internal MediaPickerDelegate (UIViewController viewController, UIImagePickerControllerSourceType sourceType, StoreCameraMediaOptions options)
{
this.viewController = viewController;
this.source = sourceType;
this.options = options ?? new StoreCameraMediaOptions();
if (viewController != null) {
UIDevice.CurrentDevice.BeginGeneratingDeviceOrientationNotifications();
this.observer = NSNotificationCenter.DefaultCenter.AddObserver (UIDevice.OrientationDidChangeNotification, DidRotate);
}
}
/// <summary>
/// Take a photo async with specified options
/// </summary>
/// <param name="options">Camera Media Options</param>
/// <returns>Media file of photo or null if canceled</returns>
public async Task<MediaFile> TakePhotoAsync(StoreCameraMediaOptions options)
{
if (!IsCameraAvailable)
throw new NotSupportedException();
options.VerifyOptions();
var capture = new CameraCaptureUI();
var result = await capture.CaptureFileAsync(CameraCaptureUIMode.Photo, options);
if (result == null)
return null;
StorageFolder folder = ApplicationData.Current.LocalFolder;
string path = options.GetFilePath(folder.Path);
var directoryFull = Path.GetDirectoryName(path);
var newFolder = directoryFull.Replace(folder.Path, string.Empty);
if (!string.IsNullOrWhiteSpace(newFolder))
await folder.CreateFolderAsync(newFolder, CreationCollisionOption.OpenIfExists);
folder = await StorageFolder.GetFolderFromPathAsync(directoryFull);
string filename = Path.GetFileName(path);
var file = await result.CopyAsync(folder, filename, NameCollisionOption.GenerateUniqueName).AsTask();
return new MediaFile(file.Path, () => file.OpenStreamForReadAsync().Result);
}
/// <summary>
/// Take a photo async with specified options
/// </summary>
/// <param name="options">Camera Media Options</param>
/// <returns>Media file of photo or null if canceled</returns>
public Task<MediaFile> TakePhotoAsync(StoreCameraMediaOptions options)
{
if (!IsCameraAvailable)
throw new NotSupportedException();
options.VerifyOptions();
var ntcs = new TaskCompletionSource<MediaFile>(options);
if (Interlocked.CompareExchange(ref completionSource, ntcs, null) != null)
throw new InvalidOperationException("Only one operation can be active at a time");
this.cameraCapture.Show();
return ntcs.Task;
}
private Task<MediaFile> GetMediaAsync(UIImagePickerControllerSourceType sourceType, string mediaType, StoreCameraMediaOptions options = null)
{
UIWindow window = UIApplication.SharedApplication.KeyWindow;
if (window == null)
throw new InvalidOperationException("There's no current active window");
UIViewController viewController = window.RootViewController;
if (viewController == null)
{
window = UIApplication.SharedApplication.Windows.OrderByDescending(w => w.WindowLevel).FirstOrDefault(w => w.RootViewController != null);
if (window == null)
throw new InvalidOperationException("Could not find current view controller");
else
viewController = window.RootViewController;
}
while (viewController.PresentedViewController != null)
viewController = viewController.PresentedViewController;
MediaPickerDelegate ndelegate = new MediaPickerDelegate(viewController, sourceType, options);
var od = Interlocked.CompareExchange(ref this.pickerDelegate, ndelegate, null);
if (od != null)
throw new InvalidOperationException("Only one operation can be active at at time");
var picker = SetupController(ndelegate, sourceType, mediaType, options);
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad && sourceType == UIImagePickerControllerSourceType.PhotoLibrary)
{
ndelegate.Popover = new UIPopoverController(picker);
ndelegate.Popover.Delegate = new MediaPickerPopoverDelegate(ndelegate, picker);
ndelegate.DisplayPopover();
}
else
viewController.PresentViewController(picker, true, null);
return ndelegate.Task.ContinueWith(t =>
{
if (this.popover != null)
{
this.popover.Dispose();
this.popover = null;
}
Interlocked.Exchange(ref this.pickerDelegate, null);
return t;
}).Unwrap();
}
/// <summary>
/// This method takes a picture.
/// Right now the parameter is not evaluated.
