410 lines
13 KiB
PHP
410 lines
13 KiB
PHP
<?php
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/**
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* Twenty Seventeen functions and definitions
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*
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* @link https://developer.wordpress.org/themes/basics/theme-functions/
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*
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* @package WordPress
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* @subpackage Twenty_Seventeen
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* @since 1.0
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*/
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/**
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* Twenty Seventeen only works in WordPress 4.7 or later.
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*/
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if ( version_compare( $GLOBALS['wp_version'], '4.7-alpha', '<' ) ) {
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require get_template_directory() . '/inc/back-compat.php';
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return;
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}
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/**
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* Sets up theme defaults and registers support for various WordPress features.
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*
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* Note that this function is hooked into the after_setup_theme hook, which
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* runs before the init hook. The init hook is too late for some features, such
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* as indicating support for post thumbnails.
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*/
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function twentyseventeen_setup() {
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/*
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* Make theme available for translation.
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* Translations can be filed at WordPress.org. See: https://translate.wordpress.org/projects/wp-themes/twentyseventeen
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* If you're building a theme based on Twenty Seventeen, use a find and replace
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* to change 'twentyseventeen' to the name of your theme in all the template files.
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*/
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load_theme_textdomain( 'twentyseventeen' );
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// Add default posts and comments RSS feed links to head.
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add_theme_support( 'automatic-feed-links' );
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/*
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* Let WordPress manage the document title.
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* By adding theme support, we declare that this theme does not use a
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* hard-coded <title> tag in the document head, and expect WordPress to
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* provide it for us.
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*/
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add_theme_support( 'title-tag' );
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/*
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* Enable support for Post Thumbnails on posts and pages.
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*
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* @link https://developer.wordpress.org/themes/functionality/featured-images-post-thumbnails/
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*/
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add_theme_support( 'post-thumbnails' );
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add_image_size( 'twentyseventeen-featured-image', 2000, 1200, true );
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add_image_size( 'twentyseventeen-thumbnail-avatar', 100, 100, true );
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// This theme uses wp_nav_menu() in two locations.
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register_nav_menus( array(
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'top' => __( 'Top', 'twentyseventeen' ),
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'social' => __( 'Social Links Menu', 'twentyseventeen' ),
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) );
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/*
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* Switch default core markup for search form, comment form, and comments
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* to output valid HTML5.
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*/
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add_theme_support( 'html5', array(
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'comment-form',
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'comment-list',
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'gallery',
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'caption',
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) );
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/*
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* Enable support for Post Formats.
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*
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* See: https://codex.wordpress.org/Post_Formats
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*/
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add_theme_support( 'post-formats', array(
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'aside',
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'image',
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'video',
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'quote',
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'link',
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'gallery',
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'audio',
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) );
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// Add theme support for Custom Logo.
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add_theme_support( 'custom-logo', array(
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'width' => 250,
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'height' => 250,
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'flex-width' => true,
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) );
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/*
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* This theme styles the visual editor to resemble the theme style,
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* specifically font, colors, and column width.
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*/
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add_editor_style( array( 'assets/css/editor-style.css', twentyseventeen_fonts_url() ) );
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}
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add_action( 'after_setup_theme', 'twentyseventeen_setup' );
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/**
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* Set the content width in pixels, based on the theme's design and stylesheet.
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*
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* Priority 0 to make it available to lower priority callbacks.
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*
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* @global int $content_width
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*/
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function twentyseventeen_content_width() {
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$content_width = 700;
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if ( twentyseventeen_is_frontpage() ) {
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$content_width = 1120;
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}
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$GLOBALS['content_width'] = apply_filters( 'twentyseventeen_content_width', $content_width );
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}
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add_action( 'after_setup_theme', 'twentyseventeen_content_width', 0 );
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/**
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* Register custom fonts.
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*/
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function twentyseventeen_fonts_url() {
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$fonts_url = '';
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/**
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* Translators: If there are characters in your language that are not
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* supported by Libre Frankin, translate this to 'off'. Do not translate
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* into your own language.
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*/
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$libre_franklin = _x( 'on', 'libre_franklin font: on or off', 'twentyseventeen' );
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if ( 'off' !== $libre_franklin ) {
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$font_families = array();
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$font_families[] = 'Libre Franklin:300,300i,400,400i,600,600i,800,800i';
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$query_args = array(
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'family' => urlencode( implode( '|', $font_families ) ),
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'subset' => urlencode( 'latin,latin-ext' ),
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);
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$fonts_url = add_query_arg( $query_args, 'https://fonts.googleapis.com/css' );
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}
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return esc_url_raw( $fonts_url );
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}
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/**
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* Add preconnect for Google Fonts.
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*
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* @since Twenty Seventeen 1.0
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*
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* @param array $urls URLs to print for resource hints.
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* @param string $relation_type The relation type the URLs are printed.
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* @return array $urls URLs to print for resource hints.
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*/
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function twentyseventeen_resource_hints( $urls, $relation_type ) {
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if ( wp_style_is( 'twentyseventeen-fonts', 'queue' ) && 'preconnect' === $relation_type ) {
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$urls[] = array(
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'href' => 'https://fonts.gstatic.com',
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'crossorigin',
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);
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}
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return $urls;
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}
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add_filter( 'wp_resource_hints', 'twentyseventeen_resource_hints', 10, 2 );
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/**
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* Register widget area.
