Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

*

* Copyright (C) 2005 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.toc;

import java.awt.event.ActionEvent;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import javax.swing.JMenuItem;

import com.iver.andami.PluginServices;

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

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

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

import com.iver.cit.gvsig.project.documents.view.toc.TocMenuEntry;

import com.iver.cit.gvsig.project.documents.view.toc.gui.FPopupMenu;

/** 

 * This class implements the TOC meny entry to do a zoom to pixel.

 * Zooming to a pixel causes to change the view's zoom to fit in the coverage's native

 * resolution.

 * 

 * Entrada de men? para la activaci?n de la funcionalidad de zoom a un

 * pixel.

 * @author Jaume - jaume.dominguez@iver.es

 */

public class WCSZoomToPixelTocMenuEntry extends TocMenuEntry {

        public static final int ZOOM_TO_VIEW_CENTER = 0x2;

        private JMenuItem properties;

        FLayer lyr = null;

        public int zoomType = ZOOM_TO_VIEW_CENTER;

        public void initialize(FPopupMenu m) {

                super.initialize(m);

                if (isTocItemBranch()) {

                        lyr = getNodeLayer();

                    // Opciones para capas raster

                    if ((lyr instanceof FLyrWCS)) {

                            properties = new JMenuItem(PluginServices.getText(this, "Zoom_pixel"));

                            getMenu().add( properties );

                            properties.setFont(FPopupMenu.theFont);

                            getMenu().setEnabled(true);

                            // LWS getMenu().addSeparator();

                            properties.addActionListener(this);

                     }

                }

        }

        /**

         * Calculates the zoom that fits the coverage native resolution.

         * 

         * TODO fix the little loss of accuracy caused by a floating point issue

         */

        public void actionPerformed(ActionEvent e) {

                //System.out.println("Zoom a un pixel");

            ViewPort v = getMapContext().getViewPort();

            double w2 = v.getImageWidth()/2D;

            double h2 = v.getImageHeight()/2D;

            double wcOriginCenterX = v.getExtent().getMinX()+((v.getExtent().getMaxX()-v.getExtent().getMinX())/2D);

            double wcOriginCenterY = v.getExtent().getMinY()+((v.getExtent().getMaxY()-v.getExtent().getMinY())/2D);

            Point2D maxRes = ((FLyrWCS) lyr).getMaxResolution();

            //double wcDstMinX = wcOriginCenterX-w2*maxRes;

            double wcDstMinX = wcOriginCenterX-w2*maxRes.getX();

            //double wcDstMinY = wcOriginCenterY+h2*maxRes;

            double wcDstMinY = wcOriginCenterY+h2*maxRes.getY();

            //double wcDstWidth = w2*maxRes*2D;

            double wcDstWidth = w2*maxRes.getX()*2D;

               //double wcDstHeight = h2*maxRes*2D;

            double wcDstHeight = h2*maxRes.getY()*2D;

            getMapContext().getViewPort().setExtent(

                            new Rectangle2D.Double(wcDstMinX, wcDstMinY, wcDstWidth, wcDstHeight));

        }

}