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September 15, 2024 23:12
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Custom PresentationLinkTransition
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| import UIKit | |
| import SwiftUI | |
| import Transmission | |
| extension PresentationLinkTransition { | |
| static let custom: PresentationLinkTransition = .custom( | |
| options: .init(), | |
| CustomTransition() | |
| ) | |
| } | |
| struct CustomTransition: PresentationLinkTransitionRepresentable { | |
| func makeUIPresentationController( | |
| presented: UIViewController, | |
| presenting: UIViewController?, | |
| context: Context | |
| ) -> UIPresentationController { | |
| let presentationController = UISheetPresentationController( | |
| presentedViewController: presented, | |
| presenting: presenting | |
| ) | |
| presented.view.layer.cornerRadius = 14 | |
| return presentationController | |
| } | |
| func updateUIPresentationController( | |
| presentationController: UIPresentationController, | |
| context: Context | |
| ) { | |
| } | |
| func animationController( | |
| forPresented presented: UIViewController, | |
| presenting: UIViewController, | |
| context: Context | |
| ) -> UIViewControllerAnimatedTransitioning? { | |
| MatchedGeometryTransition( | |
| sourceView: context.sourceView, | |
| isPresenting: true, | |
| animation: nil | |
| ) | |
| } | |
| func animationController( | |
| forDismissed dismissed: UIViewController, | |
| context: Context | |
| ) -> UIViewControllerAnimatedTransitioning? { | |
| MatchedGeometryTransition( | |
| sourceView: context.sourceView, | |
| isPresenting: false, | |
| animation: nil | |
| ) | |
| } | |
| } | |
| class MatchedGeometryTransition: PresentationControllerTransition { | |
| weak var sourceView: UIView? | |
| init( | |
| sourceView: UIView, | |
| isPresenting: Bool, | |
| animation: Animation? | |
| ) { | |
| super.init(isPresenting: isPresenting, animation: animation) | |
| self.sourceView = sourceView | |
| } | |
| override func transitionAnimator( | |
| using transitionContext: UIViewControllerContextTransitioning | |
| ) -> UIViewPropertyAnimator { | |
| let animator = UIViewPropertyAnimator(animation: animation) ?? UIViewPropertyAnimator(duration: duration, curve: completionCurve) | |
| guard | |
| let presented = transitionContext.viewController(forKey: isPresenting ? .to : .from) | |
| else { | |
| transitionContext.completeTransition(false) | |
| return animator | |
| } | |
| let isPresenting = isPresenting | |
| let hostingController = presented as? AnyHostingController | |
| let oldValue = hostingController?.disableSafeArea ?? false | |
| hostingController?.disableSafeArea = true | |
| var sourceFrame = sourceView.map { | |
| $0.convert($0.frame, to: transitionContext.containerView) | |
| } ?? transitionContext.containerView.frame | |
| let presentedFrame = isPresenting | |
| ? transitionContext.finalFrame(for: presented) | |
| : transitionContext.initialFrame(for: presented) | |
| if isPresenting { | |
| transitionContext.containerView.addSubview(presented.view) | |
| presented.view.frame = sourceFrame | |
| presented.view.layoutIfNeeded() | |
| hostingController?.render() | |
| } | |
| animator.addAnimations { | |
| if isPresenting { | |
| hostingController?.disableSafeArea = oldValue | |
| } | |
| presented.view.frame = isPresenting ? presentedFrame : sourceFrame | |
| presented.view.layoutIfNeeded() | |
| } | |
| animator.addCompletion { animatingPosition in | |
| hostingController?.disableSafeArea = oldValue | |
| switch animatingPosition { | |
| case .end: | |
| transitionContext.completeTransition(true) | |
| default: | |
| transitionContext.completeTransition(false) | |
| } | |
| } | |
| return animator | |
| } | |
| } |
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