gtk2_ardour/midi_time_axis.cc

   1 /*
   2     Copyright (C) 2000 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 #include <cstdlib>
  20 #include <cmath>
  21
  22 #include <algorithm>
  23 #include <string>
  24 #include <vector>
  25
  26 #include <sigc++/bind.h>
  27
  28 #include "pbd/error.h"
  29 #include "pbd/stl_delete.h"
  30 #include "pbd/whitespace.h"
  31 #include "pbd/basename.h"
  32 #include "pbd/enumwriter.h"
  33 #include "pbd/memento_command.h"
  34
  35 #include <gtkmm2ext/gtk_ui.h>
  36 #include <gtkmm2ext/selector.h>
  37 #include <gtkmm2ext/stop_signal.h>
  38 #include <gtkmm2ext/bindable_button.h>
  39 #include <gtkmm2ext/utils.h>
  40
  41 #include "ardour/midi_playlist.h"
  42 #include "ardour/midi_diskstream.h"
  43 #include "ardour/midi_patch_manager.h"
  44 #include "ardour/midi_source.h"
  45 #include "ardour/processor.h"
  46 #include "ardour/ladspa_plugin.h"
  47 #include "ardour/location.h"
  48 #include "ardour/playlist.h"
  49 #include "ardour/region_factory.h"
  50 #include "ardour/session.h"
  51 #include "ardour/session_playlist.h"
  52 #include "ardour/tempo.h"
  53 #include "ardour/utils.h"
  54
  55 #include "add_midi_cc_track_dialog.h"
  56 #include "ardour_ui.h"
  57 #include "automation_line.h"
  58 #include "automation_time_axis.h"
  59 #include "canvas-note-event.h"
  60 #include "canvas_impl.h"
  61 #include "crossfade_view.h"
  62 #include "editor.h"
  63 #include "enums.h"
  64 #include "ghostregion.h"
  65 #include "gui_thread.h"
  66 #include "keyboard.h"
  67 #include "midi_scroomer.h"
  68 #include "midi_streamview.h"
  69 #include "midi_region_view.h"
  70 #include "midi_time_axis.h"
  71 #include "piano_roll_header.h"
  72 #include "playlist_selector.h"
  73 #include "plugin_selector.h"
  74 #include "plugin_ui.h"
  75 #include "point_selection.h"
  76 #include "prompter.h"
  77 #include "region_view.h"
  78 #include "rgb_macros.h"
  79 #include "selection.h"
  80 #include "simplerect.h"
  81 #include "utils.h"
  82
  83 #include "ardour/midi_track.h"
  84
  85 #include "i18n.h"
  86
  87 using namespace ARDOUR;
  88 using namespace PBD;
  89 using namespace Gtk;
  90 using namespace Editing;
  91
  92 // Minimum height at which a control is displayed
  93 static const uint32_t MIDI_CONTROLS_BOX_MIN_HEIGHT = 162;
  94 static const uint32_t KEYBOARD_MIN_HEIGHT = 140;
  95
  96 MidiTimeAxisView::MidiTimeAxisView (PublicEditor& ed, Session* sess,
  97                 boost::shared_ptr<Route> rt, Canvas& canvas)
  98         : AxisView(sess) // virtually inherited
  99         , RouteTimeAxisView(ed, sess, rt, canvas)
 100         , _ignore_signals(false)
 101         , _range_scroomer(0)
 102         , _piano_roll_header(0)
 103         , _note_mode(Sustained)
 104         , _note_mode_item(0)
 105         , _percussion_mode_item(0)
 106         , _color_mode(MeterColors)
 107         , _meter_color_mode_item(0)
 108         , _channel_color_mode_item(0)
 109         , _track_color_mode_item(0)
 110         , _step_edit_item (0)
 111         , _midi_thru_item (0)
 112         , default_channel_menu (0)
 113 {
 114         subplugin_menu.set_name ("ArdourContextMenu");
 115
 116         _view = new MidiStreamView (*this);
 117
 118         ignore_toggle = false;
 119         _ignore_toggle_parameter = false;
 120
 121         mute_button->set_active (false);
 122         solo_button->set_active (false);
 123
 124         step_edit_insert_position = 0;
 125
 126         if (is_midi_track()) {
 127                 controls_ebox.set_name ("MidiTimeAxisViewControlsBaseUnselected");
 128                 _note_mode = midi_track()->note_mode();
 129         } else { // MIDI bus (which doesn't exist yet..)
