2D(texture, vTexCoord + 4 * uDelta)*0.0443683338718;', - 'gl_FragColor += texture2D(texture, vTexCoord + 5 * uDelta)*0.0215963866053;', - 'gl_FragColor += texture2D(texture, vTexCoord + 6 * uDelta)*0.00895781211794;', - 'gl_FragColor += texture2D(texture, vTexCoord + 7 * uDelta)*0.0044299121055113265;', - */ - /* eslint-disable max-len */ - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec2 uDelta;\n' + - 'varying vec2 vTexCoord;\n' + - 'const float nSamples = 15.0;\n' + - 'vec3 v3offset = vec3(12.9898, 78.233, 151.7182);\n' + - 'float random(vec3 scale) {\n' + - /* use the fragment position for a different seed per-pixel */ - 'return fract(sin(dot(gl_FragCoord.xyz, scale)) * 43758.5453);\n' + - '}\n' + - 'void main() {\n' + - 'vec4 color = vec4(0.0);\n' + - 'float total = 0.0;\n' + - 'float offset = random(v3offset);\n' + - 'for (float t = -nSamples; t <= nSamples; t++) {\n' + - 'float percent = (t + offset - 0.5) / nSamples;\n' + - 'float weight = 1.0 - abs(percent);\n' + - 'color += texture2D(uTexture, vTexCoord + uDelta * percent) * weight;\n' + - 'total += weight;\n' + - '}\n' + - 'gl_FragColor = color / total;\n' + - '}', - /* eslint-enable max-len */ - /** - * blur value, in percentage of image dimensions. - * specific to keep the image blur constant at different resolutions - * range between 0 and 1. - * @type Number - * @default - */ - blur: 0, - mainParameter: 'blur', - applyTo: function (options) { - if (options.webgl) { - // this aspectRatio is used to give the same blur to vertical and horizontal - this.aspectRatio = options.sourceWidth / options.sourceHeight; - options.passes++; - this._setupFrameBuffer(options); - this.horizontal = true; - this.applyToWebGL(options); - this._swapTextures(options); - this._setupFrameBuffer(options); - this.horizontal = false; - this.applyToWebGL(options); - this._swapTextures(options); - } - else { - this.applyTo2d(options); - } - }, - applyTo2d: function (options) { - // paint canvasEl with current image data. - //options.ctx.putImageData(options.imageData, 0, 0); - options.imageData = this.simpleBlur(options); - }, - simpleBlur: function (options) { - var resources = options.filterBackend.resources, canvas1, canvas2, width = options.imageData.width, height = options.imageData.height; - if (!resources.blurLayer1) { - resources.blurLayer1 = fabric.util.createCanvasElement(); - resources.blurLayer2 = fabric.util.createCanvasElement(); - } - canvas1 = resources.blurLayer1; - canvas2 = resources.blurLayer2; - if (canvas1.width !== width || canvas1.height !== height) { - canvas2.width = canvas1.width = width; - canvas2.height = canvas1.height = height; - } - var ctx1 = canvas1.getContext('2d'), ctx2 = canvas2.getContext('2d'), nSamples = 15, random, percent, j, i, blur = this.blur * 0.06 * 0.5; - // load first canvas - ctx1.putImageData(options.imageData, 0, 0); - ctx2.clearRect(0, 0, width, height); - for (i = -nSamples; i <= nSamples; i++) { - random = (Math.random() - 0.5) / 4; - percent = i / nSamples; - j = blur * percent * width + random; - ctx2.globalAlpha = 1 - Math.abs(percent); - ctx2.drawImage(canvas1, j, random); - ctx1.drawImage(canvas2, 0, 0); - ctx2.globalAlpha = 1; - ctx2.clearRect(0, 0, canvas2.width, canvas2.height); - } - for (i = -nSamples; i <= nSamples; i++) { - random = (Math.random() - 0.5) / 4; - percent = i / nSamples; - j = blur * percent * height + random; - ctx2.globalAlpha = 1 - Math.abs(percent); - ctx2.drawImage(canvas1, random, j); - ctx1.drawImage(canvas2, 0, 0); - ctx2.globalAlpha = 1; - ctx2.clearRect(0, 0, canvas2.width, canvas2.height); - } - options.ctx.drawImage(canvas1, 0, 0); - var newImageData = options.ctx.getImageData(0, 0, canvas1.width, canvas1.height); - ctx1.globalAlpha = 1; - ctx1.clearRect(0, 0, canvas1.width, canvas1.height); - return newImageData; - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - delta: gl.getUniformLocation(program, 'uDelta'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - var delta = this.chooseRightDelta(); - gl.uniform2fv(uniformLocations.delta, delta); - }, - /** - * choose right value of image percentage to blur with - * @returns {Array} a numeric array with delta values - */ - chooseRightDelta: function () { - var blurScale = 1, delta = [0, 0], blur; - if (this.horizontal) { - if (this.aspectRatio > 1) { - // image is wide, i want to shrink radius horizontal - blurScale = 1 / this.aspectRatio; - } - } - else { - if (this.aspectRatio < 1) { - // image is tall, i want to shrink radius vertical - blurScale = this.aspectRatio; - } - } - blur = blurScale * this.blur * 0.12; - if (this.horizontal) { - delta[0] = blur; - } - else { - delta[1] = blur; - } - return delta; - }, - }); + * crossOrigin value (one of "", "anonymous", "use-credentials") + * @see https://developer.mozilla.org/en-US/docs/HTML/CORS_settings_attributes + * @type String + * @default + */ + crossOrigin: '', + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - filters.Blur.fromObject = fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * Gamma filter class - * @class fabric.Image.filters.Gamma - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.Gamma#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.Gamma({ - * gamma: [1, 0.5, 2.1] - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.Gamma = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Gamma.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'Gamma', - fragmentSource: 'precision highp float;\n' + - 'uniform sampler2D uTexture;\n' + - 'uniform vec3 uGamma;\n' + - 'varying vec2 vTexCoord;\n' + - 'void main() {\n' + - 'vec4 color = texture2D(uTexture, vTexCoord);\n' + - 'vec3 correction = (1.0 / uGamma);\n' + - 'color.r = pow(color.r, correction.r);\n' + - 'color.g = pow(color.g, correction.g);\n' + - 'color.b = pow(color.b, correction.b);\n' + - 'gl_FragColor = color;\n' + - 'gl_FragColor.rgb *= color.a;\n' + - '}', - /** - * Gamma array value, from 0.01 to 2.2. - * @param {Array} gamma - * @default - */ - gamma: [1, 1, 1], - /** - * Describe the property that is the filter parameter - * @param {String} m - * @default - */ - mainParameter: 'gamma', - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function (options) { - this.gamma = [1, 1, 1]; - filters.BaseFilter.prototype.initialize.call(this, options); - }, - /** - * Apply the Gamma operation to a Uint8Array representing the pixels of an image. - * - * @param {Object} options - * @param {ImageData} options.imageData The Uint8Array to be filtered. - */ - applyTo2d: function (options) { - var imageData = options.imageData, data = imageData.data, gamma = this.gamma, len = data.length, rInv = 1 / gamma[0], gInv = 1 / gamma[1], bInv = 1 / gamma[2], i; - if (!this.rVals) { - // eslint-disable-next-line - this.rVals = new Uint8Array(256); - // eslint-disable-next-line - this.gVals = new Uint8Array(256); - // eslint-disable-next-line - this.bVals = new Uint8Array(256); - } - // This is an optimization - pre-compute a look-up table for each color channel - // instead of performing these pow calls for each pixel in the image. - for (i = 0, len = 256; i < len; i++) { - this.rVals[i] = Math.pow(i / 255, rInv) * 255; - this.gVals[i] = Math.pow(i / 255, gInv) * 255; - this.bVals[i] = Math.pow(i / 255, bInv) * 255; - } - for (i = 0, len = data.length; i < len; i += 4) { - data[i] = this.rVals[data[i]]; - data[i + 1] = this.gVals[data[i + 1]]; - data[i + 2] = this.bVals[data[i + 2]]; - } - }, - /** - * Return WebGL uniform locations for this filter's shader. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {WebGLShaderProgram} program This filter's compiled shader program. - */ - getUniformLocations: function (gl, program) { - return { - uGamma: gl.getUniformLocation(program, 'uGamma'), - }; - }, - /** - * Send data from this filter to its shader program's uniforms. - * - * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. - * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects - */ - sendUniformData: function (gl, uniformLocations) { - gl.uniform3fv(uniformLocations.uGamma, this.gamma); - }, - }); + * transform matrix to change the pattern, imported from svgs. + * @type Array + * @default + */ + patternTransform: null, + /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.Gamma.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * A container class that knows how to apply a sequence of filters to an input image. - */ - filters.Composed = createClass(filters.BaseFilter, - /** @lends fabric.Image.filters.Composed.prototype */ { - type: 'Composed', - /** - * A non sparse array of filters to apply - */ - subFilters: [], - /** - * Constructor - * @param {Object} [options] Options object - */ - initialize: function (options) { - this.callSuper('initialize', options); - // create a new array instead mutating the prototype with push - this.subFilters = this.subFilters.slice(0); - }, - /** - * Apply this container's filters to the input image provided. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be applied. - */ - applyTo: function (options) { - options.passes += this.subFilters.length - 1; - this.subFilters.forEach(function (filter) { - filter.applyTo(options); - }); - }, - /** - * Serialize this filter into JSON. - * - * @returns {Object} A JSON representation of this filter. - */ - toObject: function () { - return fabric.util.object.extend(this.callSuper('toObject'), { - subFilters: this.subFilters.map(function (filter) { - return filter.toObject(); - }), - }); - }, - isNeutralState: function () { - return !this.subFilters.some(function (filter) { - return !filter.isNeutralState(); - }); - }, - }); + * Constructor + * @param {Object} [options] Options object + * @param {Function} [callback] function to invoke after callback init. + * @return {fabric.Pattern} thisArg + */ + initialize: function(options, callback) { + options || (options = { }); + + this.id = fabric.Object.__uid++; + this.setOptions(options); + if (!options.source || (options.source && typeof options.source !== 'string')) { + callback && callback(this); + return; + } + else { + // img src string + var _this = this; + this.source = fabric.util.createImage(); + fabric.util.loadImage(options.source, function(img, isError) { + _this.source = img; + callback && callback(_this, isError); + }, null, this.crossOrigin); + } + }, + /** - * Deserialize a JSON definition of a ComposedFilter into a concrete instance. - * @static - * @param {oject} object Object to create an instance from - * @param {object} [options] - * @param {AbortSignal} [options.signal] handle aborting `BlendImage` filter loading, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal - * @returns {Promise} - */ - fabric.Image.filters.Composed.fromObject = function (object, options) { - var filters = object.subFilters || []; - return Promise.all(filters.map(function (filter) { - return fabric.Image.filters[filter.type].fromObject(filter, options); - })).then(function (enlivedFilters) { - return new fabric.Image.filters.Composed({ subFilters: enlivedFilters }); - }); - }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), filters = fabric.Image.filters, createClass = fabric.util.createClass; - /** - * HueRotation filter class - * @class fabric.Image.filters.HueRotation - * @memberOf fabric.Image.filters - * @extends fabric.Image.filters.BaseFilter - * @see {@link fabric.Image.filters.HueRotation#initialize} for constructor definition - * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} - * @example - * var filter = new fabric.Image.filters.HueRotation({ - * rotation: -0.5 - * }); - * object.filters.push(filter); - * object.applyFilters(); - */ - filters.HueRotation = createClass(filters.ColorMatrix, - /** @lends fabric.Image.filters.HueRotation.prototype */ { - /** - * Filter type - * @param {String} type - * @default - */ - type: 'HueRotation', - /** - * HueRotation value, from -1 to 1. - * the unit is radians - * @param {Number} myParameter - * @default - */ - rotation: 0, - /** - * Describe the property that is the filter parameter - * @param {String} m - * @default - */ - mainParameter: 'rotation', - calculateMatrix: function () { - var rad = this.rotation * Math.PI, cos = fabric.util.cos(rad), sin = fabric.util.sin(rad), aThird = 1 / 3, aThirdSqtSin = Math.sqrt(aThird) * sin, OneMinusCos = 1 - cos; - this.matrix = [ - 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, - ]; - this.matrix[0] = cos + OneMinusCos / 3; - this.matrix[1] = aThird * OneMinusCos - aThirdSqtSin; - this.matrix[2] = aThird * OneMinusCos + aThirdSqtSin; - this.matrix[5] = aThird * OneMinusCos + aThirdSqtSin; - this.matrix[6] = cos + aThird * OneMinusCos; - this.matrix[7] = aThird * OneMinusCos - aThirdSqtSin; - this.matrix[10] = aThird * OneMinusCos - aThirdSqtSin; - this.matrix[11] = aThird * OneMinusCos + aThirdSqtSin; - this.matrix[12] = cos + aThird * OneMinusCos; - }, - /** - * HueRotation isNeutralState implementation - * Used only in image applyFilters to discard filters that will not have an effect - * on the image - * @param {Object} options - **/ - isNeutralState: function (options) { - this.calculateMatrix(); - return filters.BaseFilter.prototype.isNeutralState.call(this, options); - }, - /** - * Apply this filter to the input image data provided. - * - * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. - * - * @param {Object} options - * @param {Number} options.passes The number of filters remaining to be executed - * @param {Boolean} options.webgl Whether to use webgl to render the filter. - * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. - * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. - * @param {WebGLRenderingContext} options.context The GL context used for rendering. - * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. - */ - applyTo: function (options) { - this.calculateMatrix(); - filters.BaseFilter.prototype.applyTo.call(this, options); - }, - }); + * Returns object representation of a pattern + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of a pattern instance + */ + toObject: function(propertiesToInclude) { + var NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS, + source, object; + + // element + if (typeof this.source.src === 'string') { + source = this.source.src; + } + // element + else if (typeof this.source === 'object' && this.source.toDataURL) { + source = this.source.toDataURL(); + } + + object = { + type: 'pattern', + source: source, + repeat: this.repeat, + crossOrigin: this.crossOrigin, + offsetX: toFixed(this.offsetX, NUM_FRACTION_DIGITS), + offsetY: toFixed(this.offsetY, NUM_FRACTION_DIGITS), + patternTransform: this.patternTransform ? this.patternTransform.concat() : null + }; + fabric.util.populateWithProperties(this, object, propertiesToInclude); + + return object; + }, + + /* _TO_SVG_START_ */ /** - * Create filter instance from an object representation - * @static - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Image.filters.HueRotation.fromObject = - fabric.Image.filters.BaseFilter.fromObject; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}); - var additionalProps = ('fontFamily fontWeight fontSize text underline overline linethrough' + - ' textAlign fontStyle lineHeight textBackgroundColor charSpacing styles' + - ' direction path pathStartOffset pathSide pathAlign').split(' '); - /** - * Text class - * @class fabric.Text - * @extends fabric.Object - * @return {fabric.Text} thisArg - * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#text} - * @see {@link fabric.Text#initialize} for constructor definition - */ - fabric.Text = fabric.util.createClass(fabric.Object, - /** @lends fabric.Text.prototype */ { - /** - * Properties which when set cause object to change dimensions - * @type Array - * @private - */ - _dimensionAffectingProps: [ - 'fontSize', - 'fontWeight', - 'fontFamily', - 'fontStyle', - 'lineHeight', - 'text', - 'charSpacing', - 'textAlign', - 'styles', - 'path', - 'pathStartOffset', - 'pathSide', - 'pathAlign', - ], - /** - * @private - */ - _reNewline: /\r?\n/, - /** - * Use this regular expression to filter for whitespaces that is not a new line. - * Mostly used when text is 'justify' aligned. - * @private - */ - _reSpacesAndTabs: /[ \t\r]/g, - /** - * Use this regular expression to filter for whitespace that is not a new line. - * Mostly used when text is 'justify' aligned. - * @private - */ - _reSpaceAndTab: /[ \t\r]/, - /** - * Use this regular expression to filter consecutive groups of non spaces. - * Mostly used when text is 'justify' aligned. - * @private - */ - _reWords: /\S+/g, - /** - * Type of an object - * @type String - * @default - */ - type: 'text', - /** - * Font size (in pixels) - * @type Number - * @default - */ - fontSize: 40, - /** - * Font weight (e.g. bold, normal, 400, 600, 800) - * @type {(Number|String)} - * @default - */ - fontWeight: 'normal', - /** - * Font family - * @type String - * @default - */ - fontFamily: 'Times New Roman', - /** - * Text decoration underline. - * @type Boolean - * @default - */ - underline: false, - /** - * Text decoration overline. - * @type Boolean - * @default - */ - overline: false, - /** - * Text decoration linethrough. - * @type Boolean - * @default - */ - linethrough: false, - /** - * Text alignment. Possible values: "left", "center", "right", "justify", - * "justify-left", "justify-center" or "justify-right". - * @type String - * @default - */ - textAlign: 'left', - /** - * Font style . Possible values: "", "normal", "italic" or "oblique". - * @type String - * @default - */ - fontStyle: 'normal', - /** - * Line height - * @type Number - * @default - */ - lineHeight: 1.16, - /** - * Superscript schema object (minimum overlap) - * @type {Object} - * @default - */ - superscript: { - size: 0.6, - baseline: -0.35, // baseline-shift factor (upwards) - }, - /** - * Subscript schema object (minimum overlap) - * @type {Object} - * @default - */ - subscript: { - size: 0.6, - baseline: 0.11, // baseline-shift factor (downwards) - }, - /** - * Background color of text lines - * @type String - * @default - */ - textBackgroundColor: '', - /** - * List of properties to consider when checking if - * state of an object is changed ({@link fabric.Object#hasStateChanged}) - * as well as for history (undo/redo) purposes - * @type Array - */ - stateProperties: fabric.Object.prototype.stateProperties.concat(additionalProps), - /** - * List of properties to consider when checking if cache needs refresh - * @type Array - */ - cacheProperties: fabric.Object.prototype.cacheProperties.concat(additionalProps), - /** - * When defined, an object is rendered via stroke and this property specifies its color. - * Backwards incompatibility note: This property was named "strokeStyle" until v1.1.6 - * @type String - * @default - */ - stroke: null, - /** - * Shadow object representing shadow of this shape. - * Backwards incompatibility note: This property was named "textShadow" (String) until v1.2.11 - * @type fabric.Shadow - * @default - */ - shadow: null, - /** - * fabric.Path that the text should follow. - * since 4.6.0 the path will be drawn automatically. - * if you want to make the path visible, give it a stroke and strokeWidth or fill value - * if you want it to be hidden, assign visible = false to the path. - * This feature is in BETA, and SVG import/export is not yet supported. - * @type fabric.Path - * @example - * var textPath = new fabric.Text('Text on a path', { - * top: 150, - * left: 150, - * textAlign: 'center', - * charSpacing: -50, - * path: new fabric.Path('M 0 0 C 50 -100 150 -100 200 0', { - * strokeWidth: 1, - * visible: false - * }), - * pathSide: 'left', - * pathStartOffset: 0 - * }); - * @default - */ - path: null, - /** - * Offset amount for text path starting position - * Only used when text has a path - * @type Number - * @default - */ - pathStartOffset: 0, - /** - * Which side of the path the text should be drawn on. - * Only used when text has a path - * @type {String} 'left|right' - * @default - */ - pathSide: 'left', - /** - * How text is aligned to the path. This property determines - * the perpendicular position of each character relative to the path. - * (one of "baseline", "center", "ascender", "descender") - * This feature is in BETA, and its behavior may change - * @type String - * @default - */ - pathAlign: 'baseline', - /** - * @private - */ - _fontSizeFraction: 0.222, - /** - * @private - */ - offsets: { - underline: 0.1, - linethrough: -0.315, - overline: -0.88, - }, - /** - * Text Line proportion to font Size (in pixels) - * @type Number - * @default - */ - _fontSizeMult: 1.13, - /** - * additional space between characters - * expressed in thousands of em unit - * @type Number - * @default - */ - charSpacing: 0, - /** - * Object containing character styles - top-level properties -> line numbers, - * 2nd-level properties - character numbers - * @type Object - * @default - */ - styles: null, - /** - * Reference to a context to measure text char or couple of chars - * the cacheContext of the canvas will be used or a freshly created one if the object is not on canvas - * once created it will be referenced on fabric._measuringContext to avoid creating a canvas for every - * text object created. - * @type {CanvasRenderingContext2D} - * @default - */ - _measuringContext: null, - /** - * Baseline shift, styles only, keep at 0 for the main text object - * @type {Number} - * @default - */ - deltaY: 0, - /** - * WARNING: EXPERIMENTAL. NOT SUPPORTED YET - * determine the direction of the text. - * This has to be set manually together with textAlign and originX for proper - * experience. - * some interesting link for the future - * https://www.w3.org/International/questions/qa-bidi-unicode-controls - * @since 4.5.0 - * @type {String} 'ltr|rtl' - * @default - */ - direction: 'ltr', - /** - * Array of properties that define a style unit (of 'styles'). - * @type {Array} - * @default - */ - _styleProperties: [ - 'stroke', - 'strokeWidth', - 'fill', - 'fontFamily', - 'fontSize', - 'fontWeight', - 'fontStyle', - 'underline', - 'overline', - 'linethrough', - 'deltaY', - 'textBackgroundColor', - ], - /** - * contains characters bounding boxes - */ - __charBounds: [], - /** - * use this size when measuring text. To avoid IE11 rounding errors - * @type {Number} - * @default - * @readonly - * @private - */ - CACHE_FONT_SIZE: 400, - /** - * contains the min text width to avoid getting 0 - * @type {Number} - * @default - */ - MIN_TEXT_WIDTH: 2, - /** - * Constructor - * @param {String} text Text string - * @param {Object} [options] Options object - * @return {fabric.Text} thisArg - */ - initialize: function (text, options) { - this.styles = options ? options.styles || {} : {}; - this.text = text; - this.__skipDimension = true; - this.callSuper('initialize', options); - if (this.path) { - this.setPathInfo(); - } - this.__skipDimension = false; - this.initDimensions(); - this.setCoords(); - this.setupState({ propertySet: '_dimensionAffectingProps' }); - }, - /** - * If text has a path, it will add the extra information needed - * for path and text calculations - * @return {fabric.Text} thisArg - */ - setPathInfo: function () { - var path = this.path; - if (path) { - path.segmentsInfo = fabric.util.getPathSegmentsInfo(path.path); - } - }, - /** - * Return a context for measurement of text string. - * if created it gets stored for reuse - * this is for internal use, please do not use it - * @private - * @param {String} text Text string - * @param {Object} [options] Options object - * @return {fabric.Text} thisArg - */ - getMeasuringContext: function () { - // if we did not return we have to measure something. - if (!fabric._measuringContext) { - fabric._measuringContext = - (this.canvas && this.canvas.contextCache) || - fabric.util.createCanvasElement().getContext('2d'); - } - return fabric._measuringContext; - }, - /** - * @private - * Divides text into lines of text and lines of graphemes. - */ - _splitText: function () { - var newLines = this._splitTextIntoLines(this.text); - this.textLines = newLines.lines; - this._textLines = newLines.graphemeLines; - this._unwrappedTextLines = newLines._unwrappedLines; - this._text = newLines.graphemeText; - return newLines; - }, - /** - * Initialize or update text dimensions. - * Updates this.width and this.height with the proper values. - * Does not return dimensions. - */ - initDimensions: function () { - if (this.__skipDimension) { - return; - } - this._splitText(); - this._clearCache(); - if (this.path) { - this.width = this.path.width; - this.height = this.path.height; - } - else { - this.width = - this.calcTextWidth() || this.cursorWidth || this.MIN_TEXT_WIDTH; - this.height = this.calcTextHeight(); - } - if (this.textAlign.indexOf('justify') !== -1) { - // once text is measured we need to make space fatter to make justified text. - this.enlargeSpaces(); - } - this.saveState({ propertySet: '_dimensionAffectingProps' }); - }, - /** - * Enlarge space boxes and shift the others - */ - enlargeSpaces: function () { - var diffSpace, currentLineWidth, numberOfSpaces, accumulatedSpace, line, charBound, spaces; - for (var i = 0, len = this._textLines.length; i < len; i++) { - if (this.textAlign !== 'justify' && - (i === len - 1 || this.isEndOfWrapping(i))) { - continue; - } - accumulatedSpace = 0; - line = this._textLines[i]; - currentLineWidth = this.getLineWidth(i); - if (currentLineWidth < this.width && - (spaces = this.textLines[i].match(this._reSpacesAndTabs))) { - numberOfSpaces = spaces.length; - diffSpace = (this.width - currentLineWidth) / numberOfSpaces; - for (var j = 0, jlen = line.length; j <= jlen; j++) { - charBound = this.__charBounds[i][j]; - if (this._reSpaceAndTab.test(line[j])) { - charBound.width += diffSpace; - charBound.kernedWidth += diffSpace; - charBound.left += accumulatedSpace; - accumulatedSpace += diffSpace; - } - else { - charBound.left += accumulatedSpace; - } - } - } - } - }, - /** - * Detect if the text line is ended with an hard break - * text and itext do not have wrapping, return false - * @return {Boolean} - */ - isEndOfWrapping: function (lineIndex) { - return lineIndex === this._textLines.length - 1; - }, - /** - * Detect if a line has a linebreak and so we need to account for it when moving - * and counting style. - * It return always for text and Itext. - * @return Number - */ - missingNewlineOffset: function () { - return 1; - }, - /** - * Returns string representation of an instance - * @return {String} String representation of text object - */ - toString: function () { - return ('#'); - }, - /** - * Return the dimension and the zoom level needed to create a cache canvas - * big enough to host the object to be cached. - * @private - * @param {Object} dim.x width of object to be cached - * @param {Object} dim.y height of object to be cached - * @return {Object}.width width of canvas - * @return {Object}.height height of canvas - * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache - * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache - */ - _getCacheCanvasDimensions: function () { - var dims = this.callSuper('_getCacheCanvasDimensions'); - var fontSize = this.fontSize; - dims.width += fontSize * dims.zoomX; - dims.height += fontSize * dims.zoomY; - return dims; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function (ctx) { - var path = this.path; - path && !path.isNotVisible() && path._render(ctx); - this._setTextStyles(ctx); - this._renderTextLinesBackground(ctx); - this._renderTextDecoration(ctx, 'underline'); - this._renderText(ctx); - this._renderTextDecoration(ctx, 'overline'); - this._renderTextDecoration(ctx, 'linethrough'); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderText: function (ctx) { - if (this.paintFirst === 'stroke') { - this._renderTextStroke(ctx); - this._renderTextFill(ctx); - } - else { - this._renderTextFill(ctx); - this._renderTextStroke(ctx); - } - }, - /** - * Set the font parameter of the context with the object properties or with charStyle - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Object} [charStyle] object with font style properties - * @param {String} [charStyle.fontFamily] Font Family - * @param {Number} [charStyle.fontSize] Font size in pixels. ( without px suffix ) - * @param {String} [charStyle.fontWeight] Font weight - * @param {String} [charStyle.fontStyle] Font style (italic|normal) - */ - _setTextStyles: function (ctx, charStyle, forMeasuring) { - ctx.textBaseline = 'alphabetical'; - if (this.path) { - switch (this.pathAlign) { - case 'center': - ctx.textBaseline = 'middle'; - break; - case 'ascender': - ctx.textBaseline = 'top'; - break; - case 'descender': - ctx.textBaseline = 'bottom'; - break; - } - } - ctx.font = this._getFontDeclaration(charStyle, forMeasuring); - }, - /** - * calculate and return the text Width measuring each line. - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @return {Number} Maximum width of fabric.Text object - */ - calcTextWidth: function () { - var maxWidth = this.getLineWidth(0); - for (var i = 1, len = this._textLines.length; i < len; i++) { - var currentLineWidth = this.getLineWidth(i); - if (currentLineWidth > maxWidth) { - maxWidth = currentLineWidth; - } - } - return maxWidth; - }, - /** - * @private - * @param {String} method Method name ("fillText" or "strokeText") - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {String} line Text to render - * @param {Number} left Left position of text - * @param {Number} top Top position of text - * @param {Number} lineIndex Index of a line in a text - */ - _renderTextLine: function (method, ctx, line, left, top, lineIndex) { - this._renderChars(method, ctx, line, left, top, lineIndex); - }, - /** - * Renders the text background for lines, taking care of style - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderTextLinesBackground: function (ctx) { - if (!this.textBackgroundColor && - !this.styleHas('textBackgroundColor')) { - return; - } - var heightOfLine, lineLeftOffset, originalFill = ctx.fillStyle, line, lastColor, leftOffset = this._getLeftOffset(), lineTopOffset = this._getTopOffset(), boxStart = 0, boxWidth = 0, charBox, currentColor, path = this.path, drawStart; - for (var i = 0, len = this._textLines.length; i < len; i++) { - heightOfLine = this.getHeightOfLine(i); - if (!this.textBackgroundColor && - !this.styleHas('textBackgroundColor', i)) { - lineTopOffset += heightOfLine; - continue; - } - line = this._textLines[i]; - lineLeftOffset = this._getLineLeftOffset(i); - boxWidth = 0; - boxStart = 0; - lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor'); - for (var j = 0, jlen = line.length; j < jlen; j++) { - charBox = this.__charBounds[i][j]; - currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor'); - if (path) { - ctx.save(); - ctx.translate(charBox.renderLeft, charBox.renderTop); - ctx.rotate(charBox.angle); - ctx.fillStyle = currentColor; - currentColor && - ctx.fillRect(-charBox.width / 2, (-heightOfLine / this.lineHeight) * - (1 - this._fontSizeFraction), charBox.width, heightOfLine / this.lineHeight); - ctx.restore(); - } - else if (currentColor !== lastColor) { - drawStart = leftOffset + lineLeftOffset + boxStart; - if (this.direction === 'rtl') { - drawStart = this.width - drawStart - boxWidth; - } - ctx.fillStyle = lastColor; - lastColor && - ctx.fillRect(drawStart, lineTopOffset, boxWidth, heightOfLine / this.lineHeight); - boxStart = charBox.left; - boxWidth = charBox.width; - lastColor = currentColor; - } - else { - boxWidth += charBox.kernedWidth; - } - } - if (currentColor && !path) { - drawStart = leftOffset + lineLeftOffset + boxStart; - if (this.direction === 'rtl') { - drawStart = this.width - drawStart - boxWidth; - } - ctx.fillStyle = currentColor; - ctx.fillRect(drawStart, lineTopOffset, boxWidth, heightOfLine / this.lineHeight); - } - lineTopOffset += heightOfLine; - } - ctx.fillStyle = originalFill; - // if there is text background color no - // other shadows should be casted - this._removeShadow(ctx); - }, - /** - * measure and return the width of a single character. - * possibly overridden to accommodate different measure logic or - * to hook some external lib for character measurement - * @private - * @param {String} _char, char to be measured - * @param {Object} charStyle style of char to be measured - * @param {String} [previousChar] previous char - * @param {Object} [prevCharStyle] style of previous char - */ - _measureChar: function (_char, charStyle, previousChar, prevCharStyle) { - // first i try to return from cache - var fontCache = cache.getFontCache(charStyle), fontDeclaration = this._getFontDeclaration(charStyle), previousFontDeclaration = this._getFontDeclaration(prevCharStyle), couple = previousChar + _char, stylesAreEqual = fontDeclaration === previousFontDeclaration, width, coupleWidth, previousWidth, fontMultiplier = charStyle.fontSize / this.CACHE_FONT_SIZE, kernedWidth; - if (previousChar && fontCache[previousChar] !== undefined) { - previousWidth = fontCache[previousChar]; - } - if (fontCache[_char] !== undefined) { - kernedWidth = width = fontCache[_char]; - } - if (stylesAreEqual && fontCache[couple] !== undefined) { - coupleWidth = fontCache[couple]; - kernedWidth = coupleWidth - previousWidth; - } - if (width === undefined || - previousWidth === undefined || - coupleWidth === undefined) { - var ctx = this.getMeasuringContext(); - // send a TRUE to specify measuring font size CACHE_FONT_SIZE - this._setTextStyles(ctx, charStyle, true); - } - if (width === undefined) { - kernedWidth = width = ctx.measureText(_char).width; - fontCache[_char] = width; - } - if (previousWidth === undefined && stylesAreEqual && previousChar) { - previousWidth = ctx.measureText(previousChar).width; - fontCache[previousChar] = previousWidth; - } - if (stylesAreEqual && coupleWidth === undefined) { - // we can measure the kerning couple and subtract the width of the previous character - coupleWidth = ctx.measureText(couple).width; - fontCache[couple] = coupleWidth; - kernedWidth = coupleWidth - previousWidth; - } - return { - width: width * fontMultiplier, - kernedWidth: kernedWidth * fontMultiplier, - }; - }, - /** - * Computes height of character at given position - * @param {Number} line the line index number - * @param {Number} _char the character index number - * @return {Number} fontSize of the character - */ - getHeightOfChar: function (line, _char) { - return this.getValueOfPropertyAt(line, _char, 'fontSize'); - }, - /** - * measure a text line measuring all characters. - * @param {Number} lineIndex line number - * @return {Number} Line width - */ - measureLine: function (lineIndex) { - var lineInfo = this._measureLine(lineIndex); - if (this.charSpacing !== 0) { - lineInfo.width -= this._getWidthOfCharSpacing(); - } - if (lineInfo.width < 0) { - lineInfo.width = 0; - } - return lineInfo; - }, - /** - * measure every grapheme of a line, populating __charBounds - * @param {Number} lineIndex - * @return {Object} object.width total width of characters - * @return {Object} object.widthOfSpaces length of chars that match this._reSpacesAndTabs - */ - _measureLine: function (lineIndex) { - var width = 0, i, grapheme, line = this._textLines[lineIndex], prevGrapheme, graphemeInfo, numOfSpaces = 0, lineBounds = new Array(line.length), positionInPath = 0, startingPoint, totalPathLength, path = this.path, reverse = this.pathSide === 'right'; - this.__charBounds[lineIndex] = lineBounds; - for (i = 0; i < line.length; i++) { - grapheme = line[i]; - graphemeInfo = this._getGraphemeBox(grapheme, lineIndex, i, prevGrapheme); - lineBounds[i] = graphemeInfo; - width += graphemeInfo.kernedWidth; - prevGrapheme = grapheme; - } - // this latest bound box represent the last character of the line - // to simplify cursor handling in interactive mode. - lineBounds[i] = { - left: graphemeInfo ? graphemeInfo.left + graphemeInfo.width : 0, - width: 0, - kernedWidth: 0, - height: this.fontSize, - }; - if (path) { - totalPathLength = - path.segmentsInfo[path.segmentsInfo.length - 1].length; - startingPoint = fabric.util.getPointOnPath(path.path, 0, path.segmentsInfo); - startingPoint.x += path.pathOffset.x; - startingPoint.y += path.pathOffset.y; - switch (this.textAlign) { - case 'left': - positionInPath = reverse ? totalPathLength - width : 0; - break; - case 'center': - positionInPath = (totalPathLength - width) / 2; - break; - case 'right': - positionInPath = reverse ? 0 : totalPathLength - width; - break; - //todo - add support for justify - } - positionInPath += this.pathStartOffset * (reverse ? -1 : 1); - for (i = reverse ? line.length - 1 : 0; reverse ? i >= 0 : i < line.length; reverse ? i-- : i++) { - graphemeInfo = lineBounds[i]; - if (positionInPath > totalPathLength) { - positionInPath %= totalPathLength; - } - else if (positionInPath < 0) { - positionInPath += totalPathLength; - } - // it would probably much faster to send all the grapheme position for a line - // and calculate path position/angle at once. - this._setGraphemeOnPath(positionInPath, graphemeInfo, startingPoint); - positionInPath += graphemeInfo.kernedWidth; - } - } - return { width: width, numOfSpaces: numOfSpaces }; - }, - /** - * Calculate the angle and the left,top position of the char that follow a path. - * It appends it to graphemeInfo to be reused later at rendering - * @private - * @param {Number} positionInPath to be measured - * @param {Object} graphemeInfo current grapheme box information - * @param {Object} startingPoint position of the point - */ - _setGraphemeOnPath: function (positionInPath, graphemeInfo, startingPoint) { - var centerPosition = positionInPath + graphemeInfo.kernedWidth / 2, path = this.path; - // we are at currentPositionOnPath. we want to know what point on the path is. - var info = fabric.util.getPointOnPath(path.path, centerPosition, path.segmentsInfo); - graphemeInfo.renderLeft = info.x - startingPoint.x; - graphemeInfo.renderTop = info.y - startingPoint.y; - graphemeInfo.angle = - info.angle + (this.pathSide === 'right' ? Math.PI : 0); - }, - /** - * Measure and return the info of a single grapheme. - * needs the the info of previous graphemes already filled - * Override to customize measuring - * - * @typedef {object} GraphemeBBox - * @property {number} width - * @property {number} height - * @property {number} kernedWidth - * @property {number} left - * @property {number} deltaY - * - * @param {String} grapheme to be measured - * @param {Number} lineIndex index of the line where the char is - * @param {Number} charIndex position in the line - * @param {String} [prevGrapheme] character preceding the one to be measured - * @returns {GraphemeBBox} grapheme bbox - */ - _getGraphemeBox: function (grapheme, lineIndex, charIndex, prevGrapheme, skipLeft) { - var style = this.getCompleteStyleDeclaration(lineIndex, charIndex), prevStyle = prevGrapheme - ? this.getCompleteStyleDeclaration(lineIndex, charIndex - 1) - : {}, info = this._measureChar(grapheme, style, prevGrapheme, prevStyle), kernedWidth = info.kernedWidth, width = info.width, charSpacing; - if (this.charSpacing !== 0) { - charSpacing = this._getWidthOfCharSpacing(); - width += charSpacing; - kernedWidth += charSpacing; - } - var box = { - width: width, - left: 0, - height: style.fontSize, - kernedWidth: kernedWidth, - deltaY: style.deltaY, - }; - if (charIndex > 0 && !skipLeft) { - var previousBox = this.__charBounds[lineIndex][charIndex - 1]; - box.left = - previousBox.left + - previousBox.width + - info.kernedWidth - - info.width; - } - return box; - }, - /** - * Calculate height of line at 'lineIndex' - * @param {Number} lineIndex index of line to calculate - * @return {Number} - */ - getHeightOfLine: function (lineIndex) { - if (this.__lineHeights[lineIndex]) { - return this.__lineHeights[lineIndex]; - } - var line = this._textLines[lineIndex], - // char 0 is measured before the line cycle because it nneds to char - // emptylines - maxHeight = this.getHeightOfChar(lineIndex, 0); - for (var i = 1, len = line.length; i < len; i++) { - maxHeight = Math.max(this.getHeightOfChar(lineIndex, i), maxHeight); - } - return (this.__lineHeights[lineIndex] = - maxHeight * this.lineHeight * this._fontSizeMult); - }, - /** - * Calculate text box height - */ - calcTextHeight: function () { - var lineHeight, height = 0; - for (var i = 0, len = this._textLines.length; i < len; i++) { - lineHeight = this.getHeightOfLine(i); - height += i === len - 1 ? lineHeight / this.lineHeight : lineHeight; - } - return height; - }, - /** - * @private - * @return {Number} Left offset - */ - _getLeftOffset: function () { - return this.direction === 'ltr' ? -this.width / 2 : this.width / 2; - }, - /** - * @private - * @return {Number} Top offset - */ - _getTopOffset: function () { - return -this.height / 2; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {String} method Method name ("fillText" or "strokeText") - */ - _renderTextCommon: function (ctx, method) { - ctx.save(); - var lineHeights = 0, left = this._getLeftOffset(), top = this._getTopOffset(); - for (var i = 0, len = this._textLines.length; i < len; i++) { - var heightOfLine = this.getHeightOfLine(i), maxHeight = heightOfLine / this.lineHeight, leftOffset = this._getLineLeftOffset(i); - this._renderTextLine(method, ctx, this._textLines[i], left + leftOffset, top + lineHeights + maxHeight, i); - lineHeights += heightOfLine; - } - ctx.restore(); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderTextFill: function (ctx) { - if (!this.fill && !this.styleHas('fill')) { - return; - } - this._renderTextCommon(ctx, 'fillText'); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderTextStroke: function (ctx) { - if ((!this.stroke || this.strokeWidth === 0) && this.isEmptyStyles()) { - return; - } - if (this.shadow && !this.shadow.affectStroke) { - this._removeShadow(ctx); - } - ctx.save(); - this._setLineDash(ctx, this.strokeDashArray); - ctx.beginPath(); - this._renderTextCommon(ctx, 'strokeText'); - ctx.closePath(); - ctx.restore(); - }, - /** - * @private - * @param {String} method fillText or strokeText. - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Array} line Content of the line, splitted in an array by grapheme - * @param {Number} left - * @param {Number} top - * @param {Number} lineIndex - */ - _renderChars: function (method, ctx, line, left, top, lineIndex) { - // set proper line offset - var lineHeight = this.getHeightOfLine(lineIndex), isJustify = this.textAlign.indexOf('justify') !== -1, actualStyle, nextStyle, charsToRender = '', charBox, boxWidth = 0, timeToRender, path = this.path, shortCut = !isJustify && - this.charSpacing === 0 && - this.isEmptyStyles(lineIndex) && - !path, isLtr = this.direction === 'ltr', sign = this.direction === 'ltr' ? 1 : -1, - // this was changed in the PR #7674 - // currentDirection = ctx.canvas.getAttribute('dir'); - drawingLeft, currentDirection = ctx.direction; - ctx.save(); - if (currentDirection !== this.direction) { - ctx.canvas.setAttribute('dir', isLtr ? 'ltr' : 'rtl'); - ctx.direction = isLtr ? 'ltr' : 'rtl'; - ctx.textAlign = isLtr ? 'left' : 'right'; - } - top -= (lineHeight * this._fontSizeFraction) / this.lineHeight; - if (shortCut) { - // render all the line in one pass without checking - // drawingLeft = isLtr ? left : left - this.getLineWidth(lineIndex); - this._renderChar(method, ctx, lineIndex, 0, line.join(''), left, top, lineHeight); - ctx.restore(); - return; - } - for (var i = 0, len = line.length - 1; i <= len; i++) { - timeToRender = i === len || this.charSpacing || path; - charsToRender += line[i]; - charBox = this.__charBounds[lineIndex][i]; - if (boxWidth === 0) { - left += sign * (charBox.kernedWidth - charBox.width); - boxWidth += charBox.width; - } - else { - boxWidth += charBox.kernedWidth; - } - if (isJustify && !timeToRender) { - if (this._reSpaceAndTab.test(line[i])) { - timeToRender = true; - } - } - if (!timeToRender) { - // if we have charSpacing, we render char by char - actualStyle = - actualStyle || this.getCompleteStyleDeclaration(lineIndex, i); - nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1); - timeToRender = fabric.util.hasStyleChanged(actualStyle, nextStyle, false); - } - if (timeToRender) { - if (path) { - ctx.save(); - ctx.translate(charBox.renderLeft, charBox.renderTop); - ctx.rotate(charBox.angle); - this._renderChar(method, ctx, lineIndex, i, charsToRender, -boxWidth / 2, 0, lineHeight); - ctx.restore(); - } - else { - drawingLeft = left; - this._renderChar(method, ctx, lineIndex, i, charsToRender, drawingLeft, top, lineHeight); - } - charsToRender = ''; - actualStyle = nextStyle; - left += sign * boxWidth; - boxWidth = 0; - } - } - ctx.restore(); - }, - /** - * This function try to patch the missing gradientTransform on canvas gradients. - * transforming a context to transform the gradient, is going to transform the stroke too. - * we want to transform the gradient but not the stroke operation, so we create - * a transformed gradient on a pattern and then we use the pattern instead of the gradient. - * this method has drawbacks: is slow, is in low resolution, needs a patch for when the size - * is limited. - * @private - * @param {fabric.Gradient} filler a fabric gradient instance - * @return {CanvasPattern} a pattern to use as fill/stroke style - */ - _applyPatternGradientTransformText: function (filler) { - var pCanvas = fabric.util.createCanvasElement(), pCtx, - // TODO: verify compatibility with strokeUniform - width = this.width + this.strokeWidth, height = this.height + this.strokeWidth; - pCanvas.width = width; - pCanvas.height = height; - pCtx = pCanvas.getContext('2d'); - pCtx.beginPath(); - pCtx.moveTo(0, 0); - pCtx.lineTo(width, 0); - pCtx.lineTo(width, height); - pCtx.lineTo(0, height); - pCtx.closePath(); - pCtx.translate(width / 2, height / 2); - pCtx.fillStyle = filler.toLive(pCtx); - this._applyPatternGradientTransform(pCtx, filler); - pCtx.fill(); - return pCtx.createPattern(pCanvas, 'no-repeat'); - }, - handleFiller: function (ctx, property, filler) { - var offsetX, offsetY; - if (filler.toLive) { - if (filler.gradientUnits === 'percentage' || - filler.gradientTransform || - filler.patternTransform) { - // need to transform gradient in a pattern. - // this is a slow process. If you are hitting this codepath, and the object - // is not using caching, you should consider switching it on. - // we need a canvas as big as the current object caching canvas. - offsetX = -this.width / 2; - offsetY = -this.height / 2; - ctx.translate(offsetX, offsetY); - ctx[property] = this._applyPatternGradientTransformText(filler); - return { offsetX: offsetX, offsetY: offsetY }; - } - else { - // is a simple gradient or pattern - ctx[property] = filler.toLive(ctx, this); - return this._applyPatternGradientTransform(ctx, filler); - } - } - else { - // is a color - ctx[property] = filler; - } - return { offsetX: 0, offsetY: 0 }; - }, - _setStrokeStyles: function (ctx, decl) { - ctx.lineWidth = decl.strokeWidth; - ctx.lineCap = this.strokeLineCap; - ctx.lineDashOffset = this.strokeDashOffset; - ctx.lineJoin = this.strokeLineJoin; - ctx.miterLimit = this.strokeMiterLimit; - return this.handleFiller(ctx, 'strokeStyle', decl.stroke); - }, - _setFillStyles: function (ctx, decl) { - return this.handleFiller(ctx, 'fillStyle', decl.fill); - }, - /** - * @private - * @param {String} method - * @param {CanvasRenderingContext2D} ctx Context to render on - * @param {Number} lineIndex - * @param {Number} charIndex - * @param {String} _char - * @param {Number} left Left coordinate - * @param {Number} top Top coordinate - * @param {Number} lineHeight Height of the line - */ - _renderChar: function (method, ctx, lineIndex, charIndex, _char, left, top) { - var decl = this._getStyleDeclaration(lineIndex, charIndex), fullDecl = this.getCompleteStyleDeclaration(lineIndex, charIndex), shouldFill = method === 'fillText' && fullDecl.fill, shouldStroke = method === 'strokeText' && fullDecl.stroke && fullDecl.strokeWidth, fillOffsets, strokeOffsets; - if (!shouldStroke && !shouldFill) { - return; - } - ctx.save(); - shouldFill && (fillOffsets = this._setFillStyles(ctx, fullDecl)); - shouldStroke && (strokeOffsets = this._setStrokeStyles(ctx, fullDecl)); - ctx.font = this._getFontDeclaration(fullDecl); - if (decl && decl.textBackgroundColor) { - this._removeShadow(ctx); - } - if (decl && decl.deltaY) { - top += decl.deltaY; - } - shouldFill && - ctx.fillText(_char, left - fillOffsets.offsetX, top - fillOffsets.offsetY); - shouldStroke && - ctx.strokeText(_char, left - strokeOffsets.offsetX, top - strokeOffsets.offsetY); - ctx.restore(); - }, - /** - * Turns the character into a 'superior figure' (i.e. 'superscript') - * @param {Number} start selection start - * @param {Number} end selection end - * @returns {fabric.Text} thisArg - * @chainable - */ - setSuperscript: function (start, end) { - return this._setScript(start, end, this.superscript); - }, - /** - * Turns the character into an 'inferior figure' (i.e. 'subscript') - * @param {Number} start selection start - * @param {Number} end selection end - * @returns {fabric.Text} thisArg - * @chainable - */ - setSubscript: function (start, end) { - return this._setScript(start, end, this.subscript); - }, - /** - * Applies 'schema' at given position - * @private - * @param {Number} start selection start - * @param {Number} end selection end - * @param {Number} schema - * @returns {fabric.Text} thisArg - * @chainable - */ - _setScript: function (start, end, schema) { - var loc = this.get2DCursorLocation(start, true), fontSize = this.getValueOfPropertyAt(loc.lineIndex, loc.charIndex, 'fontSize'), dy = this.getValueOfPropertyAt(loc.lineIndex, loc.charIndex, 'deltaY'), style = { - fontSize: fontSize * schema.size, - deltaY: dy + fontSize * schema.baseline, - }; - this.setSelectionStyles(style, start, end); - return this; - }, - /** - * @private - * @param {Number} lineIndex index text line - * @return {Number} Line left offset - */ - _getLineLeftOffset: function (lineIndex) { - var lineWidth = this.getLineWidth(lineIndex), lineDiff = this.width - lineWidth, textAlign = this.textAlign, direction = this.direction, isEndOfWrapping, leftOffset = 0, isEndOfWrapping = this.isEndOfWrapping(lineIndex); - if (textAlign === 'justify' || - (textAlign === 'justify-center' && !isEndOfWrapping) || - (textAlign === 'justify-right' && !isEndOfWrapping) || - (textAlign === 'justify-left' && !isEndOfWrapping)) { - return 0; - } - if (textAlign === 'center') { - leftOffset = lineDiff / 2; - } - if (textAlign === 'right') { - leftOffset = lineDiff; - } - if (textAlign === 'justify-center') { - leftOffset = lineDiff / 2; - } - if (textAlign === 'justify-right') { - leftOffset = lineDiff; - } - if (direction === 'rtl') { - if (textAlign === 'right' || - textAlign === 'justify' || - textAlign === 'justify-right') { - leftOffset = 0; - } - else if (textAlign === 'left' || textAlign === 'justify-left') { - leftOffset = -lineDiff; - } - else if (textAlign === 'center' || textAlign === 'justify-center') { - leftOffset = -lineDiff / 2; - } - } - return leftOffset; - }, - /** - * @private - */ - _clearCache: function () { - this.__lineWidths = []; - this.__lineHeights = []; - this.__charBounds = []; - }, - /** - * @private - */ - _shouldClearDimensionCache: function () { - var shouldClear = this._forceClearCache; - shouldClear || - (shouldClear = this.hasStateChanged('_dimensionAffectingProps')); - if (shouldClear) { - this.dirty = true; - this._forceClearCache = false; - } - return shouldClear; - }, - /** - * Measure a single line given its index. Used to calculate the initial - * text bounding box. The values are calculated and stored in __lineWidths cache. - * @private - * @param {Number} lineIndex line number - * @return {Number} Line width - */ - getLineWidth: function (lineIndex) { - if (this.__lineWidths[lineIndex] !== undefined) { - return this.__lineWidths[lineIndex]; - } - var lineInfo = this.measureLine(lineIndex); - var width = lineInfo.width; - this.__lineWidths[lineIndex] = width; - return width; - }, - _getWidthOfCharSpacing: function () { - if (this.charSpacing !== 0) { - return (this.fontSize * this.charSpacing) / 1000; - } - return 0; - }, - /** - * Retrieves the value of property at given character position - * @param {Number} lineIndex the line number - * @param {Number} charIndex the character number - * @param {String} property the property name - * @returns the value of 'property' - */ - getValueOfPropertyAt: function (lineIndex, charIndex, property) { - var charStyle = this._getStyleDeclaration(lineIndex, charIndex); - if (charStyle && typeof charStyle[property] !== 'undefined') { - return charStyle[property]; - } - return this[property]; - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _renderTextDecoration: function (ctx, type) { - if (!this[type] && !this.styleHas(type)) { - return; - } - var heightOfLine, size, _size, lineLeftOffset, dy, _dy, line, lastDecoration, leftOffset = this._getLeftOffset(), topOffset = this._getTopOffset(), top, boxStart, boxWidth, charBox, currentDecoration, maxHeight, currentFill, lastFill, path = this.path, charSpacing = this._getWidthOfCharSpacing(), offsetY = this.offsets[type]; - for (var i = 0, len = this._textLines.length; i < len; i++) { - heightOfLine = this.getHeightOfLine(i); - if (!this[type] && !this.styleHas(type, i)) { - topOffset += heightOfLine; - continue; - } - line = this._textLines[i]; - maxHeight = heightOfLine / this.lineHeight; - lineLeftOffset = this._getLineLeftOffset(i); - boxStart = 0; - boxWidth = 0; - lastDecoration = this.getValueOfPropertyAt(i, 0, type); - lastFill = this.getValueOfPropertyAt(i, 0, 'fill'); - top = topOffset + maxHeight * (1 - this._fontSizeFraction); - size = this.getHeightOfChar(i, 0); - dy = this.getValueOfPropertyAt(i, 0, 'deltaY'); - for (var j = 0, jlen = line.length; j < jlen; j++) { - charBox = this.__charBounds[i][j]; - currentDecoration = this.getValueOfPropertyAt(i, j, type); - currentFill = this.getValueOfPropertyAt(i, j, 'fill'); - _size = this.getHeightOfChar(i, j); - _dy = this.getValueOfPropertyAt(i, j, 'deltaY'); - if (path && currentDecoration && currentFill) { - ctx.save(); - ctx.fillStyle = lastFill; - ctx.translate(charBox.renderLeft, charBox.renderTop); - ctx.rotate(charBox.angle); - ctx.fillRect(-charBox.kernedWidth / 2, offsetY * _size + _dy, charBox.kernedWidth, this.fontSize / 15); - ctx.restore(); - } - else if ((currentDecoration !== lastDecoration || - currentFill !== lastFill || - _size !== size || - _dy !== dy) && - boxWidth > 0) { - var drawStart = leftOffset + lineLeftOffset + boxStart; - if (this.direction === 'rtl') { - drawStart = this.width - drawStart - boxWidth; - } - if (lastDecoration && lastFill) { - ctx.fillStyle = lastFill; - ctx.fillRect(drawStart, top + offsetY * size + dy, boxWidth, this.fontSize / 15); - } - boxStart = charBox.left; - boxWidth = charBox.width; - lastDecoration = currentDecoration; - lastFill = currentFill; - size = _size; - dy = _dy; - } - else { - boxWidth += charBox.kernedWidth; - } - } - var drawStart = leftOffset + lineLeftOffset + boxStart; - if (this.direction === 'rtl') { - drawStart = this.width - drawStart - boxWidth; - } - ctx.fillStyle = currentFill; - currentDecoration && - currentFill && - ctx.fillRect(drawStart, top + offsetY * size + dy, boxWidth - charSpacing, this.fontSize / 15); - topOffset += heightOfLine; - } - // if there is text background color no - // other shadows should be casted - this._removeShadow(ctx); - }, - /** - * return font declaration string for canvas context - * @param {Object} [styleObject] object - * @returns {String} font declaration formatted for canvas context. - */ - _getFontDeclaration: function (styleObject, forMeasuring) { - var style = styleObject || this, family = this.fontFamily, fontIsGeneric = fabric.Text.genericFonts.indexOf(family.toLowerCase()) > -1; - var fontFamily = family === undefined || - family.indexOf("'") > -1 || - family.indexOf(',') > -1 || - family.indexOf('"') > -1 || - fontIsGeneric - ? style.fontFamily - : '"' + style.fontFamily + '"'; - return [ - // node-canvas needs "weight style", while browsers need "style weight" - // verify if this can be fixed in JSDOM - fabric.isLikelyNode ? style.fontWeight : style.fontStyle, - fabric.isLikelyNode ? style.fontStyle : style.fontWeight, - forMeasuring ? this.CACHE_FONT_SIZE + 'px' : style.fontSize + 'px', - fontFamily, - ].join(' '); - }, - /** - * Renders text instance on a specified context - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - render: function (ctx) { - // do not render if object is not visible - if (!this.visible) { - return; - } - if (this.canvas && - this.canvas.skipOffscreen && - !this.group && - !this.isOnScreen()) { - return; - } - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - } - this.callSuper('render', ctx); - }, - /** - * Override this method to customize grapheme splitting - * @param {string} value - * @returns {string[]} array of graphemes - */ - graphemeSplit: function (value) { - return fabric.util.string.graphemeSplit(value); - }, - /** - * Returns the text as an array of lines. - * @param {String} text text to split - * @returns {Array} Lines in the text - */ - _splitTextIntoLines: function (text) { - var lines = text.split(this._reNewline), newLines = new Array(lines.length), newLine = ['\n'], newText = []; - for (var i = 0; i < lines.length; i++) { - newLines[i] = this.graphemeSplit(lines[i]); - newText = newText.concat(newLines[i], newLine); - } - newText.pop(); - return { - _unwrappedLines: newLines, - lines: lines, - graphemeText: newText, - graphemeLines: newLines, - }; - }, - /** - * Returns object representation of an instance - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} Object representation of an instance - */ - toObject: function (propertiesToInclude) { - var allProperties = additionalProps.concat(propertiesToInclude); - var obj = this.callSuper('toObject', allProperties); - obj.styles = fabric.util.stylesToArray(this.styles, this.text); - if (obj.path) { - obj.path = this.path.toObject(); - } - return obj; - }, - /** - * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`. - * @param {String|Object} key Property name or object (if object, iterate over the object properties) - * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one) - * @return {fabric.Object} thisArg - * @chainable - */ - set: function (key, value) { - this.callSuper('set', key, value); - var needsDims = false; - var isAddingPath = false; - if (typeof key === 'object') { - for (var _key in key) { - if (_key === 'path') { - this.setPathInfo(); - } - needsDims = - needsDims || this._dimensionAffectingProps.indexOf(_key) !== -1; - isAddingPath = isAddingPath || _key === 'path'; - } - } - else { - needsDims = this._dimensionAffectingProps.indexOf(key) !== -1; - isAddingPath = key === 'path'; - } - if (isAddingPath) { - this.setPathInfo(); - } - if (needsDims) { - this.initDimensions(); - this.setCoords(); - } - return this; - }, - /** - * Returns complexity of an instance - * @return {Number} complexity - */ - complexity: function () { - return 1; - }, - }); - /* _FROM_SVG_START_ */ - /** - * List of attribute names to account for when parsing SVG element (used by {@link fabric.Text.fromElement}) - * @static - * @memberOf fabric.Text - * @see: http://www.w3.org/TR/SVG/text.html#TextElement - */ - fabric.Text.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x y dx dy font-family font-style font-weight font-size letter-spacing text-decoration text-anchor'.split(' ')); - /** - * Returns fabric.Text instance from an SVG element (not yet implemented) - * @static - * @memberOf fabric.Text - * @param {SVGElement} element Element to parse - * @param {Function} callback callback function invoked after parsing - * @param {Object} [options] Options object - */ - fabric.Text.fromElement = function (element, callback, options) { - if (!element) { - return callback(null); - } - var parsedAttributes = fabric.parseAttributes(element, fabric.Text.ATTRIBUTE_NAMES), parsedAnchor = parsedAttributes.textAnchor || 'left'; - options = Object.assign({}, options, parsedAttributes); - options.top = options.top || 0; - options.left = options.left || 0; - if (parsedAttributes.textDecoration) { - var textDecoration = parsedAttributes.textDecoration; - if (textDecoration.indexOf('underline') !== -1) { - options.underline = true; - } - if (textDecoration.indexOf('overline') !== -1) { - options.overline = true; - } - if (textDecoration.indexOf('line-through') !== -1) { - options.linethrough = true; - } - delete options.textDecoration; - } - if ('dx' in parsedAttributes) { - options.left += parsedAttributes.dx; + * Returns SVG representation of a pattern + * @param {fabric.Object} object + * @return {String} SVG representation of a pattern + */ + toSVG: function(object) { + var patternSource = typeof this.source === 'function' ? this.source() : this.source, + patternWidth = patternSource.width / object.width, + patternHeight = patternSource.height / object.height, + patternOffsetX = this.offsetX / object.width, + patternOffsetY = this.offsetY / object.height, + patternImgSrc = ''; + if (this.repeat === 'repeat-x' || this.repeat === 'no-repeat') { + patternHeight = 1; + if (patternOffsetY) { + patternHeight += Math.abs(patternOffsetY); } - if ('dy' in parsedAttributes) { - options.top += parsedAttributes.dy; + } + if (this.repeat === 'repeat-y' || this.repeat === 'no-repeat') { + patternWidth = 1; + if (patternOffsetX) { + patternWidth += Math.abs(patternOffsetX); } - if (!('fontSize' in options)) { - options.fontSize = DEFAULT_SVG_FONT_SIZE; + + } + if (patternSource.src) { + patternImgSrc = patternSource.src; + } + else if (patternSource.toDataURL) { + patternImgSrc = patternSource.toDataURL(); + } + + return '\n' + + '\n' + + '\n'; + }, + /* _TO_SVG_END_ */ + + setOptions: function(options) { + for (var prop in options) { + this[prop] = options[prop]; + } + }, + + /** + * Returns an instance of CanvasPattern + * @param {CanvasRenderingContext2D} ctx Context to create pattern + * @return {CanvasPattern} + */ + toLive: function(ctx) { + var source = this.source; + // if the image failed to load, return, and allow rest to continue loading + if (!source) { + return ''; + } + + // if an image + if (typeof source.src !== 'undefined') { + if (!source.complete) { + return ''; } - var textContent = ''; - // The XML is not properly parsed in IE9 so a workaround to get - // textContent is through firstChild.data. Another workaround would be - // to convert XML loaded from a file to be converted using DOMParser (same way loadSVGFromString() does) - if (!('textContent' in element)) { - if ('firstChild' in element && element.firstChild !== null) { - if ('data' in element.firstChild && element.firstChild.data !== null) { - textContent = element.firstChild.data; - } - } + if (source.naturalWidth === 0 || source.naturalHeight === 0) { + return ''; } - else { - textContent = element.textContent; - } - textContent = textContent - .replace(/^\s+|\s+$|\n+/g, '') - .replace(/\s+/g, ' '); - var originalStrokeWidth = options.strokeWidth; - options.strokeWidth = 0; - var text = new fabric.Text(textContent, options), textHeightScaleFactor = text.getScaledHeight() / text.height, lineHeightDiff = (text.height + text.strokeWidth) * text.lineHeight - text.height, scaledDiff = lineHeightDiff * textHeightScaleFactor, textHeight = text.getScaledHeight() + scaledDiff, offX = 0; - /* - Adjust positioning: - x/y attributes in SVG correspond to the bottom-left corner of text bounding box - fabric output by default at top, left. - */ - if (parsedAnchor === 'center') { - offX = text.getScaledWidth() / 2; - } - if (parsedAnchor === 'right') { - offX = text.getScaledWidth(); - } - text.set({ - left: text.left - offX, - top: text.top - - (textHeight - text.fontSize * (0.07 + text._fontSizeFraction)) / - text.lineHeight, - strokeWidth: typeof originalStrokeWidth !== 'undefined' ? originalStrokeWidth : 1, - }); - callback(text); - }; - /* _FROM_SVG_END_ */ + } + return ctx.createPattern(source, this.repeat); + } + }); +})(); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + toFixed = fabric.util.toFixed; + + if (fabric.Shadow) { + fabric.warn('fabric.Shadow is already defined.'); + return; + } + + /** + * Shadow class + * @class fabric.Shadow + * @see {@link http://fabricjs.com/shadows|Shadow demo} + * @see {@link fabric.Shadow#initialize} for constructor definition + */ + fabric.Shadow = fabric.util.createClass(/** @lends fabric.Shadow.prototype */ { + /** - * Returns fabric.Text instance from an object representation - * @static - * @memberOf fabric.Text - * @param {Object} object plain js Object to create an instance from - * @returns {Promise} - */ - fabric.Text.fromObject = function (object) { - var styles = fabric.util.stylesFromArray(object.styles, object.text); - //copy object to prevent mutation - var objCopy = Object.assign({}, object, { styles: styles }); - return fabric.Object._fromObject(fabric.Text, objCopy, { - extraParam: 'text', - }); - }; - fabric.Text.genericFonts = [ - 'sans-serif', - 'serif', - 'cursive', - 'fantasy', - 'monospace', - ]; - fabric.util.createAccessors && fabric.util.createAccessors(fabric.Text); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.Text.prototype, - /** @lends fabric.Text.prototype */ { - /** - * Returns true if object has no styling or no styling in a line - * @param {Number} lineIndex , lineIndex is on wrapped lines. - * @return {Boolean} - */ - isEmptyStyles: function (lineIndex) { - if (!this.styles) { - return true; - } - if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) { - return true; - } - var obj = typeof lineIndex === 'undefined' - ? this.styles - : { line: this.styles[lineIndex] }; - for (var p1 in obj) { - for (var p2 in obj[p1]) { - // eslint-disable-next-line no-unused-vars - for (var p3 in obj[p1][p2]) { - return false; - } - } - } - return true; - }, - /** - * Returns true if object has a style property or has it ina specified line - * This function is used to detect if a text will use a particular property or not. - * @param {String} property to check for - * @param {Number} lineIndex to check the style on - * @return {Boolean} - */ - styleHas: function (property, lineIndex) { - if (!this.styles || !property || property === '') { - return false; - } - if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) { - return false; - } - var obj = typeof lineIndex === 'undefined' - ? this.styles - : { 0: this.styles[lineIndex] }; - // eslint-disable-next-line - for (var p1 in obj) { - // eslint-disable-next-line - for (var p2 in obj[p1]) { - if (typeof obj[p1][p2][property] !== 'undefined') { - return true; - } - } - } - return false; - }, - /** - * Check if characters in a text have a value for a property - * whose value matches the textbox's value for that property. If so, - * the character-level property is deleted. If the character - * has no other properties, then it is also deleted. Finally, - * if the line containing that character has no other characters - * then it also is deleted. - * - * @param {string} property The property to compare between characters and text. - */ - cleanStyle: function (property) { - if (!this.styles || !property || property === '') { - return false; - } - var obj = this.styles, stylesCount = 0, letterCount, stylePropertyValue, allStyleObjectPropertiesMatch = true, graphemeCount = 0, styleObject; - // eslint-disable-next-line - for (var p1 in obj) { - letterCount = 0; - // eslint-disable-next-line - for (var p2 in obj[p1]) { - var styleObject = obj[p1][p2], stylePropertyHasBeenSet = styleObject.hasOwnProperty(property); - stylesCount++; - if (stylePropertyHasBeenSet) { - if (!stylePropertyValue) { - stylePropertyValue = styleObject[property]; - } - else if (styleObject[property] !== stylePropertyValue) { - allStyleObjectPropertiesMatch = false; - } - if (styleObject[property] === this[property]) { - delete styleObject[property]; - } - } - else { - allStyleObjectPropertiesMatch = false; - } - if (Object.keys(styleObject).length !== 0) { - letterCount++; - } - else { - delete obj[p1][p2]; - } - } - if (letterCount === 0) { - delete obj[p1]; - } - } - // if every grapheme has the same style set then - // delete those styles and set it on the parent - for (var i = 0; i < this._textLines.length; i++) { - graphemeCount += this._textLines[i].length; - } - if (allStyleObjectPropertiesMatch && stylesCount === graphemeCount) { - this[property] = stylePropertyValue; - this.removeStyle(property); - } - }, - /** - * Remove a style property or properties from all individual character styles - * in a text object. Deletes the character style object if it contains no other style - * props. Deletes a line style object if it contains no other character styles. - * - * @param {String} props The property to remove from character styles. - */ - removeStyle: function (property) { - if (!this.styles || !property || property === '') { - return; - } - var obj = this.styles, line, lineNum, charNum; - for (lineNum in obj) { - line = obj[lineNum]; - for (charNum in line) { - delete line[charNum][property]; - if (Object.keys(line[charNum]).length === 0) { - delete line[charNum]; - } - } - if (Object.keys(line).length === 0) { - delete obj[lineNum]; - } - } - }, - /** - * @private - */ - _extendStyles: function (index, styles) { - var loc = this.get2DCursorLocation(index); - if (!this._getLineStyle(loc.lineIndex)) { - this._setLineStyle(loc.lineIndex); - } - if (!this._getStyleDeclaration(loc.lineIndex, loc.charIndex)) { - this._setStyleDeclaration(loc.lineIndex, loc.charIndex, {}); - } - fabric.util.object.extend(this._getStyleDeclaration(loc.lineIndex, loc.charIndex), styles); - }, - /** - * Returns 2d representation (lineIndex and charIndex) of cursor (or selection start) - * @param {Number} [selectionStart] Optional index. When not given, current selectionStart is used. - * @param {Boolean} [skipWrapping] consider the location for unwrapped lines. useful to manage styles. - */ - get2DCursorLocation: function (selectionStart, skipWrapping) { - if (typeof selectionStart === 'undefined') { - selectionStart = this.selectionStart; - } - var lines = skipWrapping ? this._unwrappedTextLines : this._textLines, len = lines.length; - for (var i = 0; i < len; i++) { - if (selectionStart <= lines[i].length) { - return { - lineIndex: i, - charIndex: selectionStart, - }; - } - selectionStart -= lines[i].length + this.missingNewlineOffset(i); - } - return { - lineIndex: i - 1, - charIndex: lines[i - 1].length < selectionStart - ? lines[i - 1].length - : selectionStart, - }; - }, - /** - * Gets style of a current selection/cursor (at the start position) - * if startIndex or endIndex are not provided, selectionStart or selectionEnd will be used. - * @param {Number} [startIndex] Start index to get styles at - * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1 - * @param {Boolean} [complete] get full style or not - * @return {Array} styles an array with one, zero or more Style objects - */ - getSelectionStyles: function (startIndex, endIndex, complete) { - if (typeof startIndex === 'undefined') { - startIndex = this.selectionStart || 0; - } - if (typeof endIndex === 'undefined') { - endIndex = this.selectionEnd || startIndex; - } - var styles = []; - for (var i = startIndex; i < endIndex; i++) { - styles.push(this.getStyleAtPosition(i, complete)); - } - return styles; - }, - /** - * Gets style of a current selection/cursor position - * @param {Number} position to get styles at - * @param {Boolean} [complete] full style if true - * @return {Object} style Style object at a specified index - * @private - */ - getStyleAtPosition: function (position, complete) { - var loc = this.get2DCursorLocation(position), style = complete - ? this.getCompleteStyleDeclaration(loc.lineIndex, loc.charIndex) - : this._getStyleDeclaration(loc.lineIndex, loc.charIndex); - return style || {}; - }, - /** - * Sets style of a current selection, if no selection exist, do not set anything. - * @param {Object} [styles] Styles object - * @param {Number} [startIndex] Start index to get styles at - * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1 - * @return {fabric.IText} thisArg - * @chainable - */ - setSelectionStyles: function (styles, startIndex, endIndex) { - if (typeof startIndex === 'undefined') { - startIndex = this.selectionStart || 0; - } - if (typeof endIndex === 'undefined') { - endIndex = this.selectionEnd || startIndex; - } - for (var i = startIndex; i < endIndex; i++) { - this._extendStyles(i, styles); - } - /* not included in _extendStyles to avoid clearing cache more than once */ - this._forceClearCache = true; - return this; - }, - /** - * get the reference, not a clone, of the style object for a given character - * @param {Number} lineIndex - * @param {Number} charIndex - * @return {Object} style object - */ - _getStyleDeclaration: function (lineIndex, charIndex) { - var lineStyle = this.styles && this.styles[lineIndex]; - if (!lineStyle) { - return null; - } - return lineStyle[charIndex]; - }, - /** - * return a new object that contains all the style property for a character - * the object returned is newly created - * @param {Number} lineIndex of the line where the character is - * @param {Number} charIndex position of the character on the line - * @return {Object} style object - */ - getCompleteStyleDeclaration: function (lineIndex, charIndex) { - var style = this._getStyleDeclaration(lineIndex, charIndex) || {}, styleObject = {}, prop; - for (var i = 0; i < this._styleProperties.length; i++) { - prop = this._styleProperties[i]; - styleObject[prop] = - typeof style[prop] === 'undefined' ? this[prop] : style[prop]; - } - return styleObject; - }, - /** - * @param {Number} lineIndex - * @param {Number} charIndex - * @param {Object} style - * @private - */ - _setStyleDeclaration: function (lineIndex, charIndex, style) { - this.styles[lineIndex][charIndex] = style; - }, - /** - * - * @param {Number} lineIndex - * @param {Number} charIndex - * @private - */ - _deleteStyleDeclaration: function (lineIndex, charIndex) { - delete this.styles[lineIndex][charIndex]; - }, - /** - * @param {Number} lineIndex - * @return {Boolean} if the line exists or not - * @private - */ - _getLineStyle: function (lineIndex) { - return !!this.styles[lineIndex]; - }, - /** - * Set the line style to an empty object so that is initialized - * @param {Number} lineIndex - * @private - */ - _setLineStyle: function (lineIndex) { - this.styles[lineIndex] = {}; - }, - /** - * @param {Number} lineIndex - * @private - */ - _deleteLineStyle: function (lineIndex) { - delete this.styles[lineIndex]; - }, - }); -})(typeof exports !== 'undefined' ? exports : window); + * Shadow color + * @type String + * @default + */ + color: 'rgb(0,0,0)', -//@ts-nocheck -(function (global) { - var fabric = global.fabric; /** - * IText class (introduced in v1.4) Events are also fired with "text:" - * prefix when observing canvas. - * @class fabric.IText - * @extends fabric.Text - * @mixes fabric.Observable - * - * @fires changed - * @fires selection:changed - * @fires editing:entered - * @fires editing:exited - * @fires dragstart - * @fires drag drag event firing on the drag source - * @fires dragend - * @fires copy - * @fires cut - * @fires paste - * - * @return {fabric.IText} thisArg - * @see {@link fabric.IText#initialize} for constructor definition - * - *

Supported key combinations:

- * 
-     *   Move cursor:                    left, right, up, down
-     *   Select character:               shift + left, shift + right
-     *   Select text vertically:         shift + up, shift + down
-     *   Move cursor by word:            alt + left, alt + right
-     *   Select words:                   shift + alt + left, shift + alt + right
-     *   Move cursor to line start/end:  cmd + left, cmd + right or home, end
-     *   Select till start/end of line:  cmd + shift + left, cmd + shift + right or shift + home, shift + end
-     *   Jump to start/end of text:      cmd + up, cmd + down
-     *   Select till start/end of text:  cmd + shift + up, cmd + shift + down or shift + pgUp, shift + pgDown
-     *   Delete character:               backspace
-     *   Delete word:                    alt + backspace
-     *   Delete line:                    cmd + backspace
-     *   Forward delete:                 delete
-     *   Copy text:                      ctrl/cmd + c
-     *   Paste text:                     ctrl/cmd + v
-     *   Cut text:                       ctrl/cmd + x
-     *   Select entire text:             ctrl/cmd + a
-     *   Quit editing                    tab or esc
-     *
- * - *

Supported mouse/touch combination

- * 
-     *   Position cursor:                click/touch
-     *   Create selection:               click/touch & drag
-     *   Create selection:               click & shift + click
-     *   Select word:                    double click
-     *   Select line:                    triple click
-     *
- */ - fabric.IText = fabric.util.createClass(fabric.Text, fabric.Observable, - /** @lends fabric.IText.prototype */ { - /** - * Type of an object - * @type String - * @default - */ - type: 'i-text', - /** - * Index where text selection starts (or where cursor is when there is no selection) - * @type Number - * @default - */ - selectionStart: 0, - /** - * Index where text selection ends - * @type Number - * @default - */ - selectionEnd: 0, - /** - * Color of text selection - * @type String - * @default - */ - selectionColor: 'rgba(17,119,255,0.3)', - /** - * Indicates whether text is in editing mode - * @type Boolean - * @default - */ - isEditing: false, - /** - * Indicates whether a text can be edited - * @type Boolean - * @default - */ - editable: true, - /** - * Border color of text object while it's in editing mode - * @type String - * @default - */ - editingBorderColor: 'rgba(102,153,255,0.25)', - /** - * Width of cursor (in px) - * @type Number - * @default - */ - cursorWidth: 2, - /** - * Color of text cursor color in editing mode. - * if not set (default) will take color from the text. - * if set to a color value that fabric can understand, it will - * be used instead of the color of the text at the current position. - * @type String - * @default - */ - cursorColor: '', - /** - * Delay between cursor blink (in ms) - * @type Number - * @default - */ - cursorDelay: 1000, - /** - * Duration of cursor fadein (in ms) - * @type Number - * @default - */ - cursorDuration: 600, - /** - * Indicates whether internal text char widths can be cached - * @type Boolean - * @default - */ - caching: true, - /** - * DOM container to append the hiddenTextarea. - * An alternative to attaching to the document.body. - * Useful to reduce laggish redraw of the full document.body tree and - * also with modals event capturing that won't let the textarea take focus. - * @type HTMLElement - * @default - */ - hiddenTextareaContainer: null, - /** - * @private - */ - _reSpace: /\s|\n/, - /** - * @private - */ - _currentCursorOpacity: 1, - /** - * @private - */ - _selectionDirection: null, - /** - * Helps determining when the text is in composition, so that the cursor - * rendering is altered. - */ - inCompositionMode: false, - /** - * Constructor - * @param {String} text Text string - * @param {Object} [options] Options object - * @return {fabric.IText} thisArg - */ - initialize: function (text, options) { - this.callSuper('initialize', text, options); - this.initBehavior(); - }, - /** - * While editing handle differently - * @private - * @param {string} key - * @param {*} value - */ - _set: function (key, value) { - if (this.isEditing && this._savedProps && key in this._savedProps) { - this._savedProps[key] = value; - } - else { - this.callSuper('_set', key, value); - } - }, - /** - * Sets selection start (left boundary of a selection) - * @param {Number} index Index to set selection start to - */ - setSelectionStart: function (index) { - index = Math.max(index, 0); - this._updateAndFire('selectionStart', index); - }, - /** - * Sets selection end (right boundary of a selection) - * @param {Number} index Index to set selection end to - */ - setSelectionEnd: function (index) { - index = Math.min(index, this.text.length); - this._updateAndFire('selectionEnd', index); - }, - /** - * @private - * @param {String} property 'selectionStart' or 'selectionEnd' - * @param {Number} index new position of property - */ - _updateAndFire: function (property, index) { - if (this[property] !== index) { - this._fireSelectionChanged(); - this[property] = index; - } - this._updateTextarea(); - }, - /** - * Fires the even of selection changed - * @private - */ - _fireSelectionChanged: function () { - this.fire('selection:changed'); - this.canvas && - this.canvas.fire('text:selection:changed', { target: this }); - }, - /** - * Initialize text dimensions. Render all text on given context - * or on a offscreen canvas to get the text width with measureText. - * Updates this.width and this.height with the proper values. - * Does not return dimensions. - * @private - */ - initDimensions: function () { - this.isEditing && this.initDelayedCursor(); - this.clearContextTop(); - this.callSuper('initDimensions'); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - render: function (ctx) { - this.clearContextTop(); - this.callSuper('render', ctx); - // clear the cursorOffsetCache, so we ensure to calculate once per renderCursor - // the correct position but not at every cursor animation. - this.cursorOffsetCache = {}; - this.renderCursorOrSelection(); - }, - /** - * @private - * @param {CanvasRenderingContext2D} ctx Context to render on - */ - _render: function (ctx) { - this.callSuper('_render', ctx); - }, - /** - * Renders cursor or selection (depending on what exists) - * it does on the contextTop. If contextTop is not available, do nothing. - */ - renderCursorOrSelection: function () { - if (!this.isEditing) { - return; - } - var ctx = this.clearContextTop(true); - if (!ctx) { - return; - } - var boundaries = this._getCursorBoundaries(); - if (this.selectionStart === this.selectionEnd) { - this.renderCursor(ctx, boundaries); - } - else { - this.renderSelection(ctx, boundaries); - } - ctx.restore(); - }, - /** - * Renders cursor on context Top, outside the animation cycle, on request - * Used for the drag/drop effect. - * If contextTop is not available, do nothing. - */ - renderCursorAt: function (selectionStart) { - var boundaries = this._getCursorBoundaries(selectionStart, true); - this._renderCursor(this.canvas.contextTop, boundaries, selectionStart); - }, - /** - * Returns cursor boundaries (left, top, leftOffset, topOffset) - * left/top are left/top of entire text box - * leftOffset/topOffset are offset from that left/top point of a text box - * @private - * @param {number} [index] index from start - * @param {boolean} [skipCaching] - */ - _getCursorBoundaries: function (index, skipCaching) { - if (typeof index === 'undefined') { - index = this.selectionStart; - } - var left = this._getLeftOffset(), top = this._getTopOffset(), offsets = this._getCursorBoundariesOffsets(index, skipCaching); - return { - left: left, - top: top, - leftOffset: offsets.left, - topOffset: offsets.top, - }; - }, - /** - * Caches and returns cursor left/top offset relative to instance's center point - * @private - * @param {number} index index from start - * @param {boolean} [skipCaching] - */ - _getCursorBoundariesOffsets: function (index, skipCaching) { - if (skipCaching) { - return this.__getCursorBoundariesOffsets(index); - } - if (this.cursorOffsetCache && 'top' in this.cursorOffsetCache) { - return this.cursorOffsetCache; - } - return (this.cursorOffsetCache = - this.__getCursorBoundariesOffsets(index)); - }, - /** - * Calcualtes cursor left/top offset relative to instance's center point - * @private - * @param {number} index index from start - */ - __getCursorBoundariesOffsets: function (index) { - var lineLeftOffset, lineIndex, charIndex, topOffset = 0, leftOffset = 0, boundaries, cursorPosition = this.get2DCursorLocation(index); - charIndex = cursorPosition.charIndex; - lineIndex = cursorPosition.lineIndex; - for (var i = 0; i < lineIndex; i++) { - topOffset += this.getHeightOfLine(i); - } - lineLeftOffset = this._getLineLeftOffset(lineIndex); - var bound = this.__charBounds[lineIndex][charIndex]; - bound && (leftOffset = bound.left); - if (this.charSpacing !== 0 && - charIndex === this._textLines[lineIndex].length) { - leftOffset -= this._getWidthOfCharSpacing(); - } - boundaries = { - top: topOffset, - left: lineLeftOffset + (leftOffset > 0 ? leftOffset : 0), - }; - if (this.direction === 'rtl') { - if (this.textAlign === 'right' || - this.textAlign === 'justify' || - this.textAlign === 'justify-right') { - boundaries.left *= -1; - } - else if (this.textAlign === 'left' || - this.textAlign === 'justify-left') { - boundaries.left = - lineLeftOffset - (leftOffset > 0 ? leftOffset : 0); - } - else if (this.textAlign === 'center' || - this.textAlign === 'justify-center') { - boundaries.left = - lineLeftOffset - (leftOffset > 0 ? leftOffset : 0); - } - } - return boundaries; - }, - /** - * Renders cursor - * @param {Object} boundaries - * @param {CanvasRenderingContext2D} ctx transformed context to draw on - */ - renderCursor: function (ctx, boundaries) { - this._renderCursor(ctx, boundaries, this.selectionStart); - }, - _renderCursor: function (ctx, boundaries, selectionStart) { - var cursorLocation = this.get2DCursorLocation(selectionStart), lineIndex = cursorLocation.lineIndex, charIndex = cursorLocation.charIndex > 0 ? cursorLocation.charIndex - 1 : 0, charHeight = this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize'), multiplier = this.scaleX * this.canvas.getZoom(), cursorWidth = this.cursorWidth / multiplier, topOffset = boundaries.topOffset, dy = this.getValueOfPropertyAt(lineIndex, charIndex, 'deltaY'); - topOffset += - ((1 - this._fontSizeFraction) * this.getHeightOfLine(lineIndex)) / - this.lineHeight - - charHeight * (1 - this._fontSizeFraction); - if (this.inCompositionMode) { - // TODO: investigate why there isn't a return inside the if, - // and why can't happe top of the function - this.renderSelection(ctx, boundaries); - } - ctx.fillStyle = - this.cursorColor || - this.getValueOfPropertyAt(lineIndex, charIndex, 'fill'); - ctx.globalAlpha = this.__isMousedown ? 1 : this._currentCursorOpacity; - ctx.fillRect(boundaries.left + boundaries.leftOffset - cursorWidth / 2, topOffset + boundaries.top + dy, cursorWidth, charHeight); - }, - /** - * Renders text selection - * @param {Object} boundaries Object with left/top/leftOffset/topOffset - * @param {CanvasRenderingContext2D} ctx transformed context to draw on - */ - renderSelection: function (ctx, boundaries) { - var selection = { - selectionStart: this.inCompositionMode - ? this.hiddenTextarea.selectionStart - : this.selectionStart, - selectionEnd: this.inCompositionMode - ? this.hiddenTextarea.selectionEnd - : this.selectionEnd, - }; - this._renderSelection(ctx, selection, boundaries); - }, - /** - * Renders drag start text selection - */ - renderDragSourceEffect: function () { - if (this.__isDragging && - this.__dragStartSelection && - this.__dragStartSelection) { - this._renderSelection(this.canvas.contextTop, this.__dragStartSelection, this._getCursorBoundaries(this.__dragStartSelection.selectionStart, true)); - } - }, - renderDropTargetEffect: function (e) { - var dragSelection = this.getSelectionStartFromPointer(e); - this.renderCursorAt(dragSelection); - }, - /** - * Renders text selection - * @private - * @param {{ selectionStart: number, selectionEnd: number }} selection - * @param {Object} boundaries Object with left/top/leftOffset/topOffset - * @param {CanvasRenderingContext2D} ctx transformed context to draw on - */ - _renderSelection: function (ctx, selection, boundaries) { - var selectionStart = selection.selectionStart, selectionEnd = selection.selectionEnd, isJustify = this.textAlign.indexOf('justify') !== -1, start = this.get2DCursorLocation(selectionStart), end = this.get2DCursorLocation(selectionEnd), startLine = start.lineIndex, endLine = end.lineIndex, startChar = start.charIndex < 0 ? 0 : start.charIndex, endChar = end.charIndex < 0 ? 0 : end.charIndex; - for (var i = startLine; i <= endLine; i++) { - var lineOffset = this._getLineLeftOffset(i) || 0, lineHeight = this.getHeightOfLine(i), realLineHeight = 0, boxStart = 0, boxEnd = 0; - if (i === startLine) { - boxStart = this.__charBounds[startLine][startChar].left; - } - if (i >= startLine && i < endLine) { - boxEnd = - isJustify && !this.isEndOfWrapping(i) - ? this.width - : this.getLineWidth(i) || 5; // WTF is this 5? - } - else if (i === endLine) { - if (endChar === 0) { - boxEnd = this.__charBounds[endLine][endChar].left; - } - else { - var charSpacing = this._getWidthOfCharSpacing(); - boxEnd = - this.__charBounds[endLine][endChar - 1].left + - this.__charBounds[endLine][endChar - 1].width - - charSpacing; - } - } - realLineHeight = lineHeight; - if (this.lineHeight < 1 || (i === endLine && this.lineHeight > 1)) { - lineHeight /= this.lineHeight; - } - var drawStart = boundaries.left + lineOffset + boxStart, drawWidth = boxEnd - boxStart, drawHeight = lineHeight, extraTop = 0; - if (this.inCompositionMode) { - ctx.fillStyle = this.compositionColor || 'black'; - drawHeight = 1; - extraTop = lineHeight; - } - else { - ctx.fillStyle = this.selectionColor; - } - if (this.direction === 'rtl') { - if (this.textAlign === 'right' || - this.textAlign === 'justify' || - this.textAlign === 'justify-right') { - drawStart = this.width - drawStart - drawWidth; - } - else if (this.textAlign === 'left' || - this.textAlign === 'justify-left') { - drawStart = boundaries.left + lineOffset - boxEnd; - } - else if (this.textAlign === 'center' || - this.textAlign === 'justify-center') { - drawStart = boundaries.left + lineOffset - boxEnd; - } - } - ctx.fillRect(drawStart, boundaries.top + boundaries.topOffset + extraTop, drawWidth, drawHeight); - boundaries.topOffset += realLineHeight; - } - }, - /** - * High level function to know the height of the cursor. - * the currentChar is the one that precedes the cursor - * Returns fontSize of char at the current cursor - * Unused from the library, is for the end user - * @return {Number} Character font size - */ - getCurrentCharFontSize: function () { - var cp = this._getCurrentCharIndex(); - return this.getValueOfPropertyAt(cp.l, cp.c, 'fontSize'); - }, - /** - * High level function to know the color of the cursor. - * the currentChar is the one that precedes the cursor - * Returns color (fill) of char at the current cursor - * if the text object has a pattern or gradient for filler, it will return that. - * Unused by the library, is for the end user - * @return {String | fabric.Gradient | fabric.Pattern} Character color (fill) - */ - getCurrentCharColor: function () { - var cp = this._getCurrentCharIndex(); - return this.getValueOfPropertyAt(cp.l, cp.c, 'fill'); - }, - /** - * Returns the cursor position for the getCurrent.. functions - * @private - */ - _getCurrentCharIndex: function () { - var cursorPosition = this.get2DCursorLocation(this.selectionStart, true), charIndex = cursorPosition.charIndex > 0 ? cursorPosition.charIndex - 1 : 0; - return { l: cursorPosition.lineIndex, c: charIndex }; - }, + * Shadow blur + * @type Number + */ + blur: 0, + + /** + * Shadow horizontal offset + * @type Number + * @default + */ + offsetX: 0, + + /** + * Shadow vertical offset + * @type Number + * @default + */ + offsetY: 0, + + /** + * Whether the shadow should affect stroke operations + * @type Boolean + * @default + */ + affectStroke: false, + + /** + * Indicates whether toObject should include default values + * @type Boolean + * @default + */ + includeDefaultValues: true, + + /** + * When `false`, the shadow will scale with the object. + * When `true`, the shadow's offsetX, offsetY, and blur will not be affected by the object's scale. + * default to false + * @type Boolean + * @default + */ + nonScaling: false, + + /** + * Constructor + * @param {Object|String} [options] Options object with any of color, blur, offsetX, offsetY properties or string (e.g. "rgba(0,0,0,0.2) 2px 2px 10px") + * @return {fabric.Shadow} thisArg + */ + initialize: function(options) { + + if (typeof options === 'string') { + options = this._parseShadow(options); + } + + for (var prop in options) { + this[prop] = options[prop]; + } + + this.id = fabric.Object.__uid++; + }, + + /** + * @private + * @param {String} shadow Shadow value to parse + * @return {Object} Shadow object with color, offsetX, offsetY and blur + */ + _parseShadow: function(shadow) { + var shadowStr = shadow.trim(), + offsetsAndBlur = fabric.Shadow.reOffsetsAndBlur.exec(shadowStr) || [], + color = shadowStr.replace(fabric.Shadow.reOffsetsAndBlur, '') || 'rgb(0,0,0)'; + + return { + color: color.trim(), + offsetX: parseFloat(offsetsAndBlur[1], 10) || 0, + offsetY: parseFloat(offsetsAndBlur[2], 10) || 0, + blur: parseFloat(offsetsAndBlur[3], 10) || 0 + }; + }, + + /** + * Returns a string representation of an instance + * @see http://www.w3.org/TR/css-text-decor-3/#text-shadow + * @return {String} Returns CSS3 text-shadow declaration + */ + toString: function() { + return [this.offsetX, this.offsetY, this.blur, this.color].join('px '); + }, + + /* _TO_SVG_START_ */ + /** + * Returns SVG representation of a shadow + * @param {fabric.Object} object + * @return {String} SVG representation of a shadow + */ + toSVG: function(object) { + var fBoxX = 40, fBoxY = 40, NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS, + offset = fabric.util.rotateVector( + { x: this.offsetX, y: this.offsetY }, + fabric.util.degreesToRadians(-object.angle)), + BLUR_BOX = 20, color = new fabric.Color(this.color); + + if (object.width && object.height) { + //http://www.w3.org/TR/SVG/filters.html#FilterEffectsRegion + // we add some extra space to filter box to contain the blur ( 20 ) + fBoxX = toFixed((Math.abs(offset.x) + this.blur) / object.width, NUM_FRACTION_DIGITS) * 100 + BLUR_BOX; + fBoxY = toFixed((Math.abs(offset.y) + this.blur) / object.height, NUM_FRACTION_DIGITS) * 100 + BLUR_BOX; + } + if (object.flipX) { + offset.x *= -1; + } + if (object.flipY) { + offset.y *= -1; + } + + return ( + '\n' + + '\t\n' + + '\t\n' + + '\t\n' + + '\t\n' + + '\t\n' + + '\t\t\n' + + '\t\t\n' + + '\t\n' + + '\n'); + }, + /* _TO_SVG_END_ */ + + /** + * Returns object representation of a shadow + * @return {Object} Object representation of a shadow instance + */ + toObject: function() { + if (this.includeDefaultValues) { + return { + color: this.color, + blur: this.blur, + offsetX: this.offsetX, + offsetY: this.offsetY, + affectStroke: this.affectStroke, + nonScaling: this.nonScaling + }; + } + var obj = { }, proto = fabric.Shadow.prototype; + + ['color', 'blur', 'offsetX', 'offsetY', 'affectStroke', 'nonScaling'].forEach(function(prop) { + if (this[prop] !== proto[prop]) { + obj[prop] = this[prop]; + } + }, this); + + return obj; + } + }); + + /** + * Regex matching shadow offsetX, offsetY and blur (ex: "2px 2px 10px rgba(0,0,0,0.2)", "rgb(0,255,0) 2px 2px") + * @static + * @field + * @memberOf fabric.Shadow + */ + // eslint-disable-next-line max-len + fabric.Shadow.reOffsetsAndBlur = /(?:\s|^)(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(\d+(?:\.\d*)?(?:px)?)?(?:\s?|$)(?:$|\s)/; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function () { + + 'use strict'; + + if (fabric.StaticCanvas) { + fabric.warn('fabric.StaticCanvas is already defined.'); + return; + } + + // aliases for faster resolution + var extend = fabric.util.object.extend, + getElementOffset = fabric.util.getElementOffset, + removeFromArray = fabric.util.removeFromArray, + toFixed = fabric.util.toFixed, + transformPoint = fabric.util.transformPoint, + invertTransform = fabric.util.invertTransform, + getNodeCanvas = fabric.util.getNodeCanvas, + createCanvasElement = fabric.util.createCanvasElement, + + CANVAS_INIT_ERROR = new Error('Could not initialize `canvas` element'); + + /** + * Static canvas class + * @class fabric.StaticCanvas + * @mixes fabric.Collection + * @mixes fabric.Observable + * @see {@link http://fabricjs.com/static_canvas|StaticCanvas demo} + * @see {@link fabric.StaticCanvas#initialize} for constructor definition + * @fires before:render + * @fires after:render + * @fires canvas:cleared + * @fires object:added + * @fires object:removed + */ + fabric.StaticCanvas = fabric.util.createClass(fabric.CommonMethods, /** @lends fabric.StaticCanvas.prototype */ { + + /** + * Constructor + * @param {HTMLElement | String} el <canvas> element to initialize instance on + * @param {Object} [options] Options object + * @return {Object} thisArg + */ + initialize: function(el, options) { + options || (options = { }); + this.renderAndResetBound = this.renderAndReset.bind(this); + this.requestRenderAllBound = this.requestRenderAll.bind(this); + this._initStatic(el, options); + }, + + /** + * Background color of canvas instance. + * Should be set via {@link fabric.StaticCanvas#setBackgroundColor}. + * @type {(String|fabric.Pattern)} + * @default + */ + backgroundColor: '', + + /** + * Background image of canvas instance. + * since 2.4.0 image caching is active, please when putting an image as background, add to the + * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom + * vale. As an alternative you can disable image objectCaching + * @type fabric.Image + * @default + */ + backgroundImage: null, + + /** + * Overlay color of canvas instance. + * Should be set via {@link fabric.StaticCanvas#setOverlayColor} + * @since 1.3.9 + * @type {(String|fabric.Pattern)} + * @default + */ + overlayColor: '', + + /** + * Overlay image of canvas instance. + * since 2.4.0 image caching is active, please when putting an image as overlay, add to the + * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom + * vale. As an alternative you can disable image objectCaching + * @type fabric.Image + * @default + */ + overlayImage: null, + + /** + * Indicates whether toObject/toDatalessObject should include default values + * if set to false, takes precedence over the object value. + * @type Boolean + * @default + */ + includeDefaultValues: true, + + /** + * Indicates whether objects' state should be saved + * @type Boolean + * @default + */ + stateful: false, + + /** + * Indicates whether {@link fabric.Collection.add}, {@link fabric.Collection.insertAt} and {@link fabric.Collection.remove}, + * {@link fabric.StaticCanvas.moveTo}, {@link fabric.StaticCanvas.clear} and many more, should also re-render canvas. + * Disabling this option will not give a performance boost when adding/removing a lot of objects to/from canvas at once + * since the renders are quequed and executed one per frame. + * Disabling is suggested anyway and managing the renders of the app manually is not a big effort ( canvas.requestRenderAll() ) + * Left default to true to do not break documentation and old app, fiddles. + * @type Boolean + * @default + */ + renderOnAddRemove: true, + + /** + * Indicates whether object controls (borders/controls) are rendered above overlay image + * @type Boolean + * @default + */ + controlsAboveOverlay: false, + + /** + * Indicates whether the browser can be scrolled when using a touchscreen and dragging on the canvas + * @type Boolean + * @default + */ + allowTouchScrolling: false, + + /** + * Indicates whether this canvas will use image smoothing, this is on by default in browsers + * @type Boolean + * @default + */ + imageSmoothingEnabled: true, + + /** + * The transformation (a Canvas 2D API transform matrix) which focuses the viewport + * @type Array + * @example Default transform + * canvas.viewportTransform = [1, 0, 0, 1, 0, 0]; + * @example Scale by 70% and translate toward bottom-right by 50, without skewing + * canvas.viewportTransform = [0.7, 0, 0, 0.7, 50, 50]; + * @default + */ + viewportTransform: fabric.iMatrix.concat(), + + /** + * if set to false background image is not affected by viewport transform + * @since 1.6.3 + * @type Boolean + * @default + */ + backgroundVpt: true, + + /** + * if set to false overlya image is not affected by viewport transform + * @since 1.6.3 + * @type Boolean + * @default + */ + overlayVpt: true, + + /** + * When true, canvas is scaled by devicePixelRatio for better rendering on retina screens + * @type Boolean + * @default + */ + enableRetinaScaling: true, + + /** + * Describe canvas element extension over design + * properties are tl,tr,bl,br. + * if canvas is not zoomed/panned those points are the four corner of canvas + * if canvas is viewportTransformed you those points indicate the extension + * of canvas element in plain untrasformed coordinates + * The coordinates get updated with @method calcViewportBoundaries. + * @memberOf fabric.StaticCanvas.prototype + */ + vptCoords: { }, + + /** + * Based on vptCoords and object.aCoords, skip rendering of objects that + * are not included in current viewport. + * May greatly help in applications with crowded canvas and use of zoom/pan + * If One of the corner of the bounding box of the object is on the canvas + * the objects get rendered. + * @memberOf fabric.StaticCanvas.prototype + * @type Boolean + * @default + */ + skipOffscreen: true, + + /** + * a fabricObject that, without stroke define a clipping area with their shape. filled in black + * the clipPath object gets used when the canvas has rendered, and the context is placed in the + * top left corner of the canvas. + * clipPath will clip away controls, if you do not want this to happen use controlsAboveOverlay = true + * @type fabric.Object + */ + clipPath: undefined, + + /** + * @private + * @param {HTMLElement | String} el <canvas> element to initialize instance on + * @param {Object} [options] Options object + */ + _initStatic: function(el, options) { + var cb = this.requestRenderAllBound; + this._objects = []; + this._createLowerCanvas(el); + this._initOptions(options); + // only initialize retina scaling once + if (!this.interactive) { + this._initRetinaScaling(); + } + + if (options.overlayImage) { + this.setOverlayImage(options.overlayImage, cb); + } + if (options.backgroundImage) { + this.setBackgroundImage(options.backgroundImage, cb); + } + if (options.backgroundColor) { + this.setBackgroundColor(options.backgroundColor, cb); + } + if (options.overlayColor) { + this.setOverlayColor(options.overlayColor, cb); + } + this.calcOffset(); + }, + + /** + * @private + */ + _isRetinaScaling: function() { + return (fabric.devicePixelRatio > 1 && this.enableRetinaScaling); + }, + + /** + * @private + * @return {Number} retinaScaling if applied, otherwise 1; + */ + getRetinaScaling: function() { + return this._isRetinaScaling() ? Math.max(1, fabric.devicePixelRatio) : 1; + }, + + /** + * @private + */ + _initRetinaScaling: function() { + if (!this._isRetinaScaling()) { + return; + } + var scaleRatio = fabric.devicePixelRatio; + this.__initRetinaScaling(scaleRatio, this.lowerCanvasEl, this.contextContainer); + if (this.upperCanvasEl) { + this.__initRetinaScaling(scaleRatio, this.upperCanvasEl, this.contextTop); + } + }, + + __initRetinaScaling: function(scaleRatio, canvas, context) { + canvas.setAttribute('width', this.width * scaleRatio); + canvas.setAttribute('height', this.height * scaleRatio); + context.scale(scaleRatio, scaleRatio); + }, + + + /** + * Calculates canvas element offset relative to the document + * This method is also attached as "resize" event handler of window + * @return {fabric.Canvas} instance + * @chainable + */ + calcOffset: function () { + this._offset = getElementOffset(this.lowerCanvasEl); + return this; + }, + + /** + * Sets {@link fabric.StaticCanvas#overlayImage|overlay image} for this canvas + * @param {(fabric.Image|String)} image fabric.Image instance or URL of an image to set overlay to + * @param {Function} callback callback to invoke when image is loaded and set as an overlay + * @param {Object} [options] Optional options to set for the {@link fabric.Image|overlay image}. + * @return {fabric.Canvas} thisArg + * @chainable + * @see {@link http://jsfiddle.net/fabricjs/MnzHT/|jsFiddle demo} + * @example Normal overlayImage with left/top = 0 + * canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), { + * // Needed to position overlayImage at 0/0 + * originX: 'left', + * originY: 'top' + * }); + * @example overlayImage with different properties + * canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), { + * opacity: 0.5, + * angle: 45, + * left: 400, + * top: 400, + * originX: 'left', + * originY: 'top' + * }); + * @example Stretched overlayImage #1 - width/height correspond to canvas width/height + * fabric.Image.fromURL('http://fabricjs.com/assets/jail_cell_bars.png', function(img, isError) { + * img.set({width: canvas.width, height: canvas.height, originX: 'left', originY: 'top'}); + * canvas.setOverlayImage(img, canvas.renderAll.bind(canvas)); + * }); + * @example Stretched overlayImage #2 - width/height correspond to canvas width/height + * canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), { + * width: canvas.width, + * height: canvas.height, + * // Needed to position overlayImage at 0/0 + * originX: 'left', + * originY: 'top' + * }); + * @example overlayImage loaded from cross-origin + * canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), { + * opacity: 0.5, + * angle: 45, + * left: 400, + * top: 400, + * originX: 'left', + * originY: 'top', + * crossOrigin: 'anonymous' + * }); + */ + setOverlayImage: function (image, callback, options) { + return this.__setBgOverlayImage('overlayImage', image, callback, options); + }, + + /** + * Sets {@link fabric.StaticCanvas#backgroundImage|background image} for this canvas + * @param {(fabric.Image|String)} image fabric.Image instance or URL of an image to set background to + * @param {Function} callback Callback to invoke when image is loaded and set as background + * @param {Object} [options] Optional options to set for the {@link fabric.Image|background image}. + * @return {fabric.Canvas} thisArg + * @chainable + * @see {@link http://jsfiddle.net/djnr8o7a/28/|jsFiddle demo} + * @example Normal backgroundImage with left/top = 0 + * canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), { + * // Needed to position backgroundImage at 0/0 + * originX: 'left', + * originY: 'top' + * }); + * @example backgroundImage with different properties + * canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), { + * opacity: 0.5, + * angle: 45, + * left: 400, + * top: 400, + * originX: 'left', + * originY: 'top' + * }); + * @example Stretched backgroundImage #1 - width/height correspond to canvas width/height + * fabric.Image.fromURL('http://fabricjs.com/assets/honey_im_subtle.png', function(img, isError) { + * img.set({width: canvas.width, height: canvas.height, originX: 'left', originY: 'top'}); + * canvas.setBackgroundImage(img, canvas.renderAll.bind(canvas)); + * }); + * @example Stretched backgroundImage #2 - width/height correspond to canvas width/height + * canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), { + * width: canvas.width, + * height: canvas.height, + * // Needed to position backgroundImage at 0/0 + * originX: 'left', + * originY: 'top' + * }); + * @example backgroundImage loaded from cross-origin + * canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), { + * opacity: 0.5, + * angle: 45, + * left: 400, + * top: 400, + * originX: 'left', + * originY: 'top', + * crossOrigin: 'anonymous' + * }); + */ + // TODO: fix stretched examples + setBackgroundImage: function (image, callback, options) { + return this.__setBgOverlayImage('backgroundImage', image, callback, options); + }, + + /** + * Sets {@link fabric.StaticCanvas#overlayColor|foreground color} for this canvas + * @param {(String|fabric.Pattern)} overlayColor Color or pattern to set foreground color to + * @param {Function} callback Callback to invoke when foreground color is set + * @return {fabric.Canvas} thisArg + * @chainable + * @see {@link http://jsfiddle.net/fabricjs/pB55h/|jsFiddle demo} + * @example Normal overlayColor - color value + * canvas.setOverlayColor('rgba(255, 73, 64, 0.6)', canvas.renderAll.bind(canvas)); + * @example fabric.Pattern used as overlayColor + * canvas.setOverlayColor({ + * source: 'http://fabricjs.com/assets/escheresque_ste.png' + * }, canvas.renderAll.bind(canvas)); + * @example fabric.Pattern used as overlayColor with repeat and offset + * canvas.setOverlayColor({ + * source: 'http://fabricjs.com/assets/escheresque_ste.png', + * repeat: 'repeat', + * offsetX: 200, + * offsetY: 100 + * }, canvas.renderAll.bind(canvas)); + */ + setOverlayColor: function(overlayColor, callback) { + return this.__setBgOverlayColor('overlayColor', overlayColor, callback); + }, + + /** + * Sets {@link fabric.StaticCanvas#backgroundColor|background color} for this canvas + * @param {(String|fabric.Pattern)} backgroundColor Color or pattern to set background color to + * @param {Function} callback Callback to invoke when background color is set + * @return {fabric.Canvas} thisArg + * @chainable + * @see {@link http://jsfiddle.net/fabricjs/hXzvk/|jsFiddle demo} + * @example Normal backgroundColor - color value + * canvas.setBackgroundColor('rgba(255, 73, 64, 0.6)', canvas.renderAll.bind(canvas)); + * @example fabric.Pattern used as backgroundColor + * canvas.setBackgroundColor({ + * source: 'http://fabricjs.com/assets/escheresque_ste.png' + * }, canvas.renderAll.bind(canvas)); + * @example fabric.Pattern used as backgroundColor with repeat and offset + * canvas.setBackgroundColor({ + * source: 'http://fabricjs.com/assets/escheresque_ste.png', + * repeat: 'repeat', + * offsetX: 200, + * offsetY: 100 + * }, canvas.renderAll.bind(canvas)); + */ + setBackgroundColor: function(backgroundColor, callback) { + return this.__setBgOverlayColor('backgroundColor', backgroundColor, callback); + }, + + /** + * @private + * @param {String} property Property to set ({@link fabric.StaticCanvas#backgroundImage|backgroundImage} + * or {@link fabric.StaticCanvas#overlayImage|overlayImage}) + * @param {(fabric.Image|String|null)} image fabric.Image instance, URL of an image or null to set background or overlay to + * @param {Function} callback Callback to invoke when image is loaded and set as background or overlay. The first argument is the created image, the second argument is a flag indicating whether an error occurred or not. + * @param {Object} [options] Optional options to set for the {@link fabric.Image|image}. + */ + __setBgOverlayImage: function(property, image, callback, options) { + if (typeof image === 'string') { + fabric.util.loadImage(image, function(img, isError) { + if (img) { + var instance = new fabric.Image(img, options); + this[property] = instance; + instance.canvas = this; + } + callback && callback(img, isError); + }, this, options && options.crossOrigin); + } + else { + options && image.setOptions(options); + this[property] = image; + image && (image.canvas = this); + callback && callback(image, false); + } + + return this; + }, + + /** + * @private + * @param {String} property Property to set ({@link fabric.StaticCanvas#backgroundColor|backgroundColor} + * or {@link fabric.StaticCanvas#overlayColor|overlayColor}) + * @param {(Object|String|null)} color Object with pattern information, color value or null + * @param {Function} [callback] Callback is invoked when color is set + */ + __setBgOverlayColor: function(property, color, callback) { + this[property] = color; + this._initGradient(color, property); + this._initPattern(color, property, callback); + return this; + }, + + /** + * @private + */ + _createCanvasElement: function() { + var element = createCanvasElement(); + if (!element) { + throw CANVAS_INIT_ERROR; + } + if (!element.style) { + element.style = { }; + } + if (typeof element.getContext === 'undefined') { + throw CANVAS_INIT_ERROR; + } + return element; + }, + + /** + * @private + * @param {Object} [options] Options object + */ + _initOptions: function (options) { + var lowerCanvasEl = this.lowerCanvasEl; + this._setOptions(options); + + this.width = this.width || parseInt(lowerCanvasEl.width, 10) || 0; + this.height = this.height || parseInt(lowerCanvasEl.height, 10) || 0; + + if (!this.lowerCanvasEl.style) { + return; + } + + lowerCanvasEl.width = this.width; + lowerCanvasEl.height = this.height; + + lowerCanvasEl.style.width = this.width + 'px'; + lowerCanvasEl.style.height = this.height + 'px'; + + this.viewportTransform = this.viewportTransform.slice(); + }, + + /** + * Creates a bottom canvas + * @private + * @param {HTMLElement} [canvasEl] + */ + _createLowerCanvas: function (canvasEl) { + // canvasEl === 'HTMLCanvasElement' does not work on jsdom/node + if (canvasEl && canvasEl.getContext) { + this.lowerCanvasEl = canvasEl; + } + else { + this.lowerCanvasEl = fabric.util.getById(canvasEl) || this._createCanvasElement(); + } + + fabric.util.addClass(this.lowerCanvasEl, 'lower-canvas'); + this._originalCanvasStyle = this.lowerCanvasEl.style; + if (this.interactive) { + this._applyCanvasStyle(this.lowerCanvasEl); + } + + this.contextContainer = this.lowerCanvasEl.getContext('2d'); + }, + + /** + * Returns canvas width (in px) + * @return {Number} + */ + getWidth: function () { + return this.width; + }, + + /** + * Returns canvas height (in px) + * @return {Number} + */ + getHeight: function () { + return this.height; + }, + + /** + * Sets width of this canvas instance + * @param {Number|String} value Value to set width to + * @param {Object} [options] Options object + * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions + * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions + * @return {fabric.Canvas} instance + * @chainable true + */ + setWidth: function (value, options) { + return this.setDimensions({ width: value }, options); + }, + + /** + * Sets height of this canvas instance + * @param {Number|String} value Value to set height to + * @param {Object} [options] Options object + * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions + * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions + * @return {fabric.Canvas} instance + * @chainable true + */ + setHeight: function (value, options) { + return this.setDimensions({ height: value }, options); + }, + + /** + * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em) + * @param {Object} dimensions Object with width/height properties + * @param {Number|String} [dimensions.width] Width of canvas element + * @param {Number|String} [dimensions.height] Height of canvas element + * @param {Object} [options] Options object + * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions + * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions + * @return {fabric.Canvas} thisArg + * @chainable + */ + setDimensions: function (dimensions, options) { + var cssValue; + + options = options || {}; + + for (var prop in dimensions) { + cssValue = dimensions[prop]; + + if (!options.cssOnly) { + this._setBackstoreDimension(prop, dimensions[prop]); + cssValue += 'px'; + this.hasLostContext = true; + } + + if (!options.backstoreOnly) { + this._setCssDimension(prop, cssValue); + } + } + if (this._isCurrentlyDrawing) { + this.freeDrawingBrush && this.freeDrawingBrush._setBrushStyles(this.contextTop); + } + this._initRetinaScaling(); + this.calcOffset(); + + if (!options.cssOnly) { + this.requestRenderAll(); + } + + return this; + }, + + /** + * Helper for setting width/height + * @private + * @param {String} prop property (width|height) + * @param {Number} value value to set property to + * @return {fabric.Canvas} instance + * @chainable true + */ + _setBackstoreDimension: function (prop, value) { + this.lowerCanvasEl[prop] = value; + + if (this.upperCanvasEl) { + this.upperCanvasEl[prop] = value; + } + + if (this.cacheCanvasEl) { + this.cacheCanvasEl[prop] = value; + } + + this[prop] = value; + + return this; + }, + + /** + * Helper for setting css width/height + * @private + * @param {String} prop property (width|height) + * @param {String} value value to set property to + * @return {fabric.Canvas} instance + * @chainable true + */ + _setCssDimension: function (prop, value) { + this.lowerCanvasEl.style[prop] = value; + + if (this.upperCanvasEl) { + this.upperCanvasEl.style[prop] = value; + } + + if (this.wrapperEl) { + this.wrapperEl.style[prop] = value; + } + + return this; + }, + + /** + * Returns canvas zoom level + * @return {Number} + */ + getZoom: function () { + return this.viewportTransform[0]; + }, + + /** + * Sets viewport transformation of this canvas instance + * @param {Array} vpt a Canvas 2D API transform matrix + * @return {fabric.Canvas} instance + * @chainable true + */ + setViewportTransform: function (vpt) { + var activeObject = this._activeObject, + backgroundObject = this.backgroundImage, + overlayObject = this.overlayImage, + object, i, len; + this.viewportTransform = vpt; + for (i = 0, len = this._objects.length; i < len; i++) { + object = this._objects[i]; + object.group || object.setCoords(true); + } + if (activeObject) { + activeObject.setCoords(); + } + if (backgroundObject) { + backgroundObject.setCoords(true); + } + if (overlayObject) { + overlayObject.setCoords(true); + } + this.calcViewportBoundaries(); + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + + /** + * Sets zoom level of this canvas instance, the zoom centered around point + * meaning that following zoom to point with the same point will have the visual + * effect of the zoom originating from that point. The point won't move. + * It has nothing to do with canvas center or visual center of the viewport. + * @param {fabric.Point} point to zoom with respect to + * @param {Number} value to set zoom to, less than 1 zooms out + * @return {fabric.Canvas} instance + * @chainable true + */ + zoomToPoint: function (point, value) { + // TODO: just change the scale, preserve other transformations + var before = point, vpt = this.viewportTransform.slice(0); + point = transformPoint(point, invertTransform(this.viewportTransform)); + vpt[0] = value; + vpt[3] = value; + var after = transformPoint(point, vpt); + vpt[4] += before.x - after.x; + vpt[5] += before.y - after.y; + return this.setViewportTransform(vpt); + }, + + /** + * Sets zoom level of this canvas instance + * @param {Number} value to set zoom to, less than 1 zooms out + * @return {fabric.Canvas} instance + * @chainable true + */ + setZoom: function (value) { + this.zoomToPoint(new fabric.Point(0, 0), value); + return this; + }, + + /** + * Pan viewport so as to place point at top left corner of canvas + * @param {fabric.Point} point to move to + * @return {fabric.Canvas} instance + * @chainable true + */ + absolutePan: function (point) { + var vpt = this.viewportTransform.slice(0); + vpt[4] = -point.x; + vpt[5] = -point.y; + return this.setViewportTransform(vpt); + }, + + /** + * Pans viewpoint relatively + * @param {fabric.Point} point (position vector) to move by + * @return {fabric.Canvas} instance + * @chainable true + */ + relativePan: function (point) { + return this.absolutePan(new fabric.Point( + -point.x - this.viewportTransform[4], + -point.y - this.viewportTransform[5] + )); + }, + + /** + * Returns <canvas> element corresponding to this instance + * @return {HTMLCanvasElement} + */ + getElement: function () { + return this.lowerCanvasEl; + }, + + /** + * @private + * @param {fabric.Object} obj Object that was added + */ + _onObjectAdded: function(obj) { + this.stateful && obj.setupState(); + obj._set('canvas', this); + obj.setCoords(); + this.fire('object:added', { target: obj }); + obj.fire('added'); + }, + + /** + * @private + * @param {fabric.Object} obj Object that was removed + */ + _onObjectRemoved: function(obj) { + this.fire('object:removed', { target: obj }); + obj.fire('removed'); + delete obj.canvas; + }, + + /** + * Clears specified context of canvas element + * @param {CanvasRenderingContext2D} ctx Context to clear + * @return {fabric.Canvas} thisArg + * @chainable + */ + clearContext: function(ctx) { + ctx.clearRect(0, 0, this.width, this.height); + return this; + }, + + /** + * Returns context of canvas where objects are drawn + * @return {CanvasRenderingContext2D} + */ + getContext: function () { + return this.contextContainer; + }, + + /** + * Clears all contexts (background, main, top) of an instance + * @return {fabric.Canvas} thisArg + * @chainable + */ + clear: function () { + this.remove.apply(this, this.getObjects()); + this.backgroundImage = null; + this.overlayImage = null; + this.backgroundColor = ''; + this.overlayColor = ''; + if (this._hasITextHandlers) { + this.off('mouse:up', this._mouseUpITextHandler); + this._iTextInstances = null; + this._hasITextHandlers = false; + } + this.clearContext(this.contextContainer); + this.fire('canvas:cleared'); + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + + /** + * Renders the canvas + * @return {fabric.Canvas} instance + * @chainable + */ + renderAll: function () { + var canvasToDrawOn = this.contextContainer; + this.renderCanvas(canvasToDrawOn, this._objects); + return this; + }, + + /** + * Function created to be instance bound at initialization + * used in requestAnimationFrame rendering + * Let the fabricJS call it. If you call it manually you could have more + * animationFrame stacking on to of each other + * for an imperative rendering, use canvas.renderAll + * @private + * @return {fabric.Canvas} instance + * @chainable + */ + renderAndReset: function() { + this.isRendering = 0; + this.renderAll(); + }, + + /** + * Append a renderAll request to next animation frame. + * unless one is already in progress, in that case nothing is done + * a boolean flag will avoid appending more. + * @return {fabric.Canvas} instance + * @chainable + */ + requestRenderAll: function () { + if (!this.isRendering) { + this.isRendering = fabric.util.requestAnimFrame(this.renderAndResetBound); + } + return this; + }, + + /** + * Calculate the position of the 4 corner of canvas with current viewportTransform. + * helps to determinate when an object is in the current rendering viewport using + * object absolute coordinates ( aCoords ) + * @return {Object} points.tl + * @chainable + */ + calcViewportBoundaries: function() { + var points = { }, width = this.width, height = this.height, + iVpt = invertTransform(this.viewportTransform); + points.tl = transformPoint({ x: 0, y: 0 }, iVpt); + points.br = transformPoint({ x: width, y: height }, iVpt); + points.tr = new fabric.Point(points.br.x, points.tl.y); + points.bl = new fabric.Point(points.tl.x, points.br.y); + this.vptCoords = points; + return points; + }, + + cancelRequestedRender: function() { + if (this.isRendering) { + fabric.util.cancelAnimFrame(this.isRendering); + this.isRendering = 0; + } + }, + + /** + * Renders background, objects, overlay and controls. + * @param {CanvasRenderingContext2D} ctx + * @param {Array} objects to render + * @return {fabric.Canvas} instance + * @chainable + */ + renderCanvas: function(ctx, objects) { + var v = this.viewportTransform, path = this.clipPath; + this.cancelRequestedRender(); + this.calcViewportBoundaries(); + this.clearContext(ctx); + fabric.util.setImageSmoothing(ctx, this.imageSmoothingEnabled); + this.fire('before:render', { ctx: ctx, }); + this._renderBackground(ctx); + + ctx.save(); + //apply viewport transform once for all rendering process + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + this._renderObjects(ctx, objects); + ctx.restore(); + if (!this.controlsAboveOverlay && this.interactive) { + this.drawControls(ctx); + } + if (path) { + path.canvas = this; + // needed to setup a couple of variables + path.shouldCache(); + path._transformDone = true; + path.renderCache({ forClipping: true }); + this.drawClipPathOnCanvas(ctx); + } + this._renderOverlay(ctx); + if (this.controlsAboveOverlay && this.interactive) { + this.drawControls(ctx); + } + this.fire('after:render', { ctx: ctx, }); + }, + + /** + * Paint the cached clipPath on the lowerCanvasEl + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawClipPathOnCanvas: function(ctx) { + var v = this.viewportTransform, path = this.clipPath; + ctx.save(); + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + // DEBUG: uncomment this line, comment the following + // ctx.globalAlpha = 0.4; + ctx.globalCompositeOperation = 'destination-in'; + path.transform(ctx); + ctx.scale(1 / path.zoomX, 1 / path.zoomY); + ctx.drawImage(path._cacheCanvas, -path.cacheTranslationX, -path.cacheTranslationY); + ctx.restore(); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Array} objects to render + */ + _renderObjects: function(ctx, objects) { + var i, len; + for (i = 0, len = objects.length; i < len; ++i) { + objects[i] && objects[i].render(ctx); + } + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {string} property 'background' or 'overlay' + */ + _renderBackgroundOrOverlay: function(ctx, property) { + var fill = this[property + 'Color'], object = this[property + 'Image'], + v = this.viewportTransform, needsVpt = this[property + 'Vpt']; + if (!fill && !object) { + return; + } + if (fill) { + ctx.save(); + ctx.beginPath(); + ctx.moveTo(0, 0); + ctx.lineTo(this.width, 0); + ctx.lineTo(this.width, this.height); + ctx.lineTo(0, this.height); + ctx.closePath(); + ctx.fillStyle = fill.toLive + ? fill.toLive(ctx, this) + : fill; + if (needsVpt) { + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + } + ctx.transform(1, 0, 0, 1, fill.offsetX || 0, fill.offsetY || 0); + var m = fill.gradientTransform || fill.patternTransform; + m && ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); + ctx.fill(); + ctx.restore(); + } + if (object) { + ctx.save(); + if (needsVpt) { + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + } + object.render(ctx); + ctx.restore(); + } + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderBackground: function(ctx) { + this._renderBackgroundOrOverlay(ctx, 'background'); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderOverlay: function(ctx) { + this._renderBackgroundOrOverlay(ctx, 'overlay'); + }, + + /** + * Returns coordinates of a center of canvas. + * Returned value is an object with top and left properties + * @return {Object} object with "top" and "left" number values + */ + getCenter: function () { + return { + top: this.height / 2, + left: this.width / 2 + }; + }, + + /** + * Centers object horizontally in the canvas + * @param {fabric.Object} object Object to center horizontally + * @return {fabric.Canvas} thisArg + */ + centerObjectH: function (object) { + return this._centerObject(object, new fabric.Point(this.getCenter().left, object.getCenterPoint().y)); + }, + + /** + * Centers object vertically in the canvas + * @param {fabric.Object} object Object to center vertically + * @return {fabric.Canvas} thisArg + * @chainable + */ + centerObjectV: function (object) { + return this._centerObject(object, new fabric.Point(object.getCenterPoint().x, this.getCenter().top)); + }, + + /** + * Centers object vertically and horizontally in the canvas + * @param {fabric.Object} object Object to center vertically and horizontally + * @return {fabric.Canvas} thisArg + * @chainable + */ + centerObject: function(object) { + var center = this.getCenter(); + + return this._centerObject(object, new fabric.Point(center.left, center.top)); + }, + + /** + * Centers object vertically and horizontally in the viewport + * @param {fabric.Object} object Object to center vertically and horizontally + * @return {fabric.Canvas} thisArg + * @chainable + */ + viewportCenterObject: function(object) { + var vpCenter = this.getVpCenter(); + + return this._centerObject(object, vpCenter); + }, + + /** + * Centers object horizontally in the viewport, object.top is unchanged + * @param {fabric.Object} object Object to center vertically and horizontally + * @return {fabric.Canvas} thisArg + * @chainable + */ + viewportCenterObjectH: function(object) { + var vpCenter = this.getVpCenter(); + this._centerObject(object, new fabric.Point(vpCenter.x, object.getCenterPoint().y)); + return this; + }, + + /** + * Centers object Vertically in the viewport, object.top is unchanged + * @param {fabric.Object} object Object to center vertically and horizontally + * @return {fabric.Canvas} thisArg + * @chainable + */ + viewportCenterObjectV: function(object) { + var vpCenter = this.getVpCenter(); + + return this._centerObject(object, new fabric.Point(object.getCenterPoint().x, vpCenter.y)); + }, + + /** + * Calculate the point in canvas that correspond to the center of actual viewport. + * @return {fabric.Point} vpCenter, viewport center + * @chainable + */ + getVpCenter: function() { + var center = this.getCenter(), + iVpt = invertTransform(this.viewportTransform); + return transformPoint({ x: center.left, y: center.top }, iVpt); + }, + + /** + * @private + * @param {fabric.Object} object Object to center + * @param {fabric.Point} center Center point + * @return {fabric.Canvas} thisArg + * @chainable + */ + _centerObject: function(object, center) { + object.setPositionByOrigin(center, 'center', 'center'); + object.setCoords(); + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + + /** + * Returns dataless JSON representation of canvas + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {String} json string + */ + toDatalessJSON: function (propertiesToInclude) { + return this.toDatalessObject(propertiesToInclude); + }, + + /** + * Returns object representation of canvas + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function (propertiesToInclude) { + return this._toObjectMethod('toObject', propertiesToInclude); + }, + + /** + * Returns dataless object representation of canvas + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toDatalessObject: function (propertiesToInclude) { + return this._toObjectMethod('toDatalessObject', propertiesToInclude); + }, + + /** + * @private + */ + _toObjectMethod: function (methodName, propertiesToInclude) { + + var clipPath = this.clipPath, data = { + version: fabric.version, + objects: this._toObjects(methodName, propertiesToInclude), + }; + if (clipPath && !clipPath.excludeFromExport) { + data.clipPath = this._toObject(this.clipPath, methodName, propertiesToInclude); + } + extend(data, this.__serializeBgOverlay(methodName, propertiesToInclude)); + + fabric.util.populateWithProperties(this, data, propertiesToInclude); + + return data; + }, + + /** + * @private + */ + _toObjects: function(methodName, propertiesToInclude) { + return this._objects.filter(function(object) { + return !object.excludeFromExport; + }).map(function(instance) { + return this._toObject(instance, methodName, propertiesToInclude); + }, this); + }, + + /** + * @private + */ + _toObject: function(instance, methodName, propertiesToInclude) { + var originalValue; + + if (!this.includeDefaultValues) { + originalValue = instance.includeDefaultValues; + instance.includeDefaultValues = false; + } + + var object = instance[methodName](propertiesToInclude); + if (!this.includeDefaultValues) { + instance.includeDefaultValues = originalValue; + } + return object; + }, + + /** + * @private + */ + __serializeBgOverlay: function(methodName, propertiesToInclude) { + var data = {}, bgImage = this.backgroundImage, overlayImage = this.overlayImage, + bgColor = this.backgroundColor, overlayColor = this.overlayColor; + + if (bgColor && bgColor.toObject) { + if (!bgColor.excludeFromExport) { + data.background = bgColor.toObject(propertiesToInclude); + } + } + else if (bgColor) { + data.background = bgColor; + } + + if (overlayColor && overlayColor.toObject) { + if (!overlayColor.excludeFromExport) { + data.overlay = overlayColor.toObject(propertiesToInclude); + } + } + else if (overlayColor) { + data.overlay = overlayColor; + } + + if (bgImage && !bgImage.excludeFromExport) { + data.backgroundImage = this._toObject(bgImage, methodName, propertiesToInclude); + } + if (overlayImage && !overlayImage.excludeFromExport) { + data.overlayImage = this._toObject(overlayImage, methodName, propertiesToInclude); + } + + return data; + }, + + /* _TO_SVG_START_ */ + /** + * When true, getSvgTransform() will apply the StaticCanvas.viewportTransform to the SVG transformation. When true, + * a zoomed canvas will then produce zoomed SVG output. + * @type Boolean + * @default + */ + svgViewportTransformation: true, + + /** + * Returns SVG representation of canvas + * @function + * @param {Object} [options] Options object for SVG output + * @param {Boolean} [options.suppressPreamble=false] If true xml tag is not included + * @param {Object} [options.viewBox] SVG viewbox object + * @param {Number} [options.viewBox.x] x-coordinate of viewbox + * @param {Number} [options.viewBox.y] y-coordinate of viewbox + * @param {Number} [options.viewBox.width] Width of viewbox + * @param {Number} [options.viewBox.height] Height of viewbox + * @param {String} [options.encoding=UTF-8] Encoding of SVG output + * @param {String} [options.width] desired width of svg with or without units + * @param {String} [options.height] desired height of svg with or without units + * @param {Function} [reviver] Method for further parsing of svg elements, called after each fabric object converted into svg representation. + * @return {String} SVG string + * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization} + * @see {@link http://jsfiddle.net/fabricjs/jQ3ZZ/|jsFiddle demo} + * @example Normal SVG output + * var svg = canvas.toSVG(); + * @example SVG output without preamble (without <?xml ../>) + * var svg = canvas.toSVG({suppressPreamble: true}); + * @example SVG output with viewBox attribute + * var svg = canvas.toSVG({ + * viewBox: { + * x: 100, + * y: 100, + * width: 200, + * height: 300 + * } + * }); + * @example SVG output with different encoding (default: UTF-8) + * var svg = canvas.toSVG({encoding: 'ISO-8859-1'}); + * @example Modify SVG output with reviver function + * var svg = canvas.toSVG(null, function(svg) { + * return svg.replace('stroke-dasharray: ; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; ', ''); + * }); + */ + toSVG: function(options, reviver) { + options || (options = { }); + options.reviver = reviver; + var markup = []; + + this._setSVGPreamble(markup, options); + this._setSVGHeader(markup, options); + if (this.clipPath) { + markup.push('\n'); + } + this._setSVGBgOverlayColor(markup, 'background'); + this._setSVGBgOverlayImage(markup, 'backgroundImage', reviver); + this._setSVGObjects(markup, reviver); + if (this.clipPath) { + markup.push('\n'); + } + this._setSVGBgOverlayColor(markup, 'overlay'); + this._setSVGBgOverlayImage(markup, 'overlayImage', reviver); + + markup.push(''); + + return markup.join(''); + }, + + /** + * @private + */ + _setSVGPreamble: function(markup, options) { + if (options.suppressPreamble) { + return; + } + markup.push( + '\n', + '\n' + ); + }, + + /** + * @private + */ + _setSVGHeader: function(markup, options) { + var width = options.width || this.width, + height = options.height || this.height, + vpt, viewBox = 'viewBox="0 0 ' + this.width + ' ' + this.height + '" ', + NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; + + if (options.viewBox) { + viewBox = 'viewBox="' + + options.viewBox.x + ' ' + + options.viewBox.y + ' ' + + options.viewBox.width + ' ' + + options.viewBox.height + '" '; + } + else { + if (this.svgViewportTransformation) { + vpt = this.viewportTransform; + viewBox = 'viewBox="' + + toFixed(-vpt[4] / vpt[0], NUM_FRACTION_DIGITS) + ' ' + + toFixed(-vpt[5] / vpt[3], NUM_FRACTION_DIGITS) + ' ' + + toFixed(this.width / vpt[0], NUM_FRACTION_DIGITS) + ' ' + + toFixed(this.height / vpt[3], NUM_FRACTION_DIGITS) + '" '; + } + } + + markup.push( + '\n', + 'Created with Fabric.js ', fabric.version, '\n', + '\n', + this.createSVGFontFacesMarkup(), + this.createSVGRefElementsMarkup(), + this.createSVGClipPathMarkup(options), + '\n' + ); + }, + + createSVGClipPathMarkup: function(options) { + var clipPath = this.clipPath; + if (clipPath) { + clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++; + return '\n' + + this.clipPath.toClipPathSVG(options.reviver) + + '\n'; + } + return ''; + }, + + /** + * Creates markup containing SVG referenced elements like patterns, gradients etc. + * @return {String} + */ + createSVGRefElementsMarkup: function() { + var _this = this, + markup = ['background', 'overlay'].map(function(prop) { + var fill = _this[prop + 'Color']; + if (fill && fill.toLive) { + var shouldTransform = _this[prop + 'Vpt'], vpt = _this.viewportTransform, + object = { + width: _this.width / (shouldTransform ? vpt[0] : 1), + height: _this.height / (shouldTransform ? vpt[3] : 1) + }; + return fill.toSVG( + object, + { additionalTransform: shouldTransform ? fabric.util.matrixToSVG(vpt) : '' } + ); + } + }); + return markup.join(''); + }, + + /** + * Creates markup containing SVG font faces, + * font URLs for font faces must be collected by developers + * and are not extracted from the DOM by fabricjs + * @param {Array} objects Array of fabric objects + * @return {String} + */ + createSVGFontFacesMarkup: function() { + var markup = '', fontList = { }, obj, fontFamily, + style, row, rowIndex, _char, charIndex, i, len, + fontPaths = fabric.fontPaths, objects = []; + + this._objects.forEach(function add(object) { + objects.push(object); + if (object._objects) { + object._objects.forEach(add); + } + }); + + for (i = 0, len = objects.length; i < len; i++) { + obj = objects[i]; + fontFamily = obj.fontFamily; + if (obj.type.indexOf('text') === -1 || fontList[fontFamily] || !fontPaths[fontFamily]) { + continue; + } + fontList[fontFamily] = true; + if (!obj.styles) { + continue; + } + style = obj.styles; + for (rowIndex in style) { + row = style[rowIndex]; + for (charIndex in row) { + _char = row[charIndex]; + fontFamily = _char.fontFamily; + if (!fontList[fontFamily] && fontPaths[fontFamily]) { + fontList[fontFamily] = true; + } + } + } + } + + for (var j in fontList) { + markup += [ + '\t\t@font-face {\n', + '\t\t\tfont-family: \'', j, '\';\n', + '\t\t\tsrc: url(\'', fontPaths[j], '\');\n', + '\t\t}\n' + ].join(''); + } + + if (markup) { + markup = [ + '\t\n' + ].join(''); + } + + return markup; + }, + + /** + * @private + */ + _setSVGObjects: function(markup, reviver) { + var instance, i, len, objects = this._objects; + for (i = 0, len = objects.length; i < len; i++) { + instance = objects[i]; + if (instance.excludeFromExport) { + continue; + } + this._setSVGObject(markup, instance, reviver); + } + }, + + /** + * @private + */ + _setSVGObject: function(markup, instance, reviver) { + markup.push(instance.toSVG(reviver)); + }, + + /** + * @private + */ + _setSVGBgOverlayImage: function(markup, property, reviver) { + if (this[property] && !this[property].excludeFromExport && this[property].toSVG) { + markup.push(this[property].toSVG(reviver)); + } + }, + + /** + * @private + */ + _setSVGBgOverlayColor: function(markup, property) { + var filler = this[property + 'Color'], vpt = this.viewportTransform, finalWidth = this.width, + finalHeight = this.height; + if (!filler) { + return; + } + if (filler.toLive) { + var repeat = filler.repeat, iVpt = fabric.util.invertTransform(vpt), shouldInvert = this[property + 'Vpt'], + additionalTransform = shouldInvert ? fabric.util.matrixToSVG(iVpt) : ''; + markup.push( + '\n' + ); + } + else { + markup.push( + '\n' + ); + } + }, + /* _TO_SVG_END_ */ + + /** + * Moves an object or the objects of a multiple selection + * to the bottom of the stack of drawn objects + * @param {fabric.Object} object Object to send to back + * @return {fabric.Canvas} thisArg + * @chainable + */ + sendToBack: function (object) { + if (!object) { + return this; + } + var activeSelection = this._activeObject, + i, obj, objs; + if (object === activeSelection && object.type === 'activeSelection') { + objs = activeSelection._objects; + for (i = objs.length; i--;) { + obj = objs[i]; + removeFromArray(this._objects, obj); + this._objects.unshift(obj); + } + } + else { + removeFromArray(this._objects, object); + this._objects.unshift(object); + } + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + + /** + * Moves an object or the objects of a multiple selection + * to the top of the stack of drawn objects + * @param {fabric.Object} object Object to send + * @return {fabric.Canvas} thisArg + * @chainable + */ + bringToFront: function (object) { + if (!object) { + return this; + } + var activeSelection = this._activeObject, + i, obj, objs; + if (object === activeSelection && object.type === 'activeSelection') { + objs = activeSelection._objects; + for (i = 0; i < objs.length; i++) { + obj = objs[i]; + removeFromArray(this._objects, obj); + this._objects.push(obj); + } + } + else { + removeFromArray(this._objects, object); + this._objects.push(object); + } + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + + /** + * Moves an object or a selection down in stack of drawn objects + * An optional parameter, intersecting allows to move the object in behind + * the first intersecting object. Where intersection is calculated with + * bounding box. If no intersection is found, there will not be change in the + * stack. + * @param {fabric.Object} object Object to send + * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object + * @return {fabric.Canvas} thisArg + * @chainable + */ + sendBackwards: function (object, intersecting) { + if (!object) { + return this; + } + var activeSelection = this._activeObject, + i, obj, idx, newIdx, objs, objsMoved = 0; + + if (object === activeSelection && object.type === 'activeSelection') { + objs = activeSelection._objects; + for (i = 0; i < objs.length; i++) { + obj = objs[i]; + idx = this._objects.indexOf(obj); + if (idx > 0 + objsMoved) { + newIdx = idx - 1; + removeFromArray(this._objects, obj); + this._objects.splice(newIdx, 0, obj); + } + objsMoved++; + } + } + else { + idx = this._objects.indexOf(object); + if (idx !== 0) { + // if object is not on the bottom of stack + newIdx = this._findNewLowerIndex(object, idx, intersecting); + removeFromArray(this._objects, object); + this._objects.splice(newIdx, 0, object); + } + } + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + + /** + * @private + */ + _findNewLowerIndex: function(object, idx, intersecting) { + var newIdx, i; + + if (intersecting) { + newIdx = idx; + + // traverse down the stack looking for the nearest intersecting object + for (i = idx - 1; i >= 0; --i) { + + var isIntersecting = object.intersectsWithObject(this._objects[i]) || + object.isContainedWithinObject(this._objects[i]) || + this._objects[i].isContainedWithinObject(object); + + if (isIntersecting) { + newIdx = i; + break; + } + } + } + else { + newIdx = idx - 1; + } + + return newIdx; + }, + + /** + * Moves an object or a selection up in stack of drawn objects + * An optional parameter, intersecting allows to move the object in front + * of the first intersecting object. Where intersection is calculated with + * bounding box. If no intersection is found, there will not be change in the + * stack. + * @param {fabric.Object} object Object to send + * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object + * @return {fabric.Canvas} thisArg + * @chainable + */ + bringForward: function (object, intersecting) { + if (!object) { + return this; + } + var activeSelection = this._activeObject, + i, obj, idx, newIdx, objs, objsMoved = 0; + + if (object === activeSelection && object.type === 'activeSelection') { + objs = activeSelection._objects; + for (i = objs.length; i--;) { + obj = objs[i]; + idx = this._objects.indexOf(obj); + if (idx < this._objects.length - 1 - objsMoved) { + newIdx = idx + 1; + removeFromArray(this._objects, obj); + this._objects.splice(newIdx, 0, obj); + } + objsMoved++; + } + } + else { + idx = this._objects.indexOf(object); + if (idx !== this._objects.length - 1) { + // if object is not on top of stack (last item in an array) + newIdx = this._findNewUpperIndex(object, idx, intersecting); + removeFromArray(this._objects, object); + this._objects.splice(newIdx, 0, object); + } + } + this.renderOnAddRemove && this.requestRenderAll(); + return this; + }, + + /** + * @private + */ + _findNewUpperIndex: function(object, idx, intersecting) { + var newIdx, i, len; + + if (intersecting) { + newIdx = idx; + + // traverse up the stack looking for the nearest intersecting object + for (i = idx + 1, len = this._objects.length; i < len; ++i) { + + var isIntersecting = object.intersectsWithObject(this._objects[i]) || + object.isContainedWithinObject(this._objects[i]) || + this._objects[i].isContainedWithinObject(object); + + if (isIntersecting) { + newIdx = i; + break; + } + } + } + else { + newIdx = idx + 1; + } + + return newIdx; + }, + + /** + * Moves an object to specified level in stack of drawn objects + * @param {fabric.Object} object Object to send + * @param {Number} index Position to move to + * @return {fabric.Canvas} thisArg + * @chainable + */ + moveTo: function (object, index) { + removeFromArray(this._objects, object); + this._objects.splice(index, 0, object); + return this.renderOnAddRemove && this.requestRenderAll(); + }, + + /** + * Clears a canvas element and dispose objects + * @return {fabric.Canvas} thisArg + * @chainable + */ + dispose: function () { + // cancel eventually ongoing renders + if (this.isRendering) { + fabric.util.cancelAnimFrame(this.isRendering); + this.isRendering = 0; + } + this.forEachObject(function(object) { + object.dispose && object.dispose(); + }); + this._objects = []; + if (this.backgroundImage && this.backgroundImage.dispose) { + this.backgroundImage.dispose(); + } + this.backgroundImage = null; + if (this.overlayImage && this.overlayImage.dispose) { + this.overlayImage.dispose(); + } + this.overlayImage = null; + this._iTextInstances = null; + this.contextContainer = null; + // restore canvas style + this.lowerCanvasEl.classList.remove('lower-canvas'); + fabric.util.setStyle(this.lowerCanvasEl, this._originalCanvasStyle); + delete this._originalCanvasStyle; + // restore canvas size to original size in case retina scaling was applied + this.lowerCanvasEl.setAttribute('width', this.width); + this.lowerCanvasEl.setAttribute('height', this.height); + fabric.util.cleanUpJsdomNode(this.lowerCanvasEl); + this.lowerCanvasEl = undefined; + return this; + }, + + /** + * Returns a string representation of an instance + * @return {String} string representation of an instance + */ + toString: function () { + return '#'; + } + }); + + extend(fabric.StaticCanvas.prototype, fabric.Observable); + extend(fabric.StaticCanvas.prototype, fabric.Collection); + extend(fabric.StaticCanvas.prototype, fabric.DataURLExporter); + + extend(fabric.StaticCanvas, /** @lends fabric.StaticCanvas */ { + + /** + * @static + * @type String + * @default + */ + EMPTY_JSON: '{"objects": [], "background": "white"}', + + /** + * Provides a way to check support of some of the canvas methods + * (either those of HTMLCanvasElement itself, or rendering context) + * + * @param {String} methodName Method to check support for; + * Could be one of "setLineDash" + * @return {Boolean | null} `true` if method is supported (or at least exists), + * `null` if canvas element or context can not be initialized + */ + supports: function (methodName) { + var el = createCanvasElement(); + + if (!el || !el.getContext) { + return null; + } + + var ctx = el.getContext('2d'); + if (!ctx) { + return null; + } + + switch (methodName) { + + case 'setLineDash': + return typeof ctx.setLineDash !== 'undefined'; + + default: + return null; + } + } + }); + + /** + * Returns Object representation of canvas + * this alias is provided because if you call JSON.stringify on an instance, + * the toJSON object will be invoked if it exists. + * Having a toJSON method means you can do JSON.stringify(myCanvas) + * @function + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} JSON compatible object + * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization} + * @see {@link http://jsfiddle.net/fabricjs/pec86/|jsFiddle demo} + * @example JSON without additional properties + * var json = canvas.toJSON(); + * @example JSON with additional properties included + * var json = canvas.toJSON(['lockMovementX', 'lockMovementY', 'lockRotation', 'lockScalingX', 'lockScalingY']); + * @example JSON without default values + * canvas.includeDefaultValues = false; + * var json = canvas.toJSON(); + */ + fabric.StaticCanvas.prototype.toJSON = fabric.StaticCanvas.prototype.toObject; + + if (fabric.isLikelyNode) { + fabric.StaticCanvas.prototype.createPNGStream = function() { + var impl = getNodeCanvas(this.lowerCanvasEl); + return impl && impl.createPNGStream(); + }; + fabric.StaticCanvas.prototype.createJPEGStream = function(opts) { + var impl = getNodeCanvas(this.lowerCanvasEl); + return impl && impl.createJPEGStream(opts); + }; + } +})(); + + +/** + * BaseBrush class + * @class fabric.BaseBrush + * @see {@link http://fabricjs.com/freedrawing|Freedrawing demo} + */ +fabric.BaseBrush = fabric.util.createClass(/** @lends fabric.BaseBrush.prototype */ { + + /** + * Color of a brush + * @type String + * @default + */ + color: 'rgb(0, 0, 0)', + + /** + * Width of a brush, has to be a Number, no string literals + * @type Number + * @default + */ + width: 1, + + /** + * Shadow object representing shadow of this shape. + * Backwards incompatibility note: This property replaces "shadowColor" (String), "shadowOffsetX" (Number), + * "shadowOffsetY" (Number) and "shadowBlur" (Number) since v1.2.12 + * @type fabric.Shadow + * @default + */ + shadow: null, + + /** + * Line endings style of a brush (one of "butt", "round", "square") + * @type String + * @default + */ + strokeLineCap: 'round', + + /** + * Corner style of a brush (one of "bevel", "round", "miter") + * @type String + * @default + */ + strokeLineJoin: 'round', + + /** + * Maximum miter length (used for strokeLineJoin = "miter") of a brush's + * @type Number + * @default + */ + strokeMiterLimit: 10, + + /** + * Stroke Dash Array. + * @type Array + * @default + */ + strokeDashArray: null, + + /** + * When `true`, the free drawing is limited to the whiteboard size. Default to false. + * @type Boolean + * @default false + */ + + limitedToCanvasSize: false, + + + /** + * Sets brush styles + * @private + * @param {CanvasRenderingContext2D} ctx + */ + _setBrushStyles: function (ctx) { + ctx.strokeStyle = this.color; + ctx.lineWidth = this.width; + ctx.lineCap = this.strokeLineCap; + ctx.miterLimit = this.strokeMiterLimit; + ctx.lineJoin = this.strokeLineJoin; + ctx.setLineDash(this.strokeDashArray || []); + }, + + /** + * Sets the transformation on given context + * @param {RenderingContext2d} ctx context to render on + * @private + */ + _saveAndTransform: function(ctx) { + var v = this.canvas.viewportTransform; + ctx.save(); + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + }, + + /** + * Sets brush shadow styles + * @private + */ + _setShadow: function() { + if (!this.shadow) { + return; + } + + var canvas = this.canvas, + shadow = this.shadow, + ctx = canvas.contextTop, + zoom = canvas.getZoom(); + if (canvas && canvas._isRetinaScaling()) { + zoom *= fabric.devicePixelRatio; + } + + ctx.shadowColor = shadow.color; + ctx.shadowBlur = shadow.blur * zoom; + ctx.shadowOffsetX = shadow.offsetX * zoom; + ctx.shadowOffsetY = shadow.offsetY * zoom; + }, + + needsFullRender: function() { + var color = new fabric.Color(this.color); + return color.getAlpha() < 1 || !!this.shadow; + }, + + /** + * Removes brush shadow styles + * @private + */ + _resetShadow: function() { + var ctx = this.canvas.contextTop; + + ctx.shadowColor = ''; + ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0; + }, + + /** + * Check is pointer is outside canvas boundaries + * @param {Object} pointer + * @private + */ + _isOutSideCanvas: function(pointer) { + return pointer.x < 0 || pointer.x > this.canvas.getWidth() || pointer.y < 0 || pointer.y > this.canvas.getHeight(); + } +}); + + +(function() { + /** + * PencilBrush class + * @class fabric.PencilBrush + * @extends fabric.BaseBrush + */ + fabric.PencilBrush = fabric.util.createClass(fabric.BaseBrush, /** @lends fabric.PencilBrush.prototype */ { + + /** + * Discard points that are less than `decimate` pixel distant from each other + * @type Number + * @default 0.4 + */ + decimate: 0.4, + + /** + * Draws a straight line between last recorded point to current pointer + * Used for `shift` functionality + * + * @type boolean + * @default false + */ + drawStraightLine: false, + + /** + * The event modifier key that makes the brush draw a straight line. + * If `null` or 'none' or any other string that is not a modifier key the feature is disabled. + * @type {'altKey' | 'shiftKey' | 'ctrlKey' | 'none' | undefined | null} + */ + straightLineKey: 'shiftKey', + + /** + * Constructor + * @param {fabric.Canvas} canvas + * @return {fabric.PencilBrush} Instance of a pencil brush + */ + initialize: function(canvas) { + this.canvas = canvas; + this._points = []; + }, + + needsFullRender: function () { + return this.callSuper('needsFullRender') || this._hasStraightLine; + }, + + /** + * Invoked inside on mouse down and mouse move + * @param {Object} pointer + */ + _drawSegment: function (ctx, p1, p2) { + var midPoint = p1.midPointFrom(p2); + ctx.quadraticCurveTo(p1.x, p1.y, midPoint.x, midPoint.y); + return midPoint; + }, + + /** + * Invoked on mouse down + * @param {Object} pointer + */ + onMouseDown: function(pointer, options) { + if (!this.canvas._isMainEvent(options.e)) { + return; + } + this.drawStraightLine = options.e[this.straightLineKey]; + this._prepareForDrawing(pointer); + // capture coordinates immediately + // this allows to draw dots (when movement never occurs) + this._captureDrawingPath(pointer); + this._render(); + }, + + /** + * Invoked on mouse move + * @param {Object} pointer + */ + onMouseMove: function(pointer, options) { + if (!this.canvas._isMainEvent(options.e)) { + return; + } + this.drawStraightLine = options.e[this.straightLineKey]; + if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { + return; + } + if (this._captureDrawingPath(pointer) && this._points.length > 1) { + if (this.needsFullRender()) { + // redraw curve + // clear top canvas + this.canvas.clearContext(this.canvas.contextTop); + this._render(); + } + else { + var points = this._points, length = points.length, ctx = this.canvas.contextTop; + // draw the curve update + this._saveAndTransform(ctx); + if (this.oldEnd) { + ctx.beginPath(); + ctx.moveTo(this.oldEnd.x, this.oldEnd.y); + } + this.oldEnd = this._drawSegment(ctx, points[length - 2], points[length - 1], true); + ctx.stroke(); + ctx.restore(); + } + } + }, + + /** + * Invoked on mouse up + */ + onMouseUp: function(options) { + if (!this.canvas._isMainEvent(options.e)) { + return true; + } + this.drawStraightLine = false; + this.oldEnd = undefined; + this._finalizeAndAddPath(); + return false; + }, + + /** + * @private + * @param {Object} pointer Actual mouse position related to the canvas. + */ + _prepareForDrawing: function(pointer) { + + var p = new fabric.Point(pointer.x, pointer.y); + + this._reset(); + this._addPoint(p); + this.canvas.contextTop.moveTo(p.x, p.y); + }, + + /** + * @private + * @param {fabric.Point} point Point to be added to points array + */ + _addPoint: function(point) { + if (this._points.length > 1 && point.eq(this._points[this._points.length - 1])) { + return false; + } + if (this.drawStraightLine && this._points.length > 1) { + this._hasStraightLine = true; + this._points.pop(); + } + this._points.push(point); + return true; + }, + + /** + * Clear points array and set contextTop canvas style. + * @private + */ + _reset: function() { + this._points = []; + this._setBrushStyles(this.canvas.contextTop); + this._setShadow(); + this._hasStraightLine = false; + }, + + /** + * @private + * @param {Object} pointer Actual mouse position related to the canvas. + */ + _captureDrawingPath: function(pointer) { + var pointerPoint = new fabric.Point(pointer.x, pointer.y); + return this._addPoint(pointerPoint); + }, + + /** + * Draw a smooth path on the topCanvas using quadraticCurveTo + * @private + * @param {CanvasRenderingContext2D} [ctx] + */ + _render: function(ctx) { + var i, len, + p1 = this._points[0], + p2 = this._points[1]; + ctx = ctx || this.canvas.contextTop; + this._saveAndTransform(ctx); + ctx.beginPath(); + //if we only have 2 points in the path and they are the same + //it means that the user only clicked the canvas without moving the mouse + //then we should be drawing a dot. A path isn't drawn between two identical dots + //that's why we set them apart a bit + if (this._points.length === 2 && p1.x === p2.x && p1.y === p2.y) { + var width = this.width / 1000; + p1 = new fabric.Point(p1.x, p1.y); + p2 = new fabric.Point(p2.x, p2.y); + p1.x -= width; + p2.x += width; + } + ctx.moveTo(p1.x, p1.y); + + for (i = 1, len = this._points.length; i < len; i++) { + // we pick the point between pi + 1 & pi + 2 as the + // end point and p1 as our control point. + this._drawSegment(ctx, p1, p2); + p1 = this._points[i]; + p2 = this._points[i + 1]; + } + // Draw last line as a straight line while + // we wait for the next point to be able to calculate + // the bezier control point + ctx.lineTo(p1.x, p1.y); + ctx.stroke(); + ctx.restore(); + }, + + /** + * Converts points to SVG path + * @param {Array} points Array of points + * @return {(string|number)[][]} SVG path commands + */ + convertPointsToSVGPath: function (points) { + var correction = this.width / 1000; + return fabric.util.getSmoothPathFromPoints(points, correction); + }, + + /** + * @private + * @param {(string|number)[][]} pathData SVG path commands + * @returns {boolean} + */ + _isEmptySVGPath: function (pathData) { + var pathString = fabric.util.joinPath(pathData); + return pathString === 'M 0 0 Q 0 0 0 0 L 0 0'; + }, + + /** + * Creates fabric.Path object to add on canvas + * @param {(string|number)[][]} pathData Path data + * @return {fabric.Path} Path to add on canvas + */ + createPath: function(pathData) { + var path = new fabric.Path(pathData, { + fill: null, + stroke: this.color, + strokeWidth: this.width, + strokeLineCap: this.strokeLineCap, + strokeMiterLimit: this.strokeMiterLimit, + strokeLineJoin: this.strokeLineJoin, + strokeDashArray: this.strokeDashArray, + }); + if (this.shadow) { + this.shadow.affectStroke = true; + path.shadow = new fabric.Shadow(this.shadow); + } + + return path; + }, + + /** + * Decimate points array with the decimate value + */ + decimatePoints: function(points, distance) { + if (points.length <= 2) { + return points; + } + var zoom = this.canvas.getZoom(), adjustedDistance = Math.pow(distance / zoom, 2), + i, l = points.length - 1, lastPoint = points[0], newPoints = [lastPoint], + cDistance; + for (i = 1; i < l - 1; i++) { + cDistance = Math.pow(lastPoint.x - points[i].x, 2) + Math.pow(lastPoint.y - points[i].y, 2); + if (cDistance >= adjustedDistance) { + lastPoint = points[i]; + newPoints.push(lastPoint); + } + } + /** + * Add the last point from the original line to the end of the array. + * This ensures decimate doesn't delete the last point on the line, and ensures the line is > 1 point. + */ + newPoints.push(points[l]); + return newPoints; + }, + + /** + * On mouseup after drawing the path on contextTop canvas + * we use the points captured to create an new fabric path object + * and add it to the fabric canvas. + */ + _finalizeAndAddPath: function() { + var ctx = this.canvas.contextTop; + ctx.closePath(); + if (this.decimate) { + this._points = this.decimatePoints(this._points, this.decimate); + } + var pathData = this.convertPointsToSVGPath(this._points); + if (this._isEmptySVGPath(pathData)) { + // do not create 0 width/height paths, as they are + // rendered inconsistently across browsers + // Firefox 4, for example, renders a dot, + // whereas Chrome 10 renders nothing + this.canvas.requestRenderAll(); + return; + } + + var path = this.createPath(pathData); + this.canvas.clearContext(this.canvas.contextTop); + this.canvas.fire('before:path:created', { path: path }); + this.canvas.add(path); + this.canvas.requestRenderAll(); + path.setCoords(); + this._resetShadow(); + + + // fire event 'path' created + this.canvas.fire('path:created', { path: path }); + } + }); +})(); + + +/** + * CircleBrush class + * @class fabric.CircleBrush + */ +fabric.CircleBrush = fabric.util.createClass(fabric.BaseBrush, /** @lends fabric.CircleBrush.prototype */ { + + /** + * Width of a brush + * @type Number + * @default + */ + width: 10, + + /** + * Constructor + * @param {fabric.Canvas} canvas + * @return {fabric.CircleBrush} Instance of a circle brush + */ + initialize: function(canvas) { + this.canvas = canvas; + this.points = []; + }, + + /** + * Invoked inside on mouse down and mouse move + * @param {Object} pointer + */ + drawDot: function(pointer) { + var point = this.addPoint(pointer), + ctx = this.canvas.contextTop; + this._saveAndTransform(ctx); + this.dot(ctx, point); + ctx.restore(); + }, + + dot: function(ctx, point) { + ctx.fillStyle = point.fill; + ctx.beginPath(); + ctx.arc(point.x, point.y, point.radius, 0, Math.PI * 2, false); + ctx.closePath(); + ctx.fill(); + }, + + /** + * Invoked on mouse down + */ + onMouseDown: function(pointer) { + this.points.length = 0; + this.canvas.clearContext(this.canvas.contextTop); + this._setShadow(); + this.drawDot(pointer); + }, + + /** + * Render the full state of the brush + * @private + */ + _render: function() { + var ctx = this.canvas.contextTop, i, len, + points = this.points; + this._saveAndTransform(ctx); + for (i = 0, len = points.length; i < len; i++) { + this.dot(ctx, points[i]); + } + ctx.restore(); + }, + + /** + * Invoked on mouse move + * @param {Object} pointer + */ + onMouseMove: function(pointer) { + if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { + return; + } + if (this.needsFullRender()) { + this.canvas.clearContext(this.canvas.contextTop); + this.addPoint(pointer); + this._render(); + } + else { + this.drawDot(pointer); + } + }, + + /** + * Invoked on mouse up + */ + onMouseUp: function() { + var originalRenderOnAddRemove = this.canvas.renderOnAddRemove, i, len; + this.canvas.renderOnAddRemove = false; + + var circles = []; + + for (i = 0, len = this.points.length; i < len; i++) { + var point = this.points[i], + circle = new fabric.Circle({ + radius: point.radius, + left: point.x, + top: point.y, + originX: 'center', + originY: 'center', + fill: point.fill + }); + + this.shadow && (circle.shadow = new fabric.Shadow(this.shadow)); + + circles.push(circle); + } + var group = new fabric.Group(circles); + group.canvas = this.canvas; + + this.canvas.fire('before:path:created', { path: group }); + this.canvas.add(group); + this.canvas.fire('path:created', { path: group }); + + this.canvas.clearContext(this.canvas.contextTop); + this._resetShadow(); + this.canvas.renderOnAddRemove = originalRenderOnAddRemove; + this.canvas.requestRenderAll(); + }, + + /** + * @param {Object} pointer + * @return {fabric.Point} Just added pointer point + */ + addPoint: function(pointer) { + var pointerPoint = new fabric.Point(pointer.x, pointer.y), + + circleRadius = fabric.util.getRandomInt( + Math.max(0, this.width - 20), this.width + 20) / 2, + + circleColor = new fabric.Color(this.color) + .setAlpha(fabric.util.getRandomInt(0, 100) / 100) + .toRgba(); + + pointerPoint.radius = circleRadius; + pointerPoint.fill = circleColor; + + this.points.push(pointerPoint); + + return pointerPoint; + } +}); + + +/** + * SprayBrush class + * @class fabric.SprayBrush + */ +fabric.SprayBrush = fabric.util.createClass( fabric.BaseBrush, /** @lends fabric.SprayBrush.prototype */ { + + /** + * Width of a spray + * @type Number + * @default + */ + width: 10, + + /** + * Density of a spray (number of dots per chunk) + * @type Number + * @default + */ + density: 20, + + /** + * Width of spray dots + * @type Number + * @default + */ + dotWidth: 1, + + /** + * Width variance of spray dots + * @type Number + * @default + */ + dotWidthVariance: 1, + + /** + * Whether opacity of a dot should be random + * @type Boolean + * @default + */ + randomOpacity: false, + + /** + * Whether overlapping dots (rectangles) should be removed (for performance reasons) + * @type Boolean + * @default + */ + optimizeOverlapping: true, + + /** + * Constructor + * @param {fabric.Canvas} canvas + * @return {fabric.SprayBrush} Instance of a spray brush + */ + initialize: function(canvas) { + this.canvas = canvas; + this.sprayChunks = []; + }, + + /** + * Invoked on mouse down + * @param {Object} pointer + */ + onMouseDown: function(pointer) { + this.sprayChunks.length = 0; + this.canvas.clearContext(this.canvas.contextTop); + this._setShadow(); + + this.addSprayChunk(pointer); + this.render(this.sprayChunkPoints); + }, + + /** + * Invoked on mouse move + * @param {Object} pointer + */ + onMouseMove: function(pointer) { + if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { + return; + } + this.addSprayChunk(pointer); + this.render(this.sprayChunkPoints); + }, + + /** + * Invoked on mouse up + */ + onMouseUp: function() { + var originalRenderOnAddRemove = this.canvas.renderOnAddRemove; + this.canvas.renderOnAddRemove = false; + + var rects = []; + + for (var i = 0, ilen = this.sprayChunks.length; i < ilen; i++) { + var sprayChunk = this.sprayChunks[i]; + + for (var j = 0, jlen = sprayChunk.length; j < jlen; j++) { + + var rect = new fabric.Rect({ + width: sprayChunk[j].width, + height: sprayChunk[j].width, + left: sprayChunk[j].x + 1, + top: sprayChunk[j].y + 1, + originX: 'center', + originY: 'center', + fill: this.color + }); + rects.push(rect); + } + } + + if (this.optimizeOverlapping) { + rects = this._getOptimizedRects(rects); + } + + var group = new fabric.Group(rects); + this.shadow && group.set('shadow', new fabric.Shadow(this.shadow)); + this.canvas.fire('before:path:created', { path: group }); + this.canvas.add(group); + this.canvas.fire('path:created', { path: group }); + + this.canvas.clearContext(this.canvas.contextTop); + this._resetShadow(); + this.canvas.renderOnAddRemove = originalRenderOnAddRemove; + this.canvas.requestRenderAll(); + }, + + /** + * @private + * @param {Array} rects + */ + _getOptimizedRects: function(rects) { + + // avoid creating duplicate rects at the same coordinates + var uniqueRects = { }, key, i, len; + + for (i = 0, len = rects.length; i < len; i++) { + key = rects[i].left + '' + rects[i].top; + if (!uniqueRects[key]) { + uniqueRects[key] = rects[i]; + } + } + var uniqueRectsArray = []; + for (key in uniqueRects) { + uniqueRectsArray.push(uniqueRects[key]); + } + + return uniqueRectsArray; + }, + + /** + * Render new chunk of spray brush + */ + render: function(sprayChunk) { + var ctx = this.canvas.contextTop, i, len; + ctx.fillStyle = this.color; + + this._saveAndTransform(ctx); + + for (i = 0, len = sprayChunk.length; i < len; i++) { + var point = sprayChunk[i]; + if (typeof point.opacity !== 'undefined') { + ctx.globalAlpha = point.opacity; + } + ctx.fillRect(point.x, point.y, point.width, point.width); + } + ctx.restore(); + }, + + /** + * Render all spray chunks + */ + _render: function() { + var ctx = this.canvas.contextTop, i, ilen; + ctx.fillStyle = this.color; + + this._saveAndTransform(ctx); + + for (i = 0, ilen = this.sprayChunks.length; i < ilen; i++) { + this.render(this.sprayChunks[i]); + } + ctx.restore(); + }, + + /** + * @param {Object} pointer + */ + addSprayChunk: function(pointer) { + this.sprayChunkPoints = []; + + var x, y, width, radius = this.width / 2, i; + + for (i = 0; i < this.density; i++) { + + x = fabric.util.getRandomInt(pointer.x - radius, pointer.x + radius); + y = fabric.util.getRandomInt(pointer.y - radius, pointer.y + radius); + + if (this.dotWidthVariance) { + width = fabric.util.getRandomInt( + // bottom clamp width to 1 + Math.max(1, this.dotWidth - this.dotWidthVariance), + this.dotWidth + this.dotWidthVariance); + } + else { + width = this.dotWidth; + } + + var point = new fabric.Point(x, y); + point.width = width; + + if (this.randomOpacity) { + point.opacity = fabric.util.getRandomInt(0, 100) / 100; + } + + this.sprayChunkPoints.push(point); + } + + this.sprayChunks.push(this.sprayChunkPoints); + } +}); + + +/** + * PatternBrush class + * @class fabric.PatternBrush + * @extends fabric.BaseBrush + */ +fabric.PatternBrush = fabric.util.createClass(fabric.PencilBrush, /** @lends fabric.PatternBrush.prototype */ { + + getPatternSrc: function() { + + var dotWidth = 20, + dotDistance = 5, + patternCanvas = fabric.util.createCanvasElement(), + patternCtx = patternCanvas.getContext('2d'); + + patternCanvas.width = patternCanvas.height = dotWidth + dotDistance; + + patternCtx.fillStyle = this.color; + patternCtx.beginPath(); + patternCtx.arc(dotWidth / 2, dotWidth / 2, dotWidth / 2, 0, Math.PI * 2, false); + patternCtx.closePath(); + patternCtx.fill(); + + return patternCanvas; + }, + + getPatternSrcFunction: function() { + return String(this.getPatternSrc).replace('this.color', '"' + this.color + '"'); + }, + + /** + * Creates "pattern" instance property + * @param {CanvasRenderingContext2D} ctx + */ + getPattern: function(ctx) { + return ctx.createPattern(this.source || this.getPatternSrc(), 'repeat'); + }, + + /** + * Sets brush styles + * @param {CanvasRenderingContext2D} ctx + */ + _setBrushStyles: function(ctx) { + this.callSuper('_setBrushStyles', ctx); + ctx.strokeStyle = this.getPattern(ctx); + }, + + /** + * Creates path + */ + createPath: function(pathData) { + var path = this.callSuper('createPath', pathData), + topLeft = path._getLeftTopCoords().scalarAdd(path.strokeWidth / 2); + + path.stroke = new fabric.Pattern({ + source: this.source || this.getPatternSrcFunction(), + offsetX: -topLeft.x, + offsetY: -topLeft.y + }); + return path; + } +}); + + +(function() { + + var getPointer = fabric.util.getPointer, + degreesToRadians = fabric.util.degreesToRadians, + isTouchEvent = fabric.util.isTouchEvent; + + /** + * Canvas class + * @class fabric.Canvas + * @extends fabric.StaticCanvas + * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#canvas} + * @see {@link fabric.Canvas#initialize} for constructor definition + * + * @fires object:modified at the end of a transform or any change when statefull is true + * @fires object:rotating while an object is being rotated from the control + * @fires object:scaling while an object is being scaled by controls + * @fires object:moving while an object is being dragged + * @fires object:skewing while an object is being skewed from the controls + * + * @fires before:transform before a transform is is started + * @fires before:selection:cleared + * @fires selection:cleared + * @fires selection:updated + * @fires selection:created + * + * @fires path:created after a drawing operation ends and the path is added + * @fires mouse:down + * @fires mouse:move + * @fires mouse:up + * @fires mouse:down:before on mouse down, before the inner fabric logic runs + * @fires mouse:move:before on mouse move, before the inner fabric logic runs + * @fires mouse:up:before on mouse up, before the inner fabric logic runs + * @fires mouse:over + * @fires mouse:out + * @fires mouse:dblclick whenever a native dbl click event fires on the canvas. + * + * @fires dragover + * @fires dragenter + * @fires dragleave + * @fires drop:before before drop event. same native event. This is added to handle edge cases + * @fires drop + * @fires after:render at the end of the render process, receives the context in the callback + * @fires before:render at start the render process, receives the context in the callback + * + */ + fabric.Canvas = fabric.util.createClass(fabric.StaticCanvas, /** @lends fabric.Canvas.prototype */ { + + /** + * Constructor + * @param {HTMLElement | String} el <canvas> element to initialize instance on + * @param {Object} [options] Options object + * @return {Object} thisArg + */ + initialize: function(el, options) { + options || (options = { }); + this.renderAndResetBound = this.renderAndReset.bind(this); + this.requestRenderAllBound = this.requestRenderAll.bind(this); + this._initStatic(el, options); + this._initInteractive(); + this._createCacheCanvas(); + }, + + /** + * When true, objects can be transformed by one side (unproportionally) + * when dragged on the corners that normally would not do that. + * @type Boolean + * @default + * @since fabric 4.0 // changed name and default value + */ + uniformScaling: true, + + /** + * Indicates which key switches uniform scaling. + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * If `null` or 'none' or any other string that is not a modifier key + * feature is disabled. + * totally wrong named. this sounds like `uniform scaling` + * if Canvas.uniformScaling is true, pressing this will set it to false + * and viceversa. + * @since 1.6.2 + * @type String + * @default + */ + uniScaleKey: 'shiftKey', + + /** + * When true, objects use center point as the origin of scale transformation. + * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). + * @since 1.3.4 + * @type Boolean + * @default + */ + centeredScaling: false, + + /** + * When true, objects use center point as the origin of rotate transformation. + * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). + * @since 1.3.4 + * @type Boolean + * @default + */ + centeredRotation: false, + + /** + * Indicates which key enable centered Transform + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * If `null` or 'none' or any other string that is not a modifier key + * feature is disabled feature disabled. + * @since 1.6.2 + * @type String + * @default + */ + centeredKey: 'altKey', + + /** + * Indicates which key enable alternate action on corner + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * If `null` or 'none' or any other string that is not a modifier key + * feature is disabled feature disabled. + * @since 1.6.2 + * @type String + * @default + */ + altActionKey: 'shiftKey', + + /** + * Indicates that canvas is interactive. This property should not be changed. + * @type Boolean + * @default + */ + interactive: true, + + /** + * Indicates whether group selection should be enabled + * @type Boolean + * @default + */ + selection: true, + + /** + * Indicates which key or keys enable multiple click selection + * Pass value as a string or array of strings + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * If `null` or empty or containing any other string that is not a modifier key + * feature is disabled. + * @since 1.6.2 + * @type String|Array + * @default + */ + selectionKey: 'shiftKey', + + /** + * Indicates which key enable alternative selection + * in case of target overlapping with active object + * values: 'altKey', 'shiftKey', 'ctrlKey'. + * For a series of reason that come from the general expectations on how + * things should work, this feature works only for preserveObjectStacking true. + * If `null` or 'none' or any other string that is not a modifier key + * feature is disabled. + * @since 1.6.5 + * @type null|String + * @default + */ + altSelectionKey: null, + + /** + * Color of selection + * @type String + * @default + */ + selectionColor: 'rgba(100, 100, 255, 0.3)', // blue + + /** + * Default dash array pattern + * If not empty the selection border is dashed + * @type Array + */ + selectionDashArray: [], + + /** + * Color of the border of selection (usually slightly darker than color of selection itself) + * @type String + * @default + */ + selectionBorderColor: 'rgba(255, 255, 255, 0.3)', + + /** + * Width of a line used in object/group selection + * @type Number + * @default + */ + selectionLineWidth: 1, + + /** + * Select only shapes that are fully contained in the dragged selection rectangle. + * @type Boolean + * @default + */ + selectionFullyContained: false, + + /** + * Default cursor value used when hovering over an object on canvas + * @type String + * @default + */ + hoverCursor: 'move', + + /** + * Default cursor value used when moving an object on canvas + * @type String + * @default + */ + moveCursor: 'move', + + /** + * Default cursor value used for the entire canvas + * @type String + * @default + */ + defaultCursor: 'default', + + /** + * Cursor value used during free drawing + * @type String + * @default + */ + freeDrawingCursor: 'crosshair', + + /** + * Cursor value used for disabled elements ( corners with disabled action ) + * @type String + * @since 2.0.0 + * @default + */ + notAllowedCursor: 'not-allowed', + + /** + * Default element class that's given to wrapper (div) element of canvas + * @type String + * @default + */ + containerClass: 'canvas-container', + + /** + * When true, object detection happens on per-pixel basis rather than on per-bounding-box + * @type Boolean + * @default + */ + perPixelTargetFind: false, + + /** + * Number of pixels around target pixel to tolerate (consider active) during object detection + * @type Number + * @default + */ + targetFindTolerance: 0, + + /** + * When true, target detection is skipped. Target detection will return always undefined. + * click selection won't work anymore, events will fire with no targets. + * if something is selected before setting it to true, it will be deselected at the first click. + * area selection will still work. check the `selection` property too. + * if you deactivate both, you should look into staticCanvas. + * @type Boolean + * @default + */ + skipTargetFind: false, + + /** + * When true, mouse events on canvas (mousedown/mousemove/mouseup) result in free drawing. + * After mousedown, mousemove creates a shape, + * and then mouseup finalizes it and adds an instance of `fabric.Path` onto canvas. + * @tutorial {@link http://fabricjs.com/fabric-intro-part-4#free_drawing} + * @type Boolean + * @default + */ + isDrawingMode: false, + + /** + * Indicates whether objects should remain in current stack position when selected. + * When false objects are brought to top and rendered as part of the selection group + * @type Boolean + * @default + */ + preserveObjectStacking: false, + + /** + * Indicates the angle that an object will lock to while rotating. + * @type Number + * @since 1.6.7 + * @default + */ + snapAngle: 0, + + /** + * Indicates the distance from the snapAngle the rotation will lock to the snapAngle. + * When `null`, the snapThreshold will default to the snapAngle. + * @type null|Number + * @since 1.6.7 + * @default + */ + snapThreshold: null, + + /** + * Indicates if the right click on canvas can output the context menu or not + * @type Boolean + * @since 1.6.5 + * @default + */ + stopContextMenu: false, + + /** + * Indicates if the canvas can fire right click events + * @type Boolean + * @since 1.6.5 + * @default + */ + fireRightClick: false, + + /** + * Indicates if the canvas can fire middle click events + * @type Boolean + * @since 1.7.8 + * @default + */ + fireMiddleClick: false, + + /** + * Keep track of the subTargets for Mouse Events + * @type fabric.Object[] + */ + targets: [], + + /** + * When the option is enabled, PointerEvent is used instead of MouseEvent. + * @type Boolean + * @default + */ + enablePointerEvents: false, + + /** + * Keep track of the hovered target + * @type fabric.Object + * @private + */ + _hoveredTarget: null, + + /** + * hold the list of nested targets hovered + * @type fabric.Object[] + * @private + */ + _hoveredTargets: [], + + /** + * @private + */ + _initInteractive: function() { + this._currentTransform = null; + this._groupSelector = null; + this._initWrapperElement(); + this._createUpperCanvas(); + this._initEventListeners(); + + this._initRetinaScaling(); + + this.freeDrawingBrush = fabric.PencilBrush && new fabric.PencilBrush(this); + + this.calcOffset(); + }, + + /** + * Divides objects in two groups, one to render immediately + * and one to render as activeGroup. + * @return {Array} objects to render immediately and pushes the other in the activeGroup. + */ + _chooseObjectsToRender: function() { + var activeObjects = this.getActiveObjects(), + object, objsToRender, activeGroupObjects; + + if (activeObjects.length > 0 && !this.preserveObjectStacking) { + objsToRender = []; + activeGroupObjects = []; + for (var i = 0, length = this._objects.length; i < length; i++) { + object = this._objects[i]; + if (activeObjects.indexOf(object) === -1 ) { + objsToRender.push(object); + } + else { + activeGroupObjects.push(object); + } + } + if (activeObjects.length > 1) { + this._activeObject._objects = activeGroupObjects; + } + objsToRender.push.apply(objsToRender, activeGroupObjects); + } + else { + objsToRender = this._objects; + } + return objsToRender; + }, + + /** + * Renders both the top canvas and the secondary container canvas. + * @return {fabric.Canvas} instance + * @chainable + */ + renderAll: function () { + if (this.contextTopDirty && !this._groupSelector && !this.isDrawingMode) { + this.clearContext(this.contextTop); + this.contextTopDirty = false; + } + if (this.hasLostContext) { + this.renderTopLayer(this.contextTop); + this.hasLostContext = false; + } + var canvasToDrawOn = this.contextContainer; + this.renderCanvas(canvasToDrawOn, this._chooseObjectsToRender()); + return this; + }, + + renderTopLayer: function(ctx) { + ctx.save(); + if (this.isDrawingMode && this._isCurrentlyDrawing) { + this.freeDrawingBrush && this.freeDrawingBrush._render(); + this.contextTopDirty = true; + } + // we render the top context - last object + if (this.selection && this._groupSelector) { + this._drawSelection(ctx); + this.contextTopDirty = true; + } + ctx.restore(); + }, + + /** + * Method to render only the top canvas. + * Also used to render the group selection box. + * @return {fabric.Canvas} thisArg + * @chainable + */ + renderTop: function () { + var ctx = this.contextTop; + this.clearContext(ctx); + this.renderTopLayer(ctx); + this.fire('after:render'); + return this; + }, + + /** + * @private + */ + _normalizePointer: function (object, pointer) { + var m = object.calcTransformMatrix(), + invertedM = fabric.util.invertTransform(m), + vptPointer = this.restorePointerVpt(pointer); + return fabric.util.transformPoint(vptPointer, invertedM); + }, + + /** + * Returns true if object is transparent at a certain location + * @param {fabric.Object} target Object to check + * @param {Number} x Left coordinate + * @param {Number} y Top coordinate + * @return {Boolean} + */ + isTargetTransparent: function (target, x, y) { + // in case the target is the activeObject, we cannot execute this optimization + // because we need to draw controls too. + if (target.shouldCache() && target._cacheCanvas && target !== this._activeObject) { + var normalizedPointer = this._normalizePointer(target, {x: x, y: y}), + targetRelativeX = Math.max(target.cacheTranslationX + (normalizedPointer.x * target.zoomX), 0), + targetRelativeY = Math.max(target.cacheTranslationY + (normalizedPointer.y * target.zoomY), 0); + + var isTransparent = fabric.util.isTransparent( + target._cacheContext, Math.round(targetRelativeX), Math.round(targetRelativeY), this.targetFindTolerance); + + return isTransparent; + } + + var ctx = this.contextCache, + originalColor = target.selectionBackgroundColor, v = this.viewportTransform; + + target.selectionBackgroundColor = ''; + + this.clearContext(ctx); + + ctx.save(); + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + target.render(ctx); + ctx.restore(); + + target.selectionBackgroundColor = originalColor; + + var isTransparent = fabric.util.isTransparent( + ctx, x, y, this.targetFindTolerance); + + return isTransparent; + }, + + /** + * takes an event and determines if selection key has been pressed + * @private + * @param {Event} e Event object + */ + _isSelectionKeyPressed: function(e) { + var selectionKeyPressed = false; + + if (Object.prototype.toString.call(this.selectionKey) === '[object Array]') { + selectionKeyPressed = !!this.selectionKey.find(function(key) { return e[key] === true; }); + } + else { + selectionKeyPressed = e[this.selectionKey]; + } + + return selectionKeyPressed; + }, + + /** + * @private + * @param {Event} e Event object + * @param {fabric.Object} target + */ + _shouldClearSelection: function (e, target) { + var activeObjects = this.getActiveObjects(), + activeObject = this._activeObject; + + return ( + !target + || + (target && + activeObject && + activeObjects.length > 1 && + activeObjects.indexOf(target) === -1 && + activeObject !== target && + !this._isSelectionKeyPressed(e)) + || + (target && !target.evented) + || + (target && + !target.selectable && + activeObject && + activeObject !== target) + ); + }, + + /** + * centeredScaling from object can't override centeredScaling from canvas. + * this should be fixed, since object setting should take precedence over canvas. + * also this should be something that will be migrated in the control properties. + * as ability to define the origin of the transformation that the control provide. + * @private + * @param {fabric.Object} target + * @param {String} action + * @param {Boolean} altKey + */ + _shouldCenterTransform: function (target, action, altKey) { + if (!target) { + return; + } + + var centerTransform; + + if (action === 'scale' || action === 'scaleX' || action === 'scaleY' || action === 'resizing') { + centerTransform = this.centeredScaling || target.centeredScaling; + } + else if (action === 'rotate') { + centerTransform = this.centeredRotation || target.centeredRotation; + } + + return centerTransform ? !altKey : altKey; + }, + + /** + * should disappear before release 4.0 + * @private + */ + _getOriginFromCorner: function(target, corner) { + var origin = { + x: target.originX, + y: target.originY + }; + + if (corner === 'ml' || corner === 'tl' || corner === 'bl') { + origin.x = 'right'; + } + else if (corner === 'mr' || corner === 'tr' || corner === 'br') { + origin.x = 'left'; + } + + if (corner === 'tl' || corner === 'mt' || corner === 'tr') { + origin.y = 'bottom'; + } + else if (corner === 'bl' || corner === 'mb' || corner === 'br') { + origin.y = 'top'; + } + return origin; + }, + + /** + * @private + * @param {Boolean} alreadySelected true if target is already selected + * @param {String} corner a string representing the corner ml, mr, tl ... + * @param {Event} e Event object + * @param {fabric.Object} [target] inserted back to help overriding. Unused + */ + _getActionFromCorner: function(alreadySelected, corner, e, target) { + if (!corner || !alreadySelected) { + return 'drag'; + } + var control = target.controls[corner]; + return control.getActionName(e, control, target); + }, + + /** + * @private + * @param {Event} e Event object + * @param {fabric.Object} target + */ + _setupCurrentTransform: function (e, target, alreadySelected) { + if (!target) { + return; + } + + var pointer = this.getPointer(e), corner = target.__corner, + control = target.controls[corner], + actionHandler = (alreadySelected && corner) ? + control.getActionHandler(e, target, control) : fabric.controlsUtils.dragHandler, + action = this._getActionFromCorner(alreadySelected, corner, e, target), + origin = this._getOriginFromCorner(target, corner), + altKey = e[this.centeredKey], + transform = { + target: target, + action: action, + actionHandler: actionHandler, + corner: corner, + scaleX: target.scaleX, + scaleY: target.scaleY, + skewX: target.skewX, + skewY: target.skewY, + // used by transation + offsetX: pointer.x - target.left, + offsetY: pointer.y - target.top, + originX: origin.x, + originY: origin.y, + ex: pointer.x, + ey: pointer.y, + lastX: pointer.x, + lastY: pointer.y, + // unsure they are useful anymore. + // left: target.left, + // top: target.top, + theta: degreesToRadians(target.angle), + // end of unsure + width: target.width * target.scaleX, + shiftKey: e.shiftKey, + altKey: altKey, + original: fabric.util.saveObjectTransform(target), + }; + + if (this._shouldCenterTransform(target, action, altKey)) { + transform.originX = 'center'; + transform.originY = 'center'; + } + transform.original.originX = origin.x; + transform.original.originY = origin.y; + this._currentTransform = transform; + this._beforeTransform(e); + }, + + /** + * Set the cursor type of the canvas element + * @param {String} value Cursor type of the canvas element. + * @see http://www.w3.org/TR/css3-ui/#cursor + */ + setCursor: function (value) { + this.upperCanvasEl.style.cursor = value; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx to draw the selection on + */ + _drawSelection: function (ctx) { + var selector = this._groupSelector, + viewportStart = new fabric.Point(selector.ex, selector.ey), + start = fabric.util.transformPoint(viewportStart, this.viewportTransform), + viewportExtent = new fabric.Point(selector.ex + selector.left, selector.ey + selector.top), + extent = fabric.util.transformPoint(viewportExtent, this.viewportTransform), + minX = Math.min(start.x, extent.x), + minY = Math.min(start.y, extent.y), + maxX = Math.max(start.x, extent.x), + maxY = Math.max(start.y, extent.y), + strokeOffset = this.selectionLineWidth / 2; + + if (this.selectionColor) { + ctx.fillStyle = this.selectionColor; + ctx.fillRect(minX, minY, maxX - minX, maxY - minY); + } + + if (!this.selectionLineWidth || !this.selectionBorderColor) { + return; + } + ctx.lineWidth = this.selectionLineWidth; + ctx.strokeStyle = this.selectionBorderColor; + + minX += strokeOffset; + minY += strokeOffset; + maxX -= strokeOffset; + maxY -= strokeOffset; + // selection border + fabric.Object.prototype._setLineDash.call(this, ctx, this.selectionDashArray); + ctx.strokeRect(minX, minY, maxX - minX, maxY - minY); + }, + + /** + * Method that determines what object we are clicking on + * the skipGroup parameter is for internal use, is needed for shift+click action + * 11/09/2018 TODO: would be cool if findTarget could discern between being a full target + * or the outside part of the corner. + * @param {Event} e mouse event + * @param {Boolean} skipGroup when true, activeGroup is skipped and only objects are traversed through + * @return {fabric.Object} the target found + */ + findTarget: function (e, skipGroup) { + if (this.skipTargetFind) { + return; + } + + var ignoreZoom = true, + pointer = this.getPointer(e, ignoreZoom), + activeObject = this._activeObject, + aObjects = this.getActiveObjects(), + activeTarget, activeTargetSubs, + isTouch = isTouchEvent(e), + shouldLookForActive = (aObjects.length > 1 && !skipGroup) || aObjects.length === 1; + + // first check current group (if one exists) + // active group does not check sub targets like normal groups. + // if active group just exits. + this.targets = []; + + // if we hit the corner of an activeObject, let's return that. + if (shouldLookForActive && activeObject._findTargetCorner(pointer, isTouch)) { + return activeObject; + } + if (aObjects.length > 1 && !skipGroup && activeObject === this._searchPossibleTargets([activeObject], pointer)) { + return activeObject; + } + if (aObjects.length === 1 && + activeObject === this._searchPossibleTargets([activeObject], pointer)) { + if (!this.preserveObjectStacking) { + return activeObject; + } + else { + activeTarget = activeObject; + activeTargetSubs = this.targets; + this.targets = []; + } + } + var target = this._searchPossibleTargets(this._objects, pointer); + if (e[this.altSelectionKey] && target && activeTarget && target !== activeTarget) { + target = activeTarget; + this.targets = activeTargetSubs; + } + return target; + }, + + /** + * Checks point is inside the object. + * @param {Object} [pointer] x,y object of point coordinates we want to check. + * @param {fabric.Object} obj Object to test against + * @param {Object} [globalPointer] x,y object of point coordinates relative to canvas used to search per pixel target. + * @return {Boolean} true if point is contained within an area of given object + * @private + */ + _checkTarget: function(pointer, obj, globalPointer) { + if (obj && + obj.visible && + obj.evented && + // http://www.geog.ubc.ca/courses/klink/gis.notes/ncgia/u32.html + // http://idav.ucdavis.edu/~okreylos/TAship/Spring2000/PointInPolygon.html + obj.containsPoint(pointer) + ) { + if ((this.perPixelTargetFind || obj.perPixelTargetFind) && !obj.isEditing) { + var isTransparent = this.isTargetTransparent(obj, globalPointer.x, globalPointer.y); + if (!isTransparent) { + return true; + } + } + else { + return true; + } + } + }, + + /** + * Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted + * @param {Array} [objects] objects array to look into + * @param {Object} [pointer] x,y object of point coordinates we want to check. + * @return {fabric.Object} object that contains pointer + * @private + */ + _searchPossibleTargets: function(objects, pointer) { + // Cache all targets where their bounding box contains point. + var target, i = objects.length, subTarget; + // Do not check for currently grouped objects, since we check the parent group itself. + // until we call this function specifically to search inside the activeGroup + while (i--) { + var objToCheck = objects[i]; + var pointerToUse = objToCheck.group ? + this._normalizePointer(objToCheck.group, pointer) : pointer; + if (this._checkTarget(pointerToUse, objToCheck, pointer)) { + target = objects[i]; + if (target.subTargetCheck && target instanceof fabric.Group) { + subTarget = this._searchPossibleTargets(target._objects, pointer); + subTarget && this.targets.push(subTarget); + } + break; + } + } + return target; + }, + + /** + * Returns pointer coordinates without the effect of the viewport + * @param {Object} pointer with "x" and "y" number values + * @return {Object} object with "x" and "y" number values + */ + restorePointerVpt: function(pointer) { + return fabric.util.transformPoint( + pointer, + fabric.util.invertTransform(this.viewportTransform) + ); + }, + + /** + * Returns pointer coordinates relative to canvas. + * Can return coordinates with or without viewportTransform. + * ignoreZoom false gives back coordinates that represent + * the point clicked on canvas element. + * ignoreZoom true gives back coordinates after being processed + * by the viewportTransform ( sort of coordinates of what is displayed + * on the canvas where you are clicking. + * ignoreZoom true = HTMLElement coordinates relative to top,left + * ignoreZoom false, default = fabric space coordinates, the same used for shape position + * To interact with your shapes top and left you want to use ignoreZoom true + * most of the time, while ignoreZoom false will give you coordinates + * compatible with the object.oCoords system. + * of the time. + * @param {Event} e + * @param {Boolean} ignoreZoom + * @return {Object} object with "x" and "y" number values + */ + getPointer: function (e, ignoreZoom) { + // return cached values if we are in the event processing chain + if (this._absolutePointer && !ignoreZoom) { + return this._absolutePointer; + } + if (this._pointer && ignoreZoom) { + return this._pointer; + } + + var pointer = getPointer(e), + upperCanvasEl = this.upperCanvasEl, + bounds = upperCanvasEl.getBoundingClientRect(), + boundsWidth = bounds.width || 0, + boundsHeight = bounds.height || 0, + cssScale; + + if (!boundsWidth || !boundsHeight ) { + if ('top' in bounds && 'bottom' in bounds) { + boundsHeight = Math.abs( bounds.top - bounds.bottom ); + } + if ('right' in bounds && 'left' in bounds) { + boundsWidth = Math.abs( bounds.right - bounds.left ); + } + } + + this.calcOffset(); + pointer.x = pointer.x - this._offset.left; + pointer.y = pointer.y - this._offset.top; + if (!ignoreZoom) { + pointer = this.restorePointerVpt(pointer); + } + + var retinaScaling = this.getRetinaScaling(); + if (retinaScaling !== 1) { + pointer.x /= retinaScaling; + pointer.y /= retinaScaling; + } + + if (boundsWidth === 0 || boundsHeight === 0) { + // If bounds are not available (i.e. not visible), do not apply scale. + cssScale = { width: 1, height: 1 }; + } + else { + cssScale = { + width: upperCanvasEl.width / boundsWidth, + height: upperCanvasEl.height / boundsHeight + }; + } + + return { + x: pointer.x * cssScale.width, + y: pointer.y * cssScale.height + }; + }, + + /** + * @private + * @throws {CANVAS_INIT_ERROR} If canvas can not be initialized + */ + _createUpperCanvas: function () { + var lowerCanvasClass = this.lowerCanvasEl.className.replace(/\s*lower-canvas\s*/, ''), + lowerCanvasEl = this.lowerCanvasEl, upperCanvasEl = this.upperCanvasEl; + + // there is no need to create a new upperCanvas element if we have already one. + if (upperCanvasEl) { + upperCanvasEl.className = ''; + } + else { + upperCanvasEl = this._createCanvasElement(); + this.upperCanvasEl = upperCanvasEl; + } + fabric.util.addClass(upperCanvasEl, 'upper-canvas ' + lowerCanvasClass); + + this.wrapperEl.appendChild(upperCanvasEl); + + this._copyCanvasStyle(lowerCanvasEl, upperCanvasEl); + this._applyCanvasStyle(upperCanvasEl); + this.contextTop = upperCanvasEl.getContext('2d'); + }, + + /** + * @private + */ + _createCacheCanvas: function () { + this.cacheCanvasEl = this._createCanvasElement(); + this.cacheCanvasEl.setAttribute('width', this.width); + this.cacheCanvasEl.setAttribute('height', this.height); + this.contextCache = this.cacheCanvasEl.getContext('2d'); + }, + + /** + * @private + */ + _initWrapperElement: function () { + this.wrapperEl = fabric.util.wrapElement(this.lowerCanvasEl, 'div', { + 'class': this.containerClass + }); + fabric.util.setStyle(this.wrapperEl, { + width: this.width + 'px', + height: this.height + 'px', + position: 'relative' + }); + fabric.util.makeElementUnselectable(this.wrapperEl); + }, + + /** + * @private + * @param {HTMLElement} element canvas element to apply styles on + */ + _applyCanvasStyle: function (element) { + var width = this.width || element.width, + height = this.height || element.height; + + fabric.util.setStyle(element, { + position: 'absolute', + width: width + 'px', + height: height + 'px', + left: 0, + top: 0, + 'touch-action': this.allowTouchScrolling ? 'manipulation' : 'none', + '-ms-touch-action': this.allowTouchScrolling ? 'manipulation' : 'none' + }); + element.width = width; + element.height = height; + fabric.util.makeElementUnselectable(element); + }, + + /** + * Copy the entire inline style from one element (fromEl) to another (toEl) + * @private + * @param {Element} fromEl Element style is copied from + * @param {Element} toEl Element copied style is applied to + */ + _copyCanvasStyle: function (fromEl, toEl) { + toEl.style.cssText = fromEl.style.cssText; + }, + + /** + * Returns context of canvas where object selection is drawn + * @return {CanvasRenderingContext2D} + */ + getSelectionContext: function() { + return this.contextTop; + }, + + /** + * Returns <canvas> element on which object selection is drawn + * @return {HTMLCanvasElement} + */ + getSelectionElement: function () { + return this.upperCanvasEl; + }, + + /** + * Returns currently active object + * @return {fabric.Object} active object + */ + getActiveObject: function () { + return this._activeObject; + }, + + /** + * Returns an array with the current selected objects + * @return {fabric.Object} active object + */ + getActiveObjects: function () { + var active = this._activeObject; + if (active) { + if (active.type === 'activeSelection' && active._objects) { + return active._objects.slice(0); + } + else { + return [active]; + } + } + return []; + }, + + /** + * @private + * @param {fabric.Object} obj Object that was removed + */ + _onObjectRemoved: function(obj) { + // removing active object should fire "selection:cleared" events + if (obj === this._activeObject) { + this.fire('before:selection:cleared', { target: obj }); + this._discardActiveObject(); + this.fire('selection:cleared', { target: obj }); + obj.fire('deselected'); + } + if (obj === this._hoveredTarget){ + this._hoveredTarget = null; + this._hoveredTargets = []; + } + this.callSuper('_onObjectRemoved', obj); + }, + + /** + * @private + * Compares the old activeObject with the current one and fires correct events + * @param {fabric.Object} obj old activeObject + */ + _fireSelectionEvents: function(oldObjects, e) { + var somethingChanged = false, objects = this.getActiveObjects(), + added = [], removed = []; + oldObjects.forEach(function(oldObject) { + if (objects.indexOf(oldObject) === -1) { + somethingChanged = true; + oldObject.fire('deselected', { + e: e, + target: oldObject + }); + removed.push(oldObject); + } + }); + objects.forEach(function(object) { + if (oldObjects.indexOf(object) === -1) { + somethingChanged = true; + object.fire('selected', { + e: e, + target: object + }); + added.push(object); + } + }); + if (oldObjects.length > 0 && objects.length > 0) { + somethingChanged && this.fire('selection:updated', { + e: e, + selected: added, + deselected: removed, + }); + } + else if (objects.length > 0) { + this.fire('selection:created', { + e: e, + selected: added, + }); + } + else if (oldObjects.length > 0) { + this.fire('selection:cleared', { + e: e, + deselected: removed, + }); + } + }, + + /** + * Sets given object as the only active object on canvas + * @param {fabric.Object} object Object to set as an active one + * @param {Event} [e] Event (passed along when firing "object:selected") + * @return {fabric.Canvas} thisArg + * @chainable + */ + setActiveObject: function (object, e) { + var currentActives = this.getActiveObjects(); + this._setActiveObject(object, e); + this._fireSelectionEvents(currentActives, e); + return this; + }, + + /** + * This is a private method for now. + * This is supposed to be equivalent to setActiveObject but without firing + * any event. There is commitment to have this stay this way. + * This is the functional part of setActiveObject. + * @private + * @param {Object} object to set as active + * @param {Event} [e] Event (passed along when firing "object:selected") + * @return {Boolean} true if the selection happened + */ + _setActiveObject: function(object, e) { + if (this._activeObject === object) { + return false; + } + if (!this._discardActiveObject(e, object)) { + return false; + } + if (object.onSelect({ e: e })) { + return false; + } + this._activeObject = object; + return true; + }, + + /** + * This is a private method for now. + * This is supposed to be equivalent to discardActiveObject but without firing + * any events. There is commitment to have this stay this way. + * This is the functional part of discardActiveObject. + * @param {Event} [e] Event (passed along when firing "object:deselected") + * @param {Object} object to set as active + * @return {Boolean} true if the selection happened + * @private + */ + _discardActiveObject: function(e, object) { + var obj = this._activeObject; + if (obj) { + // onDeselect return TRUE to cancel selection; + if (obj.onDeselect({ e: e, object: object })) { + return false; + } + this._activeObject = null; + } + return true; + }, + + /** + * Discards currently active object and fire events. If the function is called by fabric + * as a consequence of a mouse event, the event is passed as a parameter and + * sent to the fire function for the custom events. When used as a method the + * e param does not have any application. + * @param {event} e + * @return {fabric.Canvas} thisArg + * @chainable + */ + discardActiveObject: function (e) { + var currentActives = this.getActiveObjects(), activeObject = this.getActiveObject(); + if (currentActives.length) { + this.fire('before:selection:cleared', { target: activeObject, e: e }); + } + this._discardActiveObject(e); + this._fireSelectionEvents(currentActives, e); + return this; + }, + + /** + * Clears a canvas element and removes all event listeners + * @return {fabric.Canvas} thisArg + * @chainable + */ + dispose: function () { + var wrapper = this.wrapperEl; + this.removeListeners(); + wrapper.removeChild(this.upperCanvasEl); + wrapper.removeChild(this.lowerCanvasEl); + this.contextCache = null; + this.contextTop = null; + ['upperCanvasEl', 'cacheCanvasEl'].forEach((function(element) { + fabric.util.cleanUpJsdomNode(this[element]); + this[element] = undefined; + }).bind(this)); + if (wrapper.parentNode) { + wrapper.parentNode.replaceChild(this.lowerCanvasEl, this.wrapperEl); + } + delete this.wrapperEl; + fabric.StaticCanvas.prototype.dispose.call(this); + return this; + }, + + /** + * Clears all contexts (background, main, top) of an instance + * @return {fabric.Canvas} thisArg + * @chainable + */ + clear: function () { + // this.discardActiveGroup(); + this.discardActiveObject(); + this.clearContext(this.contextTop); + return this.callSuper('clear'); + }, + + /** + * Draws objects' controls (borders/controls) + * @param {CanvasRenderingContext2D} ctx Context to render controls on + */ + drawControls: function(ctx) { + var activeObject = this._activeObject; + + if (activeObject) { + activeObject._renderControls(ctx); + } + }, + + /** + * @private + */ + _toObject: function(instance, methodName, propertiesToInclude) { + //If the object is part of the current selection group, it should + //be transformed appropriately + //i.e. it should be serialised as it would appear if the selection group + //were to be destroyed. + var originalProperties = this._realizeGroupTransformOnObject(instance), + object = this.callSuper('_toObject', instance, methodName, propertiesToInclude); + //Undo the damage we did by changing all of its properties + this._unwindGroupTransformOnObject(instance, originalProperties); + return object; + }, + + /** + * Realises an object's group transformation on it + * @private + * @param {fabric.Object} [instance] the object to transform (gets mutated) + * @returns the original values of instance which were changed + */ + _realizeGroupTransformOnObject: function(instance) { + if (instance.group && instance.group.type === 'activeSelection' && this._activeObject === instance.group) { + var layoutProps = ['angle', 'flipX', 'flipY', 'left', 'scaleX', 'scaleY', 'skewX', 'skewY', 'top']; + //Copy all the positionally relevant properties across now + var originalValues = {}; + layoutProps.forEach(function(prop) { + originalValues[prop] = instance[prop]; + }); + fabric.util.addTransformToObject(instance, this._activeObject.calcOwnMatrix()); + return originalValues; + } + else { + return null; + } + }, + + /** + * Restores the changed properties of instance + * @private + * @param {fabric.Object} [instance] the object to un-transform (gets mutated) + * @param {Object} [originalValues] the original values of instance, as returned by _realizeGroupTransformOnObject + */ + _unwindGroupTransformOnObject: function(instance, originalValues) { + if (originalValues) { + instance.set(originalValues); + } + }, + + /** + * @private + */ + _setSVGObject: function(markup, instance, reviver) { + //If the object is in a selection group, simulate what would happen to that + //object when the group is deselected + var originalProperties = this._realizeGroupTransformOnObject(instance); + this.callSuper('_setSVGObject', markup, instance, reviver); + this._unwindGroupTransformOnObject(instance, originalProperties); + }, + + setViewportTransform: function (vpt) { + if (this.renderOnAddRemove && this._activeObject && this._activeObject.isEditing) { + this._activeObject.clearContextTop(); + } + fabric.StaticCanvas.prototype.setViewportTransform.call(this, vpt); + } + }); + + // copying static properties manually to work around Opera's bug, + // where "prototype" property is enumerable and overrides existing prototype + for (var prop in fabric.StaticCanvas) { + if (prop !== 'prototype') { + fabric.Canvas[prop] = fabric.StaticCanvas[prop]; + } + } +})(); + + +(function() { + + var addListener = fabric.util.addListener, + removeListener = fabric.util.removeListener, + RIGHT_CLICK = 3, MIDDLE_CLICK = 2, LEFT_CLICK = 1, + addEventOptions = { passive: false }; + + function checkClick(e, value) { + return e.button && (e.button === value - 1); + } + + fabric.util.object.extend(fabric.Canvas.prototype, /** @lends fabric.Canvas.prototype */ { + + /** + * Contains the id of the touch event that owns the fabric transform + * @type Number + * @private + */ + mainTouchId: null, + + /** + * Adds mouse listeners to canvas + * @private + */ + _initEventListeners: function () { + // in case we initialized the class twice. This should not happen normally + // but in some kind of applications where the canvas element may be changed + // this is a workaround to having double listeners. + this.removeListeners(); + this._bindEvents(); + this.addOrRemove(addListener, 'add'); + }, + + /** + * return an event prefix pointer or mouse. + * @private + */ + _getEventPrefix: function () { + return this.enablePointerEvents ? 'pointer' : 'mouse'; + }, + + addOrRemove: function(functor, eventjsFunctor) { + var canvasElement = this.upperCanvasEl, + eventTypePrefix = this._getEventPrefix(); + functor(fabric.window, 'resize', this._onResize); + functor(canvasElement, eventTypePrefix + 'down', this._onMouseDown); + functor(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + functor(canvasElement, eventTypePrefix + 'out', this._onMouseOut); + functor(canvasElement, eventTypePrefix + 'enter', this._onMouseEnter); + functor(canvasElement, 'wheel', this._onMouseWheel); + functor(canvasElement, 'contextmenu', this._onContextMenu); + functor(canvasElement, 'dblclick', this._onDoubleClick); + functor(canvasElement, 'dragover', this._onDragOver); + functor(canvasElement, 'dragenter', this._onDragEnter); + functor(canvasElement, 'dragleave', this._onDragLeave); + functor(canvasElement, 'drop', this._onDrop); + if (!this.enablePointerEvents) { + functor(canvasElement, 'touchstart', this._onTouchStart, addEventOptions); + } + if (typeof eventjs !== 'undefined' && eventjsFunctor in eventjs) { + eventjs[eventjsFunctor](canvasElement, 'gesture', this._onGesture); + eventjs[eventjsFunctor](canvasElement, 'drag', this._onDrag); + eventjs[eventjsFunctor](canvasElement, 'orientation', this._onOrientationChange); + eventjs[eventjsFunctor](canvasElement, 'shake', this._onShake); + eventjs[eventjsFunctor](canvasElement, 'longpress', this._onLongPress); + } + }, + + /** + * Removes all event listeners + */ + removeListeners: function() { + this.addOrRemove(removeListener, 'remove'); + // if you dispose on a mouseDown, before mouse up, you need to clean document to... + var eventTypePrefix = this._getEventPrefix(); + removeListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); + removeListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); + removeListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + removeListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); + }, + + /** + * @private + */ + _bindEvents: function() { + if (this.eventsBound) { + // for any reason we pass here twice we do not want to bind events twice. + return; + } + this._onMouseDown = this._onMouseDown.bind(this); + this._onTouchStart = this._onTouchStart.bind(this); + this._onMouseMove = this._onMouseMove.bind(this); + this._onMouseUp = this._onMouseUp.bind(this); + this._onTouchEnd = this._onTouchEnd.bind(this); + this._onResize = this._onResize.bind(this); + this._onGesture = this._onGesture.bind(this); + this._onDrag = this._onDrag.bind(this); + this._onShake = this._onShake.bind(this); + this._onLongPress = this._onLongPress.bind(this); + this._onOrientationChange = this._onOrientationChange.bind(this); + this._onMouseWheel = this._onMouseWheel.bind(this); + this._onMouseOut = this._onMouseOut.bind(this); + this._onMouseEnter = this._onMouseEnter.bind(this); + this._onContextMenu = this._onContextMenu.bind(this); + this._onDoubleClick = this._onDoubleClick.bind(this); + this._onDragOver = this._onDragOver.bind(this); + this._onDragEnter = this._simpleEventHandler.bind(this, 'dragenter'); + this._onDragLeave = this._simpleEventHandler.bind(this, 'dragleave'); + this._onDrop = this._onDrop.bind(this); + this.eventsBound = true; + }, + + /** + * @private + * @param {Event} [e] Event object fired on Event.js gesture + * @param {Event} [self] Inner Event object + */ + _onGesture: function(e, self) { + this.__onTransformGesture && this.__onTransformGesture(e, self); + }, + + /** + * @private + * @param {Event} [e] Event object fired on Event.js drag + * @param {Event} [self] Inner Event object + */ + _onDrag: function(e, self) { + this.__onDrag && this.__onDrag(e, self); + }, + + /** + * @private + * @param {Event} [e] Event object fired on wheel event + */ + _onMouseWheel: function(e) { + this.__onMouseWheel(e); + }, + + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onMouseOut: function(e) { + var target = this._hoveredTarget; + this.fire('mouse:out', { target: target, e: e }); + this._hoveredTarget = null; + target && target.fire('mouseout', { e: e }); + + var _this = this; + this._hoveredTargets.forEach(function(_target){ + _this.fire('mouse:out', { target: target, e: e }); + _target && target.fire('mouseout', { e: e }); + }); + this._hoveredTargets = []; + + if (this._iTextInstances) { + this._iTextInstances.forEach(function(obj) { + if (obj.isEditing) { + obj.hiddenTextarea.focus(); + } + }); + } + }, + + /** + * @private + * @param {Event} e Event object fired on mouseenter + */ + _onMouseEnter: function(e) { + // This find target and consequent 'mouse:over' is used to + // clear old instances on hovered target. + // calling findTarget has the side effect of killing target.__corner. + // as a short term fix we are not firing this if we are currently transforming. + // as a long term fix we need to separate the action of finding a target with the + // side effects we added to it. + if (!this._currentTransform && !this.findTarget(e)) { + this.fire('mouse:over', { target: null, e: e }); + this._hoveredTarget = null; + this._hoveredTargets = []; + } + }, + + /** + * @private + * @param {Event} [e] Event object fired on Event.js orientation change + * @param {Event} [self] Inner Event object + */ + _onOrientationChange: function(e, self) { + this.__onOrientationChange && this.__onOrientationChange(e, self); + }, + + /** + * @private + * @param {Event} [e] Event object fired on Event.js shake + * @param {Event} [self] Inner Event object + */ + _onShake: function(e, self) { + this.__onShake && this.__onShake(e, self); + }, + + /** + * @private + * @param {Event} [e] Event object fired on Event.js shake + * @param {Event} [self] Inner Event object + */ + _onLongPress: function(e, self) { + this.__onLongPress && this.__onLongPress(e, self); + }, + + /** + * prevent default to allow drop event to be fired + * @private + * @param {Event} [e] Event object fired on Event.js shake + */ + _onDragOver: function(e) { + e.preventDefault(); + var target = this._simpleEventHandler('dragover', e); + this._fireEnterLeaveEvents(target, e); + }, + + /** + * `drop:before` is a an event that allow you to schedule logic + * before the `drop` event. Prefer `drop` event always, but if you need + * to run some drop-disabling logic on an event, since there is no way + * to handle event handlers ordering, use `drop:before` + * @param {Event} e + */ + _onDrop: function (e) { + this._simpleEventHandler('drop:before', e); + return this._simpleEventHandler('drop', e); + }, + + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onContextMenu: function (e) { + if (this.stopContextMenu) { + e.stopPropagation(); + e.preventDefault(); + } + return false; + }, + + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onDoubleClick: function (e) { + this._cacheTransformEventData(e); + this._handleEvent(e, 'dblclick'); + this._resetTransformEventData(e); + }, + + /** + * Return a the id of an event. + * returns either the pointerId or the identifier or 0 for the mouse event + * @private + * @param {Event} evt Event object + */ + getPointerId: function(evt) { + var changedTouches = evt.changedTouches; + + if (changedTouches) { + return changedTouches[0] && changedTouches[0].identifier; + } + + if (this.enablePointerEvents) { + return evt.pointerId; + } + + return -1; + }, + + /** + * Determines if an event has the id of the event that is considered main + * @private + * @param {evt} event Event object + */ + _isMainEvent: function(evt) { + if (evt.isPrimary === true) { + return true; + } + if (evt.isPrimary === false) { + return false; + } + if (evt.type === 'touchend' && evt.touches.length === 0) { + return true; + } + if (evt.changedTouches) { + return evt.changedTouches[0].identifier === this.mainTouchId; + } + return true; + }, + + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onTouchStart: function(e) { + e.preventDefault(); + if (this.mainTouchId === null) { + this.mainTouchId = this.getPointerId(e); + } + this.__onMouseDown(e); + this._resetTransformEventData(); + var canvasElement = this.upperCanvasEl, + eventTypePrefix = this._getEventPrefix(); + addListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); + addListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); + // Unbind mousedown to prevent double triggers from touch devices + removeListener(canvasElement, eventTypePrefix + 'down', this._onMouseDown); + }, + + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onMouseDown: function (e) { + this.__onMouseDown(e); + this._resetTransformEventData(); + var canvasElement = this.upperCanvasEl, + eventTypePrefix = this._getEventPrefix(); + removeListener(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + addListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); + addListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + }, + + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onTouchEnd: function(e) { + if (e.touches.length > 0) { + // if there are still touches stop here + return; + } + this.__onMouseUp(e); + this._resetTransformEventData(); + this.mainTouchId = null; + var eventTypePrefix = this._getEventPrefix(); + removeListener(fabric.document, 'touchend', this._onTouchEnd, addEventOptions); + removeListener(fabric.document, 'touchmove', this._onMouseMove, addEventOptions); + var _this = this; + if (this._willAddMouseDown) { + clearTimeout(this._willAddMouseDown); + } + this._willAddMouseDown = setTimeout(function() { + // Wait 400ms before rebinding mousedown to prevent double triggers + // from touch devices + addListener(_this.upperCanvasEl, eventTypePrefix + 'down', _this._onMouseDown); + _this._willAddMouseDown = 0; + }, 400); + }, + + /** + * @private + * @param {Event} e Event object fired on mouseup + */ + _onMouseUp: function (e) { + this.__onMouseUp(e); + this._resetTransformEventData(); + var canvasElement = this.upperCanvasEl, + eventTypePrefix = this._getEventPrefix(); + if (this._isMainEvent(e)) { + removeListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp); + removeListener(fabric.document, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + addListener(canvasElement, eventTypePrefix + 'move', this._onMouseMove, addEventOptions); + } + }, + + /** + * @private + * @param {Event} e Event object fired on mousemove + */ + _onMouseMove: function (e) { + !this.allowTouchScrolling && e.preventDefault && e.preventDefault(); + this.__onMouseMove(e); + }, + + /** + * @private + */ + _onResize: function () { + this.calcOffset(); + }, + + /** + * Decides whether the canvas should be redrawn in mouseup and mousedown events. + * @private + * @param {Object} target + */ + _shouldRender: function(target) { + var activeObject = this._activeObject; + + if ( + !!activeObject !== !!target || + (activeObject && target && (activeObject !== target)) + ) { + // this covers: switch of target, from target to no target, selection of target + // multiSelection with key and mouse + return true; + } + else if (activeObject && activeObject.isEditing) { + // if we mouse up/down over a editing textbox a cursor change, + // there is no need to re render + return false; + } + return false; + }, + + /** + * Method that defines the actions when mouse is released on canvas. + * The method resets the currentTransform parameters, store the image corner + * position in the image object and render the canvas on top. + * @private + * @param {Event} e Event object fired on mouseup + */ + __onMouseUp: function (e) { + var target, transform = this._currentTransform, + groupSelector = this._groupSelector, shouldRender = false, + isClick = (!groupSelector || (groupSelector.left === 0 && groupSelector.top === 0)); + this._cacheTransformEventData(e); + target = this._target; + this._handleEvent(e, 'up:before'); + // if right/middle click just fire events and return + // target undefined will make the _handleEvent search the target + if (checkClick(e, RIGHT_CLICK)) { + if (this.fireRightClick) { + this._handleEvent(e, 'up', RIGHT_CLICK, isClick); + } + return; + } + + if (checkClick(e, MIDDLE_CLICK)) { + if (this.fireMiddleClick) { + this._handleEvent(e, 'up', MIDDLE_CLICK, isClick); + } + this._resetTransformEventData(); + return; + } + + if (this.isDrawingMode && this._isCurrentlyDrawing) { + this._onMouseUpInDrawingMode(e); + return; + } + + if (!this._isMainEvent(e)) { + return; + } + if (transform) { + this._finalizeCurrentTransform(e); + shouldRender = transform.actionPerformed; + } + if (!isClick) { + var targetWasActive = target === this._activeObject; + this._maybeGroupObjects(e); + if (!shouldRender) { + shouldRender = ( + this._shouldRender(target) || + (!targetWasActive && target === this._activeObject) + ); + } + } + var corner, pointer; + if (target) { + corner = target._findTargetCorner( + this.getPointer(e, true), + fabric.util.isTouchEvent(e) + ); + if (target.selectable && target !