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<?php
/**
* A simple object containing properties for fonts.
*
* @package Kirki
* @category Core
* @author Aristeides Stathopoulos
* @copyright Copyright (c) 2017, Aristeides Stathopoulos
* @license http://opensource.org/licenses/https://opensource.org/licenses/MIT
* @since 1.0
*/
/**
* The Kirki_Fonts object.
*/
final class Kirki_Fonts {
/**
* The mode we'll be using to add google fonts.
* This is a todo item, not yet functional.
*
* @static
* @todo
* @access public
* @var string
*/
public static $mode = 'link';
/**
* Holds a single instance of this object.
*
* @static
* @access private
* @var null|object
*/
private static $instance = null;
/**
* An array of our google fonts.
*
* @static
* @access public
* @var null|object
*/
public static $google_fonts = null;
/**
* The class constructor.
*/
private function __construct() {}
/**
* Get the one, true instance of this class.
* Prevents performance issues since this is only loaded once.
*
* @return object Kirki_Fonts
*/
public static function get_instance() {
if ( null === self::$instance ) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Compile font options from different sources.
*
* @return array All available fonts.
*/
public static function get_all_fonts() {
$standard_fonts = self::get_standard_fonts();
$google_fonts = self::get_google_fonts();
return apply_filters( 'kirki/fonts/all', array_merge( $standard_fonts, $google_fonts ) );
}
/**
* Return an array of standard websafe fonts.
*
* @return array Standard websafe fonts.
*/
public static function get_standard_fonts() {
$standard_fonts = array(
'serif' => array(
'label' => 'Serif',
'stack' => 'Georgia,Times,"Times New Roman",serif',
),
'sans-serif' => array(
'label' => 'Sans Serif',
'stack' => '-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif',
),
'monospace' => array(
'label' => 'Monospace',
'stack' => 'Monaco,"Lucida Sans Typewriter","Lucida Typewriter","Courier New",Courier,monospace',
),
);
return apply_filters( 'kirki/fonts/standard_fonts', $standard_fonts );
}
/**
* Return an array of backup fonts based on the font-category
*
* @return array
*/
public static function get_backup_fonts() {
$backup_fonts = array(
'sans-serif' => 'Helvetica, Arial, sans-serif',
'serif' => 'Georgia, serif',
'display' => '"Comic Sans MS", cursive, sans-serif',
'handwriting' => '"Comic Sans MS", cursive, sans-serif',
'monospace' => '"Lucida Console", Monaco, monospace',
);
return apply_filters( 'kirki/fonts/backup_fonts', $backup_fonts );
}
/**
* Return an array of all available Google Fonts.
*
* @return array All Google Fonts.
*/
public static function get_google_fonts() {
if ( null === self::$google_fonts || empty( self::$google_fonts ) ) {
$fonts = include_once wp_normalize_path( dirname( __FILE__ ) . '/webfonts.php' );
$google_fonts = array();
if ( is_array( $fonts ) ) {
foreach ( $fonts['items'] as $font ) {
$google_fonts[ $font['family'] ] = array(
'label' => $font['family'],
'variants' => $font['variants'],
'subsets' => $font['subsets'],
'category' => $font['category'],
);
}
}
self::$google_fonts = apply_filters( 'kirki/fonts/google_fonts', $google_fonts );
}
return self::$google_fonts;
}
/**
* Dummy function to avoid issues with backwards-compatibility.
* This is not functional, but it will prevent PHP Fatal errors.
*
* @static
* @access public
*/
public static function get_google_font_uri() {}
/**
* Returns an array of all available subsets.
*
* @static
* @access public
* @return array
*/
public static function get_google_font_subsets() {
return array(
'cyrillic' => 'Cyrillic',
'cyrillic-ext' => 'Cyrillic Extended',
'devanagari' => 'Devanagari',
'greek' => 'Greek',
'greek-ext' => 'Greek Extended',
'khmer' => 'Khmer',
'latin' => 'Latin',
'latin-ext' => 'Latin Extended',
'vietnamese' => 'Vietnamese',
'hebrew' => 'Hebrew',
'arabic' => 'Arabic',
'bengali' => 'Bengali',
'gujarati' => 'Gujarati',
'tamil' => 'Tamil',
'telugu' => 'Telugu',
'thai' => 'Thai',
);
}
/**
* Returns an array of all available variants.
*
* @static
* @access public
* @return array
*/
public static function get_all_variants() {
return array(
'100' => esc_attr__( 'Ultra-Light 100', 'kirki' ),
'100light' => esc_attr__( 'Ultra-Light 100', 'kirki' ),
'100italic' => esc_attr__( 'Ultra-Light 100 Italic', 'kirki' ),
'200' => esc_attr__( 'Light 200', 'kirki' ),
'200italic' => esc_attr__( 'Light 200 Italic', 'kirki' ),
'300' => esc_attr__( 'Book 300', 'kirki' ),
'300italic' => esc_attr__( 'Book 300 Italic', 'kirki' ),
'400' => esc_attr__( 'Normal 400', 'kirki' ),
'regular' => esc_attr__( 'Normal 400', 'kirki' ),
'italic' => esc_attr__( 'Normal 400 Italic', 'kirki' ),
'500' => esc_attr__( 'Medium 500', 'kirki' ),
'500italic' => esc_attr__( 'Medium 500 Italic', 'kirki' ),
'600' => esc_attr__( 'Semi-Bold 600', 'kirki' ),
'600bold' => esc_attr__( 'Semi-Bold 600', 'kirki' ),
'600italic' => esc_attr__( 'Semi-Bold 600 Italic', 'kirki' ),
'700' => esc_attr__( 'Bold 700', 'kirki' ),
'700italic' => esc_attr__( 'Bold 700 Italic', 'kirki' ),
'800' => esc_attr__( 'Extra-Bold 800', 'kirki' ),
'800bold' => esc_attr__( 'Extra-Bold 800', 'kirki' ),
'800italic' => esc_attr__( 'Extra-Bold 800 Italic', 'kirki' ),
'900' => esc_attr__( 'Ultra-Bold 900', 'kirki' ),
'900bold' => esc_attr__( 'Ultra-Bold 900', 'kirki' ),
'900italic' => esc_attr__( 'Ultra-Bold 900 Italic', 'kirki' ),
);
}
/**
* Determine if a font-name is a valid google font or not.
*
* @static
* @access public
* @param string $fontname The name of the font we want to check.
* @return bool
*/
public static function is_google_font( $fontname ) {
return ( array_key_exists( $fontname, self::$google_fonts ) );
}
/**
* Gets available options for a font.
*
* @static
* @access public
* @return array
*/
public static function get_font_choices() {
$fonts = self::get_all_fonts();
$fonts_array = array();
foreach ( $fonts as $key => $args ) {
$fonts_array[ $key ] = $key;
}
return $fonts_array;
}
}