52 lines
1.3 KiB
HTML
52 lines
1.3 KiB
HTML
<head>
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<style>
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canvas {
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object-fit: contain;
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border: 1px solid black;
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width: 200px;
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height: 100px;
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}
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</style>
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</head>
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<body>
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<canvas id="canvas" width="200" height="200"></canvas>
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<pre id="layers"></pre>
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<script>
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if (window.testRunner) {
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testRunner.dumpAsText();
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testRunner.waitUntilDone();
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}
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var ctx;
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function repaintTest()
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{
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if (window.testRunner)
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testRunner.displayAndTrackRepaints();
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ctx.fillStyle = "rgb(0, 0, 128)";
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ctx.fillRect(40, 40, 10, 10);
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if (window.internals)
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document.getElementById('layers').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
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if (window.testRunner)
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testRunner.notifyDone();
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}
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function startTest()
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{
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var canvas = document.getElementById('canvas');
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ctx = canvas.getContext('2d');
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ctx.fillStyle = "rgb(0, 128, 0)";
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ctx.fillRect(0, 0, 200, 200);
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requestAnimationFrame(() => {
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repaintTest();
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});
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}
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window.addEventListener('load', startTest, false);
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</script>
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</body>
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