 130                 controls_ebox.set_name ("MidiBusControlsBaseUnselected");
 131         }
 132
 133         /* map current state of the route */
 134
 135         processors_changed (RouteProcessorChange ());
 136
 137         ensure_xml_node ();
 138
 139         set_state (*xml_node, Stateful::loading_state_version);
 140
 141         _route->processors_changed.connect (*this, ui_bind (&MidiTimeAxisView::processors_changed, this, _1), gui_context());
 142
 143         if (is_track()) {
 144                 _piano_roll_header = new PianoRollHeader(*midi_view());
 145                 _range_scroomer = new MidiScroomer(midi_view()->note_range_adjustment);
 146
 147                 controls_hbox.pack_start(*_range_scroomer);
 148                 controls_hbox.pack_start(*_piano_roll_header);
 149
 150                 controls_ebox.set_name ("MidiTrackControlsBaseUnselected");
 151                 controls_base_selected_name = "MidiTrackControlsBaseSelected";
 152                 controls_base_unselected_name = "MidiTrackControlsBaseUnselected";
 153
 154                 midi_view()->NoteRangeChanged.connect (sigc::mem_fun(*this, &MidiTimeAxisView::update_range));
 155
 156                 /* ask for notifications of any new RegionViews */
 157                 _view->RegionViewAdded.connect (sigc::mem_fun(*this, &MidiTimeAxisView::region_view_added));
 158                 _view->attach ();
 159         }
 160
 161         HBox* midi_controls_hbox = manage(new HBox());
 162
 163         MIDI::Name::MidiPatchManager& patch_manager = MIDI::Name::MidiPatchManager::instance();
 164
 165         MIDI::Name::MasterDeviceNames::Models::const_iterator m = patch_manager.all_models().begin();
 166         for (; m != patch_manager.all_models().end(); ++m) {
 167                 _model_selector.append_text(m->c_str());
 168         }
 169
 170         _model_selector.signal_changed().connect(sigc::mem_fun(*this, &MidiTimeAxisView::model_changed));
 171
 172         _custom_device_mode_selector.signal_changed().connect(
 173                         sigc::mem_fun(*this, &MidiTimeAxisView::custom_device_mode_changed));
 174
 175         // TODO: persist the choice
 176         // this initializes the comboboxes and sends out the signal
 177         _model_selector.set_active(0);
 178
 179         midi_controls_hbox->pack_start(_channel_selector, true, false);
 180         if (!patch_manager.all_models().empty()) {
 181                 _midi_controls_box.pack_start(_model_selector, true, false);
 182                 _midi_controls_box.pack_start(_custom_device_mode_selector, true, false);
 183         }
 184
 185         _midi_controls_box.pack_start(*midi_controls_hbox, true, true);
 186
 187         controls_vbox.pack_start(_midi_controls_box, false, false);
 188
 189         boost::shared_ptr<MidiDiskstream> diskstream = midi_track()->midi_diskstream();
 190
 191         // restore channel selector settings
 192         _channel_selector.set_channel_mode(diskstream->get_channel_mode(),
 193                         diskstream->get_channel_mask());
 194         _channel_selector.mode_changed.connect(
 195                 sigc::mem_fun(*midi_track()->midi_diskstream(), &MidiDiskstream::set_channel_mode));
 196
 197         XMLProperty *prop;
 198         if ((prop = xml_node->property ("color-mode")) != 0) {
 199                 _color_mode = ColorMode (string_2_enum(prop->value(), _color_mode));
 200                 if (_color_mode == ChannelColors) {
 201                         _channel_selector.set_channel_colors(CanvasNoteEvent::midi_channel_colors);
 202                 }
 203         }
 204
 205         if ((prop = xml_node->property ("note-mode")) != 0) {
 206                 _note_mode = NoteMode (string_2_enum(prop->value(), _note_mode));
 207                 if (_percussion_mode_item) {
 208                         _percussion_mode_item->set_active (_note_mode == Percussive);
 209                 }
 210         }
 211 }
 212
 213 MidiTimeAxisView::~MidiTimeAxisView ()
 214 {
 215         delete _piano_roll_header;
 216         _piano_roll_header = 0;
 217
 218         delete _range_scroomer;
 219         _range_scroomer = 0;
 220 }
 221
