themes-wordpress/blockbase/inc/customizer/wp-customize-fonts.php

<?php

require_once 'wp-customize-global-styles-setting.php';
require_once 'wp-customize-utils.php';

class GlobalStylesFontsCustomizer {

	private $section_key = 'customize-global-styles-fonts';

	private $font_settings;

	private $font_control_default_body;
	private $font_control_default_heading;

	//Not all fonts support v2 of the API that allows for the shorter URls
	//list of supported fonts: https://fonts.google.com/variablefonts
	private $fonts = array(
		'system-font'       => array(
			'fontFamily' => '-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen-Sans,Ubuntu,Cantarell,"Helvetica Neue",sans-serif',
			'slug'       => 'system-font',
			'name'       => 'System Font',
		),
		'arvo'              => array(
			'fontFamily' => '"Arvo", serif',
			'slug'       => 'arvo',
			'name'       => 'Arvo',
			'google'     => 'family=Arvo:ital,wght@0,400;0,700;1,400;1,700',
		),
		'bodoni-moda'       => array(
			'fontFamily' => '"Bodoni Moda", serif',
			'slug'       => 'bodoni-moda',
			'name'       => 'Bodoni Moda',
			'google'     => 'family=Bodoni+Moda:ital,wght@0,400..900;1,400..900',
		),
		'cabin'             => array(
			'fontFamily' => '"Cabin", sans-serif',
			'slug'       => 'cabin',
			'name'       => 'Cabin',
			'google'     => 'family=Cabin:ital,wght@0,400..700;1,400..700',
		),
		'chivo'             => array(
			'fontFamily' => '"Chivo", sans-serif',
			'slug'       => 'chivo',
			'name'       => 'Chivo',
			'google'     => 'family=Chivo:ital,wght@0,300;0,400;0,700;0,900;1,300;1,400;1,700;1,900',
		),
		'courier-prime'     => array(
			'fontFamily' => '"Courier Prime", serif',
			'slug'       => 'courier-prime',
			'name'       => 'Courier Prime',
			'google'     => 'family=Courier+Prime:ital,wght@0,400;0,700;1,400;1,700',
		),
		'dm-sans'           => array(
			'fontFamily' => '"DM Sans", sans-serif',
			'slug'       => 'dm-sans',
			'name'       => 'DM Sans',
			'google'     => 'family=DM+Sans:ital,wght@0,400;0,500;0,700;1,400;1,500;1,700"',
		),
		'domine'            => array(
			'fontFamily' => '"Domine", serif',
			'slug'       => 'domine',
			'name'       => 'Domine',
			'google'     => 'family=Domine:wght@400..700',
		),
		'eb-garamond'       => array(
			'fontFamily' => '"EB Garamond", serif',
			'slug'       => 'eb-garamond',
			'name'       => 'EB Garamond',
			'google'     => 'family=EB+Garamond:ital,wght@0,400..800;1,400..800',
		),
		'fira-sans'         => array(
			'fontFamily' => '"Fira Sans", sans-serif',
			'slug'       => 'fira-sans',
			'name'       => 'Fira Sans',
			'google'     => 'family=Fira+Sans:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900',
		),
		'inter'             => array(
			'fontFamily' => '"Inter", sans-serif',
			'slug'       => 'inter',
			'name'       => 'Inter',
			'google'     => 'family=Inter:wght@100..900',
		),
		'josefin-sans'      => array(
			'fontFamily' => '"Josefin Sans", sans-serif',
			'slug'       => 'josefin-sans',
			'name'       => 'Josefin Sans',
			'google'     => 'family=Josefin+Sans:ital,wght@0,100..700;1,100..700',
		),
		'libre-baskerville' => array(
			'fontFamily' => '"Libre Baskerville", serif',
			'slug'       => 'libre-baskerville',
			'name'       => 'Libre Baskerville',
			'google'     => 'family=Libre+Baskerville:ital,wght@0,400;0,700;1,400',
		),
		'libre-franklin'    => array(
			'fontFamily' => '"Libre Franklin", sans-serif',
			'slug'       => 'libre-franklin',
			'name'       => 'Libre Franklin',
			'google'     => 'family=Libre+Franklin:ital,wght@0,100..900;1,100..900',
		),
		'lora'              => array(
			'fontFamily' => '"Lora", serif',
			'slug'       => 'lora',
			'name'       => 'Lora',
			'google'     => 'family=Lora:ital,wght@0,400..700;1,400..700',
		),
		'merriweather'      => array(
