Method operateLoadTryFormat

src/app/file/file.cpp:445–556

}

bool FileOp::operateLoadTryFormat(IFileOpProgress* progress)
{
  if (!isSequence() || !m_format->support(FILE_SUPPORT_SEQUENCES)) {
    // Direct load from one file.
    return m_format->load(this);
  }

  // Load a sequence
  // Default palette
  m_seq.palette->makeBlack();

  // Load the sequence
  frame_t frames(m_seq.filename_list.size());
  frame_t frame(0);
  Image* old_image = nullptr;

  // TODO set_palette for each frame???
  auto add_image = [&]() {
    m_seq.last_cel->data()->setImage(m_seq.image);
    m_seq.layer->addCel(m_seq.last_cel);

    if (m_document->sprite()->palette(frame)
        ->countDiff(*m_seq.palette, NULL, NULL) > 0) {
      m_seq.palette->setFrame(frame);
      m_document->sprite()->setPalette(*m_seq.palette, true);
    }

    old_image = m_seq.image.get();
    m_seq.image.reset();
    m_seq.last_cel = NULL;
  };

  m_seq.has_alpha = false;
  m_seq.progress_offset = 0.0f;
  m_seq.progress_fraction = 1.0f / (double)frames;

  auto it = m_seq.filename_list.begin(),
    end = m_seq.filename_list.end();
  for (; it != end; ++it) {
    m_filename = it->c_str();

    // Call the "load" procedure to read the first bitmap.
    bool loadres = m_format->load(this);
    if (!loadres) {
      setError("Error loading frame %d from file \"%s\"\n", frame+1, m_filename.c_str());
    }

    // For the first frame...
    if (!old_image) {
      // Error reading the first frame
      if (!loadres || !m_document || !m_seq.last_cel) {
        m_seq.image.reset();
        delete m_document;
        m_document = nullptr;
        break;
      }
      // Read ok
      else {