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/* 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.

 */

package org.gvsig.raster.datastruct.io.formats;

import java.awt.Color;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.util.ArrayList;

import org.gvsig.raster.datastruct.ColorItem;

import org.gvsig.raster.datastruct.ColorTable;

import org.gvsig.raster.datastruct.io.RasterLegendIO;

/**

 * Clase GimpPalettes sirve para importar y exportar tablas de color de Gimp.

 * Los ficheros de Paletas de gimp tienen la extension .gpl

 *

 * @version 03/12/2007

 * @author BorSanZa - Borja S?nchez Zamorano (borja.sanchez@iver.es)

 */

public class GimpPalettes extends RasterLegendIO {

        /**

         * Devuelve el ColorItem asociado a una linea de un fichero de tablas de color

         * de Gimp

         * @param strings

         * @param pos

         * @return

         */

        private ColorItem parseColorItem(String[] strings) {

                if (strings.length < 4)

                        return null;

                ColorItem item = new ColorItem();

                item.setInterpolated(100);

                item.setColor(new Color(

                                Integer.valueOf(strings[1]).intValue(),

                                Integer.valueOf(strings[2]).intValue(),

                                Integer.valueOf(strings[3]).intValue()

                        ));

                return item;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.datastruct.io.RasterLegendIO#read(java.io.File)

         */

        public ColorTable read(File input) throws IOException {

                ArrayList colorItems = new ArrayList();

                ColorTable colorTable = new ColorTable();

                try {

                        BufferedReader reader = new BufferedReader(new FileReader(input));

                        String currentLine;

                        int cont = 0;

                        while ((currentLine = reader.readLine()) != null) {

                                if (currentLine.charAt(0) == '#')

                                        continue;

                                if (cont == 1)

                                        colorTable.setName(currentLine.substring(6));

                                if (cont > 1) {

                                        String[] strings = (" " + currentLine).split("\\s+");

                                        ColorItem colorItem = parseColorItem(strings);

                                        if (colorItem == null)

                                                continue;

                                        strings = (" " + currentLine).split("\\s+\\d+\\s+\\d+\\s+\\d+\\s+");

                                        if (!strings[1].equals("Untitled"))

                                                colorItem.setNameClass(strings[1]);

                                        else

                                                colorItem.setNameClass("");

                                        colorItem.setValue(cont - 2);

                                        colorItems.add(colorItem);

                                }

                                cont++;

                        }

                        reader.close();

                } catch (IOException ex) {

                        throw new IOException();

                }

                colorTable.createPaletteFromColorItems(colorItems, false);

                return colorTable;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.datastruct.io.RasterLegendIO#write(org.gvsig.raster.datastruct.ColorTable, java.io.File)

         */

        public void write(ColorTable colorTable, File output) throws IOException {

                ArrayList colorItems = colorTable.getColorItems();

                try {

                        BufferedWriter writer = new BufferedWriter(new FileWriter(output));

                        writer.write("GIMP Palette\n");

                        writer.write("Name: " + colorTable.getName() + "\n");

                        writer.write("#\n");

                        for (int i = 0; i < colorItems.size(); i++) {

                                String line = "";

                                ColorItem item1 = (ColorItem) colorItems.get(i);

                                Color color = item1.getColor();

                                line += color.getRed() + " ";

                                line += color.getGreen() + " ";

                                line += color.getBlue() + "\t";

                                if ((item1.getNameClass() != null) && (item1.getNameClass().length() > 0))

                                        line += item1.getNameClass() + "\n";

                                else

                                        line += "Untitled\n";

                                writer.write(line);

                        }

                        writer.close();

                } catch (IOException ex) {

                        throw new IOException();

                }

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.datastruct.io.RasterLegendIO#getDescription()

         */

        public String getDescription() {

                return "Gimp Palettes";

        }

}