1，業務要求將dom節點生成圖片，注意點，移動端dom節點不可以使用%，rem等布局。要是用px來布局，并且使用640的設計稿，適配320px的手機屏幕。要在服務器上才可以，我是用node+express搭建的服務器環境。如果有自己的環境可以直接引用下面代碼

2依賴的js:html2canvas.js和canvas2image.js,為了省事我引入jq。

1dom繪制成為canvas--------------html2canvas?

/*html2canvas 0.5.0-beta3 <http://html2canvas.hertzen.com>Copyright (c) 2016 Niklas von HertzenReleased 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, // 0x80delimiter = '-', // '\x2D'/** Regular expressions */regexPunycode = /^xn--/,regexNonASCII = /[^ -~]/, // unprintable ASCII chars + non-ASCII charsregexSeparators = /\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 characterextra = string.charCodeAt(counter++);if ((extra & 0xFC00) == 0xDC00) { // low surrogateoutput.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 pairoutput.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..9return 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-2var 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 pointif (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 outputoutput.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 Unicodeinput = ucs2decode(input);// Cache the lengthinputLength = input.length;// Initialize the staten = initialN;delta = 0;bias = initialBias;// Handle the basic code pointsfor (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 delimiterif (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 overflowhandledCPCountPlusOne = 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 integerfor (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 browserroot.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 itcontainerDocument.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 getComputedStyleif 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") {console.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);var renderer = new options.renderer(width, height, imageLoader, options, document);var parser = new NodeParser(node, renderer, support, imageLoader, options);return parser.ready.then(function() {log("Finished rendering");var canvas;if (options.type === "view") {canvas = crop(renderer.canvas, {width: renderer.canvas.width, height: renderer.canvas.height, top: 0, left: 0, x: 0, y: 0});}else if (node === clonedWindow.document.body || node === clonedWindow.document.documentElement) {canvas = renderer.canvas;}else if(options.scale && options.canvas !=null){console.log("放大canvas",options.canvas);var scale = options.scale || 1;canvas = crop(renderer.canvas, {width: bounds.width * scale, height:bounds.height * scale, top: bounds.top *scale, left: bounds.left *scale, x: 0, y: 0});}else{canvas = crop(renderer.canvas, {width: options.width != null ? options.width : bounds.width, height: options.height != null ? options.height : bounds.height, top: bounds.top, left: bounds.left, x: 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:", 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', width: container.width, height: container.height, proxy: options.proxy, javascriptEnabled: options.javascriptEnabled, removeContainer: options.removeContainer, allowTaint: options.allowTaint, imageTimeout: options.imageTimeout / 2});}).then(function(canvas) {return self.image = canvas;}); }FrameContainer.prototype.proxyLoad = function(proxy, bounds, options) {var container = this.src;return loadUrlDocument(container.src, proxy, container.ownerDocument, bounds.width, bounds.height, options); };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";//去掉源碼的anonymous，改為空// self.image.crossOrigin = "";}self.image.src = src;//在源碼src后面添加隨機數，如時間戳+"?"+new Date().getTime()// self.image.src = src+"?"+new Date().getTime();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-positiondefault: // 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 valuebreak;}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 rulethis.