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| This article desrcibes the class '''I2CE_FontMetric'''
| | #REDIRECT [[Class: I2CE_FontMetric (4.1.12)]] |
| It is contained in the module [[iHRIS Module List#textlayout|textlayout]] in the package [https://launchpad.net/textlayout TextLayout Tools]
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| The class is defined in the file: [http://bazaar.launchpad.net/~intrahealth+informatics/textlayout/4.0.0-release/annotate/head:/lib/I2CE_FontMetric.php lib/I2CE_FontMetric.php]
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| Class to contain information about font metrics.
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| @package I2CE
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| @subpackage TextLayout
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| @author Carl Leitner <litlfred@ibiblio.org>
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| @version 0.1
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| @access public
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| ==Variables==
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| ===$bbox===
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| protected @var $bbox of numeric. the bounding box with values in order llx lly urx ury
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| *Type: protected $bbox
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| ===$ascender===
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| protected @var numeric $ascender
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| *Type: protected $ascender
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| ===$descender===
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| protected @var numeric $ascender
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| *Type: protected $descender
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| ===$linegap===
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| protected @var numeric $linegap
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| *Type: protected $linegap
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| ===$is_fixed_width===
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| protected @var array of boolean $is_fixed_width whether or not this font is fixed width
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| *Type: protected $is_fixed_width
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| ===$fixed_character_width===
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| protected @var int the size of a fixed width character
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| *Type: protected $fixed_character_width
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| ===$fixed_character_height===
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| protected @var int the size of a fixed width character
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| *Type: protected $fixed_character_height
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| ===$size===
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| protected @var int $size the font size in points
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| *Type: protected $size
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| ===$encoding===
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| proteted @var I2CE_Encoding encoding data for the character set
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| *Type: protected $encoding
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| ===$kerning_table_pairs===
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| protected @var array of array of numbers $kerning_table_pairs the kerning table for pairs.
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| the first index is the preceeding character the second index is the following character
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| *Type: protected $kerning_table_pairs
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| ===$kerning_table_groups===
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| protected @var array of array of numbers $kerning_table_groups the kerning table for groups.
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| the first index is the group for the preceeding character the second index is the group for the following character
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| *Type: protected $kerning_table_groups
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| ===$kerning_groups===
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| protected $var array with keys character and values the kerning groups
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| *Type: protected $kerning_groups
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| ===$character_widths===
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| of floats containing $character_widths the character widths for the current font
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| to be super redundant the keys will be either the character code
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| or the glyph name
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| *Type: public y $character_widths
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| ===$character_heights===
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| of array of floats $character_heights containing the character heights for the current font
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| to be super redundant the keys will be either the character code
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| or the glyph name
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| *Type: public y $character_heights
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| ===$character_info===
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| of array of mixed $character_info containing character information (besides the width)
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| *Type: public y $character_info
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| ===$font_info===
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| protected @var array of mixed global font information
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| *Type: protected $font_info
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| ==Methods==
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| ===__construct()===
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| needs to be one that is a valid encoding for PHP multibyte strings.
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| *Signature: public function __construct($encoding)
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| Parameters:
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| * [[Class: I2CE_Encoding | I2CE_Encoding]] $encoding<br/>the encoding used for the internal storage of strings/characters
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| ===getAllFontCharacteristics()===
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| Get all the font information
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| *Signature: public function getAllFontCharacteristics()
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| ===getAscender()===
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| get the asceneder value
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| *Signature: public function getAscender()
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| *Returns: [http://www.php.net/manual/en/language.pseudo-types.php numeric] $ascender
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| *
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| ===getBoundingBox()===
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| Get the bounding box
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| $returns array $bbox of numeric. The bounding box in llx lly urx ury order
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| *Signature: public function getBoundingBox()
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| ===getCharacterHeight()===
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| Gets the character height of a character
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| @param bool use_font_size default false --
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| *Signature: public function getCharacterHeight($ch,$use_font_size)
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| *Returns: [http://www.php.net/manual/en/language.types.float.php float] the width
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch<br/>a character
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| *$use_font_size
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| **Default Value: false
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| ===getCharacterHeights()===
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| Get the character heights
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| *Signature: public function getCharacterHeights()
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| *Returns: [http://www.php.net/manual/en/language.types.array.php array] of number, the values of which are the heights
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| and the keys of which are some combination of
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| glpyh names, character codes, and unicodes codepoints, or characters
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| ===getCharacterInfo()===
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| Get information associated to a character
