| /* 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"); |
| } |
| } |