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 <boost/foreach.hpp>
  29
  30 #include <glibmm/threads.h>
  31
  32 #include <gtkmm/accelmap.h>
  33 #include <gtkmm/stock.h>
  34
  35 #include "pbd/convert.h"
  36 #include "pbd/stacktrace.h"
  37 #include "pbd/unwind.h"
  38
  39 #include "ardour/amp.h"
  40 #include "ardour/debug.h"
  41 #include "ardour/audio_track.h"
  42 #include "ardour/midi_track.h"
  43 #include "ardour/plugin_manager.h"
  44 #include "ardour/route_group.h"
  45 #include "ardour/selection.h"
  46 #include "ardour/session.h"
  47 #include "ardour/vca.h"
  48 #include "ardour/vca_manager.h"
  49
  50 #include "gtkmm2ext/gtk_ui.h"
  51 #include "gtkmm2ext/keyboard.h"
  52 #include "gtkmm2ext/utils.h"
  53 #include "gtkmm2ext/window_title.h"
  54 #include "gtkmm2ext/doi.h"
  55
  56 #include "widgets/tearoff.h"
  57
  58 #include "keyboard.h"
  59 #include "mixer_ui.h"
  60 #include "mixer_strip.h"
  61 #include "monitor_section.h"
  62 #include "plugin_selector.h"
  63 #include "public_editor.h"
  64 #include "mouse_cursors.h"
  65 #include "ardour_ui.h"
  66 #include "utils.h"
  67 #include "route_sorter.h"
  68 #include "actions.h"
  69 #include "gui_thread.h"
  70 #include "mixer_group_tabs.h"
  71 #include "route_sorter.h"
  72 #include "timers.h"
  73 #include "ui_config.h"
  74 #include "vca_master_strip.h"
  75
  76 #include "pbd/i18n.h"
  77
  78 using namespace ARDOUR;
  79 using namespace ARDOUR_UI_UTILS;
  80 using namespace PBD;
  81 using namespace Gtk;
  82 using namespace Glib;
  83 using namespace Gtkmm2ext;
  84 using namespace std;
  85
  86 using PBD::atoi;
  87 using PBD::Unwinder;
  88
  89 Mixer_UI* Mixer_UI::_instance = 0;
  90
  91 Mixer_UI*
  92 Mixer_UI::instance ()
  93 {
  94         if (!_instance) {
  95                 _instance  = new Mixer_UI;
  96         }
  97
  98         return _instance;
  99 }
 100
 101 Mixer_UI::Mixer_UI ()
 102         : Tabbable (_content, _("Mixer"))
 103         , no_track_list_redisplay (false)
 104         , in_group_row_change (false)
 105         , track_menu (0)
 106         , _plugin_selector (0)
 107         , _strip_width (UIConfiguration::instance().get_default_narrow_ms() ? Narrow : Wide)
 108         , _spill_scroll_position (0)
 109         , ignore_reorder (false)
 110         , _in_group_rebuild_or_clear (false)
 111         , _route_deletion_in_progress (false)
 112         , _maximised (false)
 113         , _strip_selection_change_without_scroll (false)
 114         , _selection (*this, *this)
 115 {
 116         load_bindings ();
 117         register_actions ();
 118         _content.set_data ("ardour-bindings", bindings);
 119
 120         PresentationInfo::Change.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::presentation_info_changed, this, _1), gui_context());
 121
 122         scroller.set_can_default (true);
 123         // set_default (scroller);
 124
 125         scroller_base.set_flags (Gtk::CAN_FOCUS);
 126         scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 127         scroller_base.set_name ("MixerWindow");
 128         scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 129
 130         /* set up drag-n-drop */
 131         vector<TargetEntry> target_table;
 132         target_table.push_back (TargetEntry ("PluginFavoritePtr"));
 133         scroller_base.drag_dest_set (target_table);
 134         scroller_base.signal_drag_data_received().connect (sigc::mem_fun(*this, &Mixer_UI::scroller_drag_data_received));
 135
 136         /* create a button to add VCA strips ... will get packed in redisplay_track_list() */
 137         Widget* w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 138         w->show ();
 139         add_vca_button.add (*w);
 140         add_vca_button.set_can_focus(false);
 141         add_vca_button.signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
 142
 143         /* create a button to add mixer strips */
 144         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
 145         w->show ();
 146         add_button.add (*w);
 147         add_button.set_can_focus(false);
 148         add_button.signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
 149
 150         /* add as last item of strip packer */
 151         strip_packer.pack_end (scroller_base, true, true);
 152         strip_packer.pack_end (add_button, false, false);
 153
 154 #ifdef MIXBUS
 155         /* create a drop-shadow at the end of the mixer strips */
 156         mb_shadow.set_size_request( 4, -1 );
 157         mb_shadow.set_name("EditorWindow");
 158         mb_shadow.show();
 159         strip_packer.pack_end (mb_shadow, false, false);
 160 #endif
 161
 162         _group_tabs = new MixerGroupTabs (this);
 163         VBox* b = manage (new VBox);
 164         b->set_spacing (0);
 165         b->set_border_width (0);
 166         b->pack_start (*_group_tabs, PACK_SHRINK);
 167         b->pack_start (strip_packer);
 168         b->show_all ();
 169         b->signal_scroll_event().connect (sigc::mem_fun (*this, &Mixer_UI::on_scroll_event), false);
 170
 171         scroller.add (*b);
 172         scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 173
 174         setup_track_display ();
 175
 176         group_model = ListStore::create (group_columns);
 177         group_display.set_model (group_model);
 178         group_display.append_column (_("Show"), group_columns.visible);
 179         group_display.append_column (_("Group"), group_columns.text);
 180         group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
 181         group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
 182         group_display.get_column (0)->set_expand(false);
 183         group_display.get_column (1)->set_expand(true);
 184         group_display.get_column (1)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
 185         group_display.set_name ("EditGroupList");
 186         group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 187         group_display.set_reorderable (true);
 188         group_display.set_headers_visible (true);
 189         group_display.set_rules_hint (true);
 190         group_display.set_can_focus(false);
 191
 192         /* name is directly editable */
 193
 194         CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (1));
 195         name_cell->property_editable() = true;
 196         name_cell->signal_edited().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_name_edit));
 197
 198         /* use checkbox for the active column */
 199
 200         CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(group_display.get_column_cell_renderer (0));
 201         active_cell->property_activatable() = true;
 202         active_cell->property_radio() = false;
 203
 204         group_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_change));
 205         /* We use this to notice drag-and-drop reorders of the group list */
 206         group_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::route_group_row_deleted));
 207         group_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::group_display_button_press), false);
 208
 209         group_display_scroller.add (group_display);
 210         group_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 211
 212
 213         group_display_vbox.pack_start (group_display_scroller, true, true);
 214
 215         group_display_frame.set_name ("BaseFrame");
 216         group_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 217         group_display_frame.add (group_display_vbox);
 218
 219         list<TargetEntry> target_list;
 220         target_list.push_back (TargetEntry ("PluginPresetPtr"));
 221
 222         favorite_plugins_model = PluginTreeStore::create (favorite_plugins_columns);
 223         favorite_plugins_display.set_model (favorite_plugins_model);
 224         favorite_plugins_display.append_column (_("Favorite Plugins"), favorite_plugins_columns.name);
 225         favorite_plugins_display.set_name ("EditGroupList");
 226         favorite_plugins_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
 227         favorite_plugins_display.set_reorderable (false);
 228         favorite_plugins_display.set_headers_visible (true);
 229         favorite_plugins_display.set_rules_hint (true);
 230         favorite_plugins_display.set_can_focus (false);
 231         favorite_plugins_display.add_object_drag (favorite_plugins_columns.plugin.index(), "PluginFavoritePtr");
 232         favorite_plugins_display.set_drag_column (favorite_plugins_columns.name.index());
 233         favorite_plugins_display.add_drop_targets (target_list);
 234         favorite_plugins_display.signal_row_activated().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_activated));
 235         favorite_plugins_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::plugin_row_button_press), false);
 236         favorite_plugins_display.signal_drop.connect (sigc::mem_fun (*this, &Mixer_UI::plugin_drop));
 237         favorite_plugins_display.signal_row_expanded().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 238         favorite_plugins_display.signal_row_collapsed().connect (sigc::mem_fun (*this, &Mixer_UI::save_favorite_ui_state));
 239         if (UIConfiguration::instance().get_use_tooltips()) {
 240                 favorite_plugins_display.set_tooltip_column (0);
 241         }
 242         favorite_plugins_model->signal_row_has_child_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::sync_treeview_favorite_ui_state));
 243
 244         favorite_plugins_scroller.add (favorite_plugins_display);
 245         favorite_plugins_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 246
 247         favorite_plugins_frame.set_name ("BaseFrame");
 248         favorite_plugins_frame.set_shadow_type (Gtk::SHADOW_IN);
 249         favorite_plugins_frame.add (favorite_plugins_vbox);
 250
 251         favorite_plugins_vbox.pack_start (favorite_plugins_scroller, true, true);
 252         favorite_plugins_vbox.pack_start (favorite_plugins_tag_combo, false, false);
 253         favorite_plugins_tag_combo.signal_changed().connect (sigc::mem_fun (*this, &Mixer_UI::tag_combo_changed));
 254
 255         rhs_pane1.add (favorite_plugins_frame);
 256         rhs_pane1.add (track_display_frame);
 257
 258         rhs_pane2.add (rhs_pane1);
 259         rhs_pane2.add (group_display_frame);
 260
 261         list_vpacker.pack_start (rhs_pane2, true, true);
 262
 263         vca_label_bar.set_size_request (-1, 16 + 1); /* must match height in GroupTabs::set_size_request()  + 1 border px*/
 264         vca_vpacker.pack_start (vca_label_bar, false, false);
 265
 266         vca_scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 267         vca_scroller_base.set_name (X_("MixerWindow"));
 268         vca_scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::masters_scroller_button_release), false);
 269
 270         vca_scroller.add (vca_hpacker);
 271         vca_scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 272         vca_scroller.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
 273
 274         vca_vpacker.pack_start (vca_scroller, true, true);
 275
 276         inner_pane.add (scroller);
 277         inner_pane.add (vca_vpacker);
 278
 279         global_hpacker.pack_start (inner_pane, true, true);
 280         global_hpacker.pack_start (out_packer, false, false);
 281
 282         list_hpane.set_check_divider_position (true);
 283         list_hpane.add (list_vpacker);
 284         list_hpane.add (global_hpacker);
 285         list_hpane.set_child_minsize (list_vpacker, 30);
 286
 287         XMLNode const * settings = ARDOUR_UI::instance()->mixer_settings();
 288         float fract;
 289
 290         if (!settings || !settings->get_property ("mixer-rhs-pane1-pos", fract) || fract > 1.0) {
 291                 fract = 0.6f;
 292         }
 293         rhs_pane1.set_divider (0, fract);
 294
 295         if (!settings || !settings->get_property ("mixer-rhs-pane2-pos", fract) || fract > 1.0) {
 296                 fract = 0.7f;
 297         }
 298         rhs_pane2.set_divider (0, fract);
 299
 300         if (!settings || !settings->get_property ("mixer-list-hpane-pos", fract) || fract > 1.0) {
 301                 fract = 0.2f;
 302         }
 303         list_hpane.set_divider (0, fract);
 304
 305         if (!settings || !settings->get_property ("mixer-inner-pane-pos", fract) || fract > 1.0) {
 306                 fract = 0.8f;
 307         }
 308         inner_pane.set_divider (0, fract);
 309
 310         rhs_pane1.set_drag_cursor (*PublicEditor::instance().cursors()->expand_up_down);
 311         rhs_pane2.set_drag_cursor (*PublicEditor::instance().cursors()->expand_up_down);
 312         list_hpane.set_drag_cursor (*PublicEditor::instance().cursors()->expand_left_right);
 313         inner_pane.set_drag_cursor (*PublicEditor::instance().cursors()->expand_left_right);
 314
 315         _content.pack_start (list_hpane, true, true);
 316
 317         update_title ();
 318
 319         _content.show ();
 320         _content.set_name ("MixerWindow");
 321
 322         global_hpacker.show();
 323         scroller.show();
 324         scroller_base.show();
 325         scroller_hpacker.show();
 326         mixer_scroller_vpacker.show();
 327         list_vpacker.show();
 328         group_display_button_label.show();
 329         group_display_scroller.show();
 330         favorite_plugins_scroller.show();
 331         group_display_vbox.show();
 332         group_display_frame.show();
 333         favorite_plugins_frame.show();
 334         rhs_pane1.show();
 335         rhs_pane2.show();
 336         strip_packer.show();
 337         inner_pane.show();
 338         vca_scroller.show();
 339         vca_vpacker.show();
 340         vca_hpacker.show();
 341         vca_label_bar.show();
 342         vca_label.show();
 343         vca_scroller_base.show();
 344         out_packer.show();
 345         list_hpane.show();
 346         group_display.show();
 347         favorite_plugins_display.show();
 348         add_button.show ();
 349
 350         XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
 351         if (mnode) {
 352                 _monitor_section.tearoff().set_state (*mnode);
 353         }
 354
 355         MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 356         VCAMasterStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_master, this, _1), gui_context());
 357
 358         /* handle escape */
 359
 360         ARDOUR_UI::instance()->Escape.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::escape, this), gui_context());
 361
 362 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
 363         _plugin_selector = new PluginSelector (PluginManager::instance ());
 364 #else
 365 #error implement deferred Plugin-Favorite list
 366 #endif
 367
 368         PluginManager::instance ().PluginListChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::plugin_list_changed, this), gui_context());
 369         PluginManager::instance ().PluginStatusChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::plugin_list_changed, this), gui_context());
 370         ARDOUR::Plugin::PresetsChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::refill_favorite_plugins, this), gui_context());
 371 }
 372
 373 Mixer_UI::~Mixer_UI ()
 374 {
 375         monitor_section_detached ();
 376
 377         delete _plugin_selector;
 378         delete track_menu;
 379 }
 380
 381 struct MixerStripSorter {
 382         bool operator() (const MixerStrip* ms_a, const MixerStrip* ms_b)
 383         {
 384                 boost::shared_ptr<ARDOUR::Stripable> const& a = ms_a->stripable ();
