CSSCalculationValue.h [plain text]
#pragma once
#include "CSSPrimitiveValue.h"
#include "CalculationValue.h"
namespace WebCore {
class CSSParserValueList;
class CSSToLengthConversionData;
class RenderStyle;
struct CSSParserString;
enum CalculationCategory {
CalcNumber = 0,
CalcLength,
CalcPercent,
CalcPercentNumber,
CalcPercentLength,
CalcAngle,
CalcTime,
CalcFrequency,
CalcOther
};
class CSSCalcExpressionNode : public RefCounted<CSSCalcExpressionNode> {
public:
enum Type {
CssCalcPrimitiveValue = 1,
CssCalcBinaryOperation
};
virtual ~CSSCalcExpressionNode() { }
virtual bool isZero() const = 0;
virtual std::unique_ptr<CalcExpressionNode> createCalcExpression(const CSSToLengthConversionData&) const = 0;
virtual double doubleValue() const = 0;
virtual double computeLengthPx(const CSSToLengthConversionData&) const = 0;
virtual String customCSSText() const = 0;
virtual bool equals(const CSSCalcExpressionNode& other) const { return m_category == other.m_category && m_isInteger == other.m_isInteger; }
virtual Type type() const = 0;
virtual CSSPrimitiveValue::UnitTypes primitiveType() const = 0;
CalculationCategory category() const { return m_category; }
bool isInteger() const { return m_isInteger; }
protected:
CSSCalcExpressionNode(CalculationCategory category, bool isInteger)
: m_category(category)
, m_isInteger(isInteger)
{
}
private:
CalculationCategory m_category;
bool m_isInteger;
};
class CSSCalcValue : public CSSValue {
public:
static RefPtr<CSSCalcValue> create(CSSParserString name, CSSParserValueList& arguments, CalculationPermittedValueRange);
static RefPtr<CSSCalcValue> create(const CalculationValue&, const RenderStyle&);
CalculationCategory category() const { return m_expression->category(); }
bool isInt() const { return m_expression->isInteger(); }
double doubleValue() const;
bool isPositive() const { return m_expression->doubleValue() > 0; }
double computeLengthPx(const CSSToLengthConversionData&) const;
unsigned short primitiveType() const { return m_expression->primitiveType(); }
Ref<CalculationValue> createCalculationValue(const CSSToLengthConversionData&) const;
void setPermittedValueRange(CalculationPermittedValueRange);
String customCSSText() const;
bool equals(const CSSCalcValue&) const;
private:
CSSCalcValue(Ref<CSSCalcExpressionNode>&&, bool shouldClampToNonNegative);
double clampToPermittedRange(double) const;
const Ref<CSSCalcExpressionNode> m_expression;
bool m_shouldClampToNonNegative;
};
inline CSSCalcValue::CSSCalcValue(Ref<CSSCalcExpressionNode>&& expression, bool shouldClampToNonNegative)
: CSSValue(CalculationClass)
, m_expression(WTFMove(expression))
, m_shouldClampToNonNegative(shouldClampToNonNegative)
{
}
inline Ref<CalculationValue> CSSCalcValue::createCalculationValue(const CSSToLengthConversionData& conversionData) const
{
return CalculationValue::create(m_expression->createCalcExpression(conversionData),
m_shouldClampToNonNegative ? CalculationRangeNonNegative : CalculationRangeAll);
}
inline void CSSCalcValue::setPermittedValueRange(CalculationPermittedValueRange range)
{
m_shouldClampToNonNegative = range != CalculationRangeAll;
}
}
SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSCalcValue, isCalcValue())