gtk2_ardour/mixer_ui.cc

   1 /*
   2     Copyright (C) 2000-2004 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifdef WAF_BUILD
  21 #include "gtk2ardour-config.h"
  22 #endif
  23
  24 #include <algorithm>
  25 #include <map>
  26 #include <sigc++/bind.h>
  27
  28 #include <gtkmm/accelmap.h>
  29
  30 #include "pbd/convert.h"
  31 #include "pbd/stacktrace.h"
  32 #include "pbd/unwind.h"
  33
  34 #include <glibmm/threads.h>
  35
  36 #include <gtkmm2ext/gtk_ui.h>
  37 #include <gtkmm2ext/keyboard.h>
  38 #include <gtkmm2ext/utils.h>
  39 #include <gtkmm2ext/tearoff.h>
  40 #include <gtkmm2ext/window_title.h>
  41 #include <gtkmm2ext/doi.h>
  42
  43 #include "ardour/amp.h"
  44 #include "ardour/debug.h"
  45 #include "ardour/audio_track.h"
  46 #include "ardour/midi_track.h"
  47 #include "ardour/plugin_manager.h"
  48 #include "ardour/route_group.h"
  49 #include "ardour/session.h"
  50 #include "ardour/vca.h"
  51 #include "ardour/vca_manager.h"
  52
  53 #include "keyboard.h"
  54 #include "mixer_ui.h"
  55 #include "mixer_strip.h"
  56 #include "monitor_section.h"
  57 #include "plugin_selector.h"
  58 #include "public_editor.h"
  59 #include "ardour_ui.h"
  60 #include "prompter.h"
  61 #include "utils.h"
  62 #include "route_sorter.h"
  63 #include "actions.h"
  64 #include "gui_thread.h"
  65 #include "mixer_group_tabs.h"
  66 #include "timers.h"
  67 #include "ui_config.h"
  68 #include "vca_master_strip.h"
  69
  70 #include "i18n.h"
  71
  72 using namespace ARDOUR;
  73 using namespace ARDOUR_UI_UTILS;
  74 using namespace PBD;
  75 using namespace Gtk;
  76 using namespace Glib;
  77 using namespace Gtkmm2ext;
  78 using namespace std;
  79
  80 using PBD::atoi;
  81 using PBD::Unwinder;
  82
  83 Mixer_UI* Mixer_UI::_instance = 0;
  84
  85 Mixer_UI*
  86 Mixer_UI::instance ()
  87 {
  88         if (!_instance) {
  89                 _instance  = new Mixer_UI;
  90         }
  91
  92         return _instance;
  93 }
  94
  95 Mixer_UI::Mixer_UI ()
  96         : Tabbable (_content, _("Mixer"))
  97         , no_track_list_redisplay (false)
  98         , in_group_row_change (false)
  99         , track_menu (0)
 100         , _monitor_section (0)
 101         , _plugin_selector (0)
 102         , _strip_width (UIConfiguration::instance().get_default_narrow_ms() ? Narrow : Wide)
 103         , ignore_reorder (false)
 104         , _in_group_rebuild_or_clear (false)
 105         , _route_deletion_in_progress (false)
 106         , _following_editor_selection (false)
 107         , _maximised (false)
 108         , _show_mixer_list (true)
 109 {
 110         Stripable::PresentationInfoChange.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_presentation_info, this), gui_context());
 111
 112         /* bindings was already set in MixerActor constructor */
 113
 114         _content.set_data ("ardour-bindings", bindings);
 115
 116         scroller.set_can_default (true);
 117         // set_default (scroller);
 118
 119         scroller_base.set_flags (Gtk::CAN_FOCUS);
 120         scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 121         scroller_base.set_name ("MixerWindow");
 122         scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 123
 124         /* set up drag-n-drop */
 125         vector<TargetEntry> target_table;
 126         target_table.push_back (TargetEntry ("PluginFavoritePtr"));
 127         scroller_base.drag_dest_set (target_table);
 128         scroller_base.signal_drag_data_received().connect (sigc::mem_fun(*this, &Mixer_UI::scroller_drag_data_received));
 129
 130         // add as last item of strip packer
 131         strip_packer.pack_end (scroller_base, true, true);
 132
 133         _group_tabs = new MixerGroupTabs (this);
 134         VBox* b = manage (new VBox);
 135         b->pack_start (*_group_tabs, PACK_SHRINK);
 136         b->pack_start (strip_packer);
 137         b->show_all ();
 138
 139         scroller.add (*b);
 140         scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 141
 142         setup_track_display ();
 143
 144         group_model = ListStore::create (group_columns);
 145         group_display.set_model (group_model);
 146         group_display.append_column (_("Group"), group_columns.text);
 147         group_display.append_column (_("Show"), group_columns.visible);
 148         group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
 149         group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
 150         group_display.get_column (0)->set_expand(true);
 151         group_display.get_column (1)->set_expand(false);
 152         group_display.set_name ("EditGroupList");
 153         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 154         group_display.set_reorderable (true);
 155         group_display.set_headers_visible (true);
 156         group_display.set_rules_hint (true);
 157         group_display.set_can_focus(false);
 158
 159         /* name is directly editable */
 160
 161         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
 162         name_cell->property_editable() = true;
 163         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 164
 165         /* use checkbox for the active column */
 166
 167         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (1));
 168         active_cell->property_activatable() = true;
 169         active_cell->property_radio() = false;
 170
 171         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 172         /* We use this to notice drag-and-drop reorders of the group list */
 173         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 174         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 175
 176         group_display_scroller.add (group_display);
 177         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 178
 179         HBox* route_group_display_button_box = manage (new HBox());
 180
 181         Button* route_group_add_button = manage (new Button ());
 182         Button* route_group_remove_button = manage (new Button ());
 183
 184         Widget* w;
 185
 186         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 187         w->show();
 188         route_group_add_button->add (*w);
 189
 190         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
 191         w->show();
 192         route_group_remove_button->add (*w);
 193
 194         route_group_display_button_box->set_homogeneous (true);
 195
 196         route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
 197         route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
 198
 199         route_group_display_button_box->add (*route_group_add_button);
 200         route_group_display_button_box->add (*route_group_remove_button);
 201
 202         group_display_vbox.pack_start (group_display_scroller, true, true);
 203         group_display_vbox.pack_start (*route_group_display_button_box, false, false);
 204
 205         group_display_frame.set_name ("BaseFrame");
 206         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 207         group_display_frame.add (group_display_vbox);
 208
 209
 210         list<TargetEntry> target_list;
 211         target_list.push_back (TargetEntry ("PluginPresetPtr"));
 212
 213         favorite_plugins_model = PluginTreeStore::create (favorite_plugins_columns);
 214         favorite_plugins_display.set_model (favorite_plugins_model);
 215         favorite_plugins_display.append_column (_("Favorite Plugins"), favorite_plugins_columns.name);
 216         favorite_plugins_display.set_name ("EditGroupList");
 217         favorite_plugins_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 218         favorite_plugins_display.set_reorderable (false);
 219         favorite_plugins_display.set_headers_visible (true);
 220         favorite_plugins_display.set_rules_hint (true);
 221         favorite_plugins_display.set_can_focus (false);
 222         favorite_plugins_display.add_object_drag (favorite_plugins_columns.plugin.index(), "PluginFavoritePtr");
 223         favorite_plugins_display.set_drag_column (favorite_plugins_columns.name.index());
 224         favorite_plugins_display.add_drop_targets (target_list);
 225         favorite_plugins_display.signal_row_activated().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_activated));
 226         favorite_plugins_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_button_press), false);
 227         favorite_plugins_display.signal_drop.connect (sigc::mem_fun (*this, &Mixer_UI::plugin_drop));
 228         favorite_plugins_display.signal_row_expanded().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 229         favorite_plugins_display.signal_row_collapsed().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 230         favorite_plugins_model->signal_row_has_child_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::sync_treeview_favorite_ui_state));
 231
 232         favorite_plugins_scroller.add (favorite_plugins_display);
 233         favorite_plugins_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 234
 235         favorite_plugins_frame.set_name ("BaseFrame");
 236         favorite_plugins_frame.set_shadow_type (Gtk::SHADOW_IN);
 237         favorite_plugins_frame.add (favorite_plugins_scroller);
 238
 239         rhs_pane1.pack1 (favorite_plugins_frame, false, true);
 240         rhs_pane1.pack2 (track_display_frame);
 241         rhs_pane2.pack1 (rhs_pane1);
 242         rhs_pane2.pack2 (group_display_frame);
 243
 244         list_vpacker.pack_start (rhs_pane2, true, true);
 245
 246         vca_scroller.add (vca_packer);
 247         vca_scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 248
 249         inner_pane.pack1 (scroller);
 250         inner_pane.pack2 (vca_scroller);
 251
 252         global_hpacker.pack_start (inner_pane, true, true);
 253         global_hpacker.pack_start (out_packer, false, false);
 254
 255         list_hpane.pack1(list_vpacker, false, true);
 256         list_hpane.pack2(global_hpacker, true, false);
 257
 258         rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 259                                                         static_cast<Gtk::Paned*> (&rhs_pane1)));
 260         rhs_pane2.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 261                                                         static_cast<Gtk::Paned*> (&rhs_pane2)));
 262         list_hpane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 263                                                          static_cast<Gtk::Paned*> (&list_hpane)));
 264         inner_pane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 265                                                          static_cast<Gtk::Paned*> (&inner_pane)));
 266
 267         _content.pack_start (list_hpane, true, true);
 268
 269         update_title ();
 270
 271         route_group_display_button_box->show();
 272         route_group_add_button->show();
 273         route_group_remove_button->show();
 274
 275         _content.show ();
 276         _content.set_name ("MixerWindow");
 277
 278         global_hpacker.show();
 279         scroller.show();
 280         scroller_base.show();
 281         scroller_hpacker.show();
 282         mixer_scroller_vpacker.show();
 283         list_vpacker.show();
 284         group_display_button_label.show();
 285         group_display_button.show();
 286         group_display_scroller.show();
 287         favorite_plugins_scroller.show();
 288         group_display_vbox.show();
 289         group_display_frame.show();
 290         favorite_plugins_frame.show();
 291         rhs_pane1.show();
 292         rhs_pane2.show();
 293         strip_packer.show();
 294         inner_pane.show ();
 295         vca_scroller.show();
 296         vca_packer.show();
 297         out_packer.show();
 298         list_hpane.show();
 299         group_display.show();
 300         favorite_plugins_display.show();
 301
 302         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 303
 304 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 305         _plugin_selector = new PluginSelector (PluginManager::instance ());
 306 #else
 307 #error implement deferred Plugin-Favorite list
 308 #endif
