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         , _visible (false)
  87         , no_track_list_redisplay (false)
  88         , in_group_row_change (false)
  89         , track_menu (0)
  90         , _monitor_section (0)
  91         , _strip_width (Config->get_default_narrow_ms() ? Narrow : Wide)
  92         , ignore_reorder (false)
  93         , _following_editor_selection (false)
  94 {
  95         /* allow this window to become the key focus window */
  96         set_flags (CAN_FOCUS);
  97
  98         Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_order_keys, this, _1), gui_context());
  99
 100         scroller.set_can_default (true);
 101         set_default (scroller);
 102
 103         scroller_base.set_flags (Gtk::CAN_FOCUS);
 104         scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 105         scroller_base.set_name ("MixerWindow");
 106         scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 107         // add as last item of strip packer
 108         strip_packer.pack_end (scroller_base, true, true);
 109
 110         _group_tabs = new MixerGroupTabs (this);
 111         VBox* b = manage (new VBox);
 112         b->pack_start (*_group_tabs, PACK_SHRINK);
 113         b->pack_start (strip_packer);
 114         b->show_all ();
 115
 116         scroller.add (*b);
 117         scroller.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
 118
 119         setup_track_display ();
 120
 121         group_model = ListStore::create (group_columns);
 122         group_display.set_model (group_model);
 123         group_display.append_column (_("Group"), group_columns.text);
 124         group_display.append_column (_("Show"), group_columns.visible);
 125         group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
 126         group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
 127         group_display.get_column (0)->set_expand(true);
 128         group_display.get_column (1)->set_expand(false);
 129         group_display.set_name ("EditGroupList");
 130         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 131         group_display.set_reorderable (true);
 132         group_display.set_headers_visible (true);
 133         group_display.set_rules_hint (true);
 134
 135         /* name is directly editable */
 136
 137         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
 138         name_cell->property_editable() = true;
 139         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 140
 141         /* use checkbox for the active column */
 142
 143         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (1));
 144         active_cell->property_activatable() = true;
 145         active_cell->property_radio() = false;
 146
 147         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 148         /* We use this to notice drag-and-drop reorders of the group list */
 149         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 150         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 151
 152         group_display_scroller.add (group_display);
 153         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 154
 155         HBox* route_group_display_button_box = manage (new HBox());
 156
 157         Button* route_group_add_button = manage (new Button ());
 158         Button* route_group_remove_button = manage (new Button ());
 159
 160         Widget* w;
 161
 162         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 163         w->show();
 164         route_group_add_button->add (*w);
 165
 166         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
 167         w->show();
 168         route_group_remove_button->add (*w);
 169
 170         route_group_display_button_box->set_homogeneous (true);
 171
 172         route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
 173         route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
 174
 175         route_group_display_button_box->add (*route_group_add_button);
 176         route_group_display_button_box->add (*route_group_remove_button);
 177
 178         group_display_vbox.pack_start (group_display_scroller, true, true);
 179         group_display_vbox.pack_start (*route_group_display_button_box, false, false);
 180
 181         group_display_frame.set_name ("BaseFrame");
 182         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 183         group_display_frame.add (group_display_vbox);
 184
 185         rhs_pane1.pack1 (track_display_frame);
 186         rhs_pane1.pack2 (group_display_frame);
 187
 188         list_vpacker.pack_start (rhs_pane1, true, true);
 189
 190         global_hpacker.pack_start (scroller, true, true);
 191 #ifdef GTKOSX
 192         /* current gtk-quartz has dirty updates on borders like this one */
 193         global_hpacker.pack_start (out_packer, false, false, 0);
 194 #else
 195         global_hpacker.pack_start (out_packer, false, false, 12);
 196 #endif
 197         list_hpane.pack1(list_vpacker, true, true);
 198         list_hpane.pack2(global_hpacker, true, false);
 199
 200         rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 201                                                         static_cast<Gtk::Paned*> (&rhs_pane1)));
 202         list_hpane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 203                                                          static_cast<Gtk::Paned*> (&list_hpane)));
 204
 205         global_vpacker.pack_start (list_hpane, true, true);
 206
 207         add (global_vpacker);
 208         set_name ("MixerWindow");
 209
 210         update_title ();
 211
 212         set_wmclass (X_("ardour_mixer"), PROGRAM_NAME);
 213
 214         signal_delete_event().connect (sigc::mem_fun (*this, &Mixer_UI::hide_window));
 215         add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
 216
 217         signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
 218
 219         route_group_display_button_box->show();
 220         route_group_add_button->show();
 221         route_group_remove_button->show();
 222
 223         global_hpacker.show();
 224         global_vpacker.show();
 225         scroller.show();
 226         scroller_base.show();
 227         scroller_hpacker.show();
 228         mixer_scroller_vpacker.show();
 229         list_vpacker.show();
 230         group_display_button_label.show();
 231         group_display_button.show();
 232         group_display_scroller.show();
 233         group_display_vbox.show();
 234         group_display_frame.show();
 235         rhs_pane1.show();
 236         strip_packer.show();
 237         out_packer.show();
 238         list_hpane.show();
 239         group_display.show();
 240
 241         _in_group_rebuild_or_clear = false;
 242
 243         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 244
 245         MonitorSection::setup_knob_images ();
 246
 247 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 248         _plugin_selector = new PluginSelector (PluginManager::instance ());
 249 #endif
 250 }
 251
 252 Mixer_UI::~Mixer_UI ()
 253 {
 254         if (_monitor_section) {
 255                 delete _monitor_section;
 256         }
 257 }
 258
 259 void
 260 Mixer_UI::track_editor_selection ()
 261 {
 262         PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
 263 }
 264
 265
 266 void
 267 Mixer_UI::ensure_float (Window& win)
 268 {
 269         win.set_transient_for (*this);
 270 }
 271
 272 void
 273 Mixer_UI::show_window ()
 274 {
 275         present ();
 276         if (!_visible) {
 277                 set_window_pos_and_size ();
 278
 279                 /* show/hide group tabs as required */
 280                 parameter_changed ("show-group-tabs");
 281
 282                 /* now reset each strips width so the right widgets are shown */
 283                 MixerStrip* ms;
 284
 285                 TreeModel::Children rows = track_model->children();
 286                 TreeModel::Children::iterator ri;
 287
 288                 for (ri = rows.begin(); ri != rows.end(); ++ri) {
 289                         ms = (*ri)[track_columns.strip];
 290                         ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 291                         /* Fix visibility of mixer strip stuff */
 292                         ms->parameter_changed (X_("mixer-strip-visibility"));
 293                 }
 294         }
 295
 296         /* force focus into main area */
 297         scroller_base.grab_focus ();
 298
 299         _visible = true;
 300 }
 301
 302 bool
 303 Mixer_UI::hide_window (GdkEventAny *ev)
 304 {
 305         get_window_pos_and_size ();
