mirror of
https://github.com/servo/servo.git
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43 lines
1 KiB
HTML
43 lines
1 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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</head>
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<style>
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html, body {
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margin: 0;
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}
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</style>
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<body>
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<canvas id="dest" height="100" width="100"></canvas>
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<script>
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var sourceWidth = 100;
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var sourceHeight = 100;
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var smoothingEnabled = false;
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var destCanvas = document.getElementById('dest');
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var sourceImg = document.createElement('img');
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sourceImg.src = '../2x2.png'
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sourceImg.width = sourceWidth;
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sourceImg.height = sourceHeight;
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var destCtx = destCanvas.getContext('2d');
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destCtx.fillStyle = "#FF0000";
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destCtx.fillRect(0, 0, destCanvas.width, destCanvas.height);
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destCtx.imageSmoothingEnabled = smoothingEnabled;
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// The destination rectangle has negative width and height
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// An exception is raised and nothing is drawn
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try {
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destCtx.drawImage(sourceImg, 25, 50, 50, 0, 0, -100, -100);
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// It makes the test fail if the exception is not thrown
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destCtx.fillStyle = "#0000FF";
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destCtx.fillRect(0, 0, destCanvas.width, destCanvas.height);
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}
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catch(err) {
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console.err("Exception Thrown");
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}
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</script>
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</body>
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</html>
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