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/midi_track.h"
  46 #include "ardour/plugin_manager.h"
  47 #include "ardour/route_group.h"
  48 #include "ardour/route_sorters.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         Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_order_keys, 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->order_key() == (routes.front()->order_key() + 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_order_keys_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::reset_remote_control_ids ()
 580 {
 581         if (Config->get_remote_model() == UserOrdered || !_session || _session->deletion_in_progress()) {
 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 resets remote control ids after remote model change\n");
 592
 593         TreeModel::Children::iterator ri;
 594         bool rid_change = false;
 595         uint32_t rid = 1;
 596         uint32_t invisible_key = UINT32_MAX;
 597
 598         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 599
 600                 /* skip two special values */
 601
 602                 if (rid == Route::MasterBusRemoteControlID) {
 603                         rid++;
 604                 }
 605
 606                 if (rid == Route::MonitorBusRemoteControlID) {
 607                         rid++;
 608                 }
 609
 610                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 611                 bool visible = (*ri)[track_columns.visible];
 612
 613                 if (!route) {
 614                         continue;
 615                 }
 616
 617                 if (!route->is_master() && !route->is_monitor()) {
 618
 619                         uint32_t new_rid = (visible ? rid : invisible_key--);
 620
 621                         if (new_rid != route->remote_control_id()) {
 622                                 route->set_remote_control_id_explicit (new_rid);
 623                                 rid_change = true;
 624                         }
 625
 626                         if (visible) {
 627                                 rid++;
 628                         }
 629                 }
 630         }
 631
 632         if (rid_change) {
 633                 /* tell the world that we changed the remote control IDs */
 634                 _session->notify_remote_id_change ();
 635         }
 636 }
 637
 638 void
 639 Mixer_UI::sync_order_keys_from_treeview ()
 640 {
 641         if (ignore_reorder || !_session || _session->deletion_in_progress()) {
 642                 return;
 643         }
 644
 645         TreeModel::Children rows = track_model->children();
 646
 647         if (rows.empty()) {
 648                 return;
 649         }
 650
 651         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
 652
 653         TreeModel::Children::iterator ri;
 654         bool changed = false;
 655         bool rid_change = false;
 656         uint32_t order = 0;
 657         uint32_t rid = 1;
 658         uint32_t invisible_key = UINT32_MAX;
 659
 660         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 661                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 662                 bool visible = (*ri)[track_columns.visible];
 663
 664                 if (!route) {
 665                         continue;
 666                 }
 667
 668                 uint32_t old_key = route->order_key ();
 669
 670                 if (order != old_key) {
 671                         route->set_order_key (order);
 672                         changed = true;
 673                 }
 674
 675                 if ((Config->get_remote_model() == MixerOrdered) && !route->is_master() && !route->is_monitor()) {
 676
 677                         uint32_t new_rid = (visible ? rid : invisible_key--);
 678
 679                         if (new_rid != route->remote_control_id()) {
 680                                 route->set_remote_control_id_explicit (new_rid);
 681                                 rid_change = true;
 682                         }
 683
 684                         if (visible) {
 685                                 rid++;
 686                         }
 687
 688                 }
 689
 690                 ++order;
 691         }
 692
 693         if (changed) {
 694                 /* tell everyone that we changed the mixer sort keys */
 695                 _session->sync_order_keys ();
 696         }
 697
 698         if (rid_change) {
 699                 /* tell the world that we changed the remote control IDs */
 700                 _session->notify_remote_id_change ();
 701         }
 702 }
 703
 704 void
 705 Mixer_UI::sync_treeview_from_order_keys ()
 706 {
 707         if (!_session || _session->deletion_in_progress()) {
 708                 return;
 709         }
 710
 711         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from order keys.\n");
 712
 713         /* we could get here after either a change in the Mixer or Editor sort
 714          * order, but either way, the mixer order keys reflect the intended
 715          * order for the GUI, so reorder the treeview model to match it.
 716          */
 717
 718         vector<int> neworder;
 719         TreeModel::Children rows = track_model->children();
 720         uint32_t old_order = 0;
 721         bool changed = false;
 722
 723         if (rows.empty()) {
 724                 return;
 725         }
 726
 727         OrderingKeys sorted;
 728         uint32_t vca_cnt = 0;
 729         uint32_t max_route_order_key = 0;
 730
 731         /* count number of Routes in track_model (there may be some odd reason
 732            why this is not the same as the number in the session, but here we
 733            care about the track model.
 734         */
 735
 736         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri) {
 737                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 738                 if (route) {
 739                         max_route_order_key = max (route->order_key(), max_route_order_key);
 740                 }
 741         }
 742
 743         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 744                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 745                 if (!route) {
 746                         /* VCAs need to sort after all routes. We don't display
 747                          * them in the same place (March 2016), but we don't
 748                          * want them intermixed in the track_model
 749                          */
 750                         sorted.push_back (OrderKeys (old_order, max_route_order_key + ++vca_cnt));
 751                 } else {
 752                         sorted.push_back (OrderKeys (old_order, route->order_key ()));
 753                 }
 754         }
 755
 756         SortByNewDisplayOrder cmp;
 757
 758         sort (sorted.begin(), sorted.end(), cmp);
 759         neworder.assign (sorted.size(), 0);
 760
 761         uint32_t n = 0;
 762
 763         for (OrderingKeys::iterator sr = sorted.begin(); sr != sorted.end(); ++sr, ++n) {
 764
 765                 neworder[n] = sr->old_display_order;
 766
 767                 if (sr->old_display_order != n) {
 768                         changed = true;
 769                 }
 770
 771                 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order from %1 to %2\n",
 772                                                                sr->old_display_order, n));
 773         }
 774
 775         if (changed) {
 776                 Unwinder<bool> uw (ignore_reorder, true);
 777                 track_model->reorder (neworder);
 778         }
 779
 780         redisplay_track_list ();
 781 }
 782
 783 void
 784 Mixer_UI::follow_editor_selection ()
 785 {
 786         if (_following_editor_selection) {
 787                 return;
 788         }
 789
 790         _following_editor_selection = true;
 791         _selection.block_routes_changed (true);
 792
 793         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 794
 795         _selection.clear_routes ();
 796
 797         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 798                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
 799                 if (rtav) {
 800                         MixerStrip* ms = strip_by_route (rtav->route());
 801                         if (ms) {
 802                                 _selection.add (ms);
 803                         }
 804                 }
 805         }
 806
 807         _following_editor_selection = false;
 808         _selection.block_routes_changed (false);
 809 }
 810
 811
 812 MixerStrip*
 813 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 814 {
 815         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 816                 if ((*i)->route() == r) {
 817                         return (*i);
 818                 }
 819         }
 820
 821         return 0;
 822 }
 823
 824 bool
 825 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 826 {
 827         if (ev->button == 1) {
 828                 if (_selection.selected (strip)) {
 829                         /* primary-click: toggle selection state of strip */
 830                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 831                                 _selection.remove (strip);
 832                         } else if (_selection.routes.size() > 1) {
 833                                 /* de-select others */
 834                                 _selection.set (strip);
 835                         }
 836                 } else {
 837                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 838                                 _selection.add (strip);
 839                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 840
 841                                 if (!_selection.selected(strip)) {
 842
 843                                         /* extend selection */
 844
 845                                         vector<MixerStrip*> tmp;
 846                                         bool accumulate = false;
 847                                         bool found_another = false;
 848
 849                                         tmp.push_back (strip);
 850
 851                                         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 852                                                 if ((*i) == strip) {
 853                                                         /* hit clicked strip, start accumulating till we hit the first
 854                                                            selected strip
 855                                                         */
 856                                                         if (accumulate) {
 857                                                                 /* done */
 858                                                                 break;
 859                                                         } else {
 860                                                                 accumulate = true;
 861                                                         }
 862                                                 } else if (_selection.selected (*i)) {
 863                                                         /* hit selected strip. if currently accumulating others,
 864                                                            we're done. if not accumulating others, start doing so.
