Icard/angular-clarity-master(work.../node_modules/fabric/HEADER.js

204 lines
6.3 KiB
JavaScript

/*! Fabric.js Copyright 2008-2015, Printio (Juriy Zaytsev, Maxim Chernyak) */
var fabric = fabric || { version: '5.3.0' };
if (typeof exports !== 'undefined') {
exports.fabric = fabric;
}
/* _AMD_START_ */
else if (typeof define === 'function' && define.amd) {
define([], function() { return fabric; });
}
/* _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;
}
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'
}).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;
}
/**
* 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);
/**
* 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-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.
*/
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());
}
};