最近在做一个移动端的项目，简单记录一下该功能。
需求是这样的：
将带有二维码和一些介绍信息 动态生成一张图片 比如说是
生成这样的图片，文字、主图、价格、二维码都是不固定的。
对于这个需求，看见微信上已经有很多了，但是没发现认识的人有做过这样子的需求。
因此百度了很多。
最后选择了 用 html2canvas 插件
参考：https://segmentfault.com/a/1190000011425316
https://yq.aliyun.com/ziliao/4416
一、先将HTML元素生成canvas
二、将canvas 转成图片
html2canvas.js 要修改源码
参考：（突然找不到链接了 - -）
<!doctype html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"> <meta name="apple-wap-web-app-capable" content="yes"> <meta name="apple-wap-web-app-status-bar-style" content="black-translucent"> <title>demo</title> <style> *{margin: 0;padding: 0} .dy-store-share{width:296px;height: auto;padding:70px 0 30px;margin:0 auto; border-radius: 10px;position: relative;} .dy-store-html2{width: 296px; height:440px;background: #fff;margin: 0 auto; background:-webkit-linear-gradient(left, #f4f4f5, #fff , #f4f4f5); border-radius: 8px; } .storeShare-title{display:block;width: 3.5rem;margin:0 auto;padding-top: 10px; line-height:50px;font-size:1rem;color:#fe6d1f;text-align: center;position: relative} .storeShare-head{display: block;width: 65px;height: 65px;border-radius: 37px;margin:4px auto 3px;background:#eee;overflow: hidden;} .storeShare-head img{width: 100%;height: auto} .storeShare-name{line-height: 30px;text-align: center;font-size: .65rem;color: #999} .storeShare-txt{line-height: 30px;text-align: center;font-size: .7rem;margin-bottom: 12px;} .storeShare-txt2{padding-bottom: 20px;font-size: .625rem} .storeShare-codebox {width:140px;height:140px;margin: 6px auto;padding:20px;} .storeShare-codebox img{width: 100%} #imagesShare{position: absolute;top: 0;left: 0;width: 296px;height: 410px;overflow: hidden;margin-top: 70px;} #imagesShare canvas{width: 100%;height: 100%} .shareImgBox{position: absolute;top: 0;left: 0;padding-top: 70px} .shareImgBox img{width: 100%;height: 100%} </style> </head> <body> <div class="dy-store-share"> <div class="dy-store-html2" id="content"> <div class="storeShare-title"> 邀请卡</div> <div class="storeShare-head"><img src="images/pic.jpg" alt=""></div> <p class="storeShare-name">这里是我的名字</p> <p class="storeShare-txt">邀你一起参加活动</p> <div class="storeShare-codebox"><img src="images/pic.jpg" alt=""></div> <p class="storeShare-txt storeShare-txt2">长按识别二维码</p> </div> <div id="imagesShare"></div> <div class="shareImgBox" ><img src="" id="shareImgId" alt=""></div> </div> <script src="js/jquery-1.7.1.min.js"></script> <script src="js/html2canvas.js"></script> <script> var shareContent = document.getElementById("content"); var width = shareContent.offsetWidth; //获取dom 宽度 var height = shareContent.offsetHeight; //获取dom 高度 var canvas = document.createElement("canvas"); //创建一个canvas节点 var scale = 3; //定义任意放大倍数 支持小数 var offsetTop = shareContent.offsetTop; canvas.width = width * scale; //定义canvas 宽度 * 缩放 canvas.height = (height + offsetTop) * scale; //定义canvas（高度 +偏移量 ）*缩放 canvas.getContext("2d").scale(scale, scale); //获取context,设置scale var opts = { scale: scale, // 添加的scale 参数 canvas: canvas, //自定义 canvas // logging: true, //日志开关，便于查看html2canvas的内部执行流程 width, //dom 原始宽度 height: height, useCORS: true, // 【重要】开启跨域配置 allowTaint: true, taintTest: false }; html2canvas(shareContent,opts ).then(function (canvas) { //关闭锯齿 var context = canvas.getContext('2d'); context.mozImageSmoothingEnabled = false; context.webkitImageSmoothingEnabled = false; context.msImageSmoothingEnabled = false; context.imageSmoothingEnabled = false; //添加属性 canvas.setAttribute('id','canvas'); //读取属性值 document.getElementById('imagesShare').innerHTML = ''; document.getElementById('imagesShare').appendChild(canvas); var imgsrcc = document.getElementById("shareImgId"); imgsrcc.src = canvas.toDataURL("image/png"); }) </script> </body> </html>
html2canvas.js （修改后）