 865                                                         */
 866                                                         found_another = true;
 867                                                         if (accumulate) {
 868                                                                 /* done */
 869                                                                 break;
 870                                                         } else {
 871                                                                 accumulate = true;
 872                                                         }
 873                                                 } else {
 874                                                         if (accumulate) {
 875                                                                 tmp.push_back (*i);
 876                                                         }
 877                                                 }
 878                                         }
 879
 880                                         if (found_another) {
 881                                                 for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 882                                                         _selection.add (*i);
 883                                                 }
 884                                         } else
 885                                                 _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
 886                                 }
 887
 888                         } else {
 889                                 _selection.set (strip);
 890                         }
 891                 }
 892         }
 893
 894         return true;
 895 }
 896
 897 void
 898 Mixer_UI::set_session (Session* sess)
 899 {
 900         SessionHandlePtr::set_session (sess);
 901
 902         if (_plugin_selector) {
 903                 _plugin_selector->set_session (_session);
 904         }
 905
 906         _group_tabs->set_session (sess);
 907
 908         if (!_session) {
 909                 return;
 910         }
 911
 912         refill_favorite_plugins();
 913
 914         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 915         set_state (*node, 0);
 916
 917         update_title ();
 918
 919         initial_track_display ();
 920
 921         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
 922         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 923         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 924         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 925         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 926         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 927         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 928
 929         _session->vca_manager().VCAAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_masters, this, _1), gui_context());
 930
 931         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 932
 933         route_groups_changed ();
 934
 935         if (_visible) {
 936                 show_window();
 937         }
 938         start_updating ();
 939 }
 940
 941 void
 942 Mixer_UI::session_going_away ()
 943 {
 944         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 945
 946         _in_group_rebuild_or_clear = true;
 947         group_model->clear ();
 948         _in_group_rebuild_or_clear = false;
 949
 950         _selection.clear ();
 951         track_model->clear ();
 952
 953         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 954                 delete (*i);
 955         }
 956
 957         if (_monitor_section) {
 958                 _monitor_section->tearoff().hide_visible ();
 959         }
 960
 961         monitor_section_detached ();
 962
 963         strips.clear ();
 964
 965         stop_updating ();
 966
 967         SessionHandlePtr::session_going_away ();
 968
 969         _session = 0;
 970         update_title ();
 971 }
 972
 973 void
 974 Mixer_UI::track_visibility_changed (std::string const & path)
 975 {
 976         if (_session && _session->deletion_in_progress()) {
 977                 return;
 978         }
 979
 980         TreeIter iter;
 981
 982         if ((iter = track_model->get_iter (path))) {
 983                 MixerStrip* strip = (*iter)[track_columns.strip];
 984                 if (strip) {
 985                         bool visible = (*iter)[track_columns.visible];
 986
 987                         if (strip->set_marked_for_display (!visible)) {
 988                                 update_track_visibility ();
 989                         }
 990                 }
 991         }
 992 }
 993
 994 void
 995 Mixer_UI::update_track_visibility ()
 996 {
 997         TreeModel::Children rows = track_model->children();
 998         TreeModel::Children::iterator i;
 999
1000         {
1001                 Unwinder<bool> uw (no_track_list_redisplay, true);
1002
1003                 for (i = rows.begin(); i != rows.end(); ++i) {
1004                         MixerStrip *strip = (*i)[track_columns.strip];
1005                         if (strip) {
1006                                 (*i)[track_columns.visible] = strip->marked_for_display ();
1007                         }
1008                 }
1009
1010                 /* force route order keys catch up with visibility changes
1011                  */
1012
1013                 sync_order_keys_from_treeview ();
1014         }
1015
1016         redisplay_track_list ();
1017 }
1018
1019 void
1020 Mixer_UI::show_strip (MixerStrip* ms)
1021 {
1022         TreeModel::Children rows = track_model->children();
1023         TreeModel::Children::iterator i;
1024
1025         for (i = rows.begin(); i != rows.end(); ++i) {
1026
1027                 MixerStrip* strip = (*i)[track_columns.strip];
1028                 if (strip == ms) {
1029                         (*i)[track_columns.visible] = true;
1030                         redisplay_track_list ();
1031                         break;
1032                 }
1033         }
1034 }
1035
1036 void
1037 Mixer_UI::hide_strip (MixerStrip* ms)
1038 {
1039         TreeModel::Children rows = track_model->children();
1040         TreeModel::Children::iterator i;
1041
1042         for (i = rows.begin(); i != rows.end(); ++i) {
1043
1044                 MixerStrip* strip = (*i)[track_columns.strip];
1045                 if (strip == ms) {
1046                         (*i)[track_columns.visible] = false;
1047                         redisplay_track_list ();
1048                         break;
1049                 }
1050         }
1051 }
1052
1053 gint
1054 Mixer_UI::start_updating ()
1055 {
1056     fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
1057     return 0;
1058 }
1059
1060 gint
1061 Mixer_UI::stop_updating ()
1062 {
1063     fast_screen_update_connection.disconnect();
1064     return 0;
1065 }
1066
1067 void
1068 Mixer_UI::fast_update_strips ()
1069 {
1070         if (_content.is_mapped () && _session) {
1071                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1072                         (*i)->fast_update ();
1073                 }
1074         }
1075 }
1076
1077 void
1078 Mixer_UI::set_all_strips_visibility (bool yn)
1079 {
1080         TreeModel::Children rows = track_model->children();
1081         TreeModel::Children::iterator i;
1082
1083         {
1084                 Unwinder<bool> uw (no_track_list_redisplay, true);
1085
1086                 for (i = rows.begin(); i != rows.end(); ++i) {
1087
1088                         TreeModel::Row row = (*i);
1089                         MixerStrip* strip = row[track_columns.strip];
1090
1091                         if (!strip) {
1092                                 continue;
1093                         }
1094
1095                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1096                                 continue;
1097                         }
1098
1099                         (*i)[track_columns.visible] = yn;
1100                 }
1101         }
1102
1103         redisplay_track_list ();
1104 }
1105
1106
1107 void
1108 Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
1109 {
1110         TreeModel::Children rows = track_model->children();
1111         TreeModel::Children::iterator i;
1112
1113         {
1114                 Unwinder<bool> uw (no_track_list_redisplay, true);
1115
1116                 for (i = rows.begin(); i != rows.end(); ++i) {
1117                         TreeModel::Row row = (*i);
1118                         MixerStrip* strip = row[track_columns.strip];
1119
1120                         if (!strip) {
1121                                 continue;
1122                         }
1123
1124                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1125                                 continue;
1126                         }
1127
1128                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
1129                         boost::shared_ptr<MidiTrack> mt = strip->midi_track();
1130
1131                         switch (tracks) {
1132                         case 0:
1133                                 (*i)[track_columns.visible] = yn;
1134                                 break;
1135
1136                         case 1:
1137                                 if (at) { /* track */
1138                                         (*i)[track_columns.visible] = yn;
1139                                 }
1140                                 break;
1141
1142                         case 2:
1143                                 if (!at && !mt) { /* bus */
1144                                         (*i)[track_columns.visible] = yn;
1145                                 }
1146                                 break;
1147
1148                         case 3:
1149                                 if (mt) { /* midi-track */
1150                                         (*i)[track_columns.visible] = yn;
1151                                 }
1152                                 break;
1153                         }
1154                 }
1155         }
1156
1157         redisplay_track_list ();
1158 }
1159
1160 void
1161 Mixer_UI::hide_all_routes ()
1162 {
1163         set_all_strips_visibility (false);
1164 }
1165
1166 void
1167 Mixer_UI::show_all_routes ()
1168 {
1169         set_all_strips_visibility (true);
1170 }
1171
1172 void
1173 Mixer_UI::show_all_audiobus ()
1174 {
1175         set_all_audio_midi_visibility (2, true);
1176 }
1177 void
1178 Mixer_UI::hide_all_audiobus ()
1179 {
1180         set_all_audio_midi_visibility (2, false);
1181 }
1182
1183 void
1184 Mixer_UI::show_all_audiotracks()
1185 {
1186         set_all_audio_midi_visibility (1, true);
1187 }
1188 void
1189 Mixer_UI::hide_all_audiotracks ()
1190 {
1191         set_all_audio_midi_visibility (1, false);
1192 }
1193
1194 void
1195 Mixer_UI::show_all_miditracks()
1196 {
1197         set_all_audio_midi_visibility (3, true);
1198 }
1199 void
1200 Mixer_UI::hide_all_miditracks ()
1201 {
1202         set_all_audio_midi_visibility (3, false);
1203 }
1204
1205
1206 void
1207 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1208 {
1209         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1210         sync_order_keys_from_treeview ();
1211 }
1212
1213 void
1214 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1215 {
1216         /* this happens as the second step of a DnD within the treeview as well
1217            as when a row/route is actually deleted.
