www.gusucode.com > wordpress PHP博客系统英文版 v4.5.1PHP源码程序 > wordpress PHP博客系统英文版 v4.5.1/wordpress/wordpress/wp-content/themes/twentyfourteen/functions.php
<?php
/**
* Twenty Fourteen 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://codex.wordpress.org/Theme_Development
* @link https://codex.wordpress.org/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://codex.wordpress.org/Plugin_API
*
* @package WordPress
* @subpackage Twenty_Fourteen
* @since Twenty Fourteen 1.0
*/
/**
* Set up the content width value based on the theme's design.
*
* @see twentyfourteen_content_width()
*
* @since Twenty Fourteen 1.0
*/
if ( ! isset( $content_width ) ) {
$content_width = 474;
}
/**
* Twenty Fourteen only works in WordPress 3.6 or later.
*/
if ( version_compare( $GLOBALS['wp_version'], '3.6', '<' ) ) {
require get_template_directory() . '/inc/back-compat.php';
}
if ( ! function_exists( 'twentyfourteen_setup' ) ) :
/**
* Twenty Fourteen setup.
*
* Set 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 post thumbnails.
*
* @since Twenty Fourteen 1.0
*/
function twentyfourteen_setup() {
/*
* Make Twenty Fourteen available for translation.
*
* Translations can be added to the /languages/ directory.
* If you're building a theme based on Twenty Fourteen, use a find and
* replace to change 'twentyfourteen' to the name of your theme in all
* template files.
*/
load_theme_textdomain( 'twentyfourteen', get_template_directory() . '/languages' );
// This theme styles the visual editor to resemble the theme style.
add_editor_style( array( 'css/editor-style.css', twentyfourteen_font_url(), 'genericons/genericons.css' ) );
// Add RSS feed links to <head> for posts and comments.
add_theme_support( 'automatic-feed-links' );
// Enable support for Post Thumbnails, and declare two sizes.
add_theme_support( 'post-thumbnails' );
set_post_thumbnail_size( 672, 372, true );
add_image_size( 'twentyfourteen-full-width', 1038, 576, true );
// This theme uses wp_nav_menu() in two locations.
register_nav_menus( array(
'primary' => __( 'Top primary menu', 'twentyfourteen' ),
'secondary' => __( 'Secondary menu in left sidebar', 'twentyfourteen' ),
) );
/*
* 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'
) );
/*
* Enable support for Post Formats.
* See https://codex.wordpress.org/Post_Formats
*/
add_theme_support( 'post-formats', array(
'aside', 'image', 'video', 'audio', 'quote', 'link', 'gallery',
) );
// This theme allows users to set a custom background.
add_theme_support( 'custom-background', apply_filters( 'twentyfourteen_custom_background_args', array(
'default-color' => 'f5f5f5',
) ) );
// Add support for featured content.
add_theme_support( 'featured-content', array(
'featured_content_filter' => 'twentyfourteen_get_featured_posts',
'max_posts' => 6,
) );
// This theme uses its own gallery styles.
add_filter( 'use_default_gallery_style', '__return_false' );
// Indicate widget sidebars can use selective refresh in the Customizer.
add_theme_support( 'customize-selective-refresh-widgets' );
}
endif; // twentyfourteen_setup
add_action( 'after_setup_theme', 'twentyfourteen_setup' );
/**
* Adjust content_width value for image attachment template.
*
* @since Twenty Fourteen 1.0
*/
function twentyfourteen_content_width() {
if ( is_attachment() && wp_attachment_is_image() ) {
$GLOBALS['content_width'] = 810;
}
}
add_action( 'template_redirect', 'twentyfourteen_content_width' );
/**
* Getter function for Featured Content Plugin.
*
* @since Twenty Fourteen 1.0
*
* @return array An array of WP_Post objects.
*/
function twentyfourteen_get_featured_posts() {
/**
* Filter the featured posts to return in Twenty Fourteen.
*
* @since Twenty Fourteen 1.0
*
* @param array|bool $posts Array of featured posts, otherwise false.
*/
return apply_filters( 'twentyfourteen_get_featured_posts', array() );
}
/**
* A helper conditional function that returns a boolean value.
