diff --git a/.jshintrc b/.jshintrc index ea352f1..12b067c 100644 --- a/.jshintrc +++ b/.jshintrc @@ -15,5 +15,5 @@ "jQuery": true }, "predef": ["NodeParser", "NodeContainer", "StackingContext", "TextContainer", "ImageLoader", "CanvasRenderer", "Renderer", "Support", "bind", "Promise", "getBounds", "offsetBounds", "XHR", - "ImageContainer", "ProxyImageContainer", "DummyImageContainer", "Font", "FontMetrics", "GradientContainer", "LinearGradientContainer", "WebkitGradientContainer", "SVGContainer", "SVGNodeContainer", "FrameContainer", "html2canvas", "log", "smallImage", "parseBackgrounds", "createWindowClone", "decode64", "Proxy", "ProxyURL"] + "ImageContainer", "ProxyImageContainer", "DummyImageContainer", "Font", "FontMetrics", "GradientContainer", "LinearGradientContainer", "WebkitGradientContainer", "SVGContainer", "SVGNodeContainer", "FrameContainer", "html2canvas", "log", "smallImage", "parseBackgrounds", "loadUrlDocument", "decode64", "Proxy", "ProxyURL"] } diff --git a/dist/html2canvas.js b/dist/html2canvas.js index b2befc1..b7b0ab1 100644 --- a/dist/html2canvas.js +++ b/dist/html2canvas.js @@ -580,6 +580,16 @@ window.html2canvas = function(nodeList, options) { 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; + + if (typeof(nodeList) === "string") { + if (typeof(options.proxy) !== "string") { + return Promise.reject("Proxy must be used when rendering url"); + } + return loadUrlDocument(absoluteUrl(nodeList), options.proxy, document, window.innerWidth, window.innerHeight, options).then(function(container) { + return renderWindow(container.contentWindow.document.documentElement, container, options, window.innerWidth, window.innerHeight); + }); + } var node = ((nodeList === undefined) ? [document.documentElement] : ((nodeList.length) ? nodeList : [nodeList]))[0]; node.setAttribute(html2canvasNodeAttribute, "true"); @@ -602,25 +612,34 @@ function renderDocument(document, options, windowWidth, windowHeight) { document.querySelector(selector).removeAttribute(html2canvasNodeAttribute); var clonedWindow = container.contentWindow; var node = clonedWindow.document.querySelector(selector); - var support = new Support(clonedWindow.document); - var imageLoader = new ImageLoader(options, support); - var bounds = getBounds(node); - var width = options.width != null ? options.width : options.type === "view" ? Math.min(bounds.width, windowWidth) : documentWidth(clonedWindow.document); - var height = options.height != null ? options.height : options.type === "view" ? Math.min(bounds.height, windowHeight) : documentHeight(clonedWindow.document); - var renderer = new CanvasRenderer(width, height, imageLoader, options, document); - var parser = new NodeParser(node, renderer, support, imageLoader, options); - return parser.ready.then(function() { - log("Finished rendering"); - var canvas = (options.type !== "view" && (node === clonedWindow.document.body || node === clonedWindow.document.documentElement)) ? renderer.canvas : crop(renderer.canvas, bounds); - if (options.removeContainer) { - container.parentNode.removeChild(container); - log("Cleaned up container"); - } - return canvas; - }); + 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.width != null ? options.width : options.type === "view" ? Math.min(bounds.width, windowWidth) : documentWidth(clonedWindow.document); + var height = options.height != null ? options.height : options.type === "view" ? Math.min(bounds.height, windowHeight) : documentHeight(clonedWindow.document); + var renderer = new CanvasRenderer(width, height, imageLoader, options, document); + var parser = new NodeParser(node, renderer, support, imageLoader, options); + return parser.ready.then(function() { + log("Finished rendering"); + var canvas = (options.type !== "view" && (node === clonedWindow.document.body || node === clonedWindow.document.documentElement)) ? renderer.canvas : crop(renderer.canvas, bounds); + 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)); @@ -684,13 +703,38 @@ function createWindowClone(ownerDocument, containerDocument, width, height, opti documentClone.write(""); documentClone.close(); - documentClone.replaceChild(removeScriptNodes(documentClone.adoptNode(documentElement)), documentClone.documentElement); + documentClone.replaceChild(options.javascriptEnabled === true ? documentClone.adoptNode(documentElement) : removeScriptNodes(documentClone.adoptNode(documentElement)), documentClone.documentElement); if (options.type === "view") { container.contentWindow.scrollTo(window.pageXOffset, window.pageYOffset); } }); } +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); + }); +} + +function documentFromHTML(src) { + return function(html) { + var doc = document.implementation.createHTMLDocument(""); + doc.open(); + doc.write(html); + doc.close(); + + var b = doc.querySelector("base"); + if (!b || !b.href.host) { + var base = doc.createElement("base"); + base.href = src; + doc.head.insertBefore(base, doc.head.firstChild); + } + + return doc; + }; +} + + function