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| *Signature: public function getCharacterInfo($ch,$key)
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| *Returns: [http://www.php.net/manual/en/language.pseudo-types.php mixed] $value
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch<br/>a character (or glyphname)
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $key
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| ===getCharacterWidth()===
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| Gets the character width of a character
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| @param bool use_font_size default false --
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| *Signature: public function getCharacterWidth($ch,$use_font_size)
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| *Returns: [http://www.php.net/manual/en/language.types.float.php float] the width
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch<br/>a character (or glyphname)
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| *$use_font_size
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| **Default Value: false
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| ===getCharacterWidths()===
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| Get the character widths
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| *Signature: public function getCharacterWidths()
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| *Returns: [http://www.php.net/manual/en/language.types.array.php array] of number, the values of which are the widths
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| and the keys of which are some combination of
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| glpyh names, character codes, and unicodes codepoints, or characters
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| ===getDescender()===
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| get the desceneder value
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| *Signature: public function getDescender()
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| *Returns: [http://www.php.net/manual/en/language.pseudo-types.php numeric] $descender
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| *
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| ===getEncoding()===
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| Get the encoding used for the internal storage of strings/characters
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| *Signature: public function getEncoding()
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| *Returns: [http://www.php.net/manual/en/language.types.string.php string]
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| ===getFixedStringWidth()===
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| Caluclulate the length of a fixed width string
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| *Signature: protected function getFixedStringWidth($string)
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| *Returns: float/int the length of the string
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| Parameters:
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| * [http://www.php.net/manual/en/language.types.string.php string] $string<br/>the string we wish to calculate the length of
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| ===getFixedWidth()===
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| Get the width of a character in a fixed width font
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| *Signature: public function getFixedWidth()
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| *Returns: number Returns null if called when the current font is not fixed width
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| ===getFontCharacteristic()===
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| Get a global font characteristic
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| @param $key
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| *Signature: public function getFontCharacteristic($key)
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| *Returns: [http://www.php.net/manual/en/language.pseudo-types.php mixed] the value associated to the $key
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| Parameters:
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| *$key
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| ===getFontSize()===
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| Get the font size
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| *Signature: public function getFontSize()
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| *Returns: [http://www.php.net/manual/en/language.types.integer.php int]
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| ===getKerningByGroup()===
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| get the kerning values associated to a pair of groups
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| @param bool use_font_size default false --
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| *Signature: public function getKerningByGroup($g1,$g2,$use_font_size)
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| *Returns: [http://www.php.net/manual/en/language.pseudo-types.php numeric] $kern the kerning value or null if none found
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $g1<br/>the preceeding group
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $g2<br/>the following group
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| *$use_font_size
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| **Default Value: false
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| ===getKerningByPair()===
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| get the kerning values associated to a pair of character
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| @param bool use_font_size default false --
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| *Signature: public function getKerningByPair($ch1,$ch2,$use_font_size)
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| *Returns: [http://www.php.net/manual/en/language.pseudo-types.php numeric] the kerning value or null if there is none found
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch1<br/>the preceeding character
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch2<br/>the following character
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| *$use_font_size
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| **Default Value: false
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| ===getKerningGroup()===
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| Get the kerning groups associated to a character
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| *Signature: public function getKerningGroup($ch)
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| *Returns: [http://www.php.net/manual/en/language.pseudo-types.php mixed] the group
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch<br/>the character
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| ===getKerningValue()===
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| Return the (horizontal) kerning values for a pair of characters
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| If there is kerning info for both groups and pairs,
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| the pairs takes prescedence
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| @params string $ch1 the left characcter
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| @params string $ch2 the right character
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| @param bool use_font_size default false --
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| *Signature: public function getKerningValue($ch1,$ch2,$use_font_size)
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| *Returns: number the kerning value or null if none is found
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| Parameters:
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| *$ch1
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| *$ch2
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| *$use_font_size
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| ===getLinegap()===
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| get the line gap value
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| *Signature: public function getLinegap()
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| *Returns: [http://www.php.net/manual/en/language.pseudo-types.php numeric] $linegap
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| *
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| ===getStringWidth()===
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| Caluclulate the length of a string
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| *Signature: public function getStringWidth($string,$use_font_size)
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| *Returns: float/int the length of the string
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| note: if it is a fixed width font, we assume that all characters are printable. in particular
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| a line break is considered a printable character. If you have line breaks to deal with
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| @param bool use_font_size default false --
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| you should see TextColumn