/* html2canvas 0.5.0-beta3 <http://html2canvas.hertzen.com> Copyright (c) 2016 Niklas von Hertzen Released under License */ !function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.html2canvas=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){ (function (global){ /*! http://mths.be/punycode v1.2.4 by @mathias */ ;(function(root) { /** Detect free variables */ var freeExports = typeof exports == 'object' && exports; var freeModule = typeof module == 'object' && module && module.exports == freeExports && module; var freeGlobal = typeof global == 'object' && global; if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) { root = freeGlobal; } /** * The `punycode` object. * @name punycode * @type Object */ var punycode, /** Highest positive signed 32-bit float value */ maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1 /** Bootstring parameters */ base = 36, tMin = 1, tMax = 26, skew = 38, damp = 700, initialBias = 72, initialN = 128, // 0x80 delimiter = '-', // 'x2D' /** Regular expressions */ regexPunycode = /^xn--/, regexNonASCII = /[^ -~]/, // unprintable ASCII chars + non-ASCII chars regexSeparators = /x2E|u3002|uFF0E|uFF61/g, // RFC 3490 separators /** Error messages */ errors = { 'overflow': 'Overflow: input needs wider integers to process', 'not-basic': 'Illegal input >= 0x80 (not a basic code point)', 'invalid-input': 'Invalid input' }, /** Convenience shortcuts */ baseMinusTMin = base - tMin, floor = Math.floor, stringFromCharCode = String.fromCharCode, /** Temporary variable */ key; /*--------------------------------------------------------------------------*/ /** * A generic error utility function. * @private * @param {String} type The error type. * @returns {Error} Throws a `RangeError` with the applicable error message. */ function error(type) { throw RangeError(errors[type]); } /** * A generic `Array#map` utility function. * @private * @param {Array} array The array to iterate over. * @param {Function} callback The function that gets called for every array * item. * @returns {Array} A new array of values returned by the callback function. */ function map(array, fn) { var length = array.length; while (length--) { array[length] = fn(array[length]); } return array; } /** * A simple `Array#map`-like wrapper to work with domain name strings. * @private * @param {String} domain The domain name. * @param {Function} callback The function that gets called for every * character. * @returns {Array} A new string of characters returned by the callback * function. */ function mapDomain(string, fn) { return map(string.split(regexSeparators), fn).join('.'); } /** * Creates an array containing the numeric code points of each Unicode * character in the string. While JavaScript uses UCS-2 internally, * this function will convert a pair of surrogate halves (each of which * UCS-2 exposes as separate characters) into a single code point, * matching UTF-16. * @see `punycode.ucs2.encode` * @see <http://mathiasbynens.be/notes/javascript-encoding> * @memberOf punycode.ucs2 * @name decode * @param {String} string The Unicode input string (UCS-2). * @returns {Array} The new array of code points. */ function ucs2decode(string) { var output = [], counter = 0, length = string.length, value, extra; while (counter < length) { value = string.charCodeAt(counter++); if (value >= 0xD800 && value <= 0xDBFF && counter < length) { // high surrogate, and there is a next character extra = string.charCodeAt(counter++); if ((extra & 0xFC00) == 0xDC00) { // low surrogate output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000); } else { // unmatched surrogate; only append this code unit, in case the next // code unit is the high surrogate of a surrogate pair output.push(value); counter--; } } else { output.push(value); } } return output; } /** * Creates a string based on an array of numeric code points. * @see `punycode.ucs2.decode` * @memberOf punycode.ucs2 * @name encode * @param {Array} codePoints The array of numeric code points. * @returns {String} The new Unicode string (UCS-2). */ function ucs2encode(array) { return map(array, function(value) { var output = ''; if (value > 0xFFFF) { value -= 0x10000; output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800); value = 0xDC00 | value & 0x3FF; } output += stringFromCharCode(value); return output; }).join(''); } /** * Converts a basic code point into a digit/integer. * @see `digitToBasic()` * @private * @param {Number} codePoint The basic numeric code point value. * @returns {Number} The numeric value of a basic code point (for use in * representing integers) in the range `0` to `base - 1`, or `base` if * the code point does not represent a value. */ function basicToDigit(codePoint) { if (codePoint - 48 < 10) { return