gtk2_ardour/transport_masters_dialog.cc

   1 /*
   2     Copyright (C) 2018 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 <gtkmm/stock.h>
  20
  21 #include "pbd/enumwriter.h"
  22 #include "pbd/i18n.h"
  23
  24 #include "temporal/time.h"
  25
  26 #include "ardour/audioengine.h"
  27 #include "ardour/session.h"
  28 #include "ardour/transport_master.h"
  29 #include "ardour/transport_master_manager.h"
  30
  31 #include "widgets/tooltips.h"
  32
  33 #include "gtkmm2ext/utils.h"
  34 #include "gtkmm2ext/gui_thread.h"
  35
  36 #include "ardour_ui.h"
  37 #include "floating_text_entry.h"
  38 #include "transport_masters_dialog.h"
  39
  40
  41 using namespace std;
  42 using namespace Gtk;
  43 using namespace Gtkmm2ext;
  44 using namespace ARDOUR;
  45 using namespace PBD;
  46 using namespace ArdourWidgets;
  47
  48 TransportMastersWidget::TransportMastersWidget ()
  49         : table (4, 13)
  50         , add_button (_("Add a new Transport Master"))
  51 {
  52         pack_start (table, PACK_EXPAND_WIDGET, 12);
  53         pack_start (add_button, FALSE, FALSE);
  54
  55         add_button.signal_clicked ().connect (sigc::mem_fun (*this, &TransportMastersWidget::add_master));
  56
  57         col_title[0].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Use")));
  58         col_title[1].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Name")));
  59         col_title[2].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Type")));
  60         col_title[3].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Format/\nBPM")));
  61         col_title[4].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Current")));
  62         col_title[5].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Last")));
  63         col_title[6].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Timestamp")));
  64         col_title[7].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Delta")));
  65         col_title[8].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Collect")));
  66         col_title[9].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Data Source")));
  67         col_title[10].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Active\nCommands")));
  68         col_title[11].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Clock\nSynced")));
  69         col_title[12].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("29.97/\n30")));
  70         col_title[13].set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Remove")));
  71
  72         set_tooltip (col_title[12], _("<b>When enabled</b> the external timecode source is assumed to use 29.97 fps instead of 30000/1001.\n"
  73                                       "SMPTE 12M-1999 specifies 29.97df as 30000/1001. The spec further mentions that "
  74                                       "drop-sample timecode has an accumulated error of -86ms over a 24-hour period.\n"
  75                                       "Drop-sample timecode would compensate exactly for a NTSC color frame rate of 30 * 0.9990 (ie 29.970000). "
  76                                       "That is not the actual rate. However, some vendors use that rate - despite it being against the specs - "
  77                                       "because the variant of using exactly 29.97 fps has zero timecode drift.\n"
  78                              ));
  79
  80         set_tooltip (col_title[11], string_compose (_("<b>When enabled</b> the external timecode source is assumed to be sample-clock synced to the audio interface\n"
  81                                                       "being used by %1."), PROGRAM_NAME));
  82
  83         table.set_spacings (6);
  84
  85         TransportMasterManager::instance().CurrentChanged.connect (current_connection, invalidator (*this), boost::bind (&TransportMastersWidget::current_changed, this, _1, _2), gui_context());
  86         TransportMasterManager::instance().Added.connect (add_connection, invalidator (*this), boost::bind (&TransportMastersWidget::rebuild, this), gui_context());
