refactor: modularize theme structure and clean up functions.php
- moved performance-related logic into /inc/performance/performance.php - relocated image optimization logic into dedicated image-optimizer module - simplified functions.php to act as bootstrap and theme setup only - introduced consistent module loading via require_once - improved file structure with clear separation of concerns (customizer, utilities, tools, performance) theme setup improvements: - consolidated editor styles setup into zeitfresser_setup() - removed redundant hooks and improved readability assets: - added script dependency (scripts -> navigation) to prevent load order issues - improved stylesheet dependency handling result: - cleaner architecture - better maintainability and scalability - reduced risk of side effects during future feature development
This commit is contained in:
+33
-518
@@ -27,82 +27,38 @@ if ( ! defined( 'ZEITFRESSER_IMAGE_OPTIMIZATION_VERSION' ) ) {
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* Customizer
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* Customizer
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* ------------------------------------------------------------------------
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* ------------------------------------------------------------------------
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*/
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*/
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require get_template_directory() . '/inc/customizer/core-settings.php';
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require_once get_template_directory() . '/inc/customizer/core-settings.php';
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require get_template_directory() . '/inc/customizer/general-settings.php';
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require_once get_template_directory() . '/inc/customizer/general-settings.php';
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require get_template_directory() . '/inc/customizer/layout-settings.php';
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require_once get_template_directory() . '/inc/customizer/layout-settings.php';
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require get_template_directory() . '/inc/customizer/toc-settings.php';
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require_once get_template_directory() . '/inc/customizer/toc-settings.php';
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require get_template_directory() . '/inc/customizer/social-settings.php';
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require_once get_template_directory() . '/inc/customizer/social-settings.php';
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require get_template_directory() . '/inc/customizer/image-optimizer-settings.php';
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require_once get_template_directory() . '/inc/customizer/image-optimizer-settings.php';
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/**
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/**
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* ------------------------------------------------------------------------
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* ------------------------------------------------------------------------
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* Utilities
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* Utilities
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* ------------------------------------------------------------------------
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* ------------------------------------------------------------------------
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*/
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*/
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require get_template_directory() . '/inc/utilities/helpers.php';
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require_once get_template_directory() . '/inc/utilities/helpers.php';
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require get_template_directory() . '/inc/utilities/template-tags.php';
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require_once get_template_directory() . '/inc/utilities/template-tags.php';
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require get_template_directory() . '/inc/utilities/template-functions.php';
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require_once get_template_directory() . '/inc/utilities/template-functions.php';
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require get_template_directory() . '/inc/utilities/pagination.php';
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require_once get_template_directory() . '/inc/utilities/pagination.php';
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require get_template_directory() . '/inc/utilities/toc.php';
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require_once get_template_directory() . '/inc/utilities/toc.php';
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/**
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/**
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* ------------------------------------------------------------------------
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* ------------------------------------------------------------------------
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* Tools
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* Tools
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* ------------------------------------------------------------------------
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* ------------------------------------------------------------------------
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*/
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*/
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require get_template_directory() . '/inc/tools/image-optimizer.php';
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require_once get_template_directory() . '/inc/tools/image-optimizer.php';
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require get_template_directory() . '/inc/tools/code-block.php';
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require_once get_template_directory() . '/inc/tools/code-block.php';
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/**
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/**
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* ------------------------------------------------------------------------
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* ------------------------------------------------------------------------
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* Upload Handling (Original File Tracking)
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* Performance
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* ------------------------------------------------------------------------
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* ------------------------------------------------------------------------
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*/
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*/
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function zeitfresser_capture_original_upload( $upload, $context ) {
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require_once get_template_directory() . '/inc/performance/performance.php';
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if ( empty( $upload['file'] ) ) {
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return $upload;
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}
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// Store temporarily (request-scoped)
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$GLOBALS['zeitfresser_last_uploaded_file'] = $upload['file'];
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return $upload;
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}
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add_filter( 'wp_handle_upload', 'zeitfresser_capture_original_upload', 10, 2 );
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/**
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* Persist original file path to attachment meta
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*/
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function zeitfresser_store_original_file( $attachment_id ) {
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if ( ! wp_attachment_is_image( $attachment_id ) ) {
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return;
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}
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if ( empty( $GLOBALS['zeitfresser_last_uploaded_file'] ) ) {
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return;
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}
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$file = $GLOBALS['zeitfresser_last_uploaded_file'];
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// Safety: ensure file still exists
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if ( ! file_exists( $file ) ) {
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return;
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}
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// Prevent overwrite if already set
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if ( get_post_meta( $attachment_id, '_zeitfresser_original_file', true ) ) {
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return;
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}
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update_post_meta(
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$attachment_id,
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'_zeitfresser_original_file',
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$file
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);
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}
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add_action( 'add_attachment', 'zeitfresser_store_original_file' );
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/**
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/**
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* ------------------------------------------------------------------------
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* ------------------------------------------------------------------------
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@@ -117,6 +73,10 @@ function zeitfresser_setup() {
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add_theme_support( 'title-tag' );
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add_theme_support( 'title-tag' );
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add_theme_support( 'post-thumbnails' );
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add_theme_support( 'post-thumbnails' );
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// Editor Styles
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add_theme_support( 'editor-styles' );
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add_editor_style( 'assets/css/editor.css' );
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add_theme_support( 'html5', array(
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add_theme_support( 'html5', array(
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'search-form',
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'search-form',
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'comment-form',
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'comment-form',
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@@ -192,7 +152,9 @@ add_action( 'widgets_init', 'zeitfresser_widgets_init' );
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*/
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*/
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function zeitfresser_scripts() {
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function zeitfresser_scripts() {
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// Base stylesheet (theme root)
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/**
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* Base stylesheet
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*/
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wp_enqueue_style(
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wp_enqueue_style(
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'zeitfresser',
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'zeitfresser',
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get_template_directory_uri() . '/style.css',
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get_template_directory_uri() . '/style.css',
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@@ -202,14 +164,16 @@ function zeitfresser_scripts() {
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: ZEITFRESSER_VERSION
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: ZEITFRESSER_VERSION
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);
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);
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// Styles
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/**
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* Additional styles (versioned helper)
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*/
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$fonts = zeitfresser_asset_versioned('/css/fonts.css');
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$fonts = zeitfresser_asset_versioned('/css/fonts.css');
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$colors = zeitfresser_asset_versioned('/css/colors.css');
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$colors = zeitfresser_asset_versioned('/css/colors.css');
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wp_enqueue_style(
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wp_enqueue_style(
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'zeitfresser-fonts',
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'zeitfresser-fonts',
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$fonts['url'],
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$fonts['url'],
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[],
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['zeitfresser'],
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$fonts['version']
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$fonts['version']
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);
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);
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@@ -220,7 +184,9 @@ function zeitfresser_scripts() {
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$colors['version']
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$colors['version']
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);
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);
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// Scripts
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/**
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* Scripts
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*/
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$nav = zeitfresser_asset_versioned('/js/navigation.js');
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$nav = zeitfresser_asset_versioned('/js/navigation.js');
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$scripts = zeitfresser_asset_versioned('/js/scripts.js');
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$scripts = zeitfresser_asset_versioned('/js/scripts.js');
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@@ -235,467 +201,16 @@ function zeitfresser_scripts() {
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wp_enqueue_script(
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wp_enqueue_script(
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'zeitfresser-scripts',
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'zeitfresser-scripts',
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$scripts['url'],
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$scripts['url'],
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[],
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['zeitfresser-navigation'],
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$scripts['version'],
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$scripts['version'],
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true
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true
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);
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);
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// WordPress native threaded comments
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/**
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* WordPress native threaded comments
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*/
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if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
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if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
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wp_enqueue_script( 'comment-reply' );
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wp_enqueue_script( 'comment-reply' );
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}
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}
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}
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}
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add_action( 'wp_enqueue_scripts', 'zeitfresser_scripts', 10 );
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add_action( 'wp_enqueue_scripts', 'zeitfresser_scripts', 10 );
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// Editor Styles
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function zeitfresser_editor_styles_setup() {
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add_theme_support( 'editor-styles' );
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add_editor_style( 'assets/css/editor.css' );
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}
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add_action( 'after_setup_theme', 'zeitfresser_editor_styles_setup' );
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/**
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* ------------------------------------------------------------------------
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* Performance Tweaks
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* ------------------------------------------------------------------------
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*/
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/**
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* ------------------------------------------------------------------------
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* Defer non-critical JavaScript
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* ------------------------------------------------------------------------
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*
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* Prevents JS from blocking page rendering.
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*/
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function zeitfresser_defer_scripts( $tag, $handle, $src ) {
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$defer_scripts = array(
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'zeitfresser-navigation',
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'zeitfresser-scripts',
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);
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if ( in_array( $handle, $defer_scripts, true ) ) {
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return str_replace( ' src=', ' defer src=', $tag );
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}
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return $tag;
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}
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add_filter( 'script_loader_tag', 'zeitfresser_defer_scripts', 10, 3 );
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/**
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* ------------------------------------------------------------------------
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* Image Loading Optimization (LCP + Lazy Loading)
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* ------------------------------------------------------------------------
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*
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* Ensures the first visible image loads immediately (LCP),
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* while all other images are lazy-loaded for performance.
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*/
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function zeitfresser_optimize_image_attributes( $attr, $attachment, $size ) {
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static $is_first = true;
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if ( ! is_admin() ) {
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if ( $is_first ) {
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// First image (critical for LCP)
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$attr['loading'] = 'eager';
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$is_first = false;
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} else {
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// All other images
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$attr['loading'] = 'lazy';
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}
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// Improve decoding performance
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$attr['decoding'] = 'async';
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}
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return $attr;
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}
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add_filter( 'wp_get_attachment_image_attributes', 'zeitfresser_optimize_image_attributes', 10, 3 );
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|
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/**
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* Lower the threshold for WordPress scaled originals when auto optimization is enabled.
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*
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* When automatic optimization is disabled, original uploads should remain untouched.
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*
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* @return int|false
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*/
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function zeitfresser_big_image_size_threshold() {
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|
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$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
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$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
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|
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if ( ! $auto_enabled && ! $force_enabled ) {
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return false;
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}
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return 1800;
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}
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add_filter( 'big_image_size_threshold', 'zeitfresser_big_image_size_threshold' );
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|
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/**
|
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* Skip generating oversized core intermediate sizes we do not use.
