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         , _plugin_selector (0)
  96         , _strip_width (ARDOUR_UI::config()->get_default_narrow_ms() ? Narrow : Wide)
  97         , ignore_reorder (false)
  98         , _in_group_rebuild_or_clear (false)
  99         , _route_deletion_in_progress (false)
 100         , _following_editor_selection (false)
 101         , _maximised (false)
 102 {
 103         /* allow this window to become the key focus window */
 104         set_flags (CAN_FOCUS);
 105
 106         Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_order_keys, this), gui_context());
 107
 108         scroller.set_can_default (true);
 109         set_default (scroller);
 110
 111         scroller_base.set_flags (Gtk::CAN_FOCUS);
 112         scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 113         scroller_base.set_name ("MixerWindow");
 114         scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 115         // add as last item of strip packer
 116         strip_packer.pack_end (scroller_base, true, true);
 117
 118         _group_tabs = new MixerGroupTabs (this);
 119         VBox* b = manage (new VBox);
 120         b->pack_start (*_group_tabs, PACK_SHRINK);
 121         b->pack_start (strip_packer);
 122         b->show_all ();
 123
 124         scroller.add (*b);
 125         scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 126
 127         setup_track_display ();
 128
 129         group_model = ListStore::create (group_columns);
 130         group_display.set_model (group_model);
 131         group_display.append_column (_("Group"), group_columns.text);
 132         group_display.append_column (_("Show"), group_columns.visible);
 133         group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
 134         group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
 135         group_display.get_column (0)->set_expand(true);
 136         group_display.get_column (1)->set_expand(false);
 137         group_display.set_name ("EditGroupList");
 138         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 139         group_display.set_reorderable (true);
 140         group_display.set_headers_visible (true);
 141         group_display.set_rules_hint (true);
 142
 143         /* name is directly editable */
 144
 145         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
 146         name_cell->property_editable() = true;
 147         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 148
 149         /* use checkbox for the active column */
 150
 151         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (1));
 152         active_cell->property_activatable() = true;
 153         active_cell->property_radio() = false;
 154
 155         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 156         /* We use this to notice drag-and-drop reorders of the group list */
 157         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 158         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 159
 160         group_display_scroller.add (group_display);
 161         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 162
 163         HBox* route_group_display_button_box = manage (new HBox());
 164
 165         Button* route_group_add_button = manage (new Button ());
 166         Button* route_group_remove_button = manage (new Button ());
 167
 168         Widget* w;
 169
 170         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 171         w->show();
 172         route_group_add_button->add (*w);
 173
 174         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
 175         w->show();
 176         route_group_remove_button->add (*w);
 177
 178         route_group_display_button_box->set_homogeneous (true);
 179
 180         route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
 181         route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
 182
 183         route_group_display_button_box->add (*route_group_add_button);
 184         route_group_display_button_box->add (*route_group_remove_button);
 185
 186         group_display_vbox.pack_start (group_display_scroller, true, true);
 187         group_display_vbox.pack_start (*route_group_display_button_box, false, false);
 188
 189         group_display_frame.set_name ("BaseFrame");
 190         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 191         group_display_frame.add (group_display_vbox);
 192
 193         rhs_pane1.pack1 (track_display_frame);
 194         rhs_pane1.pack2 (group_display_frame);
 195
 196         list_vpacker.pack_start (rhs_pane1, true, true);
 197
 198         global_hpacker.pack_start (scroller, true, true);
 199 #ifdef GTKOSX
 200         /* current gtk-quartz has dirty updates on borders like this one */
 201         global_hpacker.pack_start (out_packer, false, false, 0);
 202 #else
 203         global_hpacker.pack_start (out_packer, false, false, 12);
 204 #endif
 205         list_hpane.pack1(list_vpacker, false, false);
 206         list_hpane.pack2(global_hpacker, true, false);
 207
 208         rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 209                                                         static_cast<Gtk::Paned*> (&rhs_pane1)));
 210         list_hpane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 211                                                          static_cast<Gtk::Paned*> (&list_hpane)));
 212
 213         global_vpacker.pack_start (list_hpane, true, true);
 214
 215         add (global_vpacker);
 216         set_name ("MixerWindow");
 217
 218         update_title ();
 219
 220         set_wmclass (X_("ardour_mixer"), PROGRAM_NAME);
 221
 222         signal_delete_event().connect (sigc::mem_fun (*this, &Mixer_UI::hide_window));
 223         add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
 224
 225         signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
 226
 227         route_group_display_button_box->show();
 228         route_group_add_button->show();
 229         route_group_remove_button->show();
 230
 231         global_hpacker.show();
 232         global_vpacker.show();
 233         scroller.show();
 234         scroller_base.show();
 235         scroller_hpacker.show();
 236         mixer_scroller_vpacker.show();
 237         list_vpacker.show();
 238         group_display_button_label.show();
 239         group_display_button.show();
 240         group_display_scroller.show();
 241         group_display_vbox.show();
 242         group_display_frame.show();
 243         rhs_pane1.show();
 244         strip_packer.show();
 245         out_packer.show();
 246         list_hpane.show();
 247         group_display.show();
 248
 249         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 250
 251 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 252         _plugin_selector = new PluginSelector (PluginManager::instance ());
 253 #endif
 254 }
 255
 256 Mixer_UI::~Mixer_UI ()
 257 {
 258         if (_monitor_section) {
 259                 delete _monitor_section;
 260         }
 261         delete _plugin_selector;
 262 }
 263
 264 void
 265 Mixer_UI::track_editor_selection ()
 266 {
 267         PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
 268 }
 269
 270
 271 void
 272 Mixer_UI::ensure_float (Window& win)
 273 {
 274         win.set_transient_for (*this);
 275 }
 276
 277 void
 278 Mixer_UI::show_window ()
 279 {
 280         present ();
 281         if (!_visible) {
 282                 set_window_pos_and_size ();
 283
 284                 /* show/hide group tabs as required */
 285                 parameter_changed ("show-group-tabs");
 286
 287                 /* now reset each strips width so the right widgets are shown */
 288                 MixerStrip* ms;
 289
 290                 TreeModel::Children rows = track_model->children();
 291                 TreeModel::Children::iterator ri;
 292
 293                 for (ri = rows.begin(); ri != rows.end(); ++ri) {
 294                         ms = (*ri)[track_columns.strip];
 295                         ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 296                         /* Fix visibility of mixer strip stuff */
 297                         ms->parameter_changed (X_("mixer-element-visibility"));
 298                 }
 299         }
 300
 301         /* force focus into main area */
 302         scroller_base.grab_focus ();
 303
 304         _visible = true;
 305 }
 306
 307 bool
 308 Mixer_UI::hide_window (GdkEventAny *ev)
 309 {
 310         get_window_pos_and_size ();
 311
 312         _visible = false;
 313         return just_hide_it(ev, static_cast<Gtk::Window *>(this));
 314 }
 315
 316
 317 void
 318 Mixer_UI::add_strips (RouteList& routes)
 319 {
 320         bool from_scratch = track_model->children().size() == 0;
 321         Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 322
 323         for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
 324                 boost::shared_ptr<Route> r = (*it)[track_columns.route];
 325
 326                 if (r->order_key() == (routes.front()->order_key() + routes.size())) {
 327                         insert_iter = it;
 328                         break;
 329                 }
 330         }
 331
