ViewControllerContextTransitioning

A set of methods that provide contextual information for transition animations between view controllers.

public protocol ViewControllerContextTransitioning 

Requirements

containerView

The view that acts as the superview for the views involved in the transition.

var containerView: View 

viewController(forKey:​)

Returns a view controller involved in the transition.

func viewController(forKey key: TransitionContextViewControllerKey)
      -> ViewController?

view(forKey:​)

Returns the specified view involved in the transition.

func view(forKey key: TransitionContextViewKey) -> View?

initialFrame(for:​)

Returns the starting frame rectangle for the specified view controller’s view.

func initialFrame(for viewController: ViewController) -> Rect

finalFrame(for:​)

Returns the ending frame rectangle for the specified view controller’s view.

func finalFrame(for viewController: ViewController) -> Rect

isAnimated

A boolean value indicating whether the transition should be animated.

var isAnimated: Bool 

isInteractive

A boolean value indicating whether the transition is currently interactive.

var isInteractive: Bool 

presentationStyle

Returns the presentation style for the view controller transition.

var presentationStyle: ModalPresentationStyle 

completeTransition(_:​)

Notifies the system that the transition animation is done.

func completeTransition(_ didComplete: Bool)

updateInteractiveTransition(_:​)

Updates the completion percentage of the transition.

func updateInteractiveTransition(_ percentComplete: Double)

pauseInteractiveTransition()

Tells the system to pause the animations.

func pauseInteractiveTransition()

finishInteractiveTransition()

Notifies the system that user interactions signaled the completion of the transition.

func finishInteractiveTransition()

cancelInteractiveTransition()

Notifies the system that user interactions canceled the transition.

func cancelInteractiveTransition()

transitionWasCancelled

Returns a boolean value indicating whether the transition was canceled.

var transitionWasCancelled: Bool 

targetTransform

Returns a transform indicating the amount of rotation being applied during the transition.

var targetTransform: AffineTransform