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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
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 SkPixmap_DEFINED | 8 #ifndef SkPixmap_DEFINED |
9 #define SkPixmap_DEFINED | 9 #define SkPixmap_DEFINED |
10 | 10 |
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126 bool readPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBy
tes) const { | 126 bool readPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBy
tes) const { |
127 return this->readPixels(dstInfo, dstPixels, dstRowBytes, 0, 0); | 127 return this->readPixels(dstInfo, dstPixels, dstRowBytes, 0, 0); |
128 } | 128 } |
129 bool readPixels(const SkPixmap& dst, int srcX, int srcY) const { | 129 bool readPixels(const SkPixmap& dst, int srcX, int srcY) const { |
130 return this->readPixels(dst.info(), dst.writable_addr(), dst.rowBytes(),
srcX, srcY); | 130 return this->readPixels(dst.info(), dst.writable_addr(), dst.rowBytes(),
srcX, srcY); |
131 } | 131 } |
132 bool readPixels(const SkPixmap& dst) const { | 132 bool readPixels(const SkPixmap& dst) const { |
133 return this->readPixels(dst.info(), dst.writable_addr(), dst.rowBytes(),
0, 0); | 133 return this->readPixels(dst.info(), dst.writable_addr(), dst.rowBytes(),
0, 0); |
134 } | 134 } |
135 | 135 |
136 /** | |
137 * Returns true if pixels were written to (e.g. if colorType is kUnknown_Sk
ColorType, this | |
138 * will return false). If subset does not intersect the bounds of this pixm
ap, returns false. | |
139 */ | |
140 bool erase(SkColor, const SkIRect& subset) const; | |
141 | |
142 bool erase(SkColor color) const { return this->erase(color, this->bounds());
} | |
143 | |
144 private: | 136 private: |
145 const void* fPixels; | 137 const void* fPixels; |
146 SkColorTable* fCTable; | 138 SkColorTable* fCTable; |
147 size_t fRowBytes; | 139 size_t fRowBytes; |
148 SkImageInfo fInfo; | 140 SkImageInfo fInfo; |
149 }; | 141 }; |
150 | 142 |
151 ////////////////////////////////////////////////////////////////////////////////
///////////// | 143 ////////////////////////////////////////////////////////////////////////////////
///////////// |
152 | 144 |
153 class SkAutoPixmapStorage : public SkPixmap { | 145 class SkAutoPixmapStorage : public SkPixmap { |
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166 | 158 |
167 /** | 159 /** |
168 * Allocate memory for the pixels needed to match the specified Info and fi
ll out the pixmap | 160 * Allocate memory for the pixels needed to match the specified Info and fi
ll out the pixmap |
169 * to point to that memory. The storage will be freed when this object is d
estroyed, | 161 * to point to that memory. The storage will be freed when this object is d
estroyed, |
170 * or if another call to tryAlloc() or alloc() is made. | 162 * or if another call to tryAlloc() or alloc() is made. |
171 * | 163 * |
172 * If the memory cannot be allocated, calls sk_throw(). | 164 * If the memory cannot be allocated, calls sk_throw(). |
173 */ | 165 */ |
174 void alloc(const SkImageInfo&); | 166 void alloc(const SkImageInfo&); |
175 | 167 |
176 // We wrap these so we can clear our internal storage | |
177 | |
178 void reset() { | |
179 this->freeStorage(); | |
180 this->INHERITED::reset(); | |
181 } | |
182 void reset(const SkImageInfo& info, const void* addr, size_t rb, SkColorTabl
e* ctable = NULL) { | |
183 this->freeStorage(); | |
184 this->INHERITED::reset(info, addr, rb, ctable); | |
185 } | |
186 void reset(const SkImageInfo& info) { | |
187 this->freeStorage(); | |
188 this->INHERITED::reset(info); | |
189 } | |
190 bool SK_WARN_UNUSED_RESULT reset(const SkMask& mask) { | |
191 this->freeStorage(); | |
192 return this->INHERITED::reset(mask); | |
193 } | |
194 | |
195 private: | 168 private: |
196 void* fStorage; | 169 void* fStorage; |
197 | |
198 void freeStorage() { | |
199 sk_free(fStorage); | |
200 fStorage = NULL; | |
201 } | |
202 | |
203 typedef SkPixmap INHERITED; | |
204 }; | 170 }; |
205 | 171 |
206 ////////////////////////////////////////////////////////////////////////////////
///////////// | 172 ////////////////////////////////////////////////////////////////////////////////
///////////// |
207 | 173 |
208 class SkAutoPixmapUnlock : ::SkNoncopyable { | 174 class SkAutoPixmapUnlock : ::SkNoncopyable { |
209 public: | 175 public: |
210 SkAutoPixmapUnlock() : fUnlockProc(NULL), fIsLocked(false) {} | 176 SkAutoPixmapUnlock() : fUnlockProc(NULL), fIsLocked(false) {} |
211 SkAutoPixmapUnlock(const SkPixmap& pm, void (*unlock)(void*), void* ctx) | 177 SkAutoPixmapUnlock(const SkPixmap& pm, void (*unlock)(void*), void* ctx) |
212 : fUnlockProc(unlock), fUnlockContext(ctx), fPixmap(pm), fIsLocked(true) | 178 : fUnlockProc(unlock), fUnlockContext(ctx), fPixmap(pm), fIsLocked(true) |
213 {} | 179 {} |
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245 private: | 211 private: |
246 void (*fUnlockProc)(void*); | 212 void (*fUnlockProc)(void*); |
247 void* fUnlockContext; | 213 void* fUnlockContext; |
248 SkPixmap fPixmap; | 214 SkPixmap fPixmap; |
249 bool fIsLocked; | 215 bool fIsLocked; |
250 | 216 |
251 friend class SkBitmap; | 217 friend class SkBitmap; |
252 }; | 218 }; |
253 | 219 |
254 #endif | 220 #endif |
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