first import

sites/all/modules/custom_formatters/includes/image.inc

@@ -0,0 +1,63 @@
+<?php
+/**
+ * @file
+ * Image module integration.
+ */
+
+/**
+ * Implements hook_custom_formatters_theme_alter() on behalf of image.module.
+ */
+function image_custom_formatters_theme_alter(&$theme) {
+  $theme['custom_formatters_image_styles'] = array(
+    'render element' => 'element',
+    'file' => 'includes/image.inc',
+  );
+}
+
+/**
+ * Implements hook_custom_formatters_element_info_alter() on behalf of
+ * image.module.
+ */
+function image_custom_formatters_element_info_alter(&$types) {
+  $types['custom_formatters_image_styles'] =  array(
+    '#input' => TRUE,
+    '#multiple' => FALSE,
+    '#process' => array('form_process_select', 'ajax_process_form'),
+    '#theme' => 'custom_formatters_image_styles',
+    '#theme_wrappers' => array('form_element'),
+  );
+}
+
+/**
+ * Implements hook_custom_formatters_form_builder_types_alter() on behalf of
+ * image.module.
+ */
+function image_custom_formatters_form_builder_types_alter(&$fields) {
+  $fields['image_styles'] = array(
+    'title' => t('Image styles'),
+    'properties' => array(
+      'title',
+      'description',
+      'default_value',
+      'required',
+      'key',
+    ),
+    'default' => array(
+      '#title' => t('New styles selector'),
+      '#type' => 'custom_formatters_image_styles',
+      '#multiple_toggle' => TRUE,
+    ),
+  );
+}
+
+/**
+ * Theme callback for Custom Formatters Image Styles element.
+ */
+function theme_custom_formatters_image_styles($variables) {
+  $element = $variables['element'];
+  $element['#options'] = image_style_options();
+  element_set_attributes($element, array('id', 'name', 'size'));
+  _form_set_class($element, array('form-select'));
+
+  return '<select' . drupal_attributes($element['#attributes']) . '>' . form_select_options($element) . '</select>';
+}