gtk2_ardour/mixer_ui.cc

   1 /*
   2     Copyright (C) 2000-2004 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifdef WAF_BUILD
  21 #include "gtk2ardour-config.h"
  22 #endif
  23
  24 #include <algorithm>
  25 #include <map>
  26 #include <sigc++/bind.h>
  27
  28 #include <gtkmm/accelmap.h>
  29
  30 #include "pbd/convert.h"
  31 #include "pbd/unwind.h"
  32
  33 #include <glibmm/threads.h>
  34
  35 #include <gtkmm2ext/gtk_ui.h>
  36 #include <gtkmm2ext/utils.h>
  37 #include <gtkmm2ext/tearoff.h>
  38 #include <gtkmm2ext/window_title.h>
  39
  40 #include "ardour/debug.h"
  41 #include "ardour/midi_track.h"
  42 #include "ardour/plugin_manager.h"
  43 #include "ardour/route_group.h"
  44 #include "ardour/route_sorters.h"
  45 #include "ardour/session.h"
  46
  47 #include "keyboard.h"
  48 #include "mixer_ui.h"
  49 #include "mixer_strip.h"
  50 #include "monitor_section.h"
  51 #include "plugin_selector.h"
  52 #include "public_editor.h"
  53 #include "ardour_ui.h"
  54 #include "prompter.h"
  55 #include "utils.h"
  56 #include "route_sorter.h"
  57 #include "actions.h"
  58 #include "gui_thread.h"
  59 #include "mixer_group_tabs.h"
  60 #include "timers.h"
  61 #include "ui_config.h"
  62
  63 #include "i18n.h"
  64
  65 using namespace ARDOUR;
  66 using namespace ARDOUR_UI_UTILS;
  67 using namespace PBD;
  68 using namespace Gtk;
  69 using namespace Glib;
  70 using namespace Gtkmm2ext;
  71 using namespace std;
  72
  73 using PBD::atoi;
  74 using PBD::Unwinder;
  75
  76 Mixer_UI* Mixer_UI::_instance = 0;
  77
  78 Mixer_UI*
  79 Mixer_UI::instance ()
  80 {
  81         if (!_instance) {
  82                 _instance  = new Mixer_UI;
  83         }
  84
  85         return _instance;
  86 }
  87
  88 Mixer_UI::Mixer_UI ()
  89         : Window (Gtk::WINDOW_TOPLEVEL)
  90         , VisibilityTracker (*((Gtk::Window*) this))
  91         , _visible (false)
  92         , no_track_list_redisplay (false)
  93         , in_group_row_change (false)
  94         , track_menu (0)
  95         , _monitor_section (0)
  96         , _plugin_selector (0)
  97         , _strip_width (UIConfiguration::instance().get_default_narrow_ms() ? Narrow : Wide)
  98         , ignore_reorder (false)
  99         , _in_group_rebuild_or_clear (false)
 100         , _route_deletion_in_progress (false)
 101         , _following_editor_selection (false)
 102         , _maximised (false)
 103         , _show_mixer_list (true)
 104 {
 105         /* allow this window to become the key focus window */
 106         set_flags (CAN_FOCUS);
 107
 108         Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_order_keys, this), gui_context());
 109
 110         scroller.set_can_default (true);
 111         set_default (scroller);
 112
 113         scroller_base.set_flags (Gtk::CAN_FOCUS);
 114         scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 115         scroller_base.set_name ("MixerWindow");
 116         scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 117         // add as last item of strip packer
 118         strip_packer.pack_end (scroller_base, true, true);
 119
 120         _group_tabs = new MixerGroupTabs (this);
 121         VBox* b = manage (new VBox);
 122         b->pack_start (*_group_tabs, PACK_SHRINK);
 123         b->pack_start (strip_packer);
 124         b->show_all ();
 125
 126         scroller.add (*b);
 127         scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 128
 129         setup_track_display ();
 130
 131         group_model = ListStore::create (group_columns);
 132         group_display.set_model (group_model);
 133         group_display.append_column (_("Group"), group_columns.text);
 134         group_display.append_column (_("Show"), group_columns.visible);
 135         group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
 136         group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
 137         group_display.get_column (0)->set_expand(true);
 138         group_display.get_column (1)->set_expand(false);
 139         group_display.set_name ("EditGroupList");
 140         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 141         group_display.set_reorderable (true);
 142         group_display.set_headers_visible (true);
 143         group_display.set_rules_hint (true);
 144         group_display.set_can_focus(false);
 145
 146         /* name is directly editable */
 147
 148         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
 149         name_cell->property_editable() = true;
 150         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 151
 152         /* use checkbox for the active column */
 153
 154         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (1));
 155         active_cell->property_activatable() = true;
 156         active_cell->property_radio() = false;
 157
 158         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 159         /* We use this to notice drag-and-drop reorders of the group list */
 160         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 161         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 162
 163         group_display_scroller.add (group_display);
 164         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 165
 166         HBox* route_group_display_button_box = manage (new HBox());
 167
 168         Button* route_group_add_button = manage (new Button ());
 169         Button* route_group_remove_button = manage (new Button ());
 170
 171         Widget* w;
 172
 173         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 174         w->show();
 175         route_group_add_button->add (*w);
 176
 177         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
 178         w->show();
 179         route_group_remove_button->add (*w);
 180
 181         route_group_display_button_box->set_homogeneous (true);
 182
 183         route_group_add_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_route_group));
 184         route_group_remove_button->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::remove_selected_route_group));
 185
 186         route_group_display_button_box->add (*route_group_add_button);
 187         route_group_display_button_box->add (*route_group_remove_button);
 188
 189         group_display_vbox.pack_start (group_display_scroller, true, true);
 190         group_display_vbox.pack_start (*route_group_display_button_box, false, false);
 191
 192         group_display_frame.set_name ("BaseFrame");
 193         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 194         group_display_frame.add (group_display_vbox);
 195
 196         rhs_pane1.pack1 (track_display_frame);
 197         rhs_pane1.pack2 (group_display_frame);
 198
 199         list_vpacker.pack_start (rhs_pane1, true, true);
 200
 201         global_hpacker.pack_start (scroller, true, true);
 202 #ifdef GTKOSX
 203         /* current gtk-quartz has dirty updates on borders like this one */
 204         global_hpacker.pack_start (out_packer, false, false, 0);
 205 #else
 206         global_hpacker.pack_start (out_packer, false, false, 12);
 207 #endif
 208         list_hpane.pack1(list_vpacker, false, true);
 209         list_hpane.pack2(global_hpacker, true, false);
 210
 211         rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 212                                                         static_cast<Gtk::Paned*> (&rhs_pane1)));
 213         list_hpane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
 214                                                          static_cast<Gtk::Paned*> (&list_hpane)));
 215
 216         global_vpacker.pack_start (list_hpane, true, true);
 217
 218         add (global_vpacker);
 219         set_name ("MixerWindow");
 220
 221         update_title ();
 222
 223         set_wmclass (X_("ardour_mixer"), PROGRAM_NAME);
 224
 225         signal_delete_event().connect (sigc::mem_fun (*this, &Mixer_UI::hide_window));
 226         add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
 227
 228         signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
 229
 230         route_group_display_button_box->show();
 231         route_group_add_button->show();
 232         route_group_remove_button->show();
 233
 234         global_hpacker.show();
 235         global_vpacker.show();
 236         scroller.show();
 237         scroller_base.show();
 238         scroller_hpacker.show();
 239         mixer_scroller_vpacker.show();
 240         list_vpacker.show();
 241         group_display_button_label.show();
 242         group_display_button.show();
 243         group_display_scroller.show();
 244         group_display_vbox.show();