 222 void MidiTimeAxisView::model_changed()
 223 {
 224         std::list<std::string> device_modes = MIDI::Name::MidiPatchManager::instance()
 225                 .custom_device_mode_names_by_model(_model_selector.get_active_text());
 226
 227         _custom_device_mode_selector.clear_items();
 228
 229         for (std::list<std::string>::const_iterator i = device_modes.begin();
 230                         i != device_modes.end(); ++i) {
 231                 cerr << "found custom device mode " << *i << " thread_id: " << pthread_self() << endl;
 232                 _custom_device_mode_selector.append_text(*i);
 233         }
 234
 235         _custom_device_mode_selector.set_active(0);
 236 }
 237
 238 void MidiTimeAxisView::custom_device_mode_changed()
 239 {
 240         _midi_patch_settings_changed.emit(_model_selector.get_active_text(),
 241                         _custom_device_mode_selector.get_active_text());
 242 }
 243
 244 MidiStreamView*
 245 MidiTimeAxisView::midi_view()
 246 {
 247         return dynamic_cast<MidiStreamView*>(_view);
 248 }
 249
 250 guint32
 251 MidiTimeAxisView::show_at (double y, int& nth, Gtk::VBox *parent)
 252 {
 253         ensure_xml_node ();
 254         xml_node->add_property ("shown-editor", "yes");
 255
 256         guint32 ret = TimeAxisView::show_at (y, nth, parent);
 257         return ret;
 258 }
 259
 260 void
 261 MidiTimeAxisView::hide ()
 262 {
 263         ensure_xml_node ();
 264         xml_node->add_property ("shown-editor", "no");
 265
 266         TimeAxisView::hide ();
 267 }
 268
 269 void
 270 MidiTimeAxisView::set_height (uint32_t h)
 271 {
 272         RouteTimeAxisView::set_height (h);
 273
 274         if (height >= MIDI_CONTROLS_BOX_MIN_HEIGHT) {
 275                 _midi_controls_box.show();
 276         } else {
 277                 _midi_controls_box.hide();
 278         }
 279
 280         if (height >= KEYBOARD_MIN_HEIGHT) {
 281                 if (is_track() && _range_scroomer)
 282                         _range_scroomer->show();
 283                 if (is_track() && _piano_roll_header)
 284                         _piano_roll_header->show();
 285         } else {
 286                 if (is_track() && _range_scroomer)
 287                         _range_scroomer->hide();
 288                 if (is_track() && _piano_roll_header)
 289                         _piano_roll_header->hide();
 290         }
 291 }
 292
 293 void
 294 MidiTimeAxisView::append_extra_display_menu_items ()
 295 {
 296         using namespace Menu_Helpers;
 297
 298         MenuList& items = display_menu->items();
 299
 300         // Note range
 301         Menu *range_menu = manage(new Menu);
 302         MenuList& range_items = range_menu->items();
 303         range_menu->set_name ("ArdourContextMenu");
 304
 305         range_items.push_back (MenuElem (_("Show Full Range"), sigc::bind (
 306                         sigc::mem_fun(*this, &MidiTimeAxisView::set_note_range),
 307                         MidiStreamView::FullRange)));
 308
 309         range_items.push_back (MenuElem (_("Fit Contents"), sigc::bind (
 310                         sigc::mem_fun(*this, &MidiTimeAxisView::set_note_range),
 311                         MidiStreamView::ContentsRange)));
 312
 313         items.push_back (MenuElem (_("Note range"), *range_menu));
 314         items.push_back (MenuElem (_("Note mode"), *build_note_mode_menu()));
 315         items.push_back (MenuElem (_("Default Channel"), *build_def_channel_menu()));
 316
 317         items.push_back (CheckMenuElem (_("MIDI Thru"), sigc::mem_fun(*this, &MidiTimeAxisView::toggle_midi_thru)));
 318         _midi_thru_item = dynamic_cast<CheckMenuItem*>(&items.back());
 319 }
 320
 321 Gtk::Menu*
 322 MidiTimeAxisView::build_def_channel_menu ()
 323 {
 324         using namespace Menu_Helpers;
 325
 326         default_channel_menu = manage (new Menu ());
 327
 328         uint8_t defchn = midi_track()->default_channel();
 329         MenuList& def_channel_items = default_channel_menu->items();
 330         RadioMenuItem* item;
 331         RadioMenuItem::Group dc_group;
 332
 333         for (int i = 0; i < 16; ++i) {
 334                 char buf[4];
