Genesis Home Page

wrapper.php

<?php


//Add in Wrap Content Widget Areas

function genesischild_fullwrap_widgets() {
    if(is_home() && is_front_page()) {
        register_sidebar( array(
            'name' => __( 'TopWrap', 'genesis' ),
            'id' => 'topwrap',
            'description' => __( 'TopWrap', 'genesis' ),
            'before_widget' => '<div class="wrap topwrap">',
            'after_widget' => '</div>',
        ) );
        register_sidebar( array(
            'name' => __( 'OptinWrap', 'genesis' ),
            'id' => 'optinwrap',
            'description' => __( 'OptinWrap', 'genesis' ),
            'before_widget' => '<div class="wrap optinwrap">',
            'after_widget' => '</div>',

        ) );
        register_sidebar( array(
            'name' => __( 'BottomWrap', 'genesis' ),
            'id' => 'bottomwrap',
            'description' => __( 'BottomWrap', 'genesis' ),
            'before_widget' => '<div class="wrap botwrap">',
            'after_widget' => '</div>',
        ) );
    }

 }
add_action( 'widgets_init', 'genesischild_fullwrap_widgets' );

You could also do something like this for before_widget:

 'before_widget' => sprintf( '<div %s>', genesis_attr( 'topwrap' ) ),

Then you can filter the before widget classes

add_filter( 'genesis_attr_full-wrap', 'brw_genesis_attr_full_wrap' );
function brw_genesis_attr_full_wrap( $attributes ){
    $attributes['class'] =  $attributes['class'] . ' ' . 'wrap';
    return $attributes;
}

There's also genesis_widget_area which I think does something similar to that extent.