diff options
Diffstat (limited to 'wp-includes/fonts/class-wp-font-face-resolver.php')
-rw-r--r-- | wp-includes/fonts/class-wp-font-face-resolver.php | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/wp-includes/fonts/class-wp-font-face-resolver.php b/wp-includes/fonts/class-wp-font-face-resolver.php new file mode 100644 index 0000000..125ff6a --- /dev/null +++ b/wp-includes/fonts/class-wp-font-face-resolver.php @@ -0,0 +1,178 @@ +<?php +/** + * WP_Font_Face_Resolver class. + * + * @package WordPress + * @subpackage Fonts + * @since 6.4.0 + */ + +/** + * The Font Face Resolver abstracts the processing of different data sources + * (such as theme.json) for processing within the Font Face. + * + * This class is for internal core usage and is not supposed to be used by + * extenders (plugins and/or themes). + * + * @access private + */ +class WP_Font_Face_Resolver { + + /** + * Gets fonts defined in theme.json. + * + * @since 6.4.0 + * + * @return array Returns the font-families, each with their font-face variations. + */ + public static function get_fonts_from_theme_json() { + $settings = wp_get_global_settings(); + + // Bail out early if there are no font settings. + if ( empty( $settings['typography']['fontFamilies'] ) ) { + return array(); + } + + return static::parse_settings( $settings ); + } + + /** + * Parse theme.json settings to extract font definitions with variations grouped by font-family. + * + * @since 6.4.0 + * + * @param array $settings Font settings to parse. + * @return array Returns an array of fonts, grouped by font-family. + */ + private static function parse_settings( array $settings ) { + $fonts = array(); + + foreach ( $settings['typography']['fontFamilies'] as $font_families ) { + foreach ( $font_families as $definition ) { + + // Skip if "fontFace" is not defined, meaning there are no variations. + if ( empty( $definition['fontFace'] ) ) { + continue; + } + + // Skip if "fontFamily" is not defined. + if ( empty( $definition['fontFamily'] ) ) { + continue; + } + + $font_family_name = static::maybe_parse_name_from_comma_separated_list( $definition['fontFamily'] ); + + // Skip if no font family is defined. + if ( empty( $font_family_name ) ) { + continue; + } + + // Prepare the fonts array structure for this font-family. + if ( ! array_key_exists( $font_family_name, $fonts ) ) { + $fonts[ $font_family_name ] = array(); + } + + $fonts[ $font_family_name ] = static::convert_font_face_properties( $definition['fontFace'], $font_family_name ); + } + } + + return $fonts; + } + + /** + * Parse font-family name from comma-separated lists. + * + * If the given `fontFamily` is a comma-separated lists (example: "Inter, sans-serif" ), + * parse and return the fist font from the list. + * + * @since 6.4.0 + * + * @param string $font_family Font family `fontFamily' to parse. + * @return string Font-family name. + */ + private static function maybe_parse_name_from_comma_separated_list( $font_family ) { + if ( str_contains( $font_family, ',' ) ) { + $font_family = explode( ',', $font_family )[0]; + } + + return trim( $font_family, "\"'" ); + } + + /** + * Converts font-face properties from theme.json format. + * + * @since 6.4.0 + * + * @param array $font_face_definition The font-face definitions to convert. + * @param string $font_family_property The value to store in the font-face font-family property. + * @return array Converted font-face properties. + */ + private static function convert_font_face_properties( array $font_face_definition, $font_family_property ) { + $converted_font_faces = array(); + + foreach ( $font_face_definition as $font_face ) { + // Add the font-family property to the font-face. + $font_face['font-family'] = $font_family_property; + + // Converts the "file:./" src placeholder into a theme font file URI. + if ( ! empty( $font_face['src'] ) ) { + $font_face['src'] = static::to_theme_file_uri( (array) $font_face['src'] ); + } + + // Convert camelCase properties into kebab-case. + $font_face = static::to_kebab_case( $font_face ); + + $converted_font_faces[] = $font_face; + } + + return $converted_font_faces; + } + + /** + * Converts each 'file:./' placeholder into a URI to the font file in the theme. + * + * The 'file:./' is specified in the theme's `theme.json` as a placeholder to be + * replaced with the URI to the font file's location in the theme. When a "src" + * beings with this placeholder, it is replaced, converting the src into a URI. + * + * @since 6.4.0 + * + * @param array $src An array of font file sources to process. + * @return array An array of font file src URI(s). + */ + private static function to_theme_file_uri( array $src ) { + $placeholder = 'file:./'; + + foreach ( $src as $src_key => $src_url ) { + // Skip if the src doesn't start with the placeholder, as there's nothing to replace. + if ( ! str_starts_with( $src_url, $placeholder ) ) { + continue; + } + + $src_file = str_replace( $placeholder, '', $src_url ); + $src[ $src_key ] = get_theme_file_uri( $src_file ); + } + + return $src; + } + + /** + * Converts all first dimension keys into kebab-case. + * + * @since 6.4.0 + * + * @param array $data The array to process. + * @return array Data with first dimension keys converted into kebab-case. + */ + private static function to_kebab_case( array $data ) { + foreach ( $data as $key => $value ) { + $kebab_case = _wp_to_kebab_case( $key ); + $data[ $kebab_case ] = $value; + if ( $kebab_case !== $key ) { + unset( $data[ $key ] ); + } + } + + return $data; + } +} |