 385                 boost::shared_ptr<ARDOUR::Stripable> const& b = ms_b->stripable ();
 386                 return ARDOUR::Stripable::Sorter(true)(a, b);
 387         }
 388 };
 389
 390
 391 void
 392 Mixer_UI::escape ()
 393 {
 394         select_none ();
 395 }
 396
 397 void
 398 Mixer_UI::tag_combo_changed ()
 399 {
 400         refill_favorite_plugins();
 401 }
 402
 403 Gtk::Window*
 404 Mixer_UI::use_own_window (bool and_fill_it)
 405 {
 406         bool new_window = !own_window();
 407
 408         Gtk::Window* win = Tabbable::use_own_window (and_fill_it);
 409
 410         if (win && new_window) {
 411                 win->set_name ("MixerWindow");
 412                 ARDOUR_UI::instance()->setup_toplevel_window (*win, _("Mixer"), this);
 413                 win->signal_event().connect (sigc::bind (sigc::ptr_fun (&Keyboard::catch_user_event_for_pre_dialog_focus), win));
 414                 win->set_data ("ardour-bindings", bindings);
 415                 update_title ();
 416                 if (!win->get_focus()) {
 417                         /* set focus widget to something, anything */
 418                         win->set_focus (scroller);
 419                 }
 420         }
 421
 422         return win;
 423 }
 424
 425 void
 426 Mixer_UI::show_window ()
 427 {
 428         Tabbable::show_window ();
 429
 430         /* show/hide group tabs as required */
 431         parameter_changed ("show-group-tabs");
 432
 433         /* now reset each strips width so the right widgets are shown */
 434
 435         TreeModel::Children rows = track_model->children();
 436         TreeModel::Children::iterator ri;
 437
 438         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 439                 AxisView* av = (*ri)[stripable_columns.strip];
 440                 MixerStrip* ms = dynamic_cast<MixerStrip*> (av);
 441                 if (!ms) {
 442                         continue;
 443                 }
 444                 ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
 445                 /* Fix visibility of mixer strip stuff */
 446                 ms->parameter_changed (X_("mixer-element-visibility"));
 447         }
 448
 449         /* force focus into main area */
 450         scroller_base.grab_focus ();
 451 }
 452
 453 void
 454 Mixer_UI::remove_master (VCAMasterStrip* vms)
 455 {
 456         if (_session && _session->deletion_in_progress()) {
 457                 /* its all being taken care of */
 458                 return;
 459         }
 460
 461         TreeModel::Children rows = track_model->children();
 462         TreeModel::Children::iterator ri;
 463
 464         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 465                 if ((*ri)[stripable_columns.strip] == vms) {
 466                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 467                         track_model->erase (ri);
 468                         break;
 469                 }
 470         }
 471 }
 472
 473 bool
 474 Mixer_UI::masters_scroller_button_release (GdkEventButton* ev)
 475 {
 476         using namespace Menu_Helpers;
 477
 478         if (Keyboard::is_context_menu_event (ev)) {
 479                 ARDOUR_UI::instance()->add_route ();
 480                 return true;
 481         }
 482
 483         return false;
 484 }
 485
 486 void
 487 Mixer_UI::new_masters_created ()
 488 {
 489         ActionManager::get_toggle_action ("Mixer", "ToggleVCAPane")->set_active (true);
 490 }
 491
 492 void
 493 Mixer_UI::add_masters (VCAList& vlist)
 494 {
 495         StripableList sl;
 496
 497         for (VCAList::iterator v = vlist.begin(); v != vlist.end(); ++v) {
 498                 sl.push_back (boost::dynamic_pointer_cast<Stripable> (*v));
 499         }
 500
 501         add_stripables (sl);
 502 }
 503
 504 void
 505 Mixer_UI::add_routes (RouteList& rlist)
 506 {
 507         StripableList sl;
 508
 509         for (RouteList::iterator r = rlist.begin(); r != rlist.end(); ++r) {
 510                 sl.push_back (*r);
 511         }
 512
 513         add_stripables (sl);
 514 }
 515
 516 void
 517 Mixer_UI::add_stripables (StripableList& slist)
 518 {
 519         Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 520         bool from_scratch = (track_model->children().size() == 0);
 521         uint32_t nroutes = 0;
 522
 523         slist.sort (Stripable::Sorter());
 524
 525         for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
 526                 boost::shared_ptr<Stripable> s = (*it)[stripable_columns.stripable];
 527
 528                 if (!s) {
 529                         continue;
 530                 }
 531
 532                 nroutes++;
 533
 534                 // XXX what does this special case do?
 535                 if (s->presentation_info().order() == (slist.front()->presentation_info().order() + slist.size())) {
 536                         insert_iter = it;
 537                         break;
 538                 }
 539         }
 540
 541         MixerStrip* strip;
 542
 543         try {
 544                 PBD::Unwinder<bool> uw (no_track_list_redisplay, true);
 545
 546                 track_display.set_model (Glib::RefPtr<ListStore>());
 547
 548                 for (StripableList::iterator s = slist.begin(); s != slist.end(); ++s) {
 549
 550                         boost::shared_ptr<Route> route;
 551                         boost::shared_ptr<VCA> vca;
 552
 553                         if ((vca  = boost::dynamic_pointer_cast<VCA> (*s))) {
 554
 555                                 VCAMasterStrip* vms = new VCAMasterStrip (_session, vca);
 556
 557                                 TreeModel::Row row = *(track_model->append());
 558
 559                                 row[stripable_columns.text] = vca->name();
 560                                 row[stripable_columns.visible] = vms->marked_for_display ();
 561                                 row[stripable_columns.strip] = vms;
 562                                 row[stripable_columns.stripable] = vca;
 563
 564                                 vms->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::vca_button_release_event), vms));
 565
 566                         } else if ((route = boost::dynamic_pointer_cast<Route> (*s))) {
 567
 568                                 if (route->is_auditioner()) {
 569                                         continue;
 570                                 }
 571
 572                                 if (route->is_monitor()) {
 573
 574                                         out_packer.pack_end (_monitor_section.tearoff(), false, false);
 575                                         _monitor_section.set_session (_session);
 576                                         _monitor_section.tearoff().show_all ();
 577
 578                                         _monitor_section.tearoff().Detach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_detached));
 579                                         _monitor_section.tearoff().Attach.connect (sigc::mem_fun(*this, &Mixer_UI::monitor_section_attached));
 580
 581                                         if (_monitor_section.tearoff().torn_off()) {
 582                                                 monitor_section_detached ();
 583                                         } else {
 584                                                 monitor_section_attached ();
 585                                         }
 586
 587                                         route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
 588
 589                                         /* no regular strip shown for control out */
 590
 591                                         continue;
 592                                 }
 593
 594                                 strip = new MixerStrip (*this, _session, route);
 595                                 strips.push_back (strip);
 596
 597                                 UIConfiguration::instance().get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
 598
 599                                 if (strip->width_owner() != strip) {
 600                                         strip->set_width_enum (_strip_width, this);
 601                                 }
 602
 603                                 show_strip (strip);
 604
 605                                 if (route->is_master()) {
 606
 607                                         out_packer.pack_start (*strip, false, false);
 608                                         strip->set_packed (true);
 609
 610                                 } else {
 611
 612                                         TreeModel::Row row = *(track_model->insert (insert_iter));
 613
 614                                         row[stripable_columns.text] = route->name();
 615                                         row[stripable_columns.visible] = strip->marked_for_display();
 616                                         row[stripable_columns.stripable] = route;
 617                                         row[stripable_columns.strip] = strip;
 618                                 }
 619
 620                                 strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
 621                                 strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
 622                         }
 623
 624                         (*s)->presentation_info().PropertyChanged.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::stripable_property_changed, this, _1, boost::weak_ptr<Stripable>(*s)), gui_context());
 625                         (*s)->PropertyChanged.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::stripable_property_changed, this, _1, boost::weak_ptr<Stripable>(*s)), gui_context());
 626                 }
 627
 628         } catch (const std::exception& e) {
 629                 error << string_compose (_("Error adding GUI elements for new tracks/busses %1"), e.what()) << endmsg;
 630         }
 631
 632         track_display.set_model (track_model);
 633
 634         /* catch up on selection state, which we left to the editor to set */
 635         sync_treeview_from_presentation_info (PropertyChange (Properties::selected));
 636
 637         if (!from_scratch) {
 638                 sync_presentation_info_from_treeview ();
 639         }
 640
 641         redisplay_track_list ();
 642 }
 643
 644 void
 645 Mixer_UI::deselect_all_strip_processors ()
 646 {
 647         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 648                 (*i)->deselect_all_processors();
 649         }
 650 }
 651
 652 void
 653 Mixer_UI::select_none ()
 654 {
 655         _selection.clear_routes();
 656         deselect_all_strip_processors();
 657 }
 658
 659 void
 660 Mixer_UI::select_next_strip ()
 661 {
 662         deselect_all_strip_processors();
 663         _session->selection().select_next_stripable (true, false);
 664 }
 665
 666 void
 667 Mixer_UI::select_prev_strip ()
 668 {
 669         deselect_all_strip_processors();
 670         _session->selection().select_prev_stripable (true, false);
 671 }
 672
 673 void
 674 Mixer_UI::delete_processors ()
 675 {
 676         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
 677                 (*i)->delete_processors();
 678         }
 679 }
 680
 681
 682 void
 683 Mixer_UI::remove_strip (MixerStrip* strip)
 684 {
 685         if (_session && _session->deletion_in_progress()) {
 686                 /* its all being taken care of */
 687                 return;
 688         }
 689
 690         TreeModel::Children rows = track_model->children();
 691         TreeModel::Children::iterator ri;
 692         list<MixerStrip *>::iterator i;
 693
 694         if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 695                 strips.erase (i);
 696         }
 697
 698         PBD::Unwinder<bool> uwi (ignore_reorder, true);
 699
 700         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 701                 if ((*ri)[stripable_columns.strip] == strip) {
 702                         PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
 703                         track_model->erase (ri);
 704                         break;
 705                 }
 706         }
 707 }
 708
 709 void
 710 Mixer_UI::presentation_info_changed (PropertyChange const & what_changed)
 711 {
 712         if (what_changed.contains (Properties::selected)) {
 713                 _selection.presentation_info_changed (what_changed);
 714         }
 715
 716         PropertyChange soh;
 717         soh.add (Properties::selected);
 718         soh.add (Properties::order);
 719         soh.add (Properties::hidden);
 720
 721         if (what_changed.contains (soh)) {
 722                 sync_treeview_from_presentation_info (what_changed);
 723         }
 724 }
 725
 726 void
 727 Mixer_UI::sync_presentation_info_from_treeview ()
 728 {
 729         if (ignore_reorder || !_session || _session->deletion_in_progress()) {
 730                 return;
 731         }
 732
 733         TreeModel::Children rows = track_model->children();
 734
 735         if (rows.empty()) {
 736                 return;
 737         }
 738
 739         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync presentation info from treeview\n");
 740
 741         TreeModel::Children::iterator ri;
 742         bool change = false;
 743
 744         PresentationInfo::order_t master_key = _session->master_order_key ();
 745         PresentationInfo::order_t order = 0;
 746
 747         PresentationInfo::ChangeSuspender cs;
 748
 749         for (ri = rows.begin(); ri != rows.end(); ++ri) {
 750                 bool visible = (*ri)[stripable_columns.visible];
 751                 boost::shared_ptr<Stripable> stripable = (*ri)[stripable_columns.stripable];
 752
 753 #ifndef NDEBUG // these should not exist in the mixer's treeview
 754                 if (!stripable) {
 755                         assert (0);
 756                         continue;
 757                 }
 758                 if (stripable->is_monitor() || stripable->is_auditioner()) {
 759                         assert (0);
 760                         continue;
 761                 }
 762                 if (stripable->is_master()) {
 763                         assert (0);
 764                         continue;
 765                 }
 766 #endif
 767
 768                 stripable->presentation_info().set_hidden (!visible);
 769
 770                 // leave master where it is.
 771                 if (order == master_key) {
 772                         ++order;
 773                 }
 774
 775                 if (order != stripable->presentation_info().order()) {
 776                         stripable->set_presentation_order (order);
 777                         change = true;
 778                 }
 779                 ++order;
 780         }
 781
 782         change |= _session->ensure_stripable_sort_order ();
 783
 784         if (change) {
 785                 DEBUG_TRACE (DEBUG::OrderKeys, "... notify PI change from mixer GUI\n");
 786                 _session->set_dirty();
 787         }
 788 }
 789
 790 void
 791 Mixer_UI::sync_treeview_from_presentation_info (PropertyChange const & what_changed)
 792 {
 793         if (!_session || _session->deletion_in_progress()) {
 794                 return;
 795         }
 796
 797         DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from presentation info.\n");
 798
 799         /* we could get here after either a change in the Mixer or Editor sort
 800          * order, but either way, the mixer order keys reflect the intended
 801          * order for the GUI, so reorder the treeview model to match it.
