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canvas.class.ts
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canvas.class.ts
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//@ts-nocheck
import { Point } from './point.class';
import { FabricObject } from './shapes/object.class';
(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!
* }
* });
*
*/
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.
* <b>Backwards incompatibility note:</b> 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.
* <b>Backwards incompatibility note:</b> 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: [],
/**
* 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
FabricObject.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