476 lines
17 KiB
PHP
476 lines
17 KiB
PHP
<?php
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/**
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* Functions which enhance the theme by hooking into WordPress
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*
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* @package WordPress
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* @subpackage Twenty_Twenty_One
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* @since Twenty Twenty-One 1.0
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*/
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/**
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* Adds custom classes to the array of body classes.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param array $classes Classes for the body element.
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* @return array
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*/
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function twenty_twenty_one_body_classes( $classes ) {
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// Helps detect if JS is enabled or not.
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$classes[] = 'no-js';
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// Adds `singular` to singular pages, and `hfeed` to all other pages.
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$classes[] = is_singular() ? 'singular' : 'hfeed';
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// Add a body class if main navigation is active.
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if ( has_nav_menu( 'primary' ) ) {
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$classes[] = 'has-main-navigation';
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}
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// Add a body class if there are no footer widgets.
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if ( ! is_active_sidebar( 'sidebar-1' ) ) {
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$classes[] = 'no-widgets';
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}
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return $classes;
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}
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add_filter( 'body_class', 'twenty_twenty_one_body_classes' );
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/**
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* Adds custom class to the array of posts classes.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param array $classes An array of CSS classes.
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* @return array
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*/
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function twenty_twenty_one_post_classes( $classes ) {
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$classes[] = 'entry';
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return $classes;
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}
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add_filter( 'post_class', 'twenty_twenty_one_post_classes', 10, 3 );
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/**
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* Add a pingback url auto-discovery header for single posts, pages, or attachments.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return void
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*/
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function twenty_twenty_one_pingback_header() {
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if ( is_singular() && pings_open() ) {
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echo '<link rel="pingback" href="', esc_url( get_bloginfo( 'pingback_url' ) ), '">';
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}
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}
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add_action( 'wp_head', 'twenty_twenty_one_pingback_header' );
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/**
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* Remove the `no-js` class from body if JS is supported.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return void
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*/
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function twenty_twenty_one_supports_js() {
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echo '<script>document.body.classList.remove("no-js");</script>';
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}
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add_action( 'wp_footer', 'twenty_twenty_one_supports_js' );
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/**
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* Changes comment form default fields.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param array $defaults The form defaults.
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* @return array
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*/
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function twenty_twenty_one_comment_form_defaults( $defaults ) {
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// Adjust height of comment form.
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$defaults['comment_field'] = preg_replace( '/rows="\d+"/', 'rows="5"', $defaults['comment_field'] );
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return $defaults;
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}
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add_filter( 'comment_form_defaults', 'twenty_twenty_one_comment_form_defaults' );
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/**
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* Determines if post thumbnail can be displayed.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return bool
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*/
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function twenty_twenty_one_can_show_post_thumbnail() {
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/**
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* Filters whether post thumbnail can be displayed.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param bool $show_post_thumbnail Whether to show post thumbnail.
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*/
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return apply_filters(
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'twenty_twenty_one_can_show_post_thumbnail',
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! post_password_required() && ! is_attachment() && has_post_thumbnail()
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);
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}
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/**
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* Returns the size for avatars used in the theme.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return int
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*/
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function twenty_twenty_one_get_avatar_size() {
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return 60;
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}
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/**
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* Creates continue reading text.
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*
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* @since Twenty Twenty-One 1.0
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*/
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function twenty_twenty_one_continue_reading_text() {
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$continue_reading = sprintf(
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/* translators: %s: Post title. Only visible to screen readers. */
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esc_html__( 'Continue reading %s', 'twentytwentyone' ),
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the_title( '<span class="screen-reader-text">', '</span>', false )
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);
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return $continue_reading;
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}
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/**
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* Creates the continue reading link for excerpt.
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*
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* @since Twenty Twenty-One 1.0
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*/
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function twenty_twenty_one_continue_reading_link_excerpt() {
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if ( ! is_admin() ) {
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return '… <a class="more-link" href="' . esc_url( get_permalink() ) . '">' . twenty_twenty_one_continue_reading_text() . '</a>';
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}
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}
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// Filter the excerpt more link.
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add_filter( 'excerpt_more', 'twenty_twenty_one_continue_reading_link_excerpt' );
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/**
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* Creates the continue reading link.
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*
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* @since Twenty Twenty-One 1.0
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*/
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function twenty_twenty_one_continue_reading_link() {
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if ( ! is_admin() ) {
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return '<div class="more-link-container"><a class="more-link" href="' . esc_url( get_permalink() ) . '#more-' . esc_attr( get_the_ID() ) . '">' . twenty_twenty_one_continue_reading_text() . '</a></div>';
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}
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}
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// Filter the content more link.
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add_filter( 'the_content_more_link', 'twenty_twenty_one_continue_reading_link' );
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if ( ! function_exists( 'twenty_twenty_one_post_title' ) ) {
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/**
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* Adds a title to posts and pages that are missing titles.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param string $title The title.