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') ? {width: bounds.height * currentRatio, height: bounds.height} : {width: bounds.width, height: bounds.width / currentRatio};} else {width = parseInt(size[0], 10);}if (size[0] === 'auto' && size[1] === 'auto') {height = image.height;} else if (size[1] === 'auto') {height = width / image.width * image.height;} else if (isPercentage(size[1])) {height = bounds.height * parseFloat(size[1]) / 100;} else {height = parseInt(size[1], 10);}if (size[0] === 'auto') {width = height / image.height * image.width;}return {width: width, height: height}; };NodeContainer.prototype.parseBackgroundPosition = function(bounds, image, index, backgroundSize) {var position = this.cssList('backgroundPosition', index);var left, top;if (isPercentage(position[0])){left = (bounds.width - (backgroundSize || image).width) * (parseFloat(position[0]) / 100);} else {left = parseInt(position[0], 10);}if (position[1] === 'auto') {top = left / image.width * image.height;} else if (isPercentage(position[1])){top = (bounds.height - (backgroundSize || image).height) * parseFloat(position[1]) / 100;} else {top = parseInt(position[1], 10);}if (position[0] === 'auto') {left = top / image.height * image.width;}return {left: left, top: top}; };NodeContainer.prototype.parseBackgroundRepeat = function(index) {return this.cssList("backgroundRepeat", index)[0]; };NodeContainer.prototype.parseTextShadows = function() {var textShadow = this.css("textShadow");var results = [];if (textShadow && textShadow !== 'none') {var shadows = textShadow.match(this.TEXT_SHADOW_PROPERTY);for (var i = 0; shadows && (i < shadows.length); i++) {var s = shadows[i].match(this.TEXT_SHADOW_VALUES);results.push({color: new Color(s[0]),offsetX: s[1] ? parseFloat(s[1].replace('px', '')) : 0,offsetY: s[2] ? parseFloat(s[2].replace('px', '')) : 0,blur: s[3] ? s[3].replace('px', '') : 0});}}return results; };NodeContainer.prototype.parseTransform = function() {if (!this.transformData) {if (this.hasTransform()) {var offset = this.parseBounds();var origin = this.prefixedCss("transformOrigin").split(" ").map(removePx).map(asFloat);origin[0] += offset.left;origin[1] += offset.top;this.transformData = {origin: origin,matrix: this.parseTransformMatrix()};} else {this.transformData = {origin: [0, 0],matrix: [1, 0, 0, 1, 0, 0]};}}return this.transformData; };NodeContainer.prototype.parseTransformMatrix = function() {if (!this.transformMatrix) {var transform = this.prefixedCss("transform");var matrix = transform ? parseMatrix(transform.match(this.MATRIX_PROPERTY)) : null;this.transformMatrix = matrix ? matrix : [1, 0, 0, 1, 0, 0];}return this.transformMatrix; };NodeContainer.prototype.parseBounds = function() {return this.bounds || (this.bounds = this.hasTransform() ? offsetBounds(this.node) : getBounds(this.node)); };NodeContainer.prototype.hasTransform = function() {return this.parseTransformMatrix().join(",") !== "1,0,0,1,0,0" || (this.parent && this.parent.hasTransform()); };NodeContainer.prototype.getValue = function() {var value = this.node.value || "";if (this.node.tagName === "SELECT") {value = selectionValue(this.node);} else if (this.node.type === "password") {value = Array(value.length + 1).join('\u2022'); // jshint ignore:line}return value.length === 0 ? (this.node.placeholder || "") : value; };NodeContainer.prototype.MATRIX_PROPERTY = /(matrix|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-backgroundsvar 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-indexvar negativeZindex = stack.contexts.filter(negativeZIndex); // 2. the child stacking contexts with negative stack levels (most negative first).var descendantElements = stack.children.filter(isElement);var descendantNonFloats = descendantElements.filter(not(isFloating));var nonInlineNonPositionedDescendants = descendantNonFloats.filter(not(isPositioned)).filter(not(inlineLevel)); // 3 the in-flow, non-inline-level, non-positioned descendants.var nonPositionedFloats = descendantElements.filter(not(isPositioned)).filter(isFloating); // 4. the non-positioned floats.var inFlow = descendantNonFloats.filter(not(isPositioned)).filter(inlineLevel); // 5. the in-flow, inline-level, non-positioned descendants, including