gtk2_ardour/mixer_ui.cc

   1 /*
   2     Copyright (C) 2000-2004 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifdef WAF_BUILD
  21 #include "gtk2ardour-config.h"
  22 #endif
  23
  24 #include <algorithm>
  25 #include <map>
  26 #include <sigc++/bind.h>
  27
  28 #include <gtkmm/accelmap.h>
  29
  30 #include "pbd/convert.h"
  31 #include "pbd/stacktrace.h"
  32 #include "pbd/unwind.h"
  33
  34 #include <glibmm/threads.h>
  35
  36 #include <gtkmm2ext/gtk_ui.h>
  37 #include <gtkmm2ext/keyboard.h>
  38 #include <gtkmm2ext/utils.h>
  39 #include <gtkmm2ext/tearoff.h>
  40 #include <gtkmm2ext/window_title.h>
  41 #include <gtkmm2ext/doi.h>
  42
  43 #include "ardour/amp.h"
  44 #include "ardour/debug.h"
  45 #include "ardour/audio_track.h"
  46 #include "ardour/midi_track.h"
  47 #include "ardour/plugin_manager.h"
  48 #include "ardour/route_group.h"
  49 #include "ardour/session.h"
  50 #include "ardour/vca.h"
  51 #include "ardour/vca_manager.h"
  52
  53 #include "keyboard.h"
  54 #include "mixer_ui.h"
  55 #include "mixer_strip.h"
  56 #include "monitor_section.h"
  57 #include "plugin_selector.h"
  58 #include "public_editor.h"
  59 #include "ardour_ui.h"
  60 #include "prompter.h"
  61 #include "utils.h"
  62 #include "route_sorter.h"
  63 #include "actions.h"
  64 #include "gui_thread.h"
  65 #include "mixer_group_tabs.h"
  66 #include "timers.h"
  67 #include "ui_config.h"
  68 #include "vca_master_strip.h"
  69
  70 #include "i18n.h"
  71
  72 using namespace ARDOUR;
  73 using namespace ARDOUR_UI_UTILS;
  74 using namespace PBD;
  75 using namespace Gtk;
  76 using namespace Glib;
  77 using namespace Gtkmm2ext;
  78 using namespace std;
  79
  80 using PBD::atoi;
  81 using PBD::Unwinder;
  82
  83 Mixer_UI* Mixer_UI::_instance = 0;
  84
  85 Mixer_UI*
  86 Mixer_UI::instance ()
  87 {
  88         if (!_instance) {
  89                 _instance  = new Mixer_UI;
  90         }
  91
  92         return _instance;
  93 }
  94
  95 Mixer_UI::Mixer_UI ()
  96         : Tabbable (_content, _("Mixer"))
  97         , no_track_list_redisplay (false)
  98         , in_group_row_change (false)
  99         , track_menu (0)
 100         , _monitor_section (0)
 101         , _plugin_selector (0)
 102         , _strip_width (UIConfiguration::instance().get_default_narrow_ms() ? Narrow : Wide)
 103         , ignore_reorder (false)
 104         , _in_group_rebuild_or_clear (false)
 105         , _route_deletion_in_progress (false)
 106         , _following_editor_selection (false)
 107         , _maximised (false)
 108         , _show_mixer_list (true)
 109 {
 110         Stripable::PresentationInfoChange.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_presentation_info, this), gui_context());
 111
 112         /* bindings was already set in MixerActor constructor */
 113
 114         _content.set_data ("ardour-bindings", bindings);
 115
 116         scroller.set_can_default (true);
 117         // set_default (scroller);
 118
 119         scroller_base.set_flags (Gtk::CAN_FOCUS);
 120         scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 121         scroller_base.set_name ("MixerWindow");
 122         scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 123
 124         /* set up drag-n-drop */
 125         vector<TargetEntry> target_table;
 126         target_table.push_back (TargetEntry ("PluginFavoritePtr"));
 127         scroller_base.drag_dest_set (target_table);
 128         scroller_base.signal_drag_data_received().connect (sigc::mem_fun(*this, &Mixer_UI::scroller_drag_data_received));
 129
 130         // add as last item of strip packer
 131         strip_packer.pack_end (scroller_base, true, true);
 132
 133         _group_tabs = new MixerGroupTabs (this);
 134         VBox* b = manage (new VBox);
 135         b->pack_start (*_group_tabs, PACK_SHRINK);
 136         b->pack_start (strip_packer);
 137         b->show_all ();
 138
 139         scroller.add (*b);
 140         scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 141
 142         setup_track_display ();
 143
 144         group_model = ListStore::create (group_columns);
 145         group_display.set_model (group_model);
 146         group_display.append_column (_("Group"), group_columns.text);
 147         group_display.append_column (_("Show"), group_columns.visible);
 148         group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
 149         group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
 150         group_display.get_column (0)->set_expand(true);
 151         group_display.get_column (1)->set_expand(false);
 152         group_display.set_name ("EditGroupList");
 153         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 154         group_display.set_reorderable (true);
 155         group_display.set_headers_visible (true);
 156         group_display.set_rules_hint (true);
 157         group_display.set_can_focus(false);
 158
 159         /* name is directly editable */
 160
 161         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
 162         name_cell->property_editable() = true;
 163         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 164
 165         /* use checkbox for the active column */
 166
 167         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (1));
 168         active_cell->property_activatable() = true;
 169         active_cell->property_radio() = false;
 170
 171         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 172         /* We use this to notice drag-and-drop reorders of the group list */
 173         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 174         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 175
 176         group_display_scroller.add (group_display);
 177         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 178
 179         HBox* route_group_display_button_box = manage (new HBox());
 180
 181         Button* route_group_add_button = manage (new Button ());
 182         Button* route_group_remove_button = manage (new Button ());
 183
 184         Widget* w;
 185
 186         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 187         w->show();
 188         route_group_add_button->add (*w);
 189
 190         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
 191         w->show();
 192         route_group_remove_button->add (*w);
 193
 194         route_group_display_button_box->set_homogeneous (true);
 195
 196         route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
 197         route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
 198
 199         route_group_display_button_box->add (*route_group_add_button);
 200         route_group_display_button_box->add (*route_group_remove_button);
 201
 202         group_display_vbox.pack_start (group_display_scroller, true, true);
 203         group_display_vbox.pack_start (*route_group_display_button_box, false, false);
 204
 205         group_display_frame.set_name ("BaseFrame");
 206         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 207         group_display_frame.add (group_display_vbox);
 208
 209
 210         list<TargetEntry> target_list;
 211         target_list.push_back (TargetEntry ("PluginPresetPtr"));
 212
 213         favorite_plugins_model = PluginTreeStore::create (favorite_plugins_columns);
 214         favorite_plugins_display.set_model (favorite_plugins_model);
 215         favorite_plugins_display.append_column (_("Favorite Plugins"), favorite_plugins_columns.name);
 216         favorite_plugins_display.set_name ("EditGroupList");
 217         favorite_plugins_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 218         favorite_plugins_display.set_reorderable (false);
 219         favorite_plugins_display.set_headers_visible (true);
 220         favorite_plugins_display.set_rules_hint (true);
 221         favorite_plugins_display.set_can_focus (false);
 222         favorite_plugins_display.add_object_drag (favorite_plugins_columns.plugin.index(), "PluginFavoritePtr");
 223         favorite_plugins_display.set_drag_column (favorite_plugins_columns.name.index());
 224         favorite_plugins_display.add_drop_targets (target_list);
 225         favorite_plugins_display.signal_row_activated().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_activated));
 226         favorite_plugins_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_button_press), false);
 227         favorite_plugins_display.signal_drop.connect (sigc::mem_fun (*this, &Mixer_UI::plugin_drop));
 228         favorite_plugins_display.signal_row_expanded().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 229         favorite_plugins_display.signal_row_collapsed().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 230         favorite_plugins_model->signal_row_has_child_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::sync_treeview_favorite_ui_state));
 231
 232         favorite_plugins_scroller.add (favorite_plugins_display);
 233         favorite_plugins_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 234
 235         favorite_plugins_frame.set_name ("BaseFrame");
 236         favorite_plugins_frame.set_shadow_type (Gtk::SHADOW_IN);
 237         favorite_plugins_frame.add (favorite_plugins_scroller);
 238
 239         rhs_pane1.pack1 (favorite_plugins_frame, false, true);
 240         rhs_pane1.pack2 (track_display_frame);
 241         rhs_pane2.pack1 (rhs_pane1);
 242         rhs_pane2.pack2 (group_display_frame);
 243
 244         list_vpacker.pack_start (rhs_pane2, true, true);
 245
 246         vca_scroller_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.pack1 (scroller);
 256         inner_pane.pack2 (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.pack1(list_vpacker, false, true);
 262         list_hpane.pack2(global_hpacker, true, false);
 263
 264         rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 265                                                         static_cast<Gtk::Paned*> (&rhs_pane1)));
 266         rhs_pane2.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 267                                                         static_cast<Gtk::Paned*> (&rhs_pane2)));
 268         list_hpane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 269                                                          static_cast<Gtk::Paned*> (&list_hpane)));
 270         inner_pane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 271                                                          static_cast<Gtk::Paned*> (&inner_pane)));
 272
 273         _content.pack_start (list_hpane, true, true);
 274
 275         update_title ();
 276
 277         route_group_display_button_box->show();
 278         route_group_add_button->show();
 279         route_group_remove_button->show();
 280
 281         _content.show ();
 282         _content.set_name ("MixerWindow");
 283
 284         global_hpacker.show();
 285         scroller.show();
 286         scroller_base.show();
 287         scroller_hpacker.show();
 288         mixer_scroller_vpacker.show();
 289         list_vpacker.show();
 290         group_display_button_label.show();
 291         group_display_button.show();
 292         group_display_scroller.show();
 293         favorite_plugins_scroller.show();
 294         group_display_vbox.show();
 295         group_display_frame.show();
 296         favorite_plugins_frame.show();
 297         rhs_pane1.show();
 298         rhs_pane2.show();
 299         strip_packer.show();
 300         inner_pane.show();
 301         vca_scroller.show();
 302         vca_packer.show();
 303         vca_scroller_base.show();
 304         out_packer.show();
 305         list_hpane.show();
 306         group_display.show();
 307         favorite_plugins_display.show();
 308
 309         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 310
 311         /* handle escape */
 312
 313         ARDOUR_UI::instance()->Escape.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::escape, this), gui_context());
 314
 315 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 316         _plugin_selector = new PluginSelector (PluginManager::instance ());
 317 #else
 318 #error implement deferred Plugin-Favorite list
 319 #endif
 320         PluginManager::instance ().PluginListChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 321         PluginManager::instance ().PluginStatusesChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 322         ARDOUR::Plugin::PresetsChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 323 }
