3392 lines
125 KiB
JavaScript
3392 lines
125 KiB
JavaScript
/*
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html2canvas 0.5.0-alpha1 <http://html2canvas.hertzen.com>
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Copyright (c) 2015 Niklas von Hertzen
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Released under MIT License
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*/
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(function(window, document, exports, global, define, undefined){
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/*!
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* @overview es6-promise - a tiny implementation of Promises/A+.
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* @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
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* @license Licensed under MIT license
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* See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
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* @version 2.0.1
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*/
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(function(){function r(a,b){n[l]=a;n[l+1]=b;l+=2;2===l&&A()}function s(a){return"function"===typeof a}function F(){return function(){process.nextTick(t)}}function G(){var a=0,b=new B(t),c=document.createTextNode("");b.observe(c,{characterData:!0});return function(){c.data=a=++a%2}}function H(){var a=new MessageChannel;a.port1.onmessage=t;return function(){a.port2.postMessage(0)}}function I(){return function(){setTimeout(t,1)}}function t(){for(var a=0;a<l;a+=2)(0,n[a])(n[a+1]),n[a]=void 0,n[a+1]=void 0;
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l=0}function p(){}function J(a,b,c,d){try{a.call(b,c,d)}catch(e){return e}}function K(a,b,c){r(function(a){var e=!1,f=J(c,b,function(c){e||(e=!0,b!==c?q(a,c):m(a,c))},function(b){e||(e=!0,g(a,b))});!e&&f&&(e=!0,g(a,f))},a)}function L(a,b){1===b.a?m(a,b.b):2===a.a?g(a,b.b):u(b,void 0,function(b){q(a,b)},function(b){g(a,b)})}function q(a,b){if(a===b)g(a,new TypeError("You cannot resolve a promise with itself"));else if("function"===typeof b||"object"===typeof b&&null!==b)if(b.constructor===a.constructor)L(a,
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b);else{var c;try{c=b.then}catch(d){v.error=d,c=v}c===v?g(a,v.error):void 0===c?m(a,b):s(c)?K(a,b,c):m(a,b)}else m(a,b)}function M(a){a.f&&a.f(a.b);x(a)}function m(a,b){void 0===a.a&&(a.b=b,a.a=1,0!==a.e.length&&r(x,a))}function g(a,b){void 0===a.a&&(a.a=2,a.b=b,r(M,a))}function u(a,b,c,d){var e=a.e,f=e.length;a.f=null;e[f]=b;e[f+1]=c;e[f+2]=d;0===f&&a.a&&r(x,a)}function x(a){var b=a.e,c=a.a;if(0!==b.length){for(var d,e,f=a.b,g=0;g<b.length;g+=3)d=b[g],e=b[g+c],d?C(c,d,e,f):e(f);a.e.length=0}}function D(){this.error=
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null}function C(a,b,c,d){var e=s(c),f,k,h,l;if(e){try{f=c(d)}catch(n){y.error=n,f=y}f===y?(l=!0,k=f.error,f=null):h=!0;if(b===f){g(b,new TypeError("A promises callback cannot return that same promise."));return}}else f=d,h=!0;void 0===b.a&&(e&&h?q(b,f):l?g(b,k):1===a?m(b,f):2===a&&g(b,f))}function N(a,b){try{b(function(b){q(a,b)},function(b){g(a,b)})}catch(c){g(a,c)}}function k(a,b,c,d){this.n=a;this.c=new a(p,d);this.i=c;this.o(b)?(this.m=b,this.d=this.length=b.length,this.l(),0===this.length?m(this.c,
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this.b):(this.length=this.length||0,this.k(),0===this.d&&m(this.c,this.b))):g(this.c,this.p())}function h(a){O++;this.b=this.a=void 0;this.e=[];if(p!==a){if(!s(a))throw new TypeError("You must pass a resolver function as the first argument to the promise constructor");if(!(this instanceof h))throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");N(this,a)}}var E=Array.isArray?Array.isArray:function(a){return"[object Array]"===
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Object.prototype.toString.call(a)},l=0,w="undefined"!==typeof window?window:{},B=w.MutationObserver||w.WebKitMutationObserver,w="undefined"!==typeof Uint8ClampedArray&&"undefined"!==typeof importScripts&&"undefined"!==typeof MessageChannel,n=Array(1E3),A;A="undefined"!==typeof process&&"[object process]"==={}.toString.call(process)?F():B?G():w?H():I();var v=new D,y=new D;k.prototype.o=function(a){return E(a)};k.prototype.p=function(){return Error("Array Methods must be provided an Array")};k.prototype.l=
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function(){this.b=Array(this.length)};k.prototype.k=function(){for(var a=this.length,b=this.c,c=this.m,d=0;void 0===b.a&&d<a;d++)this.j(c[d],d)};k.prototype.j=function(a,b){var c=this.n;"object"===typeof a&&null!==a?a.constructor===c&&void 0!==a.a?(a.f=null,this.g(a.a,b,a.b)):this.q(c.resolve(a),b):(this.d--,this.b[b]=this.h(a))};k.prototype.g=function(a,b,c){var d=this.c;void 0===d.a&&(this.d--,this.i&&2===a?g(d,c):this.b[b]=this.h(c));0===this.d&&m(d,this.b)};k.prototype.h=function(a){return a};
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k.prototype.q=function(a,b){var c=this;u(a,void 0,function(a){c.g(1,b,a)},function(a){c.g(2,b,a)})};var O=0;h.all=function(a,b){return(new k(this,a,!0,b)).c};h.race=function(a,b){function c(a){q(e,a)}function d(a){g(e,a)}var e=new this(p,b);if(!E(a))return (g(e,new TypeError("You must pass an array to race.")), e);for(var f=a.length,h=0;void 0===e.a&&h<f;h++)u(this.resolve(a[h]),void 0,c,d);return e};h.resolve=function(a,b){if(a&&"object"===typeof a&&a.constructor===this)return a;var c=new this(p,b);
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q(c,a);return c};h.reject=function(a,b){var c=new this(p,b);g(c,a);return c};h.prototype={constructor:h,then:function(a,b){var c=this.a;if(1===c&&!a||2===c&&!b)return this;var d=new this.constructor(p),e=this.b;if(c){var f=arguments[c-1];r(function(){C(c,d,f,e)})}else u(this,d,a,b);return d},"catch":function(a){return this.then(null,a)}};var z={Promise:h,polyfill:function(){var a;a="undefined"!==typeof global?global:"undefined"!==typeof window&&window.document?window:self;"Promise"in a&&"resolve"in
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a.Promise&&"reject"in a.Promise&&"all"in a.Promise&&"race"in a.Promise&&function(){var b;new a.Promise(function(a){b=a});return s(b)}()||(a.Promise=h)}};"function"===typeof define&&define.amd?define(function(){return z}):"undefined"!==typeof module&&module.exports?module.exports=z:"undefined"!==typeof this&&(this.ES6Promise=z);}).call(window);
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if (window) {
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window.ES6Promise.polyfill();
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}
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if (typeof(document) === "undefined" || typeof(Object.create) !== "function" || typeof(document.createElement("canvas").getContext) !== "function") {
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(window || module.exports).html2canvas = function() {
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return Promise.reject("No canvas support");
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};
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return;
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}
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/*! https://mths.be/punycode v1.3.1 by @mathias */
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;(function(root) {
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/** Detect free variables */
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var freeExports = typeof exports == 'object' && exports &&
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!exports.nodeType && exports;
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var freeModule = typeof module == 'object' && module &&
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!module.nodeType && module;
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var freeGlobal = typeof global == 'object' && global;
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if (
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freeGlobal.global === freeGlobal ||
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freeGlobal.window === freeGlobal ||
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freeGlobal.self === freeGlobal
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) {
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root = freeGlobal;
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}
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/**
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* The `punycode` object.
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* @name punycode
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* @type Object
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*/
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var punycode,
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/** Highest positive signed 32-bit float value */
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maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1
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/** Bootstring parameters */
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base = 36,
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tMin = 1,
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tMax = 26,
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skew = 38,
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damp = 700,
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initialBias = 72,
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initialN = 128, // 0x80
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delimiter = '-', // '\x2D'
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/** Regular expressions */
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regexPunycode = /^xn--/,
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regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars
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regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators
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/** Error messages */
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errors = {
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'overflow': 'Overflow: input needs wider integers to process',
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'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
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'invalid-input': 'Invalid input'
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},
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/** Convenience shortcuts */
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baseMinusTMin = base - tMin,
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floor = Math.floor,
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stringFromCharCode = String.fromCharCode,
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/** Temporary variable */
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key;
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/*--------------------------------------------------------------------------*/
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/**
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* A generic error utility function.
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* @private
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* @param {String} type The error type.
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* @returns {Error} Throws a `RangeError` with the applicable error message.
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*/
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function error(type) {
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throw RangeError(errors[type]);
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}
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/**
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* A generic `Array#map` utility function.
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* @private
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* @param {Array} array The array to iterate over.
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* @param {Function} callback The function that gets called for every array
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* item.
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* @returns {Array} A new array of values returned by the callback function.
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*/
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function map(array, fn) {
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var length = array.length;
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var result = [];
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while (length--) {
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result[length] = fn(array[length]);
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}
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return result;
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}
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/**
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* A simple `Array#map`-like wrapper to work with domain name strings or email
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* addresses.
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* @private
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* @param {String} domain The domain name or email address.
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* @param {Function} callback The function that gets called for every
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* character.
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* @returns {Array} A new string of characters returned by the callback
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* function.
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*/
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function mapDomain(string, fn) {
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var parts = string.split('@');
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var result = '';
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if (parts.length > 1) {
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// In email addresses, only the domain name should be punycoded. Leave
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// the local part (i.e. everything up to `@`) intact.
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result = parts[0] + '@';
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string = parts[1];
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}
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var labels = string.split(regexSeparators);
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var encoded = map(labels, fn).join('.');
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return result + encoded;
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}
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/**
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* Creates an array containing the numeric code points of each Unicode
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* character in the string. While JavaScript uses UCS-2 internally,
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* this function will convert a pair of surrogate halves (each of which
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* UCS-2 exposes as separate characters) into a single code point,
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* matching UTF-16.
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* @see `punycode.ucs2.encode`
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* @see <https://mathiasbynens.be/notes/javascript-encoding>
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* @memberOf punycode.ucs2
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* @name decode
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* @param {String} string The Unicode input string (UCS-2).
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* @returns {Array} The new array of code points.
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*/
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function ucs2decode(string) {
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var output = [],
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counter = 0,
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length = string.length,
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value,
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extra;
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while (counter < length) {
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value = string.charCodeAt(counter++);
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if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
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// high surrogate, and there is a next character
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extra = string.charCodeAt(counter++);
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if ((extra & 0xFC00) == 0xDC00) { // low surrogate
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output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
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} else {
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// unmatched surrogate; only append this code unit, in case the next
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// code unit is the high surrogate of a surrogate pair
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output.push(value);
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counter--;
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}
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} else {
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output.push(value);
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}
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}
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return output;
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}
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/**
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* Creates a string based on an array of numeric code points.
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* @see `punycode.ucs2.decode`
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* @memberOf punycode.ucs2
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* @name encode
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* @param {Array} codePoints The array of numeric code points.
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* @returns {String} The new Unicode string (UCS-2).
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*/
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function ucs2encode(array) {
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return map(array, function(value) {
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var output = '';
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if (value > 0xFFFF) {
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value -= 0x10000;
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output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
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value = 0xDC00 | value & 0x3FF;
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}
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output += stringFromCharCode(value);
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return output;
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}).join('');
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}
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/**
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* Converts a basic code point into a digit/integer.
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* @see `digitToBasic()`
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* @private
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* @param {Number} codePoint The basic numeric code point value.
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* @returns {Number} The numeric value of a basic code point (for use in
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* representing integers) in the range `0` to `base - 1`, or `base` if
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* the code point does not represent a value.
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*/
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function basicToDigit(codePoint) {
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if (codePoint - 48 < 10) {
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return codePoint - 22;
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}
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if (codePoint - 65 < 26) {
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return codePoint - 65;
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}
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if (codePoint - 97 < 26) {
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return codePoint - 97;
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}
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return base;
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}
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/**
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* Converts a digit/integer into a basic code point.
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* @see `basicToDigit()`
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* @private
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* @param {Number} digit The numeric value of a basic code point.
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* @returns {Number} The basic code point whose value (when used for
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* representing integers) is `digit`, which needs to be in the range
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* `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
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* used; else, the lowercase form is used. The behavior is undefined
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* if `flag` is non-zero and `digit` has no uppercase form.
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*/
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function digitToBasic(digit, flag) {
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// 0..25 map to ASCII a..z or A..Z
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// 26..35 map to ASCII 0..9
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return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);
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}
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/**
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* Bias adaptation function as per section 3.4 of RFC 3492.
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* http://tools.ietf.org/html/rfc3492#section-3.4
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* @private
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*/
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function adapt(delta, numPoints, firstTime) {
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var k = 0;
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delta = firstTime ? floor(delta / damp) : delta >> 1;
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delta += floor(delta / numPoints);
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for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {
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delta = floor(delta / baseMinusTMin);
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}
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return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));
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}
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/**
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* Converts a Punycode string of ASCII-only symbols to a string of Unicode
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* symbols.
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* @memberOf punycode
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* @param {String} input The Punycode string of ASCII-only symbols.
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* @returns {String} The resulting string of Unicode symbols.
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*/
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function decode(input) {
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// Don't use UCS-2
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var output = [],
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inputLength = input.length,
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out,
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i = 0,
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n = initialN,
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bias = initialBias,
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basic,
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j,
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index,
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oldi,
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w,
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k,
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digit,
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t,
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/** Cached calculation results */
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baseMinusT;
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// Handle the basic code points: let `basic` be the number of input code
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// points before the last delimiter, or `0` if there is none, then copy
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// the first basic code points to the output.
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basic = input.lastIndexOf(delimiter);
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if (basic < 0) {
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basic = 0;
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}
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for (j = 0; j < basic; ++j) {
|
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// if it's not a basic code point
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if (input.charCodeAt(j) >= 0x80) {
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error('not-basic');
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}
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output.push(input.charCodeAt(j));
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}
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// Main decoding loop: start just after the last delimiter if any basic code
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// points were copied; start at the beginning otherwise.
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for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {
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|
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// `index` is the index of the next character to be consumed.
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|
// Decode a generalized variable-length integer into `delta`,
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|
// which gets added to `i`. The overflow checking is easier
|
|
// if we increase `i` as we go, then subtract off its starting
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|
// value at the end to obtain `delta`.
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for (oldi = i, w = 1, k = base; /* no condition */; k += base) {
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if (index >= inputLength) {
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error('invalid-input');
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}
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digit = basicToDigit(input.charCodeAt(index++));
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if (digit >= base || digit > floor((maxInt - i) / w)) {
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error('overflow');
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}
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i += digit * w;
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t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
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if (digit < t) {
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break;
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}
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baseMinusT = base - t;
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if (w > floor(maxInt / baseMinusT)) {
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error('overflow');
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}
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w *= baseMinusT;
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}
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out = output.length + 1;
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bias = adapt(i - oldi, out, oldi == 0);
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// `i` was supposed to wrap around from `out` to `0`,
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|
// incrementing `n` each time, so we'll fix that now:
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if (floor(i / out) > maxInt - n) {
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error('overflow');
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}
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n += floor(i / out);
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i %= out;
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// Insert `n` at position `i` of the output
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output.splice(i++, 0, n);
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}
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return ucs2encode(output);
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}
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/**
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|
* Converts a string of Unicode symbols (e.g. a domain name label) to a
|
|
* Punycode string of ASCII-only symbols.
|
|
* @memberOf punycode
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* @param {String} input The string of Unicode symbols.
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* @returns {String} The resulting Punycode string of ASCII-only symbols.
