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comparison: gfx/skia/trunk/include/core/SkComposeShader.h
gfx/skia/trunk/include/core/SkComposeShader.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:2360db112d3d |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2006 The Android Open Source Project | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #ifndef SkComposeShader_DEFINED | |
| 11 #define SkComposeShader_DEFINED | |
| 12 | |
| 13 #include "SkShader.h" | |
| 14 | |
| 15 class SkXfermode; | |
| 16 | |
| 17 /////////////////////////////////////////////////////////////////////////////////////////// | |
| 18 | |
| 19 /** \class SkComposeShader | |
| 20 This subclass of shader returns the coposition of two other shaders, combined by | |
| 21 a xfermode. | |
| 22 */ | |
| 23 class SK_API SkComposeShader : public SkShader { | |
| 24 public: | |
| 25 /** Create a new compose shader, given shaders A, B, and a combining xfermode mode. | |
| 26 When the xfermode is called, it will be given the result from shader A as its | |
| 27 "dst", and the result of from shader B as its "src". | |
| 28 mode->xfer32(sA_result, sB_result, ...) | |
| 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 | |
| 31 @param mode The xfermode that combines the colors from the two shaders. If mode | |
| 32 is null, then SRC_OVER is assumed. | |
| 33 */ | |
| 34 SkComposeShader(SkShader* sA, SkShader* sB, SkXfermode* mode = NULL); | |
| 35 virtual ~SkComposeShader(); | |
| 36 | |
| 37 virtual bool setContext(const SkBitmap&, const SkPaint&, | |
| 38 const SkMatrix&) SK_OVERRIDE; | |
| 39 virtual void endContext() SK_OVERRIDE; | |
| 40 virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE; | |
| 41 | |
| 42 SK_TO_STRING_OVERRIDE() | |
| 43 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposeShader) | |
| 44 | |
| 45 protected: | |
| 46 SkComposeShader(SkReadBuffer& ); | |
| 47 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; | |
| 48 | |
| 49 private: | |
| 50 | |
| 51 SkShader* fShaderA; | |
| 52 SkShader* fShaderB; | |
| 53 SkXfermode* fMode; | |
| 54 | |
| 55 typedef SkShader INHERITED; | |
| 56 }; | |
| 57 | |
| 58 #endif |