 245         group_display_frame.show();
 246         rhs_pane1.show();
 247         strip_packer.show();
 248         out_packer.show();
 249         list_hpane.show();
 250         group_display.show();
 251
 252         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 253
 254 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 255         _plugin_selector = new PluginSelector (PluginManager::instance ());
 256 #endif
 257 }
 258
 259 Mixer_UI::~Mixer_UI ()
 260 {
 261         if (_monitor_section) {
 262                 delete _monitor_section;
 263         }
 264         delete _plugin_selector;
 265 }
 266
 267 void
 268 Mixer_UI::track_editor_selection ()
 269 {
 270         PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
 271 }
 272
 273
 274 void
 275 Mixer_UI::ensure_float (Window& win)
 276 {
 277         win.set_transient_for (*this);
 278 }
 279
 280 void
 281 Mixer_UI::show_window ()
 282 {
 283         present ();
 284         if (!_visible) {
 285                 set_window_pos_and_size ();
 286
 287                 /* show/hide group tabs as required */
 288                 parameter_changed ("show-group-tabs");
 289
 290                 /* now reset each strips width so the right widgets are shown */
 291                 MixerStrip* ms;
 292
 293                 TreeModel::Children rows = track_model->children();
 294                 TreeModel::Children::iterator ri;
 295
 296                 for (ri = rows.begin(); ri != rows.end(); ++ri) {
 297                         ms = (*ri)[track_columns.strip];
 298                         ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 299                         /* Fix visibility of mixer strip stuff */
 300                         ms->parameter_changed (X_("mixer-element-visibility"));
 301                 }
 302         }
 303
 304         /* force focus into main area */
 305         scroller_base.grab_focus ();
 306
 307         _visible = true;
 308 }
 309
 310 bool
 311 Mixer_UI::hide_window (GdkEventAny *ev)
 312 {
 313         get_window_pos_and_size ();
 314
 315         _visible = false;
 316         return just_hide_it(ev, static_cast<Gtk::Window *>(this));
 317 }
 318
 319
 320 void
 321 Mixer_UI::add_strips (RouteList& routes)
 322 {
 323         bool from_scratch = track_model->children().size() == 0;
 324         Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 325
 326         for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
 327                 boost::shared_ptr<Route> r = (*it)[track_columns.route];
 328
 329                 if (r->order_key() == (routes.front()->order_key() + routes.size())) {
 330                         insert_iter = it;
 331                         break;
 332                 }
 333         }
 334
 335         if(!from_scratch) {
 336                 _selection.clear_routes ();
 337         }
 338
 339         MixerStrip* strip;
 340
 341         try {
 342                 no_track_list_redisplay = true;
 343                 track_display.set_model (Glib::RefPtr<ListStore>());
 344
 345                 for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
 346                         boost::shared_ptr<Route> route = (*x);
 347
 348                         if (route->is_auditioner()) {
 349                                 continue;
 350                         }
 351
 352                         if (route->is_monitor()) {
 353
 354                                 if (!_monitor_section) {
 355                                         _monitor_section = new MonitorSection (_session);
 356
 357                                         XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 358                                         if (mnode) {
 359                                                 _monitor_section->tearoff().set_state (*mnode);
 360                                         }
 361                                 }
 362
 363                                 out_packer.pack_end (_monitor_section->tearoff(), false, false);
 364                                 _monitor_section->set_session (_session);
 365                                 _monitor_section->tearoff().show_all ();
 366
 367                                 route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 368
 369                                 /* no regular strip shown for control out */
 370
 371                                 continue;
 372                         }
 373
 374                         strip = new MixerStrip (*this, _session, route);
 375                         strips.push_back (strip);
 376
 377                         UIConfiguration::instance().get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 378
 379                         if (strip->width_owner() != strip) {
 380                                 strip->set_width_enum (_strip_width, this);
 381                         }
 382
 383                         show_strip (strip);
 384
 385                         TreeModel::Row row = *(track_model->insert(insert_iter));
 386                         row[track_columns.text] = route->name();
 387                         row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
 388                         row[track_columns.route] = route;
 389                         row[track_columns.strip] = strip;
 390
 391                         if (!from_scratch) {
 392                                 _selection.add (strip);
 393                         }
 394
 395                         route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
 396
 397                         strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 398                         strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 399                 }
 400
 401         } catch (...) {
 402         }
 403
 404         no_track_list_redisplay = false;
 405         track_display.set_model (track_model);
 406
 407         sync_order_keys_from_treeview ();
 408         redisplay_track_list ();
 409 }
 410
 411 void
 412 Mixer_UI::deselect_all_strip_processors ()
 413 {
 414         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 415                 (*i)->deselect_all_processors();
 416         }
 417 }
 418
 419 void
 420 Mixer_UI::select_none ()
 421 {
 422         _selection.clear_routes();
 423         deselect_all_strip_processors();
 424 }
 425
 426 void
 427 Mixer_UI::delete_processors ()
 428 {
 429         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 430                 (*i)->delete_processors();
 431         }
 432 }
 433
 434
 435 void
 436 Mixer_UI::remove_strip (MixerStrip* strip)
 437 {
 438         if (_session && _session->deletion_in_progress()) {
 439                 /* its all being taken care of */
 440                 return;
 441         }
 442
 443         TreeModel::Children rows = track_model->children();
 444         TreeModel::Children::iterator ri;
 445         list<MixerStrip *>::iterator i;
 446
 447         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 448                 strips.erase (i);
 449         }
 450
 451         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 452                 if ((*ri)[track_columns.strip] == strip) {
 453                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 454                         track_model->erase (ri);
 455                         break;
 456                 }
 457         }
 458 }
 459
 460 void
 461 Mixer_UI::reset_remote_control_ids ()
 462 {
 463         if (Config->get_remote_model() == UserOrdered || !_session || _session->deletion_in_progress()) {
 464                 return;
 465         }
 466
 467         TreeModel::Children rows = track_model->children();
 468
 469         if (rows.empty()) {
 470                 return;
 471         }
 472
 473         DEBUG_TRACE (DEBUG::OrderKeys, "mixer resets remote control ids after remote model change\n");
 474
 475         TreeModel::Children::iterator ri;
 476         bool rid_change = false;
 477         uint32_t rid = 1;
 478         uint32_t invisible_key = UINT32_MAX;
 479
 480         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 481
 482                 /* skip two special values */
 483
 484                 if (rid == Route::MasterBusRemoteControlID) {
 485                         rid++;
 486                 }
 487
 488                 if (rid == Route::MonitorBusRemoteControlID) {
 489                         rid++;
 490                 }
 491
 492                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 493                 bool visible = (*ri)[track_columns.visible];
 494
 495                 if (!route->is_master() && !route->is_monitor()) {
 496
