bugfix(Animation): Fix Infinity animation runasync bug

src/AtomUI.Core/Animations/AnimationExtensions.cs

@@ -0,0 +1,22 @@
+using Avalonia.Animation;
+
+namespace AtomUI.Animations;
+
+internal static class AnimationExtensions
+{
+    public static async Task RunInfiniteAsync(this Animation animation, Animatable control,
+                                              CancellationToken cancellationToken = default)
+    {
+        animation.IterationCount = new IterationCount(1);
+        try 
+        {
+            while (!cancellationToken.IsCancellationRequested)
+            {
+                await animation.RunAsync(control, cancellationToken);
+            }
+        }
+        catch (TaskCanceledException)
+        {
+        }
+    }
+}

src/AtomUI.Desktop.Controls/Skeleton/AbstractSkeleton.cs

@@ -1,4 +1,5 @@
 using System.Reactive.Disposables;
+using AtomUI.Animations;
 using AtomUI.Controls;
 using AtomUI.Data;
 using Avalonia;
@@ -7,6 +8,7 @@ using Avalonia.Animation.Easings;
 using Avalonia.Controls.Primitives;
 using Avalonia.Media;
 using Avalonia.Styling;
+using Avalonia.Threading;
 using Avalonia.VisualTree;
 
 namespace AtomUI.Desktop.Controls;
@@ -150,11 +152,12 @@ public abstract class AbstractSkeleton : TemplatedControl
 
     protected void StartActiveAnimation()
     {
+        _cancellationTokenSource?.Cancel();
+        _cancellationTokenSource = new CancellationTokenSource();
         if (_animation != null)
         {
-            _cancellationTokenSource?.Cancel();
-            _cancellationTokenSource = new CancellationTokenSource();
-            _animation?.RunAsync(this, _cancellationTokenSource.Token);
+            Dispatcher.UIThread.InvokeAsync(async () =>
+                await _animation.RunInfiniteAsync(this, _cancellationTokenSource.Token));
         }
     }
 
@@ -179,7 +182,6 @@ public abstract class AbstractSkeleton : TemplatedControl
             _cancellationTokenSource?.Cancel();
             _animation = new Animation
             {
-                IterationCount = IterationCount.Infinite,
                 Easing         = MotionEasingCurve ?? new CubicEaseOut(),
                 Duration       = MotionDuration,
                 Children =

src/AtomUI.Desktop.Controls/Spin/SpinIndicator.cs

@@ -1,4 +1,5 @@
-using AtomUI.Controls;
+using AtomUI.Animations;
+using AtomUI.Controls;
 using AtomUI.Desktop.Controls.DesignTokens;
 using AtomUI.Desktop.Controls.Themes;
 using AtomUI.Theme;
@@ -15,6 +16,7 @@ using Avalonia.Media;
 using Avalonia.Media.Transformation;
 using Avalonia.Metadata;
 using Avalonia.Styling;
+using Avalonia.Threading;
 
 namespace AtomUI.Desktop.Controls;
 
@@ -139,7 +141,13 @@ public class SpinIndicator : TemplatedControl,
         BuildIndicatorAnimation();
         _cancellationTokenSource?.Cancel();
         _cancellationTokenSource = new CancellationTokenSource();
-        _animation?.RunAsync(this, _cancellationTokenSource.Token);
+        if (_animation != null)
+        {
+            Dispatcher.UIThread.InvokeAsync(async () =>
+            {
+                await _animation.RunInfiniteAsync(this, _cancellationTokenSource.Token);
+            });
+        }
     }
 
     protected override void OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs e)
@@ -182,7 +190,6 @@ public class SpinIndicator : TemplatedControl,
             _cancellationTokenSource?.Cancel();
             _animation = new Animation
             {
-                IterationCount = IterationCount.Infinite,
                 Easing         = MotionEasingCurve ?? new LinearEasing(),
                 Duration       = MotionDuration,
                 Children =

src/AtomUI.Desktop.Controls/Switch/SwitchKnob.cs

@@ -1,4 +1,5 @@
 using System.Reactive.Disposables;
+using AtomUI.Animations;
 using AtomUI.Controls;
 using AtomUI.Desktop.Controls.DesignTokens;
 using AtomUI.Data;
@@ -12,6 +13,7 @@ using Avalonia.Interactivity;
 using Avalonia.LogicalTree;
 using Avalonia.Media;
 using Avalonia.Styling;
+using Avalonia.Threading;
 using Avalonia.VisualTree;
 
 namespace AtomUI.Desktop.Controls;
@@ -170,7 +172,6 @@ internal class SwitchKnob : Control
         _bindingDisposable?.Dispose();
         _bindingDisposable = BindUtils.RelayBind(this, LoadingAnimationDurationProperty, loadingAnimation, Animation.DurationProperty);
         loadingAnimation.Duration       = LoadingAnimationDuration;
-        loadingAnimation.IterationCount = IterationCount.Infinite;
         loadingAnimation.Easing         = new LinearEasing();
         loadingAnimation.Children.Add(new KeyFrame
         {
@@ -197,7 +198,7 @@ internal class SwitchKnob : Control
             KeyTime = LoadingAnimationDuration
         });
         _cancellationTokenSource = new CancellationTokenSource();
-        loadingAnimation.RunAsync(this, _cancellationTokenSource!.Token);
+        Dispatcher.UIThread.InvokeAsync(async () => await loadingAnimation.RunInfiniteAsync(this, _cancellationTokenSource.Token));
     }
 
     public void NotifyStopLoading()