gtk2_ardour/ardour_ui_options.cc

   1 /*
   2  * Copyright (C) 2005-2019 Paul Davis <paul@linuxaudiosystems.com>
   3  * Copyright (C) 2006-2007 Doug McLain <doug@nostar.net>
   4  * Copyright (C) 2006-2007 Nick Mainsbridge <mainsbridge@gmail.com>
   5  * Copyright (C) 2006 Sampo Savolainen <v2@iki.fi>
   6  * Copyright (C) 2007-2015 Tim Mayberry <mojofunk@gmail.com>
   7  * Copyright (C) 2008-2012 David Robillard <d@drobilla.net>
   8  * Copyright (C) 2008 Hans Baier <hansfbaier@googlemail.com>
   9  * Copyright (C) 2009-2012 Carl Hetherington <carl@carlh.net>
  10  * Copyright (C) 2012-2019 Robin Gareus <robin@gareus.org>
  11  * Copyright (C) 2014-2018 Ben Loftis <ben@harrisonconsoles.com>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License along
  24  * with this program; if not, write to the Free Software Foundation, Inc.,
  25  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  26  */
  27
  28 #ifdef WAF_BUILD
  29 #include "gtk2ardour-config.h"
  30 #endif
  31
  32 #include "pbd/convert.h"
  33 #include "pbd/stacktrace.h"
  34 #include "pbd/unwind.h"
  35
  36 #include "ardour/rc_configuration.h"
  37 #include "ardour/session.h"
  38 #include "ardour/transport_master_manager.h"
  39
  40 #include "gtkmm2ext/utils.h"
  41 #include "waveview/wave_view.h"
  42
  43 #include "audio_clock.h"
  44 #include "ardour_ui.h"
  45 #include "actions.h"
  46 #include "gui_thread.h"
  47 #include "public_editor.h"
  48 #include "main_clock.h"
  49
  50 #include "pbd/i18n.h"
  51
  52 using namespace Gtk;
  53 using namespace Gtkmm2ext;
  54 using namespace ARDOUR;
  55 using namespace PBD;
  56 using namespace ArdourWidgets;
  57
  58 void
  59 ARDOUR_UI::toggle_external_sync()
  60 {
  61         if (_session) {
  62                 if (_session->config.get_video_pullup() != 0.0f && (TransportMasterManager::instance().current()->type() == Engine)) {
  63                         MessageDialog msg (_("It is not possible to use JACK as the the sync source\n when the pull up/down setting is non-zero."));
  64                         msg.run ();
  65                         return;
  66                 }
  67
  68                 ActionManager::toggle_config_state_foo ("Transport", "ToggleExternalSync", sigc::mem_fun (_session->config, &SessionConfiguration::set_external_sync), sigc::mem_fun (_session->config, &SessionConfiguration::get_external_sync));
  69
  70                 /* activating a slave is a session-property.
  71                  * The slave type is a RC property.
  72                  * When the slave is active is must not be reconfigured.
  73                  * This is a UI limitation, imposed by audio-clock and
  74                  * status displays which combine RC-config & session-properties.