			'fontFamily' => '"Merriweather", serif',
			'slug'       => 'merriweather',
			'name'       => 'Merriweather',
			'google'     => 'family=Merriweather:ital,wght@0,300;0,400;0,700;0,900;1,300;1,400;1,700;1,900',
		),
		'montserrat'        => array(
			'fontFamily' => '"Montserrat", sans-serif',
			'slug'       => 'montserrat',
			'name'       => 'Montserrat',
			'google'     => 'family=Montserrat:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900',
		),
		'nunito'            => array(
			'fontFamily' => '"Nunito", sans-serif',
			'slug'       => 'nunito',
			'name'       => 'Nunito',
			'google'     => 'family=Nunito:ital,wght@0,200;0,300;0,400;0,600;0,700;0,800;0,900;1,200;1,300;1,400;1,600;1,700;1,800;1,900',
		),
		'open-sans'         => array(
			'fontFamily' => '"Open Sans", sans-serif',
			'slug'       => 'open-sans',
			'name'       => 'Open Sans',
			'google'     => 'family=Open+Sans:ital,wght@0,300;0,400;0,600;0,700;0,800;1,300;1,400;1,600;1,700;1,800',
		),
		'overpass'          => array(
			'fontFamily' => '"Overpass", sans-serif',
			'slug'       => 'overpass',
			'name'       => 'Overpass',
			'google'     => 'family=Overpass:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900',
		),
		'playfair-display'  => array(
			'fontFamily' => '"Playfair Display", serif',
			'slug'       => 'playfair-display',
			'name'       => 'Playfair Display',
			'google'     => 'family=Playfair+Display:ital,wght@0,400..900;1,400..900',
		),
		'poppins'           => array(
			'fontFamily' => '"Poppins", sans-serif',
			'slug'       => 'poppins',
			'name'       => 'Poppins',
			'google'     => 'family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900',
		),
		'raleway'           => array(
			'fontFamily' => '"Raleway", sans-serif',
			'slug'       => 'raleway',
			'name'       => 'Raleway',
			'google'     => 'family=Raleway:ital,wght@0,100..900;1,100..900',
		),
		'red-hat-display'   => array(
			'fontFamily' => '"Red Hat Display", sans-serif',
			'slug'       => 'red-hat-display',
			'name'       => 'Red Hat Display',
			'google'     => 'family=Red+Hat+Display:ital,wght@0,400;0,500;0,700;0,900;1,400;1,500;1,700;1,900',
		),
		'roboto'            => array(
			'fontFamily' => '"Roboto", sans-serif',
			'slug'       => 'roboto',
			'name'       => 'Roboto',
			'google'     => 'family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,800;1,900',
		),
		'roboto-slab'       => array(
			'fontFamily' => '"Roboto Slab", sans-serif',
			'slug'       => 'roboto-slab',
			'name'       => 'Roboto Slab',
			'google'     => 'family=Roboto+Slab:wght@100..900',
		),
		'rubik'             => array(
			'fontFamily' => '"Rubik", sans-serif',
			'slug'       => 'rubik',
			'name'       => 'Rubik',
			'google'     => 'family=Rubik:ital,wght@0,300..900;1,300..900',
		),
		'source-sans-pro'   => array(
			'fontFamily' => '"Source Sans Pro", sans-serif',
			'slug'       => 'source-sans-pro',
			'name'       => 'Source Sans Pro',
			'google'     => 'family=Source+Sans+Pro:ital,wght@0,200;0,300;0,400;0,600;0,700;0,900;1,200;1,300;1,400;1,600;1,700;1,900',
		),
		'source-serif-pro'  => array(
			'fontFamily' => '"Source Serif Pro", serif',
			'slug'       => 'source-serif-pro',
			'name'       => 'Source Serif Pro',
			'google'     => 'family=Source+Serif+Pro:ital,wght@0,200;0,300;0,400;0,600;0,700;0,900;1,200;1,300;1,400;1,600;1,700;1,900',
		),
		'space-mono'        => array(
			'fontFamily' => '"Space Mono", sans-serif',
			'slug'       => 'space-mono',
			'name'       => 'Space Mono',
			'google'     => 'family=Space+Mono:ital,wght@0,400;0,700;1,400;1,700',
		),
		'work-sans'         => array(
			'fontFamily' => '"Work Sans", sans-serif',
			'slug'       => 'work-sans',
			'name'       => 'Work Sans',
			'google'     => 'family=Work+Sans:ital,wght@0,100..900;1,100..900',
		),
	);

