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//
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// PresentAndDismissTransition.swift
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// IndieMusic
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//
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// Created by WenLei on 2024/2/18.
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//
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import Foundation
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class DimmingView:UIView {
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override init(frame: CGRect) {
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super.init(frame: frame)
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self.backgroundColor = UIColor.black
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self.alpha = 0
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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}
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class PresentAndDismissTransition: NSObject, UIViewControllerAnimatedTransitioning {
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private var isDismiss:Bool!
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convenience init(_ isDismiss:Bool) {
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self.init()
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self.isDismiss = isDismiss
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}
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func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
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return 0.4
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}
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func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
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guard let toViewController = transitionContext.viewController(forKey: .to),let fromViewController = transitionContext.viewController(forKey: .from) else {
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return
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}
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if !self.isDismiss {
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//Present
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toViewController.view.frame.size.height -= BaseDimensions.topHeight + 22
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toViewController.view.frame.origin.y = UIScreen.main.bounds.size.height
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transitionContext.containerView.addSubview(toViewController.view)
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let toViewpath = UIBezierPath(roundedRect: toViewController.view.bounds, byRoundingCorners: [.topLeft, .topRight], cornerRadii: CGSize(width: 6, height: 6))
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let toViewmask = CAShapeLayer()
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toViewmask.path = toViewpath.cgPath
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toViewController.view.layer.mask = toViewmask
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let fromViewpath = UIBezierPath(roundedRect: fromViewController.view.bounds, byRoundingCorners: [.topLeft, .topRight], cornerRadii: CGSize(width: 6, height: 6))
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let fromViewmask = CAShapeLayer()
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fromViewmask.path = fromViewpath.cgPath
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fromViewController.view.layer.mask = fromViewmask
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let dimmingView = DimmingView(frame: fromViewController.view.frame)
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transitionContext.containerView.insertSubview(dimmingView, belowSubview: toViewController.view)
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fromViewController.view.transform = CGAffineTransform(scaleX: 1.0, y: 1.0)
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UIView.animate(withDuration: transitionDuration(using: transitionContext), delay: 0, options: [.curveEaseOut], animations: {
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dimmingView.alpha = 0.7
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// fromViewController.view.transform = CGAffineTransform(scaleX: 0.9, y: 0.9)
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toViewController.view.frame.origin.y = BaseDimensions.topHeight + 22
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}) { (_) in
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// fromViewController.view.transform = CGAffineTransform(scaleX: 0.9, y: 0.9)
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transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
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}
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} else {
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//Dismiss
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let dimmingView = transitionContext.containerView.subviews.first(where: { (view) -> Bool in
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return view is DimmingView
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})
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// fromViewController.view.frame.origin.y = BaseDimensions.topHeight + 22 //or use finalFrame
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let fromViewSnpaShot = fromViewController.view.snapshotView(afterScreenUpdates: false)
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if let fromViewSnpaShot = fromViewSnpaShot {
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fromViewController.view.isHidden = true
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fromViewSnpaShot.frame = fromViewController.view.frame
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transitionContext.containerView.addSubview(fromViewSnpaShot)
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}
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dimmingView?.alpha = 0.7
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// toViewController.view.transform = CGAffineTransform(scaleX: 0.9, y: 0.9)
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UIView.animate(withDuration: transitionDuration(using: transitionContext), delay: 0, options: [.curveLinear], animations: {
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dimmingView?.alpha = 0
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fromViewSnpaShot?.frame.origin.y = UIScreen.main.bounds.size.height
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// toViewController.view.transform = CGAffineTransform(scaleX: 1.0, y: 1.0)
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}) { (_) in
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if (!transitionContext.transitionWasCancelled) {
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toViewController.view.transform = .identity
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dimmingView?.removeFromSuperview()
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toViewController.view.layer.mask = nil
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}
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fromViewSnpaShot?.removeFromSuperview()
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fromViewController.view.isHidden = false
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transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
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}
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}
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}
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}
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