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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
| commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
| tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /dom/tests/mochitest/bugs/test_bug389366.html | |
| parent | Initial commit. (diff) | |
| download | firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.tar.xz firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.zip | |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/tests/mochitest/bugs/test_bug389366.html')
| -rw-r--r-- | dom/tests/mochitest/bugs/test_bug389366.html | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/dom/tests/mochitest/bugs/test_bug389366.html b/dom/tests/mochitest/bugs/test_bug389366.html new file mode 100644 index 0000000000..82d493c5ea --- /dev/null +++ b/dom/tests/mochitest/bugs/test_bug389366.html @@ -0,0 +1,65 @@ +<!DOCTYPE HTML> +<html> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=389366 +--> +<head> + <title>Test for Bug 389366</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> +</head> +<body> +<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=389366">Mozilla Bug 389366</a> +<p id="display"></p> +<div id="content" style="display: none"> + <h4>Canvas testcase</h4> + + Canvas, with pixel set to #ff0000 at 50% opacity:<br> + <canvas id="canvas1" width="10" height="10"></canvas> + <br> + <canvas id="canvas2" width="10" height="10"></canvas> + +</div> +<pre id="test"> +<script class="testbody" type="text/javascript"> + +SimpleTest.waitForExplicitFinish(); + +function test() +{ + // Draw to canvas1 + var canvas1 = document.getElementById("canvas1"); + var ctx1 = canvas1.getContext("2d"); + + ctx1.globalAlpha = 0.502; + ctx1.fillStyle = "#FF0000"; + ctx1.fillRect(0, 0, 10, 10); + + var data1 = ctx1.getImageData(0,0,1,1).data; + isDeeply(data1, [255, 0, 0, 128], "expected half-transparent red canvas 1"); + + // half-transparent red 10x10 square + var imgData = ctx1.createImageData(10, 10); + var rgba = [ 255, 0, 0, 128 ]; + for (i = 0; i < 50; ++i) { + for (j = 0; j < 4; ++j) { + imgData.data[(i * 4) + j] = rgba[j]; + } + } + + var canvas2 = document.getElementById("canvas2"); + var ctx2 = canvas2.getContext("2d"); + ctx2.putImageData(imgData, 0, 0); + + var data2 = ctx2.getImageData(0,0,1,1).data; + isDeeply(data2, [255, 0, 0, 128], "expected half-transparent red canvas 2"); + + SimpleTest.finish(); +} + +addLoadEvent(test); + +</script> +</pre> +</body> +</html> |