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LibWeb: Clamp scroll offset into valid range after relayout

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If the layout has been recalculated and the sizes of scrollable
overflow rectangles could have changed, we need to ensure that scroll
offsets remain within the valid range.
This commit is contained in:
Aliaksandr Kalenik 2024-02-22 02:09:16 +01:00 • committed by Andreas Kling
parent 155070cfd8
commit 309259aeb6
3 changed files with 45 additions and 0 deletions
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36
Tests/LibWeb/Text/input/resize-scrollable-box.html Normal file
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<style>
.scrollable-div {
width: 100%;
overflow-x: auto;
white-space: nowrap;
border: 10px magenta solid;
}
span {
width: 100px;
height: 100px;
display: inline-block;
border: 10px solid #000;
}
body {
width: 300px;
}
</style>
<body>
<div class="scrollable-div">
<span>Item 1</span><span>Item 2</span><span>Item 3</span><span>Item 4</span
><span>Item 5</span><span>Item 6</span><span>Item 7</span><span>Item 8</span
><span>Item 9</span><span>Item 10</span><span>Item 11</span><span>Item 12</span>
</div>
</body>
<script src="./include.js"></script>
<script>
test(() => {
const scrollableDiv = document.querySelector('.scrollable-div');
scrollableDiv.scrollLeft = scrollableDiv.scrollWidth;
println("scrollLeft (before resize): " + scrollableDiv.scrollLeft);
document.body.style.width = '600px';
println("scrollLeft (after resize): " + scrollableDiv.scrollLeft);
});
</script>