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