7548f94c5b7ee6c9e3ba66099500d858490eae61
[ardour.git] / gtk2_ardour / ardour_ui.cc
1 /*
2     Copyright (C) 1999-2002 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     $Id$
19 */
20
21 #include <algorithm>
22 #include <cmath>
23 #include <fcntl.h>
24 #include <signal.h>
25 #include <unistd.h>
26 #include <cerrno>
27 #include <fstream>
28
29 #include <iostream>
30
31 #include <gtkmm/messagedialog.h>
32 #include <gtkmm/accelmap.h>
33
34 #include <pbd/error.h>
35 #include <pbd/compose.h>
36 #include <pbd/pathscanner.h>
37 #include <pbd/failed_constructor.h>
38 #include <gtkmm2ext/gtk_ui.h>
39 #include <gtkmm2ext/utils.h>
40 #include <gtkmm2ext/click_box.h>
41 #include <gtkmm2ext/fastmeter.h>
42 #include <gtkmm2ext/stop_signal.h>
43 #include <gtkmm2ext/popup.h>
44
45 #include <midi++/port.h>
46 #include <midi++/mmc.h>
47
48 #include <ardour/ardour.h>
49 #include <ardour/session_route.h>
50 #include <ardour/port.h>
51 #include <ardour/audioengine.h>
52 #include <ardour/playlist.h>
53 #include <ardour/utils.h>
54 #include <ardour/audio_diskstream.h>
55 #include <ardour/audiofilesource.h>
56 #include <ardour/recent_sessions.h>
57 #include <ardour/port.h>
58 #include <ardour/audio_track.h>
59
60 #include "actions.h"
61 #include "ardour_ui.h"
62 #include "public_editor.h"
63 #include "audio_clock.h"
64 #include "keyboard.h"
65 #include "mixer_ui.h"
66 #include "prompter.h"
67 #include "opts.h"
68 #include "keyboard_target.h"
69 #include "add_route_dialog.h"
70 #include "new_session_dialog.h"
71 #include "about.h"
72 #include "utils.h"
73 #include "gui_thread.h"
74 #include "color_manager.h"
75
76 #include "i18n.h"
77
78 using namespace ARDOUR;
79 using namespace PBD;
80 using namespace Gtkmm2ext;
81 using namespace Gtk;
82 using namespace sigc;
83
84 ARDOUR_UI *ARDOUR_UI::theArdourUI = 0;
85
86 sigc::signal<void,bool> ARDOUR_UI::Blink;
87 sigc::signal<void>      ARDOUR_UI::RapidScreenUpdate;
88 sigc::signal<void>      ARDOUR_UI::SuperRapidScreenUpdate;
89 sigc::signal<void,nframes_t> ARDOUR_UI::Clock;
90
91 ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], string rcfile)
92
93         : Gtkmm2ext::UI ("ardour", argcp, argvp, rcfile),
94           
95           primary_clock (X_("TransportClockDisplay"), true, false, true),
96           secondary_clock (X_("SecondaryClockDisplay"), true, false, true),
97           preroll_clock (X_("PreRollClock"), true, true),
98           postroll_clock (X_("PostRollClock"), true, true),
99
100           /* adjuster table */
101
102           adjuster_table (3, 3),
103
104           /* preroll stuff */
105
106           preroll_button (_("pre\nroll")),
107           postroll_button (_("post\nroll")),
108
109           /* big clock */
110
111           big_clock ("BigClockDisplay", true),
112
113           /* transport */
114
115           time_master_button (_("time\nmaster")),
116
117           shuttle_units_button (_("% ")),
118
119           punch_in_button (_("Punch In")),
120           punch_out_button (_("Punch Out")),
121           auto_return_button (_("Auto Return")),
122           auto_play_button (_("Autuo Play")),
123           auto_input_button (_("Auto Input")),
124           click_button (_("Click")),
125           auditioning_alert_button (_("AUDITION")),
126           solo_alert_button (_("SOLO")),
127           shown_flag (false)
128 {
129         using namespace Gtk::Menu_Helpers;
130
131         Gtkmm2ext::init();
132         
133         about = 0;
134
135         if (theArdourUI == 0) {
136                 theArdourUI = this;
137         }
138
139         /* load colors */
140
141         color_manager = new ColorManager();
142
143         std::string color_file = ARDOUR::find_config_file("ardour.colors");
144         
145         color_manager->load (color_file);
146
147         editor = 0;
148         mixer = 0;
149         session = 0;
150         _session_is_new = false;
151         big_clock_window = 0;
152         session_selector_window = 0;
153         last_key_press_time = 0;
154         connection_editor = 0;
155         add_route_dialog = 0;
156         route_params = 0;
157         option_editor = 0;
158         location_ui = 0;
159         sfdb = 0;
160         open_session_selector = 0;
161         have_configure_timeout = false;
162         have_disk_overrun_displayed = false;
163         have_disk_underrun_displayed = false;
164         _will_create_new_session_automatically = false;
165         session_loaded = false;
166         last_speed_displayed = -1.0f;
167
168         last_configure_time.tv_sec = 0;
169         last_configure_time.tv_usec = 0;
170
171         shuttle_grabbed = false;
172         shuttle_fract = 0.0;
173         shuttle_max_speed = 8.0f;
174
175         shuttle_style_menu = 0;
176         shuttle_unit_menu = 0;
177
178         gettimeofday (&last_peak_grab, 0);
179         gettimeofday (&last_shuttle_request, 0);
180
181         ARDOUR::Diskstream::DiskOverrun.connect (mem_fun(*this, &ARDOUR_UI::disk_overrun_handler));
182         ARDOUR::Diskstream::DiskUnderrun.connect (mem_fun(*this, &ARDOUR_UI::disk_underrun_handler));
183
184         /* handle pending state with a dialog */
185
186         ARDOUR::Session::AskAboutPendingState.connect (mem_fun(*this, &ARDOUR_UI::pending_state_dialog));
187
188         /* have to wait for AudioEngine and Configuration before proceeding */
189 }
190
191 void
192 ARDOUR_UI::set_engine (AudioEngine& e)
193 {
194         engine = &e;
195
196         engine->Stopped.connect (mem_fun(*this, &ARDOUR_UI::engine_stopped));
197         engine->Running.connect (mem_fun(*this, &ARDOUR_UI::engine_running));
198         engine->Halted.connect (mem_fun(*this, &ARDOUR_UI::engine_halted));
199         engine->SampleRateChanged.connect (mem_fun(*this, &ARDOUR_UI::update_sample_rate));
200
201         ActionManager::init ();
202         new_session_dialog = new NewSessionDialog();
203
204         _tooltips.enable();
205
206         keyboard = new Keyboard;
207
208         if (setup_windows ()) {
209                 throw failed_constructor ();
210         }
211
212         if (GTK_ARDOUR::show_key_actions) {
213                 vector<string> names;
214                 vector<string> paths;
215                 vector<string> keys;
216                 vector<AccelKey> bindings;
217
218                 ActionManager::get_all_actions (names, paths, keys, bindings);
219
220                 vector<string>::iterator n;
221                 vector<string>::iterator k;
222                 for (n = names.begin(), k = keys.begin(); n != names.end(); ++n, ++k) {
223                         cerr << "Action: " << (*n) << " bound to " << (*k) << endl;
224                 }
225
226                 exit (0);
227         }
228
229         /* start with timecode, metering enabled
230         */
231         
232         blink_timeout_tag = -1;
233
234         /* the global configuration object is now valid */
235
236         use_config ();
237
238         /* this being a GUI and all, we want peakfiles */
239
240         AudioFileSource::set_build_peakfiles (true);
241         AudioFileSource::set_build_missing_peakfiles (true);
242
243         if (AudioSource::start_peak_thread ()) {
244                 throw failed_constructor();
245         }
246
247         /* start the time-of-day-clock */
248         
249         update_wall_clock ();
250         Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::update_wall_clock), 60000);
251
252         update_disk_space ();
253         update_cpu_load ();
254         update_sample_rate (engine->frame_rate());
255
256         starting.connect (mem_fun(*this, &ARDOUR_UI::startup));
257         stopping.connect (mem_fun(*this, &ARDOUR_UI::shutdown));
258 }
259
260 ARDOUR_UI::~ARDOUR_UI ()
261 {
262         save_ardour_state ();
263
264         if (keyboard) {
265                 delete keyboard;
266         }
267
268         if (editor) {
269                 delete editor;
270         }
271
272         if (mixer) {
273                 delete mixer;
274         }
275
276         if (add_route_dialog) {
277                 delete add_route_dialog;
278         }
279
280         AudioSource::stop_peak_thread ();
281 }
282
283 gint
284 ARDOUR_UI::configure_timeout ()
285 {
286         struct timeval now;
287         struct timeval diff;
288
289         if (last_configure_time.tv_sec == 0 && last_configure_time.tv_usec == 0) {
290                 /* no configure events yet */
291                 return TRUE;
292         }
293
294         gettimeofday (&now, 0);
295         timersub (&now, &last_configure_time, &diff);
296
297         /* force a gap of 0.5 seconds since the last configure event
298          */
299
300         if (diff.tv_sec == 0 && diff.tv_usec < 500000) {
301                 return TRUE;
302         } else {
303                 have_configure_timeout = false;
304                 save_ardour_state ();
305                 return FALSE;
306         }
307 }
308
309 gboolean
310 ARDOUR_UI::configure_handler (GdkEventConfigure* conf)
311 {
312         if (have_configure_timeout) {
313                 gettimeofday (&last_configure_time, 0);
314         } else {
315                 Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::configure_timeout), 100);
316                 have_configure_timeout = true;
317         }
318                 
319         return FALSE;
320 }
321
322 void
323 ARDOUR_UI::save_ardour_state ()
324 {
325         if (!keyboard || !mixer || !editor) {
326                 return;
327         }
328         
329         /* XXX this is all a bit dubious. add_extra_xml() uses
330            a different lifetime model from add_instant_xml().
