InfoBoxLine::InfoBoxLine(char format_char, const std::string& text_) :
  lineType(get_linetype_by_format_char(format_char)),
  font(get_font_by_format_char(format_char)),
  color(get_color_by_format_char(format_char)),
  text(text_),
  image()
{
  if (lineType == IMAGE)
  {
    image = Surface::create(text);
  }
}
std::vector<std::unique_ptr<InfoBoxLine> >
InfoBoxLine::split(const std::string& text, float width)
{
  std::vector<std::unique_ptr<InfoBoxLine> > lines;

  std::string::size_type i = 0;
  std::string::size_type l;
  char format_char = '#';
  while(i < text.size()) {
    // take care of empty lines - represent them as blank lines of normal text
    if (text[i] == '\n') {
      lines.emplace_back(new InfoBoxLine('\t', ""));
      i++;
      continue;
    }

    // extract the format_char
    format_char = text[i];
    i++;
    if (i >= text.size()) break;

    // extract one line
    l = text.find("\n", i);
    if (l == std::string::npos) l=text.size();
    std::string s = text.substr(i, l-i);
    i = l+1;

    // if we are dealing with an image, just store the line
    if (format_char == '!') {
      lines.emplace_back(new InfoBoxLine(format_char, s));
      continue;
    }

    // append wrapped parts of line into list
    std::string overflow;
    do {
      FontPtr font = get_font_by_format_char(format_char);
      std::string s2 = s;
      if (font) s2 = font->wrap_to_width(s2, width, &overflow);
      lines.emplace_back(new InfoBoxLine(format_char, s2));
      s = overflow;
    } while (s.length() > 0);
  }

  return lines;
}