inline tables and inline blocks.var stackLevel0 = stack.contexts.concat(descendantNonFloats.filter(isPositioned)).filter(zIndex0); // 6. the child stacking contexts with stack level 0 and the positioned descendants with stack level 0.var text = stack.children.filter(isTextNode).filter(hasText);var positiveZindex = stack.contexts.filter(positiveZIndex); // 7. the child stacking contexts with positive stack levels (least positive first).negativeZindex.concat(nonInlineNonPositionedDescendants).concat(nonPositionedFloats).concat(inFlow).concat(stackLevel0).concat(text).concat(positiveZindex).forEach(function(container) {this.renderQueue.push(container);if (isStackingContext(container)) {this.parse(container);this.renderQueue.push(new ClearTransform());}}, this); };NodeParser.prototype.paint = function(container) {try {if (container instanceof ClearTransform) {this.renderer.ctx.restore();} else if (isTextNode(container)) {if (isPseudoElement(container.parent)) {container.parent.appendToDOM();}this.paintText(container);if (isPseudoElement(container.parent)) {container.parent.cleanDOM();}} else {this.paintNode(container);}} catch(e) {log(e);if (this.options.strict) {throw e;}} };NodeParser.prototype.paintNode = function(container) {if (isStackingContext(container)) {this.renderer.setOpacity(container.opacity);this.renderer.ctx.save();if (container.hasTransform()) {this.renderer.setTransform(container.parseTransform());}}if (container.node.nodeName === "INPUT" && container.node.type === "checkbox") {this.paintCheckbox(container);} else if (container.node.nodeName === "INPUT" && container.node.type === "radio") {this.paintRadio(container);} else {this.paintElement(container);} };NodeParser.prototype.paintElement = function(container) {var bounds = container.parseBounds();this.renderer.clip(container.backgroundClip, function() {this.renderer.renderBackground(container, bounds, container.borders.borders.map(getWidth));}, this);this.renderer.clip(container.clip, function() {this.renderer.renderBorders(container.borders.borders);}, this);this.renderer.clip(container.backgroundClip, function() {switch (container.node.nodeName) {case "svg":case "IFRAME":var imgContainer = this.images.get(container.node);if (imgContainer) {this.renderer.renderImage(container, bounds, container.borders, imgContainer);} else {log("Error loading <" + container.node.nodeName + ">", container.node);}break;case "IMG":var imageContainer = this.images.get(container.node.src);if (imageContainer) {this.renderer.renderImage(container, bounds, container.borders, imageContainer);} else {log("Error loading <img>", container.node.src);}break;case "CANVAS":this.renderer.renderImage(container, bounds, container.borders, {image: container.node});break;case "SELECT":case "INPUT":case "TEXTAREA":this.paintFormValue(container);break;}}, this); };NodeParser.prototype.paintCheckbox = function(container) {var b = container.parseBounds();var size = Math.min(b.width, b.height);var bounds = {width: size - 1, height: size - 1, top: b.top, left: b.left};var r = [3, 3];var radius = [r, r, r, r];var borders = [1,1,1,1].map(function(w) {return {color: new Color('#A5A5A5'), width: w};});var borderPoints = calculateCurvePoints(bounds, radius, borders);this.renderer.clip(container.backgroundClip, function() {this.renderer.rectangle(bounds.left + 1, bounds.top + 1, bounds.width - 2, bounds.height - 2, new Color("#DEDEDE"));this.renderer.renderBorders(calculateBorders(borders, bounds, borderPoints, radius));if (container.node.checked) {this.renderer.font(new Color('#424242'), 'normal', 'normal', 'bold', (size - 3) + "px", 'arial');this.renderer.text("\u2714", bounds.left + size / 6, bounds.top + size - 1);}}, this); };NodeParser.prototype.paintRadio = function(container) {var bounds = container.parseBounds();var size = Math.min(bounds.width, bounds.height) - 2;this.renderer.clip(container.backgroundClip, function() {this.renderer.circleStroke(bounds.left + 1, bounds.top + 1, size, new Color('#DEDEDE'), 1, new Color('#A5A5A5'));if (container.node.checked) {this.renderer.circle(Math.ceil(bounds.left + size / 4) + 1, Math.ceil(bounds.top + size / 4) + 1, Math.floor(size / 2), new Color('#424242'));}}, this); };NodeParser.prototype.paintFormValue = function(container) {var value = container.getValue();if (value.length > 0) {var document = container.node.ownerDocument;var wrapper = document.createElement('html2canvaswrapper');var properties = ['lineHeight', 'textAlign', 'fontFamily', 'fontWeight', 'fontSize', 'color','paddingLeft', 'paddingTop', 'paddingRight', 'paddingBottom','width', 'height', 'borderLeftStyle', 'borderTopStyle', 'borderLeftWidth', 'borderTopWidth','boxSizing', 'whiteSpace', 'wordWrap'];properties.forEach(function(property) {try {wrapper.style[property] = container.css(property);} catch(e) {// Older IE has issues with "border"log("html2canvas: Parse: Exception caught in renderFormValue: " + e.message);}});var bounds = container.parseBounds();wrapper.style.position = "fixed";wrapper.style.left = bounds.left + "px";wrapper.style.top = bounds.top + "px";wrapper.textContent = value;document.body.appendChild(wrapper);this.paintText(new TextContainer(wrapper.firstChild, container));document.body.removeChild(wrapper);} };NodeParser.prototype.paintText = function(container) {container.applyTextTransform();var characters = 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 shadowsthis.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 sizethis.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-throughthis.renderer.rectangle(bounds.left, Math.ceil(bounds.top + metrics.middle + metrics.lineWidth), bounds.width, 1, container.color("color"));break;} };var borderColorTransforms = {inset: [["darken", 0.60],["darken", 0.10],["darken", 0.10],["darken", 0.60]] };NodeParser.prototype.parseBorders = function(container) {var nodeBounds = container.parseBounds();var radius = getBorderRadiusData(container);var borders = ["Top", "Right", "Bottom", "Left"].map(function(side, index) {var style = container.css('border' + side + 'Style');var color = container.color('border' + side + 'Color');if (style === "inset" && color.isBlack()) {color = new Color([255, 255, 255, color.a]); // this is wrong, but}var colorTransform = borderColorTransforms[style] ? borderColorTransforms[style][index] : null;return {width: container.cssInt('border' + side + 'Width'),color: colorTransform ? color[colorTransform[0]](colorTransform[1]) : color,args: null};});var borderPoints = calculateCurvePoints(nodeBounds, radius, borders);return {clip: this.parseBackgroundClip(container, borderPoints, borders, radius, nodeBounds),borders: calculateBorders(borders, nodeBounds, borderPoints, radius)}; };function calculateBorders(borders, nodeBounds, borderPoints, radius) {return borders.map(function(border, borderSide) {if (border.width > 0) {var bx = nodeBounds.left;var by = nodeBounds.top;var bw = nodeBounds.width;var bh = nodeBounds.height - (borders[2].width);switch(borderSide) {case 0:// top borderbh = 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 borderbx = 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 borderby = (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 borderbw = 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 horizontaloy = (r2) * kappa, // control point offset verticalxm = x + r1, // x-middleym = y + r2; // y-middlereturn {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, // \r10, // \n9, // \t45 // -].