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 "mouse_cursors.h"
  60 #include "ardour_ui.h"
  61 #include "prompter.h"
  62 #include "utils.h"
  63 #include "route_sorter.h"
  64 #include "actions.h"
  65 #include "gui_thread.h"
  66 #include "mixer_group_tabs.h"
  67 #include "route_sorter.h"
  68 #include "timers.h"
  69 #include "ui_config.h"
  70 #include "vca_master_strip.h"
  71
  72 #include "i18n.h"
  73
  74 using namespace ARDOUR;
  75 using namespace ARDOUR_UI_UTILS;
  76 using namespace PBD;
  77 using namespace Gtk;
  78 using namespace Glib;
  79 using namespace Gtkmm2ext;
  80 using namespace std;
  81
  82 using PBD::atoi;
  83 using PBD::Unwinder;
  84
  85 Mixer_UI* Mixer_UI::_instance = 0;
  86
  87 Mixer_UI*
  88 Mixer_UI::instance ()
  89 {
  90         if (!_instance) {
  91                 _instance  = new Mixer_UI;
  92         }
  93
  94         return _instance;
  95 }
  96
  97 Mixer_UI::Mixer_UI ()
  98         : Tabbable (_content, _("Mixer"))
  99         , no_track_list_redisplay (false)
 100         , in_group_row_change (false)
 101         , track_menu (0)
 102         , _monitor_section (0)
 103         , _plugin_selector (0)
 104         , _strip_width (UIConfiguration::instance().get_default_narrow_ms() ? Narrow : Wide)
 105         , ignore_reorder (false)
 106         , _in_group_rebuild_or_clear (false)
 107         , _route_deletion_in_progress (false)
 108         , _following_editor_selection (false)
 109         , _maximised (false)
 110         , _show_mixer_list (true)
 111 {
 112         PresentationInfo::Change.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_presentation_info, this), gui_context());
 113
 114         /* bindings was already set in MixerActor constructor */
 115
 116         _content.set_data ("ardour-bindings", bindings);
 117
 118         scroller.set_can_default (true);
 119         // set_default (scroller);
 120
 121         scroller_base.set_flags (Gtk::CAN_FOCUS);
 122         scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 123         scroller_base.set_name ("MixerWindow");
 124         scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 125
 126         /* set up drag-n-drop */
 127         vector<TargetEntry> target_table;
 128         target_table.push_back (TargetEntry ("PluginFavoritePtr"));
 129         scroller_base.drag_dest_set (target_table);
 130         scroller_base.signal_drag_data_received().connect (sigc::mem_fun(*this, &Mixer_UI::scroller_drag_data_received));
 131
 132         // add as last item of strip packer
 133         strip_packer.pack_end (scroller_base, true, true);
 134
 135         _group_tabs = new MixerGroupTabs (this);
 136         VBox* b = manage (new VBox);
 137         b->pack_start (*_group_tabs, PACK_SHRINK);
 138         b->pack_start (strip_packer);
 139         b->show_all ();
 140
 141         scroller.add (*b);
 142         scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 143
 144         setup_track_display ();
 145
 146         group_model = ListStore::create (group_columns);
 147         group_display.set_model (group_model);
 148         group_display.append_column (_("Group"), group_columns.text);
 149         group_display.append_column (_("Show"), group_columns.visible);
 150         group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
 151         group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
 152         group_display.get_column (0)->set_expand(true);
 153         group_display.get_column (1)->set_expand(false);
 154         group_display.set_name ("EditGroupList");
 155         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 156         group_display.set_reorderable (true);
 157         group_display.set_headers_visible (true);
 158         group_display.set_rules_hint (true);
 159         group_display.set_can_focus(false);
 160
 161         /* name is directly editable */
 162
 163         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
 164         name_cell->property_editable() = true;
 165         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 166
 167         /* use checkbox for the active column */
 168
 169         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (1));
 170         active_cell->property_activatable() = true;
 171         active_cell->property_radio() = false;
 172
 173         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 174         /* We use this to notice drag-and-drop reorders of the group list */
 175         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 176         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 177
 178         group_display_scroller.add (group_display);
 179         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 180
 181         HBox* route_group_display_button_box = manage (new HBox());
 182
 183         Button* route_group_add_button = manage (new Button ());
 184         Button* route_group_remove_button = manage (new Button ());
 185
 186         Widget* w;
 187
 188         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 189         w->show();
 190         route_group_add_button->add (*w);
 191
 192         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
 193         w->show();
 194         route_group_remove_button->add (*w);
 195
 196         route_group_display_button_box->set_homogeneous (true);
 197
 198         route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
 199         route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
 200
 201         route_group_display_button_box->add (*route_group_add_button);
 202         route_group_display_button_box->add (*route_group_remove_button);
 203
 204         group_display_vbox.pack_start (group_display_scroller, true, true);
 205         group_display_vbox.pack_start (*route_group_display_button_box, false, false);
 206
 207         group_display_frame.set_name ("BaseFrame");
 208         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 209         group_display_frame.add (group_display_vbox);
 210
 211
 212         list<TargetEntry> target_list;
 213         target_list.push_back (TargetEntry ("PluginPresetPtr"));
 214
 215         favorite_plugins_model = PluginTreeStore::create (favorite_plugins_columns);
 216         favorite_plugins_display.set_model (favorite_plugins_model);
 217         favorite_plugins_display.append_column (_("Favorite Plugins"), favorite_plugins_columns.name);
 218         favorite_plugins_display.set_name ("EditGroupList");
 219         favorite_plugins_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 220         favorite_plugins_display.set_reorderable (false);
 221         favorite_plugins_display.set_headers_visible (true);
 222         favorite_plugins_display.set_rules_hint (true);
 223         favorite_plugins_display.set_can_focus (false);
 224         favorite_plugins_display.add_object_drag (favorite_plugins_columns.plugin.index(), "PluginFavoritePtr");
 225         favorite_plugins_display.set_drag_column (favorite_plugins_columns.name.index());
 226         favorite_plugins_display.add_drop_targets (target_list);
 227         favorite_plugins_display.signal_row_activated().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_activated));
 228         favorite_plugins_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_button_press), false);
 229         favorite_plugins_display.signal_drop.connect (sigc::mem_fun (*this, &Mixer_UI::plugin_drop));
 230         favorite_plugins_display.signal_row_expanded().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 231         favorite_plugins_display.signal_row_collapsed().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 232         favorite_plugins_model->signal_row_has_child_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::sync_treeview_favorite_ui_state));
 233
 234         favorite_plugins_scroller.add (favorite_plugins_display);
 235         favorite_plugins_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 236
 237         favorite_plugins_frame.set_name ("BaseFrame");
 238         favorite_plugins_frame.set_shadow_type (Gtk::SHADOW_IN);
 239         favorite_plugins_frame.add (favorite_plugins_scroller);
 240
 241         rhs_pane1.add (favorite_plugins_frame);
 242         rhs_pane1.add (track_display_frame);
 243         rhs_pane2.add (rhs_pane1);
 244         rhs_pane2.add (group_display_frame);
 245
 246         list_vpacker.pack_start (rhs_pane2, true, true);
 247
 248         string vca_text = _("Control Masters");
 249         Gtk::HBox* vca_top_padding = manage (new Gtk::HBox);
 250         vca_top_padding->set_size_request (-1, 2);
 251         vca_vpacker.pack_start (*vca_top_padding, false, false);
 252
 253         vca_label.set_text (vca_text);
 254         vca_label_bar.set_size_request (-1, 16); /* must match height in GroupTabs::set_size_request() */
 255
 256         vca_label_bar.set_name (X_("VCALabelBar"));
 257         vca_label_bar.add (vca_label);
 258
 259         vca_vpacker.pack_start (vca_label_bar, false, false);
 260
 261         vca_scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 262         vca_scroller_base.set_name (X_("MixerWindow"));
 263         vca_scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::masters_scroller_button_release), false);
 264         vca_hpacker.pack_end (vca_scroller_base, true, true);
 265
 266         vca_scroller.add (vca_hpacker);
 267         vca_scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 268         vca_scroller.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 269
 270         vca_vpacker.pack_start (vca_scroller, true, true);
 271
 272         inner_pane.add (scroller);
 273         inner_pane.add (vca_vpacker);
 274
 275         global_hpacker.pack_start (inner_pane, true, true);
 276         global_hpacker.pack_start (out_packer, false, false);
 277
 278         list_hpane.add (list_vpacker);
 279         list_hpane.add (global_hpacker);
 280
 281
 282         XMLNode const * settings = ARDOUR_UI::instance()->mixer_settings();
 283         XMLProperty const * prop;
 284         float fract;
 285
 286         {
 287                 LocaleGuard lg;
 288
 289                 if (!settings || ((prop = settings->property ("mixer-rhs-pane1-pos")) == 0) || ((fract = atof (prop->value())) > 1.0)) {
 290                         rhs_pane1.set_divider (0, 0.6f);
 291                 } else {
 292                         rhs_pane1.set_divider (0, fract);
 293                 }
 294                 if (!settings || ((prop = settings->property ("mixer-rhs-pane2-pos")) == 0) || ((fract = atof (prop->value())) > 1.0)) {
 295                         rhs_pane2.set_divider (0, 0.7f);
 296                 } else {
 297                         rhs_pane2.set_divider (0, fract);
 298                 }
 299                 if (!settings || ((prop = settings->property ("mixer-list-hpane-pos")) == 0) || ((fract = atof (prop->value())) > 1.0)) {
 300                         list_hpane.set_divider (0, 0.2f);
 301                 } else {
 302                         list_hpane.set_divider (0, fract);
 303                 }
 304                 if (!settings || ((prop = settings->property ("mixer-inner-pane-pos")) == 0)  || ((fract = atof (prop->value())) > 1.0)) {
 305                         inner_pane.set_divider (0, 0.8f);
 306                 } else {
 307                         inner_pane.set_divider (0, atof (prop->value()));
 308                 }
 309         }
 310
 311         rhs_pane1.set_drag_cursor (*PublicEditor::instance().cursors()->expand_up_down);
 312         rhs_pane2.set_drag_cursor (*PublicEditor::instance().cursors()->expand_up_down);
 313         list_hpane.set_drag_cursor (*PublicEditor::instance().cursors()->expand_left_right);
 314         inner_pane.set_drag_cursor (*PublicEditor::instance().cursors()->expand_left_right);
 315
 316         _content.pack_start (list_hpane, true, true);
 317
 318         update_title ();
 319
 320         route_group_display_button_box->show();
 321         route_group_add_button->show();
 322         route_group_remove_button->show();
 323
 324         _content.show ();
 325         _content.set_name ("MixerWindow");
 326
 327         global_hpacker.show();
 328         scroller.show();
 329         scroller_base.show();
 330         scroller_hpacker.show();
 331         mixer_scroller_vpacker.show();
 332         list_vpacker.show();
 333         group_display_button_label.show();
 334         group_display_button.show();
 335         group_display_scroller.show();
 336         favorite_plugins_scroller.show();
 337         group_display_vbox.show();
 338         group_display_frame.show();
 339         favorite_plugins_frame.show();
 340         rhs_pane1.show();
 341         rhs_pane2.show();
 342         strip_packer.show();
 343         inner_pane.show();
 344         vca_top_padding->show ();
 345         vca_scroller.show();
 346         vca_vpacker.show();
 347         vca_hpacker.show();
 348         vca_label_bar.show();
 349         vca_label.show();
 350         vca_scroller_base.show();
 351         out_packer.show();
 352         list_hpane.show();
 353         group_display.show();
 354         favorite_plugins_display.show();
