// Cancel the focus if the half button press is released using the hardware shutter button.
private void OnButtonRelease(object sender, EventArgs e)
{
if (cam != null)
{
cam.CancelFocus();
}
}
private void UninitializeCamera()
{
StopAutofocusTimer();
StopScanning();
if (_phoneCamera != null)
{
// Cleanup
_phoneCamera.Initialized -= CameraInitialized;
CameraButtons.ShutterKeyHalfPressed -= CameraButtons_ShutterKeyHalfPressed;
_phoneCamera.CancelFocus();
_phoneCamera.Dispose();
_phoneCamera = null;
}
if (_autofocusTimer != null)
{
_autofocusTimer = null;
}
if (_scanTimer != null)
{
_scanTimer = null;
}
if (_previewBuffer != null)
{
_previewBuffer = null;
}
if (_barcodeReader != null)
{
_barcodeReader = null;
}
}
protected override void OnNavigatingFrom(System.Windows.Navigation.NavigatingCancelEventArgs e)
{
_cam.CancelFocus();
_cam.Dispose();
base.OnNavigatingFrom(e);
}
protected override void OnNavigatingFrom(System.Windows.Navigation.NavigatingCancelEventArgs e)
{
if (_photoCamera != null)
{
_timer.Stop();
_photoCamera.CancelFocus();
_photoCamera.Dispose();
}
base.OnNavigatingFrom(e);
}
private void _focusButton_Click(object sender, RoutedEventArgs e)
{
if (_photoCamera != null && _photoCamera.IsFocusSupported)
{
try
{
_photoCamera.CancelFocus();
_photoCamera.Focus();
}
catch
{
}
}
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
if ((Application.Current.RootVisual as PhoneApplicationFrame) != null)
{
(Application.Current.RootVisual as PhoneApplicationFrame).RemoveBackEntry();
}
if (_photoCamera != null)
{
_timer.Stop();
_photoCamera.CancelFocus();
_photoCamera.Dispose();
}
}
/// <summary>
/// Cancels the current camera auto focus operation.
/// </summary>
/// <remarks>
/// This method is already protected and only called when the service is currently running.
/// </remarks>
protected override void CancelCameraFocus()
{
_photoCamera.CancelFocus();
}
/// <summary>
/// Cancels the current focus operation.
/// </summary>
public void CancelFocus()
{
_photoCamera.CancelFocus();
}