1218
1219            if it was a deletion then we have to force a redisplay because
1220            order keys may not have changed.
1221         */
1222
1223         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1224         sync_order_keys_from_treeview ();
1225
1226         if (_route_deletion_in_progress) {
1227                 redisplay_track_list ();
1228         }
1229 }
1230
1231 void
1232 Mixer_UI::redisplay_track_list ()
1233 {
1234         TreeModel::Children rows = track_model->children();
1235         TreeModel::Children::iterator i;
1236
1237         if (no_track_list_redisplay) {
1238                 return;
1239         }
1240
1241         container_clear (vca_packer);
1242
1243         for (i = rows.begin(); i != rows.end(); ++i) {
1244
1245                 VCAMasterStrip* vms = (*i)[track_columns.vca];
1246
1247                 if (vms) {
1248                         vca_packer.pack_start (*vms, false, false);
1249                         vms->show ();
1250                         continue;
1251                 }
1252
1253                 MixerStrip* strip = (*i)[track_columns.strip];
1254
1255                 if (!strip) {
1256                         /* we're in the middle of changing a row, don't worry */
1257                         continue;
1258                 }
1259
1260                 bool const visible = (*i)[track_columns.visible];
1261
1262                 if (visible) {
1263                         strip->set_gui_property ("visible", true);
1264
1265                         if (strip->packed()) {
1266
1267                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1268                                         out_packer.reorder_child (*strip, -1);
1269
1270                                 } else {
1271                                         strip_packer.reorder_child (*strip, -1); /* put at end */
1272                                 }
1273
1274                         } else {
1275
1276                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1277                                         out_packer.pack_start (*strip, false, false);
1278                                 } else {
1279                                         strip_packer.pack_start (*strip, false, false);
1280                                 }
1281                                 strip->set_packed (true);
1282                         }
1283
1284                 } else {
1285
1286                         strip->set_gui_property ("visible", false);
1287
1288                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1289                                 /* do nothing, these cannot be hidden */
1290                         } else {
1291                                 if (strip->packed()) {
1292                                         strip_packer.remove (*strip);
1293                                         strip->set_packed (false);
1294                                 }
1295                         }
1296                 }
1297         }
1298
1299         _group_tabs->set_dirty ();
1300 }
1301
1302 void
1303 Mixer_UI::strip_width_changed ()
1304 {
1305         _group_tabs->set_dirty ();
1306
1307 #ifdef __APPLE__
1308         TreeModel::Children rows = track_model->children();
1309         TreeModel::Children::iterator i;
1310         long order;
1311
1312         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1313                 MixerStrip* strip = (*i)[track_columns.strip];
1314
1315                 if (strip == 0) {
1316                         continue;
1317                 }
1318
1319                 bool visible = (*i)[track_columns.visible];
1320
1321                 if (visible) {
1322                         strip->queue_draw();
1323                 }
1324         }
1325 #endif
1326
1327 }
1328
1329 void
1330 Mixer_UI::initial_track_display ()
1331 {
1332         boost::shared_ptr<RouteList> routes = _session->get_routes();
1333         RouteList copy (*routes);
1334         ARDOUR::SignalOrderRouteSorter sorter;
1335
1336         copy.sort (sorter);
1337
1338         {
1339                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1340                 Unwinder<bool> uw2 (ignore_reorder, true);
1341
1342                 track_model->clear ();
1343                 VCAList vcas = _session->vca_manager().vcas();
1344                 add_masters (vcas);
1345                 add_strips (copy);
1346         }
1347
1348         _session->sync_order_keys ();
1349
1350         redisplay_track_list ();
1351 }
1352
1353 void
1354 Mixer_UI::show_track_list_menu ()
1355 {
1356         if (track_menu == 0) {
1357                 build_track_menu ();
1358         }
1359
1360         track_menu->popup (1, gtk_get_current_event_time());
1361 }
1362
1363 bool
1364 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1365 {
1366         if (Keyboard::is_context_menu_event (ev)) {
1367                 show_track_list_menu ();
1368                 return true;
1369         }
1370
1371         return false;
1372 }
1373
1374 void
1375 Mixer_UI::build_track_menu ()
1376 {
1377         using namespace Menu_Helpers;
1378         using namespace Gtk;
1379
1380         track_menu = new Menu;
1381         track_menu->set_name ("ArdourContextMenu");
1382         MenuList& items = track_menu->items();
1383
1384         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1385         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1386         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1387         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1388         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1389         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1390         items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
1391         items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
1392
1393 }
1394
1395 void
1396 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1397 {
1398         if (!what_changed.contains (ARDOUR::Properties::name)) {
1399                 return;
1400         }
1401
1402         ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1403
1404         TreeModel::Children rows = track_model->children();
1405         TreeModel::Children::iterator i;
1406
1407         for (i = rows.begin(); i != rows.end(); ++i) {
1408                 if ((*i)[track_columns.strip] == mx) {
1409                         (*i)[track_columns.text] = mx->route()->name();
1410                         return;
1411                 }
1412         }
1413
1414         error << _("track display list item for renamed strip not found!") << endmsg;
1415 }
1416
1417 bool
1418 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1419 {
1420         TreeModel::Path path;
1421         TreeViewColumn* column;
1422         int cellx;
1423         int celly;
1424
1425         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1426                 _group_tabs->get_menu(0)->popup (1, ev->time);
1427                 return true;
1428         }
1429
1430         TreeIter iter = group_model->get_iter (path);
1431         if (!iter) {
1432                 _group_tabs->get_menu(0)->popup (1, ev->time);
1433                 return true;
1434         }
1435
1436         RouteGroup* group = (*iter)[group_columns.group];
1437
1438         if (Keyboard::is_context_menu_event (ev)) {
1439                 _group_tabs->get_menu(group)->popup (1, ev->time);
1440                 return true;
1441         }
1442
1443         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1444         case 0:
1445                 if (Keyboard::is_edit_event (ev)) {
1446                         if (group) {
1447                                 // edit_route_group (group);
1448 #ifdef __APPLE__
1449                                 group_display.queue_draw();
1450 #endif
1451                                 return true;
1452                         }
1453                 }
1454                 break;
1455
1456         case 1:
1457         {
1458                 bool visible = (*iter)[group_columns.visible];
1459                 (*iter)[group_columns.visible] = !visible;
1460 #ifdef __APPLE__
1461                 group_display.queue_draw();
1462 #endif
1463                 return true;
1464         }
1465
1466         default:
1467                 break;
1468         }
1469
1470         return false;
1471  }
1472
1473 void
1474 Mixer_UI::activate_all_route_groups ()
1475 {
1476         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1477 }
1478
1479 void
1480 Mixer_UI::disable_all_route_groups ()
1481 {
1482         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1483 }
1484
1485 void
1486 Mixer_UI::route_groups_changed ()
1487 {
1488         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1489
1490         _in_group_rebuild_or_clear = true;
1491
1492         /* just rebuild the while thing */
1493
1494         group_model->clear ();
1495
1496 #if 0
1497         /* this is currently not used,
1498          * Mixer_UI::group_display_button_press() has a case for it,
1499          * and a commented edit_route_group() but that's n/a since 2011.
