| 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.Component;

import java.awt.geom.Point2D;

import javax.swing.JOptionPane;

import com.iver.andami.PluginServices;

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

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

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

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

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

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

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

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

import com.iver.cit.gvsig.gui.View;

import com.iver.cit.gvsig.gui.Dialogs.GeoreferencingDialog;

import com.iver.cit.gvsig.gui.Panels.SelectFilePanel;

import com.iver.cit.gvsig.gui.Panels.SelectPointsPanel;

/**

 * <p>Extensi?n de la clase GeorefPointerListenerImpl de FMap para poder llamar a m?todos de

 * andami o de gvSIG.</p>

 * <p>Este listener salva puntos clickeados desde una vista sobre una capa de puntos.</p>

 * 

 * @author Nacho Brodin (brodin_ign@gva.es)

 */

public class GeorefPointerListener extends GeorefPointerListenerImpl {

        private GeoreferencingDialog dialog = null;

        private View theView = null;

        private FLyrPoints lyrPoints = null;

        private FLyrGeoRaster lyrGeoRaster = null;

        /**

        * true si se va a seleccionar el primer punto y false si se selecciona el segundo.

        * 

        */

        public static boolean firstPoint = true;

        /**

         * Posici?n del punto a ser seleccionado. 

         */

        public static int posPoint = -1;

        /**

         * Constructor

         *

         * @param mapCtrl

         */

        public GeorefPointerListener(GeoreferencingDialog dialog) {

                super();

                this.dialog = dialog;

        }

        /**

         * Captura de puntos sobre una capa FlyrPoint

         *

         * @param event Evento de un punto sobre la vista

         *

         * @throws BehaviorException

         */

        public void point(PointEvent event) throws BehaviorException {

                super.point(event);

                theView = (View) PluginServices.getMDIManager().getActiveView();

                //Obtenemos la capa de puntos y la capa de georaster

                for(int i=0;i<theView.getMapControl().getMapContext().getLayers().getLayersCount();i++){

                        FLayer lyr = theView.getMapControl().getMapContext().getLayers().getLayer(i);

                        if(lyr instanceof FLyrPoints)

                                lyrPoints = (FLyrPoints)lyr;

                        if(lyr instanceof FLyrGeoRaster && lyr.getName().startsWith("*"))

                                lyrGeoRaster = (FLyrGeoRaster)lyr;

                }

                ViewPort viewPort = theView.getMapControl().getMapContext().getViewPort();

                Point2D wcPoint = viewPort.toMapPoint(event.getPoint());

                if(firstPoint){        

                        if(lyrPoints != null){

                                //Si el punto cae fuera de la imagen mostramos un mensaje y salimos

                                while(        wcPoint.getX() < lyrGeoRaster.getMinX() ||

                                        wcPoint.getX() > lyrGeoRaster.getMaxX() ||

                                        wcPoint.getY() < lyrGeoRaster.getMinY() ||

                                        wcPoint.getY() > lyrGeoRaster.getMaxY()){

                                        JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(),

                                                        PluginServices.getText(this, "fuera_de_extent"));

                                        return;

                                }

                                //Hallamos pixelImg q son las coordenadas en pixeles de la imagen que corresponden

                                //con el punto seleccionado

                                double wcWidth = 0.0, wcHeight = 0.0, ptoWCX = 0.0, ptoWCY = 0.0;

                                int pixelImgX = 0, pixelImgY = 0;

                                try{

                                        wcWidth = lyrGeoRaster.getFullExtent().getWidth();

                                        wcHeight = lyrGeoRaster.getFullExtent().getHeight();

                                        ptoWCX = wcPoint.getX() - lyrGeoRaster.getFullExtent().getMinX();

                                        ptoWCY = wcPoint.getY() - lyrGeoRaster.getFullExtent().getMinY();

                                        pixelImgX = (int)((ptoWCX * SelectFilePanel.widthPxImg) / wcWidth);

                                        pixelImgY = (int)((ptoWCY * SelectFilePanel.heightPxImg) / wcHeight);

                                }catch(DriverException ex){}

                                //Salvamos el primer punto pinchado en la capa. (Pixeles de la imagen)

                                lyrPoints.getPoint(GeorefPointerListener.posPoint).pixelPoint = new Point2D.Double();

                                lyrPoints.getPoint(GeorefPointerListener.posPoint).pixelPoint.setLocation(pixelImgX, pixelImgY);

                                //Cargamos en la ventana el nuevo punto

                                dialog.getSelectPointsPanel().getTX().setText(String.valueOf(pixelImgX));

                                dialog.getSelectPointsPanel().getTY().setText(String.valueOf(pixelImgY));

                                firstPoint = false;

                        }

                }else{

                        //Salvamos el segundo punto pinchado en la capa (Coordenadas de georreferenciaci?n)

                        lyrPoints.getPoint(GeorefPointerListener.posPoint).mapPoint = new Point2D.Double();

                        lyrPoints.getPoint(GeorefPointerListener.posPoint).mapPoint.setLocation(wcPoint);

                        //Cargamos en la ventana el nuevo punto

                        dialog.getSelectPointsPanel().getLongitud().setText(SelectPointsPanel.tailDecimal(String.valueOf(wcPoint.getX())));

                        dialog.getSelectPointsPanel().getLatitud().setText(SelectPointsPanel.tailDecimal(String.valueOf(wcPoint.getY())));

                        //Deseleccionamos la herramienta de marcado de puntos

                        theView.getMapControl().setTool(lyrPoints.getLastTool());

                        firstPoint = true;

                }

                theView.getMapControl().getMapContext().invalidate();

                lyrPoints.showPoints();

        }

}