| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2007 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.

 */

package org.gvsig.raster.grid.filter.bands;

import org.gvsig.raster.buffer.RasterBuffer;

import org.gvsig.raster.dataset.IBuffer;

import org.gvsig.raster.dataset.Params;

import org.gvsig.raster.grid.GridPalette;

import org.gvsig.raster.grid.filter.RasterFilter;

/**

 * <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>

 *

 * @version 06/06/2007

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

 */

public class ColorTableFilter extends RasterFilter {

        protected IBuffer      rasterAlpha  = null;

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

        protected GridPalette  colorTable   = new GridPalette();

        /**

         * Constructor

         */

        public ColorTableFilter() {

                super();

                setName(names[0]);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.grid.filter.RasterFilter#pre()

         */

        public void pre() {

                exec = true;

                raster = (RasterBuffer) params.get("raster");

                if(raster != null) {

                        height = raster.getHeight();

                        width = raster.getWidth();

                        rasterResult = RasterBuffer.getBuffer(IBuffer.TYPE_BYTE, raster.getWidth(), raster.getHeight(), 3, true);

                        rasterAlpha = RasterBuffer.getBuffer(IBuffer.TYPE_BYTE, raster.getWidth(), raster.getHeight(), 1, true);

                }

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

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.grid.filter.RasterFilter#getGroup()

         */

        public String getGroup() {

                return "radiometrico";

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.grid.filter.RasterFilter#getNames()

         */

        public String[] getNames() {

                return names;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.grid.filter.RasterFilter#getResult(java.lang.String)

         */

        public Object getResult(String name) {

                if (name.equals("raster"))

                        return (Object) this.rasterResult;

                return null;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.grid.filter.RasterFilter#getUIParams(java.lang.String)

         */

        public Params getUIParams(String nameFilter) {

                Params params = new Params();

                params.setParam("colorTable",

                                new GridPalette(colorTable),

                                -1,

                                null);

                return params;

        }

        public void post() {

                mergeBufferTransparency(rasterAlpha);

                // En caso de que nadie apunte a raster, se liberar? su memoria.

                raster = null;

        }

        public void process(int x, int y) {

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.grid.filter.RasterFilter#getOutRasterDataType()

         */

        public int getOutRasterDataType() {

                return IBuffer.TYPE_BYTE;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.grid.filter.RasterFilter#isVisible()

         */

        public boolean isVisible() {

                return false;

        }

        /**

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

         * @return GridPalette

         */

        public GridPalette getColorTable() {

                return colorTable;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.grid.filter.RasterFilter#getInRasterDataType()

         */

        public int getInRasterDataType() {

                return 0;

        }

}