 497                         uint32_t new_rid = (visible ? rid : invisible_key--);
 498
 499                         if (new_rid != route->remote_control_id()) {
 500                                 route->set_remote_control_id_explicit (new_rid);
 501                                 rid_change = true;
 502                         }
 503
 504                         if (visible) {
 505                                 rid++;
 506                         }
 507                 }
 508         }
 509
 510         if (rid_change) {
 511                 /* tell the world that we changed the remote control IDs */
 512                 _session->notify_remote_id_change ();
 513         }
 514 }
 515
 516 void
 517 Mixer_UI::sync_order_keys_from_treeview ()
 518 {
 519         if (ignore_reorder || !_session || _session->deletion_in_progress()) {
 520                 return;
 521         }
 522
 523         TreeModel::Children rows = track_model->children();
 524
 525         if (rows.empty()) {
 526                 return;
 527         }
 528
 529         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
 530
 531         TreeModel::Children::iterator ri;
 532         bool changed = false;
 533         bool rid_change = false;
 534         uint32_t order = 0;
 535         uint32_t rid = 1;
 536         uint32_t invisible_key = UINT32_MAX;
 537
 538         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 539                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 540                 bool visible = (*ri)[track_columns.visible];
 541
 542                 uint32_t old_key = route->order_key ();
 543
 544                 if (order != old_key) {
 545                         route->set_order_key (order);
 546                         changed = true;
 547                 }
 548
 549                 if ((Config->get_remote_model() == MixerOrdered) && !route->is_master() && !route->is_monitor()) {
 550
 551                         uint32_t new_rid = (visible ? rid : invisible_key--);
 552
 553                         if (new_rid != route->remote_control_id()) {
 554                                 route->set_remote_control_id_explicit (new_rid);
 555                                 rid_change = true;
 556                         }
 557
 558                         if (visible) {
 559                                 rid++;
 560                         }
 561
 562                 }
 563
 564                 ++order;
 565         }
 566
 567         if (changed) {
 568                 /* tell everyone that we changed the mixer sort keys */
 569                 _session->sync_order_keys ();
 570         }
 571
 572         if (rid_change) {
 573                 /* tell the world that we changed the remote control IDs */
 574                 _session->notify_remote_id_change ();
 575         }
 576 }
 577
 578 void
 579 Mixer_UI::sync_treeview_from_order_keys ()
 580 {
 581         if (!_session || _session->deletion_in_progress()) {
 582                 return;
 583         }
 584
 585         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from order keys.\n");
 586
 587         /* we could get here after either a change in the Mixer or Editor sort
 588          * order, but either way, the mixer order keys reflect the intended
 589          * order for the GUI, so reorder the treeview model to match it.
 590          */
 591
 592         vector<int> neworder;
 593         TreeModel::Children rows = track_model->children();
 594         uint32_t old_order = 0;
 595         bool changed = false;
 596
 597         if (rows.empty()) {
 598                 return;
 599         }
 600
 601         OrderKeySortedRoutes sorted_routes;
 602
 603         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 604                 boost::shared_ptr<Route> route = (*ri)[track_columns.route];
 605                 sorted_routes.push_back (RoutePlusOrderKey (route, old_order, route->order_key ()));
 606         }
 607
 608         SortByNewDisplayOrder cmp;
 609
 610         sort (sorted_routes.begin(), sorted_routes.end(), cmp);
 611         neworder.assign (sorted_routes.size(), 0);
 612
 613         uint32_t n = 0;
 614
 615         for (OrderKeySortedRoutes::iterator sr = sorted_routes.begin(); sr != sorted_routes.end(); ++sr, ++n) {
 616
 617                 neworder[n] = sr->old_display_order;
 618
 619                 if (sr->old_display_order != n) {
 620                         changed = true;
 621                 }
 622
 623                 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order for %1 from %2 to %3\n",
 624                                                                sr->route->name(), sr->old_display_order, n));
 625         }
 626
 627         if (changed) {
 628                 Unwinder<bool> uw (ignore_reorder, true);
 629                 track_model->reorder (neworder);
 630         }
 631
 632         redisplay_track_list ();
 633 }
 634
 635 void
 636 Mixer_UI::follow_editor_selection ()
 637 {
 638         if (_following_editor_selection) {
 639                 return;
 640         }
 641
 642         _following_editor_selection = true;
 643         _selection.block_routes_changed (true);
 644
 645         TrackSelection& s (PublicEditor::instance().get_selection().tracks);
 646
 647         _selection.clear_routes ();
 648
 649         for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
 650                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
 651                 if (rtav) {
 652                         MixerStrip* ms = strip_by_route (rtav->route());
 653                         if (ms) {
 654                                 _selection.add (ms);
 655                         }
 656                 }
 657         }
 658
 659         _following_editor_selection = false;
 660         _selection.block_routes_changed (false);
 661 }
 662
 663
 664 MixerStrip*
 665 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 666 {
 667         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 668                 if ((*i)->route() == r) {
 669                         return (*i);
 670                 }
 671         }
 672
 673         return 0;
 674 }
 675
 676 bool
 677 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 678 {
 679         if (ev->button == 1) {
 680                 if (_selection.selected (strip)) {
 681                         /* primary-click: toggle selection state of strip */
 682                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 683                                 _selection.remove (strip);
 684                         } else if (_selection.routes.size() > 1) {
 685                                 /* de-select others */
 686                                 _selection.set (strip);
 687                         }
 688                 } else {
 689                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 690                                 _selection.add (strip);
 691                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 692
 693                                 if (!_selection.selected(strip)) {
 694
 695                                         /* extend selection */
 696
 697                                         vector<MixerStrip*> tmp;
 698                                         bool accumulate = false;
 699                                         bool found_another = false;
 700
 701                                         tmp.push_back (strip);
 702
 703                                         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 704                                                 if ((*i) == strip) {
 705                                                         /* hit clicked strip, start accumulating till we hit the first
 706                                                            selected strip
 707                                                         */
 708                                                         if (accumulate) {
 709                                                                 /* done */
 710                                                                 break;
 711                                                         } else {
 712                                                                 accumulate = true;
 713                                                         }
 714                                                 } else if (_selection.selected (*i)) {
 715                                                         /* hit selected strip. if currently accumulating others,
 716                                                            we're done. if not accumulating others, start doing so.
