Source/core/animation/AnimatableImage.h

/*
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#ifndef AnimatableImage_h
#define AnimatableImage_h

#include "core/animation/AnimatableValue.h"
#include "core/css/CSSCrossfadeValue.h"
#include "core/rendering/style/StyleImage.h"

namespace WebCore {

class AnimatableImage : public AnimatableValue {
public:
    virtual ~AnimatableImage() { }
    static PassRefPtr<AnimatableImage> create(StyleImage* image)
    {
        return adoptRef(new AnimatableImage(image));
    }
    PassRefPtr<CSSValue> toCSSValue() const { return m_image->cssValue(); }
    StyleImage* toStyleImage() const { return m_image.get(); }

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

private:
    AnimatableImage(StyleImage* image)
        : m_image(image)
    {
        ASSERT(m_image);
    }
    virtual AnimatableType type() const OVERRIDE { return TypeImage; }
    virtual bool equalTo(const AnimatableValue*) const OVERRIDE;

    const RefPtr<StyleImage> m_image;
};

DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableImage, isImage());

} // namespace WebCore

#endif // AnimatableImage_h