codePoint - 22; } if (codePoint - 65 < 26) { return codePoint - 65; } if (codePoint - 97 < 26) { return codePoint - 97; } return base; } /** * Converts a digit/integer into a basic code point. * @see `basicToDigit()` * @private * @param {Number} digit The numeric value of a basic code point. * @returns {Number} The basic code point whose value (when used for * representing integers) is `digit`, which needs to be in the range * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is * used; else, the lowercase form is used. The behavior is undefined * if `flag` is non-zero and `digit` has no uppercase form. */ function digitToBasic(digit, flag) { // 0..25 map to ASCII a..z or A..Z // 26..35 map to ASCII 0..9 return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5); } /** * Bias adaptation function as per section 3.4 of RFC 3492. * http://tools.ietf.org/html/rfc3492#section-3.4 * @private */ function adapt(delta, numPoints, firstTime) { var k = 0; delta = firstTime ? floor(delta / damp) : delta >> 1; delta += floor(delta / numPoints); for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) { delta = floor(delta / baseMinusTMin); } return floor(k + (baseMinusTMin + 1) * delta / (delta + skew)); } /** * Converts a Punycode string of ASCII-only symbols to a string of Unicode * symbols. * @memberOf punycode * @param {String} input The Punycode string of ASCII-only symbols. * @returns {String} The resulting string of Unicode symbols. */ function decode(input) { // Don't use UCS-2 var output = [], inputLength = input.length, out, i = 0, n = initialN, bias = initialBias, basic, j, index, oldi, w, k, digit, t, /** Cached calculation results */ baseMinusT; // Handle the basic code points: let `basic` be the number of input code // points before the last delimiter, or `0` if there is none, then copy // the first basic code points to the output. basic = input.lastIndexOf(delimiter); if (basic < 0) { basic = 0; } for (j = 0; j < basic; ++j) { // if it's not a basic code point if (input.charCodeAt(j) >= 0x80) { error('not-basic'); } output.push(input.charCodeAt(j)); } // Main decoding loop: start just after the last delimiter if any basic code // points were copied; start at the beginning otherwise. for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) { // `index` is the index of the next character to be consumed. // Decode a generalized variable-length integer into `delta`, // which gets added to `i`. The overflow checking is easier // if we increase `i` as we go, then subtract off its starting // value at the end to obtain `delta`. for (oldi = i, w = 1, k = base; /* no condition */; k += base) { if (index >= inputLength) { error('invalid-input'); } digit = basicToDigit(input.charCodeAt(index++)); if (digit >= base || digit > floor((maxInt - i) / w)) { error('overflow'); } i += digit * w; t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias); if (digit < t) { break; } baseMinusT = base - t; if (w > floor(maxInt / baseMinusT)) { error('overflow'); } w *= baseMinusT; } out = output.length + 1; bias = adapt(i - oldi, out, oldi == 0); // `i` was supposed to wrap around from `out` to `0`, // incrementing `n` each time, so we'll fix that now: if (floor(i / out) > maxInt - n) { error('overflow'); } n += floor(i / out); i %= out; // Insert `n` at position `i` of the output output.splice(i++, 0, n); } return ucs2encode(output); } /** * Converts a string of Unicode symbols to a Punycode string of ASCII-only * symbols. * @memberOf punycode * @param {String} input The string of Unicode symbols. * @returns {String} The resulting Punycode string of ASCII-only symbols. */ function encode(input) { var n, delta, handledCPCount, basicLength, bias, j, m, q, k, t, currentValue, output = [], /** `inputLength` will hold the number of code points in `input`. */ inputLength, /** Cached calculation results */ handledCPCountPlusOne, baseMinusT, qMinusT; // Convert the input in UCS-2 to Unicode input = ucs2decode(input); // Cache the length inputLength = input.length; // Initialize the state 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 to Unicode. Only the * Punycoded parts of the domain name 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} domain The Punycode domain