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
 120         mute_button->set_active (false);
 121         solo_button->set_active (false);
 122
 123         step_edit_insert_position = 0;
 124
 125         if (is_midi_track()) {
 126                 controls_ebox.set_name ("MidiTimeAxisViewControlsBaseUnselected");
 127                 _note_mode = midi_track()->note_mode();
 128         } else { // MIDI bus (which doesn't exist yet..)
 129                 controls_ebox.set_name ("MidiBusControlsBaseUnselected");
 130         }
 131
 132         /* map current state of the route */
 133
 134         processors_changed (RouteProcessorChange ());
 135
 136         ensure_xml_node ();
 137
 138         set_state (*xml_node, Stateful::loading_state_version);
 139
 140         _route->processors_changed.connect (*this, ui_bind (&MidiTimeAxisView::processors_changed, this, _1), gui_context());
 141
 142         if (is_track()) {
 143                 _piano_roll_header = new PianoRollHeader(*midi_view());
 144                 _range_scroomer = new MidiScroomer(midi_view()->note_range_adjustment);
 145
 146                 controls_hbox.pack_start(*_range_scroomer);
 147                 controls_hbox.pack_start(*_piano_roll_header);
 148
 149                 controls_ebox.set_name ("MidiTrackControlsBaseUnselected");
 150                 controls_base_selected_name = "MidiTrackControlsBaseSelected";
 151                 controls_base_unselected_name = "MidiTrackControlsBaseUnselected";
 152
 153                 midi_view()->NoteRangeChanged.connect (sigc::mem_fun(*this, &MidiTimeAxisView::update_range));
 154
 155                 /* ask for notifications of any new RegionViews */
 156                 _view->RegionViewAdded.connect (sigc::mem_fun(*this, &MidiTimeAxisView::region_view_added));
 157                 _view->attach ();
 158         }
 159
 160         HBox* midi_controls_hbox = manage(new HBox());
 161
 162         MIDI::Name::MidiPatchManager& patch_manager = MIDI::Name::MidiPatchManager::instance();
 163
 164         MIDI::Name::MasterDeviceNames::Models::const_iterator m = patch_manager.all_models().begin();
 165         for (; m != patch_manager.all_models().end(); ++m) {
 166                 _model_selector.append_text(m->c_str());
 167         }
 168
 169         _model_selector.signal_changed().connect(sigc::mem_fun(*this, &MidiTimeAxisView::model_changed));
 170
 171         _custom_device_mode_selector.signal_changed().connect(
 172                         sigc::mem_fun(*this, &MidiTimeAxisView::custom_device_mode_changed));
 173
 174         // TODO: persist the choice
 175         // this initializes the comboboxes and sends out the signal
 176         _model_selector.set_active(0);
 177
 178         midi_controls_hbox->pack_start(_channel_selector, true, false);
 179         if (!patch_manager.all_models().empty()) {
 180                 _midi_controls_box.pack_start(_model_selector, true, false);
 181                 _midi_controls_box.pack_start(_custom_device_mode_selector, true, false);
 182         }
 183
 184         _midi_controls_box.pack_start(*midi_controls_hbox, true, true);
 185
 186         controls_vbox.pack_start(_midi_controls_box, false, false);
 187
 188         boost::shared_ptr<MidiDiskstream> diskstream = midi_track()->midi_diskstream();
 189
 190         // restore channel selector settings
 191         _channel_selector.set_channel_mode(diskstream->get_channel_mode(),
 192                         diskstream->get_channel_mask());
 193         _channel_selector.mode_changed.connect(
 194                 sigc::mem_fun(*midi_track()->midi_diskstream(), &MidiDiskstream::set_channel_mode));
 195
 196         XMLProperty *prop;
 197         if ((prop = xml_node->property ("color-mode")) != 0) {
 198                 _color_mode = ColorMode (string_2_enum(prop->value(), _color_mode));
 199                 if (_color_mode == ChannelColors) {
 200                         _channel_selector.set_channel_colors(CanvasNoteEvent::midi_channel_colors);
 201                 }
 202         }
 203
 204         if ((prop = xml_node->property ("note-mode")) != 0) {
 205                 _note_mode = NoteMode (string_2_enum(prop->value(), _note_mode));
