The Tor Browser: content/canvas/test/test_2d.composite.canvas.xor.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.composite.canvas.xor</title>

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

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

     5 <body>

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

     7 <script>

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

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

    10     var pr = pixel.data[0],

    11         pg = pixel.data[1],

    12         pb = pixel.data[2],

    13         pa = pixel.data[3];

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

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

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

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

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

    19 }

    21 SimpleTest.waitForExplicitFinish();

    22 addLoadEvent(function () {

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

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

    28 var canvas2 = document.createElement('canvas');

    29 canvas2.width = canvas.width;

    30 canvas2.height = canvas.height;

    31 var ctx2 = canvas2.getContext('2d');

    32 ctx2.drawImage(document.getElementById('yellow75.png'), 0, 0);

    33 ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';

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

    35 ctx.globalCompositeOperation = 'xor';

    36 ctx.drawImage(canvas2, 0, 0);

    37 isPixel(ctx, 50,25, 191,255,63,127, "50,25", "191,255,63,127", 5);

    39 SimpleTest.finish();

    41 });

    42 </script>

    43 <img src="image_yellow75.png" id="yellow75.png" class="resource">

The Tor Browser / file revision