name to convert to Unicode. * @returns {String} The Unicode representation of the given Punycode * string. */ function toUnicode(domain) { return mapDomain(domain, function(string) { return regexPunycode.test(string) ? decode(string.slice(4).toLowerCase()) : string; }); } /** * Converts a Unicode string representing a domain name 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} domain The domain name to convert, as a Unicode string. * @returns {String} The Punycode representation of the given domain name. */ function toASCII(domain) { return mapDomain(domain, 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': '1.2.4', /** * An object of methods to convert from JavaScript's internal character * representation (UCS-2) to Unicode code points, and back. * @see <http://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 && !freeExports.nodeType) { if (freeModule) { // 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)); }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) },{}],2:[function(_dereq_,module,exports){ var log = _dereq_('./log'); function restoreOwnerScroll(ownerDocument, x, y) { if (ownerDocument.defaultView && (x !== ownerDocument.defaultView.pageXOffset || y !== ownerDocument.defaultView.pageYOffset)) { ownerDocument.defaultView.scrollTo(x, y); } } function cloneCanvasContents(canvas, clonedCanvas) { try { 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); } } function cloneNode(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(cloneNode(child, javascriptEnabled)); } child = child.nextSibling; } if (node.nodeType === 1) { clone._scrollTop = node.scrollTop; clone._scrollLeft = node.scrollLeft; if (node.nodeName === "CANVAS") { cloneCanvasContents(node, clone); } else if (node.nodeName === "TEXTAREA" || node.nodeName === "SELECT") { clone.value = node.value; } } return clone; } function initNode(node) { if (node.nodeType === 1) { node.scrollTop = node._scrollTop; node.scrollLeft = node._scrollLeft; var child = node.firstChild; while(child) { initNode(child); child = child.nextSibling; } } } module.exports = function(ownerDocument, containerDocument, width, height, options, x ,y) { var documentElement = cloneNode(ownerDocument.documentElement, options.javascriptEnabled); 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; /* 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) { initNode(documentClone.documentElement); clearInterval(interval); if (options.type === "view") { container.contentWindow.scrollTo(x, y); if ((/(iPad|iPhone|iPod)/g).test(navigator.userAgent) && (container.contentWindow.scrollY !== y || container.contentWindow.scrollX !== x)) { documentClone.documentElement.style.top = (-y) + "px"; documentClone.documentElement.style.left = (-x) + "px"; documentClone.documentElement.style.position = 'absolute'; } } 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(documentClone.adoptNode(documentElement), documentClone.documentElement); documentClone.close(); }); }; },{"./log":13}],3:[function(_dereq_,module,exports){ // 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(s*(d{1,3})s*,s*(d{1,3})s*,s*(d{1,3})s*)$/; Color.prototype.rgb = function(value) { var match = null; if ((match = value.match(_rgb)) !== null) { this.r = Number(match[1]); this.g = Number(match[2]); this.b = Number(match[3]); } return match !== null; }; var _rgba = /^rgba(s*(d{1,3})s*,s*(d{1,3})s*,s*(d{1,3})s*,s*(d?.?d+)s*)$/; 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) { value = value.toLowerCase(); var color = colors[value]; if (color) { this.r = color[0]; this.g = color[1]; this.b = color[2]; } else if (value === "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] }; module.exports = Color; },{}],4:[function(_dereq_,module,exports){ var Support = _dereq_('./support'); var CanvasRenderer = _dereq_('./renderers/canvas'); var ImageLoader = _dereq_('./imageloader'); var NodeParser = _dereq_('./nodeparser'); var NodeContainer = _dereq_('./nodecontainer'); var log = _dereq_('./log'); var utils = _dereq_('./utils'); var createWindowClone = _dereq_('./clone'); var loadUrlDocument = _dereq_('./proxy').loadUrlDocument; var getBounds = utils.getBounds; var html2canvasNodeAttribute = "data-html2canvas-node"; var html2canvasCloneIndex = 0; function html2canvas(nodeList, options) { var index = html2canvasCloneIndex++; options = options || {}; if (options.logging) { log.options.logging = true; log.options.