mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-03 04:52:06 +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.
17 lines
870 B
Plaintext
17 lines
870 B
Plaintext
AccumulatedVisualContext Tree:
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[1] scroll_frame_id=1 (PaintableWithLines(BlockContainer<PRE>#out))
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[2] transform=[0.9659258,-0.25881904,0.25881904,0.9659258,0,0] origin=(38,38) (PaintableWithLines(BlockContainer<DIV>.box.a))
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[3] transform=[1.1,0,0,1.1,0,0] origin=(103,38) (PaintableWithLines(BlockContainer<DIV>.box.b))
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[4] transform=[1,0.17632698,0,1,0,0] origin=(168,38) (PaintableWithLines(BlockContainer<DIV>.box.c))
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DisplayList:
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SaveLayer@0
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FillRect@2 rect=[8,8 60x60] color=rgb(255, 0, 0)
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DrawGlyphRun@2 rect=[8,8 7x18] translation=[8,21.796875] color=rgb(0, 0, 0)
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FillRect@3 rect=[73,8 60x60] color=rgb(0, 128, 0)
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DrawGlyphRun@3 rect=[73,8 9x18] translation=[73,21.796875] color=rgb(0, 0, 0)
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FillRect@4 rect=[138,8 60x60] color=rgb(0, 0, 255)
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DrawGlyphRun@4 rect=[138,8 10x18] translation=[138,21.796875] color=rgb(0, 0, 0)
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Restore@0
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