Add slider

lib/ui/music_player.dart

@@ -26,7 +26,11 @@ class _MusicPlayerState extends State<MusicPlayer> {
   VideoPlayerController? _videoPlayerController;
   ChewieAudioController? _chewieAudioController;
 
-  bool get _isPlaying => _chewieAudioController?.isPlaying ?? false;
+  bool get _isPlaying => _videoPlayerController?.value.isPlaying ?? false;
+
+  Duration? get _duration => _videoPlayerController?.value.duration;
+
+  Duration? get _position => _videoPlayerController?.value.position;
 
   final List<MusicEntry> stack = [];
   int currMusicPos = 0;
@@ -54,9 +58,9 @@ class _MusicPlayerState extends State<MusicPlayer> {
           videoPlayerController: _videoPlayerController!,
           autoPlay: true,
           showControls: false);
-    }
 
-    setState(() {});
+      _videoPlayerController!.addListener(() => setState(() {}));
+    }
   }
 
   Future<void> _stop() async {
@@ -69,7 +73,6 @@ class _MusicPlayerState extends State<MusicPlayer> {
 
   void _pause() async {
     await _chewieAudioController?.pause();
-    setState(() {});
   }
 
   void _playPrevious() async {
@@ -154,6 +157,12 @@ class _MusicPlayerState extends State<MusicPlayer> {
             const SizedBox(height: 20),
             Text(currMusic.artist, textAlign: TextAlign.center),
             const fluent.SizedBox(height: 40),
+            fluent.Slider(
+              max: _duration?.inSeconds as double? ?? 0,
+              value: _position?.inSeconds as double? ?? 0,
+              onChanged: (d) => {},
+            ),
+            const fluent.SizedBox(height: 40),
             fluent.Row(
               children: [
                 IconButton(