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https://github.com/servo/servo
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46 lines
1.5 KiB
HTML
46 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
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<title>Canvas test: toDataURL.jpeg.alpha</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/canvas-tests.js"></script>
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<link rel="stylesheet" href="/common/canvas-tests.css">
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<body class="show_output">
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<h1>toDataURL.jpeg.alpha</h1>
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<p class="desc">toDataURL with JPEG composites onto black</p>
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<p class="output">Actual output:</p>
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<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
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<p class="output expectedtext">Expected output:<p><img src="toDataURL.jpeg.alpha.png" class="output expected" id="expected" alt="">
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<ul id="d"></ul>
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<script>
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var t = async_test("toDataURL with JPEG composites onto black");
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_addTest(function(canvas, ctx) {
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ctx.fillStyle = 'rgba(128, 255, 128, 0.5)';
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ctx.fillRect(0, 0, 100, 50);
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ctx.globalCompositeOperation = 'destination-over'; // should be ignored by toDataURL
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var data = canvas.toDataURL('image/jpeg');
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ctx.globalCompositeOperation = 'source-over';
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if (!data.match(/^data:image\/jpeg[;,]/)) {
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_assert(true, "true");
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} else {
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ctx.fillStyle = '#f00';
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ctx.fillRect(0, 0, 100, 50);
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var img = new Image();
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deferTest();
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img.onload = t.step_func_done(function ()
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{
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ctx.drawImage(img, 0, 0);
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_assertPixelApprox(canvas, 50,25, 63,127,63,255, "50,25", "63,127,63,255", 8);
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});
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img.src = data;
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}
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});
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</script>
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