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 (_("Show"), group_columns.visible);
 149         group_display.append_column (_("Group"), group_columns.text);
 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(false);
 153         group_display.get_column (1)->set_expand(true);
 154         group_display.get_column (1)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
 155         group_display.set_name ("EditGroupList");
 156         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 157         group_display.set_reorderable (true);
 158         group_display.set_headers_visible (true);
 159         group_display.set_rules_hint (true);
 160         group_display.set_can_focus(false);
 161
 162         /* name is directly editable */
 163
 164         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (1));
 165         name_cell->property_editable() = true;
 166         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 167
 168         /* use checkbox for the active column */
 169
 170         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (0));
 171         active_cell->property_activatable() = true;
 172         active_cell->property_radio() = false;
 173
 174         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 175         /* We use this to notice drag-and-drop reorders of the group list */
 176         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 177         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 178
 179         group_display_scroller.add (group_display);
 180         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 181
 182         HBox* route_group_display_button_box = manage (new HBox());
 183
 184         Button* route_group_add_button = manage (new Button ());
 185         Button* route_group_remove_button = manage (new Button ());
 186
 187         Widget* w;
 188
 189         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 190         w->show();
 191         route_group_add_button->add (*w);
 192
 193         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
 194         w->show();
 195         route_group_remove_button->add (*w);
 196
 197         route_group_display_button_box->set_homogeneous (true);
 198
 199         route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
 200         route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
 201
 202         route_group_display_button_box->add (*route_group_add_button);
 203         route_group_display_button_box->add (*route_group_remove_button);
 204
 205         group_display_vbox.pack_start (group_display_scroller, true, true);
 206         group_display_vbox.pack_start (*route_group_display_button_box, false, false);
 207
 208         group_display_frame.set_name ("BaseFrame");
 209         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 210         group_display_frame.add (group_display_vbox);
 211
 212
 213         list<TargetEntry> target_list;
 214         target_list.push_back (TargetEntry ("PluginPresetPtr"));
 215
 216         favorite_plugins_model = PluginTreeStore::create (favorite_plugins_columns);
 217         favorite_plugins_display.set_model (favorite_plugins_model);
 218         favorite_plugins_display.append_column (_("Favorite Plugins"), favorite_plugins_columns.name);
 219         favorite_plugins_display.set_name ("EditGroupList");
 220         favorite_plugins_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 221         favorite_plugins_display.set_reorderable (false);
 222         favorite_plugins_display.set_headers_visible (true);
 223         favorite_plugins_display.set_rules_hint (true);
 224         favorite_plugins_display.set_can_focus (false);
 225         favorite_plugins_display.set_tooltip_column (0);
 226         favorite_plugins_display.add_object_drag (favorite_plugins_columns.plugin.index(), "PluginFavoritePtr");
 227         favorite_plugins_display.set_drag_column (favorite_plugins_columns.name.index());
 228         favorite_plugins_display.add_drop_targets (target_list);
 229         favorite_plugins_display.signal_row_activated().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_activated));
 230         favorite_plugins_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_button_press), false);
 231         favorite_plugins_display.signal_drop.connect (sigc::mem_fun (*this, &Mixer_UI::plugin_drop));
 232         favorite_plugins_display.signal_row_expanded().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 233         favorite_plugins_display.signal_row_collapsed().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 234         favorite_plugins_model->signal_row_has_child_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::sync_treeview_favorite_ui_state));
 235
 236         favorite_plugins_scroller.add (favorite_plugins_display);
 237         favorite_plugins_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 238
 239         favorite_plugins_frame.set_name ("BaseFrame");
 240         favorite_plugins_frame.set_shadow_type (Gtk::SHADOW_IN);
 241         favorite_plugins_frame.add (favorite_plugins_scroller);
 242
 243         rhs_pane1.add (favorite_plugins_frame);
 244         rhs_pane1.add (track_display_frame);
 245
 246         rhs_pane2.add (rhs_pane1);
 247         rhs_pane2.add (group_display_frame);
 248
 249         list_vpacker.pack_start (rhs_pane2, true, true);
 250
 251         string vca_text = _("Control Masters");
 252         Gtk::HBox* vca_top_padding = manage (new Gtk::HBox);
 253         vca_top_padding->set_size_request (-1, 2);
 254         vca_vpacker.pack_start (*vca_top_padding, false, false);
 255
 256         vca_label.set_text (vca_text);
 257         vca_label_bar.set_size_request (-1, 16); /* must match height in GroupTabs::set_size_request() */
 258
 259         vca_label_bar.set_name (X_("VCALabelBar"));
 260         vca_label_bar.add (vca_label);
 261
 262         vca_vpacker.pack_start (vca_label_bar, false, false);
 263
 264         vca_scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 265         vca_scroller_base.set_name (X_("MixerWindow"));
 266         vca_scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::masters_scroller_button_release), false);
 267         vca_hpacker.pack_end (vca_scroller_base, true, true);
 268
 269         vca_scroller.add (vca_hpacker);
 270         vca_scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 271         vca_scroller.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 272
 273         vca_vpacker.pack_start (vca_scroller, true, true);
 274
 275         inner_pane.add (scroller);
 276         inner_pane.add (vca_vpacker);
 277
 278         global_hpacker.pack_start (inner_pane, true, true);
 279         global_hpacker.pack_start (out_packer, false, false);
 280
 281         list_hpane.set_check_divider_position (true);
 282         list_hpane.add (list_vpacker);
 283         list_hpane.add (global_hpacker);
 284
 285
 286         XMLNode const * settings = ARDOUR_UI::instance()->mixer_settings();
 287         XMLProperty const * prop;
 288         float fract;
 289
 290         {
 291                 LocaleGuard lg;
 292
 293                 if (!settings || ((prop = settings->property ("mixer-rhs-pane1-pos")) == 0) || ((fract = atof (prop->value())) > 1.0)) {
 294                         rhs_pane1.set_divider (0, 0.6f);
 295                 } else {
 296                         rhs_pane1.set_divider (0, fract);
 297                 }
 298                 if (!settings || ((prop = settings->property ("mixer-rhs-pane2-pos")) == 0) || ((fract = atof (prop->value())) > 1.0)) {
 299                         rhs_pane2.set_divider (0, 0.7f);
 300                 } else {
 301                         rhs_pane2.set_divider (0, fract);
 302                 }
 303                 if (!settings || ((prop = settings->property ("mixer-list-hpane-pos")) == 0) || ((fract = atof (prop->value())) > 1.0)) {
 304                         list_hpane.set_divider (0, 0.2f);
 305                 } else {
 306                         list_hpane.set_divider (0, fract);
 307                 }
 308                 if (!settings || ((prop = settings->property ("mixer-inner-pane-pos")) == 0)  || ((fract = atof (prop->value())) > 1.0)) {
 309                         inner_pane.set_divider (0, 0.8f);
 310                 } else {
 311                         inner_pane.set_divider (0, atof (prop->value()));
 312                 }
 313         }
 314
 315         rhs_pane1.set_drag_cursor (*PublicEditor::instance().cursors()->expand_up_down);
 316         rhs_pane2.set_drag_cursor (*PublicEditor::instance().cursors()->expand_up_down);
 317         list_hpane.set_drag_cursor (*PublicEditor::instance().cursors()->expand_left_right);
 318         inner_pane.set_drag_cursor (*PublicEditor::instance().cursors()->expand_left_right);
 319
 320         _content.pack_start (list_hpane, true, true);
 321
 322         update_title ();
 323
 324         route_group_display_button_box->show();
 325         route_group_add_button->show();
 326         route_group_remove_button->show();
 327
 328         _content.show ();
 329         _content.set_name ("MixerWindow");
 330
 331         global_hpacker.show();
 332         scroller.show();
 333         scroller_base.show();
 334         scroller_hpacker.show();
 335         mixer_scroller_vpacker.show();
 336         list_vpacker.show();
 337         group_display_button_label.show();
 338         group_display_button.show();
 339         group_display_scroller.show();
 340         favorite_plugins_scroller.show();
 341         group_display_vbox.show();
 342         group_display_frame.show();
 343         favorite_plugins_frame.show();
 344         rhs_pane1.show();
 345         rhs_pane2.show();
 346         strip_packer.show();
 347         inner_pane.show();
 348         vca_top_padding->show ();
 349         vca_scroller.show();
 350         vca_vpacker.show();
 351         vca_hpacker.show();
 352         vca_label_bar.show();
 353         vca_label.show();
 354         vca_scroller_base.show();
 355         out_packer.show();
 356         list_hpane.show();
 357         group_display.show();
 358         favorite_plugins_display.show();
 359
 360         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 361
 362         /* handle escape */
 363
 364         ARDOUR_UI::instance()->Escape.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::escape, this), gui_context());
 365
 366 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 367         _plugin_selector = new PluginSelector (PluginManager::instance ());
 368 #else
 369 #error implement deferred Plugin-Favorite list
 370 #endif
 371         PluginManager::instance ().PluginListChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 372         PluginManager::instance ().PluginStatusesChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 373         ARDOUR::Plugin::PresetsChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 374 }
 375
 376 Mixer_UI::~Mixer_UI ()
 377 {
 378         if (_monitor_section) {
 379                 monitor_section_detached ();
 380                 delete _monitor_section;
 381         }
 382         delete _plugin_selector;
 383 }
 384
 385 void
 386 Mixer_UI::escape ()
 387 {
 388         select_none ();
 389 }
 390
 391 void
 392 Mixer_UI::track_editor_selection ()
 393 {
 394         PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
 395 }
 396
 397 Gtk::Window*
 398 Mixer_UI::use_own_window (bool and_fill_it)
 399 {
 400         bool new_window = !own_window();
 401
 402         Gtk::Window* win = Tabbable::use_own_window (and_fill_it);
 403
 404
 405         if (win && new_window) {
 406                 win->set_name ("MixerWindow");
 407                 ARDOUR_UI::instance()->setup_toplevel_window (*win, _("Mixer"), this);
 408                 win->signal_scroll_event().connect (sigc::mem_fun (*this, &Mixer_UI::on_scroll_event), false);
 409                 win->signal_event().connect (sigc::bind (sigc::ptr_fun (&Keyboard::catch_user_event_for_pre_dialog_focus), win));
