canvas-1b.xhtml (940B)
1 <?xml version="1.0" encoding="UTF-8"?> 2 <svg xmlns="http://www.w3.org/2000/svg" 3 xmlns:xlink="http://www.w3.org/1999/xlink" 4 version="1.1"> 5 <!-- use an empty g to force filters.svg to load before onload --> 6 <use xlink:href="../filters.svg#empty" /> 7 <foreignObject filter="url(../filters.svg#ThresholdRGB)" x="0" y="0" height="100%" width="100%"> 8 <html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"> 9 <body> 10 <canvas id="canvas" width="200" height="200"></canvas> 11 <script> 12 function draw() { 13 var video = document.getElementById("video"); 14 var canvas = document.getElementById("canvas"); 15 var ctx = canvas.getContext("2d"); 16 try { 17 ctx.drawImage(video, 0, 0, video.videoWidth, video.videoHeight); 18 } catch (e) { 19 } 20 document.documentElement.removeAttribute("class"); 21 } 22 </script> 23 <video id="video" src="black140x100.webm" onloadeddata="draw()" style="opacity:0"></video> 24 </body> 25 </html> 26 </foreignObject> 27 </svg>