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LibWeb: Make CSSPixels and Length use 64-bit (double) floating point

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This fixes a plethora of rounding problems on many websites.
In the future, we may want to replace this with fixed-point arithmetic
(bug #18566) for performance (and consistency with other engines),
but in the meantime this makes the web look a bit better. :^)

There's a lot more things that could be converted to doubles, which
would reduce the amount of casting necessary in this patch.
We can do that incrementally, however.
This commit is contained in:
Andreas Kling 2023-05-24 10:50:57 +02:00
parent 30262d7023
commit 655d9d1462
80 changed files with 298 additions and 299 deletions
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4
Tests/LibWeb/Layout/expected/vertical-padding-relative-to-cb-width.txt
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@ -6,9 +6,9 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <div.cb> at (11,11) content-size 600x10 children: not-inline
BlockContainer <(anonymous)> at (11,11) content-size 600x0 children: inline
TextNode <#text>
BlockContainer <div.foo> at (12,72) content-size 598x18.000007 children: inline
BlockContainer <div.foo> at (12,71.999996) content-size 598x18.000010 children: inline
line 0 width: 27.15625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 3, rect: [12,72 27.15625x17.46875]
frag 0 from TextNode start: 0, length: 3, rect: [12,71.999996 27.15625x17.46875]
"foo"
TextNode <#text>
BlockContainer <(anonymous)> at (11,211) content-size 600x17.46875 children: inline