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 #include "ui_config.h"
  62
  63 #include "i18n.h"
  64
  65 using namespace ARDOUR;
  66 using namespace ARDOUR_UI_UTILS;
  67 using namespace PBD;
  68 using namespace Gtk;
  69 using namespace Glib;
  70 using namespace Gtkmm2ext;
  71 using namespace std;
  72
  73 using PBD::atoi;
  74 using PBD::Unwinder;
  75
  76 Mixer_UI* Mixer_UI::_instance = 0;
  77
  78 Mixer_UI*
  79 Mixer_UI::instance ()
  80 {
  81         if (!_instance) {
  82                 _instance  = new Mixer_UI;
  83         }
  84
  85         return _instance;
  86 }
  87
  88 Mixer_UI::Mixer_UI ()
  89         : Window (Gtk::WINDOW_TOPLEVEL)
  90         , VisibilityTracker (*((Gtk::Window*) this))
  91         , _visible (false)
  92         , no_track_list_redisplay (false)
  93         , in_group_row_change (false)
  94         , track_menu (0)
  95         , _monitor_section (0)
  96         , _plugin_selector (0)
  97         , _strip_width (UIConfiguration::instance().get_default_narrow_ms() ? Narrow : Wide)
  98         , ignore_reorder (false)
  99         , _in_group_rebuild_or_clear (false)
 100         , _route_deletion_in_progress (false)
 101         , _following_editor_selection (false)
 102         , _maximised (false)
 103 {
 104         /* allow this window to become the key focus window */
 105         set_flags (CAN_FOCUS);
 106
 107         Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_order_keys, this), gui_context());
 108
 109         scroller.set_can_default (true);
 110         set_default (scroller);
 111
 112         scroller_base.set_flags (Gtk::CAN_FOCUS);
 113         scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 114         scroller_base.set_name ("MixerWindow");
 115         scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 116         // add as last item of strip packer
 117         strip_packer.pack_end (scroller_base, true, true);
 118
 119         _group_tabs = new MixerGroupTabs (this);
 120         VBox* b = manage (new VBox);
 121         b->pack_start (*_group_tabs, PACK_SHRINK);
 122         b->pack_start (strip_packer);
 123         b->show_all ();
 124
 125         scroller.add (*b);
 126         scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 127
 128         setup_track_display ();
 129
 130         group_model = ListStore::create (group_columns);
 131         group_display.set_model (group_model);
 132         group_display.append_column (_("Group"), group_columns.text);
 133         group_display.append_column (_("Show"), group_columns.visible);
 134         group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
 135         group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
 136         group_display.get_column (0)->set_expand(true);
 137         group_display.get_column (1)->set_expand(false);
 138         group_display.set_name ("EditGroupList");
 139         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 140         group_display.set_reorderable (true);
 141         group_display.set_headers_visible (true);
 142         group_display.set_rules_hint (true);
 143         group_display.set_can_focus(false);
 144
 145         /* name is directly editable */
 146
 147         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
 148         name_cell->property_editable() = true;
 149         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 150
 151         /* use checkbox for the active column */
 152
 153         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (1));
 154         active_cell->property_activatable() = true;
 155         active_cell->property_radio() = false;
 156
 157         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 158         /* We use this to notice drag-and-drop reorders of the group list */
 159         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 160         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 161
 162         group_display_scroller.add (group_display);
 163         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 164
 165         HBox* route_group_display_button_box = manage (new HBox());
 166
 167         Button* route_group_add_button = manage (new Button ());
 168         Button* route_group_remove_button = manage (new Button ());
 169
 170         Widget* w;
 171
 172         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 173         w->show();
 174         route_group_add_button->add (*w);
 175
 176         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
 177         w->show();
 178         route_group_remove_button->add (*w);
 179
 180         route_group_display_button_box->set_homogeneous (true);
 181
 182         route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
 183         route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
 184
 185         route_group_display_button_box->add (*route_group_add_button);
 186         route_group_display_button_box->add (*route_group_remove_button);
 187
 188         group_display_vbox.pack_start (group_display_scroller, true, true);
 189         group_display_vbox.pack_start (*route_group_display_button_box, false, false);
 190
 191         group_display_frame.set_name ("BaseFrame");
 192         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 193         group_display_frame.add (group_display_vbox);
 194
 195         rhs_pane1.pack1 (track_display_frame);
 196         rhs_pane1.pack2 (group_display_frame);
 197
 198         list_vpacker.pack_start (rhs_pane1, true, true);
 199
 200         global_hpacker.pack_start (scroller, true, true);
 201 #ifdef GTKOSX
 202         /* current gtk-quartz has dirty updates on borders like this one */
 203         global_hpacker.pack_start (out_packer, false, false, 0);
 204 #else
 205         global_hpacker.pack_start (out_packer, false, false, 12);
 206 #endif
 207         list_hpane.pack1(list_vpacker, false, false);
 208         list_hpane.pack2(global_hpacker, true, false);
 209
 210         rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 211                                                         static_cast<Gtk::Paned*> (&rhs_pane1)));
 212         list_hpane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 213                                                          static_cast<Gtk::Paned*> (&list_hpane)));
 214
 215         global_vpacker.pack_start (list_hpane, true, true);
 216
 217         add (global_vpacker);
 218         set_name ("MixerWindow");
 219
 220         update_title ();
 221
 222         set_wmclass (X_("ardour_mixer"), PROGRAM_NAME);
 223
 224         signal_delete_event().connect (sigc::mem_fun (*this, &Mixer_UI::hide_window));
 225         add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
 226
 227         signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
 228
 229         route_group_display_button_box->show();
 230         route_group_add_button->show();
 231         route_group_remove_button->show();
 232
 233         global_hpacker.show();
 234         global_vpacker.show();
 235         scroller.show();
 236         scroller_base.show();
 237         scroller_hpacker.show();
 238         mixer_scroller_vpacker.show();
 239         list_vpacker.show();
 240         group_display_button_label.show();
 241         group_display_button.show();
 242         group_display_scroller.show();
 243         group_display_vbox.show();
 244         group_display_frame.show();
 245         rhs_pane1.show();
 246         strip_packer.show();
 247         out_packer.show();
 248         list_hpane.show();
 249         group_display.show();
 250
 251         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 252
 253 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 254         _plugin_selector = new PluginSelector (PluginManager::instance ());
 255 #endif
 256 }
 257
 258 Mixer_UI::~Mixer_UI ()
 259 {
 260         if (_monitor_section) {
 261                 delete _monitor_section;
 262         }
 263         delete _plugin_selector;
 264 }
 265
 266 void
 267 Mixer_UI::track_editor_selection ()
 268 {
 269         PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
 270 }
 271
 272
 273 void
 274 Mixer_UI::ensure_float (Window& win)
 275 {
 276         win.set_transient_for (*this);
 277 }
 278
 279 void
 280 Mixer_UI::show_window ()
 281 {
 282         present ();
 283         if (!_visible) {
 284                 set_window_pos_and_size ();
 285
 286                 /* show/hide group tabs as required */
 287                 parameter_changed ("show-group-tabs");
 288
 289                 /* now reset each strips width so the right widgets are shown */
 290                 MixerStrip* ms;
 291
 292                 TreeModel::Children rows = track_model->children();
 293                 TreeModel::Children::iterator ri;
 294
 295                 for (ri = rows.begin(); ri != rows.end(); ++ri) {
 296                         ms = (*ri)[track_columns.strip];
 297                         ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 298                         /* Fix visibility of mixer strip stuff */
 299                         ms->parameter_changed (X_("mixer-element-visibility"));
 300                 }
 301         }
 302
 303         /* force focus into main area */
 304         scroller_base.grab_focus ();
 305
 306         _visible = true;
 307 }
 308
 309 bool
 310 Mixer_UI::hide_window (GdkEventAny *ev)
 311 {
 312         get_window_pos_and_size ();
 313
 314         _visible = false;
 315         return just_hide_it(ev, static_cast<Gtk::Window *>(this));
 316 }
 317
 318
 319 void
 320 Mixer_UI::add_strips (RouteList& routes)
 321 {
 322         bool from_scratch = track_model->children().size() == 0;
