Method begin_move

src/laybasic/laybasic/layEditable.cc:501–585

}

bool 
Editables::begin_move (const db::DPoint &p, lay::angle_constraint_type ac)
{
  cancel_edits ();
  clear_previous_selection ();

  m_move_start = p;
  m_move_transform = db::DFTrans ();

  m_move_selection = false;
  m_any_move_operation = false;

  //  In a first pass evaluate the point selection proximity value to select
  //  those plugins that are close to the given point. 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 (p, lay::Editable::Replace), e));
    }
  }

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

  if (has_selection () && selection_catch_bbox ().contains (p)) {

    //  if anything is selected and we are within the selection bbox, 
    //  issue a move operation on all editables: first try a Partial mode begin_move
    for (std::vector< std::pair<double, iterator> >::const_iterator pi = plugins.begin (); pi != plugins.end (); ++pi) {

      if (pi->second->begin_move (Editable::Partial, p, ac)) {

        //  clear the selection on all other plugins, because we focus on one plugin
        for (std::vector< std::pair<double, iterator> >::const_iterator pii = plugins.begin (); pii != plugins.end (); ++pii) {
          if (pii->second != pi->second) {
            pii->second->select (db::DBox (), lay::Editable::Reset);
          }
        }

        return true;

      }

    }

    //  if something is selected, issue a move operation on all editables
    for (iterator e = begin (); e != end (); ++e) {
      e->begin_move (Editable::Selected, p, ac);
    }

    return true;

  } else {

    //  don't move the selection - clear the existing one first
    clear_selection ();