Method transient_select

src/laybasic/laybasic/layEditable.cc:251–313

}

void 
Editables::transient_select (const db::DPoint &pt)
{
  bool same_point = (m_last_selected_point.is_point () && m_last_selected_point.center ().sq_double_distance (pt) < 1e-10);
  if (! same_point) {
    clear_previous_selection ();
  }

  //  in a first pass evaluate the point selection proximity value to select
  //  those plugins that are active. This code is a copy of the code for the single-point selection below.

  std::vector< std::pair <double, iterator> > plugins;

  for (iterator e = begin (); e != end (); ++e) {
    if (m_enabled.find (&*e) != m_enabled.end ()) {
      plugins.push_back (std::make_pair (e->click_proximity (pt, lay::Editable::Replace), e));
    }
  }

  //  sort the plugins found by the proximity
  std::sort (plugins.begin (), plugins.end (), first_of_pair_cmp_f<double, iterator> ());

  //  and call select on those objects until the first one (with the least proximity)
  //  has something selected
  std::vector< std::pair<double, iterator> >::const_iterator pi = plugins.begin (); 
  for ( ; pi != plugins.end (); ++pi) {
    if (pi->second->transient_select (pt)) {
      break;
    }
  }

  //  if no plugin has selected anything, try a reset (clear previous selection) and select again: this is supposed 
  //  to implement the cycling protocol which allows the plugins to cycle through different
  //  selections for repeated clicks on the same point. Let this happen for replace mode 
  //  only because otherwise clearing the selection does not make sense.
  if (same_point && pi == plugins.end ()) {

    clear_previous_selection ();

    plugins.clear ();

    for (iterator e = begin (); e != end (); ++e) {
      if (m_enabled.find (&*e) != m_enabled.end ()) {
        plugins.push_back (std::make_pair (e->click_proximity (pt, lay::Editable::Replace), e));
      }
    }

    //  sort the plugins found by the proximity
    std::sort (plugins.begin (), plugins.end (), first_of_pair_cmp_f<double, iterator> ());

    for (pi = plugins.begin (); pi != plugins.end (); ++pi) {
      if (pi->second->transient_select (pt)) {
        break;
      }
    }

  }