twentyseventeen_custom_header_setup()

17function twentyseventeen_custom_header_setup() {18 19	add_theme_support(20		'custom-header',21		/**22		 * Filters Twenty Seventeen custom-header support arguments.23		 *24		 * @since Twenty Seventeen 1.025		 *26		 * @param array $args {27		 *     An array of custom-header support arguments.28		 *29		 *     @type string $default-image    Default image of the header.30		 *     @type int    $width            Width in pixels of the custom header image. Default 954.31		 *     @type int    $height           Height in pixels of the custom header image. Default 1300.32		 *     @type string $flex-height      Flex support for height of header.33		 *     @type string $video            Video support for header.34		 *     @type string $wp-head-callback Callback function used to styles the header image and text35		 *                                    displayed on the blog.36		 * }37		 */38		apply_filters(39			'twentyseventeen_custom_header_args',40			array(41				'default-image'    => get_parent_theme_file_uri( '/assets/images/header.jpg' ),42				'width'            => 2000,43				'height'           => 1200,44				'flex-height'      => true,45				'video'            => true,46				'wp-head-callback' => 'twentyseventeen_header_style',47			)48		)49	);50 51	register_default_headers(52		array(53			'default-image' => array(54				'url'           => '%s/assets/images/header.jpg',55				'thumbnail_url' => '%s/assets/images/header.jpg',56				'description'   => __( 'Default Header Image', 'twentyseventeen' ),57			),58		)59	);60}