  87         TransportMasterManager::instance().Removed.connect (remove_connection, invalidator (*this), boost::bind (&TransportMastersWidget::rebuild, this), gui_context());
  88
  89         rebuild ();
  90 }
  91
  92 TransportMastersWidget::~TransportMastersWidget ()
  93 {
  94         for (vector<Row*>::iterator r = rows.begin(); r != rows.end(); ++r) {
  95                 delete *r;
  96         }
  97 }
  98
  99 void
 100 TransportMastersWidget::set_transport_master (boost::shared_ptr<TransportMaster> tm)
 101 {
 102         _session->request_sync_source (tm);
 103 }
 104
 105 void
 106 TransportMastersWidget::current_changed (boost::shared_ptr<TransportMaster> old_master, boost::shared_ptr<TransportMaster> new_master)
 107 {
 108         for (vector<Row*>::iterator r = rows.begin(); r != rows.end(); ++r) {
 109                 if ((*r)->tm == new_master) {
 110                         (*r)->use_button.set_active (true);
 111                         break; /* there can only be one */
 112                 }
 113         }
 114 }
 115
 116 void
 117 TransportMastersWidget::add_master ()
 118 {
 119         AddTransportMasterDialog d;
 120
 121         d.present ();
 122         string name;
 123
 124         while (name.empty()) {
 125
 126                 int r = d.run ();
 127
 128                 switch (r) {
 129                 case RESPONSE_ACCEPT:
 130                         name = d.get_name();
 131                         break;
 132                 default:
 133                         return;
 134                 }
 135         }
 136
 137         d.hide ();
 138
 139         if (TransportMasterManager::instance().add (d.get_type(), name)) {
 140                 MessageDialog msg (_("New transport master not added - check error log for details"));
 141                 msg.run ();
 142         }
 143 }
 144
 145 void
 146 TransportMastersWidget::rebuild ()
 147 {
 148         TransportMasterManager::TransportMasters const & masters (TransportMasterManager::instance().transport_masters());
 149
 150         container_clear (table);
 151
 152         for (vector<Row*>::iterator r = rows.begin(); r != rows.end(); ++r) {
 153                 delete *r;
 154         }
 155
 156         rows.clear ();
 157         table.resize (masters.size()+1, 14);
 158
 159         for (size_t col = 0; col < sizeof (col_title) / sizeof (col_title[0]); ++col) {
 160                 table.attach (col_title[col], col, col+1, 0, 1);
 161         }
 162
 163         uint32_t n = 1;
 164
 165         Gtk::RadioButtonGroup use_button_group;
 166
 167         for (TransportMasterManager::TransportMasters::const_iterator m = masters.begin(); m != masters.end(); ++m, ++n) {
 168
 169                 Row* r = new Row (*this);
 170                 rows.push_back (r);
 171
 172                 r->tm = *m;
 173                 r->label.set_text ((*m)->name());
 174                 r->type.set_text (enum_2_string  ((*m)->type()));
 175
 176                 r->use_button.set_group (use_button_group);
 177
 178                 if (TransportMasterManager::instance().current() == r->tm) {
 179                         r->use_button.set_active (true);
 180                 }
 181
 182                 int col = 0;
 183
 184                 r->label_box.add (r->label);
 185
 186                 table.attach (r->use_button, col, col+1, n, n+1); ++col;
 187                 table.attach (r->label_box, col, col+1, n, n+1); ++col;
 188                 table.attach (r->type, col, col+1, n, n+1); ++col;
 189                 table.attach (r->format, col, col+1, n, n+1); ++col;
 190                 table.attach (r->current, col, col+1, n, n+1); ++col;
 191                 table.attach (r->last, col, col+1, n, n+1); ++col;
 192                 table.attach (r->timestamp, col, col+1, n, n+1); ++col;
 193                 table.attach (r->delta, col, col+1, n, n+1); ++col;
 194                 table.attach (r->collect_button, col, col+1, n, n+1); ++col;
 195                 table.attach (r->port_combo, col, col+1, n, n+1); ++col;
 196                 table.attach (r->request_options, col, col+1, n, n+1); ++col;
 197
