lib::Font::AFM(User Contributed Perl Documentatilib::Font::AFM(3)NAMEFont::AFM - Interface to Adobe Font Metrics files
SYNOPSIS
use Font::AFM;
$h = new Font::AFM "Helvetica";
$copyright = $h->Notice;
$w = $h->Wx->{"aring"};
$w = $h->stringwidth("Gisle", 10);
$h->dump; # for debugging
DESCRIPTION
This module implements the Font::AFM class. Objects of
this class are initialised from an AFM-file and allows you
to obtain information about the font and the metrics of
the various glyphs in the font.
All measurements in AFM files are given in terms of units
equal to 1/1000 of the scale factor of the font being
used. To compute actual sizes in a document, these amounts
should be multiplied by (scale factor of font)/1000.
The following methods are available:
new($fontname)
Object constructor. Takes the name of the font as
argument. It will croak if the font can not be found.
latin1_wx_table()
Returns a 256 element array, where each element
contains the width of the corresponding character in
the iso-8859-1 character set.
stringwidth($string, [$fontsize])
Returns the width of the string passed as argument. The
string is assumed to be encoded in the iso-8859-1
character set. A second argument can be used to scale
the width according to the font size.
FontName
The name of the font as presented to the PostScript
language findfont operator, for instance "Times-Roman".
FullName
Unique, human-readable name for an individual font, for
instance "Times Roman".
FamilyName
Human-readable name for a group of fonts that are
stylistic variants of a single design. All fonts that
are member of such a group should have exactly the same
FamilyName. Example of a family name is "Times".
24/Aug/1997 perl 5.005, patch 03 1
lib::Font::AFM(User Contributed Perl Documentatilib::Font::AFM(3)
Weight
Human-readable name for the weight, or "boldness",
attribute of a font. Exampes are Roman, Bold, Light.
ItalicAngle
Angle in degrees counterclockwise from the vertical of
the dominant vertical strokes of the font.
IsFixedPitch
If the value is true, it indicated that the font is a
fixed-pitch (monospaced) font.
FontBBox
A string of four numbers giving the lower-left x,
lower-left y, upper-right x, and upper-right y of the
font bounding box. The font bounding box is the
smallest rectangle enclosing the shape that would
result if all the characters of the font were placed
with their origins coincident, and then painted.
UnderlinePosition
Recommended distance from the baseline for positioning
underline stokes. This number is the y coordinate of
the center of the stroke.
UnderlineThickness
Recommended stroke width for underlining.
Version
Version number of the font.
Notice
Trademark or copyright notice, if applicable.
Comment
Comments found in the AFM file.
EncodingScheme
The name of the standard encoding scheme for the font.
Most Adobe fonts use the AdobeStandardEncoding. Special
fonts might state FontSpecific.
CapHeight
Usually the y-value of the top of the capital H.
XHeight
Typically the y-value of the top of the lowercase x.
Ascender
Typically the y-value of the top of the lowercase d.
Descender
Typically the y-value of the bottom of the lowercase p.
24/Aug/1997 perl 5.005, patch 03 2
lib::Font::AFM(User Contributed Perl Documentatilib::Font::AFM(3)
Wx Returns a hash table that maps from glyph names to the
width of that glyph.
BBox
Returns a hash table that maps from glyph names to
bounding box information. The bounding box consist of
4 numbers: llx, lly, urx, ury.
dump
Dumps the content of the Font::AFM object to STDOUT.
Might sometimes be useful for debugging.
The AFM specification can be found at:
ftp://ftp.adobe.com/pub/adobe/DeveloperSupport/TechNotes/PSfiles/5004.AFM_Spec.ps
ENVIRONMENT
METRICS Contains the path to seach for AFM-files.
Format is as for the PATH environment variable.
The default path built into this library is:
/usr/lib/afm:/usr/local/lib/afm:/usr/openwin/lib/fonts/afm/:.
BUGS
Kerning data and composite character data is not yet
parsed. Ligature data is not parsed.
COPYRIGHT
Copyright 1995 Gisle Aas. All rights reserved.
This program is free software; you can redistribute it
and/or modify it under the same terms as Perl itself.
24/Aug/1997 perl 5.005, patch 03 3
lib::Font::AFM(User Contributed Perl Documentatilib::Font::AFM(3)24/Aug/1997 perl 5.005, patch 03 4