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*
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* @param array $sizes Registered intermediate sizes.
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* @return array
|
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*/
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function zeitfresser_filter_intermediate_image_sizes( $sizes ) {
|
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|
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$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
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$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
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|
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if ( ! $auto_enabled && ! $force_enabled ) {
|
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return $sizes;
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}
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|
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unset(
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$sizes['1536x1536'],
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$sizes['2048x2048']
|
|
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);
|
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|
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return $sizes;
|
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}
|
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add_filter( 'intermediate_image_sizes_advanced', 'zeitfresser_filter_intermediate_image_sizes' );
|
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|
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/**
|
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* Improve attachment image attributes for layout stability and fetch priority.
|
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*
|
|
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* @param array $attr Image markup attributes.
|
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* @param WP_Post $attachment Attachment post object.
|
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* @param string|array $size Requested image size.
|
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* @return array
|
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*/
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function zeitfresser_improve_attachment_dimensions( $attr, $attachment, $size ) {
|
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|
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if ( empty( $attr['width'] ) || empty( $attr['height'] ) ) {
|
|
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$metadata = wp_get_attachment_metadata( $attachment->ID );
|
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|
|
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if ( is_array( $metadata ) && ! empty( $metadata['width'] ) && ! empty( $metadata['height'] ) ) {
|
|
||||||
if ( empty( $attr['width'] ) ) {
|
|
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$attr['width'] = (int) $metadata['width'];
|
|
||||||
}
|
|
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|
|
||||||
if ( empty( $attr['height'] ) ) {
|
|
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$attr['height'] = (int) $metadata['height'];
|
|
||||||
}
|
|
||||||
}
|
|
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}
|
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|
|
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if ( empty( $attr['fetchpriority'] ) && ! is_admin() && ! is_feed() ) {
|
|
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static $did_set_high_priority = false;
|
|
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|
|
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if ( ! $did_set_high_priority && is_singular() ) {
|
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$attr['fetchpriority'] = 'high';
|
|
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$did_set_high_priority = true;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
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return $attr;
|
|
||||||
}
|
|
||||||
add_filter( 'wp_get_attachment_image_attributes', 'zeitfresser_improve_attachment_dimensions', 11, 3 );
|
|
||||||
|
|
||||||
/**
|
|
||||||
* ------------------------------------------------------------------------
|
|
||||||
* Preload critical fonts
|
|
||||||
* ------------------------------------------------------------------------
|
|
||||||
*
|
|
||||||
* Preloads only the fonts that are needed for initial rendering
|
|
||||||
* (headings + body text). This improves LCP and avoids render delays.
|
|
||||||
*/
|
|
||||||
function zeitfresser_preload_fonts() {
|
|
||||||
?>
|
|
||||||
<!-- Critical Fonts Only -->
|
|
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<link rel="preload" href="<?php echo zeitfresser_asset('/fonts/oswald-400.woff2'); ?>" as="font" type="font/woff2" crossorigin>
|
|
||||||
<link rel="preload" href="<?php echo zeitfresser_asset('/fonts/oswald-700.woff2'); ?>" as="font" type="font/woff2" crossorigin>
|
|
||||||
<link rel="preload" href="<?php echo zeitfresser_asset('/fonts/roboto-400.woff2'); ?>" as="font" type="font/woff2" crossorigin>
|
|
||||||
<link rel="preload" href="<?php echo zeitfresser_asset('/fonts/roboto-500.woff2'); ?>" as="font" type="font/woff2" crossorigin>
|
|
||||||
<?php
|
|
||||||
}
|
|
||||||
add_action('wp_head', 'zeitfresser_preload_fonts', 0);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Optimize font loading with preconnect
|
|
||||||
*/
|
|
||||||
add_filter( 'wp_resource_hints', function( $urls, $relation_type ) {
|
|
||||||
|
|
||||||
if ( 'preconnect' === $relation_type ) {
|
|
||||||
$urls[] = [
|
|
||||||
'href' => get_template_directory_uri(),
|
|
||||||
'crossorigin' => 'anonymous',
|
|
||||||
];
|
|
||||||
}
|
|
||||||
|
|
||||||
return $urls;
|
|
||||||
|
|
||||||
}, 10, 2 );
|
|
||||||
|
|
||||||
/**
|
|
||||||
* ------------------------------------------------------------------------
|
|
||||||
* Critical CSS (inline for faster first render)
|
|
||||||
* ------------------------------------------------------------------------
|
|
||||||
*
|
|
||||||
* We inline only the minimal CSS required for initial layout.
|
|
||||||
* This ensures the page structure renders immediately without
|
|
||||||
* waiting for the full stylesheet.
