ash/accelerometer/accelerometer_observer.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 ASH_ACCELEROMETER_ACCELEROMETER_OBSERVER_H_
   6 #define ASH_ACCELEROMETER_ACCELEROMETER_OBSERVER_H_
   7
   8 #include "ash/ash_export.h"
   9
  10 namespace gfx {
  11 class Vector3dF;
  12 }
  13
  14 namespace ash {
  15
  16 // The interface for classes which observe accelerometer updates.
  17 class ASH_EXPORT AccelerometerObserver {
  18  public:
  19   // Invoked when an accelerometer reading has been taken. The |base| and |lid|
  20   // accelerometer readings are in G's.
  21   virtual void OnAccelerometerUpdated(const gfx::Vector3dF& base,
  22                                       const gfx::Vector3dF& lid) = 0;
  23
  24  protected:
  25   virtual ~AccelerometerObserver() {}
  26 };
  27
  28 }  // namespace ash
  29
  30 #endif  // ASH_ACCELEROMETER_ACCELEROMETER_OBSERVER_H_