 324
 325 Mixer_UI::~Mixer_UI ()
 326 {
 327         if (_monitor_section) {
 328                 monitor_section_detached ();
 329                 delete _monitor_section;
 330         }
 331         delete _plugin_selector;
 332 }
 333
 334 void
 335 Mixer_UI::escape ()
 336 {
 337         select_none ();
 338 }
 339
 340 void
 341 Mixer_UI::track_editor_selection ()
 342 {
 343         PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
 344 }
 345
 346 Gtk::Window*
 347 Mixer_UI::use_own_window (bool and_fill_it)
 348 {
 349         bool new_window = !own_window();
 350
 351         Gtk::Window* win = Tabbable::use_own_window (and_fill_it);
 352
 353
 354         if (win && new_window) {
 355                 win->set_name ("MixerWindow");
 356                 ARDOUR_UI::instance()->setup_toplevel_window (*win, _("Mixer"), this);
 357                 win->signal_scroll_event().connect (sigc::mem_fun (*this, &Mixer_UI::on_scroll_event), false);
 358                 win->signal_event().connect (sigc::bind (sigc::ptr_fun (&Keyboard::catch_user_event_for_pre_dialog_focus), win));
 359                 win->set_data ("ardour-bindings", bindings);
 360                 update_title ();
 361         }
 362
 363         return win;
 364 }
 365
 366 void
 367 Mixer_UI::show_window ()
 368 {
 369         Tabbable::show_window ();
 370
 371         /* show/hide group tabs as required */
 372         parameter_changed ("show-group-tabs");
 373
 374         /* now reset each strips width so the right widgets are shown */
 375         MixerStrip* ms;
 376
 377         TreeModel::Children rows = track_model->children();
 378         TreeModel::Children::iterator ri;
 379
 380         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 381                 ms = (*ri)[track_columns.strip];
 382                 if (!ms) {
 383                         continue;
 384                 }
 385                 ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 386                 /* Fix visibility of mixer strip stuff */
 387                 ms->parameter_changed (X_("mixer-element-visibility"));
 388         }
 389
 390         /* force focus into main area */
 391         scroller_base.grab_focus ();
 392 }
 393
 394 void
 395 Mixer_UI::add_masters (VCAList& vcas)
 396 {
 397         for (VCAList::iterator v = vcas.begin(); v != vcas.end(); ++v) {
 398
 399                 VCAMasterStrip* vms = new VCAMasterStrip (_session, *v);
 400
 401                 TreeModel::Row row = *(track_model->append());
 402                 row[track_columns.text] = (*v)->name();
 403                 row[track_columns.visible] = true;
 404                 row[track_columns.vca] = vms;
 405
 406                 vms->CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_master, this, _1), gui_context());
 407         }
 408
 409         redisplay_track_list ();
 410 }
 411
 412 void
 413 Mixer_UI::remove_master (VCAMasterStrip* vms)
 414 {
 415         if (_session && _session->deletion_in_progress()) {
 416                 /* its all being taken care of */
 417                 return;
 418         }
 419
 420         TreeModel::Children rows = track_model->children();
 421         TreeModel::Children::iterator ri;
 422
 423         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 424                 if ((*ri)[track_columns.vca] == vms) {
 425                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 426                         track_model->erase (ri);
 427                         break;
 428                 }
 429         }
 430 }
 431
 432 bool
 433 Mixer_UI::masters_scroller_button_release (GdkEventButton* ev)
 434 {
 435         using namespace Menu_Helpers;
 436
 437         if (Keyboard::is_context_menu_event (ev)) {
 438                 ARDOUR_UI::instance()->add_route ();
 439                 return true;
 440         }
 441
 442         return false;
 443 }
 444
 445 void
 446 Mixer_UI::add_strips (RouteList& routes)
 447 {
 448         Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 449         uint32_t nroutes = 0;
 450
 451         for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
 452                 boost::shared_ptr<Route> r = (*it)[track_columns.route];
 453
 454                 if (!r) {
 455                         continue;
 456                 }
 457
 458                 nroutes++;
 459
 460                 if (r->presentation_info().group_order() == (routes.front()->presentation_info().group_order() + routes.size())) {
 461                         insert_iter = it;
 462                         break;
 463                 }
 464         }
 465
 466         if (nroutes) {
 467                 _selection.clear_routes ();
 468         }
 469
 470         MixerStrip* strip;
 471
 472         try {
 473                 no_track_list_redisplay = true;
 474                 track_display.set_model (Glib::RefPtr<ListStore>());
 475
 476                 for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
 477                         boost::shared_ptr<Route> route = (*x);
 478
 479                         if (route->is_auditioner()) {
 480                                 continue;
 481                         }
 482
 483                         if (route->is_monitor()) {
 484
 485                                 if (!_monitor_section) {
 486                                         _monitor_section = new MonitorSection (_session);
 487
 488                                         XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 489                                         if (mnode) {
 490                                                 _monitor_section->tearoff().set_state (*mnode);
 491                                         }
 492                                 }
 493
 494                                 out_packer.pack_end (_monitor_section->tearoff(), false, false);
 495                                 _monitor_section->set_session (_session);
 496                                 _monitor_section->tearoff().show_all ();
 497
 498                                 _monitor_section->tearoff().Detach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_detached));
 499                                 _monitor_section->tearoff().Attach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_attached));
 500
 501                                 monitor_section_attached ();
 502
 503                                 route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 504
 505                                 /* no regular strip shown for control out */
 506
 507                                 continue;
 508                         }
 509
 510                         strip = new MixerStrip (*this, _session, route);
 511                         strips.push_back (strip);
 512
 513                         UIConfiguration::instance().get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 514
 515                         if (strip->width_owner() != strip) {
 516                                 strip->set_width_enum (_strip_width, this);
 517                         }
 518
 519                         show_strip (strip);
 520
 521                         TreeModel::Row row = *(track_model->insert(insert_iter));
 522                         row[track_columns.text] = route->name();
 523                         row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
 524                         row[track_columns.route] = route;
 525                         row[track_columns.strip] = strip;
 526                         row[track_columns.vca] = 0;
 527
 528                         if (nroutes != 0) {
 529                                 _selection.add (strip);
 530                         }
 531
 532                         route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
 533
 534                         strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 535                         strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 536                 }
 537
 538         } catch (const std::exception& e) {
 539                 error << string_compose (_("Error adding GUI elements for new tracks/busses %1"), e.what()) << endmsg;
 540         }
 541
 542         no_track_list_redisplay = false;
 543         track_display.set_model (track_model);
 544
 545         sync_presentation_info_from_treeview ();
 546         redisplay_track_list ();
 547 }
 548
 549 void
 550 Mixer_UI::deselect_all_strip_processors ()
 551 {
 552         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 553                 (*i)->deselect_all_processors();
 554         }
 555 }
 556
 557 void
 558 Mixer_UI::select_strip (MixerStrip& ms, bool add)
 559 {
 560         if (add) {
 561                 _selection.add (&ms);
 562         } else {
 563                 _selection.set (&ms);
 564         }
 565 }
 566
 567 void
 568 Mixer_UI::select_none ()
 569 {
 570         _selection.clear_routes();
 571         deselect_all_strip_processors();
 572 }
 573
 574 void
 575 Mixer_UI::delete_processors ()
 576 {
 577         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 578                 (*i)->delete_processors();
 579         }
 580 }
 581
 582
 583 void
 584 Mixer_UI::remove_strip (MixerStrip* strip)
 585 {
 586         if (_session && _session->deletion_in_progress()) {
 587                 /* its all being taken care of */
 588                 return;
 589         }
 590
 591         TreeModel::Children rows = track_model->children();
 592         TreeModel::Children::iterator ri;
 593         list<MixerStrip *>::iterator i;
 594
 595         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 596                 strips.erase (i);
 597         }
 598
 599         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 600                 if ((*ri)[track_columns.strip] == strip) {
 601                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 602                         track_model->erase (ri);
 603                         break;
 604                 }
 605         }
 606 }
 607
 608 void
 609 Mixer_UI::sync_presentation_info_from_treeview ()
 610 {
 611         if (ignore_reorder || !_session || _session->deletion_in_progress() || (Config->get_remote_model() != MixerOrdered)) {
 612                 return;
 613         }
 614
 615         TreeModel::Children rows = track_model->children();
 616
 617         if (rows.empty()) {
 618                 return;
 619         }
 620
 621         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync presentation info from treeview\n");
 622
 623         TreeModel::Children::iterator ri;
 624         bool change = false;
 625         uint32_t order = 0;
 626
 627         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 628                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 629                 bool visible = (*ri)[track_columns.visible];
 630
 631
 632                 if (!route) {
 633                         continue;
 634                 }
 635
 636                 if (route->presentation_info().special()) {
 637                         continue;
 638                 }
 639
 640                 if (!visible) {
 641                         route->presentation_info().set_flag (PresentationInfo::Hidden);
 642                 } else {
 643                         route->presentation_info().unset_flag (PresentationInfo::Hidden);
 644                 }
 645
 646                 if (order != route->presentation_info().group_order()) {
 647                         route->set_presentation_group_order_explicit (order);
 648                         change = true;
 649                 }
 650
 651                 ++order;
 652         }
 653
 654         if (change) {
 655                 DEBUG_TRACE (DEBUG::OrderKeys, "... notify PI change from mixer GUI\n");
 656                 _session->notify_presentation_info_change ();
 657         }
 658 }
 659
 660 void
 661 Mixer_UI::sync_treeview_from_presentation_info ()
 662 {
 663         if (!_session || _session->deletion_in_progress()) {
 664                 return;
 665         }
 666
 667         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from presentation info.\n");
 668
 669         /* we could get here after either a change in the Mixer or Editor sort
 670          * order, but either way, the mixer order keys reflect the intended
 671          * order for the GUI, so reorder the treeview model to match it.
