add legacy rank display

osu.Game/Skinning/LegacyRankDisplay.cs

@@ -0,0 +1,47 @@
+// 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.
+
+#nullable disable
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Textures;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Rulesets.Scoring;
+
+namespace osu.Game.Skinning
+{
+    public partial class LegacyRankDisplay : CompositeDrawable, ISerialisableDrawable
+    {
+        public bool UsesFixedAnchor { get; set; }
+
+        [Resolved]
+        private ScoreProcessor scoreProcessor { get; set; } = null!;
+
+        [Resolved]
+        private ISkinSource source { get; set; } = null!;
+
+        private readonly Sprite rank;
+
+        public LegacyRankDisplay()
+        {
+            AutoSizeAxes = Axes.Both;
+
+            AddInternal(rank = new Sprite());
+        }
+
+        protected override void LoadComplete()
+        {
+
+            var skin = source.FindProvider(s => getTexture(s, "A") != null);
+
+            rank.Texture = getTexture(skin, scoreProcessor.Rank.Value.ToString());
+
+            scoreProcessor.Rank.BindValueChanged(v => rank.Texture = getTexture(skin, v.NewValue.ToString()));
+        }
+
+        private static Texture getTexture(ISkin skin, string name) => skin?.GetTexture($"ranking-{name}");
+    }
+}