ImageStyle::buildUrl

public ImageStyle::buildUrl($path, $clean_urls = NULL)

public function buildUrl($path, $clean_urls = NULL) {
  $uri = $this->buildUri($path);
  // The token query is added even if the
  // 'image.settings:allow_insecure_derivatives' configuration is TRUE, so
  // that the emitted links remain valid if it is changed back to the default
  // FALSE. However, sites which need to prevent the token query from being
  // emitted at all can additionally set the
  // 'image.settings:suppress_itok_output' configuration to TRUE to achieve
  // that (if both are set, the security token will neither be emitted in the
  // image derivative URL nor checked for in
  // \Drupal\image\ImageStyleInterface::deliver()).
  $token_query = array();
  if (!\Drupal::config('image.settings')->get('suppress_itok_output')) {
    // The passed $path variable can be either a relative path or a full URI.
    $original_uri = file_uri_scheme($path) ? file_stream_wrapper_uri_normalize($path) : file_build_uri($path);
    $token_query = array(IMAGE_DERIVATIVE_TOKEN => $this->getPathToken($original_uri));
  }

  if ($clean_urls === NULL) {
    // Assume clean URLs unless the request tells us otherwise.
    $clean_urls = TRUE;
    try {
      $request = \Drupal::request();
      $clean_urls = RequestHelper::isCleanUrl($request);
    }
    catch (ServiceNotFoundException $e) {
    }
  }

  // If not using clean URLs, the image derivative callback is only available
  // with the script path. If the file does not exist, use Url::fromUri() to
  // ensure that it is included. Once the file exists it's fine to fall back
  // to the actual file path, this avoids bootstrapping PHP once the files are
  // built.
  if ($clean_urls === FALSE && file_uri_scheme($uri) == 'public' && !file_exists($uri)) {
    $directory_path = $this->getStreamWrapperManager()->getViaUri($uri)->getDirectoryPath();
    return Url::fromUri('base:' . $directory_path . '/' . file_uri_target($uri), array('absolute' => TRUE, 'query' => $token_query))->toString();
  }

  $file_url = file_create_url($uri);
  // Append the query string with the token, if necessary.
  if ($token_query) {
    $file_url .= (strpos($file_url, '?') !== FALSE ? '&' : '?') . UrlHelper::buildQuery($token_query);
  }

  return $file_url;
}