labelCanvasElements(ownerDocument) { [].slice.call(ownerDocument.querySelectorAll("canvas"), 0).forEach(function(canvas) { canvas.setAttribute(html2canvasCanvasCloneAttribute, "canvas-" + html2canvasCanvasCloneIndex++); @@ -728,6 +772,13 @@ function isElementNode(node) { return node.nodeType === Node.ELEMENT_NODE; } +function absoluteUrl(url) { + var link = document.createElement("a"); + link.href = url; + link.href = link.href; + return link; +} + function DummyImageContainer(src) { this.src = src; log("DummyImageContainer for", src); @@ -806,12 +857,12 @@ FontMetrics.prototype.getMetrics = function(family, size) { return this.data[family + "-" + size]; }; -function FrameContainer(container, sameOrigin, proxy) { +function FrameContainer(container, sameOrigin, options) { this.image = null; this.src = container; var self = this; var bounds = getBounds(container); - this.promise = (!sameOrigin ? this.proxyLoad(proxy, bounds) : new Promise(function(resolve) { + 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); @@ -820,37 +871,17 @@ function FrameContainer(container, sameOrigin, proxy) { resolve(container); } })).then(function(container) { - return html2canvas(container.contentWindow.document.documentElement, {type: 'view', proxy: proxy}); + return html2canvas(container.contentWindow.document.documentElement, {type: 'view', proxy: options.proxy, javascriptEnabled: options.javascriptEnabled, removeContainer: options.removeContainer}); }).then(function(canvas) { return self.image = canvas; }); } -FrameContainer.prototype.proxyLoad = function(proxy, bounds) { +FrameContainer.prototype.proxyLoad = function(proxy, bounds, options) { var container = this.src; - return new Proxy(container.src, proxy, window.document).then(documentFromHTML(container)).then(function(doc) { - return createWindowClone(doc, container.ownerDocument, bounds.width, bounds.height, {}); - }); + return loadUrlDocument(container.src, proxy, container.ownerDocument, bounds.width, bounds.height, options); }; -function documentFromHTML(container) { - return function(html) { - var doc = document.implementation.createHTMLDocument(""); - doc.open(); - doc.write(html); - doc.close(); - - var b = doc.querySelector("base"); - if (!b || !b.href.host) { - var base = doc.createElement("base"); - base.href = container.src; - doc.head.insertBefore(base, doc.head.firstChild); - } - - return doc; - }; -} - function GradientContainer(imageData) { this.src = imageData.value; this.colorStops = []; @@ -956,7 +987,7 @@ ImageLoader.prototype.loadImage = function(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.proxy); + return new FrameContainer(imageData.args[0], this.isSameOrigin(imageData.args[0].src), this.options); } else { return new DummyImageContainer(imageData); } diff --git a/dist/html2canvas.min.js b/dist/html2canvas.min.js index 89e6ac0..08807e4 100644 --- a/dist/html2canvas.min.js +++ b/dist/html2canvas.min.js @@ -4,5 +4,5 @@ Released under MIT License */ -!function(a,b,c){function d(a,b,c,d){return i(a,a,c,d,b).then(function(h){w("Document cloned");var i="["+Gb+"='true']";a.querySelector(i).removeAttribute(Gb);var j=h.contentWindow,k=j.document.querySelector(i),l=new wb(j.document),m=new u(b,l),n=E(k),o=null!=b.width?b.width:"view"===b.type?Math.min(n.width,c):f(j.document),p=null!=b.height?b.height:"view"===b.type?Math.min(n.height,d):g(j.document),q=new Eb(o,p,m,b,a),r=new G(k,q,l,m,b);return r.ready.then(function(){w("Finished rendering");var a="view"===b.type||k!==j.document.body&&k!==j.document.documentElement?e(q.canvas,n):q.canvas;return b.removeContainer&&(h.parentNode.removeChild(h),w("Cleaned up container")),a})})}function e(a,c){var d=b.createElement("canvas"),e=Math.min(a.width-1,Math.max(0,c.left)),f=Math.min(a.width,Math.max(1,c.left+c.width)),g=Math.min(a.height-1,Math.max(0,c.top)),h=Math.min(a.height,Math.max(1,c.top+c.height)),i=d.width=f-e,j=d.height=h-g;return w("Cropping canvas at:","left:",c.left,"top:",c.top,"width:",c.width,"height:",c.height),w("Resulting crop with width",i,"and height",j," with x",e,"and y",g),d.getContext("2d").drawImage(a,e,g,i,j,0,0,i,j),d}function f(a){return 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this.getRangeBounds(a.node,e,b.length)}if(a.node&&"string"==typeof a.node.data){var f=a.node.splitText(b.length),g=this.getWrapperBounds(a.node,a.parent.hasTransform());return a.node=f,g}}else(!this.support.rangeBounds||a.parent.hasTransform())&&(a.node=a.node.splitText(b.length));return{}}},G.prototype.getWrapperBounds=function(a,b){var c=a.ownerDocument.createElement("html2canvaswrapper"),d=a.parentNode,e=a.cloneNode(!0);c.appendChild(a.cloneNode(!0)),d.replaceChild(c,a);var f=b?F(c):E(c);return d.replaceChild(e,c),f},G.prototype.getRangeBounds=function(a,b,c){var d=this.range||(this.range=a.ownerDocument.createRange());return d.setStart(a,b),d.setEnd(a,b+c),d.getBoundingClientRect()},G.prototype.parse=function(a){var 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c=this.images.get(a.node);c?this.renderer.renderImage(a,b,a.borders,c):w("Error