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Edit File: functions.php
<?php /** * Twenty Sixteen functions and definitions * * Set up the theme and provides some helper functions, which are used in the * theme as custom template tags. Others are attached to action and filter * hooks in WordPress to change core functionality. * * When using a child theme you can override certain functions (those wrapped * in a function_exists() call) by defining them first in your child theme's * functions.php file. The child theme's functions.php file is included before * the parent theme's file, so the child theme functions would be used. * * @link https://developer.wordpress.org/themes/basics/theme-functions/ * @link https://developer.wordpress.org/themes/advanced-topics/child-themes/ * * Functions that are not pluggable (not wrapped in function_exists()) are * instead attached to a filter or action hook. * * For more information on hooks, actions, and filters, * {@link https://developer.wordpress.org/plugins/} * * @package WordPress * @subpackage Twenty_Sixteen * @since Twenty Sixteen 1.0 */ /** * Twenty Sixteen only works in WordPress 4.4 or later. */ if ( version_compare( $GLOBALS['wp_version'], '4.4-alpha', '<' ) ) { require get_template_directory() . '/inc/back-compat.php'; } if ( ! function_exists( 'twentysixteen_setup' ) ) : /** * Sets up theme defaults and registers support for various WordPress features. * * Note that this function is hooked into the after_setup_theme hook, which * runs before the init hook. The init hook is too late for some features, such * as indicating support for post thumbnails. * * Create your own twentysixteen_setup() function to override in a child theme. * * @since Twenty Sixteen 1.0 */ function twentysixteen_setup() { /* * Make theme available for translation. * Translations can be filed at WordPress.org. See: https://translate.wordpress.org/projects/wp-themes/twentysixteen * If you're building a theme based on Twenty Sixteen, use a find and replace * to change 'twentysixteen' to the name of your theme in all the template files */ load_theme_textdomain( 'twentysixteen' ); // Add default posts and comments RSS feed links to head. add_theme_support( 'automatic-feed-links' ); /* * Let WordPress manage the document title. * By adding theme support, we declare that this theme does not use a * hard-coded <title> tag in the document head, and expect WordPress to * provide it for us. */ add_theme_support( 'title-tag' ); /* * Enable support for custom logo. * * @since Twenty Sixteen 1.2 */ add_theme_support( 'custom-logo', array( 'height' => 240, 'width' => 240, 'flex-height' => true, ) ); /* * Enable support for Post Thumbnails on posts and pages. * * @link https://developer.wordpress.org/reference/functions/add_theme_support/#post-thumbnails */ add_theme_support( 'post-thumbnails' ); set_post_thumbnail_size( 1200, 9999 ); // This theme uses wp_nav_menu() in two locations. register_nav_menus( array( 'primary' => __( 'Primary Menu', 'twentysixteen' ), 'social' => __( 'Social Links Menu', 'twentysixteen' ), ) ); /* * Switch default core markup for search form, comment form, and comments * to output valid HTML5. */ add_theme_support( 'html5', array( 'search-form', 'comment-form', 'comment-list', 'gallery', 'caption', 'script', 'style', ) ); /* * Enable support for Post Formats. * * See: https://wordpress.org/support/article/post-formats/ */ add_theme_support( 'post-formats', array( 'aside', 'image', 'video', 'quote', 'link', 'gallery', 'status', 'audio', 'chat', ) ); /* * This theme styles the visual editor to resemble the theme style, * specifically font, colors, icons, and column width. */ add_editor_style( array( 'css/editor-style.css', twentysixteen_fonts_url() ) ); // Load regular editor styles into the new block-based editor. add_theme_support( 'editor-styles' ); // Load default block styles. add_theme_support( 'wp-block-styles' ); // Add support for responsive embeds. add_theme_support( 'responsive-embeds' ); // Add support for custom color scheme. add_theme_support( 'editor-color-palette', array( array( 'name' => __( 'Dark Gray', 'twentysixteen' ), 'slug' => 'dark-gray', 'color' => '#1a1a1a', ), array( 'name' => __( 'Medium