 355
 356         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 357
 358         /* handle escape */
 359
 360         ARDOUR_UI::instance()->Escape.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::escape, this), gui_context());
 361
 362 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 363         _plugin_selector = new PluginSelector (PluginManager::instance ());
 364 #else
 365 #error implement deferred Plugin-Favorite list
 366 #endif
 367         PluginManager::instance ().PluginListChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 368         PluginManager::instance ().PluginStatusesChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 369         ARDOUR::Plugin::PresetsChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 370 }
 371
 372 Mixer_UI::~Mixer_UI ()
 373 {
 374         if (_monitor_section) {
 375                 monitor_section_detached ();
 376                 delete _monitor_section;
 377         }
 378         delete _plugin_selector;
 379 }
 380
 381 void
 382 Mixer_UI::escape ()
 383 {
 384         select_none ();
 385 }
 386
 387 void
 388 Mixer_UI::track_editor_selection ()
 389 {
 390         PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
 391 }
 392
 393 Gtk::Window*
 394 Mixer_UI::use_own_window (bool and_fill_it)
 395 {
 396         bool new_window = !own_window();
 397
 398         Gtk::Window* win = Tabbable::use_own_window (and_fill_it);
 399
 400
 401         if (win && new_window) {
 402                 win->set_name ("MixerWindow");
 403                 ARDOUR_UI::instance()->setup_toplevel_window (*win, _("Mixer"), this);
 404                 win->signal_scroll_event().connect (sigc::mem_fun (*this, &Mixer_UI::on_scroll_event), false);
 405                 win->signal_event().connect (sigc::bind (sigc::ptr_fun (&Keyboard::catch_user_event_for_pre_dialog_focus), win));
 406                 win->set_data ("ardour-bindings", bindings);
 407                 update_title ();
 408         }
 409
 410         return win;
 411 }
 412
 413 void
 414 Mixer_UI::show_window ()
 415 {
 416         Tabbable::show_window ();
 417
 418         /* show/hide group tabs as required */
 419         parameter_changed ("show-group-tabs");
 420
 421         /* now reset each strips width so the right widgets are shown */
 422
 423         TreeModel::Children rows = track_model->children();
 424         TreeModel::Children::iterator ri;
 425
 426         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 427                 AxisView* av = (*ri)[stripable_columns.strip];
 428                 MixerStrip* ms = dynamic_cast<MixerStrip*> (av);
 429                 if (!ms) {
 430                         continue;
 431                 }
 432                 ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 433                 /* Fix visibility of mixer strip stuff */
 434                 ms->parameter_changed (X_("mixer-element-visibility"));
 435         }
 436
 437         /* force focus into main area */
 438         scroller_base.grab_focus ();
 439 }
 440
 441 void
 442 Mixer_UI::remove_master (VCAMasterStrip* vms)
 443 {
 444         if (_session && _session->deletion_in_progress()) {
 445                 /* its all being taken care of */
 446                 return;
 447         }
 448
 449         TreeModel::Children rows = track_model->children();
 450         TreeModel::Children::iterator ri;
 451
 452         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 453                 if ((*ri)[stripable_columns.strip] == vms) {
 454                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 455                         track_model->erase (ri);
 456                         break;
 457                 }
 458         }
 459 }
 460
 461 bool
 462 Mixer_UI::masters_scroller_button_release (GdkEventButton* ev)
 463 {
 464         using namespace Menu_Helpers;
 465
 466         if (Keyboard::is_context_menu_event (ev)) {
 467                 ARDOUR_UI::instance()->add_route ();
 468                 return true;
 469         }
 470
 471         return false;
 472 }
 473
 474 void
 475 Mixer_UI::add_masters (VCAList& vlist)
 476 {
 477         StripableList sl;
 478
 479         for (VCAList::iterator v = vlist.begin(); v != vlist.end(); ++v) {
 480                 sl.push_back (boost::dynamic_pointer_cast<Stripable> (*v));
 481         }
 482
 483         add_stripables (sl);
 484 }
 485
 486 void
 487 Mixer_UI::add_routes (RouteList& rlist)
 488 {
 489         StripableList sl;
 490
 491         for (RouteList::iterator r = rlist.begin(); r != rlist.end(); ++r) {
 492                 sl.push_back (*r);
 493         }
 494
 495         add_stripables (sl);
 496 }
 497
 498 void
 499 Mixer_UI::add_stripables (StripableList& slist)
 500 {
 501         Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 502         bool from_scratch = (track_model->children().size() == 0);
 503         uint32_t nroutes = 0;
 504
 505         slist.sort (StripablePresentationInfoSorter());
 506
 507         for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
 508                 boost::shared_ptr<Stripable> s = (*it)[stripable_columns.stripable];
 509
 510                 if (!s) {
 511                         continue;
 512                 }
 513
 514                 nroutes++;
 515
 516                 if (s->presentation_info().order() == (slist.front()->presentation_info().order() + slist.size())) {
 517                         insert_iter = it;
 518                         break;
 519                 }
 520         }
 521
 522         MixerStrip* strip;
 523
 524         try {
 525                 no_track_list_redisplay = true;
 526                 track_display.set_model (Glib::RefPtr<ListStore>());
 527
 528                 for (StripableList::iterator s = slist.begin(); s != slist.end(); ++s) {
 529
 530                         boost::shared_ptr<Route> route;
 531                         boost::shared_ptr<VCA> vca;
 532
 533                         if ((vca  = boost::dynamic_pointer_cast<VCA> (*s))) {
 534
 535                                 VCAMasterStrip* vms = new VCAMasterStrip (_session, vca);
 536
 537                                 TreeModel::Row row = *(track_model->append());
 538
 539                                 row[stripable_columns.text] = vca->name();
 540                                 row[stripable_columns.visible] = vms->marked_for_display ();
 541                                 row[stripable_columns.strip] = vms;
 542                                 row[stripable_columns.stripable] = vca;
 543
 544                                 vms->CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_master, this, _1), gui_context());
 545
 546                         } else if ((route = boost::dynamic_pointer_cast<Route> (*s))) {
 547
 548                                 if (route->is_auditioner()) {
 549                                         continue;
 550                                 }
 551
 552                                 if (route->is_monitor()) {
 553
 554                                         if (!_monitor_section) {
 555                                                 _monitor_section = new MonitorSection (_session);
 556
 557                                                 XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 558                                                 if (mnode) {
 559                                                         _monitor_section->tearoff().set_state (*mnode);
 560                                                 }
 561                                         }
 562
 563                                         out_packer.pack_end (_monitor_section->tearoff(), false, false);
 564                                         _monitor_section->set_session (_session);
 565                                         _monitor_section->tearoff().show_all ();
 566
 567                                         _monitor_section->tearoff().Detach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_detached));
 568                                         _monitor_section->tearoff().Attach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_attached));
 569
 570                                         monitor_section_attached ();
 571
 572                                         route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 573
 574                                         /* no regular strip shown for control out */
 575
 576                                         continue;
 577                                 }
 578
 579                                 strip = new MixerStrip (*this, _session, route);
 580                                 strips.push_back (strip);
 581
 582                                 UIConfiguration::instance().get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 583
 584                                 if (strip->width_owner() != strip) {
 585                                         strip->set_width_enum (_strip_width, this);
 586                                 }
 587
 588                                 show_strip (strip);
 589
 590                                 TreeModel::Row row = *(track_model->insert (insert_iter));
 591
 592                                 row[stripable_columns.text] = route->name();
 593                                 row[stripable_columns.visible] = route->is_master() ? true : strip->marked_for_display();
 594                                 row[stripable_columns.stripable] = route;
 595                                 row[stripable_columns.strip] = strip;
 596
 597                                 if (nroutes != 0) {
 598                                         _selection.add (strip);
 599                                 }
 600
 601                                 route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
 602
 603                                 strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 604                                 strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 605                         }
 606                 }
 607
 608         } catch (const std::exception& e) {
 609                 error << string_compose (_("Error adding GUI elements for new tracks/busses %1"), e.what()) << endmsg;
 610         }
 611
 612         no_track_list_redisplay = false;
 613         track_display.set_model (track_model);
 614
 615         if (!from_scratch) {
 616                 sync_presentation_info_from_treeview ();
 617         }
 618 }
 619
 620 void
 621 Mixer_UI::deselect_all_strip_processors ()
 622 {
 623         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 624                 (*i)->deselect_all_processors();
 625         }
 626 }
 627
 628 void
 629 Mixer_UI::select_strip (MixerStrip& ms, bool add)
 630 {
 631         if (add) {
 632                 _selection.add (&ms);
 633         } else {
 634                 _selection.set (&ms);
 635         }
 636 }
 637
 638 void
 639 Mixer_UI::select_none ()
 640 {
 641         _selection.clear_routes();
 642         deselect_all_strip_processors();
 643 }
 644
 645 void
 646 Mixer_UI::delete_processors ()
 647 {
 648         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 649                 (*i)->delete_processors();
 650         }
 651 }
 652
 653
 654 void
 655 Mixer_UI::remove_strip (MixerStrip* strip)
 656 {
 657         if (_session && _session->deletion_in_progress()) {
 658                 /* its all being taken care of */
 659                 return;
 660         }
 661
 662         TreeModel::Children rows = track_model->children();
 663         TreeModel::Children::iterator ri;
 664         list<MixerStrip *>::iterator i;
 665
 666         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 667                 strips.erase (i);
 668         }
 669
 670         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 671                 if ((*ri)[stripable_columns.strip] == strip) {
 672                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 673                         track_model->erase (ri);
 674                         break;
 675                 }
 676         }
 677 }
 678
 679 void
 680 Mixer_UI::sync_presentation_info_from_treeview ()
 681 {
 682         if (ignore_reorder || !_session || _session->deletion_in_progress()) {
 683                 return;
 684         }
 685
 686         TreeModel::Children rows = track_model->children();
 687
 688         if (rows.empty()) {
 689                 return;
 690         }
 691
 692         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync presentation info from treeview\n");
 693
 694         TreeModel::Children::iterator ri;
 695         bool change = false;
 696         uint32_t order = 0;
 697
 698         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 699                 bool visible = (*ri)[stripable_columns.visible];
 700                 boost::shared_ptr<Stripable> stripable = (*ri)[stripable_columns.stripable];
 701
 702                 if (!stripable) {
 703                         continue;
 704                 }
 705
 706                 /* Monitor and Auditioner do not get their presentation
 707                  * info reset here.
