content/canvas/test/test_drawImage_edge_cases.html

Thu, 15 Jan 2015 21:03:48 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 15 Jan 2015 21:03:48 +0100
branch
TOR_BUG_9701
changeset 11
deefc01c0e14
permissions
-rw-r--r--

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

michael@0 1 <!DOCTYPE HTML>
michael@0 2 <html>
michael@0 3 <head>
michael@0 4 <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
michael@0 5 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
michael@0 6 </head>
michael@0 7 <body onload="doTest()">
michael@0 8 <p id="display">
michael@0 9 <canvas id="c" width="1" height="1"></canvas>
michael@0 10 <img id="img" src="image_red.png">
michael@0 11 </p>
michael@0 12 <div id="content" style="display: none">
michael@0 13
michael@0 14 </div>
michael@0 15 <pre id="test">
michael@0 16 <script type="application/javascript">
michael@0 17
michael@0 18 var c = document.getElementById("c");
michael@0 19 var ctx = c.getContext("2d");
michael@0 20 var img = document.getElementById("img");
michael@0 21
michael@0 22 SimpleTest.waitForExplicitFinish();
michael@0 23
michael@0 24 function doTest() {
michael@0 25 ctx.drawImage(img, 0, 0);
michael@0 26 img.src = "image_green-1x1.png";
michael@0 27 img.onload = function() {
michael@0 28 ctx.drawImage(img, 0, 0);
michael@0 29 var data = ctx.getImageData(0, 0, 1, 1).data;
michael@0 30 is(data[0], 0, "Red channel should be 0");
michael@0 31 is(data[1], 255, "Green channel should be 1.0");
michael@0 32 is(data[2], 0, "Blue channel should be 0")
michael@0 33 is(data[3], 255, "Alpha channel should be opaque");
michael@0 34
michael@0 35 SimpleTest.finish();
michael@0 36 }
michael@0 37 }
michael@0 38
michael@0 39 </script>
michael@0 40 </pre>
michael@0 41 </body>
michael@0 42 </html>

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