| /* |
| * Copyright 2006 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkCoreBlitters_DEFINED |
| #define SkCoreBlitters_DEFINED |
| |
| #include "SkBitmapProcShader.h" |
| #include "SkBlitter.h" |
| #include "SkBlitRow.h" |
| #include "SkShader.h" |
| #include "SkSmallAllocator.h" |
| |
| class SkRasterBlitter : public SkBlitter { |
| public: |
| SkRasterBlitter(const SkBitmap& device) : fDevice(device) {} |
| |
| protected: |
| const SkBitmap& fDevice; |
| |
| private: |
| typedef SkBlitter INHERITED; |
| }; |
| |
| class SkShaderBlitter : public SkRasterBlitter { |
| public: |
| /** |
| * The storage for shaderContext is owned by the caller, but the object itself is not. |
| * The blitter only ensures that the storage always holds a live object, but it may |
| * exchange that object. |
| */ |
| SkShaderBlitter(const SkBitmap& device, const SkPaint& paint, |
| SkShader::Context* shaderContext); |
| virtual ~SkShaderBlitter(); |
| |
| /** |
| * Create a new shader context and uses it instead of the old one if successful. |
| * Will create the context at the same location as the old one (this is safe |
| * because the shader itself is unchanged). |
| */ |
| virtual bool resetShaderContext(const SkShader::ContextRec&) SK_OVERRIDE; |
| |
| virtual SkShader::Context* getShaderContext() const SK_OVERRIDE { return fShaderContext; } |
| |
| protected: |
| uint32_t fShaderFlags; |
| const SkShader* fShader; |
| SkShader::Context* fShaderContext; |
| |
| private: |
| // illegal |
| SkShaderBlitter& operator=(const SkShaderBlitter&); |
| |
| typedef SkRasterBlitter INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class SkA8_Coverage_Blitter : public SkRasterBlitter { |
| public: |
| SkA8_Coverage_Blitter(const SkBitmap& device, const SkPaint& paint); |
| virtual void blitH(int x, int y, int width) SK_OVERRIDE; |
| virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) SK_OVERRIDE; |
| virtual void blitV(int x, int y, int height, SkAlpha alpha) SK_OVERRIDE; |
| virtual void blitRect(int x, int y, int width, int height) SK_OVERRIDE; |
| virtual void blitMask(const SkMask&, const SkIRect&) SK_OVERRIDE; |
| virtual const SkBitmap* justAnOpaqueColor(uint32_t*) SK_OVERRIDE; |
| }; |
| |
| class SkA8_Blitter : public SkRasterBlitter { |
| public: |
| SkA8_Blitter(const SkBitmap& device, const SkPaint& paint); |
| virtual void blitH(int x, int y, int width); |
| virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| virtual void blitV(int x, int y, int height, SkAlpha alpha); |
| virtual void blitRect(int x, int y, int width, int height); |
| virtual void blitMask(const SkMask&, const SkIRect&); |
| virtual const SkBitmap* justAnOpaqueColor(uint32_t*); |
| |
| private: |
| unsigned fSrcA; |
| |
| // illegal |
| SkA8_Blitter& operator=(const SkA8_Blitter&); |
| |
| typedef SkRasterBlitter INHERITED; |
| }; |
| |
| class SkA8_Shader_Blitter : public SkShaderBlitter { |
| public: |
| SkA8_Shader_Blitter(const SkBitmap& device, const SkPaint& paint, |
| SkShader::Context* shaderContext); |
| virtual ~SkA8_Shader_Blitter(); |
| virtual void blitH(int x, int y, int width); |
| virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| virtual void blitMask(const SkMask&, const SkIRect&); |
| |
| private: |
| SkXfermode* fXfermode; |
| SkPMColor* fBuffer; |
| uint8_t* fAAExpand; |