 332         if(!from_scratch) {
 333                 _selection.clear_routes ();
 334         }
 335
 336         MixerStrip* strip;
 337
 338         try {
 339                 no_track_list_redisplay = true;
 340                 track_display.set_model (Glib::RefPtr<ListStore>());
 341
 342                 for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
 343                         boost::shared_ptr<Route> route = (*x);
 344
 345                         if (route->is_auditioner()) {
 346                                 continue;
 347                         }
 348
 349                         if (route->is_monitor()) {
 350
 351                                 if (!_monitor_section) {
 352                                         _monitor_section = new MonitorSection (_session);
 353
 354                                         XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 355                                         if (mnode) {
 356                                                 _monitor_section->tearoff().set_state (*mnode);
 357                                         }
 358                                 }
 359
 360                                 out_packer.pack_end (_monitor_section->tearoff(), false, false);
 361                                 _monitor_section->set_session (_session);
 362                                 _monitor_section->tearoff().show_all ();
 363
 364                                 route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 365
 366                                 /* no regular strip shown for control out */
 367
 368                                 continue;
 369                         }
 370
 371                         strip = new MixerStrip (*this, _session, route);
 372                         strips.push_back (strip);
 373
 374                         ARDOUR_UI::config()->get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 375
 376                         if (strip->width_owner() != strip) {
 377                                 strip->set_width_enum (_strip_width, this);
 378                         }
 379
 380                         show_strip (strip);
 381
 382                         TreeModel::Row row = *(track_model->insert(insert_iter));
 383                         row[track_columns.text] = route->name();
 384                         row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
 385                         row[track_columns.route] = route;
 386                         row[track_columns.strip] = strip;
 387
 388                         if (!from_scratch) {
 389                                 _selection.add (strip);
 390                         }
 391
 392                         route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
 393
 394                         strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 395                         strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 396                 }
 397
 398         } catch (...) {
 399         }
 400
 401         no_track_list_redisplay = false;
 402         track_display.set_model (track_model);
 403
 404         sync_order_keys_from_treeview ();
 405         redisplay_track_list ();
 406 }
 407
 408 void
 409 Mixer_UI::deselect_all_strip_processors ()
 410 {
 411         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 412                 (*i)->deselect_all_processors();
 413         }
 414 }
 415
 416 void
 417 Mixer_UI::select_none ()
 418 {
 419         _selection.clear_routes();
 420         deselect_all_strip_processors();
 421 }
 422
 423 void
 424 Mixer_UI::delete_processors ()
 425 {
 426         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 427                 (*i)->delete_processors();
 428         }
 429 }
 430
 431
 432 void
 433 Mixer_UI::remove_strip (MixerStrip* strip)
 434 {
 435         if (_session && _session->deletion_in_progress()) {
 436                 /* its all being taken care of */
 437                 return;
 438         }
 439
 440         TreeModel::Children rows = track_model->children();
 441         TreeModel::Children::iterator ri;
 442         list<MixerStrip *>::iterator i;
 443
 444         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 445                 strips.erase (i);
 446         }
 447
 448         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 449                 if ((*ri)[track_columns.strip] == strip) {
 450                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 451                         track_model->erase (ri);
 452                         break;
 453                 }
 454         }
 455 }
 456
 457 void
 458 Mixer_UI::reset_remote_control_ids ()
 459 {
 460         if (Config->get_remote_model() == UserOrdered || !_session || _session->deletion_in_progress()) {
 461                 return;
 462         }
 463
 464         TreeModel::Children rows = track_model->children();
 465
 466         if (rows.empty()) {
 467                 return;
 468         }
 469
 470         DEBUG_TRACE (DEBUG::OrderKeys, "mixer resets remote control ids after remote model change\n");
 471
 472         TreeModel::Children::iterator ri;
 473         bool rid_change = false;
 474         uint32_t rid = 1;
 475         uint32_t invisible_key = UINT32_MAX;
 476
 477         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 478
 479                 /* skip two special values */
 480
 481                 if (rid == Route::MasterBusRemoteControlID) {
 482                         rid++;
 483                 }
 484
 485                 if (rid == Route::MonitorBusRemoteControlID) {
 486                         rid++;
 487                 }
 488
 489                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 490                 bool visible = (*ri)[track_columns.visible];
 491
 492                 if (!route->is_master() && !route->is_monitor()) {
 493
 494                         uint32_t new_rid = (visible ? rid : invisible_key--);
 495
 496                         if (new_rid != route->remote_control_id()) {
 497                                 route->set_remote_control_id_explicit (new_rid);
 498                                 rid_change = true;
 499                         }
 500
 501                         if (visible) {
 502                                 rid++;
 503                         }
 504                 }
 505         }
 506
 507         if (rid_change) {
 508                 /* tell the world that we changed the remote control IDs */
 509                 _session->notify_remote_id_change ();
 510         }
 511 }
 512
 513 void
 514 Mixer_UI::sync_order_keys_from_treeview ()
 515 {
 516         if (ignore_reorder || !_session || _session->deletion_in_progress()) {
 517                 return;
 518         }
 519
 520         TreeModel::Children rows = track_model->children();
 521
 522         if (rows.empty()) {
 523                 return;
 524         }
 525
 526         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
 527
 528         TreeModel::Children::iterator ri;
 529         bool changed = false;
 530         bool rid_change = false;
 531         uint32_t order = 0;
 532         uint32_t rid = 1;
 533         uint32_t invisible_key = UINT32_MAX;
 534
 535         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 536                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 537                 bool visible = (*ri)[track_columns.visible];
 538
 539                 uint32_t old_key = route->order_key ();
 540
 541                 if (order != old_key) {
 542                         route->set_order_key (order);
 543                         changed = true;
 544                 }
 545
 546                 if ((Config->get_remote_model() == MixerOrdered) && !route->is_master() && !route->is_monitor()) {
 547
 548                         uint32_t new_rid = (visible ? rid : invisible_key--);
 549
 550                         if (new_rid != route->remote_control_id()) {
 551                                 route->set_remote_control_id_explicit (new_rid);
 552                                 rid_change = true;
 553                         }
 554
 555                         if (visible) {
 556                                 rid++;
 557                         }
 558
 559                 }
 560
 561                 ++order;
 562         }
 563
 564         if (changed) {
 565                 /* tell everyone that we changed the mixer sort keys */
 566                 _session->sync_order_keys ();
 567         }
 568
 569         if (rid_change) {
 570                 /* tell the world that we changed the remote control IDs */
 571                 _session->notify_remote_id_change ();
 572         }
 573 }
 574
 575 void
 576 Mixer_UI::sync_treeview_from_order_keys ()
 577 {
 578         if (!_session || _session->deletion_in_progress()) {
 579                 return;
 580         }
 581
 582         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from order keys.\n");
 583
 584         /* we could get here after either a change in the Mixer or Editor sort
 585          * order, but either way, the mixer order keys reflect the intended
 586          * order for the GUI, so reorder the treeview model to match it.
