diff --git a/build/html2canvas.js b/build/html2canvas.js index bb2ad35..09a529d 100644 --- a/build/html2canvas.js +++ b/build/html2canvas.js @@ -49,11 +49,19 @@ function renderDocument(document, options, windowWidth, windowHeight) { if (options.removeContainer) { container.parentNode.removeChild(container); } - return renderer.canvas; + return (options.type !== "view" && (node === clonedWindow.document.body || node === clonedWindow.document.documentElement)) ? renderer.canvas : crop(renderer.canvas, bounds); }); }); } +function crop(canvas, bounds) { + var croppedCanvas = document.createElement("canvas"); + croppedCanvas.width = bounds.width; + croppedCanvas.height = bounds.height; + croppedCanvas.getContext("2d").drawImage(canvas, bounds.left, bounds.top, bounds.width, bounds.height, 0, 0, bounds.width, bounds.height); + return croppedCanvas; +} + function documentWidth () { return Math.max( Math.max(document.body.scrollWidth, document.documentElement.scrollWidth), @@ -1689,7 +1697,6 @@ StackingContext.prototype.getParentStack = function(context) { function Support(document) { this.rangeBounds = this.testRangeBounds(document); this.cors = this.testCORS(); - this.nativeRendering = this.testNativeRendering(document); } Support.prototype.testRangeBounds = function(document) { @@ -1721,24 +1728,6 @@ Support.prototype.testCORS = function() { return typeof((new Image()).crossOrigin) !== "undefined"; }; -Support.prototype.testNativeRendering = function(document) { - var NS = "http://www.w3.org/2000/svg"; - var svg = document.createElementNS(NS, "svg"); - var canvas = document.createElement("canvas"); - svg.setAttributeNS(NS, "width", "100"); - svg.setAttributeNS(NS, "height", "100"); - var div = document.createElement("div"); - var foreignObject = document.createElementNS(NS, "foreignObject"); - foreignObject.setAttributeNS(NS, "width", "100%"); - foreignObject.setAttributeNS(NS, "height", "100%"); - foreignObject.appendChild(document.documentElement.cloneNode(true)); - svg.appendChild(foreignObject); - div.appendChild(svg); - var ctx = canvas.getContext("2d"); - document.body.appendChild(canvas); - -}; - function TextContainer(node, parent) { NodeContainer.call(this, node, parent); } diff --git a/build/html2canvas.min.js b/build/html2canvas.min.js index 1e3b046..322c4dd 100644 --- a/build/html2canvas.min.js +++ b/build/html2canvas.min.js @@ -4,5 +4,5 @@ Released under MIT License */ -(function(t,e,n){function r(t,e,n,r){return a(t,n,r,e).then(function(s){v("Document cloned");var a="["+fe+"='true']";t.querySelector(a).removeAttribute(fe);var c=s.contentWindow,h=c.document.querySelector(a),u=new ue(c.document),p=new f(e,u),d=I(h),l="view"===e.type?Math.min(d.width,n):i(),g="view"===e.type?Math.min(d.height,r):o(),m=new ce(l,g,p),y=new S(h,m,u,p,e);return y.ready.then(function(){return v("Finished rendering"),e.removeContainer&&s.parentNode.removeChild(s),m.canvas})})}function i(){return 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t.filter(g).map(m).forEach(this.addImage(e,this.loadImage),this),e},f.prototype.findBackgroundImage=function(t,e){return e.parseBackgroundImages().filter(this.hasImageBackground).forEach(this.addImage(t,this.loadImage),this),t},f.prototype.addImage=function(t,e){return function(n){this.imageExists(t,n)||(t.splice(0,0,e.apply(this,arguments)),v("Added image #"+t.length,n))}},f.prototype.hasImageBackground=function(t){return"none"!==t.method},f.prototype.loadImage=function(t){if("url"===t.method){var e=t.args[0];return e.match(/data:image\/.