1/*
2 * Copyright 2006 The Android Open Source Project
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkSpriteBlitter_DEFINED
9#define SkSpriteBlitter_DEFINED
10
11#include "include/core/SkPixmap.h"
12#include "include/core/SkShader.h"
13#include "src/core/SkBlitter.h"
14
15class SkPaint;
16
17// SkSpriteBlitter specializes SkBlitter in a way to move large rectangles of pixels around.
18// Because of this use, the main primitive shifts from blitH style things to the more efficient
19// blitRect.
20class SkSpriteBlitter : public SkBlitter {
21public:
22 SkSpriteBlitter(const SkPixmap& source);
23
24 virtual void setup(const SkPixmap& dst, int left, int top, const SkPaint&);
25
26 // blitH, blitAntiH, blitV and blitMask should not be called on an SkSpriteBlitter.
27 void blitH(int x, int y, int width) override;
28 void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) override;
29 void blitV(int x, int y, int height, SkAlpha alpha) override;
30 void blitMask(const SkMask&, const SkIRect& clip) override;
31
32 // A SkSpriteBlitter must implement blitRect.
33 void blitRect(int x, int y, int width, int height) override = 0;
34
35 static SkSpriteBlitter* ChooseL32(const SkPixmap& source, const SkPaint&, SkArenaAlloc*);
36 static SkSpriteBlitter* ChooseL565(const SkPixmap& source, const SkPaint&, SkArenaAlloc*);
37 static SkSpriteBlitter* ChooseLA8(const SkPixmap& source, const SkPaint&, SkArenaAlloc*);
38
39protected:
40 SkPixmap fDst;
41 const SkPixmap fSource;
42 int fLeft, fTop;
43 const SkPaint* fPaint;
44
45private:
46 typedef SkBlitter INHERITED;
47};
48
49#endif
50