mirror of
https://github.com/Hopiu/fabric.js.git
synced 2026-04-22 15:04:41 +00:00
132 lines
3.5 KiB
JavaScript
132 lines
3.5 KiB
JavaScript
/*! Fabric.js Copyright 2008-2015, Printio (Juriy Zaytsev, Maxim Chernyak) */
|
|
|
|
var fabric = fabric || { version: '2.0.0-beta2' };
|
|
if (typeof exports !== 'undefined') {
|
|
exports.fabric = fabric;
|
|
}
|
|
|
|
if (typeof document !== 'undefined' && typeof window !== 'undefined') {
|
|
fabric.document = document;
|
|
fabric.window = window;
|
|
// ensure globality even if entire library were function wrapped (as in Meteor.js packaging system)
|
|
window.fabric = fabric;
|
|
}
|
|
else {
|
|
// assume we're running under node.js when document/window are not present
|
|
fabric.document = require('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']
|
|
}
|
|
});
|
|
|
|
fabric.window = fabric.document.defaultView;
|
|
}
|
|
|
|
/**
|
|
* True when in environment that supports touch events
|
|
* @type boolean
|
|
*/
|
|
fabric.isTouchSupported = 'ontouchstart' in fabric.document.documentElement;
|
|
|
|
/**
|
|
* True when in environment that's probably Node.js
|
|
* @type boolean
|
|
*/
|
|
fabric.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-linejoin", "stroke-miterlimit",
|
|
"stroke-opacity", "stroke-width",
|
|
"id"
|
|
];
|
|
/* _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+)(?:e[-+]?\\d+)?)';
|
|
fabric.fontPaths = { };
|
|
fabric.iMatrix = [1, 0, 0, 1, 0, 0];
|
|
fabric.canvasModule = 'canvas';
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
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;
|
|
|
|
/**
|
|
* 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;
|
|
|
|
fabric.initFilterBackend = function() {
|
|
if (fabric.isWebglSupported && fabric.isWebglSupported(fabric.textureSize) && fabric.enableGLFiltering) {
|
|
console.log('max texture size: ' + fabric.maxTextureSize);
|
|
return (new fabric.WebglFilterBackend({ tileSize: fabric.textureSize }));
|
|
|
|
}
|
|
else if (fabric.Canvas2dFilterBackend) {
|
|
return (new fabric.Canvas2dFilterBackend());
|
|
}
|
|
};
|