 309         PluginManager::instance ().PluginListChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 310         PluginManager::instance ().PluginStatusesChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 311         ARDOUR::Plugin::PresetsChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 312 }
 313
 314 Mixer_UI::~Mixer_UI ()
 315 {
 316         if (_monitor_section) {
 317                 monitor_section_detached ();
 318                 delete _monitor_section;
 319         }
 320         delete _plugin_selector;
 321 }
 322
 323 void
 324 Mixer_UI::track_editor_selection ()
 325 {
 326         PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
 327 }
 328
 329 Gtk::Window*
 330 Mixer_UI::use_own_window (bool and_fill_it)
 331 {
 332         bool new_window = !own_window();
 333
 334         Gtk::Window* win = Tabbable::use_own_window (and_fill_it);
 335
 336
 337         if (win && new_window) {
 338                 win->set_name ("MixerWindow");
 339                 ARDOUR_UI::instance()->setup_toplevel_window (*win, _("Mixer"), this);
 340                 win->signal_scroll_event().connect (sigc::mem_fun (*this, &Mixer_UI::on_scroll_event), false);
 341                 win->signal_event().connect (sigc::bind (sigc::ptr_fun (&Keyboard::catch_user_event_for_pre_dialog_focus), win));
 342                 win->set_data ("ardour-bindings", bindings);
 343                 update_title ();
 344         }
 345
 346         return win;
 347 }
 348
 349 void
 350 Mixer_UI::show_window ()
 351 {
 352         Tabbable::show_window ();
 353
 354         /* show/hide group tabs as required */
 355         parameter_changed ("show-group-tabs");
 356
 357         /* now reset each strips width so the right widgets are shown */
 358         MixerStrip* ms;
 359
 360         TreeModel::Children rows = track_model->children();
 361         TreeModel::Children::iterator ri;
 362
 363         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 364                 ms = (*ri)[track_columns.strip];
 365                 if (!ms) {
 366                         continue;
 367                 }
 368                 ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 369                 /* Fix visibility of mixer strip stuff */
 370                 ms->parameter_changed (X_("mixer-element-visibility"));
 371         }
 372
 373         /* force focus into main area */
 374         scroller_base.grab_focus ();
 375 }
 376
 377 void
 378 Mixer_UI::add_masters (VCAList& vcas)
 379 {
 380         for (VCAList::iterator v = vcas.begin(); v != vcas.end(); ++v) {
 381
 382                 VCAMasterStrip* vms = new VCAMasterStrip (_session, *v);
 383
 384                 TreeModel::Row row = *(track_model->append());
 385                 row[track_columns.text] = (*v)->name();
 386                 row[track_columns.visible] = true;
 387                 row[track_columns.vca] = vms;
 388
 389                 vms->CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_master, this, _1), gui_context());
 390         }
 391
 392         redisplay_track_list ();
 393 }
 394
 395 void
 396 Mixer_UI::remove_master (VCAMasterStrip* vms)
 397 {
 398         if (_session && _session->deletion_in_progress()) {
 399                 /* its all being taken care of */
 400                 return;
 401         }
 402
 403         TreeModel::Children rows = track_model->children();
 404         TreeModel::Children::iterator ri;
 405
 406         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 407                 if ((*ri)[track_columns.vca] == vms) {
 408                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 409                         track_model->erase (ri);
 410                         break;
 411                 }
 412         }
 413 }
 414
 415 void
 416 Mixer_UI::add_strips (RouteList& routes)
 417 {
 418         Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 419         uint32_t nroutes = 0;
 420
 421         for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
 422                 boost::shared_ptr<Route> r = (*it)[track_columns.route];
 423
 424                 if (!r) {
 425                         continue;
 426                 }
 427
 428                 nroutes++;
 429
 430                 if (r->presentation_info().group_order() == (routes.front()->presentation_info().group_order() + routes.size())) {
 431                         insert_iter = it;
 432                         break;
 433                 }
 434         }
 435
 436         if (nroutes) {
 437                 _selection.clear_routes ();
 438         }
 439
 440         MixerStrip* strip;
 441
 442         try {
 443                 no_track_list_redisplay = true;
 444                 track_display.set_model (Glib::RefPtr<ListStore>());
 445
 446                 for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
 447                         boost::shared_ptr<Route> route = (*x);
 448
 449                         if (route->is_auditioner()) {
 450                                 continue;
 451                         }
 452
 453                         if (route->is_monitor()) {
 454
 455                                 if (!_monitor_section) {
 456                                         _monitor_section = new MonitorSection (_session);
 457
 458                                         XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 459                                         if (mnode) {
 460                                                 _monitor_section->tearoff().set_state (*mnode);
 461                                         }
 462                                 }
 463
 464                                 out_packer.pack_end (_monitor_section->tearoff(), false, false);
 465                                 _monitor_section->set_session (_session);
 466                                 _monitor_section->tearoff().show_all ();
 467
 468                                 _monitor_section->tearoff().Detach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_detached));
 469                                 _monitor_section->tearoff().Attach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_attached));
 470
 471                                 monitor_section_attached ();
 472
 473                                 route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 474
 475                                 /* no regular strip shown for control out */
 476
 477                                 continue;
 478                         }
 479
 480                         strip = new MixerStrip (*this, _session, route);
 481                         strips.push_back (strip);
 482
 483                         UIConfiguration::instance().get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 484
 485                         if (strip->width_owner() != strip) {
 486                                 strip->set_width_enum (_strip_width, this);
 487                         }
 488
 489                         show_strip (strip);
 490
 491                         TreeModel::Row row = *(track_model->insert(insert_iter));
 492                         row[track_columns.text] = route->name();
 493                         row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
 494                         row[track_columns.route] = route;
 495                         row[track_columns.strip] = strip;
 496                         row[track_columns.vca] = 0;
 497
 498                         if (nroutes != 0) {
 499                                 _selection.add (strip);
 500                         }
 501
 502                         route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
 503
 504                         strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 505                         strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 506                 }
 507
 508         } catch (const std::exception& e) {
 509                 error << string_compose (_("Error adding GUI elements for new tracks/busses %1"), e.what()) << endmsg;
 510         }
 511
 512         no_track_list_redisplay = false;
 513         track_display.set_model (track_model);
 514
 515         sync_presentation_info_from_treeview ();
 516         redisplay_track_list ();
 517 }
 518
 519 void
 520 Mixer_UI::deselect_all_strip_processors ()
 521 {
 522         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 523                 (*i)->deselect_all_processors();
 524         }
 525 }
 526
 527 void
 528 Mixer_UI::select_strip (MixerStrip& ms, bool add)
 529 {
 530         if (add) {
 531                 _selection.add (&ms);
 532         } else {
 533                 _selection.set (&ms);
 534         }
 535 }
 536
 537 void
 538 Mixer_UI::select_none ()
 539 {
 540         _selection.clear_routes();
 541         deselect_all_strip_processors();
 542 }
 543
 544 void
 545 Mixer_UI::delete_processors ()
 546 {
 547         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 548                 (*i)->delete_processors();
 549         }
 550 }
 551
 552
 553 void
 554 Mixer_UI::remove_strip (MixerStrip* strip)
 555 {
 556         if (_session && _session->deletion_in_progress()) {
 557                 /* its all being taken care of */
 558                 return;
 559         }
 560
 561         TreeModel::Children rows = track_model->children();
 562         TreeModel::Children::iterator ri;
 563         list<MixerStrip *>::iterator i;
 564
 565         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 566                 strips.erase (i);
 567         }
 568
 569         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 570                 if ((*ri)[track_columns.strip] == strip) {
 571                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 572                         track_model->erase (ri);
 573                         break;
 574                 }
 575         }
 576 }
 577
 578 void
 579 Mixer_UI::sync_presentation_info_from_treeview ()
 580 {
 581         if (ignore_reorder || !_session || _session->deletion_in_progress() || (Config->get_remote_model() != MixerOrdered)) {
 582                 return;
 583         }
 584
 585         TreeModel::Children rows = track_model->children();
 586
 587         if (rows.empty()) {
 588                 return;
 589         }
 590
 591         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
 592
 593         TreeModel::Children::iterator ri;
 594         bool change = false;
 595         uint32_t order = 0;
 596
 597         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 598                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 599                 bool visible = (*ri)[track_columns.visible];
 600
 601
 602                 if (!route) {
 603                         continue;
 604                 }
 605
 606                 if (route->presentation_info().special()) {
 607                         continue;
 608                 }
 609
 610                 if (!visible) {
 611                         route->presentation_info().set_flag (PresentationInfo::Hidden);
 612                 } else {
 613                         route->presentation_info().unset_flag (PresentationInfo::Hidden);
 614                 }
 615
 616                 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("route %1 old order %2 new order %3\n", route->name(), route->presentation_info().group_order(), order));
 617
 618                 if (order != route->presentation_info().group_order()) {
 619                         route->set_presentation_group_order_explicit (order);
 620                         change = true;
 621                 }
 622
 623                 ++order;
 624         }
 625
 626         if (change) {
 627                 DEBUG_TRACE (DEBUG::OrderKeys, "... notify PI change from mixer GUI\n");
 628                 _session->notify_presentation_info_change ();
 629         }
 630 }
 631
 632 void
 633 Mixer_UI::sync_treeview_from_presentation_info ()
 634 {
 635         if (!_session || _session->deletion_in_progress()) {
 636                 return;
 637         }
 638
 639         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from order keys.\n");
 640
 641         /* we could get here after either a change in the Mixer or Editor sort
 642          * order, but either way, the mixer order keys reflect the intended
 643          * order for the GUI, so reorder the treeview model to match it.
