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wp-content/themes/twentytwelve/inc/custom-header.php

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+<?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 }