 708                  */
 709
 710                 if (stripable->is_monitor() || stripable->is_auditioner()) {
 711                         continue;
 712                 }
 713
 714                 /* Master also doesn't get set here but since the editor allows
 715                  * it to be reordered, we need to preserve its ordering.
 716                  */
 717
 718                 stripable->presentation_info().set_hidden (!visible);
 719
 720                 if (order != stripable->presentation_info().order()) {
 721                         stripable->set_presentation_order_explicit (order);
 722                         change = true;
 723                 }
 724
 725                 ++order;
 726         }
 727
 728         if (change) {
 729                 DEBUG_TRACE (DEBUG::OrderKeys, "... notify PI change from mixer GUI\n");
 730                 _session->notify_presentation_info_change ();
 731         }
 732 }
 733
 734 void
 735 Mixer_UI::sync_treeview_from_presentation_info ()
 736 {
 737         if (!_session || _session->deletion_in_progress()) {
 738                 return;
 739         }
 740
 741         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from presentation info.\n");
 742
 743         /* we could get here after either a change in the Mixer or Editor sort
 744          * order, but either way, the mixer order keys reflect the intended
 745          * order for the GUI, so reorder the treeview model to match it.
 746          */
 747
 748         vector<int> neworder;
 749         TreeModel::Children rows = track_model->children();
 750         uint32_t old_order = 0;
 751         bool changed = false;
 752
 753         if (rows.empty()) {
 754                 return;
 755         }
 756
 757         OrderingKeys sorted;
 758
 759         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 760                 boost::shared_ptr<Stripable> stripable = (*ri)[stripable_columns.stripable];
 761                 sorted.push_back (OrderKeys (old_order, stripable->presentation_info().order()));
 762         }
 763
 764         SortByNewDisplayOrder cmp;
 765
 766         sort (sorted.begin(), sorted.end(), cmp);
 767         neworder.assign (sorted.size(), 0);
 768
 769         uint32_t n = 0;
 770
 771         for (OrderingKeys::iterator sr = sorted.begin(); sr != sorted.end(); ++sr, ++n) {
 772
 773                 neworder[n] = sr->old_display_order;
 774
 775                 if (sr->old_display_order != n) {
 776                         changed = true;
 777                 }
 778         }
 779
 780         if (changed) {
 781                 Unwinder<bool> uw (ignore_reorder, true);
 782                 track_model->reorder (neworder);
 783         }
 784
 785         redisplay_track_list ();
 786 }
 787
 788 void
 789 Mixer_UI::follow_editor_selection ()
 790 {
 791         if (_following_editor_selection) {
 792                 return;
 793         }
 794
 795         _following_editor_selection = true;
 796         _selection.block_routes_changed (true);
 797
 798         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 799
 800         _selection.clear_routes ();
 801
 802         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 803                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
 804                 if (rtav) {
 805                         MixerStrip* ms = strip_by_route (rtav->route());
 806                         if (ms) {
 807                                 _selection.add (ms);
 808                         }
 809                 }
 810         }
 811
 812         _following_editor_selection = false;
 813         _selection.block_routes_changed (false);
 814 }
 815
 816
 817 MixerStrip*
 818 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 819 {
 820         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 821                 if ((*i)->route() == r) {
 822                         return (*i);
 823                 }
 824         }
 825
 826         return 0;
 827 }
 828
 829 bool
 830 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 831 {
 832         if (ev->button == 1) {
 833                 if (_selection.selected (strip)) {
 834                         /* primary-click: toggle selection state of strip */
 835                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 836                                 _selection.remove (strip);
 837                         } else if (_selection.routes.size() > 1) {
 838                                 /* de-select others */
 839                                 _selection.set (strip);
 840                         }
 841                 } else {
 842                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 843                                 _selection.add (strip);
 844                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 845
 846                                 /* extend selection */
 847
 848                                 vector<MixerStrip*> tmp;
 849                                 bool accumulate = false;
 850                                 bool found_another = false;
 851
 852                                 tmp.push_back (strip);
 853
 854                                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 855                                         if ((*i) == strip) {
 856                                                 /* hit clicked strip, start accumulating till we hit the first
 857                                                    selected strip
 858                                                 */
 859                                                 if (accumulate) {
 860                                                         /* done */
 861                                                         break;
 862                                                 } else {
 863                                                         accumulate = true;
 864                                                 }
 865                                         } else if (_selection.selected (*i)) {
 866                                                 /* hit selected strip. if currently accumulating others,
 867                                                    we're done. if not accumulating others, start doing so.
 868                                                 */
 869                                                 found_another = true;
 870                                                 if (accumulate) {
 871                                                         /* done */
 872                                                         break;
 873                                                 } else {
 874                                                         accumulate = true;
 875                                                 }
 876                                         } else {
 877                                                 if (accumulate) {
 878                                                         tmp.push_back (*i);
 879                                                 }
 880                                         }
 881                                 }
 882
 883                                 if (found_another) {
 884                                         for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 885                                                 _selection.add (*i);
 886                                         }
 887                                 } else
 888                                         _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
 889                         } else {
 890                                 _selection.set (strip);
 891                         }
 892                 }
 893         }
 894
 895         return true;
 896 }
 897
 898 void
 899 Mixer_UI::set_session (Session* sess)
 900 {
 901         SessionHandlePtr::set_session (sess);
 902
 903         if (_plugin_selector) {
 904                 _plugin_selector->set_session (_session);
 905         }
 906
 907         _group_tabs->set_session (sess);
 908
 909         if (!_session) {
 910                 return;
 911         }
 912
 913         refill_favorite_plugins();
 914
 915         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 916         set_state (*node, 0);
 917
 918         update_title ();
 919
 920         initial_track_display ();
 921
 922         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_routes, this, _1), gui_context());
 923         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 924         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 925         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 926         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 927         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 928         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 929
 930         _session->vca_manager().VCAAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_masters, this, _1), gui_context());
 931
 932         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 933
 934         route_groups_changed ();
 935
 936         if (_visible) {
 937                 show_window();
 938         }
 939         start_updating ();
 940 }
 941
 942 void
 943 Mixer_UI::session_going_away ()
 944 {
 945         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 946
 947         _in_group_rebuild_or_clear = true;
 948         group_model->clear ();
 949         _in_group_rebuild_or_clear = false;
 950
 951         _selection.clear ();
 952         track_model->clear ();
 953
 954         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 955                 delete (*i);
 956         }
 957
 958         if (_monitor_section) {
 959                 _monitor_section->tearoff().hide_visible ();
 960         }
 961
 962         monitor_section_detached ();
 963
 964         strips.clear ();
 965
 966         stop_updating ();
 967
 968         SessionHandlePtr::session_going_away ();
 969
 970         _session = 0;
 971         update_title ();
 972 }
 973
 974 void
 975 Mixer_UI::track_visibility_changed (std::string const & path)
 976 {
 977         if (_session && _session->deletion_in_progress()) {
 978                 return;
 979         }
 980
 981         TreeIter iter;
 982
 983         if ((iter = track_model->get_iter (path))) {
 984
 985                 AxisView* av = (*iter)[stripable_columns.strip];
 986                 bool visible = (*iter)[stripable_columns.visible];
 987
 988                 if (av->set_marked_for_display (!visible)) {
 989                         update_track_visibility ();
 990                 }
 991         }
 992 }
 993
 994 void
 995 Mixer_UI::update_track_visibility ()
 996 {
 997         TreeModel::Children rows = track_model->children();
 998         TreeModel::Children::iterator i;
 999
1000         {
1001                 Unwinder<bool> uw (no_track_list_redisplay, true);
1002
1003                 for (i = rows.begin(); i != rows.end(); ++i) {
1004                         AxisView* av = (*i)[stripable_columns.strip];
1005                         (*i)[stripable_columns.visible] = av->marked_for_display ();
1006                 }
1007
1008                 /* force presentation catch up with visibility changes
1009                  */
1010
1011                 sync_presentation_info_from_treeview ();
1012         }
1013
1014         redisplay_track_list ();
1015 }
1016
1017 void
1018 Mixer_UI::show_strip (MixerStrip* ms)
1019 {
1020         TreeModel::Children rows = track_model->children();
1021         TreeModel::Children::iterator i;
1022
1023         for (i = rows.begin(); i != rows.end(); ++i) {
1024
1025                 AxisView* av = (*i)[stripable_columns.strip];
1026                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1027                 if (strip == ms) {
1028                         (*i)[stripable_columns.visible] = true;
1029                         redisplay_track_list ();
1030                         break;
1031                 }
1032         }
1033 }
1034
1035 void
1036 Mixer_UI::hide_strip (MixerStrip* ms)
1037 {
1038         TreeModel::Children rows = track_model->children();
1039         TreeModel::Children::iterator i;
1040
1041         for (i = rows.begin(); i != rows.end(); ++i) {
1042
1043                 AxisView* av = (*i)[stripable_columns.strip];
1044                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1045                 if (strip == ms) {
1046                         (*i)[stripable_columns.visible] = false;
1047                         redisplay_track_list ();
1048                         break;
1049                 }
1050         }
1051 }
1052
1053 gint
1054 Mixer_UI::start_updating ()
1055 {
1056     fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