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*/
|
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function encode(input) {
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var n,
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delta,
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handledCPCount,
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basicLength,
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bias,
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j,
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m,
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q,
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k,
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t,
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currentValue,
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output = [],
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/** `inputLength` will hold the number of code points in `input`. */
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inputLength,
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/** Cached calculation results */
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handledCPCountPlusOne,
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baseMinusT,
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qMinusT;
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// Convert the input in UCS-2 to Unicode
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input = ucs2decode(input);
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|
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// Cache the length
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|
inputLength = input.length;
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|
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// Initialize the state
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|
n = initialN;
|
|
delta = 0;
|
|
bias = initialBias;
|
|
|
|
// Handle the basic code points
|
|
for (j = 0; j < inputLength; ++j) {
|
|
currentValue = input[j];
|
|
if (currentValue < 0x80) {
|
|
output.push(stringFromCharCode(currentValue));
|
|
}
|
|
}
|
|
|
|
handledCPCount = basicLength = output.length;
|
|
|
|
// `handledCPCount` is the number of code points that have been handled;
|
|
// `basicLength` is the number of basic code points.
|
|
|
|
// Finish the basic string - if it is not empty - with a delimiter
|
|
if (basicLength) {
|
|
output.push(delimiter);
|
|
}
|
|
|
|
// Main encoding loop:
|
|
while (handledCPCount < inputLength) {
|
|
|
|
// All non-basic code points < n have been handled already. Find the next
|
|
// larger one:
|
|
for (m = maxInt, j = 0; j < inputLength; ++j) {
|
|
currentValue = input[j];
|
|
if (currentValue >= n && currentValue < m) {
|
|
m = currentValue;
|
|
}
|
|
}
|
|
|
|
// Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,
|
|
// but guard against overflow
|
|
handledCPCountPlusOne = handledCPCount + 1;
|
|
if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
|
|
error('overflow');
|
|
}
|
|
|
|
delta += (m - n) * handledCPCountPlusOne;
|
|
n = m;
|
|
|
|
for (j = 0; j < inputLength; ++j) {
|
|
currentValue = input[j];
|
|
|
|
if (currentValue < n && ++delta > maxInt) {
|
|
error('overflow');
|
|
}
|
|
|
|
if (currentValue == n) {
|
|
// Represent delta as a generalized variable-length integer
|
|
for (q = delta, k = base; /* no condition */; k += base) {
|
|
t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
|
|
if (q < t) {
|
|
break;
|
|
}
|
|
qMinusT = q - t;
|
|
baseMinusT = base - t;
|
|
output.push(
|
|
stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))
|
|
);
|
|
q = floor(qMinusT / baseMinusT);
|
|
}
|
|
|
|
output.push(stringFromCharCode(digitToBasic(q, 0)));
|
|
bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
|
|
delta = 0;
|
|
++handledCPCount;
|
|
}
|
|
}
|
|
|
|
++delta;
|
|
++n;
|
|
|
|
}
|
|
return output.join('');
|
|
}
|
|
|
|
/**
|
|
* Converts a Punycode string representing a domain name or an email address
|
|
* to Unicode. Only the Punycoded parts of the input will be converted, i.e.
|
|
* it doesn't matter if you call it on a string that has already been
|
|
* converted to Unicode.
|
|
* @memberOf punycode
|
|
* @param {String} input The Punycoded domain name or email address to
|
|
* convert to Unicode.
|
|
* @returns {String} The Unicode representation of the given Punycode
|
|
* string.
|
|
*/
|
|
function toUnicode(input) {
|
|
return mapDomain(input, function(string) {
|
|
return regexPunycode.test(string)
|
|
? decode(string.slice(4).toLowerCase())
|
|
: string;
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Converts a Unicode string representing a domain name or an email address to
|
|
* Punycode. Only the non-ASCII parts of the domain name will be converted,
|
|
* i.e. it doesn't matter if you call it with a domain that's already in
|
|
* ASCII.
|
|
* @memberOf punycode
|
|
* @param {String} input The domain name or email address to convert, as a
|
|
* Unicode string.
|
|
* @returns {String} The Punycode representation of the given domain name or
|
|
* email address.
|
|
*/
|
|
function toASCII(input) {
|
|
return mapDomain(input, function(string) {
|
|
return regexNonASCII.test(string)
|
|
? 'xn--' + encode(string)
|
|
: string;
|
|
});
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
/** Define the public API */
|
|
punycode = {
|
|
/**
|
|
* A string representing the current Punycode.js version number.
|
|
* @memberOf punycode
|
|
* @type String
|
|
*/
|
|
'version': '1.3.1',
|
|
/**
|
|
* An object of methods to convert from JavaScript's internal character
|
|
* representation (UCS-2) to Unicode code points, and back.
|
|
* @see <https://mathiasbynens.be/notes/javascript-encoding>
|
|
* @memberOf punycode
|
|
* @type Object
|
|
*/
|
|
'ucs2': {
|
|
'decode': ucs2decode,
|
|
'encode': ucs2encode
|
|
},
|
|
'decode': decode,
|
|
'encode': encode,
|
|
'toASCII': toASCII,
|
|
'toUnicode': toUnicode
|
|
};
|
|
|
|
/** Expose `punycode` */
|
|
// Some AMD build optimizers, like r.js, check for specific condition patterns
|
|
// like the following:
|
|
if (
|
|
typeof define == 'function' &&
|
|
typeof define.amd == 'object' &&
|
|
define.amd
|
|
) {
|
|
define('punycode', function() {
|
|
return punycode;
|
|
});
|
|
} else if (freeExports && freeModule) {
|
|
if (module.exports == freeExports) { // in Node.js or RingoJS v0.8.0+
|
|
freeModule.exports = punycode;
|
|
} else { // in Narwhal or RingoJS v0.7.0-
|
|
for (key in punycode) {
|
|
punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
|
|
}
|
|
}
|
|
} else { // in Rhino or a web browser
|
|
root.punycode = punycode;
|
|
}
|
|
|
|
}(this));
|
|
|
|
var html2canvasNodeAttribute = "data-html2canvas-node";
|
|
var html2canvasCanvasCloneAttribute = "data-html2canvas-canvas-clone";
|
|
var html2canvasCanvasCloneIndex = 0;
|
|
var html2canvasCloneIndex = 0;
|
|
|
|
window.html2canvas = function(nodeList, options) {
|
|
var index = html2canvasCloneIndex++;
|
|
options = options || {};
|
|
if (options.logging) {
|
|
window.html2canvas.logging = true;
|
|
window.html2canvas.start = Date.now();
|
|
}
|
|
|
|
options.async = typeof(options.async) === "undefined" ? true : options.async;
|
|
options.allowTaint = typeof(options.allowTaint) === "undefined" ? false : options.allowTaint;
|
|
options.removeContainer = typeof(options.removeContainer) === "undefined" ? true : options.removeContainer;
|
|
options.javascriptEnabled = typeof(options.javascriptEnabled) === "undefined" ? false : options.javascriptEnabled;
|
|
options.imageTimeout = typeof(options.imageTimeout) === "undefined" ? 10000 : options.imageTimeout;
|
|
options.renderer = typeof(options.renderer) === "function" ? options.renderer : CanvasRenderer;
|
|
options.strict = !!options.strict;
|
|
|
|
if (typeof(nodeList) === "string") {
|
|
if (typeof(options.proxy) !== "string") {
|
|
return Promise.reject("Proxy must be used when rendering url");
|
|
}
|
|
var width = options.width != null ? options.width : window.innerWidth;
|
|
var height = options.height != null ? options.height : window.innerHeight;
|
|
return loadUrlDocument(absoluteUrl(nodeList), options.proxy, document, width, height, options).then(function(container) {
|
|
return renderWindow(container.contentWindow.document.documentElement, container, options, width, height);
|
|
});
|
|
}
|
|
|
|
var node = ((nodeList === undefined) ? [document.documentElement] : ((nodeList.length) ? nodeList : [nodeList]))[0];
|
|
node.setAttribute(html2canvasNodeAttribute + index, index);
|
|
return renderDocument(node.ownerDocument, options, node.ownerDocument.defaultView.innerWidth, node.ownerDocument.defaultView.innerHeight, index).then(function(canvas) {
|
|
if (typeof(options.onrendered) === "function") {
|
|
log("options.onrendered is deprecated, html2canvas returns a Promise containing the canvas");
|
|
options.onrendered(canvas);
|
|
}
|
|
return canvas;
|
|
});
|
|
};
|
|
|
|
window.html2canvas.punycode = this.punycode;
|
|
window.html2canvas.proxy = {};
|
|
|
|
function renderDocument(document, options, windowWidth, windowHeight, html2canvasIndex) {
|
|
return createWindowClone(document, document, windowWidth, windowHeight, options, document.defaultView.pageXOffset, document.defaultView.pageYOffset).then(function(container) {
|
|
log("Document cloned");
|
|
var attributeName = html2canvasNodeAttribute + html2canvasIndex;
|
|
var selector = "[" + attributeName + "='" + html2canvasIndex + "']";
|
|
document.querySelector(selector).removeAttribute(attributeName);
|
|
var clonedWindow = container.contentWindow;
|
|
var node = clonedWindow.document.querySelector(selector);
|
|
var oncloneHandler = (typeof(options.onclone) === "function") ? Promise.resolve(options.onclone(clonedWindow.document)) : Promise.resolve(true);
|
|
return oncloneHandler.then(function() {
|
|
return renderWindow(node, container, options, windowWidth, windowHeight);
|
|
});
|
|
});
|
|
}
|
|
|
|
function renderWindow(node, container, options, windowWidth, windowHeight) {
|
|
var clonedWindow = container.contentWindow;
|
|
var support = new Support(clonedWindow.document);
|
|
var imageLoader = new ImageLoader(options, support);
|
|
var bounds = getBounds(node);
|
|
var width = options.type === "view" ? windowWidth : documentWidth(clonedWindow.document);
|
|
var height = options.type === "view" ? windowHeight : documentHeight(clonedWindow.document);
|
|
var renderer = new options.renderer(width, height, imageLoader, options, document);
|
|
var parser = new NodeParser(node, renderer, support, imageLoader, options);
|
|
return parser.ready.then(function() {
|
|
log("Finished rendering");
|
|
var canvas;
|
|
|
|
if (options.type === "view") {
|
|
canvas = crop(renderer.canvas, {width: renderer.canvas.width, height: renderer.canvas.height, top: 0, left: 0, x: 0, y: 0});
|
|
} else if (node === clonedWindow.document.body || node === clonedWindow.document.documentElement || options.canvas != null) {
|
|
canvas = renderer.canvas;
|
|
} else {
|
|
canvas = crop(renderer.canvas, {width: options.width != null ? options.width : bounds.width, height: options.height != null ? options.height : bounds.height, top: bounds.top, left: bounds.left, x: clonedWindow.pageXOffset, y: clonedWindow.pageYOffset});
|
|
}
|
|
|
|
cleanupContainer(container, options);
|
|
return canvas;
|
|
});
|
|
}
|
|
|
|
function cleanupContainer(container, options) {
|
|
if (options.removeContainer) {
|
|
container.parentNode.removeChild(container);
|
|
log("Cleaned up container");
|
|
}
|
|
}
|
|
|
|
function crop(canvas, bounds) {
|
|
var croppedCanvas = document.createElement("canvas");
|
|
var x1 = Math.min(canvas.width - 1, Math.max(0, bounds.left));
|
|
var x2 = Math.min(canvas.width, Math.max(1, bounds.left + bounds.width));
|
|
var y1 = Math.min(canvas.height - 1, Math.max(0, bounds.top));
|
|
var y2 = Math.min(canvas.height, Math.max(1, bounds.top + bounds.height));
|
|
croppedCanvas.width = bounds.width;
|
|
croppedCanvas.height = bounds.height;
|
|
log("Cropping canvas at:", "left:", bounds.left, "top:", bounds.top, "width:", (x2-x1), "height:", (y2-y1));
|
|
log("Resulting crop with width", bounds.width, "and height", bounds.height, " with x", x1, "and y", y1);
|
|
croppedCanvas.getContext("2d").drawImage(canvas, x1, y1, x2-x1, y2-y1, bounds.x, bounds.y, x2-x1, y2-y1);
|
|
return croppedCanvas;
|
|
}
|
|
|
|
function documentWidth (doc) {
|
|
return Math.max(
|
|
Math.max(doc.body.scrollWidth, doc.documentElement.scrollWidth),
|
|
Math.max(doc.body.offsetWidth, doc.documentElement.offsetWidth),
|
|
Math.max(doc.body.clientWidth, doc.documentElement.clientWidth)
|
|
);
|
|
}
|
|
|
|
function documentHeight (doc) {
|
|
return Math.max(
|
|
Math.max(doc.body.scrollHeight, doc.documentElement.scrollHeight),
|
|
Math.max(doc.body.offsetHeight, doc.documentElement.offsetHeight),
|
|
Math.max(doc.body.clientHeight, doc.documentElement.clientHeight)
|
|
);
|
|
}
|
|
|
|
function smallImage() {
|
|
return "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7";
|
|
}
|
|
|
|
function isIE9() {
|
|
return document.documentMode && document.documentMode <= 9;
|
|
}
|
|
|
|
// https://github.com/niklasvh/html2canvas/issues/503
|
|
function cloneNodeIE9(node, javascriptEnabled) {
|
|
var clone = node.nodeType === 3 ? document.createTextNode(node.nodeValue) : node.cloneNode(false);
|
|
|
|
var child = node.firstChild;
|
|
while(child) {
|
|
if (javascriptEnabled === true || child.nodeType !== 1 || child.nodeName !== 'SCRIPT') {
|
|
clone.appendChild(cloneNodeIE9(child, javascriptEnabled));
|
|
}
|
|
child = child.nextSibling;
|
|
}
|
|
|
|
return clone;
|
|
}
|
|
|
|
function createWindowClone(ownerDocument, containerDocument, width, height, options, x ,y) {
|
|
labelCanvasElements(ownerDocument);
|
|
var documentElement = isIE9() ? cloneNodeIE9(ownerDocument.documentElement, options.javascriptEnabled) : ownerDocument.documentElement.cloneNode(true);
|
|
var container = containerDocument.createElement("iframe");
|
|
|
|
container.className = "html2canvas-container";
|
|
container.style.visibility = "hidden";
|
|
container.style.position = "fixed";
|
|
container.style.left = "-10000px";
|
|
container.style.top = "0px";
|
|
container.style.border = "0";
|
|
container.width = width;
|
|
container.height = height;
|
|
container.scrolling = "no"; // ios won't scroll without it
|
|
containerDocument.body.appendChild(container);
|
|
|
|
|
|
return new Promise(function(resolve) {
|
|
var documentClone = container.contentWindow.document;
|
|
|
|
cloneNodeValues(ownerDocument.documentElement, documentElement, "textarea");
|
|
cloneNodeValues(ownerDocument.documentElement, documentElement, "select");
|
|
|
|
/* Chrome doesn't detect relative background-images assigned in inline <style> sheets when fetched through getComputedStyle
|
|
if window url is about:blank, we can assign the url to current by writing onto the document
|
|
*/
|
|
container.contentWindow.onload = container.onload = function() {
|
|
var interval = setInterval(function() {
|
|
if (documentClone.body.childNodes.length > 0) {
|
|
cloneCanvasContents(ownerDocument, documentClone);
|
|
clearInterval(interval);
|
|
if (options.type === "view") {
|
|
container.contentWindow.scrollTo(x, y);
|
|
}
|
|
resolve(container);
|
|
}
|
|
}, 50);
|
|
};
|
|
|
|
documentClone.open();
|
|
documentClone.write("<!DOCTYPE html><html></html>");
|
|
// Chrome scrolls the parent document for some reason after the write to the cloned window???
|
|
restoreOwnerScroll(ownerDocument, x, y);
|
|
documentClone.replaceChild(options.javascriptEnabled === true ? documentClone.adoptNode(documentElement) : removeScriptNodes(documentClone.adoptNode(documentElement)), documentClone.documentElement);
|
|
documentClone.close();
|
|
});
|
|
}
|
|
|
|
function cloneNodeValues(document, clone, nodeName) {
|
|
var originalNodes = document.getElementsByTagName(nodeName);
|
|
var clonedNodes = clone.getElementsByTagName(nodeName);
|
|
var count = originalNodes.length;
|
|
for (var i = 0; i < count; i++) {
|
|
clonedNodes[i].value = originalNodes[i].value;
|
|
}
|
|
}
|
|
|
|
function restoreOwnerScroll(ownerDocument, x, y) {
|
|
if (ownerDocument.defaultView && (x !== ownerDocument.defaultView.pageXOffset || y !== ownerDocument.defaultView.pageYOffset)) {
|
|
ownerDocument.defaultView.scrollTo(x, y);
|
|
}
|
|
}
|
|
|
|
function loadUrlDocument(src, proxy, document, width, height, options) {
|
|
return new Proxy(src, proxy, window.document).then(documentFromHTML(src)).then(function(doc) {
|
|
return createWindowClone(doc, document, width, height, options, 0, 0);
|
|
});
|
|
}
|
|
|
|
function documentFromHTML(src) {
|
|
return function(html) {
|
|
var parser = new DOMParser(), doc;
|
|
try {
|
|
doc = parser.parseFromString(html, "text/html");
|
|
} catch(e) {
|
|
log("DOMParser not supported, falling back to createHTMLDocument");
|
|
doc = document.implementation.createHTMLDocument("");
|
|
try {
|
|
doc.open();
|
|
doc.write(html);
|
|
doc.close();
|
|
} catch(ee) {
|
|
log("createHTMLDocument write not supported, falling back to document.body.innerHTML");
|
|
doc.body.innerHTML = html; // ie9 doesnt support writing to documentElement
|
|
}
|
|
}
|
|
|
|
var b = doc.querySelector("base");
|
|
if (!b || !b.href.host) {
|
|
var base = doc.createElement("base");
|
|
base.href = src;
|
|
doc.head.insertBefore(base, doc.head.firstChild);
|
|
}
|
|
|
|
return doc;
|
|
};
|
|
}
|
|
|
|
|
|
function labelCanvasElements(ownerDocument) {
|
|
[].slice.call(ownerDocument.querySelectorAll("canvas"), 0).forEach(function(canvas) {
|
|
canvas.setAttribute(html2canvasCanvasCloneAttribute, "canvas-" + html2canvasCanvasCloneIndex++);
|
|
});
|
|
}
|
|
|
|
function cloneCanvasContents(ownerDocument, documentClone) {
|
|
[].slice.call(ownerDocument.querySelectorAll("[" + html2canvasCanvasCloneAttribute + "]"), 0).forEach(function(canvas) {
|
|
try {
|
|
var clonedCanvas = documentClone.querySelector('[' + html2canvasCanvasCloneAttribute + '="' + canvas.getAttribute(html2canvasCanvasCloneAttribute) + '"]');
|
|
if (clonedCanvas) {
|
|
clonedCanvas.width = canvas.width;
|
|
clonedCanvas.height = canvas.height;
|
|
clonedCanvas.getContext("2d").putImageData(canvas.getContext("2d").getImageData(0, 0, canvas.width, canvas.height), 0, 0);
|
|
}
|
|
} catch(e) {
|
|
log("Unable to copy canvas content from", canvas, e);
|
|
}
|
|
canvas.removeAttribute(html2canvasCanvasCloneAttribute);
|
|
});
|
|
}
|
|
|
|
function removeScriptNodes(parent) {
|
|
[].slice.call(parent.childNodes, 0).filter(isElementNode).forEach(function(node) {
|
|
if (node.tagName === "SCRIPT") {
|
|
parent.removeChild(node);
|
|
} else {
|
|
removeScriptNodes(node);
|
|
}
|
|
});
|
|
return parent;
|
|
}
|
|
|
|
function isElementNode(node) {
|
|
return node.nodeType === Node.ELEMENT_NODE;
|
|
}
|
|
|
|
function absoluteUrl(url) {
|
|
var link = document.createElement("a");
|
|
link.href = url;
|
|
link.href = link.href;
|
|
return link;
|
|
}
|
|
|
|
// http://dev.w3.org/csswg/css-color/
|
|
|
|
function Color(value) {
|
|
this.r = 0;
|
|
this.g = 0;
|
|
this.b = 0;
|
|
this.a = null;
|
|
var result = this.fromArray(value) ||
|
|
this.namedColor(value) ||
|
|
this.rgb(value) ||
|
|
this.rgba(value) ||
|
|
this.hex6(value) ||
|
|
this.hex3(value);
|
|
}
|
|
|
|
Color.prototype.darken = function(amount) {
|
|
var a = 1 - amount;
|
|
return new Color([
|
|
Math.round(this.r * a),
|
|
Math.round(this.g * a),
|
|
Math.round(this.b * a),
|
|
this.a
|
|
]);
|
|
};
|
|
|
|
Color.prototype.isTransparent = function() {
|
|
return this.a === 0;
|
|
};
|
|
|
|
Color.prototype.isBlack = function() {
|
|
return this.r === 0 && this.g === 0 && this.b === 0;
|
|
};
|
|
|
|
Color.prototype.fromArray = function(array) {
|
|
if (Array.isArray(array)) {
|
|
this.r = Math.min(array[0], 255);
|
|
this.g = Math.min(array[1], 255);
|
|
this.b = Math.min(array[2], 255);
|
|
if (array.length > 3) {
|
|
this.a = array[3];
|
|
}
|
|
}
|
|
|
|
return (Array.isArray(array));
|
|
};
|
|
|
|
var _hex3 = /^#([a-f0-9]{3})$/i;
|
|
|
|
Color.prototype.hex3 = function(value) {
|
|
var match = null;
|
|
if ((match = value.match(_hex3)) !== null) {
|
|
this.r = parseInt(match[1][0] + match[1][0], 16);
|
|
this.g = parseInt(match[1][1] + match[1][1], 16);
|
|
this.b = parseInt(match[1][2] + match[1][2], 16);
|
|
}
|
|
return match !== null;
|
|
};
|
|
|
|
var _hex6 = /^#([a-f0-9]{6})$/i;
|
|
|
|
Color.prototype.hex6 = function(value) {
|
|
var match = null;
|
|
if ((match = value.match(_hex6)) !== null) {
|
|
this.r = parseInt(match[1].substring(0, 2), 16);
|
|
this.g = parseInt(match[1].substring(2, 4), 16);
|
|
this.b = parseInt(match[1].substring(4, 6), 16);
|
|
}
|
|
return match !== null;
|
|
};
|
|
|
|
|
|
var _rgb = /^rgb\((\d{1,3}) *, *(\d{1,3}) *, *(\d{1,3})\)$/;
|
|
|
|
Color.prototype.rgb = function(value) {
|
|
var match = null;
|
|
if ((match = value.match(_rgb)) !== null) {
|
|
this.r = Number(match[1]);
|
|
this.g = Number(match[2]);
|
|
this.b = Number(match[3]);
|
|
}
|
|
return match !== null;
|
|
};
|
|
|
|
var _rgba = /^rgba\((\d{1,3}) *, *(\d{1,3}) *, *(\d{1,3}) *, *(\d+\.?\d*)\)$/;
|
|
|
|
Color.prototype.rgba = function(value) {
|
|
var match = null;
|
|
if ((match = value.match(_rgba)) !== null) {
|
|
this.r = Number(match[1]);
|
|
this.g = Number(match[2]);
|
|
this.b = Number(match[3]);
|
|
this.a = Number(match[4]);
|
|
}
|
|
return match !== null;
|
|
};
|
|
|
|
Color.prototype.toString = function() {
|
|
return this.a !== null && this.a !== 1 ?
