mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-01 20:17:13 +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.
21 lines
890 B
Plaintext
21 lines
890 B
Plaintext
AccumulatedVisualContext Tree:
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[1] scroll_frame_id=1 (PaintableWithLines(BlockContainer<PRE>#out))
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[2] clip=[9,9 200x20] (PaintableWithLines(BlockContainer<DIV>))
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[3] clip=[11,10 196x18]
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[4] clip=[219,9 200x20] (PaintableWithLines(BlockContainer<DIV>))
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[5] clip=[221,10 196x18]
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DisplayList:
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SaveLayer@0
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FillRect@1 rect=[8,8 202x22] color=rgb(255, 255, 255)
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FillPath@1 path_bounding_rect=[8,8 202x22]
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FillRect@1 rect=[218,8 202x22] color=rgb(255, 255, 255)
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FillPath@1 path_bounding_rect=[218,8 202x22]
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DrawGlyphRun@1 rect=[210,14 8x18] translation=[210,27.796875] color=rgb(0, 0, 0)
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DrawGlyphRun@3 rect=[11,10 28x18] translation=[11,23.796875] color=rgb(0, 0, 0)
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DrawGlyphRun@5 rect=[221,10 28x18] translation=[221,23.796875] color=rgb(0, 0, 0)
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FillRect@5 rect=[221,10 1x18] color=rgb(0, 0, 0)
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FillPath@1 path_bounding_rect=[216,6 206x26]
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Restore@0
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