 644          */
 645
 646         vector<int> neworder;
 647         TreeModel::Children rows = track_model->children();
 648         uint32_t old_order = 0;
 649         bool changed = false;
 650
 651         if (rows.empty()) {
 652                 return;
 653         }
 654
 655         OrderingKeys sorted;
 656         uint32_t vca_cnt = 0;
 657         uint32_t max_route_order_key = 0;
 658
 659         /* count number of Routes in track_model (there may be some odd reason
 660            why this is not the same as the number in the session, but here we
 661            care about the track model.
 662         */
 663
 664         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri) {
 665                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 666                 if (route) {
 667                         max_route_order_key = max (route->presentation_info().group_order(), max_route_order_key);
 668                 }
 669         }
 670
 671         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 672                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 673                 if (!route) {
 674                         /* VCAs need to sort after all routes. We don't display
 675                          * them in the same place (March 2016), but we don't
 676                          * want them intermixed in the track_model
 677                          */
 678                         sorted.push_back (OrderKeys (old_order, max_route_order_key + ++vca_cnt));
 679                 } else {
 680                         sorted.push_back (OrderKeys (old_order, route->presentation_info().group_order()));
 681                 }
 682         }
 683
 684         SortByNewDisplayOrder cmp;
 685
 686         sort (sorted.begin(), sorted.end(), cmp);
 687         neworder.assign (sorted.size(), 0);
 688
 689         uint32_t n = 0;
 690
 691         for (OrderingKeys::iterator sr = sorted.begin(); sr != sorted.end(); ++sr, ++n) {
 692
 693                 neworder[n] = sr->old_display_order;
 694
 695                 if (sr->old_display_order != n) {
 696                         changed = true;
 697                 }
 698
 699                 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order from %1 to %2\n",
 700                                                                sr->old_display_order, n));
 701         }
 702
 703         if (changed) {
 704                 Unwinder<bool> uw (ignore_reorder, true);
 705                 track_model->reorder (neworder);
 706         }
 707
 708         redisplay_track_list ();
 709 }
 710
 711 void
 712 Mixer_UI::follow_editor_selection ()
 713 {
 714         if (_following_editor_selection) {
 715                 return;
 716         }
 717
 718         _following_editor_selection = true;
 719         _selection.block_routes_changed (true);
 720
 721         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 722
 723         _selection.clear_routes ();
 724
 725         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 726                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
 727                 if (rtav) {
 728                         MixerStrip* ms = strip_by_route (rtav->route());
 729                         if (ms) {
 730                                 _selection.add (ms);
 731                         }
 732                 }
 733         }
 734
 735         _following_editor_selection = false;
 736         _selection.block_routes_changed (false);
 737 }
 738
 739
 740 MixerStrip*
 741 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 742 {
 743         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 744                 if ((*i)->route() == r) {
 745                         return (*i);
 746                 }
 747         }
 748
 749         return 0;
 750 }
 751
 752 bool
 753 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 754 {
 755         if (ev->button == 1) {
 756                 if (_selection.selected (strip)) {
 757                         /* primary-click: toggle selection state of strip */
 758                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 759                                 _selection.remove (strip);
 760                         } else if (_selection.routes.size() > 1) {
 761                                 /* de-select others */
 762                                 _selection.set (strip);
 763                         }
 764                 } else {
 765                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 766                                 _selection.add (strip);
 767                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 768
 769                                 if (!_selection.selected(strip)) {
 770
 771                                         /* extend selection */
 772
 773                                         vector<MixerStrip*> tmp;
 774                                         bool accumulate = false;
 775                                         bool found_another = false;
 776
 777                                         tmp.push_back (strip);
 778
 779                                         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 780                                                 if ((*i) == strip) {
 781                                                         /* hit clicked strip, start accumulating till we hit the first
 782                                                            selected strip
 783                                                         */
 784                                                         if (accumulate) {
 785                                                                 /* done */
 786                                                                 break;
 787                                                         } else {
 788                                                                 accumulate = true;
 789                                                         }
 790                                                 } else if (_selection.selected (*i)) {
 791                                                         /* hit selected strip. if currently accumulating others,
 792                                                            we're done. if not accumulating others, start doing so.
 793                                                         */
 794                                                         found_another = true;
 795                                                         if (accumulate) {
 796                                                                 /* done */
 797                                                                 break;
 798                                                         } else {
 799                                                                 accumulate = true;
 800                                                         }
 801                                                 } else {
 802                                                         if (accumulate) {
 803                                                                 tmp.push_back (*i);
 804                                                         }
 805                                                 }
 806                                         }
 807
 808                                         if (found_another) {
 809                                                 for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 810                                                         _selection.add (*i);
 811                                                 }
 812                                         } else
 813                                                 _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
 814                                 }
 815
 816                         } else {
 817                                 _selection.set (strip);
 818                         }
 819                 }
 820         }
 821
 822         return true;
 823 }
 824
 825 void
 826 Mixer_UI::set_session (Session* sess)
 827 {
 828         SessionHandlePtr::set_session (sess);
 829
 830         if (_plugin_selector) {
 831                 _plugin_selector->set_session (_session);
 832         }
 833
 834         _group_tabs->set_session (sess);
 835
 836         if (!_session) {
 837                 return;
 838         }
 839
 840         refill_favorite_plugins();
 841
 842         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 843         set_state (*node, 0);
 844
 845         update_title ();
 846
 847         initial_track_display ();
 848
 849         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
 850         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 851         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 852         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 853         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 854         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 855         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 856
 857         _session->vca_manager().VCAAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_masters, this, _1), gui_context());
 858
 859         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 860
 861         route_groups_changed ();
 862
 863         if (_visible) {
 864                 show_window();
 865         }
 866         start_updating ();
 867 }
 868
 869 void
 870 Mixer_UI::session_going_away ()
 871 {
 872         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 873
 874         _in_group_rebuild_or_clear = true;
 875         group_model->clear ();
 876         _in_group_rebuild_or_clear = false;
 877
 878         _selection.clear ();
 879         track_model->clear ();
 880
 881         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 882                 delete (*i);
 883         }
 884
 885         if (_monitor_section) {
 886                 _monitor_section->tearoff().hide_visible ();
 887         }
 888
 889         monitor_section_detached ();
 890
 891         strips.clear ();
 892
 893         stop_updating ();
 894
 895         SessionHandlePtr::session_going_away ();
 896
 897         _session = 0;
 898         update_title ();
 899 }
 900
 901 void
 902 Mixer_UI::track_visibility_changed (std::string const & path)
 903 {
 904         if (_session && _session->deletion_in_progress()) {
 905                 return;
 906         }
 907
 908         TreeIter iter;
 909
 910         if ((iter = track_model->get_iter (path))) {
 911                 MixerStrip* strip = (*iter)[track_columns.strip];
 912                 if (strip) {
 913                         bool visible = (*iter)[track_columns.visible];
 914
 915                         if (strip->set_marked_for_display (!visible)) {
 916                                 update_track_visibility ();
 917                         }
 918                 }
 919         }
 920 }
 921
 922 void
 923 Mixer_UI::update_track_visibility ()
 924 {
 925         TreeModel::Children rows = track_model->children();
 926         TreeModel::Children::iterator i;
 927
 928         {
 929                 Unwinder<bool> uw (no_track_list_redisplay, true);
 930
 931                 for (i = rows.begin(); i != rows.end(); ++i) {
 932                         MixerStrip *strip = (*i)[track_columns.strip];
 933                         if (strip) {
 934                                 (*i)[track_columns.visible] = strip->marked_for_display ();
 935                         }
 936                 }
 937
 938                 /* force presentation catch up with visibility changes
 939                  */
 940
 941                 sync_presentation_info_from_treeview ();
 942         }
 943
 944         redisplay_track_list ();
 945 }
 946
 947 void
 948 Mixer_UI::show_strip (MixerStrip* ms)
 949 {
 950         TreeModel::Children rows = track_model->children();
 951         TreeModel::Children::iterator i;
 952
 953         for (i = rows.begin(); i != rows.end(); ++i) {
 954
 955                 MixerStrip* strip = (*i)[track_columns.strip];
 956                 if (strip == ms) {
 957                         (*i)[track_columns.visible] = true;
 958                         redisplay_track_list ();
 959                         break;
 960                 }
 961         }
 962 }
 963
 964 void
 965 Mixer_UI::hide_strip (MixerStrip* ms)
 966 {
 967         TreeModel::Children rows = track_model->children();
 968         TreeModel::Children::iterator i;
 969
 970         for (i = rows.begin(); i != rows.end(); ++i) {
 971
 972                 MixerStrip* strip = (*i)[track_columns.strip];
 973                 if (strip == ms) {
 974                         (*i)[track_columns.visible] = false;
 975                         redisplay_track_list ();
 976                         break;
 977                 }
 978         }
 979 }
 980
 981 gint
 982 Mixer_UI::start_updating ()
 983 {
 984     fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
 985     return 0;
 986 }
 987
 988 gint
 989 Mixer_UI::stop_updating ()
 990 {
 991     fast_screen_update_connection.disconnect();
 992     return 0;
 993 }
 994
 995 void
 996 Mixer_UI::fast_update_strips ()
 997 {
 998         if (_content.is_mapped () && _session) {
 999                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1000                         (*i)->fast_update ();
1001                 }
1002         }
1003 }
1004
1005 void
1006 Mixer_UI::set_all_strips_visibility (bool yn)
1007 {
1008         TreeModel::Children rows = track_model->children();
1009         TreeModel::Children::iterator i;
1010
1011         {
1012                 Unwinder<bool> uw (no_track_list_redisplay, true);
1013
1014                 for (i = rows.begin(); i != rows.end(); ++i) {
1015