  75                  *
  76                  * Notify RCOptionEditor by emitting a signal if the active
  77                  * status changed:
  78                  */
  79                 Config->ParameterChanged("sync-source");
  80         }
  81 }
  82
  83 void
  84 ARDOUR_UI::toggle_time_master ()
  85 {
  86         ActionManager::toggle_config_state_foo ("Transport", "ToggleTimeMaster", sigc::mem_fun (_session->config, &SessionConfiguration::set_jack_time_master), sigc::mem_fun (_session->config, &SessionConfiguration::get_jack_time_master));
  87 }
  88
  89 void
  90 ARDOUR_UI::toggle_send_mtc ()
  91 {
  92         ActionManager::toggle_config_state ("Options", "SendMTC", &RCConfiguration::set_send_mtc, &RCConfiguration::get_send_mtc);
  93 }
  94
  95 void
  96 ARDOUR_UI::toggle_send_mmc ()
  97 {
  98         ActionManager::toggle_config_state ("Options", "SendMMC", &RCConfiguration::set_send_mmc, &RCConfiguration::get_send_mmc);
  99 }
 100
 101 void
 102 ARDOUR_UI::toggle_send_midi_clock ()
 103 {
 104         ActionManager::toggle_config_state ("Options", "SendMidiClock", &RCConfiguration::set_send_midi_clock, &RCConfiguration::get_send_midi_clock);
 105 }
 106
 107 void
 108 ARDOUR_UI::toggle_use_mmc ()
 109 {
 110         ActionManager::toggle_config_state ("Options", "UseMMC", &RCConfiguration::set_mmc_control, &RCConfiguration::get_mmc_control);
 111 }
 112
 113 void
 114 ARDOUR_UI::toggle_auto_input ()
 115 {
 116         ActionManager::toggle_config_state_foo ("Transport", "ToggleAutoInput", sigc::mem_fun (_session->config, &SessionConfiguration::set_auto_input), sigc::mem_fun (_session->config, &SessionConfiguration::get_auto_input));
 117 }
 118
 119 void
 120 ARDOUR_UI::toggle_auto_play ()
 121 {
 122         ActionManager::toggle_config_state_foo ("Transport", "ToggleAutoPlay", sigc::mem_fun (_session->config, &SessionConfiguration::set_auto_play), sigc::mem_fun (_session->config, &SessionConfiguration::get_auto_play));
 123 }
 124
 125 void
 126 ARDOUR_UI::toggle_auto_return ()
 127 {
 128         ActionManager::toggle_config_state_foo ("Transport", "ToggleAutoReturn", sigc::mem_fun (_session->config, &SessionConfiguration::set_auto_return), sigc::mem_fun (_session->config, &SessionConfiguration::get_auto_return));
 129 }
 130
 131 void
 132 ARDOUR_UI::toggle_click ()
 133 {
 134         ActionManager::toggle_config_state ("Transport", "ToggleClick", &RCConfiguration::set_clicking, &RCConfiguration::get_clicking);
 135 }
 136
 137 void
 138 ARDOUR_UI::toggle_session_monitoring_in ()
 139 {
 140         Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action (X_("Transport"), X_("SessionMonitorIn"));
 141
 142         if (tact->get_active() && _session->config.get_session_monitoring () == MonitorInput) {
 143                 return;
 144         }
 145         if (!tact->get_active() && _session->config.get_session_monitoring () != MonitorInput) {
 146                 return;
 147         }
 148
 149         if (tact->get_active()) {
 150                 _session->config.set_session_monitoring (MonitorInput);
 151         } else {
 152                 _session->config.set_session_monitoring (MonitorAuto);
 153         }
 154 }
 155
 156 void
 157 ARDOUR_UI::toggle_session_monitoring_disk ()
 158 {
 159         Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action (X_("Transport"), X_("SessionMonitorDisk"));
 160         if (tact->get_active() && _session->config.get_session_monitoring () == MonitorDisk) {
 161                 return;
 162         }
 163         if (!tact->get_active() && _session->config.get_session_monitoring () != MonitorDisk) {
 164                 return;
 165         }
 166
 167         if (tact->get_active()) {
 168                 _session->config.set_session_monitoring (MonitorDisk);
 169         } else {
 170                 _session->config.set_session_monitoring (MonitorAuto);
 171         }
 172 }
 173
 174 void
 175 ARDOUR_UI::unset_dual_punch ()
 176 {
 177         Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action ("Transport", "TogglePunch");
 178         if (tact) {
 179                 ignore_dual_punch = true;
 180                 tact->set_active (false);
 181                 ignore_dual_punch = false;
 182         }
 183 }
 184
 185 void
 186 ARDOUR_UI::toggle_punch ()
 187 {
 188         if (ignore_dual_punch) {
 189                 return;
 190         }
 191
 192         Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action ("Transport", "TogglePunch");
 193
 194         /* drive the other two actions from this one */
 195         Glib::RefPtr<ToggleAction> in_action = ActionManager::get_toggle_action ("Transport", "TogglePunchIn");
 196         Glib::RefPtr<ToggleAction> out_action = ActionManager::get_toggle_action ("Transport", "TogglePunchOut");