 672          */
 673
 674         vector<int> neworder;
 675         TreeModel::Children rows = track_model->children();
 676         uint32_t old_order = 0;
 677         bool changed = false;
 678
 679         if (rows.empty()) {
 680                 return;
 681         }
 682
 683         OrderingKeys sorted;
 684         uint32_t vca_cnt = 0;
 685         uint32_t max_route_order_key = 0;
 686
 687         /* count number of Routes in track_model (there may be some odd reason
 688            why this is not the same as the number in the session, but here we
 689            care about the track model.
 690         */
 691
 692         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri) {
 693                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 694                 if (route) {
 695                         max_route_order_key = max (route->presentation_info().group_order(), max_route_order_key);
 696                 }
 697         }
 698
 699         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 700                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 701                 if (!route) {
 702                         /* VCAs need to sort after all routes. We don't display
 703                          * them in the same place (March 2016), but we don't
 704                          * want them intermixed in the track_model
 705                          */
 706                         sorted.push_back (OrderKeys (old_order, max_route_order_key + ++vca_cnt));
 707                 } else {
 708                         sorted.push_back (OrderKeys (old_order, route->presentation_info().group_order()));
 709                 }
 710         }
 711
 712         SortByNewDisplayOrder cmp;
 713
 714         sort (sorted.begin(), sorted.end(), cmp);
 715         neworder.assign (sorted.size(), 0);
 716
 717         uint32_t n = 0;
 718
 719         for (OrderingKeys::iterator sr = sorted.begin(); sr != sorted.end(); ++sr, ++n) {
 720
 721                 neworder[n] = sr->old_display_order;
 722
 723                 if (sr->old_display_order != n) {
 724                         changed = true;
 725                 }
 726         }
 727
 728         if (changed) {
 729                 Unwinder<bool> uw (ignore_reorder, true);
 730                 track_model->reorder (neworder);
 731         }
 732
 733         redisplay_track_list ();
 734 }
 735
 736 void
 737 Mixer_UI::follow_editor_selection ()
 738 {
 739         if (_following_editor_selection) {
 740                 return;
 741         }
 742
 743         _following_editor_selection = true;
 744         _selection.block_routes_changed (true);
 745
 746         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 747
 748         _selection.clear_routes ();
 749
 750         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 751                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
 752                 if (rtav) {
 753                         MixerStrip* ms = strip_by_route (rtav->route());
 754                         if (ms) {
 755                                 _selection.add (ms);
 756                         }
 757                 }
 758         }
 759
 760         _following_editor_selection = false;
 761         _selection.block_routes_changed (false);
 762 }
 763
 764
 765 MixerStrip*
 766 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 767 {
 768         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 769                 if ((*i)->route() == r) {
 770                         return (*i);
 771                 }
 772         }
 773
 774         return 0;
 775 }
 776
 777 bool
 778 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 779 {
 780         if (ev->button == 1) {
 781                 if (_selection.selected (strip)) {
 782                         /* primary-click: toggle selection state of strip */
 783                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 784                                 _selection.remove (strip);
 785                         } else if (_selection.routes.size() > 1) {
 786                                 /* de-select others */
 787                                 _selection.set (strip);
 788                         }
 789                 } else {
 790                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 791                                 _selection.add (strip);
 792                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 793
 794                                 if (!_selection.selected(strip)) {
 795
 796                                         /* extend selection */
 797
 798                                         vector<MixerStrip*> tmp;
 799                                         bool accumulate = false;
 800                                         bool found_another = false;
 801
 802                                         tmp.push_back (strip);
 803
 804                                         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 805                                                 if ((*i) == strip) {
 806                                                         /* hit clicked strip, start accumulating till we hit the first
 807                                                            selected strip
 808                                                         */
 809                                                         if (accumulate) {
 810                                                                 /* done */
 811                                                                 break;
 812                                                         } else {
 813                                                                 accumulate = true;
 814                                                         }
 815                                                 } else if (_selection.selected (*i)) {
 816                                                         /* hit selected strip. if currently accumulating others,
 817                                                            we're done. if not accumulating others, start doing so.
 818                                                         */
 819                                                         found_another = true;
 820                                                         if (accumulate) {
 821                                                                 /* done */
 822                                                                 break;
 823                                                         } else {
 824                                                                 accumulate = true;
 825                                                         }
 826                                                 } else {
 827                                                         if (accumulate) {
 828                                                                 tmp.push_back (*i);
 829                                                         }
 830                                                 }
 831                                         }
 832
 833                                         if (found_another) {
 834                                                 for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 835                                                         _selection.add (*i);
 836                                                 }
 837                                         } else
 838                                                 _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
 839                                 }
 840
 841                         } else {
 842                                 _selection.set (strip);
 843                         }
 844                 }
 845         }
 846
 847         return true;
 848 }
 849
 850 void
 851 Mixer_UI::set_session (Session* sess)
 852 {
 853         SessionHandlePtr::set_session (sess);
 854
 855         if (_plugin_selector) {
 856                 _plugin_selector->set_session (_session);
 857         }
 858
 859         _group_tabs->set_session (sess);
 860
 861         if (!_session) {
 862                 return;
 863         }
 864
 865         refill_favorite_plugins();
 866
 867         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 868         set_state (*node, 0);
 869
 870         update_title ();
 871
 872         initial_track_display ();
 873
 874         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
 875         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 876         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 877         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 878         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 879         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 880         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 881
 882         _session->vca_manager().VCAAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_masters, this, _1), gui_context());
 883
 884         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 885
 886         route_groups_changed ();
 887
 888         if (_visible) {
 889                 show_window();
 890         }
 891         start_updating ();
 892 }
 893
 894 void
 895 Mixer_UI::session_going_away ()
 896 {
 897         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 898
 899         _in_group_rebuild_or_clear = true;
 900         group_model->clear ();
 901         _in_group_rebuild_or_clear = false;
 902
 903         _selection.clear ();
 904         track_model->clear ();
 905
 906         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 907                 delete (*i);
 908         }
 909
 910         if (_monitor_section) {
 911                 _monitor_section->tearoff().hide_visible ();
 912         }
 913
 914         monitor_section_detached ();
 915
 916         strips.clear ();
 917
 918         stop_updating ();
 919
 920         SessionHandlePtr::session_going_away ();
 921
 922         _session = 0;
 923         update_title ();
 924 }
 925
 926 void
 927 Mixer_UI::track_visibility_changed (std::string const & path)
 928 {
 929         if (_session && _session->deletion_in_progress()) {
 930                 return;
 931         }
 932
 933         TreeIter iter;
 934
 935         if ((iter = track_model->get_iter (path))) {
 936                 MixerStrip* strip = (*iter)[track_columns.strip];
 937                 if (strip) {
 938                         bool visible = (*iter)[track_columns.visible];
 939
 940                         if (strip->set_marked_for_display (!visible)) {
 941                                 update_track_visibility ();
 942                         }
 943                 }
 944         }
 945 }
 946
 947 void
 948 Mixer_UI::update_track_visibility ()
 949 {
 950         TreeModel::Children rows = track_model->children();
 951         TreeModel::Children::iterator i;
 952
 953         {
 954                 Unwinder<bool> uw (no_track_list_redisplay, true);
 955
 956                 for (i = rows.begin(); i != rows.end(); ++i) {
 957                         MixerStrip *strip = (*i)[track_columns.strip];
 958                         if (strip) {
 959                                 (*i)[track_columns.visible] = strip->marked_for_display ();
 960                         }
 961                 }
 962
 963                 /* force presentation catch up with visibility changes
 964                  */
 965
 966                 sync_presentation_info_from_treeview ();
 967         }
 968
 969         redisplay_track_list ();
 970 }
 971
 972 void
 973 Mixer_UI::show_strip (MixerStrip* ms)
 974 {
 975         TreeModel::Children rows = track_model->children();
 976         TreeModel::Children::iterator i;
 977
 978         for (i = rows.begin(); i != rows.end(); ++i) {
 979
 980                 MixerStrip* strip = (*i)[track_columns.strip];
 981                 if (strip == ms) {
 982                         (*i)[track_columns.visible] = true;
 983                         redisplay_track_list ();
 984                         break;
 985                 }
 986         }
 987 }
 988
 989 void
 990 Mixer_UI::hide_strip (MixerStrip* ms)
 991 {
 992         TreeModel::Children rows = track_model->children();
 993         TreeModel::Children::iterator i;
 994
 995         for (i = rows.begin(); i != rows.end(); ++i) {
 996
 997                 MixerStrip* strip = (*i)[track_columns.strip];
 998                 if (strip == ms) {
 999                         (*i)[track_columns.visible] = false;
1000                         redisplay_track_list ();
1001                         break;
1002                 }
1003         }
1004 }
1005
1006 gint
1007 Mixer_UI::start_updating ()
1008 {
1009     fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
1010     return 0;
1011 }
1012
1013 gint
1014 Mixer_UI::stop_updating ()
1015 {
1016     fast_screen_update_connection.disconnect();
1017     return 0;
1018 }
1019
1020 void
1021 Mixer_UI::fast_update_strips ()
1022 {
1023         if (_content.is_mapped () && _session) {
1024                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1025                         (*i)->fast_update ();
1026                 }
1027         }
1028 }
1029
1030 void
1031 Mixer_UI::set_all_strips_visibility (bool yn)
1032 {
1033         TreeModel::Children rows = track_model->children();
1034         TreeModel::Children::iterator i;
1035
1036         {
1037                 Unwinder<bool> uw (no_track_list_redisplay, true);
1038
1039                 for (i = rows.begin(); i != rows.end(); ++i) {
1040
1041                         TreeModel::Row row = (*i);
1042                         MixerStrip* strip = row[track_columns.strip];
1043
1044                         if (!strip) {
1045                                 continue;
1046                         }
1047
1048                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1049                                 continue;
1050                         }
1051
1052                         (*i)[track_columns.visible] = yn;
1053                 }
1054         }
1055
1056         redisplay_track_list ();
1057 }
1058
1059
1060 void
1061 Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
1062 {
1063         TreeModel::Children rows = track_model->children();
1064         TreeModel::Children::iterator i;
1065
1066         {
1067                 Unwinder<bool> uw (no_track_list_redisplay, true);
1068
1069                 for (i = rows.begin(); i != rows.end(); ++i) {
1070                         TreeModel::Row row = (*i);
1071                         MixerStrip* strip = row[track_columns.strip];
1072
1073                         if (!strip) {
1074                                 continue;
1075                         }
1076
1077                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1078                                 continue;
1079                         }
1080
1081                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
1082                         boost::shared_ptr<MidiTrack> mt = strip->midi_track();
1083
1084                         switch (tracks) {
1085                         case 0:
1086                                 (*i)[track_columns.visible] = yn;
1087                                 break;
1088
1089                         case 1:
1090                                 if (at) { /* track */
1091                                         (*i)[track_columns.visible] = yn;
1092                                 }
1093                                 break;
1094
1095                         case 2:
1096                                 if (!at && !mt) { /* bus */
1097                                         (*i)[track_columns.visible] = yn;
1098                                 }
1099                                 break;
1100
1101                         case 3:
1102                                 if (mt) { /* midi-track */
1103                                         (*i)[track_columns.visible] = yn;
1104                                 }
1105                                 break;
1106                         }
1107                 }
1108         }
1109
1110         redisplay_track_list ();
1111 }
1112
1113 void
1114 Mixer_UI::hide_all_routes ()
1115 {
1116         set_all_strips_visibility (false);
1117 }
1118
1119 void
1120 Mixer_UI::show_all_routes ()
1121 {
1122         set_all_strips_visibility (true);
1123 }
1124
1125 void
1126 Mixer_UI::show_all_audiobus ()
1127 {
1128         set_all_audio_midi_visibility (2, true);
1129 }
1130 void
1131 Mixer_UI::hide_all_audiobus ()
1132 {
1133         set_all_audio_midi_visibility (2, false);
1134 }
1135
1136 void
1137 Mixer_UI::show_all_audiotracks()
1138 {
1139         set_all_audio_midi_visibility (1, true);
1140 }
1141 void
1142 Mixer_UI::hide_all_audiotracks ()
1143 {
1144         set_all_audio_midi_visibility (1, false);
1145 }
1146
1147 void
1148 Mixer_UI::show_all_miditracks()
1149 {
1150         set_all_audio_midi_visibility (3, true);
1151 }
1152 void
1153 Mixer_UI::hide_all_miditracks ()
1154 {
1155         set_all_audio_midi_visibility (3, false);
1156 }
1157
1158
1159 void
1160 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1161 {
1162         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1163         sync_presentation_info_from_treeview ();
1164 }
1165
1166 void
1167 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1168 {
1169         /* this happens as the second step of a DnD within the treeview as well
1170            as when a row/route is actually deleted.