1016                         TreeModel::Row row = (*i);
1017                         MixerStrip* strip = row[track_columns.strip];
1018
1019                         if (!strip) {
1020                                 continue;
1021                         }
1022
1023                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1024                                 continue;
1025                         }
1026
1027                         (*i)[track_columns.visible] = yn;
1028                 }
1029         }
1030
1031         redisplay_track_list ();
1032 }
1033
1034
1035 void
1036 Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
1037 {
1038         TreeModel::Children rows = track_model->children();
1039         TreeModel::Children::iterator i;
1040
1041         {
1042                 Unwinder<bool> uw (no_track_list_redisplay, true);
1043
1044                 for (i = rows.begin(); i != rows.end(); ++i) {
1045                         TreeModel::Row row = (*i);
1046                         MixerStrip* strip = row[track_columns.strip];
1047
1048                         if (!strip) {
1049                                 continue;
1050                         }
1051
1052                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1053                                 continue;
1054                         }
1055
1056                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
1057                         boost::shared_ptr<MidiTrack> mt = strip->midi_track();
1058
1059                         switch (tracks) {
1060                         case 0:
1061                                 (*i)[track_columns.visible] = yn;
1062                                 break;
1063
1064                         case 1:
1065                                 if (at) { /* track */
1066                                         (*i)[track_columns.visible] = yn;
1067                                 }
1068                                 break;
1069
1070                         case 2:
1071                                 if (!at && !mt) { /* bus */
1072                                         (*i)[track_columns.visible] = yn;
1073                                 }
1074                                 break;
1075
1076                         case 3:
1077                                 if (mt) { /* midi-track */
1078                                         (*i)[track_columns.visible] = yn;
1079                                 }
1080                                 break;
1081                         }
1082                 }
1083         }
1084
1085         redisplay_track_list ();
1086 }
1087
1088 void
1089 Mixer_UI::hide_all_routes ()
1090 {
1091         set_all_strips_visibility (false);
1092 }
1093
1094 void
1095 Mixer_UI::show_all_routes ()
1096 {
1097         set_all_strips_visibility (true);
1098 }
1099
1100 void
1101 Mixer_UI::show_all_audiobus ()
1102 {
1103         set_all_audio_midi_visibility (2, true);
1104 }
1105 void
1106 Mixer_UI::hide_all_audiobus ()
1107 {
1108         set_all_audio_midi_visibility (2, false);
1109 }
1110
1111 void
1112 Mixer_UI::show_all_audiotracks()
1113 {
1114         set_all_audio_midi_visibility (1, true);
1115 }
1116 void
1117 Mixer_UI::hide_all_audiotracks ()
1118 {
1119         set_all_audio_midi_visibility (1, false);
1120 }
1121
1122 void
1123 Mixer_UI::show_all_miditracks()
1124 {
1125         set_all_audio_midi_visibility (3, true);
1126 }
1127 void
1128 Mixer_UI::hide_all_miditracks ()
1129 {
1130         set_all_audio_midi_visibility (3, false);
1131 }
1132
1133
1134 void
1135 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1136 {
1137         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1138         sync_presentation_info_from_treeview ();
1139 }
1140
1141 void
1142 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1143 {
1144         /* this happens as the second step of a DnD within the treeview as well
1145            as when a row/route is actually deleted.
1146
1147            if it was a deletion then we have to force a redisplay because
1148            order keys may not have changed.
1149         */
1150
1151         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1152         sync_presentation_info_from_treeview ();
1153
1154         if (_route_deletion_in_progress) {
1155                 redisplay_track_list ();
1156         }
1157 }
1158
1159 void
1160 Mixer_UI::redisplay_track_list ()
1161 {
1162         TreeModel::Children rows = track_model->children();
1163         TreeModel::Children::iterator i;
1164         uint32_t n_masters = 0;
1165
1166         if (no_track_list_redisplay) {
1167                 return;
1168         }
1169
1170         container_clear (vca_packer);
1171
1172         for (i = rows.begin(); i != rows.end(); ++i) {
1173
1174                 VCAMasterStrip* vms = (*i)[track_columns.vca];
1175
1176                 if (vms) {
1177                         vca_packer.pack_start (*vms, false, false);
1178                         vms->show ();
1179                         n_masters++;
1180                         continue;
1181                 }
1182
1183                 MixerStrip* strip = (*i)[track_columns.strip];
1184
1185                 if (!strip) {
1186                         /* we're in the middle of changing a row, don't worry */
1187                         continue;
1188                 }
1189
1190                 bool const visible = (*i)[track_columns.visible];
1191
1192                 if (visible) {
1193                         strip->set_gui_property ("visible", true);
1194
1195                         if (strip->packed()) {
1196
1197                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1198                                         out_packer.reorder_child (*strip, -1);
1199
1200                                 } else {
1201                                         strip_packer.reorder_child (*strip, -1); /* put at end */
1202                                 }
1203
1204                         } else {
1205
1206                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1207                                         out_packer.pack_start (*strip, false, false);
1208                                 } else {
1209                                         strip_packer.pack_start (*strip, false, false);
1210                                 }
1211                                 strip->set_packed (true);
1212                         }
1213
1214                 } else {
1215
1216                         strip->set_gui_property ("visible", false);
1217
1218                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1219                                 /* do nothing, these cannot be hidden */
1220                         } else {
1221                                 if (strip->packed()) {
1222                                         strip_packer.remove (*strip);
1223                                         strip->set_packed (false);
1224                                 }
1225                         }
1226                 }
1227         }
1228
1229         /* update visibility of VCA assign buttons */
1230
1231         if (n_masters == 0) {
1232                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::remove_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1233                 vca_scroller.hide ();
1234         } else {
1235                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::add_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1236                 vca_scroller.show ();
1237         }
1238
1239         _group_tabs->set_dirty ();
1240 }
1241
1242 void
1243 Mixer_UI::strip_width_changed ()
1244 {
1245         _group_tabs->set_dirty ();
1246
1247 #ifdef __APPLE__
1248         TreeModel::Children rows = track_model->children();
1249         TreeModel::Children::iterator i;
1250         long order;
1251
1252         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1253                 MixerStrip* strip = (*i)[track_columns.strip];
1254
1255                 if (strip == 0) {
1256                         continue;
1257                 }
1258
1259                 bool visible = (*i)[track_columns.visible];
1260
1261                 if (visible) {
1262                         strip->queue_draw();
1263                 }
1264         }
1265 #endif
1266
1267 }
1268
1269 struct PresentationInfoRouteSorter
1270 {
1271         bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
1272                 return a->presentation_info().global_order () < b->presentation_info().global_order ();
1273         }
1274 };
1275
1276 void
1277 Mixer_UI::initial_track_display ()
1278 {
1279         boost::shared_ptr<RouteList> routes = _session->get_routes();
1280         RouteList copy (*routes);
1281         PresentationInfoRouteSorter sorter;
1282
1283         copy.sort (sorter);
1284
1285         {
1286                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1287                 Unwinder<bool> uw2 (ignore_reorder, true);
1288
1289                 track_model->clear ();
1290                 VCAList vcas = _session->vca_manager().vcas();
1291                 add_masters (vcas);
1292                 add_strips (copy);
1293         }
1294
1295         redisplay_track_list ();
1296 }
1297
1298 void
1299 Mixer_UI::show_track_list_menu ()
1300 {
1301         if (track_menu == 0) {
1302                 build_track_menu ();
1303         }
1304
1305         track_menu->popup (1, gtk_get_current_event_time());
1306 }
1307
1308 bool
1309 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1310 {
1311         if (Keyboard::is_context_menu_event (ev)) {
1312                 show_track_list_menu ();
1313                 return true;
1314         }
1315
1316         return false;
1317 }
1318
1319 void
1320 Mixer_UI::build_track_menu ()
1321 {
1322         using namespace Menu_Helpers;
1323         using namespace Gtk;
1324
1325         track_menu = new Menu;
1326         track_menu->set_name ("ArdourContextMenu");
1327         MenuList& items = track_menu->items();
1328
1329         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1330         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1331         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1332         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1333         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1334         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1335         items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
1336         items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
1337
1338 }
1339
1340 void
1341 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1342 {
1343         if (!what_changed.contains (ARDOUR::Properties::name)) {
1344                 return;
1345         }
1346
1347         ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1348
1349         TreeModel::Children rows = track_model->children();
1350         TreeModel::Children::iterator i;
1351
1352         for (i = rows.begin(); i != rows.end(); ++i) {
1353                 if ((*i)[track_columns.strip] == mx) {
1354                         (*i)[track_columns.text] = mx->route()->name();
1355                         return;
1356                 }
1357         }
1358
1359         error << _("track display list item for renamed strip not found!") << endmsg;
1360 }
1361
1362 bool
1363 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1364 {
1365         TreeModel::Path path;
1366         TreeViewColumn* column;
1367         int cellx;
1368         int celly;
1369
1370         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1371                 _group_tabs->get_menu(0)->popup (1, ev->time);
1372                 return true;
1373         }
1374
1375         TreeIter iter = group_model->get_iter (path);
1376         if (!iter) {
1377                 _group_tabs->get_menu(0)->popup (1, ev->time);
1378                 return true;
1379         }
1380
1381         RouteGroup* group = (*iter)[group_columns.group];
1382
1383         if (Keyboard::is_context_menu_event (ev)) {
1384                 _group_tabs->get_menu(group)->popup (1, ev->time);
1385                 return true;
1386         }
1387
1388         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1389         case 0:
1390                 if (Keyboard::is_edit_event (ev)) {
1391                         if (group) {
1392                                 // edit_route_group (group);
1393 #ifdef __APPLE__
1394                                 group_display.queue_draw();
1395 #endif
1396                                 return true;
1397                         }
1398                 }
1399                 break;
1400
1401         case 1:
1402         {
1403                 bool visible = (*iter)[group_columns.visible];
1404                 (*iter)[group_columns.visible] = !visible;
1405 #ifdef __APPLE__
1406                 group_display.queue_draw();
1407 #endif
1408                 return true;
1409         }
1410
1411         default:
1412                 break;
1413         }
1414
1415         return false;
1416  }
1417
1418 void
1419 Mixer_UI::activate_all_route_groups ()
1420 {
1421         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1422 }
1423
1424 void
1425 Mixer_UI::disable_all_route_groups ()
1426 {
1427         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1428 }
1429
1430 void
1431 Mixer_UI::route_groups_changed ()
1432 {
1433         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1434
1435         _in_group_rebuild_or_clear = true;
1436
1437         /* just rebuild the while thing */
1438
1439         group_model->clear ();
1440
1441 #if 0
1442         /* this is currently not used,
1443          * Mixer_UI::group_display_button_press() has a case for it,
1444          * and a commented edit_route_group() but that's n/a since 2011.
