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
|
/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LayerChangesFlusher_h
#define LayerChangesFlusher_h
#if USE(ACCELERATED_COMPOSITING)
#include <windows.h>
#include <wtf/HashSet.h>
#include <wtf/Noncopyable.h>
namespace WebCore {
class CACFLayerTreeHost;
class LayerChangesFlusher {
WTF_MAKE_NONCOPYABLE(LayerChangesFlusher);
public:
static LayerChangesFlusher& shared();
void flushPendingLayerChangesSoon(CACFLayerTreeHost*);
void cancelPendingFlush(CACFLayerTreeHost*);
private:
LayerChangesFlusher();
~LayerChangesFlusher();
static LRESULT CALLBACK hookCallback(int code, WPARAM, LPARAM);
LRESULT hookFired(int code, WPARAM, LPARAM);
void setHook();
void removeHook();
HashSet<CACFLayerTreeHost*> m_hostsWithChangesToFlush;
HHOOK m_hook;
bool m_isCallingHosts;
};
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
#endif // LayerChangesFlusher_h
|