331         */
332
333         XMLNode* node = new XMLNode (keyboard->get_state());
334         Config->add_extra_xml (*node);
335         Config->save_state();
336
337         XMLNode enode(static_cast<Stateful*>(editor)->get_state());
338         XMLNode mnode(mixer->get_state());
339
340         if (session) {
341                 session->add_instant_xml (enode, session->path());
342                 session->add_instant_xml (mnode, session->path());
343         } else {
344                 Config->add_instant_xml (enode, get_user_ardour_path());
345                 Config->add_instant_xml (mnode, get_user_ardour_path());
346         }
347
348         /* keybindings */
349
350         AccelMap::save ("ardour.saved_bindings");
351 }
352
353 void
354 ARDOUR_UI::startup ()
355 {
356         /* Once the UI is up and running, start the audio engine. Doing
357            this before the UI is up and running can cause problems
358            when not running with SCHED_FIFO, because the amount of
359            CPU and disk work needed to get the UI started can interfere
360            with the scheduling of the audio thread.
361         */
362
363         Glib::signal_idle().connect (mem_fun(*this, &ARDOUR_UI::start_engine));
364 }
365
366 void
367 ARDOUR_UI::finish()
368 {
369         if (session && session->dirty()) {
370                 switch (ask_about_saving_session(_("quit"))) {
371                 case -1:
372                         return;
373                         break;
374                 case 1:
375                         /* use the default name */
376                         if (save_state_canfail ("")) {
377                                 /* failed - don't quit */
378                                 MessageDialog msg (*editor, 
379                                                _("\
380 Ardour was unable to save your session.\n\n\
381 If you still wish to quit, please use the\n\n\
382 \"Just quit\" option."));
383                                 msg.run ();
384                                 return;
385                         }
386                         break;
387                 case 0:
388                         break;
389                 }
390         }
391         Config->save_state();
392         quit ();
393 }
394
395 int
396 ARDOUR_UI::ask_about_saving_session (const string & what)
397 {
398         ArdourDialog window (_("ardour: save session?"));
399         Gtk::HBox dhbox;  // the hbox for the image and text
400         Gtk::Label  prompt_label;
401         Gtk::Image* dimage = manage (new Gtk::Image(Stock::DIALOG_WARNING,  Gtk::ICON_SIZE_DIALOG));
402
403         string msg;
404
405         msg = string_compose(_("Don't %1"), what);
406         window.add_button (msg, RESPONSE_REJECT);
407         msg = string_compose(_("Just %1"), what);
408         window.add_button (msg, RESPONSE_APPLY);
409         msg = string_compose(_("Save and %1"), what);
410         window.add_button (msg, RESPONSE_ACCEPT);
411
412         window.set_default_response (RESPONSE_ACCEPT);
413
414         Gtk::Button noquit_button (msg);
415         noquit_button.set_name ("EditorGTKButton");
416
417         string prompt;
418         string type;
419
420         if (session->snap_name() == session->name()) {
421                 type = _("session");
422         } else {
423                 type = _("snapshot");
424         }
425         prompt = string_compose(_("The %1\"%2\"\nhas not been saved.\n\nAny changes made this time\nwill be lost unless you save it.\n\nWhat do you want to do?"), 
426                          type, session->snap_name());
427         
428         prompt_label.set_text (prompt);
429         prompt_label.set_name (X_("PrompterLabel"));
430         prompt_label.set_alignment(ALIGN_LEFT, ALIGN_TOP);
431
432         dimage->set_alignment(ALIGN_CENTER, ALIGN_TOP)
433 ;
434         dhbox.set_homogeneous (false);
435         dhbox.pack_start (*dimage, false, false, 5);
436         dhbox.pack_start (prompt_label, true, false, 5);
437         window.get_vbox()->pack_start (dhbox);
438
439         window.set_name (_("Prompter"));
440         window.set_position (Gtk::WIN_POS_MOUSE);
441         window.set_modal (true);
442         window.set_resizable (false);
443         window.show_all ();
444
445         save_the_session = 0;
446
447         editor->ensure_float (window);
448
449         ResponseType r = (ResponseType) window.run();
450
451         window.hide ();
452
453         switch (r) {
454         case RESPONSE_ACCEPT: // save and get out of here
455                 return 1;
456         case RESPONSE_APPLY:  // get out of here
457                 return 0;
458         default:
459                 break;
460         }
461
462         return -1;
463 }
464         
465 gint
466 ARDOUR_UI::every_second ()
467 {
468         update_cpu_load ();
469         update_buffer_load ();
470         update_disk_space ();
471         return TRUE;
472 }
473
474 gint
475 ARDOUR_UI::every_point_one_seconds ()
476 {
477         update_speed_display ();
478         RapidScreenUpdate(); /* EMIT_SIGNAL */
479         return TRUE;
480 }
481
482 gint
483 ARDOUR_UI::every_point_zero_one_seconds ()
484 {
485         SuperRapidScreenUpdate(); /* EMIT_SIGNAL */
486         return TRUE;
487 }
488
489 void
490 ARDOUR_UI::update_sample_rate (nframes_t ignored)
491 {
492         char buf[32];
493
494         ENSURE_GUI_THREAD (bind (mem_fun(*this, &ARDOUR_UI::update_sample_rate), ignored));
495
496         if (!engine->connected()) {
497
498                 snprintf (buf, sizeof (buf), _("disconnected"));
499
500         } else {
501
502                 nframes_t rate = engine->frame_rate();
503                 
504                 if (fmod (rate, 1000.0) != 0.0) {
505                         snprintf (buf, sizeof (buf), _("%.1f kHz / %4.1f msecs"), 
506                                   (float) rate/1000.0f,
507                                   (engine->frames_per_cycle() / (float) rate) * 1000.0f);
508                 } else {
509                         snprintf (buf, sizeof (buf), _("%u kHz / %4.1f msecs"), 
510                                   rate/1000,
511                                   (engine->frames_per_cycle() / (float) rate) * 1000.0f);
512                 }
513         }
514
515         sample_rate_label.set_text (buf);
516 }
517
518 void
519 ARDOUR_UI::update_cpu_load ()
520 {
521         char buf[32];
522         snprintf (buf, sizeof (buf), _("DSP: %.1f%%"), engine->get_cpu_load());
523         cpu_load_label.set_text (buf);
524 }
525
526 void
527 ARDOUR_UI::update_buffer_load ()
528 {
529         char buf[64];
530
531         if (session) {
532                 snprintf (buf, sizeof (buf), _("Buffers p:%" PRIu32 "%% c:%" PRIu32 "%%"), 
533                           session->playback_load(), session->capture_load());
534                 buffer_load_label.set_text (buf);
535         } else {
536                 buffer_load_label.set_text ("");
537         }
538 }
539
540 void
541 ARDOUR_UI::count_recenabled_diskstreams (Route& route)
542 {
543         Track* track = dynamic_cast<Track*>(&route);
544         if (track && track->diskstream()->record_enabled()) {
545                 rec_enabled_diskstreams++;
546         }
547 }
548
549 void
550 ARDOUR_UI::update_disk_space()
551 {
552         if (session == 0) {
553                 return;
554         }
555
556         nframes_t frames = session->available_capture_duration();
557         char buf[64];
558
559         if (frames == max_frames) {
560                 strcpy (buf, _("Disk: 24hrs+"));
561         } else {
562                 int hrs;
563                 int mins;
564                 int secs;
565                 nframes_t fr = session->frame_rate();
566                 
567                 rec_enabled_diskstreams = 0;
568                 session->foreach_route (this, &ARDOUR_UI::count_recenabled_diskstreams);
569                 
570                 if (rec_enabled_diskstreams) {
571                         frames /= rec_enabled_diskstreams;
572                 }
573                 
574                 hrs  = frames / (fr * 3600);
575                 frames -= hrs * fr * 3600;
576                 mins = frames / (fr * 60);
577                 frames -= mins * fr * 60;
578                 secs = frames / fr;
579                 
580                 snprintf (buf, sizeof(buf), _("Disk: %02dh:%02dm:%02ds"), hrs, mins, secs);
581         }
582
583         disk_space_label.set_text (buf);
584 }                 
585
586 gint
587 ARDOUR_UI::update_wall_clock ()
588 {
589         time_t now;
590         struct tm *tm_now;
591         char buf[16];
592
593         time (&now);
594         tm_now = localtime (&now);
595
596         sprintf (buf, "%02d:%02d", tm_now->tm_hour, tm_now->tm_min);
597         wall_clock_label.set_text (buf);
598
599         return TRUE;
600 }
601 void
602 ARDOUR_UI::control_methods_adjusted ()
603
604 {
605         int which_method;
606
607         which_method = (int) online_control_button->adjustment.get_value();
608         switch (which_method) {
609         case 0:
610                 allow_mmc_and_local ();
611                 break;
612         case 1:
613                 allow_mmc_only ();
614                 break;
615         case 2:
616                 allow_local_only ();
617                 break;
618         default:
619                 fatal << _("programming error: impossible control method") << endmsg;
620         }
621 }
622         
623
624 void
625 ARDOUR_UI::mmc_device_id_adjusted ()
626
627 {
628 #if 0
629         if (mmc) {
630                 int dev_id = (int) mmc_id_button->adjustment.get_value();
631                 mmc->set_device_id (dev_id);
632         }
633 #endif
634 }
635
636 gint
637 ARDOUR_UI::session_menu (GdkEventButton *ev)
638 {
639         session_popup_menu->popup (0, 0);
640         return TRUE;
641 }
642
643 void
644 ARDOUR_UI::redisplay_recent_sessions ()
645 {
646         vector<string *> *sessions;
647         vector<string *>::iterator i;
648         RecentSessionsSorter cmp;
649         
650         recent_session_display.set_model (Glib::RefPtr<TreeModel>(0));
651         recent_session_model->clear ();
652
653         RecentSessions rs;
654         ARDOUR::read_recent_sessions (rs);
655
656         if (rs.empty()) {
657                 recent_session_display.set_model (recent_session_model);
658                 return;
659         }
660
661         /* sort them alphabetically */
662         sort (rs.begin(), rs.end(), cmp);
