优化

InkCanvas.Controls/BoardToolbarButton.xaml.cs

@@ -113,6 +113,34 @@ namespace Ink_Canvas.Controls
             set => LabelTextBlock.Foreground = value;
         }
 
+        public static readonly DependencyProperty IsEnabledBindingProperty = DependencyProperty.Register(
+            nameof(IsEnabledBinding), typeof(bool?), typeof(BoardToolbarButton),
+            new PropertyMetadata(null, OnIsEnabledBindingChanged));
+
+        private static void OnIsEnabledBindingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            var button = (BoardToolbarButton)d;
+            if (e.NewValue is bool isEnabled)
+            {
+                button.IsEnabled = isEnabled;
+                button.UpdateIconOpacity(isEnabled);
+            }
+        }
+
+        public bool? IsEnabledBinding
+        {
+            get => (bool?)GetValue(IsEnabledBindingProperty);
+            set => SetValue(IsEnabledBindingProperty, value);
+        }
+
+        private void UpdateIconOpacity(bool isEnabled)
+        {
+            if (ButtonImage != null)
+            {
+                ButtonImage.Opacity = isEnabled ? 1.0 : 0.4;
+            }
+        }
+
         public BoardToolbarButton()
         {
             InitializeComponent();

InkCanvas.Controls/QuickPanelButton.xaml.cs

@@ -65,7 +65,7 @@ namespace Ink_Canvas.Controls
             set => SetValue(LabelFontSizeProperty, value);
         }
 
-        public event RoutedEventHandler ButtonMouseUp;
+        public event MouseButtonEventHandler ButtonMouseUp;
 
         public QuickPanelButton()
         {
@@ -74,7 +74,7 @@ namespace Ink_Canvas.Controls
 
         private void ButtonPanel_MouseUp(object sender, MouseButtonEventArgs e)
         {
-            ButtonMouseUp?.Invoke(this, new RoutedEventArgs(e.RoutedEvent, this));
+            ButtonMouseUp?.Invoke(this, e);
         }
     }
 }

InkCanvas.Controls/ToolMenuButton.xaml.cs

@@ -84,7 +84,7 @@ namespace Ink_Canvas.Controls
 
         public event MouseButtonEventHandler ButtonMouseDown;
         public event MouseEventHandler ButtonMouseLeave;
-        public event RoutedEventHandler ButtonMouseUp;
+        public event MouseButtonEventHandler ButtonMouseUp;
 
         public ToolMenuButton()
         {
@@ -115,7 +115,7 @@ namespace Ink_Canvas.Controls
 
         private void ButtonPanel_MouseUp(object sender, MouseButtonEventArgs e)
         {
-            ButtonMouseUp?.Invoke(this, new RoutedEventArgs(e.RoutedEvent, this));
+            ButtonMouseUp?.Invoke(this, e);
         }
     }
 }

InkCanvas.Controls/ToolbarImageButton.xaml.cs

@@ -61,7 +61,7 @@ namespace Ink_Canvas.Controls
 
         public event MouseButtonEventHandler ButtonMouseDown;
         public event MouseEventHandler ButtonMouseLeave;
-        public event RoutedEventHandler ButtonMouseUp;
+        public event MouseButtonEventHandler ButtonMouseUp;
 
         public ToolbarImageButton()
         {
@@ -104,7 +104,7 @@ namespace Ink_Canvas.Controls
                 ButtonPanel.Background = Brushes.Transparent;
                 _lastPressedButton = null;
             }
-            ButtonMouseUp?.Invoke(this, new RoutedEventArgs(e.RoutedEvent, this));
+            ButtonMouseUp?.Invoke(this, e);
         }
     }
 }