 335                 snprintf (buf, sizeof (buf), "%d", i+1);
 336
 337                 def_channel_items.push_back (RadioMenuElem (dc_group, buf,
 338                                                             sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_default_channel), i)));
 339                 item = dynamic_cast<RadioMenuItem*>(&def_channel_items.back());
 340                 item->set_active ((i == defchn));
 341         }
 342
 343         return default_channel_menu;
 344 }
 345
 346 void
 347 MidiTimeAxisView::set_default_channel (int chn)
 348 {
 349         midi_track()->set_default_channel (chn);
 350 }
 351
 352 void
 353 MidiTimeAxisView::toggle_midi_thru ()
 354 {
 355         if (!_midi_thru_item) {
 356                 return;
 357         }
 358
 359         bool view_yn = _midi_thru_item->get_active();
 360         if (view_yn != midi_track()->midi_thru()) {
 361                 midi_track()->set_midi_thru (view_yn);
 362         }
 363 }
 364
 365 void
 366 MidiTimeAxisView::build_automation_action_menu ()
 367 {
 368         using namespace Menu_Helpers;
 369
 370         RouteTimeAxisView::build_automation_action_menu ();
 371
 372         MenuList& automation_items = automation_action_menu->items();
 373
 374         automation_items.push_back (SeparatorElem());
 375         automation_items.push_back (MenuElem (_("Show Controller..."),
 376                         sigc::mem_fun(*this, &MidiTimeAxisView::add_cc_track)));
 377
 378         add_basic_parameter_menu_item (automation_items, _("Program Change"), Evoral::Parameter (MidiPgmChangeAutomation));
 379         add_basic_parameter_menu_item (automation_items, _("Bender"), Evoral::Parameter (MidiPitchBenderAutomation));
 380         add_basic_parameter_menu_item (automation_items, _("Pressure"), Evoral::Parameter (MidiChannelPressureAutomation));
 381 }
 382
 383 void
 384 MidiTimeAxisView::add_basic_parameter_menu_item (Menu_Helpers::MenuList& items, const string& label, Evoral::Parameter param)
 385 {
 386         items.push_back (Menu_Helpers::CheckMenuElem
 387                          (label, sigc::bind (sigc::mem_fun
 388                                              (*this, &MidiTimeAxisView::toggle_parameter_track), param)));
 389
 390         // cerr << "Create a new menu item from " << param.type() << '/' << param.id() << '/' << (int) param.channel() << endl;
 391
 392         uint16_t selected_channels = _channel_selector.get_selected_channels();
 393         bool visible = false;
 394
 395         for (uint8_t i = 0; i < 16; i++) {
 396                 if (selected_channels & (0x0001 << i)) {
 397                         Evoral::Parameter param_with_channel(param.type(), i, param.id());
 398
 399                         // cerr << "\tChecking on channel " << (int) i << " via " << param_with_channel.type() << '/' << param_with_channel.id() << endl;
 400
 401                         RouteAutomationNode* node = automation_track (param_with_channel);
 402
 403                         if (node) {
 404                                 if (node->track->marked_for_display()) {
 405                                         visible = true;
 406                                         // cerr << "\tGot a track, and it appears visible\n";
 407                                         break;
 408                                 } else {
 409                                         // cerr << "\tGot a track, and it appears hidden\n";
 410                                 }
 411                         } else {
 412                                 // cerr << "\tno track found\n";
 413                         }
 414                 }
 415         }
 416
 417         CheckMenuItem* cmi = static_cast<CheckMenuItem*>(&items.back());
 418         cmi->set_active (visible);
 419
 420         pair<ParameterMenuMap::iterator,bool> result;
 421         result = parameter_menu_map.insert (pair<Evoral::Parameter,CheckMenuItem*> (param, cmi));
 422         if (!result.second) {
 423                 /* it already exists, but we're asssigning a new menu item to it */
 424                 result.first->second = cmi;
 425         }
 426 }
 427
 428 Gtk::Menu*
