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
|
/*
Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef UpdateAtlas_h
#define UpdateAtlas_h
#include "AreaAllocator.h"
#include "IntSize.h"
#include "ShareableSurface.h"
#if USE(COORDINATED_GRAPHICS)
namespace WebCore {
class GraphicsContext;
class IntPoint;
}
namespace WebKit {
class UpdateAtlasClient {
public:
virtual void createUpdateAtlas(int atlasID, const ShareableSurface::Handle&) = 0;
virtual void removeUpdateAtlas(int atlasID) = 0;
};
class UpdateAtlas {
WTF_MAKE_NONCOPYABLE(UpdateAtlas);
public:
UpdateAtlas(UpdateAtlasClient*, int dimension, ShareableBitmap::Flags);
~UpdateAtlas();
inline WebCore::IntSize size() const { return m_surface->size(); }
// Returns a null pointer of there is no available buffer.
PassOwnPtr<WebCore::GraphicsContext> beginPaintingOnAvailableBuffer(int& atlasID, const WebCore::IntSize&, WebCore::IntPoint& offset);
void didSwapBuffers();
ShareableBitmap::Flags flags() const { return m_flags; }
void addTimeInactive(double seconds)
{
ASSERT(!isInUse());
m_inactivityInSeconds += seconds;
}
bool isInactive() const
{
const double inactiveSecondsTolerance = 3;
return m_inactivityInSeconds > inactiveSecondsTolerance;
}
bool isInUse() const { return m_areaAllocator; }
private:
void buildLayoutIfNeeded();
private:
UpdateAtlasClient* m_client;
OwnPtr<GeneralAreaAllocator> m_areaAllocator;
ShareableBitmap::Flags m_flags;
RefPtr<ShareableSurface> m_surface;
ShareableSurface::Handle m_handle;
double m_inactivityInSeconds;
int m_ID;
bool m_isVaild;
};
}
#endif
#endif // UpdateAtlas_h
|
