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.project.documents.view.toolListeners;

import java.awt.Cursor;

import java.awt.Image;

import java.awt.Point;

import java.awt.Toolkit;

import java.awt.geom.Point2D;

import java.text.NumberFormat;

import javax.swing.ImageIcon;

import com.iver.andami.PluginServices;

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

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

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

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

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

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

/**

 * <p>Listener for tools that measure using a circular area, displaying

 *   its radius at the status bar of the application's main frame.</p>

 *

 * @see CircleListener

 *

 * @author Laura

 */

public class CircleMeasureListener implements CircleListener {

        /**

         * The image to display when the cursor is active.

         */

        private final Image img = PluginServices.getIconTheme().get("cursor-query-distance").getImage();

        /**

         * The cursor used to work with this tool listener.

         *

         * @see #getCursor()

         */

        private Cursor cur = Toolkit.getDefaultToolkit().createCustomCursor(img,

                        new Point(16, 16), "");

        /**

         * Reference to the <code>MapControl</code> object that uses.

         */

        private MapControl mapCtrl;

        /**

         * <p>Creates a new listener for measure circular areas.</p>

         *

         * @param mc the <code>MapControl</code> object where the measures are made

         */

        public CircleMeasureListener(MapControl mc) {

                this.mapCtrl = mc;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.CircleListener#circle(com.iver.cit.gvsig.fmap.tools.Events.MeasureEvent)

         */

        public void circle(MeasureEvent event) throws BehaviorException {

                double dist = 0;

                double distAll = 0;

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

                for (int i = 0; i < (event.getXs().length - 1); i++) {

                        dist = 0;

                        Point2D p = new Point2D.Double(event.getXs()[i].doubleValue(),

                                        event.getYs()[i].doubleValue());

                        Point2D p2 = new Point2D.Double(event.getXs()[i + 1].doubleValue(),

                                        event.getYs()[i + 1].doubleValue());

                        ///dist = vp.toMapDistance((int) p.distance(p2));

                        dist = vp.distanceWorld(p, p2);

                        distAll += dist;

                }

                //System.out.println("Distancia = " + dist + " Distancia Total = " +

                //        (distAll));

                NumberFormat nf = NumberFormat.getInstance();

        nf.setMaximumFractionDigits(2);

        if (PluginServices.getMainFrame() != null)

        {

                double[] trans2Meter=MapContext.getDistanceTrans2Meter();

            PluginServices.getMainFrame().getStatusBar().setMessage("4",

                            "Dist:" + nf.format(dist/trans2Meter[mapCtrl.getViewPort().getDistanceUnits()]) + "");

                    PluginServices.getMainFrame().getStatusBar().setMessage("5",

                            "Total:" + nf.format(distAll/trans2Meter[mapCtrl.getViewPort().getDistanceUnits()]) + "");

        }

        }

        /*

         * (non-Javadoc)

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

         */

        public Cursor getCursor() {

                return cur;

        }

        /*

         * (non-Javadoc)

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

         */

        public boolean cancelDrawing() {

                return false;

        }

}