/dompdf/include/font_metrics.cls.php
PHP | 299 lines | 165 code | 14 blank | 120 comment | 5 complexity | 18aa6aeb70c75ed1a4bbb1b4d164398d MD5 | raw file
Possible License(s): LGPL-2.1
- <?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.dompdf.com/
- *
- * @link http://www.dompdf.com/
- * @copyright 2004 Benj Carson
- * @author Benj Carson <benjcarson@digitaljunkies.ca>
- * @contributor Helmut Tischer <htischer@weihenstephan.org>
- * @package dompdf
- *
- * Changes
- * @contributor Helmut Tischer <htischer@weihenstephan.org>
- * @version 0.5.1.htischer.20090507
- * - On missing font on explicite font selection don't change subtype and don't return default font.
- * - On requesting default font and missing subtype, check similar subtypes, then any subtype, then normal. The last must exist.
- * - Add comments
- */
- /* $Id: font_metrics.cls.php 355 2011-01-27 07:44:54Z fabien.menager $ */
- require_once(DOMPDF_LIB_DIR . "/class.pdf.php");
- /**
- * Name of the font cache file
- *
- * This file must be writable by the webserver process only to update it
- * with save_font_families() after adding the .afm file references of a new font family
- * with Font_Metrics::save_font_families().
- * This is typically done only from command line with load_font.php on converting
- * ttf fonts to afm with an external tool referenced in the define _TTF2AFM
- *
- * Declared here because PHP5 prevents constants from being declared with expressions
- */
- if (!defined("__DOMPDF_FONT_CACHE_FILE")) {
- if (file_exists(DOMPDF_FONT_DIR . "dompdf_font_family_cache")) {
- define('__DOMPDF_FONT_CACHE_FILE', DOMPDF_FONT_DIR . "dompdf_font_family_cache");
- } else {
- define('__DOMPDF_FONT_CACHE_FILE', DOMPDF_FONT_DIR . "dompdf_font_family_cache.dist.php");
- }
- }
- /**
- * 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 Canvas} object to perform text size calculations
- *
- * @var Canvas
- */
- 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, $word_spacing = 0, $char_spacing = 0) {
- return self::$_pdf->get_text_width($text, $font, $size, $word_spacing, $char_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") {
- /* Allow calling for various fonts in search path. Therefore not immediately
- * return replacement on non match.
- * Only when called with NULL try replacement.
- * When this is also missing there is really trouble.
- * If only the subtype fails, nevertheless return failure.
- * Only on checking the fallback font, check various subtypes on same font.
- */
- if ( $family ) {
- $family = str_replace( array("'", '"'), "", mb_strtolower($family));
- $subtype = mb_strtolower($subtype);
- if ( isset(self::$_font_lookup[$family][$subtype]) ) {
- return self::$_font_lookup[$family][$subtype];
- }
- return null;
- }
- $family = DOMPDF_DEFAULT_FONT;
- if ( isset(self::$_font_lookup[$family][$subtype]) ) {
- return self::$_font_lookup[$family][$subtype];
- }
- foreach ( self::$_font_lookup[$family] as $sub => $font ) {
- if (strpos($subtype, $sub) !== false) {
- return $font;
- }
- }
- if ($subtype !== "normal") {
- foreach ( self::$_font_lookup[$family] as $sub => $font ) {
- if ($sub !== "normal") {
- return $font;
- }
- }
- }
- $subtype = "normal";
- if ( isset(self::$_font_lookup[$family][$subtype]) ) {
- return self::$_font_lookup[$family][$subtype];
- }
- return null;
- }
- /**
- * 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() {
- // replace the path to the DOMPDF font directory with "DOMPDF_FONT_DIR" (allows for more portability)
- $cache_data = var_export(self::$_font_lookup, true);
- $cache_data = str_replace('\''.DOMPDF_FONT_DIR , 'DOMPDF_FONT_DIR . \'' , $cache_data);
- $cache_data = "<"."?php return $cache_data ?".">";
- file_put_contents(self::CACHE_FILE, $cache_data);
- }
- /**
- * Loads the stored font family cache
- *
- * @see save_font_families()
- */
- static function load_font_families() {
- if ( !is_readable(self::CACHE_FILE) )
- return;
- self::$_font_lookup = require_once(self::CACHE_FILE);
-
- // If the font family cache is still in the old format
- if ( self::$_font_lookup === 1 ) {
- $cache_data = file_get_contents(self::CACHE_FILE);
- file_put_contents(self::CACHE_FILE, "<"."?php return $cache_data ?".">");
- self::$_font_lookup = require_once(self::CACHE_FILE);
- }
- }
-
- static function get_system_fonts() {
- $files = glob("/usr/share/fonts/truetype/*.ttf") +
- glob("/usr/share/fonts/truetype/*/*.ttf") +
- glob("/usr/share/fonts/truetype/*/*/*.ttf") +
- glob("C:\\Windows\\fonts\\*.ttf") +
- glob("C:\\WinNT\\fonts\\*.ttf") +
- glob("/mnt/c_drive/WINDOWS/Fonts/");
-
- new TTF_Info;
-
- $names = array();
-
- foreach($files as $file) {
- $info = getFontInfo($file);
- $info["path"] = $file;
- $type = $info[2];
-
- if (preg_match("/regular|normal|medium|book/i", $type)) {
- $type = "normal";
- }
- elseif (preg_match("/bold/i", $type)) {
- if (preg_match("/italic|oblique/i", $type)) {
- $type = "bold_italic";
- }
- else {
- $type = "bold";
- }
- }
- elseif (preg_match("/italic|oblique/i", $type)) {
- $type = "italic";
- }
-
- $names[mb_strtolower($info[1])][$type] = $file;
- }
-
- $keys = array_keys($names);
-
- /*$matches = array_intersect(array("times", "times new roman"), $keys);
- $names["serif"] = $names[reset($matches)];
-
- $matches = array_intersect(array("helvetica", "arial", "verdana"), $keys);
- $names["sans-serif"] = $names[reset($matches)];
-
- $matches = array_intersect(array("courier", "courier new"), $keys);
- $names["monospace"] = $names[reset($matches)];
- $names["fixed"] = $names[reset($matches)];*/
-
- return $names;
- }
- /**
- * Returns the current font lookup table
- *
- * @return array
- */
- static function get_font_families() {
- return self::$_font_lookup;
- }
- static function set_font_family($fontname, $entry) {
- self::$_font_lookup[mb_strtolower($fontname)] = $entry;
- }
- }
- Font_Metrics::init();