Created
May 18, 2020 08:49
-
-
Save pjechris/a3389a10cdbab3f1f1417b5ae8866863 to your computer and use it in GitHub Desktop.
Dimming controller
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/// Dimming presenter | |
/// Code is mostly coming from apple doc: https://developer.apple.com/documentation/uikit/uipresentationcontroller | |
class DimmingPresentationController: UIPresentationController { | |
private let backgroundColor: UIColor | |
private lazy var dimmingView: UIView = { | |
let view = UIView() | |
view.backgroundColor = backgroundColor | |
view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(onTapped))) | |
return view | |
}() | |
init(presentedViewController: UIViewController, | |
presenting presentingViewController: UIViewController?, | |
backgroundColor: UIColor) { | |
self.backgroundColor = backgroundColor | |
super.init(presentedViewController: presentedViewController, presenting: presentingViewController) | |
} | |
override open func presentationTransitionWillBegin() { | |
let transitionCoordinator = presentingViewController.transitionCoordinator | |
super.presentationTransitionWillBegin() | |
guard let containerView = containerView else { | |
return | |
} | |
dimmingView.frame = containerView.bounds | |
dimmingView.alpha = 0 | |
containerView.addSubview(dimmingView) | |
transitionCoordinator?.animate(alongsideTransition: { _ in self.dimmingView.alpha = 1 }, | |
completion: nil) | |
} | |
override open func presentationTransitionDidEnd(_ completed: Bool) { | |
super.presentationTransitionDidEnd(completed) | |
if !completed { | |
dimmingView.removeFromSuperview() | |
} | |
} | |
override open func dismissalTransitionWillBegin() { | |
let transitionCoordinator = presentingViewController.transitionCoordinator | |
super.dismissalTransitionWillBegin() | |
transitionCoordinator?.animate(alongsideTransition: { _ in self.dimmingView.alpha = 0 }, | |
completion: nil) | |
} | |
override open func dismissalTransitionDidEnd(_ completed: Bool) { | |
super.dismissalTransitionDidEnd(completed) | |
if completed { | |
dimmingView.removeFromSuperview() | |
} | |
} | |
@objc | |
private func onTapped() { | |
presentingViewController.dismiss(animated: true, completion: nil) | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment