Damyon Wiese
130 lines
3.8 KiB
PHP
130 lines
3.8 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Theme functions.
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*
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* @package theme_boost
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* @copyright 2016 Frédéric Massart - FMCorz.net
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Post process the CSS tree.
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*
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* @param string $tree The CSS tree.
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* @param theme_config $theme The theme config object.
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*/
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function theme_boost_css_tree_post_processor($tree, $this) {
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$prefixer = new theme_boost\autoprefixer($tree);
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$prefixer->prefix();
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}
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/**
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* Get the SCSS file to include.
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*
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* @param theme_config $theme The theme config object.
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* @return string The name of the file without 'scss'.
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*/
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function theme_boost_get_scss_file($theme) {
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$preset = !empty($theme->settings->preset) ? $theme->settings->preset : 'default';
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return 'preset-' . $preset;
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}
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/**
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* Inject additional SCSS.
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*
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* @param theme_config $theme The theme config object.
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* @return string
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*/
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function theme_boost_get_extra_scss($theme) {
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return !empty($theme->settings->scss) ? $theme->settings->scss : '';
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}
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/**
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* Get additional SCSS variables.
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*
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* @param theme_config $theme The theme config object.
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* @return array
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*/
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function theme_boost_get_scss_variables($theme) {
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$variables = [];
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$configurable = [
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// Config key => [variableName, ...].
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'brandcolor' => ['brand-primary'],
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];
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foreach ($configurable as $configkey => $targets) {
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$value = $theme->settings->{$configkey};
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if (empty($value)) {
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continue;
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}
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array_map(function($target) use (&$variables, $value) {
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$variables[$target] = $value;
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}, (array) $targets);
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}
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if (!empty($theme->settings->scss_variables)) {
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$variables = array_merge($variables, theme_boost_parse_scss_variables($theme->settings->scss_variables));
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}
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return $variables;
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}
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/**
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* Parse a string into SCSS variables.
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*
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* - One variable definition per line,
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* - The variable name is separated from the value by a colon,
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* - The dollar sign is optional,
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* - The trailing semi-colon is optional,
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* - CSS comments (starting with //) are accepted
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* - Variables names can only contain letters, numbers, hyphens and underscores.
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*
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* @param string $data The string to parse from.
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* @param bool $lenient When non lenient, an exception will be thrown when a line cannot be parsed.
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* @return array
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*/
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function theme_boost_parse_scss_variables($data, $lenient = true) {
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$variables = [];
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$lines = explode("\n", $data);
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$i = 0;
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foreach ($lines as $line) {
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$i++;
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if (preg_match('@^\s*//@', $line)) {
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continue;
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}
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$parts = explode(':', trim($line));
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$variable = ltrim($parts[0], '$ ');
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$value = rtrim(ltrim(isset($parts[1]) ? $parts[1] : ''), "; ");
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if (empty($variable) || !preg_match('/^[a-z0-9_-]+$/i', $variable) || (empty($value) && !is_numeric($value))) {
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if ($lenient) {
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continue;
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}
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throw new moodle_exception('errorparsingscssvariables', 'theme_boost', null, $i);
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}
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$variables[$variable] = $value;
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}
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return $variables;
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}
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