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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
| commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
| tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /layout/base/tests/test_transformed_scrolling_repaints.html | |
| parent | Initial commit. (diff) | |
| download | thunderbird-upstream.tar.xz thunderbird-upstream.zip | |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/base/tests/test_transformed_scrolling_repaints.html')
| -rw-r--r-- | layout/base/tests/test_transformed_scrolling_repaints.html | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/layout/base/tests/test_transformed_scrolling_repaints.html b/layout/base/tests/test_transformed_scrolling_repaints.html new file mode 100644 index 0000000000..81cf9d7ac2 --- /dev/null +++ b/layout/base/tests/test_transformed_scrolling_repaints.html @@ -0,0 +1,54 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test that scaled elements with scrolled contents don't repaint unnecessarily when we scroll inside them</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <script src="/tests/SimpleTest/paint_listener.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> +</head> +<body onload="setPrefAndStartTest()"> +<div id="t" style="-moz-transform: scale(1.2, 1.2); -moz-transform-origin:top left; width:200px; height:500px; background:yellow; overflow:auto"> + <div style="height:40px;">Hello</div> + <div id="e" style="height:30px; background:lime">Kitty</div> + <div style="height:800px; background:yellow">Kitty</div> +</div> +<pre id="test"> +<script type="application/javascript"> +SimpleTest.waitForExplicitFinish(); + +var t = document.getElementById("t"); +var e = document.getElementById("e"); +var utils = SpecialPowers.getDOMWindowUtils(window); + +function startTest() { + // Do a couple of scrolls to ensure we've triggered activity heuristics. + waitForAllPaintsFlushed(function () { + t.scrollTop = 5; + waitForAllPaintsFlushed(function () { + t.scrollTop = 10; + waitForAllPaintsFlushed(function () { + // Clear paint state now and scroll again. + utils.checkAndClearPaintedState(e); + t.scrollTop = 15; + waitForAllPaintsFlushed(function () { + var painted = utils.checkAndClearPaintedState(e); + is(painted, false, "Fully-visible scrolled element should not have been painted"); + SimpleTest.finish(); + }); + }); + }); + }); +} +function setPrefAndStartTest() { + SpecialPowers.pushPrefEnv( + {"set": [["layers.single-tile.enabled", false]]}, + // Need a timeout here to allow paint unsuppression before we start the test + function() { + setTimeout(startTest, 0); + } + ); +} +</script> +</pre> +</body> +</html> |