Class: I2CE FontMetricMultiDirection

This article desrcibes the class I2CE_FontMetricMultiDirection.

• Extends the class: I2CE_FontMetric.
• Location: Part of the module textlayout in the package TextLayout Tools
• Source: Defined in the file lib/I2CE_FontMetricMultiDirection.php
• Author: Carl Leitner <litlfred@ibiblio.org>

Class to contain information about font metrics. Setup to handle multiple directions.

Variables

$font_metrics

protecteed @var array of I2CE_FontMetric $font_metrics contains the fonr metrics that are global or for user defined directions

• Type: protected $font_metrics

$direction

• Type: protected $direction

$directions

• Type: protected $directions

Methods

__construct()

The constructor @params array $directions of mixed the directions. the value -1 is reserved for global information array has a default value of 0 (horizontal) and 1 (vertical). Sets the direction to be $directions[0]

• Signature: public function __construct($directions,$encoding)
• Parameters:
  • $directions
  • 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.

getAllFontCharacteristics()

Get all the font information

• Signature: public function getAllFontCharacteristics()

getAscender()

get the asceneder value

• Signature: public function getAscender()
• Returns: numeric
  $ascender *

getBoundingBox()

Get the bounding box $returns array $bbox of numeric. The bounding box in llx lly urx ury order

• Signature: public function getBoundingBox()

getCharacterHeight()

Gets the character height of a character

• Signature: public function getCharacterHeight($ch,$use_font_size)
• Parameters:
  • mixed $ch
    a character @param bool use_font_size default false --
  • $use_font_size
    • Default Value: false
• Returns: float
  the width

getCharacterHeights()

Get the character heights

• Signature: public function getCharacterHeights()
• Returns: array
  of number, the values of which are the heights and the keys of which are some combination of glpyh names, character codes, and unicodes codepoints, or characters

getCharacterInfo()

Get information associated to a character

• Signature: public function getCharacterInfo($ch,$key)
• Parameters:
  • mixed $ch
    a character (or glyphname)
  • mixed $key
• Returns: mixed
  $value

getCharacterWidth()

Gets the character width of a character

• Signature: public function getCharacterWidth($ch,$use_font_size)
• Parameters:
  • mixed $ch
    a character @param bool use_font_size default false --
  • $use_font_size
    • Default Value: false
• Returns: float
  the width

getCharacterWidths()

Get the character widths

• Signature: public function getCharacterWidths()
• Returns: array
  of number, the values of which are the widths and the keys of which are some combination of glpyh names, character codes, and unicodes codepoints, or characters

getDescender()

get the desceneder value

• Signature: public function getDescender()
• Returns: numeric
  $descender *

getDirection()

Function to get the font direction

• Signature: public function getDirection()
• Returns: mixed

getDirections()

Function to get the possible directions

• Signature: public function getDirections($add_global)
• Parameters:
  • boolena $add_global
    (defaults to false) whether or not to include the global direction, -1
    • Default Value: false
• Returns: array
  of mixed -- the directions

getEncoding()

Get the encoding information for the font. This is global info

• Signature: public function getEncoding()
• Returns: I2CE_Encoding

getFixedStringWidth()

Function caluclulate the length of a fixed width string

• Signature: protected function getFixedStringWidth($string,$use_font_size)
• Parameters:
  • string $string
    the string we wish to calculate the length of @param bool use_font_size default false --
  • $use_font_size
    • Default Value: false
• Returns: float
  the length of the string

getFixedWidth()

Get the width of a character in a fixed width font (for the current direction)

• Signature: public function getFixedWidth()
• Returns: number
  Returns null if called when the current font is not fixed width

getFontCharacteristic()

Get a global font characteristic @param $key

• Signature: public function getFontCharacteristic($key)
• Parameters:
  • $key
• Returns: mixed
  the value associated to the $key

getFontSize()

Get the font size. This is global info.

• Signature: public function getFontSize()
• Returns: int

getKerningByGroup()

get the kerning values associated to a pair of groups

• Signature: public function getKerningByGroup($g1,$g2,$use_font_size)
• Parameters:
  • mixed $g1
    the preceeding group
  • mixed $g2
    the following group @param bool use_font_size default false --
  • $use_font_size
    • Default Value: false
• Returns: numeric
  $kern the kerning value or null if none found

getKerningByPair()

get the kerning values associated to a pair of character

• Signature: public function getKerningByPair($ch1,$ch2,$use_font_size)
• Parameters:
  • mixed $ch1
    the preceeding character
  • mixed $ch2
    the following character @param bool use_font_size default false --
  • $use_font_size
    • Default Value: false
• Returns: numeric
  the kerning value or null if there is none found

getKerningGroup()

