/**
* Adds screen edge gestures to a view to present a menu.
*
* - Parameter toView: The view to add gestures to.
* - Parameter forMenu: The menu (left or right) you want to add a gesture for. If unspecified, gestures will be added for both sides.
*
* - Returns: The array of screen edge gestures added to `toView`.
*/
public List <UIScreenEdgePanGestureRecognizer> AddScreenEdgePanGesturesToPresent(UIView toView, UIRectEdge?forMenu = null)
{
var gestures = new List <UIScreenEdgePanGestureRecognizer>();
if (forMenu != UIRectEdge.Right)
{
var leftScreenEdgeGestureRecognizer = new UIScreenEdgePanGestureRecognizer();
leftScreenEdgeGestureRecognizer.AddTarget(/*SideMenuTransition.Current, */ (_) => SideMenuTransition.HandlePresentMenuLeftScreenEdge(leftScreenEdgeGestureRecognizer));
leftScreenEdgeGestureRecognizer.Edges = UIRectEdge.Left;
leftScreenEdgeGestureRecognizer.CancelsTouchesInView = true;
toView.AddGestureRecognizer(leftScreenEdgeGestureRecognizer);
gestures.Add(leftScreenEdgeGestureRecognizer);
}
if (forMenu != UIRectEdge.Left)
{
var rightScreenEdgeGestureRecognizer = new UIScreenEdgePanGestureRecognizer();
rightScreenEdgeGestureRecognizer.AddTarget(/*SideMenuTransition.Current, */ (_) => SideMenuTransition.HandlePresentMenuRightScreenEdge(rightScreenEdgeGestureRecognizer));
rightScreenEdgeGestureRecognizer.Edges = UIRectEdge.Right;
rightScreenEdgeGestureRecognizer.CancelsTouchesInView = true;
toView.AddGestureRecognizer(rightScreenEdgeGestureRecognizer);
gestures.Add(rightScreenEdgeGestureRecognizer);
}
return(gestures);
}
void InteractiveTransitionRecognizerAction(UIScreenEdgePanGestureRecognizer sender)
{
if (sender.State == UIGestureRecognizerState.Began)
{
PerformSegue("BackToFirstViewController", sender);
}
}
void InteractiveTransitionRecognizerAction(UIScreenEdgePanGestureRecognizer sender)
{
if (sender.State == UIGestureRecognizerState.Began)
{
PerformSegue("CustomTransition", sender);
}
}
//https://stackoverflow.com/a/26569703/1981314
void HandleRecognizer(UIScreenEdgePanGestureRecognizer recognizer, UINavigationController navigationController)
{
var translate = recognizer.TranslationInView(recognizer.View);
var percent = translate.X / recognizer.View.Bounds.Width * 2;
var velocity = recognizer.VelocityInView(recognizer.View);
if (percent > 1)
{
percent = 1;
}
if (recognizer.State == UIGestureRecognizerState.Began)
{
interactor = new UIPercentDrivenInteractiveTransition();
navigationController.PopViewController(true);
}
else if (recognizer.State == UIGestureRecognizerState.Changed)
{
interactor.UpdateInteractiveTransition(percent);
}
else if (recognizer.State == UIGestureRecognizerState.Ended)
{
if (percent > 0.5 || velocity.X > 0)
{
interactor.FinishInteractiveTransition();
}
else
{
interactor.CancelInteractiveTransition();
}
interactor = null;
}
}
public SwipeTransitionInteractionController(UIScreenEdgePanGestureRecognizer gestureRecognizer, UIRectEdge edge)
{
GestureRecognizer = gestureRecognizer;
Edge = edge;
GestureRecognizer.AddTarget(() => GestureRecognizeDidUpdate(GestureRecognizer));
}
void Initialize(UITableViewStyle navigationStyle = UITableViewStyle.Plain)
{
navigation = new DialogViewController(navigationStyle, null);
navigation.TableView.AccessibilityIdentifier = "FlyoutMenu";