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* @return string
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*/
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function twenty_twenty_one_post_title( $title ) {
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return '' === $title ? esc_html_x( 'Untitled', 'Added to posts and pages that are missing titles', 'twentytwentyone' ) : $title;
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}
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}
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add_filter( 'the_title', 'twenty_twenty_one_post_title' );
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/**
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* Gets the SVG code for a given icon.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param string $group The icon group.
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* @param string $icon The icon.
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* @param int $size The icon size in pixels.
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* @return string
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*/
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function twenty_twenty_one_get_icon_svg( $group, $icon, $size = 24 ) {
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return Twenty_Twenty_One_SVG_Icons::get_svg( $group, $icon, $size );
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}
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/**
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* Changes the default navigation arrows to svg icons
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param string $calendar_output The generated HTML of the calendar.
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* @return string
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*/
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function twenty_twenty_one_change_calendar_nav_arrows( $calendar_output ) {
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$calendar_output = str_replace( '« ', is_rtl() ? twenty_twenty_one_get_icon_svg( 'ui', 'arrow_right' ) : twenty_twenty_one_get_icon_svg( 'ui', 'arrow_left' ), $calendar_output );
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$calendar_output = str_replace( ' »', is_rtl() ? twenty_twenty_one_get_icon_svg( 'ui', 'arrow_left' ) : twenty_twenty_one_get_icon_svg( 'ui', 'arrow_right' ), $calendar_output );
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return $calendar_output;
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}
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add_filter( 'get_calendar', 'twenty_twenty_one_change_calendar_nav_arrows' );
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/**
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* Get custom CSS.
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*
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* Return CSS for non-latin language, if available, or null
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param string $type Whether to return CSS for the "front-end", "block-editor", or "classic-editor".
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* @return string
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*/
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function twenty_twenty_one_get_non_latin_css( $type = 'front-end' ) {
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// Fetch site locale.
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$locale = get_bloginfo( 'language' );
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/**
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* Filters the fallback fonts for non-latin languages.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param array $font_family An array of locales and font families.
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*/
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$font_family = apply_filters(
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'twenty_twenty_one_get_localized_font_family_types',
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array(
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// Arabic.
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'ar' => array( 'Tahoma', 'Arial', 'sans-serif' ),
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'ary' => array( 'Tahoma', 'Arial', 'sans-serif' ),
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'azb' => array( 'Tahoma', 'Arial', 'sans-serif' ),
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'ckb' => array( 'Tahoma', 'Arial', 'sans-serif' ),
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'fa-IR' => array( 'Tahoma', 'Arial', 'sans-serif' ),
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'haz' => array( 'Tahoma', 'Arial', 'sans-serif' ),
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'ps' => array( 'Tahoma', 'Arial', 'sans-serif' ),
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// Chinese Simplified (China) - Noto Sans SC.
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'zh-CN' => array( '\'PingFang SC\'', '\'Helvetica Neue\'', '\'Microsoft YaHei New\'', '\'STHeiti Light\'', 'sans-serif' ),
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// Chinese Traditional (Taiwan) - Noto Sans TC.
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'zh-TW' => array( '\'PingFang TC\'', '\'Helvetica Neue\'', '\'Microsoft YaHei New\'', '\'STHeiti Light\'', 'sans-serif' ),
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// Chinese (Hong Kong) - Noto Sans HK.
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'zh-HK' => array( '\'PingFang HK\'', '\'Helvetica Neue\'', '\'Microsoft YaHei New\'', '\'STHeiti Light\'', 'sans-serif' ),
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// Cyrillic.
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'bel' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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'bg-BG' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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'kk' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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'mk-MK' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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'mn' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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'ru-RU' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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'sah' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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'sr-RS' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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'tt-RU' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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'uk' => array( '\'Helvetica Neue\'', 'Helvetica', '\'Segoe UI\'', 'Arial', 'sans-serif' ),
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// Devanagari.
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'bn-BD' => array( 'Arial', 'sans-serif' ),
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'hi-IN' => array( 'Arial', 'sans-serif' ),
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'mr' => array( 'Arial', 'sans-serif' ),
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'ne-NP' => array( 'Arial', 'sans-serif' ),
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// Greek.
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'el' => array( '\'Helvetica Neue\', Helvetica, Arial, sans-serif' ),
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// Gujarati.
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'gu' => array( 'Arial', 'sans-serif' ),
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// Hebrew.
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'he-IL' => array( '\'Arial Hebrew\'', 'Arial', 'sans-serif' ),
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// Japanese.
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'ja' => array( 'sans-serif' ),
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// Korean.
