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editor_markers.cc

/*
    Copyright (C) 2000 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 <sigc++/retype.h>
#include <cstdlib>
#include <cmath>

#include <libgnomecanvas/libgnomecanvas.h>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/window_title.h>

#include <ardour/location.h>
#include <ardour/profile.h>
#include <pbd/memento_command.h>

#include "editor.h"
#include "marker.h"
#include "selection.h"
#include "editing.h"
#include "gui_thread.h"
#include "simplerect.h"
#include "actions.h"
#include "prompter.h"

#include "i18n.h"

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

void
Editor::clear_marker_display ()
{
      for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
            delete i->second;
      }

      location_markers.clear ();
}

void
Editor::add_new_location (Location *location)
{
      ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::add_new_location), location));

      LocationMarkers *lam = new LocationMarkers;
      uint32_t color;

      if (location->is_cd_marker()) {
            color = location_cd_marker_color;
      } else if (location->is_mark()) {
            color = location_marker_color;
      } else if (location->is_auto_loop()) {
            color = location_loop_color;
      } else if (location->is_auto_punch()) {
            color = location_punch_color;
      } else {
            color = location_range_color;
      }

      if (location->is_mark()) {

            if (location->is_cd_marker() && ruler_cd_marker_action->get_active()) {
                  lam->start = new Marker (*this, *cd_marker_group, color, location->name(), Marker::Mark, location->start());
            }
            else {
                  lam->start = new Marker (*this, *marker_group, color, location->name(), Marker::Mark, location->start());
            }
            lam->end   = 0;
                  
      } else if (location->is_auto_loop()) {
            // transport marker
            lam->start = new Marker (*this, *transport_marker_group, color, 
                               location->name(), Marker::LoopStart, location->start());
            lam->end   = new Marker (*this, *transport_marker_group, color, 
                               location->name(), Marker::LoopEnd, location->end());
            
      } else if (location->is_auto_punch()) {
            // transport marker
            lam->start = new Marker (*this, *transport_marker_group, color, 
                               location->name(), Marker::PunchIn, location->start());
            lam->end   = new Marker (*this, *transport_marker_group, color, 
                               location->name(), Marker::PunchOut, location->end());
            
      } else {
            // range marker
            if (location->is_cd_marker() && ruler_cd_marker_action->get_active()) {
                  lam->start = new Marker (*this, *cd_marker_group, color, 
                                     location->name(), Marker::Start, location->start());
                  lam->end   = new Marker (*this, *cd_marker_group, color, 
                                     location->name(), Marker::End, location->end());
            }
            else {
                  
                  lam->start = new Marker (*this, *range_marker_group, color, 
                                     location->name(), Marker::Start, location->start());
                  lam->end   = new Marker (*this, *range_marker_group, color, 
                                     location->name(), Marker::End, location->end());
            }
      }

      if (location->is_hidden ()) {
            lam->hide();
      } else {
            lam->show ();
      }

      location->start_changed.connect (mem_fun(*this, &Editor::location_changed));
      location->end_changed.connect (mem_fun(*this, &Editor::location_changed));
      location->changed.connect (mem_fun(*this, &Editor::location_changed));
      location->name_changed.connect (mem_fun(*this, &Editor::location_changed));
      location->FlagsChanged.connect (mem_fun(*this, &Editor::location_flags_changed));

      pair<Location*,LocationMarkers*> newpair;

      newpair.first = location;
      newpair.second = lam;

      location_markers.insert (newpair);

      if (select_new_marker && location->is_mark()) {
            selection->set (lam->start);
            select_new_marker = false;
      }
}

void
Editor::location_changed (Location *location)
{
      ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::location_changed), location));

      LocationMarkers *lam = find_location_markers (location);

      if (lam == 0) {
            /* a location that isn't "marked" with markers */
            return;
      }
      
      lam->set_name (location->name());
      lam->set_position (location->start(), location->end());

      if (location->is_auto_loop()) {
            update_loop_range_view ();
      } else if (location->is_auto_punch()) {
            update_punch_range_view ();
      }
}

void
Editor::location_flags_changed (Location *location, void *src)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::location_flags_changed), location, src));
      
      LocationMarkers *lam = find_location_markers (location);
      
      if (lam == 0) {
            /* a location that isn't "marked" with markers */
            return;
      }

