Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.gui;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.util.ArrayList;

import java.util.List;

public class DefaultColorTablePainter implements ColorTablePainter {

        private class ColorItem {

                Color color = null;

                double value =0;

                ColorItem(double value, Color color) {

                        this.color = color;

                        this.value = value;

                }

                Color getColor() {

                        return color;

                }

                double getValue() {

                        return value;

                }

        }

        List<ColorItem> colorItems = null;

        DefaultColorTablePainter() {

                this.colorItems = new ArrayList<ColorItem>();

                int n = 256;

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

                Color color = Color.getHSBColor((float) i / (float) n, 0.85f, 1.0f);

                this.colorItems.add( new ColorItem(i,color));

        }

        }

        public Color[] getColors() {

                Color[] colors = new Color[colorItems.size()];

                for (int i = 0; i < colors.length; i++) {

                        colors[i] = ((ColorItem) colorItems.get(i)).getColor();

                }

                return colors;        

        }

        public String getTableName() {

                return "Default colot table";

        }

        public void paint(Graphics2D g, boolean isSelected) {

                Rectangle area = g.getClipBounds();

                area.y=0;

                area.x=0;

                int x1 = area.x;

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

                if( this.colorItems.size() > 0 ) {

                        double min = colorItems.get(0).getValue();

            double max = colorItems.get(colorItems.size() - 1).getValue();

            for (int i = area.x; i < (area.x + area.width - 1); i++) {

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

                                g.setColor(this.colorItems.get((int) pos).getColor());

                                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);

        }

}