loading <"+a.node.nodeName+">",a.node);break;case"IMG":var d=this.images.get(a.node.src);d?this.renderer.renderImage(a,b,a.borders,d):w("Error loading ",a.node.src);break;case"CANVAS":this.renderer.renderImage(a,b,a.borders,{image:a.node});break;case"SELECT":case"INPUT":case"TEXTAREA":this.paintFormValue(a)}},this)},G.prototype.paintFormValue=function(a){if(a.getValue().length>0){var b=a.node.ownerDocument,c=b.createElement("html2canvaswrapper"),d=["lineHeight","textAlign","fontFamily","fontWeight","fontSize","color","paddingLeft","paddingTop","paddingRight","paddingBottom","width","height","borderLeftStyle","borderTopStyle","borderLeftWidth","borderTopWidth","boxSizing","whiteSpace","wordWrap"];d.forEach(function(b){try{c.style[b]=a.css(b)}catch(d){w("html2canvas: Parse: Exception caught in renderFormValue: "+d.message)}});var e=a.parseBounds();c.style.position="absolute",c.style.left=e.left+"px",c.style.top=e.top+"px",c.textContent=a.getValue(),b.body.appendChild(c),this.paintText(new Ab(c.firstChild,a)),b.body.removeChild(c)}},G.prototype.paintText=function(b){b.applyTextTransform();var c=a.html2canvas.punycode.ucs2.decode(b.node.data),d=this.options.letterRendering&&!V(b)||nb(b.node.data)?c.map(function(b){return a.html2canvas.punycode.ucs2.encode([b])}):lb(c),e=b.parent.fontWeight(),f=b.parent.css("fontSize"),g=b.parent.css("fontFamily"),h=b.parent.parseTextShadows();this.renderer.font(b.parent.css("color"),b.parent.css("fontStyle"),b.parent.css("fontVariant"),e,f,g),h.length?this.renderer.fontShadow(h[0].color,h[0].offsetX,h[0].offsetY,h[0].blur):this.renderer.clearShadow(),this.renderer.clip(b.parent.clip,function(){d.map(this.parseTextBounds(b),this).forEach(function(a,c){a&&(this.renderer.text(d[c],a.left,a.bottom),this.renderTextDecoration(b.parent,a,this.fontMetrics.getMetrics(g,f)))},this)},this)},G.prototype.renderTextDecoration=function(a,b,c){switch(a.css("textDecoration").split(" 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f=a.css("backgroundClip"),g=[];switch(f){case"content-box":case"padding-box":O(g,d[0],d[1],b.topLeftInner,b.topRightInner,e.left+c[3].width,e.top+c[0].width),O(g,d[1],d[2],b.topRightInner,b.bottomRightInner,e.left+e.width-c[1].width,e.top+c[0].width),O(g,d[2],d[3],b.bottomRightInner,b.bottomLeftInner,e.left+e.width-c[1].width,e.top+e.height-c[2].width),O(g,d[3],d[0],b.bottomLeftInner,b.topLeftInner,e.left+c[3].width,e.top+e.height-c[2].width);break;default:O(g,d[0],d[1],b.topLeftOuter,b.topRightOuter,e.left,e.top),O(g,d[1],d[2],b.topRightOuter,b.bottomRightOuter,e.left+e.width,e.top),O(g,d[2],d[3],b.bottomRightOuter,b.bottomLeftOuter,e.left+e.width,e.top+e.height),O(g,d[3],d[0],b.bottomLeftOuter,b.topLeftOuter,e.left,e.top+e.height)}return g},G.prototype.pseudoHideClass="___html2canvas___pseudoelement";var Jb=0,Kb="withCredentials"in new XMLHttpRequest,Lb="crossOrigin"in new Image;ub.prototype.renderImage=function(a,b,c,d){var e=a.cssInt("paddingLeft"),f=a.cssInt("paddingTop"),g=a.cssInt("paddingRight"),h=a.cssInt("paddingBottom"),i=c.borders,j=b.width-(i[1].width+i[3].width+e+g),k=b.height-(i[0].width+i[2].width+f+h);this.drawImage(d,0,0,d.image.width||j,d.image.height||k,b.left+e+i[3].width,b.top+f+i[0].width,j,k)},ub.prototype.renderBackground=function(a,b,c){b.height>0&&b.width>0&&(this.renderBackgroundColor(a,b),this.renderBackgroundImage(a,b,c))},ub.prototype.renderBackgroundColor=function(a,b){var c=a.css("backgroundColor");this.isTransparent(c)||this.rectangle(b.left,b.top,b.width,b.height,a.css("backgroundColor"))},ub.prototype.renderBorders=function(a){a.forEach(this.renderBorder,this)},ub.prototype.renderBorder=function(a){this.isTransparent(a.color)||null===a.args||this.drawShape(a.args,a.color)},ub.prototype.renderBackgroundImage=function(a,b,c){var d=a.parseBackgroundImages();d.reverse().forEach(function(d,e,f){switch(d.method){case"url":var g=this.images.get(d.args[0]);g?this.renderBackgroundRepeating(a,b,g,f.length-(e+1),c):w("Error loading background-image",d.args[0]);break;case"linear-gradient":case"gradient":var h=this.images.get(d.value);h?this.renderBackgroundGradient(h,b,c):w("Error loading background-image",d.args[0]);break;case"none":break;default:w("Unknown background-image type",d.args[0])}},this)},ub.prototype.renderBackgroundRepeating=function(a,b,c,d,e){var f=a.parseBackgroundSize(b,c.image,d),g=a.parseBackgroundPosition(b,c.image,d,f),h=a.parseBackgroundRepeat(d);switch(h){case"repeat-x":case"repeat no-repeat":this.backgroundRepeatShape(c,g,f,b,b.left+e[3],b.top+g.top+e[0],99999,f.height,e);break;case"repeat-y":case"no-repeat 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a=new Image,c=b.createElement("canvas"),d=c.getContext("2d");a.src="data:image/svg+xml,";try{d.drawImage(a,0,0),c.toDataURL()}catch(e){return!1}return!0},xb.prototype.hasFabric=function(){return html2canvas.fabric?Promise.resolve():Promise.reject(new Error("html2canvas.svg.js is not loaded, cannot render