1500          *
1501          * This code is left as reminder that
1502          * row[group_columns.group] = 0 has special meaning.
1503          */
1504         {
1505                 TreeModel::Row row;
1506                 row = *(group_model->append());
1507                 row[group_columns.visible] = true;
1508                 row[group_columns.text] = (_("-all-"));
1509                 row[group_columns.group] = 0;
1510         }
1511 #endif
1512
1513         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1514
1515         _group_tabs->set_dirty ();
1516         _in_group_rebuild_or_clear = false;
1517 }
1518
1519 void
1520 Mixer_UI::new_route_group ()
1521 {
1522         RouteList rl;
1523
1524         _group_tabs->run_new_group_dialog (rl);
1525 }
1526
1527 void
1528 Mixer_UI::remove_selected_route_group ()
1529 {
1530         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1531         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1532
1533         if (rows.empty()) {
1534                 return;
1535         }
1536
1537         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1538         TreeIter iter;
1539
1540         /* selection mode is single, so rows.begin() is it */
1541
1542         if ((iter = group_model->get_iter (*i))) {
1543
1544                 RouteGroup* rg = (*iter)[group_columns.group];
1545
1546                 if (rg) {
1547                         _session->remove_route_group (*rg);
1548                 }
1549         }
1550 }
1551
1552 void
1553 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1554 {
1555         if (in_group_row_change) {
1556                 return;
1557         }
1558
1559         /* force an update of any mixer strips that are using this group,
1560            otherwise mix group names don't change in mixer strips
1561         */
1562
1563         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1564                 if ((*i)->route_group() == group) {
1565                         (*i)->route_group_changed();
1566                 }
1567         }
1568
1569         TreeModel::iterator i;
1570         TreeModel::Children rows = group_model->children();
1571         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1572
1573         in_group_row_change = true;
1574
1575         for (i = rows.begin(); i != rows.end(); ++i) {
1576                 if ((*i)[group_columns.group] == group) {
1577                         (*i)[group_columns.visible] = !group->is_hidden ();
1578                         (*i)[group_columns.text] = group->name ();
1579                         break;
1580                 }
1581         }
1582
1583         in_group_row_change = false;
1584
1585         if (change.contains (Properties::name)) {
1586                 _group_tabs->set_dirty ();
1587         }
1588
1589         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1590                 if ((*j)->route_group() == group) {
1591                         if (group->is_hidden ()) {
1592                                 hide_strip (*j);
1593                         } else {
1594                                 show_strip (*j);
1595                         }
1596                 }
1597         }
1598 }
1599
1600 void
1601 Mixer_UI::show_mixer_list (bool yn)
1602 {
1603         if (yn) {
1604                 list_vpacker.show ();
1605
1606                 //if user wants to show the pane, we should make sure that it is wide enough to be visible
1607                 int width = list_hpane.get_position();
1608                 if (width < 40) {
1609                         list_hpane.set_position(40);
1610                 }
1611         } else {
1612                 list_vpacker.hide ();
1613         }
1614
1615         _show_mixer_list = yn;
1616 }
1617
1618 void
1619 Mixer_UI::show_monitor_section (bool yn)
1620 {
1621         if (!monitor_section()) {
1622                 return;
1623         }
1624         if (monitor_section()->tearoff().torn_off()) {
1625                 return;
1626         }
1627
1628         if (yn) {
1629                 monitor_section()->tearoff().show();
1630         } else {
1631                 monitor_section()->tearoff().hide();
1632         }
1633 }
1634
1635 void
1636 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1637 {
1638         RouteGroup* group;
1639         TreeIter iter;
1640
1641         if ((iter = group_model->get_iter (path))) {
1642
1643                 if ((group = (*iter)[group_columns.group]) == 0) {
1644                         return;
1645                 }
1646
1647                 if (new_text != group->name()) {
1648                         group->set_name (new_text);
1649                 }
1650         }
1651 }
1652
1653 void
1654 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1655 {
1656         RouteGroup* group;
1657
1658         if (in_group_row_change) {
1659                 return;
1660         }
1661
1662         if ((group = (*iter)[group_columns.group]) == 0) {
1663                 return;
1664         }
1665
1666         std::string name = (*iter)[group_columns.text];
1667
1668         if (name != group->name()) {
1669                 group->set_name (name);
1670         }
1671
1672         bool hidden = !(*iter)[group_columns.visible];
1673
1674         if (hidden != group->is_hidden ()) {
1675                 group->set_hidden (hidden, this);
1676         }
1677 }
1678
1679 /** Called when a group model row is deleted, but also when the model is
1680  *  reordered by a user drag-and-drop; the latter is what we are
1681  *  interested in here.
1682  */
1683 void
1684 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1685 {
1686         if (_in_group_rebuild_or_clear) {
1687                 return;
1688         }
1689
1690         /* Re-write the session's route group list so that the new order is preserved */
1691
1692         list<RouteGroup*> new_list;
1693
1694         Gtk::TreeModel::Children children = group_model->children();
1695         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1696                 RouteGroup* g = (*i)[group_columns.group];
1697                 if (g) {
1698                         new_list.push_back (g);
1699                 }
1700         }
1701
1702         _session->reorder_route_groups (new_list);
1703 }
1704
1705
1706 void
1707 Mixer_UI::add_route_group (RouteGroup* group)
1708 {
1709         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1710         bool focus = false;
1711
1712         in_group_row_change = true;
1713
1714         TreeModel::Row row = *(group_model->append());
1715         row[group_columns.visible] = !group->is_hidden ();
1716         row[group_columns.group] = group;
1717         if (!group->name().empty()) {
1718                 row[group_columns.text] = group->name();
1719         } else {
1720                 row[group_columns.text] = _("unnamed");
1721                 focus = true;
1722         }
1723
1724         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1725
1726         if (focus) {
1727                 TreeViewColumn* col = group_display.get_column (0);
1728                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1729                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1730         }
1731
1732         _group_tabs->set_dirty ();
1733
1734         in_group_row_change = false;
1735 }
1736
1737 bool
1738 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1739 {
1740         using namespace Menu_Helpers;
1741
1742         if (Keyboard::is_context_menu_event (ev)) {
1743                 ARDOUR_UI::instance()->add_route ();
1744                 return true;
1745         }
1746
1747         return false;
1748 }
1749
1750 void
1751 Mixer_UI::scroller_drag_data_received (const Glib::RefPtr<Gdk::DragContext>& context, int x, int y, const Gtk::SelectionData& data, guint info, guint time)
1752 {
1753         printf ("Mixer_UI::scroller_drag_data_received\n");
1754         if (data.get_target() != "PluginFavoritePtr") {
1755                 context->drag_finish (false, false, time);
1756                 return;
1757         }
1758
1759         const void * d = data.get_data();
1760         const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>* tv = reinterpret_cast<const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>*>(d);
1761
1762         PluginPresetList nfos;
1763         TreeView* source;
1764         tv->get_object_drag_data (nfos, &source);
1765
1766         Route::ProcessorList pl;
1767         bool ok = false;
1768
1769         for (list<PluginPresetPtr>::const_iterator i = nfos.begin(); i != nfos.end(); ++i) {
1770                 PluginPresetPtr ppp = (*i);
1771                 PluginInfoPtr pip = ppp->_pip;
1772                 if (!pip->is_instrument ()) {
1773                         continue;
1774                 }
1775                 ARDOUR_UI::instance()->session_add_midi_track (NULL, 1, _("MIDI"), Config->get_strict_io (), pip, ppp->_preset.valid ? &ppp->_preset : 0);