 197
 198         in_action->set_active (tact->get_active());
 199         out_action->set_active (tact->get_active());
 200 }
 201
 202 void
 203 ARDOUR_UI::toggle_punch_in ()
 204 {
 205         Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action (X_("Transport"), X_("TogglePunchIn"));
 206
 207         if (tact->get_active() != _session->config.get_punch_in()) {
 208                 _session->config.set_punch_in (tact->get_active ());
 209         }
 210
 211         if (tact->get_active()) {
 212                 /* if punch-in is turned on, make sure the loop/punch ruler is visible, and stop it being hidden,
 213                    to avoid confusing the user */
 214                 show_loop_punch_ruler_and_disallow_hide ();
 215         }
 216
 217         reenable_hide_loop_punch_ruler_if_appropriate ();
 218 }
 219
 220 void
 221 ARDOUR_UI::toggle_punch_out ()
 222 {
 223         Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action (X_("Transport"), X_("TogglePunchOut"));
 224
 225         if (tact->get_active() != _session->config.get_punch_out()) {
 226                 _session->config.set_punch_out (tact->get_active ());
 227         }
 228
 229         if (tact->get_active()) {
 230                 /* if punch-out is turned on, make sure the loop/punch ruler is visible, and stop it being hidden,
 231                    to avoid confusing the user */
 232                 show_loop_punch_ruler_and_disallow_hide ();
 233         }
 234
 235         reenable_hide_loop_punch_ruler_if_appropriate ();
 236 }
 237
 238 void
 239 ARDOUR_UI::show_loop_punch_ruler_and_disallow_hide ()
 240 {
 241         Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action (X_("Rulers"), "toggle-loop-punch-ruler");
 242
 243         tact->set_sensitive (false);
 244
 245         if (!tact->get_active()) {
 246                 tact->set_active ();
 247         }
 248 }
 249
 250 /* This is a bit of a silly name for a method */
 251 void
 252 ARDOUR_UI::reenable_hide_loop_punch_ruler_if_appropriate ()
 253 {
 254         if (!_session->config.get_punch_in() && !_session->config.get_punch_out()) {
 255                 /* if punch in/out are now both off, reallow hiding of the loop/punch ruler */
 256                 Glib::RefPtr<Action> act = ActionManager::get_action (X_("Rulers"), "toggle-loop-punch-ruler");
 257                 if (act) {
 258                         act->set_sensitive (true);
 259                 }
 260         }
 261 }
 262
 263 void
 264 ARDOUR_UI::toggle_video_sync()
 265 {
 266         Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action ("Transport", "ToggleVideoSync");
 267         _session->config.set_use_video_sync (tact->get_active());
 268 }
 269
 270 void
 271 ARDOUR_UI::toggle_editing_space()
 272 {
 273         Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action ("Common", "ToggleMaximalEditor");
 274         if (tact->get_active()) {
 275                 maximise_editing_space ();
 276         } else {
 277                 restore_editing_space ();
 278         }
 279 }
 280
 281 void
 282 ARDOUR_UI::setup_session_options ()
 283 {
 284         _session->config.ParameterChanged.connect (_session_connections, MISSING_INVALIDATOR, boost::bind (&ARDOUR_UI::parameter_changed, this, _1), gui_context());
 285         boost::function<void (std::string)> pc (boost::bind (&ARDOUR_UI::parameter_changed, this, _1));
 286         _session->config.map_parameters (pc);
 287 }
 288
 289 void
 290 ARDOUR_UI::parameter_changed (std::string p)
 291 {
 292         if (p == "external-sync") {
 293
 294                 /* session parameter */
 295
 296                 ActionManager::map_some_state ("Transport", "ToggleExternalSync", sigc::mem_fun (_session->config, &SessionConfiguration::get_external_sync));
 297
 298                 if (!_session->config.get_external_sync()) {
 299                         sync_button.set_text (S_("SyncSource|Int."));
 300                         ActionManager::get_action ("Transport", "ToggleAutoPlay")->set_sensitive (true);
 301                         ActionManager::get_action ("Transport", "ToggleAutoReturn")->set_sensitive (true);
 302                         ActionManager::get_action ("Transport", "ToggleFollowEdits")->set_sensitive (true);
 303                 } else {
 304                         /* XXX we need to make sure that auto-play is off as well as insensitive */
 305                         ActionManager::get_action ("Transport", "ToggleAutoPlay")->set_sensitive (false);
 306                         ActionManager::get_action ("Transport", "ToggleFollowEdits")->set_sensitive (false);
 307                         if (!_session->synced_to_engine()) {
