The Tor Browser: dom/tests/mochitest/bugs/test

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 <!DOCTYPE HTML>

     2 <html>

     3 <!--

     4 https://bugzilla.mozilla.org/show_bug.cgi?id=389366

     5 -->

     6 <head>

     7   <title>Test for Bug 389366</title>

     8   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

     9   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

    10 </head>

    11 <body>

    12 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=389366">Mozilla Bug 389366</a>

    13 <p id="display"></p>

    14 <div id="content" style="display: none">

    15   <h4>Canvas testcase</h4>

    17   Canvas, with pixel set to #ff0000 at 50% opacity:<br>

    18   <canvas id="canvas1" width="10" height="10"></canvas>

    19   <br>

    20   <canvas id="canvas2" width="10" height="10"></canvas>

    22 </div>

    23 <pre id="test">

    24 <script class="testbody" type="text/javascript">

    26 SimpleTest.waitForExplicitFinish();

    28 function test()

    29 {

    30   // Draw to canvas1

    31   var canvas1 = document.getElementById("canvas1");

    32   var ctx1 = canvas1.getContext("2d");

    34   ctx1.globalAlpha = 0.502;

    35   ctx1.fillStyle = "#FF0000";

    36   ctx1.fillRect(0, 0, 10, 10);

    38   var data1 = ctx1.getImageData(0,0,1,1).data;

    39   isDeeply(data1, [255, 0, 0, 128], "expected half-transparent red canvas 1");

    41   // half-transparent red 10x10 square

    42   var imgData = ctx1.createImageData(10, 10);

    43   var rgba = [ 255, 0, 0, 128 ];

    44   for (i = 0; i < 50; ++i) {

    45     for (j = 0; j < 4; ++j) {

    46       imgData.data[(i * 4) + j] = rgba[j];

    47     }

    48   }

    50   var canvas2 = document.getElementById("canvas2");

    51   var ctx2 = canvas2.getContext("2d");

    52   ctx2.putImageData(imgData, 0, 0);

    54   var data2 = ctx2.getImageData(0,0,1,1).data;

    55   isDeeply(data2, [255, 0, 0, 128], "expected half-transparent red canvas 2");

    57   SimpleTest.finish();

    58 }

    60 addLoadEvent(test);

    62 </script>

    63 </pre>

    64 </body>

    65 </html>

The Tor Browser / file revision