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The following theme versions will be released in coordination with WordPress 5.6: * Twenty Ten: 3.2 * Twenty Eleven: 3.6 * Twenty Twelve: 3.3 * Twenty Thirteen: 3.2 * Twenty Fourteen: 3.0 * Twenty Fifteen: 2.8 * Twenty Sixteen: 2.3 * Twenty Seventeen: 2.5 * Twenty Nineteen: 1.8 * Twenty Twenty: 1.6 * Twenty Twenty-One: 1.0 Props peterwilsoncc, hareesh-pillai, dkarfa, sabernhardt, poena, aristath, SergeyBiryukov. Fixes #51919. Built from https://develop.svn.wordpress.org/trunk@49763 git-svn-id: http://core.svn.wordpress.org/trunk@49486 1a063a9b-81f0-0310-95a4-ce76da25c4cd
677 lines
21 KiB
PHP
677 lines
21 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 Twenty Seventeen 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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* Enables custom line height for blocks
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*/
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add_theme_support( 'custom-line-height' );
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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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// Set the default content width.
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$GLOBALS['content_width'] = 525;
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// This theme uses wp_nav_menu() in two locations.
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register_nav_menus(
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array(
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'top' => __( 'Top Menu', 'twentyseventeen' ),
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'social' => __( 'Social Links Menu', 'twentyseventeen' ),
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)
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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(
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'html5',
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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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'script',
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'style',
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'navigation-widgets',
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)
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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://wordpress.org/support/article/post-formats/
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*/
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add_theme_support(
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'post-formats',
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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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);
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// Add theme support for Custom Logo.
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add_theme_support(
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'custom-logo',
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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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// Add theme support for selective refresh for widgets.
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add_theme_support( 'customize-selective-refresh-widgets' );
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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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// Load regular editor styles into the new block-based editor.
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add_theme_support( 'editor-styles' );
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// Load default block styles.
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add_theme_support( 'wp-block-styles' );
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// Add support for responsive embeds.
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add_theme_support( 'responsive-embeds' );
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// Define and register starter content to showcase the theme on new sites.
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$starter_content = array(
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'widgets' => array(
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// Place three core-defined widgets in the sidebar area.
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'sidebar-1' => array(
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'text_business_info',
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'search',
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'text_about',
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),
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// Add the core-defined business info widget to the footer 1 area.
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'sidebar-2' => array(
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'text_business_info',
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),
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// Put two core-defined widgets in the footer 2 area.
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'sidebar-3' => array(
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'text_about',
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'search',
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),
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),
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// Specify the core-defined pages to create and add custom thumbnails to some of them.
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'posts' => array(
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'home',
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'about' => array(
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'thumbnail' => '{{image-sandwich}}',
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),
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'contact' => array(
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'thumbnail' => '{{image-espresso}}',
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),
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'blog' => array(
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'thumbnail' => '{{image-coffee}}',
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),
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'homepage-section' => array(
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'thumbnail' => '{{image-espresso}}',
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),
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),
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// Create the custom image attachments used as post thumbnails for pages.
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'attachments' => array(
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'image-espresso' => array(
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'post_title' => _x( 'Espresso', 'Theme starter content', 'twentyseventeen' ),
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'file' => 'assets/images/espresso.jpg', // URL relative to the template directory.
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),
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'image-sandwich' => array(
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'post_title' => _x( 'Sandwich', 'Theme starter content', 'twentyseventeen' ),
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'file' => 'assets/images/sandwich.jpg',
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),
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'image-coffee' => array(
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'post_title' => _x( 'Coffee', 'Theme starter content', 'twentyseventeen' ),
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'file' => 'assets/images/coffee.jpg',
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),
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),
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// Default to a static front page and assign the front and posts pages.
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'options' => array(
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'show_on_front' => 'page',
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'page_on_front' => '{{home}}',
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'page_for_posts' => '{{blog}}',
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),
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// Set the front page section theme mods to the IDs of the core-registered pages.
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'theme_mods' => array(
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'panel_1' => '{{homepage-section}}',
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'panel_2' => '{{about}}',
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'panel_3' => '{{blog}}',
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'panel_4' => '{{contact}}',
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),
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// Set up nav menus for each of the two areas registered in the theme.
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'nav_menus' => array(
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// Assign a menu to the "top" location.