	function __construct() {
		add_action( 'customize_register', array( $this, 'initialize' ) );
		add_action( 'customize_preview_init', array( $this, 'handle_customize_preview_init' ) );
		add_action( 'customize_register', array( $this, 'enqueue_google_fonts' ) );
		add_action( 'customize_save_after', array( $this, 'handle_customize_save_after' ) );
		add_action( 'customize_controls_enqueue_scripts', array( $this, 'customize_control_js' ) );
	}

	function handle_customize_preview_init( $wp_customize ) {
		$this->update_font_settings( $wp_customize );
		$this->customize_preview_js( $wp_customize );
		$this->create_customization_style_element( $wp_customize );
	}

	function customize_preview_js( $wp_customize ) {
		if ( $this->fonts && $this->font_settings ) {
			wp_enqueue_script( 'customizer-preview-fonts', get_template_directory_uri() . '/inc/customizer/wp-customize-fonts-preview.js', array( 'customize-preview' ) );
			wp_localize_script( 'customizer-preview-fonts', 'googleFonts', $this->fonts );
			wp_localize_script( 'customizer-preview-fonts', 'fontSettings', $this->font_settings );
		}
	}

	function customize_control_js() {
		if ( $this->font_control_default_body && $this->font_control_default_heading ) {
			wp_enqueue_script( 'customizer-font-control', get_template_directory_uri() . '/inc/customizer/wp-customize-fonts-control.js', array( 'customize-controls' ), null, true );
			wp_localize_script( 'customizer-font-control', 'fontControlDefaultBody', array( $this->font_control_default_body ) );
			wp_localize_script( 'customizer-font-control', 'fontControlDefaultHeading', array( $this->font_control_default_heading ) );
		}
	}

	function enqueue_google_fonts() {
		wp_enqueue_style( 'blockbase-google-fonts', $this->google_fonts_url(), array(), null );
	}

	function create_customization_style_element( $wp_customize ) {
		if ( $this->font_settings ) {
			wp_enqueue_style( 'global-styles-fonts-customizations', ' ', array( 'global-styles' ) ); // This needs to load after global_styles, hence the dependency
			$css  = 'body {';
			$css .= '--wp--preset--font-family--body-font:' . $this->font_settings['body'] . ';';
			$css .= '--wp--preset--font-family--heading-font:' . $this->font_settings['heading'] . ';';
			$css .= '}';
			wp_add_inline_style( 'global-styles-fonts-customizations', $css );
		}
	}

	function update_font_settings( $wp_customize ) {
		$body_setting = $wp_customize->get_setting( $this->section_key . 'body' );
		$heading_setting = $wp_customize->get_setting( $this->section_key . 'heading' );
		if ( $body_setting && $heading_setting ) {
			$body_value = $body_setting->post_value();
			if ( $body_value ) {
				$body_font_setting           = $this->fonts[ $body_value ];
				$this->font_settings['body'] = $body_font_setting['fontFamily'];
			}

			$heading_value = $heading_setting->post_value();
			if ( $heading_value ) {
				$heading_font_setting           = $this->fonts[ $heading_value ];
				$this->font_settings['heading'] = $heading_font_setting['fontFamily'];
			}
		}
	}

	function google_fonts_url() {
		$font_families = array();
		foreach ( $this->fonts as $font ) {
			if ( ! empty( $font['google'] ) ) {
				$font_families[] = $font['google'];
			}
		}
		$font_families[] = 'display=swap';

		// Make a single request for the theme fonts.
		return esc_url_raw( 'https://fonts.googleapis.com/css2?' . implode( '&', $font_families ) );
	}

	function initialize( $wp_customize ) {
		$theme       = wp_get_theme();

		//Add a Section to the Customizer for these bits
		$wp_customize->add_section(
			$this->section_key,
			array(
				'capability'  => 'edit_theme_options',
				'description' => sprintf( __( 'Font Customization for %1$s', 'blockbase' ), $theme->name ),
				'title'       => __( 'Fonts', 'blockbase' ),
			)
		);

		$merged_json = WP_Theme_JSON_Resolver_Gutenberg::get_merged_data()->get_raw_data();
		$theme_font_families = $merged_json['settings']['typography']['fontFamilies']['theme'];
		$body_font_default_array = array_filter( $theme_font_families, function( $font_family ) {
			return $font_family['slug'] === "body-font";
		} );
		$body_font_default = array_shift( $body_font_default_array );
		$heading_font_default_array = array_filter( $theme_font_families, function( $font_family ) {
			return $font_family['slug'] === "heading-font";
		} );
		$heading_font_default = array_shift( $heading_font_default_array );

