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editor_selection.cc

/*
    Copyright (C) 2000-2006 Paul Davis 

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include <pbd/stacktrace.h>

#include <ardour/diskstream.h>
#include <ardour/playlist.h>
#include <ardour/route_group.h>

#include "editor.h"
#include "actions.h"
#include "audio_time_axis.h"
#include "audio_region_view.h"
#include "audio_streamview.h"
#include "automation_line.h"

#include "i18n.h"

using namespace std;
using namespace sigc;
using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;
using namespace Glib;
using namespace Gtkmm2ext;
using namespace Editing;

struct TrackViewByPositionSorter
{
    bool operator() (const TimeAxisView* a, const TimeAxisView *b) {
          return a->y_position < b->y_position;
    }
};

bool
Editor::extend_selection_to_track (TimeAxisView& view)
{
      if (selection->selected (&view)) {
            /* already selected, do nothing */
            return false;
      }

      if (selection->tracks.empty()) {

            if (!selection->selected (&view)) {
                  selection->set (&view);
                  return true;
            } else {
                  return false;
            }
      } 

      /* something is already selected, so figure out which range of things to add */
      
      TrackViewList to_be_added;
      TrackViewList sorted = track_views;
      TrackViewByPositionSorter cmp;
      bool passed_clicked = false;
      bool forwards = true;

      sorted.sort (cmp);

      if (!selection->selected (&view)) {
            to_be_added.push_back (&view);
      }

      /* figure out if we should go forward or backwards */

      for (TrackViewList::iterator i = sorted.begin(); i != sorted.end(); ++i) {

            if ((*i) == &view) {
                  passed_clicked = true;
            }

            if (selection->selected (*i)) {
                  if (passed_clicked) {
                        forwards = true;
                  } else {
                        forwards = false;
                  }
                  break;
            }
      }
                  
      passed_clicked = false;

      if (forwards) {

            for (TrackViewList::iterator i = sorted.begin(); i != sorted.end(); ++i) {
                              
                  if ((*i) == &view) {
                        passed_clicked = true;
                        continue;
                  }
                              
                  if (passed_clicked) {
                        if ((*i)->hidden()) {
                              continue;
                        }
                        if (selection->selected (*i)) {
                              break;
                        } else if (!(*i)->hidden()) {
                              to_be_added.push_back (*i);
                        }
                  }
            }

      } else {

            for (TrackViewList::reverse_iterator r = sorted.rbegin(); r != sorted.rend(); ++r) {
                              
                  if ((*r) == &view) {
                        passed_clicked = true;
                        continue;
                  }
                              
                  if (passed_clicked) {
                                    
                        if ((*r)->hidden()) {
                              continue;
                        }
                                    
                        if (selection->selected (*r)) {
                              break;
                        } else if (!(*r)->hidden()) {
                              to_be_added.push_back (*r);
                        }
                  }
            }
      }
                  
      if (!to_be_added.empty()) {
            selection->add (to_be_added);
            return true;
      }
      
      return false;
}

void
Editor::select_all_tracks ()
{
      selection->set (track_views);
}

bool
Editor::set_selected_track (TimeAxisView& view, Selection::Operation op, bool no_remove)
{
      bool commit = false;

      switch (op) {
      case Selection::Toggle:
            if (selection->selected (&view)) {
                  if (!no_remove) {
                        selection->remove (&view);
                        commit = true;
                  }
            } else {
                  selection->add (&view);
                  commit = false;
            }
            break;

      case Selection::Add:
            if (!selection->selected (&view)) {
                  selection->add (&view);
                  commit = true;
            }
            break;

      case Selection::Set:
            if (selection->selected (&view) && selection->tracks.size() == 1) {
                  /* no commit necessary */
            } else {
                  