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); width = options.width != null ? options.width : node.ownerDocument.defaultView.innerWidth; height = options.height != null ? options.height : node.ownerDocument.defaultView.innerHeight; return renderDocument(node.ownerDocument, options, width, height, 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; }); } html2canvas.CanvasRenderer = CanvasRenderer; html2canvas.NodeContainer = NodeContainer; html2canvas.log = log; html2canvas.utils = utils; var html2canvasExport = (typeof(document) === "undefined" || typeof(Object.create) !== "function" || typeof(document.createElement("canvas").getContext) !== "function") ? function() { return Promise.reject("No canvas support"); } : html2canvas; module.exports = html2canvasExport; if (typeof(define) === 'function' && define.amd) { define('html2canvas', [], function() { return html2canvasExport; }); } 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); console.log() var renderer = new options.renderer(width, height, imageLoader, options, node.ownerDocument); 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, { 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) { canvas = renderer.canvas; }else if(options.scale && options.canvas !=null){ log("放大canvas",options.canvas); var scale = options.scale || 1; console.log(bounds.top *scale) canvas = crop(renderer.canvas, { bounds.width * scale, height:bounds.height * scale, top: bounds.top *scale, left: bounds.left *scale, x: 0, y: 0}); // console.log(canvas.width) } else { canvas = crop(renderer.canvas, { options.width != null ? options.width : bounds.width, height: options.height != null ? options.height : bounds.height, top: bounds.top, left: bounds.left, x: 0, y: 0}); } 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; var width = x2-x1; var height = y2-y1; log("Cropping canvas at:", "left:", bounds.left, "top:", bounds.top, "", width, "height:", height); log("Resulting crop with width", bounds.width, "and height", bounds.height, "with x", x1, "and y", y1); croppedCanvas.getContext("2d").drawImage(canvas, x1, y1, width, height, bounds.x, bounds.y, width, height); 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 absoluteUrl(url) { var link = document.createElement("a"); link.href = url; link.href = link.href; return link; } },{"./clone":2,"./imageloader":11,"./log":13,"./nodecontainer":14,"./nodeparser":15,"./proxy":16,"./renderers/canvas":20,"./support":22,"./utils":26}],5:[function(_dereq_,module,exports){ var log = _dereq_('./log'); var smallImage = _dereq_('./utils').smallImage; 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); } }); } } module.exports = DummyImageContainer; },{"./log":13,"./utils":26}],6:[function(_dereq_,module,exports){ var smallImage = _dereq_('./utils').smallImage; 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; } module.exports = Font; },{"./utils":26}],7:[function(_dereq_,module,exports){ var Font = _dereq_('./font'); 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]; }; module.exports = FontMetrics; },{"./font":6}],8:[function(_dereq_,module,exports){ var utils = _dereq_('./utils'); var getBounds = utils.getBounds; var loadUrlDocument = _dereq_('./proxy').loadUrlDocument; 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) { var html2canvas = _dereq_('./core'); return html2canvas(container.contentWindow.document.documentElement, {type: 'view', 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); }; module.exports = FrameContainer; },{"./core":4,"./proxy":16,"./utils":26}],9:[function(_dereq_,module,exports){ 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.TYPES = { LINEAR: 1, RADIAL: 2 }; // TODO: support hsl[a], negative %/length values // TODO: support <angle> (e.g. -?d{1,3}(?:.d+)deg, etc. : https://developer.mozilla.org/docs/Web/CSS/angle ) GradientContainer.REGEXP_COLORSTOP = /^s*(rgba?(s*d{1,3},s*d{1,3},s*d{1,3}(?:,s*[0-9.]+)?s*)|[a-z]{3,20}|#[a-f0-9]{3,6})(?:s+(d{1,3}(?:.d+)?)(%|px)?)?