 587          */
 588
 589         vector<int> neworder;
 590         TreeModel::Children rows = track_model->children();
 591         uint32_t old_order = 0;
 592         bool changed = false;
 593
 594         if (rows.empty()) {
 595                 return;
 596         }
 597
 598         OrderKeySortedRoutes sorted_routes;
 599
 600         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 601                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 602                 sorted_routes.push_back (RoutePlusOrderKey (route, old_order, route->order_key ()));
 603         }
 604
 605         SortByNewDisplayOrder cmp;
 606
 607         sort (sorted_routes.begin(), sorted_routes.end(), cmp);
 608         neworder.assign (sorted_routes.size(), 0);
 609
 610         uint32_t n = 0;
 611
 612         for (OrderKeySortedRoutes::iterator sr = sorted_routes.begin(); sr != sorted_routes.end(); ++sr, ++n) {
 613
 614                 neworder[n] = sr->old_display_order;
 615
 616                 if (sr->old_display_order != n) {
 617                         changed = true;
 618                 }
 619
 620                 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order for %1 from %2 to %3\n",
 621                                                                sr->route->name(), sr->old_display_order, n));
 622         }
 623
 624         if (changed) {
 625                 Unwinder<bool> uw (ignore_reorder, true);
 626                 track_model->reorder (neworder);
 627         }
 628
 629         redisplay_track_list ();
 630 }
 631
 632 void
 633 Mixer_UI::follow_editor_selection ()
 634 {
 635         if (_following_editor_selection) {
 636                 return;
 637         }
 638
 639         _following_editor_selection = true;
 640         _selection.block_routes_changed (true);
 641
 642         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 643
 644         _selection.clear_routes ();
 645
 646         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 647                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
 648                 if (rtav) {
 649                         MixerStrip* ms = strip_by_route (rtav->route());
 650                         if (ms) {
 651                                 _selection.add (ms);
 652                         }
 653                 }
 654         }
 655
 656         _following_editor_selection = false;
 657         _selection.block_routes_changed (false);
 658 }
 659
 660
 661 MixerStrip*
 662 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 663 {
 664         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 665                 if ((*i)->route() == r) {
 666                         return (*i);
 667                 }
 668         }
 669
 670         return 0;
 671 }
 672
 673 bool
 674 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 675 {
 676         if (ev->button == 1) {
 677                 if (_selection.selected (strip)) {
 678                         /* primary-click: toggle selection state of strip */
 679                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 680                                 _selection.remove (strip);
 681                         } else if (_selection.routes.size() > 1) {
 682                                 /* de-select others */
 683                                 _selection.set (strip);
 684                         }
 685                 } else {
 686                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 687                                 _selection.add (strip);
 688                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 689
 690                                 if (!_selection.selected(strip)) {
 691
 692                                         /* extend selection */
 693
 694                                         vector<MixerStrip*> tmp;
 695                                         bool accumulate = false;
 696                                         bool found_another = false;
 697
 698                                         tmp.push_back (strip);
 699
 700                                         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 701                                                 if ((*i) == strip) {
 702                                                         /* hit clicked strip, start accumulating till we hit the first
 703                                                            selected strip
 704                                                         */
 705                                                         if (accumulate) {
 706                                                                 /* done */
 707                                                                 break;
 708                                                         } else {
 709                                                                 accumulate = true;
 710                                                         }
 711                                                 } else if (_selection.selected (*i)) {
 712                                                         /* hit selected strip. if currently accumulating others,
 713                                                            we're done. if not accumulating others, start doing so.
