/// <summary>Zoom to the selected shape(s)</summary>
/// <param name = "selectedRows">A collection of the selected rows.</param>
/// <param name = "shapeFile">The current shapefile.</param>
public void ZoomToSelected(DataGridViewSelectedRowCollection selectedRows, Shapefile shapeFile)
{
try
{
double maxX = double.MinValue;
double maxY = double.MinValue;
double minX = double.MaxValue;
double minY = double.MaxValue;
var layer = _context.Layers.Current;
if (layer == null || layer.FeatureSet == null)
{
return;
}
layer.Visible = true;
foreach (DataGridViewRow row in selectedRows)
{
var ext = shapeFile.QuickExtents(Convert.ToInt32(row.Cells[0].Value));
maxX = ext.xMax > maxX ? ext.xMax : maxX;
maxY = ext.yMax > maxY ? ext.yMax : maxY;
minX = ext.xMin < minX ? ext.xMin : minX;
minY = ext.yMin < minY ? ext.yMin : minY;
}
// Pad extents now
double dx = PadExtentsSelected(maxX, minX);
maxX = maxX + dx;
minX = minX - dx;
double dy = PadExtentsSelected(maxY, minY);
maxY = maxY + dy;
minY = minY - dy;
var exts = new Extents();
if (layer.FeatureSet.NumSelected == 1 && layer.FeatureSet.PointOrMultiPoint)
{
var sf = layer.FeatureSet.InternalObject as Shapefile;
if (sf != null)
{
double xpad = (1 / 100) * (sf.Extents.xMax - sf.Extents.xMin);
double ypad = (1 / 100) * (sf.Extents.yMax - sf.Extents.yMin);
exts.SetBounds(minX + xpad, minY - ypad, 0, maxX - xpad, maxY + ypad, 0);
}
}
else
{
exts.SetBounds(minX, minY, 0, maxX, maxY, 0);
}
var map = Map;
map.Extents = exts;
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Error in ZoomToSelected: {0}", ex.Message));
}
}
