Dome/Zeitfresser-Wordpress-Theme
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Dome
2026-04-20 22:55:59 +02:00
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<?php
/**
* Zeitfresser theme functions and definitions.
*
* @package zeitfresser
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
if ( ! defined( 'ZEITFRESSER_VERSION' ) ) {
define( 'ZEITFRESSER_VERSION', '2.2.0' );
}
if ( ! defined( 'DAISY_BLOG_VERSION' ) ) {
define( 'DAISY_BLOG_VERSION', ZEITFRESSER_VERSION );
}
require get_template_directory() . '/inc/zeitfresser-helpers.php';
require get_template_directory() . '/inc/legacy-aliases.php';
require get_template_directory() . '/inc/performance-tools.php';
/**
* Theme setup.
*
* @return void
*/
function zeitfresser_setup() {
load_theme_textdomain( 'zeitfresser', get_template_directory() . '/languages' );
add_theme_support( 'automatic-feed-links' );
add_theme_support( 'title-tag' );
add_theme_support( 'post-thumbnails' );
add_theme_support(
'html5',
array(
'search-form',
'comment-form',
'comment-list',
'gallery',
'caption',
'style',
'script',
)
);
add_theme_support(
'custom-background',
apply_filters(
'zeitfresser_custom_background_args',
array(
'default-image' => '',
'default-color' => zeitfresser_get_default_background_color(),
)
)
);
add_theme_support( 'customize-selective-refresh-widgets' );
add_theme_support(
'custom-logo',
array(
'height' => 250,
'width' => 250,
'flex-width' => true,
'flex-height' => true,
)
);
add_theme_support( 'align-wide' );
add_theme_support( 'wp-block-styles' );
add_theme_support( 'responsive-embeds' );
register_nav_menus(
array(
'menu-1' => esc_html__( 'Primary', 'zeitfresser' ),
)
);
add_editor_style( 'editor-style.css' );
}
add_action( 'after_setup_theme', 'zeitfresser_setup' );
/**
* Set the content width in pixels.
*
* @return void
*/
function zeitfresser_content_width() {
$GLOBALS['content_width'] = apply_filters( 'zeitfresser_content_width', 640 );
}
add_action( 'after_setup_theme', 'zeitfresser_content_width', 0 );
/**
* Register widget area.
*
* @return void
*/
function zeitfresser_widgets_init() {
register_sidebar(
array(
'name' => esc_html__( 'Sidebar', 'zeitfresser' ),
'id' => 'sidebar-1',
'description' => esc_html__( 'Add widgets here.', 'zeitfresser' ),
'before_widget' => '<section id="%1$s" class="widget %2$s">',
'after_widget' => '</section>',
'before_title' => '<h4 class="widget-title">',
'after_title' => '</h4>',
)
);
}
add_action( 'widgets_init', 'zeitfresser_widgets_init' );
/**
* Return file version using filemtime in production-safe form.
*
* @param string $relative_path Relative file path inside the theme.
* @return string
*/
function zeitfresser_asset_version( $relative_path ) {
$path = get_template_directory() . $relative_path;
return file_exists( $path ) ? (string) filemtime( $path ) : ZEITFRESSER_VERSION;
}
/**
* Enqueue scripts and styles.
*
* @return void
*/
function zeitfresser_scripts() {
wp_enqueue_style(
'zeitfresser',
get_template_directory_uri() . '/style.css',
array(),
zeitfresser_asset_version( '/style.css' )
);
wp_style_add_data( 'zeitfresser', 'rtl', 'replace' );
wp_enqueue_script(
'zeitfresser-navigation',
get_template_directory_uri() . '/js/navigation.js',
array(),
zeitfresser_asset_version( '/js/navigation.js' ),
true
);
if ( is_home() || is_front_page() || is_archive() || is_search() ) {
wp_enqueue_script(
'zeitfresser-masonry',
get_template_directory_uri() . '/js/masonry.pkgd.min.js',
array(),
zeitfresser_asset_version( '/js/masonry.pkgd.min.js' ),
true
);
}
wp_enqueue_script(
'zeitfresser-scripts',
get_template_directory_uri() . '/js/scripts.js',
array(),
zeitfresser_asset_version( '/js/scripts.js' ),
true
);
if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
wp_enqueue_script( 'comment-reply' );
}
}
add_action( 'wp_enqueue_scripts', 'zeitfresser_scripts' );
/**
* Theme package marker kept for compatibility with the original premium controls.
*
* @return string
*/
function zeitfresser_free_pro() {
return 'pro';
}
require get_template_directory() . '/inc/custom-header.php';
require get_template_directory() . '/inc/template-tags.php';
require get_template_directory() . '/inc/template-functions.php';
require get_template_directory() . '/inc/customizer.php';
if ( defined( 'JETPACK__VERSION' ) ) {
require get_template_directory() . '/inc/jetpack.php';
}
require get_template_directory() . '/inc/blocks/blocks.php';
require get_template_directory() . '/inc/graphthemes-widgets/graphthemes-widgets.php';
require get_template_directory() . '/inc/pagination.php';
/**
* Remove duplicate local Google font generation to avoid unnecessary footer CSS.
