function image_imagick_save in Imagick 7

Imagick helper to write an image resource to a destination file.

Parameters

$image: An image object.

$destination: A string file URI or path where the image should be saved.

Return value

TRUE or FALSE, based on success.

See also

image_save()

File

./imagick.module, line 232

Imagick toolkit for image manipulation within Drupal.

Code

function image_imagick_save(stdClass $image, $destination) {
  $res = $image->resource;
  $scheme = file_uri_scheme($destination);

  // Work around lack of stream wrapper support in imagejpeg() and imagepng().
  if ($scheme && file_stream_wrapper_valid_scheme($scheme)) {

    // If destination is not local, save image to temporary local file.
    $local_wrappers = file_get_stream_wrappers(STREAM_WRAPPERS_LOCAL);
    if (!isset($local_wrappers[$scheme])) {
      $permanent_destination = $destination;
      $destination = drupal_tempnam('temporary://', 'imagick_');
    }

    // Convert stream wrapper URI to normal path.
    $destination = drupal_realpath($destination);
  }

  // If preferred format is set, use it as prefix for writeImage
  // If not this will throw a ImagickException exception
  try {
    $image_format = strtolower($res
      ->getImageFormat());
    $destination = implode(':', array(
      $image_format,
      $destination,
    ));
  } catch (ImagickException $e) {
  }

  // Only compress JPEG files because other filetypes will increase in filesize
  if (isset($image_format) && in_array($image_format, array(
    'jpeg',
    'jpg',
  ))) {

    // Use image quality if it has been set by an effect
    $effect_quality = $res
      ->getImageProperty('quality');
    if (!empty($effect_quality)) {
      $res
        ->setImageCompressionQuality($effect_quality);
    }
    else {
      $quality = variable_get('image_jpeg_quality', 80);
      $res
        ->setImageCompressionQuality($quality);
    }
    if (variable_get('imagick_image_optimize', TRUE)) {

      // Using recommendations from Google's Page Speed docs:
      // https://developers.google.com/speed/docs/insights/OptimizeImages .
      $res
        ->setSamplingFactors(array(
        '2x2',
        '1x1',
        '1x1',
      ));
      $res
        ->setColorspace(imagick::COLORSPACE_RGB);
      $res
        ->setInterlaceScheme(imagick::INTERLACE_JPEG);
    }
  }

  // Strip metadata
  if (variable_get('imagick_strip_metadata', FALSE)) {
    $res
      ->stripImage();
  }

  // Write image to destination
  if (isset($image_format) && in_array($image_format, array(
    'gif',
  ))) {
    if (!$res
      ->writeImages($destination, TRUE)) {
      return FALSE;
    }
  }
  else {
    if (!$res
      ->writeImage($destination)) {
      return FALSE;
    }
  }

  // Move temporary local file to remote destination.
  if (isset($permanent_destination)) {
    return (bool) file_unmanaged_move($destination, $permanent_destination, FILE_EXISTS_REPLACE);
  }
  return TRUE;
}