Inside the child theme functions.php file paste this:
/* THEME SETUP
================================================== */
if (!function_exists('sf_joyn_setup')) {
function sf_joyn_setup() {
/* SF THEME OPTION CHECK
================================================== */
if ( get_option( 'sf_theme' ) == false ) {
update_option( 'sf_theme', 'joyn' );
}
/* THEME SUPPORT
================================================== */
add_theme_support( 'structured-post-formats', array('audio', 'gallery', 'image', 'link', 'video') );
add_theme_support( 'post-formats', array('aside', 'chat', 'quote', 'status') );
add_theme_support( 'automatic-feed-links' );
add_theme_support( 'post-thumbnails' );
add_theme_support( 'woocommerce' );
add_theme_support( 'appthemer-crowdfunding', array(
'campaign-edit' => true,
'campaign-featured-image' => true,
'campaign-video' => true,
'campaign-widget' => true,
'campaign-category' => true,
'campaign-tag' => true,
'campaign-type' => true,
'anonymous-backers' => true
) );
add_theme_support( 'swiftframework', array(
'swift-smartscript' => false,
'slideout-menu' => false,
'page-heading-woocommerce' => true,
'pagination-fullscreen' => true,
'bordered-button' => true,
'3drotate-button' => true,
'rounded-button' => false,
'product-inner-heading' => false,
'product-summary-tabs' => true,
'product-layout-opts' => false,
'mobile-shop-filters' => false,
'mobile-logo-override' => true,
'product-multi-masonry' => false,
'super-search-config' => false,
'advanced-row-styling' => false,
'mobile-shop-filters' => false,
'gizmo-icon-font' => true,
'icon-mind-font' => false,
'menu-new-badge' => false,
'advanced-map-styles' => false,
'hamburger-css' => false,
'pushnav-menu' => false,
'split-nav-menu' => false,
'max-mega-menu' => false,
'page-heading-woo-description' => false,
'header-aux-modals' => false,
) );
/* THUMBNAIL SIZES
================================================== */
set_post_thumbnail_size( 220, 150, true);
add_image_size( 'thumb-square', 250, 250, true);
add_image_size( 'thumb-image', 600, 450, true);
add_image_size( 'large-square', 1200, 1200, true);
add_image_size( 'full-width-image-gallery', 1280, 720, true);
/* CONTENT WIDTH
================================================== */
if ( ! isset( $content_width ) ) $content_width = 1140;
/* LOAD THEME LANGUAGE
================================================== */
load_theme_textdomain('swiftframework', SF_TEMPLATE_PATH.'/language');
}
add_action( 'after_setup_theme', 'sf_joyn_setup' );
}
Locate and change the size of this: add_image_size( 'full-width-image-gallery', 1280, 720, true); to a square ratio: add_image_size( 'full-width-image-gallery', 1280, 1280, true);.
You need to use this plugin to rebuild your thumbnails: https://wordpress.org/plugins/regenerate-thumbnails/