*
* @since Twenty Fourteen 1.0
*
* @return bool Whether there are featured posts.
*/
function twentyfourteen_has_featured_posts() {
return ! is_paged() && (bool) twentyfourteen_get_featured_posts();
}
/**
* Register three Twenty Fourteen widget areas.
*
* @since Twenty Fourteen 1.0
*/
function twentyfourteen_widgets_init() {
require get_template_directory() . '/inc/widgets.php';
register_widget( 'Twenty_Fourteen_Ephemera_Widget' );
register_sidebar( array(
'name' => __( 'Primary Sidebar', 'twentyfourteen' ),
'id' => 'sidebar-1',
'description' => __( 'Main sidebar that appears on the left.', 'twentyfourteen' ),
'before_widget' => '<aside id="%1$s" class="widget %2$s">',
'after_widget' => '</aside>',
'before_title' => '<h1 class="widget-title">',
'after_title' => '</h1>',
) );
register_sidebar( array(
'name' => __( 'Content Sidebar', 'twentyfourteen' ),
'id' => 'sidebar-2',
'description' => __( 'Additional sidebar that appears on the right.', 'twentyfourteen' ),
'before_widget' => '<aside id="%1$s" class="widget %2$s">',
'after_widget' => '</aside>',
'before_title' => '<h1 class="widget-title">',
'after_title' => '</h1>',
) );
register_sidebar( array(
'name' => __( 'Footer Widget Area', 'twentyfourteen' ),
'id' => 'sidebar-3',
'description' => __( 'Appears in the footer section of the site.', 'twentyfourteen' ),
'before_widget' => '<aside id="%1$s" class="widget %2$s">',
'after_widget' => '</aside>',
'before_title' => '<h1 class="widget-title">',
'after_title' => '</h1>',
) );
}
add_action( 'widgets_init', 'twentyfourteen_widgets_init' );
/**
* Register Lato Google font for Twenty Fourteen.
*
* @since Twenty Fourteen 1.0
*
* @return string
*/
function twentyfourteen_font_url() {
$font_url = '';
/*
* Translators: If there are characters in your language that are not supported
* by Lato, translate this to 'off'. Do not translate into your own language.
*/
if ( 'off' !== _x( 'on', 'Lato font: on or off', 'twentyfourteen' ) ) {
$query_args = array(
'family' => urlencode( 'Lato:300,400,700,900,300italic,400italic,700italic' ),
'subset' => urlencode( 'latin,latin-ext' ),
);
$font_url = add_query_arg( $query_args, 'https://fonts.googleapis.com/css' );
}
return $font_url;
}
/**
* Enqueue scripts and styles for the front end.
*
* @since Twenty Fourteen 1.0
*/
function twentyfourteen_scripts() {
// Add Lato font, used in the main stylesheet.
wp_enqueue_style( 'twentyfourteen-lato', twentyfourteen_font_url(), array(), null );
// Add Genericons font, used in the main stylesheet.
wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.0.3' );
// Load our main stylesheet.
wp_enqueue_style( 'twentyfourteen-style', get_stylesheet_uri() );
// Load the Internet Explorer specific stylesheet.
wp_enqueue_style( 'twentyfourteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentyfourteen-style' ), '20131205' );
wp_style_add_data( 'twentyfourteen-ie', 'conditional', 'lt IE 9' );
if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
wp_enqueue_script( 'comment-reply' );
}
if ( is_singular() && wp_attachment_is_image() ) {
wp_enqueue_script( 'twentyfourteen-keyboard-image-navigation', get_template_directory_uri() . '/js/keyboard-image-navigation.js', array( 'jquery' ), '20130402' );
}
if ( is_active_sidebar( 'sidebar-3' ) ) {
wp_enqueue_script( 'jquery-masonry' );
}
if ( is_front_page() && 'slider' == get_theme_mod( 'featured_content_layout' ) ) {
wp_enqueue_script( 'twentyfourteen-slider', get_template_directory_uri() . '/js/slider.js', array( 'jquery' ), '20131205', true );
wp_localize_script( 'twentyfourteen-slider', 'featuredSliderDefaults', array(
'prevText' => __( 'Previous', 'twentyfourteen' ),
'nextText' => __( 'Next', 'twentyfourteen' )
) );
}
wp_enqueue_script( 'twentyfourteen-script', get_template_directory_uri() . '/js/functions.js', array( 'jquery' ), '20150315', true );
}
add_action( 'wp_enqueue_scripts', 'twentyfourteen_scripts' );
/**
* Enqueue Google fonts style to admin screen for custom header display.
