<?php

/**

 * Implement a custom header for Twenty Thirteen

 *

 * @link https://codex.wordpress.org/Custom_Headers

 *

 * @package WordPress

 * @subpackage Twenty_Thirteen

 * @since Twenty Thirteen 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 twentythirteen_header_style() to style front end.

 * @uses twentythirteen_admin_header_style() to style wp-admin form.

 * @uses twentythirteen_admin_header_image() to add custom markup to wp-admin form.

 * @uses register_default_headers() to set up the bundled header images.

 *

 * @since Twenty Thirteen 1.0

 */

function twentythirteen_custom_header_setup() {

	$args = array(

		// Text color and image (empty to use none).

		'default-text-color'     => '220e10',

		'default-image'          => '%s/images/headers/circle.png',

		// Set height and width, with a maximum value for the width.

		'height'                 => 230,

		'width'                  => 1600,

		// Callbacks for styling the header and the admin preview.

		'wp-head-callback'       => 'twentythirteen_header_style',

		'admin-head-callback'    => 'twentythirteen_admin_header_style',

		'admin-preview-callback' => 'twentythirteen_admin_header_image',

	);

	add_theme_support( 'custom-header', $args );

	/*

	 * Default custom headers packaged with the theme.

	 * %s is a placeholder for the theme template directory URI.

	 */

	register_default_headers(

		array(

			'circle'  => array(

				'url'           => '%s/images/headers/circle.png',

				'thumbnail_url' => '%s/images/headers/circle-thumbnail.png',

				'description'   => _x( 'Circle', 'header image description', 'twentythirteen' ),

			),

			'diamond' => array(

				'url'           => '%s/images/headers/diamond.png',

				'thumbnail_url' => '%s/images/headers/diamond-thumbnail.png',

				'description'   => _x( 'Diamond', 'header image description', 'twentythirteen' ),

			),

			'star'    => array(

				'url'           => '%s/images/headers/star.png',

				'thumbnail_url' => '%s/images/headers/star-thumbnail.png',

				'description'   => _x( 'Star', 'header image description', 'twentythirteen' ),

			),

		)

	);

}

add_action( 'after_setup_theme', 'twentythirteen_custom_header_setup', 11 );

/**

 * Load our special font CSS files.

 *

 * @since Twenty Thirteen 1.0

 */

function twentythirteen_custom_header_fonts() {

	// Add Source Sans Pro and Bitter fonts.

	wp_enqueue_style( 'twentythirteen-fonts', twentythirteen_fonts_url(), array(), null );

	// Add Genericons font.

}

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

/**

 * Style the header text displayed on the blog.

 *

 * get_header_textcolor() options: Hide text (returns 'blank'), or any hex value.

 *

 * @since Twenty Thirteen 1.0

 */

function twentythirteen_header_style() {

	$header_image = get_header_image();

	$text_color   = get_header_textcolor();

	// If no custom options for text are set, let's bail.

	if ( empty( $header_image ) && $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="twentythirteen-header-css">

	<?php

	if ( ! empty( $header_image ) ) :

	.site-header {

		background: url(<?php header_image(); ?>) no-repeat scroll top;

		background-size: 1600px auto;

	}

	@media (max-width: 767px) {

		.site-header {

			background-size: 768px auto;

		}

	}

	@media (max-width: 359px) {

		.site-header {

			background-size: 360px auto;

		}

	}

		endif;

		// 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);

	}

	.site-header .home-link {

	min-height: 0;

	}

		endif;

		// If the user has set a custom color for the text, use that.

		elseif ( $text_color != get_theme_support( 'custom-header', 'default-text-color' ) ) :

		.site-title,

		.site-description {

			color: #<?php echo esc_attr( $text_color ); ?>;

		}

	<?php endif; ?>

	</style>

	<?php

}

/**

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

 *

 * @since Twenty Thirteen 1.0

 */

function twentythirteen_admin_header_style() {

	$header_image = get_header_image();

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

	.appearance_page_custom-header #headimg {

		border: none;

		-webkit-box-sizing: border-box;

		-moz-box-sizing:    border-box;

		box-sizing:         border-box;

		<?php

		if ( ! empty( $header_image ) ) {

			echo 'background: url(' . esc_url( $header_image ) . ') no-repeat scroll top; background-size: 1600px auto;';

		}

		?>

		padding: 0 20px;

	}

	#headimg .home-link {

		-webkit-box-sizing: border-box;

		-moz-box-sizing:    border-box;

		box-sizing:         border-box;

		margin: 0 auto;

		max-width: 1040px;

		<?php

		if ( ! empty( $header_image ) || display_header_text() ) {

			echo 'min-height: 230px;';

		}

		?>

		width: 100%;

	}

	<?php if ( ! display_header_text() ) : ?>

	#headimg h1,

	#headimg h2 {

		position: absolute !important;

		clip: rect(1px 1px 1px 1px); /* IE7 */

		clip: rect(1px, 1px, 1px, 1px);

	}

	<?php endif; ?>

	#headimg h1 {

		font: bold 60px/1 Bitter, Georgia, serif;

		margin: 0;

		padding: 58px 0 10px;

	}

	#headimg h1 a {

		text-decoration: none;

	}

	#headimg h1 a:hover {

		text-decoration: underline;

	}

	#headimg h2 {

		font: 200 italic 24px "Source Sans Pro", Helvetica, sans-serif;

		margin: 0;

		text-shadow: none;

	}

	.default-header img {

		max-width: 230px;

		width: auto;

	}

	</style>

}

/**

 * Output markup to be displayed on the Appearance > Header admin panel.

 *

 * This callback overrides the default markup displayed there.

 *

 * @since Twenty Thirteen 1.0

 */

function twentythirteen_admin_header_image() {

	$style = 'color: #' . get_header_textcolor() . ';';

	if ( ! display_header_text() ) {

		$style = 'display: none;';

	}

	?>

	<div id="headimg" style="background: url(<?php echo esc_url( get_header_image() ); ?>) no-repeat scroll top; background-size: 1600px auto;">

		<div class="home-link">

			<h1 class="displaying-header-text"><a id="name" style="<?php echo esc_attr( $style ); ?>" onclick="return false;" href="#" tabindex="-1"><?php bloginfo( 'name' ); ?></a></h1>

			<h2 id="desc" class="displaying-header-text" style="<?php echo esc_attr( $style ); ?>"><?php bloginfo( 'description' ); ?></h2>

		</div>

	</div>

}