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- /*
- * Copyright 2015 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 SkLocalMatrixImageFilter_DEFINED
- #define SkLocalMatrixImageFilter_DEFINED
- #include "include/core/SkFlattenable.h"
- #include "include/core/SkImageFilter.h"
- /**
- * Wraps another imagefilter + matrix, such that using this filter will give the same result
- * as using the wrapped filter with the matrix applied to its context.
- */
- class SkLocalMatrixImageFilter : public SkImageFilter {
- public:
- static sk_sp<SkImageFilter> Make(const SkMatrix& localM, sk_sp<SkImageFilter> input);
- protected:
- void flatten(SkWriteBuffer&) const override;
- sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
- SkIPoint* offset) const override;
- SkIRect onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
- MapDirection, const SkIRect* inputRect) const override;
- bool onCanHandleComplexCTM() const override { return true; }
- private:
- SK_FLATTENABLE_HOOKS(SkLocalMatrixImageFilter)
- SkLocalMatrixImageFilter(const SkMatrix& localM, sk_sp<SkImageFilter> input);
- SkMatrix fLocalM;
- typedef SkImageFilter INHERITED;
- };
- #endif
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