|
|
"rgba(" + [this.r, this.g, this.b, this.a].join(",") + ")" :
|
|
"rgb(" + [this.r, this.g, this.b].join(",") + ")";
|
|
};
|
|
|
|
Color.prototype.namedColor = function(value) {
|
|
var color = colors[value.toLowerCase()];
|
|
if (color) {
|
|
this.r = color[0];
|
|
this.g = color[1];
|
|
this.b = color[2];
|
|
} else if (value.toLowerCase() === "transparent") {
|
|
this.r = this.g = this.b = this.a = 0;
|
|
return true;
|
|
}
|
|
|
|
return !!color;
|
|
};
|
|
|
|
Color.prototype.isColor = true;
|
|
|
|
// JSON.stringify([].slice.call($$('.named-color-table tr'), 1).map(function(row) { return [row.childNodes[3].textContent, row.childNodes[5].textContent.trim().split(",").map(Number)] }).reduce(function(data, row) {data[row[0]] = row[1]; return data}, {}))
|
|
var colors = {
|
|
"aliceblue": [240, 248, 255],
|
|
"antiquewhite": [250, 235, 215],
|
|
"aqua": [0, 255, 255],
|
|
"aquamarine": [127, 255, 212],
|
|
"azure": [240, 255, 255],
|
|
"beige": [245, 245, 220],
|
|
"bisque": [255, 228, 196],
|
|
"black": [0, 0, 0],
|
|
"blanchedalmond": [255, 235, 205],
|
|
"blue": [0, 0, 255],
|
|
"blueviolet": [138, 43, 226],
|
|
"brown": [165, 42, 42],
|
|
"burlywood": [222, 184, 135],
|
|
"cadetblue": [95, 158, 160],
|
|
"chartreuse": [127, 255, 0],
|
|
"chocolate": [210, 105, 30],
|
|
"coral": [255, 127, 80],
|
|
"cornflowerblue": [100, 149, 237],
|
|
"cornsilk": [255, 248, 220],
|
|
"crimson": [220, 20, 60],
|
|
"cyan": [0, 255, 255],
|
|
"darkblue": [0, 0, 139],
|
|
"darkcyan": [0, 139, 139],
|
|
"darkgoldenrod": [184, 134, 11],
|
|
"darkgray": [169, 169, 169],
|
|
"darkgreen": [0, 100, 0],
|
|
"darkgrey": [169, 169, 169],
|
|
"darkkhaki": [189, 183, 107],
|
|
"darkmagenta": [139, 0, 139],
|
|
"darkolivegreen": [85, 107, 47],
|
|
"darkorange": [255, 140, 0],
|
|
"darkorchid": [153, 50, 204],
|
|
"darkred": [139, 0, 0],
|
|
"darksalmon": [233, 150, 122],
|
|
"darkseagreen": [143, 188, 143],
|
|
"darkslateblue": [72, 61, 139],
|
|
"darkslategray": [47, 79, 79],
|
|
"darkslategrey": [47, 79, 79],
|
|
"darkturquoise": [0, 206, 209],
|
|
"darkviolet": [148, 0, 211],
|
|
"deeppink": [255, 20, 147],
|
|
"deepskyblue": [0, 191, 255],
|
|
"dimgray": [105, 105, 105],
|
|
"dimgrey": [105, 105, 105],
|
|
"dodgerblue": [30, 144, 255],
|
|
"firebrick": [178, 34, 34],
|
|
"floralwhite": [255, 250, 240],
|
|
"forestgreen": [34, 139, 34],
|
|
"fuchsia": [255, 0, 255],
|
|
"gainsboro": [220, 220, 220],
|
|
"ghostwhite": [248, 248, 255],
|
|
"gold": [255, 215, 0],
|
|
"goldenrod": [218, 165, 32],
|
|
"gray": [128, 128, 128],
|
|
"green": [0, 128, 0],
|
|
"greenyellow": [173, 255, 47],
|
|
"grey": [128, 128, 128],
|
|
"honeydew": [240, 255, 240],
|
|
"hotpink": [255, 105, 180],
|
|
"indianred": [205, 92, 92],
|
|
"indigo": [75, 0, 130],
|
|
"ivory": [255, 255, 240],
|
|
"khaki": [240, 230, 140],
|
|
"lavender": [230, 230, 250],
|
|
"lavenderblush": [255, 240, 245],
|
|
"lawngreen": [124, 252, 0],
|
|
"lemonchiffon": [255, 250, 205],
|
|
"lightblue": [173, 216, 230],
|
|
"lightcoral": [240, 128, 128],
|
|
"lightcyan": [224, 255, 255],
|
|
"lightgoldenrodyellow": [250, 250, 210],
|
|
"lightgray": [211, 211, 211],
|
|
"lightgreen": [144, 238, 144],
|
|
"lightgrey": [211, 211, 211],
|
|
"lightpink": [255, 182, 193],
|
|
"lightsalmon": [255, 160, 122],
|
|
"lightseagreen": [32, 178, 170],
|
|
"lightskyblue": [135, 206, 250],
|
|
"lightslategray": [119, 136, 153],
|
|
"lightslategrey": [119, 136, 153],
|
|
"lightsteelblue": [176, 196, 222],
|
|
"lightyellow": [255, 255, 224],
|
|
"lime": [0, 255, 0],
|
|
"limegreen": [50, 205, 50],
|
|
"linen": [250, 240, 230],
|
|
"magenta": [255, 0, 255],
|
|
"maroon": [128, 0, 0],
|
|
"mediumaquamarine": [102, 205, 170],
|
|
"mediumblue": [0, 0, 205],
|
|
"mediumorchid": [186, 85, 211],
|
|
"mediumpurple": [147, 112, 219],
|
|
"mediumseagreen": [60, 179, 113],
|
|
"mediumslateblue": [123, 104, 238],
|
|
"mediumspringgreen": [0, 250, 154],
|
|
"mediumturquoise": [72, 209, 204],
|
|
"mediumvioletred": [199, 21, 133],
|
|
"midnightblue": [25, 25, 112],
|
|
"mintcream": [245, 255, 250],
|
|
"mistyrose": [255, 228, 225],
|
|
"moccasin": [255, 228, 181],
|
|
"navajowhite": [255, 222, 173],
|
|
"navy": [0, 0, 128],
|
|
"oldlace": [253, 245, 230],
|
|
"olive": [128, 128, 0],
|
|
"olivedrab": [107, 142, 35],
|
|
"orange": [255, 165, 0],
|
|
"orangered": [255, 69, 0],
|
|
"orchid": [218, 112, 214],
|
|
"palegoldenrod": [238, 232, 170],
|
|
"palegreen": [152, 251, 152],
|
|
"paleturquoise": [175, 238, 238],
|
|
"palevioletred": [219, 112, 147],
|
|
"papayawhip": [255, 239, 213],
|
|
"peachpuff": [255, 218, 185],
|
|
"peru": [205, 133, 63],
|
|
"pink": [255, 192, 203],
|
|
"plum": [221, 160, 221],
|
|
"powderblue": [176, 224, 230],
|
|
"purple": [128, 0, 128],
|
|
"rebeccapurple": [102, 51, 153],
|
|
"red": [255, 0, 0],
|
|
"rosybrown": [188, 143, 143],
|
|
"royalblue": [65, 105, 225],
|
|
"saddlebrown": [139, 69, 19],
|
|
"salmon": [250, 128, 114],
|
|
"sandybrown": [244, 164, 96],
|
|
"seagreen": [46, 139, 87],
|
|
"seashell": [255, 245, 238],
|
|
"sienna": [160, 82, 45],
|
|
"silver": [192, 192, 192],
|
|
"skyblue": [135, 206, 235],
|
|
"slateblue": [106, 90, 205],
|
|
"slategray": [112, 128, 144],
|
|
"slategrey": [112, 128, 144],
|
|
"snow": [255, 250, 250],
|
|
"springgreen": [0, 255, 127],
|
|
"steelblue": [70, 130, 180],
|
|
"tan": [210, 180, 140],
|
|
"teal": [0, 128, 128],
|
|
"thistle": [216, 191, 216],
|
|
"tomato": [255, 99, 71],
|
|
"turquoise": [64, 224, 208],
|
|
"violet": [238, 130, 238],
|
|
"wheat": [245, 222, 179],
|
|
"white": [255, 255, 255],
|
|
"whitesmoke": [245, 245, 245],
|
|
"yellow": [255, 255, 0],
|
|
"yellowgreen": [154, 205, 50]
|
|
};
|
|
|
|
|
|
function DummyImageContainer(src) {
|
|
this.src = src;
|
|
log("DummyImageContainer for", src);
|
|
if (!this.promise || !this.image) {
|
|
log("Initiating DummyImageContainer");
|
|
DummyImageContainer.prototype.image = new Image();
|
|
var image = this.image;
|
|
DummyImageContainer.prototype.promise = new Promise(function(resolve, reject) {
|
|
image.onload = resolve;
|
|
image.onerror = reject;
|
|
image.src = smallImage();
|
|
if (image.complete === true) {
|
|
resolve(image);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
function Font(family, size) {
|
|
var container = document.createElement('div'),
|
|
img = document.createElement('img'),
|
|
span = document.createElement('span'),
|
|
sampleText = 'Hidden Text',
|
|
baseline,
|
|
middle;
|
|
|
|
container.style.visibility = "hidden";
|
|
container.style.fontFamily = family;
|
|
container.style.fontSize = size;
|
|
container.style.margin = 0;
|
|
container.style.padding = 0;
|
|
|
|
document.body.appendChild(container);
|
|
|
|
img.src = smallImage();
|
|
img.width = 1;
|
|
img.height = 1;
|
|
|
|
img.style.margin = 0;
|
|
img.style.padding = 0;
|
|
img.style.verticalAlign = "baseline";
|
|
|
|
span.style.fontFamily = family;
|
|
span.style.fontSize = size;
|
|
span.style.margin = 0;
|
|
span.style.padding = 0;
|
|
|
|
span.appendChild(document.createTextNode(sampleText));
|
|
container.appendChild(span);
|
|
container.appendChild(img);
|
|
baseline = (img.offsetTop - span.offsetTop) + 1;
|
|
|
|
container.removeChild(span);
|
|
container.appendChild(document.createTextNode(sampleText));
|
|
|
|
container.style.lineHeight = "normal";
|
|
img.style.verticalAlign = "super";
|
|
|
|
middle = (img.offsetTop-container.offsetTop) + 1;
|
|
|
|
document.body.removeChild(container);
|
|
|
|
this.baseline = baseline;
|
|
this.lineWidth = 1;
|
|
this.middle = middle;
|
|
}
|
|
|
|
function FontMetrics() {
|
|
this.data = {};
|
|
}
|
|
|
|
FontMetrics.prototype.getMetrics = function(family, size) {
|
|
if (this.data[family + "-" + size] === undefined) {
|
|
this.data[family + "-" + size] = new Font(family, size);
|
|
}
|
|
return this.data[family + "-" + size];
|
|
};
|
|
|
|
function FrameContainer(container, sameOrigin, options) {
|
|
this.image = null;
|
|
this.src = container;
|
|
var self = this;
|
|
var bounds = getBounds(container);
|
|
this.promise = (!sameOrigin ? this.proxyLoad(options.proxy, bounds, options) : new Promise(function(resolve) {
|
|
if (container.contentWindow.document.URL === "about:blank" || container.contentWindow.document.documentElement == null) {
|
|
container.contentWindow.onload = container.onload = function() {
|
|
resolve(container);
|
|
};
|
|
} else {
|
|
resolve(container);
|
|
}
|
|
})).then(function(container) {
|
|
return html2canvas(container.contentWindow.document.documentElement, {type: 'view', width: container.width, height: container.height, proxy: options.proxy, javascriptEnabled: options.javascriptEnabled, removeContainer: options.removeContainer, allowTaint: options.allowTaint, imageTimeout: options.imageTimeout / 2});
|
|
}).then(function(canvas) {
|
|
return self.image = canvas;
|
|
});
|
|
}
|
|
|
|
FrameContainer.prototype.proxyLoad = function(proxy, bounds, options) {
|
|
var container = this.src;
|
|
return loadUrlDocument(container.src, proxy, container.ownerDocument, bounds.width, bounds.height, options);
|
|
};
|
|
|
|
function GradientContainer(imageData) {
|
|
this.src = imageData.value;
|
|
this.colorStops = [];
|
|
this.type = null;
|
|
this.x0 = 0.5;
|
|
this.y0 = 0.5;
|
|
this.x1 = 0.5;
|
|
this.y1 = 0.5;
|
|
this.promise = Promise.resolve(true);
|
|
}
|
|
|
|
GradientContainer.prototype.TYPES = {
|
|
LINEAR: 1,
|
|
RADIAL: 2
|
|
};
|
|
|
|
function ImageContainer(src, cors) {
|
|
this.src = src;
|
|
this.image = new Image();
|
|
var self = this;
|
|
this.tainted = null;
|
|
this.promise = new Promise(function(resolve, reject) {
|
|
self.image.onload = resolve;
|
|
self.image.onerror = reject;
|
|
if (cors) {
|
|
self.image.crossOrigin = "anonymous";
|
|
}
|
|
self.image.src = src;
|
|
if (self.image.complete === true) {
|
|
resolve(self.image);
|
|
}
|
|
});
|
|
}
|
|
|
|
function ImageLoader(options, support) {
|
|
this.link = null;
|
|
this.options = options;
|
|
this.support = support;
|
|
this.origin = this.getOrigin(window.location.href);
|
|
}
|
|
|
|
ImageLoader.prototype.findImages = function(nodes) {
|
|
var images = [];
|
|
nodes.reduce(function(imageNodes, container) {
|
|
switch(container.node.nodeName) {
|
|
case "IMG":
|
|
return imageNodes.concat([{
|
|
args: [container.node.src],
|
|
method: "url"
|
|
}]);
|
|
case "svg":
|
|
case "IFRAME":
|
|
return imageNodes.concat([{
|
|
args: [container.node],
|
|
method: container.node.nodeName
|
|
}]);
|
|
}
|
|
return imageNodes;
|
|
}, []).forEach(this.addImage(images, this.loadImage), this);
|
|
return images;
|
|
};
|
|
|
|
ImageLoader.prototype.findBackgroundImage = function(images, container) {
|
|
container.parseBackgroundImages().filter(this.hasImageBackground).forEach(this.addImage(images, this.loadImage), this);
|
|
return images;
|
|
};
|
|
|
|
ImageLoader.prototype.addImage = function(images, callback) {
|
|
return function(newImage) {
|
|
newImage.args.forEach(function(image) {
|
|
if (!this.imageExists(images, image)) {
|
|
images.splice(0, 0, callback.call(this, newImage));
|
|
log('Added image #' + (images.length), typeof(image) === "string" ? image.substring(0, 100) : image);
|
|
}
|
|
}, this);
|
|
};
|
|
};
|
|
|
|
ImageLoader.prototype.hasImageBackground = function(imageData) {
|
|
return imageData.method !== "none";
|
|
};
|
|
|
|
ImageLoader.prototype.loadImage = function(imageData) {
|
|
if (imageData.method === "url") {
|
|
var src = imageData.args[0];
|
|
if (this.isSVG(src) && !this.support.svg && !this.options.allowTaint) {
|
|
return new SVGContainer(src);
|
|
} else if (src.match(/data:image\/.*;base64,/i)) {
|
|
return new ImageContainer(src.replace(/url\(['"]{0,}|['"]{0,}\)$/ig, ''), false);
|
|
} else if (this.isSameOrigin(src) || this.options.allowTaint === true || this.isSVG(src)) {
|
|
return new ImageContainer(src, false);
|
|
} else if (this.support.cors && !this.options.allowTaint && this.options.useCORS) {
|
|
return new ImageContainer(src, true);
|
|
} else if (this.options.proxy) {
|
|
return new ProxyImageContainer(src, this.options.proxy);
|
|
} else {
|
|
return new DummyImageContainer(src);
|
|
}
|
|
} else if (imageData.method === "linear-gradient") {
|
|
return new LinearGradientContainer(imageData);
|
|
} else if (imageData.method === "gradient") {
|
|
return new WebkitGradientContainer(imageData);
|
|
} else if (imageData.method === "svg") {
|
|
return new SVGNodeContainer(imageData.args[0], this.support.svg);
|
|
} else if (imageData.method === "IFRAME") {
|
|
return new FrameContainer(imageData.args[0], this.isSameOrigin(imageData.args[0].src), this.options);
|
|
} else {
|
|
return new DummyImageContainer(imageData);
|
|
}
|
|
};
|
|
|
|
ImageLoader.prototype.isSVG = function(src) {
|
|
return src.substring(src.length - 3).toLowerCase() === "svg" || SVGContainer.prototype.isInline(src);
|
|
};
|
|
|
|
ImageLoader.prototype.imageExists = function(images, src) {
|
|
return images.some(function(image) {
|
|
return image.src === src;
|
|
});
|
|
};
|
|
|
|
ImageLoader.prototype.isSameOrigin = function(url) {
|
|
return (this.getOrigin(url) === this.origin);
|
|
};
|
|
|
|
ImageLoader.prototype.getOrigin = function(url) {
|
|
var link = this.link || (this.link = document.createElement("a"));
|
|
link.href = url;
|
|
link.href = link.href; // IE9, LOL! - http://jsfiddle.net/niklasvh/2e48b/
|
|
return link.protocol + link.hostname + link.port;
|
|
};
|
|
|
|
ImageLoader.prototype.getPromise = function(container) {
|
|
return this.timeout(container, this.options.imageTimeout)['catch'](function() {
|
|
var dummy = new DummyImageContainer(container.src);
|
|
return dummy.promise.then(function(image) {
|
|
container.image = image;
|
|
});
|
|
