// This method is invoked when the application has loaded and is ready to run. In this 
		// method you should instantiate the window, load the UI into it and then make the window
		// visible.
		public override bool FinishedLaunching (UIApplication app, NSDictionary options)
		{
			window = new UIWindow (UIScreen.MainScreen.Bounds);

			// create and initialize a UICollectionViewFlowLayout
			flowLayout = new UICollectionViewFlowLayout (){
				SectionInset = new UIEdgeInsets (25,5,10,5),
				MinimumInteritemSpacing = 5,
				MinimumLineSpacing = 5,
				ItemSize = new CGSize (100, 100)
			};

			circleLayout = new CircleLayout (Monkeys.Instance.Count){
				ItemSize = new CGSize (100, 100)
			};
		
			imagesController = new ImagesCollectionViewController (flowLayout);

			nfloat sf = 0.4f;
			UICollectionViewTransitionLayout trLayout = null;
			UICollectionViewLayout nextLayout;

			pinch = new UIPinchGestureRecognizer (g => {

				var progress = Math.Abs(1.0f -  g.Scale)/sf;

				if(trLayout == null){
					if(imagesController.CollectionView.CollectionViewLayout is CircleLayout)
						nextLayout = flowLayout;
					else
						nextLayout = circleLayout;

					trLayout = imagesController.CollectionView.StartInteractiveTransition (nextLayout, (completed, finished) => {	
						Console.WriteLine ("transition completed");
						trLayout = null;
					});
				}

				trLayout.TransitionProgress = (nfloat)progress;

				imagesController.CollectionView.CollectionViewLayout.InvalidateLayout ();

				if(g.State == UIGestureRecognizerState.Ended){
					if (trLayout.TransitionProgress > 0.5f)
						imagesController.CollectionView.FinishInteractiveTransition ();
					else
						imagesController.CollectionView.CancelInteractiveTransition ();
				}

			});

			imagesController.CollectionView.AddGestureRecognizer (pinch);

			window.RootViewController = imagesController;
			window.MakeKeyAndVisible ();
			
			return true;
		}
Exemplo n.º 2
0
        // This method is invoked when the application has loaded and is ready to run. In this
        // method you should instantiate the window, load the UI into it and then make the window
        // visible.
        public override bool FinishedLaunching(UIApplication app, NSDictionary options)
        {
            window = new UIWindow(UIScreen.MainScreen.Bounds);

            // create and initialize a UICollectionViewFlowLayout
            flowLayout = new UICollectionViewFlowLayout()
            {
                SectionInset            = new UIEdgeInsets(25, 5, 10, 5),
                MinimumInteritemSpacing = 5,
                MinimumLineSpacing      = 5,
                ItemSize = new CGSize(100, 100)
            };

            circleLayout = new CircleLayout(Monkeys.Instance.Count)
            {
                ItemSize = new CGSize(100, 100)
            };

            imagesController = new ImagesCollectionViewController(flowLayout);

            nfloat sf = 0.4f;
            UICollectionViewTransitionLayout trLayout = null;
            UICollectionViewLayout           nextLayout;

            pinch = new UIPinchGestureRecognizer(g => {
                var progress = Math.Abs(1.0f - g.Scale) / sf;

                if (trLayout == null)
                {
                    if (imagesController.CollectionView.CollectionViewLayout is CircleLayout)
                    {
                        nextLayout = flowLayout;
                    }
                    else
                    {
                        nextLayout = circleLayout;
                    }

                    trLayout = imagesController.CollectionView.StartInteractiveTransition(nextLayout, (completed, finished) => {
                        Console.WriteLine("transition completed");
                        trLayout = null;
                    });
                }

                trLayout.TransitionProgress = (nfloat)progress;

                imagesController.CollectionView.CollectionViewLayout.InvalidateLayout();

                if (g.State == UIGestureRecognizerState.Ended)
                {
                    if (trLayout.TransitionProgress > 0.5f)
                    {
                        imagesController.CollectionView.FinishInteractiveTransition();
                    }
                    else
                    {
                        imagesController.CollectionView.CancelInteractiveTransition();
                    }
                }
            });

            imagesController.CollectionView.AddGestureRecognizer(pinch);

            window.RootViewController = imagesController;
            window.MakeKeyAndVisible();

            return(true);
        }