|
|
||||||
*/
|
|
||||||
function zeitfresser_inline_critical_css() {
|
|
||||||
?>
|
|
||||||
<style>
|
|
||||||
body {
|
|
||||||
margin: 0;
|
|
||||||
background: #1e1f29;
|
|
||||||
}
|
|
||||||
|
|
||||||
.container {
|
|
||||||
max-width: var(--container-width, 1140px);
|
|
||||||
margin: 0 auto;
|
|
||||||
padding: 0 70px;
|
|
||||||
}
|
|
||||||
|
|
||||||
@media (max-width: 800px) {
|
|
||||||
.container {
|
|
||||||
padding: 0 20px;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
.custom-grid-view {
|
|
||||||
display: grid;
|
|
||||||
}
|
|
||||||
|
|
||||||
header.site-header {
|
|
||||||
background: var(--light-color);
|
|
||||||
}
|
|
||||||
</style>
|
|
||||||
<?php
|
|
||||||
}
|
|
||||||
add_action('wp_head', 'zeitfresser_inline_critical_css', 1);
|
|
||||||
|
|
||||||
function zeitfresser_performance_setup() {
|
|
||||||
if ( ! is_admin() ) {
|
|
||||||
wp_deregister_script( 'wp-embed' );
|
|
||||||
}
|
|
||||||
}
|
|
||||||
add_action( 'wp_enqueue_scripts', 'zeitfresser_performance_setup', 100 );
|
|
||||||
|
|
||||||
function zeitfresser_cleanup_wp_head() {
|
|
||||||
remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
|
|
||||||
remove_action( 'wp_print_styles', 'print_emoji_styles' );
|
|
||||||
remove_action( 'wp_head', 'rsd_link' );
|
|
||||||
remove_action( 'wp_head', 'wlwmanifest_link' );
|
|
||||||
remove_action( 'wp_head', 'wp_generator' );
|
|
||||||
}
|
|
||||||
add_action( 'init', 'zeitfresser_cleanup_wp_head' );
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Convert generated JPEG and PNG files to AVIF/WebP when enabled.
|
|
||||||
*
|
|
||||||
* Auto optimization can be disabled for uploads via Customizer.
|
|
||||||
* Manual optimization may still force conversion through a request-scoped flag.
|
|
||||||
*
|
|
||||||
* @param array $formats Output format map.
|
|
||||||
* @return array
|
|
||||||
*/
|
|
||||||
function zeitfresser_image_output_format( $formats ) {
|
|
||||||
|
|
||||||
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
|
||||||
$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
|
|
||||||
|
|
||||||
if ( ! $auto_enabled && ! $force_enabled ) {
|
|
||||||
return $formats;
|
|
||||||
}
|
|
||||||
|
|
||||||
if ( function_exists( 'wp_image_editor_supports' ) ) {
|
|
||||||
|
|
||||||
// Prefer AVIF if supported.
|
|
||||||
if ( wp_image_editor_supports( array( 'mime_type' => 'image/avif' ) ) ) {
|
|
||||||
$formats['image/jpeg'] = 'image/avif';
|
|
||||||
$formats['image/png'] = 'image/avif';
|
|
||||||
|
|
||||||
// Fallback to WebP.
|
|
||||||
} elseif ( 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' );
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Mark images as optimized only when optimization is actually active.
|
|
||||||
*
|
|
||||||
* @param array $metadata Attachment metadata.
|
|
||||||
* @param int $attachment_id Attachment ID.
|
|
||||||
* @return array
|
|
||||||
*/
|
|
||||||
function zeitfresser_mark_new_images_optimized( $metadata, $attachment_id ) {
|
|
||||||
|
|
||||||
if ( ! wp_attachment_is_image( $attachment_id ) ) {
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
|
||||||
$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
|
|
||||||
|
|
||||||
if ( ! $auto_enabled && ! $force_enabled ) {
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
update_post_meta(
|
|
||||||
$attachment_id,
|
|
||||||
'_zeitfresser_media_optimized_version',
|
|
||||||
ZEITFRESSER_IMAGE_OPTIMIZATION_VERSION
|
|
||||||
);
|
|
||||||
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
add_filter( 'wp_generate_attachment_metadata', 'zeitfresser_mark_new_images_optimized', 20, 2 );
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Auto Optimize Hook
|
|
||||||
*/
|
|
||||||
add_filter(
|
|
||||||
'wp_generate_attachment_metadata',
|
|
||||||
'zeitfresser_auto_optimize_on_upload',
|
|
||||||
15,
|
|
||||||
2
|
|
||||||
);
|
|
||||||
|
|
||||||
function zeitfresser_auto_optimize_on_upload( $metadata, $attachment_id ) {
|
|
||||||
|
|
||||||
// Only images
|
|
||||||
if ( ! wp_attachment_is_image( $attachment_id ) ) {
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Feature toggle
|
|
||||||
if ( ! get_theme_mod( 'ztfr_auto_optimize', true ) ) {
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
$file = get_attached_file( $attachment_id );
|
|
||||||
|
|
||||||
if ( ! $file || ! file_exists( $file ) ) {
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
// DO NOT overwrite captured original
|
|
||||||
if ( ! get_post_meta( $attachment_id, '_zeitfresser_original_file', true ) ) {
|
|
||||||
update_post_meta( $attachment_id, '_zeitfresser_original_file', $file );
|
|
||||||
}
|
|
||||||
|
|
||||||
// Mark optimized (IMPORTANT: no re-trigger here)
|
|
||||||
update_post_meta(
|
|
||||||
$attachment_id,
|
|
||||||
'_zeitfresser_media_optimized_version',
