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LibWeb: Parse calc() function in grid sizes

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Adds missing part of grid size parsing function to handle calc().
This commit is contained in:
Aliaksandr Kalenik 2023-05-10 23:46:33 +03:00 • committed by Andreas Kling
parent 7fee05e18c
commit c2f6ba8f5f
4 changed files with 42 additions and 2 deletions
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11
Tests/LibWeb/Layout/expected/grid/calc-track-size.txt Normal file
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@ -0,0 +1,11 @@
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 784x17.46875 children: not-inline
Box <div.grid-container> at (8,8) content-size 784x17.46875 [GFC] children: not-inline
BlockContainer <div.grid-item> at (8,8) content-size 200x17.46875 [BFC] children: inline
line 0 width: 31.265625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 3, rect: [8,8 31.265625x17.46875]
"Uno"
TextNode <#text>
BlockContainer <(anonymous)> at (8,25.46875) content-size 784x0 children: inline
TextNode <#text>

12
Tests/LibWeb/Layout/input/grid/calc-track-size.html Normal file
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@ -0,0 +1,12 @@
<style>
.grid-container {
display: grid;
grid-template-columns: calc(200px);
grid-template-rows: auto;
}
.grid-item {
background-color: lightskyblue;
}
</style>
<div class="grid-container"><div class="grid-item">Uno</div></div>

3
Userland/Libraries/LibWeb/CSS/GridTrackSize.cpp
View file

@ -48,6 +48,9 @@ Size GridSize::css_size() const
return CSS::Size::make_auto();
if (m_length_percentage.is_length())
return CSS::Size::make_length(m_length_percentage.length());
if (m_length_percentage.is_calculated()) {
return CSS::Size::make_calculated(m_length_percentage.calculated());
}
return CSS::Size::make_percentage(m_length_percentage.percentage());
}

18
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -6238,9 +6238,18 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_as_css_value(PropertyID property_id)
Optional<CSS::GridSize> Parser::parse_grid_size(ComponentValue const& component_value)
{
// FIXME: Parse calc here if necessary
if (component_value.is_function())
if (component_value.is_function()) {
auto const& function = component_value.function();
if (function.name().equals_ignoring_ascii_case("calc"sv)) {
auto calculated_style_value = parse_calculated_value(function.values());
if (calculated_style_value.is_error()) {
// FIXME: Propagate error
return {};
}
return GridSize(LengthPercentage { *calculated_style_value.release_value() });
}
return {};
}
auto token = component_value.token();
if (token.is(Token::Type::Dimension) && token.dimension_unit().equals_ignoring_ascii_case("fr"sv)) {
float numeric_value = token.dimension_value();
@ -6417,6 +6426,11 @@ Optional<CSS::ExplicitGridTrack> Parser::parse_track_sizing_function(ComponentVa
return CSS::ExplicitGridTrack(maybe_min_max_value.value());
else
return {};
} else if (function_token.name().equals_ignoring_ascii_case("calc"sv)) {
auto grid_size = parse_grid_size(token);
if (!grid_size.has_value())
return {};
return CSS::ExplicitGridTrack(grid_size.value());
}
return {};
} else if (token.is(Token::Type::Ident) && token.token().ident().equals_ignoring_ascii_case("auto"sv)) {