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      1 /*
      2  * Copyright 2012 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 
      9 #ifndef SkMorphologyImageFilter_DEFINED
     10 #define SkMorphologyImageFilter_DEFINED
     11 
     12 #include "SkImageFilter.h"
     13 
     14 class SK_API SkMorphologyImageFilter : public SkImageFilter {
     15 public:
     16     explicit SkMorphologyImageFilter(SkFlattenableReadBuffer& buffer);
     17     SkMorphologyImageFilter(int radiusX, int radiusY);
     18 
     19 protected:
     20     virtual void flatten(SkFlattenableWriteBuffer& buffer) SK_OVERRIDE;
     21     SkISize    radius() const { return fRadius; }
     22 
     23 private:
     24     SkISize    fRadius;
     25     typedef SkImageFilter INHERITED;
     26 };
     27 
     28 class SK_API SkDilateImageFilter : public SkMorphologyImageFilter {
     29 public:
     30     SkDilateImageFilter(int radiusX, int radiusY) : INHERITED(radiusX, radiusY) {}
     31     explicit SkDilateImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
     32 
     33     virtual bool asADilate(SkISize* radius) const SK_OVERRIDE;
     34     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
     35                                SkBitmap* result, SkIPoint* offset) SK_OVERRIDE;
     36     static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer) {
     37         return SkNEW_ARGS(SkDilateImageFilter, (buffer));
     38     }
     39     virtual Factory getFactory() SK_OVERRIDE { return CreateProc; }
     40     SK_DECLARE_FLATTENABLE_REGISTRAR()
     41 
     42     typedef SkMorphologyImageFilter INHERITED;
     43 };
     44 
     45 class SK_API SkErodeImageFilter : public SkMorphologyImageFilter {
     46 public:
     47     SkErodeImageFilter(int radiusX, int radiusY) : INHERITED(radiusX, radiusY) {}
     48     explicit SkErodeImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
     49 
     50     virtual bool asAnErode(SkISize* radius) const SK_OVERRIDE;
     51     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
     52                                SkBitmap* result, SkIPoint* offset) SK_OVERRIDE;
     53 
     54     static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer) {
     55         return SkNEW_ARGS(SkErodeImageFilter, (buffer));
     56     }
     57     virtual Factory getFactory() SK_OVERRIDE { return CreateProc; }
     58     SK_DECLARE_FLATTENABLE_REGISTRAR()
     59 
     60 private:
     61     typedef SkMorphologyImageFilter INHERITED;
     62 };
     63 
     64 #endif
     65 
     66