content/renderer/device_sensors/device_motion_event_pump.h

   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 CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_
   6 #define CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "content/renderer/device_sensors/device_sensor_event_pump.h"
  10 #include "content/renderer/shared_memory_seqlock_reader.h"
  11 #include "third_party/WebKit/public/platform/modules/device_orientation/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
  23     : public DeviceSensorEventPump<blink::WebDeviceMotionListener> {
  24  public:
  25   explicit DeviceMotionEventPump(RenderThread* thread);
  26   ~DeviceMotionEventPump() override;
  27
  28   // // PlatformEventObserver.
  29   bool OnControlMessageReceived(const IPC::Message& message) override;
  30   void SendFakeDataForTesting(void* fake_data) override;
  31
  32  protected:
  33   void FireEvent() override;
  34   bool InitializeReader(base::SharedMemoryHandle handle) override;
  35
  36   // PlatformEventObserver.
  37   void SendStartMessage() override;
  38   void SendStopMessage() override;
  39
  40   scoped_ptr<DeviceMotionSharedMemoryReader> reader_;
  41
  42   DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPump);
  43 };
  44
  45 }  // namespace content
  46
  47 #endif  // CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_