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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 SkDiscardablePixelRef_DEFINED | 8 #ifndef SkDiscardablePixelRef_DEFINED |
9 #define SkDiscardablePixelRef_DEFINED | 9 #define SkDiscardablePixelRef_DEFINED |
10 | 10 |
11 #include "SkDiscardableMemory.h" | 11 #include "SkDiscardableMemory.h" |
12 #include "SkImageGenerator.h" | 12 #include "SkImageGenerator.h" |
13 #include "SkImageInfo.h" | 13 #include "SkImageInfo.h" |
14 #include "SkPixelRef.h" | 14 #include "SkPixelRef.h" |
15 | 15 |
16 /** | 16 /** |
17 * A PixelRef backed by SkDiscardableMemory, with the ability to | 17 * A PixelRef backed by SkDiscardableMemory, with the ability to |
18 * re-generate the pixels (via a SkImageGenerator) if the DM is | 18 * re-generate the pixels (via a SkImageGenerator) if the DM is |
19 * purged. | 19 * purged. |
20 * | 20 * |
21 * Since SkColorTable is reference-counted, we do not support indexed | 21 * Since SkColorTable is reference-counted, we do not support indexed |
22 * color with this class; there would be no way for the discardable | 22 * color with this class; there would be no way for the discardable |
23 * memory system to unref the color table. | 23 * memory system to unref the color table. |
24 */ | 24 */ |
25 class SkDiscardablePixelRef : public SkPixelRef { | 25 class SkDiscardablePixelRef : public SkPixelRef { |
26 public: | 26 public: |
| 27 SK_DECLARE_INST_COUNT(SkDiscardablePixelRef) |
27 SK_DECLARE_UNFLATTENABLE_OBJECT() | 28 SK_DECLARE_UNFLATTENABLE_OBJECT() |
28 | 29 |
29 protected: | 30 protected: |
30 ~SkDiscardablePixelRef(); | 31 ~SkDiscardablePixelRef(); |
31 | 32 |
32 virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE; | 33 virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE; |
33 virtual void onUnlockPixels() SK_OVERRIDE; | 34 virtual void onUnlockPixels() SK_OVERRIDE; |
34 virtual bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; } | 35 virtual bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; } |
35 | 36 |
36 virtual SkData* onRefEncodedData() SK_OVERRIDE { | 37 virtual SkData* onRefEncodedData() SK_OVERRIDE { |
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52 SkDiscardableMemory::Factory* factory); | 53 SkDiscardableMemory::Factory* factory); |
53 | 54 |
54 friend bool SkInstallDiscardablePixelRef(SkImageGenerator*, | 55 friend bool SkInstallDiscardablePixelRef(SkImageGenerator*, |
55 SkBitmap*, | 56 SkBitmap*, |
56 SkDiscardableMemory::Factory*); | 57 SkDiscardableMemory::Factory*); |
57 | 58 |
58 typedef SkPixelRef INHERITED; | 59 typedef SkPixelRef INHERITED; |
59 }; | 60 }; |
60 | 61 |
61 #endif // SkDiscardablePixelRef_DEFINED | 62 #endif // SkDiscardablePixelRef_DEFINED |
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