 714                                                         */
 715                                                         found_another = true;
 716                                                         if (accumulate) {
 717                                                                 /* done */
 718                                                                 break;
 719                                                         } else {
 720                                                                 accumulate = true;
 721                                                         }
 722                                                 } else {
 723                                                         if (accumulate) {
 724                                                                 tmp.push_back (*i);
 725                                                         }
 726                                                 }
 727                                         }
 728
 729                                         if (found_another) {
 730                                                 for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 731                                                         _selection.add (*i);
 732                                                 }
 733                                         } else
 734                                                 _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
 735                                 }
 736
 737                         } else {
 738                                 _selection.set (strip);
 739                         }
 740                 }
 741         }
 742
 743         return true;
 744 }
 745
 746 void
 747 Mixer_UI::set_session (Session* sess)
 748 {
 749         SessionHandlePtr::set_session (sess);
 750
 751         if (_plugin_selector) {
 752                 _plugin_selector->set_session (_session);
 753         }
 754
 755         _group_tabs->set_session (sess);
 756
 757         if (!_session) {
 758                 return;
 759         }
 760
 761         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 762         set_state (*node);
 763
 764         update_title ();
 765
 766         initial_track_display ();
 767
 768         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
 769         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 770         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 771         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 772         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 773         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 774         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 775
 776         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 777
 778         route_groups_changed ();
 779
 780         if (_visible) {
 781                 show_window();
 782         }
 783
 784         start_updating ();
 785 }
 786
 787 void
 788 Mixer_UI::session_going_away ()
 789 {
 790         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 791
 792         _in_group_rebuild_or_clear = true;
 793         group_model->clear ();
 794         _in_group_rebuild_or_clear = false;
 795
 796         _selection.clear ();
 797         track_model->clear ();
 798
 799         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 800                 delete (*i);
 801         }
 802
 803         if (_monitor_section) {
 804                 _monitor_section->tearoff().hide_visible ();
 805         }
 806
 807         strips.clear ();
 808
 809         stop_updating ();
 810
 811         SessionHandlePtr::session_going_away ();
 812
 813         _session = 0;
 814         update_title ();
 815 }
 816
 817 void
 818 Mixer_UI::track_visibility_changed (std::string const & path)
 819 {
 820         if (_session && _session->deletion_in_progress()) {
 821                 return;
 822         }
 823
 824         TreeIter iter;
 825
 826         if ((iter = track_model->get_iter (path))) {
 827                 MixerStrip* strip = (*iter)[track_columns.strip];
 828                 if (strip) {
 829                         bool visible = (*iter)[track_columns.visible];
 830
 831                         if (strip->set_marked_for_display (!visible)) {
 832                                 update_track_visibility ();
 833                         }
 834                 }
 835         }
 836 }
 837
 838 void
 839 Mixer_UI::update_track_visibility ()
 840 {
 841         TreeModel::Children rows = track_model->children();
 842         TreeModel::Children::iterator i;
 843
 844         {
 845                 Unwinder<bool> uw (no_track_list_redisplay, true);
 846
 847                 for (i = rows.begin(); i != rows.end(); ++i) {
 848                         MixerStrip *strip = (*i)[track_columns.strip];
 849                         (*i)[track_columns.visible] = strip->marked_for_display ();
 850                 }
 851
 852                 /* force route order keys catch up with visibility changes
 853                  */
 854
 855                 sync_order_keys_from_treeview ();
 856         }
 857
 858         redisplay_track_list ();
 859 }
 860
 861 void
 862 Mixer_UI::show_strip (MixerStrip* ms)
 863 {
 864         TreeModel::Children rows = track_model->children();
 865         TreeModel::Children::iterator i;
 866
 867         for (i = rows.begin(); i != rows.end(); ++i) {
 868
 869                 MixerStrip* strip = (*i)[track_columns.strip];
 870                 if (strip == ms) {
 871                         (*i)[track_columns.visible] = true;
 872                         redisplay_track_list ();
 873                         break;
 874                 }
 875         }
 876 }
 877
 878 void
 879 Mixer_UI::hide_strip (MixerStrip* ms)
 880 {
 881         TreeModel::Children rows = track_model->children();
 882         TreeModel::Children::iterator i;
 883
 884         for (i = rows.begin(); i != rows.end(); ++i) {
 885
 886                 MixerStrip* strip = (*i)[track_columns.strip];
 887                 if (strip == ms) {
 888                         (*i)[track_columns.visible] = false;
 889                         redisplay_track_list ();
 890                         break;
 891                 }
 892         }
 893 }
 894
 895 gint
 896 Mixer_UI::start_updating ()
 897 {
 898     fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
 899     return 0;
 900 }
 901
 902 gint
 903 Mixer_UI::stop_updating ()
 904 {
 905     fast_screen_update_connection.disconnect();
 906     return 0;
 907 }
 908
 909 void
 910 Mixer_UI::fast_update_strips ()
 911 {
 912         if (is_mapped () && _session) {
 913                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 914                         (*i)->fast_update ();
 915                 }
 916         }
 917 }
 918
 919 void
 920 Mixer_UI::set_all_strips_visibility (bool yn)
 921 {
 922         TreeModel::Children rows = track_model->children();
 923         TreeModel::Children::iterator i;
 924
 925         {
 926                 Unwinder<bool> uw (no_track_list_redisplay, true);
 927
 928                 for (i = rows.begin(); i != rows.end(); ++i) {
 929
 930                         TreeModel::Row row = (*i);
 931                         MixerStrip* strip = row[track_columns.strip];
 932
 933                         if (strip == 0) {
 934                                 continue;
 935                         }
 936
 937                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 938                                 continue;
 939                         }
 940
 941                         (*i)[track_columns.visible] = yn;
 942                 }
 943         }
 944
 945         redisplay_track_list ();
 946 }
 947
 948
 949 void
 950 Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
 951 {
 952         TreeModel::Children rows = track_model->children();
 953         TreeModel::Children::iterator i;
 954
 955         {
 956                 Unwinder<bool> uw (no_track_list_redisplay, true);
 957
 958                 for (i = rows.begin(); i != rows.end(); ++i) {
 959                         TreeModel::Row row = (*i);
 960                         MixerStrip* strip = row[track_columns.strip];
 961
 962                         if (strip == 0) {
 963                                 continue;
 964                         }
 965
 966                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 967                                 continue;
 968                         }
 969
 970                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
 971                         boost::shared_ptr<MidiTrack> mt = strip->midi_track();
 972
 973                         switch (tracks) {
 974                         case 0:
 975                                 (*i)[track_columns.visible] = yn;
 976                                 break;
 977
 978                         case 1:
 979                                 if (at) { /* track */
 980                                         (*i)[track_columns.visible] = yn;
 981                                 }
 982                                 break;
 983
 984                         case 2:
 985                                 if (!at && !mt) { /* bus */
 986                                         (*i)[track_columns.visible] = yn;
 987                                 }
 988                                 break;
 989
 990                         case 3:
 991                                 if (mt) { /* midi-track */
 992                                         (*i)[track_columns.visible] = yn;
 993                                 }
 994                                 break;
 995                         }
 996                 }
 997         }
 998
 999         redisplay_track_list ();
1000 }
1001
1002 void
1003 Mixer_UI::hide_all_routes ()
1004 {
1005         set_all_strips_visibility (false);
1006 }
1007
1008 void
1009 Mixer_UI::show_all_routes ()
1010 {
1011         set_all_strips_visibility (true);
1012 }
1013
1014 void
1015 Mixer_UI::show_all_audiobus ()
1016 {
1017         set_all_audio_midi_visibility (2, true);
1018 }
1019 void
1020 Mixer_UI::hide_all_audiobus ()
1021 {
1022         set_all_audio_midi_visibility (2, false);
1023 }
1024
1025 void
1026 Mixer_UI::show_all_audiotracks()
1027 {
1028         set_all_audio_midi_visibility (1, true);
1029 }
1030 void
1031 Mixer_UI::hide_all_audiotracks ()
1032 {
1033         set_all_audio_midi_visibility (1, false);
1034 }
1035
1036 void
1037 Mixer_UI::show_all_miditracks()
1038 {
1039         set_all_audio_midi_visibility (3, true);
1040 }
1041 void
1042 Mixer_UI::hide_all_miditracks ()
1043 {
1044         set_all_audio_midi_visibility (3, false);
1045 }
1046
1047
1048 void
1049 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1050 {
1051         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1052         sync_order_keys_from_treeview ();
1053 }
1054
1055 void
1056 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1057 {
1058         /* this happens as the second step of a DnD within the treeview as well
1059            as when a row/route is actually deleted.
