| gvSIG desktop 1

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

 *

 * Copyright (C) 2007 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.

 */

package org.gvsig.rastertools.selectrasterlayer;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import javax.swing.JScrollBar;

import org.gvsig.fmap.layers.FLyrRasterSE;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.exceptions.expansionfile.ExpansionFileReadException;

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 (nachobrodin@gmail.com)

*/

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);

                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(ReadDriverException exc) {

                                exc.printStackTrace();

                        } catch (ExpansionFileReadException e) {

                                e.printStackTrace();

                        }

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

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

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

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

                                layer.isVisible() &&

                                layer instanceof FLyrRasterSE) {

                                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;

        }

}