整理一下项目文件

AIStudio.Wpf.DiagramDesigner/UserControls/ConnectorContainer.xaml.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.Specialized;
+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;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    /// <summary>
+    /// Interaction logic for ConnectorContainer.xaml
+    /// </summary>
+    public partial class ConnectorContainer : ItemsControl
+    {
+        private Canvas rootCanvas;
+        public ConnectorContainer()
+        {
+            InitializeComponent();
+            ((INotifyCollectionChanged)Items).CollectionChanged += ConnectorContainer_CollectionChanged;
+        }
+
+        void ConnectorContainer_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
+        {
+            if (e.Action == NotifyCollectionChangedAction.Add)
+            {
+                foreach(var item in e.NewItems)
+                {
+                    FullyCreatedConnectorInfo vm = item as FullyCreatedConnectorInfo;
+                    var connector = ItemContainerGenerator.ContainerFromItem(item) as ContentPresenter;
+
+                    Canvas.SetLeft(connector, vm.DataItem.ItemWidth * vm.XRatio - vm.ConnectorWidth / 2);
+                    Canvas.SetTop(connector, vm.DataItem.ItemHeight * vm.YRatio - vm.ConnectorHeight / 2);
+                }
+                //SetConnectorLocation();
+            }
+        }
+
+         void ConnectorContainer_SizeChanged(object sender, SizeChangedEventArgs e)
+        {
+            SetConnectorLocation();
+        }
+
+         private void rootCanvas_Loaded(object sender, RoutedEventArgs e)
+         {
+             rootCanvas = sender as Canvas;
+             SetConnectorLocation();
+             SizeChanged += ConnectorContainer_SizeChanged;
+         }
+
+         private void SetConnectorLocation()
+         {
+            foreach (var connector in rootCanvas.Children.OfType<ContentPresenter>())
+            {
+                var vm = connector.DataContext as FullyCreatedConnectorInfo;
+                if (vm != null)
+                {
+                    Canvas.SetLeft(connector, vm.DataItem.ItemWidth * vm.XRatio - vm.ConnectorWidth / 2);
+                    Canvas.SetTop(connector, vm.DataItem.ItemHeight * vm.YRatio - vm.ConnectorHeight / 2);
+                }
+            }
+        }
+    }
+}