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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2008 The Android Open Source Project | 3 * Copyright 2008 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkPixelRef_DEFINED | 10 #ifndef SkPixelRef_DEFINED |
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38 | 38 |
39 /** \class SkPixelRef | 39 /** \class SkPixelRef |
40 | 40 |
41 This class is the smart container for pixel memory, and is used with | 41 This class is the smart container for pixel memory, and is used with |
42 SkBitmap. A pixelref is installed into a bitmap, and then the bitmap can | 42 SkBitmap. A pixelref is installed into a bitmap, and then the bitmap can |
43 access the actual pixel memory by calling lockPixels/unlockPixels. | 43 access the actual pixel memory by calling lockPixels/unlockPixels. |
44 | 44 |
45 This class can be shared/accessed between multiple threads. | 45 This class can be shared/accessed between multiple threads. |
46 */ | 46 */ |
47 class SK_API SkPixelRef : public SkFlattenable { | 47 class SK_API SkPixelRef : public SkFlattenable { |
| 48 typedef SkFlattenable INHERITED; |
| 49 |
48 public: | 50 public: |
49 SK_DECLARE_INST_COUNT(SkPixelRef) | 51 SK_DECLARE_INST_COUNT(SkPixelRef) |
50 | 52 |
51 explicit SkPixelRef(SkBaseMutex* mutex = NULL); | 53 explicit SkPixelRef(SkBaseMutex* mutex = NULL); |
52 | 54 |
53 /** Return the pixel memory returned from lockPixels, or null if the | 55 /** Return the pixel memory returned from lockPixels, or null if the |
54 lockCount is 0. | 56 lockCount is 0. |
55 */ | 57 */ |
56 void* pixels() const { return fPixels; } | 58 void* pixels() const { return fPixels; } |
57 | 59 |
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200 virtual void globalRef(void* data=NULL); | 202 virtual void globalRef(void* data=NULL); |
201 | 203 |
202 /** | 204 /** |
203 * Release a "global" ref on this object. | 205 * Release a "global" ref on this object. |
204 * The default implementation just calls unref(), but subclasses can overri
de | 206 * The default implementation just calls unref(), but subclasses can overri
de |
205 * this method to implement additional behavior. | 207 * this method to implement additional behavior. |
206 */ | 208 */ |
207 virtual void globalUnref(); | 209 virtual void globalUnref(); |
208 #endif | 210 #endif |
209 | 211 |
| 212 SK_DEFINE_FLATTENABLE_TYPE(SkPixelRef) |
| 213 |
210 protected: | 214 protected: |
211 /** Called when the lockCount goes from 0 to 1. The caller will have already | 215 /** Called when the lockCount goes from 0 to 1. The caller will have already |
212 acquire a mutex for thread safety, so this method need not do that. | 216 acquire a mutex for thread safety, so this method need not do that. |
213 */ | 217 */ |
214 virtual void* onLockPixels(SkColorTable**) = 0; | 218 virtual void* onLockPixels(SkColorTable**) = 0; |
215 /** Called when the lock count goes from 1 to 0. The caller will have | 219 /** Called when the lock count goes from 1 to 0. The caller will have |
216 already acquire a mutex for thread safety, so this method need not do | 220 already acquire a mutex for thread safety, so this method need not do |
217 that. | 221 that. |
218 */ | 222 */ |
219 virtual void onUnlockPixels() = 0; | 223 virtual void onUnlockPixels() = 0; |
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265 friend class SkBitmap; | 269 friend class SkBitmap; |
266 | 270 |
267 SkString fURI; | 271 SkString fURI; |
268 | 272 |
269 // can go from false to true, but never from true to false | 273 // can go from false to true, but never from true to false |
270 bool fIsImmutable; | 274 bool fIsImmutable; |
271 // only ever set in constructor, const after that | 275 // only ever set in constructor, const after that |
272 bool fPreLocked; | 276 bool fPreLocked; |
273 | 277 |
274 void setMutex(SkBaseMutex* mutex); | 278 void setMutex(SkBaseMutex* mutex); |
275 | |
276 typedef SkFlattenable INHERITED; | |
277 }; | 279 }; |
278 | 280 |
279 #endif | 281 #endif |
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