/*
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* Copyright 2015 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkLocalMatrixImageFilter_DEFINED
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#define SkLocalMatrixImageFilter_DEFINED
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#include "SkFlattenable.h"
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#include "SkImageFilter.h"
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/**
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* Wraps another imagefilter + matrix, such that using this filter will give the same result
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* as using the wrapped filter with the matrix applied to its context.
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*/
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class SkLocalMatrixImageFilter : public SkImageFilter {
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public:
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static sk_sp<SkImageFilter> Make(const SkMatrix& localM, sk_sp<SkImageFilter> input);
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protected:
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void flatten(SkWriteBuffer&) const override;
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sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
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SkIPoint* offset) const override;
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sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override;
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SkIRect onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
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MapDirection, const SkIRect* inputRect) const override;
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private:
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SK_FLATTENABLE_HOOKS(SkLocalMatrixImageFilter)
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SkLocalMatrixImageFilter(const SkMatrix& localM, sk_sp<SkImageFilter> input);
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SkMatrix fLocalM;
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typedef SkImageFilter INHERITED;
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};
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#endif
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