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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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6
Tests/LibWeb/Layout/expected/block-and-inline/float-4.txt
View file

@ -6,19 +6,19 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
TextNode <#text>
BlockContainer <div.left> at (9,9) content-size 50x50 floating [BFC] children: inline
line 0 width: 39.21875, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 5, rect: [14,9 39.21875x17.46875]
frag 0 from TextNode start: 0, length: 5, rect: [14.390625,9 39.21875x17.46875]
"Left1"
TextNode <#text>
TextNode <#text>
BlockContainer <div.right> at (737,9) content-size 50x50 floating [BFC] children: inline
line 0 width: 48.3125, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 6, rect: [738,9 48.3125x17.46875]
frag 0 from TextNode start: 0, length: 6, rect: [737.84375,9 48.3125x17.46875]
"Right1"
TextNode <#text>
TextNode <#text>
BlockContainer <div.left> at (61,9) content-size 50x50 floating [BFC] children: inline
line 0 width: 41.6875, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 5, rect: [65,9 41.6875x17.46875]
frag 0 from TextNode start: 0, length: 5, rect: [65.15625,9 41.6875x17.46875]
"Left2"
TextNode <#text>
TextNode <#text>