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AFM(3)			       User Contributed Perl Documentation			   AFM(3)

NAME
       Font::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 (Adobe Font Metrics) file and allow 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:

       $afm = Font::AFM->new($fontname)
	  Object constructor. Takes the name of the font as argument.  Croaks if the font can not
	  be found.

       $afm->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.

       $afm->stringwidth($string, [$fontsize])
	  Returns the width of the argument string. 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.

       $afm->FontName
	  The name of the font as presented to the PostScript language "findfont" operator, for
	  instance "Times-Roman".

       $afm->FullName
	  Unique, human-readable name for an individual font, for instance "Times Roman".

       $afm->FamilyName
	  Human-readable name for a group of fonts that are stylistic variants of a single
	  design. All fonts that are members of such a group should have exactly the same
	  "FamilyName". Example of a family name is "Times".

       $afm->Weight
	  Human-readable name for the weight, or "boldness", attribute of a font.  Examples are
	  "Roman", "Bold", "Light".

       $afm->ItalicAngle
	  Angle in degrees counterclockwise from the vertical of the dominant vertical strokes of
	  the font.

       $afm->IsFixedPitch
	  If "true", the font is a fixed-pitch (monospaced) font.

       $afm->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.

       $afm->UnderlinePosition
	  Recommended distance from the baseline for positioning underline strokes. This number
	  is the y coordinate of the center of the stroke.

       $afm->UnderlineThickness
	  Recommended stroke width for underlining.

       $afm->Version
	  Version number of the font.

       $afm->Notice
	  Trademark or copyright notice, if applicable.

       $afm->Comment
	  Comments found in the AFM file.

       $afm->EncodingScheme
	  The name of the standard encoding scheme for the font. Most Adobe fonts use the
	  "AdobeStandardEncoding". Special fonts might state "FontSpecific".

       $afm->CapHeight
	  Usually the y-value of the top of the capital H.

       $afm->XHeight
	  Typically the y-value of the top of the lowercase x.

       $afm->Ascender
	  Typically the y-value of the top of the lowercase d.

       $afm->Descender
	  Typically the y-value of the bottom of the lowercase p.

       $afm->Wx
	  Returns a hash table that maps from glyph names to the width of that glyph.

       $afm->BBox
	  Returns a hash table that maps from glyph names to bounding box information.	The
	  bounding box consist of four numbers: llx, lly, urx, ury.

       $afm->dump
	  Dumps the content of the Font::AFM object to STDOUT.	Might sometimes be useful for
	  debugging.

       The AFM specification can be found at:

	  http://partners.adobe.com/asn/developer/pdfs/tn/5004.AFM_Spec.pdf

ENVIRONMENT
       METRICS	 Contains the path to search 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 are not yet parsed.  Ligature data is not
       parsed.

COPYRIGHT
       Copyright 1995-1998 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.

perl v5.16.3				    2008-06-04					   AFM(3)
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