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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/replaced-box-with-vertical-margins.txt
View file

@ -1,12 +1,12 @@
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 784x216.46875 children: inline
line 0 width: 174.828125, height: 216.46875, bottom: 216.46875, baseline: 213
frag 0 from TextNode start: 0, length: 6, rect: [8,207 43.125x17.46875]
BlockContainer <body> at (8,8) content-size 784x216.9375 children: inline
line 0 width: 174.828125, height: 216.9375, bottom: 216.9375, baseline: 213
frag 0 from TextNode start: 0, length: 6, rect: [8,207.46875 43.125x17.46875]
"Well, "
frag 1 from ImageBox start: 0, length: 0, rect: [51,33 64x138]
frag 2 from TextNode start: 0, length: 9, rect: [115,207 67.703125x17.46875]
frag 1 from ImageBox start: 0, length: 0, rect: [51.125,33 64x138]
frag 2 from TextNode start: 0, length: 9, rect: [115.125,207.46875 67.703125x17.46875]
" friends."
TextNode <#text>
ImageBox <img#image> at (51,33) content-size 64x138 children: not-inline
ImageBox <img#image> at (51.125,33) content-size 64x138 children: not-inline
TextNode <#text>