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<?php |
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class Kirki_GoogleFonts_Manager { |
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/** |
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* The one true instance of this object |
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*/ |
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private static $instance = null; |
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/** |
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* All requested subsets |
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*/ |
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public static $subsets = array(); |
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/** |
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* Additional font-weights |
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*/ |
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public static $font_weights = array(); |
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/** |
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* The font-families including their font-weights and subsets |
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*/ |
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protected static $fonts = array(); |
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/** |
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* Get the one, true instance of this class. |
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* If the class has not yet been instantiated then we create a new instance. |
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* |
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* @return Kirki_Google_Fonts_Manager object |
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*/ |
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public static function get_instance() { |
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if ( null === self::$instance ) { |
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self::$instance = new self(); |
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} |
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return self::$instance; |
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} |
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/** |
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* adds a font and specifies its properties |
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*/ |
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public static function add_font( $family = '', $weight = 400, $style = '', $subsets = array( 'latin' ) ) { |
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// Early exit if font-family is empty |
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if ( '' == $family ) { |
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return; |
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} |
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$google_fonts = Kirki_Fonts::get_google_fonts(); |
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// Make sure the class is instantiated |
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self::get_instance(); |
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$family = esc_attr( $family ); |
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// Determine if this is indeed a google font or not. |
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$is_google_font = false; |
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if ( array_key_exists( $family, $google_fonts ) ) { |
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$is_google_font = true; |
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} |
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// If we're not dealing with a valid google font then we can exit. |
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if ( ! $is_google_font ) { |
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return; |
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} |
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// Get all valid font variants for this font |
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$font_variants = array(); |
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if ( isset( $google_fonts[ $family ]['variants'] ) ) { |
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$font_variants = $google_fonts[ $family ]['variants']; |
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} |
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// format the requested variant |
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$requested_variant = $weight . $style; |
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// Is this a valid variant for this font? |
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$variant_is_valid = false; |
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if ( in_array( $requested_variant, $font_variants ) ) { |
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$variant_is_valid = true; |
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} |
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// Get all available subsets for this font |
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$font_subsets = array(); |
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if ( isset( $google_fonts[ $family ]['subsets'] ) ) { |
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$font_subsets = $google_fonts[ $family ]['subsets']; |
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} |
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// Get the valid subsets for this font |
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$requested_subsets = array_intersect( $subsets, $font_subsets ); |
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// If this font only has 1 subset, then use it. |
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if ( 1 == count( $font_subsets ) ) { |
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$requested_subsets = $font_subsets; |
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} |
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self::$fonts[ $family ] = array( |
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'subsets' => $requested_subsets, |
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); |
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if ( ! isset( self::$fonts[ $family ]['variants'] ) ) { |
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self::$fonts[ $family ]['variants'] = array(); |
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} |
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if ( $variant_is_valid ) { |
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self::$fonts[ $family ]['variants'][] =$requested_variant; |
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} |
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} |
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108
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} |
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aristath /
kirki
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