		// See if the child theme has been updated. If not then show a notice.
		if ( ! $body_font_default && ! $heading_font_default ) {
			$wp_customize->add_control(
				$this->section_key . '-v1-blockbase-format-notice',
				array(
					'type'        => 'hidden',
					'description' => '<div class="notice notice-warning">
					<p>' . __( "Your theme needs to be updated before you can customize fonts", 'blockbase' ) . '</p>
					</div>',
					'settings'    => array(),
					'section'     => $this->section_key,
				)
			);

			return;
		}

		if ( array_key_exists( 'user', $merged_json['settings']['typography']['fontFamilies'] ) ) {
			$merged_font_families = $merged_json['settings']['typography']['fontFamilies']['user'];
			$body_font_selected_array = array_filter( $merged_font_families, function( $font_family ) {
				return $font_family['slug'] === "body-font";
			} );
			$body_font_selected = array_shift( $body_font_selected_array );

			$heading_font_selected_array = array_filter( $merged_font_families, function( $font_family ) {
				return $font_family['slug'] === "heading-font";
			} );
			$heading_font_selected = array_shift( $heading_font_selected_array );
		} else {
			$body_font_selected = $body_font_default;
			$heading_font_selected = $heading_font_default;
		}

		// If there's no selected font then the user is probably using the old format for font customization
		if ( $body_font_selected && $heading_font_selected ) {
			$body_font_selected_font_family = $body_font_selected['fontFamily'];
			$body_font_selected_font_slug = $body_font_selected['fontSlug'];
			$heading_font_selected_font_family = $heading_font_selected['fontFamily'];
			$heading_font_selected_font_slug = $heading_font_selected['fontSlug'];
		} else {
			$body_font_selected_font_family = null;
			$body_font_selected_font_slug = null;
			$heading_font_selected_font_family = null;
			$heading_font_selected_font_slug = null;
		}

		$this->font_settings = array(
			'body'    => $body_font_selected_font_family,
			'heading' => $heading_font_selected_font_family,
		);

		// Add a reset button
		$this->font_control_default_body    = $body_font_default['fontSlug'];
		$this->font_control_default_heading = $heading_font_default['fontSlug'];
		$wp_customize->add_control(
			$this->section_key . '-reset-button',
			array(
				'type'        => 'button',
				'settings'    => array(),
				'section'     => $this->section_key,
				'input_attrs' => array(
					'value' => __( 'Reset to Default', 'blockbase' ),
					'class' => 'button button-link',
				),
			)
		);

		$this->add_setting_and_control( $wp_customize, 'body', __( 'Body font', 'blockbase' ), $body_font_default['fontSlug'], $body_font_selected_font_slug, 'sanitize_title' );
		$this->add_setting_and_control( $wp_customize, 'heading', __( 'Heading font', 'blockbase' ), $heading_font_default['fontSlug'], $heading_font_selected_font_slug, 'sanitize_title' );
	}

	function get_font_family( $array, $configuration ) {
		$variable = get_settings_array( $array, $configuration );
		$slug     = preg_replace( '/var\(--wp--preset--font-family--(.*)\)/', '$1', $variable );
		if ( ! isset( $this->fonts[ $slug ] ) ) {
			$this->fonts[ $slug ] = $this->build_font_from_theme_data( $slug, $configuration );
		}
		return $this->fonts[ $slug ];
	}

	function build_font_from_theme_data( $slug, $configuration ) {
		$new_font      = array();
		$font_families = $configuration['settings']['typography']['fontFamilies']['theme'];
		foreach ( $font_families as $font_family ) {
			if ( $font_family['slug'] === $slug ) {
				$new_font['fontFamily'] = $font_family['fontFamily'];
				$new_font['name']       = $font_family['name'];
				if ( ! empty( $font_family['google'] ) ) {
					$new_font['google'] = $font_family['google'];
				}
			}
		}
		$new_font['slug'] = $slug;
		return $new_font;
	}

	function add_setting_and_control( $wp_customize, $name, $label, $default, $user_value, $sanitize_callback ) {
		$setting_name          = $this->section_key . $name;
		$global_styles_setting = new WP_Customize_Global_Styles_Setting(
			$wp_customize,
			$setting_name,
			array(
				'default'           => $default,
				'user_value'        => $user_value
			)
		);
		$wp_customize->add_setting( $global_styles_setting,
			array(
				'sanitize_callback' => $sanitize_callback
			)
		);

