Forgot file name

osu.Game/Graphics/Cursor/MenuCursorContainer.cs

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+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Linq;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Cursor;
+using osu.Framework.Input;
+
+namespace osu.Game.Graphics.Cursor
+{
+    /// <summary>
+    /// A container which provides a <see cref="MenuCursor"/> which can be overridden by hovered <see cref="Drawable"/>s.
+    /// </summary>
+    public class MenuCursorContainer : Container, IProvideCursor
+    {
+        protected override Container<Drawable> Content => content;
+        private readonly Container content;
+
+        /// <summary>
+        /// Whether any cursors can be displayed.
+        /// </summary>
+        internal bool CanShowCursor = true;
+
+        public CursorContainer Cursor { get; }
+        public bool ProvidingUserCursor => true;
+
+        public MenuCursorContainer()
+        {
+            AddRangeInternal(new Drawable[]
+            {
+                Cursor = new MenuCursor { State = Visibility.Hidden },
+                content = new Container { RelativeSizeAxes = Axes.Both }
+            });
+        }
+
+        private InputManager inputManager;
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            inputManager = GetContainingInputManager();
+        }
+
+        private IProvideCursor currentTarget;
+        protected override void Update()
+        {
+            base.Update();
+
+            if (!CanShowCursor)
+            {
+                currentTarget?.Cursor?.Hide();
+                return;
+            }
+
+            var newTarget = inputManager.HoveredDrawables.OfType<IProvideCursor>().FirstOrDefault(t => t.ProvidingUserCursor) ?? this;
+
+            if (currentTarget == newTarget)
+                return;
+
+            currentTarget?.Cursor?.Hide();
+            newTarget.Cursor?.Show();
+
+            currentTarget = newTarget;
+        }
+    }
+}