Method createSaveDocumentOperation

src/app/file/file.cpp:193–443

static

// static
FileOp* FileOp::createSaveDocumentOperation(const Context* context,
                                            const Document* document,
                                            const char* filename,
                                            const char* fn_format_arg)
{
  std::unique_ptr<FileOp> fop(new FileOp(FileOpSave, const_cast<Context*>(context)));

  // Document to save
  fop->m_document = const_cast<Document*>(document);

  // Get the extension of the filename (in lower case)
  std::string extension = base::string_to_lower(base::get_file_extension(filename));

  LOG("Saving document \"%s\" (%s)\n", filename, extension.c_str());

  // Get the format through the extension of the filename
  fop->m_format = FileFormatsManager::instance()
    ->getFileFormatByExtension(extension.c_str());

  if (!fop->m_format ||
      !fop->m_format->support(FILE_SUPPORT_SAVE)) {
    fop->setError("%s can't save \"%s\" files\n", PACKAGE, extension.c_str());
    return fop.release();
  }

  // Warnings
  std::string warnings;
  bool fatal = false;

  // Check image type support
  // TODO add support to automatically convert the image to a supported format
  switch (fop->m_document->sprite()->pixelFormat()) {

    case IMAGE_RGB:
      if (!(fop->m_format->support(FILE_SUPPORT_RGB))) {
        warnings += "<<- RGB format";
        fatal = true;
      }

      if (!(fop->m_format->support(FILE_SUPPORT_RGBA)) &&
          fop->m_document->sprite()->needAlpha()) {

        warnings += "<<- Alpha channel";
      }
      break;

    case IMAGE_GRAYSCALE:
      if (!(fop->m_format->support(FILE_SUPPORT_GRAY))) {
        warnings += "<<- Grayscale format";
        fatal = true;
      }
      if (!(fop->m_format->support(FILE_SUPPORT_GRAYA)) &&
          fop->m_document->sprite()->needAlpha()) {

        warnings += "<<- Alpha channel";
      }
      break;