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)

     */

    @Override

    public void paintComponent(MapControlDrawer mapControlDrawer) {

        super.paintComponent(mapControlDrawer);

    }

    /*

    * (non-Javadoc)

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

     */

    @Override

    public void mouseClicked(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.isEmpty()) {

                addPoint(getMapControl().convertToMapPoint(e.getPoint(), this.getUseSnapping()));

                addPoint(getMapControl().convertToMapPoint(e.getPoint(), this.getUseSnapping()));

                addPoint(getMapControl().convertToMapPoint(e.getPoint(), this.getUseSnapping()));

            } else {

                addAntPoint(getMapControl().convertToMapPoint(e.getPoint(), this.getUseSnapping()));

            }

            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, p.getX());

        arrayY.add(arrayY.size() - 1, 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, p.getX());

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

        }

    }

    /*

         * (non-Javadoc)

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

     */

    @Override

    public void mouseMoved(MouseEvent e) throws BehaviorException {

        if (isClicked) {

            changeAntPoint(getMapControl().convertToMapPoint(e.getPoint(), this.getUseSnapping()));

            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)

    */

    @Override

    public void mouseDragged(MouseEvent e) throws BehaviorException {

        mouseMoved(e);

    }

}