1057     return 0;
1058 }
1059
1060 gint
1061 Mixer_UI::stop_updating ()
1062 {
1063     fast_screen_update_connection.disconnect();
1064     return 0;
1065 }
1066
1067 void
1068 Mixer_UI::fast_update_strips ()
1069 {
1070         if (_content.is_mapped () && _session) {
1071                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1072                         (*i)->fast_update ();
1073                 }
1074         }
1075 }
1076
1077 void
1078 Mixer_UI::set_all_strips_visibility (bool yn)
1079 {
1080         TreeModel::Children rows = track_model->children();
1081         TreeModel::Children::iterator i;
1082
1083         {
1084                 Unwinder<bool> uw (no_track_list_redisplay, true);
1085
1086                 for (i = rows.begin(); i != rows.end(); ++i) {
1087
1088                         AxisView* av = (*i)[stripable_columns.strip];
1089                         MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1090
1091                         if (!strip) {
1092                                 continue;
1093                         }
1094
1095                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1096                                 continue;
1097                         }
1098
1099                         (*i)[stripable_columns.visible] = yn;
1100                 }
1101         }
1102
1103         redisplay_track_list ();
1104 }
1105
1106
1107 void
1108 Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
1109 {
1110         TreeModel::Children rows = track_model->children();
1111         TreeModel::Children::iterator i;
1112
1113         {
1114                 Unwinder<bool> uw (no_track_list_redisplay, true);
1115
1116                 for (i = rows.begin(); i != rows.end(); ++i) {
1117
1118                         AxisView* av = (*i)[stripable_columns.strip];
1119                         MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1120
1121                         if (!strip) {
1122                                 continue;
1123                         }
1124
1125                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1126                                 continue;
1127                         }
1128
1129                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
1130                         boost::shared_ptr<MidiTrack> mt = strip->midi_track();
1131
1132                         switch (tracks) {
1133                         case 0:
1134                                 (*i)[stripable_columns.visible] = yn;
1135                                 break;
1136
1137                         case 1:
1138                                 if (at) { /* track */
1139                                         (*i)[stripable_columns.visible] = yn;
1140                                 }
1141                                 break;
1142
1143                         case 2:
1144                                 if (!at && !mt) { /* bus */
1145                                         (*i)[stripable_columns.visible] = yn;
1146                                 }
1147                                 break;
1148
1149                         case 3:
1150                                 if (mt) { /* midi-track */
1151                                         (*i)[stripable_columns.visible] = yn;
1152                                 }
1153                                 break;
1154                         }
1155                 }
1156         }
1157
1158         redisplay_track_list ();
1159 }
1160
1161 void
1162 Mixer_UI::hide_all_routes ()
1163 {
1164         set_all_strips_visibility (false);
1165 }
1166
1167 void
1168 Mixer_UI::show_all_routes ()
1169 {
1170         set_all_strips_visibility (true);
1171 }
1172
1173 void
1174 Mixer_UI::show_all_audiobus ()
1175 {
1176         set_all_audio_midi_visibility (2, true);
1177 }
1178 void
1179 Mixer_UI::hide_all_audiobus ()
1180 {
1181         set_all_audio_midi_visibility (2, false);
1182 }
1183
1184 void
1185 Mixer_UI::show_all_audiotracks()
1186 {
1187         set_all_audio_midi_visibility (1, true);
1188 }
1189 void
1190 Mixer_UI::hide_all_audiotracks ()
1191 {
1192         set_all_audio_midi_visibility (1, false);
1193 }
1194
1195 void
1196 Mixer_UI::show_all_miditracks()
1197 {
1198         set_all_audio_midi_visibility (3, true);
1199 }
1200 void
1201 Mixer_UI::hide_all_miditracks ()
1202 {
1203         set_all_audio_midi_visibility (3, false);
1204 }
1205
1206 void
1207 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1208 {
1209         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1210         sync_presentation_info_from_treeview ();
1211 }
1212
1213 void
1214 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1215 {
1216         /* this happens as the second step of a DnD within the treeview as well
1217            as when a row/route is actually deleted.
1218
1219            if it was a deletion then we have to force a redisplay because
1220            order keys may not have changed.
1221         */
1222
1223         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1224         sync_presentation_info_from_treeview ();
1225
1226         if (_route_deletion_in_progress) {
1227                 redisplay_track_list ();
1228         }
1229 }
1230
1231 void
1232 Mixer_UI::spill_redisplay (boost::shared_ptr<VCA> vca)
1233 {
1234         TreeModel::Children rows = track_model->children();
1235
1236         for (TreeModel::Children::iterator i = rows.begin(); i != rows.end(); ++i) {
1237
1238                 AxisView* av = (*i)[stripable_columns.strip];
1239                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1240
1241                 if (!strip) {
1242                         /* we're in the middle of changing a row, don't worry */
1243                         continue;
1244                 }
1245
1246                 if (!strip->route()) {
1247                         /* non-route element */
1248                         continue;
1249                 }
1250
1251                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1252                         continue;
1253                 }
1254
1255                 if (strip->route()->slaved_to (vca)) {
1256
1257                         if (strip->packed()) {
1258                                 strip_packer.reorder_child (*strip, -1); /* put at end */
1259                         } else {
1260                                 strip_packer.pack_start (*strip, false, false);
1261                                 strip->set_packed (true);
1262                         }
1263
1264                 } else {
1265
1266                         if (strip->packed()) {
1267                                 strip_packer.remove (*strip);
1268                                 strip->set_packed (false);
1269                         }
1270                 }
1271         }
1272 }
1273
1274 void
1275 Mixer_UI::redisplay_track_list ()
1276 {
1277         if (no_track_list_redisplay) {
1278                 return;
1279         }
1280
1281         boost::shared_ptr<VCA> sv = spilled_vca.lock ();
1282
1283         if (sv) {
1284                 spill_redisplay (sv);
1285                 return;
1286         }
1287
1288         TreeModel::Children rows = track_model->children();
1289         TreeModel::Children::iterator i;
1290         uint32_t n_masters = 0;
1291
1292         container_clear (vca_hpacker);
1293         vca_hpacker.pack_end (vca_scroller_base, true, true);
1294
1295         for (i = rows.begin(); i != rows.end(); ++i) {
1296
1297                 AxisView* s = (*i)[stripable_columns.strip];
1298                 bool const visible = (*i)[stripable_columns.visible];
1299                 boost::shared_ptr<Stripable> stripable = (*i)[stripable_columns.stripable];
1300
1301                 if (!s) {
1302                         /* we're in the middle of changing a row, don't worry */
1303                         continue;
1304                 }
1305
1306                 VCAMasterStrip* vms;
1307
1308                 if ((vms = dynamic_cast<VCAMasterStrip*> (s))) {
1309                         if (visible) {
1310                                 vca_hpacker.pack_start (*vms, false, false);
1311                                 vms->show ();
1312                                 n_masters++;
1313                         }
1314                         continue;
1315                 }
1316
1317                 MixerStrip* strip = dynamic_cast<MixerStrip*> (s);
1318
1319                 if (!strip) {
1320                         continue;
1321                 }
1322
1323                 if (visible) {
1324
1325                         if (strip->packed()) {
1326
1327                                 if (stripable->is_master() || stripable->is_monitor()) {
1328                                         out_packer.reorder_child (*strip, -1);
1329
1330                                 } else {
1331                                         strip_packer.reorder_child (*strip, -1); /* put at end */
1332                                 }
1333
1334                         } else {
1335
1336                                 if (stripable->is_master() || stripable->is_monitor()) {
1337                                         out_packer.pack_start (*strip, false, false);
1338                                 } else {
1339                                         strip_packer.pack_start (*strip, false, false);
1340                                 }
1341                                 strip->set_packed (true);
1342                         }
1343
1344                 } else {
1345
1346                         if (stripable->is_master() || stripable->is_monitor()) {
1347                                 /* do nothing, these cannot be hidden */
1348                         } else {
1349                                 if (strip->packed()) {
1350                                         strip_packer.remove (*strip);
1351                                         strip->set_packed (false);
1352                                 }
1353                         }
1354                 }
1355         }
1356
1357         /* update visibility of VCA assign buttons */
1358
1359         if (n_masters == 0) {
1360                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::remove_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1361                 vca_scroller.hide ();
1362         } else {
1363                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::add_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1364                 vca_scroller.show ();
1365         }
1366
1367         _group_tabs->set_dirty ();
1368 }
1369
1370 void
1371 Mixer_UI::strip_width_changed ()
1372 {
1373         _group_tabs->set_dirty ();
1374
1375 #ifdef __APPLE__
1376         TreeModel::Children rows = track_model->children();
1377         TreeModel::Children::iterator i;
1378         long order;
1379
1380         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1381                 AxisView* av = (*i)[stripable_columns.strip];
1382                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1383
1384                 if (strip == 0) {
1385                         continue;
1386                 }
1387
1388                 bool visible = (*i)[stripable_columns.visible];
1389
1390                 if (visible) {
1391                         strip->queue_draw();
1392                 }
1393         }
1394 #endif
1395
1396 }
1397
1398 struct PresentationInfoMixerSorter
1399 {
1400         bool operator() (boost::shared_ptr<Stripable> a, boost::shared_ptr<Stripable> b) {
1401                 if (a->is_master()) {
1402                         /* master after everything else */
1403                         return false;
1404                 } else if (b->is_master()) {
1405                         /* everything else before master */
1406                         return true;
1407                 }
1408                 return a->presentation_info().order () < b->presentation_info().order ();
1409         }
1410 };
1411
1412 void
1413 Mixer_UI::initial_track_display ()
1414 {
1415         StripableList sl;
1416
1417         boost::shared_ptr<RouteList> routes = _session->get_routes();
1418
1419         for (RouteList::iterator r = routes->begin(); r != routes->end(); ++r) {
1420                 sl.push_back (*r);
1421         }
1422
1423         VCAList vcas = _session->vca_manager().vcas();
1424
1425         for (VCAList::iterator v = vcas.begin(); v != vcas.end(); ++v) {
1426                 sl.push_back (boost::dynamic_pointer_cast<Stripable> (*v));
1427         }
1428
1429         sl.sort (PresentationInfoMixerSorter());
1430
1431         {
1432                 /* These are also used inside ::add_stripables() but we need
1433                  *  them here because we're going to clear the track_model also.
