| 1 | /* FontMetrics.java -- Information about about a fonts display characteristics
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| 2 | Copyright (C) 1999, 2002 Free Software Foundation, Inc.
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| 3 |
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| 4 | This file is part of GNU Classpath.
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| 5 |
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| 6 | GNU Classpath is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | GNU Classpath is distributed in the hope that it will be useful, but
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| 12 | WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 14 | General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with GNU Classpath; see the file COPYING. If not, write to the
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| 18 | Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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| 19 | 02111-1307 USA.
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| 20 |
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| 21 | Linking this library statically or dynamically with other modules is
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| 22 | making a combined work based on this library. Thus, the terms and
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| 23 | conditions of the GNU General Public License cover the whole
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| 24 | combination.
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| 25 |
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| 26 | As a special exception, the copyright holders of this library give you
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| 27 | permission to link this library with independent modules to produce an
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| 28 | executable, regardless of the license terms of these independent
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| 29 | modules, and to copy and distribute the resulting executable under
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| 30 | terms of your choice, provided that you also meet, for each linked
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| 31 | independent module, the terms and conditions of the license of that
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| 32 | module. An independent module is a module which is not derived from
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| 33 | or based on this library. If you modify this library, you may extend
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| 34 | this exception to your version of the library, but you are not
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| 35 | obligated to do so. If you do not wish to do so, delete this
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| 36 | exception statement from your version. */
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| 37 |
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| 38 |
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| 39 | package java.awt;
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| 40 |
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| 41 | // FIXME: I leave many methods basically unimplemented. This
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| 42 | // should be reviewed.
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| 43 |
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| 44 | /**
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| 45 | * This class returns information about the display characteristics of
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| 46 | * a font. It is abstract, and concrete subclasses should implement at
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| 47 | * least the following methods:
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| 48 | * <p>
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| 49 | * <ul>
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| 50 | * <li>getAscent
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| 51 | * <li>getDescent
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| 52 | * <li>getLeading()
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| 53 | * <li>getMaxAdvance()
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| 54 | * <li>charWidth(char)
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| 55 | * <li>charsWidth(char[], int, int)
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| 56 | * </ul>
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| 57 | *
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| 58 | * @author Aaron M. Renn ([email protected])
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| 59 | */
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| 60 | public abstract class FontMetrics implements java.io.Serializable
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| 61 | {
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| 62 |
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| 63 | /*
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| 64 | * Static Variables
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| 65 | */
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| 66 |
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| 67 | // Serialization constant
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| 68 | private static final long serialVersionUID = 1681126225205050147L;
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| 69 |
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| 70 | /*************************************************************************/
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| 71 |
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| 72 | /*
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| 73 | * Instance Variables
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| 74 | */
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| 75 |
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| 76 | /**
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| 77 | * This is the font for which metrics will be returned.
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| 78 | */
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| 79 | protected Font font;
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| 80 |
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| 81 | /*************************************************************************/
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| 82 |
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| 83 | /*
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| 84 | * Constructors
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| 85 | */
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| 86 |
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| 87 | /**
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| 88 | * Initializes a new instance of <code>FontMetrics</code> for the
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| 89 | * specified font.
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| 90 | *
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| 91 | * @param font The font to return metric information for.
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| 92 | */
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| 93 | protected
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| 94 | FontMetrics(Font font)
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