 802          */
 803
 804         vector<int> neworder;
 805         TreeModel::Children rows = track_model->children();
 806         uint32_t old_order = 0;
 807         bool changed = false;
 808
 809         if (rows.empty()) {
 810                 return;
 811         }
 812
 813         TreeOrderKeys sorted;
 814         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
 815                 boost::shared_ptr<Stripable> stripable = (*ri)[stripable_columns.stripable];
 816                 sorted.push_back (TreeOrderKey (old_order, stripable));
 817         }
 818
 819         TreeOrderKeySorter cmp;
 820
 821         sort (sorted.begin(), sorted.end(), cmp);
 822         neworder.assign (sorted.size(), 0);
 823
 824         uint32_t n = 0;
 825
 826         for (TreeOrderKeys::iterator sr = sorted.begin(); sr != sorted.end(); ++sr, ++n) {
 827
 828                 neworder[n] = sr->old_display_order;
 829
 830                 if (sr->old_display_order != n) {
 831                         changed = true;
 832                 }
 833         }
 834
 835         if (changed) {
 836                 Unwinder<bool> uw (ignore_reorder, true);
 837                 track_model->reorder (neworder);
 838         }
 839
 840         if (what_changed.contains (Properties::selected)) {
 841
 842                 PresentationInfo::ChangeSuspender cs;
 843
 844                 for (list<MixerStrip *>::const_iterator i = strips.begin(); i != strips.end(); ++i) {
 845                         boost::shared_ptr<Stripable> stripable = (*i)->stripable();
 846                         if (stripable && stripable->is_selected()) {
 847                                 _selection.add (*i);
 848                         } else {
 849                                 _selection.remove (*i);
 850                         }
 851                 }
 852
 853                 if (!_selection.axes.empty() && !PublicEditor::instance().track_selection_change_without_scroll () && !_strip_selection_change_without_scroll) {
 854                         move_stripable_into_view ((*_selection.axes.begin())->stripable());
 855                 }
 856
 857                 TreeModel::Children rows = track_model->children();
 858                 for (TreeModel::Children::const_iterator i = rows.begin(); i != rows.end(); ++i) {
 859                         AxisView* av = (*i)[stripable_columns.strip];
 860                         VCAMasterStrip* vms = dynamic_cast<VCAMasterStrip*> (av);
 861                         if (!vms) {
 862                                 continue;
 863                         }
 864                         if (vms->vca() && vms->vca()->is_selected()) {
 865                                 _selection.add (vms);
 866                         } else {
 867                                 _selection.remove (vms);
 868                         }
 869                 }
 870         }
 871
 872         redisplay_track_list ();
 873 }
 874
 875
 876 MixerStrip*
 877 Mixer_UI::strip_by_route (boost::shared_ptr<Route> r) const
 878 {
 879         for (list<MixerStrip *>::const_iterator i = strips.begin(); i != strips.end(); ++i) {
 880                 if ((*i)->route() == r) {
 881                         return (*i);
 882                 }
 883         }
 884
 885         return 0;
 886 }
 887
 888 MixerStrip*
 889 Mixer_UI::strip_by_stripable (boost::shared_ptr<Stripable> s) const
 890 {
 891         for (list<MixerStrip *>::const_iterator i = strips.begin(); i != strips.end(); ++i) {
 892                 if ((*i)->stripable() == s) {
 893                         return (*i);
 894                 }
 895         }
 896
 897         return 0;
 898 }
 899
 900 AxisView*
 901 Mixer_UI::axis_view_by_stripable (boost::shared_ptr<Stripable> s) const
 902 {
 903         for (list<MixerStrip *>::const_iterator i = strips.begin(); i != strips.end(); ++i) {
 904                 if ((*i)->stripable() == s) {
 905                         return (*i);
 906                 }
 907         }
 908
 909         TreeModel::Children rows = track_model->children();
 910         for (TreeModel::Children::const_iterator i = rows.begin(); i != rows.end(); ++i) {
 911                 AxisView* av = (*i)[stripable_columns.strip];
 912                 VCAMasterStrip* vms = dynamic_cast<VCAMasterStrip*> (av);
 913                 if (vms && vms->stripable () == s) {
 914                         return av;
 915                 }
 916         }
 917
 918         return 0;
 919 }
 920
 921 AxisView*
 922 Mixer_UI::axis_view_by_control (boost::shared_ptr<AutomationControl> c) const
 923 {
 924         for (list<MixerStrip *>::const_iterator i = strips.begin(); i != strips.end(); ++i) {
 925                 if ((*i)->control() == c) {
 926                         return (*i);
 927                 }
 928         }
 929
 930         return 0;
 931 }
 932
 933 bool
 934 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 935 {
 936         /* Selecting a mixer-strip may also select grouped-tracks, and
 937          * presentation_info_changed() being emitted and
 938          * _selection.axes.begin() is being moved into view. This may
 939          * effectively move the track that was clicked-on out of view.
 940          *
 941          * So here only the track that is actually clicked-on is moved into
 942          * view (in case it's partially visible)
 943          */
 944         PBD::Unwinder<bool> uw (_strip_selection_change_without_scroll, true);
 945         move_stripable_into_view (strip->stripable());
 946
 947         if (ev->button == 1) {
 948                 if (_selection.selected (strip)) {
 949                         /* primary-click: toggle selection state of strip */
 950                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 951                                 _selection.remove (strip, true);
 952                         } else if (_selection.axes.size() > 1) {
 953                                 /* de-select others */
 954                                 _selection.set (strip);
 955                         }
 956                         PublicEditor& pe = PublicEditor::instance();
 957                         TimeAxisView* tav = pe.time_axis_view_from_stripable (strip->stripable());
 958                         if (tav) {
 959                                 pe.set_selected_mixer_strip (*tav);
 960                         }
 961                 } else {
 962                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 963                                 _selection.add (strip, true);
 964                         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 965
 966                                 /* extend selection */
 967
 968                                 vector<MixerStrip*> tmp;
 969                                 bool accumulate = false;
 970                                 bool found_another = false;
 971
 972                                 strips.sort (MixerStripSorter());
 973
 974                                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
 975                                         MixerStrip* ms = *i;
 976                                         assert (ms);
 977
 978                                         if (ms == strip) {
 979                                                 /* hit clicked strip, start accumulating till we hit the first
 980                                                    selected strip
 981                                                 */
 982                                                 if (accumulate) {
 983                                                         /* done */
 984                                                         break;
 985                                                 } else {
 986                                                         accumulate = true;
 987                                                 }
 988                                         } else if (_selection.selected (ms)) {
 989                                                 /* hit selected strip. if currently accumulating others,
 990                                                    we're done. if not accumulating others, start doing so.
 991                                                 */
 992                                                 found_another = true;
 993                                                 if (accumulate) {
 994                                                         /* done */
 995                                                         break;
 996                                                 } else {
 997                                                         accumulate = true;
 998                                                 }
 999                                         } else {
1000                                                 if (accumulate) {
1001                                                         tmp.push_back (ms);
1002                                                 }
1003                                         }
1004                                 }
1005
1006                                 tmp.push_back (strip);
1007
1008                                 if (found_another) {
1009                                         PresentationInfo::ChangeSuspender cs;
1010                                         for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
1011                                                 _selection.add (*i, true);
1012                                         }
1013                                 } else {
1014                                         _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
1015                                 }
1016                         } else {
1017                                 _selection.set (strip);
1018                         }
1019                 }
1020         }
1021
1022         return true;
1023 }
1024
1025 bool
1026 Mixer_UI::vca_button_release_event (GdkEventButton *ev, VCAMasterStrip *strip)
1027 {
1028         _selection.set (strip);
1029         return true;
1030 }
1031
1032 void
1033 Mixer_UI::set_session (Session* sess)
1034 {
1035         SessionHandlePtr::set_session (sess);
1036         _monitor_section.set_session (sess);
1037
1038         if (_plugin_selector) {
1039                 _plugin_selector->set_session (_session);
1040         }
1041
1042         _group_tabs->set_session (sess);
1043
1044         if (!_session) {
1045                 _selection.clear ();
1046                 return;
1047         }
1048
1049         refill_favorite_plugins();
1050         refill_tag_combo();
1051
1052         XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
1053         set_state (*node, 0);
1054
1055         update_title ();
1056
1057         initial_track_display ();
1058
1059         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_routes, this, _1), gui_context());
1060         _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
1061         _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
1062         _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
1063         _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
1064         _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
1065         _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
1066
1067         _session->vca_manager().VCAAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_masters, this, _1), gui_context());
1068         _session->vca_manager().VCACreated.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::new_masters_created, this), gui_context());
1069
1070         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
1071
1072         route_groups_changed ();
1073
1074         if (_visible) {
1075                 show_window();
1076         }
1077
1078         /* catch up on selection state, etc. */
1079
1080         PropertyChange sc;
1081         sc.add (Properties::selected);
1082         _selection.presentation_info_changed (sc);
1083
1084         start_updating ();
1085 }
1086
1087 void
1088 Mixer_UI::session_going_away ()
1089 {
1090         ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
1091
1092         _in_group_rebuild_or_clear = true;
1093         group_model->clear ();
1094         _in_group_rebuild_or_clear = false;
1095
1096         _selection.clear ();
1097         track_model->clear ();
1098
1099         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1100                 delete (*i);
1101         }
1102
1103         _monitor_section.tearoff().hide_visible ();
1104
1105         monitor_section_detached ();
1106
1107         strips.clear ();
1108
1109         stop_updating ();
1110
1111         SessionHandlePtr::session_going_away ();
1112
1113         _session = 0;
1114         update_title ();
1115 }
1116
1117 void
1118 Mixer_UI::track_visibility_changed (std::string const & path)
1119 {
1120         if (_session && _session->deletion_in_progress()) {
1121                 return;
1122         }
1123
1124         TreeIter iter;
1125
1126         if ((iter = track_model->get_iter (path))) {
1127
1128                 AxisView* av = (*iter)[stripable_columns.strip];
1129                 bool visible = (*iter)[stripable_columns.visible];
1130
1131                 if (av->set_marked_for_display (!visible)) {
1132                         update_track_visibility ();
1133                 }
1134         }
1135 }
1136
1137 void
1138 Mixer_UI::update_track_visibility ()
1139 {
1140         TreeModel::Children rows = track_model->children();
1141         TreeModel::Children::iterator i;
1142
1143         {
1144                 Unwinder<bool> uw (no_track_list_redisplay, true);
1145
1146                 for (i = rows.begin(); i != rows.end(); ++i) {
1147                         AxisView* av = (*i)[stripable_columns.strip];
1148                         (*i)[stripable_columns.visible] = av->marked_for_display ();
1149                 }
1150
1151                 /* force presentation catch up with visibility changes
1152                  */
1153
1154                 sync_presentation_info_from_treeview ();
1155         }
1156
1157         redisplay_track_list ();
1158 }
1159
1160 void
1161 Mixer_UI::show_strip (MixerStrip* ms)
1162 {
1163         TreeModel::Children rows = track_model->children();
1164         TreeModel::Children::iterator i;
1165
1166         for (i = rows.begin(); i != rows.end(); ++i) {
1167
1168                 AxisView* av = (*i)[stripable_columns.strip];
1169                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1170                 if (strip == ms) {
1171                         (*i)[stripable_columns.visible] = true;
1172                         av->set_marked_for_display (true);
1173                         update_track_visibility ();
1174                         break;
1175                 }
1176         }
1177 }
1178
1179 void
1180 Mixer_UI::hide_strip (MixerStrip* ms)
1181 {
1182         TreeModel::Children rows = track_model->children();
1183         TreeModel::Children::iterator i;
1184
1185         for (i = rows.begin(); i != rows.end(); ++i) {
1186
1187                 AxisView* av = (*i)[stripable_columns.strip];
1188                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1189                 if (strip == ms) {
1190                         (*i)[stripable_columns.visible] = false;
1191                         av->set_marked_for_display (false);
1192                         update_track_visibility ();
1193                         break;
1194                 }
1195         }
1196 }
1197
1198 gint
1199 Mixer_UI::start_updating ()
1200 {
1201         fast_screen_update_connection = Timers::super_rapid_connect (sigc::mem_fun(*this, &Mixer_UI::fast_update_strips));
1202         return 0;
1203 }
1204
1205 gint
1206 Mixer_UI::stop_updating ()
1207 {
1208         fast_screen_update_connection.disconnect();
1209         return 0;
1210 }
1211
1212 void
1213 Mixer_UI::fast_update_strips ()
1214 {
1215         if (_content.is_mapped () && _session) {
1216                 for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1217                         (*i)->fast_update ();
1218                 }
1219         }
1220 }
1221
1222 void
1223 Mixer_UI::set_all_strips_visibility (bool yn)
1224 {
1225         TreeModel::Children rows = track_model->children();
1226         TreeModel::Children::iterator i;
1227
1228         {
1229                 Unwinder<bool> uw (no_track_list_redisplay, true);
1230
1231                 for (i = rows.begin(); i != rows.end(); ++i) {
1232
1233                         AxisView* av = (*i)[stripable_columns.strip];
1234                         MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1235
1236                         if (!strip) {
1237                                 continue;
1238                         }
1239
1240                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1241                                 continue;
1242                         }
1243
1244                         (*i)[stripable_columns.visible] = yn;
1245                 }
1246         }
1247
1248         redisplay_track_list ();
1249 }
1250
1251
1252 void
1253 Mixer_UI::set_all_audio_midi_visibility (int tracks, bool yn)
1254 {
1255         TreeModel::Children rows = track_model->children();
1256         TreeModel::Children::iterator i;
1257
1258         {
1259                 Unwinder<bool> uw (no_track_list_redisplay, true);
1260
1261                 for (i = rows.begin(); i != rows.end(); ++i) {
1262
1263                         AxisView* av = (*i)[stripable_columns.strip];
1264                         MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1265
1266                         if (!strip) {
1267                                 continue;
1268                         }
1269
1270                         if (strip->route()->is_master() || strip->route()->is_monitor()) {
1271                                 continue;
1272                         }
1273
1274                         boost::shared_ptr<AudioTrack> at = strip->audio_track();
1275                         boost::shared_ptr<MidiTrack> mt = strip->midi_track();
1276
1277                         switch (tracks) {
1278                         case 0:
1279                                 (*i)[stripable_columns.visible] = yn;
1280                                 break;
1281
1282                         case 1:
1283                                 if (at) { /* track */
1284                                         (*i)[stripable_columns.visible] = yn;
1285                                 }
1286                                 break;
1287
1288                         case 2:
1289                                 if (!at && !mt) { /* bus */
1290                                         (*i)[stripable_columns.visible] = yn;
1291                                 }
1292                                 break;
1293
1294                         case 3:
1295                                 if (mt) { /* midi-track */
1296                                         (*i)[stripable_columns.visible] = yn;
1297                                 }
1298                                 break;
1299                         }
1300                 }
1301         }
1302
1303         redisplay_track_list ();
1304 }
1305
1306 void
1307 Mixer_UI::hide_all_routes ()
1308 {
1309         set_all_strips_visibility (false);
1310 }
1311
1312 void
1313 Mixer_UI::show_all_routes ()
1314 {
1315         set_all_strips_visibility (true);
1316 }
1317
1318 void
1319 Mixer_UI::show_all_audiobus ()
1320 {
1321         set_all_audio_midi_visibility (2, true);
1322 }
1323 void
1324 Mixer_UI::hide_all_audiobus ()
1325 {
1326         set_all_audio_midi_visibility (2, false);
1327 }
1328
1329 void
1330 Mixer_UI::show_all_audiotracks()
1331 {
1332         set_all_audio_midi_visibility (1, true);
1333 }
1334 void
1335 Mixer_UI::hide_all_audiotracks ()
1336 {
1337         set_all_audio_midi_visibility (1, false);
1338 }
1339
1340 void
1341 Mixer_UI::show_all_miditracks()
1342 {
1343         set_all_audio_midi_visibility (3, true);
1344 }
1345 void
1346 Mixer_UI::hide_all_miditracks ()
1347 {
1348         set_all_audio_midi_visibility (3, false);
1349 }
1350
1351 void
1352 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
1353 {
1354         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
1355         sync_presentation_info_from_treeview ();
1356 }
1357
1358 void
1359 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
1360 {
1361         /* this happens as the second step of a DnD within the treeview as well
1362            as when a row/route is actually deleted.