 306
 307         _visible = false;
 308         return just_hide_it(ev, static_cast<Gtk::Window *>(this));
 309 }
 310
 311
 312 void
 313 Mixer_UI::add_strips (RouteList& routes)
 314 {
 315         MixerStrip* strip;
 316
 317         try {
 318                 no_track_list_redisplay = true;
 319                 track_display.set_model (Glib::RefPtr<ListStore>());
 320
 321                 for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
 322                         boost::shared_ptr<Route> route = (*x);
 323
 324                         if (route->is_auditioner()) {
 325                                 continue;
 326                         }
 327
 328                         if (route->is_monitor()) {
 329
 330                                 if (!_monitor_section) {
 331                                         _monitor_section = new MonitorSection (_session);
 332
 333                                         XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 334                                         if (mnode) {
 335                                                 _monitor_section->tearoff().set_state (*mnode);
 336                                         }
 337                                 }
 338
 339                                 out_packer.pack_end (_monitor_section->tearoff(), false, false);
 340                                 _monitor_section->set_session (_session);
 341                                 _monitor_section->tearoff().show_all ();
 342
 343                                 route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 344
 345                                 /* no regular strip shown for control out */
 346
 347                                 continue;
 348                         }
 349
 350                         strip = new MixerStrip (*this, _session, route);
 351                         strips.push_back (strip);
 352
 353                         Config->get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 354
 355                         if (strip->width_owner() != strip) {
 356                                 strip->set_width_enum (_strip_width, this);
 357                         }
 358
 359                         show_strip (strip);
 360
 361                         TreeModel::Row row = *(track_model->append());
 362                         row[track_columns.text] = route->name();
 363                         row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
 364                         row[track_columns.route] = route;
 365                         row[track_columns.strip] = strip;
 366
 367                         route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
 368
 369                         strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 370                         strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 371                 }
 372
 373         } catch (...) {
 374         }
 375
 376         no_track_list_redisplay = false;
 377         track_display.set_model (track_model);
 378
 379         sync_order_keys_from_treeview ();
 380         redisplay_track_list ();
 381 }
 382
 383 void
 384 Mixer_UI::remove_strip (MixerStrip* strip)
 385 {
 386         if (_session && _session->deletion_in_progress()) {
 387                 /* its all being taken care of */
 388                 return;
 389         }
 390
 391         TreeModel::Children rows = track_model->children();
 392         TreeModel::Children::iterator ri;
 393         list<MixerStrip *>::iterator i;
 394
 395         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 396                 strips.erase (i);
 397         }
 398
 399         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 400                 if ((*ri)[track_columns.strip] == strip) {
 401                         track_model->erase (ri);
 402                         break;
 403                 }
 404         }
 405 }
 406
 407 void
 408 Mixer_UI::reset_remote_control_ids ()
 409 {
 410         if (Config->get_remote_model() != MixerOrdered || !_session || _session->deletion_in_progress()) {
 411                 return;
 412         }
 413
 414         TreeModel::Children rows = track_model->children();
 415
 416         if (rows.empty()) {
 417                 return;
 418         }
 419
 420         DEBUG_TRACE (DEBUG::OrderKeys, "mixer resets remote control ids after remote model change\n");
 421
 422         TreeModel::Children::iterator ri;
 423         bool rid_change = false;
 424         uint32_t rid = 1;
 425         uint32_t invisible_key = UINT32_MAX;
 426
 427         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 428                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 429                 bool visible = (*ri)[track_columns.visible];
 430
 431                 if (!route->is_master() && !route->is_monitor()) {
 432
 433                         uint32_t new_rid = (visible ? rid : invisible_key--);
 434
 435                         if (new_rid != route->remote_control_id()) {
 436                                 route->set_remote_control_id_from_order_key (MixerSort, new_rid);
 437                                 rid_change = true;
 438                         }
 439
 440                         if (visible) {
 441                                 rid++;
 442                         }
 443                 }
 444         }
 445
 446         if (rid_change) {
 447                 /* tell the world that we changed the remote control IDs */
 448                 _session->notify_remote_id_change ();
 449         }
 450 }
 451
 452 void
 453 Mixer_UI::sync_order_keys_from_treeview ()
 454 {
 455         if (ignore_reorder || !_session || _session->deletion_in_progress()) {
 456                 return;
 457         }
 458
 459         TreeModel::Children rows = track_model->children();
 460
 461         if (rows.empty()) {
 462                 return;
 463         }
 464
 465         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
 466
 467         TreeModel::Children::iterator ri;
 468         bool changed = false;
 469         bool rid_change = false;
 470         uint32_t order = 0;
 471         uint32_t rid = 1;
 472         uint32_t invisible_key = UINT32_MAX;
 473
 474         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 475                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 476                 bool visible = (*ri)[track_columns.visible];
 477
 478                 uint32_t old_key = route->order_key (MixerSort);
 479
 480                 if (order != old_key) {
 481                         route->set_order_key (MixerSort, order);
 482                         changed = true;
 483                 }
 484
 485                 if ((Config->get_remote_model() == MixerOrdered) && !route->is_master() && !route->is_monitor()) {
 486
 487                         uint32_t new_rid = (visible ? rid : invisible_key--);
 488
 489                         if (new_rid != route->remote_control_id()) {
 490                                 route->set_remote_control_id_from_order_key (MixerSort, new_rid);
 491                                 rid_change = true;
 492                         }
 493
 494                         if (visible) {
 495                                 rid++;
 496                         }
 497
 498                 }
 499
 500                 ++order;
 501         }
 502
 503         if (changed) {
 504                 /* tell everyone that we changed the mixer sort keys */
 505                 _session->sync_order_keys (MixerSort);
 506         }
 507
 508         if (rid_change) {
 509                 /* tell the world that we changed the remote control IDs */
 510                 _session->notify_remote_id_change ();
 511         }
 512 }
 513
 514 void
 515 Mixer_UI::sync_treeview_from_order_keys (RouteSortOrderKey src)
 516 {
 517         if (!_session || _session->deletion_in_progress()) {
 518                 return;
 519         }
 520
 521         DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("mixer sync model from order keys, src = %1\n", enum_2_string (src)));
 522
 523         if (src == EditorSort) {
 524
 525                 if (!Config->get_sync_all_route_ordering()) {
 526                         /* editor sort keys changed - we don't care */
 527                         return;
 528                 }
 529
 530                 DEBUG_TRACE (DEBUG::OrderKeys, "reset mixer order key to match editor\n");
 531
 532                 /* editor sort keys were changed, update the mixer sort
 533                  * keys since "sync mixer+editor order" is enabled.