1445          *
1446          * This code is left as reminder that
1447          * row[group_columns.group] = 0 has special meaning.
1448          */
1449         {
1450                 TreeModel::Row row;
1451                 row = *(group_model->append());
1452                 row[group_columns.visible] = true;
1453                 row[group_columns.text] = (_("-all-"));
1454                 row[group_columns.group] = 0;
1455         }
1456 #endif
1457
1458         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1459
1460         _group_tabs->set_dirty ();
1461         _in_group_rebuild_or_clear = false;
1462 }
1463
1464 void
1465 Mixer_UI::new_route_group ()
1466 {
1467         RouteList rl;
1468
1469         _group_tabs->run_new_group_dialog (rl);
1470 }
1471
1472 void
1473 Mixer_UI::remove_selected_route_group ()
1474 {
1475         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1476         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1477
1478         if (rows.empty()) {
1479                 return;
1480         }
1481
1482         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1483         TreeIter iter;
1484
1485         /* selection mode is single, so rows.begin() is it */
1486
1487         if ((iter = group_model->get_iter (*i))) {
1488
1489                 RouteGroup* rg = (*iter)[group_columns.group];
1490
1491                 if (rg) {
1492                         _session->remove_route_group (*rg);
1493                 }
1494         }
1495 }
1496
1497 void
1498 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1499 {
1500         if (in_group_row_change) {
1501                 return;
1502         }
1503
1504         /* force an update of any mixer strips that are using this group,
1505            otherwise mix group names don't change in mixer strips
1506         */
1507
1508         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1509                 if ((*i)->route_group() == group) {
1510                         (*i)->route_group_changed();
1511                 }
1512         }
1513
1514         TreeModel::iterator i;
1515         TreeModel::Children rows = group_model->children();
1516         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1517
1518         in_group_row_change = true;
1519
1520         for (i = rows.begin(); i != rows.end(); ++i) {
1521                 if ((*i)[group_columns.group] == group) {
1522                         (*i)[group_columns.visible] = !group->is_hidden ();
1523                         (*i)[group_columns.text] = group->name ();
1524                         break;
1525                 }
1526         }
1527
1528         in_group_row_change = false;
1529
1530         if (change.contains (Properties::name)) {
1531                 _group_tabs->set_dirty ();
1532         }
1533
1534         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1535                 if ((*j)->route_group() == group) {
1536                         if (group->is_hidden ()) {
1537                                 hide_strip (*j);
1538                         } else {
1539                                 show_strip (*j);
1540                         }
1541                 }
1542         }
1543 }
1544
1545 void
1546 Mixer_UI::show_mixer_list (bool yn)
1547 {
1548         if (yn) {
1549                 list_vpacker.show ();
1550
1551                 //if user wants to show the pane, we should make sure that it is wide enough to be visible
1552                 int width = list_hpane.get_position();
1553                 if (width < 40) {
1554                         list_hpane.set_position(40);
1555                 }
1556         } else {
1557                 list_vpacker.hide ();
1558         }
1559
1560         _show_mixer_list = yn;
1561 }
1562
1563 void
1564 Mixer_UI::show_monitor_section (bool yn)
1565 {
1566         if (!monitor_section()) {
1567                 return;
1568         }
1569         if (monitor_section()->tearoff().torn_off()) {
1570                 return;
1571         }
1572
1573         if (yn) {
1574                 monitor_section()->tearoff().show();
1575         } else {
1576                 monitor_section()->tearoff().hide();
1577         }
1578 }
1579
1580 void
1581 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1582 {
1583         RouteGroup* group;
1584         TreeIter iter;
1585
1586         if ((iter = group_model->get_iter (path))) {
1587
1588                 if ((group = (*iter)[group_columns.group]) == 0) {
1589                         return;
1590                 }
1591
1592                 if (new_text != group->name()) {
1593                         group->set_name (new_text);
1594                 }
1595         }
1596 }
1597
1598 void
1599 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1600 {
1601         RouteGroup* group;
1602
1603         if (in_group_row_change) {
1604                 return;
1605         }
1606
1607         if ((group = (*iter)[group_columns.group]) == 0) {
1608                 return;
1609         }
1610
1611         std::string name = (*iter)[group_columns.text];
1612
1613         if (name != group->name()) {
1614                 group->set_name (name);
1615         }
1616
1617         bool hidden = !(*iter)[group_columns.visible];
1618
1619         if (hidden != group->is_hidden ()) {
1620                 group->set_hidden (hidden, this);
1621         }
1622 }
1623
1624 /** Called when a group model row is deleted, but also when the model is
1625  *  reordered by a user drag-and-drop; the latter is what we are
1626  *  interested in here.
1627  */
1628 void
1629 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1630 {
1631         if (_in_group_rebuild_or_clear) {
1632                 return;
1633         }
1634
1635         /* Re-write the session's route group list so that the new order is preserved */
1636
1637         list<RouteGroup*> new_list;
1638
1639         Gtk::TreeModel::Children children = group_model->children();
1640         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1641                 RouteGroup* g = (*i)[group_columns.group];
1642                 if (g) {
1643                         new_list.push_back (g);
1644                 }
1645         }
1646
1647         _session->reorder_route_groups (new_list);
1648 }
1649
1650
1651 void
1652 Mixer_UI::add_route_group (RouteGroup* group)
1653 {
1654         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1655         bool focus = false;
1656
1657         in_group_row_change = true;
1658
1659         TreeModel::Row row = *(group_model->append());
1660         row[group_columns.visible] = !group->is_hidden ();
1661         row[group_columns.group] = group;
1662         if (!group->name().empty()) {
1663                 row[group_columns.text] = group->name();
1664         } else {
1665                 row[group_columns.text] = _("unnamed");
1666                 focus = true;
1667         }
1668
1669         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1670
1671         if (focus) {
1672                 TreeViewColumn* col = group_display.get_column (0);
1673                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1674                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1675         }
1676
1677         _group_tabs->set_dirty ();
1678
1679         in_group_row_change = false;
1680 }
1681
1682 bool
1683 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1684 {
1685         using namespace Menu_Helpers;
1686
1687         if (Keyboard::is_context_menu_event (ev)) {
1688                 ARDOUR_UI::instance()->add_route ();
1689                 return true;
1690         }
1691
1692         return false;
1693 }
1694
1695 void
1696 Mixer_UI::scroller_drag_data_received (const Glib::RefPtr<Gdk::DragContext>& context, int x, int y, const Gtk::SelectionData& data, guint info, guint time)
1697 {
1698         printf ("Mixer_UI::scroller_drag_data_received\n");
1699         if (data.get_target() != "PluginFavoritePtr") {
1700                 context->drag_finish (false, false, time);
1701                 return;
1702         }
1703
1704         const void * d = data.get_data();
1705         const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>* tv = reinterpret_cast<const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>*>(d);
1706
1707         PluginPresetList nfos;
1708         TreeView* source;
1709         tv->get_object_drag_data (nfos, &source);
1710
1711         Route::ProcessorList pl;
1712         bool ok = false;
1713
1714         for (list<PluginPresetPtr>::const_iterator i = nfos.begin(); i != nfos.end(); ++i) {
1715                 PluginPresetPtr ppp = (*i);
1716                 PluginInfoPtr pip = ppp->_pip;
1717                 if (!pip->is_instrument ()) {
1718                         continue;
1719                 }
1720                 ARDOUR_UI::instance()->session_add_midi_track (NULL, 1, _("MIDI"), Config->get_strict_io (), pip, ppp->_preset.valid ? &ppp->_preset : 0);
1721                 ok = true;
1722         }
1723
1724         context->drag_finish (ok, false, time);
1725 }
1726
1727 void
1728 Mixer_UI::set_strip_width (Width w, bool save)
1729 {
1730         _strip_width = w;
1731
1732         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1733                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1734         }
1735 }
1736
1737
1738 struct PluginStateSorter {
1739 public:
1740         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
1741                 std::list<std::string>::const_iterator aiter = std::find(_user.begin(), _user.end(), (*a).unique_id);
1742                 std::list<std::string>::const_iterator biter = std::find(_user.begin(), _user.end(), (*b).unique_id);
1743                 if (aiter != _user.end() && biter != _user.end()) {
1744                         return std::distance (_user.begin(), aiter)  < std::distance (_user.begin(), biter);
1745                 }
1746                 if (aiter != _user.end()) {
1747                         return true;
1748                 }
1749                 if (biter != _user.end()) {
1750                         return false;
1751                 }
1752                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
1753         }
1754
1755         PluginStateSorter(std::list<std::string> user) : _user (user)  {}
1756 private:
1757         std::list<std::string> _user;
1758 };
1759
1760 int
1761 Mixer_UI::set_state (const XMLNode& node, int version)
1762 {
1763         XMLProperty const * prop;
1764
1765         Tabbable::set_state (node, version);
1766
1767         if ((prop = node.property ("narrow-strips"))) {
1768                 if (string_is_affirmative (prop->value())) {
1769                         set_strip_width (Narrow);
1770                 } else {
1771                         set_strip_width (Wide);
1772                 }
1773         }
1774
1775         if ((prop = node.property ("show-mixer"))) {
1776                 if (string_is_affirmative (prop->value())) {
1777                        _visible = true;
1778                 }
1779         }
1780
1781         if ((prop = node.property ("maximised"))) {
1782                 bool yn = string_is_affirmative (prop->value());
1783                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1784                 assert (act);
1785                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1786                 bool fs = tact && tact->get_active();
1787                 if (yn ^ fs) {
1788                         ActionManager::do_action ("Common", "ToggleMaximalMixer");
1789                 }
1790         }
1791
1792         if ((prop = node.property ("show-mixer-list"))) {
