PiP and UI improvements

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
     }
 }