Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle 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 General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * TeX filter settings

 *

 * @package    filter

 * @subpackage tex

 * @copyright  2007 Petr Skoda {@link http://skodak.org}

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die;

if ($ADMIN->fulltree) {

    require_once($CFG->dirroot.'/filter/tex/lib.php');

    $items = array();

    $items[] = new admin_setting_heading('filter_tex/latexheading', get_string('latexsettings', 'filter_tex'), '');

    $items[] = new admin_setting_configtextarea('filter_tex/latexpreamble', get_string('latexpreamble','filter_tex'),

                   '', "\\usepackage[latin1]{inputenc}\n\\usepackage{amsmath}\n\\usepackage{amsfonts}\n\\RequirePackage{amsmath,amssymb,latexsym}\n");

    $items[] = new admin_setting_configtext('filter_tex/latexbackground', get_string('backgroundcolour', 'admin'), '', '#FFFFFF');

    $items[] = new admin_setting_configtext('filter_tex/density', get_string('density', 'admin'), '', '120', PARAM_INT);

    $default_filter_tex_pathlatex   = '';

    $default_filter_tex_pathdvips   = '';

    $default_filter_tex_pathdvisvgm = '';

    $default_filter_tex_pathconvert = '';

    if (PHP_OS=='Linux') {

        $default_filter_tex_pathlatex   = "/usr/bin/latex";

        $default_filter_tex_pathdvips   = "/usr/bin/dvips";

        $default_filter_tex_pathdvisvgm = "/usr/bin/dvisvgm";

        $default_filter_tex_pathconvert = "/usr/bin/convert";

    } else if (PHP_OS=='Darwin') {

        // most likely needs a fink install (fink.sf.net)

        $default_filter_tex_pathlatex   = "/sw/bin/latex";

        $default_filter_tex_pathdvips   = "/sw/bin/dvips";

        $default_filter_tex_pathdvisvgm = "/usr/bin/dvisvgm";

        $default_filter_tex_pathconvert = "/sw/bin/convert";

    } else if (PHP_OS=='WINNT' or PHP_OS=='WIN32' or PHP_OS=='Windows') {

        // note: you need Ghostscript installed (standard), miktex (standard)

        // and ImageMagick (install at c:\ImageMagick)

        $default_filter_tex_pathlatex   = "c:\\texmf\\miktex\\bin\\latex.exe";

        $default_filter_tex_pathdvips   = "c:\\texmf\\miktex\\bin\\dvips.exe";

        $default_filter_tex_pathdvisvgm   = "c:\\texmf\\miktex\\bin\\dvisvgm.exe";

        $default_filter_tex_pathconvert = "c:\\imagemagick\\convert.exe";

    }

    $pathlatex = get_config('filter_tex', 'pathlatex');

    $pathdvips = get_config('filter_tex', 'pathdvips');

    $pathconvert = get_config('filter_tex', 'pathconvert');

    $pathdvisvgm = get_config('filter_tex', 'pathdvisvgm');

    if (strrpos($pathlatex . $pathdvips . $pathconvert . $pathdvisvgm, '"') or

            strrpos($pathlatex . $pathdvips . $pathconvert . $pathdvisvgm, "'")) {

        set_config('pathlatex', trim($pathlatex, " '\""), 'filter_tex');

        set_config('pathdvips', trim($pathdvips, " '\""), 'filter_tex');

        set_config('pathconvert', trim($pathconvert, " '\""), 'filter_tex');

        set_config('pathdvisvgm', trim($pathdvisvgm, " '\""), 'filter_tex');

    }

    $items[] = new admin_setting_configexecutable('filter_tex/pathlatex', get_string('pathlatex', 'filter_tex'), '', $default_filter_tex_pathlatex);

    $items[] = new admin_setting_configexecutable('filter_tex/pathdvips', get_string('pathdvips', 'filter_tex'), '', $default_filter_tex_pathdvips);

    $items[] = new admin_setting_configexecutable('filter_tex/pathconvert', get_string('pathconvert', 'filter_tex'), '', $default_filter_tex_pathconvert);

    $items[] = new admin_setting_configexecutable('filter_tex/pathdvisvgm', get_string('pathdvisvgm', 'filter_tex'), '', $default_filter_tex_pathdvisvgm);

    $items[] = new admin_setting_configexecutable('filter_tex/pathmimetex', get_string('pathmimetex', 'filter_tex'), get_string('pathmimetexdesc', 'filter_tex'), '');

    // Even if we offer GIF, PNG and SVG formats here, in the update callback we check whether

    // required paths actually point to executables. If they don't, we force the setting

    // to GIF, as that's the only format mimeTeX can produce.

    $formats = array('gif' => 'GIF', 'png' => 'PNG', 'svg' => 'SVG');

    $items[] = new admin_setting_configselect('filter_tex/convertformat', get_string('convertformat', 'filter_tex'), get_string('configconvertformat', 'filter_tex'), 'gif', $formats);

    foreach ($items as $item) {

        $item->set_updatedcallback('filter_tex_updatedcallback');

        $settings->add($item);

    }

}