svg"))},xb.prototype.inlineFormatting=function(a){return/^data:image\/svg\+xml;base64,/.test(a)?this.decode64(this.removeContentType(a)):this.removeContentType(a)},xb.prototype.removeContentType=function(a){return a.replace(/^data:image\/svg\+xml(;base64)?,/,"")},xb.prototype.isInline=function(a){return/^data:image\/svg\+xml/i.test(a)},xb.prototype.createCanvas=function(a){var b=this;return function(c,d){var e=new html2canvas.fabric.StaticCanvas("c");b.image=e.lowerCanvasEl,e.setWidth(d.width).setHeight(d.height).add(html2canvas.fabric.util.groupSVGElements(c,d)).renderAll(),a(e.lowerCanvasEl)}},xb.prototype.decode64=function(b){return"function"==typeof a.atob?a.atob(b):yb(b)},zb.prototype=Object.create(xb.prototype),Ab.prototype=Object.create(x.prototype),Ab.prototype.applyTextTransform=function(){this.node.data=this.transform(this.parent.css("textTransform"))},Ab.prototype.transform=function(a){var b=this.node.data;switch(a){case"lowercase":return b.toLowerCase();case"capitalize":return b.replace(/(^|\s|:|-|\(|\))([a-z])/g,Bb);case"uppercase":return b.toUpperCase();default:return b}},Cb.prototype=Object.create(s.prototype),Eb.prototype=Object.create(ub.prototype),Eb.prototype.setFillStyle=function(a){return this.ctx.fillStyle=a,this.ctx},Eb.prototype.rectangle=function(a,b,c,d,e){this.setFillStyle(e).fillRect(a,b,c,d)},Eb.prototype.drawShape=function(a,b){this.shape(a),this.setFillStyle(b).fill()},Eb.prototype.taints=function(a){if(null===a.tainted){this.taintCtx.drawImage(a.image,0,0);try{this.taintCtx.getImageData(0,0,1,1),a.tainted=!1}catch(c){this.taintCtx=b.createElement("canvas").getContext("2d"),a.tainted=!0}}return a.tainted},Eb.prototype.drawImage=function(a,b,c,d,e,f,g,h,i){(!this.taints(a)||this.options.allowTaint)&&this.ctx.drawImage(a.image,b,c,d,e,f,g,h,i)},Eb.prototype.clip=function(a,b,c){this.ctx.save(),a.filter(Fb).forEach(function(a){this.shape(a).clip()},this),b.call(c),this.ctx.restore()},Eb.prototype.shape=function(a){return this.ctx.beginPath(),a.forEach(function(a,b){this.ctx[0===b?"moveTo":a[0]+"To"].apply(this.ctx,a.slice(1))},this),this.ctx.closePath(),this.ctx},Eb.prototype.font=function(a,b,c,d,e,f){this.setFillStyle(a).font=[b,c,d,e,f].join(" 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j=[["line",Math.round(e),Math.round(f)],["line",Math.round(e+g),Math.round(f)],["line",Math.round(e+g),Math.round(h+f)],["line",Math.round(e),Math.round(h+f)]];this.clip([j],function(){this.renderBackgroundRepeat(a,b,c,d,i[3],i[0])},this)},Eb.prototype.renderBackgroundRepeat=function(a,b,c,d,e,f){var g=Math.round(d.left+b.left+e),h=Math.round(d.top+b.top+f);this.setFillStyle(this.ctx.createPattern(this.resizeImage(a,c),"repeat")),this.ctx.translate(g,h),this.ctx.fill(),this.ctx.translate(-g,-h)},Eb.prototype.renderBackgroundGradient=function(a,b){if(a instanceof v){var c=this.ctx.createLinearGradient(b.left+b.width*a.x0,b.top+b.height*a.y0,b.left+b.width*a.x1,b.top+b.height*a.y1);a.colorStops.forEach(function(a){c.addColorStop(a.stop,a.color)}),this.rectangle(b.left,b.top,b.width,b.height,c)}},Eb.prototype.resizeImage=function(a,c){var d=a.image;if(d.width===c.width&&d.height===c.height)return d;var e,f=b.createElement("canvas");return 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this.images=a.reduce(jb(this.findBackgroundImage,this),this.findImages(a)),this.images.forEach(function(a,b){a.promise.then(function(){A("Succesfully loaded image #"+(b+1))},function(a){A("Failed loading image #"+(b+1),a)})}),this.ready=Promise.all(this.images.map(this.getPromise)),A("Finished searching images"),this},z.prototype=Object.create(w.prototype),z.prototype.stepRegExp=/((?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\))\s*(\d{1,3})?(%|px)?/,B.prototype.assignStack=function(a){this.stack=a,a.children.push(this)},B.prototype.isElementVisible=function(){return this.node.nodeType===Node.TEXT_NODE?this.parent.visible:"none"!==this.css("display")&&"hidden"!==this.css("visibility")&&!this.node.hasAttribute("data-html2canvas-ignore")&&("INPUT"!==this.node.nodeName||"hidden"!==this.node.getAttribute("type"))},B.prototype.css=function(a){return this.computedStyles||(this.computedStyles=this.computedStyle(null)),this.styles[a]||(this.styles[a]=this.computedStyles[a])},B.prototype.prefixedCss=function(a){var b=["webkit","moz","ms","o"],d=this.css(a);return d===c&&b.some(function(b){return d=this.css(b+a.substr(0,1).toUpperCase()+a.substr(1)),d!