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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 SkCachingPixelRef_DEFINED | 8 #ifndef SkCachingPixelRef_DEFINED |
9 #define SkCachingPixelRef_DEFINED | 9 #define SkCachingPixelRef_DEFINED |
10 | 10 |
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23 * Decoding is handled by the pure-virtual functions onDecodeInfo() | 23 * Decoding is handled by the pure-virtual functions onDecodeInfo() |
24 * and onDecodePixels(). Subclasses of this class need only provide | 24 * and onDecodePixels(). Subclasses of this class need only provide |
25 * those two functions. | 25 * those two functions. |
26 */ | 26 */ |
27 class SkCachingPixelRef : public SkPixelRef { | 27 class SkCachingPixelRef : public SkPixelRef { |
28 public: | 28 public: |
29 SkCachingPixelRef(); | 29 SkCachingPixelRef(); |
30 virtual ~SkCachingPixelRef(); | 30 virtual ~SkCachingPixelRef(); |
31 | 31 |
32 protected: | 32 protected: |
33 virtual void* onLockPixels(SkColorTable** colorTable) SK_OVERRIDE; | 33 virtual bool onGetInfo(SkImageInfo*) SK_OVERRIDE; |
| 34 virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE; |
34 virtual void onUnlockPixels() SK_OVERRIDE; | 35 virtual void onUnlockPixels() SK_OVERRIDE; |
35 virtual bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; } | 36 virtual bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; } |
36 virtual bool onImplementsDecodeInto() SK_OVERRIDE { return true; } | 37 virtual bool onImplementsDecodeInto() SK_OVERRIDE { return true; } |
37 virtual bool onDecodeInto(int pow2, SkBitmap*) SK_OVERRIDE; | 38 virtual bool onDecodeInto(int pow2, SkBitmap*) SK_OVERRIDE; |
38 | 39 |
39 /** | 40 /** |
40 * Configure the supplied bitmap for this pixelRef, based on | 41 * Configure the supplied bitmap for this pixelRef, based on |
41 * information provided by onDecodeInfo(). Does not set the | 42 * information provided by onDecodeInfo(). Does not set the |
42 * bitmap's pixelRef. */ | 43 * bitmap's pixelRef. */ |
43 bool configure(SkBitmap* bitmap); | 44 bool configure(SkBitmap* bitmap); |
44 | 45 |
45 /** | 46 /** |
46 * Cache info from onDecodeInfo(). Returns false on failure. | |
47 */ | |
48 bool getInfo(SkImageInfo* info); | |
49 | |
50 /** | |
51 * Return some information about the pixels, allowing this class | 47 * Return some information about the pixels, allowing this class |
52 * to allocate pixels. @return false if anything goes wrong. | 48 * to allocate pixels. @return false if anything goes wrong. |
53 */ | 49 */ |
54 virtual bool onDecodeInfo(SkImageInfo* info) = 0; | 50 virtual bool onDecodeInfo(SkImageInfo* info) = 0; |
55 /** | 51 /** |
56 * Decode into the given pixels, a block of memory of size | 52 * Decode into the given pixels, a block of memory of size |
57 * (info.fHeight - 1) * rowBytes + (info.fWidth * bytesPerPixel) | 53 * (info.fHeight - 1) * rowBytes + (info.fWidth * bytesPerPixel) |
58 * | 54 * |
59 * @param info Should be identical to the info returned by | 55 * @param info Should be identical to the info returned by |
60 * onDecodeInfo so that the implementation can confirm | 56 * onDecodeInfo so that the implementation can confirm |
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71 | 67 |
72 private: | 68 private: |
73 bool fErrorInDecoding; | 69 bool fErrorInDecoding; |
74 void* fScaledCacheId; | 70 void* fScaledCacheId; |
75 SkImageInfo fInfo; | 71 SkImageInfo fInfo; |
76 | 72 |
77 typedef SkPixelRef INHERITED; | 73 typedef SkPixelRef INHERITED; |
78 }; | 74 }; |
79 | 75 |
80 #endif // SkCachingPixelRef_DEFINED | 76 #endif // SkCachingPixelRef_DEFINED |
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