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: 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,width: node.offsetWidth,height: node.offsetHeight}; };exports.parseBackgrounds = function(backgroundImage) {var whitespace = ' \r\n\t',method, definition, prefix, prefix_i, block, results = [],mode = 0, numParen = 0, quote, args;var appendResult = function() {if(method) {if (definition.substr(0, 1) === '"') {definition = definition.substr(1, definition.length - 2);}if (definition) {args.push(definition);}if (method.substr(0, 1) === '-' && (prefix_i = method.indexOf('-', 1 ) + 1) > 0) {prefix = method.substr(0, prefix_i);method = method.substr(prefix_i);}results.push({prefix: prefix,method: method.toLowerCase(),value: block,args: args,image: null});}args = [];method = prefix = definition = block = '';};args = [];method = prefix = definition = block = '';backgroundImage.split("").forEach(function(c) {if (mode === 0 && whitespace.indexOf(c) > -1) {return;}switch(c) {case '"':if(!quote) {quote = c;} else if(quote === c) {quote = null;}break;case '(':if(quote) {break;} else if(mode === 0) {mode = 1;block += c;return;} else {numParen++;}break;case ')':if (quote) {break;} else if(mode === 1) {if(numParen === 0) {mode = 0;block += c;appendResult();return;} else {numParen--;}}break;case ',':if (quote) {break;} else if(mode === 0) {appendResult();return;} else if (mode === 1) {if (numParen === 0 && !method.match(/^url$/i)) {args.push(definition);definition = '';block += c;return;}}break;}block += c;if (mode === 0) {method += c;} else {definition += c;}});appendResult();return results; };},{}],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) });

?2canvas2image.js

/** Canvas2Image v0.1* Copyright (c) 2008 Jacob Seidelin, jseidelin@nihilogic.dk* MIT License [http://www.opensource.org/licenses/mit-license.php]*/var Canvas2Image = (function() {// check if we have canvas supportvar bHasCanvas = false;var oCanvas = document.createElement("canvas");if (oCanvas.getContext("2d")) {bHasCanvas = true;}// no canvas, bail out.if (!bHasCanvas) {return {saveAsBMP : function(){},saveAsPNG : function(){},saveAsJPEG : function(){}}}var bHasImageData = !!(oCanvas.getContext("2d").getImageData);var bHasDataURL = !!(oCanvas.toDataURL);var bHasBase64 = !!(window.btoa);var strDownloadMime = "image/octet-stream";// ok, we're goodvar readCanvasData = function(oCanvas) {var iWidth = parseInt(oCanvas.width);var iHeight = parseInt(oCanvas.height);return oCanvas.getContext("2d").getImageData(0,0,iWidth,iHeight);}// base64 encodes either a string or an array of charcodesvar encodeData = function(data) {var strData = "";if (typeof data == "string") {strData = data;} else {var aData = data;for (var i=0;i<aData.length;i++) {strData += String.fromCharCode(aData[i]);}}return btoa(strData);}// creates a base64 encoded string containing BMP data// takes an imagedata object as argumentvar createBMP = function(oData) {var aHeader = [];var iWidth = oData.width;var iHeight = oData.height;aHeader.push(0x42); // magic 1aHeader.push(0x4D); var iFileSize = iWidth*iHeight*3 + 54; // total header size = 54 bytesaHeader.push(iFileSize % 256); iFileSize = Math.floor(iFileSize / 256);aHeader.push(iFileSize % 256); iFileSize = Math.floor(iFileSize / 256);aHeader.push(iFileSize % 256); iFileSize = Math.floor(iFileSize / 256);aHeader.push(iFileSize % 256);aHeader.push(0); // reservedaHeader.push(0);aHeader.push(0); // reservedaHeader.push(0);aHeader.push(54); // dataoffsetaHeader.push(0);aHeader.push(0);aHeader.push(0);var aInfoHeader = [];aInfoHeader.push(40); // info header sizeaInfoHeader.push(0);aInfoHeader.push(0);aInfoHeader.push(0);var iImageWidth = iWidth;aInfoHeader.push(iImageWidth % 256); iImageWidth = Math.floor(iImageWidth / 256);aInfoHeader.push(iImageWidth % 256); iImageWidth = Math.floor(iImageWidth / 256);aInfoHeader.push(iImageWidth % 256); iImageWidth = Math.floor(iImageWidth / 256);aInfoHeader.push(iImageWidth % 256);var iImageHeight = iHeight;aInfoHeader.push(iImageHeight % 256); iImageHeight = Math.floor(iImageHeight / 256);aInfoHeader.push(iImageHeight % 256); iImageHeight = Math.floor(iImageHeight / 256);aInfoHeader.push(iImageHeight % 256); iImageHeight = Math.floor(iImageHeight / 256);aInfoHeader.push(iImageHeight % 256);aInfoHeader.push(1); // num of planesaInfoHeader.push(0);aInfoHeader.push(24); // num of bits per pixelaInfoHeader.push(0);aInfoHeader.push(0); // compression = noneaInfoHeader.push(0);aInfoHeader.push(0);aInfoHeader.push(0);var iDataSize = iWidth*iHeight*3; aInfoHeader.push(iDataSize % 256); iDataSize = Math.floor(iDataSize / 