defoma - Debian Font Manager, provides automatic font configuration
framework.
defoma-font [options] command args..
defoma-app [options] command args..
defoma-subst [options] command args..
Defoma stands for Debian Font Manager. It provides automatic font configuration
framework. Please refer the manpage of defoma-font, defomaapp,
or defoma-subst for the detailed information of each command. This
page describes the introduction of Defoma.
Generally fonts are used by various applications, but there's no way to
configure them properly for each application, especially for higher
level ones like word processor and illustrator. Defoma is a solution to
this problem. It calls configuration scripts installed by applications
whenever a font is installed/removed to update the font configuration
of applications.
Defoma-configuration script is a perl library that each application
should install as application-name.defoma under
/usr/share/defoma/scripts and which configures about a font for the application.
Following is the example of the script named foo.defoma.
@ACCEPT_CATEGORIES = qw(type1 truetype);
package foo;
sub type1 {
my $com = shift;
...
}
sub truetype {
my $com = shift;
...
}
1;
This example represents an application foo wants to configure truetype
and type1 category fonts. Each function whose name is the same as a
category is called with command and additional arguments from Defoma.
Following is a list of commands.
* register
* unregister
* do-install-real do-install-alias do-install-subst
* do-remove-real do-remove-alias do-remove-subst
* init
* term
* purge
do-install-* and do-remove-* commands are called from Id cache so they
are never passed unless the script makes use of it. init and term are
called before/after the registration and unregistration starts/finishes,
respectively.
Id cache is another feature of Defoma. The possible problem of automatic
configuration is name space confliction. Usually applications access
fonts through their logical font names (like XLFDs and PostScript font
names) rather than the fonts themselves (like font files). Logical font
names, called identifier in Defoma, can easily confclict especially if
aliases are permitted. Through Id cache mechanism, only one font is
actually installed for each identifier even if several fonts provide
the same identifier.
Id Substitution is additional feature to Id cache. It makes a certain
font provide a certain id specified in a rulefile. Rulefile describes
need-to-be-substituted (in other words, required) ids and their hints,
called rule. The rule is used to have more similar-looking fonts with
the same characters substitute for a required id. This feature can also
be used for the purpose to make correspondence of fonts in different
categories.
Category represents a type of fonts. Generally configuration for fonts
that belong to the same category goes the same way, so it benefits the
application's configuration script.
Hints represent essential font information and typeface information of
the font. They consist of some HintTypes and their values. They can be
specified from command line options of defoma-font, or through a hint-
file.
Hintfile describes one or more fonts and their hints in a single file.
It is supposed to be put under /etc/defoma/hints as a conffile, so that
users can modify the hints.
Following is the example of hintfile. defoma-hints is a tool to help
generating hints as well as hintfile, so you do not have to create one
from scratch.
category type1
begin /usr/share/fonts/type1/foo.pfa
FontName = Helvetica
Charset = ISO8859-1
Family = Helvetica
Weight = Medium
Shape = Upright NoSerif
GeneralFamily = SansSerif
X-FontName = -urw-helvetica-medium-r-noraml--0-0-0-0-p-iso8859-1
end
begin /usr/share/fonts/type1/foob.pfa
FontName = Helvetica-Bold
Charset = ISO8859-1
Family = Helvetica
Weight = Bold
Shape = Upright NoSerif
GeneralFamily = SansSerif
X-FontName = -urw-helvetica-bold-r-noraml--0-0-0-0-p-iso8859-1
end
defoma-font(1). defoma-app(1). defoma-subst(1). defoma-hints(1).
defoma-psfont-installer(1). defoma-reconfigure(1). Defoma::Font(3pm).
Defoma::Id(3pm). Defoma::Subst(3pm). Defoma::Common(3pm).
/usr/share/doc/defoma-doc/developers.html/index.html
/usr/share/doc/defoma-doc/defoma-script.html/index.html
March 4, 2001 defoma(1)
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