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 "SkColor.h" 13 #include "SkImageFilter.h" 14 #include "SkSize.h" 15 16 class SK_API SkMorphologyImageFilter : public SkImageFilter { 17 public: 18 virtual void computeFastBounds(const SkRect& src, SkRect* dst) const SK_OVERRIDE; 19 virtual bool onFilterBounds(const SkIRect& src, const SkMatrix& ctm, SkIRect* dst) const SK_OVERRIDE; 20 21 /** 22 * All morphology procs have the same signature: src is the source buffer, dst the 23 * destination buffer, radius is the morphology radius, width and height are the bounds 24 * of the destination buffer (in pixels), and srcStride and dstStride are the 25 * number of pixels per row in each buffer. All buffers are 8888. 26 */ 27 28 typedef void (*Proc)(const SkPMColor* src, SkPMColor* dst, int radius, 29 int width, int height, int srcStride, int dstStride); 30 31 protected: 32 SkMorphologyImageFilter(int radiusX, int radiusY, SkImageFilter* input, 33 const CropRect* cropRect); 34 bool filterImageGeneric(Proc procX, Proc procY, 35 Proxy*, const SkBitmap& src, const Context&, 36 SkBitmap* result, SkIPoint* offset) const; 37 SkMorphologyImageFilter(SkReadBuffer& buffer); 38 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; 39 #if SK_SUPPORT_GPU 40 virtual bool canFilterImageGPU() const SK_OVERRIDE { return true; } 41 bool filterImageGPUGeneric(bool dilate, Proxy* proxy, const SkBitmap& src, 42 const Context& ctm, SkBitmap* result, 43 SkIPoint* offset) const; 44 #endif 45 46 SkISize radius() const { return fRadius; } 47 48 private: 49 SkISize fRadius; 50 typedef SkImageFilter INHERITED; 51 }; 52 53 class SK_API SkDilateImageFilter : public SkMorphologyImageFilter { 54 public: 55 static SkDilateImageFilter* Create(int radiusX, int radiusY, 56 SkImageFilter* input = NULL, 57 const CropRect* cropRect = NULL) { 58 return SkNEW_ARGS(SkDilateImageFilter, (radiusX, radiusY, input, cropRect)); 59 } 60 61 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 62 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 63 #if SK_SUPPORT_GPU 64 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context&, 65 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 66 #endif 67 68 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDilateImageFilter) 69 70 protected: 71 SkDilateImageFilter(int radiusX, int radiusY, 72 SkImageFilter* input = NULL, 73 const CropRect* cropRect = NULL) 74 : INHERITED(radiusX, radiusY, input, cropRect) {} 75 explicit SkDilateImageFilter(SkReadBuffer& buffer) : INHERITED(buffer) {} 76 77 private: 78 typedef SkMorphologyImageFilter INHERITED; 79 }; 80 81 class SK_API SkErodeImageFilter : public SkMorphologyImageFilter { 82 public: 83 static SkErodeImageFilter* Create(int radiusX, int radiusY, 84 SkImageFilter* input = NULL, 85 const CropRect* cropRect = NULL) { 86 return SkNEW_ARGS(SkErodeImageFilter, (radiusX, radiusY, input, cropRect)); 87 } 88 89 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 90 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 91 #if SK_SUPPORT_GPU 92 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context&, 93 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 94 #endif 95 96 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkErodeImageFilter) 97 98 protected: 99 SkErodeImageFilter(int radiusX, int radiusY, 100 SkImageFilter* input = NULL, 101 const CropRect* cropRect = NULL) 102 : INHERITED(radiusX, radiusY, input, cropRect) {} 103 explicit SkErodeImageFilter(SkReadBuffer& buffer) : INHERITED(buffer) {} 104 105 private: 106 typedef SkMorphologyImageFilter INHERITED; 107 }; 108 109 #endif 110