*;base64,/i)?new l(e.replace(/url\(['"]{0,}|['"]{0,}\)$/gi,""),!1):this.isSameOrigin(e)||this.options.allowTaint===!0?new l(e,!1):this.support.cors&&!this.options.allowTaint&&this.options.useCORS?new l(e,!0):this.options.proxy?new se(e,this.options.proxy):new DummyImageContainer(e)}return"linear-gradient"===t.method?new y(t):"gradient"===t.method?new le(t):n},f.prototype.imageExists=function(t,e){return t.some(function(t){return 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e=t.contexts.filter(_),n=t.children.filter($),r=n.filter(q(Q)),i=r.filter(q(U)).filter(q(F)),o=n.filter(q(U)).filter(Q),s=r.filter(q(U)).filter(F),a=t.contexts.concat(r.filter(U)).filter(W),c=t.children.filter(J).filter(j),h=t.contexts.filter(D);e.concat(i).concat(o).concat(s).concat(a).concat(c).concat(h).forEach(function(t){this.renderQueue.push(t),H(t)&&(this.parse(t),this.renderQueue.push(new B))},this)},S.prototype.paint=function(t){try{t instanceof B?this.renderer.ctx.restore():J(t)?this.paintText(t):this.paintNode(t)}catch(e){v(e)}},S.prototype.paintNode=function(t){H(t)&&(this.renderer.setOpacity(t.opacity),this.renderer.ctx.save(),t.hasTransform()&&this.renderer.setTransform(t.parseTransform()));var e=t.parseBounds(),n=this.parseBorders(t);switch(this.renderer.clip(n.clip,function(){this.renderer.renderBackground(t,e,n.borders.map(ne))},this),this.renderer.renderBorders(n.borders),t.node.nodeName){case"IMG":var 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i=Date.now||function(){return(new Date).getTime()};t.objectOrFunction=e,t.isFunction=n,t.isArray=r,t.now=i}),i("promise/polyfill").polyfill()}();var me=0;ce.prototype.renderImage=function(t,e,n,r){var i=t.cssInt("paddingLeft"),o=t.cssInt("paddingTop"),s=t.cssInt("paddingRight"),a=t.cssInt("paddingBottom"),c=n.borders;this.drawImage(r,0,0,r.width,r.height,e.left+i+c[3].width,e.top+o+c[0].width,e.width-(c[1].width+c[3].width+i+s),e.height-(c[0].width+c[2].width+o+a))},ce.prototype.renderBackground=function(t,e,n){e.height>0&&e.width>0&&(this.renderBackgroundColor(t,e),this.renderBackgroundImage(t,e,n)) +},ce.prototype.renderBackgroundColor=function(t,e){var n=t.css("backgroundColor");this.isTransparent(n)||this.rectangle(e.left,e.top,e.width,e.height,t.css("backgroundColor"))},ce.prototype.renderBorders=function(t){t.forEach(this.renderBorder,this)},ce.prototype.renderBorder=function(t){this.isTransparent(t.color)||null===t.args||this.drawShape(t.args,t.color)},ce.prototype.renderBackgroundImage=function(t,e,n){var r=t.parseBackgroundImages();r.reverse().forEach(function(r,i,o){switch(r.method){case"url":var s=this.images.get(r.args[0]);s?this.renderBackgroundRepeating(t,e,s,o.length-(i+1),n):b("Error loading background-image",r.args[0]);break;case"linear-gradient":case"gradient":var a=this.images.get(r.value);a?this.renderBackgroundGradient(a,e,n):b("Error loading background-image",r.args[0]);break;case"none":break;default:b("Unknown background-image type",r.args[0])}},this)},ce.prototype.renderBackgroundRepeating=function(t,e,n,r,i){var o=t.parseBackgroundSize(e,n.image,r),s=t.parseBackgroundPosition(e,n.image,r,o),a=t.parseBackgroundRepeat(r);switch(a){case"repeat-x":case"repeat no-repeat":this.backgroundRepeatShape(n,s,o,e,e.left+i[3],e.top+s.top+i[0],99999,n.image.height,i);break;case"repeat-y":case"no-repeat repeat":this.backgroundRepeatShape(n,s,o,e,e.left+s.left+i[3],e.top+i[0],n.image.width,99999,i);break;case"no-repeat":this.backgroundRepeatShape(n,s,o,e,e.left+s.left+i[3],e.top+s.top+i[0],n.image.width,n.image.height,i);break;default:this.renderBackgroundRepeat(n,s,o,{top:e.top,left:e.left},i[3],i[0])}},ce.prototype.isTransparent=function(t){return!t||"transparent"===t||"rgba(0, 0, 0, 0)"===t},he.prototype=Object.create(ce.prototype),he.prototype.setFillStyle=function(t){return this.ctx.fillStyle=t,this.ctx},he.prototype.rectangle=function(t,e,n,r,i){this.setFillStyle(i).fillRect(t,e,n,r)},he.prototype.drawShape=function(t,e){this.shape(t),this.setFillStyle(e).fill()},he.prototype.drawImage=function(t,e,n,r,i,o,s,a,c){this.ctx.drawImage(t,e,n,r,i,o,s,a,c)},he.prototype.clip=function(t,e,n){this.ctx.save(),this.shape(t).clip(),e.call(n),this.ctx.restore()},he.prototype.shape=function(t){return