1363
1364            if it was a deletion then we have to force a redisplay because
1365            order keys may not have changed.
1366         */
1367
1368         DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
1369         sync_presentation_info_from_treeview ();
1370
1371         if (_route_deletion_in_progress) {
1372                 redisplay_track_list ();
1373         }
1374 }
1375
1376 void
1377 Mixer_UI::spill_redisplay (boost::shared_ptr<VCA> vca)
1378 {
1379         TreeModel::Children rows = track_model->children();
1380         std::list<boost::shared_ptr<VCA> > vcas;
1381         vcas.push_back (vca);
1382
1383         for (TreeModel::Children::const_iterator i = rows.begin(); i != rows.end(); ++i) {
1384                 AxisView* av = (*i)[stripable_columns.strip];
1385                 VCAMasterStrip* vms = dynamic_cast<VCAMasterStrip*> (av);
1386                 if (vms && vms->vca()->slaved_to (vca)) {
1387                         vcas.push_back (vms->vca());
1388                 }
1389         }
1390
1391         for (TreeModel::Children::const_iterator i = rows.begin(); i != rows.end(); ++i) {
1392
1393                 AxisView* av = (*i)[stripable_columns.strip];
1394                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1395                 bool const visible = (*i)[stripable_columns.visible];
1396
1397                 if (!strip) {
1398                         /* we're in the middle of changing a row, don't worry */
1399                         continue;
1400                 }
1401
1402                 if (!strip->route()) {
1403                         /* non-route element */
1404                         continue;
1405                 }
1406
1407                 if (strip->route()->is_master() || strip->route()->is_monitor()) {
1408                         continue;
1409                 }
1410
1411                 bool slaved = false;
1412                 for (std::list<boost::shared_ptr<VCA> >::const_iterator m = vcas.begin(); m != vcas.end(); ++m) {
1413                         if (strip->route()->slaved_to (*m)) {
1414                                 slaved = true;
1415                                 break;
1416                         }
1417                 }
1418
1419                 if (slaved && visible) {
1420
1421                         if (strip->packed()) {
1422                                 strip_packer.reorder_child (*strip, -1); /* put at end */
1423                         } else {
1424                                 strip_packer.pack_start (*strip, false, false);
1425                                 strip->set_packed (true);
1426                         }
1427
1428                 } else {
1429
1430                         if (strip->packed()) {
1431                                 strip_packer.remove (*strip);
1432                                 strip->set_packed (false);
1433                         }
1434                 }
1435         }
1436 }
1437
1438 void
1439 Mixer_UI::redisplay_track_list ()
1440 {
1441         if (no_track_list_redisplay) {
1442                 return;
1443         }
1444
1445         boost::shared_ptr<Stripable> ss = spilled_strip.lock ();
1446         if (ss) {
1447                 boost::shared_ptr<VCA> sv = boost::dynamic_pointer_cast<VCA> (ss);
1448                 if (sv) {
1449                         if (_spill_scroll_position <= 0 && scroller.get_hscrollbar()) {
1450                                 _spill_scroll_position = scroller.get_hscrollbar()->get_adjustment()->get_value();
1451                         }
1452                         spill_redisplay (sv);
1453                         return;
1454                 }
1455         }
1456
1457         TreeModel::Children rows = track_model->children();
1458         TreeModel::Children::iterator i;
1459         uint32_t n_masters = 0;
1460
1461         container_clear (vca_hpacker);
1462
1463         vca_hpacker.pack_end (vca_scroller_base, true, true);
1464         vca_hpacker.pack_end (add_vca_button, false, false);
1465
1466         add_vca_button.show ();
1467         vca_scroller_base.show();
1468
1469         for (i = rows.begin(); i != rows.end(); ++i) {
1470
1471                 AxisView* s = (*i)[stripable_columns.strip];
1472                 bool const visible = (*i)[stripable_columns.visible];
1473                 boost::shared_ptr<Stripable> stripable = (*i)[stripable_columns.stripable];
1474
1475                 if (!s) {
1476                         /* we're in the middle of changing a row, don't worry */
1477                         continue;
1478                 }
1479
1480                 VCAMasterStrip* vms;
1481
1482                 if ((vms = dynamic_cast<VCAMasterStrip*> (s))) {
1483                         if (visible) {
1484                                 vca_hpacker.pack_start (*vms, false, false);
1485                                 vms->show ();
1486                                 n_masters++;
1487                         }
1488                         continue;
1489                 }
1490
1491                 MixerStrip* strip = dynamic_cast<MixerStrip*> (s);
1492
1493                 if (!strip) {
1494                         continue;
1495                 }
1496
1497                 if (visible) {
1498
1499                         if (strip->packed()) {
1500                                 strip_packer.reorder_child (*strip, -1); /* put at end */
1501                         } else {
1502                                 strip_packer.pack_start (*strip, false, false);
1503                                 strip->set_packed (true);
1504                         }
1505
1506                 } else {
1507
1508                         if (stripable->is_master() || stripable->is_monitor()) {
1509                                 /* do nothing, these cannot be hidden */
1510                         } else {
1511                                 if (strip->packed()) {
1512                                         strip_packer.remove (*strip);
1513                                         strip->set_packed (false);
1514                                 }
1515                         }
1516                 }
1517         }
1518
1519         /* update visibility of VCA assign buttons */
1520
1521         if (n_masters == 0) {
1522                 //show/hide the channelstrip VCA assign buttons on channelstrips:
1523                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::remove_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1524
1525                 Glib::RefPtr<Action> act = ActionManager::get_action ("Mixer", "ToggleVCAPane");
1526                 if (act) {
1527                         act->set_sensitive (false);
1528                 }
1529
1530                 //remove the VCA packer, but don't change our prior setting for show/hide:
1531                 vca_vpacker.hide ();
1532         } else {
1533                 //show/hide the channelstrip VCA assign buttons on channelstrips:
1534                 UIConfiguration::instance().set_mixer_strip_visibility (VisibilityGroup::add_element (UIConfiguration::instance().get_mixer_strip_visibility(), X_("VCA")));
1535
1536                 Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action ("Mixer", "ToggleVCAPane");
1537                 act->set_sensitive (true);
1538
1539                 //if we were showing VCAs before, show them now:
1540                 showhide_vcas (act->get_active ());
1541         }
1542
1543         _group_tabs->set_dirty ();
1544
1545         if (_spill_scroll_position > 0 && scroller.get_hscrollbar()) {
1546                 Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1547                 adj->set_value (max (adj->get_lower(), min (adj->get_upper(), _spill_scroll_position)));
1548         }
1549         _spill_scroll_position = 0;
1550
1551 }
1552
1553 void
1554 Mixer_UI::strip_width_changed ()
1555 {
1556         _group_tabs->set_dirty ();
1557
1558 #ifdef __APPLE__
1559         TreeModel::Children rows = track_model->children();
1560         TreeModel::Children::iterator i;
1561         long order;
1562
1563         for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
1564                 AxisView* av = (*i)[stripable_columns.strip];
1565                 MixerStrip* strip = dynamic_cast<MixerStrip*> (av);
1566
1567                 if (strip == 0) {
1568                         continue;
1569                 }
1570
1571                 bool visible = (*i)[stripable_columns.visible];
1572
1573                 if (visible) {
1574                         strip->queue_draw();
1575                 }
1576         }
1577 #endif
1578
1579 }
1580
1581 struct PresentationInfoMixerSorter
1582 {
1583         bool operator() (boost::shared_ptr<Stripable> a, boost::shared_ptr<Stripable> b) {
1584                 if (a->is_master()) {
1585                         /* master after everything else */
1586                         return false;
1587                 } else if (b->is_master()) {
1588                         /* everything else before master */
1589                         return true;
1590                 }
1591                 return a->presentation_info().order () < b->presentation_info().order ();
1592         }
1593 };
1594
1595 void
1596 Mixer_UI::initial_track_display ()
1597 {
1598         StripableList sl;
1599         _session->get_stripables (sl);
1600
1601         sl.sort (PresentationInfoMixerSorter());
1602
1603         {
1604                 /* These are also used inside ::add_stripables() but we need
1605                  *  them here because we're going to clear the track_model also.
1606                  */
1607                 Unwinder<bool> uw1 (no_track_list_redisplay, true);
1608                 Unwinder<bool> uw2 (ignore_reorder, true);
1609
1610                 track_model->clear ();
1611                 add_stripables (sl);
1612         }
1613
1614         sync_treeview_from_presentation_info (Properties::order);
1615 }
1616
1617 bool
1618 Mixer_UI::track_display_button_press (GdkEventButton* ev)
1619 {
1620         if (Keyboard::is_context_menu_event (ev)) {
1621                 if (track_menu == 0) {
1622                         build_track_menu ();
1623                 }
1624                 track_menu->popup (ev->button, ev->time);
1625                 return true;
1626         }
1627         if ((ev->type == GDK_BUTTON_PRESS) && (ev->button == 1)) {
1628                 TreeModel::Path path;
1629                 TreeViewColumn* column;
1630                 int cellx, celly;
1631                 if (track_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1632                         TreeIter iter = track_model->get_iter (path);
1633                         if ((*iter)[stripable_columns.visible]) {
1634                                 boost::shared_ptr<ARDOUR::Stripable> s = (*iter)[stripable_columns.stripable];
1635                                 move_stripable_into_view (s);
1636                         }
1637                 }
1638         }
1639
1640         return false;
1641 }
1642
1643 void
1644 Mixer_UI::move_stripable_into_view (boost::shared_ptr<ARDOUR::Stripable> s)
1645 {
1646         if (!scroller.get_hscrollbar()) {
1647                 return;
1648         }
1649         if (s->presentation_info().special () || s->presentation_info().flag_match (PresentationInfo::VCA)) {
1650                 return;
1651         }
1652 #ifdef MIXBUS
1653         if (s->mixbus ()) {
1654                 return;
1655         }
1656 #endif
1657         bool found = false;
1658         int x0 = 0;
1659         Gtk::Allocation alloc;
1660         for (list<MixerStrip *>::const_iterator i = strips.begin(); i != strips.end(); ++i) {
1661                 if ((*i)->route() == s) {
1662                         int y;
1663                         found = true;
1664                         (*i)->translate_coordinates (strip_packer, 0, 0, x0, y);
1665                         alloc = (*i)->get_allocation ();
1666                         break;
1667                 }
1668         }
1669         if (!found) {
1670                 return;
1671         }
1672
1673         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
1674
1675         if (x0 < adj->get_value()) {
1676                 adj->set_value (max (adj->get_lower(), min (adj->get_upper(), (double) x0)));
1677         } else if (x0 + alloc.get_width() >= adj->get_value() + adj->get_page_size()) {
1678                 int x1 = x0 + alloc.get_width() - adj->get_page_size();
1679                 adj->set_value (max (adj->get_lower(), min (adj->get_upper(), (double) x1)));
1680         }
1681 }
1682
1683 void
1684 Mixer_UI::build_track_menu ()
1685 {
1686         using namespace Menu_Helpers;
1687         using namespace Gtk;
1688
1689         track_menu = new Menu;
1690         track_menu->set_name ("ArdourContextMenu");
1691         MenuList& items = track_menu->items();
1692
1693         items.push_back (MenuElem (_("Show All"), sigc::mem_fun(*this, &Mixer_UI::show_all_routes)));
1694         items.push_back (MenuElem (_("Hide All"), sigc::mem_fun(*this, &Mixer_UI::hide_all_routes)));
1695         items.push_back (MenuElem (_("Show All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiotracks)));
1696         items.push_back (MenuElem (_("Hide All Audio Tracks"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiotracks)));
1697         items.push_back (MenuElem (_("Show All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::show_all_miditracks)));
1698         items.push_back (MenuElem (_("Hide All Midi Tracks"), sigc::mem_fun (*this, &Mixer_UI::hide_all_miditracks)));
1699         items.push_back (MenuElem (_("Show All Busses"), sigc::mem_fun(*this, &Mixer_UI::show_all_audiobus)));
1700         items.push_back (MenuElem (_("Hide All Busses"), sigc::mem_fun(*this, &Mixer_UI::hide_all_audiobus)));
1701
1702 }
1703
1704 void
1705 Mixer_UI::stripable_property_changed (const PropertyChange& what_changed, boost::weak_ptr<Stripable> ws)
1706 {
1707         if (!what_changed.contains (ARDOUR::Properties::hidden) && !what_changed.contains (ARDOUR::Properties::name)) {
1708                 return;
1709         }
1710
1711         boost::shared_ptr<Stripable> s = ws.lock ();
1712
1713         if (!s) {
1714                 return;
1715         }
1716
1717         TreeModel::Children rows = track_model->children();
1718         TreeModel::Children::iterator i;
1719
1720         for (i = rows.begin(); i != rows.end(); ++i) {
1721                 boost::shared_ptr<Stripable> ss = (*i)[stripable_columns.stripable];
1722
1723                 if (s == ss) {
1724
1725                         if (what_changed.contains (ARDOUR::Properties::name)) {
1726                                 (*i)[stripable_columns.text] = s->name();
1727                         }
1728
1729                         if (what_changed.contains (ARDOUR::Properties::hidden)) {
1730                                 (*i)[stripable_columns.visible] = !s->presentation_info().hidden();
1731                                 redisplay_track_list ();
1732                         }
1733
1734                         return;
1735                 }
1736         }
1737
1738         if (s->is_master ()) {
1739                 return;
1740         }
1741
1742         error << _("track display list item for renamed strip not found!") << endmsg;
1743 }
1744
1745 bool
1746 Mixer_UI::group_display_button_press (GdkEventButton* ev)
1747 {
1748         TreeModel::Path path;
1749         TreeViewColumn* column;
1750         int cellx;
1751         int celly;
1752
1753         if (!group_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
1754                 if (ev->button == 3) {
1755                         _group_tabs->get_menu(0)->popup (ev->button, ev->time);
1756                 }
1757                 return true;
1758         }
1759
1760         TreeIter iter = group_model->get_iter (path);
1761         if (!iter) {
1762                 if (ev->button == 3) {
1763                         _group_tabs->get_menu(0)->popup (ev->button, ev->time);
1764                 }
1765                 return true;
1766         }
1767
1768         RouteGroup* group = (*iter)[group_columns.group];
1769
1770         if (Keyboard::is_context_menu_event (ev)) {
1771                 _group_tabs->get_menu(group)->popup (1, ev->time);
1772                 return true;
1773         }
1774
1775         switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
1776         case 1:
1777                 if (Keyboard::is_edit_event (ev)) {
1778                         if (group) {
1779                                 // edit_route_group (group);
1780 #ifdef __APPLE__
1781                                 group_display.queue_draw();
1782 #endif
1783                                 return true;
1784                         }
1785                 }
1786                 break;
1787
1788         case 0:
1789         {
1790                 bool visible = (*iter)[group_columns.visible];
1791                 (*iter)[group_columns.visible] = !visible;
1792 #ifdef __APPLE__
1793                 group_display.queue_draw();
1794 #endif
1795                 return true;
1796         }
1797
1798         default:
1799                 break;
1800         }
1801
1802         return false;
1803  }
1804
1805 void
1806 Mixer_UI::activate_all_route_groups ()
1807 {
1808         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), true));
1809 }
1810
1811 void
1812 Mixer_UI::disable_all_route_groups ()
1813 {
1814         _session->foreach_route_group (sigc::bind (sigc::mem_fun (*this, &Mixer_UI::set_route_group_activation), false));
1815 }
1816
1817 void
1818 Mixer_UI::route_groups_changed ()
1819 {
1820         ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
1821
1822         _in_group_rebuild_or_clear = true;
1823
1824         /* just rebuild the while thing */
1825
1826         group_model->clear ();
1827
1828 #if 0
1829         /* this is currently not used,
1830          * Mixer_UI::group_display_button_press() has a case for it,
1831          * and a commented edit_route_group() but that's n/a since 2011.
