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 /// UltravioletSensor Class. Used for registering callbacks for ultraviolet sensor and getting ultraviolet data
24 public sealed class UltravioletSensor : Sensor
26 private static string UltravioletSensorKey = "http://tizen.org/feature/sensor.ultraviolet";
29 /// Gets the value of the ultraviolet sensor.
31 public float UltravioletIndex { get; private set; } = float.MinValue;
34 /// Returns true or false based on whether ultraviolet sensor is supported by device.
36 public static bool IsSupported
40 Log.Info(Globals.LogTag, "Checking if the UltravioletSensor is supported");
41 return CheckIfSupported(SensorType.UltravioletSensor, UltravioletSensorKey);
46 /// Returns the number of ultraviolet sensors available on the device.
48 public static int Count
52 Log.Info(Globals.LogTag, "Getting the count of ultraviolet sensors");
58 /// Initializes a new instance of the <see cref="Tizen.Sensor.UltravioletSensor"/> class.
60 /// <exception cref="ArgumentException">Thrown when an invalid argument is used</exception>
61 /// <exception cref="NotSupportedException">Thrown when the sensor is not supported</exception>
62 /// <exception cref="InvalidOperationException">Thrown when the operation is invalid for the current state</exception>
63 /// <param name='index'>
64 /// Index. Default value for this is 0. Index refers to a particular ultraviolet sensor in case of multiple sensors
66 public UltravioletSensor(uint index = 0) : base(index)
68 Log.Info(Globals.LogTag, "Creating UltravioletSensor object");
71 internal override SensorType GetSensorType()
73 return SensorType.UltravioletSensor;
77 /// Event Handler for storing the callback functions for event corresponding to change in ultraviolet sensor data.
80 public event EventHandler<UltravioletSensorDataUpdatedEventArgs> DataUpdated;
83 private static int GetCount()
87 int error = Interop.SensorManager.GetSensorList(SensorType.UltravioletSensor, out list, out count);
88 if (error != (int)SensorError.None)
90 Log.Error(Globals.LogTag, "Error getting sensor list for ultraviolet");
94 Interop.Libc.Free(list);
98 private static Interop.SensorListener.SensorEventCallback _callback;
100 internal override void EventListenStart()
102 _callback = (IntPtr sensorHandle, IntPtr eventPtr, IntPtr data) => {
103 Interop.SensorEventStruct sensorData = Interop.IntPtrToEventStruct(eventPtr);
105 TimeSpan = new TimeSpan((Int64)sensorData.timestamp);
106 UltravioletIndex = sensorData.values[0];
108 DataUpdated?.Invoke(this, new UltravioletSensorDataUpdatedEventArgs(sensorData.values[0]));
111 int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, _callback, IntPtr.Zero);
112 if (error != (int)SensorError.None)
114 Log.Error(Globals.LogTag, "Error setting event callback for ultraviolet sensor");
115 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to set event callback for ultraviolet");
119 internal override void EventListenStop()
121 int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
122 if (error != (int)SensorError.None)
124 Log.Error(Globals.LogTag, "Error unsetting event callback for ultraviolet sensor");
125 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to unset event callback for ultraviolet");