 198                 boost::shared_ptr<TimecodeTransportMaster> ttm (boost::dynamic_pointer_cast<TimecodeTransportMaster> (r->tm));
 199
 200                 if (ttm) {
 201                         table.attach (r->sclock_synced_button, col, col+1, n, n+1); ++col;
 202                         table.attach (r->fr2997_button, col, col+1, n, n+1); ++col;
 203                         r->fr2997_button.signal_toggled().connect (sigc::mem_fun (*r, &TransportMastersWidget::Row::fr2997_button_toggled));
 204                 } else {
 205                         col += 2;
 206                 }
 207
 208                 if (r->tm->removeable()) {
 209                         table.attach (r->remove_button, col, col+1, n, n+1); ++col;
 210                 } else {
 211                         col++;
 212                 }
 213
 214                 table.show_all ();
 215
 216                 // r->label_box.set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 217                 r->label_box.signal_button_press_event().connect (sigc::mem_fun (*r, &TransportMastersWidget::Row::name_press));
 218                 r->port_combo.signal_changed().connect (sigc::mem_fun (*r, &TransportMastersWidget::Row::port_choice_changed));
 219                 r->use_button.signal_toggled().connect (sigc::mem_fun (*r, &TransportMastersWidget::Row::use_button_toggled));
 220                 r->collect_button.signal_toggled().connect (sigc::mem_fun (*r, &TransportMastersWidget::Row::collect_button_toggled));
 221                 r->request_options.signal_button_press_event().connect (sigc::mem_fun (*r, &TransportMastersWidget::Row::request_option_press), false);
 222                 r->remove_button.signal_clicked().connect (sigc::mem_fun (*r, &TransportMastersWidget::Row::remove_clicked));
 223
 224                 if (ttm) {
 225                         r->sclock_synced_button.signal_toggled().connect (sigc::mem_fun (*r, &TransportMastersWidget::Row::sync_button_toggled));
 226                 }
 227
 228                 r->tm->PropertyChanged.connect (r->property_change_connection, invalidator (*this), boost::bind (&TransportMastersWidget::Row::prop_change, r, _1), gui_context());
 229
 230                 PropertyChange all_change;
 231                 all_change.add (Properties::locked);
 232                 all_change.add (Properties::collect);
 233                 all_change.add (Properties::connected);
 234
 235                 if (ttm) {
 236                         all_change.add (Properties::fr2997);
 237                         all_change.add (Properties::sclock_synced);
 238                 }
 239
 240                 r->prop_change (all_change);
 241         }
 242 }
 243
 244 TransportMastersWidget::Row::Row (TransportMastersWidget& p)
 245         : parent (p)
 246         , request_option_menu (0)
 247         , remove_button (X_("x"))
 248         , name_editor (0)
 249         , save_when (0)
 250         , ignore_active_change (false)
 251 {
 252 }
 253
 254 bool
 255 TransportMastersWidget::Row::name_press (GdkEventButton* ev)
 256 {
 257         if (ev->type == GDK_2BUTTON_PRESS && ev->button == 1) {
 258                 Gtk::Window* toplevel = dynamic_cast<Gtk::Window*> (label.get_toplevel());
 259                 if (!toplevel) {
 260                         return false;
 261                 }
 262                 name_editor = new FloatingTextEntry (toplevel, tm->name());
 263                 name_editor->use_text.connect (sigc::mem_fun (*this, &TransportMastersWidget::Row::name_edited));
 264                 name_editor->show ();
 265                 return true;
 266         }
 267         return false;
 268 }
 269
 270 gboolean
 271 TransportMastersWidget::Row::_idle_remove (gpointer arg)
 272 {
 273         TransportMastersWidget::Row* row = (TransportMastersWidget::Row*) arg;
 274         TransportMasterManager::instance().remove (row->tm->name());
 275
 276         return FALSE; /* do not call again */
 277 }
 278
 279 void
 280 TransportMastersWidget::Row::remove_clicked ()
 281 {
 282         /* have to do this via an idle callback, because it will destroy the
 283            widget from which this callback was initiated.