 717                                                         */
 718                                                         found_another = true;
 719                                                         if (accumulate) {
 720                                                                 /* done */
 721                                                                 break;
 722                                                         } else {
 723                                                                 accumulate = true;
 724                                                         }
 725                                                 } else {
 726                                                         if (accumulate) {
 727                                                                 tmp.push_back (*i);
 728                                                         }
 729                                                 }
 730                                         }
 731
 732                                         if (found_another) {
 733                                                 for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
 734                                                         _selection.add (*i);
 735                                                 }
 736                                         } else
 737                                                 _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
 738                                 }
 739
 740                         } else {
 741                                 _selection.set (strip);
 742                         }
 743                 }
 744         }
 745
 746         return true;
 747 }
 748
 749 void
 750 Mixer_UI::set_session (Session* sess)
 751 {
 752         SessionHandlePtr::set_session (sess);
 753
 754         if (_plugin_selector) {
 755                 _plugin_selector->set_session (_session);
 756         }
 757
 758         _group_tabs->set_session (sess);
 759
 760         if (!_session) {
 761                 return;
 762         }
 763
 764         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
 765         set_state (*node);
 766
 767         update_title ();
 768
 769         initial_track_display ();
 770
 771         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
 772         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
 773         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 774         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
 775         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
 776         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 777         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 778
 779         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 780
 781         route_groups_changed ();
 782
 783         if (_visible) {
 784                 show_window();
 785         }
 786
 787         start_updating ();
 788 }
 789
 790 void
 791 Mixer_UI::session_going_away ()
 792 {
 793         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 794
 795         _in_group_rebuild_or_clear = true;
 796         group_model->clear ();
 797         _in_group_rebuild_or_clear = false;
 798
 799         _selection.clear ();
 800         track_model->clear ();
 801
 802         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 803                 delete (*i);
 804         }
 805
 806         if (_monitor_section) {
 807                 _monitor_section->tearoff().hide_visible ();
 808         }
 809
 810         strips.clear ();
 811
 812         stop_updating ();
 813
 814         SessionHandlePtr::session_going_away ();
 815
 816         _session = 0;
 817         update_title ();
 818 }
 819
 820 void
 821 Mixer_UI::track_visibility_changed (std::string const & path)
 822 {
 823         if (_session && _session->deletion_in_progress()) {
 824                 return;
 825         }
 826
 827         TreeIter iter;
 828
 829         if ((iter = track_model->get_iter (path))) {
 830                 MixerStrip* strip = (*iter)[track_columns.strip];
 831                 if (strip) {
 832                         bool visible = (*iter)[track_columns.visible];
 833
 834                         if (strip->set_marked_for_display (!visible)) {
 835                                 update_track_visibility ();
 836                         }
 837                 }
 838         }
 839 }
 840
 841 void
 842 Mixer_UI::update_track_visibility ()
 843 {
 844         TreeModel::Children rows = track_model->children();
 845         TreeModel::Children::iterator i;
 846
 847         {
 848                 Unwinder<bool> uw (no_track_list_redisplay, true);
 849
 850                 for (i = rows.begin(); i != rows.end(); ++i) {
 851                         MixerStrip *strip = (*i)[track_columns.strip];
 852                         (*i)[track_columns.visible] = strip->marked_for_display ();
 853                 }
 854
 855                 /* force route order keys catch up with visibility changes
 856                  */
 857
 858                 sync_order_keys_from_treeview ();
 859         }
 860
 861         redisplay_track_list ();
 862 }
 863
 864 void
 865 Mixer_UI::show_strip (MixerStrip* ms)
 866 {
 867         TreeModel::Children rows = track_model->children();
 868         TreeModel::Children::iterator i;
 869
 870         for (i = rows.begin(); i != rows.end(); ++i) {
 871
 872                 MixerStrip* strip = (*i)[track_columns.strip];
 873                 if (strip == ms) {
 874                         (*i)[track_columns.visible] = true;
 875                         redisplay_track_list ();
 876                         break;
 877                 }
 878         }
 879 }
 880
 881 void
 882 Mixer_UI::hide_strip (MixerStrip* ms)
 883 {
 884         TreeModel::Children rows = track_model->children();
 885         TreeModel::Children::iterator i;
 886
 887         for (i = rows.begin(); i != rows.end(); ++i) {
 888
 889                 MixerStrip* strip = (*i)[track_columns.strip];
 890                 if (strip == ms) {
 891                         (*i)[track_columns.visible] = false;
 892                         redisplay_track_list ();
 893                         break;
 894                 }
 895         }
 896 }
 897
 898 gint
 899 Mixer_UI::start_updating ()
 900 {
 901     fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
 902     return 0;
 903 }
 904
 905 gint
 906 Mixer_UI::stop_updating ()
 907 {
 908     fast_screen_update_connection.disconnect();
 909     return 0;
 910 }
 911
 912 void
 913 Mixer_UI::fast_update_strips ()
 914 {
 915         if (is_mapped () && _session) {
 916                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 917                         (*i)->fast_update ();
 918                 }
 919         }
 920 }
 921
 922 void
 923 Mixer_UI::set_all_strips_visibility (bool yn)
 924 {
 925         TreeModel::Children rows = track_model->children();
 926         TreeModel::Children::iterator i;
 927
 928         {
 929                 Unwinder<bool> uw (no_track_list_redisplay, true);
 930
 931                 for (i = rows.begin(); i != rows.end(); ++i) {
 932
 933                         TreeModel::Row row = (*i);
 934                         MixerStrip* strip = row[track_columns.strip];
 935
 936                         if (strip == 0) {
 937                                 continue;
 938                         }
 939
 940                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 941                                 continue;
 942                         }
 943
 944                         (*i)[track_columns.visible] = yn;
 945                 }
 946         }
 947
 948         redisplay_track_list ();
 949 }
 950
 951
 952 void
 953 Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
 954 {
 955         TreeModel::Children rows = track_model->children();
 956         TreeModel::Children::iterator i;
 957
 958         {
 959                 Unwinder<bool> uw (no_track_list_redisplay, true);
 960
 961                 for (i = rows.begin(); i != rows.end(); ++i) {
 962                         TreeModel::Row row = (*i);
 963                         MixerStrip* strip = row[track_columns.strip];
 964
 965                         if (strip == 0) {
 966                                 continue;
 967                         }
 968
 969                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
 970                                 continue;
 971                         }
 972
 973                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
 974                         boost::shared_ptr<MidiTrack> mt = strip->midi_track();
 975
 976                         switch (tracks) {
 977                         case 0:
 978                                 (*i)[track_columns.visible] = yn;
 979                                 break;
 980
 981                         case 1:
 982                                 if (at) { /* track */
 983                                         (*i)[track_columns.visible] = yn;
 984                                 }
 985                                 break;
 986
 987                         case 2:
 988                                 if (!at && !mt) { /* bus */
 989                                         (*i)[track_columns.visible] = yn;
 990                                 }
 991                                 break;
 992
 993                         case 3:
 994                                 if (mt) { /* midi-track */
 995                                         (*i)[track_columns.visible] = yn;
 996                                 }
 997                                 break;
 998                         }
 999                 }
1000         }
1001
1002         redisplay_track_list ();
1003 }
1004
1005 void
1006 Mixer_UI::hide_all_routes ()
1007 {
1008         set_all_strips_visibility (false);
1009 }
1010
1011 void
1012 Mixer_UI::show_all_routes ()
1013 {
1014         set_all_strips_visibility (true);
1015 }
1016
1017 void
1018 Mixer_UI::show_all_audiobus ()
1019 {
1020         set_all_audio_midi_visibility (2, true);
1021 }
1022 void
1023 Mixer_UI::hide_all_audiobus ()
1024 {
1025         set_all_audio_midi_visibility (2, false);
1026 }
1027
1028 void
1029 Mixer_UI::show_all_audiotracks()
1030 {
1031         set_all_audio_midi_visibility (1, true);
1032 }
1033 void
1034 Mixer_UI::hide_all_audiotracks ()
1035 {
1036         set_all_audio_midi_visibility (1, false);
1037 }
1038
1039 void
1040 Mixer_UI::show_all_miditracks()
1041 {
1042         set_all_audio_midi_visibility (3, true);
1043 }
1044 void
1045 Mixer_UI::hide_all_miditracks ()
1046 {
1047         set_all_audio_midi_visibility (3, false);
1048 }
1049
1050
1051 void
1052 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1053 {
1054         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1055         sync_order_keys_from_treeview ();
1056 }
1057
1058 void
1059 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1060 {
1061         /* this happens as the second step of a DnD within the treeview as well
1062            as when a row/route is actually deleted.
