WordPress/wp-content/themes/twentytwelve/functions.php

342 lines
11 KiB
PHP

<?php
/**
* Twenty Twelve functions and definitions
*
* Sets up the theme and provides some helper functions. Some helper functions
* are used in the theme as custom template tags. Others are attached to action and
* filter hooks in WordPress to change core functionality.
*
* The first function, twentytwelve_setup(), sets up the theme by registering support
* for various features in WordPress, such as a custom background and a navigation menu.
*
* When using a child theme (see http://codex.wordpress.org/Theme_Development and
* http://codex.wordpress.org/Child_Themes), 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.
*
* 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, see http://codex.wordpress.org/Plugin_API.
*
* @package WordPress
* @subpackage Twenty_Twelve
* @since Twenty Twelve 1.0
*/
/**
* Set the content width based on the theme's design and stylesheet.
*/
if ( ! isset( $content_width ) )
$content_width = 584;
/**
* Tell WordPress to run twentytwelve_setup() when the 'after_setup_theme' hook is run.
*/
add_action( 'after_setup_theme', 'twentytwelve_setup' );
if ( ! function_exists( 'twentytwelve_setup' ) ) :
/**
* Sets up theme defaults and registers support for various WordPress features.
*
* @uses load_theme_textdomain() For translation/localization support.
* @uses add_theme_support() To add support for automatic feed links.
* @uses register_nav_menu() To add support for navigation menus.
* @uses add_custom_background() To add support for a custom background.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_setup() {
/**
* Make Twenty Twelve available for translation.
* Translations can be added to the /languages/ directory.
* If you're building a theme based on Twenty Twelve, use a find and replace
* to change 'twentytwelve' to the name of your theme in all the template files.
*/
load_theme_textdomain( 'twentytwelve', get_template_directory() . '/languages' );
// Add default posts and comments RSS feed links to <head>.
add_theme_support( 'automatic-feed-links' );
// Add support for a variety of post formats
add_theme_support( 'post-formats', array( 'aside', 'image', 'link', 'quote' ) );
// This theme uses wp_nav_menu() in one location.
register_nav_menu( 'primary', __( 'Primary Menu', 'twentytwelve' ) );
// Add support for custom background.
add_custom_background();
// Add support for a custom header image.
$header_args = array(
'random-default' => true,
'flex-height' => true,
'suggested-height' => apply_filters( 'twentytwelve_header_image_height', 250 ),
'flex-width' => true,
'max-width' => apply_filters( 'twentytwelve_header_image_max_width', 2000 ),
'suggested-width' => apply_filters( 'twentytwelve_header_image_width', 960 ),
);
add_theme_support( 'custom-header', $header_args );
add_custom_image_header( 'twentytwelve_header_style', 'twentytwelve_admin_header_style', 'twentytwelve_admin_header_image' );
// The default header text color
define( 'HEADER_TEXTCOLOR', '444' );
}
endif;
if ( ! function_exists( 'twentytwelve_header_style' ) ) :
/**
* Styles the header image and text displayed on the blog
*
* get_header_textcolor() options: HEADER_TEXTCOLOR is default, hide text (returns 'blank'), or any hex value
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_header_style() {
// If no custom options for text are set, let's bail
if ( HEADER_TEXTCOLOR == get_header_textcolor() )
return;
// If we get this far, we have custom styles.
?>
<style type="text/css">
<?php
// Has the text been hidden?
if ( 'blank' == get_header_textcolor() ) :
?>
.site-title,
.site-description {
position: absolute !important;
clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
clip: rect(1px, 1px, 1px, 1px);
}
<?php
// If the user has set a custom color for the text, use that.
else :
?>
.site-title a,
.site-description {
color: #<?php echo get_header_textcolor(); ?> !important;
}
<?php endif; ?>
</style>
<?php
}
endif;
if ( ! function_exists( 'twentytwelve_admin_header_style' ) ) :
/**
* Styles the header image displayed on the Appearance > Header admin panel.
*
* Referenced via add_custom_image_header() in twentytwelve_setup().
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_admin_header_style() {
?>
<style type="text/css">
.appearance_page_custom-header #headimg {
border: none;
}
#headimg h1,
#headimg h2 {
line-height: 1.6;
margin: 0;
padding: 0;
}
#headimg h1 {
font-size: 30px;
}
#headimg h1 a {
text-decoration: none;
}
#headimg h2 {
font: normal 13px/1.8 "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", sans-serif;
margin-bottom: 24px;
}
#headimg img {
}
</style>
<?php
}
endif;
if ( ! function_exists( 'twentytwelve_admin_header_image' ) ) :
/**
* Custom header image markup displayed on the Appearance > Header admin panel.
*
* Referenced via add_custom_image_header() in twentytwelve_setup().
