146 lines
3.7 KiB
PHP
146 lines
3.7 KiB
PHP
<?php
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/**
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* Adds the Webfont Loader to load fonts asyncronously.
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*
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* @package Kirki
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* @category Core
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* @author Ari Stathopoulos (@aristath)
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* @copyright Copyright (c) 2020, David Vongries
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* @license https://opensource.org/licenses/MIT
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* @since 3.0
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*/
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/**
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* Manages the way Google Fonts are enqueued.
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*/
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final class Kirki_Modules_Webfonts_Async {
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/**
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* The config ID.
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*
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* @access protected
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* @since 3.0.0
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* @var string
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*/
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protected $config_id;
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/**
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* The Kirki_Modules_Webfonts object.
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*
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* @access protected
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* @since 3.0.0
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* @var object
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*/
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protected $webfonts;
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/**
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* The Kirki_Fonts_Google object.
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*
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* @access protected
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* @since 3.0.0
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* @var object
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*/
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protected $googlefonts;
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/**
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* Fonts to load.
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*
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* @access protected
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* @since 3.0.26
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* @var array
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*/
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protected $fonts_to_load = array();
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/**
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* Constructor.
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*
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* @access public
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* @since 3.0
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* @param string $config_id The config-ID.
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* @param object $webfonts The Kirki_Modules_Webfonts object.
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* @param object $googlefonts The Kirki_Fonts_Google object.
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* @param array $args Extra args we want to pass.
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*/
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public function __construct( $config_id, $webfonts, $googlefonts, $args = array() ) {
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$this->config_id = $config_id;
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$this->webfonts = $webfonts;
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$this->googlefonts = $googlefonts;
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add_action( 'wp_head', array( $this, 'webfont_loader' ) );
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add_action( 'wp_head', array( $this, 'webfont_loader_script' ), 30 );
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// Add these in the dashboard to support editor-styles.
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add_action( 'admin_enqueue_scripts', array( $this, 'webfont_loader' ) );
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add_action( 'admin_enqueue_scripts', array( $this, 'webfont_loader_script' ), 30 );
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add_filter( 'wp_resource_hints', array( $this, 'resource_hints' ), 10, 2 );
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}
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/**
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* Add preconnect for Google Fonts.
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*
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* @access public
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* @param array $urls URLs to print for resource hints.
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* @param string $relation_type The relation type the URLs are printed.
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* @return array $urls URLs to print for resource hints.
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*/
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public function resource_hints( $urls, $relation_type ) {
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$fonts_to_load = $this->googlefonts->fonts;
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if ( ! empty( $fonts_to_load ) && 'preconnect' === $relation_type ) {
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$urls[] = array(
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'href' => 'https://fonts.gstatic.com',
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'crossorigin',
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);
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}
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return $urls;
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}
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/**
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* Webfont Loader for Google Fonts.
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*
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* @access public
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* @since 3.0.0
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*/
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public function webfont_loader() {
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// Go through our fields and populate $this->fonts.
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$this->webfonts->loop_fields( $this->config_id );
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$this->googlefonts->fonts = apply_filters( 'kirki_enqueue_google_fonts', $this->googlefonts->fonts );
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// Goes through $this->fonts and adds or removes things as needed.
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$this->googlefonts->process_fonts();
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foreach ( $this->googlefonts->fonts as $font => $weights ) {
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foreach ( $weights as $key => $value ) {
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if ( 'italic' === $value ) {
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$weights[ $key ] = '400i';
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} else {
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$weights[ $key ] = str_replace( array( 'regular', 'bold', 'italic' ), array( '400', '', 'i' ), $value );
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}
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}
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$this->fonts_to_load[] = $font . ':' . join( ',', $weights ) . ':cyrillic,cyrillic-ext,devanagari,greek,greek-ext,khmer,latin,latin-ext,vietnamese,hebrew,arabic,bengali,gujarati,tamil,telugu,thai';
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}
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if ( ! empty( $this->fonts_to_load ) ) {
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Kirki_Modules_Webfont_Loader::$load = true;
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}
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}
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/**
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* Webfont Loader script for Google Fonts.
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*
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* @access public
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* @since 3.0.0
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*/
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public function webfont_loader_script() {
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if ( ! empty( $this->fonts_to_load ) ) {
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wp_add_inline_script(
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'webfont-loader',
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'WebFont.load({google:{families:[\'' . join( '\', \'', $this->fonts_to_load ) . '\']}});',
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'after'
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);
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}
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}
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}
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