Add boss key on windows

osu.Desktop/OsuGameDesktop.cs

@@ -9,6 +9,7 @@
 using Microsoft.Win32;
 using osu.Desktop.Performance;
 using osu.Desktop.Security;
+using osu.Desktop.Platform;
 using osu.Framework.Platform;
 using osu.Game;
 using osu.Desktop.Updater;
@@ -144,6 +145,9 @@ protected override void LoadComplete()
 
             LoadComponentAsync(new ElevatedPrivilegesChecker(), Add);
 
+            if (RuntimeInfo.OS == RuntimeInfo.Platform.Windows)
+                LoadComponentAsync(new BossKeyManager(), Add);
+
             osuSchemeLinkIPCChannel = new OsuSchemeLinkIPCChannel(Host, this);
             archiveImportIPCChannel = new ArchiveImportIPCChannel(Host, this);
         }

osu.Desktop/Platform/BossKeyManager.cs

@@ -0,0 +1,57 @@
+using osu.Framework.Graphics;
+using osu.Framework.Input;
+using osu.Framework.Allocation;
+using osu.Framework.Platform;
+using osu.Framework.Input.Bindings;
+using osu.Framework.Input.Events;
+using osu.Game.Input.Bindings;
+using osu.Game.Overlays;
+using osu.Framework.Logging;
+
+namespace osu.Desktop.Platform
+{
+    internal partial class BossKeyManager : Component, IKeyBindingHandler<GlobalAction>, IHandleGlobalKeyboardInput
+    {
+        [Resolved]
+        private GameHost host { get; set; } = null!;
+
+        [Resolved]
+        private VolumeOverlay volumeOverlay { get; set; } = null!;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+        }
+
+        public bool OnPressed(KeyBindingPressEvent<GlobalAction> e)
+        {
+            if (e.Action == GlobalAction.BossKey && !e.Repeat)
+            {
+                host.Window.Hide();
+                bool previousState = volumeOverlay.IsMuted.Value;
+
+                host.Window.CreateNotificationTrayIcon("osu!", () => Schedule(() => onShow(previousState)));
+                Logger.Log($"Created notification tray icon");
+                volumeOverlay.IsMuted.Value = true;
+
+                return true;
+            }
+
+            return false;
+        }
+
+        private void onShow(bool previousState)
+        {
+            Logger.Log($"Notification tray icon clicked");
+            host.Window.Show();
+            host.Window.Raise();
+            host.Window.RemoveNotificationTrayIcon();
+            Logger.Log($"Notification tray icon removed");
+            volumeOverlay.IsMuted.Value = previousState;
+        }
+
+        public void OnReleased(KeyBindingReleaseEvent<GlobalAction> e)
+        {
+        }
+    }
+}

osu.Game/Input/Bindings/GlobalActionContainer.cs

@@ -84,34 +84,45 @@ public static IEnumerable<GlobalAction> GetGlobalActionsFor(GlobalActionCategory
 
         public void OnReleased(KeyBindingReleaseEvent<GlobalAction> e) => handler?.OnReleased(e);
 
-        private static IEnumerable<KeyBinding> globalKeyBindings => new[]
+        private static IEnumerable<KeyBinding> globalKeyBindings
         {
-            new KeyBinding(InputKey.Up, GlobalAction.SelectPrevious),
-            new KeyBinding(InputKey.Down, GlobalAction.SelectNext),
+            get
+            {
+                KeyBinding[] bindings = new[]
+                {
+                    new KeyBinding(InputKey.Up, GlobalAction.SelectPrevious),
+                    new KeyBinding(InputKey.Down, GlobalAction.SelectNext),
 
-            new KeyBinding(InputKey.Left, GlobalAction.SelectPreviousGroup),
-            new KeyBinding(InputKey.Right, GlobalAction.SelectNextGroup),
+                    new KeyBinding(InputKey.Left, GlobalAction.SelectPreviousGroup),
+                    new KeyBinding(InputKey.Right, GlobalAction.SelectNextGroup),
 
