001 /** 002 * ======================================== 003 * JFreeReport : a free Java report library 004 * ======================================== 005 * 006 * Project Info: http://reporting.pentaho.org/ 007 * 008 * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors. 009 * 010 * This library is free software; you can redistribute it and/or modify it under the terms 011 * of the GNU Lesser General Public License as published by the Free Software Foundation; 012 * either version 2.1 of the License, or (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 016 * See the GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public License along with this 019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 020 * Boston, MA 02111-1307, USA. 021 * 022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 023 * in the United States and other countries.] 024 * 025 * ------------ 026 * $Id: WindowSizeLimiter.java 3048 2007-07-28 18:02:42Z tmorgner $ 027 * ------------ 028 * (C) Copyright 2000-2005, by Object Refinery Limited. 029 * (C) Copyright 2005-2007, by Pentaho Corporation. 030 */ 031 032 package org.jfree.report.modules.gui.swing.common; 033 034 import java.awt.Component; 035 import java.awt.Dimension; 036 import java.awt.event.ComponentAdapter; 037 import java.awt.event.ComponentEvent; 038 039 /** 040 * A small helper class to limit the maximum size of an element to the elements maximum 041 * size. If the element is resized, the defined maximum size is enforced on the element. 042 * 043 * @author Thomas Morgner 044 */ 045 public class WindowSizeLimiter extends ComponentAdapter 046 { 047 /** 048 * The current source. 049 */ 050 private Object currentSource; 051 052 /** 053 * Default-Constructor. 054 */ 055 public WindowSizeLimiter() 056 { 057 058 } 059 060 /** 061 * Invoked when the component's size changes. 062 * 063 * @param e the event. 064 */ 065 public void componentResized (final ComponentEvent e) 066 { 067 if (e.getSource() == currentSource) 068 { 069 return; 070 } 071 072 if (e.getSource() instanceof Component) 073 { 074 currentSource = e.getSource(); 075 final Component c = (Component) e.getSource(); 076 final Dimension d = c.getMaximumSize(); 077 final Dimension s = c.getSize(); 078 if (s.width > d.width) 079 { 080 s.width = d.width; 081 } 082 if (s.height > d.height) 083 { 084 s.height = d.height; 085 } 086 c.setSize(s); 087 currentSource = null; 088 } 089 090 } 091 }