 429 MidiTimeAxisView::build_note_mode_menu()
 430 {
 431         using namespace Menu_Helpers;
 432
 433         Menu* mode_menu = manage (new Menu);
 434         MenuList& items = mode_menu->items();
 435         mode_menu->set_name ("ArdourContextMenu");
 436
 437         RadioMenuItem::Group mode_group;
 438         items.push_back (RadioMenuElem (mode_group, _("Sustained"),
 439                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_note_mode), Sustained)));
 440         _note_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 441         _note_mode_item->set_active(_note_mode == Sustained);
 442
 443         items.push_back (RadioMenuElem (mode_group, _("Percussive"),
 444                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_note_mode), Percussive)));
 445         _percussion_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 446         _percussion_mode_item->set_active(_note_mode == Percussive);
 447
 448         return mode_menu;
 449 }
 450
 451 Gtk::Menu*
 452 MidiTimeAxisView::build_color_mode_menu()
 453 {
 454         using namespace Menu_Helpers;
 455
 456         Menu* mode_menu = manage (new Menu);
 457         MenuList& items = mode_menu->items();
 458         mode_menu->set_name ("ArdourContextMenu");
 459
 460         RadioMenuItem::Group mode_group;
 461         items.push_back (RadioMenuElem (mode_group, _("Meter Colors"),
 462                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_color_mode), MeterColors)));
 463         _meter_color_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 464         _meter_color_mode_item->set_active(_color_mode == MeterColors);
 465
 466         items.push_back (RadioMenuElem (mode_group, _("Channel Colors"),
 467                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_color_mode), ChannelColors)));
 468         _channel_color_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 469         _channel_color_mode_item->set_active(_color_mode == ChannelColors);
 470
 471         items.push_back (RadioMenuElem (mode_group, _("Track Color"),
 472                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_color_mode), TrackColor)));
 473         _channel_color_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 474         _channel_color_mode_item->set_active(_color_mode == TrackColor);
 475
 476         return mode_menu;
 477 }
 478
 479 void
 480 MidiTimeAxisView::set_note_mode(NoteMode mode)
 481 {
 482         if (_note_mode != mode || midi_track()->note_mode() != mode) {
 483                 _note_mode = mode;
 484                 midi_track()->set_note_mode(mode);
 485                 xml_node->add_property ("note-mode", enum_2_string(_note_mode));
 486                 _view->redisplay_diskstream();
 487         }
 488 }
 489
 490 void
 491 MidiTimeAxisView::set_color_mode(ColorMode mode)
 492 {
 493         if (_color_mode != mode) {
 494                 if (mode == ChannelColors) {
 495                         _channel_selector.set_channel_colors(CanvasNoteEvent::midi_channel_colors);
 496                 } else {
 497                         _channel_selector.set_default_channel_color();
 498                 }
 499
 500                 _color_mode = mode;
 501                 xml_node->add_property ("color-mode", enum_2_string(_color_mode));
 502                 _view->redisplay_diskstream();
 503         }
 504 }
 505
 506 void
 507 MidiTimeAxisView::set_note_range(MidiStreamView::VisibleNoteRange range)
 508 {
 509         if (!_ignore_signals)
 510                 midi_view()->set_note_range(range);
 511 }
 512
 513
 514 void
 515 MidiTimeAxisView::update_range()
 516 {
 517         MidiGhostRegion* mgr;
 518
 519         for(list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 520                 if ((mgr = dynamic_cast<MidiGhostRegion*>(*i)) != 0) {
 521                         mgr->update_range();
 522                 }
 523         }
 524 }
 525
 526 void
 527 MidiTimeAxisView::show_all_automation ()
 528 {
 529         if (midi_track()) {
 530                 const set<Evoral::Parameter> params = midi_track()->midi_diskstream()->
 531                                 midi_playlist()->contained_automation();