      // move cd markers to/from cd marker bar as appropriate
      ensure_cd_marker_updated (lam, location);

      if (location->is_cd_marker()) {
            lam->set_color_rgba (location_cd_marker_color);
      } else if (location->is_mark()) {
            lam->set_color_rgba (location_marker_color);
      } else if (location->is_auto_punch()) {
            lam->set_color_rgba (location_punch_color);
      } else if (location->is_auto_loop()) {
            lam->set_color_rgba (location_loop_color);
      } else {
            lam->set_color_rgba (location_range_color);
      }
      
      if (location->is_hidden()) {
            lam->hide();
      } else {
            lam->show ();
      }
}

void Editor::update_cd_marker_display ()
{
      for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
            LocationMarkers * lam = i->second;
            Location * location = i->first;

            ensure_cd_marker_updated (lam, location);
      }
}

void Editor::ensure_cd_marker_updated (LocationMarkers * lam, Location * location)
{
      if (location->is_cd_marker()
          && (ruler_cd_marker_action->get_active() &&  lam->start->get_parent() != cd_marker_group))
      {
            //cerr << "reparenting non-cd marker so it can be relocated: " << location->name() << endl;
            if (lam->start) {
                  lam->start->reparent (*cd_marker_group);
            }
            if (lam->end) {
                  lam->end->reparent (*cd_marker_group);
            }
      }
      else if ( (!location->is_cd_marker() || !ruler_cd_marker_action->get_active()) 
              && (lam->start->get_parent() == cd_marker_group))  
      {
            //cerr << "reparenting non-cd marker so it can be relocated: " << location->name() << endl;
            if (location->is_mark()) {
                  if (lam->start) {
                        lam->start->reparent (*marker_group);
                  }
                  if (lam->end) {
                        lam->end->reparent (*marker_group);
                  }
            }
            else {
                  if (lam->start) {
                        lam->start->reparent (*range_marker_group);
                  }
                  if (lam->end) {
                        lam->end->reparent (*range_marker_group);
                  }
            }
      }
}

Editor::LocationMarkers::~LocationMarkers ()
{
      if (start) {
            delete start;
      }

      if (end) {
            delete end;
      }
}

Editor::LocationMarkers *
Editor::find_location_markers (Location *location) const
{
      LocationMarkerMap::const_iterator i;

      for (i = location_markers.begin(); i != location_markers.end(); ++i) {
            if ((*i).first == location) {
                  return (*i).second;
            }
      }

      return 0;
}

Location *
Editor::find_location_from_marker (Marker *marker, bool& is_start) const
{
      LocationMarkerMap::const_iterator i;

      for (i = location_markers.begin(); i != location_markers.end(); ++i) {
            LocationMarkers *lm = (*i).second;
            if (lm->start == marker) {
                  is_start = true;
                  return (*i).first;
            } else if (lm->end == marker) {
                  is_start = false;
                  return (*i).first;
            }
      }

      return 0;
}

void
Editor::refresh_location_display_internal (Locations::LocationList& locations)
{
      /* invalidate all */

      for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
            i->second->valid = false;
      }
      
      /* add new ones */

      for (Locations::LocationList::iterator i = locations.begin(); i != locations.end(); ++i) {

            LocationMarkerMap::iterator x;

            if ((x = location_markers.find (*i)) != location_markers.end()) {
                  x->second->valid = true;
                  continue;
            }

            add_new_location (*i);
      }

      /* remove dead ones */

      for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ) {

            LocationMarkerMap::iterator tmp;

            tmp = i;
            ++tmp;

            if (!i->second->valid) {
                  delete i->second;
                  location_markers.erase (i);
            } 

            i = tmp;
      }

      update_punch_range_view (false);
      update_loop_range_view (false);
}

void
Editor::refresh_location_display ()
{
      ENSURE_GUI_THREAD(mem_fun(*this, &Editor::refresh_location_display));
      
      if (session) {
            session->locations()->apply (*this, &Editor::refresh_location_display_internal);
      }
}

void
Editor::refresh_location_display_s (Change ignored)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::refresh_location_display_s), ignored));

      if (session) {
            session->locations()->apply (*this, &Editor::refresh_location_display_internal);
      }
}

void
Editor::LocationMarkers::hide() 
{
      start->hide ();
      if (end) { end->hide(); }
}

void
Editor::LocationMarkers::show() 
{
      start->show ();
      if (end) { end->show(); }
}