 206                 if (_percussion_mode_item) {
 207                         _percussion_mode_item->set_active (_note_mode == Percussive);
 208                 }
 209         }
 210 }
 211
 212 MidiTimeAxisView::~MidiTimeAxisView ()
 213 {
 214         delete _piano_roll_header;
 215         _piano_roll_header = 0;
 216
 217         delete _range_scroomer;
 218         _range_scroomer = 0;
 219 }
 220
 221 void MidiTimeAxisView::model_changed()
 222 {
 223         std::list<std::string> device_modes = MIDI::Name::MidiPatchManager::instance()
 224                 .custom_device_mode_names_by_model(_model_selector.get_active_text());
 225
 226         _custom_device_mode_selector.clear_items();
 227
 228         for (std::list<std::string>::const_iterator i = device_modes.begin();
 229                         i != device_modes.end(); ++i) {
 230                 cerr << "found custom device mode " << *i << " thread_id: " << pthread_self() << endl;
 231                 _custom_device_mode_selector.append_text(*i);
 232         }
 233
 234         _custom_device_mode_selector.set_active(0);
 235 }
 236
 237 void MidiTimeAxisView::custom_device_mode_changed()
 238 {
 239         _midi_patch_settings_changed.emit(_model_selector.get_active_text(),
 240                         _custom_device_mode_selector.get_active_text());
 241 }
 242
 243 MidiStreamView*
 244 MidiTimeAxisView::midi_view()
 245 {
 246         return dynamic_cast<MidiStreamView*>(_view);
 247 }
 248
 249 guint32
 250 MidiTimeAxisView::show_at (double y, int& nth, Gtk::VBox *parent)
 251 {
 252         ensure_xml_node ();
 253         xml_node->add_property ("shown-editor", "yes");
 254
 255         guint32 ret = TimeAxisView::show_at (y, nth, parent);
 256         return ret;
 257 }
 258
 259 void
 260 MidiTimeAxisView::hide ()
 261 {
 262         ensure_xml_node ();
 263         xml_node->add_property ("shown-editor", "no");
 264
 265         TimeAxisView::hide ();
 266 }
 267
 268 void
 269 MidiTimeAxisView::set_height (uint32_t h)
 270 {
 271         RouteTimeAxisView::set_height (h);
 272
 273         if (height >= MIDI_CONTROLS_BOX_MIN_HEIGHT) {
 274                 _midi_controls_box.show();
 275         } else {
 276                 _midi_controls_box.hide();
 277         }
 278
 279         if (height >= KEYBOARD_MIN_HEIGHT) {
 280                 if (is_track() && _range_scroomer)
 281                         _range_scroomer->show();
 282                 if (is_track() && _piano_roll_header)
 283                         _piano_roll_header->show();
 284         } else {
 285                 if (is_track() && _range_scroomer)
 286                         _range_scroomer->hide();
 287                 if (is_track() && _piano_roll_header)
 288                         _piano_roll_header->hide();
 289         }
 290 }
 291
 292 void
 293 MidiTimeAxisView::append_extra_display_menu_items ()
 294 {
 295         using namespace Menu_Helpers;
 296
 297         MenuList& items = display_menu->items();
 298
 299         // Note range
 300         Menu *range_menu = manage(new Menu);
 301         MenuList& range_items = range_menu->items();
 302         range_menu->set_name ("ArdourContextMenu");
 303
 304         range_items.push_back (MenuElem (_("Show Full Range"), sigc::bind (
 305                         sigc::mem_fun(*this, &MidiTimeAxisView::set_note_range),
 306                         MidiStreamView::FullRange)));
 307
 308         range_items.push_back (MenuElem (_("Fit Contents"), sigc::bind (
 309                         sigc::mem_fun(*this, &MidiTimeAxisView::set_note_range),
 310                         MidiStreamView::ContentsRange)));
 311
 312         items.push_back (MenuElem (_("Note range"), *range_menu));
 313         items.push_back (MenuElem (_("Note mode"), *build_note_mode_menu()));
 314         items.push_back (MenuElem (_("Default Channel"), *build_def_channel_menu()));
 315
 316         items.push_back (CheckMenuElem (_("MIDI Thru"), sigc::mem_fun(*this, &MidiTimeAxisView::toggle_midi_thru)));
 317         _midi_thru_item = dynamic_cast<CheckMenuItem*>(&items.back());
 318 }
 319
 320 Gtk::Menu*
 321 MidiTimeAxisView::build_def_channel_menu ()
 322 {
 323         using namespace Menu_Helpers;
 324
