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