                  /* reset track selection if there is only 1 other track
                     selected OR if no_remove is not set (its there to 
                     prevent deselecting a multi-track selection
                     when clicking on an already selected track
                     for some reason.
                  */

                  if (selection->tracks.empty()) {
                        selection->set (&view);
                        commit = true;
                  } else if (selection->tracks.size() == 1 || !no_remove) {
                        selection->set (&view);
                        commit = true;
                  }
            }
            break;
            
      case Selection::Extend:
            commit = extend_selection_to_track (view);
            break;
      }

      return commit;
}

bool
Editor::set_selected_track_from_click (bool press, Selection::Operation op, bool no_remove)
{
      if (!clicked_trackview) {
            return false;
      }
      
      if (!press) {
            return false;
      }

      return set_selected_track (*clicked_trackview, op, no_remove);
}

bool
Editor::set_selected_control_point_from_click (Selection::Operation op, bool no_remove)
{
      if (!clicked_control_point) {
            return false;
      }

      /* select this point and any others that it represents */

      double y1, y2;
      nframes_t x1, x2;

      x1 = pixel_to_frame (clicked_control_point->get_x() - 10);
      x2 = pixel_to_frame (clicked_control_point->get_x() + 10);
      y1 = clicked_control_point->get_x() - 10;
      y2 = clicked_control_point->get_y() + 10;

      return select_all_within (x1, x2, y1, y2, selection->tracks, op);
}

void
Editor::get_relevant_audio_tracks (set<AudioTimeAxisView*>& relevant_tracks)
{
      /* step one: get all selected tracks and all tracks in the relevant edit groups */

      for (TrackSelection::iterator ti = selection->tracks.begin(); ti != selection->tracks.end(); ++ti) {

            AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*>(*ti);

            if (!atv) {
                  continue;
            }

            RouteGroup* group = atv->route()->edit_group();

            if (group && group->is_active()) {
                  
                  /* active group for this track, loop over all tracks and get every member of the group */

                  for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
                        
                        AudioTimeAxisView* tatv;
                        
                        if ((tatv = dynamic_cast<AudioTimeAxisView*> (*i)) != 0) {
                              
                              if (tatv->route()->edit_group() == group) {
                                    relevant_tracks.insert (tatv);
                              }
                        }
                  }
            } else {
                  relevant_tracks.insert (atv);
            }
      }
}

void
Editor::mapover_audio_tracks (slot<void,AudioTimeAxisView&,uint32_t> sl)
{
      set<AudioTimeAxisView*> relevant_tracks;

      get_relevant_audio_tracks (relevant_tracks);

      uint32_t sz = relevant_tracks.size();

      for (set<AudioTimeAxisView*>::iterator ati = relevant_tracks.begin(); ati != relevant_tracks.end(); ++ati) {
            sl (**ati, sz);
      }
}

void
Editor::mapped_get_equivalent_regions (RouteTimeAxisView& tv, uint32_t ignored, RegionView* basis, vector<RegionView*>* all_equivs)
{
      boost::shared_ptr<Playlist> pl;
      vector<boost::shared_ptr<Region> > results;
      RegionView* marv;
      boost::shared_ptr<Diskstream> ds;

      if ((ds = tv.get_diskstream()) == 0) {
            /* bus */
            return;
      }

      if (&tv == &basis->get_time_axis_view()) {
            /* looking in same track as the original */
            return;
      }

      if ((pl = ds->playlist()) != 0) {
            pl->get_equivalent_regions (basis->region(), results);
      }

      for (vector<boost::shared_ptr<Region> >::iterator ir = results.begin(); ir != results.end(); ++ir) {
            if ((marv = tv.view()->find_view (*ir)) != 0) {
                  all_equivs->push_back (marv);
            }
      }
}

void
Editor::get_equivalent_regions (RegionView* basis, vector<RegionView*>& equivalent_regions)
{
      mapover_audio_tracks (bind (mem_fun (*this, &Editor::mapped_get_equivalent_regions), basis, &equivalent_regions));
      