 325         default_channel_menu = manage (new Menu ());
 326
 327         uint8_t defchn = midi_track()->default_channel();
 328         MenuList& def_channel_items = default_channel_menu->items();
 329         RadioMenuItem* item;
 330         RadioMenuItem::Group dc_group;
 331
 332         for (int i = 0; i < 16; ++i) {
 333                 char buf[4];
 334                 snprintf (buf, sizeof (buf), "%d", i+1);
 335
 336                 def_channel_items.push_back (RadioMenuElem (dc_group, buf,
 337                                                             sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_default_channel), i)));
 338                 item = dynamic_cast<RadioMenuItem*>(&def_channel_items.back());
 339                 item->set_active ((i == defchn));
 340         }
 341
 342         return default_channel_menu;
 343 }
 344
 345 void
 346 MidiTimeAxisView::set_default_channel (int chn)
 347 {
 348         midi_track()->set_default_channel (chn);
 349 }
 350
 351 void
 352 MidiTimeAxisView::toggle_midi_thru ()
 353 {
 354         if (!_midi_thru_item) {
 355                 return;
 356         }
 357
 358         bool view_yn = _midi_thru_item->get_active();
 359         if (view_yn != midi_track()->midi_thru()) {
 360                 midi_track()->set_midi_thru (view_yn);
 361         }
 362 }
 363
 364 void
 365 MidiTimeAxisView::build_automation_action_menu ()
 366 {
 367         using namespace Menu_Helpers;
 368
 369         RouteTimeAxisView::build_automation_action_menu ();
 370
 371         MenuList& automation_items = automation_action_menu->items();
 372
 373         automation_items.push_back (SeparatorElem());
 374         automation_items.push_back (MenuElem (_("Controller..."),
 375                         sigc::mem_fun(*this, &MidiTimeAxisView::add_cc_track)));
 376         automation_items.push_back (MenuElem (_("Program Change"),
 377                         sigc::bind(sigc::mem_fun(*this, &MidiTimeAxisView::add_parameter_track),
 378                                 Evoral::Parameter(MidiPgmChangeAutomation))));
 379         automation_items.push_back (MenuElem (_("Bender"),
 380                         sigc::bind(sigc::mem_fun(*this, &MidiTimeAxisView::add_parameter_track),
 381                                 Evoral::Parameter(MidiPitchBenderAutomation))));
 382         automation_items.push_back (MenuElem (_("Pressure"),
 383                         sigc::bind(sigc::mem_fun(*this, &MidiTimeAxisView::add_parameter_track),
 384                                 Evoral::Parameter(MidiChannelPressureAutomation))));
 385 }
 386
 387 Gtk::Menu*
 388 MidiTimeAxisView::build_note_mode_menu()
 389 {
 390         using namespace Menu_Helpers;
 391
 392         Menu* mode_menu = manage (new Menu);
 393         MenuList& items = mode_menu->items();
 394         mode_menu->set_name ("ArdourContextMenu");
 395
 396         RadioMenuItem::Group mode_group;
 397         items.push_back (RadioMenuElem (mode_group, _("Sustained"),
 398                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_note_mode), Sustained)));
 399         _note_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 400         _note_mode_item->set_active(_note_mode == Sustained);
 401
 402         items.push_back (RadioMenuElem (mode_group, _("Percussive"),
 403                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_note_mode), Percussive)));
 404         _percussion_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 405         _percussion_mode_item->set_active(_note_mode == Percussive);
 406
 407         return mode_menu;
 408 }
 409
 410 Gtk::Menu*
 411 MidiTimeAxisView::build_color_mode_menu()
 412 {
 413         using namespace Menu_Helpers;
 414
 415         Menu* mode_menu = manage (new Menu);
 416         MenuList& items = mode_menu->items();
 417         mode_menu->set_name ("ArdourContextMenu");
 418
 419         RadioMenuItem::Group mode_group;
 420         items.push_back (RadioMenuElem (mode_group, _("Meter Colors"),
 421                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_color_mode), MeterColors)));
 422         _meter_color_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 423         _meter_color_mode_item->set_active(_color_mode == MeterColors);
