Installing and Configuring Fonts for the Graphical User Interface

Contents

12.1. X11 Core Fonts
12.2. Xft

The installation of additional fonts in openSUSE is very easy. Simply copy the fonts to any directory located in the X11 font path (see Section 12.1, “X11 Core Fonts”). To the enable use of the fonts, the installation directory should be a subdirectory of the directories configured in /etc/fonts/fonts.conf (see Section 12.2, “Xft”) or included into this file with /etc/fonts/suse-font-dirs.conf.

The following is an excerpt from /etc/fonts/fonts.conf. This file is the standard configuration file that should be appropriate for most configurations. It also defines the included directory /etc/fonts/conf.d. In this directory, all files or symbolic links starting with a two digit number are loaded by fontconfig. For a more detailed explanation of this functionality, have a look at /etc/fonts/conf.d/README.

<!-- Font directory list -->
<dir>/usr/share/fonts</dir>
<dir>/usr/X11R6/lib/X11/fonts</dir> 
<dir>/opt/kde3/share/fonts</dir>
<dir>/usr/local/share/fonts</dir>
<dir>~/.fonts</dir>

/etc/fonts/suse-font-dirs.conf is automatically generated to pull in fonts that ship with (mostly third party) applications like OpenOffice.org, Java or Adobe Acrobat Reader. Some typical entries of /etc/fonts/suse-font-dirs.conf would look like the following:

<dir>/usr/lib64/ooo-2.0/share/fonts</dir>
<dir>/usr/lib/jvm/java-1_4_2-sun-1.4.2.11/jre/lib/fonts</dir>
<dir>/usr/lib64/jvm/java-1.5.0-sun-1.5.0_07/jre/lib/fonts</dir>
<dir>/usr/X11R6/lib/Acrobat7/Resource/Font</dir>
<dir>/usr/X11R6/lib/Acrobat7/Resource/Font/PFM</dir>

To install additional fonts systemwide, manually copy the font files to a suitable directory (as root), such as /usr/share/fonts/truetype. Alternatively, the task can be performed with the KDE font installer in the KDE Control Center. The result is the same.

Instead of copying the actual fonts, you can also create symbolic links. For example, you may want to do this if you have licensed fonts on a mounted Windows partition and want to use them. Subsequently, run SuSEconfig --module fonts .

SuSEconfig --module fonts executes the script /usr/sbin/fonts-config, which handles the font configuration. For more information on this script, refer to its manual page (man fonts-config ).

The procedure is the same for bitmap fonts, TrueType and OpenType fonts, and Type1 (PostScript) fonts. All these font types can be installed into any directory known to fonts-config.

X.Org contains two completely different font systems: the old X11 core font system and the newly designed Xft and fontconfig system. The following sections briefly describe these two systems.

X11 Core Fonts

Today, the X11 core font system supports not only bitmap fonts but also scalable fonts, like Type1 fonts, TrueType, and OpenType fonts. Scalable fonts are only supported without antialiasing and subpixel rendering and the loading of large scalable fonts with glyphs for many languages may take a long time. Unicode fonts are also supported, but their use may be slow and require more memory.

The X11 core font system has a few inherent weaknesses. It is outdated and can no longer be extended in any meaningful way. Although it must be retained for reasons of backward compatibility, the more modern Xft and fontconfig system should be used if at all possible.

For its operation, the X server needs to know which fonts are available and where in the system it can find them. This is handled by a FontPath variable, which contains the path to all valid system font directories. In each of these directories, a file named fonts.dir lists the available fonts in this directory. The FontPath is generated by the X server at start-up. It searches for a valid fonts.dir file in each of the FontPath entries in the configuration file /etc/X11/xorg.conf. These entries are found in the Files section. Display the actual FontPath with xset q. This path may also be changed at runtime with xset. To add an additional path, use xset +fp <path>. To remove an unwanted path, use xset -fp <path>.

If the X server is already active, newly installed fonts in mounted directories can be made available with the command xset fp rehash. This command is executed by SuSEconfig --module fonts. Because the command xset needs access to the running X server, this only works if SuSEconfig --module fonts is started from a shell that has access to the running X server. The easiest way to achieve this is to aquire root permissions by entering su and the root password. su transfers the access permissions of the user who started the X server to the root shell. To check if the fonts were installed correctly and are available by way of the X11 core font system, use the command xlsfonts to list all available fonts.

By default, openSUSE uses UTF-8 locales. Therefore, Unicode fonts should be preferred (font names ending with iso10646-1 in xlsfonts output). All available Unicode fonts can be listed with xlsfonts | grep iso10646-1. Nearly all Unicode fonts available in openSUSE contain at least the glyphs needed for European languages (formerly encoded as iso-8859-*).