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1 // Copyright 2013 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 CONTENT_RENDERER_DEVICE_MOTION_EVENT_PUMP_H_ | |
6 #define CONTENT_RENDERER_DEVICE_MOTION_EVENT_PUMP_H_ | |
7 | |
8 #include "base/memory/scoped_ptr.h" | |
9 #include "content/renderer/device_orientation/device_sensor_event_pump.h" | |
10 #include "content/renderer/shared_memory_seqlock_reader.h" | |
11 #include "third_party/WebKit/public/platform/WebDeviceMotionData.h" | |
12 | |
13 namespace blink { | |
14 class WebDeviceMotionListener; | |
15 } | |
16 | |
17 namespace content { | |
18 | |
19 typedef SharedMemorySeqLockReader<blink::WebDeviceMotionData> | |
20 DeviceMotionSharedMemoryReader; | |
21 | |
22 class CONTENT_EXPORT DeviceMotionEventPump : public DeviceSensorEventPump { | |
23 public: | |
24 DeviceMotionEventPump(); | |
25 explicit DeviceMotionEventPump(int pump_delay_millis); | |
26 virtual ~DeviceMotionEventPump(); | |
27 | |
28 // Sets the listener to receive updates for device motion data at | |
29 // regular intervals. Returns true if the registration was successful. | |
30 bool SetListener(blink::WebDeviceMotionListener* listener); | |
31 | |
32 // RenderProcessObserver implementation. | |
33 virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE; | |
34 | |
35 protected: | |
36 virtual void FireEvent() OVERRIDE; | |
37 virtual bool InitializeReader(base::SharedMemoryHandle handle) OVERRIDE; | |
38 virtual bool SendStartMessage() OVERRIDE; | |
39 virtual bool SendStopMessage() OVERRIDE; | |
40 | |
41 blink::WebDeviceMotionListener* listener_; | |
42 scoped_ptr<DeviceMotionSharedMemoryReader> reader_; | |
43 }; | |
44 | |
45 } // namespace content | |
46 | |
47 #endif // CONTENT_RENDERER_DEVICE_MOTION_EVENT_PUMP_H_ | |
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