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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 "SkBlitter.h"
#include "SkPixmap.h"
#include "SkShader.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* ChooseD16(const SkPixmap& source, const SkPaint&, SkArenaAlloc*);
static SkSpriteBlitter* ChooseL32(const SkPixmap& source, const SkPaint&, SkArenaAlloc*);
static SkSpriteBlitter* ChooseS32(const SkPixmap& source, const SkPaint&, SkArenaAlloc*);
static SkSpriteBlitter* ChooseF16(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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