1776                 ok = true;
1777         }
1778
1779         context->drag_finish (ok, false, time);
1780 }
1781
1782 void
1783 Mixer_UI::set_strip_width (Width w, bool save)
1784 {
1785         _strip_width = w;
1786
1787         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1788                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1789         }
1790 }
1791
1792
1793 struct PluginStateSorter {
1794 public:
1795         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
1796                 std::list<std::string>::const_iterator aiter = std::find(_user.begin(), _user.end(), (*a).unique_id);
1797                 std::list<std::string>::const_iterator biter = std::find(_user.begin(), _user.end(), (*b).unique_id);
1798                 if (aiter != _user.end() && biter != _user.end()) {
1799                         return std::distance (_user.begin(), aiter)  < std::distance (_user.begin(), biter);
1800                 }
1801                 if (aiter != _user.end()) {
1802                         return true;
1803                 }
1804                 if (biter != _user.end()) {
1805                         return false;
1806                 }
1807                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
1808         }
1809
1810         PluginStateSorter(std::list<std::string> user) : _user (user)  {}
1811 private:
1812         std::list<std::string> _user;
1813 };
1814
1815 int
1816 Mixer_UI::set_state (const XMLNode& node, int version)
1817 {
1818         XMLProperty const * prop;
1819
1820         Tabbable::set_state (node, version);
1821
1822         if ((prop = node.property ("narrow-strips"))) {
1823                 if (string_is_affirmative (prop->value())) {
1824                         set_strip_width (Narrow);
1825                 } else {
1826                         set_strip_width (Wide);
1827                 }
1828         }
1829
1830         if ((prop = node.property ("show-mixer"))) {
1831                 if (string_is_affirmative (prop->value())) {
1832                        _visible = true;
1833                 }
1834         }
1835
1836         if ((prop = node.property ("maximised"))) {
1837                 bool yn = string_is_affirmative (prop->value());
1838                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1839                 assert (act);
1840                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1841                 bool fs = tact && tact->get_active();
1842                 if (yn ^ fs) {
1843                         ActionManager::do_action ("Common", "ToggleMaximalMixer");
1844                 }
1845         }
1846
1847         if ((prop = node.property ("show-mixer-list"))) {
1848                 bool yn = string_is_affirmative (prop->value());
1849                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMixerList"));
1850                 assert (act);
1851                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1852
1853                 /* do it twice to force the change */
1854                 tact->set_active (!yn);
1855                 tact->set_active (yn);
1856         }
1857
1858
1859         XMLNode* plugin_order;
1860         if ((plugin_order = find_named_node (node, "PluginOrder")) != 0) {
1861                 store_current_favorite_order ();
1862                 std::list<string> order;
1863                 const XMLNodeList& kids = plugin_order->children("PluginInfo");
1864                 XMLNodeConstIterator i;
1865                 for (i = kids.begin(); i != kids.end(); ++i) {
1866                         if ((prop = (*i)->property ("unique-id"))) {
1867                                 std::string unique_id = prop->value();
1868                                 order.push_back (unique_id);
1869                                 if ((prop = (*i)->property ("expanded"))) {
1870                                         favorite_ui_state[unique_id] = string_is_affirmative (prop->value());
1871                                 }
1872                         }
1873                 }
1874                 PluginStateSorter cmp (order);
1875                 favorite_order.sort (cmp);
1876                 sync_treeview_from_favorite_order ();
1877         }
1878         return 0;
1879 }
1880
1881 XMLNode&
1882 Mixer_UI::get_state ()
1883 {
1884         XMLNode* node = new XMLNode (X_("Mixer"));
1885         char buf[128];
1886
1887         node->add_child_nocopy (Tabbable::get_state());
1888
1889         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (rhs_pane1, true));
1890         node->add_property(X_("mixer-rhs-pane1-pos"), string(buf));
1891         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (rhs_pane2, true));
1892         node->add_property(X_("mixer-rhs_pane2-pos"), string(buf));
1893         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (list_hpane, false));
1894         node->add_property(X_("mixer-list-hpane-pos"), string(buf));
1895         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (inner_pane, false));
1896         node->add_property(X_("mixer-inner-pane-pos"), string(buf));
1897
1898         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1899         node->add_property ("show-mixer", _visible ? "yes" : "no");
1900         node->add_property ("show-mixer-list", _show_mixer_list ? "yes" : "no");
1901         node->add_property ("maximised", _maximised ? "yes" : "no");
1902
1903         store_current_favorite_order ();
1904         XMLNode* plugin_order = new XMLNode ("PluginOrder");
1905         int cnt = 0;
1906         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i, ++cnt) {
1907                 XMLNode* p = new XMLNode ("PluginInfo");
1908                 p->add_property ("sort", cnt);
1909                 p->add_property ("unique-id", (*i)->unique_id);
1910                 if (favorite_ui_state.find ((*i)->unique_id) != favorite_ui_state.end ()) {
1911                         p->add_property ("expanded", favorite_ui_state[(*i)->unique_id]);
1912                 }
1913                 plugin_order->add_child_nocopy (*p);
1914         }
1915         node->add_child_nocopy (*plugin_order);
1916
1917         return *node;
1918 }
1919
1920 void
1921 Mixer_UI::pane_allocation_handler (Allocation& allocation, Gtk::Paned* which)
1922 {
1923         float pos;
1924         XMLProperty* prop = 0;
1925         XMLNode* geometry = ARDOUR_UI::instance()->mixer_settings();
1926         int height = default_height;
1927         static bool done[4] = { false, false, false, false };
1928
1929         /* Gtk::Paned behaves very oddly and rather undesirably. Setting the
1930          * position is a crapshoot if you time it incorrectly with the overall
1931          * sizing of the Paned. For example, if you might retrieve the size with
1932          * ::get_position() and then later call ::set_position() on a Paned at
1933          * a time when its allocation is different than it was when you retrieved
1934          * the position. The position will be interpreted as the size of the
1935          * first (top or left) child widget. If packing/size allocation later
1936          * resizes the Paned to a (final) smaller size, the position will be
1937          * used in ways that mean that the Paned ends up NOT in the same state
1938          * that it was in when you originally saved the position.
1939          *
1940          * Concrete example: Paned is 800 pixels wide, position is 400
1941          * (halfway).  Save position as 400. During program restart, set
1942          * position to 400, before Paned has been allocated any space. Paned
1943          * ends up initially sized to 1200 pixels.  Position is now 1/3 of the
1944          * way across/down.  Subsequent resizes will leave the position 1/3 of
1945          * the way across, rather than leaving it as a fixed pixel
1946          * position. Eventually, the Paned ends up 800 pixels wide/high again,
1947          * but the position is now 267, not 400.
1948          *
1949          * So ...
1950          *
1951          * We deal with this by using two strategies:
1952          *
1953          * 1) only set the position if the allocated size of the Paned is at
1954          * least as big as it needs to be for the position to make sense.
1955          *
1956          * 2) in recent versions of Ardour, save the position as a fraction,
1957          * and restore it using that fraction.
1958          *
1959          * So, we will only call ::set_position() AFTER the Paned is of a
1960          * sensible size, and then in addition, we will set the position in a
1961          * way that will be maintained as/when/if the Paned is resized.
1962          *
1963          * Once we've called ::set_position() on a Paned, we don't do it
1964          * again.
