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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 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 SkComposeShader_DEFINED | 10 #ifndef SkComposeShader_DEFINED |
(...skipping 16 matching lines...) Expand all Loading... |
27 "dst", and the result from shader B as its "src". | 27 "dst", and the result from shader B as its "src". |
28 mode->xfer32(sA_result, sB_result, ...) | 28 mode->xfer32(sA_result, sB_result, ...) |
29 @param shaderA The colors from this shader are seen as the "dst" by the
xfermode | 29 @param shaderA The colors from this shader are seen as the "dst" by the
xfermode |
30 @param shaderB The colors from this shader are seen as the "src" by the
xfermode | 30 @param shaderB The colors from this shader are seen as the "src" by the
xfermode |
31 @param mode The xfermode that combines the colors from the two shade
rs. If mode | 31 @param mode The xfermode that combines the colors from the two shade
rs. If mode |
32 is null, then SRC_OVER is assumed. | 32 is null, then SRC_OVER is assumed. |
33 */ | 33 */ |
34 SkComposeShader(SkShader* sA, SkShader* sB, SkXfermode* mode = NULL); | 34 SkComposeShader(SkShader* sA, SkShader* sB, SkXfermode* mode = NULL); |
35 virtual ~SkComposeShader(); | 35 virtual ~SkComposeShader(); |
36 | 36 |
37 virtual bool setContext(const SkBitmap&, const SkPaint&, | 37 virtual bool validContext(const SkBitmap&, const SkPaint&, |
38 const SkMatrix&) SK_OVERRIDE; | 38 const SkMatrix&, SkMatrix* totalInverse = NULL) co
nst SK_OVERRIDE; |
39 virtual void endContext() SK_OVERRIDE; | 39 virtual SkShader::Context* createContext(const SkBitmap&, const SkPaint&, |
40 virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE; | 40 const SkMatrix&, void*) const SK_OV
ERRIDE; |
| 41 virtual size_t contextSize() const SK_OVERRIDE; |
| 42 |
| 43 class ComposeShaderContext : public SkShader::Context { |
| 44 public: |
| 45 // When this object gets destroyed, it will call contextA and contextB's
destructor |
| 46 // but it will NOT free the memory. |
| 47 ComposeShaderContext(const SkComposeShader&, const SkBitmap&, |
| 48 const SkPaint&, const SkMatrix&, |
| 49 SkShader::Context* contextA, SkShader::Context* con
textB); |
| 50 |
| 51 SkShader::Context* getShaderContextA() const { return fShaderContextA; } |
| 52 SkShader::Context* getShaderContextB() const { return fShaderContextB; } |
| 53 |
| 54 virtual ~ComposeShaderContext(); |
| 55 |
| 56 virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE
; |
| 57 |
| 58 private: |
| 59 SkShader::Context* fShaderContextA; |
| 60 SkShader::Context* fShaderContextB; |
| 61 |
| 62 typedef SkShader::Context INHERITED; |
| 63 }; |
| 64 |
| 65 #ifdef SK_DEBUG |
| 66 SkShader* getShaderA() { return fShaderA; } |
| 67 SkShader* getShaderB() { return fShaderB; } |
| 68 #endif |
41 | 69 |
42 SK_TO_STRING_OVERRIDE() | 70 SK_TO_STRING_OVERRIDE() |
43 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposeShader) | 71 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposeShader) |
44 | 72 |
45 protected: | 73 protected: |
46 SkComposeShader(SkReadBuffer& ); | 74 SkComposeShader(SkReadBuffer& ); |
47 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; | 75 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; |
48 | 76 |
49 private: | 77 private: |
50 | |
51 SkShader* fShaderA; | 78 SkShader* fShaderA; |
52 SkShader* fShaderB; | 79 SkShader* fShaderB; |
53 SkXfermode* fMode; | 80 SkXfermode* fMode; |
54 | 81 |
55 typedef SkShader INHERITED; | 82 typedef SkShader INHERITED; |
56 }; | 83 }; |
57 | 84 |
58 #endif | 85 #endif |
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