<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>HtmlToPdf</title> <link rel="stylesheet" href="./css/index.css"/> <script type="text/javascript" src="./js/canvg2.js"></script> <script type="text/javascript" src="./js/html2canvas-0.4.1.js"></script> <script type="text/javascript" src="./js/jspdf.min.js"></script> <script type="text/javascript" src="./js/jquery-2.1.4.min.js"></script></head><body><div class="container"> <input id="downloadPdf" type="button" value="Download PDF"/></div><div id="pdfContainer" class="container"> <div>点击上面的按钮，蓝色框区域内的内容将会被导出为pdf.</div> <svg xmlns="http://www.w3.org/2000/svg" version="1.1"> <defs> <filter id="MyFilter" filterUnits="userSpaceOnUse" x="0" y="0" width="200" height="120"> <feGaussianBlur in="SourceAlpha" stdDeviation="4" result="blur"></feGaussianBlur> <feOffset in="blur" dx="4" dy="4" result="offsetBlur"></feOffset> <feSpecularLighting in="blur" surfaceScale="5" specularConstant=".75" specularExponent="20" lighting-color="#bbbbbb" result="specOut"> <fePointLight x="-5000" y="-10000" z="20000"></fePointLight> </feSpecularLighting> <feComposite in="specOut" in2="SourceAlpha" operator="in" result="specOut"></feComposite> <feComposite in="SourceGraphic" in2="specOut" operator="arithmetic" k1="0" k2="1" k3="1" k4="0"result="litPaint"></feComposite> <feMerge> <feMergeNode in="offsetBlur"></feMergeNode> <feMergeNode in="litPaint"></feMergeNode> </feMerge> </filter> </defs> <rect x="1" y="1" width="198" height="118" fill="#cccccc"></rect> <g filter="url(#MyFilter)"> <path fill="none" stroke="#D90000" stroke-width="10" d="M50,90 C0,90 0,30 50,30 L150,30 C200,30 200,90 150,90 z"></path> <text fill="#FFFFFF" stroke="black" font-size="45" font-family="Verdana" x="52" y="76">SVG</text> </g> </svg></div><script type="text/javascript"> $(function () { $("#downloadPdf").click(function () { var targetDom = $("#pdfContainer"); //把需要导出的pdf内容clone一份，这样对它进行转换、微调等操作时才不会影响原来界面 var copyDom = targetDom.clone(); //新的div宽高跟原来一样，高度设置成自适应，这样才能完整显示节点中的所有内容（比如说表格滚动条中的内容） copyDom.width(targetDom.width() "px"); copyDom.height(targetDom.height() "px"); $('body').append(copyDom);//ps:这里一定要先把copyDom append到body下，然后再进行后续的glyphicons2canvas处理，不然会导致图标为空 svg2canvas(copyDom); html2canvas(copyDom, { onrendered: function (canvas) { var imgData = canvas.toDataURL('image/jpeg'); var img = new Image(); img.src = imgData; //根据图片的尺寸设置pdf的规格，要在图片加载成功时执行，之所以要*0.225是因为比例问题 img.onload = function () { //此处需要注意，pdf横置和竖置两个属性，需要根据宽高的比例来调整，不然会出现显示不完全的问题 if (this.width > this.height) { var doc = new jsPDF('l', 'mm', [this.width * 0.225, this.height * 0.225]); } else { var doc = new jsPDF('p', 'mm', [this.width * 0.225, this.height * 0.225]); } doc.addImage(imgData, 'jpeg', 0, 0, this.width * 0.225, this.height * 0.225); //根据下载保存成不同的文件名 doc.save('pdf_' new Date().getTime() '.pdf'); }; //删除复制出来的div copyDom.remove(); }, background: "#fff", //这里给生成的图片默认背景，不然的话，如果你的html根节点没设置背景的话，会用黑色填充。 allowTaint: true //避免一些不识别的图片干扰，默认为false，遇到不识别的图片干扰则会停止处理html2canvas }); }); }); function svg2canvas(targetElem) { var svgElem = targetElem.find('svg'); svgElem.each(function (index, node) { var parentNode = node.parentNode; //由于现在的IE不支持直接对svg标签node取内容，所以需要在当前标签外面套一层div，通过外层div的innerHTML属性来获取 var tempNode = document.createElement('div'); tempNode.appendChild(node); var svg = tempNode.innerHTML; var canvas = document.createElement('canvas'); //转换 canvg(canvas, svg); parentNode.appendChild(canvas); }); } function glyphicons2canvas(targetElem, fontClassName, fontFamilyName) { var iconElems = targetElem.find('.' fontClassName); iconElems.each(function (index, inconNode) { var fontSize = $(inconNode).css("font-size"); var iconColor = $(inconNode).css("color"); var styleContent = $(inconNode).attr('style'); //去掉"px" fontSize = fontSize.replace("px", ""); var charCode = getCharCodeByGlyphiconsName(iconName); var myCanvas = document.createElement('canvas'); //把canva宽高各增加2是为了显示图标完整 myCanvas.width = parseInt(fontSize) 2; myCanvas.height = parseInt(fontSize) 2; myCanvas.style = styleContent; var ctx = myCanvas.getContext('2d'); //设置绘图内容的颜色 ctx.fillStyle = iconColor; //设置绘图的字体大小以及font-family的名字 ctx.font = fontSize 'px ' fontFamilyName; ctx.fillText(String.fromCharCode(charCode), 1, parseInt(fontSize) 1); $(inconNode).replaceWith(myCanvas); }); } //根据glyphicons/glyphicon图标的类名获取到对应的char code function getCharCodeByGlyphiconsName(iconName) { switch (iconName) { case("glyphicons-resize-full"): return "0xE216"; case ("glyphicons-chevron-left"): return "0xE225"; default: return ""; } }</script></body></html>
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