| gvSIG desktop 1

/* 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 javax.swing.JMenuItem;

import com.iver.andami.PluginServices;

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

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

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

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

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

public class ZoomToVisibleScaleTocMenuEntry extends TocMenuEntry {

        private JMenuItem propsMenuItem;

        FLayer lyr = null;

        public void initialize(FPopupMenu m) {

                super.initialize(m);

                if (isTocItemBranch()) {

                        lyr = getNodeLayer();

                    if ((lyr instanceof FLyrWMS)) {

                            propsMenuItem = new JMenuItem(PluginServices.getText(this, "zoom_to_visible_scale"));

                            getMenu().add( propsMenuItem );

                            getMenu().setEnabled(true);

                            propsMenuItem.addActionListener(this);

                     }

                }

        }

        public void actionPerformed(ActionEvent e) {

                lyr = getNodeLayer();

                if (lyr.isAvailable()) {

                        if ((lyr instanceof FLyrWMS)) {

                                FLyrWMS wmsLayer = (FLyrWMS) lyr;

                                MapContext mp = getMapContext();

                                double mapScale = (double) mp.getScaleView();

                                double correctedMinScale = wmsLayer.getCorrectedServerMinScale();

                                double correctedMaxScale = wmsLayer.getCorrectedServerMaxScale();

                                if (correctedMinScale>0 // -1 and 0 are invalid values for scale

                                                && mapScale < correctedMinScale) {

                                        mp.setScaleView((long)correctedMinScale);

                                }

                                else if (correctedMaxScale>0

                                                && mapScale>=correctedMaxScale){

                                        /**

                                         * As the WMS 1.3 standard defines the MAX DENOMINATOR SCALE as a non-inclusive

                                         * interval limit, we have to subtract a constant to MAX_SCALE in order to

                                         * move to the "safe side" of the limit.

                                         */

                                        mp.setScaleView((long)correctedMaxScale-1);

                                }

                        }

                }

        }

}