1434                  */
1435                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1436                 Unwinder<bool> uw2 (ignore_reorder, true);
1437
1438                 track_model->clear ();
1439                 add_stripables (sl);
1440         }
1441
1442         redisplay_track_list ();
1443 }
1444
1445 void
1446 Mixer_UI::show_track_list_menu ()
1447 {
1448         if (track_menu == 0) {
1449                 build_track_menu ();
1450         }
1451
1452         track_menu->popup (1, gtk_get_current_event_time());
1453 }
1454
1455 bool
1456 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1457 {
1458         if (Keyboard::is_context_menu_event (ev)) {
1459                 show_track_list_menu ();
1460                 return true;
1461         }
1462
1463         return false;
1464 }
1465
1466 void
1467 Mixer_UI::build_track_menu ()
1468 {
1469         using namespace Menu_Helpers;
1470         using namespace Gtk;
1471
1472         track_menu = new Menu;
1473         track_menu->set_name ("ArdourContextMenu");
1474         MenuList& items = track_menu->items();
1475
1476         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1477         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1478         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1479         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1480         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1481         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1482         items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
1483         items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
1484
1485 }
1486
1487 void
1488 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1489 {
1490         if (!what_changed.contains (ARDOUR::Properties::name)) {
1491                 return;
1492         }
1493
1494         ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1495
1496         TreeModel::Children rows = track_model->children();
1497         TreeModel::Children::iterator i;
1498
1499         for (i = rows.begin(); i != rows.end(); ++i) {
1500                 if ((*i)[stripable_columns.strip] == mx) {
1501                         (*i)[stripable_columns.text] = mx->route()->name();
1502                         return;
1503                 }
1504         }
1505
1506         error << _("track display list item for renamed strip not found!") << endmsg;
1507 }
1508
1509 bool
1510 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1511 {
1512         TreeModel::Path path;
1513         TreeViewColumn* column;
1514         int cellx;
1515         int celly;
1516
1517         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1518                 _group_tabs->get_menu(0)->popup (1, ev->time);
1519                 return true;
1520         }
1521
1522         TreeIter iter = group_model->get_iter (path);
1523         if (!iter) {
1524                 _group_tabs->get_menu(0)->popup (1, ev->time);
1525                 return true;
1526         }
1527
1528         RouteGroup* group = (*iter)[group_columns.group];
1529
1530         if (Keyboard::is_context_menu_event (ev)) {
1531                 _group_tabs->get_menu(group)->popup (1, ev->time);
1532                 return true;
1533         }
1534
1535         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1536         case 0:
1537                 if (Keyboard::is_edit_event (ev)) {
1538                         if (group) {
1539                                 // edit_route_group (group);
1540 #ifdef __APPLE__
1541                                 group_display.queue_draw();
1542 #endif
1543                                 return true;
1544                         }
1545                 }
1546                 break;
1547
1548         case 1:
1549         {
1550                 bool visible = (*iter)[group_columns.visible];
1551                 (*iter)[group_columns.visible] = !visible;
1552 #ifdef __APPLE__
1553                 group_display.queue_draw();
1554 #endif
1555                 return true;
1556         }
1557
1558         default:
1559                 break;
1560         }
1561
1562         return false;
1563  }
1564
1565 void
1566 Mixer_UI::activate_all_route_groups ()
1567 {
1568         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1569 }
1570
1571 void
1572 Mixer_UI::disable_all_route_groups ()
1573 {
1574         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1575 }
1576
1577 void
1578 Mixer_UI::route_groups_changed ()
1579 {
1580         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1581
1582         _in_group_rebuild_or_clear = true;
1583
1584         /* just rebuild the while thing */
1585
1586         group_model->clear ();
1587
1588 #if 0
1589         /* this is currently not used,
1590          * Mixer_UI::group_display_button_press() has a case for it,
1591          * and a commented edit_route_group() but that's n/a since 2011.
1592          *
1593          * This code is left as reminder that
1594          * row[group_columns.group] = 0 has special meaning.
1595          */
1596         {
1597                 TreeModel::Row row;
1598                 row = *(group_model->append());
1599                 row[group_columns.visible] = true;
1600                 row[group_columns.text] = (_("-all-"));
1601                 row[group_columns.group] = 0;
1602         }
1603 #endif
1604
1605         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1606
1607         _group_tabs->set_dirty ();
1608         _in_group_rebuild_or_clear = false;
1609 }
1610
1611 void
1612 Mixer_UI::new_route_group ()
1613 {
1614         RouteList rl;
1615
1616         _group_tabs->run_new_group_dialog (rl, false);
1617 }
1618
1619 void
1620 Mixer_UI::remove_selected_route_group ()
1621 {
1622         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1623         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1624
1625         if (rows.empty()) {
1626                 return;
1627         }
1628
1629         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1630         TreeIter iter;
1631
1632         /* selection mode is single, so rows.begin() is it */
1633
1634         if ((iter = group_model->get_iter (*i))) {
1635
1636                 RouteGroup* rg = (*iter)[group_columns.group];
1637
1638                 if (rg) {
1639                         _session->remove_route_group (*rg);
1640                 }
1641         }
1642 }
1643
1644 void
1645 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1646 {
1647         if (in_group_row_change) {
1648                 return;
1649         }
1650
1651         /* force an update of any mixer strips that are using this group,
1652            otherwise mix group names don't change in mixer strips
1653         */
1654
1655         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1656                 if ((*i)->route_group() == group) {
1657                         (*i)->route_group_changed();
1658                 }
1659         }
1660
1661         TreeModel::iterator i;
1662         TreeModel::Children rows = group_model->children();
1663         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1664
1665         in_group_row_change = true;
1666
1667         for (i = rows.begin(); i != rows.end(); ++i) {
1668                 if ((*i)[group_columns.group] == group) {
1669                         (*i)[group_columns.visible] = !group->is_hidden ();
1670                         (*i)[group_columns.text] = group->name ();
1671                         break;
1672                 }
1673         }
1674
1675         in_group_row_change = false;
1676
1677         if (change.contains (Properties::name)) {
1678                 _group_tabs->set_dirty ();
1679         }
1680
1681         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1682                 if ((*j)->route_group() == group) {
1683                         if (group->is_hidden ()) {
1684                                 hide_strip (*j);
1685                         } else {
1686                                 show_strip (*j);
1687                         }
1688                 }
1689         }
1690 }
1691
1692 void
1693 Mixer_UI::show_mixer_list (bool yn)
1694 {
1695         if (yn) {
1696                 list_vpacker.show ();
1697         } else {
1698                 list_vpacker.hide ();
1699         }
1700
1701         _show_mixer_list = yn;
1702 }
1703
1704 void
1705 Mixer_UI::show_monitor_section (bool yn)
1706 {
1707         if (!monitor_section()) {
1708                 return;
1709         }
1710         if (monitor_section()->tearoff().torn_off()) {
1711                 return;
1712         }
1713
1714         if (yn) {
1715                 monitor_section()->tearoff().show();
1716         } else {
1717                 monitor_section()->tearoff().hide();
1718         }
1719 }
1720
1721 void
1722 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1723 {
1724         RouteGroup* group;
1725         TreeIter iter;
1726
1727         if ((iter = group_model->get_iter (path))) {
1728
1729                 if ((group = (*iter)[group_columns.group]) == 0) {
1730                         return;
1731                 }
1732
1733                 if (new_text != group->name()) {
1734                         group->set_name (new_text);
1735                 }
1736         }
1737 }
1738
1739 void
1740 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1741 {
1742         RouteGroup* group;
1743
1744         if (in_group_row_change) {
1745                 return;
1746         }
1747
1748         if ((group = (*iter)[group_columns.group]) == 0) {
1749                 return;
1750         }
1751
1752         std::string name = (*iter)[group_columns.text];
1753
1754         if (name != group->name()) {
1755                 group->set_name (name);
1756         }
1757
1758         bool hidden = !(*iter)[group_columns.visible];
1759
1760         if (hidden != group->is_hidden ()) {
1761                 group->set_hidden (hidden, this);
1762         }
1763 }
1764
1765 /** Called when a group model row is deleted, but also when the model is
1766  *  reordered by a user drag-and-drop; the latter is what we are
1767  *  interested in here.
