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31 #ifndef CalculationValue_h
32 #define CalculationValue_h
34 #include "platform/Length.h"
35 #include "platform/LengthFunctions.h"
36 #include "wtf/OwnPtr.h"
37 #include "wtf/PassOwnPtr.h"
38 #include "wtf/RefCounted.h"
42 class PLATFORM_EXPORT CalculationValue : public RefCounted<CalculationValue> {
44 static PassRefPtr<CalculationValue> create(PixelsAndPercent value, ValueRange range)
46 return adoptRef(new CalculationValue(value, range));
49 float evaluate(float maxValue) const
51 float value = pixels() + percent() / 100 * maxValue;
52 return (isNonNegative() && value < 0) ? 0 : value;
54 bool operator==(const CalculationValue& o) const { return pixels() == o.pixels() && percent() == o.percent(); }
55 bool isNonNegative() const { return m_isNonNegative; }
56 float pixels() const { return m_value.pixels; }
57 float percent() const { return m_value.percent; }
58 PixelsAndPercent pixelsAndPercent() const { return m_value; }
61 CalculationValue(PixelsAndPercent value, ValueRange range)
63 , m_isNonNegative(range == ValueRangeNonNegative)
67 PixelsAndPercent m_value;
73 #endif // CalculationValue_h