private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
{
//屏幕坐标点转化为地图坐标点
//pPointPt = (axMapControl1.Map as IActiveView).ScreenDisplay.DisplayTransformation.ToMapPoint(e.x, e.y);
IGeometry geometry = null;
// FormSelection formSelection = new FormSelection();
if (e.button == 1)//左键
{
IActiveView pActiveView = axMapControl1.ActiveView;
IEnvelope pEnvelope = new EnvelopeClass();
switch (pMouseOperate)
{
#region 拉框放大
case "ZoomIn":
pEnvelope = axMapControl1.TrackRectangle();
//如果拉框范围为空则返回
if (pEnvelope == null || pEnvelope.IsEmpty || pEnvelope.Height == 0 || pEnvelope.Width == 0)
{
return;
}
//如果有拉框范围，则放大到拉框范围
pActiveView.Extent = pEnvelope;
pActiveView.Refresh();
break;
#endregion
#region 拉框缩小
case "ZoomOut":
pEnvelope = axMapControl1.TrackRectangle();
//如果拉框范围为空则退出
if (pEnvelope == null || pEnvelope.IsEmpty || pEnvelope.Height == 0 || pEnvelope.Width == 0)
{
return;
}
//如果有拉框范围，则以拉框范围为中心，缩小倍数为：当前视图范围/拉框范围
else
{
double dWidth = pActiveView.Extent.Width * pActiveView.Extent.Width / pEnvelope.Width;
double dHeight = pActiveView.Extent.Height * pActiveView.Extent.Height / pEnvelope.Height;
double dXmin = pActiveView.Extent.XMin -
((pEnvelope.XMin - pActiveView.Extent.XMin) * pActiveView.Extent.Width /
pEnvelope.Width);
double dYmin = pActiveView.Extent.YMin -
((pEnvelope.YMin - pActiveView.Extent.YMin) * pActiveView.Extent.Height /
pEnvelope.Height);
double dXmax = dXmin + dWidth;
double dYmax = dYmin + dHeight;
pEnvelope.PutCoords(dXmin, dYmin, dXmax, dYmax);
}
pActiveView.Extent = pEnvelope;
pActiveView.Refresh();
break;
#endregion
#region 漫游
case "Pan":
axMapControl1.Pan();
break;
#endregion
//#region 选择要素
//case "SelFeature":
// IEnvelope pEnv = mainMapControl.TrackRectangle();
// IGeometry pGeo = pEnv as IGeometry;
// //矩形框若为空，即为点选时，对点范围进行扩展
// if (pEnv.IsEmpty == true)
// {
// tagRECT r;
// r.left = e.x - 5;
// r.top = e.y - 5;
// r.right = e.x + 5;
// r.bottom = e.y + 5;
// pActiveView.ScreenDisplay.DisplayTransformation.TransformRect(pEnv, ref r, 4);
// pEnv.SpatialReference = pActiveView.FocusMap.SpatialReference;
// }
// pGeo = pEnv as IGeometry;
// mainMapControl.Map.SelectByShape(pGeo, null, false);
// mainMapControl.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
// break;
//#endregion
//#region 区域导出
//case "ExportRegion":
// //删除视图中数据
// mainMapControl.ActiveView.GraphicsContainer.DeleteAllElements();
// mainMapControl.ActiveView.Refresh();
// IPolygon pPolygon = DrawPolygon(mainMapControl);
// if (pPolygon == null) return;
// ExportMap.AddElement(pPolygon, mainMapControl.ActiveView);
// if (frmExpMap == null || frmExpMap.IsDisposed)
// {
// frmExpMap = new FormExportMap(mainMapControl);
// }
// frmExpMap.IsRegion = true;
// frmExpMap.GetGeometry = pPolygon as IGeometry;
// frmExpMap.Show();
// frmExpMap.Activate();
// break;
//#endregion
//#region 距离量算
//case "MeasureLength":
// //判断追踪线对象是否为空，若是则实例化并设置当前鼠标点为起始点
// if (pNewLineFeedback == null)
// {
// //实例化追踪线对象
// pNewLineFeedback = new NewLineFeedbackClass();
// pNewLineFeedback.Display = (mainMapControl.Map as IActiveView).ScreenDisplay;
// //设置起点，开始动态线绘制
// pNewLineFeedback.Start(pPointPt);
// dToltalLength = 0;
// }
// else //如果追踪线对象不为空，则添加当前鼠标点
// {
// pNewLineFeedback.AddPoint(pPointPt);
// }
// //pGeometry = m_PointPt;
// if (dSegmentLength != 0)
// {
// dToltalLength = dToltalLength + dSegmentLength;
// }
// break;
//#endregion
//#region 面积量算
//case "MeasureArea":
