| 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.fmap.tools;

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

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

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

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

import java.awt.Cursor;

import java.awt.Image;

import java.awt.Point;

import java.awt.Toolkit;

import java.awt.geom.Rectangle2D;

import javax.swing.ImageIcon;

/**

 * Implementaci?n de la interfaz RectangleListener como herramienta para

 * realizar un zoom m?s.

 *

 * @author Vicente Caballero Navarro

 */

public class ZoomInListenerImpl implements RectangleListener {

        private final Image izoomin = new ImageIcon(NewMapControl.class.getResource(

                                "images/ZoomInCursor.gif")).getImage();

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

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

        private NewMapControl mapCtrl;

        /**

         * Crea un nuevo RectangleListenerImpl.

         *

         * @param mapCtrl MapControl.

         */

        public ZoomInListenerImpl(NewMapControl mapCtrl) {

                this.mapCtrl = mapCtrl;

        }

        /**

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.RectangleListener#rectangle(com.iver.cit.gvsig.fmap.tools.Events.RectangleEvent)

         */

        public void rectangle(RectangleEvent event) {

                Rectangle2D rect = event.getWorldCoordRect();

                Rectangle2D pixelRect = event.getPixelCoordRect();

                Rectangle2D.Double r = new Rectangle2D.Double();

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

                if ((pixelRect.getWidth() < 3) && (pixelRect.getHeight() < 3))

                {

                   double factor = 0.6;

                   double nuevoX = rect.getMaxX() -

                       ((vp.getExtent().getWidth() * factor) / 2.0);

                   double nuevoY = rect.getMaxY() -

                       ((vp.getExtent().getHeight() * factor) / 2.0);

                   r.x = nuevoX;

                   r.y = nuevoY;

                   r.width = vp.getExtent().getWidth() * factor;

                   r.height = vp.getExtent().getHeight() * factor;

                   vp.setExtent(r);

                }

                else

                {

                    vp.setExtent(event.getWorldCoordRect());

                }

                mapCtrl.drawMap();

        }

        /**

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

         */

        public Cursor getCursor() {

                return cur;

        }

        /**

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

         */

        public boolean cancelDrawing() {

                return true;

        }

}