2 * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
4 * Licensed under the Apache License, Version 2.0 (the License);
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an AS IS BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 namespace Tizen.Sensor
22 /// Accelerometer Sensor Class. Used for registering callbacks for accelerometer and getting accelerometer data
24 public sealed class Accelerometer : Sensor
26 private static string AccelerometerKey = "http://tizen.org/feature/sensor.accelerometer";
28 /// Gets the X component of the acceleration.
30 /// <since_tizen> 3 </since_tizen>
31 /// <value> X </value>
32 public float X { get; private set; } = float.MinValue;
35 /// Gets the Y component of the acceleration.
37 /// <since_tizen> 3 </since_tizen>
38 /// <value> Y </value>
39 public float Y { get; private set; } = float.MinValue;
42 /// Gets the Z component of the acceleration.
44 /// <since_tizen> 3 </since_tizen>
45 /// <value> Z </value>
46 public float Z { get; private set; } = float.MinValue;
49 /// Returns true or false based on whether accelerometer sensor is supported by device.
51 /// <since_tizen> 3 </since_tizen>
52 /// <value><c>true</c> if supported; otherwise, <c>false</c>.</value>
53 public static bool IsSupported
57 Log.Info(Globals.LogTag, "Checking if the Accelerometer sensor is supported");
58 return CheckIfSupported(SensorType.Accelerometer, AccelerometerKey);
63 /// Returns the number of accelerometer sensors available on the device.
65 /// <since_tizen> 3 </since_tizen>
66 /// <value> The count of accelerometer sensors </value>
67 /// <exception cref="InvalidOperationException">Thrown when the operation is invalid for the current state</exception>
68 public static int Count
72 Log.Info(Globals.LogTag, "Getting the count of accelerometer sensors");
78 /// Initializes a new instance of the <see cref="Tizen.Sensor.Accelerometer"/> class.
80 /// <since_tizen> 3 </since_tizen>
81 /// <feature>http://tizen.org/feature/sensor.accelerometer</feature>
82 /// <exception cref="ArgumentException">Thrown when an invalid argument is used</exception>
83 /// <exception cref="NotSupportedException">Thrown when the sensor is not supported</exception>
84 /// <exception cref="InvalidOperationException">Thrown when the operation is invalid for the current state</exception>
85 /// <param name='index'>
86 /// Index. Default value for this is 0. Index refers to a particular accelerometer sensor in case of multiple sensors
88 public Accelerometer(uint index = 0) : base(index)
90 Log.Info(Globals.LogTag, "Creating Accelerometer object");
93 internal override SensorType GetSensorType()
95 return SensorType.Accelerometer;
99 /// Event Handler for storing the callback functions for event corresponding to change in accelerometer sensor data.
101 /// <since_tizen> 3 </since_tizen>
102 public event EventHandler<AccelerometerDataUpdatedEventArgs> DataUpdated;
104 private static int GetCount()
108 int error = Interop.SensorManager.GetSensorList(SensorType.Accelerometer, out list, out count);
109 if (error != (int)SensorError.None)
111 Log.Error(Globals.LogTag, "Error getting sensor list for accelerometer");
115 Interop.Libc.Free(list);
119 private static Interop.SensorListener.SensorEventCallback _callback;
121 internal override void EventListenStart()
123 _callback = (IntPtr sensorHandle, IntPtr eventPtr, IntPtr data) => {
124 Interop.SensorEventStruct sensorData = Interop.IntPtrToEventStruct(eventPtr);
126 TimeSpan = new TimeSpan((Int64)sensorData.timestamp);
127 X = sensorData.values[0];
128 Y = sensorData.values[1];
129 Z = sensorData.values[2];
131 DataUpdated?.Invoke(this, new AccelerometerDataUpdatedEventArgs(sensorData.values));
134 int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, _callback, IntPtr.Zero);
135 if (error != (int)SensorError.None)
137 Log.Error(Globals.LogTag, "Error setting event callback for accelerometer sensor");
138 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to set event callback for accelerometer");
142 internal override void EventListenStop()
144 int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
145 if (error != (int)SensorError.None)
147 Log.Error(Globals.LogTag, "Error unsetting event callback for accelerometer sensor");
148 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to unset event callback for accelerometer");