Class: I2CE FontMetricAFM

This article desrcibes the class I2CE_FontMetricAFM which extends the class I2CE_FontMetricMultiDirection It is contained in the module textlayout in the package TextLayout Tools

The class is defined in the file: lib/I2CE_FontMetricAFM.php

Class to contain information about font metrics. Modeled

after the data contained in the Adobe Font Metrics File Format Specification

http://www.adobe.com/devnet/font/pdfs/5004.AFM_Spec.pdf

@package I2CE

@subpackage TextLayout

@author Carl Leitner <litlfred@ibiblio.org>

@version 0.1

@access public

Note 1

the function getCharacterInfo

@returns mixed

@param key are the character information (besides the width)

in section 8 of Adobe Font Metrics File Format Specification

Note 2

the function getFontCharacteristic

@returns mixed

@param string $key are the keys

in section 4.2 of Adobe Font Metrics File Format Specification

values and keys are

FontName string

FullName string

FamilyName string

Weight string

FontBBox number number number number

Version string

Notice string

EncodingScheme string

MappingScheme integer

EscChar integer

CharacterSet string

Characters integer

IsBaseFont boolean

VVector number number

IsFixedV boolean

CapHeight number

XHeight number

Ascender number

Descender number

We also include section 4,3 of Adobe Font Metrics File Format Specification

for the following possible keys which are direction dependent

StartDirection integer

EndDirection

UnderlinePosition number

UnderlineThickness number

ItalicAngle number

CharWidth number number

IsFixedPitch boolean

Variables

$gn2cc

. Array are glpyh names values are character codes.

• Type: protected y $gn2cc

Methods

__construct()

@param I2CE_Encoding $encoding -- the encoding used for the internal storage of strings/characters needs to be one that is a valid encoding for PHP multibyte strings.

• Signature: public function __construct($internal_encoding,$file_encoding,$afmfile)

Parameters:

• &$internal_encoding
• I2CE_Encoding $file_encoding
  the character encoding used in the file afm file
• string $afmfile
  the afm file to load.

loadFontMetricFromAFM()

Load the font metrics from an afm file (Some of this code was stolen from makefont.php) Caution: Units for these files are 1/1000 of a point where a point is 1/72 of an inch

• Signature: protected function loadFontMetricFromAFM($encoding,$afmfile)

Parameters:

• I2CE_Encoding $encoding
  the character encoding used in the file
• string $afmfile

Inherited Variables

$font_metrics

Theis protected variable is inherited from I2CE_FontMetricMultiDirection->$font_metrics

$direction

Theis protected variable is inherited from I2CE_FontMetricMultiDirection->$direction

$directions

Theis protected variable is inherited from I2CE_FontMetricMultiDirection->$directions

$character_widths

Theis public variable is inherited from I2CE_FontMetric->$character_widths

$character_heights

Theis public variable is inherited from I2CE_FontMetric->$character_heights

$character_info

Theis public variable is inherited from I2CE_FontMetric->$character_info

$bbox

Theis protected variable is inherited from I2CE_FontMetric->$bbox

$ascender

Theis protected variable is inherited from I2CE_FontMetric->$ascender

$descender

Theis protected variable is inherited from I2CE_FontMetric->$descender

$linegap

Theis protected variable is inherited from I2CE_FontMetric->$linegap

$is_fixed_width

Theis protected variable is inherited from I2CE_FontMetric->$is_fixed_width

$fixed_character_width

Theis protected variable is inherited from I2CE_FontMetric->$fixed_character_width

$fixed_character_height

Theis protected variable is inherited from I2CE_FontMetric->$fixed_character_height

$size

Theis protected variable is inherited from I2CE_FontMetric->$size

$encoding

Theis protected variable is inherited from I2CE_FontMetric->$encoding

$kerning_table_pairs

Theis protected variable is inherited from I2CE_FontMetric->$kerning_table_pairs

$kerning_table_groups

Theis protected variable is inherited from I2CE_FontMetric->$kerning_table_groups

$kerning_groups

Theis protected variable is inherited from I2CE_FontMetric->$kerning_groups

$font_info

Theis protected variable is inherited from I2CE_FontMetric->$font_info