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[Masonry] Don't update auto-placement cursor after dense-packing an item. #56875

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Merged
chromium-wpt-export-bot merged 1 commit into from
Dec 19, 2025
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[Masonry] Don't update auto-placement cursor after dense-packing an item. #56875

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34 changes: 34 additions & 0 deletions ...-grid/grid-lanes/tentative/item-placement/dense-packing/column-dense-packing-008-ref.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
<!DOCTYPE html>
<html>
<style>
.grid {
display: grid;
item-tolerance: 0;
grid-template-columns: repeat(4, 50px);
padding: 10px;
}
</style>
<body>
<p>Ensure that the auto-placement cursor does not move after dense-packing an item.</p>
<div class="grid">
<div style="background: lightskyblue; height: 40px; grid-column: 1;" >
1
</div>
<div style="background: lightcoral; height: 15px; grid-column: 1 / span 3; transform: translateY(-15px);" >
2
</div>
<div style="background: lightgreen; height: 15px; grid-column: 1 / span 2; transform: translateY(-15px);">
3
</div>
<div style="background: yellow; height: 55px; grid-row: 1; grid-column: 4;">
4
</div>
<div style="background:orchid; height: 10px; grid-row: 1; grid-column: 3;">
5
</div>
<div style="background:orchid; height: 60px; transform: translateY(-15px);">
6
</div>
</div>
</body>
</html>
39 changes: 39 additions & 0 deletions css/css-grid/grid-lanes/tentative/item-placement/dense-packing/column-dense-packing-008.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,39 @@
<!DOCTYPE html>
<html>
<link rel="help" href="https://drafts.csswg.org/css-grid-3">
<link rel="match" href="column-dense-packing-008-ref.html">
<link rel="author" title="Celeste Pan" href="mailto:celestepan@microsoft.com">
<style>
.grid-lanes {
display: grid-lanes;
item-tolerance: 0;
grid-template-columns: repeat(4, 50px);
padding: 10px;
grid-auto-flow: dense;
}
</style>
<body>
<p>Ensure that the auto-placement cursor does not move after dense-packing an item.</p>
<div class="grid-lanes">
<div style="background: lightskyblue; height: 40px; grid-column: 1;" >
1
</div>
<div style="background: lightcoral; height: 15px; grid-column: 1 / span 3;" >
2
</div>
<div style="background: lightgreen; height: 15px; grid-column: 1 / span 2;">
3
</div>
<div style="background: yellow; height: 55px; grid-column: 4;">
4
</div>
<div style="background:orchid; height: 10px; grid-column: 3;">
5
</div>
<!--Auto-placement cursor should be at the last line after placing item 4, and wrap around when we place item 6.-->
<div style="background:orchid; height: 60px;">
6
</div>
</div>
</body>
</html>