array(IMAGE_THUMBNAIL)); return $options; } /** * Extends the field's basic options with more image specific options. */ function options_form(&$form, &$form_state) { parent::options_form($form, $form_state); // Overwrite the descendants option so the text is relevant. $form['descendants']['#description'] = theme('advanced_help_topic', 'image_gallery', 'descendants') . t('Whether to go into subgalleries when getting a cover image. Either: consider only this gallery itself, consider subgalleries all together, or recurse into subgalleries one by one if the gallery itself is empty.'); $form['descendants']['#options'] = array( 'single' => t('Only get cover image from this gallery'), 'flat' => t('Consider subgalleries, flattened.'), 'recurse' => t('Consider subgalleries, recursively. (Warning: this can produce many queries per row if your parent galleries are empty!).'), ); foreach (image_get_sizes() as $key => $size) { $sizes[$key] = $size['label']; } $form['image_derivative'] = array( '#type' => 'select', '#title' => t('Image size to show'), '#options' => $sizes, '#default_value' => $this->options['image_derivative'], '#description' => t('Pick an image derivative to display.'), ); } /** * Returns field html. */ function render($values) { $nid = $this->get_cover_node_nid($values); $latest_node = node_load($nid); $output = image_display($latest_node, $this->options['image_derivative']); $output = $this->render_link($output, $values); // Wrap a common class so the thumbnail can be style no matter what field. // TODO: theme function? return '

' . $output . '

'; } }