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editor_route_list.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 <algorithm>
#include <cstdlib>
#include <cmath>

#include "editor.h"
#include "keyboard.h"
#include "ardour_ui.h"
#include "audio_time_axis.h"
#include "mixer_strip.h"
#include "gui_thread.h"
#include "actions.h"

#include <ardour/route.h>
#include <ardour/audio_track.h>

#include "i18n.h"

using namespace sigc;
using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;
using namespace Glib;

const char* _order_key = N_("editor");

void
Editor::handle_new_route (Session::RouteList& routes)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::handle_new_route), routes));
      
      TimeAxisView *tv;
      AudioTimeAxisView *atv;
      TreeModel::Row parent;
      TreeModel::Row row;

      route_redisplay_does_not_sync_order_keys = true;
      no_route_list_redisplay = true;

      for (Session::RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
            boost::shared_ptr<Route> route = (*x);

            if (route->hidden()) {
                  continue;
            }
            
            tv = new AudioTimeAxisView (*this, *session, route, *track_canvas);
            //cerr << "Editor::handle_new_route() called on " << route->name() << endl;//DEBUG
            row = *(route_display_model->append ());
            
            row[route_display_columns.route] = route;
            row[route_display_columns.text] = route->name();
            row[route_display_columns.visible] = tv->marked_for_display();
            row[route_display_columns.tv] = tv;

            track_views.push_back (tv);
            
            if ((atv = dynamic_cast<AudioTimeAxisView*> (tv)) != 0) {
                  /* added a new fresh one at the end */
                  if (atv->route()->order_key(_order_key) == -1) {
                        atv->route()->set_order_key (_order_key, route_display_model->children().size()-1);
                  }
                  atv->effective_gain_display ();
            }

            route->gui_changed.connect (mem_fun(*this, &Editor::handle_gui_changes));
            tv->GoingAway.connect (bind (mem_fun(*this, &Editor::remove_route), tv));
      }

      no_route_list_redisplay = false;

      redisplay_route_list ();

      if (show_editor_mixer_when_tracks_arrive) {
            show_editor_mixer (true);
      }
      
      route_redisplay_does_not_sync_order_keys = false;
}

void
Editor::handle_gui_changes (const string & what, void *src)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::handle_gui_changes), what, src));

      if (what == "track_height") {
            /* Optional :make tracks change height while it happens, instead 
               of on first-idle
            */
            //track_canvas->update_now ();
            redisplay_route_list ();
      }

      if (what == "visible_tracks") {
            redisplay_route_list ();
      }
}

void
Editor::remove_route (TimeAxisView *tv)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::remove_route), tv));

      TrackViewList::iterator i;
      TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator ri;

      if (tv == entered_track) {
            entered_track = 0;
      }

      /* the core model has changed, there is no need to sync 
         view orders.
      */

      route_redisplay_does_not_sync_order_keys = true;

      for (ri = rows.begin(); ri != rows.end(); ++ri) {
            if ((*ri)[route_display_columns.tv] == tv) {
                  route_display_model->erase (ri);
                  break;
            }
      }

      route_redisplay_does_not_sync_order_keys = false;

      if ((i = find (track_views.begin(), track_views.end(), tv)) != track_views.end()) {
            track_views.erase (i);
      }

      /* since the editor mixer goes away when you remove a route, set the
       * button to inactive and untick the menu option
       */

      ActionManager::uncheck_toggleaction ("<Actions>/Editor/show-editor-mixer");
}

void
Editor::route_name_changed (TimeAxisView *tv)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::route_name_changed), tv));
      
      TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator i;
      
      for (i = rows.begin(); i != rows.end(); ++i) {
            if ((*i)[route_display_columns.tv] == tv) {
                  (*i)[route_display_columns.text] = tv->name();
                  break;
            }
      } 
}

void
Editor::update_route_visibility ()
{
      TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator i;
      
      no_route_list_redisplay = true;

      for (i = rows.begin(); i != rows.end(); ++i) {
            TimeAxisView *tv = (*i)[route_display_columns.tv];
            (*i)[route_display_columns.visible] = tv->marked_for_display ();
      }

      no_route_list_redisplay = false;
      redisplay_route_list ();
}

void
Editor::hide_track_in_display (TimeAxisView& tv, bool temponly)
{
      TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator i;

      for (i = rows.begin(); i != rows.end(); ++i) {
            if ((*i)[route_display_columns.tv] == &tv) { 
                  (*i)[route_display_columns.visible] = false;
                  break;
            }
      }

      AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*> (&tv);

      if (atv && current_mixer_strip && (atv->route() == current_mixer_strip->route())) {
            // this will hide the mixer strip
            set_selected_mixer_strip (tv);
      }
}

void
Editor::show_track_in_display (TimeAxisView& tv)
{
      TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator i;
      
      for (i = rows.begin(); i != rows.end(); ++i) {
            if ((*i)[route_display_columns.tv] == &tv) { 
                  (*i)[route_display_columns.visible] = true;
                  break;
            }
      }
}

void
Editor::sync_order_keys (const char *src)
{
      vector<int> neworder;
      TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator ri;

      if ((strcmp (src, _order_key) == 0) || !session || (session->state_of_the_state() & Session::Loading) || rows.empty()) {
            return;
      }

      for (ri = rows.begin(); ri != rows.end(); ++ri) {
            neworder.push_back (0);
      }

      bool changed = false;
      int order;

      for (order = 0, ri = rows.begin(); ri != rows.end(); ++ri, ++order) {
            boost::shared_ptr<Route> route = (*ri)[route_display_columns.route];

            int old_key = order;
            int new_key = route->order_key (_order_key);

            neworder[new_key] = old_key;

            if (new_key != old_key) {
                  changed = true;
            }
      }

      if (changed) {
            route_redisplay_does_not_reset_order_keys = true;
            route_display_model->reorder (neworder);
            route_redisplay_does_not_reset_order_keys = false;
      }
}

void
Editor::redisplay_route_list ()
{
      TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator i;
      uint32_t position;
      uint32_t order;
      int n;

      if (no_route_list_redisplay) {
            return;
      }

      if (session && (rows.size() > session->nroutes())) {
            /* temporary condition during a drag-n-drop */
            return;
      }

      for (n = 0, order = 0, position = 0, i = rows.begin(); i != rows.end(); ++i) {
            TimeAxisView *tv = (*i)[route_display_columns.tv];
            boost::shared_ptr<Route> route = (*i)[route_display_columns.route];

            if (tv == 0) {
                  // just a "title" row
                  continue;
            }

            if (!route_redisplay_does_not_reset_order_keys) {
                  
                  /* this reorder is caused by user action, so reassign sort order keys
                     to tracks.
                  */
                  
                  route->set_order_key (_order_key, order);
            }

            bool visible = (*i)[route_display_columns.visible];

            if (visible) {
                  tv->set_marked_for_display (true);
                  position += tv->show_at (position, n, &edit_controls_vbox);
                  tv->clip_to_viewport ();
            } else {
                  tv->set_marked_for_display (false);
                  tv->hide ();
            }
            
            ++order;
            ++n;
      }

      full_canvas_height = position + canvas_timebars_vsize;
      vertical_adjustment.set_upper (full_canvas_height);
      if ((vertical_adjustment.get_value() + canvas_height) > vertical_adjustment.get_upper()) {
            /* 
               We're increasing the size of the canvas while the bottom is visible.
               We scroll down to keep in step with the controls layout.
            */
            vertical_adjustment.set_value (full_canvas_height - canvas_height);
      } 

      if (!route_redisplay_does_not_reset_order_keys && !route_redisplay_does_not_sync_order_keys) {
            session->sync_order_keys (_order_key);
      }
}

void
Editor::hide_all_tracks (bool with_select)
{
      TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator i;

      no_route_list_redisplay = true;

      for (i = rows.begin(); i != rows.end(); ++i) {
            
            TreeModel::Row row = (*i);
            TimeAxisView *tv = row[route_display_columns.tv];

            if (tv == 0) {
                  continue;
            }
            
            row[route_display_columns.visible] = false;
      }

      no_route_list_redisplay = false;
      redisplay_route_list ();

      /* XXX this seems like a hack and half, but its not clear where to put this
         otherwise.
      */

      //reset_scrolling_region ();
}

void
Editor::build_route_list_menu ()
{
        using namespace Menu_Helpers;
      using namespace Gtk;

