Add global action for toggling now playing overlay

osu.Game/Input/Bindings/GlobalActionContainer.cs

@@ -24,6 +24,7 @@ namespace osu.Game.Input.Bindings
 
         public IEnumerable<KeyBinding> GlobalKeyBindings => new[]
         {
+            new KeyBinding(InputKey.F6, GlobalAction.ToggleNowPlaying),
             new KeyBinding(InputKey.F8, GlobalAction.ToggleChat),
             new KeyBinding(InputKey.F9, GlobalAction.ToggleSocial),
             new KeyBinding(InputKey.F10, GlobalAction.ToggleGameplayMouseButtons),
@@ -137,5 +138,8 @@ namespace osu.Game.Input.Bindings
 
         [Description("Play / pause")]
         MusicPlay,
+
+        [Description("Toggle now playing overlay")]
+        ToggleNowPlaying,
     }
 }

osu.Game/OsuGame.cs

@@ -61,6 +61,8 @@ namespace osu.Game
 
         private NotificationOverlay notifications;
 
+        private NowPlayingOverlay nowPlaying;
+
         private DirectOverlay direct;
 
         private SocialOverlay social;
@@ -624,7 +626,7 @@ namespace osu.Game
                 Origin = Anchor.TopRight,
             }, rightFloatingOverlayContent.Add, true);
 
-            loadComponentSingleFile(new NowPlayingOverlay
+            loadComponentSingleFile(nowPlaying = new NowPlayingOverlay
             {
                 GetToolbarHeight = () => ToolbarOffset,
                 Anchor = Anchor.TopRight,
@@ -822,6 +824,10 @@ namespace osu.Game
 
             switch (action)
             {
+                case GlobalAction.ToggleNowPlaying:
+                    nowPlaying.ToggleVisibility();
+                    return true;
+
                 case GlobalAction.ToggleChat:
                     chatOverlay.ToggleVisibility();
                     return true;