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/unwind.h"
  32
  33 #include <glibmm/threads.h>
  34
  35 #include <gtkmm2ext/gtk_ui.h>
  36 #include <gtkmm2ext/utils.h>
  37 #include <gtkmm2ext/tearoff.h>
  38 #include <gtkmm2ext/window_title.h>
  39
  40 #include "ardour/debug.h"
  41 #include "ardour/midi_track.h"
  42 #include "ardour/plugin_manager.h"
  43 #include "ardour/route_group.h"
  44 #include "ardour/route_sorters.h"
  45 #include "ardour/session.h"
  46
  47 #include "keyboard.h"
  48 #include "mixer_ui.h"
  49 #include "mixer_strip.h"
  50 #include "monitor_section.h"
  51 #include "plugin_selector.h"
  52 #include "public_editor.h"
  53 #include "ardour_ui.h"
  54 #include "prompter.h"
  55 #include "utils.h"
  56 #include "route_sorter.h"
  57 #include "actions.h"
  58 #include "gui_thread.h"
  59 #include "mixer_group_tabs.h"
  60 #include "timers.h"
  61
  62 #include "i18n.h"
  63
  64 using namespace ARDOUR;
  65 using namespace ARDOUR_UI_UTILS;
  66 using namespace PBD;
  67 using namespace Gtk;
  68 using namespace Glib;
  69 using namespace Gtkmm2ext;
  70 using namespace std;
  71
  72 using PBD::atoi;
  73 using PBD::Unwinder;
  74
  75 Mixer_UI* Mixer_UI::_instance = 0;
  76
  77 Mixer_UI*
  78 Mixer_UI::instance ()
  79 {
  80         if (!_instance) {
  81                 _instance  = new Mixer_UI;
  82         }
  83
  84         return _instance;
  85 }
  86
  87 Mixer_UI::Mixer_UI ()
  88         : Window (Gtk::WINDOW_TOPLEVEL)
  89         , VisibilityTracker (*((Gtk::Window*) this))
  90         , _visible (false)
  91         , no_track_list_redisplay (false)
  92         , in_group_row_change (false)
  93         , track_menu (0)
  94         , _monitor_section (0)
  95         , _strip_width (ARDOUR_UI::config()->get_default_narrow_ms() ? Narrow : Wide)
  96         , ignore_reorder (false)
  97         , _in_group_rebuild_or_clear (false)
  98         , _route_deletion_in_progress (false)
  99         , _following_editor_selection (false)
 100         , _maximised (false)
 101 {
 102         /* allow this window to become the key focus window */
 103         set_flags (CAN_FOCUS);
 104
 105         Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_order_keys, this), gui_context());
 106
 107         scroller.set_can_default (true);
 108         set_default (scroller);
 109
 110         scroller_base.set_flags (Gtk::CAN_FOCUS);
 111         scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 112         scroller_base.set_name ("MixerWindow");
 113         scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 114         // add as last item of strip packer
 115         strip_packer.pack_end (scroller_base, true, true);
 116
 117         _group_tabs = new MixerGroupTabs (this);
 118         VBox* b = manage (new VBox);
 119         b->pack_start (*_group_tabs, PACK_SHRINK);
 120         b->pack_start (strip_packer);
 121         b->show_all ();
 122
 123         scroller.add (*b);
 124         scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 125
 126         setup_track_display ();
 127
 128         group_model = ListStore::create (group_columns);
 129         group_display.set_model (group_model);
 130         group_display.append_column (_("Group"), group_columns.text);
 131         group_display.append_column (_("Show"), group_columns.visible);
 132         group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
 133         group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
 134         group_display.get_column (0)->set_expand(true);
 135         group_display.get_column (1)->set_expand(false);
 136         group_display.set_name ("EditGroupList");
 137         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 138         group_display.set_reorderable (true);
 139         group_display.set_headers_visible (true);
 140         group_display.set_rules_hint (true);
 141
 142         /* name is directly editable */
 143
 144         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
 145         name_cell->property_editable() = true;
 146         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 147
 148         /* use checkbox for the active column */
 149
 150         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (1));
 151         active_cell->property_activatable() = true;
 152         active_cell->property_radio() = false;
 153
 154         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 155         /* We use this to notice drag-and-drop reorders of the group list */
 156         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 157         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 158
 159         group_display_scroller.add (group_display);
 160         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 161
 162         HBox* route_group_display_button_box = manage (new HBox());
 163
 164         Button* route_group_add_button = manage (new Button ());
 165         Button* route_group_remove_button = manage (new Button ());
 166
 167         Widget* w;
 168
 169         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 170         w->show();
 171         route_group_add_button->add (*w);
 172
 173         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
 174         w->show();
 175         route_group_remove_button->add (*w);
 176
 177         route_group_display_button_box->set_homogeneous (true);
 178
 179         route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
 180         route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
 181
 182         route_group_display_button_box->add (*route_group_add_button);
 183         route_group_display_button_box->add (*route_group_remove_button);
 184
 185         group_display_vbox.pack_start (group_display_scroller, true, true);
 186         group_display_vbox.pack_start (*route_group_display_button_box, false, false);
 187
 188         group_display_frame.set_name ("BaseFrame");
 189         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 190         group_display_frame.add (group_display_vbox);
 191
 192         rhs_pane1.pack1 (track_display_frame);
 193         rhs_pane1.pack2 (group_display_frame);
 194
 195         list_vpacker.pack_start (rhs_pane1, true, true);
 196
 197         global_hpacker.pack_start (scroller, true, true);
 198 #ifdef GTKOSX
 199         /* current gtk-quartz has dirty updates on borders like this one */
 200         global_hpacker.pack_start (out_packer, false, false, 0);
 201 #else
 202         global_hpacker.pack_start (out_packer, false, false, 12);
 203 #endif
 204         list_hpane.pack1(list_vpacker, false, false);
 205         list_hpane.pack2(global_hpacker, true, false);
 206
 207         rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 208                                                         static_cast<Gtk::Paned*> (&rhs_pane1)));
 209         list_hpane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 210                                                          static_cast<Gtk::Paned*> (&list_hpane)));
 211
 212         global_vpacker.pack_start (list_hpane, true, true);
 213
 214         add (global_vpacker);
 215         set_name ("MixerWindow");
 216
 217         update_title ();
 218
 219         set_wmclass (X_("ardour_mixer"), PROGRAM_NAME);
 220
 221         signal_delete_event().connect (sigc::mem_fun (*this, &Mixer_UI::hide_window));
 222         add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
 223
 224         signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
 225
 226         route_group_display_button_box->show();
 227         route_group_add_button->show();
 228         route_group_remove_button->show();
 229
 230         global_hpacker.show();
 231         global_vpacker.show();
 232         scroller.show();
 233         scroller_base.show();
 234         scroller_hpacker.show();
 235         mixer_scroller_vpacker.show();
 236         list_vpacker.show();
 237         group_display_button_label.show();
 238         group_display_button.show();
 239         group_display_scroller.show();
 240         group_display_vbox.show();
 241         group_display_frame.show();
 242         rhs_pane1.show();
 243         strip_packer.show();
 244         out_packer.show();
 245         list_hpane.show();
 246         group_display.show();
 247
 248         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 249
 250 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 251         _plugin_selector = new PluginSelector (PluginManager::instance ());
