Re: [Geotools-gt2-users] HowToSelectByMouse

[Martin D. <mar...@te...>]

Anusorn Swasdee a =E9crit :

> 1. Could you please tell me where to look for
> selecting feature by using mouse.I've looked in "map"
> and "map.event" but only found about layer change.

If you are using J2D renderer, you can process as below:

- Register a java.awt.event.MouseListener into MapPane.

- Overrides the following method in MouseEvent:

   public void mouseClicked(MouseEvent event) {
       GeoMouseEvent e =3D (GeoMouseEvent) event;
       // do the rest of the processing here
   }

   where GeoMouseEvent is defined in org.geotools.renderer.j2d.

- Call the 'getMapCoordinate' method in order to get the
   coordinate in the map coordinate system.

- If you are looking for a geometry, you can call the
   'getGeometries(coordinatePoint)' method in the
   org.geotools.renderer.geom.GeometryCollection class.
   If you are looking for a mark, I'm less familiar with
   this part if the mark was not rendered with RenderedMarks...


	Martin.