1832          *
1833          * This code is left as reminder that
1834          * row[group_columns.group] = 0 has special meaning.
1835          */
1836         {
1837                 TreeModel::Row row;
1838                 row = *(group_model->append());
1839                 row[group_columns.visible] = true;
1840                 row[group_columns.text] = (_("-all-"));
1841                 row[group_columns.group] = 0;
1842         }
1843 #endif
1844
1845         _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
1846
1847         _group_tabs->set_dirty ();
1848         _in_group_rebuild_or_clear = false;
1849 }
1850
1851 void
1852 Mixer_UI::new_route_group ()
1853 {
1854         _group_tabs->run_new_group_dialog (0, false);
1855 }
1856
1857 void
1858 Mixer_UI::remove_selected_route_group ()
1859 {
1860         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1861         TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
1862
1863         if (rows.empty()) {
1864                 return;
1865         }
1866
1867         TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
1868         TreeIter iter;
1869
1870         /* selection mode is single, so rows.begin() is it */
1871
1872         if ((iter = group_model->get_iter (*i))) {
1873
1874                 RouteGroup* rg = (*iter)[group_columns.group];
1875
1876                 if (rg) {
1877                         _session->remove_route_group (*rg);
1878                 }
1879         }
1880 }
1881
1882 void
1883 Mixer_UI::route_group_property_changed (RouteGroup* group, const PropertyChange& change)
1884 {
1885         if (in_group_row_change) {
1886                 return;
1887         }
1888
1889         /* force an update of any mixer strips that are using this group,
1890            otherwise mix group names don't change in mixer strips
1891         */
1892
1893         for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
1894                 if ((*i)->route_group() == group) {
1895                         (*i)->route_group_changed();
1896                 }
1897         }
1898
1899         TreeModel::iterator i;
1900         TreeModel::Children rows = group_model->children();
1901         Glib::RefPtr<TreeSelection> selection = group_display.get_selection();
1902
1903         in_group_row_change = true;
1904
1905         for (i = rows.begin(); i != rows.end(); ++i) {
1906                 if ((*i)[group_columns.group] == group) {
1907                         (*i)[group_columns.visible] = !group->is_hidden ();
1908                         (*i)[group_columns.text] = group->name ();
1909                         break;
1910                 }
1911         }
1912
1913         in_group_row_change = false;
1914
1915         if (change.contains (Properties::name)) {
1916                 _group_tabs->set_dirty ();
1917         }
1918
1919         for (list<MixerStrip*>::iterator j = strips.begin(); j != strips.end(); ++j) {
1920                 if ((*j)->route_group() == group) {
1921                         if (group->is_hidden ()) {
1922                                 hide_strip (*j);
1923                         } else {
1924                                 show_strip (*j);
1925                         }
1926                 }
1927         }
1928 }
1929
1930 void
1931 Mixer_UI::toggle_mixer_list ()
1932 {
1933         Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action ("Mixer", "ToggleMixerList");
1934         showhide_mixer_list (act->get_active());
1935 }
1936
1937 void
1938 Mixer_UI::showhide_mixer_list (bool yn)
1939 {
1940         if (yn) {
1941                 list_vpacker.show ();
1942         } else {
1943                 list_vpacker.hide ();
1944         }
1945 }
1946
1947 void
1948 Mixer_UI::toggle_monitor_section ()
1949 {
1950         Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action ("Mixer", "ToggleMonitorSection");
1951         showhide_monitor_section (act->get_active());
1952 }
1953
1954
1955 void
1956 Mixer_UI::showhide_monitor_section (bool yn)
1957 {
1958         if (monitor_section().tearoff().torn_off()) {
1959                 return;
1960         }
1961
1962         if (yn) {
1963                 monitor_section().tearoff().show();
1964         } else {
1965                 monitor_section().tearoff().hide();
1966         }
1967 }
1968
1969 void
1970 Mixer_UI::toggle_vcas ()
1971 {
1972         Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action ("Mixer", "ToggleVCAPane");
1973         showhide_vcas (act->get_active());
1974 }
1975
1976 void
1977 Mixer_UI::showhide_vcas (bool yn)
1978 {
1979         if (yn) {
1980                 vca_vpacker.show();
1981         } else {
1982                 vca_vpacker.hide();
1983         }
1984 }
1985
1986 #ifdef MIXBUS
1987 void
1988 Mixer_UI::toggle_mixbuses ()
1989 {
1990         Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action ("Mixer", "ToggleMixbusPane");
1991         showhide_mixbuses (act->get_active());
1992 }
1993
1994 void
1995 Mixer_UI::showhide_mixbuses (bool on)
1996 {
1997         if (on) {
1998                 mb_vpacker.show();
1999         } else {
2000                 mb_vpacker.hide();
2001         }
2002 }
2003 #endif
2004
2005
2006 void
2007 Mixer_UI::route_group_name_edit (const std::string& path, const std::string& new_text)
2008 {
2009         RouteGroup* group;
2010         TreeIter iter;
2011
2012         if ((iter = group_model->get_iter (path))) {
2013
2014                 if ((group = (*iter)[group_columns.group]) == 0) {
2015                         return;
2016                 }
2017
2018                 if (new_text != group->name()) {
2019                         group->set_name (new_text);
2020                 }
2021         }
2022 }
2023
2024 void
2025 Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter)
2026 {
2027         RouteGroup* group;
2028
2029         if (in_group_row_change) {
2030                 return;
2031         }
2032
2033         if ((group = (*iter)[group_columns.group]) == 0) {
2034                 return;
2035         }
2036
2037         std::string name = (*iter)[group_columns.text];
2038
2039         if (name != group->name()) {
2040                 group->set_name (name);
2041         }
2042
2043         bool hidden = !(*iter)[group_columns.visible];
2044
2045         if (hidden != group->is_hidden ()) {
2046                 group->set_hidden (hidden, this);
2047         }
2048 }
2049
2050 /** Called when a group model row is deleted, but also when the model is
2051  *  reordered by a user drag-and-drop; the latter is what we are
2052  *  interested in here.
2053  */
2054 void
2055 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
2056 {
2057         if (_in_group_rebuild_or_clear) {
2058                 return;
2059         }
2060
2061         /* Re-write the session's route group list so that the new order is preserved */
2062
2063         list<RouteGroup*> new_list;
2064
2065         Gtk::TreeModel::Children children = group_model->children();
2066         for (Gtk::TreeModel::Children::iterator i = children.begin(); i != children.end(); ++i) {
2067                 RouteGroup* g = (*i)[group_columns.group];
2068                 if (g) {
2069                         new_list.push_back (g);
2070                 }
2071         }
2072
2073         _session->reorder_route_groups (new_list);
2074 }
2075
2076
2077 void
2078 Mixer_UI::add_route_group (RouteGroup* group)
2079 {
2080         ENSURE_GUI_THREAD (*this, &Mixer_UI::add_route_group, group)
2081         bool focus = false;
2082
2083         in_group_row_change = true;
2084
2085         TreeModel::Row row = *(group_model->append());
2086         row[group_columns.visible] = !group->is_hidden ();
2087         row[group_columns.group] = group;
2088         if (!group->name().empty()) {
2089                 row[group_columns.text] = group->name();
2090         } else {
2091                 row[group_columns.text] = _("unnamed");
2092                 focus = true;
2093         }
2094
2095         group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
2096
2097         if (focus) {
2098                 TreeViewColumn* col = group_display.get_column (0);
2099                 CellRendererText* name_cell = dynamic_cast<CellRendererText*>(group_display.get_column_cell_renderer (1));
2100                 group_display.set_cursor (group_model->get_path (row), *col, *name_cell, true);
2101         }
2102
2103         _group_tabs->set_dirty ();
2104
2105         in_group_row_change = false;
2106 }
2107
2108 bool
2109 Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
2110 {
2111         using namespace Menu_Helpers;
2112
2113         if (Keyboard::is_context_menu_event (ev)) {
2114                 ARDOUR_UI::instance()->add_route ();
2115                 return true;
2116         }
2117
2118         return false;
2119 }
2120
2121 void
2122 Mixer_UI::scroller_drag_data_received (const Glib::RefPtr<Gdk::DragContext>& context, int x, int y, const Gtk::SelectionData& data, guint info, guint time)
2123 {
2124         if (data.get_target() != "PluginFavoritePtr") {
2125                 context->drag_finish (false, false, time);
2126                 return;
2127         }
2128
2129         const void * d = data.get_data();
2130         const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>* tv = reinterpret_cast<const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>*>(d);
2131
2132         PluginPresetList nfos;
2133         TreeView* source;
2134         tv->get_object_drag_data (nfos, &source);
2135
2136         Route::ProcessorList pl;
2137         bool ok = false;
2138
2139         for (list<PluginPresetPtr>::const_iterator i = nfos.begin(); i != nfos.end(); ++i) {
2140                 PluginPresetPtr ppp = (*i);
2141                 PluginInfoPtr pip = ppp->_pip;
2142                 if (!pip->is_instrument ()) {
2143                         continue;
2144                 }
2145                 ARDOUR_UI::instance()->session_add_midi_route (true, (RouteGroup*) 0, 1, _("MIDI"), Config->get_strict_io (), pip, ppp->_preset.valid ? &ppp->_preset : 0, PresentationInfo::max_order);
2146                 ok = true;
2147         }
2148
2149         context->drag_finish (ok, false, time);
2150 }
2151
2152 void
2153 Mixer_UI::set_strip_width (Width w, bool save)
2154 {
2155         _strip_width = w;
2156
2157         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2158                 (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
2159         }
2160 }
2161
2162
2163 struct PluginStateSorter {
2164 public:
2165         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
2166                 std::list<std::string>::const_iterator aiter = std::find(_user.begin(), _user.end(), (*a).unique_id);
2167                 std::list<std::string>::const_iterator biter = std::find(_user.begin(), _user.end(), (*b).unique_id);
2168                 if (aiter != _user.end() && biter != _user.end()) {
2169                         return std::distance (_user.begin(), aiter)  < std::distance (_user.begin(), biter);
2170                 }
2171                 if (aiter != _user.end()) {
2172                         return true;
2173                 }
2174                 if (biter != _user.end()) {
2175                         return false;
2176                 }
2177                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
2178         }
2179
2180         PluginStateSorter(std::list<std::string> user) : _user (user)  {}
2181 private:
2182         std::list<std::string> _user;
2183 };
2184
2185 int
2186 Mixer_UI::set_state (const XMLNode& node, int version)
2187 {
2188         bool yn;
2189
2190         Tabbable::set_state (node, version);
2191
2192         if (node.get_property ("narrow-strips", yn)) {
2193                 if (yn) {
2194                         set_strip_width (Narrow);
2195                 } else {
2196                         set_strip_width (Wide);
2197                 }
2198         }
2199
2200         node.get_property ("show-mixer", _visible);
2201
2202         yn = false;
2203         node.get_property ("maximised", yn);
2204         {
2205                 Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action (X_("Common"), X_("ToggleMaximalMixer"));
2206                 bool fs = act && act->get_active();
2207                 if (yn ^ fs) {
2208                         ActionManager::do_action ("Common", "ToggleMaximalMixer");
2209                 }
2210         }
2211
2212         yn = true;
2213         node.get_property ("show-mixer-list", yn);
2214         {
2215                 Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action (X_("Mixer"), X_("ToggleMixerList"));
2216                 /* do it twice to force the change */
2217                 act->set_active (!yn);
2218                 act->set_active (yn);
2219         }
2220
2221         yn = true;
2222         node.get_property ("monitor-section-visible", yn);
2223         {
2224                 Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action (X_("Mixer"), X_("ToggleMonitorSection"));
2225                 /* do it twice to force the change */
2226                 act->set_active (!yn);
2227                 act->set_active (yn);
2228         }
2229
2230         yn = true;
2231         node.get_property ("show-vca-pane", yn);
2232         {
2233                 Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action (X_("Mixer"), X_("ToggleVCAPane"));
2234                 /* do it twice to force the change */
2235                 act->set_active (!yn);
2236                 act->set_active (yn);
2237         }
2238
2239 #ifdef MIXBUS
2240         yn = true;
2241         node.get_property ("show-mixbus-pane", yn);
2242         {
2243                 Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action (X_("Mixer"), X_("ToggleMixbusPane"));
2244                 /* do it twice to force the change */
2245                 act->set_active (!yn);
2246                 act->set_active (yn);
2247         }
2248 #endif
2249
2250         //check for the user's plugin_order file
2251         XMLNode plugin_order_new(X_("PO"));
2252         if (PluginManager::instance().load_plugin_order_file(plugin_order_new)) {
2253                 store_current_favorite_order ();
2254                 std::list<string> order;
2255                 const XMLNodeList& kids = plugin_order_new.children("PluginInfo");
2256                 XMLNodeConstIterator i;
2257                 for (i = kids.begin(); i != kids.end(); ++i) {
2258                         std::string unique_id;
2259                         if ((*i)->get_property ("unique-id", unique_id)) {
2260                                 order.push_back (unique_id);
2261                                 if ((*i)->get_property ("expanded", yn)) {
2262                                         favorite_ui_state[unique_id] = yn;
2263                                 }
2264                         }
2265                 }
2266                 PluginStateSorter cmp (order);
2267                 favorite_order.sort (cmp);
2268                 sync_treeview_from_favorite_order ();
2269
2270         } else {
2271                 //if there is no user file, then use an existing one from instant.xml
2272                 //NOTE: if you are loading an old session, this might come from the session's instant.xml
2273                 //Todo:  in the next major version, we should probably stop doing the instant.xml check, and just use the new file
2274                 XMLNode* plugin_order;
2275                 if ((plugin_order = find_named_node (node, "PluginOrder")) != 0) {
2276                         store_current_favorite_order ();
2277                         std::list<string> order;
2278                         const XMLNodeList& kids = plugin_order->children("PluginInfo");
2279                         XMLNodeConstIterator i;
2280                         for (i = kids.begin(); i != kids.end(); ++i) {
2281                                 std::string unique_id;
2282                                 if ((*i)->get_property ("unique-id", unique_id)) {
2283                                         order.push_back (unique_id);
2284                                         if ((*i)->get_property ("expanded", yn)) {
