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Side by Side Diff: src/core/SkBlitter.h

Issue 1316233002: Style Change: NULL->nullptr (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: 2015-08-27 (Thursday) 10:25:06 EDT Created 5 years, 3 months ago
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1 /* 1 /*
2 * Copyright 2006 The Android Open Source Project 2 * Copyright 2006 The Android Open Source Project
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 #ifndef SkBlitter_DEFINED 8 #ifndef SkBlitter_DEFINED
9 #define SkBlitter_DEFINED 9 #define SkBlitter_DEFINED
10 10
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43 on the right. 43 on the right.
44 The result will always be at least two pixels wide. 44 The result will always be at least two pixels wide.
45 */ 45 */
46 virtual void blitAntiRect(int x, int y, int width, int height, 46 virtual void blitAntiRect(int x, int y, int width, int height,
47 SkAlpha leftAlpha, SkAlpha rightAlpha); 47 SkAlpha leftAlpha, SkAlpha rightAlpha);
48 /// Blit a pattern of pixels defined by a rectangle-clipped mask; 48 /// Blit a pattern of pixels defined by a rectangle-clipped mask;
49 /// typically used for text. 49 /// typically used for text.
50 virtual void blitMask(const SkMask&, const SkIRect& clip); 50 virtual void blitMask(const SkMask&, const SkIRect& clip);
51 51
52 /** If the blitter just sets a single value for each pixel, return the 52 /** If the blitter just sets a single value for each pixel, return the
53 bitmap it draws into, and assign value. If not, return NULL and ignore 53 bitmap it draws into, and assign value. If not, return nullptr and ignor e
54 the value parameter. 54 the value parameter.
55 */ 55 */
56 virtual const SkPixmap* justAnOpaqueColor(uint32_t* value); 56 virtual const SkPixmap* justAnOpaqueColor(uint32_t* value);
57 57
58 // (x, y), (x + 1, y) 58 // (x, y), (x + 1, y)
59 virtual void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) { 59 virtual void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) {
60 int16_t runs[3]; 60 int16_t runs[3];
61 uint8_t aa[2]; 61 uint8_t aa[2];
62 62
63 runs[0] = 1; 63 runs[0] = 1;
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102 * This function returns the number of rows that this blitter could optimall y 102 * This function returns the number of rows that this blitter could optimall y
103 * process at a time. It is still required to support blitting one scanline 103 * process at a time. It is still required to support blitting one scanline
104 * at a time. 104 * at a time.
105 */ 105 */
106 virtual int requestRowsPreserved() const { return 1; } 106 virtual int requestRowsPreserved() const { return 1; }
107 107
108 /** 108 /**
109 * This function allocates memory for the blitter that the blitter then owns . 109 * This function allocates memory for the blitter that the blitter then owns .
110 * The memory can be used by the calling function at will, but it will be 110 * The memory can be used by the calling function at will, but it will be
111 * released when the blitter's destructor is called. This function returns 111 * released when the blitter's destructor is called. This function returns
112 * NULL if no persistent memory is needed by the blitter. 112 * nullptr if no persistent memory is needed by the blitter.
113 */ 113 */
114 virtual void* allocBlitMemory(size_t sz) { 114 virtual void* allocBlitMemory(size_t sz) {
115 return fBlitMemory.reset(sz, SkAutoMalloc::kReuse_OnShrink); 115 return fBlitMemory.reset(sz, SkAutoMalloc::kReuse_OnShrink);
116 } 116 }
117 117
118 ///@name non-virtual helpers 118 ///@name non-virtual helpers
119 void blitMaskRegion(const SkMask& mask, const SkRegion& clip); 119 void blitMaskRegion(const SkMask& mask, const SkRegion& clip);
120 void blitRectRegion(const SkIRect& rect, const SkRegion& clip); 120 void blitRectRegion(const SkIRect& rect, const SkRegion& clip);
121 void blitRegion(const SkRegion& clip); 121 void blitRegion(const SkRegion& clip);
122 ///@} 122 ///@}
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222 const SkRegion* fRgn; 222 const SkRegion* fRgn;
223 }; 223 };
224 224
225 /** Factory to set up the appropriate most-efficient wrapper blitter 225 /** Factory to set up the appropriate most-efficient wrapper blitter
226 to apply a clip. Returns a pointer to a member, so lifetime must 226 to apply a clip. Returns a pointer to a member, so lifetime must
227 be managed carefully. 227 be managed carefully.
228 */ 228 */
229 class SkBlitterClipper { 229 class SkBlitterClipper {
230 public: 230 public:
231 SkBlitter* apply(SkBlitter* blitter, const SkRegion* clip, 231 SkBlitter* apply(SkBlitter* blitter, const SkRegion* clip,
232 const SkIRect* bounds = NULL); 232 const SkIRect* bounds = nullptr);
233 233
234 private: 234 private:
235 SkNullBlitter fNullBlitter; 235 SkNullBlitter fNullBlitter;
236 SkRectClipBlitter fRectBlitter; 236 SkRectClipBlitter fRectBlitter;
237 SkRgnClipBlitter fRgnBlitter; 237 SkRgnClipBlitter fRgnBlitter;
238 }; 238 };
239 239
240 #endif 240 #endif
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