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_admin_header_image() { ?>
<div id="headimg">
<?php
if ( 'blank' == get_theme_mod( 'header_textcolor', HEADER_TEXTCOLOR ) || '' == get_theme_mod( 'header_textcolor', HEADER_TEXTCOLOR ) )
$style = ' style="display:none;"';
else
$style = ' style="color:#' . get_theme_mod( 'header_textcolor', HEADER_TEXTCOLOR ) . ';"';
?>
<h1><a id="name"<?php echo $style; ?> onclick="return false;" href="<?php echo esc_url( home_url( '/' ) ); ?>"><?php bloginfo( 'name' ); ?></a></h1>
<h2 id="desc"<?php echo $style; ?>><?php bloginfo( 'description' ); ?></h2>
<?php $header_image = get_header_image();
if ( ! empty( $header_image ) ) : ?>
<img src="<?php echo esc_url( $header_image ); ?>" alt="" />
<?php endif; ?>
</div>
<?php }
endif;
/**
* Enqueue script for handling navigation.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_scripts() {
wp_enqueue_script( 'jquery' );
wp_enqueue_script( 'navigation', get_template_directory_uri() . '/js/navigation.js', 'jquery', '20120227', true );
}
add_action( 'wp_enqueue_scripts', 'twentytwelve_scripts' );
/**
* Get our wp_nav_menu() fallback, wp_page_menu(), to show a home link.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_page_menu_args( $args ) {
$args['show_home'] = true;
return $args;
}
add_filter( 'wp_page_menu_args', 'twentytwelve_page_menu_args' );
/**
* Register our single widget area.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_widgets_init() {
register_sidebar( array(
'name' => __( 'Main Sidebar', 'twentytwelve' ),
'id' => 'sidebar-1',
'before_widget' => '<aside id="%1$s" class="widget %2$s">',
'after_widget' => "</aside>",
'before_title' => '<h3 class="widget-title">',
'after_title' => '</h3>',
) );
}
add_action( 'widgets_init', 'twentytwelve_widgets_init' );
if ( ! function_exists( 'twentytwelve_content_nav' ) ) :
/**
* Display navigation to next/previous pages when applicable
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_content_nav( $nav_id ) {
global $wp_query;
if ( $wp_query->max_num_pages > 1 ) : ?>
<nav id="<?php echo $nav_id; ?>" role="navigation">
<h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>
<div class="nav-previous alignleft"><?php next_posts_link( __( '<span class="meta-nav">&larr;</span> Older posts', 'twentytwelve' ) ); ?></div>
<div class="nav-next alignright"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">&rarr;</span>', 'twentytwelve' ) ); ?></div>
</nav><!-- #nav-above -->
<?php endif;
}
endif;
if ( ! function_exists( 'twentytwelve_comment' ) ) :
/**
* Template for comments and pingbacks.
*
* To override this walker in a child theme without modifying the comments template
* simply create your own twentytwelve_comment(), and that function will be used instead.
*
* Used as a callback by wp_list_comments() for displaying the comments.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_comment( $comment, $args, $depth ) {
$GLOBALS['comment'] = $comment;
switch ( $comment->comment_type ) :
case 'pingback' :
case 'trackback' :
// Display trackbacks differently than normal comments.
?>
<li <?php comment_class(); ?> id="comment-<?php comment_ID(); ?>">
<p><?php _e( 'Pingback:', 'twentytwelve' ); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __( '(Edit)', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?></p>
<?php
break;
default :
// Proceed with normal comments.
?>
<li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
<article id="comment-<?php comment_ID(); ?>" class="comment">
<header class="comment-meta comment-author vcard">
<?php
echo get_avatar( $comment, 44 );
printf( '<cite class="fn">%s</cite>', get_comment_author_link() );
printf( '<a href="%1$s"><time pubdate datetime="%2$s">%3$s</time></a>',
esc_url( get_comment_link( $comment->comment_ID ) ),
get_comment_time( 'c' ),
/* translators: 1: date, 2: time */
sprintf( __( '%1$s at %2$s', 'twentytwelve' ), get_comment_date(), get_comment_time() )
);
?>
<?php edit_comment_link( __( 'Edit', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?>
</header>
<?php if ( '0' == $comment->comment_approved ) : ?>
<p class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.', 'twentytwelve' ); ?></p>
<?php endif; ?>
<section class="comment post-content">
<?php comment_text(); ?>
</section>
<div class="reply">
<?php comment_reply_link( array_merge( $args, array( 'reply_text' => __( 'Reply <span>&darr;</span>', 'twentytwelve' ), 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
</div><!-- .reply -->
</article><!-- #comment-## -->
<?php
break;
endswitch; // end comment_type check
}
endif;
if ( ! function_exists( 'twentytwelve_posted_on' ) ) :
/**
* Prints HTML with meta information for the current post-date/time and author.
*
* Create your own twentytwelve_posted_on() to override in a child theme.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_posted_on() {
printf( __( '<span class="sep">Posted on </span><a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s" pubdate>%4$s</time></a><span class="by-author"> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%5$s" title="%6$s" rel="author">%7$s</a></span></span>', 'twentytwelve' ),
esc_url( get_permalink() ),
esc_attr( get_the_time() ),
esc_attr( get_the_date( 'c' ) ),
esc_html( get_the_date() ),
esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
esc_attr( sprintf( __( 'View all posts by %s', 'twentytwelve' ), get_the_author() ) ),
get_the_author()
);
}
endif;
/**
* Extends the default WordPress body class to denote a full-width layout.
*
* Used in two cases: no active widgets in sidebar, and full-width page template.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_body_class( $classes ) {
if ( ! is_active_sidebar( 'sidebar-1' ) || is_page_template( 'full-width' ) )
$classes[] = 'full-width';
return $classes;
}
add_filter( 'body_class', 'twentytwelve_body_class' );