gvSIG tools: Gazetteer

/* 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 org.gvsig.gazetteer.loaders;

import java.awt.Color;

import java.awt.Toolkit;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import org.cresques.cts.ICoordTrans;

import org.cresques.cts.IProjection;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.andami.PluginServices;

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

import org.gvsig.fmap.crs.CRSFactory;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

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

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

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

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

import org.gvsig.fmap.mapcontext.MapContext;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.MapContextManager;

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontext.layers.vectorial.GraphicLayer;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.fmap.mapcontext.rendering.symbols.ITextSymbol;

import org.gvsig.gazetteer.DeleteSearchesExtension;

import org.gvsig.gazetteer.querys.Feature;

import org.gvsig.gazetteer.querys.GazetteerQuery;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.marker.IMarkerSymbol;

/**

 * This class is used to load a new feature like a layer in gvSIG

 *

 * @author Jorge Piera Llodra (piera_jor@gva.es)

 */

public class FeatureLoader {

        private static final Logger LOG =

        LoggerFactory.getLogger(FeatureLoader.class);

    private static GeometryManager geometryManager = GeometryLocator.getGeometryManager();

        private static MapContextManager mapContextManager = MapContextLocator.getMapContextManager();

        /**

         * Coordinates Transformer

         */

        private ICoordTrans coordTrans;

        /**

         * @param projection

         * Server projection

         */

        public FeatureLoader(String sProjection){

                AbstractViewPanel activeView =

                        (AbstractViewPanel) PluginServices.getMDIManager().getActiveWindow();

                IProjection projection = CRSFactory.getCRS(sProjection);

                if (projection == null){

                        projection = activeView.getMapControl().getViewPort().getProjection();

                }

                coordTrans=  projection.getCT(activeView.getMapControl().getViewPort().getProjection());

        }

        /**

         * It makes a zoom in gvSIG

         * @param

         * feature

         * @param

         * query

         * Query that contains advanced options to search and

         * to show the results

         * @return

         * true or false if fail

         */

        public boolean load(Feature feature,GazetteerQuery query) {

                addAndDrawLabel(feature,

                                query.getOptions().getAspect().isKeepOld(),

                                query.getOptions().getAspect().isPaintCurrent());

                if (query.getOptions().getAspect().isGoTo()){

                        focusCenter(feature);

                }

                return true;

        }

        /**

         * This method focus the toponim in the center of the view

         * @param feature

         * Feature that contains the coordinates

         */

        private void focusCenter(Feature feature){

                AbstractViewPanel activeView =

                        (AbstractViewPanel) PluginServices.getMDIManager().getActiveWindow();

                IProjection projection = activeView.getProjection();

                ViewPort viewPort = activeView.getMapControl().getViewPort();

                MapContext mapContext = activeView.getMapControl().getMapContext();

                Point point = getReprojectedPoint((feature.getCoordinates()));

//        Point point = feature.getCoordinates();

                if (viewPort.getAdjustedEnvelope() != null){

                        Toolkit kit = Toolkit.getDefaultToolkit();

                        double dpi = kit.getScreenResolution();

                        Envelope envelope = viewPort.getAdjustedEnvelope();

                        Rectangle2D rectangle = new Rectangle2D.Double(envelope.getLowerCorner().getX(),

                                        envelope.getLowerCorner().getY(),

                                        envelope.getUpperCorner().getX() - envelope.getLowerCorner().getX(),

                                        envelope.getUpperCorner().getY() - envelope.getLowerCorner().getY());

                        Rectangle2D extent = projection.getExtent(rectangle,

                                new Double(25000).doubleValue(),

                                        new Double(viewPort.getImageWidth()).doubleValue(),

                                        new Double(viewPort.getImageHeight()).doubleValue(),

                                        viewPort.getMapUnits(),

                                        viewPort.getDistanceUnits(),

                                        dpi);

                        if (extent != null){

                                try {

                                        envelope = geometryManager.createEnvelope(SUBTYPES.GEOM2D);

