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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFontFactory.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFontFactory.java')
-rw-r--r-- | libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFontFactory.java | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFontFactory.java b/libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFontFactory.java new file mode 100644 index 000000000..32c4828c9 --- /dev/null +++ b/libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFontFactory.java @@ -0,0 +1,140 @@ +/* OpenTypeFontFactory.java -- Creates OpenType and TrueType fonts. + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.java.awt.font.opentype; + +import gnu.java.awt.font.FontDelegate; +import java.awt.FontFormatException; +import java.awt.font.OpenType; +import java.nio.ByteBuffer; + + +/** + * A factory for creating fonts that are stored in an + * <i>sfnt</i>-housed format, for example OpenType or TrueType. + * + * @author Sascha Brawer (brawer@dandelis.ch) + */ +public final class OpenTypeFontFactory +{ + /** + * The constructor is private so nobody can construct an instance + * of this class. + */ + private OpenTypeFontFactory() + { + } + + + /** + * Creates FontDelegate objects for the fonts in the specified + * buffer. The following font formats are currently recognized: + * + * <p><ul> + * <li>OpenType (*.otf);</li> + * <li>TrueType (*.ttf);</li> + * <li>TrueType Collections (*.ttc);</li> + * <li>Apple MacOS X data-fork font (*.dfont).</li></ul> + * + * <p>Some formats may contain more than a single font, for example + * *.ttc and *.dfont files. This is the reason why this function + * returns an array. + * + * <p>The implementation reads data from the buffer only when + * needed. Therefore, it greatly increases efficiency if + * <code>buf</code> has been obtained through mapping a file into + * the virtual address space. + * + * @throws FontFormatException if the font data is not in one of the + * known formats. + */ + public static FontDelegate[] createFonts(ByteBuffer buf) + throws FontFormatException + { + OpenTypeFont[] fonts; + int version; + + version = buf.getInt(0); + switch (version) + { + case 0x00010000: // Microsoft Windows TrueType + case OpenType.TAG_TYP1: // Apple MacOS PostScript ('typ1') + case OpenTypeFont.TAG_SFNT: // Apple MacOS TrueType ('sfnt') + case OpenTypeFont.TAG_TRUE: // Apple MacOS TrueType ('true') + case OpenTypeFont.TAG_OTTO: // OpenType + return new OpenTypeFont[] { new OpenTypeFont(buf, 0) }; + } + + + /* TrueType Collection, see "TrueType Collections" in + * http://partners.adobe.com/asn/tech/type/opentype/otff.html + */ + if (version == OpenTypeFont.TAG_TTCF) + { + // This code has never been tested. + fonts = new OpenTypeFont[buf.getInt(8)]; + for (int i = 0; i < fonts.length; i++) + fonts[i] = new OpenTypeFont(buf, buf.getInt(16 + 4 * i)); + return fonts; + } + + + /* The MacOS X .dfont format is a Macintosh resource fork in + * a normal file, contaning one or several 'sfnt' resources. + * Unfortunately, MacOS resource forks have no magic code + * that could be used for identification. Instead, we just try + * to extract at least one 'sfnt'. + */ + try + { + MacResourceFork fork = new MacResourceFork(buf); + MacResourceFork.Resource[] rsrc; + + rsrc = fork.getResources(OpenTypeFont.TAG_SFNT); + fonts = new OpenTypeFont[rsrc.length]; + for (int i = 0; i < fonts.length; i++) + fonts[i] = new OpenTypeFont(rsrc[i].getContent(), 0); + + return fonts; + } + catch (Exception ex) + { + } + + throw new FontFormatException("not in OpenType or TrueType format"); + } +} |