var navFrame = navigation.View.Frame;
navFrame.Width = menuWidth;
if (Position == FlyOutNavigationPosition.Right)
{
navFrame.X = mainView.Frame.Width - menuWidth;
}
navigation.View.Frame = navFrame;
View.AddSubview(navigation.View);
AddChildViewController(navigation);
TintColor = UIColor.Black;
var version = new System.Version(UIDevice.CurrentDevice.SystemVersion);
isIos8 = version.Major >= 8;
isIos7 = version.Major >= 7;
if (isIos7)
{
navigation.TableView.TableHeaderView =
new UIView(new CGRect(0, 0, 320, 22))
{
BackgroundColor = UIColor.Clear
};
}
navigation.TableView.TableFooterView = new UIView(new CGRect(0, 0, 100, 100))
{
BackgroundColor = UIColor.Clear
};
navigation.TableView.ScrollsToTop = false;
shadowView = new UIView()
{
AccessibilityLabel = "flyOutShadowLayeLabel", IsAccessibilityElement = true
};
shadowView.BackgroundColor = UIColor.Clear;
shadowView.Layer.ShadowOffset = new CGSize(Position == FlyOutNavigationPosition.Left ? -5 : 5, -1);
shadowView.Layer.ShadowColor = UIColor.Black.CGColor;
shadowView.Layer.ShadowOpacity = .75f;
closeButton = new UIButton();
closeButton.AccessibilityHint = closeButton.AccessibilityIdentifier = "CloseMenu";
closeButton.AccessibilityLabel = "Close Menu";
closeButton.TouchUpInside += CloseButtonTapped;
AlwaysShowLandscapeMenu = true;
NavigationOpenedByLandscapeRotation = false;
View.AddGestureRecognizer(openGesture = new UIScreenEdgePanGestureRecognizer(() => DragContentView(openGesture))
{
Edges = Position == FlyOutNavigationPosition.Left ? UIRectEdge.Left : UIRectEdge.Right
});
View.AddGestureRecognizer(closeGesture = new OpenMenuGestureRecognizer(DragContentView, shouldReceiveTouch));
}
void InteractiveTransitionRecognizerAction(UIScreenEdgePanGestureRecognizer sender, bool presentedValue)
{
// If we get swipe from the left edge, we show the menu.
if (sender.State == UIGestureRecognizerState.Began)
{
SetPresentedValue(presentedValue);
}
}
void InteractiveTransitionRecognizerAction(UIScreenEdgePanGestureRecognizer sender, IReadOnlyList <Page> pageStack)
{
var percent = sender.TranslationInView(sender.View).X / sender.View.Frame.Width;
var finishTransitionOnEnd = percent > 0.5 || sender.VelocityInView(sender.View).X > 300;
_renderer.EdgeGesturePanned(new EdgeGesturePannedArgs
{
State = sender.State,
Percent = percent,
FinishTransitionOnEnd = finishTransitionOnEnd
});
switch (sender.State)
{
case UIGestureRecognizerState.Began:
_renderer.PercentDrivenInteractiveTransition = new UIPercentDrivenInteractiveTransition();
((UINavigationController)_renderer).PopViewController(true);
break;
case UIGestureRecognizerState.Changed:
_renderer.PercentDrivenInteractiveTransition.UpdateInteractiveTransition(percent);
break;
case UIGestureRecognizerState.Cancelled:
case UIGestureRecognizerState.Failed:
_renderer.PercentDrivenInteractiveTransition.CancelInteractiveTransition();
_renderer.PercentDrivenInteractiveTransition = null;
break;
case UIGestureRecognizerState.Ended:
if (finishTransitionOnEnd)
{
_renderer.PercentDrivenInteractiveTransition.FinishInteractiveTransition();
/*
* IMPORTANT!
*
* at the end of this transition, we need to check if we want a normal pop gesture or the custom one for the new page
* as we said before, the custom pop gesture doesnt play well with "normal" pages.
