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LibWeb: Fix mouse event offset computation with nested CSS transforms

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compute_mouse_event_offset() only inverted the target element's own CSS
transform, ignoring ancestor transforms. This caused incorrect offsetX/
offsetY values when elements were nested inside transformed parents.

Use AccumulatedVisualContext::inverse_transform_point() to invert the
full ancestor transform chain instead.
This commit is contained in:
Aliaksandr Kalenik
2026-01-31 15:34:23 +01:00
committed by Alexander Kalenik
parent 176e3b93b3
commit 24c08b7d42
Notes: github-actions[bot] 2026-02-06 10:51:28 +00:00 
Author: https://github.com/kalenikaliaksandr
Commit: https://github.com/LadybirdBrowser/ladybird/commit/24c08b7d429
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/7701
4 changed files with 43 additions and 14 deletions
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2
Tests/LibWeb/Text/expected/CSSOMView/mouse-event-offset-with-nested-css-transforms.txt
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@@ -1,2 +1,2 @@
offsetX: 55
offsetX: 5
offsetY: 5