 252 #endif
 253 }
 254
 255 Mixer_UI::~Mixer_UI ()
 256 {
 257         if (_monitor_section) {
 258                 delete _monitor_section;
 259         }
 260 }
 261
 262 void
 263 Mixer_UI::track_editor_selection ()
 264 {
 265         PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
 266 }
 267
 268
 269 void
 270 Mixer_UI::ensure_float (Window& win)
 271 {
 272         win.set_transient_for (*this);
 273 }
 274
 275 void
 276 Mixer_UI::show_window ()
 277 {
 278         present ();
 279         if (!_visible) {
 280                 set_window_pos_and_size ();
 281
 282                 /* show/hide group tabs as required */
 283                 parameter_changed ("show-group-tabs");
 284
 285                 /* now reset each strips width so the right widgets are shown */
 286                 MixerStrip* ms;
 287
 288                 TreeModel::Children rows = track_model->children();
 289                 TreeModel::Children::iterator ri;
 290
 291                 for (ri = rows.begin(); ri != rows.end(); ++ri) {
 292                         ms = (*ri)[track_columns.strip];
 293                         ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 294                         /* Fix visibility of mixer strip stuff */
 295                         ms->parameter_changed (X_("mixer-element-visibility"));
 296                 }
 297         }
 298
 299         /* force focus into main area */
 300         scroller_base.grab_focus ();
 301
 302         _visible = true;
 303 }
 304
 305 bool
 306 Mixer_UI::hide_window (GdkEventAny *ev)
 307 {
 308         get_window_pos_and_size ();
 309
 310         _visible = false;
 311         return just_hide_it(ev, static_cast<Gtk::Window *>(this));
 312 }
 313
 314
 315 void
 316 Mixer_UI::add_strips (RouteList& routes)
 317 {
 318         bool from_scratch = track_model->children().size() == 0;
 319         Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 320
 321         for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
 322                 boost::shared_ptr<Route> r = (*it)[track_columns.route];
 323
 324                 if (r->order_key() == (routes.front()->order_key() + routes.size())) {
 325                         insert_iter = it;
 326                         break;
 327                 }
 328         }
 329
 330         if(!from_scratch) {
 331                 _selection.clear_routes ();
 332         }
 333
 334         MixerStrip* strip;
 335
 336         try {
 337                 no_track_list_redisplay = true;
 338                 track_display.set_model (Glib::RefPtr<ListStore>());
 339
 340                 for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
 341                         boost::shared_ptr<Route> route = (*x);
 342
 343                         if (route->is_auditioner()) {
 344                                 continue;
 345                         }
 346
 347                         if (route->is_monitor()) {
 348
 349                                 if (!_monitor_section) {
 350                                         _monitor_section = new MonitorSection (_session);
 351
 352                                         XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 353                                         if (mnode) {
 354                                                 _monitor_section->tearoff().set_state (*mnode);
 355                                         }
 356                                 }
 357
 358                                 out_packer.pack_end (_monitor_section->tearoff(), false, false);
 359                                 _monitor_section->set_session (_session);
 360                                 _monitor_section->tearoff().show_all ();
 361
 362                                 route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 363
 364                                 /* no regular strip shown for control out */
 365
 366                                 continue;
 367                         }
 368
 369                         strip = new MixerStrip (*this, _session, route);
 370                         strips.push_back (strip);
 371
 372                         ARDOUR_UI::config()->get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 373
 374                         if (strip->width_owner() != strip) {
 375                                 strip->set_width_enum (_strip_width, this);
 376                         }
 377
 378                         show_strip (strip);
 379
 380                         TreeModel::Row row = *(track_model->insert(insert_iter));
 381                         row[track_columns.text] = route->name();
 382                         row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
 383                         row[track_columns.route] = route;
 384                         row[track_columns.strip] = strip;
 385
 386                         if (!from_scratch) {
 387                                 _selection.add (strip);
 388                         }
 389
 390                         route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
 391
 392                         strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 393                         strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 394                 }
 395
 396         } catch (...) {
 397         }
 398
 399         no_track_list_redisplay = false;
 400         track_display.set_model (track_model);
 401
 402         sync_order_keys_from_treeview ();
 403         redisplay_track_list ();
 404 }
 405
 406 void
 407 Mixer_UI::deselect_all_strip_processors ()
 408 {
 409         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 410                 (*i)->deselect_all_processors();
 411         }
 412 }
 413
 414 void
 415 Mixer_UI::select_none ()
 416 {
 417         _selection.clear_routes();
 418         deselect_all_strip_processors();
 419 }
 420
 421 void
 422 Mixer_UI::delete_processors ()
 423 {
 424         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 425                 (*i)->delete_processors();
 426         }
 427 }
 428
 429
 430 void
 431 Mixer_UI::remove_strip (MixerStrip* strip)
 432 {
 433         if (_session && _session->deletion_in_progress()) {
 434                 /* its all being taken care of */
 435                 return;
 436         }
 437
 438         TreeModel::Children rows = track_model->children();
 439         TreeModel::Children::iterator ri;
 440         list<MixerStrip *>::iterator i;
 441
 442         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 443                 strips.erase (i);
 444         }
 445
 446         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 447                 if ((*ri)[track_columns.strip] == strip) {
 448                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 449                         track_model->erase (ri);
 450                         break;
 451                 }
 452         }
 453 }
 454
 455 void
 456 Mixer_UI::reset_remote_control_ids ()
 457 {
 458         if (Config->get_remote_model() == UserOrdered || !_session || _session->deletion_in_progress()) {
 459                 return;
 460         }
 461
 462         TreeModel::Children rows = track_model->children();
 463
 464         if (rows.empty()) {
 465                 return;
 466         }
 467
 468         DEBUG_TRACE (DEBUG::OrderKeys, "mixer resets remote control ids after remote model change\n");
 469
 470         TreeModel::Children::iterator ri;
 471         bool rid_change = false;
 472         uint32_t rid = 1;
 473         uint32_t invisible_key = UINT32_MAX;
 474
 475         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 476
 477                 /* skip two special values */
 478
 479                 if (rid == Route::MasterBusRemoteControlID) {
 480                         rid++;
 481                 }
 482
 483                 if (rid == Route::MonitorBusRemoteControlID) {
 484                         rid++;
 485                 }
 486
 487                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 488                 bool visible = (*ri)[track_columns.visible];
 489
 490                 if (!route->is_master() && !route->is_monitor()) {
 491
 492                         uint32_t new_rid = (visible ? rid : invisible_key--);
 493
 494                         if (new_rid != route->remote_control_id()) {
