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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* Copyright (C) 2009, 2010, 2011, 2012 Research In Motion Limited. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef BackingStoreTile_h
#define BackingStoreTile_h
#include "BlackBerryPlatformIntRectRegion.h"
#include "BlackBerryPlatformPrimitives.h"
namespace BlackBerry {
namespace Platform {
namespace Graphics {
struct Buffer;
}
}
namespace WebKit {
class TileBuffer {
public:
TileBuffer(const Platform::IntSize&);
~TileBuffer();
Platform::IntSize size() const;
Platform::IntRect rect() const;
bool isRendered() const;
bool isRendered(const Platform::IntRectRegion& contents) const;
void clearRenderedRegion();
void clearRenderedRegion(const Platform::IntRectRegion&);
void addRenderedRegion(const Platform::IntRectRegion&);
Platform::IntRectRegion renderedRegion() const;
Platform::IntRectRegion notRenderedRegion() const;
Platform::Graphics::Buffer* nativeBuffer() const;
void* syncObject() const { return m_syncObject; }
void setSyncObject(void* syncObject) { m_syncObject = syncObject; }
private:
Platform::IntSize m_size;
Platform::IntRectRegion m_renderedRegion;
void* m_syncObject;
mutable Platform::Graphics::Buffer* m_buffer;
};
class BackingStoreTile {
public:
enum BufferingMode { SingleBuffered, DoubleBuffered };
static BackingStoreTile* create(const Platform::IntSize& size, BufferingMode mode)
{
return new BackingStoreTile(size, mode);
}
~BackingStoreTile();
Platform::IntSize size() const;
Platform::IntRect rect() const;
TileBuffer* frontBuffer() const;
TileBuffer* backBuffer() const;
bool isDoubleBuffered() const { return m_bufferingMode == DoubleBuffered; }
void reset();
bool backgroundPainted() const { return m_backgroundPainted; }
void paintBackground();
bool isCommitted() const { return m_committed; }
void setCommitted(bool committed) { m_committed = committed; }
void clearShift() { m_horizontalShift = 0; m_verticalShift = 0; }
int horizontalShift() const { return m_horizontalShift; }
void setHorizontalShift(int shift) { m_horizontalShift = shift; }
int verticalShift() const { return m_verticalShift; }
void setVerticalShift(int shift) { m_verticalShift = shift; }
void swapBuffers();
private:
BackingStoreTile(const Platform::IntSize&, BufferingMode);
mutable TileBuffer* m_frontBuffer;
BufferingMode m_bufferingMode;
bool m_checkered;
bool m_committed;
bool m_backgroundPainted;
int m_horizontalShift;
int m_verticalShift;
};
} // namespace WebKit
} // namespace BlackBerry
#endif // BackingStoreTile_h
|
