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.util.ArrayList;

import org.gvsig.fmap.geom.Geometry;

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

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;

public class MultiShapePlacement implements ILabelPlacement {

        private final ILabelPlacement pointPlacement;

        private final ILabelPlacement linePlacement;

        private final ILabelPlacement polygonPlacement;

        /**

         * Creates a new instance of MultiShapePlacement initializing the respective

         * placements to those passed as parameters. Null values are allowed for

         * the parameters and will cause that no label will be placed when the

         * geometry belongs to such null values.

         *

         * @param pointPlacement, the placement for points

         * @param linePlacement, the placement for lines

         * @param polygonPlacement, the placement for polygons

         */

        public MultiShapePlacement(

                        ILabelPlacement pointPlacement,

                        ILabelPlacement linePlacement,

                        ILabelPlacement polygonPlacement) {

                this.pointPlacement = pointPlacement;

                this.linePlacement = linePlacement;

                this.polygonPlacement = polygonPlacement;

        }

    @Override

        public ArrayList<LabelLocationMetrics> guess(

                        ILabelClass lc,

                        Geometry geom,

                        IPlacementConstraints placementConstraints,

                        double cartographicSymbolSize,

                        Cancellable cancel, ViewPort vp) {

                MultiShapePlacementConstraints pc =

                                (MultiShapePlacementConstraints) placementConstraints;

                GeometryType gt = geom.getGeometryType();

        if( gt.isTypeOf(TYPES.POINT) || gt.isTypeOf(TYPES.MULTIPOINT) ) {

            if( pointPlacement != null ) {

                return pointPlacement.guess(lc, geom, pc.getPointConstraints(), cartographicSymbolSize, cancel, vp);

            }

        } else if( gt.isTypeOf(TYPES.CURVE) || gt.isTypeOf(TYPES.MULTICURVE) ) {

            if( linePlacement != null ) {

                return linePlacement.guess(lc, geom, pc.getLineConstraints(), cartographicSymbolSize, cancel, vp);

            }

        } else if( gt.isTypeOf(TYPES.SURFACE) || gt.isTypeOf(TYPES.MULTISURFACE) ) {

            if( polygonPlacement != null ) {

                return polygonPlacement.guess(lc, geom, pc.getPolygonConstraints(), cartographicSymbolSize, cancel, vp);

            }

        }

        return CannotPlaceLabel.NO_PLACES;

        }

    @Override

        public boolean isSuitableFor(

                        IPlacementConstraints placementConstraints,

                        int shapeType) {

                // TODO shoud I also ask to each placement if it is suitable

                // for these constraints????

                return (shapeType == TYPES.GEOMETRY || shapeType == TYPES.AGGREGATE);

        }

}