Implement GrowToFitContainer

osu.Game/Graphics/Containers/GrowToFitContainer.cs

@@ -0,0 +1,22 @@
+// 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 System;
+using osu.Framework.Graphics.Containers;
+
+namespace osu.Game.Graphics.Containers
+{
+    /// <summary>
+    /// A container that grows in size to fit its child and retains its size when its child shrinks
+    /// </summary>
+    public class GrowToFitContainer : Container
+    {
+        protected override void Update()
+        {
+            base.Update();
+            Height = Math.Max(Child.Height, Height);
+            Width = Math.Max(Child.Width, Width);
+        }
+    }
+
+}