Get the kerning groups associated to a character

• Signature: public function getKerningGroup($ch)
• Parameters:
  • mixed $ch
    the character
• Returns: mixed
  the group

getKerningValue()

Return the (horizontal) kerning values for a pair of characters @params string $ch1 the left characcter @params string $ch2 the right character @param bool use_font_size default false --

• Signature: public function getKerningValue($ch1,$ch2,$use_font_size)
• Parameters:
  • $ch1
  • $ch2
  • $use_font_size
    • Default Value: false
• Returns: float
  the kerning value or null if none is found

getLinegap()

get the line gap value

• Signature: public function getLinegap()
• Returns: numeric
  $linegap *

getStringWidth()

Caluclulate the length of a string

• Signature: public function getStringWidth($string,$use_font_size)
• Parameters:
  • string $string
    the string we wish to calculate the length of @param bool use_font_size default false --
  • $use_font_size
    • Default Value: false
• Returns: float/int
  the length of the string

getTrackingValues()

Get the tracking values for the current font size

• Signature: public function getTrackingValues()
• Returns: array
  $values of floats. $values[0] is the minimum, $values[1] is the maximum or null if if there is no tracking values

getVariableStringWidth()

Function caluclulate the length of a variable width string

• Signature: protected function getVariableStringWidth($string,$use_font_size)
• Parameters:
  • string $string
    the string we wish to calculate the length of @param bool use_font_size default false --
  • $use_font_size
    • Default Value: false
• Returns: float
  the length of the string

isFixedWidth()

Check to see if the current font is fixed width

• Signature: public function isFixedWidth()
• Returns: boolean
  true if it is fixed width

setAscender()

set the asceneder value

• Signature: public function setAscender($ascender)
• Parameters:
  • numeric $ascender *

setBoundingBox()

Set the bounding box $param array $bbox of numeric. The bounding box in llx lly urx ury order

• Signature: public function setBoundingBox($bbox)
• Parameters:
  • $bbox

setCharacterHeight()

Sets the character height of a character

• Signature: public function setCharacterHeight($ch,$h)
• Parameters:
  • mixed $ch
    a character
  • float $h
    height

setCharacterInfo()

Sets information associated to a character

• Signature: public function setCharacterInfo($ch,$key,$value)
• Parameters:
  • mixed $ch
    a character (or glyphname)
  • mixed $key
  • mixed $value

setCharacterWidth()

Sets the character width of a character

• Signature: public function setCharacterWidth($ch,$w)
• Parameters:
  • mixed $ch
    a character
  • float $w
    the width

setDescender()

set the desceneder value

• Signature: public function setDescender($descender)
• Parameters:
  • numeric $descender *

setDirection()

Function to set the font direction @params mixed $direction. -1 is global information, all other values are user defined directions.

• Signature: public function setDirection($direction)
• Parameters:
  • $direction

setFixedHeightSize()

set the fixed height character size

• Signature: public function setFixedHeightSize($height)
• Parameters:
  • numeric $height
    the height

setFixedWidth()

Set whether or not this is a fixed width font @parma boolean $is_fixed_width

• Signature: public function setFixedWidth($is_fixed_width)
• Parameters:
  • $is_fixed_width

setFixedWidthSize()

set the fixed width character size

• Signature: public function setFixedWidthSize($width)
• Parameters:
  • numeric $width
    the width

setFontCharacteristic()

Set a font characteristic

• Signature: public function setFontCharacteristic($key,$value)
• Parameters:
  • string $key
  • mixed $value

setFontSize()

Set the font size. This is global info. @params int $size

• Signature: public function setFontSize($size)
• Parameters:
  • $size

setGlobal()

Specify that we are working with global font metric information, e.g. glpyhnames, font size, etc.

• Signature: public function setGlobal()

setKerningByGroup()

set the kerning values associated to a pair of groups

• Signature: public function setKerningByGroup($g1,$g2,$kern)
• Parameters:
  • mixed $g1
    the preceeding group
  • mixed $g2
    the following group @params numeric $kern the kerning value
  • $kern

setKerningByPair()

set the kerning values associated to a pair of character

• Signature: public function setKerningByPair($ch1,$ch2,$kern)
• Parameters:
  • mixed $ch1
    the preceeding character
  • mixed $ch2
    the following character @params numeric $kern the kerning value
  • $kern

setKerningGroup()

Set the kerning groups associated to a character

• Signature: public function setKerningGroup($ch,$group)
• Parameters:
  • mixed $ch
    the character
  • mixed $group
    the group

setLinegap()

set the line gap value

• Signature: public function setLinegap($linegap)
• Parameters:
  • numeric $linegap *

Inherited Variables

$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