1063
1064            if it was a deletion then we have to force a redisplay because
1065            order keys may not have changed.
1066         */
1067
1068         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1069         sync_order_keys_from_treeview ();
1070
1071         if (_route_deletion_in_progress) {
1072                 redisplay_track_list ();
1073         }
1074 }
1075
1076 void
1077 Mixer_UI::redisplay_track_list ()
1078 {
1079         TreeModel::Children rows = track_model->children();
1080         TreeModel::Children::iterator i;
1081
1082         if (no_track_list_redisplay) {
1083                 return;
1084         }
1085
1086         for (i = rows.begin(); i != rows.end(); ++i) {
1087
1088                 MixerStrip* strip = (*i)[track_columns.strip];
1089
1090                 if (strip == 0) {
1091                         /* we're in the middle of changing a row, don't worry */
1092                         continue;
1093                 }
1094
1095                 bool const visible = (*i)[track_columns.visible];
1096
1097                 if (visible) {
1098                         strip->set_gui_property ("visible", true);
1099
1100                         if (strip->packed()) {
1101
1102                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1103                                         out_packer.reorder_child (*strip, -1);
1104
1105                                 } else {
1106                                         strip_packer.reorder_child (*strip, -1); /* put at end */
1107                                 }
1108
1109                         } else {
1110
1111                                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1112                                         out_packer.pack_start (*strip, false, false);
1113                                 } else {
1114                                         strip_packer.pack_start (*strip, false, false);
1115                                 }
1116                                 strip->set_packed (true);
1117                         }
1118
1119                 } else {
1120
1121                         strip->set_gui_property ("visible", false);
1122
1123                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1124                                 /* do nothing, these cannot be hidden */
1125                         } else {
1126                                 if (strip->packed()) {
1127                                         strip_packer.remove (*strip);
1128                                         strip->set_packed (false);
1129                                 }
1130                         }
1131                 }
1132         }
1133
1134         _group_tabs->set_dirty ();
1135 }
1136
1137 void
1138 Mixer_UI::strip_width_changed ()
1139 {
1140         _group_tabs->set_dirty ();
1141
1142 #ifdef GTKOSX
1143         TreeModel::Children rows = track_model->children();
1144         TreeModel::Children::iterator i;
1145         long order;
1146
1147         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1148                 MixerStrip* strip = (*i)[track_columns.strip];
1149
1150                 if (strip == 0) {
1151                         continue;
1152                 }
1153
1154                 bool visible = (*i)[track_columns.visible];
1155
1156                 if (visible) {
1157                         strip->queue_draw();
1158                 }
1159         }
1160 #endif
1161
1162 }
1163
1164 void
1165 Mixer_UI::initial_track_display ()
1166 {
1167         boost::shared_ptr<RouteList> routes = _session->get_routes();
1168         RouteList copy (*routes);
1169         ARDOUR::SignalOrderRouteSorter sorter;
1170
1171         copy.sort (sorter);
1172
1173         {
1174                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1175                 Unwinder<bool> uw2 (ignore_reorder, true);
1176
1177                 track_model->clear ();
1178                 add_strips (copy);
1179         }
1180
1181         _session->sync_order_keys ();
1182
1183         redisplay_track_list ();
1184 }
1185
1186 void
1187 Mixer_UI::show_track_list_menu ()
1188 {
1189         if (track_menu == 0) {
1190                 build_track_menu ();
1191         }
1192
1193         track_menu->popup (1, gtk_get_current_event_time());
1194 }
1195
1196 bool
1197 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1198 {
1199         if (Keyboard::is_context_menu_event (ev)) {
1200                 show_track_list_menu ();
1201                 return true;
1202         }
1203
1204         return false;
1205 }
1206
1207 void
1208 Mixer_UI::build_track_menu ()
1209 {
1210         using namespace Menu_Helpers;
1211         using namespace Gtk;
1212
1213         track_menu = new Menu;
1214         track_menu->set_name ("ArdourContextMenu");
1215         MenuList& items = track_menu->items();
1216
1217         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1218         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1219         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1220         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1221         items.push_back (MenuElem (_("Show All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1222         items.push_back (MenuElem (_("Hide All Audio Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1223         items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
1224         items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
1225
1226 }
1227
1228 void
1229 Mixer_UI::strip_property_changed (const PropertyChange& what_changed, MixerStrip* mx)
1230 {
1231         if (!what_changed.contains (ARDOUR::Properties::name)) {
1232                 return;
1233         }
1234
1235         ENSURE_GUI_THREAD (*this, &Mixer_UI::strip_name_changed, what_changed, mx)
1236
1237         TreeModel::Children rows = track_model->children();
1238         TreeModel::Children::iterator i;
1239
1240         for (i = rows.begin(); i != rows.end(); ++i) {
1241                 if ((*i)[track_columns.strip] == mx) {
1242                         (*i)[track_columns.text] = mx->route()->name();
1243                         return;
1244                 }
1245         }
1246
1247         error << _("track display list item for renamed strip not found!") << endmsg;
1248 }
1249
1250 bool
1251 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1252 {
1253         TreeModel::Path path;
1254         TreeViewColumn* column;
1255         int cellx;
1256         int celly;
1257
1258         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1259                 _group_tabs->get_menu(0)->popup (1, ev->time);
1260                 return true;
1261         }
1262
1263         TreeIter iter = group_model->get_iter (path);
1264         if (!iter) {
1265                 _group_tabs->get_menu(0)->popup (1, ev->time);
1266                 return true;
1267         }
1268
1269         RouteGroup* group = (*iter)[group_columns.group];
1270
1271         if (Keyboard::is_context_menu_event (ev)) {
1272                 _group_tabs->get_menu(group)->popup (1, ev->time);
1273                 return true;
1274         }
1275
1276         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1277         case 0:
1278                 if (Keyboard::is_edit_event (ev)) {
1279                         if (group) {
1280                                 // edit_route_group (group);
1281 #ifdef GTKOSX
1282                                 group_display.queue_draw();
1283 #endif
1284                                 return true;
1285                         }
1286                 }
1287                 break;
1288
1289         case 1:
1290         {
1291                 bool visible = (*iter)[group_columns.visible];
1292                 (*iter)[group_columns.visible] = !visible;
1293 #ifdef GTKOSX
1294                 group_display.queue_draw();
1295 #endif
1296                 return true;
1297         }
1298
1299         default:
1300                 break;
1301         }
1302
1303         return false;
1304  }
1305
1306 void
1307 Mixer_UI::activate_all_route_groups ()
1308 {
1309         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1310 }
1311
1312 void
1313 Mixer_UI::disable_all_route_groups ()
1314 {
1315         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1316 }
1317
1318 void
1319 Mixer_UI::route_groups_changed ()
1320 {
1321         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1322
1323         _in_group_rebuild_or_clear = true;
1324
1325         /* just rebuild the while thing */
1326
1327         group_model->clear ();
1328
1329 #if 0
1330         /* this is currently not used,
1331          * Mixer_UI::group_display_button_press() has a case for it,
1332          * and a commented edit_route_group() but that's n/a since 2011.
