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TUIKit/TUIRoomKit/Source/View/Component/AlertTransitionAnimator.swift

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+//
+//  AlertTransitionAnimator.swift
+//  TUIRoomKit
+//
+//  Created by janejntang on 2023/4/6.
+//
+
+import Foundation
+
+class AlertTransitionAnimator : NSObject {
+    enum AlertTransitionStyle {
+        case present
+        case dismiss
+    }
+    enum AlertTransitionPosition {
+        case bottom
+        case right
+    }
+    var duration = 0.5
+    var alertTransitionStyle: AlertTransitionStyle = .present
+    var alertTransitionPosition: AlertTransitionPosition = .bottom
+    deinit {
+        debugPrint("deinit \(self)")
+    }
+}
+
+extension AlertTransitionAnimator {
+    private func presentTransition(transitionContext: UIViewControllerContextTransitioning) {
+        guard let fromController = transitionContext.viewController(forKey: .from), let toController = transitionContext.viewController(forKey: .to)
+        else { return }
+        guard let fromView = fromController.view, let toView = toController.view else { return }
+        let contentView = transitionContext.containerView
+        fromView.tintAdjustmentMode = .normal
+        fromView.isUserInteractionEnabled = false
+        toView.isUserInteractionEnabled = false
+        contentView.addSubview(toView)
+        switch alertTransitionPosition {
+        case .bottom:
+            toView.frame = CGRect(x: 0, y: contentView.bounds.size.height, width: contentView.bounds.size.width, height:
+                                    contentView.bounds.size.height)
+        case .right:
+            toView.frame = CGRect(x: contentView.bounds.size.width, y: 0, width: contentView.bounds.size.width/2, height:
+                                    contentView.bounds.size.height)
+        }
+        UIView.animate(withDuration: duration, animations: { [weak self] in
+            guard let self = self else { return }
+            switch self.alertTransitionPosition {
+            case .bottom:
+                toView.frame = CGRect(x: 0, y: 0, width: contentView.bounds.size.width, height: contentView.bounds.size.height)
+            case .right:
+                toView.frame = CGRect(x: 0, y: 0, width: contentView.bounds.size.width, height: contentView.bounds.size.height)
+            }
+        }) { (finish) in
+            fromView.isUserInteractionEnabled = true
+            toView.isUserInteractionEnabled = true
+            transitionContext.completeTransition(true)
+        }
+    }
+    
+    private func dismissTransition(transitionContext: UIViewControllerContextTransitioning) {
+        guard let fromController = transitionContext.viewController(forKey: .from), let toController = transitionContext.viewController(forKey: .to)
+        else { return }
+        guard let fromView = fromController.view, let toView = toController.view else { return }
+        fromView.isUserInteractionEnabled = false
+        toView.isUserInteractionEnabled = false
+        let contentView = transitionContext.containerView
+        UIView.animate(withDuration: duration, animations: { [weak self] in
+            guard let self = self else { return }
+            switch self.alertTransitionPosition {
+            case .bottom:
+                fromView.frame = CGRect(x: 0, y: contentView.bounds.size.height, width: contentView.bounds.size.width, height:
+                                            contentView.bounds.size.height)
+            case .right:
+                fromView.frame = CGRect(x: contentView.bounds.size.width, y: 0, width: contentView.bounds.size.width, height:
+                                            contentView.bounds.size.height)
+            }
+        }) { (finish) in
+            fromView.removeFromSuperview()
+            toView.isUserInteractionEnabled = true
+            transitionContext.completeTransition(true)
+        }
+    }
+}
+
+extension AlertTransitionAnimator: UIViewControllerAnimatedTransitioning {
+    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
+        return duration
+    }
+    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        switch alertTransitionStyle {
+        case .present:
+            presentTransition(transitionContext: transitionContext)
+        case .dismiss:
+            dismissTransition(transitionContext: transitionContext)
+        }
+    }
+}