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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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10
Tests/LibWeb/Layout/expected/grid/auto-fit.txt
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@ -4,23 +4,23 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
Box <div.grid-container> at (8,8) content-size 784x17.46875 [GFC] children: not-inline
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
BlockContainer <div.grid-item> at (8,8) content-size 261.333333x17.46875 [BFC] children: inline
BlockContainer <div.grid-item> at (8,8) content-size 261.328125x17.46875 [BFC] children: inline
line 0 width: 6.34375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 1, rect: [8,8 6.34375x17.46875]
"1"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
BlockContainer <div.grid-item> at (269.333333,8) content-size 261.333333x17.46875 [BFC] children: inline
BlockContainer <div.grid-item> at (269.328125,8) content-size 261.328125x17.46875 [BFC] children: inline
line 0 width: 8.8125, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 1, rect: [269.333333,8 8.8125x17.46875]
frag 0 from TextNode start: 0, length: 1, rect: [269.328125,8 8.8125x17.46875]
"2"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
BlockContainer <div.grid-item> at (530.666666,8) content-size 261.333333x17.46875 [BFC] children: inline
BlockContainer <div.grid-item> at (530.65625,8) content-size 261.328125x17.46875 [BFC] children: inline
line 0 width: 9.09375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 1, rect: [530.666666,8 9.09375x17.46875]
frag 0 from TextNode start: 0, length: 1, rect: [530.65625,8 9.09375x17.46875]
"3"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) [BFC] children: inline