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LibWeb: Add a way to ask if a PercentageOr<T> value contains percentages

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Values that contain percentages require special treatment in various
parts of layout. Previously we had no way of peeking into calc() values
to see if their expression contains one or more percentages. That's the
bulk of what we're adding here.
This commit is contained in:
Andreas Kling 2022-09-14 11:28:15 +02:00
parent 3dd11a007f
commit 55ad9591df
3 changed files with 65 additions and 0 deletions
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9
Userland/Libraries/LibWeb/CSS/StyleValue.h
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@ -609,6 +609,7 @@ public:
String to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
bool contains_percentage() const;
};
// This represents that: https://www.w3.org/TR/css-values-3/#calc-syntax
@ -623,6 +624,8 @@ public:
String to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
bool contains_percentage() const;
};
struct CalcNumberSum {
@ -645,6 +648,7 @@ public:
String to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
bool contains_percentage() const;
};
struct CalcSumPartWithOperator {
@ -658,6 +662,7 @@ public:
String to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
bool contains_percentage() const;
};
struct CalcProductPartWithOperator {
@ -667,6 +672,8 @@ public:
String to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
bool contains_percentage() const;
};
struct CalcNumberProduct {
@ -734,6 +741,8 @@ public:
Optional<float> resolve_number();
Optional<i64> resolve_integer();
bool contains_percentage() const;
private:
explicit CalculatedStyleValue(NonnullOwnPtr<CalcSum> calc_sum, ResolvedType resolved_type)
: StyleValue(Type::Calculated)