 308                                 /* JACK transport allows auto-return */
 309                                 ActionManager::get_action ("Transport", "ToggleAutoReturn")->set_sensitive (false);
 310                         }
 311                 }
 312
 313         } else if (p == "sync-source") {
 314
 315                 /* app parameter (RC config) */
 316
 317                 if (_session) {
 318                         if (!_session->config.get_external_sync()) {
 319                                 sync_button.set_text (S_("SyncSource|Int."));
 320                         } else {
 321                                 sync_button.set_text (TransportMasterManager::instance().current()->display_name());
 322                         }
 323                 } else {
 324                         /* changing sync source without a session is unlikely/impossible , except during startup */
 325                         sync_button.set_text (TransportMasterManager::instance().current()->display_name());
 326                 }
 327
 328         } else if (p == "follow-edits") {
 329
 330                 ActionManager::map_some_state ("Transport", "ToggleFollowEdits", &UIConfiguration::get_follow_edits);
 331
 332         } else if (p == "send-mtc") {
 333
 334                 ActionManager::map_some_state ("Options", "SendMTC", &RCConfiguration::get_send_mtc);
 335
 336         } else if (p == "send-mmc") {
 337
 338                 ActionManager::map_some_state ("Options", "SendMMC", &RCConfiguration::get_send_mmc);
 339
 340         } else if (p == "mmc-control") {
 341                 ActionManager::map_some_state ("Options", "UseMMC", &RCConfiguration::get_mmc_control);
 342         } else if (p == "auto-play") {
 343                 ActionManager::map_some_state ("Transport", "ToggleAutoPlay", sigc::mem_fun (_session->config, &SessionConfiguration::get_auto_play));
 344         } else if (p == "auto-return") {
 345                 ActionManager::map_some_state ("Transport", "ToggleAutoReturn", sigc::mem_fun (_session->config, &SessionConfiguration::get_auto_return));
 346         } else if (p == "auto-input") {
 347                 ActionManager::map_some_state ("Transport", "ToggleAutoInput", sigc::mem_fun (_session->config, &SessionConfiguration::get_auto_input));
 348         } else if (p == "session-monitoring") {
 349                 Glib::RefPtr<ToggleAction> tiact = ActionManager::get_toggle_action (X_("Transport"), X_("SessionMonitorIn"));
 350                 Glib::RefPtr<ToggleAction> tdact = ActionManager::get_toggle_action (X_("Transport"), X_("SessionMonitorDisk"));
 351                 switch (_session->config.get_session_monitoring ()) {
 352                         case MonitorDisk:
 353                                 tdact->set_active (true);
 354                                 tiact->set_active (false);
 355                                 break;
 356                         case MonitorInput:
 357                                 tiact->set_active (true);
 358                                 tdact->set_active (false);
 359                                 break;
 360                         default:
 361                                 tdact->set_active (false);
 362                                 tiact->set_active (false);
 363                                 break;
 364                 }
 365         } else if (p == "punch-out") {
 366                 ActionManager::map_some_state ("Transport", "TogglePunchOut", sigc::mem_fun (_session->config, &SessionConfiguration::get_punch_out));
 367                 if (!_session->config.get_punch_out()) {
 368                         unset_dual_punch ();
 369                 }
 370         } else if (p == "punch-in") {
 371                 ActionManager::map_some_state ("Transport", "TogglePunchIn", sigc::mem_fun (_session->config, &SessionConfiguration::get_punch_in));
 372                 if (!_session->config.get_punch_in()) {
 373                         unset_dual_punch ();
 374                 }
 375         } else if (p == "clicking") {
 376                 ActionManager::map_some_state ("Transport", "ToggleClick", &RCConfiguration::get_clicking);
 377         } else if (p == "use-video-sync") {
 378                 ActionManager::map_some_state ("Transport",  "ToggleVideoSync", sigc::mem_fun (_session->config, &SessionConfiguration::get_use_video_sync));
 379         } else if (p == "sync-source") {
 380
 381                 synchronize_sync_source_and_video_pullup ();
 382                 set_fps_timeout_connection ();
 383
 384         } else if (p == "show-track-meters") {
 385                 if (editor) editor->toggle_meter_updating();
 386         } else if (p == "primary-clock-delta-mode") {
