| gvSIG desktop 1

/*

 * Created on 10-abr-2006

 *

 * 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

 */

/* CVS MESSAGES:

*

* $Id:

* $Log:

*/

package org.gvsig.fmap.tools;

import java.awt.Cursor;

import java.awt.event.MouseEvent;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import org.gvsig.fmap.tools.listeners.VectorListener;

import org.gvsig.referencing.DisactivableMappedPosition;

import org.gvsig.referencing.MappedPositionContainer;

import org.gvsig.referencing.ReferencingUtil;

import org.opengis.spatialschema.geometry.DirectPosition;

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

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

import com.iver.cit.gvsig.fmap.tools.BehaviorException;

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

/**

 * Vector listener impl that creates vector errors to compute vectorial layers

 * transformations.

 *

 * For each digitized vector error in screen, it creates a geotools MappedPosition

 * instance.

 * */

public class VectorListenerImpl implements VectorListener {

//        private final Image img = new ImageIcon(MapControl.class.

//                                                                                                getResource("images/PointSelectCursor.gif")).

//                                                                                                getImage();

//        private Cursor cur = Toolkit.getDefaultToolkit().createCustomCursor(img,

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

        private Cursor cur = Cursor.getPredefinedCursor(Cursor.HAND_CURSOR);

        /**

         * MapControl creator of digitizing events.

         */

        protected MapControl mapCtrl;

        /**

         * Collection of existing digitized links, to add new vector error.

         */

        MappedPositionContainer linksList;

        protected boolean isZooming = false;

        public VectorListenerImpl(MapControl mapCtrl, MappedPositionContainer linksList) {

                super();

                this.mapCtrl = mapCtrl;

                this.linksList = linksList;

        }

        public void vector(MoveEvent event) throws BehaviorException {

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

                int modifiers = event.getEvent().getModifiers();

                int modifiersEx = event.getEvent().getModifiersEx();

                int ctrlDownMask = modifiersEx & MouseEvent.CTRL_DOWN_MASK;

                int button1Mask = modifiers & MouseEvent.BUTTON1_MASK;

                int button2Mask = modifiers & MouseEvent.BUTTON3_MASK;

                if(ctrlDownMask == MouseEvent.CTRL_DOWN_MASK && vp.getExtent()!=null){

                        isZooming = true;

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

                        Rectangle2D rect = vp.getExtent();

                        double factor = 1;

                        if(button1Mask == MouseEvent.BUTTON1_MASK){

                                //zoom +

                                factor = 1/1.5d;

                        }else if(button2Mask == MouseEvent.BUTTON3_MASK){

                                //zoom -

                                factor = 1*1.5d;

                        }else{

                                System.err.println("Tecla ctrl pulsada, pero pulsacion de boton sin boton izquierdo o derecho");

                                return;

                        }

                        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);

                        mapCtrl.getMapContext().clearAllCachingImageDrawnLayers();

                }else{

                        isZooming = false;

//                        Point2D from = vp.toMapPoint(event.getFrom());

//                        Point2D to = vp.toMapPoint(event.getTo());

                        Point2D from = event.getFrom();

                        Point2D to = event.getTo();

                        ReferencingUtil referencing = ReferencingUtil.getInstance();

                        //TODO Ver como pasar a GeoAPI la proyeccion del mapControl (libJCRS)

                        //de momento estamos pasando null

                        DirectPosition source =

                                referencing.create(new double[]{from.getX(), from.getY()}, null);

                        DirectPosition destination =

                                referencing.create(new double[]{to.getX(), to.getY()}, null);

                        DisactivableMappedPosition mappedPosition

                                = new DisactivableMappedPosition(source, destination);

                        this.linksList.addMappedPosition(mappedPosition);

                }

        }

        public boolean cancelDrawing() {

                return false;

        }

        public Cursor getCursor() {

                return cur;

        }

}