WP_Theme_JSON_Data::update_with( array $new_data ): WP_Theme_JSON_Data

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   Deepak Rajpal 2 years ago

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   This is a sample code to filter default theme.json file with PHP. This will merge additional settings (such as color, typography and layout etc) into the default theme.json file and you will see these options in Editor. [Appearances > Editor > Sytles icon].

   function wpdocs_filter_theme_json_data_callback( $theme_json ) {
       $new_data = array(
           'version' => 2,
           'settings' => array(
               'color' => array(
                   'palette' => array(
                       array(
                           'slug' => 'ti-bg',
                           'color' => '#00FF34',
                           'name' => 'Background'
                       ),
                       array(
                           'slug' => 'ti-fg',
                           'color' => '#006855',
                           'name' => 'Foreground'
                       ),
                       array(
                           'slug' => 'ti-bg-alt',
                           'color' => '#37EA75',
                           'name' => 'Background Alt'
                       ),
                       array(
                           'slug' => 'ti-bg-inv',
                           'color' => '#1A1934',
                           'name' => 'Background Dark'
                       ),
                       array(
                           'slug' => 'ti-fg-alt',
                           'color' => '#FBFB66',
                           'name' => 'Foreground Alt'
                       ),
                       array(
                           'slug' => 'ti-accent',
                           'color' => '#235D66',
                           'name' => 'Accent'
                       )
                   ),
               ),
               'typography' => array(
                   'lineHeight' => true,
                   'customFontSize' => true,
                   'fontFamilies' => array(
                       array(
                           'fontFace' => array(
                               array(
                                   'fontDisplay' => 'swap',
                                   'fontFamily' => 'Open Sans',
                                   'fontStretch' => 'normal',
                                   'fontStyle' => 'normal',
                                   'fontWeight' => '160 700',
                                   'src' => array(
                                       'file: https://fonts-static.cdn-one.com/fonts/google/open-sans/open-sans-300.woff'
                                   )
                               )
                           ),
                           'fontFamily' => 'Open Sans', 'sans-serif',
                           'name' => 'Open Sans',
                           'slug' => 'open-sans'
                       )
                   ),
                   'fontSizes' => array(
                       array(
                           'slug' => 'small',
                           'size' => '14px',
                           'name' => 'Small'
                       ),
                       array(
                           'slug' => 'normal',
                           'size' => '18px',
                           'name' => 'Normal'
                       )
                   )
               ),
               'layout' => array(
                   'contentSize' => '740px',
                   'wideSize' => '1040px'
               )
           ),
       );
   
       return $theme_json->update_with( $new_data );
   }
   
   add_filter( 'wp_theme_json_data_theme', 'wpdocs_filter_theme_json_data_callback' );