--- /dev/null
+<?php
+/**
+ * Twenty Seventeen functions and definitions
+ *
+ * @link https://developer.wordpress.org/themes/basics/theme-functions/
+ *
+ * @package WordPress
+ * @subpackage Twenty_Seventeen
+ * @since 1.0
+ */
+
+/**
+ * Twenty Seventeen only works in WordPress 4.7 or later.
+ */
+if ( version_compare( $GLOBALS['wp_version'], '4.7-alpha', '<' ) ) {
+ require get_template_directory() . '/inc/back-compat.php';
+ return;
+}
+
+/**
+ * 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.
+ */
+function twentyseventeen_setup() {
+ /*
+ * Make theme available for translation.
+ * Translations can be filed at WordPress.org. See: https://translate.wordpress.org/projects/wp-themes/twentyseventeen
+ * If you're building a theme based on Twenty Seventeen, use a find and replace
+ * to change 'twentyseventeen' to the name of your theme in all the template files.
+ */
+ load_theme_textdomain( 'twentyseventeen' );
+
+ // 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 Post Thumbnails on posts and pages.
+ *
+ * @link https://developer.wordpress.org/themes/functionality/featured-images-post-thumbnails/
+ */
+ add_theme_support( 'post-thumbnails' );
+
+ add_image_size( 'twentyseventeen-featured-image', 2000, 1200, true );
+
+ add_image_size( 'twentyseventeen-thumbnail-avatar', 100, 100, true );
+
+ // This theme uses wp_nav_menu() in two locations.
+ register_nav_menus( array(
+ 'top' => __( 'Top Menu', 'twentyseventeen' ),
+ 'social' => __( 'Social Links Menu', 'twentyseventeen' ),
+ ) );
+
+ /*
+ * Switch default core markup for search form, comment form, and comments
+ * to output valid HTML5.
+ */
+ add_theme_support( 'html5', array(
+ 'comment-form',
+ 'comment-list',
+ 'gallery',
+ 'caption',
+ ) );
+
+ /*
+ * Enable support for Post Formats.
+ *
+ * See: https://codex.wordpress.org/Post_Formats
+ */
+ add_theme_support( 'post-formats', array(
+ 'aside',
+ 'image',
+ 'video',
+ 'quote',
+ 'link',
+ 'gallery',
+ 'audio',
+ ) );
+
+ // Add theme support for Custom Logo.
+ add_theme_support( 'custom-logo', array(
+ 'width' => 250,
+ 'height' => 250,
+ 'flex-width' => true,
+ ) );
+
+ // Add theme support for selective refresh for widgets.
+ add_theme_support( 'customize-selective-refresh-widgets' );
+
+ /*
+ * This theme styles the visual editor to resemble the theme style,
+ * specifically font, colors, and column width.
