afmtodit - create font files for use with groff -Tps
afmtodit [ -mnsv ] [ -a n ] [ -d desc_file ] [ -e enc_file ] [ -i n ]
afm_file map_file font
The whitespace between an command line option and its argument is
afmtodit creates a font file for use with groff and grops. afmtodit is
written in perl; you must have perl version 3 or newer installed in
order to run afmtodit.
afm_file is the AFM (Adobe Font Metric) file for the font.
map_file is a file that says which groff character names map onto each
PostScript character name; this file should contain a sequence of lines
of the form
where ps_char is the PostScript name of the character and groff_char is
the groff name of the character (as used in the groff font file). The
same ps_char can occur multiple times in the file; each groff_char must
occur at most once. Lines starting with # and blank lines are ignored.
If the file isn't found in the current directory, it is searched in the
`devps/generate' subdirectory of the default font directory.
If a PostScript character is in the encoding to be used for the font
but is not mentioned in map_file, or if a generic groff glyph name
can't be deduced using the Adobe Glyph List (built into afmtodit) then
afmtodit will put it in the groff font file as an unnamed character,
which can be accessed by the \N escape sequence in troff. If option -e
is not specified, the encoding defined in the AFM file (i.e., entries
with non-negative character codes) is used. Please refer to section
`Using Symbols' in the groff info file which describes how groff glyph
names are constructed.
Characters not encoded in the AFM file (i.e., entries which have -1 as
the character code) are still available in groff; they get glyph index
values greater than 255 (or greater than the biggest character code
used in the AFM file in the unlikely case that it is greater than 255)
in the groff font file. Glyph indices of unencoded characters don't
have a specific order; it is best to access them with glyph names only.
The groff font file will be output to a file called font.
If there is a downloadable font file for the font, it may be listed in
the file /usr/share/groff_font/devps/download; see grops(1).
If the -i option is used, afmtodit will automatically generate an
italic correction, a left italic correction and a subscript correction
for each character (the significance of these parameters is explained
in groff_font(5)); these parameters may be specified for individual
characters by adding to the afm_file lines of the form:
italicCorrection ps_char n
leftItalicCorrection ps_char n
subscriptCorrection ps_char n
where ps_char is the PostScript name of the character, and n is the
desired value of the corresponding parameter in thousandths of an em.
These parameters are normally needed only for italic (or oblique)
-an Use n as the slant parameter in the font file; this is used by
groff in the positioning of accents. By default afmtodit uses
the negative of the ItalicAngle specified in the afm file; with
true italic fonts it is sometimes desirable to use a slant that
is less than this. If you find that characters from an italic
font have accents placed too far to the right over them, then
use the -a option to give the font a smaller slant.
The device description file is desc_file rather than the default
DESC. If not found in the current directory, the `devps' subdirectory
of the default font directory is searched (this is true
for both the default device description file and a file given
with option -d).
The PostScript font should be reencoded to use the encoding
described in enc_file. The format of enc_file is described in
grops(1). If not found in the current directory, the `devps'
subdirectory of the default font directory is searched.
-in Generate an italic correction for each character so that the
character's width plus the character's italic correction is
equal to n thousandths of an em plus the amount by which the
right edge of the character's bounding box is to the right of
the character's origin. If this would result in a negative
italic correction, use a zero italic correction instead.
Also generate a subscript correction equal to the product of the
tangent of the slant of the font and four fifths of the x-height
of the font. If this would result in a subscript correction
greater than the italic correction, use a subscript correction
equal to the italic correction instead.
Also generate a left italic correction for each character equal
to n thousandths of an em plus the amount by which the left edge
of the character's bounding box is to the left of the character's
origin. The left italic correction may be negative unless
option -m is given.
This option is normally needed only with italic (or oblique)
fonts. The font files distributed with groff were created using
an option of -i50 for italic fonts.
-m Prevent negative left italic correction values. Roman font
files distributed with groff were created with -i0 -m to improve
spacing with eqn(1).
-n Don't output a ligatures command for this font. Use this with
-s The font is special. The effect of this option is to add the
special command to the font file.
-v Print version.
Device description file.
Font description file for font F.
List of downloadable fonts.
Encoding used for text fonts.
groff(1), grops(1), groff_font(5), perl(1)
The groff info file, section `Using Symbols'.
Groff Version 1.19 1 May 2003 AFMTODIT(1)
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