663         sessions = new vector<string*>;
664
665         for (RecentSessions::iterator i = rs.begin(); i != rs.end(); ++i) {
666                 sessions->push_back (new string ((*i).second));
667         }
668
669         for (i = sessions->begin(); i != sessions->end(); ++i) {
670
671                 vector<string*>* states;
672                 vector<const gchar*> item;
673                 string fullpath = *(*i);
674                 
675                 /* remove any trailing / */
676
677                 if (fullpath[fullpath.length()-1] == '/') {
678                         fullpath = fullpath.substr (0, fullpath.length()-1);
679                 }
680
681                 /* now get available states for this session */
682
683                 if ((states = Session::possible_states (fullpath)) == 0) {
684                         /* no state file? */
685                         continue;
686                 }
687
688                 TreeModel::Row row = *(recent_session_model->append());
689
690                 row[recent_session_columns.visible_name] = Glib::path_get_basename (fullpath);
691                 row[recent_session_columns.fullpath] = fullpath;
692
693                 if (states->size() > 1) {
694
695                         /* add the children */
696                         
697                         for (vector<string*>::iterator i2 = states->begin(); i2 != states->end(); ++i2) {
698                                 
699                                 TreeModel::Row child_row = *(recent_session_model->append (row.children()));
700
701                                 child_row[recent_session_columns.visible_name] = **i2;
702                                 child_row[recent_session_columns.fullpath] = fullpath;
703
704                                 delete *i2;
705                         }
706                 }
707
708                 delete states;
709         }
710
711         recent_session_display.set_model (recent_session_model);
712         delete sessions;
713 }
714
715 void
716 ARDOUR_UI::build_session_selector ()
717 {
718         session_selector_window = new ArdourDialog ("session selector");
719         
720         Gtk::ScrolledWindow *scroller = manage (new Gtk::ScrolledWindow);
721         
722         session_selector_window->add_button (Stock::CANCEL, RESPONSE_CANCEL);
723         session_selector_window->add_button (Stock::OPEN, RESPONSE_ACCEPT);
724         session_selector_window->set_default_response (RESPONSE_ACCEPT);
725         recent_session_model = TreeStore::create (recent_session_columns);
726         recent_session_display.set_model (recent_session_model);
727         recent_session_display.append_column (_("Recent Sessions"), recent_session_columns.visible_name);
728         recent_session_display.set_headers_visible (false);
729         recent_session_display.get_selection()->set_mode (SELECTION_SINGLE);
730
731         recent_session_display.signal_row_activated().connect (mem_fun (*this, &ARDOUR_UI::recent_session_row_activated));
732
733         scroller->add (recent_session_display);
734         scroller->set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
735
736         session_selector_window->set_name ("SessionSelectorWindow");
737         session_selector_window->set_size_request (200, 400);
738         session_selector_window->get_vbox()->pack_start (*scroller);
739         session_selector_window->show_all_children();
740 }
741
742 void
743 ARDOUR_UI::recent_session_row_activated (const TreePath& path, TreeViewColumn* col)
744 {
745         session_selector_window->response (RESPONSE_ACCEPT);
746 }
747
748 void
749 ARDOUR_UI::open_recent_session ()
750 {
751         /* popup selector window */
752
753         if (session_selector_window == 0) {
754                 build_session_selector ();
755         }
756
757         redisplay_recent_sessions ();
758
759         ResponseType r = (ResponseType) session_selector_window->run ();
760
761         session_selector_window->hide();
762
763         switch (r) {
764         case RESPONSE_ACCEPT:
765                 break;
766         default:
767                 return;
768         }
769
770         Gtk::TreeModel::iterator i = recent_session_display.get_selection()->get_selected();
771
772         if (i == recent_session_model->children().end()) {
773                 return;
774         }
775         
776         Glib::ustring path = (*i)[recent_session_columns.fullpath];
777         Glib::ustring state = (*i)[recent_session_columns.visible_name];
778
779         _session_is_new = false;
780
781         load_session (path, state);
782 }
783
784 bool
785 ARDOUR_UI::filter_ardour_session_dirs (const FileFilter::Info& info) 
786 {
787         struct stat statbuf;
788
789         if (stat (info.filename.c_str(), &statbuf) != 0) {
790                 return false;
791         }
792
793         if (!S_ISDIR(statbuf.st_mode)) {
794                 return false;
795         }
796
797         // XXX Portability
798         
799         string session_file = info.filename;
800         session_file += '/';
801         session_file += Glib::path_get_basename (info.filename);
802         session_file += ".ardour";
803         
804         if (stat (session_file.c_str(), &statbuf) != 0) {
805                 return false;
806         }
807
808         return S_ISREG (statbuf.st_mode);
809 }
810
811 void
812 ARDOUR_UI::open_session ()
813 {
814         /* popup selector window */
815
816         if (open_session_selector == 0) {
817
818                 /* ardour sessions are folders */
819
820                 open_session_selector = new Gtk::FileChooserDialog (_("open session"), FILE_CHOOSER_ACTION_OPEN);
821                 open_session_selector->add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
822                 open_session_selector->add_button (Gtk::Stock::OPEN, Gtk::RESPONSE_ACCEPT);
823
824                 FileFilter session_filter;
825                 session_filter.add_pattern ("*.ardour");
826                 session_filter.set_name (_("Ardour sessions"));
827                 open_session_selector->add_filter (session_filter);
828                 open_session_selector->set_filter (session_filter);
829         }
830
831         int response = open_session_selector->run();
832         open_session_selector->hide ();
833
834         switch (response) {
835         case RESPONSE_ACCEPT:
836                 break;
837         default:
838                 open_session_selector->hide();
839                 return;
840         }
841
842         open_session_selector->hide();
843         string session_path = open_session_selector->get_filename();
844         string path, name;
845         bool isnew;
846
847         if (session_path.length() > 0) {
848                 if (Session::find_session (session_path, path, name, isnew) == 0) {
849                         _session_is_new = isnew;
850                         load_session (path, name);
851                 }
852         }
853 }
854
855
856 void
857 ARDOUR_UI::session_add_midi_track ()
858 {
859         cerr << _("Patience is a virtue.\n");
860 }
861
862 void
863 ARDOUR_UI::session_add_audio_route (bool track, int32_t input_channels, int32_t output_channels, ARDOUR::TrackMode mode, uint32_t how_many)
864 {
865         list<boost::shared_ptr<AudioTrack> > tracks;
866         Session::RouteList routes;
867
868         if (session == 0) {
869                 warning << _("You cannot add a track or bus without a session already loaded.") << endmsg;
870                 return;
871         }
872
873         try { 
874                 if (track) {
875                         tracks = session->new_audio_track (input_channels, output_channels, mode, how_many);
876
877                         if (tracks.size() != how_many) {
878                                 if (how_many == 1) {
879                                         error << _("could not create a new audio track") << endmsg;
880                                 } else {
881                                         error << string_compose (_("could not create %1 new audio tracks"), how_many) << endmsg;
882                                 }
883                         }
884
885                 } else {
886
887                         routes = session->new_audio_route (input_channels, output_channels, how_many);
888
889                         if (routes.size() != how_many) {
890                                 if (how_many == 1) {
891                                         error << _("could not create a new audio track") << endmsg;
892                                 } else {
893                                         error << string_compose (_("could not create %1 new audio tracks"), how_many) << endmsg;
894                                 }
895                         }
896                 }
897                 
898 #if CONTROLOUTS
899                 if (need_control_room_outs) {
900                         pan_t pans[2];
901                         
902                         pans[0] = 0.5;
903                         pans[1] = 0.5;
904                         
905                         route->set_stereo_control_outs (control_lr_channels);
906                         route->control_outs()->set_stereo_pan (pans, this);
907                 }
908 #endif /* CONTROLOUTS */
909         }
910
911         catch (...) {
912                 MessageDialog msg (*editor, 
913                                    _("There are insufficient JACK ports available\n\
914 to create a new track or bus.\n\
915 You should save Ardour, exit and\n\
916 restart JACK with more ports."));
917                 msg.run ();
918         }
919 }
920
921 void
922 ARDOUR_UI::do_transport_locate (nframes_t new_position)
923 {
924         nframes_t _preroll = 0;
925
926         if (session) {
927                 // XXX CONFIG_CHANGE FIX - requires AnyTime handling
928                 // _preroll = session->convert_to_frames_at (new_position, Config->get_preroll());
929
930                 if (new_position > _preroll) {
931                         new_position -= _preroll;
932                 } else {
933                         new_position = 0;
934                 }
935
936                 session->request_locate (new_position);
937         }
938 }
939
940 void
941 ARDOUR_UI::transport_goto_start ()
942 {
943         if (session) {
944                 session->goto_start();
945
946                 
947                 /* force displayed area in editor to start no matter
948                    what "follow playhead" setting is.