1965          */
1966
1967         if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
1968
1969                 if (done[0]) {
1970                         return;
1971                 }
1972
1973                 if (!geometry || (prop = geometry->property("mixer-rhs-pane1-pos")) == 0) {
1974                         pos = height / 3;
1975                 } else {
1976                         pos = atof (prop->value());
1977                 }
1978
1979                 if (pos > 1.0f) {
1980                         /* older versions of Ardour stored absolute position */
1981                         if ((done[0] = (allocation.get_height() > pos))) {
1982                                 rhs_pane1.set_position (pos);
1983                         }
1984                 } else {
1985                         if ((done[0] = (allocation.get_height() > 1.0/pos))) {
1986                                 paned_set_position_as_fraction (rhs_pane1, pos, true);
1987                         }
1988                 }
1989         }
1990
1991         if (which == static_cast<Gtk::Paned*> (&rhs_pane2)) {
1992
1993                 if (done[1]) {
1994                         return;
1995                 }
1996
1997                 if (!geometry || (prop = geometry->property("mixer-rhs-pane2-pos")) == 0) {
1998                         pos = 2 * height / 3;
1999                 } else {
2000                         pos = atof (prop->value());
2001                 }
2002
2003                 if (pos > 1.0f) {
2004                         /* older versions of Ardour stored absolute position */
2005                         if ((done[1] = (allocation.get_height() > pos))) {
2006                                 rhs_pane2.set_position (pos);
2007                         }
2008                 } else {
2009                         if ((done[1] = (allocation.get_height() > 1.0/pos))) {
2010                                 paned_set_position_as_fraction (rhs_pane2, pos, true);
2011                         }
2012                 }
2013         }
2014
2015         if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
2016
2017                 if (done[2]) {
2018                         return;
2019                 }
2020
2021                 if (!geometry || (prop = geometry->property("mixer-list-hpane-pos")) == 0) {
2022                         pos = std::max ((float)100, rintf ((float) 125 * UIConfiguration::instance().get_ui_scale()));
2023                 } else {
2024                         pos = max (0.1, atof (prop->value ()));
2025                 }
2026
2027                 if (pos > 1.0f) {
2028                         if ((done[2] = (allocation.get_width() > pos))) {
2029                                 list_hpane.set_position (pos);
2030                         }
2031                 } else {
2032                         if ((done[2] = (allocation.get_width() > 1.0/pos))) {
2033                                 paned_set_position_as_fraction (list_hpane, pos, false);
2034                         }
2035                 }
2036         }
2037
2038         if (which == static_cast<Gtk::Paned*> (&inner_pane)) {
2039
2040                 if (done[3]) {
2041                         return;
2042                 }
2043
2044                 if (!geometry || (prop = geometry->property("mixer-inner-pane-pos")) == 0) {
2045                         pos = std::max ((float)100, rintf ((float) 125 * UIConfiguration::instance().get_ui_scale()));
2046                 } else {
2047                         pos = max (0.1, atof (prop->value ()));
2048                 }
2049
2050                 if (pos > 1.0f) {
2051                         /* older versions of Ardour stored absolute position */
2052                         if ((done[3] = (allocation.get_width() > pos))) {
2053                                 inner_pane.set_position (pos);
2054                         }
2055                 } else {
2056                         if ((done[3] = (allocation.get_width() > 1.0/pos))) {
2057                                 paned_set_position_as_fraction (inner_pane, pos, false);
2058                         }
2059                 }
2060         }
2061 }
2062
2063 void
2064 Mixer_UI::scroll_left ()
2065 {
2066         if (!scroller.get_hscrollbar()) return;
2067         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2068         /* stupid GTK: can't rely on clamping across versions */
2069         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
2070 }
2071
2072 void
2073 Mixer_UI::scroll_right ()
2074 {
2075         if (!scroller.get_hscrollbar()) return;
2076         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2077         /* stupid GTK: can't rely on clamping across versions */
2078         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
2079 }
2080
2081 bool
2082 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
2083 {
2084         switch (ev->direction) {
2085         case GDK_SCROLL_LEFT:
2086                 scroll_left ();
2087                 return true;
2088         case GDK_SCROLL_UP:
2089                 if (ev->state & Keyboard::TertiaryModifier) {
2090                         scroll_left ();
2091                         return true;
2092                 }
2093                 return false;
2094
2095         case GDK_SCROLL_RIGHT:
2096                 scroll_right ();
2097                 return true;
2098
2099         case GDK_SCROLL_DOWN:
2100                 if (ev->state & Keyboard::TertiaryModifier) {
2101                         scroll_right ();
2102                         return true;
2103                 }
2104                 return false;
2105         }
2106
2107         return false;
2108 }
2109
2110
2111 void
2112 Mixer_UI::parameter_changed (string const & p)
2113 {
2114         if (p == "show-group-tabs") {
2115                 bool const s = _session->config.get_show_group_tabs ();
2116                 if (s) {
2117                         _group_tabs->show ();
2118                 } else {
2119                         _group_tabs->hide ();
2120                 }
2121         } else if (p == "default-narrow_ms") {
2122                 bool const s = UIConfiguration::instance().get_default_narrow_ms ();
2123                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2124                         (*i)->set_width_enum (s ? Narrow : Wide, this);
2125                 }
2126         } else if (p == "remote-model") {
2127                 reset_remote_control_ids ();
2128         } else if (p == "use-monitor-bus") {
2129                 if (_session && !_session->monitor_out()) {
2130                         monitor_section_detached ();
2131                 }
2132         }
2133 }
2134
2135 void
2136 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
2137 {
2138         g->set_active (a, this);
2139 }
2140
2141 PluginSelector*
2142 Mixer_UI::plugin_selector()
2143 {
2144 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
2145         if (!_plugin_selector)
2146                 _plugin_selector = new PluginSelector (PluginManager::instance());
2147 #endif
2148
2149         return _plugin_selector;
2150 }
2151
2152 void
2153 Mixer_UI::setup_track_display ()
2154 {
2155         track_model = ListStore::create (track_columns);
2156         track_display.set_model (track_model);
2157         track_display.append_column (_("Strips"), track_columns.text);
2158         track_display.append_column (_("Show"), track_columns.visible);
2159         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
2160         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
2161         track_display.get_column (0)->set_expand(true);
2162         track_display.get_column (1)->set_expand(false);
2163         track_display.get_column (0)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
2164         track_display.set_name (X_("EditGroupList"));
2165         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
2166         track_display.set_reorderable (true);
2167         track_display.set_headers_visible (true);
2168         track_display.set_can_focus(false);
2169
2170         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
2171         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
2172
2173         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
2174         track_list_visible_cell->property_activatable() = true;
2175         track_list_visible_cell->property_radio() = false;
2176         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
2177
2178         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
2179
2180         track_display_scroller.add (track_display);
2181         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
2182
2183         VBox* v = manage (new VBox);
2184         v->show ();
2185         v->pack_start (track_display_scroller, true, true);
2186
2187         Button* b = manage (new Button);
2188         b->show ();
2189         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
2190         w->show ();
2191         b->add (*w);
2192
2193         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
2194
2195         v->pack_start (*b, false, false);
2196
2197         track_display_frame.set_name("BaseFrame");
2198         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
2199         track_display_frame.add (*v);
2200
2201         track_display_scroller.show();
2202         track_display_frame.show();
2203         track_display.show();
2204 }
2205
2206 void
2207 Mixer_UI::new_track_or_bus ()
2208 {
2209         ARDOUR_UI::instance()->add_route ();
2210 }
2211
2212 void
2213 Mixer_UI::update_title ()
2214 {
2215         if (!own_window()) {