2285                                                 favorite_ui_state[unique_id] = yn;
2286                                         }
2287                                 }
2288                         }
2289
2290                         PluginStateSorter cmp (order);
2291                         favorite_order.sort (cmp);
2292                         sync_treeview_from_favorite_order ();
2293                 }
2294         }
2295
2296         return 0;
2297 }
2298
2299 void
2300 Mixer_UI::save_plugin_order_file ()
2301 {
2302         //this writes the plugin order to the user's preference file ( plugin_metadata/plugin_order )
2303
2304         //NOTE:  this replaces the old code that stores info in instant.xml
2305         //why?  because instant.xml prefers the per-session settings, and we want this to be a global pref
2306
2307         store_current_favorite_order ();
2308         XMLNode plugin_order ("PluginOrder");
2309         uint32_t cnt = 0;
2310         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i, ++cnt) {
2311                 XMLNode* p = new XMLNode ("PluginInfo");
2312                 p->set_property ("sort", cnt);
2313                 p->set_property ("unique-id", (*i)->unique_id);
2314                 if (favorite_ui_state.find ((*i)->unique_id) != favorite_ui_state.end ()) {
2315                         p->set_property ("expanded", favorite_ui_state[(*i)->unique_id]);
2316                 }
2317                 plugin_order.add_child_nocopy (*p);
2318         }
2319         PluginManager::instance().save_plugin_order_file( plugin_order );
2320 }
2321
2322 XMLNode&
2323 Mixer_UI::get_state ()
2324 {
2325         XMLNode* node = new XMLNode (X_("Mixer"));
2326
2327         node->add_child_nocopy (Tabbable::get_state());
2328
2329         node->set_property (X_("mixer-rhs-pane1-pos"), rhs_pane1.get_divider());
2330         node->set_property (X_("mixer-rhs_pane2-pos"), rhs_pane2.get_divider());
2331         node->set_property (X_("mixer-list-hpane-pos"), list_hpane.get_divider());
2332         node->set_property (X_("mixer-inner-pane-pos"),  inner_pane.get_divider());
2333
2334         node->set_property ("narrow-strips", (_strip_width == Narrow));
2335         node->set_property ("show-mixer", _visible);
2336         node->set_property ("maximised", _maximised);
2337
2338         Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action ("Mixer", "ToggleMixerList");
2339         node->set_property ("show-mixer-list", act->get_active ());
2340
2341         act = ActionManager::get_toggle_action ("Mixer", "ToggleMonitorSection");
2342         node->set_property ("monitor-section-visible", act->get_active ());
2343
2344         act = ActionManager::get_toggle_action ("Mixer", "ToggleVCAPane");
2345         node->set_property ("show-vca-pane", act->get_active ());
2346
2347 #ifdef MIXBUS
2348         act = ActionManager::get_toggle_action ("Mixer", "ToggleMixbusPane");
2349         node->set_property ("show-mixbus-pane", act->get_active ());
2350 #endif
2351
2352         return *node;
2353 }
2354
2355 void
2356 Mixer_UI::scroll_left ()
2357 {
2358         if (!scroller.get_hscrollbar()) return;
2359         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2360         int sc_w = scroller.get_width();
2361         int sp_w = strip_packer.get_width();
2362         if (sp_w <= sc_w) {
2363                 return;
2364         }
2365         int lp = adj->get_value();
2366         int lm = 0;
2367         using namespace Gtk::Box_Helpers;
2368         const BoxList& strips = strip_packer.children();
2369         for (BoxList::const_iterator i = strips.begin(); i != strips.end(); ++i) {
2370                 if (i->get_widget() == & add_button) {
2371                         continue;
2372                 }
2373 #ifdef MIXBUS
2374                 if (i->get_widget() == &mb_shadow) {
2375                         continue;
2376                 }
2377 #endif
2378                 lm += i->get_widget()->get_width ();
2379                 if (lm >= lp) {
2380                         lm -= i->get_widget()->get_width ();
2381                         break;
2382                 }
2383         }
2384         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), min (adj->get_upper(), lm - 1.0)));
2385 }
2386
2387 void
2388 Mixer_UI::scroll_right ()
2389 {
2390         if (!scroller.get_hscrollbar()) return;
2391         Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
2392         int sc_w = scroller.get_width();
2393         int sp_w = strip_packer.get_width();
2394         if (sp_w <= sc_w) {
2395                 return;
2396         }
2397         int lp = adj->get_value();
2398         int lm = 0;
2399         using namespace Gtk::Box_Helpers;
2400         const BoxList& strips = strip_packer.children();
2401         for (BoxList::const_iterator i = strips.begin(); i != strips.end(); ++i) {
2402                 if (i->get_widget() == & add_button) {
2403                         continue;
2404                 }
2405 #ifdef MIXBUS
2406                 if (i->get_widget() == &mb_shadow) {
2407                         continue;
2408                 }
2409 #endif
2410                 lm += i->get_widget()->get_width ();
2411                 if (lm > lp + 1) {
2412                         break;
2413                 }
2414         }
2415         scroller.get_hscrollbar()->set_value (max (adj->get_lower(), min (adj->get_upper(), lm - 1.0)));
2416 }
2417
2418 bool
2419 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
2420 {
2421         switch (ev->direction) {
2422         case GDK_SCROLL_LEFT:
2423                 scroll_left ();
2424                 return true;
2425         case GDK_SCROLL_UP:
2426                 if (ev->state & Keyboard::TertiaryModifier) {
2427                         scroll_left ();
2428                         return true;
2429                 }
2430                 return false;
2431
2432         case GDK_SCROLL_RIGHT:
2433                 scroll_right ();
2434                 return true;
2435
2436         case GDK_SCROLL_DOWN:
2437                 if (ev->state & Keyboard::TertiaryModifier) {
2438                         scroll_right ();
2439                         return true;
2440                 }
2441                 return false;
2442         }
2443
2444         return false;
2445 }
2446
2447
2448 void
2449 Mixer_UI::parameter_changed (string const & p)
2450 {
2451         if (p == "show-group-tabs") {
2452                 bool const s = _session->config.get_show_group_tabs ();
2453                 if (s) {
2454                         _group_tabs->show ();
2455                 } else {
2456                         _group_tabs->hide ();
2457                 }
2458         } else if (p == "default-narrow_ms") {
2459                 bool const s = UIConfiguration::instance().get_default_narrow_ms ();
2460                 for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2461                         (*i)->set_width_enum (s ? Narrow : Wide, this);
2462                 }
2463         }
2464 }
2465
2466 void
2467 Mixer_UI::set_route_group_activation (RouteGroup* g, bool a)
2468 {
2469         g->set_active (a, this);
2470 }
2471
2472 PluginSelector*
2473 Mixer_UI::plugin_selector()
2474 {
2475 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
2476         if (!_plugin_selector)
2477                 _plugin_selector = new PluginSelector (PluginManager::instance());
2478 #endif
2479
2480         return _plugin_selector;
2481 }
2482
2483 void
2484 Mixer_UI::setup_track_display ()
2485 {
2486         track_model = ListStore::create (stripable_columns);
2487         track_display.set_model (track_model);
2488         track_display.append_column (_("Show"), stripable_columns.visible);
2489         track_display.append_column (_("Strips"), stripable_columns.text);
2490         track_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
2491         track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
2492         track_display.get_column (0)->set_expand(false);
2493         track_display.get_column (1)->set_expand(true);
2494         track_display.get_column (1)->set_sizing (Gtk::TREE_VIEW_COLUMN_FIXED);
2495         track_display.set_name (X_("EditGroupList"));
2496         track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
2497         track_display.set_reorderable (true);
2498         track_display.set_headers_visible (true);
2499         track_display.set_can_focus(false);
2500
2501         track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
2502         track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
2503
2504         CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (0));
2505         track_list_visible_cell->property_activatable() = true;
2506         track_list_visible_cell->property_radio() = false;
2507         track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
2508
2509         track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
2510
2511         track_display_scroller.add (track_display);
2512         track_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
2513
2514         VBox* v = manage (new VBox);
2515         v->show ();
2516         v->pack_start (track_display_scroller, true, true);
2517
2518         track_display_frame.set_name("BaseFrame");
2519         track_display_frame.set_shadow_type (Gtk::SHADOW_IN);
2520         track_display_frame.add (*v);
2521
2522         track_display_scroller.show();
2523         track_display_frame.show();
2524         track_display.show();
2525 }
2526
2527 void
2528 Mixer_UI::new_track_or_bus ()
2529 {
2530         ARDOUR_UI::instance()->add_route ();
2531 }
2532
2533 void
2534 Mixer_UI::update_title ()
2535 {
2536         if (!own_window()) {
2537                 return;
2538         }
2539
2540         if (_session) {
2541                 string n;
2542
2543                 if (_session->snap_name() != _session->name()) {
2544                         n = _session->snap_name ();
2545                 } else {
2546                         n = _session->name ();
2547                 }
2548
2549                 if (_session->dirty ()) {
2550                         n = "*" + n;
2551                 }
2552
2553                 WindowTitle title (n);
2554                 title += S_("Window|Mixer");
2555                 title += Glib::get_application_name ();
2556                 own_window()->set_title (title.get_string());
2557
2558         } else {
2559
2560                 WindowTitle title (S_("Window|Mixer"));
2561                 title += Glib::get_application_name ();
2562                 own_window()->set_title (title.get_string());
2563         }
2564 }
2565
2566 MixerStrip*
2567 Mixer_UI::strip_by_x (int x)
2568 {
2569         for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
2570                 int x1, x2, y;
2571
2572                 (*i)->translate_coordinates (_content, 0, 0, x1, y);
2573                 x2 = x1 + (*i)->get_width();
2574
2575                 if (x >= x1 && x <= x2) {
2576                         return (*i);
2577                 }
2578         }
2579
2580         return 0;
2581 }
2582
2583 void
2584 Mixer_UI::set_axis_targets_for_operation ()
2585 {
2586         _axis_targets.clear ();
2587
2588         if (!_selection.empty()) {
2589                 _axis_targets = _selection.axes;
2590                 return;
2591         }
2592
2593 //  removed "implicit" selections of strips, after discussion on IRC
2594
2595 }
2596
2597 void
2598 Mixer_UI::monitor_section_going_away ()
2599 {
2600         XMLNode* ui_node = Config->extra_xml(X_("UI"));
2601
2602         /* immediate state save.
2603          *
2604          * Tearoff settings are otherwise only stored during
2605          * save_ardour_state(). The mon-section may or may not
2606          * exist at that point.
2607          */
2608
2609         if (ui_node) {
2610                 XMLNode* tearoff_node = ui_node->child (X_("Tearoffs"));
2611                 if (tearoff_node) {
2612                         tearoff_node->remove_nodes_and_delete (X_("monitor-section"));
2613                         XMLNode* t = new XMLNode (X_("monitor-section"));
2614                         _monitor_section.tearoff().add_state (*t);
2615                         tearoff_node->add_child_nocopy (*t);
2616                 }
2617         }
2618
2619         monitor_section_detached ();
2620         out_packer.remove (_monitor_section.tearoff());
2621 }
2622
2623 void
2624 Mixer_UI::toggle_midi_input_active (bool flip_others)
2625 {
2626         boost::shared_ptr<RouteList> rl (new RouteList);
2627         bool onoff = false;
2628
2629         set_axis_targets_for_operation ();
2630
2631         for (AxisViewSelection::iterator r = _axis_targets.begin(); r != _axis_targets.end(); ++r) {
2632                 boost::shared_ptr<MidiTrack> mt = boost::dynamic_pointer_cast<MidiTrack> ((*r)->stripable());
2633
2634                 if (mt) {
2635                         rl->push_back (mt);
2636                         onoff = !mt->input_active();
2637                 }
2638         }
2639
2640         _session->set_exclusive_input_active (rl, onoff, flip_others);
2641 }
2642
2643 void
2644 Mixer_UI::maximise_mixer_space ()
2645 {
2646         if (!own_window()) {
2647                 return;
2648         }
2649
2650         if (_maximised) {
2651                 return;
2652         }
2653
2654         _window->fullscreen ();
2655         _maximised = true;
2656 }
2657
2658 void
2659 Mixer_UI::restore_mixer_space ()
2660 {
2661         if (!own_window()) {
2662                 return;
2663         }
2664
2665         if (!_maximised) {
2666                 return;
2667         }
2668
2669         own_window()->unfullscreen();
2670         _maximised = false;
2671 }
2672
2673 void
2674 Mixer_UI::monitor_section_attached ()
2675 {
2676         Glib::RefPtr<ToggleAction> act = ActionManager::get_toggle_action ("Mixer", "ToggleMonitorSection");
2677         act->set_sensitive (true);
2678         showhide_monitor_section (act->get_active ());
2679 }
2680
2681 void
2682 Mixer_UI::monitor_section_detached ()
2683 {
2684         Glib::RefPtr<Action> act = ActionManager::get_action ("Mixer", "ToggleMonitorSection");
2685         act->set_sensitive (false);
2686 }
2687
2688 void
2689 Mixer_UI::store_current_favorite_order ()
2690 {
2691         typedef Gtk::TreeModel::Children type_children;
2692         type_children children = favorite_plugins_model->children();
2693         favorite_order.clear();
2694         for(type_children::iterator iter = children.begin(); iter != children.end(); ++iter)
2695         {
2696                 Gtk::TreeModel::Row row = *iter;
2697                 ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2698                 favorite_order.push_back (ppp->_pip);
2699                 std::string name = row[favorite_plugins_columns.name];
2700                 favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2701         }
2702 }
2703
2704 void
2705 Mixer_UI::save_favorite_ui_state (const TreeModel::iterator& iter, const TreeModel::Path& path)
2706 {
2707         Gtk::TreeModel::Row row = *iter;
2708         ARDOUR::PluginPresetPtr ppp = row[favorite_plugins_columns.plugin];
2709         assert (ppp);
2710         favorite_ui_state[(*ppp->_pip).unique_id] = favorite_plugins_display.row_expanded (favorite_plugins_model->get_path(iter));
2711 }
2712
2713 void
2714 Mixer_UI::refiller (PluginInfoList& result, const PluginInfoList& plugs)
2715 {
2716         PluginManager& manager (PluginManager::instance());
2717         for (PluginInfoList::const_iterator i = plugs.begin(); i != plugs.end(); ++i) {
2718
2719                 /* not a Favorite? skip it */
2720                 if (manager.get_status (*i) != PluginManager::Favorite) {
2721                         continue;
2722                 }
2723
2724                 /* Check the tag combo selection, and skip this plugin if it doesn't match the selected tag(s) */
2725                 string test = favorite_plugins_tag_combo.get_active_text();
2726                 if (test != _("Show All")) {
2727                         vector<string> tags = manager.get_tags(*i);
2728
2729                         //does the selected tag match any of the tags in the plugin?
