theme/classic/lib.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  * Classic theme callbacks.
  19  *
  20  * @package    theme_classic
  21  * @copyright  2018 Bas Brands
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 // This line protects the file from being accessed by a URL directly.
  26 defined('MOODLE_INTERNAL') || die();
  27
  28 /**
  29  * Returns the main SCSS content.
  30  *
  31  * @param theme_config $theme The theme config object.
  32  * @return string
  33  */
  34 function theme_classic_get_main_scss_content($theme) {
  35     global $CFG;
  36
  37     $scss = '';
  38     $filename = !empty($theme->settings->preset) ? $theme->settings->preset : null;
  39     $fs = get_file_storage();
  40
  41     $context = context_system::instance();
  42     $scss .= file_get_contents($CFG->dirroot . '/theme/classic/scss/classic/pre.scss');
  43     if ($filename && ($presetfile = $fs->get_file($context->id, 'theme_classic', 'preset', 0, '/', $filename))) {
  44         $scss .= $presetfile->get_content();
  45     } else {
  46         // Safety fallback - maybe new installs etc.
  47         $scss .= file_get_contents($CFG->dirroot . '/theme/classic/scss/preset/default.scss');
  48     }
  49     $scss .= file_get_contents($CFG->dirroot . '/theme/classic/scss/classic/post.scss');
  50
  51     return $scss;
  52 }
  53
  54 /**
  55  * Get SCSS to prepend.
  56  *
  57  * @param theme_config $theme The theme config object.
  58  * @return array
  59  */
  60 function theme_classic_get_pre_scss($theme) {
  61     $scss = '';
  62     $configurable = [
  63         // Config key => [variableName, ...].
  64         'brandcolor' => ['primary'],
  65     ];
  66
  67     // Prepend variables first.
  68     foreach ($configurable as $configkey => $targets) {
  69         $value = isset($theme->settings->{$configkey}) ? $theme->settings->{$configkey} : null;
  70         if (empty($value)) {
  71             continue;
  72         }
  73         array_map(function($target) use (&$scss, $value) {
  74             $scss .= '$' . $target . ': ' . $value . ";\n";
  75         }, (array) $targets);
  76     }
  77
  78     // Prepend pre-scss.
  79     if (!empty($theme->settings->scsspre)) {
  80         $scss .= $theme->settings->scsspre;
  81     }
  82
  83     return $scss;
  84 }
  85
  86 /**
  87  * Inject additional SCSS.
  88  *
  89  * @param theme_config $theme The theme config object.
  90  * @return string
  91  */
  92 function theme_classic_get_extra_scss($theme) {
  93     global $CFG;
  94     $content = '';
  95
  96     // Set the page background image.
  97     $imageurl = $theme->setting_file_url('backgroundimage', 'backgroundimage');
  98     if (!empty($imageurl)) {
  99         $content .= '$imageurl: "' . $imageurl . '";';
 100         $content .= file_get_contents($CFG->dirroot .
 101             '/theme/classic/scss/classic/body-background.scss');
 102     }
 103
 104     // Sets the login background image.
 105     $loginbackgroundimageurl = $theme->setting_file_url('loginbackgroundimage', 'loginbackgroundimage');
 106     if (!empty($loginbackgroundimageurl)) {
 107         $content .= 'body.pagelayout-login #page { ';
 108         $content .= "background-image: url('$loginbackgroundimageurl'); background-size: cover;";
 109         $content .= ' }';
 110     }
 111
 112     if (!empty($theme->settings->navbardark)) {
 113         $content .= file_get_contents($CFG->dirroot .
 114             '/theme/classic/scss/classic/navbar-dark.scss');
 115     } else {
 116         $content .= file_get_contents($CFG->dirroot .
 117             '/theme/classic/scss/classic/navbar-light.scss');
 118     }
 119     if (!empty($theme->settings->scss)) {
 120         $content .= $theme->settings->scss;
 121     }
 122     return $content;
 123 }
 124
 125 /**
 126  * Get compiled css.
 127  *
 128  * @return string compiled css
 129  */
 130 function theme_classic_get_precompiled_css() {
 131     global $CFG;
 132     return file_get_contents($CFG->dirroot . '/theme/classic/style/moodle.css');
 133 }
 134
 135 /**
 136  * Serves any files associated with the theme settings.
 137  *
 138  * @param stdClass $course
 139  * @param stdClass $cm
 140  * @param context $context
 141  * @param string $filearea
 142  * @param array $args
 143  * @param bool $forcedownload
 144  * @param array $options
 145  * @return bool
 146  */
 147 function theme_classic_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = array()) {
 148     if ($context->contextlevel == CONTEXT_SYSTEM && ($filearea === 'backgroundimage' || $filearea === 'loginbackgroundimage')) {
 149         $theme = theme_config::load('classic');
 150         // By default, theme files must be cache-able by both browsers and proxies.
 151         if (!array_key_exists('cacheability', $options)) {
 152             $options['cacheability'] = 'public';
 153         }
 154         return $theme->setting_file_serve($filearea, $args, $forcedownload, $options);
 155     } else {
 156         send_file_not_found();
 157     }
 158 }