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LibWeb: Resolve inline-block percentage padding against 0, not infinity

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When the containing block has an indefinite width, any descendants with
a percentage size should resolve that against 0, not infinity.

Fixes an assertion failure when loading https://www.gnu.org/
This commit is contained in:
Andreas Kling 2023-07-06 14:38:46 +02:00 • committed by Linus Groh
parent 5955a504e0
commit 42675971e2
3 changed files with 16 additions and 1 deletions
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6
Tests/LibWeb/Layout/expected/block-and-inline/percentage-padding-on-inline-block-with-indefinite-containing-block-size.txt Normal file
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@ -0,0 +1,6 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x33.46875 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 0x17.46875 children: inline
line 0 width: 0, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from BlockContainer start: 0, length: 0, rect: [8,21 0x0]
BlockContainer <div> at (8,21) content-size 0x0 inline-block [BFC] children: not-inline

9
Tests/LibWeb/Layout/input/block-and-inline/percentage-padding-on-inline-block-with-indefinite-containing-block-size.html Normal file
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@ -0,0 +1,9 @@
<!DOCTYPE html><style>
body {
width: max-content;
}
div {
display: inline-block;
padding-left: 8%;
}
</style><body><div>

2
Userland/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
View file

@ -89,7 +89,7 @@ void InlineFormattingContext::run(Box const&, LayoutMode layout_mode, AvailableS
void InlineFormattingContext::dimension_box_on_line(Box const& box, LayoutMode layout_mode)
{
auto width_of_containing_block = m_available_space->width.to_px();
auto width_of_containing_block = m_available_space->width.to_px_or_zero();
auto& box_state = m_state.get_mutable(box);
auto const& computed_values = box.computed_values();