tripal/tripal_ds/tripal_ds.module

<?php

require_once "includes/tripal_ds.inc";
require_once "includes/tripal_ds.ds.inc";

function tripal_ds_init() {
  drupal_add_css(drupal_get_path('module', 'tripal_ds') . '/theme/css/tripaldsfeature.css');
}

/**
 * Implements hook_ds_layout_info() to define layouts from code in a module for
 * display suite
 */
function tripal_ds_ds_layout_info() {
  $path = drupal_get_path('module', 'tripal_ds');

  $layouts = array(
    'tripal_ds_feature' => array(
      'label' => t('Tripal Feature Layout'),
      'path' => $path . '/theme/templates',
      'regions' => array(
        'top' => t('Top'),
        'left' => t('Left'),
        'right' => t('Right'),
        'bottom' => t('Bottom'),
      ),
      'css' => TRUE,
    ),
  );

  return $layouts;
}

/*
* General preprocess function to determine the HOOK for the subsequent preprocess functions
* to target fields

function tripal_ds_preprocess(&$vars, $hook) {
  if (isset($vars['elements']['#entity_type'])) {
    $function = __FUNCTION__ . '_' . $vars['elements']['#entity_type'];
    if (function_exists($function)) {
      $function($vars, $hook);
    }
  }
}
*/
/**
 * Implements hook_bundle_postcreate().
 *
 * This is a Triapl defined hook and is called in the TripalBundle::create()
 * function to allow modules to perform tasks when a bundle is created.
 */
function tripal_ds_bundle_postcreate($bundle) {
  $bundle_name = $bundle->name;
  $instances = field_info_instances('TripalEntity', $bundle_name);
  _ds_layout_settings_info($bundle_name, $instances);
}