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, see http://codex.wordpress.org/Plugin_API.
21 * @subpackage Twenty_Twelve
22 * @since Twenty Twelve 1.0
26 * Sets up the content width value based on the theme's design and stylesheet.
28 if ( ! isset( $content_width ) )
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, and here
68 * 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 * Adds support for a custom header image.
83 require( get_template_directory() . '/inc/custom-header.php' );
86 * Returns 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. */
100 if ( 'off' !== _x( 'on', 'Open Sans font: on or off', 'twentytwelve' ) ) {
101 $subsets = 'latin,latin-ext';
103 /* translators: To add an additional Open Sans character subset specific to your language, translate
104 this to 'greek', 'cyrillic' or 'vietnamese'. Do not translate into your own language. */
105 $subset = _x( 'no-subset', 'Open Sans font: add new subset (greek, cyrillic, vietnamese)', 'twentytwelve' );
107 if ( 'cyrillic' == $subset )
108 $subsets .= ',cyrillic,cyrillic-ext';
109 elseif ( 'greek' == $subset )
110 $subsets .= ',greek,greek-ext';
111 elseif ( 'vietnamese' == $subset )
112 $subsets .= ',vietnamese';
114 $protocol = is_ssl() ? 'https' : 'http';
116 'family' => 'Open+Sans:400italic,700italic,400,700',
117 'subset' => $subsets,
119 $font_url = add_query_arg( $query_args, "$protocol://fonts.googleapis.com/css" );
126 * Enqueues scripts and styles for front-end.
128 * @since Twenty Twelve 1.0
130 function twentytwelve_scripts_styles() {
134 * Adds JavaScript to pages with the comment form to support
135 * sites with threaded comments (when in use).
137 if ( is_singular() && comments_open() && get_option( 'thread_comments' ) )
138 wp_enqueue_script( 'comment-reply' );
141 * Adds JavaScript for handling the navigation menu hide-and-show behavior.
143 wp_enqueue_script( 'twentytwelve-navigation', get_template_directory_uri() . '/js/navigation.js', array(), '1.0', true );
145 $font_url = twentytwelve_get_font_url();
146 if ( ! empty( $font_url ) )
147 wp_enqueue_style( 'twentytwelve-fonts', esc_url_raw( $font_url ), array(), null );
150 * Loads our main stylesheet.
152 wp_enqueue_style( 'twentytwelve-style', get_stylesheet_uri() );
155 * Loads the Internet Explorer specific stylesheet.
157 wp_enqueue_style( 'twentytwelve-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentytwelve-style' ), '20121010' );
158 $wp_styles->add_data( 'twentytwelve-ie', 'conditional', 'lt IE 9' );
160 add_action( 'wp_enqueue_scripts', 'twentytwelve_scripts_styles' );
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.
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 * Creates a nicely formatted and more specific title element text
189 * for output in head of document, based on current view.
191 * @since Twenty Twelve 1.0
193 * @param string $title Default title text for current view.
194 * @param string $sep Optional separator.
195 * @return string Filtered title.
197 function twentytwelve_wp_title( $title, $sep ) {
198 global $paged, $page;
203 // Add the site name.
204 $title .= get_bloginfo( 'name' );
206 // Add the site description for the home/front page.
207 $site_description = get_bloginfo( 'description', 'display' );
208 if ( $site_description && ( is_home() || is_front_page() ) )
209 $title = "$title $sep $site_description";
211 // Add a page number if necessary.
212 if ( $paged >= 2 || $page >= 2 )
213 $title = "$title $sep " . sprintf( __( 'Page %s', 'twentytwelve' ), max( $paged, $page ) );
217 add_filter( 'wp_title', 'twentytwelve_wp_title', 10, 2 );
220 * Makes our wp_nav_menu() fallback -- wp_page_menu() -- show a home link.
222 * @since Twenty Twelve 1.0
224 function twentytwelve_page_menu_args( $args ) {
225 if ( ! isset( $args['show_home'] ) )
226 $args['show_home'] = true;
229 add_filter( 'wp_page_menu_args', 'twentytwelve_page_menu_args' );
232 * Registers our main widget area and the front page widget areas.