 410                 win->set_data ("ardour-bindings", bindings);
 411                 update_title ();
 412         }
 413
 414         return win;
 415 }
 416
 417 void
 418 Mixer_UI::show_window ()
 419 {
 420         Tabbable::show_window ();
 421
 422         /* show/hide group tabs as required */
 423         parameter_changed ("show-group-tabs");
 424
 425         /* now reset each strips width so the right widgets are shown */
 426
 427         TreeModel::Children rows = track_model->children();
 428         TreeModel::Children::iterator ri;
 429
 430         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 431                 AxisView* av = (*ri)[stripable_columns.strip];
 432                 MixerStrip* ms = dynamic_cast<MixerStrip*> (av);
 433                 if (!ms) {
 434                         continue;
 435                 }
 436                 ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 437                 /* Fix visibility of mixer strip stuff */
 438                 ms->parameter_changed (X_("mixer-element-visibility"));
 439         }
 440
 441         /* force focus into main area */
 442         scroller_base.grab_focus ();
 443 }
 444
 445 void
 446 Mixer_UI::remove_master (VCAMasterStrip* vms)
 447 {
 448         if (_session && _session->deletion_in_progress()) {
 449                 /* its all being taken care of */
 450                 return;
 451         }
 452
 453         TreeModel::Children rows = track_model->children();
 454         TreeModel::Children::iterator ri;
 455
 456         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 457                 if ((*ri)[stripable_columns.strip] == vms) {
 458                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 459                         track_model->erase (ri);
 460                         break;
 461                 }
 462         }
 463 }
 464
 465 bool
 466 Mixer_UI::masters_scroller_button_release (GdkEventButton* ev)
 467 {
 468         using namespace Menu_Helpers;
 469
 470         if (Keyboard::is_context_menu_event (ev)) {
 471                 ARDOUR_UI::instance()->add_route ();
 472                 return true;
 473         }
 474
 475         return false;
 476 }
 477
 478 void
 479 Mixer_UI::add_masters (VCAList& vlist)
 480 {
 481         StripableList sl;
 482
 483         for (VCAList::iterator v = vlist.begin(); v != vlist.end(); ++v) {
 484                 sl.push_back (boost::dynamic_pointer_cast<Stripable> (*v));
 485         }
 486
 487         add_stripables (sl);
 488 }
 489
 490 void
 491 Mixer_UI::add_routes (RouteList& rlist)
 492 {
 493         StripableList sl;
 494
 495         for (RouteList::iterator r = rlist.begin(); r != rlist.end(); ++r) {
 496                 sl.push_back (*r);
 497         }
 498
 499         add_stripables (sl);
 500 }
 501
 502 void
 503 Mixer_UI::add_stripables (StripableList& slist)
 504 {
 505         Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 506         bool from_scratch = (track_model->children().size() == 0);
 507         uint32_t nroutes = 0;
 508
 509         slist.sort (StripablePresentationInfoSorter());
 510
 511         for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
 512                 boost::shared_ptr<Stripable> s = (*it)[stripable_columns.stripable];
 513
 514                 if (!s) {
 515                         continue;
 516                 }
 517
 518                 nroutes++;
 519
 520                 if (s->presentation_info().order() == (slist.front()->presentation_info().order() + slist.size())) {
 521                         insert_iter = it;
 522                         break;
 523                 }
 524         }
 525
 526         MixerStrip* strip;
 527
 528
 529         try {
 530                 PBD::Unwinder<bool> uw (no_track_list_redisplay, true);
 531
 532                 track_display.set_model (Glib::RefPtr<ListStore>());
 533
 534                 for (StripableList::iterator s = slist.begin(); s != slist.end(); ++s) {
 535
 536                         boost::shared_ptr<Route> route;
 537                         boost::shared_ptr<VCA> vca;
 538
 539                         if ((vca  = boost::dynamic_pointer_cast<VCA> (*s))) {
 540
 541                                 VCAMasterStrip* vms = new VCAMasterStrip (_session, vca);
 542
 543                                 TreeModel::Row row = *(track_model->append());
 544
 545                                 row[stripable_columns.text] = vca->name();
 546                                 row[stripable_columns.visible] = vms->marked_for_display ();
 547                                 row[stripable_columns.strip] = vms;
 548                                 row[stripable_columns.stripable] = vca;
 549
 550                                 vms->CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_master, this, _1), gui_context());
 551
 552                         } else if ((route = boost::dynamic_pointer_cast<Route> (*s))) {
 553
 554                                 if (route->is_auditioner()) {
 555                                         continue;
 556                                 }
 557
 558                                 if (route->is_monitor()) {
 559
 560                                         if (!_monitor_section) {
 561                                                 _monitor_section = new MonitorSection (_session);
 562
 563                                                 XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 564                                                 if (mnode) {
 565                                                         _monitor_section->tearoff().set_state (*mnode);
 566                                                 }
 567                                         }
 568
 569                                         out_packer.pack_end (_monitor_section->tearoff(), false, false);
 570                                         _monitor_section->set_session (_session);
 571                                         _monitor_section->tearoff().show_all ();
 572
 573                                         _monitor_section->tearoff().Detach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_detached));
 574                                         _monitor_section->tearoff().Attach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_attached));
 575
 576                                         monitor_section_attached ();
 577
 578                                         route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 579
 580                                         /* no regular strip shown for control out */
 581
 582                                         continue;
 583                                 }
 584
 585                                 strip = new MixerStrip (*this, _session, route);
 586                                 strips.push_back (strip);
 587
 588                                 UIConfiguration::instance().get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 589
 590                                 if (strip->width_owner() != strip) {
 591                                         strip->set_width_enum (_strip_width, this);
 592                                 }
 593
 594                                 show_strip (strip);
 595
 596                                 if (!route->is_master()) {
 597
 598                                         TreeModel::Row row = *(track_model->insert (insert_iter));
 599
 600                                         row[stripable_columns.text] = route->name();
 601                                         row[stripable_columns.visible] = strip->marked_for_display();
 602                                         row[stripable_columns.stripable] = route;
 603                                         row[stripable_columns.strip] = strip;
 604
 605                                         if (nroutes != 0) {
 606                                                 _selection.add (strip);
 607                                         }
 608
 609                                 } else {
 610
 611                                         out_packer.pack_start (*strip, false, false);
 612                                         strip->set_packed (true);
 613                                 }
 614
 615                                 strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 616                                 strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 617                         }
 618
 619                         (*s)->presentation_info().PropertyChanged.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::stripable_property_changed, this, _1, boost::weak_ptr<Stripable>(*s)), gui_context());
 620                         (*s)->PropertyChanged.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::stripable_property_changed, this, _1, boost::weak_ptr<Stripable>(*s)), gui_context());
 621                                                 }
 622
 623         } catch (const std::exception& e) {
 624                 error << string_compose (_("Error adding GUI elements for new tracks/busses %1"), e.what()) << endmsg;
 625         }
 626
 627         track_display.set_model (track_model);
 628
 629         if (!from_scratch) {
 630                 sync_presentation_info_from_treeview ();
 631         }
 632
 633         redisplay_track_list ();
 634 }
 635
 636 void
 637 Mixer_UI::deselect_all_strip_processors ()
 638 {
 639         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 640                 (*i)->deselect_all_processors();
 641         }
 642 }
 643
 644 void
 645 Mixer_UI::select_strip (MixerStrip& ms, bool add)
 646 {
 647         if (add) {
 648                 _selection.add (&ms);
 649         } else {
 650                 _selection.set (&ms);
 651         }
 652 }
 653
 654 void
 655 Mixer_UI::select_none ()
 656 {
 657         _selection.clear_routes();
 658         deselect_all_strip_processors();
 659 }
 660
 661 void
 662 Mixer_UI::delete_processors ()
 663 {
 664         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 665                 (*i)->delete_processors();
 666         }
 667 }
 668
 669
 670 void
 671 Mixer_UI::remove_strip (MixerStrip* strip)
 672 {
 673         if (_session && _session->deletion_in_progress()) {
 674                 /* its all being taken care of */
 675                 return;
 676         }
 677
 678         TreeModel::Children rows = track_model->children();
 679         TreeModel::Children::iterator ri;
 680         list<MixerStrip *>::iterator i;
 681
 682         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 683                 strips.erase (i);
 684         }
 685
 686         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 687                 if ((*ri)[stripable_columns.strip] == strip) {
 688                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 689                         track_model->erase (ri);
 690                         break;
 691                 }
 692         }
 693 }
 694
 695 void
 696 Mixer_UI::sync_presentation_info_from_treeview ()
 697 {
 698         if (ignore_reorder || !_session || _session->deletion_in_progress()) {
 699                 return;
 700         }
 701
 702         TreeModel::Children rows = track_model->children();
 703
 704         if (rows.empty()) {
 705                 return;
 706         }
 707
 708         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync presentation info from treeview\n");
 709
 710         TreeModel::Children::iterator ri;
 711         bool change = false;
 712         uint32_t order = 0;
 713
 714         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 715                 bool visible = (*ri)[stripable_columns.visible];
 716                 boost::shared_ptr<Stripable> stripable = (*ri)[stripable_columns.stripable];
 717
 718                 if (!stripable) {
 719                         continue;
 720                 }
 721
 722                 /* Monitor and Auditioner do not get their presentation
 723                  * info reset here.
