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| (Empty) |
| 1 <html> | |
| 2 <head> | |
| 3 <script> | |
| 4 if (window.testRunner) { | |
| 5 testRunner.dumpAsText(); | |
| 6 testRunner.waitUntilDone(); | |
| 7 } | |
| 8 | |
| 9 function log(message) { | |
| 10 var console = document.getElementById('log'); | |
| 11 console.appendChild(document.createTextNode(message)); | |
| 12 console.appendChild(document.createElement('br')); | |
| 13 } | |
| 14 | |
| 15 function loaded() { | |
| 16 var canvas = document.getElementById('canvas'); | |
| 17 var ctx = canvas.getContext("2d"); | |
| 18 var img = document.getElementById('img'); | |
| 19 log('Starting...'); | |
| 20 | |
| 21 // This should taint the canvas by rendering an SVG on to it via the pattern | |
| 22 // route. | |
| 23 var p = ctx.createPattern(img, 'repeat'); | |
| 24 ctx.fillStyle = p; | |
| 25 ctx.fillRect(0, 0, 100, 100); | |
| 26 | |
| 27 try { | |
| 28 // This should fail as the canvas should be tainted. | |
| 29 var data = ctx.getImageData(0, 0, 10, 10); | |
| 30 log('Oh dear -- missing exception!'); | |
| 31 } catch (e) { | |
| 32 log('Exception: ' + e.name); | |
| 33 if (window.testRunner) | |
| 34 testRunner.notifyDone(); | |
| 35 } | |
| 36 } | |
| 37 </script> | |
| 38 </head> | |
| 39 <body> | |
| 40 Let's check that rendering an SVG pattern to a canvas taints it! | |
| 41 <p> | |
| 42 See https://bugs.webkit.org/show_bug.cgi?id=36838 | |
| 43 <div id="log"></div> | |
| 44 <canvas id="canvas" width="100" height="100"></canvas> | |
| 45 <img id="img" onload="loaded()" src="resources/empty.svg"></img> | |
| 46 </body> | |
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Chromium Code Reviews
Issue 22604008:
Allow SVG images to not taint the canvas with drawImage/drawPattern (Closed)
Base URL: svn://svn.chromium.org/blink/trunk