mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-28 10:37:17 +02:00
3012c0fe72
Replace per-frame heap-allocated RefCounted ScrollFrame objects with a single contiguous Vector<ScrollFrame> inside ScrollState. All frames for a viewport are now stored in one allocation, using type-safe ScrollFrameIndex instead of RefPtr pointers. This reduces allocation churn, improves cache locality, and moves parent-chain traversal (cumulative offset, nearest scrolling ancestor) into ScrollState — similar to how visual context nodes were recently consolidated into AccumulatedVisualContextTree.
19 lines
688 B
Plaintext
19 lines
688 B
Plaintext
AccumulatedVisualContext Tree:
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[1] scroll_frame_id=1 (PaintableWithLines(BlockContainer<PRE>#out))
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[2] clip=[10,10 200x150]
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[3] scroll_frame_id=2 (PaintableWithLines(BlockContainer(anonymous)))
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[4] clip=[11,11 300x100]
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[5] scroll_frame_id=3 (PaintableWithLines(BlockContainer(anonymous)))
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DisplayList:
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SaveLayer@0
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FillPath@1 path_bounding_rect=[8,8 204x154]
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FillRect@3 rect=[10,10 302x102] color=rgb(255, 255, 224)
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FillPath@3 path_bounding_rect=[10,10 302x102]
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FillRect@5 rect=[11,11 400x80] color=rgb(240, 128, 128)
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DrawGlyphRun@5 rect=[11,11 178x18] translation=[11,24.796875] color=rgb(0, 0, 0)
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PaintScrollBar@3
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PaintScrollBar@1
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Restore@0
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