theme/boost/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  * Theme functions.
  19  *
  20  * @package    theme_boost
  21  * @copyright  2016 Frédéric Massart - FMCorz.net
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 defined('MOODLE_INTERNAL') || die();
  26
  27 /**
  28  * Post process the CSS tree.
  29  *
  30  * @param string $tree The CSS tree.
  31  * @param theme_config $theme The theme config object.
  32  */
  33 function theme_boost_css_tree_post_processor($tree, $theme) {
  34     $prefixer = new theme_boost\autoprefixer($tree);
  35     $prefixer->prefix();
  36 }
  37
  38 /**
  39  * Inject additional SCSS.
  40  *
  41  * @param theme_config $theme The theme config object.
  42  * @return string
  43  */
  44 function theme_boost_get_extra_scss($theme) {
  45     return !empty($theme->settings->scss) ? $theme->settings->scss : '';
  46 }
  47
  48 /**
  49  * Returns the main SCSS content.
  50  *
  51  * @param theme_config $theme The theme config object.
  52  * @return string
  53  */
  54 function theme_boost_get_main_scss_content($theme) {
  55     global $CFG;
  56
  57     $scss = '';
  58     $filename = !empty($theme->settings->preset) ? $theme->settings->preset : null;
  59     $fs = get_file_storage();
  60
  61     $context = context_system::instance();
  62     if ($filename == 'default.scss') {
  63         $scss .= file_get_contents($CFG->dirroot . '/theme/boost/scss/preset/default.scss');
  64     } else if ($filename == 'plain.scss') {
  65         $scss .= file_get_contents($CFG->dirroot . '/theme/boost/scss/preset/plain.scss');
  66     } else if ($filename && ($presetfile = $fs->get_file($context->id, 'theme_boost', 'preset', 0, '/', $filename))) {
  67         $scss .= $presetfile->get_content();
  68     } else {
  69         // Safety fallback - maybe new installs etc.
  70         $scss .= file_get_contents($CFG->dirroot . '/theme/boost/scss/preset/default.scss');
  71     }
  72
  73     return $scss;
  74 }
  75
  76 /**
  77  * Get SCSS to prepend.
  78  *
  79  * @param theme_config $theme The theme config object.
  80  * @return array
  81  */
  82 function theme_boost_get_pre_scss($theme) {
  83     global $CFG;
  84
  85     $scss = '';
  86     $configurable = [
  87         // Config key => [variableName, ...].
  88         'brandcolor' => ['brand-primary'],
  89     ];
  90
  91     // Prepend variables first.
  92     foreach ($configurable as $configkey => $targets) {
  93         $value = isset($theme->settings->{$configkey}) ? $theme->settings->{$configkey} : null;
  94         if (empty($value)) {
  95             continue;
  96         }
  97         array_map(function($target) use (&$scss, $value) {
  98             $scss .= '$' . $target . ': ' . $value . ";\n";
  99         }, (array) $targets);
 100     }
 101
 102     // Prepend pre-scss.
 103     if (!empty($theme->settings->scsspre)) {
 104         $scss .= $theme->settings->scsspre;
 105     }
 106
 107     return $scss;
 108 }