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<?php
/**
* Helper class for font settings.
*
* @package Astra
* @author Astra
* @copyright Copyright (c) 2020, Astra
* @link https://wpastra.com/
* @since Astra 1.0.0
*/
// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Astra Fonts
*/
final class Astra_Fonts {
/**
* Get fonts to generate.
*
* @since 1.0.0
* @var array $fonts
*/
private static $fonts = array();
/**
* Adds data to the $fonts array for a font to be rendered.
*
* @since 1.0.0
* @param string $name The name key of the font to add.
* @param array $variants An array of weight variants.
* @return void
*/
public static function add_font( $name, $variants = array() ) {
if ( 'inherit' == $name ) {
return;
}
if ( ! is_array( $variants ) ) {
// For multiple variant selectons for fonts.
$variants = explode( ',', str_replace( 'italic', 'i', $variants ) );
}
if ( is_array( $variants ) ) {
$key = array_search( 'inherit', $variants );
if ( false !== $key ) {
unset( $variants[ $key ] );
if ( ! in_array( 400, $variants ) ) {
$variants[] = 400;
}
}
} elseif ( 'inherit' == $variants ) {
$variants = 400;
}
if ( isset( self::$fonts[ $name ] ) ) {
foreach ( (array) $variants as $variant ) {
if ( ! in_array( $variant, self::$fonts[ $name ]['variants'] ) ) {
self::$fonts[ $name ]['variants'][] = $variant;
}
}
} else {
self::$fonts[ $name ] = array(
'variants' => (array) $variants,
);
}
}
/**
* Get Fonts
*/
public static function get_fonts() {
do_action( 'astra_get_fonts' );
return apply_filters( 'astra_add_fonts', self::$fonts );
}
/**
* Renders the <link> tag for all fonts in the $fonts array.
*
* @since 1.0.16 Added the filter 'astra_render_fonts' to support custom fonts.
* @since 1.0.0
* @return void
*/
public static function render_fonts() {
$font_list = apply_filters( 'astra_render_fonts', self::get_fonts() );
$google_fonts = array();
$font_subset = array();
$system_fonts = Astra_Font_Families::get_system_fonts();
foreach ( $font_list as $name => $font ) {
if ( ! empty( $name ) && ! isset( $system_fonts[ $name ] ) ) {
// Add font variants.
$google_fonts[ $name ] = $font['variants'];
// Add Subset.
$subset = apply_filters( 'astra_font_subset', '', $name );
if ( ! empty( $subset ) ) {
$font_subset[] = $subset;
}
}
}
$google_font_url = self::google_fonts_url( $google_fonts, $font_subset );
// Do not load Google font remote or local font asset if not any font selected.
if ( '' === $google_font_url ) {
return;
}
/**
* Support self hosted Google Fonts.
*
* @since 3.6.0
*/
if ( astra_get_option( 'load-google-fonts-locally' ) && ! is_customize_preview() && ! is_admin() ) {
if ( astra_get_option( 'preload-local-fonts' ) ) {
ast_load_preload_local_fonts( $google_font_url );
}
wp_enqueue_style( 'astra-google-fonts', ast_get_webfont_url( $google_font_url ), array(), ASTRA_THEME_VERSION, 'all' );
} else {
wp_enqueue_style( 'astra-google-fonts', $google_font_url, array(), ASTRA_THEME_VERSION, 'all' );
}
}
/**
* Google Font URL
* Combine multiple google font in one URL
*
* @link https://shellcreeper.com/?p=1476
* @param array $fonts Google Fonts array.
* @param array $subsets Font's Subsets array.
*
* @return string
*/
public static function google_fonts_url( $fonts, $subsets = array() ) {
/* URL */
$base_url = 'https://fonts.googleapis.com/css';
$font_args = array();
$family = array();
// This is deprecated filter hook.
$fonts = apply_filters( 'astra_google_fonts', $fonts );
$fonts = apply_filters( 'astra_google_fonts_selected', $fonts );
/* Format Each Font Family in Array */
foreach ( $fonts as $font_name => $font_weight ) {
$font_name = str_replace( ' ', '+', $font_name );
if ( ! empty( $font_weight ) ) {
if ( is_array( $font_weight ) ) {
$font_weight = implode( ',', $font_weight );
}
$font_family = explode( ',', $font_name );
$font_family = str_replace( "'", '', astra_get_prop( $font_family, 0 ) );
$family[] = trim( $font_family . ':' . rawurlencode( trim( $font_weight ) ) );
} else {
$family[] = trim( $font_name );
}
}
/* Only return URL if font family defined. */
if ( ! empty( $family ) ) {
/* Make Font Family a String */
$family = implode( '|', $family );
/* Add font family in args */
$font_args['family'] = $family;
/* Add font subsets in args */
if ( ! empty( $subsets ) ) {
/* format subsets to string */
if ( is_array( $subsets ) ) {
$subsets = implode( ',', $subsets );
}
$font_args['subset'] = rawurlencode( trim( $subsets ) );
}
$font_args['display'] = astra_get_fonts_display_property();
return add_query_arg( $font_args, $base_url );
}
return '';
}
}
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