third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-strokeRect-in-worker.html - Issue 1775153002: Make OffscreenCanvasRenderingContext2D renderable on a worker

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Side by Side Diff: third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-strokeRect-in-worker.html

Issue 1775153002: Make OffscreenCanvasRenderingContext2D renderable on a worker (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: rebase Created 4 years, 9 months ago

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	1 <!DOCTYPE html>

	2 <html>

	3 <body>

	4 <canvas id='output' width='100' height='100'></canvas>

	5

	6 <script id='myWorker' type='text/worker'>

	7 self.onmessage = function(e) {

	8 var aCanvas = new OffscreenCanvas(100, 100);

	9 var ctx = aCanvas.getContext('2d');

	10 ctx.strokeStyle = 'green';

	11 ctx.strokeRect(25, 25, 50, 50);

	12 var image = aCanvas.transferToImageBitmap();

	13 self.postMessage(image, [image]);

	14 };

	15 </script>

	16

	17 <script>

	18 if (window.testRunner) {

	19 testRunner.waitUntilDone();

	20 }

	21 var blob = new Blob([document.getElementById('myWorker').textContent]);

	22 var worker = new Worker(URL.createObjectURL(blob));

	23 worker.addEventListener('message', msg => {

	24 var outputCtx = document.getElementById('output').getContext('imagebitmap');

	25 outputCtx.transferImageBitmap(msg.data);

	26 if (window.testRunner) {

	27 testRunner.notifyDone();

	28 }

	29 });

	30 worker.postMessage("");

	31 </script>

	32 </body>

	33 </html>

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