|
|
||||||
ZEITFRESSER_IMAGE_OPTIMIZATION_VERSION
|
|
||||||
);
|
|
||||||
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Auto Delete Hook
|
|
||||||
*/
|
|
||||||
add_filter(
|
|
||||||
'wp_generate_attachment_metadata',
|
|
||||||
'zeitfresser_auto_delete_original_after_upload',
|
|
||||||
30,
|
|
||||||
2
|
|
||||||
);
|
|
||||||
|
|
||||||
function zeitfresser_auto_delete_original_after_upload( $metadata, $attachment_id ) {
|
|
||||||
|
|
||||||
if ( ! wp_attachment_is_image( $attachment_id ) ) {
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
|
||||||
$delete_enabled = get_theme_mod( 'ztfr_auto_delete', false );
|
|
||||||
|
|
||||||
if ( ! $auto_enabled || ! $delete_enabled ) {
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
$original = get_post_meta(
|
|
||||||
$attachment_id,
|
|
||||||
'_zeitfresser_original_file',
|
|
||||||
true
|
|
||||||
);
|
|
||||||
|
|
||||||
if ( ! $original ) {
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
$ext = strtolower( pathinfo( $original, PATHINFO_EXTENSION ) );
|
|
||||||
|
|
||||||
// Skip modern formats
|
|
||||||
if ( in_array( $ext, [ 'webp', 'avif' ], true ) ) {
|
|
||||||
update_post_meta( $attachment_id, '_zeitfresser_original_deleted', 1 );
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
// 🔥 Wenn nichts mehr existiert → fertig
|
|
||||||
if ( ! zeitfresser_original_family_exists( $attachment_id, $original ) ) {
|
|
||||||
update_post_meta( $attachment_id, '_zeitfresser_original_deleted', 1 );
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
// 🔥 HIER passiert der Fix
|
|
||||||
zeitfresser_delete_original_family_files( $attachment_id, $original );
|
|
||||||
|
|
||||||
// Final check
|
|
||||||
if ( ! zeitfresser_original_family_exists( $attachment_id, $original ) ) {
|
|
||||||
update_post_meta( $attachment_id, '_zeitfresser_original_deleted', 1 );
|
|
||||||
}
|
|
||||||
|
|
||||||
return $metadata;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* 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' ) {
|
|
||||||
|
|
||||||
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
|
||||||
$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
|
|
||||||
|
|
||||||
if ( ! $auto_enabled && ! $force_enabled ) {
|
|
||||||
return $quality;
|
|
||||||
}
|
|
||||||
|
|
||||||
return match ($mime_type) {
|
|
||||||
'image/avif' => 50,
|
|
||||||
'image/webp' => 75,
|
|
||||||
default => 82,
|
|
||||||
};
|
|
||||||
}
|
|
||||||
add_filter( 'wp_editor_set_quality', 'zeitfresser_image_quality', 10, 2 );
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Improve responsive image sizes attribute.
|
|
||||||
*
|
|
||||||
* @param string $sizes Existing sizes attribute.
|
|
||||||
* @param array $size Requested image size.
|
|
||||||
* @return string
|
|
||||||
*/
|
|
||||||
function zeitfresser_responsive_image_sizes( $sizes, $size ) {
|
|
||||||
|
|
||||||
// Single post content
|
|
||||||
if ( is_singular() ) {
|
|
||||||
return '(max-width: 768px) 100vw, (max-width: 1200px) 720px, 720px';
|
|
||||||
}
|
|
||||||
|
|
||||||
// Archive / blog overview
|
|
||||||
if ( is_home() || is_front_page() || is_archive() || is_search() ) {
|
|
||||||
return '(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 400px';
|
|
||||||
}
|
|
||||||
|
|
||||||
return $sizes;
|
|
||||||
}
|
|
||||||
add_filter( 'wp_calculate_image_sizes', 'zeitfresser_responsive_image_sizes', 10, 2 );
|
|
||||||
|
|||||||
@@ -0,0 +1,236 @@
|
|||||||
|
<?php
|
||||||
|
/**
|
||||||
|
* Performance tweaks.
|
||||||
|
*
|
||||||
|
* @package Zeitfresser
|
||||||
|
*/
|
||||||
|
|
||||||
|
if ( ! defined( 'ABSPATH' ) ) {
|
||||||
|
exit;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* ------------------------------------------------------------------------
|
||||||
|
* Defer non-critical JavaScript
|
||||||
|
* ------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Prevents JS from blocking page rendering.
|
||||||
|
*/
|
||||||
|
function zeitfresser_defer_scripts( $tag, $handle, $src ) {
|
||||||
|
|
||||||
|
$defer_scripts = array(
|
||||||
|
'zeitfresser-navigation',
|
||||||
|
'zeitfresser-scripts',
|
||||||
|
);
|
||||||
|
|
||||||
|
if ( in_array( $handle, $defer_scripts, true ) ) {
|
||||||
|
return str_replace( ' src=', ' defer src=', $tag );
|
||||||
|
}
|
||||||
|
|
||||||
|
return $tag;
|
||||||
|
}
|
||||||
|
add_filter( 'script_loader_tag', 'zeitfresser_defer_scripts', 10, 3 );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* ------------------------------------------------------------------------
|
||||||
|
* Image Loading Optimization (LCP + Lazy Loading)
|
||||||
|
* ------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Ensures the first visible image loads immediately (LCP),
|
||||||
|
* while all other images are lazy-loaded for performance.
