94 lines
3.6 KiB
Swift
94 lines
3.6 KiB
Swift
//
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// DuckAnimationController.swift
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// Duckable
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//
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// Created by Shadowfacts on 11/7/22.
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//
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import UIKit
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@available(iOS 16.0, *)
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class DuckAnimationController: NSObject, UIViewControllerAnimatedTransitioning {
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let owner: DuckableContainerViewController
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let needsShrinkAnimation: Bool
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init(owner: DuckableContainerViewController, needsShrinkAnimation: Bool) {
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self.owner = owner
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self.needsShrinkAnimation = needsShrinkAnimation
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}
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func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
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return 0.2
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}
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func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
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guard case .ducked(let duckable, placeholder: let placeholder) = owner.state,
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let presented = transitionContext.viewController(forKey: .from) else {
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transitionContext.completeTransition(false)
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return
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}
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guard transitionContext.isAnimated else {
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transitionContext.completeTransition(true)
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return
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}
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let container = transitionContext.containerView
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if needsShrinkAnimation {
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duckable.duckableViewControllerWillAnimateDuck(withDuration: 0.2, afterDelay: 0.2)
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let presentedFrameInContainer = container.convert(presented.view.bounds, from: presented.view)
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let heightToSlide = container.bounds.height - container.safeAreaInsets.bottom - detentHeight - presentedFrameInContainer.minY
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let slideAnimator = UIViewPropertyAnimator(duration: 0.4, dampingRatio: 1)
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slideAnimator.addAnimations {
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container.transform = CGAffineTransform(translationX: 0, y: heightToSlide + 10)
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}
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slideAnimator.addCompletion { _ in
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duckable.duckableViewControllerDidFinishAnimatingDuck()
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transitionContext.completeTransition(true)
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}
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slideAnimator.startAnimation()
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placeholder.view.transform = CGAffineTransform(translationX: 0, y: 10)
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let bounceAnimator = UIViewPropertyAnimator(duration: 0.1, curve: .linear) {
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placeholder.view.transform = .identity
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container.transform = CGAffineTransform(translationX: 0, y: heightToSlide)
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}
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bounceAnimator.startAnimation(afterDelay: 0.3)
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let fadeAnimator = UIViewPropertyAnimator(duration: 0.1, curve: .linear) {
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presented.view.layer.opacity = 0
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}
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fadeAnimator.addCompletion { _ in
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presented.view.layer.opacity = 1
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}
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fadeAnimator.startAnimation(afterDelay: 0.3)
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} else {
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duckable.duckableViewControllerWillAnimateDuck(withDuration: 0.2, afterDelay: 0)
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placeholder.view.transform = CGAffineTransform(translationX: 0, y: 10)
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let bounceAnimator = UIViewPropertyAnimator(duration: 0.1, curve: .linear) {
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placeholder.view.transform = .identity
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container.transform = CGAffineTransform(translationX: 0, y: -10)
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}
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bounceAnimator.startAnimation(afterDelay: 0.2)
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let fadeAnimator = UIViewPropertyAnimator(duration: 0.1, curve: .linear) {
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presented.view.layer.opacity = 0
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}
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fadeAnimator.addCompletion { _ in
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presented.view.layer.opacity = 1
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duckable.duckableViewControllerDidFinishAnimatingDuck()
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transitionContext.completeTransition(true)
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}
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fadeAnimator.startAnimation(afterDelay: 0.2)
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}
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}
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}
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