1793                 bool yn = string_is_affirmative (prop->value());
1794                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMixerList"));
1795                 assert (act);
1796                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1797
1798                 /* do it twice to force the change */
1799                 tact->set_active (!yn);
1800                 tact->set_active (yn);
1801         }
1802
1803
1804         XMLNode* plugin_order;
1805         if ((plugin_order = find_named_node (node, "PluginOrder")) != 0) {
1806                 store_current_favorite_order ();
1807                 std::list<string> order;
1808                 const XMLNodeList& kids = plugin_order->children("PluginInfo");
1809                 XMLNodeConstIterator i;
1810                 for (i = kids.begin(); i != kids.end(); ++i) {
1811                         if ((prop = (*i)->property ("unique-id"))) {
1812                                 std::string unique_id = prop->value();
1813                                 order.push_back (unique_id);
1814                                 if ((prop = (*i)->property ("expanded"))) {
1815                                         favorite_ui_state[unique_id] = string_is_affirmative (prop->value());
1816                                 }
1817                         }
1818                 }
1819                 PluginStateSorter cmp (order);
1820                 favorite_order.sort (cmp);
1821                 sync_treeview_from_favorite_order ();
1822         }
1823         return 0;
1824 }
1825
1826 XMLNode&
1827 Mixer_UI::get_state ()
1828 {
1829         XMLNode* node = new XMLNode (X_("Mixer"));
1830         char buf[128];
1831
1832         node->add_child_nocopy (Tabbable::get_state());
1833
1834         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (rhs_pane1, true));
1835         node->add_property(X_("mixer-rhs-pane1-pos"), string(buf));
1836         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (rhs_pane2, true));
1837         node->add_property(X_("mixer-rhs_pane2-pos"), string(buf));
1838         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (list_hpane, false));
1839         node->add_property(X_("mixer-list-hpane-pos"), string(buf));
1840         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (inner_pane, false));
1841         node->add_property(X_("mixer-inner-pane-pos"), string(buf));
1842
1843         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1844         node->add_property ("show-mixer", _visible ? "yes" : "no");
1845         node->add_property ("show-mixer-list", _show_mixer_list ? "yes" : "no");
1846         node->add_property ("maximised", _maximised ? "yes" : "no");
1847
1848         store_current_favorite_order ();
1849         XMLNode* plugin_order = new XMLNode ("PluginOrder");
1850         int cnt = 0;
1851         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i, ++cnt) {
1852                 XMLNode* p = new XMLNode ("PluginInfo");
1853                 p->add_property ("sort", cnt);
1854                 p->add_property ("unique-id", (*i)->unique_id);
1855                 if (favorite_ui_state.find ((*i)->unique_id) != favorite_ui_state.end ()) {
1856                         p->add_property ("expanded", favorite_ui_state[(*i)->unique_id]);
1857                 }
1858                 plugin_order->add_child_nocopy (*p);
1859         }
1860         node->add_child_nocopy (*plugin_order);
1861
1862         return *node;
1863 }
1864
1865 void
1866 Mixer_UI::pane_allocation_handler (Allocation& allocation, Gtk::Paned* which)
1867 {
1868         float pos;
1869         XMLProperty* prop = 0;
1870         XMLNode* geometry = ARDOUR_UI::instance()->mixer_settings();
1871         int height = default_height;
1872         static bool done[4] = { false, false, false, false };
1873
1874         /* Gtk::Paned behaves very oddly and rather undesirably. Setting the
1875          * position is a crapshoot if you time it incorrectly with the overall
1876          * sizing of the Paned. For example, if you might retrieve the size with
1877          * ::get_position() and then later call ::set_position() on a Paned at
1878          * a time when its allocation is different than it was when you retrieved
1879          * the position. The position will be interpreted as the size of the
1880          * first (top or left) child widget. If packing/size allocation later
1881          * resizes the Paned to a (final) smaller size, the position will be
1882          * used in ways that mean that the Paned ends up NOT in the same state
1883          * that it was in when you originally saved the position.
1884          *
1885          * Concrete example: Paned is 800 pixels wide, position is 400
1886          * (halfway).  Save position as 400. During program restart, set
1887          * position to 400, before Paned has been allocated any space. Paned
1888          * ends up initially sized to 1200 pixels.  Position is now 1/3 of the
1889          * way across/down.  Subsequent resizes will leave the position 1/3 of
1890          * the way across, rather than leaving it as a fixed pixel
1891          * position. Eventually, the Paned ends up 800 pixels wide/high again,
1892          * but the position is now 267, not 400.
1893          *
1894          * So ...
1895          *
1896          * We deal with this by using two strategies:
1897          *
1898          * 1) only set the position if the allocated size of the Paned is at
1899          * least as big as it needs to be for the position to make sense.
1900          *
1901          * 2) in recent versions of Ardour, save the position as a fraction,
1902          * and restore it using that fraction.
1903          *
1904          * So, we will only call ::set_position() AFTER the Paned is of a
1905          * sensible size, and then in addition, we will set the position in a
1906          * way that will be maintained as/when/if the Paned is resized.
1907          *
1908          * Once we've called ::set_position() on a Paned, we don't do it
1909          * again.
1910          */
1911
1912         if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
1913
1914                 if (done[0]) {
1915                         return;
1916                 }
1917
1918                 if (!geometry || (prop = geometry->property("mixer-rhs-pane1-pos")) == 0) {
1919                         pos = height / 3;
1920                 } else {
1921                         pos = atof (prop->value());
1922                 }
1923
1924                 if (pos > 1.0f) {
1925                         /* older versions of Ardour stored absolute position */
1926                         if ((done[0] = (allocation.get_height() > pos))) {
1927                                 rhs_pane1.set_position (pos);
1928                         }
1929                 } else {
1930                         if ((done[0] = (allocation.get_height() > 1.0/pos))) {
1931                                 paned_set_position_as_fraction (rhs_pane1, pos, true);
1932                         }
1933                 }
1934         }
1935
1936         if (which == static_cast<Gtk::Paned*> (&rhs_pane2)) {
1937
1938                 if (done[1]) {
1939                         return;
1940                 }
1941
1942                 if (!geometry || (prop = geometry->property("mixer-rhs-pane2-pos")) == 0) {
1943                         pos = 2 * height / 3;
1944                 } else {
1945                         pos = atof (prop->value());
1946                 }
1947
1948                 if (pos > 1.0f) {
1949                         /* older versions of Ardour stored absolute position */
1950                         if ((done[1] = (allocation.get_height() > pos))) {
1951                                 rhs_pane2.set_position (pos);
1952                         }
1953                 } else {
1954                         if ((done[1] = (allocation.get_height() > 1.0/pos))) {
1955                                 paned_set_position_as_fraction (rhs_pane2, pos, true);
1956                         }
1957                 }
1958         }
1959
1960         if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
1961
1962                 if (done[2]) {
1963                         return;
1964                 }
1965
1966                 if (!geometry || (prop = geometry->property("mixer-list-hpane-pos")) == 0) {
1967                         pos = std::max ((float)100, rintf ((float) 125 * UIConfiguration::instance().get_ui_scale()));
1968                 } else {
1969                         pos = max (0.1, atof (prop->value ()));
1970                 }
1971
1972                 if (pos > 1.0f) {
1973                         if ((done[2] = (allocation.get_width() > pos))) {
1974                                 list_hpane.set_position (pos);
1975                         }
1976                 } else {
1977                         if ((done[2] = (allocation.get_width() > 1.0/pos))) {
1978                                 paned_set_position_as_fraction (list_hpane, pos, false);
1979                         }
1980                 }
1981         }
1982
1983         if (which == static_cast<Gtk::Paned*> (&inner_pane)) {
1984
1985                 if (done[3]) {
1986                         return;
1987                 }
1988
1989                 if (!geometry || (prop = geometry->property("mixer-inner-pane-pos")) == 0) {
1990                         pos = std::max ((float)100, rintf ((float) 125 * UIConfiguration::instance().get_ui_scale()));
1991                 } else {
1992                         pos = max (0.1, atof (prop->value ()));
1993                 }
1994
1995                 if (pos > 1.0f) {
1996                         /* older versions of Ardour stored absolute position */
1997                         if ((done[3] = (allocation.get_width() > pos))) {
1998                                 inner_pane.set_position (pos);
1999                         }
2000                 } else {
2001                         if ((done[3] = (allocation.get_width() > 1.0/pos))) {
2002                                 paned_set_position_as_fraction (inner_pane, pos, false);
2003                         }
2004                 }
2005         }
2006 }
2007
2008 void
2009 Mixer_UI::scroll_left ()
2010 {
2011         if (!scroller.get_hscrollbar()) return;
2012         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2013         /* stupid GTK: can't rely on clamping across versions */
2014         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
2015 }
2016
2017 void
2018 Mixer_UI::scroll_right ()
2019 {
2020         if (!scroller.get_hscrollbar()) return;
2021         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2022         /* stupid GTK: can't rely on clamping across versions */
2023         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
2024 }
2025
2026 bool
2027 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
2028 {
2029         switch (ev->direction) {
2030         case GDK_SCROLL_LEFT:
2031                 scroll_left ();
2032                 return true;
2033         case GDK_SCROLL_UP:
2034                 if (ev->state & Keyboard::TertiaryModifier) {
2035                         scroll_left ();
2036                         return true;
2037                 }
2038                 return false;
2039
2040         case GDK_SCROLL_RIGHT:
2041                 scroll_right ();
2042                 return true;
2043
2044         case GDK_SCROLL_DOWN:
2045                 if (ev->state & Keyboard::TertiaryModifier) {
2046                         scroll_right ();
