constants.js

// used to auto resizing etc.
export const AUTO = -1;

// Align modes for cover, contain, bit masks
export const HORIZONTAL_ALIGN_LEFT = 1;
export const HORIZONTAL_ALIGN_CENTER = 2;
export const HORIZONTAL_ALIGN_RIGHT = 4;

export const VERTICAL_ALIGN_TOP = 8;
export const VERTICAL_ALIGN_MIDDLE = 16;
export const VERTICAL_ALIGN_BOTTOM = 32;

// blend modes
export const BLEND_SOURCE_OVER = 'srcOver';
export const BLEND_DESTINATION_OVER = 'dstOver';
export const BLEND_MULTIPLY = 'multiply';
export const BLEND_ADD = 'add';
export const BLEND_SCREEN = 'screen';
export const BLEND_OVERLAY = 'overlay';
export const BLEND_DARKEN = 'darken';
export const BLEND_LIGHTEN = 'lighten';
export const BLEND_HARDLIGHT = 'hardLight';
export const BLEND_DIFFERENCE = 'difference';
export const BLEND_EXCLUSION = 'exclusion';

// Edge Handling
export const EDGE_EXTEND = 1;
export const EDGE_WRAP = 2;
export const EDGE_CROP = 3;