分离出一个小demo

AIStudio.Wpf.DiagramDesigner.Test/AIStudio.Wpf.DiagramDesigner.Test.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\AIStudio.Wpf.DiagramDesigner\AIStudio.Wpf.DiagramDesigner.csproj" />
+    <ProjectReference Include="..\AIStudio.Wpf.DiagramHelper\AIStudio.Wpf.DiagramHelper.csproj" />
+    <ProjectReference Include="..\AIStudio.Wpf.Flowchart\AIStudio.Wpf.Flowchart.csproj" />
+  </ItemGroup>
+
+</Project>

AIStudio.Wpf.DiagramDesigner.Test/App.xaml

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+<Application x:Class="AIStudio.Wpf.DiagramDesigner.Test.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:AIStudio.Wpf.DiagramDesigner.Test"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="pack://application:,,,/AIStudio.Wpf.DiagramDesigner;component/Resources/Styles/ScrollBar.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/AIStudio.Wpf.DiagramDesigner;component/Resources/Styles/Expander.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/AIStudio.Wpf.DiagramDesigner;component/Resources/Styles/GroupBox.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/AIStudio.Wpf.DiagramDesigner;component/Resources/Styles/ToolTip.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/AIStudio.Wpf.DiagramDesigner;component/Resources/Styles/ScrollViewer.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/AIStudio.Wpf.DiagramDesigner;component/Resources/Styles/ZoomBox.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/AIStudio.Wpf.DiagramDesigner;component/Resources/Styles/DesignerItems.xaml" />
+
+                <ResourceDictionary Source="pack://application:,,,/AIStudio.Wpf.Flowchart;component/ViewModels/FlowNode.xaml"/>
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>      
+    </Application.Resources>
+</Application>

AIStudio.Wpf.DiagramDesigner.Test/App.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace AIStudio.Wpf.DiagramDesigner.Test
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

AIStudio.Wpf.DiagramDesigner.Test/AssemblyInfo.cs

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+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]

AIStudio.Wpf.DiagramDesigner.Test/MainWindow.xaml

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+<Window x:Class="AIStudio.Wpf.DiagramDesigner.Test.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:AIStudio.Wpf.DiagramDesigner.Test"
+        xmlns:dd="https://gitee.com/akwkevin/aistudio.-wpf.-diagram"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="450" Width="800">
+    <Window.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="pack://application:,,,/AIStudio.Wpf.Flowchart;component/ViewModels/FlowNode.xaml"/>
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Window.Resources>
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto"/>
+            <ColumnDefinition/>
+            <ColumnDefinition Width="Auto"/>
+        </Grid.ColumnDefinitions>
+        <!-- ToolBox Control -->
+        <local:ToolBoxControl Grid.Column="0" DataContext="{Binding ToolBoxViewModel}" />
+
+        <GridSplitter Grid.Column="1"
+						  HorizontalAlignment="Left"
+						  VerticalAlignment="Stretch"
+						  Background="Transparent"
+						  Width="3" />
+
+        <!-- Diagram Control -->
+        <dd:DiagramControl Grid.Column="1" x:Name="diagram" DataContext="{Binding DiagramViewModel}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />
+
+    </Grid>
+</Window>

AIStudio.Wpf.DiagramDesigner.Test/MainWindow.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+using AIStudio.Wpf.DiagramDesigner.Test.ViewModels;
+
+namespace AIStudio.Wpf.DiagramDesigner.Test
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+            this.DataContext = new MainWindowViewModel();
+        }
+    }
+}