 724                  */
 725
 726                 if (stripable->is_monitor() || stripable->is_auditioner()) {
 727                         continue;
 728                 }
 729
 730                 /* Master also doesn't get set here but since the editor allows
 731                  * it to be reordered, we need to preserve its ordering.
 732                  */
 733
 734                 stripable->presentation_info().set_hidden (!visible);
 735
 736                 if (order != stripable->presentation_info().order()) {
 737                         stripable->set_presentation_order_explicit (order);
 738                         change = true;
 739                 }
 740
 741                 ++order;
 742         }
 743
 744         if (change) {
 745                 DEBUG_TRACE (DEBUG::OrderKeys, "... notify PI change from mixer GUI\n");
 746                 _session->notify_presentation_info_change ();
 747         }
 748 }
 749
 750 void
 751 Mixer_UI::sync_treeview_from_presentation_info ()
 752 {
 753         if (!_session || _session->deletion_in_progress()) {
 754                 return;
 755         }
 756
 757         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from presentation info.\n");
 758
 759         /* we could get here after either a change in the Mixer or Editor sort
 760          * order, but either way, the mixer order keys reflect the intended
 761          * order for the GUI, so reorder the treeview model to match it.
 762          */
 763
 764         vector<int> neworder;
 765         TreeModel::Children rows = track_model->children();
 766         uint32_t old_order = 0;
 767         bool changed = false;
 768
 769         if (rows.empty()) {
 770                 return;
 771         }
 772
 773         OrderingKeys sorted;
 774
 775         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 776                 boost::shared_ptr<Stripable> stripable = (*ri)[stripable_columns.stripable];
 777                 sorted.push_back (OrderKeys (old_order, stripable->presentation_info().order()));
 778         }
 779
 780         SortByNewDisplayOrder cmp;
 781
 782         sort (sorted.begin(), sorted.end(), cmp);
 783         neworder.assign (sorted.size(), 0);
 784
 785         uint32_t n = 0;
 786
 787         for (OrderingKeys::iterator sr = sorted.begin(); sr != sorted.end(); ++sr, ++n) {
 788
 789                 neworder[n] = sr->old_display_order;
 790
 791                 if (sr->old_display_order != n) {
 792                         changed = true;
 793                 }
 794         }
 795
 796         if (changed) {
 797                 Unwinder<bool> uw (ignore_reorder, true);
 798                 track_model->reorder (neworder);
 799         }
 800
 801         redisplay_track_list ();
 802 }
 803
 804 void
 805 Mixer_UI::follow_editor_selection ()
 806 {
 807         if (_following_editor_selection) {
 808                 return;
 809         }
 810
 811         _following_editor_selection = true;
 812         _selection.block_routes_changed (true);
 813
 814         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 815
 816         _selection.clear_routes ();
 817
 818         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 819                 TimeAxisView* tav = dynamic_cast<TimeAxisView*> (*i);
 820                 if (tav) {
 821                         AxisView* axis = axis_by_stripable (tav->stripable());
 822                         if (axis) {
 823                                 _selection.add (axis);
 824                         }
 825                 }
 826         }
 827
 828         _following_editor_selection = false;
 829         _selection.block_routes_changed (false);
 830 }
 831
 832
 833 MixerStrip*
 834 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r) const
 835 {
 836         for (list<MixerStrip *>::const_iterator i = strips.begin(); i != strips.end(); ++i) {
 837                 if ((*i)->route() == r) {
 838                         return (*i);
 839                 }
 840         }
 841
 842         return 0;
 843 }
 844
 845 AxisView*
 846 Mixer_UI::axis_by_stripable (boost::shared_ptr<Stripable> s) const
 847 {
 848         for (list<MixerStrip *>::const_iterator i = strips.begin(); i != strips.end(); ++i) {
 849                 if ((*i)->stripable() == s) {
 850                         return (*i);
 851                 }
 852         }
 853
 854         return 0;
 855 }
 856
 857 bool
 858 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 859 {
 860         if (ev->button == 1) {
 861                 if (_selection.selected (strip)) {
 862                         /* primary-click: toggle selection state of strip */
 863                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 864                                 _selection.remove (strip);
 865                         } else if (_selection.axes.size() > 1) {
 866                                 /* de-select others */
 867                                 _selection.set (strip);
 868                         }
 869                 } else {
 870                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 871                                 _selection.add (strip);
 872                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 873
 874                                 /* extend selection */
 875
 876                                 vector<MixerStrip*> tmp;
 877                                 bool accumulate = false;
 878                                 bool found_another = false;
 879
 880                                 tmp.push_back (strip);
 881
 882                                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 883                                         if ((*i) == strip) {
 884                                                 /* hit clicked strip, start accumulating till we hit the first
 885                                                    selected strip
 886                                                 */
 887                                                 if (accumulate) {
 888                                                         /* done */
 889                                                         break;
 890                                                 } else {
 891                                                         accumulate = true;
 892                                                 }
 893                                         } else if (_selection.selected (*i)) {
 894                                                 /* hit selected strip. if currently accumulating others,
 895                                                    we're done. if not accumulating others, start doing so.
 896                                                 */
 897                                                 found_another = true;
 898                                                 if (accumulate) {
 899                                                         /* done */
 900                                                         break;
 901                                                 } else {
 902                                                         accumulate = true;
 903                                                 }
 904                                         } else {
 905                                                 if (accumulate) {
 906                                                         tmp.push_back (*i);
 907                                                 }
 908                                         }
 909                                 }
 910
 911                                 if (found_another) {
 912                                         for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 913                                                 _selection.add (*i);
 914                                         }
 915                                 } else
 916                                         _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
 917                         } else {
 918                                 _selection.set (strip);
 919                         }
 920                 }
 921         }
 922
 923         return true;
 924 }
 925
 926 void
 927 Mixer_UI::set_session (Session* sess)
 928 {
 929         SessionHandlePtr::set_session (sess);
 930
 931         if (_plugin_selector) {
 932                 _plugin_selector->set_session (_session);
 933         }
 934
 935         _group_tabs->set_session (sess);
 936
 937         if (!_session) {
 938                 return;
 939         }
 940
 941         refill_favorite_plugins();
 942
 943         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 944         set_state (*node, 0);
 945
 946         update_title ();
 947
 948         initial_track_display ();
 949
 950         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_routes, this, _1), gui_context());
 951         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 952         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 953         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 954         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 955         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 956         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 957
 958         _session->vca_manager().VCAAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_masters, this, _1), gui_context());
 959
 960         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 961
 962         route_groups_changed ();
 963
 964         if (_visible) {
 965                 show_window();
 966         }
 967         start_updating ();
 968 }
 969
 970 void
 971 Mixer_UI::session_going_away ()
 972 {
 973         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 974
 975         _in_group_rebuild_or_clear = true;
 976         group_model->clear ();
 977         _in_group_rebuild_or_clear = false;
 978
 979         _selection.clear ();
 980         track_model->clear ();
 981
 982         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 983                 delete (*i);
 984         }
 985
 986         if (_monitor_section) {
 987                 _monitor_section->tearoff().hide_visible ();
 988         }
 989
 990         monitor_section_detached ();
 991
 992         strips.clear ();
 993
 994         stop_updating ();
 995
 996         SessionHandlePtr::session_going_away ();
 997
 998         _session = 0;
 999         update_title ();
1000 }
1001
1002 void
1003 Mixer_UI::track_visibility_changed (std::string const & path)
1004 {
1005         if (_session && _session->deletion_in_progress()) {
1006                 return;
1007         }
1008
1009         TreeIter iter;
1010
1011         if ((iter = track_model->get_iter (path))) {
1012
1013                 AxisView* av = (*iter)[stripable_columns.strip];
1014                 bool visible = (*iter)[stripable_columns.visible];
1015
1016                 if (av->set_marked_for_display (!visible)) {
1017                         update_track_visibility ();
1018                 }
1019         }
1020 }
1021
1022 void
1023 Mixer_UI::update_track_visibility ()
1024 {
1025         TreeModel::Children rows = track_model->children();
1026         TreeModel::Children::iterator i;
1027
1028         {
1029                 Unwinder<bool> uw (no_track_list_redisplay, true);
1030
1031                 for (i = rows.begin(); i != rows.end(); ++i) {
1032                         AxisView* av = (*i)[stripable_columns.strip];
1033                         (*i)[stripable_columns.visible] = av->marked_for_display ();
1034                 }
1035
1036                 /* force presentation catch up with visibility changes
1037                  */
1038
1039                 sync_presentation_info_from_treeview ();
1040         }
1041
1042         redisplay_track_list ();
1043 }
1044
1045 void
1046 Mixer_UI::show_strip (MixerStrip* ms)
1047 {
1048         TreeModel::Children rows = track_model->children();
1049         TreeModel::Children::iterator i;
1050
1051         for (i = rows.begin(); i != rows.end(); ++i) {
1052
1053                 AxisView* av = (*i)[stripable_columns.strip];
1054                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1055                 if (strip == ms) {
1056                         (*i)[stripable_columns.visible] = true;
1057                         redisplay_track_list ();
1058                         break;
1059                 }
1060         }
1061 }
1062
1063 void
1064 Mixer_UI::hide_strip (MixerStrip* ms)
1065 {
1066         TreeModel::Children rows = track_model->children();
1067         TreeModel::Children::iterator i;
1068
1069         for (i = rows.begin(); i != rows.end(); ++i) {
1070
