Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

* 

* 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., 51 Franklin Street, Fifth Floor, Boston, 

* MA  02110-1301, USA.

* 

*/

package org.gvsig.raster.tools.app.basic.tool.multiresolution;

import java.awt.Component;

import java.awt.Image;

import java.awt.event.MouseEvent;

import java.awt.geom.Point2D;

import javax.swing.JOptionPane;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.ui.mdiManager.IWindow;

import org.gvsig.app.project.documents.view.gui.AbstractViewPanel;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

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

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontext.layers.FLayers;

import org.gvsig.fmap.mapcontrol.MapControl;

import org.gvsig.fmap.mapcontrol.tools.BehaviorException;

import org.gvsig.fmap.mapcontrol.tools.Events.PointEvent;

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

import org.gvsig.raster.fmap.layers.Multiresolution;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * <p>Inherits {@link ResolutionLevelListenerImpl ResolutionLevelListenerImpl} enabling/disabling special

 *  controls for managing the data selected.</p>

 *

 * @see ResolutionLevelListenerImpl

 *

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class ResolutionLevelListener implements PointListener {

        private static final Logger logger  = LoggerFactory.getLogger(ResolutionLevelListener.class);

        private Image               izoomin = null;

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.mapcontrol.tools.ResolutionLevelListenerImpl#point(org.gvsig.fmap.mapcontrol.tools.Events.PointEvent)

         */

        @SuppressWarnings("deprecation")

        public void point(PointEvent event) throws BehaviorException {

                //Selects active window

                IWindow theView = PluginServices.getMDIManager().getActiveWindow();

                if(!(theView instanceof AbstractViewPanel)) {

                        JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(), PluginServices.getText(this.getClass(), "window_not_valid"));

                        return;

                }

                //Gets the multiresolution layer

                MapControl mapCtrl = ((AbstractViewPanel)theView).getMapControl();

                FLayers layers = mapCtrl.getMapContext().getLayers();

                Multiresolution lyrMultires = null;

                for (int i = 0; i < layers.getLayersCount(); i++) {

                        if(layers.getLayer(i).isActive() && 

                                layers.getLayer(i) instanceof Multiresolution &&

                                ((Multiresolution)layers.getLayer(i)).isEnabledMultiresolution()) {

                                lyrMultires = (Multiresolution)layers.getLayer(i);

                        }

                }

                //Shows a message if the layer doesn't exist or there aren't any selected

                if(lyrMultires == null) {

                        boolean thereAreLayersSelected = false;

                        for (int i = 0; i < layers.getLayersCount(); i++) {

                                if(layers.getLayer(i).isActive())

                                        thereAreLayersSelected = true;

                        }

                        String message = null;

                        if(!thereAreLayersSelected)

                                message = PluginServices.getText(this.getClass(), "there_arent_selected");

                        else

                                message = PluginServices.getText(this.getClass(), "no_resolution_level");

                        JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(), message);

                        return;

                }

                //Left button. Zoom +

                if(event.getEvent().getButton() == MouseEvent.BUTTON1) { 

                        if(!lyrMultires.increaseZoomLevel()) {

                            JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(), PluginServices.getText(this.getClass(), "max_zoom_reached"));

                            return;

                    }

                }

                //Right button. Zoom -

                if(event.getEvent().getButton() == MouseEvent.BUTTON3) { 

                        if(!lyrMultires.decreaseZoomLevel()) {

                            JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(), PluginServices.getText(this.getClass(), "min_zoom_reached"));

                            return;

                    }

                }

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

                Point2D center = viewPort.toMapPoint(event.getPoint());

                Envelope r;

                try {

                        r = lyrMultires.getCoordsInLevel(center, lyrMultires.getZoomLevel(), 

                                        viewPort.getImageWidth(), viewPort.getImageHeight());

                } catch (CreateEnvelopeException e) {

                        return;

                }

                viewPort.setEnvelope(r);

                if (PluginServices.getMainFrame() != null)

                    PluginServices.getMainFrame().enableControls();

        }

        public void pointDoubleClick(PointEvent event) throws BehaviorException {

        }

        public boolean cancelDrawing() {

                logger.debug("cancelDrawing true");

                return true;

        }

        public Image getImageCursor() {

                if(izoomin == null)

                        izoomin = IconThemeHelper.getImage("point-cursor");

                return izoomin;

        }

}