*
* @since Twenty Fourteen 1.0
*/
function twentyfourteen_admin_fonts() {
wp_enqueue_style( 'twentyfourteen-lato', twentyfourteen_font_url(), array(), null );
}
add_action( 'admin_print_scripts-appearance_page_custom-header', 'twentyfourteen_admin_fonts' );
if ( ! function_exists( 'twentyfourteen_the_attached_image' ) ) :
/**
* Print the attached image with a link to the next attached image.
*
* @since Twenty Fourteen 1.0
*/
function twentyfourteen_the_attached_image() {
$post = get_post();
/**
* Filter the default Twenty Fourteen attachment size.
*
* @since Twenty Fourteen 1.0
*
* @param array $dimensions {
* An array of height and width dimensions.
*
* @type int $height Height of the image in pixels. Default 810.
* @type int $width Width of the image in pixels. Default 810.
* }
*/
$attachment_size = apply_filters( 'twentyfourteen_attachment_size', array( 810, 810 ) );
$next_attachment_url = wp_get_attachment_url();
/*
* Grab the IDs of all the image attachments in a gallery so we can get the URL
* of the next adjacent image in a gallery, or the first image (if we're
* looking at the last image in a gallery), or, in a gallery of one, just the
* link to that image file.
*/
$attachment_ids = get_posts( array(
'post_parent' => $post->post_parent,
'fields' => 'ids',
'numberposts' => -1,
'post_status' => 'inherit',
'post_type' => 'attachment',
'post_mime_type' => 'image',
'order' => 'ASC',
'orderby' => 'menu_order ID',
) );
// If there is more than 1 attachment in a gallery...
if ( count( $attachment_ids ) > 1 ) {
foreach ( $attachment_ids as $attachment_id ) {
if ( $attachment_id == $post->ID ) {
$next_id = current( $attachment_ids );
break;
}
}
// get the URL of the next image attachment...
if ( $next_id ) {
$next_attachment_url = get_attachment_link( $next_id );
}
// or get the URL of the first image attachment.
else {
$next_attachment_url = get_attachment_link( reset( $attachment_ids ) );
}
}
printf( '<a href="%1$s" rel="attachment">%2$s</a>',
esc_url( $next_attachment_url ),
wp_get_attachment_image( $post->ID, $attachment_size )
);
}
endif;
if ( ! function_exists( 'twentyfourteen_list_authors' ) ) :
/**
* Print a list of all site contributors who published at least one post.
*
* @since Twenty Fourteen 1.0
*/
function twentyfourteen_list_authors() {
$contributor_ids = get_users( array(
'fields' => 'ID',
'orderby' => 'post_count',
'order' => 'DESC',
'who' => 'authors',
) );
foreach ( $contributor_ids as $contributor_id ) :
$post_count = count_user_posts( $contributor_id );
// Move on if user has not published a post (yet).
if ( ! $post_count ) {
continue;
}
?>
<div class="contributor">
<div class="contributor-info">
<div class="contributor-avatar"><?php echo get_avatar( $contributor_id, 132 ); ?></div>
<div class="contributor-summary">
<h2 class="contributor-name"><?php echo get_the_author_meta( 'display_name', $contributor_id ); ?></h2>
<p class="contributor-bio">
<?php echo get_the_author_meta( 'description', $contributor_id ); ?>
</p>
<a class="button contributor-posts-link" href="<?php echo esc_url( get_author_posts_url( $contributor_id ) ); ?>">
<?php printf( _n( '%d Article', '%d Articles', $post_count, 'twentyfourteen' ), $post_count ); ?>
</a>
</div><!-- .contributor-summary -->
</div><!-- .contributor-info -->
</div><!-- .contributor -->
<?php
endforeach;
}
endif;
/**
* Extend the default WordPress body classes.