 387                 if (UIConfiguration::instance().get_primary_clock_delta_mode() != NoDelta) {
 388                         primary_clock->set_is_duration (true);
 389                         primary_clock->set_editable (false);
 390                         primary_clock->set_widget_name ("transport delta");
 391                 } else {
 392                         primary_clock->set_is_duration (false);
 393                         primary_clock->set_editable (true);
 394                         primary_clock->set_widget_name ("transport");
 395                 }
 396         } else if (p == "secondary-clock-delta-mode") {
 397                 if (UIConfiguration::instance().get_secondary_clock_delta_mode() != NoDelta) {
 398                         secondary_clock->set_is_duration (true);
 399                         secondary_clock->set_editable (false);
 400                         secondary_clock->set_widget_name ("secondary delta");
 401                 } else {
 402                         secondary_clock->set_is_duration (false);
 403                         secondary_clock->set_editable (true);
 404                         secondary_clock->set_widget_name ("secondary");
 405                 }
 406         } else if (p == "super-rapid-clock-update") {
 407                 if (_session) {
 408                         stop_clocking ();
 409                         start_clocking ();
 410                 }
 411         } else if (p == "use-tooltips") {
 412                 /* this doesn't really belong here but it has to go somewhere */
 413                 if (UIConfiguration::instance().get_use_tooltips()) {
 414                         Gtkmm2ext::enable_tooltips ();
 415                 } else {
 416                         Gtkmm2ext::disable_tooltips ();
 417                 }
 418         } else if (p == "waveform-gradient-depth") {
 419                 ArdourWaveView::WaveView::set_global_gradient_depth (UIConfiguration::instance().get_waveform_gradient_depth());
 420         } else if (p == "show-mini-timeline") {
 421                 repack_transport_hbox ();
 422         } else if (p == "show-dsp-load-info") {
 423                 repack_transport_hbox ();
 424         } else if (p == "show-disk-space-info") {
 425                 repack_transport_hbox ();
 426         } else if (p == "show-toolbar-recpunch") {
 427                 repack_transport_hbox ();
 428         } else if (p == "show-toolbar-monitoring") {
 429                 repack_transport_hbox ();
 430         } else if (p == "show-toolbar-selclock") {
 431                 repack_transport_hbox ();
 432         } else if (p == "show-editor-meter") {
 433                 repack_transport_hbox ();
 434         } else if (p == "show-secondary-clock") {
 435                 update_clock_visibility ();
 436         } else if (p == "waveform-scale") {
 437                 ArdourWaveView::WaveView::set_global_logscaled (UIConfiguration::instance().get_waveform_scale() == Logarithmic);
 438         } else if (p == "widget-prelight") {
 439                 CairoWidget::set_widget_prelight (UIConfiguration::instance().get_widget_prelight());
 440         } else if (p == "waveform-shape") {
 441                 ArdourWaveView::WaveView::set_global_shape (UIConfiguration::instance().get_waveform_shape() == Rectified
 442                                 ? ArdourWaveView::WaveView::Rectified : ArdourWaveView::WaveView::Normal);
 443         } else if (p == "show-waveform-clipping") {
 444                 ArdourWaveView::WaveView::set_global_show_waveform_clipping (UIConfiguration::instance().get_show_waveform_clipping());
 445         } else if (p == "waveform-cache-size") {
 446                 /* GUI option has units of megabytes; image cache uses units of bytes */
 447                 ArdourWaveView::WaveView::set_image_cache_size (UIConfiguration::instance().get_waveform_cache_size() * 1048576);
 448         } else if (p == "use-wm-visibility") {
 449                 VisibilityTracker::set_use_window_manager_visibility (UIConfiguration::instance().get_use_wm_visibility());
 450         } else if (p == "action-table-columns") {
 451                 const uint32_t cols = UIConfiguration::instance().get_action_table_columns ();
 452                 for (int i = 0; i < MAX_LUA_ACTION_BUTTONS; ++i) {
 453                         const int col = i / 2;
 454                         if (cols & (1<<col)) {
 455                                 action_script_call_btn[i].show();
 456                         } else {
 457                                 action_script_call_btn[i].hide();
 458                         }
 459                 }
 460         } else if (p == "layered-record-mode") {
 461                 layered_button.set_active (_session->config.get_layered_record_mode ());