      /* add clicked regionview since we skipped all other regions in the same track as the one it was in */
      
      equivalent_regions.push_back (basis);
}

bool
Editor::set_selected_regionview_from_click (bool press, Selection::Operation op, bool no_track_remove)
{
      vector<RegionView*> all_equivalent_regions;
      bool commit = false;

      if (!clicked_regionview || !clicked_audio_trackview) {
            return false;
      }

      if (press) {
            button_release_can_deselect = false;
      } 

      if (op == Selection::Toggle || op == Selection::Set) {


            switch (op) {
            case Selection::Toggle:
                  
                  if (clicked_regionview->get_selected()) {
                        if (press) {

                              /* whatever was clicked was selected already; do nothing here but allow
                                 the button release to deselect it
                              */

                              button_release_can_deselect = true;

                        } else {

                              if (button_release_can_deselect) {

                                    /* just remove this one region, but only on a permitted button release */

                                    selection->remove (clicked_regionview);
                                    commit = true;

                                    /* no more deselect action on button release till a new press
                                       finds an already selected object.
                                    */

                                    button_release_can_deselect = false;
                              }
                        } 

                  } else {

                        if (press) {

                              if (selection->selected (clicked_audio_trackview)) {
                                    get_equivalent_regions (clicked_regionview, all_equivalent_regions);
                              } else {
                                    all_equivalent_regions.push_back (clicked_regionview);
                              }

                              /* add all the equivalent regions, but only on button press */
                              


                              if (!all_equivalent_regions.empty()) {
                                    commit = true;
                              }

                              selection->add (all_equivalent_regions);
                        } 
                  }
                  break;
                  
            case Selection::Set:
                  if (!clicked_regionview->get_selected()) {

                        if (selection->selected (clicked_audio_trackview)) {
                              get_equivalent_regions (clicked_regionview, all_equivalent_regions);
                        } else {
                              all_equivalent_regions.push_back (clicked_regionview);
                        }

                        selection->set (all_equivalent_regions);
                        commit = true;
                  } else {
                        /* no commit necessary: clicked on an already selected region */
                        goto out;
                  }
                  break;

            default:
                  /* silly compiler */
                  break;
            }

      } else if (op == Selection::Extend) {

            list<Selectable*> results;
            nframes_t last_frame;
            nframes_t first_frame;

            /* 1. find the last selected regionview in the track that was clicked in */

            last_frame = 0;
            first_frame = max_frames;

            for (RegionSelection::iterator x = selection->regions.begin(); x != selection->regions.end(); ++x) {
                  if (&(*x)->get_time_axis_view() == &clicked_regionview->get_time_axis_view()) {

                        if ((*x)->region()->last_frame() > last_frame) {
                              last_frame = (*x)->region()->last_frame();
                        }

                        if ((*x)->region()->first_frame() < first_frame) {
                              first_frame = (*x)->region()->first_frame();
                        }
                  }
            }

            /* 2. figure out the boundaries for our search for new objects */

            switch (clicked_regionview->region()->coverage (first_frame, last_frame)) {
            case OverlapNone:
                  if (last_frame < clicked_regionview->region()->first_frame()) {
                        first_frame = last_frame;
                        last_frame = clicked_regionview->region()->last_frame();
                  } else {
                        last_frame = first_frame;
                        first_frame = clicked_regionview->region()->first_frame();
                  }
                  break;

            case OverlapExternal:
                  if (last_frame < clicked_regionview->region()->first_frame()) {
                        first_frame = last_frame;
                        last_frame = clicked_regionview->region()->last_frame();
                  } else {
                        last_frame = first_frame;
                        first_frame = clicked_regionview->region()->first_frame();
                  }
                  break;

            case OverlapInternal:
                  if (last_frame < clicked_regionview->region()->first_frame()) {
                        first_frame = last_frame;
                        last_frame = clicked_regionview->region()->last_frame();
                  } else {
                        last_frame = first_frame;
                        first_frame = clicked_regionview->region()->first_frame();
                  }
                  break;

            case OverlapStart:
            case OverlapEnd:
                  /* nothing to do except add clicked region to selection, since it
                     overlaps with the existing selection in this track.
                  */
                  break;
            }

