482 lines
15 KiB
PHP
482 lines
15 KiB
PHP
<?php
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/**
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* Twenty Fourteen functions and definitions.
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*
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* Sets up the theme and provides some helper functions, which are used in the
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* theme as custom template tags. Others are attached to action and filter
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* hooks in WordPress to change core functionality.
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*
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* When using a child theme (see http://codex.wordpress.org/Theme_Development
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* and http://codex.wordpress.org/Child_Themes), you can override certain
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* functions (those wrapped in a function_exists() call) by defining them first
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* in your child theme's functions.php file. The child theme's functions.php
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* file is included before the parent theme's file, so the child theme
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* functions would be used.
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*
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* Functions that are not pluggable (not wrapped in function_exists()) are
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* instead attached to a filter or action hook.
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*
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* For more information on hooks, actions, and filters,
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* see http://codex.wordpress.org/Plugin_API
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*
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* @package WordPress
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* @subpackage Twenty_Fourteen
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*/
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/**
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* Sets up the content width value based on the theme's design.
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* @see twentyfourteen_content_width() for template-specific adjustments.
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*/
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if ( ! isset( $content_width ) )
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$content_width = 474;
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if ( ! function_exists( 'twentyfourteen_setup' ) ) :
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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 post thumbnails.
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*/
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function twentyfourteen_setup() {
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/*
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* Makes Twenty Fourteen available for translation.
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*
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* Translations can be added to the /languages/ directory.
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* If you're building a theme based on Twenty Fourteen, use a find and
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* replace to change 'twentyfourteen' to the name of your theme in all
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* template files.
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*/
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load_theme_textdomain( 'twentyfourteen', get_template_directory() . '/languages' );
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/*
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* This theme styles the visual editor to resemble the theme style.
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*/
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add_editor_style( array( 'editor-style.css', twentyfourteen_font_url() ) );
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// Adds RSS feed links to <head> for posts and comments.
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add_theme_support( 'automatic-feed-links' );
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// Enable support for Post Thumbnails.
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add_theme_support( 'post-thumbnails', array( 'post' ) );
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// Adding several sizes for Post Thumbnails.
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add_image_size( 'featured-thumbnail-large', 672, 0 );
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add_image_size( 'featured-thumbnail-featured', 672, 336, true );
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add_image_size( 'featured-thumbnail-formatted', 306, 0 );
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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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'primary' => __( 'Top primary menu', 'twentyfourteen' ),
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'secondary' => __( 'Secondary menu in left sidebar', 'twentyfourteen' ),
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) );
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/*
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* Switches 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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'search-form', 'comment-form', 'comment-list',
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) );
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/*
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* Enable support for Post Formats.
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* See http://codex.wordpress.org/Post_Formats
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*/
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add_theme_support( 'post-formats', array(
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'aside', 'image', 'video', 'quote', 'link', 'gallery',
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) );
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/*
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* This theme allows users to set a custom background.
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*/
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add_theme_support( 'custom-background', apply_filters( 'twentyfourteen_custom_background_args', array(
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'default-color' => 'f5f5f5',
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) ) );
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}
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endif; // twentyfourteen_setup
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add_action( 'after_setup_theme', 'twentyfourteen_setup' );
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/**
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* Adjusts content_width value for full width and attachment templates.
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*
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* @return void
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*/
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function twentyfourteen_content_width() {
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if ( is_page_template( 'full-width-page.php' ) || is_attachment() )
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$GLOBALS['content_width'] = 895;
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}
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add_action( 'template_redirect', 'twentyfourteen_content_width' );
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/**
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* Getter function for Featured Content Plugin.
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*/
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function twentyfourteen_get_featured_posts() {
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return apply_filters( 'twentyfourteen_get_featured_posts', false );
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}
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/**
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* A helper conditional function that returns a boolean value
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* So that we can use a condition like
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* if ( twentyfourteen_has_featured_posts( 1 ) )
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*/
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function twentyfourteen_has_featured_posts( $minimum = 1 ) {
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if ( is_paged() )
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return false;
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$featured_posts = apply_filters( 'twentyfourteen_get_featured_posts', array() );
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return is_array( $featured_posts ) && count( $featured_posts ) > absint( $minimum );
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}
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/**
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* Registers two widget areas.
