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script: Remove absolute positioning workaround from scrollIntoView implementation (#39441)

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This isn't needed as the border box query already takes into account the
containing block chain. Instead, consistently calculate the new
scroll position for a scroller relative to its current scroll offset.

In addition, fix a small bug where the border of a scroll container was
considered part of scrollport.

Testing: A new WPT test is added.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This commit is contained in:
Martin Robinson 2025-09-23 12:10:00 +02:00 • committed by GitHub
parent 16d2e030eb
commit c63311af02
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5 changed files with 104 additions and 119 deletions
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5
components/script/dom/node.rs
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@ -956,6 +956,11 @@ impl Node {
.box_area_query(self, BoxAreaType::Border)
}
pub(crate) fn padding_box(&self) -> Option<Rect<Au>> {
self.owner_window()
.box_area_query(self, BoxAreaType::Padding)
}
pub(crate) fn border_boxes(&self) -> Vec<Rect<Au>> {
self.owner_window()
.box_areas_query(self, BoxAreaType::Border)