+ */
+ add_editor_style( array( 'assets/css/editor-style.css', twentyseventeen_fonts_url() ) );
+
+ add_theme_support( 'starter-content', array(
+ 'widgets' => array(
+ 'sidebar-1' => array(
+ 'text_business_info',
+ 'search',
+ 'text_about',
+ ),
+
+ 'sidebar-2' => array(
+ 'text_business_info',
+ ),
+
+ 'sidebar-3' => array(
+ 'text_about',
+ 'search',
+ ),
+ ),
+
+ 'posts' => array(
+ 'home',
+ 'about' => array(
+ 'thumbnail' => '{{image-sandwich}}',
+ ),
+ 'contact' => array(
+ 'thumbnail' => '{{image-espresso}}',
+ ),
+ 'blog' => array(
+ 'thumbnail' => '{{image-coffee}}',
+ ),
+ 'homepage-section' => array(
+ 'thumbnail' => '{{image-espresso}}',
+ ),
+ ),
+
+ 'attachments' => array(
+ 'image-espresso' => array(
+ 'post_title' => _x( 'Espresso', 'Theme starter content', 'twentyseventeen' ),
+ 'file' => 'assets/images/espresso.jpg',
+ ),
+ 'image-sandwich' => array(
+ 'post_title' => _x( 'Sandwich', 'Theme starter content', 'twentyseventeen' ),
+ 'file' => 'assets/images/sandwich.jpg',
+ ),
+ 'image-coffee' => array(
+ 'post_title' => _x( 'Coffee', 'Theme starter content', 'twentyseventeen' ),
+ 'file' => 'assets/images/coffee.jpg',
+ ),
+ ),
+
+ 'options' => array(
+ 'show_on_front' => 'page',
+ 'page_on_front' => '{{home}}',
+ 'page_for_posts' => '{{blog}}',
+ ),
+
+ 'theme_mods' => array(
+ 'panel_1' => '{{homepage-section}}',
+ 'panel_2' => '{{about}}',
+ 'panel_3' => '{{blog}}',
+ 'panel_4' => '{{contact}}',
+ ),
+
+ 'nav_menus' => array(
+ 'top' => array(
+ 'name' => __( 'Top Menu', 'twentyseventeen' ),
+ 'items' => array(
+ 'page_home',
+ 'page_about',
+ 'page_blog',
+ 'page_contact',
+ ),
+ ),
+ 'social' => array(
+ 'name' => __( 'Social Links Menu', 'twentyseventeen' ),
+ 'items' => array(
+ 'link_yelp',
+ 'link_facebook',
+ 'link_twitter',
+ 'link_instagram',
+ 'link_email',
+ ),
+ ),
+ ),
+ ) );
+}
+add_action( 'after_setup_theme', 'twentyseventeen_setup' );
+
+/**
+ * Set 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
+ */
+function twentyseventeen_content_width() {
+
+ $content_width = 700;
+
+ if ( twentyseventeen_is_frontpage() ) {
+ $content_width = 1120;
+ }
+
+ /**
+ * Filter Twenty Seventeen content width of the theme.
+ *
+ * @since Twenty Seventeen 1.0
+ *
+ * @param $content_width integer
+ */
+ $GLOBALS['content_width'] = apply_filters( 'twentyseventeen_content_width', $content_width );
+}
+add_action( 'after_setup_theme', 'twentyseventeen_content_width', 0 );
+
+/**
+ * Register custom fonts.
+ */
+function twentyseventeen_fonts_url() {
+ $fonts_url = '';
+
+ /**
+ * Translators: If there are characters in your language that are not
+ * supported by Libre Franklin, translate this to 'off'. Do not translate
+ * into your own language.
+ */
+ $libre_franklin = _x( 'on', 'Libre Franklin font: on or off', 'twentyseventeen' );
+
+ if ( 'off' !== $libre_franklin ) {
+ $font_families = array();
+
+ $font_families[] = 'Libre Franklin:300,300i,400,400i,600,600i,800,800i';
+
+ $query_args = array(
+ 'family' => urlencode( implode( '|', $font_families ) ),
+ 'subset' => urlencode( 'latin,latin-ext' ),
+ );
+
+ $fonts_url = add_query_arg( $query_args, 'https://fonts.googleapis.com/css' );
+ }
+
+ return esc_url_raw( $fonts_url );
+}
+
+/**
+ * Add preconnect for Google Fonts.
+ *
+ * @since Twenty Seventeen 1.0
+ *
+ * @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 twentyseventeen_resource_hints( $urls, $relation_type ) {
+ if ( wp_style_is( 'twentyseventeen-fonts', 'queue' ) && 'preconnect' === $relation_type ) {
+ $urls[] = array(
+ 'href' => 'https://fonts.gstatic.com',
+ 'crossorigin',
+ );
+ }
+
+ return $urls;
+}
+add_filter( 'wp_resource_hints', 'twentyseventeen_resource_hints', 10, 2 );
+
+/**
+ * Register widget area.
