Application: gvSIG desktop

/* 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 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.SUBTYPES;

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

import org.gvsig.fmap.geom.GeometryLocator;

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

import org.gvsig.fmap.geom.type.GeometryType;

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;

/**

 *

 * PolygonPlacementOnCentroid.java

 *

 *

 * @author jaume dominguez faus - jaume.dominguez@iver.es Apr 1, 2008

 *

 */

//public class PolygonPlacementOnCentroid extends MarkerCenteredAtPoint implements ILabelPlacement {

public class PolygonPlacementOnCentroid extends MarkerPlacementOnPoint

implements ILabelPlacement {

        private static final Logger logger = LoggerFactory.getLogger(

                        PolygonPlacementOnCentroid.class);

        public ArrayList<LabelLocationMetrics> guess(

                        ILabelClass lc, Geometry geom,

                        IPlacementConstraints placementConstraints,

                        double cartographicSymbolSize, Cancellable cancel, ViewPort vp) {

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

                Point cen = null;

                try {

                        cen = geom.centroid();

                } catch (Exception e) {

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

                }

                return super.guess(

                                lc,

                                cen,

                                placementConstraints,

                                cartographicSymbolSize, cancel,vp);

        }

        public ArrayList<LabelLocationMetrics> guess(

                        ILabelClass lc, Geometry geom,

                        IPlacementConstraints placementConstraints,

                        double cartographicSymbolSize, Cancellable cancel) {

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

                ArrayList<LabelLocationMetrics> guessed =

                                new ArrayList<LabelLocationMetrics>();

                Point cen = null;

                try {

                        cen = geom.centroid();

                } catch (Exception e) {

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

                }

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

                Rectangle2D bounds = lc.getBounds();

                p.setLocation(

                                p.getX() - (bounds.getWidth()*0.5),

                                p.getY() - (bounds.getHeight()*0.5));// - 2);

                guessed.add(new LabelLocationMetrics(p, 0, true));

                return guessed;

        }

        public boolean isSuitableFor(

                        IPlacementConstraints placementConstraints,

                        int shapeType) {

                GeometryType gt = null;

                try {

                        gt = GeometryLocator.getGeometryManager().getGeometryType(

                                        shapeType, SUBTYPES.GEOM2D);

                } catch (Exception e) {

                        logger.error("While getting geo type.", e);

                }

                if (gt.isTypeOf(TYPES.SURFACE) || shapeType == TYPES.MULTISURFACE) {

                        return (placementConstraints.isHorizontal()

                                        &&

                                        !placementConstraints.isFitInsidePolygon());

                }

                return false;

        }

}