Editor: Load all style variation fonts within the editors.

Loads the font family files from style variations defined within a theme for user in the site and post editors. This is to ensure the fonts are shown while editing without the need for a reload after switching styles.

Props ironprogrammer, mmaattiiaass.
Fixes #62231.



Built from https://develop.svn.wordpress.org/trunk@59260


git-svn-id: http://core.svn.wordpress.org/trunk@58652 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/admin-filters.php

@@ -172,3 +172,4 @@ add_filter( 'list_pages', '_wp_privacy_settings_filter_draft_page_titles', 10, 2
 
 // Font management.
 add_action( 'admin_print_styles', 'wp_print_font_faces', 50 );
+add_action( 'admin_print_styles', 'wp_print_font_faces_from_style_variations', 50 );

wp-includes/block-editor.php

@@ -366,6 +366,7 @@ function _wp_get_iframed_editor_assets() {
 	ob_start();
 	wp_print_styles();
 	wp_print_font_faces();
+	wp_print_font_faces_from_style_variations();
 	$styles = ob_get_clean();
 
 	if ( $has_emoji_styles ) {

wp-includes/fonts.php

@@ -54,6 +54,22 @@ function wp_print_font_faces( $fonts = array() ) {
 	$wp_font_face->generate_and_print( $fonts );
 }
 
+/**
+ * Generates and prints font-face styles defined the the theme style variations.
+ *
+ * @since 6.7.0
+ *
+ */
+function wp_print_font_faces_from_style_variations() {
+	$fonts = WP_Font_Face_Resolver::get_fonts_from_style_variations();
+
+	if ( empty( $fonts ) ) {
+		return;
+	}
+
+	wp_print_font_faces( $fonts );
+}
+
 /**
  * Registers a new font collection in the font library.
  *

wp-includes/fonts/class-wp-font-face-resolver.php

@@ -36,6 +36,38 @@ class WP_Font_Face_Resolver {
 		return static::parse_settings( $settings );
 	}
 
+	/**
+	 * Gets fonts defined in style variations.
+	 *
+	 * @since 6.7.0
+	 *
+	 * @return array Returns an array of font-families.
+	 */
+	public static function get_fonts_from_style_variations() {
+		$variations = WP_Theme_JSON_Resolver::get_style_variations();
+		$fonts      = array();
+
+		if ( empty( $variations ) ) {
+			return $fonts;
+		}
+
+		foreach ( $variations as $variation ) {
+			if ( ! empty( $variation['settings']['typography']['fontFamilies']['theme'] ) ) {
+				$fonts = array_merge( $fonts, $variation['settings']['typography']['fontFamilies']['theme'] );
+			}
+		}
+
+		$settings = array(
+			'typography' => array(
+				'fontFamilies' => array(
+					'theme' => $fonts,
+				),
+			),
+		);
+
+		return static::parse_settings( $settings );
+	}
+
 	/**
 	 * Parse theme.json settings to extract font definitions with variations grouped by font-family.
 	 *

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-beta3-59259';
+$wp_version = '6.7-beta3-59260';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.