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Java > Open Source Codes > org > aspectj > util > gui > CenterHelper


1 /* -*- Mode: JDE; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2  *
3  * This file is part of the debugger and core tools for the AspectJ(tm)
4  * programming language; see http://aspectj.org
5  *
6  * The contents of this file are subject to the Mozilla Public License
7  * Version 1.1 (the "License"); you may not use this file except in
8  * compliance with the License. You may obtain a copy of the License at
9  * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is AspectJ.
17  *
18  * The Initial Developer of the Original Code is Xerox Corporation. Portions
19  * created by Xerox Corporation are Copyright (C) 1999-2002 Xerox Corporation.
20  * All Rights Reserved.
21  */
22
23 package org.aspectj.util.gui;
24
25 import java.awt.*;
26 import javax.swing.*;
27
28 /**
29  * A utility class that will center a java.awt.Window.
30  *
31  * @author Jeff Palm
32  */
33 public class CenterHelper {
34
35     /**
36      * Centers the Window w.
37      *
38      * @param w Window to center.
39      */
40     public static void center(Window w) {
41         Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
42         Dimension frameSize = w.getSize();
43         if (frameSize.height > screenSize.height) {
44             frameSize.height = screenSize.height;
45         }
46         if (frameSize.width > screenSize.width) {
47             frameSize.width = screenSize.width;
48         }
49         w.setLocation((screenSize.width - frameSize.width) / 2,
50                       (screenSize.height - frameSize.height) / 2);
51     }
52 }
53
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