Method save_image_with_options

src/laybasic/laybasic/layLayoutViewBase.cc:3162–3190

#if defined(HAVE_QT) && !defined(PREFER_LIBPNG_FOR_SAVE)
void
LayoutViewBase::save_image_with_options (const std::string &fn,
                                         unsigned int width, unsigned int height, int linewidth, int oversampling, double resolution, double font_resolution,
                                         tl::Color background, tl::Color foreground, tl::Color active, const db::DBox &target_box, bool monochrome)
{
  tl::SelfTimer timer (tl::verbosity () >= 11, tl::to_string (tr ("Save image")));

  QImageWriter writer (tl::to_qstring (fn), QByteArray ("PNG"));

  lay::Viewport vp (width, height, mp_canvas->viewport ().target_box ());
  std::vector<std::pair<std::string, std::string> > texts = png_texts (this, vp.box ());
  for (auto i = texts.begin (); i != texts.end (); ++i) {
    writer.setText (tl::to_qstring (i->first), tl::to_qstring (i->second));
  }

  refresh ();

  if (monochrome) {
    if (! writer.write (mp_canvas->image_with_options_mono (width, height, linewidth, background, foreground, active, target_box).to_image ())) {
      throw tl::Exception (tl::to_string (tr ("Unable to write screenshot to file: %s (%s)")), fn, tl::to_string (writer.errorString ()));
    }
  } else {
    if (! writer.write (mp_canvas->image_with_options (width, height, linewidth, oversampling, resolution, font_resolution, background, foreground, active, target_box).to_image ())) {
      throw tl::Exception (tl::to_string (tr ("Unable to write screenshot to file: %s (%s)")), fn, tl::to_string (writer.errorString ()));
    }
  }

  tl::log << "Saved image to " << fn;
}
#elif defined(HAVE_PNG)
void
LayoutViewBase::save_image_with_options (const std::string &fn,