两个类对MapXtrme2004 asp.net鹰眼功能进行了完全的封装

用法: 

 private void Page_Load(object sender, System.EventArgs e)
  {
   // 在此处放置用户代码以初始化页面

    Overview oc = new Overview(MapControl1,MapControl2);
           if(!IsPostBack)
          {
              
              
           }
  }
 

/*作者:xiexiaokui
 * 时间:2005-10-18
 * 功能:asp.net鹰眼
 */
using System;
using MapInfo.Web.UI.WebControls;
using MapInfo.Geometry;
using MapInfo.Styles;
using System.Drawing;
using MapInfo.Data;
 
    //// <summary>
    /// OverviewTool 的摘要说明。
     /// </summary>
public class OverviewMapToolEventArgs:System.EventArgs
{
 System.Drawing.Point[] m_points;
 public OverviewMapToolEventArgs(System.Drawing.Point[] points)
 {
  this.m_points = points;
 }
 
 public System.Drawing.Point[] Points
 {
  get
  {
   return m_points;
  }
  set
  {
   m_points = value;
  }
 }
}
 
public delegate void OverviewMapToolEventHandler(object sender,OverviewMapToolEventArgs e);
 
 
public class OverviewMapTool:MapTool
{
 public static readonly string Toolname = "MapInfoWebOverview";
 //    public DPoint Point1,Point2;
 
 string m_clientCodeSource;
 string m_clientStartMethod;
 string m_clientStopMethod;
 string m_cursorUrl;
 string m_name;
 
 
 public event OverviewMapToolEventHandler OverviewMapToolStop;
 
 protected void OnOverviewMapToolStop(OverviewMapToolEventArgs e)
 {
  if(this.OverviewMapToolStop != null)
   this.OverviewMapToolStop(this,e);
 }
 
 public OverviewMapTool()
 {
  this.ClientStartMethod = "MapInfoWebRectangleStart";
  this.ClientStopMethod = "MapInfoWebRectangleStop";
  this.Name = Toolname;
 }
 public override string ClientCodeSource
 {
  get
  {
   return m_clientCodeSource;
  }
  set
  {
   m_clientCodeSource = value;
  }
 }
 
 public override string ClientStartMethod
 {
  get
  {
   return m_clientStartMethod;
  }
  set
  {
   m_clientStartMethod = value;
  }
 }
 public override string ClientStopMethod
 {
  get
  {
   return m_clientStopMethod;
  }
  set
  {
   m_clientStopMethod = value;
  }
 }
 public override string CursorUrl
 {
  get
  {
   return m_cursorUrl;
  }
  set
  {
   m_cursorUrl = value;
  }
 }
 public override string Name
 {
  get
  {
   return m_name;
  }
  set
  {
   m_name = value;
  }
 }


 public override void Execute(string dataString, System.Collections.ArrayList selLayers, MapInfo.Mapping.Map map)
 {
      
  //    DPoint dp1,dp2;
  System.Drawing.Point[] points = base.ExtractPoints(dataString);
  //    map.DisplayTransform.FromDisplay(points[0],out dp1);
  //    map.DisplayTransform.FromDisplay(points[1],out dp2);
   
  
  this.OnOverviewMapToolStop(new OverviewMapToolEventArgs(points));
  //    OverviewMapTool omt = (OverviewMapTool)this.MapControl2.MapTools[MapControl2.MapTools.Count-1];
  //    MapInfo.Geometry.DPoint dp1 = omt.Point1;
  //    MapInfo.Geometry.DPoint dp2 = omt.Point2;
  //    System.Drawing.Point p1,p2;

  //    MapControl2.Map.DisplayTransform.ToDisplay(dp1,out p1);
  //    MapControl2.Map.DisplayTransform.ToDisplay(dp2,out p2);
  //        if(Math.Min(Math.Abs(points[0].X-points[1].X),Math.Abs(points[0].Y-points[1].Y))<5)
  //        {
  //            m_mainMapControl.Map.Center = dp1;
  //        }
  //        else
  //        {
  //            MapInfo.Geometry.DRect rect = new DRect(dp1,dp2);
  //            m_mainMapControl.Map.SetView(rect,m_mainMapControl.Map.GetDisplayCoordSys());
  //        }

