Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.labeling.placements;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import java.util.ArrayList;

import org.gvsig.fmap.geom.Geometry;

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

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

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

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelClass;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.IPlacementConstraints;

import org.gvsig.symbology.fmap.mapcontext.rendering.legend.styling.LabelLocationMetrics;

import org.gvsig.tools.task.Cancellable;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class MarkerPlacementOnPoint implements ILabelPlacement{

        private Logger logger = LoggerFactory.getLogger(MarkerPlacementOnPoint.class);

        public ArrayList<LabelLocationMetrics> guess(

                        ILabelClass lc,

                        Geometry shp,

                        IPlacementConstraints placementConstraints,

                        double cartographicSymbolSize, Cancellable cancel) {

                if (cancel.isCanceled()) {

            return CannotPlaceLabel.NO_PLACES;

        }

                ArrayList<LabelLocationMetrics> guessed = new ArrayList<LabelLocationMetrics>();

                Point cen = null;

                try {

                        cen = shp.centroid();

                } catch (Exception ex) {

                        logger.error("While getting centroid", ex);

                }

                Point2D p = new Point2D.Double(cen.getX(), cen.getY());

                Rectangle2D bounds = lc.getBounds();

                //FIXME: Con este posicionamiento, es identico al MarkerCenteredAtPoint

                //pero es as? como lo hacen otros programas

                //(tal vez, hubo una confusi?n por el nombre de la constante ON_TOP_OF_THE_POINT).

                //Entonces sobrar?a el posicionamiento MarkerCenteredAtPoint debiendose utilizar siempre ?ste.

                p.setLocation(p.getX() - (bounds.getWidth()*0.5), p.getY() - (bounds.getHeight()*0.5));// - 2);

                guessed.add(new LabelLocationMetrics(

                                p, 0, true));

                return guessed;

        }

    @Override

        public ArrayList<LabelLocationMetrics> guess(

                        ILabelClass lc,

                        Geometry geom,

                        IPlacementConstraints placementConstraints,

                        double cartographicSymbolSize, Cancellable cancel, ViewPort vp) {

                if (cancel.isCanceled()) return CannotPlaceLabel.NO_PLACES;

                Geometry shp = geom.cloneGeometry();

                shp.transform(vp.getAffineTransform());

                ArrayList<LabelLocationMetrics> guessed =

                                new ArrayList<LabelLocationMetrics>();

                Point cen = null;

                try {

                        cen = shp.centroid();

                } catch (Exception ex) {

                        logger.error("While getting centroid", ex);

                }

                Point2D p = new Point2D.Double(cen.getX(), cen.getY());

                Rectangle2D bounds = lc.getBounds();

                //FIXME: Con este posicionamiento, es identico al MarkerCenteredAtPoint

                //pero es as? como lo hacen otros programas

                //(tal vez, hubo una confusi?n por el nombre de la constante ON_TOP_OF_THE_POINT).

                //Entonces sobrar?a el posicionamiento MarkerCenteredAtPoint debiendose utilizar siempre ?ste.

                p.setLocation(p.getX() - (bounds.getWidth()*0.5), p.getY() - bounds.getHeight()*0.5);// - 2);

                guessed.add(new LabelLocationMetrics(

                                p, 0, true));

                return guessed;

        }

    @Override

        public boolean isSuitableFor(

                        IPlacementConstraints placementConstraints,

                        int shapeType) {

        GeometryManager geomManager = GeometryLocator.getGeometryManager();

        if( geomManager.isSubtype(TYPES.POINT, shapeType) ) {

                        return placementConstraints != null && placementConstraints.isOnTopOfThePoint();

                } else{

                        return false;

                }

        }

}