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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))
{}
size_t contextSize() const override {
return fProxyShader->contextSize();
}
virtual BitmapType asABitmap(SkBitmap* bitmap, SkMatrix* matrix,
TileMode* mode) const override {
return fProxyShader->asABitmap(bitmap, matrix, mode);
}
GradientType asAGradient(GradientInfo* info) const override {
return fProxyShader->asAGradient(info);
}
#if SK_SUPPORT_GPU
virtual bool asFragmentProcessor(GrContext* context, const SkPaint& paint,
const SkMatrix& viewM, const SkMatrix* localMatrix,
GrColor* grColor, GrFragmentProcessor** fp) const override {
SkMatrix tmp = this->getLocalMatrix();
if (localMatrix) {
tmp.preConcat(*localMatrix);
}
return fProxyShader->asFragmentProcessor(context, paint, viewM, &tmp, grColor, fp);
}
#else
virtual bool asFragmentProcessor(GrContext*, const SkPaint&, const SkMatrix&,
const SkMatrix*, GrColor*,
GrFragmentProcessor**) const override {
SkDEBUGFAIL("Should not call in GPU-less build");
return false;
}
#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;
private:
SkAutoTUnref<SkShader> fProxyShader;
typedef SkShader INHERITED;
};
#endif
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