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 16class SK_API SkMorphologyImageFilter : public SkImageFilter { 17public: 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 31protected: 32 SkMorphologyImageFilter(int radiusX, int radiusY, SkImageFilter* input, 33 const CropRect* cropRect, uint32_t uniqueID); 34 bool filterImageGeneric(Proc procX, Proc procY, 35 Proxy*, const SkBitmap& src, const Context&, 36 SkBitmap* result, SkIPoint* offset) const; 37#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING 38 SkMorphologyImageFilter(SkReadBuffer& buffer); 39#endif 40 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; 41#if SK_SUPPORT_GPU 42 virtual bool canFilterImageGPU() const SK_OVERRIDE { return true; } 43 bool filterImageGPUGeneric(bool dilate, Proxy* proxy, const SkBitmap& src, 44 const Context& ctm, SkBitmap* result, 45 SkIPoint* offset) const; 46#endif 47 48 SkISize radius() const { return fRadius; } 49 50private: 51 SkISize fRadius; 52 typedef SkImageFilter INHERITED; 53}; 54 55class SK_API SkDilateImageFilter : public SkMorphologyImageFilter { 56public: 57 static SkDilateImageFilter* Create(int radiusX, int radiusY, 58 SkImageFilter* input = NULL, 59 const CropRect* cropRect = NULL, 60 uint32_t uniqueID = 0) { 61 if (radiusX < 0 || radiusY < 0) { 62 return NULL; 63 } 64 return SkNEW_ARGS(SkDilateImageFilter, (radiusX, radiusY, input, cropRect, uniqueID)); 65 } 66 67 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 68 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 69#if SK_SUPPORT_GPU 70 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context&, 71 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 72#endif 73 74 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDilateImageFilter) 75 76protected: 77 SkDilateImageFilter(int radiusX, int radiusY, SkImageFilter* input, const CropRect* cropRect, uint32_t uniqueID) 78 : INHERITED(radiusX, radiusY, input, cropRect, uniqueID) {} 79#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING 80 explicit SkDilateImageFilter(SkReadBuffer& buffer) : INHERITED(buffer) {} 81#endif 82 83private: 84 typedef SkMorphologyImageFilter INHERITED; 85}; 86 87class SK_API SkErodeImageFilter : public SkMorphologyImageFilter { 88public: 89 static SkErodeImageFilter* Create(int radiusX, int radiusY, 90 SkImageFilter* input = NULL, 91 const CropRect* cropRect = NULL, 92 uint32_t uniqueID = 0) { 93 if (radiusX < 0 || radiusY < 0) { 94 return NULL; 95 } 96 return SkNEW_ARGS(SkErodeImageFilter, (radiusX, radiusY, input, cropRect, uniqueID)); 97 } 98 99 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 100 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 101#if SK_SUPPORT_GPU 102 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context&, 103 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 104#endif 105 106 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkErodeImageFilter) 107 108protected: 109 SkErodeImageFilter(int radiusX, int radiusY, SkImageFilter* input, const CropRect* cropRect, uint32_t uniqueID) 110 : INHERITED(radiusX, radiusY, input, cropRect, uniqueID) {} 111#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING 112 explicit SkErodeImageFilter(SkReadBuffer& buffer) : INHERITED(buffer) {} 113#endif 114 115private: 116 typedef SkMorphologyImageFilter INHERITED; 117}; 118 119#endif 120