Rename GradientBrushAnimator

src/Avalonia.Visuals/Animation/Animators/BaseBrushAnimator.cs

@@ -78,21 +78,21 @@ namespace Avalonia.Animation.Animators
                 return false;
             }
 
-            var gradientAnimator = new IGradientBrushAnimator();
+            var gradientAnimator = new GradientBrushAnimator();
             gradientAnimator.Property = Property;
 
             foreach (var keyframe in this)
             {
                 if (keyframe.Value is ISolidColorBrush solidColorBrush)
                 {
-                    gradientAnimator.Add(new AnimatorKeyFrame(typeof(IGradientBrushAnimator), keyframe.Cue, keyframe.KeySpline)
+                    gradientAnimator.Add(new AnimatorKeyFrame(typeof(GradientBrushAnimator), keyframe.Cue, keyframe.KeySpline)
                     {
-                        Value = IGradientBrushAnimator.ConvertSolidColorBrushToGradient(firstGradient, solidColorBrush)
+                        Value = GradientBrushAnimator.ConvertSolidColorBrushToGradient(firstGradient, solidColorBrush)
                     });
                 }
                 else if (keyframe.Value is IGradientBrush)
                 {
-                    gradientAnimator.Add(new AnimatorKeyFrame(typeof(IGradientBrushAnimator), keyframe.Cue, keyframe.KeySpline)
+                    gradientAnimator.Add(new AnimatorKeyFrame(typeof(GradientBrushAnimator), keyframe.Cue, keyframe.KeySpline)
                     {
                         Value = keyframe.Value
                     });

src/Avalonia.Visuals/Animation/Animators/GradientBrushAnimator.cs

@@ -12,7 +12,7 @@ namespace Avalonia.Animation.Animators
     /// <summary>
     /// Animator that handles <see cref="SolidColorBrush"/> values. 
     /// </summary>
-    public class IGradientBrushAnimator : Animator<IGradientBrush?>
+    public class GradientBrushAnimator : Animator<IGradientBrush?>
     {
         private static readonly RelativePointAnimator s_relativePointAnimator = new RelativePointAnimator();
         private static readonly DoubleAnimator s_doubleAnimator = new DoubleAnimator();

src/Avalonia.Visuals/Animation/Transitions/BrushTransition.cs

@@ -13,7 +13,7 @@ namespace Avalonia.Animation
     /// </summary>
     public class BrushTransition : Transition<IBrush?>
     {
-        private static readonly IGradientBrushAnimator s_gradientAnimator = new IGradientBrushAnimator();
+        private static readonly GradientBrushAnimator s_gradientAnimator = new GradientBrushAnimator();
         private static readonly ISolidColorBrushAnimator s_solidColorBrushAnimator = new ISolidColorBrushAnimator();
 
         public override IObservable<IBrush?> DoTransition(IObservable<double> progress, IBrush? oldValue, IBrush? newValue)
@@ -27,18 +27,18 @@ namespace Avalonia.Animation
             {
                 if (newValue is IGradientBrush newGradient)
                 {
-                    return new AnimatorTransitionObservable<IGradientBrush?, IGradientBrushAnimator>(s_gradientAnimator, progress, Easing, oldGradient, newGradient);
+                    return new AnimatorTransitionObservable<IGradientBrush?, GradientBrushAnimator>(s_gradientAnimator, progress, Easing, oldGradient, newGradient);
                 }
                 else if (newValue is ISolidColorBrush newSolidColorBrushToConvert)
                 {
-                    var convertedSolidColorBrush = IGradientBrushAnimator.ConvertSolidColorBrushToGradient(oldGradient, newSolidColorBrushToConvert);
-                    return new AnimatorTransitionObservable<IGradientBrush?, IGradientBrushAnimator>(s_gradientAnimator, progress, Easing, oldGradient, convertedSolidColorBrush);
+                    var convertedSolidColorBrush = GradientBrushAnimator.ConvertSolidColorBrushToGradient(oldGradient, newSolidColorBrushToConvert);
+                    return new AnimatorTransitionObservable<IGradientBrush?, GradientBrushAnimator>(s_gradientAnimator, progress, Easing, oldGradient, convertedSolidColorBrush);
                 }
             }
             else if (newValue is IGradientBrush newGradient && oldValue is ISolidColorBrush oldSolidColorBrushToConvert)
             {
-                var convertedSolidColorBrush = IGradientBrushAnimator.ConvertSolidColorBrushToGradient(newGradient, oldSolidColorBrushToConvert);
-                return new AnimatorTransitionObservable<IGradientBrush?, IGradientBrushAnimator>(s_gradientAnimator, progress, Easing, convertedSolidColorBrush, newGradient);
+                var convertedSolidColorBrush = GradientBrushAnimator.ConvertSolidColorBrushToGradient(newGradient, oldSolidColorBrushToConvert);
+                return new AnimatorTransitionObservable<IGradientBrush?, GradientBrushAnimator>(s_gradientAnimator, progress, Easing, convertedSolidColorBrush, newGradient);
             }
 
             if (oldValue is ISolidColorBrush oldSolidColorBrush && newValue is ISolidColorBrush newSolidColorBrush)