Html HTML5 画布转 PDF
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HTML5 canvas to PDF
提问by justin
I am working in HTML5 and using canvas as a designing tool. However, I want to save my canvas in a jpeg file with a default of image/png and I want to show the preview of my canvas in a PDF.
我正在使用 HTML5 并使用画布作为设计工具。但是,我想将我的画布保存在默认为 image/png 的 jpeg 文件中,并且我想在 PDF 中显示我的画布的预览。
回答by Razan Paul
A good approach is to use a combination of jspdf.js and html2canvas.
一个好的方法是结合使用 jspdf.js 和 html2canvas。
<canvas id="canvas" width="480" height="320"></canvas>
<button id="download">Download Pdf</button>
html2canvas($("#canvas"), { onrendered: function(canvas) {
var imgData = canvas.toDataURL('image/png');
var doc = new jsPDF('p', 'mm');
doc.addImage(imgData, 'PNG', 10, 10);
doc.save('sample-file.pdf');
}
});
jsfiddle: http://jsfiddle.net/p4s5k59s/1222/
jsfiddle:http: //jsfiddle.net/p4s5k59s/1222/
Tested in Google Chrome 38, IE11 and Firefox 34.
For Safari you might need to change the image format from PNG to JPEG.
在 Google Chrome 38、IE11 和 Firefox 34 中测试。
对于 Safari,您可能需要将图像格式从 PNG 更改为 JPEG。