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Java > Open Source Codes > 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 JavaDoc text, int start, int end);
63     
64 }
65
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