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- /*
- * 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 SkSpriteBlitter_DEFINED
- #define SkSpriteBlitter_DEFINED
- #include "include/core/SkPixmap.h"
- #include "include/core/SkShader.h"
- #include "src/core/SkBlitter.h"
- class SkPaint;
- // SkSpriteBlitter specializes SkBlitter in a way to move large rectangles of pixels around.
- // Because of this use, the main primitive shifts from blitH style things to the more efficient
- // blitRect.
- class SkSpriteBlitter : public SkBlitter {
- public:
- SkSpriteBlitter(const SkPixmap& source);
- virtual void setup(const SkPixmap& dst, int left, int top, const SkPaint&);
- // blitH, blitAntiH, blitV and blitMask should not be called on an SkSpriteBlitter.
- void blitH(int x, int y, int width) override;
- void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) override;
- void blitV(int x, int y, int height, SkAlpha alpha) override;
- void blitMask(const SkMask&, const SkIRect& clip) override;
- // A SkSpriteBlitter must implement blitRect.
- void blitRect(int x, int y, int width, int height) override = 0;
- static SkSpriteBlitter* ChooseL32(const SkPixmap& source, const SkPaint&, SkArenaAlloc*);
- static SkSpriteBlitter* ChooseL565(const SkPixmap& source, const SkPaint&, SkArenaAlloc*);
- static SkSpriteBlitter* ChooseLA8(const SkPixmap& source, const SkPaint&, SkArenaAlloc*);
- protected:
- SkPixmap fDst;
- const SkPixmap fSource;
- int fLeft, fTop;
- const SkPaint* fPaint;
- private:
- typedef SkBlitter INHERITED;
- };
- #endif
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