3 * Twenty Twelve functions and definitions
5 * Sets up the theme and provides some helper functions, which are used
6 * in the theme as custom template tags. Others are attached to action and
7 * filter hooks in WordPress to change core functionality.
9 * When using a child theme (see http://codex.wordpress.org/Theme_Development and
10 * http://codex.wordpress.org/Child_Themes), you can override certain functions
11 * (those wrapped in a function_exists() call) by defining them first in your child theme's
12 * functions.php file. The child theme's functions.php file is included before the parent
13 * theme's file, so the child theme functions would be used.
15 * Functions that are not pluggable (not wrapped in function_exists()) are instead attached
16 * to a filter or action hook.
18 * For more information on hooks, actions, and filters, @link http://codex.wordpress.org/Plugin_API
21 * @subpackage Twenty_Twelve
22 * @since Twenty Twelve 1.0
25 // Set up the content width value based on the theme's design and stylesheet.
26 if ( ! isset( $content_width ) )
30 * Twenty Twelve setup.
32 * Sets up theme defaults and registers the various WordPress features that
33 * Twenty Twelve supports.
35 * @uses load_theme_textdomain() For translation/localization support.
36 * @uses add_editor_style() To add a Visual Editor stylesheet.
37 * @uses add_theme_support() To add support for post thumbnails, automatic feed links,
38 * custom background, and post formats.
39 * @uses register_nav_menu() To add support for navigation menus.
40 * @uses set_post_thumbnail_size() To set a custom post thumbnail size.
42 * @since Twenty Twelve 1.0
44 function twentytwelve_setup() {
46 * Makes Twenty Twelve available for translation.
48 * Translations can be added to the /languages/ directory.
49 * If you're building a theme based on Twenty Twelve, use a find and replace
50 * to change 'twentytwelve' to the name of your theme in all the template files.
52 load_theme_textdomain( 'twentytwelve', get_template_directory() . '/languages' );
54 // This theme styles the visual editor with editor-style.css to match the theme style.
57 // Adds RSS feed links to <head> for posts and comments.
58 add_theme_support( 'automatic-feed-links' );
60 // This theme supports a variety of post formats.
61 add_theme_support( 'post-formats', array( 'aside', 'image', 'link', 'quote', 'status' ) );
63 // This theme uses wp_nav_menu() in one location.
64 register_nav_menu( 'primary', __( 'Primary Menu', 'twentytwelve' ) );
67 * This theme supports custom background color and image,
68 * and here we also set up the default background color.
70 add_theme_support( 'custom-background', array(
71 'default-color' => 'e6e6e6',
74 // This theme uses a custom image size for featured images, displayed on "standard" posts.
75 add_theme_support( 'post-thumbnails' );
76 set_post_thumbnail_size( 624, 9999 ); // Unlimited height, soft crop
78 add_action( 'after_setup_theme', 'twentytwelve_setup' );
81 * Add support for a custom header image.
83 require( get_template_directory() . '/inc/custom-header.php' );
86 * Return the Google font stylesheet URL if available.
88 * The use of Open Sans by default is localized. For languages that use
89 * characters not supported by the font, the font can be disabled.
91 * @since Twenty Twelve 1.2
93 * @return string Font stylesheet or empty string if disabled.
95 function twentytwelve_get_font_url() {
98 /* translators: If there are characters in your language that are not supported
99 * by Open Sans, translate this to 'off'. Do not translate into your own language.
101 if ( 'off' !== _x( 'on', 'Open Sans font: on or off', 'twentytwelve' ) ) {
102 $subsets = 'latin,latin-ext';
104 /* translators: To add an additional Open Sans character subset specific to your language,
105 * translate this to 'greek', 'cyrillic' or 'vietnamese'. Do not translate into your own language.
107 $subset = _x( 'no-subset', 'Open Sans font: add new subset (greek, cyrillic, vietnamese)', 'twentytwelve' );
109 if ( 'cyrillic' == $subset )
110 $subsets .= ',cyrillic,cyrillic-ext';
111 elseif ( 'greek' == $subset )
112 $subsets .= ',greek,greek-ext';
113 elseif ( 'vietnamese' == $subset )
114 $subsets .= ',vietnamese';
116 $protocol = is_ssl() ? 'https' : 'http';
118 'family' => 'Open+Sans:400italic,700italic,400,700',
119 'subset' => $subsets,
121 $font_url = add_query_arg( $query_args, "$protocol://fonts.googleapis.com/css" );
128 * Enqueue scripts and styles for front-end.
