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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 SkPictureShader_DEFINED | 8 #ifndef SkPictureShader_DEFINED |
9 #define SkPictureShader_DEFINED | 9 #define SkPictureShader_DEFINED |
10 | 10 |
11 #include "SkShader.h" | 11 #include "SkShader.h" |
12 | 12 |
13 class SkBitmap; | 13 class SkBitmap; |
14 class SkPicture; | 14 class SkPicture; |
15 | 15 |
16 /* | 16 /* |
17 * An SkPictureShader can be used to draw SkPicture-based patterns. | 17 * An SkPictureShader can be used to draw SkPicture-based patterns. |
18 * | 18 * |
19 * The SkPicture is first rendered into a tile, which is then used to shade the
area according | 19 * The SkPicture is first rendered into a tile, which is then used to shade the
area according |
20 * to specified tiling rules. | 20 * to specified tiling rules. |
21 */ | 21 */ |
22 class SkPictureShader : public SkShader { | 22 class SkPictureShader : public SkShader { |
23 public: | 23 public: |
24 static SkPictureShader* Create(SkPicture*, TileMode, TileMode, const SkMatri
x* = NULL); | 24 static SkPictureShader* Create(SkPicture*, TileMode, TileMode, const SkMatri
x* = NULL); |
25 virtual ~SkPictureShader(); | 25 virtual ~SkPictureShader(); |
26 | 26 |
27 virtual bool validContext(const ContextRec&, SkMatrix* totalInverse) const S
K_OVERRIDE; | |
28 virtual SkShader::Context* createContext(const ContextRec&, void* storage) c
onst SK_OVERRIDE; | |
29 virtual size_t contextSize() const SK_OVERRIDE; | 27 virtual size_t contextSize() const SK_OVERRIDE; |
30 | 28 |
31 class PictureShaderContext : public SkShader::Context { | |
32 public: | |
33 PictureShaderContext(const SkPictureShader&, const ContextRec&, SkShader
* bitmapShader); | |
34 virtual ~PictureShaderContext(); | |
35 | |
36 virtual uint32_t getFlags() const SK_OVERRIDE; | |
37 | |
38 virtual ShadeProc asAShadeProc(void** ctx) SK_OVERRIDE; | |
39 virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count) SK_OVE
RRIDE; | |
40 virtual void shadeSpan16(int x, int y, uint16_t dstC[], int count) SK_OV
ERRIDE; | |
41 | |
42 private: | |
43 SkAutoTUnref<SkShader> fBitmapShader; | |
44 SkShader::Context* fBitmapShaderContext; | |
45 void* fBitmapShaderContextStorage; | |
46 | |
47 typedef SkShader::Context INHERITED; | |
48 }; | |
49 | |
50 SK_TO_STRING_OVERRIDE() | 29 SK_TO_STRING_OVERRIDE() |
51 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPictureShader) | 30 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPictureShader) |
52 | 31 |
53 #if SK_SUPPORT_GPU | 32 #if SK_SUPPORT_GPU |
54 GrEffectRef* asNewEffect(GrContext*, const SkPaint&) const SK_OVERRIDE; | 33 GrEffectRef* asNewEffect(GrContext*, const SkPaint&) const SK_OVERRIDE; |
55 #endif | 34 #endif |
56 | 35 |
57 protected: | 36 protected: |
58 SkPictureShader(SkReadBuffer&); | 37 SkPictureShader(SkReadBuffer&); |
59 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; | 38 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; |
| 39 virtual Context* onCreateContext(const ContextRec&, void* storage) const SK_
OVERRIDE; |
60 | 40 |
61 private: | 41 private: |
62 SkPictureShader(SkPicture*, TileMode, TileMode, const SkMatrix* = NULL); | 42 SkPictureShader(SkPicture*, TileMode, TileMode, const SkMatrix* = NULL); |
63 | 43 |
64 SkShader* validInternal(const ContextRec&, SkMatrix* totalInverse) const; | |
65 SkShader* refBitmapShader(const SkMatrix&) const; | 44 SkShader* refBitmapShader(const SkMatrix&) const; |
66 | 45 |
67 SkPicture* fPicture; | 46 SkPicture* fPicture; |
68 TileMode fTmx, fTmy; | 47 TileMode fTmx, fTmy; |
69 | 48 |
70 mutable SkMutex fCachedBitmapShaderMutex; | 49 mutable SkMutex fCachedBitmapShaderMutex; |
71 mutable SkAutoTUnref<SkShader> fCachedBitmapShader; | 50 mutable SkAutoTUnref<SkShader> fCachedBitmapShader; |
72 mutable SkSize fCachedTileScale; | 51 mutable SkSize fCachedTileScale; |
73 mutable SkMatrix fCachedLocalMatrix; | 52 mutable SkMatrix fCachedLocalMatrix; |
74 | 53 |
| 54 class PictureShaderContext : public SkShader::Context { |
| 55 public: |
| 56 static Context* Create(void* storage, const SkPictureShader&, const Cont
extRec&, |
| 57 SkShader* bitmapShader); |
| 58 |
| 59 virtual ~PictureShaderContext(); |
| 60 |
| 61 virtual uint32_t getFlags() const SK_OVERRIDE; |
| 62 |
| 63 virtual ShadeProc asAShadeProc(void** ctx) SK_OVERRIDE; |
| 64 virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count) SK_OVE
RRIDE; |
| 65 virtual void shadeSpan16(int x, int y, uint16_t dstC[], int count) SK_OV
ERRIDE; |
| 66 |
| 67 private: |
| 68 PictureShaderContext(const SkPictureShader&, const ContextRec&, SkShader
* bitmapShader); |
| 69 |
| 70 SkAutoTUnref<SkShader> fBitmapShader; |
| 71 SkShader::Context* fBitmapShaderContext; |
| 72 void* fBitmapShaderContextStorage; |
| 73 |
| 74 typedef SkShader::Context INHERITED; |
| 75 }; |
| 76 |
75 typedef SkShader INHERITED; | 77 typedef SkShader INHERITED; |
76 }; | 78 }; |
77 | 79 |
78 #endif // SkPictureShader_DEFINED | 80 #endif // SkPictureShader_DEFINED |
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