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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkLocalMatrixShader_DEFINED
#define SkLocalMatrixShader_DEFINED
#include "SkShader.h"
#include "SkReadBuffer.h"
#include "SkWriteBuffer.h"
class SkLocalMatrixShader : public SkShader {
public:
SkLocalMatrixShader(SkShader* proxy, const SkMatrix& localMatrix)
: INHERITED(&localMatrix)
, fProxyShader(SkRef(proxy))
{}
GradientType asAGradient(GradientInfo* info) const override {
return fProxyShader->asAGradient(info);
}
#if SK_SUPPORT_GPU
const GrFragmentProcessor* asFragmentProcessor(GrContext* context, const SkMatrix& viewM,
const SkMatrix* localMatrix,
SkFilterQuality fq) const override {
SkMatrix tmp = this->getLocalMatrix();
if (localMatrix) {
tmp.preConcat(*localMatrix);
}
return fProxyShader->asFragmentProcessor(context, viewM, &tmp, fq);
}
#endif
SkShader* refAsALocalMatrixShader(SkMatrix* localMatrix) const override {
if (localMatrix) {
*localMatrix = this->getLocalMatrix();
}
return SkRef(fProxyShader.get());
}
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLocalMatrixShader)
protected:
void flatten(SkWriteBuffer&) const override;
Context* onCreateContext(const ContextRec&, void*) const override;
size_t onContextSize(const ContextRec& rec) const override {
return fProxyShader->contextSize(rec);
}
bool onIsABitmap(SkBitmap* bitmap, SkMatrix* matrix, TileMode* mode) const override {
return fProxyShader->isABitmap(bitmap, matrix, mode);
}
private:
SkAutoTUnref<SkShader> fProxyShader;
typedef SkShader INHERITED;
};
#endif
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