Mapxtreme 添加自定义工具，测量距离，测量面积等等
添加相应工具
//添加自定义测量距离 mapControl.Tools.Add("DistanceTool", new CustomPolylineMapTool(true, true, true, mapControl.Viewer, mapControl.Handle.ToInt32(), mapControl.Tools, mapControl.Tools.MouseToolProperties, mapControl.Tools.MapToolProperties)); //添加自定义测量面积 mapControl.Tools.Add("AreaTool", new CustomPolygonMapTool(true, true, true, mapControl.Viewer, mapControl.Handle.ToInt32(), mapControl.Tools, mapControl.Tools.MouseToolProperties, mapControl.Tools.MapToolProperties));在工具条上添加相应的按钮，并捕捉当前按钮
/// <summary>
/// 当点击工具栏上的按钮时 /// </summary> /// <param name="sender"></param>
/// <param name="e"></param> private void mapToolBar_ButtonClick(object sender, ToolBarButtonClickEventArgs e) {
try {
string btnName = e.Button.Name; switch (btnName) { case "toolBarButtonDistanceTool"://当点击“测量距离”按钮时 mapControl.Tools.LeftButtonTool = CustomMapTools.DistanceTool; break; case "toolBarButtonAreaTool"://当点击“测量面积”按钮时 mapControl.Tools.LeftButtonTool = CustomMapTools.AreaTool; break; case "toolBarButtonFullScreen": SetFullScreen(true); break; case "toolBarButtonNormalScreen": SetFullScreen(false); break; case "toolBarButtonMapEye": SetViewMenuItemChecked(eyeUserMapControl, !鹰眼栏ToolStripMenuItem.Checked); break; default: break;
} }catch(Exception ex) { GlobalHelper.ShowError(ex.Message); } }当鼠标移到地图上的时候，相应功能开始工作
/// <summary> /// 当选择相应工具在地图控件上进行操作时 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Tools_Used(object sender, MapInfo.Tools.ToolUsedEventArgs e) { try { switch (e.ToolName) { //测量距离 case CustomMapTools.DistanceTool: switch (e.ToolStatus) { case ToolStatus.Start: dblDistance = 0; dptStart = e.MapCoordinate; break; case ToolStatus.InProgress: dblDistance += CoordSys.Distance(DistanceType.Spherical, map.Zoom.Unit, map.GetDisplayCoordSys(), dptStart, e.MapCoordinate); SetStatusStripMessage("总长度为:" + string.Format("{0:F3}", dblDistance) + " " + CoordSys.DistanceUnitAbbreviation(map.Zoom.Unit).ToString()); dptStart = e.MapCoordinate; break; case ToolStatus.End: dblDistance += CoordSys.Distance(DistanceType.Spherical, map.Zoom.Unit, map.GetDisplayCoordSys(), dptStart, e.MapCoordinate); SetStatusStripMessage("总长度为:" + string.Format("{0:F3}", dblDistance) + " " + CoordSys.DistanceUnitAbbreviation(map.Zoom.Unit).ToString()); map.Invalidate(true); break; default: break; } break; //测量面积 case CustomMapTools.AreaTool: switch (e.ToolStatus) { case ToolStatus.Start: arrlstPoints.Clear(); dptFirstPoint = e.MapCoordinate; arrlstPoints.Add(e.MapCoordinate); break; case ToolStatus.InProgress: arrlstPoints.Add(e.MapCoordinate); break; case ToolStatus.End: //构造一个闭合环 arrlstPoints.Add(e.MapCoordinate); int intCount = arrlstPoints.Count; if (intCount <= 3) { SetStatusStripMessage("请画3个以上的点形成面来测量你所要的面积"); return; } DPoint[] dptPoints = new DPoint[intCount]; for (int i = 0; i <= intCount - 1; i++) { dptPoints[i] = (DPoint)arrlstPoints[i]; } dptPoints[intCount - 1] = dptFirstPoint; //用闭合的环构造一个面 AreaUnit costAreaUnit; costAreaUnit = CoordSys.GetAreaUnitCounterpart(map.Zoom.Unit); CoordSys objCoordSys = this.map.GetDisplayCoordSys(); Polygon objPolygon = new Polygon(objCoordSys, CurveSegmentType.Linear, dptPoints); //if (objPolygon == null) // return; SetStatusStripMessage("总面积为:" + string.Format("{0:F3}", objPolygon.Area(costAreaUnit)) + " " + CoordSys.AreaUnitAbbreviation(costAreaUnit)); map.Invalidate(true); break; default: break; } break; //可以添加其他的用户自定义Tool default: break; } } catch (Exception Ex) { GlobalHelper.ShowError("测量错误:" + Ex.Message.ToString()); } }