+ *
+ * @link https://developer.wordpress.org/themes/functionality/sidebars/#registering-a-sidebar
+ */
+function twentyseventeen_widgets_init() {
+ register_sidebar( array(
+ 'name' => __( 'Sidebar', 'twentyseventeen' ),
+ 'id' => 'sidebar-1',
+ 'description' => __( 'Add widgets here to appear in your sidebar.', 'twentyseventeen' ),
+ 'before_widget' => '<section id="%1$s" class="widget %2$s">',
+ 'after_widget' => '</section>',
+ 'before_title' => '<h2 class="widget-title">',
+ 'after_title' => '</h2>',
+ ) );
+
+ register_sidebar( array(
+ 'name' => __( 'Footer 1', 'twentyseventeen' ),
+ 'id' => 'sidebar-2',
+ 'description' => __( 'Add widgets here to appear in your footer.', 'twentyseventeen' ),
+ 'before_widget' => '<section id="%1$s" class="widget %2$s">',
+ 'after_widget' => '</section>',
+ 'before_title' => '<h2 class="widget-title">',
+ 'after_title' => '</h2>',
+ ) );
+
+ register_sidebar( array(
+ 'name' => __( 'Footer 2', 'twentyseventeen' ),
+ 'id' => 'sidebar-3',
+ 'description' => __( 'Add widgets here to appear in your footer.', 'twentyseventeen' ),
+ 'before_widget' => '<section id="%1$s" class="widget %2$s">',
+ 'after_widget' => '</section>',
+ 'before_title' => '<h2 class="widget-title">',
+ 'after_title' => '</h2>',
+ ) );
+}
+add_action( 'widgets_init', 'twentyseventeen_widgets_init' );
+
+/**
+ * Replaces "[...]" (appended to automatically generated excerpts) with ... and
+ * a 'Continue reading' link.
+ *
+ * @since Twenty Seventeen 1.0
+ *
+ * @return string 'Continue reading' link prepended with an ellipsis.
+ */
+function twentyseventeen_excerpt_more( $link ) {
+ if ( is_admin() ) {
+ return $link;
+ }
+
+ $link = sprintf( '<p class="link-more"><a href="%1$s" class="more-link">%2$s</a></p>',
+ esc_url( get_permalink( get_the_ID() ) ),
+ /* translators: %s: Name of current post */
+ sprintf( __( 'Continue reading<span class="screen-reader-text"> "%s"</span>', 'twentyseventeen' ), get_the_title( get_the_ID() ) )
+ );
+ return ' … ' . $link;
+}
+add_filter( 'excerpt_more', 'twentyseventeen_excerpt_more' );
+
+/**
+ * Handles JavaScript detection.
+ *
+ * Adds a `js` class to the root `<html>` element when JavaScript is detected.
+ *
+ * @since Twenty Seventeen 1.0
+ */
+function twentyseventeen_javascript_detection() {
+ echo "<script>(function(html){html.className = html.className.replace(/\bno-js\b/,'js')})(document.documentElement);</script>\n";
+}
+add_action( 'wp_head', 'twentyseventeen_javascript_detection', 0 );
+
+/**
+ * Add a pingback url auto-discovery header for singularly identifiable articles.
+ */
+function twentyseventeen_pingback_header() {
+ if ( is_singular() && pings_open() ) {
+ printf( '<link rel="pingback" href="%s">' . "\n", get_bloginfo( 'pingback_url' ) );
+ }
+}
+add_action( 'wp_head', 'twentyseventeen_pingback_header' );
+
+/**
+ * Display custom color CSS.