void
Editor::LocationMarkers::set_name (const string& str) 
{
      start->set_name (str);
      if (end) { end->set_name (str); }
}

void
Editor::LocationMarkers::set_position (nframes64_t startf, 
                               nframes64_t endf) 
{
      start->set_position (startf);
      if (end) { end->set_position (endf); }
}

void
Editor::LocationMarkers::set_color_rgba (uint32_t rgba) 
{
      start->set_color_rgba (rgba);
      if (end) { end->set_color_rgba (rgba); }
}

void
Editor::mouse_add_new_marker (nframes64_t where, bool is_cd, bool is_xrun)
{
      string markername, markerprefix;
      int flags = (is_cd ? Location::IsCDMarker|Location::IsMark : Location::IsMark);

      if (is_xrun) {
            markerprefix = "xrun";
            flags = Location::IsMark;
      } else {
            markerprefix = "mark";
      }

      if (session) {
            session->locations()->next_available_name(markername, markerprefix);
            if (!is_xrun && !choose_new_marker_name(markername)) {
                  return;
            }           
            Location *location = new Location (where, where, markername, (Location::Flags) flags);
            session->begin_reversible_command (_("add marker"));
                XMLNode &before = session->locations()->get_state();
            session->locations()->add (location, true);
                XMLNode &after = session->locations()->get_state();
            session->add_command (new MementoCommand<Locations>(*(session->locations()), &before, &after));
            session->commit_reversible_command ();

            /* find the marker we just added */

            LocationMarkers *lam = find_location_markers (location);
            if (lam) {
                  /* make it the selected marker */
                  selection->set (lam->start);
            }
      }
}

void
Editor::remove_marker (ArdourCanvas::Item& item, GdkEvent* event)
{
      Marker* marker;
      bool is_start;

      if ((marker = static_cast<Marker*> (item.get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      if (entered_marker == marker) {
            entered_marker = NULL;
      }

      Location* loc = find_location_from_marker (marker, is_start);

      if (session && loc) {
            Glib::signal_idle().connect (bind (mem_fun(*this, &Editor::really_remove_marker), loc));
      }
}

gint
Editor::really_remove_marker (Location* loc)
{
      session->begin_reversible_command (_("remove marker"));
      XMLNode &before = session->locations()->get_state();
      session->locations()->remove (loc);
      XMLNode &after = session->locations()->get_state();
      session->add_command (new MementoCommand<Locations>(*(session->locations()), &before, &after));
      session->commit_reversible_command ();
      return FALSE;
}

void
Editor::location_gone (Location *location)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::location_gone), location));
      
      LocationMarkerMap::iterator i;

      if (location == transport_loop_location()) {
            update_loop_range_view (true);
      }

      if (location == transport_punch_location()) {
            update_punch_range_view (true);
      }
      
      for (i = location_markers.begin(); i != location_markers.end(); ++i) {
            if ((*i).first == location) {
                  delete (*i).second;
                  location_markers.erase (i);
                  break;
            }
      }
}

void
Editor::tm_marker_context_menu (GdkEventButton* ev, ArdourCanvas::Item* item)
{
      if (tm_marker_menu == 0) {
            build_tm_marker_menu ();
      }

      marker_menu_item = item;
      tm_marker_menu->popup (1, ev->time);

}

void
Editor::marker_context_menu (GdkEventButton* ev, ArdourCanvas::Item* item)
{
      Marker * marker;
      if ((marker = reinterpret_cast<Marker *> (item->get_data("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }
      
      bool is_start;
      Location * loc = find_location_from_marker (marker, is_start);
      if (loc == transport_loop_location() || loc == transport_punch_location()) {
            if (transport_marker_menu == 0) {
                  build_range_marker_menu (true);
            }
            marker_menu_item = item;
            transport_marker_menu->popup (1, ev->time);
      } else {

            if (loc->is_mark()) {
                  bool start_or_end = loc->is_start() || loc->is_end();
                  Menu *markerMenu;
                  if (start_or_end) {
                        if (start_end_marker_menu == 0)
                              build_marker_menu (true);
                        markerMenu = start_end_marker_menu;
                  } else {
                        if (marker_menu == 0)
                              build_marker_menu (false);
                        markerMenu = marker_menu;
                  }


