添加Avalonia项目的demo

Serein.Workbench.Avalonia/Model/ConnectingData.cs

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+using Avalonia;
+using Serein.Library;
+using Serein.Workbench.Avalonia.Custom.Views;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Serein.Workbench.Avalonia.Model
+{
+
+    /// <summary>
+    /// 节点之间连接线的相关控制方法
+    /// </summary>
+    public class ConnectingData
+    {
+        /// <summary>
+        /// 是否正在创建连线
+        /// </summary>
+        public bool IsCreateing { get; set; }
+        /// <summary>
+        /// 起始控制点
+        /// </summary>
+        public NodeJunctionView? StartJunction { get; set; }
+        /// <summary>
+        /// 当前的控制点
+        /// </summary>
+        public NodeJunctionView? CurrentJunction { get; set; }
+        /// <summary>
+        /// 开始坐标
+        /// </summary>
+        public Point StartPoint { get; set; }
+        /// <summary>
+        /// 线条样式
+        /// </summary>
+        public MyLine? TempLine { get; set; }
+
+        /// <summary>
+        /// 线条类别（方法调用）
+        /// </summary>
+        public ConnectionInvokeType ConnectionInvokeType { get; set; } = ConnectionInvokeType.IsSucceed;
+        /// <summary>
+        /// 线条类别（参数传递）
+        /// </summary>
+        public ConnectionArgSourceType ConnectionArgSourceType { get; set; } = ConnectionArgSourceType.GetOtherNodeData;
+
+        /// <summary>
+        /// 判断当前连接类型
+        /// </summary>
+        public JunctionOfConnectionType? Type => StartJunction?.JunctionType.ToConnectyionType();
+
+
+        /// <summary>
+        /// 是否允许连接
+        /// </summary>
+
+        public bool IsCanConnected
+        {
+            get
+            {
+
+                if (StartJunction is null
+                    || CurrentJunction is null
+                    )
+                {
+                    return false;
+                }
+                if(StartJunction?.MyNode is null)
+                {
+                    return false;
+                }
+                if (!StartJunction.MyNode.Equals(CurrentJunction.MyNode)
+                    && StartJunction.JunctionType.IsCanConnection(CurrentJunction.JunctionType))
+                {
+                    return true;
+                }
+                else
+                {
+                    return false;
+                }
+            }
+        }
+
+        /// <summary>
+        /// 更新临时的连接线
+        /// </summary>
+        /// <param name="point"></param>
+        public void UpdatePoint(Point point)
+        {
+            if (StartJunction is null
+                    || CurrentJunction is null
+                    )
+            {
+                return;
+            }
+            if (StartJunction.JunctionType == Library.JunctionType.Execute
+                || StartJunction.JunctionType == Library.JunctionType.ArgData)
+            {
+                TempLine?.Line.UpdateStartPoints(point);
+            }
+            else
+            {
+                TempLine?.Line.UpdateEndPoints(point);
+
+            }
+        }
+
+        /// <summary>
+        /// 重置
+        /// </summary>
+        public void Reset()
+        {
+            IsCreateing = false;
+            StartJunction = null;
+            CurrentJunction = null;
+            TempLine?.Remove();
+            ConnectionInvokeType = ConnectionInvokeType.IsSucceed;
+            ConnectionArgSourceType = ConnectionArgSourceType.GetOtherNodeData;
+        }
+
+
+
+    }
+}

Serein.Workbench.Avalonia/Model/FlowLibraryInfo.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Serein.Workbench.Avalonia.Model
+{
+    
+    internal class FlowLibraryInfo
+    {
+
+    }
+}

Serein.Workbench.Avalonia/Model/MyLine.cs

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+using Avalonia.Controls;
+using Serein.Workbench.Avalonia.Custom.Views;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Serein.Workbench.Avalonia.Model
+{
+
+    /// <summary>
+    /// 绘制的线
+    /// </summary>
+    public class MyLine
+    {
+        /// <summary>
+        /// 将线条绘制出来
+        /// </summary>
+        /// <param name="canvas">放置画布</param>
+        /// <param name="line">线的实体</param>
+        public MyLine(Canvas canvas, ConnectionLineShape line)
+        {
+            Canvas = canvas;
+            Line = line;
+            canvas?.Children.Add(line);
+        }
+
+        public Canvas Canvas { get; }
+        public ConnectionLineShape Line { get; }
+
+        /// <summary>
+        /// 移除线
+        /// </summary>
+        public void Remove()
+        {
+            Canvas?.Children.Remove(Line);
+        }
+    }
+}