 284         */
 285         g_idle_add_full (G_PRIORITY_HIGH_IDLE + 10, _idle_remove, this, NULL);
 286 }
 287
 288 void
 289 TransportMastersWidget::Row::name_edited (string str, int ignored)
 290 {
 291         tm->set_name (str);
 292         /* floating text entry deletes itself */
 293         name_editor = 0;
 294 }
 295
 296 void
 297 TransportMastersWidget::Row::prop_change (PropertyChange what_changed)
 298 {
 299         if (what_changed.contains (Properties::locked)) {
 300         }
 301
 302         if (what_changed.contains (Properties::fr2997)) {
 303                 fr2997_button.set_active (boost::dynamic_pointer_cast<TimecodeTransportMaster> (tm)->fr2997());
 304         }
 305
 306         if (what_changed.contains (Properties::sclock_synced)) {
 307                 sclock_synced_button.set_active (boost::dynamic_pointer_cast<TimecodeTransportMaster> (tm)->sample_clock_synced());
 308         }
 309
 310         if (what_changed.contains (Properties::collect)) {
 311                 collect_button.set_active (tm->collect());
 312         }
 313
 314         if (what_changed.contains (Properties::connected)) {
 315                 populate_port_combo ();
 316         }
 317
 318         if (what_changed.contains (Properties::name)) {
 319                 label.set_text (tm->name());
 320         }
 321 }
 322
 323 void
 324 TransportMastersWidget::Row::use_button_toggled ()
 325 {
 326         if (use_button.get_active()) {
 327                 parent.set_transport_master (tm);
 328         }
 329 }
 330
 331 void
 332 TransportMastersWidget::Row::fr2997_button_toggled ()
 333 {
 334         boost::dynamic_pointer_cast<TimecodeTransportMaster>(tm)->set_fr2997 (fr2997_button.get_active());
 335 }
 336
 337 void
 338 TransportMastersWidget::Row::collect_button_toggled ()
 339 {
 340         tm->set_collect (collect_button.get_active());
 341 }
 342
 343 void
 344 TransportMastersWidget::Row::sync_button_toggled ()
 345 {
 346         tm->set_sample_clock_synced (sclock_synced_button.get_active());
 347 }
 348
 349 bool
 350 TransportMastersWidget::Row::request_option_press (GdkEventButton* ev)
 351 {
 352         if (ev->button == 1) {
 353                 if (!request_option_menu) {
 354                         build_request_options ();
 355                 }
 356                 request_option_menu->popup (1, ev->time);
 357                 return true;
 358         }
 359         return false;
 360 }
 361
 362 void
 363 TransportMastersWidget::Row::build_request_options ()
 364 {
 365         using namespace Gtk::Menu_Helpers;
 366
 367         request_option_menu = manage (new Menu);
 368
 369         MenuList& items (request_option_menu->items());
 370
 371         items.push_back (CheckMenuElem (_("Accept speed-changing commands (start/stop)")));
 372         Gtk::CheckMenuItem* i = dynamic_cast<Gtk::CheckMenuItem *> (&items.back ());
 373         i->set_active (tm->request_mask() & TR_Speed);
 374         items.push_back (CheckMenuElem (_("Accept locate commands")));
 375         i = dynamic_cast<Gtk::CheckMenuItem *> (&items.back ());
 376         i->set_active (tm->request_mask() & TR_Locate);
 377 }
 378
 379 Glib::RefPtr<Gtk::ListStore>
 380 TransportMastersWidget::Row::build_port_list (vector<string> const & ports)
 381 {
 382         Glib::RefPtr<Gtk::ListStore> store = ListStore::create (port_columns);
 383         TreeModel::Row row;
 384
 385         row = *store->append ();
 386         row[port_columns.full_name] = string();
 387         row[port_columns.short_name] = _("Disconnected");
 388
 389         for (vector<string>::const_iterator p = ports.begin(); p != ports.end(); ++p) {
 390
 391                 if (AudioEngine::instance()->port_is_mine (*p)) {
 392                         continue;
 393                 }
 394
 395                 row = *store->append ();
 396                 row[port_columns.full_name] = *p;
 397
 398                 std::string pn = ARDOUR::AudioEngine::instance()->get_pretty_name_by_name (*p);
 399                 if (pn.empty ()) {
 400                         pn = (*p).substr ((*p).find (':') + 1);
 401                 }
 402                 row[port_columns.short_name] = pn;
 403         }
 404
 405         return store;
 406 }
 407
 408 void
 409 TransportMastersWidget::Row::populate_port_combo ()
 410 {
 411         if (!tm->port()) {
 412                 port_combo.hide ();
 413                 return;
 414         } else {