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*
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* @link https://developer.wordpress.org/themes/functionality/sidebars/#registering-a-sidebar
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*/
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function twentyseventeen_widgets_init() {
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register_sidebar( array(
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'name' => __( 'Sidebar', 'twentyseventeen' ),
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'id' => 'sidebar-1',
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'description' => __( 'Add widgets here to appear in your sidebar.', 'twentyseventeen' ),
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'before_widget' => '<section id="%1$s" class="widget %2$s">',
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'after_widget' => '</section>',
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'before_title' => '<h2 class="widget-title">',
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'after_title' => '</h2>',
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) );
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register_sidebar( array(
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'name' => __( 'Footer 1', 'twentyseventeen' ),
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'id' => 'sidebar-2',
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'description' => __( 'Add widgets here to appear in your footer.', 'twentyseventeen' ),
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'before_widget' => '<section id="%1$s" class="widget %2$s">',
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'after_widget' => '</section>',
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'before_title' => '<h2 class="widget-title">',
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'after_title' => '</h2>',
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) );
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register_sidebar( array(
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'name' => __( 'Footer 2', 'twentyseventeen' ),
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'id' => 'sidebar-3',
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'description' => __( 'Add widgets here to appear in your footer.', 'twentyseventeen' ),
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'before_widget' => '<section id="%1$s" class="widget %2$s">',
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'after_widget' => '</section>',
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'before_title' => '<h2 class="widget-title">',
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'after_title' => '</h2>',
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) );
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}
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add_action( 'widgets_init', 'twentyseventeen_widgets_init' );
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/**
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* Replaces "[...]" (appended to automatically generated excerpts) with ... and
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* a 'Continue reading' link.
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*
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* Create your own twentysixteen_excerpt_more() function to override in a child theme.
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*
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* @since Twenty Seventeen 1.0
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*
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* @return string 'Continue reading' link prepended with an ellipsis.
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*/
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function twentyseventeen_excerpt_more() {
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$link = sprintf( '<p class="link-more"><a href="%1$s" class="more-link">%2$s</a></p>',
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esc_url( get_permalink( get_the_ID() ) ),
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/* translators: %s: Name of current post */
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sprintf( __( 'Continue reading<span class="screen-reader-text"> "%s"</span>', 'twentyseventeen' ), get_the_title( get_the_ID() ) )
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);
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return ' … ' . $link;
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}
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add_filter( 'excerpt_more', 'twentyseventeen_excerpt_more' );
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/**
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* Handles JavaScript detection.
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*
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* Adds a `js` class to the root `<html>` element when JavaScript is detected.
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*
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* @since Twenty Seventeen 1.0
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*/
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function twentyseventeen_javascript_detection() {
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echo "<script>(function(html){html.className = html.className.replace(/\bno-js\b/,'js')})(document.documentElement);</script>\n";
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}
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add_action( 'wp_head', 'twentyseventeen_javascript_detection', 0 );
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/**
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* Add a pingback url auto-discovery header for singularly identifiable articles.
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*/
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function twentyseventeen_pingback_header() {
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if ( is_singular() && pings_open() ) {
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printf( '<link rel="pingback" href="%s">' . "\n", get_bloginfo( 'pingback_url' ) );
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}
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}
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add_action( 'wp_head', 'twentyseventeen_pingback_header' );
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/**
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* Display custom color CSS.
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*/
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function twentyseventeen_colors_css_wrap() {
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if ( 'custom' !== get_theme_mod( 'colorscheme' ) && ! is_customize_preview() ) {
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return;
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}
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require_once( get_parent_theme_file_path( '/inc/color-patterns.php' ) );
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$hue = absint( get_theme_mod( 'colorscheme_hue', 250 ) );
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?>
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<style type="text/css" id="custom-theme-colors" <?php if ( is_customize_preview() ) { echo 'data-hue="' . $hue . '"'; } ?>>
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<?php echo twentyseventeen_custom_colors_css(); ?>
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</style>
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<?php }
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add_action( 'wp_head', 'twentyseventeen_colors_css_wrap' );
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/**
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* Enqueue scripts and styles.
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*/
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function twentyseventeen_scripts() {
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// Add custom fonts, used in the main stylesheet.
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wp_enqueue_style( 'twentyseventeen-fonts', twentyseventeen_fonts_url(), array(), null );
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// Theme stylesheet.
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wp_enqueue_style( 'twentyseventeen-style', get_stylesheet_uri() );
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// Load the dark colorscheme.
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if ( 'dark' === get_theme_mod( 'colorscheme', 'light' ) || is_customize_preview() ) {
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wp_enqueue_style( 'twentyseventeen-colors-dark', get_theme_file_uri( '/assets/css/colors-dark.css' ), array( 'twentyseventeen-style' ), '1.0' );
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}
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// Load the Internet Explorer 8 specific stylesheet.