            // GTK2FIX use action group sensitivity
#ifdef GTK2FIX
            if (children.size() >= 3) {
                  MenuItem * loopitem = &children[2];
                  if (loopitem) {
                        if (loc->is_mark()) {
                              loopitem->set_sensitive(false);
                        }
                        else {
                              loopitem->set_sensitive(true);
                        }
                  }
            }
#endif            
            marker_menu_item = item;
            markerMenu->popup (1, ev->time);
            }

              if (loc->is_range_marker()) {
                   if (range_marker_menu == 0){
                        build_range_marker_menu (false);
                   }
                   marker_menu_item = item;
                   range_marker_menu->popup (1, ev->time);
              }
      }
}

void
Editor::new_transport_marker_context_menu (GdkEventButton* ev, ArdourCanvas::Item* item)
{
      if (new_transport_marker_menu == 0) {
            build_new_transport_marker_menu ();
      }

      new_transport_marker_menu->popup (1, ev->time);

}

void
Editor::transport_marker_context_menu (GdkEventButton* ev, ArdourCanvas::Item* item)
{
      if (transport_marker_menu == 0) {
            build_range_marker_menu (true);
      }

      transport_marker_menu->popup (1, ev->time);
}

void
Editor::build_marker_menu (bool start_or_end)
{
      using namespace Menu_Helpers;

      Menu *markerMenu = new Menu;
      if (start_or_end) {
            start_end_marker_menu = markerMenu;
      } else {
            marker_menu = markerMenu;
      }
      MenuList& items = markerMenu->items();
      markerMenu->set_name ("ArdourContextMenu");

      items.push_back (MenuElem (_("Locate to here"), mem_fun(*this, &Editor::marker_menu_set_playhead)));
      items.push_back (MenuElem (_("Play from here"), mem_fun(*this, &Editor::marker_menu_play_from)));
      items.push_back (MenuElem (_("Move Mark to Playhead"), mem_fun(*this, &Editor::marker_menu_set_from_playhead)));

      items.push_back (SeparatorElem());

      items.push_back (MenuElem (_("Create range to next marker"), mem_fun(*this, &Editor::marker_menu_range_to_next)));

      items.push_back (MenuElem (_("Hide"), mem_fun(*this, &Editor::marker_menu_hide)));
      if (start_or_end) return;
      items.push_back (MenuElem (_("Rename"), mem_fun(*this, &Editor::marker_menu_rename)));
      items.push_back (MenuElem (_("Lock"), bind (mem_fun(*this, &Editor::marker_menu_lock), true)));
      items.push_back (MenuElem (_("Unlock"), bind (mem_fun(*this, &Editor::marker_menu_lock), false)));

      items.push_back (SeparatorElem());

      items.push_back (MenuElem (_("Remove"), mem_fun(*this, &Editor::marker_menu_remove)));
}

void
Editor::build_range_marker_menu (bool loop_or_punch)
{
      using namespace Menu_Helpers;

      Menu *markerMenu = new Menu;
      if (loop_or_punch) {
            transport_marker_menu = markerMenu;
      } else {
            range_marker_menu = markerMenu;
      }

      MenuList& items = markerMenu->items();
      markerMenu->set_name ("ArdourContextMenu");

      items.push_back (MenuElem (_("Play Range"), mem_fun(*this, &Editor::marker_menu_play_range)));
      items.push_back (MenuElem (_("Locate to Range Mark"), mem_fun(*this, &Editor::marker_menu_set_playhead)));
      items.push_back (MenuElem (_("Play from Range Mark"), mem_fun(*this, &Editor::marker_menu_play_from)));
      if (!loop_or_punch) {
            items.push_back (MenuElem (_("Loop Range"), mem_fun(*this, &Editor::marker_menu_loop_range)));
      }
      items.push_back (MenuElem (_("Set Range Mark from Playhead"), mem_fun(*this, &Editor::marker_menu_set_from_playhead)));
      if (!Profile->get_sae()) {
            items.push_back (MenuElem (_("Set Range from Range Selection"), mem_fun(*this, &Editor::marker_menu_set_from_selection)));
      }

      items.push_back (SeparatorElem());

      items.push_back (MenuElem (_("Export Range"), mem_fun(*this, &Editor::marker_menu_export_range)));

      items.push_back (SeparatorElem());