});
|
|
};
|
|
|
|
ImageLoader.prototype.get = function(src) {
|
|
var found = null;
|
|
return this.images.some(function(img) {
|
|
return (found = img).src === src;
|
|
}) ? found : null;
|
|
};
|
|
|
|
ImageLoader.prototype.fetch = function(nodes) {
|
|
this.images = nodes.reduce(bind(this.findBackgroundImage, this), this.findImages(nodes));
|
|
this.images.forEach(function(image, index) {
|
|
image.promise.then(function() {
|
|
log("Succesfully loaded image #"+ (index+1), image);
|
|
}, function(e) {
|
|
log("Failed loading image #"+ (index+1), image, e);
|
|
});
|
|
});
|
|
this.ready = Promise.all(this.images.map(this.getPromise, this));
|
|
log("Finished searching images");
|
|
return this;
|
|
};
|
|
|
|
ImageLoader.prototype.timeout = function(container, timeout) {
|
|
var timer;
|
|
var promise = Promise.race([container.promise, new Promise(function(res, reject) {
|
|
timer = setTimeout(function() {
|
|
log("Timed out loading image", container);
|
|
reject(container);
|
|
}, timeout);
|
|
})]).then(function(container) {
|
|
clearTimeout(timer);
|
|
return container;
|
|
});
|
|
promise['catch'](function() {
|
|
clearTimeout(timer);
|
|
});
|
|
return promise;
|
|
};
|
|
|
|
function LinearGradientContainer(imageData) {
|
|
GradientContainer.apply(this, arguments);
|
|
this.type = this.TYPES.LINEAR;
|
|
|
|
var hasDirection = imageData.args[0].match(this.stepRegExp) === null;
|
|
|
|
if (hasDirection) {
|
|
imageData.args[0].split(" ").reverse().forEach(function(position) {
|
|
switch(position) {
|
|
case "left":
|
|
this.x0 = 0;
|
|
this.x1 = 1;
|
|
break;
|
|
case "top":
|
|
this.y0 = 0;
|
|
this.y1 = 1;
|
|
break;
|
|
case "right":
|
|
this.x0 = 1;
|
|
this.x1 = 0;
|
|
break;
|
|
case "bottom":
|
|
this.y0 = 1;
|
|
this.y1 = 0;
|
|
break;
|
|
case "to":
|
|
var y0 = this.y0;
|
|
var x0 = this.x0;
|
|
this.y0 = this.y1;
|
|
this.x0 = this.x1;
|
|
this.x1 = x0;
|
|
this.y1 = y0;
|
|
break;
|
|
}
|
|
}, this);
|
|
} else {
|
|
this.y0 = 0;
|
|
this.y1 = 1;
|
|
}
|
|
|
|
this.colorStops = imageData.args.slice(hasDirection ? 1 : 0).map(function(colorStop) {
|
|
var colorStopMatch = colorStop.match(this.stepRegExp);
|
|
return {
|
|
color: new Color(colorStopMatch[1]),
|
|
stop: colorStopMatch[3] === "%" ? colorStopMatch[2] / 100 : null
|
|
};
|
|
}, this);
|
|
|
|
if (this.colorStops[0].stop === null) {
|
|
this.colorStops[0].stop = 0;
|
|
}
|
|
|
|
if (this.colorStops[this.colorStops.length - 1].stop === null) {
|
|
this.colorStops[this.colorStops.length - 1].stop = 1;
|
|
}
|
|
|
|
this.colorStops.forEach(function(colorStop, index) {
|
|
if (colorStop.stop === null) {
|
|
this.colorStops.slice(index).some(function(find, count) {
|
|
if (find.stop !== null) {
|
|
colorStop.stop = ((find.stop - this.colorStops[index - 1].stop) / (count + 1)) + this.colorStops[index - 1].stop;
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}, this);
|
|
}
|
|
}, this);
|
|
}
|
|
|
|
LinearGradientContainer.prototype = Object.create(GradientContainer.prototype);
|
|
|
|
LinearGradientContainer.prototype.stepRegExp = /((?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\))\s*(\d{1,3})?(%|px)?/;
|
|
|
|
function log() {
|
|
if (window.html2canvas.logging && window.console && window.console.log) {
|
|
Function.prototype.bind.call(window.console.log, (window.console)).apply(window.console, [(Date.now() - window.html2canvas.start) + "ms", "html2canvas:"].concat([].slice.call(arguments, 0)));
|
|
}
|
|
}
|
|
|
|
function NodeContainer(node, parent) {
|
|
this.node = node;
|
|
this.parent = parent;
|
|
this.stack = null;
|
|
this.bounds = null;
|
|
this.borders = null;
|
|
this.clip = [];
|
|
this.backgroundClip = [];
|
|
this.offsetBounds = null;
|
|
this.visible = null;
|
|
this.computedStyles = null;
|
|
this.colors = {};
|
|
this.styles = {};
|
|
this.backgroundImages = null;
|
|
this.transformData = null;
|
|
this.transformMatrix = null;
|
|
this.isPseudoElement = false;
|
|
this.opacity = null;
|
|
}
|
|
|
|
NodeContainer.prototype.cloneTo = function(stack) {
|
|
stack.visible = this.visible;
|
|
stack.borders = this.borders;
|
|
stack.bounds = this.bounds;
|
|
stack.clip = this.clip;
|
|
stack.backgroundClip = this.backgroundClip;
|
|
stack.computedStyles = this.computedStyles;
|
|
stack.styles = this.styles;
|
|
stack.backgroundImages = this.backgroundImages;
|
|
stack.opacity = this.opacity;
|
|
};
|
|
|
|
NodeContainer.prototype.getOpacity = function() {
|
|
return this.opacity === null ? (this.opacity = this.cssFloat('opacity')) : this.opacity;
|
|
};
|
|
|
|
NodeContainer.prototype.assignStack = function(stack) {
|
|
this.stack = stack;
|
|
stack.children.push(this);
|
|
};
|
|
|
|
NodeContainer.prototype.isElementVisible = function() {
|
|
return this.node.nodeType === Node.TEXT_NODE ? this.parent.visible : (
|
|
this.css('display') !== "none" &&
|
|
this.css('visibility') !== "hidden" &&
|
|
!this.node.hasAttribute("data-html2canvas-ignore") &&
|
|
(this.node.nodeName !== "INPUT" || this.node.getAttribute("type") !== "hidden")
|
|
);
|
|
};
|
|
|
|
NodeContainer.prototype.css = function(attribute) {
|
|
if (!this.computedStyles) {
|
|
this.computedStyles = this.isPseudoElement ? this.parent.computedStyle(this.before ? ":before" : ":after") : this.computedStyle(null);
|
|
}
|
|
|
|
return this.styles[attribute] || (this.styles[attribute] = this.computedStyles[attribute]);
|
|
};
|
|
|
|
NodeContainer.prototype.prefixedCss = function(attribute) {
|
|
var prefixes = ["webkit", "moz", "ms", "o"];
|
|
var value = this.css(attribute);
|
|
if (value === undefined) {
|
|
prefixes.some(function(prefix) {
|
|
value = this.css(prefix + attribute.substr(0, 1).toUpperCase() + attribute.substr(1));
|
|
return value !== undefined;
|
|
}, this);
|
|
}
|
|
return value === undefined ? null : value;
|
|
};
|
|
|
|
NodeContainer.prototype.computedStyle = function(type) {
|
|
return this.node.ownerDocument.defaultView.getComputedStyle(this.node, type);
|
|
};
|
|
|
|
NodeContainer.prototype.cssInt = function(attribute) {
|
|
var value = parseInt(this.css(attribute), 10);
|
|
return (isNaN(value)) ? 0 : value; // borders in old IE are throwing 'medium' for demo.html
|
|
};
|
|
|
|
NodeContainer.prototype.color = function(attribute) {
|
|
return this.colors[attribute] || (this.colors[attribute] = new Color(this.css(attribute)));
|
|
};
|
|
|
|
NodeContainer.prototype.cssFloat = function(attribute) {
|
|
var value = parseFloat(this.css(attribute));
|
|
return (isNaN(value)) ? 0 : value;
|
|
};
|
|
|
|
NodeContainer.prototype.fontWeight = function() {
|
|
var weight = this.css("fontWeight");
|
|
switch(parseInt(weight, 10)){
|
|
case 401:
|
|
weight = "bold";
|
|
break;
|
|
case 400:
|
|
weight = "normal";
|
|
break;
|
|
}
|
|
return weight;
|
|
};
|
|
|
|
NodeContainer.prototype.parseClip = function() {
|
|
var matches = this.css('clip').match(this.CLIP);
|
|
if (matches) {
|
|
return {
|
|
top: parseInt(matches[1], 10),
|
|
right: parseInt(matches[2], 10),
|
|
bottom: parseInt(matches[3], 10),
|
|
left: parseInt(matches[4], 10)
|
|
};
|
|
}
|
|
return null;
|
|
};
|
|
|
|
NodeContainer.prototype.parseBackgroundImages = function() {
|
|
return this.backgroundImages || (this.backgroundImages = parseBackgrounds(this.css("backgroundImage")));
|
|
};
|
|
|
|
NodeContainer.prototype.cssList = function(property, index) {
|
|
var value = (this.css(property) || '').split(',');
|
|
value = value[index || 0] || value[0] || 'auto';
|
|
value = value.trim().split(' ');
|
|
if (value.length === 1) {
|
|
value = [value[0], value[0]];
|
|
}
|
|
return value;
|
|
};
|
|
|
|
NodeContainer.prototype.parseBackgroundSize = function(bounds, image, index) {
|
|
var size = this.cssList("backgroundSize", index);
|
|
var width, height;
|
|
|
|
if (isPercentage(size[0])) {
|
|
width = bounds.width * parseFloat(size[0]) / 100;
|
|
} else if (/contain|cover/.test(size[0])) {
|
|
var targetRatio = bounds.width / bounds.height, currentRatio = image.width / image.height;
|
|
return (targetRatio < currentRatio ^ size[0] === 'contain') ? {width: bounds.height * currentRatio, height: bounds.height} : {width: bounds.width, height: bounds.width / currentRatio};
|
|
} else {
|
|
width = parseInt(size[0], 10);
|
|
}
|
|
|
|
if (size[0] === 'auto' && size[1] === 'auto') {
|
|
height = image.height;
|
|
} else if (size[1] === 'auto') {
|
|
height = width / image.width * image.height;
|
|
} else if (isPercentage(size[1])) {
|
|
height = bounds.height * parseFloat(size[1]) / 100;
|
|
} else {
|
|
height = parseInt(size[1], 10);
|
|
}
|
|
|
|
if (size[0] === 'auto') {
|
|
width = height / image.height * image.width;
|
|
}
|
|
|
|
return {width: width, height: height};
|
|
};
|
|
|
|
NodeContainer.prototype.parseBackgroundPosition = function(bounds, image, index, backgroundSize) {
|
|
var position = this.cssList('backgroundPosition', index);
|
|
var left, top;
|
|
|
|
if (isPercentage(position[0])){
|
|
left = (bounds.width - (backgroundSize || image).width) * (parseFloat(position[0]) / 100);
|
|
} else {
|
|
left = parseInt(position[0], 10);
|
|
}
|
|
|
|
if (position[1] === 'auto') {
|
|
top = left / image.width * image.height;
|
|
} else if (isPercentage(position[1])){
|
|
top = (bounds.height - (backgroundSize || image).height) * parseFloat(position[1]) / 100;
|
|
} else {
|
|
top = parseInt(position[1], 10);
|
|
}
|
|
|
|
if (position[0] === 'auto') {
|
|
left = top / image.height * image.width;
|
|
}
|
|
|
|
return {left: left, top: top};
|
|
};
|
|
|
|
NodeContainer.prototype.parseBackgroundRepeat = function(index) {
|
|
return this.cssList("backgroundRepeat", index)[0];
|
|
};
|
|
|
|
NodeContainer.prototype.parseTextShadows = function() {
|
|
var textShadow = this.css("textShadow");
|
|
var results = [];
|
|
|
|
if (textShadow && textShadow !== 'none') {
|
|
var shadows = textShadow.match(this.TEXT_SHADOW_PROPERTY);
|
|
for (var i = 0; shadows && (i < shadows.length); i++) {
|
|
var s = shadows[i].match(this.TEXT_SHADOW_VALUES);
|
|
results.push({
|
|
color: new Color(s[0]),
|
|
offsetX: s[1] ? parseFloat(s[1].replace('px', '')) : 0,
|
|
offsetY: s[2] ? parseFloat(s[2].replace('px', '')) : 0,
|
|
blur: s[3] ? s[3].replace('px', '') : 0
|
|
});
|
|
}
|
|
}
|
|
return results;
|
|
};
|
|
|
|
NodeContainer.prototype.parseTransform = function() {
|
|
if (!this.transformData) {
|
|
if (this.hasTransform()) {
|
|
var offset = this.parseBounds();
|
|
var origin = this.prefixedCss("transformOrigin").split(" ").map(removePx).map(asFloat);
|
|
origin[0] += offset.left;
|
|
origin[1] += offset.top;
|
|
this.transformData = {
|
|
origin: origin,
|
|
matrix: this.parseTransformMatrix()
|
|
};
|
|
} else {
|
|
this.transformData = {
|
|
origin: [0, 0],
|
|
matrix: [1, 0, 0, 1, 0, 0]
|
|
};
|
|
}
|
|
}
|
|
return this.transformData;
|
|
};
|
|
|
|
NodeContainer.prototype.parseTransformMatrix = function() {
|
|
if (!this.transformMatrix) {
|
|
var transform = this.prefixedCss("transform");
|
|
var matrix = transform ? parseMatrix(transform.match(this.MATRIX_PROPERTY)) : null;
|
|
this.transformMatrix = matrix ? matrix : [1, 0, 0, 1, 0, 0];
|
|
}
|
|
return this.transformMatrix;
|
|
};
|
|
|
|
NodeContainer.prototype.parseBounds = function() {
|
|
return this.bounds || (this.bounds = this.hasTransform() ? offsetBounds(this.node) : getBounds(this.node));
|
|
};
|
|
|
|
NodeContainer.prototype.hasTransform = function() {
|
|
return this.parseTransformMatrix().join(",") !== "1,0,0,1,0,0" || (this.parent && this.parent.hasTransform());
|
|
};
|
|
|
|
NodeContainer.prototype.getValue = function() {
|
|
var value = this.node.value || "";
|
|
if (this.node.tagName === "SELECT") {
|
|
value = selectionValue(this.node);
|
|
} else if (this.node.type === "password") {
|
|
value = Array(value.length + 1).join('\u2022'); // jshint ignore:line
|
|
}
|
|
return value.length === 0 ? (this.node.placeholder || "") : value;
|
|
};
|
|
|
|
NodeContainer.prototype.MATRIX_PROPERTY = /(matrix)\((.+)\)/;
|
|
NodeContainer.prototype.TEXT_SHADOW_PROPERTY = /((rgba|rgb)\([^\)]+\)(\s-?\d+px){0,})/g;
|
|
NodeContainer.prototype.TEXT_SHADOW_VALUES = /(-?\d+px)|(#.+)|(rgb\(.+\))|(rgba\(.+\))/g;
|
|
NodeContainer.prototype.CLIP = /^rect\((\d+)px,? (\d+)px,? (\d+)px,? (\d+)px\)$/;
|
|
|
|
function selectionValue(node) {
|
|
var option = node.options[node.selectedIndex || 0];
|
|
return option ? (option.text || "") : "";
|
|
}
|
|
|
|
function parseMatrix(match) {
|
|
if (match && match[1] === "matrix") {
|
|
return match[2].split(",").map(function(s) {
|
|
return parseFloat(s.trim());
|
|
});
|
|
}
|
|
}
|
|
|
|
function isPercentage(value) {
|
|
return value.toString().indexOf("%") !== -1;
|
|
}
|
|
|
|
function parseBackgrounds(backgroundImage) {
|
|
var whitespace = ' \r\n\t',
|
|
method, definition, prefix, prefix_i, block, results = [],
|
|
mode = 0, numParen = 0, quote, args;
|
|
var appendResult = function() {
|
|
if(method) {
|
|
if (definition.substr(0, 1) === '"') {
|
|
definition = definition.substr(1, definition.length - 2);
|
|
}
|
|
if (definition) {
|
|
args.push(definition);
|
|
}
|
|
if (method.substr(0, 1) === '-' && (prefix_i = method.indexOf('-', 1 ) + 1) > 0) {
|
|
prefix = method.substr(0, prefix_i);
|
|
method = method.substr(prefix_i);
|
|
}
|
|
results.push({
|
|
prefix: prefix,
|
|
method: method.toLowerCase(),
|
|
value: block,
|
|
args: args,
|
|
image: null
|
|
});
|
|
}
|
|
args = [];
|
|
method = prefix = definition = block = '';
|
|
};
|
|
args = [];
|
|
method = prefix = definition = block = '';
|
|
backgroundImage.split("").forEach(function(c) {
|
|
if (mode === 0 && whitespace.indexOf(c) > -1) {
|
|
return;
|
|
}
|
|
switch(c) {
|
|
case '"':
|
|
if(!quote) {
|
|
quote = c;
|
|
} else if(quote === c) {
