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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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26
Tests/LibWeb/Layout/expected/table/basic.txt
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@ -12,20 +12,20 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
TextNode <#text>
BlockContainer <caption> at (8,10) content-size 82.734375x17.46875 [BFC] children: inline
line 0 width: 82.734375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 1, length: 9, rect: [16,10 82.734375x17.46875]
frag 0 from TextNode start: 1, length: 9, rect: [16.21875,10 82.734375x17.46875]
"A Caption"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
Box <thead> at (8,10) content-size 95.171875x19.46875 table-header-group children: not-inline
Box <thead> at (8,10) content-size 95.171875x19.15625 table-header-group children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
Box <tr> at (10,29.46875) content-size 95.171875x19.46875 table-row children: not-inline
Box <tr> at (10,29.46875) content-size 95.171875x19.15625 table-row children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <td> at (11,30.46875) content-size 93.171875x17.46875 table-cell [BFC] children: inline
BlockContainer <td> at (11,30.3125) content-size 93.171875x17.46875 table-cell [BFC] children: inline
line 0 width: 73.65625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 9, rect: [11,30.46875 73.65625x17.46875]
frag 0 from TextNode start: 0, length: 9, rect: [11,30.3125 73.65625x17.46875]
"Head Cell"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
@ -34,15 +34,15 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
Box <tbody> at (8,29.46875) content-size 95.171875x19.46875 table-row-group children: not-inline
Box <tbody> at (8,29.15625) content-size 95.171875x19.15625 table-row-group children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
Box <tr> at (10,50.9375) content-size 95.171875x19.46875 table-row children: not-inline
Box <tr> at (10,50.625) content-size 95.171875x19.15625 table-row children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <td> at (11,51.9375) content-size 93.171875x17.46875 table-cell [BFC] children: inline
BlockContainer <td> at (11,51.46875) content-size 93.171875x17.46875 table-cell [BFC] children: inline
line 0 width: 70.234375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 9, rect: [11,51.9375 70.234375x17.46875]
frag 0 from TextNode start: 0, length: 9, rect: [11,51.46875 70.234375x17.46875]
"Body Cell"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
@ -51,15 +51,15 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
Box <tfoot> at (8,48.9375) content-size 95.171875x19.46875 table-footer-group children: not-inline
Box <tfoot> at (8,48.3125) content-size 95.171875x19.15625 table-footer-group children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
Box <tr> at (10,72.40625) content-size 95.171875x19.46875 table-row children: not-inline
Box <tr> at (10,71.78125) content-size 95.171875x19.15625 table-row children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <td> at (11,73.40625) content-size 93.171875x17.46875 table-cell [BFC] children: inline
BlockContainer <td> at (11,72.625) content-size 93.171875x17.46875 table-cell [BFC] children: inline
line 0 width: 93.171875, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 11, rect: [11,73.40625 93.171875x17.46875]
frag 0 from TextNode start: 0, length: 11, rect: [11,72.625 93.171875x17.46875]
"Footer Cell"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline