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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| function getSVGString(svgNode) { | ||
| svgNode.setAttribute('xlink', 'http://www.w3.org/1999/xlink'); | ||
| var cssStyleText = getCSSStyles(svgNode); | ||
| appendCSS(cssStyleText, svgNode); | ||
|
|
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| var serializer = new XMLSerializer(); | ||
| var svgString = serializer.serializeToString(svgNode); | ||
| svgString = svgString.replace(/(\w+)?:?xlink=/g, 'xmlns:xlink='); // Fix root xlink without namespace | ||
| svgString = svgString.replace(/NS\d+:href/g, 'xlink:href'); // Safari NS namespace fix | ||
|
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| return svgString; | ||
|
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| function getCSSStyles(parentElement) { | ||
| var selectorTextArr = []; | ||
|
|
||
| // Add Parent element Id and Classes to the list | ||
| selectorTextArr.push('#' + parentElement.id); | ||
| for (var c = 0; c < parentElement.classList.length; c++) | ||
| if (!contains('.' + parentElement.classList[c], selectorTextArr)) | ||
| selectorTextArr.push('.' + parentElement.classList[c]); | ||
|
|
||
| // Add Children element Ids and Classes to the list | ||
| var nodes = parentElement.getElementsByTagName("*"); | ||
| for (var i = 0; i < nodes.length; i++) { | ||
| var id = nodes[i].id; | ||
| if (!contains('#' + id, selectorTextArr)) | ||
| selectorTextArr.push('#' + id); | ||
|
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||
| var classes = nodes[i].classList; | ||
| for (var c = 0; c < classes.length; c++) | ||
| if (!contains('.' + classes[c], selectorTextArr)) | ||
| selectorTextArr.push('.' + classes[c]); | ||
| } | ||
|
|
||
| // Extract CSS Rules | ||
| var extractedCSSText = ""; | ||
| for (var i = 0; i < document.styleSheets.length; i++) { | ||
| var s = document.styleSheets[i]; | ||
|
|
||
| try { | ||
| if (!s.cssRules) continue; | ||
| } catch (e) { | ||
| if (e.name !== 'SecurityError') throw e; // for Firefox | ||
| continue; | ||
| } | ||
|
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||
| var cssRules = s.cssRules; | ||
| for (var r = 0; r < cssRules.length; r++) { | ||
| if (contains(cssRules[r].selectorText, selectorTextArr)) | ||
| extractedCSSText += cssRules[r].cssText; | ||
| } | ||
| } | ||
|
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|
|
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| return extractedCSSText; | ||
|
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| function contains(str, arr) { | ||
| return arr.indexOf(str) === -1 ? false : true; | ||
| } | ||
|
|
||
| } | ||
|
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| function appendCSS(cssText, element) { | ||
| var styleElement = document.createElement("style"); | ||
| styleElement.setAttribute("type", "text/css"); | ||
| styleElement.innerHTML = cssText; | ||
| var refNode = element.hasChildNodes() ? element.children[0] : null; | ||
| element.insertBefore(styleElement, refNode); | ||
| } | ||
| } | ||
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|
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| function svgString2Image(svgString, width, height, format, callback) { | ||
| var format = format ? format : 'png'; | ||
|
|
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| var imgsrc = 'data:image/svg+xml;base64,' + btoa(unescape(encodeURIComponent(svgString))); // Convert SVG string to data URL | ||
|
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| var canvas = document.createElement("canvas"); | ||
| var context = canvas.getContext("2d"); | ||
|
|
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| canvas.width = width; | ||
| canvas.height = height; | ||
|
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| var image = new Image(); | ||
| image.onload = function () { | ||
| context.clearRect(0, 0, width, height); | ||
| context.drawImage(image, 0, 0, width, height); | ||
|
|
||
| canvas.toBlob(function (blob) { | ||
| var filesize = Math.round(blob.length / 1024) + ' KB'; | ||
| if (callback) callback(blob, filesize); | ||
| }); | ||
|
|
||
|
|
||
| }; | ||
|
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| image.src = imgsrc; | ||
| } | ||
|
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||
| export { | ||
| getSVGString, | ||
| svgString2Image | ||
| }; |