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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef ATHENA_SYSTEM_ORIENTATION_CONTROLLER_H_ | |
6 #define ATHENA_SYSTEM_ORIENTATION_CONTROLLER_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "base/memory/ref_counted.h" | |
10 #include "base/memory/scoped_ptr.h" | |
11 #include "base/memory/weak_ptr.h" | |
12 #include "chromeos/accelerometer/accelerometer_reader.h" | |
13 #include "ui/gfx/display.h" | |
14 | |
15 namespace base { | |
16 class TaskRunner; | |
17 } | |
18 | |
19 namespace athena { | |
20 | |
21 // Monitors accelerometers, detecting orientation changes. When a change is | |
22 // detected rotates the root window to match. | |
23 class OrientationController : public chromeos::AccelerometerReader::Observer { | |
24 public: | |
25 OrientationController(); | |
26 ~OrientationController() override; | |
27 | |
28 void InitWith(scoped_refptr<base::TaskRunner> blocking_task_runner); | |
29 void Shutdown(); | |
30 | |
31 // chromeos::AccelerometerReader::Observer: | |
32 void OnAccelerometerUpdated(const ui::AccelerometerUpdate& update) override; | |
33 | |
34 private: | |
35 // The last configured rotation. | |
36 gfx::Display::Rotation current_rotation_; | |
37 | |
38 DISALLOW_COPY_AND_ASSIGN(OrientationController); | |
39 }; | |
40 | |
41 } // namespace athena | |
42 | |
43 #endif // ATHENA_SYSTEM_ORIENTATION_CONTROLLER_H_ | |
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