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39 lines
1.2 KiB
HTML
39 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<link rel=match href=drawimage_canvas_10_ref.html>
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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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<canvas id="dest" height="100" width="100"></canvas>
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<script>
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var sourceWidth = 50;
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var sourceHeight = 50;
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var smoothingEnabled = false;
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var destCanvas = document.getElementById('dest');
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var sourceCanvas = document.createElement('canvas');
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sourceCanvas.width = sourceWidth;
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sourceCanvas.height = sourceHeight;
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var sourceCtx = sourceCanvas.getContext('2d');
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sourceCtx.fillStyle = "#00FFFF";
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sourceCtx.fillRect(0, 0, sourceWidth, sourceHeight);
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sourceCtx.fillStyle = "#000000";
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sourceCtx.fillRect(5,5,40,40);
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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 is larger than the destination canvas
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// When the destination rectangle is outside the destination image (the scratch bitmap),
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// the pixels that land outside the scratch bitmap are discarded,
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// as if the destination was an infinite canvas whose rendering was
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// clipped to the dimensions of the scratch bitmap.
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destCtx.drawImage(sourceCanvas, 0, 0, 50, 50, 0, 0, 200, 200);
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</script>
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