== this._activeObject && target.activeOn === 'up') { + this.setActiveObject(target, e); + shouldRender = true; + } + else { + var control = target.controls[corner], + mouseUpHandler = control && control.getMouseUpHandler(e, target, control); + if (mouseUpHandler) { + pointer = this.getPointer(e); + mouseUpHandler(e, transform, pointer.x, pointer.y); + } + } + target.isMoving = false; + } + // if we are ending up a transform on a different control or a new object + // fire the original mouse up from the corner that started the transform + if (transform && (transform.target !== target || transform.corner !== corner)) { + var originalControl = transform.target && transform.target.controls[transform.corner], + originalMouseUpHandler = originalControl && originalControl.getMouseUpHandler(e, target, control); + pointer = pointer || this.getPointer(e); + originalMouseUpHandler && originalMouseUpHandler(e, transform, pointer.x, pointer.y); + } + this._setCursorFromEvent(e, target); + this._handleEvent(e, 'up', LEFT_CLICK, isClick); + this._groupSelector = null; + this._currentTransform = null; + // reset the target information about which corner is selected + target && (target.__corner = 0); + if (shouldRender) { + this.requestRenderAll(); + } + else if (!isClick) { + this.renderTop(); + } + }, + + /** + * @private + * Handle event firing for target and subtargets + * @param {Event} e event from mouse + * @param {String} eventType event to fire (up, down or move) + * @return {Fabric.Object} target return the the target found, for internal reasons. + */ + _simpleEventHandler: function(eventType, e) { + var target = this.findTarget(e), + targets = this.targets, + options = { + e: e, + target: target, + subTargets: targets, + }; + this.fire(eventType, options); + target && target.fire(eventType, options); + if (!targets) { + return target; + } + for (var i = 0; i < targets.length; i++) { + targets[i].fire(eventType, options); + } + return target; + }, + + /** + * @private + * Handle event firing for target and subtargets + * @param {Event} e event from mouse + * @param {String} eventType event to fire (up, down or move) + * @param {fabric.Object} targetObj receiving event + * @param {Number} [button] button used in the event 1 = left, 2 = middle, 3 = right + * @param {Boolean} isClick for left button only, indicates that the mouse up happened without move. + */ + _handleEvent: function(e, eventType, button, isClick) { + var target = this._target, + targets = this.targets || [], + options = { + e: e, + target: target, + subTargets: targets, + button: button || LEFT_CLICK, + isClick: isClick || false, + pointer: this._pointer, + absolutePointer: this._absolutePointer, + transform: this._currentTransform + }; + if (eventType === 'up') { + options.currentTarget = this.findTarget(e); + options.currentSubTargets = this.targets; + } + this.fire('mouse:' + eventType, options); + target && target.fire('mouse' + eventType, options); + for (var i = 0; i < targets.length; i++) { + targets[i].fire('mouse' + eventType, options); + } + }, + + /** + * @private + * @param {Event} e send the mouse event that generate the finalize down, so it can be used in the event + */ + _finalizeCurrentTransform: function(e) { + + var transform = this._currentTransform, + target = transform.target, + options = { + e: e, + target: target, + transform: transform, + action: transform.action, + }; + + if (target._scaling) { + target._scaling = false; + } + + target.setCoords(); + + if (transform.actionPerformed || (this.stateful && target.hasStateChanged())) { + this._fire('modified', options); + } + }, + + /** + * @private + * @param {Event} e Event object fired on mousedown + */ + _onMouseDownInDrawingMode: function(e) { + this._isCurrentlyDrawing = true; + if (this.getActiveObject()) { + this.discardActiveObject(e).requestRenderAll(); + } + var pointer = this.getPointer(e); + this.freeDrawingBrush.onMouseDown(pointer, { e: e, pointer: pointer }); + this._handleEvent(e, 'down'); + }, + + /** + * @private + * @param {Event} e Event object fired on mousemove + */ + _onMouseMoveInDrawingMode: function(e) { + if (this._isCurrentlyDrawing) { + var pointer = this.getPointer(e); + this.freeDrawingBrush.onMouseMove(pointer, { e: e, pointer: pointer }); + } + this.setCursor(this.freeDrawingCursor); + this._handleEvent(e, 'move'); + }, + + /** + * @private + * @param {Event} e Event object fired on mouseup + */ + _onMouseUpInDrawingMode: function(e) { + var pointer = this.getPointer(e); + this._isCurrentlyDrawing = this.freeDrawingBrush.onMouseUp({ e: e, pointer: pointer }); + this._handleEvent(e, 'up'); + }, + + /** + * Method that defines the actions when mouse is clicked on canvas. + * The method inits the currentTransform parameters and renders all the + * canvas so the current image can be placed on the top canvas and the rest + * in on the container one. + * @private + * @param {Event} e Event object fired on mousedown + */ + __onMouseDown: function (e) { + this._cacheTransformEventData(e); + this._handleEvent(e, 'down:before'); + var target = this._target; + // if right click just fire events + if (checkClick(e, RIGHT_CLICK)) { + if (this.fireRightClick) { + this._handleEvent(e, 'down', RIGHT_CLICK); + } + return; + } + + if (checkClick(e, MIDDLE_CLICK)) { + if (this.fireMiddleClick) { + this._handleEvent(e, 'down', MIDDLE_CLICK); + } + return; + } + + if (this.isDrawingMode) { + this._onMouseDownInDrawingMode(e); + return; + } + + if (!this._isMainEvent(e)) { + return; + } + + // ignore if some object is being transformed at this moment + if (this._currentTransform) { + return; + } + + var pointer = this._pointer; + // save pointer for check in __onMouseUp event + this._previousPointer = pointer; + var shouldRender = this._shouldRender(target), + shouldGroup = this._shouldGroup(e, target); + if (this._shouldClearSelection(e, target)) { + this.discardActiveObject(e); + } + else if (shouldGroup) { + this._handleGrouping(e, target); + target = this._activeObject; + } + + if (this.selection && (!target || + (!target.selectable && !target.isEditing && target !== this._activeObject))) { + this._groupSelector = { + ex: this._absolutePointer.x, + ey: this._absolutePointer.y, + top: 0, + left: 0 + }; + } + + if (target) { + var alreadySelected = target === this._activeObject; + if (target.selectable && target.activeOn === 'down') { + this.setActiveObject(target, e); + } + var corner = target._findTargetCorner( + this.getPointer(e, true), + fabric.util.isTouchEvent(e) + ); + target.__corner = corner; + if (target === this._activeObject && (corner || !shouldGroup)) { + this._setupCurrentTransform(e, target, alreadySelected); + var control = target.controls[corner], + pointer = this.getPointer(e), + mouseDownHandler = control && control.getMouseDownHandler(e, target, control); + if (mouseDownHandler) { + mouseDownHandler(e, this._currentTransform, pointer.x, pointer.y); + } + } + } + this._handleEvent(e, 'down'); + // we must renderAll so that we update the visuals + (shouldRender || shouldGroup) && this.requestRenderAll(); + }, + + /** + * reset cache form common information needed during event processing + * @private + */ + _resetTransformEventData: function() { + this._target = null; + this._pointer = null; + this._absolutePointer = null; + }, + + /** + * Cache common information needed during event processing + * @private + * @param {Event} e Event object fired on event + */ + _cacheTransformEventData: function(e) { + // reset in order to avoid stale caching + this._resetTransformEventData(); + this._pointer = this.getPointer(e, true); + this._absolutePointer = this.restorePointerVpt(this._pointer); + this._target = this._currentTransform ? this._currentTransform.target : this.findTarget(e) || null; + }, + + /** + * @private + */ + _beforeTransform: function(e) { + var t = this._currentTransform; + this.stateful && t.target.saveState(); + this.fire('before:transform', { + e: e, + transform: t, + }); + }, + + /** + * Method that defines the actions when mouse is hovering the canvas. + * The currentTransform parameter will define whether the user is rotating/scaling/translating + * an image or neither of them (only hovering). A group selection is also possible and would cancel + * all any other type of action. + * In case of an image transformation only the top canvas will be rendered. + * @private + * @param {Event} e Event object fired on mousemove + */ + __onMouseMove: function (e) { + this._handleEvent(e, 'move:before'); + this._cacheTransformEventData(e); + var target, pointer; + + if (this.isDrawingMode) { + this._onMouseMoveInDrawingMode(e); + return; + } + + if (!this._isMainEvent(e)) { + return; + } + + var groupSelector = this._groupSelector; + + // We initially clicked in an empty area, so we draw a box for multiple selection + if (groupSelector) { + pointer = this._absolutePointer; + + groupSelector.left = pointer.x - groupSelector.ex; + groupSelector.top = pointer.y - groupSelector.ey; + + this.renderTop(); + } + else if (!this._currentTransform) { + target = this.findTarget(e) || null; + this._setCursorFromEvent(e, target); + this._fireOverOutEvents(target, e); + } + else { + this._transformObject(e); + } + this._handleEvent(e, 'move'); + this._resetTransformEventData(); + }, + + /** + * Manage the mouseout, mouseover events for the fabric object on the canvas + * @param {Fabric.Object} target the target where the target from the mousemove event + * @param {Event} e Event object fired on mousemove + * @private + */ + _fireOverOutEvents: function(target, e) { + var _hoveredTarget = this._hoveredTarget, + _hoveredTargets = this._hoveredTargets, targets = this.targets, + length = Math.max(_hoveredTargets.length, targets.length); + + this.fireSyntheticInOutEvents(target, e, { + oldTarget: _hoveredTarget, + evtOut: 'mouseout', + canvasEvtOut: 'mouse:out', + evtIn: 'mouseover', + canvasEvtIn: 'mouse:over', + }); + for (var i = 0; i < length; i++){ + this.fireSyntheticInOutEvents(targets[i], e, { + oldTarget: _hoveredTargets[i], + evtOut: 'mouseout', + evtIn: 'mouseover', + }); + } + this._hoveredTarget = target; + this._hoveredTargets = this.targets.concat(); + }, + + /** + * Manage the dragEnter, dragLeave events for the fabric objects on the canvas + * @param {Fabric.Object} target the target where the target from the onDrag event + * @param {Event} e Event object fired on ondrag + * @private + */ + _fireEnterLeaveEvents: function(target, e) { + var _draggedoverTarget = this._draggedoverTarget, + _hoveredTargets = this._hoveredTargets, targets = this.targets, + length = Math.max(_hoveredTargets.length, targets.length); + + this.fireSyntheticInOutEvents(target, e, { + oldTarget: _draggedoverTarget, + evtOut: 'dragleave', + evtIn: 'dragenter', + }); + for (var i = 0; i < length; i++) { + this.fireSyntheticInOutEvents(targets[i], e, { + oldTarget: _hoveredTargets[i], + evtOut: 'dragleave', + evtIn: 'dragenter', + }); + } + this._draggedoverTarget = target; + }, + + /** + * Manage the synthetic in/out events for the fabric objects on the canvas + * @param {Fabric.Object} target the target where the target from the supported events + * @param {Event} e Event object fired + * @param {Object} config configuration for the function to work + * @param {String} config.targetName property on the canvas where the old target is stored + * @param {String} [config.canvasEvtOut] name of the event to fire at canvas level for out + * @param {String} config.evtOut name of the event to fire for out + * @param {String} [config.canvasEvtIn] name of the event to fire at canvas level for in + * @param {String} config.evtIn name of the event to fire for in + * @private + */ + fireSyntheticInOutEvents: function(target, e, config) { + var inOpt, outOpt, oldTarget = config.oldTarget, outFires, inFires, + targetChanged = oldTarget !== target, canvasEvtIn = config.canvasEvtIn, canvasEvtOut = config.canvasEvtOut; + if (targetChanged) { + inOpt = { e: e, target: target, previousTarget: oldTarget }; + outOpt = { e: e, target: oldTarget, nextTarget: target }; + } + inFires = target && targetChanged; + outFires = oldTarget && targetChanged; + if (outFires) { + canvasEvtOut && this.fire(canvasEvtOut, outOpt); + oldTarget.fire(config.evtOut, outOpt); + } + if (inFires) { + canvasEvtIn && this.fire(canvasEvtIn, inOpt); + target.fire(config.evtIn, inOpt); + } + }, + + /** + * Method that defines actions when an Event Mouse Wheel + * @param {Event} e Event object fired on mouseup + */ + __onMouseWheel: function(e) { + this._cacheTransformEventData(e); + this._handleEvent(e, 'wheel'); + this._resetTransformEventData(); + }, + + /** + * @private + * @param {Event} e Event fired on mousemove + */ + _transformObject: function(e) { + var pointer = this.getPointer(e), + transform = this._currentTransform; + + transform.reset = false; + transform.shiftKey = e.shiftKey; + transform.altKey = e[this.centeredKey]; + + this._performTransformAction(e, transform, pointer); + transform.actionPerformed && this.requestRenderAll(); + }, + + /** + * @private + */ + _performTransformAction: function(e, transform, pointer) { + var x = pointer.x, + y = pointer.y, + action = transform.action, + actionPerformed = false, + actionHandler = transform.actionHandler; + // this object could be created from the function in the control handlers + + + if (actionHandler) { + actionPerformed = actionHandler(e, transform, x, y); + } + if (action === 'drag' && actionPerformed) { + transform.target.isMoving = true; + this.setCursor(transform.target.moveCursor || this.moveCursor); + } + transform.actionPerformed = transform.actionPerformed || actionPerformed; + }, + + /** + * @private + */ + _fire: fabric.controlsUtils.fireEvent, + + /** + * Sets the cursor depending on where the canvas is being hovered. + * Note: very buggy in Opera + * @param {Event} e Event object + * @param {Object} target Object that the mouse is hovering, if so. + */ + _setCursorFromEvent: function (e, target) { + if (!target) { + this.setCursor(this.defaultCursor); + return false; + } + var hoverCursor = target.hoverCursor || this.hoverCursor, + activeSelection = this._activeObject && this._activeObject.type === 'activeSelection' ? + this._activeObject : null, + // only show proper corner when group selection is not active + corner = (!activeSelection || !activeSelection.contains(target)) + // here we call findTargetCorner always with undefined for the touch parameter. + // we assume that if you are using a cursor you do not need to interact with + // the bigger touch area. + && target._findTargetCorner(this.getPointer(e, true)); + + if (!corner) { + if (target.subTargetCheck){ + // hoverCursor should come from top-most subTarget, + // so we walk the array backwards + this.targets.concat().reverse().map(function(_target){ + hoverCursor = _target.hoverCursor || hoverCursor; + }); + } + this.setCursor(hoverCursor); + } + else { + this.setCursor(this.getCornerCursor(corner, target, e)); + } + }, + + /** + * @private + */ + getCornerCursor: function(corner, target, e) { + var control = target.controls[corner]; + return control.cursorStyleHandler(e, control, target); + } + }); +})(); + + +(function() { + + var min = Math.min, + max = Math.max; + + fabric.util.object.extend(fabric.Canvas.prototype, /** @lends fabric.Canvas.prototype */ { + + /** + * @private + * @param {Event} e Event object + * @param {fabric.Object} target + * @return {Boolean} + */ + _shouldGroup: function(e, target) { + var activeObject = this._activeObject; + return activeObject && this._isSelectionKeyPressed(e) && target && target.selectable && this.selection && + (activeObject !== target || activeObject.type === 'activeSelection') && !target.onSelect({ e: e }); + }, + + /** + * @private + * @param {Event} e Event object + * @param {fabric.Object} target + */ + _handleGrouping: function (e, target) { + var activeObject = this._activeObject; + // avoid multi select when shift click on a corner + if (activeObject.__corner) { + return; + } + if (target === activeObject) { + // if it's a group, find target again, using activeGroup objects + target = this.findTarget(e, true); + // if even object is not found or we are on activeObjectCorner, bail out + if (!target || !target.selectable) { + return; + } + } + if (activeObject && activeObject.type === 'activeSelection') { + this._updateActiveSelection(target, e); + } + else { + this._createActiveSelection(target, e); + } + }, + + /** + * @private + */ + _updateActiveSelection: function(target, e) { + var activeSelection = this._activeObject, + currentActiveObjects = activeSelection._objects.slice(0); + if (activeSelection.contains(target)) { + activeSelection.removeWithUpdate(target); + this._hoveredTarget = target; + this._hoveredTargets = this.targets.concat(); + if (activeSelection.size() === 1) { + // activate last remaining object + this._setActiveObject(activeSelection.item(0), e); + } + } + else { + activeSelection.addWithUpdate(target); + this._hoveredTarget = activeSelection; + this._hoveredTargets = this.targets.concat(); + } + this._fireSelectionEvents(currentActiveObjects, e); + }, + + /** + * @private + */ + _createActiveSelection: function(target, e) { + var currentActives = this.getActiveObjects(), group = this._createGroup(target); + this._hoveredTarget = group; + // ISSUE 4115: should we consider subTargets here? + // this._hoveredTargets = []; + // this._hoveredTargets = this.targets.concat(); + this._setActiveObject(group, e); + this._fireSelectionEvents(currentActives, e); + }, + + /** + * @private + * @param {Object} target + */ + _createGroup: function(target) { + var objects = this._objects, + isActiveLower = objects.indexOf(this._activeObject) < objects.indexOf(target), + groupObjects = isActiveLower + ? [this._activeObject, target] + : [target, this._activeObject]; + this._activeObject.isEditing && this._activeObject.exitEditing(); + return new fabric.ActiveSelection(groupObjects, { + canvas: this + }); + }, + + /** + * @private + * @param {Event} e mouse event + */ + _groupSelectedObjects: function (e) { + + var group = this._collectObjects(e), + aGroup; + + // do not create group for 1 element only + if (group.length === 1) { + this.setActiveObject(group[0], e); + } + else if (group.length > 1) { + aGroup = new fabric.ActiveSelection(group.reverse(), { + canvas: this + }); + this.setActiveObject(aGroup, e); + } + }, + + /** + * @private + */ + _collectObjects: function(e) { + var group = [], + currentObject, + x1 = this._groupSelector.ex, + y1 = this._groupSelector.ey, + x2 = x1 + this._groupSelector.left, + y2 = y1 + this._groupSelector.top, + selectionX1Y1 = new fabric.Point(min(x1, x2), min(y1, y2)), + selectionX2Y2 = new fabric.Point(max(x1, x2), max(y1, y2)), + allowIntersect = !this.selectionFullyContained, + isClick = x1 === x2 && y1 === y2; + // we iterate reverse order to collect top first in case of click. + for (var i = this._objects.length; i--; ) { + currentObject = this._objects[i]; + + if (!currentObject || !currentObject.selectable || !currentObject.visible) { + continue; + } + + if ((allowIntersect && currentObject.intersectsWithRect(selectionX1Y1, selectionX2Y2, true)) || + currentObject.isContainedWithinRect(selectionX1Y1, selectionX2Y2, true) || + (allowIntersect && currentObject.containsPoint(selectionX1Y1, null, true)) || + (allowIntersect && currentObject.containsPoint(selectionX2Y2, null, true)) + ) { + group.push(currentObject); + // only add one object if it's a click + if (isClick) { + break; + } + } + } + + if (group.length > 1) { + group = group.filter(function(object) { + return !object.onSelect({ e: e }); + }); + } + + return group; + }, + + /** + * @private + */ + _maybeGroupObjects: function(e) { + if (this.selection && this._groupSelector) { + this._groupSelectedObjects(e); + } + this.setCursor(this.defaultCursor); + // clear selection and current transformation + this._groupSelector = null; + } + }); + +})(); + + +(function () { + fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ { + + /** + * Exports canvas element to a dataurl image. Note that when multiplier is used, cropping is scaled appropriately + * @param {Object} [options] Options object + * @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png" + * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg. + * @param {Number} [options.multiplier=1] Multiplier to scale by, to have consistent + * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 + * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 + * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 + * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 + * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 2.0.0 + * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format + * @see {@link http://jsfiddle.net/fabricjs/NfZVb/|jsFiddle demo} + * @example Generate jpeg dataURL with lower quality + * var dataURL = canvas.toDataURL({ + * format: 'jpeg', + * quality: 0.8 + * }); + * @example Generate cropped png dataURL (clipping of canvas) + * var dataURL = canvas.toDataURL({ + * format: 'png', + * left: 100, + * top: 100, + * width: 200, + * height: 200 + * }); + * @example Generate double scaled png dataURL + * var dataURL = canvas.toDataURL({ + * format: 'png', + * multiplier: 2 + * }); + */ + toDataURL: function (options) { + options || (options = { }); + + var format = options.format || 'png', + quality = options.quality || 1, + multiplier = (options.multiplier || 1) * (options.enableRetinaScaling ? this.getRetinaScaling() : 1), + canvasEl = this.toCanvasElement(multiplier, options); + return fabric.util.toDataURL(canvasEl, format, quality); + }, + + /** + * Create a new HTMLCanvas element painted with the current canvas content. + * No need to resize the actual one or repaint it. + * Will transfer object ownership to a new canvas, paint it, and set everything back. + * This is an intermediary step used to get to a dataUrl but also it is useful to + * create quick image copies of a canvas without passing for the dataUrl string + * @param {Number} [multiplier] a zoom factor. + * @param {Object} [cropping] Cropping informations + * @param {Number} [cropping.left] Cropping left offset. + * @param {Number} [cropping.top] Cropping top offset. + * @param {Number} [cropping.width] Cropping width. + * @param {Number} [cropping.height] Cropping height. + */ + toCanvasElement: function(multiplier, cropping) { + multiplier = multiplier || 1; + cropping = cropping || { }; + var scaledWidth = (cropping.width || this.width) * multiplier, + scaledHeight = (cropping.height || this.height) * multiplier, + zoom = this.getZoom(), + originalWidth = this.width, + originalHeight = this.height, + newZoom = zoom * multiplier, + vp = this.viewportTransform, + translateX = (vp[4] - (cropping.left || 0)) * multiplier, + translateY = (vp[5] - (cropping.top || 0)) * multiplier, + originalInteractive = this.interactive, + newVp = [newZoom, 0, 0, newZoom, translateX, translateY], + originalRetina = this.enableRetinaScaling, + canvasEl = fabric.util.createCanvasElement(), + originalContextTop = this.contextTop; + canvasEl.width = scaledWidth; + canvasEl.height = scaledHeight; + this.contextTop = null; + this.enableRetinaScaling = false; + this.interactive = false; + this.viewportTransform = newVp; + this.width = scaledWidth; + this.height = scaledHeight; + this.calcViewportBoundaries(); + this.renderCanvas(canvasEl.getContext('2d'), this._objects); + this.viewportTransform = vp; + this.width = originalWidth; + this.height = originalHeight; + this.calcViewportBoundaries(); + this.interactive = originalInteractive; + this.enableRetinaScaling = originalRetina; + this.contextTop = originalContextTop; + return canvasEl; + }, + }); + +})(); + + +fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ { + /** + * Populates canvas with data from the specified JSON. + * JSON format must conform to the one of {@link fabric.Canvas#toJSON} + * @param {String|Object} json JSON string or object + * @param {Function} callback Callback, invoked when json is parsed + * and corresponding objects (e.g: {@link fabric.Image}) + * are initialized + * @param {Function} [reviver] Method for further parsing of JSON elements, called after each fabric object created. + * @return {fabric.Canvas} instance + * @chainable + * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#deserialization} + * @see {@link http://jsfiddle.net/fabricjs/fmgXt/|jsFiddle demo} + * @example loadFromJSON + * canvas.loadFromJSON(json, canvas.renderAll.bind(canvas)); + * @example loadFromJSON with reviver + * canvas.loadFromJSON(json, canvas.renderAll.bind(canvas), function(o, object) { + * // `o` = json object + * // `object` = fabric.Object instance + * // ... do some stuff ... + * }); + */ + loadFromJSON: function (json, callback, reviver) { + if (!json) { + return; + } + + // serialize if it wasn't already + var serialized = (typeof json === 'string') + ? JSON.parse(json) + : fabric.util.object.clone(json); + + var _this = this, + clipPath = serialized.clipPath, + renderOnAddRemove = this.renderOnAddRemove; + + this.renderOnAddRemove = false; + + delete serialized.clipPath; + + this._enlivenObjects(serialized.objects, function (enlivenedObjects) { + _this.clear(); + _this._setBgOverlay(serialized, function () { + if (clipPath) { + _this._enlivenObjects([clipPath], function (enlivenedCanvasClip) { + _this.clipPath = enlivenedCanvasClip[0]; + _this.__setupCanvas.call(_this, serialized, enlivenedObjects, renderOnAddRemove, callback); + }); + } + else { + _this.__setupCanvas.call(_this, serialized, enlivenedObjects, renderOnAddRemove, callback); + } + }); + }, reviver); + return this; + }, + + /** + * @private + * @param {Object} serialized Object with background and overlay information + * @param {Array} restored canvas objects + * @param {Function} cached renderOnAddRemove callback + * @param {Function} callback Invoked after all background and overlay images/patterns loaded + */ + __setupCanvas: function(serialized, enlivenedObjects, renderOnAddRemove, callback) { + var _this = this; + enlivenedObjects.forEach(function(obj, index) { + // we splice the array just in case some custom classes restored from JSON + // will add more object to canvas at canvas init. + _this.insertAt(obj, index); + }); + this.renderOnAddRemove = renderOnAddRemove; + // remove parts i cannot set as options + delete serialized.objects; + delete serialized.backgroundImage; + delete serialized.overlayImage; + delete serialized.background; + delete serialized.overlay; + // this._initOptions does too many things to just + // call it. Normally loading an Object from JSON + // create the Object instance. Here the Canvas is + // already an instance and we are just loading things over it + this._setOptions(serialized); + this.renderAll(); + callback && callback(); + }, + + /** + * @private + * @param {Object} serialized Object with background and overlay information + * @param {Function} callback Invoked after all background and overlay images/patterns loaded + */ + _setBgOverlay: function(serialized, callback) { + var loaded = { + backgroundColor: false, + overlayColor: false, + backgroundImage: false, + overlayImage: false + }; + + if (!serialized.backgroundImage && !serialized.overlayImage && !serialized.background && !serialized.overlay) { + callback && callback(); + return; + } + + var cbIfLoaded = function () { + if (loaded.backgroundImage && loaded.overlayImage && loaded.backgroundColor && loaded.overlayColor) { + callback && callback(); + } + }; + + this.__setBgOverlay('backgroundImage', serialized.backgroundImage, loaded, cbIfLoaded); + this.__setBgOverlay('overlayImage', serialized.overlayImage, loaded, cbIfLoaded); + this.__setBgOverlay('backgroundColor', serialized.background, loaded, cbIfLoaded); + this.__setBgOverlay('overlayColor', serialized.overlay, loaded, cbIfLoaded); + }, + + /** + * @private + * @param {String} property Property to set (backgroundImage, overlayImage, backgroundColor, overlayColor) + * @param {(Object|String)} value Value to set + * @param {Object} loaded Set loaded property to true if property is set + * @param {Object} callback Callback function to invoke after property is set + */ + __setBgOverlay: function(property, value, loaded, callback) { + var _this = this; + + if (!value) { + loaded[property] = true; + callback && callback(); + return; + } + + if (property === 'backgroundImage' || property === 'overlayImage') { + fabric.util.enlivenObjects([value], function(enlivedObject){ + _this[property] = enlivedObject[0]; + loaded[property] = true; + callback && callback(); + }); + } + else { + this['set' + fabric.util.string.capitalize(property, true)](value, function() { + loaded[property] = true; + callback && callback(); + }); + } + }, + + /** + * @private + * @param {Array} objects + * @param {Function} callback + * @param {Function} [reviver] + */ + _enlivenObjects: function (objects, callback, reviver) { + if (!objects || objects.length === 0) { + callback && callback([]); + return; + } + + fabric.util.enlivenObjects(objects, function(enlivenedObjects) { + callback && callback(enlivenedObjects); + }, null, reviver); + }, + + /** + * @private + * @param {String} format + * @param {Function} callback + */ + _toDataURL: function (format, callback) { + this.clone(function (clone) { + callback(clone.toDataURL(format)); + }); + }, + + /** + * @private + * @param {String} format + * @param {Number} multiplier + * @param {Function} callback + */ + _toDataURLWithMultiplier: function (format, multiplier, callback) { + this.clone(function (clone) { + callback(clone.toDataURLWithMultiplier(format, multiplier)); + }); + }, + + /** + * Clones canvas instance + * @param {Object} [callback] Receives cloned instance as a first argument + * @param {Array} [properties] Array of properties to include in the cloned canvas and children + */ + clone: function (callback, properties) { + var data = JSON.stringify(this.toJSON(properties)); + this.cloneWithoutData(function(clone) { + clone.loadFromJSON(data, function() { + callback && callback(clone); + }); + }); + }, + + /** + * Clones canvas instance without cloning existing data. + * This essentially copies canvas dimensions, clipping properties, etc. + * but leaves data empty (so that you can populate it with your own) + * @param {Object} [callback] Receives cloned instance as a first argument + */ + cloneWithoutData: function(callback) { + var el = fabric.util.createCanvasElement(); + + el.width = this.width; + el.height = this.height; + + var clone = new fabric.Canvas(el); + if (this.backgroundImage) { + clone.setBackgroundImage(this.backgroundImage.src, function() { + clone.renderAll(); + callback && callback(clone); + }); + clone.backgroundImageOpacity = this.backgroundImageOpacity; + clone.backgroundImageStretch = this.backgroundImageStretch; + } + else { + callback && callback(clone); + } + } +}); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + extend = fabric.util.object.extend, + clone = fabric.util.object.clone, + toFixed = fabric.util.toFixed, + capitalize = fabric.util.string.capitalize, + degreesToRadians = fabric.util.degreesToRadians, + objectCaching = !fabric.isLikelyNode, + ALIASING_LIMIT = 2; + + if (fabric.Object) { + return; + } + + /** + * Root object class from which all 2d shape classes inherit from + * @class fabric.Object + * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#objects} + * @see {@link fabric.Object#initialize} for constructor definition + * + * @fires added + * @fires removed + * + * @fires selected + * @fires deselected + * @fires modified + * @fires modified + * @fires moved + * @fires scaled + * @fires rotated + * @fires skewed + * + * @fires rotating + * @fires scaling + * @fires moving + * @fires skewing + * + * @fires mousedown + * @fires mouseup + * @fires mouseover + * @fires mouseout + * @fires mousewheel + * @fires mousedblclick + * + * @fires dragover + * @fires dragenter + * @fires dragleave + * @fires drop + */ + fabric.Object = fabric.util.createClass(fabric.CommonMethods, /** @lends fabric.Object.prototype */ { + + /** + * Type of an object (rect, circle, path, etc.). + * Note that this property is meant to be read-only and not meant to be modified. + * If you modify, certain parts of Fabric (such as JSON loading) won't work correctly. + * @type String + * @default + */ + type: 'object', + + /** + * Horizontal origin of transformation of an object (one of "left", "right", "center") + * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups + * @type String + * @default + */ + originX: 'left', + + /** + * Vertical origin of transformation of an object (one of "top", "bottom", "center") + * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups + * @type String + * @default + */ + originY: 'top', + + /** + * Top position of an object. Note that by default it's relative to object top. You can change this by setting originY={top/center/bottom} + * @type Number + * @default + */ + top: 0, + + /** + * Left position of an object. Note that by default it's relative to object left. You can change this by setting originX={left/center/right} + * @type Number + * @default + */ + left: 0, + + /** + * Object width + * @type Number + * @default + */ + width: 0, + + /** + * Object height + * @type Number + * @default + */ + height: 0, + + /** + * Object scale factor (horizontal) + * @type Number + * @default + */ + scaleX: 1, + + /** + * Object scale factor (vertical) + * @type Number + * @default + */ + scaleY: 1, + + /** + * When true, an object is rendered as flipped horizontally + * @type Boolean + * @default + */ + flipX: false, + + /** + * When true, an object is rendered as flipped vertically + * @type Boolean + * @default + */ + flipY: false, + + /** + * Opacity of an object + * @type Number + * @default + */ + opacity: 1, + + /** + * Angle of rotation of an object (in degrees) + * @type Number + * @default + */ + angle: 0, + + /** + * Angle of skew on x axes of an object (in degrees) + * @type Number + * @default + */ + skewX: 0, + + /** + * Angle of skew on y axes of an object (in degrees) + * @type Number + * @default + */ + skewY: 0, + + /** + * Size of object's controlling corners (in pixels) + * @type Number + * @default + */ + cornerSize: 13, + + /** + * Size of object's controlling corners when touch interaction is detected + * @type Number + * @default + */ + touchCornerSize: 24, + + /** + * When true, object's controlling corners are rendered as transparent inside (i.e. stroke instead of fill) + * @type Boolean + * @default + */ + transparentCorners: true, + + /** + * Default cursor value used when hovering over this object on canvas + * @type String + * @default + */ + hoverCursor: null, + + /** + * Default cursor value used when moving this object on canvas + * @type String + * @default + */ + moveCursor: null, + + /** + * Padding between object and its controlling borders (in pixels) + * @type Number + * @default + */ + padding: 0, + + /** + * Color of controlling borders of an object (when it's active) + * @type String + * @default + */ + borderColor: 'rgb(178,204,255)', + + /** + * Array specifying dash pattern of an object's borders (hasBorder must be true) + * @since 1.6.2 + * @type Array + */ + borderDashArray: null, + + /** + * Color of controlling corners of an object (when it's active) + * @type String + * @default + */ + cornerColor: 'rgb(178,204,255)', + + /** + * Color of controlling corners of an object (when it's active and transparentCorners false) + * @since 1.6.2 + * @type String + * @default + */ + cornerStrokeColor: null, + + /** + * Specify style of control, 'rect' or 'circle' + * @since 1.6.2 + * @type String + */ + cornerStyle: 'rect', + + /** + * Array specifying dash pattern of an object's control (hasBorder must be true) + * @since 1.6.2 + * @type Array + */ + cornerDashArray: null, + + /** + * When true, this object will use center point as the origin of transformation + * when being scaled via the controls. + * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). + * @since 1.3.4 + * @type Boolean + * @default + */ + centeredScaling: false, + + /** + * When true, this object will use center point as the origin of transformation + * when being rotated via the controls. + * Backwards incompatibility note: This property replaces "centerTransform" (Boolean). + * @since 1.3.4 + * @type Boolean + * @default + */ + centeredRotation: true, + + /** + * Color of object's fill + * takes css colors https://www.w3.org/TR/css-color-3/ + * @type String + * @default + */ + fill: 'rgb(0,0,0)', + + /** + * Fill rule used to fill an object + * accepted values are nonzero, evenodd + * Backwards incompatibility note: This property was used for setting globalCompositeOperation until v1.4.12 (use `fabric.Object#globalCompositeOperation` instead) + * @type String + * @default + */ + fillRule: 'nonzero', + + /** + * Composite rule used for canvas globalCompositeOperation + * @type String + * @default + */ + globalCompositeOperation: 'source-over', + + /** + * Background color of an object. + * takes css colors https://www.w3.org/TR/css-color-3/ + * @type String + * @default + */ + backgroundColor: '', + + /** + * Selection Background color of an object. colored layer behind the object when it is active. + * does not mix good with globalCompositeOperation methods. + * @type String + * @default + */ + selectionBackgroundColor: '', + + /** + * When defined, an object is rendered via stroke and this property specifies its color + * takes css colors https://www.w3.org/TR/css-color-3/ + * @type String + * @default + */ + stroke: null, + + /** + * Width of a stroke used to render this object + * @type Number + * @default + */ + strokeWidth: 1, + + /** + * Array specifying dash pattern of an object's stroke (stroke must be defined) + * @type Array + */ + strokeDashArray: null, + + /** + * Line offset of an object's stroke + * @type Number + * @default + */ + strokeDashOffset: 0, + + /** + * Line endings style of an object's stroke (one of "butt", "round", "square") + * @type String + * @default + */ + strokeLineCap: 'butt', + + /** + * Corner style of an object's stroke (one of "bevel", "round", "miter") + * @type String + * @default + */ + strokeLineJoin: 'miter', + + /** + * Maximum miter length (used for strokeLineJoin = "miter") of an object's stroke + * @type Number + * @default + */ + strokeMiterLimit: 4, + + /** + * Shadow object representing shadow of this shape + * @type fabric.Shadow + * @default + */ + shadow: null, + + /** + * Opacity of object's controlling borders when object is active and moving + * @type Number + * @default + */ + borderOpacityWhenMoving: 0.4, + + /** + * Scale factor of object's controlling borders + * bigger number will make a thicker border + * border is 1, so this is basically a border thickness + * since there is no way to change the border itself. + * @type Number + * @default + */ + borderScaleFactor: 1, + + /** + * Minimum allowed scale value of an object + * @type Number + * @default + */ + minScaleLimit: 0, + + /** + * When set to `false`, an object can not be selected for modification (using either point-click-based or group-based selection). + * But events still fire on it. + * @type Boolean + * @default + */ + selectable: true, + + /** + * When set to `false`, an object can not be a target of events. All events propagate through it. Introduced in v1.3.4 + * @type Boolean + * @default + */ + evented: true, + + /** + * When set to `false`, an object is not rendered on canvas + * @type Boolean + * @default + */ + visible: true, + + /** + * When set to `false`, object's controls are not displayed and can not be used to manipulate object + * @type Boolean + * @default + */ + hasControls: true, + + /** + * When set to `false`, object's controlling borders are not rendered + * @type Boolean + * @default + */ + hasBorders: true, + + /** + * When set to `true`, objects are "found" on canvas on per-pixel basis rather than according to bounding box + * @type Boolean + * @default + */ + perPixelTargetFind: false, + + /** + * When `false`, default object's values are not included in its serialization + * @type Boolean + * @default + */ + includeDefaultValues: true, + + /** + * When `true`, object horizontal movement is locked + * @type Boolean + * @default + */ + lockMovementX: false, + + /** + * When `true`, object vertical movement is locked + * @type Boolean + * @default + */ + lockMovementY: false, + + /** + * When `true`, object rotation is locked + * @type Boolean + * @default + */ + lockRotation: false, + + /** + * When `true`, object horizontal scaling is locked + * @type Boolean + * @default + */ + lockScalingX: false, + + /** + * When `true`, object vertical scaling is locked + * @type Boolean + * @default + */ + lockScalingY: false, + + /** + * When `true`, object horizontal skewing is locked + * @type Boolean + * @default + */ + lockSkewingX: false, + + /** + * When `true`, object vertical skewing is locked + * @type Boolean + * @default + */ + lockSkewingY: false, + + /** + * When `true`, object cannot be flipped by scaling into negative values + * @type Boolean + * @default + */ + lockScalingFlip: false, + + /** + * When `true`, object is not exported in OBJECT/JSON + * @since 1.6.3 + * @type Boolean + * @default + */ + excludeFromExport: false, + + /** + * When `true`, object is cached on an additional canvas. + * When `false`, object is not cached unless necessary ( clipPath ) + * default to true + * @since 1.7.0 + * @type Boolean + * @default true + */ + objectCaching: objectCaching, + + /** + * When `true`, object properties are checked for cache invalidation. In some particular + * situation you may want this to be disabled ( spray brush, very big, groups) + * or if your application does not allow you to modify properties for groups child you want + * to disable it for groups. + * default to false + * since 1.7.0 + * @type Boolean + * @default false + */ + statefullCache: false, + + /** + * When `true`, cache does not get updated during scaling. The picture will get blocky if scaled + * too much and will be redrawn with correct details at the end of scaling. + * this setting is performance and application dependant. + * default to true + * since 1.7.0 + * @type Boolean + * @default true + */ + noScaleCache: true, + + /** + * When `false`, the stoke width will scale with the object. + * When `true`, the stroke will always match the exact pixel size entered for stroke width. + * this Property does not work on Text classes or drawing call that uses strokeText,fillText methods + * default to false + * @since 2.6.0 + * @type Boolean + * @default false + * @type Boolean + * @default false + */ + strokeUniform: false, + + /** + * When set to `true`, object's cache will be rerendered next render call. + * since 1.7.0 + * @type Boolean + * @default true + */ + dirty: true, + + /** + * keeps the value of the last hovered corner during mouse move. + * 0 is no corner, or 'mt', 'ml', 'mtr' etc.. + * It should be private, but there is no harm in using it as + * a read-only property. + * @type number|string|any + * @default 0 + */ + __corner: 0, + + /** + * Determines if the fill or the stroke is drawn first (one of "fill" or "stroke") + * @type String + * @default + */ + paintFirst: 'fill', + + /** + * When 'down', object is set to active on mousedown/touchstart + * When 'up', object is set to active on mouseup/touchend + * Experimental. Let's see if this breaks anything before supporting officially + * @private + * since 4.4.0 + * @type String + * @default 'down' + */ + activeOn: 'down', + + /** + * List of properties to consider when checking if state + * of an object is changed (fabric.Object#hasStateChanged) + * as well as for history (undo/redo) purposes + * @type Array + */ + stateProperties: ( + 'top left width height scaleX scaleY flipX flipY originX originY transformMatrix ' + + 'stroke strokeWidth strokeDashArray strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit ' + + 'angle opacity fill globalCompositeOperation shadow visible backgroundColor ' + + 'skewX skewY fillRule paintFirst clipPath strokeUniform' + ).split(' '), + + /** + * List of properties to consider when checking if cache needs refresh + * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single + * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty + * and refreshed at the next render + * @type Array + */ + cacheProperties: ( + 'fill stroke strokeWidth strokeDashArray width height paintFirst strokeUniform' + + ' strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit backgroundColor clipPath' + ).split(' '), + + /** + * List of properties to consider for animating colors. + * @type Array + */ + colorProperties: ( + 'fill stroke backgroundColor' + ).split(' '), + + /** + * a fabricObject that, without stroke define a clipping area with their shape. filled in black + * the clipPath object gets used when the object has rendered, and the context is placed in the center + * of the object cacheCanvas. + * If you want 0,0 of a clipPath to align with an object center, use clipPath.originX/Y to 'center' + * @type fabric.Object + */ + clipPath: undefined, + + /** + * Meaningful ONLY when the object is used as clipPath. + * if true, the clipPath will make the object clip to the outside of the clipPath + * since 2.4.0 + * @type boolean + * @default false + */ + inverted: false, + + /** + * Meaningful ONLY when the object is used as clipPath. + * if true, the clipPath will have its top and left relative to canvas, and will + * not be influenced by the object transform. This will make the clipPath relative + * to the canvas, but clipping just a particular object. + * WARNING this is beta, this feature may change or be renamed. + * since 2.4.0 + * @type boolean + * @default false + */ + absolutePositioned: false, + + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function(options) { + if (options) { + this.setOptions(options); + } + }, + + /** + * Create a the canvas used to keep the cached copy of the object + * @private + */ + _createCacheCanvas: function() { + this._cacheProperties = {}; + this._cacheCanvas = fabric.util.createCanvasElement(); + this._cacheContext = this._cacheCanvas.getContext('2d'); + this._updateCacheCanvas(); + // if canvas gets created, is empty, so dirty. + this.dirty = true; + }, + + /** + * Limit the cache dimensions so that X * Y do not cross fabric.perfLimitSizeTotal + * and each side do not cross fabric.cacheSideLimit + * those numbers are configurable so that you can get as much detail as you want + * making bargain with performances. + * @param {Object} dims + * @param {Object} dims.width width of canvas + * @param {Object} dims.height height of canvas + * @param {Object} dims.zoomX zoomX zoom value to unscale the canvas before drawing cache + * @param {Object} dims.zoomY zoomY zoom value to unscale the canvas before drawing cache + * @return {Object}.width width of canvas + * @return {Object}.height height of canvas + * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache + * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache + */ + _limitCacheSize: function(dims) { + var perfLimitSizeTotal = fabric.perfLimitSizeTotal, + width = dims.width, height = dims.height, + max = fabric.maxCacheSideLimit, min = fabric.minCacheSideLimit; + if (width <= max && height <= max && width * height <= perfLimitSizeTotal) { + if (width < min) { + dims.width = min; + } + if (height < min) { + dims.height = min; + } + return dims; + } + var ar = width / height, limitedDims = fabric.util.limitDimsByArea(ar, perfLimitSizeTotal), + capValue = fabric.util.capValue, + x = capValue(min, limitedDims.x, max), + y = capValue(min, limitedDims.y, max); + if (width > x) { + dims.zoomX /= width / x; + dims.width = x; + dims.capped = true; + } + if (height > y) { + dims.zoomY /= height / y; + dims.height = y; + dims.capped = true; + } + return dims; + }, + + /** + * Return the dimension and the zoom level needed to create a cache canvas + * big enough to host the object to be cached. + * @private + * @return {Object}.x width of object to be cached + * @return {Object}.y height of object to be cached + * @return {Object}.width width of canvas + * @return {Object}.height height of canvas + * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache + * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache + */ + _getCacheCanvasDimensions: function() { + var objectScale = this.getTotalObjectScaling(), + // caculate dimensions without skewing + dim = this._getTransformedDimensions(0, 0), + neededX = dim.x * objectScale.scaleX / this.scaleX, + neededY = dim.y * objectScale.scaleY / this.scaleY; + return { + // for sure this ALIASING_LIMIT is slightly creating problem + // in situation in which the cache canvas gets an upper limit + // also objectScale contains already scaleX and scaleY + width: neededX + ALIASING_LIMIT, + height: neededY + ALIASING_LIMIT, + zoomX: objectScale.scaleX, + zoomY: objectScale.scaleY, + x: neededX, + y: neededY + }; + }, + + /** + * Update width and height of the canvas for cache + * returns true or false if canvas needed resize. + * @private + * @return {Boolean} true if the canvas has been resized + */ + _updateCacheCanvas: function() { + var targetCanvas = this.canvas; + if (this.noScaleCache && targetCanvas && targetCanvas._currentTransform) { + var target = targetCanvas._currentTransform.target, + action = targetCanvas._currentTransform.action; + if (this === target && action.slice && action.slice(0, 5) === 'scale') { + return false; + } + } + var canvas = this._cacheCanvas, + dims = this._limitCacheSize(this._getCacheCanvasDimensions()), + minCacheSize = fabric.minCacheSideLimit, + width = dims.width, height = dims.height, drawingWidth, drawingHeight, + zoomX = dims.zoomX, zoomY = dims.zoomY, + dimensionsChanged = width !== this.cacheWidth || height !== this.cacheHeight, + zoomChanged = this.zoomX !== zoomX || this.zoomY !== zoomY, + shouldRedraw = dimensionsChanged || zoomChanged, + additionalWidth = 0, additionalHeight = 0, shouldResizeCanvas = false; + if (dimensionsChanged) { + var canvasWidth = this._cacheCanvas.width, + canvasHeight = this._cacheCanvas.height, + sizeGrowing = width > canvasWidth || height > canvasHeight, + sizeShrinking = (width < canvasWidth * 0.9 || height < canvasHeight * 0.9) && + canvasWidth > minCacheSize && canvasHeight > minCacheSize; + shouldResizeCanvas = sizeGrowing || sizeShrinking; + if (sizeGrowing && !dims.capped && (width > minCacheSize || height > minCacheSize)) { + additionalWidth = width * 0.1; + additionalHeight = height * 0.1; + } + } + if (this instanceof fabric.Text && this.path) { + shouldRedraw = true; + shouldResizeCanvas = true; + additionalWidth += this.getHeightOfLine(0) * this.zoomX; + additionalHeight += this.getHeightOfLine(0) * this.zoomY; + } + if (shouldRedraw) { + if (shouldResizeCanvas) { + canvas.width = Math.ceil(width + additionalWidth); + canvas.height = Math.ceil(height + additionalHeight); + } + else { + this._cacheContext.setTransform(1, 0, 0, 1, 0, 0); + this._cacheContext.clearRect(0, 0, canvas.width, canvas.height); + } + drawingWidth = dims.x / 2; + drawingHeight = dims.y / 2; + this.cacheTranslationX = Math.round(canvas.width / 2 - drawingWidth) + drawingWidth; + this.cacheTranslationY = Math.round(canvas.height / 2 - drawingHeight) + drawingHeight; + this.cacheWidth = width; + this.cacheHeight = height; + this._cacheContext.translate(this.cacheTranslationX, this.cacheTranslationY); + this._cacheContext.scale(zoomX, zoomY); + this.zoomX = zoomX; + this.zoomY = zoomY; + return true; + } + return false; + }, + + /** + * Sets object's properties from options + * @param {Object} [options] Options object + */ + setOptions: function(options) { + this._setOptions(options); + this._initGradient(options.fill, 'fill'); + this._initGradient(options.stroke, 'stroke'); + this._initPattern(options.fill, 'fill'); + this._initPattern(options.stroke, 'stroke'); + }, + + /** + * Transforms context when rendering an object + * @param {CanvasRenderingContext2D} ctx Context + */ + transform: function(ctx) { + var needFullTransform = (this.group && !this.group._transformDone) || + (this.group && this.canvas && ctx === this.canvas.contextTop); + var m = this.calcTransformMatrix(!needFullTransform); + ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); + }, + + /** + * Returns an object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toObject: function(propertiesToInclude) { + var NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS, + + object = { + type: this.type, + version: fabric.version, + originX: this.originX, + originY: this.originY, + left: toFixed(this.left, NUM_FRACTION_DIGITS), + top: toFixed(this.top, NUM_FRACTION_DIGITS), + width: toFixed(this.width, NUM_FRACTION_DIGITS), + height: toFixed(this.height, NUM_FRACTION_DIGITS), + fill: (this.fill && this.fill.toObject) ? this.fill.toObject() : this.fill, + stroke: (this.stroke && this.stroke.toObject) ? this.stroke.toObject() : this.stroke, + strokeWidth: toFixed(this.strokeWidth, NUM_FRACTION_DIGITS), + strokeDashArray: this.strokeDashArray ? this.strokeDashArray.concat() : this.strokeDashArray, + strokeLineCap: this.strokeLineCap, + strokeDashOffset: this.strokeDashOffset, + strokeLineJoin: this.strokeLineJoin, + strokeUniform: this.strokeUniform, + strokeMiterLimit: toFixed(this.strokeMiterLimit, NUM_FRACTION_DIGITS), + scaleX: toFixed(this.scaleX, NUM_FRACTION_DIGITS), + scaleY: toFixed(this.scaleY, NUM_FRACTION_DIGITS), + angle: toFixed(this.angle, NUM_FRACTION_DIGITS), + flipX: this.flipX, + flipY: this.flipY, + opacity: toFixed(this.opacity, NUM_FRACTION_DIGITS), + shadow: (this.shadow && this.shadow.toObject) ? this.shadow.toObject() : this.shadow, + visible: this.visible, + backgroundColor: this.backgroundColor, + fillRule: this.fillRule, + paintFirst: this.paintFirst, + globalCompositeOperation: this.globalCompositeOperation, + skewX: toFixed(this.skewX, NUM_FRACTION_DIGITS), + skewY: toFixed(this.skewY, NUM_FRACTION_DIGITS), + }; + + if (this.clipPath && !this.clipPath.excludeFromExport) { + object.clipPath = this.clipPath.toObject(propertiesToInclude); + object.clipPath.inverted = this.clipPath.inverted; + object.clipPath.absolutePositioned = this.clipPath.absolutePositioned; + } + + fabric.util.populateWithProperties(this, object, propertiesToInclude); + if (!this.includeDefaultValues) { + object = this._removeDefaultValues(object); + } + + return object; + }, + + /** + * Returns (dataless) object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toDatalessObject: function(propertiesToInclude) { + // will be overwritten by subclasses + return this.toObject(propertiesToInclude); + }, + + /** + * @private + * @param {Object} object + */ + _removeDefaultValues: function(object) { + var prototype = fabric.util.getKlass(object.type).prototype, + stateProperties = prototype.stateProperties; + stateProperties.forEach(function(prop) { + if (prop === 'left' || prop === 'top') { + return; + } + if (object[prop] === prototype[prop]) { + delete object[prop]; + } + var isArray = Object.prototype.toString.call(object[prop]) === '[object Array]' && + Object.prototype.toString.call(prototype[prop]) === '[object Array]'; + + // basically a check for [] === [] + if (isArray && object[prop].length === 0 && prototype[prop].length === 0) { + delete object[prop]; + } + }); + + return object; + }, + + /** + * Returns a string representation of an instance + * @return {String} + */ + toString: function() { + return '#'; + }, + + /** + * Return the object scale factor counting also the group scaling + * @return {Object} object with scaleX and scaleY properties + */ + getObjectScaling: function() { + // if the object is a top level one, on the canvas, we go for simple aritmetic + // otherwise the complex method with angles will return approximations and decimals + // and will likely kill the cache when not needed + // https://github.com/fabricjs/fabric.js/issues/7157 + if (!this.group) { + return { + scaleX: this.scaleX, + scaleY: this.scaleY, + }; + } + // if we are inside a group total zoom calculation is complex, we defer to generic matrices + var options = fabric.util.qrDecompose(this.calcTransformMatrix()); + return { scaleX: Math.abs(options.scaleX), scaleY: Math.abs(options.scaleY) }; + }, + + /** + * Return the object scale factor counting also the group scaling, zoom and retina + * @return {Object} object with scaleX and scaleY properties + */ + getTotalObjectScaling: function() { + var scale = this.getObjectScaling(), scaleX = scale.scaleX, scaleY = scale.scaleY; + if (this.canvas) { + var zoom = this.canvas.getZoom(); + var retina = this.canvas.getRetinaScaling(); + scaleX *= zoom * retina; + scaleY *= zoom * retina; + } + return { scaleX: scaleX, scaleY: scaleY }; + }, + + /** + * Return the object opacity counting also the group property + * @return {Number} + */ + getObjectOpacity: function() { + var opacity = this.opacity; + if (this.group) { + opacity *= this.group.getObjectOpacity(); + } + return opacity; + }, + + /** + * @private + * @param {String} key + * @param {*} value + * @return {fabric.Object} thisArg + */ + _set: function(key, value) { + var shouldConstrainValue = (key === 'scaleX' || key === 'scaleY'), + isChanged = this[key] !== value, groupNeedsUpdate = false; + + if (shouldConstrainValue) { + value = this._constrainScale(value); + } + if (key === 'scaleX' && value < 0) { + this.flipX = !this.flipX; + value *= -1; + } + else if (key === 'scaleY' && value < 0) { + this.flipY = !this.flipY; + value *= -1; + } + else if (key === 'shadow' && value && !(value instanceof fabric.Shadow)) { + value = new fabric.Shadow(value); + } + else if (key === 'dirty' && this.group) { + this.group.set('dirty', value); + } + + this[key] = value; + + if (isChanged) { + groupNeedsUpdate = this.group && this.group.isOnACache(); + if (this.cacheProperties.indexOf(key) > -1) { + this.dirty = true; + groupNeedsUpdate && this.group.set('dirty', true); + } + else if (groupNeedsUpdate && this.stateProperties.indexOf(key) > -1) { + this.group.set('dirty', true); + } + } + return this; + }, + + /** + * This callback function is called by the parent group of an object every + * time a non-delegated property changes on the group. It is passed the key + * and value as parameters. Not adding in this function's signature to avoid + * Travis build error about unused variables. + */ + setOnGroup: function() { + // implemented by sub-classes, as needed. + }, + + /** + * Retrieves viewportTransform from Object's canvas if possible + * @method getViewportTransform + * @memberOf fabric.Object.prototype + * @return {Array} + */ + getViewportTransform: function() { + if (this.canvas && this.canvas.viewportTransform) { + return this.canvas.viewportTransform; + } + return fabric.iMatrix.concat(); + }, + + /* + * @private + * return if the object would be visible in rendering + * @memberOf fabric.Object.prototype + * @return {Boolean} + */ + isNotVisible: function() { + return this.opacity === 0 || + (!this.width && !this.height && this.strokeWidth === 0) || + !this.visible; + }, + + /** + * Renders an object on a specified context + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + render: function(ctx) { + // do not render if width/height are zeros or object is not visible + if (this.isNotVisible()) { + return; + } + if (this.canvas && this.canvas.skipOffscreen && !this.group && !this.isOnScreen()) { + return; + } + ctx.save(); + this._setupCompositeOperation(ctx); + this.drawSelectionBackground(ctx); + this.transform(ctx); + this._setOpacity(ctx); + this._setShadow(ctx, this); + if (this.shouldCache()) { + this.renderCache(); + this.drawCacheOnCanvas(ctx); + } + else { + this._removeCacheCanvas(); + this.dirty = false; + this.drawObject(ctx); + if (this.objectCaching && this.statefullCache) { + this.saveState({ propertySet: 'cacheProperties' }); + } + } + ctx.restore(); + }, + + renderCache: function(options) { + options = options || {}; + if (!this._cacheCanvas) { + this._createCacheCanvas(); + } + if (this.isCacheDirty()) { + this.statefullCache && this.saveState({ propertySet: 'cacheProperties' }); + this.drawObject(this._cacheContext, options.forClipping); + this.dirty = false; + } + }, + + /** + * Remove cacheCanvas and its dimensions from the objects + */ + _removeCacheCanvas: function() { + this._cacheCanvas = null; + this.cacheWidth = 0; + this.cacheHeight = 0; + }, + + /** + * return true if the object will draw a stroke + * Does not consider text styles. This is just a shortcut used at rendering time + * We want it to be an approximation and be fast. + * wrote to avoid extra caching, it has to return true when stroke happens, + * can guess when it will not happen at 100% chance, does not matter if it misses + * some use case where the stroke is invisible. + * @since 3.0.0 + * @returns Boolean + */ + hasStroke: function() { + return this.stroke && this.stroke !== 'transparent' && this.strokeWidth !== 0; + }, + + /** + * return true if the object will draw a fill + * Does not consider text styles. This is just a shortcut used at rendering time + * We want it to be an approximation and be fast. + * wrote to avoid extra caching, it has to return true when fill happens, + * can guess when it will not happen at 100% chance, does not matter if it misses + * some use case where the fill is invisible. + * @since 3.0.0 + * @returns Boolean + */ + hasFill: function() { + return this.fill && this.fill !== 'transparent'; + }, + + /** + * When set to `true`, force the object to have its own cache, even if it is inside a group + * it may be needed when your object behave in a particular way on the cache and always needs + * its own isolated canvas to render correctly. + * Created to be overridden + * since 1.7.12 + * @returns Boolean + */ + needsItsOwnCache: function() { + if (this.paintFirst === 'stroke' && + this.hasFill() && this.hasStroke() && typeof this.shadow === 'object') { + return true; + } + if (this.clipPath) { + return true; + } + return false; + }, + + /** + * Decide if the object should cache or not. Create its own cache level + * objectCaching is a global flag, wins over everything + * needsItsOwnCache should be used when the object drawing method requires + * a cache step. None of the fabric classes requires it. + * Generally you do not cache objects in groups because the group outside is cached. + * Read as: cache if is needed, or if the feature is enabled but we are not already caching. + * @return {Boolean} + */ + shouldCache: function() { + this.ownCaching = this.needsItsOwnCache() || ( + this.objectCaching && + (!this.group || !this.group.isOnACache()) + ); + return this.ownCaching; + }, + + /** + * Check if this object or a child object will cast a shadow + * used by Group.shouldCache to know if child has a shadow recursively + * @return {Boolean} + */ + willDrawShadow: function() { + return !!this.shadow && (this.shadow.offsetX !== 0 || this.shadow.offsetY !== 0); + }, + + /** + * Execute the drawing operation for an object clipPath + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {fabric.Object} clipPath + */ + drawClipPathOnCache: function(ctx, clipPath) { + ctx.save(); + // DEBUG: uncomment this line, comment the following + // ctx.globalAlpha = 0.4 + if (clipPath.inverted) { + ctx.globalCompositeOperation = 'destination-out'; + } + else { + ctx.globalCompositeOperation = 'destination-in'; + } + //ctx.scale(1 / 2, 1 / 2); + if (clipPath.absolutePositioned) { + var m = fabric.util.invertTransform(this.calcTransformMatrix()); + ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]); + } + clipPath.transform(ctx); + ctx.scale(1 / clipPath.zoomX, 1 / clipPath.zoomY); + ctx.drawImage(clipPath._cacheCanvas, -clipPath.cacheTranslationX, -clipPath.cacheTranslationY); + ctx.restore(); + }, + + /** + * Execute the drawing operation for an object on a specified context + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawObject: function(ctx, forClipping) { + var originalFill = this.fill, originalStroke = this.stroke; + if (forClipping) { + this.fill = 'black'; + this.stroke = ''; + this._setClippingProperties(ctx); + } + else { + this._renderBackground(ctx); + } + this._render(ctx); + this._drawClipPath(ctx, this.clipPath); + this.fill = originalFill; + this.stroke = originalStroke; + }, + + /** + * Prepare clipPath state and cache and draw it on instance's cache + * @param {CanvasRenderingContext2D} ctx + * @param {fabric.Object} clipPath + */ + _drawClipPath: function (ctx, clipPath) { + if (!clipPath) { return; } + // needed to setup a couple of variables + // path canvas gets overridden with this one. + // TODO find a better solution? + clipPath.canvas = this.canvas; + clipPath.shouldCache(); + clipPath._transformDone = true; + clipPath.renderCache({ forClipping: true }); + this.drawClipPathOnCache(ctx, clipPath); + }, + + /** + * Paint the cached copy of the object on the target context. + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawCacheOnCanvas: function(ctx) { + ctx.scale(1 / this.zoomX, 1 / this.zoomY); + ctx.drawImage(this._cacheCanvas, -this.cacheTranslationX, -this.cacheTranslationY); + }, + + /** + * Check if cache is dirty + * @param {Boolean} skipCanvas skip canvas checks because this object is painted + * on parent canvas. + */ + isCacheDirty: function(skipCanvas) { + if (this.isNotVisible()) { + return false; + } + if (this._cacheCanvas && !skipCanvas && this._updateCacheCanvas()) { + // in this case the context is already cleared. + return true; + } + else { + if (this.dirty || + (this.clipPath && this.clipPath.absolutePositioned) || + (this.statefullCache && this.hasStateChanged('cacheProperties')) + ) { + if (this._cacheCanvas && !skipCanvas) { + var width = this.cacheWidth / this.zoomX; + var height = this.cacheHeight / this.zoomY; + this._cacheContext.clearRect(-width / 2, -height / 2, width, height); + } + return true; + } + } + return false; + }, + + /** + * Draws a background for the object big as its untransformed dimensions + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderBackground: function(ctx) { + if (!this.backgroundColor) { + return; + } + var dim = this._getNonTransformedDimensions(); + ctx.fillStyle = this.backgroundColor; + + ctx.fillRect( + -dim.x / 2, + -dim.y / 2, + dim.x, + dim.y + ); + // if there is background color no other shadows + // should be casted + this._removeShadow(ctx); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _setOpacity: function(ctx) { + if (this.group && !this.group._transformDone) { + ctx.globalAlpha = this.getObjectOpacity(); + } + else { + ctx.globalAlpha *= this.opacity; + } + }, + + _setStrokeStyles: function(ctx, decl) { + var stroke = decl.stroke; + if (stroke) { + ctx.lineWidth = decl.strokeWidth; + ctx.lineCap = decl.strokeLineCap; + ctx.lineDashOffset = decl.strokeDashOffset; + ctx.lineJoin = decl.strokeLineJoin; + ctx.miterLimit = decl.strokeMiterLimit; + if (stroke.toLive) { + if (stroke.gradientUnits === 'percentage' || stroke.gradientTransform || stroke.patternTransform) { + // need to transform gradient in a pattern. + // this is a slow process. If you are hitting this codepath, and the object + // is not using caching, you should consider switching it on. + // we need a canvas as big as the current object caching canvas. + this._applyPatternForTransformedGradient(ctx, stroke); + } + else { + // is a simple gradient or pattern + ctx.strokeStyle = stroke.toLive(ctx, this); + this._applyPatternGradientTransform(ctx, stroke); + } + } + else { + // is a color + ctx.strokeStyle = decl.stroke; + } + } + }, + + _setFillStyles: function(ctx, decl) { + var fill = decl.fill; + if (fill) { + if (fill.toLive) { + ctx.fillStyle = fill.toLive(ctx, this); + this._applyPatternGradientTransform(ctx, decl.fill); + } + else { + ctx.fillStyle = fill; + } + } + }, + + _setClippingProperties: function(ctx) { + ctx.globalAlpha = 1; + ctx.strokeStyle = 'transparent'; + ctx.fillStyle = '#000000'; + }, + + /** + * @private + * Sets line dash + * @param {CanvasRenderingContext2D} ctx Context to set the dash line on + * @param {Array} dashArray array representing dashes + */ + _setLineDash: function(ctx, dashArray) { + if (!dashArray || dashArray.length === 0) { + return; + } + // Spec requires the concatenation of two copies the dash list when the number of elements is odd + if (1 & dashArray.length) { + dashArray.push.apply(dashArray, dashArray); + } + ctx.setLineDash(dashArray); + }, + + /** + * Renders controls and borders for the object + * the context here is not transformed + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Object} [styleOverride] properties to override the object style + */ + _renderControls: function(ctx, styleOverride) { + var vpt = this.getViewportTransform(), + matrix = this.calcTransformMatrix(), + options, drawBorders, drawControls; + styleOverride = styleOverride || { }; + drawBorders = typeof styleOverride.hasBorders !== 'undefined' ? styleOverride.hasBorders : this.hasBorders; + drawControls = typeof styleOverride.hasControls !== 'undefined' ? styleOverride.hasControls : this.hasControls; + matrix = fabric.util.multiplyTransformMatrices(vpt, matrix); + options = fabric.util.qrDecompose(matrix); + ctx.save(); + ctx.translate(options.translateX, options.translateY); + ctx.lineWidth = 1 * this.borderScaleFactor; + if (!this.group) { + ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1; + } + if (this.flipX) { + options.angle -= 180; + } + ctx.rotate(degreesToRadians(this.group ? options.angle : this.angle)); + if (styleOverride.forActiveSelection || this.group) { + drawBorders && this.drawBordersInGroup(ctx, options, styleOverride); + } + else { + drawBorders && this.drawBorders(ctx, styleOverride); + } + drawControls && this.drawControls(ctx, styleOverride); + ctx.restore(); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _setShadow: function(ctx) { + if (!this.shadow) { + return; + } + + var shadow = this.shadow, canvas = this.canvas, scaling, + multX = (canvas && canvas.viewportTransform[0]) || 1, + multY = (canvas && canvas.viewportTransform[3]) || 1; + if (shadow.nonScaling) { + scaling = { scaleX: 1, scaleY: 1 }; + } + else { + scaling = this.getObjectScaling(); + } + if (canvas && canvas._isRetinaScaling()) { + multX *= fabric.devicePixelRatio; + multY *= fabric.devicePixelRatio; + } + ctx.shadowColor = shadow.color; + ctx.shadowBlur = shadow.blur * fabric.browserShadowBlurConstant * + (multX + multY) * (scaling.scaleX + scaling.scaleY) / 4; + ctx.shadowOffsetX = shadow.offsetX * multX * scaling.scaleX; + ctx.shadowOffsetY = shadow.offsetY * multY * scaling.scaleY; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _removeShadow: function(ctx) { + if (!this.shadow) { + return; + } + + ctx.shadowColor = ''; + ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Object} filler fabric.Pattern or fabric.Gradient + * @return {Object} offset.offsetX offset for text rendering + * @return {Object} offset.offsetY offset for text rendering + */ + _applyPatternGradientTransform: function(ctx, filler) { + if (!filler || !filler.toLive) { + return { offsetX: 0, offsetY: 0 }; + } + var t = filler.gradientTransform || filler.patternTransform; + var offsetX = -this.width / 2 + filler.offsetX || 0, + offsetY = -this.height / 2 + filler.offsetY || 0; + + if (filler.gradientUnits === 'percentage') { + ctx.transform(this.width, 0, 0, this.height, offsetX, offsetY); + } + else { + ctx.transform(1, 0, 0, 1, offsetX, offsetY); + } + if (t) { + ctx.transform(t[0], t[1], t[2], t[3], t[4], t[5]); + } + return { offsetX: offsetX, offsetY: offsetY }; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderPaintInOrder: function(ctx) { + if (this.paintFirst === 'stroke') { + this._renderStroke(ctx); + this._renderFill(ctx); + } + else { + this._renderFill(ctx); + this._renderStroke(ctx); + } + }, + + /** + * @private + * function that actually render something on the context. + * empty here to allow Obects to work on tests to benchmark fabric functionalites + * not related to rendering + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function(/* ctx */) { + + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderFill: function(ctx) { + if (!this.fill) { + return; + } + + ctx.save(); + this._setFillStyles(ctx, this); + if (this.fillRule === 'evenodd') { + ctx.fill('evenodd'); + } + else { + ctx.fill(); + } + ctx.restore(); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderStroke: function(ctx) { + if (!this.stroke || this.strokeWidth === 0) { + return; + } + + if (this.shadow && !this.shadow.affectStroke) { + this._removeShadow(ctx); + } + + ctx.save(); + if (this.strokeUniform && this.group) { + var scaling = this.getObjectScaling(); + ctx.scale(1 / scaling.scaleX, 1 / scaling.scaleY); + } + else if (this.strokeUniform) { + ctx.scale(1 / this.scaleX, 1 / this.scaleY); + } + this._setLineDash(ctx, this.strokeDashArray); + this._setStrokeStyles(ctx, this); + ctx.stroke(); + ctx.restore(); + }, + + /** + * This function try to patch the missing gradientTransform on canvas gradients. + * transforming a context to transform the gradient, is going to transform the stroke too. + * we want to transform the gradient but not the stroke operation, so we create + * a transformed gradient on a pattern and then we use the pattern instead of the gradient. + * this method has drwabacks: is slow, is in low resolution, needs a patch for when the size + * is limited. + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {fabric.Gradient} filler a fabric gradient instance + */ + _applyPatternForTransformedGradient: function(ctx, filler) { + var dims = this._limitCacheSize(this._getCacheCanvasDimensions()), + pCanvas = fabric.util.createCanvasElement(), pCtx, retinaScaling = this.canvas.getRetinaScaling(), + width = dims.x / this.scaleX / retinaScaling, height = dims.y / this.scaleY / retinaScaling; + pCanvas.width = width; + pCanvas.height = height; + pCtx = pCanvas.getContext('2d'); + pCtx.beginPath(); pCtx.moveTo(0, 0); pCtx.lineTo(width, 0); pCtx.lineTo(width, height); + pCtx.lineTo(0, height); pCtx.closePath(); + pCtx.translate(width / 2, height / 2); + pCtx.scale( + dims.zoomX / this.scaleX / retinaScaling, + dims.zoomY / this.scaleY / retinaScaling + ); + this._applyPatternGradientTransform(pCtx, filler); + pCtx.fillStyle = filler.toLive(ctx); + pCtx.fill(); + ctx.translate(-this.width / 2 - this.strokeWidth / 2, -this.height / 2 - this.strokeWidth / 2); + ctx.scale( + retinaScaling * this.scaleX / dims.zoomX, + retinaScaling * this.scaleY / dims.zoomY + ); + ctx.strokeStyle = pCtx.createPattern(pCanvas, 'no-repeat'); + }, + + /** + * This function is an helper for svg import. it returns the center of the object in the svg + * untransformed coordinates + * @private + * @return {Object} center point from element coordinates + */ + _findCenterFromElement: function() { + return { x: this.left + this.width / 2, y: this.top + this.height / 2 }; + }, + + /** + * This function is an helper for svg import. it decompose the transformMatrix + * and assign properties to object. + * untransformed coordinates + * @private + * @chainable + */ + _assignTransformMatrixProps: function() { + if (this.transformMatrix) { + var options = fabric.util.qrDecompose(this.transformMatrix); + this.flipX = false; + this.flipY = false; + this.set('scaleX', options.scaleX); + this.set('scaleY', options.scaleY); + this.angle = options.angle; + this.skewX = options.skewX; + this.skewY = 0; + } + }, + + /** + * This function is an helper for svg import. it removes the transform matrix + * and set to object properties that fabricjs can handle + * @private + * @param {Object} preserveAspectRatioOptions + * @return {thisArg} + */ + _removeTransformMatrix: function(preserveAspectRatioOptions) { + var center = this._findCenterFromElement(); + if (this.transformMatrix) { + this._assignTransformMatrixProps(); + center = fabric.util.transformPoint(center, this.transformMatrix); + } + this.transformMatrix = null; + if (preserveAspectRatioOptions) { + this.scaleX *= preserveAspectRatioOptions.scaleX; + this.scaleY *= preserveAspectRatioOptions.scaleY; + this.cropX = preserveAspectRatioOptions.cropX; + this.cropY = preserveAspectRatioOptions.cropY; + center.x += preserveAspectRatioOptions.offsetLeft; + center.y += preserveAspectRatioOptions.offsetTop; + this.width = preserveAspectRatioOptions.width; + this.height = preserveAspectRatioOptions.height; + } + this.setPositionByOrigin(center, 'center', 'center'); + }, + + /** + * Clones an instance, using a callback method will work for every object. + * @param {Function} callback Callback is invoked with a clone as a first argument + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + */ + clone: function(callback, propertiesToInclude) { + var objectForm = this.toObject(propertiesToInclude); + if (this.constructor.fromObject) { + this.constructor.fromObject(objectForm, callback); + } + else { + fabric.Object._fromObject('Object', objectForm, callback); + } + }, + + /** + * Creates an instance of fabric.Image out of an object + * makes use of toCanvasElement. + * Once this method was based on toDataUrl and loadImage, so it also had a quality + * and format option. toCanvasElement is faster and produce no loss of quality. + * If you need to get a real Jpeg or Png from an object, using toDataURL is the right way to do it. + * toCanvasElement and then toBlob from the obtained canvas is also a good option. + * This method is sync now, but still support the callback because we did not want to break. + * When fabricJS 5.0 will be planned, this will probably be changed to not have a callback. + * @param {Function} callback callback, invoked with an instance as a first argument + * @param {Object} [options] for clone as image, passed to toDataURL + * @param {Number} [options.multiplier=1] Multiplier to scale by + * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 + * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 + * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 + * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 + * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 + * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 + * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 + * @return {fabric.Object} thisArg + */ + cloneAsImage: function(callback, options) { + var canvasEl = this.toCanvasElement(options); + if (callback) { + callback(new fabric.Image(canvasEl)); + } + return this; + }, + + /** + * Converts an object into a HTMLCanvas element + * @param {Object} options Options object + * @param {Number} [options.multiplier=1] Multiplier to scale by + * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 + * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 + * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 + * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 + * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 + * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 + * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 + * @return {HTMLCanvasElement} Returns DOM element with the fabric.Object + */ + toCanvasElement: function(options) { + options || (options = { }); + + var utils = fabric.util, origParams = utils.saveObjectTransform(this), + originalGroup = this.group, + originalShadow = this.shadow, abs = Math.abs, + multiplier = (options.multiplier || 1) * (options.enableRetinaScaling ? fabric.devicePixelRatio : 1); + delete this.group; + if (options.withoutTransform) { + utils.resetObjectTransform(this); + } + if (options.withoutShadow) { + this.shadow = null; + } + + var el = fabric.util.createCanvasElement(), + // skip canvas zoom and calculate with setCoords now. + boundingRect = this.getBoundingRect(true, true), + shadow = this.shadow, scaling, + shadowOffset = { x: 0, y: 0 }, shadowBlur, + width, height; + + if (shadow) { + shadowBlur = shadow.blur; + if (shadow.nonScaling) { + scaling = { scaleX: 1, scaleY: 1 }; + } + else { + scaling = this.getObjectScaling(); + } + // consider non scaling shadow. + shadowOffset.x = 2 * Math.round(abs(shadow.offsetX) + shadowBlur) * (abs(scaling.scaleX)); + shadowOffset.y = 2 * Math.round(abs(shadow.offsetY) + shadowBlur) * (abs(scaling.scaleY)); + } + width = boundingRect.width + shadowOffset.x; + height = boundingRect.height + shadowOffset.y; + // if the current width/height is not an integer + // we need to make it so. + el.width = Math.ceil(width); + el.height = Math.ceil(height); + var canvas = new fabric.StaticCanvas(el, { + enableRetinaScaling: false, + renderOnAddRemove: false, + skipOffscreen: false, + }); + if (options.format === 'jpeg') { + canvas.backgroundColor = '#fff'; + } + this.setPositionByOrigin(new fabric.Point(canvas.width / 2, canvas.height / 2), 'center', 'center'); + + var originalCanvas = this.canvas; + canvas.add(this); + var canvasEl = canvas.toCanvasElement(multiplier || 1, options); + this.shadow = originalShadow; + this.set('canvas', originalCanvas); + if (originalGroup) { + this.group = originalGroup; + } + this.set(origParams).setCoords(); + // canvas.dispose will call image.dispose that will nullify the elements + // since this canvas is a simple element for the process, we remove references + // to objects in this way in order to avoid object trashing. + canvas._objects = []; + canvas.dispose(); + canvas = null; + + return canvasEl; + }, + + /** + * Converts an object into a data-url-like string + * @param {Object} options Options object + * @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png" + * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg. + * @param {Number} [options.multiplier=1] Multiplier to scale by + * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14 + * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14 + * @param {Number} [options.width] Cropping width. Introduced in v1.2.14 + * @param {Number} [options.height] Cropping height. Introduced in v1.2.14 + * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4 + * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4 + * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2 + * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format + */ + toDataURL: function(options) { + options || (options = { }); + return fabric.util.toDataURL(this.toCanvasElement(options), options.format || 'png', options.quality || 1); + }, + + /** + * Returns true if specified type is identical to the type of an instance + * @param {String} type Type to check against + * @return {Boolean} + */ + isType: function(type) { + return this.type === type; + }, + + /** + * Returns complexity of an instance + * @return {Number} complexity of this instance (is 1 unless subclassed) + */ + complexity: function() { + return 1; + }, + + /** + * Returns a JSON representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} JSON + */ + toJSON: function(propertiesToInclude) { + // delegate, not alias + return this.toObject(propertiesToInclude); + }, + + /** + * Sets "angle" of an instance with centered rotation + * @param {Number} angle Angle value (in degrees) + * @return {fabric.Object} thisArg + * @chainable + */ + rotate: function(angle) { + var shouldCenterOrigin = (this.originX !== 'center' || this.originY !== 'center') && this.centeredRotation; + + if (shouldCenterOrigin) { + this._setOriginToCenter(); + } + + this.set('angle', angle); + + if (shouldCenterOrigin) { + this._resetOrigin(); + } + + return this; + }, + + /** + * Centers object horizontally on canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + centerH: function () { + this.canvas && this.canvas.centerObjectH(this); + return this; + }, + + /** + * Centers object horizontally on current viewport of canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + viewportCenterH: function () { + this.canvas && this.canvas.viewportCenterObjectH(this); + return this; + }, + + /** + * Centers object vertically on canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + centerV: function () { + this.canvas && this.canvas.centerObjectV(this); + return this; + }, + + /** + * Centers object vertically on current viewport of canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + viewportCenterV: function () { + this.canvas && this.canvas.viewportCenterObjectV(this); + return this; + }, + + /** + * Centers object vertically and horizontally on canvas to which is was added last + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + center: function () { + this.canvas && this.canvas.centerObject(this); + return this; + }, + + /** + * Centers object on current viewport of canvas to which it was added last. + * You might need to call `setCoords` on an object after centering, to update controls area. + * @return {fabric.Object} thisArg + * @chainable + */ + viewportCenter: function () { + this.canvas && this.canvas.viewportCenterObject(this); + return this; + }, + + /** + * Returns coordinates of a pointer relative to an object + * @param {Event} e Event to operate upon + * @param {Object} [pointer] Pointer to operate upon (instead of event) + * @return {Object} Coordinates of a pointer (x, y) + */ + getLocalPointer: function(e, pointer) { + pointer = pointer || this.canvas.getPointer(e); + var pClicked = new fabric.Point(pointer.x, pointer.y), + objectLeftTop = this._getLeftTopCoords(); + if (this.angle) { + pClicked = fabric.util.rotatePoint( + pClicked, objectLeftTop, degreesToRadians(-this.angle)); + } + return { + x: pClicked.x - objectLeftTop.x, + y: pClicked.y - objectLeftTop.y + }; + }, + + /** + * Sets canvas globalCompositeOperation for specific object + * custom composition operation for the particular object can be specified using globalCompositeOperation property + * @param {CanvasRenderingContext2D} ctx Rendering canvas context + */ + _setupCompositeOperation: function (ctx) { + if (this.globalCompositeOperation) { + ctx.globalCompositeOperation = this.globalCompositeOperation; + } + }, + + /** + * cancel instance's running animations + * override if necessary to dispose artifacts such as `clipPath` + */ + dispose: function () { + if (fabric.runningAnimations) { + fabric.runningAnimations.cancelByTarget(this); + } + } + }); + + fabric.util.createAccessors && fabric.util.createAccessors(fabric.Object); + + extend(fabric.Object.prototype, fabric.Observable); + + /** + * Defines the number of fraction digits to use when serializing object values. + * You can use it to increase/decrease precision of such values like left, top, scaleX, scaleY, etc. + * @static + * @memberOf fabric.Object + * @constant + * @type Number + */ + fabric.Object.NUM_FRACTION_DIGITS = 2; + + /** + * Defines which properties should be enlivened from the object passed to {@link fabric.Object._fromObject} + * @static + * @memberOf fabric.Object + * @constant + * @type string[] + */ + fabric.Object.ENLIVEN_PROPS = ['clipPath']; + + fabric.Object._fromObject = function(className, object, callback, extraParam) { + var klass = fabric[className]; + object = clone(object, true); + fabric.util.enlivenPatterns([object.fill, object.stroke], function(patterns) { + if (typeof patterns[0] !== 'undefined') { + object.fill = patterns[0]; + } + if (typeof patterns[1] !== 'undefined') { + object.stroke = patterns[1]; + } + fabric.util.enlivenObjectEnlivables(object, object, function () { + var instance = extraParam ? new klass(object[extraParam], object) : new klass(object); + callback && callback(instance); + }); + }); + }; + + /** + * Unique id used internally when creating SVG elements + * @static + * @memberOf fabric.Object + * @type Number + */ + fabric.Object.__uid = 0; +})(typeof exports !== 'undefined' ? exports : this); + + +(function() { + + var degreesToRadians = fabric.util.degreesToRadians, + originXOffset = { + left: -0.5, + center: 0, + right: 0.5 + }, + originYOffset = { + top: -0.5, + center: 0, + bottom: 0.5 + }; + + fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { + + /** + * Translates the coordinates from a set of origin to another (based on the object's dimensions) + * @param {fabric.Point} point The point which corresponds to the originX and originY params + * @param {String} fromOriginX Horizontal origin: 'left', 'center' or 'right' + * @param {String} fromOriginY Vertical origin: 'top', 'center' or 'bottom' + * @param {String} toOriginX Horizontal origin: 'left', 'center' or 'right' + * @param {String} toOriginY Vertical origin: 'top', 'center' or 'bottom' + * @return {fabric.Point} + */ + translateToGivenOrigin: function(point, fromOriginX, fromOriginY, toOriginX, toOriginY) { + var x = point.x, + y = point.y, + offsetX, offsetY, dim; + + if (typeof fromOriginX === 'string') { + fromOriginX = originXOffset[fromOriginX]; + } + else { + fromOriginX -= 0.5; + } + + if (typeof toOriginX === 'string') { + toOriginX = originXOffset[toOriginX]; + } + else { + toOriginX -= 0.5; + } + + offsetX = toOriginX - fromOriginX; + + if (typeof fromOriginY === 'string') { + fromOriginY = originYOffset[fromOriginY]; + } + else { + fromOriginY -= 0.5; + } + + if (typeof toOriginY === 'string') { + toOriginY = originYOffset[toOriginY]; + } + else { + toOriginY -= 0.5; + } + + offsetY = toOriginY - fromOriginY; + + if (offsetX || offsetY) { + dim = this._getTransformedDimensions(); + x = point.x + offsetX * dim.x; + y = point.y + offsetY * dim.y; + } + + return new fabric.Point(x, y); + }, + + /** + * Translates the coordinates from origin to center coordinates (based on the object's dimensions) + * @param {fabric.Point} point The point which corresponds to the originX and originY params + * @param {String} originX Horizontal origin: 'left', 'center' or 'right' + * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {fabric.Point} + */ + translateToCenterPoint: function(point, originX, originY) { + var p = this.translateToGivenOrigin(point, originX, originY, 'center', 'center'); + if (this.angle) { + return fabric.util.rotatePoint(p, point, degreesToRadians(this.angle)); + } + return p; + }, + + /** + * Translates the coordinates from center to origin coordinates (based on the object's dimensions) + * @param {fabric.Point} center The point which corresponds to center of the object + * @param {String} originX Horizontal origin: 'left', 'center' or 'right' + * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {fabric.Point} + */ + translateToOriginPoint: function(center, originX, originY) { + var p = this.translateToGivenOrigin(center, 'center', 'center', originX, originY); + if (this.angle) { + return fabric.util.rotatePoint(p, center, degreesToRadians(this.angle)); + } + return p; + }, + + /** + * Returns the real center coordinates of the object + * @return {fabric.Point} + */ + getCenterPoint: function() { + var leftTop = new fabric.Point(this.left, this.top); + return this.translateToCenterPoint(leftTop, this.originX, this.originY); + }, + + /** + * Returns the coordinates of the object based on center coordinates + * @param {fabric.Point} point The point which corresponds to the originX and originY params + * @return {fabric.Point} + */ + // getOriginPoint: function(center) { + // return this.translateToOriginPoint(center, this.originX, this.originY); + // }, + + /** + * Returns the coordinates of the object as if it has a different origin + * @param {String} originX Horizontal origin: 'left', 'center' or 'right' + * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {fabric.Point} + */ + getPointByOrigin: function(originX, originY) { + var center = this.getCenterPoint(); + return this.translateToOriginPoint(center, originX, originY); + }, + + /** + * Returns the point in local coordinates + * @param {fabric.Point} point The point relative to the global coordinate system + * @param {String} originX Horizontal origin: 'left', 'center' or 'right' + * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {fabric.Point} + */ + toLocalPoint: function(point, originX, originY) { + var center = this.getCenterPoint(), + p, p2; + + if (typeof originX !== 'undefined' && typeof originY !== 'undefined' ) { + p = this.translateToGivenOrigin(center, 'center', 'center', originX, originY); + } + else { + p = new fabric.Point(this.left, this.top); + } + + p2 = new fabric.Point(point.x, point.y); + if (this.angle) { + p2 = fabric.util.rotatePoint(p2, center, -degreesToRadians(this.angle)); + } + return p2.subtractEquals(p); + }, + + /** + * Returns the point in global coordinates + * @param {fabric.Point} The point relative to the local coordinate system + * @return {fabric.Point} + */ + // toGlobalPoint: function(point) { + // return fabric.util.rotatePoint(point, this.getCenterPoint(), degreesToRadians(this.angle)).addEquals(new fabric.Point(this.left, this.top)); + // }, + + /** + * Sets the position of the object taking into consideration the object's origin + * @param {fabric.Point} pos The new position of the object + * @param {String} originX Horizontal origin: 'left', 'center' or 'right' + * @param {String} originY Vertical origin: 'top', 'center' or 'bottom' + * @return {void} + */ + setPositionByOrigin: function(pos, originX, originY) { + var center = this.translateToCenterPoint(pos, originX, originY), + position = this.translateToOriginPoint(center, this.originX, this.originY); + this.set('left', position.x); + this.set('top', position.y); + }, + + /** + * @param {String} to One of 'left', 'center', 'right' + */ + adjustPosition: function(to) { + var angle = degreesToRadians(this.angle), + hypotFull = this.getScaledWidth(), + xFull = fabric.util.cos(angle) * hypotFull, + yFull = fabric.util.sin(angle) * hypotFull, + offsetFrom, offsetTo; + + //TODO: this function does not consider mixed situation like top, center. + if (typeof this.originX === 'string') { + offsetFrom = originXOffset[this.originX]; + } + else { + offsetFrom = this.originX - 0.5; + } + if (typeof to === 'string') { + offsetTo = originXOffset[to]; + } + else { + offsetTo = to - 0.5; + } + this.left += xFull * (offsetTo - offsetFrom); + this.top += yFull * (offsetTo - offsetFrom); + this.setCoords(); + this.originX = to; + }, + + /** + * Sets the origin/position of the object to it's center point + * @private + * @return {void} + */ + _setOriginToCenter: function() { + this._originalOriginX = this.originX; + this._originalOriginY = this.originY; + + var center = this.getCenterPoint(); + + this.originX = 'center'; + this.originY = 'center'; + + this.left = center.x; + this.top = center.y; + }, + + /** + * Resets the origin/position of the object to it's original origin + * @private + * @return {void} + */ + _resetOrigin: function() { + var originPoint = this.translateToOriginPoint( + this.getCenterPoint(), + this._originalOriginX, + this._originalOriginY); + + this.originX = this._originalOriginX; + this.originY = this._originalOriginY; + + this.left = originPoint.x; + this.top = originPoint.y; + + this._originalOriginX = null; + this._originalOriginY = null; + }, + + /** + * @private + */ + _getLeftTopCoords: function() { + return this.translateToOriginPoint(this.getCenterPoint(), 'left', 'top'); + }, + }); + +})(); + + +(function() { + + function arrayFromCoords(coords) { + return [ + new fabric.Point(coords.tl.x, coords.tl.y), + new fabric.Point(coords.tr.x, coords.tr.y), + new fabric.Point(coords.br.x, coords.br.y), + new fabric.Point(coords.bl.x, coords.bl.y) + ]; + } + + var util = fabric.util, + degreesToRadians = util.degreesToRadians, + multiplyMatrices = util.multiplyTransformMatrices, + transformPoint = util.transformPoint; + + util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { + + /** + * Describe object's corner position in canvas element coordinates. + * properties are depending on control keys and padding the main controls. + * each property is an object with x, y and corner. + * The `corner` property contains in a similar manner the 4 points of the + * interactive area of the corner. + * The coordinates depends from the controls positionHandler and are used + * to draw and locate controls + * @memberOf fabric.Object.prototype + */ + oCoords: null, + + /** + * Describe object's corner position in canvas object absolute coordinates + * properties are tl,tr,bl,br and describe the four main corner. + * each property is an object with x, y, instance of Fabric.Point. + * The coordinates depends from this properties: width, height, scaleX, scaleY + * skewX, skewY, angle, strokeWidth, top, left. + * Those coordinates are useful to understand where an object is. They get updated + * with oCoords but they do not need to be updated when zoom or panning change. + * The coordinates get updated with @method setCoords. + * You can calculate them without updating with @method calcACoords(); + * @memberOf fabric.Object.prototype + */ + aCoords: null, + + /** + * Describe object's corner position in canvas element coordinates. + * includes padding. Used of object detection. + * set and refreshed with setCoords. + * @memberOf fabric.Object.prototype + */ + lineCoords: null, + + /** + * storage for object transform matrix + */ + ownMatrixCache: null, + + /** + * storage for object full transform matrix + */ + matrixCache: null, + + /** + * custom controls interface + * controls are added by default_controls.js + */ + controls: { }, + + /** + * return correct set of coordinates for intersection + * this will return either aCoords or lineCoords. + * @param {Boolean} absolute will return aCoords if true or lineCoords + * @return {Object} {tl, tr, br, bl} points + */ + _getCoords: function(absolute, calculate) { + if (calculate) { + return (absolute ? this.calcACoords() : this.calcLineCoords()); + } + if (!this.aCoords || !this.lineCoords) { + this.setCoords(true); + } + return (absolute ? this.aCoords : this.lineCoords); + }, + + /** + * return correct set of coordinates for intersection + * this will return either aCoords or lineCoords. + * The coords are returned in an array. + * @return {Array} [tl, tr, br, bl] of points + */ + getCoords: function(absolute, calculate) { + return arrayFromCoords(this._getCoords(absolute, calculate)); + }, + + /** + * Checks if object intersects with an area formed by 2 points + * @param {Object} pointTL top-left point of area + * @param {Object} pointBR bottom-right point of area + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object intersects with an area formed by 2 points + */ + intersectsWithRect: function(pointTL, pointBR, absolute, calculate) { + var coords = this.getCoords(absolute, calculate), + intersection = fabric.Intersection.intersectPolygonRectangle( + coords, + pointTL, + pointBR + ); + return intersection.status === 'Intersection'; + }, + + /** + * Checks if object intersects with another object + * @param {Object} other Object to test + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object intersects with another object + */ + intersectsWithObject: function(other, absolute, calculate) { + var intersection = fabric.Intersection.intersectPolygonPolygon( + this.getCoords(absolute, calculate), + other.getCoords(absolute, calculate) + ); + + return intersection.status === 'Intersection' + || other.isContainedWithinObject(this, absolute, calculate) + || this.isContainedWithinObject(other, absolute, calculate); + }, + + /** + * Checks if object is fully contained within area of another object + * @param {Object} other Object to test + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object is fully contained within area of another object + */ + isContainedWithinObject: function(other, absolute, calculate) { + var points = this.getCoords(absolute, calculate), + otherCoords = absolute ? other.aCoords : other.lineCoords, + i = 0, lines = other._getImageLines(otherCoords); + for (; i < 4; i++) { + if (!other.containsPoint(points[i], lines)) { + return false; + } + } + return true; + }, + + /** + * Checks if object is fully contained within area formed by 2 points + * @param {Object} pointTL top-left point of area + * @param {Object} pointBR bottom-right point of area + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object is fully contained within area formed by 2 points + */ + isContainedWithinRect: function(pointTL, pointBR, absolute, calculate) { + var boundingRect = this.getBoundingRect(absolute, calculate); + + return ( + boundingRect.left >= pointTL.x && + boundingRect.left + boundingRect.width <= pointBR.x && + boundingRect.top >= pointTL.y && + boundingRect.top + boundingRect.height <= pointBR.y + ); + }, + + /** + * Checks if point is inside the object + * @param {fabric.Point} point Point to check against + * @param {Object} [lines] object returned from @method _getImageLines + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if point is inside the object + */ + containsPoint: function(point, lines, absolute, calculate) { + var coords = this._getCoords(absolute, calculate), + lines = lines || this._getImageLines(coords), + xPoints = this._findCrossPoints(point, lines); + // if xPoints is odd then point is inside the object + return (xPoints !== 0 && xPoints % 2 === 1); + }, + + /** + * Checks if object is contained within the canvas with current viewportTransform + * the check is done stopping at first point that appears on screen + * @param {Boolean} [calculate] use coordinates of current position instead of .aCoords + * @return {Boolean} true if object is fully or partially contained within canvas + */ + isOnScreen: function(calculate) { + if (!this.canvas) { + return false; + } + var pointTL = this.canvas.vptCoords.tl, pointBR = this.canvas.vptCoords.br; + var points = this.getCoords(true, calculate); + // if some point is on screen, the object is on screen. + if (points.some(function(point) { + return point.x <= pointBR.x && point.x >= pointTL.x && + point.y <= pointBR.y && point.y >= pointTL.y; + })) { + return true; + } + // no points on screen, check intersection with absolute coordinates + if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) { + return true; + } + return this._containsCenterOfCanvas(pointTL, pointBR, calculate); + }, + + /** + * Checks if the object contains the midpoint between canvas extremities + * Does not make sense outside the context of isOnScreen and isPartiallyOnScreen + * @private + * @param {Fabric.Point} pointTL Top Left point + * @param {Fabric.Point} pointBR Top Right point + * @param {Boolean} calculate use coordinates of current position instead of .oCoords + * @return {Boolean} true if the object contains the point + */ + _containsCenterOfCanvas: function(pointTL, pointBR, calculate) { + // worst case scenario the object is so big that contains the screen + var centerPoint = { x: (pointTL.x + pointBR.x) / 2, y: (pointTL.y + pointBR.y) / 2 }; + if (this.containsPoint(centerPoint, null, true, calculate)) { + return true; + } + return false; + }, + + /** + * Checks if object is partially contained within the canvas with current viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords + * @return {Boolean} true if object is partially contained within canvas + */ + isPartiallyOnScreen: function(calculate) { + if (!this.canvas) { + return false; + } + var pointTL = this.canvas.vptCoords.tl, pointBR = this.canvas.vptCoords.br; + if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) { + return true; + } + var allPointsAreOutside = this.getCoords(true, calculate).every(function(point) { + return (point.x >= pointBR.x || point.x <= pointTL.x) && + (point.y >= pointBR.y || point.y <= pointTL.y); + }); + return allPointsAreOutside && this._containsCenterOfCanvas(pointTL, pointBR, calculate); + }, + + /** + * Method that returns an object with the object edges in it, given the coordinates of the corners + * @private + * @param {Object} oCoords Coordinates of the object corners + */ + _getImageLines: function(oCoords) { + + var lines = { + topline: { + o: oCoords.tl, + d: oCoords.tr + }, + rightline: { + o: oCoords.tr, + d: oCoords.br + }, + bottomline: { + o: oCoords.br, + d: oCoords.bl + }, + leftline: { + o: oCoords.bl, + d: oCoords.tl + } + }; + + // // debugging + // if (this.canvas.contextTop) { + // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2); + // } + + return lines; + }, + + /** + * Helper method to determine how many cross points are between the 4 object edges + * and the horizontal line determined by a point on canvas + * @private + * @param {fabric.Point} point Point to check + * @param {Object} lines Coordinates of the object being evaluated + */ + // remove yi, not used but left code here just in case. + _findCrossPoints: function(point, lines) { + var b1, b2, a1, a2, xi, // yi, + xcount = 0, + iLine; + + for (var lineKey in lines) { + iLine = lines[lineKey]; + // optimisation 1: line below point. no cross + if ((iLine.o.y < point.y) && (iLine.d.y < point.y)) { + continue; + } + // optimisation 2: line above point. no cross + if ((iLine.o.y >= point.y) && (iLine.d.y >= point.y)) { + continue; + } + // optimisation 3: vertical line case + if ((iLine.o.x === iLine.d.x) && (iLine.o.x >= point.x)) { + xi = iLine.o.x; + // yi = point.y; + } + // calculate the intersection point + else { + b1 = 0; + b2 = (iLine.d.y - iLine.o.y) / (iLine.d.x - iLine.o.x); + a1 = point.y - b1 * point.x; + a2 = iLine.o.y - b2 * iLine.o.x; + + xi = -(a1 - a2) / (b1 - b2); + // yi = a1 + b1 * xi; + } + // dont count xi < point.x cases + if (xi >= point.x) { + xcount += 1; + } + // optimisation 4: specific for square images + if (xcount === 2) { + break; + } + } + return xcount; + }, + + /** + * Returns coordinates of object's bounding rectangle (left, top, width, height) + * the box is intended as aligned to axis of canvas. + * @param {Boolean} [absolute] use coordinates without viewportTransform + * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords / .aCoords + * @return {Object} Object with left, top, width, height properties + */ + getBoundingRect: function(absolute, calculate) { + var coords = this.getCoords(absolute, calculate); + return util.makeBoundingBoxFromPoints(coords); + }, + + /** + * Returns width of an object's bounding box counting transformations + * before 2.0 it was named getWidth(); + * @return {Number} width value + */ + getScaledWidth: function() { + return this._getTransformedDimensions().x; + }, + + /** + * Returns height of an object bounding box counting transformations + * before 2.0 it was named getHeight(); + * @return {Number} height value + */ + getScaledHeight: function() { + return this._getTransformedDimensions().y; + }, + + /** + * Makes sure the scale is valid and modifies it if necessary + * @private + * @param {Number} value + * @return {Number} + */ + _constrainScale: function(value) { + if (Math.abs(value) < this.minScaleLimit) { + if (value < 0) { + return -this.minScaleLimit; + } + else { + return this.minScaleLimit; + } + } + else if (value === 0) { + return 0.0001; + } + return value; + }, + + /** + * Scales an object (equally by x and y) + * @param {Number} value Scale factor + * @return {fabric.Object} thisArg + * @chainable + */ + scale: function(value) { + this._set('scaleX', value); + this._set('scaleY', value); + return this.setCoords(); + }, + + /** + * Scales an object to a given width, with respect to bounding box (scaling by x/y equally) + * @param {Number} value New width value + * @param {Boolean} absolute ignore viewport + * @return {fabric.Object} thisArg + * @chainable + */ + scaleToWidth: function(value, absolute) { + // adjust to bounding rect factor so that rotated shapes would fit as well + var boundingRectFactor = this.getBoundingRect(absolute).width / this.getScaledWidth(); + return this.scale(value / this.width / boundingRectFactor); + }, + + /** + * Scales an object to a given height, with respect to bounding box (scaling by x/y equally) + * @param {Number} value New height value + * @param {Boolean} absolute ignore viewport + * @return {fabric.Object} thisArg + * @chainable + */ + scaleToHeight: function(value, absolute) { + // adjust to bounding rect factor so that rotated shapes would fit as well + var boundingRectFactor = this.getBoundingRect(absolute).height / this.getScaledHeight(); + return this.scale(value / this.height / boundingRectFactor); + }, + + calcLineCoords: function() { + var vpt = this.getViewportTransform(), + padding = this.padding, angle = degreesToRadians(this.angle), + cos = util.cos(angle), sin = util.sin(angle), + cosP = cos * padding, sinP = sin * padding, cosPSinP = cosP + sinP, + cosPMinusSinP = cosP - sinP, aCoords = this.calcACoords(); + + var lineCoords = { + tl: transformPoint(aCoords.tl, vpt), + tr: transformPoint(aCoords.tr, vpt), + bl: transformPoint(aCoords.bl, vpt), + br: transformPoint(aCoords.br, vpt), + }; + + if (padding) { + lineCoords.tl.x -= cosPMinusSinP; + lineCoords.tl.y -= cosPSinP; + lineCoords.tr.x += cosPSinP; + lineCoords.tr.y -= cosPMinusSinP; + lineCoords.bl.x -= cosPSinP; + lineCoords.bl.y += cosPMinusSinP; + lineCoords.br.x += cosPMinusSinP; + lineCoords.br.y += cosPSinP; + } + + return lineCoords; + }, + + calcOCoords: function() { + var rotateMatrix = this._calcRotateMatrix(), + translateMatrix = this._calcTranslateMatrix(), + vpt = this.getViewportTransform(), + startMatrix = multiplyMatrices(vpt, translateMatrix), + finalMatrix = multiplyMatrices(startMatrix, rotateMatrix), + finalMatrix = multiplyMatrices(finalMatrix, [1 / vpt[0], 0, 0, 1 / vpt[3], 0, 0]), + dim = this._calculateCurrentDimensions(), + coords = {}; + this.forEachControl(function(control, key, fabricObject) { + coords[key] = control.positionHandler(dim, finalMatrix, fabricObject); + }); + + // debug code + // var canvas = this.canvas; + // setTimeout(function() { + // canvas.contextTop.clearRect(0, 0, 700, 700); + // canvas.contextTop.fillStyle = 'green'; + // Object.keys(coords).forEach(function(key) { + // var control = coords[key]; + // canvas.contextTop.fillRect(control.x, control.y, 3, 3); + // }); + // }, 50); + return coords; + }, + + calcACoords: function() { + var rotateMatrix = this._calcRotateMatrix(), + translateMatrix = this._calcTranslateMatrix(), + finalMatrix = multiplyMatrices(translateMatrix, rotateMatrix), + dim = this._getTransformedDimensions(), + w = dim.x / 2, h = dim.y / 2; + return { + // corners + tl: transformPoint({ x: -w, y: -h }, finalMatrix), + tr: transformPoint({ x: w, y: -h }, finalMatrix), + bl: transformPoint({ x: -w, y: h }, finalMatrix), + br: transformPoint({ x: w, y: h }, finalMatrix) + }; + }, + + /** + * Sets corner and controls position coordinates based on current angle, width and height, left and top. + * oCoords are used to find the corners + * aCoords are used to quickly find an object on the canvas + * lineCoords are used to quickly find object during pointer events. + * See {@link https://github.com/fabricjs/fabric.js/wiki/When-to-call-setCoords} and {@link http://fabricjs.com/fabric-gotchas} + * + * @param {Boolean} [skipCorners] skip calculation of oCoords. + * @return {fabric.Object} thisArg + * @chainable + */ + setCoords: function(skipCorners) { + this.aCoords = this.calcACoords(); + // in case we are in a group, for how the inner group target check works, + // lineCoords are exactly aCoords. Since the vpt gets absorbed by the normalized pointer. + this.lineCoords = this.group ? this.aCoords : this.calcLineCoords(); + if (skipCorners) { + return this; + } + // set coordinates of the draggable boxes in the corners used to scale/rotate the image + this.oCoords = this.calcOCoords(); + this._setCornerCoords && this._setCornerCoords(); + return this; + }, + + /** + * calculate rotation matrix of an object + * @return {Array} rotation matrix for the object + */ + _calcRotateMatrix: function() { + return util.calcRotateMatrix(this); + }, + + /** + * calculate the translation matrix for an object transform + * @return {Array} rotation matrix for the object + */ + _calcTranslateMatrix: function() { + var center = this.getCenterPoint(); + return [1, 0, 0, 1, center.x, center.y]; + }, + + transformMatrixKey: function(skipGroup) { + var sep = '_', prefix = ''; + if (!skipGroup && this.group) { + prefix = this.group.transformMatrixKey(skipGroup) + sep; + }; + return prefix + this.top + sep + this.left + sep + this.scaleX + sep + this.scaleY + + sep + this.skewX + sep + this.skewY + sep + this.angle + sep + this.originX + sep + this.originY + + sep + this.width + sep + this.height + sep + this.strokeWidth + this.flipX + this.flipY; + }, + + /** + * calculate transform matrix that represents the current transformations from the + * object's properties. + * @param {Boolean} [skipGroup] return transform matrix for object not counting parent transformations + * There are some situation in which this is useful to avoid the fake rotation. + * @return {Array} transform matrix for the object + */ + calcTransformMatrix: function(skipGroup) { + var matrix = this.calcOwnMatrix(); + if (skipGroup || !this.group) { + return matrix; + } + var key = this.transformMatrixKey(skipGroup), cache = this.matrixCache || (this.matrixCache = {}); + if (cache.key === key) { + return cache.value; + } + if (this.group) { + matrix = multiplyMatrices(this.group.calcTransformMatrix(false), matrix); + } + cache.key = key; + cache.value = matrix; + return matrix; + }, + + /** + * calculate transform matrix that represents the current transformations from the + * object's properties, this matrix does not include the group transformation + * @return {Array} transform matrix for the object + */ + calcOwnMatrix: function() { + var key = this.transformMatrixKey(true), cache = this.ownMatrixCache || (this.ownMatrixCache = {}); + if (cache.key === key) { + return cache.value; + } + var tMatrix = this._calcTranslateMatrix(), + options = { + angle: this.angle, + translateX: tMatrix[4], + translateY: tMatrix[5], + scaleX: this.scaleX, + scaleY: this.scaleY, + skewX: this.skewX, + skewY: this.skewY, + flipX: this.flipX, + flipY: this.flipY, + }; + cache.key = key; + cache.value = util.composeMatrix(options); + return cache.value; + }, + + /* + * Calculate object dimensions from its properties + * @private + * @return {Object} .x width dimension + * @return {Object} .y height dimension + */ + _getNonTransformedDimensions: function() { + var strokeWidth = this.strokeWidth, + w = this.width + strokeWidth, + h = this.height + strokeWidth; + return { x: w, y: h }; + }, + + /* + * Calculate object bounding box dimensions from its properties scale, skew. + * @param {Number} skewX, a value to override current skewX + * @param {Number} skewY, a value to override current skewY + * @private + * @return {Object} .x width dimension + * @return {Object} .y height dimension + */ + _getTransformedDimensions: function(skewX, skewY) { + if (typeof skewX === 'undefined') { + skewX = this.skewX; + } + if (typeof skewY === 'undefined') { + skewY = this.skewY; + } + var dimensions, dimX, dimY, + noSkew = skewX === 0 && skewY === 0; + + if (this.strokeUniform) { + dimX = this.width; + dimY = this.height; + } + else { + dimensions = this._getNonTransformedDimensions(); + dimX = dimensions.x; + dimY = dimensions.y; + } + if (noSkew) { + return this._finalizeDimensions(dimX * this.scaleX, dimY * this.scaleY); + } + var bbox = util.sizeAfterTransform(dimX, dimY, { + scaleX: this.scaleX, + scaleY: this.scaleY, + skewX: skewX, + skewY: skewY, + }); + return this._finalizeDimensions(bbox.x, bbox.y); + }, + + /* + * Calculate object bounding box dimensions from its properties scale, skew. + * @param Number width width of the bbox + * @param Number height height of the bbox + * @private + * @return {Object} .x finalized width dimension + * @return {Object} .y finalized height dimension + */ + _finalizeDimensions: function(width, height) { + return this.strokeUniform ? + { x: width + this.strokeWidth, y: height + this.strokeWidth } + : + { x: width, y: height }; + }, + + /* + * Calculate object dimensions for controls box, including padding and canvas zoom. + * and active selection + * private + */ + _calculateCurrentDimensions: function() { + var vpt = this.getViewportTransform(), + dim = this._getTransformedDimensions(), + p = transformPoint(dim, vpt, true); + return p.scalarAdd(2 * this.padding); + }, + }); +})(); + + +fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { + + /** + * Moves an object to the bottom of the stack of drawn objects + * @return {fabric.Object} thisArg + * @chainable + */ + sendToBack: function() { + if (this.group) { + fabric.StaticCanvas.prototype.sendToBack.call(this.group, this); + } + else if (this.canvas) { + this.canvas.sendToBack(this); + } + return this; + }, + + /** + * Moves an object to the top of the stack of drawn objects + * @return {fabric.Object} thisArg + * @chainable + */ + bringToFront: function() { + if (this.group) { + fabric.StaticCanvas.prototype.bringToFront.call(this.group, this); + } + else if (this.canvas) { + this.canvas.bringToFront(this); + } + return this; + }, + + /** + * Moves an object down in stack of drawn objects + * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object + * @return {fabric.Object} thisArg + * @chainable + */ + sendBackwards: function(intersecting) { + if (this.group) { + fabric.StaticCanvas.prototype.sendBackwards.call(this.group, this, intersecting); + } + else if (this.canvas) { + this.canvas.sendBackwards(this, intersecting); + } + return this; + }, + + /** + * Moves an object up in stack of drawn objects + * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object + * @return {fabric.Object} thisArg + * @chainable + */ + bringForward: function(intersecting) { + if (this.group) { + fabric.StaticCanvas.prototype.bringForward.call(this.group, this, intersecting); + } + else if (this.canvas) { + this.canvas.bringForward(this, intersecting); + } + return this; + }, + + /** + * Moves an object to specified level in stack of drawn objects + * @param {Number} index New position of object + * @return {fabric.Object} thisArg + * @chainable + */ + moveTo: function(index) { + if (this.group && this.group.type !== 'activeSelection') { + fabric.StaticCanvas.prototype.moveTo.call(this.group, this, index); + } + else if (this.canvas) { + this.canvas.moveTo(this, index); + } + return this; + } +}); + + +/* _TO_SVG_START_ */ +(function() { + function getSvgColorString(prop, value) { + if (!value) { + return prop + ': none; '; + } + else if (value.toLive) { + return prop + ': url(#SVGID_' + value.id + '); '; + } + else { + var color = new fabric.Color(value), + str = prop + ': ' + color.toRgb() + '; ', + opacity = color.getAlpha(); + if (opacity !== 1) { + //change the color in rgb + opacity + str += prop + '-opacity: ' + opacity.toString() + '; '; + } + return str; + } + } + + var toFixed = fabric.util.toFixed; + + fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { + /** + * Returns styles-string for svg-export + * @param {Boolean} skipShadow a boolean to skip shadow filter output + * @return {String} + */ + getSvgStyles: function(skipShadow) { + + var fillRule = this.fillRule ? this.fillRule : 'nonzero', + strokeWidth = this.strokeWidth ? this.strokeWidth : '0', + strokeDashArray = this.strokeDashArray ? this.strokeDashArray.join(' ') : 'none', + strokeDashOffset = this.strokeDashOffset ? this.strokeDashOffset : '0', + strokeLineCap = this.strokeLineCap ? this.strokeLineCap : 'butt', + strokeLineJoin = this.strokeLineJoin ? this.strokeLineJoin : 'miter', + strokeMiterLimit = this.strokeMiterLimit ? this.strokeMiterLimit : '4', + opacity = typeof this.opacity !== 'undefined' ? this.opacity : '1', + visibility = this.visible ? '' : ' visibility: hidden;', + filter = skipShadow ? '' : this.getSvgFilter(), + fill = getSvgColorString('fill', this.fill), + stroke = getSvgColorString('stroke', this.stroke); + + return [ + stroke, + 'stroke-width: ', strokeWidth, '; ', + 'stroke-dasharray: ', strokeDashArray, '; ', + 'stroke-linecap: ', strokeLineCap, '; ', + 'stroke-dashoffset: ', strokeDashOffset, '; ', + 'stroke-linejoin: ', strokeLineJoin, '; ', + 'stroke-miterlimit: ', strokeMiterLimit, '; ', + fill, + 'fill-rule: ', fillRule, '; ', + 'opacity: ', opacity, ';', + filter, + visibility + ].join(''); + }, + + /** + * Returns styles-string for svg-export + * @param {Object} style the object from which to retrieve style properties + * @param {Boolean} useWhiteSpace a boolean to include an additional attribute in the style. + * @return {String} + */ + getSvgSpanStyles: function(style, useWhiteSpace) { + var term = '; '; + var fontFamily = style.fontFamily ? + 'font-family: ' + (((style.fontFamily.indexOf('\'') === -1 && style.fontFamily.indexOf('"') === -1) ? + '\'' + style.fontFamily + '\'' : style.fontFamily)) + term : ''; + var strokeWidth = style.strokeWidth ? 'stroke-width: ' + style.strokeWidth + term : '', + fontFamily = fontFamily, + fontSize = style.fontSize ? 'font-size: ' + style.fontSize + 'px' + term : '', + fontStyle = style.fontStyle ? 'font-style: ' + style.fontStyle + term : '', + fontWeight = style.fontWeight ? 'font-weight: ' + style.fontWeight + term : '', + fill = style.fill ? getSvgColorString('fill', style.fill) : '', + stroke = style.stroke ? getSvgColorString('stroke', style.stroke) : '', + textDecoration = this.getSvgTextDecoration(style), + deltaY = style.deltaY ? 'baseline-shift: ' + (-style.deltaY) + '; ' : ''; + if (textDecoration) { + textDecoration = 'text-decoration: ' + textDecoration + term; + } + + return [ + stroke, + strokeWidth, + fontFamily, + fontSize, + fontStyle, + fontWeight, + textDecoration, + fill, + deltaY, + useWhiteSpace ? 'white-space: pre; ' : '' + ].join(''); + }, + + /** + * Returns text-decoration property for svg-export + * @param {Object} style the object from which to retrieve style properties + * @return {String} + */ + getSvgTextDecoration: function(style) { + return ['overline', 'underline', 'line-through'].filter(function(decoration) { + return style[decoration.replace('-', '')]; + }).join(' '); + }, + + /** + * Returns filter for svg shadow + * @return {String} + */ + getSvgFilter: function() { + return this.shadow ? 'filter: url(#SVGID_' + this.shadow.id + ');' : ''; + }, + + /** + * Returns id attribute for svg output + * @return {String} + */ + getSvgCommons: function() { + return [ + this.id ? 'id="' + this.id + '" ' : '', + this.clipPath ? 'clip-path="url(#' + this.clipPath.clipPathId + ')" ' : '', + ].join(''); + }, + + /** + * Returns transform-string for svg-export + * @param {Boolean} use the full transform or the single object one. + * @return {String} + */ + getSvgTransform: function(full, additionalTransform) { + var transform = full ? this.calcTransformMatrix() : this.calcOwnMatrix(), + svgTransform = 'transform="' + fabric.util.matrixToSVG(transform); + return svgTransform + + (additionalTransform || '') + '" '; + }, + + _setSVGBg: function(textBgRects) { + if (this.backgroundColor) { + var NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; + textBgRects.push( + '\t\t\n'); + } + }, + + /** + * Returns svg representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toSVG: function(reviver) { + return this._createBaseSVGMarkup(this._toSVG(reviver), { reviver: reviver }); + }, + + /** + * Returns svg clipPath representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toClipPathSVG: function(reviver) { + return '\t' + this._createBaseClipPathSVGMarkup(this._toSVG(reviver), { reviver: reviver }); + }, + + /** + * @private + */ + _createBaseClipPathSVGMarkup: function(objectMarkup, options) { + options = options || {}; + var reviver = options.reviver, + additionalTransform = options.additionalTransform || '', + commonPieces = [ + this.getSvgTransform(true, additionalTransform), + this.getSvgCommons(), + ].join(''), + // insert commons in the markup, style and svgCommons + index = objectMarkup.indexOf('COMMON_PARTS'); + objectMarkup[index] = commonPieces; + return reviver ? reviver(objectMarkup.join('')) : objectMarkup.join(''); + }, + + /** + * @private + */ + _createBaseSVGMarkup: function(objectMarkup, options) { + options = options || {}; + var noStyle = options.noStyle, + reviver = options.reviver, + styleInfo = noStyle ? '' : 'style="' + this.getSvgStyles() + '" ', + shadowInfo = options.withShadow ? 'style="' + this.getSvgFilter() + '" ' : '', + clipPath = this.clipPath, + vectorEffect = this.strokeUniform ? 'vector-effect="non-scaling-stroke" ' : '', + absoluteClipPath = clipPath && clipPath.absolutePositioned, + stroke = this.stroke, fill = this.fill, shadow = this.shadow, + commonPieces, markup = [], clipPathMarkup, + // insert commons in the markup, style and svgCommons + index = objectMarkup.indexOf('COMMON_PARTS'), + additionalTransform = options.additionalTransform; + if (clipPath) { + clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++; + clipPathMarkup = '\n' + + clipPath.toClipPathSVG(reviver) + + '\n'; + } + if (absoluteClipPath) { + markup.push( + '\n' + ); + } + markup.push( + '\n' + ); + commonPieces = [ + styleInfo, + vectorEffect, + noStyle ? '' : this.addPaintOrder(), ' ', + additionalTransform ? 'transform="' + additionalTransform + '" ' : '', + ].join(''); + objectMarkup[index] = commonPieces; + if (fill && fill.toLive) { + markup.push(fill.toSVG(this)); + } + if (stroke && stroke.toLive) { + markup.push(stroke.toSVG(this)); + } + if (shadow) { + markup.push(shadow.toSVG(this)); + } + if (clipPath) { + markup.push(clipPathMarkup); + } + markup.push(objectMarkup.join('')); + markup.push('\n'); + absoluteClipPath && markup.push('\n'); + return reviver ? reviver(markup.join('')) : markup.join(''); + }, + + addPaintOrder: function() { + return this.paintFirst !== 'fill' ? ' paint-order="' + this.paintFirst + '" ' : ''; + } + }); +})(); +/* _TO_SVG_END_ */ + + +(function() { + + var extend = fabric.util.object.extend, + originalSet = 'stateProperties'; + + /* + Depends on `stateProperties` + */ + function saveProps(origin, destination, props) { + var tmpObj = { }, deep = true; + props.forEach(function(prop) { + tmpObj[prop] = origin[prop]; + }); + + extend(origin[destination], tmpObj, deep); + } + + function _isEqual(origValue, currentValue, firstPass) { + if (origValue === currentValue) { + // if the objects are identical, return + return true; + } + else if (Array.isArray(origValue)) { + if (!Array.isArray(currentValue) || origValue.length !== currentValue.length) { + return false; + } + for (var i = 0, len = origValue.length; i < len; i++) { + if (!_isEqual(origValue[i], currentValue[i])) { + return false; + } + } + return true; + } + else if (origValue && typeof origValue === 'object') { + var keys = Object.keys(origValue), key; + if (!currentValue || + typeof currentValue !== 'object' || + (!firstPass && keys.length !== Object.keys(currentValue).length) + ) { + return false; + } + for (var i = 0, len = keys.length; i < len; i++) { + key = keys[i]; + // since clipPath is in the statefull cache list and the clipPath objects + // would be iterated as an object, this would lead to possible infinite recursion + // we do not want to compare those. + if (key === 'canvas' || key === 'group') { + continue; + } + if (!_isEqual(origValue[key], currentValue[key])) { + return false; + } + } + return true; + } + } + + + fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { + + /** + * Returns true if object state (one of its state properties) was changed + * @param {String} [propertySet] optional name for the set of property we want to save + * @return {Boolean} true if instance' state has changed since `{@link fabric.Object#saveState}` was called + */ + hasStateChanged: function(propertySet) { + propertySet = propertySet || originalSet; + var dashedPropertySet = '_' + propertySet; + if (Object.keys(this[dashedPropertySet]).length < this[propertySet].length) { + return true; + } + return !_isEqual(this[dashedPropertySet], this, true); + }, + + /** + * Saves state of an object + * @param {Object} [options] Object with additional `stateProperties` array to include when saving state + * @return {fabric.Object} thisArg + */ + saveState: function(options) { + var propertySet = options && options.propertySet || originalSet, + destination = '_' + propertySet; + if (!this[destination]) { + return this.setupState(options); + } + saveProps(this, destination, this[propertySet]); + if (options && options.stateProperties) { + saveProps(this, destination, options.stateProperties); + } + return this; + }, + + /** + * Setups state of an object + * @param {Object} [options] Object with additional `stateProperties` array to include when saving state + * @return {fabric.Object} thisArg + */ + setupState: function(options) { + options = options || { }; + var propertySet = options.propertySet || originalSet; + options.propertySet = propertySet; + this['_' + propertySet] = { }; + this.saveState(options); + return this; + } + }); +})(); + + +(function() { + + var degreesToRadians = fabric.util.degreesToRadians; + + fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { + /** + * Determines which corner has been clicked + * @private + * @param {Object} pointer The pointer indicating the mouse position + * @return {String|Boolean} corner code (tl, tr, bl, br, etc.), or false if nothing is found + */ + _findTargetCorner: function(pointer, forTouch) { + // objects in group, anykind, are not self modificable, + // must not return an hovered corner. + if (!this.hasControls || this.group || (!this.canvas || this.canvas._activeObject !== this)) { + return false; + } + + var ex = pointer.x, + ey = pointer.y, + xPoints, + lines, keys = Object.keys(this.oCoords), + j = keys.length - 1, i; + this.__corner = 0; + + // cycle in reverse order so we pick first the one on top + for (; j >= 0; j--) { + i = keys[j]; + if (!this.isControlVisible(i)) { + continue; + } + + lines = this._getImageLines(forTouch ? this.oCoords[i].touchCorner : this.oCoords[i].corner); + // // debugging + // + // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2); + // + // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2); + // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2); + + xPoints = this._findCrossPoints({ x: ex, y: ey }, lines); + if (xPoints !== 0 && xPoints % 2 === 1) { + this.__corner = i; + return i; + } + } + return false; + }, + + /** + * Calls a function for each control. The function gets called, + * with the control, the object that is calling the iterator and the control's key + * @param {Function} fn function to iterate over the controls over + */ + forEachControl: function(fn) { + for (var i in this.controls) { + fn(this.controls[i], i, this); + }; + }, + + /** + * Sets the coordinates of the draggable boxes in the corners of + * the image used to scale/rotate it. + * note: if we would switch to ROUND corner area, all of this would disappear. + * everything would resolve to a single point and a pythagorean theorem for the distance + * @private + */ + _setCornerCoords: function() { + var coords = this.oCoords; + + for (var control in coords) { + var controlObject = this.controls[control]; + coords[control].corner = controlObject.calcCornerCoords( + this.angle, this.cornerSize, coords[control].x, coords[control].y, false); + coords[control].touchCorner = controlObject.calcCornerCoords( + this.angle, this.touchCornerSize, coords[control].x, coords[control].y, true); + } + }, + + /** + * Draws a colored layer behind the object, inside its selection borders. + * Requires public options: padding, selectionBackgroundColor + * this function is called when the context is transformed + * has checks to be skipped when the object is on a staticCanvas + * @param {CanvasRenderingContext2D} ctx Context to draw on + * @return {fabric.Object} thisArg + * @chainable + */ + drawSelectionBackground: function(ctx) { + if (!this.selectionBackgroundColor || + (this.canvas && !this.canvas.interactive) || + (this.canvas && this.canvas._activeObject !== this) + ) { + return this; + } + ctx.save(); + var center = this.getCenterPoint(), wh = this._calculateCurrentDimensions(), + vpt = this.canvas.viewportTransform; + ctx.translate(center.x, center.y); + ctx.scale(1 / vpt[0], 1 / vpt[3]); + ctx.rotate(degreesToRadians(this.angle)); + ctx.fillStyle = this.selectionBackgroundColor; + ctx.fillRect(-wh.x / 2, -wh.y / 2, wh.x, wh.y); + ctx.restore(); + return this; + }, + + /** + * Draws borders of an object's bounding box. + * Requires public properties: width, height + * Requires public options: padding, borderColor + * @param {CanvasRenderingContext2D} ctx Context to draw on + * @param {Object} styleOverride object to override the object style + * @return {fabric.Object} thisArg + * @chainable + */ + drawBorders: function(ctx, styleOverride) { + styleOverride = styleOverride || {}; + var wh = this._calculateCurrentDimensions(), + strokeWidth = this.borderScaleFactor, + width = wh.x + strokeWidth, + height = wh.y + strokeWidth, + hasControls = typeof styleOverride.hasControls !== 'undefined' ? + styleOverride.hasControls : this.hasControls, + shouldStroke = false; + + ctx.save(); + ctx.strokeStyle = styleOverride.borderColor || this.borderColor; + this._setLineDash(ctx, styleOverride.borderDashArray || this.borderDashArray); + + ctx.strokeRect( + -width / 2, + -height / 2, + width, + height + ); + + if (hasControls) { + ctx.beginPath(); + this.forEachControl(function(control, key, fabricObject) { + // in this moment, the ctx is centered on the object. + // width and height of the above function are the size of the bbox. + if (control.withConnection && control.getVisibility(fabricObject, key)) { + // reset movement for each control + shouldStroke = true; + ctx.moveTo(control.x * width, control.y * height); + ctx.lineTo( + control.x * width + control.offsetX, + control.y * height + control.offsetY + ); + } + }); + if (shouldStroke) { + ctx.stroke(); + } + } + ctx.restore(); + return this; + }, + + /** + * Draws borders of an object's bounding box when it is inside a group. + * Requires public properties: width, height + * Requires public options: padding, borderColor + * @param {CanvasRenderingContext2D} ctx Context to draw on + * @param {object} options object representing current object parameters + * @param {Object} styleOverride object to override the object style + * @return {fabric.Object} thisArg + * @chainable + */ + drawBordersInGroup: function(ctx, options, styleOverride) { + styleOverride = styleOverride || {}; + var bbox = fabric.util.sizeAfterTransform(this.width, this.height, options), + strokeWidth = this.strokeWidth, + strokeUniform = this.strokeUniform, + borderScaleFactor = this.borderScaleFactor, + width = + bbox.x + strokeWidth * (strokeUniform ? this.canvas.getZoom() : options.scaleX) + borderScaleFactor, + height = + bbox.y + strokeWidth * (strokeUniform ? this.canvas.getZoom() : options.scaleY) + borderScaleFactor; + ctx.save(); + this._setLineDash(ctx, styleOverride.borderDashArray || this.borderDashArray); + ctx.strokeStyle = styleOverride.borderColor || this.borderColor; + ctx.strokeRect( + -width / 2, + -height / 2, + width, + height + ); + + ctx.restore(); + return this; + }, + + /** + * Draws corners of an object's bounding box. + * Requires public properties: width, height + * Requires public options: cornerSize, padding + * @param {CanvasRenderingContext2D} ctx Context to draw on + * @param {Object} styleOverride object to override the object style + * @return {fabric.Object} thisArg + * @chainable + */ + drawControls: function(ctx, styleOverride) { + styleOverride = styleOverride || {}; + ctx.save(); + var retinaScaling = this.canvas.getRetinaScaling(), matrix, p; + ctx.setTransform(retinaScaling, 0, 0, retinaScaling, 0, 0); + ctx.strokeStyle = ctx.fillStyle = styleOverride.cornerColor || this.cornerColor; + if (!this.transparentCorners) { + ctx.strokeStyle = styleOverride.cornerStrokeColor || this.cornerStrokeColor; + } + this._setLineDash(ctx, styleOverride.cornerDashArray || this.cornerDashArray); + this.setCoords(); + if (this.group) { + // fabricJS does not really support drawing controls inside groups, + // this piece of code here helps having at least the control in places. + // If an application needs to show some objects as selected because of some UI state + // can still call Object._renderControls() on any object they desire, independently of groups. + // using no padding, circular controls and hiding the rotating cursor is higly suggested, + matrix = this.group.calcTransformMatrix(); + } + this.forEachControl(function(control, key, fabricObject) { + p = fabricObject.oCoords[key]; + if (control.getVisibility(fabricObject, key)) { + if (matrix) { + p = fabric.util.transformPoint(p, matrix); + } + control.render(ctx, p.x, p.y, styleOverride, fabricObject); + } + }); + ctx.restore(); + + return this; + }, + + /** + * Returns true if the specified control is visible, false otherwise. + * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'. + * @returns {Boolean} true if the specified control is visible, false otherwise + */ + isControlVisible: function(controlKey) { + return this.controls[controlKey] && this.controls[controlKey].getVisibility(this, controlKey); + }, + + /** + * Sets the visibility of the specified control. + * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'. + * @param {Boolean} visible true to set the specified control visible, false otherwise + * @return {fabric.Object} thisArg + * @chainable + */ + setControlVisible: function(controlKey, visible) { + if (!this._controlsVisibility) { + this._controlsVisibility = {}; + } + this._controlsVisibility[controlKey] = visible; + return this; + }, + + /** + * Sets the visibility state of object controls. + * @param {Object} [options] Options object + * @param {Boolean} [options.bl] true to enable the bottom-left control, false to disable it + * @param {Boolean} [options.br] true to enable the bottom-right control, false to disable it + * @param {Boolean} [options.mb] true to enable the middle-bottom control, false to disable it + * @param {Boolean} [options.ml] true to enable the middle-left control, false to disable it + * @param {Boolean} [options.mr] true to enable the middle-right control, false to disable it + * @param {Boolean} [options.mt] true to enable the middle-top control, false to disable it + * @param {Boolean} [options.tl] true to enable the top-left control, false to disable it + * @param {Boolean} [options.tr] true to enable the top-right control, false to disable it + * @param {Boolean} [options.mtr] true to enable the middle-top-rotate control, false to disable it + * @return {fabric.Object} thisArg + * @chainable + */ + setControlsVisibility: function(options) { + options || (options = { }); + + for (var p in options) { + this.setControlVisible(p, options[p]); + } + return this; + }, + + + /** + * This callback function is called every time _discardActiveObject or _setActiveObject + * try to to deselect this object. If the function returns true, the process is cancelled + * @param {Object} [options] options sent from the upper functions + * @param {Event} [options.e] event if the process is generated by an event + */ + onDeselect: function() { + // implemented by sub-classes, as needed. + }, + + + /** + * This callback function is called every time _discardActiveObject or _setActiveObject + * try to to select this object. If the function returns true, the process is cancelled + * @param {Object} [options] options sent from the upper functions + * @param {Event} [options.e] event if the process is generated by an event + */ + onSelect: function() { + // implemented by sub-classes, as needed. + } + }); +})(); + + +fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ { + + /** + * Animation duration (in ms) for fx* methods + * @type Number + * @default + */ + FX_DURATION: 500, + + /** + * Centers object horizontally with animation. + * @param {fabric.Object} object Object to center + * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties + * @param {Function} [callbacks.onComplete] Invoked on completion + * @param {Function} [callbacks.onChange] Invoked on every step of animation + * @return {fabric.AnimationContext} context + */ + fxCenterObjectH: function (object, callbacks) { + callbacks = callbacks || { }; + + var empty = function() { }, + onComplete = callbacks.onComplete || empty, + onChange = callbacks.onChange || empty, + _this = this; + + return fabric.util.animate({ + target: this, + startValue: object.left, + endValue: this.getCenter().left, + duration: this.FX_DURATION, + onChange: function(value) { + object.set('left', value); + _this.requestRenderAll(); + onChange(); + }, + onComplete: function() { + object.setCoords(); + onComplete(); + } + }); + }, + + /** + * Centers object vertically with animation. + * @param {fabric.Object} object Object to center + * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties + * @param {Function} [callbacks.onComplete] Invoked on completion + * @param {Function} [callbacks.onChange] Invoked on every step of animation + * @return {fabric.AnimationContext} context + */ + fxCenterObjectV: function (object, callbacks) { + callbacks = callbacks || { }; + + var empty = function() { }, + onComplete = callbacks.onComplete || empty, + onChange = callbacks.onChange || empty, + _this = this; + + return fabric.util.animate({ + target: this, + startValue: object.top, + endValue: this.getCenter().top, + duration: this.FX_DURATION, + onChange: function(value) { + object.set('top', value); + _this.requestRenderAll(); + onChange(); + }, + onComplete: function() { + object.setCoords(); + onComplete(); + } + }); + }, + + /** + * Same as `fabric.Canvas#remove` but animated + * @param {fabric.Object} object Object to remove + * @param {Object} [callbacks] Callbacks object with optional "onComplete" and/or "onChange" properties + * @param {Function} [callbacks.onComplete] Invoked on completion + * @param {Function} [callbacks.onChange] Invoked on every step of animation + * @return {fabric.AnimationContext} context + */ + fxRemove: function (object, callbacks) { + callbacks = callbacks || { }; + + var empty = function() { }, + onComplete = callbacks.onComplete || empty, + onChange = callbacks.onChange || empty, + _this = this; + + return fabric.util.animate({ + target: this, + startValue: object.opacity, + endValue: 0, + duration: this.FX_DURATION, + onChange: function(value) { + object.set('opacity', value); + _this.requestRenderAll(); + onChange(); + }, + onComplete: function () { + _this.remove(object); + onComplete(); + } + }); + } +}); + +fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { + /** + * Animates object's properties + * @param {String|Object} property Property to animate (if string) or properties to animate (if object) + * @param {Number|Object} value Value to animate property to (if string was given first) or options object + * @return {fabric.Object} thisArg + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#animation} + * @return {fabric.AnimationContext | fabric.AnimationContext[]} animation context (or an array if passed multiple properties) + * + * As object — multiple properties + * + * object.animate({ left: ..., top: ... }); + * object.animate({ left: ..., top: ... }, { duration: ... }); + * + * As string — one property + * + * object.animate('left', ...); + * object.animate('left', { duration: ... }); + * + */ + animate: function () { + if (arguments[0] && typeof arguments[0] === 'object') { + var propsToAnimate = [], prop, skipCallbacks, out = []; + for (prop in arguments[0]) { + propsToAnimate.push(prop); + } + for (var i = 0, len = propsToAnimate.length; i < len; i++) { + prop = propsToAnimate[i]; + skipCallbacks = i !== len - 1; + out.push(this._animate(prop, arguments[0][prop], arguments[1], skipCallbacks)); + } + return out; + } + else { + return this._animate.apply(this, arguments); + } + }, + + /** + * @private + * @param {String} property Property to animate + * @param {String} to Value to animate to + * @param {Object} [options] Options object + * @param {Boolean} [skipCallbacks] When true, callbacks like onchange and oncomplete are not invoked + */ + _animate: function(property, to, options, skipCallbacks) { + var _this = this, propPair; + + to = to.toString(); + + if (!options) { + options = { }; + } + else { + options = fabric.util.object.clone(options); + } + + if (~property.indexOf('.')) { + propPair = property.split('.'); + } + + var propIsColor = + _this.colorProperties.indexOf(property) > -1 || + (propPair && _this.colorProperties.indexOf(propPair[1]) > -1); + + var currentValue = propPair + ? this.get(propPair[0])[propPair[1]] + : this.get(property); + + if (!('from' in options)) { + options.from = currentValue; + } + + if (!propIsColor) { + if (~to.indexOf('=')) { + to = currentValue + parseFloat(to.replace('=', '')); + } + else { + to = parseFloat(to); + } + } + + var _options = { + target: this, + startValue: options.from, + endValue: to, + byValue: options.by, + easing: options.easing, + duration: options.duration, + abort: options.abort && function(value, valueProgress, timeProgress) { + return options.abort.call(_this, value, valueProgress, timeProgress); + }, + onChange: function (value, valueProgress, timeProgress) { + if (propPair) { + _this[propPair[0]][propPair[1]] = value; + } + else { + _this.set(property, value); + } + if (skipCallbacks) { + return; + } + options.onChange && options.onChange(value, valueProgress, timeProgress); + }, + onComplete: function (value, valueProgress, timeProgress) { + if (skipCallbacks) { + return; + } + + _this.setCoords(); + options.onComplete && options.onComplete(value, valueProgress, timeProgress); + } + }; + + if (propIsColor) { + return fabric.util.animateColor(_options.startValue, _options.endValue, _options.duration, _options); + } + else { + return fabric.util.animate(_options); + } + } +}); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + extend = fabric.util.object.extend, + clone = fabric.util.object.clone, + coordProps = { x1: 1, x2: 1, y1: 1, y2: 1 }; + + if (fabric.Line) { + fabric.warn('fabric.Line is already defined'); + return; + } + + /** + * Line class + * @class fabric.Line + * @extends fabric.Object + * @see {@link fabric.Line#initialize} for constructor definition + */ + fabric.Line = fabric.util.createClass(fabric.Object, /** @lends fabric.Line.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'line', + + /** + * x value or first line edge + * @type Number + * @default + */ + x1: 0, + + /** + * y value or first line edge + * @type Number + * @default + */ + y1: 0, + + /** + * x value or second line edge + * @type Number + * @default + */ + x2: 0, + + /** + * y value or second line edge + * @type Number + * @default + */ + y2: 0, + + cacheProperties: fabric.Object.prototype.cacheProperties.concat('x1', 'x2', 'y1', 'y2'), + + /** + * Constructor + * @param {Array} [points] Array of points + * @param {Object} [options] Options object + * @return {fabric.Line} thisArg + */ + initialize: function(points, options) { + if (!points) { + points = [0, 0, 0, 0]; + } + + this.callSuper('initialize', options); + + this.set('x1', points[0]); + this.set('y1', points[1]); + this.set('x2', points[2]); + this.set('y2', points[3]); + + this._setWidthHeight(options); + }, + + /** + * @private + * @param {Object} [options] Options + */ + _setWidthHeight: function(options) { + options || (options = { }); + + this.width = Math.abs(this.x2 - this.x1); + this.height = Math.abs(this.y2 - this.y1); + + this.left = 'left' in options + ? options.left + : this._getLeftToOriginX(); + + this.top = 'top' in options + ? options.top + : this._getTopToOriginY(); + }, + + /** + * @private + * @param {String} key + * @param {*} value + */ + _set: function(key, value) { + this.callSuper('_set', key, value); + if (typeof coordProps[key] !== 'undefined') { + this._setWidthHeight(); + } + return this; + }, + + /** + * @private + * @return {Number} leftToOriginX Distance from left edge of canvas to originX of Line. + */ + _getLeftToOriginX: makeEdgeToOriginGetter( + { // property names + origin: 'originX', + axis1: 'x1', + axis2: 'x2', + dimension: 'width' + }, + { // possible values of origin + nearest: 'left', + center: 'center', + farthest: 'right' + } + ), + + /** + * @private + * @return {Number} topToOriginY Distance from top edge of canvas to originY of Line. + */ + _getTopToOriginY: makeEdgeToOriginGetter( + { // property names + origin: 'originY', + axis1: 'y1', + axis2: 'y2', + dimension: 'height' + }, + { // possible values of origin + nearest: 'top', + center: 'center', + farthest: 'bottom' + } + ), + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function(ctx) { + ctx.beginPath(); + + + var p = this.calcLinePoints(); + ctx.moveTo(p.x1, p.y1); + ctx.lineTo(p.x2, p.y2); + + ctx.lineWidth = this.strokeWidth; + + // TODO: test this + // make sure setting "fill" changes color of a line + // (by copying fillStyle to strokeStyle, since line is stroked, not filled) + var origStrokeStyle = ctx.strokeStyle; + ctx.strokeStyle = this.stroke || ctx.fillStyle; + this.stroke && this._renderStroke(ctx); + ctx.strokeStyle = origStrokeStyle; + }, + + /** + * This function is an helper for svg import. it returns the center of the object in the svg + * untransformed coordinates + * @private + * @return {Object} center point from element coordinates + */ + _findCenterFromElement: function() { + return { + x: (this.x1 + this.x2) / 2, + y: (this.y1 + this.y2) / 2, + }; + }, + + /** + * Returns object representation of an instance + * @method toObject + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function(propertiesToInclude) { + return extend(this.callSuper('toObject', propertiesToInclude), this.calcLinePoints()); + }, + + /* + * Calculate object dimensions from its properties + * @private + */ + _getNonTransformedDimensions: function() { + var dim = this.callSuper('_getNonTransformedDimensions'); + if (this.strokeLineCap === 'butt') { + if (this.width === 0) { + dim.y -= this.strokeWidth; + } + if (this.height === 0) { + dim.x -= this.strokeWidth; + } + } + return dim; + }, + + /** + * Recalculates line points given width and height + * @private + */ + calcLinePoints: function() { + var xMult = this.x1 <= this.x2 ? -1 : 1, + yMult = this.y1 <= this.y2 ? -1 : 1, + x1 = (xMult * this.width * 0.5), + y1 = (yMult * this.height * 0.5), + x2 = (xMult * this.width * -0.5), + y2 = (yMult * this.height * -0.5); + + return { + x1: x1, + x2: x2, + y1: y1, + y2: y2 + }; + }, + + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function() { + var p = this.calcLinePoints(); + return [ + '\n' + ]; + }, + /* _TO_SVG_END_ */ + }); + + /* _FROM_SVG_START_ */ + /** + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Line.fromElement}) + * @static + * @memberOf fabric.Line + * @see http://www.w3.org/TR/SVG/shapes.html#LineElement + */ + fabric.Line.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x1 y1 x2 y2'.split(' ')); + + /** + * Returns fabric.Line instance from an SVG element + * @static + * @memberOf fabric.Line + * @param {SVGElement} element Element to parse + * @param {Object} [options] Options object + * @param {Function} [callback] callback function invoked after parsing + */ + fabric.Line.fromElement = function(element, callback, options) { + options = options || { }; + var parsedAttributes = fabric.parseAttributes(element, fabric.Line.ATTRIBUTE_NAMES), + points = [ + parsedAttributes.x1 || 0, + parsedAttributes.y1 || 0, + parsedAttributes.x2 || 0, + parsedAttributes.y2 || 0 + ]; + callback(new fabric.Line(points, extend(parsedAttributes, options))); + }; + /* _FROM_SVG_END_ */ + + /** + * Returns fabric.Line instance from an object representation + * @static + * @memberOf fabric.Line + * @param {Object} object Object to create an instance from + * @param {function} [callback] invoked with new instance as first argument + */ + fabric.Line.fromObject = function(object, callback) { + function _callback(instance) { + delete instance.points; + callback && callback(instance); + }; + var options = clone(object, true); + options.points = [object.x1, object.y1, object.x2, object.y2]; + fabric.Object._fromObject('Line', options, _callback, 'points'); + }; + + /** + * Produces a function that calculates distance from canvas edge to Line origin. + */ + function makeEdgeToOriginGetter(propertyNames, originValues) { + var origin = propertyNames.origin, + axis1 = propertyNames.axis1, + axis2 = propertyNames.axis2, + dimension = propertyNames.dimension, + nearest = originValues.nearest, + center = originValues.center, + farthest = originValues.farthest; + + return function() { + switch (this.get(origin)) { + case nearest: + return Math.min(this.get(axis1), this.get(axis2)); + case center: + return Math.min(this.get(axis1), this.get(axis2)) + (0.5 * this.get(dimension)); + case farthest: + return Math.max(this.get(axis1), this.get(axis2)); + } + }; + + } + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + degreesToRadians = fabric.util.degreesToRadians; + + if (fabric.Circle) { + fabric.warn('fabric.Circle is already defined.'); + return; + } + + /** + * Circle class + * @class fabric.Circle + * @extends fabric.Object + * @see {@link fabric.Circle#initialize} for constructor definition + */ + fabric.Circle = fabric.util.createClass(fabric.Object, /** @lends fabric.Circle.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'circle', + + /** + * Radius of this circle + * @type Number + * @default + */ + radius: 0, + + /** + * degrees of start of the circle. + * probably will change to degrees in next major version + * @type Number 0 - 359 + * @default 0 + */ + startAngle: 0, + + /** + * End angle of the circle + * probably will change to degrees in next major version + * @type Number 1 - 360 + * @default 360 + */ + endAngle: 360, + + cacheProperties: fabric.Object.prototype.cacheProperties.concat('radius', 'startAngle', 'endAngle'), + + /** + * @private + * @param {String} key + * @param {*} value + * @return {fabric.Circle} thisArg + */ + _set: function(key, value) { + this.callSuper('_set', key, value); + + if (key === 'radius') { + this.setRadius(value); + } + + return this; + }, + + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function(propertiesToInclude) { + return this.callSuper('toObject', ['radius', 'startAngle', 'endAngle'].concat(propertiesToInclude)); + }, + + /* _TO_SVG_START_ */ + + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function() { + var svgString, x = 0, y = 0, + angle = (this.endAngle - this.startAngle) % 360; + + if (angle === 0) { + svgString = [ + '\n' + ]; + } + else { + var start = degreesToRadians(this.startAngle), + end = degreesToRadians(this.endAngle), + radius = this.radius, + startX = fabric.util.cos(start) * radius, + startY = fabric.util.sin(start) * radius, + endX = fabric.util.cos(end) * radius, + endY = fabric.util.sin(end) * radius, + largeFlag = angle > 180 ? '1' : '0'; + svgString = [ + '\n' + ]; + } + return svgString; + }, + /* _TO_SVG_END_ */ + + /** + * @private + * @param {CanvasRenderingContext2D} ctx context to render on + */ + _render: function(ctx) { + ctx.beginPath(); + ctx.arc( + 0, + 0, + this.radius, + degreesToRadians(this.startAngle), + degreesToRadians(this.endAngle), + false + ); + this._renderPaintInOrder(ctx); + }, + + /** + * Returns horizontal radius of an object (according to how an object is scaled) + * @return {Number} + */ + getRadiusX: function() { + return this.get('radius') * this.get('scaleX'); + }, + + /** + * Returns vertical radius of an object (according to how an object is scaled) + * @return {Number} + */ + getRadiusY: function() { + return this.get('radius') * this.get('scaleY'); + }, + + /** + * Sets radius of an object (and updates width accordingly) + * @return {fabric.Circle} thisArg + */ + setRadius: function(value) { + this.radius = value; + return this.set('width', value * 2).set('height', value * 2); + }, + }); + + /* _FROM_SVG_START_ */ + /** + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Circle.fromElement}) + * @static + * @memberOf fabric.Circle + * @see: http://www.w3.org/TR/SVG/shapes.html#CircleElement + */ + fabric.Circle.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('cx cy r'.split(' ')); + + /** + * Returns {@link fabric.Circle} instance from an SVG element + * @static + * @memberOf fabric.Circle + * @param {SVGElement} element Element to parse + * @param {Function} [callback] Options callback invoked after parsing is finished + * @param {Object} [options] Options object + * @throws {Error} If value of `r` attribute is missing or invalid + */ + fabric.Circle.fromElement = function(element, callback) { + var parsedAttributes = fabric.parseAttributes(element, fabric.Circle.ATTRIBUTE_NAMES); + + if (!isValidRadius(parsedAttributes)) { + throw new Error('value of `r` attribute is required and can not be negative'); + } + + parsedAttributes.left = (parsedAttributes.left || 0) - parsedAttributes.radius; + parsedAttributes.top = (parsedAttributes.top || 0) - parsedAttributes.radius; + callback(new fabric.Circle(parsedAttributes)); + }; + + /** + * @private + */ + function isValidRadius(attributes) { + return (('radius' in attributes) && (attributes.radius >= 0)); + } + /* _FROM_SVG_END_ */ + + /** + * Returns {@link fabric.Circle} instance from an object representation + * @static + * @memberOf fabric.Circle + * @param {Object} object Object to create an instance from + * @param {function} [callback] invoked with new instance as first argument + * @return {void} + */ + fabric.Circle.fromObject = function(object, callback) { + fabric.Object._fromObject('Circle', object, callback); + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }); + + if (fabric.Triangle) { + fabric.warn('fabric.Triangle is already defined'); + return; + } + + /** + * Triangle class + * @class fabric.Triangle + * @extends fabric.Object + * @return {fabric.Triangle} thisArg + * @see {@link fabric.Triangle#initialize} for constructor definition + */ + fabric.Triangle = fabric.util.createClass(fabric.Object, /** @lends fabric.Triangle.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'triangle', + + /** + * Width is set to 100 to compensate the old initialize code that was setting it to 100 + * @type Number + * @default + */ + width: 100, + + /** + * Height is set to 100 to compensate the old initialize code that was setting it to 100 + * @type Number + * @default + */ + height: 100, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function(ctx) { + var widthBy2 = this.width / 2, + heightBy2 = this.height / 2; + + ctx.beginPath(); + ctx.moveTo(-widthBy2, heightBy2); + ctx.lineTo(0, -heightBy2); + ctx.lineTo(widthBy2, heightBy2); + ctx.closePath(); + + this._renderPaintInOrder(ctx); + }, + + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function() { + var widthBy2 = this.width / 2, + heightBy2 = this.height / 2, + points = [ + -widthBy2 + ' ' + heightBy2, + '0 ' + -heightBy2, + widthBy2 + ' ' + heightBy2 + ].join(','); + return [ + '' + ]; + }, + /* _TO_SVG_END_ */ + }); + + /** + * Returns {@link fabric.Triangle} instance from an object representation + * @static + * @memberOf fabric.Triangle + * @param {Object} object Object to create an instance from + * @param {function} [callback] invoked with new instance as first argument + */ + fabric.Triangle.fromObject = function(object, callback) { + return fabric.Object._fromObject('Triangle', object, callback); + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + piBy2 = Math.PI * 2; + + if (fabric.Ellipse) { + fabric.warn('fabric.Ellipse is already defined.'); + return; + } + + /** + * Ellipse class + * @class fabric.Ellipse + * @extends fabric.Object + * @return {fabric.Ellipse} thisArg + * @see {@link fabric.Ellipse#initialize} for constructor definition + */ + fabric.Ellipse = fabric.util.createClass(fabric.Object, /** @lends fabric.Ellipse.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'ellipse', + + /** + * Horizontal radius + * @type Number + * @default + */ + rx: 0, + + /** + * Vertical radius + * @type Number + * @default + */ + ry: 0, + + cacheProperties: fabric.Object.prototype.cacheProperties.concat('rx', 'ry'), + + /** + * Constructor + * @param {Object} [options] Options object + * @return {fabric.Ellipse} thisArg + */ + initialize: function(options) { + this.callSuper('initialize', options); + this.set('rx', options && options.rx || 0); + this.set('ry', options && options.ry || 0); + }, + + /** + * @private + * @param {String} key + * @param {*} value + * @return {fabric.Ellipse} thisArg + */ + _set: function(key, value) { + this.callSuper('_set', key, value); + switch (key) { + + case 'rx': + this.rx = value; + this.set('width', value * 2); + break; + + case 'ry': + this.ry = value; + this.set('height', value * 2); + break; + + } + return this; + }, + + /** + * Returns horizontal radius of an object (according to how an object is scaled) + * @return {Number} + */ + getRx: function() { + return this.get('rx') * this.get('scaleX'); + }, + + /** + * Returns Vertical radius of an object (according to how an object is scaled) + * @return {Number} + */ + getRy: function() { + return this.get('ry') * this.get('scaleY'); + }, + + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function(propertiesToInclude) { + return this.callSuper('toObject', ['rx', 'ry'].concat(propertiesToInclude)); + }, + + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function() { + return [ + '\n' + ]; + }, + /* _TO_SVG_END_ */ + + /** + * @private + * @param {CanvasRenderingContext2D} ctx context to render on + */ + _render: function(ctx) { + ctx.beginPath(); + ctx.save(); + ctx.transform(1, 0, 0, this.ry / this.rx, 0, 0); + ctx.arc( + 0, + 0, + this.rx, + 0, + piBy2, + false); + ctx.restore(); + this._renderPaintInOrder(ctx); + }, + }); + + /* _FROM_SVG_START_ */ + /** + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Ellipse.fromElement}) + * @static + * @memberOf fabric.Ellipse + * @see http://www.w3.org/TR/SVG/shapes.html#EllipseElement + */ + fabric.Ellipse.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('cx cy rx ry'.split(' ')); + + /** + * Returns {@link fabric.Ellipse} instance from an SVG element + * @static + * @memberOf fabric.Ellipse + * @param {SVGElement} element Element to parse + * @param {Function} [callback] Options callback invoked after parsing is finished + * @return {fabric.Ellipse} + */ + fabric.Ellipse.fromElement = function(element, callback) { + + var parsedAttributes = fabric.parseAttributes(element, fabric.Ellipse.ATTRIBUTE_NAMES); + + parsedAttributes.left = (parsedAttributes.left || 0) - parsedAttributes.rx; + parsedAttributes.top = (parsedAttributes.top || 0) - parsedAttributes.ry; + callback(new fabric.Ellipse(parsedAttributes)); + }; + /* _FROM_SVG_END_ */ + + /** + * Returns {@link fabric.Ellipse} instance from an object representation + * @static + * @memberOf fabric.Ellipse + * @param {Object} object Object to create an instance from + * @param {function} [callback] invoked with new instance as first argument + * @return {void} + */ + fabric.Ellipse.fromObject = function(object, callback) { + fabric.Object._fromObject('Ellipse', object, callback); + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + extend = fabric.util.object.extend; + + if (fabric.Rect) { + fabric.warn('fabric.Rect is already defined'); + return; + } + + /** + * Rectangle class + * @class fabric.Rect + * @extends fabric.Object + * @return {fabric.Rect} thisArg + * @see {@link fabric.Rect#initialize} for constructor definition + */ + fabric.Rect = fabric.util.createClass(fabric.Object, /** @lends fabric.Rect.prototype */ { + + /** + * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged}) + * as well as for history (undo/redo) purposes + * @type Array + */ + stateProperties: fabric.Object.prototype.stateProperties.concat('rx', 'ry'), + + /** + * Type of an object + * @type String + * @default + */ + type: 'rect', + + /** + * Horizontal border radius + * @type Number + * @default + */ + rx: 0, + + /** + * Vertical border radius + * @type Number + * @default + */ + ry: 0, + + cacheProperties: fabric.Object.prototype.cacheProperties.concat('rx', 'ry'), + + /** + * Constructor + * @param {Object} [options] Options object + * @return {Object} thisArg + */ + initialize: function(options) { + this.callSuper('initialize', options); + this._initRxRy(); + }, + + /** + * Initializes rx/ry attributes + * @private + */ + _initRxRy: function() { + if (this.rx && !this.ry) { + this.ry = this.rx; + } + else if (this.ry && !this.rx) { + this.rx = this.ry; + } + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function(ctx) { + + // 1x1 case (used in spray brush) optimization was removed because + // with caching and higher zoom level this makes more damage than help + + var rx = this.rx ? Math.min(this.rx, this.width / 2) : 0, + ry = this.ry ? Math.min(this.ry, this.height / 2) : 0, + w = this.width, + h = this.height, + x = -this.width / 2, + y = -this.height / 2, + isRounded = rx !== 0 || ry !== 0, + /* "magic number" for bezier approximations of arcs (http://itc.ktu.lt/itc354/Riskus354.pdf) */ + k = 1 - 0.5522847498; + ctx.beginPath(); + + ctx.moveTo(x + rx, y); + + ctx.lineTo(x + w - rx, y); + isRounded && ctx.bezierCurveTo(x + w - k * rx, y, x + w, y + k * ry, x + w, y + ry); + + ctx.lineTo(x + w, y + h - ry); + isRounded && ctx.bezierCurveTo(x + w, y + h - k * ry, x + w - k * rx, y + h, x + w - rx, y + h); + + ctx.lineTo(x + rx, y + h); + isRounded && ctx.bezierCurveTo(x + k * rx, y + h, x, y + h - k * ry, x, y + h - ry); + + ctx.lineTo(x, y + ry); + isRounded && ctx.bezierCurveTo(x, y + k * ry, x + k * rx, y, x + rx, y); + + ctx.closePath(); + + this._renderPaintInOrder(ctx); + }, + + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function(propertiesToInclude) { + return this.callSuper('toObject', ['rx', 'ry'].concat(propertiesToInclude)); + }, + + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function() { + var x = -this.width / 2, y = -this.height / 2; + return [ + '\n' + ]; + }, + /* _TO_SVG_END_ */ + }); + + /* _FROM_SVG_START_ */ + /** + * List of attribute names to account for when parsing SVG element (used by `fabric.Rect.fromElement`) + * @static + * @memberOf fabric.Rect + * @see: http://www.w3.org/TR/SVG/shapes.html#RectElement + */ + fabric.Rect.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x y rx ry width height'.split(' ')); + + /** + * Returns {@link fabric.Rect} instance from an SVG element + * @static + * @memberOf fabric.Rect + * @param {SVGElement} element Element to parse + * @param {Function} callback callback function invoked after parsing + * @param {Object} [options] Options object + */ + fabric.Rect.fromElement = function(element, callback, options) { + if (!element) { + return callback(null); + } + options = options || { }; + + var parsedAttributes = fabric.parseAttributes(element, fabric.Rect.ATTRIBUTE_NAMES); + parsedAttributes.left = parsedAttributes.left || 0; + parsedAttributes.top = parsedAttributes.top || 0; + parsedAttributes.height = parsedAttributes.height || 0; + parsedAttributes.width = parsedAttributes.width || 0; + var rect = new fabric.Rect(extend((options ? fabric.util.object.clone(options) : { }), parsedAttributes)); + rect.visible = rect.visible && rect.width > 0 && rect.height > 0; + callback(rect); + }; + /* _FROM_SVG_END_ */ + + /** + * Returns {@link fabric.Rect} instance from an object representation + * @static + * @memberOf fabric.Rect + * @param {Object} object Object to create an instance from + * @param {Function} [callback] Callback to invoke when an fabric.Rect instance is created + */ + fabric.Rect.fromObject = function(object, callback) { + return fabric.Object._fromObject('Rect', object, callback); + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + extend = fabric.util.object.extend, + min = fabric.util.array.min, + max = fabric.util.array.max, + toFixed = fabric.util.toFixed, + projectStrokeOnPoints = fabric.util.projectStrokeOnPoints; + + if (fabric.Polyline) { + fabric.warn('fabric.Polyline is already defined'); + return; + } + + /** + * Polyline class + * @class fabric.Polyline + * @extends fabric.Object + * @see {@link fabric.Polyline#initialize} for constructor definition + */ + fabric.Polyline = fabric.util.createClass(fabric.Object, /** @lends fabric.Polyline.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'polyline', + + /** + * Points array + * @type Array + * @default + */ + points: null, + + /** + * WARNING: Feature in progress + * Calculate the exact bounding box taking in account strokeWidth on acute angles + * this will be turned to true by default on fabric 6.0 + * maybe will be left in as an optimization since calculations may be slow + * @deprecated + * @type Boolean + * @default false + */ + exactBoundingBox: false, + + cacheProperties: fabric.Object.prototype.cacheProperties.concat('points'), + + /** + * Constructor + * @param {Array} points Array of points (where each point is an object with x and y) + * @param {Object} [options] Options object + * @return {fabric.Polyline} thisArg + * @example + * var poly = new fabric.Polyline([ + * { x: 10, y: 10 }, + * { x: 50, y: 30 }, + * { x: 40, y: 70 }, + * { x: 60, y: 50 }, + * { x: 100, y: 150 }, + * { x: 40, y: 100 } + * ], { + * stroke: 'red', + * left: 100, + * top: 100 + * }); + */ + initialize: function(points, options) { + options = options || {}; + this.points = points || []; + this.callSuper('initialize', options); + this._setPositionDimensions(options); + }, + + /** + * @private + */ + _projectStrokeOnPoints: function () { + return projectStrokeOnPoints(this.points, this, true); + }, + + _setPositionDimensions: function(options) { + var calcDim = this._calcDimensions(options), correctLeftTop, + correctSize = this.exactBoundingBox ? this.strokeWidth : 0; + this.width = calcDim.width - correctSize; + this.height = calcDim.height - correctSize; + if (!options.fromSVG) { + correctLeftTop = this.translateToGivenOrigin( + { + // this looks bad, but is one way to keep it optional for now. + x: calcDim.left - this.strokeWidth / 2 + correctSize / 2, + y: calcDim.top - this.strokeWidth / 2 + correctSize / 2 + }, + 'left', + 'top', + this.originX, + this.originY + ); + } + if (typeof options.left === 'undefined') { + this.left = options.fromSVG ? calcDim.left : correctLeftTop.x; + } + if (typeof options.top === 'undefined') { + this.top = options.fromSVG ? calcDim.top : correctLeftTop.y; + } + this.pathOffset = { + x: calcDim.left + this.width / 2 + correctSize / 2, + y: calcDim.top + this.height / 2 + correctSize / 2 + }; + }, + + /** + * Calculate the polygon min and max point from points array, + * returning an object with left, top, width, height to measure the + * polygon size + * @return {Object} object.left X coordinate of the polygon leftmost point + * @return {Object} object.top Y coordinate of the polygon topmost point + * @return {Object} object.width distance between X coordinates of the polygon leftmost and rightmost point + * @return {Object} object.height distance between Y coordinates of the polygon topmost and bottommost point + * @private + */ + _calcDimensions: function() { + + var points = this.exactBoundingBox ? this._projectStrokeOnPoints() : this.points, + minX = min(points, 'x') || 0, + minY = min(points, 'y') || 0, + maxX = max(points, 'x') || 0, + maxY = max(points, 'y') || 0, + width = (maxX - minX), + height = (maxY - minY); + + return { + left: minX, + top: minY, + width: width, + height: height, + }; + }, + + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toObject: function(propertiesToInclude) { + return extend(this.callSuper('toObject', propertiesToInclude), { + points: this.points.concat() + }); + }, + + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function() { + var points = [], diffX = this.pathOffset.x, diffY = this.pathOffset.y, + NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; + + for (var i = 0, len = this.points.length; i < len; i++) { + points.push( + toFixed(this.points[i].x - diffX, NUM_FRACTION_DIGITS), ',', + toFixed(this.points[i].y - diffY, NUM_FRACTION_DIGITS), ' ' + ); + } + return [ + '<' + this.type + ' ', 'COMMON_PARTS', + 'points="', points.join(''), + '" />\n' + ]; + }, + /* _TO_SVG_END_ */ + + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + commonRender: function(ctx) { + var point, len = this.points.length, + x = this.pathOffset.x, + y = this.pathOffset.y; + + if (!len || isNaN(this.points[len - 1].y)) { + // do not draw if no points or odd points + // NaN comes from parseFloat of a empty string in parser + return false; + } + ctx.beginPath(); + ctx.moveTo(this.points[0].x - x, this.points[0].y - y); + for (var i = 0; i < len; i++) { + point = this.points[i]; + ctx.lineTo(point.x - x, point.y - y); + } + return true; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function(ctx) { + if (!this.commonRender(ctx)) { + return; + } + this._renderPaintInOrder(ctx); + }, + + /** + * Returns complexity of an instance + * @return {Number} complexity of this instance + */ + complexity: function() { + return this.get('points').length; + } + }); + + /* _FROM_SVG_START_ */ + /** + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Polyline.fromElement}) + * @static + * @memberOf fabric.Polyline + * @see: http://www.w3.org/TR/SVG/shapes.html#PolylineElement + */ + fabric.Polyline.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(); + + /** + * Returns fabric.Polyline instance from an SVG element + * @static + * @memberOf fabric.Polyline + * @param {SVGElement} element Element to parser + * @param {Function} callback callback function invoked after parsing + * @param {Object} [options] Options object + */ + fabric.Polyline.fromElementGenerator = function(_class) { + return function(element, callback, options) { + if (!element) { + return callback(null); + } + options || (options = { }); + + var points = fabric.parsePointsAttribute(element.getAttribute('points')), + parsedAttributes = fabric.parseAttributes(element, fabric[_class].ATTRIBUTE_NAMES); + parsedAttributes.fromSVG = true; + callback(new fabric[_class](points, extend(parsedAttributes, options))); + }; + }; + + fabric.Polyline.fromElement = fabric.Polyline.fromElementGenerator('Polyline'); + + /* _FROM_SVG_END_ */ + + /** + * Returns fabric.Polyline instance from an object representation + * @static + * @memberOf fabric.Polyline + * @param {Object} object Object to create an instance from + * @param {Function} [callback] Callback to invoke when an fabric.Path instance is created + */ + fabric.Polyline.fromObject = function(object, callback) { + return fabric.Object._fromObject('Polyline', object, callback, 'points'); + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = {}), + projectStrokeOnPoints = fabric.util.projectStrokeOnPoints; + + if (fabric.Polygon) { + fabric.warn('fabric.Polygon is already defined'); + return; + } + + /** + * Polygon class + * @class fabric.Polygon + * @extends fabric.Polyline + * @see {@link fabric.Polygon#initialize} for constructor definition + */ + fabric.Polygon = fabric.util.createClass(fabric.Polyline, /** @lends fabric.Polygon.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'polygon', + + /** + * @private + */ + _projectStrokeOnPoints: function () { + return projectStrokeOnPoints(this.points, this); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function(ctx) { + if (!this.commonRender(ctx)) { + return; + } + ctx.closePath(); + this._renderPaintInOrder(ctx); + }, + + }); + + /* _FROM_SVG_START_ */ + /** + * List of attribute names to account for when parsing SVG element (used by `fabric.Polygon.fromElement`) + * @static + * @memberOf fabric.Polygon + * @see: http://www.w3.org/TR/SVG/shapes.html#PolygonElement + */ + fabric.Polygon.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(); + + /** + * Returns {@link fabric.Polygon} instance from an SVG element + * @static + * @memberOf fabric.Polygon + * @param {SVGElement} element Element to parse + * @param {Function} callback callback function invoked after parsing + * @param {Object} [options] Options object + */ + fabric.Polygon.fromElement = fabric.Polyline.fromElementGenerator('Polygon'); + /* _FROM_SVG_END_ */ + + /** + * Returns fabric.Polygon instance from an object representation + * @static + * @memberOf fabric.Polygon + * @param {Object} object Object to create an instance from + * @param {Function} [callback] Callback to invoke when an fabric.Path instance is created + * @return {void} + */ + fabric.Polygon.fromObject = function(object, callback) { + fabric.Object._fromObject('Polygon', object, callback, 'points'); + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + min = fabric.util.array.min, + max = fabric.util.array.max, + extend = fabric.util.object.extend, + clone = fabric.util.object.clone, + _toString = Object.prototype.toString, + toFixed = fabric.util.toFixed; + + if (fabric.Path) { + fabric.warn('fabric.Path is already defined'); + return; + } + + /** + * Path class + * @class fabric.Path + * @extends fabric.Object + * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#path_and_pathgroup} + * @see {@link fabric.Path#initialize} for constructor definition + */ + fabric.Path = fabric.util.createClass(fabric.Object, /** @lends fabric.Path.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'path', + + /** + * Array of path points + * @type Array + * @default + */ + path: null, + + cacheProperties: fabric.Object.prototype.cacheProperties.concat('path', 'fillRule'), + + stateProperties: fabric.Object.prototype.stateProperties.concat('path'), + + /** + * Constructor + * @param {Array|String} path Path data (sequence of coordinates and corresponding "command" tokens) + * @param {Object} [options] Options object + * @return {fabric.Path} thisArg + */ + initialize: function (path, options) { + options = clone(options || {}); + delete options.path; + this.callSuper('initialize', options); + this._setPath(path || [], options); + }, + + /** + * @private + * @param {Array|String} path Path data (sequence of coordinates and corresponding "command" tokens) + * @param {Object} [options] Options object + */ + _setPath: function (path, options) { + var fromArray = _toString.call(path) === '[object Array]'; + + this.path = fabric.util.makePathSimpler( + fromArray ? path : fabric.util.parsePath(path) + ); + + fabric.Polyline.prototype._setPositionDimensions.call(this, options || {}); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx context to render path on + */ + _renderPathCommands: function(ctx) { + var current, // current instruction + subpathStartX = 0, + subpathStartY = 0, + x = 0, // current x + y = 0, // current y + controlX = 0, // current control point x + controlY = 0, // current control point y + l = -this.pathOffset.x, + t = -this.pathOffset.y; + + ctx.beginPath(); + + for (var i = 0, len = this.path.length; i < len; ++i) { + + current = this.path[i]; + + switch (current[0]) { // first letter + + case 'L': // lineto, absolute + x = current[1]; + y = current[2]; + ctx.lineTo(x + l, y + t); + break; + + case 'M': // moveTo, absolute + x = current[1]; + y = current[2]; + subpathStartX = x; + subpathStartY = y; + ctx.moveTo(x + l, y + t); + break; + + case 'C': // bezierCurveTo, absolute + x = current[5]; + y = current[6]; + controlX = current[3]; + controlY = current[4]; + ctx.bezierCurveTo( + current[1] + l, + current[2] + t, + controlX + l, + controlY + t, + x + l, + y + t + ); + break; + + case 'Q': // quadraticCurveTo, absolute + ctx.quadraticCurveTo( + current[1] + l, + current[2] + t, + current[3] + l, + current[4] + t + ); + x = current[3]; + y = current[4]; + controlX = current[1]; + controlY = current[2]; + break; + + case 'z': + case 'Z': + x = subpathStartX; + y = subpathStartY; + ctx.closePath(); + break; + } + } + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx context to render path on + */ + _render: function(ctx) { + this._renderPathCommands(ctx); + this._renderPaintInOrder(ctx); + }, + + /** + * Returns string representation of an instance + * @return {String} string representation of an instance + */ + toString: function() { + return '#'; + }, + + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function(propertiesToInclude) { + return extend(this.callSuper('toObject', propertiesToInclude), { + path: this.path.map(function(item) { return item.slice(); }), + }); + }, + + /** + * Returns dataless object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toDatalessObject: function(propertiesToInclude) { + var o = this.toObject(['sourcePath'].concat(propertiesToInclude)); + if (o.sourcePath) { + delete o.path; + } + return o; + }, + + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function() { + var path = fabric.util.joinPath(this.path); + return [ + '\n' + ]; + }, + + _getOffsetTransform: function() { + var digits = fabric.Object.NUM_FRACTION_DIGITS; + return ' translate(' + toFixed(-this.pathOffset.x, digits) + ', ' + + toFixed(-this.pathOffset.y, digits) + ')'; + }, + + /** + * Returns svg clipPath representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toClipPathSVG: function(reviver) { + var additionalTransform = this._getOffsetTransform(); + return '\t' + this._createBaseClipPathSVGMarkup( + this._toSVG(), { reviver: reviver, additionalTransform: additionalTransform } + ); + }, + + /** + * Returns svg representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toSVG: function(reviver) { + var additionalTransform = this._getOffsetTransform(); + return this._createBaseSVGMarkup(this._toSVG(), { reviver: reviver, additionalTransform: additionalTransform }); + }, + /* _TO_SVG_END_ */ + + /** + * Returns number representation of an instance complexity + * @return {Number} complexity of this instance + */ + complexity: function() { + return this.path.length; + }, + + /** + * @private + */ + _calcDimensions: function() { + + var aX = [], + aY = [], + current, // current instruction + subpathStartX = 0, + subpathStartY = 0, + x = 0, // current x + y = 0, // current y + bounds; + + for (var i = 0, len = this.path.length; i < len; ++i) { + + current = this.path[i]; + + switch (current[0]) { // first letter + + case 'L': // lineto, absolute + x = current[1]; + y = current[2]; + bounds = []; + break; + + case 'M': // moveTo, absolute + x = current[1]; + y = current[2]; + subpathStartX = x; + subpathStartY = y; + bounds = []; + break; + + case 'C': // bezierCurveTo, absolute + bounds = fabric.util.getBoundsOfCurve(x, y, + current[1], + current[2], + current[3], + current[4], + current[5], + current[6] + ); + x = current[5]; + y = current[6]; + break; + + case 'Q': // quadraticCurveTo, absolute + bounds = fabric.util.getBoundsOfCurve(x, y, + current[1], + current[2], + current[1], + current[2], + current[3], + current[4] + ); + x = current[3]; + y = current[4]; + break; + + case 'z': + case 'Z': + x = subpathStartX; + y = subpathStartY; + break; + } + bounds.forEach(function (point) { + aX.push(point.x); + aY.push(point.y); + }); + aX.push(x); + aY.push(y); + } + + var minX = min(aX) || 0, + minY = min(aY) || 0, + maxX = max(aX) || 0, + maxY = max(aY) || 0, + deltaX = maxX - minX, + deltaY = maxY - minY; + + return { + left: minX, + top: minY, + width: deltaX, + height: deltaY + }; + } + }); + + /** + * Creates an instance of fabric.Path from an object + * @static + * @memberOf fabric.Path + * @param {Object} object + * @param {Function} [callback] Callback to invoke when an fabric.Path instance is created + */ + fabric.Path.fromObject = function(object, callback) { + if (typeof object.sourcePath === 'string') { + var pathUrl = object.sourcePath; + fabric.loadSVGFromURL(pathUrl, function (elements) { + var path = elements[0]; + path.setOptions(object); + callback && callback(path); + }); + } + else { + fabric.Object._fromObject('Path', object, callback, 'path'); + } + }; + + /* _FROM_SVG_START_ */ + /** + * List of attribute names to account for when parsing SVG element (used by `fabric.Path.fromElement`) + * @static + * @memberOf fabric.Path + * @see http://www.w3.org/TR/SVG/paths.html#PathElement + */ + fabric.Path.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(['d']); + + /** + * Creates an instance of fabric.Path from an SVG element + * @static + * @memberOf fabric.Path + * @param {SVGElement} element to parse + * @param {Function} callback Callback to invoke when an fabric.Path instance is created + * @param {Object} [options] Options object + * @param {Function} [callback] Options callback invoked after parsing is finished + */ + fabric.Path.fromElement = function(element, callback, options) { + var parsedAttributes = fabric.parseAttributes(element, fabric.Path.ATTRIBUTE_NAMES); + parsedAttributes.fromSVG = true; + callback(new fabric.Path(parsedAttributes.d, extend(parsedAttributes, options))); + }; + /* _FROM_SVG_END_ */ + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + min = fabric.util.array.min, + max = fabric.util.array.max; + + if (fabric.Group) { + return; + } + + /** + * Group class + * @class fabric.Group + * @extends fabric.Object + * @mixes fabric.Collection + * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#groups} + * @see {@link fabric.Group#initialize} for constructor definition + */ + fabric.Group = fabric.util.createClass(fabric.Object, fabric.Collection, /** @lends fabric.Group.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'group', + + /** + * Width of stroke + * @type Number + * @default + */ + strokeWidth: 0, + + /** + * Indicates if click, mouseover, mouseout events & hoverCursor should also check for subtargets + * @type Boolean + * @default + */ + subTargetCheck: false, + + /** + * Groups are container, do not render anything on theyr own, ence no cache properties + * @type Array + * @default + */ + cacheProperties: [], + + /** + * setOnGroup is a method used for TextBox that is no more used since 2.0.0 The behavior is still + * available setting this boolean to true. + * @type Boolean + * @since 2.0.0 + * @default + */ + useSetOnGroup: false, + + /** + * Constructor + * @param {Object} objects Group objects + * @param {Object} [options] Options object + * @param {Boolean} [isAlreadyGrouped] if true, objects have been grouped already. + * @return {Object} thisArg + */ + initialize: function(objects, options, isAlreadyGrouped) { + options = options || {}; + this._objects = []; + // if objects enclosed in a group have been grouped already, + // we cannot change properties of objects. + // Thus we need to set options to group without objects, + isAlreadyGrouped && this.callSuper('initialize', options); + this._objects = objects || []; + for (var i = this._objects.length; i--; ) { + this._objects[i].group = this; + } + + if (!isAlreadyGrouped) { + var center = options && options.centerPoint; + // we want to set origins before calculating the bounding box. + // so that the topleft can be set with that in mind. + // if specific top and left are passed, are overwritten later + // with the callSuper('initialize', options) + if (options.originX !== undefined) { + this.originX = options.originX; + } + if (options.originY !== undefined) { + this.originY = options.originY; + } + // if coming from svg i do not want to calc bounds. + // i assume width and height are passed along options + center || this._calcBounds(); + this._updateObjectsCoords(center); + delete options.centerPoint; + this.callSuper('initialize', options); + } + else { + this._updateObjectsACoords(); + } + + this.setCoords(); + }, + + /** + * @private + */ + _updateObjectsACoords: function() { + var skipControls = true; + for (var i = this._objects.length; i--; ){ + this._objects[i].setCoords(skipControls); + } + }, + + /** + * @private + * @param {Boolean} [skipCoordsChange] if true, coordinates of objects enclosed in a group do not change + */ + _updateObjectsCoords: function(center) { + var center = center || this.getCenterPoint(); + for (var i = this._objects.length; i--; ){ + this._updateObjectCoords(this._objects[i], center); + } + }, + + /** + * @private + * @param {Object} object + * @param {fabric.Point} center, current center of group. + */ + _updateObjectCoords: function(object, center) { + var objectLeft = object.left, + objectTop = object.top, + skipControls = true; + + object.set({ + left: objectLeft - center.x, + top: objectTop - center.y + }); + object.group = this; + object.setCoords(skipControls); + }, + + /** + * Returns string represenation of a group + * @return {String} + */ + toString: function() { + return '#'; + }, + + /** + * Adds an object to a group; Then recalculates group's dimension, position. + * @param {Object} object + * @return {fabric.Group} thisArg + * @chainable + */ + addWithUpdate: function(object) { + var nested = !!this.group; + this._restoreObjectsState(); + fabric.util.resetObjectTransform(this); + if (object) { + if (nested) { + // if this group is inside another group, we need to pre transform the object + fabric.util.removeTransformFromObject(object, this.group.calcTransformMatrix()); + } + this._objects.push(object); + object.group = this; + object._set('canvas', this.canvas); + } + this._calcBounds(); + this._updateObjectsCoords(); + this.dirty = true; + if (nested) { + this.group.addWithUpdate(); + } + else { + this.setCoords(); + } + return this; + }, + + /** + * Removes an object from a group; Then recalculates group's dimension, position. + * @param {Object} object + * @return {fabric.Group} thisArg + * @chainable + */ + removeWithUpdate: function(object) { + this._restoreObjectsState(); + fabric.util.resetObjectTransform(this); + + this.remove(object); + this._calcBounds(); + this._updateObjectsCoords(); + this.setCoords(); + this.dirty = true; + return this; + }, + + /** + * @private + */ + _onObjectAdded: function(object) { + this.dirty = true; + object.group = this; + object._set('canvas', this.canvas); + }, + + /** + * @private + */ + _onObjectRemoved: function(object) { + this.dirty = true; + delete object.group; + }, + + /** + * @private + */ + _set: function(key, value) { + var i = this._objects.length; + if (this.useSetOnGroup) { + while (i--) { + this._objects[i].setOnGroup(key, value); + } + } + if (key === 'canvas') { + while (i--) { + this._objects[i]._set(key, value); + } + } + fabric.Object.prototype._set.call(this, key, value); + }, + + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toObject: function(propertiesToInclude) { + var _includeDefaultValues = this.includeDefaultValues; + var objsToObject = this._objects + .filter(function (obj) { + return !obj.excludeFromExport; + }) + .map(function (obj) { + var originalDefaults = obj.includeDefaultValues; + obj.includeDefaultValues = _includeDefaultValues; + var _obj = obj.toObject(propertiesToInclude); + obj.includeDefaultValues = originalDefaults; + return _obj; + }); + var obj = fabric.Object.prototype.toObject.call(this, propertiesToInclude); + obj.objects = objsToObject; + return obj; + }, + + /** + * Returns object representation of an instance, in dataless mode. + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance + */ + toDatalessObject: function(propertiesToInclude) { + var objsToObject, sourcePath = this.sourcePath; + if (sourcePath) { + objsToObject = sourcePath; + } + else { + var _includeDefaultValues = this.includeDefaultValues; + objsToObject = this._objects.map(function(obj) { + var originalDefaults = obj.includeDefaultValues; + obj.includeDefaultValues = _includeDefaultValues; + var _obj = obj.toDatalessObject(propertiesToInclude); + obj.includeDefaultValues = originalDefaults; + return _obj; + }); + } + var obj = fabric.Object.prototype.toDatalessObject.call(this, propertiesToInclude); + obj.objects = objsToObject; + return obj; + }, + + /** + * Renders instance on a given context + * @param {CanvasRenderingContext2D} ctx context to render instance on + */ + render: function(ctx) { + this._transformDone = true; + this.callSuper('render', ctx); + this._transformDone = false; + }, + + /** + * Decide if the object should cache or not. Create its own cache level + * needsItsOwnCache should be used when the object drawing method requires + * a cache step. None of the fabric classes requires it. + * Generally you do not cache objects in groups because the group is already cached. + * @return {Boolean} + */ + shouldCache: function() { + var ownCache = fabric.Object.prototype.shouldCache.call(this); + if (ownCache) { + for (var i = 0, len = this._objects.length; i < len; i++) { + if (this._objects[i].willDrawShadow()) { + this.ownCaching = false; + return false; + } + } + } + return ownCache; + }, + + /** + * Check if this object or a child object will cast a shadow + * @return {Boolean} + */ + willDrawShadow: function() { + if (fabric.Object.prototype.willDrawShadow.call(this)) { + return true; + } + for (var i = 0, len = this._objects.length; i < len; i++) { + if (this._objects[i].willDrawShadow()) { + return true; + } + } + return false; + }, + + /** + * Check if this group or its parent group are caching, recursively up + * @return {Boolean} + */ + isOnACache: function() { + return this.ownCaching || (this.group && this.group.isOnACache()); + }, + + /** + * Execute the drawing operation for an object on a specified context + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawObject: function(ctx) { + for (var i = 0, len = this._objects.length; i < len; i++) { + this._objects[i].render(ctx); + } + this._drawClipPath(ctx, this.clipPath); + }, + + /** + * Check if cache is dirty + */ + isCacheDirty: function(skipCanvas) { + if (this.callSuper('isCacheDirty', skipCanvas)) { + return true; + } + if (!this.statefullCache) { + return false; + } + for (var i = 0, len = this._objects.length; i < len; i++) { + if (this._objects[i].isCacheDirty(true)) { + if (this._cacheCanvas) { + // if this group has not a cache canvas there is nothing to clean + var x = this.cacheWidth / this.zoomX, y = this.cacheHeight / this.zoomY; + this._cacheContext.clearRect(-x / 2, -y / 2, x, y); + } + return true; + } + } + return false; + }, + + /** + * Restores original state of each of group objects (original state is that which was before group was created). + * if the nested boolean is true, the original state will be restored just for the + * first group and not for all the group chain + * @private + * @param {Boolean} nested tell the function to restore object state up to the parent group and not more + * @return {fabric.Group} thisArg + * @chainable + */ + _restoreObjectsState: function() { + var groupMatrix = this.calcOwnMatrix(); + this._objects.forEach(function(object) { + // instead of using _this = this; + fabric.util.addTransformToObject(object, groupMatrix); + delete object.group; + object.setCoords(); + }); + return this; + }, + + /** + * Destroys a group (restoring state of its objects) + * @return {fabric.Group} thisArg + * @chainable + */ + destroy: function() { + // when group is destroyed objects needs to get a repaint to be eventually + // displayed on canvas. + this._objects.forEach(function(object) { + object.set('dirty', true); + }); + return this._restoreObjectsState(); + }, + + dispose: function () { + this.callSuper('dispose'); + this.forEachObject(function (object) { + object.dispose && object.dispose(); + }); + this._objects = []; + }, + + /** + * make a group an active selection, remove the group from canvas + * the group has to be on canvas for this to work. + * @return {fabric.ActiveSelection} thisArg + * @chainable + */ + toActiveSelection: function() { + if (!this.canvas) { + return; + } + var objects = this._objects, canvas = this.canvas; + this._objects = []; + var options = this.toObject(); + delete options.objects; + var activeSelection = new fabric.ActiveSelection([]); + activeSelection.set(options); + activeSelection.type = 'activeSelection'; + canvas.remove(this); + objects.forEach(function(object) { + object.group = activeSelection; + object.dirty = true; + canvas.add(object); + }); + activeSelection.canvas = canvas; + activeSelection._objects = objects; + canvas._activeObject = activeSelection; + activeSelection.setCoords(); + return activeSelection; + }, + + /** + * Destroys a group (restoring state of its objects) + * @return {fabric.Group} thisArg + * @chainable + */ + ungroupOnCanvas: function() { + return this._restoreObjectsState(); + }, + + /** + * Sets coordinates of all objects inside group + * @return {fabric.Group} thisArg + * @chainable + */ + setObjectsCoords: function() { + var skipControls = true; + this.forEachObject(function(object) { + object.setCoords(skipControls); + }); + return this; + }, + + /** + * @private + */ + _calcBounds: function(onlyWidthHeight) { + var aX = [], + aY = [], + o, prop, coords, + props = ['tr', 'br', 'bl', 'tl'], + i = 0, iLen = this._objects.length, + j, jLen = props.length; + + for ( ; i < iLen; ++i) { + o = this._objects[i]; + coords = o.calcACoords(); + for (j = 0; j < jLen; j++) { + prop = props[j]; + aX.push(coords[prop].x); + aY.push(coords[prop].y); + } + o.aCoords = coords; + } + + this._getBounds(aX, aY, onlyWidthHeight); + }, + + /** + * @private + */ + _getBounds: function(aX, aY, onlyWidthHeight) { + var minXY = new fabric.Point(min(aX), min(aY)), + maxXY = new fabric.Point(max(aX), max(aY)), + top = minXY.y || 0, left = minXY.x || 0, + width = (maxXY.x - minXY.x) || 0, + height = (maxXY.y - minXY.y) || 0; + this.width = width; + this.height = height; + if (!onlyWidthHeight) { + // the bounding box always finds the topleft most corner. + // whatever is the group origin, we set up here the left/top position. + this.setPositionByOrigin({ x: left, y: top }, 'left', 'top'); + } + }, + + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + _toSVG: function(reviver) { + var svgString = ['\n']; + + for (var i = 0, len = this._objects.length; i < len; i++) { + svgString.push('\t\t', this._objects[i].toSVG(reviver)); + } + svgString.push('\n'); + return svgString; + }, + + /** + * Returns styles-string for svg-export, specific version for group + * @return {String} + */ + getSvgStyles: function() { + var opacity = typeof this.opacity !== 'undefined' && this.opacity !== 1 ? + 'opacity: ' + this.opacity + ';' : '', + visibility = this.visible ? '' : ' visibility: hidden;'; + return [ + opacity, + this.getSvgFilter(), + visibility + ].join(''); + }, + + /** + * Returns svg clipPath representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toClipPathSVG: function(reviver) { + var svgString = []; + + for (var i = 0, len = this._objects.length; i < len; i++) { + svgString.push('\t', this._objects[i].toClipPathSVG(reviver)); + } + + return this._createBaseClipPathSVGMarkup(svgString, { reviver: reviver }); + }, + /* _TO_SVG_END_ */ + }); + + /** + * Returns {@link fabric.Group} instance from an object representation + * @static + * @memberOf fabric.Group + * @param {Object} object Object to create a group from + * @param {Function} [callback] Callback to invoke when an group instance is created + */ + fabric.Group.fromObject = function(object, callback) { + var objects = object.objects, + options = fabric.util.object.clone(object, true); + delete options.objects; + if (typeof objects === 'string') { + // it has to be an url or something went wrong. + fabric.loadSVGFromURL(objects, function (elements) { + var group = fabric.util.groupSVGElements(elements, object, objects); + group.set(options); + callback && callback(group); + }); + return; + } + fabric.util.enlivenObjects(objects, function (enlivenedObjects) { + var options = fabric.util.object.clone(object, true); + delete options.objects; + fabric.util.enlivenObjectEnlivables(object, options, function () { + callback && callback(new fabric.Group(enlivenedObjects, options, true)); + }); + }); + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }); + + if (fabric.ActiveSelection) { + return; + } + + /** + * Group class + * @class fabric.ActiveSelection + * @extends fabric.Group + * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#groups} + * @see {@link fabric.ActiveSelection#initialize} for constructor definition + */ + fabric.ActiveSelection = fabric.util.createClass(fabric.Group, /** @lends fabric.ActiveSelection.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'activeSelection', + + /** + * Constructor + * @param {Object} objects ActiveSelection objects + * @param {Object} [options] Options object + * @return {Object} thisArg + */ + initialize: function(objects, options) { + options = options || {}; + this._objects = objects || []; + for (var i = this._objects.length; i--; ) { + this._objects[i].group = this; + } + + if (options.originX) { + this.originX = options.originX; + } + if (options.originY) { + this.originY = options.originY; + } + this._calcBounds(); + this._updateObjectsCoords(); + fabric.Object.prototype.initialize.call(this, options); + this.setCoords(); + }, + + /** + * Change te activeSelection to a normal group, + * High level function that automatically adds it to canvas as + * active object. no events fired. + * @since 2.0.0 + * @return {fabric.Group} + */ + toGroup: function() { + var objects = this._objects.concat(); + this._objects = []; + var options = fabric.Object.prototype.toObject.call(this); + var newGroup = new fabric.Group([]); + delete options.type; + newGroup.set(options); + objects.forEach(function(object) { + object.canvas.remove(object); + object.group = newGroup; + }); + newGroup._objects = objects; + if (!this.canvas) { + return newGroup; + } + var canvas = this.canvas; + canvas.add(newGroup); + canvas._activeObject = newGroup; + newGroup.setCoords(); + return newGroup; + }, + + /** + * If returns true, deselection is cancelled. + * @since 2.0.0 + * @return {Boolean} [cancel] + */ + onDeselect: function() { + this.destroy(); + return false; + }, + + /** + * Returns string representation of a group + * @return {String} + */ + toString: function() { + return '#'; + }, + + /** + * Decide if the object should cache or not. Create its own cache level + * objectCaching is a global flag, wins over everything + * needsItsOwnCache should be used when the object drawing method requires + * a cache step. None of the fabric classes requires it. + * Generally you do not cache objects in groups because the group outside is cached. + * @return {Boolean} + */ + shouldCache: function() { + return false; + }, + + /** + * Check if this group or its parent group are caching, recursively up + * @return {Boolean} + */ + isOnACache: function() { + return false; + }, + + /** + * Renders controls and borders for the object + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Object} [styleOverride] properties to override the object style + * @param {Object} [childrenOverride] properties to override the children overrides + */ + _renderControls: function(ctx, styleOverride, childrenOverride) { + ctx.save(); + ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1; + this.callSuper('_renderControls', ctx, styleOverride); + childrenOverride = childrenOverride || { }; + if (typeof childrenOverride.hasControls === 'undefined') { + childrenOverride.hasControls = false; + } + childrenOverride.forActiveSelection = true; + for (var i = 0, len = this._objects.length; i < len; i++) { + this._objects[i]._renderControls(ctx, childrenOverride); + } + ctx.restore(); + }, + }); + + /** + * Returns {@link fabric.ActiveSelection} instance from an object representation + * @static + * @memberOf fabric.ActiveSelection + * @param {Object} object Object to create a group from + * @param {Function} [callback] Callback to invoke when an ActiveSelection instance is created + */ + fabric.ActiveSelection.fromObject = function(object, callback) { + fabric.util.enlivenObjects(object.objects, function(enlivenedObjects) { + delete object.objects; + callback && callback(new fabric.ActiveSelection(enlivenedObjects, object, true)); + }); + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var extend = fabric.util.object.extend; + + if (!global.fabric) { + global.fabric = { }; + } + + if (global.fabric.Image) { + fabric.warn('fabric.Image is already defined.'); + return; + } + + /** + * Image class + * @class fabric.Image + * @extends fabric.Object + * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#images} + * @see {@link fabric.Image#initialize} for constructor definition + */ + fabric.Image = fabric.util.createClass(fabric.Object, /** @lends fabric.Image.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'image', + + /** + * Width of a stroke. + * For image quality a stroke multiple of 2 gives better results. + * @type Number + * @default + */ + strokeWidth: 0, + + /** + * When calling {@link fabric.Image.getSrc}, return value from element src with `element.getAttribute('src')`. + * This allows for relative urls as image src. + * @since 2.7.0 + * @type Boolean + * @default + */ + srcFromAttribute: false, + + /** + * private + * contains last value of scaleX to detect + * if the Image got resized after the last Render + * @type Number + */ + _lastScaleX: 1, + + /** + * private + * contains last value of scaleY to detect + * if the Image got resized after the last Render + * @type Number + */ + _lastScaleY: 1, + + /** + * private + * contains last value of scaling applied by the apply filter chain + * @type Number + */ + _filterScalingX: 1, + + /** + * private + * contains last value of scaling applied by the apply filter chain + * @type Number + */ + _filterScalingY: 1, + + /** + * minimum scale factor under which any resizeFilter is triggered to resize the image + * 0 will disable the automatic resize. 1 will trigger automatically always. + * number bigger than 1 are not implemented yet. + * @type Number + */ + minimumScaleTrigger: 0.5, + + /** + * List of properties to consider when checking if + * state of an object is changed ({@link fabric.Object#hasStateChanged}) + * as well as for history (undo/redo) purposes + * @type Array + */ + stateProperties: fabric.Object.prototype.stateProperties.concat('cropX', 'cropY'), + + /** + * List of properties to consider when checking if cache needs refresh + * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single + * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty + * and refreshed at the next render + * @type Array + */ + cacheProperties: fabric.Object.prototype.cacheProperties.concat('cropX', 'cropY'), + + /** + * key used to retrieve the texture representing this image + * @since 2.0.0 + * @type String + * @default + */ + cacheKey: '', + + /** + * Image crop in pixels from original image size. + * @since 2.0.0 + * @type Number + * @default + */ + cropX: 0, + + /** + * Image crop in pixels from original image size. + * @since 2.0.0 + * @type Number + * @default + */ + cropY: 0, + + /** + * Indicates whether this canvas will use image smoothing when painting this image. + * Also influence if the cacheCanvas for this image uses imageSmoothing + * @since 4.0.0-beta.11 + * @type Boolean + * @default + */ + imageSmoothing: true, + + /** + * Constructor + * Image can be initialized with any canvas drawable or a string. + * The string should be a url and will be loaded as an image. + * Canvas and Image element work out of the box, while videos require extra code to work. + * Please check video element events for seeking. + * @param {HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | String} element Image element + * @param {Object} [options] Options object + * @param {function} [callback] callback function to call after eventual filters applied. + * @return {fabric.Image} thisArg + */ + initialize: function(element, options) { + options || (options = { }); + this.filters = []; + this.cacheKey = 'texture' + fabric.Object.__uid++; + this.callSuper('initialize', options); + this._initElement(element, options); + }, + + /** + * Returns image element which this instance if based on + * @return {HTMLImageElement} Image element + */ + getElement: function() { + return this._element || {}; + }, + + /** + * Sets image element for this instance to a specified one. + * If filters defined they are applied to new image. + * You might need to call `canvas.renderAll` and `object.setCoords` after replacing, to render new image and update controls area. + * @param {HTMLImageElement} element + * @param {Object} [options] Options object + * @return {fabric.Image} thisArg + * @chainable + */ + setElement: function(element, options) { + this.removeTexture(this.cacheKey); + this.removeTexture(this.cacheKey + '_filtered'); + this._element = element; + this._originalElement = element; + this._initConfig(options); + if (this.filters.length !== 0) { + this.applyFilters(); + } + // resizeFilters work on the already filtered copy. + // we need to apply resizeFilters AFTER normal filters. + // applyResizeFilters is run more often than normal filters + // and is triggered by user interactions rather than dev code + if (this.resizeFilter) { + this.applyResizeFilters(); + } + return this; + }, + + /** + * Delete a single texture if in webgl mode + */ + removeTexture: function(key) { + var backend = fabric.filterBackend; + if (backend && backend.evictCachesForKey) { + backend.evictCachesForKey(key); + } + }, + + /** + * Delete textures, reference to elements and eventually JSDOM cleanup + */ + dispose: function () { + this.callSuper('dispose'); + this.removeTexture(this.cacheKey); + this.removeTexture(this.cacheKey + '_filtered'); + this._cacheContext = undefined; + ['_originalElement', '_element', '_filteredEl', '_cacheCanvas'].forEach((function(element) { + fabric.util.cleanUpJsdomNode(this[element]); + this[element] = undefined; + }).bind(this)); + }, + + /** + * Get the crossOrigin value (of the corresponding image element) + */ + getCrossOrigin: function() { + return this._originalElement && (this._originalElement.crossOrigin || null); + }, + + /** + * Returns original size of an image + * @return {Object} Object with "width" and "height" properties + */ + getOriginalSize: function() { + var element = this.getElement(); + return { + width: element.naturalWidth || element.width, + height: element.naturalHeight || element.height + }; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _stroke: function(ctx) { + if (!this.stroke || this.strokeWidth === 0) { + return; + } + var w = this.width / 2, h = this.height / 2; + ctx.beginPath(); + ctx.moveTo(-w, -h); + ctx.lineTo(w, -h); + ctx.lineTo(w, h); + ctx.lineTo(-w, h); + ctx.lineTo(-w, -h); + ctx.closePath(); + }, + + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toObject: function(propertiesToInclude) { + var filters = []; + + this.filters.forEach(function(filterObj) { + if (filterObj) { + filters.push(filterObj.toObject()); + } + }); + var object = extend( + this.callSuper( + 'toObject', + ['cropX', 'cropY'].concat(propertiesToInclude) + ), { + src: this.getSrc(), + crossOrigin: this.getCrossOrigin(), + filters: filters, + }); + if (this.resizeFilter) { + object.resizeFilter = this.resizeFilter.toObject(); + } + return object; + }, + + /** + * Returns true if an image has crop applied, inspecting values of cropX,cropY,width,height. + * @return {Boolean} + */ + hasCrop: function() { + return this.cropX || this.cropY || this.width < this._element.width || this.height < this._element.height; + }, + + /* _TO_SVG_START_ */ + /** + * Returns svg representation of an instance + * @return {Array} an array of strings with the specific svg representation + * of the instance + */ + _toSVG: function() { + var svgString = [], imageMarkup = [], strokeSvg, element = this._element, + x = -this.width / 2, y = -this.height / 2, clipPath = '', imageRendering = ''; + if (!element) { + return []; + } + if (this.hasCrop()) { + var clipPathId = fabric.Object.__uid++; + svgString.push( + '\n', + '\t\n', + '\n' + ); + clipPath = ' clip-path="url(#imageCrop_' + clipPathId + ')" '; + } + if (!this.imageSmoothing) { + imageRendering = '" image-rendering="optimizeSpeed'; + } + imageMarkup.push('\t\n'); + + if (this.stroke || this.strokeDashArray) { + var origFill = this.fill; + this.fill = null; + strokeSvg = [ + '\t\n' + ]; + this.fill = origFill; + } + if (this.paintFirst !== 'fill') { + svgString = svgString.concat(strokeSvg, imageMarkup); + } + else { + svgString = svgString.concat(imageMarkup, strokeSvg); + } + return svgString; + }, + /* _TO_SVG_END_ */ + + /** + * Returns source of an image + * @param {Boolean} filtered indicates if the src is needed for svg + * @return {String} Source of an image + */ + getSrc: function(filtered) { + var element = filtered ? this._element : this._originalElement; + if (element) { + if (element.toDataURL) { + return element.toDataURL(); + } + + if (this.srcFromAttribute) { + return element.getAttribute('src'); + } + else { + return element.src; + } + } + else { + return this.src || ''; + } + }, + + /** + * Sets source of an image + * @param {String} src Source string (URL) + * @param {Function} [callback] Callback is invoked when image has been loaded (and all filters have been applied) + * @param {Object} [options] Options object + * @param {String} [options.crossOrigin] crossOrigin value (one of "", "anonymous", "use-credentials") + * @see https://developer.mozilla.org/en-US/docs/HTML/CORS_settings_attributes + * @return {fabric.Image} thisArg + * @chainable + */ + setSrc: function(src, callback, options) { + fabric.util.loadImage(src, function(img, isError) { + this.setElement(img, options); + this._setWidthHeight(); + callback && callback(this, isError); + }, this, options && options.crossOrigin); + return this; + }, + + /** + * Returns string representation of an instance + * @return {String} String representation of an instance + */ + toString: function() { + return '#'; + }, + + applyResizeFilters: function() { + var filter = this.resizeFilter, + minimumScale = this.minimumScaleTrigger, + objectScale = this.getTotalObjectScaling(), + scaleX = objectScale.scaleX, + scaleY = objectScale.scaleY, + elementToFilter = this._filteredEl || this._originalElement; + if (this.group) { + this.set('dirty', true); + } + if (!filter || (scaleX > minimumScale && scaleY > minimumScale)) { + this._element = elementToFilter; + this._filterScalingX = 1; + this._filterScalingY = 1; + this._lastScaleX = scaleX; + this._lastScaleY = scaleY; + return; + } + if (!fabric.filterBackend) { + fabric.filterBackend = fabric.initFilterBackend(); + } + var canvasEl = fabric.util.createCanvasElement(), + cacheKey = this._filteredEl ? (this.cacheKey + '_filtered') : this.cacheKey, + sourceWidth = elementToFilter.width, sourceHeight = elementToFilter.height; + canvasEl.width = sourceWidth; + canvasEl.height = sourceHeight; + this._element = canvasEl; + this._lastScaleX = filter.scaleX = scaleX; + this._lastScaleY = filter.scaleY = scaleY; + fabric.filterBackend.applyFilters( + [filter], elementToFilter, sourceWidth, sourceHeight, this._element, cacheKey); + this._filterScalingX = canvasEl.width / this._originalElement.width; + this._filterScalingY = canvasEl.height / this._originalElement.height; + }, + + /** + * Applies filters assigned to this image (from "filters" array) or from filter param + * @method applyFilters + * @param {Array} filters to be applied + * @param {Boolean} forResizing specify if the filter operation is a resize operation + * @return {thisArg} return the fabric.Image object + * @chainable + */ + applyFilters: function(filters) { + + filters = filters || this.filters || []; + filters = filters.filter(function(filter) { return filter && !filter.isNeutralState(); }); + this.set('dirty', true); + + // needs to clear out or WEBGL will not resize correctly + this.removeTexture(this.cacheKey + '_filtered'); + + if (filters.length === 0) { + this._element = this._originalElement; + this._filteredEl = null; + this._filterScalingX = 1; + this._filterScalingY = 1; + return this; + } + + var imgElement = this._originalElement, + sourceWidth = imgElement.naturalWidth || imgElement.width, + sourceHeight = imgElement.naturalHeight || imgElement.height; + + if (this._element === this._originalElement) { + // if the element is the same we need to create a new element + var canvasEl = fabric.util.createCanvasElement(); + canvasEl.width = sourceWidth; + canvasEl.height = sourceHeight; + this._element = canvasEl; + this._filteredEl = canvasEl; + } + else { + // clear the existing element to get new filter data + // also dereference the eventual resized _element + this._element = this._filteredEl; + this._filteredEl.getContext('2d').clearRect(0, 0, sourceWidth, sourceHeight); + // we also need to resize again at next renderAll, so remove saved _lastScaleX/Y + this._lastScaleX = 1; + this._lastScaleY = 1; + } + if (!fabric.filterBackend) { + fabric.filterBackend = fabric.initFilterBackend(); + } + fabric.filterBackend.applyFilters( + filters, this._originalElement, sourceWidth, sourceHeight, this._element, this.cacheKey); + if (this._originalElement.width !== this._element.width || + this._originalElement.height !== this._element.height) { + this._filterScalingX = this._element.width / this._originalElement.width; + this._filterScalingY = this._element.height / this._originalElement.height; + } + return this; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function(ctx) { + fabric.util.setImageSmoothing(ctx, this.imageSmoothing); + if (this.isMoving !== true && this.resizeFilter && this._needsResize()) { + this.applyResizeFilters(); + } + this._stroke(ctx); + this._renderPaintInOrder(ctx); + }, + + /** + * Paint the cached copy of the object on the target context. + * it will set the imageSmoothing for the draw operation + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + drawCacheOnCanvas: function(ctx) { + fabric.util.setImageSmoothing(ctx, this.imageSmoothing); + fabric.Object.prototype.drawCacheOnCanvas.call(this, ctx); + }, + + /** + * Decide if the object should cache or not. Create its own cache level + * needsItsOwnCache should be used when the object drawing method requires + * a cache step. None of the fabric classes requires it. + * Generally you do not cache objects in groups because the group outside is cached. + * This is the special image version where we would like to avoid caching where possible. + * Essentially images do not benefit from caching. They may require caching, and in that + * case we do it. Also caching an image usually ends in a loss of details. + * A full performance audit should be done. + * @return {Boolean} + */ + shouldCache: function() { + return this.needsItsOwnCache(); + }, + + _renderFill: function(ctx) { + var elementToDraw = this._element; + if (!elementToDraw) { + return; + } + var scaleX = this._filterScalingX, scaleY = this._filterScalingY, + w = this.width, h = this.height, min = Math.min, max = Math.max, + // crop values cannot be lesser than 0. + cropX = max(this.cropX, 0), cropY = max(this.cropY, 0), + elWidth = elementToDraw.naturalWidth || elementToDraw.width, + elHeight = elementToDraw.naturalHeight || elementToDraw.height, + sX = cropX * scaleX, + sY = cropY * scaleY, + // the width height cannot exceed element width/height, starting from the crop offset. + sW = min(w * scaleX, elWidth - sX), + sH = min(h * scaleY, elHeight - sY), + x = -w / 2, y = -h / 2, + maxDestW = min(w, elWidth / scaleX - cropX), + maxDestH = min(h, elHeight / scaleY - cropY); + + elementToDraw && ctx.drawImage(elementToDraw, sX, sY, sW, sH, x, y, maxDestW, maxDestH); + }, + + /** + * needed to check if image needs resize + * @private + */ + _needsResize: function() { + var scale = this.getTotalObjectScaling(); + return (scale.scaleX !== this._lastScaleX || scale.scaleY !== this._lastScaleY); + }, + + /** + * @private + */ + _resetWidthHeight: function() { + this.set(this.getOriginalSize()); + }, + + /** + * The Image class's initialization method. This method is automatically + * called by the constructor. + * @private + * @param {HTMLImageElement|String} element The element representing the image + * @param {Object} [options] Options object + */ + _initElement: function(element, options) { + this.setElement(fabric.util.getById(element), options); + fabric.util.addClass(this.getElement(), fabric.Image.CSS_CANVAS); + }, + + /** + * @private + * @param {Object} [options] Options object + */ + _initConfig: function(options) { + options || (options = { }); + this.setOptions(options); + this._setWidthHeight(options); + }, + + /** + * @private + * @param {Array} filters to be initialized + * @param {Function} callback Callback to invoke when all fabric.Image.filters instances are created + */ + _initFilters: function(filters, callback) { + if (filters && filters.length) { + fabric.util.enlivenObjects(filters, function(enlivenedObjects) { + callback && callback(enlivenedObjects); + }, 'fabric.Image.filters'); + } + else { + callback && callback(); + } + }, + + /** + * @private + * Set the width and the height of the image object, using the element or the + * options. + * @param {Object} [options] Object with width/height properties + */ + _setWidthHeight: function(options) { + options || (options = { }); + var el = this.getElement(); + this.width = options.width || el.naturalWidth || el.width || 0; + this.height = options.height || el.naturalHeight || el.height || 0; + }, + + /** + * Calculate offset for center and scale factor for the image in order to respect + * the preserveAspectRatio attribute + * @private + * @return {Object} + */ + parsePreserveAspectRatioAttribute: function() { + var pAR = fabric.util.parsePreserveAspectRatioAttribute(this.preserveAspectRatio || ''), + rWidth = this._element.width, rHeight = this._element.height, + scaleX = 1, scaleY = 1, offsetLeft = 0, offsetTop = 0, cropX = 0, cropY = 0, + offset, pWidth = this.width, pHeight = this.height, parsedAttributes = { width: pWidth, height: pHeight }; + if (pAR && (pAR.alignX !== 'none' || pAR.alignY !