1060
1061            if it was a deletion then we have to force a redisplay because
1062            order keys may not have changed.
1063         */
1064
1065         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1066         sync_order_keys_from_treeview ();
1067
1068         if (_route_deletion_in_progress) {
1069                 redisplay_track_list ();
1070         }
1071 }
1072
1073 void
1074 Mixer_UI::redisplay_track_list ()
1075 {
1076         TreeModel::Children rows = track_model->children();
1077         TreeModel::Children::iterator i;
1078
1079         if (no_track_list_redisplay) {
1080                 return;
1081         }
1082
1083         for (i = rows.begin(); i != rows.end(); ++i) {
1084
1085                 MixerStrip* strip = (*i)[track_columns.strip];
1086
1087                 if (strip == 0) {
1088                         /* we're in the middle of changing a row, don't worry */
1089                         continue;
1090                 }
1091
1092                 bool const visible = (*i)[track_columns.visible];
1093
1094                 if (visible) {
1095                         strip->set_gui_property ("visible", true);
1096
1097                         if (strip->packed()) {
1098
1099                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1100                                         out_packer.reorder_child (*strip, -1);
1101
1102                                 } else {
1103                                         strip_packer.reorder_child (*strip, -1); /* put at end */
1104                                 }
1105
1106                         } else {
1107
1108                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1109                                         out_packer.pack_start (*strip, false, false);
1110                                 } else {
1111                                         strip_packer.pack_start (*strip, false, false);
1112                                 }
1113                                 strip->set_packed (true);
1114                         }
1115
1116                 } else {
1117
1118                         strip->set_gui_property ("visible", false);
1119
1120                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1121                                 /* do nothing, these cannot be hidden */
1122                         } else {
1123                                 if (strip->packed()) {
1124                                         strip_packer.remove (*strip);
1125                                         strip->set_packed (false);
1126                                 }
1127                         }
1128                 }
1129         }
1130
1131         _group_tabs->set_dirty ();
1132 }
1133
1134 void
1135 Mixer_UI::strip_width_changed ()
1136 {
1137         _group_tabs->set_dirty ();
1138
1139 #ifdef GTKOSX
1140         TreeModel::Children rows = track_model->children();
1141         TreeModel::Children::iterator i;
1142         long order;
1143
1144         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1145                 MixerStrip* strip = (*i)[track_columns.strip];
1146
1147                 if (strip == 0) {
1148                         continue;
1149                 }
1150
1151                 bool visible = (*i)[track_columns.visible];
1152
1153                 if (visible) {
1154                         strip->queue_draw();
1155                 }
1156         }
1157 #endif
1158
1159 }
1160
1161 void
1162 Mixer_UI::initial_track_display ()
1163 {
1164         boost::shared_ptr<RouteList> routes = _session->get_routes();
1165         RouteList copy (*routes);
1166         ARDOUR::SignalOrderRouteSorter sorter;
1167
1168         copy.sort (sorter);
1169
1170         {
1171                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1172                 Unwinder<bool> uw2 (ignore_reorder, true);
1173
1174                 track_model->clear ();
1175                 add_strips (copy);
1176         }
1177
1178         _session->sync_order_keys ();
1179
1180         redisplay_track_list ();
1181 }
1182
1183 void
1184 Mixer_UI::show_track_list_menu ()
1185 {
1186         if (track_menu == 0) {
1187                 build_track_menu ();
1188         }
1189
1190         track_menu->popup (1, gtk_get_current_event_time());
1191 }
1192
1193 bool
1194 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1195 {
1196         if (Keyboard::is_context_menu_event (ev)) {
1197                 show_track_list_menu ();
1198                 return true;
1199         }
1200
1201         return false;
1202 }
1203
1204 void
1205 Mixer_UI::build_track_menu ()
1206 {
1207         using namespace Menu_Helpers;
1208         using namespace Gtk;
1209
1210         track_menu = new Menu;
1211         track_menu->set_name ("ArdourContextMenu");
1212         MenuList& items = track_menu->items();
1213
1214         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1215         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1216         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1217         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1218         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1219         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1220         items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
1221         items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
1222
1223 }
1224
1225 void
1226 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1227 {
1228         if (!what_changed.contains (ARDOUR::Properties::name)) {
1229                 return;
1230         }
1231
1232         ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1233
1234         TreeModel::Children rows = track_model->children();
1235         TreeModel::Children::iterator i;
1236
1237         for (i = rows.begin(); i != rows.end(); ++i) {
1238                 if ((*i)[track_columns.strip] == mx) {
1239                         (*i)[track_columns.text] = mx->route()->name();
1240                         return;
1241                 }
1242         }
1243
1244         error << _("track display list item for renamed strip not found!") << endmsg;
1245 }
1246
1247 bool
1248 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1249 {
1250         TreeModel::Path path;
1251         TreeViewColumn* column;
1252         int cellx;
1253         int celly;
1254
1255         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1256                 _group_tabs->get_menu(0)->popup (1, ev->time);
1257                 return true;
1258         }
1259
1260         TreeIter iter = group_model->get_iter (path);
1261         if (!iter) {
1262                 _group_tabs->get_menu(0)->popup (1, ev->time);
1263                 return true;
1264         }
1265
1266         RouteGroup* group = (*iter)[group_columns.group];
1267
1268         if (Keyboard::is_context_menu_event (ev)) {
1269                 _group_tabs->get_menu(group)->popup (1, ev->time);
1270                 return true;
1271         }
1272
1273         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1274         case 0:
1275                 if (Keyboard::is_edit_event (ev)) {
1276                         if (group) {
1277                                 // edit_route_group (group);
1278 #ifdef GTKOSX
1279                                 group_display.queue_draw();
1280 #endif
1281                                 return true;
1282                         }
1283                 }
1284                 break;
1285
1286         case 1:
1287         {
1288                 bool visible = (*iter)[group_columns.visible];
1289                 (*iter)[group_columns.visible] = !visible;
1290 #ifdef GTKOSX
1291                 group_display.queue_draw();
1292 #endif
1293                 return true;
1294         }
1295
1296         default:
1297                 break;
1298         }
1299
1300         return false;
1301  }
1302
1303 void
1304 Mixer_UI::activate_all_route_groups ()
1305 {
1306         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1307 }
1308
1309 void
1310 Mixer_UI::disable_all_route_groups ()
1311 {
1312         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1313 }
1314
1315 void
1316 Mixer_UI::route_groups_changed ()
1317 {
1318         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1319
1320         _in_group_rebuild_or_clear = true;
1321
1322         /* just rebuild the while thing */
1323
1324         group_model->clear ();
1325
1326 #if 0
1327         /* this is currently not used,
1328          * Mixer_UI::group_display_button_press() has a case for it,
1329          * and a commented edit_route_group() but that's n/a since 2011.
