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LibWeb: Obey CSS aspect-ratio property during layout

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Calculate a "preferred aspect ratio" based on the value of
`aspect-ratio` and the presence of a natural aspect ratio, and use that
in layout.

This is by no means complete or perfect, but we do now apply the given
aspect-ratio to things.

The spec is a bit vague, just saying to calculate sizes for
aspect-ratio'ed boxes the same as you would for replaced elements. My
naive solution here is to find everywhere we were checking for a
ReplacedBox, and then also accept a regular Box with a preferred aspect
ratio. This gets us pretty far. :^)

https://www.w3.org/TR/css-sizing-4/#aspect-ratio-minimum is not at all
implemented.
This commit is contained in:
Sam Atkins 2023-06-08 16:47:50 +01:00 • committed by Andreas Kling
parent 84e7216603
commit 1051624084
14 changed files with 131 additions and 55 deletions
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2
Userland/Libraries/LibWeb/Layout/BlockFormattingContext.h
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@ -57,7 +57,7 @@ private:
void compute_width_for_floating_box(Box const&, AvailableSpace const&);
void compute_width_for_block_level_replaced_element_in_normal_flow(ReplacedBox const&, AvailableSpace const&);
void compute_width_for_block_level_replaced_element_in_normal_flow(Box const&, AvailableSpace const&);
CSSPixels compute_table_box_width_inside_table_wrapper(Box const&, AvailableSpace const&);