001/* ========================================================================
002 * JCommon : a free general purpose class library for the Java(tm) platform
003 * ========================================================================
004 *
005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
006 * 
007 * Project Info:  http://www.jfree.org/jcommon/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it 
010 * under the terms of the GNU Lesser General Public License as published by 
011 * the Free Software Foundation; either version 2.1 of the License, or 
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but 
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022 * USA.  
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025 * in the United States and other countries.]
026 * 
027 * -----------------
028 * TextMeasurer.java
029 * -----------------
030 * (C) Copyright 2004, 2005, by Object Refinery Limited and Contributors.
031 *
032 * Original Author:  David Gilbert (for Object Refinery Limited);
033 * Contributor(s):   -;
034 *
035 * $Id: TextMeasurer.java,v 1.4 2005/10/18 13:17:16 mungady Exp $
036 *
037 * Changes
038 * -------
039 * 07-Jan-2004 : Version 1 (DG);
040 *
041 */
042
043package org.jfree.text;
044
045/**
046 * An object that can measure text.
047 *
048 * @author David Gilbert
049 */
050public interface TextMeasurer {
051
052    /**
053     * Calculates the width of a <code>String</code> in the current 
054     * <code>Graphics</code> context.
055     *
056     * @param text  the text.
057     * @param start  the start position of the substring to be measured.
058     * @param end  the position of the last character to be measured.
059     *
060     * @return The width of the string in Java2D units.
061     */
062    public float getStringWidth(String text, int start, int end);
063    
064}