|
|
quote = null;
|
|
}
|
|
break;
|
|
case '(':
|
|
if(quote) {
|
|
break;
|
|
} else if(mode === 0) {
|
|
mode = 1;
|
|
block += c;
|
|
return;
|
|
} else {
|
|
numParen++;
|
|
}
|
|
break;
|
|
case ')':
|
|
if (quote) {
|
|
break;
|
|
} else if(mode === 1) {
|
|
if(numParen === 0) {
|
|
mode = 0;
|
|
block += c;
|
|
appendResult();
|
|
return;
|
|
} else {
|
|
numParen--;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ',':
|
|
if (quote) {
|
|
break;
|
|
} else if(mode === 0) {
|
|
appendResult();
|
|
return;
|
|
} else if (mode === 1) {
|
|
if (numParen === 0 && !method.match(/^url$/i)) {
|
|
args.push(definition);
|
|
definition = '';
|
|
block += c;
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
block += c;
|
|
if (mode === 0) {
|
|
method += c;
|
|
} else {
|
|
definition += c;
|
|
}
|
|
});
|
|
|
|
appendResult();
|
|
return results;
|
|
}
|
|
|
|
function removePx(str) {
|
|
return str.replace("px", "");
|
|
}
|
|
|
|
function asFloat(str) {
|
|
return parseFloat(str);
|
|
}
|
|
|
|
function getBounds(node) {
|
|
if (node.getBoundingClientRect) {
|
|
var clientRect = node.getBoundingClientRect();
|
|
var width = node.offsetWidth == null ? clientRect.width : node.offsetWidth;
|
|
return {
|
|
top: clientRect.top,
|
|
bottom: clientRect.bottom || (clientRect.top + clientRect.height),
|
|
right: clientRect.left + width,
|
|
left: clientRect.left,
|
|
width: width,
|
|
height: node.offsetHeight == null ? clientRect.height : node.offsetHeight
|
|
};
|
|
}
|
|
return {};
|
|
}
|
|
|
|
function offsetBounds(node) {
|
|
var parent = node.offsetParent ? offsetBounds(node.offsetParent) : {top: 0, left: 0};
|
|
|
|
return {
|
|
top: node.offsetTop + parent.top,
|
|
bottom: node.offsetTop + node.offsetHeight + parent.top,
|
|
right: node.offsetLeft + parent.left + node.offsetWidth,
|
|
left: node.offsetLeft + parent.left,
|
|
width: node.offsetWidth,
|
|
height: node.offsetHeight
|
|
};
|
|
}
|
|
|
|
function NodeParser(element, renderer, support, imageLoader, options) {
|
|
log("Starting NodeParser");
|
|
this.renderer = renderer;
|
|
this.options = options;
|
|
this.range = null;
|
|
this.support = support;
|
|
this.renderQueue = [];
|
|
this.stack = new StackingContext(true, 1, element.ownerDocument, null);
|
|
var parent = new NodeContainer(element, null);
|
|
if (options.background) {
|
|
renderer.rectangle(0, 0, renderer.width, renderer.height, new Color(options.background));
|
|
}
|
|
if (element === element.ownerDocument.documentElement) {
|
|
// http://www.w3.org/TR/css3-background/#special-backgrounds
|
|
var canvasBackground = new NodeContainer(parent.color('backgroundColor').isTransparent() ? element.ownerDocument.body : element.ownerDocument.documentElement, null);
|
|
renderer.rectangle(0, 0, renderer.width, renderer.height, canvasBackground.color('backgroundColor'));
|
|
}
|
|
parent.visibile = parent.isElementVisible();
|
|
this.createPseudoHideStyles(element.ownerDocument);
|
|
this.disableAnimations(element.ownerDocument);
|
|
this.nodes = flatten([parent].concat(this.getChildren(parent)).filter(function(container) {
|
|
return container.visible = container.isElementVisible();
|
|
}).map(this.getPseudoElements, this));
|
|
this.fontMetrics = new FontMetrics();
|
|
log("Fetched nodes, total:", this.nodes.length);
|
|
log("Calculate overflow clips");
|
|
this.calculateOverflowClips();
|
|
log("Start fetching images");
|
|
this.images = imageLoader.fetch(this.nodes.filter(isElement));
|
|
this.ready = this.images.ready.then(bind(function() {
|
|
log("Images loaded, starting parsing");
|
|
log("Creating stacking contexts");
|
|
this.createStackingContexts();
|
|
log("Sorting stacking contexts");
|
|
this.sortStackingContexts(this.stack);
|
|
this.parse(this.stack);
|
|
log("Render queue created with " + this.renderQueue.length + " items");
|
|
return new Promise(bind(function(resolve) {
|
|
if (!options.async) {
|
|
this.renderQueue.forEach(this.paint, this);
|
|
resolve();
|
|
} else if (typeof(options.async) === "function") {
|
|
options.async.call(this, this.renderQueue, resolve);
|
|
} else if (this.renderQueue.length > 0){
|
|
this.renderIndex = 0;
|
|
this.asyncRenderer(this.renderQueue, resolve);
|
|
} else {
|
|
resolve();
|
|
}
|
|
}, this));
|
|
}, this));
|
|
}
|
|
|
|
NodeParser.prototype.calculateOverflowClips = function() {
|
|
this.nodes.forEach(function(container) {
|
|
if (isElement(container)) {
|
|
if (isPseudoElement(container)) {
|
|
container.appendToDOM();
|
|
}
|
|
container.borders = this.parseBorders(container);
|
|
var clip = (container.css('overflow') === "hidden") ? [container.borders.clip] : [];
|
|
var cssClip = container.parseClip();
|
|
if (cssClip && ["absolute", "fixed"].indexOf(container.css('position')) !== -1) {
|
|
clip.push([["rect",
|
|
container.bounds.left + cssClip.left,
|
|
container.bounds.top + cssClip.top,
|
|
cssClip.right - cssClip.left,
|
|
cssClip.bottom - cssClip.top
|
|
]]);
|
|
}
|
|
container.clip = hasParentClip(container) ? container.parent.clip.concat(clip) : clip;
|
|
container.backgroundClip = (container.css('overflow') !== "hidden") ? container.clip.concat([container.borders.clip]) : container.clip;
|
|
if (isPseudoElement(container)) {
|
|
container.cleanDOM();
|
|
}
|
|
} else if (isTextNode(container)) {
|
|
container.clip = hasParentClip(container) ? container.parent.clip : [];
|
|
}
|
|
if (!isPseudoElement(container)) {
|
|
container.bounds = null;
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
function hasParentClip(container) {
|
|
return container.parent && container.parent.clip.length;
|
|
}
|
|
|
|
NodeParser.prototype.asyncRenderer = function(queue, resolve, asyncTimer) {
|
|
asyncTimer = asyncTimer || Date.now();
|
|
this.paint(queue[this.renderIndex++]);
|
|
if (queue.length === this.renderIndex) {
|
|
resolve();
|
|
} else if (asyncTimer + 20 > Date.now()) {
|
|
this.asyncRenderer(queue, resolve, asyncTimer);
|
|
} else {
|
|
setTimeout(bind(function() {
|
|
this.asyncRenderer(queue, resolve);
|
|
}, this), 0);
|
|
}
|
|
};
|
|
|
|
NodeParser.prototype.createPseudoHideStyles = function(document) {
|
|
this.createStyles(document, '.' + PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_BEFORE + ':before { content: "" !important; display: none !important; }' +
|
|
'.' + PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_AFTER + ':after { content: "" !important; display: none !important; }');
|
|
};
|
|
|
|
NodeParser.prototype.disableAnimations = function(document) {
|
|
this.createStyles(document, '* { -webkit-animation: none !important; -moz-animation: none !important; -o-animation: none !important; animation: none !important; ' +
|
|
'-webkit-transition: none !important; -moz-transition: none !important; -o-transition: none !important; transition: none !important;}');
|
|
};
|
|
|
|
NodeParser.prototype.createStyles = function(document, styles) {
|
|
var hidePseudoElements = document.createElement('style');
|
|
hidePseudoElements.innerHTML = styles;
|
|
document.body.appendChild(hidePseudoElements);
|
|
};
|
|
|
|
NodeParser.prototype.getPseudoElements = function(container) {
|
|
var nodes = [[container]];
|
|
if (container.node.nodeType === Node.ELEMENT_NODE) {
|
|
var before = this.getPseudoElement(container, ":before");
|
|
var after = this.getPseudoElement(container, ":after");
|
|
|
|
if (before) {
|
|
nodes.push(before);
|
|
}
|
|
|
|
if (after) {
|
|
nodes.push(after);
|
|
}
|
|
}
|
|
return flatten(nodes);
|
|
};
|
|
|
|
function toCamelCase(str) {
|
|
return str.replace(/(\-[a-z])/g, function(match){
|
|
return match.toUpperCase().replace('-','');
|
|
});
|
|
}
|
|
|
|
NodeParser.prototype.getPseudoElement = function(container, type) {
|
|
var style = container.computedStyle(type);
|
|
if(!style || !style.content || style.content === "none" || style.content === "-moz-alt-content" || style.display === "none") {
|
|
return null;
|
|
}
|
|
|
|
var content = stripQuotes(style.content);
|
|
var isImage = content.substr(0, 3) === 'url';
|
|
var pseudoNode = document.createElement(isImage ? 'img' : 'html2canvaspseudoelement');
|
|
var pseudoContainer = new PseudoElementContainer(pseudoNode, container, type);
|
|
|
|
for (var i = style.length-1; i >= 0; i--) {
|
|
var property = toCamelCase(style.item(i));
|
|
pseudoNode.style[property] = style[property];
|
|
}
|
|
|
|
pseudoNode.className = PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_BEFORE + " " + PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_AFTER;
|
|
|
|
if (isImage) {
|
|
pseudoNode.src = parseBackgrounds(content)[0].args[0];
|
|
return [pseudoContainer];
|
|
} else {
|
|
var text = document.createTextNode(content);
|
|
pseudoNode.appendChild(text);
|
|
return [pseudoContainer, new TextContainer(text, pseudoContainer)];
|
|
}
|
|
};
|
|
|
|
|
|
NodeParser.prototype.getChildren = function(parentContainer) {
|
|
return flatten([].filter.call(parentContainer.node.childNodes, renderableNode).map(function(node) {
|
|
var container = [node.nodeType === Node.TEXT_NODE ? new TextContainer(node, parentContainer) : new NodeContainer(node, parentContainer)].filter(nonIgnoredElement);
|
|
return node.nodeType === Node.ELEMENT_NODE && container.length && node.tagName !== "TEXTAREA" ? (container[0].isElementVisible() ? container.concat(this.getChildren(container[0])) : []) : container;
|
|
}, this));
|
|
};
|
|
|
|
NodeParser.prototype.newStackingContext = function(container, hasOwnStacking) {
|
|
var stack = new StackingContext(hasOwnStacking, container.getOpacity(), container.node, container.parent);
|
|
container.cloneTo(stack);
|
|
var parentStack = hasOwnStacking ? stack.getParentStack(this) : stack.parent.stack;
|
|
parentStack.contexts.push(stack);
|
|
container.stack = stack;
|
|
};
|
|
|
|
NodeParser.prototype.createStackingContexts = function() {
|
|
this.nodes.forEach(function(container) {
|
|
if (isElement(container) && (this.isRootElement(container) || hasOpacity(container) || isPositionedForStacking(container) || this.isBodyWithTransparentRoot(container) || container.hasTransform())) {
|
|
this.newStackingContext(container, true);
|
|
} else if (isElement(container) && ((isPositioned(container) && zIndex0(container)) || isInlineBlock(container) || isFloating(container))) {
|
|
this.newStackingContext(container, false);
|
|
} else {
|
|
container.assignStack(container.parent.stack);
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
NodeParser.prototype.isBodyWithTransparentRoot = function(container) {
|
|
return container.node.nodeName === "BODY" && container.parent.color('backgroundColor').isTransparent();
|
|
};
|
|
|
|
NodeParser.prototype.isRootElement = function(container) {
|
|
return container.parent === null;
|
|
};
|
|
|
|
NodeParser.prototype.sortStackingContexts = function(stack) {
|
|
stack.contexts.sort(zIndexSort(stack.contexts.slice(0)));
|
|
stack.contexts.forEach(this.sortStackingContexts, this);
|
|
};
|
|
|
|
NodeParser.prototype.parseTextBounds = function(container) {
|
|
return function(text, index, textList) {
|
|
if (container.parent.css("textDecoration").substr(0, 4) !== "none" || text.trim().length !== 0) {
|
|
if (this.support.rangeBounds && !container.parent.hasTransform()) {
|
|
var offset = textList.slice(0, index).join("").length;
|
|
return this.getRangeBounds(container.node, offset, text.length);
|
|
} else if (container.node && typeof(container.node.data) === "string") {
|
|
var replacementNode = container.node.splitText(text.length);
|
|
var bounds = this.getWrapperBounds(container.node, container.parent.hasTransform());
|
|
container.node = replacementNode;
|
|
return bounds;
|
|
}
|
|
} else if(!this.support.rangeBounds || container.parent.hasTransform()){
|
|
container.node = container.node.splitText(text.length);
|
|
}
|
|
return {};
|
|
};
|
|
};
|
|
|
|
NodeParser.prototype.getWrapperBounds = function(node, transform) {
|
|
var wrapper = node.ownerDocument.createElement('html2canvaswrapper');
|
|
var parent = node.parentNode,
|
|
backupText = node.cloneNode(true);
|
|
|
|
wrapper.appendChild(node.cloneNode(true));
|
|
parent.replaceChild(wrapper, node);
|
|
var bounds = transform ? offsetBounds(wrapper) : getBounds(wrapper);
|
|
parent.replaceChild(backupText, wrapper);
|
|
return bounds;
|
|
};
|
|
|
|
NodeParser.prototype.getRangeBounds = function(node, offset, length) {
|
|
var range = this.range || (this.range = node.ownerDocument.createRange());
|
|
range.setStart(node, offset);
|
|
range.setEnd(node, offset + length);
|
|
return range.getBoundingClientRect();
|
|
};
|
|
|
|
function ClearTransform() {}
|
|
|
|
NodeParser.prototype.parse = function(stack) {
|
|
// http://www.w3.org/TR/CSS21/visuren.html#z-index
|
|
var negativeZindex = stack.contexts.filter(negativeZIndex); // 2. the child stacking contexts with negative stack levels (most negative first).
|
|
var descendantElements = stack.children.filter(isElement);
|
|
var descendantNonFloats = descendantElements.filter(not(isFloating));
|
|
var nonInlineNonPositionedDescendants = descendantNonFloats.filter(not(isPositioned)).filter(not(inlineLevel)); // 3 the in-flow, non-inline-level, non-positioned descendants.
|
|
var nonPositionedFloats = descendantElements.filter(not(isPositioned)).filter(isFloating); // 4. the non-positioned floats.
|
|
var inFlow = descendantNonFloats.filter(not(isPositioned)).filter(inlineLevel); // 5. the in-flow, inline-level, non-positioned descendants, including inline tables and inline blocks.
|
|
var stackLevel0 = stack.contexts.concat(descendantNonFloats.filter(isPositioned)).filter(zIndex0); // 6. the child stacking contexts with stack level 0 and the positioned descendants with stack level 0.