1071                 AxisView* av = (*i)[stripable_columns.strip];
1072                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1073                 if (strip == ms) {
1074                         (*i)[stripable_columns.visible] = false;
1075                         redisplay_track_list ();
1076                         break;
1077                 }
1078         }
1079 }
1080
1081 gint
1082 Mixer_UI::start_updating ()
1083 {
1084     fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
1085     return 0;
1086 }
1087
1088 gint
1089 Mixer_UI::stop_updating ()
1090 {
1091     fast_screen_update_connection.disconnect();
1092     return 0;
1093 }
1094
1095 void
1096 Mixer_UI::fast_update_strips ()
1097 {
1098         if (_content.is_mapped () && _session) {
1099                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1100                         (*i)->fast_update ();
1101                 }
1102         }
1103 }
1104
1105 void
1106 Mixer_UI::set_all_strips_visibility (bool yn)
1107 {
1108         TreeModel::Children rows = track_model->children();
1109         TreeModel::Children::iterator i;
1110
1111         {
1112                 Unwinder<bool> uw (no_track_list_redisplay, true);
1113
1114                 for (i = rows.begin(); i != rows.end(); ++i) {
1115
1116                         AxisView* av = (*i)[stripable_columns.strip];
1117                         MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1118
1119                         if (!strip) {
1120                                 continue;
1121                         }
1122
1123                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1124                                 continue;
1125                         }
1126
1127                         (*i)[stripable_columns.visible] = yn;
1128                 }
1129         }
1130
1131         redisplay_track_list ();
1132 }
1133
1134
1135 void
1136 Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
1137 {
1138         TreeModel::Children rows = track_model->children();
1139         TreeModel::Children::iterator i;
1140
1141         {
1142                 Unwinder<bool> uw (no_track_list_redisplay, true);
1143
1144                 for (i = rows.begin(); i != rows.end(); ++i) {
1145
1146                         AxisView* av = (*i)[stripable_columns.strip];
1147                         MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1148
1149                         if (!strip) {
1150                                 continue;
1151                         }
1152
1153                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1154                                 continue;
1155                         }
1156
1157                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
1158                         boost::shared_ptr<MidiTrack> mt = strip->midi_track();
1159
1160                         switch (tracks) {
1161                         case 0:
1162                                 (*i)[stripable_columns.visible] = yn;
1163                                 break;
1164
1165                         case 1:
1166                                 if (at) { /* track */
1167                                         (*i)[stripable_columns.visible] = yn;
1168                                 }
1169                                 break;
1170
1171                         case 2:
1172                                 if (!at && !mt) { /* bus */
1173                                         (*i)[stripable_columns.visible] = yn;
1174                                 }
1175                                 break;
1176
1177                         case 3:
1178                                 if (mt) { /* midi-track */
1179                                         (*i)[stripable_columns.visible] = yn;
1180                                 }
1181                                 break;
1182                         }
1183                 }
1184         }
1185
1186         redisplay_track_list ();
1187 }
1188
1189 void
1190 Mixer_UI::hide_all_routes ()
1191 {
1192         set_all_strips_visibility (false);
1193 }
1194
1195 void
1196 Mixer_UI::show_all_routes ()
1197 {
1198         set_all_strips_visibility (true);
1199 }
1200
1201 void
1202 Mixer_UI::show_all_audiobus ()
1203 {
1204         set_all_audio_midi_visibility (2, true);
1205 }
1206 void
1207 Mixer_UI::hide_all_audiobus ()
1208 {
1209         set_all_audio_midi_visibility (2, false);
1210 }
1211
1212 void
1213 Mixer_UI::show_all_audiotracks()
1214 {
1215         set_all_audio_midi_visibility (1, true);
1216 }
1217 void
1218 Mixer_UI::hide_all_audiotracks ()
1219 {
1220         set_all_audio_midi_visibility (1, false);
1221 }
1222
1223 void
1224 Mixer_UI::show_all_miditracks()
1225 {
1226         set_all_audio_midi_visibility (3, true);
1227 }
1228 void
1229 Mixer_UI::hide_all_miditracks ()
1230 {
1231         set_all_audio_midi_visibility (3, false);
1232 }
1233
1234 void
1235 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1236 {
1237         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1238         sync_presentation_info_from_treeview ();
1239 }
1240
1241 void
1242 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1243 {
1244         /* this happens as the second step of a DnD within the treeview as well
1245            as when a row/route is actually deleted.
1246
1247            if it was a deletion then we have to force a redisplay because
1248            order keys may not have changed.
1249         */
1250
1251         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1252         sync_presentation_info_from_treeview ();
1253
1254         if (_route_deletion_in_progress) {
1255                 redisplay_track_list ();
1256         }
1257 }
1258
1259 void
1260 Mixer_UI::spill_redisplay (boost::shared_ptr<VCA> vca)
1261 {
1262         TreeModel::Children rows = track_model->children();
1263
1264         for (TreeModel::Children::iterator i = rows.begin(); i != rows.end(); ++i) {
1265
1266                 AxisView* av = (*i)[stripable_columns.strip];
1267                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1268
1269                 if (!strip) {
1270                         /* we're in the middle of changing a row, don't worry */
1271                         continue;
1272                 }
1273
1274                 if (!strip->route()) {
1275                         /* non-route element */
1276                         continue;
1277                 }
1278
1279                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1280                         continue;
1281                 }
1282
1283                 if (strip->route()->slaved_to (vca)) {
1284
1285                         if (strip->packed()) {
1286                                 strip_packer.reorder_child (*strip, -1); /* put at end */
1287                         } else {
1288                                 strip_packer.pack_start (*strip, false, false);
1289                                 strip->set_packed (true);
1290                         }
1291
1292                 } else {
1293
1294                         if (strip->packed()) {
1295                                 strip_packer.remove (*strip);
1296                                 strip->set_packed (false);
1297                         }
1298                 }
1299         }
1300 }
1301
1302 void
1303 Mixer_UI::redisplay_track_list ()
1304 {
1305         if (no_track_list_redisplay) {
1306                 return;
1307         }
1308
1309         boost::shared_ptr<VCA> sv = spilled_vca.lock ();
1310
1311         if (sv) {
1312                 spill_redisplay (sv);
1313                 return;
1314         }
1315
1316         TreeModel::Children rows = track_model->children();
1317         TreeModel::Children::iterator i;
1318         uint32_t n_masters = 0;
1319
1320         container_clear (vca_hpacker);
1321         vca_hpacker.pack_end (vca_scroller_base, true, true);
1322
1323         for (i = rows.begin(); i != rows.end(); ++i) {
1324
1325                 AxisView* s = (*i)[stripable_columns.strip];
1326                 bool const visible = (*i)[stripable_columns.visible];
1327                 boost::shared_ptr<Stripable> stripable = (*i)[stripable_columns.stripable];
1328
1329                 if (!s) {
1330                         /* we're in the middle of changing a row, don't worry */
1331                         continue;
1332                 }
1333
1334                 VCAMasterStrip* vms;
1335
1336                 if ((vms = dynamic_cast<VCAMasterStrip*> (s))) {
1337                         if (visible) {
1338                                 vca_hpacker.pack_start (*vms, false, false);
1339                                 vms->show ();
1340                                 n_masters++;
1341                         }
1342                         continue;
1343                 }
1344
1345                 MixerStrip* strip = dynamic_cast<MixerStrip*> (s);
1346
1347                 if (!strip) {
1348                         continue;
1349                 }
1350
1351                 if (visible) {
1352
1353                         if (strip->packed()) {
1354                                 strip_packer.reorder_child (*strip, -1); /* put at end */
1355                         } else {
1356                                 strip_packer.pack_start (*strip, false, false);
1357                                 strip->set_packed (true);
1358                         }
1359
1360                 } else {
1361
1362                         if (stripable->is_master() || stripable->is_monitor()) {
1363                                 /* do nothing, these cannot be hidden */
1364                         } else {
1365                                 if (strip->packed()) {
1366                                         strip_packer.remove (*strip);
1367                                         strip->set_packed (false);
1368                                 }
1369                         }
1370                 }
1371         }
1372
1373         /* update visibility of VCA assign buttons */
1374
1375         if (n_masters == 0) {
1376                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::remove_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1377                 vca_vpacker.hide ();
1378         } else {
1379                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::add_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1380                 vca_vpacker.show ();
1381         }
1382
1383         _group_tabs->set_dirty ();
1384 }
1385
1386 void
1387 Mixer_UI::strip_width_changed ()
1388 {
1389         _group_tabs->set_dirty ();
1390
1391 #ifdef __APPLE__
1392         TreeModel::Children rows = track_model->children();
1393         TreeModel::Children::iterator i;
1394         long order;
1395
1396         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1397                 AxisView* av = (*i)[stripable_columns.strip];
1398                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1399
1400                 if (strip == 0) {
1401                         continue;
1402                 }
1403
1404                 bool visible = (*i)[stripable_columns.visible];
1405
1406                 if (visible) {
1407                         strip->queue_draw();
1408                 }
1409         }
1410 #endif
1411
1412 }
1413
1414 struct PresentationInfoMixerSorter
1415 {
1416         bool operator() (boost::shared_ptr<Stripable> a, boost::shared_ptr<Stripable> b) {
1417                 if (a->is_master()) {
1418                         /* master after everything else */
1419                         return false;
1420                 } else if (b->is_master()) {
1421                         /* everything else before master */
1422                         return true;
1423                 }
1424                 return a->presentation_info().order () < b->presentation_info().order ();
1425         }
1426 };
1427
1428 void
1429 Mixer_UI::initial_track_display ()
1430 {
1431         StripableList sl;
1432
1433         boost::shared_ptr<RouteList> routes = _session->get_routes();
1434
1435         for (RouteList::iterator r = routes->begin(); r != routes->end(); ++r) {
1436                 sl.push_back (*r);
1437         }
1438
1439         VCAList vcas = _session->vca_manager().vcas();
1440
1441         for (VCAList::iterator v = vcas.begin(); v != vcas.end(); ++v) {
1442                 sl.push_back (boost::dynamic_pointer_cast<Stripable> (*v));
1443         }
1444
1445         sl.sort (PresentationInfoMixerSorter());
1446
1447         {
1448                 /* These are also used inside ::add_stripables() but we need
1449                  *  them here because we're going to clear the track_model also.
