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tylerlantern/BHMenuPresentationTransition.swift

Created December 27, 2018 05:29
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  1. tylerlantern created this gist Dec 27, 2018.
    20 changes: 20 additions & 0 deletions BHMenuPresentationTransition.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,20 @@
    override public func presentationTransitionWillBegin() {
    super.presentationTransitionWillBegin()
    dimmingView.frame = presentingViewController.view.bounds
    containerView?.addSubview(dimmingView)
    guard let coordinator = presentedViewController.transitionCoordinator else {
    return
    }
    coordinator.animate(alongsideTransition: { (context) in
    self.dimmingView.alpha = 0.5
    }, completion: nil)
    }
    override public func dismissalTransitionWillBegin() {
    super.dismissalTransitionWillBegin()
    guard let coordinator = presentedViewController.transitionCoordinator else {
    return
    }
    coordinator.animate(alongsideTransition: { (context) in
    self.dimmingView.alpha = 0.0
    }, completion: nil)
    }