/// <summary>
/// Select all features in all visible and selectable layers near a given point using a given pixel tolerance.
/// </summary>
/// <remarks>This method searches all features near a given point in all visible and selectable layers and then updates the
/// default selection.
/// </remarks>
/// <param name="mapAlias">MapAlias of the map.</param>
/// <param name="point">Point in pixels.</param>
/// <param name="pixelTolerance">Pixel tolerance.</param>
public void PointSelection(string mapAlias, System.Drawing.Point point, int pixelTolerance)
{
Map map = GetMapObj(mapAlias);
// Do the search and show selections
SearchInfo si = MapInfo.Mapping.SearchInfoFactory.SearchNearest(map, point, pixelTolerance);
(si.SearchResultProcessor as ClosestSearchResultProcessor).Options = ClosestSearchOptions.StopAtFirstMatch;
MapInfo.Geometry.Distance d = MapInfo.Mapping.SearchInfoFactory.ScreenToMapDistance(map, pixelTolerance);
(si.SearchResultProcessor as ClosestSearchResultProcessor).DistanceUnit = d.Unit;
(si.SearchResultProcessor as ClosestSearchResultProcessor).MaxDistance = d.Value;
Session.Current.Selections.DefaultSelection.Clear();
IMapLayerFilter _selFilter = MapLayerFilterFactory.FilterForTools(
map, MapLayerFilterFactory.FilterByLayerType(LayerType.Normal), MapLayerFilterFactory.FilterVisibleLayers(true),
"MapInfo.Tools.MapToolsDefault.SelectLayers", null);
ITableEnumerator table = map.Layers.GetTableEnumerator(_selFilter);
if (table != null) // null will be returned is select enabled layer is not visible, thus non-selectable
{
Session.Current.Catalog.Search(table, si, Session.Current.Selections.DefaultSelection, ResultSetCombineMode.AddTo);
}
}
private void FindCity()
{
Find find = null;
try
{
MapInfo.Mapping.Map map = null;
// Get the map
if (MapInfo.Engine.Session.Current.MapFactory.Count == 0 ||
(map = MapInfo.Engine.Session.Current.MapFactory[MapControl1.MapAlias]) == null)
{
return;
}
// Do the find
MapInfo.Mapping.FeatureLayer findLayer = (MapInfo.Mapping.FeatureLayer)map.Layers[_findLayerName];
find = new Find(findLayer.Table, findLayer.Table.TableInfo.Columns[_findColumnName]);
FindResult result = find.Search(DropDownList1.SelectedItem.Text);
if (result.ExactMatch)
{
// Create a Feature (point) for the location we found
CoordSys csys = findLayer.CoordSys;
FeatureGeometry g = new MapInfo.Geometry.Point(csys, result.FoundPoint.X, result.FoundPoint.Y);
Feature f = new Feature(g, new MapInfo.Styles.SimpleVectorPointStyle(52, System.Drawing.Color.DarkGreen, 32));
// Delete the existing find object and add the new one
MapInfo.Mapping.FeatureLayer workingLayer = (MapInfo.Mapping.FeatureLayer)map.Layers[_workingLayerName];
if (workingLayer != null)
{
(workingLayer.Table as ITableFeatureCollection).Clear();
workingLayer.Table.InsertFeature(f);
}
// Set the map's center and zooom
map.Center = new DPoint(result.FoundPoint.X, result.FoundPoint.Y);
MapInfo.Geometry.Distance d = new MapInfo.Geometry.Distance(1000, map.Zoom.Unit);
map.Zoom = d;
}
else
{
this.Label3.Text = ("Cannot find the country");
}
find.Dispose();
}
catch (Exception)
{
if (find != null)
{
find.Dispose();
}
}
}
public override void Process()
{
MapControlModel model = MapControlModel.GetModelFromSession();
model.SetMapSize(MapAlias, MapWidth, MapHeight);
MapInfo.Mapping.Map map = model.GetMapObj(MapAlias);
if (map == null)
{
return;
}
MapInfo.Geometry.Distance savezoom = map.Zoom;
map.Zoom = new MapInfo.Geometry.Distance(savezoom.Value * 4, savezoom.Unit);
if (ExportFormat == "undefined")
{
ExportFormat = "Gif";
}
System.IO.MemoryStream ms = model.GetMap(MapAlias, MapWidth, MapHeight, ExportFormat);
StreamImageToClient(ms);
map.Zoom = savezoom;
/*
* MapControlModel model = MapControlModel.GetModelFromSession();
* Map oMap = model.GetMapObj(MapAlias);
* if (oMap == null)
* {
* return;
* }
*
* MapInfo.Geometry.Distance zoom = oMap.Zoom;
* zoom = new MapInfo.Geometry.Distance(zoom.Value * 4, zoom.Unit );
* oMap.Zoom = zoom;
* if (ExportFormat == "undefined" )
* {
* ExportFormat = "Gif";
* }
* System.IO.MemoryStream ms = model.GetMap(MapAlias, MapWidth, MapHeight, ExportFormat);
* StreamImageToClient(ms);
* zoom = new MapInfo.Geometry.Distance(zoom.Value / 4, zoom.Unit);
* oMap.Zoom = zoom;
*/
}
private void FindCity()
{
Find find = null;
try
{
MapInfo.Mapping.Map map = null;
// Get the map
if (MapInfo.Engine.Session.Current.MapFactory.Count == 0 ||
(map = MapInfo.Engine.Session.Current.MapFactory[MapControl1.MapAlias]) == null)
{
return;
}
// Do the find
MapInfo.Mapping.FeatureLayer findLayer = (MapInfo.Mapping.FeatureLayer) map.Layers[_findLayerName];
find = new Find(findLayer.Table, findLayer.Table.TableInfo.Columns[_findColumnName]);
FindResult result = find.Search(DropDownList1.SelectedItem.Text);
if (result.ExactMatch)
{
// Create a Feature (point) for the location we found
CoordSys csys = findLayer.CoordSys;
FeatureGeometry g = new MapInfo.Geometry.Point(csys, result.FoundPoint.X, result.FoundPoint.Y);
Feature f = new Feature(g, new MapInfo.Styles.SimpleVectorPointStyle(52, System.Drawing.Color.DarkGreen, 32));
// Delete the existing find object and add the new one
MapInfo.Mapping.FeatureLayer workingLayer = (MapInfo.Mapping.FeatureLayer)map.Layers[_workingLayerName];
if (workingLayer != null)
{
(workingLayer.Table as ITableFeatureCollection).Clear();
workingLayer.Table.InsertFeature(f);
}
// Set the map's center and zooom
map.Center = new DPoint(result.FoundPoint.X, result.FoundPoint.Y);
MapInfo.Geometry.Distance d = new MapInfo.Geometry.Distance(1000, map.Zoom.Unit);
map.Zoom = d;
}
else
{
this.Label3.Text = ("Cannot find the country");
}
find.Dispose();
}
catch (Exception)
{
if (find != null) find.Dispose();
}
}
