Application: gvSIG desktop

/* 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.Cursor;

import java.awt.geom.Point2D;

import java.text.NumberFormat;

import org.cresques.cts.IProjection;

import com.iver.andami.PluginServices;

import com.iver.andami.ui.mdiFrame.MainFrame;

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

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

import com.iver.cit.gvsig.fmap.core.v02.FConstant;

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

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

import com.iver.cit.gvsig.fmap.tools.Listeners.PointListener;

/**

 * DOCUMENT ME!

 *

 * @author Vicente Caballero Navarro

 */

public class StatusBarListener implements PointListener {

        private MapControl mapControl = null;

        private NumberFormat nf = null;

        /**

         * Crea un nuevo StatusBarListener.

         *

         * @param mc DOCUMENT ME!

         */

        public StatusBarListener(MapControl mc) {

                mapControl = mc;

                nf = NumberFormat.getInstance();

                nf.setMaximumFractionDigits(2);

        }

        /**

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#getCursor()

         */

        public Cursor getCursor() {

                return null;

        }

        /**

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#cancelDrawing()

         */

        public boolean cancelDrawing() {

                return false;

        }

        /**

         * 050211, jmorell: M?todo modificado para mejorar la manera de mostrar las

         * coordenadas geod?sicas en la barra de estado. Muestra Lat y Lon y aumenta

         * el n?mero de decimales para cuando trabajemos en coordenadas geod?sicas.

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

         */

        public void point(PointEvent event) throws BehaviorException {

                String[] axisText = new String[2];

                axisText[0] = "X = ";

                axisText[1] = "Y = ";

                Point2D p = mapControl.getMapContext().getViewPort().toMapPoint(event.getPoint());

                setFractionDigits(p);

                axisText = setCoorDisplayText(axisText);

                MainFrame mF = PluginServices.getMainFrame();

                PluginServices.getMainFrame().getStatusBar().setMessage("1",

                            FConstant.NAMES[mapControl.getMapContext().getViewPort().getDistanceUnits()]);

            PluginServices.getMainFrame().getStatusBar().setMessage("6", "1:"+mapControl.getMapContext().getScaleView());

                PluginServices.getMainFrame().getStatusBar().setMessage("7", mapControl.getViewPort().getProjection().getAbrev()); 

                if (mF != null)

                {

                        mF.getStatusBar().setMessage("2",

                                        axisText[0] + String.valueOf(nf.format(p.getX()/FMap.CHANGEM[mapControl.getViewPort().getDistanceUnits()])));

                        mF.getStatusBar().setMessage("3",

                                        axisText[1] + String.valueOf(nf.format(p.getY()/FMap.CHANGEM[mapControl.getViewPort().getDistanceUnits()])));

                }

        }

        /**

         * Aumenta el n?mero de decimales visibles cuando trabajamos con coordeandas 

         * geod?sicas. En concreto se a?aden 8 decimales, con lo que logramos una

         * definici?n subm?trica.

         * 050211, jmorell.

         * @param p

         */

        private void setFractionDigits(Point2D p) {

                IProjection iProj = mapControl.getMapContext().getProjection();

                if (iProj.getAbrev().equals("EPSG:4326") || iProj.getAbrev().equals("EPSG:4230")) {

                        nf.setMaximumFractionDigits(8);

                } else {

                        nf.setMaximumFractionDigits(2);

                }

        }

        /**

         * Cambia X e Y por Lat y Lon enb la barra de estado cuando trabajamos con

         * coordenadas geod?sicas.

         * 050211, jmorell.

         * @param p

         */

        private String[] setCoorDisplayText(String[] axisText) {

                IProjection iProj = mapControl.getMapContext().getProjection();

                if (iProj.getAbrev().equals("EPSG:4326") || iProj.getAbrev().equals("EPSG:4230")) {

                        axisText[0] = "Lon = ";

                        axisText[1] = "Lat = ";

                } else {

                        axisText[0] = "X = ";

                        axisText[1] = "Y = ";

                }

                return axisText;

        }

}