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57 lines
2.0 KiB
HTML
57 lines
2.0 KiB
HTML
<!DOCTYPE HTML>
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<title>Canvas test: 2d.drawImage.negativedest</title>
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<script src="/MochiKit/MochiKit.js"></script>
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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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<body>
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<canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
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<script>
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function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
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var pixel = ctx.getImageData(x, y, 1, 1);
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var pr = pixel.data[0],
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pg = pixel.data[1],
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pb = pixel.data[2],
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pa = pixel.data[3];
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ok(r-d <= pr && pr <= r+d &&
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g-d <= pg && pg <= g+d &&
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b-d <= pb && pb <= b+d &&
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a-d <= pa && pa <= a+d,
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"pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
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}
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SimpleTest.waitForExplicitFinish();
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MochiKit.DOM.addLoadEvent(function () {
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var canvas = document.getElementById('c');
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var ctx = canvas.getContext('2d');
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var _thrown_outer = false;
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try {
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ctx.fillStyle = '#f00';
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ctx.fillRect(0, 0, 100, 50);
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ctx.drawImage(document.getElementById('ggrr-256x256.png'), 100, 78, 50, 50, 0, 50, 50, -50);
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ctx.drawImage(document.getElementById('ggrr-256x256.png'), 100, 128, 50, -50, 100, 50, -50, -50);
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isPixel(ctx, 1,1, 0,255,0,255, "1,1", "0,255,0,255", 2);
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isPixel(ctx, 1,48, 0,255,0,255, "1,48", "0,255,0,255", 2);
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isPixel(ctx, 98,1, 0,255,0,255, "98,1", "0,255,0,255", 2);
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isPixel(ctx, 98,48, 0,255,0,255, "98,48", "0,255,0,255", 2);
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isPixel(ctx, 48,1, 0,255,0,255, "48,1", "0,255,0,255", 2);
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isPixel(ctx, 48,48, 0,255,0,255, "48,48", "0,255,0,255", 2);
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isPixel(ctx, 51,1, 0,255,0,255, "51,1", "0,255,0,255", 2);
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isPixel(ctx, 51,48, 0,255,0,255, "51,48", "0,255,0,255", 2);
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isPixel(ctx, 25,25, 0,255,0,255, "25,25", "0,255,0,255", 2);
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isPixel(ctx, 75,25, 0,255,0,255, "75,25", "0,255,0,255", 2);
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} catch (e) {
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_thrown_outer = true;
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}
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todo(!_thrown_outer, 'should not throw exception');
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SimpleTest.finish();
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});
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</script>
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<img src="image_ggrr-256x256.png" id="ggrr-256x256.png" class="resource">
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