2047                         return true;
2048                 }
2049                 return false;
2050         }
2051
2052         return false;
2053 }
2054
2055
2056 void
2057 Mixer_UI::parameter_changed (string const & p)
2058 {
2059         if (p == "show-group-tabs") {
2060                 bool const s = _session->config.get_show_group_tabs ();
2061                 if (s) {
2062                         _group_tabs->show ();
2063                 } else {
2064                         _group_tabs->hide ();
2065                 }
2066         } else if (p == "default-narrow_ms") {
2067                 bool const s = UIConfiguration::instance().get_default_narrow_ms ();
2068                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2069                         (*i)->set_width_enum (s ? Narrow : Wide, this);
2070                 }
2071         } else if (p == "use-monitor-bus") {
2072                 if (_session && !_session->monitor_out()) {
2073                         monitor_section_detached ();
2074                 }
2075         }
2076 }
2077
2078 void
2079 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
2080 {
2081         g->set_active (a, this);
2082 }
2083
2084 PluginSelector*
2085 Mixer_UI::plugin_selector()
2086 {
2087 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
2088         if (!_plugin_selector)
2089                 _plugin_selector = new PluginSelector (PluginManager::instance());
2090 #endif
2091
2092         return _plugin_selector;
2093 }
2094
2095 void
2096 Mixer_UI::setup_track_display ()
2097 {
2098         track_model = ListStore::create (track_columns);
2099         track_display.set_model (track_model);
2100         track_display.append_column (_("Strips"), track_columns.text);
2101         track_display.append_column (_("Show"), track_columns.visible);
2102         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
2103         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
2104         track_display.get_column (0)->set_expand(true);
2105         track_display.get_column (1)->set_expand(false);
2106         track_display.get_column (0)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
2107         track_display.set_name (X_("EditGroupList"));
2108         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
2109         track_display.set_reorderable (true);
2110         track_display.set_headers_visible (true);
2111         track_display.set_can_focus(false);
2112
2113         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
2114         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
2115
2116         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
2117         track_list_visible_cell->property_activatable() = true;
2118         track_list_visible_cell->property_radio() = false;
2119         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
2120
2121         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
2122
2123         track_display_scroller.add (track_display);
2124         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
2125
2126         VBox* v = manage (new VBox);
2127         v->show ();
2128         v->pack_start (track_display_scroller, true, true);
2129
2130         Button* b = manage (new Button);
2131         b->show ();
2132         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
2133         w->show ();
2134         b->add (*w);
2135
2136         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
2137
2138         v->pack_start (*b, false, false);
2139
2140         track_display_frame.set_name("BaseFrame");
2141         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
2142         track_display_frame.add (*v);
2143
2144         track_display_scroller.show();
2145         track_display_frame.show();
2146         track_display.show();
2147 }
2148
2149 void
2150 Mixer_UI::new_track_or_bus ()
2151 {
2152         ARDOUR_UI::instance()->add_route ();
2153 }
2154
2155 void
2156 Mixer_UI::update_title ()
2157 {
2158         if (!own_window()) {
2159                 return;
2160         }
2161
2162         if (_session) {
2163                 string n;
2164
2165                 if (_session->snap_name() != _session->name()) {
2166                         n = _session->snap_name ();
2167                 } else {
2168                         n = _session->name ();
2169                 }
2170
2171                 if (_session->dirty ()) {
2172                         n = "*" + n;
2173                 }
2174
2175                 WindowTitle title (n);
2176                 title += S_("Window|Mixer");
2177                 title += Glib::get_application_name ();
2178                 own_window()->set_title (title.get_string());
2179
2180         } else {
2181
2182                 WindowTitle title (S_("Window|Mixer"));
2183                 title += Glib::get_application_name ();
2184                 own_window()->set_title (title.get_string());
2185         }
2186 }
2187
2188 MixerStrip*
2189 Mixer_UI::strip_by_x (int x)
2190 {
2191         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2192                 int x1, x2, y;
2193
2194                 (*i)->translate_coordinates (_content, 0, 0, x1, y);
2195                 x2 = x1 + (*i)->get_width();
2196
2197                 if (x >= x1 && x <= x2) {
2198                         return (*i);
2199                 }
2200         }
2201
2202         return 0;
2203 }
2204
2205 void
2206 Mixer_UI::set_route_targets_for_operation ()
2207 {
2208         _route_targets.clear ();
2209
2210         if (!_selection.empty()) {
2211                 _route_targets = _selection.routes;
2212                 return;
2213         }
2214
2215 //  removed "implicit" selections of strips, after discussion on IRC
2216
2217 }
2218
2219 void
2220 Mixer_UI::monitor_section_going_away ()
2221 {
2222         if (_monitor_section) {
2223                 monitor_section_detached ();
2224                 out_packer.remove (_monitor_section->tearoff());
2225                 _monitor_section->set_session (0);
2226                 delete _monitor_section;
2227                 _monitor_section = 0;
2228         }
2229 }
2230
2231 void
2232 Mixer_UI::toggle_midi_input_active (bool flip_others)
2233 {
2234         boost::shared_ptr<RouteList> rl (new RouteList);
2235         bool onoff = false;
2236
2237         set_route_targets_for_operation ();
2238
2239         for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
2240                 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
2241
2242                 if (mt) {
2243                         rl->push_back ((*r)->route());
2244                         onoff = !mt->input_active();
2245                 }
2246         }
2247
2248         _session->set_exclusive_input_active (rl, onoff, flip_others);
2249 }
2250
2251 void
2252 Mixer_UI::maximise_mixer_space ()
2253 {
2254         if (!own_window()) {
2255                 return;
2256         }
2257
2258         if (_maximised) {
2259                 return;
2260         }
2261
2262         _window->fullscreen ();
2263         _maximised = true;
2264 }
2265
2266 void
2267 Mixer_UI::restore_mixer_space ()
2268 {
2269         if (!own_window()) {
2270                 return;
2271         }
2272
2273         if (!_maximised) {
2274                 return;
2275         }
2276
2277         own_window()->unfullscreen();
2278         _maximised = false;
2279 }
2280
2281 void
2282 Mixer_UI::monitor_section_attached ()
2283 {
2284         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2285         Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
2286         act->set_sensitive (true);
2287         tact->set_active ();
2288 }
2289
2290 void
2291 Mixer_UI::monitor_section_detached ()
2292 {
2293         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2294         act->set_sensitive (false);
2295 }
2296
2297 void
2298 Mixer_UI::store_current_favorite_order ()
2299 {
2300         typedef Gtk::TreeModel::Children type_children;
2301         type_children children = favorite_plugins_model->children();
2302         favorite_order.clear();
2303         for(type_children::iterator iter = children.begin(); iter != children.end(); ++iter)
2304         {
2305                 Gtk::TreeModel::Row row = *iter;
2306                 ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2307                 favorite_order.push_back (ppp->_pip);
2308                 std::string name = row[favorite_plugins_columns.name];
2309                 favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2310         }
2311 }
2312
2313 void
2314 Mixer_UI::save_favorite_ui_state (const TreeModel::iterator& iter, const TreeModel::Path& path)
2315 {
2316         Gtk::TreeModel::Row row = *iter;
2317         ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2318         assert (ppp);
2319         favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2320 }
2321
2322 void
2323 Mixer_UI::refiller (PluginInfoList& result, const PluginInfoList& plugs)
2324 {
2325         PluginManager& manager (PluginManager::instance());
2326         for (PluginInfoList::const_iterator i = plugs.begin(); i != plugs.end(); ++i) {
2327                 if (manager.get_status (*i) != PluginManager::Favorite) {
2328                         continue;
2329                 }
2330                 result.push_back (*i);
2331         }
2332 }
2333
2334 struct PluginCustomSorter {
2335 public:
2336         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
2337                 PluginInfoList::const_iterator aiter = _user.begin();
2338                 PluginInfoList::const_iterator biter = _user.begin();
2339                 while (aiter != _user.end()) { if ((*aiter)->unique_id == a->unique_id) { break; } ++aiter; }
2340                 while (biter != _user.end()) { if ((*biter)->unique_id == b->unique_id) { break; } ++biter; }
2341
2342                 if (aiter != _user.end() && biter != _user.end()) {
2343                         return std::distance (_user.begin(), aiter) < std::distance (_user.begin(), biter);
2344                 }
2345                 if (aiter != _user.end()) {
2346                         return true;
2347                 }
2348                 if (biter != _user.end()) {
2349                         return false;
2350                 }
2351                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
2352         }
2353         PluginCustomSorter(PluginInfoList user) : _user (user)  {}
2354 private:
2355         PluginInfoList _user;
2356 };
2357
2358 void
2359 Mixer_UI::refill_favorite_plugins ()
2360 {
2361         PluginInfoList plugs;
2362         PluginManager& mgr (PluginManager::instance());
2363
2364 #ifdef LV2_SUPPORT
2365         refiller (plugs, mgr.lv2_plugin_info ());
2366 #endif
2367 #ifdef WINDOWS_VST_SUPPORT
2368         refiller (plugs, mgr.windows_vst_plugin_info ());
2369 #endif
2370 #ifdef LXVST_SUPPORT
2371         refiller (plugs, mgr.lxvst_plugin_info ());
2372 #endif
2373 #ifdef AUDIOUNIT_SUPPORT
2374         refiller (plugs, mgr.au_plugin_info ());
2375 #endif
2376         refiller (plugs, mgr.ladspa_plugin_info ());
2377         refiller (plugs, mgr.lua_plugin_info ());
2378
2379         store_current_favorite_order ();
2380
2381         PluginCustomSorter cmp (favorite_order);
2382         plugs.sort (cmp);
2383
2384         favorite_order = plugs;
2385
2386         sync_treeview_from_favorite_order ();
2387 }
2388
2389 void
2390 Mixer_UI::sync_treeview_favorite_ui_state (const TreeModel::Path& path, const TreeModel::iterator&)
2391 {
2392         TreeIter iter;
2393         if (!(iter = favorite_plugins_model->get_iter (path))) {
