sky/engine/core/animation/animatable/AnimatableLength.h

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#ifndef SKY_ENGINE_CORE_ANIMATION_ANIMATABLE_ANIMATABLELENGTH_H_
#define SKY_ENGINE_CORE_ANIMATION_ANIMATABLE_ANIMATABLELENGTH_H_

#include "sky/engine/core/animation/animatable/AnimatableValue.h"
#include "sky/engine/platform/Length.h"

namespace blink {

class AnimatableLength final : public AnimatableValue {
public:
    static PassRefPtr<AnimatableLength> create(const Length& length)
    {
        return adoptRef(new AnimatableLength(length));
    }
    Length length(ValueRange) const;

protected:
    virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;

private:
    static PassRefPtr<AnimatableLength> create(double pixels, double percent, bool hasPixels, bool hasPercent)
    {
        return adoptRef(new AnimatableLength(pixels, percent, hasPixels, hasPercent));
    }
    AnimatableLength(const Length&);
    AnimatableLength(double pixels, double percent, bool hasPixels, bool hasPercent)
        : m_pixels(pixels)
        , m_percent(percent)
        , m_hasPixels(hasPixels)
        , m_hasPercent(hasPercent)
    {
        ASSERT(m_hasPixels || m_hasPercent);
    }
    virtual AnimatableType type() const override { return TypeLength; }
    virtual bool equalTo(const AnimatableValue*) const override;

    double m_pixels;
    double m_percent;
    bool m_hasPixels;
    bool m_hasPercent;
};

DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableLength, isLength());

} // namespace blink

#endif  // SKY_ENGINE_CORE_ANIMATION_ANIMATABLE_ANIMATABLELENGTH_H_