Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

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

import java.awt.event.MouseEvent;

import java.awt.geom.Point2D;

import org.gvsig.fmap.mapcontrol.MapControlDrawer;

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

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

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

/**

 * <p>Behavior that permits user to draw a polygon by its vertexes on the image of the associated

 *  <code>MapControl</code> using a {@link PolylineListener PolylineListener}.</p>

 *

 * @author Vicente Caballero Navarro

 * @author Pablo Piqueras Bartolom?

 */

public class PolygonBehavior extends PolylineBehavior {

        /**

         * <p>Creates a new behavior for drawing a polygon by its vertexes.</p>

         *

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

         */

        public PolygonBehavior(PolylineListener ali) {

                super(ali);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.mapcontrol.tools.Behavior.Behavior#paintComponent(org.gvsig.fmap.mapcontrol.MapControlDrawer)

         */

        public void paintComponent(MapControlDrawer mapControlDrawer) {

                super.paintComponent(mapControlDrawer);

        }

        /*

         * (non-Javadoc)

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

         */

        public void mousePressed(MouseEvent e) throws BehaviorException {

            if( !isMyButton(e) ) {

                return;

            }

                if (e.getClickCount() == 2) {

                        listener.polylineFinished(new MeasureEvent((Double[]) arrayX.toArray(new Double[arrayX.size()]), (Double[]) arrayY.toArray(new Double[arrayY.size()]), e));

                        arrayX.clear();

                        arrayY.clear();

                        isClicked = false;

                } else {

                        isClicked = true;

                        if (arrayX.size() == 0) {

                                addPoint(getMapControl().getViewPort().toMapPoint(e.getPoint()));

                                addPoint(getMapControl().getViewPort().toMapPoint(e.getPoint()));

                                addPoint(getMapControl().getViewPort().toMapPoint(e.getPoint()));

                        } else {

                                addAntPoint(getMapControl().getViewPort().toMapPoint(e.getPoint()));

                        }

                        listener.pointFixed(new MeasureEvent((Double[]) arrayX.toArray(new Double[arrayX.size()]), (Double[]) arrayY.toArray(new Double[arrayY.size()]), e));

                }

        }

        /**

         * <p>Adds a new vertex to the polygon.</p>

         *

         * @param p a new vertex to the polygon

         */

        private void addAntPoint(Point2D p) {

                arrayX.add(arrayX.size() - 1, new Double(p.getX()));

                arrayY.add(arrayY.size() - 1, new Double(p.getY()));

        }

        /**

         * <p>Changes the last vertex added to the polygon.</p>

         *

         * @param p a new vertex to the polygon

         */

        private void changeAntPoint(Point2D p) {

                if (arrayX.size() > 2) {

                        arrayX.set(arrayX.size() - 2, new Double(p.getX()));

                        arrayY.set(arrayY.size() - 2, new Double(p.getY()));

                }

        }

        /*

         * (non-Javadoc)

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

         */

        public void mouseMoved(MouseEvent e) throws BehaviorException {

            if( !isMyButton(e) ) {

                return;

            }

                if (isClicked) {

                        changeAntPoint(getMapControl().getViewPort().toMapPoint(e.getPoint()));

                        MeasureEvent event = new MeasureEvent((Double[]) arrayX.toArray(new Double[arrayX.size()]), (Double[]) arrayY.toArray(new Double[arrayY.size()]), e);

                        listener.points(event);

                        getMapControl().repaint();

                }

        }

        /*

         * (non-Javadoc)

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

         */

        public void mouseDragged(MouseEvent e) throws BehaviorException {

                mouseMoved(e);

        }

}