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<?php
/**
* Fonts functions.
*
* @package WordPress
* @subpackage Fonts
* @since 6.4.0
*/
/**
* Generates and prints font-face styles for given fonts or theme.json fonts.
*
* @since 6.4.0
*
* @param array[][] $fonts {
* Optional. The font-families and their font faces. Default empty array.
*
* @type array ...$0 {
* An indexed or associative (keyed by font-family) array of font variations for this font-family.
* Each font face has the following structure.
*
* @type array ...$0 {
* The font face properties.
*
* @type string $font-family The font-family property.
* @type string|string[] $src The URL(s) to each resource containing the font data.
* @type string $font-style Optional. The font-style property. Default 'normal'.
* @type string $font-weight Optional. The font-weight property. Default '400'.
* @type string $font-display Optional. The font-display property. Default 'fallback'.
* @type string $ascent-override Optional. The ascent-override property.
* @type string $descent-override Optional. The descent-override property.
* @type string $font-stretch Optional. The font-stretch property.
* @type string $font-variant Optional. The font-variant property.
* @type string $font-feature-settings Optional. The font-feature-settings property.
* @type string $font-variation-settings Optional. The font-variation-settings property.
* @type string $line-gap-override Optional. The line-gap-override property.
* @type string $size-adjust Optional. The size-adjust property.
* @type string $unicode-range Optional. The unicode-range property.
* }
* }
* }
*/
function wp_print_font_faces( $fonts = array() ) {
if ( empty( $fonts ) ) {
$fonts = WP_Font_Face_Resolver::get_fonts_from_theme_json();
}
if ( empty( $fonts ) ) {
return;
}
$wp_font_face = new WP_Font_Face();
$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.
*
* See {@link https://schemas.wp.org/trunk/font-collection.json} for the schema
* the font collection data must adhere to.
*
* @since 6.5.0
*
* @param string $slug Font collection slug. May only contain alphanumeric characters, dashes,
* and underscores. See sanitize_title().
* @param array $args {
* Font collection data.
*
* @type string $name Required. Name of the font collection shown in the Font Library.
* @type string $description Optional. A short descriptive summary of the font collection. Default empty.
* @type array|string $font_families Required. Array of font family definitions that are in the collection,
* or a string containing the path or URL to a JSON file containing the font collection.
* @type array $categories Optional. Array of categories, each with a name and slug, that are used by the
* fonts in the collection. Default empty.
* }
* @return WP_Font_Collection|WP_Error A font collection if it was registered
* successfully, or WP_Error object on failure.
*/
function wp_register_font_collection( string $slug, array $args ) {
return WP_Font_Library::get_instance()->register_font_collection( $slug, $args );
}
/**
* Unregisters a font collection from the Font Library.
*
* @since 6.5.0
*
* @param string $slug Font collection slug.
* @return bool True if the font collection was unregistered successfully, else false.
*/
function wp_unregister_font_collection( string $slug ) {
return WP_Font_Library::get_instance()->unregister_font_collection( $slug );
}
/**
* Retrieves font uploads directory information.
*
* Same as wp_font_dir() but "light weight" as it doesn't attempt to create the font uploads directory.
* Intended for use in themes, when only 'basedir' and 'baseurl' are needed, generally in all cases
* when not uploading files.
*
* @since 6.5.0
*
* @see wp_font_dir()
*
* @return array See wp_font_dir() for description.
*/
function wp_get_font_dir() {
return wp_font_dir( false );
}
/**
* Returns an array containing the current fonts upload directory's path and URL.
*
* @since 6.5.0
*
* @param bool $create_dir Optional. Whether to check and create the font uploads directory. Default true.
* @return array {
* Array of information about the font upload directory.
*
* @type string $path Base directory and subdirectory or full path to the fonts upload directory.
* @type string $url Base URL and subdirectory or absolute URL to the fonts upload directory.
* @type string $subdir Subdirectory
* @type string $basedir Path without subdir.
* @type string $baseurl URL path without subdir.
* @type string|false $error False or error message.
* }
*/
function wp_font_dir( $create_dir = true ) {
/*
* Allow extenders to manipulate the font directory consistently.