Gray', 'twentysixteen' ), 'slug' => 'medium-gray', 'color' => '#686868', ), array( 'name' => __( 'Light Gray', 'twentysixteen' ), 'slug' => 'light-gray', 'color' => '#e5e5e5', ), array( 'name' => __( 'White', 'twentysixteen' ), 'slug' => 'white', 'color' => '#fff', ), array( 'name' => __( 'Blue Gray', 'twentysixteen' ), 'slug' => 'blue-gray', 'color' => '#4d545c', ), array( 'name' => __( 'Bright Blue', 'twentysixteen' ), 'slug' => 'bright-blue', 'color' => '#007acc', ), array( 'name' => __( 'Light Blue', 'twentysixteen' ), 'slug' => 'light-blue', 'color' => '#9adffd', ), array( 'name' => __( 'Dark Brown', 'twentysixteen' ), 'slug' => 'dark-brown', 'color' => '#402b30', ), array( 'name' => __( 'Medium Brown', 'twentysixteen' ), 'slug' => 'medium-brown', 'color' => '#774e24', ), array( 'name' => __( 'Dark Red', 'twentysixteen' ), 'slug' => 'dark-red', 'color' => '#640c1f', ), array( 'name' => __( 'Bright Red', 'twentysixteen' ), 'slug' => 'bright-red', 'color' => '#ff675f', ), array( 'name' => __( 'Yellow', 'twentysixteen' ), 'slug' => 'yellow', 'color' => '#ffef8e', ), ) ); // Indicate widget sidebars can use selective refresh in the Customizer. add_theme_support( 'customize-selective-refresh-widgets' ); } endif; // twentysixteen_setup() add_action( 'after_setup_theme', 'twentysixteen_setup' ); /** * Sets the content width in pixels, based on the theme's design and stylesheet. * * Priority 0 to make it available to lower priority callbacks. * * @global int $content_width * * @since Twenty Sixteen 1.0 */ function twentysixteen_content_width() { $GLOBALS['content_width'] = apply_filters( 'twentysixteen_content_width', 840 ); } add_action( 'after_setup_theme', 'twentysixteen_content_width', 0 ); /** * Add preconnect for Google Fonts. * * @since Twenty Sixteen 1.6 * * @param array $urls URLs to print for resource hints. * @param string $relation_type The relation type the URLs are printed. * @return array $urls URLs to print for resource hints. */ function twentysixteen_resource_hints( $urls, $relation_type ) { if ( wp_style_is( 'twentysixteen-fonts', 'queue' ) && 'preconnect' === $relation_type ) { $urls[] = array( 'href' => 'https://fonts.gstatic.com', 'crossorigin', ); } return $urls; } add_filter( 'wp_resource_hints', 'twentysixteen_resource_hints', 10, 2 ); /** * Registers a widget area. * * @link https://developer.wordpress.org/reference/functions/register_sidebar/ * * @since Twenty Sixteen 1.0 */ function twentysixteen_widgets_init() { register_sidebar( array( 'name' => __( 'Sidebar', 'twentysixteen' ), 'id' => 'sidebar-1', 'description' => __( 'Add widgets here to appear in your sidebar.', 'twentysixteen' ), 'before_widget' => '<section id="%1$s" class="widget %2$s">', 'after_widget' => '</section>', 'before_title' => '<h2 class="widget-title">', 'after_title' => '</h2>', ) ); register_sidebar( array( 'name' => __( 'Content Bottom 1', 'twentysixteen' ), 'id' => 'sidebar-2', 'description' => __( 'Appears at the bottom of the content on posts and pages.', 'twentysixteen' ), 'before_widget' => '<section id="%1$s" class="widget %2$s">', 'after_widget' => '</section>', 'before_title' => '<h2 class="widget-title">', 'after_title' => '</h2>', ) ); register_sidebar( array( 'name' => __( 'Content Bottom 2', 'twentysixteen' ), 'id' => 'sidebar-3', 'description' => __( 'Appears at the bottom of the content on posts and pages.', 'twentysixteen' ), 'before_widget' => '<section id="%1$s" class="widget %2$s">', 'after_widget' => '</section>', 'before_title' => '<h2 class="widget-title">', 'after_title' => '</h2>', ) ); } add_action( 'widgets_init', 'twentysixteen_widgets_init' ); if ( ! function_exists( 'twentysixteen_fonts_url' ) ) : /** * Register Google fonts for Twenty Sixteen. * * Create your own twentysixteen_fonts_url() function to override in a child theme. * * @since Twenty Sixteen 1.0 * * @return string Google fonts URL for the theme. */ function twentysixteen_fonts_url() { $fonts_url = ''; $fonts = array(); $subsets = 'latin,latin-ext'; /* * translators: If there are characters in your language that are not supported * by Merriweather, translate this to 'off'. Do not translate into your own language. */ if ( 'off' !