| |
| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkPictureShader_DEFINED |
| #define SkPictureShader_DEFINED |
| |
| #include "SkShader.h" |
| |
| class SkBitmap; |
| class SkPicture; |
| |
| /* |
| * An SkPictureShader can be used to draw SkPicture-based patterns. |
| * |
| * The SkPicture is first rendered into a tile, which is then used to shade the area according |
| * to specified tiling rules. |
| */ |
| class SkPictureShader : public SkShader { |
| public: |
| static SkShader* Create(const SkPicture*, TileMode, TileMode, const SkMatrix*, |
| const SkRect*); |
| |
| size_t contextSize() const override; |
| |
| SK_TO_STRING_OVERRIDE() |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPictureShader) |
| |
| #if SK_SUPPORT_GPU |
| const GrFragmentProcessor* asFragmentProcessor(GrContext*, |
| const SkMatrix& viewM, |
| const SkMatrix*, |
| SkFilterQuality) const override; |
| #endif |
| |
| protected: |
| SkPictureShader(SkReadBuffer&); |
| void flatten(SkWriteBuffer&) const override; |
| Context* onCreateContext(const ContextRec&, void* storage) const override; |
| |
| private: |
| SkPictureShader(const SkPicture*, TileMode, TileMode, const SkMatrix*, const SkRect*); |
| |
| SkShader* refBitmapShader(const SkMatrix&, const SkMatrix* localMatrix, const int maxTextureSize = 0) const; |
| |
| SkAutoTUnref<const SkPicture> fPicture; |
| SkRect fTile; |
| TileMode fTmx, fTmy; |
| |
| class PictureShaderContext : public SkShader::Context { |
| public: |
| static Context* Create(void* storage, const SkPictureShader&, const ContextRec&, |
| SkShader* bitmapShader); |
| |
| virtual ~PictureShaderContext(); |
| |
| uint32_t getFlags() const override; |
| |
| ShadeProc asAShadeProc(void** ctx) override; |
| void shadeSpan(int x, int y, SkPMColor dstC[], int count) override; |
| |
| private: |
| PictureShaderContext(const SkPictureShader&, const ContextRec&, SkShader* bitmapShader); |
| |
| SkAutoTUnref<SkShader> fBitmapShader; |
| SkShader::Context* fBitmapShaderContext; |
| void* fBitmapShaderContextStorage; |
| |
| typedef SkShader::Context INHERITED; |
| }; |
| |
| typedef SkShader INHERITED; |
| }; |
| |
| #endif // SkPictureShader_DEFINED |