1768  */
1769 void
1770 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1771 {
1772         if (_in_group_rebuild_or_clear) {
1773                 return;
1774         }
1775
1776         /* Re-write the session's route group list so that the new order is preserved */
1777
1778         list<RouteGroup*> new_list;
1779
1780         Gtk::TreeModel::Children children = group_model->children();
1781         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1782                 RouteGroup* g = (*i)[group_columns.group];
1783                 if (g) {
1784                         new_list.push_back (g);
1785                 }
1786         }
1787
1788         _session->reorder_route_groups (new_list);
1789 }
1790
1791
1792 void
1793 Mixer_UI::add_route_group (RouteGroup* group)
1794 {
1795         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1796         bool focus = false;
1797
1798         in_group_row_change = true;
1799
1800         TreeModel::Row row = *(group_model->append());
1801         row[group_columns.visible] = !group->is_hidden ();
1802         row[group_columns.group] = group;
1803         if (!group->name().empty()) {
1804                 row[group_columns.text] = group->name();
1805         } else {
1806                 row[group_columns.text] = _("unnamed");
1807                 focus = true;
1808         }
1809
1810         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1811
1812         if (focus) {
1813                 TreeViewColumn* col = group_display.get_column (0);
1814                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1815                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1816         }
1817
1818         _group_tabs->set_dirty ();
1819
1820         in_group_row_change = false;
1821 }
1822
1823 bool
1824 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1825 {
1826         using namespace Menu_Helpers;
1827
1828         if (Keyboard::is_context_menu_event (ev)) {
1829                 ARDOUR_UI::instance()->add_route ();
1830                 return true;
1831         }
1832
1833         return false;
1834 }
1835
1836 void
1837 Mixer_UI::scroller_drag_data_received (const Glib::RefPtr<Gdk::DragContext>& context, int x, int y, const Gtk::SelectionData& data, guint info, guint time)
1838 {
1839         printf ("Mixer_UI::scroller_drag_data_received\n");
1840         if (data.get_target() != "PluginFavoritePtr") {
1841                 context->drag_finish (false, false, time);
1842                 return;
1843         }
1844
1845         const void * d = data.get_data();
1846         const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>* tv = reinterpret_cast<const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>*>(d);
1847
1848         PluginPresetList nfos;
1849         TreeView* source;
1850         tv->get_object_drag_data (nfos, &source);
1851
1852         Route::ProcessorList pl;
1853         bool ok = false;
1854
1855         for (list<PluginPresetPtr>::const_iterator i = nfos.begin(); i != nfos.end(); ++i) {
1856                 PluginPresetPtr ppp = (*i);
1857                 PluginInfoPtr pip = ppp->_pip;
1858                 if (!pip->is_instrument ()) {
1859                         continue;
1860                 }
1861                 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);
1862                 ok = true;
1863         }
1864
1865         context->drag_finish (ok, false, time);
1866 }
1867
1868 void
1869 Mixer_UI::set_strip_width (Width w, bool save)
1870 {
1871         _strip_width = w;
1872
1873         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1874                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1875         }
1876 }
1877
1878
1879 struct PluginStateSorter {
1880 public:
1881         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
1882                 std::list<std::string>::const_iterator aiter = std::find(_user.begin(), _user.end(), (*a).unique_id);
1883                 std::list<std::string>::const_iterator biter = std::find(_user.begin(), _user.end(), (*b).unique_id);
1884                 if (aiter != _user.end() && biter != _user.end()) {
1885                         return std::distance (_user.begin(), aiter)  < std::distance (_user.begin(), biter);
1886                 }
1887                 if (aiter != _user.end()) {
1888                         return true;
1889                 }
1890                 if (biter != _user.end()) {
1891                         return false;
1892                 }
1893                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
1894         }
1895
1896         PluginStateSorter(std::list<std::string> user) : _user (user)  {}
1897 private:
1898         std::list<std::string> _user;
1899 };
1900
1901 int
1902 Mixer_UI::set_state (const XMLNode& node, int version)
1903 {
1904         XMLProperty const * prop;
1905         LocaleGuard lg;
1906
1907         Tabbable::set_state (node, version);
1908
1909         if ((prop = node.property ("narrow-strips"))) {
1910                 if (string_is_affirmative (prop->value())) {
1911                         set_strip_width (Narrow);
1912                 } else {
1913                         set_strip_width (Wide);
1914                 }
1915         }
1916
1917         if ((prop = node.property ("show-mixer"))) {
1918                 if (string_is_affirmative (prop->value())) {
1919                        _visible = true;
1920                 }
1921         }
1922
1923         if ((prop = node.property ("maximised"))) {
1924                 bool yn = string_is_affirmative (prop->value());
1925                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1926                 assert (act);
1927                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1928                 bool fs = tact && tact->get_active();
1929                 if (yn ^ fs) {
1930                         ActionManager::do_action ("Common", "ToggleMaximalMixer");
1931                 }
1932         }
1933
1934         if ((prop = node.property ("show-mixer-list"))) {
1935                 bool yn = string_is_affirmative (prop->value());
1936                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMixerList"));
1937                 assert (act);
1938                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1939
1940                 /* do it twice to force the change */
1941                 tact->set_active (!yn);
1942                 tact->set_active (yn);
1943         }
1944
1945
1946         XMLNode* plugin_order;
1947         if ((plugin_order = find_named_node (node, "PluginOrder")) != 0) {
1948                 store_current_favorite_order ();
1949                 std::list<string> order;
1950                 const XMLNodeList& kids = plugin_order->children("PluginInfo");
1951                 XMLNodeConstIterator i;
1952                 for (i = kids.begin(); i != kids.end(); ++i) {
1953                         if ((prop = (*i)->property ("unique-id"))) {
1954                                 std::string unique_id = prop->value();
1955                                 order.push_back (unique_id);
1956                                 if ((prop = (*i)->property ("expanded"))) {
1957                                         favorite_ui_state[unique_id] = string_is_affirmative (prop->value());
1958                                 }
1959                         }
1960                 }
1961                 PluginStateSorter cmp (order);
1962                 favorite_order.sort (cmp);
1963                 sync_treeview_from_favorite_order ();
1964         }
1965         return 0;
1966 }
1967
1968 XMLNode&
1969 Mixer_UI::get_state ()
1970 {
1971         XMLNode* node = new XMLNode (X_("Mixer"));
1972         char buf[128];
1973         LocaleGuard lg;
1974
1975         node->add_child_nocopy (Tabbable::get_state());
1976
1977         snprintf(buf,sizeof(buf), "%f", rhs_pane1.get_divider());
1978         node->add_property(X_("mixer-rhs-pane1-pos"), string(buf));
1979         snprintf(buf,sizeof(buf), "%f", rhs_pane2.get_divider());
1980         node->add_property(X_("mixer-rhs_pane2-pos"), string(buf));
1981         snprintf(buf,sizeof(buf), "%f", list_hpane.get_divider());
1982         node->add_property(X_("mixer-list-hpane-pos"), string(buf));
1983         snprintf(buf,sizeof(buf), "%f", inner_pane.get_divider());
1984         node->add_property(X_("mixer-inner-pane-pos"), string(buf));
1985
1986         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1987         node->add_property ("show-mixer", _visible ? "yes" : "no");
1988         node->add_property ("show-mixer-list", _show_mixer_list ? "yes" : "no");
1989         node->add_property ("maximised", _maximised ? "yes" : "no");
1990
1991         store_current_favorite_order ();
1992         XMLNode* plugin_order = new XMLNode ("PluginOrder");
1993         int cnt = 0;
1994         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i, ++cnt) {
1995                 XMLNode* p = new XMLNode ("PluginInfo");
1996                 p->add_property ("sort", cnt);
1997                 p->add_property ("unique-id", (*i)->unique_id);
1998                 if (favorite_ui_state.find ((*i)->unique_id) != favorite_ui_state.end ()) {
1999                         p->add_property ("expanded", favorite_ui_state[(*i)->unique_id]);
2000                 }
2001                 plugin_order->add_child_nocopy (*p);
2002         }
2003         node->add_child_nocopy (*plugin_order);
2004
2005         return *node;
2006 }
2007
2008 void
2009 Mixer_UI::scroll_left ()
2010 {
2011         if (!scroller.get_hscrollbar()) return;
2012         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2013         /* stupid GTK: can't rely on clamping across versions */
2014         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
2015 }
2016
2017 void
2018 Mixer_UI::scroll_right ()
2019 {
2020         if (!scroller.get_hscrollbar()) return;
2021         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2022         /* stupid GTK: can't rely on clamping across versions */
2023         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
2024 }
2025
2026 bool
2027 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
2028 {
2029         switch (ev->direction) {
2030         case GDK_SCROLL_LEFT:
2031                 scroll_left ();
2032                 return true;
2033         case GDK_SCROLL_UP:
2034                 if (ev->state & Keyboard::TertiaryModifier) {
2035                         scroll_left ();
2036                         return true;
2037                 }
2038                 return false;
2039
2040         case GDK_SCROLL_RIGHT:
2041                 scroll_right ();
2042                 return true;
2043
2044         case GDK_SCROLL_DOWN:
2045                 if (ev->state & Keyboard::TertiaryModifier) {
2046                         scroll_right ();
2047                         return true;
2048                 }
2049                 return false;
2050         }
2051
2052         return false;
2053 }
2054
2055
2056 void
2057 Mixer_UI::parameter_changed (string const & p)
2058 {
2059         if (p == "show-group-tabs") {
2060                 bool const s = _session->config.get_show_group_tabs ();
2061                 if (s) {
2062                         _group_tabs->show ();
2063                 } else {
2064                         _group_tabs->hide ();
2065                 }
2066         } else if (p == "default-narrow_ms") {
2067                 bool const s = UIConfiguration::instance().get_default_narrow_ms ();