==c},this),d===c?null:d},B.prototype.computedStyle=function(a){return this.node.ownerDocument.defaultView.getComputedStyle(this.node,a)},B.prototype.cssInt=function(a){var b=parseInt(this.css(a),10);return isNaN(b)?0:b},B.prototype.cssFloat=function(a){var b=parseFloat(this.css(a));return isNaN(b)?0:b},B.prototype.fontWeight=function(){var a=this.css("fontWeight");switch(parseInt(a,10)){case 401:a="bold";break;case 400:a="normal"}return a},B.prototype.parseBackgroundImages=function(){return this.backgroundImages||(this.backgroundImages=F(this.css("backgroundImage")))},B.prototype.cssList=function(a,b){var c=(this.css(a)||"").split(",");return c=c[b||0]||c[0]||"auto",c=c.trim().split(" 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this.getRangeBounds(a.node,e,b.length)}if(a.node&&"string"==typeof a.node.data){var f=a.node.splitText(b.length),g=this.getWrapperBounds(a.node,a.parent.hasTransform());return a.node=f,g}}else(!this.support.rangeBounds||a.parent.hasTransform())&&(a.node=a.node.splitText(b.length));return{}}},K.prototype.getWrapperBounds=function(a,b){var c=a.ownerDocument.createElement("html2canvaswrapper"),d=a.parentNode,e=a.cloneNode(!0);c.appendChild(a.cloneNode(!0)),d.replaceChild(c,a);var f=b?J(c):I(c);return d.replaceChild(e,c),f},K.prototype.getRangeBounds=function(a,b,c){var d=this.range||(this.range=a.ownerDocument.createRange());return d.setStart(a,b),d.setEnd(a,b+c),d.getBoundingClientRect()},K.prototype.parse=function(a){var b=a.contexts.filter(T),c=a.children.filter(fb),d=c.filter(eb(cb)),e=d.filter(eb(bb)).filter(eb(W)),f=c.filter(eb(bb)).filter(cb),g=d.filter(eb(bb)).filter(W),h=a.contexts.concat(d.filter(bb)).filter(V),i=a.children.filter(gb).filter(Y),j=a.contexts.filter(U);b.concat(e).concat(f).concat(g).concat(h).concat(i).concat(j).forEach(function(a){this.renderQueue.push(a),X(a)&&(this.parse(a),this.renderQueue.push(new N))},this)},K.prototype.paint=function(a){try{a instanceof N?this.renderer.ctx.restore():gb(a)?this.paintText(a):this.paintNode(a)}catch(b){A(b)}},K.prototype.paintNode=function(a){X(a)&&(this.renderer.setOpacity(a.opacity),this.renderer.ctx.save(),a.hasTransform()&&this.renderer.setTransform(a.parseTransform()));var b=a.parseBounds();this.renderer.clip(a.backgroundClip,function(){this.renderer.renderBackground(a,b,a.borders.borders.map(lb))},this),this.renderer.clip(a.clip,function(){switch(this.renderer.renderBorders(a.borders.borders),a.node.nodeName){case"svg":case"IFRAME":var c=this.images.get(a.node);c?this.renderer.renderImage(a,b,a.borders,c):A("Error loading <"+a.node.nodeName+">",a.node);break;case"IMG":var d=this.images.get(a.node.src);d?this.renderer.renderImage(a,b,a.borders,d):A("Error loading ",a.node.src);break;case"CANVAS":this.renderer.renderImage(a,b,a.borders,{image:a.node});break;case"SELECT":case"INPUT":case"TEXTAREA":this.paintFormValue(a)}},this)},K.prototype.paintFormValue=function(a){if(a.getValue().length>0){var b=a.node.ownerDocument,c=b.createElement("html2canvaswrapper"),d=["lineHeight","textAlign","fontFamily","fontWeight","fontSize","color","paddingLeft","paddingTop","paddingRight","paddingBottom","width","height","borderLeftStyle","borderTopStyle","borderLeftWidth","borderTopWidth","boxSizing","whiteSpace","wordWrap"];d.forEach(function(b){try{c.style[b]=a.css(b)}catch(d){A("html2canvas: Parse: Exception caught in renderFormValue: "+d.message)}});var e=a.parseBounds();c.style.position="absolute",c.style.left=e.left+"px",c.style.top=e.top+"px",c.textContent=a.getValue(),b.body.appendChild(c),this.paintText(new Eb(c.firstChild,a)),b.body.removeChild(c)}},K.prototype.paintText=function(b){b.applyTextTransform();var c=a.html2canvas.punycode.ucs2.decode(b.node.data),d=this.options.letterRendering&&!Z(b)||rb(b.node.data)?c.map(function(b){return a.html2canvas.punycode.ucs2.encode([b])}):pb(c),e=b.parent.fontWeight(),f=b.parent.css("fontSize"),g=b.parent.css("fontFamily"),h=b.parent.parseTextShadows();this.renderer.font(b.parent.css("color"),b.parent.css("fontStyle"),b.parent.css("fontVariant"),e,f,g),h.length?this.renderer.fontShadow(h[0].color,h[0].offsetX,h[0].offsetY,h[0].blur):this.renderer.clearShadow(),this.renderer.clip(b.parent.clip,function(){d.map(this.parseTextBounds(b),this).forEach(function(a,c){a&&(this.renderer.text(d[c],a.left,a.bottom),this.renderTextDecoration(b.parent,a,this.fontMetrics.getMetrics(g,f)))},this)},this)},K.prototype.renderTextDecoration=function(a,b,c){switch(a.css("textDecoration").split(" ")[0]){case"underline":this.renderer.rectangle(b.left,Math.round(b.top+c.baseline+c.lineWidth),b.width,1,a.css("color"));break;case"overline":this.renderer.rectangle(b.left,Math.round(b.top),b.width,1,a.css("color"));break;case"line-through":this.renderer.rectangle(b.left,Math.ceil(b.top+c.middle+c.lineWidth),b.width,1,a.css("color"))}},K.prototype.parseBorders=function(a){var b=a.parseBounds(),c=$(a),d=["Top","Right","Bottom","Left"].map(function(b){return{width:a.cssInt("border"+b+"Width"),color:a.css("border"+b+"Color"),args:null}}),e=P(b,c,d);return{clip:this.parseBackgroundClip(a,e,d,c,b),borders:d.map(function(a,f){if(a.width>0){var g=b.left,h=b.top,i=b.width,j=b.height-d[2].width;switch(f){case 0:j=d[0].width,a.args=R({c1:[g,h],c2:[g+i,h],c3:[g+i-d[1].width,h+j],c4:[g+d[3].width,h+j]},c[0],c[1],e.topLeftOuter,e.topLeftInner,e.topRightOuter,e.topRightInner);break;case 1:g=b.left+b.width-d[1].width,i=d[1].width,a.args=R({c1:[g+i,h],c2:[g+i,h+j+d[2].width],c3:[g,h+j],c4:[g,h+d[0].width]},c[1],c[2],e.topRightOuter,e.topRightInner,e.bottomRightOuter,e.bottomRightInner);break;case 2:h=h+b.height-d[2].width,j=d[2].width,a.args=R({c1:[g+i,h+j],c2:[g,h+j],c3:[g+d[3].width,h],c4:[g+i-d[3].width,h]},c[2],c[3],e.bottomRightOuter,e.bottomRightInner,e.bottomLeftOuter,e.bottomLeftInner);break;case 