1450                  */
1451                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1452                 Unwinder<bool> uw2 (ignore_reorder, true);
1453
1454                 track_model->clear ();
1455                 add_stripables (sl);
1456         }
1457
1458         redisplay_track_list ();
1459 }
1460
1461 void
1462 Mixer_UI::show_track_list_menu ()
1463 {
1464         if (track_menu == 0) {
1465                 build_track_menu ();
1466         }
1467
1468         track_menu->popup (1, gtk_get_current_event_time());
1469 }
1470
1471 bool
1472 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1473 {
1474         if (Keyboard::is_context_menu_event (ev)) {
1475                 show_track_list_menu ();
1476                 return true;
1477         }
1478
1479         return false;
1480 }
1481
1482 void
1483 Mixer_UI::build_track_menu ()
1484 {
1485         using namespace Menu_Helpers;
1486         using namespace Gtk;
1487
1488         track_menu = new Menu;
1489         track_menu->set_name ("ArdourContextMenu");
1490         MenuList& items = track_menu->items();
1491
1492         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1493         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1494         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1495         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1496         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1497         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1498         items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
1499         items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
1500
1501 }
1502
1503 void
1504 Mixer_UI::stripable_property_changed (const PropertyChange& what_changed, boost::weak_ptr<Stripable> ws)
1505 {
1506         if (!what_changed.contains (ARDOUR::Properties::hidden) && !what_changed.contains (ARDOUR::Properties::name)) {
1507                 return;
1508         }
1509
1510         boost::shared_ptr<Stripable> s = ws.lock ();
1511
1512         if (!s) {
1513                 return;
1514         }
1515
1516         TreeModel::Children rows = track_model->children();
1517         TreeModel::Children::iterator i;
1518
1519         for (i = rows.begin(); i != rows.end(); ++i) {
1520                 boost::shared_ptr<Stripable> ss = (*i)[stripable_columns.stripable];
1521
1522                 if (s == ss) {
1523
1524                         if (what_changed.contains (ARDOUR::Properties::name)) {
1525                                 (*i)[stripable_columns.text] = s->name();
1526                         }
1527
1528                         if (what_changed.contains (ARDOUR::Properties::hidden)) {
1529                                 (*i)[stripable_columns.visible] = !s->presentation_info().hidden();
1530                                 redisplay_track_list ();
1531                         }
1532
1533                         return;
1534                 }
1535         }
1536
1537         error << _("track display list item for renamed strip not found!") << endmsg;
1538 }
1539
1540 bool
1541 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1542 {
1543         TreeModel::Path path;
1544         TreeViewColumn* column;
1545         int cellx;
1546         int celly;
1547
1548         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1549                 _group_tabs->get_menu(0)->popup (1, ev->time);
1550                 return true;
1551         }
1552
1553         TreeIter iter = group_model->get_iter (path);
1554         if (!iter) {
1555                 _group_tabs->get_menu(0)->popup (1, ev->time);
1556                 return true;
1557         }
1558
1559         RouteGroup* group = (*iter)[group_columns.group];
1560
1561         if (Keyboard::is_context_menu_event (ev)) {
1562                 _group_tabs->get_menu(group)->popup (1, ev->time);
1563                 return true;
1564         }
1565
1566         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1567         case 1:
1568                 if (Keyboard::is_edit_event (ev)) {
1569                         if (group) {
1570                                 // edit_route_group (group);
1571 #ifdef __APPLE__
1572                                 group_display.queue_draw();
1573 #endif
1574                                 return true;
1575                         }
1576                 }
1577                 break;
1578
1579         case 0:
1580         {
1581                 bool visible = (*iter)[group_columns.visible];
1582                 (*iter)[group_columns.visible] = !visible;
1583 #ifdef __APPLE__
1584                 group_display.queue_draw();
1585 #endif
1586                 return true;
1587         }
1588
1589         default:
1590                 break;
1591         }
1592
1593         return false;
1594  }
1595
1596 void
1597 Mixer_UI::activate_all_route_groups ()
1598 {
1599         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1600 }
1601
1602 void
1603 Mixer_UI::disable_all_route_groups ()
1604 {
1605         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1606 }
1607
1608 void
1609 Mixer_UI::route_groups_changed ()
1610 {
1611         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1612
1613         _in_group_rebuild_or_clear = true;
1614
1615         /* just rebuild the while thing */
1616
1617         group_model->clear ();
1618
1619 #if 0
1620         /* this is currently not used,
1621          * Mixer_UI::group_display_button_press() has a case for it,
1622          * and a commented edit_route_group() but that's n/a since 2011.
1623          *
1624          * This code is left as reminder that
1625          * row[group_columns.group] = 0 has special meaning.
1626          */
1627         {
1628                 TreeModel::Row row;
1629                 row = *(group_model->append());
1630                 row[group_columns.visible] = true;
1631                 row[group_columns.text] = (_("-all-"));
1632                 row[group_columns.group] = 0;
1633         }
1634 #endif
1635
1636         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1637
1638         _group_tabs->set_dirty ();
1639         _in_group_rebuild_or_clear = false;
1640 }
1641
1642 void
1643 Mixer_UI::new_route_group ()
1644 {
1645         _group_tabs->run_new_group_dialog (0, false);
1646 }
1647
1648 void
1649 Mixer_UI::remove_selected_route_group ()
1650 {
1651         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1652         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1653
1654         if (rows.empty()) {
1655                 return;
1656         }
1657
1658         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1659         TreeIter iter;
1660
1661         /* selection mode is single, so rows.begin() is it */
1662
1663         if ((iter = group_model->get_iter (*i))) {
1664
1665                 RouteGroup* rg = (*iter)[group_columns.group];
1666
1667                 if (rg) {
1668                         _session->remove_route_group (*rg);
1669                 }
1670         }
1671 }
1672
1673 void
1674 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1675 {
1676         if (in_group_row_change) {
1677                 return;
1678         }
1679
1680         /* force an update of any mixer strips that are using this group,
1681            otherwise mix group names don't change in mixer strips
1682         */
1683
1684         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1685                 if ((*i)->route_group() == group) {
1686                         (*i)->route_group_changed();
1687                 }
1688         }
1689
1690         TreeModel::iterator i;
1691         TreeModel::Children rows = group_model->children();
1692         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1693
1694         in_group_row_change = true;
1695
1696         for (i = rows.begin(); i != rows.end(); ++i) {
1697                 if ((*i)[group_columns.group] == group) {
1698                         (*i)[group_columns.visible] = !group->is_hidden ();
1699                         (*i)[group_columns.text] = group->name ();
1700                         break;
1701                 }
1702         }
1703
1704         in_group_row_change = false;
1705
1706         if (change.contains (Properties::name)) {
1707                 _group_tabs->set_dirty ();
1708         }
1709
1710         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1711                 if ((*j)->route_group() == group) {
1712                         if (group->is_hidden ()) {
1713                                 hide_strip (*j);
1714                         } else {
1715                                 show_strip (*j);
1716                         }
1717                 }
1718         }
1719 }
1720
1721 void
1722 Mixer_UI::show_mixer_list (bool yn)
1723 {
1724         if (yn) {
1725                 list_vpacker.show ();
1726         } else {
1727                 list_vpacker.hide ();
1728         }
1729
1730         _show_mixer_list = yn;
1731 }
1732
1733 void
1734 Mixer_UI::show_monitor_section (bool yn)
1735 {
1736         if (!monitor_section()) {
1737                 return;
1738         }
1739         if (monitor_section()->tearoff().torn_off()) {
1740                 return;
1741         }
1742
1743         if (yn) {
1744                 monitor_section()->tearoff().show();
1745         } else {
1746                 monitor_section()->tearoff().hide();
1747         }
1748 }
1749
1750 void
1751 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1752 {
1753         RouteGroup* group;
1754         TreeIter iter;
1755
1756         if ((iter = group_model->get_iter (path))) {
1757
1758                 if ((group = (*iter)[group_columns.group]) == 0) {
1759                         return;
1760                 }
1761
1762                 if (new_text != group->name()) {
1763                         group->set_name (new_text);
1764                 }
1765         }
1766 }
1767
1768 void
1769 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1770 {
1771         RouteGroup* group;
1772
1773         if (in_group_row_change) {
1774                 return;
1775         }
1776
1777         if ((group = (*iter)[group_columns.group]) == 0) {
1778                 return;
1779         }
1780
1781         std::string name = (*iter)[group_columns.text];
1782
1783         if (name != group->name()) {
1784                 group->set_name (name);
1785         }
1786
1787         bool hidden = !(*iter)[group_columns.visible];
1788
1789         if (hidden != group->is_hidden ()) {
1790                 group->set_hidden (hidden, this);
1791         }
1792 }
1793
1794 /** Called when a group model row is deleted, but also when the model is
1795  *  reordered by a user drag-and-drop; the latter is what we are
1796  *  interested in here.
