wp_blog/wp-content/themes/twentytwelve/inc/custom-header.php
2020-01-02 23:15:16 +07:00

150 lines
4.0 KiB
PHP

<?php
/**
* Implements an optional custom header for Twenty Twelve.
* See http://codex.wordpress.org/Custom_Headers
*
* @package WordPress
* @subpackage Twenty_Twelve
* @since Twenty Twelve 1.0
*/
/**
* Sets up the WordPress core custom header arguments and settings.
*
* @uses add_theme_support() to register support for 3.4 and up.
* @uses twentytwelve_header_style() to style front-end.
* @uses twentytwelve_admin_header_style() to style wp-admin form.
* @uses twentytwelve_admin_header_image() to add custom markup to wp-admin form.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_custom_header_setup() {
$args = array(
// Text color and image (empty to use none).
'default-text-color' => '444',
'default-image' => '',
// Set height and width, with a maximum value for the width.
'height' => 250,
'width' => 960,
'max-width' => 2000,
// Support flexible height and width.
'flex-height' => true,
'flex-width' => true,
// Random image rotation off by default.
'random-default' => false,
// Callbacks for styling the header and the admin preview.
'wp-head-callback' => 'twentytwelve_header_style',
'admin-head-callback' => 'twentytwelve_admin_header_style',
'admin-preview-callback' => 'twentytwelve_admin_header_image',
);
add_theme_support( 'custom-header', $args );
}
add_action( 'after_setup_theme', 'twentytwelve_custom_header_setup' );
/**
* Styles the header text displayed on the blog.
*
* get_header_textcolor() options: 444 is default, hide text (returns 'blank'), or any hex value.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_header_style() {
$text_color = get_header_textcolor();
// If no custom options for text are set, let's bail
if ( $text_color == get_theme_support( 'custom-header', 'default-text-color' ) )
return;
// If we get this far, we have custom styles.
?>
<style type="text/css">
<?php
// Has the text been hidden?
if ( ! display_header_text() ) :
?>
.site-title,
.site-description {
position: absolute !important;
clip: rect(1px 1px 1px 1px); /* 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 $text_color; ?> !important;
}
<?php endif; ?>
</style>
<?php
}
/**
* Styles the header image displayed on the Appearance > Header admin panel.
*
* @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 {
color: #515151;
text-decoration: none;
}
#headimg h1 a:hover {
color: #21759b;
}
#headimg h2 {
color: #757575;
font: normal 13px/1.8 "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", sans-serif;
margin-bottom: 24px;
}
#headimg img {
max-width: <?php echo get_theme_support( 'custom-header', 'max-width' ); ?>px;
}
</style>
<?php
}
/**
* Outputs markup to be displayed on the Appearance > Header admin panel.
* This callback overrides the default markup displayed there.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_admin_header_image() {
?>
<div id="headimg">
<?php
if ( ! display_header_text() )
$style = ' style="display:none;"';
else
$style = ' style="color:#' . get_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 ); ?>" class="header-image" width="<?php echo get_custom_header()->width; ?>" height="<?php echo get_custom_header()->height; ?>" alt="" />
<?php endif; ?>
</div>
<?php }