            /* 2. find all selectable objects (regionviews in this case) between that one and the end of the
                  one that was clicked.
            */

            set<AudioTimeAxisView*> relevant_tracks;
            
            get_relevant_audio_tracks (relevant_tracks);

            for (set<AudioTimeAxisView*>::iterator t = relevant_tracks.begin(); t != relevant_tracks.end(); ++t) {
                  (*t)->get_selectables (first_frame, last_frame, -1.0, -1.0, results);
            }
            
            /* 3. convert to a vector of audio regions */

            vector<RegionView*> regions;
            
            for (list<Selectable*>::iterator x = results.begin(); x != results.end(); ++x) {
                  RegionView* arv;

                  if ((arv = dynamic_cast<RegionView*>(*x)) != 0) {
                        regions.push_back (arv);
                  }
            }

            if (!regions.empty()) {
                  selection->add (regions);
                  commit = true;
            }
      }

  out:
      return commit;
}

void
Editor::set_selected_regionview_from_region_list (boost::shared_ptr<Region> region, Selection::Operation op)
{
      vector<RegionView*> all_equivalent_regions;

      for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
            
            RouteTimeAxisView* tatv;
            
            if ((tatv = dynamic_cast<RouteTimeAxisView*> (*i)) != 0) {
                  
                  boost::shared_ptr<Playlist> pl;
                  vector<boost::shared_ptr<Region> > results;
                  RegionView* marv;
                  boost::shared_ptr<Diskstream> ds;
                  
                  if ((ds = tatv->get_diskstream()) == 0) {
                        /* bus */
                        continue;
                  }
                  
                  if ((pl = (ds->playlist())) != 0) {
                        pl->get_region_list_equivalent_regions (region, results);
                  }
                  
                  for (vector<boost::shared_ptr<Region> >::iterator ir = results.begin(); ir != results.end(); ++ir) {
                        if ((marv = tatv->view()->find_view (*ir)) != 0) {
                              all_equivalent_regions.push_back (marv);
                        }
                  }
                  
            }
      }
      
      begin_reversible_command (_("set selected regions"));
      
      switch (op) {
      case Selection::Toggle:
            /* XXX this is not correct */
            selection->toggle (all_equivalent_regions);
            break;
      case Selection::Set:
            selection->set (all_equivalent_regions);
            break;
      case Selection::Extend:
            selection->add (all_equivalent_regions);
            break;
      case Selection::Add:
            selection->add (all_equivalent_regions);
            break;
      }

      commit_reversible_command () ;
}

bool
Editor::set_selected_regionview_from_map_event (GdkEventAny* ev, StreamView* sv, boost::weak_ptr<Region> weak_r)
{
      RegionView* rv;
      boost::shared_ptr<Region> r (weak_r.lock());

      if (!r) {
            return true;
      }

      boost::shared_ptr<AudioRegion> ar;

      if ((ar = boost::dynamic_pointer_cast<AudioRegion> (r)) == 0) {
            return true;
      }

      if ((rv = sv->find_view (ar)) == 0) {
            return true;
      }

      /* don't reset the selection if its something other than 
         a single other region.
      */

      if (selection->regions.size() > 1) {
            return true;
      }
      
      begin_reversible_command (_("set selected regions"));
      
      selection->set (rv);

      commit_reversible_command () ;

      return true;
}

void
Editor::track_selection_changed ()
{
      switch (selection->tracks.size()){
      case 0:
            break;
      default:
            set_selected_mixer_strip (*(selection->tracks.front()));
            break;
      }

      for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
            (*i)->set_selected (false);
            if (mouse_mode == MouseRange) {
                  (*i)->hide_selection ();
            }
      }

      for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
            (*i)->set_selected (true);
            if (mouse_mode == MouseRange) {
                  (*i)->show_selection (selection->time);
            }
      }
}

void
Editor::time_selection_changed ()
{
      for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
            (*i)->hide_selection ();
      }

      if (selection->tracks.empty()) {
            for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
                  (*i)->show_selection (selection->time);
            }
      } else {
            for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
                  (*i)->show_selection (selection->time);
            }
      }