 462         } else if (p == "flat-buttons") {
 463                 bool flat = UIConfiguration::instance().get_flat_buttons();
 464                 if (ArdourButton::flat_buttons () != flat) {
 465                         ArdourButton::set_flat_buttons (flat);
 466                         /* force a redraw */
 467                         gtk_rc_reset_styles (gtk_settings_get_default());
 468                 }
 469         } else if (p == "boxy-buttons") {
 470                 bool boxy = UIConfiguration::instance().get_boxy_buttons();
 471                 if (ArdourButton::boxy_buttons () != boxy) {
 472                         ArdourButton::set_boxy_buttons (boxy);
 473                         /* force a redraw */
 474                         gtk_rc_reset_styles (gtk_settings_get_default());
 475                 }
 476         } else if ( (p == "snap-to-region-sync") || (p == "snap-to-region-start") || (p == "snap-to-region-end") ) {
 477                 if (editor) editor->mark_region_boundary_cache_dirty();
 478         } else if (p == "screen-saver-mode") {
 479                 switch (UIConfiguration::instance().get_screen_saver_mode ()) {
 480                         using namespace ARDOUR_UI_UTILS;
 481                         case InhibitWhileRecording:
 482                                 inhibit_screensaver (_session && _session->actively_recording ());
 483                                 break;
 484                         case InhibitAlways:
 485                                 inhibit_screensaver (true);
 486                                 break;
 487                         case InhibitNever:
 488                                 inhibit_screensaver (false);
 489                                 break;
 490                 }
 491         }
 492 }
 493
 494 void
 495 ARDOUR_UI::session_parameter_changed (std::string p)
 496 {
 497         if (p == "native-file-data-format" || p == "native-file-header-format") {
 498                 update_format ();
 499         } else if (p == "timecode-format") {
 500                 set_fps_timeout_connection ();
 501         } else if (p == "video-pullup" || p == "timecode-format") {
 502                 set_fps_timeout_connection ();
 503
 504                 synchronize_sync_source_and_video_pullup ();
 505                 reset_main_clocks ();
 506                 editor->queue_visual_videotimeline_update();
 507         } else if (p == "track-name-number") {
 508                 /* DisplaySuspender triggers _route->redisplay() when going out of scope
 509                  * which eventually calls reset_controls_layout_width() and re-sets the
 510                  * track-header width.
 511                  * see also RouteTimeAxisView::update_track_number_visibility()
 512                  */
 513                 DisplaySuspender ds;
 514         }
 515 }
 516
 517 void
 518 ARDOUR_UI::reset_main_clocks ()
 519 {
 520         ENSURE_GUI_THREAD (*this, &ARDOUR_UI::reset_main_clocks)
 521
 522         if (_session) {
 523                 primary_clock->set (_session->audible_sample(), true);
 524                 secondary_clock->set (_session->audible_sample(), true);
 525         } else {
 526                 primary_clock->set (0, true);
 527                 secondary_clock->set (0, true);
 528         }
 529 }
 530
 531 void
 532 ARDOUR_UI::synchronize_sync_source_and_video_pullup ()
 533 {
 534         Glib::RefPtr<Action> act = ActionManager::get_action (X_("Transport"), X_("ToggleExternalSync"));
 535
 536         if (!act) {
 537                 return;
 538         }
 539
 540         if (!_session) {
 541                 goto just_label;
 542         }
 543
 544         if (_session->config.get_video_pullup() == 0.0f) {
 545                 /* with no video pull up/down, any sync source is OK */
 546                 act->set_sensitive (true);
 547         } else {
 548                 /* can't sync to JACK if video pullup != 0.0 */
 549                 if (TransportMasterManager::instance().current()->type() == Engine) {
 550                         act->set_sensitive (false);
 551                 } else {
 552                         act->set_sensitive (true);
 553                 }
 554         }
 555
 556         /* XXX should really be able to set the video pull up
 557            action to insensitive/sensitive, but there is no action.
 558            FIXME
 559         */
 560
 561   just_label:
 562         if (act->get_sensitive ()) {
 563                 set_tip (sync_button, _("Enable/Disable external positional sync"));
 564         } else {
 565                 set_tip (sync_button, _("Sync to JACK is not possible: video pull up/down is set"));
 566         }
 567
 568 }