/// </summary>
/// <param name="mode"></param>
/// <param name="options"></param>
/// <returns></returns>
public async Task<StorageFile> CaptureFileAsync(CameraCaptureUIMode mode, StoreCameraMediaOptions options)
{
var t = IsStopped();
this.options = options;
// Create new MediaCapture
MyMediaCapture = new MediaCapture();
var videoDevices = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);
var backCamera = videoDevices.FirstOrDefault(
item => item.EnclosureLocation != null
&& item.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Back);
var frontCamera = videoDevices.FirstOrDefault(
item => item.EnclosureLocation != null
&& item.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Front);
var captureSettings = new MediaCaptureInitializationSettings();
if(options.DefaultCamera == CameraDevice.Front && frontCamera != null)
{
captureSettings.VideoDeviceId = frontCamera.Id;
}
else if(options.DefaultCamera == CameraDevice.Rear && backCamera != null)
{
captureSettings.VideoDeviceId = backCamera.Id; ;
}
await MyMediaCapture.InitializeAsync(captureSettings);
// Assign to Xaml CaptureElement.Source and start preview
myCaptureElement.Source = MyMediaCapture;
// show preview
await MyMediaCapture.StartPreviewAsync();
// now wait until stopflag shows that someone took a picture
await t;
// picture has been taken
// stop preview
await CleanUpAsync();
// go back
CurrentWindow.Content = originalFrame;
mainGrid.Children.Remove(this);
return file;
}
private void VerifyCameraOptions(StoreCameraMediaOptions options)
{
VerifyOptions(options);
if (!Enum.IsDefined(typeof(CameraDevice), options.DefaultCamera))
throw new ArgumentException("options.Camera is not a member of CameraDevice");
}
private static MediaPickerController SetupController(MediaPickerDelegate mpDelegate, UIImagePickerControllerSourceType sourceType, string mediaType, StoreCameraMediaOptions options = null)
{
var picker = new MediaPickerController(mpDelegate);
picker.MediaTypes = new[] { mediaType };
picker.SourceType = sourceType;
if (sourceType == UIImagePickerControllerSourceType.Camera)
{
picker.CameraDevice = GetUICameraDevice(options.DefaultCamera);
if (mediaType == TypeImage)
picker.CameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Photo;
else if (mediaType == TypeMovie)
{
StoreVideoOptions voptions = (StoreVideoOptions)options;
picker.CameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Video;
picker.VideoQuality = GetQuailty(voptions.Quality);
picker.VideoMaximumDuration = voptions.DesiredLength.TotalSeconds;
}
}
return picker;
}
/// <summary>
/// Take a photo async with specified options
/// </summary>
/// <param name="options">Camera Media Options</param>
/// <returns>Media file of photo or null if canceled</returns>
public Task<MediaFile> TakePhotoAsync(StoreCameraMediaOptions options)
{
if (!IsTakePhotoSupported)
throw new NotSupportedException();
if (!IsCameraAvailable)
throw new NotSupportedException();
VerifyCameraOptions(options);
return GetMediaAsync(UIImagePickerControllerSourceType.Camera, TypeImage, options);
}
/// <summary>
///
/// </summary>
/// <param name="options"></param>
/// <returns></returns>
public MediaPickerController GetTakePhotoUI(StoreCameraMediaOptions options)
{
if (!IsTakePhotoSupported)
throw new NotSupportedException();
if (!IsCameraAvailable)
throw new NotSupportedException();
VerifyCameraOptions(options);
var d = new MediaPickerDelegate(null, UIImagePickerControllerSourceType.PhotoLibrary, options);
return SetupController(d, UIImagePickerControllerSourceType.Camera, TypeImage, options);
}
public Task<MediaFile> TakePhotoAsync(StoreCameraMediaOptions options)
{
return _media.TakePhotoAsync(options);
}
/// <summary>
///
/// </summary>
/// <param name="options"></param>
/// <returns></returns>
public Intent GetTakePhotoUI (StoreCameraMediaOptions options)
{
if (!IsCameraAvailable)
throw new NotSupportedException();
VerifyOptions (options);
int id = GetRequestId();
return CreateMediaIntent (id, "image/*", MediaStore.ActionImageCapture, options, tasked: false);
}
/// <summary>
/// Take a photo async with specified options
/// </summary>
/// <param name="options">Camera Media Options</param>
/// <returns>Media file of photo or null if canceled</returns>
public Task<Media.Plugin.Abstractions.MediaFile> TakePhotoAsync(StoreCameraMediaOptions options)
{
if (!IsCameraAvailable)
throw new NotSupportedException();
VerifyOptions (options);
return TakeMediaAsync ("image/*", MediaStore.ActionImageCapture, options);
}