/* * 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 "include/core/SkTileMode.h" #include "src/shaders/SkShaderBase.h" #include class SkArenaAlloc; 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 SkShaderBase { public: ~SkPictureShader() override; static sk_sp Make(sk_sp, SkTileMode, SkTileMode, const SkMatrix*, const SkRect*); #if SK_SUPPORT_GPU std::unique_ptr asFragmentProcessor(const GrFPArgs&) const override; #endif SkPicture* isAPicture(SkMatrix*, SkTileMode[2], SkRect* tile) const override; protected: SkPictureShader(SkReadBuffer&); void flatten(SkWriteBuffer&) const override; bool onAppendStages(const SkStageRec&) const override; #ifdef SK_ENABLE_LEGACY_SHADERCONTEXT Context* onMakeContext(const ContextRec&, SkArenaAlloc*) const override; #endif private: SK_FLATTENABLE_HOOKS(SkPictureShader) SkPictureShader(sk_sp, SkTileMode, SkTileMode, const SkMatrix*, const SkRect*); sk_sp refBitmapShader(const SkMatrix&, SkTCopyOnFirstWrite* localMatrix, SkColorType dstColorType, SkColorSpace* dstColorSpace, const int maxTextureSize = 0) const; class PictureShaderContext : public Context { public: PictureShaderContext( const SkPictureShader&, const ContextRec&, sk_sp bitmapShader, SkArenaAlloc*); uint32_t getFlags() const override; void shadeSpan(int x, int y, SkPMColor dstC[], int count) override; sk_sp fBitmapShader; SkShaderBase::Context* fBitmapShaderContext; void* fBitmapShaderContextStorage; typedef Context INHERITED; }; sk_sp fPicture; SkRect fTile; SkTileMode fTmx, fTmy; const uint32_t fUniqueID; mutable std::atomic fAddedToCache; typedef SkShaderBase INHERITED; }; #endif // SkPictureShader_DEFINED