<?php

/**

 * Custom header implementation

 *

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

 *

 * @package WordPress

 * @subpackage Twenty_Seventeen

 * @since 1.0

 */

/**

 * Set up the WordPress core custom header feature.

 *

 * @uses twentyseventeen_header_style()

 */

function twentyseventeen_custom_header_setup() {

	/**

	 * Filter Twenty Seventeen custom-header support arguments.

	 *

	 * @since Twenty Seventeen 1.0

	 *

	 * @param array $args {

	 *     An array of custom-header support arguments.

	 *

	 *     @type string $default-image     		Default image of the header.

	 *     @type string $default_text_color     Default color of the header text.

	 *     @type int    $width                  Width in pixels of the custom header image. Default 954.

	 *     @type int    $height                 Height in pixels of the custom header image. Default 1300.

	 *     @type string $wp-head-callback       Callback function used to styles the header image and text

	 *                                          displayed on the blog.

	 *     @type string $flex-height     		Flex support for height of header.

	 * }

	 */

	add_theme_support( 'custom-header', apply_filters( 'twentyseventeen_custom_header_args', array(

		'default-image'      => get_parent_theme_file_uri( '/assets/images/header.jpg' ),

		'width'              => 2000,

		'height'             => 1200,

		'flex-height'        => true,

		'video'              => true,

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

	) ) );

	register_default_headers( array(

		'default-image' => array(

			'url'           => '%s/assets/images/header.jpg',

			'thumbnail_url' => '%s/assets/images/header.jpg',

			'description'   => __( 'Default Header Image', 'twentyseventeen' ),

		),

	) );

}

add_action( 'after_setup_theme', 'twentyseventeen_custom_header_setup' );

if ( ! function_exists( 'twentyseventeen_header_style' ) ) :

/**

 * Styles the header image and text displayed on the blog.

 *

 * @see twentyseventeen_custom_header_setup().

 */

function twentyseventeen_header_style() {

	$header_text_color = get_header_textcolor();

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

	// get_header_textcolor() options: add_theme_support( 'custom-header' ) is default, hide text (returns 'blank') or any hex value.

	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 id="twentyseventeen-custom-header-styles" type="text/css">

	<?php

		// Has the text been hidden?

		if ( 'blank' === $header_text_color ) :

	?>

		.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,

		.colors-dark .site-title a,

		.colors-custom .site-title a,

		body.has-header-image .site-title a,

		body.has-header-video .site-title a,

		body.has-header-image.colors-dark .site-title a,

		body.has-header-video.colors-dark .site-title a,

		body.has-header-image.colors-custom .site-title a,

		body.has-header-video.colors-custom .site-title a,

		.site-description,

		.colors-dark .site-description,

		.colors-custom .site-description,

		body.has-header-image .site-description,

		body.has-header-video .site-description,

		body.has-header-image.colors-dark .site-description,

		body.has-header-video.colors-dark .site-description,

		body.has-header-image.colors-custom .site-description,

		body.has-header-video.colors-custom .site-description {

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

		}

	<?php endif; ?>

	</style>

	<?php

}

endif; // End of twentyseventeen_header_style.

/**

 * Customize video play/pause button in the custom header.

 *

 * @param array $settings Video settings.

 * @return array The filtered video settings.

 */

function twentyseventeen_video_controls( $settings ) {

	$settings['l10n']['play'] = '<span class="screen-reader-text">' . __( 'Play background video', 'twentyseventeen' ) . '</span>' . twentyseventeen_get_svg( array( 'icon' => 'play' ) );

	$settings['l10n']['pause'] = '<span class="screen-reader-text">' . __( 'Pause background video', 'twentyseventeen' ) . '</span>' . twentyseventeen_get_svg( array( 'icon' => 'pause' ) );

	return $settings;

}

add_filter( 'header_video_settings', 'twentyseventeen_video_controls' );