2394                 return;
2395         }
2396         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2397         if (!ppp) {
2398                 return;
2399         }
2400         PluginInfoPtr pip = ppp->_pip;
2401         if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2402                 if (favorite_ui_state[pip->unique_id]) {
2403                         favorite_plugins_display.expand_row (path, true);
2404                 }
2405         }
2406 }
2407
2408 void
2409 Mixer_UI::sync_treeview_from_favorite_order ()
2410 {
2411         favorite_plugins_model->clear ();
2412         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i) {
2413                 PluginInfoPtr pip = (*i);
2414
2415                 TreeModel::Row newrow = *(favorite_plugins_model->append());
2416                 newrow[favorite_plugins_columns.name] = (*i)->name;
2417                 newrow[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip));
2418                 if (!_session) {
2419                         continue;
2420                 }
2421
2422                 vector<ARDOUR::Plugin::PresetRecord> presets = (*i)->get_presets (true);
2423                 for (vector<ARDOUR::Plugin::PresetRecord>::const_iterator j = presets.begin(); j != presets.end(); ++j) {
2424                         Gtk::TreeModel::Row child_row = *(favorite_plugins_model->append (newrow.children()));
2425                         child_row[favorite_plugins_columns.name] = (*j).label;
2426                         child_row[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip, &(*j)));
2427                 }
2428                 if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2429                         if (favorite_ui_state[pip->unique_id]) {
2430                                 favorite_plugins_display.expand_row (favorite_plugins_model->get_path(newrow), true);
2431                         }
2432                 }
2433         }
2434 }
2435
2436 void
2437 Mixer_UI::popup_note_context_menu (GdkEventButton *ev)
2438 {
2439         using namespace Gtk::Menu_Helpers;
2440
2441         Gtk::Menu* m = manage (new Menu);
2442         MenuList& items = m->items ();
2443
2444         if (_selection.routes.empty()) {
2445                 items.push_back (MenuElem (_("No Track/Bus is selected.")));
2446         } else {
2447                 items.push_back (MenuElem (_("Add at the top"),
2448                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddTop)));
2449                 items.push_back (MenuElem (_("Add Pre-Fader"),
2450                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPreFader)));
2451                 items.push_back (MenuElem (_("Add Post-Fader"),
2452                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPostFader)));
2453                 items.push_back (MenuElem (_("Add at the end"),
2454                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddBottom)));
2455         }
2456
2457         items.push_back (SeparatorElem());
2458
2459         items.push_back (MenuElem (_("Remove from favorites"), sigc::mem_fun (*this, &Mixer_UI::remove_selected_from_favorites)));
2460
2461         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2462         if (ppp && ppp->_preset.valid && ppp->_preset.user) {
2463                 // we cannot currently delete AU presets
2464                 if (!ppp->_pip || ppp->_pip->type != AudioUnit) {
2465                         items.push_back (MenuElem (_("Delete Preset"), sigc::mem_fun (*this, &Mixer_UI::delete_selected_preset)));
2466                 }
2467         }
2468
2469         m->popup (ev->button, ev->time);
2470 }
2471
2472 bool
2473 Mixer_UI::plugin_row_button_press (GdkEventButton *ev)
2474 {
2475         if ((ev->type == GDK_BUTTON_PRESS) && (ev->button == 3) ) {
2476                 TreeModel::Path path;
2477                 TreeViewColumn* column;
2478                 int cellx, celly;
2479                 if (favorite_plugins_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
2480                         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2481                         if (selection) {
2482                                 selection->unselect_all();
2483                                 selection->select(path);
2484                         }
2485                 }
2486                 ARDOUR::PluginPresetPtr ppp = selected_plugin();
2487                 if (ppp) {
2488                         popup_note_context_menu (ev);
2489                 }
2490         }
2491         return false;
2492 }
2493
2494
2495 PluginPresetPtr
2496 Mixer_UI::selected_plugin ()
2497 {
2498         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2499         if (!selection) {
2500                 return PluginPresetPtr();
2501         }
2502         Gtk::TreeModel::iterator iter = selection->get_selected();
2503         if (!iter) {
2504                 return PluginPresetPtr();
2505         }
2506         return (*iter)[favorite_plugins_columns.plugin];
2507 }
2508
2509 void
2510 Mixer_UI::add_selected_processor (ProcessorPosition pos)
2511 {
2512         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2513         if (ppp) {
2514                 add_favorite_processor (ppp, pos);
2515         }
2516 }
2517
2518 void
2519 Mixer_UI::delete_selected_preset ()
2520 {
2521         if (!_session) {
2522                 return;
2523         }
2524         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2525         if (!ppp || !ppp->_preset.valid || !ppp->_preset.user) {
2526                 return;
2527         }
2528         PluginPtr plugin = ppp->_pip->load (*_session);
2529         plugin->get_presets();
2530         plugin->remove_preset (ppp->_preset.label);
2531 }
2532
2533 void
2534 Mixer_UI::remove_selected_from_favorites ()
2535 {
2536         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2537         if (!ppp) {
2538                 return;
2539         }
2540         PluginManager::PluginStatusType status = PluginManager::Normal;
2541         PluginManager& manager (PluginManager::instance());
2542
2543         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2544         manager.save_statuses ();
2545 }
2546
2547 void
2548 Mixer_UI::plugin_row_activated (const TreeModel::Path& path, TreeViewColumn* column)
2549 {
2550         TreeIter iter;
2551         if (!(iter = favorite_plugins_model->get_iter (path))) {
2552                 return;
2553         }
2554         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2555         add_favorite_processor (ppp, AddPreFader); // TODO: preference?!
2556 }
2557
2558 void
2559 Mixer_UI::add_favorite_processor (ARDOUR::PluginPresetPtr ppp, ProcessorPosition pos)
2560 {
2561         if (!_session || _selection.routes.empty()) {
2562                 return;
2563         }
2564
2565         PluginInfoPtr pip = ppp->_pip;
2566         for (RouteUISelection::iterator i = _selection.routes.begin(); i != _selection.routes.end(); ++i) {
2567                 boost::shared_ptr<ARDOUR::Route> rt = (*i)->route();
2568                 if (!rt) { continue; }
2569
2570                 PluginPtr p = pip->load (*_session);
2571                 if (!p) { continue; }
2572
2573                 if (ppp->_preset.valid) {
2574                         p->load_preset (ppp->_preset);
2575                 }
2576
2577                 Route::ProcessorStreams err;
2578                 boost::shared_ptr<Processor> processor (new PluginInsert (*_session, p));
2579
2580                 switch (pos) {
2581                         case AddTop:
2582                                 rt->add_processor_by_index (processor, 0, &err, Config->get_new_plugins_active ());
2583                                 break;
2584                         case AddPreFader:
2585                                 rt->add_processor (processor, PreFader, &err, Config->get_new_plugins_active ());
2586                                 break;
2587                         case AddPostFader:
2588                                 {
2589                                         int idx = 0;
2590                                         int pos = 0;
2591                                         for (;;++idx) {
2592                                                 boost::shared_ptr<Processor> np = rt->nth_processor (idx);
2593                                                 if (!np) {
2594                                                         break;
2595                                                 }
2596                                                 if (!np->display_to_user()) {
2597                                                         continue;
2598                                                 }
2599                                                 if (boost::dynamic_pointer_cast<Amp> (np) && // Fader, not Trim
2600                                                                 boost::dynamic_pointer_cast<Amp> (np)->gain_control()->parameter().type() == GainAutomation) {
2601                                                         break;
2602                                                 }
2603                                                 ++pos;
2604                                         }
2605                                         rt->add_processor_by_index (processor, ++pos, &err, Config->get_new_plugins_active ());
2606                                 }
2607                                 break;
2608                         case AddBottom:
2609                                 rt->add_processor_by_index (processor, -1, &err, Config->get_new_plugins_active ());
2610                                 break;
2611                 }
2612         }
2613 }
2614
2615 bool
2616 PluginTreeStore::row_drop_possible_vfunc(const Gtk::TreeModel::Path& dest, const Gtk::SelectionData& data) const
2617 {
2618         if (data.get_target() != "GTK_TREE_MODEL_ROW") {
2619                 return false;
2620         }
2621
2622         // only allow to re-order top-level items
2623         TreePath src;
2624         if (TreePath::get_from_selection_data (data, src)) {
2625                 if (src.up() && src.up()) {
2626                         return false;
2627                 }
2628         }
2629
2630         // don't allow to drop as child-rows.
2631         Gtk::TreeModel::Path _dest = dest; // un const
2632         const bool is_child = _dest.up (); // explicit bool for clang
2633         if (!is_child || _dest.empty ()) {
2634                 return true;
2635         }
2636         return false;
2637 }
2638
2639 void
2640 Mixer_UI::plugin_drop (const Glib::RefPtr<Gdk::DragContext>&, const Gtk::SelectionData& data)
2641 {
2642         if (data.get_target() != "PluginPresetPtr") {
2643                 return;
2644         }
2645         if (data.get_length() != sizeof (PluginPresetPtr)) {
2646                 return;
2647         }
2648         const void *d = data.get_data();
2649         const PluginPresetPtr ppp = *(static_cast<const PluginPresetPtr*> (d));
2650
2651         PluginManager::PluginStatusType status = PluginManager::Favorite;
2652         PluginManager& manager (PluginManager::instance());
2653
2654         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2655         manager.save_statuses ();
2656 }
2657
2658 void
2659 Mixer_UI::do_vca_assign (boost::shared_ptr<VCA> vca)
2660 {
2661         /* call protected MixerActor:: method */
2662         vca_assign (vca);
2663 }
2664
2665 void
2666 Mixer_UI::do_vca_unassign (boost::shared_ptr<VCA> vca)
2667 {
2668         /* call protected MixerActor:: method */
2669         vca_unassign (vca);
2670 }