 495                                 route->set_remote_control_id_explicit (new_rid);
 496                                 rid_change = true;
 497                         }
 498
 499                         if (visible) {
 500                                 rid++;
 501                         }
 502                 }
 503         }
 504
 505         if (rid_change) {
 506                 /* tell the world that we changed the remote control IDs */
 507                 _session->notify_remote_id_change ();
 508         }
 509 }
 510
 511 void
 512 Mixer_UI::sync_order_keys_from_treeview ()
 513 {
 514         if (ignore_reorder || !_session || _session->deletion_in_progress()) {
 515                 return;
 516         }
 517
 518         TreeModel::Children rows = track_model->children();
 519
 520         if (rows.empty()) {
 521                 return;
 522         }
 523
 524         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
 525
 526         TreeModel::Children::iterator ri;
 527         bool changed = false;
 528         bool rid_change = false;
 529         uint32_t order = 0;
 530         uint32_t rid = 1;
 531         uint32_t invisible_key = UINT32_MAX;
 532
 533         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 534                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 535                 bool visible = (*ri)[track_columns.visible];
 536
 537                 uint32_t old_key = route->order_key ();
 538
 539                 if (order != old_key) {
 540                         route->set_order_key (order);
 541                         changed = true;
 542                 }
 543
 544                 if ((Config->get_remote_model() == MixerOrdered) && !route->is_master() && !route->is_monitor()) {
 545
 546                         uint32_t new_rid = (visible ? rid : invisible_key--);
 547
 548                         if (new_rid != route->remote_control_id()) {
 549                                 route->set_remote_control_id_explicit (new_rid);
 550                                 rid_change = true;
 551                         }
 552
 553                         if (visible) {
 554                                 rid++;
 555                         }
 556
 557                 }
 558
 559                 ++order;
 560         }
 561
 562         if (changed) {
 563                 /* tell everyone that we changed the mixer sort keys */
 564                 _session->sync_order_keys ();
 565         }
 566
 567         if (rid_change) {
 568                 /* tell the world that we changed the remote control IDs */
 569                 _session->notify_remote_id_change ();
 570         }
 571 }
 572
 573 void
 574 Mixer_UI::sync_treeview_from_order_keys ()
 575 {
 576         if (!_session || _session->deletion_in_progress()) {
 577                 return;
 578         }
 579
 580         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from order keys.\n");
 581
 582         /* we could get here after either a change in the Mixer or Editor sort
 583          * order, but either way, the mixer order keys reflect the intended
 584          * order for the GUI, so reorder the treeview model to match it.
 585          */
 586
 587         vector<int> neworder;
 588         TreeModel::Children rows = track_model->children();
 589         uint32_t old_order = 0;
 590         bool changed = false;
 591
 592         if (rows.empty()) {
 593                 return;
 594         }
 595
 596         OrderKeySortedRoutes sorted_routes;
 597
 598         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 599                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 600                 sorted_routes.push_back (RoutePlusOrderKey (route, old_order, route->order_key ()));
 601         }
 602
 603         SortByNewDisplayOrder cmp;
 604
 605         sort (sorted_routes.begin(), sorted_routes.end(), cmp);
 606         neworder.assign (sorted_routes.size(), 0);
 607
 608         uint32_t n = 0;
 609
 610         for (OrderKeySortedRoutes::iterator sr = sorted_routes.begin(); sr != sorted_routes.end(); ++sr, ++n) {
 611
 612                 neworder[n] = sr->old_display_order;
 613
 614                 if (sr->old_display_order != n) {
 615                         changed = true;
 616                 }
 617
 618                 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order for %1 from %2 to %3\n",
 619                                                                sr->route->name(), sr->old_display_order, n));
 620         }
 621
 622         if (changed) {
 623                 Unwinder<bool> uw (ignore_reorder, true);
 624                 track_model->reorder (neworder);
 625         }
 626
 627         redisplay_track_list ();
 628 }
 629
 630 void
 631 Mixer_UI::follow_editor_selection ()
 632 {
 633         if (_following_editor_selection) {
 634                 return;
 635         }
 636
 637         _following_editor_selection = true;
 638         _selection.block_routes_changed (true);
 639
 640         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 641
 642         _selection.clear_routes ();
 643
 644         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 645                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
 646                 if (rtav) {
 647                         MixerStrip* ms = strip_by_route (rtav->route());
 648                         if (ms) {
 649                                 _selection.add (ms);
 650                         }
 651                 }
 652         }
 653
 654         _following_editor_selection = false;
 655         _selection.block_routes_changed (false);
 656 }
 657
 658
 659 MixerStrip*
 660 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 661 {
 662         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 663                 if ((*i)->route() == r) {
 664                         return (*i);
 665                 }
 666         }
 667
 668         return 0;
 669 }
 670
 671 bool
 672 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 673 {
 674         if (ev->button == 1) {
 675                 if (_selection.selected (strip)) {
 676                         /* primary-click: toggle selection state of strip */
 677                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 678                                 _selection.remove (strip);
 679                         } else if (_selection.routes.size() > 1) {
 680                                 /* de-select others */
 681                                 _selection.set (strip);
 682                         }
 683                 } else {
 684                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 685                                 _selection.add (strip);
 686                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 687
 688                                 if (!_selection.selected(strip)) {
 689
 690                                         /* extend selection */
 691
 692                                         vector<MixerStrip*> tmp;
 693                                         bool accumulate = false;
 694                                         bool found_another = false;
 695
 696                                         tmp.push_back (strip);
 697
 698                                         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 699                                                 if ((*i) == strip) {
 700                                                         /* hit clicked strip, start accumulating till we hit the first
 701                                                            selected strip
 702                                                         */
 703                                                         if (accumulate) {
 704                                                                 /* done */
 705                                                                 break;
 706                                                         } else {
 707                                                                 accumulate = true;
 708                                                         }
 709                                                 } else if (_selection.selected (*i)) {
 710                                                         /* hit selected strip. if currently accumulating others,
 711                                                            we're done. if not accumulating others, start doing so.