 323         Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 324
 325         for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
 326                 boost::shared_ptr<Route> r = (*it)[track_columns.route];
 327
 328                 if (r->order_key() == (routes.front()->order_key() + routes.size())) {
 329                         insert_iter = it;
 330                         break;
 331                 }
 332         }
 333
 334         if(!from_scratch) {
 335                 _selection.clear_routes ();
 336         }
 337
 338         MixerStrip* strip;
 339
 340         try {
 341                 no_track_list_redisplay = true;
 342                 track_display.set_model (Glib::RefPtr<ListStore>());
 343
 344                 for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
 345                         boost::shared_ptr<Route> route = (*x);
 346
 347                         if (route->is_auditioner()) {
 348                                 continue;
 349                         }
 350
 351                         if (route->is_monitor()) {
 352
 353                                 if (!_monitor_section) {
 354                                         _monitor_section = new MonitorSection (_session);
 355
 356                                         XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 357                                         if (mnode) {
 358                                                 _monitor_section->tearoff().set_state (*mnode);
 359                                         }
 360                                 }
 361
 362                                 out_packer.pack_end (_monitor_section->tearoff(), false, false);
 363                                 _monitor_section->set_session (_session);
 364                                 _monitor_section->tearoff().show_all ();
 365
 366                                 route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 367
 368                                 /* no regular strip shown for control out */
 369
 370                                 continue;
 371                         }
 372
 373                         strip = new MixerStrip (*this, _session, route);
 374                         strips.push_back (strip);
 375
 376                         UIConfiguration::instance().get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 377
 378                         if (strip->width_owner() != strip) {
 379                                 strip->set_width_enum (_strip_width, this);
 380                         }
 381
 382                         show_strip (strip);
 383
 384                         TreeModel::Row row = *(track_model->insert(insert_iter));
 385                         row[track_columns.text] = route->name();
 386                         row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
 387                         row[track_columns.route] = route;
 388                         row[track_columns.strip] = strip;
 389
 390                         if (!from_scratch) {
 391                                 _selection.add (strip);
 392                         }
 393
 394                         route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
 395
 396                         strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 397                         strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 398                 }
 399
 400         } catch (...) {
 401         }
 402
 403         no_track_list_redisplay = false;
 404         track_display.set_model (track_model);
 405
 406         sync_order_keys_from_treeview ();
 407         redisplay_track_list ();
 408 }
 409
 410 void
 411 Mixer_UI::deselect_all_strip_processors ()
 412 {
 413         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 414                 (*i)->deselect_all_processors();
 415         }
 416 }
 417
 418 void
 419 Mixer_UI::select_none ()
 420 {
 421         _selection.clear_routes();
 422         deselect_all_strip_processors();
 423 }
 424
 425 void
 426 Mixer_UI::delete_processors ()
 427 {
 428         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 429                 (*i)->delete_processors();
 430         }
 431 }
 432
 433
 434 void
 435 Mixer_UI::remove_strip (MixerStrip* strip)
 436 {
 437         if (_session && _session->deletion_in_progress()) {
 438                 /* its all being taken care of */
 439                 return;
 440         }
 441
 442         TreeModel::Children rows = track_model->children();
 443         TreeModel::Children::iterator ri;
 444         list<MixerStrip *>::iterator i;
 445
 446         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 447                 strips.erase (i);
 448         }
 449
 450         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 451                 if ((*ri)[track_columns.strip] == strip) {
 452                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 453                         track_model->erase (ri);
 454                         break;
 455                 }
 456         }
 457 }
 458
 459 void
 460 Mixer_UI::reset_remote_control_ids ()
 461 {
 462         if (Config->get_remote_model() == UserOrdered || !_session || _session->deletion_in_progress()) {
 463                 return;
 464         }
 465
 466         TreeModel::Children rows = track_model->children();
 467
 468         if (rows.empty()) {
 469                 return;
 470         }
 471
 472         DEBUG_TRACE (DEBUG::OrderKeys, "mixer resets remote control ids after remote model change\n");
 473
 474         TreeModel::Children::iterator ri;
 475         bool rid_change = false;
 476         uint32_t rid = 1;
 477         uint32_t invisible_key = UINT32_MAX;
 478
 479         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 480
 481                 /* skip two special values */
 482
 483                 if (rid == Route::MasterBusRemoteControlID) {
 484                         rid++;
 485                 }
 486
 487                 if (rid == Route::MonitorBusRemoteControlID) {
 488                         rid++;
 489                 }
 490
 491                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 492                 bool visible = (*ri)[track_columns.visible];
 493
 494                 if (!route->is_master() && !route->is_monitor()) {
 495
 496                         uint32_t new_rid = (visible ? rid : invisible_key--);
 497
 498                         if (new_rid != route->remote_control_id()) {
 499                                 route->set_remote_control_id_explicit (new_rid);
 500                                 rid_change = true;
 501                         }
 502
 503                         if (visible) {
 504                                 rid++;
 505                         }
 506                 }
 507         }
 508
 509         if (rid_change) {
 510                 /* tell the world that we changed the remote control IDs */
 511                 _session->notify_remote_id_change ();
 512         }
 513 }
 514
 515 void
 516 Mixer_UI::sync_order_keys_from_treeview ()
 517 {
 518         if (ignore_reorder || !_session || _session->deletion_in_progress()) {
 519                 return;
 520         }
 521
 522         TreeModel::Children rows = track_model->children();
 523
 524         if (rows.empty()) {
 525                 return;
 526         }
 527
 528         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
 529
 530         TreeModel::Children::iterator ri;
 531         bool changed = false;
 532         bool rid_change = false;
 533         uint32_t order = 0;
 534         uint32_t rid = 1;
 535         uint32_t invisible_key = UINT32_MAX;
 536
 537         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 538                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 539                 bool visible = (*ri)[track_columns.visible];
 540
 541                 uint32_t old_key = route->order_key ();
 542
 543                 if (order != old_key) {
 544                         route->set_order_key (order);
 545                         changed = true;
 546                 }
 547
 548                 if ((Config->get_remote_model() == MixerOrdered) && !route->is_master() && !route->is_monitor()) {
 549
 550                         uint32_t new_rid = (visible ? rid : invisible_key--);
 551
 552                         if (new_rid != route->remote_control_id()) {
 553                                 route->set_remote_control_id_explicit (new_rid);
 554                                 rid_change = true;
 555                         }
 556
 557                         if (visible) {
 558                                 rid++;
 559                         }
 560
 561                 }
 562
 563                 ++order;
 564         }
 565
 566         if (changed) {
 567                 /* tell everyone that we changed the mixer sort keys */
 568                 _session->sync_order_keys ();
 569         }
 570
 571         if (rid_change) {
 572                 /* tell the world that we changed the remote control IDs */
 573                 _session->notify_remote_id_change ();
 574         }
 575 }
 576
 577 void
 578 Mixer_UI::sync_treeview_from_order_keys ()
 579 {
 580         if (!_session || _session->deletion_in_progress()) {
 581                 return;
 582         }
 583
 584         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from order keys.\n");
 585
 586         /* we could get here after either a change in the Mixer or Editor sort
 587          * order, but either way, the mixer order keys reflect the intended
 588          * order for the GUI, so reorder the treeview model to match it.
