private void 全域导出ToolStripMenuItem_Click(object sender, EventArgs e)
{
if (frmExpMap == null || frmExpMap.IsDisposed)
{
frmExpMap = new mapexport(axMapControl1);
}
frmExpMap.isRegion = false;//表示为全域导出
frmExpMap.geometry = axMapControl1.ActiveView.Extent;
frmExpMap.Show();
frmExpMap.Activate();
}
private void axMapControl1_OnMouseDown(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseDownEvent e)
{
IActiveView pActiveview = axMapControl1.ActiveView;
IEnvelope envelope = new EnvelopeClass();
pPointPt = axMapControl1.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(e.x, e.y);
switch (mousedownname)
{
case "":
break;
case "zoomin": //拉框放大
envelope = axMapControl1.TrackRectangle(); //获取拉框信息
if (envelope == null || envelope.IsEmpty || envelope.Height == 0 || envelope.Width == 0) //判断是否为空框
{
return;
}
pActiveview.Extent = envelope;
pActiveview.Refresh();
break;
case "zoomout": //拉框缩小
envelope = axMapControl1.TrackRectangle();
if (envelope == null || envelope.IsEmpty || envelope.Height == 0 || envelope.Width == 0)
{
return;
}
double dwidth = pActiveview.Extent.Width * pActiveview.Extent.Width / envelope.Width;
double dheight = pActiveview.Extent.Height * pActiveview.Extent.Height / envelope.Height;
double dXmin = pActiveview.Extent.XMin - ((envelope.XMin - pActiveview.Extent.XMin) * pActiveview.Extent.Width / envelope.Width);
double dYmin = pActiveview.Extent.YMin - ((envelope.YMin - pActiveview.Extent.YMin) * pActiveview.Extent.Height / envelope.Height);
double dxMAX = dXmin + dwidth;
double dyMAX = dYmin + dheight;
envelope.PutCoords(dXmin, dYmin, dxMAX, dyMAX);
pActiveview.Extent = envelope;
pActiveview.Refresh();
break;
case "manyou": //漫游
axMapControl1.Pan();
break;
case "MeasureLength": //长度量测
if (pNewLineFeedback == null)
{
pNewLineFeedback = new NewLineFeedback {
Display = pActiveview.ScreenDisplay
}; //实例化追踪线对象
pNewLineFeedback.Start(pPointPt); //设置起点，开始动态绘制
dToltaLength = 0;
}
else //如果追踪线对象不为空，则添加当前鼠标点
{
pNewLineFeedback.AddPoint(pPointPt);
}
if (dSegmentLength != 0)
{
dToltaLength = dToltaLength + dSegmentLength;
}
break;
case "MeasureArea": //面积量测
if (pNewPolygonFeedback == null)
{
pNewPolygonFeedback = new NewPolygonFeedback {
Display = pActiveview.ScreenDisplay
}; //实例化面对象
pAreaPointCollection.RemovePoints(0, pAreaPointCollection.PointCount); //清空点集
pNewPolygonFeedback.Start(pPointPt); //开始绘制多边形
pAreaPointCollection.AddPoint(pPointPt, ref missing, ref missing);
}
else
{
pNewPolygonFeedback.AddPoint(pPointPt);
pAreaPointCollection.AddPoint(pPointPt, ref missing, ref missing);
}
break;
case "selectfeature": //要素选择
IEnvelope pEnv = axMapControl1.TrackRectangle();
IGeometry pGeo = pEnv;
if (pEnv.IsEmpty) //若为空则在鼠标当前点进行选择部分区域作为框
{
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;
axMapControl1.Map.SelectByShape(pGeo, null, false);
axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
break;
case "ExportRegion":
pActiveview.GraphicsContainer.DeleteAllElements();
pActiveview.Refresh();
IPolygon pPolygon = ExportMap.DrawPolygon(axMapControl1);
if (pPolygon == null)
{
return;
}
ExportMap.AddElement(pPolygon, pActiveview);
if (frmExpMap == null || frmExpMap.IsDisposed)
{
frmExpMap = new mapexport(axMapControl1);
}
frmExpMap.isRegion = true;
frmExpMap.geometry = pPolygon;
frmExpMap.Show();
frmExpMap.Activate();
break;
}
}