*
* @return void
*/
function zeitfresser_disable_duplicate_local_fonts() {
remove_action( 'wp_loaded', 'zeitfresser_google_font_local' );
}
add_action( 'after_setup_theme', 'zeitfresser_disable_duplicate_local_fonts', 20 );
/**
* Add safe front-end performance optimizations.
*
* @return void
*/
function zeitfresser_performance_setup() {
// Disable the legacy embeds script on the front end. Native iframes still work.
if ( ! is_admin() ) {
wp_deregister_script( 'wp-embed' );
}
}
add_action( 'wp_enqueue_scripts', 'zeitfresser_performance_setup', 100 );
/**
* Remove unnecessary head output for a leaner front end.
*
* @return void
*/
function zeitfresser_cleanup_wp_head() {
remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
remove_action( 'wp_print_styles', 'print_emoji_styles' );
remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
remove_action( 'admin_print_styles', 'print_emoji_styles' );
remove_action( 'wp_head', 'rsd_link' );
remove_action( 'wp_head', 'wlwmanifest_link' );
remove_action( 'wp_head', 'wp_generator' );
remove_action( 'wp_head', 'rest_output_link_wp_head', 10 );
remove_action( 'wp_head', 'wp_shortlink_wp_head', 10 );
remove_action( 'wp_head', 'wp_oembed_add_discovery_links', 10 );
remove_action( 'wp_head', 'wp_oembed_add_host_js' );
remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head', 10 );
}
add_action( 'init', 'zeitfresser_cleanup_wp_head' );
/**
* Remove front-end dashicons for visitors.
*
* @return void
*/
function zeitfresser_maybe_dequeue_dashicons() {
if ( ! is_user_logged_in() ) {
wp_deregister_style( 'dashicons' );
}
}
add_action( 'wp_enqueue_scripts', 'zeitfresser_maybe_dequeue_dashicons', 100 );
/**
* Add resource hints for externally loaded fonts only when needed.
*
* @param array $urls URLs to print for resource hints.
* @param string $relation_type Hint relation type.
* @return array
*/
function zeitfresser_resource_hints( $urls, $relation_type ) {
$uses_external_fonts = false;
if ( function_exists( 'zeitfresser_fonts_url' ) ) {
$uses_external_fonts = ! empty( zeitfresser_fonts_url( zeitfresser_used_google_fonts() ) ) && empty( zeitfresser_get_local_webfonts_css() );
}
if ( $uses_external_fonts && 'preconnect' === $relation_type ) {
$urls[] = 'https://fonts.googleapis.com';
$urls[] = array(
'href' => 'https://fonts.gstatic.com',
'crossorigin' => 'anonymous',
);
}
return $urls;
}
add_filter( 'wp_resource_hints', 'zeitfresser_resource_hints', 10, 2 );
/**
* Preload locally hosted webfont files once they are available.
*
* @return void
*/
function zeitfresser_preload_local_webfonts() {
if ( is_admin() || ! function_exists( 'zeitfresser_get_local_webfonts_css' ) ) {
return;
}
$urls = zeitfresser_get_local_webfont_urls( zeitfresser_get_local_webfonts_css() );
if ( empty( $urls ) ) {
return;
}
$urls = array_slice( $urls, 0, 4 );
foreach ( $urls as $url ) {
$type = ( '.woff2' === substr( $url, -6 ) ) ? 'font/woff2' : 'font/woff';
printf( "<link rel='preload' href='%s' as='font' type='%s' crossorigin>
", esc_url( $url ), esc_attr( $type ) );
}
}
add_action( 'wp_head', 'zeitfresser_preload_local_webfonts', 2 );
/**
* Improve image decoding defaults without changing visual output.
*
* @param array $attr Image markup attributes.
* @param WP_Post $attachment Attachment post object.
* @param string|array $size Requested image size.
* @return array
*/
function zeitfresser_optimize_image_attributes( $attr, $attachment, $size ) {
if ( empty( $attr['decoding'] ) ) {
$attr['decoding'] = 'async';
}
if ( empty( $attr['loading'] ) && ! is_admin() ) {
$attr['loading'] = 'lazy';
}
return $attr;
}
add_filter( 'wp_get_attachment_image_attributes', 'zeitfresser_optimize_image_attributes', 10, 3 );
/**
* Lower the threshold for WordPress scaled originals.
*
* This prevents very large uploads from shipping oversized source images.
*
* @return int
*/
function zeitfresser_big_image_size_threshold() {
return 1800;
}
add_filter( 'big_image_size_threshold', 'zeitfresser_big_image_size_threshold' );
/**
* Skip generating oversized core intermediate sizes we do not use.
*
* @param array $sizes Registered intermediate sizes.
