/// <summary>
/// 全域导出
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnExportMap_Click(object sender, EventArgs e)
{
if (FrmExpMap == null || FrmExpMap.IsDisposed)
{
FrmExpMap = new FormExportMap(MainMapControl);
}
FrmExpMap.IsRegion = false;
FrmExpMap.GetGometry = MainMapControl.ActiveView.Extent;
FrmExpMap.Show();
FrmExpMap.Activate();
}
/// <summary>
/// 地图中鼠标按下事件监听
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MainMapControl_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
{
//屏幕坐标点转化为地图坐标点
pPointPt = (MainMapControl.Map as IActiveView).ScreenDisplay.DisplayTransformation.ToMapPoint(e.x, e.y);
if (e.button == 1)
{
IActiveView pActiveView = MainMapControl.ActiveView;
IEnvelope pEnvelope = new EnvelopeClass();
switch (pMouseOperate)
{
case "ZoomIn":
pEnvelope = MainMapControl.TrackRectangle();
// 如果拉框范围为空则返回
if (pEnvelope == null || pEnvelope.IsEmpty || pEnvelope.Height == 0 || pEnvelope.Width == 0)
{
return;
}
// 如果拉框有范围，则拉大到拉框范围
MainMapControl.ActiveView.Extent = pEnvelope;
MainMapControl.ActiveView.Refresh();
break;
case "ZoomOut":
pEnvelope = MainMapControl.TrackRectangle();
// 如果拉框范围为空则返回
if (pEnvelope == null || pEnvelope.IsEmpty || pEnvelope.Height == 0 || pEnvelope.Width == 0)
{
return;
}
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;
case "Pan":
MainMapControl.Pan();
break;
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;
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;
case "SelFeature":
IEnvelope pEnv = MainMapControl.TrackRectangle();
IGeometry pGeo = pEnv as IGeometry;
// 矩形框若为空，即为点选时，对点的范围进行扩展
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);
//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;
case "ExportRegion":
// 删除视图中的数据
MainMapControl.ActiveView.GraphicsContainer.DeleteAllElements();
MainMapControl.ActiveView.Refresh();
IPolygon polygon = DrawPolygon(MainMapControl);
if (polygon == null)
{
return;
}
ExportMap.AddElement(polygon, MainMapControl.ActiveView);
if (FrmExpMap == null || FrmExpMap.IsDisposed)
{
FrmExpMap = new FormExportMap(MainMapControl);
}
FrmExpMap.IsRegion = true;
FrmExpMap.GetGometry = polygon as IGeometry;
FrmExpMap.Show();
FrmExpMap.Activate();
break;
case "TxtSymbol":
TxtSymbol(e);
break;
default:
break;
}
}
else if (e.button == 2)
{
pMouseOperate = "";
MainMapControl.MousePointer = esriControlsMousePointer.esriPointerDefault;
}
}
