Update framework.

osu-framework

@@ -1 +1 @@
-Subproject commit 231a39bf63544566212b02019f1de2518a60946f
+Subproject commit a4bd66e369f7ed5c1c0dc7a0157950dac1f11c5c

osu.Game.Rulesets.Mania/UI/ManiaPlayfield.cs

@@ -245,7 +245,7 @@ namespace osu.Game.Rulesets.Mania.UI
             barLineContainer.Width = columns.Width;
         }
 
-        private class TransformTimeSpan : Transform<double>
+        private class TransformTimeSpan : Transform<double, Drawable>
         {
             public override double CurrentValue
             {

osu.Game/Graphics/IHasAccentColour.cs

@@ -3,6 +3,7 @@
 
 using OpenTK.Graphics;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Transforms;
 using osu.Game.Graphics.Transforms;
 
 namespace osu.Game.Graphics
@@ -26,7 +27,8 @@ namespace osu.Game.Graphics
         /// <param name="newColour">The new accent colour.</param>
         /// <param name="duration">The tween duration.</param>
         /// <param name="easing">The tween easing.</param>
-        public static void FadeAccent(this IHasAccentColour accentedDrawable, Color4 newColour, double duration = 0, EasingTypes easing = EasingTypes.None)
+        public static void FadeAccent<T>(this T accentedDrawable, Color4 newColour, double duration = 0, EasingTypes easing = EasingTypes.None)
+            where T : Transformable<Drawable>, IHasAccentColour
         {
             accentedDrawable.TransformTo(() => accentedDrawable.AccentColour, newColour, duration, easing, new TransformAccent());
         }

osu.Game/Graphics/Transforms/TransformAccent.cs

@@ -8,7 +8,7 @@ using osu.Framework.MathUtils;
 
 namespace osu.Game.Graphics.Transforms
 {
-    public class TransformAccent : Transform<Color4>
+    public class TransformAccent : Transform<Color4, Drawable>
     {
         /// <summary>
         /// Current value of the transformed colour in linear colour space.

osu.Game/Graphics/UserInterface/PercentageCounter.cs

@@ -45,7 +45,7 @@ namespace osu.Game.Graphics.UserInterface
             Current.Value = Current + amount;
         }
 
-        protected class TransformAccuracy : Transform<double>
+        protected class TransformAccuracy : Transform<double, Drawable>
         {
             public override double CurrentValue
             {

osu.Game/Graphics/UserInterface/RollingCounter.cs

@@ -27,7 +27,7 @@ namespace osu.Game.Graphics.UserInterface
         /// <remarks>
         /// Must be a subclass of Transform(T)
         /// </remarks>
-        protected virtual Type TransformType => typeof(Transform<T>);
+        protected virtual Type TransformType => typeof(Transform<T, Drawable>);
 
         protected SpriteText DisplayedCountSpriteText;
 
@@ -181,17 +181,17 @@ namespace osu.Game.Graphics.UserInterface
         protected virtual void TransformCount(T currentValue, T newValue)
         {
             Debug.Assert(
-                typeof(Transform<T>).IsAssignableFrom(TransformType),
+                typeof(Transform<T, Drawable>).IsAssignableFrom(TransformType),
                 @"transformType should be a subclass of Transform<T>."
             );
 
-            TransformCount((Transform<T>)Activator.CreateInstance(TransformType), currentValue, newValue);
+            TransformCount((Transform<T, Drawable>)Activator.CreateInstance(TransformType), currentValue, newValue);
         }
 
         /// <summary>
         /// Intended to be used by TransformCount(T currentValue, T newValue).
         /// </summary>
-        protected void TransformCount(Transform<T> transform, T currentValue, T newValue)
+        protected void TransformCount(Transform<T, Drawable> transform, T currentValue, T newValue)
         {
             Type type = transform.GetType();
 

osu.Game/Graphics/UserInterface/ScoreCounter.cs

@@ -56,7 +56,7 @@ namespace osu.Game.Graphics.UserInterface
             Current.Value = Current + amount;
         }
 
-        protected class TransformScore : Transform<double>
+        protected class TransformScore : Transform<double, Drawable>
         {
             public override double CurrentValue
             {

osu.Game/Graphics/UserInterface/SimpleComboCounter.cs

@@ -37,7 +37,7 @@ namespace osu.Game.Graphics.UserInterface
             Current.Value = Current + amount;
         }
 
-        private class TransformCounterCount : Transform<int>
+        private class TransformCounterCount : Transform<int, Drawable>
         {
             public override int CurrentValue
             {

osu.Game/Overlays/DragBar.cs

@@ -98,7 +98,7 @@ namespace osu.Game.Overlays
             return true;
         }
 
-        private class TransformSeek : TransformFloat
+        private class TransformSeek : TransformFloat<Drawable>
         {
             public override void Apply(Drawable d)
             {

osu.Game/Screens/Play/HUD/ComboCounter.cs

@@ -205,7 +205,7 @@ namespace osu.Game.Screens.Play.HUD
             Transforms.Add(transform);
         }
 
-        protected class TransformComboRoll : Transform<int>
+        protected class TransformComboRoll : Transform<int, Drawable>
         {
             public override int CurrentValue
             {

osu.Game/Screens/Play/HUD/ComboResultCounter.cs

@@ -34,7 +34,7 @@ namespace osu.Game.Screens.Play.HUD
             Current.Value = Current + amount;
         }
 
-        protected class TransformComboResult : Transform<ulong>
+        protected class TransformComboResult : Transform<ulong, Drawable>
         {
             public override ulong CurrentValue
             {

osu.Game/Screens/Tournament/ScrollingTeamContainer.cs

@@ -308,7 +308,7 @@ namespace osu.Game.Screens.Tournament
             Scrolling
         }
 
-        public class TransformScrollSpeed : TransformFloat
+        public class TransformScrollSpeed : TransformFloat<Drawable>
         {
             public override void Apply(Drawable d)
             {