1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/*
* 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* 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
|
