2
|
1 |
/*
|
23697
|
2 |
* Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
|
2
|
3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
4 |
*
|
|
5 |
* This code is free software; you can redistribute it and/or modify it
|
|
6 |
* under the terms of the GNU General Public License version 2 only, as
|
5506
|
7 |
* published by the Free Software Foundation. Oracle designates this
|
2
|
8 |
* particular file as subject to the "Classpath" exception as provided
|
5506
|
9 |
* by Oracle in the LICENSE file that accompanied this code.
|
2
|
10 |
*
|
|
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that
|
|
15 |
* accompanied this code).
|
|
16 |
*
|
|
17 |
* You should have received a copy of the GNU General Public License version
|
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
20 |
*
|
5506
|
21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
22 |
* or visit www.oracle.com if you need additional information or have any
|
|
23 |
* questions.
|
2
|
24 |
*/
|
|
25 |
|
|
26 |
package javax.swing.plaf.basic;
|
|
27 |
|
|
28 |
|
|
29 |
import java.awt.*;
|
|
30 |
import java.io.*;
|
|
31 |
|
|
32 |
/**
|
|
33 |
* Center-positioning layout manager.
|
|
34 |
* @author Tom Santos
|
|
35 |
* @author Steve Wilson
|
|
36 |
*/
|
23697
|
37 |
@SuppressWarnings("serial") // Same-version serialization only
|
2
|
38 |
class CenterLayout implements LayoutManager, Serializable {
|
|
39 |
public void addLayoutComponent(String name, Component comp) { }
|
|
40 |
public void removeLayoutComponent(Component comp) { }
|
|
41 |
|
|
42 |
public Dimension preferredLayoutSize( Container container ) {
|
|
43 |
Component c = container.getComponent( 0 );
|
|
44 |
if ( c != null ) {
|
|
45 |
Dimension size = c.getPreferredSize();
|
|
46 |
Insets insets = container.getInsets();
|
|
47 |
|
|
48 |
return new Dimension(size.width + insets.left + insets.right,
|
|
49 |
size.height + insets.top + insets.bottom);
|
|
50 |
}
|
|
51 |
else {
|
|
52 |
return new Dimension( 0, 0 );
|
|
53 |
}
|
|
54 |
}
|
|
55 |
|
|
56 |
public Dimension minimumLayoutSize(Container cont) {
|
|
57 |
return preferredLayoutSize(cont);
|
|
58 |
}
|
|
59 |
|
|
60 |
public void layoutContainer(Container container) {
|
|
61 |
if (container.getComponentCount() > 0) {
|
|
62 |
Component c = container.getComponent(0);
|
|
63 |
Dimension pref = c.getPreferredSize();
|
|
64 |
int containerWidth = container.getWidth();
|
|
65 |
int containerHeight = container.getHeight();
|
|
66 |
Insets containerInsets = container.getInsets();
|
|
67 |
|
|
68 |
containerWidth -= containerInsets.left +
|
|
69 |
containerInsets.right;
|
|
70 |
containerHeight -= containerInsets.top +
|
|
71 |
containerInsets.bottom;
|
|
72 |
|
|
73 |
int left = (containerWidth - pref.width) / 2 +
|
|
74 |
containerInsets.left;
|
|
75 |
int right = (containerHeight - pref.height) / 2 +
|
|
76 |
containerInsets.top;
|
|
77 |
|
|
78 |
c.setBounds(left, right, pref.width, pref.height);
|
|
79 |
}
|
|
80 |
}
|
|
81 |
}
|