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
110
111
112
113
114
115
|
/*
* 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 "BlackBerryPlatformMisc.h"
#include "BlackBerryPlatformPrimitives.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace BlackBerry {
namespace Platform {
namespace Graphics {
struct Buffer;
}
}
namespace WebKit {
// Represents a fence that has been inserted into the command stream. You can wait on the corresponding platform sync
// object to make sure that previous commands have been completed.
// There is no reason to wait twice on the same platform sync object, so the only mechanism provided to access the sync
// object will also clear it to prevent anyone from waiting again.
// Fence is only refcounted on the compositing thread, so RefCounted will suffice, we don't need ThreadSafeRefCounted.
class Fence : public RefCounted<Fence> {
public:
static PassRefPtr<Fence> create(void* platformSync = 0)
{
return adoptRef(new Fence(platformSync));
}
// Returns 0 if this fence is stale (someone already waited on it)
// Otherwise returns the platform sync object and clears the sync
// object so no-one waits again.
void* takePlatformSync()
{
void* tmp = m_platformSync;
m_platformSync = 0;
return tmp;
}
~Fence();
private:
Fence(void* platformSync)
: m_platformSync(platformSync)
{
}
void* m_platformSync;
};
class TileBuffer {
public:
TileBuffer(const Platform::IntSize&);
~TileBuffer();
Platform::IntSize size() const;
Platform::IntRect surfaceRect() const;
Platform::IntRect pixelContentsRect() const;
Platform::IntPoint lastRenderOrigin() const { return m_lastRenderOrigin; }
void setLastRenderOrigin(const Platform::IntPoint& origin) { m_lastRenderOrigin = origin; }
double lastRenderScale() const { return m_lastRenderScale; }
void setLastRenderScale(double scale) { m_lastRenderScale = scale; }
bool isRendered(double scale) const;
bool isRendered(const Platform::IntRectRegion& pixelContentsRegion, double scale) 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;
bool wasNativeBufferCreated() const;
bool backgroundPainted() const { return m_backgroundPainted; }
void paintBackground();
Fence* fence() const { return m_fence.get(); }
void setFence(PassRefPtr<Fence> fence) { m_fence = fence; }
private:
Platform::IntPoint m_lastRenderOrigin;
Platform::IntSize m_size;
Platform::IntRectRegion m_renderedRegion;
RefPtr<Fence> m_fence;
mutable Platform::Graphics::Buffer* m_nativeBuffer;
double m_lastRenderScale;
bool m_backgroundPainted;
DISABLE_COPY(TileBuffer)
};
} // namespace WebKit
} // namespace BlackBerry
#endif // BackingStoreTile_h
|
