01: /**
02: * ===========================================
03: * JFreeReport : a free Java reporting library
04: * ===========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * WindowSizeLimiter.java
27: * ------------
28: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
29: */package org.jfree.report.modules.gui.commonswing;
30:
31: import java.awt.Component;
32: import java.awt.Dimension;
33: import java.awt.event.ComponentAdapter;
34: import java.awt.event.ComponentEvent;
35:
36: /**
37: * A small helper class to limit the maximum size of an element to the elements maximum
38: * size. If the element is resized, the defined maximum size is enforced on the element.
39: *
40: * @author Thomas Morgner
41: */
42: public class WindowSizeLimiter extends ComponentAdapter {
43: /**
44: * The current source.
45: */
46: private Object currentSource;
47:
48: /**
49: * Default-Constructor.
50: */
51: public WindowSizeLimiter() {
52:
53: }
54:
55: /**
56: * Invoked when the component's size changes.
57: *
58: * @param e the event.
59: */
60: public void componentResized(final ComponentEvent e) {
61: if (e.getSource() == currentSource) {
62: return;
63: }
64:
65: if (e.getSource() instanceof Component) {
66: currentSource = e.getSource();
67: final Component c = (Component) e.getSource();
68: final Dimension d = c.getMaximumSize();
69: final Dimension s = c.getSize();
70: if (s.width > d.width) {
71: s.width = d.width;
72: }
73: if (s.height > d.height) {
74: s.height = d.height;
75: }
76: c.setSize(s);
77: currentSource = null;
78: }
79:
80: }
81: }
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