PiP and UI improvements

macOS/PictureInPictureDelegate.swift

@@ -0,0 +1,28 @@
+import AVKit
+import Foundation
+
+final class PictureInPictureDelegate: NSObject, AVPlayerViewPictureInPictureDelegate {
+    var playerModel: PlayerModel!
+
+    func playerViewShouldAutomaticallyDismissAtPicture(inPictureStart _: AVPlayerView) -> Bool {
+        false
+    }
+
+    func playerViewWillStartPicture(inPicture _: AVPlayerView) {
+        playerModel.playingInPictureInPicture = true
+        playerModel.presentingPlayer = false
+    }
+
+    func playerViewWillStopPicture(inPicture _: AVPlayerView) {
+        playerModel.playingInPictureInPicture = false
+        playerModel.presentPlayer()
+    }
+
+    func playerView(
+        _: AVPlayerView,
+        restoreUserInterfaceForPictureInPictureStopWithCompletionHandler completionHandler: (Bool) -> Void
+    ) {
+        playerModel.presentingPlayer = true
+        completionHandler(true)
+    }
+}

macOS/PlayerViewController.swift

@@ -4,18 +4,24 @@ import SwiftUI
 final class PlayerViewController: NSViewController {
     var playerModel: PlayerModel!
     var playerView = AVPlayerView()
+    var pictureInPictureDelegate = PictureInPictureDelegate()
 
     override func viewDidDisappear() {
-        playerModel.pause()
+        if !playerModel.playingInPictureInPicture {
+            playerModel.pause()
+        }
         super.viewDidDisappear()
     }
 
     override func loadView() {
         playerView.player = playerModel.player
+        pictureInPictureDelegate.playerModel = playerModel
 
         playerView.allowsPictureInPicturePlayback = true
         playerView.showsFullScreenToggleButton = true
 
+        playerView.pictureInPictureDelegate = pictureInPictureDelegate
+
         view = playerView
     }
 }