/*
* Copyright (C) 2012 Google 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 AND ITS CONTRIBUTORS "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 OR ITS 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 SkiaImageFilterBuilder_h
#define SkiaImageFilterBuilder_h
#include "platform/PlatformExport.h"
#include "platform/geometry/FloatSize.h"
#include "platform/graphics/ColorSpace.h"
#include "public/platform/WebFilterOperations.h"
#include "wtf/HashMap.h"
class SkImageFilter;
namespace WebCore {
class AffineTransform;
class FilterEffect;
class FilterOperations;
class GraphicsContext;
class PLATFORM_EXPORT SkiaImageFilterBuilder {
public:
SkiaImageFilterBuilder();
explicit SkiaImageFilterBuilder(GraphicsContext*);
~SkiaImageFilterBuilder();
PassRefPtr<SkImageFilter> build(FilterEffect*, ColorSpace);
bool buildFilterOperations(const FilterOperations&, blink::WebFilterOperations*);
PassRefPtr<SkImageFilter> buildTransform(const AffineTransform&, SkImageFilter* input);
PassRefPtr<SkImageFilter> transformColorSpace(
SkImageFilter* input, ColorSpace srcColorSpace, ColorSpace dstColorSpace);
void setCropOffset(const FloatSize& cropOffset) { m_cropOffset = cropOffset; };
FloatSize cropOffset() { return m_cropOffset; }
GraphicsContext* context() { return m_context; }
private:
typedef std::pair<FilterEffect*, ColorSpace> FilterColorSpacePair;
typedef HashMap<FilterColorSpacePair, RefPtr<SkImageFilter> > FilterBuilderHashMap;
FilterBuilderHashMap m_map;
FloatSize m_cropOffset;
GraphicsContext* m_context;
};
} // namespace WebCore
namespace WTF {
template<> struct DefaultHash<WebCore::ColorSpace> {
typedef IntHash<unsigned> Hash;
};
} // namespace WTF
#endif