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The JGoodies Looks make your Swing applications and applets look better. They have been optimized for readability, precise micro-design and usability. And they simplify the multi-platform support by using similar widget dimensions. In addition, many people have reviewed them as elegant.

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/*
 * Copyright (c) 2001-2012 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  o Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 *  o Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.jgoodies.looks.windows;

import java.awt.Dimension;

import javax.swing.AbstractButton;
import javax.swing.JComponent;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicGraphicsUtils;

/**
 * The JGoodies Windows look&feel implementation of {@code ButtonUI}.
 *
 * Unlike its superclass it returns even and odd preferred heights.
 *
 * @author  Karsten Lentzsch
 * @version $Revision: 1.9 $
 */
public final class WindowsButtonUI extends com.sun.java.swing.plaf.windows.WindowsButtonUI {

    public static ComponentUI createUI(JComponent b) {
        return new WindowsButtonUI();
    }

    @Override
    public Dimension getPreferredSize(JComponent c) {
        AbstractButton b = (AbstractButton) c;
        Dimension d = BasicGraphicsUtils.getPreferredButtonSize(b, b
                .getIconTextGap());

        /* Ensure that the width of the button is odd,
         * to improve the painting of the dashed focus line
         */
        if (d != null && b.isFocusPainted()) {
            if (d.width % 2 == 0) {
                d.width += 1;
            }
        }
        return d;
    }


}