#ifndef Filter_h
#define Filter_h
#if ENABLE(FILTERS)
#include "FloatRect.h"
#include "FloatSize.h"
#include "ImageBuffer.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/text/StringHash.h>
namespace WebCore {
class FilterEffect;
class Filter : public RefCounted<Filter> {
public:
virtual ~Filter() { }
void setSourceImage(PassOwnPtr<ImageBuffer> sourceImage) { m_sourceImage = sourceImage; }
ImageBuffer* sourceImage() { return m_sourceImage.get(); }
FloatSize filterResolution() const { return m_filterResolution; }
void setFilterResolution(const FloatSize& filterResolution) { m_filterResolution = filterResolution; }
virtual float applyHorizontalScale(float value) const { return value * m_filterResolution.width(); }
virtual float applyVerticalScale(float value) const { return value * m_filterResolution.height(); }
virtual FloatRect sourceImageRect() const = 0;
virtual FloatRect filterRegion() const = 0;
virtual FloatPoint mapAbsolutePointToLocalPoint(const FloatPoint&) const { return FloatPoint(); }
virtual FloatRect filterRegionInUserSpace() const { return FloatRect(); }
virtual bool effectBoundingBoxMode() const = 0;
private:
OwnPtr<ImageBuffer> m_sourceImage;
FloatSize m_filterResolution;
};
}
#endif // ENABLE(FILTERS)
#endif // Filter_h