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'ko-KR' => array( '\'Apple SD Gothic Neo\'', '\'Malgun Gothic\'', '\'Nanum Gothic\'', 'Dotum', 'sans-serif' ),
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// Thai.
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'th' => array( '\'Sukhumvit Set\'', '\'Helvetica Neue\'', 'Helvetica', 'Arial', 'sans-serif' ),
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// Vietnamese.
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'vi' => array( '\'Libre Franklin\'', 'sans-serif' ),
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)
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);
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// Return if the selected language has no fallback fonts.
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if ( empty( $font_family[ $locale ] ) ) {
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return '';
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}
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/**
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* Filters the elements to apply fallback fonts to.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param array $elements An array of elements for "front-end", "block-editor", or "classic-editor".
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*/
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$elements = apply_filters(
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'twenty_twenty_one_get_localized_font_family_elements',
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array(
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'front-end' => array( 'body', 'input', 'textarea', 'button', '.button', '.faux-button', '.wp-block-button__link', '.wp-block-file__button', '.has-drop-cap:not(:focus)::first-letter', '.entry-content .wp-block-archives', '.entry-content .wp-block-categories', '.entry-content .wp-block-cover-image', '.entry-content .wp-block-latest-comments', '.entry-content .wp-block-latest-posts', '.entry-content .wp-block-pullquote', '.entry-content .wp-block-quote.is-large', '.entry-content .wp-block-quote.is-style-large', '.entry-content .wp-block-archives *', '.entry-content .wp-block-categories *', '.entry-content .wp-block-latest-posts *', '.entry-content .wp-block-latest-comments *', '.entry-content p', '.entry-content ol', '.entry-content ul', '.entry-content dl', '.entry-content dt', '.entry-content cite', '.entry-content figcaption', '.entry-content .wp-caption-text', '.comment-content p', '.comment-content ol', '.comment-content ul', '.comment-content dl', '.comment-content dt', '.comment-content cite', '.comment-content figcaption', '.comment-content .wp-caption-text', '.widget_text p', '.widget_text ol', '.widget_text ul', '.widget_text dl', '.widget_text dt', '.widget-content .rssSummary', '.widget-content cite', '.widget-content figcaption', '.widget-content .wp-caption-text' ),
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'block-editor' => array( '.editor-styles-wrapper > *', '.editor-styles-wrapper p', '.editor-styles-wrapper ol', '.editor-styles-wrapper ul', '.editor-styles-wrapper dl', '.editor-styles-wrapper dt', '.editor-post-title__block .editor-post-title__input', '.editor-styles-wrapper .wp-block h1', '.editor-styles-wrapper .wp-block h2', '.editor-styles-wrapper .wp-block h3', '.editor-styles-wrapper .wp-block h4', '.editor-styles-wrapper .wp-block h5', '.editor-styles-wrapper .wp-block h6', '.editor-styles-wrapper .has-drop-cap:not(:focus)::first-letter', '.editor-styles-wrapper cite', '.editor-styles-wrapper figcaption', '.editor-styles-wrapper .wp-caption-text' ),
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'classic-editor' => array( 'body#tinymce.wp-editor', 'body#tinymce.wp-editor p', 'body#tinymce.wp-editor ol', 'body#tinymce.wp-editor ul', 'body#tinymce.wp-editor dl', 'body#tinymce.wp-editor dt', 'body#tinymce.wp-editor figcaption', 'body#tinymce.wp-editor .wp-caption-text', 'body#tinymce.wp-editor .wp-caption-dd', 'body#tinymce.wp-editor cite', 'body#tinymce.wp-editor table' ),
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)
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);
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// Return if the specified type doesn't exist.
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if ( empty( $elements[ $type ] ) ) {
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return '';
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}
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// Include file if function doesn't exist.
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if ( ! function_exists( 'twenty_twenty_one_generate_css' ) ) {
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require_once get_theme_file_path( 'inc/custom-css.php' ); // phpcs:ignore WPThemeReview.CoreFunctionality.FileInclude.FileIncludeFound
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}
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// Return the specified styles.
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return twenty_twenty_one_generate_css( // @phpstan-ignore-line.
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implode( ',', $elements[ $type ] ),
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'font-family',
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implode( ',', $font_family[ $locale ] ),
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null,
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null,
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false
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);
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}
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/**
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* Print the first instance of a block in the content, and then break away.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param string $block_name The full block type name, or a partial match.
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* Example: `core/image`, `core-embed/*`.
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* @param string|null $content The content to search in. Use null for get_the_content().
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* @param int $instances How many instances of the block will be printed (max). Default 1.
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* @return bool Returns true if a block was located & printed, otherwise false.
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*/
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function twenty_twenty_one_print_first_instance_of_block( $block_name, $content = null, $instances = 1 ) {
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$instances_count = 0;
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$blocks_content = '';
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if ( ! $content ) {
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$content = get_the_content();
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}
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// Parse blocks in the content.