 415                 port_combo.show ();
 416         }
 417
 418         vector<string> inputs;
 419
 420         if (tm->port()->type() == DataType::MIDI) {
 421                 ARDOUR::AudioEngine::instance()->get_ports ("", ARDOUR::DataType::MIDI, ARDOUR::PortFlags (ARDOUR::IsOutput), inputs);
 422         } else {
 423                 ARDOUR::AudioEngine::instance()->get_ports ("", ARDOUR::DataType::AUDIO, ARDOUR::PortFlags (ARDOUR::IsOutput), inputs);
 424         }
 425
 426         Glib::RefPtr<Gtk::ListStore> input = build_port_list (inputs);
 427         bool input_found = false;
 428         int n;
 429
 430         port_combo.set_model (input);
 431
 432         Gtk::TreeModel::Children children = input->children();
 433         Gtk::TreeModel::Children::iterator i;
 434         i = children.begin();
 435         ++i; /* skip "Disconnected" */
 436
 437
 438         for (n = 1;  i != children.end(); ++i, ++n) {
 439                 string port_name = (*i)[port_columns.full_name];
 440                 if (tm->port()->connected_to (port_name)) {
 441                         port_combo.set_active (n);
 442                         input_found = true;
 443                         break;
 444                 }
 445         }
 446
 447         if (!input_found) {
 448                 port_combo.set_active (0); /* disconnected */
 449         }
 450 }
 451
 452 void
 453 TransportMastersWidget::Row::port_choice_changed ()
 454 {
 455         if (ignore_active_change) {
 456                 return;
 457         }
 458
 459         TreeModel::iterator active = port_combo.get_active ();
 460         string new_port = (*active)[port_columns.full_name];
 461
 462         if (new_port.empty()) {
 463                 tm->port()->disconnect_all ();
 464                 return;
 465         }
 466
 467         if (!tm->port()->connected_to (new_port)) {
 468                 tm->port()->disconnect_all ();
 469                 tm->port()->connect (new_port);
 470         }
 471 }
 472
 473 void
 474 TransportMastersWidget::Row::update (Session* s, samplepos_t now)
 475 {
 476         using namespace Timecode;
 477
 478         samplepos_t pos;
 479         double speed;
 480         samplepos_t most_recent;
 481         samplepos_t when;
 482         stringstream ss;
 483         Time t;
 484         Time l;
 485         boost::shared_ptr<TimecodeTransportMaster> ttm;
 486         boost::shared_ptr<MIDIClock_TransportMaster> mtm;
 487
 488         if (s) {
 489
 490                 if (tm->speed_and_position (speed, pos, most_recent, when, now)) {
 491
 492                         sample_to_timecode (pos, t, false, false, 25, false, AudioEngine::instance()->sample_rate(), 100, false, 0);
 493                         sample_to_timecode (most_recent, l, false, false, 25, false, AudioEngine::instance()->sample_rate(), 100, false, 0);
 494
 495                         if ((ttm = boost::dynamic_pointer_cast<TimecodeTransportMaster> (tm))) {
 496                                 format.set_text (timecode_format_name (ttm->apparent_timecode_format()));
 497                                 last.set_text (Timecode::timecode_format_time (l));
 498                         } else if ((mtm = boost::dynamic_pointer_cast<MIDIClock_TransportMaster> (tm))) {
 499                                 char buf[8];
 500                                 snprintf (buf, sizeof (buf), "%.1f", mtm->bpm());
 501                                 format.set_text (buf);
 502                                 last.set_text ("");
 503                         } else {
 504                                 format.set_text ("");
 505                                 last.set_text ("");
 506                         }
 507                         current.set_text (Timecode::timecode_format_time (t));
 508                         delta.set_markup (tm->delta_string ());
 509
 510                         char gap[32];
 511                         const float seconds = (when - now) / (float) AudioEngine::instance()->sample_rate();
 512                         if (abs (seconds) < 1.0) {
 513                                 snprintf (gap, sizeof (gap), "%.3fs", seconds);
 514                         } else if (abs (seconds) < 4.0) {
 515                                 snprintf (gap, sizeof (gap), "%ds", (int) floor (seconds));
 516                         } else {
 517                                 snprintf (gap, sizeof (gap), "%s", _(">4s ago"));
 518                         }