 589          */
 590
 591         vector<int> neworder;
 592         TreeModel::Children rows = track_model->children();
 593         uint32_t old_order = 0;
 594         bool changed = false;
 595
 596         if (rows.empty()) {
 597                 return;
 598         }
 599
 600         OrderKeySortedRoutes sorted_routes;
 601
 602         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 603                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 604                 sorted_routes.push_back (RoutePlusOrderKey (route, old_order, route->order_key ()));
 605         }
 606
 607         SortByNewDisplayOrder cmp;
 608
 609         sort (sorted_routes.begin(), sorted_routes.end(), cmp);
 610         neworder.assign (sorted_routes.size(), 0);
 611
 612         uint32_t n = 0;
 613
 614         for (OrderKeySortedRoutes::iterator sr = sorted_routes.begin(); sr != sorted_routes.end(); ++sr, ++n) {
 615
 616                 neworder[n] = sr->old_display_order;
 617
 618                 if (sr->old_display_order != n) {
 619                         changed = true;
 620                 }
 621
 622                 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order for %1 from %2 to %3\n",
 623                                                                sr->route->name(), sr->old_display_order, n));
 624         }
 625
 626         if (changed) {
 627                 Unwinder<bool> uw (ignore_reorder, true);
 628                 track_model->reorder (neworder);
 629         }
 630
 631         redisplay_track_list ();
 632 }
 633
 634 void
 635 Mixer_UI::follow_editor_selection ()
 636 {
 637         if (_following_editor_selection) {
 638                 return;
 639         }
 640
 641         _following_editor_selection = true;
 642         _selection.block_routes_changed (true);
 643
 644         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 645
 646         _selection.clear_routes ();
 647
 648         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 649                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
 650                 if (rtav) {
 651                         MixerStrip* ms = strip_by_route (rtav->route());
 652                         if (ms) {
 653                                 _selection.add (ms);
 654                         }
 655                 }
 656         }
 657
 658         _following_editor_selection = false;
 659         _selection.block_routes_changed (false);
 660 }
 661
 662
 663 MixerStrip*
 664 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 665 {
 666         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 667                 if ((*i)->route() == r) {
 668                         return (*i);
 669                 }
 670         }
 671
 672         return 0;
 673 }
 674
 675 bool
 676 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 677 {
 678         if (ev->button == 1) {
 679                 if (_selection.selected (strip)) {
 680                         /* primary-click: toggle selection state of strip */
 681                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 682                                 _selection.remove (strip);
 683                         } else if (_selection.routes.size() > 1) {
 684                                 /* de-select others */
 685                                 _selection.set (strip);
 686                         }
 687                 } else {
 688                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 689                                 _selection.add (strip);
 690                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 691
 692                                 if (!_selection.selected(strip)) {
 693
 694                                         /* extend selection */
 695
 696                                         vector<MixerStrip*> tmp;
 697                                         bool accumulate = false;
 698                                         bool found_another = false;
 699
 700                                         tmp.push_back (strip);
 701
 702                                         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 703                                                 if ((*i) == strip) {
 704                                                         /* hit clicked strip, start accumulating till we hit the first
 705                                                            selected strip
 706                                                         */
 707                                                         if (accumulate) {
 708                                                                 /* done */
 709                                                                 break;
 710                                                         } else {
 711                                                                 accumulate = true;
 712                                                         }
 713                                                 } else if (_selection.selected (*i)) {
 714                                                         /* hit selected strip. if currently accumulating others,
 715                                                            we're done. if not accumulating others, start doing so.