 424
 425         items.push_back (RadioMenuElem (mode_group, _("Channel Colors"),
 426                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_color_mode), ChannelColors)));
 427         _channel_color_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 428         _channel_color_mode_item->set_active(_color_mode == ChannelColors);
 429
 430         items.push_back (RadioMenuElem (mode_group, _("Track Color"),
 431                                 sigc::bind (sigc::mem_fun (*this, &MidiTimeAxisView::set_color_mode), TrackColor)));
 432         _channel_color_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
 433         _channel_color_mode_item->set_active(_color_mode == TrackColor);
 434
 435         return mode_menu;
 436 }
 437
 438 void
 439 MidiTimeAxisView::set_note_mode(NoteMode mode)
 440 {
 441         if (_note_mode != mode || midi_track()->note_mode() != mode) {
 442                 _note_mode = mode;
 443                 midi_track()->set_note_mode(mode);
 444                 xml_node->add_property ("note-mode", enum_2_string(_note_mode));
 445                 _view->redisplay_diskstream();
 446         }
 447 }
 448
 449 void
 450 MidiTimeAxisView::set_color_mode(ColorMode mode)
 451 {
 452         if (_color_mode != mode) {
 453                 if (mode == ChannelColors) {
 454                         _channel_selector.set_channel_colors(CanvasNoteEvent::midi_channel_colors);
 455                 } else {
 456                         _channel_selector.set_default_channel_color();
 457                 }
 458
 459                 _color_mode = mode;
 460                 xml_node->add_property ("color-mode", enum_2_string(_color_mode));
 461                 _view->redisplay_diskstream();
 462         }
 463 }
 464
 465 void
 466 MidiTimeAxisView::set_note_range(MidiStreamView::VisibleNoteRange range)
 467 {
 468         if (!_ignore_signals)
 469                 midi_view()->set_note_range(range);
 470 }
 471
 472
 473 void
 474 MidiTimeAxisView::update_range()
 475 {
 476         MidiGhostRegion* mgr;
 477
 478         for(list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 479                 if ((mgr = dynamic_cast<MidiGhostRegion*>(*i)) != 0) {
 480                         mgr->update_range();
 481                 }
 482         }
 483 }
 484
 485 void
 486 MidiTimeAxisView::show_all_automation ()
 487 {
 488         if (midi_track()) {
 489                 const set<Evoral::Parameter> params = midi_track()->midi_diskstream()->
 490                                 midi_playlist()->contained_automation();
 491
 492                 for (set<Evoral::Parameter>::const_iterator i = params.begin(); i != params.end(); ++i) {
 493                         create_automation_child(*i, true);
 494                 }
 495         }
 496
 497         RouteTimeAxisView::show_all_automation ();
 498 }
 499
 500 void
 501 MidiTimeAxisView::show_existing_automation ()
 502 {
 503         if (midi_track()) {
 504                 const set<Evoral::Parameter> params = midi_track()->midi_diskstream()->
 505                                 midi_playlist()->contained_automation();
 506
 507                 for (set<Evoral::Parameter>::const_iterator i = params.begin(); i != params.end(); ++i) {
 508                         create_automation_child(*i, true);
 509                 }
 510         }
 511
 512         RouteTimeAxisView::show_existing_automation ();
 513 }
 514
 515 /** Prompt for a controller with a dialog and add an automation track for it
 516  */
 517 void
 518 MidiTimeAxisView::add_cc_track()
 519 {
 520         int response;
 521         Evoral::Parameter param(0, 0, 0);
 522
 523         {
 524                 AddMidiCCTrackDialog dialog;
 525                 dialog.set_transient_for (_editor);
 526                 response = dialog.run();
 527
 528                 if (response == Gtk::RESPONSE_ACCEPT)
 529                         param = dialog.parameter();
 530         }
 531
 532         if (param.type() != 0 && response == Gtk::RESPONSE_ACCEPT)
 533                 create_automation_child(param, true);
 534 }
 535
 536
 537 /** Add an automation track for the given parameter (pitch bend, channel pressure).
