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36 lines
1.3 KiB
Swift
36 lines
1.3 KiB
Swift
final class BottomMenuTransitioning: NSObject, UIViewControllerAnimatedTransitioning {
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private let isPresentation: Bool
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init(isPresentation: Bool) {
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self.isPresentation = isPresentation
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super.init()
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}
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func transitionDuration(using _: UIViewControllerContextTransitioning?) -> TimeInterval {
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return kDefaultAnimationDuration
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}
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func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
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guard let fromVC = transitionContext.viewController(forKey: .from),
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let toVC = transitionContext.viewController(forKey: .to) else { return }
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let animatingVC = isPresentation ? toVC : fromVC
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guard let animatingView = animatingVC.view else { return }
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let finalFrameForVC = transitionContext.finalFrame(for: animatingVC)
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var initialFrameForVC = finalFrameForVC
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initialFrameForVC.origin.y += initialFrameForVC.size.height
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let initialFrame = isPresentation ? initialFrameForVC : finalFrameForVC
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let finalFrame = isPresentation ? finalFrameForVC : initialFrameForVC
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animatingView.frame = initialFrame
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UIView.animate(withDuration: transitionDuration(using: transitionContext),
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animations: { animatingView.frame = finalFrame },
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completion: { _ in
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transitionContext.completeTransition(true)
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})
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}
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}
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