fix: sync scroll in side-by-side diff does not working after commit 7caa03a

Signed-off-by: leo <[email protected]>

Author: love-linger

src/Views/TextDiffView.axaml.cs

@@ -1450,8 +1450,6 @@ protected override void OnLoaded(RoutedEventArgs e)
                 _scrollViewer.ScrollChanged += OnTextViewScrollChanged;
                 _scrollViewer.Bind(ScrollViewer.OffsetProperty, new Binding("SyncScrollOffset", BindingMode.OneWay));
             }
-
-            TextArea.PointerWheelChanged += OnTextAreaPointerWheelChanged;
         }
 
         protected override void OnUnloaded(RoutedEventArgs e)
@@ -1463,8 +1461,6 @@ protected override void OnUnloaded(RoutedEventArgs e)
                 _scrollViewer = null;
             }
 
-            TextArea.PointerWheelChanged -= OnTextAreaPointerWheelChanged;
-
             base.OnUnloaded(e);
             GC.Collect();
         }
@@ -1507,16 +1503,10 @@ private void OnTextViewScrollGotFocus(object sender, GotFocusEventArgs e)
 
         private void OnTextViewScrollChanged(object sender, ScrollChangedEventArgs e)
         {
-            if (TextArea.IsFocused && DataContext is ViewModels.TwoSideTextDiff diff)
+            if (IsPointerOver && DataContext is ViewModels.TwoSideTextDiff diff)
                 diff.SyncScrollOffset = _scrollViewer?.Offset ?? Vector.Zero;
         }
 
-        private void OnTextAreaPointerWheelChanged(object sender, PointerWheelEventArgs e)
-        {
-            if (!TextArea.IsFocused)
-                Focus();
-        }
-
         private ScrollViewer _scrollViewer = null;
     }