1333          *
1334          * This code is left as reminder that
1335          * row[group_columns.group] = 0 has special meaning.
1336          */
1337         {
1338                 TreeModel::Row row;
1339                 row = *(group_model->append());
1340                 row[group_columns.visible] = true;
1341                 row[group_columns.text] = (_("-all-"));
1342                 row[group_columns.group] = 0;
1343         }
1344 #endif
1345
1346         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1347
1348         _group_tabs->set_dirty ();
1349         _in_group_rebuild_or_clear = false;
1350 }
1351
1352 void
1353 Mixer_UI::new_route_group ()
1354 {
1355         RouteList rl;
1356
1357         _group_tabs->run_new_group_dialog (rl);
1358 }
1359
1360 void
1361 Mixer_UI::remove_selected_route_group ()
1362 {
1363         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1364         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1365
1366         if (rows.empty()) {
1367                 return;
1368         }
1369
1370         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1371         TreeIter iter;
1372
1373         /* selection mode is single, so rows.begin() is it */
1374
1375         if ((iter = group_model->get_iter (*i))) {
1376
1377                 RouteGroup* rg = (*iter)[group_columns.group];
1378
1379                 if (rg) {
1380                         _session->remove_route_group (*rg);
1381                 }
1382         }
1383 }
1384
1385 void
1386 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1387 {
1388         if (in_group_row_change) {
1389                 return;
1390         }
1391
1392         /* force an update of any mixer strips that are using this group,
1393            otherwise mix group names don't change in mixer strips
1394         */
1395
1396         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1397                 if ((*i)->route_group() == group) {
1398                         (*i)->route_group_changed();
1399                 }
1400         }
1401
1402         TreeModel::iterator i;
1403         TreeModel::Children rows = group_model->children();
1404         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1405
1406         in_group_row_change = true;
1407
1408         for (i = rows.begin(); i != rows.end(); ++i) {
1409                 if ((*i)[group_columns.group] == group) {
1410                         (*i)[group_columns.visible] = !group->is_hidden ();
1411                         (*i)[group_columns.text] = group->name ();
1412                         break;
1413                 }
1414         }
1415
1416         in_group_row_change = false;
1417
1418         if (change.contains (Properties::name)) {
1419                 _group_tabs->set_dirty ();
1420         }
1421
1422         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1423                 if ((*j)->route_group() == group) {
1424                         if (group->is_hidden ()) {
1425                                 hide_strip (*j);
1426                         } else {
1427                                 show_strip (*j);
1428                         }
1429                 }
1430         }
1431 }
1432
1433 void
1434 Mixer_UI::show_mixer_list (bool yn)
1435 {
1436         if (yn) {
1437                 list_vpacker.show ();
1438
1439                 //if user wants to show the pane, we should make sure that it is wide enough to be visible
1440                 int width = list_hpane.get_position();
1441                 if (width < 40)
1442                         list_hpane.set_position(40);
1443         } else {
1444                 list_vpacker.hide ();
1445         }
1446
1447         _show_mixer_list = yn;
1448 }
1449
1450
1451 void
1452 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
1453 {
1454         RouteGroup* group;
1455         TreeIter iter;
1456
1457         if ((iter = group_model->get_iter (path))) {
1458
1459                 if ((group = (*iter)[group_columns.group]) == 0) {
1460                         return;
1461                 }
1462
1463                 if (new_text != group->name()) {
1464                         group->set_name (new_text);
1465                 }
1466         }
1467 }
1468
1469 void
1470 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
1471 {
1472         RouteGroup* group;
1473
1474         if (in_group_row_change) {
1475                 return;
1476         }
1477
1478         if ((group = (*iter)[group_columns.group]) == 0) {
1479                 return;
1480         }
1481
1482         std::string name = (*iter)[group_columns.text];
1483
1484         if (name != group->name()) {
1485                 group->set_name (name);
1486         }
1487
1488         bool hidden = !(*iter)[group_columns.visible];
1489
1490         if (hidden != group->is_hidden ()) {
1491                 group->set_hidden (hidden, this);
1492         }
1493 }
1494
1495 /** Called when a group model row is deleted, but also when the model is
1496  *  reordered by a user drag-and-drop; the latter is what we are
1497  *  interested in here.
1498  */
1499 void
1500 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
1501 {
1502         if (_in_group_rebuild_or_clear) {
1503                 return;
1504         }
1505
1506         /* Re-write the session's route group list so that the new order is preserved */
1507
1508         list<RouteGroup*> new_list;
1509
1510         Gtk::TreeModel::Children children = group_model->children();
1511         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
1512                 RouteGroup* g = (*i)[group_columns.group];
1513                 if (g) {
1514                         new_list.push_back (g);
1515                 }
1516         }
1517
1518         _session->reorder_route_groups (new_list);
1519 }
1520
1521
1522 void
1523 Mixer_UI::add_route_group (RouteGroup* group)
1524 {
1525         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
1526         bool focus = false;
1527
1528         in_group_row_change = true;
1529
1530         TreeModel::Row row = *(group_model->append());
1531         row[group_columns.visible] = !group->is_hidden ();
1532         row[group_columns.group] = group;
1533         if (!group->name().empty()) {
1534                 row[group_columns.text] = group->name();
1535         } else {
1536                 row[group_columns.text] = _("unnamed");
1537                 focus = true;
1538         }
1539
1540         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
1541
1542         if (focus) {
1543                 TreeViewColumn* col = group_display.get_column (0);
1544                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (0));
1545                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
1546         }
1547
1548         _group_tabs->set_dirty ();
1549
1550         in_group_row_change = false;
1551 }
1552
1553 bool
1554 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
1555 {
1556         using namespace Menu_Helpers;
1557
1558         if (Keyboard::is_context_menu_event (ev)) {
1559                 ARDOUR_UI::instance()->add_route (this);
1560                 return true;
1561         }
1562
1563         return false;
1564 }
1565
1566 void
1567 Mixer_UI::set_strip_width (Width w, bool save)
1568 {
1569         _strip_width = w;
1570
1571         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1572                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
1573         }
1574 }
1575
1576 void
1577 Mixer_UI::set_window_pos_and_size ()
1578 {
1579         resize (m_width, m_height);
1580         move (m_root_x, m_root_y);
1581 }
1582
1583         void
1584 Mixer_UI::get_window_pos_and_size ()
1585 {
1586         get_position(m_root_x, m_root_y);
1587         get_size(m_width, m_height);
1588 }
1589
1590 int
1591 Mixer_UI::set_state (const XMLNode& node)
1592 {
1593         const XMLProperty* prop;
1594         XMLNode* geometry;
1595
1596         m_width = default_width;
1597         m_height = default_height;
1598         m_root_x = 1;
1599         m_root_y = 1;
1600
1601         if ((geometry = find_named_node (node, "geometry")) != 0) {
1602