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$blocks = parse_blocks( $content );
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// Loop blocks.
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foreach ( $blocks as $block ) {
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// Sanity check.
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if ( ! isset( $block['blockName'] ) ) {
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continue;
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}
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// Check if this the block matches the $block_name.
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$is_matching_block = false;
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// If the block ends with *, try to match the first portion.
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if ( '*' === $block_name[-1] ) {
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$is_matching_block = 0 === strpos( $block['blockName'], rtrim( $block_name, '*' ) );
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} else {
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$is_matching_block = $block_name === $block['blockName'];
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}
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if ( $is_matching_block ) {
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// Increment count.
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$instances_count++;
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// Add the block HTML.
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$blocks_content .= render_block( $block );
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// Break the loop if the $instances count was reached.
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if ( $instances_count >= $instances ) {
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break;
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}
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}
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}
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if ( $blocks_content ) {
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/** This filter is documented in wp-includes/post-template.php */
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echo apply_filters( 'the_content', $blocks_content ); // phpcs:ignore WordPress.Security.EscapeOutput
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return true;
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}
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return false;
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}
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/**
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* Retrieve protected post password form content.
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*
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* @since Twenty Twenty-One 1.0
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* @since Twenty Twenty-One 1.4 Corrected parameter name for `$output`,
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* added the `$post` parameter.
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*
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* @param string $output The password form HTML output.
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* @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
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* @return string HTML content for password form for password protected post.
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*/
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function twenty_twenty_one_password_form( $output, $post = 0 ) {
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$post = get_post( $post );
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$label = 'pwbox-' . ( empty( $post->ID ) ? wp_rand() : $post->ID );
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$output = '<p class="post-password-message">' . esc_html__( 'This content is password protected. Please enter a password to view.', 'twentytwentyone' ) . '</p>
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<form action="' . esc_url( site_url( 'wp-login.php?action=postpass', 'login_post' ) ) . '" class="post-password-form" method="post">
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<label class="post-password-form__label" for="' . esc_attr( $label ) . '">' . esc_html_x( 'Password', 'Post password form', 'twentytwentyone' ) . '</label><input class="post-password-form__input" name="post_password" id="' . esc_attr( $label ) . '" type="password" spellcheck="false" size="20" /><input type="submit" class="post-password-form__submit" name="' . esc_attr_x( 'Submit', 'Post password form', 'twentytwentyone' ) . '" value="' . esc_attr_x( 'Enter', 'Post password form', 'twentytwentyone' ) . '" /></form>
|
|
';
|
|
return $output;
|
|
}
|
|
add_filter( 'the_password_form', 'twenty_twenty_one_password_form', 10, 2 );
|
|
|
|
/**
|
|
* Filters the list of attachment image attributes.
|
|
*
|
|
* @since Twenty Twenty-One 1.0
|
|
*
|
|
* @param string[] $attr Array of attribute values for the image markup, keyed by attribute name.
|
|
* See wp_get_attachment_image().
|
|
* @param WP_Post $attachment Image attachment post.
|
|
* @param string|int[] $size Requested image size. Can be any registered image size name, or
|
|
* an array of width and height values in pixels (in that order).
|
|
* @return string[] The filtered attributes for the image markup.
|
|
*/
|
|
function twenty_twenty_one_get_attachment_image_attributes( $attr, $attachment, $size ) {
|
|
|
|
if ( is_admin() ) {
|
|
return $attr;
|
|
}
|
|
|
|
if ( isset( $attr['class'] ) && str_contains( $attr['class'], 'custom-logo' ) ) {
|
|
return $attr;
|
|
}
|
|
|
|
$width = false;
|
|
$height = false;
|
|
|
|
if ( is_array( $size ) ) {
|
|
$width = (int) $size[0];
|
|
$height = (int) $size[1];
|
|
} elseif ( $attachment && is_object( $attachment ) && $attachment->ID ) {
|
|
$meta = wp_get_attachment_metadata( $attachment->ID );
|
|
if ( isset( $meta['width'] ) && isset( $meta['height'] ) ) {
|
|
$width = (int) $meta['width'];
|
|
$height = (int) $meta['height'];
|
|
}
|
|
}
|
|
|
|
if ( $width && $height ) {
|
|
|
|
// Add style.
|
|
$attr['style'] = isset( $attr['style'] ) ? $attr['style'] : '';
|
|
$attr['style'] = 'width:100%;height:' . round( 100 * $height / $width, 2 ) . '%;max-width:' . $width . 'px;' . $attr['style'];
|
|
}
|
|
|
|
return $attr;
|
|
}
|
|
add_filter( 'wp_get_attachment_image_attributes', 'twenty_twenty_one_get_attachment_image_attributes', 10, 3 );
|