2068                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2069                         (*i)->set_width_enum (s ? Narrow : Wide, this);
2070                 }
2071         } else if (p == "use-monitor-bus") {
2072                 if (_session && !_session->monitor_out()) {
2073                         monitor_section_detached ();
2074                 }
2075         }
2076 }
2077
2078 void
2079 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
2080 {
2081         g->set_active (a, this);
2082 }
2083
2084 PluginSelector*
2085 Mixer_UI::plugin_selector()
2086 {
2087 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
2088         if (!_plugin_selector)
2089                 _plugin_selector = new PluginSelector (PluginManager::instance());
2090 #endif
2091
2092         return _plugin_selector;
2093 }
2094
2095 void
2096 Mixer_UI::setup_track_display ()
2097 {
2098         track_model = ListStore::create (stripable_columns);
2099         track_display.set_model (track_model);
2100         track_display.append_column (_("Strips"), stripable_columns.text);
2101         track_display.append_column (_("Show"), stripable_columns.visible);
2102         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
2103         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
2104         track_display.get_column (0)->set_expand(true);
2105         track_display.get_column (1)->set_expand(false);
2106         track_display.get_column (0)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
2107         track_display.set_name (X_("EditGroupList"));
2108         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
2109         track_display.set_reorderable (true);
2110         track_display.set_headers_visible (true);
2111         track_display.set_can_focus(false);
2112
2113         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
2114         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
2115
2116         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
2117         track_list_visible_cell->property_activatable() = true;
2118         track_list_visible_cell->property_radio() = false;
2119         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
2120
2121         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
2122
2123         track_display_scroller.add (track_display);
2124         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
2125
2126         VBox* v = manage (new VBox);
2127         v->show ();
2128         v->pack_start (track_display_scroller, true, true);
2129
2130         Button* b = manage (new Button);
2131         b->show ();
2132         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
2133         w->show ();
2134         b->add (*w);
2135
2136         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
2137
2138         v->pack_start (*b, false, false);
2139
2140         track_display_frame.set_name("BaseFrame");
2141         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
2142         track_display_frame.add (*v);
2143
2144         track_display_scroller.show();
2145         track_display_frame.show();
2146         track_display.show();
2147 }
2148
2149 void
2150 Mixer_UI::new_track_or_bus ()
2151 {
2152         ARDOUR_UI::instance()->add_route ();
2153 }
2154
2155 void
2156 Mixer_UI::update_title ()
2157 {
2158         if (!own_window()) {
2159                 return;
2160         }
2161
2162         if (_session) {
2163                 string n;
2164
2165                 if (_session->snap_name() != _session->name()) {
2166                         n = _session->snap_name ();
2167                 } else {
2168                         n = _session->name ();
2169                 }
2170
2171                 if (_session->dirty ()) {
2172                         n = "*" + n;
2173                 }
2174
2175                 WindowTitle title (n);
2176                 title += S_("Window|Mixer");
2177                 title += Glib::get_application_name ();
2178                 own_window()->set_title (title.get_string());
2179
2180         } else {
2181
2182                 WindowTitle title (S_("Window|Mixer"));
2183                 title += Glib::get_application_name ();
2184                 own_window()->set_title (title.get_string());
2185         }
2186 }
2187
2188 MixerStrip*
2189 Mixer_UI::strip_by_x (int x)
2190 {
2191         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2192                 int x1, x2, y;
2193
2194                 (*i)->translate_coordinates (_content, 0, 0, x1, y);
2195                 x2 = x1 + (*i)->get_width();
2196
2197                 if (x >= x1 && x <= x2) {
2198                         return (*i);
2199                 }
2200         }
2201
2202         return 0;
2203 }
2204
2205 void
2206 Mixer_UI::set_route_targets_for_operation ()
2207 {
2208         _route_targets.clear ();
2209
2210         if (!_selection.empty()) {
2211                 _route_targets = _selection.routes;
2212                 return;
2213         }
2214
2215 //  removed "implicit" selections of strips, after discussion on IRC
2216
2217 }
2218
2219 void
2220 Mixer_UI::monitor_section_going_away ()
2221 {
2222         if (_monitor_section) {
2223                 monitor_section_detached ();
2224                 out_packer.remove (_monitor_section->tearoff());
2225                 _monitor_section->set_session (0);
2226                 delete _monitor_section;
2227                 _monitor_section = 0;
2228         }
2229 }
2230
2231 void
2232 Mixer_UI::toggle_midi_input_active (bool flip_others)
2233 {
2234         boost::shared_ptr<RouteList> rl (new RouteList);
2235         bool onoff = false;
2236
2237         set_route_targets_for_operation ();
2238
2239         for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
2240                 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
2241
2242                 if (mt) {
2243                         rl->push_back ((*r)->route());
2244                         onoff = !mt->input_active();
2245                 }
2246         }
2247
2248         _session->set_exclusive_input_active (rl, onoff, flip_others);
2249 }
2250
2251 void
2252 Mixer_UI::maximise_mixer_space ()
2253 {
2254         if (!own_window()) {
2255                 return;
2256         }
2257
2258         if (_maximised) {
2259                 return;
2260         }
2261
2262         _window->fullscreen ();
2263         _maximised = true;
2264 }
2265
2266 void
2267 Mixer_UI::restore_mixer_space ()
2268 {
2269         if (!own_window()) {
2270                 return;
2271         }
2272
2273         if (!_maximised) {
2274                 return;
2275         }
2276
2277         own_window()->unfullscreen();
2278         _maximised = false;
2279 }
2280
2281 void
2282 Mixer_UI::monitor_section_attached ()
2283 {
2284         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2285         Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
2286         act->set_sensitive (true);
2287         tact->set_active ();
2288 }
2289
2290 void
2291 Mixer_UI::monitor_section_detached ()
2292 {
2293         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2294         act->set_sensitive (false);
2295 }
2296
2297 void
2298 Mixer_UI::store_current_favorite_order ()
2299 {
2300         typedef Gtk::TreeModel::Children type_children;
2301         type_children children = favorite_plugins_model->children();
2302         favorite_order.clear();
2303         for(type_children::iterator iter = children.begin(); iter != children.end(); ++iter)
2304         {
2305                 Gtk::TreeModel::Row row = *iter;
2306                 ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2307                 favorite_order.push_back (ppp->_pip);
2308                 std::string name = row[favorite_plugins_columns.name];
2309                 favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2310         }
2311 }
2312
2313 void
2314 Mixer_UI::save_favorite_ui_state (const TreeModel::iterator& iter, const TreeModel::Path& path)
2315 {
2316         Gtk::TreeModel::Row row = *iter;
2317         ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2318         assert (ppp);
2319         favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2320 }
2321
2322 void
2323 Mixer_UI::refiller (PluginInfoList& result, const PluginInfoList& plugs)
2324 {
2325         PluginManager& manager (PluginManager::instance());
2326         for (PluginInfoList::const_iterator i = plugs.begin(); i != plugs.end(); ++i) {
2327                 if (manager.get_status (*i) != PluginManager::Favorite) {
2328                         continue;
2329                 }
2330                 result.push_back (*i);
2331         }
2332 }
2333
2334 struct PluginCustomSorter {
2335 public:
2336         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
2337                 PluginInfoList::const_iterator aiter = _user.begin();
2338                 PluginInfoList::const_iterator biter = _user.begin();
2339                 while (aiter != _user.end()) { if ((*aiter)->unique_id == a->unique_id) { break; } ++aiter; }
2340                 while (biter != _user.end()) { if ((*biter)->unique_id == b->unique_id) { break; } ++biter; }
2341
2342                 if (aiter != _user.end() && biter != _user.end()) {
2343                         return std::distance (_user.begin(), aiter) < std::distance (_user.begin(), biter);
2344                 }
2345                 if (aiter != _user.end()) {
2346                         return true;
2347                 }
2348                 if (biter != _user.end()) {
2349                         return false;
2350                 }
2351                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
2352         }
2353         PluginCustomSorter(PluginInfoList user) : _user (user)  {}
2354 private:
2355         PluginInfoList _user;
2356 };
2357
2358 void
2359 Mixer_UI::refill_favorite_plugins ()
2360 {
2361         PluginInfoList plugs;
2362         PluginManager& mgr (PluginManager::instance());
2363
2364 #ifdef LV2_SUPPORT
2365         refiller (plugs, mgr.lv2_plugin_info ());
2366 #endif
2367 #ifdef WINDOWS_VST_SUPPORT
2368         refiller (plugs, mgr.windows_vst_plugin_info ());
2369 #endif
2370 #ifdef LXVST_SUPPORT
2371         refiller (plugs, mgr.lxvst_plugin_info ());
2372 #endif
2373 #ifdef AUDIOUNIT_SUPPORT
2374         refiller (plugs, mgr.au_plugin_info ());
2375 #endif
2376         refiller (plugs, mgr.ladspa_plugin_info ());
2377         refiller (plugs, mgr.lua_plugin_info ());
2378
2379         store_current_favorite_order ();
2380
2381         PluginCustomSorter cmp (favorite_order);
2382         plugs.sort (cmp);
2383
2384         favorite_order = plugs;
2385
2386         sync_treeview_from_favorite_order ();
2387 }
2388
2389 void
2390 Mixer_UI::sync_treeview_favorite_ui_state (const TreeModel::Path& path, const TreeModel::iterator&)
2391 {
2392         TreeIter iter;
2393         if (!(iter = favorite_plugins_model->get_iter (path))) {
2394                 return;
2395         }
2396         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2397         if (!ppp) {
2398                 return;
2399         }
2400         PluginInfoPtr pip = ppp->_pip;
2401         if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2402                 if (favorite_ui_state[pip->unique_id]) {
2403                         favorite_plugins_display.expand_row (path, true);
2404                 }
2405         }
2406 }
2407
2408 void
2409 Mixer_UI::sync_treeview_from_favorite_order ()
2410 {
