private void DeviceRemoved(GazeDeviceWatcherPreview source,
GazeDeviceWatcherRemovedPreviewEventArgs args)
{
// Decrement gaze device counter and remove event handlers
if (IsSupportedDevice(args.Device))
{
_deviceCounter--;
if (_deviceCounter == 0)
{
_gazeInputSource.GazeEntered -= GazeEntered;
_gazeInputSource.GazeMoved -= GazeTrackerMoved;
_gazeInputSource.GazeExited -= GazeExited;
}
}
}
/// <summary>
/// Handles disconnection of eye-tracking devices.
/// </summary>
/// <param name="sender">Source of the device removed event</param>
/// <param name="e">Event args for the device removed event</param>
private void DeviceRemoved(GazeDeviceWatcherPreview source,
GazeDeviceWatcherRemovedPreviewEventArgs args)
{
// Decrement gaze device counter and remove event handlers.
if (IsSupportedDevice(args.Device))
{
deviceCounter--;
TrackerCounter.Text = deviceCounter.ToString();
if (deviceCounter == 0)
{
gazeInputSource.GazeEntered -= this.GazeEntered;
gazeInputSource.GazeMoved -= this.GazeMoved;
gazeInputSource.GazeExited -= this.GazeExited;
}
}
}
private void OnDeviceRemoved(GazeDeviceWatcherPreview sender, GazeDeviceWatcherRemovedPreviewEventArgs args)
{
var index = 0;
while (index < _devices.Count && _devices.ElementAt(index).Id != args.Device.Id)
{
index++;
}
if (index < _devices.Count)
{
_devices.RemoveAt(index);
}
else
{
_devices.RemoveAt(0);
}
if (_devices.Count == 0)
{
IsDeviceAvailableChanged?.Invoke(null, null);
}
}
private void OnDeviceRemoved(GazeDeviceWatcherPreview sender, GazeDeviceWatcherRemovedPreviewEventArgs args)
{
_deviceCount--;
Log($"Device removed, count={_deviceCount}", args.Device);
}