3:i=d[3].width,a.args=R({c1:[g,h+j+d[2].width],c2:[g,h],c3:[g+i,h+d[0].width],c4:[g+i,h+j]},c[3],c[0],e.bottomLeftOuter,e.bottomLeftInner,e.topLeftOuter,e.topLeftInner)}}return a})}},K.prototype.parseBackgroundClip=function(a,b,c,d,e){var f=a.css("backgroundClip"),g=[];switch(f){case"content-box":case"padding-box":S(g,d[0],d[1],b.topLeftInner,b.topRightInner,e.left+c[3].width,e.top+c[0].width),S(g,d[1],d[2],b.topRightInner,b.bottomRightInner,e.left+e.width-c[1].width,e.top+c[0].width),S(g,d[2],d[3],b.bottomRightInner,b.bottomLeftInner,e.left+e.width-c[1].width,e.top+e.height-c[2].width),S(g,d[3],d[0],b.bottomLeftInner,b.topLeftInner,e.left+c[3].width,e.top+e.height-c[2].width);break;default:S(g,d[0],d[1],b.topLeftOuter,b.topRightOuter,e.left,e.top),S(g,d[1],d[2],b.topRightOuter,b.bottomRightOuter,e.left+e.width,e.top),S(g,d[2],d[3],b.bottomRightOuter,b.bottomLeftOuter,e.left+e.width,e.top+e.height),S(g,d[3],d[0],b.bottomLeftOuter,b.topLeftOuter,e.left,e.top+e.height)}return g},K.prototype.pseudoHideClass="___html2canvas___pseudoelement";var Nb=0,Ob="withCredentials"in new XMLHttpRequest,Pb="crossOrigin"in new Image;yb.prototype.renderImage=function(a,b,c,d){var e=a.cssInt("paddingLeft"),f=a.cssInt("paddingTop"),g=a.cssInt("paddingRight"),h=a.cssInt("paddingBottom"),i=c.borders,j=b.width-(i[1].width+i[3].width+e+g),k=b.height-(i[0].width+i[2].width+f+h);this.drawImage(d,0,0,d.image.width||j,d.image.height||k,b.left+e+i[3].width,b.top+f+i[0].width,j,k)},yb.prototype.renderBackground=function(a,b,c){b.height>0&&b.width>0&&(this.renderBackgroundColor(a,b),this.renderBackgroundImage(a,b,c))},yb.prototype.renderBackgroundColor=function(a,b){var c=a.css("backgroundColor");this.isTransparent(c)||this.rectangle(b.left,b.top,b.width,b.height,a.css("backgroundColor"))},yb.prototype.renderBorders=function(a){a.forEach(this.renderBorder,this)},yb.prototype.renderBorder=function(a){this.isTransparent(a.color)||null===a.args||this.drawShape(a.args,a.color)},yb.prototype.renderBackgroundImage=function(a,b,c){var d=a.parseBackgroundImages();d.reverse().forEach(function(d,e,f){switch(d.method){case"url":var g=this.images.get(d.args[0]);g?this.renderBackgroundRepeating(a,b,g,f.length-(e+1),c):A("Error loading background-image",d.args[0]);break;case"linear-gradient":case"gradient":var h=this.images.get(d.value);h?this.renderBackgroundGradient(h,b,c):A("Error loading background-image",d.args[0]);break;case"none":break;default:A("Unknown background-image type",d.args[0])}},this)},yb.prototype.renderBackgroundRepeating=function(a,b,c,d,e){var f=a.parseBackgroundSize(b,c.image,d),g=a.parseBackgroundPosition(b,c.image,d,f),h=a.parseBackgroundRepeat(d);switch(h){case"repeat-x":case"repeat no-repeat":this.backgroundRepeatShape(c,g,f,b,b.left+e[3],b.top+g.top+e[0],99999,f.height,e);break;case"repeat-y":case"no-repeat repeat":this.backgroundRepeatShape(c,g,f,b,b.left+g.left+e[3],b.top+e[0],f.width,99999,e);break;case"no-repeat":this.backgroundRepeatShape(c,g,f,b,b.left+g.left+e[3],b.top+g.top+e[0],f.width,f.height,e);break;default:this.renderBackgroundRepeat(c,g,f,{top:b.top,left:b.left},e[3],e[0])}},yb.prototype.isTransparent=function(a){return!a||"transparent"===a||"rgba(0, 0, 0, 0)"===a},zb.prototype=Object.create(B.prototype),zb.prototype.getParentStack=function(a){var b=this.parent?this.parent.stack:null;return b?b.ownStacking?b:b.getParentStack(a):a.stack},Ab.prototype.testRangeBounds=function(a){var b,c,d,e,f=!1;return a.createRange&&(b=a.createRange(),b.getBoundingClientRect&&(c=a.createElement("boundtest"),c.style.height="123px",c.style.display="block",a.body.appendChild(c),b.selectNode(c),d=b.getBoundingClientRect(),e=d.height,123===e&&(f=!0),a.body.removeChild(c))),f},Ab.prototype.testCORS=function(){return"undefined"!=typeof(new Image).crossOrigin},Ab.prototype.testSVG=function(){var a=new Image,c=b.createElement("canvas"),d=c.getContext("2d");a.src="data:image/svg+xml,";try{d.drawImage(a,0,0),c.toDataURL()}catch(e){return!1}return!0},Bb.prototype.hasFabric=function(){return html2canvas.fabric?Promise.resolve():Promise.reject(new Error("html2canvas.svg.js is not loaded, cannot render svg"))},Bb.prototype.inlineFormatting=function(a){return/^data:image\/svg\+xml;base64,/.test(a)?this.decode64(this.removeContentType(a)):this.removeContentType(a)},Bb.prototype.removeContentType=function(a){return a.replace(/^data:image\/svg\+xml(;base64)?,/,"")},Bb.prototype.isInline=function(a){return/^data:image\/svg\+xml/i.test(a)},Bb.prototype.createCanvas=function(a){var b=this;return function(c,d){var e=new html2canvas.fabric.StaticCanvas("c");b.image=e.lowerCanvasEl,e.setWidth(d.width).setHeight(d.height).add(html2canvas.fabric.util.groupSVGElements(c,d)).renderAll(),a(e.lowerCanvasEl)}},Bb.prototype.decode64=function(b){return"function"==typeof