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.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.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;

/**

 *

 * LinePlacementAtBest.java

 *

 *

 * @author jaume dominguez faus - jaume.dominguez@iver.es Dec 17, 2007

 *

 */

public class LinePlacementAtBest extends CompoundLabelPlacement {

        private static Logger logger = LoggerFactory.getLogger(LinePlacementAtBest.class);

        static private ILabelPlacement[] pl = new ILabelPlacement[] {

                new LinePlacementInTheMiddle(),

                new LinePlacementAtExtremities()

        };

        public LinePlacementAtBest() {

                super(pl);

                // a patch just to keep in mind the end of the lines

        }

        public ArrayList<LabelLocationMetrics> guess(ILabelClass lc,

                        Geometry geom, IPlacementConstraints constraints,

                        double cartographicSymbolSize, Cancellable cancel, ViewPort vp) {

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

                ArrayList<LabelLocationMetrics> llc = super.guess(lc, geom, constraints, cartographicSymbolSize, cancel,vp);

                if (constraints instanceof AbstractPlacementConstraints) {

                        AbstractPlacementConstraints clone;

                        try {

                                clone = (AbstractPlacementConstraints) ((AbstractPlacementConstraints) constraints).clone();

                                clone.setLocationAlongTheLine(IPlacementConstraints.AT_THE_END_OF_THE_LINE);

                                llc.addAll(pl[1].guess(lc, geom, clone, cartographicSymbolSize, cancel,vp));

                        } catch (CloneNotSupportedException e) {

                                // this should never happen but

                                // anyway a warning does not hurt anyone

                                logger.info("Couldn't clone "+constraints.getClass().getName(), e);

                        }

                }

                return llc;

        }

        public boolean isSuitableFor(

                        IPlacementConstraints placementConstraints,

                        int shapeType) {

                GeometryType gt = null;

                try {

                        gt = GeometryLocator.getGeometryManager().getGeometryType(

                                        shapeType, Geometry.SUBTYPES.GEOM2D);

                } catch (Exception e) {

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

                }

                if (gt.isTypeOf(TYPES.CURVE)

                                || shapeType == TYPES.MULTICURVE) {

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

                } else {

                        return false;

                }

        }

}