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

      items.push_back (MenuElem (_("Show All"), mem_fun(*this, &Editor::show_all_routes)));
      items.push_back (MenuElem (_("Hide All"), mem_fun(*this, &Editor::hide_all_routes)));
      items.push_back (MenuElem (_("Show All Audio Tracks"), mem_fun(*this, &Editor::show_all_audiotracks)));
      items.push_back (MenuElem (_("Hide All Audio Tracks"), mem_fun(*this, &Editor::hide_all_audiotracks)));
      items.push_back (MenuElem (_("Show All Audio Busses"), mem_fun(*this, &Editor::show_all_audiobus)));
      items.push_back (MenuElem (_("Hide All Audio Busses"), mem_fun(*this, &Editor::hide_all_audiobus)));

}

void
Editor::set_all_tracks_visibility (bool yn)
{
        TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator i;

      no_route_list_redisplay = true;

      for (i = rows.begin(); i != rows.end(); ++i) {

            TreeModel::Row row = (*i);
            TimeAxisView* tv = row[route_display_columns.tv];

            if (tv == 0) {
                  continue;
            }
            
            (*i)[route_display_columns.visible] = yn;
      }

      no_route_list_redisplay = false;
      redisplay_route_list ();
}

void
Editor::set_all_audio_visibility (int tracks, bool yn) 
{
        TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator i;

      no_route_list_redisplay = true;

      for (i = rows.begin(); i != rows.end(); ++i) {
            TreeModel::Row row = (*i);
            TimeAxisView* tv = row[route_display_columns.tv];
            AudioTimeAxisView* atv;

            if (tv == 0) {
                  continue;
            }

            if ((atv = dynamic_cast<AudioTimeAxisView*>(tv)) != 0) {
                  switch (tracks) {
                  case 0:
                        (*i)[route_display_columns.visible] = yn;
                        break;

                  case 1:
                        if (atv->is_audio_track()) {
                              (*i)[route_display_columns.visible] = yn;
                        }
                        break;
                        
                  case 2:
                        if (!atv->is_audio_track()) {
                              (*i)[route_display_columns.visible] = yn;
                        }
                        break;
                  }
            }
      }

      no_route_list_redisplay = false;
      redisplay_route_list ();
}

void
Editor::hide_all_routes ()
{
      set_all_tracks_visibility (false);
}

void
Editor::show_all_routes ()
{
      set_all_tracks_visibility (true);
}

void
Editor::show_all_audiobus ()
{
      set_all_audio_visibility (2, true);
}
void
Editor::hide_all_audiobus ()
{
      set_all_audio_visibility (2, false);
}

void
Editor::show_all_audiotracks()
{
      set_all_audio_visibility (1, true);
}
void
Editor::hide_all_audiotracks ()
{
      set_all_audio_visibility (1, false);
}

bool
Editor::route_list_display_button_press (GdkEventButton* ev)
{
      if (Keyboard::is_context_menu_event (ev)) {
            show_route_list_menu ();
            return true;
      }

      TreeIter iter;
      TreeModel::Path path;
      TreeViewColumn* column;
      int cellx;
      int celly;
      
      if (!route_list_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
            return false;
      }

      switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
      case 0:
            if ((iter = route_display_model->get_iter (path))) {
                  TimeAxisView* tv = (*iter)[route_display_columns.tv];
                  if (tv) {
                        bool visible = (*iter)[route_display_columns.visible];
                        (*iter)[route_display_columns.visible] = !visible;
                  }
            }
            return true;

      case 1:
            /* allow normal processing to occur */
            return false;

      default:
            break;
      }

      return false;
}

void
Editor::show_route_list_menu()
{
      if (route_list_menu == 0) {
            build_route_list_menu ();
      }

      route_list_menu->popup (1, gtk_get_current_event_time());
}

bool
Editor::route_list_selection_filter (const Glib::RefPtr<TreeModel>& model, const TreeModel::Path& path, bool yn)
{
      return true;
}

struct EditorOrderRouteSorter {
    bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
          /* use of ">" forces the correct sort order */
          return a->order_key (_order_key) < b->order_key (_order_key);
    }
};

void
Editor::initial_route_list_display ()
{
      boost::shared_ptr<Session::RouteList> routes = session->get_routes();
      Session::RouteList r (*routes);
      EditorOrderRouteSorter sorter;

      r.sort (sorter);
      
      no_route_list_redisplay = true;