*
* Adds body classes to denote:
* 1. Single or multiple authors.
* 2. Presence of header image except in Multisite signup and activate pages.
* 3. Index views.
* 4. Full-width content layout.
* 5. Presence of footer widgets.
* 6. Single views.
* 7. Featured content layout.
*
* @since Twenty Fourteen 1.0
*
* @param array $classes A list of existing body class values.
* @return array The filtered body class list.
*/
function twentyfourteen_body_classes( $classes ) {
if ( is_multi_author() ) {
$classes[] = 'group-blog';
}
if ( get_header_image() ) {
$classes[] = 'header-image';
} elseif ( ! in_array( $GLOBALS['pagenow'], array( 'wp-activate.php', 'wp-signup.php' ) ) ) {
$classes[] = 'masthead-fixed';
}
if ( is_archive() || is_search() || is_home() ) {
$classes[] = 'list-view';
}
if ( ( ! is_active_sidebar( 'sidebar-2' ) )
|| is_page_template( 'page-templates/full-width.php' )
|| is_page_template( 'page-templates/contributors.php' )
|| is_attachment() ) {
$classes[] = 'full-width';
}
if ( is_active_sidebar( 'sidebar-3' ) ) {
$classes[] = 'footer-widgets';
}
if ( is_singular() && ! is_front_page() ) {
$classes[] = 'singular';
}
if ( is_front_page() && 'slider' == get_theme_mod( 'featured_content_layout' ) ) {
$classes[] = 'slider';
} elseif ( is_front_page() ) {
$classes[] = 'grid';
}
return $classes;
}
add_filter( 'body_class', 'twentyfourteen_body_classes' );
/**
* Extend the default WordPress post classes.
*
* Adds a post class to denote:
* Non-password protected page with a post thumbnail.
*
* @since Twenty Fourteen 1.0
*
* @param array $classes A list of existing post class values.
* @return array The filtered post class list.
*/
function twentyfourteen_post_classes( $classes ) {
if ( ! post_password_required() && ! is_attachment() && has_post_thumbnail() ) {
$classes[] = 'has-post-thumbnail';
}
return $classes;
}
add_filter( 'post_class', 'twentyfourteen_post_classes' );
/**
* Create a nicely formatted and more specific title element text for output
* in head of document, based on current view.
*
* @since Twenty Fourteen 1.0
*
* @global int $paged WordPress archive pagination page count.
* @global int $page WordPress paginated post page count.
*
* @param string $title Default title text for current view.
* @param string $sep Optional separator.
* @return string The filtered title.
*/
function twentyfourteen_wp_title( $title, $sep ) {
global $paged, $page;
if ( is_feed() ) {
return $title;
}
// Add the site name.
$title .= get_bloginfo( 'name', 'display' );
// Add the site description for the home/front page.
$site_description = get_bloginfo( 'description', 'display' );
if ( $site_description && ( is_home() || is_front_page() ) ) {
$title = "$title $sep $site_description";
}
// Add a page number if necessary.
if ( ( $paged >= 2 || $page >= 2 ) && ! is_404() ) {
$title = "$title $sep " . sprintf( __( 'Page %s', 'twentyfourteen' ), max( $paged, $page ) );
}
return $title;
}
add_filter( 'wp_title', 'twentyfourteen_wp_title', 10, 2 );
// Implement Custom Header features.
require get_template_directory() . '/inc/custom-header.php';
// Custom template tags for this theme.
require get_template_directory() . '/inc/template-tags.php';
// Add Customizer functionality.
require get_template_directory() . '/inc/customizer.php';
/*
* Add Featured Content functionality.
*
* To overwrite in a plugin, define your own Featured_Content class on or
* before the 'setup_theme' hook.
*/
if ( ! class_exists( 'Featured_Content' ) && 'plugins.php' !== $GLOBALS['pagenow'] ) {
require get_template_directory() . '/inc/featured-content.php';
}