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wp_enqueue_style( 'twentyseventeen-ie8', get_theme_file_uri( '/assets/css/ie8.css' ), array( 'twentyseventeen-style' ), '1.0' );
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wp_style_add_data( 'twentyseventeen-ie8', 'conditional', 'lt IE 9' );
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// Load the html5 shiv.
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wp_enqueue_script( 'html5', get_theme_file_uri( '/assets/js/html5.js' ), array(), '3.7.3' );
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wp_script_add_data( 'html5', 'conditional', 'lt IE 9' );
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wp_enqueue_script( 'twentyseventeen-skip-link-focus-fix', get_theme_file_uri( '/assets/js/skip-link-focus-fix.js' ), array(), '1.0', true );
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$twentyseventeen_l10n = array(
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'quote' => twentyseventeen_get_svg( array( 'icon' => 'quote-right' ) ),
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'has_navigation' => 'false',
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);
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if ( has_nav_menu( 'top' ) ) {
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wp_enqueue_script( 'twentyseventeen-navigation', get_theme_file_uri( '/assets/js/navigation.js' ), array(), '1.0', true );
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$twentyseventeen_l10n['has_navigation'] = 'true';
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$twentyseventeen_l10n['expand'] = __( 'Expand child menu', 'twentyseventeen' );
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$twentyseventeen_l10n['collapse'] = __( 'Collapse child menu', 'twentyseventeen' );
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$twentyseventeen_l10n['icon'] = twentyseventeen_get_svg( array( 'icon' => 'expand', 'fallback' => true ) );
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}
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wp_enqueue_script( 'twentyseventeen-global', get_theme_file_uri( '/assets/js/global.js' ), array( 'jquery' ), '1.0', true );
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wp_localize_script( 'twentyseventeen-skip-link-focus-fix', 'twentyseventeenScreenReaderText', $twentyseventeen_l10n );
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if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
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wp_enqueue_script( 'comment-reply' );
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}
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// Scroll effects (only loaded on front page).
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if ( is_front_page() ) {
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wp_enqueue_script( 'jquery-scrollto', get_template_directory_uri() . '/assets/js/jquery.scrollTo.js', array( 'jquery' ), '2.1.2', true );
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}
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}
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add_action( 'wp_enqueue_scripts', 'twentyseventeen_scripts' );
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/**
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* Add custom image sizes attribute to enhance responsive image functionality
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* for content images.
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*
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* @since Twenty Seventeen 1.0
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*
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* @param string $sizes A source size value for use in a 'sizes' attribute.
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* @param array $size Image size. Accepts an array of width and height
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* values in pixels (in that order).
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* @return string A source size value for use in a content image 'sizes' attribute.
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*/
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function twentyseventeen_content_image_sizes_attr( $sizes, $size ) {
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$width = $size[0];
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740 <= $width && $sizes = '(max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px';
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if ( is_active_sidebar( 'sidebar-1' ) || is_archive() || is_search() || is_home() || is_page() ) {
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if ( ! ( is_page() && 'one-column' === get_theme_mod( 'page_options' ) ) ) {
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767 <= $width && $sizes = '(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px';
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}
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}
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return $sizes;
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}
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add_filter( 'wp_calculate_image_sizes', 'twentyseventeen_content_image_sizes_attr', 10, 2 );
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/**
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* Add custom image sizes attribute to enhance responsive image functionality
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* for post thumbnails.
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*
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* @since Twenty Seventeen 1.0
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*
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* @param array $attr Attributes for the image markup.
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* @param int $attachment Image attachment ID.
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* @param array $size Registered image size or flat array of height and width dimensions.
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* @return string A source size value for use in a post thumbnail 'sizes' attribute.
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*/
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function twentyseventeen_post_thumbnail_sizes_attr( $attr, $attachment, $size ) {
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if ( is_archive() || is_search() || is_home() ) {
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$attr['sizes'] = '(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px';
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} else {
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$attr['sizes'] = '100vw';
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}
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return $attr;
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}
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add_filter( 'wp_get_attachment_image_attributes', 'twentyseventeen_post_thumbnail_sizes_attr', 10, 3 );
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/**
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* Use front-page.php when Front page displays is set to a static page.
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*
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* @since Twenty Seventeen 1.0
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*
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* @param string $template front-page.php.
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*
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* @return string The template to be used: blank if is_home() is true (defaults to index.php), else $template.
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*/
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function twentyseventeen_front_page_template( $template ) {
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return is_home() ? '' : $template;
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}
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add_filter( 'frontpage_template', 'twentyseventeen_front_page_template' );
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/**
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* Implement the Custom Header feature.
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*/
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require get_parent_theme_file_path( '/inc/custom-header.php' );
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/**
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* Custom template tags for this theme.
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*/
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require get_parent_theme_file_path( '/inc/template-tags.php' );
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/**
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* Additional features to allow styling of the templates.
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*/
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require get_parent_theme_file_path( '/inc/template-functions.php' );
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/**
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* Customizer additions.
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*/
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require get_parent_theme_file_path( '/inc/customizer.php' );
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/**
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* SVG icons functions and filters.
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*/
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require get_parent_theme_file_path( '/inc/icon-functions.php' );
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