234 * @since Twenty Twelve 1.0
236 function twentytwelve_widgets_init() {
237 register_sidebar( array(
238 'name' => __( 'Main Sidebar', 'twentytwelve' ),
240 'description' => __( 'Appears on posts and pages except the optional Front Page template, which has its own widgets', 'twentytwelve' ),
241 'before_widget' => '<aside id="%1$s" class="widget %2$s">',
242 'after_widget' => '</aside>',
243 'before_title' => '<h3 class="widget-title">',
244 'after_title' => '</h3>',
247 register_sidebar( array(
248 'name' => __( 'First Front Page Widget Area', 'twentytwelve' ),
250 'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
251 'before_widget' => '<aside id="%1$s" class="widget %2$s">',
252 'after_widget' => '</aside>',
253 'before_title' => '<h3 class="widget-title">',
254 'after_title' => '</h3>',
257 register_sidebar( array(
258 'name' => __( 'Second Front Page Widget Area', 'twentytwelve' ),
260 'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
261 'before_widget' => '<aside id="%1$s" class="widget %2$s">',
262 'after_widget' => '</aside>',
263 'before_title' => '<h3 class="widget-title">',
264 'after_title' => '</h3>',
267 add_action( 'widgets_init', 'twentytwelve_widgets_init' );
269 if ( ! function_exists( 'twentytwelve_content_nav' ) ) :
271 * Displays navigation to next/previous pages when applicable.
273 * @since Twenty Twelve 1.0
275 function twentytwelve_content_nav( $html_id ) {
278 $html_id = esc_attr( $html_id );
280 if ( $wp_query->max_num_pages > 1 ) : ?>
281 <nav id="<?php echo $html_id; ?>" class="navigation" role="navigation">
282 <h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>
283 <div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">←</span> Older posts', 'twentytwelve' ) ); ?></div>
284 <div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">→</span>', 'twentytwelve' ) ); ?></div>
285 </nav><!-- #<?php echo $html_id; ?> .navigation -->
290 if ( ! function_exists( 'twentytwelve_comment' ) ) :
292 * Template for comments and pingbacks.
294 * To override this walker in a child theme without modifying the comments template
295 * simply create your own twentytwelve_comment(), and that function will be used instead.
297 * Used as a callback by wp_list_comments() for displaying the comments.
299 * @since Twenty Twelve 1.0
301 function twentytwelve_comment( $comment, $args, $depth ) {
302 $GLOBALS['comment'] = $comment;
303 switch ( $comment->comment_type ) :
306 // Display trackbacks differently than normal comments.
308 <li <?php comment_class(); ?> id="comment-<?php comment_ID(); ?>">
309 <p><?php _e( 'Pingback:', 'twentytwelve' ); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __( '(Edit)', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?></p>
313 // Proceed with normal comments.
316 <li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
317 <article id="comment-<?php comment_ID(); ?>" class="comment">
318 <header class="comment-meta comment-author vcard">
320 echo get_avatar( $comment, 44 );
321 printf( '<cite><b class="fn">%1$s</b> %2$s</cite>',
322 get_comment_author_link(),
323 // If current post author is also comment author, make it known visually.
324 ( $comment->user_id === $post->post_author ) ? '<span>' . __( 'Post author', 'twentytwelve' ) . '</span>' : ''
326 printf( '<a href="%1$s"><time datetime="%2$s">%3$s</time></a>',
327 esc_url( get_comment_link( $comment->comment_ID ) ),
328 get_comment_time( 'c' ),
329 /* translators: 1: date, 2: time */
330 sprintf( __( '%1$s at %2$s', 'twentytwelve' ), get_comment_date(), get_comment_time() )
333 </header><!-- .comment-meta -->
335 <?php if ( '0' == $comment->comment_approved ) : ?>
336 <p class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.', 'twentytwelve' ); ?></p>
339 <section class="comment-content comment">
340 <?php comment_text(); ?>
341 <?php edit_comment_link( __( 'Edit', 'twentytwelve' ), '<p class="edit-link">', '</p>' ); ?>
342 </section><!-- .comment-content -->
345 <?php comment_reply_link( array_merge( $args, array( 'reply_text' => __( 'Reply', 'twentytwelve' ), 'after' => ' <span>↓</span>', 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
346 </div><!-- .reply -->
347 </article><!-- #comment-## -->
350 endswitch; // end comment_type check
354 if ( ! function_exists( 'twentytwelve_entry_meta' ) ) :
356 * Prints HTML with meta information for current post: categories, tags, permalink, author, and date.
358 * Create your own twentytwelve_entry_meta() to override in a child theme.
