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LibWeb/CSS: Wrap calc()-resolution data in a struct

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Initially I added this to the existing CalculationContext, but in
reality, we have some data at parse-time and different data at
resolve-time, so it made more sense to keep those separate.

Instead of needing a variety of methods for resolving a Foo, depending
on whether we have a Layout::Node available, or a percentage basis, or
a length resolution context... put those in a
CalculationResolutionContext, and just pass that one thing to these
methods. This also removes the need for separate resolve_*_percentage()
methods, because we can just pass the percentage basis in to the regular
resolve_foo() method.

This also corrects the issue that *any* calculation may need to resolve
lengths, but we previously only passed a length resolution context to
specific types in some situations. Now, they can all have one available,
though it's up to the caller to provide it.
This commit is contained in:
Sam Atkins 2025-01-22 16:05:32 +00:00 • committed by Andreas Kling
commit 1d71662f31
Notes: github-actions[bot] 2025-01-30 18:33:58 +00:00
18 changed files with 256 additions and 309 deletions
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5
Libraries/LibWeb/CSS/StyleValues/CSSRGB.cpp
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@ -32,10 +32,11 @@ Color CSSRGB::to_color(Optional<Layout::NodeWithStyle const&>) const
if (style_value.is_calculated()) {
auto const& calculated = style_value.as_calculated();
CalculationResolutionContext context {};
if (calculated.resolves_to_number())
return normalized(calculated.resolve_number().value());
return normalized(calculated.resolve_number(context).value());
if (calculated.resolves_to_percentage())
return normalized(calculated.resolve_percentage().value().value() * 255 / 100);
return normalized(calculated.resolve_percentage(context).value().value() * 255 / 100);
}
if (style_value.is_keyword() && style_value.to_keyword() == Keyword::None)