/// <summary>
/// Create flash configuration
/// </summary>
/// <param name="torch"><see cref="bool"/></param>
protected void FlashConfiguration(bool torch)
{
try
{
if (Device == null)
{
return;
}
NSError error;
if (Device.LockForConfiguration(out error))
{
if (!torch && Device.HasFlash)
{
Device.FlashMode = AVCaptureFlashMode.Off;
FlashButton.SetImage(FlashOffImage, UIControlState.Normal);
}
else if (torch && Device.HasTorch)
{
Device.TorchMode = AVCaptureTorchMode.Off;
FlashButton.SetImage(FlashOffImage, UIControlState.Normal);
}
Device.UnlockForConfiguration();
}
}
catch { /* ignore */ }
}
/// <summary>
/// Set up images for buttons and set up gesture recognizers
/// </summary>
protected void Initialize()
{
if (Session != null)
{
return;
}
FlashOnImage = Configuration.FlashOnImage ?? UIImage.FromBundle("ic_flash_on");
FlashOffImage = Configuration.FlashOffImage ?? UIImage.FromBundle("ic_flash_off");
var flipImage = Configuration.FlipImage ?? UIImage.FromBundle("ic_loop");
if (Configuration.TintIcons)
{
FlashButton.TintColor = Configuration.TintColor;
FlipButton.TintColor = Configuration.TintColor;
FlashOnImage = FlashOnImage?.ImageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate);
FlashOffImage = FlashOffImage?.ImageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate);
flipImage = flipImage?.ImageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate);
}
FlashButton.SetImage(FlashOffImage, UIControlState.Normal);
FlipButton.SetImage(flipImage, UIControlState.Normal);
FocusView = new UIView(new CGRect(0, 0, 90, 90));
var tapRecognizer = new UITapGestureRecognizer(Focus);
PreviewContainer.AddGestureRecognizer(tapRecognizer);
Hidden = false;
}
void ReleaseDesignerOutlets()
{
if (CamView != null)
{
CamView.Dispose();
CamView = null;
}
if (FlashButton != null)
{
FlashButton.Dispose();
FlashButton = null;
}
if (FlashImageView != null)
{
FlashImageView.Dispose();
FlashImageView = null;
}
if (Label != null)
{
Label.Dispose();
Label = null;
}
if (LabelForDocArea != null)
{
LabelForDocArea.Dispose();
LabelForDocArea = null;
}
if (LabelForDocDistortion != null)
{
LabelForDocDistortion.Dispose();
LabelForDocDistortion = null;
}
if (OverlayView != null)
{
OverlayView.Dispose();
OverlayView = null;
}
if (ProgressView != null)
{
ProgressView.Dispose();
ProgressView = null;
}
}
/// <summary>
/// Toggle the flash or torch
/// </summary>
/// <param name="torch"><see cref="bool"/> indicating whether to use torch for video</param>
protected void Flash(bool torch)
{
if (!CameraAvailable)
{
return;
}
try
{
NSError error;
if (Device.LockForConfiguration(out error))
{
if (torch && Device.HasTorch)
{
var mode = Device.TorchMode;
if (mode == AVCaptureTorchMode.Off)
{
Device.TorchMode = AVCaptureTorchMode.On;
FlashButton.SetImage(FlashOnImage, UIControlState.Normal);
}
else
{
Device.TorchMode = AVCaptureTorchMode.Off;
FlashButton.SetImage(FlashOffImage, UIControlState.Normal);
}
}
else if (!torch && Device.HasFlash)
{
var mode = Device.FlashMode;
if (mode == AVCaptureFlashMode.Off)
{
Device.FlashMode = AVCaptureFlashMode.On;
FlashButton.SetImage(FlashOnImage, UIControlState.Normal);
}
else
{
Device.FlashMode = AVCaptureFlashMode.Off;
FlashButton.SetImage(FlashOffImage, UIControlState.Normal);
}
}
Device.UnlockForConfiguration();
}
}
catch
{
FlashButton.SetImage(FlashOffImage, UIControlState.Normal);
}
}
