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LibWeb: Implement CSS round()

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stelar7 2023-05-27 16:07:50 +02:00 • committed by Sam Atkins
parent ec0054da06
commit b2230c826b
4 changed files with 210 additions and 0 deletions
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34
Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.h
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@ -125,6 +125,14 @@ public:
MinusInfinity,
};
// https://drafts.csswg.org/css-values-4/#round-func
enum class RoundingMode {
Nearest,
Up,
Down,
TowardZero
};
enum class Type {
Numeric,
// NOTE: Currently, any value with a `var()` or `attr()` function in it is always an
@ -170,6 +178,12 @@ public:
Log,
Exp,
// Stepped value functions, a sub-type of operator node
// https://drafts.csswg.org/css-values-4/#round-func
Round,
Mod,
Rem,
// This only exists during parsing.
Unparsed,
};
@ -623,4 +637,24 @@ private:
NonnullOwnPtr<CalculationNode> m_value;
};
class RoundCalculationNode final : public CalculationNode {
public:
static ErrorOr<NonnullOwnPtr<RoundCalculationNode>> create(CalculationNode::RoundingMode, NonnullOwnPtr<CalculationNode>, NonnullOwnPtr<CalculationNode>);
~RoundCalculationNode();
virtual ErrorOr<String> to_string() const override;
virtual Optional<CalculatedStyleValue::ResolvedType> resolved_type() const override;
virtual bool contains_percentage() const override;
virtual CalculatedStyleValue::CalculationResult resolve(Optional<Length::ResolutionContext const&>, CalculatedStyleValue::PercentageBasis const&) const override;
virtual ErrorOr<void> for_each_child_node(Function<ErrorOr<void>(NonnullOwnPtr<CalculationNode>&)> const&) override;
virtual ErrorOr<void> dump(StringBuilder&, int indent) const override;
private:
RoundCalculationNode(RoundingMode, NonnullOwnPtr<CalculationNode>, NonnullOwnPtr<CalculationNode>);
CalculationNode::RoundingMode m_mode;
NonnullOwnPtr<CalculationNode> m_x;
NonnullOwnPtr<CalculationNode> m_y;
};
}