(?:s|$)/i; module.exports = GradientContainer; },{}],10:[function(_dereq_,module,exports){ 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); } }); } module.exports = ImageContainer; },{}],11:[function(_dereq_,module,exports){ var log = _dereq_('./log'); var ImageContainer = _dereq_('./imagecontainer'); var DummyImageContainer = _dereq_('./dummyimagecontainer'); var ProxyImageContainer = _dereq_('./proxyimagecontainer'); var FrameContainer = _dereq_('./framecontainer'); var SVGContainer = _dereq_('./svgcontainer'); var SVGNodeContainer = _dereq_('./svgnodecontainer'); var LinearGradientContainer = _dereq_('./lineargradientcontainer'); var WebkitGradientContainer = _dereq_('./webkitgradientcontainer'); var bind = _dereq_('./utils').bind; 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; }; module.exports = ImageLoader; },{"./dummyimagecontainer":5,"./framecontainer":8,"./imagecontainer":10,"./lineargradientcontainer":12,"./log":13,"./proxyimagecontainer":17,"./svgcontainer":23,"./svgnodecontainer":24,"./utils":26,"./webkitgradientcontainer":27}],12:[function(_dereq_,module,exports){ var GradientContainer = _dereq_('./gradientcontainer'); var Color = _dereq_('./color'); function LinearGradientContainer(imageData) { GradientContainer.apply(this, arguments); this.type = GradientContainer.TYPES.LINEAR; var hasDirection = LinearGradientContainer.REGEXP_DIRECTION.test( imageData.args[0] ) || !GradientContainer.REGEXP_COLORSTOP.test( imageData.args[0] ); if (hasDirection) { imageData.args[0].split(/s+/).reverse().forEach(function(position, index) { 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; case "center": break; // centered by default // Firefox internally converts position keywords to percentages: // http://www.w3.org/TR/2010/WD-CSS2-20101207/colors.html#propdef-background-position default: // percentage or absolute length // TODO: support absolute start point positions (e.g., use bounds to convert px to a ratio) var ratio = parseFloat(position, 10) * 1e-2; if (isNaN(ratio)) { // invalid or unhandled value break; } if (index === 0) { this.y0 = ratio; this.y1 = 1 - this.y0; } else { this.x0 = ratio; this.x1 = 1 - this.x0; } break; } }, this); } else { this.y0 = 0; this.y1 = 1; } this.colorStops = imageData.args.slice(hasDirection ? 1 : 0).map(function(colorStop) { var colorStopMatch = colorStop.match(GradientContainer.REGEXP_COLORSTOP); var value = +colorStopMatch[2]; var unit = value === 0 ? "%" : colorStopMatch[3]; // treat "0" as "0%" return { color: new Color(colorStopMatch[1]), // TODO: support absolute stop positions (e.g., compute gradient line length & convert px to ratio) stop: unit === "%" ? value / 100 : null }; }); 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; } // calculates and fills-in explicit stop positions when omitted from rule 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); // TODO: support <angle> (e.g. -?d{1,3}(?:.d+)deg, etc. : https://developer.mozilla.org/docs/Web/CSS/angle ) LinearGradientContainer.REGEXP_DIRECTION = /^s*(?:to|left|right|top|bottom|center|d{1,3}(?:.d+)?%?)(?:s|$)/i; module.exports = LinearGradientContainer; },{"./color":3,"./gradientcontainer":9}],13:[function(_dereq_,module,exports){ var logger = function() { if (logger.options.logging && window.console && window.console.log) { Function.prototype.bind.call(window.console.log, (window.console)).apply(window.console, [(Date.now() - logger.options.start) + "ms", "html2canvas:"].concat([].slice.call(arguments, 0))); } }; logger.options = {logging: false}; module.exports = logger; },{}],14:[function(_dereq_,module,exports){ var Color = _dereq_('./color'); var utils = _dereq_('./utils'); var getBounds = utils.getBounds; var parseBackgrounds = utils.parseBackgrounds; var offsetBounds = utils.offsetBounds; 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], isPercentage(value[0]) ? 'auto' : 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') ? { bounds.height * currentRatio, height: bounds.height} : { 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, 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|matrix3d)((.