PIE SDK矢量数据编辑事件的监听

 

1.功能简介

    通过IEditEvents接口，开发者可以监听到Editor对象的相关的事件，并且做出反应。包括Editor中开始编辑、结束编辑等操作，下面对矢量数据的编辑事件的监听功能进行介绍。

2.功能实现说明

2.1实现思路及原理说明

第一步

前提处于编辑状态，在编辑的开始和结束的时候进行触发的操作事件

2.2 核心接口与方法

接口/类

方法/属性

说明

 

 

IEditEvents

OnStartEditOperation；

开始编辑委托事件

OnStopEditOperation

结束编辑委托事件

 

IEditor

GetEditState();

获取编辑状态

StartEditOperation(string strDescription);

开始编辑操作

StopEditOperation()

结束编辑操作

2.3示例代码

项目路径

百度云盘地址下/PIE示例程序/04数据操作/07矢量数据编辑事件的监听

数据路径

 自定义即可

视频路径

百度云盘地址下/PIE视频教程/04数据操作/07矢量数据编辑事件的监听.avi

示例代码

 
  1      //要素编辑器
  2         private IEditor m_Editor = Editor.Instance;
  3         //鼠标按下起点
  4         private IPoint m_StartPoint = null;
  5         //要素
  6         private IFeature m_Feature = null;
  7         //标识符
  8         private int m_Flag = 0;
  9    //地图初始化绑定编辑监听事件
 10   private void FormMain_Load(object sender, EventArgs e)
 11         {
 12             //初始化绑定编辑监听事件
 13             IEditEvents editEvents = Editor.Instance;
 14             editEvents.OnStartEditOperation += editEvents_OnStartEditOperation;
 15             editEvents.OnStopEditOperation += editEvents_OnStopEditOperation;
 16         }
 17 //委托事件
 18         public void editEvents_OnStartEditOperation()
 19         {
 20             MessageBox.Show("开始绘制");
 21         }
 22         public void editEvents_OnStopEditOperation()
 23         {
 24             MessageBox.Show("完成绘制");
 25         }    
 26     
 27          /// <summary>
 28         /// 开始编辑
 29         /// </summary>
 30         /// <param name="sender"></param>
 31         /// <param name="e"></param>
 32         private void ToolStripMenuItem_StartEdit_Click(object sender, EventArgs e)
 33         {
 34             if (m_Editor.GetEditState() == EditState.StateNotEditing)
 35             {
 36                 MessageBox.Show("开始编辑");
 37                 m_Editor.StartEditing();
 38             }
 39         }
 40 
 41         /// <summary>
 42         /// 结束编辑
 43         /// </summary>
 44         /// <param name="sender"></param>
 45         /// <param name="e"></param>
 46         private void ToolStripMenuItem_StopEdit_Click(object sender, EventArgs e)
 47         {
 48             if (m_Editor.GetEditState() == EditState.StateEditing)
 49             {
 50                 if (MessageBox.Show("结束编辑前是否保存编辑数据", "确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.OK)
 51                 {
 52                     m_Editor.SaveEditing();//保存编辑                 
 53                 }              
 54                     m_Editor.StopEditing(true);//停止编辑                          
 55             }
 56         }
 57        /// <summary>
 58         /// 地图控件鼠标移动事件
 59         /// </summary>
 60         /// <param name="sender"></param>
 61         /// <param name="e"></param>
 62 
 63         private void mapControlMain_MouseDown(object sender, MouseEventArgs e)
 64         {
 65             if (e.Button != System.Windows.Forms.MouseButtons.Left) return;
 66 
 67             if (m_Editor.GetEditState() == EditState.StateEditing)
 68             {
 69                 m_StartPoint = mapControlMain.FocusMap.ToMapPoint(e.Location);
 70                 List<ILayer> layerList = new List<ILayer>();
 71                 int iLayerCount = mapControlMain.FocusMap.LayerCount;
 72                 if (iLayerCount > 0)
 73                 {
 74                     ILayer layer = mapControlMain.GetLayer(iLayerCount - 1);
 75                     layerList.Add(layer);
 76                     if (layer.IsValid())
 77                     {
 78                         if (layer.LayerType != LayerType.LayerTypeFeatureLayer) return;
 79 
 80                         IGeometry geometry = null;
 81                         switch (m_Flag)
 82                         {
 83                             case 2:
 84 mapControlMain.ActiveView.FocusMap.ClearSelectionFeatures();
 85                                 m_Editor.StartEditOperation("开始编辑");
 86                                 geometry = mapControlMain.TrackPolygon() as IGeometry;
 87                                geometry.SpatialReference = mapControlMain.SpatialReference;
 88 
 89                       IFeatureClass featureClass = (layer as IFeatureLayer).FeatureClass;
 90                                 m_Feature = featureClass.CreateNewFeature(); //创建Feature
 91                                 m_Feature.Geometry = geometry;
 92                                 featureClass.AddFeature(m_Feature); //添加Feature
 93                                 // featureClass.Save(); //保存 
 94                                 m_Editor.StopEditOperation();
 95                                 mapControlMain.PartialRefresh(ViewDrawPhaseType.ViewAll);//不能少                                      
 96                                 m_Flag = 0; //一定要加
 97                                 break;
 98                             default:
 99                                 break;
100                         }
101                     }
102                 }
103             }
104         }
105 
106 /// <summary>
107         /// 绘制面状要素
108         /// </summary>
109         /// <param name="sender"></param>
110         /// <param name="e"></param>
111         private void toolStripButton_DrawPolygon_Click(object sender, EventArgs e)
112         {
113             m_Flag = 2;
114         }
View Code

2.4示例截图

   

  

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原文地址：https://www.cnblogs.com/PIESat/p/10168710.html