 712                                                         */
 713                                                         found_another = true;
 714                                                         if (accumulate) {
 715                                                                 /* done */
 716                                                                 break;
 717                                                         } else {
 718                                                                 accumulate = true;
 719                                                         }
 720                                                 } else {
 721                                                         if (accumulate) {
 722                                                                 tmp.push_back (*i);
 723                                                         }
 724                                                 }
 725                                         }
 726
 727                                         if (found_another) {
 728                                                 for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 729                                                         _selection.add (*i);
 730                                                 }
 731                                         } else
 732                                                 _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
 733                                 }
 734
 735                         } else {
 736                                 _selection.set (strip);
 737                         }
 738                 }
 739         }
 740
 741         return true;
 742 }
 743
 744 void
 745 Mixer_UI::set_session (Session* sess)
 746 {
 747         SessionHandlePtr::set_session (sess);
 748
 749         if (_plugin_selector) {
 750                 _plugin_selector->set_session (_session);
 751         }
 752
 753         _group_tabs->set_session (sess);
 754
 755         if (!_session) {
 756                 return;
 757         }
 758
 759         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 760         set_state (*node);
 761
 762         update_title ();
 763
 764         initial_track_display ();
 765
 766         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
 767         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 768         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 769         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 770         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 771         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 772         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 773
 774         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 775
 776         route_groups_changed ();
 777
 778         if (_visible) {
 779                 show_window();
 780
 781                 /* Bit of a hack; if we're here, we're opening the mixer because of our
 782                    instant XML state having a show-mixer property.  Fix up the corresponding
 783                    action state.
 784                 */
 785                 ActionManager::check_toggleaction ("<Actions>/Common/toggle-mixer");
 786         }
 787
 788         start_updating ();
 789 }
 790
 791 void
 792 Mixer_UI::session_going_away ()
 793 {
 794         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 795
 796         _in_group_rebuild_or_clear = true;
 797         group_model->clear ();
 798         _in_group_rebuild_or_clear = false;
 799
 800         _selection.clear ();
 801         track_model->clear ();
 802
 803         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 804                 delete (*i);
 805         }
 806
 807         if (_monitor_section) {
 808                 _monitor_section->tearoff().hide_visible ();
 809         }
 810
 811         strips.clear ();
 812
 813         stop_updating ();
 814
 815         SessionHandlePtr::session_going_away ();
 816
 817         _session = 0;
 818         update_title ();
 819 }
 820
 821 void
 822 Mixer_UI::track_visibility_changed (std::string const & path)
 823 {
 824         if (_session && _session->deletion_in_progress()) {
 825                 return;
 826         }
 827
 828         TreeIter iter;
 829
 830         if ((iter = track_model->get_iter (path))) {
 831                 MixerStrip* strip = (*iter)[track_columns.strip];
 832                 if (strip) {
 833                         bool visible = (*iter)[track_columns.visible];
 834
 835                         if (strip->set_marked_for_display (!visible)) {
 836                                 update_track_visibility ();
 837                         }
 838                 }
 839         }
 840 }
 841
 842 void
 843 Mixer_UI::update_track_visibility ()
 844 {
 845         TreeModel::Children rows = track_model->children();
 846         TreeModel::Children::iterator i;
 847
 848         {
 849                 Unwinder<bool> uw (no_track_list_redisplay, true);
 850
 851                 for (i = rows.begin(); i != rows.end(); ++i) {
 852                         MixerStrip *strip = (*i)[track_columns.strip];
 853                         (*i)[track_columns.visible] = strip->marked_for_display ();
 854                 }
 855
 856                 /* force route order keys catch up with visibility changes
 857                  */
 858
 859                 sync_order_keys_from_treeview ();
 860         }
 861
 862         redisplay_track_list ();
 863 }
 864
 865 void
 866 Mixer_UI::show_strip (MixerStrip* ms)
 867 {
 868         TreeModel::Children rows = track_model->children();
 869         TreeModel::Children::iterator i;
 870
 871         for (i = rows.begin(); i != rows.end(); ++i) {
 872
 873                 MixerStrip* strip = (*i)[track_columns.strip];
 874                 if (strip == ms) {
 875                         (*i)[track_columns.visible] = true;
 876                         redisplay_track_list ();
 877                         break;
 878                 }
 879         }
 880 }
 881
 882 void
 883 Mixer_UI::hide_strip (MixerStrip* ms)
 884 {
 885         TreeModel::Children rows = track_model->children();
 886         TreeModel::Children::iterator i;
 887
 888         for (i = rows.begin(); i != rows.end(); ++i) {
 889
 890                 MixerStrip* strip = (*i)[track_columns.strip];
 891                 if (strip == ms) {
 892                         (*i)[track_columns.visible] = false;
 893                         redisplay_track_list ();
 894                         break;
 895                 }
 896         }
 897 }
 898
 899 gint
 900 Mixer_UI::start_updating ()
 901 {
 902     fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
 903     return 0;
 904 }
 905
 906 gint
 907 Mixer_UI::stop_updating ()
 908 {
 909     fast_screen_update_connection.disconnect();
 910     return 0;
 911 }
 912
 913 void
 914 Mixer_UI::fast_update_strips ()
 915 {
 916         if (is_mapped () && _session) {
 917                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 918                         (*i)->fast_update ();
 919                 }
 920         }
 921 }
 922
 923 void
 924 Mixer_UI::set_all_strips_visibility (bool yn)
 925 {
 926         TreeModel::Children rows = track_model->children();
 927         TreeModel::Children::iterator i;
 928
 929         {
 930                 Unwinder<bool> uw (no_track_list_redisplay, true);
 931
 932                 for (i = rows.begin(); i != rows.end(); ++i) {
 933
 934                         TreeModel::Row row = (*i);
 935                         MixerStrip* strip = row[track_columns.strip];
 936
 937                         if (strip == 0) {
 938                                 continue;
 939                         }
 940
 941                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 942                                 continue;
 943                         }
 944
 945                         (*i)[track_columns.visible] = yn;
 946                 }
 947         }
 948
 949         redisplay_track_list ();
 950 }
 951
 952
 953 void
 954 Mixer_UI::set_all_audio_visibility (int tracks, bool yn)
 955 {
 956         TreeModel::Children rows = track_model->children();
 957         TreeModel::Children::iterator i;
 958
 959         {
 960                 Unwinder<bool> uw (no_track_list_redisplay, true);
 961
 962                 for (i = rows.begin(); i != rows.end(); ++i) {
 963                         TreeModel::Row row = (*i);
 964                         MixerStrip* strip = row[track_columns.strip];
 965
 966                         if (strip == 0) {
 967                                 continue;
 968                         }
 969
 970                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 971                                 continue;
 972                         }
 973
 974                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
 975
 976                         switch (tracks) {
 977                         case 0:
 978                                 (*i)[track_columns.visible] = yn;
 979                                 break;
 980
 981                         case 1:
 982                                 if (at) { /* track */
 983                                         (*i)[track_columns.visible] = yn;
 984                                 }
 985                                 break;
 986
 987                         case 2:
 988                                 if (!at) { /* bus */
 989                                         (*i)[track_columns.visible] = yn;
 990                                 }
 991                                 break;
 992                         }
 993                 }
 994         }
 995
 996         redisplay_track_list ();
 997 }
 998
 999 void
1000 Mixer_UI::hide_all_routes ()
1001 {
1002         set_all_strips_visibility (false);
1003 }
1004
1005 void
1006 Mixer_UI::show_all_routes ()
1007 {
1008         set_all_strips_visibility (true);
1009 }
1010
1011 void
1012 Mixer_UI::show_all_audiobus ()
1013 {
1014         set_all_audio_visibility (2, true);
1015 }
1016 void
1017 Mixer_UI::hide_all_audiobus ()
1018 {
1019         set_all_audio_visibility (2, false);
1020 }
1021
1022 void
1023 Mixer_UI::show_all_audiotracks()
1024 {
1025         set_all_audio_visibility (1, true);
1026 }
1027 void
1028 Mixer_UI::hide_all_audiotracks ()
1029 {
1030         set_all_audio_visibility (1, false);
1031 }
1032
1033 void
1034 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1035 {
1036         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1037         sync_order_keys_from_treeview ();
1038 }
1039
1040 void
1041 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1042 {
1043         /* this happens as the second step of a DnD within the treeview as well
1044            as when a row/route is actually deleted.