1171
1172            if it was a deletion then we have to force a redisplay because
1173            order keys may not have changed.
1174         */
1175
1176         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1177         sync_presentation_info_from_treeview ();
1178
1179         if (_route_deletion_in_progress) {
1180                 redisplay_track_list ();
1181         }
1182 }
1183
1184 void
1185 Mixer_UI::spill_redisplay (boost::shared_ptr<VCA> vca)
1186 {
1187         TreeModel::Children rows = track_model->children();
1188
1189         for (TreeModel::Children::iterator i = rows.begin(); i != rows.end(); ++i) {
1190
1191                 MixerStrip* strip = (*i)[track_columns.strip];
1192
1193                 if (!strip) {
1194                         /* we're in the middle of changing a row, don't worry */
1195                         continue;
1196                 }
1197
1198                 if (!strip->route()) {
1199                         /* non-route element */
1200                         continue;
1201                 }
1202
1203                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1204                         continue;
1205                 }
1206
1207                 if (strip->route()->slaved_to (vca)) {
1208
1209                         strip->set_gui_property ("visible", true);
1210
1211                         if (strip->packed()) {
1212                                 strip_packer.reorder_child (*strip, -1); /* put at end */
1213                         } else {
1214                                 strip_packer.pack_start (*strip, false, false);
1215                                 strip->set_packed (true);
1216                         }
1217
1218                 } else {
1219
1220                         strip->set_gui_property ("visible", false);
1221
1222                         if (strip->packed()) {
1223                                 strip_packer.remove (*strip);
1224                                 strip->set_packed (false);
1225                         }
1226                 }
1227         }
1228 }
1229
1230 void
1231 Mixer_UI::redisplay_track_list ()
1232 {
1233         if (no_track_list_redisplay) {
1234                 return;
1235         }
1236
1237         boost::shared_ptr<VCA> sv = spilled_vca.lock ();
1238
1239         if (sv) {
1240                 spill_redisplay (sv);
1241                 return;
1242         }
1243
1244         TreeModel::Children rows = track_model->children();
1245         TreeModel::Children::iterator i;
1246         uint32_t n_masters = 0;
1247
1248         container_clear (vca_packer);
1249         vca_packer.pack_end (vca_scroller_base, true, true);
1250
1251         for (i = rows.begin(); i != rows.end(); ++i) {
1252
1253                 VCAMasterStrip* vms = (*i)[track_columns.vca];
1254
1255                 if (vms) {
1256                         vca_packer.pack_start (*vms, false, false);
1257                         vms->show ();
1258                         n_masters++;
1259                         continue;
1260                 }
1261
1262                 MixerStrip* strip = (*i)[track_columns.strip];
1263
1264                 if (!strip) {
1265                         /* we're in the middle of changing a row, don't worry */
1266                         continue;
1267                 }
1268
1269                 bool const visible = (*i)[track_columns.visible];
1270
1271                 if (visible) {
1272                         strip->set_gui_property ("visible", true);
1273
1274                         if (strip->packed()) {
1275
1276                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1277                                         out_packer.reorder_child (*strip, -1);
1278
1279                                 } else {
1280                                         strip_packer.reorder_child (*strip, -1); /* put at end */
1281                                 }
1282
1283                         } else {
1284
1285                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1286                                         out_packer.pack_start (*strip, false, false);
1287                                 } else {
1288                                         strip_packer.pack_start (*strip, false, false);
1289                                 }
1290                                 strip->set_packed (true);
1291                         }
1292
1293                 } else {
1294
1295                         strip->set_gui_property ("visible", false);
1296
1297                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1298                                 /* do nothing, these cannot be hidden */
1299                         } else {
1300                                 if (strip->packed()) {
1301                                         strip_packer.remove (*strip);
1302                                         strip->set_packed (false);
1303                                 }
1304                         }
1305                 }
1306         }
1307
1308         /* update visibility of VCA assign buttons */
1309
1310         if (n_masters == 0) {
1311                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::remove_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1312                 vca_scroller.hide ();
1313         } else {
1314                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::add_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1315                 vca_scroller.show ();
1316         }
1317
1318         _group_tabs->set_dirty ();
1319 }
1320
1321 void
1322 Mixer_UI::strip_width_changed ()
1323 {
1324         _group_tabs->set_dirty ();
1325
1326 #ifdef __APPLE__
1327         TreeModel::Children rows = track_model->children();
1328         TreeModel::Children::iterator i;
1329         long order;
1330
1331         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1332                 MixerStrip* strip = (*i)[track_columns.strip];
1333
1334                 if (strip == 0) {
1335                         continue;
1336                 }
1337
1338                 bool visible = (*i)[track_columns.visible];
1339
1340                 if (visible) {
1341                         strip->queue_draw();
1342                 }
1343         }
1344 #endif
1345
1346 }
1347
1348 struct PresentationInfoRouteSorter
1349 {
1350         bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
1351                 return a->presentation_info().global_order () < b->presentation_info().global_order ();
1352         }
1353 };
1354
1355 void
1356 Mixer_UI::initial_track_display ()
1357 {
1358         boost::shared_ptr<RouteList> routes = _session->get_routes();
1359         RouteList copy (*routes);
1360         PresentationInfoRouteSorter sorter;
1361
1362         copy.sort (sorter);
1363
1364         {
1365                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1366                 Unwinder<bool> uw2 (ignore_reorder, true);
1367
1368                 track_model->clear ();
1369                 VCAList vcas = _session->vca_manager().vcas();
1370                 add_masters (vcas);
1371                 add_strips (copy);
1372         }
1373
1374         redisplay_track_list ();
1375 }
1376
1377 void
1378 Mixer_UI::show_track_list_menu ()
1379 {
1380         if (track_menu == 0) {
1381                 build_track_menu ();
1382         }
1383
1384         track_menu->popup (1, gtk_get_current_event_time());
1385 }
1386
1387 bool
1388 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1389 {
1390         if (Keyboard::is_context_menu_event (ev)) {
1391                 show_track_list_menu ();
1392                 return true;
1393         }
1394
1395         return false;
1396 }
1397
1398 void
1399 Mixer_UI::build_track_menu ()
1400 {
1401         using namespace Menu_Helpers;
1402         using namespace Gtk;
1403
1404         track_menu = new Menu;
1405         track_menu->set_name ("ArdourContextMenu");
1406         MenuList& items = track_menu->items();
1407
1408         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1409         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1410         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1411         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1412         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1413         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1414         items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
1415         items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
1416
1417 }
1418
1419 void
1420 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1421 {
1422         if (!what_changed.contains (ARDOUR::Properties::name)) {
1423                 return;
1424         }
1425
1426         ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1427
1428         TreeModel::Children rows = track_model->children();
1429         TreeModel::Children::iterator i;
1430
1431         for (i = rows.begin(); i != rows.end(); ++i) {
1432                 if ((*i)[track_columns.strip] == mx) {
1433                         (*i)[track_columns.text] = mx->route()->name();
1434                         return;
1435                 }
1436         }
1437
1438         error << _("track display list item for renamed strip not found!") << endmsg;
1439 }
1440
1441 bool
1442 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1443 {
1444         TreeModel::Path path;
1445         TreeViewColumn* column;
1446         int cellx;
1447         int celly;
1448
1449         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1450                 _group_tabs->get_menu(0)->popup (1, ev->time);
1451                 return true;
1452         }
1453
1454         TreeIter iter = group_model->get_iter (path);
1455         if (!iter) {
1456                 _group_tabs->get_menu(0)->popup (1, ev->time);
1457                 return true;
1458         }
1459
1460         RouteGroup* group = (*iter)[group_columns.group];
1461
1462         if (Keyboard::is_context_menu_event (ev)) {
1463                 _group_tabs->get_menu(group)->popup (1, ev->time);
1464                 return true;
1465         }
1466
1467         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1468         case 0:
1469                 if (Keyboard::is_edit_event (ev)) {
1470                         if (group) {
1471                                 // edit_route_group (group);
1472 #ifdef __APPLE__
1473                                 group_display.queue_draw();
1474 #endif
1475                                 return true;
1476                         }
1477                 }
1478                 break;
1479
1480         case 1:
1481         {
1482                 bool visible = (*iter)[group_columns.visible];
1483                 (*iter)[group_columns.visible] = !visible;
1484 #ifdef __APPLE__
1485                 group_display.queue_draw();
1486 #endif
1487                 return true;
1488         }
1489
1490         default:
1491                 break;
1492         }
1493
1494         return false;
1495  }
1496
1497 void
1498 Mixer_UI::activate_all_route_groups ()
1499 {
1500         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1501 }
1502
1503 void
1504 Mixer_UI::disable_all_route_groups ()
1505 {
1506         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1507 }
1508
1509 void
1510 Mixer_UI::route_groups_changed ()
1511 {
1512         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1513
1514         _in_group_rebuild_or_clear = true;
1515
1516         /* just rebuild the while thing */
1517
1518         group_model->clear ();
1519
1520 #if 0
1521         /* this is currently not used,
1522          * Mixer_UI::group_display_button_press() has a case for it,
1523          * and a commented edit_route_group() but that's n/a since 2011.