1797  */
1798 void
1799 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1800 {
1801         if (_in_group_rebuild_or_clear) {
1802                 return;
1803         }
1804
1805         /* Re-write the session's route group list so that the new order is preserved */
1806
1807         list<RouteGroup*> new_list;
1808
1809         Gtk::TreeModel::Children children = group_model->children();
1810         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1811                 RouteGroup* g = (*i)[group_columns.group];
1812                 if (g) {
1813                         new_list.push_back (g);
1814                 }
1815         }
1816
1817         _session->reorder_route_groups (new_list);
1818 }
1819
1820
1821 void
1822 Mixer_UI::add_route_group (RouteGroup* group)
1823 {
1824         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1825         bool focus = false;
1826
1827         in_group_row_change = true;
1828
1829         TreeModel::Row row = *(group_model->append());
1830         row[group_columns.visible] = !group->is_hidden ();
1831         row[group_columns.group] = group;
1832         if (!group->name().empty()) {
1833                 row[group_columns.text] = group->name();
1834         } else {
1835                 row[group_columns.text] = _("unnamed");
1836                 focus = true;
1837         }
1838
1839         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1840
1841         if (focus) {
1842                 TreeViewColumn* col = group_display.get_column (0);
1843                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (1));
1844                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1845         }
1846
1847         _group_tabs->set_dirty ();
1848
1849         in_group_row_change = false;
1850 }
1851
1852 bool
1853 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1854 {
1855         using namespace Menu_Helpers;
1856
1857         if (Keyboard::is_context_menu_event (ev)) {
1858                 ARDOUR_UI::instance()->add_route ();
1859                 return true;
1860         }
1861
1862         return false;
1863 }
1864
1865 void
1866 Mixer_UI::scroller_drag_data_received (const Glib::RefPtr<Gdk::DragContext>& context, int x, int y, const Gtk::SelectionData& data, guint info, guint time)
1867 {
1868         printf ("Mixer_UI::scroller_drag_data_received\n");
1869         if (data.get_target() != "PluginFavoritePtr") {
1870                 context->drag_finish (false, false, time);
1871                 return;
1872         }
1873
1874         const void * d = data.get_data();
1875         const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>* tv = reinterpret_cast<const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>*>(d);
1876
1877         PluginPresetList nfos;
1878         TreeView* source;
1879         tv->get_object_drag_data (nfos, &source);
1880
1881         Route::ProcessorList pl;
1882         bool ok = false;
1883
1884         for (list<PluginPresetPtr>::const_iterator i = nfos.begin(); i != nfos.end(); ++i) {
1885                 PluginPresetPtr ppp = (*i);
1886                 PluginInfoPtr pip = ppp->_pip;
1887                 if (!pip->is_instrument ()) {
1888                         continue;
1889                 }
1890                 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);
1891                 ok = true;
1892         }
1893
1894         context->drag_finish (ok, false, time);
1895 }
1896
1897 void
1898 Mixer_UI::set_strip_width (Width w, bool save)
1899 {
1900         _strip_width = w;
1901
1902         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1903                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1904         }
1905 }
1906
1907
1908 struct PluginStateSorter {
1909 public:
1910         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
1911                 std::list<std::string>::const_iterator aiter = std::find(_user.begin(), _user.end(), (*a).unique_id);
1912                 std::list<std::string>::const_iterator biter = std::find(_user.begin(), _user.end(), (*b).unique_id);
1913                 if (aiter != _user.end() && biter != _user.end()) {
1914                         return std::distance (_user.begin(), aiter)  < std::distance (_user.begin(), biter);
1915                 }
1916                 if (aiter != _user.end()) {
1917                         return true;
1918                 }
1919                 if (biter != _user.end()) {
1920                         return false;
1921                 }
1922                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
1923         }
1924
1925         PluginStateSorter(std::list<std::string> user) : _user (user)  {}
1926 private:
1927         std::list<std::string> _user;
1928 };
1929
1930 int
1931 Mixer_UI::set_state (const XMLNode& node, int version)
1932 {
1933         XMLProperty const * prop;
1934         LocaleGuard lg;
1935
1936         Tabbable::set_state (node, version);
1937
1938         if ((prop = node.property ("narrow-strips"))) {
1939                 if (string_is_affirmative (prop->value())) {
1940                         set_strip_width (Narrow);
1941                 } else {
1942                         set_strip_width (Wide);
1943                 }
1944         }
1945
1946         if ((prop = node.property ("show-mixer"))) {
1947                 if (string_is_affirmative (prop->value())) {
1948                        _visible = true;
1949                 }
1950         }
1951
1952         if ((prop = node.property ("maximised"))) {
1953                 bool yn = string_is_affirmative (prop->value());
1954                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1955                 assert (act);
1956                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1957                 bool fs = tact && tact->get_active();
1958                 if (yn ^ fs) {
1959                         ActionManager::do_action ("Common", "ToggleMaximalMixer");
1960                 }
1961         }
1962
1963         if ((prop = node.property ("show-mixer-list"))) {
1964                 bool yn = string_is_affirmative (prop->value());
1965                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMixerList"));
1966                 assert (act);
1967                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1968
1969                 /* do it twice to force the change */
1970                 tact->set_active (!yn);
1971                 tact->set_active (yn);
1972         }
1973
1974
1975         XMLNode* plugin_order;
1976         if ((plugin_order = find_named_node (node, "PluginOrder")) != 0) {
1977                 store_current_favorite_order ();
1978                 std::list<string> order;
1979                 const XMLNodeList& kids = plugin_order->children("PluginInfo");
1980                 XMLNodeConstIterator i;
1981                 for (i = kids.begin(); i != kids.end(); ++i) {
1982                         if ((prop = (*i)->property ("unique-id"))) {
1983                                 std::string unique_id = prop->value();
1984                                 order.push_back (unique_id);
1985                                 if ((prop = (*i)->property ("expanded"))) {
1986                                         favorite_ui_state[unique_id] = string_is_affirmative (prop->value());
1987                                 }
1988                         }
1989                 }
1990                 PluginStateSorter cmp (order);
1991                 favorite_order.sort (cmp);
1992                 sync_treeview_from_favorite_order ();
1993         }
1994         return 0;
1995 }
1996
1997 XMLNode&
1998 Mixer_UI::get_state ()
1999 {
2000         XMLNode* node = new XMLNode (X_("Mixer"));
2001         char buf[128];
2002         LocaleGuard lg;
2003
2004         node->add_child_nocopy (Tabbable::get_state());
2005
2006         snprintf(buf,sizeof(buf), "%f", rhs_pane1.get_divider());
2007         node->add_property(X_("mixer-rhs-pane1-pos"), string(buf));
2008         snprintf(buf,sizeof(buf), "%f", rhs_pane2.get_divider());
2009         node->add_property(X_("mixer-rhs_pane2-pos"), string(buf));
2010         snprintf(buf,sizeof(buf), "%f", list_hpane.get_divider());
2011         node->add_property(X_("mixer-list-hpane-pos"), string(buf));
2012         snprintf(buf,sizeof(buf), "%f", inner_pane.get_divider());
2013         node->add_property(X_("mixer-inner-pane-pos"), string(buf));
2014
2015         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
2016         node->add_property ("show-mixer", _visible ? "yes" : "no");
2017         node->add_property ("show-mixer-list", _show_mixer_list ? "yes" : "no");
2018         node->add_property ("maximised", _maximised ? "yes" : "no");
2019
2020         store_current_favorite_order ();
2021         XMLNode* plugin_order = new XMLNode ("PluginOrder");
2022         int cnt = 0;
2023         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i, ++cnt) {
2024                 XMLNode* p = new XMLNode ("PluginInfo");
2025                 p->add_property ("sort", cnt);
2026                 p->add_property ("unique-id", (*i)->unique_id);
2027                 if (favorite_ui_state.find ((*i)->unique_id) != favorite_ui_state.end ()) {
2028                         p->add_property ("expanded", favorite_ui_state[(*i)->unique_id]);
2029                 }
2030                 plugin_order->add_child_nocopy (*p);
2031         }
2032         node->add_child_nocopy (*plugin_order);
2033
2034         return *node;
2035 }
2036
2037 void
2038 Mixer_UI::scroll_left ()
2039 {
2040         if (!scroller.get_hscrollbar()) return;
2041         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2042         /* stupid GTK: can't rely on clamping across versions */
2043         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
2044 }
2045
2046 void
2047 Mixer_UI::scroll_right ()
2048 {
2049         if (!scroller.get_hscrollbar()) return;
2050         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2051         /* stupid GTK: can't rely on clamping across versions */
2052         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
2053 }
2054
2055 bool
2056 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
2057 {
2058         switch (ev->direction) {
2059         case GDK_SCROLL_LEFT:
2060                 scroll_left ();
2061                 return true;
2062         case GDK_SCROLL_UP:
2063                 if (ev->state & Keyboard::TertiaryModifier) {
2064                         scroll_left ();
2065                         return true;
2066                 }
2067                 return false;
2068
2069         case GDK_SCROLL_RIGHT:
2070                 scroll_right ();
2071                 return true;
2072
2073         case GDK_SCROLL_DOWN:
2074                 if (ev->state & Keyboard::TertiaryModifier) {
2075                         scroll_right ();
2076                         return true;
2077                 }
2078                 return false;
2079         }
2080
2081         return false;
2082 }
2083
2084
2085 void
2086 Mixer_UI::parameter_changed (string const & p)
2087 {
2088         if (p == "show-group-tabs") {
2089                 bool const s = _session->config.get_show_group_tabs ();
2090                 if (s) {
2091                         _group_tabs->show ();
2092                 } else {
2093                         _group_tabs->hide ();
2094                 }
2095         } else if (p == "default-narrow_ms") {
2096                 bool const s = UIConfiguration::instance().get_default_narrow_ms ();
2097                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2098                         (*i)->set_width_enum (s ? Narrow : Wide, this);
