зеркало из https://github.com/mozilla/gecko-dev.git
79 строки
2.5 KiB
HTML
79 строки
2.5 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>OffscreenCanvas: Test neutering</title>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" href="/tests/SimpleTest/test.css">
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</head>
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<body>
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<canvas id="c" width="64" height="64"></canvas>
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<script>
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SimpleTest.waitForExplicitFinish();
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function runTest() {
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var htmlCanvas = document.getElementById("c");
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var worker = new Worker("offscreencanvas_neuter.js");
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ok(htmlCanvas, "Should have HTML canvas element");
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ok(worker, "Web worker successfully created");
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ok(htmlCanvas.transferControlToOffscreen, "HTMLCanvasElement has transferControlToOffscreen function");
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var offscreenCanvas = htmlCanvas.transferControlToOffscreen();
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ok(offscreenCanvas, "Expected transferControlToOffscreen to succeed");
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/* check html canvas is neuterd */
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is(htmlCanvas.width, 64, "HTML canvas has correct width");
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SimpleTest.doesThrow(
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function() { htmlCanvas.width = 128; },
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"Can't change html canvas' width after transferControlToOffscreen");
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SimpleTest.doesThrow(
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function() { htmlCanvas.height = 128; },
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"Can't change html canvas' height after transferControlToOffscreen");
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ok(!htmlCanvas.getContext("2d"), "Can't getContext after transferControlToOffscreen");
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ok(!htmlCanvas.getContext("webgl"), "Can't getContext after transferControlToOffscreen");
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ok(!htmlCanvas.getContext("webgl2"), "Can't getContext after transferControlToOffscreen");
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worker.postMessage(offscreenCanvas, [offscreenCanvas]);
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/* check parent offscreencanvas is neutered after being transfered */
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SimpleTest.doesThrow(
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function() { offscreenCanvas.width = 128; },
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"Can't change transfered worker canvas width");
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SimpleTest.doesThrow(
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function() { offscreenCanvas.height = 128; },
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"Can't change transfered worker canvas height");
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SimpleTest.doesThrow(
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function() { offscreenCanvas.getContext("2d") },
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"Can't getContext on transfered worker canvas");
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SimpleTest.doesThrow(
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function() { offscreenCanvas.getContext("webgl") },
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"Can't getContext on transfered worker canvas");
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SimpleTest.doesThrow(
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function() { offscreenCanvas.getContext("webgl2") },
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"Can't getContext on transfered worker canvas");
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// Transfer a neutered offscreencanvas should be ok.
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worker.postMessage(offscreenCanvas, [offscreenCanvas]);
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worker.terminate();
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SimpleTest.finish();
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}
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SpecialPowers.pushPrefEnv({'set': [
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['gfx.offscreencanvas.enabled', true],
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['webgl.force-enabled', true],
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]}, runTest);
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</script>
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</body>
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</html>
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