<?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 Paragon Themes
 * @subpackage Nexas
 */

/**
 * Set up the WordPress core custom header feature.
 *
 * @uses nexas_header_style()
 */
if (!function_exists('nexas_custom_header_setup')) :
    function nexas_custom_header_setup()
    {
        add_theme_support('custom-header', apply_filters('nexas_custom_header_args', array(
            'default-image'      => '',
            'default-text-color' => '',
            'width'              => 1000,
            'height'             => 250,
            'flex-height'        => true,
            'wp-head-callback'   => 'nexas_header_style',
        )));
    }

    add_action('after_setup_theme', 'nexas_custom_header_setup');

endif;

if (!function_exists('nexas_header_style')) :
    /**
     * Styles the header image and text displayed on the blog.
     *
     * @see nexas_custom_header_setup().
     */
    function nexas_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: add_theme_support( 'custom-header' ).
         */
        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.
        ?>
        <style type="text/css">
            <?php
                // Has the text been hidden?
                if ( ! display_header_text() ) :
            ?>
            .site-title,
            .site-description {
                position: absolute;
                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 esc_attr( $header_text_color ); ?>;
            }

            <?php endif; ?>
        </style>
        <?php
    }
endif;
