Application: gvSIG desktop

 *

 * 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

 */

import java.awt.geom.Point2D;

import org.cresques.cts.IDatum;

import org.cresques.cts.IProjection;

import org.cresques.cts.gt2.CoordSys;

import org.cresques.cts.gt2.CoordTrans;

	/**

	 * Coordinates Transformer

	 */

	private CoordTrans coordTrans;	

	/**

	 * @param projection

	 * Server projection

	 */

	public FeatureLoader(String sProjection){

		com.iver.cit.gvsig.gui.View activeView = 

			(com.iver.cit.gvsig.gui.View) PluginServices.getMDIManager().getActiveView();

		IProjection projection = ProjectionPool.get(sProjection);

		if (projection == null){

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

		}

		coordTrans=  new CoordTrans((CoordSys) projection,

				(CoordSys) 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,Query query) {

		addAndDrawLabel(feature,

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

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

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

			focusCenter(feature);

		}        

	/**

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

	 * @param feature

	 * Feature that contains the coordinates

	 */

	private void focusCenter(Feature feature){

		com.iver.cit.gvsig.gui.View activeView = 

		IDatum datum = activeView.getProjection().getDatum();

		Point2D point = getReprojectedPoint(feature.getCoordinates());

		Rectangle2D extent;

		if (datum.toString().indexOf("European_Datum_1950") > 0){

			extent = new Rectangle2D.Double(point.getX() - 5000,

					point.getY() - 5000,

					10000,

					10000);

		}else{//WGS_1984

			extent = new Rectangle2D.Double(point.getX() - 0.05,

					point.getY() - 0.05,

					0.1,

					0.1);

		}  		

		activeView.getMapControl().getViewPort().setExtent(extent);

	} 

	/**

	 * 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){

		com.iver.cit.gvsig.gui.View activeView = 

		GraphicLayer lyr = activeView.getMapControl().getMapContext().getGraphicsLayer();

		if (isRemoveOldClicked){

			lyr.clearAllGraphics();

		}	

		if (isMarkedPlaceClicked){

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

			IGeometry geom = ShapeFactory.createPoint2D(new FPoint2D(getReprojectedPoint(feature.getCoordinates())));

			FGraphicLabel theLabel = new FGraphicLabel(geom, idSymbol, feature.getName());

			lyr.addGraphic(theLabel);

			DeleteSearchesModule.setVisible();

			PluginServices.getMainFrame().enableControls();

		}			

		activeView.getMapControl().drawGraphics();

		//This line could look stupid, but is necessary because grawGraphics does't

		//remove the old Graphics searched

		activeView.getMapControl().getViewPort().setExtent(activeView.getMapControl().getViewPort().getExtent());

	}

	/**

	 * Creates a FSymbol

	 * @return

	 * FSymbol

	 */

	private FSymbol getSymbol(){

		FSymbol theSymbol = new FSymbol(FConstant.SYMBOL_TYPE_TEXT); 

		theSymbol.setColor(Color.RED);

		theSymbol.setStyle(FConstant.SYMBOL_STYLE_MARKER_CIRCLE);

		theSymbol.setFontColor(Color.BLACK);

		theSymbol.setSizeInPixels(true);

		theSymbol.setSize(10);

		return theSymbol;

	}

	/**

	 * Reprojects the new point

	 * @param ptOrig

	 * Origin point

	 * @return

	 * FPoint2D

	 */

	private Point2D getReprojectedPoint(Point2D ptOrigin){

		Point2D ptDest = null;

		return getCoordTrans().convert(ptOrigin, ptDest);

	}

	/**

	 * @return the coordTrans

	 */

	public CoordTrans getCoordTrans() {

		return coordTrans;

	}

}