* So, at the end of the transition, we check if a page exists before the one we are opening and then check the mapstack
* If the previous page of the pop destination doesnt have shared transitions, we remove our custom gesture
*/
var pageCount = pageStack.Count;
if (pageCount > 2 && _renderer.TransitionMap.GetMap(pageStack[pageCount - 3], null).Count == 0)
{
RemoveInteractiveTransitionRecognizer();
}
}
else
{
_renderer.PercentDrivenInteractiveTransition.CancelInteractiveTransition();
}
_renderer.PercentDrivenInteractiveTransition = null;
break;
}
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
var interactiveTransitionRecognizer = new UIScreenEdgePanGestureRecognizer();
interactiveTransitionRecognizer.AddTarget(() => InteractiveTransitionRecognizerAction(interactiveTransitionRecognizer));
interactiveTransitionRecognizer.Edges = UIRectEdge.Left;
View.AddGestureRecognizer(interactiveTransitionRecognizer);
}
public override void ViewDidLoad ()
{
base.ViewDidLoad ();
View.Apply (Style.Screen);
NavigationBar.Apply (Style.NavigationBar);
Delegate = navDelegate = new NavDelegate ();
InteractivePopGestureRecognizer.ShouldBegin = GestureRecognizerShouldBegin;
interactiveEdgePanGestureRecognizer = new UIScreenEdgePanGestureRecognizer (OnEdgePanGesture) {
Edges = UIRectEdge.Left,
ShouldBegin = GestureRecognizerShouldBegin,
};
View.AddGestureRecognizer (interactiveEdgePanGestureRecognizer);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
View.Apply(Style.Screen);
NavigationBar.Apply(Style.NavigationBar);
Delegate = navDelegate = new NavDelegate();
InteractivePopGestureRecognizer.ShouldBegin = GestureRecognizerShouldBegin;
interactiveEdgePanGestureRecognizer = new UIScreenEdgePanGestureRecognizer(OnEdgePanGesture)
{
Edges = UIRectEdge.Left,
ShouldBegin = GestureRecognizerShouldBegin,
};
View.AddGestureRecognizer(interactiveEdgePanGestureRecognizer);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
// Attach the Edge Gesture.
var edgeSwipeOpenRecognizer = new UIScreenEdgePanGestureRecognizer();
edgeSwipeOpenRecognizer.AddTarget(() => InteractiveTransitionRecognizerAction(edgeSwipeOpenRecognizer, true));
edgeSwipeOpenRecognizer.Edges = UIRectEdge.Left;
View.AddGestureRecognizer(edgeSwipeOpenRecognizer);
var edgeSwipeCloseRecognizer = new UIScreenEdgePanGestureRecognizer();
edgeSwipeCloseRecognizer.AddTarget(() => InteractiveTransitionRecognizerAction(edgeSwipeCloseRecognizer, false));
edgeSwipeCloseRecognizer.Edges = UIRectEdge.Right;
View.AddGestureRecognizer(edgeSwipeCloseRecognizer);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
var screenEdgePanGestureRecognizer = new UIScreenEdgePanGestureRecognizer()
{
Edges = UIRectEdge.Left
};
screenEdgePanGestureRecognizer.AddTarget(() => SlideToOpenMasterViewController(screenEdgePanGestureRecognizer));
View.AddGestureRecognizer(screenEdgePanGestureRecognizer);
if (DetailViewController == null)
{
return;
}
AttachDetaiViewController();
}
nfloat PercentForGesture(UIScreenEdgePanGestureRecognizer gesture)
{
if (TransitionContext == null)
{
return(0f);
}
UIView transitionContainerView = TransitionContext.ContainerView;
var locationInSourceView = gesture.LocationInView(transitionContainerView);
nfloat width = 0f;
nfloat height = 0f;
if (transitionContainerView != null)
{
width = transitionContainerView.Bounds.Width;
height = transitionContainerView.Bounds.Height;
}
if (Edge == UIRectEdge.Right)
{
return((width - locationInSourceView.X) / width);
}
if (Edge == UIRectEdge.Left)
{
return(locationInSourceView.X / width);
}
if (Edge == UIRectEdge.Bottom)
{
return((height - locationInSourceView.Y) / height);
}
if (Edge == UIRectEdge.Top)
{
return(locationInSourceView.Y / height);
}
return(0);
}
void Initialize(UIViewController navigationController = null)
{
NavigationViewController = navigationController ?? new UIViewController();
NavigationViewController.View.AccessibilityIdentifier = "FlyoutMenu";
var navFrame = NavigationViewController.View.Frame;
navFrame.Width = menuWidth;
if (Position == FlyOutNavigationPosition.Right)
{
navFrame.X = mainView.Frame.Width - menuWidth;
}
NavigationViewController.View.Frame = navFrame;
View.AddSubview(NavigationViewController.View);
AddChildViewController(NavigationViewController);
shadowView = new UIView()
{
AccessibilityLabel = "flyOutShadowLayeLabel", IsAccessibilityElement = true
};
shadowView.BackgroundColor = UIColor.Clear;
shadowView.Layer.ShadowOffset = new CGSize(Position == FlyOutNavigationPosition.Left ? -5 : 5, -1);
shadowView.Layer.ShadowColor = UIColor.Black.CGColor;
shadowView.Layer.ShadowOpacity = .75f;
closeButton = new UIButton();
closeButton.AccessibilityHint = closeButton.AccessibilityIdentifier = "CloseMenu";
closeButton.AccessibilityLabel = "Close Menu";
closeButton.TouchUpInside += CloseButtonTapped;
AlwaysShowLandscapeMenu = true;
NavigationOpenedByLandscapeRotation = false;
View.AddGestureRecognizer(openGesture = new UIScreenEdgePanGestureRecognizer(() => DragContentView(openGesture))
{
Edges = Position == FlyOutNavigationPosition.Left ? UIRectEdge.Left : UIRectEdge.Right
});
View.AddGestureRecognizer(closeGesture = new OpenMenuGestureRecognizer(DragContentView, shouldReceiveTouch));
}
public override IUIViewControllerAnimatedTransitioning GetAnimationControllerForOperation(
UINavigationController navigationController, UINavigationControllerOperation operation, UIViewController fromViewController, UIViewController toViewController)
{
//TODO: remove dependency on CitySelectViewController with interface or something else
if (operation == UINavigationControllerOperation.Push && fromViewController is HomePageController vc1)
{
//Recognizer is added only on push so that user can interactively pop the presented screen.
