| gvSIG desktop 1

/* 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 com.iver.cit.gvsig.gui.graphictools;

import java.awt.Cursor;

import java.awt.Image;

import java.awt.Point;

import java.awt.Toolkit;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import javax.swing.ImageIcon;

import com.iver.andami.PluginServices;

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

import com.iver.cit.gvsig.fmap.layers.FBitSet;

import com.iver.cit.gvsig.fmap.layers.GraphicLayer;

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

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

import com.iver.cit.gvsig.fmap.tools.Listeners.PointListener;

/**

 * <p>Listener that selects the items of a {@link GraphicLayer GraphicLayer} that their area

 *  intersects with the point selected on the associated <code>MapControl</code>.</p>

 *

 * <p>Listens a single click of any mouse's button.</p>

 */

public class ToolSelectGraphic implements PointListener{

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

//        "images/PointSelectCursor.gif")).getImage();

        /**

         * The image to display when the cursor is active.

         */        

        private final Image img = PluginServices.getIconTheme().get("rect-select-cursor").getImage();

        /**

         * The cursor used to work with this tool listener.

         * 

         * @see #getCursor()

         */

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

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

        /**

         * Reference to the <code>MapControl</code> object that uses.

         */

        protected MapControl mapCtrl;

        /**

         * <p>Creates a new <code>ToolSelectGraphic</code> object.</p>

         * 

         * @param mc the <code>MapControl</code> where will be applied the changes

         */

        public ToolSelectGraphic(MapControl mc) {

        this.mapCtrl = mc;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.PointListener#point(com.iver.cit.gvsig.fmap.tools.Events.PointEvent)

         */

        public void point(PointEvent event) throws BehaviorException {

        Point2D p = event.getPoint();

        Point2D mapPoint = mapCtrl.getViewPort().toMapPoint((int) p.getX(), (int) p.getY());

        // Tolerancia de 3 pixels

        double tol = mapCtrl.getViewPort().toMapDistance(3);

        GraphicLayer gLyr = mapCtrl.getMapContext().getGraphicsLayer();

        Rectangle2D recPoint = new Rectangle2D.Double(mapPoint.getX() - (tol / 2),

                        mapPoint.getY() - (tol / 2), tol, tol);

        FBitSet oldBitSet = gLyr.getSelection();

        FBitSet newBitSet = gLyr.queryByRect(recPoint);

        if (event.getEvent().isControlDown())

            newBitSet.xor(oldBitSet);

        gLyr.setSelection(newBitSet);

                mapCtrl.drawGraphics();

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.PointListener#pointDoubleClick(com.iver.cit.gvsig.fmap.tools.Events.PointEvent)

         */

        public void pointDoubleClick(PointEvent event) throws BehaviorException {

                // TODO Auto-generated method stub

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#getCursor()

         */

        public Cursor getCursor() {

                return cur;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#cancelDrawing()

         */

        public boolean cancelDrawing() {

                return false;

        }

}