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comparison: image/test/mochitest/test_drawDiscardedImage.html
image/test/mochitest/test_drawDiscardedImage.html
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:08897d2169f6 |
|---|---|
| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <!-- | |
| 4 https://bugzilla.mozilla.org/show_bug.cgi?id=731419 | |
| 5 --> | |
| 6 <head> | |
| 7 <title>Test for Bug 731419 - Draw an ostensibly discarded image to a canvas</title> | |
| 8 <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> | |
| 9 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> | |
| 10 </head> | |
| 11 | |
| 12 <body> | |
| 13 | |
| 14 <!-- | |
| 15 Load an image in an iframe, then draw that image to a canvas. Then set the | |
| 16 iframe to display:none (after bug 731419, this causes the image's decoded | |
| 17 data to be discarded) and draw the image to a canvas again. We should draw | |
| 18 the same image data both times. | |
| 19 --> | |
| 20 | |
| 21 <script> | |
| 22 | |
| 23 SimpleTest.waitForExplicitFinish(); | |
| 24 | |
| 25 var data1; | |
| 26 | |
| 27 function drawImage() | |
| 28 { | |
| 29 var canvas = document.getElementById('canvas'); | |
| 30 var ctx = canvas.getContext('2d'); | |
| 31 var iframeDoc = document.getElementById('iframe').contentDocument; | |
| 32 | |
| 33 ctx.clearRect(0, 0, canvas.height, canvas.width); | |
| 34 ctx.drawImage(iframeDoc.getElementById('image'), 0, 0); | |
| 35 return canvas.toDataURL(); | |
| 36 } | |
| 37 | |
| 38 function iframeLoad() | |
| 39 { | |
| 40 data1 = drawImage(); | |
| 41 document.getElementById('iframe').style.display = 'none'; | |
| 42 | |
| 43 // Spin the event loop a few times to give the image in the display:none | |
| 44 // iframe a chance to be discarded. | |
| 45 SimpleTest.executeSoon(function() { | |
| 46 SimpleTest.executeSoon(function() { | |
| 47 SimpleTest.executeSoon(function() { | |
| 48 step2(); | |
| 49 }); | |
| 50 }); | |
| 51 }); | |
| 52 } | |
| 53 | |
| 54 function step2() | |
| 55 { | |
| 56 is(drawImage(), data1, "Same image before and after iframe display:none"); | |
| 57 SimpleTest.finish(); | |
| 58 } | |
| 59 | |
| 60 </script> | |
| 61 | |
| 62 <canvas id='canvas'></canvas> | |
| 63 | |
| 64 <iframe id='iframe' onload='iframeLoad()' src='data:text/html,<img id="image" | |
| 65 src="data:image/png;base64, | |
| 66 iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAADRElEQVQ4EQXBTWgcZQCA4ff7ZmZ3 | |
| 67 NpvNZLObTWpCuoZGIxWJplAKbVUKavUiHrQHaRG1XrV4SNuD4MFcRDwUoR4qEq2gFUlBEWmtppYi | |
| 68 acSmMakxtfkx/5tNdmd35/8bn0cAzJ7IXwKGH/q8NDF48vy+7vk/3tzVXDs8nj9cAAiDcD70gwVi | |
| 69 vvvr4tsjAAAAAmD2RD4GOL34wge21XHsnHWh9/aUjX1pC4C1UpXrP08zN7vMvvujPx3P/PD+0VH3 | |
| 70 BoAcTspXAbK9iuGe78+csy70ZnsVvh+xWQ8p1QI8dNK7CiT9CmeO28/4ZsuVX9/IvQwgmzLaU9LS | |
| 71 AGh/3KJ5jw6A6ynyL7Xx7UCORiwQGRN0g7C4m4FX9poNV35681ShU6ZbxKDRLJVuZQl9RdSQRB4c | |
| 72 OtDGoQNtPGHBuh0SaAa+ZvLjHYt8fwfZrpTl2cFp2ZwVDyQzSgLgVIndGN/tIP/c61y/WWb14gaV | |
| 73 asTWioPSDabnfCqVkK7BHKHtPK0n06oFGQHgewJtbw8AujGNkYTNpTJxbYfaygqR0piYkaRkhMya | |
| 74 eI2oX9dTQRIFmtrmz7EGpS9vESZjAN7tfo/UL2PouoZwbfxIo9jaoLWlzI7jEPmhLjVEbXs5IPAE | |
| 75 jx5M0Z5RZDJwqjCENFN8XBtmOP0FXq1O6NR5snsRtsv4C+voCdHQpcfVtTn/xUKXTrMlyfck6BCC | |
| 76 a02fkDZDqirF5JVrRA8ewagu8NbADN6az9btMoTqjnasKDTHjp5PSM3I5DQy7UliZbCz7bCwFDD/ | |
| 77 b52h3BCviVHOHv2bvmydyvwOM5MSmch9Ji4/SxMNcaNJTw707zdJmBqeo+G5BuO/V6AzQ5Oo01MI | |
| 78 KBaTOOis3rPZrKeqrbn2hwXA10fY7zvicqeZKPQ8YpKxJCgIpEQXisBVhG6MYcQ0pGJp2XWnSpx8 | |
| 79 52o0ogF8c5/ltMlGIlYHo0qQrq9HxHWFvx3RqCoCFzwn4L+tiIVV5Y5MhWc/mlDnATQAgMkynbMb | |
| 80 opoN4z2hUAlPBdpO6FNp+JTtkPVaHE7NYX94K/xqrBT/BvwDIAAAgALQAfT1aWJwtyYea9VEXoAo | |
| 81 RfHGYhTfvRfF48BdYB3YAPgfnOuE39kFlREAAAAASUVORK5CYII=">'></iframe> | |
| 82 | |
| 83 </body> | |
| 84 </html> | |
| 85 |