 534                  */
 535
 536                 boost::shared_ptr<RouteList> r = _session->get_routes ();
 537
 538                 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
 539                         (*i)->sync_order_keys (src);
 540                 }
 541         }
 542
 543         /* we could get here after either a change in the Mixer or Editor sort
 544          * order, but either way, the mixer order keys reflect the intended
 545          * order for the GUI, so reorder the treeview model to match it.
 546          */
 547
 548         vector<int> neworder;
 549         TreeModel::Children rows = track_model->children();
 550         uint32_t old_order = 0;
 551         bool changed = false;
 552
 553         if (rows.empty()) {
 554                 return;
 555         }
 556
 557         OrderKeySortedRoutes sorted_routes;
 558
 559         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 560                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 561                 sorted_routes.push_back (RoutePlusOrderKey (route, old_order, route->order_key (MixerSort)));
 562         }
 563
 564         SortByNewDisplayOrder cmp;
 565
 566         sort (sorted_routes.begin(), sorted_routes.end(), cmp);
 567         neworder.assign (sorted_routes.size(), 0);
 568
 569         uint32_t n = 0;
 570
 571         for (OrderKeySortedRoutes::iterator sr = sorted_routes.begin(); sr != sorted_routes.end(); ++sr, ++n) {
 572
 573                 neworder[n] = sr->old_display_order;
 574
 575                 if (sr->old_display_order != n) {
 576                         changed = true;
 577                 }
 578
 579                 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order for %1 from %2 to %3\n",
 580                                                                sr->route->name(), sr->old_display_order, n));
 581         }
 582
 583         if (changed) {
 584                 Unwinder<bool> uw (ignore_reorder, true);
 585                 track_model->reorder (neworder);
 586         }
 587
 588         redisplay_track_list ();
 589 }
 590
 591 void
 592 Mixer_UI::follow_editor_selection ()
 593 {
 594         if (!Config->get_link_editor_and_mixer_selection() || _following_editor_selection) {
 595                 return;
 596         }
 597
 598         _following_editor_selection = true;
 599         _selection.block_routes_changed (true);
 600
 601         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 602
 603         _selection.clear_routes ();
 604
 605         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 606                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
 607                 if (rtav) {
 608                         MixerStrip* ms = strip_by_route (rtav->route());
 609                         if (ms) {
 610                                 _selection.add (ms);
 611                         }
 612                 }
 613         }
 614
 615         _following_editor_selection = false;
 616         _selection.block_routes_changed (false);
 617 }
 618
 619
 620 MixerStrip*
 621 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 622 {
 623         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 624                 if ((*i)->route() == r) {
 625                         return (*i);
 626                 }
 627         }
 628
 629         return 0;
 630 }
 631
 632 bool
 633 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 634 {
 635         if (ev->button == 1) {
 636                 if (_selection.selected (strip)) {
 637                         /* primary-click: toggle selection state of strip */
 638                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 639                                 _selection.remove (strip);
 640                         }
 641                 } else {
 642                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 643                                 _selection.add (strip);
 644                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 645
 646                                 if (!_selection.selected(strip)) {
 647
 648                                         /* extend selection */
 649
 650                                         vector<MixerStrip*> tmp;
 651                                         bool accumulate = false;
 652
 653                                         tmp.push_back (strip);
 654
 655                                         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 656                                                 if ((*i) == strip) {
 657                                                         /* hit clicked strip, start accumulating till we hit the first
 658                                                            selected strip
 659                                                         */
 660                                                         if (accumulate) {
 661                                                                 /* done */
 662                                                                 break;
 663                                                         } else {
 664                                                                 accumulate = true;
 665                                                         }
 666                                                 } else if (_selection.selected (*i)) {
 667                                                         /* hit selected strip. if currently accumulating others,
 668                                                            we're done. if not accumulating others, start doing so.
 669                                                         */
 670                                                         if (accumulate) {
 671                                                                 /* done */
 672                                                                 break;
 673                                                         } else {
 674                                                                 accumulate = true;
 675                                                         }
 676                                                 } else {
 677                                                         if (accumulate) {
 678                                                                 tmp.push_back (*i);
 679                                                         }
 680                                                 }
 681                                         }
 682
 683                                         for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 684                                                 _selection.add (*i);
 685                                         }
 686                                 }
 687
 688                         } else {
 689                                 _selection.set (strip);
 690                         }
 691                 }
 692         }
 693
 694         return true;
 695 }
 696
 697 void
 698 Mixer_UI::set_session (Session* sess)
 699 {
 700         SessionHandlePtr::set_session (sess);
 701
 702         if (_plugin_selector) {
 703                 _plugin_selector->set_session (_session);
 704         }
 705
 706         _group_tabs->set_session (sess);
 707
 708         if (!_session) {
 709                 return;
 710         }
 711
 712         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 713         set_state (*node);
 714
 715         update_title ();
 716
 717         initial_track_display ();
 718
 719         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
 720         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 721         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 722         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 723         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 724         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 725         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 726
 727         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 728
 729         route_groups_changed ();
 730
 731         if (_visible) {
 732                 show_window();
 733
 734                 /* Bit of a hack; if we're here, we're opening the mixer because of our
 735                    instant XML state having a show-mixer property.  Fix up the corresponding
 736                    action state.
