1 /*
2 * Copyright 1997-1998 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25 package java.awt.font;
26
27 import java.awt.Font;
28
29 /**
30 * The <code>MultipleMaster</code> interface represents Type 1
31 * Multiple Master fonts.
32 * A particular {@link Font} object can implement this interface.
33 */
34 public interface MultipleMaster {
35
36 /**
37 * Returns the number of multiple master design controls.
38 * Design axes include things like width, weight and optical scaling.
39 * @return the number of multiple master design controls
40 */
41 public int getNumDesignAxes();
42
43 /**
44 * Returns an array of design limits interleaved in the form [from->to]
45 * for each axis. For example,
46 * design limits for weight could be from 0.1 to 1.0. The values are
47 * returned in the same order returned by
48 * <code>getDesignAxisNames</code>.
49 * @return an array of design limits for each axis.
50 */
51 public float[] getDesignAxisRanges();
52
53 /**
54 * Returns an array of default design values for each axis. For example,
55 * the default value for weight could be 1.6. The values are returned
56 * in the same order returned by <code>getDesignAxisNames</code>.
57 * @return an array of default design values for each axis.
58 */
59 public float[] getDesignAxisDefaults();
60
61 /**
62 * Returns the name for each design axis. This also determines the order in
63 * which the values for each axis are returned.
64 * @return an array containing the names of each design axis.
65 */
66 public String[] getDesignAxisNames();
67
68 /**
69 * Creates a new instance of a multiple master font based on the design
70 * axis values contained in the specified array. The size of the array
71 * must correspond to the value returned from
72 * <code>getNumDesignAxes</code> and the values of the array elements
73 * must fall within limits specified by
74 * <code>getDesignAxesLimits</code>. In case of an error,
75 * <code>null</code> is returned.
76 * @param axes an array containing axis values
77 * @return a {@link Font} object that is an instance of
78 * <code>MultipleMaster</code> and is based on the design axis values
79 * provided by <code>axes</code>.
80 */
81 public Font deriveMMFont(float[] axes);
82
83 /**
84 * Creates a new instance of a multiple master font based on detailed metric
85 * information. In case of an error, <code>null</code> is returned.
86 * @param glyphWidths an array of floats representing the desired width
87 * of each glyph in font space
88 * @param avgStemWidth the average stem width for the overall font in
89 * font space
90 * @param typicalCapHeight the height of a typical upper case char
91 * @param typicalXHeight the height of a typical lower case char
92 * @param italicAngle the angle at which the italics lean, in degrees
93 * counterclockwise from vertical
94 * @return a <code>Font</code> object that is an instance of
95 * <code>MultipleMaster</code> and is based on the specified metric
96 * information.
97 */
98 public Font deriveMMFont(
99 float[] glyphWidths,
100 float avgStemWidth,
101 float typicalCapHeight,
102 float typicalXHeight,
103 float italicAngle);
104
105
106 }
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