Tusker/Packages/Duckable/Sources/Duckable/DuckAnimationController.swift

94 lines
3.6 KiB
Swift

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