== 'none')) { + if (pAR.meetOrSlice === 'meet') { + scaleX = scaleY = fabric.util.findScaleToFit(this._element, parsedAttributes); + offset = (pWidth - rWidth * scaleX) / 2; + if (pAR.alignX === 'Min') { + offsetLeft = -offset; + } + if (pAR.alignX === 'Max') { + offsetLeft = offset; + } + offset = (pHeight - rHeight * scaleY) / 2; + if (pAR.alignY === 'Min') { + offsetTop = -offset; + } + if (pAR.alignY === 'Max') { + offsetTop = offset; + } + } + if (pAR.meetOrSlice === 'slice') { + scaleX = scaleY = fabric.util.findScaleToCover(this._element, parsedAttributes); + offset = rWidth - pWidth / scaleX; + if (pAR.alignX === 'Mid') { + cropX = offset / 2; + } + if (pAR.alignX === 'Max') { + cropX = offset; + } + offset = rHeight - pHeight / scaleY; + if (pAR.alignY === 'Mid') { + cropY = offset / 2; + } + if (pAR.alignY === 'Max') { + cropY = offset; + } + rWidth = pWidth / scaleX; + rHeight = pHeight / scaleY; + } + } + else { + scaleX = pWidth / rWidth; + scaleY = pHeight / rHeight; + } + return { + width: rWidth, + height: rHeight, + scaleX: scaleX, + scaleY: scaleY, + offsetLeft: offsetLeft, + offsetTop: offsetTop, + cropX: cropX, + cropY: cropY + }; + } + }); + + /** + * Default CSS class name for canvas + * @static + * @type String + * @default + */ + fabric.Image.CSS_CANVAS = 'canvas-img'; + + /** + * Alias for getSrc + * @static + */ + fabric.Image.prototype.getSvgSrc = fabric.Image.prototype.getSrc; + + /** + * Creates an instance of fabric.Image from its object representation + * @static + * @param {Object} object Object to create an instance from + * @param {Function} callback Callback to invoke when an image instance is created + */ + fabric.Image.fromObject = function(_object, callback) { + var object = fabric.util.object.clone(_object); + fabric.util.loadImage(object.src, function(img, isError) { + if (isError) { + callback && callback(null, true); + return; + } + fabric.Image.prototype._initFilters.call(object, object.filters, function(filters) { + object.filters = filters || []; + fabric.Image.prototype._initFilters.call(object, [object.resizeFilter], function(resizeFilters) { + object.resizeFilter = resizeFilters[0]; + fabric.util.enlivenObjectEnlivables(object, object, function () { + var image = new fabric.Image(img, object); + callback(image, false); + }); + }); + }); + }, null, object.crossOrigin); + }; + + /** + * Creates an instance of fabric.Image from an URL string + * @static + * @param {String} url URL to create an image from + * @param {Function} [callback] Callback to invoke when image is created (newly created image is passed as a first argument). Second argument is a boolean indicating if an error occurred or not. + * @param {Object} [imgOptions] Options object + */ + fabric.Image.fromURL = function(url, callback, imgOptions) { + fabric.util.loadImage(url, function(img, isError) { + callback && callback(new fabric.Image(img, imgOptions), isError); + }, null, imgOptions && imgOptions.crossOrigin); + }; + + /* _FROM_SVG_START_ */ + /** + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Image.fromElement}) + * @static + * @see {@link http://www.w3.org/TR/SVG/struct.html#ImageElement} + */ + fabric.Image.ATTRIBUTE_NAMES = + fabric.SHARED_ATTRIBUTES.concat( + 'x y width height preserveAspectRatio xlink:href crossOrigin image-rendering'.split(' ') + ); + + /** + * Returns {@link fabric.Image} instance from an SVG element + * @static + * @param {SVGElement} element Element to parse + * @param {Object} [options] Options object + * @param {Function} callback Callback to execute when fabric.Image object is created + * @return {fabric.Image} Instance of fabric.Image + */ + fabric.Image.fromElement = function(element, callback, options) { + var parsedAttributes = fabric.parseAttributes(element, fabric.Image.ATTRIBUTE_NAMES); + fabric.Image.fromURL(parsedAttributes['xlink:href'], callback, + extend((options ? fabric.util.object.clone(options) : { }), parsedAttributes)); + }; + /* _FROM_SVG_END_ */ + +})(typeof exports !== 'undefined' ? exports : this); + + +fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ { + + /** + * @private + * @return {Number} angle value + */ + _getAngleValueForStraighten: function() { + var angle = this.angle % 360; + if (angle > 0) { + return Math.round((angle - 1) / 90) * 90; + } + return Math.round(angle / 90) * 90; + }, + + /** + * Straightens an object (rotating it from current angle to one of 0, 90, 180, 270, etc. depending on which is closer) + * @return {fabric.Object} thisArg + * @chainable + */ + straighten: function() { + return this.rotate(this._getAngleValueForStraighten()); + }, + + /** + * Same as {@link fabric.Object.prototype.straighten} but with animation + * @param {Object} callbacks Object with callback functions + * @param {Function} [callbacks.onComplete] Invoked on completion + * @param {Function} [callbacks.onChange] Invoked on every step of animation + * @return {fabric.Object} thisArg + */ + fxStraighten: function(callbacks) { + callbacks = callbacks || { }; + + var empty = function() { }, + onComplete = callbacks.onComplete || empty, + onChange = callbacks.onChange || empty, + _this = this; + + return fabric.util.animate({ + target: this, + startValue: this.get('angle'), + endValue: this._getAngleValueForStraighten(), + duration: this.FX_DURATION, + onChange: function(value) { + _this.rotate(value); + onChange(); + }, + onComplete: function() { + _this.setCoords(); + onComplete(); + }, + }); + } +}); + +fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ { + + /** + * Straightens object, then rerenders canvas + * @param {fabric.Object} object Object to straighten + * @return {fabric.Canvas} thisArg + * @chainable + */ + straightenObject: function (object) { + object.straighten(); + this.requestRenderAll(); + return this; + }, + + /** + * Same as {@link fabric.Canvas.prototype.straightenObject}, but animated + * @param {fabric.Object} object Object to straighten + * @return {fabric.Canvas} thisArg + */ + fxStraightenObject: function (object) { + return object.fxStraighten({ + onChange: this.requestRenderAllBound + }); + } +}); + + +(function() { + + 'use strict'; + + /** + * Tests if webgl supports certain precision + * @param {WebGL} Canvas WebGL context to test on + * @param {String} Precision to test can be any of following: 'lowp', 'mediump', 'highp' + * @returns {Boolean} Whether the user's browser WebGL supports given precision. + */ + function testPrecision(gl, precision){ + var fragmentSource = 'precision ' + precision + ' float;\nvoid main(){}'; + var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER); + gl.shaderSource(fragmentShader, fragmentSource); + gl.compileShader(fragmentShader); + if (!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS)) { + return false; + } + return true; + } + + /** + * Indicate whether this filtering backend is supported by the user's browser. + * @param {Number} tileSize check if the tileSize is supported + * @returns {Boolean} Whether the user's browser supports WebGL. + */ + fabric.isWebglSupported = function(tileSize) { + if (fabric.isLikelyNode) { + return false; + } + tileSize = tileSize || fabric.WebglFilterBackend.prototype.tileSize; + var canvas = document.createElement('canvas'); + var gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl'); + var isSupported = false; + // eslint-disable-next-line + if (gl) { + fabric.maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE); + isSupported = fabric.maxTextureSize >= tileSize; + var precisions = ['highp', 'mediump', 'lowp']; + for (var i = 0; i < 3; i++){ + if (testPrecision(gl, precisions[i])){ + fabric.webGlPrecision = precisions[i]; + break; + }; + } + } + this.isSupported = isSupported; + return isSupported; + }; + + fabric.WebglFilterBackend = WebglFilterBackend; + + /** + * WebGL filter backend. + */ + function WebglFilterBackend(options) { + if (options && options.tileSize) { + this.tileSize = options.tileSize; + } + this.setupGLContext(this.tileSize, this.tileSize); + this.captureGPUInfo(); + }; + + WebglFilterBackend.prototype = /** @lends fabric.WebglFilterBackend.prototype */ { + + tileSize: 2048, + + /** + * Experimental. This object is a sort of repository of help layers used to avoid + * of recreating them during frequent filtering. If you are previewing a filter with + * a slider you probably do not want to create help layers every filter step. + * in this object there will be appended some canvases, created once, resized sometimes + * cleared never. Clearing is left to the developer. + **/ + resources: { + + }, + + /** + * Setup a WebGL context suitable for filtering, and bind any needed event handlers. + */ + setupGLContext: function(width, height) { + this.dispose(); + this.createWebGLCanvas(width, height); + // eslint-disable-next-line + this.aPosition = new Float32Array([0, 0, 0, 1, 1, 0, 1, 1]); + this.chooseFastestCopyGLTo2DMethod(width, height); + }, + + /** + * Pick a method to copy data from GL context to 2d canvas. In some browsers using + * putImageData is faster than drawImage for that specific operation. + */ + chooseFastestCopyGLTo2DMethod: function(width, height) { + var canMeasurePerf = typeof window.performance !== 'undefined', canUseImageData; + try { + new ImageData(1, 1); + canUseImageData = true; + } + catch (e) { + canUseImageData = false; + } + // eslint-disable-next-line no-undef + var canUseArrayBuffer = typeof ArrayBuffer !== 'undefined'; + // eslint-disable-next-line no-undef + var canUseUint8Clamped = typeof Uint8ClampedArray !== 'undefined'; + + if (!(canMeasurePerf && canUseImageData && canUseArrayBuffer && canUseUint8Clamped)) { + return; + } + + var targetCanvas = fabric.util.createCanvasElement(); + // eslint-disable-next-line no-undef + var imageBuffer = new ArrayBuffer(width * height * 4); + if (fabric.forceGLPutImageData) { + this.imageBuffer = imageBuffer; + this.copyGLTo2D = copyGLTo2DPutImageData; + return; + } + var testContext = { + imageBuffer: imageBuffer, + destinationWidth: width, + destinationHeight: height, + targetCanvas: targetCanvas + }; + var startTime, drawImageTime, putImageDataTime; + targetCanvas.width = width; + targetCanvas.height = height; + + startTime = window.performance.now(); + copyGLTo2DDrawImage.call(testContext, this.gl, testContext); + drawImageTime = window.performance.now() - startTime; + + startTime = window.performance.now(); + copyGLTo2DPutImageData.call(testContext, this.gl, testContext); + putImageDataTime = window.performance.now() - startTime; + + if (drawImageTime > putImageDataTime) { + this.imageBuffer = imageBuffer; + this.copyGLTo2D = copyGLTo2DPutImageData; + } + else { + this.copyGLTo2D = copyGLTo2DDrawImage; + } + }, + + /** + * Create a canvas element and associated WebGL context and attaches them as + * class properties to the GLFilterBackend class. + */ + createWebGLCanvas: function(width, height) { + var canvas = fabric.util.createCanvasElement(); + canvas.width = width; + canvas.height = height; + var glOptions = { + alpha: true, + premultipliedAlpha: false, + depth: false, + stencil: false, + antialias: false + }, + gl = canvas.getContext('webgl', glOptions); + if (!gl) { + gl = canvas.getContext('experimental-webgl', glOptions); + } + if (!gl) { + return; + } + gl.clearColor(0, 0, 0, 0); + // this canvas can fire webglcontextlost and webglcontextrestored + this.canvas = canvas; + this.gl = gl; + }, + + /** + * Attempts to apply the requested filters to the source provided, drawing the filtered output + * to the provided target canvas. + * + * @param {Array} filters The filters to apply. + * @param {HTMLImageElement|HTMLCanvasElement} source The source to be filtered. + * @param {Number} width The width of the source input. + * @param {Number} height The height of the source input. + * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn. + * @param {String|undefined} cacheKey A key used to cache resources related to the source. If + * omitted, caching will be skipped. + */ + applyFilters: function(filters, source, width, height, targetCanvas, cacheKey) { + var gl = this.gl; + var cachedTexture; + if (cacheKey) { + cachedTexture = this.getCachedTexture(cacheKey, source); + } + var pipelineState = { + originalWidth: source.width || source.originalWidth, + originalHeight: source.height || source.originalHeight, + sourceWidth: width, + sourceHeight: height, + destinationWidth: width, + destinationHeight: height, + context: gl, + sourceTexture: this.createTexture(gl, width, height, !cachedTexture && source), + targetTexture: this.createTexture(gl, width, height), + originalTexture: cachedTexture || + this.createTexture(gl, width, height, !cachedTexture && source), + passes: filters.length, + webgl: true, + aPosition: this.aPosition, + programCache: this.programCache, + pass: 0, + filterBackend: this, + targetCanvas: targetCanvas + }; + var tempFbo = gl.createFramebuffer(); + gl.bindFramebuffer(gl.FRAMEBUFFER, tempFbo); + filters.forEach(function(filter) { filter && filter.applyTo(pipelineState); }); + resizeCanvasIfNeeded(pipelineState); + this.copyGLTo2D(gl, pipelineState); + gl.bindTexture(gl.TEXTURE_2D, null); + gl.deleteTexture(pipelineState.sourceTexture); + gl.deleteTexture(pipelineState.targetTexture); + gl.deleteFramebuffer(tempFbo); + targetCanvas.getContext('2d').setTransform(1, 0, 0, 1, 0, 0); + return pipelineState; + }, + + /** + * Detach event listeners, remove references, and clean up caches. + */ + dispose: function() { + if (this.canvas) { + this.canvas = null; + this.gl = null; + } + this.clearWebGLCaches(); + }, + + /** + * Wipe out WebGL-related caches. + */ + clearWebGLCaches: function() { + this.programCache = {}; + this.textureCache = {}; + }, + + /** + * Create a WebGL texture object. + * + * Accepts specific dimensions to initialize the texture to or a source image. + * + * @param {WebGLRenderingContext} gl The GL context to use for creating the texture. + * @param {Number} width The width to initialize the texture at. + * @param {Number} height The height to initialize the texture. + * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source for the texture data. + * @returns {WebGLTexture} + */ + createTexture: function(gl, width, height, textureImageSource) { + var texture = gl.createTexture(); + gl.bindTexture(gl.TEXTURE_2D, texture); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); + if (textureImageSource) { + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, textureImageSource); + } + else { + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); + } + return texture; + }, + + /** + * Can be optionally used to get a texture from the cache array + * + * If an existing texture is not found, a new texture is created and cached. + * + * @param {String} uniqueId A cache key to use to find an existing texture. + * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source to use to create the + * texture cache entry if one does not already exist. + */ + getCachedTexture: function(uniqueId, textureImageSource) { + if (this.textureCache[uniqueId]) { + return this.textureCache[uniqueId]; + } + else { + var texture = this.createTexture( + this.gl, textureImageSource.width, textureImageSource.height, textureImageSource); + this.textureCache[uniqueId] = texture; + return texture; + } + }, + + /** + * Clear out cached resources related to a source image that has been + * filtered previously. + * + * @param {String} cacheKey The cache key provided when the source image was filtered. + */ + evictCachesForKey: function(cacheKey) { + if (this.textureCache[cacheKey]) { + this.gl.deleteTexture(this.textureCache[cacheKey]); + delete this.textureCache[cacheKey]; + } + }, + + copyGLTo2D: copyGLTo2DDrawImage, + + /** + * Attempt to extract GPU information strings from a WebGL context. + * + * Useful information when debugging or blacklisting specific GPUs. + * + * @returns {Object} A GPU info object with renderer and vendor strings. + */ + captureGPUInfo: function() { + if (this.gpuInfo) { + return this.gpuInfo; + } + var gl = this.gl, gpuInfo = { renderer: '', vendor: '' }; + if (!gl) { + return gpuInfo; + } + var ext = gl.getExtension('WEBGL_debug_renderer_info'); + if (ext) { + var renderer = gl.getParameter(ext.UNMASKED_RENDERER_WEBGL); + var vendor = gl.getParameter(ext.UNMASKED_VENDOR_WEBGL); + if (renderer) { + gpuInfo.renderer = renderer.toLowerCase(); + } + if (vendor) { + gpuInfo.vendor = vendor.toLowerCase(); + } + } + this.gpuInfo = gpuInfo; + return gpuInfo; + }, + }; +})(); + +function resizeCanvasIfNeeded(pipelineState) { + var targetCanvas = pipelineState.targetCanvas, + width = targetCanvas.width, height = targetCanvas.height, + dWidth = pipelineState.destinationWidth, + dHeight = pipelineState.destinationHeight; + + if (width !== dWidth || height !== dHeight) { + targetCanvas.width = dWidth; + targetCanvas.height = dHeight; + } +} + +/** + * Copy an input WebGL canvas on to an output 2D canvas. + * + * The WebGL canvas is assumed to be upside down, with the top-left pixel of the + * desired output image appearing in the bottom-left corner of the WebGL canvas. + * + * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from. + * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to. + * @param {Object} pipelineState The 2D target canvas to copy on to. + */ +function copyGLTo2DDrawImage(gl, pipelineState) { + var glCanvas = gl.canvas, targetCanvas = pipelineState.targetCanvas, + ctx = targetCanvas.getContext('2d'); + ctx.translate(0, targetCanvas.height); // move it down again + ctx.scale(1, -1); // vertical flip + // where is my image on the big glcanvas? + var sourceY = glCanvas.height - targetCanvas.height; + ctx.drawImage(glCanvas, 0, sourceY, targetCanvas.width, targetCanvas.height, 0, 0, + targetCanvas.width, targetCanvas.height); +} + +/** + * Copy an input WebGL canvas on to an output 2D canvas using 2d canvas' putImageData + * API. Measurably faster than using ctx.drawImage in Firefox (version 54 on OSX Sierra). + * + * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from. + * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to. + * @param {Object} pipelineState The 2D target canvas to copy on to. + */ +function copyGLTo2DPutImageData(gl, pipelineState) { + var targetCanvas = pipelineState.targetCanvas, ctx = targetCanvas.getContext('2d'), + dWidth = pipelineState.destinationWidth, + dHeight = pipelineState.destinationHeight, + numBytes = dWidth * dHeight * 4; + + // eslint-disable-next-line no-undef + var u8 = new Uint8Array(this.imageBuffer, 0, numBytes); + // eslint-disable-next-line no-undef + var u8Clamped = new Uint8ClampedArray(this.imageBuffer, 0, numBytes); + + gl.readPixels(0, 0, dWidth, dHeight, gl.RGBA, gl.UNSIGNED_BYTE, u8); + var imgData = new ImageData(u8Clamped, dWidth, dHeight); + ctx.putImageData(imgData, 0, 0); +} + + +(function() { + + 'use strict'; + + var noop = function() {}; + + fabric.Canvas2dFilterBackend = Canvas2dFilterBackend; + + /** + * Canvas 2D filter backend. + */ + function Canvas2dFilterBackend() {}; + + Canvas2dFilterBackend.prototype = /** @lends fabric.Canvas2dFilterBackend.prototype */ { + evictCachesForKey: noop, + dispose: noop, + clearWebGLCaches: noop, + + /** + * Experimental. This object is a sort of repository of help layers used to avoid + * of recreating them during frequent filtering. If you are previewing a filter with + * a slider you probably do not want to create help layers every filter step. + * in this object there will be appended some canvases, created once, resized sometimes + * cleared never. Clearing is left to the developer. + **/ + resources: { + + }, + + /** + * Apply a set of filters against a source image and draw the filtered output + * to the provided destination canvas. + * + * @param {EnhancedFilter} filters The filter to apply. + * @param {HTMLImageElement|HTMLCanvasElement} sourceElement The source to be filtered. + * @param {Number} sourceWidth The width of the source input. + * @param {Number} sourceHeight The height of the source input. + * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn. + */ + applyFilters: function(filters, sourceElement, sourceWidth, sourceHeight, targetCanvas) { + var ctx = targetCanvas.getContext('2d'); + ctx.drawImage(sourceElement, 0, 0, sourceWidth, sourceHeight); + var imageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight); + var originalImageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight); + var pipelineState = { + sourceWidth: sourceWidth, + sourceHeight: sourceHeight, + imageData: imageData, + originalEl: sourceElement, + originalImageData: originalImageData, + canvasEl: targetCanvas, + ctx: ctx, + filterBackend: this, + }; + filters.forEach(function(filter) { filter.applyTo(pipelineState); }); + if (pipelineState.imageData.width !== sourceWidth || pipelineState.imageData.height !== sourceHeight) { + targetCanvas.width = pipelineState.imageData.width; + targetCanvas.height = pipelineState.imageData.height; + } + ctx.putImageData(pipelineState.imageData, 0, 0); + return pipelineState; + }, + + }; +})(); + + +/** + * @namespace fabric.Image.filters + * @memberOf fabric.Image + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#image_filters} + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + */ +fabric.Image = fabric.Image || { }; +fabric.Image.filters = fabric.Image.filters || { }; + +/** + * Root filter class from which all filter classes inherit from + * @class fabric.Image.filters.BaseFilter + * @memberOf fabric.Image.filters + */ +fabric.Image.filters.BaseFilter = fabric.util.createClass(/** @lends fabric.Image.filters.BaseFilter.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'BaseFilter', + + /** + * Array of attributes to send with buffers. do not modify + * @private + */ + + vertexSource: 'attribute vec2 aPosition;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vTexCoord = aPosition;\n' + + 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\n' + + '}', + + fragmentSource: 'precision highp float;\n' + + 'varying vec2 vTexCoord;\n' + + 'uniform sampler2D uTexture;\n' + + 'void main() {\n' + + 'gl_FragColor = texture2D(uTexture, vTexCoord);\n' + + '}', + + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function(options) { + if (options) { + this.setOptions(options); + } + }, + + /** + * Sets filter's properties from options + * @param {Object} [options] Options object + */ + setOptions: function(options) { + for (var prop in options) { + this[prop] = options[prop]; + } + }, + + /** + * Compile this filter's shader program. + * + * @param {WebGLRenderingContext} gl The GL canvas context to use for shader compilation. + * @param {String} fragmentSource fragmentShader source for compilation + * @param {String} vertexSource vertexShader source for compilation + */ + createProgram: function(gl, fragmentSource, vertexSource) { + fragmentSource = fragmentSource || this.fragmentSource; + vertexSource = vertexSource || this.vertexSource; + if (fabric.webGlPrecision !== 'highp'){ + fragmentSource = fragmentSource.replace( + /precision highp float/g, + 'precision ' + fabric.webGlPrecision + ' float' + ); + } + var vertexShader = gl.createShader(gl.VERTEX_SHADER); + gl.shaderSource(vertexShader, vertexSource); + gl.compileShader(vertexShader); + if (!gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS)) { + throw new Error( + // eslint-disable-next-line prefer-template + 'Vertex shader compile error for ' + this.type + ': ' + + gl.getShaderInfoLog(vertexShader) + ); + } + + var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER); + gl.shaderSource(fragmentShader, fragmentSource); + gl.compileShader(fragmentShader); + if (!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS)) { + throw new Error( + // eslint-disable-next-line prefer-template + 'Fragment shader compile error for ' + this.type + ': ' + + gl.getShaderInfoLog(fragmentShader) + ); + } + + var program = gl.createProgram(); + gl.attachShader(program, vertexShader); + gl.attachShader(program, fragmentShader); + gl.linkProgram(program); + if (!gl.getProgramParameter(program, gl.LINK_STATUS)) { + throw new Error( + // eslint-disable-next-line prefer-template + 'Shader link error for "${this.type}" ' + + gl.getProgramInfoLog(program) + ); + } + + var attributeLocations = this.getAttributeLocations(gl, program); + var uniformLocations = this.getUniformLocations(gl, program) || { }; + uniformLocations.uStepW = gl.getUniformLocation(program, 'uStepW'); + uniformLocations.uStepH = gl.getUniformLocation(program, 'uStepH'); + return { + program: program, + attributeLocations: attributeLocations, + uniformLocations: uniformLocations + }; + }, + + /** + * Return a map of attribute names to WebGLAttributeLocation objects. + * + * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. + * @param {WebGLShaderProgram} program The shader program from which to take attribute locations. + * @returns {Object} A map of attribute names to attribute locations. + */ + getAttributeLocations: function(gl, program) { + return { + aPosition: gl.getAttribLocation(program, 'aPosition'), + }; + }, + + /** + * Return a map of uniform names to WebGLUniformLocation objects. + * + * Intended to be overridden by subclasses. + * + * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. + * @param {WebGLShaderProgram} program The shader program from which to take uniform locations. + * @returns {Object} A map of uniform names to uniform locations. + */ + getUniformLocations: function (/* gl, program */) { + // in case i do not need any special uniform i need to return an empty object + return { }; + }, + + /** + * Send attribute data from this filter to its shader program on the GPU. + * + * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. + * @param {Object} attributeLocations A map of shader attribute names to their locations. + */ + sendAttributeData: function(gl, attributeLocations, aPositionData) { + var attributeLocation = attributeLocations.aPosition; + var buffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, buffer); + gl.enableVertexAttribArray(attributeLocation); + gl.vertexAttribPointer(attributeLocation, 2, gl.FLOAT, false, 0, 0); + gl.bufferData(gl.ARRAY_BUFFER, aPositionData, gl.STATIC_DRAW); + }, + + _setupFrameBuffer: function(options) { + var gl = options.context, width, height; + if (options.passes > 1) { + width = options.destinationWidth; + height = options.destinationHeight; + if (options.sourceWidth !== width || options.sourceHeight !== height) { + gl.deleteTexture(options.targetTexture); + options.targetTexture = options.filterBackend.createTexture(gl, width, height); + } + gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, + options.targetTexture, 0); + } + else { + // draw last filter on canvas and not to framebuffer. + gl.bindFramebuffer(gl.FRAMEBUFFER, null); + gl.finish(); + } + }, + + _swapTextures: function(options) { + options.passes--; + options.pass++; + var temp = options.targetTexture; + options.targetTexture = options.sourceTexture; + options.sourceTexture = temp; + }, + + /** + * Generic isNeutral implementation for one parameter based filters. + * Used only in image applyFilters to discard filters that will not have an effect + * on the image + * Other filters may need their own version ( ColorMatrix, HueRotation, gamma, ComposedFilter ) + * @param {Object} options + **/ + isNeutralState: function(/* options */) { + var main = this.mainParameter, + _class = fabric.Image.filters[this.type].prototype; + if (main) { + if (Array.isArray(_class[main])) { + for (var i = _class[main].length; i--;) { + if (this[main][i] !== _class[main][i]) { + return false; + } + } + return true; + } + else { + return _class[main] === this[main]; + } + } + else { + return false; + } + }, + + /** + * Apply this filter to the input image data provided. + * + * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be executed + * @param {Boolean} options.webgl Whether to use webgl to render the filter. + * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. + * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + applyTo: function(options) { + if (options.webgl) { + this._setupFrameBuffer(options); + this.applyToWebGL(options); + this._swapTextures(options); + } + else { + this.applyTo2d(options); + } + }, + + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function(options) { + if (!options.programCache.hasOwnProperty(this.type)) { + options.programCache[this.type] = this.createProgram(options.context); + } + return options.programCache[this.type]; + }, + + /** + * Apply this filter using webgl. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be executed + * @param {Boolean} options.webgl Whether to use webgl to render the filter. + * @param {WebGLTexture} options.originalTexture The texture of the original input image. + * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. + * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + applyToWebGL: function(options) { + var gl = options.context; + var shader = this.retrieveShader(options); + if (options.pass === 0 && options.originalTexture) { + gl.bindTexture(gl.TEXTURE_2D, options.originalTexture); + } + else { + gl.bindTexture(gl.TEXTURE_2D, options.sourceTexture); + } + gl.useProgram(shader.program); + this.sendAttributeData(gl, shader.attributeLocations, options.aPosition); + + gl.uniform1f(shader.uniformLocations.uStepW, 1 / options.sourceWidth); + gl.uniform1f(shader.uniformLocations.uStepH, 1 / options.sourceHeight); + + this.sendUniformData(gl, shader.uniformLocations); + gl.viewport(0, 0, options.destinationWidth, options.destinationHeight); + gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4); + }, + + bindAdditionalTexture: function(gl, texture, textureUnit) { + gl.activeTexture(textureUnit); + gl.bindTexture(gl.TEXTURE_2D, texture); + // reset active texture to 0 as usual + gl.activeTexture(gl.TEXTURE0); + }, + + unbindAdditionalTexture: function(gl, textureUnit) { + gl.activeTexture(textureUnit); + gl.bindTexture(gl.TEXTURE_2D, null); + gl.activeTexture(gl.TEXTURE0); + }, + + getMainParameter: function() { + return this[this.mainParameter]; + }, + + setMainParameter: function(value) { + this[this.mainParameter] = value; + }, + + /** + * Send uniform data from this filter to its shader program on the GPU. + * + * Intended to be overridden by subclasses. + * + * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program. + * @param {Object} uniformLocations A map of shader uniform names to their locations. + */ + sendUniformData: function(/* gl, uniformLocations */) { + // Intentionally left blank. Override me in subclasses. + }, + + /** + * If needed by a 2d filter, this functions can create an helper canvas to be used + * remember that options.targetCanvas is available for use till end of chain. + */ + createHelpLayer: function(options) { + if (!options.helpLayer) { + var helpLayer = document.createElement('canvas'); + helpLayer.width = options.sourceWidth; + helpLayer.height = options.sourceHeight; + options.helpLayer = helpLayer; + } + }, + + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function() { + var object = { type: this.type }, mainP = this.mainParameter; + if (mainP) { + object[mainP] = this[mainP]; + } + return object; + }, + + /** + * Returns a JSON representation of an instance + * @return {Object} JSON + */ + toJSON: function() { + // delegate, not alias + return this.toObject(); + } +}); + +fabric.Image.filters.BaseFilter.fromObject = function(object, callback) { + var filter = new fabric.Image.filters[object.type](object); + callback && callback(filter); + return filter; +}; + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Color Matrix filter class + * @class fabric.Image.filters.ColorMatrix + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.ColorMatrix#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @see {@Link http://www.webwasp.co.uk/tutorials/219/Color_Matrix_Filter.php} + * @see {@Link http://phoboslab.org/log/2013/11/fast-image-filters-with-webgl} + * @example Kodachrome filter + * var filter = new fabric.Image.filters.ColorMatrix({ + * matrix: [ + 1.1285582396593525, -0.3967382283601348, -0.03992559172921793, 0, 63.72958762196502, + -0.16404339962244616, 1.0835251566291304, -0.05498805115633132, 0, 24.732407896706203, + -0.16786010706155763, -0.5603416277695248, 1.6014850761964943, 0, 35.62982807460946, + 0, 0, 0, 1, 0 + ] + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.ColorMatrix = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.ColorMatrix.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'ColorMatrix', + + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'varying vec2 vTexCoord;\n' + + 'uniform mat4 uColorMatrix;\n' + + 'uniform vec4 uConstants;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'color *= uColorMatrix;\n' + + 'color += uConstants;\n' + + 'gl_FragColor = color;\n' + + '}', + + /** + * Colormatrix for pixels. + * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning + * outside the -1, 1 range. + * 0.0039215686 is the part of 1 that get translated to 1 in 2d + * @param {Array} matrix array of 20 numbers. + * @default + */ + matrix: [ + 1, 0, 0, 0, 0, + 0, 1, 0, 0, 0, + 0, 0, 1, 0, 0, + 0, 0, 0, 1, 0 + ], + + mainParameter: 'matrix', + + /** + * Lock the colormatrix on the color part, skipping alpha, mainly for non webgl scenario + * to save some calculation + * @type Boolean + * @default true + */ + colorsOnly: true, + + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function(options) { + this.callSuper('initialize', options); + // create a new array instead mutating the prototype with push + this.matrix = this.matrix.slice(0); + }, + + /** + * Apply the ColorMatrix operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function(options) { + var imageData = options.imageData, + data = imageData.data, + iLen = data.length, + m = this.matrix, + r, g, b, a, i, colorsOnly = this.colorsOnly; + + for (i = 0; i < iLen; i += 4) { + r = data[i]; + g = data[i + 1]; + b = data[i + 2]; + if (colorsOnly) { + data[i] = r * m[0] + g * m[1] + b * m[2] + m[4] * 255; + data[i + 1] = r * m[5] + g * m[6] + b * m[7] + m[9] * 255; + data[i + 2] = r * m[10] + g * m[11] + b * m[12] + m[14] * 255; + } + else { + a = data[i + 3]; + data[i] = r * m[0] + g * m[1] + b * m[2] + a * m[3] + m[4] * 255; + data[i + 1] = r * m[5] + g * m[6] + b * m[7] + a * m[8] + m[9] * 255; + data[i + 2] = r * m[10] + g * m[11] + b * m[12] + a * m[13] + m[14] * 255; + data[i + 3] = r * m[15] + g * m[16] + b * m[17] + a * m[18] + m[19] * 255; + } + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uColorMatrix: gl.getUniformLocation(program, 'uColorMatrix'), + uConstants: gl.getUniformLocation(program, 'uConstants'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + var m = this.matrix, + matrix = [ + m[0], m[1], m[2], m[3], + m[5], m[6], m[7], m[8], + m[10], m[11], m[12], m[13], + m[15], m[16], m[17], m[18] + ], + constants = [m[4], m[9], m[14], m[19]]; + gl.uniformMatrix4fv(uniformLocations.uColorMatrix, false, matrix); + gl.uniform4fv(uniformLocations.uConstants, constants); + }, + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} [callback] function to invoke after filter creation + * @return {fabric.Image.filters.ColorMatrix} Instance of fabric.Image.filters.ColorMatrix + */ + fabric.Image.filters.ColorMatrix.fromObject = fabric.Image.filters.BaseFilter.fromObject; +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Brightness filter class + * @class fabric.Image.filters.Brightness + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Brightness#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Brightness({ + * brightness: 0.05 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Brightness = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Brightness.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Brightness', + + /** + * Fragment source for the brightness program + */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uBrightness;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'color.rgb += uBrightness;\n' + + 'gl_FragColor = color;\n' + + '}', + + /** + * Brightness value, from -1 to 1. + * translated to -255 to 255 for 2d + * 0.0039215686 is the part of 1 that get translated to 1 in 2d + * @param {Number} brightness + * @default + */ + brightness: 0, + + /** + * Describe the property that is the filter parameter + * @param {String} m + * @default + */ + mainParameter: 'brightness', + + /** + * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function(options) { + if (this.brightness === 0) { + return; + } + var imageData = options.imageData, + data = imageData.data, i, len = data.length, + brightness = Math.round(this.brightness * 255); + for (i = 0; i < len; i += 4) { + data[i] = data[i] + brightness; + data[i + 1] = data[i + 1] + brightness; + data[i + 2] = data[i + 2] + brightness; + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uBrightness: gl.getUniformLocation(program, 'uBrightness'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform1f(uniformLocations.uBrightness, this.brightness); + }, + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Brightness} Instance of fabric.Image.filters.Brightness + */ + fabric.Image.filters.Brightness.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + extend = fabric.util.object.extend, + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Adapted from html5rocks article + * @class fabric.Image.filters.Convolute + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Convolute#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example Sharpen filter + * var filter = new fabric.Image.filters.Convolute({ + * matrix: [ 0, -1, 0, + * -1, 5, -1, + * 0, -1, 0 ] + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + * @example Blur filter + * var filter = new fabric.Image.filters.Convolute({ + * matrix: [ 1/9, 1/9, 1/9, + * 1/9, 1/9, 1/9, + * 1/9, 1/9, 1/9 ] + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + * @example Emboss filter + * var filter = new fabric.Image.filters.Convolute({ + * matrix: [ 1, 1, 1, + * 1, 0.7, -1, + * -1, -1, -1 ] + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + * @example Emboss filter with opaqueness + * var filter = new fabric.Image.filters.Convolute({ + * opaque: true, + * matrix: [ 1, 1, 1, + * 1, 0.7, -1, + * -1, -1, -1 ] + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.Convolute = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Convolute.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Convolute', + + /* + * Opaque value (true/false) + */ + opaque: false, + + /* + * matrix for the filter, max 9x9 + */ + matrix: [0, 0, 0, 0, 1, 0, 0, 0, 0], + + /** + * Fragment source for the brightness program + */ + fragmentSource: { + Convolute_3_1: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[9];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 0);\n' + + 'for (float h = 0.0; h < 3.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 3.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 1), uStepH * (h - 1));\n' + + 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 3.0 + w)];\n' + + '}\n' + + '}\n' + + 'gl_FragColor = color;\n' + + '}', + Convolute_3_0: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[9];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 1);\n' + + 'for (float h = 0.0; h < 3.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 3.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 1.0), uStepH * (h - 1.0));\n' + + 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 3.0 + w)];\n' + + '}\n' + + '}\n' + + 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.a = alpha;\n' + + '}', + Convolute_5_1: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[25];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 0);\n' + + 'for (float h = 0.0; h < 5.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 5.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\n' + + 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 5.0 + w)];\n' + + '}\n' + + '}\n' + + 'gl_FragColor = color;\n' + + '}', + Convolute_5_0: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[25];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 1);\n' + + 'for (float h = 0.0; h < 5.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 5.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\n' + + 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 5.0 + w)];\n' + + '}\n' + + '}\n' + + 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.a = alpha;\n' + + '}', + Convolute_7_1: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[49];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 0);\n' + + 'for (float h = 0.0; h < 7.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 7.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\n' + + 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 7.0 + w)];\n' + + '}\n' + + '}\n' + + 'gl_FragColor = color;\n' + + '}', + Convolute_7_0: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[49];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 1);\n' + + 'for (float h = 0.0; h < 7.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 7.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\n' + + 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 7.0 + w)];\n' + + '}\n' + + '}\n' + + 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.a = alpha;\n' + + '}', + Convolute_9_1: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[81];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 0);\n' + + 'for (float h = 0.0; h < 9.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 9.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\n' + + 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 9.0 + w)];\n' + + '}\n' + + '}\n' + + 'gl_FragColor = color;\n' + + '}', + Convolute_9_0: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uMatrix[81];\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = vec4(0, 0, 0, 1);\n' + + 'for (float h = 0.0; h < 9.0; h+=1.0) {\n' + + 'for (float w = 0.0; w < 9.0; w+=1.0) {\n' + + 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\n' + + 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 9.0 + w)];\n' + + '}\n' + + '}\n' + + 'float alpha = texture2D(uTexture, vTexCoord).a;\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.a = alpha;\n' + + '}', + }, + + /** + * Constructor + * @memberOf fabric.Image.filters.Convolute.prototype + * @param {Object} [options] Options object + * @param {Boolean} [options.opaque=false] Opaque value (true/false) + * @param {Array} [options.matrix] Filter matrix + */ + + + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function(options) { + var size = Math.sqrt(this.matrix.length); + var cacheKey = this.type + '_' + size + '_' + (this.opaque ? 1 : 0); + var shaderSource = this.fragmentSource[cacheKey]; + if (!options.programCache.hasOwnProperty(cacheKey)) { + options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); + } + return options.programCache[cacheKey]; + }, + + /** + * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function(options) { + var imageData = options.imageData, + data = imageData.data, + weights = this.matrix, + side = Math.round(Math.sqrt(weights.length)), + halfSide = Math.floor(side / 2), + sw = imageData.width, + sh = imageData.height, + output = options.ctx.createImageData(sw, sh), + dst = output.data, + // go through the destination image pixels + alphaFac = this.opaque ? 1 : 0, + r, g, b, a, dstOff, + scx, scy, srcOff, wt, + x, y, cx, cy; + + for (y = 0; y < sh; y++) { + for (x = 0; x < sw; x++) { + dstOff = (y * sw + x) * 4; + // calculate the weighed sum of the source image pixels that + // fall under the convolution matrix + r = 0; g = 0; b = 0; a = 0; + + for (cy = 0; cy < side; cy++) { + for (cx = 0; cx < side; cx++) { + scy = y + cy - halfSide; + scx = x + cx - halfSide; + + // eslint-disable-next-line max-depth + if (scy < 0 || scy >= sh || scx < 0 || scx >= sw) { + continue; + } + + srcOff = (scy * sw + scx) * 4; + wt = weights[cy * side + cx]; + + r += data[srcOff] * wt; + g += data[srcOff + 1] * wt; + b += data[srcOff + 2] * wt; + // eslint-disable-next-line max-depth + if (!alphaFac) { + a += data[srcOff + 3] * wt; + } + } + } + dst[dstOff] = r; + dst[dstOff + 1] = g; + dst[dstOff + 2] = b; + if (!alphaFac) { + dst[dstOff + 3] = a; + } + else { + dst[dstOff + 3] = data[dstOff + 3]; + } + } + } + options.imageData = output; + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uMatrix: gl.getUniformLocation(program, 'uMatrix'), + uOpaque: gl.getUniformLocation(program, 'uOpaque'), + uHalfSize: gl.getUniformLocation(program, 'uHalfSize'), + uSize: gl.getUniformLocation(program, 'uSize'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform1fv(uniformLocations.uMatrix, this.matrix); + }, + + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function() { + return extend(this.callSuper('toObject'), { + opaque: this.opaque, + matrix: this.matrix + }); + } + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Convolute} Instance of fabric.Image.filters.Convolute + */ + fabric.Image.filters.Convolute.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Grayscale image filter class + * @class fabric.Image.filters.Grayscale + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Grayscale(); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Grayscale = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Grayscale.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Grayscale', + + fragmentSource: { + average: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'float average = (color.r + color.b + color.g) / 3.0;\n' + + 'gl_FragColor = vec4(average, average, average, color.a);\n' + + '}', + lightness: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform int uMode;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 col = texture2D(uTexture, vTexCoord);\n' + + 'float average = (max(max(col.r, col.g),col.b) + min(min(col.r, col.g),col.b)) / 2.0;\n' + + 'gl_FragColor = vec4(average, average, average, col.a);\n' + + '}', + luminosity: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform int uMode;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 col = texture2D(uTexture, vTexCoord);\n' + + 'float average = 0.21 * col.r + 0.72 * col.g + 0.07 * col.b;\n' + + 'gl_FragColor = vec4(average, average, average, col.a);\n' + + '}', + }, + + + /** + * Grayscale mode, between 'average', 'lightness', 'luminosity' + * @param {String} type + * @default + */ + mode: 'average', + + mainParameter: 'mode', + + /** + * Apply the Grayscale operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function(options) { + var imageData = options.imageData, + data = imageData.data, i, + len = data.length, value, + mode = this.mode; + for (i = 0; i < len; i += 4) { + if (mode === 'average') { + value = (data[i] + data[i + 1] + data[i + 2]) / 3; + } + else if (mode === 'lightness') { + value = (Math.min(data[i], data[i + 1], data[i + 2]) + + Math.max(data[i], data[i + 1], data[i + 2])) / 2; + } + else if (mode === 'luminosity') { + value = 0.21 * data[i] + 0.72 * data[i + 1] + 0.07 * data[i + 2]; + } + data[i] = value; + data[i + 1] = value; + data[i + 2] = value; + } + }, + + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function(options) { + var cacheKey = this.type + '_' + this.mode; + if (!options.programCache.hasOwnProperty(cacheKey)) { + var shaderSource = this.fragmentSource[this.mode]; + options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); + } + return options.programCache[cacheKey]; + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uMode: gl.getUniformLocation(program, 'uMode'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + // default average mode. + var mode = 1; + gl.uniform1i(uniformLocations.uMode, mode); + }, + + /** + * Grayscale filter isNeutralState implementation + * The filter is never neutral + * on the image + **/ + isNeutralState: function() { + return false; + }, + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Grayscale} Instance of fabric.Image.filters.Grayscale + */ + fabric.Image.filters.Grayscale.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Invert filter class + * @class fabric.Image.filters.Invert + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Invert(); + * object.filters.push(filter); + * object.applyFilters(canvas.renderAll.bind(canvas)); + */ + filters.Invert = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Invert.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Invert', + + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform int uInvert;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'if (uInvert == 1) {\n' + + 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,color.a);\n' + + '} else {\n' + + 'gl_FragColor = color;\n' + + '}\n' + + '}', + + /** + * Filter invert. if false, does nothing + * @param {Boolean} invert + * @default + */ + invert: true, + + mainParameter: 'invert', + + /** + * Apply the Invert operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function(options) { + var imageData = options.imageData, + data = imageData.data, i, + len = data.length; + for (i = 0; i < len; i += 4) { + data[i] = 255 - data[i]; + data[i + 1] = 255 - data[i + 1]; + data[i + 2] = 255 - data[i + 2]; + } + }, + + /** + * Invert filter isNeutralState implementation + * Used only in image applyFilters to discard filters that will not have an effect + * on the image + * @param {Object} options + **/ + isNeutralState: function() { + return !this.invert; + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uInvert: gl.getUniformLocation(program, 'uInvert'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform1i(uniformLocations.uInvert, this.invert); + }, + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Invert} Instance of fabric.Image.filters.Invert + */ + fabric.Image.filters.Invert.fromObject = fabric.Image.filters.BaseFilter.fromObject; + + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + extend = fabric.util.object.extend, + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Noise filter class + * @class fabric.Image.filters.Noise + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Noise#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Noise({ + * noise: 700 + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.Noise = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Noise.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Noise', + + /** + * Fragment source for the noise program + */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uStepH;\n' + + 'uniform float uNoise;\n' + + 'uniform float uSeed;\n' + + 'varying vec2 vTexCoord;\n' + + 'float rand(vec2 co, float seed, float vScale) {\n' + + 'return fract(sin(dot(co.xy * vScale ,vec2(12.9898 , 78.233))) * 43758.5453 * (seed + 0.01) / 2.0);\n' + + '}\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'color.rgb += (0.5 - rand(vTexCoord, uSeed, 0.1 / uStepH)) * uNoise;\n' + + 'gl_FragColor = color;\n' + + '}', + + /** + * Describe the property that is the filter parameter + * @param {String} m + * @default + */ + mainParameter: 'noise', + + /** + * Noise value, from + * @param {Number} noise + * @default + */ + noise: 0, + + /** + * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function(options) { + if (this.noise === 0) { + return; + } + var imageData = options.imageData, + data = imageData.data, i, len = data.length, + noise = this.noise, rand; + + for (i = 0, len = data.length; i < len; i += 4) { + + rand = (0.5 - Math.random()) * noise; + + data[i] += rand; + data[i + 1] += rand; + data[i + 2] += rand; + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uNoise: gl.getUniformLocation(program, 'uNoise'), + uSeed: gl.getUniformLocation(program, 'uSeed'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform1f(uniformLocations.uNoise, this.noise / 255); + gl.uniform1f(uniformLocations.uSeed, Math.random()); + }, + + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function() { + return extend(this.callSuper('toObject'), { + noise: this.noise + }); + } + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {Function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Noise} Instance of fabric.Image.filters.Noise + */ + fabric.Image.filters.Noise.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Pixelate filter class + * @class fabric.Image.filters.Pixelate + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Pixelate#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Pixelate({ + * blocksize: 8 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Pixelate = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Pixelate.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Pixelate', + + blocksize: 4, + + mainParameter: 'blocksize', + + /** + * Fragment source for the Pixelate program + */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uBlocksize;\n' + + 'uniform float uStepW;\n' + + 'uniform float uStepH;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'float blockW = uBlocksize * uStepW;\n' + + 'float blockH = uBlocksize * uStepW;\n' + + 'int posX = int(vTexCoord.x / blockW);\n' + + 'int posY = int(vTexCoord.y / blockH);\n' + + 'float fposX = float(posX);\n' + + 'float fposY = float(posY);\n' + + 'vec2 squareCoords = vec2(fposX * blockW, fposY * blockH);\n' + + 'vec4 color = texture2D(uTexture, squareCoords);\n' + + 'gl_FragColor = color;\n' + + '}', + + /** + * Apply the Pixelate operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function(options) { + var imageData = options.imageData, + data = imageData.data, + iLen = imageData.height, + jLen = imageData.width, + index, i, j, r, g, b, a, + _i, _j, _iLen, _jLen; + + for (i = 0; i < iLen; i += this.blocksize) { + for (j = 0; j < jLen; j += this.blocksize) { + + index = (i * 4) * jLen + (j * 4); + + r = data[index]; + g = data[index + 1]; + b = data[index + 2]; + a = data[index + 3]; + + _iLen = Math.min(i + this.blocksize, iLen); + _jLen = Math.min(j + this.blocksize, jLen); + for (_i = i; _i < _iLen; _i++) { + for (_j = j; _j < _jLen; _j++) { + index = (_i * 4) * jLen + (_j * 4); + data[index] = r; + data[index + 1] = g; + data[index + 2] = b; + data[index + 3] = a; + } + } + } + } + }, + + /** + * Indicate when the filter is not gonna apply changes to the image + **/ + isNeutralState: function() { + return this.blocksize === 1; + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uBlocksize: gl.getUniformLocation(program, 'uBlocksize'), + uStepW: gl.getUniformLocation(program, 'uStepW'), + uStepH: gl.getUniformLocation(program, 'uStepH'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform1f(uniformLocations.uBlocksize, this.blocksize); + }, + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {Function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Pixelate} Instance of fabric.Image.filters.Pixelate + */ + fabric.Image.filters.Pixelate.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + extend = fabric.util.object.extend, + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Remove white filter class + * @class fabric.Image.filters.RemoveColor + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.RemoveColor#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.RemoveColor({ + * threshold: 0.2, + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.RemoveColor = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.RemoveColor.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'RemoveColor', + + /** + * Color to remove, in any format understood by fabric.Color. + * @param {String} type + * @default + */ + color: '#FFFFFF', + + /** + * Fragment source for the brightness program + */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec4 uLow;\n' + + 'uniform vec4 uHigh;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'gl_FragColor = texture2D(uTexture, vTexCoord);\n' + + 'if(all(greaterThan(gl_FragColor.rgb,uLow.rgb)) && all(greaterThan(uHigh.rgb,gl_FragColor.rgb))) {\n' + + 'gl_FragColor.a = 0.0;\n' + + '}\n' + + '}', + + /** + * distance to actual color, as value up or down from each r,g,b + * between 0 and 1 + **/ + distance: 0.02, + + /** + * For color to remove inside distance, use alpha channel for a smoother deletion + * NOT IMPLEMENTED YET + **/ + useAlpha: false, + + /** + * Constructor + * @memberOf fabric.Image.filters.RemoveWhite.prototype + * @param {Object} [options] Options object + * @param {Number} [options.color=#RRGGBB] Threshold value + * @param {Number} [options.distance=10] Distance value + */ + + /** + * Applies filter to canvas element + * @param {Object} canvasEl Canvas element to apply filter to + */ + applyTo2d: function(options) { + var imageData = options.imageData, + data = imageData.data, i, + distance = this.distance * 255, + r, g, b, + source = new fabric.Color(this.color).getSource(), + lowC = [ + source[0] - distance, + source[1] - distance, + source[2] - distance, + ], + highC = [ + source[0] + distance, + source[1] + distance, + source[2] + distance, + ]; + + + for (i = 0; i < data.length; i += 4) { + r = data[i]; + g = data[i + 1]; + b = data[i + 2]; + + if (r > lowC[0] && + g > lowC[1] && + b > lowC[2] && + r < highC[0] && + g < highC[1] && + b < highC[2]) { + data[i + 3] = 0; + } + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uLow: gl.getUniformLocation(program, 'uLow'), + uHigh: gl.getUniformLocation(program, 'uHigh'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + var source = new fabric.Color(this.color).getSource(), + distance = parseFloat(this.distance), + lowC = [ + 0 + source[0] / 255 - distance, + 0 + source[1] / 255 - distance, + 0 + source[2] / 255 - distance, + 1 + ], + highC = [ + source[0] / 255 + distance, + source[1] / 255 + distance, + source[2] / 255 + distance, + 1 + ]; + gl.uniform4fv(uniformLocations.uLow, lowC); + gl.uniform4fv(uniformLocations.uHigh, highC); + }, + + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function() { + return extend(this.callSuper('toObject'), { + color: this.color, + distance: this.distance + }); + } + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {Function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.RemoveColor} Instance of fabric.Image.filters.RemoveWhite + */ + fabric.Image.filters.RemoveColor.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + var matrices = { + Brownie: [ + 0.59970,0.34553,-0.27082,0,0.186, + -0.03770,0.86095,0.15059,0,-0.1449, + 0.24113,-0.07441,0.44972,0,-0.02965, + 0,0,0,1,0 + ], + Vintage: [ + 0.62793,0.32021,-0.03965,0,0.03784, + 0.02578,0.64411,0.03259,0,0.02926, + 0.04660,-0.08512,0.52416,0,0.02023, + 0,0,0,1,0 + ], + Kodachrome: [ + 1.12855,-0.39673,-0.03992,0,0.24991, + -0.16404,1.08352,-0.05498,0,0.09698, + -0.16786,-0.56034,1.60148,0,0.13972, + 0,0,0,1,0 + ], + Technicolor: [ + 1.91252,-0.85453,-0.09155,0,0.04624, + -0.30878,1.76589,-0.10601,0,-0.27589, + -0.23110,-0.75018,1.84759,0,0.12137, + 0,0,0,1,0 + ], + Polaroid: [ + 1.438,-0.062,-0.062,0,0, + -0.122,1.378,-0.122,0,0, + -0.016,-0.016,1.483,0,0, + 0,0,0,1,0 + ], + Sepia: [ + 0.393, 0.769, 0.189, 0, 0, + 0.349, 0.686, 0.168, 0, 0, + 0.272, 0.534, 0.131, 0, 0, + 0, 0, 0, 1, 0 + ], + BlackWhite: [ + 1.5, 1.5, 1.5, 0, -1, + 1.5, 1.5, 1.5, 0, -1, + 1.5, 1.5, 1.5, 0, -1, + 0, 0, 0, 1, 0, + ] + }; + + for (var key in matrices) { + filters[key] = createClass(filters.ColorMatrix, /** @lends fabric.Image.filters.Sepia.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: key, + + /** + * Colormatrix for the effect + * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning + * outside the -1, 1 range. + * @param {Array} matrix array of 20 numbers. + * @default + */ + matrix: matrices[key], + + /** + * Lock the matrix export for this kind of static, parameter less filters. + */ + mainParameter: false, + /** + * Lock the colormatrix on the color part, skipping alpha + */ + colorsOnly: true, + + }); + fabric.Image.filters[key].fromObject = fabric.Image.filters.BaseFilter.fromObject; + } +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + 'use strict'; + + var fabric = global.fabric, + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Color Blend filter class + * @class fabric.Image.filter.BlendColor + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @example + * var filter = new fabric.Image.filters.BlendColor({ + * color: '#000', + * mode: 'multiply' + * }); + * + * var filter = new fabric.Image.filters.BlendImage({ + * image: fabricImageObject, + * mode: 'multiply', + * alpha: 0.5 + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + + filters.BlendColor = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Blend.prototype */ { + type: 'BlendColor', + + /** + * Color to make the blend operation with. default to a reddish color since black or white + * gives always strong result. + * @type String + * @default + **/ + color: '#F95C63', + + /** + * Blend mode for the filter: one of multiply, add, diff, screen, subtract, + * darken, lighten, overlay, exclusion, tint. + * @type String + * @default + **/ + mode: 'multiply', + + /** + * alpha value. represent the strength of the blend color operation. + * @type Number + * @default + **/ + alpha: 1, + + /** + * Fragment source for the Multiply program + */ + fragmentSource: { + multiply: 'gl_FragColor.rgb *= uColor.rgb;\n', + screen: 'gl_FragColor.rgb = 1.0 - (1.0 - gl_FragColor.rgb) * (1.0 - uColor.rgb);\n', + add: 'gl_FragColor.rgb += uColor.rgb;\n', + diff: 'gl_FragColor.rgb = abs(gl_FragColor.rgb - uColor.rgb);\n', + subtract: 'gl_FragColor.rgb -= uColor.rgb;\n', + lighten: 'gl_FragColor.rgb = max(gl_FragColor.rgb, uColor.rgb);\n', + darken: 'gl_FragColor.rgb = min(gl_FragColor.rgb, uColor.rgb);\n', + exclusion: 'gl_FragColor.rgb += uColor.rgb - 2.0 * (uColor.rgb * gl_FragColor.rgb);\n', + overlay: 'if (uColor.r < 0.5) {\n' + + 'gl_FragColor.r *= 2.0 * uColor.r;\n' + + '} else {\n' + + 'gl_FragColor.r = 1.0 - 2.0 * (1.0 - gl_FragColor.r) * (1.0 - uColor.r);\n' + + '}\n' + + 'if (uColor.g < 0.5) {\n' + + 'gl_FragColor.g *= 2.0 * uColor.g;\n' + + '} else {\n' + + 'gl_FragColor.g = 1.0 - 2.0 * (1.0 - gl_FragColor.g) * (1.0 - uColor.g);\n' + + '}\n' + + 'if (uColor.b < 0.5) {\n' + + 'gl_FragColor.b *= 2.0 * uColor.b;\n' + + '} else {\n' + + 'gl_FragColor.b = 1.0 - 2.0 * (1.0 - gl_FragColor.b) * (1.0 - uColor.b);\n' + + '}\n', + tint: 'gl_FragColor.rgb *= (1.0 - uColor.a);\n' + + 'gl_FragColor.rgb += uColor.rgb;\n', + }, + + /** + * build the fragment source for the filters, joining the common part with + * the specific one. + * @param {String} mode the mode of the filter, a key of this.fragmentSource + * @return {String} the source to be compiled + * @private + */ + buildSource: function(mode) { + return 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec4 uColor;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'gl_FragColor = color;\n' + + 'if (color.a > 0.0) {\n' + + this.fragmentSource[mode] + + '}\n' + + '}'; + }, + + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function(options) { + var cacheKey = this.type + '_' + this.mode, shaderSource; + if (!options.programCache.hasOwnProperty(cacheKey)) { + shaderSource = this.buildSource(this.mode); + options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); + } + return options.programCache[cacheKey]; + }, + + /** + * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function(options) { + var imageData = options.imageData, + data = imageData.data, iLen = data.length, + tr, tg, tb, + r, g, b, + source, alpha1 = 1 - this.alpha; + + source = new fabric.Color(this.color).getSource(); + tr = source[0] * this.alpha; + tg = source[1] * this.alpha; + tb = source[2] * this.alpha; + + for (var i = 0; i < iLen; i += 4) { + + r = data[i]; + g = data[i + 1]; + b = data[i + 2]; + + switch (this.mode) { + case 'multiply': + data[i] = r * tr / 255; + data[i + 1] = g * tg / 255; + data[i + 2] = b * tb / 255; + break; + case 'screen': + data[i] = 255 - (255 - r) * (255 - tr) / 255; + data[i + 1] = 255 - (255 - g) * (255 - tg) / 255; + data[i + 2] = 255 - (255 - b) * (255 - tb) / 255; + break; + case 'add': + data[i] = r + tr; + data[i + 1] = g + tg; + data[i + 2] = b + tb; + break; + case 'diff': + case 'difference': + data[i] = Math.abs(r - tr); + data[i + 1] = Math.abs(g - tg); + data[i + 2] = Math.abs(b - tb); + break; + case 'subtract': + data[i] = r - tr; + data[i + 1] = g - tg; + data[i + 2] = b - tb; + break; + case 'darken': + data[i] = Math.min(r, tr); + data[i + 1] = Math.min(g, tg); + data[i + 2] = Math.min(b, tb); + break; + case 'lighten': + data[i] = Math.max(r, tr); + data[i + 1] = Math.max(g, tg); + data[i + 2] = Math.max(b, tb); + break; + case 'overlay': + data[i] = tr < 128 ? (2 * r * tr / 255) : (255 - 2 * (255 - r) * (255 - tr) / 255); + data[i + 1] = tg < 128 ? (2 * g * tg / 255) : (255 - 2 * (255 - g) * (255 - tg) / 255); + data[i + 2] = tb < 128 ? (2 * b * tb / 255) : (255 - 2 * (255 - b) * (255 - tb) / 255); + break; + case 'exclusion': + data[i] = tr + r - ((2 * tr * r) / 255); + data[i + 1] = tg + g - ((2 * tg * g) / 255); + data[i + 2] = tb + b - ((2 * tb * b) / 255); + break; + case 'tint': + data[i] = tr + r * alpha1; + data[i + 1] = tg + g * alpha1; + data[i + 2] = tb + b * alpha1; + } + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uColor: gl.getUniformLocation(program, 'uColor'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + var source = new fabric.Color(this.color).getSource(); + source[0] = this.alpha * source[0] / 255; + source[1] = this.alpha * source[1] / 255; + source[2] = this.alpha * source[2] / 255; + source[3] = this.alpha; + gl.uniform4fv(uniformLocations.uColor, source); + }, + + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function() { + return { + type: this.type, + color: this.color, + mode: this.mode, + alpha: this.alpha + }; + } + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.BlendColor} Instance of fabric.Image.filters.BlendColor + */ + fabric.Image.filters.BlendColor.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + 'use strict'; + + var fabric = global.fabric, + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Image Blend filter class + * @class fabric.Image.filter.BlendImage + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @example + * var filter = new fabric.Image.filters.BlendColor({ + * color: '#000', + * mode: 'multiply' + * }); + * + * var filter = new fabric.Image.filters.BlendImage({ + * image: fabricImageObject, + * mode: 'multiply', + * alpha: 0.5 + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + + filters.BlendImage = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.BlendImage.prototype */ { + type: 'BlendImage', + + /** + * Color to make the blend operation with. default to a reddish color since black or white + * gives always strong result. + **/ + image: null, + + /** + * Blend mode for the filter (one of "multiply", "mask") + * @type String + * @default + **/ + mode: 'multiply', + + /** + * alpha value. represent the strength of the blend image operation. + * not implemented. + **/ + alpha: 1, + + vertexSource: 'attribute vec2 aPosition;\n' + + 'varying vec2 vTexCoord;\n' + + 'varying vec2 vTexCoord2;\n' + + 'uniform mat3 uTransformMatrix;\n' + + 'void main() {\n' + + 'vTexCoord = aPosition;\n' + + 'vTexCoord2 = (uTransformMatrix * vec3(aPosition, 1.0)).xy;\n' + + 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\n' + + '}', + + /** + * Fragment source for the Multiply program + */ + fragmentSource: { + multiply: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform sampler2D uImage;\n' + + 'uniform vec4 uColor;\n' + + 'varying vec2 vTexCoord;\n' + + 'varying vec2 vTexCoord2;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'vec4 color2 = texture2D(uImage, vTexCoord2);\n' + + 'color.rgba *= color2.rgba;\n' + + 'gl_FragColor = color;\n' + + '}', + mask: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform sampler2D uImage;\n' + + 'uniform vec4 uColor;\n' + + 'varying vec2 vTexCoord;\n' + + 'varying vec2 vTexCoord2;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'vec4 color2 = texture2D(uImage, vTexCoord2);\n' + + 'color.a = color2.a;\n' + + 'gl_FragColor = color;\n' + + '}', + }, + + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function(options) { + var cacheKey = this.type + '_' + this.mode; + var shaderSource = this.fragmentSource[this.mode]; + if (!options.programCache.hasOwnProperty(cacheKey)) { + options.programCache[cacheKey] = this.createProgram(options.context, shaderSource); + } + return options.programCache[cacheKey]; + }, + + applyToWebGL: function(options) { + // load texture to blend. + var gl = options.context, + texture = this.createTexture(options.filterBackend, this.image); + this.bindAdditionalTexture(gl, texture, gl.TEXTURE1); + this.callSuper('applyToWebGL', options); + this.unbindAdditionalTexture(gl, gl.TEXTURE1); + }, + + createTexture: function(backend, image) { + return backend.getCachedTexture(image.cacheKey, image._element); + }, + + /** + * Calculate a transformMatrix to adapt the image to blend over + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + calculateMatrix: function() { + var image = this.image, + width = image._element.width, + height = image._element.height; + return [ + 1 / image.scaleX, 0, 0, + 0, 1 / image.scaleY, 0, + -image.left / width, -image.top / height, 1 + ]; + }, + + /** + * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function(options) { + var imageData = options.imageData, + resources = options.filterBackend.resources, + data = imageData.data, iLen = data.length, + width = imageData.width, + height = imageData.height, + tr, tg, tb, ta, + r, g, b, a, + canvas1, context, image = this.image, blendData; + + if (!resources.blendImage) { + resources.blendImage = fabric.util.createCanvasElement(); + } + canvas1 = resources.blendImage; + context = canvas1.getContext('2d'); + if (canvas1.width !== width || canvas1.height !== height) { + canvas1.width = width; + canvas1.height = height; + } + else { + context.clearRect(0, 0, width, height); + } + context.setTransform(image.scaleX, 0, 0, image.scaleY, image.left, image.top); + context.drawImage(image._element, 0, 0, width, height); + blendData = context.getImageData(0, 0, width, height).data; + for (var i = 0; i < iLen; i += 4) { + + r = data[i]; + g = data[i + 1]; + b = data[i + 2]; + a = data[i + 3]; + + tr = blendData[i]; + tg = blendData[i + 1]; + tb = blendData[i + 2]; + ta = blendData[i + 3]; + + switch (this.mode) { + case 'multiply': + data[i] = r * tr / 255; + data[i + 1] = g * tg / 255; + data[i + 2] = b * tb / 255; + data[i + 3] = a * ta / 255; + break; + case 'mask': + data[i + 3] = ta; + break; + } + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uTransformMatrix: gl.getUniformLocation(program, 'uTransformMatrix'), + uImage: gl.getUniformLocation(program, 'uImage'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + var matrix = this.calculateMatrix(); + gl.uniform1i(uniformLocations.uImage, 1); // texture unit 1. + gl.uniformMatrix3fv(uniformLocations.uTransformMatrix, false, matrix); + }, + + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function() { + return { + type: this.type, + image: this.image && this.image.toObject(), + mode: this.mode, + alpha: this.alpha + }; + } + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} callback to be invoked after filter creation + * @return {fabric.Image.filters.BlendImage} Instance of fabric.Image.filters.BlendImage + */ + fabric.Image.filters.BlendImage.fromObject = function(object, callback) { + fabric.Image.fromObject(object.image, function(image) { + var options = fabric.util.object.clone(object); + options.image = image; + callback(new fabric.Image.filters.BlendImage(options)); }); + }; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), pow = Math.pow, floor = Math.floor, + sqrt = Math.sqrt, abs = Math.abs, round = Math.round, sin = Math.sin, + ceil = Math.ceil, + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Resize image filter class + * @class fabric.Image.filters.Resize + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Resize(); + * object.filters.push(filter); + * object.applyFilters(canvas.renderAll.bind(canvas)); + */ + filters.Resize = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Resize.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Resize', + + /** + * Resize type + * for webgl resizeType is just lanczos, for canvas2d can be: + * bilinear, hermite, sliceHack, lanczos. + * @param {String} resizeType + * @default + */ + resizeType: 'hermite', + + /** + * Scale factor for resizing, x axis + * @param {Number} scaleX + * @default + */ + scaleX: 1, + + /** + * Scale factor for resizing, y axis + * @param {Number} scaleY + * @default + */ + scaleY: 1, + + /** + * LanczosLobes parameter for lanczos filter, valid for resizeType lanczos + * @param {Number} lanczosLobes + * @default + */ + lanczosLobes: 3, + + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uDelta: gl.getUniformLocation(program, 'uDelta'), + uTaps: gl.getUniformLocation(program, 'uTaps'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform2fv(uniformLocations.uDelta, this.horizontal ? [1 / this.width, 0] : [0, 1 / this.height]); + gl.uniform1fv(uniformLocations.uTaps, this.taps); + }, + + /** + * Retrieves the cached shader. + * @param {Object} options + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + retrieveShader: function(options) { + var filterWindow = this.getFilterWindow(), cacheKey = this.type + '_' + filterWindow; + if (!options.programCache.hasOwnProperty(cacheKey)) { + var fragmentShader = this.generateShader(filterWindow); + options.programCache[cacheKey] = this.createProgram(options.context, fragmentShader); + } + return options.programCache[cacheKey]; + }, + + getFilterWindow: function() { + var scale = this.tempScale; + return Math.ceil(this.lanczosLobes / scale); + }, + + getTaps: function() { + var lobeFunction = this.lanczosCreate(this.lanczosLobes), scale = this.tempScale, + filterWindow = this.getFilterWindow(), taps = new Array(filterWindow); + for (var i = 1; i <= filterWindow; i++) { + taps[i - 1] = lobeFunction(i * scale); + } + return taps; + }, + + /** + * Generate vertex and shader sources from the necessary steps numbers + * @param {Number} filterWindow + */ + generateShader: function(filterWindow) { + var offsets = new Array(filterWindow), + fragmentShader = this.fragmentSourceTOP, filterWindow; + + for (var i = 1; i <= filterWindow; i++) { + offsets[i - 1] = i + '.0 * uDelta'; + } + + fragmentShader += 'uniform float uTaps[' + filterWindow + '];\n'; + fragmentShader += 'void main() {\n'; + fragmentShader += ' vec4 color = texture2D(uTexture, vTexCoord);\n'; + fragmentShader += ' float sum = 1.0;\n'; + + offsets.forEach(function(offset, i) { + fragmentShader += ' color += texture2D(uTexture, vTexCoord + ' + offset + ') * uTaps[' + i + '];\n'; + fragmentShader += ' color += texture2D(uTexture, vTexCoord - ' + offset + ') * uTaps[' + i + '];\n'; + fragmentShader += ' sum += 2.0 * uTaps[' + i + '];\n'; + }); + fragmentShader += ' gl_FragColor = color / sum;\n'; + fragmentShader += '}'; + return fragmentShader; + }, + + fragmentSourceTOP: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec2 uDelta;\n' + + 'varying vec2 vTexCoord;\n', + + /** + * Apply the resize filter to the image + * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be executed + * @param {Boolean} options.webgl Whether to use webgl to render the filter. + * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. + * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + applyTo: function(options) { + if (options.webgl) { + options.passes++; + this.width = options.sourceWidth; + this.horizontal = true; + this.dW = Math.round(this.width * this.scaleX); + this.dH = options.sourceHeight; + this.tempScale = this.dW / this.width; + this.taps = this.getTaps(); + options.destinationWidth = this.dW; + this._setupFrameBuffer(options); + this.applyToWebGL(options); + this._swapTextures(options); + options.sourceWidth = options.destinationWidth; + + this.height = options.sourceHeight; + this.horizontal = false; + this.dH = Math.round(this.height * this.scaleY); + this.tempScale = this.dH / this.height; + this.taps = this.getTaps(); + options.destinationHeight = this.dH; + this._setupFrameBuffer(options); + this.applyToWebGL(options); + this._swapTextures(options); + options.sourceHeight = options.destinationHeight; + } + else { + this.applyTo2d(options); + } + }, + + isNeutralState: function() { + return this.scaleX === 1 && this.scaleY === 1; + }, + + lanczosCreate: function(lobes) { + return function(x) { + if (x >= lobes || x <= -lobes) { + return 0.0; + } + if (x < 1.19209290E-07 && x > -1.19209290E-07) { + return 1.0; + } + x *= Math.PI; + var xx = x / lobes; + return (sin(x) / x) * sin(xx) / xx; + }; + }, + + /** + * Applies filter to canvas element + * @memberOf fabric.Image.filters.Resize.prototype + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} scaleX + * @param {Number} scaleY + */ + applyTo2d: function(options) { + var imageData = options.imageData, + scaleX = this.scaleX, + scaleY = this.scaleY; + + this.rcpScaleX = 1 / scaleX; + this.rcpScaleY = 1 / scaleY; + + var oW = imageData.width, oH = imageData.height, + dW = round(oW * scaleX), dH = round(oH * scaleY), + newData; + + if (this.resizeType === 'sliceHack') { + newData = this.sliceByTwo(options, oW, oH, dW, dH); + } + else if (this.resizeType === 'hermite') { + newData = this.hermiteFastResize(options, oW, oH, dW, dH); + } + else if (this.resizeType === 'bilinear') { + newData = this.bilinearFiltering(options, oW, oH, dW, dH); + } + else if (this.resizeType === 'lanczos') { + newData = this.lanczosResize(options, oW, oH, dW, dH); + } + options.imageData = newData; + }, + + /** + * Filter sliceByTwo + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} oW Original Width + * @param {Number} oH Original Height + * @param {Number} dW Destination Width + * @param {Number} dH Destination Height + * @returns {ImageData} + */ + sliceByTwo: function(options, oW, oH, dW, dH) { + var imageData = options.imageData, + mult = 0.5, doneW = false, doneH = false, stepW = oW * mult, + stepH = oH * mult, resources = fabric.filterBackend.resources, + tmpCanvas, ctx, sX = 0, sY = 0, dX = oW, dY = 0; + if (!resources.sliceByTwo) { + resources.sliceByTwo = document.createElement('canvas'); + } + tmpCanvas = resources.sliceByTwo; + if (tmpCanvas.width < oW * 1.5 || tmpCanvas.height < oH) { + tmpCanvas.width = oW * 1.5; + tmpCanvas.height = oH; + } + ctx = tmpCanvas.getContext('2d'); + ctx.clearRect(0, 0, oW * 1.5, oH); + ctx.putImageData(imageData, 0, 0); + + dW = floor(dW); + dH = floor(dH); + + while (!doneW || !doneH) { + oW = stepW; + oH = stepH; + if (dW < floor(stepW * mult)) { + stepW = floor(stepW * mult); + } + else { + stepW = dW; + doneW = true; + } + if (dH < floor(stepH * mult)) { + stepH = floor(stepH * mult); + } + else { + stepH = dH; + doneH = true; + } + ctx.drawImage(tmpCanvas, sX, sY, oW, oH, dX, dY, stepW, stepH); + sX = dX; + sY = dY; + dY += stepH; + } + return ctx.getImageData(sX, sY, dW, dH); + }, + + /** + * Filter lanczosResize + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} oW Original Width + * @param {Number} oH Original Height + * @param {Number} dW Destination Width + * @param {Number} dH Destination Height + * @returns {ImageData} + */ + lanczosResize: function(options, oW, oH, dW, dH) { + + function process(u) { + var v, i, weight, idx, a, red, green, + blue, alpha, fX, fY; + center.x = (u + 0.5) * ratioX; + icenter.x = floor(center.x); + for (v = 0; v < dH; v++) { + center.y = (v + 0.5) * ratioY; + icenter.y = floor(center.y); + a = 0; red = 0; green = 0; blue = 0; alpha = 0; + for (i = icenter.x - range2X; i <= icenter.x + range2X; i++) { + if (i < 0 || i >= oW) { + continue; + } + fX = floor(1000 * abs(i - center.x)); + if (!cacheLanc[fX]) { + cacheLanc[fX] = { }; + } + for (var j = icenter.y - range2Y; j <= icenter.y + range2Y; j++) { + if (j < 0 || j >= oH) { + continue; + } + fY = floor(1000 * abs(j - center.y)); + if (!cacheLanc[fX][fY]) { + cacheLanc[fX][fY] = lanczos(sqrt(pow(fX * rcpRatioX, 2) + pow(fY * rcpRatioY, 2)) / 1000); + } + weight = cacheLanc[fX][fY]; + if (weight > 0) { + idx = (j * oW + i) * 4; + a += weight; + red += weight * srcData[idx]; + green += weight * srcData[idx + 1]; + blue += weight * srcData[idx + 2]; + alpha += weight * srcData[idx + 3]; + } + } + } + idx = (v * dW + u) * 4; + destData[idx] = red / a; + destData[idx + 1] = green / a; + destData[idx + 2] = blue / a; + destData[idx + 3] = alpha / a; + } + + if (++u < dW) { + return process(u); + } + else { + return destImg; + } + } + + var srcData = options.imageData.data, + destImg = options.ctx.createImageData(dW, dH), + destData = destImg.data, + lanczos = this.lanczosCreate(this.lanczosLobes), + ratioX = this.rcpScaleX, ratioY = this.rcpScaleY, + rcpRatioX = 2 / this.rcpScaleX, rcpRatioY = 2 / this.rcpScaleY, + range2X = ceil(ratioX * this.lanczosLobes / 2), + range2Y = ceil(ratioY * this.lanczosLobes / 2), + cacheLanc = { }, center = { }, icenter = { }; + + return process(0); + }, + + /** + * bilinearFiltering + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} oW Original Width + * @param {Number} oH Original Height + * @param {Number} dW Destination Width + * @param {Number} dH Destination Height + * @returns {ImageData} + */ + bilinearFiltering: function(options, oW, oH, dW, dH) { + var a, b, c, d, x, y, i, j, xDiff, yDiff, chnl, + color, offset = 0, origPix, ratioX = this.rcpScaleX, + ratioY = this.rcpScaleY, + w4 = 4 * (oW - 1), img = options.imageData, + pixels = img.data, destImage = options.ctx.createImageData(dW, dH), + destPixels = destImage.data; + for (i = 0; i < dH; i++) { + for (j = 0; j < dW; j++) { + x = floor(ratioX * j); + y = floor(ratioY * i); + xDiff = ratioX * j - x; + yDiff = ratioY * i - y; + origPix = 4 * (y * oW + x); + + for (chnl = 0; chnl < 4; chnl++) { + a = pixels[origPix + chnl]; + b = pixels[origPix + 4 + chnl]; + c = pixels[origPix + w4 + chnl]; + d = pixels[origPix + w4 + 4 + chnl]; + color = a * (1 - xDiff) * (1 - yDiff) + b * xDiff * (1 - yDiff) + + c * yDiff * (1 - xDiff) + d * xDiff * yDiff; + destPixels[offset++] = color; + } + } + } + return destImage; + }, + + /** + * hermiteFastResize + * @param {Object} canvasEl Canvas element to apply filter to + * @param {Number} oW Original Width + * @param {Number} oH Original Height + * @param {Number} dW Destination Width + * @param {Number} dH Destination Height + * @returns {ImageData} + */ + hermiteFastResize: function(options, oW, oH, dW, dH) { + var ratioW = this.rcpScaleX, ratioH = this.rcpScaleY, + ratioWHalf = ceil(ratioW / 2), + ratioHHalf = ceil(ratioH / 2), + img = options.imageData, data = img.data, + img2 = options.ctx.createImageData(dW, dH), data2 = img2.data; + for (var j = 0; j < dH; j++) { + for (var i = 0; i < dW; i++) { + var x2 = (i + j * dW) * 4, weight = 0, weights = 0, weightsAlpha = 0, + gxR = 0, gxG = 0, gxB = 0, gxA = 0, centerY = (j + 0.5) * ratioH; + for (var yy = floor(j * ratioH); yy < (j + 1) * ratioH; yy++) { + var dy = abs(centerY - (yy + 0.5)) / ratioHHalf, + centerX = (i + 0.5) * ratioW, w0 = dy * dy; + for (var xx = floor(i * ratioW); xx < (i + 1) * ratioW; xx++) { + var dx = abs(centerX - (xx + 0.5)) / ratioWHalf, + w = sqrt(w0 + dx * dx); + /* eslint-disable max-depth */ + if (w > 1 && w < -1) { + continue; + } + //hermite filter + weight = 2 * w * w * w - 3 * w * w + 1; + if (weight > 0) { + dx = 4 * (xx + yy * oW); + //alpha + gxA += weight * data[dx + 3]; + weightsAlpha += weight; + //colors + if (data[dx + 3] < 255) { + weight = weight * data[dx + 3] / 250; + } + gxR += weight * data[dx]; + gxG += weight * data[dx + 1]; + gxB += weight * data[dx + 2]; + weights += weight; + } + /* eslint-enable max-depth */ + } + } + data2[x2] = gxR / weights; + data2[x2 + 1] = gxG / weights; + data2[x2 + 2] = gxB / weights; + data2[x2 + 3] = gxA / weightsAlpha; + } + } + return img2; + }, + + /** + * Returns object representation of an instance + * @return {Object} Object representation of an instance + */ + toObject: function() { + return { + type: this.type, + scaleX: this.scaleX, + scaleY: this.scaleY, + resizeType: this.resizeType, + lanczosLobes: this.lanczosLobes + }; + } + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {Function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Resize} Instance of fabric.Image.filters.Resize + */ + fabric.Image.filters.Resize.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Contrast filter class + * @class fabric.Image.filters.Contrast + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Contrast#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Contrast({ + * contrast: 0.25 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Contrast = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Contrast.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Contrast', + + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uContrast;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'float contrastF = 1.015 * (uContrast + 1.0) / (1.0 * (1.015 - uContrast));\n' + + 'color.rgb = contrastF * (color.rgb - 0.5) + 0.5;\n' + + 'gl_FragColor = color;\n' + + '}', + + /** + * contrast value, range from -1 to 1. + * @param {Number} contrast + * @default 0 + */ + contrast: 0, + + mainParameter: 'contrast', + + /** + * Constructor + * @memberOf fabric.Image.filters.Contrast.prototype + * @param {Object} [options] Options object + * @param {Number} [options.contrast=0] Value to contrast the image up (-1...1) + */ + + /** + * Apply the Contrast operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function(options) { + if (this.contrast === 0) { + return; + } + var imageData = options.imageData, i, len, + data = imageData.data, len = data.length, + contrast = Math.floor(this.contrast * 255), + contrastF = 259 * (contrast + 255) / (255 * (259 - contrast)); + + for (i = 0; i < len; i += 4) { + data[i] = contrastF * (data[i] - 128) + 128; + data[i + 1] = contrastF * (data[i + 1] - 128) + 128; + data[i + 2] = contrastF * (data[i + 2] - 128) + 128; + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uContrast: gl.getUniformLocation(program, 'uContrast'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform1f(uniformLocations.uContrast, this.contrast); + }, + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Contrast} Instance of fabric.Image.filters.Contrast + */ + fabric.Image.filters.Contrast.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Saturate filter class + * @class fabric.Image.filters.Saturation + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Saturation#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Saturation({ + * saturation: 1 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Saturation = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Saturation.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Saturation', + + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uSaturation;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'float rgMax = max(color.r, color.g);\n' + + 'float rgbMax = max(rgMax, color.b);\n' + + 'color.r += rgbMax != color.r ? (rgbMax - color.r) * uSaturation : 0.00;\n' + + 'color.g += rgbMax != color.g ? (rgbMax - color.g) * uSaturation : 0.00;\n' + + 'color.b += rgbMax != color.b ? (rgbMax - color.b) * uSaturation : 0.00;\n' + + 'gl_FragColor = color;\n' + + '}', + + /** + * Saturation value, from -1 to 1. + * Increases/decreases the color saturation. + * A value of 0 has no effect. + * + * @param {Number} saturation + * @default + */ + saturation: 0, + + mainParameter: 'saturation', + + /** + * Constructor + * @memberOf fabric.Image.filters.Saturate.prototype + * @param {Object} [options] Options object + * @param {Number} [options.saturate=0] Value to saturate the image (-1...1) + */ + + /** + * Apply the Saturation operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function(options) { + if (this.saturation === 0) { + return; + } + var imageData = options.imageData, + data = imageData.data, len = data.length, + adjust = -this.saturation, i, max; + + for (i = 0; i < len; i += 4) { + max = Math.max(data[i], data[i + 1], data[i + 2]); + data[i] += max !== data[i] ? (max - data[i]) * adjust : 0; + data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * adjust : 0; + data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * adjust : 0; + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uSaturation: gl.getUniformLocation(program, 'uSaturation'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform1f(uniformLocations.uSaturation, -this.saturation); + }, + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {Function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Saturation} Instance of fabric.Image.filters.Saturate + */ + fabric.Image.filters.Saturation.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Vibrance filter class + * @class fabric.Image.filters.Vibrance + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Vibrance#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Vibrance({ + * vibrance: 1 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Vibrance = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Vibrance.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Vibrance', + + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform float uVibrance;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'float max = max(color.r, max(color.g, color.b));\n' + + 'float avg = (color.r + color.g + color.b) / 3.0;\n' + + 'float amt = (abs(max - avg) * 2.0) * uVibrance;\n' + + 'color.r += max != color.r ? (max - color.r) * amt : 0.00;\n' + + 'color.g += max != color.g ? (max - color.g) * amt : 0.00;\n' + + 'color.b += max != color.b ? (max - color.b) * amt : 0.00;\n' + + 'gl_FragColor = color;\n' + + '}', + + /** + * Vibrance value, from -1 to 1. + * Increases/decreases the saturation of more muted colors with less effect on saturated colors. + * A value of 0 has no effect. + * + * @param {Number} vibrance + * @default + */ + vibrance: 0, + + mainParameter: 'vibrance', + + /** + * Constructor + * @memberOf fabric.Image.filters.Vibrance.prototype + * @param {Object} [options] Options object + * @param {Number} [options.vibrance=0] Vibrance value for the image (between -1 and 1) + */ + + /** + * Apply the Vibrance operation to a Uint8ClampedArray representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered. + */ + applyTo2d: function(options) { + if (this.vibrance === 0) { + return; + } + var imageData = options.imageData, + data = imageData.data, len = data.length, + adjust = -this.vibrance, i, max, avg, amt; + + for (i = 0; i < len; i += 4) { + max = Math.max(data[i], data[i + 1], data[i + 2]); + avg = (data[i] + data[i + 1] + data[i + 2]) / 3; + amt = ((Math.abs(max - avg) * 2 / 255) * adjust); + data[i] += max !== data[i] ? (max - data[i]) * amt : 0; + data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * amt : 0; + data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * amt : 0; + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uVibrance: gl.getUniformLocation(program, 'uVibrance'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform1f(uniformLocations.uVibrance, -this.vibrance); + }, + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {Function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Vibrance} Instance of fabric.Image.filters.Vibrance + */ + fabric.Image.filters.Vibrance.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Blur filter class + * @class fabric.Image.filters.Blur + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Blur#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Blur({ + * blur: 0.5 + * }); + * object.filters.push(filter); + * object.applyFilters(); + * canvas.renderAll(); + */ + filters.Blur = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Blur.prototype */ { + + type: 'Blur', + + /* +'gl_FragColor = vec4(0.0);', +'gl_FragColor += texture2D(texture, vTexCoord + -7 * uDelta)*0.0044299121055113265;', +'gl_FragColor += texture2D(texture, vTexCoord + -6 * uDelta)*0.00895781211794;', +'gl_FragColor += texture2D(texture, vTexCoord + -5 * uDelta)*0.0215963866053;', +'gl_FragColor += texture2D(texture, vTexCoord + -4 * uDelta)*0.0443683338718;', +'gl_FragColor += texture2D(texture, vTexCoord + -3 * uDelta)*0.0776744219933;', +'gl_FragColor += texture2D(texture, vTexCoord + -2 * uDelta)*0.115876621105;', +'gl_FragColor += texture2D(texture, vTexCoord + -1 * uDelta)*0.147308056121;', +'gl_FragColor += texture2D(texture, vTexCoord )*0.159576912161;', +'gl_FragColor += texture2D(texture, vTexCoord + 1 * uDelta)*0.147308056121;', +'gl_FragColor += texture2D(texture, vTexCoord + 2 * uDelta)*0.115876621105;', +'gl_FragColor += texture2D(texture, vTexCoord + 3 * uDelta)*0.0776744219933;', +'gl_FragColor += texture2D(texture, vTexCoord + 4 * uDelta)*0.0443683338718;', +'gl_FragColor += texture2D(texture, vTexCoord + 5 * uDelta)*0.0215963866053;', +'gl_FragColor += texture2D(texture, vTexCoord + 6 * uDelta)*0.00895781211794;', +'gl_FragColor += texture2D(texture, vTexCoord + 7 * uDelta)*0.0044299121055113265;', +*/ + + /* eslint-disable max-len */ + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec2 uDelta;\n' + + 'varying vec2 vTexCoord;\n' + + 'const float nSamples = 15.0;\n' + + 'vec3 v3offset = vec3(12.9898, 78.233, 151.7182);\n' + + 'float random(vec3 scale) {\n' + + /* use the fragment position for a different seed per-pixel */ + 'return fract(sin(dot(gl_FragCoord.xyz, scale)) * 43758.5453);\n' + + '}\n' + + 'void main() {\n' + + 'vec4 color = vec4(0.0);\n' + + 'float total = 0.0;\n' + + 'float offset = random(v3offset);\n' + + 'for (float t = -nSamples; t <= nSamples; t++) {\n' + + 'float percent = (t + offset - 0.5) / nSamples;\n' + + 'float weight = 1.0 - abs(percent);\n' + + 'color += texture2D(uTexture, vTexCoord + uDelta * percent) * weight;\n' + + 'total += weight;\n' + + '}\n' + + 'gl_FragColor = color / total;\n' + + '}', + /* eslint-enable max-len */ + + /** + * blur value, in percentage of image dimensions. + * specific to keep the image blur constant at different resolutions + * range between 0 and 1. + * @type Number + * @default + */ + blur: 0, + + mainParameter: 'blur', + + applyTo: function(options) { + if (options.webgl) { + // this aspectRatio is used to give the same blur to vertical and horizontal + this.aspectRatio = options.sourceWidth / options.sourceHeight; + options.passes++; + this._setupFrameBuffer(options); + this.horizontal = true; + this.applyToWebGL(options); + this._swapTextures(options); + this._setupFrameBuffer(options); + this.horizontal = false; + this.applyToWebGL(options); + this._swapTextures(options); + } + else { + this.applyTo2d(options); + } + }, + + applyTo2d: function(options) { + // paint canvasEl with current image data. + //options.ctx.putImageData(options.imageData, 0, 0); + options.imageData = this.simpleBlur(options); + }, + + simpleBlur: function(options) { + var resources = options.filterBackend.resources, canvas1, canvas2, + width = options.imageData.width, + height = options.imageData.height; + + if (!resources.blurLayer1) { + resources.blurLayer1 = fabric.util.createCanvasElement(); + resources.blurLayer2 = fabric.util.createCanvasElement(); + } + canvas1 = resources.blurLayer1; + canvas2 = resources.blurLayer2; + if (canvas1.width !== width || canvas1.height !== height) { + canvas2.width = canvas1.width = width; + canvas2.height = canvas1.height = height; + } + var ctx1 = canvas1.getContext('2d'), + ctx2 = canvas2.getContext('2d'), + nSamples = 15, + random, percent, j, i, + blur = this.blur * 0.06 * 0.5; + + // load first canvas + ctx1.putImageData(options.imageData, 0, 0); + ctx2.clearRect(0, 0, width, height); + + for (i = -nSamples; i <= nSamples; i++) { + random = (Math.random() - 0.5) / 4; + percent = i / nSamples; + j = blur * percent * width + random; + ctx2.globalAlpha = 1 - Math.abs(percent); + ctx2.drawImage(canvas1, j, random); + ctx1.drawImage(canvas2, 0, 0); + ctx2.globalAlpha = 1; + ctx2.clearRect(0, 0, canvas2.width, canvas2.height); + } + for (i = -nSamples; i <= nSamples; i++) { + random = (Math.random() - 0.5) / 4; + percent = i / nSamples; + j = blur * percent * height + random; + ctx2.globalAlpha = 1 - Math.abs(percent); + ctx2.drawImage(canvas1, random, j); + ctx1.drawImage(canvas2, 0, 0); + ctx2.globalAlpha = 1; + ctx2.clearRect(0, 0, canvas2.width, canvas2.height); + } + options.ctx.drawImage(canvas1, 0, 0); + var newImageData = options.ctx.getImageData(0, 0, canvas1.width, canvas1.height); + ctx1.globalAlpha = 1; + ctx1.clearRect(0, 0, canvas1.width, canvas1.height); + return newImageData; + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + delta: gl.getUniformLocation(program, 'uDelta'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + var delta = this.chooseRightDelta(); + gl.uniform2fv(uniformLocations.delta, delta); + }, + + /** + * choose right value of image percentage to blur with + * @returns {Array} a numeric array with delta values + */ + chooseRightDelta: function() { + var blurScale = 1, delta = [0, 0], blur; + if (this.horizontal) { + if (this.aspectRatio > 1) { + // image is wide, i want to shrink radius horizontal + blurScale = 1 / this.aspectRatio; + } + } + else { + if (this.aspectRatio < 1) { + // image is tall, i want to shrink radius vertical + blurScale = this.aspectRatio; + } + } + blur = blurScale * this.blur * 0.12; + if (this.horizontal) { + delta[0] = blur; + } + else { + delta[1] = blur; + } + return delta; + }, + }); + + /** + * Deserialize a JSON definition of a BlurFilter into a concrete instance. + */ + filters.Blur.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * Gamma filter class + * @class fabric.Image.filters.Gamma + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.Gamma#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.Gamma({ + * gamma: [1, 0.5, 2.1] + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.Gamma = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Gamma.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'Gamma', + + fragmentSource: 'precision highp float;\n' + + 'uniform sampler2D uTexture;\n' + + 'uniform vec3 uGamma;\n' + + 'varying vec2 vTexCoord;\n' + + 'void main() {\n' + + 'vec4 color = texture2D(uTexture, vTexCoord);\n' + + 'vec3 correction = (1.0 / uGamma);\n' + + 'color.r = pow(color.r, correction.r);\n' + + 'color.g = pow(color.g, correction.g);\n' + + 'color.b = pow(color.b, correction.b);\n' + + 'gl_FragColor = color;\n' + + 'gl_FragColor.rgb *= color.a;\n' + + '}', + + /** + * Gamma array value, from 0.01 to 2.2. + * @param {Array} gamma + * @default + */ + gamma: [1, 1, 1], + + /** + * Describe the property that is the filter parameter + * @param {String} m + * @default + */ + mainParameter: 'gamma', + + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function(options) { + this.gamma = [1, 1, 1]; + filters.BaseFilter.prototype.initialize.call(this, options); + }, + + /** + * Apply the Gamma operation to a Uint8Array representing the pixels of an image. + * + * @param {Object} options + * @param {ImageData} options.imageData The Uint8Array to be filtered. + */ + applyTo2d: function(options) { + var imageData = options.imageData, data = imageData.data, + gamma = this.gamma, len = data.length, + rInv = 1 / gamma[0], gInv = 1 / gamma[1], + bInv = 1 / gamma[2], i; + + if (!this.rVals) { + // eslint-disable-next-line + this.rVals = new Uint8Array(256); + // eslint-disable-next-line + this.gVals = new Uint8Array(256); + // eslint-disable-next-line + this.bVals = new Uint8Array(256); + } + + // This is an optimization - pre-compute a look-up table for each color channel + // instead of performing these pow calls for each pixel in the image. + for (i = 0, len = 256; i < len; i++) { + this.rVals[i] = Math.pow(i / 255, rInv) * 255; + this.gVals[i] = Math.pow(i / 255, gInv) * 255; + this.bVals[i] = Math.pow(i / 255, bInv) * 255; + } + for (i = 0, len = data.length; i < len; i += 4) { + data[i] = this.rVals[data[i]]; + data[i + 1] = this.gVals[data[i + 1]]; + data[i + 2] = this.bVals[data[i + 2]]; + } + }, + + /** + * Return WebGL uniform locations for this filter's shader. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {WebGLShaderProgram} program This filter's compiled shader program. + */ + getUniformLocations: function(gl, program) { + return { + uGamma: gl.getUniformLocation(program, 'uGamma'), + }; + }, + + /** + * Send data from this filter to its shader program's uniforms. + * + * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader. + * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects + */ + sendUniformData: function(gl, uniformLocations) { + gl.uniform3fv(uniformLocations.uGamma, this.gamma); + }, + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.Gamma} Instance of fabric.Image.filters.Gamma + */ + fabric.Image.filters.Gamma.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * A container class that knows how to apply a sequence of filters to an input image. + */ + filters.Composed = createClass(filters.BaseFilter, /** @lends fabric.Image.filters.Composed.prototype */ { + + type: 'Composed', + + /** + * A non sparse array of filters to apply + */ + subFilters: [], + + /** + * Constructor + * @param {Object} [options] Options object + */ + initialize: function(options) { + this.callSuper('initialize', options); + // create a new array instead mutating the prototype with push + this.subFilters = this.subFilters.slice(0); + }, + + /** + * Apply this container's filters to the input image provided. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be applied. + */ + applyTo: function(options) { + options.passes += this.subFilters.length - 1; + this.subFilters.forEach(function(filter) { + filter.applyTo(options); + }); + }, + + /** + * Serialize this filter into JSON. + * + * @returns {Object} A JSON representation of this filter. + */ + toObject: function() { + return fabric.util.object.extend(this.callSuper('toObject'), { + subFilters: this.subFilters.map(function(filter) { return filter.toObject(); }), + }); + }, + + isNeutralState: function() { + return !this.subFilters.some(function(filter) { return !filter.isNeutralState(); }); + } + }); + + /** + * Deserialize a JSON definition of a ComposedFilter into a concrete instance. + */ + fabric.Image.filters.Composed.fromObject = function(object, callback) { + var filters = object.subFilters || [], + subFilters = filters.map(function(filter) { + return new fabric.Image.filters[filter.type](filter); + }), + instance = new fabric.Image.filters.Composed({ subFilters: subFilters }); + callback && callback(instance); + return instance; + }; +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + filters = fabric.Image.filters, + createClass = fabric.util.createClass; + + /** + * HueRotation filter class + * @class fabric.Image.filters.HueRotation + * @memberOf fabric.Image.filters + * @extends fabric.Image.filters.BaseFilter + * @see {@link fabric.Image.filters.HueRotation#initialize} for constructor definition + * @see {@link http://fabricjs.com/image-filters|ImageFilters demo} + * @example + * var filter = new fabric.Image.filters.HueRotation({ + * rotation: -0.5 + * }); + * object.filters.push(filter); + * object.applyFilters(); + */ + filters.HueRotation = createClass(filters.ColorMatrix, /** @lends fabric.Image.filters.HueRotation.prototype */ { + + /** + * Filter type + * @param {String} type + * @default + */ + type: 'HueRotation', + + /** + * HueRotation value, from -1 to 1. + * the unit is radians + * @param {Number} myParameter + * @default + */ + rotation: 0, + + /** + * Describe the property that is the filter parameter + * @param {String} m + * @default + */ + mainParameter: 'rotation', + + calculateMatrix: function() { + var rad = this.rotation * Math.PI, cos = fabric.util.cos(rad), sin = fabric.util.sin(rad), + aThird = 1 / 3, aThirdSqtSin = Math.sqrt(aThird) * sin, OneMinusCos = 1 - cos; + this.matrix = [ + 1, 0, 0, 0, 0, + 0, 1, 0, 0, 0, + 0, 0, 1, 0, 0, + 0, 0, 0, 1, 0 + ]; + this.matrix[0] = cos + OneMinusCos / 3; + this.matrix[1] = aThird * OneMinusCos - aThirdSqtSin; + this.matrix[2] = aThird * OneMinusCos + aThirdSqtSin; + this.matrix[5] = aThird * OneMinusCos + aThirdSqtSin; + this.matrix[6] = cos + aThird * OneMinusCos; + this.matrix[7] = aThird * OneMinusCos - aThirdSqtSin; + this.matrix[10] = aThird * OneMinusCos - aThirdSqtSin; + this.matrix[11] = aThird * OneMinusCos + aThirdSqtSin; + this.matrix[12] = cos + aThird * OneMinusCos; + }, + + /** + * HueRotation isNeutralState implementation + * Used only in image applyFilters to discard filters that will not have an effect + * on the image + * @param {Object} options + **/ + isNeutralState: function(options) { + this.calculateMatrix(); + return filters.BaseFilter.prototype.isNeutralState.call(this, options); + }, + + /** + * Apply this filter to the input image data provided. + * + * Determines whether to use WebGL or Canvas2D based on the options.webgl flag. + * + * @param {Object} options + * @param {Number} options.passes The number of filters remaining to be executed + * @param {Boolean} options.webgl Whether to use webgl to render the filter. + * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered. + * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn. + * @param {WebGLRenderingContext} options.context The GL context used for rendering. + * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type. + */ + applyTo: function(options) { + this.calculateMatrix(); + filters.BaseFilter.prototype.applyTo.call(this, options); + }, + + }); + + /** + * Returns filter instance from an object representation + * @static + * @param {Object} object Object to create an instance from + * @param {function} [callback] to be invoked after filter creation + * @return {fabric.Image.filters.HueRotation} Instance of fabric.Image.filters.HueRotation + */ + fabric.Image.filters.HueRotation.fromObject = fabric.Image.filters.BaseFilter.fromObject; + +})(typeof exports !== 'undefined' ? exports : this); + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = { }), + clone = fabric.util.object.clone; + + if (fabric.Text) { + fabric.warn('fabric.Text is already defined'); + return; + } + + var additionalProps = + ('fontFamily fontWeight fontSize text underline overline linethrough' + + ' textAlign fontStyle lineHeight textBackgroundColor charSpacing styles' + + ' direction path pathStartOffset pathSide pathAlign').split(' '); + + /** + * Text class + * @class fabric.Text + * @extends fabric.Object + * @return {fabric.Text} thisArg + * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#text} + * @see {@link fabric.Text#initialize} for constructor definition + */ + fabric.Text = fabric.util.createClass(fabric.Object, /** @lends fabric.Text.prototype */ { + + /** + * Properties which when set cause object to change dimensions + * @type Array + * @private + */ + _dimensionAffectingProps: [ + 'fontSize', + 'fontWeight', + 'fontFamily', + 'fontStyle', + 'lineHeight', + 'text', + 'charSpacing', + 'textAlign', + 'styles', + 'path', + 'pathStartOffset', + 'pathSide', + 'pathAlign' + ], + + /** + * @private + */ + _reNewline: /\r?\n/, + + /** + * Use this regular expression to filter for whitespaces that is not a new line. + * Mostly used when text is 'justify' aligned. + * @private + */ + _reSpacesAndTabs: /[ \t\r]/g, + + /** + * Use this regular expression to filter for whitespace that is not a new line. + * Mostly used when text is 'justify' aligned. + * @private + */ + _reSpaceAndTab: /[ \t\r]/, + + /** + * Use this regular expression to filter consecutive groups of non spaces. + * Mostly used when text is 'justify' aligned. + * @private + */ + _reWords: /\S+/g, + + /** + * Type of an object + * @type String + * @default + */ + type: 'text', + /** - * Returns fabric.IText instance from an object representation - * @static - * @memberOf fabric.IText - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.IText.fromObject = function (object) { - var styles = fabric.util.stylesFromArray(object.styles, object.text); - //copy object to prevent mutation - var objCopy = Object.assign({}, object, { styles: styles }); - return fabric.Object._fromObject(fabric.IText, objCopy, { - extraParam: 'text', - }); - }; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -// extend this regex to support non english languages -const reNonWord = /[ \n\.,;!\?\-]/; -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.IText.prototype, - /** @lends fabric.IText.prototype */ { - /** - * Initializes all the interactive behavior of IText - */ - initBehavior: function () { - this.initAddedHandler(); - this.initRemovedHandler(); - this.initCursorSelectionHandlers(); - this.initDoubleClickSimulation(); - this.mouseMoveHandler = this.mouseMoveHandler.bind(this); - this.dragEnterHandler = this.dragEnterHandler.bind(this); - this.dragOverHandler = this.dragOverHandler.bind(this); - this.dragLeaveHandler = this.dragLeaveHandler.bind(this); - this.dragEndHandler = this.dragEndHandler.bind(this); - this.dropHandler = this.dropHandler.bind(this); - this.on('dragenter', this.dragEnterHandler); - this.on('dragover', this.dragOverHandler); - this.on('dragleave', this.dragLeaveHandler); - this.on('dragend', this.dragEndHandler); - this.on('drop', this.dropHandler); - }, - onDeselect: function () { - this.isEditing && this.exitEditing(); - this.selected = false; - }, - /** - * Initializes "added" event handler - */ - initAddedHandler: function () { - var _this = this; - this.on('added', function (opt) { - // make sure we listen to the canvas added event - var canvas = opt.target; - if (canvas) { - if (!canvas._hasITextHandlers) { - canvas._hasITextHandlers = true; - _this._initCanvasHandlers(canvas); - } - canvas._iTextInstances = canvas._iTextInstances || []; - canvas._iTextInstances.push(_this); - } - }); - }, - initRemovedHandler: function () { - var _this = this; - this.on('removed', function (opt) { - // make sure we listen to the canvas removed event - var canvas = opt.target; - if (canvas) { - canvas._iTextInstances = canvas._iTextInstances || []; - removeFromArray(canvas._iTextInstances, _this); - if (canvas._iTextInstances.length === 0) { - canvas._hasITextHandlers = false; - _this._removeCanvasHandlers(canvas); - } - } - }); - }, - /** - * register canvas event to manage exiting on other instances - * @private - */ - _initCanvasHandlers: function (canvas) { - canvas._mouseUpITextHandler = function () { - if (canvas._iTextInstances) { - canvas._iTextInstances.forEach(function (obj) { - obj.__isMousedown = false; - }); - } - }; - canvas.on('mouse:up', canvas._mouseUpITextHandler); - }, - /** - * remove canvas event to manage exiting on other instances - * @private - */ - _removeCanvasHandlers: function (canvas) { - canvas.off('mouse:up', canvas._mouseUpITextHandler); - }, - /** - * @private - */ - _tick: function () { - this._currentTickState = this._animateCursor(this, 1, this.cursorDuration, '_onTickComplete'); - }, - /** - * @private - */ - _animateCursor: function (obj, targetOpacity, duration, completeMethod) { - var tickState = { - isAborted: false, - abort: function () { - this.isAborted = true; - }, - }; - obj.animate('_currentCursorOpacity', targetOpacity, { - duration: duration, - onComplete: function () { - if (!tickState.isAborted) { - obj[completeMethod](); - } - }, - onChange: function () { - // we do not want to animate a selection, only cursor - if (obj.canvas && obj.selectionStart === obj.selectionEnd) { - obj.renderCursorOrSelection(); - } - }, - abort: function () { - return tickState.isAborted; - }, - }); - return tickState; - }, - /** - * @private - */ - _onTickComplete: function () { - var _this = this; - if (this._cursorTimeout1) { - clearTimeout(this._cursorTimeout1); - } - this._cursorTimeout1 = setTimeout(function () { - _this._currentTickCompleteState = _this._animateCursor(_this, 0, this.cursorDuration / 2, '_tick'); - }, 100); - }, - /** - * Initializes delayed cursor - */ - initDelayedCursor: function (restart) { - var _this = this, delay = restart ? 0 : this.cursorDelay; - this.abortCursorAnimation(); - if (delay) { - this._cursorTimeout2 = setTimeout(function () { - _this._tick(); - }, delay); - } - else { - this._tick(); - } - }, - /** - * Aborts cursor animation, clears all timeouts and clear textarea context if necessary - */ - abortCursorAnimation: function () { - var shouldClear = this._currentTickState || this._currentTickCompleteState; - this._currentTickState && this._currentTickState.abort(); - this._currentTickCompleteState && - this._currentTickCompleteState.abort(); - clearTimeout(this._cursorTimeout1); - clearTimeout(this._cursorTimeout2); - this._currentCursorOpacity = 1; - // make sure we clear context even if instance is not editing - if (shouldClear) { - this.clearContextTop(); - } - }, - /** - * Selects entire text - * @return {fabric.IText} thisArg - * @chainable - */ - selectAll: function () { - this.selectionStart = 0; - this.selectionEnd = this._text.length; - this._fireSelectionChanged(); - this._updateTextarea(); - return this; - }, - /** - * Returns selected text - * @return {String} - */ - getSelectedText: function () { - return this._text - .slice(this.selectionStart, this.selectionEnd) - .join(''); - }, - /** - * Find new selection index representing start of current word according to current selection index - * @param {Number} startFrom Current selection index - * @return {Number} New selection index - */ - findWordBoundaryLeft: function (startFrom) { - var offset = 0, index = startFrom - 1; - // remove space before cursor first - if (this._reSpace.test(this._text[index])) { - while (this._reSpace.test(this._text[index])) { - offset++; - index--; - } - } - while (/\S/.test(this._text[index]) && index > -1) { - offset++; - index--; - } - return startFrom - offset; - }, - /** - * Find new selection index representing end of current word according to current selection index - * @param {Number} startFrom Current selection index - * @return {Number} New selection index - */ - findWordBoundaryRight: function (startFrom) { - var offset = 0, index = startFrom; - // remove space after cursor first - if (this._reSpace.test(this._text[index])) { - while (this._reSpace.test(this._text[index])) { - offset++; - index++; - } - } - while (/\S/.test(this._text[index]) && index < this._text.length) { - offset++; - index++; - } - return startFrom + offset; - }, - /** - * Find new selection index representing start of current line according to current selection index - * @param {Number} startFrom Current selection index - * @return {Number} New selection index - */ - findLineBoundaryLeft: function (startFrom) { - var offset = 0, index = startFrom - 1; - while (!/\n/.test(this._text[index]) && index > -1) { - offset++; - index--; - } - return startFrom - offset; - }, - /** - * Find new selection index representing end of current line according to current selection index - * @param {Number} startFrom Current selection index - * @return {Number} New selection index - */ - findLineBoundaryRight: function (startFrom) { - var offset = 0, index = startFrom; - while (!/\n/.test(this._text[index]) && index < this._text.length) { - offset++; - index++; - } - return startFrom + offset; - }, - /** - * Finds index corresponding to beginning or end of a word - * @param {Number} selectionStart Index of a character - * @param {Number} direction 1 or -1 - * @return {Number} Index of the beginning or end of a word - */ - searchWordBoundary: function (selectionStart, direction) { - var text = this._text, index = this._reSpace.test(text[selectionStart]) - ? selectionStart - 1 - : selectionStart, _char = text[index]; - while (!reNonWord.test(_char) && index > 0 && index < text.length) { - index += direction; - _char = text[index]; - } - if (reNonWord.test(_char)) { - index += direction === 1 ? 0 : 1; - } - return index; - }, - /** - * Selects a word based on the index - * @param {Number} selectionStart Index of a character - */ - selectWord: function (selectionStart) { - selectionStart = selectionStart || this.selectionStart; - var newSelectionStart = this.searchWordBoundary(selectionStart, -1) /* search backwards */, newSelectionEnd = this.searchWordBoundary(selectionStart, 1); /* search forward */ - this.selectionStart = newSelectionStart; - this.selectionEnd = newSelectionEnd; - this._fireSelectionChanged(); - this._updateTextarea(); - this.renderCursorOrSelection(); - }, - /** - * Selects a line based on the index - * @param {Number} selectionStart Index of a character - * @return {fabric.IText} thisArg - * @chainable - */ - selectLine: function (selectionStart) { - selectionStart = selectionStart || this.selectionStart; - var newSelectionStart = this.findLineBoundaryLeft(selectionStart), newSelectionEnd = this.findLineBoundaryRight(selectionStart); - this.selectionStart = newSelectionStart; - this.selectionEnd = newSelectionEnd; - this._fireSelectionChanged(); - this._updateTextarea(); - return this; - }, - /** - * Enters editing state - * @return {fabric.IText} thisArg - * @chainable - */ - enterEditing: function (e) { - if (this.isEditing || !this.editable) { - return; - } - if (this.canvas) { - this.canvas.calcOffset(); - this.exitEditingOnOthers(this.canvas); - } - this.isEditing = true; - this.initHiddenTextarea(e); - this.hiddenTextarea.focus(); - this.hiddenTextarea.value = this.text; - this._updateTextarea(); - this._saveEditingProps(); - this._setEditingProps(); - this._textBeforeEdit = this.text; - this._tick(); - this.fire('editing:entered'); - this._fireSelectionChanged(); - if (!this.canvas) { - return this; - } - this.canvas.fire('text:editing:entered', { target: this }); - this.initMouseMoveHandler(); - this.canvas.requestRenderAll(); - return this; - }, - exitEditingOnOthers: function (canvas) { - if (canvas._iTextInstances) { - canvas._iTextInstances.forEach(function (obj) { - obj.selected = false; - if (obj.isEditing) { - obj.exitEditing(); - } - }); - } - }, - /** - * Initializes "mousemove" event handler - */ - initMouseMoveHandler: function () { - this.canvas.on('mouse:move', this.mouseMoveHandler); - }, - /** - * @private - */ - mouseMoveHandler: function (options) { - if (!this.__isMousedown || !this.isEditing) { - return; - } - // regain focus - fabric.document.activeElement !== this.hiddenTextarea && - this.hiddenTextarea.focus(); - var newSelectionStart = this.getSelectionStartFromPointer(options.e), currentStart = this.selectionStart, currentEnd = this.selectionEnd; - if ((newSelectionStart !== this.__selectionStartOnMouseDown || - currentStart === currentEnd) && - (currentStart === newSelectionStart || - currentEnd === newSelectionStart)) { - return; - } - if (newSelectionStart > this.__selectionStartOnMouseDown) { - this.selectionStart = this.__selectionStartOnMouseDown; - this.selectionEnd = newSelectionStart; - } - else { - this.selectionStart = newSelectionStart; - this.selectionEnd = this.__selectionStartOnMouseDown; - } - if (this.selectionStart !== currentStart || - this.selectionEnd !== currentEnd) { - this.restartCursorIfNeeded(); - this._fireSelectionChanged(); - this._updateTextarea(); - this.renderCursorOrSelection(); - } - }, - /** - * Override to customize the drag image - * https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer/setDragImage - * @param {DragEvent} e - * @param {object} data - * @param {number} data.selectionStart - * @param {number} data.selectionEnd - * @param {string} data.text - * @param {string} data.value selected text - */ - setDragImage: function (e, data) { - var t = this.calcTransformMatrix(); - var flipFactor = new Point(this.flipX ? -1 : 1, this.flipY ? -1 : 1); - var boundaries = this._getCursorBoundaries(data.selectionStart); - var selectionPosition = new Point(boundaries.left + boundaries.leftOffset, boundaries.top + boundaries.topOffset).multiply(flipFactor); - var pos = fabric.util.transformPoint(selectionPosition, t); - var pointer = this.canvas.getPointer(e); - var diff = pointer.subtract(pos); - var enableRetinaScaling = this.canvas._isRetinaScaling(); - var retinaScaling = this.canvas.getRetinaScaling(); - var bbox = this.getBoundingRect(true); - var correction = pos.subtract(new Point(bbox.left, bbox.top)); - var offset = correction.add(diff).scalarMultiply(retinaScaling); - // prepare instance for drag image snapshot by making all non selected text invisible - var bgc = this.backgroundColor; - var styles = fabric.util.object.clone(this.styles, true); - delete this.backgroundColor; - var styleOverride = { - fill: 'transparent', - textBackgroundColor: 'transparent', - }; - this.setSelectionStyles(styleOverride, 0, data.selectionStart); - this.setSelectionStyles(styleOverride, data.selectionEnd, data.text.length); - var dragImage = this.toCanvasElement({ - enableRetinaScaling: enableRetinaScaling, - }); - this.backgroundColor = bgc; - this.styles = styles; - // handle retina scaling - if (enableRetinaScaling && retinaScaling > 1) { - var c = fabric.util.createCanvasElement(); - c.width = dragImage.width / retinaScaling; - c.height = dragImage.height / retinaScaling; - var ctx = c.getContext('2d'); - ctx.scale(1 / retinaScaling, 1 / retinaScaling); - ctx.drawImage(dragImage, 0, 0); - dragImage = c; - } - this.__dragImageDisposer && this.__dragImageDisposer(); - this.__dragImageDisposer = function () { - dragImage.remove(); - }; - // position drag image offsecreen - fabric.util.setStyle(dragImage, { - position: 'absolute', - left: -dragImage.width + 'px', - border: 'none', - }); - fabric.document.body.appendChild(dragImage); - e.dataTransfer.setDragImage(dragImage, offset.x, offset.y); - }, - /** - * support native like text dragging - * @private - * @param {DragEvent} e - * @returns {boolean} should handle event - */ - onDragStart: function (e) { - this.__dragStartFired = true; - if (this.__isDragging) { - var selection = (this.__dragStartSelection = { - selectionStart: this.selectionStart, - selectionEnd: this.selectionEnd, - }); - var value = this._text - .slice(selection.selectionStart, selection.selectionEnd) - .join(''); - var data = Object.assign({ text: this.text, value: value }, selection); - e.dataTransfer.setData('text/plain', value); - e.dataTransfer.setData('application/fabric', JSON.stringify({ - value: value, - styles: this.getSelectionStyles(selection.selectionStart, selection.selectionEnd, true), - })); - e.dataTransfer.effectAllowed = 'copyMove'; - this.setDragImage(e, data); - } - this.abortCursorAnimation(); - return this.__isDragging; - }, - /** - * Override to customize drag and drop behavior - * @public - * @param {DragEvent} e - * @returns {boolean} - */ - canDrop: function (e) { - if (this.editable && !this.__corner) { - if (this.__isDragging && this.__dragStartSelection) { - // drag source trying to drop over itself - // allow dropping only outside of drag start selection - var index = this.getSelectionStartFromPointer(e); - var dragStartSelection = this.__dragStartSelection; - return (index < dragStartSelection.selectionStart || - index > dragStartSelection.selectionEnd); - } - return true; - } - return false; - }, - /** - * support native like text dragging - * @private - * @param {object} options - * @param {DragEvent} options.e - */ - dragEnterHandler: function (options) { - var e = options.e; - var canDrop = !e.defaultPrevented && this.canDrop(e); - if (!this.__isDraggingOver && canDrop) { - this.__isDraggingOver = true; - } - }, - /** - * support native like text dragging - * @private - * @param {object} options - * @param {DragEvent} options.e - */ - dragOverHandler: function (options) { - var e = options.e; - var canDrop = !e.defaultPrevented && this.canDrop(e); - if (!this.__isDraggingOver && canDrop) { - this.__isDraggingOver = true; - } - else if (this.__isDraggingOver && !canDrop) { - // drop state has changed - this.__isDraggingOver = false; - } - if (this.__isDraggingOver) { - // can be dropped, inform browser - e.preventDefault(); - // inform event subscribers - options.canDrop = true; - options.dropTarget = this; - // find cursor under the drag part. - } - }, - /** - * support native like text dragging - * @private - */ - dragLeaveHandler: function () { - if (this.__isDraggingOver || this.__isDragging) { - this.__isDraggingOver = false; - } - }, - /** - * support native like text dragging - * fired only on the drag source - * handle changes to the drag source in case of a drop on another object or a cancellation - * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#finishing_a_drag - * @private - * @param {object} options - * @param {DragEvent} options.e - */ - dragEndHandler: function (options) { - var e = options.e; - if (this.__isDragging && this.__dragStartFired) { - // once the drop event finishes we check if we need to change the drag source - // if the drag source received the drop we bail out - if (this.__dragStartSelection) { - var selectionStart = this.__dragStartSelection.selectionStart; - var selectionEnd = this.__dragStartSelection.selectionEnd; - var dropEffect = e.dataTransfer.dropEffect; - if (dropEffect === 'none') { - this.selectionStart = selectionStart; - this.selectionEnd = selectionEnd; - this._updateTextarea(); - } - else { - this.clearContextTop(); - if (dropEffect === 'move') { - this.insertChars('', null, selectionStart, selectionEnd); - this.selectionStart = this.selectionEnd = selectionStart; - this.hiddenTextarea && (this.hiddenTextarea.value = this.text); - this._updateTextarea(); - this.fire('changed', { - index: selectionStart, - action: 'dragend', - }); - this.canvas.fire('text:changed', { target: this }); - this.canvas.requestRenderAll(); - } - this.exitEditing(); - // disable mouse up logic - this.__lastSelected = false; - } - } - } - this.__dragImageDisposer && this.__dragImageDisposer(); - delete this.__dragImageDisposer; - delete this.__dragStartSelection; - this.__isDraggingOver = false; - }, - /** - * support native like text dragging - * - * Override the `text/plain | application/fabric` types of {@link DragEvent#dataTransfer} - * in order to change the drop value or to customize styling respectively, by listening to the `drop:before` event - * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#performing_a_drop - * @private - * @param {object} options - * @param {DragEvent} options.e - */ - dropHandler: function (options) { - var e = options.e, didDrop = e.defaultPrevented; - this.__isDraggingOver = false; - // inform browser that the drop has been accepted - e.preventDefault(); - var insert = e.dataTransfer.getData('text/plain'); - if (insert && !didDrop) { - var insertAt = this.getSelectionStartFromPointer(e); - var data = e.dataTransfer.types.includes('application/fabric') - ? JSON.parse(e.dataTransfer.getData('application/fabric')) - : {}; - var styles = data.styles; - var trailing = insert[Math.max(0, insert.length - 1)]; - var selectionStartOffset = 0; - // drag and drop in same instance - if (this.__dragStartSelection) { - var selectionStart = this.__dragStartSelection.selectionStart; - var selectionEnd = this.__dragStartSelection.selectionEnd; - if (insertAt > selectionStart && insertAt <= selectionEnd) { - insertAt = selectionStart; - } - else if (insertAt > selectionEnd) { - insertAt -= selectionEnd - selectionStart; - } - this.insertChars('', null, selectionStart, selectionEnd); - // prevent `dragend` from handling event - delete this.__dragStartSelection; - } - // remove redundant line break - if (this._reNewline.test(trailing) && - (this._reNewline.test(this._text[insertAt]) || - insertAt === this._text.length)) { - insert = insert.trimEnd(); - } - // inform subscribers - options.didDrop = true; - options.dropTarget = this; - // finalize - this.insertChars(insert, styles, insertAt); - // can this part be moved in an outside event? andrea to check. - this.canvas.setActiveObject(this); - this.enterEditing(); - this.selectionStart = Math.min(insertAt + selectionStartOffset, this._text.length); - this.selectionEnd = Math.min(this.selectionStart + insert.length, this._text.length); - this.hiddenTextarea && (this.hiddenTextarea.value = this.text); - this._updateTextarea(); - this.fire('changed', { - index: insertAt + selectionStartOffset, - action: 'drop', - }); - this.canvas.fire('text:changed', { target: this }); - this.canvas.contextTopDirty = true; - this.canvas.requestRenderAll(); - } - }, - /** - * @private - */ - _setEditingProps: function () { - this.hoverCursor = 'text'; - if (this.canvas) { - this.canvas.defaultCursor = this.canvas.moveCursor = 'text'; - } - this.borderColor = this.editingBorderColor; - this.hasControls = this.selectable = false; - this.lockMovementX = this.lockMovementY = true; - }, - /** - * convert from textarea to grapheme indexes - */ - fromStringToGraphemeSelection: function (start, end, text) { - var smallerTextStart = text.slice(0, start), graphemeStart = this.graphemeSplit(smallerTextStart).length; - if (start === end) { - return { selectionStart: graphemeStart, selectionEnd: graphemeStart }; - } - var smallerTextEnd = text.slice(start, end), graphemeEnd = this.graphemeSplit(smallerTextEnd).length; - return { - selectionStart: graphemeStart, - selectionEnd: graphemeStart + graphemeEnd, - }; - }, - /** - * convert from fabric to textarea values - */ - fromGraphemeToStringSelection: function (start, end, _text) { - var smallerTextStart = _text.slice(0, start), graphemeStart = smallerTextStart.join('').length; - if (start === end) { - return { selectionStart: graphemeStart, selectionEnd: graphemeStart }; - } - var smallerTextEnd = _text.slice(start, end), graphemeEnd = smallerTextEnd.join('').length; - return { - selectionStart: graphemeStart, - selectionEnd: graphemeStart + graphemeEnd, - }; - }, - /** - * @private - */ - _updateTextarea: function () { - this.cursorOffsetCache = {}; - if (!this.hiddenTextarea) { - return; - } - if (!this.inCompositionMode) { - var newSelection = this.fromGraphemeToStringSelection(this.selectionStart, this.selectionEnd, this._text); - this.hiddenTextarea.selectionStart = newSelection.selectionStart; - this.hiddenTextarea.selectionEnd = newSelection.selectionEnd; - } - this.updateTextareaPosition(); - }, - /** - * @private - */ - updateFromTextArea: function () { - if (!this.hiddenTextarea) { - return; - } - this.cursorOffsetCache = {}; - this.text = this.hiddenTextarea.value; - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - this.setCoords(); - } - var newSelection = this.fromStringToGraphemeSelection(this.hiddenTextarea.selectionStart, this.hiddenTextarea.selectionEnd, this.hiddenTextarea.value); - this.selectionEnd = this.selectionStart = newSelection.selectionEnd; - if (!this.inCompositionMode) { - this.selectionStart = newSelection.selectionStart; - } - this.updateTextareaPosition(); - }, - /** - * @private - */ - updateTextareaPosition: function () { - if (this.selectionStart === this.selectionEnd) { - var style = this._calcTextareaPosition(); - this.hiddenTextarea.style.left = style.left; - this.hiddenTextarea.style.top = style.top; - } - }, - /** - * @private - * @return {Object} style contains style for hiddenTextarea - */ - _calcTextareaPosition: function () { - if (!this.canvas) { - return { x: 1, y: 1 }; - } - var desiredPosition = this.inCompositionMode - ? this.compositionStart - : this.selectionStart, boundaries = this._getCursorBoundaries(desiredPosition), cursorLocation = this.get2DCursorLocation(desiredPosition), lineIndex = cursorLocation.lineIndex, charIndex = cursorLocation.charIndex, charHeight = this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize') * - this.lineHeight, leftOffset = boundaries.leftOffset, m = this.calcTransformMatrix(), p = { - x: boundaries.left + leftOffset, - y: boundaries.top + boundaries.topOffset + charHeight, - }, retinaScaling = this.canvas.getRetinaScaling(), upperCanvas = this.canvas.upperCanvasEl, upperCanvasWidth = upperCanvas.width / retinaScaling, upperCanvasHeight = upperCanvas.height / retinaScaling, maxWidth = upperCanvasWidth - charHeight, maxHeight = upperCanvasHeight - charHeight, scaleX = upperCanvas.clientWidth / upperCanvasWidth, scaleY = upperCanvas.clientHeight / upperCanvasHeight; - p = fabric.util.transformPoint(p, m); - p = fabric.util.transformPoint(p, this.canvas.viewportTransform); - p.x *= scaleX; - p.y *= scaleY; - if (p.x < 0) { - p.x = 0; - } - if (p.x > maxWidth) { - p.x = maxWidth; - } - if (p.y < 0) { - p.y = 0; - } - if (p.y > maxHeight) { - p.y = maxHeight; - } - // add canvas offset on document - p.x += this.canvas._offset.left; - p.y += this.canvas._offset.top; - return { - left: p.x + 'px', - top: p.y + 'px', - fontSize: charHeight + 'px', - charHeight: charHeight, - }; - }, - /** - * @private - */ - _saveEditingProps: function () { - this._savedProps = { - hasControls: this.hasControls, - borderColor: this.borderColor, - lockMovementX: this.lockMovementX, - lockMovementY: this.lockMovementY, - hoverCursor: this.hoverCursor, - selectable: this.selectable, - defaultCursor: this.canvas && this.canvas.defaultCursor, - moveCursor: this.canvas && this.canvas.moveCursor, - }; - }, - /** - * @private - */ - _restoreEditingProps: function () { - if (!this._savedProps) { - return; - } - this.hoverCursor = this._savedProps.hoverCursor; - this.hasControls = this._savedProps.hasControls; - this.borderColor = this._savedProps.borderColor; - this.selectable = this._savedProps.selectable; - this.lockMovementX = this._savedProps.lockMovementX; - this.lockMovementY = this._savedProps.lockMovementY; - if (this.canvas) { - this.canvas.defaultCursor = this._savedProps.defaultCursor; - this.canvas.moveCursor = this._savedProps.moveCursor; - } - delete this._savedProps; - }, - /** - * Exits from editing state - * @return {fabric.IText} thisArg - * @chainable - */ - exitEditing: function () { - var isTextChanged = this._textBeforeEdit !== this.text; - var hiddenTextarea = this.hiddenTextarea; - this.selected = false; - this.isEditing = false; - this.selectionEnd = this.selectionStart; - if (hiddenTextarea) { - hiddenTextarea.blur && hiddenTextarea.blur(); - hiddenTextarea.parentNode && - hiddenTextarea.parentNode.removeChild(hiddenTextarea); - } - this.hiddenTextarea = null; - this.abortCursorAnimation(); - this._restoreEditingProps(); - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - this.setCoords(); - } - this.fire('editing:exited'); - isTextChanged && this.fire('modified'); - if (this.canvas) { - this.canvas.off('mouse:move', this.mouseMoveHandler); - this.canvas.fire('text:editing:exited', { target: this }); - isTextChanged && - this.canvas.fire('object:modified', { target: this }); - } - return this; - }, - /** - * @private - */ - _removeExtraneousStyles: function () { - for (var prop in this.styles) { - if (!this._textLines[prop]) { - delete this.styles[prop]; - } - } - }, - /** - * remove and reflow a style block from start to end. - * @param {Number} start linear start position for removal (included in removal) - * @param {Number} end linear end position for removal ( excluded from removal ) - */ - removeStyleFromTo: function (start, end) { - var cursorStart = this.get2DCursorLocation(start, true), cursorEnd = this.get2DCursorLocation(end, true), lineStart = cursorStart.lineIndex, charStart = cursorStart.charIndex, lineEnd = cursorEnd.lineIndex, charEnd = cursorEnd.charIndex, i, styleObj; - if (lineStart !== lineEnd) { - // step1 remove the trailing of lineStart - if (this.styles[lineStart]) { - for (i = charStart; i < this._unwrappedTextLines[lineStart].length; i++) { - delete this.styles[lineStart][i]; - } - } - // step2 move the trailing of lineEnd to lineStart if needed - if (this.styles[lineEnd]) { - for (i = charEnd; i < this._unwrappedTextLines[lineEnd].length; i++) { - styleObj = this.styles[lineEnd][i]; - if (styleObj) { - this.styles[lineStart] || (this.styles[lineStart] = {}); - this.styles[lineStart][charStart + i - charEnd] = styleObj; - } - } - } - // step3 detects lines will be completely removed. - for (i = lineStart + 1; i <= lineEnd; i++) { - delete this.styles[i]; - } - // step4 shift remaining lines. - this.shiftLineStyles(lineEnd, lineStart - lineEnd); - } - else { - // remove and shift left on the same line - if (this.styles[lineStart]) { - styleObj = this.styles[lineStart]; - var diff = charEnd - charStart, numericChar, _char; - for (i = charStart; i < charEnd; i++) { - delete styleObj[i]; - } - for (_char in this.styles[lineStart]) { - numericChar = parseInt(_char, 10); - if (numericChar >= charEnd) { - styleObj[numericChar - diff] = styleObj[_char]; - delete styleObj[_char]; - } - } - } - } - }, - /** - * Shifts line styles up or down - * @param {Number} lineIndex Index of a line - * @param {Number} offset Can any number? - */ - shiftLineStyles: function (lineIndex, offset) { - // shift all line styles by offset upward or downward - // do not clone deep. we need new array, not new style objects - var clonedStyles = Object.assign({}, this.styles); - for (var line in this.styles) { - var numericLine = parseInt(line, 10); - if (numericLine > lineIndex) { - this.styles[numericLine + offset] = clonedStyles[numericLine]; - if (!clonedStyles[numericLine - offset]) { - delete this.styles[numericLine]; - } - } - } - }, - restartCursorIfNeeded: function () { - if (!this._currentTickState || - this._currentTickState.isAborted || - !this._currentTickCompleteState || - this._currentTickCompleteState.isAborted) { - this.initDelayedCursor(); - } - }, - /** - * Handle insertion of more consecutive style lines for when one or more - * newlines gets added to the text. Since current style needs to be shifted - * first we shift the current style of the number lines needed, then we add - * new lines from the last to the first. - * @param {Number} lineIndex Index of a line - * @param {Number} charIndex Index of a char - * @param {Number} qty number of lines to add - * @param {Array} copiedStyle Array of objects styles - */ - insertNewlineStyleObject: function (lineIndex, charIndex, qty, copiedStyle) { - var currentCharStyle, newLineStyles = {}, somethingAdded = false, isEndOfLine = this._unwrappedTextLines[lineIndex].length === charIndex; - qty || (qty = 1); - this.shiftLineStyles(lineIndex, qty); - if (this.styles[lineIndex]) { - currentCharStyle = - this.styles[lineIndex][charIndex === 0 ? charIndex : charIndex - 1]; - } - // we clone styles of all chars - // after cursor onto the current line - for (var index in this.styles[lineIndex]) { - var numIndex = parseInt(index, 10); - if (numIndex >= charIndex) { - somethingAdded = true; - newLineStyles[numIndex - charIndex] = this.styles[lineIndex][index]; - // remove lines from the previous line since they're on a new line now - if (!(isEndOfLine && charIndex === 0)) { - delete this.styles[lineIndex][index]; - } - } - } - var styleCarriedOver = false; - if (somethingAdded && !isEndOfLine) { - // if is end of line, the extra style we copied - // is probably not something we want - this.styles[lineIndex + qty] = newLineStyles; - styleCarriedOver = true; - } - if (styleCarriedOver) { - // skip the last line of since we already prepared it. - qty--; - } - // for the all the lines or all the other lines - // we clone current char style onto the next (otherwise empty) line - while (qty > 0) { - if (copiedStyle && copiedStyle[qty - 1]) { - this.styles[lineIndex + qty] = { - 0: Object.assign({}, copiedStyle[qty - 1]), - }; - } - else if (currentCharStyle) { - this.styles[lineIndex + qty] = { - 0: Object.assign({}, currentCharStyle), - }; - } - else { - delete this.styles[lineIndex + qty]; - } - qty--; - } - this._forceClearCache = true; - }, - /** - * Inserts style object for a given line/char index - * @param {Number} lineIndex Index of a line - * @param {Number} charIndex Index of a char - * @param {Number} quantity number Style object to insert, if given - * @param {Array} copiedStyle array of style objects - */ - insertCharStyleObject: function (lineIndex, charIndex, quantity, copiedStyle) { - if (!this.styles) { - this.styles = {}; - } - var currentLineStyles = this.styles[lineIndex], currentLineStylesCloned = currentLineStyles - ? Object.assign({}, currentLineStyles) - : {}; - quantity || (quantity = 1); - // shift all char styles by quantity forward - // 0,1,2,3 -> (charIndex=2) -> 0,1,3,4 -> (insert 2) -> 0,1,2,3,4 - for (var index in currentLineStylesCloned) { - var numericIndex = parseInt(index, 10); - if (numericIndex >= charIndex) { - currentLineStyles[numericIndex + quantity] = - currentLineStylesCloned[numericIndex]; - // only delete the style if there was nothing moved there - if (!currentLineStylesCloned[numericIndex - quantity]) { - delete currentLineStyles[numericIndex]; - } - } - } - this._forceClearCache = true; - if (copiedStyle) { - while (quantity--) { - if (!Object.keys(copiedStyle[quantity]).length) { - continue; - } - if (!this.styles[lineIndex]) { - this.styles[lineIndex] = {}; - } - this.styles[lineIndex][charIndex + quantity] = Object.assign({}, copiedStyle[quantity]); - } - return; - } - if (!currentLineStyles) { - return; - } - var newStyle = currentLineStyles[charIndex ? charIndex - 1 : 1]; - while (newStyle && quantity--) { - this.styles[lineIndex][charIndex + quantity] = Object.assign({}, newStyle); - } - }, - /** - * Inserts style object(s) - * @param {Array} insertedText Characters at the location where style is inserted - * @param {Number} start cursor index for inserting style - * @param {Array} [copiedStyle] array of style objects to insert. - */ - insertNewStyleBlock: function (insertedText, start, copiedStyle) { - var cursorLoc = this.get2DCursorLocation(start, true), addedLines = [0], linesLength = 0; - // get an array of how many char per lines are being added. - for (var i = 0; i < insertedText.length; i++) { - if (insertedText[i] === '\n') { - linesLength++; - addedLines[linesLength] = 0; - } - else { - addedLines[linesLength]++; - } - } - // for the first line copy the style from the current char position. - if (addedLines[0] > 0) { - this.insertCharStyleObject(cursorLoc.lineIndex, cursorLoc.charIndex, addedLines[0], copiedStyle); - copiedStyle = copiedStyle && copiedStyle.slice(addedLines[0] + 1); - } - linesLength && - this.insertNewlineStyleObject(cursorLoc.lineIndex, cursorLoc.charIndex + addedLines[0], linesLength); - for (var i = 1; i < linesLength; i++) { - if (addedLines[i] > 0) { - this.insertCharStyleObject(cursorLoc.lineIndex + i, 0, addedLines[i], copiedStyle); - } - else if (copiedStyle) { - // this test is required in order to close #6841 - // when a pasted buffer begins with a newline then - // this.styles[cursorLoc.lineIndex + i] and copiedStyle[0] - // may be undefined for some reason - if (this.styles[cursorLoc.lineIndex + i] && copiedStyle[0]) { - this.styles[cursorLoc.lineIndex + i][0] = copiedStyle[0]; - } - } - copiedStyle = copiedStyle && copiedStyle.slice(addedLines[i] + 1); - } - // we use i outside the loop to get it like linesLength - if (addedLines[i] > 0) { - this.insertCharStyleObject(cursorLoc.lineIndex + i, 0, addedLines[i], copiedStyle); - } - }, - /** - * Set the selectionStart and selectionEnd according to the new position of cursor - * mimic the key - mouse navigation when shift is pressed. - */ - setSelectionStartEndWithShift: function (start, end, newSelection) { - if (newSelection <= start) { - if (end === start) { - this._selectionDirection = 'left'; - } - else if (this._selectionDirection === 'right') { - this._selectionDirection = 'left'; - this.selectionEnd = start; - } - this.selectionStart = newSelection; - } - else if (newSelection > start && newSelection < end) { - if (this._selectionDirection === 'right') { - this.selectionEnd = newSelection; - } - else { - this.selectionStart = newSelection; - } - } - else { - // newSelection is > selection start and end - if (end === start) { - this._selectionDirection = 'right'; - } - else if (this._selectionDirection === 'left') { - this._selectionDirection = 'right'; - this.selectionStart = end; - } - this.selectionEnd = newSelection; - } - }, - setSelectionInBoundaries: function () { - var length = this.text.length; - if (this.selectionStart > length) { - this.selectionStart = length; - } - else if (this.selectionStart < 0) { - this.selectionStart = 0; - } - if (this.selectionEnd > length) { - this.selectionEnd = length; - } - else if (this.selectionEnd < 0) { - this.selectionEnd = 0; - } - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.IText.prototype, - /** @lends fabric.IText.prototype */ { - /** - * Initializes "dbclick" event handler - */ - initDoubleClickSimulation: function () { - // for double click - this.__lastClickTime = +new Date(); - // for triple click - this.__lastLastClickTime = +new Date(); - this.__lastPointer = {}; - this.on('mousedown', this.onMouseDown); - }, - /** - * Default event handler to simulate triple click - * @private - */ - onMouseDown: function (options) { - if (!this.canvas) { - return; - } - this.__newClickTime = +new Date(); - var newPointer = options.pointer; - if (this.isTripleClick(newPointer)) { - this.fire('tripleclick', options); - this._stopEvent(options.e); - } - this.__lastLastClickTime = this.__lastClickTime; - this.__lastClickTime = this.__newClickTime; - this.__lastPointer = newPointer; - this.__lastIsEditing = this.isEditing; - this.__lastSelected = this.selected; - }, - isTripleClick: function (newPointer) { - return (this.__newClickTime - this.__lastClickTime < 500 && - this.__lastClickTime - this.__lastLastClickTime < 500 && - this.__lastPointer.x === newPointer.x && - this.__lastPointer.y === newPointer.y); - }, - /** - * @private - */ - _stopEvent: function (e) { - e.preventDefault && e.preventDefault(); - e.stopPropagation && e.stopPropagation(); - }, - /** - * Initializes event handlers related to cursor or selection - */ - initCursorSelectionHandlers: function () { - this.initMousedownHandler(); - this.initMouseupHandler(); - this.initClicks(); - }, - /** - * Default handler for double click, select a word - */ - doubleClickHandler: function (options) { - if (!this.isEditing) { - return; - } - this.selectWord(this.getSelectionStartFromPointer(options.e)); - }, - /** - * Default handler for triple click, select a line - */ - tripleClickHandler: function (options) { - if (!this.isEditing) { - return; - } - this.selectLine(this.getSelectionStartFromPointer(options.e)); - }, - /** - * Initializes double and triple click event handlers - */ - initClicks: function () { - this.on('mousedblclick', this.doubleClickHandler); - this.on('tripleclick', this.tripleClickHandler); - }, - /** - * Default event handler for the basic functionalities needed on _mouseDown - * can be overridden to do something different. - * Scope of this implementation is: find the click position, set selectionStart - * find selectionEnd, initialize the drawing of either cursor or selection area - * initializing a mousedDown on a text area will cancel fabricjs knowledge of - * current compositionMode. It will be set to false. - */ - _mouseDownHandler: function (options) { - if (!this.canvas || - !this.editable || - (options.e.button && options.e.button !== 1)) { - return; - } - this.__isMousedown = true; - if (this.selected) { - this.inCompositionMode = false; - this.setCursorByClick(options.e); - } - if (this.isEditing) { - this.__selectionStartOnMouseDown = this.selectionStart; - if (this.selectionStart === this.selectionEnd) { - this.abortCursorAnimation(); - } - this.renderCursorOrSelection(); - } - }, - /** - * Default event handler for the basic functionalities needed on mousedown:before - * can be overridden to do something different. - * Scope of this implementation is: verify the object is already selected when mousing down - */ - _mouseDownHandlerBefore: function (options) { - if (!this.canvas || - !this.editable || - (options.e.button && options.e.button !== 1)) { - return; - } - // we want to avoid that an object that was selected and then becomes unselectable, - // may trigger editing mode in some way. - this.selected = this === this.canvas._activeObject; - // text dragging logic - var newSelection = this.getSelectionStartFromPointer(options.e); - this.__isDragging = - this.isEditing && - newSelection >= this.selectionStart && - newSelection <= this.selectionEnd && - this.selectionStart < this.selectionEnd; - }, - /** - * Initializes "mousedown" event handler - */ - initMousedownHandler: function () { - this.on('mousedown', this._mouseDownHandler); - this.on('mousedown:before', this._mouseDownHandlerBefore); - }, - /** - * Initializes "mouseup" event handler - */ - initMouseupHandler: function () { - this.on('mouseup', this.mouseUpHandler); - }, - /** - * standard handler for mouse up, overridable - * @private - */ - mouseUpHandler: function (options) { - this.__isMousedown = false; - if (!this.editable || - (this.group && !this.group.interactive) || - (options.transform && options.transform.actionPerformed) || - (options.e.button && options.e.button !== 1)) { - return; - } - if (this.canvas) { - var currentActive = this.canvas._activeObject; - if (currentActive && currentActive !== this) { - // avoid running this logic when there is an active object - // this because is possible with shift click and fast clicks, - // to rapidly deselect and reselect this object and trigger an enterEdit - return; - } - } - if (this.__lastSelected && !this.__corner) { - this.selected = false; - this.__lastSelected = false; - this.enterEditing(options.e); - if (this.selectionStart === this.selectionEnd) { - this.initDelayedCursor(true); - } - else { - this.renderCursorOrSelection(); - } - } - else { - this.selected = true; - } - }, - /** - * Changes cursor location in a text depending on passed pointer (x/y) object - * @param {Event} e Event object - */ - setCursorByClick: function (e) { - var newSelection = this.getSelectionStartFromPointer(e), start = this.selectionStart, end = this.selectionEnd; - if (e.shiftKey) { - this.setSelectionStartEndWithShift(start, end, newSelection); + * Font size (in pixels) + * @type Number + * @default + */ + fontSize: 40, + + /** + * Font weight (e.g. bold, normal, 400, 600, 800) + * @type {(Number|String)} + * @default + */ + fontWeight: 'normal', + + /** + * Font family + * @type String + * @default + */ + fontFamily: 'Times New Roman', + + /** + * Text decoration underline. + * @type Boolean + * @default + */ + underline: false, + + /** + * Text decoration overline. + * @type Boolean + * @default + */ + overline: false, + + /** + * Text decoration linethrough. + * @type Boolean + * @default + */ + linethrough: false, + + /** + * Text alignment. Possible values: "left", "center", "right", "justify", + * "justify-left", "justify-center" or "justify-right". + * @type String + * @default + */ + textAlign: 'left', + + /** + * Font style . Possible values: "", "normal", "italic" or "oblique". + * @type String + * @default + */ + fontStyle: 'normal', + + /** + * Line height + * @type Number + * @default + */ + lineHeight: 1.16, + + /** + * Superscript schema object (minimum overlap) + * @type {Object} + * @default + */ + superscript: { + size: 0.60, // fontSize factor + baseline: -0.35 // baseline-shift factor (upwards) + }, + + /** + * Subscript schema object (minimum overlap) + * @type {Object} + * @default + */ + subscript: { + size: 0.60, // fontSize factor + baseline: 0.11 // baseline-shift factor (downwards) + }, + + /** + * Background color of text lines + * @type String + * @default + */ + textBackgroundColor: '', + + /** + * List of properties to consider when checking if + * state of an object is changed ({@link fabric.Object#hasStateChanged}) + * as well as for history (undo/redo) purposes + * @type Array + */ + stateProperties: fabric.Object.prototype.stateProperties.concat(additionalProps), + + /** + * List of properties to consider when checking if cache needs refresh + * @type Array + */ + cacheProperties: fabric.Object.prototype.cacheProperties.concat(additionalProps), + + /** + * When defined, an object is rendered via stroke and this property specifies its color. + * Backwards incompatibility note: This property was named "strokeStyle" until v1.1.6 + * @type String + * @default + */ + stroke: null, + + /** + * Shadow object representing shadow of this shape. + * Backwards incompatibility note: This property was named "textShadow" (String) until v1.2.11 + * @type fabric.Shadow + * @default + */ + shadow: null, + + /** + * fabric.Path that the text should follow. + * since 4.6.0 the path will be drawn automatically. + * if you want to make the path visible, give it a stroke and strokeWidth or fill value + * if you want it to be hidden, assign visible = false to the path. + * This feature is in BETA, and SVG import/export is not yet supported. + * @type fabric.Path + * @example + * var textPath = new fabric.Text('Text on a path', { + * top: 150, + * left: 150, + * textAlign: 'center', + * charSpacing: -50, + * path: new fabric.Path('M 0 0 C 50 -100 150 -100 200 0', { + * strokeWidth: 1, + * visible: false + * }), + * pathSide: 'left', + * pathStartOffset: 0 + * }); + * @default + */ + path: null, + + /** + * Offset amount for text path starting position + * Only used when text has a path + * @type Number + * @default + */ + pathStartOffset: 0, + + /** + * Which side of the path the text should be drawn on. + * Only used when text has a path + * @type {String} 'left|right' + * @default + */ + pathSide: 'left', + + /** + * How text is aligned to the path. This property determines + * the perpendicular position of each character relative to the path. + * (one of "baseline", "center", "ascender", "descender") + * This feature is in BETA, and its behavior may change + * @type String + * @default + */ + pathAlign: 'baseline', + + /** + * @private + */ + _fontSizeFraction: 0.222, + + /** + * @private + */ + offsets: { + underline: 0.10, + linethrough: -0.315, + overline: -0.88 + }, + + /** + * Text Line proportion to font Size (in pixels) + * @type Number + * @default + */ + _fontSizeMult: 1.13, + + /** + * additional space between characters + * expressed in thousands of em unit + * @type Number + * @default + */ + charSpacing: 0, + + /** + * Object containing character styles - top-level properties -> line numbers, + * 2nd-level properties - character numbers + * @type Object + * @default + */ + styles: null, + + /** + * Reference to a context to measure text char or couple of chars + * the cacheContext of the canvas will be used or a freshly created one if the object is not on canvas + * once created it will be referenced on fabric._measuringContext to avoid creating a canvas for every + * text object created. + * @type {CanvasRenderingContext2D} + * @default + */ + _measuringContext: null, + + /** + * Baseline shift, styles only, keep at 0 for the main text object + * @type {Number} + * @default + */ + deltaY: 0, + + /** + * WARNING: EXPERIMENTAL. NOT SUPPORTED YET + * determine the direction of the text. + * This has to be set manually together with textAlign and originX for proper + * experience. + * some interesting link for the future + * https://www.w3.org/International/questions/qa-bidi-unicode-controls + * @since 4.5.0 + * @type {String} 'ltr|rtl' + * @default + */ + direction: 'ltr', + + /** + * Array of properties that define a style unit (of 'styles'). + * @type {Array} + * @default + */ + _styleProperties: [ + 'stroke', + 'strokeWidth', + 'fill', + 'fontFamily', + 'fontSize', + 'fontWeight', + 'fontStyle', + 'underline', + 'overline', + 'linethrough', + 'deltaY', + 'textBackgroundColor', + ], + + /** + * contains characters bounding boxes + */ + __charBounds: [], + + /** + * use this size when measuring text. To avoid IE11 rounding errors + * @type {Number} + * @default + * @readonly + * @private + */ + CACHE_FONT_SIZE: 400, + + /** + * contains the min text width to avoid getting 0 + * @type {Number} + * @default + */ + MIN_TEXT_WIDTH: 2, + + /** + * Constructor + * @param {String} text Text string + * @param {Object} [options] Options object + * @return {fabric.Text} thisArg + */ + initialize: function(text, options) { + this.styles = options ? (options.styles || { }) : { }; + this.text = text; + this.__skipDimension = true; + this.callSuper('initialize', options); + if (this.path) { + this.setPathInfo(); + } + this.__skipDimension = false; + this.initDimensions(); + this.setCoords(); + this.setupState({ propertySet: '_dimensionAffectingProps' }); + }, + + /** + * If text has a path, it will add the extra information needed + * for path and text calculations + * @return {fabric.Text} thisArg + */ + setPathInfo: function() { + var path = this.path; + if (path) { + path.segmentsInfo = fabric.util.getPathSegmentsInfo(path.path); + } + }, + + /** + * Return a context for measurement of text string. + * if created it gets stored for reuse + * this is for internal use, please do not use it + * @private + * @param {String} text Text string + * @param {Object} [options] Options object + * @return {fabric.Text} thisArg + */ + getMeasuringContext: function() { + // if we did not return we have to measure something. + if (!fabric._measuringContext) { + fabric._measuringContext = this.canvas && this.canvas.contextCache || + fabric.util.createCanvasElement().getContext('2d'); + } + return fabric._measuringContext; + }, + + /** + * @private + * Divides text into lines of text and lines of graphemes. + */ + _splitText: function() { + var newLines = this._splitTextIntoLines(this.text); + this.textLines = newLines.lines; + this._textLines = newLines.graphemeLines; + this._unwrappedTextLines = newLines._unwrappedLines; + this._text = newLines.graphemeText; + return newLines; + }, + + /** + * Initialize or update text dimensions. + * Updates this.width and this.height with the proper values. + * Does not return dimensions. + */ + initDimensions: function() { + if (this.__skipDimension) { + return; + } + this._splitText(); + this._clearCache(); + if (this.path) { + this.width = this.path.width; + this.height = this.path.height; + } + else { + this.width = this.calcTextWidth() || this.cursorWidth || this.MIN_TEXT_WIDTH; + this.height = this.calcTextHeight(); + } + if (this.textAlign.indexOf('justify') !== -1) { + // once text is measured we need to make space fatter to make justified text. + this.enlargeSpaces(); + } + this.saveState({ propertySet: '_dimensionAffectingProps' }); + }, + + /** + * Enlarge space boxes and shift the others + */ + enlargeSpaces: function() { + var diffSpace, currentLineWidth, numberOfSpaces, accumulatedSpace, line, charBound, spaces; + for (var i = 0, len = this._textLines.length; i < len; i++) { + if (this.textAlign !== 'justify' && (i === len - 1 || this.isEndOfWrapping(i))) { + continue; + } + accumulatedSpace = 0; + line = this._textLines[i]; + currentLineWidth = this.getLineWidth(i); + if (currentLineWidth < this.width && (spaces = this.textLines[i].match(this._reSpacesAndTabs))) { + numberOfSpaces = spaces.length; + diffSpace = (this.width - currentLineWidth) / numberOfSpaces; + for (var j = 0, jlen = line.length; j <= jlen; j++) { + charBound = this.__charBounds[i][j]; + if (this._reSpaceAndTab.test(line[j])) { + charBound.width += diffSpace; + charBound.kernedWidth += diffSpace; + charBound.left += accumulatedSpace; + accumulatedSpace += diffSpace; } else { - this.selectionStart = newSelection; - this.selectionEnd = newSelection; - } - if (this.isEditing) { - this._fireSelectionChanged(); - this._updateTextarea(); - } - }, - /** - * Returns index of a character corresponding to where an object was clicked - * @param {Event} e Event object - * @return {Number} Index of a character - */ - getSelectionStartFromPointer: function (e) { - var mouseOffset = this.getLocalPointer(e), prevWidth = 0, width = 0, height = 0, charIndex = 0, lineIndex = 0, lineLeftOffset, line; - for (var i = 0, len = this._textLines.length; i < len; i++) { - if (height <= mouseOffset.y) { - height += this.getHeightOfLine(i) * this.scaleY; - lineIndex = i; - if (i > 0) { - charIndex += - this._textLines[i - 1].length + - this.missingNewlineOffset(i - 1); - } - } - else { - break; - } + charBound.left += accumulatedSpace; } - lineLeftOffset = Math.abs(this._getLineLeftOffset(lineIndex)); - width = lineLeftOffset * this.scaleX; - line = this._textLines[lineIndex]; - // handling of RTL: in order to get things work correctly, - // we assume RTL writing is mirrored compared to LTR writing. - // so in position detection we mirror the X offset, and when is time - // of rendering it, we mirror it again. + } + } + } + }, + + /** + * Detect if the text line is ended with an hard break + * text and itext do not have wrapping, return false + * @return {Boolean} + */ + isEndOfWrapping: function(lineIndex) { + return lineIndex === this._textLines.length - 1; + }, + + /** + * Detect if a line has a linebreak and so we need to account for it when moving + * and counting style. + * It return always for text and Itext. + * @return Number + */ + missingNewlineOffset: function() { + return 1; + }, + + /** + * Returns string representation of an instance + * @return {String} String representation of text object + */ + toString: function() { + return '#'; + }, + + /** + * Return the dimension and the zoom level needed to create a cache canvas + * big enough to host the object to be cached. + * @private + * @param {Object} dim.x width of object to be cached + * @param {Object} dim.y height of object to be cached + * @return {Object}.width width of canvas + * @return {Object}.height height of canvas + * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache + * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache + */ + _getCacheCanvasDimensions: function() { + var dims = this.callSuper('_getCacheCanvasDimensions'); + var fontSize = this.fontSize; + dims.width += fontSize * dims.zoomX; + dims.height += fontSize * dims.zoomY; + return dims; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function(ctx) { + var path = this.path; + path && !path.isNotVisible() && path._render(ctx); + this._setTextStyles(ctx); + this._renderTextLinesBackground(ctx); + this._renderTextDecoration(ctx, 'underline'); + this._renderText(ctx); + this._renderTextDecoration(ctx, 'overline'); + this._renderTextDecoration(ctx, 'linethrough'); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderText: function(ctx) { + if (this.paintFirst === 'stroke') { + this._renderTextStroke(ctx); + this._renderTextFill(ctx); + } + else { + this._renderTextFill(ctx); + this._renderTextStroke(ctx); + } + }, + + /** + * Set the font parameter of the context with the object properties or with charStyle + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Object} [charStyle] object with font style properties + * @param {String} [charStyle.fontFamily] Font Family + * @param {Number} [charStyle.fontSize] Font size in pixels. ( without px suffix ) + * @param {String} [charStyle.fontWeight] Font weight + * @param {String} [charStyle.fontStyle] Font style (italic|normal) + */ + _setTextStyles: function(ctx, charStyle, forMeasuring) { + ctx.textBaseline = 'alphabetical'; + if (this.path) { + switch (this.pathAlign) { + case 'center': + ctx.textBaseline = 'middle'; + break; + case 'ascender': + ctx.textBaseline = 'top'; + break; + case 'descender': + ctx.textBaseline = 'bottom'; + break; + } + } + ctx.font = this._getFontDeclaration(charStyle, forMeasuring); + }, + + /** + * calculate and return the text Width measuring each line. + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @return {Number} Maximum width of fabric.Text object + */ + calcTextWidth: function() { + var maxWidth = this.getLineWidth(0); + + for (var i = 1, len = this._textLines.length; i < len; i++) { + var currentLineWidth = this.getLineWidth(i); + if (currentLineWidth > maxWidth) { + maxWidth = currentLineWidth; + } + } + return maxWidth; + }, + + /** + * @private + * @param {String} method Method name ("fillText" or "strokeText") + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {String} line Text to render + * @param {Number} left Left position of text + * @param {Number} top Top position of text + * @param {Number} lineIndex Index of a line in a text + */ + _renderTextLine: function(method, ctx, line, left, top, lineIndex) { + this._renderChars(method, ctx, line, left, top, lineIndex); + }, + + /** + * Renders the text background for lines, taking care of style + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderTextLinesBackground: function(ctx) { + if (!this.textBackgroundColor && !this.styleHas('textBackgroundColor')) { + return; + } + var heightOfLine, + lineLeftOffset, originalFill = ctx.fillStyle, + line, lastColor, + leftOffset = this._getLeftOffset(), + lineTopOffset = this._getTopOffset(), + boxStart = 0, boxWidth = 0, charBox, currentColor, path = this.path, + drawStart; + + for (var i = 0, len = this._textLines.length; i < len; i++) { + heightOfLine = this.getHeightOfLine(i); + if (!this.textBackgroundColor && !this.styleHas('textBackgroundColor', i)) { + lineTopOffset += heightOfLine; + continue; + } + line = this._textLines[i]; + lineLeftOffset = this._getLineLeftOffset(i); + boxWidth = 0; + boxStart = 0; + lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor'); + for (var j = 0, jlen = line.length; j < jlen; j++) { + charBox = this.__charBounds[i][j]; + currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor'); + if (path) { + ctx.save(); + ctx.translate(charBox.renderLeft, charBox.renderTop); + ctx.rotate(charBox.angle); + ctx.fillStyle = currentColor; + currentColor && ctx.fillRect( + -charBox.width / 2, + -heightOfLine / this.lineHeight * (1 - this._fontSizeFraction), + charBox.width, + heightOfLine / this.lineHeight + ); + ctx.restore(); + } + else if (currentColor !== lastColor) { + drawStart = leftOffset + lineLeftOffset + boxStart; + if (this.direction === 'rtl') { + drawStart = this.width - drawStart - boxWidth; + } + ctx.fillStyle = lastColor; + lastColor && ctx.fillRect( + drawStart, + lineTopOffset, + boxWidth, + heightOfLine / this.lineHeight + ); + boxStart = charBox.left; + boxWidth = charBox.width; + lastColor = currentColor; + } + else { + boxWidth += charBox.kernedWidth; + } + } + if (currentColor && !path) { + drawStart = leftOffset + lineLeftOffset + boxStart; + if (this.direction === 'rtl') { + drawStart = this.width - drawStart - boxWidth; + } + ctx.fillStyle = currentColor; + ctx.fillRect( + drawStart, + lineTopOffset, + boxWidth, + heightOfLine / this.lineHeight + ); + } + lineTopOffset += heightOfLine; + } + ctx.fillStyle = originalFill; + // if there is text background color no + // other shadows should be casted + this._removeShadow(ctx); + }, + + /** + * @private + * @param {Object} decl style declaration for cache + * @param {String} decl.fontFamily fontFamily + * @param {String} decl.fontStyle fontStyle + * @param {String} decl.fontWeight fontWeight + * @return {Object} reference to cache + */ + getFontCache: function(decl) { + var fontFamily = decl.fontFamily.toLowerCase(); + if (!fabric.charWidthsCache[fontFamily]) { + fabric.charWidthsCache[fontFamily] = { }; + } + var cache = fabric.charWidthsCache[fontFamily], + cacheProp = decl.fontStyle.toLowerCase() + '_' + (decl.fontWeight + '').toLowerCase(); + if (!cache[cacheProp]) { + cache[cacheProp] = { }; + } + return cache[cacheProp]; + }, + + /** + * measure and return the width of a single character. + * possibly overridden to accommodate different measure logic or + * to hook some external lib for character measurement + * @private + * @param {String} _char, char to be measured + * @param {Object} charStyle style of char to be measured + * @param {String} [previousChar] previous char + * @param {Object} [prevCharStyle] style of previous char + */ + _measureChar: function(_char, charStyle, previousChar, prevCharStyle) { + // first i try to return from cache + var fontCache = this.getFontCache(charStyle), fontDeclaration = this._getFontDeclaration(charStyle), + previousFontDeclaration = this._getFontDeclaration(prevCharStyle), couple = previousChar + _char, + stylesAreEqual = fontDeclaration === previousFontDeclaration, width, coupleWidth, previousWidth, + fontMultiplier = charStyle.fontSize / this.CACHE_FONT_SIZE, kernedWidth; + + if (previousChar && fontCache[previousChar] !== undefined) { + previousWidth = fontCache[previousChar]; + } + if (fontCache[_char] !== undefined) { + kernedWidth = width = fontCache[_char]; + } + if (stylesAreEqual && fontCache[couple] !== undefined) { + coupleWidth = fontCache[couple]; + kernedWidth = coupleWidth - previousWidth; + } + if (width === undefined || previousWidth === undefined || coupleWidth === undefined) { + var ctx = this.getMeasuringContext(); + // send a TRUE to specify measuring font size CACHE_FONT_SIZE + this._setTextStyles(ctx, charStyle, true); + } + if (width === undefined) { + kernedWidth = width = ctx.measureText(_char).width; + fontCache[_char] = width; + } + if (previousWidth === undefined && stylesAreEqual && previousChar) { + previousWidth = ctx.measureText(previousChar).width; + fontCache[previousChar] = previousWidth; + } + if (stylesAreEqual && coupleWidth === undefined) { + // we can measure the kerning couple and subtract the width of the previous character + coupleWidth = ctx.measureText(couple).width; + fontCache[couple] = coupleWidth; + kernedWidth = coupleWidth - previousWidth; + } + return { width: width * fontMultiplier, kernedWidth: kernedWidth * fontMultiplier }; + }, + + /** + * Computes height of character at given position + * @param {Number} line the line index number + * @param {Number} _char the character index number + * @return {Number} fontSize of the character + */ + getHeightOfChar: function(line, _char) { + return this.getValueOfPropertyAt(line, _char, 'fontSize'); + }, + + /** + * measure a text line measuring all characters. + * @param {Number} lineIndex line number + * @return {Number} Line width + */ + measureLine: function(lineIndex) { + var lineInfo = this._measureLine(lineIndex); + if (this.charSpacing !== 0) { + lineInfo.width -= this._getWidthOfCharSpacing(); + } + if (lineInfo.width < 0) { + lineInfo.width = 0; + } + return lineInfo; + }, + + /** + * measure every grapheme of a line, populating __charBounds + * @param {Number} lineIndex + * @return {Object} object.width total width of characters + * @return {Object} object.widthOfSpaces length of chars that match this._reSpacesAndTabs + */ + _measureLine: function(lineIndex) { + var width = 0, i, grapheme, line = this._textLines[lineIndex], prevGrapheme, + graphemeInfo, numOfSpaces = 0, lineBounds = new Array(line.length), + positionInPath = 0, startingPoint, totalPathLength, path = this.path, + reverse = this.pathSide === 'right'; + + this.__charBounds[lineIndex] = lineBounds; + for (i = 0; i < line.length; i++) { + grapheme = line[i]; + graphemeInfo = this._getGraphemeBox(grapheme, lineIndex, i, prevGrapheme); + lineBounds[i] = graphemeInfo; + width += graphemeInfo.kernedWidth; + prevGrapheme = grapheme; + } + // this latest bound box represent the last character of the line + // to simplify cursor handling in interactive mode. + lineBounds[i] = { + left: graphemeInfo ? graphemeInfo.left + graphemeInfo.width : 0, + width: 0, + kernedWidth: 0, + height: this.fontSize + }; + if (path) { + totalPathLength = path.segmentsInfo[path.segmentsInfo.length - 1].length; + startingPoint = fabric.util.getPointOnPath(path.path, 0, path.segmentsInfo); + startingPoint.x += path.pathOffset.x; + startingPoint.y += path.pathOffset.y; + switch (this.textAlign) { + case 'left': + positionInPath = reverse ? (totalPathLength - width) : 0; + break; + case 'center': + positionInPath = (totalPathLength - width) / 2; + break; + case 'right': + positionInPath = reverse ? 0 : (totalPathLength - width); + break; + //todo - add support for justify + } + positionInPath += this.pathStartOffset * (reverse ? -1 : 1); + for (i = reverse ? line.length - 1 : 0; + reverse ? i >= 0 : i < line.length; + reverse ? i-- : i++) { + graphemeInfo = lineBounds[i]; + if (positionInPath > totalPathLength) { + positionInPath %= totalPathLength; + } + else if (positionInPath < 0) { + positionInPath += totalPathLength; + } + // it would probably much faster to send all the grapheme position for a line + // and calculate path position/angle at once. + this._setGraphemeOnPath(positionInPath, graphemeInfo, startingPoint); + positionInPath += graphemeInfo.kernedWidth; + } + } + return { width: width, numOfSpaces: numOfSpaces }; + }, + + /** + * Calculate the angle and the left,top position of the char that follow a path. + * It appends it to graphemeInfo to be reused later at rendering + * @private + * @param {Number} positionInPath to be measured + * @param {Object} graphemeInfo current grapheme box information + * @param {Object} startingPoint position of the point + */ + _setGraphemeOnPath: function(positionInPath, graphemeInfo, startingPoint) { + var centerPosition = positionInPath + graphemeInfo.kernedWidth / 2, + path = this.path; + + // we are at currentPositionOnPath. we want to know what point on the path is. + var info = fabric.util.getPointOnPath(path.path, centerPosition, path.segmentsInfo); + graphemeInfo.renderLeft = info.x - startingPoint.x; + graphemeInfo.renderTop = info.y - startingPoint.y; + graphemeInfo.angle = info.angle + (this.pathSide === 'right' ? Math.PI : 0); + }, + + /** + * Measure and return the info of a single grapheme. + * needs the the info of previous graphemes already filled + * @private + * @param {String} grapheme to be measured + * @param {Number} lineIndex index of the line where the char is + * @param {Number} charIndex position in the line + * @param {String} [prevGrapheme] character preceding the one to be measured + */ + _getGraphemeBox: function(grapheme, lineIndex, charIndex, prevGrapheme, skipLeft) { + var style = this.getCompleteStyleDeclaration(lineIndex, charIndex), + prevStyle = prevGrapheme ? this.getCompleteStyleDeclaration(lineIndex, charIndex - 1) : { }, + info = this._measureChar(grapheme, style, prevGrapheme, prevStyle), + kernedWidth = info.kernedWidth, + width = info.width, charSpacing; + + if (this.charSpacing !== 0) { + charSpacing = this._getWidthOfCharSpacing(); + width += charSpacing; + kernedWidth += charSpacing; + } + + var box = { + width: width, + left: 0, + height: style.fontSize, + kernedWidth: kernedWidth, + deltaY: style.deltaY, + }; + if (charIndex > 0 && !skipLeft) { + var previousBox = this.__charBounds[lineIndex][charIndex - 1]; + box.left = previousBox.left + previousBox.width + info.kernedWidth - info.width; + } + return box; + }, + + /** + * Calculate height of line at 'lineIndex' + * @param {Number} lineIndex index of line to calculate + * @return {Number} + */ + getHeightOfLine: function(lineIndex) { + if (this.__lineHeights[lineIndex]) { + return this.__lineHeights[lineIndex]; + } + + var line = this._textLines[lineIndex], + // char 0 is measured before the line cycle because it nneds to char + // emptylines + maxHeight = this.getHeightOfChar(lineIndex, 0); + for (var i = 1, len = line.length; i < len; i++) { + maxHeight = Math.max(this.getHeightOfChar(lineIndex, i), maxHeight); + } + + return this.__lineHeights[lineIndex] = maxHeight * this.lineHeight * this._fontSizeMult; + }, + + /** + * Calculate text box height + */ + calcTextHeight: function() { + var lineHeight, height = 0; + for (var i = 0, len = this._textLines.length; i < len; i++) { + lineHeight = this.getHeightOfLine(i); + height += (i === len - 1 ? lineHeight / this.lineHeight : lineHeight); + } + return height; + }, + + /** + * @private + * @return {Number} Left offset + */ + _getLeftOffset: function() { + return this.direction === 'ltr' ? -this.width / 2 : this.width / 2; + }, + + /** + * @private + * @return {Number} Top offset + */ + _getTopOffset: function() { + return -this.height / 2; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {String} method Method name ("fillText" or "strokeText") + */ + _renderTextCommon: function(ctx, method) { + ctx.save(); + var lineHeights = 0, left = this._getLeftOffset(), top = this._getTopOffset(); + for (var i = 0, len = this._textLines.length; i < len; i++) { + var heightOfLine = this.getHeightOfLine(i), + maxHeight = heightOfLine / this.lineHeight, + leftOffset = this._getLineLeftOffset(i); + this._renderTextLine( + method, + ctx, + this._textLines[i], + left + leftOffset, + top + lineHeights + maxHeight, + i + ); + lineHeights += heightOfLine; + } + ctx.restore(); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderTextFill: function(ctx) { + if (!this.fill && !this.styleHas('fill')) { + return; + } + + this._renderTextCommon(ctx, 'fillText'); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderTextStroke: function(ctx) { + if ((!this.stroke || this.strokeWidth === 0) && this.isEmptyStyles()) { + return; + } + + if (this.shadow && !this.shadow.affectStroke) { + this._removeShadow(ctx); + } + + ctx.save(); + this._setLineDash(ctx, this.strokeDashArray); + ctx.beginPath(); + this._renderTextCommon(ctx, 'strokeText'); + ctx.closePath(); + ctx.restore(); + }, + + /** + * @private + * @param {String} method fillText or strokeText. + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Array} line Content of the line, splitted in an array by grapheme + * @param {Number} left + * @param {Number} top + * @param {Number} lineIndex + */ + _renderChars: function(method, ctx, line, left, top, lineIndex) { + // set proper line offset + var lineHeight = this.getHeightOfLine(lineIndex), + isJustify = this.textAlign.indexOf('justify') !== -1, + actualStyle, + nextStyle, + charsToRender = '', + charBox, + boxWidth = 0, + timeToRender, + path = this.path, + shortCut = !isJustify && this.charSpacing === 0 && this.isEmptyStyles(lineIndex) && !path, + isLtr = this.direction === 'ltr', sign = this.direction === 'ltr' ? 1 : -1, + drawingLeft, currentDirection = ctx.canvas.getAttribute('dir'); + ctx.save(); + if (currentDirection !== this.direction) { + ctx.canvas.setAttribute('dir', isLtr ? 'ltr' : 'rtl'); + ctx.direction = isLtr ? 'ltr' : 'rtl'; + ctx.textAlign = isLtr ? 'left' : 'right'; + } + top -= lineHeight * this._fontSizeFraction / this.lineHeight; + if (shortCut) { + // render all the line in one pass without checking + // drawingLeft = isLtr ? left : left - this.getLineWidth(lineIndex); + this._renderChar(method, ctx, lineIndex, 0, line.join(''), left, top, lineHeight); + ctx.restore(); + return; + } + for (var i = 0, len = line.length - 1; i <= len; i++) { + timeToRender = i === len || this.charSpacing || path; + charsToRender += line[i]; + charBox = this.__charBounds[lineIndex][i]; + if (boxWidth === 0) { + left += sign * (charBox.kernedWidth - charBox.width); + boxWidth += charBox.width; + } + else { + boxWidth += charBox.kernedWidth; + } + if (isJustify && !timeToRender) { + if (this._reSpaceAndTab.test(line[i])) { + timeToRender = true; + } + } + if (!timeToRender) { + // if we have charSpacing, we render char by char + actualStyle = actualStyle || this.getCompleteStyleDeclaration(lineIndex, i); + nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1); + timeToRender = this._hasStyleChanged(actualStyle, nextStyle); + } + if (timeToRender) { + if (path) { + ctx.save(); + ctx.translate(charBox.renderLeft, charBox.renderTop); + ctx.rotate(charBox.angle); + this._renderChar(method, ctx, lineIndex, i, charsToRender, -boxWidth / 2, 0, lineHeight); + ctx.restore(); + } + else { + drawingLeft = left; + this._renderChar(method, ctx, lineIndex, i, charsToRender, drawingLeft, top, lineHeight); + } + charsToRender = ''; + actualStyle = nextStyle; + left += sign * boxWidth; + boxWidth = 0; + } + } + ctx.restore(); + }, + + /** + * This function try to patch the missing gradientTransform on canvas gradients. + * transforming a context to transform the gradient, is going to transform the stroke too. + * we want to transform the gradient but not the stroke operation, so we create + * a transformed gradient on a pattern and then we use the pattern instead of the gradient. + * this method has drawbacks: is slow, is in low resolution, needs a patch for when the size + * is limited. + * @private + * @param {fabric.Gradient} filler a fabric gradient instance + * @return {CanvasPattern} a pattern to use as fill/stroke style + */ + _applyPatternGradientTransformText: function(filler) { + var pCanvas = fabric.util.createCanvasElement(), pCtx, + // TODO: verify compatibility with strokeUniform + width = this.width + this.strokeWidth, height = this.height + this.strokeWidth; + pCanvas.width = width; + pCanvas.height = height; + pCtx = pCanvas.getContext('2d'); + pCtx.beginPath(); pCtx.moveTo(0, 0); pCtx.lineTo(width, 0); pCtx.lineTo(width, height); + pCtx.lineTo(0, height); pCtx.closePath(); + pCtx.translate(width / 2, height / 2); + pCtx.fillStyle = filler.toLive(pCtx); + this._applyPatternGradientTransform(pCtx, filler); + pCtx.fill(); + return pCtx.createPattern(pCanvas, 'no-repeat'); + }, + + handleFiller: function(ctx, property, filler) { + var offsetX, offsetY; + if (filler.toLive) { + if (filler.gradientUnits === 'percentage' || filler.gradientTransform || filler.patternTransform) { + // need to transform gradient in a pattern. + // this is a slow process. If you are hitting this codepath, and the object + // is not using caching, you should consider switching it on. + // we need a canvas as big as the current object caching canvas. + offsetX = -this.width / 2; + offsetY = -this.height / 2; + ctx.translate(offsetX, offsetY); + ctx[property] = this._applyPatternGradientTransformText(filler); + return { offsetX: offsetX, offsetY: offsetY }; + } + else { + // is a simple gradient or pattern + ctx[property] = filler.toLive(ctx, this); + return this._applyPatternGradientTransform(ctx, filler); + } + } + else { + // is a color + ctx[property] = filler; + } + return { offsetX: 0, offsetY: 0 }; + }, + + _setStrokeStyles: function(ctx, decl) { + ctx.lineWidth = decl.strokeWidth; + ctx.lineCap = this.strokeLineCap; + ctx.lineDashOffset = this.strokeDashOffset; + ctx.lineJoin = this.strokeLineJoin; + ctx.miterLimit = this.strokeMiterLimit; + return this.handleFiller(ctx, 'strokeStyle', decl.stroke); + }, + + _setFillStyles: function(ctx, decl) { + return this.handleFiller(ctx, 'fillStyle', decl.fill); + }, + + /** + * @private + * @param {String} method + * @param {CanvasRenderingContext2D} ctx Context to render on + * @param {Number} lineIndex + * @param {Number} charIndex + * @param {String} _char + * @param {Number} left Left coordinate + * @param {Number} top Top coordinate + * @param {Number} lineHeight Height of the line + */ + _renderChar: function(method, ctx, lineIndex, charIndex, _char, left, top) { + var decl = this._getStyleDeclaration(lineIndex, charIndex), + fullDecl = this.getCompleteStyleDeclaration(lineIndex, charIndex), + shouldFill = method === 'fillText' && fullDecl.fill, + shouldStroke = method === 'strokeText' && fullDecl.stroke && fullDecl.strokeWidth, + fillOffsets, strokeOffsets; + + if (!shouldStroke && !shouldFill) { + return; + } + ctx.save(); + + shouldFill && (fillOffsets = this._setFillStyles(ctx, fullDecl)); + shouldStroke && (strokeOffsets = this._setStrokeStyles(ctx, fullDecl)); + + ctx.font = this._getFontDeclaration(fullDecl); + + + if (decl && decl.textBackgroundColor) { + this._removeShadow(ctx); + } + if (decl && decl.deltaY) { + top += decl.deltaY; + } + shouldFill && ctx.fillText(_char, left - fillOffsets.offsetX, top - fillOffsets.offsetY); + shouldStroke && ctx.strokeText(_char, left - strokeOffsets.offsetX, top - strokeOffsets.offsetY); + ctx.restore(); + }, + + /** + * Turns the character into a 'superior figure' (i.e. 'superscript') + * @param {Number} start selection start + * @param {Number} end selection end + * @returns {fabric.Text} thisArg + * @chainable + */ + setSuperscript: function(start, end) { + return this._setScript(start, end, this.superscript); + }, + + /** + * Turns the character into an 'inferior figure' (i.e. 'subscript') + * @param {Number} start selection start + * @param {Number} end selection end + * @returns {fabric.Text} thisArg + * @chainable + */ + setSubscript: function(start, end) { + return this._setScript(start, end, this.subscript); + }, + + /** + * Applies 'schema' at given position + * @private + * @param {Number} start selection start + * @param {Number} end selection end + * @param {Number} schema + * @returns {fabric.Text} thisArg + * @chainable + */ + _setScript: function(start, end, schema) { + var loc = this.get2DCursorLocation(start, true), + fontSize = this.getValueOfPropertyAt(loc.lineIndex, loc.charIndex, 'fontSize'), + dy = this.getValueOfPropertyAt(loc.lineIndex, loc.charIndex, 'deltaY'), + style = { fontSize: fontSize * schema.size, deltaY: dy + fontSize * schema.baseline }; + this.setSelectionStyles(style, start, end); + return this; + }, + + /** + * @private + * @param {Object} prevStyle + * @param {Object} thisStyle + */ + _hasStyleChanged: function(prevStyle, thisStyle) { + return prevStyle.fill !== thisStyle.fill || + prevStyle.stroke !== thisStyle.stroke || + prevStyle.strokeWidth !== thisStyle.strokeWidth || + prevStyle.fontSize !== thisStyle.fontSize || + prevStyle.fontFamily !== thisStyle.fontFamily || + prevStyle.fontWeight !== thisStyle.fontWeight || + prevStyle.fontStyle !== thisStyle.fontStyle || + prevStyle.deltaY !== thisStyle.deltaY; + }, + + /** + * @private + * @param {Object} prevStyle + * @param {Object} thisStyle + */ + _hasStyleChangedForSvg: function(prevStyle, thisStyle) { + return this._hasStyleChanged(prevStyle, thisStyle) || + prevStyle.overline !== thisStyle.overline || + prevStyle.underline !== thisStyle.underline || + prevStyle.linethrough !== thisStyle.linethrough; + }, + + /** + * @private + * @param {Number} lineIndex index text line + * @return {Number} Line left offset + */ + _getLineLeftOffset: function(lineIndex) { + var lineWidth = this.getLineWidth(lineIndex), + lineDiff = this.width - lineWidth, textAlign = this.textAlign, direction = this.direction, + isEndOfWrapping, leftOffset = 0, isEndOfWrapping = this.isEndOfWrapping(lineIndex); + if (textAlign === 'justify' + || (textAlign === 'justify-center' && !isEndOfWrapping) + || (textAlign === 'justify-right' && !isEndOfWrapping) + || (textAlign === 'justify-left' && !isEndOfWrapping) + ) { + return 0; + } + if (textAlign === 'center') { + leftOffset = lineDiff / 2; + } + if (textAlign === 'right') { + leftOffset = lineDiff; + } + if (textAlign === 'justify-center') { + leftOffset = lineDiff / 2; + } + if (textAlign === 'justify-right') { + leftOffset = lineDiff; + } + if (direction === 'rtl') { + leftOffset -= lineDiff; + } + return leftOffset; + }, + + /** + * @private + */ + _clearCache: function() { + this.__lineWidths = []; + this.__lineHeights = []; + this.__charBounds = []; + }, + + /** + * @private + */ + _shouldClearDimensionCache: function() { + var shouldClear = this._forceClearCache; + shouldClear || (shouldClear = this.hasStateChanged('_dimensionAffectingProps')); + if (shouldClear) { + this.dirty = true; + this._forceClearCache = false; + } + return shouldClear; + }, + + /** + * Measure a single line given its index. Used to calculate the initial + * text bounding box. The values are calculated and stored in __lineWidths cache. + * @private + * @param {Number} lineIndex line number + * @return {Number} Line width + */ + getLineWidth: function(lineIndex) { + if (this.__lineWidths[lineIndex] !== undefined) { + return this.__lineWidths[lineIndex]; + } + + var lineInfo = this.measureLine(lineIndex); + var width = lineInfo.width; + this.__lineWidths[lineIndex] = width; + return width; + }, + + _getWidthOfCharSpacing: function() { + if (this.charSpacing !== 0) { + return this.fontSize * this.charSpacing / 1000; + } + return 0; + }, + + /** + * Retrieves the value of property at given character position + * @param {Number} lineIndex the line number + * @param {Number} charIndex the character number + * @param {String} property the property name + * @returns the value of 'property' + */ + getValueOfPropertyAt: function(lineIndex, charIndex, property) { + var charStyle = this._getStyleDeclaration(lineIndex, charIndex); + if (charStyle && typeof charStyle[property] !== 'undefined') { + return charStyle[property]; + } + return this[property]; + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _renderTextDecoration: function(ctx, type) { + if (!this[type] && !this.styleHas(type)) { + return; + } + var heightOfLine, size, _size, + lineLeftOffset, dy, _dy, + line, lastDecoration, + leftOffset = this._getLeftOffset(), + topOffset = this._getTopOffset(), top, + boxStart, boxWidth, charBox, currentDecoration, + maxHeight, currentFill, lastFill, path = this.path, + charSpacing = this._getWidthOfCharSpacing(), + offsetY = this.offsets[type]; + + for (var i = 0, len = this._textLines.length; i < len; i++) { + heightOfLine = this.getHeightOfLine(i); + if (!this[type] && !this.styleHas(type, i)) { + topOffset += heightOfLine; + continue; + } + line = this._textLines[i]; + maxHeight = heightOfLine / this.lineHeight; + lineLeftOffset = this._getLineLeftOffset(i); + boxStart = 0; + boxWidth = 0; + lastDecoration = this.getValueOfPropertyAt(i, 0, type); + lastFill = this.getValueOfPropertyAt(i, 0, 'fill'); + top = topOffset + maxHeight * (1 - this._fontSizeFraction); + size = this.getHeightOfChar(i, 0); + dy = this.getValueOfPropertyAt(i, 0, 'deltaY'); + for (var j = 0, jlen = line.length; j < jlen; j++) { + charBox = this.__charBounds[i][j]; + currentDecoration = this.getValueOfPropertyAt(i, j, type); + currentFill = this.getValueOfPropertyAt(i, j, 'fill'); + _size = this.getHeightOfChar(i, j); + _dy = this.getValueOfPropertyAt(i, j, 'deltaY'); + if (path && currentDecoration && currentFill) { + ctx.save(); + ctx.fillStyle = lastFill; + ctx.translate(charBox.renderLeft, charBox.renderTop); + ctx.rotate(charBox.angle); + ctx.fillRect( + -charBox.kernedWidth / 2, + offsetY * _size + _dy, + charBox.kernedWidth, + this.fontSize / 15 + ); + ctx.restore(); + } + else if ( + (currentDecoration !== lastDecoration || currentFill !== lastFill || _size !== size || _dy !== dy) + && boxWidth > 0 + ) { + var drawStart = leftOffset + lineLeftOffset + boxStart; if (this.direction === 'rtl') { - mouseOffset.x = this.width * this.scaleX - mouseOffset.x; - } - for (var j = 0, jlen = line.length; j < jlen; j++) { - prevWidth = width; - // i removed something about flipX here, check. - width += this.__charBounds[lineIndex][j].kernedWidth * this.scaleX; - if (width <= mouseOffset.x) { - charIndex++; - } - else { - break; - } - } - return this._getNewSelectionStartFromOffset(mouseOffset, prevWidth, width, charIndex, jlen); - }, - /** - * @private - */ - _getNewSelectionStartFromOffset: function (mouseOffset, prevWidth, width, index, jlen) { - // we need Math.abs because when width is after the last char, the offset is given as 1, while is 0 - var distanceBtwLastCharAndCursor = mouseOffset.x - prevWidth, distanceBtwNextCharAndCursor = width - mouseOffset.x, offset = distanceBtwNextCharAndCursor > distanceBtwLastCharAndCursor || - distanceBtwNextCharAndCursor < 0 - ? 0 - : 1, newSelectionStart = index + offset; - // if object is horizontally flipped, mirror cursor location from the end - if (this.flipX) { - newSelectionStart = jlen - newSelectionStart; - } - if (newSelectionStart > this._text.length) { - newSelectionStart = this._text.length; - } - return newSelectionStart; - }, - }); -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric; - fabric.util.object.extend(fabric.IText.prototype, - /** @lends fabric.IText.prototype */ { - /** - * Initializes hidden textarea (needed to bring up keyboard in iOS) - */ - initHiddenTextarea: function () { - this.hiddenTextarea = fabric.document.createElement('textarea'); - this.hiddenTextarea.setAttribute('autocapitalize', 'off'); - this.hiddenTextarea.setAttribute('autocorrect', 'off'); - this.hiddenTextarea.setAttribute('autocomplete', 'off'); - this.hiddenTextarea.setAttribute('spellcheck', 'false'); - this.hiddenTextarea.setAttribute('data-fabric', 'textarea'); - this.hiddenTextarea.setAttribute('wrap', 'off'); - var style = this._calcTextareaPosition(); - // line-height: 1px; was removed from the style to fix this: - // https://bugs.chromium.org/p/chromium/issues/detail?id=870966 - this.hiddenTextarea.style.cssText = - 'position: absolute; top: ' + - style.top + - '; left: ' + - style.left + - '; z-index: -999; opacity: 0; width: 1px; height: 1px; font-size: 1px;' + - ' padding-top: ' + - style.fontSize + - ';'; - if (this.hiddenTextareaContainer) { - this.hiddenTextareaContainer.appendChild(this.hiddenTextarea); - } - else { - fabric.document.body.appendChild(this.hiddenTextarea); - } - fabric.util.addListener(this.hiddenTextarea, 'blur', this.blur.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'keydown', this.onKeyDown.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'keyup', this.onKeyUp.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'input', this.onInput.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'copy', this.copy.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'cut', this.copy.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'paste', this.paste.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'compositionstart', this.onCompositionStart.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'compositionupdate', this.onCompositionUpdate.bind(this)); - fabric.util.addListener(this.hiddenTextarea, 'compositionend', this.onCompositionEnd.bind(this)); - if (!this._clickHandlerInitialized && this.canvas) { - fabric.util.addListener(this.canvas.upperCanvasEl, 'click', this.onClick.bind(this)); - this._clickHandlerInitialized = true; - } - }, - /** - * For functionalities on keyDown - * Map a special key to a function of the instance/prototype - * If you need different behaviour for ESC or TAB or arrows, you have to change - * this map setting the name of a function that you build on the fabric.Itext or - * your prototype. - * the map change will affect all Instances unless you need for only some text Instances - * in that case you have to clone this object and assign your Instance. - * this.keysMap = Object.assign({}, this.keysMap); - * The function must be in fabric.Itext.prototype.myFunction And will receive event as args[0] - */ - keysMap: { - 9: 'exitEditing', - 27: 'exitEditing', - 33: 'moveCursorUp', - 34: 'moveCursorDown', - 35: 'moveCursorRight', - 36: 'moveCursorLeft', - 37: 'moveCursorLeft', - 38: 'moveCursorUp', - 39: 'moveCursorRight', - 40: 'moveCursorDown', - }, - keysMapRtl: { - 9: 'exitEditing', - 27: 'exitEditing', - 33: 'moveCursorUp', - 34: 'moveCursorDown', - 35: 'moveCursorLeft', - 36: 'moveCursorRight', - 37: 'moveCursorRight', - 38: 'moveCursorUp', - 39: 'moveCursorLeft', - 40: 'moveCursorDown', - }, - /** - * For functionalities on keyUp + ctrl || cmd - */ - ctrlKeysMapUp: { - 67: 'copy', - 88: 'cut', - }, - /** - * For functionalities on keyDown + ctrl || cmd - */ - ctrlKeysMapDown: { - 65: 'selectAll', - }, - onClick: function () { - // No need to trigger click event here, focus is enough to have the keyboard appear on Android - this.hiddenTextarea && this.hiddenTextarea.focus(); - }, - /** - * Override this method to customize cursor behavior on textbox blur - */ - blur: function () { - this.abortCursorAnimation(); - }, - /** - * Handles keydown event - * only used for arrows and combination of modifier keys. - * @param {Event} e Event object - */ - onKeyDown: function (e) { - if (!this.isEditing) { - return; - } - var keyMap = this.direction === 'rtl' ? this.keysMapRtl : this.keysMap; - if (e.keyCode in keyMap) { - this[keyMap[e.keyCode]](e); - } - else if (e.keyCode in this.ctrlKeysMapDown && - (e.ctrlKey || e.metaKey)) { - this[this.ctrlKeysMapDown[e.keyCode]](e); - } - else { - return; - } - e.stopImmediatePropagation(); - e.preventDefault(); - if (e.keyCode >= 33 && e.keyCode <= 40) { - // if i press an arrow key just update selection - this.inCompositionMode = false; - this.clearContextTop(); - this.renderCursorOrSelection(); - } - else { - this.canvas && this.canvas.requestRenderAll(); - } - }, - /** - * Handles keyup event - * We handle KeyUp because ie11 and edge have difficulties copy/pasting - * if a copy/cut event fired, keyup is dismissed - * @param {Event} e Event object - */ - onKeyUp: function (e) { - if (!this.isEditing || this._copyDone || this.inCompositionMode) { - this._copyDone = false; - return; - } - if (e.keyCode in this.ctrlKeysMapUp && (e.ctrlKey || e.metaKey)) { - this[this.ctrlKeysMapUp[e.keyCode]](e); - } - else { - return; - } - e.stopImmediatePropagation(); - e.preventDefault(); - this.canvas && this.canvas.requestRenderAll(); - }, - /** - * Handles onInput event - * @param {Event} e Event object - */ - onInput: function (e) { - var fromPaste = this.fromPaste; - this.fromPaste = false; - e && e.stopPropagation(); - if (!this.isEditing) { - return; - } - // decisions about style changes. - var nextText = this._splitTextIntoLines(this.hiddenTextarea.value).graphemeText, charCount = this._text.length, nextCharCount = nextText.length, removedText, insertedText, charDiff = nextCharCount - charCount, selectionStart = this.selectionStart, selectionEnd = this.selectionEnd, selection = selectionStart !== selectionEnd, copiedStyle, removeFrom, removeTo; - if (this.hiddenTextarea.value === '') { - this.styles = {}; - this.updateFromTextArea(); - this.fire('changed'); - if (this.canvas) { - this.canvas.fire('text:changed', { target: this }); - this.canvas.requestRenderAll(); - } - return; - } - var textareaSelection = this.fromStringToGraphemeSelection(this.hiddenTextarea.selectionStart, this.hiddenTextarea.selectionEnd, this.hiddenTextarea.value); - var backDelete = selectionStart > textareaSelection.selectionStart; - if (selection) { - removedText = this._text.slice(selectionStart, selectionEnd); - charDiff += selectionEnd - selectionStart; - } - else if (nextCharCount < charCount) { - if (backDelete) { - removedText = this._text.slice(selectionEnd + charDiff, selectionEnd); - } - else { - removedText = this._text.slice(selectionStart, selectionStart - charDiff); - } - } - insertedText = nextText.slice(textareaSelection.selectionEnd - charDiff, textareaSelection.selectionEnd); - if (removedText && removedText.length) { - if (insertedText.length) { - // let's copy some style before deleting. - // we want to copy the style before the cursor OR the style at the cursor if selection - // is bigger than 0. - copiedStyle = this.getSelectionStyles(selectionStart, selectionStart + 1, false); - // now duplicate the style one for each inserted text. - copiedStyle = insertedText.map(function () { - // this return an array of references, but that is fine since we are - // copying the style later. - return copiedStyle[0]; - }); - } - if (selection) { - removeFrom = selectionStart; - removeTo = selectionEnd; - } - else if (backDelete) { - // detect differences between forwardDelete and backDelete - removeFrom = selectionEnd - removedText.length; - removeTo = selectionEnd; - } - else { - removeFrom = selectionEnd; - removeTo = selectionEnd + removedText.length; - } - this.removeStyleFromTo(removeFrom, removeTo); - } - if (insertedText.length) { - if (fromPaste && - insertedText.join('') === fabric.copiedText && - !config.disableStyleCopyPaste) { - copiedStyle = fabric.copiedTextStyle; - } - this.insertNewStyleBlock(insertedText, selectionStart, copiedStyle); - } - this.updateFromTextArea(); - this.fire('changed'); - if (this.canvas) { - this.canvas.fire('text:changed', { target: this }); - this.canvas.requestRenderAll(); - } - }, - /** - * Composition start - */ - onCompositionStart: function () { - this.inCompositionMode = true; - }, - /** - * Composition end - */ - onCompositionEnd: function () { - this.inCompositionMode = false; - }, - // /** - // * Composition update - // */ - onCompositionUpdate: function (e) { - this.compositionStart = e.target.selectionStart; - this.compositionEnd = e.target.selectionEnd; - this.updateTextareaPosition(); - }, - /** - * Copies selected text - * @param {Event} e Event object - */ - copy: function () { - if (this.selectionStart === this.selectionEnd) { - //do not cut-copy if no selection - return; - } - fabric.copiedText = this.getSelectedText(); - if (!config.disableStyleCopyPaste) { - fabric.copiedTextStyle = this.getSelectionStyles(this.selectionStart, this.selectionEnd, true); - } - else { - fabric.copiedTextStyle = null; - } - this._copyDone = true; - }, - /** - * Pastes text - * @param {Event} e Event object - */ - paste: function () { - this.fromPaste = true; - }, - /** - * @private - * @param {Event} e Event object - * @return {Object} Clipboard data object - */ - _getClipboardData: function (e) { - return (e && e.clipboardData) || fabric.window.clipboardData; - }, - /** - * Finds the width in pixels before the cursor on the same line - * @private - * @param {Number} lineIndex - * @param {Number} charIndex - * @return {Number} widthBeforeCursor width before cursor - */ - _getWidthBeforeCursor: function (lineIndex, charIndex) { - var widthBeforeCursor = this._getLineLeftOffset(lineIndex), bound; - if (charIndex > 0) { - bound = this.__charBounds[lineIndex][charIndex - 1]; - widthBeforeCursor += bound.left + bound.width; - } - return widthBeforeCursor; - }, - /** - * Gets start offset of a selection - * @param {Event} e Event object - * @param {Boolean} isRight - * @return {Number} - */ - getDownCursorOffset: function (e, isRight) { - var selectionProp = this._getSelectionForOffset(e, isRight), cursorLocation = this.get2DCursorLocation(selectionProp), lineIndex = cursorLocation.lineIndex; - // if on last line, down cursor goes to end of line - if (lineIndex === this._textLines.length - 1 || - e.metaKey || - e.keyCode === 34) { - // move to the end of a text - return this._text.length - selectionProp; - } - var charIndex = cursorLocation.charIndex, widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex), indexOnOtherLine = this._getIndexOnLine(lineIndex + 1, widthBeforeCursor), textAfterCursor = this._textLines[lineIndex].slice(charIndex); - return (textAfterCursor.length + - indexOnOtherLine + - 1 + - this.missingNewlineOffset(lineIndex)); - }, - /** - * private - * Helps finding if the offset should be counted from Start or End - * @param {Event} e Event object - * @param {Boolean} isRight - * @return {Number} - */ - _getSelectionForOffset: function (e, isRight) { - if (e.shiftKey && - this.selectionStart !== this.selectionEnd && - isRight) { - return this.selectionEnd; - } - else { - return this.selectionStart; - } - }, - /** - * @param {Event} e Event object - * @param {Boolean} isRight - * @return {Number} - */ - getUpCursorOffset: function (e, isRight) { - var selectionProp = this._getSelectionForOffset(e, isRight), cursorLocation = this.get2DCursorLocation(selectionProp), lineIndex = cursorLocation.lineIndex; - if (lineIndex === 0 || e.metaKey || e.keyCode === 33) { - // if on first line, up cursor goes to start of line - return -selectionProp; - } - var charIndex = cursorLocation.charIndex, widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex), indexOnOtherLine = this._getIndexOnLine(lineIndex - 1, widthBeforeCursor), textBeforeCursor = this._textLines[lineIndex].slice(0, charIndex), missingNewlineOffset = this.missingNewlineOffset(lineIndex - 1); - // return a negative offset - return (-this._textLines[lineIndex - 1].length + - indexOnOtherLine - - textBeforeCursor.length + - (1 - missingNewlineOffset)); - }, - /** - * for a given width it founds the matching character. - * @private - */ - _getIndexOnLine: function (lineIndex, width) { - var line = this._textLines[lineIndex], lineLeftOffset = this._getLineLeftOffset(lineIndex), widthOfCharsOnLine = lineLeftOffset, indexOnLine = 0, charWidth, foundMatch; - for (var j = 0, jlen = line.length; j < jlen; j++) { - charWidth = this.__charBounds[lineIndex][j].width; - widthOfCharsOnLine += charWidth; - if (widthOfCharsOnLine > width) { - foundMatch = true; - var leftEdge = widthOfCharsOnLine - charWidth, rightEdge = widthOfCharsOnLine, offsetFromLeftEdge = Math.abs(leftEdge - width), offsetFromRightEdge = Math.abs(rightEdge - width); - indexOnLine = offsetFromRightEdge < offsetFromLeftEdge ? j : j - 1; - break; - } - } - // reached end - if (!foundMatch) { - indexOnLine = line.length - 1; - } - return indexOnLine; - }, - /** - * Moves cursor down - * @param {Event} e Event object - */ - moveCursorDown: function (e) { - if (this.selectionStart >= this._text.length && - this.selectionEnd >= this._text.length) { - return; - } - this._moveCursorUpOrDown('Down', e); - }, - /** - * Moves cursor up - * @param {Event} e Event object - */ - moveCursorUp: function (e) { - if (this.selectionStart === 0 && this.selectionEnd === 0) { - return; - } - this._moveCursorUpOrDown('Up', e); - }, - /** - * Moves cursor up or down, fires the events - * @param {String} direction 'Up' or 'Down' - * @param {Event} e Event object - */ - _moveCursorUpOrDown: function (direction, e) { - // getUpCursorOffset - // getDownCursorOffset - var action = 'get' + direction + 'CursorOffset', offset = this[action](e, this._selectionDirection === 'right'); - if (e.shiftKey) { - this.moveCursorWithShift(offset); - } - else { - this.moveCursorWithoutShift(offset); - } - if (offset !== 0) { - this.setSelectionInBoundaries(); - this.abortCursorAnimation(); - this._currentCursorOpacity = 1; - this.initDelayedCursor(); - this._fireSelectionChanged(); - this._updateTextarea(); - } - }, - /** - * Moves cursor with shift - * @param {Number} offset - */ - moveCursorWithShift: function (offset) { - var newSelection = this._selectionDirection === 'left' - ? this.selectionStart + offset - : this.selectionEnd + offset; - this.setSelectionStartEndWithShift(this.selectionStart, this.selectionEnd, newSelection); - return offset !== 0; - }, - /** - * Moves cursor up without shift - * @param {Number} offset - */ - moveCursorWithoutShift: function (offset) { - if (offset < 0) { - this.selectionStart += offset; - this.selectionEnd = this.selectionStart; - } - else { - this.selectionEnd += offset; - this.selectionStart = this.selectionEnd; - } - return offset !== 0; - }, - /** - * Moves cursor left - * @param {Event} e Event object - */ - moveCursorLeft: function (e) { - if (this.selectionStart === 0 && this.selectionEnd === 0) { - return; - } - this._moveCursorLeftOrRight('Left', e); - }, - /** - * @private - * @return {Boolean} true if a change happened - */ - _move: function (e, prop, direction) { - var newValue; - if (e.altKey) { - newValue = this['findWordBoundary' + direction](this[prop]); - } - else if (e.metaKey || e.keyCode === 35 || e.keyCode === 36) { - newValue = this['findLineBoundary' + direction](this[prop]); - } - else { - this[prop] += direction === 'Left' ? -1 : 1; - return true; - } - if (typeof newValue !== 'undefined' && this[prop] !== newValue) { - this[prop] = newValue; - return true; - } - }, - /** - * @private - */ - _moveLeft: function (e, prop) { - return this._move(e, prop, 'Left'); - }, - /** - * @private - */ - _moveRight: function (e, prop) { - return this._move(e, prop, 'Right'); - }, - /** - * Moves cursor left without keeping selection - * @param {Event} e - */ - moveCursorLeftWithoutShift: function (e) { - var change = true; - this._selectionDirection = 'left'; - // only move cursor when there is no selection, - // otherwise we discard it, and leave cursor on same place - if (this.selectionEnd === this.selectionStart && - this.selectionStart !== 0) { - change = this._moveLeft(e, 'selectionStart'); - } - this.selectionEnd = this.selectionStart; - return change; - }, - /** - * Moves cursor left while keeping selection - * @param {Event} e - */ - moveCursorLeftWithShift: function (e) { - if (this._selectionDirection === 'right' && - this.selectionStart !== this.selectionEnd) { - return this._moveLeft(e, 'selectionEnd'); - } - else if (this.selectionStart !== 0) { - this._selectionDirection = 'left'; - return this._moveLeft(e, 'selectionStart'); - } - }, - /** - * Moves cursor right - * @param {Event} e Event object - */ - moveCursorRight: function (e) { - if (this.selectionStart >= this._text.length && - this.selectionEnd >= this._text.length) { - return; - } - this._moveCursorLeftOrRight('Right', e); - }, - /** - * Moves cursor right or Left, fires event - * @param {String} direction 'Left', 'Right' - * @param {Event} e Event object - */ - _moveCursorLeftOrRight: function (direction, e) { - var actionName = 'moveCursor' + direction + 'With'; - this._currentCursorOpacity = 1; - if (e.shiftKey) { - actionName += 'Shift'; - } - else { - actionName += 'outShift'; - } - if (this[actionName](e)) { - this.abortCursorAnimation(); - this.initDelayedCursor(); - this._fireSelectionChanged(); - this._updateTextarea(); - } - }, - /** - * Moves cursor right while keeping selection - * @param {Event} e - */ - moveCursorRightWithShift: function (e) { - if (this._selectionDirection === 'left' && - this.selectionStart !== this.selectionEnd) { - return this._moveRight(e, 'selectionStart'); - } - else if (this.selectionEnd !== this._text.length) { - this._selectionDirection = 'right'; - return this._moveRight(e, 'selectionEnd'); - } - }, - /** - * Moves cursor right without keeping selection - * @param {Event} e Event object - */ - moveCursorRightWithoutShift: function (e) { - var changed = true; - this._selectionDirection = 'right'; - if (this.selectionStart === this.selectionEnd) { - changed = this._moveRight(e, 'selectionStart'); - this.selectionEnd = this.selectionStart; - } - else { - this.selectionStart = this.selectionEnd; - } - return changed; - }, - /** - * Removes characters from start/end - * start/end ar per grapheme position in _text array. - * - * @param {Number} start - * @param {Number} end default to start + 1 - */ - removeChars: function (start, end) { - if (typeof end === 'undefined') { - end = start + 1; - } - this.removeStyleFromTo(start, end); - this._text.splice(start, end - start); - this.text = this._text.join(''); - this.set('dirty', true); - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - this.setCoords(); - } - this._removeExtraneousStyles(); - }, - /** - * insert characters at start position, before start position. - * start equal 1 it means the text get inserted between actual grapheme 0 and 1 - * if style array is provided, it must be as the same length of text in graphemes - * if end is provided and is bigger than start, old text is replaced. - * start/end ar per grapheme position in _text array. - * - * @param {String} text text to insert - * @param {Array} style array of style objects - * @param {Number} start - * @param {Number} end default to start + 1 - */ - insertChars: function (text, style, start, end) { - if (typeof end === 'undefined') { - end = start; + drawStart = this.width - drawStart - boxWidth; + } + if (lastDecoration && lastFill) { + ctx.fillStyle = lastFill; + ctx.fillRect( + drawStart, + top + offsetY * size + dy, + boxWidth, + this.fontSize / 15 + ); + } + boxStart = charBox.left; + boxWidth = charBox.width; + lastDecoration = currentDecoration; + lastFill = currentFill; + size = _size; + dy = _dy; + } + else { + boxWidth += charBox.kernedWidth; + } + } + var drawStart = leftOffset + lineLeftOffset + boxStart; + if (this.direction === 'rtl') { + drawStart = this.width - drawStart - boxWidth; + } + ctx.fillStyle = currentFill; + currentDecoration && currentFill && ctx.fillRect( + drawStart, + top + offsetY * size + dy, + boxWidth - charSpacing, + this.fontSize / 15 + ); + topOffset += heightOfLine; + } + // if there is text background color no + // other shadows should be casted + this._removeShadow(ctx); + }, + + /** + * return font declaration string for canvas context + * @param {Object} [styleObject] object + * @returns {String} font declaration formatted for canvas context. + */ + _getFontDeclaration: function(styleObject, forMeasuring) { + var style = styleObject || this, family = this.fontFamily, + fontIsGeneric = fabric.Text.genericFonts.indexOf(family.toLowerCase()) > -1; + var fontFamily = family === undefined || + family.indexOf('\'') > -1 || family.indexOf(',') > -1 || + family.indexOf('"') > -1 || fontIsGeneric + ? style.fontFamily : '"' + style.fontFamily + '"'; + return [ + // node-canvas needs "weight style", while browsers need "style weight" + // verify if this can be fixed in JSDOM + (fabric.isLikelyNode ? style.fontWeight : style.fontStyle), + (fabric.isLikelyNode ? style.fontStyle : style.fontWeight), + forMeasuring ? this.CACHE_FONT_SIZE + 'px' : style.fontSize + 'px', + fontFamily + ].join(' '); + }, + + /** + * Renders text instance on a specified context + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + render: function(ctx) { + // do not render if object is not visible + if (!this.visible) { + return; + } + if (this.canvas && this.canvas.skipOffscreen && !this.group && !this.isOnScreen()) { + return; + } + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + } + this.callSuper('render', ctx); + }, + + /** + * Returns the text as an array of lines. + * @param {String} text text to split + * @returns {Array} Lines in the text + */ + _splitTextIntoLines: function(text) { + var lines = text.split(this._reNewline), + newLines = new Array(lines.length), + newLine = ['\n'], + newText = []; + for (var i = 0; i < lines.length; i++) { + newLines[i] = fabric.util.string.graphemeSplit(lines[i]); + newText = newText.concat(newLines[i], newLine); + } + newText.pop(); + return { _unwrappedLines: newLines, lines: lines, graphemeText: newText, graphemeLines: newLines }; + }, + + /** + * Returns object representation of an instance + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} Object representation of an instance + */ + toObject: function(propertiesToInclude) { + var allProperties = additionalProps.concat(propertiesToInclude); + var obj = this.callSuper('toObject', allProperties); + // styles will be overridden with a properly cloned structure + obj.styles = clone(this.styles, true); + if (obj.path) { + obj.path = this.path.toObject(); + } + return obj; + }, + + /** + * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`. + * @param {String|Object} key Property name or object (if object, iterate over the object properties) + * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one) + * @return {fabric.Object} thisArg + * @chainable + */ + set: function(key, value) { + this.callSuper('set', key, value); + var needsDims = false; + var isAddingPath = false; + if (typeof key === 'object') { + for (var _key in key) { + if (_key === 'path') { + this.setPathInfo(); + } + needsDims = needsDims || this._dimensionAffectingProps.indexOf(_key) !== -1; + isAddingPath = isAddingPath || _key === 'path'; + } + } + else { + needsDims = this._dimensionAffectingProps.indexOf(key) !== -1; + isAddingPath = key === 'path'; + } + if (isAddingPath) { + this.setPathInfo(); + } + if (needsDims) { + this.initDimensions(); + this.setCoords(); + } + return this; + }, + + /** + * Returns complexity of an instance + * @return {Number} complexity + */ + complexity: function() { + return 1; + } + }); + + /* _FROM_SVG_START_ */ + /** + * List of attribute names to account for when parsing SVG element (used by {@link fabric.Text.fromElement}) + * @static + * @memberOf fabric.Text + * @see: http://www.w3.org/TR/SVG/text.html#TextElement + */ + fabric.Text.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat( + 'x y dx dy font-family font-style font-weight font-size letter-spacing text-decoration text-anchor'.split(' ')); + + /** + * Default SVG font size + * @static + * @memberOf fabric.Text + */ + fabric.Text.DEFAULT_SVG_FONT_SIZE = 16; + + /** + * Returns fabric.Text instance from an SVG element (not yet implemented) + * @static + * @memberOf fabric.Text + * @param {SVGElement} element Element to parse + * @param {Function} callback callback function invoked after parsing + * @param {Object} [options] Options object + */ + fabric.Text.fromElement = function(element, callback, options) { + if (!element) { + return callback(null); + } + + var parsedAttributes = fabric.parseAttributes(element, fabric.Text.ATTRIBUTE_NAMES), + parsedAnchor = parsedAttributes.textAnchor || 'left'; + options = fabric.util.object.extend((options ? clone(options) : { }), parsedAttributes); + + options.top = options.top || 0; + options.left = options.left || 0; + if (parsedAttributes.textDecoration) { + var textDecoration = parsedAttributes.textDecoration; + if (textDecoration.indexOf('underline') !== -1) { + options.underline = true; + } + if (textDecoration.indexOf('overline') !== -1) { + options.overline = true; + } + if (textDecoration.indexOf('line-through') !== -1) { + options.linethrough = true; + } + delete options.textDecoration; + } + if ('dx' in parsedAttributes) { + options.left += parsedAttributes.dx; + } + if ('dy' in parsedAttributes) { + options.top += parsedAttributes.dy; + } + if (!('fontSize' in options)) { + options.fontSize = fabric.Text.DEFAULT_SVG_FONT_SIZE; + } + + var textContent = ''; + + // The XML is not properly parsed in IE9 so a workaround to get + // textContent is through firstChild.data. Another workaround would be + // to convert XML loaded from a file to be converted using DOMParser (same way loadSVGFromString() does) + if (!('textContent' in element)) { + if ('firstChild' in element && element.firstChild !== null) { + if ('data' in element.firstChild && element.firstChild.data !== null) { + textContent = element.firstChild.data; + } + } + } + else { + textContent = element.textContent; + } + + textContent = textContent.replace(/^\s+|\s+$|\n+/g, '').replace(/\s+/g, ' '); + var originalStrokeWidth = options.strokeWidth; + options.strokeWidth = 0; + + var text = new fabric.Text(textContent, options), + textHeightScaleFactor = text.getScaledHeight() / text.height, + lineHeightDiff = (text.height + text.strokeWidth) * text.lineHeight - text.height, + scaledDiff = lineHeightDiff * textHeightScaleFactor, + textHeight = text.getScaledHeight() + scaledDiff, + offX = 0; + /* + Adjust positioning: + x/y attributes in SVG correspond to the bottom-left corner of text bounding box + fabric output by default at top, left. + */ + if (parsedAnchor === 'center') { + offX = text.getScaledWidth() / 2; + } + if (parsedAnchor === 'right') { + offX = text.getScaledWidth(); + } + text.set({ + left: text.left - offX, + top: text.top - (textHeight - text.fontSize * (0.07 + text._fontSizeFraction)) / text.lineHeight, + strokeWidth: typeof originalStrokeWidth !== 'undefined' ? originalStrokeWidth : 1, + }); + callback(text); + }; + /* _FROM_SVG_END_ */ + + /** + * Returns fabric.Text instance from an object representation + * @static + * @memberOf fabric.Text + * @param {Object} object plain js Object to create an instance from + * @param {Function} [callback] Callback to invoke when an fabric.Text instance is created + */ + fabric.Text.fromObject = function(object, callback) { + var objectCopy = clone(object), path = object.path; + delete objectCopy.path; + return fabric.Object._fromObject('Text', objectCopy, function(textInstance) { + if (path) { + fabric.Object._fromObject('Path', path, function(pathInstance) { + textInstance.set('path', pathInstance); + callback(textInstance); + }, 'path'); + } + else { + callback(textInstance); + } + }, 'text'); + }; + + fabric.Text.genericFonts = ['sans-serif', 'serif', 'cursive', 'fantasy', 'monospace']; + + fabric.util.createAccessors && fabric.util.createAccessors(fabric.Text); + +})(typeof exports !== 'undefined' ? exports : this); + + +(function() { + fabric.util.object.extend(fabric.Text.prototype, /** @lends fabric.Text.prototype */ { + /** + * Returns true if object has no styling or no styling in a line + * @param {Number} lineIndex , lineIndex is on wrapped lines. + * @return {Boolean} + */ + isEmptyStyles: function(lineIndex) { + if (!this.styles) { + return true; + } + if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) { + return true; + } + var obj = typeof lineIndex === 'undefined' ? this.styles : { line: this.styles[lineIndex] }; + for (var p1 in obj) { + for (var p2 in obj[p1]) { + // eslint-disable-next-line no-unused-vars + for (var p3 in obj[p1][p2]) { + return false; + } + } + } + return true; + }, + + /** + * Returns true if object has a style property or has it ina specified line + * This function is used to detect if a text will use a particular property or not. + * @param {String} property to check for + * @param {Number} lineIndex to check the style on + * @return {Boolean} + */ + styleHas: function(property, lineIndex) { + if (!this.styles || !property || property === '') { + return false; + } + if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) { + return false; + } + var obj = typeof lineIndex === 'undefined' ? this.styles : { 0: this.styles[lineIndex] }; + // eslint-disable-next-line + for (var p1 in obj) { + // eslint-disable-next-line + for (var p2 in obj[p1]) { + if (typeof obj[p1][p2][property] !== 'undefined') { + return true; + } + } + } + return false; + }, + + /** + * Check if characters in a text have a value for a property + * whose value matches the textbox's value for that property. If so, + * the character-level property is deleted. If the character + * has no other properties, then it is also deleted. Finally, + * if the line containing that character has no other characters + * then it also is deleted. + * + * @param {string} property The property to compare between characters and text. + */ + cleanStyle: function(property) { + if (!this.styles || !property || property === '') { + return false; + } + var obj = this.styles, stylesCount = 0, letterCount, stylePropertyValue, + allStyleObjectPropertiesMatch = true, graphemeCount = 0, styleObject; + // eslint-disable-next-line + for (var p1 in obj) { + letterCount = 0; + // eslint-disable-next-line + for (var p2 in obj[p1]) { + var styleObject = obj[p1][p2], + stylePropertyHasBeenSet = styleObject.hasOwnProperty(property); + + stylesCount++; + + if (stylePropertyHasBeenSet) { + if (!stylePropertyValue) { + stylePropertyValue = styleObject[property]; } - if (end > start) { - this.removeStyleFromTo(start, end); + else if (styleObject[property] !== stylePropertyValue) { + allStyleObjectPropertiesMatch = false; } - var graphemes = this.graphemeSplit(text); - this.insertNewStyleBlock(graphemes, start, style); - this._text = [].concat(this._text.slice(0, start), graphemes, this._text.slice(end)); - this.text = this._text.join(''); - this.set('dirty', true); - if (this._shouldClearDimensionCache()) { - this.initDimensions(); - this.setCoords(); + + if (styleObject[property] === this[property]) { + delete styleObject[property]; } - this._removeExtraneousStyles(); + } + else { + allStyleObjectPropertiesMatch = false; + } + + if (Object.keys(styleObject).length !== 0) { + letterCount++; + } + else { + delete obj[p1][p2]; + } + } + + if (letterCount === 0) { + delete obj[p1]; + } + } + // if every grapheme has the same style set then + // delete those styles and set it on the parent + for (var i = 0; i < this._textLines.length; i++) { + graphemeCount += this._textLines[i].length; + } + if (allStyleObjectPropertiesMatch && stylesCount === graphemeCount) { + this[property] = stylePropertyValue; + this.removeStyle(property); + } + }, + + /** + * Remove a style property or properties from all individual character styles + * in a text object. Deletes the character style object if it contains no other style + * props. Deletes a line style object if it contains no other character styles. + * + * @param {String} props The property to remove from character styles. + */ + removeStyle: function(property) { + if (!this.styles || !property || property === '') { + return; + } + var obj = this.styles, line, lineNum, charNum; + for (lineNum in obj) { + line = obj[lineNum]; + for (charNum in line) { + delete line[charNum][property]; + if (Object.keys(line[charNum]).length === 0) { + delete line[charNum]; + } + } + if (Object.keys(line).length === 0) { + delete obj[lineNum]; + } + } + }, + + /** + * @private + */ + _extendStyles: function(index, styles) { + var loc = this.get2DCursorLocation(index); + + if (!this._getLineStyle(loc.lineIndex)) { + this._setLineStyle(loc.lineIndex); + } + + if (!this._getStyleDeclaration(loc.lineIndex, loc.charIndex)) { + this._setStyleDeclaration(loc.lineIndex, loc.charIndex, {}); + } + + fabric.util.object.extend(this._getStyleDeclaration(loc.lineIndex, loc.charIndex), styles); + }, + + /** + * Returns 2d representation (lineIndex and charIndex) of cursor (or selection start) + * @param {Number} [selectionStart] Optional index. When not given, current selectionStart is used. + * @param {Boolean} [skipWrapping] consider the location for unwrapped lines. useful to manage styles. + */ + get2DCursorLocation: function(selectionStart, skipWrapping) { + if (typeof selectionStart === 'undefined') { + selectionStart = this.selectionStart; + } + var lines = skipWrapping ? this._unwrappedTextLines : this._textLines, + len = lines.length; + for (var i = 0; i < len; i++) { + if (selectionStart <= lines[i].length) { + return { + lineIndex: i, + charIndex: selectionStart + }; + } + selectionStart -= lines[i].length + this.missingNewlineOffset(i); + } + return { + lineIndex: i - 1, + charIndex: lines[i - 1].length < selectionStart ? lines[i - 1].length : selectionStart + }; + }, + + /** + * Gets style of a current selection/cursor (at the start position) + * if startIndex or endIndex are not provided, selectionStart or selectionEnd will be used. + * @param {Number} [startIndex] Start index to get styles at + * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1 + * @param {Boolean} [complete] get full style or not + * @return {Array} styles an array with one, zero or more Style objects + */ + getSelectionStyles: function(startIndex, endIndex, complete) { + if (typeof startIndex === 'undefined') { + startIndex = this.selectionStart || 0; + } + if (typeof endIndex === 'undefined') { + endIndex = this.selectionEnd || startIndex; + } + var styles = []; + for (var i = startIndex; i < endIndex; i++) { + styles.push(this.getStyleAtPosition(i, complete)); + } + return styles; + }, + + /** + * Gets style of a current selection/cursor position + * @param {Number} position to get styles at + * @param {Boolean} [complete] full style if true + * @return {Object} style Style object at a specified index + * @private + */ + getStyleAtPosition: function(position, complete) { + var loc = this.get2DCursorLocation(position), + style = complete ? this.getCompleteStyleDeclaration(loc.lineIndex, loc.charIndex) : + this._getStyleDeclaration(loc.lineIndex, loc.charIndex); + return style || {}; + }, + + /** + * Sets style of a current selection, if no selection exist, do not set anything. + * @param {Object} [styles] Styles object + * @param {Number} [startIndex] Start index to get styles at + * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1 + * @return {fabric.IText} thisArg + * @chainable + */ + setSelectionStyles: function(styles, startIndex, endIndex) { + if (typeof startIndex === 'undefined') { + startIndex = this.selectionStart || 0; + } + if (typeof endIndex === 'undefined') { + endIndex = this.selectionEnd || startIndex; + } + for (var i = startIndex; i < endIndex; i++) { + this._extendStyles(i, styles); + } + /* not included in _extendStyles to avoid clearing cache more than once */ + this._forceClearCache = true; + return this; + }, + + /** + * get the reference, not a clone, of the style object for a given character + * @param {Number} lineIndex + * @param {Number} charIndex + * @return {Object} style object + */ + _getStyleDeclaration: function(lineIndex, charIndex) { + var lineStyle = this.styles && this.styles[lineIndex]; + if (!lineStyle) { + return null; + } + return lineStyle[charIndex]; + }, + + /** + * return a new object that contains all the style property for a character + * the object returned is newly created + * @param {Number} lineIndex of the line where the character is + * @param {Number} charIndex position of the character on the line + * @return {Object} style object + */ + getCompleteStyleDeclaration: function(lineIndex, charIndex) { + var style = this._getStyleDeclaration(lineIndex, charIndex) || { }, + styleObject = { }, prop; + for (var i = 0; i < this._styleProperties.length; i++) { + prop = this._styleProperties[i]; + styleObject[prop] = typeof style[prop] === 'undefined' ? this[prop] : style[prop]; + } + return styleObject; + }, + + /** + * @param {Number} lineIndex + * @param {Number} charIndex + * @param {Object} style + * @private + */ + _setStyleDeclaration: function(lineIndex, charIndex, style) { + this.styles[lineIndex][charIndex] = style; + }, + + /** + * + * @param {Number} lineIndex + * @param {Number} charIndex + * @private + */ + _deleteStyleDeclaration: function(lineIndex, charIndex) { + delete this.styles[lineIndex][charIndex]; + }, + + /** + * @param {Number} lineIndex + * @return {Boolean} if the line exists or not + * @private + */ + _getLineStyle: function(lineIndex) { + return !!this.styles[lineIndex]; + }, + + /** + * Set the line style to an empty object so that is initialized + * @param {Number} lineIndex + * @private + */ + _setLineStyle: function(lineIndex) { + this.styles[lineIndex] = {}; + }, + + /** + * @param {Number} lineIndex + * @private + */ + _deleteLineStyle: function(lineIndex) { + delete this.styles[lineIndex]; + } + }); +})(); + + +(function() { + + function parseDecoration(object) { + if (object.textDecoration) { + object.textDecoration.indexOf('underline') > -1 && (object.underline = true); + object.textDecoration.indexOf('line-through') > -1 && (object.linethrough = true); + object.textDecoration.indexOf('overline') > -1 && (object.overline = true); + delete object.textDecoration; + } + } + + /** + * IText class (introduced in v1.4) Events are also fired with "text:" + * prefix when observing canvas. + * @class fabric.IText + * @extends fabric.Text + * @mixes fabric.Observable + * + * @fires changed + * @fires selection:changed + * @fires editing:entered + * @fires editing:exited + * + * @return {fabric.IText} thisArg + * @see {@link fabric.IText#initialize} for constructor definition + * + *

