зеркало из https://github.com/mozilla/gecko-dev.git
82 строки
2.8 KiB
HTML
82 строки
2.8 KiB
HTML
<!DOCTYPE HTML>
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<title>Canvas test: 2d.fill.pattern.imageSmoothingEnabled</title>
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<!-- Testing: That imageSmoothingEnabled is taken into account when doing pattern fills-->
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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="128" height="128"><p class="fallback">FAIL (fallback content)</p></canvas>
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<img id="img">
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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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function isNotPixel(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+"; did not expect "+colour+" +/- "+d);
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}
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SimpleTest.waitForExplicitFinish();
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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 img = document.getElementById("img");
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img.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==";
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img.onload = function () {
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ctx.mozImageSmoothingEnabled = false;
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ctx.save();
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ctx.fillStyle = "rgb(127, 127, 127);";
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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ctx.scale(16, 16);
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ctx.fillStyle = ctx.createPattern(img, 'no-repeat');
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ctx.fillRect(0, 0, 8, 8);
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ctx.restore();
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// Check for nearest filtering.
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isPixel(ctx, 0,0, 0,0,0,255, "0,0", "0,0,0,255", 0);
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isPixel(ctx, 14,14, 0,0,0,255, "14,14", "0,0,0,255", 0);
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isPixel(ctx, 15,15, 0,0,0,255, "15,15", "0,0,0,255", 0);
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isPixel(ctx, 16,16, 255,0,0,255, "16,16", "255,0,0,255", 0);
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ctx.mozImageSmoothingEnabled = true;
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ctx.save();
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ctx.fillStyle = "rgb(127, 127, 127);";
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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ctx.scale(16, 16);
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ctx.fillStyle = ctx.createPattern(img, 'no-repeat');
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ctx.fillRect(0, 0, 8, 8);
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ctx.restore();
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// Check that nearest filtering is not happening.
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isPixel(ctx, 0,0, 0,0,0,255, "0,0", "0,0,0,255", 0);
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isNotPixel(ctx, 14,14, 0,0,0,255, "14,14", "0,0,0,255", 0);
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isNotPixel(ctx, 15,15, 0,0,0,255, "15,15", "0,0,0,255", 0);
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isNotPixel(ctx, 16,16, 255,0,0,255, "16,16", "255,0,0,255", 0);
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isPixel(ctx, 32,32, 255,0,0,255, "32,32", "255,0,0,255", 0);
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SimpleTest.finish();
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}
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});
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</script>
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