public function PhotosImageFile::derivative in Album Photos 6.0.x

Generate image style derivatives and return image file URL.

Originally added to create private image style derivatives.

Parameters

string $uri: File URI.

string $style_name: Image style name.

string $scheme: File system scheme.

Return value

string The image URL.

File

src/PhotosImageFile.php, line 140

Class

PhotosImageFile

Create images object.

Namespace

Drupal\photos

Code

public function derivative($uri, $style_name, $scheme = 'private') {

  // @todo adapt this to work with all file system scheme options.
  // Load the image style configuration entity.
  $style = ImageStyle::load($style_name);

  // Create URI with fid_{fid}.
  $pathInfo = pathinfo($uri);
  $ext = strtolower($pathInfo['extension']);

  // Set temporary file destination.
  $destination = $scheme . '://photos/tmp_images/' . $style_name . '/image_' . $this->fid . '.' . $ext;

  // Create image file.
  $style
    ->createDerivative($uri, $destination);

  // Return URL.
  return file_create_url($destination);
}