 716                                                         */
 717                                                         found_another = true;
 718                                                         if (accumulate) {
 719                                                                 /* done */
 720                                                                 break;
 721                                                         } else {
 722                                                                 accumulate = true;
 723                                                         }
 724                                                 } else {
 725                                                         if (accumulate) {
 726                                                                 tmp.push_back (*i);
 727                                                         }
 728                                                 }
 729                                         }
 730
 731                                         if (found_another) {
 732                                                 for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 733                                                         _selection.add (*i);
 734                                                 }
 735                                         } else
 736                                                 _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
 737                                 }
 738
 739                         } else {
 740                                 _selection.set (strip);
 741                         }
 742                 }
 743         }
 744
 745         return true;
 746 }
 747
 748 void
 749 Mixer_UI::set_session (Session* sess)
 750 {
 751         SessionHandlePtr::set_session (sess);
 752
 753         if (_plugin_selector) {
 754                 _plugin_selector->set_session (_session);
 755         }
 756
 757         _group_tabs->set_session (sess);
 758
 759         if (!_session) {
 760                 return;
 761         }
 762
 763         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 764         set_state (*node);
 765
 766         update_title ();
 767
 768         initial_track_display ();
 769
 770         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
 771         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 772         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 773         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 774         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 775         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 776         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 777
 778         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 779
 780         route_groups_changed ();
 781
 782         if (_visible) {
 783                 show_window();
 784         }
 785
 786         start_updating ();
 787 }
 788
 789 void
 790 Mixer_UI::session_going_away ()
 791 {
 792         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 793
 794         _in_group_rebuild_or_clear = true;
 795         group_model->clear ();
 796         _in_group_rebuild_or_clear = false;
 797
 798         _selection.clear ();
 799         track_model->clear ();
 800
 801         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 802                 delete (*i);
 803         }
 804
 805         if (_monitor_section) {
 806                 _monitor_section->tearoff().hide_visible ();
 807         }
 808
 809         strips.clear ();
 810
 811         stop_updating ();
 812
 813         SessionHandlePtr::session_going_away ();
 814
 815         _session = 0;
 816         update_title ();
 817 }
 818
 819 void
 820 Mixer_UI::track_visibility_changed (std::string const & path)
 821 {
 822         if (_session && _session->deletion_in_progress()) {
 823                 return;
 824         }
 825
 826         TreeIter iter;
 827
 828         if ((iter = track_model->get_iter (path))) {
 829                 MixerStrip* strip = (*iter)[track_columns.strip];
 830                 if (strip) {
 831                         bool visible = (*iter)[track_columns.visible];
 832
 833                         if (strip->set_marked_for_display (!visible)) {
 834                                 update_track_visibility ();
 835                         }
 836                 }
 837         }
 838 }
 839
 840 void
 841 Mixer_UI::update_track_visibility ()
 842 {
 843         TreeModel::Children rows = track_model->children();
 844         TreeModel::Children::iterator i;
 845
 846         {
 847                 Unwinder<bool> uw (no_track_list_redisplay, true);
 848
 849                 for (i = rows.begin(); i != rows.end(); ++i) {
 850                         MixerStrip *strip = (*i)[track_columns.strip];
 851                         (*i)[track_columns.visible] = strip->marked_for_display ();
 852                 }
 853
 854                 /* force route order keys catch up with visibility changes
 855                  */
 856
 857                 sync_order_keys_from_treeview ();
 858         }
 859
 860         redisplay_track_list ();
 861 }
 862
 863 void
 864 Mixer_UI::show_strip (MixerStrip* ms)
 865 {
 866         TreeModel::Children rows = track_model->children();
 867         TreeModel::Children::iterator i;
 868
 869         for (i = rows.begin(); i != rows.end(); ++i) {
 870
 871                 MixerStrip* strip = (*i)[track_columns.strip];
 872                 if (strip == ms) {
 873                         (*i)[track_columns.visible] = true;
 874                         redisplay_track_list ();
 875                         break;
 876                 }
 877         }
 878 }
 879
 880 void
 881 Mixer_UI::hide_strip (MixerStrip* ms)
 882 {
 883         TreeModel::Children rows = track_model->children();
 884         TreeModel::Children::iterator i;
 885
 886         for (i = rows.begin(); i != rows.end(); ++i) {
 887
 888                 MixerStrip* strip = (*i)[track_columns.strip];
 889                 if (strip == ms) {
 890                         (*i)[track_columns.visible] = false;
 891                         redisplay_track_list ();
 892                         break;
 893                 }
 894         }
 895 }
 896
 897 gint
 898 Mixer_UI::start_updating ()
 899 {
 900     fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
 901     return 0;
 902 }
 903
 904 gint
 905 Mixer_UI::stop_updating ()
 906 {
 907     fast_screen_update_connection.disconnect();
 908     return 0;
 909 }
 910
 911 void
 912 Mixer_UI::fast_update_strips ()
 913 {
 914         if (is_mapped () && _session) {
 915                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 916                         (*i)->fast_update ();
 917                 }
 918         }
 919 }
 920
 921 void
 922 Mixer_UI::set_all_strips_visibility (bool yn)
 923 {
 924         TreeModel::Children rows = track_model->children();
 925         TreeModel::Children::iterator i;
 926
 927         {
 928                 Unwinder<bool> uw (no_track_list_redisplay, true);
 929
 930                 for (i = rows.begin(); i != rows.end(); ++i) {
 931
 932                         TreeModel::Row row = (*i);
 933                         MixerStrip* strip = row[track_columns.strip];
 934
 935                         if (strip == 0) {
 936                                 continue;
 937                         }
 938
 939                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 940                                 continue;
 941                         }
 942
 943                         (*i)[track_columns.visible] = yn;
 944                 }
 945         }
 946
 947         redisplay_track_list ();
 948 }
 949
 950
 951 void
 952 Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
 953 {
 954         TreeModel::Children rows = track_model->children();
 955         TreeModel::Children::iterator i;
 956
 957         {
 958                 Unwinder<bool> uw (no_track_list_redisplay, true);
 959
 960                 for (i = rows.begin(); i != rows.end(); ++i) {
 961                         TreeModel::Row row = (*i);
 962                         MixerStrip* strip = row[track_columns.strip];
 963
 964                         if (strip == 0) {
 965                                 continue;
 966                         }
 967
 968                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 969                                 continue;
 970                         }
 971
 972                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
 973                         boost::shared_ptr<MidiTrack> mt = strip->midi_track();
 974
 975                         switch (tracks) {
 976                         case 0:
 977                                 (*i)[track_columns.visible] = yn;
 978                                 break;
 979
 980                         case 1:
 981                                 if (at) { /* track */
 982                                         (*i)[track_columns.visible] = yn;
 983                                 }
 984                                 break;
 985
 986                         case 2:
 987                                 if (!at && !mt) { /* bus */
 988                                         (*i)[track_columns.visible] = yn;
 989                                 }
 990                                 break;
 991
 992                         case 3:
 993                                 if (mt) { /* midi-track */
 994                                         (*i)[track_columns.visible] = yn;
 995                                 }
 996                                 break;
 997                         }
 998                 }
 999         }
1000
1001         redisplay_track_list ();
1002 }
1003
1004 void
1005 Mixer_UI::hide_all_routes ()
1006 {
1007         set_all_strips_visibility (false);
1008 }
1009
1010 void
1011 Mixer_UI::show_all_routes ()
1012 {
1013         set_all_strips_visibility (true);
1014 }
1015
1016 void
1017 Mixer_UI::show_all_audiobus ()
1018 {
1019         set_all_audio_midi_visibility (2, true);
1020 }
1021 void
1022 Mixer_UI::hide_all_audiobus ()
1023 {
1024         set_all_audio_midi_visibility (2, false);
1025 }
1026
1027 void
1028 Mixer_UI::show_all_audiotracks()
1029 {
1030         set_all_audio_midi_visibility (1, true);
1031 }
1032 void
1033 Mixer_UI::hide_all_audiotracks ()
1034 {
1035         set_all_audio_midi_visibility (1, false);
1036 }
1037
1038 void
1039 Mixer_UI::show_all_miditracks()
1040 {
1041         set_all_audio_midi_visibility (3, true);
1042 }
1043 void
1044 Mixer_UI::hide_all_miditracks ()
1045 {
1046         set_all_audio_midi_visibility (3, false);
1047 }
1048
1049
1050 void
1051 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1052 {
1053         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1054         sync_order_keys_from_treeview ();
1055 }
1056
1057 void
1058 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1059 {
1060         /* this happens as the second step of a DnD within the treeview as well
1061            as when a row/route is actually deleted.
