<?php
/**
 * Sample implementation of the Custom Header feature
 *
 * You can add an optional custom header image to header.php like so ...
 *
	<?php the_header_image_tag(); ?>
 *
 * @link https://developer.wordpress.org/themes/functionality/custom-headers/
 *
 * @package businessexpo
 */

/**
 * Set up the WordPress core custom header feature.
 */

function businessexpo_custom_header_setup() {
	add_theme_support(
		'custom-header',
		apply_filters(
			'businessexpo_custom_header_args',
			array(
				'default-image'      => get_stylesheet_directory_uri() . '/assets/img/page-header.jpg',
				'default-text-color' => '#fff',
				'width'              => 1920,
				'height'             => 1080,
				'flex-height'        => true,
				'flex-width'         => true,
				'wp-head-callback'   => 'businessexpo_header_style',
			)
		)
	);
}
add_action( 'after_setup_theme', 'businessexpo_custom_header_setup' );

function businessexpo_header_style() {
	$header_text_color = get_header_textcolor();

	/*
	 * If no custom options for text are set, let's bail.
	 * get_header_textcolor() options: Any hex value, 'blank' to hide text. Default: HEADER_TEXTCOLOR.
	 */
	if ( get_theme_support( 'custom-header', 'default-text-color' ) === $header_text_color ) {
		return;
	}

	// If we get this far, we have custom styles. Let's do this.

	if ( ! display_header_text() ) :
		$custom_css = '.site-title, .site-description { position: absolute; clip: rect(1px, 1px, 1px, 1px); }';
		// If the user has set a custom color for the text use that.
	else :
		$custom_css = '.site-title, .site-description { color: #' . esc_attr( $header_text_color ) . '}';
	endif;

	wp_add_inline_style( 'businessexpo-style', $custom_css );
}
add_action( 'wp_enqueue_scripts', 'businessexpo_header_style' );