Supported key combinations:

+ * 
+   *   Move cursor:                    left, right, up, down
+   *   Select character:               shift + left, shift + right
+   *   Select text vertically:         shift + up, shift + down
+   *   Move cursor by word:            alt + left, alt + right
+   *   Select words:                   shift + alt + left, shift + alt + right
+   *   Move cursor to line start/end:  cmd + left, cmd + right or home, end
+   *   Select till start/end of line:  cmd + shift + left, cmd + shift + right or shift + home, shift + end
+   *   Jump to start/end of text:      cmd + up, cmd + down
+   *   Select till start/end of text:  cmd + shift + up, cmd + shift + down or shift + pgUp, shift + pgDown
+   *   Delete character:               backspace
+   *   Delete word:                    alt + backspace
+   *   Delete line:                    cmd + backspace
+   *   Forward delete:                 delete
+   *   Copy text:                      ctrl/cmd + c
+   *   Paste text:                     ctrl/cmd + v
+   *   Cut text:                       ctrl/cmd + x
+   *   Select entire text:             ctrl/cmd + a
+   *   Quit editing                    tab or esc
+   *
+ * + *

Supported mouse/touch combination

+ * 
+   *   Position cursor:                click/touch
+   *   Create selection:               click/touch & drag
+   *   Create selection:               click & shift + click
+   *   Select word:                    double click
+   *   Select line:                    triple click
+   *
+ */ + fabric.IText = fabric.util.createClass(fabric.Text, fabric.Observable, /** @lends fabric.IText.prototype */ { + + /** + * Type of an object + * @type String + * @default + */ + type: 'i-text', + + /** + * Index where text selection starts (or where cursor is when there is no selection) + * @type Number + * @default + */ + selectionStart: 0, + + /** + * Index where text selection ends + * @type Number + * @default + */ + selectionEnd: 0, + + /** + * Color of text selection + * @type String + * @default + */ + selectionColor: 'rgba(17,119,255,0.3)', + + /** + * Indicates whether text is in editing mode + * @type Boolean + * @default + */ + isEditing: false, + + /** + * Indicates whether a text can be edited + * @type Boolean + * @default + */ + editable: true, + + /** + * Border color of text object while it's in editing mode + * @type String + * @default + */ + editingBorderColor: 'rgba(102,153,255,0.25)', + + /** + * Width of cursor (in px) + * @type Number + * @default + */ + cursorWidth: 2, + + /** + * Color of text cursor color in editing mode. + * if not set (default) will take color from the text. + * if set to a color value that fabric can understand, it will + * be used instead of the color of the text at the current position. + * @type String + * @default + */ + cursorColor: '', + + /** + * Delay between cursor blink (in ms) + * @type Number + * @default + */ + cursorDelay: 1000, + + /** + * Duration of cursor fadein (in ms) + * @type Number + * @default + */ + cursorDuration: 600, + + /** + * Indicates whether internal text char widths can be cached + * @type Boolean + * @default + */ + caching: true, + + /** + * DOM container to append the hiddenTextarea. + * An alternative to attaching to the document.body. + * Useful to reduce laggish redraw of the full document.body tree and + * also with modals event capturing that won't let the textarea take focus. + * @type HTMLElement + * @default + */ + hiddenTextareaContainer: null, + + /** + * @private + */ + _reSpace: /\s|\n/, + + /** + * @private + */ + _currentCursorOpacity: 0, + + /** + * @private + */ + _selectionDirection: null, + + /** + * @private + */ + _abortCursorAnimation: false, + + /** + * @private + */ + __widthOfSpace: [], + + /** + * Helps determining when the text is in composition, so that the cursor + * rendering is altered. + */ + inCompositionMode: false, + + /** + * Constructor + * @param {String} text Text string + * @param {Object} [options] Options object + * @return {fabric.IText} thisArg + */ + initialize: function(text, options) { + this.callSuper('initialize', text, options); + this.initBehavior(); + }, + + /** + * Sets selection start (left boundary of a selection) + * @param {Number} index Index to set selection start to + */ + setSelectionStart: function(index) { + index = Math.max(index, 0); + this._updateAndFire('selectionStart', index); + }, + + /** + * Sets selection end (right boundary of a selection) + * @param {Number} index Index to set selection end to + */ + setSelectionEnd: function(index) { + index = Math.min(index, this.text.length); + this._updateAndFire('selectionEnd', index); + }, + + /** + * @private + * @param {String} property 'selectionStart' or 'selectionEnd' + * @param {Number} index new position of property + */ + _updateAndFire: function(property, index) { + if (this[property] !== index) { + this._fireSelectionChanged(); + this[property] = index; + } + this._updateTextarea(); + }, + + /** + * Fires the even of selection changed + * @private + */ + _fireSelectionChanged: function() { + this.fire('selection:changed'); + this.canvas && this.canvas.fire('text:selection:changed', { target: this }); + }, + + /** + * Initialize text dimensions. Render all text on given context + * or on a offscreen canvas to get the text width with measureText. + * Updates this.width and this.height with the proper values. + * Does not return dimensions. + * @private + */ + initDimensions: function() { + this.isEditing && this.initDelayedCursor(); + this.clearContextTop(); + this.callSuper('initDimensions'); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + render: function(ctx) { + this.clearContextTop(); + this.callSuper('render', ctx); + // clear the cursorOffsetCache, so we ensure to calculate once per renderCursor + // the correct position but not at every cursor animation. + this.cursorOffsetCache = { }; + this.renderCursorOrSelection(); + }, + + /** + * @private + * @param {CanvasRenderingContext2D} ctx Context to render on + */ + _render: function(ctx) { + this.callSuper('_render', ctx); + }, + + /** + * Prepare and clean the contextTop + */ + clearContextTop: function(skipRestore) { + if (!this.isEditing || !this.canvas || !this.canvas.contextTop) { + return; + } + var ctx = this.canvas.contextTop, v = this.canvas.viewportTransform; + ctx.save(); + ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); + this.transform(ctx); + this._clearTextArea(ctx); + skipRestore || ctx.restore(); + }, + /** + * Renders cursor or selection (depending on what exists) + * it does on the contextTop. If contextTop is not available, do nothing. + */ + renderCursorOrSelection: function() { + if (!this.isEditing || !this.canvas || !this.canvas.contextTop) { + return; + } + var boundaries = this._getCursorBoundaries(), + ctx = this.canvas.contextTop; + this.clearContextTop(true); + if (this.selectionStart === this.selectionEnd) { + this.renderCursor(boundaries, ctx); + } + else { + this.renderSelection(boundaries, ctx); + } + ctx.restore(); + }, + + _clearTextArea: function(ctx) { + // we add 4 pixel, to be sure to do not leave any pixel out + var width = this.width + 4, height = this.height + 4; + ctx.clearRect(-width / 2, -height / 2, width, height); + }, + + /** + * Returns cursor boundaries (left, top, leftOffset, topOffset) + * @private + * @param {Array} chars Array of characters + * @param {String} typeOfBoundaries + */ + _getCursorBoundaries: function(position) { + + // left/top are left/top of entire text box + // leftOffset/topOffset are offset from that left/top point of a text box + + if (typeof position === 'undefined') { + position = this.selectionStart; + } + + var left = this._getLeftOffset(), + top = this._getTopOffset(), + offsets = this._getCursorBoundariesOffsets(position); + return { + left: left, + top: top, + leftOffset: offsets.left, + topOffset: offsets.top + }; + }, + + /** + * @private + */ + _getCursorBoundariesOffsets: function(position) { + if (this.cursorOffsetCache && 'top' in this.cursorOffsetCache) { + return this.cursorOffsetCache; + } + var lineLeftOffset, + lineIndex, + charIndex, + topOffset = 0, + leftOffset = 0, + boundaries, + cursorPosition = this.get2DCursorLocation(position); + charIndex = cursorPosition.charIndex; + lineIndex = cursorPosition.lineIndex; + for (var i = 0; i < lineIndex; i++) { + topOffset += this.getHeightOfLine(i); + } + lineLeftOffset = this._getLineLeftOffset(lineIndex); + var bound = this.__charBounds[lineIndex][charIndex]; + bound && (leftOffset = bound.left); + if (this.charSpacing !== 0 && charIndex === this._textLines[lineIndex].length) { + leftOffset -= this._getWidthOfCharSpacing(); + } + boundaries = { + top: topOffset, + left: lineLeftOffset + (leftOffset > 0 ? leftOffset : 0), + }; + if (this.direction === 'rtl') { + boundaries.left *= -1; + } + this.cursorOffsetCache = boundaries; + return this.cursorOffsetCache; + }, + + /** + * Renders cursor + * @param {Object} boundaries + * @param {CanvasRenderingContext2D} ctx transformed context to draw on + */ + renderCursor: function(boundaries, ctx) { + var cursorLocation = this.get2DCursorLocation(), + lineIndex = cursorLocation.lineIndex, + charIndex = cursorLocation.charIndex > 0 ? cursorLocation.charIndex - 1 : 0, + charHeight = this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize'), + multiplier = this.scaleX * this.canvas.getZoom(), + cursorWidth = this.cursorWidth / multiplier, + topOffset = boundaries.topOffset, + dy = this.getValueOfPropertyAt(lineIndex, charIndex, 'deltaY'); + topOffset += (1 - this._fontSizeFraction) * this.getHeightOfLine(lineIndex) / this.lineHeight + - charHeight * (1 - this._fontSizeFraction); + + if (this.inCompositionMode) { + this.renderSelection(boundaries, ctx); + } + ctx.fillStyle = this.cursorColor || this.getValueOfPropertyAt(lineIndex, charIndex, 'fill'); + ctx.globalAlpha = this.__isMousedown ? 1 : this._currentCursorOpacity; + ctx.fillRect( + boundaries.left + boundaries.leftOffset - cursorWidth / 2, + topOffset + boundaries.top + dy, + cursorWidth, + charHeight); + }, + + /** + * Renders text selection + * @param {Object} boundaries Object with left/top/leftOffset/topOffset + * @param {CanvasRenderingContext2D} ctx transformed context to draw on + */ + renderSelection: function(boundaries, ctx) { + + var selectionStart = this.inCompositionMode ? this.hiddenTextarea.selectionStart : this.selectionStart, + selectionEnd = this.inCompositionMode ? this.hiddenTextarea.selectionEnd : this.selectionEnd, + isJustify = this.textAlign.indexOf('justify') !== -1, + start = this.get2DCursorLocation(selectionStart), + end = this.get2DCursorLocation(selectionEnd), + startLine = start.lineIndex, + endLine = end.lineIndex, + startChar = start.charIndex < 0 ? 0 : start.charIndex, + endChar = end.charIndex < 0 ? 0 : end.charIndex; + + for (var i = startLine; i <= endLine; i++) { + var lineOffset = this._getLineLeftOffset(i) || 0, + lineHeight = this.getHeightOfLine(i), + realLineHeight = 0, boxStart = 0, boxEnd = 0; + + if (i === startLine) { + boxStart = this.__charBounds[startLine][startChar].left; + } + if (i >= startLine && i < endLine) { + boxEnd = isJustify && !this.isEndOfWrapping(i) ? this.width : this.getLineWidth(i) || 5; // WTF is this 5? + } + else if (i === endLine) { + if (endChar === 0) { + boxEnd = this.__charBounds[endLine][endChar].left; + } + else { + var charSpacing = this._getWidthOfCharSpacing(); + boxEnd = this.__charBounds[endLine][endChar - 1].left + + this.__charBounds[endLine][endChar - 1].width - charSpacing; + } + } + realLineHeight = lineHeight; + if (this.lineHeight < 1 || (i === endLine && this.lineHeight > 1)) { + lineHeight /= this.lineHeight; + } + var drawStart = boundaries.left + lineOffset + boxStart, + drawWidth = boxEnd - boxStart, + drawHeight = lineHeight, extraTop = 0; + if (this.inCompositionMode) { + ctx.fillStyle = this.compositionColor || 'black'; + drawHeight = 1; + extraTop = lineHeight; + } + else { + ctx.fillStyle = this.selectionColor; + } + if (this.direction === 'rtl') { + drawStart = this.width - drawStart - drawWidth; + } + ctx.fillRect( + drawStart, + boundaries.top + boundaries.topOffset + extraTop, + drawWidth, + drawHeight); + boundaries.topOffset += realLineHeight; + } + }, + + /** + * High level function to know the height of the cursor. + * the currentChar is the one that precedes the cursor + * Returns fontSize of char at the current cursor + * Unused from the library, is for the end user + * @return {Number} Character font size + */ + getCurrentCharFontSize: function() { + var cp = this._getCurrentCharIndex(); + return this.getValueOfPropertyAt(cp.l, cp.c, 'fontSize'); + }, + + /** + * High level function to know the color of the cursor. + * the currentChar is the one that precedes the cursor + * Returns color (fill) of char at the current cursor + * if the text object has a pattern or gradient for filler, it will return that. + * Unused by the library, is for the end user + * @return {String | fabric.Gradient | fabric.Pattern} Character color (fill) + */ + getCurrentCharColor: function() { + var cp = this._getCurrentCharIndex(); + return this.getValueOfPropertyAt(cp.l, cp.c, 'fill'); + }, + + /** + * Returns the cursor position for the getCurrent.. functions + * @private + */ + _getCurrentCharIndex: function() { + var cursorPosition = this.get2DCursorLocation(this.selectionStart, true), + charIndex = cursorPosition.charIndex > 0 ? cursorPosition.charIndex - 1 : 0; + return { l: cursorPosition.lineIndex, c: charIndex }; + } + }); + + /** + * Returns fabric.IText instance from an object representation + * @static + * @memberOf fabric.IText + * @param {Object} object Object to create an instance from + * @param {function} [callback] invoked with new instance as argument + */ + fabric.IText.fromObject = function(object, callback) { + parseDecoration(object); + if (object.styles) { + for (var i in object.styles) { + for (var j in object.styles[i]) { + parseDecoration(object.styles[i][j]); + } + } + } + fabric.Object._fromObject('IText', object, callback, 'text'); + }; +})(); + + +(function() { + + var clone = fabric.util.object.clone; + + fabric.util.object.extend(fabric.IText.prototype, /** @lends fabric.IText.prototype */ { + + /** + * Initializes all the interactive behavior of IText + */ + initBehavior: function() { + this.initAddedHandler(); + this.initRemovedHandler(); + this.initCursorSelectionHandlers(); + this.initDoubleClickSimulation(); + this.mouseMoveHandler = this.mouseMoveHandler.bind(this); + }, + + onDeselect: function() { + this.isEditing && this.exitEditing(); + this.selected = false; + }, + + /** + * Initializes "added" event handler + */ + initAddedHandler: function() { + var _this = this; + this.on('added', function() { + var canvas = _this.canvas; + if (canvas) { + if (!canvas._hasITextHandlers) { + canvas._hasITextHandlers = true; + _this._initCanvasHandlers(canvas); + } + canvas._iTextInstances = canvas._iTextInstances || []; + canvas._iTextInstances.push(_this); + } + }); + }, + + initRemovedHandler: function() { + var _this = this; + this.on('removed', function() { + var canvas = _this.canvas; + if (canvas) { + canvas._iTextInstances = canvas._iTextInstances || []; + fabric.util.removeFromArray(canvas._iTextInstances, _this); + if (canvas._iTextInstances.length === 0) { + canvas._hasITextHandlers = false; + _this._removeCanvasHandlers(canvas); + } + } + }); + }, + + /** + * register canvas event to manage exiting on other instances + * @private + */ + _initCanvasHandlers: function(canvas) { + canvas._mouseUpITextHandler = function() { + if (canvas._iTextInstances) { + canvas._iTextInstances.forEach(function(obj) { + obj.__isMousedown = false; + }); + } + }; + canvas.on('mouse:up', canvas._mouseUpITextHandler); + }, + + /** + * remove canvas event to manage exiting on other instances + * @private + */ + _removeCanvasHandlers: function(canvas) { + canvas.off('mouse:up', canvas._mouseUpITextHandler); + }, + + /** + * @private + */ + _tick: function() { + this._currentTickState = this._animateCursor(this, 1, this.cursorDuration, '_onTickComplete'); + }, + + /** + * @private + */ + _animateCursor: function(obj, targetOpacity, duration, completeMethod) { + + var tickState; + + tickState = { + isAborted: false, + abort: function() { + this.isAborted = true; }, - }); -})(typeof exports !== 'undefined' ? exports : window); + }; + + obj.animate('_currentCursorOpacity', targetOpacity, { + duration: duration, + onComplete: function() { + if (!tickState.isAborted) { + obj[completeMethod](); + } + }, + onChange: function() { + // we do not want to animate a selection, only cursor + if (obj.canvas && obj.selectionStart === obj.selectionEnd) { + obj.renderCursorOrSelection(); + } + }, + abort: function() { + return tickState.isAborted; + } + }); + return tickState; + }, + + /** + * @private + */ + _onTickComplete: function() { + + var _this = this; + + if (this._cursorTimeout1) { + clearTimeout(this._cursorTimeout1); + } + this._cursorTimeout1 = setTimeout(function() { + _this._currentTickCompleteState = _this._animateCursor(_this, 0, this.cursorDuration / 2, '_tick'); + }, 100); + }, + + /** + * Initializes delayed cursor + */ + initDelayedCursor: function(restart) { + var _this = this, + delay = restart ? 0 : this.cursorDelay; + + this.abortCursorAnimation(); + this._currentCursorOpacity = 1; + this._cursorTimeout2 = setTimeout(function() { + _this._tick(); + }, delay); + }, + + /** + * Aborts cursor animation and clears all timeouts + */ + abortCursorAnimation: function() { + var shouldClear = this._currentTickState || this._currentTickCompleteState, + canvas = this.canvas; + this._currentTickState && this._currentTickState.abort(); + this._currentTickCompleteState && this._currentTickCompleteState.abort(); + + clearTimeout(this._cursorTimeout1); + clearTimeout(this._cursorTimeout2); + + this._currentCursorOpacity = 0; + // to clear just itext area we need to transform the context + // it may not be worth it + if (shouldClear && canvas) { + canvas.clearContext(canvas.contextTop || canvas.contextContainer); + } + + }, + + /** + * Selects entire text + * @return {fabric.IText} thisArg + * @chainable + */ + selectAll: function() { + this.selectionStart = 0; + this.selectionEnd = this._text.length; + this._fireSelectionChanged(); + this._updateTextarea(); + return this; + }, + + /** + * Returns selected text + * @return {String} + */ + getSelectedText: function() { + return this._text.slice(this.selectionStart, this.selectionEnd).join(''); + }, + + /** + * Find new selection index representing start of current word according to current selection index + * @param {Number} startFrom Current selection index + * @return {Number} New selection index + */ + findWordBoundaryLeft: function(startFrom) { + var offset = 0, index = startFrom - 1; + + // remove space before cursor first + if (this._reSpace.test(this._text[index])) { + while (this._reSpace.test(this._text[index])) { + offset++; + index--; + } + } + while (/\S/.test(this._text[index]) && index > -1) { + offset++; + index--; + } + + return startFrom - offset; + }, + + /** + * Find new selection index representing end of current word according to current selection index + * @param {Number} startFrom Current selection index + * @return {Number} New selection index + */ + findWordBoundaryRight: function(startFrom) { + var offset = 0, index = startFrom; + + // remove space after cursor first + if (this._reSpace.test(this._text[index])) { + while (this._reSpace.test(this._text[index])) { + offset++; + index++; + } + } + while (/\S/.test(this._text[index]) && index < this._text.length) { + offset++; + index++; + } + + return startFrom + offset; + }, + + /** + * Find new selection index representing start of current line according to current selection index + * @param {Number} startFrom Current selection index + * @return {Number} New selection index + */ + findLineBoundaryLeft: function(startFrom) { + var offset = 0, index = startFrom - 1; + + while (!/\n/.test(this._text[index]) && index > -1) { + offset++; + index--; + } + + return startFrom - offset; + }, + + /** + * Find new selection index representing end of current line according to current selection index + * @param {Number} startFrom Current selection index + * @return {Number} New selection index + */ + findLineBoundaryRight: function(startFrom) { + var offset = 0, index = startFrom; + + while (!/\n/.test(this._text[index]) && index < this._text.length) { + offset++; + index++; + } + + return startFrom + offset; + }, + + /** + * Finds index corresponding to beginning or end of a word + * @param {Number} selectionStart Index of a character + * @param {Number} direction 1 or -1 + * @return {Number} Index of the beginning or end of a word + */ + searchWordBoundary: function(selectionStart, direction) { + var text = this._text, + index = this._reSpace.test(text[selectionStart]) ? selectionStart - 1 : selectionStart, + _char = text[index], + // wrong + reNonWord = fabric.reNonWord; + + while (!reNonWord.test(_char) && index > 0 && index < text.length) { + index += direction; + _char = text[index]; + } + if (reNonWord.test(_char)) { + index += direction === 1 ? 0 : 1; + } + return index; + }, + + /** + * Selects a word based on the index + * @param {Number} selectionStart Index of a character + */ + selectWord: function(selectionStart) { + selectionStart = selectionStart || this.selectionStart; + var newSelectionStart = this.searchWordBoundary(selectionStart, -1), /* search backwards */ + newSelectionEnd = this.searchWordBoundary(selectionStart, 1); /* search forward */ + + this.selectionStart = newSelectionStart; + this.selectionEnd = newSelectionEnd; + this._fireSelectionChanged(); + this._updateTextarea(); + this.renderCursorOrSelection(); + }, + + /** + * Selects a line based on the index + * @param {Number} selectionStart Index of a character + * @return {fabric.IText} thisArg + * @chainable + */ + selectLine: function(selectionStart) { + selectionStart = selectionStart || this.selectionStart; + var newSelectionStart = this.findLineBoundaryLeft(selectionStart), + newSelectionEnd = this.findLineBoundaryRight(selectionStart); + + this.selectionStart = newSelectionStart; + this.selectionEnd = newSelectionEnd; + this._fireSelectionChanged(); + this._updateTextarea(); + return this; + }, + + /** + * Enters editing state + * @return {fabric.IText} thisArg + * @chainable + */ + enterEditing: function(e) { + if (this.isEditing || !this.editable) { + return; + } + + if (this.canvas) { + this.canvas.calcOffset(); + this.exitEditingOnOthers(this.canvas); + } + + this.isEditing = true; + + this.initHiddenTextarea(e); + this.hiddenTextarea.focus(); + this.hiddenTextarea.value = this.text; + this._updateTextarea(); + this._saveEditingProps(); + this._setEditingProps(); + this._textBeforeEdit = this.text; + + this._tick(); + this.fire('editing:entered'); + this._fireSelectionChanged(); + if (!this.canvas) { + return this; + } + this.canvas.fire('text:editing:entered', { target: this }); + this.initMouseMoveHandler(); + this.canvas.requestRenderAll(); + return this; + }, + + exitEditingOnOthers: function(canvas) { + if (canvas._iTextInstances) { + canvas._iTextInstances.forEach(function(obj) { + obj.selected = false; + if (obj.isEditing) { + obj.exitEditing(); + } + }); + } + }, + + /** + * Initializes "mousemove" event handler + */ + initMouseMoveHandler: function() { + this.canvas.on('mouse:move', this.mouseMoveHandler); + }, + + /** + * @private + */ + mouseMoveHandler: function(options) { + if (!this.__isMousedown || !this.isEditing) { + return; + } + + var newSelectionStart = this.getSelectionStartFromPointer(options.e), + currentStart = this.selectionStart, + currentEnd = this.selectionEnd; + if ( + (newSelectionStart !== this.__selectionStartOnMouseDown || currentStart === currentEnd) + && + (currentStart === newSelectionStart || currentEnd === newSelectionStart) + ) { + return; + } + if (newSelectionStart > this.__selectionStartOnMouseDown) { + this.selectionStart = this.__selectionStartOnMouseDown; + this.selectionEnd = newSelectionStart; + } + else { + this.selectionStart = newSelectionStart; + this.selectionEnd = this.__selectionStartOnMouseDown; + } + if (this.selectionStart !== currentStart || this.selectionEnd !== currentEnd) { + this.restartCursorIfNeeded(); + this._fireSelectionChanged(); + this._updateTextarea(); + this.renderCursorOrSelection(); + } + }, + + /** + * @private + */ + _setEditingProps: function() { + this.hoverCursor = 'text'; + + if (this.canvas) { + this.canvas.defaultCursor = this.canvas.moveCursor = 'text'; + } + + this.borderColor = this.editingBorderColor; + this.hasControls = this.selectable = false; + this.lockMovementX = this.lockMovementY = true; + }, + + /** + * convert from textarea to grapheme indexes + */ + fromStringToGraphemeSelection: function(start, end, text) { + var smallerTextStart = text.slice(0, start), + graphemeStart = fabric.util.string.graphemeSplit(smallerTextStart).length; + if (start === end) { + return { selectionStart: graphemeStart, selectionEnd: graphemeStart }; + } + var smallerTextEnd = text.slice(start, end), + graphemeEnd = fabric.util.string.graphemeSplit(smallerTextEnd).length; + return { selectionStart: graphemeStart, selectionEnd: graphemeStart + graphemeEnd }; + }, + + /** + * convert from fabric to textarea values + */ + fromGraphemeToStringSelection: function(start, end, _text) { + var smallerTextStart = _text.slice(0, start), + graphemeStart = smallerTextStart.join('').length; + if (start === end) { + return { selectionStart: graphemeStart, selectionEnd: graphemeStart }; + } + var smallerTextEnd = _text.slice(start, end), + graphemeEnd = smallerTextEnd.join('').length; + return { selectionStart: graphemeStart, selectionEnd: graphemeStart + graphemeEnd }; + }, + + /** + * @private + */ + _updateTextarea: function() { + this.cursorOffsetCache = { }; + if (!this.hiddenTextarea) { + return; + } + if (!this.inCompositionMode) { + var newSelection = this.fromGraphemeToStringSelection(this.selectionStart, this.selectionEnd, this._text); + this.hiddenTextarea.selectionStart = newSelection.selectionStart; + this.hiddenTextarea.selectionEnd = newSelection.selectionEnd; + } + this.updateTextareaPosition(); + }, + + /** + * @private + */ + updateFromTextArea: function() { + if (!this.hiddenTextarea) { + return; + } + this.cursorOffsetCache = { }; + this.text = this.hiddenTextarea.value; + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + this.setCoords(); + } + var newSelection = this.fromStringToGraphemeSelection( + this.hiddenTextarea.selectionStart, this.hiddenTextarea.selectionEnd, this.hiddenTextarea.value); + this.selectionEnd = this.selectionStart = newSelection.selectionEnd; + if (!this.inCompositionMode) { + this.selectionStart = newSelection.selectionStart; + } + this.updateTextareaPosition(); + }, + + /** + * @private + */ + updateTextareaPosition: function() { + if (this.selectionStart === this.selectionEnd) { + var style = this._calcTextareaPosition(); + this.hiddenTextarea.style.left = style.left; + this.hiddenTextarea.style.top = style.top; + } + }, + + /** + * @private + * @return {Object} style contains style for hiddenTextarea + */ + _calcTextareaPosition: function() { + if (!this.canvas) { + return { x: 1, y: 1 }; + } + var desiredPosition = this.inCompositionMode ? this.compositionStart : this.selectionStart, + boundaries = this._getCursorBoundaries(desiredPosition), + cursorLocation = this.get2DCursorLocation(desiredPosition), + lineIndex = cursorLocation.lineIndex, + charIndex = cursorLocation.charIndex, + charHeight = this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize') * this.lineHeight, + leftOffset = boundaries.leftOffset, + m = this.calcTransformMatrix(), + p = { + x: boundaries.left + leftOffset, + y: boundaries.top + boundaries.topOffset + charHeight + }, + retinaScaling = this.canvas.getRetinaScaling(), + upperCanvas = this.canvas.upperCanvasEl, + upperCanvasWidth = upperCanvas.width / retinaScaling, + upperCanvasHeight = upperCanvas.height / retinaScaling, + maxWidth = upperCanvasWidth - charHeight, + maxHeight = upperCanvasHeight - charHeight, + scaleX = upperCanvas.clientWidth / upperCanvasWidth, + scaleY = upperCanvas.clientHeight / upperCanvasHeight; + + p = fabric.util.transformPoint(p, m); + p = fabric.util.transformPoint(p, this.canvas.viewportTransform); + p.x *= scaleX; + p.y *= scaleY; + if (p.x < 0) { + p.x = 0; + } + if (p.x > maxWidth) { + p.x = maxWidth; + } + if (p.y < 0) { + p.y = 0; + } + if (p.y > maxHeight) { + p.y = maxHeight; + } + + // add canvas offset on document + p.x += this.canvas._offset.left; + p.y += this.canvas._offset.top; + + return { left: p.x + 'px', top: p.y + 'px', fontSize: charHeight + 'px', charHeight: charHeight }; + }, + + /** + * @private + */ + _saveEditingProps: function() { + this._savedProps = { + hasControls: this.hasControls, + borderColor: this.borderColor, + lockMovementX: this.lockMovementX, + lockMovementY: this.lockMovementY, + hoverCursor: this.hoverCursor, + selectable: this.selectable, + defaultCursor: this.canvas && this.canvas.defaultCursor, + moveCursor: this.canvas && this.canvas.moveCursor + }; + }, -//@ts-nocheck -/* _TO_SVG_START_ */ -(function (global) { - var fabric = global.fabric, toFixed = fabric.util.toFixed, multipleSpacesRegex = / +/g; - fabric.util.object.extend(fabric.Text.prototype, - /** @lends fabric.Text.prototype */ { - /** - * Returns SVG representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - _toSVG: function () { - var offsets = this._getSVGLeftTopOffsets(), textAndBg = this._getSVGTextAndBg(offsets.textTop, offsets.textLeft); - return this._wrapSVGTextAndBg(textAndBg); - }, - /** - * Returns svg representation of an instance - * @param {Function} [reviver] Method for further parsing of svg representation. - * @return {String} svg representation of an instance - */ - toSVG: function (reviver) { - return this._createBaseSVGMarkup(this._toSVG(), { - reviver: reviver, - noStyle: true, - withShadow: true, - }); - }, - /** - * @private - */ - _getSVGLeftTopOffsets: function () { - return { - textLeft: -this.width / 2, - textTop: -this.height / 2, - lineTop: this.getHeightOfLine(0), - }; - }, - /** - * @private - */ - _wrapSVGTextAndBg: function (textAndBg) { - var noShadow = true, textDecoration = this.getSvgTextDecoration(this); - return [ - textAndBg.textBgRects.join(''), - '\t\t', - textAndBg.textSpans.join(''), - '\n', - ]; - }, - /** - * @private - * @param {Number} textTopOffset Text top offset - * @param {Number} textLeftOffset Text left offset - * @return {Object} - */ - _getSVGTextAndBg: function (textTopOffset, textLeftOffset) { - var textSpans = [], textBgRects = [], height = textTopOffset, lineOffset; - // bounding-box background - this._setSVGBg(textBgRects); - // text and text-background - for (var i = 0, len = this._textLines.length; i < len; i++) { - lineOffset = this._getLineLeftOffset(i); - if (this.direction === 'rtl') { - lineOffset += this.width; - } - if (this.textBackgroundColor || - this.styleHas('textBackgroundColor', i)) { - this._setSVGTextLineBg(textBgRects, i, textLeftOffset + lineOffset, height); - } - this._setSVGTextLineText(textSpans, i, textLeftOffset + lineOffset, height); - height += this.getHeightOfLine(i); - } - return { - textSpans: textSpans, - textBgRects: textBgRects, - }; - }, - /** - * @private - */ - _createTextCharSpan: function (_char, styleDecl, left, top) { - var shouldUseWhitespace = _char !== _char.trim() || _char.match(multipleSpacesRegex), styleProps = this.getSvgSpanStyles(styleDecl, shouldUseWhitespace), fillStyles = styleProps ? 'style="' + styleProps + '"' : '', dy = styleDecl.deltaY, dySpan = '', NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; - if (dy) { - dySpan = ' dy="' + toFixed(dy, NUM_FRACTION_DIGITS) + '" '; - } - return [ - '', - fabric.util.string.escapeXml(_char), - '', - ].join(''); - }, - _setSVGTextLineText: function (textSpans, lineIndex, textLeftOffset, textTopOffset) { - // set proper line offset - var lineHeight = this.getHeightOfLine(lineIndex), isJustify = this.textAlign.indexOf('justify') !== -1, actualStyle, nextStyle, charsToRender = '', charBox, style, boxWidth = 0, line = this._textLines[lineIndex], timeToRender; - textTopOffset += - (lineHeight * (1 - this._fontSizeFraction)) / this.lineHeight; - for (var i = 0, len = line.length - 1; i <= len; i++) { - timeToRender = i === len || this.charSpacing; - charsToRender += line[i]; - charBox = this.__charBounds[lineIndex][i]; - if (boxWidth === 0) { - textLeftOffset += charBox.kernedWidth - charBox.width; - boxWidth += charBox.width; - } - else { - boxWidth += charBox.kernedWidth; - } - if (isJustify && !timeToRender) { - if (this._reSpaceAndTab.test(line[i])) { - timeToRender = true; - } - } - if (!timeToRender) { - // if we have charSpacing, we render char by char - actualStyle = - actualStyle || this.getCompleteStyleDeclaration(lineIndex, i); - nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1); - timeToRender = fabric.util.hasStyleChanged(actualStyle, nextStyle, true); - } - if (timeToRender) { - style = this._getStyleDeclaration(lineIndex, i) || {}; - textSpans.push(this._createTextCharSpan(charsToRender, style, textLeftOffset, textTopOffset)); - charsToRender = ''; - actualStyle = nextStyle; - if (this.direction === 'rtl') { - textLeftOffset -= boxWidth; - } - else { - textLeftOffset += boxWidth; - } - boxWidth = 0; - } - } - }, - _pushTextBgRect: function (textBgRects, color, left, top, width, height) { - var NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS; - textBgRects.push('\t\t\n'); - }, - _setSVGTextLineBg: function (textBgRects, i, leftOffset, textTopOffset) { - var line = this._textLines[i], heightOfLine = this.getHeightOfLine(i) / this.lineHeight, boxWidth = 0, boxStart = 0, charBox, currentColor, lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor'); - for (var j = 0, jlen = line.length; j < jlen; j++) { - charBox = this.__charBounds[i][j]; - currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor'); - if (currentColor !== lastColor) { - lastColor && - this._pushTextBgRect(textBgRects, lastColor, leftOffset + boxStart, textTopOffset, boxWidth, heightOfLine); - boxStart = charBox.left; - boxWidth = charBox.width; - lastColor = currentColor; - } - else { - boxWidth += charBox.kernedWidth; - } - } - currentColor && - this._pushTextBgRect(textBgRects, currentColor, leftOffset + boxStart, textTopOffset, boxWidth, heightOfLine); - }, - /** - * Adobe Illustrator (at least CS5) is unable to render rgba()-based fill values - * we work around it by "moving" alpha channel into opacity attribute and setting fill's alpha to 1 - * - * @private - * @param {*} value - * @return {String} - */ - _getFillAttributes: function (value) { - var fillColor = value && typeof value === 'string' ? new Color(value) : ''; - if (!fillColor || - !fillColor.getSource() || - fillColor.getAlpha() === 1) { - return 'fill="' + value + '"'; - } - return ('opacity="' + - fillColor.getAlpha() + - '" fill="' + - fillColor.setAlpha(1).toRgb() + - '"'); - }, - /** - * @private - */ - _getSVGLineTopOffset: function (lineIndex) { - var lineTopOffset = 0, lastHeight = 0; - for (var j = 0; j < lineIndex; j++) { - lineTopOffset += this.getHeightOfLine(j); - } - lastHeight = this.getHeightOfLine(j); - return { - lineTop: lineTopOffset, - offset: ((this._fontSizeMult - this._fontSizeFraction) * lastHeight) / - (this.lineHeight * this._fontSizeMult), - }; - }, - /** - * Returns styles-string for svg-export - * @param {Boolean} skipShadow a boolean to skip shadow filter output - * @return {String} - */ - getSvgStyles: function (skipShadow) { - var svgStyle = fabric.Object.prototype.getSvgStyles.call(this, skipShadow); - return svgStyle + ' white-space: pre;'; - }, - }); -})(typeof exports !== 'undefined' ? exports : window); -/* _TO_SVG_END_ */ + /** + * @private + */ + _restoreEditingProps: function() { + if (!this._savedProps) { + return; + } + + this.hoverCursor = this._savedProps.hoverCursor; + this.hasControls = this._savedProps.hasControls; + this.borderColor = this._savedProps.borderColor; + this.selectable = this._savedProps.selectable; + this.lockMovementX = this._savedProps.lockMovementX; + this.lockMovementY = this._savedProps.lockMovementY; + + if (this.canvas) { + this.canvas.defaultCursor = this._savedProps.defaultCursor; + this.canvas.moveCursor = this._savedProps.moveCursor; + } + }, -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}); - /** - * Textbox class, based on IText, allows the user to resize the text rectangle - * and wraps lines automatically. Textboxes have their Y scaling locked, the - * user can only change width. Height is adjusted automatically based on the - * wrapping of lines. - * @class fabric.Textbox - * @extends fabric.IText - * @mixes fabric.Observable - * @return {fabric.Textbox} thisArg - * @see {@link fabric.Textbox#initialize} for constructor definition - */ - fabric.Textbox = fabric.util.createClass(fabric.IText, fabric.Observable, { - /** - * Type of an object - * @type String - * @default - */ - type: 'textbox', - /** - * Minimum width of textbox, in pixels. - * @type Number - * @default - */ - minWidth: 20, - /** - * Minimum calculated width of a textbox, in pixels. - * fixed to 2 so that an empty textbox cannot go to 0 - * and is still selectable without text. - * @type Number - * @default - */ - dynamicMinWidth: 2, - /** - * Cached array of text wrapping. - * @type Array - */ - __cachedLines: null, - /** - * Override standard Object class values - */ - lockScalingFlip: true, - /** - * Override standard Object class values - * Textbox needs this on false - */ - noScaleCache: false, - /** - * Properties which when set cause object to change dimensions - * @type Object - * @private - */ - _dimensionAffectingProps: fabric.Text.prototype._dimensionAffectingProps.concat('width'), - /** - * Use this regular expression to split strings in breakable lines - * @private - */ - _wordJoiners: /[ \t\r]/, - /** - * Use this boolean property in order to split strings that have no white space concept. - * this is a cheap way to help with chinese/japanese - * @type Boolean - * @since 2.6.0 - */ - splitByGrapheme: false, - /** - * Unlike superclass's version of this function, Textbox does not update - * its width. - * @private - * @override - */ - initDimensions: function () { - if (this.__skipDimension) { - return; - } - this.isEditing && this.initDelayedCursor(); - this.clearContextTop(); - this._clearCache(); - // clear dynamicMinWidth as it will be different after we re-wrap line - this.dynamicMinWidth = 0; - // wrap lines - this._styleMap = this._generateStyleMap(this._splitText()); - // if after wrapping, the width is smaller than dynamicMinWidth, change the width and re-wrap - if (this.dynamicMinWidth > this.width) { - this._set('width', this.dynamicMinWidth); - } - if (this.textAlign.indexOf('justify') !== -1) { - // once text is measured we need to make space fatter to make justified text. - this.enlargeSpaces(); - } - // clear cache and re-calculate height - this.height = this.calcTextHeight(); - this.saveState({ propertySet: '_dimensionAffectingProps' }); - }, - /** - * Generate an object that translates the style object so that it is - * broken up by visual lines (new lines and automatic wrapping). - * The original text styles object is broken up by actual lines (new lines only), - * which is only sufficient for Text / IText - * @private - */ - _generateStyleMap: function (textInfo) { - var realLineCount = 0, realLineCharCount = 0, charCount = 0, map = {}; - for (var i = 0; i < textInfo.graphemeLines.length; i++) { - if (textInfo.graphemeText[charCount] === '\n' && i > 0) { - realLineCharCount = 0; - charCount++; - realLineCount++; - } - else if (!this.splitByGrapheme && - this._reSpaceAndTab.test(textInfo.graphemeText[charCount]) && - i > 0) { - // this case deals with space's that are removed from end of lines when wrapping - realLineCharCount++; - charCount++; - } - map[i] = { line: realLineCount, offset: realLineCharCount }; - charCount += textInfo.graphemeLines[i].length; - realLineCharCount += textInfo.graphemeLines[i].length; - } - return map; - }, - /** - * Returns true if object has a style property or has it on a specified line - * @param {Number} lineIndex - * @return {Boolean} - */ - styleHas: function (property, lineIndex) { - if (this._styleMap && !this.isWrapping) { - var map = this._styleMap[lineIndex]; - if (map) { - lineIndex = map.line; - } - } - return fabric.Text.prototype.styleHas.call(this, property, lineIndex); - }, - /** - * Returns true if object has no styling or no styling in a line - * @param {Number} lineIndex , lineIndex is on wrapped lines. - * @return {Boolean} - */ - isEmptyStyles: function (lineIndex) { - if (!this.styles) { - return true; - } - var offset = 0, nextLineIndex = lineIndex + 1, nextOffset, obj, shouldLimit = false, map = this._styleMap[lineIndex], mapNextLine = this._styleMap[lineIndex + 1]; - if (map) { - lineIndex = map.line; - offset = map.offset; - } - if (mapNextLine) { - nextLineIndex = mapNextLine.line; - shouldLimit = nextLineIndex === lineIndex; - nextOffset = mapNextLine.offset; - } - obj = - typeof lineIndex === 'undefined' - ? this.styles - : { line: this.styles[lineIndex] }; - for (var p1 in obj) { - for (var p2 in obj[p1]) { - if (p2 >= offset && (!shouldLimit || p2 < nextOffset)) { - // eslint-disable-next-line no-unused-vars - for (var p3 in obj[p1][p2]) { - return false; - } - } - } - } - return true; - }, - /** - * @param {Number} lineIndex - * @param {Number} charIndex - * @private - */ - _getStyleDeclaration: function (lineIndex, charIndex) { - if (this._styleMap && !this.isWrapping) { - var map = this._styleMap[lineIndex]; - if (!map) { - return null; - } - lineIndex = map.line; - charIndex = map.offset + charIndex; - } - return this.callSuper('_getStyleDeclaration', lineIndex, charIndex); - }, - /** - * @param {Number} lineIndex - * @param {Number} charIndex - * @param {Object} style - * @private - */ - _setStyleDeclaration: function (lineIndex, charIndex, style) { - var map = this._styleMap[lineIndex]; - lineIndex = map.line; - charIndex = map.offset + charIndex; - this.styles[lineIndex][charIndex] = style; - }, - /** - * @param {Number} lineIndex - * @param {Number} charIndex - * @private - */ - _deleteStyleDeclaration: function (lineIndex, charIndex) { - var map = this._styleMap[lineIndex]; - lineIndex = map.line; - charIndex = map.offset + charIndex; - delete this.styles[lineIndex][charIndex]; - }, - /** - * probably broken need a fix - * Returns the real style line that correspond to the wrapped lineIndex line - * Used just to verify if the line does exist or not. - * @param {Number} lineIndex - * @returns {Boolean} if the line exists or not - * @private - */ - _getLineStyle: function (lineIndex) { - var map = this._styleMap[lineIndex]; - return !!this.styles[map.line]; - }, - /** - * Set the line style to an empty object so that is initialized - * @param {Number} lineIndex - * @param {Object} style - * @private - */ - _setLineStyle: function (lineIndex) { - var map = this._styleMap[lineIndex]; - this.styles[map.line] = {}; - }, - /** - * Wraps text using the 'width' property of Textbox. First this function - * splits text on newlines, so we preserve newlines entered by the user. - * Then it wraps each line using the width of the Textbox by calling - * _wrapLine(). - * @param {Array} lines The string array of text that is split into lines - * @param {Number} desiredWidth width you want to wrap to - * @returns {Array} Array of lines - */ - _wrapText: function (lines, desiredWidth) { - var wrapped = [], i; - this.isWrapping = true; - for (i = 0; i < lines.length; i++) { - wrapped.push.apply(wrapped, this._wrapLine(lines[i], i, desiredWidth)); - } - this.isWrapping = false; - return wrapped; - }, - /** - * Helper function to measure a string of text, given its lineIndex and charIndex offset - * It gets called when charBounds are not available yet. - * Override if necessary - * Use with {@link fabric.Textbox#wordSplit} - * - * @param {CanvasRenderingContext2D} ctx - * @param {String} text - * @param {number} lineIndex - * @param {number} charOffset - * @returns {number} - */ - _measureWord: function (word, lineIndex, charOffset) { - var width = 0, prevGrapheme, skipLeft = true; - charOffset = charOffset || 0; - for (var i = 0, len = word.length; i < len; i++) { - var box = this._getGraphemeBox(word[i], lineIndex, i + charOffset, prevGrapheme, skipLeft); - width += box.kernedWidth; - prevGrapheme = word[i]; - } - return width; - }, - /** - * Override this method to customize word splitting - * Use with {@link fabric.Textbox#_measureWord} - * @param {string} value - * @returns {string[]} array of words - */ - wordSplit: function (value) { - return value.split(this._wordJoiners); - }, - /** - * Wraps a line of text using the width of the Textbox and a context. - * @param {Array} line The grapheme array that represent the line - * @param {Number} lineIndex - * @param {Number} desiredWidth width you want to wrap the line to - * @param {Number} reservedSpace space to remove from wrapping for custom functionalities - * @returns {Array} Array of line(s) into which the given text is wrapped - * to. - */ - _wrapLine: function (_line, lineIndex, desiredWidth, reservedSpace) { - var lineWidth = 0, splitByGrapheme = this.splitByGrapheme, graphemeLines = [], line = [], - // spaces in different languages? - words = splitByGrapheme - ? this.graphemeSplit(_line) - : this.wordSplit(_line), word = '', offset = 0, infix = splitByGrapheme ? '' : ' ', wordWidth = 0, infixWidth = 0, largestWordWidth = 0, lineJustStarted = true, additionalSpace = this._getWidthOfCharSpacing(), reservedSpace = reservedSpace || 0; - // fix a difference between split and graphemeSplit - if (words.length === 0) { - words.push([]); - } - desiredWidth -= reservedSpace; - // measure words - var data = words.map(function (word) { - // if using splitByGrapheme words are already in graphemes. - word = splitByGrapheme ? word : this.graphemeSplit(word); - var width = this._measureWord(word, lineIndex, offset); - largestWordWidth = Math.max(width, largestWordWidth); - offset += word.length + 1; - return { word: word, width: width }; - }.bind(this)); - var maxWidth = Math.max(desiredWidth, largestWordWidth, this.dynamicMinWidth); - // layout words - offset = 0; - for (var i = 0; i < words.length; i++) { - word = data[i].word; - wordWidth = data[i].width; - offset += word.length; - lineWidth += infixWidth + wordWidth - additionalSpace; - if (lineWidth > maxWidth && !lineJustStarted) { - graphemeLines.push(line); - line = []; - lineWidth = wordWidth; - lineJustStarted = true; - } - else { - lineWidth += additionalSpace; - } - if (!lineJustStarted && !splitByGrapheme) { - line.push(infix); - } - line = line.concat(word); - infixWidth = splitByGrapheme - ? 0 - : this._measureWord([infix], lineIndex, offset); - offset++; - lineJustStarted = false; - } - i && graphemeLines.push(line); - if (largestWordWidth + reservedSpace > this.dynamicMinWidth) { - this.dynamicMinWidth = - largestWordWidth - additionalSpace + reservedSpace; - } - return graphemeLines; - }, - /** - * Detect if the text line is ended with an hard break - * text and itext do not have wrapping, return false - * @param {Number} lineIndex text to split - * @return {Boolean} - */ - isEndOfWrapping: function (lineIndex) { - if (!this._styleMap[lineIndex + 1]) { - // is last line, return true; - return true; - } - if (this._styleMap[lineIndex + 1].line !== this._styleMap[lineIndex].line) { - // this is last line before a line break, return true; - return true; - } - return false; - }, - /** - * Detect if a line has a linebreak and so we need to account for it when moving - * and counting style. - * @return Number - */ - missingNewlineOffset: function (lineIndex) { - if (this.splitByGrapheme) { - return this.isEndOfWrapping(lineIndex) ? 1 : 0; - } - return 1; - }, - /** - * Gets lines of text to render in the Textbox. This function calculates - * text wrapping on the fly every time it is called. - * @param {String} text text to split - * @returns {Array} Array of lines in the Textbox. - * @override - */ - _splitTextIntoLines: function (text) { - var newText = fabric.Text.prototype._splitTextIntoLines.call(this, text), graphemeLines = this._wrapText(newText.lines, this.width), lines = new Array(graphemeLines.length); - for (var i = 0; i < graphemeLines.length; i++) { - lines[i] = graphemeLines[i].join(''); - } - newText.lines = lines; - newText.graphemeLines = graphemeLines; - return newText; - }, - getMinWidth: function () { - return Math.max(this.minWidth, this.dynamicMinWidth); - }, - _removeExtraneousStyles: function () { - var linesToKeep = {}; - for (var prop in this._styleMap) { - if (this._textLines[prop]) { - linesToKeep[this._styleMap[prop].line] = 1; - } - } - for (var prop in this.styles) { - if (!linesToKeep[prop]) { - delete this.styles[prop]; - } - } - }, - /** - * Returns object representation of an instance - * @method toObject - * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output - * @return {Object} object representation of an instance - */ - toObject: function (propertiesToInclude) { - return this.callSuper('toObject', ['minWidth', 'splitByGrapheme'].concat(propertiesToInclude)); - }, - }); /** - * Returns fabric.Textbox instance from an object representation - * @static - * @memberOf fabric.Textbox - * @param {Object} object Object to create an instance from - * @returns {Promise} - */ - fabric.Textbox.fromObject = function (object) { - var styles = fabric.util.stylesFromArray(object.styles, object.text); - //copy object to prevent mutation - var objCopy = Object.assign({}, object, { styles: styles }); - return fabric.Object._fromObject(fabric.Textbox, objCopy, { - extraParam: 'text', + * Exits from editing state + * @return {fabric.IText} thisArg + * @chainable + */ + exitEditing: function() { + var isTextChanged = (this._textBeforeEdit !== this.text); + var hiddenTextarea = this.hiddenTextarea; + this.selected = false; + this.isEditing = false; + + this.selectionEnd = this.selectionStart; + + if (hiddenTextarea) { + hiddenTextarea.blur && hiddenTextarea.blur(); + hiddenTextarea.parentNode && hiddenTextarea.parentNode.removeChild(hiddenTextarea); + } + this.hiddenTextarea = null; + this.abortCursorAnimation(); + this._restoreEditingProps(); + this._currentCursorOpacity = 0; + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + this.setCoords(); + } + this.fire('editing:exited'); + isTextChanged && this.fire('modified'); + if (this.canvas) { + this.canvas.off('mouse:move', this.mouseMoveHandler); + this.canvas.fire('text:editing:exited', { target: this }); + isTextChanged && this.canvas.fire('object:modified', { target: this }); + } + return this; + }, + + /** + * @private + */ + _removeExtraneousStyles: function() { + for (var prop in this.styles) { + if (!this._textLines[prop]) { + delete this.styles[prop]; + } + } + }, + + /** + * remove and reflow a style block from start to end. + * @param {Number} start linear start position for removal (included in removal) + * @param {Number} end linear end position for removal ( excluded from removal ) + */ + removeStyleFromTo: function(start, end) { + var cursorStart = this.get2DCursorLocation(start, true), + cursorEnd = this.get2DCursorLocation(end, true), + lineStart = cursorStart.lineIndex, + charStart = cursorStart.charIndex, + lineEnd = cursorEnd.lineIndex, + charEnd = cursorEnd.charIndex, + i, styleObj; + if (lineStart !== lineEnd) { + // step1 remove the trailing of lineStart + if (this.styles[lineStart]) { + for (i = charStart; i < this._unwrappedTextLines[lineStart].length; i++) { + delete this.styles[lineStart][i]; + } + } + // step2 move the trailing of lineEnd to lineStart if needed + if (this.styles[lineEnd]) { + for (i = charEnd; i < this._unwrappedTextLines[lineEnd].length; i++) { + styleObj = this.styles[lineEnd][i]; + if (styleObj) { + this.styles[lineStart] || (this.styles[lineStart] = { }); + this.styles[lineStart][charStart + i - charEnd] = styleObj; + } + } + } + // step3 detects lines will be completely removed. + for (i = lineStart + 1; i <= lineEnd; i++) { + delete this.styles[i]; + } + // step4 shift remaining lines. + this.shiftLineStyles(lineEnd, lineStart - lineEnd); + } + else { + // remove and shift left on the same line + if (this.styles[lineStart]) { + styleObj = this.styles[lineStart]; + var diff = charEnd - charStart, numericChar, _char; + for (i = charStart; i < charEnd; i++) { + delete styleObj[i]; + } + for (_char in this.styles[lineStart]) { + numericChar = parseInt(_char, 10); + if (numericChar >= charEnd) { + styleObj[numericChar - diff] = styleObj[_char]; + delete styleObj[_char]; + } + } + } + } + }, + + /** + * Shifts line styles up or down + * @param {Number} lineIndex Index of a line + * @param {Number} offset Can any number? + */ + shiftLineStyles: function(lineIndex, offset) { + // shift all line styles by offset upward or downward + // do not clone deep. we need new array, not new style objects + var clonedStyles = clone(this.styles); + for (var line in this.styles) { + var numericLine = parseInt(line, 10); + if (numericLine > lineIndex) { + this.styles[numericLine + offset] = clonedStyles[numericLine]; + if (!clonedStyles[numericLine - offset]) { + delete this.styles[numericLine]; + } + } + } + }, + + restartCursorIfNeeded: function() { + if (!this._currentTickState || this._currentTickState.isAborted + || !this._currentTickCompleteState || this._currentTickCompleteState.isAborted + ) { + this.initDelayedCursor(); + } + }, + + /** + * Handle insertion of more consecutive style lines for when one or more + * newlines gets added to the text. Since current style needs to be shifted + * first we shift the current style of the number lines needed, then we add + * new lines from the last to the first. + * @param {Number} lineIndex Index of a line + * @param {Number} charIndex Index of a char + * @param {Number} qty number of lines to add + * @param {Array} copiedStyle Array of objects styles + */ + insertNewlineStyleObject: function(lineIndex, charIndex, qty, copiedStyle) { + var currentCharStyle, + newLineStyles = {}, + somethingAdded = false, + isEndOfLine = this._unwrappedTextLines[lineIndex].length === charIndex; + + qty || (qty = 1); + this.shiftLineStyles(lineIndex, qty); + if (this.styles[lineIndex]) { + currentCharStyle = this.styles[lineIndex][charIndex === 0 ? charIndex : charIndex - 1]; + } + // we clone styles of all chars + // after cursor onto the current line + for (var index in this.styles[lineIndex]) { + var numIndex = parseInt(index, 10); + if (numIndex >= charIndex) { + somethingAdded = true; + newLineStyles[numIndex - charIndex] = this.styles[lineIndex][index]; + // remove lines from the previous line since they're on a new line now + if (!(isEndOfLine && charIndex === 0)) { + delete this.styles[lineIndex][index]; + } + } + } + var styleCarriedOver = false; + if (somethingAdded && !isEndOfLine) { + // if is end of line, the extra style we copied + // is probably not something we want + this.styles[lineIndex + qty] = newLineStyles; + styleCarriedOver = true; + } + if (styleCarriedOver) { + // skip the last line of since we already prepared it. + qty--; + } + // for the all the lines or all the other lines + // we clone current char style onto the next (otherwise empty) line + while (qty > 0) { + if (copiedStyle && copiedStyle[qty - 1]) { + this.styles[lineIndex + qty] = { 0: clone(copiedStyle[qty - 1]) }; + } + else if (currentCharStyle) { + this.styles[lineIndex + qty] = { 0: clone(currentCharStyle) }; + } + else { + delete this.styles[lineIndex + qty]; + } + qty--; + } + this._forceClearCache = true; + }, + + /** + * Inserts style object for a given line/char index + * @param {Number} lineIndex Index of a line + * @param {Number} charIndex Index of a char + * @param {Number} quantity number Style object to insert, if given + * @param {Array} copiedStyle array of style objects + */ + insertCharStyleObject: function(lineIndex, charIndex, quantity, copiedStyle) { + if (!this.styles) { + this.styles = {}; + } + var currentLineStyles = this.styles[lineIndex], + currentLineStylesCloned = currentLineStyles ? clone(currentLineStyles) : {}; + + quantity || (quantity = 1); + // shift all char styles by quantity forward + // 0,1,2,3 -> (charIndex=2) -> 0,1,3,4 -> (insert 2) -> 0,1,2,3,4 + for (var index in currentLineStylesCloned) { + var numericIndex = parseInt(index, 10); + if (numericIndex >= charIndex) { + currentLineStyles[numericIndex + quantity] = currentLineStylesCloned[numericIndex]; + // only delete the style if there was nothing moved there + if (!currentLineStylesCloned[numericIndex - quantity]) { + delete currentLineStyles[numericIndex]; + } + } + } + this._forceClearCache = true; + if (copiedStyle) { + while (quantity--) { + if (!Object.keys(copiedStyle[quantity]).length) { + continue; + } + if (!this.styles[lineIndex]) { + this.styles[lineIndex] = {}; + } + this.styles[lineIndex][charIndex + quantity] = clone(copiedStyle[quantity]); + } + return; + } + if (!currentLineStyles) { + return; + } + var newStyle = currentLineStyles[charIndex ? charIndex - 1 : 1]; + while (newStyle && quantity--) { + this.styles[lineIndex][charIndex + quantity] = clone(newStyle); + } + }, + + /** + * Inserts style object(s) + * @param {Array} insertedText Characters at the location where style is inserted + * @param {Number} start cursor index for inserting style + * @param {Array} [copiedStyle] array of style objects to insert. + */ + insertNewStyleBlock: function(insertedText, start, copiedStyle) { + var cursorLoc = this.get2DCursorLocation(start, true), + addedLines = [0], linesLength = 0; + // get an array of how many char per lines are being added. + for (var i = 0; i < insertedText.length; i++) { + if (insertedText[i] === '\n') { + linesLength++; + addedLines[linesLength] = 0; + } + else { + addedLines[linesLength]++; + } + } + // for the first line copy the style from the current char position. + if (addedLines[0] > 0) { + this.insertCharStyleObject(cursorLoc.lineIndex, cursorLoc.charIndex, addedLines[0], copiedStyle); + copiedStyle = copiedStyle && copiedStyle.slice(addedLines[0] + 1); + } + linesLength && this.insertNewlineStyleObject( + cursorLoc.lineIndex, cursorLoc.charIndex + addedLines[0], linesLength); + for (var i = 1; i < linesLength; i++) { + if (addedLines[i] > 0) { + this.insertCharStyleObject(cursorLoc.lineIndex + i, 0, addedLines[i], copiedStyle); + } + else if (copiedStyle) { + // this test is required in order to close #6841 + // when a pasted buffer begins with a newline then + // this.styles[cursorLoc.lineIndex + i] and copiedStyle[0] + // may be undefined for some reason + if (this.styles[cursorLoc.lineIndex + i] && copiedStyle[0]) { + this.styles[cursorLoc.lineIndex + i][0] = copiedStyle[0]; + } + } + copiedStyle = copiedStyle && copiedStyle.slice(addedLines[i] + 1); + } + // we use i outside the loop to get it like linesLength + if (addedLines[i] > 0) { + this.insertCharStyleObject(cursorLoc.lineIndex + i, 0, addedLines[i], copiedStyle); + } + }, + + /** + * Set the selectionStart and selectionEnd according to the new position of cursor + * mimic the key - mouse navigation when shift is pressed. + */ + setSelectionStartEndWithShift: function(start, end, newSelection) { + if (newSelection <= start) { + if (end === start) { + this._selectionDirection = 'left'; + } + else if (this._selectionDirection === 'right') { + this._selectionDirection = 'left'; + this.selectionEnd = start; + } + this.selectionStart = newSelection; + } + else if (newSelection > start && newSelection < end) { + if (this._selectionDirection === 'right') { + this.selectionEnd = newSelection; + } + else { + this.selectionStart = newSelection; + } + } + else { + // newSelection is > selection start and end + if (end === start) { + this._selectionDirection = 'right'; + } + else if (this._selectionDirection === 'left') { + this._selectionDirection = 'right'; + this.selectionStart = end; + } + this.selectionEnd = newSelection; + } + }, + + setSelectionInBoundaries: function() { + var length = this.text.length; + if (this.selectionStart > length) { + this.selectionStart = length; + } + else if (this.selectionStart < 0) { + this.selectionStart = 0; + } + if (this.selectionEnd > length) { + this.selectionEnd = length; + } + else if (this.selectionEnd < 0) { + this.selectionEnd = 0; + } + } + }); +})(); + + +fabric.util.object.extend(fabric.IText.prototype, /** @lends fabric.IText.prototype */ { + /** + * Initializes "dbclick" event handler + */ + initDoubleClickSimulation: function() { + + // for double click + this.__lastClickTime = +new Date(); + + // for triple click + this.__lastLastClickTime = +new Date(); + + this.__lastPointer = { }; + + this.on('mousedown', this.onMouseDown); + }, + + /** + * Default event handler to simulate triple click + * @private + */ + onMouseDown: function(options) { + if (!this.canvas) { + return; + } + this.__newClickTime = +new Date(); + var newPointer = options.pointer; + if (this.isTripleClick(newPointer)) { + this.fire('tripleclick', options); + this._stopEvent(options.e); + } + this.__lastLastClickTime = this.__lastClickTime; + this.__lastClickTime = this.__newClickTime; + this.__lastPointer = newPointer; + this.__lastIsEditing = this.isEditing; + this.__lastSelected = this.selected; + }, + + isTripleClick: function(newPointer) { + return this.__newClickTime - this.__lastClickTime < 500 && + this.__lastClickTime - this.__lastLastClickTime < 500 && + this.__lastPointer.x === newPointer.x && + this.__lastPointer.y === newPointer.y; + }, + + /** + * @private + */ + _stopEvent: function(e) { + e.preventDefault && e.preventDefault(); + e.stopPropagation && e.stopPropagation(); + }, + + /** + * Initializes event handlers related to cursor or selection + */ + initCursorSelectionHandlers: function() { + this.initMousedownHandler(); + this.initMouseupHandler(); + this.initClicks(); + }, + + /** + * Default handler for double click, select a word + */ + doubleClickHandler: function(options) { + if (!this.isEditing) { + return; + } + this.selectWord(this.getSelectionStartFromPointer(options.e)); + }, + + /** + * Default handler for triple click, select a line + */ + tripleClickHandler: function(options) { + if (!this.isEditing) { + return; + } + this.selectLine(this.getSelectionStartFromPointer(options.e)); + }, + + /** + * Initializes double and triple click event handlers + */ + initClicks: function() { + this.on('mousedblclick', this.doubleClickHandler); + this.on('tripleclick', this.tripleClickHandler); + }, + + /** + * Default event handler for the basic functionalities needed on _mouseDown + * can be overridden to do something different. + * Scope of this implementation is: find the click position, set selectionStart + * find selectionEnd, initialize the drawing of either cursor or selection area + * initializing a mousedDown on a text area will cancel fabricjs knowledge of + * current compositionMode. It will be set to false. + */ + _mouseDownHandler: function(options) { + if (!this.canvas || !this.editable || (options.e.button && options.e.button !== 1)) { + return; + } + + this.__isMousedown = true; + + if (this.selected) { + this.inCompositionMode = false; + this.setCursorByClick(options.e); + } + + if (this.isEditing) { + this.__selectionStartOnMouseDown = this.selectionStart; + if (this.selectionStart === this.selectionEnd) { + this.abortCursorAnimation(); + } + this.renderCursorOrSelection(); + } + }, + + /** + * Default event handler for the basic functionalities needed on mousedown:before + * can be overridden to do something different. + * Scope of this implementation is: verify the object is already selected when mousing down + */ + _mouseDownHandlerBefore: function(options) { + if (!this.canvas || !this.editable || (options.e.button && options.e.button !== 1)) { + return; + } + // we want to avoid that an object that was selected and then becomes unselectable, + // may trigger editing mode in some way. + this.selected = this === this.canvas._activeObject; + }, + + /** + * Initializes "mousedown" event handler + */ + initMousedownHandler: function() { + this.on('mousedown', this._mouseDownHandler); + this.on('mousedown:before', this._mouseDownHandlerBefore); + }, + + /** + * Initializes "mouseup" event handler + */ + initMouseupHandler: function() { + this.on('mouseup', this.mouseUpHandler); + }, + + /** + * standard handler for mouse up, overridable + * @private + */ + mouseUpHandler: function(options) { + this.__isMousedown = false; + if (!this.editable || this.group || + (options.transform && options.transform.actionPerformed) || + (options.e.button && options.e.button !== 1)) { + return; + } + + if (this.canvas) { + var currentActive = this.canvas._activeObject; + if (currentActive && currentActive !== this) { + // avoid running this logic when there is an active object + // this because is possible with shift click and fast clicks, + // to rapidly deselect and reselect this object and trigger an enterEdit + return; + } + } + + if (this.__lastSelected && !this.__corner) { + this.selected = false; + this.__lastSelected = false; + this.enterEditing(options.e); + if (this.selectionStart === this.selectionEnd) { + this.initDelayedCursor(true); + } + else { + this.renderCursorOrSelection(); + } + } + else { + this.selected = true; + } + }, + + /** + * Changes cursor location in a text depending on passed pointer (x/y) object + * @param {Event} e Event object + */ + setCursorByClick: function(e) { + var newSelection = this.getSelectionStartFromPointer(e), + start = this.selectionStart, end = this.selectionEnd; + if (e.shiftKey) { + this.setSelectionStartEndWithShift(start, end, newSelection); + } + else { + this.selectionStart = newSelection; + this.selectionEnd = newSelection; + } + if (this.isEditing) { + this._fireSelectionChanged(); + this._updateTextarea(); + } + }, + + /** + * Returns index of a character corresponding to where an object was clicked + * @param {Event} e Event object + * @return {Number} Index of a character + */ + getSelectionStartFromPointer: function(e) { + var mouseOffset = this.getLocalPointer(e), + prevWidth = 0, + width = 0, + height = 0, + charIndex = 0, + lineIndex = 0, + lineLeftOffset, + line; + for (var i = 0, len = this._textLines.length; i < len; i++) { + if (height <= mouseOffset.y) { + height += this.getHeightOfLine(i) * this.scaleY; + lineIndex = i; + if (i > 0) { + charIndex += this._textLines[i - 1].length + this.missingNewlineOffset(i - 1); + } + } + else { + break; + } + } + lineLeftOffset = this._getLineLeftOffset(lineIndex); + width = lineLeftOffset * this.scaleX; + line = this._textLines[lineIndex]; + // handling of RTL: in order to get things work correctly, + // we assume RTL writing is mirrored compared to LTR writing. + // so in position detection we mirror the X offset, and when is time + // of rendering it, we mirror it again. + if (this.direction === 'rtl') { + mouseOffset.x = this.width * this.scaleX - mouseOffset.x + width; + } + for (var j = 0, jlen = line.length; j < jlen; j++) { + prevWidth = width; + // i removed something about flipX here, check. + width += this.__charBounds[lineIndex][j].kernedWidth * this.scaleX; + if (width <= mouseOffset.x) { + charIndex++; + } + else { + break; + } + } + return this._getNewSelectionStartFromOffset(mouseOffset, prevWidth, width, charIndex, jlen); + }, + + /** + * @private + */ + _getNewSelectionStartFromOffset: function(mouseOffset, prevWidth, width, index, jlen) { + // we need Math.abs because when width is after the last char, the offset is given as 1, while is 0 + var distanceBtwLastCharAndCursor = mouseOffset.x - prevWidth, + distanceBtwNextCharAndCursor = width - mouseOffset.x, + offset = distanceBtwNextCharAndCursor > distanceBtwLastCharAndCursor || + distanceBtwNextCharAndCursor < 0 ? 0 : 1, + newSelectionStart = index + offset; + // if object is horizontally flipped, mirror cursor location from the end + if (this.flipX) { + newSelectionStart = jlen - newSelectionStart; + } + + if (newSelectionStart > this._text.length) { + newSelectionStart = this._text.length; + } + + return newSelectionStart; + } +}); + + +fabric.util.object.extend(fabric.IText.prototype, /** @lends fabric.IText.prototype */ { + + /** + * Initializes hidden textarea (needed to bring up keyboard in iOS) + */ + initHiddenTextarea: function() { + this.hiddenTextarea = fabric.document.createElement('textarea'); + this.hiddenTextarea.setAttribute('autocapitalize', 'off'); + this.hiddenTextarea.setAttribute('autocorrect', 'off'); + this.hiddenTextarea.setAttribute('autocomplete', 'off'); + this.hiddenTextarea.setAttribute('spellcheck', 'false'); + this.hiddenTextarea.setAttribute('data-fabric-hiddentextarea', ''); + this.hiddenTextarea.setAttribute('wrap', 'off'); + var style = this._calcTextareaPosition(); + // line-height: 1px; was removed from the style to fix this: + // https://bugs.chromium.org/p/chromium/issues/detail?id=870966 + this.hiddenTextarea.style.cssText = 'position: absolute; top: ' + style.top + + '; left: ' + style.left + '; z-index: -999; opacity: 0; width: 1px; height: 1px; font-size: 1px;' + + ' paddingｰtop: ' + style.fontSize + ';'; + + if (this.hiddenTextareaContainer) { + this.hiddenTextareaContainer.appendChild(this.hiddenTextarea); + } + else { + fabric.document.body.appendChild(this.hiddenTextarea); + } + + fabric.util.addListener(this.hiddenTextarea, 'keydown', this.onKeyDown.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'keyup', this.onKeyUp.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'input', this.onInput.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'copy', this.copy.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'cut', this.copy.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'paste', this.paste.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'compositionstart', this.onCompositionStart.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'compositionupdate', this.onCompositionUpdate.bind(this)); + fabric.util.addListener(this.hiddenTextarea, 'compositionend', this.onCompositionEnd.bind(this)); + + if (!this._clickHandlerInitialized && this.canvas) { + fabric.util.addListener(this.canvas.upperCanvasEl, 'click', this.onClick.bind(this)); + this._clickHandlerInitialized = true; + } + }, + + /** + * For functionalities on keyDown + * Map a special key to a function of the instance/prototype + * If you need different behaviour for ESC or TAB or arrows, you have to change + * this map setting the name of a function that you build on the fabric.Itext or + * your prototype. + * the map change will affect all Instances unless you need for only some text Instances + * in that case you have to clone this object and assign your Instance. + * this.keysMap = fabric.util.object.clone(this.keysMap); + * The function must be in fabric.Itext.prototype.myFunction And will receive event as args[0] + */ + keysMap: { + 9: 'exitEditing', + 27: 'exitEditing', + 33: 'moveCursorUp', + 34: 'moveCursorDown', + 35: 'moveCursorRight', + 36: 'moveCursorLeft', + 37: 'moveCursorLeft', + 38: 'moveCursorUp', + 39: 'moveCursorRight', + 40: 'moveCursorDown', + }, + + keysMapRtl: { + 9: 'exitEditing', + 27: 'exitEditing', + 33: 'moveCursorUp', + 34: 'moveCursorDown', + 35: 'moveCursorLeft', + 36: 'moveCursorRight', + 37: 'moveCursorRight', + 38: 'moveCursorUp', + 39: 'moveCursorLeft', + 40: 'moveCursorDown', + }, + + /** + * For functionalities on keyUp + ctrl || cmd + */ + ctrlKeysMapUp: { + 67: 'copy', + 88: 'cut' + }, + + /** + * For functionalities on keyDown + ctrl || cmd + */ + ctrlKeysMapDown: { + 65: 'selectAll' + }, + + onClick: function() { + // No need to trigger click event here, focus is enough to have the keyboard appear on Android + this.hiddenTextarea && this.hiddenTextarea.focus(); + }, + + /** + * Handles keydown event + * only used for arrows and combination of modifier keys. + * @param {Event} e Event object + */ + onKeyDown: function(e) { + if (!this.isEditing) { + return; + } + var keyMap = this.direction === 'rtl' ? this.keysMapRtl : this.keysMap; + if (e.keyCode in keyMap) { + this[keyMap[e.keyCode]](e); + } + else if ((e.keyCode in this.ctrlKeysMapDown) && (e.ctrlKey || e.metaKey)) { + this[this.ctrlKeysMapDown[e.keyCode]](e); + } + else { + return; + } + e.stopImmediatePropagation(); + e.preventDefault(); + if (e.keyCode >= 33 && e.keyCode <= 40) { + // if i press an arrow key just update selection + this.inCompositionMode = false; + this.clearContextTop(); + this.renderCursorOrSelection(); + } + else { + this.canvas && this.canvas.requestRenderAll(); + } + }, + + /** + * Handles keyup event + * We handle KeyUp because ie11 and edge have difficulties copy/pasting + * if a copy/cut event fired, keyup is dismissed + * @param {Event} e Event object + */ + onKeyUp: function(e) { + if (!this.isEditing || this._copyDone || this.inCompositionMode) { + this._copyDone = false; + return; + } + if ((e.keyCode in this.ctrlKeysMapUp) && (e.ctrlKey || e.metaKey)) { + this[this.ctrlKeysMapUp[e.keyCode]](e); + } + else { + return; + } + e.stopImmediatePropagation(); + e.preventDefault(); + this.canvas && this.canvas.requestRenderAll(); + }, + + /** + * Handles onInput event + * @param {Event} e Event object + */ + onInput: function(e) { + var fromPaste = this.fromPaste; + this.fromPaste = false; + e && e.stopPropagation(); + if (!this.isEditing) { + return; + } + // decisions about style changes. + var nextText = this._splitTextIntoLines(this.hiddenTextarea.value).graphemeText, + charCount = this._text.length, + nextCharCount = nextText.length, + removedText, insertedText, + charDiff = nextCharCount - charCount, + selectionStart = this.selectionStart, selectionEnd = this.selectionEnd, + selection = selectionStart !== selectionEnd, + copiedStyle, removeFrom, removeTo; + if (this.hiddenTextarea.value === '') { + this.styles = { }; + this.updateFromTextArea(); + this.fire('changed'); + if (this.canvas) { + this.canvas.fire('text:changed', { target: this }); + this.canvas.requestRenderAll(); + } + return; + } + + var textareaSelection = this.fromStringToGraphemeSelection( + this.hiddenTextarea.selectionStart, + this.hiddenTextarea.selectionEnd, + this.hiddenTextarea.value + ); + var backDelete = selectionStart > textareaSelection.selectionStart; + + if (selection) { + removedText = this._text.slice(selectionStart, selectionEnd); + charDiff += selectionEnd - selectionStart; + } + else if (nextCharCount < charCount) { + if (backDelete) { + removedText = this._text.slice(selectionEnd + charDiff, selectionEnd); + } + else { + removedText = this._text.slice(selectionStart, selectionStart - charDiff); + } + } + insertedText = nextText.slice(textareaSelection.selectionEnd - charDiff, textareaSelection.selectionEnd); + if (removedText && removedText.length) { + if (insertedText.length) { + // let's copy some style before deleting. + // we want to copy the style before the cursor OR the style at the cursor if selection + // is bigger than 0. + copiedStyle = this.getSelectionStyles(selectionStart, selectionStart + 1, false); + // now duplicate the style one for each inserted text. + copiedStyle = insertedText.map(function() { + // this return an array of references, but that is fine since we are + // copying the style later. + return copiedStyle[0]; }); - }; -})(typeof exports !== 'undefined' ? exports : window); + } + if (selection) { + removeFrom = selectionStart; + removeTo = selectionEnd; + } + else if (backDelete) { + // detect differences between forwardDelete and backDelete + removeFrom = selectionEnd - removedText.length; + removeTo = selectionEnd; + } + else { + removeFrom = selectionEnd; + removeTo = selectionEnd + removedText.length; + } + this.removeStyleFromTo(removeFrom, removeTo); + } + if (insertedText.length) { + if (fromPaste && insertedText.join('') === fabric.copiedText && !fabric.disableStyleCopyPaste) { + copiedStyle = fabric.copiedTextStyle; + } + this.insertNewStyleBlock(insertedText, selectionStart, copiedStyle); + } + this.updateFromTextArea(); + this.fire('changed'); + if (this.canvas) { + this.canvas.fire('text:changed', { target: this }); + this.canvas.requestRenderAll(); + } + }, + /** + * Composition start + */ + onCompositionStart: function() { + this.inCompositionMode = true; + }, + + /** + * Composition end + */ + onCompositionEnd: function() { + this.inCompositionMode = false; + }, + + // /** + // * Composition update + // */ + onCompositionUpdate: function(e) { + this.compositionStart = e.target.selectionStart; + this.compositionEnd = e.target.selectionEnd; + this.updateTextareaPosition(); + }, + + /** + * Copies selected text + * @param {Event} e Event object + */ + copy: function() { + if (this.selectionStart === this.selectionEnd) { + //do not cut-copy if no selection + return; + } + + fabric.copiedText = this.getSelectedText(); + if (!fabric.disableStyleCopyPaste) { + fabric.copiedTextStyle = this.getSelectionStyles(this.selectionStart, this.selectionEnd, true); + } + else { + fabric.copiedTextStyle = null; + } + this._copyDone = true; + }, + + /** + * Pastes text + * @param {Event} e Event object + */ + paste: function() { + this.fromPaste = true; + }, + + /** + * @private + * @param {Event} e Event object + * @return {Object} Clipboard data object + */ + _getClipboardData: function(e) { + return (e && e.clipboardData) || fabric.window.clipboardData; + }, + + /** + * Finds the width in pixels before the cursor on the same line + * @private + * @param {Number} lineIndex + * @param {Number} charIndex + * @return {Number} widthBeforeCursor width before cursor + */ + _getWidthBeforeCursor: function(lineIndex, charIndex) { + var widthBeforeCursor = this._getLineLeftOffset(lineIndex), bound; + + if (charIndex > 0) { + bound = this.__charBounds[lineIndex][charIndex - 1]; + widthBeforeCursor += bound.left + bound.width; + } + return widthBeforeCursor; + }, + + /** + * Gets start offset of a selection + * @param {Event} e Event object + * @param {Boolean} isRight + * @return {Number} + */ + getDownCursorOffset: function(e, isRight) { + var selectionProp = this._getSelectionForOffset(e, isRight), + cursorLocation = this.get2DCursorLocation(selectionProp), + lineIndex = cursorLocation.lineIndex; + // if on last line, down cursor goes to end of line + if (lineIndex === this._textLines.length - 1 || e.metaKey || e.keyCode === 34) { + // move to the end of a text + return this._text.length - selectionProp; + } + var charIndex = cursorLocation.charIndex, + widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex), + indexOnOtherLine = this._getIndexOnLine(lineIndex + 1, widthBeforeCursor), + textAfterCursor = this._textLines[lineIndex].slice(charIndex); + return textAfterCursor.length + indexOnOtherLine + 1 + this.missingNewlineOffset(lineIndex); + }, + + /** + * private + * Helps finding if the offset should be counted from Start or End + * @param {Event} e Event object + * @param {Boolean} isRight + * @return {Number} + */ + _getSelectionForOffset: function(e, isRight) { + if (e.shiftKey && this.selectionStart !== this.selectionEnd && isRight) { + return this.selectionEnd; + } + else { + return this.selectionStart; + } + }, + + /** + * @param {Event} e Event object + * @param {Boolean} isRight + * @return {Number} + */ + getUpCursorOffset: function(e, isRight) { + var selectionProp = this._getSelectionForOffset(e, isRight), + cursorLocation = this.get2DCursorLocation(selectionProp), + lineIndex = cursorLocation.lineIndex; + if (lineIndex === 0 || e.metaKey || e.keyCode === 33) { + // if on first line, up cursor goes to start of line + return -selectionProp; + } + var charIndex = cursorLocation.charIndex, + widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex), + indexOnOtherLine = this._getIndexOnLine(lineIndex - 1, widthBeforeCursor), + textBeforeCursor = this._textLines[lineIndex].slice(0, charIndex), + missingNewlineOffset = this.missingNewlineOffset(lineIndex - 1); + // return a negative offset + return -this._textLines[lineIndex - 1].length + + indexOnOtherLine - textBeforeCursor.length + (1 - missingNewlineOffset); + }, + + /** + * for a given width it founds the matching character. + * @private + */ + _getIndexOnLine: function(lineIndex, width) { + + var line = this._textLines[lineIndex], + lineLeftOffset = this._getLineLeftOffset(lineIndex), + widthOfCharsOnLine = lineLeftOffset, + indexOnLine = 0, charWidth, foundMatch; + + for (var j = 0, jlen = line.length; j < jlen; j++) { + charWidth = this.__charBounds[lineIndex][j].width; + widthOfCharsOnLine += charWidth; + if (widthOfCharsOnLine > width) { + foundMatch = true; + var leftEdge = widthOfCharsOnLine - charWidth, + rightEdge = widthOfCharsOnLine, + offsetFromLeftEdge = Math.abs(leftEdge - width), + offsetFromRightEdge = Math.abs(rightEdge - width); -//@ts-nocheck -/** - * Render a round control, as per fabric features. - * This function is written to respect object properties like transparentCorners, cornerSize - * cornerColor, cornerStrokeColor - * plus the addition of offsetY and offsetX. - * @param {CanvasRenderingContext2D} ctx context to render on - * @param {Number} left x coordinate where the control center should be - * @param {Number} top y coordinate where the control center should be - * @param {Object} styleOverride override for fabric.Object controls style - * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls - */ -function renderCircleControl(ctx, left, top, styleOverride, fabricObject) { - styleOverride = styleOverride || {}; - var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize, ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize, transparentCorners = typeof styleOverride.transparentCorners !== 'undefined' - ? styleOverride.transparentCorners - : fabricObject.transparentCorners, methodName = transparentCorners ? 'stroke' : 'fill', stroke = !transparentCorners && - (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor), myLeft = left, myTop = top, size; - ctx.save(); - ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor; - ctx.strokeStyle = - styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor; - // as soon as fabric react v5, remove ie11, use proper ellipse code. - if (xSize > ySize) { - size = xSize; - ctx.scale(1.0, ySize / xSize); - myTop = (top * xSize) / ySize; + indexOnLine = offsetFromRightEdge < offsetFromLeftEdge ? j : (j - 1); + break; + } } - else if (ySize > xSize) { - size = ySize; - ctx.scale(xSize / ySize, 1.0); - myLeft = (left * ySize) / xSize; + + // reached end + if (!foundMatch) { + indexOnLine = line.length - 1; } - else { - size = xSize; + + return indexOnLine; + }, + + + /** + * Moves cursor down + * @param {Event} e Event object + */ + moveCursorDown: function(e) { + if (this.selectionStart >= this._text.length && this.selectionEnd >= this._text.length) { + return; + } + this._moveCursorUpOrDown('Down', e); + }, + + /** + * Moves cursor up + * @param {Event} e Event object + */ + moveCursorUp: function(e) { + if (this.selectionStart === 0 && this.selectionEnd === 0) { + return; + } + this._moveCursorUpOrDown('Up', e); + }, + + /** + * Moves cursor up or down, fires the events + * @param {String} direction 'Up' or 'Down' + * @param {Event} e Event object + */ + _moveCursorUpOrDown: function(direction, e) { + // getUpCursorOffset + // getDownCursorOffset + var action = 'get' + direction + 'CursorOffset', + offset = this[action](e, this._selectionDirection === 'right'); + if (e.shiftKey) { + this.moveCursorWithShift(offset); } - // this is still wrong - ctx.lineWidth = 1; - ctx.beginPath(); - ctx.arc(myLeft, myTop, size / 2, 0, 2 * Math.PI, false); - ctx[methodName](); - if (stroke) { - ctx.stroke(); + else { + this.moveCursorWithoutShift(offset); } - ctx.restore(); -} -/** - * Render a square control, as per fabric features. - * This function is written to respect object properties like transparentCorners, cornerSize - * cornerColor, cornerStrokeColor - * plus the addition of offsetY and offsetX. - * @param {CanvasRenderingContext2D} ctx context to render on - * @param {Number} left x coordinate where the control center should be - * @param {Number} top y coordinate where the control center should be - * @param {Object} styleOverride override for fabric.Object controls style - * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls - */ -function renderSquareControl(ctx, left, top, styleOverride, fabricObject) { - styleOverride = styleOverride || {}; - var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize, ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize, transparentCorners = typeof styleOverride.transparentCorners !== 'undefined' - ? styleOverride.transparentCorners - : fabricObject.transparentCorners, methodName = transparentCorners ? 'stroke' : 'fill', stroke = !transparentCorners && - (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor), xSizeBy2 = xSize / 2, ySizeBy2 = ySize / 2; - ctx.save(); - ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor; - ctx.strokeStyle = - styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor; - // this is still wrong - ctx.lineWidth = 1; - ctx.translate(left, top); - // angle is relative to canvas plane - var angle = fabricObject.getTotalAngle(); - ctx.rotate(degreesToRadians$1(angle)); - // this does not work, and fixed with ( && ) does not make sense. - // to have real transparent corners we need the controls on upperCanvas - // transparentCorners || ctx.clearRect(-xSizeBy2, -ySizeBy2, xSize, ySize); - ctx[methodName + 'Rect'](-xSizeBy2, -ySizeBy2, xSize, ySize); - if (stroke) { - ctx.strokeRect(-xSizeBy2, -ySizeBy2, xSize, ySize); + if (offset !== 0) { + this.setSelectionInBoundaries(); + this.abortCursorAnimation(); + this._currentCursorOpacity = 1; + this.initDelayedCursor(); + this._fireSelectionChanged(); + this._updateTextarea(); } - ctx.restore(); -} + }, -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}); - function Control(options) { - for (var i in options) { - this[i] = options[i]; - } - } - fabric.Control = Control; - fabric.Control.prototype = /** @lends fabric.Control.prototype */ { - /** - * keep track of control visibility. - * mainly for backward compatibility. - * if you do not want to see a control, you can remove it - * from the controlset. - * @type {Boolean} - * @default true - */ - visible: true, - /** - * Name of the action that the control will likely execute. - * This is optional. FabricJS uses to identify what the user is doing for some - * extra optimizations. If you are writing a custom control and you want to know - * somewhere else in the code what is going on, you can use this string here. - * you can also provide a custom getActionName if your control run multiple actions - * depending on some external state. - * default to scale since is the most common, used on 4 corners by default - * @type {String} - * @default 'scale' - */ - actionName: 'scale', - /** - * Drawing angle of the control. - * NOT used for now, but name marked as needed for internal logic - * example: to reuse the same drawing function for different rotated controls - * @type {Number} - * @default 0 - */ - angle: 0, - /** - * Relative position of the control. X - * 0,0 is the center of the Object, while -0.5 (left) or 0.5 (right) are the extremities - * of the bounding box. - * @type {Number} - * @default 0 - */ - x: 0, - /** - * Relative position of the control. Y - * 0,0 is the center of the Object, while -0.5 (top) or 0.5 (bottom) are the extremities - * of the bounding box. - * @type {Number} - * @default 0 - */ - y: 0, - /** - * Horizontal offset of the control from the defined position. In pixels - * Positive offset moves the control to the right, negative to the left. - * It used when you want to have position of control that does not scale with - * the bounding box. Example: rotation control is placed at x:0, y: 0.5 on - * the boundindbox, with an offset of 30 pixels vertically. Those 30 pixels will - * stay 30 pixels no matter how the object is big. Another example is having 2 - * controls in the corner, that stay in the same position when the object scale. - * of the bounding box. - * @type {Number} - * @default 0 - */ - offsetX: 0, - /** - * Vertical offset of the control from the defined position. In pixels - * Positive offset moves the control to the bottom, negative to the top. - * @type {Number} - * @default 0 - */ - offsetY: 0, - /** - * Sets the length of the control. If null, defaults to object's cornerSize. - * Expects both sizeX and sizeY to be set when set. - * @type {?Number} - * @default null - */ - sizeX: null, - /** - * Sets the height of the control. If null, defaults to object's cornerSize. - * Expects both sizeX and sizeY to be set when set. - * @type {?Number} - * @default null - */ - sizeY: null, - /** - * Sets the length of the touch area of the control. If null, defaults to object's touchCornerSize. - * Expects both touchSizeX and touchSizeY to be set when set. - * @type {?Number} - * @default null - */ - touchSizeX: null, - /** - * Sets the height of the touch area of the control. If null, defaults to object's touchCornerSize. - * Expects both touchSizeX and touchSizeY to be set when set. - * @type {?Number} - * @default null - */ - touchSizeY: null, - /** - * Css cursor style to display when the control is hovered. - * if the method `cursorStyleHandler` is provided, this property is ignored. - * @type {String} - * @default 'crosshair' - */ - cursorStyle: 'crosshair', - /** - * If controls has an offsetY or offsetX, draw a line that connects - * the control to the bounding box - * @type {Boolean} - * @default false - */ - withConnection: false, - /** - * The control actionHandler, provide one to handle action ( control being moved ) - * @param {Event} eventData the native mouse event - * @param {Object} transformData properties of the current transform - * @param {Number} x x position of the cursor - * @param {Number} y y position of the cursor - * @return {Boolean} true if the action/event modified the object - */ - actionHandler: function ( /* eventData, transformData, x, y */) { }, - /** - * The control handler for mouse down, provide one to handle mouse down on control - * @param {Event} eventData the native mouse event - * @param {Object} transformData properties of the current transform - * @param {Number} x x position of the cursor - * @param {Number} y y position of the cursor - * @return {Boolean} true if the action/event modified the object - */ - mouseDownHandler: function ( /* eventData, transformData, x, y */) { }, - /** - * The control mouseUpHandler, provide one to handle an effect on mouse up. - * @param {Event} eventData the native mouse event - * @param {Object} transformData properties of the current transform - * @param {Number} x x position of the cursor - * @param {Number} y y position of the cursor - * @return {Boolean} true if the action/event modified the object - */ - mouseUpHandler: function ( /* eventData, transformData, x, y */) { }, - /** - * Returns control actionHandler - * @param {Event} eventData the native mouse event - * @param {fabric.Object} fabricObject on which the control is displayed - * @param {fabric.Control} control control for which the action handler is being asked - * @return {Function} the action handler - */ - getActionHandler: function ( /* eventData, fabricObject, control */) { - return this.actionHandler; - }, - /** - * Returns control mouseDown handler - * @param {Event} eventData the native mouse event - * @param {fabric.Object} fabricObject on which the control is displayed - * @param {fabric.Control} control control for which the action handler is being asked - * @return {Function} the action handler - */ - getMouseDownHandler: function ( /* eventData, fabricObject, control */) { - return this.mouseDownHandler; - }, - /** - * Returns control mouseUp handler - * @param {Event} eventData the native mouse event - * @param {fabric.Object} fabricObject on which the control is displayed - * @param {fabric.Control} control control for which the action handler is being asked - * @return {Function} the action handler - */ - getMouseUpHandler: function ( /* eventData, fabricObject, control */) { - return this.mouseUpHandler; - }, - /** - * Returns control cursorStyle for css using cursorStyle. If you need a more elaborate - * function you can pass one in the constructor - * the cursorStyle property - * @param {Event} eventData the native mouse event - * @param {fabric.Control} control the current control ( likely this) - * @param {fabric.Object} object on which the control is displayed - * @return {String} - */ - cursorStyleHandler: function (eventData, control /* fabricObject */) { - return control.cursorStyle; - }, - /** - * Returns the action name. The basic implementation just return the actionName property. - * @param {Event} eventData the native mouse event - * @param {fabric.Control} control the current control ( likely this) - * @param {fabric.Object} object on which the control is displayed - * @return {String} - */ - getActionName: function (eventData, control /* fabricObject */) { - return control.actionName; - }, - /** - * Returns controls visibility - * @param {fabric.Object} object on which the control is displayed - * @param {String} controlKey key where the control is memorized on the - * @return {Boolean} - */ - getVisibility: function (fabricObject, controlKey) { - var objectVisibility = fabricObject._controlsVisibility; - if (objectVisibility && - typeof objectVisibility[controlKey] !== 'undefined') { - return objectVisibility[controlKey]; - } - return this.visible; - }, - /** - * Sets controls visibility - * @param {Boolean} visibility for the object - * @return {Void} - */ - setVisibility: function (visibility /* name, fabricObject */) { - this.visible = visibility; - }, - positionHandler: function (dim, finalMatrix /*, fabricObject, currentControl */) { - var point = fabric.util.transformPoint({ - x: this.x * dim.x + this.offsetX, - y: this.y * dim.y + this.offsetY, - }, finalMatrix); - return point; - }, - /** - * Returns the coords for this control based on object values. - * @param {Number} objectAngle angle from the fabric object holding the control - * @param {Number} objectCornerSize cornerSize from the fabric object holding the control (or touchCornerSize if - * isTouch is true) - * @param {Number} centerX x coordinate where the control center should be - * @param {Number} centerY y coordinate where the control center should be - * @param {boolean} isTouch true if touch corner, false if normal corner - */ - calcCornerCoords: function (objectAngle, objectCornerSize, centerX, centerY, isTouch) { - var cosHalfOffset, sinHalfOffset, cosHalfOffsetComp, sinHalfOffsetComp, xSize = isTouch ? this.touchSizeX : this.sizeX, ySize = isTouch ? this.touchSizeY : this.sizeY; - if (xSize && ySize && xSize !== ySize) { - // handle rectangular corners - var controlTriangleAngle = Math.atan2(ySize, xSize); - var cornerHypotenuse = Math.sqrt(xSize * xSize + ySize * ySize) / 2; - var newTheta = controlTriangleAngle - fabric.util.degreesToRadians(objectAngle); - var newThetaComp = Math.PI / 2 - - controlTriangleAngle - - fabric.util.degreesToRadians(objectAngle); - cosHalfOffset = cornerHypotenuse * fabric.util.cos(newTheta); - sinHalfOffset = cornerHypotenuse * fabric.util.sin(newTheta); - // use complementary angle for two corners - cosHalfOffsetComp = cornerHypotenuse * fabric.util.cos(newThetaComp); - sinHalfOffsetComp = cornerHypotenuse * fabric.util.sin(newThetaComp); - } - else { - // handle square corners - // use default object corner size unless size is defined - var cornerSize = xSize && ySize ? xSize : objectCornerSize; - /* 0.7071067812 stands for sqrt(2)/2 */ - cornerHypotenuse = cornerSize * 0.7071067812; - // complementary angles are equal since they're both 45 degrees - var newTheta = fabric.util.degreesToRadians(45 - objectAngle); - cosHalfOffset = cosHalfOffsetComp = - cornerHypotenuse * fabric.util.cos(newTheta); - sinHalfOffset = sinHalfOffsetComp = - cornerHypotenuse * fabric.util.sin(newTheta); - } - return { - tl: { - x: centerX - sinHalfOffsetComp, - y: centerY - cosHalfOffsetComp, - }, - tr: { - x: centerX + cosHalfOffset, - y: centerY - sinHalfOffset, - }, - bl: { - x: centerX - cosHalfOffset, - y: centerY + sinHalfOffset, - }, - br: { - x: centerX + sinHalfOffsetComp, - y: centerY + cosHalfOffsetComp, - }, - }; - }, - /** - * Render function for the control. - * When this function runs the context is unscaled. unrotate. Just retina scaled. - * all the functions will have to translate to the point left,top before starting Drawing - * if they want to draw a control where the position is detected. - * left and top are the result of the positionHandler function - * @param {RenderingContext2D} ctx the context where the control will be drawn - * @param {Number} left position of the canvas where we are about to render the control. - * @param {Number} top position of the canvas where we are about to render the control. - * @param {Object} styleOverride - * @param {fabric.Object} fabricObject the object where the control is about to be rendered - */ - render: function (ctx, left, top, styleOverride, fabricObject) { - styleOverride = styleOverride || {}; - switch (styleOverride.cornerStyle || fabricObject.cornerStyle) { - case 'circle': - renderCircleControl.call(this, ctx, left, top, styleOverride, fabricObject); - break; - default: - renderSquareControl.call(this, ctx, left, top, styleOverride, fabricObject); - } - }, - }; -})(typeof exports !== 'undefined' ? exports : window); + /** + * Moves cursor with shift + * @param {Number} offset + */ + moveCursorWithShift: function(offset) { + var newSelection = this._selectionDirection === 'left' + ? this.selectionStart + offset + : this.selectionEnd + offset; + this.setSelectionStartEndWithShift(this.selectionStart, this.selectionEnd, newSelection); + return offset !== 0; + }, -//@ts-nocheck -(function (global) { - var fabric = global.fabric || (global.fabric = {}), scaleMap = ['e', 'se', 's', 'sw', 'w', 'nw', 'n', 'ne', 'e'], skewMap = ['ns', 'nesw', 'ew', 'nwse'], controls = {}, LEFT = 'left', TOP = 'top', RIGHT = 'right', BOTTOM = 'bottom', CENTER = 'center', opposite = { - top: BOTTOM, - bottom: TOP, - left: RIGHT, - right: LEFT, - center: CENTER, - }, radiansToDegrees = fabric.util.radiansToDegrees, sign = Math.sign || - function (x) { - return (x > 0) - (x < 0) || +x; - }; - /** - * Combine control position and object angle to find the control direction compared - * to the object center. - * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls - * @param {fabric.Control} control the control class - * @return {Number} 0 - 7 a quadrant number - */ - function findCornerQuadrant(fabricObject, control) { - // angle is relative to canvas plane - var angle = fabricObject.getTotalAngle(); - var cornerAngle = angle + radiansToDegrees(Math.atan2(control.y, control.x)) + 360; - return Math.round((cornerAngle % 360) / 45); + /** + * Moves cursor up without shift + * @param {Number} offset + */ + moveCursorWithoutShift: function(offset) { + if (offset < 0) { + this.selectionStart += offset; + this.selectionEnd = this.selectionStart; } - /** - * Inspect event and fabricObject properties to understand if the scaling action - * @param {Event} eventData from the user action - * @param {fabric.Object} fabricObject the fabric object about to scale - * @return {Boolean} true if scale is proportional - */ - function scaleIsProportional(eventData, fabricObject) { - var canvas = fabricObject.canvas, uniScaleKey = canvas.uniScaleKey, uniformIsToggled = eventData[uniScaleKey]; - return ((canvas.uniformScaling && !uniformIsToggled) || - (!canvas.uniformScaling && uniformIsToggled)); + else { + this.selectionEnd += offset; + this.selectionStart = this.selectionEnd; } - /** - * Checks if transform is centered - * @param {Object} transform transform data - * @return {Boolean} true if transform is centered - */ - function isTransformCentered(transform) { - return transform.originX === CENTER && transform.originY === CENTER; + return offset !== 0; + }, + + /** + * Moves cursor left + * @param {Event} e Event object + */ + moveCursorLeft: function(e) { + if (this.selectionStart === 0 && this.selectionEnd === 0) { + return; + } + this._moveCursorLeftOrRight('Left', e); + }, + + /** + * @private + * @return {Boolean} true if a change happened + */ + _move: function(e, prop, direction) { + var newValue; + if (e.altKey) { + newValue = this['findWordBoundary' + direction](this[prop]); + } + else if (e.metaKey || e.keyCode === 35 || e.keyCode === 36 ) { + newValue = this['findLineBoundary' + direction](this[prop]); } - /** - * Inspect fabricObject to understand if the current scaling action is allowed - * @param {fabric.Object} fabricObject the fabric object about to scale - * @param {String} by 'x' or 'y' or '' - * @param {Boolean} scaleProportionally true if we are trying to scale proportionally - * @return {Boolean} true if scaling is not allowed at current conditions - */ - function scalingIsForbidden(fabricObject, by, scaleProportionally) { - var lockX = fabricObject.lockScalingX, lockY = fabricObject.lockScalingY; - if (lockX && lockY) { - return true; - } - if (!by && (lockX || lockY) && scaleProportionally) { - return true; - } - if (lockX && by === 'x') { - return true; - } - if (lockY && by === 'y') { - return true; - } - return false; + else { + this[prop] += direction === 'Left' ? -1 : 1; + return true; } - /** - * return the correct cursor style for the scale action - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} a valid css string for the cursor - */ - function scaleCursorStyleHandler(eventData, control, fabricObject) { - var notAllowed = 'not-allowed', scaleProportionally = scaleIsProportional(eventData, fabricObject), by = ''; - if (control.x !== 0 && control.y === 0) { - by = 'x'; - } - else if (control.x === 0 && control.y !== 0) { - by = 'y'; - } - if (scalingIsForbidden(fabricObject, by, scaleProportionally)) { - return notAllowed; - } - var n = findCornerQuadrant(fabricObject, control); - return scaleMap[n] + '-resize'; + if (typeof newValue !== undefined && this[prop] !== newValue) { + this[prop] = newValue; + return true; } - /** - * return the correct cursor style for the skew action - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} a valid css string for the cursor - */ - function skewCursorStyleHandler(eventData, control, fabricObject) { - var notAllowed = 'not-allowed'; - if (control.x !== 0 && fabricObject.lockSkewingY) { - return notAllowed; - } - if (control.y !== 0 && fabricObject.lockSkewingX) { - return notAllowed; - } - var n = findCornerQuadrant(fabricObject, control) % 4; - return skewMap[n] + '-resize'; + }, + + /** + * @private + */ + _moveLeft: function(e, prop) { + return this._move(e, prop, 'Left'); + }, + + /** + * @private + */ + _moveRight: function(e, prop) { + return this._move(e, prop, 'Right'); + }, + + /** + * Moves cursor left without keeping selection + * @param {Event} e + */ + moveCursorLeftWithoutShift: function(e) { + var change = true; + this._selectionDirection = 'left'; + + // only move cursor when there is no selection, + // otherwise we discard it, and leave cursor on same place + if (this.selectionEnd === this.selectionStart && this.selectionStart !== 0) { + change = this._moveLeft(e, 'selectionStart'); + } - /** - * Combine skew and scale style handlers to cover fabric standard use case - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} a valid css string for the cursor - */ - function scaleSkewCursorStyleHandler(eventData, control, fabricObject) { - if (eventData[fabricObject.canvas.altActionKey]) { - return controls.skewCursorStyleHandler(eventData, control, fabricObject); - } - return controls.scaleCursorStyleHandler(eventData, control, fabricObject); + this.selectionEnd = this.selectionStart; + return change; + }, + + /** + * Moves cursor left while keeping selection + * @param {Event} e + */ + moveCursorLeftWithShift: function(e) { + if (this._selectionDirection === 'right' && this.selectionStart !== this.selectionEnd) { + return this._moveLeft(e, 'selectionEnd'); + } + else if (this.selectionStart !== 0){ + this._selectionDirection = 'left'; + return this._moveLeft(e, 'selectionStart'); + } + }, + + /** + * Moves cursor right + * @param {Event} e Event object + */ + moveCursorRight: function(e) { + if (this.selectionStart >= this._text.length && this.selectionEnd >= this._text.length) { + return; + } + this._moveCursorLeftOrRight('Right', e); + }, + + /** + * Moves cursor right or Left, fires event + * @param {String} direction 'Left', 'Right' + * @param {Event} e Event object + */ + _moveCursorLeftOrRight: function(direction, e) { + var actionName = 'moveCursor' + direction + 'With'; + this._currentCursorOpacity = 1; + + if (e.shiftKey) { + actionName += 'Shift'; } - /** - * Inspect event, control and fabricObject to return the correct action name - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} an action name - */ - function scaleOrSkewActionName(eventData, control, fabricObject) { - var isAlternative = eventData[fabricObject.canvas.altActionKey]; - if (control.x === 0) { - // then is scaleY or skewX - return isAlternative ? 'skewX' : 'scaleY'; - } - if (control.y === 0) { - // then is scaleY or skewX - return isAlternative ? 'skewY' : 'scaleX'; - } + else { + actionName += 'outShift'; } - /** - * Find the correct style for the control that is used for rotation. - * this function is very simple and it just take care of not-allowed or standard cursor - * @param {Event} eventData the javascript event that is causing the scale - * @param {fabric.Control} control the control that is interested in the action - * @param {fabric.Object} fabricObject the fabric object that is interested in the action - * @return {String} a valid css string for the cursor - */ - function rotationStyleHandler(eventData, control, fabricObject) { - if (fabricObject.lockRotation) { - return 'not-allowed'; - } - return control.cursorStyle; + if (this[actionName](e)) { + this.abortCursorAnimation(); + this.initDelayedCursor(); + this._fireSelectionChanged(); + this._updateTextarea(); } - function commonEventInfo(eventData, transform, x, y) { - return { - e: eventData, - transform: transform, - pointer: { - x: x, - y: y, - }, - }; + }, + + /** + * Moves cursor right while keeping selection + * @param {Event} e + */ + moveCursorRightWithShift: function(e) { + if (this._selectionDirection === 'left' && this.selectionStart !== this.selectionEnd) { + return this._moveRight(e, 'selectionStart'); + } + else if (this.selectionEnd !== this._text.length) { + this._selectionDirection = 'right'; + return this._moveRight(e, 'selectionEnd'); + } + }, + + /** + * Moves cursor right without keeping selection + * @param {Event} e Event object + */ + moveCursorRightWithoutShift: function(e) { + var changed = true; + this._selectionDirection = 'right'; + + if (this.selectionStart === this.selectionEnd) { + changed = this._moveRight(e, 'selectionStart'); + this.selectionEnd = this.selectionStart; } - /** - * Wrap an action handler with saving/restoring object position on the transform. - * this is the code that permits to objects to keep their position while transforming. - * @param {Function} actionHandler the function to wrap - * @return {Function} a function with an action handler signature - */ - function wrapWithFixedAnchor(actionHandler) { - return function (eventData, transform, x, y) { - var target = transform.target, centerPoint = target.getRelativeCenterPoint(), constraint = target.translateToOriginPoint(centerPoint, transform.originX, transform.originY), actionPerformed = actionHandler(eventData, transform, x, y); - target.setPositionByOrigin(constraint, transform.originX, transform.originY); - return actionPerformed; - }; + else { + this.selectionStart = this.selectionEnd; } + return changed; + }, + + /** + * Removes characters from start/end + * start/end ar per grapheme position in _text array. + * + * @param {Number} start + * @param {Number} end default to start + 1 + */ + removeChars: function(start, end) { + if (typeof end === 'undefined') { + end = start + 1; + } + this.removeStyleFromTo(start, end); + this._text.splice(start, end - start); + this.text = this._text.join(''); + this.set('dirty', true); + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + this.setCoords(); + } + this._removeExtraneousStyles(); + }, + + /** + * insert characters at start position, before start position. + * start equal 1 it means the text get inserted between actual grapheme 0 and 1 + * if style array is provided, it must be as the same length of text in graphemes + * if end is provided and is bigger than start, old text is replaced. + * start/end ar per grapheme position in _text array. + * + * @param {String} text text to insert + * @param {Array} style array of style objects + * @param {Number} start + * @param {Number} end default to start + 1 + */ + insertChars: function(text, style, start, end) { + if (typeof end === 'undefined') { + end = start; + } + if (end > start) { + this.removeStyleFromTo(start, end); + } + var graphemes = fabric.util.string.graphemeSplit(text); + this.insertNewStyleBlock(graphemes, start, style); + this._text = [].concat(this._text.slice(0, start), graphemes, this._text.slice(end)); + this.text = this._text.join(''); + this.set('dirty', true); + if (this._shouldClearDimensionCache()) { + this.initDimensions(); + this.setCoords(); + } + this._removeExtraneousStyles(); + }, + +}); + + +/* _TO_SVG_START_ */ +(function() { + var toFixed = fabric.util.toFixed, + multipleSpacesRegex = / +/g; + + fabric.util.object.extend(fabric.Text.prototype, /** @lends fabric.Text.prototype */ { + /** - * Wrap an action handler with firing an event if the action is performed - * @param {Function} actionHandler the function to wrap - * @return {Function} a function with an action handler signature + * Returns SVG representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance */ - function wrapWithFireEvent(eventName, actionHandler) { - return function (eventData, transform, x, y) { - var actionPerformed = actionHandler(eventData, transform, x, y); - if (actionPerformed) { - fireEvent(eventName, commonEventInfo(eventData, transform, x, y)); - } - return actionPerformed; - }; - } + _toSVG: function() { + var offsets = this._getSVGLeftTopOffsets(), + textAndBg = this._getSVGTextAndBg(offsets.textTop, offsets.textLeft); + return this._wrapSVGTextAndBg(textAndBg); + }, + /** - * Transforms a point described by x and y in a distance from the top left corner of the object - * bounding box. - * @param {Object} transform - * @param {String} originX - * @param {String} originY - * @param {number} x - * @param {number} y - * @return {Fabric.Point} the normalized point - */ - function getLocalPoint(transform, originX, originY, x, y) { - var target = transform.target, control = target.controls[transform.corner], zoom = target.canvas.getZoom(), padding = target.padding / zoom, localPoint = target.normalizePoint(new Point(x, y), originX, originY); - if (localPoint.x >= padding) { - localPoint.x -= padding; - } - if (localPoint.x <= -padding) { - localPoint.x += padding; - } - if (localPoint.y >= padding) { - localPoint.y -= padding; - } - if (localPoint.y <= padding) { - localPoint.y += padding; - } - localPoint.x -= control.offsetX; - localPoint.y -= control.offsetY; - return localPoint; - } + * Returns svg representation of an instance + * @param {Function} [reviver] Method for further parsing of svg representation. + * @return {String} svg representation of an instance + */ + toSVG: function(reviver) { + return this._createBaseSVGMarkup( + this._toSVG(), + { reviver: reviver, noStyle: true, withShadow: true } + ); + }, + /** - * Detect if the fabric object is flipped on one side. - * @param {fabric.Object} target - * @return {Boolean} true if one flip, but not two. + * @private */ - function targetHasOneFlip(target) { - return target.flipX !== target.flipY; - } + _getSVGLeftTopOffsets: function() { + return { + textLeft: -this.width / 2, + textTop: -this.height / 2, + lineTop: this.getHeightOfLine(0) + }; + }, + /** - * Utility function to compensate the scale factor when skew is applied on both axes * @private */ - function compensateScaleForSkew(target, oppositeSkew, scaleToCompensate, axis, reference) { - if (target[oppositeSkew] !== 0) { - var newDim = target._getTransformedDimensions()[axis]; - var newValue = (reference / newDim) * target[scaleToCompensate]; - target.set(scaleToCompensate, newValue); - } - } + _wrapSVGTextAndBg: function(textAndBg) { + var noShadow = true, + textDecoration = this.getSvgTextDecoration(this); + return [ + textAndBg.textBgRects.join(''), + '\t\t', + textAndBg.textSpans.join(''), + '\n' + ]; + }, + /** - * Action handler for skewing on the X axis * @private - */ - function skewObjectX(eventData, transform, x, y) { - var target = transform.target, - // find how big the object would be, if there was no skewX. takes in account scaling - dimNoSkew = target._getTransformedDimensions({ - skewX: 0, - skewY: target.skewY, - }), localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), - // the mouse is in the center of the object, and we want it to stay there. - // so the object will grow twice as much as the mouse. - // this makes the skew growth to localPoint * 2 - dimNoSkew. - totalSkewSize = Math.abs(localPoint.x * 2) - dimNoSkew.x, currentSkew = target.skewX, newSkew; - if (totalSkewSize < 2) { - // let's make it easy to go back to position 0. - newSkew = 0; - } - else { - newSkew = radiansToDegrees(Math.atan2(totalSkewSize / target.scaleX, dimNoSkew.y / target.scaleY)); - // now we have to find the sign of the skew. - // it mostly depend on the origin of transformation. - if (transform.originX === LEFT && transform.originY === BOTTOM) { - newSkew = -newSkew; - } - if (transform.originX === RIGHT && transform.originY === TOP) { - newSkew = -newSkew; - } - if (targetHasOneFlip(target)) { - newSkew = -newSkew; - } - } - var hasSkewed = currentSkew !== newSkew; - if (hasSkewed) { - var dimBeforeSkewing = target._getTransformedDimensions().y; - target.set('skewX', newSkew); - compensateScaleForSkew(target, 'skewY', 'scaleY', 'y', dimBeforeSkewing); + * @param {Number} textTopOffset Text top offset + * @param {Number} textLeftOffset Text left offset + * @return {Object} + */ + _getSVGTextAndBg: function(textTopOffset, textLeftOffset) { + var textSpans = [], + textBgRects = [], + height = textTopOffset, lineOffset; + // bounding-box background + this._setSVGBg(textBgRects); + + // text and text-background + for (var i = 0, len = this._textLines.length; i < len; i++) { + lineOffset = this._getLineLeftOffset(i); + if (this.textBackgroundColor || this.styleHas('textBackgroundColor', i)) { + this._setSVGTextLineBg(textBgRects, i, textLeftOffset + lineOffset, height); } - return hasSkewed; - } + this._setSVGTextLineText(textSpans, i, textLeftOffset + lineOffset, height); + height += this.getHeightOfLine(i); + } + + return { + textSpans: textSpans, + textBgRects: textBgRects + }; + }, + /** - * Action handler for skewing on the Y axis * @private */ - function skewObjectY(eventData, transform, x, y) { - var target = transform.target, - // find how big the object would be, if there was no skewX. takes in account scaling - dimNoSkew = target._getTransformedDimensions({ - skewX: target.skewX, - skewY: 0, - }), localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y), - // the mouse is in the center of the object, and we want it to stay there. - // so the object will grow twice as much as the mouse. - // this makes the skew growth to localPoint * 2 - dimNoSkew. - totalSkewSize = Math.abs(localPoint.y * 2) - dimNoSkew.y, currentSkew = target.skewY, newSkew; - if (totalSkewSize < 2) { - // let's make it easy to go back to position 0. - newSkew = 0; + _createTextCharSpan: function(_char, styleDecl, left, top) { + var shouldUseWhitespace = _char !== _char.trim() || _char.match(multipleSpacesRegex), + styleProps = this.getSvgSpanStyles(styleDecl, shouldUseWhitespace), + fillStyles = styleProps ? 'style="' + styleProps + '"' : '', + dy = styleDecl.deltaY, dySpan = '', + NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; + if (dy) { + dySpan = ' dy="' + toFixed(dy, NUM_FRACTION_DIGITS) + '" '; + } + return [ + '', + fabric.util.string.escapeXml(_char), + '' + ].join(''); + }, + + _setSVGTextLineText: function(textSpans, lineIndex, textLeftOffset, textTopOffset) { + // set proper line offset + var lineHeight = this.getHeightOfLine(lineIndex), + isJustify = this.textAlign.indexOf('justify') !== -1, + actualStyle, + nextStyle, + charsToRender = '', + charBox, style, + boxWidth = 0, + line = this._textLines[lineIndex], + timeToRender; + + textTopOffset += lineHeight * (1 - this._fontSizeFraction) / this.lineHeight; + for (var i = 0, len = line.length - 1; i <= len; i++) { + timeToRender = i === len || this.charSpacing; + charsToRender += line[i]; + charBox = this.__charBounds[lineIndex][i]; + if (boxWidth === 0) { + textLeftOffset += charBox.kernedWidth - charBox.width; + boxWidth += charBox.width; } else { - newSkew = radiansToDegrees(Math.atan2(totalSkewSize / target.scaleY, dimNoSkew.x / target.scaleX)); - // now we have to find the sign of the skew. - // it mostly depend on the origin of transformation. - if (transform.originX === LEFT && transform.originY === BOTTOM) { - newSkew = -newSkew; - } - if (transform.originX === RIGHT && transform.originY === TOP) { - newSkew = -newSkew; - } - if (targetHasOneFlip(target)) { - newSkew = -newSkew; - } - } - var hasSkewed = currentSkew !== newSkew; - if (hasSkewed) { - var dimBeforeSkewing = target._getTransformedDimensions().x; - target.set('skewY', newSkew); - compensateScaleForSkew(target, 'skewX', 'scaleX', 'x', dimBeforeSkewing); - } - return hasSkewed; - } - /** - * Wrapped Action handler for skewing on the Y axis, takes care of the - * skew direction and determine the correct transform origin for the anchor point - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function skewHandlerX(eventData, transform, x, y) { - // step1 figure out and change transform origin. - // if skewX > 0 and originY bottom we anchor on right - // if skewX > 0 and originY top we anchor on left - // if skewX < 0 and originY bottom we anchor on left - // if skewX < 0 and originY top we anchor on right - // if skewX is 0, we look for mouse position to understand where are we going. - var target = transform.target, currentSkew = target.skewX, originX, originY = transform.originY; - if (target.lockSkewingX) { - return false; + boxWidth += charBox.kernedWidth; } - if (currentSkew === 0) { - var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y); - if (localPointFromCenter.x > 0) { - // we are pulling right, anchor left; - originX = LEFT; - } - else { - // we are pulling right, anchor right - originX = RIGHT; - } + if (isJustify && !timeToRender) { + if (this._reSpaceAndTab.test(line[i])) { + timeToRender = true; + } } - else { - if (currentSkew > 0) { - originX = originY === TOP ? LEFT : RIGHT; - } - if (currentSkew < 0) { - originX = originY === TOP ? RIGHT : LEFT; - } - // is the object flipped on one side only? swap the origin. - if (targetHasOneFlip(target)) { - originX = originX === LEFT ? RIGHT : LEFT; - } + if (!timeToRender) { + // if we have charSpacing, we render char by char + actualStyle = actualStyle || this.getCompleteStyleDeclaration(lineIndex, i); + nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1); + timeToRender = this._hasStyleChangedForSvg(actualStyle, nextStyle); } - // once we have the origin, we find the anchor point - transform.originX = originX; - var finalHandler = wrapWithFireEvent('skewing', wrapWithFixedAnchor(skewObjectX)); - return finalHandler(eventData, transform, x, y); - } - /** - * Wrapped Action handler for skewing on the Y axis, takes care of the - * skew direction and determine the correct transform origin for the anchor point - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function skewHandlerY(eventData, transform, x, y) { - // step1 figure out and change transform origin. - // if skewY > 0 and originX left we anchor on top - // if skewY > 0 and originX right we anchor on bottom - // if skewY < 0 and originX left we anchor on bottom - // if skewY < 0 and originX right we anchor on top - // if skewY is 0, we look for mouse position to understand where are we going. - var target = transform.target, currentSkew = target.skewY, originY, originX = transform.originX; - if (target.lockSkewingY) { - return false; + if (timeToRender) { + style = this._getStyleDeclaration(lineIndex, i) || { }; + textSpans.push(this._createTextCharSpan(charsToRender, style, textLeftOffset, textTopOffset)); + charsToRender = ''; + actualStyle = nextStyle; + textLeftOffset += boxWidth; + boxWidth = 0; } - if (currentSkew === 0) { - var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y); - if (localPointFromCenter.y > 0) { - // we are pulling down, anchor up; - originY = TOP; - } - else { - // we are pulling up, anchor down - originY = BOTTOM; - } + } + }, + + _pushTextBgRect: function(textBgRects, color, left, top, width, height) { + var NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS; + textBgRects.push( + '\t\t\n'); + }, + + _setSVGTextLineBg: function(textBgRects, i, leftOffset, textTopOffset) { + var line = this._textLines[i], + heightOfLine = this.getHeightOfLine(i) / this.lineHeight, + boxWidth = 0, + boxStart = 0, + charBox, currentColor, + lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor'); + for (var j = 0, jlen = line.length; j < jlen; j++) { + charBox = this.__charBounds[i][j]; + currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor'); + if (currentColor !== lastColor) { + lastColor && this._pushTextBgRect(textBgRects, lastColor, leftOffset + boxStart, + textTopOffset, boxWidth, heightOfLine); + boxStart = charBox.left; + boxWidth = charBox.width; + lastColor = currentColor; } else { - if (currentSkew > 0) { - originY = originX === LEFT ? TOP : BOTTOM; - } - if (currentSkew < 0) { - originY = originX === LEFT ? BOTTOM : TOP; - } - // is the object flipped on one side only? swap the origin. - if (targetHasOneFlip(target)) { - originY = originY === TOP ? BOTTOM : TOP; - } + boxWidth += charBox.kernedWidth; } - // once we have the origin, we find the anchor point - transform.originY = originY; - var finalHandler = wrapWithFireEvent('skewing', wrapWithFixedAnchor(skewObjectY)); - return finalHandler(eventData, transform, x, y); - } + } + currentColor && this._pushTextBgRect(textBgRects, currentColor, leftOffset + boxStart, + textTopOffset, boxWidth, heightOfLine); + }, + /** - * Action handler for rotation and snapping, without anchor point. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened + * Adobe Illustrator (at least CS5) is unable to render rgba()-based fill values + * we work around it by "moving" alpha channel into opacity attribute and setting fill's alpha to 1 + * * @private + * @param {*} value + * @return {String} */ - function rotationWithSnapping(eventData, transform, x, y) { - var t = transform, target = t.target, pivotPoint = target.translateToOriginPoint(target.getRelativeCenterPoint(), t.originX, t.originY); - if (target.lockRotation) { - return false; - } - var lastAngle = Math.atan2(t.ey - pivotPoint.y, t.ex - pivotPoint.x), curAngle = Math.atan2(y - pivotPoint.y, x - pivotPoint.x), angle = radiansToDegrees(curAngle - lastAngle + t.theta), hasRotated = true; - if (target.snapAngle > 0) { - var snapAngle = target.snapAngle, snapThreshold = target.snapThreshold || snapAngle, rightAngleLocked = Math.ceil(angle / snapAngle) * snapAngle, leftAngleLocked = Math.floor(angle / snapAngle) * snapAngle; - if (Math.abs(angle - leftAngleLocked) < snapThreshold) { - angle = leftAngleLocked; - } - else if (Math.abs(angle - rightAngleLocked) < snapThreshold) { - angle = rightAngleLocked; - } - } - // normalize angle to positive value - if (angle < 0) { - angle = 360 + angle; - } - angle %= 360; - hasRotated = target.angle !== angle; - target.angle = angle; - return hasRotated; - } + _getFillAttributes: function(value) { + var fillColor = (value && typeof value === 'string') ? new fabric.Color(value) : ''; + if (!fillColor || !fillColor.getSource() || fillColor.getAlpha() === 1) { + return 'fill="' + value + '"'; + } + return 'opacity="' + fillColor.getAlpha() + '" fill="' + fillColor.setAlpha(1).toRgb() + '"'; + }, + /** - * Basic scaling logic, reused with different constrain for scaling X,Y, freely or equally. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @param {Object} options additional information for scaling - * @param {String} options.by 'x', 'y', 'equally' or '' to indicate type of scaling - * @return {Boolean} true if some change happened * @private */ - function scaleObject(eventData, transform, x, y, options) { - options = options || {}; - var target = transform.target, lockScalingX = target.lockScalingX, lockScalingY = target.lockScalingY, by = options.by, newPoint, scaleX, scaleY, dim, scaleProportionally = scaleIsProportional(eventData, target), forbidScaling = scalingIsForbidden(target, by, scaleProportionally), signX, signY, gestureScale = transform.gestureScale; - if (forbidScaling) { - return false; - } - if (gestureScale) { - scaleX = transform.scaleX * gestureScale; - scaleY = transform.scaleY * gestureScale; - } - else { - newPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y); - // use of sign: We use sign to detect change of direction of an action. sign usually change when - // we cross the origin point with the mouse. So a scale flip for example. There is an issue when scaling - // by center and scaling using one middle control ( default: mr, mt, ml, mb), the mouse movement can easily - // cross many time the origin point and flip the object. so we need a way to filter out the noise. - // This ternary here should be ok to filter out X scaling when we want Y only and vice versa. - signX = by !== 'y' ? sign(newPoint.x) : 1; - signY = by !== 'x' ? sign(newPoint.y) : 1; - if (!transform.signX) { - transform.signX = signX; - } - if (!transform.signY) { - transform.signY = signY; - } - if (target.lockScalingFlip && - (transform.signX !== signX || transform.signY !== signY)) { - return false; - } - dim = target._getTransformedDimensions(); - // missing detection of flip and logic to switch the origin - if (scaleProportionally && !by) { - // uniform scaling - var distance = Math.abs(newPoint.x) + Math.abs(newPoint.y), original = transform.original, originalDistance = Math.abs((dim.x * original.scaleX) / target.scaleX) + - Math.abs((dim.y * original.scaleY) / target.scaleY), scale = distance / originalDistance; - scaleX = original.scaleX * scale; - scaleY = original.scaleY * scale; - } - else { - scaleX = Math.abs((newPoint.x * target.scaleX) / dim.x); - scaleY = Math.abs((newPoint.y * target.scaleY) / dim.y); - } - // if we are scaling by center, we need to double the scale - if (isTransformCentered(transform)) { - scaleX *= 2; - scaleY *= 2; - } - if (transform.signX !== signX && by !== 'y') { - transform.originX = opposite[transform.originX]; - scaleX *= -1; - transform.signX = signX; - } - if (transform.signY !== signY && by !== 'x') { - transform.originY = opposite[transform.originY]; - scaleY *= -1; - transform.signY = signY; - } - } - // minScale is taken are in the setter. - var oldScaleX = target.scaleX, oldScaleY = target.scaleY; - if (!by) { - !lockScalingX && target.set('scaleX', scaleX); - !lockScalingY && target.set('scaleY', scaleY); - } - else { - // forbidden cases already handled on top here. - by === 'x' && target.set('scaleX', scaleX); - by === 'y' && target.set('scaleY', scaleY); - } - return oldScaleX !== target.scaleX || oldScaleY !== target.scaleY; - } - /** - * Generic scaling logic, to scale from corners either equally or freely. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scaleObjectFromCorner(eventData, transform, x, y) { - return scaleObject(eventData, transform, x, y); - } - /** - * Scaling logic for the X axis. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scaleObjectX(eventData, transform, x, y) { - return scaleObject(eventData, transform, x, y, { by: 'x' }); - } - /** - * Scaling logic for the Y axis. - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scaleObjectY(eventData, transform, x, y) { - return scaleObject(eventData, transform, x, y, { by: 'y' }); - } - /** - * Composed action handler to either scale Y or skew X - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scalingYOrSkewingX(eventData, transform, x, y) { - // ok some safety needed here. - if (eventData[transform.target.canvas.altActionKey]) { - return controls.skewHandlerX(eventData, transform, x, y); - } - return controls.scalingY(eventData, transform, x, y); - } - /** - * Composed action handler to either scale X or skew Y - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function scalingXOrSkewingY(eventData, transform, x, y) { - // ok some safety needed here. - if (eventData[transform.target.canvas.altActionKey]) { - return controls.skewHandlerY(eventData, transform, x, y); - } - return controls.scalingX(eventData, transform, x, y); - } - /** - * Action handler to change textbox width - * Needs to be wrapped with `wrapWithFixedAnchor` to be effective - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if some change happened - */ - function changeWidth(eventData, transform, x, y) { - var localPoint = getLocalPoint(transform, transform.originX, transform.originY, x, y); - // make sure the control changes width ONLY from it's side of target - if (transform.originX === 'center' || - (transform.originX === 'right' && localPoint.x < 0) || - (transform.originX === 'left' && localPoint.x > 0)) { - var target = transform.target, strokePadding = target.strokeWidth / (target.strokeUniform ? target.scaleX : 1), multiplier = isTransformCentered(transform) ? 2 : 1, oldWidth = target.width, newWidth = Math.ceil(Math.abs((localPoint.x * multiplier) / target.scaleX) - strokePadding); - target.set('width', Math.max(newWidth, 0)); - // check against actual target width in case `newWidth` was rejected - return oldWidth !== target.width; - } - return false; - } - /** - * Action handler - * @private - * @param {Event} eventData javascript event that is doing the transform - * @param {Object} transform javascript object containing a series of information around the current transform - * @param {number} x current mouse x position, canvas normalized - * @param {number} y current mouse y position, canvas normalized - * @return {Boolean} true if the translation occurred - */ - function dragHandler(eventData, transform, x, y) { - var target = transform.target, newLeft = x - transform.offsetX, newTop = y - transform.offsetY, moveX = !target.get('lockMovementX') && target.left !== newLeft, moveY = !target.get('lockMovementY') && target.top !== newTop; - moveX && target.set('left', newLeft); - moveY && target.set('top', newTop); - if (moveX || moveY) { - fireEvent('moving', commonEventInfo(eventData, transform, x, y)); - } - return moveX || moveY; - } - controls.scaleCursorStyleHandler = scaleCursorStyleHandler; - controls.skewCursorStyleHandler = skewCursorStyleHandler; - controls.scaleSkewCursorStyleHandler = scaleSkewCursorStyleHandler; - controls.rotationWithSnapping = wrapWithFireEvent('rotating', wrapWithFixedAnchor(rotationWithSnapping)); - controls.scalingEqually = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectFromCorner)); - controls.scalingX = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectX)); - controls.scalingY = wrapWithFireEvent('scaling', wrapWithFixedAnchor(scaleObjectY)); - controls.scalingYOrSkewingX = scalingYOrSkewingX; - controls.scalingXOrSkewingY = scalingXOrSkewingY; - controls.changeWidth = wrapWithFireEvent('resizing', wrapWithFixedAnchor(changeWidth)); - controls.skewHandlerX = skewHandlerX; - controls.skewHandlerY = skewHandlerY; - controls.dragHandler = dragHandler; - controls.scaleOrSkewActionName = scaleOrSkewActionName; - controls.rotationStyleHandler = rotationStyleHandler; - controls.fireEvent = fireEvent; - controls.wrapWithFixedAnchor = wrapWithFixedAnchor; - controls.wrapWithFireEvent = wrapWithFireEvent; - controls.getLocalPoint = getLocalPoint; - controls.renderCircleControl = renderCircleControl; - controls.renderSquareControl = renderSquareControl; - fabric.controlsUtils = controls; -})(typeof exports !== 'undefined' ? exports : window); - -//@ts-nocheck -(function (global) { - var fabric = global.fabric, controlsUtils = fabric.controlsUtils, scaleSkewStyleHandler = controlsUtils.scaleSkewCursorStyleHandler, scaleStyleHandler = controlsUtils.scaleCursorStyleHandler, scalingEqually = controlsUtils.scalingEqually, scalingYOrSkewingX = controlsUtils.scalingYOrSkewingX, scalingXOrSkewingY = controlsUtils.scalingXOrSkewingY, scaleOrSkewActionName = controlsUtils.scaleOrSkewActionName, objectControls = fabric.Object.prototype.controls; - objectControls.ml = new fabric.Control({ - x: -0.5, - y: 0, - cursorStyleHandler: scaleSkewStyleHandler, - actionHandler: scalingXOrSkewingY, - getActionName: scaleOrSkewActionName, - }); - objectControls.mr = new fabric.Control({ - x: 0.5, - y: 0, - cursorStyleHandler: scaleSkewStyleHandler, - actionHandler: scalingXOrSkewingY, - getActionName: scaleOrSkewActionName, - }); - objectControls.mb = new fabric.Control({ - x: 0, - y: 0.5, - cursorStyleHandler: scaleSkewStyleHandler, - actionHandler: scalingYOrSkewingX, - getActionName: scaleOrSkewActionName, - }); - objectControls.mt = new fabric.Control({ - x: 0, - y: -0.5, - cursorStyleHandler: scaleSkewStyleHandler, - actionHandler: scalingYOrSkewingX, - getActionName: scaleOrSkewActionName, - }); - objectControls.tl = new fabric.Control({ - x: -0.5, - y: -0.5, - cursorStyleHandler: scaleStyleHandler, - actionHandler: scalingEqually, - }); - objectControls.tr = new fabric.Control({ - x: 0.5, - y: -0.5, - cursorStyleHandler: scaleStyleHandler, - actionHandler: scalingEqually, - }); - objectControls.bl = new fabric.Control({ - x: -0.5, - y: 0.5, - cursorStyleHandler: scaleStyleHandler, - actionHandler: scalingEqually, - }); - objectControls.br = new fabric.Control({ - x: 0.5, - y: 0.5, - cursorStyleHandler: scaleStyleHandler, - actionHandler: scalingEqually, - }); - objectControls.mtr = new fabric.Control({ - x: 0, - y: -0.5, - actionHandler: controlsUtils.rotationWithSnapping, - cursorStyleHandler: controlsUtils.rotationStyleHandler, - offsetY: -40, - withConnection: true, - actionName: 'rotate', - }); - if (fabric.Textbox) { - // this is breaking the prototype inheritance, no time / ideas to fix it. - // is important to document that if you want to have all objects to have a - // specific custom control, you have to add it to Object prototype and to Textbox - // prototype. The controls are shared as references. So changes to control `tr` - // can still apply to all objects if needed. - var textBoxControls = (fabric.Textbox.prototype.controls = {}); - textBoxControls.mtr = objectControls.mtr; - textBoxControls.tr = objectControls.tr; - textBoxControls.br = objectControls.br; - textBoxControls.tl = objectControls.tl; - textBoxControls.bl = objectControls.bl; - textBoxControls.mt = objectControls.mt; - textBoxControls.mb = objectControls.mb; - textBoxControls.mr = new fabric.Control({ - x: 0.5, - y: 0, - actionHandler: controlsUtils.changeWidth, - cursorStyleHandler: scaleSkewStyleHandler, - actionName: 'resizing', - }); - textBoxControls.ml = new fabric.Control({ - x: -0.5, - y: 0, - actionHandler: controlsUtils.changeWidth, - cursorStyleHandler: scaleSkewStyleHandler, - actionName: 'resizing', - }); - } -})(typeof exports !== 'undefined' ? exports : window); + _getSVGLineTopOffset: function(lineIndex) { + var lineTopOffset = 0, lastHeight = 0; + for (var j = 0; j < lineIndex; j++) { + lineTopOffset += this.getHeightOfLine(j); + } + lastHeight = this.getHeightOfLine(j); + return { + lineTop: lineTopOffset, + offset: (this._fontSizeMult - this._fontSizeFraction) * lastHeight / (this.lineHeight * this._fontSizeMult) + }; + }, -/** - * @see {@link http://fabricjs.com/freedrawing|Freedrawing demo} - */ -class BaseBrush { - constructor(canvas) { - /** - * Color of a brush - * @type String - * @default - */ - this.color = 'rgb(0, 0, 0)'; - /** - * Width of a brush, has to be a Number, no string literals - * @type Number - * @default - */ - this.width = 1; - /** - * Shadow object representing shadow of this shape. - * Backwards incompatibility note: This property replaces "shadowColor" (String), "shadowOffsetX" (Number), - * "shadowOffsetY" (Number) and "shadowBlur" (Number) since v1.2.12 - * @type Shadow - * @default - */ - this.shadow = null; - /** - * Line endings style of a brush (one of "butt", "round", "square") - * @type String - * @default - */ - this.strokeLineCap = 'round'; - /** - * Corner style of a brush (one of "bevel", "round", "miter") - * @type String - * @default - */ - this.strokeLineJoin = 'round'; - /** - * Maximum miter length (used for strokeLineJoin = "miter") of a brush's - * @type Number - * @default - */ - this.strokeMiterLimit = 10; - /** - * Stroke Dash Array. - * @type Array - * @default - */ - this.strokeDashArray = null; - /** - * When `true`, the free drawing is limited to the whiteboard size. Default to false. - * @type Boolean - * @default false - */ - this.limitedToCanvasSize = false; - this.canvas = canvas; - } - /** - * Sets brush styles - * @private - * @param {CanvasRenderingContext2D} ctx + /** + * Returns styles-string for svg-export + * @param {Boolean} skipShadow a boolean to skip shadow filter output + * @return {String} */ - _setBrushStyles(ctx) { - ctx.strokeStyle = this.color; - ctx.lineWidth = this.width; - ctx.lineCap = this.strokeLineCap; - ctx.miterLimit = this.strokeMiterLimit; - ctx.lineJoin = this.strokeLineJoin; - ctx.setLineDash(this.strokeDashArray || []); - } + getSvgStyles: function(skipShadow) { + var svgStyle = fabric.Object.prototype.getSvgStyles.call(this, skipShadow); + return svgStyle + ' white-space: pre;'; + }, + }); +})(); +/* _TO_SVG_END_ */ + + +(function(global) { + + 'use strict'; + + var fabric = global.fabric || (global.fabric = {}); + + /** + * Textbox class, based on IText, allows the user to resize the text rectangle + * and wraps lines automatically. Textboxes have their Y scaling locked, the + * user can only change width. Height is adjusted automatically based on the + * wrapping of lines. + * @class fabric.Textbox + * @extends fabric.IText + * @mixes fabric.Observable + * @return {fabric.Textbox} thisArg + * @see {@link fabric.Textbox#initialize} for constructor definition + */ + fabric.Textbox = fabric.util.createClass(fabric.IText, fabric.Observable, { + /** - * Sets the transformation on given context - * @param {CanvasRenderingContext2D} ctx context to render on - * @private + * Type of an object + * @type String + * @default */ - _saveAndTransform(ctx) { - const v = this.canvas.viewportTransform; - ctx.save(); - ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]); - } + type: 'textbox', + /** - * Sets brush shadow styles - * @private + * Minimum width of textbox, in pixels. + * @type Number + * @default */ - _setShadow() { - if (!this.shadow || !this.canvas) { - return; - } - const canvas = this.canvas, shadow = this.shadow, ctx = canvas.contextTop, zoom = canvas.getZoom() * canvas.getRetinaScaling(); - ctx.shadowColor = shadow.color; - ctx.shadowBlur = shadow.blur * zoom; - ctx.shadowOffsetX = shadow.offsetX * zoom; - ctx.shadowOffsetY = shadow.offsetY * zoom; - } - needsFullRender() { - const color = new Color(this.color); - return color.getAlpha() < 1 || !!this.shadow; - } + minWidth: 20, + /** - * Removes brush shadow styles - * @private + * Minimum calculated width of a textbox, in pixels. + * fixed to 2 so that an empty textbox cannot go to 0 + * and is still selectable without text. + * @type Number + * @default */ - _resetShadow() { - const ctx = this.canvas.contextTop; - ctx.shadowColor = ''; - ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0; - } + dynamicMinWidth: 2, + /** - * Check is pointer is outside canvas boundaries - * @param {Object} pointer - * @private + * Cached array of text wrapping. + * @type Array */ - _isOutSideCanvas(pointer) { - return (pointer.x < 0 || - pointer.x > this.canvas.getWidth() || - pointer.y < 0 || - pointer.y > this.canvas.getHeight()); - } -} -fabric$1.BaseBrush = BaseBrush; + __cachedLines: null, -/** - * @todo remove transient - */ -const { Circle, Group: Group$1, Shadow: Shadow$2 } = fabric$1; -class CircleBrush extends BaseBrush { - constructor(canvas) { - super(canvas); - /** - * Width of a brush - * @type Number - * @default - */ - this.width = 10; - this.points = []; - } /** - * Invoked inside on mouse down and mouse move - * @param {Point} pointer + * Override standard Object class values */ - drawDot(pointer) { - const point = this.addPoint(pointer), ctx = this.canvas.contextTop; - this._saveAndTransform(ctx); - this.dot(ctx, point); - ctx.restore(); - } - dot(ctx, point) { - ctx.fillStyle = point.fill; - ctx.beginPath(); - ctx.arc(point.x, point.y, point.radius, 0, Math.PI * 2, false); - ctx.closePath(); - ctx.fill(); - } + lockScalingFlip: true, + /** - * Invoked on mouse down + * Override standard Object class values + * Textbox needs this on false */ - onMouseDown(pointer) { - this.points = []; - this.canvas.clearContext(this.canvas.contextTop); - this._setShadow(); - this.drawDot(pointer); - } + noScaleCache: false, + /** - * Render the full state of the brush + * Properties which when set cause object to change dimensions + * @type Object * @private */ - _render() { - const ctx = this.canvas.contextTop, points = this.points; - this._saveAndTransform(ctx); - for (let i = 0; i < points.length; i++) { - this.dot(ctx, points[i]); - } - ctx.restore(); - } + _dimensionAffectingProps: fabric.Text.prototype._dimensionAffectingProps.concat('width'), + /** - * Invoked on mouse move - * @param {Point} pointer + * Use this regular expression to split strings in breakable lines + * @private */ - onMouseMove(pointer) { - if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { - return; - } - if (this.needsFullRender()) { - this.canvas.clearContext(this.canvas.contextTop); - this.addPoint(pointer); - this._render(); - } - else { - this.drawDot(pointer); - } - } + _wordJoiners: /[ \t\r]/, + /** - * Invoked on mouse up + * Use this boolean property in order to split strings that have no white space concept. + * this is a cheap way to help with chinese/japanese + * @type Boolean + * @since 2.6.0 */ - onMouseUp() { - const originalRenderOnAddRemove = this.canvas.renderOnAddRemove; - this.canvas.renderOnAddRemove = false; - const circles = []; - for (let i = 0; i < this.points.length; i++) { - const point = this.points[i], circle = new Circle({ - radius: point.radius, - left: point.x, - top: point.y, - originX: 'center', - originY: 'center', - fill: point.fill, - }); - this.shadow && (circle.shadow = new Shadow$2(this.shadow)); - circles.push(circle); - } - const group = new Group$1(circles, { canvas: this.canvas }); - this.canvas.fire('before:path:created', { path: group }); - this.canvas.add(group); - this.canvas.fire('path:created', { path: group }); - this.canvas.clearContext(this.canvas.contextTop); - this._resetShadow(); - this.canvas.renderOnAddRemove = originalRenderOnAddRemove; - this.canvas.requestRenderAll(); - } - /** - * @param {Object} pointer - * @return {Point} Just added pointer point - */ - addPoint({ x, y }) { - const pointerPoint = { - x, - y, - radius: getRandomInt(Math.max(0, this.width - 20), this.width + 20) / 2, - fill: new Color(this.color).setAlpha(getRandomInt(0, 100) / 100).toRgba(), - }; - this.points.push(pointerPoint); - return pointerPoint; - } -} -fabric$1.CircleBrush = CircleBrush; + splitByGrapheme: false, -/** - * @todo remove transient - */ -const { Path, Shadow: Shadow$1 } = fabric$1; -/** - * @private - * @param {PathData} pathData SVG path commands - * @returns {boolean} - */ -function isEmptySVGPath(pathData) { - return joinPath(pathData) === 'M 0 0 Q 0 0 0 0 L 0 0'; -} -class PencilBrush extends BaseBrush { - constructor(canvas) { - super(canvas); - /** - * Discard points that are less than `decimate` pixel distant from each other - * @type Number - * @default 0.4 - */ - this.decimate = 0.4; - /** - * Draws a straight line between last recorded point to current pointer - * Used for `shift` functionality - * - * @type boolean - * @default false - */ - this.drawStraightLine = false; - /** - * The event modifier key that makes the brush draw a straight line. - * If `null` or 'none' or any other string that is not a modifier key the feature is disabled. - * @type {ModifierKey | undefined | null} - */ - this.straightLineKey = 'shiftKey'; - this._points = []; - this._hasStraightLine = false; - } - needsFullRender() { - return super.needsFullRender() || this._hasStraightLine; - } - static drawSegment(ctx, p1, p2) { - const midPoint = p1.midPointFrom(p2); - ctx.quadraticCurveTo(p1.x, p1.y, midPoint.x, midPoint.y); - return midPoint; - } /** - * Invoked on mouse down - * @param {Point} pointer + * Unlike superclass's version of this function, Textbox does not update + * its width. + * @private + * @override */ - onMouseDown(pointer, { e }) { - if (!this.canvas._isMainEvent(e)) { - return; - } - this.drawStraightLine = !!this.straightLineKey && e[this.straightLineKey]; - this._prepareForDrawing(pointer); - // capture coordinates immediately - // this allows to draw dots (when movement never occurs) - this._addPoint(pointer); - this._render(); - } + initDimensions: function() { + if (this.__skipDimension) { + return; + } + this.isEditing && this.initDelayedCursor(); + this.clearContextTop(); + this._clearCache(); + // clear dynamicMinWidth as it will be different after we re-wrap line + this.dynamicMinWidth = 0; + // wrap lines + this._styleMap = this._generateStyleMap(this._splitText()); + // if after wrapping, the width is smaller than dynamicMinWidth, change the width and re-wrap + if (this.dynamicMinWidth > this.width) { + this._set('width', this.dynamicMinWidth); + } + if (this.textAlign.indexOf('justify') !== -1) { + // once text is measured we need to make space fatter to make justified text. + this.enlargeSpaces(); + } + // clear cache and re-calculate height + this.height = this.calcTextHeight(); + this.saveState({ propertySet: '_dimensionAffectingProps' }); + }, + /** - * Invoked on mouse move - * @param {Point} pointer + * Generate an object that translates the style object so that it is + * broken up by visual lines (new lines and automatic wrapping). + * The original text styles object is broken up by actual lines (new lines only), + * which is only sufficient for Text / IText + * @private */ - onMouseMove(pointer, { e }) { - if (!this.canvas._isMainEvent(e)) { - return; - } - this.drawStraightLine = !!this.straightLineKey && e[this.straightLineKey]; - if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { - return; + _generateStyleMap: function(textInfo) { + var realLineCount = 0, + realLineCharCount = 0, + charCount = 0, + map = {}; + + for (var i = 0; i < textInfo.graphemeLines.length; i++) { + if (textInfo.graphemeText[charCount] === '\n' && i > 0) { + realLineCharCount = 0; + charCount++; + realLineCount++; } - if (this._addPoint(pointer) && this._points.length > 1) { - if (this.needsFullRender()) { - // redraw curve - // clear top canvas - this.canvas.clearContext(this.canvas.contextTop); - this._render(); - } - else { - const points = this._points, length = points.length, ctx = this.canvas.contextTop; - // draw the curve update - this._saveAndTransform(ctx); - if (this.oldEnd) { - ctx.beginPath(); - ctx.moveTo(this.oldEnd.x, this.oldEnd.y); - } - this.oldEnd = PencilBrush.drawSegment(ctx, points[length - 2], points[length - 1]); - ctx.stroke(); - ctx.restore(); - } + else if (!this.splitByGrapheme && this._reSpaceAndTab.test(textInfo.graphemeText[charCount]) && i > 0) { + // this case deals with space's that are removed from end of lines when wrapping + realLineCharCount++; + charCount++; } - } + + map[i] = { line: realLineCount, offset: realLineCharCount }; + + charCount += textInfo.graphemeLines[i].length; + realLineCharCount += textInfo.graphemeLines[i].length; + } + + return map; + }, + /** - * Invoked on mouse up + * Returns true if object has a style property or has it on a specified line + * @param {Number} lineIndex + * @return {Boolean} */ - onMouseUp({ e }) { - if (!this.canvas._isMainEvent(e)) { - return true; + styleHas: function(property, lineIndex) { + if (this._styleMap && !this.isWrapping) { + var map = this._styleMap[lineIndex]; + if (map) { + lineIndex = map.line; } - this.drawStraightLine = false; - this.oldEnd = undefined; - this._finalizeAndAddPath(); - return false; - } + } + return fabric.Text.prototype.styleHas.call(this, property, lineIndex); + }, + /** - * @private - * @param {Point} pointer Actual mouse position related to the canvas. + * Returns true if object has no styling or no styling in a line + * @param {Number} lineIndex , lineIndex is on wrapped lines. + * @return {Boolean} */ - _prepareForDrawing(pointer) { - this._reset(); - this._addPoint(pointer); - this.canvas.contextTop.moveTo(pointer.x, pointer.y); - } + isEmptyStyles: function(lineIndex) { + if (!this.styles) { + return true; + } + var offset = 0, nextLineIndex = lineIndex + 1, nextOffset, obj, shouldLimit = false, + map = this._styleMap[lineIndex], mapNextLine = this._styleMap[lineIndex + 1]; + if (map) { + lineIndex = map.line; + offset = map.offset; + } + if (mapNextLine) { + nextLineIndex = mapNextLine.line; + shouldLimit = nextLineIndex === lineIndex; + nextOffset = mapNextLine.offset; + } + obj = typeof lineIndex === 'undefined' ? this.styles : { line: this.styles[lineIndex] }; + for (var p1 in obj) { + for (var p2 in obj[p1]) { + if (p2 >= offset && (!shouldLimit || p2 < nextOffset)) { + // eslint-disable-next-line no-unused-vars + for (var p3 in obj[p1][p2]) { + return false; + } + } + } + } + return true; + }, + /** + * @param {Number} lineIndex + * @param {Number} charIndex * @private - * @param {Point} point Point to be added to points array */ - _addPoint(point) { - if (this._points.length > 1 && - point.eq(this._points[this._points.length - 1])) { - return false; + _getStyleDeclaration: function(lineIndex, charIndex) { + if (this._styleMap && !this.isWrapping) { + var map = this._styleMap[lineIndex]; + if (!map) { + return null; } - if (this.drawStraightLine && this._points.length > 1) { - this._hasStraightLine = true; - this._points.pop(); - } - this._points.push(point); - return true; - } + lineIndex = map.line; + charIndex = map.offset + charIndex; + } + return this.callSuper('_getStyleDeclaration', lineIndex, charIndex); + }, + /** - * Clear points array and set contextTop canvas style. + * @param {Number} lineIndex + * @param {Number} charIndex + * @param {Object} style * @private */ - _reset() { - this._points = []; - this._setBrushStyles(this.canvas.contextTop); - this._setShadow(); - this._hasStraightLine = false; - } + _setStyleDeclaration: function(lineIndex, charIndex, style) { + var map = this._styleMap[lineIndex]; + lineIndex = map.line; + charIndex = map.offset + charIndex; + + this.styles[lineIndex][charIndex] = style; + }, + /** - * Draw a smooth path on the topCanvas using quadraticCurveTo + * @param {Number} lineIndex + * @param {Number} charIndex * @private - * @param {CanvasRenderingContext2D} [ctx] */ - _render(ctx = this.canvas.contextTop) { - let p1 = this._points[0], p2 = this._points[1]; - this._saveAndTransform(ctx); - ctx.beginPath(); - //if we only have 2 points in the path and they are the same - //it means that the user only clicked the canvas without moving the mouse - //then we should be drawing a dot. A path isn't drawn between two identical dots - //that's why we set them apart a bit - if (this._points.length === 2 && p1.x === p2.x && p1.y === p2.y) { - const width = this.width / 1000; - p1.x -= width; - p2.x += width; - } - ctx.moveTo(p1.x, p1.y); - for (let i = 1; i < this._points.length; i++) { - // we pick the point between pi + 1 & pi + 2 as the - // end point and p1 as our control point. - PencilBrush.drawSegment(ctx, p1, p2); - p1 = this._points[i]; - p2 = this._points[i + 1]; - } - // Draw last line as a straight line while - // we wait for the next point to be able to calculate - // the bezier control point - ctx.lineTo(p1.x, p1.y); - ctx.stroke(); - ctx.restore(); - } - /** - * Converts points to SVG path - * @param {Array} points Array of points - * @return {PathData} SVG path commands - */ - convertPointsToSVGPath(points) { - const correction = this.width / 1000; - return getSmoothPathFromPoints(points, correction); - } - /** - * Creates a Path object to add on canvas - * @param {PathData} pathData Path data - * @return {Path} Path to add on canvas - */ - createPath(pathData) { - const path = new Path(pathData, { - fill: null, - stroke: this.color, - strokeWidth: this.width, - strokeLineCap: this.strokeLineCap, - strokeMiterLimit: this.strokeMiterLimit, - strokeLineJoin: this.strokeLineJoin, - strokeDashArray: this.strokeDashArray, - }); - if (this.shadow) { - this.shadow.affectStroke = true; - path.shadow = new Shadow$1(this.shadow); - } - return path; - } + _deleteStyleDeclaration: function(lineIndex, charIndex) { + var map = this._styleMap[lineIndex]; + lineIndex = map.line; + charIndex = map.offset + charIndex; + delete this.styles[lineIndex][charIndex]; + }, + /** - * Decimate points array with the decimate value + * probably broken need a fix + * Returns the real style line that correspond to the wrapped lineIndex line + * Used just to verify if the line does exist or not. + * @param {Number} lineIndex + * @returns {Boolean} if the line exists or not + * @private */ - decimatePoints(points, distance) { - if (points.length <= 2) { - return points; - } - let lastPoint = points[0], cDistance; - const zoom = this.canvas.getZoom(), adjustedDistance = Math.pow(distance / zoom, 2), l = points.length - 1, newPoints = [lastPoint]; - for (let i = 1; i < l - 1; i++) { - cDistance = - Math.pow(lastPoint.x - points[i].x, 2) + - Math.pow(lastPoint.y - points[i].y, 2); - if (cDistance >= adjustedDistance) { - lastPoint = points[i]; - newPoints.push(lastPoint); - } - } - // Add the last point from the original line to the end of the array. - // This ensures decimate doesn't delete the last point on the line, and ensures the line is > 1 point. - newPoints.push(points[l]); - return newPoints; - } + _getLineStyle: function(lineIndex) { + var map = this._styleMap[lineIndex]; + return !!this.styles[map.line]; + }, + /** - * On mouseup after drawing the path on contextTop canvas - * we use the points captured to create an new Path object - * and add it to the canvas. + * Set the line style to an empty object so that is initialized + * @param {Number} lineIndex + * @param {Object} style + * @private */ - _finalizeAndAddPath() { - const ctx = this.canvas.contextTop; - ctx.closePath(); - if (this.decimate) { - this._points = this.decimatePoints(this._points, this.decimate); - } - const pathData = this.convertPointsToSVGPath(this._points); - if (isEmptySVGPath(pathData)) { - // do not create 0 width/height paths, as they are - // rendered inconsistently across browsers - // Firefox 4, for example, renders a dot, - // whereas Chrome 10 renders nothing - this.canvas.requestRenderAll(); - return; - } - const path = this.createPath(pathData); - this.canvas.clearContext(this.canvas.contextTop); - this.canvas.fire('before:path:created', { path: path }); - this.canvas.add(path); - this.canvas.requestRenderAll(); - path.setCoords(); - this._resetShadow(); - // fire event 'path' created - this.canvas.fire('path:created', { path: path }); - } -} -fabric$1.PencilBrush = PencilBrush; + _setLineStyle: function(lineIndex) { + var map = this._styleMap[lineIndex]; + this.styles[map.line] = {}; + }, -/** - * @todo remove transient - */ -const { Pattern } = fabric$1; -class PatternBrush extends PencilBrush { - constructor(canvas) { - super(canvas); - } - getPatternSrc() { - const dotWidth = 20, dotDistance = 5, patternCanvas = createCanvasElement(), patternCtx = patternCanvas.getContext('2d'); - patternCanvas.width = patternCanvas.height = dotWidth + dotDistance; - if (patternCtx) { - patternCtx.fillStyle = this.color; - patternCtx.beginPath(); - patternCtx.arc(dotWidth / 2, dotWidth / 2, dotWidth / 2, 0, Math.PI * 2, false); - patternCtx.closePath(); - patternCtx.fill(); - } - return patternCanvas; - } - getPatternSrcFunction() { - return String(this.getPatternSrc).replace('this.color', '"' + this.color + '"'); - } /** - * Creates "pattern" instance property - * @param {CanvasRenderingContext2D} ctx - */ - getPattern(ctx) { - return ctx.createPattern(this.source || this.getPatternSrc(), 'repeat'); - } + * Wraps text using the 'width' property of Textbox. First this function + * splits text on newlines, so we preserve newlines entered by the user. + * Then it wraps each line using the width of the Textbox by calling + * _wrapLine(). + * @param {Array} lines The string array of text that is split into lines + * @param {Number} desiredWidth width you want to wrap to + * @returns {Array} Array of lines + */ + _wrapText: function(lines, desiredWidth) { + var wrapped = [], i; + this.isWrapping = true; + for (i = 0; i < lines.length; i++) { + wrapped = wrapped.concat(this._wrapLine(lines[i], i, desiredWidth)); + } + this.isWrapping = false; + return wrapped; + }, + /** - * Sets brush styles + * Helper function to measure a string of text, given its lineIndex and charIndex offset + * it gets called when charBounds are not available yet. * @param {CanvasRenderingContext2D} ctx + * @param {String} text + * @param {number} lineIndex + * @param {number} charOffset + * @returns {number} + * @private */ - _setBrushStyles(ctx) { - super._setBrushStyles(ctx); - const pattern = this.getPattern(ctx); - pattern && (ctx.strokeStyle = pattern); - } + _measureWord: function(word, lineIndex, charOffset) { + var width = 0, prevGrapheme, skipLeft = true; + charOffset = charOffset || 0; + for (var i = 0, len = word.length; i < len; i++) { + var box = this._getGraphemeBox(word[i], lineIndex, i + charOffset, prevGrapheme, skipLeft); + width += box.kernedWidth; + prevGrapheme = word[i]; + } + return width; + }, + /** - * Creates path - */ - createPath(pathData) { - const path = super.createPath(pathData), topLeft = path._getLeftTopCoords().scalarAdd(path.strokeWidth / 2); - path.stroke = new Pattern({ - source: this.source || this.getPatternSrcFunction(), - offsetX: -topLeft.x, - offsetY: -topLeft.y, - }); - return path; - } -} -fabric$1.PatternBrush = PatternBrush; + * Wraps a line of text using the width of the Textbox and a context. + * @param {Array} line The grapheme array that represent the line + * @param {Number} lineIndex + * @param {Number} desiredWidth width you want to wrap the line to + * @param {Number} reservedSpace space to remove from wrapping for custom functionalities + * @returns {Array} Array of line(s) into which the given text is wrapped + * to. + */ + _wrapLine: function(_line, lineIndex, desiredWidth, reservedSpace) { + var lineWidth = 0, + splitByGrapheme = this.splitByGrapheme, + graphemeLines = [], + line = [], + // spaces in different languages? + words = splitByGrapheme ? fabric.util.string.graphemeSplit(_line) : _line.split(this._wordJoiners), + word = '', + offset = 0, + infix = splitByGrapheme ? '' : ' ', + wordWidth = 0, + infixWidth = 0, + largestWordWidth = 0, + lineJustStarted = true, + additionalSpace = this._getWidthOfCharSpacing(), + reservedSpace = reservedSpace || 0; + // fix a difference between split and graphemeSplit + if (words.length === 0) { + words.push([]); + } + desiredWidth -= reservedSpace; + for (var i = 0; i < words.length; i++) { + // if using splitByGrapheme words are already in graphemes. + word = splitByGrapheme ? words[i] : fabric.util.string.graphemeSplit(words[i]); + wordWidth = this._measureWord(word, lineIndex, offset); + offset += word.length; -/** - * @todo remove transient - */ -const { Group, Rect, Shadow } = fabric$1; -/** - * - * @param rects - * @returns - */ -function getUniqueRects(rects) { - const uniqueRects = {}; - const uniqueRectsArray = []; - for (let i = 0, key; i < rects.length; i++) { - key = `${rects[i].left}${rects[i].top}`; - if (!uniqueRects[key]) { - uniqueRects[key] = true; - uniqueRectsArray.push(rects[i]); + lineWidth += infixWidth + wordWidth - additionalSpace; + if (lineWidth > desiredWidth && !lineJustStarted) { + graphemeLines.push(line); + line = []; + lineWidth = wordWidth; + lineJustStarted = true; } - } - return uniqueRectsArray; -} -class SprayBrush extends BaseBrush { - /** - * Constructor - * @param {Canvas} canvas - * @return {SprayBrush} Instance of a spray brush - */ - constructor(canvas) { - super(canvas); - /** - * Width of a spray - * @type Number - * @default - */ - this.width = 10; - /** - * Density of a spray (number of dots per chunk) - * @type Number - * @default - */ - this.density = 20; - /** - * Width of spray dots - * @type Number - * @default - */ - this.dotWidth = 1; - /** - * Width variance of spray dots - * @type Number - * @default - */ - this.dotWidthVariance = 1; - /** - * Whether opacity of a dot should be random - * @type Boolean - * @default - */ - this.randomOpacity = false; - /** - * Whether overlapping dots (rectangles) should be removed (for performance reasons) - * @type Boolean - * @default - */ - this.optimizeOverlapping = true; - this.sprayChunks = []; - this.sprayChunk = []; - } + else { + lineWidth += additionalSpace; + } + + if (!lineJustStarted && !splitByGrapheme) { + line.push(infix); + } + line = line.concat(word); + + infixWidth = splitByGrapheme ? 0 : this._measureWord([infix], lineIndex, offset); + offset++; + lineJustStarted = false; + // keep track of largest word + if (wordWidth > largestWordWidth) { + largestWordWidth = wordWidth; + } + } + + i && graphemeLines.push(line); + + if (largestWordWidth + reservedSpace > this.dynamicMinWidth) { + this.dynamicMinWidth = largestWordWidth - additionalSpace + reservedSpace; + } + return graphemeLines; + }, + /** - * Invoked on mouse down - * @param {Point} pointer + * Detect if the text line is ended with an hard break + * text and itext do not have wrapping, return false + * @param {Number} lineIndex text to split + * @return {Boolean} */ - onMouseDown(pointer) { - this.sprayChunks = []; - this.canvas.clearContext(this.canvas.contextTop); - this._setShadow(); - this.addSprayChunk(pointer); - this.renderChunck(this.sprayChunk); - } + isEndOfWrapping: function(lineIndex) { + if (!this._styleMap[lineIndex + 1]) { + // is last line, return true; + return true; + } + if (this._styleMap[lineIndex + 1].line !== this._styleMap[lineIndex].line) { + // this is last line before a line break, return true; + return true; + } + return false; + }, + /** - * Invoked on mouse move - * @param {Point} pointer + * Detect if a line has a linebreak and so we need to account for it when moving + * and counting style. + * @return Number */ - onMouseMove(pointer) { - if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) { - return; - } - this.addSprayChunk(pointer); - this.renderChunck(this.sprayChunk); - } + missingNewlineOffset: function(lineIndex) { + if (this.splitByGrapheme) { + return this.isEndOfWrapping(lineIndex) ? 1 : 0; + } + return 1; + }, + /** - * Invoked on mouse up - */ - onMouseUp() { - const originalRenderOnAddRemove = this.canvas.renderOnAddRemove; - this.canvas.renderOnAddRemove = false; - const rects = []; - for (let i = 0; i < this.sprayChunks.length; i++) { - const sprayChunk = this.sprayChunks[i]; - for (let j = 0; j < sprayChunk.length; j++) { - const chunck = sprayChunk[j]; - const rect = new Rect({ - width: chunck.width, - height: chunck.width, - left: chunck.x + 1, - top: chunck.y + 1, - originX: 'center', - originY: 'center', - fill: this.color, - }); - rects.push(rect); - } - } - const group = new Group(this.optimizeOverlapping ? getUniqueRects(rects) : rects, { - objectCaching: true, - layout: 'fixed', - subTargetCheck: false, - interactive: false, - }); - this.shadow && group.set('shadow', new Shadow(this.shadow)); - this.canvas.fire('before:path:created', { path: group }); - this.canvas.add(group); - this.canvas.fire('path:created', { path: group }); - this.canvas.clearContext(this.canvas.contextTop); - this._resetShadow(); - this.canvas.renderOnAddRemove = originalRenderOnAddRemove; - this.canvas.requestRenderAll(); - } - renderChunck(sprayChunck) { - const ctx = this.canvas.contextTop; - ctx.fillStyle = this.color; - this._saveAndTransform(ctx); - for (let i = 0; i < sprayChunck.length; i++) { - const point = sprayChunck[i]; - ctx.globalAlpha = point.opacity; - ctx.fillRect(point.x, point.y, point.width, point.width); + * Gets lines of text to render in the Textbox. This function calculates + * text wrapping on the fly every time it is called. + * @param {String} text text to split + * @returns {Array} Array of lines in the Textbox. + * @override + */ + _splitTextIntoLines: function(text) { + var newText = fabric.Text.prototype._splitTextIntoLines.call(this, text), + graphemeLines = this._wrapText(newText.lines, this.width), + lines = new Array(graphemeLines.length); + for (var i = 0; i < graphemeLines.length; i++) { + lines[i] = graphemeLines[i].join(''); + } + newText.lines = lines; + newText.graphemeLines = graphemeLines; + return newText; + }, + + getMinWidth: function() { + return Math.max(this.minWidth, this.dynamicMinWidth); + }, + + _removeExtraneousStyles: function() { + var linesToKeep = {}; + for (var prop in this._styleMap) { + if (this._textLines[prop]) { + linesToKeep[this._styleMap[prop].line] = 1; } - ctx.restore(); - } - /** - * Render all spray chunks - */ - _render() { - const ctx = this.canvas.contextTop; - ctx.fillStyle = this.color; - this._saveAndTransform(ctx); - for (let i = 0; i < this.sprayChunks.length; i++) { - this.renderChunck(this.sprayChunks[i]); + } + for (var prop in this.styles) { + if (!linesToKeep[prop]) { + delete this.styles[prop]; } - ctx.restore(); - } + } + }, + /** - * @param {Point} pointer + * Returns object representation of an instance + * @method toObject + * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output + * @return {Object} object representation of an instance */ - addSprayChunk(pointer) { - this.sprayChunk = []; - const radius = this.width / 2; - for (let i = 0; i < this.density; i++) { - this.sprayChunk.push({ - x: getRandomInt(pointer.x - radius, pointer.x + radius), - y: getRandomInt(pointer.y - radius, pointer.y + radius), - width: this.dotWidthVariance - ? getRandomInt( - // bottom clamp width to 1 - Math.max(1, this.dotWidth - this.dotWidthVariance), this.dotWidth + this.dotWidthVariance) - : this.dotWidth, - opacity: this.randomOpacity ? getRandomInt(0, 100) / 100 : 1, - }); - } - this.sprayChunks.push(this.sprayChunk); + toObject: function(propertiesToInclude) { + return this.callSuper('toObject', ['minWidth', 'splitByGrapheme'].concat(propertiesToInclude)); } -} -fabric$1.SprayBrush = SprayBrush; -//# sourceMappingURL=fabric.js.map + }); + + /** + * Returns fabric.Textbox instance from an object representation + * @static + * @memberOf fabric.Textbox + * @param {Object} object Object to create an instance from + * @param {Function} [callback] Callback to invoke when an fabric.Textbox instance is created + */ + fabric.Textbox.fromObject = function(object, callback) { + return fabric.Object._fromObject('Textbox', object, callback, 'text'); + }; +})(typeof exports !== 'undefined' ? exports : this); + + +(function() { + + var controlsUtils = fabric.controlsUtils, + scaleSkewStyleHandler = controlsUtils.scaleSkewCursorStyleHandler, + scaleStyleHandler = controlsUtils.scaleCursorStyleHandler, + scalingEqually = controlsUtils.scalingEqually, + scalingYOrSkewingX = controlsUtils.scalingYOrSkewingX, + scalingXOrSkewingY = controlsUtils.scalingXOrSkewingY, + scaleOrSkewActionName = controlsUtils.scaleOrSkewActionName, + objectControls = fabric.Object.prototype.controls; + + objectControls.ml = new fabric.Control({ + x: -0.5, + y: 0, + cursorStyleHandler: scaleSkewStyleHandler, + actionHandler: scalingXOrSkewingY, + getActionName: scaleOrSkewActionName, + }); + + objectControls.mr = new fabric.Control({ + x: 0.5, + y: 0, + cursorStyleHandler: scaleSkewStyleHandler, + actionHandler: scalingXOrSkewingY, + getActionName: scaleOrSkewActionName, + }); + + objectControls.mb = new fabric.Control({ + x: 0, + y: 0.5, + cursorStyleHandler: scaleSkewStyleHandler, + actionHandler: scalingYOrSkewingX, + getActionName: scaleOrSkewActionName, + }); + + objectControls.mt = new fabric.Control({ + x: 0, + y: -0.5, + cursorStyleHandler: scaleSkewStyleHandler, + actionHandler: scalingYOrSkewingX, + getActionName: scaleOrSkewActionName, + }); + + objectControls.tl = new fabric.Control({ + x: -0.5, + y: -0.5, + cursorStyleHandler: scaleStyleHandler, + actionHandler: scalingEqually + }); + + objectControls.tr = new fabric.Control({ + x: 0.5, + y: -0.5, + cursorStyleHandler: scaleStyleHandler, + actionHandler: scalingEqually + }); + + objectControls.bl = new fabric.Control({ + x: -0.5, + y: 0.5, + cursorStyleHandler: scaleStyleHandler, + actionHandler: scalingEqually + }); + + objectControls.br = new fabric.Control({ + x: 0.5, + y: 0.5, + cursorStyleHandler: scaleStyleHandler, + actionHandler: scalingEqually + }); + + objectControls.mtr = new fabric.Control({ + x: 0, + y: -0.5, + actionHandler: controlsUtils.rotationWithSnapping, + cursorStyleHandler: controlsUtils.rotationStyleHandler, + offsetY: -40, + withConnection: true, + actionName: 'rotate', + }); + + if (fabric.Textbox) { + // this is breaking the prototype inheritance, no time / ideas to fix it. + // is important to document that if you want to have all objects to have a + // specific custom control, you have to add it to Object prototype and to Textbox + // prototype. The controls are shared as references. So changes to control `tr` + // can still apply to all objects if needed. + var textBoxControls = fabric.Textbox.prototype.controls = { }; + + textBoxControls.mtr = objectControls.mtr; + textBoxControls.tr = objectControls.tr; + textBoxControls.br = objectControls.br; + textBoxControls.tl = objectControls.tl; + textBoxControls.bl = objectControls.bl; + textBoxControls.mt = objectControls.mt; + textBoxControls.mb = objectControls.mb; + + textBoxControls.mr = new fabric.Control({ + x: 0.5, + y: 0, + actionHandler: controlsUtils.changeWidth, + cursorStyleHandler: scaleSkewStyleHandler, + actionName: 'resizing', + }); + + textBoxControls.ml = new fabric.Control({ + x: -0.5, + y: 0, + actionHandler: controlsUtils.changeWidth, + cursorStyleHandler: scaleSkewStyleHandler, + actionName: 'resizing', + }); + } +})(); + From b9eb6b8d382418404a3c4ae1078519d27ca2130d Mon Sep 17 00:00:00 2001 From: Andrea Bogazzi Date: Sat, 15 Oct 2022 23:54:28 +0200 Subject: [PATCH 3/5] no dists --- dist/fabric.d.ts | 2 -- dist/fabric.d.ts.map | 1 - dist/fabric.js.map | 1 - dist/fabric.min.d.ts | 2 -- dist/fabric.min.d.ts.map | 1 - 5 files changed, 7 deletions(-) delete mode 100644 dist/fabric.d.ts delete mode 100644 dist/fabric.d.ts.map delete mode 100644 dist/fabric.js.map delete mode 100644 dist/fabric.min.d.ts delete mode 100644 dist/fabric.min.d.ts.map diff --git a/dist/fabric.d.ts b/dist/fabric.d.ts deleted file mode 100644 index e4d4eb02702..00000000000 --- a/dist/fabric.d.ts +++ /dev/null @@ -1,2 +0,0 @@ -export {}; -//# sourceMappingURL=fabric.d.ts.map \ No newline at end of file diff --git a/dist/fabric.d.ts.map b/dist/fabric.d.ts.map deleted file mode 100644 index b53435c281f..00000000000 --- a/dist/fabric.d.ts.map +++ /dev/null @@ -1 +0,0 @@ -{"version":3,"file":"fabric.d.ts","sourceRoot":"","sources":["../index.js","../src/config.ts","../src/cache.ts","../src/typedefs.ts","../src/constants.ts","../HEADER.js","../src/mixins/observable.mixin.ts","../src/mixins/collection.mixin.ts","../src/mixins/shared_methods.mixin.ts","../src/util/misc/cos.ts","../src/util/misc/sin.ts","../src/point.class.ts","../src/util/misc/vectors.ts","../src/util/misc/radiansDegreesConversion.ts","../src/util/misc/rotatePoint.ts","../src/util/internals/getRandomInt.ts","../src/util/internals/ifNaN.ts","../src/util/internals/removeFromArray.ts","../src/util/internals/index.ts","../src/util/misc/projectStroke.ts","../src/util/misc/matrix.ts","../src/util/lang_object.ts","../src/util/misc/textStyles.ts","../src/util/misc/dom.ts","../src/util/misc/toFixed.ts","../src/util/misc/svgParsing.ts","../src/util/misc/findScaleTo.ts","../src/util/misc/capValue.ts","../src/util/misc/boundingBoxFromPoints.ts","../src/util/misc/objectTransforms.ts","../src/__types__.ts","../src/util/misc/planeChange.ts","../src/util/lang_string.ts","../src/util/misc/objectEnlive.ts","../src/util/misc/pick.ts","../src/parser/getSvgRegex.ts","../src/parser/constants.ts","../src/util/path.ts","../src/util/dom_style.ts","../src/util/dom_request.ts","../src/util/dom_event.ts","../src/util/dom_misc.ts","../src/util/misc/isTransparent.ts","../src/util/misc/mergeClipPaths.ts","../src/util/anim_ease.ts","../src/color/color_map.ts","../src/color/constants.ts","../src/color/util.ts","../src/color/color.class.ts","../src/color/index.ts","../src/util/animation_registry.ts","../src/util/animate.ts","../src/util/animate_color.ts","../src/util/lang_class.ts","../src/util/misc/misc.ts","../src/parser/elements_parser.ts","../src/parser/getCSSRules.ts","../src/parser/getMultipleNodes.ts","../src/parser/elementById.ts","../src/parser/recursivelyParseGradientsXlink.ts","../src/parser/getGradientDefs.ts","../src/parser/applyViewboxTransform.ts","../src/parser/hasAncestorWithNodeName.ts","../src/parser/parseElements.ts","../src/parser/parseUseDirectives.ts","../src/parser/parseSVGDocument.ts","../src/parser/loadSVGFromString.ts","../src/parser/loadSVGFromURL.ts","../src/parser/selectorMatches.ts","../src/parser/doesSomeParentMatch.ts","../src/parser/elementMatchesRule.ts","../src/parser/getGlobalStylesForElement.ts","../src/parser/normalizeAttr.ts","../src/parser/rotateMatrix.ts","../src/parser/scaleMatrix.ts","../src/parser/skewMatrix.ts","../src/parser/translateMatrix.ts","../src/parser/parseTransformAttribute.ts","../src/parser/normalizeValue.ts","../src/parser/parseFontDeclaration.ts","../src/parser/parseStyleObject.ts","../src/parser/parseStyleString.ts","../src/parser/parseStyleAttribute.ts","../src/parser/setStrokeFillOpacity.ts","../src/parser/parseAttributes.ts","../src/parser/parsePointsAttribute.ts","../src/parser/index.ts","../src/intersection.class.ts","../src/gradient/constants.ts","../src/gradient/typedefs.ts","../src/gradient/parser/misc.ts","../src/parser/percent.ts","../src/gradient/parser/parseColorStops.ts","../src/gradient/parser/parseCoords.ts","../src/gradient/parser/index.ts","../src/gradient/gradient.class.ts","../src/gradient/index.ts","../src/pattern.class.ts","../src/shadow.class.ts","../src/static_canvas.class.ts","../src/canvas.class.ts","../src/util/fireEvent.ts","../src/mixins/canvas_events.mixin.ts","../src/mixins/canvas_grouping.mixin.ts","../src/mixins/canvas_dataurl_exporter.mixin.ts","../src/mixins/canvas_serialization.mixin.ts","../src/mixins/canvas_gestures.mixin.ts","../src/shapes/object.class.ts","../src/mixins/object_origin.mixin.ts","../src/mixins/object_geometry.mixin.ts","../src/mixins/object_ancestry.mixin.ts","../src/mixins/object_stacking.mixin.ts","../src/mixins/object.svg_export.ts","../src/mixins/stateful.mixin.ts","../src/mixins/object_interactivity.mixin.ts","../src/mixins/animation.mixin.ts","../src/shapes/line.class.ts","../src/shapes/circle.class.ts","../src/shapes/triangle.class.ts","../src/shapes/ellipse.class.ts","../src/shapes/rect.class.ts","../src/shapes/polyline.class.ts","../src/shapes/polygon.class.ts","../src/shapes/path.class.ts","../src/shapes/group.class.ts","../src/shapes/active_selection.class.ts","../src/shapes/image.class.ts","../src/mixins/object_straightening.mixin.ts","../src/filters/WebGLProbe.ts","../src/filters/webgl_backend.class.ts","../src/filters/2d_backend.class.ts","../src/filters/base_filter.class.ts","../src/filters/colormatrix_filter.class.ts","../src/filters/brightness_filter.class.ts","../src/filters/convolute_filter.class.ts","../src/filters/grayscale_filter.class.ts","../src/filters/invert_filter.class.ts","../src/filters/noise_filter.class.ts","../src/filters/pixelate_filter.class.ts","../src/filters/removecolor_filter.class.ts","../src/filters/filter_generator.ts","../src/filters/blendcolor_filter.class.ts","../src/filters/blendimage_filter.class.ts","../src/filters/resize_filter.class.ts","../src/filters/contrast_filter.class.ts","..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\ No newline at end of file diff --git a/dist/fabric.js.map b/dist/fabric.js.map deleted file mode 100644 index 07f4af54173..00000000000 --- a/dist/fabric.js.map +++ /dev/null @@ -1 +0,0 @@ -{"version":3,"file":"fabric.js","sources":["../src/config.ts","../src/cache.ts","../src/constants.ts","../HEADER.js","../src/mixins/observable.mixin.ts","../src/mixins/collection.mixin.ts","../src/mixins/shared_methods.mixin.ts","../src/util/misc/cos.ts","../src/util/misc/sin.ts","../src/point.class.ts","../src/util/misc/vectors.ts","../src/util/misc/radiansDegreesConversion.ts","../src/util/misc/rotatePoint.ts","../src/util/internals/getRandomInt.ts","../src/util/internals/ifNaN.ts","../src/util/internals/removeFromArray.ts","../src/util/misc/projectStroke.ts","../node_modules/tslib/tslib.es6.js","../src/util/misc/matrix.ts","../src/util/lang_object.ts","../src/util/misc/textStyles.ts","../src/util/misc/dom.ts","../src/util/misc/toFixed.ts","../src/util/misc/svgParsing.ts","../src/util/misc/findScaleTo.ts","../src/util/misc/capValue.ts","../src/util/misc/boundingBoxFromPoints.ts","../src/util/misc/objectTransforms.ts","../src/util/misc/planeChange.ts","../src/util/lang_string.ts","../src/util/misc/objectEnlive.ts","../src/util/misc/pick.ts","../src/parser/getSvgRegex.ts","../src/parser/constants.ts","../src/util/path.ts","../src/util/dom_style.ts","../src/util/dom_request.ts","../src/util/dom_event.ts","../src/util/dom_misc.ts","../src/util/misc/isTransparent.ts","../src/util/misc/mergeClipPaths.ts","../src/util/anim_ease.ts","../src/color/color_map.ts","../src/color/constants.ts","../src/color/util.ts","../src/color/color.class.ts","../src/color/index.ts","../src/util/animation_registry.ts","../src/util/animate.ts","../src/util/animate_color.ts","../src/util/lang_class.ts","../src/util/misc/misc.ts","../src/parser/elements_parser.ts","../src/parser/getCSSRules.ts","../src/parser/getMultipleNodes.ts","../src/parser/elementById.ts","../src/parser/recursivelyParseGradientsXlink.ts","../src/parser/getGradientDefs.ts","../src/parser/applyViewboxTransform.ts","../src/parser/hasAncestorWithNodeName.ts","../src/parser/parseElements.ts","../src/parser/parseUseDirectives.ts","../src/parser/parseSVGDocument.ts","../src/parser/loadSVGFromString.ts","../src/parser/loadSVGFromURL.ts","../src/parser/selectorMatches.ts","../src/parser/doesSomeParentMatch.ts","../src/parser/elementMatchesRule.ts","../src/parser/getGlobalStylesForElement.ts","../src/parser/normalizeAttr.ts","../src/parser/rotateMatrix.ts","../src/parser/scaleMatrix.ts","../src/parser/skewMatrix.ts","../src/parser/translateMatrix.ts","../src/parser/parseTransformAttribute.ts","../src/parser/normalizeValue.ts","../src/parser/parseFontDeclaration.ts","../src/parser/parseStyleObject.ts","../src/parser/parseStyleString.ts","../src/parser/parseStyleAttribute.ts","../src/parser/setStrokeFillOpacity.ts","../src/parser/parseAttributes.ts","../src/parser/parsePointsAttribute.ts","../src/parser/index.ts","../src/intersection.class.ts","../src/gradient/constants.ts","../src/gradient/parser/misc.ts","../src/parser/percent.ts","../src/gradient/parser/parseColorStops.ts","../src/gradient/parser/parseCoords.ts","../src/gradient/gradient.class.ts","../src/pattern.class.ts","../src/shadow.class.ts","../src/static_canvas.class.ts","../src/canvas.class.ts","../src/util/fireEvent.ts","../src/mixins/canvas_events.mixin.ts","../src/mixins/canvas_grouping.mixin.ts","../src/mixins/canvas_dataurl_exporter.mixin.ts","../src/mixins/canvas_serialization.mixin.ts","../src/mixins/canvas_gestures.mixin.ts","../src/shapes/object.class.ts","../src/mixins/object_origin.mixin.ts","../src/mixins/object_geometry.mixin.ts","../src/mixins/object_ancestry.mixin.ts","../src/mixins/object_stacking.mixin.ts","../src/mixins/object.svg_export.ts","../src/mixins/stateful.mixin.ts","../src/mixins/object_interactivity.mixin.ts","../src/mixins/animation.mixin.ts","../src/shapes/line.class.ts","../src/shapes/circle.class.ts","../src/shapes/triangle.class.ts","../src/shapes/ellipse.class.ts","../src/shapes/rect.class.ts","../src/shapes/polyline.class.ts","../src/shapes/polygon.class.ts","../src/shapes/path.class.ts","../src/shapes/group.class.ts","../src/shapes/active_selection.class.ts","../src/shapes/image.class.ts","../src/mixins/object_straightening.mixin.ts","../src/filters/WebGLProbe.ts","../src/filters/webgl_backend.class.ts","../src/filters/2d_backend.class.ts","../src/filters/base_filter.class.ts","../src/filters/colormatrix_filter.class.ts","../src/filters/brightness_filter.class.ts","../src/filters/convolute_filter.class.ts","../src/filters/grayscale_filter.class.ts","../src/filters/invert_filter.class.ts","../src/filters/noise_filter.class.ts","../src/filters/pixelate_filter.class.ts","../src/filters/removecolor_filter.class.ts","../src/filters/filter_generator.ts","../src/filters/blendcolor_filter.class.ts","../src/filters/blendimage_filter.class.ts","../src/filters/resize_filter.class.ts","../src/filters/contrast_filter.class.ts","../src/filters/saturate_filter.class.ts","../src/filters/vibrance_filter.class.ts","../src/filters/blur_filter.class.ts","../src/filters/gamma_filter.class.ts","../src/filters/composed_filter.class.ts","../src/filters/hue_rotation.class.ts","../src/shapes/text.class.ts","../src/mixins/text_style.mixin.ts","../src/shapes/itext.class.ts","../src/mixins/itext_behavior.mixin.ts","../src/mixins/itext_click_behavior.mixin.ts","../src/mixins/itext_key_behavior.mixin.ts","../src/mixins/itext.svg_export.ts","../src/shapes/textbox.class.ts","../src/controls/controls.render.ts","../src/controls/control.class.ts","../src/controls/controls.actions.ts","../src/controls/default_controls.ts","../src/brushes/base_brush.class.ts","../src/brushes/circle_brush.class.ts","../src/brushes/pencil_brush.class.ts","../src/brushes/pattern_brush.class.ts","../src/brushes/spray_brush.class.ts"],"sourcesContent":["export type TConfiguration = Partial;\n\nclass BaseConfiguration {\n /**\n * Browser-specific constant to adjust CanvasRenderingContext2D.shadowBlur value,\n * which is unitless and not rendered equally across browsers.\n *\n * Values that work quite well (as of October 2017) are:\n * - Chrome: 1.5\n * - Edge: 1.75\n * - Firefox: 0.9\n * - Safari: 0.95\n *\n * @since 2.0.0\n * @type Number\n * @default 1\n */\n browserShadowBlurConstant = 1;\n\n /**\n * Pixel per Inch as a default value set to 96. Can be changed for more realistic conversion.\n */\n DPI = 96;\n\n /**\n * Device Pixel Ratio\n * @see https://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/HTML-canvas-guide/SettingUptheCanvas/SettingUptheCanvas.html\n */\n devicePixelRatio = 1;\n\n /**\n * Pixel limit for cache canvases. 1Mpx , 4Mpx should be fine.\n * @since 1.7.14\n * @type Number\n * @default\n */\n perfLimitSizeTotal = 2097152;\n\n /**\n * Pixel limit for cache canvases width or height. IE fixes the maximum at 5000\n * @since 1.7.14\n * @type Number\n * @default\n */\n maxCacheSideLimit = 4096;\n\n /**\n * Lowest pixel limit for cache canvases, set at 256PX\n * @since 1.7.14\n * @type Number\n * @default\n */\n minCacheSideLimit = 256;\n\n /**\n * When 'true', style information is not retained when copy/pasting text, making\n * pasted text use destination style.\n * Defaults to 'false'.\n * @type Boolean\n * @default\n * @deprecated\n */\n disableStyleCopyPaste = false;\n\n /**\n * Enable webgl for filtering picture is available\n * A filtering backend will be initialized, this will both take memory and\n * time since a default 2048x2048 canvas will be created for the gl context\n * @since 2.0.0\n * @type Boolean\n * @default\n */\n enableGLFiltering = true;\n\n /**\n * if webgl is enabled and available, textureSize will determine the size\n * of the canvas backend\n *\n * In order to support old hardware set to `2048` to avoid OOM\n *\n * @since 2.0.0\n * @type Number\n * @default\n */\n textureSize = 4096;\n\n /**\n * Skip performance testing of setupGLContext and force the use of putImageData that seems to be the one that works best on\n * Chrome + old hardware. if your users are experiencing empty images after filtering you may try to force this to true\n * this has to be set before instantiating the filtering backend ( before filtering the first image )\n * @type Boolean\n * @default false\n */\n forceGLPutImageData = false;\n\n /**\n * If disabled boundsOfCurveCache is not used. For apps that make heavy usage of pencil drawing probably disabling it is better\n * @default true\n */\n cachesBoundsOfCurve = true;\n\n /**\n * Map of font files\n * Map of font files\n */\n fontPaths: Record = {};\n\n /**\n * Defines the number of fraction digits to use when serializing object values.\n * Used in exporting methods (`toObject`, `toJSON`, `toSVG`)\n * You can use it to increase/decrease precision of such values like left, top, scaleX, scaleY, etc.\n */\n NUM_FRACTION_DIGITS = 4;\n}\n\nexport class Configuration extends BaseConfiguration {\n constructor(config?: TConfiguration) {\n super();\n this.configure(config);\n }\n\n configure(config: TConfiguration = {}) {\n Object.assign(this, config);\n }\n\n /**\n * Map of font files\n */\n addFonts(\n paths: Record = {}\n ) {\n this.fontPaths = {\n ...this.fontPaths,\n ...paths,\n };\n }\n\n removeFonts(fontFamilys: string[] = []) {\n fontFamilys.forEach((fontFamily) => {\n delete this.fontPaths[fontFamily];\n });\n }\n\n clearFonts() {\n this.fontPaths = {};\n }\n\n restoreDefaults(keys?: (keyof T)[]) {\n const defaults = new BaseConfiguration() as T;\n const config =\n keys?.reduce((acc, key) => {\n acc[key] = defaults[key];\n return acc;\n }, {} as T) || defaults;\n this.configure(config);\n }\n}\n\nexport const config = new Configuration();\n","import { config } from './config';\n\nexport class Cache {\n /**\n * Cache of widths of chars in text rendering.\n */\n charWidthsCache: Record<\n /** fontFamily */ string,\n Record<\n /** fontStyleCacheKey */ string,\n Record\n >\n > = {};\n\n /**\n * @return {Object} reference to cache\n */\n getFontCache({\n fontFamily,\n fontStyle,\n fontWeight,\n }: {\n fontFamily: string;\n fontStyle: string;\n fontWeight: string | number;\n }) {\n fontFamily = fontFamily.toLowerCase();\n if (!this.charWidthsCache[fontFamily]) {\n this.charWidthsCache[fontFamily] = {};\n }\n const fontCache = this.charWidthsCache[fontFamily];\n const cacheKey = `${fontStyle.toLowerCase()}_${(\n fontWeight + ''\n ).toLowerCase()}`;\n if (!fontCache[cacheKey]) {\n fontCache[cacheKey] = {};\n }\n return fontCache[cacheKey];\n }\n\n /**\n * Clear char widths cache for the given font family or all the cache if no\n * fontFamily is specified.\n * Use it if you know you are loading fonts in a lazy way and you are not waiting\n * for custom fonts to load properly when adding text objects to the canvas.\n * If a text object is added when its own font is not loaded yet, you will get wrong\n * measurement and so wrong bounding boxes.\n * After the font cache is cleared, either change the textObject text content or call\n * initDimensions() to trigger a recalculation\n * @memberOf fabric.util\n * @param {String} [fontFamily] font family to clear\n */\n clearFontCache(fontFamily?: string) {\n fontFamily = (fontFamily || '').toLowerCase();\n if (!fontFamily) {\n this.charWidthsCache = {};\n } else if (this.charWidthsCache[fontFamily]) {\n delete this.charWidthsCache[fontFamily];\n }\n }\n\n /**\n * Given current aspect ratio, determines the max width and height that can\n * respect the total allowed area for the cache.\n * @memberOf fabric.util\n * @param {number} ar aspect ratio\n * @return {number[]} Limited dimensions X and Y\n */\n limitDimsByArea(ar: number) {\n const { perfLimitSizeTotal } = config;\n const roughWidth = Math.sqrt(perfLimitSizeTotal * ar);\n // we are not returning a point on purpose, to avoid circular dependencies\n // this is an internal utility\n return [\n Math.floor(roughWidth),\n Math.floor(perfLimitSizeTotal / roughWidth),\n ];\n }\n\n /**\n * This object contains the result of arc to bezier conversion for faster retrieving if the same arc needs to be converted again.\n * It was an internal variable, is accessible since version 2.3.4\n */\n arcToSegmentsCache = {};\n\n /**\n * This object keeps the results of the boundsOfCurve calculation mapped by the joined arguments necessary to calculate it.\n * It does speed up calculation, if you parse and add always the same paths, but in case of heavy usage of freedrawing\n * you do not get any speed benefit and you get a big object in memory.\n * The object was a private variable before, while now is appended to the lib so that you have access to it and you\n * can eventually clear it.\n * It was an internal variable, is accessible since version 2.3.4\n */\n boundsOfCurveCache = {};\n}\n\nexport const cache = new Cache();\n","import { TMat2D } from './typedefs';\n\nexport { version as VERSION } from '../package.json';\nexport function noop() {}\nexport const halfPI = Math.PI / 2;\nexport const twoMathPi = Math.PI * 2;\nexport const PiBy180 = Math.PI / 180;\nexport const iMatrix = Object.freeze([1, 0, 0, 1, 0, 0]) as TMat2D;\nexport const DEFAULT_SVG_FONT_SIZE = 16;\n\n/* \"magic number\" for bezier approximations of arcs (http://itc.ktu.lt/itc354/Riskus354.pdf) */\nexport const kRect = 1 - 0.5522847498;\n","import { cache } from './src/cache';\nimport { config } from './src/config';\nimport { iMatrix, VERSION } from './src/constants';\n\nvar fabric = fabric || {\n version: VERSION,\n config,\n cache,\n iMatrix,\n};\n\nif (typeof exports !== 'undefined') {\n exports.fabric = fabric;\n} else if (typeof define === 'function' && define.amd) {\n /* _AMD_START_ */\n define([], function () {\n return fabric;\n });\n}\n/* _AMD_END_ */\nif (typeof document !== 'undefined' && typeof window !== 'undefined') {\n if (\n document instanceof\n (typeof HTMLDocument !== 'undefined' ? HTMLDocument : Document)\n ) {\n fabric.document = document;\n } else {\n fabric.document = document.implementation.createHTMLDocument('');\n }\n fabric.window = window;\n window.fabric = fabric;\n} else {\n // assume we're running under node.js when document/window are not present\n var jsdom = require('jsdom');\n var virtualWindow = new jsdom.JSDOM(\n decodeURIComponent(\n '%3C!DOCTYPE%20html%3E%3Chtml%3E%3Chead%3E%3C%2Fhead%3E%3Cbody%3E%3C%2Fbody%3E%3C%2Fhtml%3E'\n ),\n {\n features: {\n FetchExternalResources: ['img'],\n },\n resources: 'usable',\n }\n ).window;\n fabric.document = virtualWindow.document;\n fabric.jsdomImplForWrapper =\n require('jsdom/lib/jsdom/living/generated/utils').implForWrapper;\n fabric.nodeCanvas = require('jsdom/lib/jsdom/utils').Canvas;\n fabric.window = virtualWindow;\n global.DOMParser = fabric.window.DOMParser;\n}\n\n/**\n * True when in environment that supports touch events\n * @type boolean\n */\nfabric.isTouchSupported =\n 'ontouchstart' in fabric.window ||\n 'ontouchstart' in fabric.document ||\n (fabric.window &&\n fabric.window.navigator &&\n fabric.window.navigator.maxTouchPoints > 0);\n\n/**\n * True when in environment that's probably Node.js\n * @type boolean\n */\nfabric.isLikelyNode =\n typeof Buffer !== 'undefined' && typeof window === 'undefined';\n\n/* _FROM_SVG_START_ */\n/**\n * Attributes parsed from all SVG elements\n * @type array\n */\nfabric.SHARED_ATTRIBUTES = [\n 'display',\n 'transform',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'opacity',\n 'stroke',\n 'stroke-dasharray',\n 'stroke-linecap',\n 'stroke-dashoffset',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke-width',\n 'id',\n 'paint-order',\n 'vector-effect',\n 'instantiated_by_use',\n 'clip-path',\n];\n/* _FROM_SVG_END_ */\n\n/**\n * @todo move to config when window is exported\n */\nconfig.configure({\n devicePixelRatio:\n fabric.window.devicePixelRatio ||\n fabric.window.webkitDevicePixelRatio ||\n fabric.window.mozDevicePixelRatio ||\n 1,\n});\n\nexport { fabric };\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n\n /**\n * @private\n * @param {String} eventName\n * @param {Function} handler\n */\n function _removeEventListener(eventName, handler) {\n if (!this.__eventListeners[eventName]) {\n return;\n }\n var eventListener = this.__eventListeners[eventName];\n if (handler) {\n eventListener[eventListener.indexOf(handler)] = false;\n } else {\n eventListener.fill(false);\n }\n }\n\n /**\n * Observes specified event\n * @memberOf fabric.Observable\n * @alias on\n * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler})\n * @param {Function} handler Function that receives a notification when an event of the specified type occurs\n * @return {Function} disposer\n */\n function on(eventName, handler) {\n if (!this.__eventListeners) {\n this.__eventListeners = {};\n }\n // one object with key/value pairs was passed\n if (arguments.length === 1) {\n for (var prop in eventName) {\n this.on(prop, eventName[prop]);\n }\n } else {\n if (!this.__eventListeners[eventName]) {\n this.__eventListeners[eventName] = [];\n }\n this.__eventListeners[eventName].push(handler);\n }\n return off.bind(this, eventName, handler);\n }\n\n function _once(eventName, handler) {\n var _handler = function () {\n handler.apply(this, arguments);\n this.off(eventName, _handler);\n }.bind(this);\n this.on(eventName, _handler);\n return _handler;\n }\n\n /**\n * Observes specified event **once**\n * @memberOf fabric.Observable\n * @alias once\n * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler})\n * @param {Function} handler Function that receives a notification when an event of the specified type occurs\n * @return {Function} disposer\n */\n function once(eventName, handler) {\n // one object with key/value pairs was passed\n if (arguments.length === 1) {\n var handlers = {};\n for (var prop in eventName) {\n handlers[prop] = _once.call(this, prop, eventName[prop]);\n }\n return off.bind(this, handlers);\n } else {\n var _handler = _once.call(this, eventName, handler);\n return off.bind(this, eventName, _handler);\n }\n }\n\n /**\n * Stops event observing for a particular event handler. Calling this method\n * without arguments removes all handlers for all events\n * @memberOf fabric.Observable\n * @alias off\n * @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler})\n * @param {Function} handler Function to be deleted from EventListeners\n */\n function off(eventName, handler) {\n if (!this.__eventListeners) {\n return;\n }\n\n // remove all key/value pairs (event name -> event handler)\n if (arguments.length === 0) {\n for (eventName in this.__eventListeners) {\n _removeEventListener.call(this, eventName);\n }\n }\n // one object with key/value pairs was passed\n else if (typeof eventName === 'object' && typeof handler === 'undefined') {\n for (var prop in eventName) {\n _removeEventListener.call(this, prop, eventName[prop]);\n }\n } else {\n _removeEventListener.call(this, eventName, handler);\n }\n }\n\n /**\n * Fires event with an optional options object\n * @memberOf fabric.Observable\n * @param {String} eventName Event name to fire\n * @param {Object} [options] Options object\n */\n function fire(eventName, options) {\n if (!this.__eventListeners) {\n return;\n }\n\n var listenersForEvent = this.__eventListeners[eventName];\n if (!listenersForEvent) {\n return;\n }\n\n for (var i = 0, len = listenersForEvent.length; i < len; i++) {\n listenersForEvent[i] && listenersForEvent[i].call(this, options || {});\n }\n this.__eventListeners[eventName] = listenersForEvent.filter(function (\n value\n ) {\n return value !== false;\n });\n }\n\n /**\n * @namespace fabric.Observable\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#events}\n * @see {@link http://fabricjs.com/events|Events demo}\n */\n fabric.Observable = {\n fire: fire,\n on: on,\n once: once,\n off: off,\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n /**\n * @namespace fabric.Collection\n */\n fabric.Collection = {\n /**\n * @type {fabric.Object[]}\n */\n _objects: [],\n\n /**\n * Adds objects to collection, Canvas or Group, then renders canvas\n * (if `renderOnAddRemove` is not `false`).\n * Objects should be instances of (or inherit from) fabric.Object\n * @private\n * @param {fabric.Object[]} objects to add\n * @param {(object:fabric.Object) => any} [callback]\n * @returns {number} new array length\n */\n add: function (objects, callback) {\n var size = this._objects.push.apply(this._objects, objects);\n if (callback) {\n for (var i = 0; i < objects.length; i++) {\n callback.call(this, objects[i]);\n }\n }\n return size;\n },\n\n /**\n * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`)\n * An object should be an instance of (or inherit from) fabric.Object\n * @private\n * @param {fabric.Object|fabric.Object[]} objects Object(s) to insert\n * @param {Number} index Index to insert object at\n * @param {(object:fabric.Object) => any} [callback]\n * @returns {number} new array length\n */\n insertAt: function (objects, index, callback) {\n var args = [index, 0].concat(objects);\n this._objects.splice.apply(this._objects, args);\n if (callback) {\n for (var i = 2; i < args.length; i++) {\n callback.call(this, args[i]);\n }\n }\n return this._objects.length;\n },\n\n /**\n * Removes objects from a collection, then renders canvas (if `renderOnAddRemove` is not `false`)\n * @private\n * @param {fabric.Object[]} objectsToRemove objects to remove\n * @param {(object:fabric.Object) => any} [callback] function to call for each object removed\n * @returns {fabric.Object[]} removed objects\n */\n remove: function (objectsToRemove, callback) {\n var objects = this._objects,\n removed = [];\n for (var i = 0, object, index; i < objectsToRemove.length; i++) {\n object = objectsToRemove[i];\n index = objects.indexOf(object);\n // only call onObjectRemoved if an object was actually removed\n if (index !== -1) {\n objects.splice(index, 1);\n removed.push(object);\n callback && callback.call(this, object);\n }\n }\n return removed;\n },\n\n /**\n * Executes given function for each object in this group\n * @param {Function} callback\n * Callback invoked with current object as first argument,\n * index - as second and an array of all objects - as third.\n * Callback is invoked in a context of Global Object (e.g. `window`)\n * when no `context` argument is given\n *\n * @param {Object} context Context (aka thisObject)\n * @return {Self} thisArg\n * @chainable\n */\n forEachObject: function (callback, context) {\n var objects = this.getObjects();\n for (var i = 0; i < objects.length; i++) {\n callback.call(context, objects[i], i, objects);\n }\n return this;\n },\n\n /**\n * Returns an array of children objects of this instance\n * @param {...String} [types] When specified, only objects of these types are returned\n * @return {Array}\n */\n getObjects: function () {\n if (arguments.length === 0) {\n return this._objects.concat();\n }\n var types = Array.from(arguments);\n return this._objects.filter(function (o) {\n return types.indexOf(o.type) > -1;\n });\n },\n\n /**\n * Returns object at specified index\n * @param {Number} index\n * @return {Object} object at index\n */\n item: function (index) {\n return this._objects[index];\n },\n\n /**\n * Returns true if collection contains no objects\n * @return {Boolean} true if collection is empty\n */\n isEmpty: function () {\n return this._objects.length === 0;\n },\n\n /**\n * Returns a size of a collection (i.e: length of an array containing its objects)\n * @return {Number} Collection size\n */\n size: function () {\n return this._objects.length;\n },\n\n /**\n * Returns true if collection contains an object.\\\n * **Prefer using {@link `fabric.Object#isDescendantOf`} for performance reasons**\n * instead of a.contains(b) use b.isDescendantOf(a)\n * @param {Object} object Object to check against\n * @param {Boolean} [deep=false] `true` to check all descendants, `false` to check only `_objects`\n * @return {Boolean} `true` if collection contains an object\n */\n contains: function (object, deep) {\n if (this._objects.indexOf(object) > -1) {\n return true;\n } else if (deep) {\n return this._objects.some(function (obj) {\n return (\n typeof obj.contains === 'function' && obj.contains(object, true)\n );\n });\n }\n return false;\n },\n\n /**\n * Returns number representation of a collection complexity\n * @return {Number} complexity\n */\n complexity: function () {\n return this._objects.reduce(function (memo, current) {\n memo += current.complexity ? current.complexity() : 0;\n return memo;\n }, 0);\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n /**\n * @namespace fabric.CommonMethods\n */\n fabric.CommonMethods = {\n /**\n * Sets object's properties from options\n * @param {Object} [options] Options object\n */\n _setOptions: function (options) {\n for (var prop in options) {\n this.set(prop, options[prop]);\n }\n },\n\n /**\n * @private\n */\n _setObject: function (obj) {\n for (var prop in obj) {\n this._set(prop, obj[prop]);\n }\n },\n\n /**\n * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`.\n * @param {String|Object} key Property name or object (if object, iterate over the object properties)\n * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one)\n * @return {fabric.Object} thisArg\n * @chainable\n */\n set: function (key, value) {\n if (typeof key === 'object') {\n this._setObject(key);\n } else {\n this._set(key, value);\n }\n return this;\n },\n\n _set: function (key, value) {\n this[key] = value;\n },\n\n /**\n * Toggles specified property from `true` to `false` or from `false` to `true`\n * @param {String} property Property to toggle\n * @return {fabric.Object} thisArg\n * @chainable\n */\n toggle: function (property) {\n var value = this.get(property);\n if (typeof value === 'boolean') {\n this.set(property, !value);\n }\n return this;\n },\n\n /**\n * Basic getter\n * @param {String} property Property name\n * @return {*} value of a property\n */\n get: function (property) {\n return this[property];\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","import type { TRadian } from '../../typedefs';\nimport { halfPI } from '../../constants';\n\n/**\n * Calculate the cos of an angle, avoiding returning floats for known results\n * This function is here just to avoid getting 0.999999999999999 when dealing\n * with numbers that are really 1 or 0.\n * @static\n * @memberOf fabric.util\n * @param {TRadian} angle the angle\n * @return {Number} the cosin value for angle.\n */\nexport const cos = (angle: TRadian): number => {\n if (angle === 0) {\n return 1;\n }\n const angleSlice = Math.abs(angle) / halfPI;\n switch (angleSlice) {\n case 1:\n case 3:\n return 0;\n case 2:\n return -1;\n }\n return Math.cos(angle);\n};\n","import type { TRadian } from '../../typedefs';\nimport { halfPI } from '../../constants';\n\n/**\n * Calculate the cos of an angle, avoiding returning floats for known results\n * This function is here just to avoid getting 0.999999999999999 when dealing\n * with numbers that are really 1 or 0.\n * @static\n * @memberOf fabric.util\n * @param {TRadian} angle the angle\n * @return {Number} the sin value for angle.\n */\nexport const sin = (angle: TRadian): number => {\n if (angle === 0) {\n return 0;\n }\n const angleSlice = angle / halfPI;\n const value = Math.sign(angle);\n switch (angleSlice) {\n case 1:\n return value;\n case 2:\n return 0;\n case 3:\n return -value;\n }\n return Math.sin(angle);\n};\n","import { fabric } from '../HEADER';\nimport { TMat2D, TRadian } from './typedefs';\nimport { sin } from './util/misc/sin';\nimport { cos } from './util/misc/cos';\n\nexport interface IPoint {\n x: number;\n y: number;\n}\n\n/**\n * Adaptation of work of Kevin Lindsey(kevin@kevlindev.com)\n */\nexport class Point {\n x: number;\n\n y: number;\n\n type = 'point';\n\n constructor();\n constructor(x: number, y: number);\n constructor(point: IPoint);\n constructor(arg0: number | IPoint = 0, y = 0) {\n if (typeof arg0 === 'object') {\n this.x = arg0.x;\n this.y = arg0.y;\n } else {\n this.x = arg0;\n this.y = y;\n }\n }\n\n /**\n * Adds another point to this one and returns another one\n * @param {Point} that\n * @return {Point} new Point instance with added values\n */\n add(that: IPoint): Point {\n return new Point(this.x + that.x, this.y + that.y);\n }\n\n /**\n * Adds another point to this one\n * @param {Point} that\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n addEquals(that: IPoint): Point {\n this.x += that.x;\n this.y += that.y;\n return this;\n }\n\n /**\n * Adds value to this point and returns a new one\n * @param {Number} scalar\n * @return {Point} new Point with added value\n */\n scalarAdd(scalar: number): Point {\n return new Point(this.x + scalar, this.y + scalar);\n }\n\n /**\n * Adds value to this point\n * @param {Number} scalar\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n scalarAddEquals(scalar: number): Point {\n this.x += scalar;\n this.y += scalar;\n return this;\n }\n\n /**\n * Subtracts another point from this point and returns a new one\n * @param {Point} that\n * @return {Point} new Point object with subtracted values\n */\n subtract(that: IPoint): Point {\n return new Point(this.x - that.x, this.y - that.y);\n }\n\n /**\n * Subtracts another point from this point\n * @param {Point} that\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n subtractEquals(that: IPoint): Point {\n this.x -= that.x;\n this.y -= that.y;\n return this;\n }\n\n /**\n * Subtracts value from this point and returns a new one\n * @param {Number} scalar\n * @return {Point}\n */\n scalarSubtract(scalar: number): Point {\n return new Point(this.x - scalar, this.y - scalar);\n }\n\n /**\n * Subtracts value from this point\n * @param {Number} scalar\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n scalarSubtractEquals(scalar: number): Point {\n this.x -= scalar;\n this.y -= scalar;\n return this;\n }\n\n /**\n * Multiplies this point by another value and returns a new one\n * @param {Point} that\n * @return {Point}\n */\n multiply(that: Point): Point {\n return new Point(this.x * that.x, this.y * that.y);\n }\n\n /**\n * Multiplies this point by a value and returns a new one\n * @param {Number} scalar\n * @return {Point}\n */\n scalarMultiply(scalar: number): Point {\n return new Point(this.x * scalar, this.y * scalar);\n }\n\n /**\n * Multiplies this point by a value\n * @param {Number} scalar\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n scalarMultiplyEquals(scalar: number): Point {\n this.x *= scalar;\n this.y *= scalar;\n return this;\n }\n\n /**\n * Divides this point by another and returns a new one\n * @param {Point} that\n * @return {Point}\n */\n divide(that: IPoint): Point {\n return new Point(this.x / that.x, this.y / that.y);\n }\n\n /**\n * Divides this point by a value and returns a new one\n * @param {Number} scalar\n * @return {Point}\n */\n scalarDivide(scalar: number): Point {\n return new Point(this.x / scalar, this.y / scalar);\n }\n\n /**\n * Divides this point by a value\n * @param {Number} scalar\n * @return {Point} thisArg\n * @chainable\n * @deprecated\n */\n scalarDivideEquals(scalar: number): Point {\n this.x /= scalar;\n this.y /= scalar;\n return this;\n }\n\n /**\n * Returns true if this point is equal to another one\n * @param {Point} that\n * @return {Boolean}\n */\n eq(that: IPoint): boolean {\n return this.x === that.x && this.y === that.y;\n }\n\n /**\n * Returns true if this point is less than another one\n * @param {Point} that\n * @return {Boolean}\n */\n lt(that: IPoint): boolean {\n return this.x < that.x && this.y < that.y;\n }\n\n /**\n * Returns true if this point is less than or equal to another one\n * @param {Point} that\n * @return {Boolean}\n */\n lte(that: IPoint): boolean {\n return this.x <= that.x && this.y <= that.y;\n }\n\n /**\n\n * Returns true if this point is greater another one\n * @param {Point} that\n * @return {Boolean}\n */\n gt(that: IPoint): boolean {\n return this.x > that.x && this.y > that.y;\n }\n\n /**\n * Returns true if this point is greater than or equal to another one\n * @param {Point} that\n * @return {Boolean}\n */\n gte(that: IPoint): boolean {\n return this.x >= that.x && this.y >= that.y;\n }\n\n /**\n * Returns new point which is the result of linear interpolation with this one and another one\n * @param {Point} that\n * @param {Number} t , position of interpolation, between 0 and 1 default 0.5\n * @return {Point}\n */\n lerp(that: IPoint, t = 0.5): Point {\n t = Math.max(Math.min(1, t), 0);\n return new Point(\n this.x + (that.x - this.x) * t,\n this.y + (that.y - this.y) * t\n );\n }\n\n /**\n * Returns distance from this point and another one\n * @param {Point} that\n * @return {Number}\n */\n distanceFrom(that: IPoint): number {\n const dx = this.x - that.x,\n dy = this.y - that.y;\n return Math.sqrt(dx * dx + dy * dy);\n }\n\n /**\n * Returns the point between this point and another one\n * @param {Point} that\n * @return {Point}\n */\n midPointFrom(that: IPoint): Point {\n return this.lerp(that);\n }\n\n /**\n * Returns a new point which is the min of this and another one\n * @param {Point} that\n * @return {Point}\n */\n min(that: IPoint): Point {\n return new Point(Math.min(this.x, that.x), Math.min(this.y, that.y));\n }\n\n /**\n * Returns a new point which is the max of this and another one\n * @param {Point} that\n * @return {Point}\n */\n max(that: IPoint): Point {\n return new Point(Math.max(this.x, that.x), Math.max(this.y, that.y));\n }\n\n /**\n * Returns string representation of this point\n * @return {String}\n */\n toString(): string {\n return this.x + ',' + this.y;\n }\n\n /**\n * Sets x/y of this point\n * @param {Number} x\n * @param {Number} y\n * @chainable\n */\n setXY(x: number, y: number) {\n this.x = x;\n this.y = y;\n return this;\n }\n\n /**\n * Sets x of this point\n * @param {Number} x\n * @chainable\n */\n setX(x: number) {\n this.x = x;\n return this;\n }\n\n /**\n * Sets y of this point\n * @param {Number} y\n * @chainable\n */\n setY(y: number) {\n this.y = y;\n return this;\n }\n\n /**\n * Sets x/y of this point from another point\n * @param {Point} that\n * @chainable\n */\n setFromPoint(that: Point) {\n this.x = that.x;\n this.y = that.y;\n return this;\n }\n\n /**\n * Swaps x/y of this point and another point\n * @param {Point} that\n */\n swap(that: Point) {\n const x = this.x,\n y = this.y;\n this.x = that.x;\n this.y = that.y;\n that.x = x;\n that.y = y;\n }\n\n /**\n * return a cloned instance of the point\n * @return {Point}\n */\n clone(): Point {\n return new Point(this.x, this.y);\n }\n\n /**\n * Rotates `point` around `origin` with `radians`\n * @static\n * @memberOf fabric.util\n * @param {Point} origin The origin of the rotation\n * @param {TRadian} radians The radians of the angle for the rotation\n * @return {Point} The new rotated point\n */\n rotate(radians: TRadian, origin: Point = originZero): Point {\n // TODO benchmark and verify the add and subtract how much cost\n // and then in case early return if no origin is passed\n const sinus = sin(radians),\n cosinus = cos(radians);\n const p = this.subtract(origin);\n const rotated = new Point(\n p.x * cosinus - p.y * sinus,\n p.x * sinus + p.y * cosinus\n );\n return rotated.add(origin);\n }\n\n /**\n * Apply transform t to point p\n * @static\n * @memberOf fabric.util\n * @param {TMat2D} t The transform\n * @param {Boolean} [ignoreOffset] Indicates that the offset should not be applied\n * @return {Point} The transformed point\n */\n transform(t: TMat2D, ignoreOffset = false): Point {\n return new Point(\n t[0] * this.x + t[2] * this.y + (ignoreOffset ? 0 : t[4]),\n t[1] * this.x + t[3] * this.y + (ignoreOffset ? 