|
|
var text = stack.children.filter(isTextNode).filter(hasText);
|
|
var positiveZindex = stack.contexts.filter(positiveZIndex); // 7. the child stacking contexts with positive stack levels (least positive first).
|
|
negativeZindex.concat(nonInlineNonPositionedDescendants).concat(nonPositionedFloats)
|
|
.concat(inFlow).concat(stackLevel0).concat(text).concat(positiveZindex).forEach(function(container) {
|
|
this.renderQueue.push(container);
|
|
if (isStackingContext(container)) {
|
|
this.parse(container);
|
|
this.renderQueue.push(new ClearTransform());
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
NodeParser.prototype.paint = function(container) {
|
|
try {
|
|
if (container instanceof ClearTransform) {
|
|
this.renderer.ctx.restore();
|
|
} else if (isTextNode(container)) {
|
|
if (isPseudoElement(container.parent)) {
|
|
container.parent.appendToDOM();
|
|
}
|
|
this.paintText(container);
|
|
if (isPseudoElement(container.parent)) {
|
|
container.parent.cleanDOM();
|
|
}
|
|
} else {
|
|
this.paintNode(container);
|
|
}
|
|
} catch(e) {
|
|
log(e);
|
|
if (this.options.strict) {
|
|
throw e;
|
|
}
|
|
}
|
|
};
|
|
|
|
NodeParser.prototype.paintNode = function(container) {
|
|
if (isStackingContext(container)) {
|
|
this.renderer.setOpacity(container.opacity);
|
|
this.renderer.ctx.save();
|
|
if (container.hasTransform()) {
|
|
this.renderer.setTransform(container.parseTransform());
|
|
}
|
|
}
|
|
|
|
if (container.node.nodeName === "INPUT" && container.node.type === "checkbox") {
|
|
this.paintCheckbox(container);
|
|
} else if (container.node.nodeName === "INPUT" && container.node.type === "radio") {
|
|
this.paintRadio(container);
|
|
} else {
|
|
this.paintElement(container);
|
|
}
|
|
};
|
|
|
|
NodeParser.prototype.paintElement = function(container) {
|
|
var bounds = container.parseBounds();
|
|
this.renderer.clip(container.backgroundClip, function() {
|
|
this.renderer.renderBackground(container, bounds, container.borders.borders.map(getWidth));
|
|
}, this);
|
|
|
|
this.renderer.clip(container.clip, function() {
|
|
this.renderer.renderBorders(container.borders.borders);
|
|
}, this);
|
|
|
|
this.renderer.clip(container.backgroundClip, function() {
|
|
switch (container.node.nodeName) {
|
|
case "svg":
|
|
case "IFRAME":
|
|
var imgContainer = this.images.get(container.node);
|
|
if (imgContainer) {
|
|
this.renderer.renderImage(container, bounds, container.borders, imgContainer);
|
|
} else {
|
|
log("Error loading <" + container.node.nodeName + ">", container.node);
|
|
}
|
|
break;
|
|
case "IMG":
|
|
var imageContainer = this.images.get(container.node.src);
|
|
if (imageContainer) {
|
|
this.renderer.renderImage(container, bounds, container.borders, imageContainer);
|
|
} else {
|
|
log("Error loading <img>", container.node.src);
|
|
}
|
|
break;
|
|
case "CANVAS":
|
|
this.renderer.renderImage(container, bounds, container.borders, {image: container.node});
|
|
break;
|
|
case "SELECT":
|
|
case "INPUT":
|
|
case "TEXTAREA":
|
|
this.paintFormValue(container);
|
|
break;
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
NodeParser.prototype.paintCheckbox = function(container) {
|
|
var b = container.parseBounds();
|
|
|
|
var size = Math.min(b.width, b.height);
|
|
var bounds = {width: size - 1, height: size - 1, top: b.top, left: b.left};
|
|
var r = [3, 3];
|
|
var radius = [r, r, r, r];
|
|
var borders = [1,1,1,1].map(function(w) {
|
|
return {color: new Color('#A5A5A5'), width: w};
|
|
});
|
|
|
|
var borderPoints = calculateCurvePoints(bounds, radius, borders);
|
|
|
|
this.renderer.clip(container.backgroundClip, function() {
|
|
this.renderer.rectangle(bounds.left + 1, bounds.top + 1, bounds.width - 2, bounds.height - 2, new Color("#DEDEDE"));
|
|
this.renderer.renderBorders(calculateBorders(borders, bounds, borderPoints, radius));
|
|
if (container.node.checked) {
|
|
this.renderer.font(new Color('#424242'), 'normal', 'normal', 'bold', (size - 3) + "px", 'arial');
|
|
this.renderer.text("\u2714", bounds.left + size / 6, bounds.top + size - 1);
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
NodeParser.prototype.paintRadio = function(container) {
|
|
var bounds = container.parseBounds();
|
|
|
|
var size = Math.min(bounds.width, bounds.height) - 2;
|
|
|
|
this.renderer.clip(container.backgroundClip, function() {
|
|
this.renderer.circleStroke(bounds.left + 1, bounds.top + 1, size, new Color('#DEDEDE'), 1, new Color('#A5A5A5'));
|
|
if (container.node.checked) {
|
|
this.renderer.circle(Math.ceil(bounds.left + size / 4) + 1, Math.ceil(bounds.top + size / 4) + 1, Math.floor(size / 2), new Color('#424242'));
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
NodeParser.prototype.paintFormValue = function(container) {
|
|
var value = container.getValue();
|
|
if (value.length > 0) {
|
|
var document = container.node.ownerDocument;
|
|
var wrapper = document.createElement('html2canvaswrapper');
|
|
var properties = ['lineHeight', 'textAlign', 'fontFamily', 'fontWeight', 'fontSize', 'color',
|
|
'paddingLeft', 'paddingTop', 'paddingRight', 'paddingBottom',
|
|
'width', 'height', 'borderLeftStyle', 'borderTopStyle', 'borderLeftWidth', 'borderTopWidth',
|
|
'boxSizing', 'whiteSpace', 'wordWrap'];
|
|
|
|
properties.forEach(function(property) {
|
|
try {
|
|
wrapper.style[property] = container.css(property);
|
|
} catch(e) {
|
|
// Older IE has issues with "border"
|
|
log("html2canvas: Parse: Exception caught in renderFormValue: " + e.message);
|
|
}
|
|
});
|
|
var bounds = container.parseBounds();
|
|
wrapper.style.position = "fixed";
|
|
wrapper.style.left = bounds.left + "px";
|
|
wrapper.style.top = bounds.top + "px";
|
|
wrapper.textContent = value;
|
|
document.body.appendChild(wrapper);
|
|
this.paintText(new TextContainer(wrapper.firstChild, container));
|
|
document.body.removeChild(wrapper);
|
|
}
|
|
};
|
|
|
|
NodeParser.prototype.paintText = function(container) {
|
|
container.applyTextTransform();
|
|
var characters = window.html2canvas.punycode.ucs2.decode(container.node.data);
|
|
var textList = (!this.options.letterRendering || noLetterSpacing(container)) && !hasUnicode(container.node.data) ? getWords(characters) : characters.map(function(character) {
|
|
return window.html2canvas.punycode.ucs2.encode([character]);
|
|
});
|
|
|
|
var weight = container.parent.fontWeight();
|
|
var size = container.parent.css('fontSize');
|
|
var family = container.parent.css('fontFamily');
|
|
var shadows = container.parent.parseTextShadows();
|
|
|
|
this.renderer.font(container.parent.color('color'), container.parent.css('fontStyle'), container.parent.css('fontVariant'), weight, size, family);
|
|
this.renderer.setOpacity(container.parent.opacity);
|
|
if (shadows.length) {
|
|
// TODO: support multiple text shadows
|
|
this.renderer.fontShadow(shadows[0].color, shadows[0].offsetX, shadows[0].offsetY, shadows[0].blur);
|
|
} else {
|
|
this.renderer.clearShadow();
|
|
}
|
|
|
|
this.renderer.clip(container.parent.clip, function() {
|
|
textList.map(this.parseTextBounds(container), this).forEach(function(bounds, index) {
|
|
if (bounds) {
|
|
this.renderer.text(textList[index], bounds.left, bounds.bottom);
|
|
this.renderTextDecoration(container.parent, bounds, this.fontMetrics.getMetrics(family, size));
|
|
}
|
|
}, this);
|
|
}, this);
|
|
};
|
|
|
|
NodeParser.prototype.renderTextDecoration = function(container, bounds, metrics) {
|
|
switch(container.css("textDecoration").split(" ")[0]) {
|
|
case "underline":
|
|
// Draws a line at the baseline of the font
|
|
// TODO As some browsers display the line as more than 1px if the font-size is big, need to take that into account both in position and size
|
|
this.renderer.rectangle(bounds.left, Math.round(bounds.top + metrics.baseline + metrics.lineWidth), bounds.width, 1, container.color("color"));
|
|
break;
|
|
case "overline":
|
|
this.renderer.rectangle(bounds.left, Math.round(bounds.top), bounds.width, 1, container.color("color"));
|
|
break;
|
|
case "line-through":
|
|
// TODO try and find exact position for line-through
|
|
this.renderer.rectangle(bounds.left, Math.ceil(bounds.top + metrics.middle + metrics.lineWidth), bounds.width, 1, container.color("color"));
|
|
break;
|
|
}
|
|
};
|
|
|
|
var borderColorTransforms = {
|
|
inset: [
|
|
["darken", 0.60],
|
|
["darken", 0.10],
|
|
["darken", 0.10],
|
|
["darken", 0.60]
|
|
]
|
|
};
|
|
|
|
NodeParser.prototype.parseBorders = function(container) {
|
|
var nodeBounds = container.parseBounds();
|
|
var radius = getBorderRadiusData(container);
|
|
var borders = ["Top", "Right", "Bottom", "Left"].map(function(side, index) {
|
|
var style = container.css('border' + side + 'Style');
|
|
var color = container.color('border' + side + 'Color');
|
|
if (style === "inset" && color.isBlack()) {
|
|
color = new Color([255, 255, 255, color.a]); // this is wrong, but
|
|
}
|
|
var colorTransform = borderColorTransforms[style] ? borderColorTransforms[style][index] : null;
|
|
return {
|
|
width: container.cssInt('border' + side + 'Width'),
|
|
color: colorTransform ? color[colorTransform[0]](colorTransform[1]) : color,
|
|
args: null
|
|
};
|
|
});
|
|
var borderPoints = calculateCurvePoints(nodeBounds, radius, borders);
|
|
|
|
return {
|
|
clip: this.parseBackgroundClip(container, borderPoints, borders, radius, nodeBounds),
|
|
borders: calculateBorders(borders, nodeBounds, borderPoints, radius)
|
|
};
|
|
};
|
|
|
|
function calculateBorders(borders, nodeBounds, borderPoints, radius) {
|
|
return borders.map(function(border, borderSide) {
|
|
if (border.width > 0) {
|
|
var bx = nodeBounds.left;
|
|
var by = nodeBounds.top;
|
|
var bw = nodeBounds.width;
|
|
var bh = nodeBounds.height - (borders[2].width);
|
|
|
|
switch(borderSide) {
|
|
case 0:
|
|
// top border
|
|
bh = borders[0].width;
|
|
border.args = drawSide({
|
|
c1: [bx, by],
|
|
c2: [bx + bw, by],
|
|
c3: [bx + bw - borders[1].width, by + bh],
|
|
c4: [bx + borders[3].width, by + bh]
|
|
}, radius[0], radius[1],
|
|
borderPoints.topLeftOuter, borderPoints.topLeftInner, borderPoints.topRightOuter, borderPoints.topRightInner);
|
|
break;
|
|
case 1:
|
|
// right border
|
|
bx = nodeBounds.left + nodeBounds.width - (borders[1].width);
|
|
bw = borders[1].width;
|
|
|
|
border.args = drawSide({
|
|
c1: [bx + bw, by],
|
|
c2: [bx + bw, by + bh + borders[2].width],
|
|
c3: [bx, by + bh],
|
|
c4: [bx, by + borders[0].width]
|
|
}, radius[1], radius[2],
|
|
borderPoints.topRightOuter, borderPoints.topRightInner, borderPoints.bottomRightOuter, borderPoints.bottomRightInner);
|
|
break;
|
|
case 2:
|
|
// bottom border
|
|
by = (by + nodeBounds.height) - (borders[2].width);
|
|
bh = borders[2].width;
|
|
border.args = drawSide({
|
|
c1: [bx + bw, by + bh],
|
|
c2: [bx, by + bh],
|
|
c3: [bx + borders[3].width, by],
|
|
c4: [bx + bw - borders[3].width, by]
|
|
}, radius[2], radius[3],
|
|
borderPoints.bottomRightOuter, borderPoints.bottomRightInner, borderPoints.bottomLeftOuter, borderPoints.bottomLeftInner);
|
|
break;
|
|
case 3:
|
|
// left border
|
|
bw = borders[3].width;
|
|
border.args = drawSide({
|
|
c1: [bx, by + bh + borders[2].width],
|
|
c2: [bx, by],
|
|
c3: [bx + bw, by + borders[0].width],
|
|
c4: [bx + bw, by + bh]
|
|
}, radius[3], radius[0],
|
|
borderPoints.bottomLeftOuter, borderPoints.bottomLeftInner, borderPoints.topLeftOuter, borderPoints.topLeftInner);
|
|
break;
|
|
}
|
|
}
|
|
return border;
|
|
});
|
|
}
|
|
|
|
NodeParser.prototype.parseBackgroundClip = function(container, borderPoints, borders, radius, bounds) {
|
|
var backgroundClip = container.css('backgroundClip'),
|
|
borderArgs = [];
|
|
|
|
switch(backgroundClip) {
|
|
case "content-box":
|
|
case "padding-box":
|
|
parseCorner(borderArgs, radius[0], radius[1], borderPoints.topLeftInner, borderPoints.topRightInner, bounds.left + borders[3].width, bounds.top + borders[0].width);
|
|
parseCorner(borderArgs, radius[1], radius[2], borderPoints.topRightInner, borderPoints.bottomRightInner, bounds.left + bounds.width - borders[1].width, bounds.top + borders[0].width);
|
|
parseCorner(borderArgs, radius[2], radius[3], borderPoints.bottomRightInner, borderPoints.bottomLeftInner, bounds.left + bounds.width - borders[1].width, bounds.top + bounds.height - borders[2].width);
|
|
parseCorner(borderArgs, radius[3], radius[0], borderPoints.bottomLeftInner, borderPoints.topLeftInner, bounds.left + borders[3].width, bounds.top + bounds.height - borders[2].width);
|
|
break;
|
|
|
|
default:
|
|
parseCorner(borderArgs, radius[0], radius[1], borderPoints.topLeftOuter, borderPoints.topRightOuter, bounds.left, bounds.top);
|
|
parseCorner(borderArgs, radius[1], radius[2], borderPoints.topRightOuter, borderPoints.bottomRightOuter, bounds.left + bounds.width, bounds.top);
|
|
parseCorner(borderArgs, radius[2], radius[3], borderPoints.bottomRightOuter, borderPoints.bottomLeftOuter, bounds.left + bounds.width, bounds.top + bounds.height);
|
|
parseCorner(borderArgs, radius[3], radius[0], borderPoints.bottomLeftOuter, borderPoints.topLeftOuter, bounds.left, bounds.top + bounds.height);
|
|
break;
|
|
}
|
|
|
|
return borderArgs;
|
|
};
|
|
|
|
function getCurvePoints(x, y, r1, r2) {
|
|
var kappa = 4 * ((Math.sqrt(2) - 1) / 3);
|
|
var ox = (r1) * kappa, // control point offset horizontal
|
|
oy = (r2) * kappa, // control point offset vertical
|
|
xm = x + r1, // x-middle
|
|
ym = y + r2; // y-middle
|
|
return {
|
|
topLeft: bezierCurve({x: x, y: ym}, {x: x, y: ym - oy}, {x: xm - ox, y: y}, {x: xm, y: y}),
|
|
topRight: bezierCurve({x: x, y: y}, {x: x + ox,y: y}, {x: xm, y: ym - oy}, {x: xm, y: ym}),
|
|
bottomRight: bezierCurve({x: xm, y: y}, {x: xm, y: y + oy}, {x: x + ox, y: ym}, {x: x, y: ym}),
|
|
bottomLeft: bezierCurve({x: xm, y: ym}, {x: xm - ox, y: ym}, {x: x, y: y + oy}, {x: x, y:y})
|
|
};
|
|
}
|
|
|
|
function calculateCurvePoints(bounds, borderRadius, borders) {
|
|
var x = bounds.left,
|
|
y = bounds.top,
|
|
width = bounds.width,
|
|
height = bounds.height,
|
|
|
|
tlh = borderRadius[0][0],
|
|
tlv = borderRadius[0][1],
|
|
trh = borderRadius[1][0],
|
|
trv = borderRadius[1][1],
|
|
brh = borderRadius[2][0],
|
|
brv = borderRadius[2][1],
|
|
blh = borderRadius[3][0],
|
|
blv = borderRadius[3][1];
|
|
|
|
var topWidth = width - trh,
|
|
rightHeight = height - brv,
|
|
bottomWidth = width - brh,
|
|
leftHeight = height - blv;
|
|
|
|
return {
|
|
topLeftOuter: getCurvePoints(x, y, tlh, tlv).topLeft.subdivide(0.5),
|
|
topLeftInner: getCurvePoints(x + borders[3].width, y + borders[0].width, Math.max(0, tlh - borders[3].width), Math.max(0, tlv - borders[0].width)).topLeft.subdivide(0.5),
|
|