949                 */
950                 
951                 if (editor) {
952                         editor->reposition_x_origin (session->current_start_frame());
953                 }
954         }
955 }
956
957 void
958 ARDOUR_UI::transport_goto_zero ()
959 {
960         if (session) {
961                 session->request_locate (0);
962
963                 
964                 /* force displayed area in editor to start no matter
965                    what "follow playhead" setting is.
966                 */
967                 
968                 if (editor) {
969                         editor->reposition_x_origin (0);
970                 }
971         }
972 }
973
974 void
975 ARDOUR_UI::transport_goto_end ()
976 {
977         if (session) {
978                 nframes_t frame = session->current_end_frame();
979                 session->request_locate (frame);
980
981                 /* force displayed area in editor to start no matter
982                    what "follow playhead" setting is.
983                 */
984                 
985                 if (editor) {
986                         editor->reposition_x_origin (frame);
987                 }
988         }
989 }
990
991 void
992 ARDOUR_UI::transport_stop ()
993 {
994         if (!session) {
995                 return;
996         }
997
998         if (session->is_auditioning()) {
999                 session->cancel_audition ();
1000                 return;
1001         }
1002         
1003         if (Config->get_auto_loop()) {
1004                 session->request_play_loop (false);
1005         }
1006         
1007         session->request_stop ();
1008 }
1009
1010 void
1011 ARDOUR_UI::transport_stop_and_forget_capture ()
1012 {
1013         if (session) {
1014                 session->request_stop (true);
1015         }
1016 }
1017
1018 void
1019 ARDOUR_UI::remove_last_capture()
1020 {
1021         if (editor) {
1022                 editor->remove_last_capture();
1023         }
1024 }
1025
1026 void
1027 ARDOUR_UI::transport_record ()
1028 {
1029         if (session) {
1030                 switch (session->record_status()) {
1031                 case Session::Disabled:
1032                         if (session->ntracks() == 0) {
1033                                 MessageDialog msg (*editor, _("Please create 1 or more track\nbefore trying to record.\nCheck the Session menu."));
1034                                 msg.run ();
1035                                 return;
1036                         }
1037                         session->maybe_enable_record ();
1038                         break;
1039                 case Session::Recording:
1040                 case Session::Enabled:
1041                         session->disable_record (true);
1042                 }
1043         }
1044 }
1045
1046 void
1047 ARDOUR_UI::transport_roll ()
1048 {
1049         bool rolling;
1050
1051         if (!session) {
1052                 return;
1053         }
1054
1055         rolling = session->transport_rolling ();
1056
1057         if (Config->get_auto_loop()) {
1058                 session->request_play_loop (false);
1059                 auto_loop_button.set_active (false);
1060                 roll_button.set_active (true);
1061         } else if (session->get_play_range ()) {
1062                 session->request_play_range (false);
1063                 play_selection_button.set_active (false);
1064         } else if (rolling) {
1065                 session->request_locate (session->last_transport_start(), true);
1066         }
1067
1068         session->request_transport_speed (1.0f);
1069 }
1070
1071 void
1072 ARDOUR_UI::transport_loop()
1073 {
1074         if (session) {
1075                 if (Config->get_auto_loop()) {
1076                         if (session->transport_rolling()) {
1077                                 Location * looploc = session->locations()->auto_loop_location();
1078                                 if (looploc) {
1079                                         session->request_locate (looploc->start(), true);
1080                                 }
1081                         }
1082                 }
1083                 else {
1084                         session->request_play_loop (true);
1085                 }
1086         }
1087 }
1088
1089 void
1090 ARDOUR_UI::transport_play_selection ()
1091 {
1092         if (!session) {
1093                 return;
1094         }
1095
1096         if (!session->get_play_range()) {
1097                 session->request_stop ();
1098         }
1099
1100         editor->play_selection ();
1101 }
1102
1103 void
1104 ARDOUR_UI::transport_rewind (int option)
1105 {
1106         float current_transport_speed;
1107  
1108         if (session) {
1109                 current_transport_speed = session->transport_speed();
1110                 
1111                 if (current_transport_speed >= 0.0f) {
1112                         switch (option) {
1113                         case 0:
1114                                 session->request_transport_speed (-1.0f);
1115                                 break;
1116                         case 1:
1117                                 session->request_transport_speed (-4.0f);
1118                                 break;
1119                         case -1:
1120                                 session->request_transport_speed (-0.5f);
1121                                 break;
1122                         }
1123                 } else {
1124                         /* speed up */
1125                         session->request_transport_speed (current_transport_speed * 1.5f);
1126                 }
1127         }
1128 }
1129
1130 void
1131 ARDOUR_UI::transport_forward (int option)
1132 {
1133         float current_transport_speed;
1134         
1135         if (session) {
1136                 current_transport_speed = session->transport_speed();
1137                 
1138                 if (current_transport_speed <= 0.0f) {
1139                         switch (option) {
1140                         case 0:
1141                                 session->request_transport_speed (1.0f);
1142                                 break;
1143                         case 1:
1144                                 session->request_transport_speed (4.0f);
1145                                 break;
1146                         case -1:
1147                                 session->request_transport_speed (0.5f);
1148                                 break;
1149                         }
1150                 } else {
1151                         /* speed up */
1152                         session->request_transport_speed (current_transport_speed * 1.5f);
1153                 }
1154         }
1155 }
1156
1157 void
1158 ARDOUR_UI::toggle_record_enable (uint32_t dstream)
1159 {
1160         if (session == 0) {
1161                 return;
1162         }
1163
1164         boost::shared_ptr<Route> r;
1165         
1166         if ((r = session->route_by_remote_id (dstream)) != 0) {
1167
1168                 Track* t;
1169
1170                 if ((t = dynamic_cast<Track*>(r.get())) != 0) {
1171                         t->diskstream()->set_record_enabled (!t->diskstream()->record_enabled());
1172                 }
1173         }
1174         if (session == 0) {
1175                 return;
1176         }
1177 }
1178
1179 void
1180 ARDOUR_UI::queue_transport_change ()
1181 {
1182         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &ARDOUR_UI::map_transport_state));
1183 }
1184
1185 void
1186 ARDOUR_UI::map_transport_state ()
1187 {
1188         float sp = session->transport_speed();
1189
1190         if (sp == 1.0f) {
1191                 transport_rolling ();
1192         } else if (sp < 0.0f) {
1193                 transport_rewinding ();
1194         } else if (sp > 0.0f) {
1195                 transport_forwarding ();
1196         } else {
1197                 transport_stopped ();
1198         }
1199 }
1200
1201 void
1202 ARDOUR_UI::allow_local_only ()
1203 {
1204
1205 }
1206
1207 void
1208 ARDOUR_UI::allow_mmc_only ()
1209 {
1210
1211 }
1212
1213 void
1214 ARDOUR_UI::allow_mmc_and_local ()
1215 {
1216
1217 }
1218
1219 void
1220 ARDOUR_UI::GlobalClickBox::printer (char buf[32], Adjustment &adj, void *arg)
1221 {
1222         snprintf (buf, sizeof(buf), "%s", ((GlobalClickBox *) arg)->strings[
1223                 (int) adj.get_value()].c_str());
1224 }
1225
1226 void
1227 ARDOUR_UI::engine_stopped ()
1228 {
1229         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::engine_stopped));
1230         ActionManager::set_sensitive (ActionManager::jack_sensitive_actions, false);
1231         ActionManager::set_sensitive (ActionManager::jack_opposite_sensitive_actions, true);
1232 }
1233
1234
1235 void
1236 ARDOUR_UI::engine_running ()
1237 {
1238         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::engine_running));
1239         ActionManager::set_sensitive (ActionManager::jack_sensitive_actions, true);