2099                 }
2100         } else if (p == "use-monitor-bus") {
2101                 if (_session && !_session->monitor_out()) {
2102                         monitor_section_detached ();
2103                 }
2104         }
2105 }
2106
2107 void
2108 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
2109 {
2110         g->set_active (a, this);
2111 }
2112
2113 PluginSelector*
2114 Mixer_UI::plugin_selector()
2115 {
2116 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
2117         if (!_plugin_selector)
2118                 _plugin_selector = new PluginSelector (PluginManager::instance());
2119 #endif
2120
2121         return _plugin_selector;
2122 }
2123
2124 void
2125 Mixer_UI::setup_track_display ()
2126 {
2127         track_model = ListStore::create (stripable_columns);
2128         track_display.set_model (track_model);
2129         track_display.append_column (_("Show"), stripable_columns.visible);
2130         track_display.append_column (_("Strips"), stripable_columns.text);
2131         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
2132         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
2133         track_display.get_column (0)->set_expand(false);
2134         track_display.get_column (1)->set_expand(true);
2135         track_display.get_column (1)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
2136         track_display.set_name (X_("EditGroupList"));
2137         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
2138         track_display.set_reorderable (true);
2139         track_display.set_headers_visible (true);
2140         track_display.set_can_focus(false);
2141
2142         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
2143         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
2144
2145         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (0));
2146         track_list_visible_cell->property_activatable() = true;
2147         track_list_visible_cell->property_radio() = false;
2148         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
2149
2150         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
2151
2152         track_display_scroller.add (track_display);
2153         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
2154
2155         VBox* v = manage (new VBox);
2156         v->show ();
2157         v->pack_start (track_display_scroller, true, true);
2158
2159         Button* b = manage (new Button);
2160         b->show ();
2161         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
2162         w->show ();
2163         b->add (*w);
2164
2165         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
2166
2167         v->pack_start (*b, false, false);
2168
2169         track_display_frame.set_name("BaseFrame");
2170         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
2171         track_display_frame.add (*v);
2172
2173         track_display_scroller.show();
2174         track_display_frame.show();
2175         track_display.show();
2176 }
2177
2178 void
2179 Mixer_UI::new_track_or_bus ()
2180 {
2181         ARDOUR_UI::instance()->add_route ();
2182 }
2183
2184 void
2185 Mixer_UI::update_title ()
2186 {
2187         if (!own_window()) {
2188                 return;
2189         }
2190
2191         if (_session) {
2192                 string n;
2193
2194                 if (_session->snap_name() != _session->name()) {
2195                         n = _session->snap_name ();
2196                 } else {
2197                         n = _session->name ();
2198                 }
2199
2200                 if (_session->dirty ()) {
2201                         n = "*" + n;
2202                 }
2203
2204                 WindowTitle title (n);
2205                 title += S_("Window|Mixer");
2206                 title += Glib::get_application_name ();
2207                 own_window()->set_title (title.get_string());
2208
2209         } else {
2210
2211                 WindowTitle title (S_("Window|Mixer"));
2212                 title += Glib::get_application_name ();
2213                 own_window()->set_title (title.get_string());
2214         }
2215 }
2216
2217 MixerStrip*
2218 Mixer_UI::strip_by_x (int x)
2219 {
2220         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2221                 int x1, x2, y;
2222
2223                 (*i)->translate_coordinates (_content, 0, 0, x1, y);
2224                 x2 = x1 + (*i)->get_width();
2225
2226                 if (x >= x1 && x <= x2) {
2227                         return (*i);
2228                 }
2229         }
2230
2231         return 0;
2232 }
2233
2234 void
2235 Mixer_UI::set_axis_targets_for_operation ()
2236 {
2237         _axis_targets.clear ();
2238
2239         if (!_selection.empty()) {
2240                 _axis_targets = _selection.axes;
2241                 return;
2242         }
2243
2244 //  removed "implicit" selections of strips, after discussion on IRC
2245
2246 }
2247
2248 void
2249 Mixer_UI::monitor_section_going_away ()
2250 {
2251         if (_monitor_section) {
2252                 monitor_section_detached ();
2253                 out_packer.remove (_monitor_section->tearoff());
2254                 _monitor_section->set_session (0);
2255                 delete _monitor_section;
2256                 _monitor_section = 0;
2257         }
2258 }
2259
2260 void
2261 Mixer_UI::toggle_midi_input_active (bool flip_others)
2262 {
2263         boost::shared_ptr<RouteList> rl (new RouteList);
2264         bool onoff = false;
2265
2266         set_axis_targets_for_operation ();
2267
2268         for (AxisViewSelection::iterator r = _axis_targets.begin(); r != _axis_targets.end(); ++r) {
2269                 boost::shared_ptr<MidiTrack> mt = boost::dynamic_pointer_cast<MidiTrack> ((*r)->stripable());
2270
2271                 if (mt) {
2272                         rl->push_back (mt);
2273                         onoff = !mt->input_active();
2274                 }
2275         }
2276
2277         _session->set_exclusive_input_active (rl, onoff, flip_others);
2278 }
2279
2280 void
2281 Mixer_UI::maximise_mixer_space ()
2282 {
2283         if (!own_window()) {
2284                 return;
2285         }
2286
2287         if (_maximised) {
2288                 return;
2289         }
2290
2291         _window->fullscreen ();
2292         _maximised = true;
2293 }
2294
2295 void
2296 Mixer_UI::restore_mixer_space ()
2297 {
2298         if (!own_window()) {
2299                 return;
2300         }
2301
2302         if (!_maximised) {
2303                 return;
2304         }
2305
2306         own_window()->unfullscreen();
2307         _maximised = false;
2308 }
2309
2310 void
2311 Mixer_UI::monitor_section_attached ()
2312 {
2313         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2314         Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
2315         act->set_sensitive (true);
2316         tact->set_active ();
2317 }
2318
2319 void
2320 Mixer_UI::monitor_section_detached ()
2321 {
2322         Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
2323         act->set_sensitive (false);
2324 }
2325
2326 void
2327 Mixer_UI::store_current_favorite_order ()
2328 {
2329         typedef Gtk::TreeModel::Children type_children;
2330         type_children children = favorite_plugins_model->children();
2331         favorite_order.clear();
2332         for(type_children::iterator iter = children.begin(); iter != children.end(); ++iter)
2333         {
2334                 Gtk::TreeModel::Row row = *iter;
2335                 ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2336                 favorite_order.push_back (ppp->_pip);
2337                 std::string name = row[favorite_plugins_columns.name];
2338                 favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2339         }
2340 }
2341
2342 void
2343 Mixer_UI::save_favorite_ui_state (const TreeModel::iterator& iter, const TreeModel::Path& path)
2344 {
2345         Gtk::TreeModel::Row row = *iter;
2346         ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2347         assert (ppp);
2348         favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2349 }
2350
2351 void
2352 Mixer_UI::refiller (PluginInfoList& result, const PluginInfoList& plugs)
2353 {
2354         PluginManager& manager (PluginManager::instance());
2355         for (PluginInfoList::const_iterator i = plugs.begin(); i != plugs.end(); ++i) {
2356                 if (manager.get_status (*i) != PluginManager::Favorite) {
2357                         continue;
2358                 }
2359                 result.push_back (*i);
2360         }
2361 }
2362
2363 struct PluginCustomSorter {
2364 public:
2365         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
2366                 PluginInfoList::const_iterator aiter = _user.begin();
2367                 PluginInfoList::const_iterator biter = _user.begin();
2368                 while (aiter != _user.end()) { if ((*aiter)->unique_id == a->unique_id) { break; } ++aiter; }
2369                 while (biter != _user.end()) { if ((*biter)->unique_id == b->unique_id) { break; } ++biter; }
2370
2371                 if (aiter != _user.end() && biter != _user.end()) {
2372                         return std::distance (_user.begin(), aiter) < std::distance (_user.begin(), biter);
2373                 }
2374                 if (aiter != _user.end()) {
2375                         return true;
2376                 }
2377                 if (biter != _user.end()) {
2378                         return false;
2379                 }
2380                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
2381         }
2382         PluginCustomSorter(PluginInfoList user) : _user (user)  {}
2383 private:
2384         PluginInfoList _user;
2385 };
2386
2387 void
2388 Mixer_UI::refill_favorite_plugins ()
2389 {
2390         PluginInfoList plugs;
2391         PluginManager& mgr (PluginManager::instance());
2392
2393 #ifdef LV2_SUPPORT
2394         refiller (plugs, mgr.lv2_plugin_info ());
2395 #endif
2396 #ifdef WINDOWS_VST_SUPPORT
2397         refiller (plugs, mgr.windows_vst_plugin_info ());
2398 #endif
2399 #ifdef LXVST_SUPPORT
2400         refiller (plugs, mgr.lxvst_plugin_info ());
2401 #endif
2402 #ifdef AUDIOUNIT_SUPPORT
2403         refiller (plugs, mgr.au_plugin_info ());
2404 #endif
2405         refiller (plugs, mgr.ladspa_plugin_info ());
2406         refiller (plugs, mgr.lua_plugin_info ());
2407
2408         store_current_favorite_order ();
2409
2410         PluginCustomSorter cmp (favorite_order);
2411         plugs.sort (cmp);
2412
2413         favorite_order = plugs;
2414
2415         sync_treeview_from_favorite_order ();
2416 }
2417
2418 void
2419 Mixer_UI::sync_treeview_favorite_ui_state (const TreeModel::Path& path, const TreeModel::iterator&)
2420 {
2421         TreeIter iter;
2422         if (!(iter = favorite_plugins_model->get_iter (path))) {
2423                 return;
2424         }
2425         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2426         if (!ppp) {
2427                 return;
2428         }
2429         PluginInfoPtr pip = ppp->_pip;
2430         if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2431                 if (favorite_ui_state[pip->unique_id]) {
2432                         favorite_plugins_display.expand_row (path, true);
2433                 }
2434         }
2435 }
2436
2437 void
2438 Mixer_UI::sync_treeview_from_favorite_order ()
2439 {
2440         favorite_plugins_model->clear ();
2441         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i) {
2442                 PluginInfoPtr pip = (*i);
2443
2444                 TreeModel::Row newrow = *(favorite_plugins_model->append());