topRightOuter: getCurvePoints(x + topWidth, y, trh, trv).topRight.subdivide(0.5),
|
|
topRightInner: getCurvePoints(x + Math.min(topWidth, width + borders[3].width), y + borders[0].width, (topWidth > width + borders[3].width) ? 0 :trh - borders[3].width, trv - borders[0].width).topRight.subdivide(0.5),
|
|
bottomRightOuter: getCurvePoints(x + bottomWidth, y + rightHeight, brh, brv).bottomRight.subdivide(0.5),
|
|
bottomRightInner: getCurvePoints(x + Math.min(bottomWidth, width - borders[3].width), y + Math.min(rightHeight, height + borders[0].width), Math.max(0, brh - borders[1].width), brv - borders[2].width).bottomRight.subdivide(0.5),
|
|
bottomLeftOuter: getCurvePoints(x, y + leftHeight, blh, blv).bottomLeft.subdivide(0.5),
|
|
bottomLeftInner: getCurvePoints(x + borders[3].width, y + leftHeight, Math.max(0, blh - borders[3].width), blv - borders[2].width).bottomLeft.subdivide(0.5)
|
|
};
|
|
}
|
|
|
|
function bezierCurve(start, startControl, endControl, end) {
|
|
var lerp = function (a, b, t) {
|
|
return {
|
|
x: a.x + (b.x - a.x) * t,
|
|
y: a.y + (b.y - a.y) * t
|
|
};
|
|
};
|
|
|
|
return {
|
|
start: start,
|
|
startControl: startControl,
|
|
endControl: endControl,
|
|
end: end,
|
|
subdivide: function(t) {
|
|
var ab = lerp(start, startControl, t),
|
|
bc = lerp(startControl, endControl, t),
|
|
cd = lerp(endControl, end, t),
|
|
abbc = lerp(ab, bc, t),
|
|
bccd = lerp(bc, cd, t),
|
|
dest = lerp(abbc, bccd, t);
|
|
return [bezierCurve(start, ab, abbc, dest), bezierCurve(dest, bccd, cd, end)];
|
|
},
|
|
curveTo: function(borderArgs) {
|
|
borderArgs.push(["bezierCurve", startControl.x, startControl.y, endControl.x, endControl.y, end.x, end.y]);
|
|
},
|
|
curveToReversed: function(borderArgs) {
|
|
borderArgs.push(["bezierCurve", endControl.x, endControl.y, startControl.x, startControl.y, start.x, start.y]);
|
|
}
|
|
};
|
|
}
|
|
|
|
function drawSide(borderData, radius1, radius2, outer1, inner1, outer2, inner2) {
|
|
var borderArgs = [];
|
|
|
|
if (radius1[0] > 0 || radius1[1] > 0) {
|
|
borderArgs.push(["line", outer1[1].start.x, outer1[1].start.y]);
|
|
outer1[1].curveTo(borderArgs);
|
|
} else {
|
|
borderArgs.push([ "line", borderData.c1[0], borderData.c1[1]]);
|
|
}
|
|
|
|
if (radius2[0] > 0 || radius2[1] > 0) {
|
|
borderArgs.push(["line", outer2[0].start.x, outer2[0].start.y]);
|
|
outer2[0].curveTo(borderArgs);
|
|
borderArgs.push(["line", inner2[0].end.x, inner2[0].end.y]);
|
|
inner2[0].curveToReversed(borderArgs);
|
|
} else {
|
|
borderArgs.push(["line", borderData.c2[0], borderData.c2[1]]);
|
|
borderArgs.push(["line", borderData.c3[0], borderData.c3[1]]);
|
|
}
|
|
|
|
if (radius1[0] > 0 || radius1[1] > 0) {
|
|
borderArgs.push(["line", inner1[1].end.x, inner1[1].end.y]);
|
|
inner1[1].curveToReversed(borderArgs);
|
|
} else {
|
|
borderArgs.push(["line", borderData.c4[0], borderData.c4[1]]);
|
|
}
|
|
|
|
return borderArgs;
|
|
}
|
|
|
|
function parseCorner(borderArgs, radius1, radius2, corner1, corner2, x, y) {
|
|
if (radius1[0] > 0 || radius1[1] > 0) {
|
|
borderArgs.push(["line", corner1[0].start.x, corner1[0].start.y]);
|
|
corner1[0].curveTo(borderArgs);
|
|
corner1[1].curveTo(borderArgs);
|
|
} else {
|
|
borderArgs.push(["line", x, y]);
|
|
}
|
|
|
|
if (radius2[0] > 0 || radius2[1] > 0) {
|
|
borderArgs.push(["line", corner2[0].start.x, corner2[0].start.y]);
|
|
}
|
|
}
|
|
|
|
function negativeZIndex(container) {
|
|
return container.cssInt("zIndex") < 0;
|
|
}
|
|
|
|
function positiveZIndex(container) {
|
|
return container.cssInt("zIndex") > 0;
|
|
}
|
|
|
|
function zIndex0(container) {
|
|
return container.cssInt("zIndex") === 0;
|
|
}
|
|
|
|
function inlineLevel(container) {
|
|
return ["inline", "inline-block", "inline-table"].indexOf(container.css("display")) !== -1;
|
|
}
|
|
|
|
function isStackingContext(container) {
|
|
return (container instanceof StackingContext);
|
|
}
|
|
|
|
function hasText(container) {
|
|
return container.node.data.trim().length > 0;
|
|
}
|
|
|
|
function noLetterSpacing(container) {
|
|
return (/^(normal|none|0px)$/.test(container.parent.css("letterSpacing")));
|
|
}
|
|
|
|
function getBorderRadiusData(container) {
|
|
return ["TopLeft", "TopRight", "BottomRight", "BottomLeft"].map(function(side) {
|
|
var value = container.css('border' + side + 'Radius');
|
|
|
|
var arr = value.split(" ");
|
|
if (arr.length <= 1) {
|
|
arr[1] = arr[0];
|
|
}
|
|
//check for percentage radius and get relative values
|
|
if(value.indexOf('%')>=0)
|
|
{
|
|
var currentVal = parseInt(arr[0]);
|
|
if(!isNaN(currentVal)){
|
|
arr[0] = container.bounds.width * currentVal / 100;
|
|
arr[1] = container.bounds.height * currentVal / 100;
|
|
}
|
|
}
|
|
return arr.map(asInt);
|
|
});
|
|
}
|
|
|
|
function renderableNode(node) {
|
|
return (node.nodeType === Node.TEXT_NODE || node.nodeType === Node.ELEMENT_NODE);
|
|
}
|
|
|
|
function isPositionedForStacking(container) {
|
|
var position = container.css("position");
|
|
var zIndex = (["absolute", "relative", "fixed"].indexOf(position) !== -1) ? container.css("zIndex") : "auto";
|
|
return zIndex !== "auto";
|
|
}
|
|
|
|
function isPositioned(container) {
|
|
return container.css("position") !== "static";
|
|
}
|
|
|
|
function isFloating(container) {
|
|
return container.css("float") !== "none";
|
|
}
|
|
|
|
function isInlineBlock(container) {
|
|
return ["inline-block", "inline-table"].indexOf(container.css("display")) !== -1;
|
|
}
|
|
|
|
function not(callback) {
|
|
var context = this;
|
|
return function() {
|
|
return !callback.apply(context, arguments);
|
|
};
|
|
}
|
|
|
|
function isElement(container) {
|
|
return container.node.nodeType === Node.ELEMENT_NODE;
|
|
}
|
|
|
|
function isPseudoElement(container) {
|
|
return container.isPseudoElement === true;
|
|
}
|
|
|
|
function isTextNode(container) {
|
|
return container.node.nodeType === Node.TEXT_NODE;
|
|
}
|
|
|
|
function zIndexSort(contexts) {
|
|
return function(a, b) {
|
|
return (a.cssInt("zIndex") + (contexts.indexOf(a) / contexts.length)) - (b.cssInt("zIndex") + (contexts.indexOf(b) / contexts.length));
|
|
};
|
|
}
|
|
|
|
function hasOpacity(container) {
|
|
return container.getOpacity() < 1;
|
|
}
|
|
|
|
function bind(callback, context) {
|
|
return function() {
|
|
return callback.apply(context, arguments);
|
|
};
|
|
}
|
|
|
|
function asInt(value) {
|
|
return parseInt(value, 10);
|
|
}
|
|
|
|
function getWidth(border) {
|
|
return border.width;
|
|
}
|
|
|
|
function nonIgnoredElement(nodeContainer) {
|
|
return (nodeContainer.node.nodeType !== Node.ELEMENT_NODE || ["SCRIPT", "HEAD", "TITLE", "OBJECT", "BR", "OPTION"].indexOf(nodeContainer.node.nodeName) === -1);
|
|
}
|
|
|
|
function flatten(arrays) {
|
|
return [].concat.apply([], arrays);
|
|
}
|
|
|
|
function stripQuotes(content) {
|
|
var first = content.substr(0, 1);
|
|
return (first === content.substr(content.length - 1) && first.match(/'|"/)) ? content.substr(1, content.length - 2) : content;
|
|
}
|
|
|
|
function getWords(characters) {
|
|
var words = [], i = 0, onWordBoundary = false, word;
|
|
while(characters.length) {
|
|
if (isWordBoundary(characters[i]) === onWordBoundary) {
|
|
word = characters.splice(0, i);
|
|
if (word.length) {
|
|
words.push(window.html2canvas.punycode.ucs2.encode(word));
|
|
}
|
|
onWordBoundary =! onWordBoundary;
|
|
i = 0;
|
|
} else {
|
|
i++;
|
|
}
|
|
|
|
if (i >= characters.length) {
|
|
word = characters.splice(0, i);
|
|
if (word.length) {
|
|
words.push(window.html2canvas.punycode.ucs2.encode(word));
|
|
}
|
|
}
|
|
}
|
|
return words;
|
|
}
|
|
|
|
function isWordBoundary(characterCode) {
|
|
return [
|
|
32, // <space>
|
|
13, // \r
|
|
10, // \n
|
|
9, // \t
|
|
45 // -
|
|
].indexOf(characterCode) !== -1;
|
|
}
|
|
|
|
function hasUnicode(string) {
|
|
return (/[^\u0000-\u00ff]/).test(string);
|
|
}
|
|
|
|
function Proxy(src, proxy, document) {
|
|
if (!proxy.url) {
|
|
return Promise.reject("No proxy configured");
|
|
}
|
|
var callback = createCallback(supportsCORS);
|
|
var url = createProxyUrl(proxy.url, src, callback);
|
|
|
|
return supportsCORS ? XHR(url) : (jsonp(document, url, callback).then(function(response) {
|
|
return decode64(response.content);
|
|
}));
|
|
}
|
|
var proxyCount = 0;
|
|
|
|
var supportsCORS = ('withCredentials' in new XMLHttpRequest());
|
|
var supportsCORSImage = ('crossOrigin' in new Image());
|
|
|
|
function ProxyURL(src, proxy, document) {
|
|
var callback = createCallback(supportsCORSImage);
|
|
var url = createProxyUrl(proxy, src, callback);
|
|
return (supportsCORSImage ? Promise.resolve(url) : jsonp(document, url, callback).then(function(response) {
|
|
return "data:" + response.type + ";base64," + response.content;
|
|
}));
|
|
}
|
|
|
|
function jsonp(document, url, callback) {
|
|
return new Promise(function(resolve, reject) {
|
|
var s = document.createElement("script");
|
|
var cleanup = function() {
|
|
delete window.html2canvas.proxy[callback];
|
|
document.body.removeChild(s);
|
|
};
|
|
window.html2canvas.proxy[callback] = function(response) {
|
|
cleanup();
|
|
resolve(response);
|
|
};
|
|
s.src = url;
|
|
s.onerror = function(e) {
|
|
cleanup();
|
|
reject(e);
|
|
};
|
|
document.body.appendChild(s);
|
|
});
|
|
}
|
|
|
|
function createCallback(useCORS) {
|
|
return !useCORS ? "html2canvas_" + Date.now() + "_" + (++proxyCount) + "_" + Math.round(Math.random() * 100000) : "";
|
|
}
|
|
|
|
function createProxyUrl(proxy, src, callback) {
|
|
var url = proxy.url + "?url=" + encodeURIComponent(src) + (callback.length ? "&callback=html2canvas.proxy." + callback : "");
|
|
if (proxy.api_key) {
|
|
url += "&api_key=" + proxy.api_key;
|
|
}
|
|
return url;
|
|
}
|
|
|
|
function ProxyImageContainer(src, proxy) {
|
|
var script = document.createElement("script");
|
|
var link = document.createElement("a");
|
|
link.href = src;
|
|
src = link.href;
|
|
this.src = src;
|
|
this.image = new Image();
|
|
var self = this;
|
|
this.promise = new Promise(function(resolve, reject) {
|
|
self.image.crossOrigin = "Anonymous";
|
|
self.image.onload = resolve;
|
|
self.image.onerror = reject;
|
|
|
|
new ProxyURL(src, proxy, document).then(function(url) {
|
|
self.image.src = url;
|
|
})['catch'](reject);
|
|
});
|
|
}
|
|
|
|
function PseudoElementContainer(node, parent, type) {
|
|
NodeContainer.call(this, node, parent);
|
|
this.isPseudoElement = true;
|
|
this.before = type === ":before";
|
|
}
|
|
|
|
PseudoElementContainer.prototype.cloneTo = function(stack) {
|
|
PseudoElementContainer.prototype.cloneTo.call(this, stack);
|
|
stack.isPseudoElement = true;
|
|
stack.before = this.before;
|
|
};
|
|
|
|
PseudoElementContainer.prototype = Object.create(NodeContainer.prototype);
|
|
|
|
PseudoElementContainer.prototype.appendToDOM = function() {
|
|
if (this.before) {
|
|
this.parent.node.insertBefore(this.node, this.parent.node.firstChild);
|
|
} else {
|
|
this.parent.node.appendChild(this.node);
|
|
}
|
|
this.parent.node.className += " " + this.getHideClass();
|
|
};
|
|
|
|
PseudoElementContainer.prototype.cleanDOM = function() {
|
|
this.node.parentNode.removeChild(this.node);
|
|
this.parent.node.className = this.parent.node.className.replace(this.getHideClass(), "");
|
|
};
|
|
|
|
PseudoElementContainer.prototype.getHideClass = function() {
|
|
return this["PSEUDO_HIDE_ELEMENT_CLASS_" + (this.before ? "BEFORE" : "AFTER")];
|
|
};
|
|
|
|
PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_BEFORE = "___html2canvas___pseudoelement_before";
|
|
PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_AFTER = "___html2canvas___pseudoelement_after";
|
|
|
|
function Renderer(width, height, images, options, document) {
|
|
this.width = width;
|
|
this.height = height;
|
|
this.images = images;
|
|
this.options = options;
|
|
this.document = document;
|
|
}
|
|
|
|
Renderer.prototype.renderImage = function(container, bounds, borderData, imageContainer) {
|
|
var paddingLeft = container.cssInt('paddingLeft'),
|
|
paddingTop = container.cssInt('paddingTop'),
|
|
paddingRight = container.cssInt('paddingRight'),
|
|
paddingBottom = container.cssInt('paddingBottom'),
|
|
borders = borderData.borders;
|
|
|
|
var width = bounds.width - (borders[1].width + borders[3].width + paddingLeft + paddingRight);
|
|
var height = bounds.height - (borders[0].width + borders[2].width + paddingTop + paddingBottom);
|
|
this.drawImage(
|
|
imageContainer,
|
|
0,
|
|
0,
|
|
imageContainer.image.width || width,
|
|
imageContainer.image.height || height,
|
|
bounds.left + paddingLeft + borders[3].width,
|
|
bounds.top + paddingTop + borders[0].width,
|
|
width,
|
|
height
|
|
);
|
|
};
|
|
|
|
Renderer.prototype.renderBackground = function(container, bounds, borderData) {
|
|
if (bounds.height > 0 && bounds.width > 0) {
|
|
this.renderBackgroundColor(container, bounds);
|
|
this.renderBackgroundImage(container, bounds, borderData);
|
|
}
|
|
};
|
|
|
|
Renderer.prototype.renderBackgroundColor = function(container, bounds) {
|
|
var color = container.color("backgroundColor");
|
|
if (!color.isTransparent()) {
|
|
this.rectangle(bounds.left, bounds.top, bounds.width, bounds.height, color);
|
|
}
|
|
};
|
|
|
|
Renderer.prototype.renderBorders = function(borders) {
|
|
borders.forEach(this.renderBorder, this);
|
|
};
|
|
|
|
Renderer.prototype.renderBorder = function(data) {
|
|
if (!data.color.isTransparent() && data.args !== null) {
|
|
this.drawShape(data.args, data.color);
|
|
}
|
|
};
|
|
|
|
Renderer.prototype.renderBackgroundImage = function(container, bounds, borderData) {
|
|
var backgroundImages = container.parseBackgroundImages();
|
|
backgroundImages.reverse().forEach(function(backgroundImage, index, arr) {
|
|
switch(backgroundImage.method) {
|
|
case "url":
|
|
var image = this.images.get(backgroundImage.args[0]);
|
|
if (image) {
|
|
this.renderBackgroundRepeating(container, bounds, image, arr.length - (index+1), borderData);
|
|
} else {
|
|
log("Error loading background-image", backgroundImage.args[0]);
|
|
}
|
|
break;
|
|
case "linear-gradient":
|
|
case "gradient":
|
|
var gradientImage = this.images.get(backgroundImage.value);
|
|
if (gradientImage) {
|
|
this.renderBackgroundGradient(gradientImage, bounds, borderData);
|
|
} else {
|
|
log("Error loading background-image", backgroundImage.args[0]);
|
|
}
|
|
break;
|
|
case "none":
|
|
break;
|
|
default:
|
|
log("Unknown background-image type", backgroundImage.args[0]);
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
Renderer.prototype.renderBackgroundRepeating = function(container, bounds, imageContainer, index, borderData) {
|
|
var size = container.parseBackgroundSize(bounds, imageContainer.image, index);