|
||||||
|
*/
|
||||||
|
function zeitfresser_optimize_image_attributes( $attr, $attachment, $size ) {
|
||||||
|
|
||||||
|
static $is_first = true;
|
||||||
|
|
||||||
|
if ( ! is_admin() ) {
|
||||||
|
|
||||||
|
if ( $is_first ) {
|
||||||
|
// First image (critical for LCP)
|
||||||
|
$attr['loading'] = 'eager';
|
||||||
|
$is_first = false;
|
||||||
|
} else {
|
||||||
|
// All other images
|
||||||
|
$attr['loading'] = 'lazy';
|
||||||
|
}
|
||||||
|
|
||||||
|
// Improve decoding performance
|
||||||
|
$attr['decoding'] = 'async';
|
||||||
|
}
|
||||||
|
|
||||||
|
return $attr;
|
||||||
|
}
|
||||||
|
add_filter( 'wp_get_attachment_image_attributes', 'zeitfresser_optimize_image_attributes', 10, 3 );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Lower the threshold for WordPress scaled originals when auto optimization is enabled.
|
||||||
|
*
|
||||||
|
* When automatic optimization is disabled, original uploads should remain untouched.
|
||||||
|
*
|
||||||
|
* @return int|false
|
||||||
|
*/
|
||||||
|
function zeitfresser_big_image_size_threshold() {
|
||||||
|
|
||||||
|
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
||||||
|
$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
|
||||||
|
|
||||||
|
if ( ! $auto_enabled && ! $force_enabled ) {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
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 ) {
|
||||||
|
|
||||||
|
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
||||||
|
$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
|
||||||
|
|
||||||
|
if ( ! $auto_enabled && ! $force_enabled ) {
|
||||||
|
return $sizes;
|
||||||
|
}
|
||||||
|
|
||||||
|
unset(
|
||||||
|
$sizes['1536x1536'],
|
||||||
|
$sizes['2048x2048']
|
||||||
|
);
|
||||||
|
|
||||||
|
return $sizes;
|
||||||
|
}
|
||||||
|
add_filter( 'intermediate_image_sizes_advanced', 'zeitfresser_filter_intermediate_image_sizes' );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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_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 critical fonts
|
||||||
|
* ------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Preloads only the fonts that are needed for initial rendering
|
||||||
|
* (headings + body text). This improves LCP and avoids render delays.
|
||||||
|
*/
|
||||||
|
function zeitfresser_preload_fonts() {
|
||||||
|
?>
|
||||||
|
<!-- Critical Fonts Only -->
|
||||||
|
<link rel="preload" href="<?php echo zeitfresser_asset('/fonts/oswald-400.woff2'); ?>" as="font" type="font/woff2" crossorigin>
|
||||||
|
<link rel="preload" href="<?php echo zeitfresser_asset('/fonts/oswald-700.woff2'); ?>" as="font" type="font/woff2" crossorigin>
|
||||||
|
<link rel="preload" href="<?php echo zeitfresser_asset('/fonts/roboto-400.woff2'); ?>" as="font" type="font/woff2" crossorigin>
|
||||||
|
<link rel="preload" href="<?php echo zeitfresser_asset('/fonts/roboto-500.woff2'); ?>" as="font" type="font/woff2" crossorigin>
|
||||||
|
<?php
|
||||||
|
}
|
||||||
|
add_action('wp_head', 'zeitfresser_preload_fonts', 0);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Optimize font loading with preconnect
|
||||||
|
*/
|
||||||
|
add_filter( 'wp_resource_hints', function( $urls, $relation_type ) {
|
||||||
|
|
||||||
|
if ( 'preconnect' === $relation_type ) {
|
||||||
|
$urls[] = [
|
||||||
|
'href' => get_template_directory_uri(),
|
||||||
|
'crossorigin' => 'anonymous',
|
||||||
|
];
|
||||||
|
}
|
||||||
|
|
||||||
|
return $urls;
|
||||||
|
|
||||||
|
}, 10, 2 );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* ------------------------------------------------------------------------
|
||||||
|
* Critical CSS (inline for faster first render)
|
||||||
|
* ------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* We inline only the minimal CSS required for initial layout.
|
||||||
|
* This ensures the page structure renders immediately without
|
||||||
|
* waiting for the full stylesheet.