AIStudio.Wpf.DiagramDesigner.Test/ToolBoxControl.xaml

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+<UserControl x:Class="AIStudio.Wpf.DiagramDesigner.Test.ToolBoxControl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:dd="https://gitee.com/akwkevin/aistudio.-wpf.-diagram"
+             mc:Ignorable="d" 
+             d:DesignHeight="300" d:DesignWidth="300">
+
+    <Border BorderBrush="LightGray" BorderThickness="1">
+        <ItemsControl ItemsSource="{Binding ToolBoxItems}">
+            <ItemsControl.Template>
+                <ControlTemplate TargetType="{x:Type ItemsControl}">
+                    <Border BorderThickness="{TemplateBinding Border.BorderThickness}"
+                                                Padding="{TemplateBinding Control.Padding}"
+                                                BorderBrush="{TemplateBinding Border.BorderBrush}"
+                                                Background="{TemplateBinding Panel.Background}"
+                                                SnapsToDevicePixels="True">
+                        <ScrollViewer VerticalScrollBarVisibility="Auto">
+                            <ItemsPresenter SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" />
+                        </ScrollViewer>
+                    </Border>
+                </ControlTemplate>
+            </ItemsControl.Template>
+            <ItemsControl.ItemsPanel>
+                <ItemsPanelTemplate>
+                    <StackPanel/>
+                </ItemsPanelTemplate>
+            </ItemsControl.ItemsPanel>
+            <ItemsControl.ItemContainerStyle>
+                <Style TargetType="{x:Type ContentPresenter}">
+                    <Setter Property="Control.Padding"
+                                Value="10" />
+                    <Setter Property="ContentControl.HorizontalContentAlignment"
+                                Value="Stretch" />
+                    <Setter Property="ContentControl.VerticalContentAlignment"
+                                Value="Stretch" />
+                    <Setter Property="ToolTip"
+                                Value="{Binding ToolTip}" />
+                    <Setter Property="dd:DragAndDropProps.EnabledForDrag"
+                                Value="True" />
+                </Style>
+            </ItemsControl.ItemContainerStyle>
+            <ItemsControl.ItemTemplate>
+                <DataTemplate>
+                    <Grid Margin="10" Width="{Binding Width}" Height="{Binding Height}">
+                        <Rectangle Name="Border"
+                                    StrokeThickness="1"
+                                    StrokeDashArray="2"
+                                    Fill="Transparent"
+                                    SnapsToDevicePixels="true"/>
+                        <Grid IsHitTestVisible="False">
+                            <ContentControl Style="{StaticResource CustomFlowNodeStyle}" Margin="2"/>
+                            <TextBlock Text="{Binding Text}" VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}" />
+                        </Grid>
+                    </Grid>
+                    <DataTemplate.Triggers>
+                        <Trigger Property="IsMouseOver" Value="true">
+                            <Setter TargetName="Border" Property="Stroke" Value="Gray"/>
+                        </Trigger>
+                    </DataTemplate.Triggers>
+                </DataTemplate>
+            </ItemsControl.ItemTemplate>
+        </ItemsControl>
+    </Border>
+</UserControl>

AIStudio.Wpf.DiagramDesigner.Test/ToolBoxControl.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace AIStudio.Wpf.DiagramDesigner.Test
+{
+    /// <summary>
+    /// Interaction logic for ToolBoxControl.xaml
+    /// </summary>
+    public partial class ToolBoxControl : UserControl
+    {
+        public ToolBoxControl()
+        {
+            InitializeComponent();
+        }
+    }
+}

AIStudio.Wpf.DiagramDesigner.Test/ViewModels/MainWindowViewModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows;
+
+namespace AIStudio.Wpf.DiagramDesigner.Test.ViewModels
+{
+    class MainWindowViewModel : BindableBase
+    {
+        public ToolBoxViewModel ToolBoxViewModel
+        {
+            get; private set;
+        }
+
+        public DiagramViewModel DiagramViewModel
+        {
+            get; private set;
+        }
+
+        protected IDiagramServiceProvider _service
+        {
+            get
+            {
+                return DiagramServicesProvider.Instance.Provider;
+            }
+        }
+
+        public MainWindowViewModel()
+        {
+            ToolBoxViewModel = new ToolBoxViewModel();
+            DiagramViewModel = new DiagramViewModel();
+            DiagramViewModel.ShowGrid = true;
+            DiagramViewModel.GridCellSize = new Size(100, 60);
+            DiagramViewModel.CellHorizontalAlignment = CellHorizontalAlignment.Center;
+            DiagramViewModel.CellVerticalAlignment = CellVerticalAlignment.Center;
+            DiagramViewModel.PageSizeType = PageSizeType.Custom;
+            DiagramViewModel.PageSize = new Size(double.NaN, double.NaN);
+
+            ConnectorViewModel.PathFinder = new OrthogonalPathFinder();
+            _service.DrawModeViewModel.VectorLineDrawMode = DrawMode.BoundaryConnectingLine;
+        }
+    }
+    
+}

AIStudio.Wpf.DiagramDesigner.Test/ViewModels/ToolBoxViewModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows.Media;
+using AIStudio.Wpf.DiagramDesigner.Helpers;
+using AIStudio.Wpf.Flowchart;
+using AIStudio.Wpf.Flowchart.Models;
+using AIStudio.Wpf.Flowchart.ViewModels;
+
+namespace AIStudio.Wpf.DiagramDesigner.Test.ViewModels
+{
+    public class ToolBoxViewModel
+    {
+        private List<ToolBoxData> toolBoxItems = new List<ToolBoxData>();
+
+        public ToolBoxViewModel()
+        {
+            toolBoxItems.Add(new FlowchartToolBoxData(NodeKinds.Start, typeof(StartFlowNode), 80, 48));
+            toolBoxItems.Add(new FlowchartToolBoxData(NodeKinds.End, typeof(EndFlowNode), 80, 48));
+            toolBoxItems.Add(new FlowchartToolBoxData(NodeKinds.Middle, typeof(MiddleFlowNode), 80, 48));
+            toolBoxItems.Add(new FlowchartToolBoxData(NodeKinds.Decide, typeof(DecideFlowNode), 80, 48));
+            toolBoxItems.Add(new FlowchartToolBoxData(NodeKinds.COBegin, typeof(COBeginFlowNode), 48, 48));
+            toolBoxItems.Add(new FlowchartToolBoxData(NodeKinds.COEnd, typeof(COEndFlowNode), 80, 48));
+        }
+
+        public List<ToolBoxData> ToolBoxItems
+        {
+            get
+            {
+                return toolBoxItems;
+            }
+        }
+    }  
+   
+}