1045
1046            if it was a deletion then we have to force a redisplay because
1047            order keys may not have changed.
1048         */
1049
1050         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1051         sync_order_keys_from_treeview ();
1052
1053         if (_route_deletion_in_progress) {
1054                 redisplay_track_list ();
1055         }
1056 }
1057
1058 void
1059 Mixer_UI::redisplay_track_list ()
1060 {
1061         TreeModel::Children rows = track_model->children();
1062         TreeModel::Children::iterator i;
1063
1064         if (no_track_list_redisplay) {
1065                 return;
1066         }
1067
1068         for (i = rows.begin(); i != rows.end(); ++i) {
1069
1070                 MixerStrip* strip = (*i)[track_columns.strip];
1071
1072                 if (strip == 0) {
1073                         /* we're in the middle of changing a row, don't worry */
1074                         continue;
1075                 }
1076
1077                 bool const visible = (*i)[track_columns.visible];
1078
1079                 if (visible) {
1080                         strip->set_gui_property ("visible", true);
1081
1082                         if (strip->packed()) {
1083
1084                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1085                                         out_packer.reorder_child (*strip, -1);
1086
1087                                 } else {
1088                                         strip_packer.reorder_child (*strip, -1); /* put at end */
1089                                 }
1090
1091                         } else {
1092
1093                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1094                                         out_packer.pack_start (*strip, false, false);
1095                                 } else {
1096                                         strip_packer.pack_start (*strip, false, false);
1097                                 }
1098                                 strip->set_packed (true);
1099                         }
1100
1101                 } else {
1102
1103                         strip->set_gui_property ("visible", false);
1104
1105                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1106                                 /* do nothing, these cannot be hidden */
1107                         } else {
1108                                 if (strip->packed()) {
1109                                         strip_packer.remove (*strip);
1110                                         strip->set_packed (false);
1111                                 }
1112                         }
1113                 }
1114         }
1115
1116         _group_tabs->set_dirty ();
1117 }
1118
1119 void
1120 Mixer_UI::strip_width_changed ()
1121 {
1122         _group_tabs->set_dirty ();
1123
1124 #ifdef GTKOSX
1125         TreeModel::Children rows = track_model->children();
1126         TreeModel::Children::iterator i;
1127         long order;
1128
1129         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1130                 MixerStrip* strip = (*i)[track_columns.strip];
1131
1132                 if (strip == 0) {
1133                         continue;
1134                 }
1135
1136                 bool visible = (*i)[track_columns.visible];
1137
1138                 if (visible) {
1139                         strip->queue_draw();
1140                 }
1141         }
1142 #endif
1143
1144 }
1145
1146 void
1147 Mixer_UI::initial_track_display ()
1148 {
1149         boost::shared_ptr<RouteList> routes = _session->get_routes();
1150         RouteList copy (*routes);
1151         ARDOUR::SignalOrderRouteSorter sorter;
1152
1153         copy.sort (sorter);
1154
1155         {
1156                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1157                 Unwinder<bool> uw2 (ignore_reorder, true);
1158
1159                 track_model->clear ();
1160                 add_strips (copy);
1161         }
1162
1163         _session->sync_order_keys ();
1164
1165         redisplay_track_list ();
1166 }
1167
1168 void
1169 Mixer_UI::show_track_list_menu ()
1170 {
1171         if (track_menu == 0) {
1172                 build_track_menu ();
1173         }
1174
1175         track_menu->popup (1, gtk_get_current_event_time());
1176 }
1177
1178 bool
1179 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1180 {
1181         if (Keyboard::is_context_menu_event (ev)) {
1182                 show_track_list_menu ();
1183                 return true;
1184         }
1185
1186         return false;
1187 }
1188
1189 void
1190 Mixer_UI::build_track_menu ()
1191 {
1192         using namespace Menu_Helpers;
1193         using namespace Gtk;
1194
1195         track_menu = new Menu;
1196         track_menu->set_name ("ArdourContextMenu");
1197         MenuList& items = track_menu->items();
1198
1199         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1200         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1201         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1202         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1203         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1204         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1205
1206 }
1207
1208 void
1209 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1210 {
1211         if (!what_changed.contains (ARDOUR::Properties::name)) {
1212                 return;
1213         }
1214
1215         ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1216
1217         TreeModel::Children rows = track_model->children();
1218         TreeModel::Children::iterator i;
1219
1220         for (i = rows.begin(); i != rows.end(); ++i) {
1221                 if ((*i)[track_columns.strip] == mx) {
1222                         (*i)[track_columns.text] = mx->route()->name();
1223                         return;
1224                 }
1225         }
1226
1227         error << _("track display list item for renamed strip not found!") << endmsg;
1228 }
1229
1230 bool
1231 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1232 {
1233         TreeModel::Path path;
1234         TreeViewColumn* column;
1235         int cellx;
1236         int celly;
1237
1238         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1239                 _group_tabs->get_menu(0)->popup (1, ev->time);
1240                 return true;
1241         }
1242
1243         TreeIter iter = group_model->get_iter (path);
1244         if (!iter) {
1245                 _group_tabs->get_menu(0)->popup (1, ev->time);
1246                 return true;
1247         }
1248
1249         RouteGroup* group = (*iter)[group_columns.group];
1250
1251         if (Keyboard::is_context_menu_event (ev)) {
1252                 _group_tabs->get_menu(group)->popup (1, ev->time);
1253                 return true;
1254         }
1255
1256         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1257         case 0:
1258                 if (Keyboard::is_edit_event (ev)) {
1259                         if (group) {
1260                                 // edit_route_group (group);
1261 #ifdef GTKOSX
1262                                 group_display.queue_draw();
1263 #endif
1264                                 return true;
1265                         }
1266                 }
1267                 break;
1268
1269         case 1:
1270         {
1271                 bool visible = (*iter)[group_columns.visible];
1272                 (*iter)[group_columns.visible] = !visible;
1273 #ifdef GTKOSX
1274                 group_display.queue_draw();
1275 #endif
1276                 return true;
1277         }
1278
1279         default:
1280                 break;
1281         }
1282
1283         return false;
1284  }
1285
1286 void
1287 Mixer_UI::activate_all_route_groups ()
1288 {
1289         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1290 }
1291
1292 void
1293 Mixer_UI::disable_all_route_groups ()
1294 {
1295         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1296 }
1297
1298 void
1299 Mixer_UI::route_groups_changed ()
1300 {
1301         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1302
1303         _in_group_rebuild_or_clear = true;
1304
1305         /* just rebuild the while thing */
1306
1307         group_model->clear ();
1308
1309 #if 0
1310         /* this is currently not used,
1311          * Mixer_UI::group_display_button_press() has a case for it,
1312          * and a commented edit_route_group() but that's n/a since 2011.
