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LibWeb: Apply scroll offset to PushStackingContext command

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In cases where the stacking context painting requires a separate
bitmap, the destination position needs to be translated by the
scrolling offset to ensure it ends up in the correct position.
This commit is contained in:
Aliaksandr Kalenik 2024-02-01 12:31:31 +01:00 • committed by Andreas Kling
parent 384c6cf0f9
commit 5484062095
5 changed files with 150 additions and 1 deletions
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91
Tests/LibWeb/Ref/scrollable-contains-boxes-with-hidden-overflow-and-opacity.html Normal file
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<!DOCTYPE html>
<link rel="match" href="reference/scrollable-contains-boxes-with-hidden-overflow-and-opacity-ref.html" />
<style>
html {
background: white;
}
body {
position: absolute;
inset: 0px;
display: flex;
background: pink;
}
#outer {
overflow-x: hidden;
overflow-y: scroll;
background: orange;
margin-top: 100px;
}
#inner {
height: 1000px;
background: magenta;
}
.item {
background: yellow;
}
.wrapper {
box-sizing: border-box;
border: 1px solid black;
background: lime;
height: 50px;
width: 200px;
display: flex;
justify-content: center;
align-items: center;
opacity: 0.5;
}
</style><body><div id="outer"><div id="inner">
<div class="item"><div class="wrapper">1</div></div>
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<script>
const scrollContainer = document.getElementById("outer");
scrollContainer.scrollTop = 500;
</script>