2411         favorite_plugins_model->clear ();
2412         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i) {
2413                 PluginInfoPtr pip = (*i);
2414
2415                 TreeModel::Row newrow = *(favorite_plugins_model->append());
2416                 newrow[favorite_plugins_columns.name] = (*i)->name;
2417                 newrow[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip));
2418                 if (!_session) {
2419                         continue;
2420                 }
2421
2422                 vector<ARDOUR::Plugin::PresetRecord> presets = (*i)->get_presets (true);
2423                 for (vector<ARDOUR::Plugin::PresetRecord>::const_iterator j = presets.begin(); j != presets.end(); ++j) {
2424                         Gtk::TreeModel::Row child_row = *(favorite_plugins_model->append (newrow.children()));
2425                         child_row[favorite_plugins_columns.name] = (*j).label;
2426                         child_row[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip, &(*j)));
2427                 }
2428                 if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2429                         if (favorite_ui_state[pip->unique_id]) {
2430                                 favorite_plugins_display.expand_row (favorite_plugins_model->get_path(newrow), true);
2431                         }
2432                 }
2433         }
2434 }
2435
2436 void
2437 Mixer_UI::popup_note_context_menu (GdkEventButton *ev)
2438 {
2439         using namespace Gtk::Menu_Helpers;
2440
2441         Gtk::Menu* m = manage (new Menu);
2442         MenuList& items = m->items ();
2443
2444         if (_selection.routes.empty()) {
2445                 items.push_back (MenuElem (_("No Track/Bus is selected.")));
2446         } else {
2447                 items.push_back (MenuElem (_("Add at the top"),
2448                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddTop)));
2449                 items.push_back (MenuElem (_("Add Pre-Fader"),
2450                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPreFader)));
2451                 items.push_back (MenuElem (_("Add Post-Fader"),
2452                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPostFader)));
2453                 items.push_back (MenuElem (_("Add at the end"),
2454                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddBottom)));
2455         }
2456
2457         items.push_back (SeparatorElem());
2458
2459         items.push_back (MenuElem (_("Remove from favorites"), sigc::mem_fun (*this, &Mixer_UI::remove_selected_from_favorites)));
2460
2461         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2462         if (ppp && ppp->_preset.valid && ppp->_preset.user) {
2463                 // we cannot currently delete AU presets
2464                 if (!ppp->_pip || ppp->_pip->type != AudioUnit) {
2465                         items.push_back (MenuElem (_("Delete Preset"), sigc::mem_fun (*this, &Mixer_UI::delete_selected_preset)));
2466                 }
2467         }
2468
2469         m->popup (ev->button, ev->time);
2470 }
2471
2472 bool
2473 Mixer_UI::plugin_row_button_press (GdkEventButton *ev)
2474 {
2475         if ((ev->type == GDK_BUTTON_PRESS) && (ev->button == 3) ) {
2476                 TreeModel::Path path;
2477                 TreeViewColumn* column;
2478                 int cellx, celly;
2479                 if (favorite_plugins_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
2480                         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2481                         if (selection) {
2482                                 selection->unselect_all();
2483                                 selection->select(path);
2484                         }
2485                 }
2486                 ARDOUR::PluginPresetPtr ppp = selected_plugin();
2487                 if (ppp) {
2488                         popup_note_context_menu (ev);
2489                 }
2490         }
2491         return false;
2492 }
2493
2494
2495 PluginPresetPtr
2496 Mixer_UI::selected_plugin ()
2497 {
2498         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2499         if (!selection) {
2500                 return PluginPresetPtr();
2501         }
2502         Gtk::TreeModel::iterator iter = selection->get_selected();
2503         if (!iter) {
2504                 return PluginPresetPtr();
2505         }
2506         return (*iter)[favorite_plugins_columns.plugin];
2507 }
2508
2509 void
2510 Mixer_UI::add_selected_processor (ProcessorPosition pos)
2511 {
2512         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2513         if (ppp) {
2514                 add_favorite_processor (ppp, pos);
2515         }
2516 }
2517
2518 void
2519 Mixer_UI::delete_selected_preset ()
2520 {
2521         if (!_session) {
2522                 return;
2523         }
2524         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2525         if (!ppp || !ppp->_preset.valid || !ppp->_preset.user) {
2526                 return;
2527         }
2528         PluginPtr plugin = ppp->_pip->load (*_session);
2529         plugin->get_presets();
2530         plugin->remove_preset (ppp->_preset.label);
2531 }
2532
2533 void
2534 Mixer_UI::remove_selected_from_favorites ()
2535 {
2536         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2537         if (!ppp) {
2538                 return;
2539         }
2540         PluginManager::PluginStatusType status = PluginManager::Normal;
2541         PluginManager& manager (PluginManager::instance());
2542
2543         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2544         manager.save_statuses ();
2545 }
2546
2547 void
2548 Mixer_UI::plugin_row_activated (const TreeModel::Path& path, TreeViewColumn* column)
2549 {
2550         TreeIter iter;
2551         if (!(iter = favorite_plugins_model->get_iter (path))) {
2552                 return;
2553         }
2554         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2555         add_favorite_processor (ppp, AddPreFader); // TODO: preference?!
2556 }
2557
2558 void
2559 Mixer_UI::add_favorite_processor (ARDOUR::PluginPresetPtr ppp, ProcessorPosition pos)
2560 {
2561         if (!_session || _selection.routes.empty()) {
2562                 return;
2563         }
2564
2565         PluginInfoPtr pip = ppp->_pip;
2566         for (RouteUISelection::iterator i = _selection.routes.begin(); i != _selection.routes.end(); ++i) {
2567                 boost::shared_ptr<ARDOUR::Route> rt = (*i)->route();
2568                 if (!rt) { continue; }
2569
2570                 PluginPtr p = pip->load (*_session);
2571                 if (!p) { continue; }
2572
2573                 if (ppp->_preset.valid) {
2574                         p->load_preset (ppp->_preset);
2575                 }
2576
2577                 Route::ProcessorStreams err;
2578                 boost::shared_ptr<Processor> processor (new PluginInsert (*_session, p));
2579
2580                 switch (pos) {
2581                         case AddTop:
2582                                 rt->add_processor_by_index (processor, 0, &err, Config->get_new_plugins_active ());
2583                                 break;
2584                         case AddPreFader:
2585                                 rt->add_processor (processor, PreFader, &err, Config->get_new_plugins_active ());
2586                                 break;
2587                         case AddPostFader:
2588                                 {
2589                                         int idx = 0;
2590                                         int pos = 0;
2591                                         for (;;++idx) {
2592                                                 boost::shared_ptr<Processor> np = rt->nth_processor (idx);
2593                                                 if (!np) {
2594                                                         break;
2595                                                 }
2596                                                 if (!np->display_to_user()) {
2597                                                         continue;
2598                                                 }
2599                                                 if (boost::dynamic_pointer_cast<Amp> (np) && // Fader, not Trim
2600                                                                 boost::dynamic_pointer_cast<Amp> (np)->gain_control()->parameter().type() == GainAutomation) {
2601                                                         break;
2602                                                 }
2603                                                 ++pos;
2604                                         }
2605                                         rt->add_processor_by_index (processor, ++pos, &err, Config->get_new_plugins_active ());
2606                                 }
2607                                 break;
2608                         case AddBottom:
2609                                 rt->add_processor_by_index (processor, -1, &err, Config->get_new_plugins_active ());
2610                                 break;
2611                 }
2612         }
2613 }
2614
2615 bool
2616 PluginTreeStore::row_drop_possible_vfunc(const Gtk::TreeModel::Path& dest, const Gtk::SelectionData& data) const
2617 {
2618         if (data.get_target() != "GTK_TREE_MODEL_ROW") {
2619                 return false;
2620         }
2621
2622         // only allow to re-order top-level items
2623         TreePath src;
2624         if (TreePath::get_from_selection_data (data, src)) {
2625                 if (src.up() && src.up()) {
2626                         return false;
2627                 }
2628         }
2629
2630         // don't allow to drop as child-rows.
2631         Gtk::TreeModel::Path _dest = dest; // un const
2632         const bool is_child = _dest.up (); // explicit bool for clang
2633         if (!is_child || _dest.empty ()) {
2634                 return true;
2635         }
2636         return false;
2637 }
2638
2639 void
2640 Mixer_UI::plugin_drop (const Glib::RefPtr<Gdk::DragContext>&, const Gtk::SelectionData& data)
2641 {
2642         if (data.get_target() != "PluginPresetPtr") {
2643                 return;
2644         }
2645         if (data.get_length() != sizeof (PluginPresetPtr)) {
2646                 return;
2647         }
2648         const void *d = data.get_data();
2649         const PluginPresetPtr ppp = *(static_cast<const PluginPresetPtr*> (d));
2650
2651         PluginManager::PluginStatusType status = PluginManager::Favorite;
2652         PluginManager& manager (PluginManager::instance());
2653
2654         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2655         manager.save_statuses ();
2656 }
2657
2658 void
2659 Mixer_UI::do_vca_assign (boost::shared_ptr<VCA> vca)
2660 {
2661         /* call protected MixerActor:: method */
2662         vca_assign (vca);
2663 }
2664
2665 void
2666 Mixer_UI::do_vca_unassign (boost::shared_ptr<VCA> vca)
2667 {
2668         /* call protected MixerActor:: method */
2669         vca_unassign (vca);
2670 }
2671
2672 void
2673 Mixer_UI::show_vca_slaves (boost::shared_ptr<VCA> vca)
2674 {
2675         boost::shared_ptr<VCA> v = spilled_vca.lock();
2676         if (v != vca) {
2677                 spilled_vca = vca;
2678                 show_vca_change (vca); /* EMIT SIGNAL */
2679                 redisplay_track_list ();
2680         }
2681 }
2682
2683 bool
2684 Mixer_UI::showing_vca_slaves_for (boost::shared_ptr<VCA> vca) const
2685 {
2686        return vca == spilled_vca.lock();
2687 }