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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkColorFilterShader_DEFINED
#define SkColorFilterShader_DEFINED
#include "SkColorFilter.h"
#include "SkShaderBase.h"
class SkArenaAlloc;
class SkColorFilterShader : public SkShaderBase {
public:
SkColorFilterShader(sk_sp<SkShader> shader, sk_sp<SkColorFilter> filter);
#if SK_SUPPORT_GPU
sk_sp<GrFragmentProcessor> asFragmentProcessor(const AsFPArgs&) const override;
#endif
class FilterShaderContext : public Context {
public:
// Takes ownership of shaderContext and calls its destructor.
FilterShaderContext(const SkColorFilterShader&, SkShaderBase::Context*, const ContextRec&);
uint32_t getFlags() const override;
void shadeSpan(int x, int y, SkPMColor[], int count) override;
void shadeSpan4f(int x, int y, SkPM4f[], int count) override;
void set3DMask(const SkMask* mask) override {
// forward to our proxy
fShaderContext->set3DMask(mask);
}
private:
SkShaderBase::Context* fShaderContext;
typedef Context INHERITED;
};
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorFilterShader)
protected:
void flatten(SkWriteBuffer&) const override;
Context* onMakeContext(const ContextRec&, SkArenaAlloc* alloc) const override;
sk_sp<SkShader> onMakeColorSpace(SkColorSpaceXformer* xformer) const override;
private:
sk_sp<SkShader> fShader;
sk_sp<SkColorFilter> fFilter;
typedef SkShaderBase INHERITED;
};
#endif
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