2445                 newrow[favorite_plugins_columns.name] = (*i)->name;
2446                 newrow[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip));
2447                 if (!_session) {
2448                         continue;
2449                 }
2450
2451                 vector<ARDOUR::Plugin::PresetRecord> presets = (*i)->get_presets (true);
2452                 for (vector<ARDOUR::Plugin::PresetRecord>::const_iterator j = presets.begin(); j != presets.end(); ++j) {
2453                         Gtk::TreeModel::Row child_row = *(favorite_plugins_model->append (newrow.children()));
2454                         child_row[favorite_plugins_columns.name] = (*j).label;
2455                         child_row[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip, &(*j)));
2456                 }
2457                 if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2458                         if (favorite_ui_state[pip->unique_id]) {
2459                                 favorite_plugins_display.expand_row (favorite_plugins_model->get_path(newrow), true);
2460                         }
2461                 }
2462         }
2463 }
2464
2465 void
2466 Mixer_UI::popup_note_context_menu (GdkEventButton *ev)
2467 {
2468         using namespace Gtk::Menu_Helpers;
2469
2470         Gtk::Menu* m = manage (new Menu);
2471         MenuList& items = m->items ();
2472
2473         if (_selection.axes.empty()) {
2474                 items.push_back (MenuElem (_("No Track/Bus is selected.")));
2475         } else {
2476                 items.push_back (MenuElem (_("Add at the top"),
2477                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddTop)));
2478                 items.push_back (MenuElem (_("Add Pre-Fader"),
2479                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPreFader)));
2480                 items.push_back (MenuElem (_("Add Post-Fader"),
2481                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPostFader)));
2482                 items.push_back (MenuElem (_("Add at the end"),
2483                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddBottom)));
2484         }
2485
2486         items.push_back (SeparatorElem());
2487
2488         items.push_back (MenuElem (_("Remove from favorites"), sigc::mem_fun (*this, &Mixer_UI::remove_selected_from_favorites)));
2489
2490         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2491         if (ppp && ppp->_preset.valid && ppp->_preset.user) {
2492                 // we cannot currently delete AU presets
2493                 if (!ppp->_pip || ppp->_pip->type != AudioUnit) {
2494                         items.push_back (MenuElem (_("Delete Preset"), sigc::mem_fun (*this, &Mixer_UI::delete_selected_preset)));
2495                 }
2496         }
2497
2498         m->popup (ev->button, ev->time);
2499 }
2500
2501 bool
2502 Mixer_UI::plugin_row_button_press (GdkEventButton *ev)
2503 {
2504         if ((ev->type == GDK_BUTTON_PRESS) && (ev->button == 3) ) {
2505                 TreeModel::Path path;
2506                 TreeViewColumn* column;
2507                 int cellx, celly;
2508                 if (favorite_plugins_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
2509                         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2510                         if (selection) {
2511                                 selection->unselect_all();
2512                                 selection->select(path);
2513                         }
2514                 }
2515                 ARDOUR::PluginPresetPtr ppp = selected_plugin();
2516                 if (ppp) {
2517                         popup_note_context_menu (ev);
2518                 }
2519         }
2520         return false;
2521 }
2522
2523
2524 PluginPresetPtr
2525 Mixer_UI::selected_plugin ()
2526 {
2527         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2528         if (!selection) {
2529                 return PluginPresetPtr();
2530         }
2531         Gtk::TreeModel::iterator iter = selection->get_selected();
2532         if (!iter) {
2533                 return PluginPresetPtr();
2534         }
2535         return (*iter)[favorite_plugins_columns.plugin];
2536 }
2537
2538 void
2539 Mixer_UI::add_selected_processor (ProcessorPosition pos)
2540 {
2541         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2542         if (ppp) {
2543                 add_favorite_processor (ppp, pos);
2544         }
2545 }
2546
2547 void
2548 Mixer_UI::delete_selected_preset ()
2549 {
2550         if (!_session) {
2551                 return;
2552         }
2553         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2554         if (!ppp || !ppp->_preset.valid || !ppp->_preset.user) {
2555                 return;
2556         }
2557         PluginPtr plugin = ppp->_pip->load (*_session);
2558         plugin->get_presets();
2559         plugin->remove_preset (ppp->_preset.label);
2560 }
2561
2562 void
2563 Mixer_UI::remove_selected_from_favorites ()
2564 {
2565         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2566         if (!ppp) {
2567                 return;
2568         }
2569         PluginManager::PluginStatusType status = PluginManager::Normal;
2570         PluginManager& manager (PluginManager::instance());
2571
2572         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2573         manager.save_statuses ();
2574 }
2575
2576 void
2577 Mixer_UI::plugin_row_activated (const TreeModel::Path& path, TreeViewColumn* column)
2578 {
2579         TreeIter iter;
2580         if (!(iter = favorite_plugins_model->get_iter (path))) {
2581                 return;
2582         }
2583         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2584         add_favorite_processor (ppp, AddPreFader); // TODO: preference?!
2585 }
2586
2587 void
2588 Mixer_UI::add_favorite_processor (ARDOUR::PluginPresetPtr ppp, ProcessorPosition pos)
2589 {
2590         if (!_session || _selection.axes.empty()) {
2591                 return;
2592         }
2593
2594         PluginInfoPtr pip = ppp->_pip;
2595         for (AxisViewSelection::iterator i = _selection.axes.begin(); i != _selection.axes.end(); ++i) {
2596                 boost::shared_ptr<ARDOUR::Route> rt = boost::dynamic_pointer_cast<ARDOUR::Route> ((*i)->stripable());
2597
2598                 if (!rt) {
2599                         continue;
2600                 }
2601
2602                 PluginPtr p = pip->load (*_session);
2603
2604                 if (!p) {
2605                         continue;
2606                 }
2607
2608                 if (ppp->_preset.valid) {
2609                         p->load_preset (ppp->_preset);
2610                 }
2611
2612                 Route::ProcessorStreams err;
2613                 boost::shared_ptr<Processor> processor (new PluginInsert (*_session, p));
2614
2615                 switch (pos) {
2616                         case AddTop:
2617                                 rt->add_processor_by_index (processor, 0, &err, Config->get_new_plugins_active ());
2618                                 break;
2619                         case AddPreFader:
2620                                 rt->add_processor (processor, PreFader, &err, Config->get_new_plugins_active ());
2621                                 break;
2622                         case AddPostFader:
2623                                 {
2624                                         int idx = 0;
2625                                         int pos = 0;
2626                                         for (;;++idx) {
2627                                                 boost::shared_ptr<Processor> np = rt->nth_processor (idx);
2628                                                 if (!np) {
2629                                                         break;
2630                                                 }
2631                                                 if (!np->display_to_user()) {
2632                                                         continue;
2633                                                 }
2634                                                 if (boost::dynamic_pointer_cast<Amp> (np) && // Fader, not Trim
2635                                                                 boost::dynamic_pointer_cast<Amp> (np)->gain_control()->parameter().type() == GainAutomation) {
2636                                                         break;
2637                                                 }
2638                                                 ++pos;
2639                                         }
2640                                         rt->add_processor_by_index (processor, ++pos, &err, Config->get_new_plugins_active ());
2641                                 }
2642                                 break;
2643                         case AddBottom:
2644                                 rt->add_processor_by_index (processor, -1, &err, Config->get_new_plugins_active ());
2645                                 break;
2646                 }
2647         }
2648 }
2649
2650 bool
2651 PluginTreeStore::row_drop_possible_vfunc(const Gtk::TreeModel::Path& dest, const Gtk::SelectionData& data) const
2652 {
2653         if (data.get_target() != "GTK_TREE_MODEL_ROW") {
2654                 return false;
2655         }
2656
2657         // only allow to re-order top-level items
2658         TreePath src;
2659         if (TreePath::get_from_selection_data (data, src)) {
2660                 if (src.up() && src.up()) {
2661                         return false;
2662                 }
2663         }
2664
2665         // don't allow to drop as child-rows.
2666         Gtk::TreeModel::Path _dest = dest; // un const
2667         const bool is_child = _dest.up (); // explicit bool for clang
2668         if (!is_child || _dest.empty ()) {
2669                 return true;
2670         }
2671         return false;
2672 }
2673
2674 void
2675 Mixer_UI::plugin_drop (const Glib::RefPtr<Gdk::DragContext>&, const Gtk::SelectionData& data)
2676 {
2677         if (data.get_target() != "PluginPresetPtr") {
2678                 return;
2679         }
2680         if (data.get_length() != sizeof (PluginPresetPtr)) {
2681                 return;
2682         }
2683         const void *d = data.get_data();
2684         const PluginPresetPtr ppp = *(static_cast<const PluginPresetPtr*> (d));
2685
2686         PluginManager::PluginStatusType status = PluginManager::Favorite;
2687         PluginManager& manager (PluginManager::instance());
2688
2689         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2690         manager.save_statuses ();
2691 }
2692
2693 void
2694 Mixer_UI::do_vca_assign (boost::shared_ptr<VCA> vca)
2695 {
2696         /* call protected MixerActor:: method */
2697         vca_assign (vca);
2698 }
2699
2700 void
2701 Mixer_UI::do_vca_unassign (boost::shared_ptr<VCA> vca)
2702 {
2703         /* call protected MixerActor:: method */
2704         vca_unassign (vca);
2705 }
2706
2707 void
2708 Mixer_UI::show_vca_slaves (boost::shared_ptr<VCA> vca)
2709 {
2710         boost::shared_ptr<VCA> v = spilled_vca.lock();
2711         if (v != vca) {
2712                 spilled_vca = vca;
2713                 show_vca_change (vca); /* EMIT SIGNAL */
2714                 if (vca) {
2715                         _group_tabs->hide ();
2716                 } else {
2717                         _group_tabs->show ();
2718                 }
2719                 redisplay_track_list ();
2720         }
2721 }
2722
2723 bool
2724 Mixer_UI::showing_vca_slaves_for (boost::shared_ptr<VCA> vca) const
2725 {
2726        return vca == spilled_vca.lock();
2727 }