2216                 return;
2217         }
2218
2219         if (_session) {
2220                 string n;
2221
2222                 if (_session->snap_name() != _session->name()) {
2223                         n = _session->snap_name ();
2224                 } else {
2225                         n = _session->name ();
2226                 }
2227
2228                 if (_session->dirty ()) {
2229                         n = "*" + n;
2230                 }
2231
2232                 WindowTitle title (n);
2233                 title += S_("Window|Mixer");
2234                 title += Glib::get_application_name ();
2235                 own_window()->set_title (title.get_string());
2236
2237         } else {
2238
2239                 WindowTitle title (S_("Window|Mixer"));
2240                 title += Glib::get_application_name ();
2241                 own_window()->set_title (title.get_string());
2242         }
2243 }
2244
2245 MixerStrip*
2246 Mixer_UI::strip_by_x (int x)
2247 {
2248         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2249                 int x1, x2, y;
2250
2251                 (*i)->translate_coordinates (_content, 0, 0, x1, y);
2252                 x2 = x1 + (*i)->get_width();
2253
2254                 if (x >= x1 && x <= x2) {
2255                         return (*i);
2256                 }
2257         }
2258
2259         return 0;
2260 }
2261
2262 void
2263 Mixer_UI::set_route_targets_for_operation ()
2264 {
2265         _route_targets.clear ();
2266
2267         if (!_selection.empty()) {
2268                 _route_targets = _selection.routes;
2269                 return;
2270         }
2271
2272 //  removed "implicit" selections of strips, after discussion on IRC
2273
2274 }
2275
2276 void
2277 Mixer_UI::monitor_section_going_away ()
2278 {
2279         if (_monitor_section) {
2280                 monitor_section_detached ();
2281                 out_packer.remove (_monitor_section->tearoff());
2282                 _monitor_section->set_session (0);
2283                 delete _monitor_section;
2284                 _monitor_section = 0;
2285         }
2286 }
2287
2288 void
2289 Mixer_UI::toggle_midi_input_active (bool flip_others)
2290 {
2291         boost::shared_ptr<RouteList> rl (new RouteList);
2292         bool onoff = false;
2293
2294         set_route_targets_for_operation ();
2295
2296         for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
2297                 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
2298
2299                 if (mt) {
2300                         rl->push_back ((*r)->route());
2301                         onoff = !mt->input_active();
2302                 }
2303         }
2304
2305         _session->set_exclusive_input_active (rl, onoff, flip_others);
2306 }
2307
2308 void
2309 Mixer_UI::maximise_mixer_space ()
2310 {
2311         if (!own_window()) {
2312                 return;
2313         }
2314
2315         if (_maximised) {
2316                 return;
2317         }
2318
2319         _window->fullscreen ();
2320         _maximised = true;
2321 }
2322
2323 void
2324 Mixer_UI::restore_mixer_space ()
2325 {
2326         if (!own_window()) {
2327                 return;
2328         }
2329
2330         if (!_maximised) {
2331                 return;
2332         }
2333
2334         own_window()->unfullscreen();
2335         _maximised = false;
2336 }
2337
2338 void
2339 Mixer_UI::monitor_section_attached ()
2340 {
2341         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2342         Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
2343         act->set_sensitive (true);
2344         tact->set_active ();
2345 }
2346
2347 void
2348 Mixer_UI::monitor_section_detached ()
2349 {
2350         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2351         act->set_sensitive (false);
2352 }
2353
2354 void
2355 Mixer_UI::store_current_favorite_order ()
2356 {
2357         typedef Gtk::TreeModel::Children type_children;
2358         type_children children = favorite_plugins_model->children();
2359         favorite_order.clear();
2360         for(type_children::iterator iter = children.begin(); iter != children.end(); ++iter)
2361         {
2362                 Gtk::TreeModel::Row row = *iter;
2363                 ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2364                 favorite_order.push_back (ppp->_pip);
2365                 std::string name = row[favorite_plugins_columns.name];
2366                 favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2367         }
2368 }
2369
2370 void
2371 Mixer_UI::save_favorite_ui_state (const TreeModel::iterator& iter, const TreeModel::Path& path)
2372 {
2373         Gtk::TreeModel::Row row = *iter;
2374         ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2375         assert (ppp);
2376         favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2377 }
2378
2379 void
2380 Mixer_UI::refiller (PluginInfoList& result, const PluginInfoList& plugs)
2381 {
2382         PluginManager& manager (PluginManager::instance());
2383         for (PluginInfoList::const_iterator i = plugs.begin(); i != plugs.end(); ++i) {
2384                 if (manager.get_status (*i) != PluginManager::Favorite) {
2385                         continue;
2386                 }
2387                 result.push_back (*i);
2388         }
2389 }
2390
2391 struct PluginCustomSorter {
2392 public:
2393         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
2394                 PluginInfoList::const_iterator aiter = _user.begin();
2395                 PluginInfoList::const_iterator biter = _user.begin();
2396                 while (aiter != _user.end()) { if ((*aiter)->unique_id == a->unique_id) { break; } ++aiter; }
2397                 while (biter != _user.end()) { if ((*biter)->unique_id == b->unique_id) { break; } ++biter; }
2398
2399                 if (aiter != _user.end() && biter != _user.end()) {
2400                         return std::distance (_user.begin(), aiter) < std::distance (_user.begin(), biter);
2401                 }
2402                 if (aiter != _user.end()) {
2403                         return true;
2404                 }
2405                 if (biter != _user.end()) {
2406                         return false;
2407                 }
2408                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
2409         }
2410         PluginCustomSorter(PluginInfoList user) : _user (user)  {}
2411 private:
2412         PluginInfoList _user;
2413 };
2414
2415 void
2416 Mixer_UI::refill_favorite_plugins ()
2417 {
2418         PluginInfoList plugs;
2419         PluginManager& mgr (PluginManager::instance());
2420
2421 #ifdef LV2_SUPPORT
2422         refiller (plugs, mgr.lv2_plugin_info ());
2423 #endif
2424 #ifdef WINDOWS_VST_SUPPORT
2425         refiller (plugs, mgr.windows_vst_plugin_info ());
2426 #endif
2427 #ifdef LXVST_SUPPORT
2428         refiller (plugs, mgr.lxvst_plugin_info ());
2429 #endif
2430 #ifdef AUDIOUNIT_SUPPORT
2431         refiller (plugs, mgr.au_plugin_info ());
2432 #endif
2433         refiller (plugs, mgr.ladspa_plugin_info ());
2434         refiller (plugs, mgr.lua_plugin_info ());
2435
2436         store_current_favorite_order ();
2437
2438         PluginCustomSorter cmp (favorite_order);
2439         plugs.sort (cmp);
2440
2441         favorite_order = plugs;
2442
2443         sync_treeview_from_favorite_order ();
2444 }
2445
2446 void
2447 Mixer_UI::sync_treeview_favorite_ui_state (const TreeModel::Path& path, const TreeModel::iterator&)
2448 {
2449         TreeIter iter;
2450         if (!(iter = favorite_plugins_model->get_iter (path))) {
2451                 return;
2452         }
2453         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2454         if (!ppp) {
2455                 return;
2456         }
2457         PluginInfoPtr pip = ppp->_pip;
2458         if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2459                 if (favorite_ui_state[pip->unique_id]) {
2460                         favorite_plugins_display.expand_row (path, true);
2461                 }
2462         }
2463 }
2464
2465 void
2466 Mixer_UI::sync_treeview_from_favorite_order ()
2467 {
2468         favorite_plugins_model->clear ();
2469         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i) {
2470                 PluginInfoPtr pip = (*i);
2471
2472                 TreeModel::Row newrow = *(favorite_plugins_model->append());
2473                 newrow[favorite_plugins_columns.name] = (*i)->name;
2474                 newrow[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip));
2475                 if (!_session) {
2476                         continue;
2477                 }
2478
2479                 vector<ARDOUR::Plugin::PresetRecord> presets = (*i)->get_presets (true);
2480                 for (vector<ARDOUR::Plugin::PresetRecord>::const_iterator j = presets.begin(); j != presets.end(); ++j) {
2481                         Gtk::TreeModel::Row child_row = *(favorite_plugins_model->append (newrow.children()));
2482                         child_row[favorite_plugins_columns.name] = (*j).label;
2483                         child_row[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip, &(*j)));
2484                 }
2485                 if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2486                         if (favorite_ui_state[pip->unique_id]) {
2487                                 favorite_plugins_display.expand_row (favorite_plugins_model->get_path(newrow), true);
2488                         }
2489                 }
2490         }
2491 }
2492
2493 void