* @return array
*/
function zeitfresser_filter_intermediate_image_sizes( $sizes ) {
unset( $sizes['1536x1536'], $sizes['2048x2048'] );
return $sizes;
}
add_filter( 'intermediate_image_sizes_advanced', 'zeitfresser_filter_intermediate_image_sizes' );
/**
* Convert generated JPEG and PNG sub-sizes to WebP when supported by the server.
*
* @param array $formats Output format map.
* @return array
*/
function zeitfresser_image_output_format( $formats ) {
if ( function_exists( 'wp_image_editor_supports' ) && wp_image_editor_supports( array( 'mime_type' => 'image/webp' ) ) ) {
$formats['image/jpeg'] = 'image/webp';
$formats['image/png'] = 'image/webp';
}
return $formats;
}
add_filter( 'image_editor_output_format', 'zeitfresser_image_output_format' );
/**
* Keep generated image quality balanced for file size and visual fidelity.
*
* @param int $quality Proposed image quality.
* @param string $mime_type Image mime type.
* @return int
*/
function zeitfresser_image_quality( $quality, $mime_type = 'image/jpeg' ) {
if ( 'image/png' === $mime_type ) {
return $quality;
}
return 82;
}
add_filter( 'wp_editor_set_quality', 'zeitfresser_image_quality', 10, 2 );
/**
* Improve attachment image attributes for layout stability and fetch priority.
*
* @param array $attr Image markup attributes.
* @param WP_Post $attachment Attachment post object.
* @param string|array $size Requested image size.
* @return array
*/
function zeitfresser_improve_attachment_dimensions( $attr, $attachment, $size ) {
if ( empty( $attr['width'] ) || empty( $attr['height'] ) ) {
$metadata = wp_get_attachment_metadata( $attachment->ID );
if ( is_array( $metadata ) && ! empty( $metadata['width'] ) && ! empty( $metadata['height'] ) ) {
if ( empty( $attr['width'] ) ) {
$attr['width'] = (int) $metadata['width'];
}
if ( empty( $attr['height'] ) ) {
$attr['height'] = (int) $metadata['height'];
}
}
}
if ( empty( $attr['fetchpriority'] ) && ! is_admin() && ! is_feed() ) {
static $did_set_high_priority = false;
if ( ! $did_set_high_priority && ( is_home() || is_front_page() || is_archive() || is_search() || is_singular() ) ) {
$attr['fetchpriority'] = 'high';
$did_set_high_priority = true;
}
}
return $attr;
}
add_filter( 'wp_get_attachment_image_attributes', 'zeitfresser_improve_attachment_dimensions', 11, 3 );
/**
* Preload the most likely LCP image for archive and singular views.
*
* @param array $resources Existing preload resources.
* @return array
*/
function zeitfresser_preload_resources( $resources ) {
if ( is_admin() || is_feed() || is_embed() ) {
return $resources;
}
$image_url = '';
$image_type = '';
if ( is_singular() ) {
$object_id = get_queried_object_id();
if ( $object_id && has_post_thumbnail( $object_id ) ) {
$image_url = get_the_post_thumbnail_url( $object_id, 'large' );
}
} elseif ( is_home() || is_front_page() || is_archive() || is_search() ) {
global $wp_query;
if ( isset( $wp_query->posts[0]->ID ) && has_post_thumbnail( $wp_query->posts[0]->ID ) ) {
$image_url = get_the_post_thumbnail_url( $wp_query->posts[0]->ID, 'thumbnail' );
}
}
if ( empty( $image_url ) ) {
return $resources;
}
$extension = strtolower( pathinfo( wp_parse_url( $image_url, PHP_URL_PATH ), PATHINFO_EXTENSION ) );
if ( 'jpg' === $extension || 'jpeg' === $extension ) {
$image_type = 'image/jpeg';
} elseif ( 'png' === $extension ) {
$image_type = 'image/png';
} elseif ( 'webp' === $extension ) {
$image_type = 'image/webp';
}
$resources[] = array_filter(
array(
'href' => esc_url( $image_url ),
'as' => 'image',
'type' => $image_type,
'fetchpriority' => 'high',
)
);
return $resources;
}
add_filter( 'wp_preload_resources', 'zeitfresser_preload_resources' );
/**
* Improve script loading strategy for non-critical assets.
*
* @param array $tag Script tag markup.
* @param string $handle Script handle.
* @param string $src Script source URL.
* @return string
*/
function zeitfresser_defer_non_critical_scripts( $tag, $handle, $src ) {
$deferred_handles = array(
'zeitfresser-navigation',
'zeitfresser-masonry',
'zeitfresser-scripts',
);
if ( in_array( $handle, $deferred_handles, true ) && false === strpos( $tag, ' defer' ) ) {
return str_replace( ' src=', ' defer src=', $tag );
}
return $tag;
}
add_filter( 'script_loader_tag', 'zeitfresser_defer_non_critical_scripts', 10, 3 );