Class: I2CE FontMetricTTF

This article desrcibes the class I2CE_FontMetricTTF.

• Extends the class: I2CE_FontMetricMultiDirection.
• Location: Part of the module textlayout in the package TextLayout Tools
• Source: Defined in the file lib/I2CE_FontMetricTTF.php
• Author: Carl Leitner <litlfred@ibiblio.org>

Class to contain information about font metrics. Data extracted from TTF files

Variables

$ttf_file

• Type: protected $ttf_file

$ttf_handle

• Type: protected $ttf_handle

$directory

• Type: protected $directory

$numOfLongHorMetrics

• Type: protected $numOfLongHorMetrics

$num_glyphs

• Type: protected $num_glyphs

$GIDtoCPs

• Type: protected $GIDtoCPs

$indexToLocFormat

• Type: protected $indexToLocFormat

$glyph_offsets

• Type: protected $glyph_offsets

$units_per_em

• Type: protected $units_per_em

$file_size

• Type: protected $file_size

$fix

Some common incorrect glyph names

• Type: static protected fix $fix

Methods

__construct()

• Signature: public function __construct($encoding,$ttf_file)
• Parameters:
  • &$encoding
• $ttf_file

close()

• Signature: protected function close()

generate_PDF_CMAP()

• Signature: public function generate_PDF_CMAP($platform_id,$platform_specific_id)
• Parameters:
• $platform_id
  • • Default Value: null
• $platform_specific_id
  • • Default Value: null

getCIDtoGIDmap()

$param int $platform_id is the Platform ID. Default is null which means we dont care. The platform ID follows this table

Platform ID	Platform	Specific encoding
0	Unicode	Indicates Unicode version.
1	Macintosh	Script Manager code.
3	Microsoft	Microsoft encoding.

• Signature: public function getCIDtoGIDmap($platform_id,$platform_specific_id)
• Parameters:
• $platform_id
  • • Default Value: null
  • int $platform_specific_id The platform specific id's identify languages used on a platform. Their values are outline in:http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html#ID. Set to null(default) if you dont care which one
    • Default Value: null

getEncodedCharactersFromGlyphID()

• Signature: public function getEncodedCharactersFromGlyphID($gid)
• Parameters:
• $gid

getTTFFile()

• Signature: public function getTTFFile()

getUnicodeCodepointsFromGlyphID()

• Signature: public function getUnicodeCodepointsFromGlyphID($gid)
• Parameters:
• $gid

gotoTable()

• Signature: protected function gotoTable($table)
• Parameters:
• $table

inDirectory()

• Signature: protected function inDirectory($table)
• Parameters:
• $table

loadDirectory()

Reference:http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6.html

• Signature: protected function loadDirectory()

loadin()

• Signature: protected function loadin($file)
• Parameters:
• $file

openForReading()

• Signature: protected function openForReading()

read_FWord()

• Signature: protected function read_FWord()

read_fixed_pieces()

DATA TYPES: http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6.html#Types Macintosh Data type OS/2 Data Type Description uint8 BYTE 8-bit unsigned integer int8 CHAR 8-bit signed integer uint16 USHORT 16-bit unsigned integer int16 SHORT 16-bit signed integer uint32 ULONG 32-bit unsigned integer int32 LONG 32-bit signed integer shortFrac - 16-bit signed fraction Fixed - 16.16-bit signed fixed-point number FWord - 16-bit signed integer that describes a quantity in FUnits, the smallest measurable distance in em space. uFWord - 16-bit unsigned integer that describes a quantity in FUnits, the smallest measurable distance in em space. F2Dot14 - 16-bit signed fixed number with the low 14 bits representing fraction. longDateTime - The long internal format of a date in seconds since 12:00 midnight, January 1, 1904. It is represented as a signed 64-bit integer. NOTE: We are Big-Endian here

• Signature: protected function read_fixed_pieces()

read_glyf()

• Signature: protected function read_glyf()

read_head()

• Signature: protected function read_head()

read_hhea()

• Signature: protected function read_hhea()

read_hmtx()

See http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6hmtx.html

• Signature: protected function read_hmtx()

read_int16()

• Signature: protected function read_int16()

read_int32()

• Signature: protected function read_int32()

read_int8()

• Signature: protected function read_int8()

read_kern()

• Signature: public function read_kern($old_format)
• Parameters:
• $old_format
  • • Default Value: true

read_loca()

• Signature: protected function read_loca()

read_name()

• Signature: protected function read_name()

read_numGlyphs()

• Signature: protected function read_numGlyphs()

read_uFWord()

• Signature: protected function read_uFWord()

read_uint16()

• Signature: protected function read_uint16()

read_uint32()

• Signature: protected function read_uint32()

read_uint8()

• Signature: protected function read_uint8()

setCIDtoGID()

• Signature: protected function setCIDtoGID($CIDtoGID,$cid,$gid,$warning,$try_unicode)
• Parameters:
  • &$CIDtoGID
• $cid
• $gid
• $warning
• $try_unicode
  • • Default Value: false

showCharacterInfo()

• Signature: public function showCharacterInfo()

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