		$choices = array();
		foreach ( $this->fonts as $font_slug => $font_setting ) {
			$choices[ $font_slug ] = $font_setting['name'];
		}

		$wp_customize->add_control(
			$setting_name,
			array(
				'section' => $this->section_key,
				'label'   => $label,
				'type'    => 'select',
				'choices' => $choices,
			)
		);

		// Update the setting to the dirty value.
		// This is needed to preserve the settings when other Customizer settings change.
		$dirty_value = $wp_customize->get_setting( $setting_name )->post_value();
		if ( ! empty( $dirty_value ) ) {
			$wp_customize->get_setting( $setting_name )->user_value = $dirty_value;
		}
	}

	function handle_customize_save_after( $wp_customize ) {
		$body_value    = $wp_customize->get_setting( $this->section_key . 'body' )->value();
		$heading_value = $wp_customize->get_setting( $this->section_key . 'heading' )->value();

		if ( ! isset( $body_value ) && ! isset( $heading_value ) ) {
			return;
		}

		$body_default    = $wp_customize->get_setting( $this->section_key . 'body' )->default;
		$heading_default = $wp_customize->get_setting( $this->section_key . 'heading' )->default;

		if ( ! isset( $body_value ) ) {
			$body_value = $body_default;
		}

		if ( ! isset( $heading_value ) ) {
			$heading_value = $heading_default;
		}

		$body_setting = $this->fonts[ $body_value ];
		$body_setting['name'] = "Body (" . $body_setting['name'] . ")";
		$body_setting['fontSlug'] = $body_setting['slug'];
		$body_setting['slug'] = "body-font";

		$heading_setting = $this->fonts[ $heading_value ];
		$heading_setting['name'] = "Heading (" . $heading_setting['name'] . ")";
		$heading_setting['fontSlug'] = $heading_setting['slug'];
		$heading_setting['slug'] = "heading-font";

		// Set up variables for the theme.json.
		$font_families = array(
			$body_setting,
			$heading_setting,
		);

		$body_font_family_variable    = 'var(--wp--preset--font-family--' . $body_setting['slug'] . ')';
		$heading_font_family_variable = 'var(--wp--preset--font-family--' . $heading_setting['slug'] . ')';

		// Get the user's theme.json from the CPT.
		$user_custom_post_type_id     = WP_Theme_JSON_Resolver_Gutenberg::get_user_custom_post_type_id();
		$user_theme_json_post         = get_post( $user_custom_post_type_id );
		$user_theme_json_post_content = json_decode( $user_theme_json_post->post_content );

		// Set meta settings.
		$user_theme_json_post_content->version                     = 1;
		$user_theme_json_post_content->isGlobalStylesUserThemeJSON = true;

		// Set the typography settings.
		$user_theme_json_post_content = set_settings_array(
			$user_theme_json_post_content,
			array( 'settings', 'typography', 'fontFamilies' ),
			$font_families
		);

		//If the typeface choices === the default then we remove it instead
		if ( $body_value === $body_default && $heading_value === $heading_default ) {
			unset( $user_theme_json_post_content->settings->typography->fontFamilies );

			// These lines need to stay for backwards compatibility.
			unset( $user_theme_json_post_content->styles->typography->fontFamily );
			unset( $user_theme_json_post_content->styles->elements->h1->typography->fontFamily );
			unset( $user_theme_json_post_content->styles->elements->h2->typography->fontFamily );
			unset( $user_theme_json_post_content->styles->elements->h3->typography->fontFamily );
			unset( $user_theme_json_post_content->styles->elements->h4->typography->fontFamily );
			unset( $user_theme_json_post_content->styles->elements->h5->typography->fontFamily );
			unset( $user_theme_json_post_content->styles->elements->h6->typography->fontFamily );
			unset( $user_theme_json_post_content->styles->blocks->{'core/button'}->typography->fontFamily );
			unset( $user_theme_json_post_content->styles->blocks->{'core/post-title'}->typography->fontFamily );
			unset( $user_theme_json_post_content->styles->blocks->{'core/pullquote'}->typography->fontFamily );
		}

		// Update the theme.json with the new settings.
		$user_theme_json_post->post_content = json_encode( $user_theme_json_post_content );
		wp_update_post( $user_theme_json_post );
		delete_transient( 'global_styles' );
		delete_transient( 'gutenberg_global_styles' );
		delete_transient( 'gutenberg_global_styles_' . get_stylesheet() );
	}

}

new GlobalStylesFontsCustomizer;