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 org.gvsig.fmap.mapcontrol.tools.Behavior;

import java.awt.Color;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.event.MouseEvent;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import java.awt.image.BufferedImage;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontrol.MapControlDrawer;

import org.gvsig.fmap.mapcontrol.tools.BehaviorException;

import org.gvsig.fmap.mapcontrol.tools.Events.EnvelopeEvent;

import org.gvsig.fmap.mapcontrol.tools.Listeners.RectangleListener;

import org.gvsig.fmap.mapcontrol.tools.Listeners.ToolListener;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * <p>Behavior that permits user to select a rectangular area on the associated <code>MapControl</code> using

 *  a {@link RectangleListener RectangleListener}.</p>

 *

 * @author Vicente Caballero Navarro

 * @author Pablo Piqueras Bartolom?

 */

public class RectangleBehavior extends Behavior {

        private static final GeometryManager geomManager = GeometryLocator.getGeometryManager();

        private static final Logger logger = LoggerFactory.getLogger(RectangleBehavior.class);

        /**

         * First point of the rectangle area, that represents a corner.

         */

        private Point2D m_FirstPoint;

        /**

         * Second point of the rectangle area, that represents the opposite corner of the first,

         *  along the diagonal.

         */

        private Point2D m_LastPoint;

        /**

         * Tool listener used to work with the <code>MapControl</code> object.

         *

         * @see #getListener()

         * @see #setListener(ToolListener)

         */

        private RectangleListener listener;

        /**

         * <p>Creates a new behavior for selecting rectangle areas.</p>

         *

         * @param zili listener used to permit this object to work with the associated <code>MapControl</code>

         */

        public RectangleBehavior(RectangleListener zili) {

                listener = zili;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#paintComponent(java.awt.Graphics)

         */

        public void paintComponent(MapControlDrawer mapControlDrawer) {

                BufferedImage img = getMapControl().getImage();

                mapControlDrawer.drawImage(img, 0, 0);

                mapControlDrawer.setColor(Color.black);                

                // Borramos el anterior

                Rectangle r = new Rectangle();

                // Dibujamos el actual

                if ((m_FirstPoint != null) && (m_LastPoint != null)) {

                        r.setFrameFromDiagonal(m_FirstPoint, m_LastPoint);

                        mapControlDrawer.drawRect(r.x, r.y, r.width, r.height);

                }                

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mousePressed(java.awt.event.MouseEvent)

         */

        public void mousePressed(MouseEvent e) {

                if (e.getButton() == MouseEvent.BUTTON1) {

                        m_FirstPoint = e.getPoint();

                        getMapControl().repaint();

                }

                if (listener.cancelDrawing()) {

                        getMapControl().cancelDrawing();

                        getMapControl().repaint();

                }

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mouseReleased(java.awt.event.MouseEvent)

         */

        public void mouseReleased(MouseEvent e) throws BehaviorException {

            if (m_FirstPoint == null) return;

                Point2D p1;

                Point2D p2;

                Point pScreen = e.getPoint();

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

                p1 = vp.toMapPoint(m_FirstPoint);

                p2 = vp.toMapPoint(pScreen);

                if (e.getButton() == MouseEvent.BUTTON1) {

                        //        Fijamos el nuevo extent

                        double x=0;

                        double y=0;

                        double x1=0;

                        double y1=0;

                        if (p1.getX()<p2.getX()){

                                x=p1.getX();

                                x1=p2.getX();

                        }else{

                                x=p2.getX();

                                x1=p1.getX();

                        }

                        if (p1.getY()<p2.getY()){

                                y=p1.getY();

                                y1=p2.getY();

                        }else{

                                y=p2.getY();

                                y1=p1.getY();

                        }

                        Envelope r;

                        try {

                                r = geomManager.createEnvelope(x,y,x1,y1, SUBTYPES.GEOM2D);

                                Rectangle2D rectPixel = new Rectangle();

                                rectPixel.setFrameFromDiagonal(m_FirstPoint, pScreen);

                                EnvelopeEvent event = new EnvelopeEvent(r, e, rectPixel);

                                listener.rectangle(event);

                        } catch (CreateEnvelopeException e1) {

                                logger.error("Error creating the envelope", e);

                        }//Rectangle2D.Double();

                        //                        r.setFrameFromDiagonal(p1, p2);

                }

                m_FirstPoint = null;

                m_LastPoint = null;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mouseDragged(java.awt.event.MouseEvent)

         */

        public void mouseDragged(MouseEvent e) {

                m_LastPoint = e.getPoint();

                getMapControl().repaint();

        }

        /**

         * <p>Sets a tool listener to work with the <code>MapControl</code> using this behavior.</p>

         *

         * @param listener a <code>RectangleListener</code> object for this behavior

         */

        public void setListener(ToolListener listener) {

                this.listener = (RectangleListener) listener;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#getListener()

         */

        public ToolListener getListener() {

                return listener;

        }

}