layout: Implement proper absolute child position for flexbox (#33346)

This implements the requirements outlined in the [flexbox specification]
about how to position absolute children of flex containers. We must
establish a static position rectangle (to use if all insets are auto)
and also align the child into that rectangle.

[flebox specification]: https://drafts.csswg.org/css-flexbox/#abspos-items

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
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Martin Robinson 2024-09-09 07:44:16 -07:00 committed by GitHub
parent a3a86d5913
commit d169a82d2e
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20 changed files with 678 additions and 724 deletions

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@ -18,6 +18,7 @@ use crate::ContainingBlock;
pub type PhysicalPoint<U> = euclid::Point2D<U, CSSPixel>;
pub type PhysicalSize<U> = euclid::Size2D<U, CSSPixel>;
pub type PhysicalVec<U> = euclid::Vector2D<U, CSSPixel>;
pub type PhysicalRect<U> = euclid::Rect<U, CSSPixel>;
pub type PhysicalSides<U> = euclid::SideOffsets2D<U, CSSPixel>;
pub type AuOrAuto = AutoOr<Au>;