360 * @since Twenty Twelve 1.0
362 function twentytwelve_entry_meta() {
363 // Translators: used between list items, there is a space after the comma.
364 $categories_list = get_the_category_list( __( ', ', 'twentytwelve' ) );
366 // Translators: used between list items, there is a space after the comma.
367 $tag_list = get_the_tag_list( '', __( ', ', 'twentytwelve' ) );
369 $date = sprintf( '<a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s">%4$s</time></a>',
370 esc_url( get_permalink() ),
371 esc_attr( get_the_time() ),
372 esc_attr( get_the_date( 'c' ) ),
373 esc_html( get_the_date() )
376 $author = sprintf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s" rel="author">%3$s</a></span>',
377 esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
378 esc_attr( sprintf( __( 'View all posts by %s', 'twentytwelve' ), get_the_author() ) ),
382 // Translators: 1 is category, 2 is tag, 3 is the date and 4 is the author's name.
384 $utility_text = __( 'This entry was posted in %1$s and tagged %2$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
385 } elseif ( $categories_list ) {
386 $utility_text = __( 'This entry was posted in %1$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
388 $utility_text = __( 'This entry was posted on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
402 * Extends the default WordPress body class to denote:
403 * 1. Using a full-width layout, when no active widgets in the sidebar
404 * or full-width template.
405 * 2. Front Page template: thumbnail in use and number of sidebars for
407 * 3. White or empty background color to change the layout and spacing.
408 * 4. Custom fonts enabled.
409 * 5. Single or multiple authors.
411 * @since Twenty Twelve 1.0
413 * @param array Existing class values.
414 * @return array Filtered class values.
416 function twentytwelve_body_class( $classes ) {
417 $background_color = get_background_color();
418 $background_image = get_background_image();
420 if ( ! is_active_sidebar( 'sidebar-1' ) || is_page_template( 'page-templates/full-width.php' ) )
421 $classes[] = 'full-width';
423 if ( is_page_template( 'page-templates/front-page.php' ) ) {
424 $classes[] = 'template-front-page';
425 if ( has_post_thumbnail() )
426 $classes[] = 'has-post-thumbnail';
427 if ( is_active_sidebar( 'sidebar-2' ) && is_active_sidebar( 'sidebar-3' ) )
428 $classes[] = 'two-sidebars';
431 if ( empty( $background_image ) ) {
432 if ( empty( $background_color ) )
433 $classes[] = 'custom-background-empty';
434 elseif ( in_array( $background_color, array( 'fff', 'ffffff' ) ) )
435 $classes[] = 'custom-background-white';
438 // Enable custom font class only if the font CSS is queued to load.
439 if ( wp_style_is( 'twentytwelve-fonts', 'queue' ) )
440 $classes[] = 'custom-font-enabled';
442 if ( ! is_multi_author() )
443 $classes[] = 'single-author';
447 add_filter( 'body_class', 'twentytwelve_body_class' );
450 * Adjusts content_width value for full-width and single image attachment
451 * templates, and when there are no active widgets in the sidebar.
453 * @since Twenty Twelve 1.0
455 function twentytwelve_content_width() {
456 if ( is_page_template( 'page-templates/full-width.php' ) || is_attachment() || ! is_active_sidebar( 'sidebar-1' ) ) {
457 global $content_width;
458 $content_width = 960;
461 add_action( 'template_redirect', 'twentytwelve_content_width' );
464 * Add postMessage support for site title and description for the Theme Customizer.
466 * @since Twenty Twelve 1.0
468 * @param WP_Customize_Manager $wp_customize Theme Customizer object.
471 function twentytwelve_customize_register( $wp_customize ) {
472 $wp_customize->get_setting( 'blogname' )->transport = 'postMessage';
473 $wp_customize->get_setting( 'blogdescription' )->transport = 'postMessage';
474 $wp_customize->get_setting( 'header_textcolor' )->transport = 'postMessage';
476 add_action( 'customize_register', 'twentytwelve_customize_register' );
479 * Binds JS handlers to make Theme Customizer preview reload changes asynchronously.
481 * @since Twenty Twelve 1.0
483 function twentytwelve_customize_preview_js() {
484 wp_enqueue_script( 'twentytwelve-customizer', get_template_directory_uri() . '/js/theme-customizer.js', array( 'customize-preview' ), '20130301', true );
486 add_action( 'customize_preview_init', 'twentytwelve_customize_preview_js' );