2494 Mixer_UI::popup_note_context_menu (GdkEventButton *ev)
2495 {
2496         using namespace Gtk::Menu_Helpers;
2497
2498         Gtk::Menu* m = manage (new Menu);
2499         MenuList& items = m->items ();
2500
2501         if (_selection.routes.empty()) {
2502                 items.push_back (MenuElem (_("No Track/Bus is selected.")));
2503         } else {
2504                 items.push_back (MenuElem (_("Add at the top"),
2505                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddTop)));
2506                 items.push_back (MenuElem (_("Add Pre-Fader"),
2507                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPreFader)));
2508                 items.push_back (MenuElem (_("Add Post-Fader"),
2509                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPostFader)));
2510                 items.push_back (MenuElem (_("Add at the end"),
2511                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddBottom)));
2512         }
2513
2514         items.push_back (SeparatorElem());
2515
2516         items.push_back (MenuElem (_("Remove from favorites"), sigc::mem_fun (*this, &Mixer_UI::remove_selected_from_favorites)));
2517
2518         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2519         if (ppp && ppp->_preset.valid && ppp->_preset.user) {
2520                 // we cannot currently delete AU presets
2521                 if (!ppp->_pip || ppp->_pip->type != AudioUnit) {
2522                         items.push_back (MenuElem (_("Delete Preset"), sigc::mem_fun (*this, &Mixer_UI::delete_selected_preset)));
2523                 }
2524         }
2525
2526         m->popup (ev->button, ev->time);
2527 }
2528
2529 bool
2530 Mixer_UI::plugin_row_button_press (GdkEventButton *ev)
2531 {
2532         if ((ev->type == GDK_BUTTON_PRESS) && (ev->button == 3) ) {
2533                 TreeModel::Path path;
2534                 TreeViewColumn* column;
2535                 int cellx, celly;
2536                 if (favorite_plugins_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
2537                         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2538                         if (selection) {
2539                                 selection->unselect_all();
2540                                 selection->select(path);
2541                         }
2542                 }
2543                 ARDOUR::PluginPresetPtr ppp = selected_plugin();
2544                 if (ppp) {
2545                         popup_note_context_menu (ev);
2546                 }
2547         }
2548         return false;
2549 }
2550
2551
2552 PluginPresetPtr
2553 Mixer_UI::selected_plugin ()
2554 {
2555         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2556         if (!selection) {
2557                 return PluginPresetPtr();
2558         }
2559         Gtk::TreeModel::iterator iter = selection->get_selected();
2560         if (!iter) {
2561                 return PluginPresetPtr();
2562         }
2563         return (*iter)[favorite_plugins_columns.plugin];
2564 }
2565
2566 void
2567 Mixer_UI::add_selected_processor (ProcessorPosition pos)
2568 {
2569         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2570         if (ppp) {
2571                 add_favorite_processor (ppp, pos);
2572         }
2573 }
2574
2575 void
2576 Mixer_UI::delete_selected_preset ()
2577 {
2578         if (!_session) {
2579                 return;
2580         }
2581         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2582         if (!ppp || !ppp->_preset.valid || !ppp->_preset.user) {
2583                 return;
2584         }
2585         PluginPtr plugin = ppp->_pip->load (*_session);
2586         plugin->get_presets();
2587         plugin->remove_preset (ppp->_preset.label);
2588 }
2589
2590 void
2591 Mixer_UI::remove_selected_from_favorites ()
2592 {
2593         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2594         if (!ppp) {
2595                 return;
2596         }
2597         PluginManager::PluginStatusType status = PluginManager::Normal;
2598         PluginManager& manager (PluginManager::instance());
2599
2600         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2601         manager.save_statuses ();
2602 }
2603
2604 void
2605 Mixer_UI::plugin_row_activated (const TreeModel::Path& path, TreeViewColumn* column)
2606 {
2607         TreeIter iter;
2608         if (!(iter = favorite_plugins_model->get_iter (path))) {
2609                 return;
2610         }
2611         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2612         add_favorite_processor (ppp, AddPreFader); // TODO: preference?!
2613 }
2614
2615 void
2616 Mixer_UI::add_favorite_processor (ARDOUR::PluginPresetPtr ppp, ProcessorPosition pos)
2617 {
2618         if (!_session || _selection.routes.empty()) {
2619                 return;
2620         }
2621
2622         PluginInfoPtr pip = ppp->_pip;
2623         for (RouteUISelection::iterator i = _selection.routes.begin(); i != _selection.routes.end(); ++i) {
2624                 boost::shared_ptr<ARDOUR::Route> rt = (*i)->route();
2625                 if (!rt) { continue; }
2626
2627                 PluginPtr p = pip->load (*_session);
2628                 if (!p) { continue; }
2629
2630                 if (ppp->_preset.valid) {
2631                         p->load_preset (ppp->_preset);
2632                 }
2633
2634                 Route::ProcessorStreams err;
2635                 boost::shared_ptr<Processor> processor (new PluginInsert (*_session, p));
2636
2637                 switch (pos) {
2638                         case AddTop:
2639                                 rt->add_processor_by_index (processor, 0, &err, Config->get_new_plugins_active ());
2640                                 break;
2641                         case AddPreFader:
2642                                 rt->add_processor (processor, PreFader, &err, Config->get_new_plugins_active ());
2643                                 break;
2644                         case AddPostFader:
2645                                 {
2646                                         int idx = 0;
2647                                         int pos = 0;
2648                                         for (;;++idx) {
2649                                                 boost::shared_ptr<Processor> np = rt->nth_processor (idx);
2650                                                 if (!np) {
2651                                                         break;
2652                                                 }
2653                                                 if (!np->display_to_user()) {
2654                                                         continue;
2655                                                 }
2656                                                 if (boost::dynamic_pointer_cast<Amp> (np) && // Fader, not Trim
2657                                                                 boost::dynamic_pointer_cast<Amp> (np)->gain_control()->parameter().type() == GainAutomation) {
2658                                                         break;
2659                                                 }
2660                                                 ++pos;
2661                                         }
2662                                         rt->add_processor_by_index (processor, ++pos, &err, Config->get_new_plugins_active ());
2663                                 }
2664                                 break;
2665                         case AddBottom:
2666                                 rt->add_processor_by_index (processor, -1, &err, Config->get_new_plugins_active ());
2667                                 break;
2668                 }
2669         }
2670 }
2671
2672 bool
2673 PluginTreeStore::row_drop_possible_vfunc(const Gtk::TreeModel::Path& dest, const Gtk::SelectionData& data) const
2674 {
2675         if (data.get_target() != "GTK_TREE_MODEL_ROW") {
2676                 return false;
2677         }
2678
2679         // only allow to re-order top-level items
2680         TreePath src;
2681         if (TreePath::get_from_selection_data (data, src)) {
2682                 if (src.up() && src.up()) {
2683                         return false;
2684                 }
2685         }
2686
2687         // don't allow to drop as child-rows.
2688         Gtk::TreeModel::Path _dest = dest; // un const
2689         const bool is_child = _dest.up (); // explicit bool for clang
2690         if (!is_child || _dest.empty ()) {
2691                 return true;
2692         }
2693         return false;
2694 }
2695
2696 void
2697 Mixer_UI::plugin_drop (const Glib::RefPtr<Gdk::DragContext>&, const Gtk::SelectionData& data)
2698 {
2699         if (data.get_target() != "PluginPresetPtr") {
2700                 return;
2701         }
2702         if (data.get_length() != sizeof (PluginPresetPtr)) {
2703                 return;
2704         }
2705         const void *d = data.get_data();
2706         const PluginPresetPtr ppp = *(static_cast<const PluginPresetPtr*> (d));
2707
2708         PluginManager::PluginStatusType status = PluginManager::Favorite;
2709         PluginManager& manager (PluginManager::instance());
2710
2711         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2712         manager.save_statuses ();
2713 }
2714
2715 void
2716 Mixer_UI::do_vca_assign (boost::shared_ptr<VCA> vca)
2717 {
2718         /* call protected MixerActor:: method */
2719         vca_assign (vca);
2720 }
2721
2722 void
2723 Mixer_UI::do_vca_unassign (boost::shared_ptr<VCA> vca)
2724 {
2725         /* call protected MixerActor:: method */
2726         vca_unassign (vca);
2727 }