1 |
769 |
jeremybenn |
/* OpenTypeFontFactory.java -- Creates OpenType and TrueType fonts.
|
2 |
|
|
Copyright (C) 2006 Free Software Foundation, Inc.
|
3 |
|
|
|
4 |
|
|
This file is part of GNU Classpath.
|
5 |
|
|
|
6 |
|
|
GNU Classpath is free software; you can redistribute it and/or modify
|
7 |
|
|
it under the terms of the GNU General Public License as published by
|
8 |
|
|
the Free Software Foundation; either version 2, or (at your option)
|
9 |
|
|
any later version.
|
10 |
|
|
|
11 |
|
|
GNU Classpath is distributed in the hope that it will be useful, but
|
12 |
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 |
|
|
General Public License for more details.
|
15 |
|
|
|
16 |
|
|
You should have received a copy of the GNU General Public License
|
17 |
|
|
along with GNU Classpath; see the file COPYING. If not, write to the
|
18 |
|
|
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 |
|
|
02110-1301 USA.
|
20 |
|
|
|
21 |
|
|
Linking this library statically or dynamically with other modules is
|
22 |
|
|
making a combined work based on this library. Thus, the terms and
|
23 |
|
|
conditions of the GNU General Public License cover the whole
|
24 |
|
|
combination.
|
25 |
|
|
|
26 |
|
|
As a special exception, the copyright holders of this library give you
|
27 |
|
|
permission to link this library with independent modules to produce an
|
28 |
|
|
executable, regardless of the license terms of these independent
|
29 |
|
|
modules, and to copy and distribute the resulting executable under
|
30 |
|
|
terms of your choice, provided that you also meet, for each linked
|
31 |
|
|
independent module, the terms and conditions of the license of that
|
32 |
|
|
module. An independent module is a module which is not derived from
|
33 |
|
|
or based on this library. If you modify this library, you may extend
|
34 |
|
|
this exception to your version of the library, but you are not
|
35 |
|
|
obligated to do so. If you do not wish to do so, delete this
|
36 |
|
|
exception statement from your version. */
|
37 |
|
|
|
38 |
|
|
package gnu.java.awt.font.opentype;
|
39 |
|
|
|
40 |
|
|
import gnu.java.awt.font.FontDelegate;
|
41 |
|
|
import java.awt.FontFormatException;
|
42 |
|
|
import java.awt.font.OpenType;
|
43 |
|
|
import java.nio.ByteBuffer;
|
44 |
|
|
|
45 |
|
|
|
46 |
|
|
/**
|
47 |
|
|
* A factory for creating fonts that are stored in an
|
48 |
|
|
* <i>sfnt</i>-housed format, for example OpenType or TrueType.
|
49 |
|
|
*
|
50 |
|
|
* @author Sascha Brawer (brawer@dandelis.ch)
|
51 |
|
|
*/
|
52 |
|
|
public final class OpenTypeFontFactory
|
53 |
|
|
{
|
54 |
|
|
/**
|
55 |
|
|
* The constructor is private so nobody can construct an instance
|
56 |
|
|
* of this class.
|
57 |
|
|
*/
|
58 |
|
|
private OpenTypeFontFactory()
|
59 |
|
|
{
|
60 |
|
|
}
|
61 |
|
|
|
62 |
|
|
|
63 |
|
|
/**
|
64 |
|
|
* Creates FontDelegate objects for the fonts in the specified
|
65 |
|
|
* buffer. The following font formats are currently recognized:
|
66 |
|
|
*
|
67 |
|
|
* <p><ul>
|
68 |
|
|
* <li>OpenType (*.otf);</li>
|
69 |
|
|
* <li>TrueType (*.ttf);</li>
|
70 |
|
|
* <li>TrueType Collections (*.ttc);</li>
|
71 |
|
|
* <li>Apple MacOS X data-fork font (*.dfont).</li></ul>
|
72 |
|
|
*
|
73 |
|
|
* <p>Some formats may contain more than a single font, for example
|
74 |
|
|
* *.ttc and *.dfont files. This is the reason why this function
|
75 |
|
|
* returns an array.