1603                 XMLProperty* prop;
1604
1605                 if ((prop = geometry->property("x_size")) == 0) {
1606                         prop = geometry->property ("x-size");
1607                 }
1608                 if (prop) {
1609                         m_width = atoi(prop->value());
1610                 }
1611                 if ((prop = geometry->property("y_size")) == 0) {
1612                         prop = geometry->property ("y-size");
1613                 }
1614                 if (prop) {
1615                         m_height = atoi(prop->value());
1616                 }
1617
1618                 if ((prop = geometry->property ("x_pos")) == 0) {
1619                         prop = geometry->property ("x-pos");
1620                 }
1621                 if (prop) {
1622                         m_root_x = atoi (prop->value());
1623
1624                 }
1625                 if ((prop = geometry->property ("y_pos")) == 0) {
1626                         prop = geometry->property ("y-pos");
1627                 }
1628                 if (prop) {
1629                         m_root_y = atoi (prop->value());
1630                 }
1631         }
1632
1633         set_window_pos_and_size ();
1634
1635         if ((prop = node.property ("narrow-strips"))) {
1636                 if (string_is_affirmative (prop->value())) {
1637                         set_strip_width (Narrow);
1638                 } else {
1639                         set_strip_width (Wide);
1640                 }
1641         }
1642
1643         if ((prop = node.property ("show-mixer"))) {
1644                 if (string_is_affirmative (prop->value())) {
1645                        _visible = true;
1646                 }
1647         }
1648
1649         if ((prop = node.property ("maximised"))) {
1650                 bool yn = string_is_affirmative (prop->value());
1651                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
1652                 assert (act);
1653                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1654                 bool fs = tact && tact->get_active();
1655                 if (yn ^ fs) {
1656                         ActionManager::do_action ("Common",
1657                                         "ToggleMaximalMixer");
1658                 }
1659         }
1660
1661         if ((prop = node.property ("show-mixer-list"))) {
1662                 bool yn = string_is_affirmative (prop->value());
1663                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMixerList"));
1664                 assert (act);
1665                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
1666
1667                 /* do it twice to force the change */
1668                 tact->set_active (!yn);
1669                 tact->set_active (yn);
1670         }
1671
1672
1673         return 0;
1674 }
1675
1676 XMLNode&
1677 Mixer_UI::get_state (void)
1678 {
1679         XMLNode* node = new XMLNode ("Mixer");
1680
1681         if (is_realized()) {
1682                 Glib::RefPtr<Gdk::Window> win = get_window();
1683
1684                 get_window_pos_and_size ();
1685
1686                 XMLNode* geometry = new XMLNode ("geometry");
1687                 char buf[32];
1688                 snprintf(buf, sizeof(buf), "%d", m_width);
1689                 geometry->add_property(X_("x_size"), string(buf));
1690                 snprintf(buf, sizeof(buf), "%d", m_height);
1691                 geometry->add_property(X_("y_size"), string(buf));
1692                 snprintf(buf, sizeof(buf), "%d", m_root_x);
1693                 geometry->add_property(X_("x_pos"), string(buf));
1694                 snprintf(buf, sizeof(buf), "%d", m_root_y);
1695                 geometry->add_property(X_("y_pos"), string(buf));
1696
1697                 // written only for compatibility, they are not used.
1698                 snprintf(buf, sizeof(buf), "%d", 0);
1699                 geometry->add_property(X_("x_off"), string(buf));
1700                 snprintf(buf, sizeof(buf), "%d", 0);
1701                 geometry->add_property(X_("y_off"), string(buf));
1702
1703                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&rhs_pane1)->gobj()));
1704                 geometry->add_property(X_("mixer_rhs_pane1_pos"), string(buf));
1705                 snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&list_hpane)->gobj()));
1706                 geometry->add_property(X_("mixer_list_hpane_pos"), string(buf));
1707
1708                 node->add_child_nocopy (*geometry);
1709         }
1710
1711         node->add_property ("narrow-strips", _strip_width == Narrow ? "yes" : "no");
1712
1713         node->add_property ("show-mixer", _visible ? "yes" : "no");
1714
1715         node->add_property ("show-mixer-list", _show_mixer_list ? "yes" : "no");
1716
1717         node->add_property ("maximised", _maximised ? "yes" : "no");
1718
1719         return *node;
1720 }
1721
1722
1723 void
1724 Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
1725 {
1726         int pos;
1727         XMLProperty* prop = 0;
1728         char buf[32];
1729         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
1730         XMLNode* geometry;
1731         int height;
1732         static int32_t done[3] = { 0, 0, 0 };
1733
1734         height = default_height;
1735
1736         if ((geometry = find_named_node (*node, "geometry")) != 0) {
1737
1738                 if ((prop = geometry->property ("y_size")) == 0) {
1739                         prop = geometry->property ("y-size");
1740                 }
1741                 if (prop) {
1742                         height = atoi (prop->value());
1743                 }
1744         }
1745
1746         if (which == static_cast<Gtk::Paned*> (&rhs_pane1)) {
1747
1748                 if (done[0]) {
1749                         return;
1750                 }
1751
1752                 if (!geometry || (prop = geometry->property("mixer-rhs-pane1-pos")) == 0) {
1753                         pos = height / 3;
1754                         snprintf (buf, sizeof(buf), "%d", pos);
1755                 } else {
1756                         pos = atoi (prop->value());
1757                 }
1758
1759                 if ((done[0] = GTK_WIDGET(rhs_pane1.gobj())->allocation.height > pos)) {
1760                         rhs_pane1.set_position (pos);
1761                 }
1762
1763         } else if (which == static_cast<Gtk::Paned*> (&list_hpane)) {
1764
1765                 if (done[2]) {
1766                         return;
1767                 }
1768
1769                 if (!geometry || (prop = geometry->property("mixer-list-hpane-pos")) == 0) {
1770                         pos = 75;
1771                         snprintf (buf, sizeof(buf), "%d", pos);
1772                 } else {
1773                         pos = max (36, atoi (prop->value ()));
1774                 }
1775
1776                 if ((done[2] = GTK_WIDGET(list_hpane.gobj())->allocation.width > pos)) {
1777                         list_hpane.set_position (pos);
1778                 }
1779         }
1780 }
1781 void
1782 Mixer_UI::scroll_left ()
1783 {
1784         if (!scroller.get_hscrollbar()) return;
1785         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1786         /* stupid GTK: can't rely on clamping across versions */
1787         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
1788 }
1789
1790 void
1791 Mixer_UI::scroll_right ()
1792 {
1793         if (!scroller.get_hscrollbar()) return;
1794         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1795         /* stupid GTK: can't rely on clamping across versions */
1796         scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
1797 }
1798
1799 bool
1800 Mixer_UI::on_key_press_event (GdkEventKey* ev)
1801 {
1802         /* focus widget gets first shot, then bindings, otherwise
1803            forward to main window
1804         */
1805
1806         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1807                 return true;
1808         }
1809
1810         KeyboardKey k (ev->state, ev->keyval);
1811
1812         if (bindings.activate (k, Bindings::Press)) {
