<?php /** * Name: MathJax * Description: Addon for Friendika to include MathJax (LaTeX math syntax) * Version: 1.0 * Author: Tobias Diekershoff <https://f.diekershoff.de/profile/tobias> * License: 3-clause BSD license */ function mathjax_install() { register_hook('page_header', 'addon/mathjax/mathjax.php', 'mathjax_page_header'); register_hook('plugin_settings', 'addon/mathjax/mathjax.php', 'mathjax_settings'); register_hook('plugin_settings_post', 'addon/mathjax/mathjax.php', 'mathjax_settings_post'); logger('installed js_math plugin'); } function mathjax_uninstall() { unregister_hook('page_header', 'addon/mathjax/mathjax.php', 'mathjax_page_header'); unregister_hook('plugin_settings', 'addon/mathjax/mathjax.php', 'mathjax_settings'); unregister_hook('plugin_settings_post', 'addon/mathjax/mathjax.php', 'mathjax_settings_post'); } function mathjax_settings_post ($a, $post) { if (! local_user()) return; // don't check statusnet settings if statusnet submit button is not clicked if (!x($_POST,'mathjax-submit')) return; set_pconfig(local_user(),'mathjax','use',intval($_POST['mathjax_use'])); } function mathjax_settings (&$a, &$s) { if (! local_user()) return; $use = get_pconfig(local_user(),'mathjax','use'); $usetext = (($use) ? ' checked="checked" ' : ''); $s .= '<span id="settings_mathjax_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose(\'settings_mathjax_expanded\'); openClose(\'settings_mathjax_inflated\');">'; $s .= '<h3>MathJax '.t('Settings').'</h3>'; $s .= '</span>'; $s .= '<div id="settings_mathjax_expanded" class="settings-block" style="display: none;">'; $s .= '<span class="fakelink" onclick="openClose(\'settings_mathjax_expanded\'); openClose(\'settings_mathjax_inflated\');">'; $s .= '<h3>MathJax '.t('Settings').'</h3>'; $s .= '</span>'; $s .= '<p>'.t('The MathJax addon renders mathematical formulae written using the LaTeX syntax surrounded by the usual $$ or an eqnarray block in the postings of your wall,network tab and private mail.').'</p>'; $s .= '<label id="mathjax_label" for="mathjax_use">'.t('Use the MathJax renderer').'</label>'; $s .= '<input id="mathjax_use" type="checkbox" name="mathjax_use" value="1"'. $usetext .' />'; $s .= '<div class="clear"></div>'; $s .= '<div class="settings-submit-wrapper" ><input type="submit" id="mathjax-submit" name="mathjax-submit" class="settings-submit" value="' . t('Save Settings') . '" /></div>'; $s .= '</div>'; } /* we need to add one JavaScript include command to the html output * note that you have to check the jsmath/easy/load.js too. */ function mathjax_page_header($a, &$b) { // if the visitor of the page is not a local_user, use MathJax // otherwise check the users settings. $url = get_config ('mathjax','baseurl'); if(! $url) $url = 'http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML'; if (! local_user()) { $b .= '<script type="text/javascript" src="'.$url.'"></script>'; } else { $use = get_pconfig(local_user(),'mathjax','use'); if ($use) { $b .= '<script type="text/javascript" src="'.$url.'"></script>'; } } } function mathjax_plugin_admin_post (&$a) { $baseurl = ((x($_POST, 'baseurl')) ? trim($_POST['baseurl']) : 'http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML'); set_config('mathjax','baseurl',$baseurl); info( t('Settings updated.'). EOL); } function mathjax_plugin_admin (&$a, &$o) { $t = get_markup_template( "admin.tpl", "addon/mathjax/" ); if (get_config('mathjax','baseurl','') == '') { set_config('mathjax','baseurl','http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML'); } $o = replace_macros( $t, array( '$submit' => t('Save Settings'), '$baseurl' => array('baseurl', t('MathJax Base URL'), get_config('mathjax','baseurl' ), t('The URL for the javascript file that should be included to use MathJax. Can be either the MathJax CDN or another installation of MathJax.')), )); }