init

wp-content/plugins/jetpack/modules/theme-tools/site-logo.php

@@ -0,0 +1,86 @@
+<?php
+/**
+ * Theme Tools: Site Logo.
+ *
+ * @see https://jetpack.com/support/site-logo/
+ *
+ * This feature will only be activated for themes that declare their support.
+ * This can be done by adding code similar to the following during the
+ * 'after_setup_theme' action:
+ *
+ * $args = array(
+ *  'header-text' => array(
+ *      'site-title',
+ *      'site-description',
+ *  ),
+ *  'size' => 'medium',
+ * );
+ * add_theme_support( 'site-logo', $args );
+ *
+ * @package automattic/jetpack
+ */
+
+/**
+ * Activate the Site Logo plugin.
+ *
+ * @uses current_theme_supports()
+ * @since 3.2.0
+ * @since 9.9.0 Uses Core site_logo option format universally.
+ */
+function site_logo_init() {
+	// Only load our code if our theme declares support, and the standalone plugin is not activated.
+	if ( current_theme_supports( 'site-logo' ) && ! class_exists( 'Site_Logo', false ) ) {
+		_deprecated_hook( 'site-logo', '13.4', 'custom-logo', 'Jetpack no longer supports site-logo feature. Add custom-logo support to your theme instead: https://developer.wordpress.org/themes/functionality/custom-logo/' );
+		// Load our class for namespacing.
+		if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
+			// wpcom handles the image sizes differently.
+			require_once WPMU_PLUGIN_DIR . '/site-logo/inc/class-site-logo.php';
+		} else {
+			require __DIR__ . '/site-logo/inc/class-site-logo.php';
+		}
+
+		// Load template tags.
+		require __DIR__ . '/site-logo/inc/functions.php';
+
+		// Load backwards-compatible template tags.
+		require __DIR__ . '/site-logo/inc/compat.php';
+	}
+}
+add_action( 'init', 'site_logo_init' );
+
+/**
+ * When switching from a legacy theme that uses `site-logo` to a theme that uses `custom-logo`,
+ * update the theme's custom logo if it doesn't already have one.
+ *
+ * @return void
+ */
+function jetpack_update_custom_logo_from_site_logo() {
+	$site_logo = get_option( 'site_logo' );
+
+	if ( current_theme_supports( 'custom-logo' ) && ! get_theme_mod( 'custom_logo' ) && $site_logo ) {
+		set_theme_mod( 'custom_logo', $site_logo );
+	}
+}
+add_action( 'after_switch_theme', 'jetpack_update_custom_logo_from_site_logo', 10, 0 );
+
+/**
+ * Transforms the legacy site_logo array, when present, into an attachment ID.
+ *
+ * The attachment ID is the format used for the site_logo option by the Site Logo block,
+ * and the updated Jetpack site-logo feature.
+ *
+ * @since 9.9.0
+ *
+ * @param int|array $site_logo Option.
+ * @return int
+ */
+function jetpack_site_logo_block_compat( $site_logo ) {
+	if ( isset( $site_logo['id'] ) ) {
+		remove_filter( 'option_site_logo', 'jetpack_site_logo_block_compat', 1 );
+		update_option( 'site_logo', $site_logo['id'] );
+		return $site_logo['id'];
+	}
+
+	return $site_logo;
+}
+add_filter( 'option_site_logo', 'jetpack_site_logo_block_compat', 1 );