1240         ActionManager::set_sensitive (ActionManager::jack_opposite_sensitive_actions, false);
1241 }
1242
1243 void
1244 ARDOUR_UI::engine_halted ()
1245 {
1246         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::engine_halted));
1247
1248         ActionManager::set_sensitive (ActionManager::jack_sensitive_actions, false);
1249         ActionManager::set_sensitive (ActionManager::jack_opposite_sensitive_actions, true);
1250
1251         update_sample_rate (0);
1252
1253         MessageDialog msg (*editor, 
1254                            _("\
1255 JACK has either been shutdown or it\n\
1256 disconnected Ardour because Ardour\n\
1257 was not fast enough. You can save the\n\
1258 session and/or try to reconnect to JACK ."));
1259         msg.run ();
1260 }
1261
1262 int32_t
1263 ARDOUR_UI::do_engine_start ()
1264 {
1265         try { 
1266                 engine->start();
1267         }
1268
1269         catch (AudioEngine::PortRegistrationFailure& err) {
1270                 engine->stop ();
1271                 error << _("Unable to create all required ports")
1272                       << endmsg;
1273                 unload_session ();
1274                 return -1;
1275         }
1276
1277         catch (...) {
1278                 engine->stop ();
1279                 error << _("Unable to start the session running")
1280                       << endmsg;
1281                 unload_session ();
1282                 return -2;
1283         }
1284         
1285         return 0;
1286 }
1287
1288 gint
1289 ARDOUR_UI::start_engine ()
1290 {
1291         if (do_engine_start () == 0) {
1292                 if (session && _session_is_new) {
1293                         /* we need to retain initial visual 
1294                            settings for a new session 
1295                         */
1296                         session->save_state ("");
1297                 }
1298
1299                 /* there is too much going on, in too many threads, for us to 
1300                    end up with a clean session. So wait 1 second after loading,
1301                    and fix it up. its ugly, but until i come across a better
1302                    solution, its what we have.
1303                 */
1304
1305                 Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::make_session_clean), 1000);
1306         }
1307
1308         return FALSE;
1309 }
1310
1311 void
1312 ARDOUR_UI::update_clocks ()
1313 {
1314          Clock (session->audible_frame()); /* EMIT_SIGNAL */
1315 }
1316
1317 void
1318 ARDOUR_UI::start_clocking ()
1319 {
1320         clock_signal_connection = RapidScreenUpdate.connect (mem_fun(*this, &ARDOUR_UI::update_clocks));
1321 }
1322
1323 void
1324 ARDOUR_UI::stop_clocking ()
1325 {
1326         clock_signal_connection.disconnect ();
1327 }
1328         
1329 void
1330 ARDOUR_UI::toggle_clocking ()
1331 {
1332 #if 0
1333         if (clock_button.get_active()) {
1334                 start_clocking ();
1335         } else {
1336                 stop_clocking ();
1337         }
1338 #endif
1339 }
1340
1341 gint
1342 ARDOUR_UI::_blink (void *arg)
1343
1344 {
1345         ((ARDOUR_UI *) arg)->blink ();
1346         return TRUE;
1347 }
1348
1349 void
1350 ARDOUR_UI::blink ()
1351 {
1352          Blink (blink_on = !blink_on); /* EMIT_SIGNAL */
1353 }
1354
1355 void
1356 ARDOUR_UI::start_blinking ()
1357 {
1358         /* Start the blink signal. Everybody with a blinking widget
1359            uses Blink to drive the widget's state.
1360         */
1361
1362         if (blink_timeout_tag < 0) {
1363                 blink_on = false;       
1364                 blink_timeout_tag = g_timeout_add (240, _blink, this);
1365         }
1366 }
1367
1368 void
1369 ARDOUR_UI::stop_blinking ()
1370 {
1371         if (blink_timeout_tag >= 0) {
1372                 g_source_remove (blink_timeout_tag);
1373                 blink_timeout_tag = -1;
1374         }
1375 }
1376
1377 void
1378 ARDOUR_UI::name_io_setup (AudioEngine& engine, 
1379                           string& buf,
1380                           IO& io,
1381                           bool in)
1382 {
1383         if (in) {
1384                 if (io.n_inputs() == 0) {
1385                         buf = _("none");
1386                         return;
1387                 }
1388                 
1389                 /* XXX we're not handling multiple ports yet. */
1390
1391                 const char **connections = io.input(0)->get_connections();
1392                 
1393                 if (connections == 0 || connections[0] == '\0') {
1394                         buf = _("off");
1395                 } else {
1396                         buf = connections[0];
1397                 }
1398
1399                 free (connections);
1400
1401         } else {
1402
1403                 if (io.n_outputs() == 0) {
1404                         buf = _("none");
1405                         return;
1406                 }
1407                 
1408                 /* XXX we're not handling multiple ports yet. */
1409
1410                 const char **connections = io.output(0)->get_connections();
1411                 
1412                 if (connections == 0 || connections[0] == '\0') {
1413                         buf = _("off");
1414                 } else {
1415                         buf = connections[0];
1416                 }
1417
1418                 free (connections);
1419         }
1420 }
1421
1422 void
1423 ARDOUR_UI::snapshot_session ()
1424 {
1425         ArdourPrompter prompter (true);
1426         string snapname;
1427         string now;
1428         time_t n;
1429
1430         time (&n);
1431         now = ctime (&n);
1432         now = now.substr (20, 4) + now.substr (3, 16) + " (" + now.substr (0, 3) + ")";
1433
1434         prompter.set_name ("Prompter");
1435         prompter.add_button (Gtk::Stock::SAVE, Gtk::RESPONSE_ACCEPT);
1436         prompter.set_response_sensitive (Gtk::RESPONSE_ACCEPT, false);
1437         prompter.set_prompt (_("Name of New Snapshot"));
1438         prompter.set_initial_text (now);
1439         
1440         switch (prompter.run()) {
1441         case RESPONSE_ACCEPT:
1442                 prompter.get_result (snapname);
1443                 if (snapname.length()){
1444                         save_state (snapname);
1445                 }
1446                 break;
1447
1448         default:
1449                 break;
1450         }
1451 }
1452
1453 void
1454 ARDOUR_UI::save_state (const string & name)
1455 {
1456         (void) save_state_canfail (name);
1457 }
1458                 
1459 int
1460 ARDOUR_UI::save_state_canfail (string name)
1461 {
1462         if (session) {
1463                 int ret;
1464
1465                 if (name.length() == 0) {
1466                         name = session->snap_name();
1467                 }
1468
1469                 if ((ret = session->save_state (name)) != 0) {
1470                         return ret;
1471                 }
1472         }
1473         save_ardour_state (); /* XXX cannot fail? yeah, right ... */
1474         return 0;
1475 }
1476
1477 void
1478 ARDOUR_UI::restore_state (string name)
1479 {
1480         if (session) {
1481                 if (name.length() == 0) {
1482                         name = session->name();
1483                 }
1484                 session->restore_state (name);
1485         }
1486 }
1487
1488 void
1489 ARDOUR_UI::primary_clock_value_changed ()
1490 {
1491         if (session) {
1492                 session->request_locate (primary_clock.current_time ());
1493         }
1494 }
1495
1496 void
1497 ARDOUR_UI::secondary_clock_value_changed ()
1498 {
1499         if (session) {
1500                 session->request_locate (secondary_clock.current_time ());
1501         }
1502 }
1503
1504 void
1505 ARDOUR_UI::rec_enable_button_blink (bool onoff, AudioDiskstream *dstream, Widget *w)
1506 {
1507         if (session && dstream && dstream->record_enabled()) {
1508
1509                 Session::RecordState rs;
1510                 
1511                 rs = session->record_status ();
1512
1513                 switch (rs) {
1514                 case Session::Disabled:
1515                 case Session::Enabled:
1516                         if (w->get_state() != STATE_SELECTED) {
1517                                 w->set_state (STATE_SELECTED);
1518                         }
1519                         break;
1520
1521                 case Session::Recording:
1522                         if (w->get_state() != STATE_ACTIVE) {
1523                                 w->set_state (STATE_ACTIVE);
1524                         }
1525                         break;
1526                 }
1527
1528         } else {
1529                 if (w->get_state() != STATE_NORMAL) {
1530                         w->set_state (STATE_NORMAL);
1531                 }
1532         }
1533 }
1534
1535 void
1536 ARDOUR_UI::transport_rec_enable_blink (bool onoff) 
1537 {
1538         if (session == 0) {
1539                 return;
1540         }