0 : t[5])\n );\n }\n}\n\nconst originZero = new Point(0, 0);\n\nfabric.Point = Point;\n","import { IPoint, Point } from '../../point.class';\nimport { TRadian } from '../../typedefs';\n\n/**\n * Rotates `vector` with `radians`\n * @static\n * @memberOf fabric.util\n * @param {Point} vector The vector to rotate (x and y)\n * @param {Number} radians The radians of the angle for the rotation\n * @return {Point} The new rotated point\n */\nexport const rotateVector = (vector: Point, radians: TRadian) =>\n vector.rotate(radians);\n\n/**\n * Creates a vetor from points represented as a point\n * @static\n * @memberOf fabric.util\n *\n * @param {Point} from\n * @param {Point} to\n * @returns {Point} vector\n */\nexport const createVector = (from: Point | IPoint, to: Point): Point =>\n new Point(to).subtract(from);\n\n/**\n * Calculates angle between 2 vectors using dot product\n * @static\n * @memberOf fabric.util\n * @param {Point} a\n * @param {Point} b\n * @returns the angle in radian between the vectors\n */\nexport const calcAngleBetweenVectors = (a: Point, b: Point): TRadian =>\n Math.acos(\n (a.x * b.x + a.y * b.y) / (Math.hypot(a.x, a.y) * Math.hypot(b.x, b.y))\n ) as TRadian;\n\n/**\n * @static\n * @memberOf fabric.util\n * @param {Point} v\n * @returns {Point} vector representing the unit vector of pointing to the direction of `v`\n */\nexport const getHatVector = (v: Point): Point =>\n v.scalarMultiply(1 / Math.hypot(v.x, v.y));\n\n/**\n * @static\n * @memberOf fabric.util\n * @param {Point} A\n * @param {Point} B\n * @param {Point} C\n * @returns {{ vector: Point, angle: number }} vector representing the bisector of A and A's angle\n */\nexport const getBisector = (a: Point, b: Point, c: Point) => {\n const ab = createVector(a, b),\n ac = createVector(a, c);\n const alpha = calcAngleBetweenVectors(ab, ac);\n // check if alpha is relative to AB->BC\n const ro = calcAngleBetweenVectors(rotateVector(ab, alpha), ac);\n const phi = ((alpha * (ro === 0 ? 1 : -1)) / 2) as TRadian;\n return {\n vector: getHatVector(rotateVector(ab, phi)),\n angle: alpha,\n };\n};\n","import type { TRadian, TDegree } from '../../typedefs';\nimport { PiBy180 } from '../../constants';\n\n/**\n * Transforms degrees to radians.\n * @static\n * @memberOf fabric.util\n * @param {TDegree} degrees value in degrees\n * @return {TRadian} value in radians\n */\nexport const degreesToRadians = (degrees: TDegree): TRadian =>\n (degrees * PiBy180) as TRadian;\n\n/**\n * Transforms radians to degrees.\n * @static\n * @memberOf fabric.util\n * @param {TRadian} radians value in radians\n * @return {TDegree} value in degrees\n */\nexport const radiansToDegrees = (radians: TRadian): TDegree =>\n (radians / PiBy180) as TDegree;\n","import type { Point } from '../../point.class';\nimport type { TRadian } from '../../typedefs';\n/**\n * Rotates `point` around `origin` with `radians`\n * @static\n * @deprecated use the Point.rotate\n * @memberOf fabric.util\n * @param {Point} origin The origin of the rotation\n * @param {Point} origin The origin of the rotation\n * @param {TRadian} radians The radians of the angle for the rotation\n * @return {Point} The new rotated point\n */\nexport const rotatePoint = (\n point: Point,\n origin: Point,\n radians: TRadian\n): Point => point.rotate(radians, origin);\n","/**\n * Returns random number between 2 specified ones.\n * @static\n * @memberOf fabric.util\n * @param {Number} min lower limit\n * @param {Number} max upper limit\n * @return {Number} random value (between min and max)\n */\nexport const getRandomInt = (min: number, max: number): number =>\n Math.floor(Math.random() * (max - min + 1)) + min;\n","/**\n *\n * @param value value to check if NaN\n * @param [valueIfNaN]\n * @returns `fallback` is `value is NaN\n */\nexport const ifNaN = (value: number, valueIfNaN?: number) => {\n return isNaN(value) && typeof valueIfNaN === 'number' ? valueIfNaN : value;\n};\n","/**\n * Removes value from an array.\n * Presence of value (and its position in an array) is determined via `Array.prototype.indexOf`\n * @static\n * @memberOf fabric.util\n * @param {Array} array\n * @param {*} value\n * @return {Array} original array\n */\nexport const removeFromArray = (array: T[], value: T): T[] => {\n const idx = array.indexOf(value);\n if (idx !== -1) {\n array.splice(idx, 1);\n }\n return array;\n};\n","import { Point } from '../../point.class';\nimport { createVector, getBisector } from './vectors';\nimport { StrokeLineJoin } from '../../typedefs';\n/**\n * Project stroke width on points returning 2 projections for each point as follows:\n * - `miter`: 2 points corresponding to the outer boundary and the inner boundary of stroke.\n * - `bevel`: 2 points corresponding to the bevel boundaries, tangent to the bisector.\n * - `round`: same as `bevel`\n * Used to calculate object's bounding box\n * @static\n * @memberOf fabric.util\n * @param {Point[]} points\n * @param {Object} options\n * @param {number} options.strokeWidth\n * @param {'miter'|'bevel'|'round'} options.strokeLineJoin\n * @param {number} options.strokeMiterLimit https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit\n * @param {boolean} options.strokeUniform\n * @param {number} options.scaleX\n * @param {number} options.scaleY\n * @param {boolean} [openPath] whether the shape is open or not, affects the calculations of the first and last points\n * @returns {Point[]} array of size 2n/4n of all suspected points\n */\n\ntype projectStrokeOnPointsOptions = {\n strokeWidth: number;\n strokeLineJoin: StrokeLineJoin;\n strokeMiterLimit: number; // https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit\n strokeUniform: boolean;\n scaleX: number;\n scaleY: number;\n};\n\nexport const projectStrokeOnPoints = (\n points: Point[],\n {\n strokeWidth,\n strokeLineJoin,\n strokeMiterLimit, // https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-miterlimit\n strokeUniform,\n scaleX,\n scaleY,\n }: projectStrokeOnPointsOptions,\n openPath: boolean\n): Point[] => {\n const coords: Point[] = [],\n s = strokeWidth / 2,\n strokeUniformScalar = strokeUniform\n ? new Point(1 / scaleX, 1 / scaleY)\n : new Point(1, 1),\n getStrokeHatVector = (v: Point) => {\n const scalar = s / Math.hypot(v.x, v.y);\n return new Point(\n v.x * scalar * strokeUniformScalar.x,\n v.y * scalar * strokeUniformScalar.y\n );\n };\n if (points.length <= 1) {\n return coords;\n }\n points.forEach(function (p, index) {\n const A = new Point(p.x, p.y);\n let B, C;\n if (index === 0) {\n C = points[index + 1];\n B = openPath\n ? getStrokeHatVector(createVector(C, A)).add(A)\n : points[points.length - 1];\n } else if (index === points.length - 1) {\n B = points[index - 1];\n C = openPath ? getStrokeHatVector(createVector(B, A)).add(A) : points[0];\n } else {\n B = points[index - 1];\n C = points[index + 1];\n }\n const bisector = getBisector(A, B, C),\n bisectorVector = bisector.vector,\n alpha = bisector.angle;\n let scalar, miterVector;\n if (strokeLineJoin === StrokeLineJoin.miter) {\n scalar = -s / Math.sin(alpha / 2);\n miterVector = new Point(\n bisectorVector.x * scalar * strokeUniformScalar.x,\n bisectorVector.y * scalar * strokeUniformScalar.y\n );\n if (Math.hypot(miterVector.x, miterVector.y) / s <= strokeMiterLimit) {\n coords.push(A.add(miterVector));\n coords.push(A.subtract(miterVector));\n return;\n }\n }\n scalar = -s * Math.SQRT2;\n miterVector = new Point(\n bisectorVector.x * scalar * strokeUniformScalar.x,\n bisectorVector.y * scalar * strokeUniformScalar.y\n );\n coords.push(A.add(miterVector));\n coords.push(A.subtract(miterVector));\n });\n return coords;\n};\n","/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? 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Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n","import { cos } from './cos';\nimport { sin } from './sin';\nimport { degreesToRadians } from './radiansDegreesConversion';\nimport { iMatrix, PiBy180 } from '../../constants';\nimport { IPoint, Point } from '../../point.class';\nimport { TDegree, TMat2D } from '../../typedefs';\n\ntype TRotateMatrixArgs = {\n angle?: TDegree;\n};\n\ntype TTranslateMatrixArgs = {\n translateX?: number;\n translateY?: number;\n};\n\nexport type TScaleMatrixArgs = {\n scaleX?: number;\n scaleY?: number;\n flipX?: boolean;\n flipY?: boolean;\n skewX?: TDegree;\n skewY?: TDegree;\n};\n\nexport type TComposeMatrixArgs = TTranslateMatrixArgs &\n TRotateMatrixArgs &\n TScaleMatrixArgs;\n/**\n * Apply transform t to point p\n * @static\n * @memberOf fabric.util\n * @param {Point | IPoint} p The point to transform\n * @param {Array} t The transform\n * @param {Boolean} [ignoreOffset] Indicates that the offset should not be applied\n * @return {Point} The transformed point\n */\nexport const transformPoint = (\n p: Point | IPoint,\n t: TMat2D,\n ignoreOffset?: boolean\n): Point => new Point(p).transform(t, ignoreOffset);\n\n/**\n * Invert transformation t\n * @static\n * @memberOf fabric.util\n * @param {Array} t The transform\n * @return {Array} The inverted transform\n */\nexport const invertTransform = (t: TMat2D): TMat2D => {\n const a = 1 / (t[0] * t[3] - t[1] * t[2]),\n r = [a * t[3], -a * t[1], -a * t[2], a * t[0], 0, 0] as TMat2D,\n { x, y } = transformPoint(new Point(t[4], t[5]), r, true);\n r[4] = -x;\n r[5] = -y;\n return r;\n};\n\n/**\n * Multiply matrix A by matrix B to nest transformations\n * @static\n * @memberOf fabric.util\n * @param {TMat2D} a First transformMatrix\n * @param {TMat2D} b Second transformMatrix\n * @param {Boolean} is2x2 flag to multiply matrices as 2x2 matrices\n * @return {TMat2D} The product of the two transform matrices\n */\nexport const multiplyTransformMatrices = (\n a: TMat2D,\n b: TMat2D,\n is2x2?: boolean\n): TMat2D =>\n [\n a[0] * b[0] + a[2] * b[1],\n a[1] * b[0] + a[3] * b[1],\n a[0] * b[2] + a[2] * b[3],\n a[1] * b[2] + a[3] * b[3],\n is2x2 ? 0 : a[0] * b[4] + a[2] * b[5] + a[4],\n is2x2 ? 0 : a[1] * b[4] + a[3] * b[5] + a[5],\n ] as TMat2D;\n\n/**\n * Decomposes standard 2x3 matrix into transform components\n * @static\n * @memberOf fabric.util\n * @param {TMat2D} a transformMatrix\n * @return {Object} Components of transform\n */\nexport const qrDecompose = (\n a: TMat2D\n): Required> => {\n const angle = Math.atan2(a[1], a[0]),\n denom = Math.pow(a[0], 2) + Math.pow(a[1], 2),\n scaleX = Math.sqrt(denom),\n scaleY = (a[0] * a[3] - a[2] * a[1]) / scaleX,\n skewX = Math.atan2(a[0] * a[2] + a[1] * a[3], denom);\n return {\n angle: (angle / PiBy180) as TDegree,\n scaleX,\n scaleY,\n skewX: (skewX / PiBy180) as TDegree,\n skewY: 0 as TDegree,\n translateX: a[4],\n translateY: a[5],\n };\n};\n\n/**\n * Returns a transform matrix starting from an object of the same kind of\n * the one returned from qrDecompose, useful also if you want to calculate some\n * transformations from an object that is not enlived yet\n * @static\n * @memberOf fabric.util\n * @param {Object} options\n * @param {Number} [options.angle] angle in degrees\n * @return {TMat2D} transform matrix\n */\n\nexport const calcRotateMatrix = ({ angle }: TRotateMatrixArgs): TMat2D => {\n if (!angle) {\n return iMatrix;\n }\n const theta = degreesToRadians(angle),\n cosin = cos(theta),\n sinus = sin(theta);\n return [cosin, sinus, -sinus, cosin, 0, 0];\n};\n\n/**\n * Returns a transform matrix starting from an object of the same kind of\n * the one returned from qrDecompose, useful also if you want to calculate some\n * transformations from an object that is not enlived yet.\n * is called DimensionsTransformMatrix because those properties are the one that influence\n * the size of the resulting box of the object.\n * @static\n * @memberOf fabric.util\n * @param {Object} options\n * @param {Number} [options.scaleX]\n * @param {Number} [options.scaleY]\n * @param {Boolean} [options.flipX]\n * @param {Boolean} [options.flipY]\n * @param {Number} [options.skewX]\n * @param {Number} [options.skewY]\n * @return {Number[]} transform matrix\n */\nexport const calcDimensionsMatrix = ({\n scaleX = 1,\n scaleY = 1,\n flipX = false,\n flipY = false,\n skewX = 0 as TDegree,\n skewY = 0 as TDegree,\n}: TScaleMatrixArgs) => {\n let scaleMatrix = iMatrix;\n if (scaleX !== 1 || scaleY !== 1 || flipX || flipY) {\n scaleMatrix = [\n flipX ? -scaleX : scaleX,\n 0,\n 0,\n flipY ? -scaleY : scaleY,\n 0,\n 0,\n ] as TMat2D;\n }\n if (skewX) {\n scaleMatrix = multiplyTransformMatrices(\n scaleMatrix,\n [1, 0, Math.tan(degreesToRadians(skewX)), 1] as unknown as TMat2D,\n true\n );\n }\n if (skewY) {\n scaleMatrix = multiplyTransformMatrices(\n scaleMatrix,\n [1, Math.tan(degreesToRadians(skewY)), 0, 1] as unknown as TMat2D,\n true\n );\n }\n return scaleMatrix;\n};\n\n/**\n * Returns a transform matrix starting from an object of the same kind of\n * the one returned from qrDecompose, useful also if you want to calculate some\n * transformations from an object that is not enlived yet\n * @static\n * @memberOf fabric.util\n * @param {Object} options\n * @param {Number} [options.angle]\n * @param {Number} [options.scaleX]\n * @param {Number} [options.scaleY]\n * @param {Boolean} [options.flipX]\n * @param {Boolean} [options.flipY]\n * @param {Number} [options.skewX]\n * @param {Number} [options.skewY]\n * @param {Number} [options.translateX]\n * @param {Number} [options.translateY]\n * @return {Number[]} transform matrix\n */\n\nexport const composeMatrix = ({\n translateX = 0,\n translateY = 0,\n angle = 0 as TDegree,\n ...otherOptions\n}: TComposeMatrixArgs): TMat2D => {\n let matrix = [1, 0, 0, 1, translateX, translateY] as TMat2D;\n if (angle) {\n matrix = multiplyTransformMatrices(matrix, calcRotateMatrix({ angle }));\n }\n const scaleMatrix = calcDimensionsMatrix(otherOptions);\n if (scaleMatrix !== iMatrix) {\n matrix = multiplyTransformMatrices(matrix, scaleMatrix);\n }\n return matrix;\n};\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\n\n/**\n * Copies all enumerable properties of one js object to another\n * this does not and cannot compete with generic utils.\n * Does not clone or extend fabric.Object subclasses.\n * This is mostly for internal use and has extra handling for fabricJS objects\n * it skips the canvas and group properties in deep cloning.\n * @memberOf fabric.util.object\n * @param {Object} destination Where to copy to\n * @param {Object} source Where to copy from\n * @param {Boolean} [deep] Whether to extend nested objects\n * @return {Object}\n */\n\nexport const extend = (destination, source, deep) => {\n // the deep clone is for internal use, is not meant to avoid\n // javascript traps or cloning html element or self referenced objects.\n if (deep) {\n if (!fabric.isLikelyNode && source instanceof Element) {\n // avoid cloning deep images, canvases,\n destination = source;\n } else if (Array.isArray(source)) {\n destination = [];\n for (let i = 0, len = source.length; i < len; i++) {\n destination[i] = extend({}, source[i], deep);\n }\n } else if (source && typeof source === 'object') {\n for (const property in source) {\n if (property === 'canvas' || property === 'group') {\n // we do not want to clone this props at all.\n // we want to keep the keys in the copy\n destination[property] = null;\n } else if (Object.prototype.hasOwnProperty.call(source, property)) {\n destination[property] = extend({}, source[property], deep);\n }\n }\n } else {\n // this sounds odd for an extend but is ok for recursive use\n destination = source;\n }\n } else {\n for (const property in source) {\n destination[property] = source[property];\n }\n }\n return destination;\n};\n\n/**\n * Creates an empty object and copies all enumerable properties of another object to it\n * This method is mostly for internal use, and not intended for duplicating shapes in canvas.\n * @memberOf fabric.util.object\n * @param {Object} object Object to clone\n * @param {Boolean} [deep] Whether to clone nested objects\n * @return {Object}\n */\n\n//TODO: this function return an empty object if you try to clone null\nexport const clone = (object: any, deep: boolean) =>\n deep ? extend({}, object, deep) : { ...object };\n","import { clone } from '../lang_object';\n\n/**\n * @memberOf fabric.util\n * @param {Object} prevStyle first style to compare\n * @param {Object} thisStyle second style to compare\n * @param {boolean} forTextSpans whether to check overline, underline, and line-through properties\n * @return {boolean} true if the style changed\n */\nexport const hasStyleChanged = (\n prevStyle: any,\n thisStyle: any,\n forTextSpans = false\n) =>\n prevStyle.fill !== thisStyle.fill ||\n prevStyle.stroke !== thisStyle.stroke ||\n prevStyle.strokeWidth !== thisStyle.strokeWidth ||\n prevStyle.fontSize !== thisStyle.fontSize ||\n prevStyle.fontFamily !== thisStyle.fontFamily ||\n prevStyle.fontWeight !== thisStyle.fontWeight ||\n prevStyle.fontStyle !== thisStyle.fontStyle ||\n prevStyle.textBackgroundColor !== thisStyle.textBackgroundColor ||\n prevStyle.deltaY !== thisStyle.deltaY ||\n (forTextSpans &&\n (prevStyle.overline !== thisStyle.overline ||\n prevStyle.underline !== thisStyle.underline ||\n prevStyle.linethrough !== thisStyle.linethrough));\n\n/**\n * Returns the array form of a text object's inline styles property with styles grouped in ranges\n * rather than per character. This format is less verbose, and is better suited for storage\n * so it is used in serialization (not during runtime).\n * @memberOf fabric.util\n * @param {object} styles per character styles for a text object\n * @param {String} text the text string that the styles are applied to\n * @return {{start: number, end: number, style: object}[]}\n */\nexport const stylesToArray = (styles: any, text: string) => {\n const textLines = text.split('\\n'),\n stylesArray = [];\n let charIndex = -1,\n prevStyle = {};\n // clone style structure to prevent mutation\n styles = clone(styles, true);\n\n //loop through each textLine\n for (let i = 0; i < textLines.length; i++) {\n if (!styles[i]) {\n //no styles exist for this line, so add the line's length to the charIndex total\n charIndex += textLines[i].length;\n continue;\n }\n //loop through each character of the current line\n for (let c = 0; c < textLines[i].length; c++) {\n charIndex++;\n const thisStyle = styles[i][c];\n //check if style exists for this character\n if (thisStyle && Object.keys(thisStyle).length > 0) {\n if (hasStyleChanged(prevStyle, thisStyle, true)) {\n stylesArray.push({\n start: charIndex,\n end: charIndex + 1,\n style: thisStyle,\n });\n } else {\n //if style is the same as previous character, increase end index\n stylesArray[stylesArray.length - 1].end++;\n }\n }\n prevStyle = thisStyle || {};\n }\n }\n return stylesArray;\n};\n\n/**\n * Returns the object form of the styles property with styles that are assigned per\n * character rather than grouped by range. This format is more verbose, and is\n * only used during runtime (not for serialization/storage)\n * @memberOf fabric.util\n * @param {Array} styles the serialized form of a text object's styles\n * @param {String} text the text string that the styles are applied to\n * @return {Object}\n */\nexport const stylesFromArray = (styles: any, text: string) => {\n if (!Array.isArray(styles)) {\n return styles;\n }\n const textLines = text.split('\\n'),\n stylesObject = {} as any;\n let charIndex = -1,\n styleIndex = 0;\n //loop through each textLine\n for (let i = 0; i < textLines.length; i++) {\n //loop through each character of the current line\n for (let c = 0; c < textLines[i].length; c++) {\n charIndex++;\n //check if there's a style collection that includes the current character\n if (\n styles[styleIndex] &&\n styles[styleIndex].start <= charIndex &&\n charIndex < styles[styleIndex].end\n ) {\n //create object for line index if it doesn't exist\n stylesObject[i] = stylesObject[i] || {};\n //assign a style at this character's index\n stylesObject[i][c] = { ...styles[styleIndex].style };\n //if character is at the end of the current style collection, move to the next\n if (charIndex === styles[styleIndex].end - 1) {\n styleIndex++;\n }\n }\n }\n }\n return stylesObject;\n};\n","import { fabric } from '../../../HEADER';\nimport { ImageFormat } from '../../typedefs';\n/**\n * Creates canvas element\n * @static\n * @memberOf fabric.util\n * @return {CanvasElement} initialized canvas element\n */\nexport const createCanvasElement = (): HTMLCanvasElement =>\n fabric.document.createElement('canvas');\n\n/**\n * Creates image element (works on client and node)\n * @static\n * @memberOf fabric.util\n * @return {HTMLImageElement} HTML image element\n */\nexport const createImage = (): HTMLImageElement =>\n fabric.document.createElement('img');\n\n/**\n * Creates a canvas element that is a copy of another and is also painted\n * @param {CanvasElement} canvas to copy size and content of\n * @static\n * @memberOf fabric.util\n * @return {CanvasElement} initialized canvas element\n */\nexport const copyCanvasElement = (\n canvas: HTMLCanvasElement\n): HTMLCanvasElement => {\n const newCanvas = createCanvasElement();\n newCanvas.width = canvas.width;\n newCanvas.height = canvas.height;\n newCanvas.getContext('2d')?.drawImage(canvas, 0, 0);\n return newCanvas;\n};\n\n/**\n * since 2.6.0 moved from canvas instance to utility.\n * possibly useless\n * @param {CanvasElement} canvasEl to copy size and content of\n * @param {String} format 'jpeg' or 'png', in some browsers 'webp' is ok too\n * @param {Number} quality <= 1 and > 0\n * @static\n * @memberOf fabric.util\n * @return {String} data url\n */\nexport const toDataURL = (\n canvasEl: HTMLCanvasElement,\n format: ImageFormat,\n quality: number\n) => canvasEl.toDataURL(`image/${format}`, quality);\n","/**\n * A wrapper around Number#toFixed, which contrary to native method returns number, not string.\n * @static\n * @memberOf fabric.util\n * @param {number|string} number number to operate on\n * @param {number} fractionDigits number of fraction digits to \"leave\"\n * @return {number}\n */\nexport const toFixed = (number: number | string, fractionDigits: number) =>\n parseFloat(Number(number).toFixed(fractionDigits));\n","import { fabric } from '../../../HEADER';\nimport { SVGElementName, SupportedSVGUnit, TMat2D } from '../../typedefs';\nimport { DEFAULT_SVG_FONT_SIZE } from '../../constants';\nimport { toFixed } from './toFixed';\nimport { config } from '../../config';\n/**\n * Returns array of attributes for given svg that fabric parses\n * @memberOf fabric.util\n * @param {SVGElementName} type Type of svg element (eg. 'circle')\n * @return {Array} string names of supported attributes\n */\nexport const getSvgAttributes = (type: SVGElementName) => {\n const commonAttributes = ['instantiated_by_use', 'style', 'id', 'class'];\n switch (type) {\n case SVGElementName.linearGradient:\n return commonAttributes.concat([\n 'x1',\n 'y1',\n 'x2',\n 'y2',\n 'gradientUnits',\n 'gradientTransform',\n ]);\n case 'radialGradient':\n return commonAttributes.concat([\n 'gradientUnits',\n 'gradientTransform',\n 'cx',\n 'cy',\n 'r',\n 'fx',\n 'fy',\n 'fr',\n ]);\n case 'stop':\n return commonAttributes.concat(['offset', 'stop-color', 'stop-opacity']);\n }\n return commonAttributes;\n};\n\n/**\n * Converts from attribute value to pixel value if applicable.\n * Returns converted pixels or original value not converted.\n * @param {string} value number to operate on\n * @param {number} fontSize\n * @return {number}\n */\nexport const parseUnit = (value: string, fontSize: number) => {\n const unit = /\\D{0,2}$/.exec(value),\n number = parseFloat(value);\n if (!fontSize) {\n fontSize = DEFAULT_SVG_FONT_SIZE;\n }\n const dpi = config.DPI;\n switch (unit?.[0]) {\n case SupportedSVGUnit.mm:\n return (number * dpi) / 25.4;\n\n case SupportedSVGUnit.cm:\n return (number * dpi) / 2.54;\n\n case SupportedSVGUnit.in:\n return number * dpi;\n\n case SupportedSVGUnit.pt:\n return (number * dpi) / 72; // or * 4 / 3\n\n case SupportedSVGUnit.pc:\n return ((number * dpi) / 72) * 12; // or * 16\n\n case SupportedSVGUnit.em:\n return number * fontSize;\n\n default:\n return number;\n }\n};\n\n/**\n * Groups SVG elements (usually those retrieved from SVG document)\n * @static\n * @memberOf fabric.util\n * @param {Array} elements fabric.Object(s) parsed from svg, to group\n * @return {fabric.Object|fabric.Group}\n */\nexport const groupSVGElements = (elements: any[]) => {\n if (elements && elements.length === 1) {\n return elements[0];\n }\n return new fabric.Group(elements);\n};\n\nconst enum MeetOrSlice {\n meet = 'meet',\n slice = 'slice',\n}\n\nconst enum MinMidMax {\n min = 'Min',\n mid = 'Mid',\n max = 'Max',\n none = 'none',\n}\n\ntype TPreserveArParsed = {\n meetOrSlice: MeetOrSlice;\n alignX: MinMidMax;\n alignY: MinMidMax;\n};\n\n// align can be either none or undefined or a combination of mid/max\nconst parseAlign = (align: string): MinMidMax[] => {\n //divide align in alignX and alignY\n if (align && align !== MinMidMax.none) {\n return [align.slice(1, 4) as MinMidMax, align.slice(5, 8) as MinMidMax];\n } else if (align === MinMidMax.none) {\n return [align, align];\n }\n return [MinMidMax.mid, MinMidMax.mid];\n};\n\n/**\n * Parse preserveAspectRatio attribute from element\n * https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/preserveAspectRatio\n * @param {string} attribute to be parsed\n * @return {Object} an object containing align and meetOrSlice attribute\n */\nexport const parsePreserveAspectRatioAttribute = (\n attribute: string\n): TPreserveArParsed => {\n const [firstPart, secondPart] = attribute.trim().split(' ') as [\n MinMidMax,\n MeetOrSlice | undefined\n ];\n const [alignX, alignY] = parseAlign(firstPart);\n return {\n meetOrSlice: secondPart || MeetOrSlice.meet,\n alignX,\n alignY,\n };\n};\n\n/**\n * given an array of 6 number returns something like `\"matrix(...numbers)\"`\n * @memberOf fabric.util\n * @param {TMat2D} transform an array with 6 numbers\n * @return {String} transform matrix for svg\n */\nexport const matrixToSVG = (transform: TMat2D) =>\n 'matrix(' +\n transform\n .map((value) => toFixed(value, config.NUM_FRACTION_DIGITS))\n .join(' ') +\n ')';\n","interface IWithDimensions {\n width: number;\n height: number;\n}\n\n/**\n * Finds the scale for the object source to fit inside the object destination,\n * keeping aspect ratio intact.\n * respect the total allowed area for the cache.\n * @memberOf fabric.util\n * @param {Object | fabric.Object} source\n * @param {Number} source.height natural unscaled height of the object\n * @param {Number} source.width natural unscaled width of the object\n * @param {Object | fabric.Object} destination\n * @param {Number} destination.height natural unscaled height of the object\n * @param {Number} destination.width natural unscaled width of the object\n * @return {Number} scale factor to apply to source to fit into destination\n */\nexport const findScaleToFit = (\n source: IWithDimensions,\n destination: IWithDimensions\n) =>\n Math.min(\n destination.width / source.width,\n destination.height / source.height\n );\n\n/**\n * Finds the scale for the object source to cover entirely the object destination,\n * keeping aspect ratio intact.\n * respect the total allowed area for the cache.\n * @memberOf fabric.util\n * @param {Object | fabric.Object} source\n * @param {Number} source.height natural unscaled height of the object\n * @param {Number} source.width natural unscaled width of the object\n * @param {Object | fabric.Object} destination\n * @param {Number} destination.height natural unscaled height of the object\n * @param {Number} destination.width natural unscaled width of the object\n * @return {Number} scale factor to apply to source to cover destination\n */\nexport const findScaleToCover = (\n source: IWithDimensions,\n destination: IWithDimensions\n) =>\n Math.max(\n destination.width / source.width,\n destination.height / source.height\n );\n","export const capValue = (min: number, value: number, max: number) =>\n Math.max(min, Math.min(value, max));\n","import { Point } from '../../point.class';\n\n/**\n * Calculates bounding box (left, top, width, height) from given `points`\n * @static\n * @memberOf fabric.util\n * @param {Point[]} points\n * @return {Object} Object with left, top, width, height properties\n */\nexport const makeBoundingBoxFromPoints = (points: Point[]) => {\n const { min, max } = points.reduce(\n ({ min, max }, curr) => {\n return {\n min: min.min(curr),\n max: max.max(curr),\n };\n },\n { min: points[0], max: points[0] }\n );\n\n const size = max.subtract(min);\n\n return {\n left: min.x,\n top: min.y,\n width: size.x,\n height: size.y,\n };\n};\n","import { Point } from '../../point.class';\nimport { TMat2D } from '../../typedefs';\nimport { makeBoundingBoxFromPoints } from './boundingBoxFromPoints';\nimport {\n invertTransform,\n multiplyTransformMatrices,\n qrDecompose,\n calcDimensionsMatrix,\n} from './matrix';\nimport type { TComposeMatrixArgs, TScaleMatrixArgs } from './matrix';\n\ntype FabricObject = any;\n\n/**\n * given an object and a transform, apply the inverse transform to the object,\n * this is equivalent to remove from that object that transformation, so that\n * added in a space with the removed transform, the object will be the same as before.\n * Removing from an object a transform that scale by 2 is like scaling it by 1/2.\n * Removing from an object a transform that rotate by 30deg is like rotating by 30deg\n * in the opposite direction.\n * This util is used to add objects inside transformed groups or nested groups.\n * @memberOf fabric.util\n * @param {fabric.Object} object the object you want to transform\n * @param {Array} transform the destination transform\n */\nexport const removeTransformFromObject = (\n object: FabricObject,\n transform: TMat2D\n) => {\n const inverted = invertTransform(transform),\n finalTransform = multiplyTransformMatrices(\n inverted,\n object.calcOwnMatrix()\n );\n applyTransformToObject(object, finalTransform);\n};\n\n/**\n * given an object and a transform, apply the transform to the object.\n * this is equivalent to change the space where the object is drawn.\n * Adding to an object a transform that scale by 2 is like scaling it by 2.\n * This is used when removing an object from an active selection for example.\n * @memberOf fabric.util\n * @param {fabric.Object} object the object you want to transform\n * @param {Array} transform the destination transform\n */\nexport const addTransformToObject = (object: FabricObject, transform: TMat2D) =>\n applyTransformToObject(\n object,\n multiplyTransformMatrices(transform, object.calcOwnMatrix())\n );\n\n/**\n * discard an object transform state and apply the one from the matrix.\n * @memberOf fabric.util\n * @param {fabric.Object} object the object you want to transform\n * @param {Array} transform the destination transform\n */\nexport const applyTransformToObject = (\n object: FabricObject,\n transform: TMat2D\n) => {\n const { translateX, translateY, scaleX, scaleY, ...otherOptions } =\n qrDecompose(transform),\n center = new Point(translateX, translateY);\n object.flipX = false;\n object.flipY = false;\n Object.assign(object, otherOptions);\n object.set({ scaleX, scaleY });\n object.setPositionByOrigin(center, 'center', 'center');\n};\n/**\n * reset an object transform state to neutral. Top and left are not accounted for\n * @static\n * @memberOf fabric.util\n * @param {fabric.Object} target object to transform\n */\nexport const resetObjectTransform = (target: FabricObject) => {\n target.scaleX = 1;\n target.scaleY = 1;\n target.skewX = 0;\n target.skewY = 0;\n target.flipX = false;\n target.flipY = false;\n target.rotate(0);\n};\n\n/**\n * Extract Object transform values\n * @static\n * @memberOf fabric.util\n * @param {fabric.Object} target object to read from\n * @return {Object} Components of transform\n */\nexport const saveObjectTransform = (\n target: FabricObject\n): TComposeMatrixArgs & { left: number; top: number } => ({\n scaleX: target.scaleX,\n scaleY: target.scaleY,\n skewX: target.skewX,\n skewY: target.skewY,\n angle: target.angle,\n left: target.left,\n flipX: target.flipX,\n flipY: target.flipY,\n top: target.top,\n});\n\n/**\n * given a width and height, return the size of the bounding box\n * that can contains the box with width/height with applied transform\n * described in options.\n * Use to calculate the boxes around objects for controls.\n * @memberOf fabric.util\n * @param {Number} width\n * @param {Number} height\n * @param {Object} options\n * @param {Number} options.scaleX\n * @param {Number} options.scaleY\n * @param {Number} options.skewX\n * @param {Number} options.skewY\n * @returns {Point} size\n */\nexport const sizeAfterTransform = (\n width: number,\n height: number,\n options: TScaleMatrixArgs\n) => {\n const dimX = width / 2,\n dimY = height / 2,\n transformMatrix = calcDimensionsMatrix(options),\n points = [\n new Point(-dimX, -dimY),\n new Point(dimX, -dimY),\n new Point(-dimX, dimY),\n new Point(dimX, dimY),\n ].map((p) => p.transform(transformMatrix)),\n bbox = makeBoundingBoxFromPoints(points);\n return new Point(bbox.width, bbox.height);\n};\n","import { iMatrix } from '../../constants';\nimport type { Point } from '../../point.class';\nimport type { TMat2D } from '../../typedefs';\nimport { TObject } from '../../__types__';\nimport { invertTransform, multiplyTransformMatrices } from './matrix';\nimport { applyTransformToObject } from './objectTransforms';\n\nexport const enum ObjectRelation {\n sibling = 'sibling',\n child = 'child',\n}\n\n/**\n * We are actually looking for the transformation from the destination plane to the source plane (change of basis matrix)\\\n * The object will exist on the destination plane and we want it to seem unchanged by it so we invert the destination matrix (`to`) and then apply the source matrix (`from`)\n * @param [from]\n * @param [to]\n * @returns\n */\nexport const calcPlaneChangeMatrix = (\n from: TMat2D = iMatrix,\n to: TMat2D = iMatrix\n) => multiplyTransformMatrices(invertTransform(to), from);\n\n/**\n * Sends a point from the source coordinate plane to the destination coordinate plane.\\\n * From the canvas/viewer's perspective the point remains unchanged.\n *\n * @example Send point from canvas plane to group plane\n * var obj = new fabric.Rect({ left: 20, top: 20, width: 60, height: 60, strokeWidth: 0 });\n * var group = new fabric.Group([obj], { strokeWidth: 0 });\n * var sentPoint1 = fabric.util.sendPointToPlane(new Point(50, 50), undefined, group.calcTransformMatrix());\n * var sentPoint2 = fabric.util.sendPointToPlane(new Point(50, 50), fabric.iMatrix, group.calcTransformMatrix());\n * console.log(sentPoint1, sentPoint2) // both points print (0,0) which is the center of group\n *\n * @static\n * @memberOf fabric.util\n * @see {fabric.util.transformPointRelativeToCanvas} for transforming relative to canvas\n * @param {Point} point\n * @param {TMat2D} [from] plane matrix containing object. Passing `undefined` is equivalent to passing the identity matrix, which means `point` exists in the canvas coordinate plane.\n * @param {TMat2D} [to] destination plane matrix to contain object. Passing `undefined` means `point` should be sent to the canvas coordinate plane.\n * @returns {Point} transformed point\n */\nexport const sendPointToPlane = (\n point: Point,\n from: TMat2D = iMatrix,\n to: TMat2D = iMatrix\n): Point =>\n // we are actually looking for the transformation from the destination plane to the source plane (which is a linear mapping)\n // the object will exist on the destination plane and we want it to seem unchanged by it so we reverse the destination matrix (to) and then apply the source matrix (from)\n point.transform(calcPlaneChangeMatrix(from, to));\n\n/**\n * Transform point relative to canvas.\n * From the viewport/viewer's perspective the point remains unchanged.\n *\n * `child` relation means `point` exists in the coordinate plane created by `canvas`.\n * In other words point is measured acoording to canvas' top left corner\n * meaning that if `point` is equal to (0,0) it is positioned at canvas' top left corner.\n *\n * `sibling` relation means `point` exists in the same coordinate plane as canvas.\n * In other words they both relate to the same (0,0) and agree on every point, which is how an event relates to canvas.\n *\n * @static\n * @memberOf fabric.util\n * @param {Point} point\n * @param {fabric.StaticCanvas} canvas\n * @param {'sibling'|'child'} relationBefore current relation of point to canvas\n * @param {'sibling'|'child'} relationAfter desired relation of point to canvas\n * @returns {Point} transformed point\n */\nexport const transformPointRelativeToCanvas = (\n point: Point,\n canvas: any,\n relationBefore: ObjectRelation,\n relationAfter: ObjectRelation\n): Point => {\n // is this still needed with TS?\n if (\n relationBefore !== ObjectRelation.child &&\n relationBefore !== ObjectRelation.sibling\n ) {\n throw new Error('fabric.js: received bad argument ' + relationBefore);\n }\n if (\n relationAfter !== ObjectRelation.child &&\n relationAfter !== ObjectRelation.sibling\n ) {\n throw new Error('fabric.js: received bad argument ' + relationAfter);\n }\n if (relationBefore === relationAfter) {\n return point;\n }\n const t = canvas.viewportTransform;\n return point.transform(relationAfter === 'child' ? invertTransform(t) : t);\n};\n\n/**\n *\n * A util that abstracts applying transform to objects.\\\n * Sends `object` to the destination coordinate plane by applying the relevant transformations.\\\n * Changes the space/plane where `object` is drawn.\\\n * From the canvas/viewer's perspective `object` remains unchanged.\n *\n * @example Move clip path from one object to another while preserving it's appearance as viewed by canvas/viewer\n * let obj, obj2;\n * let clipPath = new fabric.Circle({ radius: 50 });\n * obj.clipPath = clipPath;\n * // render\n * fabric.util.sendObjectToPlane(clipPath, obj.calcTransformMatrix(), obj2.calcTransformMatrix());\n * obj.clipPath = undefined;\n * obj2.clipPath = clipPath;\n * // render, clipPath now clips obj2 but seems unchanged from the eyes of the viewer\n *\n * @example Clip an object's clip path with an existing object\n * let obj, existingObj;\n * let clipPath = new fabric.Circle({ radius: 50 });\n * obj.clipPath = clipPath;\n * let transformTo = fabric.util.multiplyTransformMatrices(obj.calcTransformMatrix(), clipPath.calcTransformMatrix());\n * fabric.util.sendObjectToPlane(existingObj, existingObj.group?.calcTransformMatrix(), transformTo);\n * clipPath.clipPath = existingObj;\n *\n * @static\n * @memberof fabric.util\n * @param {fabric.Object} object\n * @param {Matrix} [from] plane matrix containing object. Passing `undefined` is equivalent to passing the identity matrix, which means `object` is a direct child of canvas.\n * @param {Matrix} [to] destination plane matrix to contain object. Passing `undefined` means `object` should be sent to the canvas coordinate plane.\n * @returns {Matrix} the transform matrix that was applied to `object`\n */\nexport const sendObjectToPlane = (\n object: TObject,\n from?: TMat2D,\n to?: TMat2D\n): TMat2D => {\n const t = calcPlaneChangeMatrix(from, to);\n applyTransformToObject(\n object,\n multiplyTransformMatrices(t, object.calcOwnMatrix())\n );\n return t;\n};\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\n\n/**\n * Camelizes a string\n * @memberOf fabric.util.string\n * @param {String} string String to camelize\n * @return {String} Camelized version of a string\n */\nexport const camelize = (string: string): string =>\n string.replace(/-+(.)?/g, function (match, character) {\n return character ? character.toUpperCase() : '';\n });\n\n/**\n * Capitalizes a string\n * @memberOf fabric.util.string\n * @param {String} string String to capitalize\n * @param {Boolean} [firstLetterOnly] If true only first letter is capitalized\n * and other letters stay untouched, if false first letter is capitalized\n * and other letters are converted to lowercase.\n * @return {String} Capitalized version of a string\n */\nexport const capitalize = (string: string, firstLetterOnly = false): string =>\n `${string.charAt(0).toUpperCase()}${\n firstLetterOnly ? string.slice(1) : string.slice(1).toLowerCase()\n }`;\n\n/**\n * Escapes XML in a string\n * @memberOf fabric.util.string\n * @param {String} string String to escape\n * @return {String} Escaped version of a string\n */\nexport const escapeXml = (string: string): string =>\n string\n .replace(/&/g, '&')\n .replace(/\"/g, '"')\n .replace(/'/g, ''')\n .replace(//g, '>');\n\n/**\n * Divide a string in the user perceived single units\n * @memberOf fabric.util.string\n * @param {String} textstring String to escape\n * @return {Array} array containing the graphemes\n */\nexport const graphemeSplit = (textstring: string): string[] => {\n const graphemes = [];\n for (let i = 0, chr; i < textstring.length; i++) {\n if ((chr = getWholeChar(textstring, i)) === false) {\n continue;\n }\n graphemes.push(chr);\n }\n return graphemes;\n};\n\n// taken from mdn in the charAt doc page.\nconst getWholeChar = (str: string, i: number): string => {\n const code = str.charCodeAt(i);\n if (isNaN(code)) {\n return ''; // Position not found\n }\n if (code < 0xd800 || code > 0xdfff) {\n return str.charAt(i);\n }\n\n // High surrogate (could change last hex to 0xDB7F to treat high private\n // surrogates as single characters)\n if (0xd800 <= code && code <= 0xdbff) {\n if (str.length <= i + 1) {\n throw 'High surrogate without following low surrogate';\n }\n const next = str.charCodeAt(i + 1);\n if (0xdc00 > next || next > 0xdfff) {\n throw 'High surrogate without following low surrogate';\n }\n return str.charAt(i) + str.charAt(i + 1);\n }\n // Low surrogate (0xDC00 <= code && code <= 0xDFFF)\n if (i === 0) {\n throw 'Low surrogate without preceding high surrogate';\n }\n const prev = str.charCodeAt(i - 1);\n\n // (could change last hex to 0xDB7F to treat high private\n // surrogates as single characters)\n if (0xd800 > prev || prev > 0xdbff) {\n throw 'Low surrogate without preceding high surrogate';\n }\n // We can pass over low surrogates now as the second component\n // in a pair which we have already processed\n return false;\n};\n","import { fabric } from '../../../HEADER';\nimport { noop } from '../../constants';\nimport { TCrossOrigin } from '../../typedefs';\nimport { TObject } from '../../__types__';\nimport { camelize, capitalize } from '../lang_string';\nimport { createImage } from './dom';\n\n/**\n * Returns klass \"Class\" object of given namespace\n * @memberOf fabric.util\n * @param {String} type Type of object (eg. 'circle')\n * @param {object} namespace Namespace to get klass \"Class\" object from\n * @return {Object} klass \"Class\"\n */\nexport const getKlass = (type: string, namespace = fabric): any =>\n namespace[capitalize(camelize(type), true)];\n\ntype LoadImageOptions = {\n signal?: AbortSignal;\n crossOrigin?: TCrossOrigin;\n};\n\n/**\n * Loads image element from given url and resolve it, or catch.\n * @memberOf fabric.util\n * @param {String} url URL representing an image\n * @param {Object} [options] image loading options\n * @param {string} [options.crossOrigin] cors value for the image loading, default to anonymous\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @param {Promise} img the loaded image.\n */\nexport const loadImage = (\n url: string,\n { signal, crossOrigin = null }: LoadImageOptions = {}\n) =>\n new Promise(function (resolve, reject) {\n if (signal && signal.aborted) {\n return reject(new Error('`options.signal` is in `aborted` state'));\n }\n const img = createImage();\n let abort: EventListenerOrEventListenerObject;\n if (signal) {\n abort = function (err: Event) {\n img.src = '';\n reject(err);\n };\n signal.addEventListener('abort', abort, { once: true });\n }\n const done = function () {\n img.onload = img.onerror = null;\n abort && signal?.removeEventListener('abort', abort);\n resolve(img);\n };\n if (!url) {\n done();\n return;\n }\n img.onload = done;\n img.onerror = function () {\n abort && signal?.removeEventListener('abort', abort);\n reject(new Error('Error loading ' + img.src));\n };\n crossOrigin && (img.crossOrigin = crossOrigin);\n img.src = url;\n });\n\ntype EnlivenObjectOptions = {\n signal?: AbortSignal;\n reviver?: (arg: any, arg2: any) => void;\n namespace?: any;\n};\n\n/**\n * Creates corresponding fabric instances from their object representations\n * @static\n * @memberOf fabric.util\n * @param {Object[]} objects Objects to enliven\n * @param {object} [options]\n * @param {object} [options.namespace] Namespace to get klass \"Class\" object from\n * @param {(serializedObj: object, instance: fabric.Object) => any} [options.reviver] Method for further parsing of object elements,\n * called after each fabric object created.\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\nexport const enlivenObjects = (\n objects: any[],\n { signal, reviver = noop, namespace = fabric }: EnlivenObjectOptions = {}\n) =>\n new Promise((resolve, reject) => {\n const instances: TObject[] = [];\n signal && signal.addEventListener('abort', reject, { once: true });\n Promise.all(\n objects.map((obj) =>\n getKlass(obj.type, namespace)\n .fromObject(obj, {\n signal,\n reviver,\n namespace,\n })\n .then((fabricInstance: TObject) => {\n reviver(obj, fabricInstance);\n instances.push(fabricInstance);\n return fabricInstance;\n })\n )\n )\n .then(resolve)\n .catch((error) => {\n // cleanup\n instances.forEach(function (instance) {\n instance.dispose && instance.dispose();\n });\n reject(error);\n })\n .finally(() => {\n signal && signal.removeEventListener('abort', reject);\n });\n });\n\n/**\n * Creates corresponding fabric instances residing in an object, e.g. `clipPath`\n * @static\n * @memberOf fabric.util\n * @param {Object} object with properties to enlive ( fill, stroke, clipPath, path )\n * @param {object} [options]\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise<{[key:string]:fabric.Object|fabric.Pattern|fabric.Gradient|null}>} the input object with enlived values\n */\nexport const enlivenObjectEnlivables = (\n serializedObject: any,\n { signal }: { signal?: AbortSignal } = {}\n) =>\n new Promise((resolve, reject) => {\n const instances: any[] = [];\n signal && signal.addEventListener('abort', reject, { once: true });\n // enlive every possible property\n const promises = Object.values(serializedObject).map((value: any) => {\n if (!value) {\n return value;\n }\n // gradient\n if (value.colorStops) {\n return new fabric.Gradient(value);\n }\n // clipPath\n if (value.type) {\n return enlivenObjects([value], { signal }).then(([enlived]) => {\n instances.push(enlived);\n return enlived;\n });\n }\n // pattern\n if (value.source) {\n return fabric.Pattern.fromObject(value, { signal }).then(\n (pattern: any) => {\n instances.push(pattern);\n return pattern;\n }\n );\n }\n return value;\n });\n const keys = Object.keys(serializedObject);\n Promise.all(promises)\n .then((enlived) => {\n return enlived.reduce(function (acc, instance, index) {\n acc[keys[index]] = instance;\n return acc;\n }, {});\n })\n .then(resolve)\n .catch(function (error) {\n // cleanup\n instances.forEach((instance) => {\n instance.dispose && instance.dispose();\n });\n reject(error);\n })\n .finally(function () {\n signal && signal.removeEventListener('abort', reject);\n });\n });\n","/**\n * Populates an object with properties of another object\n * @param {Object} source Source object\n * @param {string[]} properties Properties names to include\n * @returns object populated with the picked keys\n */\nexport const pick = (source: T, keys: (keyof T)[] = []) => {\n return keys.reduce((o, key) => {\n if (key in source) {\n o[key] = source[key];\n }\n return o;\n }, {} as Partial);\n};\n","//@ts-nocheck\n\nexport function getSvgRegex(arr) {\n return new RegExp('^(' + arr.join('|') + ')\\\\b', 'i');\n}\n","//@ts-nocheck\nimport { getSvgRegex } from './getSvgRegex';\n\nexport const cssRules = {};\nexport const gradientDefs = {};\nexport const clipPaths = {};\n\nexport const reNum = '(?:[-+]?(?:\\\\d+|\\\\d*\\\\.\\\\d+)(?:[eE][-+]?\\\\d+)?)';\n\nexport const svgNS = 'http://www.w3.org/2000/svg';\n\nexport const commaWsp = '(?:\\\\s+,?\\\\s*|,\\\\s*)';\n\nexport const rePathCommand =\n /([-+]?((\\d+\\.\\d+)|((\\d+)|(\\.\\d+)))(?:[eE][-+]?\\d+)?)/gi;\n\nexport const reFontDeclaration = new RegExp(\n '(normal|italic)?\\\\s*(normal|small-caps)?\\\\s*' +\n '(normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900)?\\\\s*(' +\n reNum +\n '(?:px|cm|mm|em|pt|pc|in)*)(?:\\\\/(normal|' +\n reNum +\n '))?\\\\s+(.*)'\n);\n\nexport const svgValidTagNames = [\n 'path',\n 'circle',\n 'polygon',\n 'polyline',\n 'ellipse',\n 'rect',\n 'line',\n 'image',\n 'text',\n ],\n svgViewBoxElements = ['symbol', 'image', 'marker', 'pattern', 'view', 'svg'],\n svgInvalidAncestors = [\n 'pattern',\n 'defs',\n 'symbol',\n 'metadata',\n 'clipPath',\n 'mask',\n 'desc',\n ],\n svgValidParents = ['symbol', 'g', 'a', 'svg', 'clipPath', 'defs'],\n attributesMap = {\n cx: 'left',\n x: 'left',\n r: 'radius',\n cy: 'top',\n y: 'top',\n display: 'visible',\n visibility: 'visible',\n transform: 'transformMatrix',\n 'fill-opacity': 'fillOpacity',\n 'fill-rule': 'fillRule',\n 'font-family': 'fontFamily',\n 'font-size': 'fontSize',\n 'font-style': 'fontStyle',\n 'font-weight': 'fontWeight',\n 'letter-spacing': 'charSpacing',\n 'paint-order': 'paintFirst',\n 'stroke-dasharray': 'strokeDashArray',\n 'stroke-dashoffset': 'strokeDashOffset',\n 'stroke-linecap': 'strokeLineCap',\n 'stroke-linejoin': 'strokeLineJoin',\n 'stroke-miterlimit': 'strokeMiterLimit',\n 'stroke-opacity': 'strokeOpacity',\n 'stroke-width': 'strokeWidth',\n 'text-decoration': 'textDecoration',\n 'text-anchor': 'textAnchor',\n opacity: 'opacity',\n 'clip-path': 'clipPath',\n 'clip-rule': 'clipRule',\n 'vector-effect': 'strokeUniform',\n 'image-rendering': 'imageSmoothing',\n },\n colorAttributes = {\n stroke: 'strokeOpacity',\n fill: 'fillOpacity',\n },\n fSize = 'font-size',\n cPath = 'clip-path';\n\nexport const svgValidTagNamesRegEx = getSvgRegex(svgValidTagNames);\n\nexport const svgViewBoxElementsRegEx = getSvgRegex(svgViewBoxElements);\n\nexport const svgInvalidAncestorsRegEx = getSvgRegex(svgInvalidAncestors);\n\nexport const svgValidParentsRegEx = getSvgRegex(svgValidParents);\n\n// http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute\n// matches, e.g.: +14.56e-12, etc.\nexport const reViewBoxAttrValue = new RegExp(\n '^' +\n '\\\\s*(' +\n reNum +\n '+)\\\\s*,?' +\n '\\\\s*(' +\n reNum +\n '+)\\\\s*,?' +\n '\\\\s*(' +\n reNum +\n '+)\\\\s*,?' +\n '\\\\s*(' +\n reNum +\n '+)\\\\s*' +\n '$'\n);\n","//@ts-nocheck\n\nimport { cache } from '../cache';\nimport { config } from '../config';\nimport { fabric } from '../../HEADER';\nimport { halfPI, PiBy180 } from '../constants';\nimport { commaWsp, rePathCommand } from '../parser/constants';\nimport { Point } from '../point.class';\nimport { cos } from './misc/cos';\nimport { sin } from './misc/sin';\nimport { multiplyTransformMatrices, transformPoint } from './misc/matrix';\n\nconst commandLengths = {\n m: 2,\n l: 2,\n h: 1,\n v: 1,\n c: 6,\n s: 4,\n q: 4,\n t: 2,\n a: 7,\n};\nconst repeatedCommands = {\n m: 'l',\n M: 'L',\n};\n\nconst segmentToBezier = (\n th2,\n th3,\n cosTh,\n sinTh,\n rx,\n ry,\n cx1,\n cy1,\n mT,\n fromX,\n fromY\n) => {\n const costh2 = cos(th2),\n sinth2 = sin(th2),\n costh3 = cos(th3),\n sinth3 = sin(th3),\n toX = cosTh * rx * costh3 - sinTh * ry * sinth3 + cx1,\n toY = sinTh * rx * costh3 + cosTh * ry * sinth3 + cy1,\n cp1X = fromX + mT * (-cosTh * rx * sinth2 - sinTh * ry * costh2),\n cp1Y = fromY + mT * (-sinTh * rx * sinth2 + cosTh * ry * costh2),\n cp2X = toX + mT * (cosTh * rx * sinth3 + sinTh * ry * costh3),\n cp2Y = toY + mT * (sinTh * rx * sinth3 - cosTh * ry * costh3);\n\n return ['C', cp1X, cp1Y, cp2X, cp2Y, toX, toY];\n};\n\n/* Adapted from http://dxr.mozilla.org/mozilla-central/source/content/svg/content/src/nsSVGPathDataParser.cpp\n * by Andrea Bogazzi code is under MPL. if you don't have a copy of the license you can take it here\n * http://mozilla.org/MPL/2.0/\n */\nconst arcToSegments = (toX, toY, rx, ry, large, sweep, rotateX) => {\n let fromX = 0,\n fromY = 0,\n root = 0;\n const PI = Math.PI,\n th = rotateX * PiBy180,\n sinTh = sin(th),\n cosTh = cos(th),\n px = 0.5 * (-cosTh * toX - sinTh * toY),\n py = 0.5 * (-cosTh * toY + sinTh * toX),\n rx2 = rx ** 2,\n ry2 = ry ** 2,\n py2 = py ** 2,\n px2 = px ** 2,\n pl = rx2 * ry2 - rx2 * py2 - ry2 * px2;\n let _rx = Math.abs(rx);\n let _ry = Math.abs(ry);\n\n if (pl < 0) {\n const s = Math.sqrt(1 - pl / (rx2 * ry2));\n _rx *= s;\n _ry *= s;\n } else {\n root =\n (large === sweep ? -1.0 : 1.0) * Math.sqrt(pl / (rx2 * py2 + ry2 * px2));\n }\n\n const cx = (root * _rx * py) / _ry,\n cy = (-root * _ry * px) / _rx,\n cx1 = cosTh * cx - sinTh * cy + toX * 0.5,\n cy1 = sinTh * cx + cosTh * cy + toY * 0.5;\n let mTheta = calcVectorAngle(1, 0, (px - cx) / _rx, (py - cy) / _ry);\n let dtheta = calcVectorAngle(\n (px - cx) / _rx,\n (py - cy) / _ry,\n (-px - cx) / _rx,\n (-py - cy) / _ry\n );\n\n if (sweep === 0 && dtheta > 0) {\n dtheta -= 2 * PI;\n } else if (sweep === 1 && dtheta < 0) {\n dtheta += 2 * PI;\n }\n\n // Convert into cubic bezier segments <= 90deg\n const segments = Math.ceil(Math.abs((dtheta / PI) * 2)),\n result = new Array(segments),\n mDelta = dtheta / segments,\n mT =\n ((8 / 3) * Math.sin(mDelta / 4) * Math.sin(mDelta / 4)) /\n Math.sin(mDelta / 2);\n let th3 = mTheta + mDelta;\n\n for (let i = 0; i < segments; i++) {\n result[i] = segmentToBezier(\n mTheta,\n th3,\n cosTh,\n sinTh,\n _rx,\n _ry,\n cx1,\n cy1,\n mT,\n fromX,\n fromY\n );\n fromX = result[i][5];\n fromY = result[i][6];\n mTheta = th3;\n th3 += mDelta;\n }\n return result;\n};\n\n/*\n * Private\n */\nconst calcVectorAngle = (ux, uy, vx, vy) => {\n const ta = Math.atan2(uy, ux),\n tb = Math.atan2(vy, vx);\n if (tb >= ta) {\n return tb - ta;\n } else {\n return 2 * Math.PI - (ta - tb);\n }\n};\n\n// functions for the Cubic beizer\n// taken from: https://github.com/konvajs/konva/blob/7.0.5/src/shapes/Path.ts#L350\nconst CB1 = (t) => t ** 3;\nconst CB2 = (t) => 3 * t ** 2 * (1 - t);\nconst CB3 = (t) => 3 * t * (1 - t) ** 2;\nconst CB4 = (t) => (1 - t) ** 3;\n\n/**\n * Calculate bounding box of a beziercurve\n * @param {Number} x0 starting point\n * @param {Number} y0\n * @param {Number} x1 first control point\n * @param {Number} y1\n * @param {Number} x2 secondo control point\n * @param {Number} y2\n * @param {Number} x3 end of bezier\n * @param {Number} y3\n */\n// taken from http://jsbin.com/ivomiq/56/edit no credits available for that.\n// TODO: can we normalize this with the starting points set at 0 and then translated the bbox?\nexport function getBoundsOfCurve(x0, y0, x1, y1, x2, y2, x3, y3) {\n let argsString;\n if (config.cachesBoundsOfCurve) {\n // eslint-disable-next-line\n argsString = [...arguments].join();\n if (cache.boundsOfCurveCache[argsString]) {\n return cache.boundsOfCurveCache[argsString];\n }\n }\n\n const sqrt = Math.sqrt,\n abs = Math.abs,\n tvalues = [],\n bounds = [[], []];\n\n let b = 6 * x0 - 12 * x1 + 6 * x2;\n let a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3;\n let c = 3 * x1 - 3 * x0;\n\n for (let i = 0; i < 2; ++i) {\n if (i > 0) {\n b = 6 * y0 - 12 * y1 + 6 * y2;\n a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3;\n c = 3 * y1 - 3 * y0;\n }\n\n if (abs(a) < 1e-12) {\n if (abs(b) < 1e-12) {\n continue;\n }\n const t = -c / b;\n if (0 < t && t < 1) {\n tvalues.push(t);\n }\n continue;\n }\n const b2ac = b * b - 4 * c * a;\n if (b2ac < 0) {\n continue;\n }\n const sqrtb2ac = sqrt(b2ac);\n const t1 = (-b + sqrtb2ac) / (2 * a);\n if (0 < t1 && t1 < 1) {\n tvalues.push(t1);\n }\n const t2 = (-b - sqrtb2ac) / (2 * a);\n if (0 < t2 && t2 < 1) {\n tvalues.push(t2);\n }\n }\n\n let j = tvalues.length;\n const jlen = j;\n const iterator = getPointOnCubicBezierIterator(\n x0,\n y0,\n x1,\n y1,\n x2,\n y2,\n x3,\n y3\n );\n while (j--) {\n const { x, y } = iterator(tvalues[j]);\n bounds[0][j] = x;\n bounds[1][j] = y;\n }\n\n bounds[0][jlen] = x0;\n bounds[1][jlen] = y0;\n bounds[0][jlen + 1] = x3;\n bounds[1][jlen + 1] = y3;\n const result = [\n {\n x: Math.min(...bounds[0]),\n y: Math.min(...bounds[1]),\n },\n {\n x: Math.max(...bounds[0]),\n y: Math.max(...bounds[1]),\n },\n ];\n if (config.cachesBoundsOfCurve) {\n cache.boundsOfCurveCache[argsString] = result;\n }\n return result;\n}\n\n/**\n * Converts arc to a bunch of bezier curves\n * @param {Number} fx starting point x\n * @param {Number} fy starting point y\n * @param {Array} coords Arc command\n */\nexport const fromArcToBeziers = (\n fx,\n fy,\n [_, rx, ry, rot, large, sweep, tx, ty] = []\n) => {\n const segsNorm = arcToSegments(tx - fx, ty - fy, rx, ry, large, sweep, rot);\n\n for (let i = 0, len = segsNorm.length; i < len; i++) {\n segsNorm[i][1] += fx;\n segsNorm[i][2] += fy;\n segsNorm[i][3] += fx;\n segsNorm[i][4] += fy;\n segsNorm[i][5] += fx;\n segsNorm[i][6] += fy;\n }\n return segsNorm;\n};\n\n/**\n * This function take a parsed SVG path and make it simpler for fabricJS logic.\n * simplification consist of: only UPPERCASE absolute commands ( relative converted to absolute )\n * S converted in C, T converted in Q, A converted in C.\n * @param {Array} path the array of commands of a parsed svg path for fabric.Path\n * @return {Array} the simplified array of commands of a parsed svg path for fabric.Path\n */\nexport const makePathSimpler = (path) => {\n // x and y represent the last point of the path. the previous command point.\n // we add them to each relative command to make it an absolute comment.\n // we also swap the v V h H with L, because are easier to transform.\n let x = 0,\n y = 0;\n const len = path.length;\n // x1 and y1 represent the last point of the subpath. the subpath is started with\n // m or M command. When a z or Z command is drawn, x and y need to be resetted to\n // the last x1 and y1.\n let x1 = 0,\n y1 = 0;\n // previous will host the letter of the previous command, to handle S and T.\n // controlX and controlY will host the previous reflected control point\n let destinationPath = [],\n previous,\n controlX,\n controlY;\n for (let i = 0; i < len; ++i) {\n let converted = false;\n const current = path[i].slice(0);\n switch (\n current[0] // first letter\n ) {\n case 'l': // lineto, relative\n current[0] = 'L';\n current[1] += x;\n current[2] += y;\n // falls through\n case 'L':\n x = current[1];\n y = current[2];\n break;\n case 'h': // horizontal lineto, relative\n current[1] += x;\n // falls through\n case 'H':\n current[0] = 'L';\n current[2] = y;\n x = current[1];\n break;\n case 'v': // vertical lineto, relative\n current[1] += y;\n // falls through\n case 'V':\n current[0] = 'L';\n y = current[1];\n current[1] = x;\n current[2] = y;\n break;\n case 'm': // moveTo, relative\n current[0] = 'M';\n current[1] += x;\n current[2] += y;\n // falls through\n case 'M':\n x = current[1];\n y = current[2];\n x1 = current[1];\n y1 = current[2];\n break;\n case 'c': // bezierCurveTo, relative\n current[0] = 'C';\n current[1] += x;\n current[2] += y;\n current[3] += x;\n current[4] += y;\n current[5] += x;\n current[6] += y;\n // falls through\n case 'C':\n controlX = current[3];\n controlY = current[4];\n x = current[5];\n y = current[6];\n break;\n case 's': // shorthand cubic bezierCurveTo, relative\n current[0] = 'S';\n current[1] += x;\n current[2] += y;\n current[3] += x;\n current[4] += y;\n // falls through\n case 'S':\n // would be sScC but since we are swapping sSc for C, we check just that.\n if (previous === 'C') {\n // calculate reflection of previous control points\n controlX = 2 * x - controlX;\n controlY = 2 * y - controlY;\n } else {\n // If there is no previous command or if the previous command was not a C, c, S, or s,\n // the control point is coincident with the current point\n controlX = x;\n controlY = y;\n }\n x = current[3];\n y = current[4];\n current[0] = 'C';\n current[5] = current[3];\n current[6] = current[4];\n current[3] = current[1];\n current[4] = current[2];\n current[1] = controlX;\n current[2] = controlY;\n // current[3] and current[4] are NOW the second control point.\n // we keep it for the next reflection.\n controlX = current[3];\n controlY = current[4];\n break;\n case 'q': // quadraticCurveTo, relative\n current[0] = 'Q';\n current[1] += x;\n current[2] += y;\n current[3] += x;\n current[4] += y;\n // falls through\n case 'Q':\n controlX = current[1];\n controlY = current[2];\n x = current[3];\n y = current[4];\n break;\n case 't': // shorthand quadraticCurveTo, relative\n current[0] = 'T';\n current[1] += x;\n current[2] += y;\n // falls through\n case 'T':\n if (previous === 'Q') {\n // calculate reflection of previous control point\n controlX = 2 * x - controlX;\n controlY = 2 * y - controlY;\n } else {\n // If there is no previous command or if the previous command was not a Q, q, T or t,\n // assume the control point is coincident with the current point\n controlX = x;\n controlY = y;\n }\n current[0] = 'Q';\n x = current[1];\n y = current[2];\n current[1] = controlX;\n current[2] = controlY;\n current[3] = x;\n current[4] = y;\n break;\n case 'a':\n current[0] = 'A';\n current[6] += x;\n current[7] += y;\n // falls through\n case 'A':\n converted = true;\n destinationPath = destinationPath.concat(\n fromArcToBeziers(x, y, current)\n );\n x = current[6];\n y = current[7];\n break;\n case 'z':\n case 'Z':\n x = x1;\n y = y1;\n break;\n default:\n }\n if (!converted) {\n destinationPath.push(current);\n }\n previous = current[0];\n }\n return destinationPath;\n};\n\n// todo verify if we can just use the point class here\n/**\n * Calc length from point x1,y1 to x2,y2\n * @param {Number} x1 starting point x\n * @param {Number} y1 starting point y\n * @param {Number} x2 starting point x\n * @param {Number} y2 starting point y\n * @return {Number} length of segment\n */\nconst calcLineLength = (x1, y1, x2, y2) =>\n Math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2);\n\nconst getPointOnCubicBezierIterator =\n (p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) => (pct) => {\n const c1 = CB1(pct),\n c2 = CB2(pct),\n c3 = CB3(pct),\n c4 = CB4(pct);\n return {\n x: p4x * c1 + p3x * c2 + p2x * c3 + p1x * c4,\n y: p4y * c1 + p3y * c2 + p2y * c3 + p1y * c4,\n };\n };\n\nconst QB1 = (t) => t ** 2;\nconst QB2 = (t) => 2 * t * (1 - t);\nconst QB3 = (t) => (1 - t) ** 2;\n\nconst getTangentCubicIterator =\n (p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) => (pct) => {\n const qb1 = QB1(pct),\n qb2 = QB2(pct),\n qb3 = QB3(pct),\n tangentX =\n 3 * (qb3 * (p2x - p1x) + qb2 * (p3x - p2x) + qb1 * (p4x - p3x)),\n tangentY =\n 3 * (qb3 * (p2y - p1y) + qb2 * (p3y - p2y) + qb1 * (p4y - p3y));\n return Math.atan2(tangentY, tangentX);\n };\n\nconst getPointOnQuadraticBezierIterator =\n (p1x, p1y, p2x, p2y, p3x, p3y) => (pct) => {\n const c1 = QB1(pct),\n c2 = QB2(pct),\n c3 = QB3(pct);\n return {\n x: p3x * c1 + p2x * c2 + p1x * c3,\n y: p3y * c1 + p2y * c2 + p1y * c3,\n };\n };\n\nconst getTangentQuadraticIterator = (p1x, p1y, p2x, p2y, p3x, p3y) => (pct) => {\n const invT = 1 - pct,\n tangentX = 2 * (invT * (p2x - p1x) + pct * (p3x - p2x)),\n tangentY = 2 * (invT * (p2y - p1y) + pct * (p3y - p2y));\n return Math.atan2(tangentY, tangentX);\n};\n\n// this will run over a path segment ( a cubic or quadratic segment) and approximate it\n// with 100 segemnts. This will good enough to calculate the length of the curve\nconst pathIterator = (iterator, x1, y1) => {\n let tempP = { x: x1, y: y1 },\n tmpLen = 0;\n for (let perc = 1; perc <= 100; perc += 1) {\n const p = iterator(perc / 100);\n tmpLen += calcLineLength(tempP.x, tempP.y, p.x, p.y);\n tempP = p;\n }\n return tmpLen;\n};\n\n/**\n * Given a pathInfo, and a distance in pixels, find the percentage from 0 to 1\n * that correspond to that pixels run over the path.\n * The percentage will be then used to find the correct point on the canvas for the path.\n * @param {Array} segInfo fabricJS collection of information on a parsed path\n * @param {Number} distance from starting point, in pixels.\n * @return {Object} info object with x and y ( the point on canvas ) and angle, the tangent on that point;\n */\nconst findPercentageForDistance = (segInfo, distance) => {\n let perc = 0,\n tmpLen = 0,\n tempP = { x: segInfo.x, y: segInfo.y },\n p,\n nextLen,\n nextStep = 0.01,\n lastPerc;\n // nextStep > 0.0001 covers 0.00015625 that 1/64th of 1/100\n // the path\n const iterator = segInfo.iterator,\n angleFinder = segInfo.angleFinder;\n while (tmpLen < distance && nextStep > 0.0001) {\n p = iterator(perc);\n lastPerc = perc;\n nextLen = calcLineLength(tempP.x, tempP.y, p.x, p.y);\n // compare tmpLen each cycle with distance, decide next perc to test.\n if (nextLen + tmpLen > distance) {\n // we discard this step and we make smaller steps.\n perc -= nextStep;\n nextStep /= 2;\n } else {\n tempP = p;\n perc += nextStep;\n tmpLen += nextLen;\n }\n }\n p.angle = angleFinder(lastPerc);\n return p;\n};\n\n/**\n * Run over a parsed and simplifed path and extract some informations.\n * informations are length of each command and starting point\n * @param {Array} path fabricJS parsed path commands\n * @return {Array} path commands informations\n */\nexport const getPathSegmentsInfo = (path) => {\n let totalLength = 0,\n current,\n //x2 and y2 are the coords of segment start\n //x1 and y1 are the coords of the current point\n x1 = 0,\n y1 = 0,\n x2 = 0,\n y2 = 0,\n iterator,\n tempInfo,\n angleFinder;\n const len = path.length,\n info = [];\n for (let i = 0; i < len; i++) {\n current = path[i];\n tempInfo = {\n x: x1,\n y: y1,\n command: current[0],\n };\n switch (\n current[0] //first letter\n ) {\n case 'M':\n tempInfo.length = 0;\n x2 = x1 = current[1];\n y2 = y1 = current[2];\n break;\n case 'L':\n tempInfo.length = calcLineLength(x1, y1, current[1], current[2]);\n x1 = current[1];\n y1 = current[2];\n break;\n case 'C':\n iterator = getPointOnCubicBezierIterator(\n x1,\n y1,\n current[1],\n current[2],\n current[3],\n current[4],\n current[5],\n current[6]\n );\n angleFinder = getTangentCubicIterator(\n x1,\n y1,\n current[1],\n current[2],\n current[3],\n current[4],\n current[5],\n current[6]\n );\n tempInfo.iterator = iterator;\n tempInfo.angleFinder = angleFinder;\n tempInfo.length = pathIterator(iterator, x1, y1);\n x1 = current[5];\n y1 = current[6];\n break;\n case 'Q':\n iterator = getPointOnQuadraticBezierIterator(\n x1,\n y1,\n current[1],\n current[2],\n current[3],\n current[4]\n );\n angleFinder = getTangentQuadraticIterator(\n x1,\n y1,\n current[1],\n current[2],\n current[3],\n current[4]\n );\n tempInfo.iterator = iterator;\n tempInfo.angleFinder = angleFinder;\n tempInfo.length = pathIterator(iterator, x1, y1);\n x1 = current[3];\n y1 = current[4];\n break;\n case 'Z':\n case 'z':\n // we add those in order to ease calculations later\n tempInfo.destX = x2;\n tempInfo.destY = y2;\n tempInfo.length = calcLineLength(x1, y1, x2, y2);\n x1 = x2;\n y1 = y2;\n break;\n }\n totalLength += tempInfo.length;\n info.push(tempInfo);\n }\n info.push({ length: totalLength, x: x1, y: y1 });\n return info;\n};\n\nexport const getPointOnPath = (path, distance, infos) => {\n if (!infos) {\n infos = getPathSegmentsInfo(path);\n }\n let i = 0;\n while (distance - infos[i].length > 0 && i < infos.length - 2) {\n distance -= infos[i].length;\n i++;\n }\n // var distance = infos[infos.length - 1] * perc;\n const segInfo = infos[i],\n segPercent = distance / segInfo.length,\n command = segInfo.command,\n segment = path[i];\n let info;\n\n switch (command) {\n case 'M':\n return { x: segInfo.x, y: segInfo.y, angle: 0 };\n case 'Z':\n case 'z':\n info = new Point(segInfo.x, segInfo.y).lerp(\n new Point(segInfo.destX, segInfo.destY),\n segPercent\n );\n info.angle = Math.atan2(\n segInfo.destY - segInfo.y,\n segInfo.destX - segInfo.x\n );\n return info;\n case 'L':\n info = new Point(segInfo.x, segInfo.y).lerp(\n new Point(segment[1], segment[2]),\n segPercent\n );\n info.angle = Math.atan2(segment[2] - segInfo.y, segment[1] - segInfo.x);\n return info;\n case 'C':\n return findPercentageForDistance(segInfo, distance);\n case 'Q':\n return findPercentageForDistance(segInfo, distance);\n }\n};\n\n/**\n *\n * @param {string} pathString\n * @return {(string|number)[][]} An array of SVG path commands\n * @example Usage\n * parsePath('M 3 4 Q 3 5 2 1 4 0 Q 9 12 2 1 4 0') === [\n * ['M', 3, 4],\n * ['Q', 3, 5, 2, 1, 4, 0],\n * ['Q', 9, 12, 2, 1, 4, 0],\n * ];\n *\n */\nexport const parsePath = (pathString) => {\n // one of commands (m,M,l,L,q,Q,c,C,etc.) followed by non-command characters (i.e. command values)\n const re = rePathCommand,\n rNumber = '[-+]?(?:\\\\d*\\\\.\\\\d+|\\\\d+\\\\.?)(?:[eE][-+]?\\\\d+)?\\\\s*',\n rNumberCommaWsp = `(${rNumber})${commaWsp}`,\n rFlagCommaWsp = `([01])${commaWsp}?`,\n rArcSeq = `${rNumberCommaWsp}?${rNumberCommaWsp}?${rNumberCommaWsp}${rFlagCommaWsp}${rFlagCommaWsp}${rNumberCommaWsp}?(${rNumber})`,\n regArcArgumentSequence = new RegExp(rArcSeq, 'g'),\n result = [];\n\n if (!pathString || !pathString.match) {\n return result;\n }\n const path = pathString.match(/[mzlhvcsqta][^mzlhvcsqta]*/gi);\n\n for (let i = 0, len = path.length; i < len; i++) {\n const currentPath = path[i];\n const coordsStr = currentPath.slice(1).trim();\n const coords = [];\n let command = currentPath.charAt(0);\n const coordsParsed = [command];\n\n if (command.toLowerCase() === 'a') {\n // arcs have special flags that apparently don't require spaces so handle special\n for (let args; (args = regArcArgumentSequence.exec(coordsStr)); ) {\n for (let j = 1; j < args.length; j++) {\n coords.push(args[j]);\n }\n }\n } else {\n let match;\n while ((match = re.exec(coordsStr))) {\n coords.push(match[0]);\n }\n }\n\n for (let j = 0, jlen = coords.length; j < jlen; j++) {\n const parsed = parseFloat(coords[j]);\n if (!isNaN(parsed)) {\n coordsParsed.push(parsed);\n }\n }\n\n const commandLength = commandLengths[command.toLowerCase()],\n repeatedCommand = repeatedCommands[command] || command;\n\n if (coordsParsed.length - 1 > commandLength) {\n for (\n let k = 1, klen = coordsParsed.length;\n k < klen;\n k += commandLength\n ) {\n result.push([command].concat(coordsParsed.slice(k, k + commandLength)));\n command = repeatedCommand;\n }\n } else {\n result.push(coordsParsed);\n }\n }\n return result;\n};\n\n/**\n *\n * Converts points to a smooth SVG path\n * @param {{ x: number,y: number }[]} points Array of points\n * @param {number} [correction] Apply a correction to the path (usually we use `width / 1000`). If value is undefined 0 is used as the correction value.\n * @return {(string|number)[][]} An array of SVG path commands\n */\nexport const getSmoothPathFromPoints = (points, correction = 0) => {\n let p1 = new Point(points[0]),\n p2 = new Point(points[1]),\n multSignX = 1,\n multSignY = 0;\n const path = [],\n len = points.length,\n manyPoints = len > 2;\n\n if (manyPoints) {\n multSignX = points[2].x < p2.x ? -1 : points[2].x === p2.x ? 0 : 1;\n multSignY = points[2].y < p2.y ? -1 : points[2].y === p2.y ? 0 : 1;\n }\n path.push([\n 'M',\n p1.x - multSignX * correction,\n p1.y - multSignY * correction,\n ]);\n let i;\n for (i = 1; i < len; i++) {\n if (!p1.eq(p2)) {\n const midPoint = p1.midPointFrom(p2);\n // p1 is our bezier control point\n // midpoint is our endpoint\n // start point is p(i-1) value.\n path.push(['Q', p1.x, p1.y, midPoint.x, midPoint.y]);\n }\n p1 = points[i];\n if (i + 1 < points.length) {\n p2 = points[i + 1];\n }\n }\n if (manyPoints) {\n multSignX = p1.x > points[i - 2].x ? 1 : p1.x === points[i - 2].x ? 0 : -1;\n multSignY = p1.y > points[i - 2].y ? 1 : p1.y === points[i - 2].y ? 0 : -1;\n }\n path.push([\n 'L',\n p1.x + multSignX * correction,\n p1.y + multSignY * correction,\n ]);\n return path;\n};\n\n/**\n * Transform a path by transforming each segment.\n * it has to be a simplified path or it won't work.\n * WARNING: this depends from pathOffset for correct operation\n * @param {Array} path fabricJS parsed and simplified path commands\n * @param {Array} transform matrix that represent the transformation\n * @param {Object} [pathOffset] the fabric.Path pathOffset\n * @param {Number} pathOffset.x\n * @param {Number} pathOffset.y\n * @returns {Array} the transformed path\n */\nexport const transformPath = (path, transform, pathOffset) => {\n if (pathOffset) {\n transform = multiplyTransformMatrices(transform, [\n 1,\n 0,\n 0,\n 1,\n -pathOffset.x,\n -pathOffset.y,\n ]);\n }\n return path.map((pathSegment) => {\n const newSegment = pathSegment.slice(0);\n for (let i = 1; i < pathSegment.length - 1; i += 2) {\n const { x, y } = transformPoint(\n {\n x: pathSegment[i],\n y: pathSegment[i + 1],\n },\n transform\n );\n newSegment[i] = x;\n newSegment[i + 1] = y;\n }\n return newSegment;\n });\n};\n\n/**\n * Returns an array of path commands to create a regular polygon\n * @param {number} radius\n * @param {number} numVertexes\n * @returns {(string|number)[][]} An array of SVG path commands\n */\nexport const getRegularPolygonPath = (numVertexes, radius) => {\n const interiorAngle = (Math.PI * 2) / numVertexes;\n // rotationAdjustment rotates the path by 1/2 the interior angle so that the polygon always has a flat side on the bottom\n // This isn't strictly necessary, but it's how we tend to think of and expect polygons to be drawn\n let rotationAdjustment = -halfPI;\n if (numVertexes % 2 === 0) {\n rotationAdjustment += interiorAngle / 2;\n }\n const d = new Array(numVertexes + 1);\n for (let i = 0; i < numVertexes; i++) {\n const rad = i * interiorAngle + rotationAdjustment;\n const { x, y } = new Point(cos(rad), sin(rad)).scalarMultiply(radius);\n d[i] = [i === 0 ? 'M' : 'L', x, y];\n }\n d[numVertexes] = ['Z'];\n return d;\n};\n\n/**\n * Join path commands to go back to svg format\n * @param {Array} pathData fabricJS parsed path commands\n * @return {String} joined path 'M 0 0 L 20 30'\n */\nexport const joinPath = (pathData) =>\n pathData.map((segment) => segment.join(' ')).join(' ');\n","//@ts-nocheck\n// TODO this file needs to go away, cross browser style support is not fabricjs domain.\n\n/**\n * wrapper for setting element's style\n * @memberOf fabric.util\n * @param {HTMLElement} element\n * @param {Object | string} styles\n */\nexport function setStyle(element, styles) {\n const elementStyle = element.style;\n if (!elementStyle) {\n return;\n } else if (typeof styles === 'string') {\n element.style.cssText += ';' + styles;\n } else {\n Object.entries(styles).forEach(([property, value]) =>\n elementStyle.setProperty(property, value)\n );\n }\n}\n","//@ts-nocheck\nimport { noop } from '../constants';\n\n/**\n * Cross-browser abstraction for sending XMLHttpRequest\n * @memberOf fabric.util\n * @deprecated this has to go away, we can use a modern browser method to do the same.\n * @param {String} url URL to send XMLHttpRequest to\n * @param {Object} [options] Options object\n * @param {String} [options.method=\"GET\"]\n * @param {Record} [options.parameters] parameters to append to url in GET or in body\n * @param {String} [options.body] body to send with POST or PUT request\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @param {Function} options.onComplete Callback to invoke when request is completed\n * @return {XMLHttpRequest} request\n */\nexport function request(url, options = {}) {\n const method = options.method ? options.method.toUpperCase() : 'GET',\n onComplete = options.onComplete || noop,\n xhr = new fabric.window.XMLHttpRequest(),\n body = options.body || options.parameters,\n signal = options.signal,\n abort = function () {\n xhr.abort();\n },\n removeListener = function () {\n signal && signal.removeEventListener('abort', abort);\n xhr.onerror = xhr.ontimeout = noop;\n };\n\n if (signal && signal.aborted) {\n throw new Error('`options.signal` is in `aborted` state');\n } else if (signal) {\n signal.addEventListener('abort', abort, { once: true });\n }\n\n /** @ignore */\n xhr.onreadystatechange = function () {\n if (xhr.readyState === 4) {\n removeListener();\n onComplete(xhr);\n xhr.onreadystatechange = noop;\n }\n };\n\n xhr.onerror = xhr.ontimeout = removeListener;\n\n if (method === 'GET' && options.parameters) {\n const { origin, pathname, searchParams } = new URL(url);\n url = `${origin}${pathname}?${new URLSearchParams([\n ...Array.from(searchParams.entries()),\n ...Object.entries(options.parameters),\n ])}`;\n }\n\n xhr.open(method, url, true);\n\n if (method === 'POST' || method === 'PUT') {\n xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');\n }\n\n xhr.send(method === 'GET' ? null : body);\n return xhr;\n}\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\nconst touchEvents = ['touchstart', 'touchmove', 'touchend'];\n\n/**\n * Adds an event listener to an element\n * @function\n * @deprecated\n * @memberOf fabric.util\n * @param {HTMLElement} element\n * @param {String} eventName\n * @param {Function} handler\n */\nexport const addListener = (element, eventName, handler, options) =>\n element && element.addEventListener(eventName, handler, options);\n\n/**\n * Removes an event listener from an element\n * @function\n * @deprecated\n * @memberOf fabric.util\n * @param {HTMLElement} element\n * @param {String} eventName\n * @param {Function} handler\n */\nexport const removeListener = (element, eventName, handler, options) =>\n element && element.removeEventListener(eventName, handler, options);\n\nfunction getTouchInfo(event) {\n const touchProp = event.changedTouches;\n if (touchProp && touchProp[0]) {\n return touchProp[0];\n }\n return event;\n}\n\nexport const getPointer = (event) => {\n const element = event.target,\n scroll = fabric.util.getScrollLeftTop(element),\n _evt = getTouchInfo(event);\n return new Point(_evt.clientX + scroll.left, _evt.clientY + scroll.top);\n};\n\nexport const isTouchEvent = (event) =>\n touchEvents.indexOf(event.type) > -1 || event.pointerType === 'touch';\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\n\n/**\n * Wraps element with another element\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to wrap\n * @param {HTMLElement|String} wrapper Element to wrap with\n * @param {Object} [attributes] Attributes to set on a wrapper\n * @return {HTMLElement} wrapper\n */\nexport function wrapElement(element, wrapper) {\n if (element.parentNode) {\n element.parentNode.replaceChild(wrapper, element);\n }\n wrapper.appendChild(element);\n return wrapper;\n}\n\n/**\n * Returns element scroll offsets\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to operate on\n * @return {Object} Object with left/top values\n */\nexport function getScrollLeftTop(element) {\n let left = 0,\n top = 0;\n\n const docElement = fabric.document.documentElement,\n body = fabric.document.body || {\n scrollLeft: 0,\n scrollTop: 0,\n };\n // While loop checks (and then sets element to) .parentNode OR .host\n // to account for ShadowDOM. We still want to traverse up out of ShadowDOM,\n // but the .parentNode of a root ShadowDOM node will always be null, instead\n // it should be accessed through .host. See http://stackoverflow.com/a/24765528/4383938\n while (element && (element.parentNode || element.host)) {\n // Set element to element parent, or 'host' in case of ShadowDOM\n element = element.parentNode || element.host;\n\n if (element === fabric.document) {\n left = body.scrollLeft || docElement.scrollLeft || 0;\n top = body.scrollTop || docElement.scrollTop || 0;\n } else {\n left += element.scrollLeft || 0;\n top += element.scrollTop || 0;\n }\n\n if (element.nodeType === 1 && element.style.position === 'fixed') {\n break;\n }\n }\n\n return { left, top };\n}\n\n/**\n * Returns offset for a given element\n * @function\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to get offset for\n * @return {Object} Object with \"left\" and \"top\" properties\n */\nexport function getElementOffset(element) {\n let box = { left: 0, top: 0 };\n const doc = element && element.ownerDocument,\n offset = { left: 0, top: 0 },\n offsetAttributes = {\n borderLeftWidth: 'left',\n borderTopWidth: 'top',\n paddingLeft: 'left',\n paddingTop: 'top',\n };\n\n if (!doc) {\n return offset;\n }\n const elemStyle = fabric.document.defaultView.getComputedStyle(element, null);\n for (const attr in offsetAttributes) {\n offset[offsetAttributes[attr]] += parseInt(elemStyle[attr], 10) || 0;\n }\n\n const docElem = doc.documentElement;\n if (typeof element.getBoundingClientRect !== 'undefined') {\n box = element.getBoundingClientRect();\n }\n\n const scrollLeftTop = getScrollLeftTop(element);\n\n return {\n left:\n box.left + scrollLeftTop.left - (docElem.clientLeft || 0) + offset.left,\n top: box.top + scrollLeftTop.top - (docElem.clientTop || 0) + offset.top,\n };\n}\n\n/**\n * Makes element unselectable\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to make unselectable\n * @return {HTMLElement} Element that was passed in\n */\nexport function makeElementUnselectable(element) {\n if (typeof element.onselectstart !== 'undefined') {\n element.onselectstart = () => false;\n }\n element.style.userSelect = 'none';\n return element;\n}\n\n/**\n * Makes element selectable\n * @memberOf fabric.util\n * @param {HTMLElement} element Element to make selectable\n * @return {HTMLElement} Element that was passed in\n */\nexport function makeElementSelectable(element) {\n if (typeof element.onselectstart !== 'undefined') {\n element.onselectstart = null;\n }\n element.style.userSelect = '';\n return element;\n}\n\nexport function getNodeCanvas(element) {\n const impl = fabric.jsdomImplForWrapper(element);\n return impl._canvas || impl._image;\n}\n\nexport function cleanUpJsdomNode(element) {\n if (!fabric.isLikelyNode) {\n return;\n }\n const impl = fabric.jsdomImplForWrapper(element);\n if (impl) {\n impl._image = null;\n impl._canvas = null;\n // unsure if necessary\n impl._currentSrc = null;\n impl._attributes = null;\n impl._classList = null;\n }\n}\n","/**\n * Returns true if context has transparent pixel\n * at specified location (taking tolerance into account)\n * @param {CanvasRenderingContext2D} ctx context\n * @param {Number} x x coordinate in canvasElementCoordinate, not fabric space\n * @param {Number} y y coordinate in canvasElementCoordinate, not fabric space\n * @param {Number} tolerance Tolerance pixels around the point, not alpha tolerance\n * @return {boolean} true if transparent\n */\nexport const isTransparent = (\n ctx: CanvasRenderingContext2D,\n x: number,\n y: number,\n tolerance: number\n): boolean => {\n // If tolerance is > 0 adjust start coords to take into account.\n // If moves off Canvas fix to 0\n if (tolerance > 0) {\n if (x > tolerance) {\n x -= tolerance;\n } else {\n x = 0;\n }\n if (y > tolerance) {\n y -= tolerance;\n } else {\n y = 0;\n }\n }\n\n let _isTransparent = true;\n const { data } = ctx.getImageData(\n x,\n y,\n tolerance * 2 || 1,\n tolerance * 2 || 1\n );\n const l = data.length;\n\n // Split image data - for tolerance > 1, pixelDataSize = 4;\n for (let i = 3; i < l; i += 4) {\n const alphaChannel = data[i];\n if (alphaChannel > 0) {\n // Stop if colour found\n _isTransparent = false;\n break;\n }\n }\n\n return _isTransparent;\n};\n","import { fabric } from '../../../HEADER';\nimport { TObject } from '../../__types__';\nimport { sendObjectToPlane } from './planeChange';\n\n/**\n * Merges 2 clip paths into one visually equal clip path\n *\n * **IMPORTANT**:\\\n * Does **NOT** clone the arguments, clone them proir if necessary.\n *\n * Creates a wrapper (group) that contains one clip path and is clipped by the other so content is kept where both overlap.\n * Use this method if both the clip paths may have nested clip paths of their own, so assigning one to the other's clip path property is not possible.\n *\n * In order to handle the `inverted` property we follow logic described in the following cases:\\\n * **(1)** both clip paths are inverted - the clip paths pass the inverted prop to the wrapper and loose it themselves.\\\n * **(2)** one is inverted and the other isn't - the wrapper shouldn't become inverted and the inverted clip path must clip the non inverted one to produce an identical visual effect.\\\n * **(3)** both clip paths are not inverted - wrapper and clip paths remain unchanged.\n *\n * @memberOf fabric.util\n * @param {fabric.Object} c1\n * @param {fabric.Object} c2\n * @returns {fabric.Object} merged clip path\n */\nexport const mergeClipPaths = (c1: TObject, c2: TObject) => {\n let a = c1,\n b = c2;\n if (a.inverted && !b.inverted) {\n // case (2)\n a = c2;\n b = c1;\n }\n // `b` becomes `a`'s clip path so we transform `b` to `a` coordinate plane\n sendObjectToPlane(b, b.group?.calcTransformMatrix(), a.calcTransformMatrix());\n // assign the `inverted` prop to the wrapping group\n const inverted = a.inverted && b.inverted;\n if (inverted) {\n // case (1)\n a.inverted = b.inverted = false;\n }\n return new fabric.Group([a], { clipPath: b, inverted });\n};\n","import { twoMathPi, halfPI } from '../constants';\n\ntype TEasingFunction = (\n currentTime: number,\n startValue: number,\n byValue: number,\n duration: number\n) => number;\n\n/**\n * Easing functions\n * See Easing Equations by Robert Penner\n * @namespace fabric.util.ease\n */\n\nconst normalize = (a: number, c: number, p: number, s: number) => {\n if (a < Math.abs(c)) {\n a = c;\n s = p / 4;\n } else {\n //handle the 0/0 case:\n if (c === 0 && a === 0) {\n s = (p / twoMathPi) * Math.asin(1);\n } else {\n s = (p / twoMathPi) * Math.asin(c / a);\n }\n }\n return { a, c, p, s };\n};\n\nconst elastic = (\n a: number,\n s: number,\n p: number,\n t: number,\n d: number\n): number =>\n a * Math.pow(2, 10 * (t -= 1)) * Math.sin(((t * d - s) * twoMathPi) / p);\n\n/**\n * Cubic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutCubic: TEasingFunction = (t, b, c, d) =>\n c * ((t /= d - 1) * t ** 2 + 1) + b;\n\n/**\n * Cubic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutCubic: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * t ** 3 + b;\n }\n return (c / 2) * ((t -= 2) * t ** 2 + 2) + b;\n};\n\n/**\n * Quartic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInQuart: TEasingFunction = (t, b, c, d) =>\n c * (t /= d) * t ** 3 + b;\n\n/**\n * Quartic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutQuart: TEasingFunction = (t, b, c, d) =>\n -c * ((t = t / d - 1) * t ** 3 - 1) + b;\n\n/**\n * Quartic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutQuart: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * t ** 4 + b;\n }\n return (-c / 2) * ((t -= 2) * t ** 3 - 2) + b;\n};\n\n/**\n * Quintic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInQuint: TEasingFunction = (t, b, c, d) =>\n c * (t /= d) * t ** 4 + b;\n\n/**\n * Quintic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutQuint: TEasingFunction = (t, b, c, d) =>\n c * ((t /= d - 1) * t ** 4 + 1) + b;\n\n/**\n * Quintic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutQuint: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * t ** 5 + b;\n }\n return (c / 2) * ((t -= 2) * t ** 4 + 2) + b;\n};\n\n/**\n * Sinusoidal easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInSine: TEasingFunction = (t, b, c, d) =>\n -c * Math.cos((t / d) * halfPI) + c + b;\n\n/**\n * Sinusoidal easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutSine: TEasingFunction = (t, b, c, d) =>\n c * Math.sin((t / d) * halfPI) + b;\n\n/**\n * Sinusoidal easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutSine: TEasingFunction = (t, b, c, d) =>\n (-c / 2) * (Math.cos((Math.PI * t) / d) - 1) + b;\n\n/**\n * Exponential easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInExpo: TEasingFunction = (t, b, c, d) =>\n t === 0 ? b : c * 2 ** (10 * (t / d - 1)) + b;\n\n/**\n * Exponential easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutExpo: TEasingFunction = (t, b, c, d) =>\n t === d ? b + c : c * -(2 ** ((-10 * t) / d) + 1) + b;\n\n/**\n * Exponential easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutExpo: TEasingFunction = (t, b, c, d) => {\n if (t === 0) {\n return b;\n }\n if (t === d) {\n return b + c;\n }\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * 2 ** (10 * (t - 1)) + b;\n }\n return (c / 2) * -(2 ** (-10 * --t) + 2) + b;\n};\n\n/**\n * Circular easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInCirc: TEasingFunction = (t, b, c, d) =>\n -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;\n\n/**\n * Circular easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutCirc: TEasingFunction = (t, b, c, d) =>\n c * Math.sqrt(1 - (t = t / d - 1) * t) + b;\n\n/**\n * Circular easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutCirc: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (-c / 2) * (Math.sqrt(1 - t ** 2) - 1) + b;\n }\n return (c / 2) * (Math.sqrt(1 - (t -= 2) * t) + 1) + b;\n};\n\n/**\n * Elastic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInElastic: TEasingFunction = (t, b, c, d) => {\n const s = 1.70158,\n a = c;\n let p = 0;\n if (t === 0) {\n return b;\n }\n t /= d;\n if (t === 1) {\n return b + c;\n }\n if (!p) {\n p = d * 0.3;\n }\n const { a: normA, s: normS, p: normP } = normalize(a, c, p, s);\n return -elastic(normA, normS, normP, t, d) + b;\n};\n\n/**\n * Elastic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutElastic: TEasingFunction = (t, b, c, d) => {\n const s = 1.70158,\n a = c;\n let p = 0;\n if (t === 0) {\n return b;\n }\n t /= d;\n if (t === 1) {\n return b + c;\n }\n if (!p) {\n p = d * 0.3;\n }\n const { a: normA, s: normS, p: normP, c: normC } = normalize(a, c, p, s);\n return (\n normA * 2 ** (-10 * t) * Math.sin(((t * d - normS) * twoMathPi) / normP) +\n normC +\n b\n );\n};\n\n/**\n * Elastic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutElastic: TEasingFunction = (t, b, c, d) => {\n const s = 1.70158,\n a = c;\n let p = 0;\n if (t === 0) {\n return b;\n }\n t /= d / 2;\n if (t === 2) {\n return b + c;\n }\n if (!p) {\n p = d * (0.3 * 1.5);\n }\n const { a: normA, s: normS, p: normP, c: normC } = normalize(a, c, p, s);\n if (t < 1) {\n return -0.5 * elastic(normA, normS, normP, t, d) + b;\n }\n return (\n normA *\n Math.pow(2, -10 * (t -= 1)) *\n Math.sin(((t * d - normS) * twoMathPi) / normP) *\n 0.5 +\n normC +\n b\n );\n};\n\n/**\n * Backwards easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInBack: TEasingFunction = (t, b, c, d, s = 1.70158) =>\n c * (t /= d) * t * ((s + 1) * t - s) + b;\n\n/**\n * Backwards easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutBack: TEasingFunction = (t, b, c, d, s = 1.70158) =>\n c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b;\n\n/**\n * Backwards easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutBack: TEasingFunction = (t, b, c, d, s = 1.70158) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * (t * t * (((s *= 1.525) + 1) * t - s)) + b;\n }\n return (c / 2) * ((t -= 2) * t * (((s *= 1.525) + 1) * t + s) + 2) + b;\n};\n\n/**\n * Bouncing easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutBounce: TEasingFunction = (t, b, c, d) => {\n if ((t /= d) < 1 / 2.75) {\n return c * (7.5625 * t * t) + b;\n } else if (t < 2 / 2.75) {\n return c * (7.5625 * (t -= 1.5 / 2.75) * t + 0.75) + b;\n } else if (t < 2.5 / 2.75) {\n return c * (7.5625 * (t -= 2.25 / 2.75) * t + 0.9375) + b;\n } else {\n return c * (7.5625 * (t -= 2.625 / 2.75) * t + 0.984375) + b;\n }\n};\n\n/**\n * Bouncing easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInBounce: TEasingFunction = (t, b, c, d) =>\n c - easeOutBounce(d - t, 0, c, d) + b;\n\n/**\n * Bouncing easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutBounce: TEasingFunction = (t, b, c, d) =>\n t < d / 2\n ? easeInBounce(t * 2, 0, c, d) * 0.5 + b\n : easeOutBounce(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b;\n\n/**\n * Quadratic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInQuad: TEasingFunction = (t, b, c, d) => c * (t /= d) * t + b;\n\n/**\n * Quadratic easing out\n * @memberOf fabric.util.ease\n */\nexport const easeOutQuad: TEasingFunction = (t, b, c, d) =>\n -c * (t /= d) * (t - 2) + b;\n\n/**\n * Quadratic easing in and out\n * @memberOf fabric.util.ease\n */\nexport const easeInOutQuad: TEasingFunction = (t, b, c, d) => {\n t /= d / 2;\n if (t < 1) {\n return (c / 2) * t ** 2 + b;\n }\n return (-c / 2) * (--t * (t - 2) - 1) + b;\n};\n\n/**\n * Cubic easing in\n * @memberOf fabric.util.ease\n */\nexport const easeInCubic: TEasingFunction = (t, b, c, d) =>\n c * (t /= d) * t * t + b;\n","/**\n * Map of the 148 color names with HEX code\n * @see: https://www.w3.org/TR/css3-color/#svg-color\n */\nexport const ColorNameMap = {\n aliceblue: '#F0F8FF',\n antiquewhite: '#FAEBD7',\n aqua: '#00FFFF',\n aquamarine: '#7FFFD4',\n azure: '#F0FFFF',\n beige: '#F5F5DC',\n bisque: '#FFE4C4',\n black: '#000000',\n blanchedalmond: '#FFEBCD',\n blue: '#0000FF',\n blueviolet: '#8A2BE2',\n brown: '#A52A2A',\n burlywood: '#DEB887',\n cadetblue: '#5F9EA0',\n chartreuse: '#7FFF00',\n chocolate: '#D2691E',\n coral: '#FF7F50',\n cornflowerblue: '#6495ED',\n cornsilk: '#FFF8DC',\n crimson: '#DC143C',\n cyan: '#00FFFF',\n darkblue: '#00008B',\n darkcyan: '#008B8B',\n darkgoldenrod: '#B8860B',\n darkgray: '#A9A9A9',\n darkgrey: '#A9A9A9',\n darkgreen: '#006400',\n darkkhaki: '#BDB76B',\n darkmagenta: '#8B008B',\n darkolivegreen: '#556B2F',\n darkorange: '#FF8C00',\n darkorchid: '#9932CC',\n darkred: '#8B0000',\n darksalmon: '#E9967A',\n darkseagreen: '#8FBC8F',\n darkslateblue: '#483D8B',\n darkslategray: '#2F4F4F',\n darkslategrey: '#2F4F4F',\n darkturquoise: '#00CED1',\n darkviolet: '#9400D3',\n deeppink: '#FF1493',\n deepskyblue: '#00BFFF',\n dimgray: '#696969',\n dimgrey: '#696969',\n dodgerblue: '#1E90FF',\n firebrick: '#B22222',\n floralwhite: '#FFFAF0',\n forestgreen: '#228B22',\n fuchsia: '#FF00FF',\n gainsboro: '#DCDCDC',\n ghostwhite: '#F8F8FF',\n gold: '#FFD700',\n goldenrod: '#DAA520',\n gray: '#808080',\n grey: '#808080',\n green: '#008000',\n greenyellow: '#ADFF2F',\n honeydew: '#F0FFF0',\n hotpink: '#FF69B4',\n indianred: '#CD5C5C',\n indigo: '#4B0082',\n ivory: '#FFFFF0',\n khaki: '#F0E68C',\n lavender: '#E6E6FA',\n lavenderblush: '#FFF0F5',\n lawngreen: '#7CFC00',\n lemonchiffon: '#FFFACD',\n lightblue: '#ADD8E6',\n lightcoral: '#F08080',\n lightcyan: '#E0FFFF',\n lightgoldenrodyellow: '#FAFAD2',\n lightgray: '#D3D3D3',\n lightgrey: '#D3D3D3',\n lightgreen: '#90EE90',\n lightpink: '#FFB6C1',\n lightsalmon: '#FFA07A',\n lightseagreen: '#20B2AA',\n lightskyblue: '#87CEFA',\n lightslategray: '#778899',\n lightslategrey: '#778899',\n lightsteelblue: '#B0C4DE',\n lightyellow: '#FFFFE0',\n lime: '#00FF00',\n limegreen: '#32CD32',\n linen: '#FAF0E6',\n magenta: '#FF00FF',\n maroon: '#800000',\n mediumaquamarine: '#66CDAA',\n mediumblue: '#0000CD',\n mediumorchid: '#BA55D3',\n mediumpurple: '#9370DB',\n mediumseagreen: '#3CB371',\n mediumslateblue: '#7B68EE',\n mediumspringgreen: '#00FA9A',\n mediumturquoise: '#48D1CC',\n mediumvioletred: '#C71585',\n midnightblue: '#191970',\n mintcream: '#F5FFFA',\n mistyrose: '#FFE4E1',\n moccasin: '#FFE4B5',\n navajowhite: '#FFDEAD',\n navy: '#000080',\n oldlace: '#FDF5E6',\n olive: '#808000',\n olivedrab: '#6B8E23',\n orange: '#FFA500',\n orangered: '#FF4500',\n orchid: '#DA70D6',\n palegoldenrod: '#EEE8AA',\n palegreen: '#98FB98',\n paleturquoise: '#AFEEEE',\n palevioletred: '#DB7093',\n papayawhip: '#FFEFD5',\n peachpuff: '#FFDAB9',\n peru: '#CD853F',\n pink: '#FFC0CB',\n plum: '#DDA0DD',\n powderblue: '#B0E0E6',\n purple: '#800080',\n rebeccapurple: '#663399',\n red: '#FF0000',\n rosybrown: '#BC8F8F',\n royalblue: '#4169E1',\n saddlebrown: '#8B4513',\n salmon: '#FA8072',\n sandybrown: '#F4A460',\n seagreen: '#2E8B57',\n seashell: '#FFF5EE',\n sienna: '#A0522D',\n silver: '#C0C0C0',\n skyblue: '#87CEEB',\n slateblue: '#6A5ACD',\n slategray: '#708090',\n slategrey: '#708090',\n snow: '#FFFAFA',\n springgreen: '#00FF7F',\n steelblue: '#4682B4',\n tan: '#D2B48C',\n teal: '#008080',\n thistle: '#D8BFD8',\n tomato: '#FF6347',\n turquoise: '#40E0D0',\n violet: '#EE82EE',\n wheat: '#F5DEB3',\n white: '#FFFFFF',\n whitesmoke: '#F5F5F5',\n yellow: '#FFFF00',\n yellowgreen: '#9ACD32',\n};\n","/**\n * Regex matching color in RGB or RGBA formats (ex: rgb(0, 0, 0), rgba(255, 100, 10, 0.5), rgba( 255 , 100 , 10 , 0.5 ), rgb(1,1,1), rgba(100%, 60%, 10%, 0.5))\n * @static\n * @field\n * @memberOf Color\n */\n// eslint-disable-next-line max-len\nexport const reRGBa =\n /^rgba?\\(\\s*(\\d{1,3}(?:\\.\\d+)?%?)\\s*,\\s*(\\d{1,3}(?:\\.\\d+)?%?)\\s*,\\s*(\\d{1,3}(?:\\.\\d+)?%?)\\s*(?:\\s*,\\s*((?:\\d*\\.?\\d+)?)\\s*)?\\)$/i;\n\n/**\n * Regex matching color in HSL or HSLA formats (ex: hsl(200, 80%, 10%), hsla(300, 50%, 80%, 0.5), hsla( 300 , 50% , 80% , 0.5 ))\n * @static\n * @field\n * @memberOf Color\n */\nexport const reHSLa =\n /^hsla?\\(\\s*(\\d{1,3})\\s*,\\s*(\\d{1,3}%)\\s*,\\s*(\\d{1,3}%)\\s*(?:\\s*,\\s*(\\d+(?:\\.\\d+)?)\\s*)?\\)$/i;\n\n/**\n * Regex matching color in HEX format (ex: #FF5544CC, #FF5555, 010155, aff)\n * @static\n * @field\n * @memberOf Color\n */\nexport const reHex = /^#?([0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{4}|[0-9a-f]{3})$/i;\n","/**\n * @private\n * @param {Number} p\n * @param {Number} q\n * @param {Number} t\n * @return {Number}\n */\nexport function hue2rgb(p: number, q: number, t: number): number {\n if (t < 0) {\n t += 1;\n }\n if (t > 1) {\n t -= 1;\n }\n if (t < 1 / 6) {\n return p + (q - p) * 6 * t;\n }\n if (t < 1 / 2) {\n return q;\n }\n if (t < 2 / 3) {\n return p + (q - p) * (2 / 3 - t) * 6;\n }\n return p;\n}\n\n/**\n * Convert a [0, 255] value to hex\n * @param value\n * @returns\n */\nexport function hexify(value: number) {\n const hexValue = value.toString(16).toUpperCase();\n return hexValue.length === 1 ? `0${hexValue}` : hexValue;\n}\n","//@ts-nocheck\nimport { ColorNameMap } from './color_map';\nimport { reHSLa, reHex, reRGBa } from './constants';\nimport { hue2rgb, hexify } from './util';\n\ntype TColorSource = [number, number, number];\n\ntype TColorAlphaSource = [number, number, number, number];\n\n/**\n * @class Color common color operations\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#colors colors}\n */\nexport class Color {\n private _source: TColorAlphaSource;\n\n /**\n *\n * @param {string} [color] optional in hex or rgb(a) or hsl format or from known color list\n */\n constructor(color?: string) {\n if (!color) {\n this.setSource([0, 0, 0, 1]);\n } else {\n this._tryParsingColor(color);\n }\n }\n\n /**\n * @private\n * @param {string} [color] Color value to parse\n */\n _tryParsingColor(color?: string) {\n if (color in ColorNameMap) {\n color = ColorNameMap[color];\n }\n\n const source =\n color === 'transparent'\n ? [255, 255, 255, 0]\n : Color.sourceFromHex(color) ||\n Color.sourceFromRgb(color) ||\n Color.sourceFromHsl(color) || [0, 0, 0, 1]; // color is not recognize let's default to black as canvas does\n\n if (source) {\n this.setSource(source);\n }\n }\n\n /**\n * Adapted from {@link https://gist.github.com/mjackson/5311256 https://gist.github.com/mjackson}\n * @private\n * @param {Number} r Red color value\n * @param {Number} g Green color value\n * @param {Number} b Blue color value\n * @return {TColorSource} Hsl color\n */\n _rgbToHsl(r: number, g: number, b: number): TColorSource {\n r /= 255;\n g /= 255;\n b /= 255;\n const maxValue = Math.max(r, g, b),\n minValue = Math.min(r, g, b);\n\n let h, s;\n const l = (maxValue + minValue) / 2;\n\n if (maxValue === minValue) {\n h = s = 0; // achromatic\n } else {\n const d = maxValue - minValue;\n s = l > 0.5 ? d / (2 - maxValue - minValue) : d / (maxValue + minValue);\n switch (maxValue) {\n case r:\n h = (g - b) / d + (g < b ? 6 : 0);\n break;\n case g:\n h = (b - r) / d + 2;\n break;\n case b:\n h = (r - g) / d + 4;\n break;\n }\n h /= 6;\n }\n\n return [Math.round(h * 360), Math.round(s * 100), Math.round(l * 100)];\n }\n\n /**\n * Returns source of this color (where source is an array representation; ex: [200, 200, 100, 1])\n * @return {TColorAlphaSource}\n */\n getSource() {\n return this._source;\n }\n\n /**\n * Sets source of this color (where source is an array representation; ex: [200, 200, 100, 1])\n * @param {TColorAlphaSource} source\n */\n setSource(source: TColorAlphaSource) {\n this._source = source;\n }\n\n /**\n * Returns color representation in RGB format\n * @return {String} ex: rgb(0-255,0-255,0-255)\n */\n toRgb() {\n const source = this.getSource();\n return `rgb(${source[0]},${source[1]},${source[2]})`;\n }\n\n /**\n * Returns color representation in RGBA format\n * @return {String} ex: rgba(0-255,0-255,0-255,0-1)\n */\n toRgba() {\n const source = this.getSource();\n return `rgba(${source[0]},${source[1]},${source[2]},${source[3]})`;\n }\n\n /**\n * Returns color representation in HSL format\n * @return {String} ex: hsl(0-360,0%-100%,0%-100%)\n */\n toHsl() {\n const source = this.getSource(),\n hsl = this._rgbToHsl(source[0], source[1], source[2]);\n\n return `hsl(${hsl[0]},${hsl[1]}%,${hsl[2]}%)`;\n }\n\n /**\n * Returns color representation in HSLA format\n * @return {String} ex: hsla(0-360,0%-100%,0%-100%,0-1)\n */\n toHsla() {\n const source = this.getSource(),\n hsl = this._rgbToHsl(source[0], source[1], source[2]);\n\n return `hsla(${hsl[0]},${hsl[1]}%,${hsl[2]}%,${source[3]})`;\n }\n\n /**\n * Returns color representation in HEX format\n * @return {String} ex: FF5555\n */\n toHex() {\n const [r, g, b] = this.getSource();\n return `${hexify(r)}${hexify(g)}${hexify(b)}`;\n }\n\n /**\n * Returns color representation in HEXA format\n * @return {String} ex: FF5555CC\n */\n toHexa() {\n const source = this.getSource();\n return `${this.toHex()}${hexify(Math.round(source[3] * 255))}`;\n }\n\n /**\n * Gets value of alpha channel for this color\n * @return {Number} 0-1\n */\n getAlpha() {\n return this.getSource()[3];\n }\n\n /**\n * Sets value of alpha channel for this color\n * @param {Number} alpha Alpha value 0-1\n * @return {Color} thisArg\n */\n setAlpha(alpha: number) {\n const source = this.getSource();\n source[3] = alpha;\n this.setSource(source);\n return this;\n }\n\n /**\n * Transforms color to its grayscale representation\n * @return {Color} thisArg\n */\n toGrayscale() {\n const source = this.getSource(),\n average = parseInt(\n (source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0),\n 10\n ),\n currentAlpha = source[3];\n this.setSource([average, average, average, currentAlpha]);\n return this;\n }\n\n /**\n * Transforms color to its black and white representation\n * @param {Number} threshold\n * @return {Color} thisArg\n */\n toBlackWhite(threshold: number) {\n const source = this.getSource(),\n currentAlpha = source[3];\n let average = Math.round(\n source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11\n );\n\n average = average < (threshold || 127) ? 0 : 255;\n this.setSource([average, average, average, currentAlpha]);\n return this;\n }\n\n /**\n * Overlays color with another color\n * @param {String|Color} otherColor\n * @return {Color} thisArg\n */\n overlayWith(otherColor: string | Color) {\n if (!(otherColor instanceof Color)) {\n otherColor = new Color(otherColor);\n }\n\n const result = [],\n alpha = this.getAlpha(),\n otherAlpha = 0.5,\n source = this.getSource(),\n otherSource = otherColor.getSource();\n\n for (let i = 0; i < 3; i++) {\n result.push(\n Math.round(source[i] * (1 - otherAlpha) + otherSource[i] * otherAlpha)\n );\n }\n\n result[3] = alpha;\n this.setSource(result);\n return this;\n }\n\n /**\n * Returns new color object, when given a color in RGB format\n * @memberOf Color\n * @param {String} color Color value ex: rgb(0-255,0-255,0-255)\n * @return {Color}\n */\n static fromRgb(color: string): Color {\n return Color.fromRgba(color);\n }\n\n /**\n * Returns new color object, when given a color in RGBA format\n * @static\n * @function\n * @memberOf Color\n * @param {String} color\n * @return {Color}\n */\n static fromRgba(color: string): Color {\n return Color.fromSource(Color.sourceFromRgb(color));\n }\n\n /**\n * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in RGB or RGBA format\n * @memberOf Color\n * @param {String} color Color value ex: rgb(0-255,0-255,0-255), rgb(0%-100%,0%-100%,0%-100%)\n * @return {TColorAlphaSource | undefined} source\n */\n static sourceFromRgb(color: string): TColorAlphaSource | undefined {\n const match = color.match(reRGBa);\n if (match) {\n const r =\n (parseInt(match[1], 10) / (/%$/.test(match[1]) ? 100 : 1)) *\n (/%$/.test(match[1]) ? 255 : 1),\n g =\n (parseInt(match[2], 10) / (/%$/.test(match[2]) ? 100 : 1)) *\n (/%$/.test(match[2]) ? 255 : 1),\n b =\n (parseInt(match[3], 10) / (/%$/.test(match[3]) ? 100 : 1)) *\n (/%$/.test(match[3]) ? 255 : 1);\n\n return [\n parseInt(r, 10),\n parseInt(g, 10),\n parseInt(b, 10),\n match[4] ? parseFloat(match[4]) : 1,\n ];\n }\n }\n\n /**\n * Returns new color object, when given a color in HSL format\n * @param {String} color Color value ex: hsl(0-260,0%-100%,0%-100%)\n * @memberOf Color\n * @return {Color}\n */\n static fromHsl(color: string): Color {\n return Color.fromHsla(color);\n }\n\n /**\n * Returns new color object, when given a color in HSLA format\n * @static\n * @function\n * @memberOf Color\n * @param {String} color\n * @return {Color}\n */\n static fromHsla(color: string): Color {\n return Color.fromSource(Color.sourceFromHsl(color));\n }\n\n /**\n * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HSL or HSLA format.\n * Adapted from https://github.com/mjijackson\n * @memberOf Color\n * @param {String} color Color value ex: hsl(0-360,0%-100%,0%-100%) or hsla(0-360,0%-100%,0%-100%, 0-1)\n * @return {TColorAlphaSource | undefined} source\n * @see http://http://www.w3.org/TR/css3-color/#hsl-color\n */\n static sourceFromHsl(color: string): TColorAlphaSource | undefined {\n const match = color.match(reHSLa);\n if (!match) {\n return;\n }\n\n const h = (((parseFloat(match[1]) % 360) + 360) % 360) / 360,\n s = parseFloat(match[2]) / (/%$/.test(match[2]) ? 100 : 1),\n l = parseFloat(match[3]) / (/%$/.test(match[3]) ? 100 : 1);\n let r, g, b;\n\n if (s === 0) {\n r = g = b = l;\n } else {\n const q = l <= 0.5 ? l * (s + 1) : l + s - l * s,\n p = l * 2 - q;\n\n r = hue2rgb(p, q, h + 1 / 3);\n g = hue2rgb(p, q, h);\n b = hue2rgb(p, q, h - 1 / 3);\n }\n\n return [\n Math.round(r * 255),\n Math.round(g * 255),\n Math.round(b * 255),\n match[4] ? parseFloat(match[4]) : 1,\n ];\n }\n\n /**\n * Returns new color object, when given a color in HEX format\n * @static\n * @memberOf Color\n * @param {String} color Color value ex: FF5555\n * @return {Color}\n */\n static fromHex(color: string): Color {\n return Color.fromSource(Color.sourceFromHex(color));\n }\n\n /**\n * Returns array representation (ex: [100, 100, 200, 1]) of a color that's in HEX format\n * @static\n * @memberOf Color\n * @param {String} color ex: FF5555 or FF5544CC (RGBa)\n * @return {TColorAlphaSource | undefined} source\n */\n static sourceFromHex(color: string): TColorAlphaSource | undefined {\n if (color.match(reHex)) {\n const value = color.slice(color.indexOf('#') + 1),\n isShortNotation = value.length === 3 || value.length === 4,\n isRGBa = value.length === 8 || value.length === 4,\n r = isShortNotation\n ? value.charAt(0) + value.charAt(0)\n : value.substring(0, 2),\n g = isShortNotation\n ? value.charAt(1) + value.charAt(1)\n : value.substring(2, 4),\n b = isShortNotation\n ? value.charAt(2) + value.charAt(2)\n : value.substring(4, 6),\n a = isRGBa\n ? isShortNotation\n ? value.charAt(3) + value.charAt(3)\n : value.substring(6, 8)\n : 'FF';\n\n return [\n parseInt(r, 16),\n parseInt(g, 16),\n parseInt(b, 16),\n parseFloat((parseInt(a, 16) / 255).toFixed(2)),\n ];\n }\n }\n\n /**\n * Returns new color object, when given color in array representation (ex: [200, 100, 100, 0.5])\n * @static\n * @memberOf Color\n * @param {TColorSource | TColorAlphaSource} source\n * @return {Color}\n */\n static fromSource(source: TColorSource | TColorAlphaSource): Color {\n const oColor = new Color();\n oColor.setSource(source);\n return oColor;\n }\n}\n","import { fabric } from '../../HEADER';\nimport { Color } from './color.class';\nexport { Color };\nfabric.Color = Color;\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\n\n/**\n * Array holding all running animations\n * @memberof fabric\n * @type {AnimationContext[]}\n */\nclass RunningAnimations extends Array {\n /**\n * cancel all running animations at the next requestAnimFrame\n * @returns {AnimationContext[]}\n */\n cancelAll(): any[] {\n const animations = this.splice(0);\n animations.forEach((animation) => animation.cancel());\n return animations;\n }\n\n /**\n * cancel all running animations attached to canvas at the next requestAnimFrame\n * @param {fabric.Canvas} canvas\n * @returns {AnimationContext[]}\n */\n cancelByCanvas(canvas: any) {\n if (!canvas) {\n return [];\n }\n const cancelled = this.filter(\n (animation) =>\n typeof animation.target === 'object' &&\n animation.target.canvas === canvas\n );\n cancelled.forEach((animation) => animation.cancel());\n return cancelled;\n }\n\n /**\n * cancel all running animations for target at the next requestAnimFrame\n * @param {*} target\n * @returns {AnimationContext[]}\n */\n cancelByTarget(target) {\n const cancelled = this.findAnimationsByTarget(target);\n cancelled.forEach((animation) => animation.cancel());\n return cancelled;\n }\n\n /**\n *\n * @param {CancelFunction} cancelFunc the function returned by animate\n * @returns {number}\n */\n findAnimationIndex(cancelFunc) {\n return this.indexOf(this.findAnimation(cancelFunc));\n }\n\n /**\n *\n * @param {CancelFunction} cancelFunc the function returned by animate\n * @returns {AnimationContext | undefined} animation's options object\n */\n findAnimation(cancelFunc) {\n return this.find((animation) => animation.cancel === cancelFunc);\n }\n\n /**\n *\n * @param {*} target the object that is assigned to the target property of the animation context\n * @returns {AnimationContext[]} array of animation options object associated with target\n */\n findAnimationsByTarget(target) {\n if (!target) {\n return [];\n }\n return this.filter((animation) => animation.target === target);\n }\n}\n\nexport const runningAnimations = new RunningAnimations();\n\nfabric.runningAnimations = runningAnimations;\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { runningAnimations } from './animation_registry';\nimport { noop } from '../constants';\n\n/**\n *\n * @typedef {Object} AnimationOptions\n * Animation of a value or list of values.\n * @property {Function} [onChange] Callback; invoked on every value change\n * @property {Function} [onComplete] Callback; invoked when value change is completed\n * @property {number | number[]} [startValue=0] Starting value\n * @property {number | number[]} [endValue=100] Ending value\n * @property {number | number[]} [byValue=100] Value to modify the property by\n * @property {Function} [easing] Easing function\n * @property {number} [duration=500] Duration of change (in ms)\n * @property {Function} [abort] Additional function with logic. If returns true, animation aborts.\n * @property {number} [delay] Delay of animation start (in ms)\n *\n * @typedef {() => void} CancelFunction\n *\n * @typedef {Object} AnimationCurrentState\n * @property {number | number[]} currentValue value in range [`startValue`, `endValue`]\n * @property {number} completionRate value in range [0, 1]\n * @property {number} durationRate value in range [0, 1]\n *\n * @typedef {(AnimationOptions & AnimationCurrentState & { cancel: CancelFunction }} AnimationContext\n */\n\nconst defaultEasing = (t, b, c, d) =>\n -c * Math.cos((t / d) * (Math.PI / 2)) + c + b;\n\n/**\n * Changes value from one to another within certain period of time, invoking callbacks as value is being changed.\n * @memberOf fabric.util\n * @param {AnimationOptions} [options] Animation options\n * When using lists, think of something like this:\n * @example\n * fabric.util.animate({\n * startValue: [1, 2, 3],\n * endValue: [2, 4, 6],\n * onChange: function([x, y, zoom]) {\n * canvas.zoomToPoint(new Point(x, y), zoom);\n * canvas.requestRenderAll();\n * }\n * });\n *\n * @example\n * fabric.util.animate({\n * startValue: 1,\n * endValue: 0,\n * onChange: function(v) {\n * obj.set('opacity', v);\n * canvas.requestRenderAll();\n * }\n * });\n *\n * @returns {CancelFunction} cancel function\n */\nexport function animate(options = {}) {\n let cancel = false;\n\n const {\n startValue = 0,\n duration = 500,\n easing = defaultEasing,\n onChange = noop,\n abort = noop,\n onComplete = noop,\n endValue = 100,\n delay = 0,\n } = options;\n\n const context = {\n ...options,\n currentValue: startValue,\n completionRate: 0,\n durationRate: 0,\n };\n\n const removeFromRegistry = () => {\n const index = runningAnimations.indexOf(context);\n return index > -1 && runningAnimations.splice(index, 1)[0];\n };\n\n context.cancel = function () {\n cancel = true;\n return removeFromRegistry();\n };\n runningAnimations.push(context);\n\n const runner = function (timestamp) {\n const start = timestamp || +new Date(),\n finish = start + duration,\n isMany = Array.isArray(startValue),\n byValue =\n options.byValue ||\n (isMany\n ? startValue.map((value, i) => endValue[i] - value)\n : endValue - startValue);\n\n options.onStart && options.onStart();\n\n (function tick(ticktime) {\n const time = ticktime || +new Date();\n const currentTime = time > finish ? duration : time - start,\n timePerc = currentTime / duration,\n current = isMany\n ? startValue.map((_value, i) =>\n easing(currentTime, _value, byValue[i], duration)\n )\n : easing(currentTime, startValue, byValue, duration),\n valuePerc = isMany\n ? Math.abs((current[0] - startValue[0]) / byValue[0])\n : Math.abs((current - startValue) / byValue);\n // update context\n context.currentValue = isMany ? current.slice() : current;\n context.completionRate = valuePerc;\n context.durationRate = timePerc;\n\n if (cancel) {\n return;\n }\n if (abort(current, valuePerc, timePerc)) {\n removeFromRegistry();\n return;\n }\n if (time > finish) {\n // update context\n context.currentValue = isMany ? endValue.slice() : endValue;\n context.completionRate = 1;\n context.durationRate = 1;\n // execute callbacks\n onChange(isMany ? endValue.slice() : endValue, 1, 1);\n onComplete(endValue, 1, 1);\n removeFromRegistry();\n return;\n } else {\n onChange(current, valuePerc, timePerc);\n requestAnimFrame(tick);\n }\n })(start);\n };\n\n if (delay > 0) {\n setTimeout(() => requestAnimFrame(runner), delay);\n } else {\n requestAnimFrame(runner);\n }\n\n return context.cancel;\n}\n\nconst _requestAnimFrame =\n fabric.window.requestAnimationFrame ||\n function (callback) {\n return fabric.window.setTimeout(callback, 1000 / 60);\n };\n\nconst _cancelAnimFrame =\n fabric.window.cancelAnimationFrame || fabric.window.clearTimeout;\n\n/**\n * requestAnimationFrame polyfill based on http://paulirish.com/2011/requestanimationframe-for-smart-animating/\n * In order to get a precise start time, `requestAnimFrame` should be called as an entry into the method\n * @memberOf fabric.util\n * @param {Function} callback Callback to invoke\n * @param {DOMElement} element optional Element to associate with animation\n */\nexport function requestAnimFrame(...args) {\n return _requestAnimFrame.apply(fabric.window, args);\n}\n\nexport function cancelAnimFrame(...args) {\n return _cancelAnimFrame.apply(fabric.window, args);\n}\n","//@ts-nocheck\nimport { Color } from '../color';\nimport { animate } from './animate';\n\n// Calculate an in-between color. Returns a \"rgba()\" string.\n// Credit: Edwin Martin \n// http://www.bitstorm.org/jquery/color-animation/jquery.animate-colors.js\n// const calculateColor = (begin: number[], end: number[], pos) => {\n// const [r, g, b, _a] = begin.map((beg, index) => beg + pos * (end[index] - beg));\n// const a = begin && end ? parseFloat(_a) : 1;\n// return `rgba(${parseInt(r, 10)},${parseInt(g, 10)},${parseInt(b, 10)},${a})`;\n// }\n\n// color animation is broken. This function pass the tests for some reasons\n// but begin and end aren't array anymore since we improved animate function\n// to handler arrays internally.\nfunction calculateColor(begin, end, pos) {\n let color =\n 'rgba(' +\n parseInt(begin[0] + pos * (end[0] - begin[0]), 10) +\n ',' +\n parseInt(begin[1] + pos * (end[1] - begin[1]), 10) +\n ',' +\n parseInt(begin[2] + pos * (end[2] - begin[2]), 10);\n\n color +=\n ',' + (begin && end ? parseFloat(begin[3] + pos * (end[3] - begin[3])) : 1);\n color += ')';\n return color;\n}\n\nconst defaultColorEasing = (currentTime, duration) =>\n 1 - Math.cos((currentTime / duration) * (Math.PI / 2));\n\n/**\n * Changes the color from one to another within certain period of time, invoking callbacks as value is being changed.\n * @memberOf fabric.util\n * @param {String} fromColor The starting color in hex or rgb(a) format.\n * @param {String} toColor The starting color in hex or rgb(a) format.\n * @param {Number} [duration] Duration of change (in ms).\n * @param {Object} [options] Animation options\n * @param {Function} [options.onChange] Callback; invoked on every value change\n * @param {Function} [options.onComplete] Callback; invoked when value change is completed\n * @param {Function} [options.colorEasing] Easing function. Note that this function only take two arguments (currentTime, duration). Thus the regular animation easing functions cannot be used.\n * @param {Function} [options.abort] Additional function with logic. If returns true, onComplete is called.\n * @returns {Function} abort function\n */\nexport function animateColor(\n fromColor,\n toColor,\n duration = 500,\n {\n colorEasing = defaultColorEasing,\n onComplete,\n onChange,\n ...restOfOptions\n } = {}\n) {\n const startColor = new Color(fromColor).getSource(),\n endColor = new Color(toColor).getSource();\n return animate({\n ...restOfOptions,\n duration,\n startValue: startColor,\n endValue: endColor,\n byValue: endColor,\n easing: (currentTime, startValue, byValue, duration) =>\n calculateColor(startValue, byValue, colorEasing(currentTime, duration)),\n // has to take in account for color restoring;\n onComplete: (current, valuePerc, timePerc) =>\n onComplete?.(calculateColor(endColor, endColor, 0), valuePerc, timePerc),\n onChange: (current, valuePerc, timePerc) => {\n if (onChange) {\n if (Array.isArray(current)) {\n return onChange(\n calculateColor(current, current, 0),\n valuePerc,\n timePerc\n );\n }\n onChange(current, valuePerc, timePerc);\n }\n },\n });\n}\n","//@ts-nocheck\nimport { noop } from '../constants';\n\nfunction addMethods(klass, source, parent) {\n for (var property in source) {\n if (\n property in klass.prototype &&\n typeof klass.prototype[property] === 'function' &&\n (source[property] + '').indexOf('callSuper') > -1\n ) {\n klass.prototype[property] = (function (property) {\n return function (...args) {\n var superclass = this.constructor.superclass;\n this.constructor.superclass = parent;\n var returnValue = source[property].call(this, ...args);\n this.constructor.superclass = superclass;\n\n if (property !== 'initialize') {\n return returnValue;\n }\n };\n })(property);\n } else {\n klass.prototype[property] = source[property];\n }\n }\n}\n\nfunction Subclass() {}\n\nfunction callSuper(methodName, ...args) {\n var parentMethod = null,\n _this = this;\n\n // climb prototype chain to find method not equal to callee's method\n while (_this.constructor.superclass) {\n var superClassMethod = _this.constructor.superclass.prototype[methodName];\n if (_this[methodName] !== superClassMethod) {\n parentMethod = superClassMethod;\n break;\n }\n // eslint-disable-next-line\n _this = _this.constructor.superclass.prototype;\n }\n\n if (!parentMethod) {\n return console.log(\n 'tried to callSuper ' +\n methodName +\n ', method not found in prototype chain',\n this\n );\n }\n\n return parentMethod.call(this, ...args);\n}\n\n/**\n * Helper for creation of \"classes\".\n * @memberOf fabric.util\n * @param {Function} [parent] optional \"Class\" to inherit from\n * @param {Object} [properties] Properties shared by all instances of this class\n * (be careful modifying objects defined here as this would affect all instances)\n */\nexport function createClass(...args) {\n var parent = null,\n properties = [...args];\n\n if (typeof args[0] === 'function') {\n parent = properties.shift();\n }\n function klass(...klassArgs) {\n this.initialize.call(this, ...klassArgs);\n }\n\n klass.superclass = parent;\n klass.subclasses = [];\n\n if (parent) {\n Subclass.prototype = parent.prototype;\n klass.prototype = new Subclass();\n parent.subclasses.push(klass);\n }\n for (var i = 0, length = properties.length; i < length; i++) {\n addMethods(klass, properties[i], parent);\n }\n if (!klass.prototype.initialize) {\n klass.prototype.initialize = noop;\n }\n klass.prototype.constructor = klass;\n klass.prototype.callSuper = callSuper;\n return klass;\n}\n","//@ts-nocheck\nimport { fabric } from '../../../HEADER';\nimport { cos } from './cos';\nimport { sin } from './sin';\nimport {\n rotateVector,\n createVector,\n calcAngleBetweenVectors,\n getHatVector,\n getBisector,\n} from './vectors';\nimport { degreesToRadians, radiansToDegrees } from './radiansDegreesConversion';\nimport { rotatePoint } from './rotatePoint';\nimport { getRandomInt, removeFromArray } from '../internals';\nimport { projectStrokeOnPoints } from './projectStroke';\nimport {\n transformPoint,\n invertTransform,\n composeMatrix,\n qrDecompose,\n calcDimensionsMatrix,\n calcRotateMatrix,\n multiplyTransformMatrices,\n} from './matrix';\nimport { stylesFromArray, stylesToArray, hasStyleChanged } from './textStyles';\nimport { clone, extend } from '../lang_object';\nimport {\n createCanvasElement,\n createImage,\n copyCanvasElement,\n toDataURL,\n} from './dom';\nimport { toFixed } from './toFixed';\nimport {\n matrixToSVG,\n parsePreserveAspectRatioAttribute,\n groupSVGElements,\n parseUnit,\n getSvgAttributes,\n} from './svgParsing';\nimport { findScaleToFit, findScaleToCover } from './findScaleTo';\nimport { capValue } from './capValue';\nimport {\n saveObjectTransform,\n resetObjectTransform,\n addTransformToObject,\n applyTransformToObject,\n removeTransformFromObject,\n sizeAfterTransform,\n} from './objectTransforms';\nimport { makeBoundingBoxFromPoints } from './boundingBoxFromPoints';\nimport {\n calcPlaneChangeMatrix,\n sendPointToPlane,\n transformPointRelativeToCanvas,\n sendObjectToPlane,\n} from './planeChange';\nimport { camelize, capitalize, escapeXml, graphemeSplit } from '../lang_string';\nimport {\n getKlass,\n loadImage,\n enlivenObjects,\n enlivenObjectEnlivables,\n} from './objectEnlive';\nimport { pick } from './pick';\nimport {\n joinPath,\n parsePath,\n makePathSimpler,\n getSmoothPathFromPoints,\n getPathSegmentsInfo,\n getBoundsOfCurve,\n getPointOnPath,\n transformPath,\n getRegularPolygonPath,\n} from '../path';\nimport { setStyle } from '../dom_style';\nimport { request } from '../dom_request';\nimport {\n isTouchEvent,\n getPointer,\n removeListener,\n addListener,\n} from '../dom_event';\nimport {\n wrapElement,\n getScrollLeftTop,\n getElementOffset,\n getNodeCanvas,\n cleanUpJsdomNode,\n makeElementUnselectable,\n makeElementSelectable,\n} from '../dom_misc';\nimport { isTransparent } from './isTransparent';\nimport { mergeClipPaths } from './mergeClipPaths';\nimport * as ease from '../anim_ease';\nimport { animateColor } from '../animate_color';\nimport { animate, requestAnimFrame, cancelAnimFrame } from '../animate';\nimport { createClass } from '../lang_class';\n/**\n * @namespace fabric.util\n */\nfabric.util = {\n cos,\n sin,\n rotateVector,\n createVector,\n calcAngleBetweenVectors,\n getHatVector,\n getBisector,\n degreesToRadians,\n radiansToDegrees,\n rotatePoint,\n // probably we should stop exposing this from the interface\n getRandomInt,\n removeFromArray,\n projectStrokeOnPoints,\n // matrix.ts file\n transformPoint,\n invertTransform,\n composeMatrix,\n qrDecompose,\n calcDimensionsMatrix,\n calcRotateMatrix,\n multiplyTransformMatrices,\n // textStyles.ts file\n stylesFromArray,\n stylesToArray,\n hasStyleChanged,\n object: {\n clone,\n extend,\n },\n createCanvasElement,\n createImage,\n copyCanvasElement,\n toDataURL,\n toFixed,\n matrixToSVG,\n parsePreserveAspectRatioAttribute,\n groupSVGElements,\n parseUnit,\n getSvgAttributes,\n findScaleToFit,\n findScaleToCover,\n capValue,\n saveObjectTransform,\n resetObjectTransform,\n addTransformToObject,\n applyTransformToObject,\n removeTransformFromObject,\n makeBoundingBoxFromPoints,\n calcPlaneChangeMatrix,\n sendPointToPlane,\n transformPointRelativeToCanvas,\n sendObjectToPlane,\n string: {\n camelize,\n capitalize,\n escapeXml,\n graphemeSplit,\n },\n getKlass,\n loadImage,\n enlivenObjects,\n enlivenObjectEnlivables,\n pick,\n joinPath,\n parsePath,\n makePathSimpler,\n getSmoothPathFromPoints,\n getPathSegmentsInfo,\n getBoundsOfCurve,\n getPointOnPath,\n transformPath,\n getRegularPolygonPath,\n request,\n setStyle,\n isTouchEvent,\n getPointer,\n removeListener,\n addListener,\n wrapElement,\n getScrollLeftTop,\n getElementOffset,\n getNodeCanvas,\n cleanUpJsdomNode,\n makeElementUnselectable,\n makeElementSelectable,\n isTransparent,\n sizeAfterTransform,\n mergeClipPaths,\n ease,\n animateColor,\n animate,\n requestAnimFrame,\n cancelAnimFrame,\n createClass,\n};\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\nimport { capitalize } from '../util/lang_string';\nimport {\n invertTransform,\n multiplyTransformMatrices,\n qrDecompose,\n} from '../util/misc/matrix';\n\nconst ElementsParser = function (\n elements,\n callback,\n options,\n reviver,\n parsingOptions,\n doc\n) {\n this.elements = elements;\n this.callback = callback;\n this.options = options;\n this.reviver = reviver;\n this.svgUid = (options && options.svgUid) || 0;\n this.parsingOptions = parsingOptions;\n this.regexUrl = /^url\\(['\"]?#([^'\"]+)['\"]?\\)/g;\n this.doc = doc;\n};\n\n(function (proto) {\n proto.parse = function () {\n this.instances = new Array(this.elements.length);\n this.numElements = this.elements.length;\n this.createObjects();\n };\n\n proto.createObjects = function () {\n this.elements.forEach((element, i) => {\n element.setAttribute('svgUid', this.svgUid);\n this.createObject(element, i);\n });\n };\n\n proto.findTag = function (el) {\n return fabric[capitalize(el.tagName.replace('svg:', ''))];\n };\n\n proto.createObject = function (el, index) {\n const klass = this.findTag(el);\n if (klass && klass.fromElement) {\n try {\n klass.fromElement(el, this.createCallback(index, el), this.options);\n } catch (err) {\n console.log(err);\n }\n } else {\n this.checkIfDone();\n }\n };\n\n proto.createCallback = function (index, el) {\n const _this = this;\n return function (obj) {\n let _options;\n _this.resolveGradient(obj, el, 'fill');\n _this.resolveGradient(obj, el, 'stroke');\n if (obj instanceof fabric.Image && obj._originalElement) {\n _options = obj.parsePreserveAspectRatioAttribute(el);\n }\n obj._removeTransformMatrix(_options);\n _this.resolveClipPath(obj, el);\n _this.reviver && _this.reviver(el, obj);\n _this.instances[index] = obj;\n _this.checkIfDone();\n };\n };\n\n proto.extractPropertyDefinition = function (obj, property, storage) {\n const value = obj[property],\n regex = this.regexUrl;\n if (!regex.test(value)) {\n return;\n }\n regex.lastIndex = 0;\n const id = regex.exec(value)[1];\n regex.lastIndex = 0;\n return fabric[storage][this.svgUid][id];\n };\n\n proto.resolveGradient = function (obj, el, property) {\n const gradientDef = this.extractPropertyDefinition(\n obj,\n property,\n 'gradientDefs'\n );\n if (gradientDef) {\n const opacityAttr = el.getAttribute(property + '-opacity');\n const gradient = fabric.Gradient.fromElement(gradientDef, obj, {\n ...this.options,\n opacity: opacityAttr,\n });\n obj.set(property, gradient);\n }\n };\n\n proto.createClipPathCallback = function (obj, container) {\n return function (_newObj) {\n _newObj._removeTransformMatrix();\n _newObj.fillRule = _newObj.clipRule;\n container.push(_newObj);\n };\n };\n\n proto.resolveClipPath = function (obj, usingElement) {\n var clipPath = this.extractPropertyDefinition(obj, 'clipPath', 'clipPaths'),\n element,\n klass,\n objTransformInv,\n container,\n gTransform,\n options;\n if (clipPath) {\n container = [];\n objTransformInv = invertTransform(obj.calcTransformMatrix());\n // move the clipPath tag as sibling to the real element that is using it\n const clipPathTag = clipPath[0].parentNode;\n let clipPathOwner = usingElement;\n while (\n clipPathOwner.parentNode &&\n clipPathOwner.getAttribute('clip-path') !== obj.clipPath\n ) {\n clipPathOwner = clipPathOwner.parentNode;\n }\n clipPathOwner.parentNode.appendChild(clipPathTag);\n for (let i = 0; i < clipPath.length; i++) {\n element = clipPath[i];\n klass = this.findTag(element);\n klass.fromElement(\n element,\n this.createClipPathCallback(obj, container),\n this.options\n );\n }\n if (container.length === 1) {\n clipPath = container[0];\n } else {\n clipPath = new fabric.Group(container);\n }\n gTransform = multiplyTransformMatrices(\n objTransformInv,\n clipPath.calcTransformMatrix()\n );\n if (clipPath.clipPath) {\n this.resolveClipPath(clipPath, clipPathOwner);\n }\n const options = qrDecompose(gTransform);\n clipPath.flipX = false;\n clipPath.flipY = false;\n clipPath.set('scaleX', options.scaleX);\n clipPath.set('scaleY', options.scaleY);\n clipPath.angle = options.angle;\n clipPath.skewX = options.skewX;\n clipPath.skewY = 0;\n clipPath.setPositionByOrigin(\n { x: options.translateX, y: options.translateY },\n 'center',\n 'center'\n );\n obj.clipPath = clipPath;\n } else {\n // if clip-path does not resolve to any element, delete the property.\n delete obj.clipPath;\n }\n };\n\n proto.checkIfDone = function () {\n if (--this.numElements === 0) {\n this.instances = this.instances.filter(function (el) {\n // eslint-disable-next-line no-eq-null, eqeqeq\n return el != null;\n });\n this.callback(this.instances, this.elements);\n }\n };\n})(ElementsParser.prototype);\n\nexport { ElementsParser };\n","//@ts-nocheck\n\n/**\n * Returns CSS rules for a given SVG document\n * @param {SVGDocument} doc SVG document to parse\n * @return {Object} CSS rules of this document\n */\nexport function getCSSRules(doc) {\n let styles = doc.getElementsByTagName('style'),\n i,\n len,\n allRules = {},\n rules;\n\n // very crude parsing of style contents\n for (i = 0, len = styles.length; i < len; i++) {\n let styleContents = styles[i].textContent;\n\n // remove comments\n styleContents = styleContents.replace(/\\/\\*[\\s\\S]*?\\*\\//g, '');\n if (styleContents.trim() === '') {\n continue;\n }\n // recovers all the rule in this form `body { style code... }`\n // rules = styleContents.match(/[^{]*\\{[\\s\\S]*?\\}/g);\n rules = styleContents.split('}');\n // remove empty rules.\n rules = rules.filter(function (rule) {\n return rule.trim();\n });\n // at this point we have hopefully an array of rules `body { style code... `\n // eslint-disable-next-line no-loop-func\n rules.forEach(function (rule) {\n const match = rule.split('{'),\n ruleObj = {},\n declaration = match[1].trim(),\n propertyValuePairs = declaration.split(';').filter(function (pair) {\n return pair.trim();\n });\n\n for (i = 0, len = propertyValuePairs.length; i < len; i++) {\n const pair = propertyValuePairs[i].split(':'),\n property = pair[0].trim(),\n value = pair[1].trim();\n ruleObj[property] = value;\n }\n rule = match[0].trim();\n rule.split(',').forEach(function (_rule) {\n _rule = _rule.replace(/^svg/i, '').trim();\n if (_rule === '') {\n return;\n }\n if (allRules[_rule]) {\n Object.assign(allRules[_rule], ruleObj);\n } else {\n allRules[_rule] = Object.assign({}, ruleObj);\n }\n });\n });\n }\n return allRules;\n}\n","//@ts-nocheck\n\nexport function getMultipleNodes(doc, nodeNames) {\n let nodeName,\n nodeArray = [],\n nodeList,\n i,\n len;\n for (i = 0, len = nodeNames.length; i < len; i++) {\n nodeName = nodeNames[i];\n nodeList = doc.getElementsByTagName(nodeName);\n nodeArray = nodeArray.concat(Array.prototype.slice.call(nodeList));\n }\n return nodeArray;\n}\n","//@ts-nocheck\n\n/**\n * @private\n * to support IE8 missing getElementById on SVGdocument and on node xmlDOM\n */\nexport function elementById(doc, id) {\n let el;\n doc.getElementById && (el = doc.getElementById(id));\n if (el) {\n return el;\n }\n let node,\n i,\n len,\n nodelist = doc.getElementsByTagName('*');\n for (i = 0, len = nodelist.length; i < len; i++) {\n node = nodelist[i];\n if (id === node.getAttribute('id')) {\n return node;\n }\n }\n}\n","//@ts-nocheck\n\nimport { elementById } from './elementById';\n\nconst gradientsAttrs = [\n 'gradientTransform',\n 'x1',\n 'x2',\n 'y1',\n 'y2',\n 'gradientUnits',\n 'cx',\n 'cy',\n 'r',\n 'fx',\n 'fy',\n];\nconst xlinkAttr = 'xlink:href';\n\nexport function recursivelyParseGradientsXlink(doc, gradient) {\n const xLink = gradient.getAttribute(xlinkAttr).slice(1),\n referencedGradient = elementById(doc, xLink);\n if (referencedGradient && referencedGradient.getAttribute(xlinkAttr)) {\n recursivelyParseGradientsXlink(doc, referencedGradient);\n }\n gradientsAttrs.forEach(function (attr) {\n if (\n referencedGradient &&\n !gradient.hasAttribute(attr) &&\n referencedGradient.hasAttribute(attr)\n ) {\n gradient.setAttribute(attr, referencedGradient.getAttribute(attr));\n }\n });\n if (!gradient.children.length) {\n const referenceClone = referencedGradient.cloneNode(true);\n while (referenceClone.firstChild) {\n gradient.appendChild(referenceClone.firstChild);\n }\n }\n gradient.removeAttribute(xlinkAttr);\n}\n","//@ts-nocheck\n\nimport { getMultipleNodes } from './getMultipleNodes';\nimport { recursivelyParseGradientsXlink } from './recursivelyParseGradientsXlink';\n\nconst tagArray = [\n 'linearGradient',\n 'radialGradient',\n 'svg:linearGradient',\n 'svg:radialGradient',\n];\n\n/**\n * Parses an SVG document, returning all of the gradient declarations found in it\n * @param {SVGDocument} doc SVG document to parse\n * @return {Object} Gradient definitions; key corresponds to element id, value -- to gradient definition element\n */\nexport function getGradientDefs(doc) {\n let elList = getMultipleNodes(doc, tagArray),\n el,\n j = 0,\n gradientDefs = {};\n j = elList.length;\n while (j--) {\n el = elList[j];\n if (el.getAttribute('xlink:href')) {\n recursivelyParseGradientsXlink(doc, el);\n }\n gradientDefs[el.getAttribute('id')] = el;\n }\n return gradientDefs;\n}\n","//@ts-nocheck\nimport { svgNS } from './constants';\nimport {\n parsePreserveAspectRatioAttribute,\n parseUnit,\n} from '../util/misc/svgParsing';\nimport { svgViewBoxElementsRegEx, reViewBoxAttrValue } from './constants';\n\n/**\n * Add a element that envelop all child elements and makes the viewbox transformMatrix descend on all elements\n */\n\nexport function applyViewboxTransform(element) {\n if (!svgViewBoxElementsRegEx.test(element.nodeName)) {\n return {};\n }\n let viewBoxAttr = element.getAttribute('viewBox'),\n scaleX = 1,\n scaleY = 1,\n minX = 0,\n minY = 0,\n viewBoxWidth,\n viewBoxHeight,\n matrix,\n el,\n widthAttr = element.getAttribute('width'),\n heightAttr = element.getAttribute('height'),\n x = element.getAttribute('x') || 0,\n y = element.getAttribute('y') || 0,\n preserveAspectRatio = element.getAttribute('preserveAspectRatio') || '',\n missingViewBox =\n !viewBoxAttr || !(viewBoxAttr = viewBoxAttr.match(reViewBoxAttrValue)),\n missingDimAttr =\n !widthAttr ||\n !heightAttr ||\n widthAttr === '100%' ||\n heightAttr === '100%',\n toBeParsed = missingViewBox && missingDimAttr,\n parsedDim = {},\n translateMatrix = '',\n widthDiff = 0,\n heightDiff = 0;\n\n parsedDim.width = 0;\n parsedDim.height = 0;\n parsedDim.toBeParsed = toBeParsed;\n\n if (missingViewBox) {\n if (\n (x || y) &&\n element.parentNode &&\n element.parentNode.nodeName !== '#document'\n ) {\n translateMatrix =\n ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') ';\n matrix = (element.getAttribute('transform') || '') + translateMatrix;\n element.setAttribute('transform', matrix);\n element.removeAttribute('x');\n element.removeAttribute('y');\n }\n }\n\n if (toBeParsed) {\n return parsedDim;\n }\n\n if (missingViewBox) {\n parsedDim.width = parseUnit(widthAttr);\n parsedDim.height = parseUnit(heightAttr);\n // set a transform for elements that have x y and are inner(only) SVGs\n return parsedDim;\n }\n minX = -parseFloat(viewBoxAttr[1]);\n minY = -parseFloat(viewBoxAttr[2]);\n viewBoxWidth = parseFloat(viewBoxAttr[3]);\n viewBoxHeight = parseFloat(viewBoxAttr[4]);\n parsedDim.minX = minX;\n parsedDim.minY = minY;\n parsedDim.viewBoxWidth = viewBoxWidth;\n parsedDim.viewBoxHeight = viewBoxHeight;\n if (!missingDimAttr) {\n parsedDim.width = parseUnit(widthAttr);\n parsedDim.height = parseUnit(heightAttr);\n scaleX = parsedDim.width / viewBoxWidth;\n scaleY = parsedDim.height / viewBoxHeight;\n } else {\n parsedDim.width = viewBoxWidth;\n parsedDim.height = viewBoxHeight;\n }\n\n // default is to preserve aspect ratio\n preserveAspectRatio = parsePreserveAspectRatioAttribute(preserveAspectRatio);\n if (preserveAspectRatio.alignX !== 'none') {\n //translate all container for the effect of Mid, Min, Max\n if (preserveAspectRatio.meetOrSlice === 'meet') {\n scaleY = scaleX = scaleX > scaleY ? scaleY : scaleX;\n // calculate additional translation to move the viewbox\n }\n if (preserveAspectRatio.meetOrSlice === 'slice') {\n scaleY = scaleX = scaleX > scaleY ? scaleX : scaleY;\n // calculate additional translation to move the viewbox\n }\n widthDiff = parsedDim.width - viewBoxWidth * scaleX;\n heightDiff = parsedDim.height - viewBoxHeight * scaleX;\n if (preserveAspectRatio.alignX === 'Mid') {\n widthDiff /= 2;\n }\n if (preserveAspectRatio.alignY === 'Mid') {\n heightDiff /= 2;\n }\n if (preserveAspectRatio.alignX === 'Min') {\n widthDiff = 0;\n }\n if (preserveAspectRatio.alignY === 'Min') {\n heightDiff = 0;\n }\n }\n\n if (\n scaleX === 1 &&\n scaleY === 1 &&\n minX === 0 &&\n minY === 0 &&\n x === 0 &&\n y === 0\n ) {\n return parsedDim;\n }\n if ((x || y) && element.parentNode.nodeName !== '#document') {\n translateMatrix = ' translate(' + parseUnit(x) + ' ' + parseUnit(y) + ') ';\n }\n\n matrix =\n translateMatrix +\n ' matrix(' +\n scaleX +\n ' 0' +\n ' 0 ' +\n scaleY +\n ' ' +\n (minX * scaleX + widthDiff) +\n ' ' +\n (minY * scaleY + heightDiff) +\n ') ';\n // seems unused.\n // parsedDim.viewboxTransform = parseTransformAttribute(matrix);\n if (element.nodeName === 'svg') {\n el = element.ownerDocument.createElementNS(svgNS, 'g');\n // element.firstChild != null\n while (element.firstChild) {\n el.appendChild(element.firstChild);\n }\n element.appendChild(el);\n } else {\n el = element;\n el.removeAttribute('x');\n el.removeAttribute('y');\n matrix = el.getAttribute('transform') + matrix;\n }\n el.setAttribute('transform', matrix);\n return parsedDim;\n}\n","//@ts-nocheck\n\nexport function hasAncestorWithNodeName(element, nodeName) {\n while (element && (element = element.parentNode)) {\n if (\n element.nodeName &&\n nodeName.test(element.nodeName.replace('svg:', '')) &&\n !element.getAttribute('instantiated_by_use')\n ) {\n return true;\n }\n }\n return false;\n}\n","//@ts-nocheck\n\nimport { ElementsParser } from './elements_parser';\n\n/**\n * Transforms an array of svg elements to corresponding fabric.* instances\n * @static\n * @memberOf fabric\n * @param {Array} elements Array of elements to parse\n * @param {Function} callback Being passed an array of fabric instances (transformed from SVG elements)\n * @param {Object} [options] Options object\n * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.\n */\nexport function parseElements(\n elements,\n callback,\n options,\n reviver,\n parsingOptions\n) {\n new ElementsParser(\n elements,\n callback,\n options,\n reviver,\n parsingOptions\n ).parse();\n}\n","//@ts-nocheck\nimport { svgNS } from './constants';\nimport { elementById } from './elementById';\nimport { getMultipleNodes } from './getMultipleNodes';\nimport { applyViewboxTransform } from './applyViewboxTransform';\n\nexport function parseUseDirectives(doc) {\n let nodelist = getMultipleNodes(doc, ['use', 'svg:use']),\n i = 0;\n while (nodelist.length && i < nodelist.length) {\n const el = nodelist[i],\n xlinkAttribute = el.getAttribute('xlink:href') || el.getAttribute('href');\n\n if (xlinkAttribute === null) {\n return;\n }\n\n var xlink = xlinkAttribute.slice(1),\n x = el.getAttribute('x') || 0,\n y = el.getAttribute('y') || 0,\n el2 = elementById(doc, xlink).cloneNode(true),\n currentTrans =\n (el2.getAttribute('transform') || '') +\n ' translate(' +\n x +\n ', ' +\n y +\n ')',\n parentNode,\n oldLength = nodelist.length,\n attr,\n j,\n attrs,\n len,\n namespace = svgNS;\n\n applyViewboxTransform(el2);\n if (/^svg$/i.test(el2.nodeName)) {\n const el3 = el2.ownerDocument.createElementNS(namespace, 'g');\n for (j = 0, attrs = el2.attributes, len = attrs.length; j < len; j++) {\n attr = attrs.item(j);\n el3.setAttributeNS(namespace, attr.nodeName, attr.nodeValue);\n }\n // el2.firstChild != null\n while (el2.firstChild) {\n el3.appendChild(el2.firstChild);\n }\n el2 = el3;\n }\n\n for (j = 0, attrs = el.attributes, len = attrs.length; j < len; j++) {\n attr = attrs.item(j);\n if (\n attr.nodeName === 'x' ||\n attr.nodeName === 'y' ||\n attr.nodeName === 'xlink:href' ||\n attr.nodeName === 'href'\n ) {\n continue;\n }\n\n if (attr.nodeName === 'transform') {\n currentTrans = attr.nodeValue + ' ' + currentTrans;\n } else {\n el2.setAttribute(attr.nodeName, attr.nodeValue);\n }\n }\n\n el2.setAttribute('transform', currentTrans);\n el2.setAttribute('instantiated_by_use', '1');\n el2.removeAttribute('id');\n parentNode = el.parentNode;\n parentNode.replaceChild(el2, el);\n // some browsers do not shorten nodelist after replaceChild (IE8)\n if (nodelist.length === oldLength) {\n i++;\n }\n }\n}\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\nimport { applyViewboxTransform } from './applyViewboxTransform';\nimport {\n clipPaths,\n cssRules,\n gradientDefs,\n svgInvalidAncestorsRegEx,\n svgValidTagNamesRegEx,\n} from './constants';\nimport { getCSSRules } from './getCSSRules';\nimport { getGradientDefs } from './getGradientDefs';\nimport { hasAncestorWithNodeName } from './hasAncestorWithNodeName';\nimport { parseElements } from './parseElements';\nimport { parseUseDirectives } from './parseUseDirectives';\n\n/**\n * Parses an SVG document, converts it to an array of corresponding fabric.* instances and passes them to a callback\n * @static\n * @function\n * @memberOf fabric\n * @param {SVGDocument} doc SVG document to parse\n * @param {Function} callback Callback to call when parsing is finished;\n * It's being passed an array of elements (parsed from a document).\n * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.\n * @param {Object} [parsingOptions] options for parsing document\n * @param {String} [parsingOptions.crossOrigin] crossOrigin settings\n * @param {AbortSignal} [parsingOptions.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n */\nexport function parseSVGDocument(doc, callback, reviver, parsingOptions) {\n if (!doc) {\n return;\n }\n if (\n parsingOptions &&\n parsingOptions.signal &&\n parsingOptions.signal.aborted\n ) {\n throw new Error('`options.signal` is in `aborted` state');\n }\n parseUseDirectives(doc);\n\n let svgUid = fabric.Object.__uid++,\n i,\n len,\n options = applyViewboxTransform(doc),\n descendants = Array.from(doc.getElementsByTagName('*'));\n options.crossOrigin = parsingOptions && parsingOptions.crossOrigin;\n options.svgUid = svgUid;\n options.signal = parsingOptions && parsingOptions.signal;\n\n if (descendants.length === 0 && isLikelyNode) {\n // we're likely in node, where \"o3-xml\" library fails to gEBTN(\"*\")\n // https://github.com/ajaxorg/node-o3-xml/issues/21\n descendants = doc.selectNodes('//*[name(.)!=\"svg\"]');\n const arr = [];\n for (i = 0, len = descendants.length; i < len; i++) {\n arr[i] = descendants[i];\n }\n descendants = arr;\n }\n\n const elements = descendants.filter(function (el) {\n applyViewboxTransform(el);\n return (\n svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', '')) &&\n !hasAncestorWithNodeName(el, svgInvalidAncestorsRegEx)\n ); // http://www.w3.org/TR/SVG/struct.html#DefsElement\n });\n if (!elements || (elements && !elements.length)) {\n callback && callback([], {});\n return;\n }\n const localClipPaths = {};\n descendants\n .filter(function (el) {\n return el.nodeName.replace('svg:', '') === 'clipPath';\n })\n .forEach(function (el) {\n const id = el.getAttribute('id');\n localClipPaths[id] = Array.from(el.getElementsByTagName('*')).filter(\n function (el) {\n return svgValidTagNamesRegEx.test(el.nodeName.replace('svg:', ''));\n }\n );\n });\n gradientDefs[svgUid] = getGradientDefs(doc);\n cssRules[svgUid] = getCSSRules(doc);\n clipPaths[svgUid] = localClipPaths;\n // Precedence of rules: style > class > attribute\n parseElements(\n elements,\n function (instances, elements) {\n if (callback) {\n callback(instances, options, elements, descendants);\n delete gradientDefs[svgUid];\n delete cssRules[svgUid];\n delete clipPaths[svgUid];\n }\n },\n Object.assign({}, options),\n reviver,\n parsingOptions\n );\n}\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { parseSVGDocument } from './parseSVGDocument';\n\n/**\n * Takes string corresponding to an SVG document, and parses it into a set of fabric objects\n * @memberOf fabric\n * @param {String} string\n * @param {Function} callback\n * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.\n * @param {Object} [options] Object containing options for parsing\n * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n */\nexport function loadSVGFromString(string, callback, reviver, options) {\n const parser = new fabric.window.DOMParser(),\n doc = parser.parseFromString(string.trim(), 'text/xml');\n parseSVGDocument(\n doc.documentElement,\n function (results, _options, elements, allElements) {\n callback(results, _options, elements, allElements);\n },\n reviver,\n options\n );\n}\n","//@ts-nocheck\n\nimport { request } from '../util/dom_request';\nimport { parseSVGDocument } from './parseSVGDocument';\n\n/**\n * Takes url corresponding to an SVG document, and parses it into a set of fabric objects.\n * Note that SVG is fetched via XMLHttpRequest, so it needs to conform to SOP (Same Origin Policy)\n * @memberOf fabric\n * @param {String} url\n * @param {Function} callback\n * @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.\n * @param {Object} [options] Object containing options for parsing\n * @param {String} [options.crossOrigin] crossOrigin crossOrigin setting to use for external resources\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n */\nexport function loadSVGFromURL(url, callback, reviver, options) {\n new request(url.replace(/^\\n\\s*/, '').trim(), {\n method: 'get',\n onComplete: onComplete,\n signal: options && options.signal,\n });\n\n function onComplete(r) {\n const xml = r.responseXML;\n if (!xml || !xml.documentElement) {\n callback && callback(null);\n return false;\n }\n\n parseSVGDocument(\n xml.documentElement,\n function (results, _options, elements, allElements) {\n callback && callback(results, _options, elements, allElements);\n },\n reviver,\n options\n );\n }\n}\n","//@ts-nocheck\n\nexport function selectorMatches(element, selector) {\n let nodeName = element.nodeName,\n classNames = element.getAttribute('class'),\n id = element.getAttribute('id'),\n matcher,\n i;\n // i check if a selector matches slicing away part from it.\n // if i get empty string i should match\n matcher = new RegExp('^' + nodeName, 'i');\n selector = selector.replace(matcher, '');\n if (id && selector.length) {\n matcher = new RegExp('#' + id + '(?![a-zA-Z\\\\-]+)', 'i');\n selector = selector.replace(matcher, '');\n }\n if (classNames && selector.length) {\n classNames = classNames.split(' ');\n for (i = classNames.length; i--; ) {\n matcher = new RegExp('\\\\.' + classNames[i] + '(?![a-zA-Z\\\\-]+)', 'i');\n selector = selector.replace(matcher, '');\n }\n }\n return selector.length === 0;\n}\n","//@ts-nocheck\nimport { selectorMatches } from './selectorMatches';\n\nexport function doesSomeParentMatch(element, selectors) {\n let selector,\n parentMatching = true;\n while (\n element.parentNode &&\n element.parentNode.nodeType === 1 &&\n selectors.length\n ) {\n if (parentMatching) {\n selector = selectors.pop();\n }\n element = element.parentNode;\n parentMatching = selectorMatches(element, selector);\n }\n return selectors.length === 0;\n}\n","//@ts-nocheck\n\nimport { selectorMatches } from './selectorMatches';\nimport { doesSomeParentMatch } from './doesSomeParentMatch';\n\n/**\n * @private\n */\n\nexport function elementMatchesRule(element, selectors) {\n let firstMatching,\n parentMatching = true;\n //start from rightmost selector.\n firstMatching = selectorMatches(element, selectors.pop());\n if (firstMatching && selectors.length) {\n parentMatching = doesSomeParentMatch(element, selectors);\n }\n return firstMatching && parentMatching && selectors.length === 0;\n}\n","//@ts-nocheck\nimport { cssRules } from './constants';\nimport { elementMatchesRule } from './elementMatchesRule';\n\n/**\n * @private\n */\n\nexport function getGlobalStylesForElement(element, svgUid) {\n const styles = {};\n for (const rule in cssRules[svgUid]) {\n if (elementMatchesRule(element, rule.split(' '))) {\n for (const property in cssRules[svgUid][rule]) {\n styles[property] = cssRules[svgUid][rule][property];\n }\n }\n }\n return styles;\n}\n","//@ts-nocheck\nimport { attributesMap } from './constants';\n\nexport function normalizeAttr(attr) {\n // transform attribute names\n if (attr in attributesMap) {\n return attributesMap[attr];\n }\n return attr;\n}\n","//@ts-nocheck\nimport { cos } from '../util/misc/cos';\nimport { sin } from '../util/misc/sin';\n\nexport function rotateMatrix(matrix, args) {\n const cosValue = cos(args[0]),\n sinValue = sin(args[0]);\n let x = 0,\n y = 0;\n if (args.length === 3) {\n x = args[1];\n y = args[2];\n }\n\n matrix[0] = cosValue;\n matrix[1] = sinValue;\n matrix[2] = -sinValue;\n matrix[3] = cosValue;\n matrix[4] = x - (cosValue * x - sinValue * y);\n matrix[5] = y - (sinValue * x + cosValue * y);\n}\n","//@ts-nocheck\n\nexport function scaleMatrix(matrix, args) {\n const multiplierX = args[0],\n multiplierY = args.length === 2 ? args[1] : args[0];\n\n matrix[0] = multiplierX;\n matrix[3] = multiplierY;\n}\n","//@ts-nocheck\nimport { degreesToRadians } from '../util/misc/radiansDegreesConversion';\n\nexport function skewMatrix(matrix, args, pos) {\n matrix[pos] = Math.tan(degreesToRadians(args[0]));\n}\n","//@ts-nocheck\n\nexport function translateMatrix(matrix, args) {\n matrix[4] = args[0];\n if (args.length === 2) {\n matrix[5] = args[1];\n }\n}\n","//@ts-nocheck\nimport { iMatrix } from '../constants';\nimport { commaWsp, reNum } from './constants';\nimport { multiplyTransformMatrices } from '../util/misc/matrix';\nimport { degreesToRadians } from '../util/misc/radiansDegreesConversion';\nimport { rotateMatrix } from './rotateMatrix';\nimport { scaleMatrix } from './scaleMatrix';\nimport { skewMatrix } from './skewMatrix';\nimport { translateMatrix } from './translateMatrix';\n\n// == begin transform regexp\nconst number = reNum,\n skewX = '(?:(skewX)\\\\s*\\\\(\\\\s*(' + number + ')\\\\s*\\\\))',\n skewY = '(?:(skewY)\\\\s*\\\\(\\\\s*(' + number + ')\\\\s*\\\\))',\n rotate =\n '(?:(rotate)\\\\s*\\\\(\\\\s*(' +\n number +\n ')(?:' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n '))?\\\\s*\\\\))',\n scale =\n '(?:(scale)\\\\s*\\\\(\\\\s*(' +\n number +\n ')(?:' +\n commaWsp +\n '(' +\n number +\n '))?\\\\s*\\\\))',\n translate =\n '(?:(translate)\\\\s*\\\\(\\\\s*(' +\n number +\n ')(?:' +\n commaWsp +\n '(' +\n number +\n '))?\\\\s*\\\\))',\n matrix =\n '(?:(matrix)\\\\s*\\\\(\\\\s*' +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n commaWsp +\n '(' +\n number +\n ')' +\n '\\\\s*\\\\))',\n transform =\n '(?:' +\n matrix +\n '|' +\n translate +\n '|' +\n scale +\n '|' +\n rotate +\n '|' +\n skewX +\n '|' +\n skewY +\n ')',\n transforms =\n '(?:' + transform + '(?:' + commaWsp + '*' + transform + ')*' + ')',\n transformList = '^\\\\s*(?:' + transforms + '?)\\\\s*$',\n // http://www.w3.org/TR/SVG/coords.html#TransformAttribute\n reTransformList = new RegExp(transformList),\n // == end transform regexp\n reTransform = new RegExp(transform, 'g');\n\n/**\n * Parses \"transform\" attribute, returning an array of values\n * @static\n * @function\n * @memberOf fabric\n * @param {String} attributeValue String containing attribute value\n * @return {Array} Array of 6 elements representing transformation matrix\n */\nexport function parseTransformAttribute(attributeValue) {\n // start with identity matrix\n let matrix = iMatrix.concat(),\n matrices = [];\n\n // return if no argument was given or\n // an argument does not match transform attribute regexp\n if (\n !attributeValue ||\n (attributeValue && !reTransformList.test(attributeValue))\n ) {\n return matrix;\n }\n\n attributeValue.replace(reTransform, function (match) {\n const m = new RegExp(transform).exec(match).filter(function (match) {\n // match !== '' && match != null\n return !!match;\n }),\n operation = m[1],\n args = m.slice(2).map(parseFloat);\n\n switch (operation) {\n case 'translate':\n translateMatrix(matrix, args);\n break;\n case 'rotate':\n args[0] = degreesToRadians(args[0]);\n rotateMatrix(matrix, args);\n break;\n case 'scale':\n scaleMatrix(matrix, args);\n break;\n case 'skewX':\n skewMatrix(matrix, args, 2);\n break;\n case 'skewY':\n skewMatrix(matrix, args, 1);\n break;\n case 'matrix':\n matrix = args;\n break;\n }\n\n // snapshot current matrix into matrices array\n matrices.push(matrix.concat());\n // reset\n matrix = iMatrix.concat();\n });\n\n let combinedMatrix = matrices[0];\n while (matrices.length > 1) {\n matrices.shift();\n combinedMatrix = multiplyTransformMatrices(combinedMatrix, matrices[0]);\n }\n return combinedMatrix;\n}\n","//@ts-nocheck\nimport { multiplyTransformMatrices } from '../util/misc/matrix';\nimport { parseUnit } from '../util/misc/svgParsing';\nimport { parseTransformAttribute } from './parseTransformAttribute';\n\nexport function normalizeValue(attr, value, parentAttributes, fontSize) {\n let isArray = Array.isArray(value),\n parsed;\n\n if ((attr === 'fill' || attr === 'stroke') && value === 'none') {\n value = '';\n } else if (attr === 'strokeUniform') {\n return value === 'non-scaling-stroke';\n } else if (attr === 'strokeDashArray') {\n if (value === 'none') {\n value = null;\n } else {\n value = value.replace(/,/g, ' ').split(/\\s+/).map(parseFloat);\n }\n } else if (attr === 'transformMatrix') {\n if (parentAttributes && parentAttributes.transformMatrix) {\n value = multiplyTransformMatrices(\n parentAttributes.transformMatrix,\n parseTransformAttribute(value)\n );\n } else {\n value = parseTransformAttribute(value);\n }\n } else if (attr === 'visible') {\n value = value !== 'none' && value !== 'hidden';\n // display=none on parent element always takes precedence over child element\n if (parentAttributes && parentAttributes.visible === false) {\n value = false;\n }\n } else if (attr === 'opacity') {\n value = parseFloat(value);\n if (parentAttributes && typeof parentAttributes.opacity !== 'undefined') {\n value *= parentAttributes.opacity;\n }\n } else if (attr === 'textAnchor' /* text-anchor */) {\n value = value === 'start' ? 'left' : value === 'end' ? 'right' : 'center';\n } else if (attr === 'charSpacing') {\n // parseUnit returns px and we convert it to em\n parsed = (parseUnit(value, fontSize) / fontSize) * 1000;\n } else if (attr === 'paintFirst') {\n const fillIndex = value.indexOf('fill');\n const strokeIndex = value.indexOf('stroke');\n var value = 'fill';\n if (fillIndex > -1 && strokeIndex > -1 && strokeIndex < fillIndex) {\n value = 'stroke';\n } else if (fillIndex === -1 && strokeIndex > -1) {\n value = 'stroke';\n }\n } else if (attr === 'href' || attr === 'xlink:href' || attr === 'font') {\n return value;\n } else if (attr === 'imageSmoothing') {\n return value === 'optimizeQuality';\n } else {\n parsed = isArray ? value.map(parseUnit) : parseUnit(value, fontSize);\n }\n\n return !isArray && isNaN(parsed) ? value : parsed;\n}\n","//@ts-nocheck\nimport { parseUnit } from '../util/misc/svgParsing';\nimport { reFontDeclaration } from './constants';\n\n/**\n * Parses a short font declaration, building adding its properties to a style object\n * @static\n * @function\n * @memberOf fabric\n * @param {String} value font declaration\n * @param {Object} oStyle definition\n */\nexport function parseFontDeclaration(value, oStyle) {\n const match = value.match(reFontDeclaration);\n\n if (!match) {\n return;\n }\n const fontStyle = match[1],\n // font variant is not used\n // fontVariant = match[2],\n fontWeight = match[3],\n fontSize = match[4],\n lineHeight = match[5],\n fontFamily = match[6];\n\n if (fontStyle) {\n oStyle.fontStyle = fontStyle;\n }\n if (fontWeight) {\n oStyle.fontWeight = isNaN(parseFloat(fontWeight))\n ? fontWeight\n : parseFloat(fontWeight);\n }\n if (fontSize) {\n oStyle.fontSize = parseUnit(fontSize);\n }\n if (fontFamily) {\n oStyle.fontFamily = fontFamily;\n }\n if (lineHeight) {\n oStyle.lineHeight = lineHeight === 'normal' ? 1 : lineHeight;\n }\n}\n","//@ts-nocheck\n\nexport function parseStyleObject(style, oStyle) {\n let attr, value;\n for (const prop in style) {\n if (typeof style[prop] === 'undefined') {\n continue;\n }\n\n attr = prop.toLowerCase();\n value = style[prop];\n\n oStyle[attr] = value;\n }\n}\n","//@ts-nocheck\n\nexport function parseStyleString(style, oStyle) {\n let attr, value;\n style\n .replace(/;\\s*$/, '')\n .split(';')\n .forEach(function (chunk) {\n const pair = chunk.split(':');\n\n attr = pair[0].trim().toLowerCase();\n value = pair[1].trim();\n\n oStyle[attr] = value;\n });\n}\n","//@ts-nocheck\nimport { parseStyleObject } from './parseStyleObject';\nimport { parseStyleString } from './parseStyleString';\n\n/**\n * Parses \"style\" attribute, retuning an object with values\n * @static\n * @memberOf fabric\n * @param {SVGElement} element Element to parse\n * @return {Object} Objects with values parsed from style attribute of an element\n */\nexport function parseStyleAttribute(element) {\n const oStyle = {},\n style = element.getAttribute('style');\n\n if (!style) {\n return oStyle;\n }\n\n if (typeof style === 'string') {\n parseStyleString(style, oStyle);\n } else {\n parseStyleObject(style, oStyle);\n }\n\n return oStyle;\n}\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { Color } from '../color';\nimport { toFixed } from '../util/misc/toFixed';\nimport { colorAttributes } from './constants';\n\n/**\n * @private\n * @param {Object} attributes Array of attributes to parse\n */\n\nexport function setStrokeFillOpacity(attributes) {\n for (const attr in colorAttributes) {\n if (\n typeof attributes[colorAttributes[attr]] === 'undefined' ||\n attributes[attr] === ''\n ) {\n continue;\n }\n\n if (typeof attributes[attr] === 'undefined') {\n if (!fabric.Object.prototype[attr]) {\n continue;\n }\n attributes[attr] = fabric.Object.prototype[attr];\n }\n\n if (attributes[attr].indexOf('url(') === 0) {\n continue;\n }\n\n const color = new Color(attributes[attr]);\n attributes[attr] = color\n .setAlpha(\n toFixed(color.getAlpha() * attributes[colorAttributes[attr]], 2)\n )\n .toRgba();\n }\n return attributes;\n}\n","//@ts-nocheck\nimport { DEFAULT_SVG_FONT_SIZE } from '../constants';\nimport { parseUnit } from '../util/misc/svgParsing';\nimport { cPath, fSize, svgValidParentsRegEx } from './constants';\nimport { getGlobalStylesForElement } from './getGlobalStylesForElement';\nimport { normalizeAttr } from './normalizeAttr';\nimport { normalizeValue } from './normalizeValue';\nimport { parseFontDeclaration } from './parseFontDeclaration';\nimport { parseStyleAttribute } from './parseStyleAttribute';\nimport { setStrokeFillOpacity } from './setStrokeFillOpacity';\n\n/**\n * Returns an object of attributes' name/value, given element and an array of attribute names;\n * Parses parent \"g\" nodes recursively upwards.\n * @param {DOMElement} element Element to parse\n * @param {Array} attributes Array of attributes to parse\n * @return {Object} object containing parsed attributes' names/values\n */\nexport function parseAttributes(element, attributes, svgUid) {\n if (!element) {\n return;\n }\n\n let value,\n parentAttributes = {},\n fontSize,\n parentFontSize;\n\n if (typeof svgUid === 'undefined') {\n svgUid = element.getAttribute('svgUid');\n }\n // if there's a parent container (`g` or `a` or `symbol` node), parse its attributes recursively upwards\n if (\n element.parentNode &&\n svgValidParentsRegEx.test(element.parentNode.nodeName)\n ) {\n parentAttributes = parseAttributes(element.parentNode, attributes, svgUid);\n }\n\n let ownAttributes = attributes.reduce(function (memo, attr) {\n value = element.getAttribute(attr);\n if (value) {\n // eslint-disable-line\n memo[attr] = value;\n }\n return memo;\n }, {});\n // add values parsed from style, which take precedence over attributes\n // (see: http://www.w3.org/TR/SVG/styling.html#UsingPresentationAttributes)\n const cssAttrs = Object.assign(\n getGlobalStylesForElement(element, svgUid),\n parseStyleAttribute(element)\n );\n ownAttributes = Object.assign(ownAttributes, cssAttrs);\n if (cssAttrs[cPath]) {\n element.setAttribute(cPath, cssAttrs[cPath]);\n }\n fontSize = parentFontSize =\n parentAttributes.fontSize || DEFAULT_SVG_FONT_SIZE;\n if (ownAttributes[fSize]) {\n // looks like the minimum should be 9px when dealing with ems. this is what looks like in browsers.\n ownAttributes[fSize] = fontSize = parseUnit(\n ownAttributes[fSize],\n parentFontSize\n );\n }\n\n let normalizedAttr,\n normalizedValue,\n normalizedStyle = {};\n for (const attr in ownAttributes) {\n normalizedAttr = normalizeAttr(attr);\n normalizedValue = normalizeValue(\n normalizedAttr,\n ownAttributes[attr],\n parentAttributes,\n fontSize\n );\n normalizedStyle[normalizedAttr] = normalizedValue;\n }\n if (normalizedStyle && normalizedStyle.font) {\n parseFontDeclaration(normalizedStyle.font, normalizedStyle);\n }\n const mergedAttrs = Object.assign(parentAttributes, normalizedStyle);\n return svgValidParentsRegEx.test(element.nodeName)\n ? mergedAttrs\n : setStrokeFillOpacity(mergedAttrs);\n}\n","//@ts-nocheck\n\n/**\n * Parses \"points\" attribute, returning an array of values\n * @static\n * @memberOf fabric\n * @param {String} points points attribute string\n * @return {Array} array of points\n */\nexport function parsePointsAttribute(points) {\n // points attribute is required and must not be empty\n if (!points) {\n return null;\n }\n\n // replace commas with whitespace and remove bookending whitespace\n points = points.replace(/,/g, ' ').trim();\n\n points = points.split(/\\s+/);\n let parsedPoints = [],\n i,\n len;\n\n for (i = 0, len = points.length; i < len; i += 2) {\n parsedPoints.push({\n x: parseFloat(points[i]),\n y: parseFloat(points[i + 1]),\n });\n }\n\n // odd number of points is an error\n // if (parsedPoints.length % 2 !== 0) {\n // return null;\n // }\n return parsedPoints;\n}\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { clipPaths, cssRules, gradientDefs } from './constants';\nimport { ElementsParser } from './elements_parser';\nimport { getCSSRules } from './getCSSRules';\nimport { getGradientDefs } from './getGradientDefs';\nimport { loadSVGFromString } from './loadSVGFromString';\nimport { loadSVGFromURL } from './loadSVGFromURL';\nimport { parseAttributes } from './parseAttributes';\nimport { parseElements } from './parseElements';\nimport { parseFontDeclaration } from './parseFontDeclaration';\nimport { parsePointsAttribute } from './parsePointsAttribute';\nimport { parseStyleAttribute } from './parseStyleAttribute';\nimport { parseSVGDocument } from './parseSVGDocument';\nimport { parseTransformAttribute } from './parseTransformAttribute';\n\nObject.assign(fabric, {\n cssRules,\n gradientDefs,\n clipPaths,\n parseTransformAttribute,\n parseSVGDocument,\n parseFontDeclaration,\n getGradientDefs,\n parseAttributes,\n parseElements,\n parseStyleAttribute,\n parsePointsAttribute,\n getCSSRules,\n loadSVGFromURL,\n loadSVGFromString,\n ElementsParser,\n});\n","//@ts-nocheck\nimport { Point } from './point.class';\nimport { fabric } from '../HEADER';\n\n/* Adaptation of work of Kevin Lindsey (kevin@kevlindev.com) */\n\ntype IntersectionType = 'Intersection' | 'Coincident' | 'Parallel';\n\n/**\n * **Assuming `T`, `A`, `B` are points on the same line**,\n * check if `T` is contained in `[A, B]` by comparing the direction of the vectors from `T` to `A` and `B`\n * @param T\n * @param A\n * @param B\n * @returns true if `T` is contained\n */\nconst isContainedInInterval = (T: Point, A: Point, B: Point) => {\n const TA = new Point(T).subtract(A);\n const TB = new Point(T).subtract(B);\n return (\n Math.sign(TA.x) !== Math.sign(TB.x) || Math.sign(TA.y) !== Math.sign(TB.y)\n );\n};\n\nexport class Intersection {\n points: Point[];\n\n status?: IntersectionType;\n\n constructor(status?: IntersectionType) {\n this.status = status;\n this.points = [];\n }\n\n /**\n *\n * @param {Point} point\n * @returns\n */\n contains(point) {\n return this.points.some((p) => p.eq(point));\n }\n\n /**\n * Appends points of intersection\n * @param {...Point[]} points\n * @return {Intersection} thisArg\n * @chainable\n */\n private append(...points) {\n this.points = this.points.concat(\n points.filter((point) => {\n return !this.contains(point);\n })\n );\n return this;\n }\n\n /**\n * Checks if a line intersects another\n * @static\n * @param {Point} a1\n * @param {Point} a2\n * @param {Point} b1\n * @param {Point} b2\n * @param {boolean} [aInfinite=true] check segment intersection by passing `false`\n * @param {boolean} [bInfinite=true] check segment intersection by passing `false`\n * @return {Intersection}\n */\n static intersectLineLine(a1, a2, b1, b2, aInfinite = true, bInfinite = true) {\n let result;\n const uaT = (b2.x - b1.x) * (a1.y - b1.y) - (b2.y - b1.y) * (a1.x - b1.x),\n ubT = (a2.x - a1.x) * (a1.y - b1.y) - (a2.y - a1.y) * (a1.x - b1.x),\n uB = (b2.y - b1.y) * (a2.x - a1.x) - (b2.x - b1.x) * (a2.y - a1.y);\n if (uB !== 0) {\n const ua = uaT / uB,\n ub = ubT / uB;\n if (\n (aInfinite || (0 <= ua && ua <= 1)) &&\n (bInfinite || (0 <= ub && ub <= 1))\n ) {\n result = new Intersection('Intersection');\n result.append(\n new Point(a1.x + ua * (a2.x - a1.x), a1.y + ua * (a2.y - a1.y))\n );\n } else {\n result = new Intersection();\n }\n } else {\n if (uaT === 0 || ubT === 0) {\n const segmentsCoincide =\n aInfinite ||\n bInfinite ||\n isContainedInInterval(a1, b1, b2) ||\n isContainedInInterval(a2, b1, b2) ||\n isContainedInInterval(b1, a1, a2) ||\n isContainedInInterval(b2, a1, a2);\n result = new Intersection(segmentsCoincide ? 'Coincident' : undefined);\n } else {\n result = new Intersection('Parallel');\n }\n }\n return result;\n }\n\n /**\n * Checks if a segment intersects a line\n * @see {@link intersectLineLine} for line intersection\n * @static\n * @param {Point} s1 boundary point of segment\n * @param {Point} s2 other boundary point of segment\n * @param {Point} l1 point on line\n * @param {Point} l2 other point on line\n * @return {Intersection}\n */\n static intersectSegmentLine(s1, s2, l1, l2) {\n return Intersection.intersectLineLine(s1, s2, l1, l2, false, true);\n }\n\n /**\n * Checks if a segment intersects another\n * @see {@link intersectLineLine} for line intersection\n * @static\n * @param {Point} a1 boundary point of segment\n * @param {Point} a2 other boundary point of segment\n * @param {Point} b1 boundary point of segment\n * @param {Point} b2 other boundary point of segment\n * @return {Intersection}\n */\n static intersectSegmentSegment(a1, a2, b1, b2) {\n return Intersection.intersectLineLine(a1, a2, b1, b2, false, false);\n }\n\n /**\n * Checks if line intersects polygon\n *\n * @todo account for stroke\n *\n * @static\n * @see {@link intersectSegmentPolygon} for segment intersection\n * @param {Point} a1 point on line\n * @param {Point} a2 other point on line\n * @param {Point[]} points polygon points\n * @param {boolean} [infinite=true] check segment intersection by passing `false`\n * @return {Intersection}\n */\n static intersectLinePolygon(a1, a2, points, infinite = true) {\n const result = new Intersection();\n const length = points.length;\n\n for (let i = 0, b1, b2, inter; i < length; i++) {\n b1 = points[i];\n b2 = points[(i + 1) % length];\n inter = Intersection.intersectLineLine(a1, a2, b1, b2, infinite, false);\n if (inter.status === 'Coincident') {\n return inter;\n }\n result.append(...inter.points);\n }\n\n if (result.points.length > 0) {\n result.status = 'Intersection';\n }\n\n return result;\n }\n\n /**\n * Checks if segment intersects polygon\n * @static\n * @see {@link intersectLinePolygon} for line intersection\n * @param {Point} a1 boundary point of segment\n * @param {Point} a2 other boundary point of segment\n * @param {Point[]} points polygon points\n * @return {Intersection}\n */\n static intersectSegmentPolygon(a1, a2, points) {\n return Intersection.intersectLinePolygon(a1, a2, points, false);\n }\n\n /**\n * Checks if polygon intersects another polygon\n *\n * @todo account for stroke\n *\n * @static\n * @param {Point[]} points1\n * @param {Point[]} points2\n * @return {Intersection}\n */\n static intersectPolygonPolygon(points1, points2) {\n const result = new Intersection(),\n length = points1.length;\n const coincidences = [];\n\n for (let i = 0; i < length; i++) {\n const a1 = points1[i],\n a2 = points1[(i + 1) % length],\n inter = Intersection.intersectSegmentPolygon(a1, a2, points2);\n if (inter.status === 'Coincident') {\n coincidences.push(inter);\n result.append(a1, a2);\n } else {\n result.append(...inter.points);\n }\n }\n\n if (coincidences.length > 0 && coincidences.length === points1.length) {\n return new Intersection('Coincident');\n } else if (result.points.length > 0) {\n result.status = 'Intersection';\n }\n\n return result;\n }\n\n /**\n * Checks if polygon intersects rectangle\n * @static\n * @see {@link intersectPolygonPolygon} for polygon intersection\n * @param {Point[]} points polygon points\n * @param {Point} r1 top left point of rect\n * @param {Point} r2 bottom right point of rect\n * @return {Intersection}\n */\n static intersectPolygonRectangle(points, r1, r2) {\n const min = r1.min(r2),\n max = r1.max(r2),\n topRight = new Point(max.x, min.y),\n bottomLeft = new Point(min.x, max.y);\n\n return Intersection.intersectPolygonPolygon(points, [\n min,\n topRight,\n max,\n bottomLeft,\n ]);\n }\n}\n\nfabric.Intersection = Intersection;\n","export const linearDefaultCoords = {\n x1: 0,\n y1: 0,\n x2: 0,\n y2: 0,\n};\n\nexport const radialDefaultCoords = {\n ...linearDefaultCoords,\n r1: 0,\n r2: 0,\n};\n","import { GradientType, GradientUnits } from '../typedefs';\n\nexport function parseType(el: SVGGradientElement): GradientType {\n return el.nodeName === 'linearGradient' || el.nodeName === 'LINEARGRADIENT'\n ? 'linear'\n : 'radial';\n}\n\nexport function parseGradientUnits(el: SVGGradientElement): GradientUnits {\n return el.getAttribute('gradientUnits') === 'userSpaceOnUse'\n ? 'pixels'\n : 'percentage';\n}\n","import { ifNaN } from '../util/internals';\nimport { capValue } from '../util/misc/capValue';\n\nconst RE_PERCENT = /^(\\d+\\.\\d+)%|(\\d+)%$/;\n\nexport function isPercent(value: string | null) {\n return value && RE_PERCENT.test(value);\n}\n\n/**\n *\n * @param value\n * @param valueIfNaN\n * @returns ∈ [0, 1]\n */\nexport function parsePercent(\n value: string | number | null | undefined,\n valueIfNaN?: number\n) {\n const parsed =\n typeof value === 'number'\n ? value\n : typeof value === 'string'\n ? parseFloat(value) / (isPercent(value) ? 100 : 1)\n : NaN;\n return capValue(0, ifNaN(parsed, valueIfNaN), 1);\n}\n","import { Color } from '../../color';\nimport { parsePercent } from '../../parser/percent';\nimport { ifNaN } from '../../util/internals';\n\nconst RE_KEY_VALUE_PAIRS = /\\s*;\\s*/;\nconst RE_KEY_VALUE = /\\s*:\\s*/;\n\nfunction parseColorStop(el: SVGStopElement, multiplier: number) {\n let colorValue, opacity;\n const style = el.getAttribute('style');\n if (style) {\n const keyValuePairs = style.split(RE_KEY_VALUE_PAIRS);\n\n if (keyValuePairs[keyValuePairs.length - 1] === '') {\n keyValuePairs.pop();\n }\n\n for (let i = keyValuePairs.length; i--; ) {\n const [key, value] = keyValuePairs[i]\n .split(RE_KEY_VALUE)\n .map((s) => s.trim());\n if (key === 'stop-color') {\n colorValue = value;\n } else if (key === 'stop-opacity') {\n opacity = value;\n }\n }\n }\n\n const color = new Color(\n colorValue || el.getAttribute('stop-color') || 'rgb(0,0,0)'\n );\n\n return {\n offset: parsePercent(el.getAttribute('offset'), 0),\n color: color.toRgb(),\n opacity:\n ifNaN(parseFloat(opacity || el.getAttribute('stop-opacity') || ''), 1) *\n color.getAlpha() *\n multiplier,\n };\n}\n\nexport function parseColorStops(\n el: SVGGradientElement,\n opacityAttr: string | null\n) {\n const colorStops = [],\n colorStopEls = el.getElementsByTagName('stop'),\n multiplier = parsePercent(opacityAttr, 1);\n for (let i = colorStopEls.length; i--; ) {\n colorStops.push(parseColorStop(colorStopEls[i], multiplier));\n }\n return colorStops;\n}\n","import { isPercent } from '../../parser/percent';\nimport { TSize } from '../../typedefs';\nimport { GradientCoords, GradientType, GradientUnits } from '../typedefs';\nimport { parseGradientUnits, parseType } from './misc';\n\nfunction convertPercentUnitsToValues<\n T extends GradientType,\n K extends keyof GradientCoords\n>(\n valuesToConvert: Record,\n { width, height, gradientUnits }: TSize & { gradientUnits: GradientUnits }\n) {\n let finalValue;\n return (Object.keys(valuesToConvert) as K[]).reduce((acc, prop) => {\n const propValue = valuesToConvert[prop];\n if (propValue === 'Infinity') {\n finalValue = 1;\n } else if (propValue === '-Infinity') {\n finalValue = 0;\n } else {\n finalValue =\n typeof propValue === 'string' ? parseFloat(propValue) : propValue;\n if (typeof propValue === 'string' && isPercent(propValue)) {\n finalValue *= 0.01;\n if (gradientUnits === 'pixels') {\n // then we need to fix those percentages here in svg parsing\n if (prop === 'x1' || prop === 'x2' || prop === 'r2') {\n finalValue *= width;\n }\n if (prop === 'y1' || prop === 'y2') {\n finalValue *= height;\n }\n }\n }\n }\n acc[prop] = finalValue;\n return acc;\n }, {} as Record);\n}\n\nfunction getValue(el: SVGGradientElement, key: string) {\n return el.getAttribute(key);\n}\n\nexport function parseLinearCoords(el: SVGGradientElement) {\n return {\n x1: getValue(el, 'x1') || 0,\n y1: getValue(el, 'y1') || 0,\n x2: getValue(el, 'x2') || '100%',\n y2: getValue(el, 'y2') || 0,\n };\n}\n\nexport function parseRadialCoords(el: SVGGradientElement) {\n return {\n x1: getValue(el, 'fx') || getValue(el, 'cx') || '50%',\n y1: getValue(el, 'fy') || getValue(el, 'cy') || '50%',\n r1: 0,\n x2: getValue(el, 'cx') || '50%',\n y2: getValue(el, 'cy') || '50%',\n r2: getValue(el, 'r') || '50%',\n };\n}\n\nexport function parseCoords(el: SVGGradientElement, size: TSize) {\n return convertPercentUnitsToValues(\n parseType(el) === 'linear' ? parseLinearCoords(el) : parseRadialCoords(el),\n {\n ...size,\n gradientUnits: parseGradientUnits(el),\n }\n );\n}\n","import { fabric } from '../../HEADER';\nimport { Color } from '../color';\nimport { iMatrix } from '../constants';\nimport { parseTransformAttribute } from '../parser/parseTransformAttribute';\nimport { TMat2D } from '../typedefs';\nimport { pick } from '../util/misc/pick';\nimport { matrixToSVG } from '../util/misc/svgParsing';\nimport { linearDefaultCoords, radialDefaultCoords } from './constants';\nimport {\n parseColorStops,\n parseCoords,\n parseGradientUnits,\n parseType,\n} from './parser';\nimport {\n ColorStop,\n GradientCoords,\n GradientOptions,\n GradientType,\n GradientUnits,\n SVGOptions,\n} from './typedefs';\n\n/**\n * @todo remove this transient junk\n */\ntype FabricObject = any;\n\n/**\n * Gradient class\n * @class Gradient\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#gradients}\n */\nexport class Gradient<\n S,\n T extends GradientType = S extends GradientType ? S : 'linear'\n> {\n /**\n * Horizontal offset for aligning gradients coming from SVG when outside pathgroups\n * @type Number\n * @default 0\n */\n offsetX = 0;\n\n /**\n * Vertical offset for aligning gradients coming from SVG when outside pathgroups\n * @type Number\n * @default 0\n */\n offsetY = 0;\n\n /**\n * A transform matrix to apply to the gradient before painting.\n * Imported from svg gradients, is not applied with the current transform in the center.\n * Before this transform is applied, the origin point is at the top left corner of the object\n * plus the addition of offsetY and offsetX.\n * @type Number[]\n * @default null\n */\n gradientTransform: TMat2D | null = null;\n\n /**\n * coordinates units for coords.\n * If `pixels`, the number of coords are in the same unit of width / height.\n * If set as `percentage` the coords are still a number, but 1 means 100% of width\n * for the X and 100% of the height for the y. It can be bigger than 1 and negative.\n * allowed values pixels or percentage.\n * @type GradientUnits\n * @default 'pixels'\n */\n gradientUnits: GradientUnits;\n\n /**\n * Gradient type linear or radial\n * @type GradientType\n * @default 'linear'\n */\n type: T;\n\n coords: GradientCoords;\n\n colorStops: ColorStop[];\n\n private id: string | number;\n\n constructor({\n type = 'linear' as T,\n gradientUnits = 'pixels',\n coords,\n colorStops = [],\n offsetX = 0,\n offsetY = 0,\n gradientTransform,\n id,\n }: GradientOptions) {\n const uid = fabric.Object.__uid++;\n this.id = id ? `${id}_${uid}` : uid;\n this.type = type;\n this.gradientUnits = gradientUnits;\n this.gradientTransform = gradientTransform || null;\n this.offsetX = offsetX;\n this.offsetY = offsetY;\n this.coords = {\n ...(this.type === 'radial' ? radialDefaultCoords : linearDefaultCoords),\n ...coords,\n } as GradientCoords;\n this.colorStops = colorStops.slice();\n }\n\n // isType(type: S): this is Gradient {\n // return (this.type as GradientType) === type;\n // }\n\n /**\n * Adds another colorStop\n * @param {Record} colorStop Object with offset and color\n * @return {Gradient} thisArg\n */\n addColorStop(colorStops: Record) {\n for (const position in colorStops) {\n const color = new Color(colorStops[position]);\n this.colorStops.push({\n offset: parseFloat(position),\n color: color.toRgb(),\n opacity: color.getAlpha(),\n });\n }\n return this;\n }\n\n /**\n * Returns object representation of a gradient\n * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {object}\n */\n toObject(propertiesToInclude?: (keyof this)[]) {\n return {\n ...pick(this, propertiesToInclude),\n type: this.type,\n coords: this.coords,\n colorStops: this.colorStops,\n offsetX: this.offsetX,\n offsetY: this.offsetY,\n gradientUnits: this.gradientUnits,\n gradientTransform: this.gradientTransform\n ? this.gradientTransform.concat()\n : this.gradientTransform,\n };\n }\n\n /* _TO_SVG_START_ */\n /**\n * Returns SVG representation of an gradient\n * @param {fabric.Object} object Object to create a gradient for\n * @return {String} SVG representation of an gradient (linear/radial)\n */\n toSVG(\n object: FabricObject,\n { additionalTransform: preTransform }: { additionalTransform?: string } = {}\n ) {\n const markup = [],\n transform = (\n this.gradientTransform\n ? this.gradientTransform.concat()\n : iMatrix.concat()\n ) as TMat2D,\n gradientUnits =\n this.gradientUnits === 'pixels'\n ? 'userSpaceOnUse'\n : 'objectBoundingBox';\n // colorStops must be sorted ascending, and guarded against deep mutations\n const colorStops = this.colorStops\n .map((colorStop) => ({ ...colorStop }))\n .sort((a, b) => {\n return a.offset - b.offset;\n });\n\n let offsetX = -this.offsetX,\n offsetY = -this.offsetY;\n if (gradientUnits === 'objectBoundingBox') {\n offsetX /= object.width;\n offsetY /= object.height;\n } else {\n offsetX += object.width / 2;\n offsetY += object.height / 2;\n }\n if (object.type === 'path' && this.gradientUnits !== 'percentage') {\n offsetX -= object.pathOffset.x;\n offsetY -= object.pathOffset.y;\n }\n transform[4] -= offsetX;\n transform[5] -= offsetY;\n\n const commonAttributes = [\n `id=\"SVGID_${this.id}\"`,\n `gradientUnits=\"${gradientUnits}\"`,\n `gradientTransform=\"${\n preTransform ? preTransform + ' ' : ''\n }${matrixToSVG(transform)}\"`,\n '',\n ].join(' ');\n\n if (this.type === 'linear') {\n const { x1, y1, x2, y2 } = this.coords;\n markup.push(\n '\\n'\n );\n } else if (this.type === 'radial') {\n const { x1, y1, x2, y2, r1, r2 } = this\n .coords as GradientCoords<'radial'>;\n const needsSwap = r1 > r2;\n // svg radial gradient has just 1 radius. the biggest.\n markup.push(\n '\\n'\n );\n if (needsSwap) {\n // svg goes from internal to external radius. if radius are inverted, swap color stops.\n colorStops.reverse(); // mutates array\n colorStops.forEach((colorStop) => {\n colorStop.offset = 1 - colorStop.offset;\n });\n }\n const minRadius = Math.min(r1, r2);\n if (minRadius > 0) {\n // i have to shift all colorStops and add new one in 0.\n const maxRadius = Math.max(r1, r2),\n percentageShift = minRadius / maxRadius;\n colorStops.forEach((colorStop) => {\n colorStop.offset += percentageShift * (1 - colorStop.offset);\n });\n }\n }\n\n colorStops.forEach(({ color, offset, opacity }) => {\n markup.push(\n '\\n'\n );\n });\n\n markup.push(\n this.type === 'linear' ? '' : '',\n '\\n'\n );\n\n return markup.join('');\n }\n /* _TO_SVG_END_ */\n\n /**\n * Returns an instance of CanvasGradient\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @return {CanvasGradient}\n */\n toLive(ctx: CanvasRenderingContext2D) {\n if (!this.type) {\n return;\n }\n\n const coords = this.coords as GradientCoords<'radial'>;\n const gradient =\n this.type === 'linear'\n ? ctx.createLinearGradient(coords.x1, coords.y1, coords.x2, coords.y2)\n : ctx.createRadialGradient(\n coords.x1,\n coords.y1,\n coords.r1,\n coords.x2,\n coords.y2,\n coords.r2\n );\n\n this.colorStops.forEach(({ color, opacity, offset }) => {\n gradient.addColorStop(\n offset,\n typeof opacity !== 'undefined'\n ? new Color(color).setAlpha(opacity).toRgba()\n : color\n );\n });\n\n return gradient;\n }\n\n /* _FROM_SVG_START_ */\n /**\n * Returns {@link Gradient} instance from an SVG element\n * @static\n * @memberOf Gradient\n * @param {SVGGradientElement} el SVG gradient element\n * @param {FabricObject} instance\n * @param {String} opacity A fill-opacity or stroke-opacity attribute to multiply to each stop's opacity.\n * @param {SVGOptions} svgOptions an object containing the size of the SVG in order to parse correctly gradients\n * that uses gradientUnits as 'userSpaceOnUse' and percentages.\n * @return {Gradient} Gradient instance\n * @see http://www.w3.org/TR/SVG/pservers.html#LinearGradientElement\n * @see http://www.w3.org/TR/SVG/pservers.html#RadialGradientElement\n *\n * @example\n *\n * \n * \n * \n * \n *\n * OR\n *\n * \n * \n * \n * \n *\n * OR\n *\n * \n * \n * \n * \n * \n *\n * OR\n *\n * \n * \n * \n * \n * \n *\n */\n static fromElement(\n el: SVGGradientElement,\n instance: FabricObject,\n svgOptions: SVGOptions\n ): Gradient {\n const gradientUnits = parseGradientUnits(el);\n return new Gradient({\n id: el.getAttribute('id') || undefined,\n type: parseType(el),\n coords: parseCoords(el, {\n width: svgOptions.viewBoxWidth || svgOptions.width,\n height: svgOptions.viewBoxHeight || svgOptions.height,\n }),\n colorStops: parseColorStops(el, svgOptions.opacity),\n gradientUnits,\n gradientTransform: parseTransformAttribute(\n el.getAttribute('gradientTransform') || ''\n ),\n ...(gradientUnits === 'pixels'\n ? {\n offsetX: -instance.left,\n offsetY: -instance.top,\n }\n : {\n offsetX: 0,\n offsetY: 0,\n }),\n });\n }\n /* _FROM_SVG_END_ */\n}\n\nfabric.Gradient = Gradient;\n","//@ts-nocheck\n\nimport { fabric } from '../HEADER';\nimport { config } from './config';\nimport { TCrossOrigin, TMat2D, TSize } from './typedefs';\nimport { ifNaN } from './util/internals';\nimport { loadImage } from './util/misc/objectEnlive';\nimport { pick } from './util/misc/pick';\nimport { toFixed } from './util/misc/toFixed';\n\nexport type TPatternRepeat = 'repeat' | 'repeat-x' | 'repeat-y' | 'no-repeat';\n\ntype TExportedKeys =\n | 'crossOrigin'\n | 'offsetX'\n | 'offsetY'\n | 'patternTransform'\n | 'repeat'\n | 'source';\n\nexport type TPatternOptions = Partial>;\n\nexport type TPatternSerialized = TPatternOptions & {\n source: string;\n};\n\nexport type TPatternHydrationOptions = {\n /**\n * handle aborting\n * @see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n */\n signal: AbortSignal;\n};\n\ntype TImageSource = { source: HTMLImageElement };\ntype TCanvasSource = { source: HTMLCanvasElement };\n\n/**\n * @see {@link http://fabricjs.com/patterns demo}\n * @see {@link http://fabricjs.com/dynamic-patterns demo}\n */\nexport class Pattern {\n type = 'pattern';\n\n /**\n * @type TPatternRepeat\n * @defaults\n */\n repeat: TPatternRepeat = 'repeat';\n\n /**\n * Pattern horizontal offset from object's left/top corner\n * @type Number\n * @default\n */\n offsetX = 0;\n\n /**\n * Pattern vertical offset from object's left/top corner\n * @type Number\n * @default\n */\n offsetY = 0;\n\n /**\n * @type TCrossOrigin\n * @default\n */\n crossOrigin: TCrossOrigin = '';\n\n /**\n * transform matrix to change the pattern, imported from svgs.\n * @type Array\n * @default\n */\n patternTransform: TMat2D | null = null;\n\n source!: CanvasImageSource;\n\n readonly id: number;\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n * @param {option.source} [source] the pattern source, eventually empty or a drawable\n * @return {fabric.Pattern} thisArg\n */\n constructor(options: TPatternOptions = {}) {\n this.id = fabric.Object.__uid++;\n this.setOptions(options);\n }\n\n setOptions(options: Record) {\n for (const prop in options) {\n this[prop] = options[prop];\n }\n }\n\n /**\n * @returns true if {@link source} is an element\n */\n isImageSource(): this is TImageSource {\n return typeof this.source.src === 'string';\n }\n\n /**\n * @returns true if {@link source} is a element\n */\n isCanvasSource(): this is TCanvasSource {\n return typeof this.source === 'object' && this.source.toDataURL;\n }\n\n sourceToString() {\n return this.isImageSource()\n ? this.source.src\n : this.isCanvasSource()\n ? this.source.toDataURL()\n : '';\n }\n\n /**\n * Returns an instance of CanvasPattern\n * @param {CanvasRenderingContext2D} ctx Context to create pattern\n * @return {CanvasPattern}\n */\n toLive(ctx: CanvasRenderingContext2D) {\n if (\n // if the image failed to load, return, and allow rest to continue loading\n !this.source ||\n // if an image\n (this.isImageSource() &&\n (!this.source.complete ||\n this.source.naturalWidth === 0 ||\n this.source.naturalHeight === 0))\n ) {\n return '';\n }\n\n return ctx.createPattern(this.source, this.repeat);\n }\n\n /**\n * Returns object representation of a pattern\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {object} Object representation of a pattern instance\n */\n toObject(propertiesToInclude: (keyof this)[]) {\n return {\n ...pick(this, propertiesToInclude),\n type: 'pattern',\n source: this.sourceToString(),\n repeat: this.repeat,\n crossOrigin: this.crossOrigin,\n offsetX: toFixed(this.offsetX, config.NUM_FRACTION_DIGITS),\n offsetY: toFixed(this.offsetY, config.NUM_FRACTION_DIGITS),\n patternTransform: this.patternTransform\n ? this.patternTransform.concat()\n : null,\n };\n }\n\n /* _TO_SVG_START_ */\n /**\n * Returns SVG representation of a pattern\n */\n toSVG({ width, height }: TSize) {\n const patternSource = this.source,\n patternOffsetX = ifNaN(this.offsetX / width, 0),\n patternOffsetY = ifNaN(this.offsetY / height, 0),\n patternWidth =\n this.repeat === 'repeat-y' || this.repeat === 'no-repeat'\n ? 1 + Math.abs(patternOffsetX || 0)\n : ifNaN(patternSource.width / width, 0),\n patternHeight =\n this.repeat === 'repeat-x' || this.repeat === 'no-repeat'\n ? 1 + Math.abs(patternOffsetY || 0)\n : ifNaN(patternSource.height / height, 0);\n\n return [\n ``,\n ``,\n ``,\n '',\n ].join('\\n');\n }\n /* _TO_SVG_END_ */\n\n static async fromObject(\n { source, ...serialized }: TPatternSerialized,\n options: TPatternHydrationOptions\n ) {\n const img = await loadImage(source, {\n ...options,\n crossOrigin: serialized.crossOrigin,\n });\n return new Pattern({ ...serialized, source: img });\n }\n}\n\nfabric.Pattern = Pattern;\n","//@ts-nocheck\n\nimport { Color } from './color';\nimport { config } from './config';\nimport { Point } from './point.class';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n toFixed = fabric.util.toFixed;\n\n /**\n * Shadow class\n * @class fabric.Shadow\n * @see {@link http://fabricjs.com/shadows|Shadow demo}\n * @see {@link fabric.Shadow#initialize} for constructor definition\n */\n fabric.Shadow = fabric.util.createClass(\n /** @lends fabric.Shadow.prototype */ {\n /**\n * Shadow color\n * @type String\n * @default\n */\n color: 'rgb(0,0,0)',\n\n /**\n * Shadow blur\n * @type Number\n */\n blur: 0,\n\n /**\n * Shadow horizontal offset\n * @type Number\n * @default\n */\n offsetX: 0,\n\n /**\n * Shadow vertical offset\n * @type Number\n * @default\n */\n offsetY: 0,\n\n /**\n * Whether the shadow should affect stroke operations\n * @type Boolean\n * @default\n */\n affectStroke: false,\n\n /**\n * Indicates whether toObject should include default values\n * @type Boolean\n * @default\n */\n includeDefaultValues: true,\n\n /**\n * When `false`, the shadow will scale with the object.\n * When `true`, the shadow's offsetX, offsetY, and blur will not be affected by the object's scale.\n * default to false\n * @type Boolean\n * @default\n */\n nonScaling: false,\n\n /**\n * Constructor\n * @param {Object|String} [options] Options object with any of color, blur, offsetX, offsetY properties or string (e.g. \"rgba(0,0,0,0.2) 2px 2px 10px\")\n * @return {fabric.Shadow} thisArg\n */\n initialize: function (options) {\n if (typeof options === 'string') {\n options = this._parseShadow(options);\n }\n\n for (var prop in options) {\n this[prop] = options[prop];\n }\n\n this.id = fabric.Object.__uid++;\n },\n\n /**\n * @private\n * @param {String} shadow Shadow value to parse\n * @return {Object} Shadow object with color, offsetX, offsetY and blur\n */\n _parseShadow: function (shadow) {\n var shadowStr = shadow.trim(),\n offsetsAndBlur = fabric.Shadow.reOffsetsAndBlur.exec(shadowStr) || [],\n color =\n shadowStr.replace(fabric.Shadow.reOffsetsAndBlur, '') ||\n 'rgb(0,0,0)';\n\n return {\n color: color.trim(),\n offsetX: parseFloat(offsetsAndBlur[1], 10) || 0,\n offsetY: parseFloat(offsetsAndBlur[2], 10) || 0,\n blur: parseFloat(offsetsAndBlur[3], 10) || 0,\n };\n },\n\n /**\n * Returns a string representation of an instance\n * @see http://www.w3.org/TR/css-text-decor-3/#text-shadow\n * @return {String} Returns CSS3 text-shadow declaration\n */\n toString: function () {\n return [this.offsetX, this.offsetY, this.blur, this.color].join('px ');\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns SVG representation of a shadow\n * @param {fabric.Object} object\n * @return {String} SVG representation of a shadow\n */\n toSVG: function (object) {\n var fBoxX = 40,\n fBoxY = 40,\n NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS,\n offset = fabric.util.rotateVector(\n new Point(this.offsetX, this.offsetY),\n fabric.util.degreesToRadians(-object.angle)\n ),\n BLUR_BOX = 20,\n color = new Color(this.color);\n\n if (object.width && object.height) {\n //http://www.w3.org/TR/SVG/filters.html#FilterEffectsRegion\n // we add some extra space to filter box to contain the blur ( 20 )\n fBoxX =\n toFixed(\n (Math.abs(offset.x) + this.blur) / object.width,\n NUM_FRACTION_DIGITS\n ) *\n 100 +\n BLUR_BOX;\n fBoxY =\n toFixed(\n (Math.abs(offset.y) + this.blur) / object.height,\n NUM_FRACTION_DIGITS\n ) *\n 100 +\n BLUR_BOX;\n }\n if (object.flipX) {\n offset.x *= -1;\n }\n if (object.flipY) {\n offset.y *= -1;\n }\n\n return (\n '\\n' +\n '\\t\\n' +\n '\\t\\n' +\n '\\t\\n' +\n '\\t\\n' +\n '\\t\\n' +\n '\\t\\t\\n' +\n '\\t\\t\\n' +\n '\\t\\n' +\n '\\n'\n );\n },\n /* _TO_SVG_END_ */\n\n /**\n * Returns object representation of a shadow\n * @return {Object} Object representation of a shadow instance\n */\n toObject: function () {\n if (this.includeDefaultValues) {\n return {\n color: this.color,\n blur: this.blur,\n offsetX: this.offsetX,\n offsetY: this.offsetY,\n affectStroke: this.affectStroke,\n nonScaling: this.nonScaling,\n };\n }\n var obj = {},\n proto = fabric.Shadow.prototype;\n\n [\n 'color',\n 'blur',\n 'offsetX',\n 'offsetY',\n 'affectStroke',\n 'nonScaling',\n ].forEach(function (prop) {\n if (this[prop] !== proto[prop]) {\n obj[prop] = this[prop];\n }\n }, this);\n\n return obj;\n },\n }\n );\n\n /**\n * Regex matching shadow offsetX, offsetY and blur (ex: \"2px 2px 10px rgba(0,0,0,0.2)\", \"rgb(0,255,0) 2px 2px\")\n * @static\n * @field\n * @memberOf fabric.Shadow\n */\n // eslint-disable-next-line max-len\n fabric.Shadow.reOffsetsAndBlur =\n /(?:\\s|^)(-?\\d+(?:\\.\\d*)?(?:px)?(?:\\s?|$))?(-?\\d+(?:\\.\\d*)?(?:px)?(?:\\s?|$))?(\\d+(?:\\.\\d*)?(?:px)?)?(?:\\s?|$)(?:$|\\s)/;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { config } from './config';\nimport { VERSION } from './constants';\nimport { Point } from './point.class';\nimport { requestAnimFrame } from './util/animate';\nimport { removeFromArray } from './util/internals';\nimport { pick } from './util/misc/pick';\n\n(function (global) {\n // aliases for faster resolution\n var fabric = global.fabric,\n extend = fabric.util.object.extend,\n getElementOffset = fabric.util.getElementOffset,\n toFixed = fabric.util.toFixed,\n transformPoint = fabric.util.transformPoint,\n invertTransform = fabric.util.invertTransform,\n getNodeCanvas = fabric.util.getNodeCanvas,\n createCanvasElement = fabric.util.createCanvasElement,\n CANVAS_INIT_ERROR = new Error('Could not initialize `canvas` element');\n\n /**\n * Static canvas class\n * @class fabric.StaticCanvas\n * @mixes fabric.Collection\n * @mixes fabric.Observable\n * @see {@link http://fabricjs.com/static_canvas|StaticCanvas demo}\n * @see {@link fabric.StaticCanvas#initialize} for constructor definition\n * @fires before:render\n * @fires after:render\n * @fires canvas:cleared\n * @fires object:added\n * @fires object:removed\n */\n // eslint-disable-next-line max-len\n fabric.StaticCanvas = fabric.util.createClass(\n fabric.CommonMethods,\n fabric.Collection,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Constructor\n * @param {HTMLElement | String} el <canvas> element to initialize instance on\n * @param {Object} [options] Options object\n * @return {Object} thisArg\n */\n initialize: function (el, options) {\n options || (options = {});\n this.renderAndResetBound = this.renderAndReset.bind(this);\n this.requestRenderAllBound = this.requestRenderAll.bind(this);\n this._initStatic(el, options);\n },\n\n /**\n * Background color of canvas instance.\n * @type {(String|fabric.Pattern)}\n * @default\n */\n backgroundColor: '',\n\n /**\n * Background image of canvas instance.\n * since 2.4.0 image caching is active, please when putting an image as background, add to the\n * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom\n * vale. As an alternative you can disable image objectCaching\n * @type fabric.Image\n * @default\n */\n backgroundImage: null,\n\n /**\n * Overlay color of canvas instance.\n * @since 1.3.9\n * @type {(String|fabric.Pattern)}\n * @default\n */\n overlayColor: '',\n\n /**\n * Overlay image of canvas instance.\n * since 2.4.0 image caching is active, please when putting an image as overlay, add to the\n * canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom\n * vale. As an alternative you can disable image objectCaching\n * @type fabric.Image\n * @default\n */\n overlayImage: null,\n\n /**\n * Indicates whether toObject/toDatalessObject should include default values\n * if set to false, takes precedence over the object value.\n * @type Boolean\n * @default\n */\n includeDefaultValues: true,\n\n /**\n * Indicates whether objects' state should be saved\n * @type Boolean\n * @default\n */\n stateful: false,\n\n /**\n * Indicates whether {@link fabric.Collection.add}, {@link fabric.Collection.insertAt} and {@link fabric.Collection.remove},\n * {@link fabric.StaticCanvas.moveTo}, {@link fabric.StaticCanvas.clear} and many more, should also re-render canvas.\n * Disabling this option will not give a performance boost when adding/removing a lot of objects to/from canvas at once\n * since the renders are quequed and executed one per frame.\n * Disabling is suggested anyway and managing the renders of the app manually is not a big effort ( canvas.requestRenderAll() )\n * Left default to true to do not break documentation and old app, fiddles.\n * @type Boolean\n * @default\n */\n renderOnAddRemove: true,\n\n /**\n * Indicates whether object controls (borders/controls) are rendered above overlay image\n * @type Boolean\n * @default\n */\n controlsAboveOverlay: false,\n\n /**\n * Indicates whether the browser can be scrolled when using a touchscreen and dragging on the canvas\n * @type Boolean\n * @default\n */\n allowTouchScrolling: false,\n\n /**\n * Indicates whether this canvas will use image smoothing, this is on by default in browsers\n * @type Boolean\n * @default\n */\n imageSmoothingEnabled: true,\n\n /**\n * The transformation (a Canvas 2D API transform matrix) which focuses the viewport\n * @type Array\n * @example Default transform\n * canvas.viewportTransform = [1, 0, 0, 1, 0, 0];\n * @example Scale by 70% and translate toward bottom-right by 50, without skewing\n * canvas.viewportTransform = [0.7, 0, 0, 0.7, 50, 50];\n * @default\n */\n viewportTransform: fabric.iMatrix.concat(),\n\n /**\n * if set to false background image is not affected by viewport transform\n * @since 1.6.3\n * @type Boolean\n * @default\n */\n backgroundVpt: true,\n\n /**\n * if set to false overlya image is not affected by viewport transform\n * @since 1.6.3\n * @type Boolean\n * @default\n */\n overlayVpt: true,\n\n /**\n * When true, canvas is scaled by devicePixelRatio for better rendering on retina screens\n * @type Boolean\n * @default\n */\n enableRetinaScaling: true,\n\n /**\n * Describe canvas element extension over design\n * properties are tl,tr,bl,br.\n * if canvas is not zoomed/panned those points are the four corner of canvas\n * if canvas is viewportTransformed you those points indicate the extension\n * of canvas element in plain untrasformed coordinates\n * The coordinates get updated with @method calcViewportBoundaries.\n * @memberOf fabric.StaticCanvas.prototype\n */\n vptCoords: {},\n\n /**\n * Based on vptCoords and object.aCoords, skip rendering of objects that\n * are not included in current viewport.\n * May greatly help in applications with crowded canvas and use of zoom/pan\n * If One of the corner of the bounding box of the object is on the canvas\n * the objects get rendered.\n * @memberOf fabric.StaticCanvas.prototype\n * @type Boolean\n * @default\n */\n skipOffscreen: true,\n\n /**\n * a fabricObject that, without stroke define a clipping area with their shape. filled in black\n * the clipPath object gets used when the canvas has rendered, and the context is placed in the\n * top left corner of the canvas.\n * clipPath will clip away controls, if you do not want this to happen use controlsAboveOverlay = true\n * @type fabric.Object\n */\n clipPath: undefined,\n\n /**\n * @private\n * @param {HTMLElement | String} el <canvas> element to initialize instance on\n * @param {Object} [options] Options object\n */\n _initStatic: function (el, options) {\n this._objects = [];\n this._createLowerCanvas(el);\n this._initOptions(options);\n // only initialize retina scaling once\n if (!this.interactive) {\n this._initRetinaScaling();\n }\n this.calcOffset();\n },\n\n /**\n * @private\n */\n _isRetinaScaling: function () {\n return config.devicePixelRatio > 1 && this.enableRetinaScaling;\n },\n\n /**\n * @private\n * @return {Number} retinaScaling if applied, otherwise 1;\n */\n getRetinaScaling: function () {\n return this._isRetinaScaling()\n ? Math.max(1, config.devicePixelRatio)\n : 1;\n },\n\n /**\n * @private\n */\n _initRetinaScaling: function () {\n if (!this._isRetinaScaling()) {\n return;\n }\n var scaleRatio = config.devicePixelRatio;\n this.__initRetinaScaling(\n scaleRatio,\n this.lowerCanvasEl,\n this.contextContainer\n );\n if (this.upperCanvasEl) {\n this.__initRetinaScaling(\n scaleRatio,\n this.upperCanvasEl,\n this.contextTop\n );\n }\n },\n\n __initRetinaScaling: function (scaleRatio, canvas, context) {\n canvas.setAttribute('width', this.width * scaleRatio);\n canvas.setAttribute('height', this.height * scaleRatio);\n context.scale(scaleRatio, scaleRatio);\n },\n\n /**\n * Calculates canvas element offset relative to the document\n * This method is also attached as \"resize\" event handler of window\n * @return {fabric.Canvas} instance\n * @chainable\n */\n calcOffset: function () {\n this._offset = getElementOffset(this.lowerCanvasEl);\n return this;\n },\n\n /**\n * @private\n */\n _createCanvasElement: function () {\n var element = createCanvasElement();\n if (!element) {\n throw CANVAS_INIT_ERROR;\n }\n if (!element.style) {\n element.style = {};\n }\n if (typeof element.getContext === 'undefined') {\n throw CANVAS_INIT_ERROR;\n }\n return element;\n },\n\n /**\n * @private\n * @param {Object} [options] Options object\n */\n _initOptions: function (options) {\n var lowerCanvasEl = this.lowerCanvasEl;\n this._setOptions(options);\n\n this.width = this.width || parseInt(lowerCanvasEl.width, 10) || 0;\n this.height = this.height || parseInt(lowerCanvasEl.height, 10) || 0;\n\n if (!this.lowerCanvasEl.style) {\n return;\n }\n\n lowerCanvasEl.width = this.width;\n lowerCanvasEl.height = this.height;\n\n lowerCanvasEl.style.width = this.width + 'px';\n lowerCanvasEl.style.height = this.height + 'px';\n\n this.viewportTransform = this.viewportTransform.slice();\n },\n\n /**\n * Creates a bottom canvas\n * @private\n * @param {HTMLElement} [canvasEl]\n */\n _createLowerCanvas: function (canvasEl) {\n // canvasEl === 'HTMLCanvasElement' does not work on jsdom/node\n if (canvasEl && canvasEl.getContext) {\n this.lowerCanvasEl = canvasEl;\n } else {\n this.lowerCanvasEl =\n fabric.document.getElementById(canvasEl) ||\n canvasEl ||\n this._createCanvasElement();\n }\n if (this.lowerCanvasEl.hasAttribute('data-fabric')) {\n /* _DEV_MODE_START_ */\n throw new Error(\n 'fabric.js: trying to initialize a canvas that has already been initialized'\n );\n /* _DEV_MODE_END_ */\n }\n this.lowerCanvasEl.classList.add('lower-canvas');\n this.lowerCanvasEl.setAttribute('data-fabric', 'main');\n if (this.interactive) {\n this._originalCanvasStyle = this.lowerCanvasEl.style.cssText;\n this._applyCanvasStyle(this.lowerCanvasEl);\n }\n\n this.contextContainer = this.lowerCanvasEl.getContext('2d');\n },\n\n /**\n * Returns canvas width (in px)\n * @return {Number}\n */\n getWidth: function () {\n return this.width;\n },\n\n /**\n * Returns canvas height (in px)\n * @return {Number}\n */\n getHeight: function () {\n return this.height;\n },\n\n /**\n * Sets width of this canvas instance\n * @param {Number|String} value Value to set width to\n * @param {Object} [options] Options object\n * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions\n * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n setWidth: function (value, options) {\n return this.setDimensions({ width: value }, options);\n },\n\n /**\n * Sets height of this canvas instance\n * @param {Number|String} value Value to set height to\n * @param {Object} [options] Options object\n * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions\n * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n setHeight: function (value, options) {\n return this.setDimensions({ height: value }, options);\n },\n\n /**\n * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em)\n * @param {Object} dimensions Object with width/height properties\n * @param {Number|String} [dimensions.width] Width of canvas element\n * @param {Number|String} [dimensions.height] Height of canvas element\n * @param {Object} [options] Options object\n * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions\n * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n setDimensions: function (dimensions, options) {\n var cssValue;\n\n options = options || {};\n\n for (var prop in dimensions) {\n cssValue = dimensions[prop];\n\n if (!options.cssOnly) {\n this._setBackstoreDimension(prop, dimensions[prop]);\n cssValue += 'px';\n this.hasLostContext = true;\n }\n\n if (!options.backstoreOnly) {\n this._setCssDimension(prop, cssValue);\n }\n }\n if (this._isCurrentlyDrawing) {\n this.freeDrawingBrush &&\n this.freeDrawingBrush._setBrushStyles(this.contextTop);\n }\n this._initRetinaScaling();\n this.calcOffset();\n\n if (!options.cssOnly) {\n this.requestRenderAll();\n }\n\n return this;\n },\n\n /**\n * Helper for setting width/height\n * @private\n * @param {String} prop property (width|height)\n * @param {Number} value value to set property to\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n _setBackstoreDimension: function (prop, value) {\n this.lowerCanvasEl[prop] = value;\n\n if (this.upperCanvasEl) {\n this.upperCanvasEl[prop] = value;\n }\n\n if (this.cacheCanvasEl) {\n this.cacheCanvasEl[prop] = value;\n }\n\n this[prop] = value;\n\n return this;\n },\n\n /**\n * Helper for setting css width/height\n * @private\n * @param {String} prop property (width|height)\n * @param {String} value value to set property to\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n _setCssDimension: function (prop, value) {\n this.lowerCanvasEl.style[prop] = value;\n\n if (this.upperCanvasEl) {\n this.upperCanvasEl.style[prop] = value;\n }\n\n if (this.wrapperEl) {\n this.wrapperEl.style[prop] = value;\n }\n\n return this;\n },\n\n /**\n * Returns canvas zoom level\n * @return {Number}\n */\n getZoom: function () {\n return this.viewportTransform[0];\n },\n\n /**\n * Sets viewport transformation of this canvas instance\n * @param {Array} vpt a Canvas 2D API transform matrix\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n setViewportTransform: function (vpt) {\n var activeObject = this._activeObject,\n backgroundObject = this.backgroundImage,\n overlayObject = this.overlayImage,\n object,\n i,\n len;\n this.viewportTransform = vpt;\n for (i = 0, len = this._objects.length; i < len; i++) {\n object = this._objects[i];\n object.group || object.setCoords(true);\n }\n if (activeObject) {\n activeObject.setCoords();\n }\n if (backgroundObject) {\n backgroundObject.setCoords(true);\n }\n if (overlayObject) {\n overlayObject.setCoords(true);\n }\n this.calcViewportBoundaries();\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Sets zoom level of this canvas instance, the zoom centered around point\n * meaning that following zoom to point with the same point will have the visual\n * effect of the zoom originating from that point. The point won't move.\n * It has nothing to do with canvas center or visual center of the viewport.\n * @param {Point} point to zoom with respect to\n * @param {Number} value to set zoom to, less than 1 zooms out\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n zoomToPoint: function (point, value) {\n // TODO: just change the scale, preserve other transformations\n var before = point,\n vpt = this.viewportTransform.slice(0);\n point = transformPoint(point, invertTransform(this.viewportTransform));\n vpt[0] = value;\n vpt[3] = value;\n var after = transformPoint(point, vpt);\n vpt[4] += before.x - after.x;\n vpt[5] += before.y - after.y;\n return this.setViewportTransform(vpt);\n },\n\n /**\n * Sets zoom level of this canvas instance\n * @param {Number} value to set zoom to, less than 1 zooms out\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n setZoom: function (value) {\n this.zoomToPoint(new Point(0, 0), value);\n return this;\n },\n\n /**\n * Pan viewport so as to place point at top left corner of canvas\n * @param {Point} point to move to\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n absolutePan: function (point) {\n var vpt = this.viewportTransform.slice(0);\n vpt[4] = -point.x;\n vpt[5] = -point.y;\n return this.setViewportTransform(vpt);\n },\n\n /**\n * Pans viewpoint relatively\n * @param {Point} point (position vector) to move by\n * @return {fabric.Canvas} instance\n * @chainable true\n */\n relativePan: function (point) {\n return this.absolutePan(\n new Point(\n -point.x - this.viewportTransform[4],\n -point.y - this.viewportTransform[5]\n )\n );\n },\n\n /**\n * Returns <canvas> element corresponding to this instance\n * @return {HTMLCanvasElement}\n */\n getElement: function () {\n return this.lowerCanvasEl;\n },\n\n /**\n * @param {...fabric.Object} objects to add\n * @return {Self} thisArg\n * @chainable\n */\n add: function () {\n fabric.Collection.add.call(this, arguments, this._onObjectAdded);\n arguments.length > 0 &&\n this.renderOnAddRemove &&\n this.requestRenderAll();\n return this;\n },\n\n /**\n * Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`)\n * An object should be an instance of (or inherit from) fabric.Object\n * @param {fabric.Object|fabric.Object[]} objects Object(s) to insert\n * @param {Number} index Index to insert object at\n * @param {Boolean} nonSplicing When `true`, no splicing (shifting) of objects occurs\n * @return {Self} thisArg\n * @chainable\n */\n insertAt: function (objects, index) {\n fabric.Collection.insertAt.call(\n this,\n objects,\n index,\n this._onObjectAdded\n );\n (Array.isArray(objects) ? objects.length > 0 : !!objects) &&\n this.renderOnAddRemove &&\n this.requestRenderAll();\n return this;\n },\n\n /**\n * @param {...fabric.Object} objects to remove\n * @return {Self} thisArg\n * @chainable\n */\n remove: function () {\n var removed = fabric.Collection.remove.call(\n this,\n arguments,\n this._onObjectRemoved\n );\n removed.length > 0 && this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * @private\n * @param {fabric.Object} obj Object that was added\n */\n _onObjectAdded: function (obj) {\n this.stateful && obj.setupState();\n if (obj.canvas && obj.canvas !== this) {\n /* _DEV_MODE_START_ */\n console.warn(\n 'fabric.Canvas: trying to add an object that belongs to a different canvas.\\n' +\n 'Resulting to default behavior: removing object from previous canvas and adding to new canvas'\n );\n /* _DEV_MODE_END_ */\n obj.canvas.remove(obj);\n }\n obj._set('canvas', this);\n obj.setCoords();\n this.fire('object:added', { target: obj });\n obj.fire('added', { target: this });\n },\n\n /**\n * @private\n * @param {fabric.Object} obj Object that was removed\n */\n _onObjectRemoved: function (obj) {\n obj._set('canvas', undefined);\n this.fire('object:removed', { target: obj });\n obj.fire('removed', { target: this });\n },\n\n /**\n * Clears specified context of canvas element\n * @param {CanvasRenderingContext2D} ctx Context to clear\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n clearContext: function (ctx) {\n ctx.clearRect(0, 0, this.width, this.height);\n return this;\n },\n\n /**\n * Returns context of canvas where objects are drawn\n * @return {CanvasRenderingContext2D}\n */\n getContext: function () {\n return this.contextContainer;\n },\n\n /**\n * Clears all contexts (background, main, top) of an instance\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n clear: function () {\n this.remove.apply(this, this.getObjects());\n this.backgroundImage = null;\n this.overlayImage = null;\n this.backgroundColor = '';\n this.overlayColor = '';\n if (this._hasITextHandlers) {\n this.off('mouse:up', this._mouseUpITextHandler);\n this._iTextInstances = null;\n this._hasITextHandlers = false;\n }\n this.clearContext(this.contextContainer);\n this.fire('canvas:cleared');\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Renders the canvas\n * @return {fabric.Canvas} instance\n * @chainable\n */\n renderAll: function () {\n this.cancelRequestedRender();\n if (this.destroyed) {\n return;\n }\n this.renderCanvas(this.contextContainer, this._objects);\n return this;\n },\n\n /**\n * Function created to be instance bound at initialization\n * used in requestAnimationFrame rendering\n * Let the fabricJS call it. If you call it manually you could have more\n * animationFrame stacking on to of each other\n * for an imperative rendering, use canvas.renderAll\n * @private\n * @return {fabric.Canvas} instance\n * @chainable\n */\n renderAndReset: function () {\n this.nextRenderHandle = 0;\n this.renderAll();\n },\n\n /**\n * Append a renderAll request to next animation frame.\n * unless one is already in progress, in that case nothing is done\n * a boolean flag will avoid appending more.\n * @return {fabric.Canvas} instance\n * @chainable\n */\n requestRenderAll: function () {\n if (!this.nextRenderHandle && !this.disposed && !this.destroyed) {\n this.nextRenderHandle = requestAnimFrame(this.renderAndResetBound);\n }\n return this;\n },\n\n /**\n * Calculate the position of the 4 corner of canvas with current viewportTransform.\n * helps to determinate when an object is in the current rendering viewport using\n * object absolute coordinates ( aCoords )\n * @return {Object} points.tl\n * @chainable\n */\n calcViewportBoundaries: function () {\n var width = this.width,\n height = this.height,\n iVpt = invertTransform(this.viewportTransform),\n a = transformPoint({ x: 0, y: 0 }, iVpt),\n b = transformPoint({ x: width, y: height }, iVpt),\n // we don't support vpt flipping\n // but the code is robust enough to mostly work with flipping\n min = a.min(b),\n max = a.max(b);\n return (this.vptCoords = {\n tl: min,\n tr: new Point(max.x, min.y),\n bl: new Point(min.x, max.y),\n br: max,\n });\n },\n\n cancelRequestedRender: function () {\n if (this.nextRenderHandle) {\n fabric.util.cancelAnimFrame(this.nextRenderHandle);\n this.nextRenderHandle = 0;\n }\n },\n\n /**\n * Renders background, objects, overlay and controls.\n * @param {CanvasRenderingContext2D} ctx\n * @param {Array} objects to render\n * @return {fabric.Canvas} instance\n * @chainable\n */\n renderCanvas: function (ctx, objects) {\n if (this.destroyed) {\n return;\n }\n\n var v = this.viewportTransform,\n path = this.clipPath;\n this.calcViewportBoundaries();\n this.clearContext(ctx);\n ctx.imageSmoothingEnabled = this.imageSmoothingEnabled;\n // node-canvas\n ctx.patternQuality = 'best';\n this.fire('before:render', { ctx: ctx });\n this._renderBackground(ctx);\n\n ctx.save();\n //apply viewport transform once for all rendering process\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n this._renderObjects(ctx, objects);\n ctx.restore();\n if (!this.controlsAboveOverlay && this.interactive) {\n this.drawControls(ctx);\n }\n if (path) {\n path._set('canvas', this);\n // needed to setup a couple of variables\n path.shouldCache();\n path._transformDone = true;\n path.renderCache({ forClipping: true });\n this.drawClipPathOnCanvas(ctx);\n }\n this._renderOverlay(ctx);\n if (this.controlsAboveOverlay && this.interactive) {\n this.drawControls(ctx);\n }\n this.fire('after:render', { ctx: ctx });\n\n if (this.__cleanupTask) {\n this.__cleanupTask();\n this.__cleanupTask = undefined;\n }\n },\n\n /**\n * Paint the cached clipPath on the lowerCanvasEl\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawClipPathOnCanvas: function (ctx) {\n var v = this.viewportTransform,\n path = this.clipPath;\n ctx.save();\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n // DEBUG: uncomment this line, comment the following\n // ctx.globalAlpha = 0.4;\n ctx.globalCompositeOperation = 'destination-in';\n path.transform(ctx);\n ctx.scale(1 / path.zoomX, 1 / path.zoomY);\n ctx.drawImage(\n path._cacheCanvas,\n -path.cacheTranslationX,\n -path.cacheTranslationY\n );\n ctx.restore();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Array} objects to render\n */\n _renderObjects: function (ctx, objects) {\n var i, len;\n for (i = 0, len = objects.length; i < len; ++i) {\n objects[i] && objects[i].render(ctx);\n }\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {string} property 'background' or 'overlay'\n */\n _renderBackgroundOrOverlay: function (ctx, property) {\n var fill = this[property + 'Color'],\n object = this[property + 'Image'],\n v = this.viewportTransform,\n needsVpt = this[property + 'Vpt'];\n if (!fill && !object) {\n return;\n }\n if (fill) {\n ctx.save();\n ctx.beginPath();\n ctx.moveTo(0, 0);\n ctx.lineTo(this.width, 0);\n ctx.lineTo(this.width, this.height);\n ctx.lineTo(0, this.height);\n ctx.closePath();\n ctx.fillStyle = fill.toLive ? fill.toLive(ctx, this) : fill;\n if (needsVpt) {\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n }\n ctx.transform(1, 0, 0, 1, fill.offsetX || 0, fill.offsetY || 0);\n var m = fill.gradientTransform || fill.patternTransform;\n m && ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]);\n ctx.fill();\n ctx.restore();\n }\n if (object) {\n ctx.save();\n if (needsVpt) {\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n }\n object.render(ctx);\n ctx.restore();\n }\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderBackground: function (ctx) {\n this._renderBackgroundOrOverlay(ctx, 'background');\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderOverlay: function (ctx) {\n this._renderBackgroundOrOverlay(ctx, 'overlay');\n },\n\n /**\n * Returns coordinates of a center of canvas.\n * Returned value is an object with top and left properties\n * @return {Object} object with \"top\" and \"left\" number values\n * @deprecated migrate to `getCenterPoint`\n */\n getCenter: function () {\n return {\n top: this.height / 2,\n left: this.width / 2,\n };\n },\n\n /**\n * Returns coordinates of a center of canvas.\n * @return {Point}\n */\n getCenterPoint: function () {\n return new Point(this.width / 2, this.height / 2);\n },\n\n /**\n * Centers object horizontally in the canvas\n * @param {fabric.Object} object Object to center horizontally\n * @return {fabric.Canvas} thisArg\n */\n centerObjectH: function (object) {\n return this._centerObject(\n object,\n new Point(this.getCenterPoint().x, object.getCenterPoint().y)\n );\n },\n\n /**\n * Centers object vertically in the canvas\n * @param {fabric.Object} object Object to center vertically\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n centerObjectV: function (object) {\n return this._centerObject(\n object,\n new Point(object.getCenterPoint().x, this.getCenterPoint().y)\n );\n },\n\n /**\n * Centers object vertically and horizontally in the canvas\n * @param {fabric.Object} object Object to center vertically and horizontally\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n centerObject: function (object) {\n var center = this.getCenterPoint();\n return this._centerObject(object, center);\n },\n\n /**\n * Centers object vertically and horizontally in the viewport\n * @param {fabric.Object} object Object to center vertically and horizontally\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n viewportCenterObject: function (object) {\n var vpCenter = this.getVpCenter();\n return this._centerObject(object, vpCenter);\n },\n\n /**\n * Centers object horizontally in the viewport, object.top is unchanged\n * @param {fabric.Object} object Object to center vertically and horizontally\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n viewportCenterObjectH: function (object) {\n var vpCenter = this.getVpCenter();\n this._centerObject(\n object,\n new Point(vpCenter.x, object.getCenterPoint().y)\n );\n return this;\n },\n\n /**\n * Centers object Vertically in the viewport, object.top is unchanged\n * @param {fabric.Object} object Object to center vertically and horizontally\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n viewportCenterObjectV: function (object) {\n var vpCenter = this.getVpCenter();\n\n return this._centerObject(\n object,\n new Point(object.getCenterPoint().x, vpCenter.y)\n );\n },\n\n /**\n * Calculate the point in canvas that correspond to the center of actual viewport.