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78 lines
2.5 KiB
HTML
78 lines
2.5 KiB
HTML
<!DOCTYPE HTML>
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<title>Canvas test: 2d.line.width.transformed</title>
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<!-- Testing: Line stroke widths are affected by scale transformations -->
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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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ctx.fillStyle = '#0f0';
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ctx.fillRect(0, 0, 100, 50);
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ctx.lineWidth = 4;
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// Draw a green line over a red box, to check the line is not too small
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ctx.fillStyle = '#f00';
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ctx.strokeStyle = '#0f0';
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ctx.fillRect(15, 15, 20, 20);
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ctx.save();
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ctx.scale(5, 1);
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ctx.beginPath();
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ctx.moveTo(5, 15);
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ctx.lineTo(5, 35);
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ctx.stroke();
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ctx.restore();
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// Draw a green box over a red line, to check the line is not too large
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ctx.fillStyle = '#0f0';
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ctx.strokeStyle = '#f00';
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ctx.save();
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ctx.scale(-5, 1);
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ctx.beginPath();
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ctx.moveTo(-15, 15);
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ctx.lineTo(-15, 35);
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ctx.stroke();
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ctx.restore();
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ctx.fillRect(65, 15, 20, 20);
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isPixel(ctx, 14,25, 0,255,0,255, "14,25", "0,255,0,255", 0);
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isPixel(ctx, 15,25, 0,255,0,255, "15,25", "0,255,0,255", 0);
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isPixel(ctx, 16,25, 0,255,0,255, "16,25", "0,255,0,255", 0);
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isPixel(ctx, 25,25, 0,255,0,255, "25,25", "0,255,0,255", 0);
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isPixel(ctx, 34,25, 0,255,0,255, "34,25", "0,255,0,255", 0);
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isPixel(ctx, 35,25, 0,255,0,255, "35,25", "0,255,0,255", 0);
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isPixel(ctx, 36,25, 0,255,0,255, "36,25", "0,255,0,255", 0);
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isPixel(ctx, 64,25, 0,255,0,255, "64,25", "0,255,0,255", 0);
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isPixel(ctx, 65,25, 0,255,0,255, "65,25", "0,255,0,255", 0);
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isPixel(ctx, 66,25, 0,255,0,255, "66,25", "0,255,0,255", 0);
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isPixel(ctx, 75,25, 0,255,0,255, "75,25", "0,255,0,255", 0);
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isPixel(ctx, 84,25, 0,255,0,255, "84,25", "0,255,0,255", 0);
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isPixel(ctx, 85,25, 0,255,0,255, "85,25", "0,255,0,255", 0);
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isPixel(ctx, 86,25, 0,255,0,255, "86,25", "0,255,0,255", 0);
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SimpleTest.finish();
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});
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</script>
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