Add ability to make cursor show even during touch input

I completely disagree with this from a UX perspective, but it's come up
so often that I figure we should just let users bone themselves.

osu.Game/Configuration/OsuConfigManager.cs

@@ -91,6 +91,7 @@ namespace osu.Game.Configuration
             // Input
             SetDefault(OsuSetting.MenuCursorSize, 1.0f, 0.5f, 2f, 0.01f);
             SetDefault(OsuSetting.GameplayCursorSize, 1.0f, 0.1f, 2f, 0.01f);
+            SetDefault(OsuSetting.GameplayCursorDuringTouch, false);
             SetDefault(OsuSetting.AutoCursorSize, false);
 
             SetDefault(OsuSetting.MouseDisableButtons, false);
@@ -292,6 +293,7 @@ namespace osu.Game.Configuration
         MenuCursorSize,
         GameplayCursorSize,
         AutoCursorSize,
+        GameplayCursorDuringTouch,
         DimLevel,
         BlurLevel,
         LightenDuringBreaks,

osu.Game/Graphics/Cursor/MenuCursorContainer.cs

@@ -3,16 +3,20 @@
 
 #nullable disable
 
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Input;
 using osu.Framework.Input.StateChanges;
+using osu.Game.Configuration;
 
 namespace osu.Game.Graphics.Cursor
 {
     /// <summary>
-    /// A container which provides a <see cref="MenuCursor"/> which can be overridden by hovered <see cref="Drawable"/>s.
+    /// A container which provides a <see cref="MenuCursor"/>.
+    /// It also handles cases where a more localised cursor is provided by another component (via <see cref="IProvideCursor"/>).
     /// </summary>
     public class MenuCursorContainer : Container, IProvideCursor
     {
@@ -36,12 +40,19 @@ namespace osu.Game.Graphics.Cursor
             });
         }
 
+        private Bindable<bool> showDuringTouch;
+
         private InputManager inputManager;
 
+        [Resolved]
+        private OsuConfigManager config { get; set; }
+
         protected override void LoadComplete()
         {
             base.LoadComplete();
             inputManager = GetContainingInputManager();
+
+            showDuringTouch = config.GetBindable<bool>(OsuSetting.GameplayCursorDuringTouch);
         }
 
         private IProvideCursor currentTarget;
@@ -51,7 +62,7 @@ namespace osu.Game.Graphics.Cursor
             base.Update();
 
             var lastMouseSource = inputManager.CurrentState.Mouse.LastSource;
-            bool hasValidInput = lastMouseSource != null && !(lastMouseSource is ISourcedFromTouch);
+            bool hasValidInput = lastMouseSource != null && (showDuringTouch.Value || lastMouseSource is not ISourcedFromTouch);
 
             if (!hasValidInput || !CanShowCursor)
             {

osu.Game/Localisation/SkinSettingsStrings.cs

@@ -34,6 +34,11 @@ namespace osu.Game.Localisation
         /// </summary>
         public static LocalisableString AutoCursorSize => new TranslatableString(getKey(@"auto_cursor_size"), @"Adjust gameplay cursor size based on current beatmap");
 
+        /// <summary>
+        /// "Show gameplay cursor during touch input"
+        /// </summary>
+        public static LocalisableString GameplayCursorDuringTouch => new TranslatableString(getKey(@"gameplay_cursor_during_touch"), @"Show gameplay cursor during touch input");
+
         /// <summary>
         /// "Beatmap skins"
         /// </summary>

osu.Game/Overlays/Settings/Sections/Gameplay/InputSettings.cs

@@ -32,6 +32,11 @@ namespace osu.Game.Overlays.Settings.Sections.Gameplay
                     LabelText = SkinSettingsStrings.AutoCursorSize,
                     Current = config.GetBindable<bool>(OsuSetting.AutoCursorSize)
                 },
+                new SettingsCheckbox
+                {
+                    LabelText = SkinSettingsStrings.GameplayCursorDuringTouch,
+                    Current = config.GetBindable<bool>(OsuSetting.GameplayCursorDuringTouch)
+                },
             };
 
             if (RuntimeInfo.OS == RuntimeInfo.Platform.Windows)