 737                 */
 738                 ActionManager::check_toggleaction ("<Actions>/Common/toggle-mixer");
 739         }
 740
 741         start_updating ();
 742 }
 743
 744 void
 745 Mixer_UI::session_going_away ()
 746 {
 747         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 748
 749         _in_group_rebuild_or_clear = true;
 750         group_model->clear ();
 751         _in_group_rebuild_or_clear = false;
 752
 753         _selection.clear ();
 754         track_model->clear ();
 755
 756         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 757                 delete (*i);
 758         }
 759
 760         if (_monitor_section) {
 761                 _monitor_section->tearoff().hide_visible ();
 762         }
 763
 764         strips.clear ();
 765
 766         stop_updating ();
 767
 768         SessionHandlePtr::session_going_away ();
 769
 770         _session = 0;
 771         update_title ();
 772 }
 773
 774 void
 775 Mixer_UI::track_visibility_changed (std::string const & path)
 776 {
 777         if (_session && _session->deletion_in_progress()) {
 778                 return;
 779         }
 780
 781         TreeIter iter;
 782
 783         if ((iter = track_model->get_iter (path))) {
 784                 MixerStrip* strip = (*iter)[track_columns.strip];
 785                 if (strip) {
 786                         bool visible = (*iter)[track_columns.visible];
 787
 788                         if (strip->set_marked_for_display (!visible)) {
 789                                 update_track_visibility ();
 790                         }
 791                 }
 792         }
 793 }
 794
 795 void
 796 Mixer_UI::update_track_visibility ()
 797 {
 798         TreeModel::Children rows = track_model->children();
 799         TreeModel::Children::iterator i;
 800
 801         {
 802                 Unwinder<bool> uw (no_track_list_redisplay, true);
 803
 804                 for (i = rows.begin(); i != rows.end(); ++i) {
 805                         MixerStrip *strip = (*i)[track_columns.strip];
 806                         (*i)[track_columns.visible] = strip->marked_for_display ();
 807                 }
 808
 809                 /* force route order keys catch up with visibility changes
 810                  */
 811
 812                 sync_order_keys_from_treeview ();
 813         }
 814
 815         redisplay_track_list ();
 816 }
 817
 818 void
 819 Mixer_UI::show_strip (MixerStrip* ms)
 820 {
 821         TreeModel::Children rows = track_model->children();
 822         TreeModel::Children::iterator i;
 823
 824         for (i = rows.begin(); i != rows.end(); ++i) {
 825
 826                 MixerStrip* strip = (*i)[track_columns.strip];
 827                 if (strip == ms) {
 828                         (*i)[track_columns.visible] = true;
 829                         redisplay_track_list ();
 830                         break;
 831                 }
 832         }
 833 }
 834
 835 void
 836 Mixer_UI::hide_strip (MixerStrip* ms)
 837 {
 838         TreeModel::Children rows = track_model->children();
 839         TreeModel::Children::iterator i;
 840
 841         for (i = rows.begin(); i != rows.end(); ++i) {
 842
 843                 MixerStrip* strip = (*i)[track_columns.strip];
 844                 if (strip == ms) {
 845                         (*i)[track_columns.visible] = false;
 846                         redisplay_track_list ();
 847                         break;
 848                 }
 849         }
 850 }
 851
 852 gint
 853 Mixer_UI::start_updating ()
 854 {
 855     fast_screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
 856     return 0;
 857 }
 858
 859 gint
 860 Mixer_UI::stop_updating ()
 861 {
 862     fast_screen_update_connection.disconnect();
 863     return 0;
 864 }
 865
 866 void
 867 Mixer_UI::fast_update_strips ()
 868 {
 869         if (is_mapped () && _session) {
 870                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 871                         (*i)->fast_update ();
 872                 }
 873         }
 874 }
 875
 876 void
 877 Mixer_UI::set_all_strips_visibility (bool yn)
 878 {
 879         TreeModel::Children rows = track_model->children();
 880         TreeModel::Children::iterator i;
 881
 882         {
 883                 Unwinder<bool> uw (no_track_list_redisplay, true);
 884
 885                 for (i = rows.begin(); i != rows.end(); ++i) {
 886
 887                         TreeModel::Row row = (*i);
 888                         MixerStrip* strip = row[track_columns.strip];
 889
 890                         if (strip == 0) {
 891                                 continue;
 892                         }
 893
 894                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 895                                 continue;
 896                         }
 897
 898                         (*i)[track_columns.visible] = yn;
 899                 }
 900         }
 901
 902         redisplay_track_list ();
 903 }
 904
 905
 906 void
 907 Mixer_UI::set_all_audio_visibility (int tracks, bool yn)
 908 {
 909         TreeModel::Children rows = track_model->children();
 910         TreeModel::Children::iterator i;
 911
 912         {
 913                 Unwinder<bool> uw (no_track_list_redisplay, true);
 914
 915                 for (i = rows.begin(); i != rows.end(); ++i) {
 916                         TreeModel::Row row = (*i);
 917                         MixerStrip* strip = row[track_columns.strip];
 918
 919                         if (strip == 0) {
 920                                 continue;
 921                         }
 922
 923                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 924                                 continue;
 925                         }
 926
 927                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
 928
 929                         switch (tracks) {
 930                         case 0:
 931                                 (*i)[track_columns.visible] = yn;
 932                                 break;
 933
 934                         case 1:
 935                                 if (at) { /* track */
 936                                         (*i)[track_columns.visible] = yn;
 937                                 }
 938                                 break;
 939
 940                         case 2:
 941                                 if (!at) { /* bus */
 942                                         (*i)[track_columns.visible] = yn;
 943                                 }
 944                                 break;
 945                         }
 946                 }
 947         }
 948
 949         redisplay_track_list ();
 950 }
 951
 952 void
 953 Mixer_UI::hide_all_routes ()
 954 {
 955         set_all_strips_visibility (false);
 956 }
 957
 958 void
 959 Mixer_UI::show_all_routes ()
 960 {
 961         set_all_strips_visibility (true);
 962 }
 963
 964 void
 965 Mixer_UI::show_all_audiobus ()
 966 {
 967         set_all_audio_visibility (2, true);
 968 }
 969 void
 970 Mixer_UI::hide_all_audiobus ()
 971 {
 972         set_all_audio_visibility (2, false);
 973 }
 974
 975 void
 976 Mixer_UI::show_all_audiotracks()
 977 {
 978         set_all_audio_visibility (1, true);
 979 }
 980 void
 981 Mixer_UI::hide_all_audiotracks ()
 982 {
 983         set_all_audio_visibility (1, false);
 984 }
 985
 986 void
 987 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
 988 {
 989         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
 990         sync_order_keys_from_treeview ();
 991 }
 992
 993 void
 994 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
 995 {
 996         /* this happens as the second step of a DnD within the treeview as well
 997            as when a row/route is actually deleted.
