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/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FilterEffectRenderer_h
#define FilterEffectRenderer_h
#include "platform/graphics/filters/FilterEffect.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
#include "wtf/Vector.h"
namespace blink {
class FilterOperations;
class FloatRect;
class GraphicsContext;
class ReferenceFilter;
class RenderObject;
class FilterEffectRenderer final : public RefCounted<FilterEffectRenderer>
{
WTF_MAKE_FAST_ALLOCATED;
public:
virtual ~FilterEffectRenderer();
static PassRefPtr<FilterEffectRenderer> create()
{
return adoptRef(new FilterEffectRenderer());
}
bool build(RenderObject* renderer, const FilterOperations&);
bool beginFilterEffect(GraphicsContext*, const FloatRect& filterBoxRect);
void endFilterEffect(GraphicsContext*);
void clearIntermediateResults();
PassRefPtr<FilterEffect> lastEffect() const
{
return m_lastEffect;
}
private:
FilterEffectRenderer();
RefPtr<FilterEffect> m_lastEffect;
Vector<RefPtr<ReferenceFilter> > m_referenceFilters;
};
} // namespace blink
#endif // FilterEffectRenderer_h