show mod settings in ModIcon tooltip

osu.Game.Rulesets.Catch/Mods/CatchModDifficultyAdjust.cs

@@ -30,6 +30,11 @@ namespace osu.Game.Rulesets.Catch.Mods
             Value = 5,
         };
 
+        public override string IconTooltip => ($"{Name} ({(CircleSize.IsDefault ? "" : $"CS {CircleSize.Value.ToString()}, ")}" +
+                                              $"{(DrainRate.IsDefault ? "" : $"HP {DrainRate.Value.ToString()}, ")}" +
+                                              $"{(OverallDifficulty.IsDefault ? "" : $"OD {OverallDifficulty.Value.ToString()}, ")}" +
+                                              $"{(ApproachRate.IsDefault ? "" : $"AR {ApproachRate.Value.ToString()}")}").TrimEnd(new char[] { ',', ' ' }) + ")";
+
         protected override void TransferSettings(BeatmapDifficulty difficulty)
         {
             base.TransferSettings(difficulty);

osu.Game.Rulesets.Osu/Mods/OsuModDifficultyAdjust.cs

@@ -30,6 +30,11 @@ namespace osu.Game.Rulesets.Osu.Mods
             Value = 5,
         };
 
+        public override string IconTooltip => ($"{Name} ({(CircleSize.IsDefault ? "" : $"CS {CircleSize.Value.ToString()}, ")}" +
+                                              $"{(DrainRate.IsDefault ? "" : $"HP {DrainRate.Value.ToString()}, ")}" +
+                                              $"{(OverallDifficulty.IsDefault ? "" : $"OD {OverallDifficulty.Value.ToString()}, ")}" +
+                                              $"{(ApproachRate.IsDefault ? "" : $"AR {ApproachRate.Value.ToString()}")}").TrimEnd(new char[] { ',', ' ' }) + ")";
+
         protected override void TransferSettings(BeatmapDifficulty difficulty)
         {
             base.TransferSettings(difficulty);

osu.Game/Rulesets/Mods/Mod.cs

@@ -5,6 +5,7 @@ using System;
 using Newtonsoft.Json;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.IO.Serialization;
+using osu.Game.Rulesets.UI;
 
 namespace osu.Game.Rulesets.Mods
 {
@@ -42,6 +43,16 @@ namespace osu.Game.Rulesets.Mods
         [JsonIgnore]
         public virtual string Description => string.Empty;
 
+        /// <summary>
+        /// The tooltip to display for this mod when used in a <see cref="ModIcon"/>.
+        /// </summary>
+        /// <remarks>
+        /// Differs from <see cref="Name"/>, as the value of attributes (AR, CS, etc) changeable via the mod
+        /// are displayed in the tooltip.
+        /// </remarks>
+        [JsonIgnore]
+        public virtual string IconTooltip => Name;
+
         /// <summary>
         /// The score multiplier of this mod.
         /// </summary>

osu.Game/Rulesets/Mods/ModDifficultyAdjust.cs

@@ -52,6 +52,9 @@ namespace osu.Game.Rulesets.Mods
             Value = 5,
         };
 
+        public override string IconTooltip => $"{Name} ({(DrainRate.IsDefault ? $"HP {DrainRate.Value.ToString()}, " : "")}" +
+                                              $"{(OverallDifficulty.IsDefault ? $"OD {OverallDifficulty.Value.ToString()}, " : "")})";
+
         private BeatmapDifficulty difficulty;
 
         public void ReadFromDifficulty(BeatmapDifficulty difficulty)

osu.Game/Rulesets/Mods/ModDoubleTime.cs

@@ -30,5 +30,7 @@ namespace osu.Game.Rulesets.Mods
             Value = 1.5,
             Precision = 0.01,
         };
+
+        public override string IconTooltip => $"{Name}{(SpeedChange.IsDefault ? "" : $" ({SpeedChange.Value}x)")}";
     }
 }

osu.Game/Rulesets/Mods/ModEasy.cs

@@ -28,6 +28,8 @@ namespace osu.Game.Rulesets.Mods
             MaxValue = 10
         };
 
+        public override string IconTooltip => $"{Name}{(Retries.IsDefault ? "" : $" ({Retries.Value} lives)")}";
+
         private int retries;
 
         private BindableNumber<double> health;

osu.Game/Rulesets/Mods/ModHalfTime.cs

@@ -30,5 +30,7 @@ namespace osu.Game.Rulesets.Mods
             Value = 0.75,
             Precision = 0.01,
         };
+
+        public override string IconTooltip => $"{Name}{(SpeedChange.IsDefault ? "" : $" ({SpeedChange.Value}x)")}";
     }
 }

osu.Game/Rulesets/Mods/ModTimeRamp.cs

@@ -26,6 +26,8 @@ namespace osu.Game.Rulesets.Mods
         [SettingSource("Final rate", "The final speed to ramp to")]
         public abstract BindableNumber<double> FinalRate { get; }
 
+        public override string IconTooltip => $"{Name} ({InitialRate.Value}x to {FinalRate.Value}x)";
+
         private double finalRateTime;
         private double beginRampTime;
 

osu.Game/Rulesets/UI/ModIcon.cs

@@ -48,7 +48,7 @@ namespace osu.Game.Rulesets.UI
 
             type = mod.Type;
 
-            TooltipText = mod.Name;
+            TooltipText = mod.IconTooltip;
 
             Size = new Vector2(size);