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<?php /** * DOMPDF - PHP5 HTML to PDF renderer * * File: $RCSfile: font_metrics.cls.php,v $ * Created on: 2004-06-02 * * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library in the file LICENSE.LGPL; if not, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA * 02111-1307 USA * * Alternatively, you may distribute this software under the terms of the * PHP License, version 3.0 or later. A copy of this license should have * been distributed with this file in the file LICENSE.PHP . If this is not * the case, you can obtain a copy at http://www.php.net/license/3_0.txt. * * The latest version of DOMPDF might be available at: * http://www.digitaljunkies.ca/dompdf * * @link http://www.digitaljunkies.ca/dompdf * @copyright 2004 Benj Carson * @author Benj Carson <benjcarson@digitaljunkies.ca> * @package dompdf * @version 0.5.1 */ /* $Id: font_metrics.cls.php,v 1.6 2006/07/07 21:31:03 benjcarson Exp $ */ require_once(DOMPDF_LIB_DIR . "/class.pdf.php"); /** * Name of the font cache file * * This file must be writable by the webserver process. Declared here * because PHP5 prevents constants from being declared with expressions */ define('__DOMPDF_FONT_CACHE_FILE', DOMPDF_FONT_DIR . "dompdf_font_family_cache"); /** * The font metrics class * * This class provides information about fonts and text. It can resolve * font names into actual installed font files, as well as determine the * size of text in a particular font and size. * * @static * @package dompdf */ class Font_Metrics { /** * @see __DOMPDF_FONT_CACHE_FILE */ const CACHE_FILE = __DOMPDF_FONT_CACHE_FILE; /** * Underlying {@link Cpdf} object to perform text size calculations * * @var Cpdf */ static protected $_pdf = null; /** * Array of font family names to font files * * Usually cached by the {@link load_font.php} script * * @var array */ static protected $_font_lookup = array(); /** * Class initialization * */ static function init() { if (!self::$_pdf) { self::load_font_families(); self::$_pdf = Canvas_Factory::get_instance(); } } /** * Calculates text size, in points * * @param string $text the text to be sized * @param string $font the desired font * @param float $size the desired font size * @param float $spacing word spacing, if any * @return float */ static function get_text_width($text, $font, $size, $spacing = 0) { return self::$_pdf->get_text_width($text, $font, $size, $spacing); } /** * Calculates font height * * @param string $font * @param float $size * @return float */ static function get_font_height($font, $size) { return self::$_pdf->get_font_height($font, $size); } /** * Resolves a font family & subtype into an actual font file * * Subtype can be one of 'normal', 'bold', 'italic' or 'bold_italic'. If * the particular font family has no suitable font file, the default font * ({@link DOMPDF_DEFAULT_FONT}) is used. The font file returned * is the absolute pathname to the font file on the system. * * @param string $family * @param string $subtype * @return string */ static function get_font($family, $subtype = "normal") { $family = str_replace( array("'", '"'), "", mb_strtolower($family)); $subtype = mb_strtolower($subtype); if ( !isset(self::$_font_lookup[$family]) ) $family = DOMPDF_DEFAULT_FONT; if ( !in_array($subtype, array("normal", "bold", "italic", "bold_italic")) ) //throw new DOMPDF_Exception("Font subtype '$subtype' is unsupported."); return self::$_font_lookup[DOMPDF_DEFAULT_FONT]["normal"]; if ( !isset(self::$_font_lookup[$family][$subtype]) ) return null; return self::$_font_lookup[$family][$subtype]; } /** * Saves the stored font family cache * * The name and location of the cache file are determined by {@link * Font_Metrics::CACHE_FILE}. This file should be writable by the * webserver process. * * @see Font_Metrics::load_font_families() */ static function save_font_families() { file_put_contents(self::CACHE_FILE, var_export(self::$_font_lookup, true)); } /** * Loads the stored font family cache * * @see save_font_families() */ static function load_font_families() { if ( !is_readable(self::CACHE_FILE) ) return; $data = file_get_contents(self::CACHE_FILE); if ( $data != "" ) eval ('self::$_font_lookup = ' . $data . ";"); } /** * Returns the current font lookup table * * @return array */ static function get_font_families() { return self::$_font_lookup; } static function set_font_family($fontname, $entry) { self::$_font_lookup[mb_strtolower($fontname)] = $entry; } } Font_Metrics::init(); ?>