filter/tex/settings.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * TeX filter settings
  19  *
  20  * @package    filter
  21  * @subpackage tex
  22  * @copyright  2007 Petr Skoda {@link http://skodak.org}
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 defined('MOODLE_INTERNAL') || die;
  27
  28 if ($ADMIN->fulltree) {
  29
  30     require_once($CFG->dirroot.'/filter/tex/lib.php');
  31
  32     $items = array();
  33     $items[] = new admin_setting_heading('filter_tex/latexheading', get_string('latexsettings', 'filter_tex'), '');
  34     $items[] = new admin_setting_configtextarea('filter_tex/latexpreamble', get_string('latexpreamble','filter_tex'),
  35                    '', "\\usepackage[latin1]{inputenc}\n\\usepackage{amsmath}\n\\usepackage{amsfonts}\n\\RequirePackage{amsmath,amssymb,latexsym}\n");
  36     $items[] = new admin_setting_configtext('filter_tex/latexbackground', get_string('backgroundcolour', 'admin'), '', '#FFFFFF');
  37     $items[] = new admin_setting_configtext('filter_tex/density', get_string('density', 'admin'), '', '120', PARAM_INT);
  38
  39     $default_filter_tex_pathlatex   = '';
  40     $default_filter_tex_pathdvips   = '';
  41     $default_filter_tex_pathdvisvgm = '';
  42     $default_filter_tex_pathconvert = '';
  43     if (PHP_OS=='Linux') {
  44         $default_filter_tex_pathlatex   = "/usr/bin/latex";
  45         $default_filter_tex_pathdvips   = "/usr/bin/dvips";
  46         $default_filter_tex_pathdvisvgm = "/usr/bin/dvisvgm";
  47         $default_filter_tex_pathconvert = "/usr/bin/convert";
  48     } else if (PHP_OS=='Darwin') {
  49         // most likely needs a fink install (fink.sf.net)
  50         $default_filter_tex_pathlatex   = "/sw/bin/latex";
  51         $default_filter_tex_pathdvips   = "/sw/bin/dvips";
  52         $default_filter_tex_pathdvisvgm = "/usr/bin/dvisvgm";
  53         $default_filter_tex_pathconvert = "/sw/bin/convert";
  54
  55     } else if (PHP_OS=='WINNT' or PHP_OS=='WIN32' or PHP_OS=='Windows') {
  56         // note: you need Ghostscript installed (standard), miktex (standard)
  57         // and ImageMagick (install at c:\ImageMagick)
  58         $default_filter_tex_pathlatex   = "c:\\texmf\\miktex\\bin\\latex.exe";
  59         $default_filter_tex_pathdvips   = "c:\\texmf\\miktex\\bin\\dvips.exe";
  60         $default_filter_tex_pathdvisvgm   = "c:\\texmf\\miktex\\bin\\dvisvgm.exe";
  61         $default_filter_tex_pathconvert = "c:\\imagemagick\\convert.exe";
  62     }
  63
  64     $pathlatex = get_config('filter_tex', 'pathlatex');
  65     $pathdvips = get_config('filter_tex', 'pathdvips');
  66     $pathconvert = get_config('filter_tex', 'pathconvert');
  67     $pathdvisvgm = get_config('filter_tex', 'pathdvisvgm');
  68     if (strrpos($pathlatex . $pathdvips . $pathconvert . $pathdvisvgm, '"') or
  69             strrpos($pathlatex . $pathdvips . $pathconvert . $pathdvisvgm, "'")) {
  70         set_config('pathlatex', trim($pathlatex, " '\""), 'filter_tex');
  71         set_config('pathdvips', trim($pathdvips, " '\""), 'filter_tex');
  72         set_config('pathconvert', trim($pathconvert, " '\""), 'filter_tex');
  73         set_config('pathdvisvgm', trim($pathdvisvgm, " '\""), 'filter_tex');
  74     }
  75
  76     $items[] = new admin_setting_configexecutable('filter_tex/pathlatex', get_string('pathlatex', 'filter_tex'), '', $default_filter_tex_pathlatex);
  77     $items[] = new admin_setting_configexecutable('filter_tex/pathdvips', get_string('pathdvips', 'filter_tex'), '', $default_filter_tex_pathdvips);
  78     $items[] = new admin_setting_configexecutable('filter_tex/pathconvert', get_string('pathconvert', 'filter_tex'), '', $default_filter_tex_pathconvert);
  79     $items[] = new admin_setting_configexecutable('filter_tex/pathdvisvgm', get_string('pathdvisvgm', 'filter_tex'), '', $default_filter_tex_pathdvisvgm);
  80     $items[] = new admin_setting_configexecutable('filter_tex/pathmimetex', get_string('pathmimetex', 'filter_tex'), get_string('pathmimetexdesc', 'filter_tex'), '');
  81
  82     // Even if we offer GIF, PNG and SVG formats here, in the update callback we check whether
  83     // required paths actually point to executables. If they don't, we force the setting
  84     // to GIF, as that's the only format mimeTeX can produce.
  85     $formats = array('gif' => 'GIF', 'png' => 'PNG', 'svg' => 'SVG');
  86     $items[] = new admin_setting_configselect('filter_tex/convertformat', get_string('convertformat', 'filter_tex'), get_string('configconvertformat', 'filter_tex'), 'gif', $formats);
  87
  88     foreach ($items as $item) {
  89         $item->set_updatedcallback('filter_tex_updatedcallback');
  90         $settings->add($item);
  91     }
  92 }