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*
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* @return void
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*/
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function twentyfourteen_widgets_init() {
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require get_template_directory() . '/inc/widgets.php';
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register_widget( 'Twenty_Fourteen_Ephemera_Widget' );
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register_sidebar( array(
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'name' => __( 'Primary Sidebar', 'twentyfourteen' ),
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'id' => 'sidebar-1',
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'description' => __( 'Main sidebar that appears on the left.', 'twentyfourteen' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => '</aside>',
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'before_title' => '<h1 class="widget-title">',
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'after_title' => '</h1>',
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) );
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register_sidebar( array(
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'name' => __( 'Front Page Sidebar', 'twentyfourteen' ),
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'id' => 'sidebar-2',
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'description' => __( 'Additional sidebar that appears on the right, on the home page.', 'twentyfourteen' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => '</aside>',
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'before_title' => '<h1 class="widget-title">',
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'after_title' => '</h1>',
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) );
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register_sidebar( array(
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'name' => __( 'Content Sidebar', 'twentyfourteen' ),
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'id' => 'sidebar-3',
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'description' => __( 'Additional sidebar that appears on the right, on single posts and pages.', 'twentyfourteen' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => '</aside>',
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'before_title' => '<h1 class="widget-title">',
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'after_title' => '</h1>',
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) );
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register_sidebar( array(
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'name' => __( 'Footer Widget Area', 'twentyfourteen' ),
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'id' => 'sidebar-4',
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'description' => __( 'Appears in the footer section of the site.', 'twentyfourteen' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => '</aside>',
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'before_title' => '<h1 class="widget-title">',
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'after_title' => '</h1>',
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) );
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}
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add_action( 'widgets_init', 'twentyfourteen_widgets_init' );
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/**
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* Register Lato Google font for Twenty Fourteen.
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*
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* @return void
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*/
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function twentyfourteen_font_url() {
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$font_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 Lato, translate this to 'off'. Do not translate into your own language.
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*/
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if ( 'off' !== _x( 'on', 'Lato font: on or off', 'twentyfourteen' ) )
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$font_url = add_query_arg( 'family', urlencode( 'Lato:100,300,400,700,900,100italic,300italic,400italic,700italic,900italic' ), "//fonts.googleapis.com/css" );
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return $font_url;
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}
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/**
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* Enqueues scripts and styles for front end.
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*
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* @return void
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*/
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function twentyfourteen_scripts() {
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// Add Lato font, used in the main stylesheet.
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wp_enqueue_style( 'twentyfourteen-lato' );
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// Add Genericons font, used in the main stylesheet.
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wp_enqueue_style( 'twentyfourteen-genericons', get_template_directory_uri() . '/fonts/genericons.css', array(), '2.09' );
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// Loads our main stylesheet.
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wp_enqueue_style( 'twentyfourteen-style', get_stylesheet_uri() );
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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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if ( is_singular() && wp_attachment_is_image() )
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wp_enqueue_script( 'twentyfourteen-keyboard-image-navigation', get_template_directory_uri() . '/js/keyboard-image-navigation.js', array( 'jquery' ), '20130402' );
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if ( is_active_sidebar( 'sidebar-3' ) )
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wp_enqueue_script( 'jquery-masonry' );
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wp_enqueue_script( 'twentyfourteen-theme', get_template_directory_uri() . '/js/theme.js', array( 'jquery' ), '20130820', true );
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// Add Lato font used in the main stylesheet.
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wp_enqueue_style( 'twentyfourteen-lato', twentyfourteen_font_url(), array(), null );
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}
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add_action( 'wp_enqueue_scripts', 'twentyfourteen_scripts' );
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/**
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* Enqueue Google fonts style to admin screen for custom header display.
