Java Swing UIManager getStringWidth(final String aString)

Description

Returns the string width for the default label font and string.

License

Open Source License

Parameter

Parameter	Description
aString	the string to get the width for.

Return

a string width, >= 0.

Declaration

public static int getStringWidth(final String aString) 

Method Source Code

//package com.java2s;
/*//w w w . j  a  v a  2s .com
 * OpenBench LogicSniffer / SUMP project
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 *
 * 
 * Copyright (C) 2010-2011 - J.W. Janssen, http://www.lxtreme.nl
 */

import java.awt.*;

import java.awt.image.*;

import javax.swing.*;

public class Main {
    /**
     * Returns the string width for a given {@link Font} and string.
     * 
     * @param aFont
     *          the font to create the string width;
     * @param aString
     *          the string to get the width for.
     * @return a string width, >= 0.
     */
    public static int getStringWidth(final Font aFont, final String aString) {
        final FontMetrics frc = createFontMetrics(aFont);
        return SwingUtilities.computeStringWidth(frc, aString);
    }

    /**
     * Returns the string width for the default label font and string.
     * 
     * @param aString
     *          the string to get the width for.
     * @return a string width, >= 0.
     */
    public static int getStringWidth(final String aString) {
        return getStringWidth(UIManager.getFont("Label.font"), aString);
    }

    /**
     * Creates (in a rather clumsy way) the font metrics for a given {@link Font}.
     * 
     * @param aFont
     *          the font instance to create the font metrics for, cannot be
     *          <code>null</code>.
     * @return a font metrics, never <code>null</code>.
     */
    private static FontMetrics createFontMetrics(final Font aFont) {
        BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
        Graphics canvas = img.getGraphics();

        try {
            return canvas.getFontMetrics(aFont);
        } finally {
            canvas.dispose();
            canvas = null;
            img = null;
        }
    }

    /**
     * Closes and disposes a given {@link Window}.
     * 
     * @param aWindow
     *          the window to close, if <code>null</code>, this method doesn't do
     *          anything.
     */
    public static void dispose(final Window aWindow) {
        if (aWindow == null) {
            return;
        }
        if (aWindow.isVisible()) {
            aWindow.setVisible(false);
        }
        aWindow.dispose();
    }
}

Related

1. getNestedTabbedPane(int orient, int top, int left, int bottom, int right)
2. getNimbusClassName()
3. getPropertyMaxGutterIconWidth(final String propertyPrefix)
4. getRowHeight(java.awt.Component c)
5. getSeparator()
6. getSystemDefaultModifier()
7. getTitleBarIcon()
8. getToolTipBackground()
9. getToolTipBackground()