Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

package org.gvsig.raster.impl.grid.filter.enhancement;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.fmap.dal.coverage.dataset.Buffer;

import org.gvsig.fmap.dal.coverage.datastruct.Params;

import org.gvsig.fmap.dal.coverage.exception.FilterTypeException;

import org.gvsig.fmap.dal.coverage.grid.AbstractRasterFilterManager;

import org.gvsig.fmap.dal.coverage.grid.RasterFilter;

import org.gvsig.fmap.dal.coverage.grid.RasterFilterList;

/**

 * Gestor del filtro de conversi?n a escala de grises

 *

 * @author Nacho Brodin nachobrodin@gmail.com

 */

public class GrayScaleManager extends AbstractRasterFilterManager {

        public static String   ID = "GrayScale";

        public String getManagerID() {

                return ID;

        }

        public static void register() {

                AbstractRasterFilterManager.register(ID, GrayScaleManager.class);

        }

        public boolean isDataTypeSupported(int dataType) {

                if(dataType != Buffer.TYPE_BYTE)

                        return false;

                return true;

        }

        public Class<?> getFilterClassByID(String id) {

                if( id.compareTo("grayscale") == 0)

                        return GrayScaleFilter.class;

                return null;

        }

        /**

         * Constructor.

         * Asigna la lista de filtros y el managener global.

         *

         * @param filterListManager

         */

        public GrayScaleManager(RasterFilterList filterList) {

                super(filterList);

        }

        /**

         * A?ade un filtro de conversi?n de balance de color RGB.

         * @param type. par?metro para el filtro que indica que banda o combinaci?n de

         * estas es usada para la conversi?n a escala de gris. El valor de este par?mtro

         * est? definido en las constantes de la clase GrayScaleFilter

         * @throws FilterTypeException

         */

        public void addGrayScaleFilter(int type) throws FilterTypeException {

                RasterFilter filter = new GrayScaleByteFilter();

                if (filter != null) {

                        filter.addParam("typeBand", new Integer(type));

                        getFilterList().add(filter);

                }

        }

        public List<Class<?>> getRasterFilterList() {

                List<Class<?>> filters = new ArrayList<Class<?>>();

                filters.add(GrayScaleFilter.class);

                return filters;

        }

        public void addFilter(Class<?> classFilter, Params params) throws FilterTypeException {

                if (classFilter.equals(GrayScaleFilter.class)) {

                        int type = 0;

                        for (int i = 0; i < params.getNumParams(); i++) {

                                if (params.getParam(i).getId().equals("typeBand"))

                                        type = ((Integer) params.getParam(i).getDefaultValue()).intValue();

                        }

                        addGrayScaleFilter(type);

                }

        }

        public RasterFilter createFilter(Params params) {

                Integer type = ((Integer) params.getParamById("typeBand").getDefaultValue());

                RasterFilter filter = new GrayScaleByteFilter();

                filter.addParam("typeBand", type);

                return filter;

        }

        public void addFilter(Params params) throws FilterTypeException {

                addFilter(GrayScaleFilter.class, params);

        }

}