2730                         vector<string>::iterator tt =  find (tags.begin(), tags.end(), test);
2731                         if (tt == tags.end()) {
2732                                 continue;
2733                         }
2734                 }
2735
2736                 result.push_back (*i);
2737         }
2738 }
2739
2740 struct PluginCustomSorter {
2741 public:
2742         bool operator() (PluginInfoPtr a, PluginInfoPtr b) const {
2743                 PluginInfoList::const_iterator aiter = _user.begin();
2744                 PluginInfoList::const_iterator biter = _user.begin();
2745                 while (aiter != _user.end()) { if ((*aiter)->unique_id == a->unique_id) { break; } ++aiter; }
2746                 while (biter != _user.end()) { if ((*biter)->unique_id == b->unique_id) { break; } ++biter; }
2747
2748                 if (aiter != _user.end() && biter != _user.end()) {
2749                         return std::distance (_user.begin(), aiter) < std::distance (_user.begin(), biter);
2750                 }
2751                 if (aiter != _user.end()) {
2752                         return true;
2753                 }
2754                 if (biter != _user.end()) {
2755                         return false;
2756                 }
2757                 return ARDOUR::cmp_nocase((*a).name, (*b).name) == -1;
2758         }
2759         PluginCustomSorter(PluginInfoList user) : _user (user)  {}
2760 private:
2761         PluginInfoList _user;
2762 };
2763
2764 void
2765 Mixer_UI::refill_favorite_plugins ()
2766 {
2767         PluginInfoList plugs;
2768         PluginManager& mgr (PluginManager::instance());
2769
2770 #ifdef LV2_SUPPORT
2771         refiller (plugs, mgr.lv2_plugin_info ());
2772 #endif
2773 #ifdef WINDOWS_VST_SUPPORT
2774         refiller (plugs, mgr.windows_vst_plugin_info ());
2775 #endif
2776 #ifdef LXVST_SUPPORT
2777         refiller (plugs, mgr.lxvst_plugin_info ());
2778 #endif
2779 #ifdef MACVST_SUPPORT
2780         refiller (plugs, mgr.mac_vst_plugin_info ());
2781 #endif
2782 #ifdef AUDIOUNIT_SUPPORT
2783         refiller (plugs, mgr.au_plugin_info ());
2784 #endif
2785         refiller (plugs, mgr.ladspa_plugin_info ());
2786         refiller (plugs, mgr.lua_plugin_info ());
2787
2788         store_current_favorite_order ();
2789
2790         PluginCustomSorter cmp (favorite_order);
2791         plugs.sort (cmp);
2792
2793         favorite_order = plugs;
2794
2795         sync_treeview_from_favorite_order ();
2796 }
2797
2798 void
2799 Mixer_UI::plugin_list_changed ()
2800 {
2801         refill_favorite_plugins();
2802         refill_tag_combo();
2803 }
2804
2805 void
2806 Mixer_UI::refill_tag_combo ()
2807 {
2808         PluginManager& mgr (PluginManager::instance());
2809
2810         std::vector<std::string> tags = mgr.get_all_tags (PluginManager::OnlyFavorites);
2811
2812         favorite_plugins_tag_combo.clear();
2813         favorite_plugins_tag_combo.append_text (_("Show All"));
2814
2815         for (vector<string>::iterator t = tags.begin (); t != tags.end (); ++t) {
2816                 favorite_plugins_tag_combo.append_text (*t);
2817         }
2818
2819         favorite_plugins_tag_combo.set_active_text (_("Show All"));
2820 }
2821
2822 void
2823 Mixer_UI::sync_treeview_favorite_ui_state (const TreeModel::Path& path, const TreeModel::iterator&)
2824 {
2825         TreeIter iter;
2826         if (!(iter = favorite_plugins_model->get_iter (path))) {
2827                 return;
2828         }
2829         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2830         if (!ppp) {
2831                 return;
2832         }
2833         PluginInfoPtr pip = ppp->_pip;
2834         if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2835                 if (favorite_ui_state[pip->unique_id]) {
2836                         favorite_plugins_display.expand_row (path, true);
2837                 }
2838         }
2839 }
2840
2841 void
2842 Mixer_UI::sync_treeview_from_favorite_order ()
2843 {
2844         favorite_plugins_model->clear ();
2845         for (PluginInfoList::const_iterator i = favorite_order.begin(); i != favorite_order.end(); ++i) {
2846                 PluginInfoPtr pip = (*i);
2847
2848                 TreeModel::Row newrow = *(favorite_plugins_model->append());
2849                 newrow[favorite_plugins_columns.name] = (*i)->name;
2850                 newrow[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip));
2851                 if (!_session) {
2852                         continue;
2853                 }
2854
2855                 vector<ARDOUR::Plugin::PresetRecord> presets = (*i)->get_presets (true);
2856                 for (vector<ARDOUR::Plugin::PresetRecord>::const_iterator j = presets.begin(); j != presets.end(); ++j) {
2857                         if (!(*j).user) {
2858                                 continue;
2859                         }
2860                         Gtk::TreeModel::Row child_row = *(favorite_plugins_model->append (newrow.children()));
2861                         child_row[favorite_plugins_columns.name] = (*j).label;
2862                         child_row[favorite_plugins_columns.plugin] = PluginPresetPtr (new PluginPreset(pip, &(*j)));
2863                 }
2864                 if (favorite_ui_state.find (pip->unique_id) != favorite_ui_state.end ()) {
2865                         if (favorite_ui_state[pip->unique_id]) {
2866                                 favorite_plugins_display.expand_row (favorite_plugins_model->get_path(newrow), true);
2867                         }
2868                 }
2869         }
2870 }
2871
2872 void
2873 Mixer_UI::popup_note_context_menu (GdkEventButton *ev)
2874 {
2875         using namespace Gtk::Menu_Helpers;
2876
2877         Gtk::Menu* m = manage (new Menu);
2878         MenuList& items = m->items ();
2879
2880         if (_selection.axes.empty()) {
2881                 items.push_back (MenuElem (_("No Track/Bus is selected.")));
2882         } else {
2883                 items.push_back (MenuElem (_("Add at the top"),
2884                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddTop)));
2885                 items.push_back (MenuElem (_("Add Pre-Fader"),
2886                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPreFader)));
2887                 items.push_back (MenuElem (_("Add Post-Fader"),
2888                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddPostFader)));
2889                 items.push_back (MenuElem (_("Add at the end"),
2890                                         sigc::bind (sigc::mem_fun (*this, &Mixer_UI::add_selected_processor), AddBottom)));
2891         }
2892
2893         items.push_back (SeparatorElem());
2894
2895         items.push_back (MenuElem (_("Remove from favorites"), sigc::mem_fun (*this, &Mixer_UI::remove_selected_from_favorites)));
2896
2897         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2898         if (ppp && ppp->_preset.valid && ppp->_preset.user) {
2899                 // we cannot currently delete AU presets
2900                 if (!ppp->_pip || ppp->_pip->type != AudioUnit) {
2901                         items.push_back (MenuElem (_("Delete Preset"), sigc::mem_fun (*this, &Mixer_UI::delete_selected_preset)));
2902                 }
2903         }
2904
2905         m->popup (ev->button, ev->time);
2906 }
2907
2908 bool
2909 Mixer_UI::plugin_row_button_press (GdkEventButton *ev)
2910 {
2911         if ((ev->type == GDK_BUTTON_PRESS) && (ev->button == 3)) {
2912                 TreeModel::Path path;
2913                 TreeViewColumn* column;
2914                 int cellx, celly;
2915                 if (favorite_plugins_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
2916                         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2917                         if (selection) {
2918                                 selection->unselect_all();
2919                                 selection->select(path);
2920                         }
2921                 }
2922                 ARDOUR::PluginPresetPtr ppp = selected_plugin();
2923                 if (ppp) {
2924                         popup_note_context_menu (ev);
2925                 }
2926         }
2927         return false;
2928 }
2929
2930
2931 PluginPresetPtr
2932 Mixer_UI::selected_plugin ()
2933 {
2934         Glib::RefPtr<Gtk::TreeView::Selection> selection = favorite_plugins_display.get_selection();
2935         if (!selection) {
2936                 return PluginPresetPtr();
2937         }
2938         Gtk::TreeModel::iterator iter = selection->get_selected();
2939         if (!iter) {
2940                 return PluginPresetPtr();
2941         }
2942         return (*iter)[favorite_plugins_columns.plugin];
2943 }
2944
2945 void
2946 Mixer_UI::add_selected_processor (ProcessorPosition pos)
2947 {
2948         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2949         if (ppp) {
2950                 add_favorite_processor (ppp, pos);
2951         }
2952 }
2953
2954 void
2955 Mixer_UI::delete_selected_preset ()
2956 {
2957         if (!_session) {
2958                 return;
2959         }
2960         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2961         if (!ppp || !ppp->_preset.valid || !ppp->_preset.user) {
2962                 return;
2963         }
2964         PluginPtr plugin = ppp->_pip->load (*_session);
2965         plugin->get_presets();
2966         plugin->remove_preset (ppp->_preset.label);
2967 }
2968
2969 void
2970 Mixer_UI::remove_selected_from_favorites ()
2971 {
2972         ARDOUR::PluginPresetPtr ppp = selected_plugin();
2973         if (!ppp) {
2974                 return;
2975         }
2976         PluginManager::PluginStatusType status = PluginManager::Normal;
2977         PluginManager& manager (PluginManager::instance());
2978
2979         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
2980         manager.save_statuses ();
2981 }
2982
2983 void
2984 Mixer_UI::plugin_row_activated (const TreeModel::Path& path, TreeViewColumn* column)
2985 {
2986         TreeIter iter;
2987         if (!(iter = favorite_plugins_model->get_iter (path))) {
2988                 return;
2989         }
2990         ARDOUR::PluginPresetPtr ppp = (*iter)[favorite_plugins_columns.plugin];
2991         add_favorite_processor (ppp, AddPreFader); // TODO: preference?!
2992 }
2993
2994 void
2995 Mixer_UI::add_favorite_processor (ARDOUR::PluginPresetPtr ppp, ProcessorPosition pos)
2996 {
2997         if (!_session || _selection.axes.empty()) {
2998                 return;
2999         }
3000
3001         PluginInfoPtr pip = ppp->_pip;
3002         for (AxisViewSelection::iterator i = _selection.axes.begin(); i != _selection.axes.end(); ++i) {
3003                 boost::shared_ptr<ARDOUR::Route> rt = boost::dynamic_pointer_cast<ARDOUR::Route> ((*i)->stripable());
3004
3005                 if (!rt) {
3006                         continue;
3007                 }
3008
3009                 PluginPtr p = pip->load (*_session);
3010
3011                 if (!p) {
3012                         continue;
3013                 }
3014
3015                 if (ppp->_preset.valid) {
3016                         p->load_preset (ppp->_preset);
3017                 }
3018
3019                 Route::ProcessorStreams err;
3020                 boost::shared_ptr<Processor> processor (new PluginInsert (*_session, p));
3021
3022                 switch (pos) {
3023                         case AddTop:
3024                                 rt->add_processor_by_index (processor, 0, &err, Config->get_new_plugins_active ());
3025                                 break;
3026                         case AddPreFader:
3027                                 rt->add_processor (processor, PreFader, &err, Config->get_new_plugins_active ());
3028                                 break;
3029                         case AddPostFader:
3030                                 {
3031                                         int idx = 0;
3032                                         int pos = 0;
3033                                         for (;;++idx) {
3034                                                 boost::shared_ptr<Processor> np = rt->nth_processor (idx);
3035                                                 if (!np) {
3036                                                         break;
3037                                                 }
3038                                                 if (!np->display_to_user()) {
3039                                                         continue;
3040                                                 }
3041                                                 if (boost::dynamic_pointer_cast<Amp> (np) && // Fader, not Trim
3042                                                                 boost::dynamic_pointer_cast<Amp> (np)->gain_control()->parameter().type() == GainAutomation) {
3043                                                         break;
3044                                                 }
3045                                                 ++pos;
3046                                         }
3047                                         rt->add_processor_by_index (processor, ++pos, &err, Config->get_new_plugins_active ());
3048                                 }
3049                                 break;
3050                         case AddBottom:
3051                                 rt->add_processor_by_index (processor, -1, &err, Config->get_new_plugins_active ());
3052                                 break;
3053                 }
3054         }
3055 }
3056
3057 bool
3058 PluginTreeStore::row_drop_possible_vfunc(const Gtk::TreeModel::Path& dest, const Gtk::SelectionData& data) const
3059 {
3060         if (data.get_target() != "GTK_TREE_MODEL_ROW") {
3061                 return false;
3062         }
3063
3064         // only allow to re-order top-level items
3065         TreePath src;
3066         if (TreePath::get_from_selection_data (data, src)) {
3067                 if (src.up() && src.up()) {
3068                         return false;
3069                 }
3070         }
3071
3072         // don't allow to drop as child-rows.
