Application: gvSIG desktop

/*

 * Copyright (c) 2001-2005, Gaudenz Alder

 *

 * All rights reserved.

 *

 * This file is licensed under the JGraph software license, a copy of which

 * will have been provided to you in the file LICENSE at the root of your

 * installation directory. If you are unable to locate this file please

 * contact JGraph sales for another copy.

 */

package org.gvsig.fmap.dal.swing.impl.visualdbmodeler;

import java.awt.Color;

import java.awt.Component;

import java.awt.Graphics;

import java.awt.Insets;

import java.io.Serializable;

import javax.swing.border.Border;

/**

 * Border with a drop shadow.

 */

public class ShadowBorder implements Border, Serializable

{

        /**

         *

         */

        private static final long serialVersionUID = 6854989457150641240L;

        private Insets insets;

        public static ShadowBorder sharedInstance = new ShadowBorder();

        private ShadowBorder()

        {

                insets = new Insets(0, 0, 2, 2);

        }

        public Insets getBorderInsets(Component c)

        {

                return insets;

        }

        public boolean isBorderOpaque()

        {

                return false;

        }

        public void paintBorder(Component c, Graphics g, int x, int y, int w, int h)

        {

                // choose which colors we want to use

                Color bg = c.getBackground();

                if (c.getParent() != null)

                {

                        bg = c.getParent().getBackground();

                }

                if (bg != null)

                {

                        Color mid = bg.darker();

                        Color edge = average(mid, bg);

                        g.setColor(bg);

                        g.drawLine(0, h - 2, w, h - 2);

                        g.drawLine(0, h - 1, w, h - 1);

                        g.drawLine(w - 2, 0, w - 2, h);

                        g.drawLine(w - 1, 0, w - 1, h);

                        // draw the drop-shadow

                        g.setColor(mid);

                        g.drawLine(1, h - 2, w - 2, h - 2);

                        g.drawLine(w - 2, 1, w - 2, h - 2);

                        g.setColor(edge);

                        g.drawLine(2, h - 1, w - 2, h - 1);

                        g.drawLine(w - 1, 2, w - 1, h - 2);

                }

        }

        private static Color average(Color c1, Color c2)

        {

                int red = c1.getRed() + (c2.getRed() - c1.getRed()) / 2;

                int green = c1.getGreen() + (c2.getGreen() - c1.getGreen()) / 2;

                int blue = c1.getBlue() + (c2.getBlue() - c1.getBlue()) / 2;

                return new Color(red, green, blue);

        }

        public static ShadowBorder getSharedInstance()

        {

                return sharedInstance;

        }

}