256);aInfoHeader.push(iDataSize % 256); iDataSize = Math.floor(iDataSize / 256);aInfoHeader.push(iDataSize % 256); iDataSize = Math.floor(iDataSize / 256);aInfoHeader.push(iDataSize % 256); for (var i=0;i<16;i++) {aInfoHeader.push(0); // these bytes not used}var iPadding = (4 - ((iWidth * 3) % 4)) % 4;var aImgData = oData.data;var strPixelData = "";var y = iHeight;do {var iOffsetY = iWidth*(y-1)*4;var strPixelRow = "";for (var x=0;x<iWidth;x++) {var iOffsetX = 4*x;strPixelRow += String.fromCharCode(aImgData[iOffsetY+iOffsetX+2]);strPixelRow += String.fromCharCode(aImgData[iOffsetY+iOffsetX+1]);strPixelRow += String.fromCharCode(aImgData[iOffsetY+iOffsetX]);}for (var c=0;c<iPadding;c++) {strPixelRow += String.fromCharCode(0);}strPixelData += strPixelRow;} while (--y);var strEncoded = encodeData(aHeader.concat(aInfoHeader)) + encodeData(strPixelData);return strEncoded;}// sends the generated file to the clientvar saveFile = function(strData) {document.location.href = strData;}var makeDataURI = function(strData, strMime) {return "data:" + strMime + ";base64," + strData;}// generates a <img> object containing the imagedatavar makeImageObject = function(strSource) {var oImgElement = document.createElement("img");oImgElement.src = strSource;return oImgElement;}var scaleCanvas = function(oCanvas, iWidth, iHeight) {if (iWidth && iHeight) {var oSaveCanvas = document.createElement("canvas");oSaveCanvas.width = iWidth;oSaveCanvas.height = iHeight;oSaveCanvas.style.width = iWidth+"px";oSaveCanvas.style.height = iHeight+"px";var oSaveCtx = oSaveCanvas.getContext("2d");oSaveCtx.drawImage(oCanvas, 0, 0, oCanvas.width, oCanvas.height, 0, 0, iWidth, iHeight);return oSaveCanvas;}return oCanvas;}return {saveAsPNG : function(oCanvas, bReturnImg, iWidth, iHeight) {if (!bHasDataURL) {return false;}var oScaledCanvas = scaleCanvas(oCanvas, iWidth, iHeight);var strData = oScaledCanvas.toDataURL("image/png");if (bReturnImg) {return makeImageObject(strData);} else {saveFile(strData.replace("image/png", strDownloadMime));}return true;},saveAsJPEG : function(oCanvas, bReturnImg, iWidth, iHeight) {if (!bHasDataURL) {return false;}var oScaledCanvas = scaleCanvas(oCanvas, iWidth, iHeight);var strMime = "image/jpeg";var strData = oScaledCanvas.toDataURL(strMime);// check if browser actually supports jpeg by looking for the mime type in the data uri.// if not, return falseif (strData.indexOf(strMime) != 5) {return false;}if (bReturnImg) {return makeImageObject(strData);} else {saveFile(strData.replace(strMime, strDownloadMime));}return true;},saveAsBMP : function(oCanvas, bReturnImg, iWidth, iHeight) {if (!(bHasImageData && bHasBase64)) {return false;}var oScaledCanvas = scaleCanvas(oCanvas, iWidth, iHeight);var oData = readCanvasData(oScaledCanvas);var strImgData = createBMP(oData);if (bReturnImg) {return makeImageObject(makeDataURI(strImgData, "image/bmp"));} else {saveFile(makeDataURI(strImgData, strDownloadMime));}return true;}};})();

3jq一如你所擁用的jq

?

4實現代碼?

<!DOCTYPE html> <html lang="zh-cn"><head><title>將dom節點生成img圖片</title><style>* {margin: 0;padding: 0;list-style: none;box-sizing: border-box;-webkit-box-sizing: border-box;-moz-box-sizing: border-box;}.layui-layer {background: none;box-shadow: 0px 0px 0px;}.dzhd_bg {position: absolute;left: 0;top: 0;bottom: 0;right: 0;z-index: -1;}.dzhd-con {position: relative;width: 400px;height: 400px;/*background:url("/images/dfmx-klt.png") no-repeat center top;*/padding: 230px 60px 0;}.dzhd-con ul {background: rgba(207, 215, 222, 0.20);padding: 20px 10px;}img {max-width: 100%;}.dzhd-con ul:nth-of-type(2) {background: none;}</style><script src="/creatImg/jquery.min.js"></script><script src="/creatImg/html2canvas.js"></script><script src="/creatImg/canvas2image.js"></script><body><h3>將dom節點生成img圖片<span>必須再服務器上才可以生成</span></h3><div class="common-container common-concc"><!