 532
 533                 for (set<Evoral::Parameter>::const_iterator i = params.begin(); i != params.end(); ++i) {
 534                         create_automation_child(*i, true);
 535                 }
 536         }
 537
 538         RouteTimeAxisView::show_all_automation ();
 539 }
 540
 541 void
 542 MidiTimeAxisView::show_existing_automation ()
 543 {
 544         if (midi_track()) {
 545                 const set<Evoral::Parameter> params = midi_track()->midi_diskstream()->
 546                                 midi_playlist()->contained_automation();
 547
 548                 for (set<Evoral::Parameter>::const_iterator i = params.begin(); i != params.end(); ++i) {
 549                         create_automation_child(*i, true);
 550                 }
 551         }
 552
 553         RouteTimeAxisView::show_existing_automation ();
 554 }
 555
 556 /** Prompt for a controller with a dialog and add an automation track for it
 557  */
 558 void
 559 MidiTimeAxisView::add_cc_track()
 560 {
 561         int response;
 562         Evoral::Parameter param(0, 0, 0);
 563
 564         {
 565                 AddMidiCCTrackDialog dialog;
 566                 dialog.set_transient_for (_editor);
 567                 response = dialog.run();
 568
 569                 if (response == Gtk::RESPONSE_ACCEPT)
 570                         param = dialog.parameter();
 571         }
 572
 573         if (param.type() != 0 && response == Gtk::RESPONSE_ACCEPT)
 574                 create_automation_child(param, true);
 575 }
 576
 577 /** Toggle an automation track for the given parameter (pitch bend, channel pressure).
 578  *  Will add track if necessary.
 579  */
 580 void
 581 MidiTimeAxisView::toggle_parameter_track(const Evoral::Parameter& param)
 582 {
 583         if (_ignore_toggle_parameter) {
 584                 return;
 585         }
 586
 587         cerr << "CHANGE VISIBILITY OF " << param.type() << '/' << param.id() << '/' << (int) param.channel() << endl;
 588
 589         if ( !EventTypeMap::instance().is_midi_parameter(param) ) {
 590                 error << "MidiTimeAxisView: unknown automation child "
 591                         << ARDOUR::EventTypeMap::instance().to_symbol(param) << endmsg;
 592                 return;
 593         }
 594
 595         map<Evoral::Parameter,CheckMenuItem*>::iterator x = parameter_menu_map.find (param);
 596         if (x == parameter_menu_map.end()) {
 597                 cerr << "Param not found in pm map\n";
 598                 return;
 599         }
 600
 601         bool yn = x->second->get_active ();
 602         cerr << "Menu item state for " << param.type() << '/' << param.id() << '/' << (int) param.channel() << ' ' << yn << endl;
 603
 604         cerr << "toggle param " << param.type() << '/' << param.id() << '/' << (int) param.channel() << " from " << !yn << " to " << yn << endl;
 605
 606         // create the parameter lane for each selected channel
 607         uint16_t selected_channels = _channel_selector.get_selected_channels();
 608
 609         for (uint8_t i = 0; i < 16; i++) {
 610                 if (selected_channels & (0x0001 << i)) {
 611                         Evoral::Parameter param_with_channel(param.type(), i, param.id());
 612
 613                         RouteAutomationNode* node = automation_track (param_with_channel);
 614
 615                         if (!node) {
 616                                 cerr << "\tNO EXISTING TRACK FOR chn " << (int) i << endl;
 617                                 if (yn) {
 618                                         create_automation_child (param_with_channel, true);
 619                                 }
 620                         } else {
 621                                 cerr << "\tTRACK EXISTS, set its menu item to " << yn << " to change its visibilty\n";
 622                                 node->menu_item->set_active (yn);
 623                         }
 624                 }
 625         }
 626
 627         _ignore_toggle_parameter = true;
 628         x->second->set_active (yn);
 629         _ignore_toggle_parameter = false;
 630 }
 631
 632 /** Hide an automation track for the given parameter (pitch bend, channel pressure).
