Source for javax.swing.plaf.basic.BasicPopupMenuSeparatorUI

   1: /* BasicPopupMenuSeparatorUI.java --
   2:    Copyright (C) 2004 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package javax.swing.plaf.basic;
  40: 
  41: import java.awt.Color;
  42: import java.awt.Dimension;
  43: import java.awt.Graphics;
  44: import java.awt.Rectangle;
  45: 
  46: import javax.swing.JComponent;
  47: import javax.swing.JPopupMenu;
  48: import javax.swing.SwingUtilities;
  49: import javax.swing.plaf.ComponentUI;
  50: 
  51: /**
  52:  * The Basic Look and Feel UI delegate for JPopupMenu.Separator.
  53:  */
  54: public class BasicPopupMenuSeparatorUI extends BasicSeparatorUI
  55: {
  56:   /**
  57:    * Creates a new BasicPopupMenuSeparatorUI object.
  58:    */
  59:   public BasicPopupMenuSeparatorUI()
  60:   {
  61:     super();
  62:   }
  63: 
  64:   /**
  65:    * Creates a new UI delegate for the given JComponent.
  66:    *
  67:    * @param c The JComponent to create a delegate for.
  68:    *
  69:    * @return A new BasicPopupMenuSeparatorUI
  70:    */
  71:   public static ComponentUI createUI(JComponent c)
  72:   {
  73:     return new BasicPopupMenuSeparatorUI();
  74:   }
  75: 
  76:   /**
  77:    * The Popup Menu Separator has two lines. The top line will be
  78:    * painted using highlight color and the bottom using shadow color.
  79:    *
  80:    * @param g The Graphics object to paint with
  81:    * @param c The JComponent to paint.
  82:    */
  83:   public void paint(Graphics g, JComponent c)
  84:   {
  85:     if (! (c instanceof JPopupMenu.Separator))
  86:       return;
  87: 
  88:     Rectangle r = new Rectangle();
  89:     SwingUtilities.calculateInnerArea(c, r);
  90:     Color saved = g.getColor();
  91: 
  92:     int midAB = r.width / 2 + r.x;
  93:     int midAD = r.height / 2 + r.y;
  94: 
  95:     g.setColor(highlight);
  96:     g.drawLine(r.x, midAD, r.x + r.width, midAD);
  97: 
  98:     g.setColor(shadow);
  99:     g.drawLine(r.x, midAD + 1, r.x + r.width, midAD + 1);
 100:   }
 101: 
 102:   /**
 103:     * This method returns the preferred size of the
 104:     * JComponent.
 105:     *
 106:     * @param c The JComponent to measure.
 107:     *
 108:     * @return The preferred size.
 109:     */
 110:   public Dimension getPreferredSize(JComponent c)
 111:   {
 112:     return super.getPreferredSize(c);
 113:   }
 114: }