1541         
1542         switch (session->record_status()) {
1543         case Session::Enabled:
1544                 if (onoff) {
1545                         rec_button.set_state (1);
1546                 } else {
1547                         rec_button.set_state (0);
1548                 }
1549                 break;
1550
1551         case Session::Recording:
1552                 rec_button.set_state (2);
1553                 break;
1554
1555         default:
1556                 rec_button.set_state (0);
1557                 break;
1558         }
1559 }
1560
1561 gint
1562 ARDOUR_UI::hide_and_quit (GdkEventAny *ev, ArdourDialog *window)
1563 {
1564         window->hide();
1565         Gtk::Main::quit ();
1566         return TRUE;
1567 }
1568
1569 void
1570 ARDOUR_UI::start_keyboard_prefix ()
1571 {
1572         keyboard->start_prefix();
1573 }
1574
1575 void
1576 ARDOUR_UI::save_template ()
1577
1578 {
1579         ArdourPrompter prompter (true);
1580         string name;
1581
1582         prompter.set_name (X_("Prompter"));
1583         prompter.set_prompt (_("Name for mix template:"));
1584         prompter.set_initial_text(session->name() + _("-template"));
1585         prompter.add_button (Gtk::Stock::SAVE, Gtk::RESPONSE_ACCEPT);
1586         prompter.set_response_sensitive (Gtk::RESPONSE_ACCEPT, false);
1587
1588         switch (prompter.run()) {
1589         case RESPONSE_ACCEPT:
1590                 prompter.get_result (name);
1591                 
1592                 if (name.length()) {
1593                         session->save_template (name);
1594                 }
1595                 break;
1596
1597         default:
1598                 break;
1599         }
1600 }
1601
1602 void
1603 ARDOUR_UI::new_session (bool startup, std::string predetermined_path)
1604 {
1605         string session_name;
1606         string session_path;
1607
1608         int response = Gtk::RESPONSE_NONE;
1609
1610         new_session_dialog->set_modal(true);
1611         new_session_dialog->set_name(predetermined_path);
1612         new_session_dialog->reset_recent();
1613         new_session_dialog->show();
1614
1615         do {
1616                 response = new_session_dialog->run ();
1617
1618                 if(response == Gtk::RESPONSE_CANCEL || response == Gtk::RESPONSE_DELETE_EVENT) {
1619                         quit();
1620                         return;
1621
1622                 } else if (response == Gtk::RESPONSE_NONE) {
1623                         /* Clear was pressed */
1624                         new_session_dialog->reset();
1625
1626                 } else if (response == Gtk::RESPONSE_YES) {
1627
1628                         /* YES  == OPEN, but there's no enum for that */
1629
1630                         session_name = new_session_dialog->session_name();
1631                         
1632                         if (session_name.empty()) {
1633                                 response = Gtk::RESPONSE_NONE;
1634                                 continue;
1635                         } 
1636
1637                         if (session_name[0] == '/' || 
1638                             (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
1639                             (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
1640                                 load_session (Glib::path_get_dirname (session_name), session_name);
1641                         } else {
1642                                 session_path = new_session_dialog->session_folder();
1643                                 load_session (session_path, session_name);
1644                         }
1645                         
1646                 } else if (response == Gtk::RESPONSE_OK) {
1647
1648                         session_name = new_session_dialog->session_name();
1649                         
1650                         if (new_session_dialog->get_current_page() == 1) {
1651                   
1652                                 /* XXX this is a bit of a hack.. 
1653                                    i really want the new sesion dialog to return RESPONSE_YES
1654                                    if we're on page 1 (the load page)
1655                                    Unfortunately i can't see how atm.. 
1656                                 */
1657                                 
1658                                 if (session_name.empty()) {
1659                                         response = Gtk::RESPONSE_NONE;
1660                                         continue;
1661                                 } 
1662                                 
1663                                 if (session_name[0] == '/' || 
1664                                     (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
1665                                     (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
1666                                         load_session (Glib::path_get_dirname (session_name), session_name);
1667                                 } else {
1668                                         session_path = new_session_dialog->session_folder();
1669                                         load_session (session_path, session_name);
1670                                 }
1671                         
1672                         } else {
1673
1674                                 _session_is_new = true;
1675                               
1676                                 if (session_name.empty()) {
1677                                         response = Gtk::RESPONSE_NONE;
1678                                         continue;
1679                                 } 
1680
1681                                 if (session_name[0] == '/' || 
1682                                     (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
1683                                     (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
1684
1685                                         session_path = Glib::path_get_dirname (session_name);
1686                                         session_name = Glib::path_get_basename (session_name);
1687
1688                                 } else {
1689
1690                                         session_path = new_session_dialog->session_folder();
1691                                         
1692                                 }
1693                         
1694                                 //XXX This is needed because session constructor wants a 
1695                                 //non-existant path. hopefully this will be fixed at some point.
1696                                 
1697                                 session_path = Glib::build_filename (session_path, session_name);
1698                                                 
1699                                 std::string template_name = new_session_dialog->session_template_name();
1700                                                 
1701                                 if (new_session_dialog->use_session_template()) {
1702                                                         
1703                                         load_session (session_path, session_name, &template_name);
1704                           
1705                                 } else {
1706                                                         
1707                                         uint32_t cchns;
1708                                         uint32_t mchns;
1709                                         AutoConnectOption iconnect;
1710                                         AutoConnectOption oconnect;
1711                                                         
1712                                         if (new_session_dialog->create_control_bus()) {
1713                                                 cchns = (uint32_t) new_session_dialog->control_channel_count();
1714                                         } else {
1715                                                 cchns = 0;
1716                                         }
1717                                                         
1718                                         if (new_session_dialog->create_master_bus()) {
1719                                                 mchns = (uint32_t) new_session_dialog->master_channel_count();
1720                                         } else {
1721                                                 mchns = 0;
1722                                         }
1723                                                         
1724                                         if (new_session_dialog->connect_inputs()) {
1725                                                 iconnect = AutoConnectPhysical;
1726                                         } else {
1727                                                 iconnect = AutoConnectOption (0);
1728                                         }
1729                                                         
1730                                         /// @todo some minor tweaks.