 633  */
 634 void
 635 MidiTimeAxisView::create_automation_child (const Evoral::Parameter& param, bool show)
 636 {
 637         /* These controllers are region "automation", so we do not create
 638          * an AutomationList/Line for the track */
 639
 640         if (param.type() == NullAutomation) {
 641                 cerr << "WARNING: Attempt to create NullAutomation child, ignoring" << endl;
 642                 return;
 643         }
 644
 645         AutomationTracks::iterator existing = _automation_tracks.find(param);
 646         if (existing != _automation_tracks.end())
 647                 return;
 648
 649         boost::shared_ptr<AutomationControl> c = _route->get_control (param);
 650
 651         assert(c);
 652
 653         boost::shared_ptr<AutomationTimeAxisView> track(new AutomationTimeAxisView (_session,
 654                         _route, boost::shared_ptr<ARDOUR::Automatable>(), c,
 655                         _editor,
 656                         *this,
 657                         true,
 658                         parent_canvas,
 659                         _route->describe_parameter(param)));
 660
 661         add_automation_child(param, track, show);
 662 }
 663
 664
 665 void
 666 MidiTimeAxisView::route_active_changed ()
 667 {
 668         RouteUI::route_active_changed ();
 669
 670         if (is_track()) {
 671                 if (_route->active()) {
 672                         controls_ebox.set_name ("MidiTrackControlsBaseUnselected");
 673                         controls_base_selected_name = "MidiTrackControlsBaseSelected";
 674                         controls_base_unselected_name = "MidiTrackControlsBaseUnselected";
 675                 } else {
 676                         controls_ebox.set_name ("MidiTrackControlsBaseInactiveUnselected");
 677                         controls_base_selected_name = "MidiTrackControlsBaseInactiveSelected";
 678                         controls_base_unselected_name = "MidiTrackControlsBaseInactiveUnselected";
 679                 }
 680         } else {
 681
 682                 throw; // wha?
