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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Class with Font related methods.
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* Class with Font related methods.
*
* @package PhpMyAdmin
*/
class PMA_Font
{
/**
* Get list with characters and the corresponding width modifiers.
*
* @param string $font name of the font like Arial,sans-serif etc
*
* @return array with characters and corresponding width modifier
* @access public
*/
public static function getCharLists($font)
{
// list of characters and their width modifiers
$charLists = array();
//ijl
$charLists[] = array("chars" => array("i", "j", "l"), "modifier" => 0.23);
//f
$charLists[] = array("chars" => array("f"), "modifier" => 0.27);
//tI
$charLists[] = array("chars" => array("t", "I"), "modifier" => 0.28);
//r
$charLists[] = array("chars" => array("r"), "modifier" => 0.34);
//1
$charLists[] = array("chars" => array("1"), "modifier" => 0.49);
//cksvxyzJ
$charLists[] = array(
"chars" => array("c", "k", "s", "v", "x", "y", "z", "J"),
"modifier" => 0.5
);
//abdeghnopquL023456789
$charLists[] = array(
"chars" => array(
"a", "b", "d", "e", "g", "h", "n", "o", "p", "q", "u", "L",
"0", "2", "3", "4", "5", "6", "7", "8", "9"
),
"modifier" => 0.56
);
//FTZ
$charLists[] = array("chars" => array("F", "T", "Z"), "modifier" => 0.61);
//ABEKPSVXY
$charLists[] = array(
"chars" => array("A", "B", "E", "K", "P", "S", "V", "X", "Y"),
"modifier" => 0.67
);
//wCDHNRU
$charLists[] = array(
"chars" => array("w", "C", "D", "H", "N", "R", "U"),
"modifier" => 0.73
);
//GOQ
$charLists[] = array("chars" => array("G", "O", "Q"), "modifier" => 0.78);
//mM
$charLists[] = array("chars" => array("m", "M"), "modifier" => 0.84);
//W
$charLists[] = array("chars" => array("W"), "modifier" => 0.95);
//" "
$charLists[] = array("chars" => array(" "), "modifier" => 0.28);
return $charLists;
}
/**
* Get width of string/text
*
* The text element width is calculated depending on font name
* and font size.
*
* @param string $text string of which the width will be calculated
* @param string $font name of the font like Arial,sans-serif etc
* @param integer $fontSize size of font
* @param array $charLists list of characters and their width modifiers
*
* @return integer width of the text
* @access public
*/
public static function getStringWidth($text, $font, $fontSize, $charLists = null)
{
if (empty($charLists) || !is_array($charLists)
|| !isset($charLists[0]["chars"]) || !is_array($charLists[0]["chars"])
|| !isset($charLists[0]["modifier"])
) {
$charLists = self::getCharLists($font);
}
/*
* Start by counting the width, giving each character a modifying value
*/
$count = 0;
foreach ($charLists as $charList) {
$count += ((strlen($text)
- strlen(str_replace($charList["chars"], "", $text))
) * $charList["modifier"]);
}
$text = str_replace(" ", "", $text);//remove the " "'s
//all other chars
$count = $count + (strlen(preg_replace("/[a-z0-9]/i", "", $text)) * 0.3);
$modifier = 1;
$font = strtolower($font);
switch ($font) {
/*
* no modifier for arial and sans-serif
*/
case 'arial':
case 'sans-serif':
break;
/*
* .92 modifer for time, serif, brushscriptstd, and californian fb
*/
case 'times':
case 'serif':
case 'brushscriptstd':
case 'californian fb':
$modifier = .92;
break;
/*
* 1.23 modifier for broadway
*/
case 'broadway':
$modifier = 1.23;
break;
}
$textWidth = $count*$fontSize;
return ceil($textWidth*$modifier);
}
}
?>
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