/// <summary>
/// Initializes a new instance of the <see cref="ChooserHandler{TTaskEventArgs}" /> class.
/// </summary>
/// <param name="chooser">The <see cref="ChooserBase{TTaskEventArgs}"/> to show.</param>
/// <param name="resultAction">The <see cref="Action{TTaskEventArgs}"/> to be called once the operation is finished.</param>
public ChooserHandler(ChooserBase <TTaskEventArgs> chooser, Action <TTaskEventArgs> resultAction)
{
_chooser = chooser;
_resultAction = resultAction;
_chooser.Completed += Chooser_Completed;
}
/// <summary>
/// Initializes a new instance of the <see cref="ChooserHandler{TTaskEventArgs}" /> class.
/// </summary>
/// <param name="chooser">The <see cref="ChooserBase{TTaskEventArgs}"/> to show.</param>
public ChooserHandler(ChooserBase <TTaskEventArgs> chooser)
{
_chooser = chooser;
_chooser.Completed += Chooser_Completed;
_taskCompletionSource = new TaskCompletionSource <TTaskEventArgs>();
}
public void ChoosePictureCommon(ChooserBase<PhotoResult> chooser, int maxPixelDimension, int percentQuality, Action<Stream> pictureAvailable, Action assumeCancelled)
{
chooser.Completed += (sender, args) =>
{
if (args.ChosenPhoto != null)
{
ResizeThenCallOnMainThread(maxPixelDimension,
percentQuality,
args.ChosenPhoto,
pictureAvailable);
}
else
assumeCancelled();
};
DoWithInvalidOperationProtection(chooser.Show);
}
public void ChoosePictureCommon(ChooserBase <PhotoResult> chooser, int maxPixelDimension, int percentQuality, Action <Stream> pictureAvailable, Action assumeCancelled)
{
chooser.Completed += (sender, args) =>
{
if (args.ChosenPhoto != null)
{
ResizeThenCallOnMainThread(maxPixelDimension,
percentQuality,
args.ChosenPhoto,
pictureAvailable);
}
else
{
assumeCancelled();
}
};
DoWithInvalidOperationProtection(chooser.Show);
}
public static Task <TTaskEventArgs> ShowAsync <TTaskEventArgs>(this ChooserBase <TTaskEventArgs> chooser)
where TTaskEventArgs : TaskEventArgs
{
var taskCompletionSource = new TaskCompletionSource <TTaskEventArgs>();
EventHandler <TTaskEventArgs> completed = null;
completed = (s, e) =>
{
chooser.Completed -= completed;
taskCompletionSource.SetResult(e);
};
chooser.Completed += completed;
chooser.Show();
return(taskCompletionSource.Task);
}
public void takePicture(string options)
{
try
{
string[] args = JSON.JsonHelper.Deserialize <string[]>(options);
// ["quality", "destinationType", "sourceType", "targetWidth", "targetHeight", "encodingType",
// "mediaType", "allowEdit", "correctOrientation", "saveToPhotoAlbum" ]
cameraOptions = new CameraOptions();
cameraOptions.Quality = int.Parse(args[0]);
cameraOptions.DestinationType = int.Parse(args[1]);
cameraOptions.PictureSourceType = int.Parse(args[2]);
cameraOptions.TargetWidth = int.Parse(args[3]);
cameraOptions.TargetHeight = int.Parse(args[4]);
cameraOptions.EncodingType = int.Parse(args[5]);
cameraOptions.MediaType = int.Parse(args[6]);
cameraOptions.AllowEdit = bool.Parse(args[7]);
cameraOptions.CorrectOrientation = bool.Parse(args[8]);
cameraOptions.SaveToPhotoAlbum = bool.Parse(args[9]);
// a very large number will force the other value to be the bound
if (cameraOptions.TargetWidth > -1 && cameraOptions.TargetHeight == -1)
{
cameraOptions.TargetHeight = 100000;
}
else if (cameraOptions.TargetHeight > -1 && cameraOptions.TargetWidth == -1)
{
cameraOptions.TargetWidth = 100000;
}
}
catch (Exception ex)
{
DispatchCommandResult(new PluginResult(PluginResult.Status.JSON_EXCEPTION, ex.Message));
return;
}
// Api supports FILE_URI, DATA_URL, NATIVE_URI destination types.
// Treat all other destination types as an error.
switch (cameraOptions.DestinationType)
{
case Camera.FILE_URI:
case Camera.DATA_URL:
case Camera.NATIVE_URI:
break;
default:
DispatchCommandResult(new PluginResult(PluginResult.Status.ERROR, "Incorrect option: destinationType"));
return;
}
ChooserBase <PhotoResult> chooserTask = null;
if (cameraOptions.PictureSourceType == CAMERA)
{
chooserTask = new CameraCaptureTask();
}
else if ((cameraOptions.PictureSourceType == PHOTOLIBRARY) || (cameraOptions.PictureSourceType == SAVEDPHOTOALBUM))
{
chooserTask = new PhotoChooserTask();
}
// if chooserTask is still null, then PictureSourceType was invalid
if (chooserTask != null)
{
chooserTask.Completed += onTaskCompleted;
chooserTask.Show();
}
else
{
Debug.WriteLine("Unrecognized PictureSourceType :: " + cameraOptions.PictureSourceType.ToString());
DispatchCommandResult(new PluginResult(PluginResult.Status.NO_RESULT));
}
}
private void DoPhotoTask(ChooserBase<PhotoResult> task)
{
try
{
task.Completed += (t, args) =>
{
if (args.ChosenPhoto != null)
{
ShowDisplay(DisplayState.Processing);
var bitmapImage = new BitmapImage();
bitmapImage.SetSource(args.ChosenPhoto);
var writeableBitmap = new WriteableBitmap(bitmapImage);
ProcessImage(writeableBitmap);
}
else
{
// hope the user doesn't mind being told nothing
}
};
task.Show();
}
catch (Exception exception)
{
// hope the user doesn't mind being told nothing
}
}