      if (selection->time.empty()) {
            ActionManager::set_sensitive (ActionManager::time_selection_sensitive_actions, false);
      } else {
            ActionManager::set_sensitive (ActionManager::time_selection_sensitive_actions, true);
      }
}

void
Editor::region_selection_changed ()
{
      for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
            (*i)->set_selected_regionviews (selection->regions);
      }
}

void
Editor::point_selection_changed ()
{
      for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
            (*i)->set_selected_points (selection->points);
      }
}

void
Editor::select_all_in_track (Selection::Operation op)
{
      list<Selectable *> touched;

      if (!clicked_trackview) {
            return;
      }
      
      clicked_trackview->get_selectables (0, max_frames, 0, DBL_MAX, touched);

      switch (op) {
      case Selection::Toggle:
            selection->add (touched);
            break;
      case Selection::Set:
            selection->set (touched);
            break;
      case Selection::Extend:
            /* meaningless, because we're selecting everything */
            break;
      case Selection::Add:
            selection->add (touched);
            break;
      }
}

void
Editor::select_all (Selection::Operation op)
{
      list<Selectable *> touched;
      
      for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
            if ((*iter)->hidden()) {
                  continue;
            }
            (*iter)->get_selectables (0, max_frames, 0, DBL_MAX, touched);
      }
      begin_reversible_command (_("select all"));
      switch (op) {
      case Selection::Add:
            selection->add (touched);
            break;
      case Selection::Toggle:
            selection->add (touched);
            break;
      case Selection::Set:
            selection->set (touched);
            break;
      case Selection::Extend:
            /* meaningless, because we're selecting everything */
            break;
      }
      commit_reversible_command ();
}

void
Editor::invert_selection_in_track ()
{
      list<Selectable *> touched;

      if (!clicked_trackview) {
            return;
      }
      
      clicked_trackview->get_inverted_selectables (*selection, touched);
      selection->set (touched);
}

void
Editor::invert_selection ()
{
      list<Selectable *> touched;
      
      for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
            if ((*iter)->hidden()) {
                  continue;
            }
            (*iter)->get_inverted_selectables (*selection, touched);
      }

      selection->set (touched);
}

bool
Editor::select_all_within (nframes_t start, nframes_t end, double top, double bot, const TrackViewList& tracklist, Selection::Operation op)
{
      list<Selectable*> touched;
      list<Selectable*>::size_type n = 0;
      TrackViewList touched_tracks;

      for (TrackViewList::const_iterator iter = tracklist.begin(); iter != tracklist.end(); ++iter) {
            if ((*iter)->hidden()) {
                  continue;
            }

            n = touched.size();

            (*iter)->get_selectables (start, end, top, bot, touched);
            
            if (n != touched.size()) {
                  touched_tracks.push_back (*iter);
            }
      }

      if (touched.empty()) {
            return false;
      }

      if (!touched_tracks.empty()) {

            switch (op) {
            case Selection::Add:
                  selection->add (touched_tracks);
                  break;
            case Selection::Toggle:
                  selection->toggle (touched_tracks);
                  break;
            case Selection::Set:
                  selection->set (touched_tracks);
                  break;
            case Selection::Extend:
                  /* not defined yet */
                  break;
            }
      }

      begin_reversible_command (_("select all within"));
      switch (op) {
      case Selection::Add:
            selection->add (touched);
            break;
      case Selection::Toggle:
            selection->toggle (touched);
            break;
      case Selection::Set:
            selection->set (touched);
            break;
      case Selection::Extend:
            /* not defined yet */
            break;
      }
      
      commit_reversible_command ();

      return !touched.empty();
}

void
Editor::set_selection_from_audio_region ()
{
      if (selection->regions.empty()) {
            return;
      }