      if (!loop_or_punch) {
            items.push_back (MenuElem (_("Hide Range"), mem_fun(*this, &Editor::marker_menu_hide)));
            items.push_back (MenuElem (_("Rename Range"), mem_fun(*this, &Editor::marker_menu_rename)));
            items.push_back (MenuElem (_("Remove Range"), mem_fun(*this, &Editor::marker_menu_remove)));
      }

      items.push_back (SeparatorElem());

      items.push_back (MenuElem (_("Separate Regions in Range"), mem_fun(*this, &Editor::marker_menu_separate_regions_using_location)));
      items.push_back (MenuElem (_("Select All in Range"), mem_fun(*this, &Editor::marker_menu_select_all_selectables_using_range)));
      if (!Profile->get_sae()) {
            items.push_back (MenuElem (_("Select Range"), mem_fun(*this, &Editor::marker_menu_select_using_range)));
      }
}

void
Editor::build_tm_marker_menu ()
{
      using namespace Menu_Helpers;

      tm_marker_menu = new Menu;
      MenuList& items = tm_marker_menu->items();
      tm_marker_menu->set_name ("ArdourContextMenu");

      items.push_back (MenuElem (_("Edit"), mem_fun(*this, &Editor::marker_menu_edit)));
      items.push_back (MenuElem (_("Remove"), mem_fun(*this, &Editor::marker_menu_remove)));
}

void
Editor::build_new_transport_marker_menu ()
{
      using namespace Menu_Helpers;

      new_transport_marker_menu = new Menu;
      MenuList& items = new_transport_marker_menu->items();
      new_transport_marker_menu->set_name ("ArdourContextMenu");

      items.push_back (MenuElem (_("Set Loop Range"), mem_fun(*this, &Editor::new_transport_marker_menu_set_loop)));
      items.push_back (MenuElem (_("Set Punch Range"), mem_fun(*this, &Editor::new_transport_marker_menu_set_punch)));

      new_transport_marker_menu->signal_unmap().connect ( mem_fun(*this, &Editor::new_transport_marker_menu_popdown)); 
}

void
Editor::marker_menu_hide ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;
      
      if ((l = find_location_from_marker (marker, is_start)) != 0) {
            l->set_hidden (true, this);
      }
}

void
Editor::marker_menu_select_using_range ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;

      if (((l = find_location_from_marker (marker, is_start)) != 0) && (l->end() > l->start())) {
              set_selection_from_range (*l);
      }
}

void
Editor::marker_menu_select_all_selectables_using_range ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;

      if (((l = find_location_from_marker (marker, is_start)) != 0) && (l->end() > l->start())) {
              select_all_within (l->start(), l->end() - 1, 0,  DBL_MAX, track_views, Selection::Set);
      }
        
}

void
Editor::marker_menu_separate_regions_using_location ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;

      if (((l = find_location_from_marker (marker, is_start)) != 0) && (l->end() > l->start())) {
              separate_regions_using_location (*l);
      }
        
}

void
Editor::marker_menu_play_from ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;
      
      if ((l = find_location_from_marker (marker, is_start)) != 0) {

            if (l->is_mark()) {
                  session->request_locate (l->start(), true);
            }
            else {
                  //session->request_bounded_roll (l->start(), l->end());
                  
                  if (is_start) {
                        session->request_locate (l->start(), true);
                  } else {
                        session->request_locate (l->end(), true);
                  }
            }
      }
}

void
Editor::marker_menu_set_playhead ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;
      
      if ((l = find_location_from_marker (marker, is_start)) != 0) {

            if (l->is_mark()) {
                  session->request_locate (l->start(), false);
            }
            else {
                  if (is_start) {
                        session->request_locate (l->start(), false);
                  } else {
                        session->request_locate (l->end(), false);
                  }
            }
      }
}

void
Editor::marker_menu_export_range ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;

      if ((l = find_location_from_marker (marker, is_start)) != 0) {
            if (l->is_range_marker()) {
                  export_range (l->start(), l->end());
            }
      }
}

void
Editor::marker_menu_range_to_next ()
{
      Marker* marker;
      if (!session) {
            return;
      }

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;

      if ((l = find_location_from_marker (marker, is_start)) == 0) {
            return;
      }
            
      nframes_t end = session->locations()->first_mark_after (marker->position());

      if (end != max_frames) {
            string range_name = l->name();
            range_name += "-range";

