Add new display for timing row attributes

osu.Game/Screens/Edit/Timing/RowAttributes/TimingRowAttribute.cs

@@ -0,0 +1,45 @@
+// 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.Bindables;
+using osu.Framework.Extensions;
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Beatmaps.Timing;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Sprites;
+
+namespace osu.Game.Screens.Edit.Timing.RowAttributes
+{
+    internal class TimingRowAttribute : RowAttribute
+    {
+        private readonly BindableNumber<double> beatLength;
+        private readonly Bindable<TimeSignatures> timeSignature;
+        private OsuSpriteText text;
+
+        public TimingRowAttribute(TimingControlPoint timing)
+            : base(timing)
+        {
+            timeSignature = timing.TimeSignatureBindable.GetBoundCopy();
+            beatLength = timing.BeatLengthBindable.GetBoundCopy();
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Content.Add(text = new OsuSpriteText
+            {
+                Anchor = Anchor.CentreLeft,
+                Origin = Anchor.CentreLeft,
+                Font = OsuFont.GetFont(size: EditorTable.TEXT_SIZE, weight: FontWeight.Regular),
+            });
+
+            timeSignature.BindValueChanged(_ => updateText());
+            beatLength.BindValueChanged(_ => updateText(), true);
+        }
+
+        private void updateText() =>
+            text.Text = $"{60000 / beatLength.Value:n1}bpm {timeSignature.Value.GetDescription()}";
+    }
+}