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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 |
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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 validContext(const SkBitmap&, const SkPaint&, | 37 virtual bool validContext(const ContextRec&, SkMatrix* totalInverse = NULL)
const SK_OVERRIDE; |
38 const SkMatrix&, SkMatrix* totalInverse = NULL) co
nst SK_OVERRIDE; | 38 virtual SkShader::Context* createContext(const ContextRec&, void*) const SK_
OVERRIDE; |
39 virtual SkShader::Context* createContext(const SkBitmap&, const SkPaint&, | |
40 const SkMatrix&, void*) const SK_OV
ERRIDE; | |
41 virtual size_t contextSize() const SK_OVERRIDE; | 39 virtual size_t contextSize() const SK_OVERRIDE; |
42 | 40 |
43 class ComposeShaderContext : public SkShader::Context { | 41 class ComposeShaderContext : public SkShader::Context { |
44 public: | 42 public: |
45 // When this object gets destroyed, it will call contextA and contextB's
destructor | 43 // When this object gets destroyed, it will call contextA and contextB's
destructor |
46 // but it will NOT free the memory. | 44 // but it will NOT free the memory. |
47 ComposeShaderContext(const SkComposeShader&, const SkBitmap&, | 45 ComposeShaderContext(const SkComposeShader&, const ContextRec&, |
48 const SkPaint&, const SkMatrix&, | |
49 SkShader::Context* contextA, SkShader::Context* con
textB); | 46 SkShader::Context* contextA, SkShader::Context* con
textB); |
50 | 47 |
51 SkShader::Context* getShaderContextA() const { return fShaderContextA; } | 48 SkShader::Context* getShaderContextA() const { return fShaderContextA; } |
52 SkShader::Context* getShaderContextB() const { return fShaderContextB; } | 49 SkShader::Context* getShaderContextB() const { return fShaderContextB; } |
53 | 50 |
54 virtual ~ComposeShaderContext(); | 51 virtual ~ComposeShaderContext(); |
55 | 52 |
56 virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE
; | 53 virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE
; |
57 | 54 |
58 private: | 55 private: |
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76 | 73 |
77 private: | 74 private: |
78 SkShader* fShaderA; | 75 SkShader* fShaderA; |
79 SkShader* fShaderB; | 76 SkShader* fShaderB; |
80 SkXfermode* fMode; | 77 SkXfermode* fMode; |
81 | 78 |
82 typedef SkShader INHERITED; | 79 typedef SkShader INHERITED; |
83 }; | 80 }; |
84 | 81 |
85 #endif | 82 #endif |
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