1062
1063            if it was a deletion then we have to force a redisplay because
1064            order keys may not have changed.
1065         */
1066
1067         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1068         sync_order_keys_from_treeview ();
1069
1070         if (_route_deletion_in_progress) {
1071                 redisplay_track_list ();
1072         }
1073 }
1074
1075 void
1076 Mixer_UI::redisplay_track_list ()
1077 {
1078         TreeModel::Children rows = track_model->children();
1079         TreeModel::Children::iterator i;
1080
1081         if (no_track_list_redisplay) {
1082                 return;
1083         }
1084
1085         for (i = rows.begin(); i != rows.end(); ++i) {
1086
1087                 MixerStrip* strip = (*i)[track_columns.strip];
1088
1089                 if (strip == 0) {
1090                         /* we're in the middle of changing a row, don't worry */
1091                         continue;
1092                 }
1093
1094                 bool const visible = (*i)[track_columns.visible];
1095
1096                 if (visible) {
1097                         strip->set_gui_property ("visible", true);
1098
1099                         if (strip->packed()) {
1100
1101                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1102                                         out_packer.reorder_child (*strip, -1);
1103
1104                                 } else {
1105                                         strip_packer.reorder_child (*strip, -1); /* put at end */
1106                                 }
1107
1108                         } else {
1109
1110                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1111                                         out_packer.pack_start (*strip, false, false);
1112                                 } else {
1113                                         strip_packer.pack_start (*strip, false, false);
1114                                 }
1115                                 strip->set_packed (true);
1116                         }
1117
1118                 } else {
1119
1120                         strip->set_gui_property ("visible", false);
1121
1122                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1123                                 /* do nothing, these cannot be hidden */
1124                         } else {
1125                                 if (strip->packed()) {
1126                                         strip_packer.remove (*strip);
1127                                         strip->set_packed (false);
1128                                 }
1129                         }
1130                 }
1131         }
1132
1133         _group_tabs->set_dirty ();
1134 }
1135
1136 void
1137 Mixer_UI::strip_width_changed ()
1138 {
1139         _group_tabs->set_dirty ();
1140
1141 #ifdef GTKOSX
1142         TreeModel::Children rows = track_model->children();
1143         TreeModel::Children::iterator i;
1144         long order;
1145
1146         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1147                 MixerStrip* strip = (*i)[track_columns.strip];
1148
1149                 if (strip == 0) {
1150                         continue;
1151                 }
1152
1153                 bool visible = (*i)[track_columns.visible];
1154
1155                 if (visible) {
1156                         strip->queue_draw();
1157                 }
1158         }
1159 #endif
1160
1161 }
1162
1163 void
1164 Mixer_UI::initial_track_display ()
1165 {
1166         boost::shared_ptr<RouteList> routes = _session->get_routes();
1167         RouteList copy (*routes);
1168         ARDOUR::SignalOrderRouteSorter sorter;
1169
1170         copy.sort (sorter);
1171
1172         {
1173                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1174                 Unwinder<bool> uw2 (ignore_reorder, true);
1175
1176                 track_model->clear ();
1177                 add_strips (copy);
1178         }
1179
1180         _session->sync_order_keys ();
1181
1182         redisplay_track_list ();
1183 }
1184
1185 void
1186 Mixer_UI::show_track_list_menu ()
1187 {
1188         if (track_menu == 0) {
1189                 build_track_menu ();
1190         }
1191
1192         track_menu->popup (1, gtk_get_current_event_time());
1193 }
1194
1195 bool
1196 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1197 {
1198         if (Keyboard::is_context_menu_event (ev)) {
1199                 show_track_list_menu ();
1200                 return true;
1201         }
1202
1203         return false;
1204 }
1205
1206 void
1207 Mixer_UI::build_track_menu ()
1208 {
1209         using namespace Menu_Helpers;
1210         using namespace Gtk;
1211
1212         track_menu = new Menu;
1213         track_menu->set_name ("ArdourContextMenu");
1214         MenuList& items = track_menu->items();
1215
1216         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1217         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1218         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1219         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1220         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1221         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1222         items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
1223         items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
1224
1225 }
1226
1227 void
1228 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1229 {
1230         if (!what_changed.contains (ARDOUR::Properties::name)) {
1231                 return;
1232         }
1233
1234         ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1235
1236         TreeModel::Children rows = track_model->children();
1237         TreeModel::Children::iterator i;
1238
1239         for (i = rows.begin(); i != rows.end(); ++i) {
1240                 if ((*i)[track_columns.strip] == mx) {
1241                         (*i)[track_columns.text] = mx->route()->name();
1242                         return;
1243                 }
1244         }
1245
1246         error << _("track display list item for renamed strip not found!") << endmsg;
1247 }
1248
1249 bool
1250 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1251 {
1252         TreeModel::Path path;
1253         TreeViewColumn* column;
1254         int cellx;
1255         int celly;
1256
1257         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1258                 _group_tabs->get_menu(0)->popup (1, ev->time);
1259                 return true;
1260         }
1261
1262         TreeIter iter = group_model->get_iter (path);
1263         if (!iter) {
1264                 _group_tabs->get_menu(0)->popup (1, ev->time);
1265                 return true;
1266         }
1267
1268         RouteGroup* group = (*iter)[group_columns.group];
1269
1270         if (Keyboard::is_context_menu_event (ev)) {
1271                 _group_tabs->get_menu(group)->popup (1, ev->time);
1272                 return true;
1273         }
1274
1275         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1276         case 0:
1277                 if (Keyboard::is_edit_event (ev)) {
1278                         if (group) {
1279                                 // edit_route_group (group);
1280 #ifdef GTKOSX
1281                                 group_display.queue_draw();
1282 #endif
1283                                 return true;
1284                         }
1285                 }
1286                 break;
1287
1288         case 1:
1289         {
1290                 bool visible = (*iter)[group_columns.visible];
1291                 (*iter)[group_columns.visible] = !visible;
1292 #ifdef GTKOSX
1293                 group_display.queue_draw();
1294 #endif
1295                 return true;
1296         }
1297
1298         default:
1299                 break;
1300         }
1301
1302         return false;
1303  }
1304
1305 void
1306 Mixer_UI::activate_all_route_groups ()
1307 {
1308         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1309 }
1310
1311 void
1312 Mixer_UI::disable_all_route_groups ()
1313 {
1314         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1315 }
1316
1317 void
1318 Mixer_UI::route_groups_changed ()
1319 {
1320         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1321
1322         _in_group_rebuild_or_clear = true;
1323
1324         /* just rebuild the while thing */
1325
1326         group_model->clear ();
1327
1328 #if 0
1329         /* this is currently not used,
1330          * Mixer_UI::group_display_button_press() has a case for it,
1331          * and a commented edit_route_group() but that's n/a since 2011.
