Add Android joystick settings

osu.Android/AndroidJoystickSettings.cs

@@ -0,0 +1,76 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Android.Input;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Localisation;
+using osu.Game.Localisation;
+using osu.Game.Overlays.Settings;
+
+namespace osu.Android
+{
+    public class AndroidJoystickSettings : SettingsSubsection
+    {
+        protected override LocalisableString Header => JoystickSettingsStrings.JoystickGamepad;
+
+        private readonly AndroidJoystickHandler joystickHandler;
+
+        private readonly Bindable<bool> enabled = new BindableBool(true);
+
+        private SettingsSlider<float> deadzoneSlider = null!;
+
+        private Bindable<float> handlerDeadzone = null!;
+
+        private Bindable<float> localDeadzone = null!;
+
+        public AndroidJoystickSettings(AndroidJoystickHandler joystickHandler)
+        {
+            this.joystickHandler = joystickHandler;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            // use local bindable to avoid changing enabled state of game host's bindable.
+            handlerDeadzone = joystickHandler.DeadzoneThreshold.GetBoundCopy();
+            localDeadzone = handlerDeadzone.GetUnboundCopy();
+
+            Children = new Drawable[]
+            {
+                new SettingsCheckbox
+                {
+                    LabelText = CommonStrings.Enabled,
+                    Current = enabled
+                },
+                deadzoneSlider = new SettingsSlider<float>
+                {
+                    LabelText = JoystickSettingsStrings.DeadzoneThreshold,
+                    KeyboardStep = 0.01f,
+                    DisplayAsPercentage = true,
+                    Current = localDeadzone,
+                },
+            };
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            enabled.BindTo(joystickHandler.Enabled);
+            enabled.BindValueChanged(e => deadzoneSlider.Current.Disabled = !e.NewValue, true);
+
+            handlerDeadzone.BindValueChanged(val =>
+            {
+                bool disabled = localDeadzone.Disabled;
+
+                localDeadzone.Disabled = false;
+                localDeadzone.Value = val.NewValue;
+                localDeadzone.Disabled = disabled;
+            }, true);
+
+            localDeadzone.BindValueChanged(val => handlerDeadzone.Value = val.NewValue);
+        }
+    }
+}

osu.Android/OsuGameAndroid.cs

@@ -96,6 +96,9 @@ namespace osu.Android
                 case AndroidMouseHandler mh:
                     return new AndroidMouseSettings(mh);
 
+                case AndroidJoystickHandler jh:
+                    return new AndroidJoystickSettings(jh);
+
                 default:
                     return base.CreateSettingsSubsectionFor(handler);
             }