this.ctx.beginPath(),t.forEach(function(t,e){this.ctx[0===e?"moveTo":t[0]+"To"].apply(this.ctx,t.slice(1))},this),this.ctx.closePath(),this.ctx},he.prototype.font=function(t,e,n,r,i,o){this.setFillStyle(t).font=[e,n,r,i,o].join(" ")},he.prototype.fontShadow=function(t,e,n,r){this.setVariable("shadowColor",t).setVariable("shadowOffsetY",e).setVariable("shadowOffsetX",n).setVariable("shadowBlur",r)},he.prototype.clearShadow=function(){this.setVariable("shadowColor","rgba(0,0,0,0)")},he.prototype.setOpacity=function(t){this.ctx.globalAlpha=t},he.prototype.setTransform=function(t){this.ctx.translate(t.origin[0],t.origin[1]),this.ctx.transform.apply(this.ctx,t.matrix),this.ctx.translate(-t.origin[0],-t.origin[1])},he.prototype.setVariable=function(t,e){return this.variables[t]!==e&&(this.variables[t]=this.ctx[t]=e),this},he.prototype.text=function(t,e,n){this.ctx.fillText(t,e,n)},he.prototype.backgroundRepeatShape=function(t,e,n,r,i,o,s,a,c){var h=[["line",Math.round(i),Math.round(o)],["line",Math.round(i+s),Math.round(o)],["line",Math.round(i+s),Math.round(a+o)],["line",Math.round(i),Math.round(a+o)]];this.clip(h,function(){this.renderBackgroundRepeat(t,e,n,r,c[3],c[0])},this)},he.prototype.renderBackgroundRepeat=function(t,e,n,r,i,o){var s=Math.round(r.left+e.left+i),a=Math.round(r.top+e.top+o);this.setFillStyle(this.ctx.createPattern(this.resizeImage(t,n),"repeat")),this.ctx.translate(s,a),this.ctx.fill(),this.ctx.translate(-s,-a)},he.prototype.renderBackgroundGradient=function(t,e){t instanceof v&&this.ctx.createLinearGradient(e.left,e.top,e.right,e.bottom)},he.prototype.resizeImage=function(t,n){var r=t.image;if(r.width===n.width&&r.height===n.height)return r;var i,o=e.createElement("canvas");return o.width=n.width,o.height=n.height,i=o.getContext("2d"),i.drawImage(r,0,0,r.width,r.height,0,0,n.width,n.height),o},ue.prototype=Object.create(w.prototype),ue.prototype.getParentStack=function(t){var e=this.parent?this.parent.stack:null;return e?e.ownStacking?e:e.getParentStack(t):t.stack},pe.prototype.testRangeBounds=function(t){var e,n,r,i,o=!1;return t.createRange&&(e=t.createRange(),e.getBoundingClientRect&&(n=t.createElement("boundtest"),n.style.height="123px",n.style.display="block",t.body.appendChild(n),e.selectNode(n),r=e.getBoundingClientRect(),i=r.height,123===i&&(o=!0),t.body.removeChild(n))),o},pe.prototype.testCORS=function(){return(new Image).crossOrigin!==n},de.prototype=Object.create(w.prototype),de.prototype.applyTextTransform=function(){this.node.data=this.transform(this.parent.css("textTransform"))},de.prototype.transform=function(t){var e=this.node.data;switch(t){case"lowercase":return e.toLowerCase();case"capitalize":return e.replace(/(^|\s|:|-|\(|\))([a-z])/g,le);case"uppercase":return e.toUpperCase();default:return e}},fe.prototype=Object.create(l.prototype)})(window,document); \ No newline at end of file diff --git a/src/core.js b/src/core.js index 251bf05..cab192b 100644 --- a/src/core.js +++ b/src/core.js @@ -40,11 +40,19 @@ function renderDocument(document, options, windowWidth, windowHeight) { if (options.removeContainer) { container.parentNode.removeChild(container); } - return renderer.canvas; + return (options.type !== "view" && (node === clonedWindow.document.body || node === clonedWindow.document.documentElement)) ? renderer.canvas : crop(renderer.canvas, bounds); }); }); } +function crop(canvas, bounds) { + var croppedCanvas = document.createElement("canvas"); + croppedCanvas.width = bounds.width; + croppedCanvas.height = bounds.height; + croppedCanvas.getContext("2d").drawImage(canvas, bounds.left, bounds.top, bounds.width, bounds.height, 0, 0, bounds.width, bounds.height); + return croppedCanvas; +} + function documentWidth () { return Math.max( Math.max(document.body.scrollWidth, document.documentElement.scrollWidth),