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/*
* Copyright 2014 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkMatrixImageFilter_DEFINED
#define SkMatrixImageFilter_DEFINED
#include "SkFlattenable.h"
#include "SkImageFilter.h"
#include "SkMatrix.h"
/*! \class SkMatrixImageFilter
Matrix transformation image filter. This filter draws its source
input transformed by the given matrix.
*/
class SkMatrixImageFilter : public SkImageFilter {
public:
/** Construct a 2D transformation image filter.
* @param transform The matrix to apply when drawing the src bitmap
* @param filterQuality The quality of filtering to apply when scaling.
* @param input The input image filter. If nullptr, the src bitmap
* passed to filterImage() is used instead.
*/
static sk_sp<SkImageFilter> Make(const SkMatrix& transform,
SkFilterQuality filterQuality,
sk_sp<SkImageFilter> input);
SkRect computeFastBounds(const SkRect&) const override;
Factory getFactory() const override { return CreateProc; }
protected:
SkMatrixImageFilter(const SkMatrix& transform,
SkFilterQuality,
sk_sp<SkImageFilter> input);
void flatten(SkWriteBuffer&) const override;
sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
SkIPoint* offset) const override;
sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override;
SkIRect onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
MapDirection, const SkIRect* inputRect) const override;
private:
static sk_sp<SkFlattenable> CreateProc(SkReadBuffer&);
friend class SkFlattenable::PrivateInitializer;
SkMatrix fTransform;
SkFilterQuality fFilterQuality;
typedef SkImageFilter INHERITED;
};
#endif
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