Showing the changes to java/pkg/javax/swing/plaf/basic/CenterLayout.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved. | |
| 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 | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 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 | + * | |
| 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. | |
| 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 | + */ | |
| 37 | +class CenterLayout implements LayoutManager, Serializable { | |
| 38 | + public void addLayoutComponent(String name, Component comp) { } | |
| 39 | + public void removeLayoutComponent(Component comp) { } | |
| 40 | + | |
| 41 | + public Dimension preferredLayoutSize( Container container ) { | |
| 42 | + Component c = container.getComponent( 0 ); | |
| 43 | + if ( c != null ) { | |
| 44 | + Dimension size = c.getPreferredSize(); | |
| 45 | + Insets insets = container.getInsets(); | |
| 46 | + | |
| 47 | + return new Dimension(size.width + insets.left + insets.right, | |
| 48 | + size.height + insets.top + insets.bottom); | |
| 49 | + } | |
| 50 | + else { | |
| 51 | + return new Dimension( 0, 0 ); | |
| 52 | + } | |
| 53 | + } | |
| 54 | + | |
| 55 | + public Dimension minimumLayoutSize(Container cont) { | |
| 56 | + return preferredLayoutSize(cont); | |
| 57 | + } | |
| 58 | + | |
| 59 | + public void layoutContainer(Container container) { | |
| 60 | + if (container.getComponentCount() > 0) { | |
| 61 | + Component c = container.getComponent(0); | |
| 62 | + Dimension pref = c.getPreferredSize(); | |
| 63 | + int containerWidth = container.getWidth(); | |
| 64 | + int containerHeight = container.getHeight(); | |
| 65 | + Insets containerInsets = container.getInsets(); | |
| 66 | + | |
| 67 | + containerWidth -= containerInsets.left + | |
| 68 | + containerInsets.right; | |
| 69 | + containerHeight -= containerInsets.top + | |
| 70 | + containerInsets.bottom; | |
| 71 | + | |
| 72 | + int left = (containerWidth - pref.width) / 2 + | |
| 73 | + containerInsets.left; | |
| 74 | + int right = (containerHeight - pref.height) / 2 + | |
| 75 | + containerInsets.top; | |
| 76 | + | |
| 77 | + c.setBounds(left, right, pref.width, pref.height); | |
| 78 | + } | |
| 79 | + } | |
| 80 | +} | |