// if (pNewPolygonFeedback == null)
// {
// //实例化追踪面对象
// pNewPolygonFeedback = new NewPolygonFeedback();
// pNewPolygonFeedback.Display = (mainMapControl.Map as IActiveView).ScreenDisplay;
// ;
// pAreaPointCol.RemovePoints(0, pAreaPointCol.PointCount);
// //开始绘制多边形
// pNewPolygonFeedback.Start(pPointPt);
// pAreaPointCol.AddPoint(pPointPt, ref missing, ref missing);
// }
// else
// {
// pNewPolygonFeedback.AddPoint(pPointPt);
// pAreaPointCol.AddPoint(pPointPt, ref missing, ref missing);
// }
// break;
//#endregion
//#region 要素选择
//case "SelectFeature":
// IPoint point = new PointClass();
// IGeometry pGeometry = point as IGeometry;
// mainMapControl.Map.SelectByShape(pGeometry, null, false);
// mainMapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
// break;
//#endregion
/* #region 点选
* case "PointSel":
*
* ESRI.ArcGIS.Geometry.Point pt = new ESRI.ArcGIS.Geometry.Point();
* pt.X = e.mapX;
* pt.Y = e.mapY;
* geometry = pt as IGeometry;
* axMapControl1.Map.SelectByShape(geometry, null, false);
* axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
* MessageBox.Show("点选");
* //将当前主窗体中MapControl控件中的Map对象赋值给FormQueryByAttribute窗体的CurrentMap属性
* //formSelection.CurrentMap = axMapControl1.Map;
* //显示属性查询窗体
* // formSelection.Show();
* break;
#endregion*/
/* #region 框选
* case "RecSel":
* geometry = axMapControl1.TrackRectangle();
* axMapControl1.Map.SelectByShape(geometry, null, false);
* axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
*
* //将当前主窗体中MapControl控件中的Map对象赋值给FormQueryByAttribute窗体的CurrentMap属性
* formSelection.CurrentMap = axMapControl1.Map;
* //显示属性查询窗体
* formSelection.Show();
* break;
#endregion */
/* #region 圆选
* case "CircleSel":
* geometry = axMapControl1.TrackCircle();
* axMapControl1.Map.SelectByShape(geometry, null, false);
* axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
*
* //将当前主窗体中MapControl控件中的Map对象赋值给FormQueryByAttribute窗体的CurrentMap属性
* formSelection.CurrentMap = axMapControl1.Map;
* //显示属性查询窗体
* formSelection.Show();
* break;
#endregion*/
#region 点选
case "NTinfo":
/* ESRI.ArcGIS.Geometry.Point pt1 = new ESRI.ArcGIS.Geometry.Point();
* pt1.X = e.mapX;
* pt1.Y = e.mapY;
* axMapControl1.Map.SelectByShape(pt1.Envelope, null, false);*///不能用点，地类图斑图层都是面元素
IGeometry g = null;
IEnvelope pEnv;
IActiveView pActiveView1 = axMapControl1.ActiveView;
IMap pMap = axMapControl1.Map;
pEnv = axMapControl1.TrackRectangle();
if (pEnv.IsEmpty == true)
{
ESRI.ArcGIS.esriSystem.tagRECT r;
r.bottom = e.y + 5;
r.top = e.y - 5;
r.left = e.x - 5;
r.right = e.x + 5;
pActiveView.ScreenDisplay.DisplayTransformation.TransformRect(pEnv, ref r, 4);
pEnv.SpatialReference = pActiveView.FocusMap.SpatialReference;
}
g = pEnv as IGeometry;
axMapControl1.Map.SelectByShape(g, null, false);
axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
//获取选取的要素集
IEnumFeature pEnumFeature = axMapControl1.Map.FeatureSelection as IEnumFeature;
IFeature pFeature = pEnumFeature.Next();
while (pFeature != null)
{
//string str1 = pFeature.OID.ToString();
string str2 = pFeature.get_Value(2).ToString();
MessageBox.Show("图斑号:" + Convert.ToInt32(str2));
pFeature = pEnumFeature.Next();
if (fi == null || fi.IsDisposed)
{
fi = new FarmInfo();
fi.currentMap = axMapControl1.Map;
fi.Show();
}
fi.setTBH(Convert.ToInt32(str2));
}
break;
#endregion
default:
break;
}
}
else if (e.button == 2)
{
pMouseOperate = "";
axMapControl1.MousePointer = esriControlsMousePointer.esriPointerDefault;
}
}