mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-28 02:27:19 +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.
13 lines
479 B
Plaintext
13 lines
479 B
Plaintext
AccumulatedVisualContext Tree:
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[1] scroll_frame_id=1 (PaintableWithLines(BlockContainer<PRE>#out))
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[2] clip=[8,8 200x100] (PaintableWithLines(BlockContainer(anonymous)))
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DisplayList:
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SaveLayer@0
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FillRect@2 rect=[8,8 150x50] color=rgb(0, 128, 0)
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DrawGlyphRun@2 rect=[8,8 56x18] translation=[8,21.796875] color=rgb(0, 0, 0)
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FillRect@0 rect=[10,10 80x40] color=rgb(255, 0, 0)
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DrawGlyphRun@0 rect=[10,10 44x18] translation=[10,23.796875] color=rgb(0, 0, 0)
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Restore@0
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