public function Render::renderImageStyle in Bamboo Twig 8.5

Same name and namespace in other branches

1. 8.2 bamboo_twig_loader/src/TwigExtension/Render.php \Drupal\bamboo_twig_loader\TwigExtension\Render::renderImageStyle()
2. 8.3 bamboo_twig_loader/src/TwigExtension/Render.php \Drupal\bamboo_twig_loader\TwigExtension\Render::renderImageStyle()
3. 8.4 bamboo_twig_loader/src/TwigExtension/Render.php \Drupal\bamboo_twig_loader\TwigExtension\Render::renderImageStyle()

Returns the URL of this image derivative for an original image path or URI.

Parameters

string $path: The path or URI to the original image.

string $style: The image style.

bool $preprocess: Bypass the standard Drupal process to pre-generate the image style.

Return value

string|null The absolute URL where a style image can be downloaded, suitable for use in an <img> tag. Requesting the URL will cause the image to be created. Exceptend when preprocess is enabled, the image will already be available on the fso.

File

bamboo_twig_loader/src/TwigExtension/Render.php, line 150

Class

Render

Provides some renderer as Twig Extensions.

Namespace

Drupal\bamboo_twig_loader\TwigExtension

Code

public function renderImageStyle($path, $style, $preprocess = FALSE) {
  $image_style = $this
    ->getImageStyleStorage()
    ->load($style);

  // Assert the requested style exist, otherwise return null.
  if (!$image_style) {
    return NULL;
  }

  // From an uri or path retrieve an image object.
  $image = $this
    ->getImageFactory()
    ->get($path);

  // Assert the image exist, otherwise return null.
  if (empty($image)) {
    return NULL;
  }

  // Lazy load the fso.
  $fso = $this
    ->getFileSystemObject();

  // Assert the image exist on the file system.
  $image_path = $fso
    ->realpath($image
    ->getSource());
  if (!is_file($image_path)) {
    return NULL;
  }

  // When user want to preprocess the derivated instead of waiting first
  // HTTP call.
  if ($preprocess) {

    /** @var \Drupal\Core\StreamWrapper\StreamWrapperManagerInterface $stream_wrapper_manager */
    $stream_wrapper_manager = $this
      ->getStreamWrapperManager();
    $image_style_uri = $image_style
      ->buildUri($path);

    // Assert the image style doesn't already exist.
    $image_style_path = $fso
      ->realpath($image_style_uri);
    if (!is_file($image_style_path)) {

      // createDerivative need an URI so transform none uri.
      if ($stream_wrapper_manager
        ->isValidUri($path)) {
        $image_uri = $path;
      }
      else {
        $image_uri = file_build_uri($path);
      }

      // Create the new image derivative.
      $image_style
        ->createDerivative($image_uri, $image_style_uri);
      return file_create_url($image_style_uri);
    }
  }
  return $image_style
    ->buildUrl($path);
}