80 lines
2.7 KiB
Swift
80 lines
2.7 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import UIKit
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final class ZoomTransitionController: NSObject {
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var isInteractive = false
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weak var fromDelegate: ZoomAnimatorDelegate?
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weak var toDelegate: ZoomAnimatorDelegate?
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private let animator = ZoomAnimator()
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private let interactionController = ZoomDismissalInteractionController()
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func didPanWith(gestureRecognizer: UIPanGestureRecognizer) {
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interactionController.didPanWith(gestureRecognizer: gestureRecognizer)
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}
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}
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extension ZoomTransitionController: UIViewControllerTransitioningDelegate {
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func animationController(
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forPresented presented: UIViewController,
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presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
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presentingAnimator()
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}
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func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
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dismissingAnimator()
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}
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func interactionControllerForDismissal(
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using animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning? {
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interactionController(animator: animator)
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}
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}
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extension ZoomTransitionController: UINavigationControllerDelegate {
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func navigationController(_ navigationController: UINavigationController,
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animationControllerFor operation: UINavigationController.Operation,
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from fromVC: UIViewController,
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to toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
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operation == .push ? presentingAnimator() : dismissingAnimator()
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}
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func navigationController(
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_ navigationController: UINavigationController,
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interactionControllerFor animationController: UIViewControllerAnimatedTransitioning)
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-> UIViewControllerInteractiveTransitioning? {
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interactionController(animator: animator)
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}
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}
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private extension ZoomTransitionController {
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private func presentingAnimator() -> UIViewControllerAnimatedTransitioning {
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animator.isPresenting = true
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animator.fromDelegate = fromDelegate
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animator.toDelegate = toDelegate
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return animator
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}
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private func dismissingAnimator() -> UIViewControllerAnimatedTransitioning {
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animator.isPresenting = false
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let tmp = fromDelegate
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animator.fromDelegate = toDelegate
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animator.toDelegate = tmp
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return animator
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}
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private func interactionController(
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animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning? {
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guard isInteractive else { return nil }
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interactionController.animator = animator
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return interactionController
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}
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}
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