function node_gallery_get_images_slice in Node Gallery 6.3

Returns a specific slice of the node_gallery_get_images() array. If both $to_left and $to_right are not set or are 0, this returns only 1 element.

Parameters

$gallery: Node object representing the gallery

$image_nid: Nid of the current image

$to_left: Integer representing the first position to return

$to_right: Integer representing the last position to return

1 call to node_gallery_get_images_slice()

node_gallery_json_get_images in ./node_gallery.pages.inc

Page callback for json image object requests.

File

./node_gallery.inc, line 440

Shared functions for node_gallery

Code

function node_gallery_get_images_slice($gallery, $image_nid, $to_left = 0, $to_right = 0) {
  $images = node_gallery_get_images($gallery);
  $last_element = count($images) - 1;
  $range = array();
  $current_element = node_gallery_get_image_position($gallery->nid, $image_nid) - 1;
  $offset = $current_element - $to_left < 0 ? 0 : $current_element - $to_left;
  $end = $current_element + $to_right > $last_element ? $last_element : $current_element + $to_right;
  $length = $end - $offset + 1;
  $range = array_slice($images, $offset, $length);
  return $range;
}