gtk2_ardour/mixer_ui.cc

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