 998         */
 999         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1000         sync_order_keys_from_treeview ();
1001 }
1002
1003 void
1004 Mixer_UI::redisplay_track_list ()
1005 {
1006         TreeModel::Children rows = track_model->children();
1007         TreeModel::Children::iterator i;
1008
1009         if (no_track_list_redisplay) {
1010                 return;
1011         }
1012
1013         for (i = rows.begin(); i != rows.end(); ++i) {
1014
1015                 MixerStrip* strip = (*i)[track_columns.strip];
1016
1017                 if (strip == 0) {
1018                         /* we're in the middle of changing a row, don't worry */
1019                         continue;
1020                 }
1021
1022                 bool const visible = (*i)[track_columns.visible];
1023
1024                 if (visible) {
1025                         strip->set_gui_property ("visible", true);
1026
1027                         if (strip->packed()) {
1028
1029                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1030                                         out_packer.reorder_child (*strip, -1);
1031
1032                                 } else {
1033                                         strip_packer.reorder_child (*strip, -1); /* put at end */
1034                                 }
1035
1036                         } else {
1037
1038                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1039                                         out_packer.pack_start (*strip, false, false);
1040                                 } else {
1041                                         strip_packer.pack_start (*strip, false, false);
1042                                 }
1043                                 strip->set_packed (true);
1044                         }
1045
1046                 } else {
1047
1048                         strip->set_gui_property ("visible", false);
1049
1050                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1051                                 /* do nothing, these cannot be hidden */
1052                         } else {
1053                                 if (strip->packed()) {
1054                                         strip_packer.remove (*strip);
1055                                         strip->set_packed (false);
1056                                 }
1057                         }
1058                 }
1059         }
1060
1061         _group_tabs->set_dirty ();
1062 }
1063
1064 void
1065 Mixer_UI::strip_width_changed ()
1066 {
1067         _group_tabs->set_dirty ();
1068
1069 #ifdef GTKOSX
1070         TreeModel::Children rows = track_model->children();
1071         TreeModel::Children::iterator i;
1072         long order;
1073
1074         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1075                 MixerStrip* strip = (*i)[track_columns.strip];
1076
1077                 if (strip == 0) {
1078                         continue;
1079                 }
1080
1081                 bool visible = (*i)[track_columns.visible];
1082
1083                 if (visible) {
1084                         strip->queue_draw();
1085                 }
1086         }
1087 #endif
1088
1089 }
1090
1091 struct SignalOrderRouteSorter {
1092     bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
1093             if (a->is_master() || a->is_monitor()) {
1094                     /* "a" is a special route (master, monitor, etc), and comes
1095                      * last in the mixer ordering
1096                      */
1097                     return false;
1098             } else if (b->is_master() || b->is_monitor()) {
1099                     /* everything comes before b */
1100                     return true;
1101             }
1102             return a->order_key (MixerSort) < b->order_key (MixerSort);
1103
1104     }
1105 };
1106
1107 void
1108 Mixer_UI::initial_track_display ()
1109 {
1110         boost::shared_ptr<RouteList> routes = _session->get_routes();
1111         RouteList copy (*routes);
1112         SignalOrderRouteSorter sorter;
1113
1114         copy.sort (sorter);
1115
1116         {
1117                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1118                 Unwinder<bool> uw2 (ignore_reorder, true);
1119
1120                 track_model->clear ();
1121                 add_strips (copy);
1122         }
1123
1124         _session->sync_order_keys (MixerSort);
1125
1126         redisplay_track_list ();
1127 }
1128
1129 void
1130 Mixer_UI::show_track_list_menu ()
1131 {
1132         if (track_menu == 0) {
1133                 build_track_menu ();
1134         }
1135
1136         track_menu->popup (1, gtk_get_current_event_time());
1137 }
1138
1139 bool
1140 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1141 {
1142         if (Keyboard::is_context_menu_event (ev)) {
1143                 show_track_list_menu ();
1144                 return true;
1145         }
1146
1147         return false;
1148 }
1149
1150 void
1151 Mixer_UI::build_track_menu ()
1152 {
1153         using namespace Menu_Helpers;
1154         using namespace Gtk;
1155
1156         track_menu = new Menu;
1157         track_menu->set_name ("ArdourContextMenu");
1158         MenuList& items = track_menu->items();
1159
1160         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1161         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1162         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1163         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1164         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1165         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1166
1167 }
1168
1169 void
1170 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1171 {
1172         if (!what_changed.contains (ARDOUR::Properties::name)) {
1173                 return;
1174         }
1175
1176         ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1177
1178         TreeModel::Children rows = track_model->children();
1179         TreeModel::Children::iterator i;
1180
1181         for (i = rows.begin(); i != rows.end(); ++i) {
1182                 if ((*i)[track_columns.strip] == mx) {
1183                         (*i)[track_columns.text] = mx->route()->name();
1184                         return;
1185                 }
1186         }
1187
1188         error << _("track display list item for renamed strip not found!") << endmsg;
1189 }
1190
1191 bool
1192 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1193 {
1194         TreeModel::Path path;
1195         TreeViewColumn* column;
1196         int cellx;
1197         int celly;
1198
1199         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1200                 return false;
1201         }
1202
1203         TreeIter iter = group_model->get_iter (path);
1204         if (!iter) {
1205                 return false;
1206         }
1207
1208         RouteGroup* group = (*iter)[group_columns.group];
1209
1210         if (Keyboard::is_context_menu_event (ev)) {
1211                 _group_tabs->get_menu(group)->popup (1, ev->time);
1212                 return true;
1213         }
1214
1215         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1216         case 0:
1217                 if (Keyboard::is_edit_event (ev)) {
1218                         if (group) {
1219                                 // edit_route_group (group);
1220 #ifdef GTKOSX
1221                                 group_display.queue_draw();
1222 #endif
1223                                 return true;
1224                         }
1225                 }
1226                 break;
1227
1228         case 1:
