Application: gvSIG desktop

/* 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.gui.preferences.combocolortable;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.util.ArrayList;

import org.gvsig.gui.beans.listview.IIconPaint;

import org.gvsig.raster.datastruct.ColorItem;

import org.gvsig.raster.datastruct.ColorTable;

/**

 * Clase para dibujar los iconos del ListViewComponent del panel de color. Se

 * puede indicar si la paleta esta seleccionada y si se dibuja con

 * interpolaciones.

 * 

 * @version 29/06/2007

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

 */

public class PreferenceColorTableIconPainter implements IIconPaint {

        private ColorTable colorTable;

        /**

         * Construye un ColorTablePaint con una tabla de color pasada por parametro

         * @param colorTable

         */

        public PreferenceColorTableIconPainter(ColorTable colorTable) {

                this.colorTable = colorTable;

        }

        /**

         * Define si los valores estan interpolados o no entre si

         * @param value

         */

        public void setInterpolated(boolean value) {

                colorTable.setInterpolated(value);

        }

        /**

         * Obtiene el array de los colores de la paleta de color

         * @return

         */

        public ArrayList getColorItems() {

                return colorTable.getColorItems();

        }

        /**

         * Obtiene el ColorTable

         * @return

         */

        public ColorTable getColorTable() {

                return colorTable;

        }

        /**

         * Especificar los colores de la tabla de color, definiendo si estan los

         * valores interpolados y si la paleta se comprimira o no.

         * @param value

         * @param interpolated

         * @param compress

         */

        public void setColorItems(ArrayList value, boolean interpolated, boolean compress) {

                colorTable.createPaletteFromColorItems(value, compress);

                setInterpolated(interpolated);

        }

        /**

         * Metodo de pintado de la tabla de color

         * @param g

         * @param isSelected

         */

        public void paint(Graphics2D g, boolean isSelected) {

                Rectangle area = g.getClipBounds();

                int x1 = area.x;

                int x2 = area.x + area.width - 1;

                Color bgColor = new Color(224, 224, 224);

                for (int i = 0; (i * 4) <= area.width; i++) {

                        for (int j = 0; (j * 4) <= area.height; j++) {

                                if ((i + j) % 2 == 0)

                                        g.setColor(Color.white);

                                else

                                        g.setColor(bgColor);

                                g.fillRect(area.x + 1 + i * 4, area.y + 1 + j * 4, 4, 4);

                        }

                }                

                if (colorTable.getColorItems().size() >= 1) {

                        double min = ((ColorItem) colorTable.getColorItems().get(0)).getValue();

                        double max = ((ColorItem) colorTable.getColorItems().get(colorTable.getColorItems().size() - 1)).getValue();

                        for (int i = area.x; i < (area.x + area.width); i++) {

                                double pos = min + (((max - min) * (i - area.x)) / (area.width - 2));

                                byte[] col3 = colorTable.getRGBAByBand(pos);

                                g.setColor(new Color(col3[0] & 0xff, col3[1] & 0xff, col3[2] & 0xff, col3[3] & 0xff));

                                g.drawLine(i, area.y, i, area.y + area.height);

                        }

                } else {

                        g.setColor(new Color(224, 224, 224));

                        g.fillRect(x1, area.y, x2 - x1, area.height - 1);

                }

                if (isSelected)

                        g.setColor(Color.black);

                else

                        g.setColor(new Color(96, 96, 96));

                g.drawRect(x1, area.y, x2 - x1, area.height - 1);

        }        

}