1524          *
1525          * This code is left as reminder that
1526          * row[group_columns.group] = 0 has special meaning.
1527          */
1528         {
1529                 TreeModel::Row row;
1530                 row = *(group_model->append());
1531                 row[group_columns.visible] = true;
1532                 row[group_columns.text] = (_("-all-"));
1533                 row[group_columns.group] = 0;
1534         }
1535 #endif
1536
1537         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1538
1539         _group_tabs->set_dirty ();
1540         _in_group_rebuild_or_clear = false;
1541 }
1542
1543 void
1544 Mixer_UI::new_route_group ()
1545 {
1546         RouteList rl;
1547
1548         _group_tabs->run_new_group_dialog (rl, false);
1549 }
1550
1551 void
1552 Mixer_UI::remove_selected_route_group ()
1553 {
1554         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1555         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1556
1557         if (rows.empty()) {
1558                 return;
1559         }
1560
1561         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1562         TreeIter iter;
1563
1564         /* selection mode is single, so rows.begin() is it */
1565
1566         if ((iter = group_model->get_iter (*i))) {
1567
1568                 RouteGroup* rg = (*iter)[group_columns.group];
1569
1570                 if (rg) {
1571                         _session->remove_route_group (*rg);
1572                 }
1573         }
1574 }
1575
1576 void
1577 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1578 {
1579         if (in_group_row_change) {
1580                 return;
1581         }
1582
1583         /* force an update of any mixer strips that are using this group,
1584            otherwise mix group names don't change in mixer strips
1585         */
1586
1587         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1588                 if ((*i)->route_group() == group) {
1589                         (*i)->route_group_changed();
1590                 }
1591         }
1592
1593         TreeModel::iterator i;
1594         TreeModel::Children rows = group_model->children();
1595         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1596
1597         in_group_row_change = true;
1598
1599         for (i = rows.begin(); i != rows.end(); ++i) {
1600                 if ((*i)[group_columns.group] == group) {
1601                         (*i)[group_columns.visible] = !group->is_hidden ();
1602                         (*i)[group_columns.text] = group->name ();
1603                         break;
1604                 }
1605         }
1606
1607         in_group_row_change = false;
1608
1609         if (change.contains (Properties::name)) {
1610                 _group_tabs->set_dirty ();
1611         }
1612
1613         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1614                 if ((*j)->route_group() == group) {
1615                         if (group->is_hidden ()) {
1616                                 hide_strip (*j);
1617                         } else {
1618                                 show_strip (*j);
1619                         }
1620                 }
1621         }
1622 }
1623
1624 void
1625 Mixer_UI::show_mixer_list (bool yn)
1626 {
1627         if (yn) {
1628                 list_vpacker.show ();
1629
1630                 //if user wants to show the pane, we should make sure that it is wide enough to be visible
1631                 int width = list_hpane.get_position();
1632                 if (width < 40) {
1633                         list_hpane.set_position(40);
1634                 }
1635         } else {
1636                 list_vpacker.hide ();
1637         }
1638
1639         _show_mixer_list = yn;
1640 }
1641
1642 void
1643 Mixer_UI::show_monitor_section (bool yn)
1644 {
1645         if (!monitor_section()) {
1646                 return;
1647         }
1648         if (monitor_section()->tearoff().torn_off()) {
1649                 return;
1650         }
1651
1652         if (yn) {
1653                 monitor_section()->tearoff().show();
1654         } else {
1655                 monitor_section()->tearoff().hide();
1656         }
1657 }
1658
1659 void
1660 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1661 {
1662         RouteGroup* group;
1663         TreeIter iter;
1664
1665         if ((iter = group_model->get_iter (path))) {
1666
1667                 if ((group = (*iter)[group_columns.group]) == 0) {
1668                         return;
1669                 }
1670
1671                 if (new_text != group->name()) {
1672                         group->set_name (new_text);
1673                 }
1674         }
1675 }
1676
1677 void
1678 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1679 {
1680         RouteGroup* group;
1681
1682         if (in_group_row_change) {
1683                 return;
1684         }
1685
1686         if ((group = (*iter)[group_columns.group]) == 0) {
1687                 return;
1688         }
1689
1690         std::string name = (*iter)[group_columns.text];
1691
1692         if (name != group->name()) {
1693                 group->set_name (name);
1694         }
1695
1696         bool hidden = !(*iter)[group_columns.visible];
1697
1698         if (hidden != group->is_hidden ()) {
1699                 group->set_hidden (hidden, this);
1700         }
1701 }
1702
1703 /** Called when a group model row is deleted, but also when the model is
1704  *  reordered by a user drag-and-drop; the latter is what we are
1705  *  interested in here.
1706  */
1707 void
1708 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1709 {
1710         if (_in_group_rebuild_or_clear) {
1711                 return;
1712         }
1713
1714         /* Re-write the session's route group list so that the new order is preserved */
1715
1716         list<RouteGroup*> new_list;
1717
1718         Gtk::TreeModel::Children children = group_model->children();
1719         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1720                 RouteGroup* g = (*i)[group_columns.group];
1721                 if (g) {
1722                         new_list.push_back (g);
1723                 }
1724         }
1725
1726         _session->reorder_route_groups (new_list);
1727 }
1728
1729
1730 void
1731 Mixer_UI::add_route_group (RouteGroup* group)
1732 {
1733         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1734         bool focus = false;
1735
1736         in_group_row_change = true;
1737
1738         TreeModel::Row row = *(group_model->append());
1739         row[group_columns.visible] = !group->is_hidden ();
1740         row[group_columns.group] = group;
1741         if (!group->name().empty()) {
1742                 row[group_columns.text] = group->name();
1743         } else {
1744                 row[group_columns.text] = _("unnamed");
1745                 focus = true;
1746         }
1747
1748         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1749
1750         if (focus) {
1751                 TreeViewColumn* col = group_display.get_column (0);
1752                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1753                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1754         }
1755
1756         _group_tabs->set_dirty ();
1757
1758         in_group_row_change = false;
1759 }
1760
1761 bool
1762 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1763 {
1764         using namespace Menu_Helpers;
1765
1766         if (Keyboard::is_context_menu_event (ev)) {
1767                 ARDOUR_UI::instance()->add_route ();
1768                 return true;
1769         }
1770
1771         return false;
1772 }
1773
1774 void
1775 Mixer_UI::scroller_drag_data_received (const Glib::RefPtr<Gdk::DragContext>& context, int x, int y, const Gtk::SelectionData& data, guint info, guint time)
1776 {
1777         printf ("Mixer_UI::scroller_drag_data_received\n");
1778         if (data.get_target() != "PluginFavoritePtr") {
1779                 context->drag_finish (false, false, time);
1780                 return;
1781         }
1782
1783         const void * d = data.get_data();
1784         const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>* tv = reinterpret_cast<const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>*>(d);
1785
1786         PluginPresetList nfos;
1787         TreeView* source;
1788         tv->get_object_drag_data (nfos, &source);
1789
1790         Route::ProcessorList pl;
1791         bool ok = false;
1792
1793         for (list<PluginPresetPtr>::const_iterator i = nfos.begin(); i != nfos.end(); ++i) {
1794                 PluginPresetPtr ppp = (*i);
1795                 PluginInfoPtr pip = ppp->_pip;
1796                 if (!pip->is_instrument ()) {
1797                         continue;
1798                 }
1799                 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);
1800                 ok = true;
1801         }
1802
1803         context->drag_finish (ok, false, time);
1804 }
1805
1806 void
1807 Mixer_UI::set_strip_width (Width w, bool save)
1808 {
1809         _strip_width = w;
1810
1811         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1812                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1813         }
1814 }
1815
1816
1817 struct PluginStateSorter {
1818 public:
1819         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
1820                 std::list<std::string>::const_iterator aiter = std::find(_user.begin(), _user.end(), (*a).unique_id);
1821                 std::list<std::string>::const_iterator biter = std::find(_user.begin(), _user.end(), (*b).unique_id);
1822                 if (aiter != _user.end() && biter != _user.end()) {
1823                         return std::distance (_user.begin(), aiter)  < std::distance (_user.begin(), biter);
1824                 }
1825                 if (aiter != _user.end()) {
1826                         return true;
1827                 }
1828                 if (biter != _user.end()) {
1829                         return false;
1830                 }
1831                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
1832         }
1833
1834         PluginStateSorter(std::list<std::string> user) : _user (user)  {}
1835 private:
1836         std::list<std::string> _user;
1837 };
1838
1839 int
1840 Mixer_UI::set_state (const XMLNode& node, int version)
1841 {
1842         XMLProperty const * prop;
1843
1844         Tabbable::set_state (node, version);
1845
1846         if ((prop = node.property ("narrow-strips"))) {
1847                 if (string_is_affirmative (prop->value())) {
1848                         set_strip_width (Narrow);
1849                 } else {
1850                         set_strip_width (Wide);
1851                 }
1852         }
1853
1854         if ((prop = node.property ("show-mixer"))) {
1855                 if (string_is_affirmative (prop->value())) {
1856                        _visible = true;
1857                 }
1858         }
1859
1860         if ((prop = node.property ("maximised"))) {
1861                 bool yn = string_is_affirmative (prop->value());
1862                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1863                 assert (act);
1864                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1865                 bool fs = tact && tact->get_active();
1866                 if (yn ^ fs) {
1867                         ActionManager::do_action ("Common", "ToggleMaximalMixer");
1868                 }
1869         }
1870
1871         if ((prop = node.property ("show-mixer-list"))) {
1872                 bool yn = string_is_affirmative (prop->value());
