添加项目文件。

MetroGauges/Controls/GeoWidget.xaml.cs

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+using netDxf;
+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;
+
+namespace MetroGauges.Controls
+{
+    /// <summary>
+    /// GeoWidget.xaml 的交互逻辑
+    /// </summary>
+    public partial class GeoWidget : UserControl
+    {
+        private string m_BlockPath;
+        private DesignControl m_designCtrl;
+        public DesignControl DesignCtrl {
+
+            get
+            {
+                return m_designCtrl;
+            }
+        }
+
+        public string BlockName { get; set; }
+
+        
+
+        public GeoWidget()
+        {
+            InitializeComponent();
+            this.MouseLeftButtonUp += GeoWidget_MouseLeftButtonUp;  //拦截，不拦截会影响到画布拖动。
+            this.Loaded += GeoWidget_Loaded;
+
+            m_BlockPath = AppDomain.CurrentDomain.BaseDirectory + "Blocks\\";
+        }
+
+        private void GeoWidget_Loaded(object sender, RoutedEventArgs e)
+        {
+            m_designCtrl = this.geoThumb.Template.FindName("designCtrl", this.geoThumb) as DesignControl;
+            m_designCtrl.CancelMove = true;
+            m_designCtrl.ScaleVisble = false;
+
+            //LoadBlockData();
+        }
+
+
+        private void GeoWidget_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
+        {
+            e.Handled = true;
+        }
+
+
+        public void LoadBlockData()
+        {
+            DxfDocument dxf = DxfDocument.Load(m_BlockPath + BlockName+".dxf");
+            if (dxf.Blocks.Count > 0 && dxf.Blocks.Contains(BlockName))
+            {
+                netDxf.Blocks.Block block = dxf.Blocks[BlockName];
+                foreach (netDxf.Entities.EntityObject item in block.Entities)
+                {
+                    switch (item.Type.ToString())
+                    {
+                        case "Line":
+                            AddLine(item);
+                            break;
+                        case "Polyline":
+                        case "LightWeightPolyline":
+                            AddPolyline(item);
+                            break;
+                    }
+                }
+            }
+            else
+            {
+                MessageBox.Show("找不到块数据", "错误");
+            }
+        }
+
+        public void AddLine(netDxf.Entities.EntityObject line)
+        {
+            double xyRate = this.m_designCtrl.ScaleRale;
+            Line drawline = new Line();
+            netDxf.Entities.Line dataLine = line as netDxf.Entities.Line;
+            drawline.X1 = dataLine.StartPoint.X / xyRate;
+            drawline.Y1 = -dataLine.StartPoint.Y / xyRate;
+
+            drawline.X2 = dataLine.EndPoint.X / xyRate;
+            drawline.Y2 = -dataLine.EndPoint.Y / xyRate;
+
+            drawline.Stroke = Brushes.White;
+            drawline.StrokeThickness = 1;
+            m_designCtrl.canvasDesign.Children.Add(drawline);
+            
+        }
+        public void AddPolyline(netDxf.Entities.EntityObject line)
+        {
+            double xyRate = this.m_designCtrl.ScaleRale;
+            PointCollection ptcol = new PointCollection();
+            switch (line.Type.ToString())
+            {
+                case "Polyline":
+                    netDxf.Entities.Polyline polyline = line as netDxf.Entities.Polyline;
+                    foreach (netDxf.Entities.PolylineVertex item in polyline.Vertexes)
+                    {
+                        ptcol.Add(new Point() { X = item.Location.X / xyRate, Y = -item.Location.Y / xyRate });
+                    }
+                    break;
+                case "LightWeightPolyline":
+                    netDxf.Entities.LwPolyline lwline = line as netDxf.Entities.LwPolyline;
+                    foreach (var item in lwline.Vertexes)
+                    {
+                        ptcol.Add(new Point() { X = item.Location.X / xyRate, Y = -item.Location.Y / xyRate });
+                    }
+                    if (lwline.IsClosed)
+                    {
+                        Vector2 last = lwline.Vertexes[0].Location;
+                        ptcol.Add(new Point() { X = last.X / xyRate, Y = -last.Y / xyRate });
+                    }
+                    break;
+            }
+            Polyline pl = new Polyline
+            {
+                Stroke = Brushes.White,
+                StrokeThickness = 1,
+                Points = ptcol,
+            };
+            
+            this.m_designCtrl.canvasDesign.Children.Add(pl);
+        }
+        public void AddCircle(Ellipse circle)
+        {
+            m_designCtrl.canvasDesign.Children.Add(circle);
+        }
+        public void AddRectangle(Rectangle rectangle)
+        {
+            m_designCtrl.canvasDesign.Children.Add(rectangle);
+        }
+        public  void AddText1(String text)
+        {
+            TextBlock textBlock = new TextBlock();
+            textBlock.Text = text;
+            textBlock.Foreground = Brushes.White;
+            m_designCtrl.canvasDesign.Children.Add(textBlock);
+        }
+        /// <summary>
+        /// 移动控件
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void geoThumb_DragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
+        {
+            double X = Canvas.GetLeft(this);
+            double Y = Canvas.GetTop(this);
+            Canvas.SetLeft(this, X + e.HorizontalChange);
+            Canvas.SetTop(this, Y + e.VerticalChange);
+            //isMoved = true;
+        }
+    }
+}