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'top' => array(
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'name' => __( 'Top Menu', 'twentyseventeen' ),
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'items' => array(
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'link_home', // Note that the core "home" page is actually a link in case a static front page is not used.
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'page_about',
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'page_blog',
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'page_contact',
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),
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),
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// Assign a menu to the "social" location.
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'social' => array(
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'name' => __( 'Social Links Menu', 'twentyseventeen' ),
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'items' => array(
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'link_yelp',
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'link_facebook',
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'link_twitter',
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'link_instagram',
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'link_email',
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),
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),
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),
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);
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/**
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* Filters Twenty Seventeen array of starter content.
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*
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* @since Twenty Seventeen 1.1
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*
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* @param array $starter_content Array of starter content.
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*/
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$starter_content = apply_filters( 'twentyseventeen_starter_content', $starter_content );
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add_theme_support( 'starter-content', $starter_content );
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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 = $GLOBALS['content_width'];
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// Get layout.
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$page_layout = get_theme_mod( 'page_layout' );
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// Check if layout is one column.
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if ( 'one-column' === $page_layout ) {
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if ( twentyseventeen_is_frontpage() ) {
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$content_width = 644;
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} elseif ( is_page() ) {
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$content_width = 740;
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}
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}
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// Check if is single post and there is no sidebar.
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if ( is_single() && ! is_active_sidebar( 'sidebar-1' ) ) {
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$content_width = 740;
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}
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/**
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* Filters Twenty Seventeen content width of the theme.
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*
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* @since Twenty Seventeen 1.0
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*
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* @param int $content_width Content width in pixels.
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*/
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$GLOBALS['content_width'] = apply_filters( 'twentyseventeen_content_width', $content_width );
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}
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add_action( 'template_redirect', 'twentyseventeen_content_width', 0 );
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/**
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* Register custom fonts.
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*/
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function twentyseventeen_fonts_url() {
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$fonts_url = '';
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/*
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* translators: If there are characters in your language that are not supported
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* by Libre Franklin, translate this to 'off'. Do not translate 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( '|', $font_families ) ),
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'subset' => urlencode( 'latin,latin-ext' ),
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'display' => urlencode( 'fallback' ),
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);
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$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 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 $urls;
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}
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add_filter( 'wp_resource_hints', 'twentyseventeen_resource_hints', 10, 2 );
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/**
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* Register widget area.
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*
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* @link https://developer.wordpress.org/themes/functionality/sidebars/#registering-a-sidebar
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*/
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function twentyseventeen_widgets_init() {
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register_sidebar(
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array(
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'name' => __( 'Blog Sidebar', 'twentyseventeen' ),
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'id' => 'sidebar-1',
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'description' => __( 'Add widgets here to appear in your sidebar on blog posts and archive pages.', 'twentyseventeen' ),
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'before_widget' => '<section id="%1$s" class="widget %2$s">',
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'after_widget' => '</section>',
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'before_title' => '<h2 class="widget-title">',
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'after_title' => '</h2>',
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)
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);
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register_sidebar(
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array(
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'name' => __( 'Footer 1', 'twentyseventeen' ),
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'id' => 'sidebar-2',
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'description' => __( 'Add widgets here to appear in your footer.', 'twentyseventeen' ),
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'before_widget' => '<section id="%1$s" class="widget %2$s">',
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'after_widget' => '</section>',
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'before_title' => '<h2 class="widget-title">',
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'after_title' => '</h2>',
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)
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);
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register_sidebar(
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array(
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'name' => __( 'Footer 2', 'twentyseventeen' ),
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'id' => 'sidebar-3',
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'description' => __( 'Add widgets here to appear in your footer.', 'twentyseventeen' ),
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'before_widget' => '<section id="%1$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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}
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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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* @since Twenty Seventeen 1.0
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*
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* @param string $link Link to single post/page.
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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( $link ) {
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if ( is_admin() ) {
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return $link;
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}
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$link = sprintf(
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'<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: Post title. */
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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", esc_url( 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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$customize_preview_data_hue = '';
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if ( is_customize_preview() ) {
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$customize_preview_data_hue = 'data-hue="' . $hue . '"';
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}
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?>
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<style type="text/css" id="custom-theme-colors" <?php echo $customize_preview_data_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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}
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add_action( 'wp_head', 'twentyseventeen_colors_css_wrap' );
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/**
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* Enqueues 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(), array(), '20201208' );
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// Theme block stylesheet.
