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.
26 lines
1.5 KiB
Plaintext
26 lines
1.5 KiB
Plaintext
AccumulatedVisualContext Tree:
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[1] scroll_frame_id=1 (PaintableWithLines(BlockContainer<PRE>#out))
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[2] clip=[10,10 400x200] (PaintableWithLines(BlockContainer<DIV>.branch))
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[3] clip=[11,11 193x198] (PaintableWithLines(BlockContainer(anonymous)))
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[4] transform=[0.9961947,-0.08715574,0.08715574,0.9961947,0,0] origin=(91,56) (PaintableWithLines(BlockContainer<DIV>.leaf.leaf-a))
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[5] transform=[0.9,0,0,0.9,0,0] origin=(91,141) (PaintableWithLines(BlockContainer<DIV>.leaf.leaf-b))
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[6] clip=[216,11 193x198] (PaintableWithLines(BlockContainer(anonymous)))
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[7] transform=[1,0,0,1,10,0] origin=(296,56) (PaintableWithLines(BlockContainer<DIV>.leaf.leaf-c))
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[8] transform=[1,0,0,1,0,10] origin=(296,141) (PaintableWithLines(BlockContainer<DIV>.leaf.leaf-d))
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DisplayList:
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SaveLayer@0
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FillPath@1 path_bounding_rect=[8,8 404x204]
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FillPath@2 path_bounding_rect=[10,10 195x200]
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FillPath@2 path_bounding_rect=[215,10 195x200]
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FillRect@4 rect=[16,16 150x80] color=rgb(255, 0, 0)
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DrawGlyphRun@4 rect=[16,16 15x18] translation=[16,29.796875] color=rgb(0, 0, 0)
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FillRect@5 rect=[16,101 150x80] color=rgb(0, 128, 0)
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DrawGlyphRun@5 rect=[16,101 10x18] translation=[16,114.796875] color=rgb(0, 0, 0)
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FillRect@7 rect=[221,16 150x80] color=rgb(0, 0, 255)
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DrawGlyphRun@7 rect=[221,16 11x18] translation=[221,29.796875] color=rgb(0, 0, 0)
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FillRect@8 rect=[221,101 150x80] color=rgb(255, 165, 0)
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DrawGlyphRun@8 rect=[221,101 12x18] translation=[221,114.796875] color=rgb(0, 0, 0)
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Restore@0
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