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.Color;

import java.awt.event.MouseEvent;

import java.awt.geom.Point2D;

import java.util.ArrayList;

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

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;

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

/**

 * <p>Behavior that allows user to draw a polyline 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 PolylineBehavior extends Behavior {

        /**

         * The abscissa coordinate of all vertexes of the polyline.

         */

        protected ArrayList arrayX = new ArrayList(); //<Double>

        /**

         * The ordinate coordinate of all vertexes of the polyline.

         */

        protected ArrayList arrayY = new ArrayList(); //<Double>

        /**

         * Determines if user is setting the vertexes (with one click of the button 1 of the mouse), or not.

         */

        protected boolean isClicked = false;

        /**

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

         *

         * @see #getListener()

         * @see #setListener(ToolListener)

         */

        protected PolylineListener listener;

        /**

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

         *

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

         */

        public PolylineBehavior(PolylineListener mli) {

                listener = mli;

        }

        /*

         * (non-Javadoc)

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

         */

        public void paintComponent(MapControlDrawer mapControlDrawer) {

                mapControlDrawer.drawImage(getMapControl().getImage(), 0, 0);

                mapControlDrawer.setColor(Color.black);

                if (!arrayX.isEmpty()) {

                        drawPolyLine(mapControlDrawer);

                }

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#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 {

                        //System.err.println("simpleclick");

                        isClicked = true;

                        Point2D point = getMapControl().getViewPort().toMapPoint(e.getPoint());

                        addPoint(point);

                        if (arrayX.size() < 2) {

                                addPoint(point);

                        }

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

                }

        }

        /*

         * (non-Javadoc)

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

         */

        public void mouseDragged(MouseEvent e) throws BehaviorException {

            if( !isMyButton(e) ) {

                return;

            }

                mouseMoved(e);

        }

        /**

         * <p>Changes the last point added of the polyline.</p>

         *

         * @param p a point which will replace the last added to the polyline

         */

        protected void changeLastPoint(Point2D p) {

                if (arrayX.size() > 0) {

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

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

                }

        }

        /*

         * (non-Javadoc)

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

         */

        public void mouseMoved(MouseEvent e) throws BehaviorException {

            if( !isMyButton(e) ) {

                return;

            }

                //System.err.println("moved antes de click");

                if (isClicked) {

                        //System.err.println("moved despues de click");

                        changeLastPoint(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();

                }

        }

        /**

         * <p>Draws the polyline in the <code>Graphics2D</code> of the associated <code>MapControl</code>.</p>

         * @param mapControlDrawer

         */

        protected void drawPolyLine(MapControlDrawer mapControlDrawer) {

                GeneralPathX polyline = new GeneralPathX(GeneralPathX.WIND_EVEN_ODD, arrayX.size());

                polyline.moveTo(((Double) arrayX.get(0)).doubleValue(),

                                ((Double) arrayY.get(0)).doubleValue());

                for (int index = 0; index < arrayX.size(); index++) {

                    polyline.lineTo(((Double) arrayX.get(index)).doubleValue(),((Double) arrayY.get(index)).doubleValue());

                }

                mapControlDrawer.draw(createLineString(polyline));

        }

        /**

         * <p>Adds a new point to the polyline.</p>

         *

         * @param p a new point to the polyline

         */

        protected void addPoint(Point2D p) {

                arrayX.add(new Double(p.getX()));

                arrayY.add(new Double(p.getY()));

        }

        /**

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

         *

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

         */

        public void setListener(ToolListener listener) {

                this.listener = (PolylineListener) listener;

        }

        /*

         * (non-Javadoc)

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

         */

        public ToolListener getListener() {

                return listener;

        }

}