3073         Gtk::TreeModel::Path _dest = dest; // un const
3074         const bool is_child = _dest.up (); // explicit bool for clang
3075         if (!is_child || _dest.empty ()) {
3076                 return true;
3077         }
3078         return false;
3079 }
3080
3081 void
3082 Mixer_UI::plugin_drop (const Glib::RefPtr<Gdk::DragContext>&, const Gtk::SelectionData& data)
3083 {
3084         if (data.get_target() != "PluginPresetPtr") {
3085                 return;
3086         }
3087         if (data.get_length() != sizeof (PluginPresetPtr)) {
3088                 return;
3089         }
3090         const void *d = data.get_data();
3091         const PluginPresetPtr ppp = *(static_cast<const PluginPresetPtr*> (d));
3092
3093         PluginManager::PluginStatusType status = PluginManager::Favorite;
3094         PluginManager& manager (PluginManager::instance());
3095
3096         manager.set_status (ppp->_pip->type, ppp->_pip->unique_id, status);
3097         manager.save_statuses ();
3098 }
3099
3100 void
3101 Mixer_UI::do_vca_assign (boost::shared_ptr<VCA> vca)
3102 {
3103         /* call protected MixerActor:: method */
3104         vca_assign (vca);
3105 }
3106
3107 void
3108 Mixer_UI::do_vca_unassign (boost::shared_ptr<VCA> vca)
3109 {
3110         /* call protected MixerActor:: method */
3111         vca_unassign (vca);
3112 }
3113
3114 void
3115 Mixer_UI::show_spill (boost::shared_ptr<Stripable> s)
3116 {
3117         boost::shared_ptr<Stripable> ss = spilled_strip.lock();
3118         if (ss != s) {
3119                 spilled_strip = s;
3120                 show_spill_change (s); /* EMIT SIGNAL */
3121                 if (s) {
3122                         _group_tabs->hide ();
3123                 } else {
3124                         _group_tabs->show ();
3125                 }
3126                 redisplay_track_list ();
3127         }
3128 }
3129
3130 bool
3131 Mixer_UI::showing_spill_for (boost::shared_ptr<Stripable> s) const
3132 {
3133         return s == spilled_strip.lock();
3134 }
3135
3136 void
3137 Mixer_UI::register_actions ()
3138 {
3139         Glib::RefPtr<ActionGroup> group = ActionManager::create_action_group (bindings, X_("Mixer"));
3140
3141         ActionManager::register_action (group, "solo", _("Toggle Solo on Mixer-Selected Tracks/Busses"), sigc::mem_fun (*this, &Mixer_UI::solo_action));
3142         ActionManager::register_action (group, "mute", _("Toggle Mute on Mixer-Selected Tracks/Busses"), sigc::mem_fun (*this, &Mixer_UI::mute_action));
3143         ActionManager::register_action (group, "recenable", _("Toggle Rec-enable on Mixer-Selected Tracks/Busses"), sigc::mem_fun (*this, &Mixer_UI::rec_enable_action));
3144         ActionManager::register_action (group, "increment-gain", _("Decrease Gain on Mixer-Selected Tracks/Busses"), sigc::mem_fun (*this, &Mixer_UI::step_gain_up_action));
3145         ActionManager::register_action (group, "decrement-gain", _("Increase Gain on Mixer-Selected Tracks/Busses"), sigc::mem_fun (*this, &Mixer_UI::step_gain_down_action));
3146         ActionManager::register_action (group, "unity-gain", _("Set Gain to 0dB on Mixer-Selected Tracks/Busses"), sigc::mem_fun (*this, &Mixer_UI::unity_gain_action));
3147
3148
3149         ActionManager::register_action (group, "copy-processors", _("Copy Selected Processors"), sigc::mem_fun (*this, &Mixer_UI::copy_processors));
3150         ActionManager::register_action (group, "cut-processors", _("Cut Selected Processors"), sigc::mem_fun (*this, &Mixer_UI::cut_processors));
3151         ActionManager::register_action (group, "paste-processors", _("Paste Selected Processors"), sigc::mem_fun (*this, &Mixer_UI::paste_processors));
3152         ActionManager::register_action (group, "delete-processors", _("Delete Selected Processors"), sigc::mem_fun (*this, &Mixer_UI::delete_processors));
3153         ActionManager::register_action (group, "select-all-processors", _("Select All (visible) Processors"), sigc::mem_fun (*this, &Mixer_UI::select_all_processors));
3154         ActionManager::register_action (group, "toggle-processors", _("Toggle Selected Processors"), sigc::mem_fun (*this, &Mixer_UI::toggle_processors));
3155         ActionManager::register_action (group, "ab-plugins", _("Toggle Selected Plugins"), sigc::mem_fun (*this, &Mixer_UI::ab_plugins));
3156         ActionManager::register_action (group, "select-none", _("Deselect all strips and processors"), sigc::mem_fun (*this, &Mixer_UI::select_none));
3157
3158         ActionManager::register_action (group, "select-next-stripable", _("Select Next Mixer Strip"), sigc::mem_fun (*this, &Mixer_UI::select_next_strip));
3159         ActionManager::register_action (group, "select-prev-stripable", _("Scroll Previous Mixer Strip"), sigc::mem_fun (*this, &Mixer_UI::select_prev_strip));
3160
3161         ActionManager::register_action (group, "scroll-left", _("Scroll Mixer Window to the left"), sigc::mem_fun (*this, &Mixer_UI::scroll_left));
3162         ActionManager::register_action (group, "scroll-right", _("Scroll Mixer Window to the right"), sigc::mem_fun (*this, &Mixer_UI::scroll_right));
3163
3164         ActionManager::register_action (group, "toggle-midi-input-active", _("Toggle MIDI Input Active for Mixer-Selected Tracks/Busses"),
3165                                    sigc::bind (sigc::mem_fun (*this, &Mixer_UI::toggle_midi_input_active), false));
3166
3167         ActionManager::register_toggle_action (group, X_("ToggleMixerList"), _("Mixer: Show Mixer List"), sigc::mem_fun (*this, &Mixer_UI::toggle_mixer_list));
3168
3169         ActionManager::register_toggle_action (group, X_("ToggleVCAPane"), _("Mixer: Show VCAs"), sigc::mem_fun (*this, &Mixer_UI::toggle_vcas));
3170
3171 #ifdef MIXBUS
3172         ActionManager::register_toggle_action (group, X_("ToggleMixbusPane"), _("Mixer: Show Mixbusses"), sigc::mem_fun (*this, &Mixer_UI::toggle_mixbuses));
3173 #endif
3174
3175         ActionManager::register_toggle_action (group, X_("ToggleMonitorSection"), _("Mixer: Show Monitor Section"), sigc::mem_fun (*this, &Mixer_UI::toggle_monitor_section));
3176 }
3177
3178 void
3179 Mixer_UI::load_bindings ()
3180 {
3181         bindings = Bindings::get_bindings (X_("Mixer"));
3182 }
3183
3184 template<class T> void
3185 Mixer_UI::control_action (boost::shared_ptr<T> (Stripable::*get_control)() const)
3186 {
3187         boost::shared_ptr<ControlList> cl (new ControlList);
3188         boost::shared_ptr<AutomationControl> ac;
3189         bool val = false;
3190         bool have_val = false;
3191
3192         set_axis_targets_for_operation ();
3193
3194         BOOST_FOREACH(AxisView* r, _axis_targets) {
3195                 boost::shared_ptr<Stripable> s = r->stripable();
3196                 if (s) {
3197                         ac = (s.get()->*get_control)();
3198                         if (ac) {
3199                                 cl->push_back (ac);
3200                                 if (!have_val) {
3201                                         val = !ac->get_value();
3202                                         have_val = true;
3203                                 }
3204                         }
3205                 }
3206         }
3207
3208         _session->set_controls (cl,  val, Controllable::UseGroup);
3209 }
3210
3211 void
3212 Mixer_UI::solo_action ()
3213 {
3214         control_action (&Stripable::solo_control);
3215 }
3216
3217 void
3218 Mixer_UI::mute_action ()
3219 {
3220         control_action (&Stripable::mute_control);
3221 }
3222
3223 void
3224 Mixer_UI::rec_enable_action ()
3225 {
3226         control_action (&Stripable::rec_enable_control);
3227 }
3228
3229 AutomationControlSet
3230 Mixer_UI::selected_gaincontrols ()
3231 {
3232         set_axis_targets_for_operation ();
3233         AutomationControlSet rv;
3234         BOOST_FOREACH(AxisView* r, _axis_targets) {
3235                 MixerStrip* ms = dynamic_cast<MixerStrip*> (r);
3236                 if (ms) {
3237                         boost::shared_ptr<GainControl> ac (ms->route()->gain_control());
3238                         ControlList cl (ac->grouped_controls());
3239                         for (ControlList::const_iterator c = cl.begin(); c != cl.end (); ++c) {
3240                                 rv.insert (*c);
3241                         }
3242                         rv.insert (ac);
3243                 }
3244         }
3245         return rv;
3246 }
3247
3248 void
3249 Mixer_UI::step_gain_up_action ()
3250 {
3251         AutomationControlSet acs = selected_gaincontrols ();
3252         for (AutomationControlSet::const_iterator i = acs.begin(); i != acs.end (); ++i) {
3253                 boost::shared_ptr<GainControl> ac = boost::dynamic_pointer_cast<GainControl> (*i);
3254                 assert (ac);
3255                 ac->set_value (dB_to_coefficient (accurate_coefficient_to_dB (ac->get_value()) + 0.1), Controllable::NoGroup);
3256         }
3257 }
3258
3259 void
3260 Mixer_UI::step_gain_down_action ()
3261 {
3262         AutomationControlSet acs = selected_gaincontrols ();
3263         for (AutomationControlSet::const_iterator i = acs.begin(); i != acs.end (); ++i) {
3264                 boost::shared_ptr<GainControl> ac = boost::dynamic_pointer_cast<GainControl> (*i);
3265                 assert (ac);
3266                 ac->set_value (dB_to_coefficient (accurate_coefficient_to_dB (ac->get_value()) - 0.1), Controllable::NoGroup);
3267         }
3268 }
3269
3270 void
3271 Mixer_UI::unity_gain_action ()
3272 {
3273         set_axis_targets_for_operation ();
3274
3275         BOOST_FOREACH(AxisView* r, _axis_targets) {
3276                 boost::shared_ptr<Stripable> s = r->stripable();
3277                 if (s) {
3278                         boost::shared_ptr<AutomationControl> ac = s->gain_control();
3279                         if (ac) {
3280                                 ac->set_value (1.0, Controllable::UseGroup);
3281                         }
3282                 }
3283         }
3284 }
3285
3286 void
3287 Mixer_UI::copy_processors ()
3288 {
3289         set_axis_targets_for_operation ();
3290
3291         BOOST_FOREACH(AxisView* r, _axis_targets) {
3292                 MixerStrip* ms = dynamic_cast<MixerStrip*> (r);
3293                 if (ms) {
3294                         ms->copy_processors ();
3295                 }
3296         }
3297 }
3298 void
3299 Mixer_UI::cut_processors ()
3300 {
3301         set_axis_targets_for_operation ();
3302
3303         BOOST_FOREACH(AxisView* r, _axis_targets) {
3304                 MixerStrip* ms = dynamic_cast<MixerStrip*> (r);
3305                 if (ms) {
3306                         ms->cut_processors ();
3307                 }
3308         }
3309 }
3310 void
3311 Mixer_UI::paste_processors ()
3312 {
3313         set_axis_targets_for_operation ();
3314
3315         BOOST_FOREACH(AxisView* r, _axis_targets) {
3316                 MixerStrip* ms = dynamic_cast<MixerStrip*> (r);
3317                 if (ms) {
3318                         ms->paste_processors ();
3319                 }
3320         }
3321 }
3322 void
3323 Mixer_UI::select_all_processors ()
3324 {
3325         set_axis_targets_for_operation ();
3326
3327         BOOST_FOREACH(AxisView* r, _axis_targets) {
3328                 MixerStrip* ms = dynamic_cast<MixerStrip*> (r);
3329                 if (ms) {
3330                         ms->select_all_processors ();
3331                 }
3332         }
3333 }
3334 void
3335 Mixer_UI::toggle_processors ()
3336 {
3337         set_axis_targets_for_operation ();
3338
3339         BOOST_FOREACH(AxisView* r, _axis_targets) {
3340                 MixerStrip* ms = dynamic_cast<MixerStrip*> (r);
3341                 if (ms) {
3342                         ms->toggle_processors ();
3343                 }
3344         }
3345 }
3346 void
3347 Mixer_UI::ab_plugins ()
3348 {
3349         set_axis_targets_for_operation ();
3350
3351         BOOST_FOREACH(AxisView* r, _axis_targets) {
3352                 MixerStrip* ms = dynamic_cast<MixerStrip*> (r);
3353                 if (ms) {
3354                         ms->ab_plugins ();
3355                 }
3356         }
3357 }
3358
3359 void
3360 Mixer_UI::vca_assign (boost::shared_ptr<VCA> vca)
3361 {
3362         set_axis_targets_for_operation ();
3363         BOOST_FOREACH(AxisView* r, _axis_targets) {
3364                 MixerStrip* ms = dynamic_cast<MixerStrip*> (r);
3365                 if (ms) {
3366                         ms->vca_assign (vca);
3367                 }
3368         }
3369 }
3370
3371 void
3372 Mixer_UI::vca_unassign (boost::shared_ptr<VCA> vca)
3373 {
3374         set_axis_targets_for_operation ();
3375         BOOST_FOREACH(AxisView* r, _axis_targets) {
3376                 MixerStrip* ms = dynamic_cast<MixerStrip*> (r);
3377                 if (ms) {
3378                         ms->vca_unassign (vca);
3379                 }
3380         }
3381 }