|
76 |
|
|
*
|
77 |
|
|
* <p>The implementation reads data from the buffer only when
|
78 |
|
|
* needed. Therefore, it greatly increases efficiency if
|
79 |
|
|
* <code>buf</code> has been obtained through mapping a file into
|
80 |
|
|
* the virtual address space.
|
81 |
|
|
*
|
82 |
|
|
* @throws FontFormatException if the font data is not in one of the
|
83 |
|
|
* known formats.
|
84 |
|
|
*/
|
85 |
|
|
public static FontDelegate[] createFonts(ByteBuffer buf)
|
86 |
|
|
throws FontFormatException
|
87 |
|
|
{
|
88 |
|
|
OpenTypeFont[] fonts;
|
89 |
|
|
int version;
|
90 |
|
|
|
91 |
|
|
version = buf.getInt(0);
|
92 |
|
|
switch (version)
|
93 |
|
|
{
|
94 |
|
|
case 0x00010000: // Microsoft Windows TrueType
|
95 |
|
|
case OpenType.TAG_TYP1: // Apple MacOS PostScript ('typ1')
|
96 |
|
|
case OpenTypeFont.TAG_SFNT: // Apple MacOS TrueType ('sfnt')
|
97 |
|
|
case OpenTypeFont.TAG_TRUE: // Apple MacOS TrueType ('true')
|
98 |
|
|
case OpenTypeFont.TAG_OTTO: // OpenType
|
99 |
|
|
return new OpenTypeFont[] { new OpenTypeFont(buf, 0) };
|
100 |
|
|
}
|
101 |
|
|
|
102 |
|
|
|
103 |
|
|
/* TrueType Collection, see "TrueType Collections" in
|
104 |
|
|
* http://partners.adobe.com/asn/tech/type/opentype/otff.html
|
105 |
|
|
*/
|
106 |
|
|
if (version == OpenTypeFont.TAG_TTCF)
|
107 |
|
|
{
|
108 |
|
|
// This code has never been tested.
|
109 |
|
|
fonts = new OpenTypeFont[buf.getInt(8)];
|
110 |
|
|
for (int i = 0; i < fonts.length; i++)
|
111 |
|
|
fonts[i] = new OpenTypeFont(buf, buf.getInt(16 + 4 * i));
|
112 |
|
|
return fonts;
|
113 |
|
|
}
|
114 |
|
|
|
115 |
|
|
|
116 |
|
|
/* The MacOS X .dfont format is a Macintosh resource fork in
|
117 |
|
|
* a normal file, contaning one or several 'sfnt' resources.
|
118 |
|
|
* Unfortunately, MacOS resource forks have no magic code
|
119 |
|
|
* that could be used for identification. Instead, we just try
|
120 |
|
|
* to extract at least one 'sfnt'.
|
121 |
|
|
*/
|
122 |
|
|
try
|
123 |
|
|
{
|
124 |
|
|
MacResourceFork fork = new MacResourceFork(buf);
|
125 |
|
|
MacResourceFork.Resource[] rsrc;
|
126 |
|
|
|
127 |
|
|
rsrc = fork.getResources(OpenTypeFont.TAG_SFNT);
|
128 |
|
|
fonts = new OpenTypeFont[rsrc.length];
|
129 |
|
|
for (int i = 0; i < fonts.length; i++)
|
130 |
|
|
fonts[i] = new OpenTypeFont(rsrc[i].getContent(), 0);
|
131 |
|
|
|
132 |
|
|
return fonts;
|
133 |
|
|
}
|
134 |
|
|
catch (Exception ex)
|
135 |
|
|
{
|
136 |
|
|
}
|
137 |
|
|
|
138 |
|
|
throw new FontFormatException("not in OpenType or TrueType format");
|
139 |
|
|
}
|
140 |
|
|
}
|