*
* Ensures the upload_dir filter is fired both when calling this function
* directly and when the upload directory is filtered in the Font Face
* REST API endpoint.
*/
add_filter( 'upload_dir', '_wp_filter_font_directory' );
$font_dir = wp_upload_dir( null, $create_dir, false );
remove_filter( 'upload_dir', '_wp_filter_font_directory' );
return $font_dir;
}
/**
* A callback function for use in the {@see 'upload_dir'} filter.
*
* This function is intended for internal use only and should not be used by plugins and themes.
* Use wp_get_font_dir() instead.
*
* @since 6.5.0
* @access private
*
* @param string $font_dir The font directory.
* @return string The modified font directory.
*/
function _wp_filter_font_directory( $font_dir ) {
if ( doing_filter( 'font_dir' ) ) {
// Avoid an infinite loop.
return $font_dir;
}
$font_dir = array(
'path' => untrailingslashit( $font_dir['basedir'] ) . '/fonts',
'url' => untrailingslashit( $font_dir['baseurl'] ) . '/fonts',
'subdir' => '',
'basedir' => untrailingslashit( $font_dir['basedir'] ) . '/fonts',
'baseurl' => untrailingslashit( $font_dir['baseurl'] ) . '/fonts',
'error' => false,
);
/**
* Filters the fonts directory data.
*
* This filter allows developers to modify the fonts directory data.
*
* @since 6.5.0
*
* @param array $font_dir {
* Array of information about the font upload directory.
*
* @type string $path Base directory and subdirectory or full path to the fonts upload directory.
* @type string $url Base URL and subdirectory or absolute URL to the fonts upload directory.
* @type string $subdir Subdirectory
* @type string $basedir Path without subdir.
* @type string $baseurl URL path without subdir.
* @type string|false $error False or error message.
* }
*/
return apply_filters( 'font_dir', $font_dir );
}
/**
* Deletes child font faces when a font family is deleted.
*
* @access private
* @since 6.5.0
*
* @param int $post_id Post ID.
* @param WP_Post $post Post object.
*/
function _wp_after_delete_font_family( $post_id, $post ) {
if ( 'wp_font_family' !== $post->post_type ) {
return;
}
$font_faces_ids = get_children(
array(
'post_parent' => $post_id,
'post_type' => 'wp_font_face',
'fields' => 'ids',
)
);
foreach ( $font_faces_ids as $font_faces_id ) {
wp_delete_post( $font_faces_id, true );
}
}
/**
* Deletes associated font files when a font face is deleted.
*
* @access private
* @since 6.5.0
*
* @param int $post_id Post ID.
* @param WP_Post $post Post object.
*/
function _wp_before_delete_font_face( $post_id, $post ) {
if ( 'wp_font_face' !== $post->post_type ) {
return;
}
$font_files = get_post_meta( $post_id, '_wp_font_face_file', false );
$font_dir = untrailingslashit( wp_get_font_dir()['basedir'] );
foreach ( $font_files as $font_file ) {
wp_delete_file( $font_dir . '/' . $font_file );
}
}
/**
* Register the default font collections.
*
* @access private
* @since 6.5.0
*/
function _wp_register_default_font_collections() {
wp_register_font_collection(
'google-fonts',
array(
'name' => _x( 'Google Fonts', 'font collection name' ),
'description' => __( 'Install from Google Fonts. Fonts are copied to and served from your site.' ),
'font_families' => 'https://s.w.org/images/fonts/wp-7.0/collections/google-fonts-with-preview.json',
'categories' => array(
array(
'name' => _x( 'Sans Serif', 'font category' ),
'slug' => 'sans-serif',
),
array(
'name' => _x( 'Display', 'font category' ),
'slug' => 'display',
),
array(
'name' => _x( 'Serif', 'font category' ),
'slug' => 'serif',
),
array(
'name' => _x( 'Handwriting', 'font category' ),
'slug' => 'handwriting',
),
array(
'name' => _x( 'Monospace', 'font category' ),
'slug' => 'monospace',
),
),
)
);
}