public void ShowFromViewController(UIViewController viewController,
JTSImageViewControllerTransition transition)
{
this.Transition = transition;
StartingInfo.StatusBarHiddenPriorToPresentation = UIApplication.SharedApplication.StatusBarHidden;
StartingInfo.StatusBarStylePriorToPresentation = UIApplication.SharedApplication.StatusBarStyle;
if (Mode == JTSImageViewControllerMode.Image) {
if (this.Transition == JTSImageViewControllerTransition.FromOffscreen) {
ShowImageViewerByScalingDownFromOffscreenPositionWithViewController (viewController);
} else {
ShowImageViewerByExpandingFromOriginalPositionFromViewController (viewController);
}
} else if (Mode == JTSImageViewControllerMode.AltText) {
ShowAltTextFromViewController (viewController);
}
}
// Public Methods
public async Task DownloadThenShowFromViewController(
UIViewController viewController,
JTSImageViewControllerTransition transition,
UIView fromView,
CancellationToken cancel,
int progressHeight = 0,
UIActivityIndicatorView spinner = null
)
{
bool newSpinner = false;
if (spinner == null)
{
newSpinner = true;
spinner = new UIActivityIndicatorView (UIActivityIndicatorViewStyle.WhiteLarge)
{ BackgroundColor = UIColor.Black.ColorWithAlpha (.5f) };
spinner.Layer.CornerRadius = 5.0f;
fromView.AddSubview (spinner);
spinner.Frame = new RectangleF(
fromView.Frame.X,
fromView.Frame.Y,
fromView.Frame.Width,
progressHeight == 0 ? fromView.Frame.Height : progressHeight
);
}
spinner.StartAnimating ();
spinner.Hidden = false;
Image = await SetupImageAndDownloadIfNecessary (ImageInfo);
spinner.StopAnimating ();
spinner.Hidden = true;
if (newSpinner)
{
spinner.RemoveFromSuperview ();
}
if (cancel.IsCancellationRequested)
return;
ImageInfo.Image = Image;
ShowFromViewController (viewController, transition);
UpdateInterfaceWithImage (Image);
}
