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/*
* Copyright (C) 2012 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDER “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 THE COPYRIGHT HOLDER 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 CustomFilterOperation_h
#define CustomFilterOperation_h
#if ENABLE(CSS_SHADERS)
#include "CustomFilterProgram.h"
#include "FilterOperation.h"
#include <wtf/text/WTFString.h>
namespace WebCore {
// CSS Shaders
class CustomFilterParameter;
typedef Vector<RefPtr<CustomFilterParameter> > CustomFilterParameterList;
bool customFilterParametersEqual(const CustomFilterParameterList&, const CustomFilterParameterList&);
void blendCustomFilterParameters(const CustomFilterParameterList& listFrom, const CustomFilterParameterList& listTo, double progress, CustomFilterParameterList& resultList);
class CustomFilterOperation : public FilterOperation {
public:
enum MeshBoxType {
FILTER_BOX,
BORDER_BOX,
PADDING_BOX,
CONTENT_BOX
};
enum MeshType {
ATTACHED,
DETACHED
};
static PassRefPtr<CustomFilterOperation> create(PassRefPtr<CustomFilterProgram> program, const CustomFilterParameterList& sortedParameters, unsigned meshRows, unsigned meshColumns, MeshBoxType meshBoxType, MeshType meshType)
{
return adoptRef(new CustomFilterOperation(program, sortedParameters, meshRows, meshColumns, meshBoxType, meshType));
}
virtual PassRefPtr<FilterOperation> clone() const
{
// Some member vars (e.g., m_program) are not thread-safe, so
// we can't be cloned.
return 0;
}
CustomFilterProgram* program() const { return m_program.get(); }
const CustomFilterParameterList& parameters() { return m_parameters; }
unsigned meshRows() const { return m_meshRows; }
unsigned meshColumns() const { return m_meshColumns; }
MeshBoxType meshBoxType() const { return m_meshBoxType; }
MeshType meshType() const { return m_meshType; }
virtual ~CustomFilterOperation();
virtual bool affectsOpacity() const { return true; }
virtual bool movesPixels() const { return true; }
virtual PassRefPtr<FilterOperation> blend(const FilterOperation* from, double progress, bool blendToPassthrough = false);
private:
virtual bool operator==(const FilterOperation& o) const
{
if (!isSameType(o))
return false;
const CustomFilterOperation* other = static_cast<const CustomFilterOperation*>(&o);
return *m_program.get() == *other->m_program.get()
&& m_meshRows == other->m_meshRows
&& m_meshColumns == other->m_meshColumns
&& m_meshBoxType == other->m_meshBoxType
&& m_meshType == other->m_meshType
&& customFilterParametersEqual(m_parameters, other->m_parameters);
}
CustomFilterOperation(PassRefPtr<CustomFilterProgram>, const CustomFilterParameterList&, unsigned meshRows, unsigned meshColumns, MeshBoxType, MeshType);
RefPtr<CustomFilterProgram> m_program;
CustomFilterParameterList m_parameters;
unsigned m_meshRows;
unsigned m_meshColumns;
MeshBoxType m_meshBoxType;
MeshType m_meshType;
};
} // namespace WebCore
#endif // ENABLE(CSS_SHADERS)
#endif // CustomFilterOperation_h
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