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.band;

import org.gvsig.fmap.dal.coverage.RasterLocator;

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

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

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

import org.gvsig.fmap.dal.coverage.grid.filter.BaseRasterFilter;

import org.gvsig.fmap.dal.coverage.store.props.ColorInterpretation;

import org.gvsig.fmap.dal.coverage.store.props.ColorTable;

import org.gvsig.raster.impl.store.ParamsImpl;

import org.gvsig.raster.impl.store.properties.DataStoreColorTable;

/**

 * <P>

 * Clase base para los filtros de tabla de color. Siempre gastar? la banda cero

 * del raster para aplicar el filtro ya que la aplicaci?n de tablas suele tener

 * sentido solo en raster de una sola banda.

 * </P>

 * <P>

 * La salida siempre es un ARGB.

 * </P>

 *

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class ColorTableFilter extends BaseRasterFilter {

        public static String[]          names        = new String[] { "colortable" };

        protected DataStoreColorTable   colorTable   = new DataStoreColorTable();

        protected boolean               hasAlpha     = false; 

        /**

         * Constructor

         */

        public ColorTableFilter() {

                super();

                setName(names[0]);

        }

        public void pre() throws FilterAddException {

                super.pre();

                colorTable = ((DataStoreColorTable) params.get("colorTable"));

                hasAlpha = colorTable.hasAlpha();

                //El filtro de tabla de color convierte a ARGB a partir de paleta

                ColorInterpretation ci = RasterLocator.getManager().getDataStructFactory().createColorInterpretation(

                                new String[]{ColorInterpretation.RED_BAND,

                                                ColorInterpretation.GREEN_BAND,

                                                ColorInterpretation.BLUE_BAND,

                                                ColorInterpretation.ALPHA_BAND});

                transparency.setColorInterpretation(ci);

                transparency.activeTransparency();

                createARGBBufferResult();

        }

        public String getGroup() {

                return "radiometrico";

        }

        public String[] getNames() {

                return names;

        }

        public Params getUIParams(String nameFilter) {

                Params params = new ParamsImpl();

                params.setParam("colorTable",

                                new DataStoreColorTable(colorTable),

                                -1,

                                null);

                return params;

        }

        public void post() {

        }

        public void process(int x, int y) {

        }

        public int getOutRasterDataType() {

                return Buffer.TYPE_BYTE;

        }

        public boolean isVisible() {

                return false;

        }

        /**

         * Obtiene la tabla de color que se usar? para la aplicaci?n del filtro

         * @return GridPalette

         */

        public ColorTable getColorTable() {

                if ((colorTable == null) || (colorTable.getColorItems() == null))

                        colorTable = ((DataStoreColorTable) params.get("colorTable"));

                return colorTable;

        }

        public int getInRasterDataType() {

                return 0;

        }

        /**

         * Define la tabla de color

         * @param colorTable the colorTable to set

         */

        public void setColorTable(ColorTable colorTable) {

                this.colorTable = (DataStoreColorTable)colorTable;

        }

}