      RegionView* rv = *(selection->regions.begin());
      boost::shared_ptr<Region> region = rv->region();
      
      begin_reversible_command (_("set selection from region"));
      selection->set (0, region->position(), region->last_frame());
      commit_reversible_command ();

      set_mouse_mode (Editing::MouseRange, false);
}

void
Editor::set_selection_from_punch()
{
      Location* location;

      if ((location = session->locations()->auto_punch_location()) == 0)  {
            return;
      }

      set_selection_from_range (*location);
}

void
Editor::set_selection_from_loop()
{
      Location* location;

      if ((location = session->locations()->auto_loop_location()) == 0)  {
            return;
      }
      set_selection_from_range (*location);
}

void
Editor::set_selection_from_range (Location& loc)
{
      begin_reversible_command (_("set selection from range"));
      selection->set (0, loc.start(), loc.end());
      commit_reversible_command ();

      set_mouse_mode (Editing::MouseRange, false);
}

void
Editor::select_all_selectables_using_time_selection ()
{
      list<Selectable *> touched;

      if (selection->time.empty()) {
            return;
      }

      nframes_t start = selection->time[clicked_selection].start;
      nframes_t end = selection->time[clicked_selection].end;

      if (end - start < 1)  {
            return;
      }

      for (TrackViewList::iterator iter = selection->tracks.begin(); iter != selection->tracks.end(); ++iter) {
            if ((*iter)->hidden()) {
                  continue;
            }
            (*iter)->get_selectables (start, end - 1, 0, DBL_MAX, touched);
      }

      begin_reversible_command (_("select all from range"));
      selection->set (touched);
      commit_reversible_command ();
}


void
Editor::select_all_selectables_using_punch()
{
      Location* location = session->locations()->auto_punch_location();
      list<Selectable *> touched;

      if (location == 0 || (location->end() - location->start() <= 1))  {
            return;
      }

      for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
            if ((*iter)->hidden()) {
                  continue;
            }
            (*iter)->get_selectables (location->start(), location->end() - 1, 0, DBL_MAX, touched);
      }
      begin_reversible_command (_("select all from punch"));
      selection->set (touched);
      commit_reversible_command ();

}

void
Editor::select_all_selectables_using_loop()
{
      Location* location = session->locations()->auto_loop_location();
      list<Selectable *> touched;

      if (location == 0 || (location->end() - location->start() <= 1))  {
            return;
      }

      for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
            if ((*iter)->hidden()) {
                  continue;
            }
            (*iter)->get_selectables (location->start(), location->end() - 1, 0, DBL_MAX, touched);
      }
      begin_reversible_command (_("select all from loop"));
      selection->set (touched);
      commit_reversible_command ();

}

void
Editor::select_all_selectables_using_cursor (Cursor *cursor, bool after)
{
        nframes_t start;
      nframes_t end;
      list<Selectable *> touched;

      if (after) {
            begin_reversible_command (_("select all after cursor"));
            start = cursor->current_frame ;
            end = session->current_end_frame();
      } else {
            if (cursor->current_frame > 0) {
                  begin_reversible_command (_("select all before cursor"));
                  start = 0;
                  end = cursor->current_frame - 1;
            } else {
                  return;
            }
      }

      for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
            if ((*iter)->hidden()) {
                  continue;
            }
            (*iter)->get_selectables (start, end, 0, DBL_MAX, touched);
      }
      selection->set (touched);
      commit_reversible_command ();
}

void
Editor::select_all_selectables_between_cursors (Cursor *cursor, Cursor *other_cursor)
{
        nframes_t start;
      nframes_t end;
      list<Selectable *> touched;
      bool  other_cursor_is_first = cursor->current_frame > other_cursor->current_frame;

      if (cursor->current_frame == other_cursor->current_frame) {
            return;
      }

      begin_reversible_command (_("select all between cursors"));
      if (other_cursor_is_first) {
            start = other_cursor->current_frame;
            end = cursor->current_frame - 1;
            
      } else {
            start = cursor->current_frame;
            end = other_cursor->current_frame - 1;
      }
      
      for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
            if ((*iter)->hidden()) {
                  continue;
            }
            (*iter)->get_selectables (start, end, 0, DBL_MAX, touched);
      }
      selection->set (touched);
      commit_reversible_command ();
}


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