1731                                                         
1732                                         if (new_session_dialog->connect_outs_to_master()) {
1733                                                 oconnect = AutoConnectMaster;
1734                                         } else if (new_session_dialog->connect_outs_to_physical()) {
1735                                                 oconnect = AutoConnectPhysical;
1736                                         } else {
1737                                                 oconnect = AutoConnectOption (0);
1738                                         } 
1739                                                         
1740                                         uint32_t nphysin = (uint32_t) new_session_dialog->input_limit_count();
1741                                         uint32_t nphysout = (uint32_t) new_session_dialog->output_limit_count();
1742                                                         
1743                                         build_session (session_path,
1744                                                        session_name,
1745                                                        cchns,
1746                                                        mchns,
1747                                                        iconnect,
1748                                                        oconnect,
1749                                                        nphysin,
1750                                                        nphysout, 
1751                                                        engine->frame_rate() * 60 * 5);
1752                                 }
1753                         }
1754                 }
1755                 
1756         } while (response == Gtk::RESPONSE_NONE);
1757
1758         show();
1759         new_session_dialog->get_window()->set_cursor();
1760         new_session_dialog->hide();
1761 }
1762
1763 void
1764 ARDOUR_UI::close_session()
1765 {
1766         unload_session();
1767         new_session ();
1768 }
1769
1770 int
1771 ARDOUR_UI::load_session (const string & path, const string & snap_name, string* mix_template)
1772 {
1773         Session *new_session;
1774         int x;
1775         session_loaded = false;
1776         x = unload_session ();
1777
1778         if (x < 0) {
1779                 return -1;
1780         } else if (x > 0) {
1781                 return 0;
1782         }
1783
1784         /* if it already exists, we must have write access */
1785
1786         if (::access (path.c_str(), F_OK) == 0 && ::access (path.c_str(), W_OK)) {
1787                 MessageDialog msg (*editor, _("\
1788 You do not have write access to this session.\n\
1789 This prevents the session from being loaded."));
1790                 msg.run ();
1791                 return -1;
1792         }
1793
1794         try {
1795                 new_session = new Session (*engine, path, snap_name, mix_template);
1796         }
1797
1798         catch (...) {
1799
1800                 error << string_compose(_("Session \"%1 (snapshot %2)\" did not load successfully"), path, snap_name) << endmsg;
1801                 return -1;
1802         }
1803
1804         connect_to_session (new_session);
1805
1806         Config->set_current_owner (ConfigVariableBase::Interface);
1807
1808         session_loaded = true;
1809         return 0;
1810 }
1811
1812 int
1813 ARDOUR_UI::make_session_clean ()
1814 {
1815         if (session) {
1816                 session->set_clean ();
1817         }
1818
1819         show ();
1820
1821         return FALSE;
1822 }
1823
1824 int
1825 ARDOUR_UI::build_session (const string & path, const string & snap_name, 
1826                           uint32_t control_channels,
1827                           uint32_t master_channels, 
1828                           AutoConnectOption input_connect,
1829                           AutoConnectOption output_connect,
1830                           uint32_t nphysin,
1831                           uint32_t nphysout,
1832                           nframes_t initial_length)
1833 {
1834         Session *new_session;
1835         int x;
1836
1837         session_loaded = false;
1838         x = unload_session ();
1839         if (x < 0) {
1840                 return -1;
1841         } else if (x > 0) {
1842                 return 0;
1843         }
1844         
1845         _session_is_new = true;
1846
1847         try {
1848                 new_session = new Session (*engine, path, snap_name, input_connect, output_connect,
1849                                            control_channels, master_channels, nphysin, nphysout, initial_length);
1850         }
1851
1852         catch (...) {
1853
1854                 error << string_compose(_("Session \"%1 (snapshot %2)\" did not load successfully"), path, snap_name) << endmsg;
1855                 return -1;
1856         }
1857
1858         connect_to_session (new_session);
1859
1860         session_loaded = true;
1861         return 0;
1862 }
1863
1864 void
1865 ARDOUR_UI::show ()
1866 {
1867         if (editor) {
1868                 editor->show_window ();
1869                 
1870                 if (!shown_flag) {
1871                         editor->present ();
1872                 }
1873
1874                 shown_flag = true;
1875         }
1876         
1877         if (about) {
1878                 about->present ();
1879         }
1880 }
1881
1882 void
1883 ARDOUR_UI::show_splash ()
1884 {
1885         if (about == 0) {
1886                 about = new About();
1887         }
1888         about->present();
1889 }
1890
1891 void
1892 ARDOUR_UI::hide_splash ()
1893 {
1894         if (about) {
1895                 about->get_window()->set_cursor ();
1896                 about->hide();
1897         }
1898 }
1899
1900 void
1901 ARDOUR_UI::display_cleanup_results (Session::cleanup_report& rep, const gchar* list_title, const string & msg)
1902 {
1903         size_t removed;
1904
1905         removed = rep.paths.size();
1906
1907         if (removed == 0) {
1908                 MessageDialog msgd (*editor,
1909                                     _("No audio files were ready for cleanup"), 
1910                                     true,
1911                                     Gtk::MESSAGE_INFO,
1912                                     (Gtk::ButtonsType)(Gtk::BUTTONS_CLOSE)  );
1913                 msgd.set_secondary_text (_("If this seems suprising, \n\
1914 check for any existing snapshots.\n\
1915 These may still include regions that\n\
1916 require some unused files to continue to exist."));
1917         
1918                 msgd.run ();
1919                 return;
1920         } 
1921
1922         ArdourDialog results (_("ardour: cleanup"), true, false);
1923         
1924         struct CleanupResultsModelColumns : public Gtk::TreeModel::ColumnRecord {
1925             CleanupResultsModelColumns() { 
1926                     add (visible_name);
1927                     add (fullpath);
1928             }
1929             Gtk::TreeModelColumn<Glib::ustring> visible_name;
1930             Gtk::TreeModelColumn<Glib::ustring> fullpath;
1931         };
1932
1933         
1934         CleanupResultsModelColumns results_columns;
1935         Glib::RefPtr<Gtk::ListStore> results_model;
1936         Gtk::TreeView results_display;
1937         
1938         results_model = ListStore::create (results_columns);
1939         results_display.set_model (results_model);
1940         results_display.append_column (list_title, results_columns.visible_name);
1941
1942         results_display.set_name ("CleanupResultsList");
1943         results_display.set_headers_visible (true);
1944         results_display.set_headers_clickable (false);
1945         results_display.set_reorderable (false);
1946
1947         Gtk::ScrolledWindow list_scroller;
1948         Gtk::Label txt;
1949         Gtk::VBox dvbox;
1950         Gtk::HBox dhbox;  // the hbox for the image and text
1951         Gtk::HBox ddhbox; // the hbox we eventually pack into the dialog's vbox
1952         Gtk::Image* dimage = manage (new Gtk::Image(Stock::DIALOG_INFO,  Gtk::ICON_SIZE_DIALOG));
1953
1954         dimage->set_alignment(ALIGN_LEFT, ALIGN_TOP);
1955
1956         if (rep.space < 1048576.0f) {
1957                 if (removed > 1) {
1958                   txt.set_text (string_compose (msg, removed, _("files were"), session->path() + "dead_sounds", (float) rep.space / 1024.0f, "kilo"));
1959                 } else {
1960                         txt.set_text (string_compose (msg, removed, _("file was"), session->path() + "dead_sounds", (float) rep.space / 1024.0f, "kilo"));
1961                 }
1962         } else {
1963                 if (removed > 1) {
1964                         txt.set_text (string_compose (msg, removed, _("files were"), session->path() + "dead_sounds", (float) rep.space / 1048576.0f, "mega"));
1965                 } else {
1966                         txt.set_text (string_compose (msg, removed, _("file was"), session->path() + "dead_sounds", (float) rep.space / 1048576.0f, "mega"));
1967                 }
1968         }
1969
1970         dhbox.pack_start (*dimage, true, false, 5);
1971         dhbox.pack_start (txt, true, false, 5);
1972
1973         for (vector<string>::iterator i = rep.paths.begin(); i != rep.paths.end(); ++i) {
1974                 TreeModel::Row row = *(results_model->append());
1975                 row[results_columns.visible_name] = *i;
1976                 row[results_columns.fullpath] = *i;
1977         }
1978         
1979         list_scroller.add (results_display);
1980         list_scroller.set_size_request (-1, 150);
1981         list_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
1982
1983         dvbox.pack_start (dhbox, true, false, 5);
1984         dvbox.pack_start (list_scroller, true, false, 5);
1985         ddhbox.pack_start (dvbox, true, false, 5);
1986
1987         results.get_vbox()->pack_start (ddhbox, true, false, 5);
1988         results.add_button (Stock::CLOSE, RESPONSE_CLOSE);
1989         results.set_default_response (RESPONSE_CLOSE);
1990         results.set_position (Gtk::WIN_POS_MOUSE);
1991         results.show_all_children ();
1992         results.set_resizable (false);
1993
1994         results.run ();
1995
1996 }
1997
1998 void
1999 ARDOUR_UI::cleanup ()
2000 {
2001         if (session == 0) {
2002                 /* shouldn't happen: menu item is insensitive */
2003                 return;
2004         }
2005
2006
2007         MessageDialog  checker (_("Are you sure you want to cleanup?"),
2008                                 true,
2009                                 Gtk::MESSAGE_QUESTION,
2010                                 (Gtk::ButtonsType)(Gtk::BUTTONS_NONE));
2011
2012         checker.set_secondary_text(_("Cleanup is a destructive operation.\n\
2013 ALL undo/redo information will be lost if you cleanup.\n\
2014 After cleanup, unused audio files will be moved to a \
2015 \"dead sounds\" location."));
