Source for org.jfree.text.TextMeasurer

   1: /* ========================================================================
   2:  * JCommon : a free general purpose class library for the Java(tm) platform
   3:  * ========================================================================
   4:  *
   5:  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
   6:  * 
   7:  * Project Info:  http://www.jfree.org/jcommon/index.html
   8:  *
   9:  * This library is free software; you can redistribute it and/or modify it 
  10:  * under the terms of the GNU Lesser General Public License as published by 
  11:  * the Free Software Foundation; either version 2.1 of the License, or 
  12:  * (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but 
  15:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
  16:  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
  17:  * License for more details.
  18:  *
  19:  * You should have received a copy of the GNU Lesser General Public
  20:  * License along with this library; if not, write to the Free Software
  21:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
  22:  * USA.  
  23:  *
  24:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
  25:  * in the United States and other countries.]
  26:  * 
  27:  * -----------------
  28:  * TextMeasurer.java
  29:  * -----------------
  30:  * (C) Copyright 2004, 2005, by Object Refinery Limited and Contributors.
  31:  *
  32:  * Original Author:  David Gilbert (for Object Refinery Limited);
  33:  * Contributor(s):   -;
  34:  *
  35:  * $Id: TextMeasurer.java,v 1.4 2005/10/18 13:17:16 mungady Exp $
  36:  *
  37:  * Changes
  38:  * -------
  39:  * 07-Jan-2004 : Version 1 (DG);
  40:  *
  41:  */
  42: 
  43: package org.jfree.text;
  44: 
  45: /**
  46:  * An object that can measure text.
  47:  *
  48:  * @author David Gilbert
  49:  */
  50: public interface TextMeasurer {
  51: 
  52:     /**
  53:      * Calculates the width of a <code>String</code> in the current 
  54:      * <code>Graphics</code> context.
  55:      *
  56:      * @param text  the text.
  57:      * @param start  the start position of the substring to be measured.
  58:      * @param end  the position of the last character to be measured.
  59:      *
  60:      * @return The width of the string in Java2D units.
  61:      */
  62:     public float getStringWidth(String text, int start, int end);
  63:     
  64: }