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/*
Copyright (C) 2008 Alex Mathews <possessedpenguinbob@gmail.com>
2009 Dirk Schulze <krit@webkit.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
aint with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef FilterEffect_h
#define FilterEffect_h
#if ENABLE(FILTERS)
#include "Filter.h"
#include "FloatRect.h"
#include "GraphicsContext.h"
#include "ImageBuffer.h"
#include "TextStream.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class FilterEffect : public RefCounted<FilterEffect> {
public:
virtual ~FilterEffect();
bool xBoundingBoxMode() const { return m_xBBoxMode; }
void setXBoundingBoxMode(bool bboxMode) { m_xBBoxMode = bboxMode; }
bool yBoundingBoxMode() const { return m_yBBoxMode; }
void setYBoundingBoxMode(bool bboxMode) { m_yBBoxMode = bboxMode; }
bool widthBoundingBoxMode() const { return m_widthBBoxMode; }
void setWidthBoundingBoxMode(bool bboxMode) { m_widthBBoxMode = bboxMode; }
bool heightBoundingBoxMode() const { return m_heightBBoxMode; }
void setHeightBoundingBoxMode(bool bboxMode) { m_heightBBoxMode = bboxMode; }
void setUnionOfChildEffectSubregions(const FloatRect& uniteRect) { m_unionOfChildEffectSubregions = uniteRect; }
FloatRect unionOfChildEffectSubregions() const { return m_unionOfChildEffectSubregions; }
FloatRect subRegion() const { return m_subRegion; }
void setSubRegion(const FloatRect& subRegion) { m_subRegion = subRegion; }
bool hasX() { return m_hasX; }
void setHasX(bool value) { m_hasX = value; }
bool hasY() { return m_hasY; }
void setHasY(bool value) { m_hasY = value; }
bool hasWidth() { return m_hasWidth; }
void setHasWidth(bool value) { m_hasWidth = value; }
bool hasHeight() { return m_hasHeight; }
void setHasHeight(bool value) { m_hasHeight = value; }
// The result is bounded by the size of the filter primitive to save resources
ImageBuffer* resultImage() { return m_effectBuffer.get(); }
void setEffectBuffer(PassOwnPtr<ImageBuffer> effectBuffer) { m_effectBuffer = effectBuffer; }
FloatRect calculateUnionOfChildEffectSubregions(Filter*, FilterEffect*, FilterEffect*);
FloatRect calculateUnionOfChildEffectSubregions(Filter*, FilterEffect*);
GraphicsContext* getEffectContext();
FloatRect calculateDrawingRect(const FloatRect&);
IntRect calculateDrawingIntRect(const FloatRect&);
virtual FloatRect uniteChildEffectSubregions(Filter* filter) { return filter->filterRegion(); }
virtual FloatRect calculateEffectRect(Filter*);
virtual void apply(Filter*) = 0;
virtual void dump() = 0;
virtual bool isSourceInput() { return false; }
virtual TextStream& externalRepresentation(TextStream&) const;
protected:
FilterEffect();
private:
bool m_xBBoxMode : 1;
bool m_yBBoxMode : 1;
bool m_widthBBoxMode : 1;
bool m_heightBBoxMode : 1;
bool m_hasX : 1;
bool m_hasY : 1;
bool m_hasWidth : 1;
bool m_hasHeight : 1;
FloatRect m_subRegion;
FloatRect m_unionOfChildEffectSubregions;
mutable OwnPtr<ImageBuffer> m_effectBuffer;
};
} // namespace WebCore
#endif // ENABLE(FILTERS)
#endif // FilterEffect_h
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