 538  */
 539 void
 540 MidiTimeAxisView::add_parameter_track(const Evoral::Parameter& param)
 541 {
 542         if ( !EventTypeMap::instance().is_midi_parameter(param) ) {
 543                 error << "MidiTimeAxisView: unknown automation child "
 544                         << ARDOUR::EventTypeMap::instance().to_symbol(param) << endmsg;
 545                 return;
 546         }
 547
 548         // create the parameter lane for each selected channel
 549         uint16_t selected_channels = _channel_selector.get_selected_channels();
 550
 551         for (uint8_t i = 0; i < 16; i++) {
 552                 if (selected_channels & (0x0001 << i)) {
 553                         Evoral::Parameter param_with_channel(param.type(), i, param.id());
 554                         create_automation_child(param_with_channel, true);
 555                 }
 556         }
 557 }
 558
 559 void
 560 MidiTimeAxisView::create_automation_child (const Evoral::Parameter& param, bool show)
 561 {
 562         /* These controllers are region "automation", so we do not create
 563          * an AutomationList/Line for the track */
 564
 565         if (param.type() == NullAutomation) {
 566                 cerr << "WARNING: Attempt to create NullAutomation child, ignoring" << endl;
 567                 return;
 568         }
 569
 570         AutomationTracks::iterator existing = _automation_tracks.find(param);
 571         if (existing != _automation_tracks.end())
 572                 return;
 573
 574         boost::shared_ptr<AutomationControl> c = _route->get_control (param);
 575
 576         assert(c);
 577
 578         boost::shared_ptr<AutomationTimeAxisView> track(new AutomationTimeAxisView (_session,
 579                         _route, boost::shared_ptr<ARDOUR::Automatable>(), c,
 580                         _editor,
 581                         *this,
 582                         true,
 583                         parent_canvas,
 584                         _route->describe_parameter(param)));
 585
 586         add_automation_child(param, track, show);
 587 }
 588
 589
 590 void
 591 MidiTimeAxisView::route_active_changed ()
 592 {
 593         RouteUI::route_active_changed ();
 594
 595         if (is_track()) {
 596                 if (_route->active()) {
 597                         controls_ebox.set_name ("MidiTrackControlsBaseUnselected");
 598                         controls_base_selected_name = "MidiTrackControlsBaseSelected";
 599                         controls_base_unselected_name = "MidiTrackControlsBaseUnselected";
 600                 } else {
 601                         controls_ebox.set_name ("MidiTrackControlsBaseInactiveUnselected");
 602                         controls_base_selected_name = "MidiTrackControlsBaseInactiveSelected";
 603                         controls_base_unselected_name = "MidiTrackControlsBaseInactiveUnselected";
 604                 }
 605         } else {
 606
 607                 throw; // wha?
