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.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 MarkerCenteredAtPoint implements ILabelPlacement {

        private static Logger logger =

                        LoggerFactory.getLogger(MarkerCenteredAtPoint.class);

    @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 e) {

                        logger.warn("While gentting 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);

                guessed.add(new LabelLocationMetrics(

                                p, 0, true));

                return guessed;

        }

    @Override

        public boolean isSuitableFor(IPlacementConstraints placementConstraints,

                        int shapeType) {

                return false;

        }

}