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*
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* @return void
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*/
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function twentyfourteen_admin_fonts() {
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wp_enqueue_style( 'twentyfourteen-lato' );
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}
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add_action( 'admin_print_scripts-appearance_page_custom-header', 'twentyfourteen_admin_fonts' );
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/**
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* Sets the post excerpt length to 20 words.
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*
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* @param int $length
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* @return int
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*/
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function twentyfourteen_excerpt_length( $length ) {
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return 20;
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}
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add_filter( 'excerpt_length', 'twentyfourteen_excerpt_length' );
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/**
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* Returns a "Continue Reading" link for excerpts
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*
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* @return string
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*/
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function twentyfourteen_continue_reading_link() {
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return ' <a href="'. esc_url( get_permalink() ) . '" class="more-link">' . __( 'Read More <span class="meta-nav">→</span>', 'twentyfourteen' ) . '</a>';
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}
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/**
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* Replaces "[...]" (appended to automatically generated excerpts) with an
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* ellipsis and twentyeleven_continue_reading_link().
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*
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* @param string $more
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* @return string
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*/
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function twentyfourteen_auto_excerpt_more( $more ) {
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return ' …' . twentyfourteen_continue_reading_link();
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}
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add_filter( 'excerpt_more', 'twentyfourteen_auto_excerpt_more' );
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/**
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* Adds a pretty "Continue Reading" link to custom post excerpts.
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*
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* To override this link in a child theme, remove the filter and add your own
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* function tied to the get_the_excerpt filter hook.
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*
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* @param string $output
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* @return string
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*/
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function twentyfourteen_custom_excerpt_more( $output ) {
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if ( has_excerpt() && ! is_attachment() ) {
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$output .= twentyfourteen_continue_reading_link();
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}
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return $output;
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}
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add_filter( 'get_the_excerpt', 'twentyfourteen_custom_excerpt_more' );
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if ( ! function_exists( 'twentyfourteen_the_attached_image' ) ) :
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/**
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* Prints the attached image with a link to the next attached image.
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*
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* @return void
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*/
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function twentyfourteen_the_attached_image() {
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$post = get_post();
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$attachment_size = apply_filters( 'twentyfourteen_attachment_size', array( 1200, 1200 ) );
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$next_attachment_url = wp_get_attachment_url();
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/**
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* Grab the IDs of all the image attachments in a gallery so we can get the URL
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* of the next adjacent image in a gallery, or the first image (if we're
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* looking at the last image in a gallery), or, in a gallery of one, just the
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* link to that image file.
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*/
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$attachment_ids = get_posts( array(
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'post_parent' => $post->post_parent,
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'fields' => 'ids',
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'numberposts' => -1,
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'post_status' => 'inherit',
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'post_type' => 'attachment',
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'post_mime_type' => 'image',
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'order' => 'ASC',
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'orderby' => 'menu_order ID',
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) );
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// If there is more than 1 attachment in a gallery...
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if ( count( $attachment_ids ) > 1 ) {
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foreach ( $attachment_ids as $attachment_id ) {
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if ( $attachment_id == $post->ID ) {
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$next_id = current( $attachment_ids );
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break;
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}
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}
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// get the URL of the next image attachment...
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if ( $next_id )
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$next_attachment_url = get_attachment_link( $next_id );
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// or get the URL of the first image attachment.
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else
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$next_attachment_url = get_attachment_link( array_shift( $attachment_ids ) );
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}
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printf( '<a href="%1$s" title="%2$s" rel="attachment">%3$s</a>',
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esc_url( $next_attachment_url ),
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the_title_attribute( array( 'echo' => false ) ),
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wp_get_attachment_image( $post->ID, $attachment_size )
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);
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}
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endif;
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/**
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* Gets recent formatted posts that are not featured in FC plugin.