130 * @since Twenty Twelve 1.0
134 function twentytwelve_scripts_styles() {
138 * Adds JavaScript to pages with the comment form to support
139 * sites with threaded comments (when in use).
141 if ( is_singular() && comments_open() && get_option( 'thread_comments' ) )
142 wp_enqueue_script( 'comment-reply' );
144 // Adds JavaScript for handling the navigation menu hide-and-show behavior.
145 wp_enqueue_script( 'twentytwelve-navigation', get_template_directory_uri() . '/js/navigation.js', array(), '1.0', true );
147 $font_url = twentytwelve_get_font_url();
148 if ( ! empty( $font_url ) )
149 wp_enqueue_style( 'twentytwelve-fonts', esc_url_raw( $font_url ), array(), null );
151 // Loads our main stylesheet.
152 wp_enqueue_style( 'twentytwelve-style', get_stylesheet_uri() );
154 // Loads the Internet Explorer specific stylesheet.
155 wp_enqueue_style( 'twentytwelve-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentytwelve-style' ), '20121010' );
156 $wp_styles->add_data( 'twentytwelve-ie', 'conditional', 'lt IE 9' );
158 add_action( 'wp_enqueue_scripts', 'twentytwelve_scripts_styles' );
161 * Filter TinyMCE CSS path to include Google Fonts.
163 * Adds additional stylesheets to the TinyMCE editor if needed.
165 * @uses twentytwelve_get_font_url() To get the Google Font stylesheet URL.
167 * @since Twenty Twelve 1.2
169 * @param string $mce_css CSS path to load in TinyMCE.
170 * @return string Filtered CSS path.
172 function twentytwelve_mce_css( $mce_css ) {
173 $font_url = twentytwelve_get_font_url();
175 if ( empty( $font_url ) )
178 if ( ! empty( $mce_css ) )
181 $mce_css .= esc_url_raw( str_replace( ',', '%2C', $font_url ) );
185 add_filter( 'mce_css', 'twentytwelve_mce_css' );
188 * Filter the page title.
190 * Creates a nicely formatted and more specific title element text
191 * for output in head of document, based on current view.
193 * @since Twenty Twelve 1.0
195 * @param string $title Default title text for current view.
196 * @param string $sep Optional separator.
197 * @return string Filtered title.
199 function twentytwelve_wp_title( $title, $sep ) {
200 global $paged, $page;
205 // Add the site name.
206 $title .= get_bloginfo( 'name' );
208 // Add the site description for the home/front page.
209 $site_description = get_bloginfo( 'description', 'display' );
210 if ( $site_description && ( is_home() || is_front_page() ) )
211 $title = "$title $sep $site_description";
213 // Add a page number if necessary.
214 if ( $paged >= 2 || $page >= 2 )
215 $title = "$title $sep " . sprintf( __( 'Page %s', 'twentytwelve' ), max( $paged, $page ) );
219 add_filter( 'wp_title', 'twentytwelve_wp_title', 10, 2 );
222 * Filter the page menu arguments.
224 * Makes our wp_nav_menu() fallback -- wp_page_menu() -- show a home link.
226 * @since Twenty Twelve 1.0
228 function twentytwelve_page_menu_args( $args ) {
229 if ( ! isset( $args['show_home'] ) )
230 $args['show_home'] = true;
233 add_filter( 'wp_page_menu_args', 'twentytwelve_page_menu_args' );
238 * Registers our main widget area and the front page widget areas.
