38 lines
1.3 KiB
HTML
38 lines
1.3 KiB
HTML
<!-- Test for https://bugs.webkit.org/show_bug.cgi?id=46319 -->
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<head>
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<script src="resources/repaint.js"></script>
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</head>
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<body>
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<canvas id="canvas" width="100" height="100"></canvas>
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<script>
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var canvas = document.getElementById('canvas');
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var ctx = canvas.getContext('2d');
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// prepare imagedata
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ctx.fillStyle = "rgb(255, 0, 0)"; ctx.fillRect(0, 0, 100, 100); // red background
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ctx.fillStyle = "rgb(0, 255, 0)"; ctx.fillRect(10, 10, 10, 10); // inset green square
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var imageDataGreen = ctx.getImageData(10, 10, 10, 10);
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var imageDataRedWithInsetGreen = ctx.getImageData(0, 0, 30, 30);
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// clear canvas to dark green
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ctx.fillStyle = "rgb(0, 128, 0)";
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ctx.fillRect(0, 0, 100, 100);
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// fill target locations with dark red
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ctx.fillStyle = "rgb(128, 0, 0)";
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ctx.fillRect(0, 0, 10, 10);
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ctx.fillRect(40, 40, 10, 10);
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ctx.fillRect(80, 80, 10, 10);
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function repaintTest()
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{
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// patch up red squares with putImageData
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ctx.putImageData(imageDataGreen, 0, 0);
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ctx.putImageData(imageDataGreen, 40, 40);
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ctx.putImageData(imageDataRedWithInsetGreen, 70, 70, 10, 10, 10, 10);
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}
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window.onload = runRepaintTest;
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</script>
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</body>
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