کد PHP:
<?php
/**
* Twenty Eleven 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, twentyeleven_setup(), sets up the theme by registering support
* for various features in WordPress, such as post thumbnails, navigation menus, and the like.
*
* 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. The hook can be removed by using remove_action() or
* remove_filter() and you can attach your own function to the hook.
*
* We can remove the parent theme's hook only after it is attached, which means we need to
* wait until setting up the child theme:
*
* <code>
* add_action( 'after_setup_theme', 'my_child_theme_setup' );
* function my_child_theme_setup() {
* // We are providing our own filter for excerpt_length (or using the unfiltered value)
* remove_filter( 'excerpt_length', 'twentyeleven_excerpt_length' );
* ...
* }
* </code>
*
* For more information on hooks, actions, and filters, see http://codex.wordpress.org/Plugin_API.
*
* @package WordPress
* @subpackage Twenty_Eleven
* @since Twenty Eleven 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 twentyeleven_setup() when the 'after_setup_theme' hook is run.
*/
add_action( 'after_setup_theme', 'twentyeleven_setup' );
if ( ! function_exists( 'twentyeleven_setup' ) ):
/**
* Sets 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.
*
* To override twentyeleven_setup() in a child theme, add your own twentyeleven_setup to your child theme's
* functions.php file.
*
* @uses load_theme_textdomain() For translation/localization support.
* @uses add_editor_style() To style the visual editor.
* @uses add_theme_support() To add support for post thumbnails, automatic feed links, custom headers
* and backgrounds, and post formats.
* @uses register_nav_menus() To add support for navigation menus.
* @uses register_default_headers() To register the default custom header images provided with the theme.
* @uses set_post_thumbnail_size() To set a custom post thumbnail size.
*
* @since Twenty Eleven 1.0
*/
function twentyeleven_setup() {
/* Make Twenty Eleven available for translation.
* Translations can be added to the /languages/ directory.
* If you're building a theme based on Twenty Eleven, use a find and replace
* to change 'twentyeleven' to the name of your theme in all the template files.
*/
load_theme_textdomain( 'twentyeleven', get_template_directory() . '/languages' );
// This theme styles the visual editor with editor-style.css to match the theme style.
add_editor_style();
// Load up our theme options page and related code.
require( get_template_directory() . '/inc/theme-options.php' );
// Grab Twenty Eleven's Ephemera widget.
require( get_template_directory() . '/inc/widgets.php' );
// Add default posts and comments RSS feed links to <head>.
add_theme_support( 'automatic-feed-links' );
// This theme uses wp_nav_menu() in one location.
register_nav_menu( 'primary', __( 'Primary Menu', 'twentyeleven' ) );
// Add support for a variety of post formats
add_theme_support( 'post-formats', array( 'aside', 'link', 'gallery', 'status', 'quote', 'image' ) );
$theme_options = twentyeleven_get_theme_options();
if ( 'dark' == $theme_options['color_scheme'] )
$default_background_color = '1d1d1d';
else
$default_background_color = 'e2e2e2';
// Add support for custom backgrounds.
add_theme_support( 'custom-background', array(
// Let WordPress know what our default background color is.
// This is dependent on our current color scheme.
'default-color' => $default_background_color,
) );
// This theme uses Featured Images (also known as post thumbnails) for per-post/per-page Custom Header images
add_theme_support( 'post-thumbnails' );
// Add support for custom headers.
$custom_header_support = array(
// The default header text color.
'default-text-color' => '000',
// The height and width of our custom header.
'width' => apply_filters( 'twentyeleven_header_image_width', 1000 ),
'height' => apply_filters( 'twentyeleven_header_image_height', 288 ),
// Support flexible heights.
'flex-height' => true,
// Random image rotation by default.
'random-default' => true,
// Callback for styling the header.
'wp-head-callback' => 'twentyeleven_header_style',
// Callback for styling the header preview in the admin.
'admin-head-callback' => 'twentyeleven_admin_header_style',
// Callback used to display the header preview in the admin.
'admin-preview-callback' => 'twentyeleven_admin_header_image',
);
add_theme_support( 'custom-header', $custom_header_support );
if ( ! function_exists( 'get_custom_header' ) ) {
// This is all for compatibility with versions of WordPress prior to 3.4.
define( 'HEADER_TEXTCOLOR', $custom_header_support['default-text-color'] );
define( 'HEADER_IMAGE', '' );
define( 'HEADER_IMAGE_WIDTH', $custom_header_support['width'] );
define( 'HEADER_IMAGE_HEIGHT', $custom_header_support['height'] );
add_custom_image_header( $custom_header_support['wp-head-callback'], $custom_header_support['admin-head-callback'], $custom_header_support['admin-preview-callback'] );
add_custom_background();
}
// We'll be using post thumbnails for custom header images on posts and pages.
// We want them to be the size of the header image that we just defined
// Larger images will be auto-cropped to fit, smaller ones will be ignored. See header.php.
set_post_thumbnail_size( $custom_header_support['width'], $custom_header_support['height'], true );
// Add Twenty Eleven's custom image sizes.
// Used for large feature (header) images.
add_image_size( 'large-feature', $custom_header_support['width'], $custom_header_support['height'], true );
// Used for featured posts if
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