1229         {
1230                 bool visible = (*iter)[group_columns.visible];
1231                 (*iter)[group_columns.visible] = !visible;
1232 #ifdef GTKOSX
1233                 group_display.queue_draw();
1234 #endif
1235                 return true;
1236         }
1237
1238         default:
1239                 break;
1240         }
1241
1242         return false;
1243  }
1244
1245 void
1246 Mixer_UI::activate_all_route_groups ()
1247 {
1248         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1249 }
1250
1251 void
1252 Mixer_UI::disable_all_route_groups ()
1253 {
1254         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1255 }
1256
1257 void
1258 Mixer_UI::route_groups_changed ()
1259 {
1260         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1261
1262         _in_group_rebuild_or_clear = true;
1263
1264         /* just rebuild the while thing */
1265
1266         group_model->clear ();
1267
1268         {
1269                 TreeModel::Row row;
1270                 row = *(group_model->append());
1271                 row[group_columns.visible] = true;
1272                 row[group_columns.text] = (_("-all-"));
1273                 row[group_columns.group] = 0;
1274         }
1275
1276         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1277
1278         _group_tabs->set_dirty ();
1279         _in_group_rebuild_or_clear = false;
1280 }
1281
1282 void
1283 Mixer_UI::new_route_group ()
1284 {
1285         RouteList rl;
1286
1287         _group_tabs->run_new_group_dialog (rl);
1288 }
1289
1290 void
1291 Mixer_UI::remove_selected_route_group ()
1292 {
1293         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1294         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1295
1296         if (rows.empty()) {
1297                 return;
1298         }
1299
1300         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1301         TreeIter iter;
1302
1303         /* selection mode is single, so rows.begin() is it */
1304
1305         if ((iter = group_model->get_iter (*i))) {
1306
1307                 RouteGroup* rg = (*iter)[group_columns.group];
1308
1309                 if (rg) {
1310                         _session->remove_route_group (*rg);
1311                 }
1312         }
1313 }
1314
1315 void
1316 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1317 {
1318         if (in_group_row_change) {
1319                 return;
1320         }
1321
1322         /* force an update of any mixer strips that are using this group,
1323            otherwise mix group names don't change in mixer strips
1324         */
1325
1326         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1327                 if ((*i)->route_group() == group) {
1328                         (*i)->route_group_changed();
1329                 }
1330         }
1331
1332         TreeModel::iterator i;
1333         TreeModel::Children rows = group_model->children();
1334         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1335
1336         in_group_row_change = true;
1337
1338         for (i = rows.begin(); i != rows.end(); ++i) {
1339                 if ((*i)[group_columns.group] == group) {
1340                         (*i)[group_columns.visible] = !group->is_hidden ();
1341                         (*i)[group_columns.text] = group->name ();
1342                         break;
1343                 }
1344         }
1345
1346         in_group_row_change = false;
1347
1348         if (change.contains (Properties::name)) {
1349                 _group_tabs->set_dirty ();
1350         }
1351
1352         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1353                 if ((*j)->route_group() == group) {
1354                         if (group->is_hidden ()) {
1355                                 hide_strip (*j);
1356                         } else {
1357                                 show_strip (*j);
1358                         }
1359                 }
1360         }
1361 }
1362
1363 void
1364 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1365 {
1366         RouteGroup* group;
1367         TreeIter iter;
1368
1369         if ((iter = group_model->get_iter (path))) {
1370
1371                 if ((group = (*iter)[group_columns.group]) == 0) {
1372                         return;
1373                 }
1374
1375                 if (new_text != group->name()) {
1376                         group->set_name (new_text);
1377                 }
1378         }
1379 }
1380
1381 void
1382 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1383 {
1384         RouteGroup* group;
1385
1386         if (in_group_row_change) {
1387                 return;
1388         }
1389
1390         if ((group = (*iter)[group_columns.group]) == 0) {
1391                 return;
1392         }
1393
1394         std::string name = (*iter)[group_columns.text];
1395
1396         if (name != group->name()) {
1397                 group->set_name (name);
1398         }
1399
1400         bool hidden = !(*iter)[group_columns.visible];
1401
1402         if (hidden != group->is_hidden ()) {
1403                 group->set_hidden (hidden, this);
1404         }
1405 }
1406
1407 /** Called when a group model row is deleted, but also when the model is
1408  *  reordered by a user drag-and-drop; the latter is what we are
1409  *  interested in here.
1410  */
1411 void
1412 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1413 {
1414         if (_in_group_rebuild_or_clear) {
1415                 return;
1416         }
1417
1418         /* Re-write the session's route group list so that the new order is preserved */
1419
1420         list<RouteGroup*> new_list;
1421
1422         Gtk::TreeModel::Children children = group_model->children();
1423         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1424                 RouteGroup* g = (*i)[group_columns.group];
1425                 if (g) {
1426                         new_list.push_back (g);
1427                 }
1428         }
1429
1430         _session->reorder_route_groups (new_list);
1431 }
1432
1433
1434 void
1435 Mixer_UI::add_route_group (RouteGroup* group)
1436 {
1437         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1438         bool focus = false;
1439
1440         in_group_row_change = true;
1441
1442         TreeModel::Row row = *(group_model->append());
1443         row[group_columns.visible] = !group->is_hidden ();
1444         row[group_columns.group] = group;
1445         if (!group->name().empty()) {
1446                 row[group_columns.text] = group->name();
1447         } else {
1448                 row[group_columns.text] = _("unnamed");
1449                 focus = true;
1450         }
1451
1452         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1453
1454         if (focus) {
1455                 TreeViewColumn* col = group_display.get_column (0);
1456                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1457                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1458         }
1459
1460         _group_tabs->set_dirty ();
1461
1462         in_group_row_change = false;
1463 }
1464
1465 bool
1466 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1467 {
1468         using namespace Menu_Helpers;
1469
1470         if (Keyboard::is_context_menu_event (ev)) {
1471                 ARDOUR_UI::instance()->add_route (this);
1472                 return true;
1473         }
1474
1475         return false;
1476 }
1477
1478 void
1479 Mixer_UI::set_strip_width (Width w)
1480 {
1481         _strip_width = w;
1482
1483         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1484                 (*i)->set_width_enum (w, this);