240 * @since Twenty Twelve 1.0
242 function twentytwelve_widgets_init() {
243 register_sidebar( array(
244 'name' => __( 'Main Sidebar', 'twentytwelve' ),
246 'description' => __( 'Appears on posts and pages except the optional Front Page template, which has its own widgets', 'twentytwelve' ),
247 'before_widget' => '<aside id="%1$s" class="widget %2$s">',
248 'after_widget' => '</aside>',
249 'before_title' => '<h3 class="widget-title">',
250 'after_title' => '</h3>',
253 register_sidebar( array(
254 'name' => __( 'First Front Page Widget Area', 'twentytwelve' ),
256 'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
257 'before_widget' => '<aside id="%1$s" class="widget %2$s">',
258 'after_widget' => '</aside>',
259 'before_title' => '<h3 class="widget-title">',
260 'after_title' => '</h3>',
263 register_sidebar( array(
264 'name' => __( 'Second Front Page Widget Area', 'twentytwelve' ),
266 'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
267 'before_widget' => '<aside id="%1$s" class="widget %2$s">',
268 'after_widget' => '</aside>',
269 'before_title' => '<h3 class="widget-title">',
270 'after_title' => '</h3>',
273 add_action( 'widgets_init', 'twentytwelve_widgets_init' );
275 if ( ! function_exists( 'twentytwelve_content_nav' ) ) :
277 * Displays navigation to next/previous pages when applicable.
279 * @since Twenty Twelve 1.0
281 function twentytwelve_content_nav( $html_id ) {
284 $html_id = esc_attr( $html_id );
286 if ( $wp_query->max_num_pages > 1 ) : ?>
287 <nav id="<?php echo $html_id; ?>" class="navigation" role="navigation">
288 <h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>
289 <div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">←</span> Older posts', 'twentytwelve' ) ); ?></div>
290 <div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">→</span>', 'twentytwelve' ) ); ?></div>
291 </nav><!-- #<?php echo $html_id; ?> .navigation -->
296 if ( ! function_exists( 'twentytwelve_comment' ) ) :
298 * Template for comments and pingbacks.
300 * To override this walker in a child theme without modifying the comments template
301 * simply create your own twentytwelve_comment(), and that function will be used instead.
303 * Used as a callback by wp_list_comments() for displaying the comments.
305 * @since Twenty Twelve 1.0
309 function twentytwelve_comment( $comment, $args, $depth ) {
310 $GLOBALS['comment'] = $comment;
311 switch ( $comment->comment_type ) :
314 // Display trackbacks differently than normal comments.
316 <li <?php comment_class(); ?> id="comment-<?php comment_ID(); ?>">
317 <p><?php _e( 'Pingback:', 'twentytwelve' ); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __( '(Edit)', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?></p>
321 // Proceed with normal comments.
324 <li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
325 <article id="comment-<?php comment_ID(); ?>" class="comment">
326 <header class="comment-meta comment-author vcard">
328 echo get_avatar( $comment, 44 );
329 printf( '<cite><b class="fn">%1$s</b> %2$s</cite>',
330 get_comment_author_link(),
331 // If current post author is also comment author, make it known visually.
332 ( $comment->user_id === $post->post_author ) ? '<span>' . __( 'Post author', 'twentytwelve' ) . '</span>' : ''
334 printf( '<a href="%1$s"><time datetime="%2$s">%3$s</time></a>',
335 esc_url( get_comment_link( $comment->comment_ID ) ),
336 get_comment_time( 'c' ),
337 /* translators: 1: date, 2: time */
338 sprintf( __( '%1$s at %2$s', 'twentytwelve' ), get_comment_date(), get_comment_time() )
341 </header><!-- .comment-meta -->
343 <?php if ( '0' == $comment->comment_approved ) : ?>
344 <p class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.', 'twentytwelve' ); ?></p>
347 <section class="comment-content comment">
348 <?php comment_text(); ?>
349 <?php edit_comment_link( __( 'Edit', 'twentytwelve' ), '<p class="edit-link">', '</p>' ); ?>
350 </section><!-- .comment-content -->
353 <?php comment_reply_link( array_merge( $args, array( 'reply_text' => __( 'Reply', 'twentytwelve' ), 'after' => ' <span>↓</span>', 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
354 </div><!-- .reply -->
355 </article><!-- #comment-## -->
358 endswitch; // end comment_type check
362 if ( ! function_exists( 'twentytwelve_entry_meta' ) ) :
364 * Set up post entry meta.
366 * Prints HTML with meta information for current post: categories, tags, permalink, author, and date.
368 * Create your own twentytwelve_entry_meta() to override in a child theme.
370 * @since Twenty Twelve 1.0
374 function twentytwelve_entry_meta() {
375 // Translators: used between list items, there is a space after the comma.
376 $categories_list = get_the_category_list( __( ', ', 'twentytwelve' ) );
378 // Translators: used between list items, there is a space after the comma.