1332          *
1333          * This code is left as reminder that
1334          * row[group_columns.group] = 0 has special meaning.
1335          */
1336         {
1337                 TreeModel::Row row;
1338                 row = *(group_model->append());
1339                 row[group_columns.visible] = true;
1340                 row[group_columns.text] = (_("-all-"));
1341                 row[group_columns.group] = 0;
1342         }
1343 #endif
1344
1345         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1346
1347         _group_tabs->set_dirty ();
1348         _in_group_rebuild_or_clear = false;
1349 }
1350
1351 void
1352 Mixer_UI::new_route_group ()
1353 {
1354         RouteList rl;
1355
1356         _group_tabs->run_new_group_dialog (rl);
1357 }
1358
1359 void
1360 Mixer_UI::remove_selected_route_group ()
1361 {
1362         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1363         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1364
1365         if (rows.empty()) {
1366                 return;
1367         }
1368
1369         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1370         TreeIter iter;
1371
1372         /* selection mode is single, so rows.begin() is it */
1373
1374         if ((iter = group_model->get_iter (*i))) {
1375
1376                 RouteGroup* rg = (*iter)[group_columns.group];
1377
1378                 if (rg) {
1379                         _session->remove_route_group (*rg);
1380                 }
1381         }
1382 }
1383
1384 void
1385 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1386 {
1387         if (in_group_row_change) {
1388                 return;
1389         }
1390
1391         /* force an update of any mixer strips that are using this group,
1392            otherwise mix group names don't change in mixer strips
1393         */
1394
1395         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1396                 if ((*i)->route_group() == group) {
1397                         (*i)->route_group_changed();
1398                 }
1399         }
1400
1401         TreeModel::iterator i;
1402         TreeModel::Children rows = group_model->children();
1403         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1404
1405         in_group_row_change = true;
1406
1407         for (i = rows.begin(); i != rows.end(); ++i) {
1408                 if ((*i)[group_columns.group] == group) {
1409                         (*i)[group_columns.visible] = !group->is_hidden ();
1410                         (*i)[group_columns.text] = group->name ();
1411                         break;
1412                 }
1413         }
1414
1415         in_group_row_change = false;
1416
1417         if (change.contains (Properties::name)) {
1418                 _group_tabs->set_dirty ();
1419         }
1420
1421         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1422                 if ((*j)->route_group() == group) {
1423                         if (group->is_hidden ()) {
1424                                 hide_strip (*j);
1425                         } else {
1426                                 show_strip (*j);
1427                         }
1428                 }
1429         }
1430 }
1431
1432 void
1433 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1434 {
1435         RouteGroup* group;
1436         TreeIter iter;
1437
1438         if ((iter = group_model->get_iter (path))) {
1439
1440                 if ((group = (*iter)[group_columns.group]) == 0) {
1441                         return;
1442                 }
1443
1444                 if (new_text != group->name()) {
1445                         group->set_name (new_text);
1446                 }
1447         }
1448 }
1449
1450 void
1451 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1452 {
1453         RouteGroup* group;
1454
1455         if (in_group_row_change) {
1456                 return;
1457         }
1458
1459         if ((group = (*iter)[group_columns.group]) == 0) {
1460                 return;
1461         }
1462
1463         std::string name = (*iter)[group_columns.text];
1464
1465         if (name != group->name()) {
1466                 group->set_name (name);
1467         }
1468
1469         bool hidden = !(*iter)[group_columns.visible];
1470
1471         if (hidden != group->is_hidden ()) {
1472                 group->set_hidden (hidden, this);
1473         }
1474 }
1475
1476 /** Called when a group model row is deleted, but also when the model is
1477  *  reordered by a user drag-and-drop; the latter is what we are
1478  *  interested in here.
1479  */
1480 void
1481 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1482 {
1483         if (_in_group_rebuild_or_clear) {
1484                 return;
1485         }
1486
1487         /* Re-write the session's route group list so that the new order is preserved */
1488
1489         list<RouteGroup*> new_list;
1490
1491         Gtk::TreeModel::Children children = group_model->children();
1492         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1493                 RouteGroup* g = (*i)[group_columns.group];
1494                 if (g) {
1495                         new_list.push_back (g);
1496                 }
1497         }
1498
1499         _session->reorder_route_groups (new_list);
1500 }
1501
1502
1503 void
1504 Mixer_UI::add_route_group (RouteGroup* group)
1505 {
1506         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1507         bool focus = false;
1508
1509         in_group_row_change = true;
1510
1511         TreeModel::Row row = *(group_model->append());
1512         row[group_columns.visible] = !group->is_hidden ();
1513         row[group_columns.group] = group;
1514         if (!group->name().empty()) {
1515                 row[group_columns.text] = group->name();
1516         } else {
1517                 row[group_columns.text] = _("unnamed");
1518                 focus = true;
1519         }
1520
1521         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1522
1523         if (focus) {
1524                 TreeViewColumn* col = group_display.get_column (0);
1525                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1526                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1527         }
1528
1529         _group_tabs->set_dirty ();
1530
1531         in_group_row_change = false;
1532 }
1533
1534 bool
1535 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1536 {
1537         using namespace Menu_Helpers;
1538
1539         if (Keyboard::is_context_menu_event (ev)) {
1540                 ARDOUR_UI::instance()->add_route (this);
1541                 return true;
1542         }
1543
1544         return false;
1545 }
1546
1547 void
1548 Mixer_UI::set_strip_width (Width w, bool save)
1549 {
1550         _strip_width = w;
1551
1552         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1553                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1554         }
1555 }
1556
1557 void
1558 Mixer_UI::set_window_pos_and_size ()
1559 {
1560         resize (m_width, m_height);
1561         move (m_root_x, m_root_y);
1562 }
1563
1564         void
1565 Mixer_UI::get_window_pos_and_size ()
1566 {
1567         get_position(m_root_x, m_root_y);
1568         get_size(m_width, m_height);
1569 }
1570
1571 int
1572 Mixer_UI::set_state (const XMLNode& node)
1573 {
1574         const XMLProperty* prop;
1575         XMLNode* geometry;
1576
1577         m_width = default_width;
1578         m_height = default_height;
1579         m_root_x = 1;
1580         m_root_y = 1;
1581
1582         if ((geometry = find_named_node (node, "geometry")) != 0) {
1583
1584                 XMLProperty* prop;
1585
1586                 if ((prop = geometry->property("x_size")) == 0) {
1587                         prop = geometry->property ("x-size");
