function file_entity_image_dimensions in D7 Media 7

Retrieve the dimensions of an image file and store them in the {image dimensions} table.

Parameters

$file: A file object.

$force: TRUE if the image dimensions should always be loaded from the actual file even if $file->image_dimensions is already set.

Return value

The image dimensions as an array with the 'width' and 'height' properties. The array is also added to $file as its image_dimensions property. If the image dimensions cannot be read, the 'width' and 'height' properties will be NULL. If $file is either empty or not an image file, FALSE is returned.

3 calls to file_entity_image_dimensions()

file_entity_file_insert in file_entity/file_entity.module

Implements hook_file_insert().

file_entity_file_load in file_entity/file_entity.module

Implements hook_file_load().

file_entity_file_update in file_entity/file_entity.module

Implement hook_file_update().

File

file_entity/file_entity.module, line 255

Extends Drupal file entities to be fieldable and viewable.

Code

function file_entity_image_dimensions($file, $force = FALSE) {

  // Prevent PHP notices when trying to read empty files.
  // @see http://drupal.org/node/681042
  if (!$file->filesize) {
    return;
  }

  // Do not bother proceeding if this file does not have an image mime type.
  if (strpos($file->filemime, 'image/') !== 0) {
    return;
  }

  // Return the existing $file->image_dimensions unless a reload is forced.
  if (!$force && isset($file->image_dimensions)) {
    return $file->image_dimensions;
  }

  // We have a non-empty image file.
  $image_info = image_get_info($file->uri);
  if ($image_info) {
    $file->image_dimensions = array(
      'width' => $image_info['width'],
      'height' => $image_info['height'],
    );
    db_merge('image_dimensions')
      ->key(array(
      'fid' => $file->fid,
    ))
      ->fields(array(
      'width' => $file->image_dimensions['width'],
      'height' => $file->image_dimensions['height'],
    ))
      ->execute();
  }
  else {

    // Fallback to NULL values.
    $file->image_dimensions = array(
      'width' => NULL,
      'height' => NULL,
    );
  }
}