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