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LibWeb/CSS: Give calc() a CalculationContext for resolving percentages

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This is passed in at construction, meaning we will be able to refer to
it later, when we're no longer inside the Parser.
This commit is contained in:
Sam Atkins 2025-01-08 16:14:17 +00:00
parent bc00ef8314
commit 4efdb76857
Notes: github-actions[bot] 2025-01-13 11:00:31 +00:00
8 changed files with 111 additions and 84 deletions
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12
Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
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@ -109,7 +109,7 @@ CalculationNode::CalculationNode(Type type, Optional<CSSNumericType> numeric_typ
CalculationNode::~CalculationNode() = default;
static CSSNumericType numeric_type_from_calculated_style_value(CalculatedStyleValue::CalculationResult::Value const& value, Optional<ValueType> percentage_resolved_type)
static CSSNumericType numeric_type_from_calculated_style_value(CalculatedStyleValue::CalculationResult::Value const& value, CalculationContext const& context)
{
// https://drafts.csswg.org/css-values-4/#determine-the-type-of-a-calculation
// Anything else is a terminal value, whose type is determined based on its CSS type.
@ -152,14 +152,14 @@ static CSSNumericType numeric_type_from_calculated_style_value(CalculatedStyleVa
return CSSNumericType { CSSNumericType::BaseType::Flex, 1 };
},
// NOTE: <calc-constant> is a separate node type. (FIXME: Should it be?)
[&percentage_resolved_type](Percentage const&) {
[&context](Percentage const&) {
// -> <percentage>
// If, in the context in which the math function containing this calculation is placed,
// <percentage>s are resolved relative to another type of value (such as in width,
// where <percentage> is resolved against a <length>), and that other type is not <number>,
// the type is determined as the other type, but with a percent hint set to that other type.
if (percentage_resolved_type.has_value() && percentage_resolved_type != ValueType::Number && percentage_resolved_type != ValueType::Percentage) {
auto base_type = CSSNumericType::base_type_from_value_type(*percentage_resolved_type);
if (context.percentages_resolve_as.has_value() && context.percentages_resolve_as != ValueType::Number && context.percentages_resolve_as != ValueType::Percentage) {
auto base_type = CSSNumericType::base_type_from_value_type(*context.percentages_resolve_as);
VERIFY(base_type.has_value());
auto result = CSSNumericType { base_type.value(), 1 };
result.set_percent_hint(base_type);
@ -174,9 +174,9 @@ static CSSNumericType numeric_type_from_calculated_style_value(CalculatedStyleVa
});
}
NonnullOwnPtr<NumericCalculationNode> NumericCalculationNode::create(NumericValue value, Optional<ValueType> percentage_resolved_type)
NonnullOwnPtr<NumericCalculationNode> NumericCalculationNode::create(NumericValue value, CalculationContext const& context)
{
auto numeric_type = numeric_type_from_calculated_style_value(value, percentage_resolved_type);
auto numeric_type = numeric_type_from_calculated_style_value(value, context);
return adopt_own(*new (nothrow) NumericCalculationNode(move(value), numeric_type));
}