-            new KeyBinding(InputKey.Space, GlobalAction.Select),
-            new KeyBinding(InputKey.Enter, GlobalAction.Select),
-            new KeyBinding(InputKey.KeypadEnter, GlobalAction.Select),
+                    new KeyBinding(InputKey.Space, GlobalAction.Select),
+                    new KeyBinding(InputKey.Enter, GlobalAction.Select),
+                    new KeyBinding(InputKey.KeypadEnter, GlobalAction.Select),
 
-            new KeyBinding(InputKey.Escape, GlobalAction.Back),
-            new KeyBinding(InputKey.ExtraMouseButton1, GlobalAction.Back),
+                    new KeyBinding(InputKey.Escape, GlobalAction.Back),
+                    new KeyBinding(InputKey.ExtraMouseButton1, GlobalAction.Back),
 
-            new KeyBinding(new[] { InputKey.Alt, InputKey.Home }, GlobalAction.Home),
+                    new KeyBinding(new[] { InputKey.Alt, InputKey.Home }, GlobalAction.Home),
 
-            new KeyBinding(new[] { InputKey.Control, InputKey.Shift, InputKey.F }, GlobalAction.ToggleFPSDisplay),
-            new KeyBinding(new[] { InputKey.Control, InputKey.T }, GlobalAction.ToggleToolbar),
-            new KeyBinding(new[] { InputKey.Control, InputKey.Shift, InputKey.S }, GlobalAction.ToggleSkinEditor),
+                    new KeyBinding(new[] { InputKey.Control, InputKey.Shift, InputKey.F }, GlobalAction.ToggleFPSDisplay),
+                    new KeyBinding(new[] { InputKey.Control, InputKey.T }, GlobalAction.ToggleToolbar),
+                    new KeyBinding(new[] { InputKey.Control, InputKey.Shift, InputKey.S }, GlobalAction.ToggleSkinEditor),
 
-            new KeyBinding(new[] { InputKey.Control, InputKey.Alt, InputKey.R }, GlobalAction.ResetInputSettings),
+                    new KeyBinding(new[] { InputKey.Control, InputKey.Alt, InputKey.R }, GlobalAction.ResetInputSettings),
 
-            new KeyBinding(new[] { InputKey.Control, InputKey.Shift, InputKey.R }, GlobalAction.RandomSkin),
+                    new KeyBinding(new[] { InputKey.Control, InputKey.Shift, InputKey.R }, GlobalAction.RandomSkin),
 
-            new KeyBinding(InputKey.F10, GlobalAction.ToggleGameplayMouseButtons),
-            new KeyBinding(InputKey.F12, GlobalAction.TakeScreenshot),
-        };
+                    new KeyBinding(InputKey.F10, GlobalAction.ToggleGameplayMouseButtons),
+                    new KeyBinding(InputKey.F12, GlobalAction.TakeScreenshot),
+                };
+
+                if (OperatingSystem.IsWindows())
+                    return bindings.Append(new KeyBinding(InputKey.Insert, GlobalAction.BossKey));
+
+                return bindings;
+            }
+        }
 
         private static IEnumerable<KeyBinding> overlayKeyBindings => new[]
         {
@@ -456,6 +467,9 @@ public enum GlobalAction
 
         [LocalisableDescription(typeof(GlobalActionKeyBindingStrings), nameof(GlobalActionKeyBindingStrings.EditorTestPlayQuickExitToCurrentTime))]
         EditorTestPlayQuickExitToCurrentTime,
+
+        [LocalisableDescription(typeof(GlobalActionKeyBindingStrings), nameof(GlobalActionKeyBindingStrings.BossKey))]
+        BossKey,
     }
 
     public enum GlobalActionCategory

osu.Game/Localisation/GlobalActionKeyBindingStrings.cs

@@ -404,6 +404,11 @@ public static class GlobalActionKeyBindingStrings
         /// </summary>
         public static LocalisableString DecreaseModSpeed => new TranslatableString(getKey(@"decrease_mod_speed"), @"Decrease mod speed");
 
+        /// <summary>
+	    /// "Boss Key"
+        /// </summary>
+        public static LocalisableString BossKey => new TranslatableString(getKey(@"boss_key"), @"Boss Key");
+
         private static string getKey(string key) => $@"{prefix}:{key}";
     }
 }