| gvSIG desktop 1

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

 *

 * Copyright (C) 2004 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.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.app.gui.styling;

import java.awt.Color;

import java.awt.Component;

import java.awt.Dimension;

import java.awt.GradientPaint;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import java.util.ArrayList;

import javax.swing.JComboBox;

import javax.swing.JComponent;

import javax.swing.JList;

import javax.swing.ListCellRenderer;

import org.gvsig.andami.PluginServices;

import org.gvsig.raster.datastruct.ColorItem;

import org.gvsig.raster.datastruct.ColorTable;

import org.gvsig.raster.datastruct.persistence.ColorTableLibraryPersistence;

/**

 * Creates a JComboBox where the user has the option to select different

 * colors.

 *

 * @autor jaume dominguez faus - jaume.dominguez@iver.es

 */

public class JComboBoxColorScheme extends JComboBox {

        private String palettesPath = System.getProperty("user.home") +

        File.separator +

        "gvSIG" +

        File.separator +

        "ColorSchemes";

        private boolean interpolated = false;

        private ArrayList fileList = new ArrayList();

        private ActionListener innerActionUpdateTooltip = new ActionListener() {

                public void actionPerformed(ActionEvent e) {

                        Object o = getSelectedItem();

                        if (o != null) {

                                ArrayList aux = (ArrayList) o;

                                setToolTipText((String) aux.get(0));

                        } else {

                                setToolTipText(PluginServices.getText(this, "select_a_color_scheme"));

                        }

                }

        };

        /**

         * Constructor method

         *

         * @param interpolateValues

         */

        public JComboBoxColorScheme(boolean interpolateValues) {

                super();

                interpolated = interpolateValues;

                setPreferredSize(new Dimension(150, 20));

                ArrayList fileList = ColorTableLibraryPersistence.getPaletteFileList(palettesPath);

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

                        ArrayList paletteItems = new ArrayList();

                        String paletteName = ColorTableLibraryPersistence.loadPalette(

                                                palettesPath,

                                                (String) fileList.get(i),

                                                paletteItems);

                        if (paletteItems.size() <= 0) {

                                continue;

                        }

                        ColorTable colorTable = new ColorTable();

                        colorTable.setName(paletteName);

                        colorTable.createPaletteFromColorItems(paletteItems, true);

                        colorTable.setInterpolated(interpolateValues);

                        ArrayList array = new ArrayList();

                        array.add(paletteName);

                        array.add(new ColorTablePaint(colorTable));

                        addItem(array);

                }

                addActionListener(innerActionUpdateTooltip);

                setRenderer(new ListCellRenderer() {

                        public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {

                                ArrayList array = (ArrayList) value;

                                ColorSchemeItemPainter paintItem = new ColorSchemeItemPainter((String) array.get(0), (ColorTablePaint) array.get(1), isSelected);

                                paintItem.setPreferredSize(getPreferredSize());

                                return paintItem;

                        }

                });

        }

        /**

         * Returns an array composed with the selected colors

         * @return

         */

        public ColorItem[] getSelectedColors() {

                Object o = getSelectedItem();

                if (o == null) {

                        return null;

                }

                ColorTable ct = ((ColorTablePaint) ((ArrayList) o).get(1)).colorTable;

                return (ColorItem[]) ct.getColorItems().toArray(new ColorItem[0]) ;

        }

        public void setSelectedColors(ColorItem[] colors) {

                fileList.clear();

                if (colors == null) {

                        setSelectedIndex(0);

                        return;

                }

                else {

                        for (int i = 0; i < getItemCount(); i++) {

                                fileList.add(getItemAt(i));

                        }

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

                                Object o = fileList.get(i);

                                ColorTable ct = ((ColorTablePaint) ((ArrayList) o).get(1)).colorTable;

                                ColorItem[] myColors = (ColorItem[]) ct.getColorItems().toArray(new ColorItem[0]) ;

                                boolean isEqual = true;

                                if(myColors.length == colors.length) {

                                        for (int j = 0; isEqual && j < myColors.length; j++) {

                                                Color c1 = myColors[j].getColor();

                                                Color c2 = colors[j].getColor();

                                                isEqual = c1.getRGB() == c2.getRGB() && c1.getAlpha() == c2.getAlpha();

                                        }

                                        if(isEqual) {

                                                setSelectedIndex(i);

                                                repaint();

                                                return;

                                        }

                                }

                        }

                        if(getItemCount()> 0) {

                                setSelectedItem(0);

                        }

                }

        }

        /**

         *

         * Class to paint a color palette in a box. It can be indicated if the palette

         * is selected and if it is painted with interpolations

         *

         * @version 30/07/2007

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

         */

        private class ColorTablePaint {

                private ColorTable colorTable;

                /**

                 * Build a ColorTablePaint with a color table (parameter or the method)

                 *

                 * @param colorTable

                 */

                public ColorTablePaint(ColorTable colorTable) {

                        this.colorTable = colorTable;

                }

                /**

                 * Defines if the values are interpolated between them or not.

                 *

                 * @param value

                 */

                public void setInterpolated(boolean value) {

                        colorTable.setInterpolated(value);

                }

                /**

                 * Obtains the color array of the color palette

                 *

                 * @return

                 */

                public ArrayList getColorItems() {

                        return colorTable.getColorItems();

                }

                /**

                 * Obtains the ColorTable

                 * @return

                 */

                public ColorTable getColorTable() {

                        return colorTable;

                }

                /**

                 * Specifies the colors of the color table, defining it the values are

                 * interpolated and if the palette will be compressed or not.

                 *

                 * @param value

                 * @param interpolated

                 * @param compress

                 */

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

                        colorTable.createPaletteFromColorItems(value, compress);

                        setInterpolated(interpolated);

                }

                /**

                 * Method to paint the color table

                 *

                 * @param g

                 * @param isSelected

                 */

                public void paint(Graphics2D g, boolean isSelected, Rectangle bounds) {

                        Rectangle area = bounds;

                        area.y=0;

                        area.x=0;

                        int x1 = area.x;

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

                        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));

                                        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);

                }

        }

        private class ColorSchemeItemPainter extends JComponent {

                private static final long serialVersionUID = -6448740563809113949L;

                private boolean isSelected = false;

                private ColorTablePaint colorTablePaint = null;

                /**

                 * Constructor method

                 *

                 * @param name

                 * @param colorTablePaint

                 * @param isSelected

                 */

                public ColorSchemeItemPainter(String name, ColorTablePaint colorTablePaint, boolean isSelected) {

                        super();

                        this.colorTablePaint = colorTablePaint;

                        this.isSelected = isSelected;

                        setToolTipText(name);

                }

                public void paintComponent(Graphics g) {

                        Graphics2D g2 = (Graphics2D) g;

                        if (isSelected) {

                                Color color1 = new Color(89, 153, 229);

                                Color color2 = new Color(31, 92, 207);

                                g2.setPaint(new GradientPaint(0, 1, color1, 0, getHeight() - 1, color2, false));

                                g2.fillRect(0, 1, getWidth(), getHeight() - 1);

                                g2.setColor(new Color(61, 123, 218));

                                g2.drawLine(0, 0, getWidth(), 0);

                                g2.setColor(Color.white);

                        } else {

                                g2.setColor(Color.white);

                                g2.fillRect(0, 0, getWidth(), getHeight());

                                g2.setColor(Color.black);

                        }

                        colorTablePaint.paint(g2, isSelected, getBounds());

                }

        }

}