 608
 609                 if (_route->active()) {
 610                         controls_ebox.set_name ("BusControlsBaseUnselected");
 611                         controls_base_selected_name = "BusControlsBaseSelected";
 612                         controls_base_unselected_name = "BusControlsBaseUnselected";
 613                 } else {
 614                         controls_ebox.set_name ("BusControlsBaseInactiveUnselected");
 615                         controls_base_selected_name = "BusControlsBaseInactiveSelected";
 616                         controls_base_unselected_name = "BusControlsBaseInactiveUnselected";
 617                 }
 618         }
 619 }
 620
 621 void
 622 MidiTimeAxisView::start_step_editing ()
 623 {
 624         step_edit_insert_position = _editor.get_preferred_edit_position ();
 625         step_edit_beat_pos = 0;
 626         step_edit_region = playlist()->top_region_at (step_edit_insert_position);
 627
 628         if (step_edit_region) {
 629                 RegionView* rv = view()->find_view (step_edit_region);
 630                 step_edit_region_view = dynamic_cast<MidiRegionView*> (rv);
 631         } else {
 632                 step_edit_region_view = 0;
 633         }
 634
 635         midi_track()->set_step_editing (true);
 636 }
 637
 638 void
 639 MidiTimeAxisView::stop_step_editing ()
 640 {
 641         midi_track()->set_step_editing (false);
 642 }
 643
 644 void
 645 MidiTimeAxisView::check_step_edit ()
 646 {
 647         MidiRingBuffer<nframes_t>& incoming (midi_track()->step_edit_ring_buffer());
 648         Evoral::Note<Evoral::MusicalTime> note;
 649         uint8_t* buf;
 650         uint32_t bufsize = 32;
 651
 652         buf = new uint8_t[bufsize];
 653
 654         while (incoming.read_space()) {
 655                 nframes_t time;
 656                 Evoral::EventType type;
 657                 uint32_t size;
 658
 659                 incoming.read_prefix (&time, &type, &size);
 660
 661                 if (size > bufsize) {
 662                         delete [] buf;
 663                         bufsize = size;
 664                         buf = new uint8_t[bufsize];
 665                 }
 666
 667                 incoming.read_contents (size, buf);
 668
 669                 if ((buf[0] & 0xf0) == MIDI_CMD_NOTE_ON) {
 670
 671                         if (step_edit_region == 0) {
 672
 673                                 step_edit_region = add_region (step_edit_insert_position);
 674                                 RegionView* rv = view()->find_view (step_edit_region);
 675
 676                                 if (rv) {
 677                                         step_edit_region_view = dynamic_cast<MidiRegionView*>(rv);
 678                                 } else {
 679                                         fatal << X_("programming error: no view found for new MIDI region") << endmsg;
 680                                         /*NOTREACHED*/
 681                                 }
 682                         }
 683
 684                         if (step_edit_region_view) {
 685
 686                                 bool success;
 687                                 Evoral::MusicalTime beats = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
 688
 689                                 if (!success) {
 690                                         continue;
 691                                 }
 692
 693                                 step_edit_region_view->add_note (buf[0] & 0xf, buf[1], buf[2], step_edit_beat_pos, beats);
 694                                 step_edit_beat_pos += beats;
 695                         }
 696                 }
 697
 698         }
 699 }
 700
 701 void
 702 MidiTimeAxisView::step_edit_rest ()
 703 {
 704         bool success;
 705         Evoral::MusicalTime beats = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
 706         step_edit_beat_pos += beats;
 707 }
 708
 709 boost::shared_ptr<Region>
 710 MidiTimeAxisView::add_region (nframes64_t pos)
 711 {
 712         Editor* real_editor = dynamic_cast<Editor*> (&_editor);
 713
 714         real_editor->begin_reversible_command (_("create region"));
 715         XMLNode &before = playlist()->get_state();
 716
 717         nframes64_t start = pos;
 718         real_editor->snap_to (start, -1);
 719         const Meter& m = _session->tempo_map().meter_at(start);
 720         const Tempo& t = _session->tempo_map().tempo_at(start);
 721         double length = floor (m.frames_per_bar(t, _session->frame_rate()));
 722
 723         const boost::shared_ptr<MidiDiskstream> diskstream =
 724                 boost::dynamic_pointer_cast<MidiDiskstream>(view()->trackview().track()->diskstream());
 725
 726         boost::shared_ptr<Source> src = _session->create_midi_source_for_session (*diskstream.get());
 727
 728         boost::shared_ptr<Region> region = (RegionFactory::create (src, 0, (nframes_t) length,
 729                                                                    PBD::basename_nosuffix(src->name())));
 730
 731         playlist()->add_region (region, start);
 732         XMLNode &after = playlist()->get_state();
 733         _session->add_command (new MementoCommand<Playlist> (*playlist().get(), &before, &after));
 734
 735         real_editor->commit_reversible_command();
 736
 737         return region;
 738 }