--電子回單彈窗--><div class="dzhd-pop"><div class="dzhd-con" id="shareContent"><div class="dzhd_bg"><img src="/creatImg/receipt.png" alt=""></div></div><div onclick="cr()">點我生成圖片</div></div><div id="shareQrCodeImg" style="display: none"></div></div> </body><script>function cr() {html2Canvas();}/*要在服務器里上傳圖片*/var getBase64Url = function (obj, callback) {var image = new Image();// 引用外部圖片，需設置 crossOrigin 屬性，否則 toDataURL 調用異常image.setAttribute('crossOrigin', 'anonymous');image.onload = function () {var canvas = document.createElement("canvas");var context = canvas.getContext("2d");canvas.width = obj.width || image.width;canvas.height = obj.height || image.height;context.drawImage(image, 0, 0);// 最終生成的圖片 base64 字符串var base64Image = canvas.toDataURL();callback && callback(base64Image);// console.log(base64Image);};// 將 src 換成 base64 字符串console.log(121313)if (obj.src) {image.src = obj.src;}}//生成圖base64編碼getBase64Url({width: 750,height: 750,src: $("#bannerImgCORS").attr("src")}, function (base64Image) {// $("#bannerImgCORS").attr({// "src": base64Image// });});getBase64Url({src: $("#avatarImgCORS").attr("src")}, function (base64Image) {$("#avatarImgCORS").attr({"src": base64Image});});//對圖片旋轉處理 var rotateImg = function (img, direction, canvas) {//alert(img); //最小與最大旋轉方向，圖片旋轉4次后回到原方向 var min_step = 0;var max_step = 3;//var img = document.getElementById(pid); if (img == null)return;//img的高度和寬度不能在img元素隱藏后獲取，否則會出錯 var height = img.height;var width = img.width;//var step = img.getAttribute('step'); var step = 2;if (step == null) {step = min_step;}if (direction == 'right') {step++;//旋轉到原位置，即超過最大值 step > max_step && (step = min_step);} else {step--;step < min_step && (step = max_step);}//旋轉角度以弧度值為參數 var degree = step * 90 * Math.PI / 180;var ctx = canvas.getContext('2d');switch (step) {case 0:canvas.width = width;canvas.height = height;ctx.drawImage(img, 0, 0);break;case 1:canvas.width = height;canvas.height = width;ctx.rotate(degree);ctx.drawImage(img, 0, -height);break;case 2:canvas.width = width;canvas.height = height;ctx.rotate(degree);ctx.drawImage(img, -width, -height);break;case 3:canvas.width = height;canvas.height = width;ctx.rotate(degree);ctx.drawImage(img, -width, 0);break;}};var html2Canvas = function (data) {var data = data;//獲取像素密度var getPixelRatio = function (context) {var backingStore = context.backingStorePixelRatio ||context.webkitBackingStorePixelRatio ||context.mozBackingStorePixelRatio ||context.msBackingStorePixelRatio ||context.oBackingStorePixelRatio ||context.backingStorePixelRatio || 1;return (window.devicePixelRatio || 1) / backingStore;}//定義查找元素 方法var $s = function (selector) {return document.querySelector(selector);}var shareContent = $s("#shareContent"); // 需要繪制的部分的 (原生）dom 對象 ，注意容器的寬度不要使用百分比，使用固定寬度，避免縮放問題var width = shareContent.offsetWidth; // 獲取(原生）dom 寬度var height = shareContent.offsetHeight; // 獲取(原生）dom 高var offsetTop = shareContent.offsetTop; //元素距離頂部的偏移量var canvas = document.createElement('canvas'); //創建canvas 對象var context = canvas.getContext('2d');var scaleBy = getPixelRatio(context); //獲取像素密度的方法 (也可以采用自定義縮放比例)// canvas.width = width * scaleBy; //這里 由于繪制的dom 為固定寬度，居中，所以沒有偏移canvas.width = (width + offsetTop) * scaleBy;canvas.height = (height + offsetTop) * scaleBy; // 注意高度問題，由于頂部有個距離所以要加上頂部的距離，解決圖像高度偏移問題// canvas.height = height * scaleBy;context.scale(scaleBy, scaleBy);var opts = {allowTaint: true, //允許加載跨域的圖片tainttest: true, //檢測每張圖片都已經加載完成scale: scaleBy, // 添加的scale 參數canvas: canvas, //自定義 canvaslogging: false, //日志開關，發布的時候記得改成falsewidth: width, //dom 原始寬度height: height, //dom 原始高度};console.log(2)html2canvas(shareContent, opts).then(function (canvas) {var hideCanvas = document.getElementById("shareQrCodeImg");hideCanvas.innerHTML = '';hideCanvas.appendChild(canvas);console.log(3112)var shareImgWidth = 640;var shareImgHeight = (shareImgWidth * canvas.height) / canvas.width;$(canvas).attr({"id": "mycanvas"});var oCanvas = document.getElementById("mycanvas");// 把畫布保存成100x100的png格式,參數為false則是直接下載圖片var oImg = Canvas2Image.saveAsPNG(canvas, true, shareImgWidth, shareImgHeight);console.log(2121, oImg)$("body").append(oImg)});} </script></html>

?

總結

以上是生活随笔為你收集整理的dom节点生成图片的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。