1813                 return true;
1814         }
1815
1816         return forward_key_press (ev);
1817 }
1818
1819 bool
1820 Mixer_UI::on_key_release_event (GdkEventKey* ev)
1821 {
1822         if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
1823                 return true;
1824         }
1825
1826         KeyboardKey k (ev->state, ev->keyval);
1827
1828         if (bindings.activate (k, Bindings::Release)) {
1829                 return true;
1830         }
1831
1832         /* don't forward releases */
1833
1834         return true;
1835 }
1836
1837 bool
1838 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
1839 {
1840         switch (ev->direction) {
1841         case GDK_SCROLL_LEFT:
1842                 scroll_left ();
1843                 return true;
1844         case GDK_SCROLL_UP:
1845                 if (ev->state & Keyboard::TertiaryModifier) {
1846                         scroll_left ();
1847                         return true;
1848                 }
1849                 return false;
1850
1851         case GDK_SCROLL_RIGHT:
1852                 scroll_right ();
1853                 return true;
1854
1855         case GDK_SCROLL_DOWN:
1856                 if (ev->state & Keyboard::TertiaryModifier) {
1857                         scroll_right ();
1858                         return true;
1859                 }
1860                 return false;
1861         }
1862
1863         return false;
1864 }
1865
1866
1867 void
1868 Mixer_UI::parameter_changed (string const & p)
1869 {
1870         if (p == "show-group-tabs") {
1871                 bool const s = _session->config.get_show_group_tabs ();
1872                 if (s) {
1873                         _group_tabs->show ();
1874                 } else {
1875                         _group_tabs->hide ();
1876                 }
1877         } else if (p == "default-narrow_ms") {
1878                 bool const s = UIConfiguration::instance().get_default_narrow_ms ();
1879                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1880                         (*i)->set_width_enum (s ? Narrow : Wide, this);
1881                 }
1882         } else if (p == "remote-model") {
1883                 reset_remote_control_ids ();
1884         }
1885 }
1886
1887 void
1888 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
1889 {
1890         g->set_active (a, this);
1891 }
1892
1893 PluginSelector*
1894 Mixer_UI::plugin_selector()
1895 {
1896 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
1897         if (!_plugin_selector)
1898                 _plugin_selector = new PluginSelector (PluginManager::instance());
1899 #endif
1900
1901         return _plugin_selector;
1902 }
1903
1904 void
1905 Mixer_UI::setup_track_display ()
1906 {
1907         track_model = ListStore::create (track_columns);
1908         track_display.set_model (track_model);
1909         track_display.append_column (_("Strips"), track_columns.text);
1910         track_display.append_column (_("Show"), track_columns.visible);
1911         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
1912         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
1913         track_display.get_column (0)->set_expand(true);
1914         track_display.get_column (1)->set_expand(false);
1915         track_display.get_column (0)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
1916         track_display.set_name (X_("EditGroupList"));
1917         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
1918         track_display.set_reorderable (true);
1919         track_display.set_headers_visible (true);
1920         track_display.set_can_focus(false);
1921
1922         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
1923         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
1924
1925         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
1926         track_list_visible_cell->property_activatable() = true;
1927         track_list_visible_cell->property_radio() = false;
1928         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
1929
1930         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
1931
1932         track_display_scroller.add (track_display);
1933         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
1934
1935         VBox* v = manage (new VBox);
1936         v->show ();
1937         v->pack_start (track_display_scroller, true, true);
1938
1939         Button* b = manage (new Button);
1940         b->show ();
1941         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
1942         w->show ();
1943         b->add (*w);
1944
1945         b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
1946
1947         v->pack_start (*b, false, false);
1948
1949         track_display_frame.set_name("BaseFrame");
1950         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
1951         track_display_frame.add (*v);
1952
1953         track_display_scroller.show();
1954         track_display_frame.show();
1955         track_display.show();
1956 }
1957
1958 void
1959 Mixer_UI::new_track_or_bus ()
1960 {
1961         ARDOUR_UI::instance()->add_route (this);
1962 }
1963
1964
1965 void
1966 Mixer_UI::update_title ()
1967 {
1968         if (_session) {
1969                 string n;
1970
1971                 if (_session->snap_name() != _session->name()) {
1972                         n = _session->snap_name ();
1973                 } else {
1974                         n = _session->name ();
1975                 }
1976
1977                 if (_session->dirty ()) {
1978                         n = "*" + n;
1979                 }
1980
1981                 WindowTitle title (n);
1982                 title += S_("Window|Mixer");
1983                 title += Glib::get_application_name ();
1984                 set_title (title.get_string());
1985
1986         } else {
1987
1988                 WindowTitle title (S_("Window|Mixer"));
1989                 title += Glib::get_application_name ();
1990                 set_title (title.get_string());
1991         }
1992 }
1993
1994 MixerStrip*
1995 Mixer_UI::strip_by_x (int x)
1996 {
1997         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
1998                 int x1, x2, y;
1999
2000                 (*i)->translate_coordinates (*this, 0, 0, x1, y);
2001                 x2 = x1 + (*i)->get_width();
2002
2003                 if (x >= x1 && x <= x2) {
2004                         return (*i);
2005                 }
2006         }
2007
2008         return 0;
2009 }
2010
2011 void
2012 Mixer_UI::set_route_targets_for_operation ()
2013 {
2014         _route_targets.clear ();
2015
2016         if (!_selection.empty()) {
2017                 _route_targets = _selection.routes;
2018                 return;
2019         }
2020
2021 //  removed "implicit" selections of strips, after discussion on IRC
2022
2023 }
2024
2025 void
2026 Mixer_UI::monitor_section_going_away ()
2027 {
2028         if (_monitor_section) {
2029                 out_packer.remove (_monitor_section->tearoff());
2030                 _monitor_section->set_session (0);
2031         }
2032 }
2033
2034 void
2035 Mixer_UI::toggle_midi_input_active (bool flip_others)
2036 {
2037         boost::shared_ptr<RouteList> rl (new RouteList);
2038         bool onoff = false;
2039
2040         set_route_targets_for_operation ();
2041
2042         for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
2043                 boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
2044
2045                 if (mt) {
2046                         rl->push_back ((*r)->route());
2047                         onoff = !mt->input_active();
2048                 }
2049         }
2050
2051         _session->set_exclusive_input_active (rl, onoff, flip_others);
2052 }
2053
2054 void
2055 Mixer_UI::maximise_mixer_space ()
2056 {
2057         if (_maximised) {
2058                 return;
2059         }
2060
2061         fullscreen ();
2062
2063         _maximised = true;
2064 }
2065
2066 void
2067 Mixer_UI::restore_mixer_space ()
2068 {
2069         if (!_maximised) {
2070                 return;
2071         }
2072
2073         unfullscreen();
2074
2075         _maximised = false;
2076 }