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| (Empty) | |
| 1 <!DOCTYPE HTML> |
| 2 |
| 3 <!-- READ BEFORE UPDATING: |
| 4 If this test is updated make sure to increment the "revision" value of the |
| 5 associated test in content/test/gpu/gpu_tests/pixel_test_pages.py. This will ens
ure |
| 6 that the baseline images are regenerated on the next run. |
| 7 --> |
| 8 |
| 9 <html> |
| 10 <head> |
| 11 <title>OffscreenCanvas2d.commit with resizing: red rectangle in the middle.</tit
le> |
| 12 <style type="text/css"> |
| 13 .nomargin { |
| 14 margin: 0px auto; |
| 15 } |
| 16 </style> |
| 17 <script id="myWorker" type="text/worker"> |
| 18 self.onmessage = function(e) { |
| 19 var transfered = e.data; |
| 20 |
| 21 // Resize offscreenCanvas from 200X200 to 40X50. |
| 22 transfered.width = 40; |
| 23 transfered.height = 50; |
| 24 var ctx2d = transfered.getContext('2d'); |
| 25 |
| 26 // The resultant image should be 100X80 red-color rectangle in the middle |
| 27 // of green background. |
| 28 ctx2d.fillStyle = "green"; |
| 29 ctx2d.fillRect(0, 0, transfered.width, transfered.height); |
| 30 ctx2d.fillStyle = "red"; |
| 31 ctx2d.fillRect(10, 10, 20, 20); |
| 32 ctx2d.commit(); |
| 33 |
| 34 self.postMessage(""); |
| 35 }; |
| 36 </script> |
| 37 <script> |
| 38 var g_swapsBeforeAck = 15; |
| 39 |
| 40 function makeWorker(script) |
| 41 { |
| 42 var blob = new Blob([script]); |
| 43 return new Worker(URL.createObjectURL(blob)); |
| 44 } |
| 45 |
| 46 function waitForFinish() |
| 47 { |
| 48 if (g_swapsBeforeAck == 0) { |
| 49 domAutomationController.setAutomationId(1); |
| 50 domAutomationController.send("SUCCESS"); |
| 51 } else { |
| 52 g_swapsBeforeAck--; |
| 53 document.getElementById('container').style.zIndex = g_swapsBeforeAck + 1; |
| 54 window.webkitRequestAnimationFrame(waitForFinish); |
| 55 } |
| 56 } |
| 57 |
| 58 function main() |
| 59 { |
| 60 var canvas2D = document.getElementById("c"); |
| 61 var offscreenCanvas = canvas2D.transferControlToOffscreen(); |
| 62 var worker = makeWorker(document.getElementById("myWorker").textContent); |
| 63 worker.onmessage = function (e) { |
| 64 waitForFinish(); |
| 65 }; |
| 66 worker.postMessage(offscreenCanvas, [offscreenCanvas]); |
| 67 } |
| 68 </script> |
| 69 </head> |
| 70 <body onload="main()"> |
| 71 <div style="position:relative; width:200px; height:200px; background-color:white
"> |
| 72 </div> |
| 73 <div id="container" style="position:absolute; top:0px; left:0px"> |
| 74 <canvas id="c" width="200" height="200" class="nomargin"></canvas> |
| 75 </div> |
| 76 </body> |
| 77 </html> |
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Chromium Code Reviews
Issue 2588053003:
Make OffscreenCanvas resizable (Closed)
