| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/canvas-tests.js"></script> |
| <link rel="help" href="https://html.spec.whatwg.org/#offscreencontext2d-commit"> |
| |
| <script id="myWorker" type="text/worker"> |
| |
| function testCommitPushesContents(offscreenCanvas) { |
| try { |
| var ctx = offscreenCanvas.getContext('2d'); |
| ctx.fillStyle = "#0f0"; |
| ctx.fillRect(0, 0, 10, 10); |
| ctx.commit(); |
| return true; |
| } catch(e) { |
| return false; |
| } |
| } |
| |
| function testCommitException() { |
| var offscreenCanvas = new OffscreenCanvas(10, 10); |
| var ctx = offscreenCanvas.getContext('2d'); |
| ctx.fillStyle = "#0f0"; |
| ctx.fillRect(0, 0, 10, 10); |
| return true; |
| } |
| |
| self.onmessage = function(e) { |
| switch (e.data.msg) { |
| case 'test1': |
| self.postMessage(testCommitPushesContents(e.data.data)); |
| break; |
| case 'test2': |
| self.postMessage(testCommitException()); |
| break; |
| } |
| }; |
| |
| </script> |
| |
| <script> |
| |
| function verifyPlaceholder(placeholder) { |
| var canvas = document.createElement('canvas'); |
| canvas.width = canvas.height = 10; |
| var ctx = canvas.getContext('2d'); |
| ctx.drawImage(placeholder, 0, 0); |
| _assertPixel(canvas, 5,5, 0,255,0,255, "5,5", "0,255,0,255"); |
| } |
| |
| function makeWorker(test) { |
| var blob = new Blob([document.getElementById("myWorker").textContent]); |
| var worker = new Worker(URL.createObjectURL(blob)); |
| worker.onerror = test.unreached_func("error"); |
| return worker; |
| } |
| |
| async_test(function(t) { |
| var placeholder = document.createElement('canvas'); |
| placeholder.width = placeholder.height = 10; |
| var offscreenCanvas = placeholder.transferControlToOffscreen(); |
| var worker = makeWorker(t); |
| worker.addEventListener('message', t.step_func_done(function(msg) { |
| assert_true(msg.data); |
| verifyPlaceholder(placeholder); |
| })); |
| worker.postMessage({msg: 'test1', data: offscreenCanvas}, [offscreenCanvas]); |
| }, "Test that calling OffscreenCanvas's commit pushes its contents to its placeholder."); |
| |
| async_test(function(t) { |
| var worker = makeWorker(t); |
| worker.addEventListener('message', t.step_func_done(function(msg) { |
| assert_true(msg.data); |
| })); |
| worker.postMessage({msg: 'test2'}); |
| }, "Test that calling commit on an OffscreenCanvas that is not transferred from a HTMLCanvasElement throws an exception in a worker."); |
| |
| </script> |