+ */
+function twentyseventeen_colors_css_wrap() {
+ if ( 'custom' !== get_theme_mod( 'colorscheme' ) && ! is_customize_preview() ) {
+ return;
+ }
+
+ require_once( get_parent_theme_file_path( '/inc/color-patterns.php' ) );
+ $hue = absint( get_theme_mod( 'colorscheme_hue', 250 ) );
+?>
+ <style type="text/css" id="custom-theme-colors" <?php if ( is_customize_preview() ) { echo 'data-hue="' . $hue . '"'; } ?>>
+ <?php echo twentyseventeen_custom_colors_css(); ?>
+ </style>
+<?php }
+add_action( 'wp_head', 'twentyseventeen_colors_css_wrap' );
+
+/**
+ * Enqueue scripts and styles.
+ */
+function twentyseventeen_scripts() {
+ // Add custom fonts, used in the main stylesheet.
+ wp_enqueue_style( 'twentyseventeen-fonts', twentyseventeen_fonts_url(), array(), null );
+
+ // Theme stylesheet.
+ wp_enqueue_style( 'twentyseventeen-style', get_stylesheet_uri() );
+
+ // Load the dark colorscheme.
+ if ( 'dark' === get_theme_mod( 'colorscheme', 'light' ) || is_customize_preview() ) {
+ wp_enqueue_style( 'twentyseventeen-colors-dark', get_theme_file_uri( '/assets/css/colors-dark.css' ), array( 'twentyseventeen-style' ), '1.0' );
+ }
+
+ // Load the Internet Explorer 9 specific stylesheet, to fix display issues in the Customizer.
+ if ( is_customize_preview() ) {
+ wp_enqueue_style( 'twentyseventeen-ie9', get_theme_file_uri( '/assets/css/ie9.css' ), array( 'twentyseventeen-style' ), '1.0' );
+ wp_style_add_data( 'twentyseventeen-ie9', 'conditional', 'IE 9' );
+ }
+
+ // Load the Internet Explorer 8 specific stylesheet.
+ wp_enqueue_style( 'twentyseventeen-ie8', get_theme_file_uri( '/assets/css/ie8.css' ), array( 'twentyseventeen-style' ), '1.0' );
+ wp_style_add_data( 'twentyseventeen-ie8', 'conditional', 'lt IE 9' );
+
+ // Load the html5 shiv.
+ wp_enqueue_script( 'html5', get_theme_file_uri( '/assets/js/html5.js' ), array(), '3.7.3' );
+ wp_script_add_data( 'html5', 'conditional', 'lt IE 9' );
+
+ wp_enqueue_script( 'twentyseventeen-skip-link-focus-fix', get_theme_file_uri( '/assets/js/skip-link-focus-fix.js' ), array(), '1.0', true );
+
+ $twentyseventeen_l10n = array(
+ 'quote' => twentyseventeen_get_svg( array( 'icon' => 'quote-right' ) ),
+ );
+
+ if ( has_nav_menu( 'top' ) ) {
+ wp_enqueue_script( 'twentyseventeen-navigation', get_theme_file_uri( '/assets/js/navigation.js' ), array(), '1.0', true );
+ $twentyseventeen_l10n['expand'] = __( 'Expand child menu', 'twentyseventeen' );
+ $twentyseventeen_l10n['collapse'] = __( 'Collapse child menu', 'twentyseventeen' );
+ $twentyseventeen_l10n['icon'] = twentyseventeen_get_svg( array( 'icon' => 'angle-down', 'fallback' => true ) );
+ }
+
+ wp_enqueue_script( 'twentyseventeen-global', get_theme_file_uri( '/assets/js/global.js' ), array( 'jquery' ), '1.0', 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' );
+
+/**
+ * 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 );
+
+/**
+ * Filter 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 string A source size value for use in a post thumbnail 'sizes' attribute.
+ */
+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), else $template.
+ */
+function twentyseventeen_front_page_template( $template ) {
+ return is_home() ? '' : $template;
+}
+add_filter( 'frontpage_template', 'twentyseventeen_front_page_template' );
+
+/**
+ * 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' );
scripts.mit.edu / autoinstallsdev / wordpress.git / blobdiff