/*
* Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
namespace Tizen.Sensor
{
///
/// The PickUpGestureDetector class is used for registering callbacks for the pick up activity detector and getting the pick up state.
///
/// 3
public sealed class PickUpGestureDetector : Sensor
{
private static string GestureDetectorKey = "http://tizen.org/feature/sensor.gesture_recognition";
///
/// Gets the state of the pick up gesture.
///
/// 3
/// The pick up state.
public DetectorState PickUp { get; private set; } = DetectorState.Unknown;
///
/// Returns true or false based on whether the pick up gesture detector is supported by the device.
///
/// 3
/// true if supported; otherwise false.
public static bool IsSupported
{
get
{
Log.Info(Globals.LogTag, "Checking if the pick up gesture detector is supported");
return CheckIfSupported(SensorType.PickUpGestureDetector, GestureDetectorKey);
}
}
///
/// Returns the number of pick up gesture detectors available on the device.
///
/// 3
/// The count of pick up gesture detectors.
public static int Count
{
get
{
Log.Info(Globals.LogTag, "Getting the count of pick up gesture detectors");
return GetCount();
}
}
///
/// Initializes a new instance of the class.
///
/// 3
/// http://tizen.org/feature/sensor.gesture_recognition
/// Thrown when an invalid argument is used.
/// Thrown when the sensor is not supported.
/// Thrown when the operation is invalid for the current state.
///
/// Index. Default value for this is 0. Index refers to a particular pick up gesture detector in case of multiple sensors.
///
public PickUpGestureDetector(uint index = 0) : base(index)
{
Log.Info(Globals.LogTag, "Creating pick up gesture detector object");
}
internal override SensorType GetSensorType()
{
return SensorType.PickUpGestureDetector;
}
private static bool CheckIfSupported()
{
bool isSupported;
int error = Interop.SensorManager.SensorIsSupported(SensorType.PickUpGestureDetector, out isSupported);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error checking if pick up gesture detector is supported");
isSupported = false;
}
return isSupported;
}
private static int GetCount()
{
IntPtr list;
int count;
int error = Interop.SensorManager.GetSensorList(SensorType.PickUpGestureDetector, out list, out count);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error getting sensor list for pick up gesture detector");
count = 0;
}
else
Interop.Libc.Free(list);
return count;
}
///
/// Read pick up gesture detector data synchronously.
///
internal override void ReadData()
{
Interop.SensorEventStruct sensorData;
int error = Interop.SensorListener.ReadData(ListenerHandle, out sensorData);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error reading pick up gesture detector data");
throw SensorErrorFactory.CheckAndThrowException(error, "Reading pick up gesture detector data failed");
}
Timestamp = sensorData.timestamp;
PickUp = (DetectorState)sensorData.values[0];
}
///
/// An event handler for storing the callback functions for the event corresponding to the change in the pick up gesture detector data.
///
/// 3
public event EventHandler DataUpdated;
private static Interop.SensorListener.SensorEventsCallback _callback;
internal override void EventListenStart()
{
_callback = (IntPtr sensorHandle, IntPtr eventPtr, uint events_count, IntPtr data) => {
updateBatchEvents(eventPtr, events_count);
Interop.SensorEventStruct sensorData = latestEvent();
Timestamp = sensorData.timestamp;
PickUp = (DetectorState) sensorData.values[0];
DataUpdated?.Invoke(this, new PickUpGestureDetectorDataUpdatedEventArgs(sensorData.values[0]));
};
int error = Interop.SensorListener.SetEventsCallback(ListenerHandle, _callback, IntPtr.Zero);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error setting event callback for pick up gesture detector");
throw SensorErrorFactory.CheckAndThrowException(error, "Unable to set event callback for pick up gesture detector");
}
}
internal override void EventListenStop()
{
int error = Interop.SensorListener.UnsetEventsCallback(ListenerHandle);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error unsetting event callback for pick up gesture detector");
throw SensorErrorFactory.CheckAndThrowException(error, "Unable to unset event callback for pick up gesture detector");
}
}
}
}