      route_display_model->clear ();

      handle_new_route (r);

      no_route_list_redisplay = false;

      redisplay_route_list ();
}

void
Editor::track_list_reorder (const Gtk::TreeModel::Path& path,const Gtk::TreeModel::iterator& iter, int* new_order)
{
      route_redisplay_does_not_sync_order_keys = true;
      session->set_remote_control_ids();
      redisplay_route_list ();
      route_redisplay_does_not_sync_order_keys = false;
}

void
Editor::route_list_change (const Gtk::TreeModel::Path& path,const Gtk::TreeModel::iterator& iter)
{
      /* never reset order keys because of a property change */
      route_redisplay_does_not_reset_order_keys = true;
      session->set_remote_control_ids();
      redisplay_route_list ();
      route_redisplay_does_not_reset_order_keys = false;
}

void
Editor::route_list_delete (const Gtk::TreeModel::Path& path)
{
      /* this could require an order reset & sync */
      session->set_remote_control_ids();
      redisplay_route_list ();
}

void  
Editor::route_list_display_drag_data_received (const RefPtr<Gdk::DragContext>& context,
                                    int x, int y, 
                                    const SelectionData& data,
                                    guint info, guint time)
{
      if (data.get_target() == "GTK_TREE_MODEL_ROW") {
            route_list_display.on_drag_data_received (context, x, y, data, info, time);
            return;
      }
      context->drag_finish (true, false, time);
}

void
Editor::foreach_time_axis_view (sigc::slot<void,TimeAxisView&> theslot)
{
      for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
            theslot (**i);
      }
}

void
Editor::move_selected_tracks (bool up)
{
      if (selection->tracks.empty()) {
            return;
      }

      typedef pair<TimeAxisView*,boost::shared_ptr<Route> > ViewRoute;
      list<ViewRoute> view_routes;
      vector<int> neworder;
      TreeModel::Children rows = route_display_model->children();
      TreeModel::Children::iterator ri;

      for (ri = rows.begin(); ri != rows.end(); ++ri) {
            TimeAxisView* tv = (*ri)[route_display_columns.tv];
            boost::shared_ptr<Route> route = (*ri)[route_display_columns.route];

            view_routes.push_back (ViewRoute (tv, route));
      }

      list<ViewRoute>::iterator trailing;
      list<ViewRoute>::iterator leading;
      
      if (up) {
            
            trailing = view_routes.begin();
            leading = view_routes.begin();
            
            ++leading;
            
            while (leading != view_routes.end()) {
                  if (selection->selected (leading->first)) {
                        view_routes.insert (trailing, ViewRoute (leading->first, leading->second));
                        leading = view_routes.erase (leading);
                  } else {
                        ++leading;
                        ++trailing;
                  }
            }

      } else {

            /* if we could use reverse_iterator in list::insert, this code
               would be a beautiful reflection of the code above. but we can't
               and so it looks like a bit of a mess.
            */

            trailing = view_routes.end();
            leading = view_routes.end();

            --leading; if (leading == view_routes.begin()) { return; }
            --leading;
            --trailing;

            while (1) {

                  if (selection->selected (leading->first)) {
                        list<ViewRoute>::iterator tmp;

                        /* need to insert *after* trailing, not *before* it,
                           which is what insert (iter, val) normally does.
                        */

                        tmp = trailing;
                        tmp++;

                        view_routes.insert (tmp, ViewRoute (leading->first, leading->second));
                              
                        /* can't use iter = cont.erase (iter); form here, because
                           we need iter to move backwards.
                        */

                        tmp = leading;
                        --tmp;

                        bool done = false;

                        if (leading == view_routes.begin()) {
                              /* the one we've just inserted somewhere else
                                 was the first in the list. erase this copy,
                                 and then break, because we're done.
                              */
                              done = true;
                        }

                        view_routes.erase (leading);
                        
                        if (done) {
                              break;
                        }

                        leading = tmp;

                  } else {
                        if (leading == view_routes.begin()) {
                              break;
                        }
                        --leading;
                        --trailing;
                  }
            };
      }

      for (leading = view_routes.begin(); leading != view_routes.end(); ++leading) {
            neworder.push_back (leading->second->order_key (_order_key));
      }

      route_display_model->reorder (neworder);

      session->sync_order_keys (_order_key);
}

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