1313          *
1314          * This code is left as reminder that
1315          * row[group_columns.group] = 0 has special meaning.
1316          */
1317         {
1318                 TreeModel::Row row;
1319                 row = *(group_model->append());
1320                 row[group_columns.visible] = true;
1321                 row[group_columns.text] = (_("-all-"));
1322                 row[group_columns.group] = 0;
1323         }
1324 #endif
1325
1326         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1327
1328         _group_tabs->set_dirty ();
1329         _in_group_rebuild_or_clear = false;
1330 }
1331
1332 void
1333 Mixer_UI::new_route_group ()
1334 {
1335         RouteList rl;
1336
1337         _group_tabs->run_new_group_dialog (rl);
1338 }
1339
1340 void
1341 Mixer_UI::remove_selected_route_group ()
1342 {
1343         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1344         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1345
1346         if (rows.empty()) {
1347                 return;
1348         }
1349
1350         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1351         TreeIter iter;
1352
1353         /* selection mode is single, so rows.begin() is it */
1354
1355         if ((iter = group_model->get_iter (*i))) {
1356
1357                 RouteGroup* rg = (*iter)[group_columns.group];
1358
1359                 if (rg) {
1360                         _session->remove_route_group (*rg);
1361                 }
1362         }
1363 }
1364
1365 void
1366 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1367 {
1368         if (in_group_row_change) {
1369                 return;
1370         }
1371
1372         /* force an update of any mixer strips that are using this group,
1373            otherwise mix group names don't change in mixer strips
1374         */
1375
1376         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1377                 if ((*i)->route_group() == group) {
1378                         (*i)->route_group_changed();
1379                 }
1380         }
1381
1382         TreeModel::iterator i;
1383         TreeModel::Children rows = group_model->children();
1384         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1385
1386         in_group_row_change = true;
1387
1388         for (i = rows.begin(); i != rows.end(); ++i) {
1389                 if ((*i)[group_columns.group] == group) {
1390                         (*i)[group_columns.visible] = !group->is_hidden ();
1391                         (*i)[group_columns.text] = group->name ();
1392                         break;
1393                 }
1394         }
1395
1396         in_group_row_change = false;
1397
1398         if (change.contains (Properties::name)) {
1399                 _group_tabs->set_dirty ();
1400         }
1401
1402         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1403                 if ((*j)->route_group() == group) {
1404                         if (group->is_hidden ()) {
1405                                 hide_strip (*j);
1406                         } else {
1407                                 show_strip (*j);
1408                         }
1409                 }
1410         }
1411 }
1412
1413 void
1414 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1415 {
1416         RouteGroup* group;
1417         TreeIter iter;
1418
1419         if ((iter = group_model->get_iter (path))) {
1420
1421                 if ((group = (*iter)[group_columns.group]) == 0) {
1422                         return;
1423                 }
1424
1425                 if (new_text != group->name()) {
1426                         group->set_name (new_text);
1427                 }
1428         }
1429 }
1430
1431 void
1432 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1433 {
1434         RouteGroup* group;
1435
1436         if (in_group_row_change) {
1437                 return;
1438         }
1439
1440         if ((group = (*iter)[group_columns.group]) == 0) {
1441                 return;
1442         }
1443
1444         std::string name = (*iter)[group_columns.text];
1445
1446         if (name != group->name()) {
1447                 group->set_name (name);
1448         }
1449
1450         bool hidden = !(*iter)[group_columns.visible];
1451
1452         if (hidden != group->is_hidden ()) {
1453                 group->set_hidden (hidden, this);
1454         }
1455 }
1456
1457 /** Called when a group model row is deleted, but also when the model is
1458  *  reordered by a user drag-and-drop; the latter is what we are
1459  *  interested in here.
1460  */
1461 void
1462 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1463 {
1464         if (_in_group_rebuild_or_clear) {
1465                 return;
1466         }
1467
1468         /* Re-write the session's route group list so that the new order is preserved */
1469
1470         list<RouteGroup*> new_list;
1471
1472         Gtk::TreeModel::Children children = group_model->children();
1473         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1474                 RouteGroup* g = (*i)[group_columns.group];
1475                 if (g) {
1476                         new_list.push_back (g);
1477                 }
1478         }
1479
1480         _session->reorder_route_groups (new_list);
1481 }
1482
1483
1484 void
1485 Mixer_UI::add_route_group (RouteGroup* group)
1486 {
1487         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1488         bool focus = false;
1489
1490         in_group_row_change = true;
1491
1492         TreeModel::Row row = *(group_model->append());
1493         row[group_columns.visible] = !group->is_hidden ();
1494         row[group_columns.group] = group;
1495         if (!group->name().empty()) {
1496                 row[group_columns.text] = group->name();
1497         } else {
1498                 row[group_columns.text] = _("unnamed");
1499                 focus = true;
1500         }
1501
1502         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1503
1504         if (focus) {
1505                 TreeViewColumn* col = group_display.get_column (0);
1506                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1507                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1508         }
1509
1510         _group_tabs->set_dirty ();
1511
1512         in_group_row_change = false;
1513 }
1514
1515 bool
1516 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1517 {
1518         using namespace Menu_Helpers;
1519
1520         if (Keyboard::is_context_menu_event (ev)) {
1521                 ARDOUR_UI::instance()->add_route (this);
1522                 return true;
1523         }
1524
1525         return false;
1526 }
1527
1528 void
1529 Mixer_UI::set_strip_width (Width w, bool save)
1530 {
1531         _strip_width = w;
1532
1533         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1534                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1535         }
1536 }
1537
1538 void
1539 Mixer_UI::set_window_pos_and_size ()
1540 {
1541         resize (m_width, m_height);
1542         move (m_root_x, m_root_y);
1543 }
1544
1545         void
1546 Mixer_UI::get_window_pos_and_size ()
1547 {
1548         get_position(m_root_x, m_root_y);
1549         get_size(m_width, m_height);
1550 }
1551
1552 int
1553 Mixer_UI::set_state (const XMLNode& node)
1554 {
1555         const XMLProperty* prop;
1556         XMLNode* geometry;
1557
1558         m_width = default_width;
1559         m_height = default_height;
1560         m_root_x = 1;
1561         m_root_y = 1;
1562
1563         if ((geometry = find_named_node (node, "geometry")) != 0) {
1564
1565                 XMLProperty* prop;
1566
1567                 if ((prop = geometry->property("x_size")) == 0) {
