Line data    Source code

       1             : /*
       2             :  * Copyright 2015 The Android Open Source Project
       3             :  *
       4             :  * Use of this source code is governed by a BSD-style license that can be
       5             :  * found in the LICENSE file.
       6             :  */
       7             : 
       8             : #ifndef SkLocalMatrixImageFilter_DEFINED
       9             : #define SkLocalMatrixImageFilter_DEFINED
      10             : 
      11             : #include "SkImageFilter.h"
      12             : 
      13             : /**
      14             :  *  Wraps another imagefilter + matrix, such that using this filter will give the same result
      15             :  *  as using the wrapped filter with the matrix applied to its context.
      16             :  */
      17           0 : class SkLocalMatrixImageFilter : public SkImageFilter {
      18             : public:
      19             :     static sk_sp<SkImageFilter> Make(const SkMatrix& localM, sk_sp<SkImageFilter> input);
      20             : 
      21             :     SK_TO_STRING_OVERRIDE()
      22           0 :     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLocalMatrixImageFilter)
      23             : 
      24             : protected:
      25             :     void flatten(SkWriteBuffer&) const override;
      26             :     sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
      27             :                                         SkIPoint* offset) const override;
      28             :     SkIRect onFilterBounds(const SkIRect& src, const SkMatrix&, MapDirection) const override;
      29             : 
      30             : private:
      31             :     SkLocalMatrixImageFilter(const SkMatrix& localM, sk_sp<SkImageFilter> input);
      32             : 
      33             :     SkMatrix fLocalM;
      34             : 
      35             :     typedef SkImageFilter INHERITED;
      36             : };
      37             : 
      38             : #endif