lib.php

<?php

/**
 * @package		theme_aardvark
 * @author		Shaun Daubney
 * @license		http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

/**
 * Parses CSS before it is cached.
 *
 * This function can make alterations and replace patterns within the CSS.
 *
 * @param string $css The CSS
 * @param theme_config $theme The theme config object.
 * @return string The parsed CSS The parsed CSS.
 */
function theme_aardvark_process_css($css, $theme) {
    global $OUTPUT;

    // Set the background image for the logo.
    $logo = $OUTPUT->get_logo_url(null, 75);
    $css = theme_aardvark_set_logo($css, $logo);
	
	// Set the main colour.
    $maincolor = $theme->settings->maincolor;
    $css = theme_aardvark_set_maincolor($css, $maincolor);

    // Set custom CSS.
    if (!empty($theme->settings->customcss)) {
        $customcss = $theme->settings->customcss;
    } else {
        $customcss = null;
    }
    $css = theme_aardvark_set_customcss($css, $customcss);

    return $css;
}

/**
 * Adds the logo to CSS.
 *
 * @param string $css The CSS.
 * @param string $logo The URL of the logo.
 * @return string The parsed CSS
 */
function theme_aardvark_set_logo($css, $logo) {
    $tag = '[[setting:logo]]';
    $replacement = $logo;
    if (is_null($replacement)) {
        $replacement = '';
    }

    $css = str_replace($tag, $replacement, $css);

    return $css;
}

/**
 * Adds the main colour to CSS.
 *
 * @param string $css The CSS.
 * @param string $maincolor The URL of the logo.
 * @return string The parsed CSS
 */

function theme_aardvark_set_maincolor($css, $maincolor) {
    $tag = '[[setting:maincolor]]';
    $replacement = $maincolor;
    if (is_null($replacement)) {
        $replacement = '#f98012';
    }
    $css = str_replace($tag, $replacement, $css);

    return $css;
}

/**
 * Serves any files associated with the theme settings.
 *
 * @param stdClass $course
 * @param stdClass $cm
 * @param context $context
 * @param string $filearea
 * @param array $args
 * @param bool $forcedownload
 * @param array $options
 * @return bool
 */
function theme_aardvark_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = array()) {
    if ($context->contextlevel == CONTEXT_SYSTEM and ($filearea === 'logo' || $filearea === 'smalllogo')) {
        $theme = theme_config::load('aardvark');
        // By default, theme files must be cache-able by both browsers and proxies.
        if (!array_key_exists('cacheability', $options)) {
            $options['cacheability'] = 'public';
        }
        return $theme->setting_file_serve($filearea, $args, $forcedownload, $options);
    } else {
        send_file_not_found();
    }
}

/**
 * Adds any custom CSS to the CSS before it is cached.
 *
 * @param string $css The original CSS.
 * @param string $customcss The custom CSS to add.
 * @return string The CSS which now contains our custom CSS.
 */
function theme_aardvark_set_customcss($css, $customcss) {
    $tag = '[[setting:customcss]]';
    $replacement = $customcss;
    if (is_null($replacement)) {
        $replacement = '';
    }

    $css = str_replace($tag, $replacement, $css);

    return $css;
}

/**
 * Returns an object containing HTML for the areas affected by settings.
 *
 * Do not add aardvark specific logic in here, child themes should be able to
 * rely on that function just by declaring settings with similar names.
 *
 * @param renderer_base $output Pass in $OUTPUT.
 * @param moodle_page $page Pass in $PAGE.
 * @return stdClass An object with the following properties:
 *      - navbarclass A CSS class to use on the navbar. By default ''.
 *      - heading HTML to use for the heading. A logo if one is selected or the default heading.
 */
function theme_aardvark_get_html_for_settings(renderer_base $output, moodle_page $page) {
    global $CFG;
    $return = new stdClass;

    $return->navbarclass = '';
	
    $return->heading = $output->page_heading();

    return $return;
}