1330          *
1331          * This code is left as reminder that
1332          * row[group_columns.group] = 0 has special meaning.
1333          */
1334         {
1335                 TreeModel::Row row;
1336                 row = *(group_model->append());
1337                 row[group_columns.visible] = true;
1338                 row[group_columns.text] = (_("-all-"));
1339                 row[group_columns.group] = 0;
1340         }
1341 #endif
1342
1343         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1344
1345         _group_tabs->set_dirty ();
1346         _in_group_rebuild_or_clear = false;
1347 }
1348
1349 void
1350 Mixer_UI::new_route_group ()
1351 {
1352         RouteList rl;
1353
1354         _group_tabs->run_new_group_dialog (rl);
1355 }
1356
1357 void
1358 Mixer_UI::remove_selected_route_group ()
1359 {
1360         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1361         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1362
1363         if (rows.empty()) {
1364                 return;
1365         }
1366
1367         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1368         TreeIter iter;
1369
1370         /* selection mode is single, so rows.begin() is it */
1371
1372         if ((iter = group_model->get_iter (*i))) {
1373
1374                 RouteGroup* rg = (*iter)[group_columns.group];
1375
1376                 if (rg) {
1377                         _session->remove_route_group (*rg);
1378                 }
1379         }
1380 }
1381
1382 void
1383 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1384 {
1385         if (in_group_row_change) {
1386                 return;
1387         }
1388
1389         /* force an update of any mixer strips that are using this group,
1390            otherwise mix group names don't change in mixer strips
1391         */
1392
1393         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1394                 if ((*i)->route_group() == group) {
1395                         (*i)->route_group_changed();
1396                 }
1397         }
1398
1399         TreeModel::iterator i;
1400         TreeModel::Children rows = group_model->children();
1401         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1402
1403         in_group_row_change = true;
1404
1405         for (i = rows.begin(); i != rows.end(); ++i) {
1406                 if ((*i)[group_columns.group] == group) {
1407                         (*i)[group_columns.visible] = !group->is_hidden ();
1408                         (*i)[group_columns.text] = group->name ();
1409                         break;
1410                 }
1411         }
1412
1413         in_group_row_change = false;
1414
1415         if (change.contains (Properties::name)) {
1416                 _group_tabs->set_dirty ();
1417         }
1418
1419         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1420                 if ((*j)->route_group() == group) {
1421                         if (group->is_hidden ()) {
1422                                 hide_strip (*j);
1423                         } else {
1424                                 show_strip (*j);
1425                         }
1426                 }
1427         }
1428 }
1429
1430 void
1431 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1432 {
1433         RouteGroup* group;
1434         TreeIter iter;
1435
1436         if ((iter = group_model->get_iter (path))) {
1437
1438                 if ((group = (*iter)[group_columns.group]) == 0) {
1439                         return;
1440                 }
1441
1442                 if (new_text != group->name()) {
1443                         group->set_name (new_text);
1444                 }
1445         }
1446 }
1447
1448 void
1449 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1450 {
1451         RouteGroup* group;
1452
1453         if (in_group_row_change) {
1454                 return;
1455         }
1456
1457         if ((group = (*iter)[group_columns.group]) == 0) {
1458                 return;
1459         }
1460
1461         std::string name = (*iter)[group_columns.text];
1462
1463         if (name != group->name()) {
1464                 group->set_name (name);
1465         }
1466
1467         bool hidden = !(*iter)[group_columns.visible];
1468
1469         if (hidden != group->is_hidden ()) {
1470                 group->set_hidden (hidden, this);
1471         }
1472 }
1473
1474 /** Called when a group model row is deleted, but also when the model is
1475  *  reordered by a user drag-and-drop; the latter is what we are
1476  *  interested in here.
1477  */
1478 void
1479 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1480 {
1481         if (_in_group_rebuild_or_clear) {
1482                 return;
1483         }
1484
1485         /* Re-write the session's route group list so that the new order is preserved */
1486
1487         list<RouteGroup*> new_list;
1488
1489         Gtk::TreeModel::Children children = group_model->children();
1490         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1491                 RouteGroup* g = (*i)[group_columns.group];
1492                 if (g) {
1493                         new_list.push_back (g);
1494                 }
1495         }
1496
1497         _session->reorder_route_groups (new_list);
1498 }
1499
1500
1501 void
1502 Mixer_UI::add_route_group (RouteGroup* group)
1503 {
1504         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1505         bool focus = false;
1506
1507         in_group_row_change = true;
1508
1509         TreeModel::Row row = *(group_model->append());
1510         row[group_columns.visible] = !group->is_hidden ();
1511         row[group_columns.group] = group;
1512         if (!group->name().empty()) {
1513                 row[group_columns.text] = group->name();
1514         } else {
1515                 row[group_columns.text] = _("unnamed");
1516                 focus = true;
1517         }
1518
1519         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1520
1521         if (focus) {
1522                 TreeViewColumn* col = group_display.get_column (0);
1523                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1524                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1525         }
1526
1527         _group_tabs->set_dirty ();
1528
1529         in_group_row_change = false;
1530 }
1531
1532 bool
1533 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1534 {
1535         using namespace Menu_Helpers;
1536
1537         if (Keyboard::is_context_menu_event (ev)) {
1538                 ARDOUR_UI::instance()->add_route (this);
1539                 return true;
1540         }
1541
1542         return false;
1543 }
1544
1545 void
1546 Mixer_UI::set_strip_width (Width w, bool save)
1547 {
1548         _strip_width = w;
1549
1550         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1551                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1552         }
1553 }
1554
1555 void
1556 Mixer_UI::set_window_pos_and_size ()
1557 {
1558         resize (m_width, m_height);
1559         move (m_root_x, m_root_y);
1560 }
1561
1562         void
1563 Mixer_UI::get_window_pos_and_size ()
1564 {
1565         get_position(m_root_x, m_root_y);
1566         get_size(m_width, m_height);
1567 }
1568
1569 int
1570 Mixer_UI::set_state (const XMLNode& node)
1571 {
1572         const XMLProperty* prop;
1573         XMLNode* geometry;
1574
1575         m_width = default_width;
1576         m_height = default_height;
1577         m_root_x = 1;
1578         m_root_y = 1;
1579
1580         if ((geometry = find_named_node (node, "geometry")) != 0) {
1581
1582                 XMLProperty* prop;
1583
1584                 if ((prop = geometry->property("x_size")) == 0) {