1485         }
1486 }
1487
1488 void
1489 Mixer_UI::set_window_pos_and_size ()
1490 {
1491         resize (m_width, m_height);
1492         move (m_root_x, m_root_y);
1493 }
1494
1495         void
1496 Mixer_UI::get_window_pos_and_size ()
1497 {
1498         get_position(m_root_x, m_root_y);
1499         get_size(m_width, m_height);
1500 }
1501
1502 int
1503 Mixer_UI::set_state (const XMLNode& node)
1504 {
1505         const XMLProperty* prop;
1506         XMLNode* geometry;
1507
1508         m_width = default_width;
1509         m_height = default_height;
1510         m_root_x = 1;
1511         m_root_y = 1;
1512
1513         if ((geometry = find_named_node (node, "geometry")) != 0) {
1514
1515                 XMLProperty* prop;
1516
1517                 if ((prop = geometry->property("x_size")) == 0) {
1518                         prop = geometry->property ("x-size");
1519                 }
1520                 if (prop) {
1521                         m_width = atoi(prop->value());
1522                 }
1523                 if ((prop = geometry->property("y_size")) == 0) {
1524                         prop = geometry->property ("y-size");
1525                 }
1526                 if (prop) {
1527                         m_height = atoi(prop->value());
1528                 }
1529
1530                 if ((prop = geometry->property ("x_pos")) == 0) {
1531                         prop = geometry->property ("x-pos");
1532                 }
1533                 if (prop) {
1534                         m_root_x = atoi (prop->value());
1535
1536                 }
1537                 if ((prop = geometry->property ("y_pos")) == 0) {
1538                         prop = geometry->property ("y-pos");
1539                 }
1540                 if (prop) {
1541                         m_root_y = atoi (prop->value());
1542                 }
1543         }
1544
1545         set_window_pos_and_size ();
1546
1547         if ((prop = node.property ("narrow-strips"))) {
1548                 if (string_is_affirmative (prop->value())) {
1549                         set_strip_width (Narrow);
1550                 } else {
1551                         set_strip_width (Wide);
1552                 }
1553         }
1554
1555         if ((prop = node.property ("show-mixer"))) {
1556                 if (string_is_affirmative (prop->value())) {
1557                        _visible = true;
1558                 }
1559         }
1560
1561         return 0;
1562 }
1563
1564 XMLNode&
1565 Mixer_UI::get_state (void)
1566 {
1567         XMLNode* node = new XMLNode ("Mixer");
1568
1569         if (is_realized()) {
1570                 Glib::RefPtr<Gdk::Window> win = get_window();
1571
1572                 get_window_pos_and_size ();
1573
1574                 XMLNode* geometry = new XMLNode ("geometry");
1575                 char buf[32];
1576                 snprintf(buf, sizeof(buf), "%d", m_width);
1577                 geometry->add_property(X_("x_size"), string(buf));
1578                 snprintf(buf, sizeof(buf), "%d", m_height);
1579                 geometry->add_property(X_("y_size"), string(buf));
1580                 snprintf(buf, sizeof(buf), "%d", m_root_x);
1581                 geometry->add_property(X_("x_pos"), string(buf));
1582                 snprintf(buf, sizeof(buf), "%d", m_root_y);
1583                 geometry->add_property(X_("y_pos"), string(buf));
1584
1585                 // written only for compatibility, they are not used.
1586                 snprintf(buf, sizeof(buf), "%d", 0);
1587                 geometry->add_property(X_("x_off"), string(buf));
1588                 snprintf(buf, sizeof(buf), "%d", 0);
1589                 geometry->add_property(X_("y_off"), string(buf));
1590
1591                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&rhs_pane1)->gobj()));
1592                 geometry->add_property(X_("mixer_rhs_pane1_pos"), string(buf));
1593                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&list_hpane)->gobj()));
1594                 geometry->add_property(X_("mixer_list_hpane_pos"), string(buf));
1595
1596                 node->add_child_nocopy (*geometry);
1597         }
1598
1599         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1600
1601         node->add_property ("show-mixer", _visible ? "yes" : "no");
1602
1603         return *node;
1604 }
1605
1606
1607 void
1608 Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
1609 {
1610         int pos;
1611         XMLProperty* prop = 0;
1612         char buf[32];
1613         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
1614         XMLNode* geometry;
1615         int height;
1616         static int32_t done[3] = { 0, 0, 0 };
1617
1618         height = default_height;
1619
1620         if ((geometry = find_named_node (*node, "geometry")) != 0) {
1621
1622                 if ((prop = geometry->property ("y_size")) == 0) {
1623                         prop = geometry->property ("y-size");
1624                 }
1625                 if (prop) {
1626                         height = atoi (prop->value());
1627                 }
1628         }
1629
1630         if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
1631
1632                 if (done[0]) {
1633                         return;
1634                 }
1635
1636                 if (!geometry || (prop = geometry->property("mixer-rhs-pane1-pos")) == 0) {
1637                         pos = height / 3;
1638                         snprintf (buf, sizeof(buf), "%d", pos);
1639                 } else {
1640                         pos = atoi (prop->value());
1641                 }
1642
1643                 if ((done[0] = GTK_WIDGET(rhs_pane1.gobj())->allocation.height > pos)) {
1644                         rhs_pane1.set_position (pos);
1645                 }
1646
1647         } else if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
1648
1649                 if (done[2]) {
1650                         return;
1651                 }
1652
1653                 if (!geometry || (prop = geometry->property("mixer-list-hpane-pos")) == 0) {
1654                         pos = 75;
1655                         snprintf (buf, sizeof(buf), "%d", pos);
1656                 } else {
1657                         pos = atoi (prop->value());
1658                 }
1659
1660                 if ((done[2] = GTK_WIDGET(list_hpane.gobj())->allocation.width > pos)) {
1661                         list_hpane.set_position (pos);
1662                 }
1663         }
1664 }
1665 void
1666 Mixer_UI::scroll_left ()
1667 {
1668         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1669         /* stupid GTK: can't rely on clamping across versions */
1670         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
1671 }
1672
1673 void
1674 Mixer_UI::scroll_right ()
1675 {
1676         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1677         /* stupid GTK: can't rely on clamping across versions */
1678         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
1679 }
1680
1681 bool
1682 Mixer_UI::on_key_press_event (GdkEventKey* ev)
1683 {
1684         /* focus widget gets first shot, then bindings, otherwise
1685            forward to main window
1686         */
1687
1688         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1689                 return true;
1690         }
1691
1692         KeyboardKey k (ev->state, ev->keyval);
1693
1694         if (bindings.activate (k, Bindings::Press)) {
1695                 return true;
1696         }
1697
1698         return forward_key_press (ev);
1699 }
1700
1701 bool
