add:浮动栏自定义

Ink Canvas/MainWindow_cs/MW_FloatingBarIcons.cs

@@ -1685,7 +1685,7 @@ namespace Ink_Canvas
         /// </summary>
         /// <param name="sender">发送者</param>
         /// <param name="e">鼠标按钮事件参数</param>
-        private void SymbolIconTools_MouseUp(object sender, MouseButtonEventArgs e)
+        internal void SymbolIconTools_MouseUp(object sender, MouseButtonEventArgs e)
         {
             if (BorderTools.Visibility == Visibility.Visible || BoardBorderTools.Visibility == Visibility.Visible)
             {
@@ -2793,7 +2793,7 @@ namespace Ink_Canvas
         /// </summary>
         /// <param name="sender">发送者</param>
         /// <param name="e">路由事件参数</param>
-        private void EraserIconByStrokes_Click(object sender, MouseButtonEventArgs e)
+        internal void EraserIconByStrokes_Click(object sender, MouseButtonEventArgs e)
         {
             // 禁用高级橡皮擦系统
             DisableEraserOverlay();
@@ -2825,7 +2825,7 @@ namespace Ink_Canvas
         /// </summary>
         /// <param name="sender">发送者</param>
         /// <param name="e">路由事件参数</param>
-        private void CursorWithDelIcon_Click(object sender, MouseButtonEventArgs e)
+        internal void CursorWithDelIcon_Click(object sender, MouseButtonEventArgs e)
         {
             SymbolIconDelete_MouseUp(sender, null);
             CursorIcon_Click(null, null);

Ink Canvas/MainWindow_cs/MW_ShapeDrawing.cs

@@ -32,7 +32,7 @@ namespace Ink_Canvas
         /// 3. 如果形状绘制面板可见，则隐藏它
         /// 4. 如果形状绘制面板不可见，则显示它
         /// </remarks>
-        private void ImageDrawShape_MouseUp(object sender, MouseButtonEventArgs e)
+        internal void ImageDrawShape_MouseUp(object sender, MouseButtonEventArgs e)
         {
             if (BorderDrawShape.Visibility == Visibility.Visible)
             {

Ink Canvas/MainWindow_cs/MW_Toolbar.cs

@@ -0,0 +1,56 @@
+using Ink_Canvas.Controls;
+using Ink_Canvas.Controls.Toolbar;
+using System.Collections.Generic;
+using System.Windows.Controls;
+
+namespace Ink_Canvas
+{
+    public partial class MainWindow
+    {
+        // 这批属性替代了 XAML 中原有的 x:Name 自动生成字段；外部代码继续按原名访问。
+        // 由对应 Toolbar Item 的 AfterBuild 回填，Populate 发生在 Window_Loaded 早期。
+        internal ToolbarImageButton SymbolIconDelete { get; private set; }
+        internal ToolbarImageButton Eraser_Icon { get; private set; }
+        internal ToolbarImageButton EraserByStrokes_Icon { get; private set; }
+        internal ToolbarImageButton SymbolIconSelect { get; private set; }
+        internal ToolbarImageButton ShapeDrawFloatingBarBtn { get; private set; }
+        internal ToolbarImageButton SymbolIconUndo { get; private set; }
+        internal ToolbarImageButton SymbolIconRedo { get; private set; }
+        internal ToolbarImageButton CursorWithDelFloatingBarBtn { get; private set; }
+        internal ToolbarImageButton WhiteboardFloatingBarBtn { get; private set; }
+        internal ToolbarImageButton ToolsFloatingBarBtn { get; private set; }
+        internal ToolbarImageButton Fold_Icon { get; private set; }
+
+        internal void AttachCursorIconView(ToolbarImageButton btn) => Cursor_Icon = btn;
+        internal void AttachPenIconView(ToolbarImageButton btn) => Pen_Icon = btn;
+        internal void AttachSymbolIconDelete(ToolbarImageButton btn) => SymbolIconDelete = btn;
+        internal void AttachEraserIcon(ToolbarImageButton btn) => Eraser_Icon = btn;
+        internal void AttachEraserByStrokesIcon(ToolbarImageButton btn) => EraserByStrokes_Icon = btn;
+        internal void AttachSymbolIconSelect(ToolbarImageButton btn) => SymbolIconSelect = btn;
+        internal void AttachShapeDrawBtn(ToolbarImageButton btn) => ShapeDrawFloatingBarBtn = btn;
+        internal void AttachSymbolIconUndo(ToolbarImageButton btn) => SymbolIconUndo = btn;
+        internal void AttachSymbolIconRedo(ToolbarImageButton btn) => SymbolIconRedo = btn;
+        internal void AttachCursorWithDelBtn(ToolbarImageButton btn) => CursorWithDelFloatingBarBtn = btn;
+        internal void AttachWhiteboardBtn(ToolbarImageButton btn) => WhiteboardFloatingBarBtn = btn;
+        internal void AttachToolsBtn(ToolbarImageButton btn) => ToolsFloatingBarBtn = btn;
+        internal void AttachFoldIcon(ToolbarImageButton btn) => Fold_Icon = btn;
+
+        /// <summary>
+        /// 在 Window_Loaded 早期调用：按 Settings.Toolbar 配置把插件化按钮填充到对应容器。
+        /// 必须在 LoadSettings 之前，因为 LoadSettings 会访问 Cursor_Icon/Pen_Icon/Eraser_Icon 等。
+        /// </summary>
+        internal void InitializeToolbarPlugins()
+        {
+            ToolbarHost = new ToolbarHost(this);
+            var slots = new Dictionary<ToolbarSlot, Panel>
+            {
+                { ToolbarSlot.FloatingBarMain, StackPanelFloatingBar },
+                { ToolbarSlot.FloatingBarCanvasControls, StackPanelCanvasControls },
+                { ToolbarSlot.FloatingBarEnd, StackPanelFloatingBarEnd },
+                { ToolbarSlot.BlackboardLeft, BlackboardLeftSide },
+                { ToolbarSlot.BlackboardRight, BlackboardRightSide }
+            };
+            ToolbarRegistry.Populate(ToolbarHost, slots, Settings?.Toolbar);
+        }
+    }
+}