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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)
: fProxyShader(SkRef(proxy))
, fProxyLocalMatrix(localMatrix)
{}
virtual size_t contextSize() const SK_OVERRIDE {
return fProxyShader->contextSize();
}
virtual BitmapType asABitmap(SkBitmap* bitmap, SkMatrix* matrix,
TileMode* mode) const SK_OVERRIDE {
return fProxyShader->asABitmap(bitmap, matrix, mode);
}
virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE {
return fProxyShader->asAGradient(info);
}
#if SK_SUPPORT_GPU
virtual bool asNewEffect(GrContext* context, const SkPaint& paint, const SkMatrix* localMatrix,
GrColor* grColor, GrEffectRef** grEffect) const SK_OVERRIDE {
SkMatrix tmp = fProxyLocalMatrix;
if (localMatrix) {
tmp.preConcat(*localMatrix);
}
return fProxyShader->asNewEffect(context, paint, &tmp, grColor, grEffect);
}
#else
virtual bool asNewEffect(GrContext* context, const SkPaint& paint, const SkMatrix* localMatrix,
GrColor* grColor, GrEffectRef** grEffect) const SK_OVERRIDE {
SkDEBUGFAIL("Should not call in GPU-less build");
return false;
}
#endif
virtual SkShader* refAsALocalMatrixShader(SkMatrix* localMatrix) const SK_OVERRIDE {
if (localMatrix) {
*localMatrix = fProxyLocalMatrix;
}
return SkRef(fProxyShader.get());
}
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLocalMatrixShader)
protected:
SkLocalMatrixShader(SkReadBuffer&);
virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
virtual Context* onCreateContext(const ContextRec&, void*) const SK_OVERRIDE;
private:
SkAutoTUnref<SkShader> fProxyShader;
SkMatrix fProxyLocalMatrix;
typedef SkShader INHERITED;
};
#endif
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