1585                         prop = geometry->property ("x-size");
1586                 }
1587                 if (prop) {
1588                         m_width = atoi(prop->value());
1589                 }
1590                 if ((prop = geometry->property("y_size")) == 0) {
1591                         prop = geometry->property ("y-size");
1592                 }
1593                 if (prop) {
1594                         m_height = atoi(prop->value());
1595                 }
1596
1597                 if ((prop = geometry->property ("x_pos")) == 0) {
1598                         prop = geometry->property ("x-pos");
1599                 }
1600                 if (prop) {
1601                         m_root_x = atoi (prop->value());
1602
1603                 }
1604                 if ((prop = geometry->property ("y_pos")) == 0) {
1605                         prop = geometry->property ("y-pos");
1606                 }
1607                 if (prop) {
1608                         m_root_y = atoi (prop->value());
1609                 }
1610         }
1611
1612         set_window_pos_and_size ();
1613
1614         if ((prop = node.property ("narrow-strips"))) {
1615                 if (string_is_affirmative (prop->value())) {
1616                         set_strip_width (Narrow);
1617                 } else {
1618                         set_strip_width (Wide);
1619                 }
1620         }
1621
1622         if ((prop = node.property ("show-mixer"))) {
1623                 if (string_is_affirmative (prop->value())) {
1624                        _visible = true;
1625                 }
1626         }
1627
1628         if ((prop = node.property ("maximised"))) {
1629                 bool yn = string_is_affirmative (prop->value());
1630                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1631                 assert (act);
1632                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1633                 bool fs = tact && tact->get_active();
1634                 if (yn ^ fs) {
1635                         ActionManager::do_action ("Common",
1636                                         "ToggleMaximalMixer");
1637                 }
1638         }
1639
1640
1641         return 0;
1642 }
1643
1644 XMLNode&
1645 Mixer_UI::get_state (void)
1646 {
1647         XMLNode* node = new XMLNode ("Mixer");
1648
1649         if (is_realized()) {
1650                 Glib::RefPtr<Gdk::Window> win = get_window();
1651
1652                 get_window_pos_and_size ();
1653
1654                 XMLNode* geometry = new XMLNode ("geometry");
1655                 char buf[32];
1656                 snprintf(buf, sizeof(buf), "%d", m_width);
1657                 geometry->add_property(X_("x_size"), string(buf));
1658                 snprintf(buf, sizeof(buf), "%d", m_height);
1659                 geometry->add_property(X_("y_size"), string(buf));
1660                 snprintf(buf, sizeof(buf), "%d", m_root_x);
1661                 geometry->add_property(X_("x_pos"), string(buf));
1662                 snprintf(buf, sizeof(buf), "%d", m_root_y);
1663                 geometry->add_property(X_("y_pos"), string(buf));
1664
1665                 // written only for compatibility, they are not used.
1666                 snprintf(buf, sizeof(buf), "%d", 0);
1667                 geometry->add_property(X_("x_off"), string(buf));
1668                 snprintf(buf, sizeof(buf), "%d", 0);
1669                 geometry->add_property(X_("y_off"), string(buf));
1670
1671                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&rhs_pane1)->gobj()));
1672                 geometry->add_property(X_("mixer_rhs_pane1_pos"), string(buf));
1673                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&list_hpane)->gobj()));
1674                 geometry->add_property(X_("mixer_list_hpane_pos"), string(buf));
1675
1676                 node->add_child_nocopy (*geometry);
1677         }
1678
1679         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1680
1681         node->add_property ("show-mixer", _visible ? "yes" : "no");
1682
1683         node->add_property ("maximised", _maximised ? "yes" : "no");
1684
1685         return *node;
1686 }
1687
1688
1689 void
1690 Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
1691 {
1692         int pos;
1693         XMLProperty* prop = 0;
1694         char buf[32];
1695         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
1696         XMLNode* geometry;
1697         int height;
1698         static int32_t done[3] = { 0, 0, 0 };
1699
1700         height = default_height;
1701
1702         if ((geometry = find_named_node (*node, "geometry")) != 0) {
1703
1704                 if ((prop = geometry->property ("y_size")) == 0) {
1705                         prop = geometry->property ("y-size");
1706                 }
1707                 if (prop) {
1708                         height = atoi (prop->value());
1709                 }
1710         }
1711
1712         if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
1713
1714                 if (done[0]) {
1715                         return;
1716                 }
1717
1718                 if (!geometry || (prop = geometry->property("mixer-rhs-pane1-pos")) == 0) {
1719                         pos = height / 3;
1720                         snprintf (buf, sizeof(buf), "%d", pos);
1721                 } else {
1722                         pos = atoi (prop->value());
1723                 }
1724
1725                 if ((done[0] = GTK_WIDGET(rhs_pane1.gobj())->allocation.height > pos)) {
1726                         rhs_pane1.set_position (pos);
1727                 }
1728
1729         } else if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
1730
1731                 if (done[2]) {
1732                         return;
1733                 }
1734
1735                 if (!geometry || (prop = geometry->property("mixer-list-hpane-pos")) == 0) {
1736                         pos = 75;
1737                         snprintf (buf, sizeof(buf), "%d", pos);
1738                 } else {
1739                         pos = atoi (prop->value());
1740                 }
1741
1742                 if ((done[2] = GTK_WIDGET(list_hpane.gobj())->allocation.width > pos)) {
1743                         list_hpane.set_position (pos);
1744                 }
1745         }
1746 }
1747 void
1748 Mixer_UI::scroll_left ()
1749 {
1750         if (!scroller.get_hscrollbar()) return;
1751         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1752         /* stupid GTK: can't rely on clamping across versions */
1753         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
1754 }
1755
1756 void
1757 Mixer_UI::scroll_right ()
1758 {
1759         if (!scroller.get_hscrollbar()) return;
1760         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1761         /* stupid GTK: can't rely on clamping across versions */
1762         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
1763 }
1764
1765 bool
1766 Mixer_UI::on_key_press_event (GdkEventKey* ev)
1767 {
1768         /* focus widget gets first shot, then bindings, otherwise
1769            forward to main window
1770         */
1771
1772         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1773                 return true;
1774         }
1775
1776         KeyboardKey k (ev->state, ev->keyval);
1777
1778         if (bindings.activate (k, Bindings::Press)) {
1779                 return true;
1780         }
1781
1782         return forward_key_press (ev);
1783 }
1784
1785 bool
1786 Mixer_UI::on_key_release_event (GdkEventKey* ev)
1787 {
1788         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1789                 return true;
1790         }
1791
1792         KeyboardKey k (ev->state, ev->keyval);
1793