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| Parameters:
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| * [http://www.php.net/manual/en/language.types.string.php string] $string<br/>the string we wish to calculate the length of
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| *$use_font_size
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| **Default Value: false
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| ===getTrackingValues()===
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| Get the tracking values for the current font size
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| *Signature: public function getTrackingValues()
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| *Returns: [http://www.php.net/manual/en/language.types.array.php array] $values of floats. $values[0] is the minimum, $values[1] is the maximum or null if
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| if there is no tracking values
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| ===getVariableStringWidth()===
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| Function caluclulate the length of a variable width string
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| @param bool use_font_size default false --
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| *Signature: protected function getVariableStringWidth($string)
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| *Returns: [http://www.php.net/manual/en/language.types.float.php float] the length of the string
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| Parameters:
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| * [http://www.php.net/manual/en/language.types.string.php string] $string<br/>the string we wish to calculate the length of
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| ===isFixedWidth()===
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| Check to see if the current font is fixed width
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| *Signature: public function isFixedWidth()
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| *Returns: [http://www.php.net/manual/en/language.types.boolean.php boolean] true if it is fixed width
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| ===setAscender()===
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| set the asceneder value
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| *
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| *Signature: public function setAscender($ascender)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php numeric] $ascender
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| ===setBoundingBox()===
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| Set the bounding box
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| $param array $bbox of numeric. The bounding box in llx lly urx ury order
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| *Signature: public function setBoundingBox($bbox)
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| Parameters:
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| *$bbox
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| ===setCharacterHeight()===
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| Sets the character width of a character
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| *Signature: public function setCharacterHeight($ch,$h)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch<br/>a character (or glyphname)
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| * [http://www.php.net/manual/en/language.pseudo-types.php numeric] $h<br/>the $height
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| ===setCharacterInfo()===
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| Sets information associated to a character
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| *Signature: public function setCharacterInfo($ch,$key,$value)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch<br/>a character (or glyphname)
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $key
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $value
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| ===setCharacterWidth()===
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| Sets the character width of a character
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| *Signature: public function setCharacterWidth($ch,$w)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch<br/>a character (or glyphname)
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| * numeriv $w<br/>the width
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| ===setDescender()===
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| set the desceneder value
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| *
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| *Signature: public function setDescender($descender)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php numeric] $descender
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| ===setFixedHeightSize()===
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| set the fixed height character size
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| *Signature: public function setFixedHeightSize($height)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php numeric] $height<br/>the width
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| ===setFixedWidth()===
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| Set whether or not this is a fixed width font
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| @parma boolean $is_fixed_width
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| *Signature: public function setFixedWidth($is_fixed_width)
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| Parameters:
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| *$is_fixed_width
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| ===setFixedWidthSize()===
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| set the fixed width character size
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| *Signature: public function setFixedWidthSize($width)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php numeric] $width<br/>the width
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| ===setFontCharacteristic()===
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| Set a global font characteristic
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| *Signature: public function setFontCharacteristic($key,$value)
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| Parameters:
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| * [http://www.php.net/manual/en/language.types.string.php string] $key
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $value
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| ===setFontSize()===
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| Set the font size
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| @params int $size
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| *Signature: public function setFontSize($size)
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| Parameters:
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| *$size
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| ===setKerningByGroup()===
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| get the kerning values associated to a pair of groups
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| @params numeric $kern the kerning value
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| *Signature: public function setKerningByGroup($g1,$g2,$kern)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $g1<br/>the preceeding group
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $g2<br/>the following grou
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| *$kern
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| ===setKerningByPair()===
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| set the kerning values associated to a pair of character
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| @params numeric $kern the kerning value
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| *Signature: public function setKerningByPair($ch1,$ch2,$kern)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch1<br/>the preceeding character
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch2<br/>the following character
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| *$kern
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| ===setKerningGroup()===
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| Set the kerning groups associated to a character
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| *Signature: public function setKerningGroup($ch,$group)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $ch<br/>the character
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| * [http://www.php.net/manual/en/language.pseudo-types.php mixed] $group<br/>the group
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| ===setLinegap()===
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| set the line gap value
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| *
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| *Signature: public function setLinegap($linegap)
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| Parameters:
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| * [http://www.php.net/manual/en/language.pseudo-types.php numeric] $linegap
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| [[Category:Class Documentation]]
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