1873                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMixerList"));
1874                 assert (act);
1875                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1876
1877                 /* do it twice to force the change */
1878                 tact->set_active (!yn);
1879                 tact->set_active (yn);
1880         }
1881
1882
1883         XMLNode* plugin_order;
1884         if ((plugin_order = find_named_node (node, "PluginOrder")) != 0) {
1885                 store_current_favorite_order ();
1886                 std::list<string> order;
1887                 const XMLNodeList& kids = plugin_order->children("PluginInfo");
1888                 XMLNodeConstIterator i;
1889                 for (i = kids.begin(); i != kids.end(); ++i) {
1890                         if ((prop = (*i)->property ("unique-id"))) {
1891                                 std::string unique_id = prop->value();
1892                                 order.push_back (unique_id);
1893                                 if ((prop = (*i)->property ("expanded"))) {
1894                                         favorite_ui_state[unique_id] = string_is_affirmative (prop->value());
1895                                 }
1896                         }
1897                 }
1898                 PluginStateSorter cmp (order);
1899                 favorite_order.sort (cmp);
1900                 sync_treeview_from_favorite_order ();
1901         }
1902         return 0;
1903 }
1904
1905 XMLNode&
1906 Mixer_UI::get_state ()
1907 {
1908         XMLNode* node = new XMLNode (X_("Mixer"));
1909         char buf[128];
1910
1911         node->add_child_nocopy (Tabbable::get_state());
1912
1913         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (rhs_pane1, true));
1914         node->add_property(X_("mixer-rhs-pane1-pos"), string(buf));
1915         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (rhs_pane2, true));
1916         node->add_property(X_("mixer-rhs_pane2-pos"), string(buf));
1917         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (list_hpane, false));
1918         node->add_property(X_("mixer-list-hpane-pos"), string(buf));
1919         snprintf(buf,sizeof(buf), "%f", paned_position_as_fraction (inner_pane, false));
1920         node->add_property(X_("mixer-inner-pane-pos"), string(buf));
1921
1922         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1923         node->add_property ("show-mixer", _visible ? "yes" : "no");
1924         node->add_property ("show-mixer-list", _show_mixer_list ? "yes" : "no");
1925         node->add_property ("maximised", _maximised ? "yes" : "no");
1926
1927         store_current_favorite_order ();
1928         XMLNode* plugin_order = new XMLNode ("PluginOrder");
1929         int cnt = 0;
1930         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i, ++cnt) {
1931                 XMLNode* p = new XMLNode ("PluginInfo");
1932                 p->add_property ("sort", cnt);
1933                 p->add_property ("unique-id", (*i)->unique_id);
1934                 if (favorite_ui_state.find ((*i)->unique_id) != favorite_ui_state.end ()) {
1935                         p->add_property ("expanded", favorite_ui_state[(*i)->unique_id]);
1936                 }
1937                 plugin_order->add_child_nocopy (*p);
1938         }
1939         node->add_child_nocopy (*plugin_order);
1940
1941         return *node;
1942 }
1943
1944 void
1945 Mixer_UI::pane_allocation_handler (Allocation& allocation, Gtk::Paned* which)
1946 {
1947         float pos;
1948         XMLProperty* prop = 0;
1949         XMLNode* geometry = ARDOUR_UI::instance()->mixer_settings();
1950         int height = default_height;
1951         static bool done[4] = { false, false, false, false };
1952
1953         /* Gtk::Paned behaves very oddly and rather undesirably. Setting the
1954          * position is a crapshoot if you time it incorrectly with the overall
1955          * sizing of the Paned. For example, if you might retrieve the size with
1956          * ::get_position() and then later call ::set_position() on a Paned at
1957          * a time when its allocation is different than it was when you retrieved
1958          * the position. The position will be interpreted as the size of the
1959          * first (top or left) child widget. If packing/size allocation later
1960          * resizes the Paned to a (final) smaller size, the position will be
1961          * used in ways that mean that the Paned ends up NOT in the same state
1962          * that it was in when you originally saved the position.
1963          *
1964          * Concrete example: Paned is 800 pixels wide, position is 400
1965          * (halfway).  Save position as 400. During program restart, set
1966          * position to 400, before Paned has been allocated any space. Paned
1967          * ends up initially sized to 1200 pixels.  Position is now 1/3 of the
1968          * way across/down.  Subsequent resizes will leave the position 1/3 of
1969          * the way across, rather than leaving it as a fixed pixel
1970          * position. Eventually, the Paned ends up 800 pixels wide/high again,
1971          * but the position is now 267, not 400.
1972          *
1973          * So ...
1974          *
1975          * We deal with this by using two strategies:
1976          *
1977          * 1) only set the position if the allocated size of the Paned is at
1978          * least as big as it needs to be for the position to make sense.
1979          *
1980          * 2) in recent versions of Ardour, save the position as a fraction,
1981          * and restore it using that fraction.
1982          *
1983          * So, we will only call ::set_position() AFTER the Paned is of a
1984          * sensible size, and then in addition, we will set the position in a
1985          * way that will be maintained as/when/if the Paned is resized.
1986          *
1987          * Once we've called ::set_position() on a Paned, we don't do it
1988          * again.
1989          */
1990
1991         if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
1992
1993                 if (done[0]) {
1994                         return;
1995                 }
1996
1997                 if (!geometry || (prop = geometry->property("mixer-rhs-pane1-pos")) == 0) {
1998                         pos = height / 3;
1999                 } else {
2000                         pos = atof (prop->value());
2001                 }
2002
2003                 if (pos > 1.0f) {
2004                         /* older versions of Ardour stored absolute position */
2005                         if ((done[0] = (allocation.get_height() > pos))) {
2006                                 rhs_pane1.set_position (pos);
2007                         }
2008                 } else {
2009                         if ((done[0] = (allocation.get_height() > 1.0/pos))) {
2010                                 paned_set_position_as_fraction (rhs_pane1, pos, true);
2011                         }
2012                 }
2013         }
2014
2015         if (which == static_cast<Gtk::Paned*> (&rhs_pane2)) {
2016
2017                 if (done[1]) {
2018                         return;
2019                 }
2020
2021                 if (!geometry || (prop = geometry->property("mixer-rhs-pane2-pos")) == 0) {
2022                         pos = 2 * height / 3;
2023                 } else {
2024                         pos = atof (prop->value());
2025                 }
2026
2027                 if (pos > 1.0f) {
2028                         /* older versions of Ardour stored absolute position */
2029                         if ((done[1] = (allocation.get_height() > pos))) {
2030                                 rhs_pane2.set_position (pos);
2031                         }
2032                 } else {
2033                         if ((done[1] = (allocation.get_height() > 1.0/pos))) {
2034                                 paned_set_position_as_fraction (rhs_pane2, pos, true);
2035                         }
2036                 }
2037         }
2038
2039         if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
2040
2041                 if (done[2]) {
2042                         return;
2043                 }
2044
2045                 if (!geometry || (prop = geometry->property("mixer-list-hpane-pos")) == 0) {
2046                         pos = std::max ((float)100, rintf ((float) 125 * UIConfiguration::instance().get_ui_scale()));
2047                 } else {
2048                         pos = max (0.1, atof (prop->value ()));
2049                 }
2050
2051                 if (pos > 1.0f) {
2052                         if ((done[2] = (allocation.get_width() > pos))) {
2053                                 list_hpane.set_position (pos);
2054                         }
2055                 } else {
2056                         if ((done[2] = (allocation.get_width() > 1.0/pos))) {
2057                                 paned_set_position_as_fraction (list_hpane, pos, false);
2058                         }
2059                 }
2060         }
2061
2062         if (which == static_cast<Gtk::Paned*> (&inner_pane)) {
2063
2064                 if (done[3]) {
2065                         return;
2066                 }
2067
2068                 if (!geometry || (prop = geometry->property("mixer-inner-pane-pos")) == 0) {
2069                         pos = std::max ((float)100, rintf ((float) 125 * UIConfiguration::instance().get_ui_scale()));
2070                 } else {
2071                         pos = max (0.1, atof (prop->value ()));
2072                 }
2073
2074                 if (pos > 1.0f) {
2075                         /* older versions of Ardour stored absolute position */
2076                         if ((done[3] = (allocation.get_width() > pos))) {
2077                                 inner_pane.set_position (pos);
2078                         }
2079                 } else {
2080                         if ((done[3] = (allocation.get_width() > 1.0/pos))) {
2081                                 paned_set_position_as_fraction (inner_pane, pos, false);
2082                         }
2083                 }
2084         }
2085 }
2086
2087 void
2088 Mixer_UI::scroll_left ()
2089 {
2090         if (!scroller.get_hscrollbar()) return;
2091         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2092         /* stupid GTK: can't rely on clamping across versions */
2093         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
2094 }
2095
2096 void
2097 Mixer_UI::scroll_right ()
2098 {
2099         if (!scroller.get_hscrollbar()) return;
2100         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2101         /* stupid GTK: can't rely on clamping across versions */
2102         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
2103 }
2104
2105 bool
2106 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
2107 {
2108         switch (ev->direction) {
2109         case GDK_SCROLL_LEFT:
2110                 scroll_left ();
2111                 return true;
2112         case GDK_SCROLL_UP:
2113                 if (ev->state & Keyboard::TertiaryModifier) {
2114                         scroll_left ();
2115                         return true;
2116                 }
2117                 return false;
2118
2119         case GDK_SCROLL_RIGHT:
2120                 scroll_right ();
2121                 return true;
2122
2123         case GDK_SCROLL_DOWN:
2124                 if (ev->state & Keyboard::TertiaryModifier) {
2125                         scroll_right ();
2126                         return true;
2127                 }
2128                 return false;
2129         }
2130
2131         return false;
2132 }
2133
2134
2135 void
