bevelpanel.java

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/*
 *  SSL-Explorer
 *
 *  Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
 *
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
			
package com.sshtools.ui.awt;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.LayoutManager;
import java.awt.Panel;

/**
 * <p>
 * <code>Panel</code> that draws a 3d border around the edge. The edge, or bevel, can be one of :-
 * </p>
 *
 * <ul>
 * <li><code>BevelPanel.NONE</code></li>
 * <li><code>BevelPanel.LOWERED</code></li>
 * <li><code>BevelPanel.RAISED</code></li>
 *
 * <p>
 * </p>
 *
 * @author $Author: lee $
 * @version $Revision: 1.3 $
 */
public class BevelPanel
    extends java.awt.Panel {
  //	Public static

  /**
   * No border
   */
  public static final int NONE = 0;

  /**
   * Lowered bevel
   */
  public static final int LOWERED = 1;

  /**
   * Raised bevel
   */
  public static final int RAISED = 2;

  // 	Private instance variables

  private int type;

  /**
   * Create a panel with the specified type of bevel.
   *
   * @param layout layout manager
   */
  public BevelPanel(int bevel) {
    this(bevel, null);
  }

  /**
   * Create a panel with the specified type of bevel.
   *
   * @param type bevel type
   * @param layout layout manager
   */
  public BevelPanel(int type, LayoutManager layout) {
    super();
    if (layout != null) {
      setLayout(layout);
    }
    setType(type);
  }

  /**
   * Set the bevel type. Can be one of :-
   * </p>
   *
   * <ul>
   * <li><code>BevelPanel.NONE</code></li>
   * <li><code>BevelPanel.LOWERED</code></li>
   * <li><code>BevelPanel.RAISED</code></li>
   *
   * @param type bevel type
   */
  public void setType(int type) {
    this.type = type;
    repaint();
  }

  /**
   * Return insets sufficient for bevel and label drawing space.
   */
  public Insets getInsets() {
    return new Insets(2, 2, 2, 2);
  }

  /*
   * (non-Javadoc)
   *
   * @see java.awt.Component#paint(java.awt.Graphics)
   */
  public void paint(Graphics g) {
    super.paint(g);
    Dimension d = getSize();
    Color si = getBackground().darker();
    Color so = si.darker();
    Color hi = getBackground().brighter();
    Color ho = hi.brighter();
    if (type == LOWERED) {
      g.setColor(si);
      g.drawLine(0, 0, 0, d.height - 1);
      g.drawLine(1, 0, d.width - 1, 0);
      g.setColor(so);
      g.drawLine(1, 1, 1, d.height - 2);
      g.drawLine(2, 1, d.width - 2, 1);
      g.setColor(ho);
      g.drawLine(1, d.height - 1, d.width - 1, d.height - 1);
      g.drawLine(d.width - 1, 1, d.width - 1, d.height - 2);
      g.setColor(hi);
      g.drawLine(2, d.height - 2, d.width - 2, d.height - 2);
      g.drawLine(d.width - 2, 2, d.width - 2, d.height - 3);
    }
    else {
      if (type == RAISED) {
        g.setColor(ho);
        g.drawLine(0, 0, 0, d.height - 2);
        g.drawLine(1, 0, d.width - 2, 0);
        g.setColor(hi);
        g.drawLine(1, 1, 1, d.height - 3);
        g.drawLine(2, 1, d.width - 3, 1);
        g.setColor(so);
        g.drawLine(0, d.height - 1, d.width - 1, d.height - 1);
        g.drawLine(d.width - 1, 0, d.width - 1, d.height - 2);
        g.setColor(si);
        g.drawLine(1, d.height - 2, d.width - 2, d.height - 2);
        g.drawLine(d.width - 2, 1, d.width - 2, d.height - 3);
      }
    }
  }
}