|
||||||
|
*/
|
||||||
|
function zeitfresser_inline_critical_css() {
|
||||||
|
?>
|
||||||
|
<style>
|
||||||
|
body {
|
||||||
|
margin: 0;
|
||||||
|
background: #1e1f29;
|
||||||
|
}
|
||||||
|
|
||||||
|
.container {
|
||||||
|
max-width: var(--container-width, 1140px);
|
||||||
|
margin: 0 auto;
|
||||||
|
padding: 0 70px;
|
||||||
|
}
|
||||||
|
|
||||||
|
@media (max-width: 800px) {
|
||||||
|
.container {
|
||||||
|
padding: 0 20px;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
.custom-grid-view {
|
||||||
|
display: grid;
|
||||||
|
}
|
||||||
|
|
||||||
|
header.site-header {
|
||||||
|
background: var(--light-color);
|
||||||
|
}
|
||||||
|
</style>
|
||||||
|
<?php
|
||||||
|
}
|
||||||
|
add_action('wp_head', 'zeitfresser_inline_critical_css', 1);
|
||||||
|
|
||||||
|
function zeitfresser_performance_setup() {
|
||||||
|
if ( ! is_admin() ) {
|
||||||
|
wp_deregister_script( 'wp-embed' );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
add_action( 'wp_enqueue_scripts', 'zeitfresser_performance_setup', 100 );
|
||||||
|
|
||||||
|
function zeitfresser_cleanup_wp_head() {
|
||||||
|
remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
|
||||||
|
remove_action( 'wp_print_styles', 'print_emoji_styles' );
|
||||||
|
remove_action( 'wp_head', 'rsd_link' );
|
||||||
|
remove_action( 'wp_head', 'wlwmanifest_link' );
|
||||||
|
remove_action( 'wp_head', 'wp_generator' );
|
||||||
|
}
|
||||||
|
add_action( 'init', 'zeitfresser_cleanup_wp_head' );
|
||||||
@@ -9,6 +9,272 @@ if ( ! defined( 'ABSPATH' ) ) {
|
|||||||
exit;
|
exit;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* ------------------------------------------------------------------------
|
||||||
|
* Upload Handling (Original File Tracking)
|
||||||
|
* ------------------------------------------------------------------------
|
||||||
|
*/
|
||||||
|
function zeitfresser_capture_original_upload( $upload, $context ) {
|
||||||
|
|
||||||
|
if ( empty( $upload['file'] ) ) {
|
||||||
|
return $upload;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Store temporarily (request-scoped)
|
||||||
|
$GLOBALS['zeitfresser_last_uploaded_file'] = $upload['file'];
|
||||||
|
|
||||||
|
return $upload;
|
||||||
|
}
|
||||||
|
add_filter( 'wp_handle_upload', 'zeitfresser_capture_original_upload', 10, 2 );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Persist original file path to attachment meta
|
||||||
|
*/
|
||||||
|
function zeitfresser_store_original_file( $attachment_id ) {
|
||||||
|
|
||||||
|
if ( ! wp_attachment_is_image( $attachment_id ) ) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if ( empty( $GLOBALS['zeitfresser_last_uploaded_file'] ) ) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
$file = $GLOBALS['zeitfresser_last_uploaded_file'];
|
||||||
|
|
||||||
|
// Safety: ensure file still exists
|
||||||
|
if ( ! file_exists( $file ) ) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Prevent overwrite if already set
|
||||||
|
if ( get_post_meta( $attachment_id, '_zeitfresser_original_file', true ) ) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
update_post_meta(
|
||||||
|
$attachment_id,
|
||||||
|
'_zeitfresser_original_file',
|
||||||
|
$file
|
||||||
|
);
|
||||||
|
}
|
||||||
|
add_action( 'add_attachment', 'zeitfresser_store_original_file' );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Convert generated JPEG and PNG files to AVIF/WebP when enabled.
|
||||||
|
*
|
||||||
|
* Auto optimization can be disabled for uploads via Customizer.
|
||||||
|
* Manual optimization may still force conversion through a request-scoped flag.
|
||||||
|
*
|
||||||
|
* @param array $formats Output format map.
|
||||||
|
* @return array
|
||||||
|
*/
|
||||||
|
function zeitfresser_image_output_format( $formats ) {
|
||||||
|
|
||||||
|
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
||||||
|
$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
|
||||||
|
|
||||||
|
if ( ! $auto_enabled && ! $force_enabled ) {
|
||||||
|
return $formats;
|
||||||
|
}
|
||||||
|
|
||||||
|
if ( function_exists( 'wp_image_editor_supports' ) ) {
|
||||||
|
|
||||||
|
// Prefer AVIF if supported.
|
||||||
|
if ( wp_image_editor_supports( array( 'mime_type' => 'image/avif' ) ) ) {
|
||||||
|
$formats['image/jpeg'] = 'image/avif';
|
||||||
|
$formats['image/png'] = 'image/avif';
|
||||||
|
|
||||||
|
// Fallback to WebP.
|
||||||
|
} elseif ( 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' );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Mark images as optimized only when optimization is actually active.
|
||||||
|
*
|
||||||
|
* @param array $metadata Attachment metadata.
|
||||||
|
* @param int $attachment_id Attachment ID.