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*
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*/
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function twentyfourteen_get_recent( $post_format ) {
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$args = array(
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'order' => 'DESC',
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'ignore_sticky_posts' => 1,
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'posts_per_page' => 2,
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'tax_query' => array(
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array(
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'taxonomy' => 'post_format',
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'terms' => array( $post_format ),
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'field' => 'slug',
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'operator' => 'IN',
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),
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),
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'no_found_rows' => true,
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);
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$featured_posts = twentyfourteen_get_featured_posts();
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if ( is_array( $featured_posts ) && ! empty( $featured_posts ) )
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$args['post__not_in'] = wp_list_pluck( $featured_posts, 'ID' );
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return new WP_Query( $args );
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}
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/**
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* Filter the home page posts, and remove formatted posts visible in the sidebar from it
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*
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*/
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function twentyfourteen_pre_get_posts( $query ) {
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// Bail if not home, not a query, not main query.
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if ( ! $query->is_main_query() || is_admin() )
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return;
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// Only on the home page
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if ( $query->is_home() ) {
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$exclude_ids = array();
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$videos = twentyfourteen_get_recent( 'post-format-video' );
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$images = twentyfourteen_get_recent( 'post-format-image' );
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$galleries = twentyfourteen_get_recent( 'post-format-gallery' );
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$asides = twentyfourteen_get_recent( 'post-format-aside' );
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$links = twentyfourteen_get_recent( 'post-format-link' );
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$quotes = twentyfourteen_get_recent( 'post-format-quote' );
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foreach ( $videos->posts as $post )
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$exclude_ids[] = $post->ID;
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foreach ( $images->posts as $post )
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$exclude_ids[] = $post->ID;
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foreach ( $galleries->posts as $post )
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$exclude_ids[] = $post->ID;
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foreach ( $asides->posts as $post )
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$exclude_ids[] = $post->ID;
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foreach ( $links->posts as $post )
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$exclude_ids[] = $post->ID;
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foreach ( $quotes->posts as $post )
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$exclude_ids[] = $post->ID;
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$query->set( 'post__not_in', $exclude_ids );
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}
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}
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add_action( 'pre_get_posts', 'twentyfourteen_pre_get_posts' );
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/**
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* Extends the default WordPress body classes.
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*
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* Adds body classes to denote:
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* 1. Single or multiple authors.
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* 2. Index views.
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*
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* @param array $classes A list of existing body class values.
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* @return array The filtered body class list.
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*/
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function twentyfourteen_body_classes( $classes ) {
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// Adds a class of group-blog to blogs with more than 1 published author
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if ( is_multi_author() ) {
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$classes[] = 'group-blog';
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}
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if ( is_archive() || is_search() || is_home() ) {
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$classes[] = 'list-view';
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}
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return $classes;
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}
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add_filter( 'body_class', 'twentyfourteen_body_classes' );
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/**
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* Creates a nicely formatted and more specific title element text for output
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* in head of document, based on current view.
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*
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* @param string $title Default title text for current view.
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* @param string $sep Optional separator.
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* @return string The filtered title.
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*/
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function twentyfourteen_wp_title( $title, $sep ) {
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global $paged, $page;
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if ( is_feed() )
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return $title;
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// Add the site name.
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$title .= get_bloginfo( 'name' );
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// Add the site description for the home/front page.
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$site_description = get_bloginfo( 'description', 'display' );
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if ( $site_description && ( is_home() || is_front_page() ) )
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$title = "$title $sep $site_description";
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// Add a page number if necessary.
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if ( $paged >= 2 || $page >= 2 )
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$title = "$title $sep " . sprintf( __( 'Page %s', 'twentyfourteen' ), max( $paged, $page ) );
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return $title;
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}
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add_filter( 'wp_title', 'twentyfourteen_wp_title', 10, 2 );
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/**
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* Implement the Custom Header feature
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*
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*/
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require get_template_directory() . '/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_template_directory() . '/inc/template-tags.php';
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/**
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* Customizer additions
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*/
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require get_template_directory() . '/inc/customizer.php';
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