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layout: Parameterize content box query (#38935)

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Parameterize and rename both `Layout::content_box_query` and
`Layout::content_boxes_query` to support the query of rendered padding
area and content area that accounts for transform and scroll. Both of
these query have been misleading for a time since they are using border
box, instead of content box of a Node.

This PR adds a new type `layout_api::BoxAreaType` to be passed from
`ScriptThread` to `LayoutThread` to query the respective area. It is
then used for the query within `IntersectionObserver` to pass several
WPTs.

Testing: Existing WPT Coverage.

---------

Signed-off-by: Jo Steven Novaryo <jo.steven.novaryo@huawei.com>
This commit is contained in:
Jo Steven Novaryo 2025-08-27 10:27:53 +08:00 • committed by GitHub
parent 32aba08be7
commit 10ca3b6fde
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21 changed files with 125 additions and 125 deletions
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8
components/layout/fragment_tree/box_fragment.rs
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@ -302,6 +302,14 @@ impl BoxFragment {
rect.translate(self.cumulative_containing_block_rect.origin.to_vector())
}
pub(crate) fn cumulative_content_box_rect(&self) -> PhysicalRect<Au> {
self.offset_by_containing_block(&self.margin_rect())
}
pub(crate) fn cumulative_padding_box_rect(&self) -> PhysicalRect<Au> {
self.offset_by_containing_block(&self.padding_rect())
}
pub(crate) fn cumulative_border_box_rect(&self) -> PhysicalRect<Au> {
self.offset_by_containing_block(&self.border_rect())
}