fix:批注栏非选定项始终上下居中

Ink Canvas/MainWindow_cs/MW_FloatingBarIcons.cs

@@ -4814,6 +4814,7 @@ private void AnimateFloatingBarHighlightTo(string mode)
                     System.Windows.Controls.Canvas.SetTop(indicatorBar, nextBarTop);
 
                     selectionBG.Visibility = Visibility.Visible;
+                    targetButton.SetSelectedVisualOffset(true);
                     _lastHighlightButton = targetButton;
                     return;
                 }
@@ -4839,6 +4840,9 @@ private void AnimateFloatingBarHighlightTo(string mode)
                     if (double.IsNaN(prevBarLeft)) prevBarLeft = nextBarLeft;
                 }
 
+                if (_lastHighlightButton != null && _lastHighlightButton != targetButton)
+                    _lastHighlightButton.SetSelectedVisualOffset(false);
+                targetButton.SetSelectedVisualOffset(true);
                 _lastHighlightButton = targetButton;
 
                 selectionBG.Width = nextWidth;
@@ -5094,6 +5098,10 @@ private void DeferFloatingBarHighlightIfLayoutPending(string mode)
 
         private void HideAllSelectionHighlights()
         {
+            if (_lastHighlightButton != null)
+            {
+                _lastHighlightButton.SetSelectedVisualOffset(false);
+            }
             if (SelectionBGFloatingBar != null)
             {
                 SelectionBGFloatingBar.Visibility = Visibility.Hidden;

InkCanvas.Controls/ToolbarImageButton.xaml

@@ -5,12 +5,18 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:ikw="http://schemas.inkore.net/lib/ui/wpf"
              mc:Ignorable="d">
-    <Border x:Name="ButtonBorder" CornerRadius="4" Background="Transparent" Margin="0,2,0,7">
+    <Border x:Name="ButtonBorder"
+            CornerRadius="4"
+            Background="Transparent"
+            Width="44"
+            Height="52">
         <Grid Name="ButtonPanel" d:Background="Red"
               MouseDown="ButtonPanel_MouseDown"
               MouseLeave="ButtonPanel_MouseLeave"
               MouseUp="ButtonPanel_MouseUp"
               Background="Transparent"
+              VerticalAlignment="Center"
+              RenderTransformOrigin="0.5,0.5"
               Width="44" Height="43">
             <Image x:Name="ButtonImage" HorizontalAlignment="Center" VerticalAlignment="Top"
                    RenderOptions.BitmapScalingMode="HighQuality" Height="24" Width="24" Margin="0,1,0,0">

InkCanvas.Controls/ToolbarImageButton.xaml.cs

@@ -1,7 +1,9 @@
+using System;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
+using System.Windows.Media.Animation;
 
 namespace Ink_Canvas.Controls
 {
@@ -87,6 +89,24 @@ public double IconHeight
             set => ButtonImage.Height = value;
         }
 
+        public void SetSelectedVisualOffset(bool isSelected)
+        {
+            var transform = ButtonPanel.RenderTransform as TranslateTransform;
+            if (transform == null)
+            {
+                transform = new TranslateTransform();
+                ButtonPanel.RenderTransform = transform;
+            }
+
+            var animation = new DoubleAnimation
+            {
+                To = isSelected ? -3 : 0,
+                Duration = TimeSpan.FromMilliseconds(120),
+                EasingFunction = new CubicEase { EasingMode = EasingMode.EaseOut }
+            };
+            transform.BeginAnimation(TranslateTransform.YProperty, animation);
+        }
+
         public event MouseButtonEventHandler ButtonMouseDown;
         public event MouseEventHandler ButtonMouseLeave;
         public event MouseButtonEventHandler ButtonMouseUp;