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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkFilterShader_DEFINED
#define SkFilterShader_DEFINED
#include "SkShader.h"
class SkColorFilter;
class SkFilterShader : public SkShader {
public:
SkFilterShader(SkShader* shader, SkColorFilter* filter);
virtual ~SkFilterShader();
size_t contextSize() const SK_OVERRIDE;
class FilterShaderContext : public SkShader::Context {
public:
// Takes ownership of shaderContext and calls its destructor.
FilterShaderContext(const SkFilterShader&, SkShader::Context*, const ContextRec&);
virtual ~FilterShaderContext();
uint32_t getFlags() const SK_OVERRIDE;
void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
void set3DMask(const SkMask* mask) SK_OVERRIDE {
// forward to our proxy
fShaderContext->set3DMask(mask);
}
private:
SkShader::Context* fShaderContext;
typedef SkShader::Context INHERITED;
};
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkFilterShader)
protected:
void flatten(SkWriteBuffer&) const SK_OVERRIDE;
Context* onCreateContext(const ContextRec&, void* storage) const SK_OVERRIDE;
private:
SkShader* fShader;
SkColorFilter* fFilter;
typedef SkShader INHERITED;
};
#endif
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