\n * @return {Point} vpCenter, viewport center\n * @chainable\n */\n getVpCenter: function () {\n var center = this.getCenterPoint(),\n iVpt = invertTransform(this.viewportTransform);\n return transformPoint(center, iVpt);\n },\n\n /**\n * @private\n * @param {fabric.Object} object Object to center\n * @param {Point} center Center point\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n _centerObject: function (object, center) {\n object.setXY(center, 'center', 'center');\n object.setCoords();\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Returns dataless JSON representation of canvas\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {String} json string\n */\n toDatalessJSON: function (propertiesToInclude) {\n return this.toDatalessObject(propertiesToInclude);\n },\n\n /**\n * Returns object representation of canvas\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this._toObjectMethod('toObject', propertiesToInclude);\n },\n\n /**\n * Returns Object representation of canvas\n * this alias is provided because if you call JSON.stringify on an instance,\n * the toJSON object will be invoked if it exists.\n * Having a toJSON method means you can do JSON.stringify(myCanvas)\n * @return {Object} JSON compatible object\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization}\n * @see {@link http://jsfiddle.net/fabricjs/pec86/|jsFiddle demo}\n * @example JSON without additional properties\n * var json = canvas.toJSON();\n * @example JSON with additional properties included\n * var json = canvas.toJSON(['lockMovementX', 'lockMovementY', 'lockRotation', 'lockScalingX', 'lockScalingY']);\n * @example JSON without default values\n * var json = canvas.toJSON();\n */\n toJSON: function () {\n return this.toObject();\n },\n\n /**\n * Returns dataless object representation of canvas\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toDatalessObject: function (propertiesToInclude) {\n return this._toObjectMethod('toDatalessObject', propertiesToInclude);\n },\n\n /**\n * @private\n */\n _toObjectMethod: function (methodName, propertiesToInclude) {\n const clipPath = this.clipPath;\n const clipPathData =\n clipPath && !clipPath.excludeFromExport\n ? this._toObject(clipPath, methodName, propertiesToInclude)\n : null;\n return {\n version: VERSION,\n ...pick(this, propertiesToInclude),\n objects: this._objects\n .filter((object) => !object.excludeFromExport)\n .map((instance) =>\n this._toObject(instance, methodName, propertiesToInclude)\n ),\n ...this.__serializeBgOverlay(methodName, propertiesToInclude),\n ...(clipPathData ? { clipPath: clipPathData } : null),\n };\n },\n\n /**\n * @private\n */\n _toObject: function (instance, methodName, propertiesToInclude) {\n var originalValue;\n\n if (!this.includeDefaultValues) {\n originalValue = instance.includeDefaultValues;\n instance.includeDefaultValues = false;\n }\n\n var object = instance[methodName](propertiesToInclude);\n if (!this.includeDefaultValues) {\n instance.includeDefaultValues = originalValue;\n }\n return object;\n },\n\n /**\n * @private\n */\n __serializeBgOverlay: function (methodName, propertiesToInclude) {\n var data = {},\n bgImage = this.backgroundImage,\n overlayImage = this.overlayImage,\n bgColor = this.backgroundColor,\n overlayColor = this.overlayColor;\n\n if (bgColor && bgColor.toObject) {\n if (!bgColor.excludeFromExport) {\n data.background = bgColor.toObject(propertiesToInclude);\n }\n } else if (bgColor) {\n data.background = bgColor;\n }\n\n if (overlayColor && overlayColor.toObject) {\n if (!overlayColor.excludeFromExport) {\n data.overlay = overlayColor.toObject(propertiesToInclude);\n }\n } else if (overlayColor) {\n data.overlay = overlayColor;\n }\n\n if (bgImage && !bgImage.excludeFromExport) {\n data.backgroundImage = this._toObject(\n bgImage,\n methodName,\n propertiesToInclude\n );\n }\n if (overlayImage && !overlayImage.excludeFromExport) {\n data.overlayImage = this._toObject(\n overlayImage,\n methodName,\n propertiesToInclude\n );\n }\n\n return data;\n },\n\n /* _TO_SVG_START_ */\n /**\n * When true, getSvgTransform() will apply the StaticCanvas.viewportTransform to the SVG transformation. When true,\n * a zoomed canvas will then produce zoomed SVG output.\n * @type Boolean\n * @default\n */\n svgViewportTransformation: true,\n\n /**\n * Returns SVG representation of canvas\n * @function\n * @param {Object} [options] Options object for SVG output\n * @param {Boolean} [options.suppressPreamble=false] If true xml tag is not included\n * @param {Object} [options.viewBox] SVG viewbox object\n * @param {Number} [options.viewBox.x] x-coordinate of viewbox\n * @param {Number} [options.viewBox.y] y-coordinate of viewbox\n * @param {Number} [options.viewBox.width] Width of viewbox\n * @param {Number} [options.viewBox.height] Height of viewbox\n * @param {String} [options.encoding=UTF-8] Encoding of SVG output\n * @param {String} [options.width] desired width of svg with or without units\n * @param {String} [options.height] desired height of svg with or without units\n * @param {Function} [reviver] Method for further parsing of svg elements, called after each fabric object converted into svg representation.\n * @return {String} SVG string\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#serialization}\n * @see {@link http://jsfiddle.net/fabricjs/jQ3ZZ/|jsFiddle demo}\n * @example Normal SVG output\n * var svg = canvas.toSVG();\n * @example SVG output without preamble (without <?xml ../>)\n * var svg = canvas.toSVG({suppressPreamble: true});\n * @example SVG output with viewBox attribute\n * var svg = canvas.toSVG({\n * viewBox: {\n * x: 100,\n * y: 100,\n * width: 200,\n * height: 300\n * }\n * });\n * @example SVG output with different encoding (default: UTF-8)\n * var svg = canvas.toSVG({encoding: 'ISO-8859-1'});\n * @example Modify SVG output with reviver function\n * var svg = canvas.toSVG(null, function(svg) {\n * return svg.replace('stroke-dasharray: ; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; ', '');\n * });\n */\n toSVG: function (options, reviver) {\n options || (options = {});\n options.reviver = reviver;\n var markup = [];\n\n this._setSVGPreamble(markup, options);\n this._setSVGHeader(markup, options);\n if (this.clipPath) {\n markup.push(\n '\\n'\n );\n }\n this._setSVGBgOverlayColor(markup, 'background');\n this._setSVGBgOverlayImage(markup, 'backgroundImage', reviver);\n this._setSVGObjects(markup, reviver);\n if (this.clipPath) {\n markup.push('\\n');\n }\n this._setSVGBgOverlayColor(markup, 'overlay');\n this._setSVGBgOverlayImage(markup, 'overlayImage', reviver);\n\n markup.push('');\n\n return markup.join('');\n },\n\n /**\n * @private\n */\n _setSVGPreamble: function (markup, options) {\n if (options.suppressPreamble) {\n return;\n }\n markup.push(\n '\\n',\n '\\n'\n );\n },\n\n /**\n * @private\n */\n _setSVGHeader: function (markup, options) {\n var width = options.width || this.width,\n height = options.height || this.height,\n vpt,\n viewBox = 'viewBox=\"0 0 ' + this.width + ' ' + this.height + '\" ',\n NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n\n if (options.viewBox) {\n viewBox =\n 'viewBox=\"' +\n options.viewBox.x +\n ' ' +\n options.viewBox.y +\n ' ' +\n options.viewBox.width +\n ' ' +\n options.viewBox.height +\n '\" ';\n } else {\n if (this.svgViewportTransformation) {\n vpt = this.viewportTransform;\n viewBox =\n 'viewBox=\"' +\n toFixed(-vpt[4] / vpt[0], NUM_FRACTION_DIGITS) +\n ' ' +\n toFixed(-vpt[5] / vpt[3], NUM_FRACTION_DIGITS) +\n ' ' +\n toFixed(this.width / vpt[0], NUM_FRACTION_DIGITS) +\n ' ' +\n toFixed(this.height / vpt[3], NUM_FRACTION_DIGITS) +\n '\" ';\n }\n }\n\n markup.push(\n '\\n',\n 'Created with Fabric.js ',\n VERSION,\n '\\n',\n '\\n',\n this.createSVGFontFacesMarkup(),\n this.createSVGRefElementsMarkup(),\n this.createSVGClipPathMarkup(options),\n '\\n'\n );\n },\n\n createSVGClipPathMarkup: function (options) {\n var clipPath = this.clipPath;\n if (clipPath) {\n clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++;\n return (\n '\\n' +\n this.clipPath.toClipPathSVG(options.reviver) +\n '\\n'\n );\n }\n return '';\n },\n\n /**\n * Creates markup containing SVG referenced elements like patterns, gradients etc.\n * @return {String}\n */\n createSVGRefElementsMarkup: function () {\n var _this = this,\n markup = ['background', 'overlay'].map(function (prop) {\n var fill = _this[prop + 'Color'];\n if (fill && fill.toLive) {\n var shouldTransform = _this[prop + 'Vpt'],\n vpt = _this.viewportTransform,\n object = {\n width: _this.width / (shouldTransform ? vpt[0] : 1),\n height: _this.height / (shouldTransform ? vpt[3] : 1),\n };\n return fill.toSVG(object, {\n additionalTransform: shouldTransform\n ? fabric.util.matrixToSVG(vpt)\n : '',\n });\n }\n });\n return markup.join('');\n },\n\n /**\n * Creates markup containing SVG font faces,\n * font URLs for font faces must be collected by developers\n * and are not extracted from the DOM by fabricjs\n * @param {Array} objects Array of fabric objects\n * @return {String}\n */\n createSVGFontFacesMarkup: function () {\n var markup = '',\n fontList = {},\n obj,\n fontFamily,\n style,\n row,\n rowIndex,\n _char,\n charIndex,\n i,\n len,\n fontPaths = config.fontPaths,\n objects = [];\n\n this._objects.forEach(function add(object) {\n objects.push(object);\n if (object._objects) {\n object._objects.forEach(add);\n }\n });\n\n for (i = 0, len = objects.length; i < len; i++) {\n obj = objects[i];\n fontFamily = obj.fontFamily;\n if (\n obj.type.indexOf('text') === -1 ||\n fontList[fontFamily] ||\n !fontPaths[fontFamily]\n ) {\n continue;\n }\n fontList[fontFamily] = true;\n if (!obj.styles) {\n continue;\n }\n style = obj.styles;\n for (rowIndex in style) {\n row = style[rowIndex];\n for (charIndex in row) {\n _char = row[charIndex];\n fontFamily = _char.fontFamily;\n if (!fontList[fontFamily] && fontPaths[fontFamily]) {\n fontList[fontFamily] = true;\n }\n }\n }\n }\n\n for (var j in fontList) {\n markup += [\n '\\t\\t@font-face {\\n',\n \"\\t\\t\\tfont-family: '\",\n j,\n \"';\\n\",\n \"\\t\\t\\tsrc: url('\",\n fontPaths[j],\n \"');\\n\",\n '\\t\\t}\\n',\n ].join('');\n }\n\n if (markup) {\n markup = [\n '\\t\\n',\n ].join('');\n }\n\n return markup;\n },\n\n /**\n * @private\n */\n _setSVGObjects: function (markup, reviver) {\n var instance,\n i,\n len,\n objects = this._objects;\n for (i = 0, len = objects.length; i < len; i++) {\n instance = objects[i];\n if (instance.excludeFromExport) {\n continue;\n }\n this._setSVGObject(markup, instance, reviver);\n }\n },\n\n /**\n * @private\n */\n _setSVGObject: function (markup, instance, reviver) {\n markup.push(instance.toSVG(reviver));\n },\n\n /**\n * @private\n */\n _setSVGBgOverlayImage: function (markup, property, reviver) {\n if (\n this[property] &&\n !this[property].excludeFromExport &&\n this[property].toSVG\n ) {\n markup.push(this[property].toSVG(reviver));\n }\n },\n\n /**\n * @private\n */\n _setSVGBgOverlayColor: function (markup, property) {\n var filler = this[property + 'Color'],\n vpt = this.viewportTransform,\n finalWidth = this.width,\n finalHeight = this.height;\n if (!filler) {\n return;\n }\n if (filler.toLive) {\n var repeat = filler.repeat,\n iVpt = fabric.util.invertTransform(vpt),\n shouldInvert = this[property + 'Vpt'],\n additionalTransform = shouldInvert\n ? fabric.util.matrixToSVG(iVpt)\n : '';\n markup.push(\n '\\n'\n );\n } else {\n markup.push(\n '\\n'\n );\n }\n },\n /* _TO_SVG_END_ */\n\n /**\n * Moves an object or the objects of a multiple selection\n * to the bottom of the stack of drawn objects\n * @param {fabric.Object} object Object to send to back\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n sendToBack: function (object) {\n if (!object) {\n return this;\n }\n var activeSelection = this._activeObject,\n i,\n obj,\n objs;\n if (object === activeSelection && object.type === 'activeSelection') {\n objs = activeSelection._objects;\n for (i = objs.length; i--; ) {\n obj = objs[i];\n removeFromArray(this._objects, obj);\n this._objects.unshift(obj);\n }\n } else {\n removeFromArray(this._objects, object);\n this._objects.unshift(object);\n }\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Moves an object or the objects of a multiple selection\n * to the top of the stack of drawn objects\n * @param {fabric.Object} object Object to send\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n bringToFront: function (object) {\n if (!object) {\n return this;\n }\n var activeSelection = this._activeObject,\n i,\n obj,\n objs;\n if (object === activeSelection && object.type === 'activeSelection') {\n objs = activeSelection._objects;\n for (i = 0; i < objs.length; i++) {\n obj = objs[i];\n removeFromArray(this._objects, obj);\n this._objects.push(obj);\n }\n } else {\n removeFromArray(this._objects, object);\n this._objects.push(object);\n }\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * Moves an object or a selection down in stack of drawn objects\n * An optional parameter, intersecting allows to move the object in behind\n * the first intersecting object. Where intersection is calculated with\n * bounding box. If no intersection is found, there will not be change in the\n * stack.\n * @param {fabric.Object} object Object to send\n * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n sendBackwards: function (object, intersecting) {\n if (!object) {\n return this;\n }\n var activeSelection = this._activeObject,\n i,\n obj,\n idx,\n newIdx,\n objs,\n objsMoved = 0;\n\n if (object === activeSelection && object.type === 'activeSelection') {\n objs = activeSelection._objects;\n for (i = 0; i < objs.length; i++) {\n obj = objs[i];\n idx = this._objects.indexOf(obj);\n if (idx > 0 + objsMoved) {\n newIdx = idx - 1;\n removeFromArray(this._objects, obj);\n this._objects.splice(newIdx, 0, obj);\n }\n objsMoved++;\n }\n } else {\n idx = this._objects.indexOf(object);\n if (idx !== 0) {\n // if object is not on the bottom of stack\n newIdx = this._findNewLowerIndex(object, idx, intersecting);\n removeFromArray(this._objects, object);\n this._objects.splice(newIdx, 0, object);\n }\n }\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * @private\n */\n _findNewLowerIndex: function (object, idx, intersecting) {\n var newIdx, i;\n\n if (intersecting) {\n newIdx = idx;\n\n // traverse down the stack looking for the nearest intersecting object\n for (i = idx - 1; i >= 0; --i) {\n var isIntersecting =\n object.intersectsWithObject(this._objects[i]) ||\n object.isContainedWithinObject(this._objects[i]) ||\n this._objects[i].isContainedWithinObject(object);\n\n if (isIntersecting) {\n newIdx = i;\n break;\n }\n }\n } else {\n newIdx = idx - 1;\n }\n\n return newIdx;\n },\n\n /**\n * Moves an object or a selection up in stack of drawn objects\n * An optional parameter, intersecting allows to move the object in front\n * of the first intersecting object. Where intersection is calculated with\n * bounding box. If no intersection is found, there will not be change in the\n * stack.\n * @param {fabric.Object} object Object to send\n * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n bringForward: function (object, intersecting) {\n if (!object) {\n return this;\n }\n var activeSelection = this._activeObject,\n i,\n obj,\n idx,\n newIdx,\n objs,\n objsMoved = 0;\n\n if (object === activeSelection && object.type === 'activeSelection') {\n objs = activeSelection._objects;\n for (i = objs.length; i--; ) {\n obj = objs[i];\n idx = this._objects.indexOf(obj);\n if (idx < this._objects.length - 1 - objsMoved) {\n newIdx = idx + 1;\n removeFromArray(this._objects, obj);\n this._objects.splice(newIdx, 0, obj);\n }\n objsMoved++;\n }\n } else {\n idx = this._objects.indexOf(object);\n if (idx !== this._objects.length - 1) {\n // if object is not on top of stack (last item in an array)\n newIdx = this._findNewUpperIndex(object, idx, intersecting);\n removeFromArray(this._objects, object);\n this._objects.splice(newIdx, 0, object);\n }\n }\n this.renderOnAddRemove && this.requestRenderAll();\n return this;\n },\n\n /**\n * @private\n */\n _findNewUpperIndex: function (object, idx, intersecting) {\n var newIdx, i, len;\n\n if (intersecting) {\n newIdx = idx;\n\n // traverse up the stack looking for the nearest intersecting object\n for (i = idx + 1, len = this._objects.length; i < len; ++i) {\n var isIntersecting =\n object.intersectsWithObject(this._objects[i]) ||\n object.isContainedWithinObject(this._objects[i]) ||\n this._objects[i].isContainedWithinObject(object);\n\n if (isIntersecting) {\n newIdx = i;\n break;\n }\n }\n } else {\n newIdx = idx + 1;\n }\n\n return newIdx;\n },\n\n /**\n * Moves an object to specified level in stack of drawn objects\n * @param {fabric.Object} object Object to send\n * @param {Number} index Position to move to\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n moveTo: function (object, index) {\n removeFromArray(this._objects, object);\n this._objects.splice(index, 0, object);\n return this.renderOnAddRemove && this.requestRenderAll();\n },\n\n /**\n * Waits until rendering has settled to destroy the canvas\n * @returns {Promise} a promise resolving to `true` once the canvas has been destroyed or to `false` if the canvas has was already destroyed\n * @throws if aborted by a consequent call\n */\n dispose: function () {\n this.disposed = true;\n return new Promise((resolve, reject) => {\n const task = () => {\n this.destroy();\n resolve(true);\n };\n task.kill = reject;\n if (this.__cleanupTask) {\n this.__cleanupTask.kill('aborted');\n }\n\n if (this.destroyed) {\n resolve(false);\n } else if (this.nextRenderHandle) {\n this.__cleanupTask = task;\n } else {\n task();\n }\n });\n },\n\n /**\n * Clears the canvas element, disposes objects and frees resources\n *\n * **CAUTION**:\n *\n * This method is **UNSAFE**.\n * You may encounter a race condition using it if there's a requested render.\n * Call this method only if you are sure rendering has settled.\n * Consider using {@link dispose} as it is **SAFE**\n *\n * @private\n */\n destroy: function () {\n this.destroyed = true;\n this.cancelRequestedRender();\n this.forEachObject(function (object) {\n object.dispose && object.dispose();\n });\n this._objects = [];\n if (this.backgroundImage && this.backgroundImage.dispose) {\n this.backgroundImage.dispose();\n }\n this.backgroundImage = null;\n if (this.overlayImage && this.overlayImage.dispose) {\n this.overlayImage.dispose();\n }\n this.overlayImage = null;\n this._iTextInstances = null;\n this.contextContainer = null;\n // restore canvas style and attributes\n this.lowerCanvasEl.classList.remove('lower-canvas');\n this.lowerCanvasEl.removeAttribute('data-fabric');\n if (this.interactive) {\n this.lowerCanvasEl.style.cssText = this._originalCanvasStyle;\n delete this._originalCanvasStyle;\n }\n // restore canvas size to original size in case retina scaling was applied\n this.lowerCanvasEl.setAttribute('width', this.width);\n this.lowerCanvasEl.setAttribute('height', this.height);\n fabric.util.cleanUpJsdomNode(this.lowerCanvasEl);\n this.lowerCanvasEl = undefined;\n },\n\n /**\n * Returns a string representation of an instance\n * @return {String} string representation of an instance\n */\n toString: function () {\n return (\n '#'\n );\n },\n }\n );\n\n extend(fabric.StaticCanvas.prototype, fabric.Observable);\n extend(fabric.StaticCanvas.prototype, fabric.DataURLExporter);\n\n extend(\n fabric.StaticCanvas,\n /** @lends fabric.StaticCanvas */ {\n /**\n * @static\n * @type String\n * @default\n */\n EMPTY_JSON: '{\"objects\": [], \"background\": \"white\"}',\n\n /**\n * Provides a way to check support of some of the canvas methods\n * (either those of HTMLCanvasElement itself, or rendering context)\n *\n * @param {String} methodName Method to check support for;\n * Could be one of \"setLineDash\"\n * @return {Boolean | null} `true` if method is supported (or at least exists),\n * `null` if canvas element or context can not be initialized\n */\n supports: function (methodName) {\n var el = createCanvasElement();\n\n if (!el || !el.getContext) {\n return null;\n }\n\n var ctx = el.getContext('2d');\n if (!ctx) {\n return null;\n }\n\n switch (methodName) {\n case 'setLineDash':\n return typeof ctx.setLineDash !== 'undefined';\n\n default:\n return null;\n }\n },\n }\n );\n\n if (fabric.isLikelyNode) {\n fabric.StaticCanvas.prototype.createPNGStream = function () {\n var impl = getNodeCanvas(this.lowerCanvasEl);\n return impl && impl.createPNGStream();\n };\n fabric.StaticCanvas.prototype.createJPEGStream = function (opts) {\n var impl = getNodeCanvas(this.lowerCanvasEl);\n return impl && impl.createJPEGStream(opts);\n };\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from './point.class';\n\n(function (global) {\n var fabric = global.fabric,\n getPointer = fabric.util.getPointer,\n degreesToRadians = fabric.util.degreesToRadians,\n isTouchEvent = fabric.util.isTouchEvent;\n\n /**\n * Canvas class\n * @class fabric.Canvas\n * @extends fabric.StaticCanvas\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#canvas}\n * @see {@link fabric.Canvas#initialize} for constructor definition\n *\n * @fires object:modified at the end of a transform or any change when statefull is true\n * @fires object:rotating while an object is being rotated from the control\n * @fires object:scaling while an object is being scaled by controls\n * @fires object:moving while an object is being dragged\n * @fires object:skewing while an object is being skewed from the controls\n *\n * @fires before:transform before a transform is is started\n * @fires before:selection:cleared\n * @fires selection:cleared\n * @fires selection:updated\n * @fires selection:created\n *\n * @fires path:created after a drawing operation ends and the path is added\n * @fires mouse:down\n * @fires mouse:move\n * @fires mouse:up\n * @fires mouse:down:before on mouse down, before the inner fabric logic runs\n * @fires mouse:move:before on mouse move, before the inner fabric logic runs\n * @fires mouse:up:before on mouse up, before the inner fabric logic runs\n * @fires mouse:over\n * @fires mouse:out\n * @fires mouse:dblclick whenever a native dbl click event fires on the canvas.\n *\n * @fires dragover\n * @fires dragenter\n * @fires dragleave\n * @fires drag:enter object drag enter\n * @fires drag:leave object drag leave\n * @fires drop:before before drop event. Prepare for the drop event (same native event).\n * @fires drop\n * @fires drop:after after drop event. Run logic on canvas after event has been accepted/declined (same native event).\n * @example\n * let a: fabric.Object, b: fabric.Object;\n * let flag = false;\n * canvas.add(a, b);\n * a.on('drop:before', opt => {\n * // we want a to accept the drop even though it's below b in the stack\n * flag = this.canDrop(opt.e);\n * });\n * b.canDrop = function(e) {\n * !flag && this.callSuper('canDrop', e);\n * }\n * b.on('dragover', opt => b.set('fill', opt.dropTarget === b ? 'pink' : 'black'));\n * a.on('drop', opt => {\n * opt.e.defaultPrevented // drop occured\n * opt.didDrop // drop occured on canvas\n * opt.target // drop target\n * opt.target !== a && a.set('text', 'I lost');\n * });\n * canvas.on('drop:after', opt => {\n * // inform user who won\n * if(!opt.e.defaultPrevented) {\n * // no winners\n * }\n * else if(!opt.didDrop) {\n * // my objects didn't win, some other lucky object\n * }\n * else {\n * // we have a winner it's opt.target!!\n * }\n * })\n *\n * @fires after:render at the end of the render process, receives the context in the callback\n * @fires before:render at start the render process, receives the context in the callback\n *\n * @fires contextmenu:before\n * @fires contextmenu\n * @example\n * let handler;\n * targets.forEach(target => {\n * target.on('contextmenu:before', opt => {\n * // decide which target should handle the event before canvas hijacks it\n * if (someCaseHappens && opt.targets.includes(target)) {\n * handler = target;\n * }\n * });\n * target.on('contextmenu', opt => {\n * // do something fantastic\n * });\n * });\n * canvas.on('contextmenu', opt => {\n * if (!handler) {\n * // no one takes responsibility, it's always left to me\n * // let's show them how it's done!\n * }\n * });\n *\n */\n fabric.Canvas = fabric.util.createClass(\n fabric.StaticCanvas,\n /** @lends fabric.Canvas.prototype */ {\n /**\n * Constructor\n * @param {HTMLElement | String} el <canvas> element to initialize instance on\n * @param {Object} [options] Options object\n * @return {Object} thisArg\n */\n initialize: function (el, options) {\n options || (options = {});\n this.renderAndResetBound = this.renderAndReset.bind(this);\n this.requestRenderAllBound = this.requestRenderAll.bind(this);\n this._initStatic(el, options);\n this._initInteractive();\n this._createCacheCanvas();\n },\n\n /**\n * When true, objects can be transformed by one side (unproportionally)\n * when dragged on the corners that normally would not do that.\n * @type Boolean\n * @default\n * @since fabric 4.0 // changed name and default value\n */\n uniformScaling: true,\n\n /**\n * Indicates which key switches uniform scaling.\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * If `null` or 'none' or any other string that is not a modifier key\n * feature is disabled.\n * totally wrong named. this sounds like `uniform scaling`\n * if Canvas.uniformScaling is true, pressing this will set it to false\n * and viceversa.\n * @since 1.6.2\n * @type String\n * @default\n */\n uniScaleKey: 'shiftKey',\n\n /**\n * When true, objects use center point as the origin of scale transformation.\n * Backwards incompatibility note: This property replaces \"centerTransform\" (Boolean).\n * @since 1.3.4\n * @type Boolean\n * @default\n */\n centeredScaling: false,\n\n /**\n * When true, objects use center point as the origin of rotate transformation.\n * Backwards incompatibility note: This property replaces \"centerTransform\" (Boolean).\n * @since 1.3.4\n * @type Boolean\n * @default\n */\n centeredRotation: false,\n\n /**\n * Indicates which key enable centered Transform\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * If `null` or 'none' or any other string that is not a modifier key\n * feature is disabled feature disabled.\n * @since 1.6.2\n * @type String\n * @default\n */\n centeredKey: 'altKey',\n\n /**\n * Indicates which key enable alternate action on corner\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * If `null` or 'none' or any other string that is not a modifier key\n * feature is disabled feature disabled.\n * @since 1.6.2\n * @type String\n * @default\n */\n altActionKey: 'shiftKey',\n\n /**\n * Indicates that canvas is interactive. This property should not be changed.\n * @type Boolean\n * @default\n */\n interactive: true,\n\n /**\n * Indicates whether group selection should be enabled\n * @type Boolean\n * @default\n */\n selection: true,\n\n /**\n * Indicates which key or keys enable multiple click selection\n * Pass value as a string or array of strings\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * If `null` or empty or containing any other string that is not a modifier key\n * feature is disabled.\n * @since 1.6.2\n * @type String|Array\n * @default\n */\n selectionKey: 'shiftKey',\n\n /**\n * Indicates which key enable alternative selection\n * in case of target overlapping with active object\n * values: 'altKey', 'shiftKey', 'ctrlKey'.\n * For a series of reason that come from the general expectations on how\n * things should work, this feature works only for preserveObjectStacking true.\n * If `null` or 'none' or any other string that is not a modifier key\n * feature is disabled.\n * @since 1.6.5\n * @type null|String\n * @default\n */\n altSelectionKey: null,\n\n /**\n * Color of selection\n * @type String\n * @default\n */\n selectionColor: 'rgba(100, 100, 255, 0.3)', // blue\n\n /**\n * Default dash array pattern\n * If not empty the selection border is dashed\n * @type Array\n */\n selectionDashArray: [],\n\n /**\n * Color of the border of selection (usually slightly darker than color of selection itself)\n * @type String\n * @default\n */\n selectionBorderColor: 'rgba(255, 255, 255, 0.3)',\n\n /**\n * Width of a line used in object/group selection\n * @type Number\n * @default\n */\n selectionLineWidth: 1,\n\n /**\n * Select only shapes that are fully contained in the dragged selection rectangle.\n * @type Boolean\n * @default\n */\n selectionFullyContained: false,\n\n /**\n * Default cursor value used when hovering over an object on canvas\n * @type String\n * @default\n */\n hoverCursor: 'move',\n\n /**\n * Default cursor value used when moving an object on canvas\n * @type String\n * @default\n */\n moveCursor: 'move',\n\n /**\n * Default cursor value used for the entire canvas\n * @type String\n * @default\n */\n defaultCursor: 'default',\n\n /**\n * Cursor value used during free drawing\n * @type String\n * @default\n */\n freeDrawingCursor: 'crosshair',\n\n /**\n * Cursor value used for disabled elements ( corners with disabled action )\n * @type String\n * @since 2.0.0\n * @default\n */\n notAllowedCursor: 'not-allowed',\n\n /**\n * Default element class that's given to wrapper (div) element of canvas\n * @type String\n * @default\n */\n containerClass: 'canvas-container',\n\n /**\n * When true, object detection happens on per-pixel basis rather than on per-bounding-box\n * @type Boolean\n * @default\n */\n perPixelTargetFind: false,\n\n /**\n * Number of pixels around target pixel to tolerate (consider active) during object detection\n * @type Number\n * @default\n */\n targetFindTolerance: 0,\n\n /**\n * When true, target detection is skipped. Target detection will return always undefined.\n * click selection won't work anymore, events will fire with no targets.\n * if something is selected before setting it to true, it will be deselected at the first click.\n * area selection will still work. check the `selection` property too.\n * if you deactivate both, you should look into staticCanvas.\n * @type Boolean\n * @default\n */\n skipTargetFind: false,\n\n /**\n * When true, mouse events on canvas (mousedown/mousemove/mouseup) result in free drawing.\n * After mousedown, mousemove creates a shape,\n * and then mouseup finalizes it and adds an instance of `fabric.Path` onto canvas.\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-4#free_drawing}\n * @type Boolean\n * @default\n */\n isDrawingMode: false,\n\n /**\n * Indicates whether objects should remain in current stack position when selected.\n * When false objects are brought to top and rendered as part of the selection group\n * @type Boolean\n * @default\n */\n preserveObjectStacking: false,\n\n /**\n * Indicates the angle that an object will lock to while rotating.\n * @type Number\n * @since 1.6.7\n * @default\n */\n snapAngle: 0,\n\n /**\n * Indicates the distance from the snapAngle the rotation will lock to the snapAngle.\n * When `null`, the snapThreshold will default to the snapAngle.\n * @type null|Number\n * @since 1.6.7\n * @default\n */\n snapThreshold: null,\n\n /**\n * Indicates if the right click on canvas can output the context menu or not\n * @type Boolean\n * @since 1.6.5\n * @default\n */\n stopContextMenu: false,\n\n /**\n * Indicates if the canvas can fire right click events\n * @type Boolean\n * @since 1.6.5\n * @default\n */\n fireRightClick: false,\n\n /**\n * Indicates if the canvas can fire middle click events\n * @type Boolean\n * @since 1.7.8\n * @default\n */\n fireMiddleClick: false,\n\n /**\n * Keep track of the subTargets for Mouse Events\n * @type fabric.Object[]\n */\n targets: [],\n\n /**\n * When the option is enabled, PointerEvent is used instead of MouseEvent.\n * @type Boolean\n * @default\n */\n enablePointerEvents: false,\n\n /**\n * Keep track of the hovered target\n * @type fabric.Object\n * @private\n */\n _hoveredTarget: null,\n\n /**\n * hold the list of nested targets hovered\n * @type fabric.Object[]\n * @private\n */\n _hoveredTargets: [],\n\n /**\n * hold the list of objects to render\n * @type fabric.Object[]\n * @private\n */\n _objectsToRender: undefined,\n\n /**\n * @private\n */\n _initInteractive: function () {\n this._currentTransform = null;\n this._groupSelector = null;\n this._initWrapperElement();\n this._createUpperCanvas();\n this._initEventListeners();\n\n this._initRetinaScaling();\n\n this.freeDrawingBrush =\n fabric.PencilBrush && new fabric.PencilBrush(this);\n\n this.calcOffset();\n },\n\n /**\n * @private\n * @param {fabric.Object} obj Object that was added\n */\n _onObjectAdded: function (obj) {\n this._objectsToRender = undefined;\n this.callSuper('_onObjectAdded', obj);\n },\n\n /**\n * @private\n * @param {fabric.Object} obj Object that was removed\n */\n _onObjectRemoved: function (obj) {\n this._objectsToRender = undefined;\n // removing active object should fire \"selection:cleared\" events\n if (obj === this._activeObject) {\n this.fire('before:selection:cleared', { target: obj });\n this._discardActiveObject();\n this.fire('selection:cleared', { target: obj });\n obj.fire('deselected');\n }\n if (obj === this._hoveredTarget) {\n this._hoveredTarget = null;\n this._hoveredTargets = [];\n }\n this.callSuper('_onObjectRemoved', obj);\n },\n\n /**\n * Divides objects in two groups, one to render immediately\n * and one to render as activeGroup.\n * @return {Array} objects to render immediately and pushes the other in the activeGroup.\n */\n _chooseObjectsToRender: function () {\n var activeObjects = this.getActiveObjects(),\n object,\n objsToRender,\n activeGroupObjects;\n\n if (!this.preserveObjectStacking && activeObjects.length > 1) {\n objsToRender = [];\n activeGroupObjects = [];\n for (var i = 0, length = this._objects.length; i < length; i++) {\n object = this._objects[i];\n if (activeObjects.indexOf(object) === -1) {\n objsToRender.push(object);\n } else {\n activeGroupObjects.push(object);\n }\n }\n if (activeObjects.length > 1) {\n this._activeObject._objects = activeGroupObjects;\n }\n objsToRender.push.apply(objsToRender, activeGroupObjects);\n }\n // in case a single object is selected render it's entire parent above the other objects\n else if (!this.preserveObjectStacking && activeObjects.length === 1) {\n var target = activeObjects[0],\n ancestors = target.getAncestors(true);\n var topAncestor = ancestors.length === 0 ? target : ancestors.pop();\n objsToRender = this._objects.slice();\n var index = objsToRender.indexOf(topAncestor);\n index > -1 &&\n objsToRender.splice(objsToRender.indexOf(topAncestor), 1);\n objsToRender.push(topAncestor);\n } else {\n objsToRender = this._objects;\n }\n return objsToRender;\n },\n\n /**\n * Renders both the top canvas and the secondary container canvas.\n * @return {fabric.Canvas} instance\n * @chainable\n */\n renderAll: function () {\n this.cancelRequestedRender();\n if (this.destroyed) {\n return;\n }\n if (\n this.contextTopDirty &&\n !this._groupSelector &&\n !this.isDrawingMode\n ) {\n this.clearContext(this.contextTop);\n this.contextTopDirty = false;\n }\n if (this.hasLostContext) {\n this.renderTopLayer(this.contextTop);\n this.hasLostContext = false;\n }\n !this._objectsToRender &&\n (this._objectsToRender = this._chooseObjectsToRender());\n this.renderCanvas(this.contextContainer, this._objectsToRender);\n return this;\n },\n\n renderTopLayer: function (ctx) {\n ctx.save();\n if (this.isDrawingMode && this._isCurrentlyDrawing) {\n this.freeDrawingBrush && this.freeDrawingBrush._render();\n this.contextTopDirty = true;\n }\n // we render the top context - last object\n if (this.selection && this._groupSelector) {\n this._drawSelection(ctx);\n this.contextTopDirty = true;\n }\n ctx.restore();\n },\n\n /**\n * Method to render only the top canvas.\n * Also used to render the group selection box.\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n renderTop: function () {\n var ctx = this.contextTop;\n this.clearContext(ctx);\n this.renderTopLayer(ctx);\n this.fire('after:render');\n return this;\n },\n\n /**\n * @private\n */\n _normalizePointer: function (object, pointer) {\n var m = object.calcTransformMatrix(),\n invertedM = fabric.util.invertTransform(m),\n vptPointer = this.restorePointerVpt(pointer);\n return fabric.util.transformPoint(vptPointer, invertedM);\n },\n\n /**\n * Returns true if object is transparent at a certain location\n * @param {fabric.Object} target Object to check\n * @param {Number} x Left coordinate\n * @param {Number} y Top coordinate\n * @return {Boolean}\n */\n isTargetTransparent: function (target, x, y) {\n // in case the target is the activeObject, we cannot execute this optimization\n // because we need to draw controls too.\n if (\n target.shouldCache() &&\n target._cacheCanvas &&\n target !== this._activeObject\n ) {\n var normalizedPointer = this._normalizePointer(target, {\n x: x,\n y: y,\n }),\n targetRelativeX = Math.max(\n target.cacheTranslationX + normalizedPointer.x * target.zoomX,\n 0\n ),\n targetRelativeY = Math.max(\n target.cacheTranslationY + normalizedPointer.y * target.zoomY,\n 0\n );\n\n var isTransparent = fabric.util.isTransparent(\n target._cacheContext,\n Math.round(targetRelativeX),\n Math.round(targetRelativeY),\n this.targetFindTolerance\n );\n\n return isTransparent;\n }\n\n var ctx = this.contextCache,\n originalColor = target.selectionBackgroundColor,\n v = this.viewportTransform;\n\n target.selectionBackgroundColor = '';\n\n this.clearContext(ctx);\n\n ctx.save();\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n target.render(ctx);\n ctx.restore();\n\n target.selectionBackgroundColor = originalColor;\n\n var isTransparent = fabric.util.isTransparent(\n ctx,\n x,\n y,\n this.targetFindTolerance\n );\n\n return isTransparent;\n },\n\n /**\n * takes an event and determines if selection key has been pressed\n * @private\n * @param {Event} e Event object\n */\n _isSelectionKeyPressed: function (e) {\n var selectionKeyPressed = false;\n\n if (Array.isArray(this.selectionKey)) {\n selectionKeyPressed = !!this.selectionKey.find(function (key) {\n return e[key] === true;\n });\n } else {\n selectionKeyPressed = e[this.selectionKey];\n }\n\n return selectionKeyPressed;\n },\n\n /**\n * @private\n * @param {Event} e Event object\n * @param {fabric.Object} target\n */\n _shouldClearSelection: function (e, target) {\n var activeObjects = this.getActiveObjects(),\n activeObject = this._activeObject;\n\n return (\n !target ||\n (target &&\n activeObject &&\n activeObjects.length > 1 &&\n activeObjects.indexOf(target) === -1 &&\n activeObject !== target &&\n !this._isSelectionKeyPressed(e)) ||\n (target && !target.evented) ||\n (target &&\n !target.selectable &&\n activeObject &&\n activeObject !== target)\n );\n },\n\n /**\n * centeredScaling from object can't override centeredScaling from canvas.\n * this should be fixed, since object setting should take precedence over canvas.\n * also this should be something that will be migrated in the control properties.\n * as ability to define the origin of the transformation that the control provide.\n * @private\n * @param {fabric.Object} target\n * @param {String} action\n * @param {Boolean} altKey\n */\n _shouldCenterTransform: function (target, action, altKey) {\n if (!target) {\n return;\n }\n\n var centerTransform;\n\n if (\n action === 'scale' ||\n action === 'scaleX' ||\n action === 'scaleY' ||\n action === 'resizing'\n ) {\n centerTransform = this.centeredScaling || target.centeredScaling;\n } else if (action === 'rotate') {\n centerTransform = this.centeredRotation || target.centeredRotation;\n }\n\n return centerTransform ? !altKey : altKey;\n },\n\n /**\n * should disappear before release 4.0\n * @private\n */\n _getOriginFromCorner: function (target, corner) {\n var origin = {\n x: target.originX,\n y: target.originY,\n };\n\n if (corner === 'ml' || corner === 'tl' || corner === 'bl') {\n origin.x = 'right';\n } else if (corner === 'mr' || corner === 'tr' || corner === 'br') {\n origin.x = 'left';\n }\n\n if (corner === 'tl' || corner === 'mt' || corner === 'tr') {\n origin.y = 'bottom';\n } else if (corner === 'bl' || corner === 'mb' || corner === 'br') {\n origin.y = 'top';\n }\n return origin;\n },\n\n /**\n * @private\n * @param {Boolean} alreadySelected true if target is already selected\n * @param {String} corner a string representing the corner ml, mr, tl ...\n * @param {Event} e Event object\n * @param {fabric.Object} [target] inserted back to help overriding. Unused\n */\n _getActionFromCorner: function (alreadySelected, corner, e, target) {\n if (!corner || !alreadySelected) {\n return 'drag';\n }\n var control = target.controls[corner];\n return control.getActionName(e, control, target);\n },\n\n /**\n * @private\n * @param {Event} e Event object\n * @param {fabric.Object} target\n */\n _setupCurrentTransform: function (e, target, alreadySelected) {\n if (!target) {\n return;\n }\n var pointer = this.getPointer(e);\n if (target.group) {\n // transform pointer to target's containing coordinate plane\n pointer = fabric.util.transformPoint(\n pointer,\n fabric.util.invertTransform(target.group.calcTransformMatrix())\n );\n }\n var corner = target.__corner,\n control = target.controls[corner],\n actionHandler =\n alreadySelected && corner\n ? control.getActionHandler(e, target, control)\n : fabric.controlsUtils.dragHandler,\n action = this._getActionFromCorner(\n alreadySelected,\n corner,\n e,\n target\n ),\n origin = this._getOriginFromCorner(target, corner),\n altKey = e[this.centeredKey],\n /**\n * relative to target's containing coordinate plane\n * both agree on every point\n **/\n transform = {\n target: target,\n action: action,\n actionHandler: actionHandler,\n corner: corner,\n scaleX: target.scaleX,\n scaleY: target.scaleY,\n skewX: target.skewX,\n skewY: target.skewY,\n offsetX: pointer.x - target.left,\n offsetY: pointer.y - target.top,\n originX: origin.x,\n originY: origin.y,\n ex: pointer.x,\n ey: pointer.y,\n lastX: pointer.x,\n lastY: pointer.y,\n theta: degreesToRadians(target.angle),\n width: target.width * target.scaleX,\n shiftKey: e.shiftKey,\n altKey: altKey,\n original: fabric.util.saveObjectTransform(target),\n };\n\n if (this._shouldCenterTransform(target, action, altKey)) {\n transform.originX = 'center';\n transform.originY = 'center';\n }\n transform.original.originX = origin.x;\n transform.original.originY = origin.y;\n this._currentTransform = transform;\n this._beforeTransform(e);\n },\n\n /**\n * Set the cursor type of the canvas element\n * @param {String} value Cursor type of the canvas element.\n * @see http://www.w3.org/TR/css3-ui/#cursor\n */\n setCursor: function (value) {\n this.upperCanvasEl.style.cursor = value;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx to draw the selection on\n */\n _drawSelection: function (ctx) {\n var selector = this._groupSelector,\n viewportStart = new Point(selector.ex, selector.ey),\n start = fabric.util.transformPoint(\n viewportStart,\n this.viewportTransform\n ),\n viewportExtent = new Point(\n selector.ex + selector.left,\n selector.ey + selector.top\n ),\n extent = fabric.util.transformPoint(\n viewportExtent,\n this.viewportTransform\n ),\n minX = Math.min(start.x, extent.x),\n minY = Math.min(start.y, extent.y),\n maxX = Math.max(start.x, extent.x),\n maxY = Math.max(start.y, extent.y),\n strokeOffset = this.selectionLineWidth / 2;\n\n if (this.selectionColor) {\n ctx.fillStyle = this.selectionColor;\n ctx.fillRect(minX, minY, maxX - minX, maxY - minY);\n }\n\n if (!this.selectionLineWidth || !this.selectionBorderColor) {\n return;\n }\n ctx.lineWidth = this.selectionLineWidth;\n ctx.strokeStyle = this.selectionBorderColor;\n\n minX += strokeOffset;\n minY += strokeOffset;\n maxX -= strokeOffset;\n maxY -= strokeOffset;\n // selection border\n fabric.Object.prototype._setLineDash.call(\n this,\n ctx,\n this.selectionDashArray\n );\n ctx.strokeRect(minX, minY, maxX - minX, maxY - minY);\n },\n\n /**\n * Method that determines what object we are clicking on\n * the skipGroup parameter is for internal use, is needed for shift+click action\n * 11/09/2018 TODO: would be cool if findTarget could discern between being a full target\n * or the outside part of the corner.\n * @param {Event} e mouse event\n * @param {Boolean} skipGroup when true, activeGroup is skipped and only objects are traversed through\n * @return {fabric.Object} the target found\n */\n findTarget: function (e, skipGroup) {\n if (this.skipTargetFind) {\n return;\n }\n\n var ignoreZoom = true,\n pointer = this.getPointer(e, ignoreZoom),\n activeObject = this._activeObject,\n aObjects = this.getActiveObjects(),\n activeTarget,\n activeTargetSubs,\n isTouch = isTouchEvent(e),\n shouldLookForActive =\n (aObjects.length > 1 && !skipGroup) || aObjects.length === 1;\n\n // first check current group (if one exists)\n // active group does not check sub targets like normal groups.\n // if active group just exits.\n this.targets = [];\n\n // if we hit the corner of an activeObject, let's return that.\n if (\n shouldLookForActive &&\n activeObject._findTargetCorner(pointer, isTouch)\n ) {\n return activeObject;\n }\n if (\n aObjects.length > 1 &&\n activeObject.type === 'activeSelection' &&\n !skipGroup &&\n this.searchPossibleTargets([activeObject], pointer)\n ) {\n return activeObject;\n }\n if (\n aObjects.length === 1 &&\n activeObject === this.searchPossibleTargets([activeObject], pointer)\n ) {\n if (!this.preserveObjectStacking) {\n return activeObject;\n } else {\n activeTarget = activeObject;\n activeTargetSubs = this.targets;\n this.targets = [];\n }\n }\n var target = this.searchPossibleTargets(this._objects, pointer);\n if (\n e[this.altSelectionKey] &&\n target &&\n activeTarget &&\n target !== activeTarget\n ) {\n target = activeTarget;\n this.targets = activeTargetSubs;\n }\n return target;\n },\n\n /**\n * Checks point is inside the object.\n * @param {Object} [pointer] x,y object of point coordinates we want to check.\n * @param {fabric.Object} obj Object to test against\n * @param {Object} [globalPointer] x,y object of point coordinates relative to canvas used to search per pixel target.\n * @return {Boolean} true if point is contained within an area of given object\n * @private\n */\n _checkTarget: function (pointer, obj, globalPointer) {\n if (\n obj &&\n obj.visible &&\n obj.evented &&\n // http://www.geog.ubc.ca/courses/klink/gis.notes/ncgia/u32.html\n // http://idav.ucdavis.edu/~okreylos/TAship/Spring2000/PointInPolygon.html\n obj.containsPoint(pointer)\n ) {\n if (\n (this.perPixelTargetFind || obj.perPixelTargetFind) &&\n !obj.isEditing\n ) {\n var isTransparent = this.isTargetTransparent(\n obj,\n globalPointer.x,\n globalPointer.y\n );\n if (!isTransparent) {\n return true;\n }\n } else {\n return true;\n }\n }\n },\n\n /**\n * Internal Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted\n * @param {Array} [objects] objects array to look into\n * @param {Object} [pointer] x,y object of point coordinates we want to check.\n * @return {fabric.Object} **top most object from given `objects`** that contains pointer\n * @private\n */\n _searchPossibleTargets: function (objects, pointer) {\n // Cache all targets where their bounding box contains point.\n var target,\n i = objects.length,\n subTarget;\n // Do not check for currently grouped objects, since we check the parent group itself.\n // until we call this function specifically to search inside the activeGroup\n while (i--) {\n var objToCheck = objects[i];\n var pointerToUse = objToCheck.group\n ? this._normalizePointer(objToCheck.group, pointer)\n : pointer;\n if (this._checkTarget(pointerToUse, objToCheck, pointer)) {\n target = objects[i];\n if (target.subTargetCheck && Array.isArray(target._objects)) {\n subTarget = this._searchPossibleTargets(target._objects, pointer);\n subTarget && this.targets.push(subTarget);\n }\n break;\n }\n }\n return target;\n },\n\n /**\n * Function used to search inside objects an object that contains pointer in bounding box or that contains pointerOnCanvas when painted\n * @see {@link fabric.Canvas#_searchPossibleTargets}\n * @param {Array} [objects] objects array to look into\n * @param {Object} [pointer] x,y object of point coordinates we want to check.\n * @return {fabric.Object} **top most object on screen** that contains pointer\n */\n searchPossibleTargets: function (objects, pointer) {\n var target = this._searchPossibleTargets(objects, pointer);\n return target && target.interactive && this.targets[0]\n ? this.targets[0]\n : target;\n },\n\n /**\n * Returns pointer coordinates without the effect of the viewport\n * @param {Object} pointer with \"x\" and \"y\" number values\n * @return {Object} object with \"x\" and \"y\" number values\n */\n restorePointerVpt: function (pointer) {\n return fabric.util.transformPoint(\n pointer,\n fabric.util.invertTransform(this.viewportTransform)\n );\n },\n\n /**\n * Returns pointer coordinates relative to canvas.\n * Can return coordinates with or without viewportTransform.\n * ignoreVpt false gives back coordinates that represent\n * the point clicked on canvas element.\n * ignoreVpt true gives back coordinates after being processed\n * by the viewportTransform ( sort of coordinates of what is displayed\n * on the canvas where you are clicking.\n * ignoreVpt true = HTMLElement coordinates relative to top,left\n * ignoreVpt false, default = fabric space coordinates, the same used for shape position\n * To interact with your shapes top and left you want to use ignoreVpt true\n * most of the time, while ignoreVpt false will give you coordinates\n * compatible with the object.oCoords system.\n * of the time.\n * @param {Event} e\n * @param {Boolean} ignoreVpt\n * @return {Point}\n */\n getPointer: function (e, ignoreVpt) {\n // return cached values if we are in the event processing chain\n if (this._absolutePointer && !ignoreVpt) {\n return this._absolutePointer;\n }\n if (this._pointer && ignoreVpt) {\n return this._pointer;\n }\n\n var pointer = getPointer(e),\n upperCanvasEl = this.upperCanvasEl,\n bounds = upperCanvasEl.getBoundingClientRect(),\n boundsWidth = bounds.width || 0,\n boundsHeight = bounds.height || 0,\n cssScale;\n\n if (!boundsWidth || !boundsHeight) {\n if ('top' in bounds && 'bottom' in bounds) {\n boundsHeight = Math.abs(bounds.top - bounds.bottom);\n }\n if ('right' in bounds && 'left' in bounds) {\n boundsWidth = Math.abs(bounds.right - bounds.left);\n }\n }\n\n this.calcOffset();\n pointer.x = pointer.x - this._offset.left;\n pointer.y = pointer.y - this._offset.top;\n if (!ignoreVpt) {\n pointer = this.restorePointerVpt(pointer);\n }\n\n var retinaScaling = this.getRetinaScaling();\n if (retinaScaling !== 1) {\n pointer.x /= retinaScaling;\n pointer.y /= retinaScaling;\n }\n\n // If bounds are not available (i.e. not visible), do not apply scale.\n cssScale =\n boundsWidth === 0 || boundsHeight === 0\n ? new Point(1, 1)\n : new Point(\n upperCanvasEl.width / boundsWidth,\n upperCanvasEl.height / boundsHeight\n );\n\n return new Point(pointer.x * cssScale.x, pointer.y * cssScale.y);\n },\n\n /**\n * Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em)\n * @param {Object} dimensions Object with width/height properties\n * @param {Number|String} [dimensions.width] Width of canvas element\n * @param {Number|String} [dimensions.height] Height of canvas element\n * @param {Object} [options] Options object\n * @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions\n * @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n setDimensions: function (dimensions, options) {\n this._resetTransformEventData();\n return this.callSuper('setDimensions', dimensions, options);\n },\n\n /**\n * @private\n * @throws {CANVAS_INIT_ERROR} If canvas can not be initialized\n */\n _createUpperCanvas: function () {\n var lowerCanvasEl = this.lowerCanvasEl,\n upperCanvasEl = this.upperCanvasEl;\n\n // if there is no upperCanvas (most common case) we create one.\n if (!upperCanvasEl) {\n upperCanvasEl = this._createCanvasElement();\n this.upperCanvasEl = upperCanvasEl;\n }\n // we assign the same classname of the lowerCanvas\n upperCanvasEl.className = lowerCanvasEl.className;\n // but then we remove the lower-canvas specific className\n upperCanvasEl.classList.remove('lower-canvas');\n // we add the specific upper-canvas class\n upperCanvasEl.classList.add('upper-canvas');\n upperCanvasEl.setAttribute('data-fabric', 'top');\n this.wrapperEl.appendChild(upperCanvasEl);\n\n this._copyCanvasStyle(lowerCanvasEl, upperCanvasEl);\n this._applyCanvasStyle(upperCanvasEl);\n upperCanvasEl.setAttribute('draggable', 'true');\n this.contextTop = upperCanvasEl.getContext('2d');\n },\n\n /**\n * @private\n */\n _createCacheCanvas: function () {\n this.cacheCanvasEl = this._createCanvasElement();\n this.cacheCanvasEl.setAttribute('width', this.width);\n this.cacheCanvasEl.setAttribute('height', this.height);\n this.contextCache = this.cacheCanvasEl.getContext('2d');\n },\n\n /**\n * @private\n */\n _initWrapperElement: function () {\n if (this.wrapperEl) {\n return;\n }\n const container = fabric.document.createElement('div');\n container.classList.add(this.containerClass);\n this.wrapperEl = fabric.util.wrapElement(this.lowerCanvasEl, container);\n this.wrapperEl.setAttribute('data-fabric', 'wrapper');\n fabric.util.setStyle(this.wrapperEl, {\n width: this.width + 'px',\n height: this.height + 'px',\n position: 'relative',\n });\n fabric.util.makeElementUnselectable(this.wrapperEl);\n },\n\n /**\n * @private\n * @param {HTMLElement} element canvas element to apply styles on\n */\n _applyCanvasStyle: function (element) {\n var width = this.width || element.width,\n height = this.height || element.height;\n\n fabric.util.setStyle(element, {\n position: 'absolute',\n width: width + 'px',\n height: height + 'px',\n left: 0,\n top: 0,\n 'touch-action': this.allowTouchScrolling ? 'manipulation' : 'none',\n '-ms-touch-action': this.allowTouchScrolling\n ? 'manipulation'\n : 'none',\n });\n element.width = width;\n element.height = height;\n fabric.util.makeElementUnselectable(element);\n },\n\n /**\n * Copy the entire inline style from one element (fromEl) to another (toEl)\n * @private\n * @param {Element} fromEl Element style is copied from\n * @param {Element} toEl Element copied style is applied to\n */\n _copyCanvasStyle: function (fromEl, toEl) {\n toEl.style.cssText = fromEl.style.cssText;\n },\n\n /**\n * Returns context of top canvas where interactions are drawn\n * @returns {CanvasRenderingContext2D}\n */\n getTopContext: function () {\n return this.contextTop;\n },\n\n /**\n * Returns context of canvas where object selection is drawn\n * @alias\n * @return {CanvasRenderingContext2D}\n */\n getSelectionContext: function () {\n return this.contextTop;\n },\n\n /**\n * Returns <canvas> element on which object selection is drawn\n * @return {HTMLCanvasElement}\n */\n getSelectionElement: function () {\n return this.upperCanvasEl;\n },\n\n /**\n * Returns currently active object\n * @return {fabric.Object} active object\n */\n getActiveObject: function () {\n return this._activeObject;\n },\n\n /**\n * Returns an array with the current selected objects\n * @return {fabric.Object} active object\n */\n getActiveObjects: function () {\n var active = this._activeObject;\n if (active) {\n if (active.type === 'activeSelection' && active._objects) {\n return active._objects.slice(0);\n } else {\n return [active];\n }\n }\n return [];\n },\n\n /**\n * @private\n * Compares the old activeObject with the current one and fires correct events\n * @param {fabric.Object} obj old activeObject\n */\n _fireSelectionEvents: function (oldObjects, e) {\n var somethingChanged = false,\n objects = this.getActiveObjects(),\n added = [],\n removed = [],\n invalidate = false;\n oldObjects.forEach(function (oldObject) {\n if (objects.indexOf(oldObject) === -1) {\n somethingChanged = true;\n oldObject.fire('deselected', {\n e: e,\n target: oldObject,\n });\n removed.push(oldObject);\n }\n });\n objects.forEach(function (object) {\n if (oldObjects.indexOf(object) === -1) {\n somethingChanged = true;\n object.fire('selected', {\n e: e,\n target: object,\n });\n added.push(object);\n }\n });\n if (oldObjects.length > 0 && objects.length > 0) {\n invalidate = true;\n somethingChanged &&\n this.fire('selection:updated', {\n e: e,\n selected: added,\n deselected: removed,\n });\n } else if (objects.length > 0) {\n invalidate = true;\n this.fire('selection:created', {\n e: e,\n selected: added,\n });\n } else if (oldObjects.length > 0) {\n invalidate = true;\n this.fire('selection:cleared', {\n e: e,\n deselected: removed,\n });\n }\n invalidate && (this._objectsToRender = undefined);\n },\n\n /**\n * Sets given object as the only active object on canvas\n * @param {fabric.Object} object Object to set as an active one\n * @param {Event} [e] Event (passed along when firing \"object:selected\")\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n setActiveObject: function (object, e) {\n var currentActives = this.getActiveObjects();\n this._setActiveObject(object, e);\n this._fireSelectionEvents(currentActives, e);\n return this;\n },\n\n /**\n * This is a private method for now.\n * This is supposed to be equivalent to setActiveObject but without firing\n * any event. There is commitment to have this stay this way.\n * This is the functional part of setActiveObject.\n * @private\n * @param {Object} object to set as active\n * @param {Event} [e] Event (passed along when firing \"object:selected\")\n * @return {Boolean} true if the selection happened\n */\n _setActiveObject: function (object, e) {\n if (this._activeObject === object) {\n return false;\n }\n if (!this._discardActiveObject(e, object)) {\n return false;\n }\n if (object.onSelect({ e: e })) {\n return false;\n }\n this._activeObject = object;\n return true;\n },\n\n /**\n * This is a private method for now.\n * This is supposed to be equivalent to discardActiveObject but without firing\n * any selection events ( can still fire object transformation events ). There is commitment to have this stay this way.\n * This is the functional part of discardActiveObject.\n * @param {Event} [e] Event (passed along when firing \"object:deselected\")\n * @param {Object} object to set as active\n * @return {Boolean} true if the selection happened\n * @private\n */\n _discardActiveObject: function (e, object) {\n var obj = this._activeObject;\n if (obj) {\n // onDeselect return TRUE to cancel selection;\n if (obj.onDeselect({ e: e, object: object })) {\n return false;\n }\n if (this._currentTransform && this._currentTransform.target === obj) {\n this.endCurrentTransform(e);\n }\n this._activeObject = null;\n }\n return true;\n },\n\n /**\n * Discards currently active object and fire events. If the function is called by fabric\n * as a consequence of a mouse event, the event is passed as a parameter and\n * sent to the fire function for the custom events. When used as a method the\n * e param does not have any application.\n * @param {event} e\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n discardActiveObject: function (e) {\n var currentActives = this.getActiveObjects(),\n activeObject = this.getActiveObject();\n if (currentActives.length) {\n this.fire('before:selection:cleared', { target: activeObject, e: e });\n }\n this._discardActiveObject(e);\n this._fireSelectionEvents(currentActives, e);\n return this;\n },\n\n /**\n * Clears the canvas element, disposes objects, removes all event listeners and frees resources\n *\n * **CAUTION**:\n *\n * This method is **UNSAFE**.\n * You may encounter a race condition using it if there's a requested render.\n * Call this method only if you are sure rendering has settled.\n * Consider using {@link dispose} as it is **SAFE**\n *\n * @private\n */\n destroy: function () {\n var wrapperEl = this.wrapperEl,\n lowerCanvasEl = this.lowerCanvasEl,\n upperCanvasEl = this.upperCanvasEl,\n cacheCanvasEl = this.cacheCanvasEl;\n this.removeListeners();\n this.callSuper('destroy');\n wrapperEl.removeChild(upperCanvasEl);\n wrapperEl.removeChild(lowerCanvasEl);\n this.contextCache = null;\n this.contextTop = null;\n fabric.util.cleanUpJsdomNode(upperCanvasEl);\n this.upperCanvasEl = undefined;\n fabric.util.cleanUpJsdomNode(cacheCanvasEl);\n this.cacheCanvasEl = undefined;\n if (wrapperEl.parentNode) {\n wrapperEl.parentNode.replaceChild(lowerCanvasEl, wrapperEl);\n }\n delete this.wrapperEl;\n return this;\n },\n\n /**\n * Clears all contexts (background, main, top) of an instance\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n clear: function () {\n // this.discardActiveGroup();\n this.discardActiveObject();\n this.clearContext(this.contextTop);\n return this.callSuper('clear');\n },\n\n /**\n * Draws objects' controls (borders/controls)\n * @param {CanvasRenderingContext2D} ctx Context to render controls on\n */\n drawControls: function (ctx) {\n var activeObject = this._activeObject;\n\n if (activeObject) {\n activeObject._renderControls(ctx);\n }\n },\n\n /**\n * @private\n */\n _toObject: function (instance, methodName, propertiesToInclude) {\n //If the object is part of the current selection group, it should\n //be transformed appropriately\n //i.e. it should be serialised as it would appear if the selection group\n //were to be destroyed.\n var originalProperties = this._realizeGroupTransformOnObject(instance),\n object = this.callSuper(\n '_toObject',\n instance,\n methodName,\n propertiesToInclude\n );\n //Undo the damage we did by changing all of its properties\n originalProperties && instance.set(originalProperties);\n return object;\n },\n\n /**\n * Realises an object's group transformation on it\n * @private\n * @param {fabric.Object} [instance] the object to transform (gets mutated)\n * @returns the original values of instance which were changed\n */\n _realizeGroupTransformOnObject: function (instance) {\n if (\n instance.group &&\n instance.group.type === 'activeSelection' &&\n this._activeObject === instance.group\n ) {\n var layoutProps = [\n 'angle',\n 'flipX',\n 'flipY',\n 'left',\n 'scaleX',\n 'scaleY',\n 'skewX',\n 'skewY',\n 'top',\n ];\n //Copy all the positionally relevant properties across now\n var originalValues = {};\n layoutProps.forEach(function (prop) {\n originalValues[prop] = instance[prop];\n });\n fabric.util.addTransformToObject(\n instance,\n this._activeObject.calcOwnMatrix()\n );\n return originalValues;\n } else {\n return null;\n }\n },\n\n /**\n * @private\n */\n _setSVGObject: function (markup, instance, reviver) {\n //If the object is in a selection group, simulate what would happen to that\n //object when the group is deselected\n var originalProperties = this._realizeGroupTransformOnObject(instance);\n this.callSuper('_setSVGObject', markup, instance, reviver);\n originalProperties && instance.set(originalProperties);\n },\n\n setViewportTransform: function (vpt) {\n if (\n this.renderOnAddRemove &&\n this._activeObject &&\n this._activeObject.isEditing\n ) {\n this._activeObject.clearContextTop();\n }\n fabric.StaticCanvas.prototype.setViewportTransform.call(this, vpt);\n },\n }\n );\n\n // copying static properties manually to work around Opera's bug,\n // where \"prototype\" property is enumerable and overrides existing prototype\n for (var prop in fabric.StaticCanvas) {\n if (prop !== 'prototype') {\n fabric.Canvas[prop] = fabric.StaticCanvas[prop];\n }\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","import { TransformEvent } from '../typedefs';\n\nexport const fireEvent = (eventName: string, options: TransformEvent) => {\n const target = options.transform.target;\n target.canvas?.fire('object:' + eventName, { ...options, target });\n target.fire(eventName, options);\n};\n","//@ts-nocheck\n\nimport { fireEvent } from '../util/fireEvent';\n\n(function (global) {\n var fabric = global.fabric,\n addListener = fabric.util.addListener,\n removeListener = fabric.util.removeListener,\n RIGHT_CLICK = 3,\n MIDDLE_CLICK = 2,\n LEFT_CLICK = 1,\n addEventOptions = { passive: false };\n\n function checkClick(e, value) {\n return e.button && e.button === value - 1;\n }\n\n fabric.util.object.extend(\n fabric.Canvas.prototype,\n /** @lends fabric.Canvas.prototype */ {\n /**\n * Contains the id of the touch event that owns the fabric transform\n * @type Number\n * @private\n */\n mainTouchId: null,\n\n /**\n * Adds mouse listeners to canvas\n * @private\n */\n _initEventListeners: function () {\n // in case we initialized the class twice. This should not happen normally\n // but in some kind of applications where the canvas element may be changed\n // this is a workaround to having double listeners.\n this.removeListeners();\n this._bindEvents();\n this.addOrRemove(addListener, 'add');\n },\n\n /**\n * return an event prefix pointer or mouse.\n * @private\n */\n _getEventPrefix: function () {\n return this.enablePointerEvents ? 'pointer' : 'mouse';\n },\n\n addOrRemove: function (functor, eventjsFunctor) {\n var canvasElement = this.upperCanvasEl,\n eventTypePrefix = this._getEventPrefix();\n functor(fabric.window, 'resize', this._onResize);\n functor(canvasElement, eventTypePrefix + 'down', this._onMouseDown);\n functor(\n canvasElement,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n functor(canvasElement, eventTypePrefix + 'out', this._onMouseOut);\n functor(canvasElement, eventTypePrefix + 'enter', this._onMouseEnter);\n functor(canvasElement, 'wheel', this._onMouseWheel);\n functor(canvasElement, 'contextmenu', this._onContextMenu);\n functor(canvasElement, 'dblclick', this._onDoubleClick);\n functor(canvasElement, 'dragstart', this._onDragStart);\n functor(canvasElement, 'dragend', this._onDragEnd);\n functor(canvasElement, 'dragover', this._onDragOver);\n functor(canvasElement, 'dragenter', this._onDragEnter);\n functor(canvasElement, 'dragleave', this._onDragLeave);\n functor(canvasElement, 'drop', this._onDrop);\n if (!this.enablePointerEvents) {\n functor(\n canvasElement,\n 'touchstart',\n this._onTouchStart,\n addEventOptions\n );\n }\n if (typeof eventjs !== 'undefined' && eventjsFunctor in eventjs) {\n eventjs[eventjsFunctor](canvasElement, 'gesture', this._onGesture);\n eventjs[eventjsFunctor](canvasElement, 'drag', this._onDrag);\n eventjs[eventjsFunctor](\n canvasElement,\n 'orientation',\n this._onOrientationChange\n );\n eventjs[eventjsFunctor](canvasElement, 'shake', this._onShake);\n eventjs[eventjsFunctor](\n canvasElement,\n 'longpress',\n this._onLongPress\n );\n }\n },\n\n /**\n * Removes all event listeners\n */\n removeListeners: function () {\n this.addOrRemove(removeListener, 'remove');\n // if you dispose on a mouseDown, before mouse up, you need to clean document to...\n var eventTypePrefix = this._getEventPrefix();\n removeListener(\n fabric.document,\n eventTypePrefix + 'up',\n this._onMouseUp\n );\n removeListener(\n fabric.document,\n 'touchend',\n this._onTouchEnd,\n addEventOptions\n );\n removeListener(\n fabric.document,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n removeListener(\n fabric.document,\n 'touchmove',\n this._onMouseMove,\n addEventOptions\n );\n },\n\n /**\n * @private\n */\n _bindEvents: function () {\n if (this.eventsBound) {\n // for any reason we pass here twice we do not want to bind events twice.\n return;\n }\n this._onMouseDown = this._onMouseDown.bind(this);\n this._onTouchStart = this._onTouchStart.bind(this);\n this._onMouseMove = this._onMouseMove.bind(this);\n this._onMouseUp = this._onMouseUp.bind(this);\n this._onTouchEnd = this._onTouchEnd.bind(this);\n this._onResize = this._onResize.bind(this);\n this._onGesture = this._onGesture.bind(this);\n this._onDrag = this._onDrag.bind(this);\n this._onShake = this._onShake.bind(this);\n this._onLongPress = this._onLongPress.bind(this);\n this._onOrientationChange = this._onOrientationChange.bind(this);\n this._onMouseWheel = this._onMouseWheel.bind(this);\n this._onMouseOut = this._onMouseOut.bind(this);\n this._onMouseEnter = this._onMouseEnter.bind(this);\n this._onContextMenu = this._onContextMenu.bind(this);\n this._onDoubleClick = this._onDoubleClick.bind(this);\n this._onDragStart = this._onDragStart.bind(this);\n this._onDragEnd = this._onDragEnd.bind(this);\n this._onDragProgress = this._onDragProgress.bind(this);\n this._onDragOver = this._onDragOver.bind(this);\n this._onDragEnter = this._onDragEnter.bind(this);\n this._onDragLeave = this._onDragLeave.bind(this);\n this._onDrop = this._onDrop.bind(this);\n this.eventsBound = true;\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js gesture\n * @param {Event} [self] Inner Event object\n */\n _onGesture: function (e, self) {\n this.__onTransformGesture && this.__onTransformGesture(e, self);\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js drag\n * @param {Event} [self] Inner Event object\n */\n _onDrag: function (e, self) {\n this.__onDrag && this.__onDrag(e, self);\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on wheel event\n */\n _onMouseWheel: function (e) {\n this.__onMouseWheel(e);\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onMouseOut: function (e) {\n var target = this._hoveredTarget;\n this.fire('mouse:out', { target: target, e: e });\n this._hoveredTarget = null;\n target && target.fire('mouseout', { e: e });\n\n this._hoveredTargets.forEach(function (nestedTarget) {\n this.fire('mouse:out', { target: nestedTarget, e: e });\n nestedTarget && nestedTarget.fire('mouseout', { e: e });\n }, this);\n this._hoveredTargets = [];\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mouseenter\n */\n _onMouseEnter: function (e) {\n // This find target and consequent 'mouse:over' is used to\n // clear old instances on hovered target.\n // calling findTarget has the side effect of killing target.__corner.\n // as a short term fix we are not firing this if we are currently transforming.\n // as a long term fix we need to separate the action of finding a target with the\n // side effects we added to it.\n if (!this._currentTransform && !this.findTarget(e)) {\n this.fire('mouse:over', { target: null, e: e });\n this._hoveredTarget = null;\n this._hoveredTargets = [];\n }\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js orientation change\n * @param {Event} [self] Inner Event object\n */\n _onOrientationChange: function (e, self) {\n this.__onOrientationChange && this.__onOrientationChange(e, self);\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n * @param {Event} [self] Inner Event object\n */\n _onShake: function (e, self) {\n this.__onShake && this.__onShake(e, self);\n },\n\n /**\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n * @param {Event} [self] Inner Event object\n */\n _onLongPress: function (e, self) {\n this.__onLongPress && this.__onLongPress(e, self);\n },\n\n /**\n * supports native like text dragging\n * @private\n * @param {DragEvent} e\n */\n _onDragStart: function (e) {\n var activeObject = this.getActiveObject();\n if (\n activeObject &&\n typeof activeObject.onDragStart === 'function' &&\n activeObject.onDragStart(e)\n ) {\n this._dragSource = activeObject;\n var options = { e: e, target: activeObject };\n this.fire('dragstart', options);\n activeObject.fire('dragstart', options);\n addListener(this.upperCanvasEl, 'drag', this._onDragProgress);\n return;\n }\n e.preventDefault();\n e.stopPropagation();\n },\n\n /**\n * @private\n */\n _renderDragEffects: function (e, source, target) {\n var ctx = this.contextTop;\n if (source) {\n source.clearContextTop(true);\n source.renderDragSourceEffect(e);\n }\n if (target) {\n if (target !== source) {\n ctx.restore();\n ctx.save();\n target.clearContextTop(true);\n }\n target.renderDropTargetEffect(e);\n }\n ctx.restore();\n },\n\n /**\n * supports native like text dragging\n * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#finishing_a_drag\n * @private\n * @param {DragEvent} e\n */\n _onDragEnd: function (e) {\n var didDrop = e.dataTransfer.dropEffect !== 'none',\n dropTarget = didDrop ? this._activeObject : undefined,\n options = {\n e: e,\n target: this._dragSource,\n subTargets: this.targets,\n dragSource: this._dragSource,\n didDrop: didDrop,\n dropTarget: dropTarget,\n };\n removeListener(this.upperCanvasEl, 'drag', this._onDragProgress);\n this.fire('dragend', options);\n this._dragSource && this._dragSource.fire('dragend', options);\n delete this._dragSource;\n // we need to call mouse up synthetically because the browser won't\n this._onMouseUp(e);\n },\n\n /**\n * fire `drag` event on canvas and drag source\n * @private\n * @param {DragEvent} e\n */\n _onDragProgress: function (e) {\n var options = {\n e: e,\n dragSource: this._dragSource,\n dropTarget: this._draggedoverTarget,\n };\n this.fire('drag', options);\n this._dragSource && this._dragSource.fire('drag', options);\n },\n\n /**\n * prevent default to allow drop event to be fired\n * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#specifying_drop_targets\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n */\n _onDragOver: function (e) {\n var eventType = 'dragover',\n target = this.findTarget(e),\n targets = this.targets,\n options = {\n e: e,\n target: target,\n subTargets: targets,\n dragSource: this._dragSource,\n canDrop: false,\n dropTarget: undefined,\n },\n dropTarget;\n // fire on canvas\n this.fire(eventType, options);\n // make sure we fire dragenter events before dragover\n // if dragleave is needed, object will not fire dragover so we don't need to trouble ourselves with it\n this._fireEnterLeaveEvents(target, options);\n if (target) {\n // render drag selection before rendering target cursor for correct visuals\n if (target.canDrop(e)) {\n dropTarget = target;\n }\n target.fire(eventType, options);\n }\n // propagate the event to subtargets\n for (var i = 0; i < targets.length; i++) {\n target = targets[i];\n // accept event only if previous targets didn't\n if (!e.defaultPrevented && target.canDrop(e)) {\n dropTarget = target;\n }\n target.fire(eventType, options);\n }\n // render drag effects now that relations between source and target is clear\n this._renderDragEffects(e, this._dragSource, dropTarget);\n },\n\n /**\n * fire `dragleave` on `dragover` targets\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n */\n _onDragEnter: function (e) {\n var target = this.findTarget(e);\n var options = {\n e: e,\n target: target,\n subTargets: this.targets,\n dragSource: this._dragSource,\n };\n this.fire('dragenter', options);\n // fire dragenter on targets\n this._fireEnterLeaveEvents(target, options);\n },\n\n /**\n * fire `dragleave` on `dragover` targets\n * @private\n * @param {Event} [e] Event object fired on Event.js shake\n */\n _onDragLeave: function (e) {\n var options = {\n e: e,\n target: this._draggedoverTarget,\n subTargets: this.targets,\n dragSource: this._dragSource,\n };\n this.fire('dragleave', options);\n // fire dragleave on targets\n this._fireEnterLeaveEvents(null, options);\n // clear targets\n this.targets = [];\n this._hoveredTargets = [];\n },\n\n /**\n * `drop:before` is a an event that allows you to schedule logic\n * before the `drop` event. Prefer `drop` event always, but if you need\n * to run some drop-disabling logic on an event, since there is no way\n * to handle event handlers ordering, use `drop:before`\n * @private\n * @param {Event} e\n */\n _onDrop: function (e) {\n var options = this._simpleEventHandler('drop:before', e, {\n dragSource: this._dragSource,\n pointer: this.getPointer(e),\n });\n // will be set by the drop target\n options.didDrop = false;\n // will be set by the drop target, used in case options.target refuses the drop\n options.dropTarget = undefined;\n // fire `drop`\n this._basicEventHandler('drop', options);\n // inform canvas of the drop\n // we do this because canvas was unaware of what happened at the time the `drop` event was fired on it\n // use for side effects\n this.fire('drop:after', options);\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onContextMenu: function (e) {\n var options = this._simpleEventHandler('contextmenu:before', e);\n if (this.stopContextMenu) {\n e.stopPropagation();\n e.preventDefault();\n }\n this._basicEventHandler('contextmenu', options);\n return false;\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onDoubleClick: function (e) {\n this._cacheTransformEventData(e);\n this._handleEvent(e, 'dblclick');\n this._resetTransformEventData();\n },\n\n /**\n * Return a the id of an event.\n * returns either the pointerId or the identifier or 0 for the mouse event\n * @private\n * @param {Event} evt Event object\n */\n getPointerId: function (evt) {\n var changedTouches = evt.changedTouches;\n\n if (changedTouches) {\n return changedTouches[0] && changedTouches[0].identifier;\n }\n\n if (this.enablePointerEvents) {\n return evt.pointerId;\n }\n\n return -1;\n },\n\n /**\n * Determines if an event has the id of the event that is considered main\n * @private\n * @param {evt} event Event object\n */\n _isMainEvent: function (evt) {\n if (evt.isPrimary === true) {\n return true;\n }\n if (evt.isPrimary === false) {\n return false;\n }\n if (evt.type === 'touchend' && evt.touches.length === 0) {\n return true;\n }\n if (evt.changedTouches) {\n return evt.changedTouches[0].identifier === this.mainTouchId;\n }\n return true;\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onTouchStart: function (e) {\n e.preventDefault();\n if (this.mainTouchId === null) {\n this.mainTouchId = this.getPointerId(e);\n }\n this.__onMouseDown(e);\n this._resetTransformEventData();\n var canvasElement = this.upperCanvasEl,\n eventTypePrefix = this._getEventPrefix();\n addListener(\n fabric.document,\n 'touchend',\n this._onTouchEnd,\n addEventOptions\n );\n addListener(\n fabric.document,\n 'touchmove',\n this._onMouseMove,\n addEventOptions\n );\n // Unbind mousedown to prevent double triggers from touch devices\n removeListener(\n canvasElement,\n eventTypePrefix + 'down',\n this._onMouseDown\n );\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onMouseDown: function (e) {\n this.__onMouseDown(e);\n this._resetTransformEventData();\n var canvasElement = this.upperCanvasEl,\n eventTypePrefix = this._getEventPrefix();\n removeListener(\n canvasElement,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n addListener(fabric.document, eventTypePrefix + 'up', this._onMouseUp);\n addListener(\n fabric.document,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onTouchEnd: function (e) {\n if (e.touches.length > 0) {\n // if there are still touches stop here\n return;\n }\n this.__onMouseUp(e);\n this._resetTransformEventData();\n this.mainTouchId = null;\n var eventTypePrefix = this._getEventPrefix();\n removeListener(\n fabric.document,\n 'touchend',\n this._onTouchEnd,\n addEventOptions\n );\n removeListener(\n fabric.document,\n 'touchmove',\n this._onMouseMove,\n addEventOptions\n );\n var _this = this;\n if (this._willAddMouseDown) {\n clearTimeout(this._willAddMouseDown);\n }\n this._willAddMouseDown = setTimeout(function () {\n // Wait 400ms before rebinding mousedown to prevent double triggers\n // from touch devices\n addListener(\n _this.upperCanvasEl,\n eventTypePrefix + 'down',\n _this._onMouseDown\n );\n _this._willAddMouseDown = 0;\n }, 400);\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mouseup\n */\n _onMouseUp: function (e) {\n this.__onMouseUp(e);\n this._resetTransformEventData();\n var canvasElement = this.upperCanvasEl,\n eventTypePrefix = this._getEventPrefix();\n if (this._isMainEvent(e)) {\n removeListener(\n fabric.document,\n eventTypePrefix + 'up',\n this._onMouseUp\n );\n removeListener(\n fabric.document,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n addListener(\n canvasElement,\n eventTypePrefix + 'move',\n this._onMouseMove,\n addEventOptions\n );\n }\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousemove\n */\n _onMouseMove: function (e) {\n var activeObject = this.getActiveObject();\n !this.allowTouchScrolling &&\n (!activeObject || !activeObject.__isDragging) &&\n e.preventDefault &&\n e.preventDefault();\n this.__onMouseMove(e);\n },\n\n /**\n * @private\n */\n _onResize: function () {\n this.calcOffset();\n this._resetTransformEventData();\n },\n\n /**\n * Decides whether the canvas should be redrawn in mouseup and mousedown events.\n * @private\n * @param {Object} target\n */\n _shouldRender: function (target) {\n var activeObject = this._activeObject;\n\n if (\n !!activeObject !== !!target ||\n (activeObject && target && activeObject !== target)\n ) {\n // this covers: switch of target, from target to no target, selection of target\n // multiSelection with key and mouse\n return true;\n } else if (activeObject && activeObject.isEditing) {\n // if we mouse up/down over a editing textbox a cursor change,\n // there is no need to re render\n return false;\n }\n return false;\n },\n\n /**\n * Method that defines the actions when mouse is released on canvas.\n * The method resets the currentTransform parameters, store the image corner\n * position in the image object and render the canvas on top.\n * @private\n * @param {Event} e Event object fired on mouseup\n */\n __onMouseUp: function (e) {\n var target,\n transform = this._currentTransform,\n groupSelector = this._groupSelector,\n shouldRender = false,\n isClick =\n !groupSelector ||\n (groupSelector.left === 0 && groupSelector.top === 0);\n this._cacheTransformEventData(e);\n target = this._target;\n this._handleEvent(e, 'up:before');\n // if right/middle click just fire events and return\n // target undefined will make the _handleEvent search the target\n if (checkClick(e, RIGHT_CLICK)) {\n if (this.fireRightClick) {\n this._handleEvent(e, 'up', RIGHT_CLICK, isClick);\n }\n return;\n }\n\n if (checkClick(e, MIDDLE_CLICK)) {\n if (this.fireMiddleClick) {\n this._handleEvent(e, 'up', MIDDLE_CLICK, isClick);\n }\n this._resetTransformEventData();\n return;\n }\n\n if (this.isDrawingMode && this._isCurrentlyDrawing) {\n this._onMouseUpInDrawingMode(e);\n return;\n }\n\n if (!this._isMainEvent(e)) {\n return;\n }\n if (transform) {\n this._finalizeCurrentTransform(e);\n shouldRender = transform.actionPerformed;\n }\n if (!isClick) {\n var targetWasActive = target === this._activeObject;\n this._maybeGroupObjects(e);\n if (!shouldRender) {\n shouldRender =\n this._shouldRender(target) ||\n (!targetWasActive && target === this._activeObject);\n }\n }\n var corner, pointer;\n if (target) {\n corner = target._findTargetCorner(\n this.getPointer(e, true),\n fabric.util.isTouchEvent(e)\n );\n if (\n target.selectable &&\n target !== this._activeObject &&\n target.activeOn === 'up'\n ) {\n this.setActiveObject(target, e);\n shouldRender = true;\n } else {\n var control = target.controls[corner],\n mouseUpHandler =\n control && control.getMouseUpHandler(e, target, control);\n if (mouseUpHandler) {\n pointer = this.getPointer(e);\n mouseUpHandler(e, transform, pointer.x, pointer.y);\n }\n }\n target.isMoving = false;\n }\n // if we are ending up a transform on a different control or a new object\n // fire the original mouse up from the corner that started the transform\n if (\n transform &&\n (transform.target !== target || transform.corner !== corner)\n ) {\n var originalControl =\n transform.target && transform.target.controls[transform.corner],\n originalMouseUpHandler =\n originalControl &&\n originalControl.getMouseUpHandler(e, target, control);\n pointer = pointer || this.getPointer(e);\n originalMouseUpHandler &&\n originalMouseUpHandler(e, transform, pointer.x, pointer.y);\n }\n this._setCursorFromEvent(e, target);\n this._handleEvent(e, 'up', LEFT_CLICK, isClick);\n this._groupSelector = null;\n this._currentTransform = null;\n // reset the target information about which corner is selected\n target && (target.__corner = 0);\n if (shouldRender) {\n this.requestRenderAll();\n } else if (!isClick) {\n this.renderTop();\n }\n },\n\n /**\n * @private\n * Handle event firing for target and subtargets\n * @param {Event} e event from mouse\n * @param {String} eventType event to fire (up, down or move)\n * @param {object} [data] event data overrides\n * @return {object} options\n */\n _simpleEventHandler: function (eventType, e, data) {\n var target = this.findTarget(e),\n subTargets = this.targets || [];\n return this._basicEventHandler(\n eventType,\n Object.assign(\n {},\n {\n e: e,\n target: target,\n subTargets: subTargets,\n },\n data\n )\n );\n },\n\n _basicEventHandler: function (eventType, options) {\n var target = options.target,\n subTargets = options.subTargets;\n this.fire(eventType, options);\n target && target.fire(eventType, options);\n for (var i = 0; i < subTargets.length; i++) {\n subTargets[i].fire(eventType, options);\n }\n return options;\n },\n\n /**\n * @private\n * Handle event firing for target and subtargets\n * @param {Event} e event from mouse\n * @param {String} eventType event to fire (up, down or move)\n * @param {fabric.Object} targetObj receiving event\n * @param {Number} [button] button used in the event 1 = left, 2 = middle, 3 = right\n * @param {Boolean} isClick for left button only, indicates that the mouse up happened without move.\n */\n _handleEvent: function (e, eventType, button, isClick) {\n var target = this._target,\n targets = this.targets || [],\n options = {\n e: e,\n target: target,\n subTargets: targets,\n button: button || LEFT_CLICK,\n isClick: isClick || false,\n pointer: this._pointer,\n absolutePointer: this._absolutePointer,\n transform: this._currentTransform,\n };\n if (eventType === 'up') {\n options.currentTarget = this.findTarget(e);\n options.currentSubTargets = this.targets;\n }\n this.fire('mouse:' + eventType, options);\n target && target.fire('mouse' + eventType, options);\n for (var i = 0; i < targets.length; i++) {\n targets[i].fire('mouse' + eventType, options);\n }\n },\n\n /**\n * End the current transfrom.\n * You don't usually need to call this method unless you are interupting a user initiated transform\n * because of some other event ( a press of key combination, or something that block the user UX )\n * @param {Event} [e] send the mouse event that generate the finalize down, so it can be used in the event\n */\n endCurrentTransform: function (e) {\n var transform = this._currentTransform;\n this._finalizeCurrentTransform(e);\n if (transform && transform.target) {\n // this could probably go inside _finalizeCurrentTransform\n transform.target.isMoving = false;\n }\n this._currentTransform = null;\n },\n\n /**\n * @private\n * @param {Event} e send the mouse event that generate the finalize down, so it can be used in the event\n */\n _finalizeCurrentTransform: function (e) {\n var transform = this._currentTransform,\n target = transform.target,\n options = {\n e: e,\n target: target,\n transform: transform,\n action: transform.action,\n };\n\n if (target._scaling) {\n target._scaling = false;\n }\n\n target.setCoords();\n\n if (\n transform.actionPerformed ||\n (this.stateful && target.hasStateChanged())\n ) {\n this._fire('modified', options);\n }\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n _onMouseDownInDrawingMode: function (e) {\n this._isCurrentlyDrawing = true;\n if (this.getActiveObject()) {\n this.discardActiveObject(e).requestRenderAll();\n }\n var pointer = this.getPointer(e);\n this.freeDrawingBrush.onMouseDown(pointer, { e: e, pointer: pointer });\n this._handleEvent(e, 'down');\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mousemove\n */\n _onMouseMoveInDrawingMode: function (e) {\n if (this._isCurrentlyDrawing) {\n var pointer = this.getPointer(e);\n this.freeDrawingBrush.onMouseMove(pointer, {\n e: e,\n pointer: pointer,\n });\n }\n this.setCursor(this.freeDrawingCursor);\n this._handleEvent(e, 'move');\n },\n\n /**\n * @private\n * @param {Event} e Event object fired on mouseup\n */\n _onMouseUpInDrawingMode: function (e) {\n var pointer = this.getPointer(e);\n this._isCurrentlyDrawing = this.freeDrawingBrush.onMouseUp({\n e: e,\n pointer: pointer,\n });\n this._handleEvent(e, 'up');\n },\n\n /**\n * Method that defines the actions when mouse is clicked on canvas.\n * The method inits the currentTransform parameters and renders all the\n * canvas so the current image can be placed on the top canvas and the rest\n * in on the container one.\n * @private\n * @param {Event} e Event object fired on mousedown\n */\n __onMouseDown: function (e) {\n this._cacheTransformEventData(e);\n this._handleEvent(e, 'down:before');\n var target = this._target;\n // if right click just fire events\n if (checkClick(e, RIGHT_CLICK)) {\n if (this.fireRightClick) {\n this._handleEvent(e, 'down', RIGHT_CLICK);\n }\n return;\n }\n\n if (checkClick(e, MIDDLE_CLICK)) {\n if (this.fireMiddleClick) {\n this._handleEvent(e, 'down', MIDDLE_CLICK);\n }\n return;\n }\n\n if (this.isDrawingMode) {\n this._onMouseDownInDrawingMode(e);\n return;\n }\n\n if (!this._isMainEvent(e)) {\n return;\n }\n\n // ignore if some object is being transformed at this moment\n if (this._currentTransform) {\n return;\n }\n\n var pointer = this._pointer;\n // save pointer for check in __onMouseUp event\n this._previousPointer = pointer;\n var shouldRender = this._shouldRender(target),\n shouldGroup = this._shouldGroup(e, target);\n if (this._shouldClearSelection(e, target)) {\n this.discardActiveObject(e);\n } else if (shouldGroup) {\n this._handleGrouping(e, target);\n target = this._activeObject;\n }\n\n if (\n this.selection &&\n (!target ||\n (!target.selectable &&\n !target.isEditing &&\n target !== this._activeObject))\n ) {\n this._groupSelector = {\n ex: this._absolutePointer.x,\n ey: this._absolutePointer.y,\n top: 0,\n left: 0,\n };\n }\n\n if (target) {\n var alreadySelected = target === this._activeObject;\n if (target.selectable && target.activeOn === 'down') {\n this.setActiveObject(target, e);\n }\n var corner = target._findTargetCorner(\n this.getPointer(e, true),\n fabric.util.isTouchEvent(e)\n );\n target.__corner = corner;\n if (target === this._activeObject && (corner || !shouldGroup)) {\n this._setupCurrentTransform(e, target, alreadySelected);\n var control = target.controls[corner],\n pointer = this.getPointer(e),\n mouseDownHandler =\n control && control.getMouseDownHandler(e, target, control);\n if (mouseDownHandler) {\n mouseDownHandler(e, this._currentTransform, pointer.x, pointer.y);\n }\n }\n }\n var invalidate = shouldRender || shouldGroup;\n // we clear `_objectsToRender` in case of a change in order to repopulate it at rendering\n // run before firing the `down` event to give the dev a chance to populate it themselves\n invalidate && (this._objectsToRender = undefined);\n this._handleEvent(e, 'down');\n // we must renderAll so that we update the visuals\n invalidate && this.requestRenderAll();\n },\n\n /**\n * reset cache form common information needed during event processing\n * @private\n */\n _resetTransformEventData: function () {\n this._target = null;\n this._pointer = null;\n this._absolutePointer = null;\n },\n\n /**\n * Cache common information needed during event processing\n * @private\n * @param {Event} e Event object fired on event\n */\n _cacheTransformEventData: function (e) {\n // reset in order to avoid stale caching\n this._resetTransformEventData();\n this._pointer = this.getPointer(e, true);\n this._absolutePointer = this.restorePointerVpt(this._pointer);\n this._target = this._currentTransform\n ? this._currentTransform.target\n : this.findTarget(e) || null;\n },\n\n /**\n * @private\n */\n _beforeTransform: function (e) {\n var t = this._currentTransform;\n this.stateful && t.target.saveState();\n this.fire('before:transform', {\n e: e,\n transform: t,\n });\n },\n\n /**\n * Method that defines the actions when mouse is hovering the canvas.\n * The currentTransform parameter will define whether the user is rotating/scaling/translating\n * an image or neither of them (only hovering). A group selection is also possible and would cancel\n * all any other type of action.\n * In case of an image transformation only the top canvas will be rendered.\n * @private\n * @param {Event} e Event object fired on mousemove\n */\n __onMouseMove: function (e) {\n this._handleEvent(e, 'move:before');\n this._cacheTransformEventData(e);\n var target, pointer;\n\n if (this.isDrawingMode) {\n this._onMouseMoveInDrawingMode(e);\n return;\n }\n\n if (!this._isMainEvent(e)) {\n return;\n }\n\n var groupSelector = this._groupSelector;\n\n // We initially clicked in an empty area, so we draw a box for multiple selection\n if (groupSelector) {\n pointer = this._absolutePointer;\n\n groupSelector.left = pointer.x - groupSelector.ex;\n groupSelector.top = pointer.y - groupSelector.ey;\n\n this.renderTop();\n } else if (!this._currentTransform) {\n target = this.findTarget(e) || null;\n this._setCursorFromEvent(e, target);\n this._fireOverOutEvents(target, e);\n } else {\n this._transformObject(e);\n }\n this._handleEvent(e, 'move');\n this._resetTransformEventData();\n },\n\n /**\n * Manage the mouseout, mouseover events for the fabric object on the canvas\n * @param {Fabric.Object} target the target where the target from the mousemove event\n * @param {Event} e Event object fired on mousemove\n * @private\n */\n _fireOverOutEvents: function (target, e) {\n var _hoveredTarget = this._hoveredTarget,\n _hoveredTargets = this._hoveredTargets,\n targets = this.targets,\n length = Math.max(_hoveredTargets.length, targets.length);\n\n this.fireSyntheticInOutEvents(\n target,\n { e: e },\n {\n oldTarget: _hoveredTarget,\n evtOut: 'mouseout',\n canvasEvtOut: 'mouse:out',\n evtIn: 'mouseover',\n canvasEvtIn: 'mouse:over',\n }\n );\n for (var i = 0; i < length; i++) {\n this.fireSyntheticInOutEvents(\n targets[i],\n { e: e },\n {\n oldTarget: _hoveredTargets[i],\n evtOut: 'mouseout',\n evtIn: 'mouseover',\n }\n );\n }\n this._hoveredTarget = target;\n this._hoveredTargets = this.targets.concat();\n },\n\n /**\n * Manage the dragEnter, dragLeave events for the fabric objects on the canvas\n * @param {Fabric.Object} target the target where the target from the onDrag event\n * @param {Object} data Event object fired on dragover\n * @private\n */\n _fireEnterLeaveEvents: function (target, data) {\n var _draggedoverTarget = this._draggedoverTarget,\n _hoveredTargets = this._hoveredTargets,\n targets = this.targets,\n length = Math.max(_hoveredTargets.length, targets.length);\n\n this.fireSyntheticInOutEvents(target, data, {\n oldTarget: _draggedoverTarget,\n evtOut: 'dragleave',\n evtIn: 'dragenter',\n canvasEvtIn: 'drag:enter',\n canvasEvtOut: 'drag:leave',\n });\n for (var i = 0; i < length; i++) {\n this.fireSyntheticInOutEvents(targets[i], data, {\n oldTarget: _hoveredTargets[i],\n evtOut: 'dragleave',\n evtIn: 'dragenter',\n });\n }\n this._draggedoverTarget = target;\n },\n\n /**\n * Manage the synthetic in/out events for the fabric objects on the canvas\n * @param {Fabric.Object} target the target where the target from the supported events\n * @param {Object} data Event object fired\n * @param {Object} config configuration for the function to work\n * @param {String} config.targetName property on the canvas where the old target is stored\n * @param {String} [config.canvasEvtOut] name of the event to fire at canvas level for out\n * @param {String} config.evtOut name of the event to fire for out\n * @param {String} [config.canvasEvtIn] name of the event to fire at canvas level for in\n * @param {String} config.evtIn name of the event to fire for in\n * @private\n */\n fireSyntheticInOutEvents: function (target, data, config) {\n var inOpt,\n outOpt,\n oldTarget = config.oldTarget,\n outFires,\n inFires,\n targetChanged = oldTarget !== target,\n canvasEvtIn = config.canvasEvtIn,\n canvasEvtOut = config.canvasEvtOut;\n if (targetChanged) {\n inOpt = Object.assign({}, data, {\n target: target,\n previousTarget: oldTarget,\n });\n outOpt = Object.assign({}, data, {\n target: oldTarget,\n nextTarget: target,\n });\n }\n inFires = target && targetChanged;\n outFires = oldTarget && targetChanged;\n if (outFires) {\n canvasEvtOut && this.fire(canvasEvtOut, outOpt);\n oldTarget.fire(config.evtOut, outOpt);\n }\n if (inFires) {\n canvasEvtIn && this.fire(canvasEvtIn, inOpt);\n target.fire(config.evtIn, inOpt);\n }\n },\n\n /**\n * Method that defines actions when an Event Mouse Wheel\n * @param {Event} e Event object fired on mouseup\n */\n __onMouseWheel: function (e) {\n this._cacheTransformEventData(e);\n this._handleEvent(e, 'wheel');\n this._resetTransformEventData();\n },\n\n /**\n * @private\n * @param {Event} e Event fired on mousemove\n */\n _transformObject: function (e) {\n var pointer = this.getPointer(e),\n transform = this._currentTransform,\n target = transform.target,\n // transform pointer to target's containing coordinate plane\n // both pointer and object should agree on every point\n localPointer = target.group\n ? fabric.util.sendPointToPlane(\n pointer,\n undefined,\n target.group.calcTransformMatrix()\n )\n : pointer;\n\n transform.reset = false;\n transform.shiftKey = e.shiftKey;\n transform.altKey = e[this.centeredKey];\n\n this._performTransformAction(e, transform, localPointer);\n transform.actionPerformed && this.requestRenderAll();\n },\n\n /**\n * @private\n */\n _performTransformAction: function (e, transform, pointer) {\n var x = pointer.x,\n y = pointer.y,\n action = transform.action,\n actionPerformed = false,\n actionHandler = transform.actionHandler;\n // this object could be created from the function in the control handlers\n\n if (actionHandler) {\n actionPerformed = actionHandler(e, transform, x, y);\n }\n if (action === 'drag' && actionPerformed) {\n transform.target.isMoving = true;\n this.setCursor(transform.target.moveCursor || this.moveCursor);\n }\n transform.actionPerformed =\n transform.actionPerformed || actionPerformed;\n },\n\n /**\n * @private\n */\n _fire: function (eventName, options) {\n return fireEvent(eventName, options);\n },\n\n /**\n * Sets the cursor depending on where the canvas is being hovered.\n * Note: very buggy in Opera\n * @param {Event} e Event object\n * @param {Object} target Object that the mouse is hovering, if so.\n */\n _setCursorFromEvent: function (e, target) {\n if (!target) {\n this.setCursor(this.defaultCursor);\n return false;\n }\n var hoverCursor = target.hoverCursor || this.hoverCursor,\n activeSelection =\n this._activeObject && this._activeObject.type === 'activeSelection'\n ? this._activeObject\n : null,\n // only show proper corner when group selection is not active\n corner =\n (!activeSelection || !activeSelection.contains(target)) &&\n // here we call findTargetCorner always with undefined for the touch parameter.\n // we assume that if you are using a cursor you do not need to interact with\n // the bigger touch area.\n target._findTargetCorner(this.getPointer(e, true));\n\n if (!corner) {\n if (target.subTargetCheck) {\n // hoverCursor should come from top-most subTarget,\n // so we walk the array backwards\n this.targets\n .concat()\n .reverse()\n .map(function (_target) {\n hoverCursor = _target.hoverCursor || hoverCursor;\n });\n }\n this.setCursor(hoverCursor);\n } else {\n this.setCursor(this.getCornerCursor(corner, target, e));\n }\n },\n\n /**\n * @private\n */\n getCornerCursor: function (corner, target, e) {\n var control = target.controls[corner];\n return control.cursorStyleHandler(e, control, target);\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\n(function (global) {\n var fabric = global.fabric,\n min = Math.min,\n max = Math.max;\n\n fabric.util.object.extend(\n fabric.Canvas.prototype,\n /** @lends fabric.Canvas.prototype */ {\n /**\n * @private\n * @param {Event} e Event object\n * @param {fabric.Object} target\n * @return {Boolean}\n */\n _shouldGroup: function (e, target) {\n var activeObject = this._activeObject;\n // check if an active object exists on canvas and if the user is pressing the `selectionKey` while canvas supports multi selection.\n return (\n !!activeObject &&\n this._isSelectionKeyPressed(e) &&\n this.selection &&\n // on top of that the user also has to hit a target that is selectable.\n !!target &&\n target.selectable &&\n // if all pre-requisite pass, the target is either something different from the current\n // activeObject or if an activeSelection already exists\n // TODO at time of writing why `activeObject.type === 'activeSelection'` matter is unclear.\n // is a very old condition uncertain if still valid.\n (activeObject !== target ||\n activeObject.type === 'activeSelection') &&\n // make sure `activeObject` and `target` aren't ancestors of each other\n !target.isDescendantOf(activeObject) &&\n !activeObject.isDescendantOf(target) &&\n // target accepts selection\n !target.onSelect({ e: e })\n );\n },\n\n /**\n * @private\n * @param {Event} e Event object\n * @param {fabric.Object} target\n */\n _handleGrouping: function (e, target) {\n var activeObject = this._activeObject;\n // avoid multi select when shift click on a corner\n if (activeObject.__corner) {\n return;\n }\n if (target === activeObject) {\n // if it's a group, find target again, using activeGroup objects\n target = this.findTarget(e, true);\n // if even object is not found or we are on activeObjectCorner, bail out\n if (!target || !target.selectable) {\n return;\n }\n }\n if (activeObject && activeObject.type === 'activeSelection') {\n this._updateActiveSelection(target, e);\n } else {\n this._createActiveSelection(target, e);\n }\n },\n\n /**\n * @private\n */\n _updateActiveSelection: function (target, e) {\n var activeSelection = this._activeObject,\n currentActiveObjects = activeSelection._objects.slice(0);\n if (target.group === activeSelection) {\n activeSelection.remove(target);\n this._hoveredTarget = target;\n this._hoveredTargets = this.targets.concat();\n if (activeSelection.size() === 1) {\n // activate last remaining object\n this._setActiveObject(activeSelection.item(0), e);\n }\n } else {\n activeSelection.add(target);\n this._hoveredTarget = activeSelection;\n this._hoveredTargets = this.targets.concat();\n }\n this._fireSelectionEvents(currentActiveObjects, e);\n },\n\n /**\n * @private\n */\n _createActiveSelection: function (target, e) {\n var currentActives = this.getActiveObjects(),\n group = this._createGroup(target);\n this._hoveredTarget = group;\n // ISSUE 4115: should we consider subTargets here?\n // this._hoveredTargets = [];\n // this._hoveredTargets = this.targets.concat();\n this._setActiveObject(group, e);\n this._fireSelectionEvents(currentActives, e);\n },\n\n /**\n * @private\n * @param {Object} target\n * @returns {fabric.ActiveSelection}\n */\n _createGroup: function (target) {\n var activeObject = this._activeObject;\n var groupObjects = target.isInFrontOf(activeObject)\n ? [activeObject, target]\n : [target, activeObject];\n activeObject.isEditing && activeObject.exitEditing();\n // handle case: target is nested\n return new fabric.ActiveSelection(groupObjects, {\n canvas: this,\n });\n },\n\n /**\n * @private\n * @param {Event} e mouse event\n */\n _groupSelectedObjects: function (e) {\n var group = this._collectObjects(e),\n aGroup;\n\n // do not create group for 1 element only\n if (group.length === 1) {\n this.setActiveObject(group[0], e);\n } else if (group.length > 1) {\n aGroup = new fabric.ActiveSelection(group.reverse(), {\n canvas: this,\n });\n this.setActiveObject(aGroup, e);\n }\n },\n\n /**\n * @private\n */\n _collectObjects: function (e) {\n var group = [],\n currentObject,\n x1 = this._groupSelector.ex,\n y1 = this._groupSelector.ey,\n x2 = x1 + this._groupSelector.left,\n y2 = y1 + this._groupSelector.top,\n selectionX1Y1 = new Point(min(x1, x2), min(y1, y2)),\n selectionX2Y2 = new Point(max(x1, x2), max(y1, y2)),\n allowIntersect = !this.selectionFullyContained,\n isClick = x1 === x2 && y1 === y2;\n // we iterate reverse order to collect top first in case of click.\n for (var i = this._objects.length; i--; ) {\n currentObject = this._objects[i];\n\n if (\n !currentObject ||\n !currentObject.selectable ||\n !currentObject.visible\n ) {\n continue;\n }\n\n if (\n (allowIntersect &&\n currentObject.intersectsWithRect(\n selectionX1Y1,\n selectionX2Y2,\n true\n )) ||\n currentObject.isContainedWithinRect(\n selectionX1Y1,\n selectionX2Y2,\n true\n ) ||\n (allowIntersect &&\n currentObject.containsPoint(selectionX1Y1, null, true)) ||\n (allowIntersect &&\n currentObject.containsPoint(selectionX2Y2, null, true))\n ) {\n group.push(currentObject);\n // only add one object if it's a click\n if (isClick) {\n break;\n }\n }\n }\n\n if (group.length > 1) {\n group = group.filter(function (object) {\n return !object.onSelect({ e: e });\n });\n }\n\n return group;\n },\n\n /**\n * @private\n */\n _maybeGroupObjects: function (e) {\n if (this.selection && this._groupSelector) {\n this._groupSelectedObjects(e);\n }\n this.setCursor(this.defaultCursor);\n // clear selection and current transformation\n this._groupSelector = null;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.StaticCanvas.prototype,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Exports canvas element to a dataurl image. Note that when multiplier is used, cropping is scaled appropriately\n * @param {Object} [options] Options object\n * @param {String} [options.format=png] The format of the output image. Either \"jpeg\" or \"png\"\n * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg.\n * @param {Number} [options.multiplier=1] Multiplier to scale by, to have consistent\n * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14\n * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14\n * @param {Number} [options.width] Cropping width. Introduced in v1.2.14\n * @param {Number} [options.height] Cropping height. Introduced in v1.2.14\n * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 2.0.0\n * @param {(object: fabric.Object) => boolean} [options.filter] Function to filter objects.\n * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format\n * @see {@link https://jsfiddle.net/xsjua1rd/ demo}\n * @example Generate jpeg dataURL with lower quality\n * var dataURL = canvas.toDataURL({\n * format: 'jpeg',\n * quality: 0.8\n * });\n * @example Generate cropped png dataURL (clipping of canvas)\n * var dataURL = canvas.toDataURL({\n * format: 'png',\n * left: 100,\n * top: 100,\n * width: 200,\n * height: 200\n * });\n * @example Generate double scaled png dataURL\n * var dataURL = canvas.toDataURL({\n * format: 'png',\n * multiplier: 2\n * });\n * @example Generate dataURL with objects that overlap a specified object\n * var myObject;\n * var dataURL = canvas.toDataURL({\n * filter: (object) => object.isContainedWithinObject(myObject) || object.intersectsWithObject(myObject)\n * });\n */\n toDataURL: function (options) {\n options || (options = {});\n\n var format = options.format || 'png',\n quality = options.quality || 1,\n multiplier =\n (options.multiplier || 1) *\n (options.enableRetinaScaling ? this.getRetinaScaling() : 1),\n canvasEl = this.toCanvasElement(multiplier, options);\n return fabric.util.toDataURL(canvasEl, format, quality);\n },\n\n /**\n * Create a new HTMLCanvas element painted with the current canvas content.\n * No need to resize the actual one or repaint it.\n * Will transfer object ownership to a new canvas, paint it, and set everything back.\n * This is an intermediary step used to get to a dataUrl but also it is useful to\n * create quick image copies of a canvas without passing for the dataUrl string\n * @param {Number} [multiplier] a zoom factor.\n * @param {Object} [options] Cropping informations\n * @param {Number} [options.left] Cropping left offset.\n * @param {Number} [options.top] Cropping top offset.\n * @param {Number} [options.width] Cropping width.\n * @param {Number} [options.height] Cropping height.\n * @param {(object: fabric.Object) => boolean} [options.filter] Function to filter objects.\n */\n toCanvasElement: function (multiplier, options) {\n multiplier = multiplier || 1;\n options = options || {};\n var scaledWidth = (options.width || this.width) * multiplier,\n scaledHeight = (options.height || this.height) * multiplier,\n zoom = this.getZoom(),\n originalWidth = this.width,\n originalHeight = this.height,\n newZoom = zoom * multiplier,\n vp = this.viewportTransform,\n translateX = (vp[4] - (options.left || 0)) * multiplier,\n translateY = (vp[5] - (options.top || 0)) * multiplier,\n originalInteractive = this.interactive,\n newVp = [newZoom, 0, 0, newZoom, translateX, translateY],\n originalRetina = this.enableRetinaScaling,\n canvasEl = fabric.util.createCanvasElement(),\n originalContextTop = this.contextTop,\n objectsToRender = options.filter\n ? this._objects.filter(options.filter)\n : this._objects;\n canvasEl.width = scaledWidth;\n canvasEl.height = scaledHeight;\n this.contextTop = null;\n this.enableRetinaScaling = false;\n this.interactive = false;\n this.viewportTransform = newVp;\n this.width = scaledWidth;\n this.height = scaledHeight;\n this.calcViewportBoundaries();\n this.renderCanvas(canvasEl.getContext('2d'), objectsToRender);\n this.viewportTransform = vp;\n this.width = originalWidth;\n this.height = originalHeight;\n this.calcViewportBoundaries();\n this.interactive = originalInteractive;\n this.enableRetinaScaling = originalRetina;\n this.contextTop = originalContextTop;\n return canvasEl;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.StaticCanvas.prototype,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Populates canvas with data from the specified JSON.\n * JSON format must conform to the one of {@link fabric.Canvas#toJSON}\n *\n * **IMPORTANT**: It is recommended to abort loading tasks before calling this method to prevent race conditions and unnecessary networking\n *\n * @param {String|Object} json JSON string or object\n * @param {Function} [reviver] Method for further parsing of JSON elements, called after each fabric object created.\n * @param {Object} [options] options\n * @param {AbortSignal} [options.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @return {Promise} instance\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#deserialization}\n * @see {@link http://jsfiddle.net/fabricjs/fmgXt/|jsFiddle demo}\n * @example loadFromJSON\n * canvas.loadFromJSON(json).then((canvas) => canvas.requestRenderAll());\n * @example loadFromJSON with reviver\n * canvas.loadFromJSON(json, function(o, object) {\n * // `o` = json object\n * // `object` = fabric.Object instance\n * // ... do some stuff ...\n * }).then((canvas) => {\n * ... canvas is restored, add your code.\n * });\n *\n */\n loadFromJSON: function (json, reviver, options) {\n if (!json) {\n return Promise.reject(new Error('fabric.js: `json` is undefined'));\n }\n\n // serialize if it wasn't already\n var serialized =\n typeof json === 'string' ? JSON.parse(json) : Object.assign({}, json);\n\n var _this = this,\n renderOnAddRemove = this.renderOnAddRemove;\n this.renderOnAddRemove = false;\n\n return Promise.all([\n fabric.util.enlivenObjects(serialized.objects || [], {\n reviver: reviver,\n signal: options && options.signal,\n }),\n fabric.util.enlivenObjectEnlivables(\n {\n backgroundImage: serialized.backgroundImage,\n backgroundColor: serialized.background,\n overlayImage: serialized.overlayImage,\n overlayColor: serialized.overlay,\n clipPath: serialized.clipPath,\n },\n { signal: options && options.signal }\n ),\n ]).then(function (res) {\n var enlived = res[0],\n enlivedMap = res[1];\n _this.clear();\n _this.__setupCanvas(serialized, enlived);\n _this.renderOnAddRemove = renderOnAddRemove;\n _this.set(enlivedMap);\n return _this;\n });\n },\n\n /**\n * @private\n * @param {Object} serialized Object with background and overlay information\n * @param {Array} enlivenedObjects canvas objects\n */\n __setupCanvas: function (serialized, enlivenedObjects) {\n var _this = this;\n enlivenedObjects.forEach(function (obj, index) {\n // we splice the array just in case some custom classes restored from JSON\n // will add more object to canvas at canvas init.\n _this.insertAt(obj, index);\n });\n // remove parts i cannot set as options\n delete serialized.objects;\n delete serialized.backgroundImage;\n delete serialized.overlayImage;\n delete serialized.background;\n delete serialized.overlay;\n // this._initOptions does too many things to just\n // call it. Normally loading an Object from JSON\n // create the Object instance. Here the Canvas is\n // already an instance and we are just loading things over it\n this._setOptions(serialized);\n },\n\n /**\n * Clones canvas instance\n * @param {Array} [properties] Array of properties to include in the cloned canvas and children\n * @returns {Promise}\n */\n clone: function (properties) {\n var data = JSON.stringify(this.toJSON(properties));\n return this.cloneWithoutData().then(function (clone) {\n return clone.loadFromJSON(data);\n });\n },\n\n /**\n * Clones canvas instance without cloning existing data.\n * This essentially copies canvas dimensions, clipping properties, etc.\n * but leaves data empty (so that you can populate it with your own)\n * @returns {Promise}\n */\n cloneWithoutData: function () {\n var el = fabric.util.createCanvasElement();\n\n el.width = this.width;\n el.height = this.height;\n // this seems wrong. either Canvas or StaticCanvas\n var clone = new fabric.Canvas(el);\n var data = {};\n if (this.backgroundImage) {\n data.backgroundImage = this.backgroundImage.toObject();\n }\n if (this.backgroundColor) {\n data.background = this.backgroundColor.toObject\n ? this.backgroundColor.toObject()\n : this.backgroundColor;\n }\n return clone.loadFromJSON(data);\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n degreesToRadians = fabric.util.degreesToRadians,\n radiansToDegrees = fabric.util.radiansToDegrees;\n\n /**\n * Adds support for multi-touch gestures using the Event.js library.\n * Fires the following custom events:\n * - touch:gesture\n * - touch:drag\n * - touch:orientation\n * - touch:shake\n * - touch:longpress\n */\n fabric.util.object.extend(\n fabric.Canvas.prototype,\n /** @lends fabric.Canvas.prototype */ {\n /**\n * Method that defines actions when an Event.js gesture is detected on an object. Currently only supports\n * 2 finger gestures.\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onTransformGesture: function (e, self) {\n if (\n this.isDrawingMode ||\n !e.touches ||\n e.touches.length !== 2 ||\n 'gesture' !== self.gesture\n ) {\n return;\n }\n\n var target = this.findTarget(e);\n if ('undefined' !== typeof target) {\n this.__gesturesParams = {\n e: e,\n self: self,\n target: target,\n };\n\n this.__gesturesRenderer();\n }\n\n this.fire('touch:gesture', {\n target: target,\n e: e,\n self: self,\n });\n },\n __gesturesParams: null,\n __gesturesRenderer: function () {\n if (this.__gesturesParams === null || this._currentTransform === null) {\n return;\n }\n\n var self = this.__gesturesParams.self,\n t = this._currentTransform,\n e = this.__gesturesParams.e;\n\n t.action = 'scale';\n t.originX = t.originY = 'center';\n\n this._scaleObjectBy(self.scale, e);\n\n if (self.rotation !== 0) {\n t.action = 'rotate';\n this._rotateObjectByAngle(self.rotation, e);\n }\n\n this.requestRenderAll();\n\n t.action = 'drag';\n },\n\n /**\n * Method that defines actions when an Event.js drag is detected.\n *\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onDrag: function (e, self) {\n this.fire('touch:drag', {\n e: e,\n self: self,\n });\n },\n\n /**\n * Method that defines actions when an Event.js orientation event is detected.\n *\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onOrientationChange: function (e, self) {\n this.fire('touch:orientation', {\n e: e,\n self: self,\n });\n },\n\n /**\n * Method that defines actions when an Event.js shake event is detected.\n *\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onShake: function (e, self) {\n this.fire('touch:shake', {\n e: e,\n self: self,\n });\n },\n\n /**\n * Method that defines actions when an Event.js longpress event is detected.\n *\n * @param {Event} e Event object by Event.js\n * @param {Event} self Event proxy object by Event.js\n */\n __onLongPress: function (e, self) {\n this.fire('touch:longpress', {\n e: e,\n self: self,\n });\n },\n\n /**\n * Scales an object by a factor\n * @param {Number} s The scale factor to apply to the current scale level\n * @param {Event} e Event object by Event.js\n */\n _scaleObjectBy: function (s, e) {\n var t = this._currentTransform,\n target = t.target;\n t.gestureScale = s;\n target._scaling = true;\n return fabric.controlsUtils.scalingEqually(e, t, 0, 0);\n },\n\n /**\n * Rotates object by an angle\n * @param {Number} curAngle The angle of rotation in degrees\n * @param {Event} e Event object by Event.js\n */\n _rotateObjectByAngle: function (curAngle, e) {\n var t = this._currentTransform;\n\n if (t.target.get('lockRotation')) {\n return;\n }\n t.target.rotate(radiansToDegrees(degreesToRadians(curAngle) + t.theta));\n this._fire('rotating', {\n target: t.target,\n e: e,\n transform: t,\n });\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { cache } from '../cache';\nimport { config } from '../config';\nimport { VERSION } from '../constants';\nimport { Point } from '../point.class';\nimport { capValue } from '../util/misc/capValue';\nimport { pick } from '../util/misc/pick';\nimport { runningAnimations } from '../util/animation_registry';\nimport { enlivenObjectEnlivables } from '../util/misc/objectEnlive';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n clone = fabric.util.object.clone,\n toFixed = fabric.util.toFixed,\n capitalize = fabric.util.string.capitalize,\n degreesToRadians = fabric.util.degreesToRadians,\n objectCaching = !fabric.isLikelyNode,\n ALIASING_LIMIT = 2;\n /**\n * Root object class from which all 2d shape classes inherit from\n * @class fabric.Object\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#objects}\n * @see {@link fabric.Object#initialize} for constructor definition\n *\n * @fires added\n * @fires removed\n *\n * @fires selected\n * @fires deselected\n * @fires modified\n * @fires modified\n * @fires moved\n * @fires scaled\n * @fires rotated\n * @fires skewed\n *\n * @fires rotating\n * @fires scaling\n * @fires moving\n * @fires skewing\n *\n * @fires mousedown\n * @fires mouseup\n * @fires mouseover\n * @fires mouseout\n * @fires mousewheel\n * @fires mousedblclick\n *\n * @fires dragover\n * @fires dragenter\n * @fires dragleave\n * @fires drop\n */\n fabric.Object = fabric.util.createClass(\n fabric.CommonMethods,\n /** @lends fabric.Object.prototype */ {\n /**\n * Type of an object (rect, circle, path, etc.).\n * Note that this property is meant to be read-only and not meant to be modified.\n * If you modify, certain parts of Fabric (such as JSON loading) won't work correctly.\n * @type String\n * @default\n */\n type: 'object',\n\n /**\n * Horizontal origin of transformation of an object (one of \"left\", \"right\", \"center\")\n * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups\n * @type String\n * @default\n */\n originX: 'left',\n\n /**\n * Vertical origin of transformation of an object (one of \"top\", \"bottom\", \"center\")\n * See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups\n * @type String\n * @default\n */\n originY: 'top',\n\n /**\n * Top position of an object. Note that by default it's relative to object top. You can change this by setting originY={top/center/bottom}\n * @type Number\n * @default\n */\n top: 0,\n\n /**\n * Left position of an object. Note that by default it's relative to object left. You can change this by setting originX={left/center/right}\n * @type Number\n * @default\n */\n left: 0,\n\n /**\n * Object width\n * @type Number\n * @default\n */\n width: 0,\n\n /**\n * Object height\n * @type Number\n * @default\n */\n height: 0,\n\n /**\n * Object scale factor (horizontal)\n * @type Number\n * @default\n */\n scaleX: 1,\n\n /**\n * Object scale factor (vertical)\n * @type Number\n * @default\n */\n scaleY: 1,\n\n /**\n * When true, an object is rendered as flipped horizontally\n * @type Boolean\n * @default\n */\n flipX: false,\n\n /**\n * When true, an object is rendered as flipped vertically\n * @type Boolean\n * @default\n */\n flipY: false,\n\n /**\n * Opacity of an object\n * @type Number\n * @default\n */\n opacity: 1,\n\n /**\n * Angle of rotation of an object (in degrees)\n * @type Number\n * @default\n */\n angle: 0,\n\n /**\n * Angle of skew on x axes of an object (in degrees)\n * @type Number\n * @default\n */\n skewX: 0,\n\n /**\n * Angle of skew on y axes of an object (in degrees)\n * @type Number\n * @default\n */\n skewY: 0,\n\n /**\n * Size of object's controlling corners (in pixels)\n * @type Number\n * @default\n */\n cornerSize: 13,\n\n /**\n * Size of object's controlling corners when touch interaction is detected\n * @type Number\n * @default\n */\n touchCornerSize: 24,\n\n /**\n * When true, object's controlling corners are rendered as transparent inside (i.e. stroke instead of fill)\n * @type Boolean\n * @default\n */\n transparentCorners: true,\n\n /**\n * Default cursor value used when hovering over this object on canvas\n * @type String\n * @default\n */\n hoverCursor: null,\n\n /**\n * Default cursor value used when moving this object on canvas\n * @type String\n * @default\n */\n moveCursor: null,\n\n /**\n * Padding between object and its controlling borders (in pixels)\n * @type Number\n * @default\n */\n padding: 0,\n\n /**\n * Color of controlling borders of an object (when it's active)\n * @type String\n * @default\n */\n borderColor: 'rgb(178,204,255)',\n\n /**\n * Array specifying dash pattern of an object's borders (hasBorder must be true)\n * @since 1.6.2\n * @type Array\n */\n borderDashArray: null,\n\n /**\n * Color of controlling corners of an object (when it's active)\n * @type String\n * @default\n */\n cornerColor: 'rgb(178,204,255)',\n\n /**\n * Color of controlling corners of an object (when it's active and transparentCorners false)\n * @since 1.6.2\n * @type String\n * @default\n */\n cornerStrokeColor: null,\n\n /**\n * Specify style of control, 'rect' or 'circle'\n * @since 1.6.2\n * @type String\n */\n cornerStyle: 'rect',\n\n /**\n * Array specifying dash pattern of an object's control (hasBorder must be true)\n * @since 1.6.2\n * @type Array\n */\n cornerDashArray: null,\n\n /**\n * When true, this object will use center point as the origin of transformation\n * when being scaled via the controls.\n * Backwards incompatibility note: This property replaces \"centerTransform\" (Boolean).\n * @since 1.3.4\n * @type Boolean\n * @default\n */\n centeredScaling: false,\n\n /**\n * When true, this object will use center point as the origin of transformation\n * when being rotated via the controls.\n * Backwards incompatibility note: This property replaces \"centerTransform\" (Boolean).\n * @since 1.3.4\n * @type Boolean\n * @default\n */\n centeredRotation: true,\n\n /**\n * Color of object's fill\n * takes css colors https://www.w3.org/TR/css-color-3/\n * @type String\n * @default\n */\n fill: 'rgb(0,0,0)',\n\n /**\n * Fill rule used to fill an object\n * accepted values are nonzero, evenodd\n * Backwards incompatibility note: This property was used for setting globalCompositeOperation until v1.4.12 (use `fabric.Object#globalCompositeOperation` instead)\n * @type String\n * @default\n */\n fillRule: 'nonzero',\n\n /**\n * Composite rule used for canvas globalCompositeOperation\n * @type String\n * @default\n */\n globalCompositeOperation: 'source-over',\n\n /**\n * Background color of an object.\n * takes css colors https://www.w3.org/TR/css-color-3/\n * @type String\n * @default\n */\n backgroundColor: '',\n\n /**\n * Selection Background color of an object. colored layer behind the object when it is active.\n * does not mix good with globalCompositeOperation methods.\n * @type String\n * @default\n */\n selectionBackgroundColor: '',\n\n /**\n * When defined, an object is rendered via stroke and this property specifies its color\n * takes css colors https://www.w3.org/TR/css-color-3/\n * @type String\n * @default\n */\n stroke: null,\n\n /**\n * Width of a stroke used to render this object\n * @type Number\n * @default\n */\n strokeWidth: 1,\n\n /**\n * Array specifying dash pattern of an object's stroke (stroke must be defined)\n * @type Array\n */\n strokeDashArray: null,\n\n /**\n * Line offset of an object's stroke\n * @type Number\n * @default\n */\n strokeDashOffset: 0,\n\n /**\n * Line endings style of an object's stroke (one of \"butt\", \"round\", \"square\")\n * @type String\n * @default\n */\n strokeLineCap: 'butt',\n\n /**\n * Corner style of an object's stroke (one of \"bevel\", \"round\", \"miter\")\n * @type String\n * @default\n */\n strokeLineJoin: 'miter',\n\n /**\n * Maximum miter length (used for strokeLineJoin = \"miter\") of an object's stroke\n * @type Number\n * @default\n */\n strokeMiterLimit: 4,\n\n /**\n * Shadow object representing shadow of this shape\n * @type fabric.Shadow\n * @default\n */\n shadow: null,\n\n /**\n * Opacity of object's controlling borders when object is active and moving\n * @type Number\n * @default\n */\n borderOpacityWhenMoving: 0.4,\n\n /**\n * Scale factor of object's controlling borders\n * bigger number will make a thicker border\n * border is 1, so this is basically a border thickness\n * since there is no way to change the border itself.\n * @type Number\n * @default\n */\n borderScaleFactor: 1,\n\n /**\n * Minimum allowed scale value of an object\n * @type Number\n * @default\n */\n minScaleLimit: 0,\n\n /**\n * When set to `false`, an object can not be selected for modification (using either point-click-based or group-based selection).\n * But events still fire on it.\n * @type Boolean\n * @default\n */\n selectable: true,\n\n /**\n * When set to `false`, an object can not be a target of events. All events propagate through it. Introduced in v1.3.4\n * @type Boolean\n * @default\n */\n evented: true,\n\n /**\n * When set to `false`, an object is not rendered on canvas\n * @type Boolean\n * @default\n */\n visible: true,\n\n /**\n * When set to `false`, object's controls are not displayed and can not be used to manipulate object\n * @type Boolean\n * @default\n */\n hasControls: true,\n\n /**\n * When set to `false`, object's controlling borders are not rendered\n * @type Boolean\n * @default\n */\n hasBorders: true,\n\n /**\n * When set to `true`, objects are \"found\" on canvas on per-pixel basis rather than according to bounding box\n * @type Boolean\n * @default\n */\n perPixelTargetFind: false,\n\n /**\n * When `false`, default object's values are not included in its serialization\n * @type Boolean\n * @default\n */\n includeDefaultValues: true,\n\n /**\n * When `true`, object horizontal movement is locked\n * @type Boolean\n * @default\n */\n lockMovementX: false,\n\n /**\n * When `true`, object vertical movement is locked\n * @type Boolean\n * @default\n */\n lockMovementY: false,\n\n /**\n * When `true`, object rotation is locked\n * @type Boolean\n * @default\n */\n lockRotation: false,\n\n /**\n * When `true`, object horizontal scaling is locked\n * @type Boolean\n * @default\n */\n lockScalingX: false,\n\n /**\n * When `true`, object vertical scaling is locked\n * @type Boolean\n * @default\n */\n lockScalingY: false,\n\n /**\n * When `true`, object horizontal skewing is locked\n * @type Boolean\n * @default\n */\n lockSkewingX: false,\n\n /**\n * When `true`, object vertical skewing is locked\n * @type Boolean\n * @default\n */\n lockSkewingY: false,\n\n /**\n * When `true`, object cannot be flipped by scaling into negative values\n * @type Boolean\n * @default\n */\n lockScalingFlip: false,\n\n /**\n * When `true`, object is not exported in OBJECT/JSON\n * @since 1.6.3\n * @type Boolean\n * @default\n */\n excludeFromExport: false,\n\n /**\n * When `true`, object is cached on an additional canvas.\n * When `false`, object is not cached unless necessary ( clipPath )\n * default to true\n * @since 1.7.0\n * @type Boolean\n * @default true\n */\n objectCaching: objectCaching,\n\n /**\n * When `true`, object properties are checked for cache invalidation. In some particular\n * situation you may want this to be disabled ( spray brush, very big, groups)\n * or if your application does not allow you to modify properties for groups child you want\n * to disable it for groups.\n * default to false\n * since 1.7.0\n * @type Boolean\n * @default false\n */\n statefullCache: false,\n\n /**\n * When `true`, cache does not get updated during scaling. The picture will get blocky if scaled\n * too much and will be redrawn with correct details at the end of scaling.\n * this setting is performance and application dependant.\n * default to true\n * since 1.7.0\n * @type Boolean\n * @default true\n */\n noScaleCache: true,\n\n /**\n * When `false`, the stoke width will scale with the object.\n * When `true`, the stroke will always match the exact pixel size entered for stroke width.\n * this Property does not work on Text classes or drawing call that uses strokeText,fillText methods\n * default to false\n * @since 2.6.0\n * @type Boolean\n * @default false\n * @type Boolean\n * @default false\n */\n strokeUniform: false,\n\n /**\n * When set to `true`, object's cache will be rerendered next render call.\n * since 1.7.0\n * @type Boolean\n * @default true\n */\n dirty: true,\n\n /**\n * keeps the value of the last hovered corner during mouse move.\n * 0 is no corner, or 'mt', 'ml', 'mtr' etc..\n * It should be private, but there is no harm in using it as\n * a read-only property.\n * @type number|string|any\n * @default 0\n */\n __corner: 0,\n\n /**\n * Determines if the fill or the stroke is drawn first (one of \"fill\" or \"stroke\")\n * @type String\n * @default\n */\n paintFirst: 'fill',\n\n /**\n * When 'down', object is set to active on mousedown/touchstart\n * When 'up', object is set to active on mouseup/touchend\n * Experimental. Let's see if this breaks anything before supporting officially\n * @private\n * since 4.4.0\n * @type String\n * @default 'down'\n */\n activeOn: 'down',\n\n /**\n * List of properties to consider when checking if state\n * of an object is changed (fabric.Object#hasStateChanged)\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties: (\n 'top left width height scaleX scaleY flipX flipY originX originY transformMatrix ' +\n 'stroke strokeWidth strokeDashArray strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit ' +\n 'angle opacity fill globalCompositeOperation shadow visible backgroundColor ' +\n 'skewX skewY fillRule paintFirst clipPath strokeUniform'\n ).split(' '),\n\n /**\n * List of properties to consider when checking if cache needs refresh\n * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single\n * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty\n * and refreshed at the next render\n * @type Array\n */\n cacheProperties: (\n 'fill stroke strokeWidth strokeDashArray width height paintFirst strokeUniform' +\n ' strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit backgroundColor clipPath'\n ).split(' '),\n\n /**\n * List of properties to consider for animating colors.\n * @type Array\n */\n colorProperties: 'fill stroke backgroundColor'.split(' '),\n\n /**\n * a fabricObject that, without stroke define a clipping area with their shape. filled in black\n * the clipPath object gets used when the object has rendered, and the context is placed in the center\n * of the object cacheCanvas.\n * If you want 0,0 of a clipPath to align with an object center, use clipPath.originX/Y to 'center'\n * @type fabric.Object\n */\n clipPath: undefined,\n\n /**\n * Meaningful ONLY when the object is used as clipPath.\n * if true, the clipPath will make the object clip to the outside of the clipPath\n * since 2.4.0\n * @type boolean\n * @default false\n */\n inverted: false,\n\n /**\n * Meaningful ONLY when the object is used as clipPath.\n * if true, the clipPath will have its top and left relative to canvas, and will\n * not be influenced by the object transform. This will make the clipPath relative\n * to the canvas, but clipping just a particular object.\n * WARNING this is beta, this feature may change or be renamed.\n * since 2.4.0\n * @type boolean\n * @default false\n */\n absolutePositioned: false,\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n if (options) {\n this.setOptions(options);\n }\n },\n\n /**\n * Create a the canvas used to keep the cached copy of the object\n * @private\n */\n _createCacheCanvas: function () {\n this._cacheProperties = {};\n this._cacheCanvas = fabric.util.createCanvasElement();\n this._cacheContext = this._cacheCanvas.getContext('2d');\n this._updateCacheCanvas();\n // if canvas gets created, is empty, so dirty.\n this.dirty = true;\n },\n\n /**\n * Limit the cache dimensions so that X * Y do not cross config.perfLimitSizeTotal\n * and each side do not cross fabric.cacheSideLimit\n * those numbers are configurable so that you can get as much detail as you want\n * making bargain with performances.\n * @param {Object} dims\n * @param {Object} dims.width width of canvas\n * @param {Object} dims.height height of canvas\n * @param {Object} dims.zoomX zoomX zoom value to unscale the canvas before drawing cache\n * @param {Object} dims.zoomY zoomY zoom value to unscale the canvas before drawing cache\n * @return {Object}.width width of canvas\n * @return {Object}.height height of canvas\n * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache\n * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache\n */\n _limitCacheSize: function (dims) {\n var width = dims.width,\n height = dims.height,\n max = config.maxCacheSideLimit,\n min = config.minCacheSideLimit;\n if (\n width <= max &&\n height <= max &&\n width * height <= config.perfLimitSizeTotal\n ) {\n if (width < min) {\n dims.width = min;\n }\n if (height < min) {\n dims.height = min;\n }\n return dims;\n }\n var ar = width / height,\n [limX, limY] = cache.limitDimsByArea(ar),\n x = capValue(min, limX, max),\n y = capValue(min, limY, max);\n if (width > x) {\n dims.zoomX /= width / x;\n dims.width = x;\n dims.capped = true;\n }\n if (height > y) {\n dims.zoomY /= height / y;\n dims.height = y;\n dims.capped = true;\n }\n return dims;\n },\n\n /**\n * Return the dimension and the zoom level needed to create a cache canvas\n * big enough to host the object to be cached.\n * @private\n * @return {Object}.x width of object to be cached\n * @return {Object}.y height of object to be cached\n * @return {Object}.width width of canvas\n * @return {Object}.height height of canvas\n * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache\n * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache\n */\n _getCacheCanvasDimensions: function () {\n var objectScale = this.getTotalObjectScaling(),\n // caculate dimensions without skewing\n dim = this._getTransformedDimensions({ skewX: 0, skewY: 0 }),\n neededX = (dim.x * objectScale.x) / this.scaleX,\n neededY = (dim.y * objectScale.y) / this.scaleY;\n return {\n // for sure this ALIASING_LIMIT is slightly creating problem\n // in situation in which the cache canvas gets an upper limit\n // also objectScale contains already scaleX and scaleY\n width: neededX + ALIASING_LIMIT,\n height: neededY + ALIASING_LIMIT,\n zoomX: objectScale.x,\n zoomY: objectScale.y,\n x: neededX,\n y: neededY,\n };\n },\n\n /**\n * Update width and height of the canvas for cache\n * returns true or false if canvas needed resize.\n * @private\n * @return {Boolean} true if the canvas has been resized\n */\n _updateCacheCanvas: function () {\n var targetCanvas = this.canvas;\n if (\n this.noScaleCache &&\n targetCanvas &&\n targetCanvas._currentTransform\n ) {\n var target = targetCanvas._currentTransform.target,\n action = targetCanvas._currentTransform.action;\n if (\n this === target &&\n action.slice &&\n action.slice(0, 5) === 'scale'\n ) {\n return false;\n }\n }\n var canvas = this._cacheCanvas,\n dims = this._limitCacheSize(this._getCacheCanvasDimensions()),\n minCacheSize = config.minCacheSideLimit,\n width = dims.width,\n height = dims.height,\n drawingWidth,\n drawingHeight,\n zoomX = dims.zoomX,\n zoomY = dims.zoomY,\n dimensionsChanged =\n width !== this.cacheWidth || height !== this.cacheHeight,\n zoomChanged = this.zoomX !== zoomX || this.zoomY !== zoomY,\n shouldRedraw = dimensionsChanged || zoomChanged,\n additionalWidth = 0,\n additionalHeight = 0,\n shouldResizeCanvas = false;\n if (dimensionsChanged) {\n var canvasWidth = this._cacheCanvas.width,\n canvasHeight = this._cacheCanvas.height,\n sizeGrowing = width > canvasWidth || height > canvasHeight,\n sizeShrinking =\n (width < canvasWidth * 0.9 || height < canvasHeight * 0.9) &&\n canvasWidth > minCacheSize &&\n canvasHeight > minCacheSize;\n shouldResizeCanvas = sizeGrowing || sizeShrinking;\n if (\n sizeGrowing &&\n !dims.capped &&\n (width > minCacheSize || height > minCacheSize)\n ) {\n additionalWidth = width * 0.1;\n additionalHeight = height * 0.1;\n }\n }\n if (this instanceof fabric.Text && this.path) {\n shouldRedraw = true;\n shouldResizeCanvas = true;\n additionalWidth += this.getHeightOfLine(0) * this.zoomX;\n additionalHeight += this.getHeightOfLine(0) * this.zoomY;\n }\n if (shouldRedraw) {\n if (shouldResizeCanvas) {\n canvas.width = Math.ceil(width + additionalWidth);\n canvas.height = Math.ceil(height + additionalHeight);\n } else {\n this._cacheContext.setTransform(1, 0, 0, 1, 0, 0);\n this._cacheContext.clearRect(0, 0, canvas.width, canvas.height);\n }\n drawingWidth = dims.x / 2;\n drawingHeight = dims.y / 2;\n this.cacheTranslationX =\n Math.round(canvas.width / 2 - drawingWidth) + drawingWidth;\n this.cacheTranslationY =\n Math.round(canvas.height / 2 - drawingHeight) + drawingHeight;\n this.cacheWidth = width;\n this.cacheHeight = height;\n this._cacheContext.translate(\n this.cacheTranslationX,\n this.cacheTranslationY\n );\n this._cacheContext.scale(zoomX, zoomY);\n this.zoomX = zoomX;\n this.zoomY = zoomY;\n return true;\n }\n return false;\n },\n\n /**\n * Sets object's properties from options\n * @param {Object} [options] Options object\n */\n setOptions: function (options) {\n this._setOptions(options);\n },\n\n /**\n * Transforms context when rendering an object\n * @param {CanvasRenderingContext2D} ctx Context\n */\n transform: function (ctx) {\n var needFullTransform =\n (this.group && !this.group._transformDone) ||\n (this.group && this.canvas && ctx === this.canvas.contextTop);\n var m = this.calcTransformMatrix(!needFullTransform);\n ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]);\n },\n\n /**\n * Returns an object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n const NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS,\n clipPathData =\n this.clipPath && !this.clipPath.excludeFromExport\n ? {\n ...this.clipPath.toObject(propertiesToInclude),\n inverted: this.clipPath.inverted,\n absolutePositioned: this.clipPath.absolutePositioned,\n }\n : null,\n object = {\n ...pick(this, propertiesToInclude),\n type: this.type,\n version: VERSION,\n originX: this.originX,\n originY: this.originY,\n left: toFixed(this.left, NUM_FRACTION_DIGITS),\n top: toFixed(this.top, NUM_FRACTION_DIGITS),\n width: toFixed(this.width, NUM_FRACTION_DIGITS),\n height: toFixed(this.height, NUM_FRACTION_DIGITS),\n fill:\n this.fill && this.fill.toObject\n ? this.fill.toObject()\n : this.fill,\n stroke:\n this.stroke && this.stroke.toObject\n ? this.stroke.toObject()\n : this.stroke,\n strokeWidth: toFixed(this.strokeWidth, NUM_FRACTION_DIGITS),\n strokeDashArray: this.strokeDashArray\n ? this.strokeDashArray.concat()\n : this.strokeDashArray,\n strokeLineCap: this.strokeLineCap,\n strokeDashOffset: this.strokeDashOffset,\n strokeLineJoin: this.strokeLineJoin,\n strokeUniform: this.strokeUniform,\n strokeMiterLimit: toFixed(\n this.strokeMiterLimit,\n NUM_FRACTION_DIGITS\n ),\n scaleX: toFixed(this.scaleX, NUM_FRACTION_DIGITS),\n scaleY: toFixed(this.scaleY, NUM_FRACTION_DIGITS),\n angle: toFixed(this.angle, NUM_FRACTION_DIGITS),\n flipX: this.flipX,\n flipY: this.flipY,\n opacity: toFixed(this.opacity, NUM_FRACTION_DIGITS),\n shadow:\n this.shadow && this.shadow.toObject\n ? this.shadow.toObject()\n : this.shadow,\n visible: this.visible,\n backgroundColor: this.backgroundColor,\n fillRule: this.fillRule,\n paintFirst: this.paintFirst,\n globalCompositeOperation: this.globalCompositeOperation,\n skewX: toFixed(this.skewX, NUM_FRACTION_DIGITS),\n skewY: toFixed(this.skewY, NUM_FRACTION_DIGITS),\n ...(clipPathData ? { clipPath: clipPathData } : null),\n };\n\n return !this.includeDefaultValues\n ? this._removeDefaultValues(object)\n : object;\n },\n\n /**\n * Returns (dataless) object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toDatalessObject: function (propertiesToInclude) {\n // will be overwritten by subclasses\n return this.toObject(propertiesToInclude);\n },\n\n /**\n * @private\n * @param {Object} object\n */\n _removeDefaultValues: function (object) {\n var prototype = fabric.util.getKlass(object.type).prototype;\n Object.keys(object).forEach(function (prop) {\n if (prop === 'left' || prop === 'top' || prop === 'type') {\n return;\n }\n if (object[prop] === prototype[prop]) {\n delete object[prop];\n }\n // basically a check for [] === []\n if (\n Array.isArray(object[prop]) &&\n Array.isArray(prototype[prop]) &&\n object[prop].length === 0 &&\n prototype[prop].length === 0\n ) {\n delete object[prop];\n }\n });\n\n return object;\n },\n\n /**\n * Returns a string representation of an instance\n * @return {String}\n */\n toString: function () {\n return '#';\n },\n\n /**\n * Return the object scale factor counting also the group scaling\n * @return {Point}\n */\n getObjectScaling: function () {\n // if the object is a top level one, on the canvas, we go for simple aritmetic\n // otherwise the complex method with angles will return approximations and decimals\n // and will likely kill the cache when not needed\n // https://github.com/fabricjs/fabric.js/issues/7157\n if (!this.group) {\n return new Point(Math.abs(this.scaleX), Math.abs(this.scaleY));\n }\n // if we are inside a group total zoom calculation is complex, we defer to generic matrices\n var options = fabric.util.qrDecompose(this.calcTransformMatrix());\n return new Point(Math.abs(options.scaleX), Math.abs(options.scaleY));\n },\n\n /**\n * Return the object scale factor counting also the group scaling, zoom and retina\n * @return {Object} object with scaleX and scaleY properties\n */\n getTotalObjectScaling: function () {\n var scale = this.getObjectScaling();\n if (this.canvas) {\n var zoom = this.canvas.getZoom();\n var retina = this.canvas.getRetinaScaling();\n return scale.scalarMultiply(zoom * retina);\n }\n return scale;\n },\n\n /**\n * Return the object opacity counting also the group property\n * @return {Number}\n */\n getObjectOpacity: function () {\n var opacity = this.opacity;\n if (this.group) {\n opacity *= this.group.getObjectOpacity();\n }\n return opacity;\n },\n\n /**\n * Returns the object angle relative to canvas counting also the group property\n * @returns {number}\n */\n getTotalAngle: function () {\n return this.group\n ? fabric.util.qrDecompose(this.calcTransformMatrix()).angle\n : this.angle;\n },\n\n /**\n * @private\n * @param {String} key\n * @param {*} value\n * @return {fabric.Object} thisArg\n */\n _set: function (key, value) {\n var shouldConstrainValue = key === 'scaleX' || key === 'scaleY',\n isChanged = this[key] !== value,\n groupNeedsUpdate = false;\n\n if (shouldConstrainValue) {\n value = this._constrainScale(value);\n }\n if (key === 'scaleX' && value < 0) {\n this.flipX = !this.flipX;\n value *= -1;\n } else if (key === 'scaleY' && value < 0) {\n this.flipY = !this.flipY;\n value *= -1;\n } else if (\n key === 'shadow' &&\n value &&\n !(value instanceof fabric.Shadow)\n ) {\n value = new fabric.Shadow(value);\n } else if (key === 'dirty' && this.group) {\n this.group.set('dirty', value);\n }\n\n this[key] = value;\n\n if (isChanged) {\n groupNeedsUpdate = this.group && this.group.isOnACache();\n if (this.cacheProperties.indexOf(key) > -1) {\n this.dirty = true;\n groupNeedsUpdate && this.group.set('dirty', true);\n } else if (\n groupNeedsUpdate &&\n this.stateProperties.indexOf(key) > -1\n ) {\n this.group.set('dirty', true);\n }\n }\n return this;\n },\n\n /**\n * Retrieves viewportTransform from Object's canvas if possible\n * @method getViewportTransform\n * @memberOf fabric.Object.prototype\n * @return {Array}\n */\n getViewportTransform: function () {\n if (this.canvas && this.canvas.viewportTransform) {\n return this.canvas.viewportTransform;\n }\n return fabric.iMatrix.concat();\n },\n\n /*\n * @private\n * return if the object would be visible in rendering\n * @memberOf fabric.Object.prototype\n * @return {Boolean}\n */\n isNotVisible: function () {\n return (\n this.opacity === 0 ||\n (!this.width && !this.height && this.strokeWidth === 0) ||\n !this.visible\n );\n },\n\n /**\n * Renders an object on a specified context\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n render: function (ctx) {\n // do not render if width/height are zeros or object is not visible\n if (this.isNotVisible()) {\n return;\n }\n if (\n this.canvas &&\n this.canvas.skipOffscreen &&\n !this.group &&\n !this.isOnScreen()\n ) {\n return;\n }\n ctx.save();\n this._setupCompositeOperation(ctx);\n this.drawSelectionBackground(ctx);\n this.transform(ctx);\n this._setOpacity(ctx);\n this._setShadow(ctx, this);\n if (this.shouldCache()) {\n this.renderCache();\n this.drawCacheOnCanvas(ctx);\n } else {\n this._removeCacheCanvas();\n this.dirty = false;\n this.drawObject(ctx);\n if (this.objectCaching && this.statefullCache) {\n this.saveState({ propertySet: 'cacheProperties' });\n }\n }\n ctx.restore();\n },\n\n renderCache: function (options) {\n options = options || {};\n if (!this._cacheCanvas || !this._cacheContext) {\n this._createCacheCanvas();\n }\n if (this.isCacheDirty()) {\n this.statefullCache &&\n this.saveState({ propertySet: 'cacheProperties' });\n this.drawObject(this._cacheContext, options.forClipping);\n this.dirty = false;\n }\n },\n\n /**\n * Remove cacheCanvas and its dimensions from the objects\n */\n _removeCacheCanvas: function () {\n this._cacheCanvas = null;\n this._cacheContext = null;\n this.cacheWidth = 0;\n this.cacheHeight = 0;\n },\n\n /**\n * return true if the object will draw a stroke\n * Does not consider text styles. This is just a shortcut used at rendering time\n * We want it to be an approximation and be fast.\n * wrote to avoid extra caching, it has to return true when stroke happens,\n * can guess when it will not happen at 100% chance, does not matter if it misses\n * some use case where the stroke is invisible.\n * @since 3.0.0\n * @returns Boolean\n */\n hasStroke: function () {\n return (\n this.stroke && this.stroke !== 'transparent' && this.strokeWidth !== 0\n );\n },\n\n /**\n * return true if the object will draw a fill\n * Does not consider text styles. This is just a shortcut used at rendering time\n * We want it to be an approximation and be fast.\n * wrote to avoid extra caching, it has to return true when fill happens,\n * can guess when it will not happen at 100% chance, does not matter if it misses\n * some use case where the fill is invisible.\n * @since 3.0.0\n * @returns Boolean\n */\n hasFill: function () {\n return this.fill && this.fill !== 'transparent';\n },\n\n /**\n * When set to `true`, force the object to have its own cache, even if it is inside a group\n * it may be needed when your object behave in a particular way on the cache and always needs\n * its own isolated canvas to render correctly.\n * Created to be overridden\n * since 1.7.12\n * @returns Boolean\n */\n needsItsOwnCache: function () {\n if (\n this.paintFirst === 'stroke' &&\n this.hasFill() &&\n this.hasStroke() &&\n typeof this.shadow === 'object'\n ) {\n return true;\n }\n if (this.clipPath) {\n return true;\n }\n return false;\n },\n\n /**\n * Decide if the object should cache or not. Create its own cache level\n * objectCaching is a global flag, wins over everything\n * needsItsOwnCache should be used when the object drawing method requires\n * a cache step. None of the fabric classes requires it.\n * Generally you do not cache objects in groups because the group outside is cached.\n * Read as: cache if is needed, or if the feature is enabled but we are not already caching.\n * @return {Boolean}\n */\n shouldCache: function () {\n this.ownCaching =\n this.needsItsOwnCache() ||\n (this.objectCaching && (!this.group || !this.group.isOnACache()));\n return this.ownCaching;\n },\n\n /**\n * Check if this object or a child object will cast a shadow\n * used by Group.shouldCache to know if child has a shadow recursively\n * @return {Boolean}\n * @deprecated\n */\n willDrawShadow: function () {\n return (\n !!this.shadow &&\n (this.shadow.offsetX !== 0 || this.shadow.offsetY !== 0)\n );\n },\n\n /**\n * Execute the drawing operation for an object clipPath\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {fabric.Object} clipPath\n */\n drawClipPathOnCache: function (ctx, clipPath) {\n ctx.save();\n // DEBUG: uncomment this line, comment the following\n // ctx.globalAlpha = 0.4\n if (clipPath.inverted) {\n ctx.globalCompositeOperation = 'destination-out';\n } else {\n ctx.globalCompositeOperation = 'destination-in';\n }\n //ctx.scale(1 / 2, 1 / 2);\n if (clipPath.absolutePositioned) {\n var m = fabric.util.invertTransform(this.calcTransformMatrix());\n ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]);\n }\n clipPath.transform(ctx);\n ctx.scale(1 / clipPath.zoomX, 1 / clipPath.zoomY);\n ctx.drawImage(\n clipPath._cacheCanvas,\n -clipPath.cacheTranslationX,\n -clipPath.cacheTranslationY\n );\n ctx.restore();\n },\n\n /**\n * Execute the drawing operation for an object on a specified context\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawObject: function (ctx, forClipping) {\n var originalFill = this.fill,\n originalStroke = this.stroke;\n if (forClipping) {\n this.fill = 'black';\n this.stroke = '';\n this._setClippingProperties(ctx);\n } else {\n this._renderBackground(ctx);\n }\n this._render(ctx);\n this._drawClipPath(ctx, this.clipPath);\n this.fill = originalFill;\n this.stroke = originalStroke;\n },\n\n /**\n * Prepare clipPath state and cache and draw it on instance's cache\n * @param {CanvasRenderingContext2D} ctx\n * @param {fabric.Object} clipPath\n */\n _drawClipPath: function (ctx, clipPath) {\n if (!clipPath) {\n return;\n }\n // needed to setup a couple of variables\n // path canvas gets overridden with this one.\n // TODO find a better solution?\n clipPath._set('canvas', this.canvas);\n clipPath.shouldCache();\n clipPath._transformDone = true;\n clipPath.renderCache({ forClipping: true });\n this.drawClipPathOnCache(ctx, clipPath);\n },\n\n /**\n * Paint the cached copy of the object on the target context.\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawCacheOnCanvas: function (ctx) {\n ctx.scale(1 / this.zoomX, 1 / this.zoomY);\n ctx.drawImage(\n this._cacheCanvas,\n -this.cacheTranslationX,\n -this.cacheTranslationY\n );\n },\n\n /**\n * Check if cache is dirty\n * @param {Boolean} skipCanvas skip canvas checks because this object is painted\n * on parent canvas.\n */\n isCacheDirty: function (skipCanvas) {\n if (this.isNotVisible()) {\n return false;\n }\n if (\n this._cacheCanvas &&\n this._cacheContext &&\n !skipCanvas &&\n this._updateCacheCanvas()\n ) {\n // in this case the context is already cleared.\n return true;\n } else {\n if (\n this.dirty ||\n (this.clipPath && this.clipPath.absolutePositioned) ||\n (this.statefullCache && this.hasStateChanged('cacheProperties'))\n ) {\n if (this._cacheCanvas && this._cacheContext && !skipCanvas) {\n var width = this.cacheWidth / this.zoomX;\n var height = this.cacheHeight / this.zoomY;\n this._cacheContext.clearRect(\n -width / 2,\n -height / 2,\n width,\n height\n );\n }\n return true;\n }\n }\n return false;\n },\n\n /**\n * Draws a background for the object big as its untransformed dimensions\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderBackground: function (ctx) {\n if (!this.backgroundColor) {\n return;\n }\n var dim = this._getNonTransformedDimensions();\n ctx.fillStyle = this.backgroundColor;\n\n ctx.fillRect(-dim.x / 2, -dim.y / 2, dim.x, dim.y);\n // if there is background color no other shadows\n // should be casted\n this._removeShadow(ctx);\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _setOpacity: function (ctx) {\n if (this.group && !this.group._transformDone) {\n ctx.globalAlpha = this.getObjectOpacity();\n } else {\n ctx.globalAlpha *= this.opacity;\n }\n },\n\n _setStrokeStyles: function (ctx, decl) {\n var stroke = decl.stroke;\n if (stroke) {\n ctx.lineWidth = decl.strokeWidth;\n ctx.lineCap = decl.strokeLineCap;\n ctx.lineDashOffset = decl.strokeDashOffset;\n ctx.lineJoin = decl.strokeLineJoin;\n ctx.miterLimit = decl.strokeMiterLimit;\n if (stroke.toLive) {\n if (\n stroke.gradientUnits === 'percentage' ||\n stroke.gradientTransform ||\n stroke.patternTransform\n ) {\n // need to transform gradient in a pattern.\n // this is a slow process. If you are hitting this codepath, and the object\n // is not using caching, you should consider switching it on.\n // we need a canvas as big as the current object caching canvas.\n this._applyPatternForTransformedGradient(ctx, stroke);\n } else {\n // is a simple gradient or pattern\n ctx.strokeStyle = stroke.toLive(ctx, this);\n this._applyPatternGradientTransform(ctx, stroke);\n }\n } else {\n // is a color\n ctx.strokeStyle = decl.stroke;\n }\n }\n },\n\n _setFillStyles: function (ctx, decl) {\n var fill = decl.fill;\n if (fill) {\n if (fill.toLive) {\n ctx.fillStyle = fill.toLive(ctx, this);\n this._applyPatternGradientTransform(ctx, decl.fill);\n } else {\n ctx.fillStyle = fill;\n }\n }\n },\n\n _setClippingProperties: function (ctx) {\n ctx.globalAlpha = 1;\n ctx.strokeStyle = 'transparent';\n ctx.fillStyle = '#000000';\n },\n\n /**\n * @private\n * Sets line dash\n * @param {CanvasRenderingContext2D} ctx Context to set the dash line on\n * @param {Array} dashArray array representing dashes\n */\n _setLineDash: function (ctx, dashArray) {\n if (!dashArray || dashArray.length === 0) {\n return;\n }\n // Spec requires the concatenation of two copies the dash list when the number of elements is odd\n if (1 & dashArray.length) {\n dashArray.push.apply(dashArray, dashArray);\n }\n ctx.setLineDash(dashArray);\n },\n\n /**\n * Renders controls and borders for the object\n * the context here is not transformed\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Object} [styleOverride] properties to override the object style\n */\n _renderControls: function (ctx, styleOverride) {\n var vpt = this.getViewportTransform(),\n matrix = this.calcTransformMatrix(),\n options,\n drawBorders,\n drawControls;\n styleOverride = styleOverride || {};\n drawBorders =\n typeof styleOverride.hasBorders !== 'undefined'\n ? styleOverride.hasBorders\n : this.hasBorders;\n drawControls =\n typeof styleOverride.hasControls !== 'undefined'\n ? styleOverride.hasControls\n : this.hasControls;\n matrix = fabric.util.multiplyTransformMatrices(vpt, matrix);\n options = fabric.util.qrDecompose(matrix);\n ctx.save();\n ctx.translate(options.translateX, options.translateY);\n ctx.lineWidth = 1 * this.borderScaleFactor;\n if (!this.group) {\n ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1;\n }\n if (this.flipX) {\n options.angle -= 180;\n }\n ctx.rotate(degreesToRadians(this.group ? options.angle : this.angle));\n drawBorders && this.drawBorders(ctx, options, styleOverride);\n drawControls && this.drawControls(ctx, styleOverride);\n ctx.restore();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _setShadow: function (ctx) {\n if (!this.shadow) {\n return;\n }\n\n var shadow = this.shadow,\n canvas = this.canvas,\n multX = (canvas && canvas.viewportTransform[0]) || 1,\n multY = (canvas && canvas.viewportTransform[3]) || 1,\n scaling = shadow.nonScaling\n ? new Point(1, 1)\n : this.getObjectScaling();\n if (canvas && canvas._isRetinaScaling()) {\n multX *= config.devicePixelRatio;\n multY *= config.devicePixelRatio;\n }\n ctx.shadowColor = shadow.color;\n ctx.shadowBlur =\n (shadow.blur *\n config.browserShadowBlurConstant *\n (multX + multY) *\n (scaling.x + scaling.y)) /\n 4;\n ctx.shadowOffsetX = shadow.offsetX * multX * scaling.x;\n ctx.shadowOffsetY = shadow.offsetY * multY * scaling.y;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _removeShadow: function (ctx) {\n if (!this.shadow) {\n return;\n }\n\n ctx.shadowColor = '';\n ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Object} filler fabric.Pattern or fabric.Gradient\n * @return {Object} offset.offsetX offset for text rendering\n * @return {Object} offset.offsetY offset for text rendering\n */\n _applyPatternGradientTransform: function (ctx, filler) {\n if (!filler || !filler.toLive) {\n return { offsetX: 0, offsetY: 0 };\n }\n var t = filler.gradientTransform || filler.patternTransform;\n var offsetX = -this.width / 2 + filler.offsetX || 0,\n offsetY = -this.height / 2 + filler.offsetY || 0;\n\n if (filler.gradientUnits === 'percentage') {\n ctx.transform(this.width, 0, 0, this.height, offsetX, offsetY);\n } else {\n ctx.transform(1, 0, 0, 1, offsetX, offsetY);\n }\n if (t) {\n ctx.transform(t[0], t[1], t[2], t[3], t[4], t[5]);\n }\n return { offsetX: offsetX, offsetY: offsetY };\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderPaintInOrder: function (ctx) {\n if (this.paintFirst === 'stroke') {\n this._renderStroke(ctx);\n this._renderFill(ctx);\n } else {\n this._renderFill(ctx);\n this._renderStroke(ctx);\n }\n },\n\n /**\n * @private\n * function that actually render something on the context.\n * empty here to allow Obects to work on tests to benchmark fabric functionalites\n * not related to rendering\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (/* ctx */) {},\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderFill: function (ctx) {\n if (!this.fill) {\n return;\n }\n\n ctx.save();\n this._setFillStyles(ctx, this);\n if (this.fillRule === 'evenodd') {\n ctx.fill('evenodd');\n } else {\n ctx.fill();\n }\n ctx.restore();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderStroke: function (ctx) {\n if (!this.stroke || this.strokeWidth === 0) {\n return;\n }\n\n if (this.shadow && !this.shadow.affectStroke) {\n this._removeShadow(ctx);\n }\n\n ctx.save();\n if (this.strokeUniform) {\n var scaling = this.getObjectScaling();\n ctx.scale(1 / scaling.x, 1 / scaling.y);\n }\n this._setLineDash(ctx, this.strokeDashArray);\n this._setStrokeStyles(ctx, this);\n ctx.stroke();\n ctx.restore();\n },\n\n /**\n * This function try to patch the missing gradientTransform on canvas gradients.\n * transforming a context to transform the gradient, is going to transform the stroke too.\n * we want to transform the gradient but not the stroke operation, so we create\n * a transformed gradient on a pattern and then we use the pattern instead of the gradient.\n * this method has drwabacks: is slow, is in low resolution, needs a patch for when the size\n * is limited.\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {fabric.Gradient} filler a fabric gradient instance\n */\n _applyPatternForTransformedGradient: function (ctx, filler) {\n var dims = this._limitCacheSize(this._getCacheCanvasDimensions()),\n pCanvas = fabric.util.createCanvasElement(),\n pCtx,\n retinaScaling = this.canvas.getRetinaScaling(),\n width = dims.x / this.scaleX / retinaScaling,\n height = dims.y / this.scaleY / retinaScaling;\n pCanvas.width = width;\n pCanvas.height = height;\n pCtx = pCanvas.getContext('2d');\n pCtx.beginPath();\n pCtx.moveTo(0, 0);\n pCtx.lineTo(width, 0);\n pCtx.lineTo(width, height);\n pCtx.lineTo(0, height);\n pCtx.closePath();\n pCtx.translate(width / 2, height / 2);\n pCtx.scale(\n dims.zoomX / this.scaleX / retinaScaling,\n dims.zoomY / this.scaleY / retinaScaling\n );\n this._applyPatternGradientTransform(pCtx, filler);\n pCtx.fillStyle = filler.toLive(ctx);\n pCtx.fill();\n ctx.translate(\n -this.width / 2 - this.strokeWidth / 2,\n -this.height / 2 - this.strokeWidth / 2\n );\n ctx.scale(\n (retinaScaling * this.scaleX) / dims.zoomX,\n (retinaScaling * this.scaleY) / dims.zoomY\n );\n ctx.strokeStyle = pCtx.createPattern(pCanvas, 'no-repeat');\n },\n\n /**\n * This function is an helper for svg import. it returns the center of the object in the svg\n * untransformed coordinates\n * @private\n * @return {Object} center point from element coordinates\n */\n _findCenterFromElement: function () {\n return { x: this.left + this.width / 2, y: this.top + this.height / 2 };\n },\n\n /**\n * This function is an helper for svg import. it decompose the transformMatrix\n * and assign properties to object.\n * untransformed coordinates\n * @private\n * @chainable\n */\n _assignTransformMatrixProps: function () {\n if (this.transformMatrix) {\n var options = fabric.util.qrDecompose(this.transformMatrix);\n this.flipX = false;\n this.flipY = false;\n this.set('scaleX', options.scaleX);\n this.set('scaleY', options.scaleY);\n this.angle = options.angle;\n this.skewX = options.skewX;\n this.skewY = 0;\n }\n },\n\n /**\n * This function is an helper for svg import. it removes the transform matrix\n * and set to object properties that fabricjs can handle\n * @private\n * @param {Object} preserveAspectRatioOptions\n * @return {thisArg}\n */\n _removeTransformMatrix: function (preserveAspectRatioOptions) {\n var center = this._findCenterFromElement();\n if (this.transformMatrix) {\n this._assignTransformMatrixProps();\n center = fabric.util.transformPoint(center, this.transformMatrix);\n }\n this.transformMatrix = null;\n if (preserveAspectRatioOptions) {\n this.scaleX *= preserveAspectRatioOptions.scaleX;\n this.scaleY *= preserveAspectRatioOptions.scaleY;\n this.cropX = preserveAspectRatioOptions.cropX;\n this.cropY = preserveAspectRatioOptions.cropY;\n center.x += preserveAspectRatioOptions.offsetLeft;\n center.y += preserveAspectRatioOptions.offsetTop;\n this.width = preserveAspectRatioOptions.width;\n this.height = preserveAspectRatioOptions.height;\n }\n this.setPositionByOrigin(center, 'center', 'center');\n },\n\n /**\n * Clones an instance.\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @returns {Promise}\n */\n clone: function (propertiesToInclude) {\n var objectForm = this.toObject(propertiesToInclude);\n return this.constructor.fromObject(objectForm);\n },\n\n /**\n * Creates an instance of fabric.Image out of an object\n * makes use of toCanvasElement.\n * Once this method was based on toDataUrl and loadImage, so it also had a quality\n * and format option. toCanvasElement is faster and produce no loss of quality.\n * If you need to get a real Jpeg or Png from an object, using toDataURL is the right way to do it.\n * toCanvasElement and then toBlob from the obtained canvas is also a good option.\n * @param {Object} [options] for clone as image, passed to toDataURL\n * @param {Number} [options.multiplier=1] Multiplier to scale by\n * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14\n * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14\n * @param {Number} [options.width] Cropping width. Introduced in v1.2.14\n * @param {Number} [options.height] Cropping height. Introduced in v1.2.14\n * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4\n * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4\n * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2\n * @return {fabric.Image} Object cloned as image.\n */\n cloneAsImage: function (options) {\n var canvasEl = this.toCanvasElement(options);\n return new fabric.Image(canvasEl);\n },\n\n /**\n * Converts an object into a HTMLCanvas element\n * @param {Object} options Options object\n * @param {Number} [options.multiplier=1] Multiplier to scale by\n * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14\n * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14\n * @param {Number} [options.width] Cropping width. Introduced in v1.2.14\n * @param {Number} [options.height] Cropping height. Introduced in v1.2.14\n * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4\n * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4\n * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2\n * @return {HTMLCanvasElement} Returns DOM element with the fabric.Object\n */\n toCanvasElement: function (options) {\n options || (options = {});\n\n var utils = fabric.util,\n origParams = utils.saveObjectTransform(this),\n originalGroup = this.group,\n originalShadow = this.shadow,\n abs = Math.abs,\n retinaScaling = options.enableRetinaScaling\n ? Math.max(config.devicePixelRatio, 1)\n : 1,\n multiplier = (options.multiplier || 1) * retinaScaling;\n delete this.group;\n if (options.withoutTransform) {\n utils.resetObjectTransform(this);\n }\n if (options.withoutShadow) {\n this.shadow = null;\n }\n\n var el = fabric.util.createCanvasElement(),\n // skip canvas zoom and calculate with setCoords now.\n boundingRect = this.getBoundingRect(true, true),\n shadow = this.shadow,\n shadowOffset = { x: 0, y: 0 },\n width,\n height;\n\n if (shadow) {\n var shadowBlur = shadow.blur;\n var scaling = shadow.nonScaling\n ? new Point(1, 1)\n : this.getObjectScaling();\n // consider non scaling shadow.\n shadowOffset.x =\n 2 * Math.round(abs(shadow.offsetX) + shadowBlur) * abs(scaling.x);\n shadowOffset.y =\n 2 * Math.round(abs(shadow.offsetY) + shadowBlur) * abs(scaling.y);\n }\n width = boundingRect.width + shadowOffset.x;\n height = boundingRect.height + shadowOffset.y;\n // if the current width/height is not an integer\n // we need to make it so.\n el.width = Math.ceil(width);\n el.height = Math.ceil(height);\n var canvas = new fabric.StaticCanvas(el, {\n enableRetinaScaling: false,\n renderOnAddRemove: false,\n skipOffscreen: false,\n });\n if (options.format === 'jpeg') {\n canvas.backgroundColor = '#fff';\n }\n this.setPositionByOrigin(\n new Point(canvas.width / 2, canvas.height / 2),\n 'center',\n 'center'\n );\n var originalCanvas = this.canvas;\n canvas._objects = [this];\n this.set('canvas', canvas);\n this.setCoords();\n var canvasEl = canvas.toCanvasElement(multiplier || 1, options);\n this.set('canvas', originalCanvas);\n this.shadow = originalShadow;\n if (originalGroup) {\n this.group = originalGroup;\n }\n this.set(origParams);\n this.setCoords();\n // canvas.dispose will call image.dispose that will nullify the elements\n // since this canvas is a simple element for the process, we remove references\n // to objects in this way in order to avoid object trashing.\n canvas._objects = [];\n // since render has settled it is safe to destroy canvas\n canvas.destroy();\n canvas = null;\n\n return canvasEl;\n },\n\n /**\n * Converts an object into a data-url-like string\n * @param {Object} options Options object\n * @param {String} [options.format=png] The format of the output image. Either \"jpeg\" or \"png\"\n * @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg.\n * @param {Number} [options.multiplier=1] Multiplier to scale by\n * @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14\n * @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14\n * @param {Number} [options.width] Cropping width. Introduced in v1.2.14\n * @param {Number} [options.height] Cropping height. Introduced in v1.2.14\n * @param {Boolean} [options.enableRetinaScaling] Enable retina scaling for clone image. Introduce in 1.6.4\n * @param {Boolean} [options.withoutTransform] Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4\n * @param {Boolean} [options.withoutShadow] Remove current object shadow. Introduced in 2.4.2\n * @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format\n */\n toDataURL: function (options) {\n options || (options = {});\n return fabric.util.toDataURL(\n this.toCanvasElement(options),\n options.format || 'png',\n options.quality || 1\n );\n },\n\n /**\n * Returns true if specified type is identical to the type of an instance\n * @param {String} type Type to check against\n * @return {Boolean}\n */\n isType: function (type) {\n return arguments.length > 1\n ? Array.from(arguments).includes(this.type)\n : this.type === type;\n },\n\n /**\n * Returns complexity of an instance\n * @return {Number} complexity of this instance (is 1 unless subclassed)\n */\n complexity: function () {\n return 1;\n },\n\n /**\n * Returns a JSON representation of an instance\n * @return {Object} JSON\n */\n toJSON: function () {\n // delegate, not alias\n return this.toObject();\n },\n\n /**\n * Sets \"angle\" of an instance with centered rotation\n * @param {Number} angle Angle value (in degrees)\n * @return {fabric.Object} thisArg\n * @chainable\n */\n rotate: function (angle) {\n var shouldCenterOrigin =\n (this.originX !== 'center' || this.originY !== 'center') &&\n this.centeredRotation;\n\n if (shouldCenterOrigin) {\n this._setOriginToCenter();\n }\n\n this.set('angle', angle);\n\n if (shouldCenterOrigin) {\n this._resetOrigin();\n }\n\n return this;\n },\n\n /**\n * Centers object horizontally on canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n centerH: function () {\n this.canvas && this.canvas.centerObjectH(this);\n return this;\n },\n\n /**\n * Centers object horizontally on current viewport of canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n viewportCenterH: function () {\n this.canvas && this.canvas.viewportCenterObjectH(this);\n return this;\n },\n\n /**\n * Centers object vertically on canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n centerV: function () {\n this.canvas && this.canvas.centerObjectV(this);\n return this;\n },\n\n /**\n * Centers object vertically on current viewport of canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n viewportCenterV: function () {\n this.canvas && this.canvas.viewportCenterObjectV(this);\n return this;\n },\n\n /**\n * Centers object vertically and horizontally on canvas to which is was added last\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n center: function () {\n this.canvas && this.canvas.centerObject(this);\n return this;\n },\n\n /**\n * Centers object on current viewport of canvas to which it was added last.\n * You might need to call `setCoords` on an object after centering, to update controls area.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n viewportCenter: function () {\n this.canvas && this.canvas.viewportCenterObject(this);\n return this;\n },\n\n /**\n * This callback function is called by the parent group of an object every\n * time a non-delegated property changes on the group. It is passed the key\n * and value as parameters. Not adding in this function's signature to avoid\n * Travis build error about unused variables.\n */\n setOnGroup: function () {\n // implemented by sub-classes, as needed.\n },\n\n /**\n * Sets canvas globalCompositeOperation for specific object\n * custom composition operation for the particular object can be specified using globalCompositeOperation property\n * @param {CanvasRenderingContext2D} ctx Rendering canvas context\n */\n _setupCompositeOperation: function (ctx) {\n if (this.globalCompositeOperation) {\n ctx.globalCompositeOperation = this.globalCompositeOperation;\n }\n },\n\n /**\n * cancel instance's running animations\n * override if necessary to dispose artifacts such as `clipPath`\n */\n dispose: function () {\n // todo verify this.\n // runningAnimations is always truthy\n if (runningAnimations) {\n runningAnimations.cancelByTarget(this);\n }\n },\n }\n );\n\n fabric.util.createAccessors && fabric.util.createAccessors(fabric.Object);\n\n extend(fabric.Object.prototype, fabric.Observable);\n\n /**\n *\n * @param {Function} klass\n * @param {object} object\n * @param {object} [options]\n * @param {string} [options.extraParam] property to pass as first argument to the constructor\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Object._fromObject = function (\n klass,\n object,\n { extraParam, ...options } = {}\n ) {\n return enlivenObjectEnlivables(clone(object, true), options).then(\n (enlivedMap) => {\n // from the resulting enlived options, extract options.extraParam to arg0\n // to avoid accidental overrides later\n const { [extraParam]: arg0, ...rest } = { ...options, ...enlivedMap };\n return extraParam ? new klass(arg0, rest) : new klass(rest);\n }\n );\n };\n\n /**\n *\n * @static\n * @memberOf fabric.Object\n * @param {object} object\n * @param {object} [options]\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Object.fromObject = function (object, options) {\n return fabric.Object._fromObject(fabric.Object, object, options);\n };\n\n /**\n * Unique id used internally when creating SVG elements\n * @static\n * @memberOf fabric.Object\n * @type Number\n */\n fabric.Object.__uid = 0;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\n(function (global) {\n var fabric = global.fabric,\n degreesToRadians = fabric.util.degreesToRadians,\n originXOffset = {\n left: -0.5,\n center: 0,\n right: 0.5,\n },\n originYOffset = {\n top: -0.5,\n center: 0,\n bottom: 0.5,\n };\n\n /**\n * @typedef {number | 'left' | 'center' | 'right'} OriginX\n * @typedef {number | 'top' | 'center' | 'bottom'} OriginY\n */\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Resolves origin value relative to center\n * @private\n * @param {OriginX} originX\n * @returns number\n */\n resolveOriginX: function (originX) {\n return typeof originX === 'string'\n ? originXOffset[originX]\n : originX - 0.5;\n },\n\n /**\n * Resolves origin value relative to center\n * @private\n * @param {OriginY} originY\n * @returns number\n */\n resolveOriginY: function (originY) {\n return typeof originY === 'string'\n ? originYOffset[originY]\n : originY - 0.5;\n },\n\n /**\n * Translates the coordinates from a set of origin to another (based on the object's dimensions)\n * @param {Point} point The point which corresponds to the originX and originY params\n * @param {OriginX} fromOriginX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} fromOriginY Vertical origin: 'top', 'center' or 'bottom'\n * @param {OriginX} toOriginX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} toOriginY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n translateToGivenOrigin: function (\n point,\n fromOriginX,\n fromOriginY,\n toOriginX,\n toOriginY\n ) {\n var x = point.x,\n y = point.y,\n dim,\n offsetX =\n this.resolveOriginX(toOriginX) - this.resolveOriginX(fromOriginX),\n offsetY =\n this.resolveOriginY(toOriginY) - this.resolveOriginY(fromOriginY);\n\n if (offsetX || offsetY) {\n dim = this._getTransformedDimensions();\n x = point.x + offsetX * dim.x;\n y = point.y + offsetY * dim.y;\n }\n\n return new Point(x, y);\n },\n\n /**\n * Translates the coordinates from origin to center coordinates (based on the object's dimensions)\n * @param {Point} point The point which corresponds to the originX and originY params\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n translateToCenterPoint: function (point, originX, originY) {\n var p = this.translateToGivenOrigin(\n point,\n originX,\n originY,\n 'center',\n 'center'\n );\n if (this.angle) {\n return fabric.util.rotatePoint(\n p,\n point,\n degreesToRadians(this.angle)\n );\n }\n return p;\n },\n\n /**\n * Translates the coordinates from center to origin coordinates (based on the object's dimensions)\n * @param {Point} center The point which corresponds to center of the object\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n translateToOriginPoint: function (center, originX, originY) {\n var p = this.translateToGivenOrigin(\n center,\n 'center',\n 'center',\n originX,\n originY\n );\n if (this.angle) {\n return fabric.util.rotatePoint(\n p,\n center,\n degreesToRadians(this.angle)\n );\n }\n return p;\n },\n\n /**\n * Returns the center coordinates of the object relative to canvas\n * @return {Point}\n */\n getCenterPoint: function () {\n var relCenter = this.getRelativeCenterPoint();\n return this.group\n ? fabric.util.transformPoint(\n relCenter,\n this.group.calcTransformMatrix()\n )\n : relCenter;\n },\n\n /**\n * Returns the center coordinates of the object relative to it's containing group or null\n * @return {Point|null} point or null of object has no parent group\n */\n getCenterPointRelativeToParent: function () {\n return this.group ? this.getRelativeCenterPoint() : null;\n },\n\n /**\n * Returns the center coordinates of the object relative to it's parent\n * @return {Point}\n */\n getRelativeCenterPoint: function () {\n return this.translateToCenterPoint(\n new Point(this.left, this.top),\n this.originX,\n this.originY\n );\n },\n\n /**\n * Returns the coordinates of the object based on center coordinates\n * @param {Point} point The point which corresponds to the originX and originY params\n * @return {Point}\n */\n // getOriginPoint: function(center) {\n // return this.translateToOriginPoint(center, this.originX, this.originY);\n // },\n\n /**\n * Returns the coordinates of the object as if it has a different origin\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n getPointByOrigin: function (originX, originY) {\n var center = this.getRelativeCenterPoint();\n return this.translateToOriginPoint(center, originX, originY);\n },\n\n /**\n * Returns the normalized point (rotated relative to center) in local coordinates\n * @param {Point} point The point relative to instance coordinate system\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {Point}\n */\n normalizePoint: function (point, originX, originY) {\n var center = this.getRelativeCenterPoint(),\n p,\n p2;\n if (typeof originX !== 'undefined' && typeof originY !== 'undefined') {\n p = this.translateToGivenOrigin(\n center,\n 'center',\n 'center',\n originX,\n originY\n );\n } else {\n p = new Point(this.left, this.top);\n }\n\n p2 = new Point(point.x, point.y);\n if (this.angle) {\n p2 = fabric.util.rotatePoint(\n p2,\n center,\n -degreesToRadians(this.angle)\n );\n }\n return p2.subtract(p);\n },\n\n /**\n * Returns coordinates of a pointer relative to object's top left corner in object's plane\n * @param {Event} e Event to operate upon\n * @param {Object} [pointer] Pointer to operate upon (instead of event)\n * @return {Object} Coordinates of a pointer (x, y)\n */\n getLocalPointer: function (e, pointer) {\n pointer = pointer || this.canvas.getPointer(e);\n return fabric.util\n .transformPoint(\n new Point(pointer.x, pointer.y),\n fabric.util.invertTransform(this.calcTransformMatrix())\n )\n .add(new Point(this.width / 2, this.height / 2));\n },\n\n /**\n * Returns the point in global coordinates\n * @param {Point} The point relative to the local coordinate system\n * @return {Point}\n */\n // toGlobalPoint: function(point) {\n // return fabric.util.rotatePoint(point, this.getCenterPoint(), degreesToRadians(this.angle)).add(new Point(this.left, this.top));\n // },\n\n /**\n * Sets the position of the object taking into consideration the object's origin\n * @param {Point} pos The new position of the object\n * @param {OriginX} originX Horizontal origin: 'left', 'center' or 'right'\n * @param {OriginY} originY Vertical origin: 'top', 'center' or 'bottom'\n * @return {void}\n */\n setPositionByOrigin: function (pos, originX, originY) {\n var center = this.translateToCenterPoint(pos, originX, originY),\n position = this.translateToOriginPoint(\n center,\n this.originX,\n this.originY\n );\n this.set('left', position.x);\n this.set('top', position.y);\n },\n\n /**\n * @param {String} to One of 'left', 'center', 'right'\n */\n adjustPosition: function (to) {\n var angle = degreesToRadians(this.angle),\n hypotFull = this.getScaledWidth(),\n xFull = fabric.util.cos(angle) * hypotFull,\n yFull = fabric.util.sin(angle) * hypotFull,\n offsetFrom,\n offsetTo;\n\n //TODO: this function does not consider mixed situation like top, center.\n if (typeof this.originX === 'string') {\n offsetFrom = originXOffset[this.originX];\n } else {\n offsetFrom = this.originX - 0.5;\n }\n if (typeof to === 'string') {\n offsetTo = originXOffset[to];\n } else {\n offsetTo = to - 0.5;\n }\n this.left += xFull * (offsetTo - offsetFrom);\n this.top += yFull * (offsetTo - offsetFrom);\n this.setCoords();\n this.originX = to;\n },\n\n /**\n * Sets the origin/position of the object to it's center point\n * @private\n * @return {void}\n */\n _setOriginToCenter: function () {\n this._originalOriginX = this.originX;\n this._originalOriginY = this.originY;\n\n var center = this.getRelativeCenterPoint();\n\n this.originX = 'center';\n this.originY = 'center';\n\n this.left = center.x;\n this.top = center.y;\n },\n\n /**\n * Resets the origin/position of the object to it's original origin\n * @private\n * @return {void}\n */\n _resetOrigin: function () {\n var originPoint = this.translateToOriginPoint(\n this.getRelativeCenterPoint(),\n this._originalOriginX,\n this._originalOriginY\n );\n\n this.originX = this._originalOriginX;\n this.originY = this._originalOriginY;\n\n this.left = originPoint.x;\n this.top = originPoint.y;\n\n this._originalOriginX = null;\n this._originalOriginY = null;\n },\n\n /**\n * @private\n */\n _getLeftTopCoords: function () {\n return this.translateToOriginPoint(\n this.getRelativeCenterPoint(),\n 'left',\n 'top'\n );\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Intersection } from '../intersection.class';\nimport { Point } from '../point.class';\n\n(function (global) {\n function arrayFromCoords(coords) {\n return [\n new Point(coords.tl.x, coords.tl.y),\n new Point(coords.tr.x, coords.tr.y),\n new Point(coords.br.x, coords.br.y),\n new Point(coords.bl.x, coords.bl.y),\n ];\n }\n\n var fabric = global.fabric,\n util = fabric.util,\n degreesToRadians = util.degreesToRadians,\n multiplyMatrices = util.multiplyTransformMatrices,\n transformPoint = util.transformPoint;\n\n util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Describe object's corner position in canvas element coordinates.\n * properties are depending on control keys and padding the main controls.\n * each property is an object with x, y and corner.\n * The `corner` property contains in a similar manner the 4 points of the\n * interactive area of the corner.\n * The coordinates depends from the controls positionHandler and are used\n * to draw and locate controls\n * @memberOf fabric.Object.prototype\n */\n oCoords: null,\n\n /**\n * Describe object's corner position in canvas object absolute coordinates\n * properties are tl,tr,bl,br and describe the four main corner.\n * each property is an object with x, y, instance of Fabric.Point.\n * The coordinates depends from this properties: width, height, scaleX, scaleY\n * skewX, skewY, angle, strokeWidth, top, left.\n * Those coordinates are useful to understand where an object is. They get updated\n * with oCoords but they do not need to be updated when zoom or panning change.\n * The coordinates get updated with @method setCoords.\n * You can calculate them without updating with @method calcACoords();\n * @memberOf fabric.Object.prototype\n */\n aCoords: null,\n\n /**\n * Describe object's corner position in canvas element coordinates.\n * includes padding. Used of object detection.\n * set and refreshed with setCoords.\n * @memberOf fabric.Object.prototype\n */\n lineCoords: null,\n\n /**\n * storage for object transform matrix\n */\n ownMatrixCache: null,\n\n /**\n * storage for object full transform matrix\n */\n matrixCache: null,\n\n /**\n * custom controls interface\n * controls are added by default_controls.js\n */\n controls: {},\n\n /**\n * @returns {number} x position according to object's {@link fabric.Object#originX} property in canvas coordinate plane\n */\n getX: function () {\n return this.getXY().x;\n },\n\n /**\n * @param {number} value x position according to object's {@link fabric.Object#originX} property in canvas coordinate plane\n */\n setX: function (value) {\n this.setXY(this.getXY().setX(value));\n },\n\n /**\n * @returns {number} x position according to object's {@link fabric.Object#originX} property in parent's coordinate plane\\\n * if parent is canvas then this property is identical to {@link fabric.Object#getX}\n */\n getRelativeX: function () {\n return this.left;\n },\n\n /**\n * @param {number} value x position according to object's {@link fabric.Object#originX} property in parent's coordinate plane\\\n * if parent is canvas then this method is identical to {@link fabric.Object#setX}\n */\n setRelativeX: function (value) {\n this.left = value;\n },\n\n /**\n * @returns {number} y position according to object's {@link fabric.Object#originY} property in canvas coordinate plane\n */\n getY: function () {\n return this.getXY().y;\n },\n\n /**\n * @param {number} value y position according to object's {@link fabric.Object#originY} property in canvas coordinate plane\n */\n setY: function (value) {\n this.setXY(this.getXY().setY(value));\n },\n\n /**\n * @returns {number} y position according to object's {@link fabric.Object#originY} property in parent's coordinate plane\\\n * if parent is canvas then this property is identical to {@link fabric.Object#getY}\n */\n getRelativeY: function () {\n return this.top;\n },\n\n /**\n * @param {number} value y position according to object's {@link fabric.Object#originY} property in parent's coordinate plane\\\n * if parent is canvas then this property is identical to {@link fabric.Object#setY}\n */\n setRelativeY: function (value) {\n this.top = value;\n },\n\n /**\n * @returns {number} x position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in canvas coordinate plane\n */\n getXY: function () {\n var relativePosition = this.getRelativeXY();\n return this.group\n ? fabric.util.transformPoint(\n relativePosition,\n this.group.calcTransformMatrix()\n )\n : relativePosition;\n },\n\n /**\n * Set an object position to a particular point, the point is intended in absolute ( canvas ) coordinate.\n * You can specify {@link fabric.Object#originX} and {@link fabric.Object#originY} values,\n * that otherwise are the object's current values.\n * @example Set object's bottom left corner to point (5,5) on canvas\n * object.setXY(new Point(5, 5), 'left', 'bottom').\n * @param {Point} point position in canvas coordinate plane\n * @param {'left'|'center'|'right'|number} [originX] Horizontal origin: 'left', 'center' or 'right'\n * @param {'top'|'center'|'bottom'|number} [originY] Vertical origin: 'top', 'center' or 'bottom'\n */\n setXY: function (point, originX, originY) {\n if (this.group) {\n point = fabric.util.transformPoint(\n point,\n fabric.util.invertTransform(this.group.calcTransformMatrix())\n );\n }\n this.setRelativeXY(point, originX, originY);\n },\n\n /**\n * @returns {number} x position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in parent's coordinate plane\n */\n getRelativeXY: function () {\n return new Point(this.left, this.top);\n },\n\n /**\n * As {@link fabric.Object#setXY}, but in current parent's coordinate plane ( the current group if any or the canvas)\n * @param {Point} point position according to object's {@link fabric.Object#originX} {@link fabric.Object#originY} properties in parent's coordinate plane\n * @param {'left'|'center'|'right'|number} [originX] Horizontal origin: 'left', 'center' or 'right'\n * @param {'top'|'center'|'bottom'|number} [originY] Vertical origin: 'top', 'center' or 'bottom'\n */\n setRelativeXY: function (point, originX, originY) {\n this.setPositionByOrigin(\n point,\n originX || this.originX,\n originY || this.originY\n );\n },\n\n /**\n * return correct set of coordinates for intersection\n * this will return either aCoords or lineCoords.\n * @param {Boolean} absolute will return aCoords if true or lineCoords\n * @return {Object} {tl, tr, br, bl} points\n */\n _getCoords: function (absolute, calculate) {\n if (calculate) {\n return absolute ? this.calcACoords() : this.calcLineCoords();\n }\n if (!this.aCoords || !this.lineCoords) {\n this.setCoords(true);\n }\n return absolute ? this.aCoords : this.lineCoords;\n },\n\n /**\n * return correct set of coordinates for intersection\n * this will return either aCoords or lineCoords.\n * The coords are returned in an array.\n * @return {Array} [tl, tr, br, bl] of points\n */\n getCoords: function (absolute, calculate) {\n var coords = arrayFromCoords(this._getCoords(absolute, calculate));\n if (this.group) {\n var t = this.group.calcTransformMatrix();\n return coords.map(function (p) {\n return util.transformPoint(p, t);\n });\n }\n return coords;\n },\n\n /**\n * Checks if object intersects with an area formed by 2 points\n * @param {Object} pointTL top-left point of area\n * @param {Object} pointBR bottom-right point of area\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object intersects with an area formed by 2 points\n */\n intersectsWithRect: function (pointTL, pointBR, absolute, calculate) {\n var coords = this.getCoords(absolute, calculate),\n intersection = fabric.Intersection.intersectPolygonRectangle(\n coords,\n pointTL,\n pointBR\n );\n return intersection.status === 'Intersection';\n },\n\n /**\n * Checks if object intersects with another object\n * @param {Object} other Object to test\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object intersects with another object\n */\n intersectsWithObject: function (other, absolute, calculate) {\n var intersection = Intersection.intersectPolygonPolygon(\n this.getCoords(absolute, calculate),\n other.getCoords(absolute, calculate)\n );\n\n return (\n intersection.status === 'Intersection' ||\n intersection.status === 'Coincident' ||\n other.isContainedWithinObject(this, absolute, calculate) ||\n this.isContainedWithinObject(other, absolute, calculate)\n );\n },\n\n /**\n * Checks if object is fully contained within area of another object\n * @param {Object} other Object to test\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object is fully contained within area of another object\n */\n isContainedWithinObject: function (other, absolute, calculate) {\n var points = this.getCoords(absolute, calculate),\n otherCoords = absolute ? other.aCoords : other.lineCoords,\n i = 0,\n lines = other._getImageLines(otherCoords);\n for (; i < 4; i++) {\n if (!other.containsPoint(points[i], lines)) {\n return false;\n }\n }\n return true;\n },\n\n /**\n * Checks if object is fully contained within area formed by 2 points\n * @param {Object} pointTL top-left point of area\n * @param {Object} pointBR bottom-right point of area\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object is fully contained within area formed by 2 points\n */\n isContainedWithinRect: function (pointTL, pointBR, absolute, calculate) {\n var boundingRect = this.getBoundingRect(absolute, calculate);\n\n return (\n boundingRect.left >= pointTL.x &&\n boundingRect.left + boundingRect.width <= pointBR.x &&\n boundingRect.top >= pointTL.y &&\n boundingRect.top + boundingRect.height <= pointBR.y\n );\n },\n\n /**\n * Checks if point is inside the object\n * @param {Point} point Point to check against\n * @param {Object} [lines] object returned from @method _getImageLines\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if point is inside the object\n */\n containsPoint: function (point, lines, absolute, calculate) {\n var coords = this._getCoords(absolute, calculate),\n lines = lines || this._getImageLines(coords),\n xPoints = this._findCrossPoints(point, lines);\n // if xPoints is odd then point is inside the object\n return xPoints !== 0 && xPoints % 2 === 1;\n },\n\n /**\n * Checks if object is contained within the canvas with current viewportTransform\n * the check is done stopping at first point that appears on screen\n * @param {Boolean} [calculate] use coordinates of current position instead of .aCoords\n * @return {Boolean} true if object is fully or partially contained within canvas\n */\n isOnScreen: function (calculate) {\n if (!this.canvas) {\n return false;\n }\n var pointTL = this.canvas.vptCoords.tl,\n pointBR = this.canvas.vptCoords.br;\n var points = this.getCoords(true, calculate);\n // if some point is on screen, the object is on screen.\n if (\n points.some(function (point) {\n return (\n point.x <= pointBR.x &&\n point.x >= pointTL.x &&\n point.y <= pointBR.y &&\n point.y >= pointTL.y\n );\n })\n ) {\n return true;\n }\n // no points on screen, check intersection with absolute coordinates\n if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) {\n return true;\n }\n return this._containsCenterOfCanvas(pointTL, pointBR, calculate);\n },\n\n /**\n * Checks if the object contains the midpoint between canvas extremities\n * Does not make sense outside the context of isOnScreen and isPartiallyOnScreen\n * @private\n * @param {Fabric.Point} pointTL Top Left point\n * @param {Fabric.Point} pointBR Top Right point\n * @param {Boolean} calculate use coordinates of current position instead of .oCoords\n * @return {Boolean} true if the object contains the point\n */\n _containsCenterOfCanvas: function (pointTL, pointBR, calculate) {\n // worst case scenario the object is so big that contains the screen\n var centerPoint = {\n x: (pointTL.x + pointBR.x) / 2,\n y: (pointTL.y + pointBR.y) / 2,\n };\n if (this.containsPoint(centerPoint, null, true, calculate)) {\n return true;\n }\n return false;\n },\n\n /**\n * Checks if object is partially contained within the canvas with current viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords\n * @return {Boolean} true if object is partially contained within canvas\n */\n isPartiallyOnScreen: function (calculate) {\n if (!this.canvas) {\n return false;\n }\n var pointTL = this.canvas.vptCoords.tl,\n pointBR = this.canvas.vptCoords.br;\n if (this.intersectsWithRect(pointTL, pointBR, true, calculate)) {\n return true;\n }\n var allPointsAreOutside = this.getCoords(true, calculate).every(\n function (point) {\n return (\n (point.x >= pointBR.x || point.x <= pointTL.x) &&\n (point.y >= pointBR.y || point.y <= pointTL.y)\n );\n }\n );\n return (\n allPointsAreOutside &&\n this._containsCenterOfCanvas(pointTL, pointBR, calculate)\n );\n },\n\n /**\n * Method that returns an object with the object edges in it, given the coordinates of the corners\n * @private\n * @param {Object} oCoords Coordinates of the object corners\n */\n _getImageLines: function (oCoords) {\n var lines = {\n topline: {\n o: oCoords.tl,\n d: oCoords.tr,\n },\n rightline: {\n o: oCoords.tr,\n d: oCoords.br,\n },\n bottomline: {\n o: oCoords.br,\n d: oCoords.bl,\n },\n leftline: {\n o: oCoords.bl,\n d: oCoords.tl,\n },\n };\n\n // // debugging\n // if (this.canvas.contextTop) {\n // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2);\n // }\n\n return lines;\n },\n\n /**\n * Helper method to determine how many cross points are between the 4 object edges\n * and the horizontal line determined by a point on canvas\n * @private\n * @param {Point} point Point to check\n * @param {Object} lines Coordinates of the object being evaluated\n */\n // remove yi, not used but left code here just in case.\n _findCrossPoints: function (point, lines) {\n var b1,\n b2,\n a1,\n a2,\n xi, // yi,\n xcount = 0,\n iLine;\n\n for (var lineKey in lines) {\n iLine = lines[lineKey];\n // optimisation 1: line below point. no cross\n if (iLine.o.y < point.y && iLine.d.y < point.y) {\n continue;\n }\n // optimisation 2: line above point. no cross\n if (iLine.o.y >= point.y && iLine.d.y >= point.y) {\n continue;\n }\n // optimisation 3: vertical line case\n if (iLine.o.x === iLine.d.x && iLine.o.x >= point.x) {\n xi = iLine.o.x;\n // yi = point.y;\n }\n // calculate the intersection point\n else {\n b1 = 0;\n b2 = (iLine.d.y - iLine.o.y) / (iLine.d.x - iLine.o.x);\n a1 = point.y - b1 * point.x;\n a2 = iLine.o.y - b2 * iLine.o.x;\n\n xi = -(a1 - a2) / (b1 - b2);\n // yi = a1 + b1 * xi;\n }\n // dont count xi < point.x cases\n if (xi >= point.x) {\n xcount += 1;\n }\n // optimisation 4: specific for square images\n if (xcount === 2) {\n break;\n }\n }\n return xcount;\n },\n\n /**\n * Returns coordinates of object's bounding rectangle (left, top, width, height)\n * the box is intended as aligned to axis of canvas.\n * @param {Boolean} [absolute] use coordinates without viewportTransform\n * @param {Boolean} [calculate] use coordinates of current position instead of .oCoords / .aCoords\n * @return {Object} Object with left, top, width, height properties\n */\n getBoundingRect: function (absolute, calculate) {\n var coords = this.getCoords(absolute, calculate);\n return util.makeBoundingBoxFromPoints(coords);\n },\n\n /**\n * Returns width of an object's bounding box counting transformations\n * before 2.0 it was named getWidth();\n * @return {Number} width value\n */\n getScaledWidth: function () {\n return this._getTransformedDimensions().x;\n },\n\n /**\n * Returns height of an object bounding box counting transformations\n * before 2.0 it was named getHeight();\n * @return {Number} height value\n */\n getScaledHeight: function () {\n return this._getTransformedDimensions().y;\n },\n\n /**\n * Makes sure the scale is valid and modifies it if necessary\n * @private\n * @param {Number} value\n * @return {Number}\n */\n _constrainScale: function (value) {\n if (Math.abs(value) < this.minScaleLimit) {\n if (value < 0) {\n return -this.minScaleLimit;\n } else {\n return this.minScaleLimit;\n }\n } else if (value === 0) {\n return 0.0001;\n }\n return value;\n },\n\n /**\n * Scales an object (equally by x and y)\n * @param {Number} value Scale factor\n * @return {fabric.Object} thisArg\n * @chainable\n */\n scale: function (value) {\n this._set('scaleX', value);\n this._set('scaleY', value);\n return this.setCoords();\n },\n\n /**\n * Scales an object to a given width, with respect to bounding box (scaling by x/y equally)\n * @param {Number} value New width value\n * @param {Boolean} absolute ignore viewport\n * @return {fabric.Object} thisArg\n * @chainable\n */\n scaleToWidth: function (value, absolute) {\n // adjust to bounding rect factor so that rotated shapes would fit as well\n var boundingRectFactor =\n this.getBoundingRect(absolute).width / this.getScaledWidth();\n return this.scale(value / this.width / boundingRectFactor);\n },\n\n /**\n * Scales an object to a given height, with respect to bounding box (scaling by x/y equally)\n * @param {Number} value New height value\n * @param {Boolean} absolute ignore viewport\n * @return {fabric.Object} thisArg\n * @chainable\n */\n scaleToHeight: function (value, absolute) {\n // adjust to bounding rect factor so that rotated shapes would fit as well\n var boundingRectFactor =\n this.getBoundingRect(absolute).height / this.getScaledHeight();\n return this.scale(value / this.height / boundingRectFactor);\n },\n\n calcLineCoords: function () {\n var vpt = this.getViewportTransform(),\n padding = this.padding,\n angle = degreesToRadians(this.getTotalAngle()),\n cos = util.cos(angle),\n sin = util.sin(angle),\n cosP = cos * padding,\n sinP = sin * padding,\n cosPSinP = cosP + sinP,\n cosPMinusSinP = cosP - sinP,\n aCoords = this.calcACoords();\n\n var lineCoords = {\n tl: transformPoint(aCoords.tl, vpt),\n tr: transformPoint(aCoords.tr, vpt),\n bl: transformPoint(aCoords.bl, vpt),\n br: transformPoint(aCoords.br, vpt),\n };\n\n if (padding) {\n lineCoords.tl.x -= cosPMinusSinP;\n lineCoords.tl.y -= cosPSinP;\n lineCoords.tr.x += cosPSinP;\n lineCoords.tr.y -= cosPMinusSinP;\n lineCoords.bl.x -= cosPSinP;\n lineCoords.bl.y += cosPMinusSinP;\n lineCoords.br.x += cosPMinusSinP;\n lineCoords.br.y += cosPSinP;\n }\n\n return lineCoords;\n },\n\n calcOCoords: function () {\n var vpt = this.getViewportTransform(),\n center = this.getCenterPoint(),\n tMatrix = [1, 0, 0, 1, center.x, center.y],\n rMatrix = util.calcRotateMatrix({\n angle:\n this.getTotalAngle() - (!!this.group && this.flipX ? 180 : 0),\n }),\n positionMatrix = multiplyMatrices(tMatrix, rMatrix),\n startMatrix = multiplyMatrices(vpt, positionMatrix),\n finalMatrix = multiplyMatrices(startMatrix, [\n 1 / vpt[0],\n 0,\n 0,\n 1 / vpt[3],\n 0,\n 0,\n ]),\n transformOptions = this.group\n ? fabric.util.qrDecompose(this.calcTransformMatrix())\n : undefined,\n dim = this._calculateCurrentDimensions(transformOptions),\n coords = {};\n this.forEachControl(function (control, key, fabricObject) {\n coords[key] = control.positionHandler(dim, finalMatrix, fabricObject);\n });\n\n // debug code\n /*\n var canvas = this.canvas;\n setTimeout(function () {\n if (!canvas) return;\n canvas.contextTop.clearRect(0, 0, 700, 700);\n canvas.contextTop.fillStyle = 'green';\n Object.keys(coords).forEach(function(key) {\n var control = coords[key];\n canvas.contextTop.fillRect(control.x, control.y, 3, 3);\n });\n }, 50);\n */\n return coords;\n },\n\n calcACoords: function () {\n var rotateMatrix = util.calcRotateMatrix({ angle: this.angle }),\n center = this.getRelativeCenterPoint(),\n translateMatrix = [1, 0, 0, 1, center.x, center.y],\n finalMatrix = multiplyMatrices(translateMatrix, rotateMatrix),\n dim = this._getTransformedDimensions(),\n w = dim.x / 2,\n h = dim.y / 2;\n return {\n // corners\n tl: transformPoint({ x: -w, y: -h }, finalMatrix),\n tr: transformPoint({ x: w, y: -h }, finalMatrix),\n bl: transformPoint({ x: -w, y: h }, finalMatrix),\n br: transformPoint({ x: w, y: h }, finalMatrix),\n };\n },\n\n /**\n * Sets corner and controls position coordinates based on current angle, width and height, left and top.\n * oCoords are used to find the corners\n * aCoords are used to quickly find an object on the canvas\n * lineCoords are used to quickly find object during pointer events.\n * See {@link https://github.com/fabricjs/fabric.js/wiki/When-to-call-setCoords} and {@link http://fabricjs.com/fabric-gotchas}\n *\n * @param {Boolean} [skipCorners] skip calculation of oCoords.\n * @return {fabric.Object} thisArg\n * @chainable\n */\n setCoords: function (skipCorners) {\n this.aCoords = this.calcACoords();\n // in case we are in a group, for how the inner group target check works,\n // lineCoords are exactly aCoords. Since the vpt gets absorbed by the normalized pointer.\n this.lineCoords = this.group ? this.aCoords : this.calcLineCoords();\n if (skipCorners) {\n return this;\n }\n // set coordinates of the draggable boxes in the corners used to scale/rotate the image\n this.oCoords = this.calcOCoords();\n this._setCornerCoords && this._setCornerCoords();\n return this;\n },\n\n transformMatrixKey: function (skipGroup) {\n var sep = '_',\n prefix = '';\n if (!skipGroup && this.group) {\n prefix = this.group.transformMatrixKey(skipGroup) + sep;\n }\n return (\n prefix +\n this.top +\n sep +\n this.left +\n sep +\n this.scaleX +\n sep +\n this.scaleY +\n sep +\n this.skewX +\n sep +\n this.skewY +\n sep +\n this.angle +\n sep +\n this.originX +\n sep +\n this.originY +\n sep +\n this.width +\n sep +\n this.height +\n sep +\n this.strokeWidth +\n this.flipX +\n this.flipY\n );\n },\n\n /**\n * calculate transform matrix that represents the current transformations from the\n * object's properties.\n * @param {Boolean} [skipGroup] return transform matrix for object not counting parent transformations\n * There are some situation in which this is useful to avoid the fake rotation.\n * @return {Array} transform matrix for the object\n */\n calcTransformMatrix: function (skipGroup) {\n var matrix = this.calcOwnMatrix();\n if (skipGroup || !this.group) {\n return matrix;\n }\n var key = this.transformMatrixKey(skipGroup),\n cache = this.matrixCache || (this.matrixCache = {});\n if (cache.key === key) {\n return cache.value;\n }\n if (this.group) {\n matrix = multiplyMatrices(\n this.group.calcTransformMatrix(false),\n matrix\n );\n }\n cache.key = key;\n cache.value = matrix;\n return matrix;\n },\n\n /**\n * calculate transform matrix that represents the current transformations from the\n * object's properties, this matrix does not include the group transformation\n * @return {Array} transform matrix for the object\n */\n calcOwnMatrix: function () {\n var key = this.transformMatrixKey(true),\n cache = this.ownMatrixCache || (this.ownMatrixCache = {});\n if (cache.key === key) {\n return cache.value;\n }\n var center = this.getRelativeCenterPoint(),\n options = {\n angle: this.angle,\n translateX: center.x,\n translateY: center.y,\n scaleX: this.scaleX,\n scaleY: this.scaleY,\n skewX: this.skewX,\n skewY: this.skewY,\n flipX: this.flipX,\n flipY: this.flipY,\n };\n cache.key = key;\n cache.value = util.composeMatrix(options);\n return cache.value;\n },\n\n /**\n * Calculate object dimensions from its properties\n * @private\n * @returns {Point} dimensions\n */\n _getNonTransformedDimensions: function () {\n return new Point(this.width, this.height).scalarAdd(this.strokeWidth);\n },\n\n /**\n * Calculate object bounding box dimensions from its properties scale, skew.\n * @param {Object} [options]\n * @param {Number} [options.scaleX]\n * @param {Number} [options.scaleY]\n * @param {Number} [options.skewX]\n * @param {Number} [options.skewY]\n * @private\n * @returns {Point} dimensions\n */\n _getTransformedDimensions: function (options) {\n options = Object.assign(\n {\n scaleX: this.scaleX,\n scaleY: this.scaleY,\n skewX: this.skewX,\n skewY: this.skewY,\n width: this.width,\n height: this.height,\n strokeWidth: this.strokeWidth,\n },\n options || {}\n );\n // stroke is applied before/after transformations are applied according to `strokeUniform`\n var preScalingStrokeValue,\n postScalingStrokeValue,\n strokeWidth = options.strokeWidth;\n if (this.strokeUniform) {\n preScalingStrokeValue = 0;\n postScalingStrokeValue = strokeWidth;\n } else {\n preScalingStrokeValue = strokeWidth;\n postScalingStrokeValue = 0;\n }\n var dimX = options.width + preScalingStrokeValue,\n dimY = options.height + preScalingStrokeValue,\n finalDimensions,\n noSkew = options.skewX === 0 && options.skewY === 0;\n if (noSkew) {\n finalDimensions = new Point(\n dimX * options.scaleX,\n dimY * options.scaleY\n );\n } else {\n var bbox = util.sizeAfterTransform(dimX, dimY, options);\n finalDimensions = new Point(bbox.x, bbox.y);\n }\n\n return finalDimensions.scalarAdd(postScalingStrokeValue);\n },\n\n /**\n * Calculate object dimensions for controls box, including padding and canvas zoom.\n * and active selection\n * @private\n * @param {object} [options] transform options\n * @returns {Point} dimensions\n */\n _calculateCurrentDimensions: function (options) {\n var vpt = this.getViewportTransform(),\n dim = this._getTransformedDimensions(options),\n p = transformPoint(dim, vpt, true);\n return p.scalarAdd(2 * this.padding);\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Checks if object is decendant of target\n * Should be used instead of @link {fabric.Collection.contains} for performance reasons\n * @param {fabric.Object|fabric.StaticCanvas} target\n * @returns {boolean}\n */\n isDescendantOf: function (target) {\n var parent = this.group || this.canvas;\n while (parent) {\n if (target === parent) {\n return true;\n } else if (parent instanceof fabric.StaticCanvas) {\n // happens after all parents were traversed through without a match\n return false;\n }\n parent = parent.group || parent.canvas;\n }\n return false;\n },\n\n /**\n *\n * @typedef {fabric.Object[] | [...fabric.Object[], fabric.StaticCanvas]} Ancestors\n *\n * @param {boolean} [strict] returns only ancestors that are objects (without canvas)\n * @returns {Ancestors} ancestors from bottom to top\n */\n getAncestors: function (strict) {\n var ancestors = [];\n var parent = this.group || (strict ? undefined : this.canvas);\n while (parent) {\n ancestors.push(parent);\n parent = parent.group || (strict ? undefined : parent.canvas);\n }\n return ancestors;\n },\n\n /**\n * Returns an object that represent the ancestry situation.\n *\n * @typedef {object} AncestryComparison\n * @property {Ancestors} common ancestors of `this` and `other` (may include `this` | `other`)\n * @property {Ancestors} fork ancestors that are of `this` only\n * @property {Ancestors} otherFork ancestors that are of `other` only\n *\n * @param {fabric.Object} other\n * @param {boolean} [strict] finds only ancestors that are objects (without canvas)\n * @returns {AncestryComparison | undefined}\n *\n */\n findCommonAncestors: function (other, strict) {\n if (this === other) {\n return {\n fork: [],\n otherFork: [],\n common: [this].concat(this.getAncestors(strict)),\n };\n } else if (!other) {\n // meh, warn and inform, and not my issue.\n // the argument is NOT optional, we can't end up here.\n return undefined;\n }\n var ancestors = this.getAncestors(strict);\n var otherAncestors = other.getAncestors(strict);\n // if `this` has no ancestors and `this` is top ancestor of `other` we must handle the following case\n if (\n ancestors.length === 0 &&\n otherAncestors.length > 0 &&\n this === otherAncestors[otherAncestors.length - 1]\n ) {\n return {\n fork: [],\n otherFork: [other].concat(\n otherAncestors.slice(0, otherAncestors.length - 1)\n ),\n common: [this],\n };\n }\n // compare ancestors\n for (var i = 0, ancestor; i < ancestors.length; i++) {\n ancestor = ancestors[i];\n if (ancestor === other) {\n return {\n fork: [this].concat(ancestors.slice(0, i)),\n otherFork: [],\n common: ancestors.slice(i),\n };\n }\n for (var j = 0; j < otherAncestors.length; j++) {\n if (this === otherAncestors[j]) {\n return {\n fork: [],\n otherFork: [other].concat(otherAncestors.slice(0, j)),\n common: [this].concat(ancestors),\n };\n }\n if (ancestor === otherAncestors[j]) {\n return {\n fork: [this].concat(ancestors.slice(0, i)),\n otherFork: [other].concat(otherAncestors.slice(0, j)),\n common: ancestors.slice(i),\n };\n }\n }\n }\n // nothing shared\n return {\n fork: [this].concat(ancestors),\n otherFork: [other].concat(otherAncestors),\n common: [],\n };\n },\n\n /**\n *\n * @param {fabric.Object} other\n * @param {boolean} [strict] checks only ancestors that are objects (without canvas)\n * @returns {boolean}\n */\n hasCommonAncestors: function (other, strict) {\n var commonAncestors = this.findCommonAncestors(other, strict);\n return commonAncestors && !!commonAncestors.ancestors.length;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Moves an object to the bottom of the stack of drawn objects\n * @return {fabric.Object} thisArg\n * @chainable\n */\n sendToBack: function () {\n if (this.group) {\n fabric.StaticCanvas.prototype.sendToBack.call(this.group, this);\n } else if (this.canvas) {\n this.canvas.sendToBack(this);\n }\n return this;\n },\n\n /**\n * Moves an object to the top of the stack of drawn objects\n * @return {fabric.Object} thisArg\n * @chainable\n */\n bringToFront: function () {\n if (this.group) {\n fabric.StaticCanvas.prototype.bringToFront.call(this.group, this);\n } else if (this.canvas) {\n this.canvas.bringToFront(this);\n }\n return this;\n },\n\n /**\n * Moves an object down in stack of drawn objects\n * @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object\n * @return {fabric.Object} thisArg\n * @chainable\n */\n sendBackwards: function (intersecting) {\n if (this.group) {\n fabric.StaticCanvas.prototype.sendBackwards.call(\n this.group,\n this,\n intersecting\n );\n } else if (this.canvas) {\n this.canvas.sendBackwards(this, intersecting);\n }\n return this;\n },\n\n /**\n * Moves an object up in stack of drawn objects\n * @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object\n * @return {fabric.Object} thisArg\n * @chainable\n */\n bringForward: function (intersecting) {\n if (this.group) {\n fabric.StaticCanvas.prototype.bringForward.call(\n this.group,\n this,\n intersecting\n );\n } else if (this.canvas) {\n this.canvas.bringForward(this, intersecting);\n }\n return this;\n },\n\n /**\n * Moves an object to specified level in stack of drawn objects\n * @param {Number} index New position of object\n * @return {fabric.Object} thisArg\n * @chainable\n */\n moveTo: function (index) {\n if (this.group && this.group.type !== 'activeSelection') {\n fabric.StaticCanvas.prototype.moveTo.call(this.group, this, index);\n } else if (this.canvas) {\n this.canvas.moveTo(this, index);\n }\n return this;\n },\n\n /**\n *\n * @param {fabric.Object} other object to compare against\n * @returns {boolean | undefined} if objects do not share a common ancestor or they are strictly equal it is impossible to determine which is in front of the other; in such cases the function returns `undefined`\n */\n isInFrontOf: function (other) {\n if (this === other) {\n return undefined;\n }\n var ancestorData = this.findCommonAncestors(other);\n if (!ancestorData) {\n return undefined;\n }\n if (ancestorData.fork.includes(other)) {\n return true;\n }\n if (ancestorData.otherFork.includes(this)) {\n return false;\n }\n var firstCommonAncestor = ancestorData.common[0];\n if (!firstCommonAncestor) {\n return undefined;\n }\n var headOfFork = ancestorData.fork.pop(),\n headOfOtherFork = ancestorData.otherFork.pop(),\n thisIndex = firstCommonAncestor._objects.indexOf(headOfFork),\n otherIndex = firstCommonAncestor._objects.indexOf(headOfOtherFork);\n return thisIndex > -1 && thisIndex > otherIndex;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Color } from '../color';\nimport { config } from '../config';\n\n/* _TO_SVG_START_ */\n(function (global) {\n var fabric = global.fabric;\n function getSvgColorString(prop, value) {\n if (!value) {\n return prop + ': none; ';\n } else if (value.toLive) {\n return prop + ': url(#SVGID_' + value.id + '); ';\n } else {\n var color = new Color(value),\n str = prop + ': ' + color.toRgb() + '; ',\n opacity = color.getAlpha();\n if (opacity !== 1) {\n //change the color in rgb + opacity\n str += prop + '-opacity: ' + opacity.toString() + '; ';\n }\n return str;\n }\n }\n\n var toFixed = (fabric = global.fabric),\n toFixed = fabric.util.toFixed;\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Returns styles-string for svg-export\n * @param {Boolean} skipShadow a boolean to skip shadow filter output\n * @return {String}\n */\n getSvgStyles: function (skipShadow) {\n var fillRule = this.fillRule ? this.fillRule : 'nonzero',\n strokeWidth = this.strokeWidth ? this.strokeWidth : '0',\n strokeDashArray = this.strokeDashArray\n ? this.strokeDashArray.join(' ')\n : 'none',\n strokeDashOffset = this.strokeDashOffset\n ? this.strokeDashOffset\n : '0',\n strokeLineCap = this.strokeLineCap ? this.strokeLineCap : 'butt',\n strokeLineJoin = this.strokeLineJoin ? this.strokeLineJoin : 'miter',\n strokeMiterLimit = this.strokeMiterLimit\n ? this.strokeMiterLimit\n : '4',\n opacity = typeof this.opacity !== 'undefined' ? this.opacity : '1',\n visibility = this.visible ? '' : ' visibility: hidden;',\n filter = skipShadow ? '' : this.getSvgFilter(),\n fill = getSvgColorString('fill', this.fill),\n stroke = getSvgColorString('stroke', this.stroke);\n\n return [\n stroke,\n 'stroke-width: ',\n strokeWidth,\n '; ',\n 'stroke-dasharray: ',\n strokeDashArray,\n '; ',\n 'stroke-linecap: ',\n strokeLineCap,\n '; ',\n 'stroke-dashoffset: ',\n strokeDashOffset,\n '; ',\n 'stroke-linejoin: ',\n strokeLineJoin,\n '; ',\n 'stroke-miterlimit: ',\n strokeMiterLimit,\n '; ',\n fill,\n 'fill-rule: ',\n fillRule,\n '; ',\n 'opacity: ',\n opacity,\n ';',\n filter,\n visibility,\n ].join('');\n },\n\n /**\n * Returns styles-string for svg-export\n * @param {Object} style the object from which to retrieve style properties\n * @param {Boolean} useWhiteSpace a boolean to include an additional attribute in the style.\n * @return {String}\n */\n getSvgSpanStyles: function (style, useWhiteSpace) {\n var term = '; ';\n var fontFamily = style.fontFamily\n ? 'font-family: ' +\n (style.fontFamily.indexOf(\"'\") === -1 &&\n style.fontFamily.indexOf('\"') === -1\n ? \"'\" + style.fontFamily + \"'\"\n : style.fontFamily) +\n term\n : '';\n var strokeWidth = style.strokeWidth\n ? 'stroke-width: ' + style.strokeWidth + term\n : '',\n fontFamily = fontFamily,\n fontSize = style.fontSize\n ? 'font-size: ' + style.fontSize + 'px' + term\n : '',\n fontStyle = style.fontStyle\n ? 'font-style: ' + style.fontStyle + term\n : '',\n fontWeight = style.fontWeight\n ? 'font-weight: ' + style.fontWeight + term\n : '',\n fill = style.fill ? getSvgColorString('fill', style.fill) : '',\n stroke = style.stroke\n ? getSvgColorString('stroke', style.stroke)\n : '',\n textDecoration = this.getSvgTextDecoration(style),\n deltaY = style.deltaY\n ? 'baseline-shift: ' + -style.deltaY + '; '\n : '';\n if (textDecoration) {\n textDecoration = 'text-decoration: ' + textDecoration + term;\n }\n\n return [\n stroke,\n strokeWidth,\n fontFamily,\n fontSize,\n fontStyle,\n fontWeight,\n textDecoration,\n fill,\n deltaY,\n useWhiteSpace ? 'white-space: pre; ' : '',\n ].join('');\n },\n\n /**\n * Returns text-decoration property for svg-export\n * @param {Object} style the object from which to retrieve style properties\n * @return {String}\n */\n getSvgTextDecoration: function (style) {\n return ['overline', 'underline', 'line-through']\n .filter(function (decoration) {\n return style[decoration.replace('-', '')];\n })\n .join(' ');\n },\n\n /**\n * Returns filter for svg shadow\n * @return {String}\n */\n getSvgFilter: function () {\n return this.shadow ? 'filter: url(#SVGID_' + this.shadow.id + ');' : '';\n },\n\n /**\n * Returns id attribute for svg output\n * @return {String}\n */\n getSvgCommons: function () {\n return [\n this.id ? 'id=\"' + this.id + '\" ' : '',\n this.clipPath\n ? 'clip-path=\"url(#' + this.clipPath.clipPathId + ')\" '\n : '',\n ].join('');\n },\n\n /**\n * Returns transform-string for svg-export\n * @param {Boolean} use the full transform or the single object one.\n * @return {String}\n */\n getSvgTransform: function (full, additionalTransform) {\n var transform = full\n ? this.calcTransformMatrix()\n : this.calcOwnMatrix(),\n svgTransform = 'transform=\"' + fabric.util.matrixToSVG(transform);\n return svgTransform + (additionalTransform || '') + '\" ';\n },\n\n _setSVGBg: function (textBgRects) {\n if (this.backgroundColor) {\n var NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n textBgRects.push(\n '\\t\\t\\n'\n );\n }\n },\n\n /**\n * Returns svg representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toSVG: function (reviver) {\n return this._createBaseSVGMarkup(this._toSVG(reviver), {\n reviver: reviver,\n });\n },\n\n /**\n * Returns svg clipPath representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toClipPathSVG: function (reviver) {\n return (\n '\\t' +\n this._createBaseClipPathSVGMarkup(this._toSVG(reviver), {\n reviver: reviver,\n })\n );\n },\n\n /**\n * @private\n */\n _createBaseClipPathSVGMarkup: function (objectMarkup, options) {\n options = options || {};\n var reviver = options.reviver,\n additionalTransform = options.additionalTransform || '',\n commonPieces = [\n this.getSvgTransform(true, additionalTransform),\n this.getSvgCommons(),\n ].join(''),\n // insert commons in the markup, style and svgCommons\n index = objectMarkup.indexOf('COMMON_PARTS');\n objectMarkup[index] = commonPieces;\n return reviver ? reviver(objectMarkup.join('')) : objectMarkup.join('');\n },\n\n /**\n * @private\n */\n _createBaseSVGMarkup: function (objectMarkup, options) {\n options = options || {};\n var noStyle = options.noStyle,\n reviver = options.reviver,\n styleInfo = noStyle ? '' : 'style=\"' + this.getSvgStyles() + '\" ',\n shadowInfo = options.withShadow\n ? 'style=\"' + this.getSvgFilter() + '\" '\n : '',\n clipPath = this.clipPath,\n vectorEffect = this.strokeUniform\n ? 'vector-effect=\"non-scaling-stroke\" '\n : '',\n absoluteClipPath = clipPath && clipPath.absolutePositioned,\n stroke = this.stroke,\n fill = this.fill,\n shadow = this.shadow,\n commonPieces,\n markup = [],\n clipPathMarkup,\n // insert commons in the markup, style and svgCommons\n index = objectMarkup.indexOf('COMMON_PARTS'),\n additionalTransform = options.additionalTransform;\n if (clipPath) {\n clipPath.clipPathId = 'CLIPPATH_' + fabric.Object.__uid++;\n clipPathMarkup =\n '\\n' +\n clipPath.toClipPathSVG(reviver) +\n '\\n';\n }\n if (absoluteClipPath) {\n markup.push('\\n');\n }\n markup.push(\n '\\n'\n );\n commonPieces = [\n styleInfo,\n vectorEffect,\n noStyle ? '' : this.addPaintOrder(),\n ' ',\n additionalTransform ? 'transform=\"' + additionalTransform + '\" ' : '',\n ].join('');\n objectMarkup[index] = commonPieces;\n if (fill && fill.toLive) {\n markup.push(fill.toSVG(this));\n }\n if (stroke && stroke.toLive) {\n markup.push(stroke.toSVG(this));\n }\n if (shadow) {\n markup.push(shadow.toSVG(this));\n }\n if (clipPath) {\n markup.push(clipPathMarkup);\n }\n markup.push(objectMarkup.join(''));\n markup.push('\\n');\n absoluteClipPath && markup.push('\\n');\n return reviver ? reviver(markup.join('')) : markup.join('');\n },\n\n addPaintOrder: function () {\n return this.paintFirst !== 'fill'\n ? ' paint-order=\"' + this.paintFirst + '\" '\n : '';\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n/* _TO_SVG_END_ */\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n extend = fabric.util.object.extend,\n originalSet = 'stateProperties';\n\n /*\n Depends on `stateProperties`\n */\n function saveProps(origin, destination, props) {\n var tmpObj = {},\n deep = true;\n props.forEach(function (prop) {\n tmpObj[prop] = origin[prop];\n });\n\n extend(origin[destination], tmpObj, deep);\n }\n\n function _isEqual(origValue, currentValue, firstPass) {\n if (origValue === currentValue) {\n // if the objects are identical, return\n return true;\n } else if (Array.isArray(origValue)) {\n if (\n !Array.isArray(currentValue) ||\n origValue.length !== currentValue.length\n ) {\n return false;\n }\n for (var i = 0, len = origValue.length; i < len; i++) {\n if (!