            Location* newrange = new Location (marker->position(), end, range_name, Location::IsRangeMarker);
            session->locations()->add (newrange);
      }
}

void
Editor::marker_menu_set_from_playhead ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;
      
      if ((l = find_location_from_marker (marker, is_start)) != 0) {

            if (l->is_mark()) {
                  l->set_start (session->audible_frame ());
            }
            else {
                  if (is_start) {
                        l->set_start (session->audible_frame ());
                  } else {
                        l->set_end (session->audible_frame ());
                  }
            }
      }
}

void
Editor::marker_menu_set_from_selection ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;
      
      if ((l = find_location_from_marker (marker, is_start)) != 0) {

            if (l->is_mark()) {
                  // nothing for now
            } else {

                  /* if range selection use first to last */

                  if (mouse_mode == Editing::MouseRange) {
                        if (!selection->time.empty()) {
                              l->set_start (selection->time.start());
                              l->set_end (selection->time.end_frame());
                        }
                  }
                  else {
                        if (!selection->regions.empty()) {
                              l->set_start (selection->regions.start());
                              l->set_end (selection->regions.end_frame());
                        }
                  }
            }
      }
}


void
Editor::marker_menu_play_range ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;
      
      if ((l = find_location_from_marker (marker, is_start)) != 0) {

            if (l->is_mark()) {
                  session->request_locate (l->start(), true);
            }
            else {
                  session->request_bounded_roll (l->start(), l->end());
                  
            }
      }
}

void
Editor::marker_menu_loop_range ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* l;
      bool is_start;
      
      if ((l = find_location_from_marker (marker, is_start)) != 0) {
            Location* l2;
            if ((l2 = transport_loop_location()) != 0) {
                  l2->set (l->start(), l->end());
                  
                  // enable looping, reposition and start rolling
                  session->request_play_loop(true);
                  session->request_locate (l2->start(), true);
            }
      }
}

void
Editor::marker_menu_edit ()
{
      MeterMarker* mm;
      TempoMarker* tm;
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      if ((mm = dynamic_cast<MeterMarker*> (marker)) != 0) {
            edit_meter_section (&mm->meter());
      } else if ((tm = dynamic_cast<TempoMarker*> (marker)) != 0) {
            edit_tempo_section (&tm->tempo());
      } else {
            fatal << X_("programming erorr: unhandled marker type in Editor::marker_menu_edit")
                  << endmsg;
            /*NOTREACHED*/
      }
}

void
Editor::marker_menu_remove ()
{
      MeterMarker* mm;
      TempoMarker* tm;
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      if ((mm = dynamic_cast<MeterMarker*> (marker)) != 0) {
            remove_meter_marker (marker_menu_item);
      } else if ((tm = dynamic_cast<TempoMarker*> (marker)) != 0) {
            remove_tempo_marker (marker_menu_item);
      } else {
            remove_marker (*marker_menu_item, (GdkEvent*) 0);
      }
}

void
Editor::marker_menu_lock (bool yn)
{

      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* loc;
      bool ignored;

      loc = find_location_from_marker (marker, ignored);

      if (!loc) return;

      if (yn) {
            loc->lock();
      } else {
            loc->unlock ();
      }
}

void
Editor::marker_menu_rename ()
{
      Marker* marker;

      if ((marker = reinterpret_cast<Marker *> (marker_menu_item->get_data ("marker"))) == 0) {
            fatal << _("programming error: marker canvas item has no marker object pointer!") << endmsg;
            /*NOTREACHED*/
      }

      Location* loc;
      bool is_start;

      loc = find_location_from_marker (marker, is_start);

      if (!loc) return;
      
      ArdourPrompter dialog (true);
      string txt;

      dialog.set_prompt (_("New Name:"));

      WindowTitle title(Glib::get_application_name());
      if (loc->is_mark()) {
            title += _("Rename Mark");
      } else {
            title += _("Rename Range");
      }

      dialog.set_title(title.get_string());

      dialog.set_name ("MarkRenameWindow");
      dialog.set_size_request (250, -1);
      dialog.set_position (Gtk::WIN_POS_MOUSE);

      dialog.add_button (_("Rename"), RESPONSE_ACCEPT);
      dialog.set_response_sensitive (Gtk::RESPONSE_ACCEPT, false);
      dialog.set_initial_text (loc->name());

      dialog.show ();

      switch (dialog.run ()) {
      case RESPONSE_ACCEPT:
            break;
      default:
            return;
      }

      begin_reversible_command ( _("rename marker") );
        XMLNode &before = session->locations()->get_state();

      dialog.get_result(txt);
      loc->set_name (txt);
      
