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 | } | ||