1702 Mixer_UI::on_key_release_event (GdkEventKey* ev)
1703 {
1704         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1705                 return true;
1706         }
1707
1708         KeyboardKey k (ev->state, ev->keyval);
1709
1710         if (bindings.activate (k, Bindings::Release)) {
1711                 return true;
1712         }
1713
1714         /* don't forward releases */
1715
1716         return true;
1717 }
1718
1719 bool
1720 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
1721 {
1722         switch (ev->direction) {
1723         case GDK_SCROLL_LEFT:
1724                 scroll_left ();
1725                 return true;
1726         case GDK_SCROLL_UP:
1727                 if (ev->state & Keyboard::TertiaryModifier) {
1728                         scroll_left ();
1729                         return true;
1730                 }
1731                 return false;
1732
1733         case GDK_SCROLL_RIGHT:
1734                 scroll_right ();
1735                 return true;
1736
1737         case GDK_SCROLL_DOWN:
1738                 if (ev->state & Keyboard::TertiaryModifier) {
1739                         scroll_right ();
1740                         return true;
1741                 }
1742                 return false;
1743         }
1744
1745         return false;
1746 }
1747
1748
1749 void
1750 Mixer_UI::parameter_changed (string const & p)
1751 {
1752         if (p == "show-group-tabs") {
1753                 bool const s = _session->config.get_show_group_tabs ();
1754                 if (s) {
1755                         _group_tabs->show ();
1756                 } else {
1757                         _group_tabs->hide ();
1758                 }
1759         } else if (p == "default-narrow_ms") {
1760                 bool const s = Config->get_default_narrow_ms ();
1761                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1762                         (*i)->set_width_enum (s ? Narrow : Wide, this);
1763                 }
1764         } else if (p == "remote-model") {
1765                 reset_remote_control_ids ();
1766         }
1767 }
1768
1769 void
1770 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
1771 {
1772         g->set_active (a, this);
1773 }
1774
1775 PluginSelector*
1776 Mixer_UI::plugin_selector()
1777 {
1778 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
1779         if (!_plugin_selector)
1780                 _plugin_selector = new PluginSelector (PluginManager::instance());
1781 #endif
1782
1783         return _plugin_selector;
1784 }
1785
1786 void
1787 Mixer_UI::setup_track_display ()
1788 {
1789         track_model = ListStore::create (track_columns);
1790         track_display.set_model (track_model);
1791         track_display.append_column (_("Strips"), track_columns.text);
1792         track_display.append_column (_("Show"), track_columns.visible);
1793         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
1794         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
1795         track_display.get_column (0)->set_expand(true);
1796         track_display.get_column (1)->set_expand(false);
1797         track_display.set_name (X_("EditGroupList"));
1798         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
1799         track_display.set_reorderable (true);
1800         track_display.set_headers_visible (true);
1801
1802         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
1803         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
1804
1805         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
1806         track_list_visible_cell->property_activatable() = true;
1807         track_list_visible_cell->property_radio() = false;
1808         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
1809
1810         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
1811
1812         track_display_scroller.add (track_display);
1813         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
1814
1815         VBox* v = manage (new VBox);
1816         v->show ();
1817         v->pack_start (track_display_scroller, true, true);
1818
1819         Button* b = manage (new Button);
1820         b->show ();
1821         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
1822         w->show ();
1823         b->add (*w);
1824
1825         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
1826
1827         v->pack_start (*b, false, false);
1828
1829         track_display_frame.set_name("BaseFrame");
1830         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
1831         track_display_frame.add (*v);
1832
1833         track_display_scroller.show();
1834         track_display_frame.show();
1835         track_display.show();
1836 }
1837
1838 void
1839 Mixer_UI::new_track_or_bus ()
1840 {
1841         ARDOUR_UI::instance()->add_route (this);
1842 }
1843
1844
1845 void
1846 Mixer_UI::update_title ()
1847 {
1848         if (_session) {
1849                 string n;
1850
1851                 if (_session->snap_name() != _session->name()) {
1852                         n = _session->snap_name ();
1853                 } else {
1854                         n = _session->name ();
1855                 }
1856
1857                 if (_session->dirty ()) {
1858                         n = "*" + n;
1859                 }
1860
1861                 WindowTitle title (n);
1862                 title += S_("Window|Mixer");
1863                 title += Glib::get_application_name ();
1864                 set_title (title.get_string());
1865
1866         } else {
1867
1868                 WindowTitle title (S_("Window|Mixer"));
1869                 title += Glib::get_application_name ();
1870                 set_title (title.get_string());
1871         }
1872 }
1873
1874 MixerStrip*
1875 Mixer_UI::strip_by_x (int x)
1876 {
1877         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1878                 int x1, x2, y;
1879
1880                 (*i)->translate_coordinates (*this, 0, 0, x1, y);
1881                 x2 = x1 + (*i)->get_width();
1882
1883                 if (x >= x1 && x <= x2) {
1884                         return (*i);
1885                 }
1886         }
1887
1888         return 0;
1889 }
1890
1891 void
1892 Mixer_UI::set_route_targets_for_operation ()
1893 {
1894         _route_targets.clear ();
1895
1896         if (!_selection.empty()) {
1897                 _route_targets = _selection.routes;
1898                 return;
1899         }
1900
1901         /* nothing selected ... try to get mixer strip at mouse */
1902
1903         int x, y;
1904         get_pointer (x, y);
1905
1906         MixerStrip* ms = strip_by_x (x);
1907
1908         if (ms) {
1909                 _route_targets.insert (ms);
1910         }
1911 }
1912
1913 void
1914 Mixer_UI::monitor_section_going_away ()
1915 {
1916         if (_monitor_section) {
1917                 out_packer.remove (_monitor_section->tearoff());
1918                 _monitor_section->set_session (0);
1919         }
1920 }
1921
1922 void
1923 Mixer_UI::toggle_midi_input_active (bool flip_others)
1924 {
1925         boost::shared_ptr<RouteList> rl (new RouteList);
1926         bool onoff;
1927
1928         set_route_targets_for_operation ();
1929
1930         for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
1931                 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
1932
1933                 if (mt) {
1934                         rl->push_back ((*r)->route());
1935                         onoff = !mt->input_active();
1936                 }
1937         }
1938
1939         _session->set_exclusive_input_active (rl, onoff, flip_others);
1940 }
1941