| OLD | NEW |
|---|
| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <script src="../../resources/js-test.js"></script> |
| 4 <body> |
| 5 <script id="myWorker" type="text/worker"> |
| 6 self.onmessage = function(e) { |
| 7 var aCanvas = new OffscreenCanvas(50, 50); |
| 8 try { |
| 9 var ctx = aCanvas.getContext('2d'); |
| 10 if (toString.call(ctx) != '[object OffscreenCanvasRenderingContext2D]') { |
| 11 self.postMessage({ outcome : "error", errorMessage : |
| 12 "aCanvas.getContext('2d') does not return [object OffscreenCanvasR
enderingContext2D]" }); |
| 13 } else { |
| 14 self.postMessage({ outcome : "success", errorMessage : "" }); |
| 15 } |
| 16 } catch (e) { |
| 17 self.postMessage({ outcome : "error", errorMessage : e }); |
| 18 } |
| 19 }; |
| 20 </script> |
| 21 |
| 22 <script> |
| 23 jsTestIsAsync = true; |
| 24 description("Tests that the 2D context of OffscreenCanvas can be constructed on
a worker thread."); |
| 25 |
| 26 function makeWorker(script) { |
| 27 var blob = new Blob([script]); |
| 28 return new Worker(URL.createObjectURL(blob)); |
| 29 } |
| 30 |
| 31 function handleMessageFromWorker(msg) { |
| 32 switch (msg.data.outcome) { |
| 33 case 'success': |
| 34 testPassed("getContext('2d') correctly returns [object OffscreenCanvasRend
eringContext2D]."); |
| 35 break; |
| 36 case 'error': |
| 37 testFailed(msg.data.errorMessage); |
| 38 break; |
| 39 default: |
| 40 testFailed("Unexpected failure"); |
| 41 break; |
| 42 } |
| 43 finishJSTest(); |
| 44 } |
| 45 |
| 46 var worker = makeWorker(document.getElementById('myWorker').textContent); |
| 47 worker.addEventListener('message', handleMessageFromWorker); |
| 48 worker.postMessage(""); |
| 49 </script> |
| 50 |
| 51 </body> |
| 52 </html> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1748163003:
Add rendering context and rendering 2D context to OffscreenCanvas (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master