1568                         prop = geometry->property ("x-size");
1569                 }
1570                 if (prop) {
1571                         m_width = atoi(prop->value());
1572                 }
1573                 if ((prop = geometry->property("y_size")) == 0) {
1574                         prop = geometry->property ("y-size");
1575                 }
1576                 if (prop) {
1577                         m_height = atoi(prop->value());
1578                 }
1579
1580                 if ((prop = geometry->property ("x_pos")) == 0) {
1581                         prop = geometry->property ("x-pos");
1582                 }
1583                 if (prop) {
1584                         m_root_x = atoi (prop->value());
1585
1586                 }
1587                 if ((prop = geometry->property ("y_pos")) == 0) {
1588                         prop = geometry->property ("y-pos");
1589                 }
1590                 if (prop) {
1591                         m_root_y = atoi (prop->value());
1592                 }
1593         }
1594
1595         set_window_pos_and_size ();
1596
1597         if ((prop = node.property ("narrow-strips"))) {
1598                 if (string_is_affirmative (prop->value())) {
1599                         set_strip_width (Narrow);
1600                 } else {
1601                         set_strip_width (Wide);
1602                 }
1603         }
1604
1605         if ((prop = node.property ("show-mixer"))) {
1606                 if (string_is_affirmative (prop->value())) {
1607                        _visible = true;
1608                 }
1609         }
1610
1611         if ((prop = node.property ("maximised"))) {
1612                 bool yn = string_is_affirmative (prop->value());
1613                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1614                 assert (act);
1615                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1616                 bool fs = tact && tact->get_active();
1617                 if (yn ^ fs) {
1618                         ActionManager::do_action ("Common",
1619                                         "ToggleMaximalMixer");
1620                 }
1621         }
1622
1623
1624         return 0;
1625 }
1626
1627 XMLNode&
1628 Mixer_UI::get_state (void)
1629 {
1630         XMLNode* node = new XMLNode ("Mixer");
1631
1632         if (is_realized()) {
1633                 Glib::RefPtr<Gdk::Window> win = get_window();
1634
1635                 get_window_pos_and_size ();
1636
1637                 XMLNode* geometry = new XMLNode ("geometry");
1638                 char buf[32];
1639                 snprintf(buf, sizeof(buf), "%d", m_width);
1640                 geometry->add_property(X_("x_size"), string(buf));
1641                 snprintf(buf, sizeof(buf), "%d", m_height);
1642                 geometry->add_property(X_("y_size"), string(buf));
1643                 snprintf(buf, sizeof(buf), "%d", m_root_x);
1644                 geometry->add_property(X_("x_pos"), string(buf));
1645                 snprintf(buf, sizeof(buf), "%d", m_root_y);
1646                 geometry->add_property(X_("y_pos"), string(buf));
1647
1648                 // written only for compatibility, they are not used.
1649                 snprintf(buf, sizeof(buf), "%d", 0);
1650                 geometry->add_property(X_("x_off"), string(buf));
1651                 snprintf(buf, sizeof(buf), "%d", 0);
1652                 geometry->add_property(X_("y_off"), string(buf));
1653
1654                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&rhs_pane1)->gobj()));
1655                 geometry->add_property(X_("mixer_rhs_pane1_pos"), string(buf));
1656                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&list_hpane)->gobj()));
1657                 geometry->add_property(X_("mixer_list_hpane_pos"), string(buf));
1658
1659                 node->add_child_nocopy (*geometry);
1660         }
1661
1662         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1663
1664         node->add_property ("show-mixer", _visible ? "yes" : "no");
1665
1666         node->add_property ("maximised", _maximised ? "yes" : "no");
1667
1668         return *node;
1669 }
1670
1671
1672 void
1673 Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
1674 {
1675         int pos;
1676         XMLProperty* prop = 0;
1677         char buf[32];
1678         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
1679         XMLNode* geometry;
1680         int height;
1681         static int32_t done[3] = { 0, 0, 0 };
1682
1683         height = default_height;
1684
1685         if ((geometry = find_named_node (*node, "geometry")) != 0) {
1686
1687                 if ((prop = geometry->property ("y_size")) == 0) {
1688                         prop = geometry->property ("y-size");
1689                 }
1690                 if (prop) {
1691                         height = atoi (prop->value());
1692                 }
1693         }
1694
1695         if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
1696
1697                 if (done[0]) {
1698                         return;
1699                 }
1700
1701                 if (!geometry || (prop = geometry->property("mixer-rhs-pane1-pos")) == 0) {
1702                         pos = height / 3;
1703                         snprintf (buf, sizeof(buf), "%d", pos);
1704                 } else {
1705                         pos = atoi (prop->value());
1706                 }
1707
1708                 if ((done[0] = GTK_WIDGET(rhs_pane1.gobj())->allocation.height > pos)) {
1709                         rhs_pane1.set_position (pos);
1710                 }
1711
1712         } else if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
1713
1714                 if (done[2]) {
1715                         return;
1716                 }
1717
1718                 if (!geometry || (prop = geometry->property("mixer-list-hpane-pos")) == 0) {
1719                         pos = 75;
1720                         snprintf (buf, sizeof(buf), "%d", pos);
1721                 } else {
1722                         pos = atoi (prop->value());
1723                 }
1724
1725                 if ((done[2] = GTK_WIDGET(list_hpane.gobj())->allocation.width > pos)) {
1726                         list_hpane.set_position (pos);
1727                 }
1728         }
1729 }
1730 void
1731 Mixer_UI::scroll_left ()
1732 {
1733         if (!scroller.get_hscrollbar()) return;
1734         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1735         /* stupid GTK: can't rely on clamping across versions */
1736         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
1737 }
1738
1739 void
1740 Mixer_UI::scroll_right ()
1741 {
1742         if (!scroller.get_hscrollbar()) return;
1743         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1744         /* stupid GTK: can't rely on clamping across versions */
1745         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
1746 }
1747
1748 bool
1749 Mixer_UI::on_key_press_event (GdkEventKey* ev)
1750 {
1751         /* focus widget gets first shot, then bindings, otherwise
1752            forward to main window
1753         */
1754
1755         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1756                 return true;
1757         }
1758
1759         KeyboardKey k (ev->state, ev->keyval);
1760
1761         if (bindings.activate (k, Bindings::Press)) {
1762                 return true;
1763         }
1764
1765         return forward_key_press (ev);
1766 }
1767
1768 bool
1769 Mixer_UI::on_key_release_event (GdkEventKey* ev)
1770 {
1771         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1772                 return true;
1773         }
1774
1775         KeyboardKey k (ev->state, ev->keyval);
1776