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wp_enqueue_style( 'twentyseventeen-block-style', get_theme_file_uri( '/assets/css/blocks.css' ), array( 'twentyseventeen-style' ), '20190105' );
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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' ), '20190408' );
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}
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// Load the Internet Explorer 9 specific stylesheet, to fix display issues in the Customizer.
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if ( is_customize_preview() ) {
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wp_enqueue_style( 'twentyseventeen-ie9', get_theme_file_uri( '/assets/css/ie9.css' ), array( 'twentyseventeen-style' ), '20161202' );
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wp_style_add_data( 'twentyseventeen-ie9', 'conditional', 'IE 9' );
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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' ), '20161202' );
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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(), '20161020' );
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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(), '20161114', true );
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$twentyseventeen_l10n = array(
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'quote' => twentyseventeen_get_svg( array( 'icon' => 'quote-right' ) ),
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|
);
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|
|
|
if ( has_nav_menu( 'top' ) ) {
|
|
wp_enqueue_script( 'twentyseventeen-navigation', get_theme_file_uri( '/assets/js/navigation.js' ), array( 'jquery' ), '20161203', true );
|
|
$twentyseventeen_l10n['expand'] = __( 'Expand child menu', 'twentyseventeen' );
|
|
$twentyseventeen_l10n['collapse'] = __( 'Collapse child menu', 'twentyseventeen' );
|
|
$twentyseventeen_l10n['icon'] = twentyseventeen_get_svg(
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|
array(
|
|
'icon' => 'angle-down',
|
|
'fallback' => true,
|
|
)
|
|
);
|
|
}
|
|
|
|
wp_enqueue_script( 'twentyseventeen-global', get_theme_file_uri( '/assets/js/global.js' ), array( 'jquery' ), '20190121', true );
|
|
|
|
wp_enqueue_script( 'jquery-scrollto', get_theme_file_uri( '/assets/js/jquery.scrollTo.js' ), array( 'jquery' ), '2.1.2', true );
|
|
|
|
wp_localize_script( 'twentyseventeen-skip-link-focus-fix', 'twentyseventeenScreenReaderText', $twentyseventeen_l10n );
|
|
|
|
if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
|
|
wp_enqueue_script( 'comment-reply' );
|
|
}
|
|
}
|
|
add_action( 'wp_enqueue_scripts', 'twentyseventeen_scripts' );
|
|
|
|
/**
|
|
* Enqueues styles for the block-based editor.
|
|
*
|
|
* @since Twenty Seventeen 1.8
|
|
*/
|
|
function twentyseventeen_block_editor_styles() {
|
|
// Block styles.
|
|
wp_enqueue_style( 'twentyseventeen-block-editor-style', get_theme_file_uri( '/assets/css/editor-blocks.css' ), array(), '20201208' );
|
|
// Add custom fonts.
|
|
wp_enqueue_style( 'twentyseventeen-fonts', twentyseventeen_fonts_url(), array(), null );
|
|
}
|
|
add_action( 'enqueue_block_editor_assets', 'twentyseventeen_block_editor_styles' );
|
|
|
|
/**
|
|
* Add custom image sizes attribute to enhance responsive image functionality
|
|
* for content images.
|
|
*
|
|
* @since Twenty Seventeen 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 twentyseventeen_content_image_sizes_attr( $sizes, $size ) {
|
|
$width = $size[0];
|
|
|
|
if ( 740 <= $width ) {
|
|
$sizes = '(max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px';
|
|
}
|
|
|
|
if ( is_active_sidebar( 'sidebar-1' ) || is_archive() || is_search() || is_home() || is_page() ) {
|
|
if ( ! ( is_page() && 'one-column' === get_theme_mod( 'page_options' ) ) && 767 <= $width ) {
|
|
$sizes = '(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px';
|
|
}
|
|
}
|
|
|
|
return $sizes;
|
|
}
|
|
add_filter( 'wp_calculate_image_sizes', 'twentyseventeen_content_image_sizes_attr', 10, 2 );
|
|
|
|
/**
|
|
* Filters the `sizes` value in the header image markup.
|
|
*
|
|
* @since Twenty Seventeen 1.0
|
|
*
|
|
* @param string $html The HTML image tag markup being filtered.