a.atob?a.atob(b):Cb(b)},Db.prototype=Object.create(Bb.prototype),Eb.prototype=Object.create(B.prototype),Eb.prototype.applyTextTransform=function(){this.node.data=this.transform(this.parent.css("textTransform"))},Eb.prototype.transform=function(a){var b=this.node.data;switch(a){case"lowercase":return b.toLowerCase();case"capitalize":return b.replace(/(^|\s|:|-|\(|\))([a-z])/g,Fb);case"uppercase":return b.toUpperCase();default:return b}},Gb.prototype=Object.create(w.prototype),Ib.prototype=Object.create(yb.prototype),Ib.prototype.setFillStyle=function(a){return this.ctx.fillStyle=a,this.ctx},Ib.prototype.rectangle=function(a,b,c,d,e){this.setFillStyle(e).fillRect(a,b,c,d)},Ib.prototype.drawShape=function(a,b){this.shape(a),this.setFillStyle(b).fill()},Ib.prototype.taints=function(a){if(null===a.tainted){this.taintCtx.drawImage(a.image,0,0);try{this.taintCtx.getImageData(0,0,1,1),a.tainted=!1}catch(c){this.taintCtx=b.createElement("canvas").getContext("2d"),a.tainted=!0}}return a.tainted},Ib.prototype.drawImage=function(a,b,c,d,e,f,g,h,i){(!this.taints(a)||this.options.allowTaint)&&this.ctx.drawImage(a.image,b,c,d,e,f,g,h,i)},Ib.prototype.clip=function(a,b,c){this.ctx.save(),a.filter(Jb).forEach(function(a){this.shape(a).clip()},this),b.call(c),this.ctx.restore()},Ib.prototype.shape=function(a){return this.ctx.beginPath(),a.forEach(function(a,b){this.ctx[0===b?"moveTo":a[0]+"To"].apply(this.ctx,a.slice(1))},this),this.ctx.closePath(),this.ctx},Ib.prototype.font=function(a,b,c,d,e,f){this.setFillStyle(a).font=[b,c,d,e,f].join(" ")},Ib.prototype.fontShadow=function(a,b,c,d){this.setVariable("shadowColor",a).setVariable("shadowOffsetY",b).setVariable("shadowOffsetX",c).setVariable("shadowBlur",d)},Ib.prototype.clearShadow=function(){this.setVariable("shadowColor","rgba(0,0,0,0)")},Ib.prototype.setOpacity=function(a){this.ctx.globalAlpha=a},Ib.prototype.setTransform=function(a){this.ctx.translate(a.origin[0],a.origin[1]),this.ctx.transform.apply(this.ctx,a.matrix),this.ctx.translate(-a.origin[0],-a.origin[1])},Ib.prototype.setVariable=function(a,b){return this.variables[a]!==b&&(this.variables[a]=this.ctx[a]=b),this},Ib.prototype.text=function(a,b,c){this.ctx.fillText(a,b,c)},Ib.prototype.backgroundRepeatShape=function(a,b,c,d,e,f,g,h,i){var j=[["line",Math.round(e),Math.round(f)],["line",Math.round(e+g),Math.round(f)],["line",Math.round(e+g),Math.round(h+f)],["line",Math.round(e),Math.round(h+f)]];this.clip([j],function(){this.renderBackgroundRepeat(a,b,c,d,i[3],i[0])},this)},Ib.prototype.renderBackgroundRepeat=function(a,b,c,d,e,f){var g=Math.round(d.left+b.left+e),h=Math.round(d.top+b.top+f);this.setFillStyle(this.ctx.createPattern(this.resizeImage(a,c),"repeat")),this.ctx.translate(g,h),this.ctx.fill(),this.ctx.translate(-g,-h)},Ib.prototype.renderBackgroundGradient=function(a,b){if(a instanceof z){var c=this.ctx.createLinearGradient(b.left+b.width*a.x0,b.top+b.height*a.y0,b.left+b.width*a.x1,b.top+b.height*a.y1);a.colorStops.forEach(function(a){c.addColorStop(a.stop,a.color)}),this.rectangle(b.left,b.top,b.width,b.height,c)}},Ib.prototype.resizeImage=function(a,c){var d=a.image;if(d.width===c.width&&d.height===c.height)return d;var e,f=b.createElement("canvas");return f.width=c.width,f.height=c.height,e=f.getContext("2d"),e.drawImage(d,0,0,d.width,d.height,0,0,c.width,c.height),f}}(window,document); \ No newline at end of file diff --git a/src/core.js b/src/core.js index 2965acb..8db7410 100644 --- a/src/core.js +++ b/src/core.js @@ -12,6 +12,16 @@ window.html2canvas = function(nodeList, options) { 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; + + if (typeof(nodeList) === "string") { + if (typeof(options.proxy) !== "string") { + return Promise.reject("Proxy must be used when rendering url"); + } + return loadUrlDocument(absoluteUrl(nodeList), options.proxy, document, window.innerWidth, window.innerHeight, options).then(function(container) { + return renderWindow(container.contentWindow.document.documentElement, container, options, window.innerWidth, window.innerHeight); + }); + } var node = ((nodeList === undefined) ? [document.documentElement] : ((nodeList.length) ? nodeList : [nodeList]))[0]; node.setAttribute(html2canvasNodeAttribute, "true"); @@ -34,25 +44,34 @@ function renderDocument(document, options, windowWidth, windowHeight) { document.querySelector(selector).removeAttribute(html2canvasNodeAttribute); var clonedWindow = container.contentWindow; var node = clonedWindow.document.querySelector(selector); - var support = new Support(clonedWindow.document); - var imageLoader = new ImageLoader(options, support); - var bounds = getBounds(node); - var width = options.width != null ? options.width : options.type === "view" ? Math.min(bounds.width, windowWidth) : documentWidth(clonedWindow.document); - var height = options.height != null ? options.height : options.type === "view" ? Math.min(bounds.height, windowHeight) : documentHeight(clonedWindow.document); - var renderer = new CanvasRenderer(width, height, imageLoader, options, document); - var parser = new NodeParser(node, renderer, support, imageLoader, options); - return parser.ready.then(function() { - log("Finished rendering"); - var canvas = (options.type !