feat: respect presenter size change.

demo/Ursa.Demo/Pages/MarqueeDemo.axaml

@@ -10,6 +10,7 @@
     mc:Ignorable="d">
     <StackPanel>
         <u:Form>
+            <TextBox Width="300" Name="content" u:FormItem.Label="Content" Text="Hello Avalonia"></TextBox>
             <u:EnumSelector
                 u:FormItem.Label="Direction"
                 Name="direction"
@@ -45,8 +46,9 @@
             Speed="{Binding #speed.Value}"
             Background="{DynamicResource SemiBlue1}"
             Direction="{Binding #direction.Value}"
+            Content="{Binding #content.Text}"
             IsRunning="{Binding #running.IsChecked}">
-            <TextBlock VerticalAlignment="Center" Text="Hello World" />
+            
         </u:Marquee>
     </StackPanel>
 </UserControl>

src/Ursa/Controls/Marquee/Marquee.cs

@@ -1,6 +1,7 @@
 using System.Runtime.CompilerServices;
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Controls.Primitives;
 using Avalonia.Layout;
 using Avalonia.Threading;
 using Irihi.Avalonia.Shared.Helpers;
@@ -75,6 +76,10 @@ public class Marquee : ContentControl
         _timer.Elapsed -= TimerOnTick;
         _timer.Stop();
         _timer.Dispose();
+        if (Presenter is not null)
+        {
+            Presenter.SizeChanged -= OnPresenterSizeChanged;
+        }
     }
 
     /// <summary>
@@ -104,6 +109,22 @@ public class Marquee : ContentControl
         set => SetValue(SpeedProperty, value);
     }
 
+    protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
+    {
+        base.OnApplyTemplate(e);
+        if (Presenter is not null)
+        {
+            Presenter.SizeChanged+= OnPresenterSizeChanged;
+        }
+    }
+
+    private void OnPresenterSizeChanged(object sender, SizeChangedEventArgs e)
+    {
+        InvalidatePresenterPosition();
+    }
+
+    
+
     private void TimerOnTick(object sender, System.EventArgs e)
     {
         var layoutValues = Dispatcher.UIThread.Invoke(GetLayoutValues);