                                        Point loweCorner = geometryManager.createPoint(point.getX() - extent.getWidth()/2,

                                                        point.getY() - extent.getHeight()/2,

                                                        SUBTYPES.GEOM2D);

                                        Point upperCorner = geometryManager.createPoint(point.getX() + extent.getWidth()/2,

                                                        point.getY() + extent.getHeight()/2,

                                                        SUBTYPES.GEOM2D);

                                        envelope.setLowerCorner(loweCorner);

                                        envelope.setUpperCorner(upperCorner);

                                        mapContext.zoomToEnvelope(envelope);

                                } catch (CreateEnvelopeException e) {

                                    LOG.error("Error creating the envelope", e);

                                } catch (CreateGeometryException e) {

                                    LOG.error("Error creating the envelope", e);

                                }

                        }

                }

        }

        /**

         * It adds a new Label to the current view

         * @param feature

         * To obtain the coordinates and the toponim name

         * @param isRemoveOldClicked

         * To remove or keep the old searches

         */

        private void addAndDrawLabel(Feature feature,boolean isRemoveOldClicked,boolean isMarkedPlaceClicked){

                AbstractViewPanel activeView =

                        (AbstractViewPanel) PluginServices.getMDIManager().getActiveWindow();

                MapContext mc = activeView.getMapControl().getMapContext();

                GraphicLayer lyr = mc.getGraphicsLayer();

                if (isRemoveOldClicked){

                        lyr.clearAllGraphics();

                }

        if (isMarkedPlaceClicked) {

            int pointSymbol = lyr.addSymbol(getSymbol());

            int textSymbol = lyr.addSymbol(getTextSymbol(feature.getName()));

            Point point = feature.getCoordinates();

            lyr.setCoordTrans(getCoordTrans());

            lyr.addGraphic("gazetteer", point, pointSymbol, null);

            lyr.addGraphic("gazetteer", point, textSymbol, feature.getName());

            DeleteSearchesExtension.setVisible();

            PluginServices.getMainFrame().enableControls();

        }

                mc.invalidate();

        }

        /**

         * Creates a FSymbol

         * @return

         * FSymbol

         */

        private ISymbol getTextSymbol(String text){

                ITextSymbol theSymbol =

                                (ITextSymbol) mapContextManager.getSymbolManager()

                                                .createSymbol(ITextSymbol.SYMBOL_NAME);

                theSymbol.setColor(Color.RED);

                theSymbol.setTextColor(Color.BLACK);

                theSymbol.setAutoresizeEnabled(false);

                theSymbol.setFontSize(16);

                theSymbol.setText(text);

                return theSymbol;

        }

        /**

         * Creates a FSymbol

         * @return

         * FSymbol

         */

        private ISymbol getSymbol(){

                IMarkerSymbol theSymbol =

                                (IMarkerSymbol) mapContextManager.getSymbolManager()

                                                .createSymbol(IMarkerSymbol.CIRCLE_STYLE);

                theSymbol.setColor(Color.RED);

                theSymbol.setSize(4);

                return theSymbol;

        }

//        /**

//         * Reprojects the new point

//         * @param ptOrig

//         * Origin point

//         * @return

//         * FPoint2D

//         */

//        private Point2D getReprojectedPoint(Point2D ptOrigin){

//                Point2D ptDest = null;

//                ICoordTrans ct = getCoordTrans();

//                if(ct != null) {

//                    return ct.convert(ptOrigin, ptDest);

//                }

//                return ptOrigin;

//        }

           /**

     * Reprojects the new point

     * @param ptOrig

     * Origin point

     * @return

     * Point

     */

    private Point getReprojectedPoint(Point ptOrigin){

        Point ptDest = ((Point)ptOrigin.cloneGeometry());

        ICoordTrans ct = getCoordTrans();

        if(ct != null) {

            ptDest.reProject(ct);

        }

        return ptDest;

    }

        /**

         * @return the coordTrans

         */

        public ICoordTrans getCoordTrans() {

                return coordTrans;

        }

}