+))/; 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()); }); } else if (match && match[1] === "matrix3d") { var matrix3d = match[2].split(",").map(function(s) { return parseFloat(s.trim()); }); return [matrix3d[0], matrix3d[1], matrix3d[4], matrix3d[5], matrix3d[12], matrix3d[13]]; } } function isPercentage(value) { return value.toString().indexOf("%") !== -1; } function removePx(str) { return str.replace("px", ""); } function asFloat(str) { return parseFloat(str); } module.exports = NodeContainer; },{"./color":3,"./utils":26}],15:[function(_dereq_,module,exports){ var log = _dereq_('./log'); var punycode = _dereq_('punycode'); var NodeContainer = _dereq_('./nodecontainer'); var TextContainer = _dereq_('./textcontainer'); var PseudoElementContainer = _dereq_('./pseudoelementcontainer'); var FontMetrics = _dereq_('./fontmetrics'); var Color = _dereq_('./color'); var StackingContext = _dereq_('./stackingcontext'); var utils = _dereq_('./utils'); var bind = utils.bind; var getBounds = utils.getBounds; var parseBackgrounds = utils.parseBackgrounds; var offsetBounds = utils.offsetBounds; 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 = { 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'), 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 = punycode.ucs2.decode(container.node.data); var textList = (!this.options.letterRendering || noLetterSpacing(container)) && !hasUnicode(container.node.data) ? getWords(characters) : characters.map(function(character) { return 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); 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 { 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] < width / 2 ? borderRadius[0][0] : width / 2, tlv = borderRadius[0][1] < height / 2 ? borderRadius[0][1] : height / 2, trh = borderRadius[1][0] < width / 2 ? borderRadius[1][0] : width / 2, trv = borderRadius[1][1] < height / 2 ? borderRadius[1][1] : height / 2, brh = borderRadius[2][0] < width / 2 ? borderRadius[2][0] : width / 2, brv = borderRadius[2][1] < height / 2 ? borderRadius[2][1] : height / 2, blh = borderRadius[3][0] < width / 2 ? borderRadius[3][0] : width / 2, blv = borderRadius[3][1] < height / 2 ? borderRadius[3][1] : height / 2; 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]; } 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 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(punycode.ucs2.encode(word)); } onWordBoundary =! onWordBoundary; i = 0; } else { i++; } if (i >= characters.length) { word = characters.splice(0, i); if (word.length) { words.push(punycode.ucs2.encode(word)); } } } return words; } function isWordBoundary(characterCode) { return [ 32, // <space> 13, // 10, // 9, // 45 // - ].indexOf(characterCode) !== -1; } function hasUnicode(string) { return (/[^u0000-u00ff]/).test(string); } module.exports = NodeParser; },{"./color":3,"./fontmetrics":7,"./log":13,"./nodecontainer":14,"./pseudoelementcontainer":18,"./stackingcontext":21,"./textcontainer":25,"./utils":26,"punycode":1}],16:[function(_dereq_,module,exports){ var XHR = _dereq_('./xhr'); var utils = _dereq_('./utils'); var log = _dereq_('./log'); var createWindowClone = _dereq_('./clone'); var decode64 = utils.decode64; function Proxy(src, proxyUrl, document) { var supportsCORS = ('withCredentials' in new XMLHttpRequest()); if (!proxyUrl) { return Promise.reject("No proxy configured"); } var callback = createCallback(supportsCORS); var url = createProxyUrl(proxyUrl, src, callback); return supportsCORS ? XHR(url) : (jsonp(document, url, callback).then(function(response) { return decode64(response.content); })); } var proxyCount = 0; function ProxyURL(src, proxyUrl, document) { var supportsCORSImage = ('crossOrigin' in new Image()); var callback = createCallback(supportsCORSImage); var url = createProxyUrl(proxyUrl, 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(proxyUrl, src, callback) { return proxyUrl + "?url=" + encodeURIComponent(src) + (callback.length ? "&callback=html2canvas.proxy." + callback : ""); } 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 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); }); } exports.Proxy = Proxy; exports.ProxyURL = ProxyURL; exports.loadUrlDocument = loadUrlDocument; },{"./clone":2,"./log":13,"./utils":26,"./xhr":28}],17:[function(_dereq_,module,exports){ var ProxyURL = _dereq_('./proxy').ProxyURL; function ProxyImageContainer(src, proxy) { 