<?php

/**

 * Implement an optional custom header for Twenty Twelve

 *

 *

 * @package WordPress

 * @subpackage Twenty_Twelve

 * @since Twenty Twelve 1.0

 */

/**

 * Set 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'     => '515151',

		'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' );

/**

 * Load our special font CSS file.

 *

 * @since Twenty Twelve 1.2

 */

function twentytwelve_custom_header_fonts() {

	$font_url = twentytwelve_get_font_url();

	if ( ! empty( $font_url ) )

		wp_enqueue_style( 'twentytwelve-fonts', esc_url_raw( $font_url ), array(), null );

}

add_action( 'admin_print_styles-appearance_page_custom-header', 'twentytwelve_custom_header_fonts' );

/**

 * Style the header text displayed on the blog.

 *

 * get_header_textcolor() options: 515151 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" id="twentytwelve-header-css">

	<?php

		// Has the text been hidden?

		if ( ! display_header_text() ) :

	?>

		.site-title,

		.site-description {

			position: absolute;

			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-header h1 a,

		.site-header h2 {

			color: #<?php echo $text_color; ?>;

		}

	<?php endif; ?>

	</style>

	<?php

}

/**

 * Style the header image displayed on the Appearance > Header admin panel.

 *

 * @since Twenty Twelve 1.0

 */

function twentytwelve_admin_header_style() {

?>

	<style type="text/css" id="twentytwelve-admin-header-css">

	.appearance_page_custom-header #headimg {

		border: none;

		font-family: "Open Sans", Helvetica, Arial, sans-serif;

	}

	#headimg h1,

	#headimg h2 {

		line-height: 1.84615;

		margin: 0;

		padding: 0;

	}

	#headimg h1 {

		font-size: 26px;

	}

	#headimg h1 a {

		color: #515151;

		text-decoration: none;

	}

	#headimg h1 a:hover {

		color: #21759b !important; /* Has to override custom inline style. */

	}

	#headimg h2 {

		color: #757575;

		font-size: 13px;

		margin-bottom: 24px;

	}

	#headimg img {

		max-width: <?php echo get_theme_support( 'custom-header', 'max-width' ); ?>px;

	}

	</style>

<?php

}

/**

 * Output 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 $header_image = get_header_image();

		if ( ! empty( $header_image ) ) : ?>

		<?php endif; ?>

	</div>