var recognizer = new UIScreenEdgePanGestureRecognizer();
recognizer.Edges = UIRectEdge.Left;
recognizer.AddTarget(() =>
{
HandleRecognizer(recognizer, navigationController);
});
toViewController.View.AddGestureRecognizer(recognizer);
return(new CustomTransition(operation, vc1.AnimationSourceView));
}
else if (operation == UINavigationControllerOperation.Pop && toViewController is HomePageController vc2)
{
return(new CustomTransition(operation, vc2.AnimationSourceView));
}
return(null);
}
void GestureRecognizeDidUpdate(UIScreenEdgePanGestureRecognizer sender)
{
switch (sender.State)
{
case UIGestureRecognizerState.Changed:
UpdateInteractiveTransition(PercentForGesture(sender));
break;
case UIGestureRecognizerState.Ended:
if (PercentForGesture(sender) >= 0.5)
{
FinishInteractiveTransition();
}
else
{
CancelInteractiveTransition();
}
break;
default:
CancelInteractiveTransition();
break;
}
}
public void HandlePresentMenuRightScreenEdge(UIScreenEdgePanGestureRecognizer edge)
{
this.PresentDirection = UIRectEdge.Right;
HandlePresentMenuPan(edge);
}
void Initialize(UITableViewStyle navigationStyle = UITableViewStyle.Plain)
{
navigation = new DialogViewController (navigationStyle, null);
navigation.TableView.AccessibilityIdentifier = "FlyoutMenu";
var navFrame = navigation.View.Frame;
navFrame.Width = menuWidth;
if (Position == FlyOutNavigationPosition.Right)
navFrame.X = mainView.Frame.Width - menuWidth;
navigation.View.Frame = navFrame;
View.AddSubview(navigation.View);
TintColor = UIColor.Black;
var version = new System.Version(UIDevice.CurrentDevice.SystemVersion);
isIos8 = version.Major >= 8;
isIos7 = version.Major >= 7;
if(isIos7){
navigation.TableView.TableHeaderView =
new UIView (new CGRect (0, 0, 320, 22)) {
BackgroundColor = UIColor.Clear
};
}
navigation.TableView.TableFooterView = new UIView(new CGRect(0, 0, 100, 100)) {BackgroundColor = UIColor.Clear};
navigation.TableView.ScrollsToTop = false;
shadowView = new UIView(){AccessibilityLabel = "flyOutShadowLayeLabel" , IsAccessibilityElement = true};
shadowView.BackgroundColor = UIColor.Clear;
shadowView.Layer.ShadowOffset = new CGSize(Position == FlyOutNavigationPosition.Left ? -5 : 5, -1);
shadowView.Layer.ShadowColor = UIColor.Black.CGColor;
shadowView.Layer.ShadowOpacity = .75f;
closeButton = new UIButton ();
closeButton.AccessibilityHint = closeButton.AccessibilityIdentifier ="CloseMenu";
closeButton.AccessibilityLabel = "Close Menu";
closeButton.TouchUpInside += CloseButtonTapped;
AlwaysShowLandscapeMenu = true;
NavigationOpenedByLandscapeRotation = false;
View.AddGestureRecognizer (openGesture = new UIScreenEdgePanGestureRecognizer(() => DragContentView (openGesture)){Edges = Position == FlyOutNavigationPosition.Left ? UIRectEdge.Left : UIRectEdge.Right});
View.AddGestureRecognizer (closeGesture = new OpenMenuGestureRecognizer (DragContentView, shouldReceiveTouch));
}
