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81 lines
2.0 KiB
81 lines
2.0 KiB
/*
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* Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*/
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package javax.swing.plaf.basic;
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import java.awt.*;
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import java.io.*;
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/**
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* Center-positioning layout manager.
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* @author Tom Santos
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* @author Steve Wilson
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*/
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class CenterLayout implements LayoutManager, Serializable {
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public void addLayoutComponent(String name, Component comp) { }
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public void removeLayoutComponent(Component comp) { }
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public Dimension preferredLayoutSize( Container container ) {
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Component c = container.getComponent( 0 );
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if ( c != null ) {
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Dimension size = c.getPreferredSize();
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Insets insets = container.getInsets();
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return new Dimension(size.width + insets.left + insets.right,
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size.height + insets.top + insets.bottom);
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}
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else {
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return new Dimension( 0, 0 );
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}
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}
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public Dimension minimumLayoutSize(Container cont) {
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return preferredLayoutSize(cont);
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}
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public void layoutContainer(Container container) {
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if (container.getComponentCount() > 0) {
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Component c = container.getComponent(0);
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Dimension pref = c.getPreferredSize();
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int containerWidth = container.getWidth();
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int containerHeight = container.getHeight();
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Insets containerInsets = container.getInsets();
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containerWidth -= containerInsets.left +
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containerInsets.right;
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containerHeight -= containerInsets.top +
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containerInsets.bottom;
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int left = (containerWidth - pref.width) / 2 +
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containerInsets.left;
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int right = (containerHeight - pref.height) / 2 +
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containerInsets.top;
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c.setBounds(left, right, pref.width, pref.height);
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}
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}
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}
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