The Tor Browser: content/canvas/test/test_2d.line.join.parallel.html@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 <!DOCTYPE HTML>

     2 <title>Canvas test: 2d.line.join.parallel</title>

     3 <!-- Testing: Line joins are drawn at 180-degree joins -->

     4 <script src="/tests/SimpleTest/SimpleTest.js"></script>

     5 <link rel="stylesheet" href="/tests/SimpleTest/test.css">

     6 <body>

     7 <canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>

     8 <script>

     9 function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {

    10     var pixel = ctx.getImageData(x, y, 1, 1);

    11     var pr = pixel.data[0],

    12         pg = pixel.data[1],

    13         pb = pixel.data[2],

    14         pa = pixel.data[3];

    15     ok(r-d <= pr && pr <= r+d &&

    16        g-d <= pg && pg <= g+d &&

    17        b-d <= pb && pb <= b+d &&

    18        a-d <= pa && pa <= a+d,

    19        "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);

    20 }

    22 SimpleTest.waitForExplicitFinish();

    23 addLoadEvent(function () {

    25 var canvas = document.getElementById('c');

    26 var ctx = canvas.getContext('2d');

    28 ctx.fillStyle = '#f00';

    29 ctx.fillRect(0, 0, 100, 50);

    31 ctx.strokeStyle = '#0f0';

    32 ctx.lineWidth = 300;

    33 ctx.lineJoin = 'round';

    34 ctx.beginPath();

    35 ctx.moveTo(-100, 25);

    36 ctx.lineTo(0, 25);

    37 ctx.lineTo(-100, 25);

    38 ctx.stroke();

    40 isPixel(ctx, 1,1, 0,255,0,255, "1,1", "0,255,0,255", 0);

    41 isPixel(ctx, 48,1, 0,255,0,255, "48,1", "0,255,0,255", 0);

    42 isPixel(ctx, 48,48, 0,255,0,255, "48,48", "0,255,0,255", 0);

    43 isPixel(ctx, 1,48, 0,255,0,255, "1,48", "0,255,0,255", 0);

    45 SimpleTest.finish();

    47 });

    48 </script>

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