1794         if (bindings.activate (k, Bindings::Release)) {
1795                 return true;
1796         }
1797
1798         /* don't forward releases */
1799
1800         return true;
1801 }
1802
1803 bool
1804 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
1805 {
1806         switch (ev->direction) {
1807         case GDK_SCROLL_LEFT:
1808                 scroll_left ();
1809                 return true;
1810         case GDK_SCROLL_UP:
1811                 if (ev->state & Keyboard::TertiaryModifier) {
1812                         scroll_left ();
1813                         return true;
1814                 }
1815                 return false;
1816
1817         case GDK_SCROLL_RIGHT:
1818                 scroll_right ();
1819                 return true;
1820
1821         case GDK_SCROLL_DOWN:
1822                 if (ev->state & Keyboard::TertiaryModifier) {
1823                         scroll_right ();
1824                         return true;
1825                 }
1826                 return false;
1827         }
1828
1829         return false;
1830 }
1831
1832
1833 void
1834 Mixer_UI::parameter_changed (string const & p)
1835 {
1836         if (p == "show-group-tabs") {
1837                 bool const s = _session->config.get_show_group_tabs ();
1838                 if (s) {
1839                         _group_tabs->show ();
1840                 } else {
1841                         _group_tabs->hide ();
1842                 }
1843         } else if (p == "default-narrow_ms") {
1844                 bool const s = ARDOUR_UI::config()->get_default_narrow_ms ();
1845                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1846                         (*i)->set_width_enum (s ? Narrow : Wide, this);
1847                 }
1848         } else if (p == "remote-model") {
1849                 reset_remote_control_ids ();
1850         }
1851 }
1852
1853 void
1854 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
1855 {
1856         g->set_active (a, this);
1857 }
1858
1859 PluginSelector*
1860 Mixer_UI::plugin_selector()
1861 {
1862 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
1863         if (!_plugin_selector)
1864                 _plugin_selector = new PluginSelector (PluginManager::instance());
1865 #endif
1866
1867         return _plugin_selector;
1868 }
1869
1870 void
1871 Mixer_UI::setup_track_display ()
1872 {
1873         track_model = ListStore::create (track_columns);
1874         track_display.set_model (track_model);
1875         track_display.append_column (_("Strips"), track_columns.text);
1876         track_display.append_column (_("Show"), track_columns.visible);
1877         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
1878         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
1879         track_display.get_column (0)->set_expand(true);
1880         track_display.get_column (1)->set_expand(false);
1881         track_display.get_column (0)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
1882         track_display.set_name (X_("EditGroupList"));
1883         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
1884         track_display.set_reorderable (true);
1885         track_display.set_headers_visible (true);
1886
1887         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
1888         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
1889
1890         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
1891         track_list_visible_cell->property_activatable() = true;
1892         track_list_visible_cell->property_radio() = false;
1893         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
1894
1895         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
1896
1897         track_display_scroller.add (track_display);
1898         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
1899
1900         VBox* v = manage (new VBox);
1901         v->show ();
1902         v->pack_start (track_display_scroller, true, true);
1903
1904         Button* b = manage (new Button);
1905         b->show ();
1906         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
1907         w->show ();
1908         b->add (*w);
1909
1910         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
1911
1912         v->pack_start (*b, false, false);
1913
1914         track_display_frame.set_name("BaseFrame");
1915         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
1916         track_display_frame.add (*v);
1917
1918         track_display_scroller.show();
1919         track_display_frame.show();
1920         track_display.show();
1921 }
1922
1923 void
1924 Mixer_UI::new_track_or_bus ()
1925 {
1926         ARDOUR_UI::instance()->add_route (this);
1927 }
1928
1929
1930 void
1931 Mixer_UI::update_title ()
1932 {
1933         if (_session) {
1934                 string n;
1935
1936                 if (_session->snap_name() != _session->name()) {
1937                         n = _session->snap_name ();
1938                 } else {
1939                         n = _session->name ();
1940                 }
1941
1942                 if (_session->dirty ()) {
1943                         n = "*" + n;
1944                 }
1945
1946                 WindowTitle title (n);
1947                 title += S_("Window|Mixer");
1948                 title += Glib::get_application_name ();
1949                 set_title (title.get_string());
1950
1951         } else {
1952
1953                 WindowTitle title (S_("Window|Mixer"));
1954                 title += Glib::get_application_name ();
1955                 set_title (title.get_string());
1956         }
1957 }
1958
1959 MixerStrip*
1960 Mixer_UI::strip_by_x (int x)
1961 {
1962         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1963                 int x1, x2, y;
1964
1965                 (*i)->translate_coordinates (*this, 0, 0, x1, y);
1966                 x2 = x1 + (*i)->get_width();
1967
1968                 if (x >= x1 && x <= x2) {
1969                         return (*i);
1970                 }
1971         }
1972
1973         return 0;
1974 }
1975
1976 void
1977 Mixer_UI::set_route_targets_for_operation ()
1978 {
1979         _route_targets.clear ();
1980
1981         if (!_selection.empty()) {
1982                 _route_targets = _selection.routes;
1983                 return;
1984         }
1985
1986 //  removed "implicit" selections of strips, after discussion on IRC
1987
1988 }
1989
1990 void
1991 Mixer_UI::monitor_section_going_away ()
1992 {
1993         if (_monitor_section) {
1994                 out_packer.remove (_monitor_section->tearoff());
1995                 _monitor_section->set_session (0);
1996         }
1997 }
1998
1999 void
2000 Mixer_UI::toggle_midi_input_active (bool flip_others)
2001 {
2002         boost::shared_ptr<RouteList> rl (new RouteList);
2003         bool onoff = false;
2004
2005         set_route_targets_for_operation ();
2006
2007         for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
2008                 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
2009
2010                 if (mt) {
2011                         rl->push_back ((*r)->route());
2012                         onoff = !mt->input_active();
2013                 }
2014         }
2015
2016         _session->set_exclusive_input_active (rl, onoff, flip_others);
2017 }
2018
2019 void
2020 Mixer_UI::maximise_mixer_space ()
2021 {
2022         if (_maximised) {
2023                 return;
2024         }
2025
2026         fullscreen ();
2027
2028         _maximised = true;
2029 }
2030
2031 void
2032 Mixer_UI::restore_mixer_space ()
2033 {
2034         if (!_maximised) {
2035                 return;
2036         }
2037
2038         unfullscreen();
2039
2040         _maximised = false;
2041 }