        XMLNode &after = session->locations()->get_state();
      session->add_command (new MementoCommand<Locations>(*(session->locations()), &before, &after));
      commit_reversible_command ();
}

void
Editor::new_transport_marker_menu_popdown ()
{
      // hide rects
      transport_bar_drag_rect->hide();
      range_marker_drag_rect->hide();
}

void
Editor::new_transport_marker_menu_set_loop ()
{
      set_loop_range (temp_location->start(), temp_location->end(), _("set loop range"));
}

void
Editor::new_transport_marker_menu_set_punch ()
{
      set_punch_range (temp_location->start(), temp_location->end(), _("set punch range"));
}

void
Editor::update_loop_range_view (bool visibility)
{
      if (session == 0) {
            return;
      }

      Location* tll;

      if (session->get_play_loop() && ((tll = transport_loop_location()) != 0)) {

            double x1 = frame_to_pixel (tll->start());
            double x2 = frame_to_pixel (tll->end());
            
            transport_loop_range_rect->property_x1() = x1;
            transport_loop_range_rect->property_x2() = x2;
            
            if (visibility) {
                  transport_loop_range_rect->show();
            }

      } else if (visibility) {
            transport_loop_range_rect->hide();
      }
}

void
Editor::update_punch_range_view (bool visibility)
{
      if (session == 0) {
            return;
      }

      Location* tpl;

      if ((Config->get_punch_in() || Config->get_punch_out()) && ((tpl = transport_punch_location()) != 0)) {
            guint track_canvas_width,track_canvas_height;
            track_canvas->get_size(track_canvas_width,track_canvas_height);
            if (Config->get_punch_in()) {
                  transport_punch_range_rect->property_x1() = frame_to_pixel (tpl->start());
                  transport_punch_range_rect->property_x2() = (Config->get_punch_out() ? frame_to_pixel (tpl->end()) : frame_to_pixel (JACK_MAX_FRAMES));
            } else {
                  transport_punch_range_rect->property_x1() = 0;
                  transport_punch_range_rect->property_x2() = (Config->get_punch_out() ? frame_to_pixel (tpl->end()) : track_canvas_width);
            }
            
            if (visibility) {
                    transport_punch_range_rect->show();
            }
      } else if (visibility) {
              transport_punch_range_rect->hide();
      }
}

void
Editor::marker_selection_changed ()
{
      if (session && session->deletion_in_progress()) {
            return;
      }

      for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
            LocationMarkers* lam = i->second;

            if (lam->start) {
                  lam->start->hide_line();
            } 

            if (lam->end) {
                  lam->end->hide_line();
            }
      }

      edit_point_clock_connection_a.disconnect();
      edit_point_clock_connection_b.disconnect();

      if (selection->markers.empty()) {
            edit_point_clock.set (0);
            return;
      }

      for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
            (*x)->add_line (cursor_group, 0, canvas_height);
            (*x)->show_line ();
      }

      edit_point_clock.set (selection->markers.front()->position());

      bool ignored;
      Location* loc = find_location_from_marker (selection->markers.front(), ignored);

      if (loc) {
            edit_point_clock_connection_a = loc->changed.connect (mem_fun (*this, &Editor::selected_marker_moved));
            edit_point_clock_connection_b = loc->start_changed.connect (mem_fun (*this, &Editor::selected_marker_moved));
      }
}

void
Editor::selected_marker_moved (Location* loc)
{
      edit_point_clock.set (loc->start());
}

struct SortLocationsByPosition { 
    bool operator() (Location* a, Location* b) {
          return a->start() < b->start();
    }
};

void
Editor::goto_nth_marker (int n)
{
      if (!session) {
            return;
      }
      const Locations::LocationList& l (session->locations()->list());
      Locations::LocationList ordered;
      ordered = l;

      SortLocationsByPosition cmp;
      ordered.sort (cmp);
      
      for (Locations::LocationList::iterator i = ordered.begin(); n >= 0 && i != ordered.end(); ++i) {
            if ((*i)->is_mark() && !(*i)->is_hidden() && !(*i)->is_start()) {
                  if (n == 0) {
                        session->request_locate ((*i)->start(), session->transport_rolling());
                        break;
                  }
                  --n;
            }
      }
}

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