== "view" && (node === clonedWindow.document.body || node === clonedWindow.document.documentElement)) ? renderer.canvas : crop(renderer.canvas, bounds); - if (options.removeContainer) { - container.parentNode.removeChild(container); - log("Cleaned up container"); - } - return canvas; - }); + 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.width != null ? options.width : options.type === "view" ? Math.min(bounds.width, windowWidth) : documentWidth(clonedWindow.document); + var height = options.height != null ? options.height : options.type === "view" ? Math.min(bounds.height, windowHeight) : documentHeight(clonedWindow.document); + var renderer = new CanvasRenderer(width, height, imageLoader, options, document); + var parser = new NodeParser(node, renderer, support, imageLoader, options); + return parser.ready.then(function() { + log("Finished rendering"); + var canvas = (options.type !== "view" && (node === clonedWindow.document.body || node === clonedWindow.document.documentElement)) ? renderer.canvas : crop(renderer.canvas, bounds); + 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)); @@ -116,13 +135,38 @@ function createWindowClone(ownerDocument, containerDocument, width, height, opti documentClone.write(""); documentClone.close(); - documentClone.replaceChild(removeScriptNodes(documentClone.adoptNode(documentElement)), documentClone.documentElement); + documentClone.replaceChild(options.javascriptEnabled === true ? documentClone.adoptNode(documentElement) : removeScriptNodes(documentClone.adoptNode(documentElement)), documentClone.documentElement); if (options.type === "view") { container.contentWindow.scrollTo(window.pageXOffset, window.pageYOffset); } }); } +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); + }); +} + +function documentFromHTML(src) { + return function(html) { + var doc = document.implementation.createHTMLDocument(""); + doc.open(); + doc.write(html); + doc.close(); + + var b = doc.querySelector("base"); + if (!b || !b.href.host) { + var base = doc.createElement("base"); + base.href = src; + doc.head.insertBefore(base, doc.head.firstChild); + } + + return doc; + }; +} + + function labelCanvasElements(ownerDocument) { [].slice.call(ownerDocument.querySelectorAll("canvas"), 0).forEach(function(canvas) { canvas.setAttribute(html2canvasCanvasCloneAttribute, "canvas-" + html2canvasCanvasCloneIndex++); @@ -159,3 +203,10 @@ function removeScriptNodes(parent) { function isElementNode(node) { return node.nodeType === Node.ELEMENT_NODE; } + +function absoluteUrl(url) { + var link = document.createElement("a"); + link.href = url; + link.href = link.href; + return link; +} diff --git a/src/framecontainer.js b/src/framecontainer.js index 0648da5..199aa79 100644 --- a/src/framecontainer.js +++ b/src/framecontainer.js @@ -1,9 +1,9 @@ -function FrameContainer(container, sameOrigin, proxy) { +function FrameContainer(container, sameOrigin, options) { this.image = null; this.src = container; var self = this; var bounds = getBounds(container); - this.promise = (!sameOrigin ? this.proxyLoad(proxy, bounds) : new Promise(function(resolve) { + 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); @@ -12,33 +12,13 @@ function FrameContainer(container, sameOrigin, proxy) { resolve(container); } })).then(function(container) { - return html2canvas(container.contentWindow.document.documentElement, {type: 'view', proxy: proxy}); + return html2canvas(container.contentWindow.document.documentElement, {type: 'view', proxy: options.proxy, javascriptEnabled: options.javascriptEnabled, removeContainer: options.removeContainer}); }).then(function(canvas) { return self.image = canvas; }); } -FrameContainer.prototype.proxyLoad = function(proxy, bounds) { +FrameContainer.prototype.proxyLoad = function(proxy, bounds, options) { var container = this.src; - return new Proxy(container.src, proxy, window.document).then(documentFromHTML(container)).then(function(doc) { - return createWindowClone(doc, container.ownerDocument, bounds.width, bounds.height, {}); - }); + return loadUrlDocument(container.src, proxy, container.ownerDocument, bounds.width, bounds.height, options); }; - -function documentFromHTML(container) { - return function(html) { - var doc = document.implementation.createHTMLDocument(""); - doc.open(); - doc.write(html); - doc.close(); - - var b = doc.querySelector("base"); - if (!b || !b.href.host) { - var base = doc.createElement("base"); - base.href = container.src; - doc.head.insertBefore(base, doc.head.firstChild); - } - - return doc; - }; -} diff --git a/src/imageloader.js b/src/imageloader.js index 888a5ed..6857da0 100644 --- a/src/imageloader.js +++ b/src/imageloader.js @@ -69,7 +69,7 @@ ImageLoader.prototype.loadImage = function(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.proxy); + return new FrameContainer(imageData.args[0], this.isSameOrigin(imageData.args[0].src), this.options); } else { return new DummyImageContainer(imageData); }