public static function FileBrowserPreview::getFilePreview in File Entity Browser 8

Renders a preview of an arbitrary file.

Parameters

\Drupal\file\FileInterface $file: The file you want to render a preview of.

string $image_style: (Optional) An image style to render the preview in.

Return value

array A render array representing the file preview.

2 calls to FileBrowserPreview::getFilePreview()

FileBrowserController::preview in src/Controller/FileBrowserController.php

Renders a preview of a file for use with File Browser.

FileBrowserPreview::render in src/Plugin/views/field/FileBrowserPreview.php

Renders the field.

File

src/Plugin/views/field/FileBrowserPreview.php, line 66

Class

FileBrowserPreview

Defines a custom field that renders a preview of a file, for the purposes of.

Namespace

Drupal\file_browser\Plugin\views\field

Code

public static function getFilePreview(FileInterface $file, $image_style = '') {

  // Check if this file is an image.
  $image_factory = \Drupal::service('image.factory');

  // Loading large files is slow, make sure it is an image mime type before
  // doing that.
  list($type, ) = explode('/', $file
    ->getMimeType(), 2);
  if ($type == 'image' && ($image = $image_factory
    ->get($file
    ->getFileUri())) && $image
    ->isValid()) {

    // Fake an ImageItem object.
    $item = new \stdClass();
    $item->width = $image
      ->getWidth();
    $item->height = $image
      ->getHeight();
    $item->alt = '';
    $item->title = $file
      ->getFilename();
    $item->entity = $file;
    $build = [
      '#theme' => 'image_formatter',
      '#item' => $item,
      '#image_style' => $image_style,
    ];
  }
  else {
    $path = drupal_get_path('module', 'file_browser');
    $build = [
      '#theme' => 'image',
      '#attributes' => [
        'src' => base_path() . $path . '/images/document_placeholder.svg',
      ],
    ];
  }
  return $build;
}