|
||||||
|
* @return array
|
||||||
|
*/
|
||||||
|
function zeitfresser_mark_new_images_optimized( $metadata, $attachment_id ) {
|
||||||
|
|
||||||
|
if ( ! wp_attachment_is_image( $attachment_id ) ) {
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
||||||
|
$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
|
||||||
|
|
||||||
|
if ( ! $auto_enabled && ! $force_enabled ) {
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
update_post_meta(
|
||||||
|
$attachment_id,
|
||||||
|
'_zeitfresser_media_optimized_version',
|
||||||
|
ZEITFRESSER_IMAGE_OPTIMIZATION_VERSION
|
||||||
|
);
|
||||||
|
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
add_filter( 'wp_generate_attachment_metadata', 'zeitfresser_mark_new_images_optimized', 20, 2 );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Auto Optimize Hook
|
||||||
|
*/
|
||||||
|
add_filter(
|
||||||
|
'wp_generate_attachment_metadata',
|
||||||
|
'zeitfresser_auto_optimize_on_upload',
|
||||||
|
15,
|
||||||
|
2
|
||||||
|
);
|
||||||
|
|
||||||
|
function zeitfresser_auto_optimize_on_upload( $metadata, $attachment_id ) {
|
||||||
|
|
||||||
|
// Only images
|
||||||
|
if ( ! wp_attachment_is_image( $attachment_id ) ) {
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Feature toggle
|
||||||
|
if ( ! get_theme_mod( 'ztfr_auto_optimize', true ) ) {
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
$file = get_attached_file( $attachment_id );
|
||||||
|
|
||||||
|
if ( ! $file || ! file_exists( $file ) ) {
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
// DO NOT overwrite captured original
|
||||||
|
if ( ! get_post_meta( $attachment_id, '_zeitfresser_original_file', true ) ) {
|
||||||
|
update_post_meta( $attachment_id, '_zeitfresser_original_file', $file );
|
||||||
|
}
|
||||||
|
|
||||||
|
// Mark optimized (IMPORTANT: no re-trigger here)
|
||||||
|
update_post_meta(
|
||||||
|
$attachment_id,
|
||||||
|
'_zeitfresser_media_optimized_version',
|
||||||
|
ZEITFRESSER_IMAGE_OPTIMIZATION_VERSION
|
||||||
|
);
|
||||||
|
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Auto Delete Hook
|
||||||
|
*/
|
||||||
|
add_filter(
|
||||||
|
'wp_generate_attachment_metadata',
|
||||||
|
'zeitfresser_auto_delete_original_after_upload',
|
||||||
|
30,
|
||||||
|
2
|
||||||
|
);
|
||||||
|
|
||||||
|
function zeitfresser_auto_delete_original_after_upload( $metadata, $attachment_id ) {
|
||||||
|
|
||||||
|
if ( ! wp_attachment_is_image( $attachment_id ) ) {
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
||||||
|
$delete_enabled = get_theme_mod( 'ztfr_auto_delete', false );
|
||||||
|
|
||||||
|
if ( ! $auto_enabled || ! $delete_enabled ) {
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
$original = get_post_meta(
|
||||||
|
$attachment_id,
|
||||||
|
'_zeitfresser_original_file',
|
||||||
|
true
|
||||||
|
);
|
||||||
|
|
||||||
|
if ( ! $original ) {
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
$ext = strtolower( pathinfo( $original, PATHINFO_EXTENSION ) );
|
||||||
|
|
||||||
|
// Skip modern formats
|
||||||
|
if ( in_array( $ext, [ 'webp', 'avif' ], true ) ) {
|
||||||
|
update_post_meta( $attachment_id, '_zeitfresser_original_deleted', 1 );
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
// 🔥 Wenn nichts mehr existiert → fertig
|
||||||
|
if ( ! zeitfresser_original_family_exists( $attachment_id, $original ) ) {
|
||||||
|
update_post_meta( $attachment_id, '_zeitfresser_original_deleted', 1 );
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
// 🔥 HIER passiert der Fix
|
||||||
|
zeitfresser_delete_original_family_files( $attachment_id, $original );
|
||||||
|
|
||||||
|
// Final check
|
||||||
|
if ( ! zeitfresser_original_family_exists( $attachment_id, $original ) ) {
|
||||||
|
update_post_meta( $attachment_id, '_zeitfresser_original_deleted', 1 );
|
||||||
|
}
|
||||||
|
|
||||||
|
return $metadata;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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' ) {
|
||||||
|
|
||||||
|
$auto_enabled = get_theme_mod( 'ztfr_auto_optimize', true );
|
||||||
|
$force_enabled = ! empty( $GLOBALS['zeitfresser_force_image_optimization'] );
|
||||||
|
|
||||||
|
if ( ! $auto_enabled && ! $force_enabled ) {
|
||||||
|
return $quality;
|
||||||
|
}
|
||||||
|
|
||||||
|
return match ($mime_type) {
|
||||||
|
'image/avif' => 50,
|
||||||
|
'image/webp' => 75,
|
||||||
|
default => 82,
|
||||||
|
};
|
||||||
|
}
|
||||||
|
add_filter( 'wp_editor_set_quality', 'zeitfresser_image_quality', 10, 2 );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Improve responsive image sizes attribute.
|
||||||
|
*
|
||||||
|
* @param string $sizes Existing sizes attribute.
|
||||||
|
* @param array $size Requested image size.
|
||||||
|
* @return string
|
||||||
|
*/
|
||||||
|
function zeitfresser_responsive_image_sizes( $sizes, $size ) {
|
||||||
|
|
||||||
|
// Single post content
|
||||||
|
if ( is_singular() ) {
|
||||||
|
return '(max-width: 768px) 100vw, (max-width: 1200px) 720px, 720px';
|
||||||
|
}
|
||||||
|
|
||||||
|
// Archive / blog overview
|
||||||
|
if ( is_home() || is_front_page() || is_archive() || is_search() ) {
|
||||||
|
return '(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 400px';
|
||||||
|
}
|
||||||
|
|
||||||
|
return $sizes;
|
||||||
|
}
|
||||||
|
add_filter( 'wp_calculate_image_sizes', 'zeitfresser_responsive_image_sizes', 10, 2 );
|
||||||
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Register admin page
|
* Register admin page
|
||||||
*/
|
*/
|
||||||
|
|||||||
Reference in New Issue
Block a user