Source Code : Center Layout

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Center Layout

    
/*
    GNU LESSER GENERAL PUBLIC LICENSE
    Copyright (C) 2006 The Lobo Project

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Contact info: lobochief@users.sourceforge.net
*/
/*
 * Created on Mar 19, 2005
 */

import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.LayoutManager;

/**
 * @author J. H. S.
 */
public class CenterLayout implements LayoutManager {
    public void addLayoutComponent(String arg0, Component arg1) {
    }

    public void removeLayoutComponent(Component arg0) {
    }

    public Dimension preferredLayoutSize(Container arg0) {
      java.awt.Insets insets = arg0.getInsets();
        int count = arg0.getComponentCount();
        if(count > 0) {
            Dimension d = arg0.getComponent(0).getPreferredSize();
            return new Dimension(d.width + insets.left + insets.right,
                           d.height + insets.top + insets.bottom);
        }
        else {
            return new Dimension(insets.left + insets.right, insets.top + insets.bottom);
        }
    }

    /* (non-Javadoc)
     * @see java.awt.LayoutManager#minimumLayoutSize(java.awt.Container)
     */
    public Dimension minimumLayoutSize(Container arg0) {
      java.awt.Insets insets = arg0.getInsets();
        int count = arg0.getComponentCount();
        if(count > 0) {
            Dimension d = arg0.getComponent(0).getMinimumSize();
            return new Dimension(d.width + insets.left + insets.right,
               d.height + insets.top + insets.bottom);
        }
        else {
            return new Dimension(insets.left + insets.right, insets.top + insets.bottom);
        }
    }

    /* (non-Javadoc)
     * @see java.awt.LayoutManager#layoutContainer(java.awt.Container)
     */
    public void layoutContainer(Container container) {
        int count = container.getComponentCount();
        if(count > 0) {
            Component child = container.getComponent(0); 
            java.awt.Insets insets = container.getInsets();
            int availWidth = container.getWidth() - insets.left - insets.right;
            int availHeight = container.getHeight() - insets.top - insets.bottom;
            Dimension preferredSize = child.getPreferredSize();
            double preferredWidth = preferredSize.getWidth();
            double preferredHeight = preferredSize.getHeight();
            int width;
            int height;
            int x;
            int y;
            if(preferredWidth < availWidth) {
              x = (int) Math.round(insets.left + (availWidth - preferredWidth) / 2);
              width = (int) Math.round(preferredWidth);
            }
            else {
              x = insets.left;
              width = availWidth;
            }
            if(preferredHeight < availHeight) {
              y = (int) Math.round(insets.top + (availHeight - preferredHeight) / 2);
              height = (int) Math.round(preferredHeight);
            }
            else {
              y = insets.top;
              height = availHeight;
            }
            child.setBounds(x, y, width, height);
        }
    }
    
    private static CenterLayout instance = new CenterLayout();
    
    public static CenterLayout getInstance() {
      return instance;
    }
}

   
    
    
    
  

Thank with us