1777         if (bindings.activate (k, Bindings::Release)) {
1778                 return true;
1779         }
1780
1781         /* don't forward releases */
1782
1783         return true;
1784 }
1785
1786 bool
1787 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
1788 {
1789         switch (ev->direction) {
1790         case GDK_SCROLL_LEFT:
1791                 scroll_left ();
1792                 return true;
1793         case GDK_SCROLL_UP:
1794                 if (ev->state & Keyboard::TertiaryModifier) {
1795                         scroll_left ();
1796                         return true;
1797                 }
1798                 return false;
1799
1800         case GDK_SCROLL_RIGHT:
1801                 scroll_right ();
1802                 return true;
1803
1804         case GDK_SCROLL_DOWN:
1805                 if (ev->state & Keyboard::TertiaryModifier) {
1806                         scroll_right ();
1807                         return true;
1808                 }
1809                 return false;
1810         }
1811
1812         return false;
1813 }
1814
1815
1816 void
1817 Mixer_UI::parameter_changed (string const & p)
1818 {
1819         if (p == "show-group-tabs") {
1820                 bool const s = _session->config.get_show_group_tabs ();
1821                 if (s) {
1822                         _group_tabs->show ();
1823                 } else {
1824                         _group_tabs->hide ();
1825                 }
1826         } else if (p == "default-narrow_ms") {
1827                 bool const s = ARDOUR_UI::config()->get_default_narrow_ms ();
1828                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1829                         (*i)->set_width_enum (s ? Narrow : Wide, this);
1830                 }
1831         } else if (p == "remote-model") {
1832                 reset_remote_control_ids ();
1833         }
1834 }
1835
1836 void
1837 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
1838 {
1839         g->set_active (a, this);
1840 }
1841
1842 PluginSelector*
1843 Mixer_UI::plugin_selector()
1844 {
1845 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
1846         if (!_plugin_selector)
1847                 _plugin_selector = new PluginSelector (PluginManager::instance());
1848 #endif
1849
1850         return _plugin_selector;
1851 }
1852
1853 void
1854 Mixer_UI::setup_track_display ()
1855 {
1856         track_model = ListStore::create (track_columns);
1857         track_display.set_model (track_model);
1858         track_display.append_column (_("Strips"), track_columns.text);
1859         track_display.append_column (_("Show"), track_columns.visible);
1860         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
1861         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
1862         track_display.get_column (0)->set_expand(true);
1863         track_display.get_column (1)->set_expand(false);
1864         track_display.get_column (0)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
1865         track_display.set_name (X_("EditGroupList"));
1866         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
1867         track_display.set_reorderable (true);
1868         track_display.set_headers_visible (true);
1869
1870         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
1871         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
1872
1873         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
1874         track_list_visible_cell->property_activatable() = true;
1875         track_list_visible_cell->property_radio() = false;
1876         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
1877
1878         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
1879
1880         track_display_scroller.add (track_display);
1881         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
1882
1883         VBox* v = manage (new VBox);
1884         v->show ();
1885         v->pack_start (track_display_scroller, true, true);
1886
1887         Button* b = manage (new Button);
1888         b->show ();
1889         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
1890         w->show ();
1891         b->add (*w);
1892
1893         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
1894
1895         v->pack_start (*b, false, false);
1896
1897         track_display_frame.set_name("BaseFrame");
1898         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
1899         track_display_frame.add (*v);
1900
1901         track_display_scroller.show();
1902         track_display_frame.show();
1903         track_display.show();
1904 }
1905
1906 void
1907 Mixer_UI::new_track_or_bus ()
1908 {
1909         ARDOUR_UI::instance()->add_route (this);
1910 }
1911
1912
1913 void
1914 Mixer_UI::update_title ()
1915 {
1916         if (_session) {
1917                 string n;
1918
1919                 if (_session->snap_name() != _session->name()) {
1920                         n = _session->snap_name ();
1921                 } else {
1922                         n = _session->name ();
1923                 }
1924
1925                 if (_session->dirty ()) {
1926                         n = "*" + n;
1927                 }
1928
1929                 WindowTitle title (n);
1930                 title += S_("Window|Mixer");
1931                 title += Glib::get_application_name ();
1932                 set_title (title.get_string());
1933
1934         } else {
1935
1936                 WindowTitle title (S_("Window|Mixer"));
1937                 title += Glib::get_application_name ();
1938                 set_title (title.get_string());
1939         }
1940 }
1941
1942 MixerStrip*
1943 Mixer_UI::strip_by_x (int x)
1944 {
1945         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1946                 int x1, x2, y;
1947
1948                 (*i)->translate_coordinates (*this, 0, 0, x1, y);
1949                 x2 = x1 + (*i)->get_width();
1950
1951                 if (x >= x1 && x <= x2) {
1952                         return (*i);
1953                 }
1954         }
1955
1956         return 0;
1957 }
1958
1959 void
1960 Mixer_UI::set_route_targets_for_operation ()
1961 {
1962         _route_targets.clear ();
1963
1964         if (!_selection.empty()) {
1965                 _route_targets = _selection.routes;
1966                 return;
1967         }
1968
1969 //  removed "implicit" selections of strips, after discussion on IRC
1970
1971 }
1972
1973 void
1974 Mixer_UI::monitor_section_going_away ()
1975 {
1976         if (_monitor_section) {
1977                 out_packer.remove (_monitor_section->tearoff());
1978                 _monitor_section->set_session (0);
1979         }
1980 }
1981
1982 void
1983 Mixer_UI::toggle_midi_input_active (bool flip_others)
1984 {
1985         boost::shared_ptr<RouteList> rl (new RouteList);
1986         bool onoff = false;
1987
1988         set_route_targets_for_operation ();
1989
1990         for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
1991                 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
1992
1993                 if (mt) {
1994                         rl->push_back ((*r)->route());
1995                         onoff = !mt->input_active();
1996                 }
1997         }
1998
1999         _session->set_exclusive_input_active (rl, onoff, flip_others);
2000 }
2001
2002 void
2003 Mixer_UI::maximise_mixer_space ()
2004 {
2005         if (_maximised) {
2006                 return;
2007         }
2008
2009         fullscreen ();
2010
2011         _maximised = true;
2012 }
2013
2014 void
2015 Mixer_UI::restore_mixer_space ()
2016 {
2017         if (!_maximised) {
2018                 return;
2019         }
2020
2021         unfullscreen();
2022
2023         _maximised = false;
2024 }