| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

*

* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

*

* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* as published by the Free Software Foundation; either version 2

* of the License, or (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program; if not, write to the Free Software

* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

*

* For more information, contact:

*

*  Generalitat Valenciana

*   Conselleria d'Infraestructures i Transport

*   Av. Blasco Ib??ez, 50

*   46010 VALENCIA

*   SPAIN

*

*      +34 963862235

*   gvsig@gva.es

*      www.gvsig.gva.es

*

*    or

*

*   IVER T.I. S.A

*   Salamanca 50

*   46005 Valencia

*   Spain

*

*   +34 963163400

*   dac@iver.es

*/

package com.iver.cit.gvsig.gui.toolListeners;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import javax.swing.JScrollBar;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.fmap.DriverException;

import com.iver.cit.gvsig.fmap.MapControl;

import com.iver.cit.gvsig.fmap.ViewPort;

import com.iver.cit.gvsig.fmap.layers.FLayer;

import com.iver.cit.gvsig.fmap.layers.FLayers;

import com.iver.cit.gvsig.fmap.layers.FLyrRaster;

import com.iver.cit.gvsig.fmap.tools.SelectImageListenerImpl;

import com.iver.cit.gvsig.fmap.tools.Events.PointEvent;

import com.iver.cit.gvsig.project.documents.view.gui.View;

/**

* Extensi?n de la clase SelectImageListenerImple de FMap. Esta clase 

* permite capturar el evento de la selecci?n de un punto sobre la vista

* . Controlara que capa de la pila que est? visible cae dentro del punto

* seleccionado poniendo esta capa como activa. En caso de que haya varias 

* capas visibles sobre ese punto, pondr? como activa la capa superior. 

*

* @author Nacho Brodin <brodin_ign@gva.es>

*/

public class SelectImageListener extends SelectImageListenerImpl {

        FLyrRaster                         layer = null;

        Rectangle2D extentLayer = null;

        /**

         * Contructor 

         * @param mapCtrl

         */

        public SelectImageListener(MapControl mapCtrl) {

                super(mapCtrl);

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.PointListener#point(com.iver.cit.gvsig.fmap.tools.Events.PointEvent)

         */

        public void point(PointEvent event) {

                super.point(event);

                Point2D pointSelect = event.getPoint();

                if (PluginServices.getMainFrame() != null)

                    PluginServices.getMainFrame().enableControls();

                ViewPort vp = mapCtrl.getMapContext().getViewPort();

                wcPoint = vp.toMapPoint((int)pointSelect.getX(), (int)pointSelect.getY());

                FLayers layers = mapCtrl.getMapContext().getLayers();

                for(int i=0;i<layers.getLayersCount();i++)

                        layers.getLayer(i).setActive(false);

                boolean firstLayer = false;

                for(int i=layers.getLayersCount()-1;i>=0;i--){

                        if (select(layers.getLayer(i),i)) break;

                }                

        }

        private boolean select(FLayer layer,int pos){

                if (layer instanceof FLayers){

                        FLayers laux=(FLayers)layer;

                        for (int j=laux.getLayersCount()-1;j>=0;j--){

                                if (select(laux.getLayer(j),j)){

                                        return true;

                                }

                        }

                }else{

                try{

                        extentLayer = layer.getFullExtent();

                }catch(DriverException exc){

                        exc.printStackTrace();

                }

                if(        extentLayer.getMaxX() >= wcPoint.getX() &&

                        extentLayer.getMinX() <= wcPoint.getX() &&

                        extentLayer.getMaxY() >= wcPoint.getY() &&

                        extentLayer.getMinY() <= wcPoint.getY() &&

                        layer.isVisible() &&

                        layer instanceof FLyrRaster){

                        layer.setActive(true);

                        View view = (View) PluginServices.getMDIManager().getActiveWindow();

                        JScrollBar verticalBar = view.getTOC().getJScrollPane().getVerticalScrollBar();

                        double widthPerEntry = verticalBar.getMaximum()/layer.getMapContext().getLayers().getLayersCount();

                        verticalBar.setValue((int)widthPerEntry*(layer.getMapContext().getLayers().getLayersCount()-pos-1));

                        return true;

                }        

                }

                return false;

        }

}