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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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30
Tests/LibWeb/Layout/expected/grid/grid-item-fixed-paddings.txt
View file

@ -1,36 +1,36 @@
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 784x355.507812 children: not-inline
Box <div.grid-container> at (8,8) content-size 784x355.507812 [GFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x355.5 children: not-inline
Box <div.grid-container> at (8,8) content-size 784x355.5 [GFC] children: not-inline
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
BlockContainer <div.grid-item> at (68,68) content-size 17.050781x32.753906 [BFC] children: inline
line 0 width: 11.894531, height: 32.753906, bottom: 32.753906, baseline: 25.371093
frag 0 from TextNode start: 0, length: 1, rect: [71,68 11.894531x32.753906]
BlockContainer <div.grid-item> at (68,68) content-size 17.046875x32.75 [BFC] children: inline
line 0 width: 11.890625, height: 32.75, bottom: 32.75, baseline: 25.359375
frag 0 from TextNode start: 0, length: 1, rect: [70.578125,68 11.890625x32.75]
"1"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
BlockContainer <div.grid-item> at (255.050781,68) content-size 16.523437x32.753906 [BFC] children: inline
line 0 width: 16.523437, height: 32.753906, bottom: 32.753906, baseline: 25.371093
frag 0 from TextNode start: 0, length: 1, rect: [255.050781,68 16.523437x32.753906]
BlockContainer <div.grid-item> at (255.046875,68) content-size 16.515625x32.75 [BFC] children: inline
line 0 width: 16.515625, height: 32.75, bottom: 32.75, baseline: 25.359375
frag 0 from TextNode start: 0, length: 1, rect: [255.046875,68 16.515625x32.75]
"2"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
BlockContainer <div.grid-item> at (68,270.753906) content-size 17.050781x32.753906 [BFC] children: inline
line 0 width: 17.050781, height: 32.753906, bottom: 32.753906, baseline: 25.371093
frag 0 from TextNode start: 0, length: 1, rect: [68,270.753906 17.050781x32.753906]
BlockContainer <div.grid-item> at (68,270.75) content-size 17.046875x32.75 [BFC] children: inline
line 0 width: 17.046875, height: 32.75, bottom: 32.75, baseline: 25.359375
frag 0 from TextNode start: 0, length: 1, rect: [68,270.75 17.046875x32.75]
"3"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
BlockContainer <div.grid-item> at (255.050781,270.753906) content-size 16.523437x32.753906 [BFC] children: inline
line 0 width: 14.53125, height: 32.753906, bottom: 32.753906, baseline: 25.371093
frag 0 from TextNode start: 0, length: 1, rect: [256.050781,270.753906 14.53125x32.753906]
BlockContainer <div.grid-item> at (255.046875,270.75) content-size 16.515625x32.75 [BFC] children: inline
line 0 width: 14.53125, height: 32.75, bottom: 32.75, baseline: 25.359375
frag 0 from TextNode start: 0, length: 1, rect: [256.03125,270.75 14.53125x32.75]
"4"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
BlockContainer <(anonymous)> at (8,363.507812) content-size 784x0 children: inline
BlockContainer <(anonymous)> at (8,363.5) content-size 784x0 children: inline
TextNode <#text>