== _x( 'on', 'Merriweather font: on or off', 'twentysixteen' ) ) { $fonts[] = 'Merriweather:400,700,900,400italic,700italic,900italic'; } /* * translators: If there are characters in your language that are not supported * by Montserrat, translate this to 'off'. Do not translate into your own language. */ if ( 'off' !== _x( 'on', 'Montserrat font: on or off', 'twentysixteen' ) ) { $fonts[] = 'Montserrat:400,700'; } /* * translators: If there are characters in your language that are not supported * by Inconsolata, translate this to 'off'. Do not translate into your own language. */ if ( 'off' !== _x( 'on', 'Inconsolata font: on or off', 'twentysixteen' ) ) { $fonts[] = 'Inconsolata:400'; } if ( $fonts ) { $fonts_url = add_query_arg( array( 'family' => urlencode( implode( '|', $fonts ) ), 'subset' => urlencode( $subsets ), 'display' => urlencode( 'fallback' ), ), 'https://fonts.googleapis.com/css' ); } return $fonts_url; } endif; /** * Handles JavaScript detection. * * Adds a `js` class to the root `<html>` element when JavaScript is detected. * * @since Twenty Sixteen 1.0 */ function twentysixteen_javascript_detection() { echo "<script>(function(html){html.className = html.className.replace(/\bno-js\b/,'js')})(document.documentElement);</script>\n"; } add_action( 'wp_head', 'twentysixteen_javascript_detection', 0 ); /** * Enqueues scripts and styles. * * @since Twenty Sixteen 1.0 */ function twentysixteen_scripts() { // Add custom fonts, used in the main stylesheet. wp_enqueue_style( 'twentysixteen-fonts', twentysixteen_fonts_url(), array(), null ); // Add Genericons, used in the main stylesheet. wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.4.1' ); // Theme stylesheet. wp_enqueue_style( 'twentysixteen-style', get_stylesheet_uri(), array(), '20190507' ); // Theme block stylesheet. wp_enqueue_style( 'twentysixteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentysixteen-style' ), '20190102' ); // Load the Internet Explorer specific stylesheet. wp_enqueue_style( 'twentysixteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentysixteen-style' ), '20170530' ); wp_style_add_data( 'twentysixteen-ie', 'conditional', 'lt IE 10' ); // Load the Internet Explorer 8 specific stylesheet. wp_enqueue_style( 'twentysixteen-ie8', get_template_directory_uri() . '/css/ie8.css', array( 'twentysixteen-style' ), '20170530' ); wp_style_add_data( 'twentysixteen-ie8', 'conditional', 'lt IE 9' ); // Load the Internet Explorer 7 specific stylesheet. wp_enqueue_style( 'twentysixteen-ie7', get_template_directory_uri() . '/css/ie7.css', array( 'twentysixteen-style' ), '20170530' ); wp_style_add_data( 'twentysixteen-ie7', 'conditional', 'lt IE 8' ); // Load the html5 shiv. wp_enqueue_script( 'twentysixteen-html5', get_template_directory_uri() . '/js/html5.js', array(), '3.7.3' ); wp_script_add_data( 'twentysixteen-html5', 'conditional', 'lt IE 9' ); wp_enqueue_script( 'twentysixteen-skip-link-focus-fix', get_template_directory_uri() . '/js/skip-link-focus-fix.js', array(), '20170530', true ); if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) { wp_enqueue_script( 'comment-reply' ); } if ( is_singular() && wp_attachment_is_image() ) { wp_enqueue_script( 'twentysixteen-keyboard-image-navigation', get_template_directory_uri() . '/js/keyboard-image-navigation.js', array( 'jquery' ), '20170530' ); } wp_enqueue_script( 'twentysixteen-script', get_template_directory_uri() . '/js/functions.js', array( 'jquery' ), '20181217', true ); wp_localize_script( 'twentysixteen-script', 'screenReaderText', array( 'expand' => __( 'expand child menu', 'twentysixteen' ), 'collapse' => __( 'collapse child menu', 'twentysixteen' ), ) ); } add_action( 'wp_enqueue_scripts', 'twentysixteen_scripts' ); /** * Enqueue styles for the block-based editor. * * @since Twenty Sixteen 1.6 */ function twentysixteen_block_editor_styles() { // Block styles. wp_enqueue_style( 'twentysixteen-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), '20190102' ); // Add custom fonts. wp_enqueue_style( 'twentysixteen-fonts', twentysixteen_fonts_url(), array(), null ); } add_action( 'enqueue_block_editor_assets', 'twentysixteen_block_editor_styles' ); /** * Adds custom classes to the array of body classes. * * @since Twenty Sixteen 1.0 * * @param array $classes Classes for the body element. * @return array (Maybe) filtered body classes. */ function twentysixteen_body_classes( $classes ) { // Adds a class of custom-background-image to sites with a custom background image. if ( get_background_image() ) { $classes[] = 'custom-background-image'; } // Adds a class of group-blog to sites with more than 1 published author. if ( is_multi_author() ) { $classes[] = 'group-blog'; } // Adds a class of no-sidebar to sites without active sidebar. if ( ! is_active_sidebar( 'sidebar-1' ) ) { $classes[] = 'no-sidebar'; } // Adds a class of hfeed to non-singular pages. if ( ! is_singular() ) { $classes[] = 'hfeed'; } return $classes; } add_filter( 'body_class', 'twentysixteen_body_classes' ); /** * Converts a HEX value to RGB. * * @since Twenty Sixteen 1.0 * * @param string $color The original color, in 3- or 6-digit hexadecimal form. * @return array Array containing RGB (red, green, and blue) values for the given * HEX code, empty array otherwise. */ function twentysixteen_hex2rgb( $color ) { $color = trim( $color, '#' ); if ( strlen( $color ) === 3 ) { $r = hexdec( substr( $color, 0, 1 ) . substr( $color, 0, 1 ) ); $g = hexdec( substr( $color, 1, 1 ) . substr( $color, 1, 1 ) ); $b = hexdec( substr( $color, 2, 1 ) . substr( $color, 2, 1 ) ); } elseif ( strlen( $color ) === 6 ) { $r = hexdec( substr( $color, 0, 2 ) ); $g = hexdec( substr( $color, 2, 2 ) ); $b = hexdec( substr( $color, 4, 2 ) ); } else { return array(); } return array( 'red' => $r, 'green' => $g, 'blue' => $b, ); } /** * Custom template tags for this theme. */ require get_template_directory() . '/inc/template-tags.php'; /** * Customizer additions. */ require get_template_directory() . '/inc/customizer.php'; /** * Add custom image sizes attribute to enhance responsive image functionality * for content images * * @since Twenty Sixteen 1.0 * * @param string $sizes A source size value for use in a 'sizes' attribute. * @param array $size Image size. Accepts an array of width and height * values in pixels (in that order). * @return string A source size value for use in a content image 'sizes' attribute. */ function twentysixteen_content_image_sizes_attr( $sizes, $size ) { $width = $size[0]; if ( 840 <= $width ) { $sizes = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px'; } if ( 'page' === get_post_type() ) { if ( 840 > $width ) { $sizes = '(max-width: ' . $width . 'px) 85vw, ' . $width . 'px'; } } else { if ( 840 > $width && 600 <= $width ) { $sizes = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px'; } elseif ( 600 > $width ) { $sizes = '(max-width: ' . $width . 'px) 85vw, ' . $width . 'px'; } } return $sizes; } add_filter( 'wp_calculate_image_sizes', 'twentysixteen_content_image_sizes_attr', 10, 2 ); /** * Add custom image sizes attribute to enhance responsive image functionality * for post thumbnails * * @since Twenty Sixteen 1.0 * * @param array $attr Attributes for the image markup. * @param int $attachment Image attachment ID. * @param array $size Registered image size or flat array of height and width dimensions. * @return array The filtered attributes for the image markup. */ function twentysixteen_post_thumbnail_sizes_attr( $attr, $attachment, $size ) { if ( 'post-thumbnail' === $size ) { if ( is_active_sidebar( 'sidebar-1' ) ) { $attr['sizes'] = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 60vw, (max-width: 1362px) 62vw, 840px'; } else { $attr['sizes'] = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 88vw, 1200px'; } } return $attr; } add_filter( 'wp_get_attachment_image_attributes', 'twentysixteen_post_thumbnail_sizes_attr', 10, 3 ); /** * Modifies tag cloud widget arguments to display all tags in the same font size * and use list format for better accessibility. * * @since Twenty Sixteen 1.1 * * @param array $args Arguments for tag cloud widget. * @return array The filtered arguments for tag cloud widget. */ function twentysixteen_widget_tag_cloud_args( $args ) { $args['largest'] = 1; $args['smallest'] = 1; $args['unit'] = 'em'; $args['format'] = 'list'; return $args; } add_filter( 'widget_tag_cloud_args', 'twentysixteen_widget_tag_cloud_args' );
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