/**
* {@inheritdoc}
*/
public static function generateSampleValue(FieldDefinitionInterface $field_definition)
{
$random = new Random();
$settings = $field_definition->getSettings();
static $images = array();
$min_resolution = empty($settings['min_resolution']) ? '100x100' : $settings['min_resolution'];
$max_resolution = empty($settings['max_resolution']) ? '600x600' : $settings['max_resolution'];
$extensions = array_intersect(explode(' ', $settings['file_extensions']), array('png', 'gif', 'jpg', 'jpeg'));
$extension = array_rand(array_combine($extensions, $extensions));
// Generate a max of 5 different images.
if (!isset($images[$extension][$min_resolution][$max_resolution]) || count($images[$extension][$min_resolution][$max_resolution]) <= 5) {
$tmp_file = drupal_tempnam('temporary://', 'generateImage_');
$destination = $tmp_file . '.' . $extension;
file_unmanaged_move($tmp_file, $destination, FILE_CREATE_DIRECTORY);
if ($path = $random->image(drupal_realpath($destination), $min_resolution, $max_resolution)) {
$image = File::create();
$image->setFileUri($path);
$image->setOwnerId(\Drupal::currentUser()->id());
$image->setMimeType(\Drupal::service('file.mime_type.guesser')->guess($path));
$image->setFileName(drupal_basename($path));
$destination_dir = static::doGetUploadLocation($settings);
file_prepare_directory($destination_dir, FILE_CREATE_DIRECTORY);
$destination = $destination_dir . '/' . basename($path);
$file = file_move($image, $destination, FILE_CREATE_DIRECTORY);
$images[$extension][$min_resolution][$max_resolution][$file->id()] = $file;
} else {
return array();
}
} else {
// Select one of the images we've already generated for this field.
$image_index = array_rand($images[$extension][$min_resolution][$max_resolution]);
$file = $images[$extension][$min_resolution][$max_resolution][$image_index];
}
list($width, $height) = getimagesize($file->getFileUri());
$values = array('target_id' => $file->id(), 'alt' => $random->sentences(4), 'title' => $random->sentences(4), 'width' => $width, 'height' => $height);
return $values;
}