2136 Mixer_UI::parameter_changed (string const & p)
2137 {
2138         if (p == "show-group-tabs") {
2139                 bool const s = _session->config.get_show_group_tabs ();
2140                 if (s) {
2141                         _group_tabs->show ();
2142                 } else {
2143                         _group_tabs->hide ();
2144                 }
2145         } else if (p == "default-narrow_ms") {
2146                 bool const s = UIConfiguration::instance().get_default_narrow_ms ();
2147                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2148                         (*i)->set_width_enum (s ? Narrow : Wide, this);
2149                 }
2150         } else if (p == "use-monitor-bus") {
2151                 if (_session && !_session->monitor_out()) {
2152                         monitor_section_detached ();
2153                 }
2154         }
2155 }
2156
2157 void
2158 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
2159 {
2160         g->set_active (a, this);
2161 }
2162
2163 PluginSelector*
2164 Mixer_UI::plugin_selector()
2165 {
2166 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
2167         if (!_plugin_selector)
2168                 _plugin_selector = new PluginSelector (PluginManager::instance());
2169 #endif
2170
2171         return _plugin_selector;
2172 }
2173
2174 void
2175 Mixer_UI::setup_track_display ()
2176 {
2177         track_model = ListStore::create (track_columns);
2178         track_display.set_model (track_model);
2179         track_display.append_column (_("Strips"), track_columns.text);
2180         track_display.append_column (_("Show"), track_columns.visible);
2181         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
2182         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
2183         track_display.get_column (0)->set_expand(true);
2184         track_display.get_column (1)->set_expand(false);
2185         track_display.get_column (0)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
2186         track_display.set_name (X_("EditGroupList"));
2187         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
2188         track_display.set_reorderable (true);
2189         track_display.set_headers_visible (true);
2190         track_display.set_can_focus(false);
2191
2192         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
2193         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
2194
2195         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
2196         track_list_visible_cell->property_activatable() = true;
2197         track_list_visible_cell->property_radio() = false;
2198         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
2199
2200         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
2201
2202         track_display_scroller.add (track_display);
2203         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
2204
2205         VBox* v = manage (new VBox);
2206         v->show ();
2207         v->pack_start (track_display_scroller, true, true);
2208
2209         Button* b = manage (new Button);
2210         b->show ();
2211         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
2212         w->show ();
2213         b->add (*w);
2214
2215         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
2216
2217         v->pack_start (*b, false, false);
2218
2219         track_display_frame.set_name("BaseFrame");
2220         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
2221         track_display_frame.add (*v);
2222
2223         track_display_scroller.show();
2224         track_display_frame.show();
2225         track_display.show();
2226 }
2227
2228 void
2229 Mixer_UI::new_track_or_bus ()
2230 {
2231         ARDOUR_UI::instance()->add_route ();
2232 }
2233
2234 void
2235 Mixer_UI::update_title ()
2236 {
2237         if (!own_window()) {
2238                 return;
2239         }
2240
2241         if (_session) {
2242                 string n;
2243
2244                 if (_session->snap_name() != _session->name()) {
2245                         n = _session->snap_name ();
2246                 } else {
2247                         n = _session->name ();
2248                 }
2249
2250                 if (_session->dirty ()) {
2251                         n = "*" + n;
2252                 }
2253
2254                 WindowTitle title (n);
2255                 title += S_("Window|Mixer");
2256                 title += Glib::get_application_name ();
2257                 own_window()->set_title (title.get_string());
2258
2259         } else {
2260
2261                 WindowTitle title (S_("Window|Mixer"));
2262                 title += Glib::get_application_name ();
2263                 own_window()->set_title (title.get_string());
2264         }
2265 }
2266
2267 MixerStrip*
2268 Mixer_UI::strip_by_x (int x)
2269 {
2270         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2271                 int x1, x2, y;
2272
2273                 (*i)->translate_coordinates (_content, 0, 0, x1, y);
2274                 x2 = x1 + (*i)->get_width();
2275
2276                 if (x >= x1 && x <= x2) {
2277                         return (*i);
2278                 }
2279         }
2280
2281         return 0;
2282 }
2283
2284 void
2285 Mixer_UI::set_route_targets_for_operation ()
2286 {
2287         _route_targets.clear ();
2288
2289         if (!_selection.empty()) {
2290                 _route_targets = _selection.routes;
2291                 return;
2292         }
2293
2294 //  removed "implicit" selections of strips, after discussion on IRC
2295
2296 }
2297
2298 void
2299 Mixer_UI::monitor_section_going_away ()
2300 {
2301         if (_monitor_section) {
2302                 monitor_section_detached ();
2303                 out_packer.remove (_monitor_section->tearoff());
2304                 _monitor_section->set_session (0);
2305                 delete _monitor_section;
2306                 _monitor_section = 0;
2307         }
2308 }
2309
2310 void
2311 Mixer_UI::toggle_midi_input_active (bool flip_others)
2312 {
2313         boost::shared_ptr<RouteList> rl (new RouteList);
2314         bool onoff = false;
2315
2316         set_route_targets_for_operation ();
2317
2318         for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
2319                 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
2320
2321                 if (mt) {
2322                         rl->push_back ((*r)->route());
2323                         onoff = !mt->input_active();
2324                 }
2325         }
2326
2327         _session->set_exclusive_input_active (rl, onoff, flip_others);
2328 }
2329
2330 void
2331 Mixer_UI::maximise_mixer_space ()
2332 {
2333         if (!own_window()) {
2334                 return;
2335         }
2336
2337         if (_maximised) {
2338                 return;
2339         }
2340
2341         _window->fullscreen ();
2342         _maximised = true;
2343 }
2344
2345 void
2346 Mixer_UI::restore_mixer_space ()
2347 {
2348         if (!own_window()) {
2349                 return;
2350         }
2351
2352         if (!_maximised) {
2353                 return;
2354         }
2355
2356         own_window()->unfullscreen();
2357         _maximised = false;
2358 }
2359
2360 void
2361 Mixer_UI::monitor_section_attached ()
2362 {
2363         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2364         Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
2365         act->set_sensitive (true);
2366         tact->set_active ();
2367 }
2368
2369 void
2370 Mixer_UI::monitor_section_detached ()
2371 {
2372         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2373         act->set_sensitive (false);
2374 }
2375
2376 void
2377 Mixer_UI::store_current_favorite_order ()
2378 {
2379         typedef Gtk::TreeModel::Children type_children;
2380         type_children children = favorite_plugins_model->children();
2381         favorite_order.clear();
2382         for(type_children::iterator iter = children.begin(); iter != children.end(); ++iter)
2383         {
2384                 Gtk::TreeModel::Row row = *iter;
2385                 ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2386                 favorite_order.push_back (ppp->_pip);
2387                 std::string name = row[favorite_plugins_columns.name];
2388                 favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2389         }
2390 }
2391
2392 void
2393 Mixer_UI::save_favorite_ui_state (const TreeModel::iterator& iter, const TreeModel::Path& path)
2394 {
2395         Gtk::TreeModel::Row row = *iter;
2396         ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2397         assert (ppp);
2398         favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2399 }
2400
2401 void
2402 Mixer_UI::refiller (PluginInfoList& result, const PluginInfoList& plugs)
2403 {
2404         PluginManager& manager (PluginManager::instance());
2405         for (PluginInfoList::const_iterator i = plugs.begin(); i != plugs.end(); ++i) {
2406                 if (manager.get_status (*i) != PluginManager::Favorite) {
2407                         continue;
2408                 }
2409                 result.push_back (*i);
2410         }
2411 }
2412
2413 struct PluginCustomSorter {
2414 public:
2415         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
2416                 PluginInfoList::const_iterator aiter = _user.begin();
2417                 PluginInfoList::const_iterator biter = _user.begin();
2418                 while (aiter != _user.end()) { if ((*aiter)->unique_id == a->unique_id) { break; } ++aiter; }
2419                 while (biter != _user.end()) { if ((*biter)->unique_id == b->unique_id) { break; } ++biter; }
2420
2421                 if (aiter != _user.end() && biter != _user.end()) {
2422                         return std::distance (_user.begin(), aiter) < std::distance (_user.begin(), biter);
2423                 }
2424                 if (aiter != _user.end()) {
2425                         return true;
2426                 }
2427                 if (biter != _user.end()) {
2428                         return false;
2429                 }
2430                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
2431         }
2432         PluginCustomSorter(PluginInfoList user) : _user (user)  {}
2433 private:
2434         PluginInfoList _user;
2435 };
2436
2437 void
2438 Mixer_UI::refill_favorite_plugins ()
2439 {
2440         PluginInfoList plugs;
2441         PluginManager& mgr (PluginManager::instance());
2442
2443 #ifdef LV2_SUPPORT
2444         refiller (plugs, mgr.lv2_plugin_info ());
2445 #endif
2446 #ifdef WINDOWS_VST_SUPPORT
2447         refiller (plugs, mgr.windows_vst_plugin_info ());
2448 #endif
2449 #ifdef LXVST_SUPPORT
2450         refiller (plugs, mgr.lxvst_plugin_info ());
2451 #endif
2452 #ifdef AUDIOUNIT_SUPPORT
2453         refiller (plugs, mgr.au_plugin_info ());
2454 #endif
2455         refiller (plugs, mgr.ladspa_plugin_info ());
2456         refiller (plugs, mgr.lua_plugin_info ());
2457
2458         store_current_favorite_order ();
2459
2460         PluginCustomSorter cmp (favorite_order);
2461         plugs.sort (cmp);
2462
2463         favorite_order = plugs;
2464
2465         sync_treeview_from_favorite_order ();
2466 }
2467
2468 void
2469 Mixer_UI::sync_treeview_favorite_ui_state (const TreeModel::Path& path, const TreeModel::iterator&)
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         if (!ppp) {
2477                 return;
2478         }
2479         PluginInfoPtr pip = ppp->_pip;
2480         if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2481                 if (favorite_ui_state[pip->unique_id]) {
2482                         favorite_plugins_display.expand_row (path, true);