| |
| // illegal |
| SkA8_Shader_Blitter& operator=(const SkA8_Shader_Blitter&); |
| |
| typedef SkShaderBlitter INHERITED; |
| }; |
| |
| //////////////////////////////////////////////////////////////// |
| |
| class SkARGB32_Blitter : public SkRasterBlitter { |
| public: |
| SkARGB32_Blitter(const SkBitmap& device, const SkPaint& paint); |
| virtual void blitH(int x, int y, int width); |
| virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| virtual void blitV(int x, int y, int height, SkAlpha alpha); |
| virtual void blitRect(int x, int y, int width, int height); |
| virtual void blitMask(const SkMask&, const SkIRect&); |
| virtual const SkBitmap* justAnOpaqueColor(uint32_t*); |
| |
| protected: |
| SkColor fColor; |
| SkPMColor fPMColor; |
| SkBlitRow::ColorProc fColor32Proc; |
| SkBlitRow::ColorRectProc fColorRect32Proc; |
| |
| private: |
| unsigned fSrcA, fSrcR, fSrcG, fSrcB; |
| |
| // illegal |
| SkARGB32_Blitter& operator=(const SkARGB32_Blitter&); |
| |
| typedef SkRasterBlitter INHERITED; |
| }; |
| |
| class SkARGB32_Opaque_Blitter : public SkARGB32_Blitter { |
| public: |
| SkARGB32_Opaque_Blitter(const SkBitmap& device, const SkPaint& paint) |
| : INHERITED(device, paint) { SkASSERT(paint.getAlpha() == 0xFF); } |
| virtual void blitMask(const SkMask&, const SkIRect&); |
| |
| private: |
| typedef SkARGB32_Blitter INHERITED; |
| }; |
| |
| class SkARGB32_Black_Blitter : public SkARGB32_Opaque_Blitter { |
| public: |
| SkARGB32_Black_Blitter(const SkBitmap& device, const SkPaint& paint) |
| : INHERITED(device, paint) {} |
| virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| |
| private: |
| typedef SkARGB32_Opaque_Blitter INHERITED; |
| }; |
| |
| class SkARGB32_Shader_Blitter : public SkShaderBlitter { |
| public: |
| SkARGB32_Shader_Blitter(const SkBitmap& device, const SkPaint& paint, |
| SkShader::Context* shaderContext); |
| virtual ~SkARGB32_Shader_Blitter(); |
| virtual void blitH(int x, int y, int width) SK_OVERRIDE; |
| virtual void blitV(int x, int y, int height, SkAlpha alpha) SK_OVERRIDE; |
| virtual void blitRect(int x, int y, int width, int height) SK_OVERRIDE; |
| virtual void blitAntiH(int x, int y, const SkAlpha[], const int16_t[]) SK_OVERRIDE; |
| virtual void blitMask(const SkMask&, const SkIRect&) SK_OVERRIDE; |
| |
| private: |
| SkXfermode* fXfermode; |
| SkPMColor* fBuffer; |
| SkBlitRow::Proc32 fProc32; |
| SkBlitRow::Proc32 fProc32Blend; |
| bool fShadeDirectlyIntoDevice; |
| bool fConstInY; |
| |
| // illegal |
| SkARGB32_Shader_Blitter& operator=(const SkARGB32_Shader_Blitter&); |
| |
| typedef SkShaderBlitter INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| /* These return the correct subclass of blitter for their device config. |
| |
| Currently, they make the following assumptions about the state of the |
| paint: |
| |
| 1. If there is an xfermode, there will also be a shader |
| 2. If there is a colorfilter, there will be a shader that itself handles |
| calling the filter, so the blitter can always ignore the colorfilter obj |
| |
| These pre-conditions must be handled by the caller, in our case |
| SkBlitter::Choose(...) |
| */ |
| |
| SkBlitter* SkBlitter_ChooseD565(const SkBitmap& device, const SkPaint& paint, |
| SkShader::Context* shaderContext, |
| SkTBlitterAllocator* allocator); |
| |
| #endif |