ios-samples/MonoCatalogSample/transition.cs

//
// Port of the transition sample
//
using MonoTouch.Foundation;
using MonoTouch.UIKit;
using System;
using System.Drawing;

public partial class TransitionViewController : UIViewController {

	public TransitionViewController () : base ("TransitionViewController", null) {}
	
	const float kImageHeight = 200f;
	const float kImageWidth = 250f;
	const float kTransitionDuration = 0.75f;
	const float kTopPlacement = 80f;

	UIImageView mainView, flipToView;
	UIView containerView;
	
	public override void ViewDidLoad ()
	{
		Title = "Transition";

		containerView = new UIView (new RectangleF ((View.Bounds.Width - kImageWidth)/2.0f, kTopPlacement, kImageWidth, kImageHeight));
		View.AddSubview (containerView);

		mainView = new UIImageView (new RectangleF (0, 0, kImageWidth, kImageHeight)){
			Image = UIImage.FromFile ("scene1.jpg")
		};					
		containerView.AddSubview (mainView);

		flipToView = new UIImageView (new RectangleF (0, 0, kImageWidth, kImageHeight)){
			Image = UIImage.FromFile ("scene2.jpg")				
		};
	}

	partial void flipAction (UIBarButtonItem sender)
	{
		UIView.BeginAnimations (null, IntPtr.Zero);
		UIView.SetAnimationDuration (kTransitionDuration);
		UIView.SetAnimationTransition (
			mainView.Superview != null ? UIViewAnimationTransition.FlipFromLeft : UIViewAnimationTransition.FlipFromRight,
			containerView, true);

		if (flipToView.Superview == null){
			mainView.RemoveFromSuperview ();
			containerView.AddSubview (flipToView);
		} else {
			flipToView.RemoveFromSuperview ();
			containerView.AddSubview (mainView);
		}
		UIView.CommitAnimations ();
	}
	
	partial void curlAction (UIBarButtonItem sender)
	{
		UIView.BeginAnimations (null, IntPtr.Zero);
		UIView.SetAnimationDuration (kTransitionDuration);
		UIView.SetAnimationTransition (
			mainView.Superview != null ? UIViewAnimationTransition.CurlUp : UIViewAnimationTransition.CurlDown,
			containerView, true);

		if (flipToView.Superview == null){
			mainView.RemoveFromSuperview ();
			containerView.AddSubview (flipToView);
		} else {
			flipToView.RemoveFromSuperview ();
			containerView.AddSubview (mainView);
		}
		UIView.CommitAnimations ();
	}

	public override void ViewWillDisappear (bool animated)
	{
		NavigationController.NavigationBar.BarStyle = UIBarStyle.Default;
		UIApplication.SharedApplication.StatusBarStyle = UIStatusBarStyle.Default;
	}

	public override void ViewWillAppear (bool animated)
	{
		NavigationController.NavigationBar.BarStyle = UIBarStyle.Black;
		UIApplication.SharedApplication.StatusBarStyle = UIStatusBarStyle.BlackOpaque;
	}
}