379 $tag_list = get_the_tag_list( '', __( ', ', 'twentytwelve' ) );
381 $date = sprintf( '<a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s">%4$s</time></a>',
382 esc_url( get_permalink() ),
383 esc_attr( get_the_time() ),
384 esc_attr( get_the_date( 'c' ) ),
385 esc_html( get_the_date() )
388 $author = sprintf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s" rel="author">%3$s</a></span>',
389 esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
390 esc_attr( sprintf( __( 'View all posts by %s', 'twentytwelve' ), get_the_author() ) ),
394 // Translators: 1 is category, 2 is tag, 3 is the date and 4 is the author's name.
396 $utility_text = __( 'This entry was posted in %1$s and tagged %2$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
397 } elseif ( $categories_list ) {
398 $utility_text = __( 'This entry was posted in %1$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
400 $utility_text = __( 'This entry was posted on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
414 * Extend the default WordPress body classes.
416 * Extends the default WordPress body class to denote:
417 * 1. Using a full-width layout, when no active widgets in the sidebar
418 * or full-width template.
419 * 2. Front Page template: thumbnail in use and number of sidebars for
421 * 3. White or empty background color to change the layout and spacing.
422 * 4. Custom fonts enabled.
423 * 5. Single or multiple authors.
425 * @since Twenty Twelve 1.0
427 * @param array $classes Existing class values.
428 * @return array Filtered class values.
430 function twentytwelve_body_class( $classes ) {
431 $background_color = get_background_color();
432 $background_image = get_background_image();
434 if ( ! is_active_sidebar( 'sidebar-1' ) || is_page_template( 'page-templates/full-width.php' ) )
435 $classes[] = 'full-width';
437 if ( is_page_template( 'page-templates/front-page.php' ) ) {
438 $classes[] = 'template-front-page';
439 if ( has_post_thumbnail() )
440 $classes[] = 'has-post-thumbnail';
441 if ( is_active_sidebar( 'sidebar-2' ) && is_active_sidebar( 'sidebar-3' ) )
442 $classes[] = 'two-sidebars';
445 if ( empty( $background_image ) ) {
446 if ( empty( $background_color ) )
447 $classes[] = 'custom-background-empty';
448 elseif ( in_array( $background_color, array( 'fff', 'ffffff' ) ) )
449 $classes[] = 'custom-background-white';
452 // Enable custom font class only if the font CSS is queued to load.
453 if ( wp_style_is( 'twentytwelve-fonts', 'queue' ) )
454 $classes[] = 'custom-font-enabled';
456 if ( ! is_multi_author() )
457 $classes[] = 'single-author';
461 add_filter( 'body_class', 'twentytwelve_body_class' );
464 * Adjust content width in certain contexts.
466 * Adjusts content_width value for full-width and single image attachment
467 * templates, and when there are no active widgets in the sidebar.
469 * @since Twenty Twelve 1.0
473 function twentytwelve_content_width() {
474 if ( is_page_template( 'page-templates/full-width.php' ) || is_attachment() || ! is_active_sidebar( 'sidebar-1' ) ) {
475 global $content_width;
476 $content_width = 960;
479 add_action( 'template_redirect', 'twentytwelve_content_width' );
482 * Register postMessage support.
484 * Add postMessage support for site title and description for the Customizer.
486 * @since Twenty Twelve 1.0
488 * @param WP_Customize_Manager $wp_customize Customizer object.
491 function twentytwelve_customize_register( $wp_customize ) {
492 $wp_customize->get_setting( 'blogname' )->transport = 'postMessage';
493 $wp_customize->get_setting( 'blogdescription' )->transport = 'postMessage';
494 $wp_customize->get_setting( 'header_textcolor' )->transport = 'postMessage';
496 add_action( 'customize_register', 'twentytwelve_customize_register' );
499 * Enqueue Javascript postMessage handlers for the Customizer.
501 * Binds JS handlers to make the Customizer preview reload changes asynchronously.
503 * @since Twenty Twelve 1.0
507 function twentytwelve_customize_preview_js() {
508 wp_enqueue_script( 'twentytwelve-customizer', get_template_directory_uri() . '/js/theme-customizer.js', array( 'customize-preview' ), '20130301', true );
510 add_action( 'customize_preview_init', 'twentytwelve_customize_preview_js' );