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
|
// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_
#define ASH_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_
#include "ash/ash_export.h"
#include "ash/display/window_tree_host_manager.h"
#include "ash/public/cpp/tablet_mode_observer.h"
#include "base/compiler_specific.h"
#include "base/memory/weak_ptr.h"
namespace ash {
// DisplayConfigurationObserver observes and saves
// the change of display configurations.
class ASH_EXPORT DisplayConfigurationObserver
: public WindowTreeHostManager::Observer,
public TabletModeObserver {
public:
DisplayConfigurationObserver();
DisplayConfigurationObserver(const DisplayConfigurationObserver&) = delete;
DisplayConfigurationObserver& operator=(const DisplayConfigurationObserver&) =
delete;
~DisplayConfigurationObserver() override;
protected:
// WindowTreeHostManager::Observer:
void OnDisplaysInitialized() override;
void OnDisplayConfigurationChanged() override;
// TabletModeObserver:
void OnTabletModeStarted() override;
void OnTabletModeEnded() override;
private:
void StartMirrorMode();
void EndMirrorMode();
// True if the device was in mirror mode before siwtching to tablet mode.
bool was_in_mirror_mode_ = false;
base::WeakPtrFactory<DisplayConfigurationObserver> weak_ptr_factory_{this};
};
} // namespace ash
#endif // ASH_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_
|
