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LibWeb: Use fixed-point saturated arithmetics for CSSPixels

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Using fixed-point saturated arithmetics for CSSPixels allows to avoid
accumulating floating-point errors.

This implementation is not complete yet: currently saturated
arithmetics implemented only for addition. But it is enough to not
regress any of layout tests we have :)

See https://github.com/SerenityOS/serenity/issues/18566
This commit is contained in:
Aliaksandr Kalenik 2023-07-23 01:09:39 +02:00 • committed by Andreas Kling
parent 5cdd03fc53
commit bec07d4af7
136 changed files with 1938 additions and 1844 deletions
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12
Tests/LibWeb/Layout/expected/grid/image-in-grid.txt
View file

@ -1,14 +1,14 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x23.999999 children: not-inline
Box <div.grid-container> at (8,8) content-size 784x23.999999 [GFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x24 children: not-inline
Box <div.grid-container> at (8,8) content-size 784x24 [GFC] children: not-inline
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
BlockContainer <div.wrapper> at (8,8) content-size 64x23.999999 [BFC] children: inline
line 0 width: 64, height: 23.999999, bottom: 23.999999, baseline: 23.999999
frag 0 from ImageBox start: 0, length: 0, rect: [8,8 64x23.999999]
BlockContainer <div.wrapper> at (8,8) content-size 64.015625x24 [BFC] children: inline
line 0 width: 64.015625, height: 24, bottom: 24, baseline: 24
frag 0 from ImageBox start: 0, length: 0, rect: [8,8 64.015625x24]
TextNode <#text>
ImageBox <img> at (8,8) content-size 64x23.999999 children: not-inline
ImageBox <img> at (8,8) content-size 64.015625x24 children: not-inline
TextNode <#text>
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>