流程控制，前台可以模拟审批

Util.DiagramDesigner/Converters/InvertBoolConverter.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Globalization;
+using System.Windows.Data;
+using System.Windows.Markup;
+
+namespace Util.DiagramDesigner
+{
+    public class InvertBoolConverter : MarkupExtension, IValueConverter
+    {
+
+        /// <summary>
+        /// Returns the value for the target property of this markup extension.
+        /// </summary>
+        /// <param name="serviceProvider">Object that can provide services for the markup extension.</param>
+        /// <returns>Reference to the instance of this Int32IndexToNumberConverter.</returns>
+        public override object ProvideValue(IServiceProvider serviceProvider)
+        {
+            return this;
+        }
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return !(bool)value;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return !(bool)value;
+        }
+    }
+}

Util.DiagramDesigner/UserControls/DiagramControl.xaml

@@ -22,7 +22,8 @@
             <s:ArrowSizeConverter x:Key="ArrowSizeConverter"/>
             <s:LineDashConverter x:Key="LineDashConverter"/>
             <s:ClipConverter x:Key="ClipConverter"/>
-
+            <s:InvertBoolConverter x:Key="InvertBoolConverter"/>
+            
             <!-- ResizeDecorator Default Template -->
             <!--
             <ControlTemplate x:Key="ResizeDecoratorTemplate" TargetType="{x:Type Control}">
@@ -376,7 +377,7 @@
                                                                 VerticalAlignment="Stretch"
                                                                 Content="{TemplateBinding Content}" />
 
-                                            <Control x:Name="PART_Text" Margin="5">
+                                            <Control x:Name="PART_Text" Margin="5" IsHitTestVisible="{Binding IsReadOnlyText,Converter={StaticResource InvertBoolConverter}}">
                                                 <Control.Style>
                                                     <Style TargetType="Control">
                                                         <Setter Property="Template">

Util.DiagramDesigner/UserControls/TextControl.xaml

@@ -82,7 +82,7 @@
         <TextBox x:Name="PART_ShowText"
                          Text="{Binding Text, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"                                            
                          Foreground="{Binding FontViewModel.FontColor,Converter={StaticResource ColorBrushConverter}}"
-                         IsReadOnly="{Binding IsReadOnly}"
+                         IsReadOnly="{Binding IsReadOnlyText}"
                          FontSize="{Binding FontViewModel.FontSize}" 
                          FontFamily="{Binding FontViewModel.FontFamily}"  
                          FontWeight="{Binding FontViewModel.FontWeight}"

Util.DiagramDesigner/ViewModels/BaseViewModel/SelectableDesignerItemViewModelBase.cs

@@ -234,6 +234,21 @@ namespace Util.DiagramDesigner
             }
         }
 
+        private bool _isReadOnlyText = false;
+        public bool IsReadOnlyText
+        {
+            get
+            {
+                if (IsReadOnly)
+                    return true;
+                return _isReadOnlyText;
+            }
+            set
+            {
+                SetProperty(ref _isReadOnlyText, value);
+            }
+        }
+
         private bool _showText;
         public virtual bool ShowText
         {