2483                 }
2484         }
2485 }
2486
2487 void
2488 Mixer_UI::sync_treeview_from_favorite_order ()
2489 {
2490         favorite_plugins_model->clear ();
2491         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i) {
2492                 PluginInfoPtr pip = (*i);
2493
2494                 TreeModel::Row newrow = *(favorite_plugins_model->append());
2495                 newrow[favorite_plugins_columns.name] = (*i)->name;
2496                 newrow[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip));
2497                 if (!_session) {
2498                         continue;
2499                 }
2500
2501                 vector<ARDOUR::Plugin::PresetRecord> presets = (*i)->get_presets (true);
2502                 for (vector<ARDOUR::Plugin::PresetRecord>::const_iterator j = presets.begin(); j != presets.end(); ++j) {
2503                         Gtk::TreeModel::Row child_row = *(favorite_plugins_model->append (newrow.children()));
2504                         child_row[favorite_plugins_columns.name] = (*j).label;
2505                         child_row[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip, &(*j)));
2506                 }
2507                 if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2508                         if (favorite_ui_state[pip->unique_id]) {
2509                                 favorite_plugins_display.expand_row (favorite_plugins_model->get_path(newrow), true);
2510                         }
2511                 }
2512         }
2513 }
2514
2515 void
2516 Mixer_UI::popup_note_context_menu (GdkEventButton *ev)
2517 {
2518         using namespace Gtk::Menu_Helpers;
2519
2520         Gtk::Menu* m = manage (new Menu);
2521         MenuList& items = m->items ();
2522
2523         if (_selection.routes.empty()) {
2524                 items.push_back (MenuElem (_("No Track/Bus is selected.")));
2525         } else {
2526                 items.push_back (MenuElem (_("Add at the top"),
2527                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddTop)));
2528                 items.push_back (MenuElem (_("Add Pre-Fader"),
2529                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPreFader)));
2530                 items.push_back (MenuElem (_("Add Post-Fader"),
2531                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPostFader)));
2532                 items.push_back (MenuElem (_("Add at the end"),
2533                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddBottom)));
2534         }
2535
2536         items.push_back (SeparatorElem());
2537
2538         items.push_back (MenuElem (_("Remove from favorites"), sigc::mem_fun (*this, &Mixer_UI::remove_selected_from_favorites)));
2539
2540         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2541         if (ppp && ppp->_preset.valid && ppp->_preset.user) {
2542                 // we cannot currently delete AU presets
2543                 if (!ppp->_pip || ppp->_pip->type != AudioUnit) {
2544                         items.push_back (MenuElem (_("Delete Preset"), sigc::mem_fun (*this, &Mixer_UI::delete_selected_preset)));
2545                 }
2546         }
2547
2548         m->popup (ev->button, ev->time);
2549 }
2550
2551 bool
2552 Mixer_UI::plugin_row_button_press (GdkEventButton *ev)
2553 {
2554         if ((ev->type == GDK_BUTTON_PRESS) && (ev->button == 3) ) {
2555                 TreeModel::Path path;
2556                 TreeViewColumn* column;
2557                 int cellx, celly;
2558                 if (favorite_plugins_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
2559                         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2560                         if (selection) {
2561                                 selection->unselect_all();
2562                                 selection->select(path);
2563                         }
2564                 }
2565                 ARDOUR::PluginPresetPtr ppp = selected_plugin();
2566                 if (ppp) {
2567                         popup_note_context_menu (ev);
2568                 }
2569         }
2570         return false;
2571 }
2572
2573
2574 PluginPresetPtr
2575 Mixer_UI::selected_plugin ()
2576 {
2577         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2578         if (!selection) {
2579                 return PluginPresetPtr();
2580         }
2581         Gtk::TreeModel::iterator iter = selection->get_selected();
2582         if (!iter) {
2583                 return PluginPresetPtr();
2584         }
2585         return (*iter)[favorite_plugins_columns.plugin];
2586 }
2587
2588 void
2589 Mixer_UI::add_selected_processor (ProcessorPosition pos)
2590 {
2591         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2592         if (ppp) {
2593                 add_favorite_processor (ppp, pos);
2594         }
2595 }
2596
2597 void
2598 Mixer_UI::delete_selected_preset ()
2599 {
2600         if (!_session) {
2601                 return;
2602         }
2603         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2604         if (!ppp || !ppp->_preset.valid || !ppp->_preset.user) {
2605                 return;
2606         }
2607         PluginPtr plugin = ppp->_pip->load (*_session);
2608         plugin->get_presets();
2609         plugin->remove_preset (ppp->_preset.label);
2610 }
2611
2612 void
2613 Mixer_UI::remove_selected_from_favorites ()
2614 {
2615         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2616         if (!ppp) {
2617                 return;
2618         }
2619         PluginManager::PluginStatusType status = PluginManager::Normal;
2620         PluginManager& manager (PluginManager::instance());
2621
2622         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2623         manager.save_statuses ();
2624 }
2625
2626 void
2627 Mixer_UI::plugin_row_activated (const TreeModel::Path& path, TreeViewColumn* column)
2628 {
2629         TreeIter iter;
2630         if (!(iter = favorite_plugins_model->get_iter (path))) {
2631                 return;
2632         }
2633         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2634         add_favorite_processor (ppp, AddPreFader); // TODO: preference?!
2635 }
2636
2637 void
2638 Mixer_UI::add_favorite_processor (ARDOUR::PluginPresetPtr ppp, ProcessorPosition pos)
2639 {
2640         if (!_session || _selection.routes.empty()) {
2641                 return;
2642         }
2643
2644         PluginInfoPtr pip = ppp->_pip;
2645         for (RouteUISelection::iterator i = _selection.routes.begin(); i != _selection.routes.end(); ++i) {
2646                 boost::shared_ptr<ARDOUR::Route> rt = (*i)->route();
2647                 if (!rt) { continue; }
2648
2649                 PluginPtr p = pip->load (*_session);
2650                 if (!p) { continue; }
2651
2652                 if (ppp->_preset.valid) {
2653                         p->load_preset (ppp->_preset);
2654                 }
2655
2656                 Route::ProcessorStreams err;
2657                 boost::shared_ptr<Processor> processor (new PluginInsert (*_session, p));
2658
2659                 switch (pos) {
2660                         case AddTop:
2661                                 rt->add_processor_by_index (processor, 0, &err, Config->get_new_plugins_active ());
2662                                 break;
2663                         case AddPreFader:
2664                                 rt->add_processor (processor, PreFader, &err, Config->get_new_plugins_active ());
2665                                 break;
2666                         case AddPostFader:
2667                                 {
2668                                         int idx = 0;
2669                                         int pos = 0;
2670                                         for (;;++idx) {
2671                                                 boost::shared_ptr<Processor> np = rt->nth_processor (idx);
2672                                                 if (!np) {
2673                                                         break;
2674                                                 }
2675                                                 if (!np->display_to_user()) {
2676                                                         continue;
2677                                                 }
2678                                                 if (boost::dynamic_pointer_cast<Amp> (np) && // Fader, not Trim
2679                                                                 boost::dynamic_pointer_cast<Amp> (np)->gain_control()->parameter().type() == GainAutomation) {
2680                                                         break;
2681                                                 }
2682                                                 ++pos;
2683                                         }
2684                                         rt->add_processor_by_index (processor, ++pos, &err, Config->get_new_plugins_active ());
2685                                 }
2686                                 break;
2687                         case AddBottom:
2688                                 rt->add_processor_by_index (processor, -1, &err, Config->get_new_plugins_active ());
2689                                 break;
2690                 }
2691         }
2692 }
2693
2694 bool
2695 PluginTreeStore::row_drop_possible_vfunc(const Gtk::TreeModel::Path& dest, const Gtk::SelectionData& data) const
2696 {
2697         if (data.get_target() != "GTK_TREE_MODEL_ROW") {
2698                 return false;
2699         }
2700
2701         // only allow to re-order top-level items
2702         TreePath src;
2703         if (TreePath::get_from_selection_data (data, src)) {
2704                 if (src.up() && src.up()) {
2705                         return false;
2706                 }
2707         }
2708
2709         // don't allow to drop as child-rows.
2710         Gtk::TreeModel::Path _dest = dest; // un const
2711         const bool is_child = _dest.up (); // explicit bool for clang
2712         if (!is_child || _dest.empty ()) {
2713                 return true;
2714         }
2715         return false;
2716 }
2717
2718 void
2719 Mixer_UI::plugin_drop (const Glib::RefPtr<Gdk::DragContext>&, const Gtk::SelectionData& data)
2720 {
2721         if (data.get_target() != "PluginPresetPtr") {
2722                 return;
2723         }
2724         if (data.get_length() != sizeof (PluginPresetPtr)) {
2725                 return;
2726         }
2727         const void *d = data.get_data();
2728         const PluginPresetPtr ppp = *(static_cast<const PluginPresetPtr*> (d));
2729
2730         PluginManager::PluginStatusType status = PluginManager::Favorite;
2731         PluginManager& manager (PluginManager::instance());
2732
2733         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2734         manager.save_statuses ();
2735 }
2736
2737 void
2738 Mixer_UI::do_vca_assign (boost::shared_ptr<VCA> vca)
2739 {
2740         /* call protected MixerActor:: method */
2741         vca_assign (vca);
2742 }
2743
2744 void
2745 Mixer_UI::do_vca_unassign (boost::shared_ptr<VCA> vca)
2746 {
2747         /* call protected MixerActor:: method */
2748         vca_unassign (vca);
2749 }
2750
2751 void
2752 Mixer_UI::show_vca_slaves (boost::shared_ptr<VCA> vca)
2753 {
2754         boost::shared_ptr<VCA> v = spilled_vca.lock();
2755         if (v != vca) {
2756                 spilled_vca = vca;
2757                 show_vca_change (vca); /* EMIT SIGNAL */
2758                 redisplay_track_list ();
2759         }
2760 }
2761
2762 bool
2763 Mixer_UI::showing_vca_slaves_for (boost::shared_ptr<VCA> vca) const
2764 {
2765        return vca == spilled_vca.lock();
2766 }