_isEqual(origValue[i], currentValue[i])) {\n return false;\n }\n }\n return true;\n } else if (origValue && typeof origValue === 'object') {\n var keys = Object.keys(origValue),\n key;\n if (\n !currentValue ||\n typeof currentValue !== 'object' ||\n (!firstPass && keys.length !== Object.keys(currentValue).length)\n ) {\n return false;\n }\n for (var i = 0, len = keys.length; i < len; i++) {\n key = keys[i];\n // since clipPath is in the statefull cache list and the clipPath objects\n // would be iterated as an object, this would lead to possible infinite recursion\n // we do not want to compare those.\n if (key === 'canvas' || key === 'group') {\n continue;\n }\n if (!_isEqual(origValue[key], currentValue[key])) {\n return false;\n }\n }\n return true;\n }\n }\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Returns true if object state (one of its state properties) was changed\n * @param {String} [propertySet] optional name for the set of property we want to save\n * @return {Boolean} true if instance' state has changed since `{@link fabric.Object#saveState}` was called\n */\n hasStateChanged: function (propertySet) {\n propertySet = propertySet || originalSet;\n var dashedPropertySet = '_' + propertySet;\n if (\n Object.keys(this[dashedPropertySet]).length < this[propertySet].length\n ) {\n return true;\n }\n return !_isEqual(this[dashedPropertySet], this, true);\n },\n\n /**\n * Saves state of an object\n * @param {Object} [options] Object with additional `stateProperties` array to include when saving state\n * @return {fabric.Object} thisArg\n */\n saveState: function (options) {\n var propertySet = (options && options.propertySet) || originalSet,\n destination = '_' + propertySet;\n if (!this[destination]) {\n return this.setupState(options);\n }\n saveProps(this, destination, this[propertySet]);\n if (options && options.stateProperties) {\n saveProps(this, destination, options.stateProperties);\n }\n return this;\n },\n\n /**\n * Setups state of an object\n * @param {Object} [options] Object with additional `stateProperties` array to include when saving state\n * @return {fabric.Object} thisArg\n */\n setupState: function (options) {\n options = options || {};\n var propertySet = options.propertySet || originalSet;\n options.propertySet = propertySet;\n this['_' + propertySet] = {};\n this.saveState(options);\n return this;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\n(function (global) {\n var fabric = global.fabric,\n degreesToRadians = fabric.util.degreesToRadians;\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Determines which corner has been clicked\n * @private\n * @param {Object} pointer The pointer indicating the mouse position\n * @return {String|Boolean} corner code (tl, tr, bl, br, etc.), or false if nothing is found\n */\n _findTargetCorner: function (pointer, forTouch) {\n if (\n !this.hasControls ||\n !this.canvas ||\n this.canvas._activeObject !== this\n ) {\n return false;\n }\n var xPoints,\n lines,\n keys = Object.keys(this.oCoords),\n j = keys.length - 1,\n i;\n this.__corner = 0;\n\n // cycle in reverse order so we pick first the one on top\n for (; j >= 0; j--) {\n i = keys[j];\n if (!this.isControlVisible(i)) {\n continue;\n }\n\n lines = this._getImageLines(\n forTouch ? this.oCoords[i].touchCorner : this.oCoords[i].corner\n );\n // // debugging\n //\n // this.canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2);\n //\n // this.canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2);\n // this.canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2);\n\n xPoints = this._findCrossPoints(pointer, lines);\n if (xPoints !== 0 && xPoints % 2 === 1) {\n this.__corner = i;\n return i;\n }\n }\n return false;\n },\n\n /**\n * Calls a function for each control. The function gets called,\n * with the control, the object that is calling the iterator and the control's key\n * @param {Function} fn function to iterate over the controls over\n */\n forEachControl: function (fn) {\n for (var i in this.controls) {\n fn(this.controls[i], i, this);\n }\n },\n\n /**\n * Sets the coordinates of the draggable boxes in the corners of\n * the image used to scale/rotate it.\n * note: if we would switch to ROUND corner area, all of this would disappear.\n * everything would resolve to a single point and a pythagorean theorem for the distance\n * @private\n */\n _setCornerCoords: function () {\n var coords = this.oCoords;\n\n for (var control in coords) {\n var controlObject = this.controls[control];\n coords[control].corner = controlObject.calcCornerCoords(\n this.angle,\n this.cornerSize,\n coords[control].x,\n coords[control].y,\n false\n );\n coords[control].touchCorner = controlObject.calcCornerCoords(\n this.angle,\n this.touchCornerSize,\n coords[control].x,\n coords[control].y,\n true\n );\n }\n },\n\n /**\n * Draws a colored layer behind the object, inside its selection borders.\n * Requires public options: padding, selectionBackgroundColor\n * this function is called when the context is transformed\n * has checks to be skipped when the object is on a staticCanvas\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @return {fabric.Object} thisArg\n * @chainable\n */\n drawSelectionBackground: function (ctx) {\n if (\n !this.selectionBackgroundColor ||\n (this.canvas && !this.canvas.interactive) ||\n (this.canvas && this.canvas._activeObject !== this)\n ) {\n return this;\n }\n ctx.save();\n var center = this.getRelativeCenterPoint(),\n wh = this._calculateCurrentDimensions(),\n vpt = this.canvas.viewportTransform;\n ctx.translate(center.x, center.y);\n ctx.scale(1 / vpt[0], 1 / vpt[3]);\n ctx.rotate(degreesToRadians(this.angle));\n ctx.fillStyle = this.selectionBackgroundColor;\n ctx.fillRect(-wh.x / 2, -wh.y / 2, wh.x, wh.y);\n ctx.restore();\n return this;\n },\n\n /**\n * @public override this function in order to customize the drawing of the control box, e.g. rounded corners, different border style.\n * @param {CanvasRenderingContext2D} ctx ctx is rotated and translated so that (0,0) is at object's center\n * @param {Point} size the control box size used\n */\n strokeBorders: function (ctx, size) {\n ctx.strokeRect(-size.x / 2, -size.y / 2, size.x, size.y);\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @param {Point} size\n * @param {Object} styleOverride object to override the object style\n */\n _drawBorders: function (ctx, size, styleOverride) {\n var options = Object.assign(\n {\n hasControls: this.hasControls,\n borderColor: this.borderColor,\n borderDashArray: this.borderDashArray,\n },\n styleOverride || {}\n );\n ctx.save();\n ctx.strokeStyle = options.borderColor;\n this._setLineDash(ctx, options.borderDashArray);\n this.strokeBorders(ctx, size);\n options.hasControls && this.drawControlsConnectingLines(ctx, size);\n ctx.restore();\n },\n\n /**\n * Draws borders of an object's bounding box.\n * Requires public properties: width, height\n * Requires public options: padding, borderColor\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @param {object} options object representing current object parameters\n * @param {Object} [styleOverride] object to override the object style\n * @return {fabric.Object} thisArg\n * @chainable\n */\n drawBorders: function (ctx, options, styleOverride) {\n var size;\n if ((styleOverride && styleOverride.forActiveSelection) || this.group) {\n const bbox = fabric.util.sizeAfterTransform(\n this.width,\n this.height,\n options\n ),\n stroke = (\n this.strokeUniform\n ? new Point().scalarAdd(this.canvas.getZoom())\n : new Point(options.scaleX, options.scaleY)\n ).scalarMultiply(this.strokeWidth);\n size = bbox.add(stroke).scalarAdd(this.borderScaleFactor);\n } else {\n size = this._calculateCurrentDimensions().scalarAdd(\n this.borderScaleFactor\n );\n }\n this._drawBorders(ctx, size, styleOverride);\n return this;\n },\n\n /**\n * Draws lines from a borders of an object's bounding box to controls that have `withConnection` property set.\n * Requires public properties: width, height\n * Requires public options: padding, borderColor\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @param {number} width object final width\n * @param {number} height object final height\n * @return {fabric.Object} thisArg\n * @chainable\n */\n drawControlsConnectingLines: function (ctx, size) {\n var shouldStroke = false;\n\n ctx.beginPath();\n this.forEachControl(function (control, key, fabricObject) {\n // in this moment, the ctx is centered on the object.\n // width and height of the above function are the size of the bbox.\n if (\n control.withConnection &&\n control.getVisibility(fabricObject, key)\n ) {\n // reset movement for each control\n shouldStroke = true;\n ctx.moveTo(control.x * size.x, control.y * size.y);\n ctx.lineTo(\n control.x * size.x + control.offsetX,\n control.y * size.y + control.offsetY\n );\n }\n });\n shouldStroke && ctx.stroke();\n\n return this;\n },\n\n /**\n * Draws corners of an object's bounding box.\n * Requires public properties: width, height\n * Requires public options: cornerSize, padding\n * @param {CanvasRenderingContext2D} ctx Context to draw on\n * @param {Object} styleOverride object to override the object style\n * @return {fabric.Object} thisArg\n * @chainable\n */\n drawControls: function (ctx, styleOverride) {\n styleOverride = styleOverride || {};\n ctx.save();\n var retinaScaling = this.canvas.getRetinaScaling(),\n p;\n ctx.setTransform(retinaScaling, 0, 0, retinaScaling, 0, 0);\n ctx.strokeStyle = ctx.fillStyle =\n styleOverride.cornerColor || this.cornerColor;\n if (!this.transparentCorners) {\n ctx.strokeStyle =\n styleOverride.cornerStrokeColor || this.cornerStrokeColor;\n }\n this._setLineDash(\n ctx,\n styleOverride.cornerDashArray || this.cornerDashArray\n );\n this.setCoords();\n this.forEachControl(function (control, key, fabricObject) {\n if (control.getVisibility(fabricObject, key)) {\n p = fabricObject.oCoords[key];\n control.render(ctx, p.x, p.y, styleOverride, fabricObject);\n }\n });\n ctx.restore();\n\n return this;\n },\n\n /**\n * Returns true if the specified control is visible, false otherwise.\n * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'.\n * @returns {Boolean} true if the specified control is visible, false otherwise\n */\n isControlVisible: function (controlKey) {\n return (\n this.controls[controlKey] &&\n this.controls[controlKey].getVisibility(this, controlKey)\n );\n },\n\n /**\n * Sets the visibility of the specified control.\n * @param {String} controlKey The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'.\n * @param {Boolean} visible true to set the specified control visible, false otherwise\n * @return {fabric.Object} thisArg\n * @chainable\n */\n setControlVisible: function (controlKey, visible) {\n if (!this._controlsVisibility) {\n this._controlsVisibility = {};\n }\n this._controlsVisibility[controlKey] = visible;\n return this;\n },\n\n /**\n * Sets the visibility state of object controls.\n * @param {Object} [options] Options object\n * @param {Boolean} [options.bl] true to enable the bottom-left control, false to disable it\n * @param {Boolean} [options.br] true to enable the bottom-right control, false to disable it\n * @param {Boolean} [options.mb] true to enable the middle-bottom control, false to disable it\n * @param {Boolean} [options.ml] true to enable the middle-left control, false to disable it\n * @param {Boolean} [options.mr] true to enable the middle-right control, false to disable it\n * @param {Boolean} [options.mt] true to enable the middle-top control, false to disable it\n * @param {Boolean} [options.tl] true to enable the top-left control, false to disable it\n * @param {Boolean} [options.tr] true to enable the top-right control, false to disable it\n * @param {Boolean} [options.mtr] true to enable the middle-top-rotate control, false to disable it\n * @return {fabric.Object} thisArg\n * @chainable\n */\n setControlsVisibility: function (options) {\n options || (options = {});\n\n for (var p in options) {\n this.setControlVisible(p, options[p]);\n }\n return this;\n },\n\n /**\n * Clears the canvas.contextTop in a specific area that corresponds to the object's bounding box\n * that is in the canvas.contextContainer.\n * This function is used to clear pieces of contextTop where we render ephemeral effects on top of the object.\n * Example: blinking cursror text selection, drag effects.\n * // TODO: discuss swapping restoreManually with a renderCallback, but think of async issues\n * @param {Boolean} [restoreManually] When true won't restore the context after clear, in order to draw something else.\n * @return {CanvasRenderingContext2D|undefined} canvas.contextTop that is either still transformed\n * with the object transformMatrix, or restored to neutral transform\n */\n clearContextTop: function (restoreManually) {\n if (!this.canvas || !this.canvas.contextTop) {\n return;\n }\n var ctx = this.canvas.contextTop,\n v = this.canvas.viewportTransform;\n if (!ctx) {\n return;\n }\n ctx.save();\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n this.transform(ctx);\n // we add 4 pixel, to be sure to do not leave any pixel out\n var width = this.width + 4,\n height = this.height + 4;\n ctx.clearRect(-width / 2, -height / 2, width, height);\n\n restoreManually || ctx.restore();\n return ctx;\n },\n\n /**\n * This callback function is called every time _discardActiveObject or _setActiveObject\n * try to to deselect this object. If the function returns true, the process is cancelled\n * @param {Object} [options] options sent from the upper functions\n * @param {Event} [options.e] event if the process is generated by an event\n */\n onDeselect: function () {\n // implemented by sub-classes, as needed.\n },\n\n /**\n * This callback function is called every time _discardActiveObject or _setActiveObject\n * try to to select this object. If the function returns true, the process is cancelled\n * @param {Object} [options] options sent from the upper functions\n * @param {Event} [options.e] event if the process is generated by an event\n */\n onSelect: function () {\n // implemented by sub-classes, as needed.\n },\n\n /**\n * Override to customize drag and drop behavior\n * @public\n * @param {DragEvent} e\n * @returns {boolean}\n */\n canDrop: function (/* e */) {\n return false;\n },\n\n renderDragSourceEffect: function () {\n // for subclasses\n },\n\n renderDropTargetEffect: function (/* e */) {\n // for subclasses\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.StaticCanvas.prototype,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Animation duration (in ms) for fx* methods\n * @type Number\n * @default\n */\n FX_DURATION: 500,\n\n /**\n * Centers object horizontally with animation.\n * @param {fabric.Object} object Object to center\n * @param {Object} [callbacks] Callbacks object with optional \"onComplete\" and/or \"onChange\" properties\n * @param {Function} [callbacks.onComplete] Invoked on completion\n * @param {Function} [callbacks.onChange] Invoked on every step of animation\n * @return {fabric.AnimationContext} context\n */\n fxCenterObjectH: function (object, callbacks) {\n callbacks = callbacks || {};\n\n var empty = function () {},\n onComplete = callbacks.onComplete || empty,\n onChange = callbacks.onChange || empty,\n _this = this;\n\n return fabric.util.animate({\n target: this,\n startValue: object.getX(),\n endValue: this.getCenterPoint().x,\n duration: this.FX_DURATION,\n onChange: function (value) {\n object.setX(value);\n _this.requestRenderAll();\n onChange();\n },\n onComplete: function () {\n object.setCoords();\n onComplete();\n },\n });\n },\n\n /**\n * Centers object vertically with animation.\n * @param {fabric.Object} object Object to center\n * @param {Object} [callbacks] Callbacks object with optional \"onComplete\" and/or \"onChange\" properties\n * @param {Function} [callbacks.onComplete] Invoked on completion\n * @param {Function} [callbacks.onChange] Invoked on every step of animation\n * @return {fabric.AnimationContext} context\n */\n fxCenterObjectV: function (object, callbacks) {\n callbacks = callbacks || {};\n\n var empty = function () {},\n onComplete = callbacks.onComplete || empty,\n onChange = callbacks.onChange || empty,\n _this = this;\n\n return fabric.util.animate({\n target: this,\n startValue: object.getY(),\n endValue: this.getCenterPoint().y,\n duration: this.FX_DURATION,\n onChange: function (value) {\n object.setY(value);\n _this.requestRenderAll();\n onChange();\n },\n onComplete: function () {\n object.setCoords();\n onComplete();\n },\n });\n },\n\n /**\n * Same as `fabric.Canvas#remove` but animated\n * @param {fabric.Object} object Object to remove\n * @param {Object} [callbacks] Callbacks object with optional \"onComplete\" and/or \"onChange\" properties\n * @param {Function} [callbacks.onComplete] Invoked on completion\n * @param {Function} [callbacks.onChange] Invoked on every step of animation\n * @return {fabric.AnimationContext} context\n */\n fxRemove: function (object, callbacks) {\n callbacks = callbacks || {};\n\n var empty = function () {},\n onComplete = callbacks.onComplete || empty,\n onChange = callbacks.onChange || empty,\n _this = this;\n\n return fabric.util.animate({\n target: this,\n startValue: object.opacity,\n endValue: 0,\n duration: this.FX_DURATION,\n onChange: function (value) {\n object.set('opacity', value);\n _this.requestRenderAll();\n onChange();\n },\n onComplete: function () {\n _this.remove(object);\n onComplete();\n },\n });\n },\n }\n );\n\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * Animates object's properties\n * @param {String|Object} property Property to animate (if string) or properties to animate (if object)\n * @param {Number|Object} value Value to animate property to (if string was given first) or options object\n * @return {fabric.Object} thisArg\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#animation}\n * @return {fabric.AnimationContext | fabric.AnimationContext[]} animation context (or an array if passed multiple properties)\n *\n * As object — multiple properties\n *\n * object.animate({ left: ..., top: ... });\n * object.animate({ left: ..., top: ... }, { duration: ... });\n *\n * As string — one property\n *\n * object.animate('left', ...);\n * object.animate('left', { duration: ... });\n *\n */\n animate: function () {\n if (arguments[0] && typeof arguments[0] === 'object') {\n var propsToAnimate = [],\n prop,\n skipCallbacks,\n out = [];\n for (prop in arguments[0]) {\n propsToAnimate.push(prop);\n }\n for (var i = 0, len = propsToAnimate.length; i < len; i++) {\n prop = propsToAnimate[i];\n skipCallbacks = i !== len - 1;\n out.push(\n this._animate(\n prop,\n arguments[0][prop],\n arguments[1],\n skipCallbacks\n )\n );\n }\n return out;\n } else {\n return this._animate.apply(this, arguments);\n }\n },\n\n /**\n * @private\n * @param {String} property Property to animate\n * @param {String} to Value to animate to\n * @param {Object} [options] Options object\n * @param {Boolean} [skipCallbacks] When true, callbacks like onchange and oncomplete are not invoked\n */\n _animate: function (property, to, options, skipCallbacks) {\n var _this = this,\n propPair;\n\n to = to.toString();\n\n options = Object.assign({}, options);\n\n if (~property.indexOf('.')) {\n propPair = property.split('.');\n }\n\n var propIsColor =\n _this.colorProperties.indexOf(property) > -1 ||\n (propPair && _this.colorProperties.indexOf(propPair[1]) > -1);\n\n var currentValue = propPair\n ? this.get(propPair[0])[propPair[1]]\n : this.get(property);\n\n if (!('from' in options)) {\n options.from = currentValue;\n }\n\n if (!propIsColor) {\n if (~to.indexOf('=')) {\n to = currentValue + parseFloat(to.replace('=', ''));\n } else {\n to = parseFloat(to);\n }\n }\n\n var _options = {\n target: this,\n startValue: options.from,\n endValue: to,\n byValue: options.by,\n easing: options.easing,\n duration: options.duration,\n abort:\n options.abort &&\n function (value, valueProgress, timeProgress) {\n return options.abort.call(\n _this,\n value,\n valueProgress,\n timeProgress\n );\n },\n onChange: function (value, valueProgress, timeProgress) {\n if (propPair) {\n _this[propPair[0]][propPair[1]] = value;\n } else {\n _this.set(property, value);\n }\n if (skipCallbacks) {\n return;\n }\n options.onChange &&\n options.onChange(value, valueProgress, timeProgress);\n },\n onComplete: function (value, valueProgress, timeProgress) {\n if (skipCallbacks) {\n return;\n }\n\n _this.setCoords();\n options.onComplete &&\n options.onComplete(value, valueProgress, timeProgress);\n },\n };\n\n if (propIsColor) {\n return fabric.util.animateColor(\n _options.startValue,\n _options.endValue,\n _options.duration,\n _options\n );\n } else {\n return fabric.util.animate(_options);\n }\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n clone = fabric.util.object.clone,\n coordProps = { x1: 1, x2: 1, y1: 1, y2: 1 };\n\n /**\n * Line class\n * @class fabric.Line\n * @extends fabric.Object\n * @see {@link fabric.Line#initialize} for constructor definition\n */\n fabric.Line = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Line.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'line',\n\n /**\n * x value or first line edge\n * @type Number\n * @default\n */\n x1: 0,\n\n /**\n * y value or first line edge\n * @type Number\n * @default\n */\n y1: 0,\n\n /**\n * x value or second line edge\n * @type Number\n * @default\n */\n x2: 0,\n\n /**\n * y value or second line edge\n * @type Number\n * @default\n */\n y2: 0,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'x1',\n 'x2',\n 'y1',\n 'y2'\n ),\n\n /**\n * Constructor\n * @param {Array} [points] Array of points\n * @param {Object} [options] Options object\n * @return {fabric.Line} thisArg\n */\n initialize: function (points, options) {\n if (!points) {\n points = [0, 0, 0, 0];\n }\n\n this.callSuper('initialize', options);\n\n this.set('x1', points[0]);\n this.set('y1', points[1]);\n this.set('x2', points[2]);\n this.set('y2', points[3]);\n\n this._setWidthHeight(options);\n },\n\n /**\n * @private\n * @param {Object} [options] Options\n */\n _setWidthHeight: function (options) {\n options || (options = {});\n\n this.width = Math.abs(this.x2 - this.x1);\n this.height = Math.abs(this.y2 - this.y1);\n\n this.left = 'left' in options ? options.left : this._getLeftToOriginX();\n\n this.top = 'top' in options ? options.top : this._getTopToOriginY();\n },\n\n /**\n * @private\n * @param {String} key\n * @param {*} value\n */\n _set: function (key, value) {\n this.callSuper('_set', key, value);\n if (typeof coordProps[key] !== 'undefined') {\n this._setWidthHeight();\n }\n return this;\n },\n\n /**\n * @private\n * @return {Number} leftToOriginX Distance from left edge of canvas to originX of Line.\n */\n _getLeftToOriginX: makeEdgeToOriginGetter(\n {\n // property names\n origin: 'originX',\n axis1: 'x1',\n axis2: 'x2',\n dimension: 'width',\n },\n {\n // possible values of origin\n nearest: 'left',\n center: 'center',\n farthest: 'right',\n }\n ),\n\n /**\n * @private\n * @return {Number} topToOriginY Distance from top edge of canvas to originY of Line.\n */\n _getTopToOriginY: makeEdgeToOriginGetter(\n {\n // property names\n origin: 'originY',\n axis1: 'y1',\n axis2: 'y2',\n dimension: 'height',\n },\n {\n // possible values of origin\n nearest: 'top',\n center: 'center',\n farthest: 'bottom',\n }\n ),\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n ctx.beginPath();\n\n var p = this.calcLinePoints();\n ctx.moveTo(p.x1, p.y1);\n ctx.lineTo(p.x2, p.y2);\n\n ctx.lineWidth = this.strokeWidth;\n\n // TODO: test this\n // make sure setting \"fill\" changes color of a line\n // (by copying fillStyle to strokeStyle, since line is stroked, not filled)\n var origStrokeStyle = ctx.strokeStyle;\n ctx.strokeStyle = this.stroke || ctx.fillStyle;\n this.stroke && this._renderStroke(ctx);\n ctx.strokeStyle = origStrokeStyle;\n },\n\n /**\n * This function is an helper for svg import. it returns the center of the object in the svg\n * untransformed coordinates\n * @private\n * @return {Object} center point from element coordinates\n */\n _findCenterFromElement: function () {\n return {\n x: (this.x1 + this.x2) / 2,\n y: (this.y1 + this.y2) / 2,\n };\n },\n\n /**\n * Returns object representation of an instance\n * @method toObject\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return extend(\n this.callSuper('toObject', propertiesToInclude),\n this.calcLinePoints()\n );\n },\n\n /*\n * Calculate object dimensions from its properties\n * @private\n */\n _getNonTransformedDimensions: function () {\n var dim = this.callSuper('_getNonTransformedDimensions');\n if (this.strokeLineCap === 'butt') {\n if (this.width === 0) {\n dim.y -= this.strokeWidth;\n }\n if (this.height === 0) {\n dim.x -= this.strokeWidth;\n }\n }\n return dim;\n },\n\n /**\n * Recalculates line points given width and height\n * @private\n */\n calcLinePoints: function () {\n var xMult = this.x1 <= this.x2 ? -1 : 1,\n yMult = this.y1 <= this.y2 ? -1 : 1,\n x1 = xMult * this.width * 0.5,\n y1 = yMult * this.height * 0.5,\n x2 = xMult * this.width * -0.5,\n y2 = yMult * this.height * -0.5;\n\n return {\n x1: x1,\n x2: x2,\n y1: y1,\n y2: y2,\n };\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var p = this.calcLinePoints();\n return [\n '\\n',\n ];\n },\n /* _TO_SVG_END_ */\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Line.fromElement})\n * @static\n * @memberOf fabric.Line\n * @see http://www.w3.org/TR/SVG/shapes.html#LineElement\n */\n fabric.Line.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'x1 y1 x2 y2'.split(' ')\n );\n\n /**\n * Returns fabric.Line instance from an SVG element\n * @static\n * @memberOf fabric.Line\n * @param {SVGElement} element Element to parse\n * @param {Object} [options] Options object\n * @param {Function} [callback] callback function invoked after parsing\n */\n fabric.Line.fromElement = function (element, callback, options) {\n options = options || {};\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Line.ATTRIBUTE_NAMES\n ),\n points = [\n parsedAttributes.x1 || 0,\n parsedAttributes.y1 || 0,\n parsedAttributes.x2 || 0,\n parsedAttributes.y2 || 0,\n ];\n callback(new fabric.Line(points, extend(parsedAttributes, options)));\n };\n /* _FROM_SVG_END_ */\n\n /**\n * Returns fabric.Line instance from an object representation\n * @static\n * @memberOf fabric.Line\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Line.fromObject = function (object) {\n var options = clone(object, true);\n options.points = [object.x1, object.y1, object.x2, object.y2];\n return fabric.Object._fromObject(fabric.Line, options, {\n extraParam: 'points',\n }).then(function (fabricLine) {\n delete fabricLine.points;\n return fabricLine;\n });\n };\n\n /**\n * Produces a function that calculates distance from canvas edge to Line origin.\n */\n function makeEdgeToOriginGetter(propertyNames, originValues) {\n var origin = propertyNames.origin,\n axis1 = propertyNames.axis1,\n axis2 = propertyNames.axis2,\n dimension = propertyNames.dimension,\n nearest = originValues.nearest,\n center = originValues.center,\n farthest = originValues.farthest;\n\n return function () {\n switch (this.get(origin)) {\n case nearest:\n return Math.min(this.get(axis1), this.get(axis2));\n case center:\n return (\n Math.min(this.get(axis1), this.get(axis2)) +\n 0.5 * this.get(dimension)\n );\n case farthest:\n return Math.max(this.get(axis1), this.get(axis2));\n }\n };\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\n\nconst degreesToRadians = fabric.util.degreesToRadians;\n\n/**\n * Circle class\n * @class Circle\n * @extends fabric.Object\n * @see {@link Circle#initialize} for constructor definition\n */\nconst Circle = fabric.util.createClass(\n fabric.Object,\n /** @lends Circle.prototype */ {\n /**\n * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged})\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties: fabric.Object.prototype.stateProperties.concat(\n 'radius',\n 'startAngle',\n 'endAngle'\n ),\n\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'circle',\n\n /**\n * Radius of this circle\n * @type Number\n * @default\n */\n radius: 0,\n\n /**\n * degrees of start of the circle.\n * probably will change to degrees in next major version\n * @type Number 0 - 359\n * @default 0\n */\n startAngle: 0,\n\n /**\n * End angle of the circle\n * probably will change to degrees in next major version\n * @type Number 1 - 360\n * @default 360\n */\n endAngle: 360,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'radius',\n 'startAngle',\n 'endAngle'\n ),\n\n /**\n * @private\n * @param {String} key\n * @param {*} value\n * @return {Circle} thisArg\n */\n _set: function (key, value) {\n this.callSuper('_set', key, value);\n\n if (key === 'radius') {\n this.setRadius(value);\n }\n\n return this;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx context to render on\n */\n _render: function (ctx) {\n ctx.beginPath();\n ctx.arc(\n 0,\n 0,\n this.radius,\n degreesToRadians(this.startAngle),\n degreesToRadians(this.endAngle),\n false\n );\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Returns horizontal radius of an object (according to how an object is scaled)\n * @return {Number}\n */\n getRadiusX: function () {\n return this.get('radius') * this.get('scaleX');\n },\n\n /**\n * Returns vertical radius of an object (according to how an object is scaled)\n * @return {Number}\n */\n getRadiusY: function () {\n return this.get('radius') * this.get('scaleY');\n },\n\n /**\n * Sets radius of an object (and updates width accordingly)\n * @return {Circle} thisArg\n */\n setRadius: function (value) {\n this.radius = value;\n return this.set('width', value * 2).set('height', value * 2);\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this.callSuper(\n 'toObject',\n ['radius', 'startAngle', 'endAngle'].concat(propertiesToInclude)\n );\n },\n\n /* _TO_SVG_START_ */\n\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n const angle = (this.endAngle - this.startAngle) % 360;\n\n if (angle === 0) {\n return [\n '\\n',\n ];\n } else {\n const { radius } = this;\n const start = degreesToRadians(this.startAngle),\n end = degreesToRadians(this.endAngle),\n startX = fabric.util.cos(start) * radius,\n startY = fabric.util.sin(start) * radius,\n endX = fabric.util.cos(end) * radius,\n endY = fabric.util.sin(end) * radius,\n largeFlag = angle > 180 ? '1' : '0';\n return [\n '\\n',\n ];\n }\n },\n /* _TO_SVG_END_ */\n }\n);\n\n/* _FROM_SVG_START_ */\n/**\n * List of attribute names to account for when parsing SVG element (used by {@link Circle.fromElement})\n * @static\n * @memberOf Circle\n * @see: http://www.w3.org/TR/SVG/shapes.html#CircleElement\n */\nCircle.ATTRIBUTE_NAMES = ['cx', 'cy', 'r', ...fabric.SHARED_ATTRIBUTES];\n\n/**\n * Returns {@link Circle} instance from an SVG element\n * @static\n * @memberOf Circle\n * @param {SVGElement} element Element to parse\n * @param {Function} [callback] Options callback invoked after parsing is finished\n * @param {Object} [options] Partial Circle object to default missing properties on the element.\n * @throws {Error} If value of `r` attribute is missing or invalid\n */\nCircle.fromElement = function (element, callback) {\n const {\n left = 0,\n top = 0,\n radius,\n ...otherParsedAttributes\n } = fabric.parseAttributes(element, Circle.ATTRIBUTE_NAMES);\n\n if (!radius || radius < 0) {\n throw new Error(\n 'value of `r` attribute is required and can not be negative'\n );\n }\n\n // this probably requires to be fixed for default origins not being top/left.\n callback(\n new fabric.Circle({\n ...otherParsedAttributes,\n radius,\n left: left - radius,\n top: top - radius,\n })\n );\n};\n\n/* _FROM_SVG_END_ */\n\n/**\n * Returns {@link Circle} instance from an object representation\n * @static\n * @memberOf Circle\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\nCircle.fromObject = (object) =>\n fabric.Object._fromObject(fabric.Circle, object);\n\nfabric.Circle = Circle;\nexport { Circle };\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n /**\n * Triangle class\n * @class fabric.Triangle\n * @extends fabric.Object\n * @return {fabric.Triangle} thisArg\n * @see {@link fabric.Triangle#initialize} for constructor definition\n */\n fabric.Triangle = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Triangle.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'triangle',\n\n /**\n * Width is set to 100 to compensate the old initialize code that was setting it to 100\n * @type Number\n * @default\n */\n width: 100,\n\n /**\n * Height is set to 100 to compensate the old initialize code that was setting it to 100\n * @type Number\n * @default\n */\n height: 100,\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n var widthBy2 = this.width / 2,\n heightBy2 = this.height / 2;\n\n ctx.beginPath();\n ctx.moveTo(-widthBy2, heightBy2);\n ctx.lineTo(0, -heightBy2);\n ctx.lineTo(widthBy2, heightBy2);\n ctx.closePath();\n\n this._renderPaintInOrder(ctx);\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var widthBy2 = this.width / 2,\n heightBy2 = this.height / 2,\n points = [\n -widthBy2 + ' ' + heightBy2,\n '0 ' + -heightBy2,\n widthBy2 + ' ' + heightBy2,\n ].join(',');\n return [''];\n },\n /* _TO_SVG_END_ */\n }\n );\n\n /**\n * Returns {@link fabric.Triangle} instance from an object representation\n * @static\n * @memberOf fabric.Triangle\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Triangle.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Triangle, object);\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n piBy2 = Math.PI * 2;\n /**\n * Ellipse class\n * @class fabric.Ellipse\n * @extends fabric.Object\n * @return {fabric.Ellipse} thisArg\n * @see {@link fabric.Ellipse#initialize} for constructor definition\n */\n fabric.Ellipse = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Ellipse.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'ellipse',\n\n /**\n * Horizontal radius\n * @type Number\n * @default\n */\n rx: 0,\n\n /**\n * Vertical radius\n * @type Number\n * @default\n */\n ry: 0,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'rx',\n 'ry'\n ),\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n * @return {fabric.Ellipse} thisArg\n */\n initialize: function (options) {\n this.callSuper('initialize', options);\n this.set('rx', (options && options.rx) || 0);\n this.set('ry', (options && options.ry) || 0);\n },\n\n /**\n * @private\n * @param {String} key\n * @param {*} value\n * @return {fabric.Ellipse} thisArg\n */\n _set: function (key, value) {\n this.callSuper('_set', key, value);\n switch (key) {\n case 'rx':\n this.rx = value;\n this.set('width', value * 2);\n break;\n\n case 'ry':\n this.ry = value;\n this.set('height', value * 2);\n break;\n }\n return this;\n },\n\n /**\n * Returns horizontal radius of an object (according to how an object is scaled)\n * @return {Number}\n */\n getRx: function () {\n return this.get('rx') * this.get('scaleX');\n },\n\n /**\n * Returns Vertical radius of an object (according to how an object is scaled)\n * @return {Number}\n */\n getRy: function () {\n return this.get('ry') * this.get('scaleY');\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this.callSuper(\n 'toObject',\n ['rx', 'ry'].concat(propertiesToInclude)\n );\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n return [\n '\\n',\n ];\n },\n /* _TO_SVG_END_ */\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx context to render on\n */\n _render: function (ctx) {\n ctx.beginPath();\n ctx.save();\n ctx.transform(1, 0, 0, this.ry / this.rx, 0, 0);\n ctx.arc(0, 0, this.rx, 0, piBy2, false);\n ctx.restore();\n this._renderPaintInOrder(ctx);\n },\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Ellipse.fromElement})\n * @static\n * @memberOf fabric.Ellipse\n * @see http://www.w3.org/TR/SVG/shapes.html#EllipseElement\n */\n fabric.Ellipse.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'cx cy rx ry'.split(' ')\n );\n\n /**\n * Returns {@link fabric.Ellipse} instance from an SVG element\n * @static\n * @memberOf fabric.Ellipse\n * @param {SVGElement} element Element to parse\n * @param {Function} [callback] Options callback invoked after parsing is finished\n * @return {fabric.Ellipse}\n */\n fabric.Ellipse.fromElement = function (element, callback) {\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Ellipse.ATTRIBUTE_NAMES\n );\n\n parsedAttributes.left = (parsedAttributes.left || 0) - parsedAttributes.rx;\n parsedAttributes.top = (parsedAttributes.top || 0) - parsedAttributes.ry;\n callback(new fabric.Ellipse(parsedAttributes));\n };\n /* _FROM_SVG_END_ */\n\n /**\n * Returns {@link fabric.Ellipse} instance from an object representation\n * @static\n * @memberOf fabric.Ellipse\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Ellipse.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Ellipse, object);\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { fabric } from '../../HEADER';\nimport { kRect } from '../constants';\n/**\n * Rectangle class\n * @class Rect\n * @extends fabric.Object\n * @return {Rect} thisArg\n * @see {@link Rect#initialize} for constructor definition\n */\nconst Rect = fabric.util.createClass(\n fabric.Object,\n /** @lends Rect.prototype */ {\n /**\n * List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged})\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties: fabric.Object.prototype.stateProperties.concat('rx', 'ry'),\n\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'rect',\n\n /**\n * Horizontal border radius\n * @type Number\n * @default\n */\n rx: 0,\n\n /**\n * Vertical border radius\n * @type Number\n * @default\n */\n ry: 0,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat('rx', 'ry'),\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n * @return {Object} thisArg\n */\n initialize: function (options) {\n this.callSuper('initialize', options);\n this._initRxRy();\n },\n\n /**\n * Initializes rx/ry attributes\n * @private\n */\n _initRxRy: function () {\n const { rx, ry } = this;\n if (rx && !ry) {\n this.ry = rx;\n } else if (ry && !rx) {\n this.rx = ry;\n }\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n // 1x1 case (used in spray brush) optimization was removed because\n // with caching and higher zoom level this makes more damage than help\n const { width: w, height: h } = this;\n const x = -w / 2;\n const y = -h / 2;\n const rx = this.rx ? Math.min(this.rx, w / 2) : 0;\n const ry = this.ry ? Math.min(this.ry, h / 2) : 0;\n const isRounded = rx !== 0 || ry !== 0;\n\n ctx.beginPath();\n\n ctx.moveTo(x + rx, y);\n\n ctx.lineTo(x + w - rx, y);\n isRounded &&\n ctx.bezierCurveTo(\n x + w - kRect * rx,\n y,\n x + w,\n y + kRect * ry,\n x + w,\n y + ry\n );\n\n ctx.lineTo(x + w, y + h - ry);\n isRounded &&\n ctx.bezierCurveTo(\n x + w,\n y + h - kRect * ry,\n x + w - kRect * rx,\n y + h,\n x + w - rx,\n y + h\n );\n\n ctx.lineTo(x + rx, y + h);\n isRounded &&\n ctx.bezierCurveTo(\n x + kRect * rx,\n y + h,\n x,\n y + h - kRect * ry,\n x,\n y + h - ry\n );\n\n ctx.lineTo(x, y + ry);\n isRounded &&\n ctx.bezierCurveTo(x, y + kRect * ry, x + kRect * rx, y, x + rx, y);\n\n ctx.closePath();\n\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this.callSuper(\n 'toObject',\n ['rx', 'ry'].concat(propertiesToInclude)\n );\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n const { width, height, rx, ry } = this;\n return [\n '\\n',\n ];\n },\n /* _TO_SVG_END_ */\n }\n);\n\n/* _FROM_SVG_START_ */\n/**\n * List of attribute names to account for when parsing SVG element (used by `Rect.fromElement`)\n * @static\n * @memberOf Rect\n * @see: http://www.w3.org/TR/SVG/shapes.html#RectElement\n */\nRect.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'x y rx ry width height'.split(' ')\n);\n\n/**\n * Returns {@link Rect} instance from an SVG element\n * @static\n * @memberOf Rect\n * @param {SVGElement} element Element to parse\n * @param {Function} callback callback function invoked after parsing\n * @param {Object} [options] Options object\n */\nRect.fromElement = function (element, callback, options = {}) {\n if (!element) {\n return callback(null);\n }\n const {\n left = 0,\n top = 0,\n width = 0,\n height = 0,\n visible = true,\n ...restOfparsedAttributes\n } = fabric.parseAttributes(element, Rect.ATTRIBUTE_NAMES);\n\n const rect = new Rect({\n ...options,\n ...restOfparsedAttributes,\n left,\n top,\n width,\n height,\n visible: Boolean(visible && width && height),\n });\n callback(rect);\n};\n/* _FROM_SVG_END_ */\n\n/**\n * Returns {@link Rect} instance from an object representation\n * @static\n * @memberOf Rect\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\nRect.fromObject = (object) => fabric.Object._fromObject(Rect, object);\n\nfabric.Rect = Rect;\nexport { Rect };\n","//@ts-nocheck\n\nimport { config } from '../config';\nimport { Point } from '../point.class';\nimport { makeBoundingBoxFromPoints } from '../util/misc/boundingBoxFromPoints';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n toFixed = fabric.util.toFixed,\n projectStrokeOnPoints = fabric.util.projectStrokeOnPoints;\n\n /**\n * Polyline class\n * @class fabric.Polyline\n * @extends fabric.Object\n * @see {@link fabric.Polyline#initialize} for constructor definition\n */\n fabric.Polyline = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Polyline.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'polyline',\n\n /**\n * Points array\n * @type Array\n * @default\n */\n points: null,\n\n /**\n * WARNING: Feature in progress\n * Calculate the exact bounding box taking in account strokeWidth on acute angles\n * this will be turned to true by default on fabric 6.0\n * maybe will be left in as an optimization since calculations may be slow\n * @deprecated\n * @type Boolean\n * @default false\n */\n exactBoundingBox: false,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat('points'),\n\n /**\n * Constructor\n * @param {Array} points Array of points (where each point is an object with x and y)\n * @param {Object} [options] Options object\n * @return {fabric.Polyline} thisArg\n * @example\n * var poly = new fabric.Polyline([\n * { x: 10, y: 10 },\n * { x: 50, y: 30 },\n * { x: 40, y: 70 },\n * { x: 60, y: 50 },\n * { x: 100, y: 150 },\n * { x: 40, y: 100 }\n * ], {\n * stroke: 'red',\n * left: 100,\n * top: 100\n * });\n */\n initialize: function (points, options) {\n options = options || {};\n this.points = points || [];\n this.callSuper('initialize', options);\n this._setPositionDimensions(options);\n },\n\n /**\n * @private\n */\n _projectStrokeOnPoints: function () {\n return projectStrokeOnPoints(this.points, this, true);\n },\n\n _setPositionDimensions: function (options) {\n options || (options = {});\n var calcDim = this._calcDimensions(options),\n correctLeftTop,\n correctSize = this.exactBoundingBox ? this.strokeWidth : 0;\n this.width = calcDim.width - correctSize;\n this.height = calcDim.height - correctSize;\n if (!options.fromSVG) {\n correctLeftTop = this.translateToGivenOrigin(\n {\n // this looks bad, but is one way to keep it optional for now.\n x: calcDim.left - this.strokeWidth / 2 + correctSize / 2,\n y: calcDim.top - this.strokeWidth / 2 + correctSize / 2,\n },\n 'left',\n 'top',\n this.originX,\n this.originY\n );\n }\n if (typeof options.left === 'undefined') {\n this.left = options.fromSVG ? calcDim.left : correctLeftTop.x;\n }\n if (typeof options.top === 'undefined') {\n this.top = options.fromSVG ? calcDim.top : correctLeftTop.y;\n }\n this.pathOffset = {\n x: calcDim.left + this.width / 2 + correctSize / 2,\n y: calcDim.top + this.height / 2 + correctSize / 2,\n };\n },\n\n /**\n * Calculate the polygon min and max point from points array,\n * returning an object with left, top, width, height to measure the\n * polygon size\n * @return {Object} object.left X coordinate of the polygon leftmost point\n * @return {Object} object.top Y coordinate of the polygon topmost point\n * @return {Object} object.width distance between X coordinates of the polygon leftmost and rightmost point\n * @return {Object} object.height distance between Y coordinates of the polygon topmost and bottommost point\n * @private\n */\n _calcDimensions: function () {\n const points = this.exactBoundingBox\n ? this._projectStrokeOnPoints()\n : this.points.map((p) => new Point(p));\n if (points.length === 0) {\n return makeBoundingBoxFromPoints([new Point(0, 0)]);\n }\n return makeBoundingBoxFromPoints(points);\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return extend(this.callSuper('toObject', propertiesToInclude), {\n points: this.points.concat(),\n });\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var points = [],\n diffX = this.pathOffset.x,\n diffY = this.pathOffset.y,\n NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n\n for (var i = 0, len = this.points.length; i < len; i++) {\n points.push(\n toFixed(this.points[i].x - diffX, NUM_FRACTION_DIGITS),\n ',',\n toFixed(this.points[i].y - diffY, NUM_FRACTION_DIGITS),\n ' '\n );\n }\n return [\n '<' + this.type + ' ',\n 'COMMON_PARTS',\n 'points=\"',\n points.join(''),\n '\" />\\n',\n ];\n },\n /* _TO_SVG_END_ */\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n commonRender: function (ctx) {\n var point,\n len = this.points.length,\n x = this.pathOffset.x,\n y = this.pathOffset.y;\n\n if (!len || isNaN(this.points[len - 1].y)) {\n // do not draw if no points or odd points\n // NaN comes from parseFloat of a empty string in parser\n return false;\n }\n ctx.beginPath();\n ctx.moveTo(this.points[0].x - x, this.points[0].y - y);\n for (var i = 0; i < len; i++) {\n point = this.points[i];\n ctx.lineTo(point.x - x, point.y - y);\n }\n return true;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n if (!this.commonRender(ctx)) {\n return;\n }\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Returns complexity of an instance\n * @return {Number} complexity of this instance\n */\n complexity: function () {\n return this.get('points').length;\n },\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Polyline.fromElement})\n * @static\n * @memberOf fabric.Polyline\n * @see: http://www.w3.org/TR/SVG/shapes.html#PolylineElement\n */\n fabric.Polyline.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat();\n\n /**\n * Returns fabric.Polyline instance from an SVG element\n * @static\n * @memberOf fabric.Polyline\n * @param {SVGElement} element Element to parser\n * @param {Function} callback callback function invoked after parsing\n * @param {Object} [options] Options object\n */\n fabric.Polyline.fromElementGenerator = function (_class) {\n return function (element, callback, options) {\n if (!element) {\n return callback(null);\n }\n options || (options = {});\n\n var points = fabric.parsePointsAttribute(element.getAttribute('points')),\n parsedAttributes = fabric.parseAttributes(\n element,\n fabric[_class].ATTRIBUTE_NAMES\n );\n parsedAttributes.fromSVG = true;\n callback(new fabric[_class](points, extend(parsedAttributes, options)));\n };\n };\n\n fabric.Polyline.fromElement =\n fabric.Polyline.fromElementGenerator('Polyline');\n\n /* _FROM_SVG_END_ */\n\n /**\n * Returns fabric.Polyline instance from an object representation\n * @static\n * @memberOf fabric.Polyline\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Polyline.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Polyline, object, {\n extraParam: 'points',\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n projectStrokeOnPoints = fabric.util.projectStrokeOnPoints;\n /**\n * Polygon class\n * @class fabric.Polygon\n * @extends fabric.Polyline\n * @see {@link fabric.Polygon#initialize} for constructor definition\n */\n fabric.Polygon = fabric.util.createClass(\n fabric.Polyline,\n /** @lends fabric.Polygon.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'polygon',\n\n /**\n * @private\n */\n _projectStrokeOnPoints: function () {\n return projectStrokeOnPoints(this.points, this);\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n if (!this.commonRender(ctx)) {\n return;\n }\n ctx.closePath();\n this._renderPaintInOrder(ctx);\n },\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by `fabric.Polygon.fromElement`)\n * @static\n * @memberOf fabric.Polygon\n * @see: http://www.w3.org/TR/SVG/shapes.html#PolygonElement\n */\n fabric.Polygon.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat();\n\n /**\n * Returns {@link fabric.Polygon} instance from an SVG element\n * @static\n * @memberOf fabric.Polygon\n * @param {SVGElement} element Element to parse\n * @param {Function} callback callback function invoked after parsing\n * @param {Object} [options] Options object\n */\n fabric.Polygon.fromElement = fabric.Polyline.fromElementGenerator('Polygon');\n /* _FROM_SVG_END_ */\n\n /**\n * Returns fabric.Polygon instance from an object representation\n * @static\n * @memberOf fabric.Polygon\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Polygon.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Polygon, object, {\n extraParam: 'points',\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { config } from '../config';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n clone = fabric.util.object.clone,\n toFixed = fabric.util.toFixed;\n\n /**\n * Path class\n * @class fabric.Path\n * @extends fabric.Object\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#path_and_pathgroup}\n * @see {@link fabric.Path#initialize} for constructor definition\n */\n fabric.Path = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Path.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'path',\n\n /**\n * Array of path points\n * @type Array\n * @default\n */\n path: null,\n\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'path',\n 'fillRule'\n ),\n\n stateProperties: fabric.Object.prototype.stateProperties.concat('path'),\n\n /**\n * Constructor\n * @param {Array|String} path Path data (sequence of coordinates and corresponding \"command\" tokens)\n * @param {Object} [options] Options object\n * @return {fabric.Path} thisArg\n */\n initialize: function (path, options) {\n options = clone(options || {});\n delete options.path;\n this.callSuper('initialize', options);\n this._setPath(path || [], options);\n },\n\n /**\n * @private\n * @param {Array|String} path Path data (sequence of coordinates and corresponding \"command\" tokens)\n * @param {Object} [options] Options object\n */\n _setPath: function (path, options) {\n this.path = fabric.util.makePathSimpler(\n Array.isArray(path) ? path : fabric.util.parsePath(path)\n );\n\n fabric.Polyline.prototype._setPositionDimensions.call(\n this,\n options || {}\n );\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx context to render path on\n */\n _renderPathCommands: function (ctx) {\n var current, // current instruction\n subpathStartX = 0,\n subpathStartY = 0,\n x = 0, // current x\n y = 0, // current y\n controlX = 0, // current control point x\n controlY = 0, // current control point y\n l = -this.pathOffset.x,\n t = -this.pathOffset.y;\n\n ctx.beginPath();\n\n for (var i = 0, len = this.path.length; i < len; ++i) {\n current = this.path[i];\n\n switch (\n current[0] // first letter\n ) {\n case 'L': // lineto, absolute\n x = current[1];\n y = current[2];\n ctx.lineTo(x + l, y + t);\n break;\n\n case 'M': // moveTo, absolute\n x = current[1];\n y = current[2];\n subpathStartX = x;\n subpathStartY = y;\n ctx.moveTo(x + l, y + t);\n break;\n\n case 'C': // bezierCurveTo, absolute\n x = current[5];\n y = current[6];\n controlX = current[3];\n controlY = current[4];\n ctx.bezierCurveTo(\n current[1] + l,\n current[2] + t,\n controlX + l,\n controlY + t,\n x + l,\n y + t\n );\n break;\n\n case 'Q': // quadraticCurveTo, absolute\n ctx.quadraticCurveTo(\n current[1] + l,\n current[2] + t,\n current[3] + l,\n current[4] + t\n );\n x = current[3];\n y = current[4];\n controlX = current[1];\n controlY = current[2];\n break;\n\n case 'z':\n case 'Z':\n x = subpathStartX;\n y = subpathStartY;\n ctx.closePath();\n break;\n }\n }\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx context to render path on\n */\n _render: function (ctx) {\n this._renderPathCommands(ctx);\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Returns string representation of an instance\n * @return {String} string representation of an instance\n */\n toString: function () {\n return (\n '#'\n );\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return extend(this.callSuper('toObject', propertiesToInclude), {\n path: this.path.map(function (item) {\n return item.slice();\n }),\n });\n },\n\n /**\n * Returns dataless object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toDatalessObject: function (propertiesToInclude) {\n var o = this.toObject(['sourcePath'].concat(propertiesToInclude));\n if (o.sourcePath) {\n delete o.path;\n }\n return o;\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var path = fabric.util.joinPath(this.path);\n return [\n '\\n',\n ];\n },\n\n _getOffsetTransform: function () {\n var digits = config.NUM_FRACTION_DIGITS;\n return (\n ' translate(' +\n toFixed(-this.pathOffset.x, digits) +\n ', ' +\n toFixed(-this.pathOffset.y, digits) +\n ')'\n );\n },\n\n /**\n * Returns svg clipPath representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toClipPathSVG: function (reviver) {\n var additionalTransform = this._getOffsetTransform();\n return (\n '\\t' +\n this._createBaseClipPathSVGMarkup(this._toSVG(), {\n reviver: reviver,\n additionalTransform: additionalTransform,\n })\n );\n },\n\n /**\n * Returns svg representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toSVG: function (reviver) {\n var additionalTransform = this._getOffsetTransform();\n return this._createBaseSVGMarkup(this._toSVG(), {\n reviver: reviver,\n additionalTransform: additionalTransform,\n });\n },\n /* _TO_SVG_END_ */\n\n /**\n * Returns number representation of an instance complexity\n * @return {Number} complexity of this instance\n */\n complexity: function () {\n return this.path.length;\n },\n\n /**\n * @private\n */\n _calcDimensions: function () {\n var aX = [],\n aY = [],\n current, // current instruction\n subpathStartX = 0,\n subpathStartY = 0,\n x = 0, // current x\n y = 0, // current y\n bounds;\n\n for (var i = 0, len = this.path.length; i < len; ++i) {\n current = this.path[i];\n\n switch (\n current[0] // first letter\n ) {\n case 'L': // lineto, absolute\n x = current[1];\n y = current[2];\n bounds = [];\n break;\n\n case 'M': // moveTo, absolute\n x = current[1];\n y = current[2];\n subpathStartX = x;\n subpathStartY = y;\n bounds = [];\n break;\n\n case 'C': // bezierCurveTo, absolute\n bounds = fabric.util.getBoundsOfCurve(\n x,\n y,\n current[1],\n current[2],\n current[3],\n current[4],\n current[5],\n current[6]\n );\n x = current[5];\n y = current[6];\n break;\n\n case 'Q': // quadraticCurveTo, absolute\n bounds = fabric.util.getBoundsOfCurve(\n x,\n y,\n current[1],\n current[2],\n current[1],\n current[2],\n current[3],\n current[4]\n );\n x = current[3];\n y = current[4];\n break;\n\n case 'z':\n case 'Z':\n x = subpathStartX;\n y = subpathStartY;\n break;\n }\n bounds.forEach(function (point) {\n aX.push(point.x);\n aY.push(point.y);\n });\n aX.push(x);\n aY.push(y);\n }\n\n var minX = Math.min(...aX) || 0,\n minY = Math.min(...aY) || 0,\n maxX = Math.max(...aX) || 0,\n maxY = Math.max(...aY) || 0,\n deltaX = maxX - minX,\n deltaY = maxY - minY;\n\n return {\n left: minX,\n top: minY,\n width: deltaX,\n height: deltaY,\n };\n },\n }\n );\n\n /**\n * Creates an instance of fabric.Path from an object\n * @static\n * @memberOf fabric.Path\n * @param {Object} object\n * @returns {Promise}\n */\n fabric.Path.fromObject = function (object) {\n return fabric.Object._fromObject(fabric.Path, object, {\n extraParam: 'path',\n });\n };\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by `fabric.Path.fromElement`)\n * @static\n * @memberOf fabric.Path\n * @see http://www.w3.org/TR/SVG/paths.html#PathElement\n */\n fabric.Path.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(['d']);\n\n /**\n * Creates an instance of fabric.Path from an SVG element\n * @static\n * @memberOf fabric.Path\n * @param {SVGElement} element to parse\n * @param {Function} callback Callback to invoke when an fabric.Path instance is created\n * @param {Object} [options] Options object\n * @param {Function} [callback] Options callback invoked after parsing is finished\n */\n fabric.Path.fromElement = function (element, callback, options) {\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Path.ATTRIBUTE_NAMES\n );\n parsedAttributes.fromSVG = true;\n callback(\n new fabric.Path(parsedAttributes.d, extend(parsedAttributes, options))\n );\n };\n /* _FROM_SVG_END_ */\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n multiplyTransformMatrices = fabric.util.multiplyTransformMatrices,\n invertTransform = fabric.util.invertTransform,\n transformPoint = fabric.util.transformPoint,\n applyTransformToObject = fabric.util.applyTransformToObject,\n degreesToRadians = fabric.util.degreesToRadians,\n clone = fabric.util.object.clone;\n /**\n * Group class\n * @class fabric.Group\n * @extends fabric.Object\n * @mixes fabric.Collection\n * @fires layout once layout completes\n * @see {@link fabric.Group#initialize} for constructor definition\n */\n fabric.Group = fabric.util.createClass(\n fabric.Object,\n fabric.Collection,\n /** @lends fabric.Group.prototype */ {\n /**\n * Type of an object\n * @type string\n * @default\n */\n type: 'group',\n\n /**\n * Specifies the **layout strategy** for instance\n * Used by `getLayoutStrategyResult` to calculate layout\n * `fit-content`, `fit-content-lazy`, `fixed`, `clip-path` are supported out of the box\n * @type string\n * @default\n */\n layout: 'fit-content',\n\n /**\n * Width of stroke\n * @type Number\n */\n strokeWidth: 0,\n\n /**\n * List of properties to consider when checking if state\n * of an object is changed (fabric.Object#hasStateChanged)\n * as well as for history (undo/redo) purposes\n * @type string[]\n */\n stateProperties: fabric.Object.prototype.stateProperties.concat('layout'),\n\n /**\n * Used to optimize performance\n * set to `false` if you don't need contained objects to be targets of events\n * @default\n * @type boolean\n */\n subTargetCheck: false,\n\n /**\n * Used to allow targeting of object inside groups.\n * set to true if you want to select an object inside a group.\\\n * **REQUIRES** `subTargetCheck` set to true\n * @default\n * @type boolean\n */\n interactive: false,\n\n /**\n * Used internally to optimize performance\n * Once an object is selected, instance is rendered without the selected object.\n * This way instance is cached only once for the entire interaction with the selected object.\n * @private\n */\n _activeObjects: undefined,\n\n /**\n * Constructor\n *\n * @param {fabric.Object[]} [objects] instance objects\n * @param {Object} [options] Options object\n * @param {boolean} [objectsRelativeToGroup] true if objects exist in group coordinate plane\n * @return {fabric.Group} thisArg\n */\n initialize: function (objects, options, objectsRelativeToGroup) {\n this._objects = objects || [];\n this._activeObjects = [];\n this.__objectMonitor = this.__objectMonitor.bind(this);\n this.__objectSelectionTracker = this.__objectSelectionMonitor.bind(\n this,\n true\n );\n this.__objectSelectionDisposer = this.__objectSelectionMonitor.bind(\n this,\n false\n );\n this._firstLayoutDone = false;\n // setting angle, skewX, skewY must occur after initial layout\n this.callSuper(\n 'initialize',\n Object.assign({}, options, { angle: 0, skewX: 0, skewY: 0 })\n );\n this.forEachObject(function (object) {\n this.enterGroup(object, false);\n }, this);\n this._applyLayoutStrategy({\n type: 'initialization',\n options: options,\n objectsRelativeToGroup: objectsRelativeToGroup,\n });\n },\n\n /**\n * @private\n * @param {string} key\n * @param {*} value\n */\n _set: function (key, value) {\n var prev = this[key];\n this.callSuper('_set', key, value);\n if (key === 'canvas' && prev !== value) {\n this.forEachObject(function (object) {\n object._set(key, value);\n });\n }\n if (key === 'layout' && prev !== value) {\n this._applyLayoutStrategy({\n type: 'layout_change',\n layout: value,\n prevLayout: prev,\n });\n }\n if (key === 'interactive') {\n this.forEachObject(this._watchObject.bind(this, value));\n }\n return this;\n },\n\n /**\n * @private\n */\n _shouldSetNestedCoords: function () {\n return this.subTargetCheck;\n },\n\n /**\n * Override this method to enhance performance (for groups with a lot of objects).\n * If Overriding, be sure not pass illegal objects to group - it will break your app.\n * @private\n */\n _filterObjectsBeforeEnteringGroup: function (objects) {\n return objects.filter(function (object, index, array) {\n // can enter AND is the first occurrence of the object in the passed args (to prevent adding duplicates)\n return this.canEnterGroup(object) && array.indexOf(object) === index;\n }, this);\n },\n\n /**\n * Add objects\n * @param {...fabric.Object} objects\n */\n add: function () {\n var allowedObjects = this._filterObjectsBeforeEnteringGroup(\n Array.from(arguments)\n );\n fabric.Collection.add.call(this, allowedObjects, this._onObjectAdded);\n this._onAfterObjectsChange('added', allowedObjects);\n },\n\n /**\n * Inserts an object into collection at specified index\n * @param {fabric.Object | fabric.Object[]} objects Object to insert\n * @param {Number} index Index to insert object at\n */\n insertAt: function (objects, index) {\n var allowedObjects = this._filterObjectsBeforeEnteringGroup(\n Array.isArray(objects) ? objects : [objects]\n );\n fabric.Collection.insertAt.call(\n this,\n allowedObjects,\n index,\n this._onObjectAdded\n );\n this._onAfterObjectsChange('added', allowedObjects);\n },\n\n /**\n * Remove objects\n * @param {...fabric.Object} objects\n * @returns {fabric.Object[]} removed objects\n */\n remove: function () {\n var removed = fabric.Collection.remove.call(\n this,\n arguments,\n this._onObjectRemoved\n );\n this._onAfterObjectsChange('removed', removed);\n return removed;\n },\n\n /**\n * Remove all objects\n * @returns {fabric.Object[]} removed objects\n */\n removeAll: function () {\n this._activeObjects = [];\n return this.remove.apply(this, this._objects.slice());\n },\n\n /**\n * invalidates layout on object modified\n * @private\n */\n __objectMonitor: function (opt) {\n this._applyLayoutStrategy(\n Object.assign({}, opt, {\n type: 'object_modified',\n })\n );\n this._set('dirty', true);\n },\n\n /**\n * keeps track of the selected objects\n * @private\n */\n __objectSelectionMonitor: function (selected, opt) {\n var object = opt.target;\n if (selected) {\n this._activeObjects.push(object);\n this._set('dirty', true);\n } else if (this._activeObjects.length > 0) {\n var index = this._activeObjects.indexOf(object);\n if (index > -1) {\n this._activeObjects.splice(index, 1);\n this._set('dirty', true);\n }\n }\n },\n\n /**\n * @private\n * @param {boolean} watch\n * @param {fabric.Object} object\n */\n _watchObject: function (watch, object) {\n var directive = watch ? 'on' : 'off';\n // make sure we listen only once\n watch && this._watchObject(false, object);\n object[directive]('changed', this.__objectMonitor);\n object[directive]('modified', this.__objectMonitor);\n object[directive]('selected', this.__objectSelectionTracker);\n object[directive]('deselected', this.__objectSelectionDisposer);\n },\n\n /**\n * Checks if object can enter group and logs relevant warnings\n * @private\n * @param {fabric.Object} object\n * @returns\n */\n canEnterGroup: function (object) {\n if (object === this || this.isDescendantOf(object)) {\n // prevent circular object tree\n /* _DEV_MODE_START_ */\n console.error(\n 'fabric.Group: circular object trees are not supported, this call has no effect'\n );\n /* _DEV_MODE_END_ */\n return false;\n } else if (this._objects.indexOf(object) !== -1) {\n // is already in the objects array\n /* _DEV_MODE_START_ */\n console.error(\n 'fabric.Group: duplicate objects are not supported inside group, this call has no effect'\n );\n /* _DEV_MODE_END_ */\n return false;\n }\n return true;\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane\n * @returns {boolean} true if object entered group\n */\n enterGroup: function (object, removeParentTransform) {\n if (object.group) {\n object.group.remove(object);\n }\n this._enterGroup(object, removeParentTransform);\n return true;\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane\n */\n _enterGroup: function (object, removeParentTransform) {\n if (removeParentTransform) {\n // can this be converted to utils (sendObjectToPlane)?\n applyTransformToObject(\n object,\n multiplyTransformMatrices(\n invertTransform(this.calcTransformMatrix()),\n object.calcTransformMatrix()\n )\n );\n }\n this._shouldSetNestedCoords() && object.setCoords();\n object._set('group', this);\n object._set('canvas', this.canvas);\n this.interactive && this._watchObject(true, object);\n var activeObject =\n this.canvas &&\n this.canvas.getActiveObject &&\n this.canvas.getActiveObject();\n // if we are adding the activeObject in a group\n if (\n activeObject &&\n (activeObject === object || object.isDescendantOf(activeObject))\n ) {\n this._activeObjects.push(object);\n }\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it\n */\n exitGroup: function (object, removeParentTransform) {\n this._exitGroup(object, removeParentTransform);\n object._set('canvas', undefined);\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it\n */\n _exitGroup: function (object, removeParentTransform) {\n object._set('group', undefined);\n if (!removeParentTransform) {\n applyTransformToObject(\n object,\n multiplyTransformMatrices(\n this.calcTransformMatrix(),\n object.calcTransformMatrix()\n )\n );\n object.setCoords();\n }\n this._watchObject(false, object);\n var index =\n this._activeObjects.length > 0\n ? this._activeObjects.indexOf(object)\n : -1;\n if (index > -1) {\n this._activeObjects.splice(index, 1);\n }\n },\n\n /**\n * @private\n * @param {'added'|'removed'} type\n * @param {fabric.Object[]} targets\n */\n _onAfterObjectsChange: function (type, targets) {\n this._applyLayoutStrategy({\n type: type,\n targets: targets,\n });\n this._set('dirty', true);\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n */\n _onObjectAdded: function (object) {\n this.enterGroup(object, true);\n object.fire('added', { target: this });\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n */\n _onRelativeObjectAdded: function (object) {\n this.enterGroup(object, false);\n object.fire('added', { target: this });\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it\n */\n _onObjectRemoved: function (object, removeParentTransform) {\n this.exitGroup(object, removeParentTransform);\n object.fire('removed', { target: this });\n },\n\n /**\n * Decide if the object should cache or not. Create its own cache level\n * needsItsOwnCache should be used when the object drawing method requires\n * a cache step. None of the fabric classes requires it.\n * Generally you do not cache objects in groups because the group is already cached.\n * @return {Boolean}\n */\n shouldCache: function () {\n var ownCache = fabric.Object.prototype.shouldCache.call(this);\n if (ownCache) {\n for (var i = 0; i < this._objects.length; i++) {\n if (this._objects[i].willDrawShadow()) {\n this.ownCaching = false;\n return false;\n }\n }\n }\n return ownCache;\n },\n\n /**\n * Check if this object or a child object will cast a shadow\n * @return {Boolean}\n */\n willDrawShadow: function () {\n if (fabric.Object.prototype.willDrawShadow.call(this)) {\n return true;\n }\n for (var i = 0; i < this._objects.length; i++) {\n if (this._objects[i].willDrawShadow()) {\n return true;\n }\n }\n return false;\n },\n\n /**\n * Check if instance or its group are caching, recursively up\n * @return {Boolean}\n */\n isOnACache: function () {\n return this.ownCaching || (!!this.group && this.group.isOnACache());\n },\n\n /**\n * Execute the drawing operation for an object on a specified context\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawObject: function (ctx) {\n this._renderBackground(ctx);\n for (var i = 0; i < this._objects.length; i++) {\n this._objects[i].render(ctx);\n }\n this._drawClipPath(ctx, this.clipPath);\n },\n\n /**\n * Check if cache is dirty\n */\n isCacheDirty: function (skipCanvas) {\n if (this.callSuper('isCacheDirty', skipCanvas)) {\n return true;\n }\n if (!this.statefullCache) {\n return false;\n }\n for (var i = 0; i < this._objects.length; i++) {\n if (this._objects[i].isCacheDirty(true)) {\n if (this._cacheCanvas) {\n // if this group has not a cache canvas there is nothing to clean\n var x = this.cacheWidth / this.zoomX,\n y = this.cacheHeight / this.zoomY;\n this._cacheContext.clearRect(-x / 2, -y / 2, x, y);\n }\n return true;\n }\n }\n return false;\n },\n\n /**\n * @override\n * @return {Boolean}\n */\n setCoords: function () {\n this.callSuper('setCoords');\n this._shouldSetNestedCoords() &&\n this.forEachObject(function (object) {\n object.setCoords();\n });\n },\n\n /**\n * Renders instance on a given context\n * @param {CanvasRenderingContext2D} ctx context to render instance on\n */\n render: function (ctx) {\n // used to inform objects not to double opacity\n this._transformDone = true;\n this.callSuper('render', ctx);\n this._transformDone = false;\n },\n\n /**\n * @public\n * @param {Partial & { layout?: string }} [context] pass values to use for layout calculations\n */\n triggerLayout: function (context) {\n if (context && context.layout) {\n context.prevLayout = this.layout;\n this.layout = context.layout;\n }\n this._applyLayoutStrategy({ type: 'imperative', context: context });\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {Point} diff\n */\n _adjustObjectPosition: function (object, diff) {\n object.set({\n left: object.left + diff.x,\n top: object.top + diff.y,\n });\n },\n\n /**\n * initial layout logic:\n * calculate bbox of objects (if necessary) and translate it according to options received from the constructor (left, top, width, height)\n * so it is placed in the center of the bbox received from the constructor\n *\n * @private\n * @param {LayoutContext} context\n */\n _applyLayoutStrategy: function (context) {\n var isFirstLayout = context.type === 'initialization';\n if (!isFirstLayout && !this._firstLayoutDone) {\n // reject layout requests before initialization layout\n return;\n }\n var options = isFirstLayout && context.options;\n var initialTransform = options && {\n angle: options.angle || 0,\n skewX: options.skewX || 0,\n skewY: options.skewY || 0,\n };\n var center = this.getRelativeCenterPoint();\n var result = this.getLayoutStrategyResult(\n this.layout,\n this._objects.concat(),\n context\n );\n if (result) {\n // handle positioning\n var newCenter = new Point(result.centerX, result.centerY);\n var vector = center\n .subtract(newCenter)\n .add(new Point(result.correctionX || 0, result.correctionY || 0));\n var diff = transformPoint(\n vector,\n invertTransform(this.calcOwnMatrix()),\n true\n );\n // set dimensions\n this.set({ width: result.width, height: result.height });\n // adjust objects to account for new center\n !context.objectsRelativeToGroup &&\n this.forEachObject(function (object) {\n this._adjustObjectPosition(object, diff);\n }, this);\n // clip path as well\n !isFirstLayout &&\n this.layout !== 'clip-path' &&\n this.clipPath &&\n !this.clipPath.absolutePositioned &&\n this._adjustObjectPosition(this.clipPath, diff);\n if (!newCenter.eq(center) || initialTransform) {\n // set position\n this.setPositionByOrigin(newCenter, 'center', 'center');\n initialTransform && this.set(initialTransform);\n this.setCoords();\n }\n } else if (isFirstLayout) {\n // fill `result` with initial values for the layout hook\n result = {\n centerX: center.x,\n centerY: center.y,\n width: this.width,\n height: this.height,\n };\n initialTransform && this.set(initialTransform);\n } else {\n // no `result` so we return\n return;\n }\n // flag for next layouts\n this._firstLayoutDone = true;\n // fire layout hook and event (event will fire only for layouts after initialization layout)\n this.onLayout(context, result);\n this.fire('layout', {\n context: context,\n result: result,\n diff: diff,\n });\n // recursive up\n if (this.group && this.group._applyLayoutStrategy) {\n // append the path recursion to context\n if (!context.path) {\n context.path = [];\n }\n context.path.push(this);\n // all parents should invalidate their layout\n this.group._applyLayoutStrategy(context);\n }\n },\n\n /**\n * Override this method to customize layout.\n * If you need to run logic once layout completes use `onLayout`\n * @public\n *\n * @typedef {'initialization'|'object_modified'|'added'|'removed'|'layout_change'|'imperative'} LayoutContextType\n *\n * @typedef LayoutContext context object with data regarding what triggered the call\n * @property {LayoutContextType} type\n * @property {fabric.Object[]} [path] array of objects starting from the object that triggered the call to the current one\n *\n * @typedef LayoutResult positioning and layout data **relative** to instance's parent\n * @property {number} centerX new centerX as measured by the containing plane (same as `left` with `originX` set to `center`)\n * @property {number} centerY new centerY as measured by the containing plane (same as `top` with `originY` set to `center`)\n * @property {number} [correctionX] correctionX to translate objects by, measured as `centerX`\n * @property {number} [correctionY] correctionY to translate objects by, measured as `centerY`\n * @property {number} width\n * @property {number} height\n *\n * @param {string} layoutDirective\n * @param {fabric.Object[]} objects\n * @param {LayoutContext} context\n * @returns {LayoutResult | undefined}\n */\n getLayoutStrategyResult: function (layoutDirective, objects, context) {\n // eslint-disable-line no-unused-vars\n // `fit-content-lazy` performance enhancement\n // skip if instance had no objects before the `added` event because it may have kept layout after removing all previous objects\n if (\n layoutDirective === 'fit-content-lazy' &&\n context.type === 'added' &&\n objects.length > context.targets.length\n ) {\n // calculate added objects' bbox with existing bbox\n var addedObjects = context.targets.concat(this);\n return this.prepareBoundingBox(\n layoutDirective,\n addedObjects,\n context\n );\n } else if (\n layoutDirective === 'fit-content' ||\n layoutDirective === 'fit-content-lazy' ||\n (layoutDirective === 'fixed' &&\n (context.type === 'initialization' ||\n context.type === 'imperative'))\n ) {\n return this.prepareBoundingBox(layoutDirective, objects, context);\n } else if (layoutDirective === 'clip-path' && this.clipPath) {\n var clipPath = this.clipPath;\n var clipPathSizeAfter = clipPath._getTransformedDimensions();\n if (\n clipPath.absolutePositioned &&\n (context.type === 'initialization' ||\n context.type === 'layout_change')\n ) {\n // we want the center point to exist in group's containing plane\n var clipPathCenter = clipPath.getCenterPoint();\n if (this.group) {\n // send point from canvas plane to group's containing plane\n var inv = invertTransform(this.group.calcTransformMatrix());\n clipPathCenter = transformPoint(clipPathCenter, inv);\n }\n return {\n centerX: clipPathCenter.x,\n centerY: clipPathCenter.y,\n width: clipPathSizeAfter.x,\n height: clipPathSizeAfter.y,\n };\n } else if (!clipPath.absolutePositioned) {\n var center;\n var clipPathRelativeCenter = clipPath.getRelativeCenterPoint(),\n // we want the center point to exist in group's containing plane, so we send it upwards\n clipPathCenter = transformPoint(\n clipPathRelativeCenter,\n this.calcOwnMatrix(),\n true\n );\n if (\n context.type === 'initialization' ||\n context.type === 'layout_change'\n ) {\n var bbox =\n this.prepareBoundingBox(layoutDirective, objects, context) ||\n {};\n center = new Point(bbox.centerX || 0, bbox.centerY || 0);\n return {\n centerX: center.x + clipPathCenter.x,\n centerY: center.y + clipPathCenter.y,\n correctionX: bbox.correctionX - clipPathCenter.x,\n correctionY: bbox.correctionY - clipPathCenter.y,\n width: clipPath.width,\n height: clipPath.height,\n };\n } else {\n center = this.getRelativeCenterPoint();\n return {\n centerX: center.x + clipPathCenter.x,\n centerY: center.y + clipPathCenter.y,\n width: clipPathSizeAfter.x,\n height: clipPathSizeAfter.y,\n };\n }\n }\n } else if (\n layoutDirective === 'svg' &&\n context.type === 'initialization'\n ) {\n var bbox = this.getObjectsBoundingBox(objects, true) || {};\n return Object.assign(bbox, {\n correctionX: -bbox.offsetX || 0,\n correctionY: -bbox.offsetY || 0,\n });\n }\n },\n\n /**\n * Override this method to customize layout.\n * A wrapper around {@link fabric.Group#getObjectsBoundingBox}\n * @public\n * @param {string} layoutDirective\n * @param {fabric.Object[]} objects\n * @param {LayoutContext} context\n * @returns {LayoutResult | undefined}\n */\n prepareBoundingBox: function (layoutDirective, objects, context) {\n if (context.type === 'initialization') {\n return this.prepareInitialBoundingBox(\n layoutDirective,\n objects,\n context\n );\n } else if (context.type === 'imperative' && context.context) {\n return Object.assign(\n this.getObjectsBoundingBox(objects) || {},\n context.context\n );\n } else {\n return this.getObjectsBoundingBox(objects);\n }\n },\n\n /**\n * Calculates center taking into account originX, originY while not being sure that width/height are initialized\n * @public\n * @param {string} layoutDirective\n * @param {fabric.Object[]} objects\n * @param {LayoutContext} context\n * @returns {LayoutResult | undefined}\n */\n prepareInitialBoundingBox: function (layoutDirective, objects, context) {\n var options = context.options || {},\n hasX = typeof options.left === 'number',\n hasY = typeof options.top === 'number',\n hasWidth = typeof options.width === 'number',\n hasHeight = typeof options.height === 'number';\n\n // performance enhancement\n // skip layout calculation if bbox is defined\n if (\n (hasX &&\n hasY &&\n hasWidth &&\n hasHeight &&\n context.objectsRelativeToGroup) ||\n objects.length === 0\n ) {\n // return nothing to skip layout\n return;\n }\n\n var bbox = this.getObjectsBoundingBox(objects) || {};\n var width = hasWidth ? this.width : bbox.width || 0,\n height = hasHeight ? this.height : bbox.height || 0,\n calculatedCenter = new Point(bbox.centerX || 0, bbox.centerY || 0),\n origin = new Point(\n this.resolveOriginX(this.originX),\n this.resolveOriginY(this.originY)\n ),\n size = new Point(width, height),\n strokeWidthVector = this._getTransformedDimensions({\n width: 0,\n height: 0,\n }),\n sizeAfter = this._getTransformedDimensions({\n width: width,\n height: height,\n strokeWidth: 0,\n }),\n bboxSizeAfter = this._getTransformedDimensions({\n width: bbox.width,\n height: bbox.height,\n strokeWidth: 0,\n }),\n rotationCorrection = new Point(0, 0);\n\n // calculate center and correction\n var originT = origin.scalarAdd(0.5);\n var originCorrection = sizeAfter.multiply(originT);\n var centerCorrection = new Point(\n hasWidth ? bboxSizeAfter.x / 2 : originCorrection.x,\n hasHeight ? bboxSizeAfter.y / 2 : originCorrection.y\n );\n var center = new Point(\n hasX\n ? this.left - (sizeAfter.x + strokeWidthVector.x) * origin.x\n : calculatedCenter.x - centerCorrection.x,\n hasY\n ? this.top - (sizeAfter.y + strokeWidthVector.y) * origin.y\n : calculatedCenter.y - centerCorrection.y\n );\n var offsetCorrection = new Point(\n hasX\n ? center.x -\n calculatedCenter.x +\n bboxSizeAfter.x * (hasWidth ? 0.5 : 0)\n : -(hasWidth\n ? (sizeAfter.x - strokeWidthVector.x) * 0.5\n : sizeAfter.x * originT.x),\n hasY\n ? center.y -\n calculatedCenter.y +\n bboxSizeAfter.y * (hasHeight ? 0.5 : 0)\n : -(hasHeight\n ? (sizeAfter.y - strokeWidthVector.y) * 0.5\n : sizeAfter.y * originT.y)\n ).add(rotationCorrection);\n var correction = new Point(\n hasWidth ? -sizeAfter.x / 2 : 0,\n hasHeight ? -sizeAfter.y / 2 : 0\n ).add(offsetCorrection);\n\n return {\n centerX: center.x,\n centerY: center.y,\n correctionX: correction.x,\n correctionY: correction.y,\n width: size.x,\n height: size.y,\n };\n },\n\n /**\n * Calculate the bbox of objects relative to instance's containing plane\n * @public\n * @param {fabric.Object[]} objects\n * @returns {LayoutResult | null} bounding box\n */\n getObjectsBoundingBox: function (objects, ignoreOffset) {\n if (objects.length === 0) {\n return null;\n }\n var objCenter, sizeVector, min, max, a, b;\n objects.forEach(function (object, i) {\n objCenter = object.getRelativeCenterPoint();\n sizeVector = object._getTransformedDimensions().scalarDivide(2);\n if (object.angle) {\n var rad = degreesToRadians(object.angle),\n sin = Math.abs(fabric.util.sin(rad)),\n cos = Math.abs(fabric.util.cos(rad)),\n rx = sizeVector.x * cos + sizeVector.y * sin,\n ry = sizeVector.x * sin + sizeVector.y * cos;\n sizeVector = new Point(rx, ry);\n }\n a = objCenter.subtract(sizeVector);\n b = objCenter.add(sizeVector);\n if (i === 0) {\n min = new Point(Math.min(a.x, b.x), Math.min(a.y, b.y));\n max = new Point(Math.max(a.x, b.x), Math.max(a.y, b.y));\n } else {\n min.setXY(Math.min(min.x, a.x, b.x), Math.min(min.y, a.y, b.y));\n max.setXY(Math.max(max.x, a.x, b.x), Math.max(max.y, a.y, b.y));\n }\n });\n\n var size = max.subtract(min),\n relativeCenter = ignoreOffset\n ? size.scalarDivide(2)\n : min.midPointFrom(max),\n // we send `relativeCenter` up to group's containing plane\n offset = transformPoint(min, this.calcOwnMatrix()),\n center = transformPoint(relativeCenter, this.calcOwnMatrix());\n\n return {\n offsetX: offset.x,\n offsetY: offset.y,\n centerX: center.x,\n centerY: center.y,\n width: size.x,\n height: size.y,\n };\n },\n\n /**\n * Hook that is called once layout has completed.\n * Provided for layout customization, override if necessary.\n * Complements `getLayoutStrategyResult`, which is called at the beginning of layout.\n * @public\n * @param {LayoutContext} context layout context\n * @param {LayoutResult} result layout result\n */\n onLayout: function (/* context, result */) {\n // override by subclass\n },\n\n /**\n *\n * @private\n * @param {'toObject'|'toDatalessObject'} [method]\n * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @returns {fabric.Object[]} serialized objects\n */\n __serializeObjects: function (method, propertiesToInclude) {\n var _includeDefaultValues = this.includeDefaultValues;\n return this._objects\n .filter(function (obj) {\n return !obj.excludeFromExport;\n })\n .map(function (obj) {\n var originalDefaults = obj.includeDefaultValues;\n obj.includeDefaultValues = _includeDefaultValues;\n var data = obj[method || 'toObject'](propertiesToInclude);\n obj.includeDefaultValues = originalDefaults;\n //delete data.version;\n return data;\n });\n },\n\n /**\n * Returns object representation of an instance\n * @param {string[]} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n var obj = this.callSuper(\n 'toObject',\n ['layout', 'subTargetCheck', 'interactive'].concat(\n propertiesToInclude\n )\n );\n obj.objects = this.__serializeObjects('toObject', propertiesToInclude);\n return obj;\n },\n\n toString: function () {\n return '#';\n },\n\n dispose: function () {\n this._activeObjects = [];\n this.forEachObject(function (object) {\n this._watchObject(false, object);\n object.dispose && object.dispose();\n }, this);\n this.callSuper('dispose');\n },\n\n /* _TO_SVG_START_ */\n\n /**\n * @private\n */\n _createSVGBgRect: function (reviver) {\n if (!this.backgroundColor) {\n return '';\n }\n var fillStroke = fabric.Rect.prototype._toSVG.call(this, reviver);\n var commons = fillStroke.indexOf('COMMON_PARTS');\n fillStroke[commons] = 'for=\"group\" ';\n return fillStroke.join('');\n },\n\n /**\n * Returns svg representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n _toSVG: function (reviver) {\n var svgString = ['\\n'];\n var bg = this._createSVGBgRect(reviver);\n bg && svgString.push('\\t\\t', bg);\n for (var i = 0; i < this._objects.length; i++) {\n svgString.push('\\t\\t', this._objects[i].toSVG(reviver));\n }\n svgString.push('\\n');\n return svgString;\n },\n\n /**\n * Returns styles-string for svg-export, specific version for group\n * @return {String}\n */\n getSvgStyles: function () {\n var opacity =\n typeof this.opacity !== 'undefined' && this.opacity !== 1\n ? 'opacity: ' + this.opacity + ';'\n : '',\n visibility = this.visible ? '' : ' visibility: hidden;';\n return [opacity, this.getSvgFilter(), visibility].join('');\n },\n\n /**\n * Returns svg clipPath representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toClipPathSVG: function (reviver) {\n var svgString = [];\n var bg = this._createSVGBgRect(reviver);\n bg && svgString.push('\\t', bg);\n for (var i = 0; i < this._objects.length; i++) {\n svgString.push('\\t', this._objects[i].toClipPathSVG(reviver));\n }\n return this._createBaseClipPathSVGMarkup(svgString, {\n reviver: reviver,\n });\n },\n /* _TO_SVG_END_ */\n }\n );\n\n /**\n * @todo support loading from svg\n * @private\n * @static\n * @memberOf fabric.Group\n * @param {Object} object Object to create a group from\n * @returns {Promise}\n */\n fabric.Group.fromObject = function (object) {\n var objects = object.objects || [],\n options = clone(object, true);\n delete options.objects;\n return Promise.all([\n fabric.util.enlivenObjects(objects),\n fabric.util.enlivenObjectEnlivables(options),\n ]).then(function (enlivened) {\n return new fabric.Group(\n enlivened[0],\n Object.assign(options, enlivened[1]),\n true\n );\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n\n /**\n * Group class\n * @class fabric.ActiveSelection\n * @extends fabric.Group\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-3#groups}\n * @see {@link fabric.ActiveSelection#initialize} for constructor definition\n */\n fabric.ActiveSelection = fabric.util.createClass(\n fabric.Group,\n /** @lends fabric.ActiveSelection.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'activeSelection',\n\n /**\n * @override\n */\n layout: 'fit-content',\n\n /**\n * @override\n */\n subTargetCheck: false,\n\n /**\n * @override\n */\n interactive: false,\n\n /**\n * Constructor\n *\n * @param {fabric.Object[]} [objects] instance objects\n * @param {Object} [options] Options object\n * @param {boolean} [objectsRelativeToGroup] true if objects exist in group coordinate plane\n * @return {fabric.ActiveSelection} thisArg\n */\n initialize: function (objects, options, objectsRelativeToGroup) {\n this.callSuper('initialize', objects, options, objectsRelativeToGroup);\n this.setCoords();\n },\n\n /**\n * @private\n */\n _shouldSetNestedCoords: function () {\n return true;\n },\n\n /**\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object is in canvas coordinate plane\n * @returns {boolean} true if object entered group\n */\n enterGroup: function (object, removeParentTransform) {\n if (object.group) {\n // save ref to group for later in order to return to it\n var parent = object.group;\n parent._exitGroup(object);\n object.__owningGroup = parent;\n }\n this._enterGroup(object, removeParentTransform);\n return true;\n },\n\n /**\n * we want objects to retain their canvas ref when exiting instance\n * @private\n * @param {fabric.Object} object\n * @param {boolean} [removeParentTransform] true if object should exit group without applying group's transform to it\n */\n exitGroup: function (object, removeParentTransform) {\n this._exitGroup(object, removeParentTransform);\n var parent = object.__owningGroup;\n if (parent) {\n // return to owning group\n parent.enterGroup(object);\n delete object.__owningGroup;\n }\n },\n\n /**\n * @private\n * @param {'added'|'removed'} type\n * @param {fabric.Object[]} targets\n */\n _onAfterObjectsChange: function (type, targets) {\n var groups = [];\n targets.forEach(function (object) {\n object.group &&\n !groups.includes(object.group) &&\n groups.push(object.group);\n });\n if (type === 'removed') {\n // invalidate groups' layout and mark as dirty\n groups.forEach(function (group) {\n group._onAfterObjectsChange('added', targets);\n });\n } else {\n // mark groups as dirty\n groups.forEach(function (group) {\n group._set('dirty', true);\n });\n }\n },\n\n /**\n * If returns true, deselection is cancelled.\n * @since 2.0.0\n * @return {Boolean} [cancel]\n */\n onDeselect: function () {\n this.removeAll();\n return false;\n },\n\n /**\n * Returns string representation of a group\n * @return {String}\n */\n toString: function () {\n return '#';\n },\n\n /**\n * Decide if the object should cache or not. Create its own cache level\n * objectCaching is a global flag, wins over everything\n * needsItsOwnCache should be used when the object drawing method requires\n * a cache step. None of the fabric classes requires it.\n * Generally you do not cache objects in groups because the group outside is cached.\n * @return {Boolean}\n */\n shouldCache: function () {\n return false;\n },\n\n /**\n * Check if this group or its parent group are caching, recursively up\n * @return {Boolean}\n */\n isOnACache: function () {\n return false;\n },\n\n /**\n * Renders controls and borders for the object\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Object} [styleOverride] properties to override the object style\n * @param {Object} [childrenOverride] properties to override the children overrides\n */\n _renderControls: function (ctx, styleOverride, childrenOverride) {\n ctx.save();\n ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1;\n this.callSuper('_renderControls', ctx, styleOverride);\n var options = Object.assign({ hasControls: false }, childrenOverride, {\n forActiveSelection: true,\n });\n for (var i = 0; i < this._objects.length; i++) {\n this._objects[i]._renderControls(ctx, options);\n }\n ctx.restore();\n },\n }\n );\n\n /**\n * Returns {@link fabric.ActiveSelection} instance from an object representation\n * @static\n * @memberOf fabric.ActiveSelection\n * @param {Object} object Object to create a group from\n * @returns {Promise}\n */\n fabric.ActiveSelection.fromObject = function (object) {\n var objects = object.objects,\n options = fabric.util.object.clone(object, true);\n delete options.objects;\n return fabric.util\n .enlivenObjects(objects)\n .then(function (enlivenedObjects) {\n return new fabric.ActiveSelection(enlivenedObjects, options, true);\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n extend = fabric.util.object.extend;\n /**\n * Image class\n * @class fabric.Image\n * @extends fabric.Object\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-1#images}\n * @see {@link fabric.Image#initialize} for constructor definition\n */\n fabric.Image = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Image.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'image',\n\n /**\n * Width of a stroke.\n * For image quality a stroke multiple of 2 gives better results.\n * @type Number\n * @default\n */\n strokeWidth: 0,\n\n /**\n * When calling {@link fabric.Image.getSrc}, return value from element src with `element.getAttribute('src')`.\n * This allows for relative urls as image src.\n * @since 2.7.0\n * @type Boolean\n * @default\n */\n srcFromAttribute: false,\n\n /**\n * private\n * contains last value of scaleX to detect\n * if the Image got resized after the last Render\n * @type Number\n */\n _lastScaleX: 1,\n\n /**\n * private\n * contains last value of scaleY to detect\n * if the Image got resized after the last Render\n * @type Number\n */\n _lastScaleY: 1,\n\n /**\n * private\n * contains last value of scaling applied by the apply filter chain\n * @type Number\n */\n _filterScalingX: 1,\n\n /**\n * private\n * contains last value of scaling applied by the apply filter chain\n * @type Number\n */\n _filterScalingY: 1,\n\n /**\n * minimum scale factor under which any resizeFilter is triggered to resize the image\n * 0 will disable the automatic resize. 1 will trigger automatically always.\n * number bigger than 1 are not implemented yet.\n * @type Number\n */\n minimumScaleTrigger: 0.5,\n\n /**\n * List of properties to consider when checking if\n * state of an object is changed ({@link fabric.Object#hasStateChanged})\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties: fabric.Object.prototype.stateProperties.concat(\n 'cropX',\n 'cropY'\n ),\n\n /**\n * List of properties to consider when checking if cache needs refresh\n * Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single\n * calls to Object.set(key, value). If the key is in this list, the object is marked as dirty\n * and refreshed at the next render\n * @type Array\n */\n cacheProperties: fabric.Object.prototype.cacheProperties.concat(\n 'cropX',\n 'cropY'\n ),\n\n /**\n * key used to retrieve the texture representing this image\n * @since 2.0.0\n * @type String\n * @default\n */\n cacheKey: '',\n\n /**\n * Image crop in pixels from original image size.\n * @since 2.0.0\n * @type Number\n * @default\n */\n cropX: 0,\n\n /**\n * Image crop in pixels from original image size.\n * @since 2.0.0\n * @type Number\n * @default\n */\n cropY: 0,\n\n /**\n * Indicates whether this canvas will use image smoothing when painting this image.\n * Also influence if the cacheCanvas for this image uses imageSmoothing\n * @since 4.0.0-beta.11\n * @type Boolean\n * @default\n */\n imageSmoothing: true,\n\n /**\n * Constructor\n * Image can be initialized with any canvas drawable or a string.\n * The string should be a url and will be loaded as an image.\n * Canvas and Image element work out of the box, while videos require extra code to work.\n * Please check video element events for seeking.\n * @param {HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | String} element Image element\n * @param {Object} [options] Options object\n * @return {fabric.Image} thisArg\n */\n initialize: function (element, options) {\n options || (options = {});\n this.filters = [];\n this.cacheKey = 'texture' + fabric.Object.__uid++;\n this.callSuper('initialize', options);\n this._initElement(element, options);\n },\n\n /**\n * Returns image element which this instance if based on\n * @return {HTMLImageElement} Image element\n */\n getElement: function () {\n return this._element || {};\n },\n\n /**\n * Sets image element for this instance to a specified one.\n * If filters defined they are applied to new image.\n * You might need to call `canvas.renderAll` and `object.setCoords` after replacing, to render new image and update controls area.\n * @param {HTMLImageElement} element\n * @param {Object} [options] Options object\n * @return {fabric.Image} thisArg\n * @chainable\n */\n setElement: function (element, options) {\n this.removeTexture(this.cacheKey);\n this.removeTexture(this.cacheKey + '_filtered');\n this._element = element;\n this._originalElement = element;\n this._initConfig(options);\n element.classList.add(fabric.Image.CSS_CANVAS);\n if (this.filters.length !== 0) {\n this.applyFilters();\n }\n // resizeFilters work on the already filtered copy.\n // we need to apply resizeFilters AFTER normal filters.\n // applyResizeFilters is run more often than normal filters\n // and is triggered by user interactions rather than dev code\n if (this.resizeFilter) {\n this.applyResizeFilters();\n }\n return this;\n },\n\n /**\n * Delete a single texture if in webgl mode\n */\n removeTexture: function (key) {\n var backend = fabric.filterBackend;\n if (backend && backend.evictCachesForKey) {\n backend.evictCachesForKey(key);\n }\n },\n\n /**\n * Delete textures, reference to elements and eventually JSDOM cleanup\n */\n dispose: function () {\n this.callSuper('dispose');\n this.removeTexture(this.cacheKey);\n this.removeTexture(this.cacheKey + '_filtered');\n this._cacheContext = undefined;\n ['_originalElement', '_element', '_filteredEl', '_cacheCanvas'].forEach(\n function (element) {\n fabric.util.cleanUpJsdomNode(this[element]);\n this[element] = undefined;\n }.bind(this)\n );\n },\n\n /**\n * Get the crossOrigin value (of the corresponding image element)\n */\n getCrossOrigin: function () {\n return (\n this._originalElement && (this._originalElement.crossOrigin || null)\n );\n },\n\n /**\n * Returns original size of an image\n * @return {Object} Object with \"width\" and \"height\" properties\n */\n getOriginalSize: function () {\n var element = this.getElement();\n return {\n width: element.naturalWidth || element.width,\n height: element.naturalHeight || element.height,\n };\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _stroke: function (ctx) {\n if (!this.stroke || this.strokeWidth === 0) {\n return;\n }\n var w = this.width / 2,\n h = this.height / 2;\n ctx.beginPath();\n ctx.moveTo(-w, -h);\n ctx.lineTo(w, -h);\n ctx.lineTo(w, h);\n ctx.lineTo(-w, h);\n ctx.lineTo(-w, -h);\n ctx.closePath();\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n var filters = [];\n\n this.filters.forEach(function (filterObj) {\n if (filterObj) {\n filters.push(filterObj.toObject());\n }\n });\n var object = extend(\n this.callSuper(\n 'toObject',\n ['cropX', 'cropY'].concat(propertiesToInclude)\n ),\n {\n src: this.getSrc(),\n crossOrigin: this.getCrossOrigin(),\n filters: filters,\n }\n );\n if (this.resizeFilter) {\n object.resizeFilter = this.resizeFilter.toObject();\n }\n return object;\n },\n\n /**\n * Returns true if an image has crop applied, inspecting values of cropX,cropY,width,height.\n * @return {Boolean}\n */\n hasCrop: function () {\n return (\n this.cropX ||\n this.cropY ||\n this.width < this._element.width ||\n this.height < this._element.height\n );\n },\n\n /* _TO_SVG_START_ */\n /**\n * Returns svg representation of an instance\n * @return {Array} an array of strings with the specific svg representation\n * of the instance\n */\n _toSVG: function () {\n var svgString = [],\n imageMarkup = [],\n strokeSvg,\n element = this._element,\n x = -this.width / 2,\n y = -this.height / 2,\n clipPath = '',\n imageRendering = '';\n if (!element) {\n return [];\n }\n if (this.hasCrop()) {\n var clipPathId = fabric.Object.__uid++;\n svgString.push(\n '\\n',\n '\\t\\n',\n '\\n'\n );\n clipPath = ' clip-path=\"url(#imageCrop_' + clipPathId + ')\" ';\n }\n if (!this.imageSmoothing) {\n imageRendering = '\" image-rendering=\"optimizeSpeed';\n }\n imageMarkup.push(\n '\\t element with actual transformation, then offsetting object to the top/left\n // so that object's center aligns with container's left/top\n '\" width=\"',\n element.width || element.naturalWidth,\n '\" height=\"',\n element.height || element.height,\n imageRendering,\n '\"',\n clipPath,\n '>\\n'\n );\n\n if (this.stroke || this.strokeDashArray) {\n var origFill = this.fill;\n this.fill = null;\n strokeSvg = [\n '\\t\\n',\n ];\n this.fill = origFill;\n }\n if (this.paintFirst !== 'fill') {\n svgString = svgString.concat(strokeSvg, imageMarkup);\n } else {\n svgString = svgString.concat(imageMarkup, strokeSvg);\n }\n return svgString;\n },\n /* _TO_SVG_END_ */\n\n /**\n * Returns source of an image\n * @param {Boolean} filtered indicates if the src is needed for svg\n * @return {String} Source of an image\n */\n getSrc: function (filtered) {\n var element = filtered ? this._element : this._originalElement;\n if (element) {\n if (element.toDataURL) {\n return element.toDataURL();\n }\n\n if (this.srcFromAttribute) {\n return element.getAttribute('src');\n } else {\n return element.src;\n }\n } else {\n return this.src || '';\n }\n },\n\n /**\n * Loads and sets source of an image\\\n * **IMPORTANT**: It is recommended to abort loading tasks before calling this method to prevent race conditions and unnecessary networking\n * @param {String} src Source string (URL)\n * @param {Object} [options] Options object\n * @param {AbortSignal} [options.signal] see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @param {String} [options.crossOrigin] crossOrigin value (one of \"\", \"anonymous\", \"use-credentials\")\n * @see https://developer.mozilla.org/en-US/docs/HTML/CORS_settings_attributes\n * @return {Promise} thisArg\n */\n setSrc: function (src, options) {\n var _this = this;\n return fabric.util.loadImage(src, options).then(function (img) {\n _this.setElement(img, options);\n _this._setWidthHeight();\n return _this;\n });\n },\n\n /**\n * Returns string representation of an instance\n * @return {String} String representation of an instance\n */\n toString: function () {\n return '#';\n },\n\n applyResizeFilters: function () {\n var filter = this.resizeFilter,\n minimumScale = this.minimumScaleTrigger,\n objectScale = this.getTotalObjectScaling(),\n scaleX = objectScale.x,\n scaleY = objectScale.y,\n elementToFilter = this._filteredEl || this._originalElement;\n if (this.group) {\n this.set('dirty', true);\n }\n if (!filter || (scaleX > minimumScale && scaleY > minimumScale)) {\n this._element = elementToFilter;\n this._filterScalingX = 1;\n this._filterScalingY = 1;\n this._lastScaleX = scaleX;\n this._lastScaleY = scaleY;\n return;\n }\n if (!fabric.filterBackend) {\n fabric.filterBackend = fabric.initFilterBackend();\n }\n var canvasEl = fabric.util.createCanvasElement(),\n cacheKey = this._filteredEl\n ? this.cacheKey + '_filtered'\n : this.cacheKey,\n sourceWidth = elementToFilter.width,\n sourceHeight = elementToFilter.height;\n canvasEl.width = sourceWidth;\n canvasEl.height = sourceHeight;\n this._element = canvasEl;\n this._lastScaleX = filter.scaleX = scaleX;\n this._lastScaleY = filter.scaleY = scaleY;\n fabric.filterBackend.applyFilters(\n [filter],\n elementToFilter,\n sourceWidth,\n sourceHeight,\n this._element,\n cacheKey\n );\n this._filterScalingX = canvasEl.width / this._originalElement.width;\n this._filterScalingY = canvasEl.height / this._originalElement.height;\n },\n\n /**\n * Applies filters assigned to this image (from \"filters\" array) or from filter param\n * @method applyFilters\n * @param {Array} filters to be applied\n * @param {Boolean} forResizing specify if the filter operation is a resize operation\n * @return {thisArg} return the fabric.Image object\n * @chainable\n */\n applyFilters: function (filters) {\n filters = filters || this.filters || [];\n filters = filters.filter(function (filter) {\n return filter && !filter.isNeutralState();\n });\n this.set('dirty', true);\n\n // needs to clear out or WEBGL will not resize correctly\n this.removeTexture(this.cacheKey + '_filtered');\n\n if (filters.length === 0) {\n this._element = this._originalElement;\n this._filteredEl = null;\n this._filterScalingX = 1;\n this._filterScalingY = 1;\n return this;\n }\n\n var imgElement = this._originalElement,\n sourceWidth = imgElement.naturalWidth || imgElement.width,\n sourceHeight = imgElement.naturalHeight || imgElement.height;\n\n if (this._element === this._originalElement) {\n // if the element is the same we need to create a new element\n var canvasEl = fabric.util.createCanvasElement();\n canvasEl.width = sourceWidth;\n canvasEl.height = sourceHeight;\n this._element = canvasEl;\n this._filteredEl = canvasEl;\n } else {\n // clear the existing element to get new filter data\n // also dereference the eventual resized _element\n this._element = this._filteredEl;\n this._filteredEl\n .getContext('2d')\n .clearRect(0, 0, sourceWidth, sourceHeight);\n // we also need to resize again at next renderAll, so remove saved _lastScaleX/Y\n this._lastScaleX = 1;\n this._lastScaleY = 1;\n }\n if (!fabric.filterBackend) {\n fabric.filterBackend = fabric.initFilterBackend();\n }\n fabric.filterBackend.applyFilters(\n filters,\n this._originalElement,\n sourceWidth,\n sourceHeight,\n this._element,\n this.cacheKey\n );\n if (\n this._originalElement.width !== this._element.width ||\n this._originalElement.height !== this._element.height\n ) {\n this._filterScalingX =\n this._element.width / this._originalElement.width;\n this._filterScalingY =\n this._element.height / this._originalElement.height;\n }\n return this;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n ctx.imageSmoothingEnabled = this.imageSmoothing;\n if (\n this.isMoving !== true &&\n this.resizeFilter &&\n this._needsResize()\n ) {\n this.applyResizeFilters();\n }\n this._stroke(ctx);\n this._renderPaintInOrder(ctx);\n },\n\n /**\n * Paint the cached copy of the object on the target context.\n * it will set the imageSmoothing for the draw operation\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n drawCacheOnCanvas: function (ctx) {\n ctx.imageSmoothingEnabled = this.imageSmoothing;\n fabric.Object.prototype.drawCacheOnCanvas.call(this, ctx);\n },\n\n /**\n * Decide if the object should cache or not. Create its own cache level\n * needsItsOwnCache should be used when the object drawing method requires\n * a cache step. None of the fabric classes requires it.\n * Generally you do not cache objects in groups because the group outside is cached.\n * This is the special image version where we would like to avoid caching where possible.\n * Essentially images do not benefit from caching. They may require caching, and in that\n * case we do it. Also caching an image usually ends in a loss of details.\n * A full performance audit should be done.\n * @return {Boolean}\n */\n shouldCache: function () {\n return this.needsItsOwnCache();\n },\n\n _renderFill: function (ctx) {\n var elementToDraw = this._element;\n if (!elementToDraw) {\n return;\n }\n var scaleX = this._filterScalingX,\n scaleY = this._filterScalingY,\n w = this.width,\n h = this.height,\n min = Math.min,\n max = Math.max,\n // crop values cannot be lesser than 0.\n cropX = max(this.cropX, 0),\n cropY = max(this.cropY, 0),\n elWidth = elementToDraw.naturalWidth || elementToDraw.width,\n elHeight = elementToDraw.naturalHeight || elementToDraw.height,\n sX = cropX * scaleX,\n sY = cropY * scaleY,\n // the width height cannot exceed element width/height, starting from the crop offset.\n sW = min(w * scaleX, elWidth - sX),\n sH = min(h * scaleY, elHeight - sY),\n x = -w / 2,\n y = -h / 2,\n maxDestW = min(w, elWidth / scaleX - cropX),\n maxDestH = min(h, elHeight / scaleY - cropY);\n\n elementToDraw &&\n ctx.drawImage(\n elementToDraw,\n sX,\n sY,\n sW,\n sH,\n x,\n y,\n maxDestW,\n maxDestH\n );\n },\n\n /**\n * needed to check if image needs resize\n * @private\n */\n _needsResize: function () {\n var scale = this.getTotalObjectScaling();\n return scale.x !== this._lastScaleX || scale.y !== this._lastScaleY;\n },\n\n /**\n * @private\n */\n _resetWidthHeight: function () {\n this.set(this.getOriginalSize());\n },\n\n /**\n * The Image class's initialization method. This method is automatically\n * called by the constructor.\n * @private\n * @param {HTMLImageElement|String} element The element representing the image\n * @param {Object} [options] Options object\n */\n _initElement: function (element, options) {\n this.setElement(\n fabric.document.getElementById(element) || element,\n options\n );\n },\n\n /**\n * @private\n * @param {Object} [options] Options object\n */\n _initConfig: function (options) {\n options || (options = {});\n this.setOptions(options);\n this._setWidthHeight(options);\n },\n\n /**\n * @private\n * Set the width and the height of the image object, using the element or the\n * options.\n * @param {Object} [options] Object with width/height properties\n */\n _setWidthHeight: function (options) {\n options || (options = {});\n var el = this.getElement();\n this.width = options.width || el.naturalWidth || el.width || 0;\n this.height = options.height || el.naturalHeight || el.height || 0;\n },\n\n /**\n * Calculate offset for center and scale factor for the image in order to respect\n * the preserveAspectRatio attribute\n * @private\n * @return {Object}\n */\n parsePreserveAspectRatioAttribute: function () {\n var pAR = fabric.util.parsePreserveAspectRatioAttribute(\n this.preserveAspectRatio || ''\n ),\n rWidth = this._element.width,\n rHeight = this._element.height,\n scaleX = 1,\n scaleY = 1,\n offsetLeft = 0,\n offsetTop = 0,\n cropX = 0,\n cropY = 0,\n offset,\n pWidth = this.width,\n pHeight = this.height,\n parsedAttributes = { width: pWidth, height: pHeight };\n if (pAR && (pAR.alignX !== 'none' || pAR.alignY !== 'none')) {\n if (pAR.meetOrSlice === 'meet') {\n scaleX = scaleY = fabric.util.findScaleToFit(\n this._element,\n parsedAttributes\n );\n offset = (pWidth - rWidth * scaleX) / 2;\n if (pAR.alignX === 'Min') {\n offsetLeft = -offset;\n }\n if (pAR.alignX === 'Max') {\n offsetLeft = offset;\n }\n offset = (pHeight - rHeight * scaleY) / 2;\n if (pAR.alignY === 'Min') {\n offsetTop = -offset;\n }\n if (pAR.alignY === 'Max') {\n offsetTop = offset;\n }\n }\n if (pAR.meetOrSlice === 'slice') {\n scaleX = scaleY = fabric.util.findScaleToCover(\n this._element,\n parsedAttributes\n );\n offset = rWidth - pWidth / scaleX;\n if (pAR.alignX === 'Mid') {\n cropX = offset / 2;\n }\n if (pAR.alignX === 'Max') {\n cropX = offset;\n }\n offset = rHeight - pHeight / scaleY;\n if (pAR.alignY === 'Mid') {\n cropY = offset / 2;\n }\n if (pAR.alignY === 'Max') {\n cropY = offset;\n }\n rWidth = pWidth / scaleX;\n rHeight = pHeight / scaleY;\n }\n } else {\n scaleX = pWidth / rWidth;\n scaleY = pHeight / rHeight;\n }\n return {\n width: rWidth,\n height: rHeight,\n scaleX: scaleX,\n scaleY: scaleY,\n offsetLeft: offsetLeft,\n offsetTop: offsetTop,\n cropX: cropX,\n cropY: cropY,\n };\n },\n }\n );\n\n /**\n * Default CSS class name for canvas\n * @static\n * @type String\n * @default\n */\n fabric.Image.CSS_CANVAS = 'canvas-img';\n\n /**\n * Alias for getSrc\n * @static\n */\n fabric.Image.prototype.getSvgSrc = fabric.Image.prototype.getSrc;\n\n /**\n * Creates an instance of fabric.Image from its object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @param {object} [options] Options object\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Image.fromObject = function (object, options) {\n var _object = Object.assign({}, object),\n filters = _object.filters,\n resizeFilter = _object.resizeFilter;\n // the generic enliving will fail on filters for now\n delete _object.resizeFilter;\n delete _object.filters;\n var imageOptions = Object.assign({}, options, {\n crossOrigin: _object.crossOrigin,\n }),\n filterOptions = Object.assign({}, options, {\n namespace: fabric.Image.filters,\n });\n return Promise.all([\n fabric.util.loadImage(_object.src, imageOptions),\n filters && fabric.util.enlivenObjects(filters, filterOptions),\n resizeFilter && fabric.util.enlivenObjects([resizeFilter], filterOptions),\n fabric.util.enlivenObjectEnlivables(_object, options),\n ]).then(function (imgAndFilters) {\n _object.filters = imgAndFilters[1] || [];\n _object.resizeFilter = imgAndFilters[2] && imgAndFilters[2][0];\n return new fabric.Image(\n imgAndFilters[0],\n Object.assign(_object, imgAndFilters[3])\n );\n });\n };\n\n /**\n * Creates an instance of fabric.Image from an URL string\n * @static\n * @param {String} url URL to create an image from\n * @param {object} [options] Options object\n * @param {string} [options.crossOrigin] cors value for the image loading, default to anonymous\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Image.fromURL = function (url, options) {\n return fabric.util.loadImage(url, options || {}).then(function (img) {\n return new fabric.Image(img, options);\n });\n };\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Image.fromElement})\n * @static\n * @see {@link http://www.w3.org/TR/SVG/struct.html#ImageElement}\n */\n fabric.Image.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'x y width height preserveAspectRatio xlink:href crossOrigin image-rendering'.split(\n ' '\n )\n );\n\n /**\n * Returns {@link fabric.Image} instance from an SVG element\n * @static\n * @param {SVGElement} element Element to parse\n * @param {Object} [options] Options object\n * @param {AbortSignal} [options.signal] handle aborting, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @param {Function} callback Callback to execute when fabric.Image object is created\n * @return {fabric.Image} Instance of fabric.Image\n */\n fabric.Image.fromElement = function (element, callback, options) {\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Image.ATTRIBUTE_NAMES\n );\n fabric.Image.fromURL(\n parsedAttributes['xlink:href'],\n Object.assign({}, options || {}, parsedAttributes)\n ).then(function (fabricImage) {\n callback(fabricImage);\n });\n };\n /* _FROM_SVG_END_ */\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.Object.prototype,\n /** @lends fabric.Object.prototype */ {\n /**\n * @private\n * @return {Number} angle value\n */\n _getAngleValueForStraighten: function () {\n var angle = this.angle % 360;\n if (angle > 0) {\n return Math.round((angle - 1) / 90) * 90;\n }\n return Math.round(angle / 90) * 90;\n },\n\n /**\n * Straightens an object (rotating it from current angle to one of 0, 90, 180, 270, etc. depending on which is closer)\n * @return {fabric.Object} thisArg\n * @chainable\n */\n straighten: function () {\n return this.rotate(this._getAngleValueForStraighten());\n },\n\n /**\n * Same as {@link fabric.Object.prototype.straighten} but with animation\n * @param {Object} callbacks Object with callback functions\n * @param {Function} [callbacks.onComplete] Invoked on completion\n * @param {Function} [callbacks.onChange] Invoked on every step of animation\n * @return {fabric.Object} thisArg\n */\n fxStraighten: function (callbacks) {\n callbacks = callbacks || {};\n\n var empty = function () {},\n onComplete = callbacks.onComplete || empty,\n onChange = callbacks.onChange || empty,\n _this = this;\n\n return fabric.util.animate({\n target: this,\n startValue: this.get('angle'),\n endValue: this._getAngleValueForStraighten(),\n duration: this.FX_DURATION,\n onChange: function (value) {\n _this.rotate(value);\n onChange();\n },\n onComplete: function () {\n _this.setCoords();\n onComplete();\n },\n });\n },\n }\n );\n\n fabric.util.object.extend(\n fabric.StaticCanvas.prototype,\n /** @lends fabric.StaticCanvas.prototype */ {\n /**\n * Straightens object, then rerenders canvas\n * @param {fabric.Object} object Object to straighten\n * @return {fabric.Canvas} thisArg\n * @chainable\n */\n straightenObject: function (object) {\n object.straighten();\n this.requestRenderAll();\n return this;\n },\n\n /**\n * Same as {@link fabric.Canvas.prototype.straightenObject}, but animated\n * @param {fabric.Object} object Object to straighten\n * @return {fabric.Canvas} thisArg\n */\n fxStraightenObject: function (object) {\n return object.fxStraighten({\n onChange: this.requestRenderAllBound,\n });\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { fabric } from '../../HEADER';\nimport { createCanvasElement } from '../util/misc/dom';\n\nexport const enum TWebGLPrecision {\n low = 'lowp',\n medium = 'mediump',\n high = 'highp',\n}\n\n/**\n * @todo remove once rollup supports transforming enums...\n * https://github.com/rollup/plugins/issues/463\n */\nconst WebGLPrecision = [\n TWebGLPrecision.low,\n TWebGLPrecision.medium,\n TWebGLPrecision.high,\n];\n\n/**\n * Lazy initialize WebGL contants\n */\nclass WebGLProbe {\n private initialized = false;\n\n private _maxTextureSize?: number;\n\n private _webGLPrecision?: TWebGLPrecision;\n\n get maxTextureSize() {\n this.queryWebGL();\n return this._maxTextureSize;\n }\n\n get webGLPrecision() {\n this.queryWebGL();\n return this._webGLPrecision;\n }\n\n /**\n * Tests if webgl supports certain precision\n * @param {WebGL} Canvas WebGL context to test on\n * @param {TWebGLPrecision} Precision to test can be any of following\n * @returns {Boolean} Whether the user's browser WebGL supports given precision.\n */\n private testPrecision(gl: WebGLRenderingContext, precision: TWebGLPrecision) {\n const fragmentSource = `precision ${precision} float;\\nvoid main(){}`;\n const fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);\n gl.shaderSource(fragmentShader, fragmentSource);\n gl.compileShader(fragmentShader);\n return !!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS);\n }\n\n /**\n * query browser for WebGL\n * @returns config object if true\n */\n private queryWebGL() {\n if (this.initialized || fabric.isLikelyNode) {\n return;\n }\n const canvas = createCanvasElement();\n const gl =\n canvas.getContext('webgl') || canvas.getContext('experimental-webgl');\n if (gl) {\n this._maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE);\n this._webGLPrecision = WebGLPrecision.find((key) =>\n this.testPrecision(gl, key)\n );\n console.log(`fabric: max texture size ${this._maxTextureSize}`);\n }\n this.initialized = true;\n }\n\n isSupported(textureSize: number) {\n return this.maxTextureSize && this.maxTextureSize >= textureSize;\n }\n}\n\nexport const webGLProbe = new WebGLProbe();\n","//@ts-nocheck\n\nimport { config } from '../config';\nimport { webGLProbe } from './WebGLProbe';\n\n(function (global) {\n var fabric = global.fabric;\n\n fabric.initFilterBackend = function () {\n if (\n config.enableGLFiltering &&\n webGLProbe.isSupported(config.textureSize)\n ) {\n return new fabric.WebglFilterBackend({ tileSize: config.textureSize });\n } else if (fabric.Canvas2dFilterBackend) {\n return new fabric.Canvas2dFilterBackend();\n }\n };\n\n fabric.WebglFilterBackend = WebglFilterBackend;\n\n /**\n * WebGL filter backend.\n */\n function WebglFilterBackend(options) {\n if (options && options.tileSize) {\n this.tileSize = options.tileSize;\n }\n this.setupGLContext(this.tileSize, this.tileSize);\n this.captureGPUInfo();\n }\n\n WebglFilterBackend.prototype =\n /** @lends fabric.WebglFilterBackend.prototype */ {\n tileSize: config.textureSize,\n\n /**\n * Experimental. This object is a sort of repository of help layers used to avoid\n * of recreating them during frequent filtering. If you are previewing a filter with\n * a slider you probably do not want to create help layers every filter step.\n * in this object there will be appended some canvases, created once, resized sometimes\n * cleared never. Clearing is left to the developer.\n **/\n resources: {},\n\n /**\n * Setup a WebGL context suitable for filtering, and bind any needed event handlers.\n */\n setupGLContext: function (width, height) {\n this.dispose();\n this.createWebGLCanvas(width, height);\n // eslint-disable-next-line\n this.aPosition = new Float32Array([0, 0, 0, 1, 1, 0, 1, 1]);\n this.chooseFastestCopyGLTo2DMethod(width, height);\n },\n\n /**\n * Pick a method to copy data from GL context to 2d canvas. In some browsers using\n * putImageData is faster than drawImage for that specific operation.\n */\n chooseFastestCopyGLTo2DMethod: function (width, height) {\n var canMeasurePerf = typeof window.performance !== 'undefined',\n canUseImageData;\n try {\n new ImageData(1, 1);\n canUseImageData = true;\n } catch (e) {\n canUseImageData = false;\n }\n // eslint-disable-next-line no-undef\n var canUseArrayBuffer = typeof ArrayBuffer !== 'undefined';\n // eslint-disable-next-line no-undef\n var canUseUint8Clamped = typeof Uint8ClampedArray !== 'undefined';\n\n if (\n !(\n canMeasurePerf &&\n canUseImageData &&\n canUseArrayBuffer &&\n canUseUint8Clamped\n )\n ) {\n return;\n }\n\n var targetCanvas = fabric.util.createCanvasElement();\n // eslint-disable-next-line no-undef\n var imageBuffer = new ArrayBuffer(width * height * 4);\n if (config.forceGLPutImageData) {\n this.imageBuffer = imageBuffer;\n this.copyGLTo2D = copyGLTo2DPutImageData;\n return;\n }\n var testContext = {\n imageBuffer: imageBuffer,\n destinationWidth: width,\n destinationHeight: height,\n targetCanvas: targetCanvas,\n };\n var startTime, drawImageTime, putImageDataTime;\n targetCanvas.width = width;\n targetCanvas.height = height;\n\n startTime = window.performance.now();\n copyGLTo2DDrawImage.call(testContext, this.gl, testContext);\n drawImageTime = window.performance.now() - startTime;\n\n startTime = window.performance.now();\n copyGLTo2DPutImageData.call(testContext, this.gl, testContext);\n putImageDataTime = window.performance.now() - startTime;\n\n if (drawImageTime > putImageDataTime) {\n this.imageBuffer = imageBuffer;\n this.copyGLTo2D = copyGLTo2DPutImageData;\n } else {\n this.copyGLTo2D = copyGLTo2DDrawImage;\n }\n },\n\n /**\n * Create a canvas element and associated WebGL context and attaches them as\n * class properties to the GLFilterBackend class.\n */\n createWebGLCanvas: function (width, height) {\n var canvas = fabric.util.createCanvasElement();\n canvas.width = width;\n canvas.height = height;\n var glOptions = {\n alpha: true,\n premultipliedAlpha: false,\n depth: false,\n stencil: false,\n antialias: false,\n },\n gl = canvas.getContext('webgl', glOptions);\n if (!gl) {\n gl = canvas.getContext('experimental-webgl', glOptions);\n }\n if (!gl) {\n return;\n }\n gl.clearColor(0, 0, 0, 0);\n // this canvas can fire webglcontextlost and webglcontextrestored\n this.canvas = canvas;\n this.gl = gl;\n },\n\n /**\n * Attempts to apply the requested filters to the source provided, drawing the filtered output\n * to the provided target canvas.\n *\n * @param {Array} filters The filters to apply.\n * @param {HTMLImageElement|HTMLCanvasElement} source The source to be filtered.\n * @param {Number} width The width of the source input.\n * @param {Number} height The height of the source input.\n * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn.\n * @param {String|undefined} cacheKey A key used to cache resources related to the source. If\n * omitted, caching will be skipped.\n */\n applyFilters: function (\n filters,\n source,\n width,\n height,\n targetCanvas,\n cacheKey\n ) {\n var gl = this.gl;\n var cachedTexture;\n if (cacheKey) {\n cachedTexture = this.getCachedTexture(cacheKey, source);\n }\n var pipelineState = {\n originalWidth: source.width || source.originalWidth,\n originalHeight: source.height || source.originalHeight,\n sourceWidth: width,\n sourceHeight: height,\n destinationWidth: width,\n destinationHeight: height,\n context: gl,\n sourceTexture: this.createTexture(\n gl,\n width,\n height,\n !cachedTexture && source\n ),\n targetTexture: this.createTexture(gl, width, height),\n originalTexture:\n cachedTexture ||\n this.createTexture(gl, width, height, !cachedTexture && source),\n passes: filters.length,\n webgl: true,\n aPosition: this.aPosition,\n programCache: this.programCache,\n pass: 0,\n filterBackend: this,\n targetCanvas: targetCanvas,\n };\n var tempFbo = gl.createFramebuffer();\n gl.bindFramebuffer(gl.FRAMEBUFFER, tempFbo);\n filters.forEach(function (filter) {\n filter && filter.applyTo(pipelineState);\n });\n resizeCanvasIfNeeded(pipelineState);\n this.copyGLTo2D(gl, pipelineState);\n gl.bindTexture(gl.TEXTURE_2D, null);\n gl.deleteTexture(pipelineState.sourceTexture);\n gl.deleteTexture(pipelineState.targetTexture);\n gl.deleteFramebuffer(tempFbo);\n targetCanvas.getContext('2d').setTransform(1, 0, 0, 1, 0, 0);\n return pipelineState;\n },\n\n /**\n * Detach event listeners, remove references, and clean up caches.\n */\n dispose: function () {\n if (this.canvas) {\n this.canvas = null;\n this.gl = null;\n }\n this.clearWebGLCaches();\n },\n\n /**\n * Wipe out WebGL-related caches.\n */\n clearWebGLCaches: function () {\n this.programCache = {};\n this.textureCache = {};\n },\n\n /**\n * Create a WebGL texture object.\n *\n * Accepts specific dimensions to initialize the texture to or a source image.\n *\n * @param {WebGLRenderingContext} gl The GL context to use for creating the texture.\n * @param {Number} width The width to initialize the texture at.\n * @param {Number} height The height to initialize the texture.\n * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source for the texture data.\n * @returns {WebGLTexture}\n */\n createTexture: function (gl, width, height, textureImageSource) {\n var texture = gl.createTexture();\n gl.bindTexture(gl.TEXTURE_2D, texture);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);\n if (textureImageSource) {\n gl.texImage2D(\n gl.TEXTURE_2D,\n 0,\n gl.RGBA,\n gl.RGBA,\n gl.UNSIGNED_BYTE,\n textureImageSource\n );\n } else {\n gl.texImage2D(\n gl.TEXTURE_2D,\n 0,\n gl.RGBA,\n width,\n height,\n 0,\n gl.RGBA,\n gl.UNSIGNED_BYTE,\n null\n );\n }\n return texture;\n },\n\n /**\n * Can be optionally used to get a texture from the cache array\n *\n * If an existing texture is not found, a new texture is created and cached.\n *\n * @param {String} uniqueId A cache key to use to find an existing texture.\n * @param {HTMLImageElement|HTMLCanvasElement} textureImageSource A source to use to create the\n * texture cache entry if one does not already exist.\n */\n getCachedTexture: function (uniqueId, textureImageSource) {\n if (this.textureCache[uniqueId]) {\n return this.textureCache[uniqueId];\n } else {\n var texture = this.createTexture(\n this.gl,\n textureImageSource.width,\n textureImageSource.height,\n textureImageSource\n );\n this.textureCache[uniqueId] = texture;\n return texture;\n }\n },\n\n /**\n * Clear out cached resources related to a source image that has been\n * filtered previously.\n *\n * @param {String} cacheKey The cache key provided when the source image was filtered.\n */\n evictCachesForKey: function (cacheKey) {\n if (this.textureCache[cacheKey]) {\n this.gl.deleteTexture(this.textureCache[cacheKey]);\n delete this.textureCache[cacheKey];\n }\n },\n\n copyGLTo2D: copyGLTo2DDrawImage,\n\n /**\n * Attempt to extract GPU information strings from a WebGL context.\n *\n * Useful information when debugging or blacklisting specific GPUs.\n *\n * @returns {Object} A GPU info object with renderer and vendor strings.\n */\n captureGPUInfo: function () {\n if (this.gpuInfo) {\n return this.gpuInfo;\n }\n var gl = this.gl,\n gpuInfo = { renderer: '', vendor: '' };\n if (!gl) {\n return gpuInfo;\n }\n var ext = gl.getExtension('WEBGL_debug_renderer_info');\n if (ext) {\n var renderer = gl.getParameter(ext.UNMASKED_RENDERER_WEBGL);\n var vendor = gl.getParameter(ext.UNMASKED_VENDOR_WEBGL);\n if (renderer) {\n gpuInfo.renderer = renderer.toLowerCase();\n }\n if (vendor) {\n gpuInfo.vendor = vendor.toLowerCase();\n }\n }\n this.gpuInfo = gpuInfo;\n return gpuInfo;\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n\nfunction resizeCanvasIfNeeded(pipelineState) {\n var targetCanvas = pipelineState.targetCanvas,\n width = targetCanvas.width,\n height = targetCanvas.height,\n dWidth = pipelineState.destinationWidth,\n dHeight = pipelineState.destinationHeight;\n\n if (width !== dWidth || height !== dHeight) {\n targetCanvas.width = dWidth;\n targetCanvas.height = dHeight;\n }\n}\n\n/**\n * Copy an input WebGL canvas on to an output 2D canvas.\n *\n * The WebGL canvas is assumed to be upside down, with the top-left pixel of the\n * desired output image appearing in the bottom-left corner of the WebGL canvas.\n *\n * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from.\n * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to.\n * @param {Object} pipelineState The 2D target canvas to copy on to.\n */\nfunction copyGLTo2DDrawImage(gl, pipelineState) {\n var glCanvas = gl.canvas,\n targetCanvas = pipelineState.targetCanvas,\n ctx = targetCanvas.getContext('2d');\n ctx.translate(0, targetCanvas.height); // move it down again\n ctx.scale(1, -1); // vertical flip\n // where is my image on the big glcanvas?\n var sourceY = glCanvas.height - targetCanvas.height;\n ctx.drawImage(\n glCanvas,\n 0,\n sourceY,\n targetCanvas.width,\n targetCanvas.height,\n 0,\n 0,\n targetCanvas.width,\n targetCanvas.height\n );\n}\n\n/**\n * Copy an input WebGL canvas on to an output 2D canvas using 2d canvas' putImageData\n * API. Measurably faster than using ctx.drawImage in Firefox (version 54 on OSX Sierra).\n *\n * @param {WebGLRenderingContext} sourceContext The WebGL context to copy from.\n * @param {HTMLCanvasElement} targetCanvas The 2D target canvas to copy on to.\n * @param {Object} pipelineState The 2D target canvas to copy on to.\n */\nfunction copyGLTo2DPutImageData(gl, pipelineState) {\n var targetCanvas = pipelineState.targetCanvas,\n ctx = targetCanvas.getContext('2d'),\n dWidth = pipelineState.destinationWidth,\n dHeight = pipelineState.destinationHeight,\n numBytes = dWidth * dHeight * 4;\n\n // eslint-disable-next-line no-undef\n var u8 = new Uint8Array(this.imageBuffer, 0, numBytes);\n // eslint-disable-next-line no-undef\n var u8Clamped = new Uint8ClampedArray(this.imageBuffer, 0, numBytes);\n\n gl.readPixels(0, 0, dWidth, dHeight, gl.RGBA, gl.UNSIGNED_BYTE, u8);\n var imgData = new ImageData(u8Clamped, dWidth, dHeight);\n ctx.putImageData(imgData, 0, 0);\n}\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n noop = function () {};\n\n fabric.Canvas2dFilterBackend = Canvas2dFilterBackend;\n\n /**\n * Canvas 2D filter backend.\n */\n function Canvas2dFilterBackend() {}\n\n Canvas2dFilterBackend.prototype =\n /** @lends fabric.Canvas2dFilterBackend.prototype */ {\n evictCachesForKey: noop,\n dispose: noop,\n clearWebGLCaches: noop,\n\n /**\n * Experimental. This object is a sort of repository of help layers used to avoid\n * of recreating them during frequent filtering. If you are previewing a filter with\n * a slider you probably do not want to create help layers every filter step.\n * in this object there will be appended some canvases, created once, resized sometimes\n * cleared never. Clearing is left to the developer.\n **/\n resources: {},\n\n /**\n * Apply a set of filters against a source image and draw the filtered output\n * to the provided destination canvas.\n *\n * @param {EnhancedFilter} filters The filter to apply.\n * @param {HTMLImageElement|HTMLCanvasElement} sourceElement The source to be filtered.\n * @param {Number} sourceWidth The width of the source input.\n * @param {Number} sourceHeight The height of the source input.\n * @param {HTMLCanvasElement} targetCanvas The destination for filtered output to be drawn.\n */\n applyFilters: function (\n filters,\n sourceElement,\n sourceWidth,\n sourceHeight,\n targetCanvas\n ) {\n var ctx = targetCanvas.getContext('2d');\n ctx.drawImage(sourceElement, 0, 0, sourceWidth, sourceHeight);\n var imageData = ctx.getImageData(0, 0, sourceWidth, sourceHeight);\n var originalImageData = ctx.getImageData(\n 0,\n 0,\n sourceWidth,\n sourceHeight\n );\n var pipelineState = {\n sourceWidth: sourceWidth,\n sourceHeight: sourceHeight,\n imageData: imageData,\n originalEl: sourceElement,\n originalImageData: originalImageData,\n canvasEl: targetCanvas,\n ctx: ctx,\n filterBackend: this,\n };\n filters.forEach(function (filter) {\n filter.applyTo(pipelineState);\n });\n if (\n pipelineState.imageData.width !== sourceWidth ||\n pipelineState.imageData.height !== sourceHeight\n ) {\n targetCanvas.width = pipelineState.imageData.width;\n targetCanvas.height = pipelineState.imageData.height;\n }\n ctx.putImageData(pipelineState.imageData, 0, 0);\n return pipelineState;\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { TWebGLPrecision, webGLProbe } from './WebGLProbe';\n\n(function (global) {\n var fabric = global.fabric;\n /**\n * @namespace fabric.Image.filters\n * @memberOf fabric.Image\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#image_filters}\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n */\n fabric.Image.filters = fabric.Image.filters || {};\n\n /**\n * Root filter class from which all filter classes inherit from\n * @class fabric.Image.filters.BaseFilter\n * @memberOf fabric.Image.filters\n */\n fabric.Image.filters.BaseFilter = fabric.util.createClass(\n /** @lends fabric.Image.filters.BaseFilter.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'BaseFilter',\n\n /**\n * Array of attributes to send with buffers. do not modify\n * @private\n */\n\n vertexSource:\n 'attribute vec2 aPosition;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vTexCoord = aPosition;\\n' +\n 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\\n' +\n '}',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'void main() {\\n' +\n 'gl_FragColor = texture2D(uTexture, vTexCoord);\\n' +\n '}',\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n if (options) {\n this.setOptions(options);\n }\n },\n\n /**\n * Sets filter's properties from options\n * @param {Object} [options] Options object\n */\n setOptions: function (options) {\n for (var prop in options) {\n this[prop] = options[prop];\n }\n },\n\n /**\n * Compile this filter's shader program.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context to use for shader compilation.\n * @param {String} fragmentSource fragmentShader source for compilation\n * @param {String} vertexSource vertexShader source for compilation\n */\n createProgram: function (gl, fragmentSource, vertexSource) {\n fragmentSource = fragmentSource || this.fragmentSource;\n vertexSource = vertexSource || this.vertexSource;\n if (webGLProbe.webGLPrecision !== TWebGLPrecision.high) {\n fragmentSource = fragmentSource.replace(\n new RegExp(`precision ${TWebGLPrecision.high} float`, 'g'),\n `precision ${webGLProbe.webGLPrecision} float`\n );\n }\n var vertexShader = gl.createShader(gl.VERTEX_SHADER);\n gl.shaderSource(vertexShader, vertexSource);\n gl.compileShader(vertexShader);\n if (!gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS)) {\n throw new Error(\n // eslint-disable-next-line prefer-template\n 'Vertex shader compile error for ' +\n this.type +\n ': ' +\n gl.getShaderInfoLog(vertexShader)\n );\n }\n\n var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);\n gl.shaderSource(fragmentShader, fragmentSource);\n gl.compileShader(fragmentShader);\n if (!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS)) {\n throw new Error(\n // eslint-disable-next-line prefer-template\n 'Fragment shader compile error for ' +\n this.type +\n ': ' +\n gl.getShaderInfoLog(fragmentShader)\n );\n }\n\n var program = gl.createProgram();\n gl.attachShader(program, vertexShader);\n gl.attachShader(program, fragmentShader);\n gl.linkProgram(program);\n if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {\n throw new Error(\n // eslint-disable-next-line prefer-template\n 'Shader link error for \"${this.type}\" ' +\n gl.getProgramInfoLog(program)\n );\n }\n\n var attributeLocations = this.getAttributeLocations(gl, program);\n var uniformLocations = this.getUniformLocations(gl, program) || {};\n uniformLocations.uStepW = gl.getUniformLocation(program, 'uStepW');\n uniformLocations.uStepH = gl.getUniformLocation(program, 'uStepH');\n return {\n program: program,\n attributeLocations: attributeLocations,\n uniformLocations: uniformLocations,\n };\n },\n\n /**\n * Return a map of attribute names to WebGLAttributeLocation objects.\n *\n * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program.\n * @param {WebGLShaderProgram} program The shader program from which to take attribute locations.\n * @returns {Object} A map of attribute names to attribute locations.\n */\n getAttributeLocations: function (gl, program) {\n return {\n aPosition: gl.getAttribLocation(program, 'aPosition'),\n };\n },\n\n /**\n * Return a map of uniform names to WebGLUniformLocation objects.\n *\n * Intended to be overridden by subclasses.\n *\n * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program.\n * @param {WebGLShaderProgram} program The shader program from which to take uniform locations.\n * @returns {Object} A map of uniform names to uniform locations.\n */\n getUniformLocations: function (/* gl, program */) {\n // in case i do not need any special uniform i need to return an empty object\n return {};\n },\n\n /**\n * Send attribute data from this filter to its shader program on the GPU.\n *\n * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program.\n * @param {Object} attributeLocations A map of shader attribute names to their locations.\n */\n sendAttributeData: function (gl, attributeLocations, aPositionData) {\n var attributeLocation = attributeLocations.aPosition;\n var buffer = gl.createBuffer();\n gl.bindBuffer(gl.ARRAY_BUFFER, buffer);\n gl.enableVertexAttribArray(attributeLocation);\n gl.vertexAttribPointer(attributeLocation, 2, gl.FLOAT, false, 0, 0);\n gl.bufferData(gl.ARRAY_BUFFER, aPositionData, gl.STATIC_DRAW);\n },\n\n _setupFrameBuffer: function (options) {\n var gl = options.context,\n width,\n height;\n if (options.passes > 1) {\n width = options.destinationWidth;\n height = options.destinationHeight;\n if (\n options.sourceWidth !== width ||\n options.sourceHeight !== height\n ) {\n gl.deleteTexture(options.targetTexture);\n options.targetTexture = options.filterBackend.createTexture(\n gl,\n width,\n height\n );\n }\n gl.framebufferTexture2D(\n gl.FRAMEBUFFER,\n gl.COLOR_ATTACHMENT0,\n gl.TEXTURE_2D,\n options.targetTexture,\n 0\n );\n } else {\n // draw last filter on canvas and not to framebuffer.\n gl.bindFramebuffer(gl.FRAMEBUFFER, null);\n gl.finish();\n }\n },\n\n _swapTextures: function (options) {\n options.passes--;\n options.pass++;\n var temp = options.targetTexture;\n options.targetTexture = options.sourceTexture;\n options.sourceTexture = temp;\n },\n\n /**\n * Generic isNeutral implementation for one parameter based filters.\n * Used only in image applyFilters to discard filters that will not have an effect\n * on the image\n * Other filters may need their own version ( ColorMatrix, HueRotation, gamma, ComposedFilter )\n * @param {Object} options\n **/\n isNeutralState: function (/* options */) {\n var main = this.mainParameter,\n _class = fabric.Image.filters[this.type].prototype;\n if (main) {\n if (Array.isArray(_class[main])) {\n for (var i = _class[main].length; i--; ) {\n if (this[main][i] !== _class[main][i]) {\n return false;\n }\n }\n return true;\n } else {\n return _class[main] === this[main];\n }\n } else {\n return false;\n }\n },\n\n /**\n * Apply this filter to the input image data provided.\n *\n * Determines whether to use WebGL or Canvas2D based on the options.webgl flag.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be executed\n * @param {Boolean} options.webgl Whether to use webgl to render the filter.\n * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered.\n * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn.\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n applyTo: function (options) {\n if (options.webgl) {\n this._setupFrameBuffer(options);\n this.applyToWebGL(options);\n this._swapTextures(options);\n } else {\n this.applyTo2d(options);\n }\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n if (!options.programCache.hasOwnProperty(this.type)) {\n options.programCache[this.type] = this.createProgram(options.context);\n }\n return options.programCache[this.type];\n },\n\n /**\n * Apply this filter using webgl.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be executed\n * @param {Boolean} options.webgl Whether to use webgl to render the filter.\n * @param {WebGLTexture} options.originalTexture The texture of the original input image.\n * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered.\n * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn.\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n applyToWebGL: function (options) {\n var gl = options.context;\n var shader = this.retrieveShader(options);\n if (options.pass === 0 && options.originalTexture) {\n gl.bindTexture(gl.TEXTURE_2D, options.originalTexture);\n } else {\n gl.bindTexture(gl.TEXTURE_2D, options.sourceTexture);\n }\n gl.useProgram(shader.program);\n this.sendAttributeData(\n gl,\n shader.attributeLocations,\n options.aPosition\n );\n\n gl.uniform1f(shader.uniformLocations.uStepW, 1 / options.sourceWidth);\n gl.uniform1f(shader.uniformLocations.uStepH, 1 / options.sourceHeight);\n\n this.sendUniformData(gl, shader.uniformLocations);\n gl.viewport(0, 0, options.destinationWidth, options.destinationHeight);\n gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);\n },\n\n bindAdditionalTexture: function (gl, texture, textureUnit) {\n gl.activeTexture(textureUnit);\n gl.bindTexture(gl.TEXTURE_2D, texture);\n // reset active texture to 0 as usual\n gl.activeTexture(gl.TEXTURE0);\n },\n\n unbindAdditionalTexture: function (gl, textureUnit) {\n gl.activeTexture(textureUnit);\n gl.bindTexture(gl.TEXTURE_2D, null);\n gl.activeTexture(gl.TEXTURE0);\n },\n\n getMainParameter: function () {\n return this[this.mainParameter];\n },\n\n setMainParameter: function (value) {\n this[this.mainParameter] = value;\n },\n\n /**\n * Send uniform data from this filter to its shader program on the GPU.\n *\n * Intended to be overridden by subclasses.\n *\n * @param {WebGLRenderingContext} gl The canvas context used to compile the shader program.\n * @param {Object} uniformLocations A map of shader uniform names to their locations.\n */\n sendUniformData: function (/* gl, uniformLocations */) {\n // Intentionally left blank. Override me in subclasses.\n },\n\n /**\n * If needed by a 2d filter, this functions can create an helper canvas to be used\n * remember that options.targetCanvas is available for use till end of chain.\n */\n createHelpLayer: function (options) {\n if (!options.helpLayer) {\n var helpLayer = document.createElement('canvas');\n helpLayer.width = options.sourceWidth;\n helpLayer.height = options.sourceHeight;\n options.helpLayer = helpLayer;\n }\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n var object = { type: this.type },\n mainP = this.mainParameter;\n if (mainP) {\n object[mainP] = this[mainP];\n }\n return object;\n },\n\n /**\n * Returns a JSON representation of an instance\n * @return {Object} JSON\n */\n toJSON: function () {\n // delegate, not alias\n return this.toObject();\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.BaseFilter.fromObject = function (object) {\n return Promise.resolve(new fabric.Image.filters[object.type](object));\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Color Matrix filter class\n * @class fabric.Image.filters.ColorMatrix\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.ColorMatrix#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @see {@Link http://www.webwasp.co.uk/tutorials/219/Color_Matrix_Filter.php}\n * @see {@Link http://phoboslab.org/log/2013/11/fast-image-filters-with-webgl}\n * @example Kodachrome filter\n * var filter = new fabric.Image.filters.ColorMatrix({\n * matrix: [\n 1.1285582396593525, -0.3967382283601348, -0.03992559172921793, 0, 63.72958762196502,\n -0.16404339962244616, 1.0835251566291304, -0.05498805115633132, 0, 24.732407896706203,\n -0.16786010706155763, -0.5603416277695248, 1.6014850761964943, 0, 35.62982807460946,\n 0, 0, 0, 1, 0\n ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.ColorMatrix = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.ColorMatrix.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'ColorMatrix',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'uniform mat4 uColorMatrix;\\n' +\n 'uniform vec4 uConstants;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'color *= uColorMatrix;\\n' +\n 'color += uConstants;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Colormatrix for pixels.\n * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning\n * outside the -1, 1 range.\n * 0.0039215686 is the part of 1 that get translated to 1 in 2d\n * @param {Array} matrix array of 20 numbers.\n * @default\n */\n matrix: [1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0],\n\n mainParameter: 'matrix',\n\n /**\n * Lock the colormatrix on the color part, skipping alpha, mainly for non webgl scenario\n * to save some calculation\n * @type Boolean\n * @default true\n */\n colorsOnly: true,\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n this.callSuper('initialize', options);\n // create a new array instead mutating the prototype with push\n this.matrix = this.matrix.slice(0);\n },\n\n /**\n * Apply the ColorMatrix operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n iLen = data.length,\n m = this.matrix,\n r,\n g,\n b,\n a,\n i,\n colorsOnly = this.colorsOnly;\n\n for (i = 0; i < iLen; i += 4) {\n r = data[i];\n g = data[i + 1];\n b = data[i + 2];\n if (colorsOnly) {\n data[i] = r * m[0] + g * m[1] + b * m[2] + m[4] * 255;\n data[i + 1] = r * m[5] + g * m[6] + b * m[7] + m[9] * 255;\n data[i + 2] = r * m[10] + g * m[11] + b * m[12] + m[14] * 255;\n } else {\n a = data[i + 3];\n data[i] = r * m[0] + g * m[1] + b * m[2] + a * m[3] + m[4] * 255;\n data[i + 1] =\n r * m[5] + g * m[6] + b * m[7] + a * m[8] + m[9] * 255;\n data[i + 2] =\n r * m[10] + g * m[11] + b * m[12] + a * m[13] + m[14] * 255;\n data[i + 3] =\n r * m[15] + g * m[16] + b * m[17] + a * m[18] + m[19] * 255;\n }\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uColorMatrix: gl.getUniformLocation(program, 'uColorMatrix'),\n uConstants: gl.getUniformLocation(program, 'uConstants'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var m = this.matrix,\n matrix = [\n m[0],\n m[1],\n m[2],\n m[3],\n m[5],\n m[6],\n m[7],\n m[8],\n m[10],\n m[11],\n m[12],\n m[13],\n m[15],\n m[16],\n m[17],\n m[18],\n ],\n constants = [m[4], m[9], m[14], m[19]];\n gl.uniformMatrix4fv(uniformLocations.uColorMatrix, false, matrix);\n gl.uniform4fv(uniformLocations.uConstants, constants);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.ColorMatrix.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Brightness filter class\n * @class fabric.Image.filters.Brightness\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Brightness#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Brightness({\n * brightness: 0.05\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Brightness = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Brightness.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Brightness',\n\n /**\n * Fragment source for the brightness program\n */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uBrightness;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'color.rgb += uBrightness;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Brightness value, from -1 to 1.\n * translated to -255 to 255 for 2d\n * 0.0039215686 is the part of 1 that get translated to 1 in 2d\n * @param {Number} brightness\n * @default\n */\n brightness: 0,\n\n /**\n * Describe the property that is the filter parameter\n * @param {String} m\n * @default\n */\n mainParameter: 'brightness',\n\n /**\n * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n if (this.brightness === 0) {\n return;\n }\n var imageData = options.imageData,\n data = imageData.data,\n i,\n len = data.length,\n brightness = Math.round(this.brightness * 255);\n for (i = 0; i < len; i += 4) {\n data[i] = data[i] + brightness;\n data[i + 1] = data[i + 1] + brightness;\n data[i + 2] = data[i + 2] + brightness;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uBrightness: gl.getUniformLocation(program, 'uBrightness'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uBrightness, this.brightness);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Brightness.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Adapted from html5rocks article\n * @class fabric.Image.filters.Convolute\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Convolute#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example Sharpen filter\n * var filter = new fabric.Image.filters.Convolute({\n * matrix: [ 0, -1, 0,\n * -1, 5, -1,\n * 0, -1, 0 ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n * @example Blur filter\n * var filter = new fabric.Image.filters.Convolute({\n * matrix: [ 1/9, 1/9, 1/9,\n * 1/9, 1/9, 1/9,\n * 1/9, 1/9, 1/9 ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n * @example Emboss filter\n * var filter = new fabric.Image.filters.Convolute({\n * matrix: [ 1, 1, 1,\n * 1, 0.7, -1,\n * -1, -1, -1 ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n * @example Emboss filter with opaqueness\n * var filter = new fabric.Image.filters.Convolute({\n * opaque: true,\n * matrix: [ 1, 1, 1,\n * 1, 0.7, -1,\n * -1, -1, -1 ]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n filters.Convolute = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Convolute.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Convolute',\n\n /*\n * Opaque value (true/false)\n */\n opaque: false,\n\n /*\n * matrix for the filter, max 9x9\n */\n matrix: [0, 0, 0, 0, 1, 0, 0, 0, 0],\n\n /**\n * Fragment source for the brightness program\n */\n fragmentSource: {\n Convolute_3_1:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[9];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 0);\\n' +\n 'for (float h = 0.0; h < 3.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 3.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 1), uStepH * (h - 1));\\n' +\n 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 3.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n Convolute_3_0:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[9];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 1);\\n' +\n 'for (float h = 0.0; h < 3.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 3.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 1.0), uStepH * (h - 1.0));\\n' +\n 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 3.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'float alpha = texture2D(uTexture, vTexCoord).a;\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.a = alpha;\\n' +\n '}',\n Convolute_5_1:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[25];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 0);\\n' +\n 'for (float h = 0.0; h < 5.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 5.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\\n' +\n 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 5.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n Convolute_5_0:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[25];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 1);\\n' +\n 'for (float h = 0.0; h < 5.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 5.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));\\n' +\n 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 5.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'float alpha = texture2D(uTexture, vTexCoord).a;\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.a = alpha;\\n' +\n '}',\n Convolute_7_1:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[49];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 0);\\n' +\n 'for (float h = 0.0; h < 7.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 7.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\\n' +\n 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 7.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n Convolute_7_0:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[49];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 1);\\n' +\n 'for (float h = 0.0; h < 7.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 7.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));\\n' +\n 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 7.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'float alpha = texture2D(uTexture, vTexCoord).a;\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.a = alpha;\\n' +\n '}',\n Convolute_9_1:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[81];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 0);\\n' +\n 'for (float h = 0.0; h < 9.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 9.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\\n' +\n 'color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 9.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n Convolute_9_0:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uMatrix[81];\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0, 0, 0, 1);\\n' +\n 'for (float h = 0.0; h < 9.0; h+=1.0) {\\n' +\n 'for (float w = 0.0; w < 9.0; w+=1.0) {\\n' +\n 'vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));\\n' +\n 'color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 9.0 + w)];\\n' +\n '}\\n' +\n '}\\n' +\n 'float alpha = texture2D(uTexture, vTexCoord).a;\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.a = alpha;\\n' +\n '}',\n },\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.Convolute.prototype\n * @param {Object} [options] Options object\n * @param {Boolean} [options.opaque=false] Opaque value (true/false)\n * @param {Array} [options.matrix] Filter matrix\n */\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var size = Math.sqrt(this.matrix.length);\n var cacheKey = this.type + '_' + size + '_' + (this.opaque ? 1 : 0);\n var shaderSource = this.fragmentSource[cacheKey];\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n shaderSource\n );\n }\n return options.programCache[cacheKey];\n },\n\n /**\n * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n weights = this.matrix,\n side = Math.round(Math.sqrt(weights.length)),\n halfSide = Math.floor(side / 2),\n sw = imageData.width,\n sh = imageData.height,\n output = options.ctx.createImageData(sw, sh),\n dst = output.data,\n // go through the destination image pixels\n alphaFac = this.opaque ? 1 : 0,\n r,\n g,\n b,\n a,\n dstOff,\n scx,\n scy,\n srcOff,\n wt,\n x,\n y,\n cx,\n cy;\n\n for (y = 0; y < sh; y++) {\n for (x = 0; x < sw; x++) {\n dstOff = (y * sw + x) * 4;\n // calculate the weighed sum of the source image pixels that\n // fall under the convolution matrix\n r = 0;\n g = 0;\n b = 0;\n a = 0;\n\n for (cy = 0; cy < side; cy++) {\n for (cx = 0; cx < side; cx++) {\n scy = y + cy - halfSide;\n scx = x + cx - halfSide;\n\n // eslint-disable-next-line max-depth\n if (scy < 0 || scy >= sh || scx < 0 || scx >= sw) {\n continue;\n }\n\n srcOff = (scy * sw + scx) * 4;\n wt = weights[cy * side + cx];\n\n r += data[srcOff] * wt;\n g += data[srcOff + 1] * wt;\n b += data[srcOff + 2] * wt;\n // eslint-disable-next-line max-depth\n if (!alphaFac) {\n a += data[srcOff + 3] * wt;\n }\n }\n }\n dst[dstOff] = r;\n dst[dstOff + 1] = g;\n dst[dstOff + 2] = b;\n if (!alphaFac) {\n dst[dstOff + 3] = a;\n } else {\n dst[dstOff + 3] = data[dstOff + 3];\n }\n }\n }\n options.imageData = output;\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uMatrix: gl.getUniformLocation(program, 'uMatrix'),\n uOpaque: gl.getUniformLocation(program, 'uOpaque'),\n uHalfSize: gl.getUniformLocation(program, 'uHalfSize'),\n uSize: gl.getUniformLocation(program, 'uSize'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1fv(uniformLocations.uMatrix, this.matrix);\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return extend(this.callSuper('toObject'), {\n opaque: this.opaque,\n matrix: this.matrix,\n });\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Convolute.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Grayscale image filter class\n * @class fabric.Image.filters.Grayscale\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Grayscale();\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Grayscale = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Grayscale.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Grayscale',\n\n fragmentSource: {\n average:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'float average = (color.r + color.b + color.g) / 3.0;\\n' +\n 'gl_FragColor = vec4(average, average, average, color.a);\\n' +\n '}',\n lightness:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform int uMode;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 col = texture2D(uTexture, vTexCoord);\\n' +\n 'float average = (max(max(col.r, col.g),col.b) + min(min(col.r, col.g),col.b)) / 2.0;\\n' +\n 'gl_FragColor = vec4(average, average, average, col.a);\\n' +\n '}',\n luminosity:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform int uMode;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 col = texture2D(uTexture, vTexCoord);\\n' +\n 'float average = 0.21 * col.r + 0.72 * col.g + 0.07 * col.b;\\n' +\n 'gl_FragColor = vec4(average, average, average, col.a);\\n' +\n '}',\n },\n\n /**\n * Grayscale mode, between 'average', 'lightness', 'luminosity'\n * @param {String} type\n * @default\n */\n mode: 'average',\n\n mainParameter: 'mode',\n\n /**\n * Apply the Grayscale operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n i,\n len = data.length,\n value,\n mode = this.mode;\n for (i = 0; i < len; i += 4) {\n if (mode === 'average') {\n value = (data[i] + data[i + 1] + data[i + 2]) / 3;\n } else if (mode === 'lightness') {\n value =\n (Math.min(data[i], data[i + 1], data[i + 2]) +\n Math.max(data[i], data[i + 1], data[i + 2])) /\n 2;\n } else if (mode === 'luminosity') {\n value = 0.21 * data[i] + 0.72 * data[i + 1] + 0.07 * data[i + 2];\n }\n data[i] = value;\n data[i + 1] = value;\n data[i + 2] = value;\n }\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var cacheKey = this.type + '_' + this.mode;\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n var shaderSource = this.fragmentSource[this.mode];\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n shaderSource\n );\n }\n return options.programCache[cacheKey];\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uMode: gl.getUniformLocation(program, 'uMode'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n // default average mode.\n var mode = 1;\n gl.uniform1i(uniformLocations.uMode, mode);\n },\n\n /**\n * Grayscale filter isNeutralState implementation\n * The filter is never neutral\n * on the image\n **/\n isNeutralState: function () {\n return false;\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Grayscale.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Invert filter class\n * @class fabric.Image.filters.Invert\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Invert();\n * object.filters.push(filter);\n * object.applyFilters(canvas.renderAll.bind(canvas));\n */\n filters.Invert = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Invert.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Invert',\n\n /**\n * Invert also alpha.\n * @param {Boolean} alpha\n * @default\n **/\n alpha: false,\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform int uInvert;\\n' +\n 'uniform int uAlpha;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'if (uInvert == 1) {\\n' +\n 'if (uAlpha == 1) {\\n' +\n 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,1.0 -color.a);\\n' +\n '} else {\\n' +\n 'gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,color.a);\\n' +\n '}\\n' +\n '} else {\\n' +\n 'gl_FragColor = color;\\n' +\n '}\\n' +\n '}',\n\n /**\n * Filter invert. if false, does nothing\n * @param {Boolean} invert\n * @default\n */\n invert: true,\n\n mainParameter: 'invert',\n\n /**\n * Apply the Invert operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n i,\n len = data.length;\n for (i = 0; i < len; i += 4) {\n data[i] = 255 - data[i];\n data[i + 1] = 255 - data[i + 1];\n data[i + 2] = 255 - data[i + 2];\n\n if (this.alpha) {\n data[i + 3] = 255 - data[i + 3];\n }\n }\n },\n\n /**\n * Invert filter isNeutralState implementation\n * Used only in image applyFilters to discard filters that will not have an effect\n * on the image\n * @param {Object} options\n **/\n isNeutralState: function () {\n return !this.invert;\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uInvert: gl.getUniformLocation(program, 'uInvert'),\n uAlpha: gl.getUniformLocation(program, 'uAlpha'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1i(uniformLocations.uInvert, this.invert);\n gl.uniform1i(uniformLocations.uAlpha, this.alpha);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Invert.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Noise filter class\n * @class fabric.Image.filters.Noise\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Noise#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Noise({\n * noise: 700\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n filters.Noise = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Noise.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Noise',\n\n /**\n * Fragment source for the noise program\n */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uStepH;\\n' +\n 'uniform float uNoise;\\n' +\n 'uniform float uSeed;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'float rand(vec2 co, float seed, float vScale) {\\n' +\n 'return fract(sin(dot(co.xy * vScale ,vec2(12.9898 , 78.233))) * 43758.5453 * (seed + 0.01) / 2.0);\\n' +\n '}\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'color.rgb += (0.5 - rand(vTexCoord, uSeed, 0.1 / uStepH)) * uNoise;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Describe the property that is the filter parameter\n * @param {String} m\n * @default\n */\n mainParameter: 'noise',\n\n /**\n * Noise value, from\n * @param {Number} noise\n * @default\n */\n noise: 0,\n\n /**\n * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n if (this.noise === 0) {\n return;\n }\n var imageData = options.imageData,\n data = imageData.data,\n i,\n len = data.length,\n noise = this.noise,\n rand;\n\n for (i = 0, len = data.length; i < len; i += 4) {\n rand = (0.5 - Math.random()) * noise;\n\n data[i] += rand;\n data[i + 1] += rand;\n data[i + 2] += rand;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uNoise: gl.getUniformLocation(program, 'uNoise'),\n uSeed: gl.getUniformLocation(program, 'uSeed'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uNoise, this.noise / 255);\n gl.uniform1f(uniformLocations.uSeed, Math.random());\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return extend(this.callSuper('toObject'), {\n noise: this.noise,\n });\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Noise.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Pixelate filter class\n * @class fabric.Image.filters.Pixelate\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Pixelate#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Pixelate({\n * blocksize: 8\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Pixelate = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Pixelate.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Pixelate',\n\n blocksize: 4,\n\n mainParameter: 'blocksize',\n\n /**\n * Fragment source for the Pixelate program\n */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uBlocksize;\\n' +\n 'uniform float uStepW;\\n' +\n 'uniform float uStepH;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'float blockW = uBlocksize * uStepW;\\n' +\n 'float blockH = uBlocksize * uStepW;\\n' +\n 'int posX = int(vTexCoord.x / blockW);\\n' +\n 'int posY = int(vTexCoord.y / blockH);\\n' +\n 'float fposX = float(posX);\\n' +\n 'float fposY = float(posY);\\n' +\n 'vec2 squareCoords = vec2(fposX * blockW, fposY * blockH);\\n' +\n 'vec4 color = texture2D(uTexture, squareCoords);\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Apply the Pixelate operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n iLen = imageData.height,\n jLen = imageData.width,\n index,\n i,\n j,\n r,\n g,\n b,\n a,\n _i,\n _j,\n _iLen,\n _jLen;\n\n for (i = 0; i < iLen; i += this.blocksize) {\n for (j = 0; j < jLen; j += this.blocksize) {\n index = i * 4 * jLen + j * 4;\n\n r = data[index];\n g = data[index + 1];\n b = data[index + 2];\n a = data[index + 3];\n\n _iLen = Math.min(i + this.blocksize, iLen);\n _jLen = Math.min(j + this.blocksize, jLen);\n for (_i = i; _i < _iLen; _i++) {\n for (_j = j; _j < _jLen; _j++) {\n index = _i * 4 * jLen + _j * 4;\n data[index] = r;\n data[index + 1] = g;\n data[index + 2] = b;\n data[index + 3] = a;\n }\n }\n }\n }\n },\n\n /**\n * Indicate when the filter is not gonna apply changes to the image\n **/\n isNeutralState: function () {\n return this.blocksize === 1;\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uBlocksize: gl.getUniformLocation(program, 'uBlocksize'),\n uStepW: gl.getUniformLocation(program, 'uStepW'),\n uStepH: gl.getUniformLocation(program, 'uStepH'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uBlocksize, this.blocksize);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Pixelate.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Color } from '../color';\n\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n extend = fabric.util.object.extend,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Remove white filter class\n * @class fabric.Image.filters.RemoveColor\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.RemoveColor#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.RemoveColor({\n * threshold: 0.2,\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n filters.RemoveColor = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.RemoveColor.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'RemoveColor',\n\n /**\n * Color to remove, in any format understood by fabric.Color.\n * @param {String} type\n * @default\n */\n color: '#FFFFFF',\n\n /**\n * Fragment source for the brightness program\n */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec4 uLow;\\n' +\n 'uniform vec4 uHigh;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'gl_FragColor = texture2D(uTexture, vTexCoord);\\n' +\n 'if(all(greaterThan(gl_FragColor.rgb,uLow.rgb)) && all(greaterThan(uHigh.rgb,gl_FragColor.rgb))) {\\n' +\n 'gl_FragColor.a = 0.0;\\n' +\n '}\\n' +\n '}',\n\n /**\n * distance to actual color, as value up or down from each r,g,b\n * between 0 and 1\n **/\n distance: 0.02,\n\n /**\n * For color to remove inside distance, use alpha channel for a smoother deletion\n * NOT IMPLEMENTED YET\n **/\n useAlpha: false,\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.RemoveWhite.prototype\n * @param {Object} [options] Options object\n * @param {Number} [options.color=#RRGGBB] Threshold value\n * @param {Number} [options.distance=10] Distance value\n */\n\n /**\n * Applies filter to canvas element\n * @param {Object} canvasEl Canvas element to apply filter to\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n i,\n distance = this.distance * 255,\n r,\n g,\n b,\n source = new Color(this.color).getSource(),\n lowC = [\n source[0] - distance,\n source[1] - distance,\n source[2] - distance,\n ],\n highC = [\n source[0] + distance,\n source[1] + distance,\n source[2] + distance,\n ];\n\n for (i = 0; i < data.length; i += 4) {\n r = data[i];\n g = data[i + 1];\n b = data[i + 2];\n\n if (\n r > lowC[0] &&\n g > lowC[1] &&\n b > lowC[2] &&\n r < highC[0] &&\n g < highC[1] &&\n b < highC[2]\n ) {\n data[i + 3] = 0;\n }\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uLow: gl.getUniformLocation(program, 'uLow'),\n uHigh: gl.getUniformLocation(program, 'uHigh'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var source = new Color(this.color).getSource(),\n distance = parseFloat(this.distance),\n lowC = [\n 0 + source[0] / 255 - distance,\n 0 + source[1] / 255 - distance,\n 0 + source[2] / 255 - distance,\n 1,\n ],\n highC = [\n source[0] / 255 + distance,\n source[1] / 255 + distance,\n source[2] / 255 + distance,\n 1,\n ];\n gl.uniform4fv(uniformLocations.uLow, lowC);\n gl.uniform4fv(uniformLocations.uHigh, highC);\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return extend(this.callSuper('toObject'), {\n color: this.color,\n distance: this.distance,\n });\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.RemoveColor.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n var matrices = {\n Brownie: [\n 0.5997, 0.34553, -0.27082, 0, 0.186, -0.0377, 0.86095, 0.15059, 0,\n -0.1449, 0.24113, -0.07441, 0.44972, 0, -0.02965, 0, 0, 0, 1, 0,\n ],\n Vintage: [\n 0.62793, 0.32021, -0.03965, 0, 0.03784, 0.02578, 0.64411, 0.03259, 0,\n 0.02926, 0.0466, -0.08512, 0.52416, 0, 0.02023, 0, 0, 0, 1, 0,\n ],\n Kodachrome: [\n 1.12855, -0.39673, -0.03992, 0, 0.24991, -0.16404, 1.08352, -0.05498, 0,\n 0.09698, -0.16786, -0.56034, 1.60148, 0, 0.13972, 0, 0, 0, 1, 0,\n ],\n Technicolor: [\n 1.91252, -0.85453, -0.09155, 0, 0.04624, -0.30878, 1.76589, -0.10601, 0,\n -0.27589, -0.2311, -0.75018, 1.84759, 0, 0.12137, 0, 0, 0, 1, 0,\n ],\n Polaroid: [\n 1.438, -0.062, -0.062, 0, 0, -0.122, 1.378, -0.122, 0, 0, -0.016, -0.016,\n 1.483, 0, 0, 0, 0, 0, 1, 0,\n ],\n Sepia: [\n 0.393, 0.769, 0.189, 0, 0, 0.349, 0.686, 0.168, 0, 0, 0.272, 0.534, 0.131,\n 0, 0, 0, 0, 0, 1, 0,\n ],\n BlackWhite: [\n 1.5, 1.5, 1.5, 0, -1, 1.5, 1.5, 1.5, 0, -1, 1.5, 1.5, 1.5, 0, -1, 0, 0, 0,\n 1, 0,\n ],\n };\n\n for (var key in matrices) {\n filters[key] = createClass(\n filters.ColorMatrix,\n /** @lends fabric.Image.filters.Sepia.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: key,\n\n /**\n * Colormatrix for the effect\n * array of 20 floats. Numbers in positions 4, 9, 14, 19 loose meaning\n * outside the -1, 1 range.\n * @param {Array} matrix array of 20 numbers.\n * @default\n */\n matrix: matrices[key],\n\n /**\n * Lock the matrix export for this kind of static, parameter less filters.\n */\n mainParameter: false,\n /**\n * Lock the colormatrix on the color part, skipping alpha\n */\n colorsOnly: true,\n }\n );\n fabric.Image.filters[key].fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Color } from '../color';\n\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Color Blend filter class\n * @class fabric.Image.filter.BlendColor\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @example\n * var filter = new fabric.Image.filters.BlendColor({\n * color: '#000',\n * mode: 'multiply'\n * });\n *\n * var filter = new fabric.Image.filters.BlendImage({\n * image: fabricImageObject,\n * mode: 'multiply',\n * alpha: 0.5\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n\n filters.BlendColor = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Blend.prototype */ {\n type: 'BlendColor',\n\n /**\n * Color to make the blend operation with. default to a reddish color since black or white\n * gives always strong result.\n * @type String\n * @default\n **/\n color: '#F95C63',\n\n /**\n * Blend mode for the filter: one of multiply, add, diff, screen, subtract,\n * darken, lighten, overlay, exclusion, tint.\n * @type String\n * @default\n **/\n mode: 'multiply',\n\n /**\n * alpha value. represent the strength of the blend color operation.\n * @type Number\n * @default\n **/\n alpha: 1,\n\n /**\n * Fragment source for the Multiply program\n */\n fragmentSource: {\n multiply: 'gl_FragColor.rgb *= uColor.rgb;\\n',\n screen:\n 'gl_FragColor.rgb = 1.0 - (1.0 - gl_FragColor.rgb) * (1.0 - uColor.rgb);\\n',\n add: 'gl_FragColor.rgb += uColor.rgb;\\n',\n diff: 'gl_FragColor.rgb = abs(gl_FragColor.rgb - uColor.rgb);\\n',\n subtract: 'gl_FragColor.rgb -= uColor.rgb;\\n',\n lighten: 'gl_FragColor.rgb = max(gl_FragColor.rgb, uColor.rgb);\\n',\n darken: 'gl_FragColor.rgb = min(gl_FragColor.rgb, uColor.rgb);\\n',\n exclusion:\n 'gl_FragColor.rgb += uColor.rgb - 2.0 * (uColor.rgb * gl_FragColor.rgb);\\n',\n overlay:\n 'if (uColor.r < 0.5) {\\n' +\n 'gl_FragColor.r *= 2.0 * uColor.r;\\n' +\n '} else {\\n' +\n 'gl_FragColor.r = 1.0 - 2.0 * (1.0 - gl_FragColor.r) * (1.0 - uColor.r);\\n' +\n '}\\n' +\n 'if (uColor.g < 0.5) {\\n' +\n 'gl_FragColor.g *= 2.0 * uColor.g;\\n' +\n '} else {\\n' +\n 'gl_FragColor.g = 1.0 - 2.0 * (1.0 - gl_FragColor.g) * (1.0 - uColor.g);\\n' +\n '}\\n' +\n 'if (uColor.b < 0.5) {\\n' +\n 'gl_FragColor.b *= 2.0 * uColor.b;\\n' +\n '} else {\\n' +\n 'gl_FragColor.b = 1.0 - 2.0 * (1.0 - gl_FragColor.b) * (1.0 - uColor.b);\\n' +\n '}\\n',\n tint:\n 'gl_FragColor.rgb *= (1.0 - uColor.a);\\n' +\n 'gl_FragColor.rgb += uColor.rgb;\\n',\n },\n\n /**\n * build the fragment source for the filters, joining the common part with\n * the specific one.\n * @param {String} mode the mode of the filter, a key of this.fragmentSource\n * @return {String} the source to be compiled\n * @private\n */\n buildSource: function (mode) {\n return (\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec4 uColor;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'gl_FragColor = color;\\n' +\n 'if (color.a > 0.0) {\\n' +\n this.fragmentSource[mode] +\n '}\\n' +\n '}'\n );\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var cacheKey = this.type + '_' + this.mode,\n shaderSource;\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n shaderSource = this.buildSource(this.mode);\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n shaderSource\n );\n }\n return options.programCache[cacheKey];\n },\n\n /**\n * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n iLen = data.length,\n tr,\n tg,\n tb,\n r,\n g,\n b,\n source,\n alpha1 = 1 - this.alpha;\n\n source = new Color(this.color).getSource();\n tr = source[0] * this.alpha;\n tg = source[1] * this.alpha;\n tb = source[2] * this.alpha;\n\n for (var i = 0; i < iLen; i += 4) {\n r = data[i];\n g = data[i + 1];\n b = data[i + 2];\n\n switch (this.mode) {\n case 'multiply':\n data[i] = (r * tr) / 255;\n data[i + 1] = (g * tg) / 255;\n data[i + 2] = (b * tb) / 255;\n break;\n case 'screen':\n data[i] = 255 - ((255 - r) * (255 - tr)) / 255;\n data[i + 1] = 255 - ((255 - g) * (255 - tg)) / 255;\n data[i + 2] = 255 - ((255 - b) * (255 - tb)) / 255;\n break;\n case 'add':\n data[i] = r + tr;\n data[i + 1] = g + tg;\n data[i + 2] = b + tb;\n break;\n case 'diff':\n case 'difference':\n data[i] = Math.abs(r - tr);\n data[i + 1] = Math.abs(g - tg);\n data[i + 2] = Math.abs(b - tb);\n break;\n case 'subtract':\n data[i] = r - tr;\n data[i + 1] = g - tg;\n data[i + 2] = b - tb;\n break;\n case 'darken':\n data[i] = Math.min(r, tr);\n data[i + 1] = Math.min(g, tg);\n data[i + 2] = Math.min(b, tb);\n break;\n case 'lighten':\n data[i] = Math.max(r, tr);\n data[i + 1] = Math.max(g, tg);\n data[i + 2] = Math.max(b, tb);\n break;\n case 'overlay':\n data[i] =\n tr < 128\n ? (2 * r * tr) / 255\n : 255 - (2 * (255 - r) * (255 - tr)) / 255;\n data[i + 1] =\n tg < 128\n ? (2 * g * tg) / 255\n : 255 - (2 * (255 - g) * (255 - tg)) / 255;\n data[i + 2] =\n tb < 128\n ? (2 * b * tb) / 255\n : 255 - (2 * (255 - b) * (255 - tb)) / 255;\n break;\n case 'exclusion':\n data[i] = tr + r - (2 * tr * r) / 255;\n data[i + 1] = tg + g - (2 * tg * g) / 255;\n data[i + 2] = tb + b - (2 * tb * b) / 255;\n break;\n case 'tint':\n data[i] = tr + r * alpha1;\n data[i + 1] = tg + g * alpha1;\n data[i + 2] = tb + b * alpha1;\n }\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uColor: gl.getUniformLocation(program, 'uColor'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var source = new Color(this.color).getSource();\n source[0] = (this.alpha * source[0]) / 255;\n source[1] = (this.alpha * source[1]) / 255;\n source[2] = (this.alpha * source[2]) / 255;\n source[3] = this.alpha;\n gl.uniform4fv(uniformLocations.uColor, source);\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return {\n type: this.type,\n color: this.color,\n mode: this.mode,\n alpha: this.alpha,\n };\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.BlendColor.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Image Blend filter class\n * @class fabric.Image.filter.BlendImage\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @example\n * var filter = new fabric.Image.filters.BlendColor({\n * color: '#000',\n * mode: 'multiply'\n * });\n *\n * var filter = new fabric.Image.filters.BlendImage({\n * image: fabricImageObject,\n * mode: 'multiply',\n * alpha: 0.5\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n\n filters.BlendImage = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.BlendImage.prototype */ {\n type: 'BlendImage',\n\n /**\n * Color to make the blend operation with. default to a reddish color since black or white\n * gives always strong result.\n **/\n image: null,\n\n /**\n * Blend mode for the filter (one of \"multiply\", \"mask\")\n * @type String\n * @default\n **/\n mode: 'multiply',\n\n /**\n * alpha value. represent the strength of the blend image operation.\n * not implemented.\n **/\n alpha: 1,\n\n vertexSource:\n 'attribute vec2 aPosition;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'varying vec2 vTexCoord2;\\n' +\n 'uniform mat3 uTransformMatrix;\\n' +\n 'void main() {\\n' +\n 'vTexCoord = aPosition;\\n' +\n 'vTexCoord2 = (uTransformMatrix * vec3(aPosition, 1.0)).xy;\\n' +\n 'gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);\\n' +\n '}',\n\n /**\n * Fragment source for the Multiply program\n */\n fragmentSource: {\n multiply:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform sampler2D uImage;\\n' +\n 'uniform vec4 uColor;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'varying vec2 vTexCoord2;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'vec4 color2 = texture2D(uImage, vTexCoord2);\\n' +\n 'color.rgba *= color2.rgba;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n mask:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform sampler2D uImage;\\n' +\n 'uniform vec4 uColor;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'varying vec2 vTexCoord2;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'vec4 color2 = texture2D(uImage, vTexCoord2);\\n' +\n 'color.a = color2.a;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var cacheKey = this.type + '_' + this.mode;\n var shaderSource = this.fragmentSource[this.mode];\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n shaderSource\n );\n }\n return options.programCache[cacheKey];\n },\n\n applyToWebGL: function (options) {\n // load texture to blend.\n var gl = options.context,\n texture = this.createTexture(options.filterBackend, this.image);\n this.bindAdditionalTexture(gl, texture, gl.TEXTURE1);\n this.callSuper('applyToWebGL', options);\n this.unbindAdditionalTexture(gl, gl.TEXTURE1);\n },\n\n createTexture: function (backend, image) {\n return backend.getCachedTexture(image.cacheKey, image._element);\n },\n\n /**\n * Calculate a transformMatrix to adapt the image to blend over\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n calculateMatrix: function () {\n var image = this.image,\n width = image._element.width,\n height = image._element.height;\n return [\n 1 / image.scaleX,\n 0,\n 0,\n 0,\n 1 / image.scaleY,\n 0,\n -image.left / width,\n -image.top / height,\n 1,\n ];\n },\n\n /**\n * Apply the Blend operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n resources = options.filterBackend.resources,\n data = imageData.data,\n iLen = data.length,\n width = imageData.width,\n height = imageData.height,\n tr,\n tg,\n tb,\n ta,\n r,\n g,\n b,\n a,\n canvas1,\n context,\n image = this.image,\n blendData;\n\n if (!resources.blendImage) {\n resources.blendImage = fabric.util.createCanvasElement();\n }\n canvas1 = resources.blendImage;\n context = canvas1.getContext('2d');\n if (canvas1.width !== width || canvas1.height !== height) {\n canvas1.width = width;\n canvas1.height = height;\n } else {\n context.clearRect(0, 0, width, height);\n }\n context.setTransform(\n image.scaleX,\n 0,\n 0,\n image.scaleY,\n image.left,\n image.top\n );\n context.drawImage(image._element, 0, 0, width, height);\n blendData = context.getImageData(0, 0, width, height).data;\n for (var i = 0; i < iLen; i += 4) {\n r = data[i];\n g = data[i + 1];\n b = data[i + 2];\n a = data[i + 3];\n\n tr = blendData[i];\n tg = blendData[i + 1];\n tb = blendData[i + 2];\n ta = blendData[i + 3];\n\n switch (this.mode) {\n case 'multiply':\n data[i] = (r * tr) / 255;\n data[i + 1] = (g * tg) / 255;\n data[i + 2] = (b * tb) / 255;\n data[i + 3] = (a * ta) / 255;\n break;\n case 'mask':\n data[i + 3] = ta;\n break;\n }\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uTransformMatrix: gl.getUniformLocation(program, 'uTransformMatrix'),\n uImage: gl.getUniformLocation(program, 'uImage'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var matrix = this.calculateMatrix();\n gl.uniform1i(uniformLocations.uImage, 1); // texture unit 1.\n gl.uniformMatrix3fv(uniformLocations.uTransformMatrix, false, matrix);\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return {\n type: this.type,\n image: this.image && this.image.toObject(),\n mode: this.mode,\n alpha: this.alpha,\n };\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {object} object Object to create an instance from\n * @param {object} [options]\n * @param {AbortSignal} [options.signal] handle aborting image loading, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Image.filters.BlendImage.fromObject = function (object, options) {\n return fabric.Image.fromObject(object.image, options).then(function (\n image\n ) {\n return new fabric.Image.filters.BlendImage(\n Object.assign({}, object, { image: image })\n );\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n pow = Math.pow,\n floor = Math.floor,\n sqrt = Math.sqrt,\n abs = Math.abs,\n round = Math.round,\n sin = Math.sin,\n ceil = Math.ceil,\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Resize image filter class\n * @class fabric.Image.filters.Resize\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Resize();\n * object.filters.push(filter);\n * object.applyFilters(canvas.renderAll.bind(canvas));\n */\n filters.Resize = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Resize.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Resize',\n\n /**\n * Resize type\n * for webgl resizeType is just lanczos, for canvas2d can be:\n * bilinear, hermite, sliceHack, lanczos.\n * @param {String} resizeType\n * @default\n */\n resizeType: 'hermite',\n\n /**\n * Scale factor for resizing, x axis\n * @param {Number} scaleX\n * @default\n */\n scaleX: 1,\n\n /**\n * Scale factor for resizing, y axis\n * @param {Number} scaleY\n * @default\n */\n scaleY: 1,\n\n /**\n * LanczosLobes parameter for lanczos filter, valid for resizeType lanczos\n * @param {Number} lanczosLobes\n * @default\n */\n lanczosLobes: 3,\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uDelta: gl.getUniformLocation(program, 'uDelta'),\n uTaps: gl.getUniformLocation(program, 'uTaps'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform2fv(\n uniformLocations.uDelta,\n this.horizontal ? [1 / this.width, 0] : [0, 1 / this.height]\n );\n gl.uniform1fv(uniformLocations.uTaps, this.taps);\n },\n\n /**\n * Retrieves the cached shader.\n * @param {Object} options\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n retrieveShader: function (options) {\n var filterWindow = this.getFilterWindow(),\n cacheKey = this.type + '_' + filterWindow;\n if (!options.programCache.hasOwnProperty(cacheKey)) {\n var fragmentShader = this.generateShader(filterWindow);\n options.programCache[cacheKey] = this.createProgram(\n options.context,\n fragmentShader\n );\n }\n return options.programCache[cacheKey];\n },\n\n getFilterWindow: function () {\n var scale = this.tempScale;\n return Math.ceil(this.lanczosLobes / scale);\n },\n\n getTaps: function () {\n var lobeFunction = this.lanczosCreate(this.lanczosLobes),\n scale = this.tempScale,\n filterWindow = this.getFilterWindow(),\n taps = new Array(filterWindow);\n for (var i = 1; i <= filterWindow; i++) {\n taps[i - 1] = lobeFunction(i * scale);\n }\n return taps;\n },\n\n /**\n * Generate vertex and shader sources from the necessary steps numbers\n * @param {Number} filterWindow\n */\n generateShader: function (filterWindow) {\n var offsets = new Array(filterWindow),\n fragmentShader = this.fragmentSourceTOP,\n filterWindow;\n\n for (var i = 1; i <= filterWindow; i++) {\n offsets[i - 1] = i + '.0 * uDelta';\n }\n\n fragmentShader += 'uniform float uTaps[' + filterWindow + '];\\n';\n fragmentShader += 'void main() {\\n';\n fragmentShader += ' vec4 color = texture2D(uTexture, vTexCoord);\\n';\n fragmentShader += ' float sum = 1.0;\\n';\n\n offsets.forEach(function (offset, i) {\n fragmentShader +=\n ' color += texture2D(uTexture, vTexCoord + ' +\n offset +\n ') * uTaps[' +\n i +\n '];\\n';\n fragmentShader +=\n ' color += texture2D(uTexture, vTexCoord - ' +\n offset +\n ') * uTaps[' +\n i +\n '];\\n';\n fragmentShader += ' sum += 2.0 * uTaps[' + i + '];\\n';\n });\n fragmentShader += ' gl_FragColor = color / sum;\\n';\n fragmentShader += '}';\n return fragmentShader;\n },\n\n fragmentSourceTOP:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec2 uDelta;\\n' +\n 'varying vec2 vTexCoord;\\n',\n\n /**\n * Apply the resize filter to the image\n * Determines whether to use WebGL or Canvas2D based on the options.webgl flag.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be executed\n * @param {Boolean} options.webgl Whether to use webgl to render the filter.\n * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered.\n * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn.\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n applyTo: function (options) {\n if (options.webgl) {\n options.passes++;\n this.width = options.sourceWidth;\n this.horizontal = true;\n this.dW = Math.round(this.width * this.scaleX);\n this.dH = options.sourceHeight;\n this.tempScale = this.dW / this.width;\n this.taps = this.getTaps();\n options.destinationWidth = this.dW;\n this._setupFrameBuffer(options);\n this.applyToWebGL(options);\n this._swapTextures(options);\n options.sourceWidth = options.destinationWidth;\n\n this.height = options.sourceHeight;\n this.horizontal = false;\n this.dH = Math.round(this.height * this.scaleY);\n this.tempScale = this.dH / this.height;\n this.taps = this.getTaps();\n options.destinationHeight = this.dH;\n this._setupFrameBuffer(options);\n this.applyToWebGL(options);\n this._swapTextures(options);\n options.sourceHeight = options.destinationHeight;\n } else {\n this.applyTo2d(options);\n }\n },\n\n isNeutralState: function () {\n return this.scaleX === 1 && this.scaleY === 1;\n },\n\n lanczosCreate: function (lobes) {\n return function (x) {\n if (x >= lobes || x <= -lobes) {\n return 0.0;\n }\n if (x < 1.1920929e-7 && x > -1.1920929e-7) {\n return 1.0;\n }\n x *= Math.PI;\n var xx = x / lobes;\n return ((sin(x) / x) * sin(xx)) / xx;\n };\n },\n\n /**\n * Applies filter to canvas element\n * @memberOf fabric.Image.filters.Resize.prototype\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} scaleX\n * @param {Number} scaleY\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n scaleX = this.scaleX,\n scaleY = this.scaleY;\n\n this.rcpScaleX = 1 / scaleX;\n this.rcpScaleY = 1 / scaleY;\n\n var oW = imageData.width,\n oH = imageData.height,\n dW = round(oW * scaleX),\n dH = round(oH * scaleY),\n newData;\n\n if (this.resizeType === 'sliceHack') {\n newData = this.sliceByTwo(options, oW, oH, dW, dH);\n } else if (this.resizeType === 'hermite') {\n newData = this.hermiteFastResize(options, oW, oH, dW, dH);\n } else if (this.resizeType === 'bilinear') {\n newData = this.bilinearFiltering(options, oW, oH, dW, dH);\n } else if (this.resizeType === 'lanczos') {\n newData = this.lanczosResize(options, oW, oH, dW, dH);\n }\n options.imageData = newData;\n },\n\n /**\n * Filter sliceByTwo\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} oW Original Width\n * @param {Number} oH Original Height\n * @param {Number} dW Destination Width\n * @param {Number} dH Destination Height\n * @returns {ImageData}\n */\n sliceByTwo: function (options, oW, oH, dW, dH) {\n var imageData = options.imageData,\n mult = 0.5,\n doneW = false,\n doneH = false,\n stepW = oW * mult,\n stepH = oH * mult,\n resources = fabric.filterBackend.resources,\n tmpCanvas,\n ctx,\n sX = 0,\n sY = 0,\n dX = oW,\n dY = 0;\n if (!resources.sliceByTwo) {\n resources.sliceByTwo = document.createElement('canvas');\n }\n tmpCanvas = resources.sliceByTwo;\n if (tmpCanvas.width < oW * 1.5 || tmpCanvas.height < oH) {\n tmpCanvas.width = oW * 1.5;\n tmpCanvas.height = oH;\n }\n ctx = tmpCanvas.getContext('2d');\n ctx.clearRect(0, 0, oW * 1.5, oH);\n ctx.putImageData(imageData, 0, 0);\n\n dW = floor(dW);\n dH = floor(dH);\n\n while (!doneW || !doneH) {\n oW = stepW;\n oH = stepH;\n if (dW < floor(stepW * mult)) {\n stepW = floor(stepW * mult);\n } else {\n stepW = dW;\n doneW = true;\n }\n if (dH < floor(stepH * mult)) {\n stepH = floor(stepH * mult);\n } else {\n stepH = dH;\n doneH = true;\n }\n ctx.drawImage(tmpCanvas, sX, sY, oW, oH, dX, dY, stepW, stepH);\n sX = dX;\n sY = dY;\n dY += stepH;\n }\n return ctx.getImageData(sX, sY, dW, dH);\n },\n\n /**\n * Filter lanczosResize\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} oW Original Width\n * @param {Number} oH Original Height\n * @param {Number} dW Destination Width\n * @param {Number} dH Destination Height\n * @returns {ImageData}\n */\n lanczosResize: function (options, oW, oH, dW, dH) {\n function process(u) {\n var v, i, weight, idx, a, red, green, blue, alpha, fX, fY;\n center.x = (u + 0.5) * ratioX;\n icenter.x = floor(center.x);\n for (v = 0; v < dH; v++) {\n center.y = (v + 0.5) * ratioY;\n icenter.y = floor(center.y);\n a = 0;\n red = 0;\n green = 0;\n blue = 0;\n alpha = 0;\n for (i = icenter.x - range2X; i <= icenter.x + range2X; i++) {\n if (i < 0 || i >= oW) {\n continue;\n }\n fX = floor(1000 * abs(i - center.x));\n if (!cacheLanc[fX]) {\n cacheLanc[fX] = {};\n }\n for (var j = icenter.y - range2Y; j <= icenter.y + range2Y; j++) {\n if (j < 0 || j >= oH) {\n continue;\n }\n fY = floor(1000 * abs(j - center.y));\n if (!cacheLanc[fX][fY]) {\n cacheLanc[fX][fY] = lanczos(\n sqrt(pow(fX * rcpRatioX, 2) + pow(fY * rcpRatioY, 2)) / 1000\n );\n }\n weight = cacheLanc[fX][fY];\n if (weight > 0) {\n idx = (j * oW + i) * 4;\n a += weight;\n red += weight * srcData[idx];\n green += weight * srcData[idx + 1];\n blue += weight * srcData[idx + 2];\n alpha += weight * srcData[idx + 3];\n }\n }\n }\n idx = (v * dW + u) * 4;\n destData[idx] = red / a;\n destData[idx + 1] = green / a;\n destData[idx + 2] = blue / a;\n destData[idx + 3] = alpha / a;\n }\n\n if (++u < dW) {\n return process(u);\n } else {\n return destImg;\n }\n }\n\n var srcData = options.imageData.data,\n destImg = options.ctx.createImageData(dW, dH),\n destData = destImg.data,\n lanczos = this.lanczosCreate(this.lanczosLobes),\n ratioX = this.rcpScaleX,\n ratioY = this.rcpScaleY,\n rcpRatioX = 2 / this.rcpScaleX,\n rcpRatioY = 2 / this.rcpScaleY,\n range2X = ceil((ratioX * this.lanczosLobes) / 2),\n range2Y = ceil((ratioY * this.lanczosLobes) / 2),\n cacheLanc = {},\n center = {},\n icenter = {};\n\n return process(0);\n },\n\n /**\n * bilinearFiltering\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} oW Original Width\n * @param {Number} oH Original Height\n * @param {Number} dW Destination Width\n * @param {Number} dH Destination Height\n * @returns {ImageData}\n */\n bilinearFiltering: function (options, oW, oH, dW, dH) {\n var a,\n b,\n c,\n d,\n x,\n y,\n i,\n j,\n xDiff,\n yDiff,\n chnl,\n color,\n offset = 0,\n origPix,\n ratioX = this.rcpScaleX,\n ratioY = this.rcpScaleY,\n w4 = 4 * (oW - 1),\n img = options.imageData,\n pixels = img.data,\n destImage = options.ctx.createImageData(dW, dH),\n destPixels = destImage.data;\n for (i = 0; i < dH; i++) {\n for (j = 0; j < dW; j++) {\n x = floor(ratioX * j);\n y = floor(ratioY * i);\n xDiff = ratioX * j - x;\n yDiff = ratioY * i - y;\n origPix = 4 * (y * oW + x);\n\n for (chnl = 0; chnl < 4; chnl++) {\n a = pixels[origPix + chnl];\n b = pixels[origPix + 4 + chnl];\n c = pixels[origPix + w4 + chnl];\n d = pixels[origPix + w4 + 4 + chnl];\n color =\n a * (1 - xDiff) * (1 - yDiff) +\n b * xDiff * (1 - yDiff) +\n c * yDiff * (1 - xDiff) +\n d * xDiff * yDiff;\n destPixels[offset++] = color;\n }\n }\n }\n return destImage;\n },\n\n /**\n * hermiteFastResize\n * @param {Object} canvasEl Canvas element to apply filter to\n * @param {Number} oW Original Width\n * @param {Number} oH Original Height\n * @param {Number} dW Destination Width\n * @param {Number} dH Destination Height\n * @returns {ImageData}\n */\n hermiteFastResize: function (options, oW, oH, dW, dH) {\n var ratioW = this.rcpScaleX,\n ratioH = this.rcpScaleY,\n ratioWHalf = ceil(ratioW / 2),\n ratioHHalf = ceil(ratioH / 2),\n img = options.imageData,\n data = img.data,\n img2 = options.ctx.createImageData(dW, dH),\n data2 = img2.data;\n for (var j = 0; j < dH; j++) {\n for (var i = 0; i < dW; i++) {\n var x2 = (i + j * dW) * 4,\n weight = 0,\n weights = 0,\n weightsAlpha = 0,\n gxR = 0,\n gxG = 0,\n gxB = 0,\n gxA = 0,\n centerY = (j + 0.5) * ratioH;\n for (var yy = floor(j * ratioH); yy < (j + 1) * ratioH; yy++) {\n var dy = abs(centerY - (yy + 0.5)) / ratioHHalf,\n centerX = (i + 0.5) * ratioW,\n w0 = dy * dy;\n for (var xx = floor(i * ratioW); xx < (i + 1) * ratioW; xx++) {\n var dx = abs(centerX - (xx + 0.5)) / ratioWHalf,\n w = sqrt(w0 + dx * dx);\n /* eslint-disable max-depth */\n if (w > 1 && w < -1) {\n continue;\n }\n //hermite filter\n weight = 2 * w * w * w - 3 * w * w + 1;\n if (weight > 0) {\n dx = 4 * (xx + yy * oW);\n //alpha\n gxA += weight * data[dx + 3];\n weightsAlpha += weight;\n //colors\n if (data[dx + 3] < 255) {\n weight = (weight * data[dx + 3]) / 250;\n }\n gxR += weight * data[dx];\n gxG += weight * data[dx + 1];\n gxB += weight * data[dx + 2];\n weights += weight;\n }\n /* eslint-enable max-depth */\n }\n }\n data2[x2] = gxR / weights;\n data2[x2 + 1] = gxG / weights;\n data2[x2 + 2] = gxB / weights;\n data2[x2 + 3] = gxA / weightsAlpha;\n }\n }\n return img2;\n },\n\n /**\n * Returns object representation of an instance\n * @return {Object} Object representation of an instance\n */\n toObject: function () {\n return {\n type: this.type,\n scaleX: this.scaleX,\n scaleY: this.scaleY,\n resizeType: this.resizeType,\n lanczosLobes: this.lanczosLobes,\n };\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Resize.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Contrast filter class\n * @class fabric.Image.filters.Contrast\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Contrast#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Contrast({\n * contrast: 0.25\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Contrast = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Contrast.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Contrast',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uContrast;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'float contrastF = 1.015 * (uContrast + 1.0) / (1.0 * (1.015 - uContrast));\\n' +\n 'color.rgb = contrastF * (color.rgb - 0.5) + 0.5;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * contrast value, range from -1 to 1.\n * @param {Number} contrast\n * @default 0\n */\n contrast: 0,\n\n mainParameter: 'contrast',\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.Contrast.prototype\n * @param {Object} [options] Options object\n * @param {Number} [options.contrast=0] Value to contrast the image up (-1...1)\n */\n\n /**\n * Apply the Contrast operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n if (this.contrast === 0) {\n return;\n }\n var imageData = options.imageData,\n i,\n len,\n data = imageData.data,\n len = data.length,\n contrast = Math.floor(this.contrast * 255),\n contrastF = (259 * (contrast + 255)) / (255 * (259 - contrast));\n\n for (i = 0; i < len; i += 4) {\n data[i] = contrastF * (data[i] - 128) + 128;\n data[i + 1] = contrastF * (data[i + 1] - 128) + 128;\n data[i + 2] = contrastF * (data[i + 2] - 128) + 128;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uContrast: gl.getUniformLocation(program, 'uContrast'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uContrast, this.contrast);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Contrast.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Saturate filter class\n * @class fabric.Image.filters.Saturation\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Saturation#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Saturation({\n * saturation: 1\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Saturation = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Saturation.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Saturation',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uSaturation;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'float rgMax = max(color.r, color.g);\\n' +\n 'float rgbMax = max(rgMax, color.b);\\n' +\n 'color.r += rgbMax != color.r ? (rgbMax - color.r) * uSaturation : 0.00;\\n' +\n 'color.g += rgbMax != color.g ? (rgbMax - color.g) * uSaturation : 0.00;\\n' +\n 'color.b += rgbMax != color.b ? (rgbMax - color.b) * uSaturation : 0.00;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Saturation value, from -1 to 1.\n * Increases/decreases the color saturation.\n * A value of 0 has no effect.\n *\n * @param {Number} saturation\n * @default\n */\n saturation: 0,\n\n mainParameter: 'saturation',\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.Saturate.prototype\n * @param {Object} [options] Options object\n * @param {Number} [options.saturate=0] Value to saturate the image (-1...1)\n */\n\n /**\n * Apply the Saturation operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n if (this.saturation === 0) {\n return;\n }\n var imageData = options.imageData,\n data = imageData.data,\n len = data.length,\n adjust = -this.saturation,\n i,\n max;\n\n for (i = 0; i < len; i += 4) {\n max = Math.max(data[i], data[i + 1], data[i + 2]);\n data[i] += max !== data[i] ? (max - data[i]) * adjust : 0;\n data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * adjust : 0;\n data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * adjust : 0;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uSaturation: gl.getUniformLocation(program, 'uSaturation'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uSaturation, -this.saturation);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Saturation.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Vibrance filter class\n * @class fabric.Image.filters.Vibrance\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Vibrance#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Vibrance({\n * vibrance: 1\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Vibrance = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Vibrance.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Vibrance',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform float uVibrance;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'float max = max(color.r, max(color.g, color.b));\\n' +\n 'float avg = (color.r + color.g + color.b) / 3.0;\\n' +\n 'float amt = (abs(max - avg) * 2.0) * uVibrance;\\n' +\n 'color.r += max != color.r ? (max - color.r) * amt : 0.00;\\n' +\n 'color.g += max != color.g ? (max - color.g) * amt : 0.00;\\n' +\n 'color.b += max != color.b ? (max - color.b) * amt : 0.00;\\n' +\n 'gl_FragColor = color;\\n' +\n '}',\n\n /**\n * Vibrance value, from -1 to 1.\n * Increases/decreases the saturation of more muted colors with less effect on saturated colors.\n * A value of 0 has no effect.\n *\n * @param {Number} vibrance\n * @default\n */\n vibrance: 0,\n\n mainParameter: 'vibrance',\n\n /**\n * Constructor\n * @memberOf fabric.Image.filters.Vibrance.prototype\n * @param {Object} [options] Options object\n * @param {Number} [options.vibrance=0] Vibrance value for the image (between -1 and 1)\n */\n\n /**\n * Apply the Vibrance operation to a Uint8ClampedArray representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n */\n applyTo2d: function (options) {\n if (this.vibrance === 0) {\n return;\n }\n var imageData = options.imageData,\n data = imageData.data,\n len = data.length,\n adjust = -this.vibrance,\n i,\n max,\n avg,\n amt;\n\n for (i = 0; i < len; i += 4) {\n max = Math.max(data[i], data[i + 1], data[i + 2]);\n avg = (data[i] + data[i + 1] + data[i + 2]) / 3;\n amt = ((Math.abs(max - avg) * 2) / 255) * adjust;\n data[i] += max !== data[i] ? (max - data[i]) * amt : 0;\n data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * amt : 0;\n data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * amt : 0;\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uVibrance: gl.getUniformLocation(program, 'uVibrance'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform1f(uniformLocations.uVibrance, -this.vibrance);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Vibrance.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Blur filter class\n * @class fabric.Image.filters.Blur\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Blur#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Blur({\n * blur: 0.5\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\n filters.Blur = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Blur.prototype */ {\n type: 'Blur',\n\n /*\n'gl_FragColor = vec4(0.0);',\n'gl_FragColor += texture2D(texture, vTexCoord + -7 * uDelta)*0.0044299121055113265;',\n'gl_FragColor += texture2D(texture, vTexCoord + -6 * uDelta)*0.00895781211794;',\n'gl_FragColor += texture2D(texture, vTexCoord + -5 * uDelta)*0.0215963866053;',\n'gl_FragColor += texture2D(texture, vTexCoord + -4 * uDelta)*0.0443683338718;',\n'gl_FragColor += texture2D(texture, vTexCoord + -3 * uDelta)*0.0776744219933;',\n'gl_FragColor += texture2D(texture, vTexCoord + -2 * uDelta)*0.115876621105;',\n'gl_FragColor += texture2D(texture, vTexCoord + -1 * uDelta)*0.147308056121;',\n'gl_FragColor += texture2D(texture, vTexCoord )*0.159576912161;',\n'gl_FragColor += texture2D(texture, vTexCoord + 1 * uDelta)*0.147308056121;',\n'gl_FragColor += texture2D(texture, vTexCoord + 2 * uDelta)*0.115876621105;',\n'gl_FragColor += texture2D(texture, vTexCoord + 3 * uDelta)*0.0776744219933;',\n'gl_FragColor += texture2D(texture, vTexCoord + 4 * uDelta)*0.0443683338718;',\n'gl_FragColor += texture2D(texture, vTexCoord + 5 * uDelta)*0.0215963866053;',\n'gl_FragColor += texture2D(texture, vTexCoord + 6 * uDelta)*0.00895781211794;',\n'gl_FragColor += texture2D(texture, vTexCoord + 7 * uDelta)*0.0044299121055113265;',\n*/\n\n /* eslint-disable max-len */\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec2 uDelta;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'const float nSamples = 15.0;\\n' +\n 'vec3 v3offset = vec3(12.9898, 78.233, 151.7182);\\n' +\n 'float random(vec3 scale) {\\n' +\n /* use the fragment position for a different seed per-pixel */\n 'return fract(sin(dot(gl_FragCoord.xyz, scale)) * 43758.5453);\\n' +\n '}\\n' +\n 'void main() {\\n' +\n 'vec4 color = vec4(0.0);\\n' +\n 'float total = 0.0;\\n' +\n 'float offset = random(v3offset);\\n' +\n 'for (float t = -nSamples; t <= nSamples; t++) {\\n' +\n 'float percent = (t + offset - 0.5) / nSamples;\\n' +\n 'float weight = 1.0 - abs(percent);\\n' +\n 'color += texture2D(uTexture, vTexCoord + uDelta * percent) * weight;\\n' +\n 'total += weight;\\n' +\n '}\\n' +\n 'gl_FragColor = color / total;\\n' +\n '}',\n /* eslint-enable max-len */\n\n /**\n * blur value, in percentage of image dimensions.\n * specific to keep the image blur constant at different resolutions\n * range between 0 and 1.\n * @type Number\n * @default\n */\n blur: 0,\n\n mainParameter: 'blur',\n\n applyTo: function (options) {\n if (options.webgl) {\n // this aspectRatio is used to give the same blur to vertical and horizontal\n this.aspectRatio = options.sourceWidth / options.sourceHeight;\n options.passes++;\n this._setupFrameBuffer(options);\n this.horizontal = true;\n this.applyToWebGL(options);\n this._swapTextures(options);\n this._setupFrameBuffer(options);\n this.horizontal = false;\n this.applyToWebGL(options);\n this._swapTextures(options);\n } else {\n this.applyTo2d(options);\n }\n },\n\n applyTo2d: function (options) {\n // paint canvasEl with current image data.\n //options.ctx.putImageData(options.imageData, 0, 0);\n options.imageData = this.simpleBlur(options);\n },\n\n simpleBlur: function (options) {\n var resources = options.filterBackend.resources,\n canvas1,\n canvas2,\n width = options.imageData.width,\n height = options.imageData.height;\n\n if (!resources.blurLayer1) {\n resources.blurLayer1 = fabric.util.createCanvasElement();\n resources.blurLayer2 = fabric.util.createCanvasElement();\n }\n canvas1 = resources.blurLayer1;\n canvas2 = resources.blurLayer2;\n if (canvas1.width !== width || canvas1.height !== height) {\n canvas2.width = canvas1.width = width;\n canvas2.height = canvas1.height = height;\n }\n var ctx1 = canvas1.getContext('2d'),\n ctx2 = canvas2.getContext('2d'),\n nSamples = 15,\n random,\n percent,\n j,\n i,\n blur = this.blur * 0.06 * 0.5;\n\n // load first canvas\n ctx1.putImageData(options.imageData, 0, 0);\n ctx2.clearRect(0, 0, width, height);\n\n for (i = -nSamples; i <= nSamples; i++) {\n random = (Math.random() - 0.5) / 4;\n percent = i / nSamples;\n j = blur * percent * width + random;\n ctx2.globalAlpha = 1 - Math.abs(percent);\n ctx2.drawImage(canvas1, j, random);\n ctx1.drawImage(canvas2, 0, 0);\n ctx2.globalAlpha = 1;\n ctx2.clearRect(0, 0, canvas2.width, canvas2.height);\n }\n for (i = -nSamples; i <= nSamples; i++) {\n random = (Math.random() - 0.5) / 4;\n percent = i / nSamples;\n j = blur * percent * height + random;\n ctx2.globalAlpha = 1 - Math.abs(percent);\n ctx2.drawImage(canvas1, random, j);\n ctx1.drawImage(canvas2, 0, 0);\n ctx2.globalAlpha = 1;\n ctx2.clearRect(0, 0, canvas2.width, canvas2.height);\n }\n options.ctx.drawImage(canvas1, 0, 0);\n var newImageData = options.ctx.getImageData(\n 0,\n 0,\n canvas1.width,\n canvas1.height\n );\n ctx1.globalAlpha = 1;\n ctx1.clearRect(0, 0, canvas1.width, canvas1.height);\n return newImageData;\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n delta: gl.getUniformLocation(program, 'uDelta'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n var delta = this.chooseRightDelta();\n gl.uniform2fv(uniformLocations.delta, delta);\n },\n\n /**\n * choose right value of image percentage to blur with\n * @returns {Array} a numeric array with delta values\n */\n chooseRightDelta: function () {\n var blurScale = 1,\n delta = [0, 0],\n blur;\n if (this.horizontal) {\n if (this.aspectRatio > 1) {\n // image is wide, i want to shrink radius horizontal\n blurScale = 1 / this.aspectRatio;\n }\n } else {\n if (this.aspectRatio < 1) {\n // image is tall, i want to shrink radius vertical\n blurScale = this.aspectRatio;\n }\n }\n blur = blurScale * this.blur * 0.12;\n if (this.horizontal) {\n delta[0] = blur;\n } else {\n delta[1] = blur;\n }\n return delta;\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n filters.Blur.fromObject = fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * Gamma filter class\n * @class fabric.Image.filters.Gamma\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.Gamma#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.Gamma({\n * gamma: [1, 0.5, 2.1]\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.Gamma = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Gamma.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'Gamma',\n\n fragmentSource:\n 'precision highp float;\\n' +\n 'uniform sampler2D uTexture;\\n' +\n 'uniform vec3 uGamma;\\n' +\n 'varying vec2 vTexCoord;\\n' +\n 'void main() {\\n' +\n 'vec4 color = texture2D(uTexture, vTexCoord);\\n' +\n 'vec3 correction = (1.0 / uGamma);\\n' +\n 'color.r = pow(color.r, correction.r);\\n' +\n 'color.g = pow(color.g, correction.g);\\n' +\n 'color.b = pow(color.b, correction.b);\\n' +\n 'gl_FragColor = color;\\n' +\n 'gl_FragColor.rgb *= color.a;\\n' +\n '}',\n\n /**\n * Gamma array value, from 0.01 to 2.2.\n * @param {Array} gamma\n * @default\n */\n gamma: [1, 1, 1],\n\n /**\n * Describe the property that is the filter parameter\n * @param {String} m\n * @default\n */\n mainParameter: 'gamma',\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n this.gamma = [1, 1, 1];\n filters.BaseFilter.prototype.initialize.call(this, options);\n },\n\n /**\n * Apply the Gamma operation to a Uint8Array representing the pixels of an image.\n *\n * @param {Object} options\n * @param {ImageData} options.imageData The Uint8Array to be filtered.\n */\n applyTo2d: function (options) {\n var imageData = options.imageData,\n data = imageData.data,\n gamma = this.gamma,\n len = data.length,\n rInv = 1 / gamma[0],\n gInv = 1 / gamma[1],\n bInv = 1 / gamma[2],\n i;\n\n if (!this.rVals) {\n // eslint-disable-next-line\n this.rVals = new Uint8Array(256);\n // eslint-disable-next-line\n this.gVals = new Uint8Array(256);\n // eslint-disable-next-line\n this.bVals = new Uint8Array(256);\n }\n\n // This is an optimization - pre-compute a look-up table for each color channel\n // instead of performing these pow calls for each pixel in the image.\n for (i = 0, len = 256; i < len; i++) {\n this.rVals[i] = Math.pow(i / 255, rInv) * 255;\n this.gVals[i] = Math.pow(i / 255, gInv) * 255;\n this.bVals[i] = Math.pow(i / 255, bInv) * 255;\n }\n for (i = 0, len = data.length; i < len; i += 4) {\n data[i] = this.rVals[data[i]];\n data[i + 1] = this.gVals[data[i + 1]];\n data[i + 2] = this.bVals[data[i + 2]];\n }\n },\n\n /**\n * Return WebGL uniform locations for this filter's shader.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {WebGLShaderProgram} program This filter's compiled shader program.\n */\n getUniformLocations: function (gl, program) {\n return {\n uGamma: gl.getUniformLocation(program, 'uGamma'),\n };\n },\n\n /**\n * Send data from this filter to its shader program's uniforms.\n *\n * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n */\n sendUniformData: function (gl, uniformLocations) {\n gl.uniform3fv(uniformLocations.uGamma, this.gamma);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.Gamma.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * A container class that knows how to apply a sequence of filters to an input image.\n */\n filters.Composed = createClass(\n filters.BaseFilter,\n /** @lends fabric.Image.filters.Composed.prototype */ {\n type: 'Composed',\n\n /**\n * A non sparse array of filters to apply\n */\n subFilters: [],\n\n /**\n * Constructor\n * @param {Object} [options] Options object\n */\n initialize: function (options) {\n this.callSuper('initialize', options);\n // create a new array instead mutating the prototype with push\n this.subFilters = this.subFilters.slice(0);\n },\n\n /**\n * Apply this container's filters to the input image provided.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be applied.\n */\n applyTo: function (options) {\n options.passes += this.subFilters.length - 1;\n this.subFilters.forEach(function (filter) {\n filter.applyTo(options);\n });\n },\n\n /**\n * Serialize this filter into JSON.\n *\n * @returns {Object} A JSON representation of this filter.\n */\n toObject: function () {\n return fabric.util.object.extend(this.callSuper('toObject'), {\n subFilters: this.subFilters.map(function (filter) {\n return filter.toObject();\n }),\n });\n },\n\n isNeutralState: function () {\n return !this.subFilters.some(function (filter) {\n return !filter.isNeutralState();\n });\n },\n }\n );\n\n /**\n * Deserialize a JSON definition of a ComposedFilter into a concrete instance.\n * @static\n * @param {oject} object Object to create an instance from\n * @param {object} [options]\n * @param {AbortSignal} [options.signal] handle aborting `BlendImage` filter loading, see https://developer.mozilla.org/en-US/docs/Web/API/AbortController/signal\n * @returns {Promise}\n */\n fabric.Image.filters.Composed.fromObject = function (object, options) {\n var filters = object.subFilters || [];\n return Promise.all(\n filters.map(function (filter) {\n return fabric.Image.filters[filter.type].fromObject(filter, options);\n })\n ).then(function (enlivedFilters) {\n return new fabric.Image.filters.Composed({ subFilters: enlivedFilters });\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n 'use strict';\n\n var fabric = global.fabric || (global.fabric = {}),\n filters = fabric.Image.filters,\n createClass = fabric.util.createClass;\n\n /**\n * HueRotation filter class\n * @class fabric.Image.filters.HueRotation\n * @memberOf fabric.Image.filters\n * @extends fabric.Image.filters.BaseFilter\n * @see {@link fabric.Image.filters.HueRotation#initialize} for constructor definition\n * @see {@link http://fabricjs.com/image-filters|ImageFilters demo}\n * @example\n * var filter = new fabric.Image.filters.HueRotation({\n * rotation: -0.5\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n filters.HueRotation = createClass(\n filters.ColorMatrix,\n /** @lends fabric.Image.filters.HueRotation.prototype */ {\n /**\n * Filter type\n * @param {String} type\n * @default\n */\n type: 'HueRotation',\n\n /**\n * HueRotation value, from -1 to 1.\n * the unit is radians\n * @param {Number} myParameter\n * @default\n */\n rotation: 0,\n\n /**\n * Describe the property that is the filter parameter\n * @param {String} m\n * @default\n */\n mainParameter: 'rotation',\n\n calculateMatrix: function () {\n var rad = this.rotation * Math.PI,\n cos = fabric.util.cos(rad),\n sin = fabric.util.sin(rad),\n aThird = 1 / 3,\n aThirdSqtSin = Math.sqrt(aThird) * sin,\n OneMinusCos = 1 - cos;\n this.matrix = [\n 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0,\n ];\n this.matrix[0] = cos + OneMinusCos / 3;\n this.matrix[1] = aThird * OneMinusCos - aThirdSqtSin;\n this.matrix[2] = aThird * OneMinusCos + aThirdSqtSin;\n this.matrix[5] = aThird * OneMinusCos + aThirdSqtSin;\n this.matrix[6] = cos + aThird * OneMinusCos;\n this.matrix[7] = aThird * OneMinusCos - aThirdSqtSin;\n this.matrix[10] = aThird * OneMinusCos - aThirdSqtSin;\n this.matrix[11] = aThird * OneMinusCos + aThirdSqtSin;\n this.matrix[12] = cos + aThird * OneMinusCos;\n },\n\n /**\n * HueRotation isNeutralState implementation\n * Used only in image applyFilters to discard filters that will not have an effect\n * on the image\n * @param {Object} options\n **/\n isNeutralState: function (options) {\n this.calculateMatrix();\n return filters.BaseFilter.prototype.isNeutralState.call(this, options);\n },\n\n /**\n * Apply this filter to the input image data provided.\n *\n * Determines whether to use WebGL or Canvas2D based on the options.webgl flag.\n *\n * @param {Object} options\n * @param {Number} options.passes The number of filters remaining to be executed\n * @param {Boolean} options.webgl Whether to use webgl to render the filter.\n * @param {WebGLTexture} options.sourceTexture The texture setup as the source to be filtered.\n * @param {WebGLTexture} options.targetTexture The texture where filtered output should be drawn.\n * @param {WebGLRenderingContext} options.context The GL context used for rendering.\n * @param {Object} options.programCache A map of compiled shader programs, keyed by filter type.\n */\n applyTo: function (options) {\n this.calculateMatrix();\n filters.BaseFilter.prototype.applyTo.call(this, options);\n },\n }\n );\n\n /**\n * Create filter instance from an object representation\n * @static\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Image.filters.HueRotation.fromObject =\n fabric.Image.filters.BaseFilter.fromObject;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { cache } from '../cache';\nimport { DEFAULT_SVG_FONT_SIZE } from '../constants';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n\n var additionalProps = (\n 'fontFamily fontWeight fontSize text underline overline linethrough' +\n ' textAlign fontStyle lineHeight textBackgroundColor charSpacing styles' +\n ' direction path pathStartOffset pathSide pathAlign'\n ).split(' ');\n\n /**\n * Text class\n * @class fabric.Text\n * @extends fabric.Object\n * @return {fabric.Text} thisArg\n * @tutorial {@link http://fabricjs.com/fabric-intro-part-2#text}\n * @see {@link fabric.Text#initialize} for constructor definition\n */\n fabric.Text = fabric.util.createClass(\n fabric.Object,\n /** @lends fabric.Text.prototype */ {\n /**\n * Properties which when set cause object to change dimensions\n * @type Array\n * @private\n */\n _dimensionAffectingProps: [\n 'fontSize',\n 'fontWeight',\n 'fontFamily',\n 'fontStyle',\n 'lineHeight',\n 'text',\n 'charSpacing',\n 'textAlign',\n 'styles',\n 'path',\n 'pathStartOffset',\n 'pathSide',\n 'pathAlign',\n ],\n\n /**\n * @private\n */\n _reNewline: /\\r?\\n/,\n\n /**\n * Use this regular expression to filter for whitespaces that is not a new line.\n * Mostly used when text is 'justify' aligned.\n * @private\n */\n _reSpacesAndTabs: /[ \\t\\r]/g,\n\n /**\n * Use this regular expression to filter for whitespace that is not a new line.\n * Mostly used when text is 'justify' aligned.\n * @private\n */\n _reSpaceAndTab: /[ \\t\\r]/,\n\n /**\n * Use this regular expression to filter consecutive groups of non spaces.\n * Mostly used when text is 'justify' aligned.\n * @private\n */\n _reWords: /\\S+/g,\n\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'text',\n\n /**\n * Font size (in pixels)\n * @type Number\n * @default\n */\n fontSize: 40,\n\n /**\n * Font weight (e.g. bold, normal, 400, 600, 800)\n * @type {(Number|String)}\n * @default\n */\n fontWeight: 'normal',\n\n /**\n * Font family\n * @type String\n * @default\n */\n fontFamily: 'Times New Roman',\n\n /**\n * Text decoration underline.\n * @type Boolean\n * @default\n */\n underline: false,\n\n /**\n * Text decoration overline.\n * @type Boolean\n * @default\n */\n overline: false,\n\n /**\n * Text decoration linethrough.\n * @type Boolean\n * @default\n */\n linethrough: false,\n\n /**\n * Text alignment. Possible values: \"left\", \"center\", \"right\", \"justify\",\n * \"justify-left\", \"justify-center\" or \"justify-right\".\n * @type String\n * @default\n */\n textAlign: 'left',\n\n /**\n * Font style . Possible values: \"\", \"normal\", \"italic\" or \"oblique\".\n * @type String\n * @default\n */\n fontStyle: 'normal',\n\n /**\n * Line height\n * @type Number\n * @default\n */\n lineHeight: 1.16,\n\n /**\n * Superscript schema object (minimum overlap)\n * @type {Object}\n * @default\n */\n superscript: {\n size: 0.6, // fontSize factor\n baseline: -0.35, // baseline-shift factor (upwards)\n },\n\n /**\n * Subscript schema object (minimum overlap)\n * @type {Object}\n * @default\n */\n subscript: {\n size: 0.6, // fontSize factor\n baseline: 0.11, // baseline-shift factor (downwards)\n },\n\n /**\n * Background color of text lines\n * @type String\n * @default\n */\n textBackgroundColor: '',\n\n /**\n * List of properties to consider when checking if\n * state of an object is changed ({@link fabric.Object#hasStateChanged})\n * as well as for history (undo/redo) purposes\n * @type Array\n */\n stateProperties:\n fabric.Object.prototype.stateProperties.concat(additionalProps),\n\n /**\n * List of properties to consider when checking if cache needs refresh\n * @type Array\n */\n cacheProperties:\n fabric.Object.prototype.cacheProperties.concat(additionalProps),\n\n /**\n * When defined, an object is rendered via stroke and this property specifies its color.\n * Backwards incompatibility note: This property was named \"strokeStyle\" until v1.1.6\n * @type String\n * @default\n */\n stroke: null,\n\n /**\n * Shadow object representing shadow of this shape.\n * Backwards incompatibility note: This property was named \"textShadow\" (String) until v1.2.11\n * @type fabric.Shadow\n * @default\n */\n shadow: null,\n\n /**\n * fabric.Path that the text should follow.\n * since 4.6.0 the path will be drawn automatically.\n * if you want to make the path visible, give it a stroke and strokeWidth or fill value\n * if you want it to be hidden, assign visible = false to the path.\n * This feature is in BETA, and SVG import/export is not yet supported.\n * @type fabric.Path\n * @example\n * var textPath = new fabric.Text('Text on a path', {\n * top: 150,\n * left: 150,\n * textAlign: 'center',\n * charSpacing: -50,\n * path: new fabric.Path('M 0 0 C 50 -100 150 -100 200 0', {\n * strokeWidth: 1,\n * visible: false\n * }),\n * pathSide: 'left',\n * pathStartOffset: 0\n * });\n * @default\n */\n path: null,\n\n /**\n * Offset amount for text path starting position\n * Only used when text has a path\n * @type Number\n * @default\n */\n pathStartOffset: 0,\n\n /**\n * Which side of the path the text should be drawn on.\n * Only used when text has a path\n * @type {String} 'left|right'\n * @default\n */\n pathSide: 'left',\n\n /**\n * How text is aligned to the path. This property determines\n * the perpendicular position of each character relative to the path.\n * (one of \"baseline\", \"center\", \"ascender\", \"descender\")\n * This feature is in BETA, and its behavior may change\n * @type String\n * @default\n */\n pathAlign: 'baseline',\n\n /**\n * @private\n */\n _fontSizeFraction: 0.222,\n\n /**\n * @private\n */\n offsets: {\n underline: 0.1,\n linethrough: -0.315,\n overline: -0.88,\n },\n\n /**\n * Text Line proportion to font Size (in pixels)\n * @type Number\n * @default\n */\n _fontSizeMult: 1.13,\n\n /**\n * additional space between characters\n * expressed in thousands of em unit\n * @type Number\n * @default\n */\n charSpacing: 0,\n\n /**\n * Object containing character styles - top-level properties -> line numbers,\n * 2nd-level properties - character numbers\n * @type Object\n * @default\n */\n styles: null,\n\n /**\n * Reference to a context to measure text char or couple of chars\n * the cacheContext of the canvas will be used or a freshly created one if the object is not on canvas\n * once created it will be referenced on fabric._measuringContext to avoid creating a canvas for every\n * text object created.\n * @type {CanvasRenderingContext2D}\n * @default\n */\n _measuringContext: null,\n\n /**\n * Baseline shift, styles only, keep at 0 for the main text object\n * @type {Number}\n * @default\n */\n deltaY: 0,\n\n /**\n * WARNING: EXPERIMENTAL. NOT SUPPORTED YET\n * determine the direction of the text.\n * This has to be set manually together with textAlign and originX for proper\n * experience.\n * some interesting link for the future\n * https://www.w3.org/International/questions/qa-bidi-unicode-controls\n * @since 4.5.0\n * @type {String} 'ltr|rtl'\n * @default\n */\n direction: 'ltr',\n\n /**\n * Array of properties that define a style unit (of 'styles').