|
|
* @param object $header The custom header object returned by 'get_custom_header()'.
|
|
* @param array $attr Array of the attributes for the image tag.
|
|
* @return string The filtered header image HTML.
|
|
*/
|
|
function twentyseventeen_header_image_tag( $html, $header, $attr ) {
|
|
if ( isset( $attr['sizes'] ) ) {
|
|
$html = str_replace( $attr['sizes'], '100vw', $html );
|
|
}
|
|
return $html;
|
|
}
|
|
add_filter( 'get_header_image_tag', 'twentyseventeen_header_image_tag', 10, 3 );
|
|
|
|
/**
|
|
* Add custom image sizes attribute to enhance responsive image functionality
|
|
* for post thumbnails.
|
|
*
|
|
* @since Twenty Seventeen 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 twentyseventeen_post_thumbnail_sizes_attr( $attr, $attachment, $size ) {
|
|
if ( is_archive() || is_search() || is_home() ) {
|
|
$attr['sizes'] = '(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px';
|
|
} else {
|
|
$attr['sizes'] = '100vw';
|
|
}
|
|
|
|
return $attr;
|
|
}
|
|
add_filter( 'wp_get_attachment_image_attributes', 'twentyseventeen_post_thumbnail_sizes_attr', 10, 3 );
|
|
|
|
/**
|
|
* Use front-page.php when Front page displays is set to a static page.
|
|
*
|
|
* @since Twenty Seventeen 1.0
|
|
*
|
|
* @param string $template front-page.php.
|
|
* @return string The template to be used: blank if is_home() is true (defaults to index.php),
|
|
* otherwise $template.
|
|
*/
|
|
function twentyseventeen_front_page_template( $template ) {
|
|
return is_home() ? '' : $template;
|
|
}
|
|
add_filter( 'frontpage_template', 'twentyseventeen_front_page_template' );
|
|
|
|
/**
|
|
* Modifies tag cloud widget arguments to display all tags in the same font size
|
|
* and use list format for better accessibility.
|
|
*
|
|
* @since Twenty Seventeen 1.4
|
|
*
|
|
* @param array $args Arguments for tag cloud widget.
|
|
* @return array The filtered arguments for tag cloud widget.
|
|
*/
|
|
function twentyseventeen_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', 'twentyseventeen_widget_tag_cloud_args' );
|
|
|
|
/**
|
|
* Gets unique ID.
|
|
*
|
|
* This is a PHP implementation of Underscore's uniqueId method. A static variable
|
|
* contains an integer that is incremented with each call. This number is returned
|
|
* with the optional prefix. As such the returned value is not universally unique,
|
|
* but it is unique across the life of the PHP process.
|
|
*
|
|
* @since Twenty Seventeen 2.0
|
|
*
|
|
* @see wp_unique_id() Themes requiring WordPress 5.0.3 and greater should use this instead.
|
|
*
|
|
* @param string $prefix Prefix for the returned ID.
|
|
* @return string Unique ID.
|
|
*/
|
|
function twentyseventeen_unique_id( $prefix = '' ) {
|
|
static $id_counter = 0;
|
|
if ( function_exists( 'wp_unique_id' ) ) {
|
|
return wp_unique_id( $prefix );
|
|
}
|
|
return $prefix . (string) ++$id_counter;
|
|
}
|
|
|
|
/**
|
|
* Implement the Custom Header feature.
|
|
*/
|
|
require get_parent_theme_file_path( '/inc/custom-header.php' );
|
|
|
|
/**
|
|
* Custom template tags for this theme.
|
|
*/
|
|
require get_parent_theme_file_path( '/inc/template-tags.php' );
|
|
|
|
/**
|
|
* Additional features to allow styling of the templates.
|
|
*/
|
|
require get_parent_theme_file_path( '/inc/template-functions.php' );
|
|
|
|
/**
|
|
* Customizer additions.
|
|
*/
|
|
require get_parent_theme_file_path( '/inc/customizer.php' );
|
|
|
|
/**
|
|
* SVG icons functions and filters.
|
|
*/
|
|
require get_parent_theme_file_path( '/inc/icon-functions.php' );
|
|
|
|
/**
|
|
* Block Patterns.
|
|
*/
|
|
require get_template_directory() . '/inc/block-patterns.php';
|