 }


}
class Overview
{
   
 MapInfo.Web.UI.WebControls.MapControl m_mainMapControl;
 MapInfo.Web.UI.WebControls.MapControl m_overviewMapControl;
 public Overview(MapInfo.Web.UI.WebControls.MapControl mainMapControl,MapInfo.Web.UI.WebControls.MapControl overviewMapControl)
 {
  MainMapControl = mainMapControl;
  OverviewMapControl = overviewMapControl;
 }

 public MapInfo.Web.UI.WebControls.MapControl MainMapControl
 {
  get
  {
   return m_mainMapControl;
  }
  set
  {
   m_mainMapControl = value;
   m_mainMapControl.PreRender += new EventHandler(MainMapControl_PreRender);
  }
 }
 public MapInfo.Web.UI.WebControls.MapControl OverviewMapControl
 {
  get
  {
   return m_overviewMapControl;
  }
  set
  {
   MapInfo.Data.Table table = MapInfo.Engine.Session.Current.Catalog.GetTable("temp_overview");
   m_overviewMapControl = value;
   OverviewMapTool omt = new OverviewMapTool();
   omt.OverviewMapToolStop += new OverviewMapToolEventHandler(omt_OverviewMapToolStop);
   this.m_overviewMapControl.MapTools.Add(omt);
   this.m_overviewMapControl.MapTools.CurrentTool = omt.Name;
   if(table == null)
   {
    this.m_overviewMapControl.Map.Load(new MapInfo.Mapping.MapTableLoader(m_mainMapControl.Map.Layers.GetTableEnumerator()));
    MapInfo.Data.TableInfo ti = MapInfo.Data.TableInfoFactory.CreateTemp("temp_overview");
    MapInfo.Data.TableSessionInfo tsi = new MapInfo.Data.TableSessionInfo();

    table = MapInfo.Engine.Session.Current.Catalog.CreateTable(ti);

    MapInfo.Mapping.FeatureLayer fl = new MapInfo.Mapping.FeatureLayer(table);
    m_overviewMapControl.Map.Layers.Insert(0,fl);
   }
           
  }
 }
 protected void MainMapControl_PreRender(object sender, EventArgs e)
 {
       
  DRect dr = this.m_mainMapControl.Map.Bounds;
  FeatureGeometry fg = new MapInfo.Geometry.Rectangle(m_mainMapControl.Map.GetDisplayCoordSys(),dr);
  MapInfo.Styles.SimpleLineStyle sls = new MapInfo.Styles.SimpleLineStyle(new LineWidth(2,LineWidthUnit.Pixel),2,Color.Red);
  MapInfo.Styles.SimpleInterior si = new MapInfo.Styles.SimpleInterior(1);
  MapInfo.Styles.AreaStyle arst = new MapInfo.Styles.AreaStyle(sls,si);
  //    MapInfo.Styles.CompositeStyle cs = new MapInfo.Styles.CompositeStyle(arst,null,null,null);
  MapInfo.Styles.CompositeStyle cs = new MapInfo.Styles.CompositeStyle(arst);
  MapInfo.Data.Feature f = new Feature(fg,arst);

  MapInfo.Data.Table table = MapInfo.Engine.Session.Current.Catalog.GetTable("temp_overview");
  (table as ITableFeatureCollection).Clear();
  table.InsertFeature(f);
           
  m_overviewMapControl.Map.Layers["temp_overview"].Invalidate();
  //table.Refresh();
       
 }

 private void omt_OverviewMapToolStop(object sender, OverviewMapToolEventArgs e)
 {
  DPoint dp1,dp2;
  System.Drawing.Point[] points = e.Points;
  m_overviewMapControl.Map.DisplayTransform.FromDisplay(points[0],out dp1);
  m_overviewMapControl.Map.DisplayTransform.FromDisplay(points[1],out dp2);
  //    OverviewMapTool omt = (OverviewMapTool)this.MapControl2.MapTools[MapControl2.MapTools.Count-1];
  //    MapInfo.Geometry.DPoint dp1 = omt.Point1;
  //    MapInfo.Geometry.DPoint dp2 = omt.Point2;
  //    System.Drawing.Point p1,p2;

  //    MapControl2.Map.DisplayTransform.ToDisplay(dp1,out p1);
  //    MapControl2.Map.DisplayTransform.ToDisplay(dp2,out p2);
  if(Math.Min(Math.Abs(points[0].X-points[1].X),Math.Abs(points[0].Y-points[1].Y))<5)
  {
   m_mainMapControl.Map.Center = dp1;
  }
  else
  {
   MapInfo.Geometry.DRect rect = new DRect(dp1,dp2);
   m_mainMapControl.Map.SetView(rect,m_mainMapControl.Map.GetDisplayCoordSys());
  }
 }

}

posted on 2010-03-19 16:42  carekee  阅读(396)  评论(0编辑  收藏  举报