1588                 }
1589                 if (prop) {
1590                         m_width = atoi(prop->value());
1591                 }
1592                 if ((prop = geometry->property("y_size")) == 0) {
1593                         prop = geometry->property ("y-size");
1594                 }
1595                 if (prop) {
1596                         m_height = atoi(prop->value());
1597                 }
1598
1599                 if ((prop = geometry->property ("x_pos")) == 0) {
1600                         prop = geometry->property ("x-pos");
1601                 }
1602                 if (prop) {
1603                         m_root_x = atoi (prop->value());
1604
1605                 }
1606                 if ((prop = geometry->property ("y_pos")) == 0) {
1607                         prop = geometry->property ("y-pos");
1608                 }
1609                 if (prop) {
1610                         m_root_y = atoi (prop->value());
1611                 }
1612         }
1613
1614         set_window_pos_and_size ();
1615
1616         if ((prop = node.property ("narrow-strips"))) {
1617                 if (string_is_affirmative (prop->value())) {
1618                         set_strip_width (Narrow);
1619                 } else {
1620                         set_strip_width (Wide);
1621                 }
1622         }
1623
1624         if ((prop = node.property ("show-mixer"))) {
1625                 if (string_is_affirmative (prop->value())) {
1626                        _visible = true;
1627                 }
1628         }
1629
1630         if ((prop = node.property ("maximised"))) {
1631                 bool yn = string_is_affirmative (prop->value());
1632                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1633                 assert (act);
1634                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1635                 bool fs = tact && tact->get_active();
1636                 if (yn ^ fs) {
1637                         ActionManager::do_action ("Common",
1638                                         "ToggleMaximalMixer");
1639                 }
1640         }
1641
1642
1643         return 0;
1644 }
1645
1646 XMLNode&
1647 Mixer_UI::get_state (void)
1648 {
1649         XMLNode* node = new XMLNode ("Mixer");
1650
1651         if (is_realized()) {
1652                 Glib::RefPtr<Gdk::Window> win = get_window();
1653
1654                 get_window_pos_and_size ();
1655
1656                 XMLNode* geometry = new XMLNode ("geometry");
1657                 char buf[32];
1658                 snprintf(buf, sizeof(buf), "%d", m_width);
1659                 geometry->add_property(X_("x_size"), string(buf));
1660                 snprintf(buf, sizeof(buf), "%d", m_height);
1661                 geometry->add_property(X_("y_size"), string(buf));
1662                 snprintf(buf, sizeof(buf), "%d", m_root_x);
1663                 geometry->add_property(X_("x_pos"), string(buf));
1664                 snprintf(buf, sizeof(buf), "%d", m_root_y);
1665                 geometry->add_property(X_("y_pos"), string(buf));
1666
1667                 // written only for compatibility, they are not used.
1668                 snprintf(buf, sizeof(buf), "%d", 0);
1669                 geometry->add_property(X_("x_off"), string(buf));
1670                 snprintf(buf, sizeof(buf), "%d", 0);
1671                 geometry->add_property(X_("y_off"), string(buf));
1672
1673                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&rhs_pane1)->gobj()));
1674                 geometry->add_property(X_("mixer_rhs_pane1_pos"), string(buf));
1675                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&list_hpane)->gobj()));
1676                 geometry->add_property(X_("mixer_list_hpane_pos"), string(buf));
1677
1678                 node->add_child_nocopy (*geometry);
1679         }
1680
1681         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1682
1683         node->add_property ("show-mixer", _visible ? "yes" : "no");
1684
1685         node->add_property ("maximised", _maximised ? "yes" : "no");
1686
1687         return *node;
1688 }
1689
1690
1691 void
1692 Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
1693 {
1694         int pos;
1695         XMLProperty* prop = 0;
1696         char buf[32];
1697         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
1698         XMLNode* geometry;
1699         int height;
1700         static int32_t done[3] = { 0, 0, 0 };
1701
1702         height = default_height;
1703
1704         if ((geometry = find_named_node (*node, "geometry")) != 0) {
1705
1706                 if ((prop = geometry->property ("y_size")) == 0) {
1707                         prop = geometry->property ("y-size");
1708                 }
1709                 if (prop) {
1710                         height = atoi (prop->value());
1711                 }
1712         }
1713
1714         if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
1715
1716                 if (done[0]) {
1717                         return;
1718                 }
1719
1720                 if (!geometry || (prop = geometry->property("mixer-rhs-pane1-pos")) == 0) {
1721                         pos = height / 3;
1722                         snprintf (buf, sizeof(buf), "%d", pos);
1723                 } else {
1724                         pos = atoi (prop->value());
1725                 }
1726
1727                 if ((done[0] = GTK_WIDGET(rhs_pane1.gobj())->allocation.height > pos)) {
1728                         rhs_pane1.set_position (pos);
1729                 }
1730
1731         } else if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
1732
1733                 if (done[2]) {
1734                         return;
1735                 }
1736
1737                 if (!geometry || (prop = geometry->property("mixer-list-hpane-pos")) == 0) {
1738                         pos = 75;
1739                         snprintf (buf, sizeof(buf), "%d", pos);
1740                 } else {
1741                         pos = atoi (prop->value());
1742                 }
1743
1744                 if ((done[2] = GTK_WIDGET(list_hpane.gobj())->allocation.width > pos)) {
1745                         list_hpane.set_position (pos);
1746                 }
1747         }
1748 }
1749 void
1750 Mixer_UI::scroll_left ()
1751 {
1752         if (!scroller.get_hscrollbar()) return;
1753         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1754         /* stupid GTK: can't rely on clamping across versions */
1755         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
1756 }
1757
1758 void
1759 Mixer_UI::scroll_right ()
1760 {
1761         if (!scroller.get_hscrollbar()) return;
1762         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1763         /* stupid GTK: can't rely on clamping across versions */
1764         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
1765 }
1766
1767 bool
1768 Mixer_UI::on_key_press_event (GdkEventKey* ev)
1769 {
1770         /* focus widget gets first shot, then bindings, otherwise
1771            forward to main window
1772         */
1773
1774         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1775                 return true;
1776         }
1777
1778         KeyboardKey k (ev->state, ev->keyval);
1779
1780         if (bindings.activate (k, Bindings::Press)) {
1781                 return true;
1782         }
1783
1784         return forward_key_press (ev);
1785 }
1786
1787 bool
1788 Mixer_UI::on_key_release_event (GdkEventKey* ev)
1789 {
1790         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1791                 return true;
1792         }
1793
1794         KeyboardKey k (ev->state, ev->keyval);
1795
1796         if (bindings.activate (k, Bindings::Release)) {