 519                         timestamp.set_text (gap);
 520                         save_when = when;
 521
 522                 } else {
 523
 524                         if (save_when) {
 525                                 char gap[32];
 526
 527                                 const float seconds = (when - now) / (float) AudioEngine::instance()->sample_rate();
 528                                 if (abs (seconds) < 1.0) {
 529                                         snprintf (gap, sizeof (gap), "%.3fs", seconds);
 530                                 } else if (abs (seconds) < 4.0) {
 531                                         snprintf (gap, sizeof (gap), "%ds", (int) floor (seconds));
 532                                 } else {
 533                                         snprintf (gap, sizeof (gap), "%s", _(">4s ago"));
 534                                 }
 535                                 timestamp.set_text (gap);
 536                                 save_when = when;
 537                         }
 538                         delta.set_text ("");
 539                         current.set_text ("");
 540                 }
 541         }
 542 }
 543
 544 void
 545 TransportMastersWidget::update (samplepos_t /* audible */)
 546 {
 547         samplepos_t now = AudioEngine::instance()->sample_time ();
 548
 549         for (vector<Row*>::iterator r = rows.begin(); r != rows.end(); ++r) {
 550                 (*r)->update (_session, now);
 551         }
 552 }
 553
 554 void
 555 TransportMastersWidget::on_map ()
 556 {
 557         update_connection = ARDOUR_UI::Clock.connect (sigc::mem_fun (*this, &TransportMastersWidget::update));
 558         Gtk::VBox::on_map ();
 559 }
 560
 561 void
 562 TransportMastersWidget::on_unmap ()
 563 {
 564         update_connection.disconnect ();
 565         Gtk::VBox::on_unmap ();
 566 }
 567
 568 TransportMastersWindow::TransportMastersWindow ()
 569         : ArdourWindow (_("Transport Masters"))
 570 {
 571         add (w);
 572         w.show ();
 573 }
 574
 575 void
 576 TransportMastersWindow::on_realize ()
 577 {
 578         ArdourWindow::on_realize ();
 579         /* (try to) ensure that resizing is possible and the window can be moved (and closed) */
 580         get_window()->set_decorations (Gdk::DECOR_BORDER | Gdk::DECOR_RESIZEH | Gdk::DECOR_TITLE | Gdk::DECOR_MENU);
 581 }
 582
 583
 584
 585 void
 586 TransportMastersWindow::set_session (ARDOUR::Session* s)
 587 {
 588         ArdourWindow::set_session (s);
 589         w.set_session (s);
 590 }
 591
 592 TransportMastersWidget::AddTransportMasterDialog::AddTransportMasterDialog ()
 593         : ArdourDialog (_("Add Transport Master"), true, false)
 594         , name_label (_("Name"))
 595         , type_label (_("Type"))
 596 {
 597         name_hbox.set_spacing (6);
 598         name_hbox.pack_start (name_label, false, false);
 599         name_hbox.pack_start (name_entry, true, true);
 600
 601         type_hbox.set_spacing (6);
 602         type_hbox.pack_start (type_label, false, false);
 603         type_hbox.pack_start (type_combo, true, true);
 604
 605         vector<string> s;
 606
 607         s.push_back (X_("MTC"));
 608         s.push_back (X_("LTC"));
 609         s.push_back (X_("MIDI Clock"));
 610
 611         set_popdown_strings (type_combo, s);
 612         type_combo.set_active_text (X_("LTC"));
 613
 614         get_vbox()->pack_start (name_hbox, false, false);
 615         get_vbox()->pack_start (type_hbox, false, false);
 616
 617         add_button (_("Cancel"), RESPONSE_CANCEL);
 618         add_button (_("Add"), RESPONSE_ACCEPT);
 619
 620         name_entry.show ();
 621         type_combo.show ();
 622         name_label.show ();
 623         type_label.show ();
 624         name_hbox.show ();
 625         type_hbox.show ();
 626
 627         name_entry.signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &Gtk::Dialog::response), Gtk::RESPONSE_ACCEPT));
 628 }
 629
 630 string
 631 TransportMastersWidget::AddTransportMasterDialog::get_name () const
 632 {
 633         return name_entry.get_text ();
 634 }
 635
 636 SyncSource
 637 TransportMastersWidget::AddTransportMasterDialog::get_type() const
 638 {
 639         string t = type_combo.get_active_text ();
 640
 641         if (t == X_("MTC")) {
 642                 return MTC;
 643         } else if (t == X_("MIDI Clock")) {
 644                 return MIDIClock;
 645         }
 646
 647         return LTC;
 648 }