Method readDimensions

src/preview.cpp:431–456

}

bool LoaderNative::readDimensions() {
  if (!valid())
    return false;
  if (width_ != 0 || height_ != 0)
    return true;

  const DataBuf data = getData();
  if (data.empty())
    return false;

  try {
    auto image = ImageFactory::open(data.c_data(), data.size());
    if (!image)
      return false;
    image->readMetadata();

    width_ = image->pixelWidth();
    height_ = image->pixelHeight();
  } catch (const Error& /* error */) {
#ifndef SUPPRESS_WARNINGS
    EXV_WARNING << "Invalid native preview image.\n";
#endif
    return false;
  }
  return true;
}

LoaderExifJpeg::LoaderExifJpeg(PreviewId id, const Image& image, int parIdx) : Loader(id, image) {
  const ExifData& exifData = image_.exifData();