1797                 return true;
1798         }
1799
1800         /* don't forward releases */
1801
1802         return true;
1803 }
1804
1805 bool
1806 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
1807 {
1808         switch (ev->direction) {
1809         case GDK_SCROLL_LEFT:
1810                 scroll_left ();
1811                 return true;
1812         case GDK_SCROLL_UP:
1813                 if (ev->state & Keyboard::TertiaryModifier) {
1814                         scroll_left ();
1815                         return true;
1816                 }
1817                 return false;
1818
1819         case GDK_SCROLL_RIGHT:
1820                 scroll_right ();
1821                 return true;
1822
1823         case GDK_SCROLL_DOWN:
1824                 if (ev->state & Keyboard::TertiaryModifier) {
1825                         scroll_right ();
1826                         return true;
1827                 }
1828                 return false;
1829         }
1830
1831         return false;
1832 }
1833
1834
1835 void
1836 Mixer_UI::parameter_changed (string const & p)
1837 {
1838         if (p == "show-group-tabs") {
1839                 bool const s = _session->config.get_show_group_tabs ();
1840                 if (s) {
1841                         _group_tabs->show ();
1842                 } else {
1843                         _group_tabs->hide ();
1844                 }
1845         } else if (p == "default-narrow_ms") {
1846                 bool const s = UIConfiguration::instance().get_default_narrow_ms ();
1847                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1848                         (*i)->set_width_enum (s ? Narrow : Wide, this);
1849                 }
1850         } else if (p == "remote-model") {
1851                 reset_remote_control_ids ();
1852         }
1853 }
1854
1855 void
1856 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
1857 {
1858         g->set_active (a, this);
1859 }
1860
1861 PluginSelector*
1862 Mixer_UI::plugin_selector()
1863 {
1864 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
1865         if (!_plugin_selector)
1866                 _plugin_selector = new PluginSelector (PluginManager::instance());
1867 #endif
1868
1869         return _plugin_selector;
1870 }
1871
1872 void
1873 Mixer_UI::setup_track_display ()
1874 {
1875         track_model = ListStore::create (track_columns);
1876         track_display.set_model (track_model);
1877         track_display.append_column (_("Strips"), track_columns.text);
1878         track_display.append_column (_("Show"), track_columns.visible);
1879         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
1880         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
1881         track_display.get_column (0)->set_expand(true);
1882         track_display.get_column (1)->set_expand(false);
1883         track_display.get_column (0)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
1884         track_display.set_name (X_("EditGroupList"));
1885         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
1886         track_display.set_reorderable (true);
1887         track_display.set_headers_visible (true);
1888         track_display.set_can_focus(false);
1889
1890         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
1891         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
1892
1893         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
1894         track_list_visible_cell->property_activatable() = true;
1895         track_list_visible_cell->property_radio() = false;
1896         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
1897
1898         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
1899
1900         track_display_scroller.add (track_display);
1901         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
1902
1903         VBox* v = manage (new VBox);
1904         v->show ();
1905         v->pack_start (track_display_scroller, true, true);
1906
1907         Button* b = manage (new Button);
1908         b->show ();
1909         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
1910         w->show ();
1911         b->add (*w);
1912
1913         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
1914
1915         v->pack_start (*b, false, false);
1916
1917         track_display_frame.set_name("BaseFrame");
1918         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
1919         track_display_frame.add (*v);
1920
1921         track_display_scroller.show();
1922         track_display_frame.show();
1923         track_display.show();
1924 }
1925
1926 void
1927 Mixer_UI::new_track_or_bus ()
1928 {
1929         ARDOUR_UI::instance()->add_route (this);
1930 }
1931
1932
1933 void
1934 Mixer_UI::update_title ()
1935 {
1936         if (_session) {
1937                 string n;
1938
1939                 if (_session->snap_name() != _session->name()) {
1940                         n = _session->snap_name ();
1941                 } else {
1942                         n = _session->name ();
1943                 }
1944
1945                 if (_session->dirty ()) {
1946                         n = "*" + n;
1947                 }
1948
1949                 WindowTitle title (n);
1950                 title += S_("Window|Mixer");
1951                 title += Glib::get_application_name ();
1952                 set_title (title.get_string());
1953
1954         } else {
1955
1956                 WindowTitle title (S_("Window|Mixer"));
1957                 title += Glib::get_application_name ();
1958                 set_title (title.get_string());
1959         }
1960 }
1961
1962 MixerStrip*
1963 Mixer_UI::strip_by_x (int x)
1964 {
1965         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1966                 int x1, x2, y;
1967
1968                 (*i)->translate_coordinates (*this, 0, 0, x1, y);
1969                 x2 = x1 + (*i)->get_width();
1970
1971                 if (x >= x1 && x <= x2) {
1972                         return (*i);
1973                 }
1974         }
1975
1976         return 0;
1977 }
1978
1979 void
1980 Mixer_UI::set_route_targets_for_operation ()
1981 {
1982         _route_targets.clear ();
1983
1984         if (!_selection.empty()) {
1985                 _route_targets = _selection.routes;
1986                 return;
1987         }
1988
1989 //  removed "implicit" selections of strips, after discussion on IRC
1990
1991 }
1992
1993 void
1994 Mixer_UI::monitor_section_going_away ()
1995 {
1996         if (_monitor_section) {
1997                 out_packer.remove (_monitor_section->tearoff());
1998                 _monitor_section->set_session (0);
1999         }
2000 }
2001
2002 void
2003 Mixer_UI::toggle_midi_input_active (bool flip_others)
2004 {
2005         boost::shared_ptr<RouteList> rl (new RouteList);
2006         bool onoff = false;
2007
2008         set_route_targets_for_operation ();
2009
2010         for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
2011                 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
2012
2013                 if (mt) {
2014                         rl->push_back ((*r)->route());
2015                         onoff = !mt->input_active();
2016                 }
2017         }
2018
2019         _session->set_exclusive_input_active (rl, onoff, flip_others);
2020 }
2021
2022 void
2023 Mixer_UI::maximise_mixer_space ()
2024 {
2025         if (_maximised) {
2026                 return;
2027         }
2028
2029         fullscreen ();
2030
2031         _maximised = true;
2032 }
2033
2034 void
2035 Mixer_UI::restore_mixer_space ()
2036 {
2037         if (!_maximised) {
2038                 return;
2039         }
2040
2041         unfullscreen();
2042
2043         _maximised = false;
2044 }