\n * @type {Array}\n * @default\n */\n _styleProperties: [\n 'stroke',\n 'strokeWidth',\n 'fill',\n 'fontFamily',\n 'fontSize',\n 'fontWeight',\n 'fontStyle',\n 'underline',\n 'overline',\n 'linethrough',\n 'deltaY',\n 'textBackgroundColor',\n ],\n\n /**\n * contains characters bounding boxes\n */\n __charBounds: [],\n\n /**\n * use this size when measuring text. To avoid IE11 rounding errors\n * @type {Number}\n * @default\n * @readonly\n * @private\n */\n CACHE_FONT_SIZE: 400,\n\n /**\n * contains the min text width to avoid getting 0\n * @type {Number}\n * @default\n */\n MIN_TEXT_WIDTH: 2,\n\n /**\n * Constructor\n * @param {String} text Text string\n * @param {Object} [options] Options object\n * @return {fabric.Text} thisArg\n */\n initialize: function (text, options) {\n this.styles = options ? options.styles || {} : {};\n this.text = text;\n this.__skipDimension = true;\n this.callSuper('initialize', options);\n if (this.path) {\n this.setPathInfo();\n }\n this.__skipDimension = false;\n this.initDimensions();\n this.setCoords();\n this.setupState({ propertySet: '_dimensionAffectingProps' });\n },\n\n /**\n * If text has a path, it will add the extra information needed\n * for path and text calculations\n * @return {fabric.Text} thisArg\n */\n setPathInfo: function () {\n var path = this.path;\n if (path) {\n path.segmentsInfo = fabric.util.getPathSegmentsInfo(path.path);\n }\n },\n\n /**\n * Return a context for measurement of text string.\n * if created it gets stored for reuse\n * this is for internal use, please do not use it\n * @private\n * @param {String} text Text string\n * @param {Object} [options] Options object\n * @return {fabric.Text} thisArg\n */\n getMeasuringContext: function () {\n // if we did not return we have to measure something.\n if (!fabric._measuringContext) {\n fabric._measuringContext =\n (this.canvas && this.canvas.contextCache) ||\n fabric.util.createCanvasElement().getContext('2d');\n }\n return fabric._measuringContext;\n },\n\n /**\n * @private\n * Divides text into lines of text and lines of graphemes.\n */\n _splitText: function () {\n var newLines = this._splitTextIntoLines(this.text);\n this.textLines = newLines.lines;\n this._textLines = newLines.graphemeLines;\n this._unwrappedTextLines = newLines._unwrappedLines;\n this._text = newLines.graphemeText;\n return newLines;\n },\n\n /**\n * Initialize or update text dimensions.\n * Updates this.width and this.height with the proper values.\n * Does not return dimensions.\n */\n initDimensions: function () {\n if (this.__skipDimension) {\n return;\n }\n this._splitText();\n this._clearCache();\n if (this.path) {\n this.width = this.path.width;\n this.height = this.path.height;\n } else {\n this.width =\n this.calcTextWidth() || this.cursorWidth || this.MIN_TEXT_WIDTH;\n this.height = this.calcTextHeight();\n }\n if (this.textAlign.indexOf('justify') !== -1) {\n // once text is measured we need to make space fatter to make justified text.\n this.enlargeSpaces();\n }\n this.saveState({ propertySet: '_dimensionAffectingProps' });\n },\n\n /**\n * Enlarge space boxes and shift the others\n */\n enlargeSpaces: function () {\n var diffSpace,\n currentLineWidth,\n numberOfSpaces,\n accumulatedSpace,\n line,\n charBound,\n spaces;\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n if (\n this.textAlign !== 'justify' &&\n (i === len - 1 || this.isEndOfWrapping(i))\n ) {\n continue;\n }\n accumulatedSpace = 0;\n line = this._textLines[i];\n currentLineWidth = this.getLineWidth(i);\n if (\n currentLineWidth < this.width &&\n (spaces = this.textLines[i].match(this._reSpacesAndTabs))\n ) {\n numberOfSpaces = spaces.length;\n diffSpace = (this.width - currentLineWidth) / numberOfSpaces;\n for (var j = 0, jlen = line.length; j <= jlen; j++) {\n charBound = this.__charBounds[i][j];\n if (this._reSpaceAndTab.test(line[j])) {\n charBound.width += diffSpace;\n charBound.kernedWidth += diffSpace;\n charBound.left += accumulatedSpace;\n accumulatedSpace += diffSpace;\n } else {\n charBound.left += accumulatedSpace;\n }\n }\n }\n }\n },\n\n /**\n * Detect if the text line is ended with an hard break\n * text and itext do not have wrapping, return false\n * @return {Boolean}\n */\n isEndOfWrapping: function (lineIndex) {\n return lineIndex === this._textLines.length - 1;\n },\n\n /**\n * Detect if a line has a linebreak and so we need to account for it when moving\n * and counting style.\n * It return always for text and Itext.\n * @return Number\n */\n missingNewlineOffset: function () {\n return 1;\n },\n\n /**\n * Returns string representation of an instance\n * @return {String} String representation of text object\n */\n toString: function () {\n return (\n '#'\n );\n },\n\n /**\n * Return the dimension and the zoom level needed to create a cache canvas\n * big enough to host the object to be cached.\n * @private\n * @param {Object} dim.x width of object to be cached\n * @param {Object} dim.y height of object to be cached\n * @return {Object}.width width of canvas\n * @return {Object}.height height of canvas\n * @return {Object}.zoomX zoomX zoom value to unscale the canvas before drawing cache\n * @return {Object}.zoomY zoomY zoom value to unscale the canvas before drawing cache\n */\n _getCacheCanvasDimensions: function () {\n var dims = this.callSuper('_getCacheCanvasDimensions');\n var fontSize = this.fontSize;\n dims.width += fontSize * dims.zoomX;\n dims.height += fontSize * dims.zoomY;\n return dims;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n var path = this.path;\n path && !path.isNotVisible() && path._render(ctx);\n this._setTextStyles(ctx);\n this._renderTextLinesBackground(ctx);\n this._renderTextDecoration(ctx, 'underline');\n this._renderText(ctx);\n this._renderTextDecoration(ctx, 'overline');\n this._renderTextDecoration(ctx, 'linethrough');\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderText: function (ctx) {\n if (this.paintFirst === 'stroke') {\n this._renderTextStroke(ctx);\n this._renderTextFill(ctx);\n } else {\n this._renderTextFill(ctx);\n this._renderTextStroke(ctx);\n }\n },\n\n /**\n * Set the font parameter of the context with the object properties or with charStyle\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Object} [charStyle] object with font style properties\n * @param {String} [charStyle.fontFamily] Font Family\n * @param {Number} [charStyle.fontSize] Font size in pixels. ( without px suffix )\n * @param {String} [charStyle.fontWeight] Font weight\n * @param {String} [charStyle.fontStyle] Font style (italic|normal)\n */\n _setTextStyles: function (ctx, charStyle, forMeasuring) {\n ctx.textBaseline = 'alphabetical';\n if (this.path) {\n switch (this.pathAlign) {\n case 'center':\n ctx.textBaseline = 'middle';\n break;\n case 'ascender':\n ctx.textBaseline = 'top';\n break;\n case 'descender':\n ctx.textBaseline = 'bottom';\n break;\n }\n }\n ctx.font = this._getFontDeclaration(charStyle, forMeasuring);\n },\n\n /**\n * calculate and return the text Width measuring each line.\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @return {Number} Maximum width of fabric.Text object\n */\n calcTextWidth: function () {\n var maxWidth = this.getLineWidth(0);\n\n for (var i = 1, len = this._textLines.length; i < len; i++) {\n var currentLineWidth = this.getLineWidth(i);\n if (currentLineWidth > maxWidth) {\n maxWidth = currentLineWidth;\n }\n }\n return maxWidth;\n },\n\n /**\n * @private\n * @param {String} method Method name (\"fillText\" or \"strokeText\")\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {String} line Text to render\n * @param {Number} left Left position of text\n * @param {Number} top Top position of text\n * @param {Number} lineIndex Index of a line in a text\n */\n _renderTextLine: function (method, ctx, line, left, top, lineIndex) {\n this._renderChars(method, ctx, line, left, top, lineIndex);\n },\n\n /**\n * Renders the text background for lines, taking care of style\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderTextLinesBackground: function (ctx) {\n if (\n !this.textBackgroundColor &&\n !this.styleHas('textBackgroundColor')\n ) {\n return;\n }\n var heightOfLine,\n lineLeftOffset,\n originalFill = ctx.fillStyle,\n line,\n lastColor,\n leftOffset = this._getLeftOffset(),\n lineTopOffset = this._getTopOffset(),\n boxStart = 0,\n boxWidth = 0,\n charBox,\n currentColor,\n path = this.path,\n drawStart;\n\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n heightOfLine = this.getHeightOfLine(i);\n if (\n !this.textBackgroundColor &&\n !this.styleHas('textBackgroundColor', i)\n ) {\n lineTopOffset += heightOfLine;\n continue;\n }\n line = this._textLines[i];\n lineLeftOffset = this._getLineLeftOffset(i);\n boxWidth = 0;\n boxStart = 0;\n lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor');\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n charBox = this.__charBounds[i][j];\n currentColor = this.getValueOfPropertyAt(\n i,\n j,\n 'textBackgroundColor'\n );\n if (path) {\n ctx.save();\n ctx.translate(charBox.renderLeft, charBox.renderTop);\n ctx.rotate(charBox.angle);\n ctx.fillStyle = currentColor;\n currentColor &&\n ctx.fillRect(\n -charBox.width / 2,\n (-heightOfLine / this.lineHeight) *\n (1 - this._fontSizeFraction),\n charBox.width,\n heightOfLine / this.lineHeight\n );\n ctx.restore();\n } else if (currentColor !== lastColor) {\n drawStart = leftOffset + lineLeftOffset + boxStart;\n if (this.direction === 'rtl') {\n drawStart = this.width - drawStart - boxWidth;\n }\n ctx.fillStyle = lastColor;\n lastColor &&\n ctx.fillRect(\n drawStart,\n lineTopOffset,\n boxWidth,\n heightOfLine / this.lineHeight\n );\n boxStart = charBox.left;\n boxWidth = charBox.width;\n lastColor = currentColor;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n }\n if (currentColor && !path) {\n drawStart = leftOffset + lineLeftOffset + boxStart;\n if (this.direction === 'rtl') {\n drawStart = this.width - drawStart - boxWidth;\n }\n ctx.fillStyle = currentColor;\n ctx.fillRect(\n drawStart,\n lineTopOffset,\n boxWidth,\n heightOfLine / this.lineHeight\n );\n }\n lineTopOffset += heightOfLine;\n }\n ctx.fillStyle = originalFill;\n // if there is text background color no\n // other shadows should be casted\n this._removeShadow(ctx);\n },\n\n /**\n * measure and return the width of a single character.\n * possibly overridden to accommodate different measure logic or\n * to hook some external lib for character measurement\n * @private\n * @param {String} _char, char to be measured\n * @param {Object} charStyle style of char to be measured\n * @param {String} [previousChar] previous char\n * @param {Object} [prevCharStyle] style of previous char\n */\n _measureChar: function (_char, charStyle, previousChar, prevCharStyle) {\n // first i try to return from cache\n var fontCache = cache.getFontCache(charStyle),\n fontDeclaration = this._getFontDeclaration(charStyle),\n previousFontDeclaration = this._getFontDeclaration(prevCharStyle),\n couple = previousChar + _char,\n stylesAreEqual = fontDeclaration === previousFontDeclaration,\n width,\n coupleWidth,\n previousWidth,\n fontMultiplier = charStyle.fontSize / this.CACHE_FONT_SIZE,\n kernedWidth;\n\n if (previousChar && fontCache[previousChar] !== undefined) {\n previousWidth = fontCache[previousChar];\n }\n if (fontCache[_char] !== undefined) {\n kernedWidth = width = fontCache[_char];\n }\n if (stylesAreEqual && fontCache[couple] !== undefined) {\n coupleWidth = fontCache[couple];\n kernedWidth = coupleWidth - previousWidth;\n }\n if (\n width === undefined ||\n previousWidth === undefined ||\n coupleWidth === undefined\n ) {\n var ctx = this.getMeasuringContext();\n // send a TRUE to specify measuring font size CACHE_FONT_SIZE\n this._setTextStyles(ctx, charStyle, true);\n }\n if (width === undefined) {\n kernedWidth = width = ctx.measureText(_char).width;\n fontCache[_char] = width;\n }\n if (previousWidth === undefined && stylesAreEqual && previousChar) {\n previousWidth = ctx.measureText(previousChar).width;\n fontCache[previousChar] = previousWidth;\n }\n if (stylesAreEqual && coupleWidth === undefined) {\n // we can measure the kerning couple and subtract the width of the previous character\n coupleWidth = ctx.measureText(couple).width;\n fontCache[couple] = coupleWidth;\n kernedWidth = coupleWidth - previousWidth;\n }\n return {\n width: width * fontMultiplier,\n kernedWidth: kernedWidth * fontMultiplier,\n };\n },\n\n /**\n * Computes height of character at given position\n * @param {Number} line the line index number\n * @param {Number} _char the character index number\n * @return {Number} fontSize of the character\n */\n getHeightOfChar: function (line, _char) {\n return this.getValueOfPropertyAt(line, _char, 'fontSize');\n },\n\n /**\n * measure a text line measuring all characters.\n * @param {Number} lineIndex line number\n * @return {Number} Line width\n */\n measureLine: function (lineIndex) {\n var lineInfo = this._measureLine(lineIndex);\n if (this.charSpacing !== 0) {\n lineInfo.width -= this._getWidthOfCharSpacing();\n }\n if (lineInfo.width < 0) {\n lineInfo.width = 0;\n }\n return lineInfo;\n },\n\n /**\n * measure every grapheme of a line, populating __charBounds\n * @param {Number} lineIndex\n * @return {Object} object.width total width of characters\n * @return {Object} object.widthOfSpaces length of chars that match this._reSpacesAndTabs\n */\n _measureLine: function (lineIndex) {\n var width = 0,\n i,\n grapheme,\n line = this._textLines[lineIndex],\n prevGrapheme,\n graphemeInfo,\n numOfSpaces = 0,\n lineBounds = new Array(line.length),\n positionInPath = 0,\n startingPoint,\n totalPathLength,\n path = this.path,\n reverse = this.pathSide === 'right';\n\n this.__charBounds[lineIndex] = lineBounds;\n for (i = 0; i < line.length; i++) {\n grapheme = line[i];\n graphemeInfo = this._getGraphemeBox(\n grapheme,\n lineIndex,\n i,\n prevGrapheme\n );\n lineBounds[i] = graphemeInfo;\n width += graphemeInfo.kernedWidth;\n prevGrapheme = grapheme;\n }\n // this latest bound box represent the last character of the line\n // to simplify cursor handling in interactive mode.\n lineBounds[i] = {\n left: graphemeInfo ? graphemeInfo.left + graphemeInfo.width : 0,\n width: 0,\n kernedWidth: 0,\n height: this.fontSize,\n };\n if (path) {\n totalPathLength =\n path.segmentsInfo[path.segmentsInfo.length - 1].length;\n startingPoint = fabric.util.getPointOnPath(\n path.path,\n 0,\n path.segmentsInfo\n );\n startingPoint.x += path.pathOffset.x;\n startingPoint.y += path.pathOffset.y;\n switch (this.textAlign) {\n case 'left':\n positionInPath = reverse ? totalPathLength - width : 0;\n break;\n case 'center':\n positionInPath = (totalPathLength - width) / 2;\n break;\n case 'right':\n positionInPath = reverse ? 0 : totalPathLength - width;\n break;\n //todo - add support for justify\n }\n positionInPath += this.pathStartOffset * (reverse ? -1 : 1);\n for (\n i = reverse ? line.length - 1 : 0;\n reverse ? i >= 0 : i < line.length;\n reverse ? i-- : i++\n ) {\n graphemeInfo = lineBounds[i];\n if (positionInPath > totalPathLength) {\n positionInPath %= totalPathLength;\n } else if (positionInPath < 0) {\n positionInPath += totalPathLength;\n }\n // it would probably much faster to send all the grapheme position for a line\n // and calculate path position/angle at once.\n this._setGraphemeOnPath(\n positionInPath,\n graphemeInfo,\n startingPoint\n );\n positionInPath += graphemeInfo.kernedWidth;\n }\n }\n return { width: width, numOfSpaces: numOfSpaces };\n },\n\n /**\n * Calculate the angle and the left,top position of the char that follow a path.\n * It appends it to graphemeInfo to be reused later at rendering\n * @private\n * @param {Number} positionInPath to be measured\n * @param {Object} graphemeInfo current grapheme box information\n * @param {Object} startingPoint position of the point\n */\n _setGraphemeOnPath: function (\n positionInPath,\n graphemeInfo,\n startingPoint\n ) {\n var centerPosition = positionInPath + graphemeInfo.kernedWidth / 2,\n path = this.path;\n\n // we are at currentPositionOnPath. we want to know what point on the path is.\n var info = fabric.util.getPointOnPath(\n path.path,\n centerPosition,\n path.segmentsInfo\n );\n graphemeInfo.renderLeft = info.x - startingPoint.x;\n graphemeInfo.renderTop = info.y - startingPoint.y;\n graphemeInfo.angle =\n info.angle + (this.pathSide === 'right' ? Math.PI : 0);\n },\n\n /**\n * Measure and return the info of a single grapheme.\n * needs the the info of previous graphemes already filled\n * Override to customize measuring\n *\n * @typedef {object} GraphemeBBox\n * @property {number} width\n * @property {number} height\n * @property {number} kernedWidth\n * @property {number} left\n * @property {number} deltaY\n *\n * @param {String} grapheme to be measured\n * @param {Number} lineIndex index of the line where the char is\n * @param {Number} charIndex position in the line\n * @param {String} [prevGrapheme] character preceding the one to be measured\n * @returns {GraphemeBBox} grapheme bbox\n */\n _getGraphemeBox: function (\n grapheme,\n lineIndex,\n charIndex,\n prevGrapheme,\n skipLeft\n ) {\n var style = this.getCompleteStyleDeclaration(lineIndex, charIndex),\n prevStyle = prevGrapheme\n ? this.getCompleteStyleDeclaration(lineIndex, charIndex - 1)\n : {},\n info = this._measureChar(grapheme, style, prevGrapheme, prevStyle),\n kernedWidth = info.kernedWidth,\n width = info.width,\n charSpacing;\n\n if (this.charSpacing !== 0) {\n charSpacing = this._getWidthOfCharSpacing();\n width += charSpacing;\n kernedWidth += charSpacing;\n }\n\n var box = {\n width: width,\n left: 0,\n height: style.fontSize,\n kernedWidth: kernedWidth,\n deltaY: style.deltaY,\n };\n if (charIndex > 0 && !skipLeft) {\n var previousBox = this.__charBounds[lineIndex][charIndex - 1];\n box.left =\n previousBox.left +\n previousBox.width +\n info.kernedWidth -\n info.width;\n }\n return box;\n },\n\n /**\n * Calculate height of line at 'lineIndex'\n * @param {Number} lineIndex index of line to calculate\n * @return {Number}\n */\n getHeightOfLine: function (lineIndex) {\n if (this.__lineHeights[lineIndex]) {\n return this.__lineHeights[lineIndex];\n }\n\n var line = this._textLines[lineIndex],\n // char 0 is measured before the line cycle because it nneds to char\n // emptylines\n maxHeight = this.getHeightOfChar(lineIndex, 0);\n for (var i = 1, len = line.length; i < len; i++) {\n maxHeight = Math.max(this.getHeightOfChar(lineIndex, i), maxHeight);\n }\n\n return (this.__lineHeights[lineIndex] =\n maxHeight * this.lineHeight * this._fontSizeMult);\n },\n\n /**\n * Calculate text box height\n */\n calcTextHeight: function () {\n var lineHeight,\n height = 0;\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n lineHeight = this.getHeightOfLine(i);\n height += i === len - 1 ? lineHeight / this.lineHeight : lineHeight;\n }\n return height;\n },\n\n /**\n * @private\n * @return {Number} Left offset\n */\n _getLeftOffset: function () {\n return this.direction === 'ltr' ? -this.width / 2 : this.width / 2;\n },\n\n /**\n * @private\n * @return {Number} Top offset\n */\n _getTopOffset: function () {\n return -this.height / 2;\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {String} method Method name (\"fillText\" or \"strokeText\")\n */\n _renderTextCommon: function (ctx, method) {\n ctx.save();\n var lineHeights = 0,\n left = this._getLeftOffset(),\n top = this._getTopOffset();\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n var heightOfLine = this.getHeightOfLine(i),\n maxHeight = heightOfLine / this.lineHeight,\n leftOffset = this._getLineLeftOffset(i);\n this._renderTextLine(\n method,\n ctx,\n this._textLines[i],\n left + leftOffset,\n top + lineHeights + maxHeight,\n i\n );\n lineHeights += heightOfLine;\n }\n ctx.restore();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderTextFill: function (ctx) {\n if (!this.fill && !this.styleHas('fill')) {\n return;\n }\n\n this._renderTextCommon(ctx, 'fillText');\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderTextStroke: function (ctx) {\n if ((!this.stroke || this.strokeWidth === 0) && this.isEmptyStyles()) {\n return;\n }\n\n if (this.shadow && !this.shadow.affectStroke) {\n this._removeShadow(ctx);\n }\n\n ctx.save();\n this._setLineDash(ctx, this.strokeDashArray);\n ctx.beginPath();\n this._renderTextCommon(ctx, 'strokeText');\n ctx.closePath();\n ctx.restore();\n },\n\n /**\n * @private\n * @param {String} method fillText or strokeText.\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Array} line Content of the line, splitted in an array by grapheme\n * @param {Number} left\n * @param {Number} top\n * @param {Number} lineIndex\n */\n _renderChars: function (method, ctx, line, left, top, lineIndex) {\n // set proper line offset\n var lineHeight = this.getHeightOfLine(lineIndex),\n isJustify = this.textAlign.indexOf('justify') !== -1,\n actualStyle,\n nextStyle,\n charsToRender = '',\n charBox,\n boxWidth = 0,\n timeToRender,\n path = this.path,\n shortCut =\n !isJustify &&\n this.charSpacing === 0 &&\n this.isEmptyStyles(lineIndex) &&\n !path,\n isLtr = this.direction === 'ltr',\n sign = this.direction === 'ltr' ? 1 : -1,\n // this was changed in the PR #7674\n // currentDirection = ctx.canvas.getAttribute('dir');\n drawingLeft,\n currentDirection = ctx.direction;\n ctx.save();\n if (currentDirection !== this.direction) {\n ctx.canvas.setAttribute('dir', isLtr ? 'ltr' : 'rtl');\n ctx.direction = isLtr ? 'ltr' : 'rtl';\n ctx.textAlign = isLtr ? 'left' : 'right';\n }\n top -= (lineHeight * this._fontSizeFraction) / this.lineHeight;\n if (shortCut) {\n // render all the line in one pass without checking\n // drawingLeft = isLtr ? left : left - this.getLineWidth(lineIndex);\n this._renderChar(\n method,\n ctx,\n lineIndex,\n 0,\n line.join(''),\n left,\n top,\n lineHeight\n );\n ctx.restore();\n return;\n }\n for (var i = 0, len = line.length - 1; i <= len; i++) {\n timeToRender = i === len || this.charSpacing || path;\n charsToRender += line[i];\n charBox = this.__charBounds[lineIndex][i];\n if (boxWidth === 0) {\n left += sign * (charBox.kernedWidth - charBox.width);\n boxWidth += charBox.width;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n if (isJustify && !timeToRender) {\n if (this._reSpaceAndTab.test(line[i])) {\n timeToRender = true;\n }\n }\n if (!timeToRender) {\n // if we have charSpacing, we render char by char\n actualStyle =\n actualStyle || this.getCompleteStyleDeclaration(lineIndex, i);\n nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1);\n timeToRender = fabric.util.hasStyleChanged(\n actualStyle,\n nextStyle,\n false\n );\n }\n if (timeToRender) {\n if (path) {\n ctx.save();\n ctx.translate(charBox.renderLeft, charBox.renderTop);\n ctx.rotate(charBox.angle);\n this._renderChar(\n method,\n ctx,\n lineIndex,\n i,\n charsToRender,\n -boxWidth / 2,\n 0,\n lineHeight\n );\n ctx.restore();\n } else {\n drawingLeft = left;\n this._renderChar(\n method,\n ctx,\n lineIndex,\n i,\n charsToRender,\n drawingLeft,\n top,\n lineHeight\n );\n }\n charsToRender = '';\n actualStyle = nextStyle;\n left += sign * boxWidth;\n boxWidth = 0;\n }\n }\n ctx.restore();\n },\n\n /**\n * This function try to patch the missing gradientTransform on canvas gradients.\n * transforming a context to transform the gradient, is going to transform the stroke too.\n * we want to transform the gradient but not the stroke operation, so we create\n * a transformed gradient on a pattern and then we use the pattern instead of the gradient.\n * this method has drawbacks: is slow, is in low resolution, needs a patch for when the size\n * is limited.\n * @private\n * @param {fabric.Gradient} filler a fabric gradient instance\n * @return {CanvasPattern} a pattern to use as fill/stroke style\n */\n _applyPatternGradientTransformText: function (filler) {\n var pCanvas = fabric.util.createCanvasElement(),\n pCtx,\n // TODO: verify compatibility with strokeUniform\n width = this.width + this.strokeWidth,\n height = this.height + this.strokeWidth;\n pCanvas.width = width;\n pCanvas.height = height;\n pCtx = pCanvas.getContext('2d');\n pCtx.beginPath();\n pCtx.moveTo(0, 0);\n pCtx.lineTo(width, 0);\n pCtx.lineTo(width, height);\n pCtx.lineTo(0, height);\n pCtx.closePath();\n pCtx.translate(width / 2, height / 2);\n pCtx.fillStyle = filler.toLive(pCtx);\n this._applyPatternGradientTransform(pCtx, filler);\n pCtx.fill();\n return pCtx.createPattern(pCanvas, 'no-repeat');\n },\n\n handleFiller: function (ctx, property, filler) {\n var offsetX, offsetY;\n if (filler.toLive) {\n if (\n filler.gradientUnits === 'percentage' ||\n filler.gradientTransform ||\n filler.patternTransform\n ) {\n // need to transform gradient in a pattern.\n // this is a slow process. If you are hitting this codepath, and the object\n // is not using caching, you should consider switching it on.\n // we need a canvas as big as the current object caching canvas.\n offsetX = -this.width / 2;\n offsetY = -this.height / 2;\n ctx.translate(offsetX, offsetY);\n ctx[property] = this._applyPatternGradientTransformText(filler);\n return { offsetX: offsetX, offsetY: offsetY };\n } else {\n // is a simple gradient or pattern\n ctx[property] = filler.toLive(ctx, this);\n return this._applyPatternGradientTransform(ctx, filler);\n }\n } else {\n // is a color\n ctx[property] = filler;\n }\n return { offsetX: 0, offsetY: 0 };\n },\n\n _setStrokeStyles: function (ctx, decl) {\n ctx.lineWidth = decl.strokeWidth;\n ctx.lineCap = this.strokeLineCap;\n ctx.lineDashOffset = this.strokeDashOffset;\n ctx.lineJoin = this.strokeLineJoin;\n ctx.miterLimit = this.strokeMiterLimit;\n return this.handleFiller(ctx, 'strokeStyle', decl.stroke);\n },\n\n _setFillStyles: function (ctx, decl) {\n return this.handleFiller(ctx, 'fillStyle', decl.fill);\n },\n\n /**\n * @private\n * @param {String} method\n * @param {CanvasRenderingContext2D} ctx Context to render on\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @param {String} _char\n * @param {Number} left Left coordinate\n * @param {Number} top Top coordinate\n * @param {Number} lineHeight Height of the line\n */\n _renderChar: function (\n method,\n ctx,\n lineIndex,\n charIndex,\n _char,\n left,\n top\n ) {\n var decl = this._getStyleDeclaration(lineIndex, charIndex),\n fullDecl = this.getCompleteStyleDeclaration(lineIndex, charIndex),\n shouldFill = method === 'fillText' && fullDecl.fill,\n shouldStroke =\n method === 'strokeText' && fullDecl.stroke && fullDecl.strokeWidth,\n fillOffsets,\n strokeOffsets;\n\n if (!shouldStroke && !shouldFill) {\n return;\n }\n ctx.save();\n\n shouldFill && (fillOffsets = this._setFillStyles(ctx, fullDecl));\n shouldStroke && (strokeOffsets = this._setStrokeStyles(ctx, fullDecl));\n\n ctx.font = this._getFontDeclaration(fullDecl);\n\n if (decl && decl.textBackgroundColor) {\n this._removeShadow(ctx);\n }\n if (decl && decl.deltaY) {\n top += decl.deltaY;\n }\n shouldFill &&\n ctx.fillText(\n _char,\n left - fillOffsets.offsetX,\n top - fillOffsets.offsetY\n );\n shouldStroke &&\n ctx.strokeText(\n _char,\n left - strokeOffsets.offsetX,\n top - strokeOffsets.offsetY\n );\n ctx.restore();\n },\n\n /**\n * Turns the character into a 'superior figure' (i.e. 'superscript')\n * @param {Number} start selection start\n * @param {Number} end selection end\n * @returns {fabric.Text} thisArg\n * @chainable\n */\n setSuperscript: function (start, end) {\n return this._setScript(start, end, this.superscript);\n },\n\n /**\n * Turns the character into an 'inferior figure' (i.e. 'subscript')\n * @param {Number} start selection start\n * @param {Number} end selection end\n * @returns {fabric.Text} thisArg\n * @chainable\n */\n setSubscript: function (start, end) {\n return this._setScript(start, end, this.subscript);\n },\n\n /**\n * Applies 'schema' at given position\n * @private\n * @param {Number} start selection start\n * @param {Number} end selection end\n * @param {Number} schema\n * @returns {fabric.Text} thisArg\n * @chainable\n */\n _setScript: function (start, end, schema) {\n var loc = this.get2DCursorLocation(start, true),\n fontSize = this.getValueOfPropertyAt(\n loc.lineIndex,\n loc.charIndex,\n 'fontSize'\n ),\n dy = this.getValueOfPropertyAt(\n loc.lineIndex,\n loc.charIndex,\n 'deltaY'\n ),\n style = {\n fontSize: fontSize * schema.size,\n deltaY: dy + fontSize * schema.baseline,\n };\n this.setSelectionStyles(style, start, end);\n return this;\n },\n\n /**\n * @private\n * @param {Number} lineIndex index text line\n * @return {Number} Line left offset\n */\n _getLineLeftOffset: function (lineIndex) {\n var lineWidth = this.getLineWidth(lineIndex),\n lineDiff = this.width - lineWidth,\n textAlign = this.textAlign,\n direction = this.direction,\n isEndOfWrapping,\n leftOffset = 0,\n isEndOfWrapping = this.isEndOfWrapping(lineIndex);\n if (\n textAlign === 'justify' ||\n (textAlign === 'justify-center' && !isEndOfWrapping) ||\n (textAlign === 'justify-right' && !isEndOfWrapping) ||\n (textAlign === 'justify-left' && !isEndOfWrapping)\n ) {\n return 0;\n }\n if (textAlign === 'center') {\n leftOffset = lineDiff / 2;\n }\n if (textAlign === 'right') {\n leftOffset = lineDiff;\n }\n if (textAlign === 'justify-center') {\n leftOffset = lineDiff / 2;\n }\n if (textAlign === 'justify-right') {\n leftOffset = lineDiff;\n }\n if (direction === 'rtl') {\n if (\n textAlign === 'right' ||\n textAlign === 'justify' ||\n textAlign === 'justify-right'\n ) {\n leftOffset = 0;\n } else if (textAlign === 'left' || textAlign === 'justify-left') {\n leftOffset = -lineDiff;\n } else if (textAlign === 'center' || textAlign === 'justify-center') {\n leftOffset = -lineDiff / 2;\n }\n }\n return leftOffset;\n },\n\n /**\n * @private\n */\n _clearCache: function () {\n this.__lineWidths = [];\n this.__lineHeights = [];\n this.__charBounds = [];\n },\n\n /**\n * @private\n */\n _shouldClearDimensionCache: function () {\n var shouldClear = this._forceClearCache;\n shouldClear ||\n (shouldClear = this.hasStateChanged('_dimensionAffectingProps'));\n if (shouldClear) {\n this.dirty = true;\n this._forceClearCache = false;\n }\n return shouldClear;\n },\n\n /**\n * Measure a single line given its index. Used to calculate the initial\n * text bounding box. The values are calculated and stored in __lineWidths cache.\n * @private\n * @param {Number} lineIndex line number\n * @return {Number} Line width\n */\n getLineWidth: function (lineIndex) {\n if (this.__lineWidths[lineIndex] !== undefined) {\n return this.__lineWidths[lineIndex];\n }\n\n var lineInfo = this.measureLine(lineIndex);\n var width = lineInfo.width;\n this.__lineWidths[lineIndex] = width;\n return width;\n },\n\n _getWidthOfCharSpacing: function () {\n if (this.charSpacing !== 0) {\n return (this.fontSize * this.charSpacing) / 1000;\n }\n return 0;\n },\n\n /**\n * Retrieves the value of property at given character position\n * @param {Number} lineIndex the line number\n * @param {Number} charIndex the character number\n * @param {String} property the property name\n * @returns the value of 'property'\n */\n getValueOfPropertyAt: function (lineIndex, charIndex, property) {\n var charStyle = this._getStyleDeclaration(lineIndex, charIndex);\n if (charStyle && typeof charStyle[property] !== 'undefined') {\n return charStyle[property];\n }\n return this[property];\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _renderTextDecoration: function (ctx, type) {\n if (!this[type] && !this.styleHas(type)) {\n return;\n }\n var heightOfLine,\n size,\n _size,\n lineLeftOffset,\n dy,\n _dy,\n line,\n lastDecoration,\n leftOffset = this._getLeftOffset(),\n topOffset = this._getTopOffset(),\n top,\n boxStart,\n boxWidth,\n charBox,\n currentDecoration,\n maxHeight,\n currentFill,\n lastFill,\n path = this.path,\n charSpacing = this._getWidthOfCharSpacing(),\n offsetY = this.offsets[type];\n\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n heightOfLine = this.getHeightOfLine(i);\n if (!this[type] && !this.styleHas(type, i)) {\n topOffset += heightOfLine;\n continue;\n }\n line = this._textLines[i];\n maxHeight = heightOfLine / this.lineHeight;\n lineLeftOffset = this._getLineLeftOffset(i);\n boxStart = 0;\n boxWidth = 0;\n lastDecoration = this.getValueOfPropertyAt(i, 0, type);\n lastFill = this.getValueOfPropertyAt(i, 0, 'fill');\n top = topOffset + maxHeight * (1 - this._fontSizeFraction);\n size = this.getHeightOfChar(i, 0);\n dy = this.getValueOfPropertyAt(i, 0, 'deltaY');\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n charBox = this.__charBounds[i][j];\n currentDecoration = this.getValueOfPropertyAt(i, j, type);\n currentFill = this.getValueOfPropertyAt(i, j, 'fill');\n _size = this.getHeightOfChar(i, j);\n _dy = this.getValueOfPropertyAt(i, j, 'deltaY');\n if (path && currentDecoration && currentFill) {\n ctx.save();\n ctx.fillStyle = lastFill;\n ctx.translate(charBox.renderLeft, charBox.renderTop);\n ctx.rotate(charBox.angle);\n ctx.fillRect(\n -charBox.kernedWidth / 2,\n offsetY * _size + _dy,\n charBox.kernedWidth,\n this.fontSize / 15\n );\n ctx.restore();\n } else if (\n (currentDecoration !== lastDecoration ||\n currentFill !== lastFill ||\n _size !== size ||\n _dy !== dy) &&\n boxWidth > 0\n ) {\n var drawStart = leftOffset + lineLeftOffset + boxStart;\n if (this.direction === 'rtl') {\n drawStart = this.width - drawStart - boxWidth;\n }\n if (lastDecoration && lastFill) {\n ctx.fillStyle = lastFill;\n ctx.fillRect(\n drawStart,\n top + offsetY * size + dy,\n boxWidth,\n this.fontSize / 15\n );\n }\n boxStart = charBox.left;\n boxWidth = charBox.width;\n lastDecoration = currentDecoration;\n lastFill = currentFill;\n size = _size;\n dy = _dy;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n }\n var drawStart = leftOffset + lineLeftOffset + boxStart;\n if (this.direction === 'rtl') {\n drawStart = this.width - drawStart - boxWidth;\n }\n ctx.fillStyle = currentFill;\n currentDecoration &&\n currentFill &&\n ctx.fillRect(\n drawStart,\n top + offsetY * size + dy,\n boxWidth - charSpacing,\n this.fontSize / 15\n );\n topOffset += heightOfLine;\n }\n // if there is text background color no\n // other shadows should be casted\n this._removeShadow(ctx);\n },\n\n /**\n * return font declaration string for canvas context\n * @param {Object} [styleObject] object\n * @returns {String} font declaration formatted for canvas context.\n */\n _getFontDeclaration: function (styleObject, forMeasuring) {\n var style = styleObject || this,\n family = this.fontFamily,\n fontIsGeneric =\n fabric.Text.genericFonts.indexOf(family.toLowerCase()) > -1;\n var fontFamily =\n family === undefined ||\n family.indexOf(\"'\") > -1 ||\n family.indexOf(',') > -1 ||\n family.indexOf('\"') > -1 ||\n fontIsGeneric\n ? style.fontFamily\n : '\"' + style.fontFamily + '\"';\n return [\n // node-canvas needs \"weight style\", while browsers need \"style weight\"\n // verify if this can be fixed in JSDOM\n fabric.isLikelyNode ? style.fontWeight : style.fontStyle,\n fabric.isLikelyNode ? style.fontStyle : style.fontWeight,\n forMeasuring ? this.CACHE_FONT_SIZE + 'px' : style.fontSize + 'px',\n fontFamily,\n ].join(' ');\n },\n\n /**\n * Renders text instance on a specified context\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n render: function (ctx) {\n // do not render if object is not visible\n if (!this.visible) {\n return;\n }\n if (\n this.canvas &&\n this.canvas.skipOffscreen &&\n !this.group &&\n !this.isOnScreen()\n ) {\n return;\n }\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n }\n this.callSuper('render', ctx);\n },\n\n /**\n * Override this method to customize grapheme splitting\n * @param {string} value\n * @returns {string[]} array of graphemes\n */\n graphemeSplit: function (value) {\n return fabric.util.string.graphemeSplit(value);\n },\n\n /**\n * Returns the text as an array of lines.\n * @param {String} text text to split\n * @returns {Array} Lines in the text\n */\n _splitTextIntoLines: function (text) {\n var lines = text.split(this._reNewline),\n newLines = new Array(lines.length),\n newLine = ['\\n'],\n newText = [];\n for (var i = 0; i < lines.length; i++) {\n newLines[i] = this.graphemeSplit(lines[i]);\n newText = newText.concat(newLines[i], newLine);\n }\n newText.pop();\n return {\n _unwrappedLines: newLines,\n lines: lines,\n graphemeText: newText,\n graphemeLines: newLines,\n };\n },\n\n /**\n * Returns object representation of an instance\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} Object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n var allProperties = additionalProps.concat(propertiesToInclude);\n var obj = this.callSuper('toObject', allProperties);\n obj.styles = fabric.util.stylesToArray(this.styles, this.text);\n if (obj.path) {\n obj.path = this.path.toObject();\n }\n return obj;\n },\n\n /**\n * Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`.\n * @param {String|Object} key Property name or object (if object, iterate over the object properties)\n * @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one)\n * @return {fabric.Object} thisArg\n * @chainable\n */\n set: function (key, value) {\n this.callSuper('set', key, value);\n var needsDims = false;\n var isAddingPath = false;\n if (typeof key === 'object') {\n for (var _key in key) {\n if (_key === 'path') {\n this.setPathInfo();\n }\n needsDims =\n needsDims || this._dimensionAffectingProps.indexOf(_key) !== -1;\n isAddingPath = isAddingPath || _key === 'path';\n }\n } else {\n needsDims = this._dimensionAffectingProps.indexOf(key) !== -1;\n isAddingPath = key === 'path';\n }\n if (isAddingPath) {\n this.setPathInfo();\n }\n if (needsDims) {\n this.initDimensions();\n this.setCoords();\n }\n return this;\n },\n\n /**\n * Returns complexity of an instance\n * @return {Number} complexity\n */\n complexity: function () {\n return 1;\n },\n }\n );\n\n /* _FROM_SVG_START_ */\n /**\n * List of attribute names to account for when parsing SVG element (used by {@link fabric.Text.fromElement})\n * @static\n * @memberOf fabric.Text\n * @see: http://www.w3.org/TR/SVG/text.html#TextElement\n */\n fabric.Text.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(\n 'x y dx dy font-family font-style font-weight font-size letter-spacing text-decoration text-anchor'.split(\n ' '\n )\n );\n\n /**\n * Returns fabric.Text instance from an SVG element (not yet implemented)\n * @static\n * @memberOf fabric.Text\n * @param {SVGElement} element Element to parse\n * @param {Function} callback callback function invoked after parsing\n * @param {Object} [options] Options object\n */\n fabric.Text.fromElement = function (element, callback, options) {\n if (!element) {\n return callback(null);\n }\n\n var parsedAttributes = fabric.parseAttributes(\n element,\n fabric.Text.ATTRIBUTE_NAMES\n ),\n parsedAnchor = parsedAttributes.textAnchor || 'left';\n options = Object.assign({}, options, parsedAttributes);\n\n options.top = options.top || 0;\n options.left = options.left || 0;\n if (parsedAttributes.textDecoration) {\n var textDecoration = parsedAttributes.textDecoration;\n if (textDecoration.indexOf('underline') !== -1) {\n options.underline = true;\n }\n if (textDecoration.indexOf('overline') !== -1) {\n options.overline = true;\n }\n if (textDecoration.indexOf('line-through') !== -1) {\n options.linethrough = true;\n }\n delete options.textDecoration;\n }\n if ('dx' in parsedAttributes) {\n options.left += parsedAttributes.dx;\n }\n if ('dy' in parsedAttributes) {\n options.top += parsedAttributes.dy;\n }\n if (!('fontSize' in options)) {\n options.fontSize = DEFAULT_SVG_FONT_SIZE;\n }\n\n var textContent = '';\n\n // The XML is not properly parsed in IE9 so a workaround to get\n // textContent is through firstChild.data. Another workaround would be\n // to convert XML loaded from a file to be converted using DOMParser (same way loadSVGFromString() does)\n if (!('textContent' in element)) {\n if ('firstChild' in element && element.firstChild !== null) {\n if ('data' in element.firstChild && element.firstChild.data !== null) {\n textContent = element.firstChild.data;\n }\n }\n } else {\n textContent = element.textContent;\n }\n\n textContent = textContent\n .replace(/^\\s+|\\s+$|\\n+/g, '')\n .replace(/\\s+/g, ' ');\n var originalStrokeWidth = options.strokeWidth;\n options.strokeWidth = 0;\n\n var text = new fabric.Text(textContent, options),\n textHeightScaleFactor = text.getScaledHeight() / text.height,\n lineHeightDiff =\n (text.height + text.strokeWidth) * text.lineHeight - text.height,\n scaledDiff = lineHeightDiff * textHeightScaleFactor,\n textHeight = text.getScaledHeight() + scaledDiff,\n offX = 0;\n /*\n Adjust positioning:\n x/y attributes in SVG correspond to the bottom-left corner of text bounding box\n fabric output by default at top, left.\n */\n if (parsedAnchor === 'center') {\n offX = text.getScaledWidth() / 2;\n }\n if (parsedAnchor === 'right') {\n offX = text.getScaledWidth();\n }\n text.set({\n left: text.left - offX,\n top:\n text.top -\n (textHeight - text.fontSize * (0.07 + text._fontSizeFraction)) /\n text.lineHeight,\n strokeWidth:\n typeof originalStrokeWidth !== 'undefined' ? originalStrokeWidth : 1,\n });\n callback(text);\n };\n /* _FROM_SVG_END_ */\n\n /**\n * Returns fabric.Text instance from an object representation\n * @static\n * @memberOf fabric.Text\n * @param {Object} object plain js Object to create an instance from\n * @returns {Promise}\n */\n fabric.Text.fromObject = function (object) {\n var styles = fabric.util.stylesFromArray(object.styles, object.text);\n //copy object to prevent mutation\n var objCopy = Object.assign({}, object, { styles: styles });\n return fabric.Object._fromObject(fabric.Text, objCopy, {\n extraParam: 'text',\n });\n };\n\n fabric.Text.genericFonts = [\n 'sans-serif',\n 'serif',\n 'cursive',\n 'fantasy',\n 'monospace',\n ];\n\n fabric.util.createAccessors && fabric.util.createAccessors(fabric.Text);\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.Text.prototype,\n /** @lends fabric.Text.prototype */ {\n /**\n * Returns true if object has no styling or no styling in a line\n * @param {Number} lineIndex , lineIndex is on wrapped lines.\n * @return {Boolean}\n */\n isEmptyStyles: function (lineIndex) {\n if (!this.styles) {\n return true;\n }\n if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) {\n return true;\n }\n var obj =\n typeof lineIndex === 'undefined'\n ? this.styles\n : { line: this.styles[lineIndex] };\n for (var p1 in obj) {\n for (var p2 in obj[p1]) {\n // eslint-disable-next-line no-unused-vars\n for (var p3 in obj[p1][p2]) {\n return false;\n }\n }\n }\n return true;\n },\n\n /**\n * Returns true if object has a style property or has it ina specified line\n * This function is used to detect if a text will use a particular property or not.\n * @param {String} property to check for\n * @param {Number} lineIndex to check the style on\n * @return {Boolean}\n */\n styleHas: function (property, lineIndex) {\n if (!this.styles || !property || property === '') {\n return false;\n }\n if (typeof lineIndex !== 'undefined' && !this.styles[lineIndex]) {\n return false;\n }\n var obj =\n typeof lineIndex === 'undefined'\n ? this.styles\n : { 0: this.styles[lineIndex] };\n // eslint-disable-next-line\n for (var p1 in obj) {\n // eslint-disable-next-line\n for (var p2 in obj[p1]) {\n if (typeof obj[p1][p2][property] !== 'undefined') {\n return true;\n }\n }\n }\n return false;\n },\n\n /**\n * Check if characters in a text have a value for a property\n * whose value matches the textbox's value for that property. If so,\n * the character-level property is deleted. If the character\n * has no other properties, then it is also deleted. Finally,\n * if the line containing that character has no other characters\n * then it also is deleted.\n *\n * @param {string} property The property to compare between characters and text.\n */\n cleanStyle: function (property) {\n if (!this.styles || !property || property === '') {\n return false;\n }\n var obj = this.styles,\n stylesCount = 0,\n letterCount,\n stylePropertyValue,\n allStyleObjectPropertiesMatch = true,\n graphemeCount = 0,\n styleObject;\n // eslint-disable-next-line\n for (var p1 in obj) {\n letterCount = 0;\n // eslint-disable-next-line\n for (var p2 in obj[p1]) {\n var styleObject = obj[p1][p2],\n stylePropertyHasBeenSet = styleObject.hasOwnProperty(property);\n\n stylesCount++;\n\n if (stylePropertyHasBeenSet) {\n if (!stylePropertyValue) {\n stylePropertyValue = styleObject[property];\n } else if (styleObject[property] !== stylePropertyValue) {\n allStyleObjectPropertiesMatch = false;\n }\n\n if (styleObject[property] === this[property]) {\n delete styleObject[property];\n }\n } else {\n allStyleObjectPropertiesMatch = false;\n }\n\n if (Object.keys(styleObject).length !== 0) {\n letterCount++;\n } else {\n delete obj[p1][p2];\n }\n }\n\n if (letterCount === 0) {\n delete obj[p1];\n }\n }\n // if every grapheme has the same style set then\n // delete those styles and set it on the parent\n for (var i = 0; i < this._textLines.length; i++) {\n graphemeCount += this._textLines[i].length;\n }\n if (allStyleObjectPropertiesMatch && stylesCount === graphemeCount) {\n this[property] = stylePropertyValue;\n this.removeStyle(property);\n }\n },\n\n /**\n * Remove a style property or properties from all individual character styles\n * in a text object. Deletes the character style object if it contains no other style\n * props. Deletes a line style object if it contains no other character styles.\n *\n * @param {String} props The property to remove from character styles.\n */\n removeStyle: function (property) {\n if (!this.styles || !property || property === '') {\n return;\n }\n var obj = this.styles,\n line,\n lineNum,\n charNum;\n for (lineNum in obj) {\n line = obj[lineNum];\n for (charNum in line) {\n delete line[charNum][property];\n if (Object.keys(line[charNum]).length === 0) {\n delete line[charNum];\n }\n }\n if (Object.keys(line).length === 0) {\n delete obj[lineNum];\n }\n }\n },\n\n /**\n * @private\n */\n _extendStyles: function (index, styles) {\n var loc = this.get2DCursorLocation(index);\n\n if (!this._getLineStyle(loc.lineIndex)) {\n this._setLineStyle(loc.lineIndex);\n }\n\n if (!this._getStyleDeclaration(loc.lineIndex, loc.charIndex)) {\n this._setStyleDeclaration(loc.lineIndex, loc.charIndex, {});\n }\n\n fabric.util.object.extend(\n this._getStyleDeclaration(loc.lineIndex, loc.charIndex),\n styles\n );\n },\n\n /**\n * Returns 2d representation (lineIndex and charIndex) of cursor (or selection start)\n * @param {Number} [selectionStart] Optional index. When not given, current selectionStart is used.\n * @param {Boolean} [skipWrapping] consider the location for unwrapped lines. useful to manage styles.\n */\n get2DCursorLocation: function (selectionStart, skipWrapping) {\n if (typeof selectionStart === 'undefined') {\n selectionStart = this.selectionStart;\n }\n var lines = skipWrapping ? this._unwrappedTextLines : this._textLines,\n len = lines.length;\n for (var i = 0; i < len; i++) {\n if (selectionStart <= lines[i].length) {\n return {\n lineIndex: i,\n charIndex: selectionStart,\n };\n }\n selectionStart -= lines[i].length + this.missingNewlineOffset(i);\n }\n return {\n lineIndex: i - 1,\n charIndex:\n lines[i - 1].length < selectionStart\n ? lines[i - 1].length\n : selectionStart,\n };\n },\n\n /**\n * Gets style of a current selection/cursor (at the start position)\n * if startIndex or endIndex are not provided, selectionStart or selectionEnd will be used.\n * @param {Number} [startIndex] Start index to get styles at\n * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1\n * @param {Boolean} [complete] get full style or not\n * @return {Array} styles an array with one, zero or more Style objects\n */\n getSelectionStyles: function (startIndex, endIndex, complete) {\n if (typeof startIndex === 'undefined') {\n startIndex = this.selectionStart || 0;\n }\n if (typeof endIndex === 'undefined') {\n endIndex = this.selectionEnd || startIndex;\n }\n var styles = [];\n for (var i = startIndex; i < endIndex; i++) {\n styles.push(this.getStyleAtPosition(i, complete));\n }\n return styles;\n },\n\n /**\n * Gets style of a current selection/cursor position\n * @param {Number} position to get styles at\n * @param {Boolean} [complete] full style if true\n * @return {Object} style Style object at a specified index\n * @private\n */\n getStyleAtPosition: function (position, complete) {\n var loc = this.get2DCursorLocation(position),\n style = complete\n ? this.getCompleteStyleDeclaration(loc.lineIndex, loc.charIndex)\n : this._getStyleDeclaration(loc.lineIndex, loc.charIndex);\n return style || {};\n },\n\n /**\n * Sets style of a current selection, if no selection exist, do not set anything.\n * @param {Object} [styles] Styles object\n * @param {Number} [startIndex] Start index to get styles at\n * @param {Number} [endIndex] End index to get styles at, if not specified selectionEnd or startIndex + 1\n * @return {fabric.IText} thisArg\n * @chainable\n */\n setSelectionStyles: function (styles, startIndex, endIndex) {\n if (typeof startIndex === 'undefined') {\n startIndex = this.selectionStart || 0;\n }\n if (typeof endIndex === 'undefined') {\n endIndex = this.selectionEnd || startIndex;\n }\n for (var i = startIndex; i < endIndex; i++) {\n this._extendStyles(i, styles);\n }\n /* not included in _extendStyles to avoid clearing cache more than once */\n this._forceClearCache = true;\n return this;\n },\n\n /**\n * get the reference, not a clone, of the style object for a given character\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @return {Object} style object\n */\n _getStyleDeclaration: function (lineIndex, charIndex) {\n var lineStyle = this.styles && this.styles[lineIndex];\n if (!lineStyle) {\n return null;\n }\n return lineStyle[charIndex];\n },\n\n /**\n * return a new object that contains all the style property for a character\n * the object returned is newly created\n * @param {Number} lineIndex of the line where the character is\n * @param {Number} charIndex position of the character on the line\n * @return {Object} style object\n */\n getCompleteStyleDeclaration: function (lineIndex, charIndex) {\n var style = this._getStyleDeclaration(lineIndex, charIndex) || {},\n styleObject = {},\n prop;\n for (var i = 0; i < this._styleProperties.length; i++) {\n prop = this._styleProperties[i];\n styleObject[prop] =\n typeof style[prop] === 'undefined' ? this[prop] : style[prop];\n }\n return styleObject;\n },\n\n /**\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @param {Object} style\n * @private\n */\n _setStyleDeclaration: function (lineIndex, charIndex, style) {\n this.styles[lineIndex][charIndex] = style;\n },\n\n /**\n *\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @private\n */\n _deleteStyleDeclaration: function (lineIndex, charIndex) {\n delete this.styles[lineIndex][charIndex];\n },\n\n /**\n * @param {Number} lineIndex\n * @return {Boolean} if the line exists or not\n * @private\n */\n _getLineStyle: function (lineIndex) {\n return !!this.styles[lineIndex];\n },\n\n /**\n * Set the line style to an empty object so that is initialized\n * @param {Number} lineIndex\n * @private\n */\n _setLineStyle: function (lineIndex) {\n this.styles[lineIndex] = {};\n },\n\n /**\n * @param {Number} lineIndex\n * @private\n */\n _deleteLineStyle: function (lineIndex) {\n delete this.styles[lineIndex];\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n /**\n * IText class (introduced in v1.4) Events are also fired with \"text:\"\n * prefix when observing canvas.\n * @class fabric.IText\n * @extends fabric.Text\n * @mixes fabric.Observable\n *\n * @fires changed\n * @fires selection:changed\n * @fires editing:entered\n * @fires editing:exited\n * @fires dragstart\n * @fires drag drag event firing on the drag source\n * @fires dragend\n * @fires copy\n * @fires cut\n * @fires paste\n *\n * @return {fabric.IText} thisArg\n * @see {@link fabric.IText#initialize} for constructor definition\n *\n *

Supported key combinations:

\n * 
\n   *   Move cursor:                    left, right, up, down\n   *   Select character:               shift + left, shift + right\n   *   Select text vertically:         shift + up, shift + down\n   *   Move cursor by word:            alt + left, alt + right\n   *   Select words:                   shift + alt + left, shift + alt + right\n   *   Move cursor to line start/end:  cmd + left, cmd + right or home, end\n   *   Select till start/end of line:  cmd + shift + left, cmd + shift + right or shift + home, shift + end\n   *   Jump to start/end of text:      cmd + up, cmd + down\n   *   Select till start/end of text:  cmd + shift + up, cmd + shift + down or shift + pgUp, shift + pgDown\n   *   Delete character:               backspace\n   *   Delete word:                    alt + backspace\n   *   Delete line:                    cmd + backspace\n   *   Forward delete:                 delete\n   *   Copy text:                      ctrl/cmd + c\n   *   Paste text:                     ctrl/cmd + v\n   *   Cut text:                       ctrl/cmd + x\n   *   Select entire text:             ctrl/cmd + a\n   *   Quit editing                    tab or esc\n   *
\n *\n *

Supported mouse/touch combination

\n * 
\n   *   Position cursor:                click/touch\n   *   Create selection:               click/touch & drag\n   *   Create selection:               click & shift + click\n   *   Select word:                    double click\n   *   Select line:                    triple click\n   *
\n */\n fabric.IText = fabric.util.createClass(\n fabric.Text,\n fabric.Observable,\n /** @lends fabric.IText.prototype */ {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'i-text',\n\n /**\n * Index where text selection starts (or where cursor is when there is no selection)\n * @type Number\n * @default\n */\n selectionStart: 0,\n\n /**\n * Index where text selection ends\n * @type Number\n * @default\n */\n selectionEnd: 0,\n\n /**\n * Color of text selection\n * @type String\n * @default\n */\n selectionColor: 'rgba(17,119,255,0.3)',\n\n /**\n * Indicates whether text is in editing mode\n * @type Boolean\n * @default\n */\n isEditing: false,\n\n /**\n * Indicates whether a text can be edited\n * @type Boolean\n * @default\n */\n editable: true,\n\n /**\n * Border color of text object while it's in editing mode\n * @type String\n * @default\n */\n editingBorderColor: 'rgba(102,153,255,0.25)',\n\n /**\n * Width of cursor (in px)\n * @type Number\n * @default\n */\n cursorWidth: 2,\n\n /**\n * Color of text cursor color in editing mode.\n * if not set (default) will take color from the text.\n * if set to a color value that fabric can understand, it will\n * be used instead of the color of the text at the current position.\n * @type String\n * @default\n */\n cursorColor: '',\n\n /**\n * Delay between cursor blink (in ms)\n * @type Number\n * @default\n */\n cursorDelay: 1000,\n\n /**\n * Duration of cursor fadein (in ms)\n * @type Number\n * @default\n */\n cursorDuration: 600,\n\n /**\n * Indicates whether internal text char widths can be cached\n * @type Boolean\n * @default\n */\n caching: true,\n\n /**\n * DOM container to append the hiddenTextarea.\n * An alternative to attaching to the document.body.\n * Useful to reduce laggish redraw of the full document.body tree and\n * also with modals event capturing that won't let the textarea take focus.\n * @type HTMLElement\n * @default\n */\n hiddenTextareaContainer: null,\n\n /**\n * @private\n */\n _reSpace: /\\s|\\n/,\n\n /**\n * @private\n */\n _currentCursorOpacity: 1,\n\n /**\n * @private\n */\n _selectionDirection: null,\n\n /**\n * Helps determining when the text is in composition, so that the cursor\n * rendering is altered.\n */\n inCompositionMode: false,\n\n /**\n * Constructor\n * @param {String} text Text string\n * @param {Object} [options] Options object\n * @return {fabric.IText} thisArg\n */\n initialize: function (text, options) {\n this.callSuper('initialize', text, options);\n this.initBehavior();\n },\n\n /**\n * While editing handle differently\n * @private\n * @param {string} key\n * @param {*} value\n */\n _set: function (key, value) {\n if (this.isEditing && this._savedProps && key in this._savedProps) {\n this._savedProps[key] = value;\n } else {\n this.callSuper('_set', key, value);\n }\n },\n\n /**\n * Sets selection start (left boundary of a selection)\n * @param {Number} index Index to set selection start to\n */\n setSelectionStart: function (index) {\n index = Math.max(index, 0);\n this._updateAndFire('selectionStart', index);\n },\n\n /**\n * Sets selection end (right boundary of a selection)\n * @param {Number} index Index to set selection end to\n */\n setSelectionEnd: function (index) {\n index = Math.min(index, this.text.length);\n this._updateAndFire('selectionEnd', index);\n },\n\n /**\n * @private\n * @param {String} property 'selectionStart' or 'selectionEnd'\n * @param {Number} index new position of property\n */\n _updateAndFire: function (property, index) {\n if (this[property] !== index) {\n this._fireSelectionChanged();\n this[property] = index;\n }\n this._updateTextarea();\n },\n\n /**\n * Fires the even of selection changed\n * @private\n */\n _fireSelectionChanged: function () {\n this.fire('selection:changed');\n this.canvas &&\n this.canvas.fire('text:selection:changed', { target: this });\n },\n\n /**\n * Initialize text dimensions. Render all text on given context\n * or on a offscreen canvas to get the text width with measureText.\n * Updates this.width and this.height with the proper values.\n * Does not return dimensions.\n * @private\n */\n initDimensions: function () {\n this.isEditing && this.initDelayedCursor();\n this.clearContextTop();\n this.callSuper('initDimensions');\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n render: function (ctx) {\n this.clearContextTop();\n this.callSuper('render', ctx);\n // clear the cursorOffsetCache, so we ensure to calculate once per renderCursor\n // the correct position but not at every cursor animation.\n this.cursorOffsetCache = {};\n this.renderCursorOrSelection();\n },\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} ctx Context to render on\n */\n _render: function (ctx) {\n this.callSuper('_render', ctx);\n },\n\n /**\n * Renders cursor or selection (depending on what exists)\n * it does on the contextTop. If contextTop is not available, do nothing.\n */\n renderCursorOrSelection: function () {\n if (!this.isEditing) {\n return;\n }\n var ctx = this.clearContextTop(true);\n if (!ctx) {\n return;\n }\n var boundaries = this._getCursorBoundaries();\n if (this.selectionStart === this.selectionEnd) {\n this.renderCursor(ctx, boundaries);\n } else {\n this.renderSelection(ctx, boundaries);\n }\n ctx.restore();\n },\n\n /**\n * Renders cursor on context Top, outside the animation cycle, on request\n * Used for the drag/drop effect.\n * If contextTop is not available, do nothing.\n */\n renderCursorAt: function (selectionStart) {\n var boundaries = this._getCursorBoundaries(selectionStart, true);\n this._renderCursor(this.canvas.contextTop, boundaries, selectionStart);\n },\n\n /**\n * Returns cursor boundaries (left, top, leftOffset, topOffset)\n * left/top are left/top of entire text box\n * leftOffset/topOffset are offset from that left/top point of a text box\n * @private\n * @param {number} [index] index from start\n * @param {boolean} [skipCaching]\n */\n _getCursorBoundaries: function (index, skipCaching) {\n if (typeof index === 'undefined') {\n index = this.selectionStart;\n }\n var left = this._getLeftOffset(),\n top = this._getTopOffset(),\n offsets = this._getCursorBoundariesOffsets(index, skipCaching);\n return {\n left: left,\n top: top,\n leftOffset: offsets.left,\n topOffset: offsets.top,\n };\n },\n\n /**\n * Caches and returns cursor left/top offset relative to instance's center point\n * @private\n * @param {number} index index from start\n * @param {boolean} [skipCaching]\n */\n _getCursorBoundariesOffsets: function (index, skipCaching) {\n if (skipCaching) {\n return this.__getCursorBoundariesOffsets(index);\n }\n if (this.cursorOffsetCache && 'top' in this.cursorOffsetCache) {\n return this.cursorOffsetCache;\n }\n return (this.cursorOffsetCache =\n this.__getCursorBoundariesOffsets(index));\n },\n\n /**\n * Calcualtes cursor left/top offset relative to instance's center point\n * @private\n * @param {number} index index from start\n */\n __getCursorBoundariesOffsets: function (index) {\n var lineLeftOffset,\n lineIndex,\n charIndex,\n topOffset = 0,\n leftOffset = 0,\n boundaries,\n cursorPosition = this.get2DCursorLocation(index);\n charIndex = cursorPosition.charIndex;\n lineIndex = cursorPosition.lineIndex;\n for (var i = 0; i < lineIndex; i++) {\n topOffset += this.getHeightOfLine(i);\n }\n lineLeftOffset = this._getLineLeftOffset(lineIndex);\n var bound = this.__charBounds[lineIndex][charIndex];\n bound && (leftOffset = bound.left);\n if (\n this.charSpacing !== 0 &&\n charIndex === this._textLines[lineIndex].length\n ) {\n leftOffset -= this._getWidthOfCharSpacing();\n }\n boundaries = {\n top: topOffset,\n left: lineLeftOffset + (leftOffset > 0 ? leftOffset : 0),\n };\n if (this.direction === 'rtl') {\n if (\n this.textAlign === 'right' ||\n this.textAlign === 'justify' ||\n this.textAlign === 'justify-right'\n ) {\n boundaries.left *= -1;\n } else if (\n this.textAlign === 'left' ||\n this.textAlign === 'justify-left'\n ) {\n boundaries.left =\n lineLeftOffset - (leftOffset > 0 ? leftOffset : 0);\n } else if (\n this.textAlign === 'center' ||\n this.textAlign === 'justify-center'\n ) {\n boundaries.left =\n lineLeftOffset - (leftOffset > 0 ? leftOffset : 0);\n }\n }\n return boundaries;\n },\n\n /**\n * Renders cursor\n * @param {Object} boundaries\n * @param {CanvasRenderingContext2D} ctx transformed context to draw on\n */\n renderCursor: function (ctx, boundaries) {\n this._renderCursor(ctx, boundaries, this.selectionStart);\n },\n\n _renderCursor: function (ctx, boundaries, selectionStart) {\n var cursorLocation = this.get2DCursorLocation(selectionStart),\n lineIndex = cursorLocation.lineIndex,\n charIndex =\n cursorLocation.charIndex > 0 ? cursorLocation.charIndex - 1 : 0,\n charHeight = this.getValueOfPropertyAt(\n lineIndex,\n charIndex,\n 'fontSize'\n ),\n multiplier = this.scaleX * this.canvas.getZoom(),\n cursorWidth = this.cursorWidth / multiplier,\n topOffset = boundaries.topOffset,\n dy = this.getValueOfPropertyAt(lineIndex, charIndex, 'deltaY');\n topOffset +=\n ((1 - this._fontSizeFraction) * this.getHeightOfLine(lineIndex)) /\n this.lineHeight -\n charHeight * (1 - this._fontSizeFraction);\n\n if (this.inCompositionMode) {\n // TODO: investigate why there isn't a return inside the if,\n // and why can't happe top of the function\n this.renderSelection(ctx, boundaries);\n }\n ctx.fillStyle =\n this.cursorColor ||\n this.getValueOfPropertyAt(lineIndex, charIndex, 'fill');\n ctx.globalAlpha = this.__isMousedown ? 1 : this._currentCursorOpacity;\n ctx.fillRect(\n boundaries.left + boundaries.leftOffset - cursorWidth / 2,\n topOffset + boundaries.top + dy,\n cursorWidth,\n charHeight\n );\n },\n\n /**\n * Renders text selection\n * @param {Object} boundaries Object with left/top/leftOffset/topOffset\n * @param {CanvasRenderingContext2D} ctx transformed context to draw on\n */\n renderSelection: function (ctx, boundaries) {\n var selection = {\n selectionStart: this.inCompositionMode\n ? this.hiddenTextarea.selectionStart\n : this.selectionStart,\n selectionEnd: this.inCompositionMode\n ? this.hiddenTextarea.selectionEnd\n : this.selectionEnd,\n };\n this._renderSelection(ctx, selection, boundaries);\n },\n\n /**\n * Renders drag start text selection\n */\n renderDragSourceEffect: function () {\n if (\n this.__isDragging &&\n this.__dragStartSelection &&\n this.__dragStartSelection\n ) {\n this._renderSelection(\n this.canvas.contextTop,\n this.__dragStartSelection,\n this._getCursorBoundaries(\n this.__dragStartSelection.selectionStart,\n true\n )\n );\n }\n },\n\n renderDropTargetEffect: function (e) {\n var dragSelection = this.getSelectionStartFromPointer(e);\n this.renderCursorAt(dragSelection);\n },\n\n /**\n * Renders text selection\n * @private\n * @param {{ selectionStart: number, selectionEnd: number }} selection\n * @param {Object} boundaries Object with left/top/leftOffset/topOffset\n * @param {CanvasRenderingContext2D} ctx transformed context to draw on\n */\n _renderSelection: function (ctx, selection, boundaries) {\n var selectionStart = selection.selectionStart,\n selectionEnd = selection.selectionEnd,\n isJustify = this.textAlign.indexOf('justify') !== -1,\n start = this.get2DCursorLocation(selectionStart),\n end = this.get2DCursorLocation(selectionEnd),\n startLine = start.lineIndex,\n endLine = end.lineIndex,\n startChar = start.charIndex < 0 ? 0 : start.charIndex,\n endChar = end.charIndex < 0 ? 0 : end.charIndex;\n\n for (var i = startLine; i <= endLine; i++) {\n var lineOffset = this._getLineLeftOffset(i) || 0,\n lineHeight = this.getHeightOfLine(i),\n realLineHeight = 0,\n boxStart = 0,\n boxEnd = 0;\n\n if (i === startLine) {\n boxStart = this.__charBounds[startLine][startChar].left;\n }\n if (i >= startLine && i < endLine) {\n boxEnd =\n isJustify && !this.isEndOfWrapping(i)\n ? this.width\n : this.getLineWidth(i) || 5; // WTF is this 5?\n } else if (i === endLine) {\n if (endChar === 0) {\n boxEnd = this.__charBounds[endLine][endChar].left;\n } else {\n var charSpacing = this._getWidthOfCharSpacing();\n boxEnd =\n this.__charBounds[endLine][endChar - 1].left +\n this.__charBounds[endLine][endChar - 1].width -\n charSpacing;\n }\n }\n realLineHeight = lineHeight;\n if (this.lineHeight < 1 || (i === endLine && this.lineHeight > 1)) {\n lineHeight /= this.lineHeight;\n }\n var drawStart = boundaries.left + lineOffset + boxStart,\n drawWidth = boxEnd - boxStart,\n drawHeight = lineHeight,\n extraTop = 0;\n if (this.inCompositionMode) {\n ctx.fillStyle = this.compositionColor || 'black';\n drawHeight = 1;\n extraTop = lineHeight;\n } else {\n ctx.fillStyle = this.selectionColor;\n }\n if (this.direction === 'rtl') {\n if (\n this.textAlign === 'right' ||\n this.textAlign === 'justify' ||\n this.textAlign === 'justify-right'\n ) {\n drawStart = this.width - drawStart - drawWidth;\n } else if (\n this.textAlign === 'left' ||\n this.textAlign === 'justify-left'\n ) {\n drawStart = boundaries.left + lineOffset - boxEnd;\n } else if (\n this.textAlign === 'center' ||\n this.textAlign === 'justify-center'\n ) {\n drawStart = boundaries.left + lineOffset - boxEnd;\n }\n }\n ctx.fillRect(\n drawStart,\n boundaries.top + boundaries.topOffset + extraTop,\n drawWidth,\n drawHeight\n );\n boundaries.topOffset += realLineHeight;\n }\n },\n\n /**\n * High level function to know the height of the cursor.\n * the currentChar is the one that precedes the cursor\n * Returns fontSize of char at the current cursor\n * Unused from the library, is for the end user\n * @return {Number} Character font size\n */\n getCurrentCharFontSize: function () {\n var cp = this._getCurrentCharIndex();\n return this.getValueOfPropertyAt(cp.l, cp.c, 'fontSize');\n },\n\n /**\n * High level function to know the color of the cursor.\n * the currentChar is the one that precedes the cursor\n * Returns color (fill) of char at the current cursor\n * if the text object has a pattern or gradient for filler, it will return that.\n * Unused by the library, is for the end user\n * @return {String | fabric.Gradient | fabric.Pattern} Character color (fill)\n */\n getCurrentCharColor: function () {\n var cp = this._getCurrentCharIndex();\n return this.getValueOfPropertyAt(cp.l, cp.c, 'fill');\n },\n\n /**\n * Returns the cursor position for the getCurrent.. functions\n * @private\n */\n _getCurrentCharIndex: function () {\n var cursorPosition = this.get2DCursorLocation(\n this.selectionStart,\n true\n ),\n charIndex =\n cursorPosition.charIndex > 0 ? cursorPosition.charIndex - 1 : 0;\n return { l: cursorPosition.lineIndex, c: charIndex };\n },\n }\n );\n\n /**\n * Returns fabric.IText instance from an object representation\n * @static\n * @memberOf fabric.IText\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.IText.fromObject = function (object) {\n var styles = fabric.util.stylesFromArray(object.styles, object.text);\n //copy object to prevent mutation\n var objCopy = Object.assign({}, object, { styles: styles });\n return fabric.Object._fromObject(fabric.IText, objCopy, {\n extraParam: 'text',\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\nimport { Point } from '../point.class';\nimport { removeFromArray } from '../util/internals';\n\n// extend this regex to support non english languages\nconst reNonWord = /[ \\n\\.,;!\\?\\-]/;\n\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.IText.prototype,\n /** @lends fabric.IText.prototype */ {\n /**\n * Initializes all the interactive behavior of IText\n */\n initBehavior: function () {\n this.initAddedHandler();\n this.initRemovedHandler();\n this.initCursorSelectionHandlers();\n this.initDoubleClickSimulation();\n this.mouseMoveHandler = this.mouseMoveHandler.bind(this);\n this.dragEnterHandler = this.dragEnterHandler.bind(this);\n this.dragOverHandler = this.dragOverHandler.bind(this);\n this.dragLeaveHandler = this.dragLeaveHandler.bind(this);\n this.dragEndHandler = this.dragEndHandler.bind(this);\n this.dropHandler = this.dropHandler.bind(this);\n this.on('dragenter', this.dragEnterHandler);\n this.on('dragover', this.dragOverHandler);\n this.on('dragleave', this.dragLeaveHandler);\n this.on('dragend', this.dragEndHandler);\n this.on('drop', this.dropHandler);\n },\n\n onDeselect: function () {\n this.isEditing && this.exitEditing();\n this.selected = false;\n },\n\n /**\n * Initializes \"added\" event handler\n */\n initAddedHandler: function () {\n var _this = this;\n this.on('added', function (opt) {\n // make sure we listen to the canvas added event\n var canvas = opt.target;\n if (canvas) {\n if (!canvas._hasITextHandlers) {\n canvas._hasITextHandlers = true;\n _this._initCanvasHandlers(canvas);\n }\n canvas._iTextInstances = canvas._iTextInstances || [];\n canvas._iTextInstances.push(_this);\n }\n });\n },\n\n initRemovedHandler: function () {\n var _this = this;\n this.on('removed', function (opt) {\n // make sure we listen to the canvas removed event\n var canvas = opt.target;\n if (canvas) {\n canvas._iTextInstances = canvas._iTextInstances || [];\n removeFromArray(canvas._iTextInstances, _this);\n if (canvas._iTextInstances.length === 0) {\n canvas._hasITextHandlers = false;\n _this._removeCanvasHandlers(canvas);\n }\n }\n });\n },\n\n /**\n * register canvas event to manage exiting on other instances\n * @private\n */\n _initCanvasHandlers: function (canvas) {\n canvas._mouseUpITextHandler = function () {\n if (canvas._iTextInstances) {\n canvas._iTextInstances.forEach(function (obj) {\n obj.__isMousedown = false;\n });\n }\n };\n canvas.on('mouse:up', canvas._mouseUpITextHandler);\n },\n\n /**\n * remove canvas event to manage exiting on other instances\n * @private\n */\n _removeCanvasHandlers: function (canvas) {\n canvas.off('mouse:up', canvas._mouseUpITextHandler);\n },\n\n /**\n * @private\n */\n _tick: function () {\n this._currentTickState = this._animateCursor(\n this,\n 1,\n this.cursorDuration,\n '_onTickComplete'\n );\n },\n\n /**\n * @private\n */\n _animateCursor: function (obj, targetOpacity, duration, completeMethod) {\n var tickState = {\n isAborted: false,\n abort: function () {\n this.isAborted = true;\n },\n };\n\n obj.animate('_currentCursorOpacity', targetOpacity, {\n duration: duration,\n onComplete: function () {\n if (!tickState.isAborted) {\n obj[completeMethod]();\n }\n },\n onChange: function () {\n // we do not want to animate a selection, only cursor\n if (obj.canvas && obj.selectionStart === obj.selectionEnd) {\n obj.renderCursorOrSelection();\n }\n },\n abort: function () {\n return tickState.isAborted;\n },\n });\n return tickState;\n },\n\n /**\n * @private\n */\n _onTickComplete: function () {\n var _this = this;\n\n if (this._cursorTimeout1) {\n clearTimeout(this._cursorTimeout1);\n }\n this._cursorTimeout1 = setTimeout(function () {\n _this._currentTickCompleteState = _this._animateCursor(\n _this,\n 0,\n this.cursorDuration / 2,\n '_tick'\n );\n }, 100);\n },\n\n /**\n * Initializes delayed cursor\n */\n initDelayedCursor: function (restart) {\n var _this = this,\n delay = restart ? 0 : this.cursorDelay;\n\n this.abortCursorAnimation();\n if (delay) {\n this._cursorTimeout2 = setTimeout(function () {\n _this._tick();\n }, delay);\n } else {\n this._tick();\n }\n },\n\n /**\n * Aborts cursor animation, clears all timeouts and clear textarea context if necessary\n */\n abortCursorAnimation: function () {\n var shouldClear =\n this._currentTickState || this._currentTickCompleteState;\n this._currentTickState && this._currentTickState.abort();\n this._currentTickCompleteState &&\n this._currentTickCompleteState.abort();\n\n clearTimeout(this._cursorTimeout1);\n clearTimeout(this._cursorTimeout2);\n\n this._currentCursorOpacity = 1;\n\n // make sure we clear context even if instance is not editing\n if (shouldClear) {\n this.clearContextTop();\n }\n },\n\n /**\n * Selects entire text\n * @return {fabric.IText} thisArg\n * @chainable\n */\n selectAll: function () {\n this.selectionStart = 0;\n this.selectionEnd = this._text.length;\n this._fireSelectionChanged();\n this._updateTextarea();\n return this;\n },\n\n /**\n * Returns selected text\n * @return {String}\n */\n getSelectedText: function () {\n return this._text\n .slice(this.selectionStart, this.selectionEnd)\n .join('');\n },\n\n /**\n * Find new selection index representing start of current word according to current selection index\n * @param {Number} startFrom Current selection index\n * @return {Number} New selection index\n */\n findWordBoundaryLeft: function (startFrom) {\n var offset = 0,\n index = startFrom - 1;\n\n // remove space before cursor first\n if (this._reSpace.test(this._text[index])) {\n while (this._reSpace.test(this._text[index])) {\n offset++;\n index--;\n }\n }\n while (/\\S/.test(this._text[index]) && index > -1) {\n offset++;\n index--;\n }\n\n return startFrom - offset;\n },\n\n /**\n * Find new selection index representing end of current word according to current selection index\n * @param {Number} startFrom Current selection index\n * @return {Number} New selection index\n */\n findWordBoundaryRight: function (startFrom) {\n var offset = 0,\n index = startFrom;\n\n // remove space after cursor first\n if (this._reSpace.test(this._text[index])) {\n while (this._reSpace.test(this._text[index])) {\n offset++;\n index++;\n }\n }\n while (/\\S/.test(this._text[index]) && index < this._text.length) {\n offset++;\n index++;\n }\n\n return startFrom + offset;\n },\n\n /**\n * Find new selection index representing start of current line according to current selection index\n * @param {Number} startFrom Current selection index\n * @return {Number} New selection index\n */\n findLineBoundaryLeft: function (startFrom) {\n var offset = 0,\n index = startFrom - 1;\n\n while (!/\\n/.test(this._text[index]) && index > -1) {\n offset++;\n index--;\n }\n\n return startFrom - offset;\n },\n\n /**\n * Find new selection index representing end of current line according to current selection index\n * @param {Number} startFrom Current selection index\n * @return {Number} New selection index\n */\n findLineBoundaryRight: function (startFrom) {\n var offset = 0,\n index = startFrom;\n\n while (!/\\n/.test(this._text[index]) && index < this._text.length) {\n offset++;\n index++;\n }\n\n return startFrom + offset;\n },\n\n /**\n * Finds index corresponding to beginning or end of a word\n * @param {Number} selectionStart Index of a character\n * @param {Number} direction 1 or -1\n * @return {Number} Index of the beginning or end of a word\n */\n searchWordBoundary: function (selectionStart, direction) {\n var text = this._text,\n index = this._reSpace.test(text[selectionStart])\n ? selectionStart - 1\n : selectionStart,\n _char = text[index];\n\n while (!reNonWord.test(_char) && index > 0 && index < text.length) {\n index += direction;\n _char = text[index];\n }\n if (reNonWord.test(_char)) {\n index += direction === 1 ? 0 : 1;\n }\n return index;\n },\n\n /**\n * Selects a word based on the index\n * @param {Number} selectionStart Index of a character\n */\n selectWord: function (selectionStart) {\n selectionStart = selectionStart || this.selectionStart;\n var newSelectionStart = this.searchWordBoundary(\n selectionStart,\n -1\n ) /* search backwards */,\n newSelectionEnd = this.searchWordBoundary(\n selectionStart,\n 1\n ); /* search forward */\n\n this.selectionStart = newSelectionStart;\n this.selectionEnd = newSelectionEnd;\n this._fireSelectionChanged();\n this._updateTextarea();\n this.renderCursorOrSelection();\n },\n\n /**\n * Selects a line based on the index\n * @param {Number} selectionStart Index of a character\n * @return {fabric.IText} thisArg\n * @chainable\n */\n selectLine: function (selectionStart) {\n selectionStart = selectionStart || this.selectionStart;\n var newSelectionStart = this.findLineBoundaryLeft(selectionStart),\n newSelectionEnd = this.findLineBoundaryRight(selectionStart);\n\n this.selectionStart = newSelectionStart;\n this.selectionEnd = newSelectionEnd;\n this._fireSelectionChanged();\n this._updateTextarea();\n return this;\n },\n\n /**\n * Enters editing state\n * @return {fabric.IText} thisArg\n * @chainable\n */\n enterEditing: function (e) {\n if (this.isEditing || !this.editable) {\n return;\n }\n if (this.canvas) {\n this.canvas.calcOffset();\n this.exitEditingOnOthers(this.canvas);\n }\n\n this.isEditing = true;\n\n this.initHiddenTextarea(e);\n this.hiddenTextarea.focus();\n this.hiddenTextarea.value = this.text;\n this._updateTextarea();\n this._saveEditingProps();\n this._setEditingProps();\n this._textBeforeEdit = this.text;\n\n this._tick();\n this.fire('editing:entered');\n this._fireSelectionChanged();\n if (!this.canvas) {\n return this;\n }\n this.canvas.fire('text:editing:entered', { target: this });\n this.initMouseMoveHandler();\n this.canvas.requestRenderAll();\n return this;\n },\n\n exitEditingOnOthers: function (canvas) {\n if (canvas._iTextInstances) {\n canvas._iTextInstances.forEach(function (obj) {\n obj.selected = false;\n if (obj.isEditing) {\n obj.exitEditing();\n }\n });\n }\n },\n\n /**\n * Initializes \"mousemove\" event handler\n */\n initMouseMoveHandler: function () {\n this.canvas.on('mouse:move', this.mouseMoveHandler);\n },\n\n /**\n * @private\n */\n mouseMoveHandler: function (options) {\n if (!this.__isMousedown || !this.isEditing) {\n return;\n }\n\n // regain focus\n fabric.document.activeElement !== this.hiddenTextarea &&\n this.hiddenTextarea.focus();\n\n var newSelectionStart = this.getSelectionStartFromPointer(options.e),\n currentStart = this.selectionStart,\n currentEnd = this.selectionEnd;\n if (\n (newSelectionStart !== this.__selectionStartOnMouseDown ||\n currentStart === currentEnd) &&\n (currentStart === newSelectionStart ||\n currentEnd === newSelectionStart)\n ) {\n return;\n }\n if (newSelectionStart > this.__selectionStartOnMouseDown) {\n this.selectionStart = this.__selectionStartOnMouseDown;\n this.selectionEnd = newSelectionStart;\n } else {\n this.selectionStart = newSelectionStart;\n this.selectionEnd = this.__selectionStartOnMouseDown;\n }\n if (\n this.selectionStart !== currentStart ||\n this.selectionEnd !== currentEnd\n ) {\n this.restartCursorIfNeeded();\n this._fireSelectionChanged();\n this._updateTextarea();\n this.renderCursorOrSelection();\n }\n },\n\n /**\n * Override to customize the drag image\n * https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer/setDragImage\n * @param {DragEvent} e\n * @param {object} data\n * @param {number} data.selectionStart\n * @param {number} data.selectionEnd\n * @param {string} data.text\n * @param {string} data.value selected text\n */\n setDragImage: function (e, data) {\n var t = this.calcTransformMatrix();\n var flipFactor = new Point(this.flipX ? -1 : 1, this.flipY ? -1 : 1);\n var boundaries = this._getCursorBoundaries(data.selectionStart);\n var selectionPosition = new Point(\n boundaries.left + boundaries.leftOffset,\n boundaries.top + boundaries.topOffset\n ).multiply(flipFactor);\n var pos = fabric.util.transformPoint(selectionPosition, t);\n var pointer = this.canvas.getPointer(e);\n var diff = pointer.subtract(pos);\n var enableRetinaScaling = this.canvas._isRetinaScaling();\n var retinaScaling = this.canvas.getRetinaScaling();\n var bbox = this.getBoundingRect(true);\n var correction = pos.subtract(new Point(bbox.left, bbox.top));\n var offset = correction.add(diff).scalarMultiply(retinaScaling);\n // prepare instance for drag image snapshot by making all non selected text invisible\n var bgc = this.backgroundColor;\n var styles = fabric.util.object.clone(this.styles, true);\n delete this.backgroundColor;\n var styleOverride = {\n fill: 'transparent',\n textBackgroundColor: 'transparent',\n };\n this.setSelectionStyles(styleOverride, 0, data.selectionStart);\n this.setSelectionStyles(\n styleOverride,\n data.selectionEnd,\n data.text.length\n );\n var dragImage = this.toCanvasElement({\n enableRetinaScaling: enableRetinaScaling,\n });\n this.backgroundColor = bgc;\n this.styles = styles;\n // handle retina scaling\n if (enableRetinaScaling && retinaScaling > 1) {\n var c = fabric.util.createCanvasElement();\n c.width = dragImage.width / retinaScaling;\n c.height = dragImage.height / retinaScaling;\n var ctx = c.getContext('2d');\n ctx.scale(1 / retinaScaling, 1 / retinaScaling);\n ctx.drawImage(dragImage, 0, 0);\n dragImage = c;\n }\n this.__dragImageDisposer && this.__dragImageDisposer();\n this.__dragImageDisposer = function () {\n dragImage.remove();\n };\n // position drag image offsecreen\n fabric.util.setStyle(dragImage, {\n position: 'absolute',\n left: -dragImage.width + 'px',\n border: 'none',\n });\n fabric.document.body.appendChild(dragImage);\n e.dataTransfer.setDragImage(dragImage, offset.x, offset.y);\n },\n\n /**\n * support native like text dragging\n * @private\n * @param {DragEvent} e\n * @returns {boolean} should handle event\n */\n onDragStart: function (e) {\n this.__dragStartFired = true;\n if (this.__isDragging) {\n var selection = (this.__dragStartSelection = {\n selectionStart: this.selectionStart,\n selectionEnd: this.selectionEnd,\n });\n var value = this._text\n .slice(selection.selectionStart, selection.selectionEnd)\n .join('');\n var data = Object.assign(\n { text: this.text, value: value },\n selection\n );\n e.dataTransfer.setData('text/plain', value);\n e.dataTransfer.setData(\n 'application/fabric',\n JSON.stringify({\n value: value,\n styles: this.getSelectionStyles(\n selection.selectionStart,\n selection.selectionEnd,\n true\n ),\n })\n );\n e.dataTransfer.effectAllowed = 'copyMove';\n this.setDragImage(e, data);\n }\n this.abortCursorAnimation();\n return this.__isDragging;\n },\n\n /**\n * Override to customize drag and drop behavior\n * @public\n * @param {DragEvent} e\n * @returns {boolean}\n */\n canDrop: function (e) {\n if (this.editable && !this.__corner) {\n if (this.__isDragging && this.__dragStartSelection) {\n // drag source trying to drop over itself\n // allow dropping only outside of drag start selection\n var index = this.getSelectionStartFromPointer(e);\n var dragStartSelection = this.__dragStartSelection;\n return (\n index < dragStartSelection.selectionStart ||\n index > dragStartSelection.selectionEnd\n );\n }\n return true;\n }\n return false;\n },\n\n /**\n * support native like text dragging\n * @private\n * @param {object} options\n * @param {DragEvent} options.e\n */\n dragEnterHandler: function (options) {\n var e = options.e;\n var canDrop = !e.defaultPrevented && this.canDrop(e);\n if (!this.__isDraggingOver && canDrop) {\n this.__isDraggingOver = true;\n }\n },\n\n /**\n * support native like text dragging\n * @private\n * @param {object} options\n * @param {DragEvent} options.e\n */\n dragOverHandler: function (options) {\n var e = options.e;\n var canDrop = !e.defaultPrevented && this.canDrop(e);\n if (!this.__isDraggingOver && canDrop) {\n this.__isDraggingOver = true;\n } else if (this.__isDraggingOver && !canDrop) {\n // drop state has changed\n this.__isDraggingOver = false;\n }\n if (this.__isDraggingOver) {\n // can be dropped, inform browser\n e.preventDefault();\n // inform event subscribers\n options.canDrop = true;\n options.dropTarget = this;\n // find cursor under the drag part.\n }\n },\n\n /**\n * support native like text dragging\n * @private\n */\n dragLeaveHandler: function () {\n if (this.__isDraggingOver || this.__isDragging) {\n this.__isDraggingOver = false;\n }\n },\n\n /**\n * support native like text dragging\n * fired only on the drag source\n * handle changes to the drag source in case of a drop on another object or a cancellation\n * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#finishing_a_drag\n * @private\n * @param {object} options\n * @param {DragEvent} options.e\n */\n dragEndHandler: function (options) {\n var e = options.e;\n if (this.__isDragging && this.__dragStartFired) {\n // once the drop event finishes we check if we need to change the drag source\n // if the drag source received the drop we bail out\n if (this.__dragStartSelection) {\n var selectionStart = this.__dragStartSelection.selectionStart;\n var selectionEnd = this.__dragStartSelection.selectionEnd;\n var dropEffect = e.dataTransfer.dropEffect;\n if (dropEffect === 'none') {\n this.selectionStart = selectionStart;\n this.selectionEnd = selectionEnd;\n this._updateTextarea();\n } else {\n this.clearContextTop();\n if (dropEffect === 'move') {\n this.insertChars('', null, selectionStart, selectionEnd);\n this.selectionStart = this.selectionEnd = selectionStart;\n this.hiddenTextarea && (this.hiddenTextarea.value = this.text);\n this._updateTextarea();\n this.fire('changed', {\n index: selectionStart,\n action: 'dragend',\n });\n this.canvas.fire('text:changed', { target: this });\n this.canvas.requestRenderAll();\n }\n this.exitEditing();\n // disable mouse up logic\n this.__lastSelected = false;\n }\n }\n }\n\n this.__dragImageDisposer && this.__dragImageDisposer();\n delete this.__dragImageDisposer;\n delete this.__dragStartSelection;\n this.__isDraggingOver = false;\n },\n\n /**\n * support native like text dragging\n *\n * Override the `text/plain | application/fabric` types of {@link DragEvent#dataTransfer}\n * in order to change the drop value or to customize styling respectively, by listening to the `drop:before` event\n * https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Drag_operations#performing_a_drop\n * @private\n * @param {object} options\n * @param {DragEvent} options.e\n */\n dropHandler: function (options) {\n var e = options.e,\n didDrop = e.defaultPrevented;\n this.__isDraggingOver = false;\n // inform browser that the drop has been accepted\n e.preventDefault();\n var insert = e.dataTransfer.getData('text/plain');\n if (insert && !didDrop) {\n var insertAt = this.getSelectionStartFromPointer(e);\n var data = e.dataTransfer.types.includes('application/fabric')\n ? JSON.parse(e.dataTransfer.getData('application/fabric'))\n : {};\n var styles = data.styles;\n var trailing = insert[Math.max(0, insert.length - 1)];\n var selectionStartOffset = 0;\n // drag and drop in same instance\n if (this.__dragStartSelection) {\n var selectionStart = this.__dragStartSelection.selectionStart;\n var selectionEnd = this.__dragStartSelection.selectionEnd;\n if (insertAt > selectionStart && insertAt <= selectionEnd) {\n insertAt = selectionStart;\n } else if (insertAt > selectionEnd) {\n insertAt -= selectionEnd - selectionStart;\n }\n this.insertChars('', null, selectionStart, selectionEnd);\n // prevent `dragend` from handling event\n delete this.__dragStartSelection;\n }\n // remove redundant line break\n if (\n this._reNewline.test(trailing) &&\n (this._reNewline.test(this._text[insertAt]) ||\n insertAt === this._text.length)\n ) {\n insert = insert.trimEnd();\n }\n // inform subscribers\n options.didDrop = true;\n options.dropTarget = this;\n // finalize\n this.insertChars(insert, styles, insertAt);\n // can this part be moved in an outside event? andrea to check.\n this.canvas.setActiveObject(this);\n this.enterEditing();\n this.selectionStart = Math.min(\n insertAt + selectionStartOffset,\n this._text.length\n );\n this.selectionEnd = Math.min(\n this.selectionStart + insert.length,\n this._text.length\n );\n this.hiddenTextarea && (this.hiddenTextarea.value = this.text);\n this._updateTextarea();\n this.fire('changed', {\n index: insertAt + selectionStartOffset,\n action: 'drop',\n });\n this.canvas.fire('text:changed', { target: this });\n this.canvas.contextTopDirty = true;\n this.canvas.requestRenderAll();\n }\n },\n\n /**\n * @private\n */\n _setEditingProps: function () {\n this.hoverCursor = 'text';\n\n if (this.canvas) {\n this.canvas.defaultCursor = this.canvas.moveCursor = 'text';\n }\n\n this.borderColor = this.editingBorderColor;\n this.hasControls = this.selectable = false;\n this.lockMovementX = this.lockMovementY = true;\n },\n\n /**\n * convert from textarea to grapheme indexes\n */\n fromStringToGraphemeSelection: function (start, end, text) {\n var smallerTextStart = text.slice(0, start),\n graphemeStart = this.graphemeSplit(smallerTextStart).length;\n if (start === end) {\n return { selectionStart: graphemeStart, selectionEnd: graphemeStart };\n }\n var smallerTextEnd = text.slice(start, end),\n graphemeEnd = this.graphemeSplit(smallerTextEnd).length;\n return {\n selectionStart: graphemeStart,\n selectionEnd: graphemeStart + graphemeEnd,\n };\n },\n\n /**\n * convert from fabric to textarea values\n */\n fromGraphemeToStringSelection: function (start, end, _text) {\n var smallerTextStart = _text.slice(0, start),\n graphemeStart = smallerTextStart.join('').length;\n if (start === end) {\n return { selectionStart: graphemeStart, selectionEnd: graphemeStart };\n }\n var smallerTextEnd = _text.slice(start, end),\n graphemeEnd = smallerTextEnd.join('').length;\n return {\n selectionStart: graphemeStart,\n selectionEnd: graphemeStart + graphemeEnd,\n };\n },\n\n /**\n * @private\n */\n _updateTextarea: function () {\n this.cursorOffsetCache = {};\n if (!this.hiddenTextarea) {\n return;\n }\n if (!this.inCompositionMode) {\n var newSelection = this.fromGraphemeToStringSelection(\n this.selectionStart,\n this.selectionEnd,\n this._text\n );\n this.hiddenTextarea.selectionStart = newSelection.selectionStart;\n this.hiddenTextarea.selectionEnd = newSelection.selectionEnd;\n }\n this.updateTextareaPosition();\n },\n\n /**\n * @private\n */\n updateFromTextArea: function () {\n if (!this.hiddenTextarea) {\n return;\n }\n this.cursorOffsetCache = {};\n this.text = this.hiddenTextarea.value;\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n this.setCoords();\n }\n var newSelection = this.fromStringToGraphemeSelection(\n this.hiddenTextarea.selectionStart,\n this.hiddenTextarea.selectionEnd,\n this.hiddenTextarea.value\n );\n this.selectionEnd = this.selectionStart = newSelection.selectionEnd;\n if (!this.inCompositionMode) {\n this.selectionStart = newSelection.selectionStart;\n }\n this.updateTextareaPosition();\n },\n\n /**\n * @private\n */\n updateTextareaPosition: function () {\n if (this.selectionStart === this.selectionEnd) {\n var style = this._calcTextareaPosition();\n this.hiddenTextarea.style.left = style.left;\n this.hiddenTextarea.style.top = style.top;\n }\n },\n\n /**\n * @private\n * @return {Object} style contains style for hiddenTextarea\n */\n _calcTextareaPosition: function () {\n if (!this.canvas) {\n return { x: 1, y: 1 };\n }\n var desiredPosition = this.inCompositionMode\n ? this.compositionStart\n : this.selectionStart,\n boundaries = this._getCursorBoundaries(desiredPosition),\n cursorLocation = this.get2DCursorLocation(desiredPosition),\n lineIndex = cursorLocation.lineIndex,\n charIndex = cursorLocation.charIndex,\n charHeight =\n this.getValueOfPropertyAt(lineIndex, charIndex, 'fontSize') *\n this.lineHeight,\n leftOffset = boundaries.leftOffset,\n m = this.calcTransformMatrix(),\n p = {\n x: boundaries.left + leftOffset,\n y: boundaries.top + boundaries.topOffset + charHeight,\n },\n retinaScaling = this.canvas.getRetinaScaling(),\n upperCanvas = this.canvas.upperCanvasEl,\n upperCanvasWidth = upperCanvas.width / retinaScaling,\n upperCanvasHeight = upperCanvas.height / retinaScaling,\n maxWidth = upperCanvasWidth - charHeight,\n maxHeight = upperCanvasHeight - charHeight,\n scaleX = upperCanvas.clientWidth / upperCanvasWidth,\n scaleY = upperCanvas.clientHeight / upperCanvasHeight;\n\n p = fabric.util.transformPoint(p, m);\n p = fabric.util.transformPoint(p, this.canvas.viewportTransform);\n p.x *= scaleX;\n p.y *= scaleY;\n if (p.x < 0) {\n p.x = 0;\n }\n if (p.x > maxWidth) {\n p.x = maxWidth;\n }\n if (p.y < 0) {\n p.y = 0;\n }\n if (p.y > maxHeight) {\n p.y = maxHeight;\n }\n\n // add canvas offset on document\n p.x += this.canvas._offset.left;\n p.y += this.canvas._offset.top;\n\n return {\n left: p.x + 'px',\n top: p.y + 'px',\n fontSize: charHeight + 'px',\n charHeight: charHeight,\n };\n },\n\n /**\n * @private\n */\n _saveEditingProps: function () {\n this._savedProps = {\n hasControls: this.hasControls,\n borderColor: this.borderColor,\n lockMovementX: this.lockMovementX,\n lockMovementY: this.lockMovementY,\n hoverCursor: this.hoverCursor,\n selectable: this.selectable,\n defaultCursor: this.canvas && this.canvas.defaultCursor,\n moveCursor: this.canvas && this.canvas.moveCursor,\n };\n },\n\n /**\n * @private\n */\n _restoreEditingProps: function () {\n if (!this._savedProps) {\n return;\n }\n\n this.hoverCursor = this._savedProps.hoverCursor;\n this.hasControls = this._savedProps.hasControls;\n this.borderColor = this._savedProps.borderColor;\n this.selectable = this._savedProps.selectable;\n this.lockMovementX = this._savedProps.lockMovementX;\n this.lockMovementY = this._savedProps.lockMovementY;\n\n if (this.canvas) {\n this.canvas.defaultCursor = this._savedProps.defaultCursor;\n this.canvas.moveCursor = this._savedProps.moveCursor;\n }\n\n delete this._savedProps;\n },\n\n /**\n * Exits from editing state\n * @return {fabric.IText} thisArg\n * @chainable\n */\n exitEditing: function () {\n var isTextChanged = this._textBeforeEdit !== this.text;\n var hiddenTextarea = this.hiddenTextarea;\n this.selected = false;\n this.isEditing = false;\n\n this.selectionEnd = this.selectionStart;\n\n if (hiddenTextarea) {\n hiddenTextarea.blur && hiddenTextarea.blur();\n hiddenTextarea.parentNode &&\n hiddenTextarea.parentNode.removeChild(hiddenTextarea);\n }\n this.hiddenTextarea = null;\n this.abortCursorAnimation();\n this._restoreEditingProps();\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n this.setCoords();\n }\n this.fire('editing:exited');\n isTextChanged && this.fire('modified');\n if (this.canvas) {\n this.canvas.off('mouse:move', this.mouseMoveHandler);\n this.canvas.fire('text:editing:exited', { target: this });\n isTextChanged &&\n this.canvas.fire('object:modified', { target: this });\n }\n return this;\n },\n\n /**\n * @private\n */\n _removeExtraneousStyles: function () {\n for (var prop in this.styles) {\n if (!this._textLines[prop]) {\n delete this.styles[prop];\n }\n }\n },\n\n /**\n * remove and reflow a style block from start to end.\n * @param {Number} start linear start position for removal (included in removal)\n * @param {Number} end linear end position for removal ( excluded from removal )\n */\n removeStyleFromTo: function (start, end) {\n var cursorStart = this.get2DCursorLocation(start, true),\n cursorEnd = this.get2DCursorLocation(end, true),\n lineStart = cursorStart.lineIndex,\n charStart = cursorStart.charIndex,\n lineEnd = cursorEnd.lineIndex,\n charEnd = cursorEnd.charIndex,\n i,\n styleObj;\n if (lineStart !== lineEnd) {\n // step1 remove the trailing of lineStart\n if (this.styles[lineStart]) {\n for (\n i = charStart;\n i < this._unwrappedTextLines[lineStart].length;\n i++\n ) {\n delete this.styles[lineStart][i];\n }\n }\n // step2 move the trailing of lineEnd to lineStart if needed\n if (this.styles[lineEnd]) {\n for (\n i = charEnd;\n i < this._unwrappedTextLines[lineEnd].length;\n i++\n ) {\n styleObj = this.styles[lineEnd][i];\n if (styleObj) {\n this.styles[lineStart] || (this.styles[lineStart] = {});\n this.styles[lineStart][charStart + i - charEnd] = styleObj;\n }\n }\n }\n // step3 detects lines will be completely removed.\n for (i = lineStart + 1; i <= lineEnd; i++) {\n delete this.styles[i];\n }\n // step4 shift remaining lines.\n this.shiftLineStyles(lineEnd, lineStart - lineEnd);\n } else {\n // remove and shift left on the same line\n if (this.styles[lineStart]) {\n styleObj = this.styles[lineStart];\n var diff = charEnd - charStart,\n numericChar,\n _char;\n for (i = charStart; i < charEnd; i++) {\n delete styleObj[i];\n }\n for (_char in this.styles[lineStart]) {\n numericChar = parseInt(_char, 10);\n if (numericChar >= charEnd) {\n styleObj[numericChar - diff] = styleObj[_char];\n delete styleObj[_char];\n }\n }\n }\n }\n },\n\n /**\n * Shifts line styles up or down\n * @param {Number} lineIndex Index of a line\n * @param {Number} offset Can any number?\n */\n shiftLineStyles: function (lineIndex, offset) {\n // shift all line styles by offset upward or downward\n // do not clone deep. we need new array, not new style objects\n var clonedStyles = Object.assign({}, this.styles);\n for (var line in this.styles) {\n var numericLine = parseInt(line, 10);\n if (numericLine > lineIndex) {\n this.styles[numericLine + offset] = clonedStyles[numericLine];\n if (!clonedStyles[numericLine - offset]) {\n delete this.styles[numericLine];\n }\n }\n }\n },\n\n restartCursorIfNeeded: function () {\n if (\n !this._currentTickState ||\n this._currentTickState.isAborted ||\n !this._currentTickCompleteState ||\n this._currentTickCompleteState.isAborted\n ) {\n this.initDelayedCursor();\n }\n },\n\n /**\n * Handle insertion of more consecutive style lines for when one or more\n * newlines gets added to the text. Since current style needs to be shifted\n * first we shift the current style of the number lines needed, then we add\n * new lines from the last to the first.\n * @param {Number} lineIndex Index of a line\n * @param {Number} charIndex Index of a char\n * @param {Number} qty number of lines to add\n * @param {Array} copiedStyle Array of objects styles\n */\n insertNewlineStyleObject: function (\n lineIndex,\n charIndex,\n qty,\n copiedStyle\n ) {\n var currentCharStyle,\n newLineStyles = {},\n somethingAdded = false,\n isEndOfLine =\n this._unwrappedTextLines[lineIndex].length === charIndex;\n\n qty || (qty = 1);\n this.shiftLineStyles(lineIndex, qty);\n if (this.styles[lineIndex]) {\n currentCharStyle =\n this.styles[lineIndex][charIndex === 0 ? charIndex : charIndex - 1];\n }\n // we clone styles of all chars\n // after cursor onto the current line\n for (var index in this.styles[lineIndex]) {\n var numIndex = parseInt(index, 10);\n if (numIndex >= charIndex) {\n somethingAdded = true;\n newLineStyles[numIndex - charIndex] = this.styles[lineIndex][index];\n // remove lines from the previous line since they're on a new line now\n if (!(isEndOfLine && charIndex === 0)) {\n delete this.styles[lineIndex][index];\n }\n }\n }\n var styleCarriedOver = false;\n if (somethingAdded && !isEndOfLine) {\n // if is end of line, the extra style we copied\n // is probably not something we want\n this.styles[lineIndex + qty] = newLineStyles;\n styleCarriedOver = true;\n }\n if (styleCarriedOver) {\n // skip the last line of since we already prepared it.\n qty--;\n }\n // for the all the lines or all the other lines\n // we clone current char style onto the next (otherwise empty) line\n while (qty > 0) {\n if (copiedStyle && copiedStyle[qty - 1]) {\n this.styles[lineIndex + qty] = {\n 0: Object.assign({}, copiedStyle[qty - 1]),\n };\n } else if (currentCharStyle) {\n this.styles[lineIndex + qty] = {\n 0: Object.assign({}, currentCharStyle),\n };\n } else {\n delete this.styles[lineIndex + qty];\n }\n qty--;\n }\n this._forceClearCache = true;\n },\n\n /**\n * Inserts style object for a given line/char index\n * @param {Number} lineIndex Index of a line\n * @param {Number} charIndex Index of a char\n * @param {Number} quantity number Style object to insert, if given\n * @param {Array} copiedStyle array of style objects\n */\n insertCharStyleObject: function (\n lineIndex,\n charIndex,\n quantity,\n copiedStyle\n ) {\n if (!this.styles) {\n this.styles = {};\n }\n var currentLineStyles = this.styles[lineIndex],\n currentLineStylesCloned = currentLineStyles\n ? Object.assign({}, currentLineStyles)\n : {};\n\n quantity || (quantity = 1);\n // shift all char styles by quantity forward\n // 0,1,2,3 -> (charIndex=2) -> 0,1,3,4 -> (insert 2) -> 0,1,2,3,4\n for (var index in currentLineStylesCloned) {\n var numericIndex = parseInt(index, 10);\n if (numericIndex >= charIndex) {\n currentLineStyles[numericIndex + quantity] =\n currentLineStylesCloned[numericIndex];\n // only delete the style if there was nothing moved there\n if (!currentLineStylesCloned[numericIndex - quantity]) {\n delete currentLineStyles[numericIndex];\n }\n }\n }\n this._forceClearCache = true;\n if (copiedStyle) {\n while (quantity--) {\n if (!Object.keys(copiedStyle[quantity]).length) {\n continue;\n }\n if (!this.styles[lineIndex]) {\n this.styles[lineIndex] = {};\n }\n this.styles[lineIndex][charIndex + quantity] = Object.assign(\n {},\n copiedStyle[quantity]\n );\n }\n return;\n }\n if (!currentLineStyles) {\n return;\n }\n var newStyle = currentLineStyles[charIndex ? charIndex - 1 : 1];\n while (newStyle && quantity--) {\n this.styles[lineIndex][charIndex + quantity] = Object.assign(\n {},\n newStyle\n );\n }\n },\n\n /**\n * Inserts style object(s)\n * @param {Array} insertedText Characters at the location where style is inserted\n * @param {Number} start cursor index for inserting style\n * @param {Array} [copiedStyle] array of style objects to insert.\n */\n insertNewStyleBlock: function (insertedText, start, copiedStyle) {\n var cursorLoc = this.get2DCursorLocation(start, true),\n addedLines = [0],\n linesLength = 0;\n // get an array of how many char per lines are being added.\n for (var i = 0; i < insertedText.length; i++) {\n if (insertedText[i] === '\\n') {\n linesLength++;\n addedLines[linesLength] = 0;\n } else {\n addedLines[linesLength]++;\n }\n }\n // for the first line copy the style from the current char position.\n if (addedLines[0] > 0) {\n this.insertCharStyleObject(\n cursorLoc.lineIndex,\n cursorLoc.charIndex,\n addedLines[0],\n copiedStyle\n );\n copiedStyle = copiedStyle && copiedStyle.slice(addedLines[0] + 1);\n }\n linesLength &&\n this.insertNewlineStyleObject(\n cursorLoc.lineIndex,\n cursorLoc.charIndex + addedLines[0],\n linesLength\n );\n for (var i = 1; i < linesLength; i++) {\n if (addedLines[i] > 0) {\n this.insertCharStyleObject(\n cursorLoc.lineIndex + i,\n 0,\n addedLines[i],\n copiedStyle\n );\n } else if (copiedStyle) {\n // this test is required in order to close #6841\n // when a pasted buffer begins with a newline then\n // this.styles[cursorLoc.lineIndex + i] and copiedStyle[0]\n // may be undefined for some reason\n if (this.styles[cursorLoc.lineIndex + i] && copiedStyle[0]) {\n this.styles[cursorLoc.lineIndex + i][0] = copiedStyle[0];\n }\n }\n copiedStyle = copiedStyle && copiedStyle.slice(addedLines[i] + 1);\n }\n // we use i outside the loop to get it like linesLength\n if (addedLines[i] > 0) {\n this.insertCharStyleObject(\n cursorLoc.lineIndex + i,\n 0,\n addedLines[i],\n copiedStyle\n );\n }\n },\n\n /**\n * Set the selectionStart and selectionEnd according to the new position of cursor\n * mimic the key - mouse navigation when shift is pressed.\n */\n setSelectionStartEndWithShift: function (start, end, newSelection) {\n if (newSelection <= start) {\n if (end === start) {\n this._selectionDirection = 'left';\n } else if (this._selectionDirection === 'right') {\n this._selectionDirection = 'left';\n this.selectionEnd = start;\n }\n this.selectionStart = newSelection;\n } else if (newSelection > start && newSelection < end) {\n if (this._selectionDirection === 'right') {\n this.selectionEnd = newSelection;\n } else {\n this.selectionStart = newSelection;\n }\n } else {\n // newSelection is > selection start and end\n if (end === start) {\n this._selectionDirection = 'right';\n } else if (this._selectionDirection === 'left') {\n this._selectionDirection = 'right';\n this.selectionStart = end;\n }\n this.selectionEnd = newSelection;\n }\n },\n\n setSelectionInBoundaries: function () {\n var length = this.text.length;\n if (this.selectionStart > length) {\n this.selectionStart = length;\n } else if (this.selectionStart < 0) {\n this.selectionStart = 0;\n }\n if (this.selectionEnd > length) {\n this.selectionEnd = length;\n } else if (this.selectionEnd < 0) {\n this.selectionEnd = 0;\n }\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.IText.prototype,\n /** @lends fabric.IText.prototype */ {\n /**\n * Initializes \"dbclick\" event handler\n */\n initDoubleClickSimulation: function () {\n // for double click\n this.__lastClickTime = +new Date();\n\n // for triple click\n this.__lastLastClickTime = +new Date();\n\n this.__lastPointer = {};\n\n this.on('mousedown', this.onMouseDown);\n },\n\n /**\n * Default event handler to simulate triple click\n * @private\n */\n onMouseDown: function (options) {\n if (!this.canvas) {\n return;\n }\n this.__newClickTime = +new Date();\n var newPointer = options.pointer;\n if (this.isTripleClick(newPointer)) {\n this.fire('tripleclick', options);\n this._stopEvent(options.e);\n }\n this.__lastLastClickTime = this.__lastClickTime;\n this.__lastClickTime = this.__newClickTime;\n this.__lastPointer = newPointer;\n this.__lastIsEditing = this.isEditing;\n this.__lastSelected = this.selected;\n },\n\n isTripleClick: function (newPointer) {\n return (\n this.__newClickTime - this.__lastClickTime < 500 &&\n this.__lastClickTime - this.__lastLastClickTime < 500 &&\n this.__lastPointer.x === newPointer.x &&\n this.__lastPointer.y === newPointer.y\n );\n },\n\n /**\n * @private\n */\n _stopEvent: function (e) {\n e.preventDefault && e.preventDefault();\n e.stopPropagation && e.stopPropagation();\n },\n\n /**\n * Initializes event handlers related to cursor or selection\n */\n initCursorSelectionHandlers: function () {\n this.initMousedownHandler();\n this.initMouseupHandler();\n this.initClicks();\n },\n\n /**\n * Default handler for double click, select a word\n */\n doubleClickHandler: function (options) {\n if (!this.isEditing) {\n return;\n }\n this.selectWord(this.getSelectionStartFromPointer(options.e));\n },\n\n /**\n * Default handler for triple click, select a line\n */\n tripleClickHandler: function (options) {\n if (!this.isEditing) {\n return;\n }\n this.selectLine(this.getSelectionStartFromPointer(options.e));\n },\n\n /**\n * Initializes double and triple click event handlers\n */\n initClicks: function () {\n this.on('mousedblclick', this.doubleClickHandler);\n this.on('tripleclick', this.tripleClickHandler);\n },\n\n /**\n * Default event handler for the basic functionalities needed on _mouseDown\n * can be overridden to do something different.\n * Scope of this implementation is: find the click position, set selectionStart\n * find selectionEnd, initialize the drawing of either cursor or selection area\n * initializing a mousedDown on a text area will cancel fabricjs knowledge of\n * current compositionMode. It will be set to false.\n */\n _mouseDownHandler: function (options) {\n if (\n !this.canvas ||\n !this.editable ||\n (options.e.button && options.e.button !== 1)\n ) {\n return;\n }\n\n this.__isMousedown = true;\n\n if (this.selected) {\n this.inCompositionMode = false;\n this.setCursorByClick(options.e);\n }\n\n if (this.isEditing) {\n this.__selectionStartOnMouseDown = this.selectionStart;\n if (this.selectionStart === this.selectionEnd) {\n this.abortCursorAnimation();\n }\n this.renderCursorOrSelection();\n }\n },\n\n /**\n * Default event handler for the basic functionalities needed on mousedown:before\n * can be overridden to do something different.\n * Scope of this implementation is: verify the object is already selected when mousing down\n */\n _mouseDownHandlerBefore: function (options) {\n if (\n !this.canvas ||\n !this.editable ||\n (options.e.button && options.e.button !== 1)\n ) {\n return;\n }\n // we want to avoid that an object that was selected and then becomes unselectable,\n // may trigger editing mode in some way.\n this.selected = this === this.canvas._activeObject;\n // text dragging logic\n var newSelection = this.getSelectionStartFromPointer(options.e);\n this.__isDragging =\n this.isEditing &&\n newSelection >= this.selectionStart &&\n newSelection <= this.selectionEnd &&\n this.selectionStart < this.selectionEnd;\n },\n\n /**\n * Initializes \"mousedown\" event handler\n */\n initMousedownHandler: function () {\n this.on('mousedown', this._mouseDownHandler);\n this.on('mousedown:before', this._mouseDownHandlerBefore);\n },\n\n /**\n * Initializes \"mouseup\" event handler\n */\n initMouseupHandler: function () {\n this.on('mouseup', this.mouseUpHandler);\n },\n\n /**\n * standard handler for mouse up, overridable\n * @private\n */\n mouseUpHandler: function (options) {\n this.__isMousedown = false;\n if (\n !this.editable ||\n (this.group && !this.group.interactive) ||\n (options.transform && options.transform.actionPerformed) ||\n (options.e.button && options.e.button !== 1)\n ) {\n return;\n }\n\n if (this.canvas) {\n var currentActive = this.canvas._activeObject;\n if (currentActive && currentActive !== this) {\n // avoid running this logic when there is an active object\n // this because is possible with shift click and fast clicks,\n // to rapidly deselect and reselect this object and trigger an enterEdit\n return;\n }\n }\n\n if (this.__lastSelected && !this.__corner) {\n this.selected = false;\n this.__lastSelected = false;\n this.enterEditing(options.e);\n if (this.selectionStart === this.selectionEnd) {\n this.initDelayedCursor(true);\n } else {\n this.renderCursorOrSelection();\n }\n } else {\n this.selected = true;\n }\n },\n\n /**\n * Changes cursor location in a text depending on passed pointer (x/y) object\n * @param {Event} e Event object\n */\n setCursorByClick: function (e) {\n var newSelection = this.getSelectionStartFromPointer(e),\n start = this.selectionStart,\n end = this.selectionEnd;\n if (e.shiftKey) {\n this.setSelectionStartEndWithShift(start, end, newSelection);\n } else {\n this.selectionStart = newSelection;\n this.selectionEnd = newSelection;\n }\n if (this.isEditing) {\n this._fireSelectionChanged();\n this._updateTextarea();\n }\n },\n\n /**\n * Returns index of a character corresponding to where an object was clicked\n * @param {Event} e Event object\n * @return {Number} Index of a character\n */\n getSelectionStartFromPointer: function (e) {\n var mouseOffset = this.getLocalPointer(e),\n prevWidth = 0,\n width = 0,\n height = 0,\n charIndex = 0,\n lineIndex = 0,\n lineLeftOffset,\n line;\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n if (height <= mouseOffset.y) {\n height += this.getHeightOfLine(i) * this.scaleY;\n lineIndex = i;\n if (i > 0) {\n charIndex +=\n this._textLines[i - 1].length +\n this.missingNewlineOffset(i - 1);\n }\n } else {\n break;\n }\n }\n lineLeftOffset = Math.abs(this._getLineLeftOffset(lineIndex));\n width = lineLeftOffset * this.scaleX;\n line = this._textLines[lineIndex];\n // handling of RTL: in order to get things work correctly,\n // we assume RTL writing is mirrored compared to LTR writing.\n // so in position detection we mirror the X offset, and when is time\n // of rendering it, we mirror it again.\n if (this.direction === 'rtl') {\n mouseOffset.x = this.width * this.scaleX - mouseOffset.x;\n }\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n prevWidth = width;\n // i removed something about flipX here, check.\n width += this.__charBounds[lineIndex][j].kernedWidth * this.scaleX;\n if (width <= mouseOffset.x) {\n charIndex++;\n } else {\n break;\n }\n }\n return this._getNewSelectionStartFromOffset(\n mouseOffset,\n prevWidth,\n width,\n charIndex,\n jlen\n );\n },\n\n /**\n * @private\n */\n _getNewSelectionStartFromOffset: function (\n mouseOffset,\n prevWidth,\n width,\n index,\n jlen\n ) {\n // we need Math.abs because when width is after the last char, the offset is given as 1, while is 0\n var distanceBtwLastCharAndCursor = mouseOffset.x - prevWidth,\n distanceBtwNextCharAndCursor = width - mouseOffset.x,\n offset =\n distanceBtwNextCharAndCursor > distanceBtwLastCharAndCursor ||\n distanceBtwNextCharAndCursor < 0\n ? 0\n : 1,\n newSelectionStart = index + offset;\n // if object is horizontally flipped, mirror cursor location from the end\n if (this.flipX) {\n newSelectionStart = jlen - newSelectionStart;\n }\n\n if (newSelectionStart > this._text.length) {\n newSelectionStart = this._text.length;\n }\n\n return newSelectionStart;\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { config } from '../config';\n\n(function (global) {\n var fabric = global.fabric;\n fabric.util.object.extend(\n fabric.IText.prototype,\n /** @lends fabric.IText.prototype */ {\n /**\n * Initializes hidden textarea (needed to bring up keyboard in iOS)\n */\n initHiddenTextarea: function () {\n this.hiddenTextarea = fabric.document.createElement('textarea');\n this.hiddenTextarea.setAttribute('autocapitalize', 'off');\n this.hiddenTextarea.setAttribute('autocorrect', 'off');\n this.hiddenTextarea.setAttribute('autocomplete', 'off');\n this.hiddenTextarea.setAttribute('spellcheck', 'false');\n this.hiddenTextarea.setAttribute('data-fabric', 'textarea');\n this.hiddenTextarea.setAttribute('wrap', 'off');\n var style = this._calcTextareaPosition();\n // line-height: 1px; was removed from the style to fix this:\n // https://bugs.chromium.org/p/chromium/issues/detail?id=870966\n this.hiddenTextarea.style.cssText =\n 'position: absolute; top: ' +\n style.top +\n '; left: ' +\n style.left +\n '; z-index: -999; opacity: 0; width: 1px; height: 1px; font-size: 1px;' +\n ' padding-top: ' +\n style.fontSize +\n ';';\n\n if (this.hiddenTextareaContainer) {\n this.hiddenTextareaContainer.appendChild(this.hiddenTextarea);\n } else {\n fabric.document.body.appendChild(this.hiddenTextarea);\n }\n\n fabric.util.addListener(\n this.hiddenTextarea,\n 'blur',\n this.blur.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'keydown',\n this.onKeyDown.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'keyup',\n this.onKeyUp.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'input',\n this.onInput.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'copy',\n this.copy.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'cut',\n this.copy.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'paste',\n this.paste.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'compositionstart',\n this.onCompositionStart.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'compositionupdate',\n this.onCompositionUpdate.bind(this)\n );\n fabric.util.addListener(\n this.hiddenTextarea,\n 'compositionend',\n this.onCompositionEnd.bind(this)\n );\n\n if (!this._clickHandlerInitialized && this.canvas) {\n fabric.util.addListener(\n this.canvas.upperCanvasEl,\n 'click',\n this.onClick.bind(this)\n );\n this._clickHandlerInitialized = true;\n }\n },\n\n /**\n * For functionalities on keyDown\n * Map a special key to a function of the instance/prototype\n * If you need different behaviour for ESC or TAB or arrows, you have to change\n * this map setting the name of a function that you build on the fabric.Itext or\n * your prototype.\n * the map change will affect all Instances unless you need for only some text Instances\n * in that case you have to clone this object and assign your Instance.\n * this.keysMap = Object.assign({}, this.keysMap);\n * The function must be in fabric.Itext.prototype.myFunction And will receive event as args[0]\n */\n keysMap: {\n 9: 'exitEditing',\n 27: 'exitEditing',\n 33: 'moveCursorUp',\n 34: 'moveCursorDown',\n 35: 'moveCursorRight',\n 36: 'moveCursorLeft',\n 37: 'moveCursorLeft',\n 38: 'moveCursorUp',\n 39: 'moveCursorRight',\n 40: 'moveCursorDown',\n },\n\n keysMapRtl: {\n 9: 'exitEditing',\n 27: 'exitEditing',\n 33: 'moveCursorUp',\n 34: 'moveCursorDown',\n 35: 'moveCursorLeft',\n 36: 'moveCursorRight',\n 37: 'moveCursorRight',\n 38: 'moveCursorUp',\n 39: 'moveCursorLeft',\n 40: 'moveCursorDown',\n },\n\n /**\n * For functionalities on keyUp + ctrl || cmd\n */\n ctrlKeysMapUp: {\n 67: 'copy',\n 88: 'cut',\n },\n\n /**\n * For functionalities on keyDown + ctrl || cmd\n */\n ctrlKeysMapDown: {\n 65: 'selectAll',\n },\n\n onClick: function () {\n // No need to trigger click event here, focus is enough to have the keyboard appear on Android\n this.hiddenTextarea && this.hiddenTextarea.focus();\n },\n\n /**\n * Override this method to customize cursor behavior on textbox blur\n */\n blur: function () {\n this.abortCursorAnimation();\n },\n\n /**\n * Handles keydown event\n * only used for arrows and combination of modifier keys.\n * @param {Event} e Event object\n */\n onKeyDown: function (e) {\n if (!this.isEditing) {\n return;\n }\n var keyMap = this.direction === 'rtl' ? this.keysMapRtl : this.keysMap;\n if (e.keyCode in keyMap) {\n this[keyMap[e.keyCode]](e);\n } else if (\n e.keyCode in this.ctrlKeysMapDown &&\n (e.ctrlKey || e.metaKey)\n ) {\n this[this.ctrlKeysMapDown[e.keyCode]](e);\n } else {\n return;\n }\n e.stopImmediatePropagation();\n e.preventDefault();\n if (e.keyCode >= 33 && e.keyCode <= 40) {\n // if i press an arrow key just update selection\n this.inCompositionMode = false;\n this.clearContextTop();\n this.renderCursorOrSelection();\n } else {\n this.canvas && this.canvas.requestRenderAll();\n }\n },\n\n /**\n * Handles keyup event\n * We handle KeyUp because ie11 and edge have difficulties copy/pasting\n * if a copy/cut event fired, keyup is dismissed\n * @param {Event} e Event object\n */\n onKeyUp: function (e) {\n if (!this.isEditing || this._copyDone || this.inCompositionMode) {\n this._copyDone = false;\n return;\n }\n if (e.keyCode in this.ctrlKeysMapUp && (e.ctrlKey || e.metaKey)) {\n this[this.ctrlKeysMapUp[e.keyCode]](e);\n } else {\n return;\n }\n e.stopImmediatePropagation();\n e.preventDefault();\n this.canvas && this.canvas.requestRenderAll();\n },\n\n /**\n * Handles onInput event\n * @param {Event} e Event object\n */\n onInput: function (e) {\n var fromPaste = this.fromPaste;\n this.fromPaste = false;\n e && e.stopPropagation();\n if (!this.isEditing) {\n return;\n }\n // decisions about style changes.\n var nextText = this._splitTextIntoLines(\n this.hiddenTextarea.value\n ).graphemeText,\n charCount = this._text.length,\n nextCharCount = nextText.length,\n removedText,\n insertedText,\n charDiff = nextCharCount - charCount,\n selectionStart = this.selectionStart,\n selectionEnd = this.selectionEnd,\n selection = selectionStart !== selectionEnd,\n copiedStyle,\n removeFrom,\n removeTo;\n if (this.hiddenTextarea.value === '') {\n this.styles = {};\n this.updateFromTextArea();\n this.fire('changed');\n if (this.canvas) {\n this.canvas.fire('text:changed', { target: this });\n this.canvas.requestRenderAll();\n }\n return;\n }\n\n var textareaSelection = this.fromStringToGraphemeSelection(\n this.hiddenTextarea.selectionStart,\n this.hiddenTextarea.selectionEnd,\n this.hiddenTextarea.value\n );\n var backDelete = selectionStart > textareaSelection.selectionStart;\n\n if (selection) {\n removedText = this._text.slice(selectionStart, selectionEnd);\n charDiff += selectionEnd - selectionStart;\n } else if (nextCharCount < charCount) {\n if (backDelete) {\n removedText = this._text.slice(\n selectionEnd + charDiff,\n selectionEnd\n );\n } else {\n removedText = this._text.slice(\n selectionStart,\n selectionStart - charDiff\n );\n }\n }\n insertedText = nextText.slice(\n textareaSelection.selectionEnd - charDiff,\n textareaSelection.selectionEnd\n );\n if (removedText && removedText.length) {\n if (insertedText.length) {\n // let's copy some style before deleting.\n // we want to copy the style before the cursor OR the style at the cursor if selection\n // is bigger than 0.\n copiedStyle = this.getSelectionStyles(\n selectionStart,\n selectionStart + 1,\n false\n );\n // now duplicate the style one for each inserted text.\n copiedStyle = insertedText.map(function () {\n // this return an array of references, but that is fine since we are\n // copying the style later.\n return copiedStyle[0];\n });\n }\n if (selection) {\n removeFrom = selectionStart;\n removeTo = selectionEnd;\n } else if (backDelete) {\n // detect differences between forwardDelete and backDelete\n removeFrom = selectionEnd - removedText.length;\n removeTo = selectionEnd;\n } else {\n removeFrom = selectionEnd;\n removeTo = selectionEnd + removedText.length;\n }\n this.removeStyleFromTo(removeFrom, removeTo);\n }\n if (insertedText.length) {\n if (\n fromPaste &&\n insertedText.join('') === fabric.copiedText &&\n !config.disableStyleCopyPaste\n ) {\n copiedStyle = fabric.copiedTextStyle;\n }\n this.insertNewStyleBlock(insertedText, selectionStart, copiedStyle);\n }\n this.updateFromTextArea();\n this.fire('changed');\n if (this.canvas) {\n this.canvas.fire('text:changed', { target: this });\n this.canvas.requestRenderAll();\n }\n },\n /**\n * Composition start\n */\n onCompositionStart: function () {\n this.inCompositionMode = true;\n },\n\n /**\n * Composition end\n */\n onCompositionEnd: function () {\n this.inCompositionMode = false;\n },\n\n // /**\n // * Composition update\n // */\n onCompositionUpdate: function (e) {\n this.compositionStart = e.target.selectionStart;\n this.compositionEnd = e.target.selectionEnd;\n this.updateTextareaPosition();\n },\n\n /**\n * Copies selected text\n * @param {Event} e Event object\n */\n copy: function () {\n if (this.selectionStart === this.selectionEnd) {\n //do not cut-copy if no selection\n return;\n }\n\n fabric.copiedText = this.getSelectedText();\n if (!config.disableStyleCopyPaste) {\n fabric.copiedTextStyle = this.getSelectionStyles(\n this.selectionStart,\n this.selectionEnd,\n true\n );\n } else {\n fabric.copiedTextStyle = null;\n }\n this._copyDone = true;\n },\n\n /**\n * Pastes text\n * @param {Event} e Event object\n */\n paste: function () {\n this.fromPaste = true;\n },\n\n /**\n * @private\n * @param {Event} e Event object\n * @return {Object} Clipboard data object\n */\n _getClipboardData: function (e) {\n return (e && e.clipboardData) || fabric.window.clipboardData;\n },\n\n /**\n * Finds the width in pixels before the cursor on the same line\n * @private\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @return {Number} widthBeforeCursor width before cursor\n */\n _getWidthBeforeCursor: function (lineIndex, charIndex) {\n var widthBeforeCursor = this._getLineLeftOffset(lineIndex),\n bound;\n\n if (charIndex > 0) {\n bound = this.__charBounds[lineIndex][charIndex - 1];\n widthBeforeCursor += bound.left + bound.width;\n }\n return widthBeforeCursor;\n },\n\n /**\n * Gets start offset of a selection\n * @param {Event} e Event object\n * @param {Boolean} isRight\n * @return {Number}\n */\n getDownCursorOffset: function (e, isRight) {\n var selectionProp = this._getSelectionForOffset(e, isRight),\n cursorLocation = this.get2DCursorLocation(selectionProp),\n lineIndex = cursorLocation.lineIndex;\n // if on last line, down cursor goes to end of line\n if (\n lineIndex === this._textLines.length - 1 ||\n e.metaKey ||\n e.keyCode === 34\n ) {\n // move to the end of a text\n return this._text.length - selectionProp;\n }\n var charIndex = cursorLocation.charIndex,\n widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex),\n indexOnOtherLine = this._getIndexOnLine(\n lineIndex + 1,\n widthBeforeCursor\n ),\n textAfterCursor = this._textLines[lineIndex].slice(charIndex);\n return (\n textAfterCursor.length +\n indexOnOtherLine +\n 1 +\n this.missingNewlineOffset(lineIndex)\n );\n },\n\n /**\n * private\n * Helps finding if the offset should be counted from Start or End\n * @param {Event} e Event object\n * @param {Boolean} isRight\n * @return {Number}\n */\n _getSelectionForOffset: function (e, isRight) {\n if (\n e.shiftKey &&\n this.selectionStart !== this.selectionEnd &&\n isRight\n ) {\n return this.selectionEnd;\n } else {\n return this.selectionStart;\n }\n },\n\n /**\n * @param {Event} e Event object\n * @param {Boolean} isRight\n * @return {Number}\n */\n getUpCursorOffset: function (e, isRight) {\n var selectionProp = this._getSelectionForOffset(e, isRight),\n cursorLocation = this.get2DCursorLocation(selectionProp),\n lineIndex = cursorLocation.lineIndex;\n if (lineIndex === 0 || e.metaKey || e.keyCode === 33) {\n // if on first line, up cursor goes to start of line\n return -selectionProp;\n }\n var charIndex = cursorLocation.charIndex,\n widthBeforeCursor = this._getWidthBeforeCursor(lineIndex, charIndex),\n indexOnOtherLine = this._getIndexOnLine(\n lineIndex - 1,\n widthBeforeCursor\n ),\n textBeforeCursor = this._textLines[lineIndex].slice(0, charIndex),\n missingNewlineOffset = this.missingNewlineOffset(lineIndex - 1);\n // return a negative offset\n return (\n -this._textLines[lineIndex - 1].length +\n indexOnOtherLine -\n textBeforeCursor.length +\n (1 - missingNewlineOffset)\n );\n },\n\n /**\n * for a given width it founds the matching character.\n * @private\n */\n _getIndexOnLine: function (lineIndex, width) {\n var line = this._textLines[lineIndex],\n lineLeftOffset = this._getLineLeftOffset(lineIndex),\n widthOfCharsOnLine = lineLeftOffset,\n indexOnLine = 0,\n charWidth,\n foundMatch;\n\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n charWidth = this.__charBounds[lineIndex][j].width;\n widthOfCharsOnLine += charWidth;\n if (widthOfCharsOnLine > width) {\n foundMatch = true;\n var leftEdge = widthOfCharsOnLine - charWidth,\n rightEdge = widthOfCharsOnLine,\n offsetFromLeftEdge = Math.abs(leftEdge - width),\n offsetFromRightEdge = Math.abs(rightEdge - width);\n\n indexOnLine = offsetFromRightEdge < offsetFromLeftEdge ? j : j - 1;\n break;\n }\n }\n\n // reached end\n if (!foundMatch) {\n indexOnLine = line.length - 1;\n }\n\n return indexOnLine;\n },\n\n /**\n * Moves cursor down\n * @param {Event} e Event object\n */\n moveCursorDown: function (e) {\n if (\n this.selectionStart >= this._text.length &&\n this.selectionEnd >= this._text.length\n ) {\n return;\n }\n this._moveCursorUpOrDown('Down', e);\n },\n\n /**\n * Moves cursor up\n * @param {Event} e Event object\n */\n moveCursorUp: function (e) {\n if (this.selectionStart === 0 && this.selectionEnd === 0) {\n return;\n }\n this._moveCursorUpOrDown('Up', e);\n },\n\n /**\n * Moves cursor up or down, fires the events\n * @param {String} direction 'Up' or 'Down'\n * @param {Event} e Event object\n */\n _moveCursorUpOrDown: function (direction, e) {\n // getUpCursorOffset\n // getDownCursorOffset\n var action = 'get' + direction + 'CursorOffset',\n offset = this[action](e, this._selectionDirection === 'right');\n if (e.shiftKey) {\n this.moveCursorWithShift(offset);\n } else {\n this.moveCursorWithoutShift(offset);\n }\n if (offset !== 0) {\n this.setSelectionInBoundaries();\n this.abortCursorAnimation();\n this._currentCursorOpacity = 1;\n this.initDelayedCursor();\n this._fireSelectionChanged();\n this._updateTextarea();\n }\n },\n\n /**\n * Moves cursor with shift\n * @param {Number} offset\n */\n moveCursorWithShift: function (offset) {\n var newSelection =\n this._selectionDirection === 'left'\n ? this.selectionStart + offset\n : this.selectionEnd + offset;\n this.setSelectionStartEndWithShift(\n this.selectionStart,\n this.selectionEnd,\n newSelection\n );\n return offset !== 0;\n },\n\n /**\n * Moves cursor up without shift\n * @param {Number} offset\n */\n moveCursorWithoutShift: function (offset) {\n if (offset < 0) {\n this.selectionStart += offset;\n this.selectionEnd = this.selectionStart;\n } else {\n this.selectionEnd += offset;\n this.selectionStart = this.selectionEnd;\n }\n return offset !== 0;\n },\n\n /**\n * Moves cursor left\n * @param {Event} e Event object\n */\n moveCursorLeft: function (e) {\n if (this.selectionStart === 0 && this.selectionEnd === 0) {\n return;\n }\n this._moveCursorLeftOrRight('Left', e);\n },\n\n /**\n * @private\n * @return {Boolean} true if a change happened\n */\n _move: function (e, prop, direction) {\n var newValue;\n if (e.altKey) {\n newValue = this['findWordBoundary' + direction](this[prop]);\n } else if (e.metaKey || e.keyCode === 35 || e.keyCode === 36) {\n newValue = this['findLineBoundary' + direction](this[prop]);\n } else {\n this[prop] += direction === 'Left' ? -1 : 1;\n return true;\n }\n if (typeof newValue !== 'undefined' && this[prop] !== newValue) {\n this[prop] = newValue;\n return true;\n }\n },\n\n /**\n * @private\n */\n _moveLeft: function (e, prop) {\n return this._move(e, prop, 'Left');\n },\n\n /**\n * @private\n */\n _moveRight: function (e, prop) {\n return this._move(e, prop, 'Right');\n },\n\n /**\n * Moves cursor left without keeping selection\n * @param {Event} e\n */\n moveCursorLeftWithoutShift: function (e) {\n var change = true;\n this._selectionDirection = 'left';\n\n // only move cursor when there is no selection,\n // otherwise we discard it, and leave cursor on same place\n if (\n this.selectionEnd === this.selectionStart &&\n this.selectionStart !== 0\n ) {\n change = this._moveLeft(e, 'selectionStart');\n }\n this.selectionEnd = this.selectionStart;\n return change;\n },\n\n /**\n * Moves cursor left while keeping selection\n * @param {Event} e\n */\n moveCursorLeftWithShift: function (e) {\n if (\n this._selectionDirection === 'right' &&\n this.selectionStart !== this.selectionEnd\n ) {\n return this._moveLeft(e, 'selectionEnd');\n } else if (this.selectionStart !== 0) {\n this._selectionDirection = 'left';\n return this._moveLeft(e, 'selectionStart');\n }\n },\n\n /**\n * Moves cursor right\n * @param {Event} e Event object\n */\n moveCursorRight: function (e) {\n if (\n this.selectionStart >= this._text.length &&\n this.selectionEnd >= this._text.length\n ) {\n return;\n }\n this._moveCursorLeftOrRight('Right', e);\n },\n\n /**\n * Moves cursor right or Left, fires event\n * @param {String} direction 'Left', 'Right'\n * @param {Event} e Event object\n */\n _moveCursorLeftOrRight: function (direction, e) {\n var actionName = 'moveCursor' + direction + 'With';\n this._currentCursorOpacity = 1;\n\n if (e.shiftKey) {\n actionName += 'Shift';\n } else {\n actionName += 'outShift';\n }\n if (this[actionName](e)) {\n this.abortCursorAnimation();\n this.initDelayedCursor();\n this._fireSelectionChanged();\n this._updateTextarea();\n }\n },\n\n /**\n * Moves cursor right while keeping selection\n * @param {Event} e\n */\n moveCursorRightWithShift: function (e) {\n if (\n this._selectionDirection === 'left' &&\n this.selectionStart !== this.selectionEnd\n ) {\n return this._moveRight(e, 'selectionStart');\n } else if (this.selectionEnd !== this._text.length) {\n this._selectionDirection = 'right';\n return this._moveRight(e, 'selectionEnd');\n }\n },\n\n /**\n * Moves cursor right without keeping selection\n * @param {Event} e Event object\n */\n moveCursorRightWithoutShift: function (e) {\n var changed = true;\n this._selectionDirection = 'right';\n\n if (this.selectionStart === this.selectionEnd) {\n changed = this._moveRight(e, 'selectionStart');\n this.selectionEnd = this.selectionStart;\n } else {\n this.selectionStart = this.selectionEnd;\n }\n return changed;\n },\n\n /**\n * Removes characters from start/end\n * start/end ar per grapheme position in _text array.\n *\n * @param {Number} start\n * @param {Number} end default to start + 1\n */\n removeChars: function (start, end) {\n if (typeof end === 'undefined') {\n end = start + 1;\n }\n this.removeStyleFromTo(start, end);\n this._text.splice(start, end - start);\n this.text = this._text.join('');\n this.set('dirty', true);\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n this.setCoords();\n }\n this._removeExtraneousStyles();\n },\n\n /**\n * insert characters at start position, before start position.\n * start equal 1 it means the text get inserted between actual grapheme 0 and 1\n * if style array is provided, it must be as the same length of text in graphemes\n * if end is provided and is bigger than start, old text is replaced.\n * start/end ar per grapheme position in _text array.\n *\n * @param {String} text text to insert\n * @param {Array} style array of style objects\n * @param {Number} start\n * @param {Number} end default to start + 1\n */\n insertChars: function (text, style, start, end) {\n if (typeof end === 'undefined') {\n end = start;\n }\n if (end > start) {\n this.removeStyleFromTo(start, end);\n }\n var graphemes = this.graphemeSplit(text);\n this.insertNewStyleBlock(graphemes, start, style);\n this._text = [].concat(\n this._text.slice(0, start),\n graphemes,\n this._text.slice(end)\n );\n this.text = this._text.join('');\n this.set('dirty', true);\n if (this._shouldClearDimensionCache()) {\n this.initDimensions();\n this.setCoords();\n }\n this._removeExtraneousStyles();\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Color } from '../color';\nimport { config } from '../config';\n\n/* _TO_SVG_START_ */\n(function (global) {\n var fabric = global.fabric,\n toFixed = fabric.util.toFixed,\n multipleSpacesRegex = / +/g;\n\n fabric.util.object.extend(\n fabric.Text.prototype,\n /** @lends fabric.Text.prototype */ {\n /**\n * Returns SVG representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n _toSVG: function () {\n var offsets = this._getSVGLeftTopOffsets(),\n textAndBg = this._getSVGTextAndBg(offsets.textTop, offsets.textLeft);\n return this._wrapSVGTextAndBg(textAndBg);\n },\n\n /**\n * Returns svg representation of an instance\n * @param {Function} [reviver] Method for further parsing of svg representation.\n * @return {String} svg representation of an instance\n */\n toSVG: function (reviver) {\n return this._createBaseSVGMarkup(this._toSVG(), {\n reviver: reviver,\n noStyle: true,\n withShadow: true,\n });\n },\n\n /**\n * @private\n */\n _getSVGLeftTopOffsets: function () {\n return {\n textLeft: -this.width / 2,\n textTop: -this.height / 2,\n lineTop: this.getHeightOfLine(0),\n };\n },\n\n /**\n * @private\n */\n _wrapSVGTextAndBg: function (textAndBg) {\n var noShadow = true,\n textDecoration = this.getSvgTextDecoration(this);\n return [\n textAndBg.textBgRects.join(''),\n '\\t\\t',\n textAndBg.textSpans.join(''),\n '\\n',\n ];\n },\n\n /**\n * @private\n * @param {Number} textTopOffset Text top offset\n * @param {Number} textLeftOffset Text left offset\n * @return {Object}\n */\n _getSVGTextAndBg: function (textTopOffset, textLeftOffset) {\n var textSpans = [],\n textBgRects = [],\n height = textTopOffset,\n lineOffset;\n // bounding-box background\n this._setSVGBg(textBgRects);\n\n // text and text-background\n for (var i = 0, len = this._textLines.length; i < len; i++) {\n lineOffset = this._getLineLeftOffset(i);\n if (this.direction === 'rtl') {\n lineOffset += this.width;\n }\n if (\n this.textBackgroundColor ||\n this.styleHas('textBackgroundColor', i)\n ) {\n this._setSVGTextLineBg(\n textBgRects,\n i,\n textLeftOffset + lineOffset,\n height\n );\n }\n this._setSVGTextLineText(\n textSpans,\n i,\n textLeftOffset + lineOffset,\n height\n );\n height += this.getHeightOfLine(i);\n }\n\n return {\n textSpans: textSpans,\n textBgRects: textBgRects,\n };\n },\n\n /**\n * @private\n */\n _createTextCharSpan: function (_char, styleDecl, left, top) {\n var shouldUseWhitespace =\n _char !== _char.trim() || _char.match(multipleSpacesRegex),\n styleProps = this.getSvgSpanStyles(styleDecl, shouldUseWhitespace),\n fillStyles = styleProps ? 'style=\"' + styleProps + '\"' : '',\n dy = styleDecl.deltaY,\n dySpan = '',\n NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n if (dy) {\n dySpan = ' dy=\"' + toFixed(dy, NUM_FRACTION_DIGITS) + '\" ';\n }\n return [\n '',\n fabric.util.string.escapeXml(_char),\n '',\n ].join('');\n },\n\n _setSVGTextLineText: function (\n textSpans,\n lineIndex,\n textLeftOffset,\n textTopOffset\n ) {\n // set proper line offset\n var lineHeight = this.getHeightOfLine(lineIndex),\n isJustify = this.textAlign.indexOf('justify') !== -1,\n actualStyle,\n nextStyle,\n charsToRender = '',\n charBox,\n style,\n boxWidth = 0,\n line = this._textLines[lineIndex],\n timeToRender;\n\n textTopOffset +=\n (lineHeight * (1 - this._fontSizeFraction)) / this.lineHeight;\n for (var i = 0, len = line.length - 1; i <= len; i++) {\n timeToRender = i === len || this.charSpacing;\n charsToRender += line[i];\n charBox = this.__charBounds[lineIndex][i];\n if (boxWidth === 0) {\n textLeftOffset += charBox.kernedWidth - charBox.width;\n boxWidth += charBox.width;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n if (isJustify && !timeToRender) {\n if (this._reSpaceAndTab.test(line[i])) {\n timeToRender = true;\n }\n }\n if (!timeToRender) {\n // if we have charSpacing, we render char by char\n actualStyle =\n actualStyle || this.getCompleteStyleDeclaration(lineIndex, i);\n nextStyle = this.getCompleteStyleDeclaration(lineIndex, i + 1);\n timeToRender = fabric.util.hasStyleChanged(\n actualStyle,\n nextStyle,\n true\n );\n }\n if (timeToRender) {\n style = this._getStyleDeclaration(lineIndex, i) || {};\n textSpans.push(\n this._createTextCharSpan(\n charsToRender,\n style,\n textLeftOffset,\n textTopOffset\n )\n );\n charsToRender = '';\n actualStyle = nextStyle;\n if (this.direction === 'rtl') {\n textLeftOffset -= boxWidth;\n } else {\n textLeftOffset += boxWidth;\n }\n boxWidth = 0;\n }\n }\n },\n\n _pushTextBgRect: function (textBgRects, color, left, top, width, height) {\n var NUM_FRACTION_DIGITS = config.NUM_FRACTION_DIGITS;\n textBgRects.push(\n '\\t\\t\\n'\n );\n },\n\n _setSVGTextLineBg: function (textBgRects, i, leftOffset, textTopOffset) {\n var line = this._textLines[i],\n heightOfLine = this.getHeightOfLine(i) / this.lineHeight,\n boxWidth = 0,\n boxStart = 0,\n charBox,\n currentColor,\n lastColor = this.getValueOfPropertyAt(i, 0, 'textBackgroundColor');\n for (var j = 0, jlen = line.length; j < jlen; j++) {\n charBox = this.__charBounds[i][j];\n currentColor = this.getValueOfPropertyAt(i, j, 'textBackgroundColor');\n if (currentColor !== lastColor) {\n lastColor &&\n this._pushTextBgRect(\n textBgRects,\n lastColor,\n leftOffset + boxStart,\n textTopOffset,\n boxWidth,\n heightOfLine\n );\n boxStart = charBox.left;\n boxWidth = charBox.width;\n lastColor = currentColor;\n } else {\n boxWidth += charBox.kernedWidth;\n }\n }\n currentColor &&\n this._pushTextBgRect(\n textBgRects,\n currentColor,\n leftOffset + boxStart,\n textTopOffset,\n boxWidth,\n heightOfLine\n );\n },\n\n /**\n * Adobe Illustrator (at least CS5) is unable to render rgba()-based fill values\n * we work around it by \"moving\" alpha channel into opacity attribute and setting fill's alpha to 1\n *\n * @private\n * @param {*} value\n * @return {String}\n */\n _getFillAttributes: function (value) {\n var fillColor =\n value && typeof value === 'string' ? new Color(value) : '';\n if (\n !fillColor ||\n !fillColor.getSource() ||\n fillColor.getAlpha() === 1\n ) {\n return 'fill=\"' + value + '\"';\n }\n return (\n 'opacity=\"' +\n fillColor.getAlpha() +\n '\" fill=\"' +\n fillColor.setAlpha(1).toRgb() +\n '\"'\n );\n },\n\n /**\n * @private\n */\n _getSVGLineTopOffset: function (lineIndex) {\n var lineTopOffset = 0,\n lastHeight = 0;\n for (var j = 0; j < lineIndex; j++) {\n lineTopOffset += this.getHeightOfLine(j);\n }\n lastHeight = this.getHeightOfLine(j);\n return {\n lineTop: lineTopOffset,\n offset:\n ((this._fontSizeMult - this._fontSizeFraction) * lastHeight) /\n (this.lineHeight * this._fontSizeMult),\n };\n },\n\n /**\n * Returns styles-string for svg-export\n * @param {Boolean} skipShadow a boolean to skip shadow filter output\n * @return {String}\n */\n getSvgStyles: function (skipShadow) {\n var svgStyle = fabric.Object.prototype.getSvgStyles.call(\n this,\n skipShadow\n );\n return svgStyle + ' white-space: pre;';\n },\n }\n );\n})(typeof exports !== 'undefined' ? exports : window);\n/* _TO_SVG_END_ */\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n\n /**\n * Textbox class, based on IText, allows the user to resize the text rectangle\n * and wraps lines automatically. Textboxes have their Y scaling locked, the\n * user can only change width. Height is adjusted automatically based on the\n * wrapping of lines.\n * @class fabric.Textbox\n * @extends fabric.IText\n * @mixes fabric.Observable\n * @return {fabric.Textbox} thisArg\n * @see {@link fabric.Textbox#initialize} for constructor definition\n */\n fabric.Textbox = fabric.util.createClass(fabric.IText, fabric.Observable, {\n /**\n * Type of an object\n * @type String\n * @default\n */\n type: 'textbox',\n\n /**\n * Minimum width of textbox, in pixels.\n * @type Number\n * @default\n */\n minWidth: 20,\n\n /**\n * Minimum calculated width of a textbox, in pixels.\n * fixed to 2 so that an empty textbox cannot go to 0\n * and is still selectable without text.\n * @type Number\n * @default\n */\n dynamicMinWidth: 2,\n\n /**\n * Cached array of text wrapping.\n * @type Array\n */\n __cachedLines: null,\n\n /**\n * Override standard Object class values\n */\n lockScalingFlip: true,\n\n /**\n * Override standard Object class values\n * Textbox needs this on false\n */\n noScaleCache: false,\n\n /**\n * Properties which when set cause object to change dimensions\n * @type Object\n * @private\n */\n _dimensionAffectingProps:\n fabric.Text.prototype._dimensionAffectingProps.concat('width'),\n\n /**\n * Use this regular expression to split strings in breakable lines\n * @private\n */\n _wordJoiners: /[ \\t\\r]/,\n\n /**\n * Use this boolean property in order to split strings that have no white space concept.\n * this is a cheap way to help with chinese/japanese\n * @type Boolean\n * @since 2.6.0\n */\n splitByGrapheme: false,\n\n /**\n * Unlike superclass's version of this function, Textbox does not update\n * its width.\n * @private\n * @override\n */\n initDimensions: function () {\n if (this.__skipDimension) {\n return;\n }\n this.isEditing && this.initDelayedCursor();\n this.clearContextTop();\n this._clearCache();\n // clear dynamicMinWidth as it will be different after we re-wrap line\n this.dynamicMinWidth = 0;\n // wrap lines\n this._styleMap = this._generateStyleMap(this._splitText());\n // if after wrapping, the width is smaller than dynamicMinWidth, change the width and re-wrap\n if (this.dynamicMinWidth > this.width) {\n this._set('width', this.dynamicMinWidth);\n }\n if (this.textAlign.indexOf('justify') !== -1) {\n // once text is measured we need to make space fatter to make justified text.\n this.enlargeSpaces();\n }\n // clear cache and re-calculate height\n this.height = this.calcTextHeight();\n this.saveState({ propertySet: '_dimensionAffectingProps' });\n },\n\n /**\n * Generate an object that translates the style object so that it is\n * broken up by visual lines (new lines and automatic wrapping).\n * The original text styles object is broken up by actual lines (new lines only),\n * which is only sufficient for Text / IText\n * @private\n */\n _generateStyleMap: function (textInfo) {\n var realLineCount = 0,\n realLineCharCount = 0,\n charCount = 0,\n map = {};\n\n for (var i = 0; i < textInfo.graphemeLines.length; i++) {\n if (textInfo.graphemeText[charCount] === '\\n' && i > 0) {\n realLineCharCount = 0;\n charCount++;\n realLineCount++;\n } else if (\n !this.splitByGrapheme &&\n this._reSpaceAndTab.test(textInfo.graphemeText[charCount]) &&\n i > 0\n ) {\n // this case deals with space's that are removed from end of lines when wrapping\n realLineCharCount++;\n charCount++;\n }\n\n map[i] = { line: realLineCount, offset: realLineCharCount };\n\n charCount += textInfo.graphemeLines[i].length;\n realLineCharCount += textInfo.graphemeLines[i].length;\n }\n\n return map;\n },\n\n /**\n * Returns true if object has a style property or has it on a specified line\n * @param {Number} lineIndex\n * @return {Boolean}\n */\n styleHas: function (property, lineIndex) {\n if (this._styleMap && !this.isWrapping) {\n var map = this._styleMap[lineIndex];\n if (map) {\n lineIndex = map.line;\n }\n }\n return fabric.Text.prototype.styleHas.call(this, property, lineIndex);\n },\n\n /**\n * Returns true if object has no styling or no styling in a line\n * @param {Number} lineIndex , lineIndex is on wrapped lines.\n * @return {Boolean}\n */\n isEmptyStyles: function (lineIndex) {\n if (!this.styles) {\n return true;\n }\n var offset = 0,\n nextLineIndex = lineIndex + 1,\n nextOffset,\n obj,\n shouldLimit = false,\n map = this._styleMap[lineIndex],\n mapNextLine = this._styleMap[lineIndex + 1];\n if (map) {\n lineIndex = map.line;\n offset = map.offset;\n }\n if (mapNextLine) {\n nextLineIndex = mapNextLine.line;\n shouldLimit = nextLineIndex === lineIndex;\n nextOffset = mapNextLine.offset;\n }\n obj =\n typeof lineIndex === 'undefined'\n ? this.styles\n : { line: this.styles[lineIndex] };\n for (var p1 in obj) {\n for (var p2 in obj[p1]) {\n if (p2 >= offset && (!shouldLimit || p2 < nextOffset)) {\n // eslint-disable-next-line no-unused-vars\n for (var p3 in obj[p1][p2]) {\n return false;\n }\n }\n }\n }\n return true;\n },\n\n /**\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @private\n */\n _getStyleDeclaration: function (lineIndex, charIndex) {\n if (this._styleMap && !this.isWrapping) {\n var map = this._styleMap[lineIndex];\n if (!map) {\n return null;\n }\n lineIndex = map.line;\n charIndex = map.offset + charIndex;\n }\n return this.callSuper('_getStyleDeclaration', lineIndex, charIndex);\n },\n\n /**\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @param {Object} style\n * @private\n */\n _setStyleDeclaration: function (lineIndex, charIndex, style) {\n var map = this._styleMap[lineIndex];\n lineIndex = map.line;\n charIndex = map.offset + charIndex;\n\n this.styles[lineIndex][charIndex] = style;\n },\n\n /**\n * @param {Number} lineIndex\n * @param {Number} charIndex\n * @private\n */\n _deleteStyleDeclaration: function (lineIndex, charIndex) {\n var map = this._styleMap[lineIndex];\n lineIndex = map.line;\n charIndex = map.offset + charIndex;\n delete this.styles[lineIndex][charIndex];\n },\n\n /**\n * probably broken need a fix\n * Returns the real style line that correspond to the wrapped lineIndex line\n * Used just to verify if the line does exist or not.\n * @param {Number} lineIndex\n * @returns {Boolean} if the line exists or not\n * @private\n */\n _getLineStyle: function (lineIndex) {\n var map = this._styleMap[lineIndex];\n return !!this.styles[map.line];\n },\n\n /**\n * Set the line style to an empty object so that is initialized\n * @param {Number} lineIndex\n * @param {Object} style\n * @private\n */\n _setLineStyle: function (lineIndex) {\n var map = this._styleMap[lineIndex];\n this.styles[map.line] = {};\n },\n\n /**\n * Wraps text using the 'width' property of Textbox. First this function\n * splits text on newlines, so we preserve newlines entered by the user.\n * Then it wraps each line using the width of the Textbox by calling\n * _wrapLine().\n * @param {Array} lines The string array of text that is split into lines\n * @param {Number} desiredWidth width you want to wrap to\n * @returns {Array} Array of lines\n */\n _wrapText: function (lines, desiredWidth) {\n var wrapped = [],\n i;\n this.isWrapping = true;\n for (i = 0; i < lines.length; i++) {\n wrapped.push.apply(wrapped, this._wrapLine(lines[i], i, desiredWidth));\n }\n this.isWrapping = false;\n return wrapped;\n },\n\n /**\n * Helper function to measure a string of text, given its lineIndex and charIndex offset\n * It gets called when charBounds are not available yet.\n * Override if necessary\n * Use with {@link fabric.Textbox#wordSplit}\n *\n * @param {CanvasRenderingContext2D} ctx\n * @param {String} text\n * @param {number} lineIndex\n * @param {number} charOffset\n * @returns {number}\n */\n _measureWord: function (word, lineIndex, charOffset) {\n var width = 0,\n prevGrapheme,\n skipLeft = true;\n charOffset = charOffset || 0;\n for (var i = 0, len = word.length; i < len; i++) {\n var box = this._getGraphemeBox(\n word[i],\n lineIndex,\n i + charOffset,\n prevGrapheme,\n skipLeft\n );\n width += box.kernedWidth;\n prevGrapheme = word[i];\n }\n return width;\n },\n\n /**\n * Override this method to customize word splitting\n * Use with {@link fabric.Textbox#_measureWord}\n * @param {string} value\n * @returns {string[]} array of words\n */\n wordSplit: function (value) {\n return value.split(this._wordJoiners);\n },\n\n /**\n * Wraps a line of text using the width of the Textbox and a context.\n * @param {Array} line The grapheme array that represent the line\n * @param {Number} lineIndex\n * @param {Number} desiredWidth width you want to wrap the line to\n * @param {Number} reservedSpace space to remove from wrapping for custom functionalities\n * @returns {Array} Array of line(s) into which the given text is wrapped\n * to.\n */\n _wrapLine: function (_line, lineIndex, desiredWidth, reservedSpace) {\n var lineWidth = 0,\n splitByGrapheme = this.splitByGrapheme,\n graphemeLines = [],\n line = [],\n // spaces in different languages?\n words = splitByGrapheme\n ? this.graphemeSplit(_line)\n : this.wordSplit(_line),\n word = '',\n offset = 0,\n infix = splitByGrapheme ? '' : ' ',\n wordWidth = 0,\n infixWidth = 0,\n largestWordWidth = 0,\n lineJustStarted = true,\n additionalSpace = this._getWidthOfCharSpacing(),\n reservedSpace = reservedSpace || 0;\n // fix a difference between split and graphemeSplit\n if (words.length === 0) {\n words.push([]);\n }\n desiredWidth -= reservedSpace;\n // measure words\n var data = words.map(\n function (word) {\n // if using splitByGrapheme words are already in graphemes.\n word = splitByGrapheme ? word : this.graphemeSplit(word);\n var width = this._measureWord(word, lineIndex, offset);\n largestWordWidth = Math.max(width, largestWordWidth);\n offset += word.length + 1;\n return { word: word, width: width };\n }.bind(this)\n );\n var maxWidth = Math.max(\n desiredWidth,\n largestWordWidth,\n this.dynamicMinWidth\n );\n // layout words\n offset = 0;\n for (var i = 0; i < words.length; i++) {\n word = data[i].word;\n wordWidth = data[i].width;\n offset += word.length;\n\n lineWidth += infixWidth + wordWidth - additionalSpace;\n if (lineWidth > maxWidth && !lineJustStarted) {\n graphemeLines.push(line);\n line = [];\n lineWidth = wordWidth;\n lineJustStarted = true;\n } else {\n lineWidth += additionalSpace;\n }\n\n if (!lineJustStarted && !splitByGrapheme) {\n line.push(infix);\n }\n line = line.concat(word);\n\n infixWidth = splitByGrapheme\n ? 0\n : this._measureWord([infix], lineIndex, offset);\n offset++;\n lineJustStarted = false;\n }\n\n i && graphemeLines.push(line);\n\n if (largestWordWidth + reservedSpace > this.dynamicMinWidth) {\n this.dynamicMinWidth =\n largestWordWidth - additionalSpace + reservedSpace;\n }\n return graphemeLines;\n },\n\n /**\n * Detect if the text line is ended with an hard break\n * text and itext do not have wrapping, return false\n * @param {Number} lineIndex text to split\n * @return {Boolean}\n */\n isEndOfWrapping: function (lineIndex) {\n if (!this._styleMap[lineIndex + 1]) {\n // is last line, return true;\n return true;\n }\n if (\n this._styleMap[lineIndex + 1].line !== this._styleMap[lineIndex].line\n ) {\n // this is last line before a line break, return true;\n return true;\n }\n return false;\n },\n\n /**\n * Detect if a line has a linebreak and so we need to account for it when moving\n * and counting style.\n * @return Number\n */\n missingNewlineOffset: function (lineIndex) {\n if (this.splitByGrapheme) {\n return this.isEndOfWrapping(lineIndex) ? 1 : 0;\n }\n return 1;\n },\n\n /**\n * Gets lines of text to render in the Textbox. This function calculates\n * text wrapping on the fly every time it is called.\n * @param {String} text text to split\n * @returns {Array} Array of lines in the Textbox.\n * @override\n */\n _splitTextIntoLines: function (text) {\n var newText = fabric.Text.prototype._splitTextIntoLines.call(this, text),\n graphemeLines = this._wrapText(newText.lines, this.width),\n lines = new Array(graphemeLines.length);\n for (var i = 0; i < graphemeLines.length; i++) {\n lines[i] = graphemeLines[i].join('');\n }\n newText.lines = lines;\n newText.graphemeLines = graphemeLines;\n return newText;\n },\n\n getMinWidth: function () {\n return Math.max(this.minWidth, this.dynamicMinWidth);\n },\n\n _removeExtraneousStyles: function () {\n var linesToKeep = {};\n for (var prop in this._styleMap) {\n if (this._textLines[prop]) {\n linesToKeep[this._styleMap[prop].line] = 1;\n }\n }\n for (var prop in this.styles) {\n if (!linesToKeep[prop]) {\n delete this.styles[prop];\n }\n }\n },\n\n /**\n * Returns object representation of an instance\n * @method toObject\n * @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output\n * @return {Object} object representation of an instance\n */\n toObject: function (propertiesToInclude) {\n return this.callSuper(\n 'toObject',\n ['minWidth', 'splitByGrapheme'].concat(propertiesToInclude)\n );\n },\n });\n\n /**\n * Returns fabric.Textbox instance from an object representation\n * @static\n * @memberOf fabric.Textbox\n * @param {Object} object Object to create an instance from\n * @returns {Promise}\n */\n fabric.Textbox.fromObject = function (object) {\n var styles = fabric.util.stylesFromArray(object.styles, object.text);\n //copy object to prevent mutation\n var objCopy = Object.assign({}, object, { styles: styles });\n return fabric.Object._fromObject(fabric.Textbox, objCopy, {\n extraParam: 'text',\n });\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { degreesToRadians } from '../util/misc/radiansDegreesConversion';\n\n/**\n * Render a round control, as per fabric features.\n * This function is written to respect object properties like transparentCorners, cornerSize\n * cornerColor, cornerStrokeColor\n * plus the addition of offsetY and offsetX.\n * @param {CanvasRenderingContext2D} ctx context to render on\n * @param {Number} left x coordinate where the control center should be\n * @param {Number} top y coordinate where the control center should be\n * @param {Object} styleOverride override for fabric.Object controls style\n * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls\n */\nexport function renderCircleControl(\n ctx,\n left,\n top,\n styleOverride,\n fabricObject\n) {\n styleOverride = styleOverride || {};\n var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize,\n ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize,\n transparentCorners =\n typeof styleOverride.transparentCorners !== 'undefined'\n ? styleOverride.transparentCorners\n : fabricObject.transparentCorners,\n methodName = transparentCorners ? 'stroke' : 'fill',\n stroke =\n !transparentCorners &&\n (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor),\n myLeft = left,\n myTop = top,\n size;\n ctx.save();\n ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor;\n ctx.strokeStyle =\n styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor;\n // as soon as fabric react v5, remove ie11, use proper ellipse code.\n if (xSize > ySize) {\n size = xSize;\n ctx.scale(1.0, ySize / xSize);\n myTop = (top * xSize) / ySize;\n } else if (ySize > xSize) {\n size = ySize;\n ctx.scale(xSize / ySize, 1.0);\n myLeft = (left * ySize) / xSize;\n } else {\n size = xSize;\n }\n // this is still wrong\n ctx.lineWidth = 1;\n ctx.beginPath();\n ctx.arc(myLeft, myTop, size / 2, 0, 2 * Math.PI, false);\n ctx[methodName]();\n if (stroke) {\n ctx.stroke();\n }\n ctx.restore();\n}\n\n/**\n * Render a square control, as per fabric features.\n * This function is written to respect object properties like transparentCorners, cornerSize\n * cornerColor, cornerStrokeColor\n * plus the addition of offsetY and offsetX.\n * @param {CanvasRenderingContext2D} ctx context to render on\n * @param {Number} left x coordinate where the control center should be\n * @param {Number} top y coordinate where the control center should be\n * @param {Object} styleOverride override for fabric.Object controls style\n * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls\n */\nexport function renderSquareControl(\n ctx,\n left,\n top,\n styleOverride,\n fabricObject\n) {\n styleOverride = styleOverride || {};\n var xSize = this.sizeX || styleOverride.cornerSize || fabricObject.cornerSize,\n ySize = this.sizeY || styleOverride.cornerSize || fabricObject.cornerSize,\n transparentCorners =\n typeof styleOverride.transparentCorners !== 'undefined'\n ? styleOverride.transparentCorners\n : fabricObject.transparentCorners,\n methodName = transparentCorners ? 'stroke' : 'fill',\n stroke =\n !transparentCorners &&\n (styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor),\n xSizeBy2 = xSize / 2,\n ySizeBy2 = ySize / 2;\n ctx.save();\n ctx.fillStyle = styleOverride.cornerColor || fabricObject.cornerColor;\n ctx.strokeStyle =\n styleOverride.cornerStrokeColor || fabricObject.cornerStrokeColor;\n // this is still wrong\n ctx.lineWidth = 1;\n ctx.translate(left, top);\n // angle is relative to canvas plane\n var angle = fabricObject.getTotalAngle();\n ctx.rotate(degreesToRadians(angle));\n // this does not work, and fixed with ( && ) does not make sense.\n // to have real transparent corners we need the controls on upperCanvas\n // transparentCorners || ctx.clearRect(-xSizeBy2, -ySizeBy2, xSize, ySize);\n ctx[methodName + 'Rect'](-xSizeBy2, -ySizeBy2, xSize, ySize);\n if (stroke) {\n ctx.strokeRect(-xSizeBy2, -ySizeBy2, xSize, ySize);\n }\n ctx.restore();\n}\n","//@ts-nocheck\n\nimport { renderCircleControl, renderSquareControl } from './controls.render';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {});\n\n function Control(options) {\n for (var i in options) {\n this[i] = options[i];\n }\n }\n\n fabric.Control = Control;\n\n fabric.Control.prototype = /** @lends fabric.Control.prototype */ {\n /**\n * keep track of control visibility.\n * mainly for backward compatibility.\n * if you do not want to see a control, you can remove it\n * from the controlset.\n * @type {Boolean}\n * @default true\n */\n visible: true,\n\n /**\n * Name of the action that the control will likely execute.\n * This is optional. FabricJS uses to identify what the user is doing for some\n * extra optimizations. If you are writing a custom control and you want to know\n * somewhere else in the code what is going on, you can use this string here.\n * you can also provide a custom getActionName if your control run multiple actions\n * depending on some external state.\n * default to scale since is the most common, used on 4 corners by default\n * @type {String}\n * @default 'scale'\n */\n actionName: 'scale',\n\n /**\n * Drawing angle of the control.\n * NOT used for now, but name marked as needed for internal logic\n * example: to reuse the same drawing function for different rotated controls\n * @type {Number}\n * @default 0\n */\n angle: 0,\n\n /**\n * Relative position of the control. X\n * 0,0 is the center of the Object, while -0.5 (left) or 0.5 (right) are the extremities\n * of the bounding box.\n * @type {Number}\n * @default 0\n */\n x: 0,\n\n /**\n * Relative position of the control. Y\n * 0,0 is the center of the Object, while -0.5 (top) or 0.5 (bottom) are the extremities\n * of the bounding box.\n * @type {Number}\n * @default 0\n */\n y: 0,\n\n /**\n * Horizontal offset of the control from the defined position. In pixels\n * Positive offset moves the control to the right, negative to the left.\n * It used when you want to have position of control that does not scale with\n * the bounding box. Example: rotation control is placed at x:0, y: 0.5 on\n * the boundindbox, with an offset of 30 pixels vertically. Those 30 pixels will\n * stay 30 pixels no matter how the object is big. Another example is having 2\n * controls in the corner, that stay in the same position when the object scale.\n * of the bounding box.\n * @type {Number}\n * @default 0\n */\n offsetX: 0,\n\n /**\n * Vertical offset of the control from the defined position. In pixels\n * Positive offset moves the control to the bottom, negative to the top.\n * @type {Number}\n * @default 0\n */\n offsetY: 0,\n\n /**\n * Sets the length of the control. If null, defaults to object's cornerSize.\n * Expects both sizeX and sizeY to be set when set.\n * @type {?Number}\n * @default null\n */\n sizeX: null,\n\n /**\n * Sets the height of the control. If null, defaults to object's cornerSize.\n * Expects both sizeX and sizeY to be set when set.\n * @type {?Number}\n * @default null\n */\n sizeY: null,\n\n /**\n * Sets the length of the touch area of the control. If null, defaults to object's touchCornerSize.\n * Expects both touchSizeX and touchSizeY to be set when set.\n * @type {?Number}\n * @default null\n */\n touchSizeX: null,\n\n /**\n * Sets the height of the touch area of the control. If null, defaults to object's touchCornerSize.\n * Expects both touchSizeX and touchSizeY to be set when set.\n * @type {?Number}\n * @default null\n */\n touchSizeY: null,\n\n /**\n * Css cursor style to display when the control is hovered.\n * if the method `cursorStyleHandler` is provided, this property is ignored.\n * @type {String}\n * @default 'crosshair'\n */\n cursorStyle: 'crosshair',\n\n /**\n * If controls has an offsetY or offsetX, draw a line that connects\n * the control to the bounding box\n * @type {Boolean}\n * @default false\n */\n withConnection: false,\n\n /**\n * The control actionHandler, provide one to handle action ( control being moved )\n * @param {Event} eventData the native mouse event\n * @param {Object} transformData properties of the current transform\n * @param {Number} x x position of the cursor\n * @param {Number} y y position of the cursor\n * @return {Boolean} true if the action/event modified the object\n */\n actionHandler: function (/* eventData, transformData, x, y */) {},\n\n /**\n * The control handler for mouse down, provide one to handle mouse down on control\n * @param {Event} eventData the native mouse event\n * @param {Object} transformData properties of the current transform\n * @param {Number} x x position of the cursor\n * @param {Number} y y position of the cursor\n * @return {Boolean} true if the action/event modified the object\n */\n mouseDownHandler: function (/* eventData, transformData, x, y */) {},\n\n /**\n * The control mouseUpHandler, provide one to handle an effect on mouse up.\n * @param {Event} eventData the native mouse event\n * @param {Object} transformData properties of the current transform\n * @param {Number} x x position of the cursor\n * @param {Number} y y position of the cursor\n * @return {Boolean} true if the action/event modified the object\n */\n mouseUpHandler: function (/* eventData, transformData, x, y */) {},\n\n /**\n * Returns control actionHandler\n * @param {Event} eventData the native mouse event\n * @param {fabric.Object} fabricObject on which the control is displayed\n * @param {fabric.Control} control control for which the action handler is being asked\n * @return {Function} the action handler\n */\n getActionHandler: function (/* eventData, fabricObject, control */) {\n return this.actionHandler;\n },\n\n /**\n * Returns control mouseDown handler\n * @param {Event} eventData the native mouse event\n * @param {fabric.Object} fabricObject on which the control is displayed\n * @param {fabric.Control} control control for which the action handler is being asked\n * @return {Function} the action handler\n */\n getMouseDownHandler: function (/* eventData, fabricObject, control */) {\n return this.mouseDownHandler;\n },\n\n /**\n * Returns control mouseUp handler\n * @param {Event} eventData the native mouse event\n * @param {fabric.Object} fabricObject on which the control is displayed\n * @param {fabric.Control} control control for which the action handler is being asked\n * @return {Function} the action handler\n */\n getMouseUpHandler: function (/* eventData, fabricObject, control */) {\n return this.mouseUpHandler;\n },\n\n /**\n * Returns control cursorStyle for css using cursorStyle. If you need a more elaborate\n * function you can pass one in the constructor\n * the cursorStyle property\n * @param {Event} eventData the native mouse event\n * @param {fabric.Control} control the current control ( likely this)\n * @param {fabric.Object} object on which the control is displayed\n * @return {String}\n */\n cursorStyleHandler: function (eventData, control /* fabricObject */) {\n return control.cursorStyle;\n },\n\n /**\n * Returns the action name. The basic implementation just return the actionName property.\n * @param {Event} eventData the native mouse event\n * @param {fabric.Control} control the current control ( likely this)\n * @param {fabric.Object} object on which the control is displayed\n * @return {String}\n */\n getActionName: function (eventData, control /* fabricObject */) {\n return control.actionName;\n },\n\n /**\n * Returns controls visibility\n * @param {fabric.Object} object on which the control is displayed\n * @param {String} controlKey key where the control is memorized on the\n * @return {Boolean}\n */\n getVisibility: function (fabricObject, controlKey) {\n var objectVisibility = fabricObject._controlsVisibility;\n if (\n objectVisibility &&\n typeof objectVisibility[controlKey] !== 'undefined'\n ) {\n return objectVisibility[controlKey];\n }\n return this.visible;\n },\n\n /**\n * Sets controls visibility\n * @param {Boolean} visibility for the object\n * @return {Void}\n */\n setVisibility: function (visibility /* name, fabricObject */) {\n this.visible = visibility;\n },\n\n positionHandler: function (\n dim,\n finalMatrix /*, fabricObject, currentControl */\n ) {\n var point = fabric.util.transformPoint(\n {\n x: this.x * dim.x + this.offsetX,\n y: this.y * dim.y + this.offsetY,\n },\n finalMatrix\n );\n return point;\n },\n\n /**\n * Returns the coords for this control based on object values.\n * @param {Number} objectAngle angle from the fabric object holding the control\n * @param {Number} objectCornerSize cornerSize from the fabric object holding the control (or touchCornerSize if\n * isTouch is true)\n * @param {Number} centerX x coordinate where the control center should be\n * @param {Number} centerY y coordinate where the control center should be\n * @param {boolean} isTouch true if touch corner, false if normal corner\n */\n calcCornerCoords: function (\n objectAngle,\n objectCornerSize,\n centerX,\n centerY,\n isTouch\n ) {\n var cosHalfOffset,\n sinHalfOffset,\n cosHalfOffsetComp,\n sinHalfOffsetComp,\n xSize = isTouch ? this.touchSizeX : this.sizeX,\n ySize = isTouch ? this.touchSizeY : this.sizeY;\n if (xSize && ySize && xSize !== ySize) {\n // handle rectangular corners\n var controlTriangleAngle = Math.atan2(ySize, xSize);\n var cornerHypotenuse = Math.sqrt(xSize * xSize + ySize * ySize) / 2;\n var newTheta =\n controlTriangleAngle - fabric.util.degreesToRadians(objectAngle);\n var newThetaComp =\n Math.PI / 2 -\n controlTriangleAngle -\n fabric.util.degreesToRadians(objectAngle);\n cosHalfOffset = cornerHypotenuse * fabric.util.cos(newTheta);\n sinHalfOffset = cornerHypotenuse * fabric.util.sin(newTheta);\n // use complementary angle for two corners\n cosHalfOffsetComp = cornerHypotenuse * fabric.util.cos(newThetaComp);\n sinHalfOffsetComp = cornerHypotenuse * fabric.util.sin(newThetaComp);\n } else {\n // handle square corners\n // use default object corner size unless size is defined\n var cornerSize = xSize && ySize ? xSize : objectCornerSize;\n /* 0.7071067812 stands for sqrt(2)/2 */\n cornerHypotenuse = cornerSize * 0.7071067812;\n // complementary angles are equal since they're both 45 degrees\n var newTheta = fabric.util.degreesToRadians(45 - objectAngle);\n cosHalfOffset = cosHalfOffsetComp =\n cornerHypotenuse * fabric.util.cos(newTheta);\n sinHalfOffset = sinHalfOffsetComp =\n cornerHypotenuse * fabric.util.sin(newTheta);\n }\n\n return {\n tl: {\n x: centerX - sinHalfOffsetComp,\n y: centerY - cosHalfOffsetComp,\n },\n tr: {\n x: centerX + cosHalfOffset,\n y: centerY - sinHalfOffset,\n },\n bl: {\n x: centerX - cosHalfOffset,\n y: centerY + sinHalfOffset,\n },\n br: {\n x: centerX + sinHalfOffsetComp,\n y: centerY + cosHalfOffsetComp,\n },\n };\n },\n\n /**\n * Render function for the control.\n * When this function runs the context is unscaled. unrotate. Just retina scaled.\n * all the functions will have to translate to the point left,top before starting Drawing\n * if they want to draw a control where the position is detected.\n * left and top are the result of the positionHandler function\n * @param {RenderingContext2D} ctx the context where the control will be drawn\n * @param {Number} left position of the canvas where we are about to render the control.\n * @param {Number} top position of the canvas where we are about to render the control.\n * @param {Object} styleOverride\n * @param {fabric.Object} fabricObject the object where the control is about to be rendered\n */\n render: function (ctx, left, top, styleOverride, fabricObject) {\n styleOverride = styleOverride || {};\n switch (styleOverride.cornerStyle || fabricObject.cornerStyle) {\n case 'circle':\n renderCircleControl.call(\n this,\n ctx,\n left,\n top,\n styleOverride,\n fabricObject\n );\n break;\n default:\n renderSquareControl.call(\n this,\n ctx,\n left,\n top,\n styleOverride,\n fabricObject\n );\n }\n },\n };\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n\nimport { Point } from '../point.class';\nimport { fireEvent } from '../util/fireEvent';\nimport { renderCircleControl, renderSquareControl } from './controls.render';\n\n(function (global) {\n var fabric = global.fabric || (global.fabric = {}),\n scaleMap = ['e', 'se', 's', 'sw', 'w', 'nw', 'n', 'ne', 'e'],\n skewMap = ['ns', 'nesw', 'ew', 'nwse'],\n controls = {},\n LEFT = 'left',\n TOP = 'top',\n RIGHT = 'right',\n BOTTOM = 'bottom',\n CENTER = 'center',\n opposite = {\n top: BOTTOM,\n bottom: TOP,\n left: RIGHT,\n right: LEFT,\n center: CENTER,\n },\n radiansToDegrees = fabric.util.radiansToDegrees,\n sign =\n Math.sign ||\n function (x) {\n return (x > 0) - (x < 0) || +x;\n };\n\n /**\n * Combine control position and object angle to find the control direction compared\n * to the object center.\n * @param {fabric.Object} fabricObject the fabric object for which we are rendering controls\n * @param {fabric.Control} control the control class\n * @return {Number} 0 - 7 a quadrant number\n */\n function findCornerQuadrant(fabricObject, control) {\n // angle is relative to canvas plane\n var angle = fabricObject.getTotalAngle();\n var cornerAngle =\n angle + radiansToDegrees(Math.atan2(control.y, control.x)) + 360;\n return Math.round((cornerAngle % 360) / 45);\n }\n\n /**\n * Inspect event and fabricObject properties to understand if the scaling action\n * @param {Event} eventData from the user action\n * @param {fabric.Object} fabricObject the fabric object about to scale\n * @return {Boolean} true if scale is proportional\n */\n function scaleIsProportional(eventData, fabricObject) {\n var canvas = fabricObject.canvas,\n uniScaleKey = canvas.uniScaleKey,\n uniformIsToggled = eventData[uniScaleKey];\n return (\n (canvas.uniformScaling && !uniformIsToggled) ||\n (!canvas.uniformScaling && uniformIsToggled)\n );\n }\n\n /**\n * Checks if transform is centered\n * @param {Object} transform transform data\n * @return {Boolean} true if transform is centered\n */\n function isTransformCentered(transform) {\n return transform.originX === CENTER && transform.originY === CENTER;\n }\n\n /**\n * Inspect fabricObject to understand if the current scaling action is allowed\n * @param {fabric.Object} fabricObject the fabric object about to scale\n * @param {String} by 'x' or 'y' or ''\n * @param {Boolean} scaleProportionally true if we are trying to scale proportionally\n * @return {Boolean} true if scaling is not allowed at current conditions\n */\n function scalingIsForbidden(fabricObject, by, scaleProportionally) {\n var lockX = fabricObject.lockScalingX,\n lockY = fabricObject.lockScalingY;\n if (lockX && lockY) {\n return true;\n }\n if (!by && (lockX || lockY) && scaleProportionally) {\n return true;\n }\n if (lockX && by === 'x') {\n return true;\n }\n if (lockY && by === 'y') {\n return true;\n }\n return false;\n }\n\n /**\n * return the correct cursor style for the scale action\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} a valid css string for the cursor\n */\n function scaleCursorStyleHandler(eventData, control, fabricObject) {\n var notAllowed = 'not-allowed',\n scaleProportionally = scaleIsProportional(eventData, fabricObject),\n by = '';\n if (control.x !== 0 && control.y === 0) {\n by = 'x';\n } else if (control.x === 0 && control.y !== 0) {\n by = 'y';\n }\n if (scalingIsForbidden(fabricObject, by, scaleProportionally)) {\n return notAllowed;\n }\n var n = findCornerQuadrant(fabricObject, control);\n return scaleMap[n] + '-resize';\n }\n\n /**\n * return the correct cursor style for the skew action\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} a valid css string for the cursor\n */\n function skewCursorStyleHandler(eventData, control, fabricObject) {\n var notAllowed = 'not-allowed';\n if (control.x !== 0 && fabricObject.lockSkewingY) {\n return notAllowed;\n }\n if (control.y !== 0 && fabricObject.lockSkewingX) {\n return notAllowed;\n }\n var n = findCornerQuadrant(fabricObject, control) % 4;\n return skewMap[n] + '-resize';\n }\n\n /**\n * Combine skew and scale style handlers to cover fabric standard use case\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} a valid css string for the cursor\n */\n function scaleSkewCursorStyleHandler(eventData, control, fabricObject) {\n if (eventData[fabricObject.canvas.altActionKey]) {\n return controls.skewCursorStyleHandler(eventData, control, fabricObject);\n }\n return controls.scaleCursorStyleHandler(eventData, control, fabricObject);\n }\n\n /**\n * Inspect event, control and fabricObject to return the correct action name\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} an action name\n */\n function scaleOrSkewActionName(eventData, control, fabricObject) {\n var isAlternative = eventData[fabricObject.canvas.altActionKey];\n if (control.x === 0) {\n // then is scaleY or skewX\n return isAlternative ? 'skewX' : 'scaleY';\n }\n if (control.y === 0) {\n // then is scaleY or skewX\n return isAlternative ? 'skewY' : 'scaleX';\n }\n }\n\n /**\n * Find the correct style for the control that is used for rotation.\n * this function is very simple and it just take care of not-allowed or standard cursor\n * @param {Event} eventData the javascript event that is causing the scale\n * @param {fabric.Control} control the control that is interested in the action\n * @param {fabric.Object} fabricObject the fabric object that is interested in the action\n * @return {String} a valid css string for the cursor\n */\n function rotationStyleHandler(eventData, control, fabricObject) {\n if (fabricObject.lockRotation) {\n return 'not-allowed';\n }\n return control.cursorStyle;\n }\n\n function commonEventInfo(eventData, transform, x, y) {\n return {\n e: eventData,\n transform: transform,\n pointer: {\n x: x,\n y: y,\n },\n };\n }\n\n /**\n * Wrap an action handler with saving/restoring object position on the transform.\n * this is the code that permits to objects to keep their position while transforming.\n * @param {Function} actionHandler the function to wrap\n * @return {Function} a function with an action handler signature\n */\n function wrapWithFixedAnchor(actionHandler) {\n return function (eventData, transform, x, y) {\n var target = transform.target,\n centerPoint = target.getRelativeCenterPoint(),\n constraint = target.translateToOriginPoint(\n centerPoint,\n transform.originX,\n transform.originY\n ),\n actionPerformed = actionHandler(eventData, transform, x, y);\n target.setPositionByOrigin(\n constraint,\n transform.originX,\n transform.originY\n );\n return actionPerformed;\n };\n }\n\n /**\n * Wrap an action handler with firing an event if the action is performed\n * @param {Function} actionHandler the function to wrap\n * @return {Function} a function with an action handler signature\n */\n function wrapWithFireEvent(eventName, actionHandler) {\n return function (eventData, transform, x, y) {\n var actionPerformed = actionHandler(eventData, transform, x, y);\n if (actionPerformed) {\n fireEvent(eventName, commonEventInfo(eventData, transform, x, y));\n }\n return actionPerformed;\n };\n }\n\n /**\n * Transforms a point described by x and y in a distance from the top left corner of the object\n * bounding box.\n * @param {Object} transform\n * @param {String} originX\n * @param {String} originY\n * @param {number} x\n * @param {number} y\n * @return {Fabric.Point} the normalized point\n */\n function getLocalPoint(transform, originX, originY, x, y) {\n var target = transform.target,\n control = target.controls[transform.corner],\n zoom = target.canvas.getZoom(),\n padding = target.padding / zoom,\n localPoint = target.normalizePoint(new Point(x, y), originX, originY);\n if (localPoint.x >= padding) {\n localPoint.x -= padding;\n }\n if (localPoint.x <= -padding) {\n localPoint.x += padding;\n }\n if (localPoint.y >= padding) {\n localPoint.y -= padding;\n }\n if (localPoint.y <= padding) {\n localPoint.y += padding;\n }\n localPoint.x -= control.offsetX;\n localPoint.y -= control.offsetY;\n return localPoint;\n }\n\n /**\n * Detect if the fabric object is flipped on one side.\n * @param {fabric.Object} target\n * @return {Boolean} true if one flip, but not two.\n */\n function targetHasOneFlip(target) {\n return target.flipX !== target.flipY;\n }\n\n /**\n * Utility function to compensate the scale factor when skew is applied on both axes\n * @private\n */\n function compensateScaleForSkew(\n target,\n oppositeSkew,\n scaleToCompensate,\n axis,\n reference\n ) {\n if (target[oppositeSkew] !== 0) {\n var newDim = target._getTransformedDimensions()[axis];\n var newValue = (reference / newDim) * target[scaleToCompensate];\n target.set(scaleToCompensate, newValue);\n }\n }\n\n /**\n * Action handler for skewing on the X axis\n * @private\n */\n function skewObjectX(eventData, transform, x, y) {\n var target = transform.target,\n // find how big the object would be, if there was no skewX. takes in account scaling\n dimNoSkew = target._getTransformedDimensions({\n skewX: 0,\n skewY: target.skewY,\n }),\n localPoint = getLocalPoint(\n transform,\n transform.originX,\n transform.originY,\n x,\n y\n ),\n // the mouse is in the center of the object, and we want it to stay there.\n // so the object will grow twice as much as the mouse.\n // this makes the skew growth to localPoint * 2 - dimNoSkew.\n totalSkewSize = Math.abs(localPoint.x * 2) - dimNoSkew.x,\n currentSkew = target.skewX,\n newSkew;\n if (totalSkewSize < 2) {\n // let's make it easy to go back to position 0.\n newSkew = 0;\n } else {\n newSkew = radiansToDegrees(\n Math.atan2(totalSkewSize / target.scaleX, dimNoSkew.y / target.scaleY)\n );\n // now we have to find the sign of the skew.\n // it mostly depend on the origin of transformation.\n if (transform.originX === LEFT && transform.originY === BOTTOM) {\n newSkew = -newSkew;\n }\n if (transform.originX === RIGHT && transform.originY === TOP) {\n newSkew = -newSkew;\n }\n if (targetHasOneFlip(target)) {\n newSkew = -newSkew;\n }\n }\n var hasSkewed = currentSkew !== newSkew;\n if (hasSkewed) {\n var dimBeforeSkewing = target._getTransformedDimensions().y;\n target.set('skewX', newSkew);\n compensateScaleForSkew(target, 'skewY', 'scaleY', 'y', dimBeforeSkewing);\n }\n return hasSkewed;\n }\n\n /**\n * Action handler for skewing on the Y axis\n * @private\n */\n function skewObjectY(eventData, transform, x, y) {\n var target = transform.target,\n // find how big the object would be, if there was no skewX. takes in account scaling\n dimNoSkew = target._getTransformedDimensions({\n skewX: target.skewX,\n skewY: 0,\n }),\n localPoint = getLocalPoint(\n transform,\n transform.originX,\n transform.originY,\n x,\n y\n ),\n // the mouse is in the center of the object, and we want it to stay there.\n // so the object will grow twice as much as the mouse.\n // this makes the skew growth to localPoint * 2 - dimNoSkew.\n totalSkewSize = Math.abs(localPoint.y * 2) - dimNoSkew.y,\n currentSkew = target.skewY,\n newSkew;\n if (totalSkewSize < 2) {\n // let's make it easy to go back to position 0.\n newSkew = 0;\n } else {\n newSkew = radiansToDegrees(\n Math.atan2(totalSkewSize / target.scaleY, dimNoSkew.x / target.scaleX)\n );\n // now we have to find the sign of the skew.\n // it mostly depend on the origin of transformation.\n if (transform.originX === LEFT && transform.originY === BOTTOM) {\n newSkew = -newSkew;\n }\n if (transform.originX === RIGHT && transform.originY === TOP) {\n newSkew = -newSkew;\n }\n if (targetHasOneFlip(target)) {\n newSkew = -newSkew;\n }\n }\n var hasSkewed = currentSkew !== newSkew;\n if (hasSkewed) {\n var dimBeforeSkewing = target._getTransformedDimensions().x;\n target.set('skewY', newSkew);\n compensateScaleForSkew(target, 'skewX', 'scaleX', 'x', dimBeforeSkewing);\n }\n return hasSkewed;\n }\n\n /**\n * Wrapped Action handler for skewing on the Y axis, takes care of the\n * skew direction and determine the correct transform origin for the anchor point\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function skewHandlerX(eventData, transform, x, y) {\n // step1 figure out and change transform origin.\n // if skewX > 0 and originY bottom we anchor on right\n // if skewX > 0 and originY top we anchor on left\n // if skewX < 0 and originY bottom we anchor on left\n // if skewX < 0 and originY top we anchor on right\n // if skewX is 0, we look for mouse position to understand where are we going.\n var target = transform.target,\n currentSkew = target.skewX,\n originX,\n originY = transform.originY;\n if (target.lockSkewingX) {\n return false;\n }\n if (currentSkew === 0) {\n var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y);\n if (localPointFromCenter.x > 0) {\n // we are pulling right, anchor left;\n originX = LEFT;\n } else {\n // we are pulling right, anchor right\n originX = RIGHT;\n }\n } else {\n if (currentSkew > 0) {\n originX = originY === TOP ? LEFT : RIGHT;\n }\n if (currentSkew < 0) {\n originX = originY === TOP ? RIGHT : LEFT;\n }\n // is the object flipped on one side only? swap the origin.\n if (targetHasOneFlip(target)) {\n originX = originX === LEFT ? RIGHT : LEFT;\n }\n }\n\n // once we have the origin, we find the anchor point\n transform.originX = originX;\n var finalHandler = wrapWithFireEvent(\n 'skewing',\n wrapWithFixedAnchor(skewObjectX)\n );\n return finalHandler(eventData, transform, x, y);\n }\n\n /**\n * Wrapped Action handler for skewing on the Y axis, takes care of the\n * skew direction and determine the correct transform origin for the anchor point\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function skewHandlerY(eventData, transform, x, y) {\n // step1 figure out and change transform origin.\n // if skewY > 0 and originX left we anchor on top\n // if skewY > 0 and originX right we anchor on bottom\n // if skewY < 0 and originX left we anchor on bottom\n // if skewY < 0 and originX right we anchor on top\n // if skewY is 0, we look for mouse position to understand where are we going.\n var target = transform.target,\n currentSkew = target.skewY,\n originY,\n originX = transform.originX;\n if (target.lockSkewingY) {\n return false;\n }\n if (currentSkew === 0) {\n var localPointFromCenter = getLocalPoint(transform, CENTER, CENTER, x, y);\n if (localPointFromCenter.y > 0) {\n // we are pulling down, anchor up;\n originY = TOP;\n } else {\n // we are pulling up, anchor down\n originY = BOTTOM;\n }\n } else {\n if (currentSkew > 0) {\n originY = originX === LEFT ? TOP : BOTTOM;\n }\n if (currentSkew < 0) {\n originY = originX === LEFT ? BOTTOM : TOP;\n }\n // is the object flipped on one side only? swap the origin.\n if (targetHasOneFlip(target)) {\n originY = originY === TOP ? BOTTOM : TOP;\n }\n }\n\n // once we have the origin, we find the anchor point\n transform.originY = originY;\n var finalHandler = wrapWithFireEvent(\n 'skewing',\n wrapWithFixedAnchor(skewObjectY)\n );\n return finalHandler(eventData, transform, x, y);\n }\n\n /**\n * Action handler for rotation and snapping, without anchor point.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n * @private\n */\n function rotationWithSnapping(eventData, transform, x, y) {\n var t = transform,\n target = t.target,\n pivotPoint = target.translateToOriginPoint(\n target.getRelativeCenterPoint(),\n t.originX,\n t.originY\n );\n\n if (target.lockRotation) {\n return false;\n }\n\n var lastAngle = Math.atan2(t.ey - pivotPoint.y, t.ex - pivotPoint.x),\n curAngle = Math.atan2(y - pivotPoint.y, x - pivotPoint.x),\n angle = radiansToDegrees(curAngle - lastAngle + t.theta),\n hasRotated = true;\n\n if (target.snapAngle > 0) {\n var snapAngle = target.snapAngle,\n snapThreshold = target.snapThreshold || snapAngle,\n rightAngleLocked = Math.ceil(angle / snapAngle) * snapAngle,\n leftAngleLocked = Math.floor(angle / snapAngle) * snapAngle;\n\n if (Math.abs(angle - leftAngleLocked) < snapThreshold) {\n angle = leftAngleLocked;\n } else if (Math.abs(angle - rightAngleLocked) < snapThreshold) {\n angle = rightAngleLocked;\n }\n }\n\n // normalize angle to positive value\n if (angle < 0) {\n angle = 360 + angle;\n }\n angle %= 360;\n\n hasRotated = target.angle !== angle;\n target.angle = angle;\n return hasRotated;\n }\n\n /**\n * Basic scaling logic, reused with different constrain for scaling X,Y, freely or equally.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @param {Object} options additional information for scaling\n * @param {String} options.by 'x', 'y', 'equally' or '' to indicate type of scaling\n * @return {Boolean} true if some change happened\n * @private\n */\n function scaleObject(eventData, transform, x, y, options) {\n options = options || {};\n var target = transform.target,\n lockScalingX = target.lockScalingX,\n lockScalingY = target.lockScalingY,\n by = options.by,\n newPoint,\n scaleX,\n scaleY,\n dim,\n scaleProportionally = scaleIsProportional(eventData, target),\n forbidScaling = scalingIsForbidden(target, by, scaleProportionally),\n signX,\n signY,\n gestureScale = transform.gestureScale;\n\n if (forbidScaling) {\n return false;\n }\n if (gestureScale) {\n scaleX = transform.scaleX * gestureScale;\n scaleY = transform.scaleY * gestureScale;\n } else {\n newPoint = getLocalPoint(\n transform,\n transform.originX,\n transform.originY,\n x,\n y\n );\n // use of sign: We use sign to detect change of direction of an action. sign usually change when\n // we cross the origin point with the mouse. So a scale flip for example. There is an issue when scaling\n // by center and scaling using one middle control ( default: mr, mt, ml, mb), the mouse movement can easily\n // cross many time the origin point and flip the object. so we need a way to filter out the noise.\n // This ternary here should be ok to filter out X scaling when we want Y only and vice versa.\n signX = by !== 'y' ? sign(newPoint.x) : 1;\n signY = by !== 'x' ? sign(newPoint.y) : 1;\n if (!transform.signX) {\n transform.signX = signX;\n }\n if (!transform.signY) {\n transform.signY = signY;\n }\n\n if (\n target.lockScalingFlip &&\n (transform.signX !== signX || transform.signY !== signY)\n ) {\n return false;\n }\n\n dim = target._getTransformedDimensions();\n // missing detection of flip and logic to switch the origin\n if (scaleProportionally && !by) {\n // uniform scaling\n var distance = Math.abs(newPoint.x) + Math.abs(newPoint.y),\n original = transform.original,\n originalDistance =\n Math.abs((dim.x * original.scaleX) / target.scaleX) +\n Math.abs((dim.y * original.scaleY) / target.scaleY),\n scale = distance / originalDistance;\n scaleX = original.scaleX * scale;\n scaleY = original.scaleY * scale;\n } else {\n scaleX = Math.abs((newPoint.x * target.scaleX) / dim.x);\n scaleY = Math.abs((newPoint.y * target.scaleY) / dim.y);\n }\n // if we are scaling by center, we need to double the scale\n if (isTransformCentered(transform)) {\n scaleX *= 2;\n scaleY *= 2;\n }\n if (transform.signX !== signX && by !== 'y') {\n transform.originX = opposite[transform.originX];\n scaleX *= -1;\n transform.signX = signX;\n }\n if (transform.signY !== signY && by !== 'x') {\n transform.originY = opposite[transform.originY];\n scaleY *= -1;\n transform.signY = signY;\n }\n }\n // minScale is taken are in the setter.\n var oldScaleX = target.scaleX,\n oldScaleY = target.scaleY;\n if (!by) {\n !lockScalingX && target.set('scaleX', scaleX);\n !lockScalingY && target.set('scaleY', scaleY);\n } else {\n // forbidden cases already handled on top here.\n by === 'x' && target.set('scaleX', scaleX);\n by === 'y' && target.set('scaleY', scaleY);\n }\n return oldScaleX !== target.scaleX || oldScaleY !== target.scaleY;\n }\n\n /**\n * Generic scaling logic, to scale from corners either equally or freely.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scaleObjectFromCorner(eventData, transform, x, y) {\n return scaleObject(eventData, transform, x, y);\n }\n\n /**\n * Scaling logic for the X axis.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scaleObjectX(eventData, transform, x, y) {\n return scaleObject(eventData, transform, x, y, { by: 'x' });\n }\n\n /**\n * Scaling logic for the Y axis.\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scaleObjectY(eventData, transform, x, y) {\n return scaleObject(eventData, transform, x, y, { by: 'y' });\n }\n\n /**\n * Composed action handler to either scale Y or skew X\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scalingYOrSkewingX(eventData, transform, x, y) {\n // ok some safety needed here.\n if (eventData[transform.target.canvas.altActionKey]) {\n return controls.skewHandlerX(eventData, transform, x, y);\n }\n return controls.scalingY(eventData, transform, x, y);\n }\n\n /**\n * Composed action handler to either scale X or skew Y\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function scalingXOrSkewingY(eventData, transform, x, y) {\n // ok some safety needed here.\n if (eventData[transform.target.canvas.altActionKey]) {\n return controls.skewHandlerY(eventData, transform, x, y);\n }\n return controls.scalingX(eventData, transform, x, y);\n }\n\n /**\n * Action handler to change textbox width\n * Needs to be wrapped with `wrapWithFixedAnchor` to be effective\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if some change happened\n */\n function changeWidth(eventData, transform, x, y) {\n var localPoint = getLocalPoint(\n transform,\n transform.originX,\n transform.originY,\n x,\n y\n );\n // make sure the control changes width ONLY from it's side of target\n if (\n transform.originX === 'center' ||\n (transform.originX === 'right' && localPoint.x < 0) ||\n (transform.originX === 'left' && localPoint.x > 0)\n ) {\n var target = transform.target,\n strokePadding =\n target.strokeWidth / (target.strokeUniform ? target.scaleX : 1),\n multiplier = isTransformCentered(transform) ? 2 : 1,\n oldWidth = target.width,\n newWidth = Math.ceil(\n Math.abs((localPoint.x * multiplier) / target.scaleX) - strokePadding\n );\n target.set('width', Math.max(newWidth, 0));\n // check against actual target width in case `newWidth` was rejected\n return oldWidth !== target.width;\n }\n return false;\n }\n\n /**\n * Action handler\n * @private\n * @param {Event} eventData javascript event that is doing the transform\n * @param {Object} transform javascript object containing a series of information around the current transform\n * @param {number} x current mouse x position, canvas normalized\n * @param {number} y current mouse y position, canvas normalized\n * @return {Boolean} true if the translation occurred\n */\n function dragHandler(eventData, transform, x, y) {\n var target = transform.target,\n newLeft = x - transform.offsetX,\n newTop = y - transform.offsetY,\n moveX = !target.get('lockMovementX') && target.left !== newLeft,\n moveY = !target.get('lockMovementY') && target.top !== newTop;\n moveX && target.set('left', newLeft);\n moveY && target.set('top', newTop);\n if (moveX || moveY) {\n fireEvent('moving', commonEventInfo(eventData, transform, x, y));\n }\n return moveX || moveY;\n }\n\n controls.scaleCursorStyleHandler = scaleCursorStyleHandler;\n controls.skewCursorStyleHandler = skewCursorStyleHandler;\n controls.scaleSkewCursorStyleHandler = scaleSkewCursorStyleHandler;\n controls.rotationWithSnapping = wrapWithFireEvent(\n 'rotating',\n wrapWithFixedAnchor(rotationWithSnapping)\n );\n controls.scalingEqually = wrapWithFireEvent(\n 'scaling',\n wrapWithFixedAnchor(scaleObjectFromCorner)\n );\n controls.scalingX = wrapWithFireEvent(\n 'scaling',\n wrapWithFixedAnchor(scaleObjectX)\n );\n controls.scalingY = wrapWithFireEvent(\n 'scaling',\n wrapWithFixedAnchor(scaleObjectY)\n );\n controls.scalingYOrSkewingX = scalingYOrSkewingX;\n controls.scalingXOrSkewingY = scalingXOrSkewingY;\n controls.changeWidth = wrapWithFireEvent(\n 'resizing',\n wrapWithFixedAnchor(changeWidth)\n );\n controls.skewHandlerX = skewHandlerX;\n controls.skewHandlerY = skewHandlerY;\n controls.dragHandler = dragHandler;\n controls.scaleOrSkewActionName = scaleOrSkewActionName;\n controls.rotationStyleHandler = rotationStyleHandler;\n controls.fireEvent = fireEvent;\n controls.wrapWithFixedAnchor = wrapWithFixedAnchor;\n controls.wrapWithFireEvent = wrapWithFireEvent;\n controls.getLocalPoint = getLocalPoint;\n controls.renderCircleControl = renderCircleControl;\n controls.renderSquareControl = renderSquareControl;\n fabric.controlsUtils = controls;\n})(typeof exports !== 'undefined' ? exports : window);\n","//@ts-nocheck\n(function (global) {\n var fabric = global.fabric,\n controlsUtils = fabric.controlsUtils,\n scaleSkewStyleHandler = controlsUtils.scaleSkewCursorStyleHandler,\n scaleStyleHandler = controlsUtils.scaleCursorStyleHandler,\n scalingEqually = controlsUtils.scalingEqually,\n scalingYOrSkewingX = controlsUtils.scalingYOrSkewingX,\n scalingXOrSkewingY = controlsUtils.scalingXOrSkewingY,\n scaleOrSkewActionName = controlsUtils.scaleOrSkewActionName,\n objectControls = fabric.Object.prototype.controls;\n\n objectControls.ml = new fabric.Control({\n x: -0.5,\n y: 0,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionHandler: scalingXOrSkewingY,\n getActionName: scaleOrSkewActionName,\n });\n\n objectControls.mr = new fabric.Control({\n x: 0.5,\n y: 0,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionHandler: scalingXOrSkewingY,\n getActionName: scaleOrSkewActionName,\n });\n\n objectControls.mb = new fabric.Control({\n x: 0,\n y: 0.5,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionHandler: scalingYOrSkewingX,\n getActionName: scaleOrSkewActionName,\n });\n\n objectControls.mt = new fabric.Control({\n x: 0,\n y: -0.5,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionHandler: scalingYOrSkewingX,\n getActionName: scaleOrSkewActionName,\n });\n\n objectControls.tl = new fabric.Control({\n x: -0.5,\n y: -0.5,\n cursorStyleHandler: scaleStyleHandler,\n actionHandler: scalingEqually,\n });\n\n objectControls.tr = new fabric.Control({\n x: 0.5,\n y: -0.5,\n cursorStyleHandler: scaleStyleHandler,\n actionHandler: scalingEqually,\n });\n\n objectControls.bl = new fabric.Control({\n x: -0.5,\n y: 0.5,\n cursorStyleHandler: scaleStyleHandler,\n actionHandler: scalingEqually,\n });\n\n objectControls.br = new fabric.Control({\n x: 0.5,\n y: 0.5,\n cursorStyleHandler: scaleStyleHandler,\n actionHandler: scalingEqually,\n });\n\n objectControls.mtr = new fabric.Control({\n x: 0,\n y: -0.5,\n actionHandler: controlsUtils.rotationWithSnapping,\n cursorStyleHandler: controlsUtils.rotationStyleHandler,\n offsetY: -40,\n withConnection: true,\n actionName: 'rotate',\n });\n\n if (fabric.Textbox) {\n // this is breaking the prototype inheritance, no time / ideas to fix it.\n // is important to document that if you want to have all objects to have a\n // specific custom control, you have to add it to Object prototype and to Textbox\n // prototype. The controls are shared as references. So changes to control `tr`\n // can still apply to all objects if needed.\n var textBoxControls = (fabric.Textbox.prototype.controls = {});\n\n textBoxControls.mtr = objectControls.mtr;\n textBoxControls.tr = objectControls.tr;\n textBoxControls.br = objectControls.br;\n textBoxControls.tl = objectControls.tl;\n textBoxControls.bl = objectControls.bl;\n textBoxControls.mt = objectControls.mt;\n textBoxControls.mb = objectControls.mb;\n\n textBoxControls.mr = new fabric.Control({\n x: 0.5,\n y: 0,\n actionHandler: controlsUtils.changeWidth,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionName: 'resizing',\n });\n\n textBoxControls.ml = new fabric.Control({\n x: -0.5,\n y: 0,\n actionHandler: controlsUtils.changeWidth,\n cursorStyleHandler: scaleSkewStyleHandler,\n actionName: 'resizing',\n });\n }\n})(typeof exports !== 'undefined' ? exports : window);\n","import { fabric } from '../../HEADER';\nimport { Color } from '../color';\nimport { Point } from '../point.class';\nimport { Canvas, Shadow } from '../__types__';\n\n/**\n * @see {@link http://fabricjs.com/freedrawing|Freedrawing demo}\n */\nexport abstract class BaseBrush {\n /**\n * Color of a brush\n * @type String\n * @default\n */\n color = 'rgb(0, 0, 0)';\n\n /**\n * Width of a brush, has to be a Number, no string literals\n * @type Number\n * @default\n */\n width = 1;\n\n /**\n * Shadow object representing shadow of this shape.\n * Backwards incompatibility note: This property replaces \"shadowColor\" (String), \"shadowOffsetX\" (Number),\n * \"shadowOffsetY\" (Number) and \"shadowBlur\" (Number) since v1.2.12\n * @type Shadow\n * @default\n */\n shadow: Shadow | null = null;\n\n /**\n * Line endings style of a brush (one of \"butt\", \"round\", \"square\")\n * @type String\n * @default\n */\n strokeLineCap: CanvasLineCap = 'round';\n\n /**\n * Corner style of a brush (one of \"bevel\", \"round\", \"miter\")\n * @type String\n * @default\n */\n strokeLineJoin: CanvasLineJoin = 'round';\n\n /**\n * Maximum miter length (used for strokeLineJoin = \"miter\") of a brush's\n * @type Number\n * @default\n */\n strokeMiterLimit = 10;\n\n /**\n * Stroke Dash Array.\n * @type Array\n * @default\n */\n strokeDashArray: number[] | null = null;\n\n /**\n * When `true`, the free drawing is limited to the whiteboard size. Default to false.\n * @type Boolean\n * @default false\n */\n\n limitedToCanvasSize = false;\n\n /**\n * @todo add type\n */\n canvas: Canvas;\n\n constructor(canvas: Canvas) {\n this.canvas = canvas;\n }\n\n /**\n * Sets brush styles\n * @private\n * @param {CanvasRenderingContext2D} ctx\n */\n _setBrushStyles(ctx: CanvasRenderingContext2D) {\n ctx.strokeStyle = this.color;\n ctx.lineWidth = this.width;\n ctx.lineCap = this.strokeLineCap;\n ctx.miterLimit = this.strokeMiterLimit;\n ctx.lineJoin = this.strokeLineJoin;\n ctx.setLineDash(this.strokeDashArray || []);\n }\n\n /**\n * Sets the transformation on given context\n * @param {CanvasRenderingContext2D} ctx context to render on\n * @private\n */\n protected _saveAndTransform(ctx: CanvasRenderingContext2D) {\n const v = this.canvas.viewportTransform;\n ctx.save();\n ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);\n }\n\n /**\n * Sets brush shadow styles\n * @private\n */\n protected _setShadow() {\n if (!this.shadow || !this.canvas) {\n return;\n }\n\n const canvas = this.canvas,\n shadow = this.shadow,\n ctx = canvas.contextTop,\n zoom = canvas.getZoom() * canvas.getRetinaScaling();\n\n ctx.shadowColor = shadow.color;\n ctx.shadowBlur = shadow.blur * zoom;\n ctx.shadowOffsetX = shadow.offsetX * zoom;\n ctx.shadowOffsetY = shadow.offsetY * zoom;\n }\n\n protected needsFullRender() {\n const color = new Color(this.color);\n return color.getAlpha() < 1 || !!this.shadow;\n }\n\n /**\n * Removes brush shadow styles\n * @private\n */\n protected _resetShadow() {\n const ctx = this.canvas.contextTop;\n\n ctx.shadowColor = '';\n ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0;\n }\n\n /**\n * Check is pointer is outside canvas boundaries\n * @param {Object} pointer\n * @private\n */\n protected _isOutSideCanvas(pointer: Point) {\n return (\n pointer.x < 0 ||\n pointer.x > this.canvas.getWidth() ||\n pointer.y < 0 ||\n pointer.y > this.canvas.getHeight()\n );\n }\n}\n\nfabric.BaseBrush = BaseBrush;\n","import { fabric } from '../../HEADER';\nimport { Color } from '../color';\nimport { Point } from '../point.class';\nimport { getRandomInt } from '../util/internals';\nimport { Canvas } from '../__types__';\nimport { BaseBrush } from './base_brush.class';\n\n/**\n * @todo remove transient\n */\nconst { Circle, Group, Shadow } = fabric;\n\nexport type CircleBrushPoint = {\n x: number;\n y: number;\n radius: number;\n fill: string;\n};\n\nexport class CircleBrush extends BaseBrush {\n /**\n * Width of a brush\n * @type Number\n * @default\n */\n width = 10;\n\n points: CircleBrushPoint[];\n\n constructor(canvas: Canvas) {\n super(canvas);\n this.points = [];\n }\n\n /**\n * Invoked inside on mouse down and mouse move\n * @param {Point} pointer\n */\n drawDot(pointer: Point) {\n const point = this.addPoint(pointer),\n ctx = this.canvas.contextTop;\n this._saveAndTransform(ctx);\n this.dot(ctx, point);\n ctx.restore();\n }\n\n dot(ctx: CanvasRenderingContext2D, point: CircleBrushPoint) {\n ctx.fillStyle = point.fill;\n ctx.beginPath();\n ctx.arc(point.x, point.y, point.radius, 0, Math.PI * 2, false);\n ctx.closePath();\n ctx.fill();\n }\n\n /**\n * Invoked on mouse down\n */\n onMouseDown(pointer: Point) {\n this.points = [];\n this.canvas.clearContext(this.canvas.contextTop);\n this._setShadow();\n this.drawDot(pointer);\n }\n\n /**\n * Render the full state of the brush\n * @private\n */\n _render() {\n const ctx = this.canvas.contextTop,\n points = this.points;\n this._saveAndTransform(ctx);\n for (let i = 0; i < points.length; i++) {\n this.dot(ctx, points[i]);\n }\n ctx.restore();\n }\n\n /**\n * Invoked on mouse move\n * @param {Point} pointer\n */\n onMouseMove(pointer: Point) {\n if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) {\n return;\n }\n if (this.needsFullRender()) {\n this.canvas.clearContext(this.canvas.contextTop);\n this.addPoint(pointer);\n this._render();\n } else {\n this.drawDot(pointer);\n }\n }\n\n /**\n * Invoked on mouse up\n */\n onMouseUp() {\n const originalRenderOnAddRemove = this.canvas.renderOnAddRemove;\n this.canvas.renderOnAddRemove = false;\n\n const circles = [];\n\n for (let i = 0; i < this.points.length; i++) {\n const point = this.points[i],\n circle = new Circle({\n radius: point.radius,\n left: point.x,\n top: point.y,\n originX: 'center',\n originY: 'center',\n fill: point.fill,\n });\n\n this.shadow && (circle.shadow = new Shadow(this.shadow));\n\n circles.push(circle);\n }\n const group = new Group(circles, { canvas: this.canvas });\n\n this.canvas.fire('before:path:created', { path: group });\n this.canvas.add(group);\n this.canvas.fire('path:created', { path: group });\n\n this.canvas.clearContext(this.canvas.contextTop);\n this._resetShadow();\n this.canvas.renderOnAddRemove = originalRenderOnAddRemove;\n this.canvas.requestRenderAll();\n }\n\n /**\n * @param {Object} pointer\n * @return {Point} Just added pointer point\n */\n addPoint({ x, y }: Point) {\n const pointerPoint: CircleBrushPoint = {\n x,\n y,\n radius: getRandomInt(Math.max(0, this.width - 20), this.width + 20) / 2,\n fill: new Color(this.color).setAlpha(getRandomInt(0, 100) / 100).toRgba(),\n };\n\n this.points.push(pointerPoint);\n\n return pointerPoint;\n }\n}\n\nfabric.CircleBrush = CircleBrush;\n","import { fabric } from '../../HEADER';\nimport { Point } from '../point.class';\nimport { TEvent, ModifierKey, PathData } from '../typedefs';\nimport { getSmoothPathFromPoints, joinPath } from '../util/path';\nimport { Canvas } from '../__types__';\nimport { BaseBrush } from './base_brush.class';\n\n/**\n * @todo remove transient\n */\nconst { Path, Shadow } = fabric;\n\n/**\n * @private\n * @param {PathData} pathData SVG path commands\n * @returns {boolean}\n */\nfunction isEmptySVGPath(pathData: PathData): boolean {\n return joinPath(pathData) === 'M 0 0 Q 0 0 0 0 L 0 0';\n}\n\nexport class PencilBrush extends BaseBrush {\n /**\n * Discard points that are less than `decimate` pixel distant from each other\n * @type Number\n * @default 0.4\n */\n decimate = 0.4;\n\n /**\n * Draws a straight line between last recorded point to current pointer\n * Used for `shift` functionality\n *\n * @type boolean\n * @default false\n */\n drawStraightLine = false;\n\n /**\n * The event modifier key that makes the brush draw a straight line.\n * If `null` or 'none' or any other string that is not a modifier key the feature is disabled.\n * @type {ModifierKey | undefined | null}\n */\n straightLineKey: ModifierKey | undefined | null = 'shiftKey';\n\n private _points: Point[];\n private _hasStraightLine: boolean;\n private oldEnd?: Point;\n\n constructor(canvas: Canvas) {\n super(canvas);\n this._points = [];\n this._hasStraightLine = false;\n }\n\n needsFullRender() {\n return super.needsFullRender() || this._hasStraightLine;\n }\n\n static drawSegment(ctx: CanvasRenderingContext2D, p1: Point, p2: Point) {\n const midPoint = p1.midPointFrom(p2);\n ctx.quadraticCurveTo(p1.x, p1.y, midPoint.x, midPoint.y);\n return midPoint;\n }\n\n /**\n * Invoked on mouse down\n * @param {Point} pointer\n */\n onMouseDown(pointer: Point, { e }: TEvent) {\n if (!this.canvas._isMainEvent(e)) {\n return;\n }\n this.drawStraightLine = !!this.straightLineKey && e[this.straightLineKey];\n this._prepareForDrawing(pointer);\n // capture coordinates immediately\n // this allows to draw dots (when movement never occurs)\n this._addPoint(pointer);\n this._render();\n }\n\n /**\n * Invoked on mouse move\n * @param {Point} pointer\n */\n onMouseMove(pointer: Point, { e }: TEvent) {\n if (!this.canvas._isMainEvent(e)) {\n return;\n }\n this.drawStraightLine = !!this.straightLineKey && e[this.straightLineKey];\n if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) {\n return;\n }\n if (this._addPoint(pointer) && this._points.length > 1) {\n if (this.needsFullRender()) {\n // redraw curve\n // clear top canvas\n this.canvas.clearContext(this.canvas.contextTop);\n this._render();\n } else {\n const points = this._points,\n length = points.length,\n ctx = this.canvas.contextTop;\n // draw the curve update\n this._saveAndTransform(ctx);\n if (this.oldEnd) {\n ctx.beginPath();\n ctx.moveTo(this.oldEnd.x, this.oldEnd.y);\n }\n this.oldEnd = PencilBrush.drawSegment(\n ctx,\n points[length - 2],\n points[length - 1]\n );\n ctx.stroke();\n ctx.restore();\n }\n }\n }\n\n /**\n * Invoked on mouse up\n */\n onMouseUp({ e }: TEvent) {\n if (!this.canvas._isMainEvent(e)) {\n return true;\n }\n this.drawStraightLine = false;\n this.oldEnd = undefined;\n this._finalizeAndAddPath();\n return false;\n }\n\n /**\n * @private\n * @param {Point} pointer Actual mouse position related to the canvas.\n */\n _prepareForDrawing(pointer: Point) {\n this._reset();\n this._addPoint(pointer);\n this.canvas.contextTop.moveTo(pointer.x, pointer.y);\n }\n\n /**\n * @private\n * @param {Point} point Point to be added to points array\n */\n _addPoint(point: Point) {\n if (\n this._points.length > 1 &&\n point.eq(this._points[this._points.length - 1])\n ) {\n return false;\n }\n if (this.drawStraightLine && this._points.length > 1) {\n this._hasStraightLine = true;\n this._points.pop();\n }\n this._points.push(point);\n return true;\n }\n\n /**\n * Clear points array and set contextTop canvas style.\n * @private\n */\n _reset() {\n this._points = [];\n this._setBrushStyles(this.canvas.contextTop);\n this._setShadow();\n this._hasStraightLine = false;\n }\n\n /**\n * Draw a smooth path on the topCanvas using quadraticCurveTo\n * @private\n * @param {CanvasRenderingContext2D} [ctx]\n */\n _render(ctx: CanvasRenderingContext2D = this.canvas.contextTop) {\n let p1 = this._points[0],\n p2 = this._points[1];\n this._saveAndTransform(ctx);\n ctx.beginPath();\n //if we only have 2 points in the path and they are the same\n //it means that the user only clicked the canvas without moving the mouse\n //then we should be drawing a dot. A path isn't drawn between two identical dots\n //that's why we set them apart a bit\n if (this._points.length === 2 && p1.x === p2.x && p1.y === p2.y) {\n const width = this.width / 1000;\n p1.x -= width;\n p2.x += width;\n }\n ctx.moveTo(p1.x, p1.y);\n\n for (let i = 1; i < this._points.length; i++) {\n // we pick the point between pi + 1 & pi + 2 as the\n // end point and p1 as our control point.\n PencilBrush.drawSegment(ctx, p1, p2);\n p1 = this._points[i];\n p2 = this._points[i + 1];\n }\n // Draw last line as a straight line while\n // we wait for the next point to be able to calculate\n // the bezier control point\n ctx.lineTo(p1.x, p1.y);\n ctx.stroke();\n ctx.restore();\n }\n\n /**\n * Converts points to SVG path\n * @param {Array} points Array of points\n * @return {PathData} SVG path commands\n */\n convertPointsToSVGPath(points: Point[]): PathData {\n const correction = this.width / 1000;\n return getSmoothPathFromPoints(points, correction);\n }\n\n /**\n * Creates a Path object to add on canvas\n * @param {PathData} pathData Path data\n * @return {Path} Path to add on canvas\n */\n createPath(pathData: PathData) {\n const path = new Path(pathData, {\n fill: null,\n stroke: this.color,\n strokeWidth: this.width,\n strokeLineCap: this.strokeLineCap,\n strokeMiterLimit: this.strokeMiterLimit,\n strokeLineJoin: this.strokeLineJoin,\n strokeDashArray: this.strokeDashArray,\n });\n if (this.shadow) {\n this.shadow.affectStroke = true;\n path.shadow = new Shadow(this.shadow);\n }\n\n return path;\n }\n\n /**\n * Decimate points array with the decimate value\n */\n decimatePoints(points: Point[], distance: number) {\n if (points.length <= 2) {\n return points;\n }\n let lastPoint = points[0],\n cDistance;\n const zoom = this.canvas.getZoom(),\n adjustedDistance = Math.pow(distance / zoom, 2),\n l = points.length - 1,\n newPoints = [lastPoint];\n for (let i = 1; i < l - 1; i++) {\n cDistance =\n Math.pow(lastPoint.x - points[i].x, 2) +\n Math.pow(lastPoint.y - points[i].y, 2);\n if (cDistance >= adjustedDistance) {\n lastPoint = points[i];\n newPoints.push(lastPoint);\n }\n }\n // Add the last point from the original line to the end of the array.\n // This ensures decimate doesn't delete the last point on the line, and ensures the line is > 1 point.\n newPoints.push(points[l]);\n return newPoints;\n }\n\n /**\n * On mouseup after drawing the path on contextTop canvas\n * we use the points captured to create an new Path object\n * and add it to the canvas.\n */\n _finalizeAndAddPath() {\n const ctx = this.canvas.contextTop;\n ctx.closePath();\n if (this.decimate) {\n this._points = this.decimatePoints(this._points, this.decimate);\n }\n const pathData = this.convertPointsToSVGPath(this._points);\n if (isEmptySVGPath(pathData)) {\n // do not create 0 width/height paths, as they are\n // rendered inconsistently across browsers\n // Firefox 4, for example, renders a dot,\n // whereas Chrome 10 renders nothing\n this.canvas.requestRenderAll();\n return;\n }\n\n const path = this.createPath(pathData);\n this.canvas.clearContext(this.canvas.contextTop);\n this.canvas.fire('before:path:created', { path: path });\n this.canvas.add(path);\n this.canvas.requestRenderAll();\n path.setCoords();\n this._resetShadow();\n\n // fire event 'path' created\n this.canvas.fire('path:created', { path: path });\n }\n}\n\nfabric.PencilBrush = PencilBrush;\n","import { fabric } from '../../HEADER';\nimport { PathData } from '../typedefs';\nimport { createCanvasElement } from '../util/misc/dom';\nimport { Canvas } from '../__types__';\nimport { PencilBrush } from './pencil_brush.class';\n\n/**\n * @todo remove transient\n */\nconst { Pattern } = fabric;\n\nexport class PatternBrush extends PencilBrush {\n source?: CanvasImageSource;\n\n constructor(canvas: Canvas) {\n super(canvas);\n }\n\n getPatternSrc() {\n const dotWidth = 20,\n dotDistance = 5,\n patternCanvas = createCanvasElement(),\n patternCtx = patternCanvas.getContext('2d');\n\n patternCanvas.width = patternCanvas.height = dotWidth + dotDistance;\n if (patternCtx) {\n patternCtx.fillStyle = this.color;\n patternCtx.beginPath();\n patternCtx.arc(\n dotWidth / 2,\n dotWidth / 2,\n dotWidth / 2,\n 0,\n Math.PI * 2,\n false\n );\n patternCtx.closePath();\n patternCtx.fill();\n }\n return patternCanvas;\n }\n\n getPatternSrcFunction() {\n return String(this.getPatternSrc).replace(\n 'this.color',\n '\"' + this.color + '\"'\n );\n }\n\n /**\n * Creates \"pattern\" instance property\n * @param {CanvasRenderingContext2D} ctx\n */\n getPattern(ctx: CanvasRenderingContext2D) {\n return ctx.createPattern(this.source || this.getPatternSrc(), 'repeat');\n }\n\n /**\n * Sets brush styles\n * @param {CanvasRenderingContext2D} ctx\n */\n _setBrushStyles(ctx: CanvasRenderingContext2D) {\n super._setBrushStyles(ctx);\n const pattern = this.getPattern(ctx);\n pattern && (ctx.strokeStyle = pattern);\n }\n\n /**\n * Creates path\n */\n createPath(pathData: PathData) {\n const path = super.createPath(pathData),\n topLeft = path._getLeftTopCoords().scalarAdd(path.strokeWidth / 2);\n\n path.stroke = new Pattern({\n source: this.source || this.getPatternSrcFunction(),\n offsetX: -topLeft.x,\n offsetY: -topLeft.y,\n });\n return path;\n }\n}\n\nfabric.PatternBrush = PatternBrush;\n","import { fabric } from '../../HEADER';\nimport { Point } from '../point.class';\nimport { getRandomInt } from '../util/internals';\nimport { Canvas, Rect } from '../__types__';\nimport { BaseBrush } from './base_brush.class';\n\n/**\n * @todo remove transient\n */\nconst { Group, Rect, Shadow } = fabric;\n\nexport type SprayBrushPoint = {\n x: number;\n y: number;\n width: number;\n opacity: number;\n};\n\n/**\n *\n * @param rects\n * @returns\n */\nfunction getUniqueRects(rects: Rect[]) {\n const uniqueRects: Record = {};\n const uniqueRectsArray: Rect[] = [];\n\n for (let i = 0, key: string; i < rects.length; i++) {\n key = `${rects[i].left}${rects[i].top}`;\n if (!uniqueRects[key]) {\n uniqueRects[key] = true;\n uniqueRectsArray.push(rects[i]);\n }\n }\n\n return uniqueRectsArray;\n}\n\nexport class SprayBrush extends BaseBrush {\n /**\n * Width of a spray\n * @type Number\n * @default\n */\n width = 10;\n\n /**\n * Density of a spray (number of dots per chunk)\n * @type Number\n * @default\n */\n density = 20;\n\n /**\n * Width of spray dots\n * @type Number\n * @default\n */\n dotWidth = 1;\n\n /**\n * Width variance of spray dots\n * @type Number\n * @default\n */\n dotWidthVariance = 1;\n\n /**\n * Whether opacity of a dot should be random\n * @type Boolean\n * @default\n */\n randomOpacity = false;\n\n /**\n * Whether overlapping dots (rectangles) should be removed (for performance reasons)\n * @type Boolean\n * @default\n */\n optimizeOverlapping = true;\n\n private sprayChunks: SprayBrushPoint[][];\n\n private sprayChunk: SprayBrushPoint[];\n\n /**\n * Constructor\n * @param {Canvas} canvas\n * @return {SprayBrush} Instance of a spray brush\n */\n constructor(canvas: Canvas) {\n super(canvas);\n this.sprayChunks = [];\n this.sprayChunk = [];\n }\n\n /**\n * Invoked on mouse down\n * @param {Point} pointer\n */\n onMouseDown(pointer: Point) {\n this.sprayChunks = [];\n this.canvas.clearContext(this.canvas.contextTop);\n this._setShadow();\n\n this.addSprayChunk(pointer);\n this.renderChunck(this.sprayChunk);\n }\n\n /**\n * Invoked on mouse move\n * @param {Point} pointer\n */\n onMouseMove(pointer: Point) {\n if (this.limitedToCanvasSize === true && this._isOutSideCanvas(pointer)) {\n return;\n }\n this.addSprayChunk(pointer);\n this.renderChunck(this.sprayChunk);\n }\n\n /**\n * Invoked on mouse up\n */\n onMouseUp() {\n const originalRenderOnAddRemove = this.canvas.renderOnAddRemove;\n this.canvas.renderOnAddRemove = false;\n\n const rects = [];\n\n for (let i = 0; i < this.sprayChunks.length; i++) {\n const sprayChunk = this.sprayChunks[i];\n for (let j = 0; j < sprayChunk.length; j++) {\n const chunck = sprayChunk[j];\n const rect = new Rect({\n width: chunck.width,\n height: chunck.width,\n left: chunck.x + 1,\n top: chunck.y + 1,\n originX: 'center',\n originY: 'center',\n fill: this.color,\n });\n rects.push(rect);\n }\n }\n\n const group = new Group(\n this.optimizeOverlapping ? getUniqueRects(rects) : rects,\n {\n objectCaching: true,\n layout: 'fixed',\n subTargetCheck: false,\n interactive: false,\n }\n );\n this.shadow && group.set('shadow', new Shadow(this.shadow));\n this.canvas.fire('before:path:created', { path: group });\n this.canvas.add(group);\n this.canvas.fire('path:created', { path: group });\n\n this.canvas.clearContext(this.canvas.contextTop);\n this._resetShadow();\n this.canvas.renderOnAddRemove = originalRenderOnAddRemove;\n this.canvas.requestRenderAll();\n }\n\n renderChunck(sprayChunck: SprayBrushPoint[]) {\n const ctx = this.canvas.contextTop;\n ctx.fillStyle = this.color;\n\n this._saveAndTransform(ctx);\n\n for (let i = 0; i < sprayChunck.length; i++) {\n const point = sprayChunck[i];\n ctx.globalAlpha = point.opacity;\n ctx.fillRect(point.x, point.y, point.width, point.width);\n }\n\n ctx.restore();\n }\n\n /**\n * Render all spray chunks\n */\n _render() {\n const ctx = this.canvas.contextTop;\n ctx.fillStyle = this.color;\n\n this._saveAndTransform(ctx);\n\n for (let i = 0; i < this.sprayChunks.length; i++) {\n this.renderChunck(this.sprayChunks[i]);\n }\n ctx.restore();\n }\n\n /**\n * @param {Point} pointer\n */\n addSprayChunk(pointer: Point) {\n this.sprayChunk = [];\n const radius = this.width / 2;\n\n for (let i = 0; i < this.density; i++) {\n this.sprayChunk.push({\n x: getRandomInt(pointer.x - radius, pointer.x + radius),\n y: getRandomInt(pointer.y - radius, pointer.y + radius),\n width: this.dotWidthVariance\n ? getRandomInt(\n // bottom clamp width to 1\n Math.max(1, this.dotWidth - this.dotWidthVariance),\n this.dotWidth + this.dotWidthVariance\n )\n : this.dotWidth,\n opacity: this.randomOpacity ? getRandomInt(0, 100) / 100 : 1,\n });\n }\n\n this.sprayChunks.push(this.sprayChunk);\n }\n}\n\nfabric.SprayBrush = 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\ No newline at end of file diff --git a/dist/fabric.min.d.ts b/dist/fabric.min.d.ts deleted file mode 100644 index caed0df74d1..00000000000 --- a/dist/fabric.min.d.ts +++ /dev/null @@ -1,2 +0,0 @@ -export {}; -//# sourceMappingURL=fabric.min.d.ts.map \ No newline at end of file diff --git a/dist/fabric.min.d.ts.map b/dist/fabric.min.d.ts.map deleted file mode 100644 index 517a339fb2b..00000000000 --- a/dist/fabric.min.d.ts.map +++ /dev/null @@ -1 +0,0 @@ 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\ No newline at end of file From efa10882631f1f548b4855cd3f5a8aed3d31aec0 Mon Sep 17 00:00:00 2001 From: Andrea Bogazzi Date: Sun, 16 Oct 2022 00:06:49 +0200 Subject: [PATCH 4/5] added changelog --- CHANGELOG.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index 96c8d97c8ee..56441078462 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,7 +1,7 @@ # Changelog ## [next] - +- test(): Added 2 tests for polygon shapes and transforms with translations [#8370](https://github.com/fabricjs/fabric.js/pull/8370) - fix(textStyles): Handle style objects with only a textBackgroundColor property in stylesToArray [#8365](https://github.com/fabricjs/fabric.js/pull/8365) - chore(): fix typos in intersection file [#8345](https://github.com/fabricjs/fabric.js/pull/8345) - fix(textStyles): Handle empty style object in stylesToArray [#8357](https://github.com/fabricjs/fabric.js/pull/8357) From 9e0088979dc58a7527caf593842cf09e569bfa9f Mon Sep 17 00:00:00 2001 From: Andrea Bogazzi Date: Sun, 16 Oct 2022 00:10:16 +0200 Subject: [PATCH 5/5] prettier --- CHANGELOG.md | 1 + 1 file changed, 1 insertion(+) diff --git a/CHANGELOG.md b/CHANGELOG.md index 56441078462..6ae4fd20c96 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,6 +1,7 @@ # Changelog ## [next] + - test(): Added 2 tests for polygon shapes and transforms with translations [#8370](https://github.com/fabricjs/fabric.js/pull/8370) - fix(textStyles): Handle style objects with only a textBackgroundColor property in stylesToArray [#8365](https://github.com/fabricjs/fabric.js/pull/8365) - chore(): fix typos in intersection file [#8345](https://github.com/fabricjs/fabric.js/pull/8345)