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); }); } module.exports = ProxyImageContainer; },{"./proxy":16}],18:[function(_dereq_,module,exports){ var NodeContainer = _dereq_('./nodecontainer'); 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"; module.exports = PseudoElementContainer; },{"./nodecontainer":14}],19:[function(_dereq_,module,exports){ var log = _dereq_('./log'); 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; } }; module.exports = Renderer; },{"./log":13}],20:[function(_dereq_,module,exports){ var Renderer = _dereq_('../renderer'); var LinearGradientContainer = _dereq_('../lineargradientcontainer'); var log = _dereq_('../log'); 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; } module.exports = CanvasRenderer; },{"../lineargradientcontainer":12,"../log":13,"../renderer":19}],21:[function(_dereq_,module,exports){ var NodeContainer = _dereq_('./nodecontainer'); 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; }; module.exports = StackingContext; },{"./nodecontainer":14}],22:[function(_dereq_,module,exports){ 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; }; module.exports = Support; },{}],23:[function(_dereq_,module,exports){ var XHR = _dereq_('./xhr'); var decode64 = _dereq_('./utils').decode64; 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) { window.html2canvas.svg.fabric.loadSVGFromString(svg, self.createCanvas.call(self, resolve)); }); }); } SVGContainer.prototype.hasFabric = function() { return !window.html2canvas.svg || !window.html2canvas.svg.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 window.html2canvas.svg.fabric.StaticCanvas('c'); self.image = canvas.lowerCanvasEl; canvas .setWidth(options.width) .setHeight(options.height) .add(window.html2canvas.svg.fabric.util.groupSVGElements(objects, options)) .renderAll(); resolve(canvas.lowerCanvasEl); }; }; SVGContainer.prototype.decode64 = function(str) { return (typeof(window.atob) === "function") ? window.atob(str) : decode64(str); }; module.exports = SVGContainer; },{"./utils":26,"./xhr":28}],24:[function(_dereq_,module,exports){ var SVGContainer = _dereq_('./svgcontainer'); 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) { window.html2canvas.svg.fabric.parseSVGDocument(node, self.createCanvas.call(self, resolve)); }); }); } SVGNodeContainer.prototype = Object.create(SVGContainer.prototype); module.exports = SVGNodeContainer; },{"./svgcontainer":23}],25:[function(_dereq_,module,exports){ var NodeContainer = _dereq_('./nodecontainer'); 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(); } } module.exports = TextContainer; },{"./nodecontainer":14}],26:[function(_dereq_,module,exports){ exports.smallImage = function smallImage() { return "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7"; }; exports.bind = function(callback, context) { return function() { return callback.apply(context, arguments); }; }; /* * base64-arraybuffer * https://github.com/niklasvh/base64-arraybuffer * * Copyright (c) 2012 Niklas von Hertzen * Licensed under the MIT license. */ exports.decode64 = function(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; }; exports.getBounds = function(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, height: node.offsetHeight == null ? clientRect.height : node.offsetHeight }; } return {}; }; exports.offsetBounds = function(node) { var parent = node.offsetParent ? exports.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, node.offsetWidth, height: node.offsetHeight }; }; exports.parseBackgrounds = function(backgroundImage) { var whitespace = ' ', 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; }; },{}],27:[function(_dereq_,module,exports){ var GradientContainer = _dereq_('./gradientcontainer'); function WebkitGradientContainer(imageData) { GradientContainer.apply(this, arguments); this.type = imageData.args[0] === "linear" ? GradientContainer.TYPES.LINEAR : GradientContainer.TYPES.RADIAL; } WebkitGradientContainer.prototype = Object.create(GradientContainer.prototype); module.exports = WebkitGradientContainer; },{"./gradientcontainer":9}],28:[function(_dereq_,module,exports){ 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(); }); } module.exports = XHR; },{}]},{},[4])(4) });