 683
 684                 if (_route->active()) {
 685                         controls_ebox.set_name ("BusControlsBaseUnselected");
 686                         controls_base_selected_name = "BusControlsBaseSelected";
 687                         controls_base_unselected_name = "BusControlsBaseUnselected";
 688                 } else {
 689                         controls_ebox.set_name ("BusControlsBaseInactiveUnselected");
 690                         controls_base_selected_name = "BusControlsBaseInactiveSelected";
 691                         controls_base_unselected_name = "BusControlsBaseInactiveUnselected";
 692                 }
 693         }
 694 }
 695
 696 void
 697 MidiTimeAxisView::start_step_editing ()
 698 {
 699         step_edit_insert_position = _editor.get_preferred_edit_position ();
 700         step_edit_beat_pos = 0;
 701         step_edit_region = playlist()->top_region_at (step_edit_insert_position);
 702
 703         if (step_edit_region) {
 704                 RegionView* rv = view()->find_view (step_edit_region);
 705                 step_edit_region_view = dynamic_cast<MidiRegionView*> (rv);
 706         } else {
 707                 step_edit_region_view = 0;
 708         }
 709
 710         midi_track()->set_step_editing (true);
 711 }
 712
 713 void
 714 MidiTimeAxisView::stop_step_editing ()
 715 {
 716         midi_track()->set_step_editing (false);
 717 }
 718
 719 void
 720 MidiTimeAxisView::check_step_edit ()
 721 {
 722         MidiRingBuffer<nframes_t>& incoming (midi_track()->step_edit_ring_buffer());
 723         Evoral::Note<Evoral::MusicalTime> note;
 724         uint8_t* buf;
 725         uint32_t bufsize = 32;
 726
 727         buf = new uint8_t[bufsize];
 728
 729         while (incoming.read_space()) {
 730                 nframes_t time;
 731                 Evoral::EventType type;
 732                 uint32_t size;
 733
 734                 incoming.read_prefix (&time, &type, &size);
 735
 736                 if (size > bufsize) {
 737                         delete [] buf;
 738                         bufsize = size;
 739                         buf = new uint8_t[bufsize];
 740                 }
 741
 742                 incoming.read_contents (size, buf);
 743
 744                 if ((buf[0] & 0xf0) == MIDI_CMD_NOTE_ON) {
 745
 746                         if (step_edit_region == 0) {
 747
 748                                 step_edit_region = add_region (step_edit_insert_position);
 749                                 RegionView* rv = view()->find_view (step_edit_region);
 750
 751                                 if (rv) {
 752                                         step_edit_region_view = dynamic_cast<MidiRegionView*>(rv);
 753                                 } else {
 754                                         fatal << X_("programming error: no view found for new MIDI region") << endmsg;
 755                                         /*NOTREACHED*/
 756                                 }
 757                         }
 758
 759                         if (step_edit_region_view) {
 760
 761                                 bool success;
 762                                 Evoral::MusicalTime beats = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
 763
 764                                 if (!success) {
 765                                         continue;
 766                                 }
 767
 768                                 step_edit_region_view->add_note (buf[0] & 0xf, buf[1], buf[2], step_edit_beat_pos, beats);
 769                                 step_edit_beat_pos += beats;
 770                         }
 771                 }
 772
 773         }
 774 }
 775
 776 void
 777 MidiTimeAxisView::step_edit_rest ()
 778 {
 779         bool success;
 780         Evoral::MusicalTime beats = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
 781         step_edit_beat_pos += beats;
 782 }
 783
 784 boost::shared_ptr<Region>
 785 MidiTimeAxisView::add_region (nframes64_t pos)
 786 {
 787         Editor* real_editor = dynamic_cast<Editor*> (&_editor);
 788
 789         real_editor->begin_reversible_command (_("create region"));
 790         XMLNode &before = playlist()->get_state();
 791
 792         nframes64_t start = pos;
 793         real_editor->snap_to (start, -1);
 794         const Meter& m = _session->tempo_map().meter_at(start);
 795         const Tempo& t = _session->tempo_map().tempo_at(start);
 796         double length = floor (m.frames_per_bar(t, _session->frame_rate()));
 797
 798         const boost::shared_ptr<MidiDiskstream> diskstream =
 799                 boost::dynamic_pointer_cast<MidiDiskstream>(view()->trackview().track()->diskstream());
 800
 801         boost::shared_ptr<Source> src = _session->create_midi_source_for_session (*diskstream.get());
 802
 803         boost::shared_ptr<Region> region = (RegionFactory::create (src, 0, (nframes_t) length,
 804                                                                    PBD::basename_nosuffix(src->name())));
 805
 806         playlist()->add_region (region, start);
 807         XMLNode &after = playlist()->get_state();
 808         _session->add_command (new MementoCommand<Playlist> (*playlist().get(), &before, &after));
 809
 810         real_editor->commit_reversible_command();
 811
 812         return region;
 813 }