    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}