2016         
2017         checker.add_button (Stock::CANCEL, RESPONSE_CANCEL);
2018         checker.add_button (_("Clean Up"), RESPONSE_ACCEPT);
2019         checker.set_default_response (RESPONSE_CANCEL);
2020
2021         checker.set_name (_("CleanupDialog"));
2022         checker.set_wmclass (_("ardour_cleanup"), "Ardour");
2023         checker.set_position (Gtk::WIN_POS_MOUSE);
2024
2025         switch (checker.run()) {
2026         case RESPONSE_ACCEPT:
2027                 break;
2028         default:
2029                 return;
2030         }
2031
2032         Session::cleanup_report rep;
2033
2034         editor->prepare_for_cleanup ();
2035
2036         if (session->cleanup_sources (rep)) {
2037                 return;
2038         }
2039         checker.hide();
2040         display_cleanup_results (rep, 
2041                                  _("cleaned files"),
2042                                  _("\
2043 The following %1 %2 not in use and \n\
2044 have been moved to:\n\
2045 %3. \n\n\
2046 Flushing the wastebasket will \n\
2047 release an additional\n\
2048 %4 %5bytes of disk space.\n"
2049                                          ));
2050 }
2051
2052 void
2053 ARDOUR_UI::flush_trash ()
2054 {
2055         if (session == 0) {
2056                 /* shouldn't happen: menu item is insensitive */
2057                 return;
2058         }
2059
2060         Session::cleanup_report rep;
2061
2062         if (session->cleanup_trash_sources (rep)) {
2063                 return;
2064         }
2065
2066         display_cleanup_results (rep, 
2067                                  _("deleted file"),
2068                                  _("The following %1 %2 deleted from\n\
2069 %3,\n\
2070 releasing %4 %5bytes of disk space"));
2071 }
2072
2073 void
2074 ARDOUR_UI::add_route ()
2075 {
2076         int count;
2077
2078         if (!session) {
2079                 return;
2080         }
2081
2082         if (add_route_dialog == 0) {
2083                 add_route_dialog = new AddRouteDialog;
2084                 editor->ensure_float (*add_route_dialog);
2085         }
2086
2087         if (add_route_dialog->is_visible()) {
2088                 /* we're already doing this */
2089                 return;
2090         }
2091
2092         ResponseType r = (ResponseType) add_route_dialog->run ();
2093         
2094         add_route_dialog->hide();
2095
2096         switch (r) {
2097         case RESPONSE_ACCEPT:
2098                 break;
2099         default:
2100                 return;
2101                 break;
2102         }
2103
2104         if ((count = add_route_dialog->count()) <= 0) {
2105                 return;
2106         }
2107
2108         uint32_t input_chan = add_route_dialog->channels ();
2109         uint32_t output_chan;
2110         string name_template = add_route_dialog->name_template ();
2111         bool track = add_route_dialog->track ();
2112
2113         AutoConnectOption oac = Config->get_output_auto_connect();
2114
2115         if (oac & AutoConnectMaster) {
2116                 output_chan = (session->master_out() ? session->master_out()->n_inputs() : input_chan);
2117         } else {
2118                 output_chan = input_chan;
2119         }
2120
2121         /* XXX do something with name template */
2122
2123         if (track) {
2124                 session_add_audio_track (input_chan, output_chan, add_route_dialog->mode(), count);
2125         } else {
2126                 session_add_audio_bus (input_chan, output_chan, count);
2127         }
2128 }
2129
2130 XMLNode*
2131 ARDOUR_UI::mixer_settings () const
2132 {
2133         XMLNode* node = 0;
2134
2135         if (session) {
2136                 node = session->instant_xml(X_("Mixer"), session->path());
2137         } else {
2138                 node = Config->instant_xml(X_("Mixer"), get_user_ardour_path());
2139         }
2140
2141         if (!node) {
2142                 node = new XMLNode (X_("Mixer"));
2143         }
2144
2145         return node;
2146 }
2147
2148 XMLNode*
2149 ARDOUR_UI::editor_settings () const
2150 {
2151         XMLNode* node = 0;
2152
2153         if (session) {
2154                 node = session->instant_xml(X_("Editor"), session->path());
2155         } else {
2156                 node = Config->instant_xml(X_("Editor"), get_user_ardour_path());
2157         }
2158
2159         if (!node) {
2160                 node = new XMLNode (X_("Editor"));
2161         }
2162         return node;
2163 }
2164
2165 XMLNode*
2166 ARDOUR_UI::keyboard_settings () const
2167 {
2168         XMLNode* node = 0;
2169
2170         node = Config->extra_xml(X_("Keyboard"));
2171         
2172         if (!node) {
2173                 node = new XMLNode (X_("Keyboard"));
2174         }
2175         return node;
2176 }
2177
2178 void
2179 ARDOUR_UI::halt_on_xrun_message ()
2180 {
2181         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::halt_on_xrun_message));
2182
2183         MessageDialog msg (*editor,
2184                            _("Recording was stopped because your system could not keep up."));
2185         msg.run ();
2186 }
2187
2188 void
2189 ARDOUR_UI::disk_overrun_handler ()
2190 {
2191         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::disk_underrun_handler));
2192
2193         if (!have_disk_overrun_displayed) {
2194                 have_disk_overrun_displayed = true;
2195                 MessageDialog msg (*editor, X_("diskrate dialog"), _("\
2196 The disk system on your computer\n\
2197 was not able to keep up with Ardour.\n\
2198 \n\
2199 Specifically, it failed to write data to disk\n\
2200 quickly enough to keep up with recording.\n"));
2201                 msg.run ();
2202                 have_disk_overrun_displayed = false;
2203         }
2204 }
2205
2206 void
2207 ARDOUR_UI::disk_underrun_handler ()
2208 {
2209         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::disk_underrun_handler));
2210
2211         if (!have_disk_underrun_displayed) {
2212                 have_disk_underrun_displayed = true;
2213                 MessageDialog msg (*editor,
2214                         (_("The disk system on your computer\n\
2215 was not able to keep up with Ardour.\n\
2216 \n\
2217 Specifically, it failed to read data from disk\n\
2218 quickly enough to keep up with playback.\n")));
2219                 msg.run ();
2220                 have_disk_underrun_displayed = false;
2221         } 
2222 }
2223
2224 void
2225 ARDOUR_UI::disk_underrun_message_gone ()
2226 {
2227         have_disk_underrun_displayed = false;
2228 }
2229
2230 void
2231 ARDOUR_UI::disk_overrun_message_gone ()
2232 {
2233         have_disk_underrun_displayed = false;
2234 }
2235
2236 int
2237 ARDOUR_UI::pending_state_dialog ()
2238 {
2239         ArdourDialog dialog ("pending state dialog");
2240         Label  message (_("\
2241 This session appears to have been in\n\
2242 middle of recording when ardour or\n\
2243 the computer was shutdown.\n\
2244 \n\
2245 Ardour can recover any captured audio for\n\
2246 you, or it can ignore it. Please decide\n\
2247 what you would like to do.\n"));
2248
2249         dialog.get_vbox()->pack_start (message);
2250         dialog.add_button (_("Recover from crash"), RESPONSE_ACCEPT);
2251         dialog.add_button (_("Ignore crash data"), RESPONSE_REJECT);
2252
2253         dialog.set_position (WIN_POS_CENTER);
2254         dialog.show_all ();
2255         
2256         switch (dialog.run ()) {
2257         case RESPONSE_ACCEPT:
2258                 return 1;
2259         default:
2260                 return 0;
2261         }
2262 }
2263         
2264 void
2265 ARDOUR_UI::disconnect_from_jack ()
2266 {
2267         if (engine) {
2268                 if( engine->disconnect_from_jack ()) {
2269                         MessageDialog msg (*editor, _("Could not disconnect from JACK"));
2270                         msg.run ();
2271                 }
2272
2273                 update_sample_rate (0);
2274         }
2275 }
2276
2277 void
2278 ARDOUR_UI::reconnect_to_jack ()
2279 {
2280         if (engine) {
2281                 if (engine->reconnect_to_jack ()) {
2282                         MessageDialog msg (*editor,  _("Could not reconnect to JACK"));
2283                         msg.run ();
2284                 }
2285
2286                 update_sample_rate (0);
2287         }
2288 }
2289
2290 void
2291 ARDOUR_UI::set_jack_buffer_size (nframes_t nframes)
2292 {
2293         engine->request_buffer_size (nframes);
2294         update_sample_rate (0);
2295 }
2296
2297 int
2298 ARDOUR_UI::cmdline_new_session (string path)
2299 {
2300         if (path[0] != '/') {
2301                 char buf[PATH_MAX+1];
2302                 string str;
2303
2304                 getcwd (buf, sizeof (buf));
2305                 str = buf;
2306                 str += '/';
2307                 str += path;
2308                 path = str;
2309         }
2310
2311         new_session (false, path);
2312
2313         _will_create_new_session_automatically = false; /* done it */
2314         return FALSE; /* don't call it again */
2315 }
2316
2317 void
2318 ARDOUR_UI::use_config ()
2319 {
2320         Glib::RefPtr<Action> act;
2321
2322         switch (Config->get_native_file_data_format ()) {
2323         case FormatFloat:
2324                 act = ActionManager::get_action (X_("options"), X_("FileDataFormatFloat"));
2325                 break;
2326         case FormatInt24:
2327                 act = ActionManager::get_action (X_("options"), X_("FileDataFormat24bit"));
2328                 break;
2329         }
2330
2331         if (act) {
2332                 Glib::RefPtr<RadioAction> ract = Glib::RefPtr<RadioAction>::cast_dynamic(act);
2333                 ract->set_active ();
2334         }       
2335
2336         switch (Config->get_native_file_header_format ()) {
2337         case BWF:
2338                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatBWF"));
2339                 break;
2340         case WAVE:
2341                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatWAVE"));
2342                 break;
2343         case WAVE64:
2344                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatWAVE64"));
2345                 break;
2346         case iXML:
2347                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatiXML"));
2348                 break;
2349         case RF64:
2350                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatRF64"));
2351                 break;
2352         case CAF:
2353                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatCAF"));
2354                 break;
2355         case AIFF:
2356                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatAIFF"));
2357                 break;
2358         }
2359
2360         if (act) {
2361                 Glib::RefPtr<RadioAction> ract = Glib::RefPtr<RadioAction>::cast_dynamic(act);
2362                 ract->set_active ();
2363         }       
2364 }