|
|
var position = container.parseBackgroundPosition(bounds, imageContainer.image, index, size);
|
|
var repeat = container.parseBackgroundRepeat(index);
|
|
switch (repeat) {
|
|
case "repeat-x":
|
|
case "repeat no-repeat":
|
|
this.backgroundRepeatShape(imageContainer, position, size, bounds, bounds.left + borderData[3], bounds.top + position.top + borderData[0], 99999, size.height, borderData);
|
|
break;
|
|
case "repeat-y":
|
|
case "no-repeat repeat":
|
|
this.backgroundRepeatShape(imageContainer, position, size, bounds, bounds.left + position.left + borderData[3], bounds.top + borderData[0], size.width, 99999, borderData);
|
|
break;
|
|
case "no-repeat":
|
|
this.backgroundRepeatShape(imageContainer, position, size, bounds, bounds.left + position.left + borderData[3], bounds.top + position.top + borderData[0], size.width, size.height, borderData);
|
|
break;
|
|
default:
|
|
this.renderBackgroundRepeat(imageContainer, position, size, {top: bounds.top, left: bounds.left}, borderData[3], borderData[0]);
|
|
break;
|
|
}
|
|
};
|
|
|
|
function StackingContext(hasOwnStacking, opacity, element, parent) {
|
|
NodeContainer.call(this, element, parent);
|
|
this.ownStacking = hasOwnStacking;
|
|
this.contexts = [];
|
|
this.children = [];
|
|
this.opacity = (this.parent ? this.parent.stack.opacity : 1) * opacity;
|
|
}
|
|
|
|
StackingContext.prototype = Object.create(NodeContainer.prototype);
|
|
|
|
StackingContext.prototype.getParentStack = function(context) {
|
|
var parentStack = (this.parent) ? this.parent.stack : null;
|
|
return parentStack ? (parentStack.ownStacking ? parentStack : parentStack.getParentStack(context)) : context.stack;
|
|
};
|
|
|
|
function Support(document) {
|
|
this.rangeBounds = this.testRangeBounds(document);
|
|
this.cors = this.testCORS();
|
|
this.svg = this.testSVG();
|
|
}
|
|
|
|
Support.prototype.testRangeBounds = function(document) {
|
|
var range, testElement, rangeBounds, rangeHeight, support = false;
|
|
|
|
if (document.createRange) {
|
|
range = document.createRange();
|
|
if (range.getBoundingClientRect) {
|
|
testElement = document.createElement('boundtest');
|
|
testElement.style.height = "123px";
|
|
testElement.style.display = "block";
|
|
document.body.appendChild(testElement);
|
|
|
|
range.selectNode(testElement);
|
|
rangeBounds = range.getBoundingClientRect();
|
|
rangeHeight = rangeBounds.height;
|
|
|
|
if (rangeHeight === 123) {
|
|
support = true;
|
|
}
|
|
document.body.removeChild(testElement);
|
|
}
|
|
}
|
|
|
|
return support;
|
|
};
|
|
|
|
Support.prototype.testCORS = function() {
|
|
return typeof((new Image()).crossOrigin) !== "undefined";
|
|
};
|
|
|
|
Support.prototype.testSVG = function() {
|
|
var img = new Image();
|
|
var canvas = document.createElement("canvas");
|
|
var ctx = canvas.getContext("2d");
|
|
img.src = "data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg'></svg>";
|
|
|
|
try {
|
|
ctx.drawImage(img, 0, 0);
|
|
canvas.toDataURL();
|
|
} catch(e) {
|
|
return false;
|
|
}
|
|
return true;
|
|
};
|
|
|
|
function SVGContainer(src) {
|
|
this.src = src;
|
|
this.image = null;
|
|
var self = this;
|
|
|
|
this.promise = this.hasFabric().then(function() {
|
|
return (self.isInline(src) ? Promise.resolve(self.inlineFormatting(src)) : XHR(src));
|
|
}).then(function(svg) {
|
|
return new Promise(function(resolve) {
|
|
html2canvas.fabric.loadSVGFromString(svg, self.createCanvas.call(self, resolve));
|
|
});
|
|
});
|
|
}
|
|
|
|
SVGContainer.prototype.hasFabric = function() {
|
|
return !html2canvas.fabric ? Promise.reject(new Error("html2canvas.svg.js is not loaded, cannot render svg")) : Promise.resolve();
|
|
};
|
|
|
|
SVGContainer.prototype.inlineFormatting = function(src) {
|
|
return (/^data:image\/svg\+xml;base64,/.test(src)) ? this.decode64(this.removeContentType(src)) : this.removeContentType(src);
|
|
};
|
|
|
|
SVGContainer.prototype.removeContentType = function(src) {
|
|
return src.replace(/^data:image\/svg\+xml(;base64)?,/,'');
|
|
};
|
|
|
|
SVGContainer.prototype.isInline = function(src) {
|
|
return (/^data:image\/svg\+xml/i.test(src));
|
|
};
|
|
|
|
SVGContainer.prototype.createCanvas = function(resolve) {
|
|
var self = this;
|
|
return function (objects, options) {
|
|
var canvas = new html2canvas.fabric.StaticCanvas('c');
|
|
self.image = canvas.lowerCanvasEl;
|
|
canvas
|
|
.setWidth(options.width)
|
|
.setHeight(options.height)
|
|
.add(html2canvas.fabric.util.groupSVGElements(objects, options))
|
|
.renderAll();
|
|
resolve(canvas.lowerCanvasEl);
|
|
};
|
|
};
|
|
|
|
SVGContainer.prototype.decode64 = function(str) {
|
|
return (typeof(window.atob) === "function") ? window.atob(str) : decode64(str);
|
|
};
|
|
|
|
/*
|
|
* base64-arraybuffer
|
|
* https://github.com/niklasvh/base64-arraybuffer
|
|
*
|
|
* Copyright (c) 2012 Niklas von Hertzen
|
|
* Licensed under the MIT license.
|
|
*/
|
|
|
|
function decode64(base64) {
|
|
var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
|
var len = base64.length, i, encoded1, encoded2, encoded3, encoded4, byte1, byte2, byte3;
|
|
|
|
var output = "";
|
|
|
|
for (i = 0; i < len; i+=4) {
|
|
encoded1 = chars.indexOf(base64[i]);
|
|
encoded2 = chars.indexOf(base64[i+1]);
|
|
encoded3 = chars.indexOf(base64[i+2]);
|
|
encoded4 = chars.indexOf(base64[i+3]);
|
|
|
|
byte1 = (encoded1 << 2) | (encoded2 >> 4);
|
|
byte2 = ((encoded2 & 15) << 4) | (encoded3 >> 2);
|
|
byte3 = ((encoded3 & 3) << 6) | encoded4;
|
|
if (encoded3 === 64) {
|
|
output += String.fromCharCode(byte1);
|
|
} else if (encoded4 === 64 || encoded4 === -1) {
|
|
output += String.fromCharCode(byte1, byte2);
|
|
} else{
|
|
output += String.fromCharCode(byte1, byte2, byte3);
|
|
}
|
|
}
|
|
|
|
return output;
|
|
}
|
|
|
|
function SVGNodeContainer(node, native) {
|
|
this.src = node;
|
|
this.image = null;
|
|
var self = this;
|
|
|
|
this.promise = native ? new Promise(function(resolve, reject) {
|
|
self.image = new Image();
|
|
self.image.onload = resolve;
|
|
self.image.onerror = reject;
|
|
self.image.src = "data:image/svg+xml," + (new XMLSerializer()).serializeToString(node);
|
|
if (self.image.complete === true) {
|
|
resolve(self.image);
|
|
}
|
|
}) : this.hasFabric().then(function() {
|
|
return new Promise(function(resolve) {
|
|
html2canvas.fabric.parseSVGDocument(node, self.createCanvas.call(self, resolve));
|
|
});
|
|
});
|
|
}
|
|
|
|
SVGNodeContainer.prototype = Object.create(SVGContainer.prototype);
|
|
|
|
function TextContainer(node, parent) {
|
|
NodeContainer.call(this, node, parent);
|
|
}
|
|
|
|
TextContainer.prototype = Object.create(NodeContainer.prototype);
|
|
|
|
TextContainer.prototype.applyTextTransform = function() {
|
|
this.node.data = this.transform(this.parent.css("textTransform"));
|
|
};
|
|
|
|
TextContainer.prototype.transform = function(transform) {
|
|
var text = this.node.data;
|
|
switch(transform){
|
|
case "lowercase":
|
|
return text.toLowerCase();
|
|
case "capitalize":
|
|
return text.replace(/(^|\s|:|-|\(|\))([a-z])/g, capitalize);
|
|
case "uppercase":
|
|
return text.toUpperCase();
|
|
default:
|
|
return text;
|
|
}
|
|
};
|
|
|
|
function capitalize(m, p1, p2) {
|
|
if (m.length > 0) {
|
|
return p1 + p2.toUpperCase();
|
|
}
|
|
}
|
|
|
|
function WebkitGradientContainer(imageData) {
|
|
GradientContainer.apply(this, arguments);
|
|
this.type = (imageData.args[0] === "linear") ? this.TYPES.LINEAR : this.TYPES.RADIAL;
|
|
}
|
|
|
|
WebkitGradientContainer.prototype = Object.create(GradientContainer.prototype);
|
|
|
|
function XHR(url) {
|
|
return new Promise(function(resolve, reject) {
|
|
var xhr = new XMLHttpRequest();
|
|
xhr.open('GET', url);
|
|
|
|
xhr.onload = function() {
|
|
if (xhr.status === 200) {
|
|
resolve(xhr.responseText);
|
|
} else {
|
|
reject(new Error(xhr.statusText));
|
|
}
|
|
};
|
|
|
|
xhr.onerror = function() {
|
|
reject(new Error("Network Error"));
|
|
};
|
|
|
|
xhr.send();
|
|
});
|
|
}
|
|
|
|
function CanvasRenderer(width, height) {
|
|
Renderer.apply(this, arguments);
|
|
this.canvas = this.options.canvas || this.document.createElement("canvas");
|
|
if (!this.options.canvas) {
|
|
this.canvas.width = width;
|
|
this.canvas.height = height;
|
|
}
|
|
this.ctx = this.canvas.getContext("2d");
|
|
this.taintCtx = this.document.createElement("canvas").getContext("2d");
|
|
this.ctx.textBaseline = "bottom";
|
|
this.variables = {};
|
|
log("Initialized CanvasRenderer with size", width, "x", height);
|
|
}
|
|
|
|
CanvasRenderer.prototype = Object.create(Renderer.prototype);
|
|
|
|
CanvasRenderer.prototype.setFillStyle = function(fillStyle) {
|
|
this.ctx.fillStyle = typeof(fillStyle) === "object" && !!fillStyle.isColor ? fillStyle.toString() : fillStyle;
|
|
return this.ctx;
|
|
};
|
|
|
|
CanvasRenderer.prototype.rectangle = function(left, top, width, height, color) {
|
|
this.setFillStyle(color).fillRect(left, top, width, height);
|
|
};
|
|
|
|
CanvasRenderer.prototype.circle = function(left, top, size, color) {
|
|
this.setFillStyle(color);
|
|
this.ctx.beginPath();
|
|
this.ctx.arc(left + size / 2, top + size / 2, size / 2, 0, Math.PI*2, true);
|
|
this.ctx.closePath();
|
|
this.ctx.fill();
|
|
};
|
|
|
|
CanvasRenderer.prototype.circleStroke = function(left, top, size, color, stroke, strokeColor) {
|
|
this.circle(left, top, size, color);
|
|
this.ctx.strokeStyle = strokeColor.toString();
|
|
this.ctx.stroke();
|
|
};
|
|
|
|
CanvasRenderer.prototype.drawShape = function(shape, color) {
|
|
this.shape(shape);
|
|
this.setFillStyle(color).fill();
|
|
};
|
|
|
|
CanvasRenderer.prototype.taints = function(imageContainer) {
|
|
if (imageContainer.tainted === null) {
|
|
this.taintCtx.drawImage(imageContainer.image, 0, 0);
|
|
try {
|
|
this.taintCtx.getImageData(0, 0, 1, 1);
|
|
imageContainer.tainted = false;
|
|
} catch(e) {
|
|
this.taintCtx = document.createElement("canvas").getContext("2d");
|
|
imageContainer.tainted = true;
|
|
}
|
|
}
|
|
|
|
return imageContainer.tainted;
|
|
};
|
|
|
|
CanvasRenderer.prototype.drawImage = function(imageContainer, sx, sy, sw, sh, dx, dy, dw, dh) {
|
|
if (!this.taints(imageContainer) || this.options.allowTaint) {
|
|
this.ctx.drawImage(imageContainer.image, sx, sy, sw, sh, dx, dy, dw, dh);
|
|
}
|
|
};
|
|
|
|
CanvasRenderer.prototype.clip = function(shapes, callback, context) {
|
|
this.ctx.save();
|
|
shapes.filter(hasEntries).forEach(function(shape) {
|
|
this.shape(shape).clip();
|
|
}, this);
|
|
callback.call(context);
|
|
this.ctx.restore();
|
|
};
|
|
|
|
CanvasRenderer.prototype.shape = function(shape) {
|
|
this.ctx.beginPath();
|
|
shape.forEach(function(point, index) {
|
|
if (point[0] === "rect") {
|
|
this.ctx.rect.apply(this.ctx, point.slice(1));
|
|
} else {
|
|
this.ctx[(index === 0) ? "moveTo" : point[0] + "To" ].apply(this.ctx, point.slice(1));
|
|
}
|
|
}, this);
|
|
this.ctx.closePath();
|
|
return this.ctx;
|
|
};
|
|
|
|
CanvasRenderer.prototype.font = function(color, style, variant, weight, size, family) {
|
|
this.setFillStyle(color).font = [style, variant, weight, size, family].join(" ").split(",")[0];
|
|
};
|
|
|
|
CanvasRenderer.prototype.fontShadow = function(color, offsetX, offsetY, blur) {
|
|
this.setVariable("shadowColor", color.toString())
|
|
.setVariable("shadowOffsetY", offsetX)
|
|
.setVariable("shadowOffsetX", offsetY)
|
|
.setVariable("shadowBlur", blur);
|
|
};
|
|
|
|
CanvasRenderer.prototype.clearShadow = function() {
|
|
this.setVariable("shadowColor", "rgba(0,0,0,0)");
|
|
};
|
|
|
|
CanvasRenderer.prototype.setOpacity = function(opacity) {
|
|
this.ctx.globalAlpha = opacity;
|
|
};
|
|
|
|
CanvasRenderer.prototype.setTransform = function(transform) {
|
|
this.ctx.translate(transform.origin[0], transform.origin[1]);
|
|
this.ctx.transform.apply(this.ctx, transform.matrix);
|
|
this.ctx.translate(-transform.origin[0], -transform.origin[1]);
|
|
};
|
|
|
|
CanvasRenderer.prototype.setVariable = function(property, value) {
|
|
if (this.variables[property] !== value) {
|
|
this.variables[property] = this.ctx[property] = value;
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
CanvasRenderer.prototype.text = function(text, left, bottom) {
|
|
this.ctx.fillText(text, left, bottom);
|
|
};
|
|
|
|
CanvasRenderer.prototype.backgroundRepeatShape = function(imageContainer, backgroundPosition, size, bounds, left, top, width, height, borderData) {
|
|
var shape = [
|
|
["line", Math.round(left), Math.round(top)],
|
|
["line", Math.round(left + width), Math.round(top)],
|
|
["line", Math.round(left + width), Math.round(height + top)],
|
|
["line", Math.round(left), Math.round(height + top)]
|
|
];
|
|
this.clip([shape], function() {
|
|
this.renderBackgroundRepeat(imageContainer, backgroundPosition, size, bounds, borderData[3], borderData[0]);
|
|
}, this);
|
|
};
|
|
|
|
CanvasRenderer.prototype.renderBackgroundRepeat = function(imageContainer, backgroundPosition, size, bounds, borderLeft, borderTop) {
|
|
var offsetX = Math.round(bounds.left + backgroundPosition.left + borderLeft), offsetY = Math.round(bounds.top + backgroundPosition.top + borderTop);
|
|
this.setFillStyle(this.ctx.createPattern(this.resizeImage(imageContainer, size), "repeat"));
|
|
this.ctx.translate(offsetX, offsetY);
|
|
this.ctx.fill();
|
|
this.ctx.translate(-offsetX, -offsetY);
|
|
};
|
|
|
|
CanvasRenderer.prototype.renderBackgroundGradient = function(gradientImage, bounds) {
|
|
if (gradientImage instanceof LinearGradientContainer) {
|
|
var gradient = this.ctx.createLinearGradient(
|
|
bounds.left + bounds.width * gradientImage.x0,
|
|
bounds.top + bounds.height * gradientImage.y0,
|
|
bounds.left + bounds.width * gradientImage.x1,
|
|
bounds.top + bounds.height * gradientImage.y1);
|
|
gradientImage.colorStops.forEach(function(colorStop) {
|
|
gradient.addColorStop(colorStop.stop, colorStop.color.toString());
|
|
});
|
|
this.rectangle(bounds.left, bounds.top, bounds.width, bounds.height, gradient);
|
|
}
|
|
};
|
|
|
|
CanvasRenderer.prototype.resizeImage = function(imageContainer, size) {
|
|
var image = imageContainer.image;
|
|
if(image.width === size.width && image.height === size.height) {
|
|
return image;
|
|
}
|
|
|
|
var ctx, canvas = document.createElement('canvas');
|
|
canvas.width = size.width;
|
|
canvas.height = size.height;
|
|
ctx = canvas.getContext("2d");
|
|
ctx.drawImage(image, 0, 0, image.width, image.height, 0, 0, size.width, size.height );
|
|
return canvas;
|
|
};
|
|
|
|
function hasEntries(array) {
|
|
return array.length > 0;
|
|
}
|
|
|
|
}).call({}, typeof(window) !== "undefined" ? window : undefined, typeof(document) !== "undefined" ? document : undefined);
|