adjusting region fade in/out lengths makes the fade in/out active; new font sizes...
[ardour.git] / gtk2_ardour / ardour_ui.cc
index bfe2c145e6e619cd8961f74cc5941df7df98c093..ee110c435aa82c927c500f71257e6d8232e4724b 100644 (file)
@@ -33,7 +33,9 @@
 #include <gtkmm/accelmap.h>
 
 #include <pbd/error.h>
+#include <pbd/basename.h>
 #include <pbd/compose.h>
+#include <pbd/misc.h>
 #include <pbd/pathscanner.h>
 #include <pbd/failed_constructor.h>
 #include <pbd/enumwriter.h>
@@ -73,6 +75,7 @@
 #include "add_route_dialog.h"
 #include "new_session_dialog.h"
 #include "about.h"
+#include "splash.h"
 #include "utils.h"
 #include "gui_thread.h"
 #include "theme_manager.h"
@@ -97,7 +100,7 @@ sigc::signal<void,nframes_t, bool, nframes_t> ARDOUR_UI::Clock;
 ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
        : Gtkmm2ext::UI (X_("Ardour"), argcp, argvp),
-         
+
          primary_clock (X_("primary"), false, X_("TransportClockDisplay"), true, false, true),
          secondary_clock (X_("secondary"), false, X_("SecondaryClockDisplay"), true, false, true),
          preroll_clock (X_("preroll"), false, X_("PreRollClock"), true, true),
@@ -114,7 +117,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
          /* big clock */
 
-         big_clock (X_("bigclock"), false, "BigClockNonRecording", false, false, true),
+         big_clock (X_("bigclock"), false, "BigClockNonRecording", true, false, true),
 
          /* transport */
 
@@ -148,13 +151,28 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
          auditioning_alert_button (_("AUDITION")),
          solo_alert_button (_("SOLO")),
-         shown_flag (false)
+         shown_flag (false),
+         error_log_button (_("Errors"))
 {
        using namespace Gtk::Menu_Helpers;
 
        Gtkmm2ext::init();
+
+#ifdef TOP_MENUBAR
+       _auto_display_errors = false;
+#endif
+
+       if (getenv ("ARDOUR_DEBUG_UPDATES")) {
+               gdk_window_set_debug_updates (true);
+       }
        
        about = 0;
+       splash = 0;
+
+       if (ARDOUR_COMMAND_LINE::session_name.length()) {       
+               /* only show this if we're not going to post the new session dialog */
+               show_splash ();
+       }
 
        if (theArdourUI == 0) {
                theArdourUI = this;
@@ -163,6 +181,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
        ui_config = new UIConfiguration();
        theme_manager = new ThemeManager();
 
+       engine = 0;
        editor = 0;
        mixer = 0;
        session = 0;
@@ -176,6 +195,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
        route_params = 0;
        option_editor = 0;
        location_ui = 0;
+       key_editor = 0;
        open_session_selector = 0;
        have_configure_timeout = false;
        have_disk_speed_dialog_displayed = false;
@@ -211,10 +231,17 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
        ARDOUR::Session::AskAboutPendingState.connect (mem_fun(*this, &ARDOUR_UI::pending_state_dialog));
 
+       /* handle sr mismatch with a dialog */
+
+       ARDOUR::Session::AskAboutSampleRateMismatch.connect (mem_fun(*this, &ARDOUR_UI::sr_mismatch_dialog));
+
        /* lets get this party started */
 
        try {
-               ARDOUR::init (ARDOUR_COMMAND_LINE::use_vst, ARDOUR_COMMAND_LINE::try_hw_optimization);
+               if (ARDOUR::init (ARDOUR_COMMAND_LINE::use_vst, ARDOUR_COMMAND_LINE::try_hw_optimization)) {
+                       throw failed_constructor ();
+               }
+
                setup_gtk_ardour_enums ();
                Config->set_current_owner (ConfigVariableBase::Interface);
                setup_profile ();
@@ -222,7 +249,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
        } catch (failed_constructor& err) {
                error << _("could not initialize Ardour.") << endmsg;
                // pass it on up
-               throw err;
+               throw;
        } 
 
        /* we like keyboards */
@@ -231,33 +258,27 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
        starting.connect (mem_fun(*this, &ARDOUR_UI::startup));
        stopping.connect (mem_fun(*this, &ARDOUR_UI::shutdown));
-}
 
-gint
-ARDOUR_UI::start_backend_audio ()
-{
-       if (new_session_dialog->engine_control.start_engine ()) {
-               return -1;
-       } 
-
-       return 0;
+       platform_setup ();
 }
 
-void
+int
 ARDOUR_UI::create_engine ()
 {
        // this gets called every time by new_session()
 
        if (engine) {
-               return;
+               return 0;
        }
 
+       loading_message (_("Starting audio engine"));
+
        try { 
                engine = new ARDOUR::AudioEngine (ARDOUR_COMMAND_LINE::jack_client_name);
-       } catch (AudioEngine::NoBackendAvailable& err) {
-               backend_audio_error ();
-               error << string_compose (_("Could not connect to JACK server as  \"%1\""), ARDOUR_COMMAND_LINE::jack_client_name) <<  endmsg;
-               quit ();
+
+       } catch (...) {
+
+               return -1;
        }
 
        engine->Stopped.connect (mem_fun(*this, &ARDOUR_UI::engine_stopped));
@@ -266,6 +287,8 @@ ARDOUR_UI::create_engine ()
        engine->SampleRateChanged.connect (mem_fun(*this, &ARDOUR_UI::update_sample_rate));
 
        post_engine ();
+
+       return 0;
 }
 
 void
@@ -320,13 +343,18 @@ ARDOUR_UI::post_engine ()
 
        /* start the time-of-day-clock */
        
+#ifndef GTKOSX
+       /* OS X provides an always visible wallclock, so don't be stupid */
        update_wall_clock ();
        Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::update_wall_clock), 60000);
+#endif
 
        update_disk_space ();
        update_cpu_load ();
        update_sample_rate (engine->frame_rate());
 
+       platform_specific ();
+
        /* now start and maybe save state */
 
        if (do_engine_start () == 0) {
@@ -364,6 +392,15 @@ ARDOUR_UI::~ARDOUR_UI ()
        }
 }
 
+void
+ARDOUR_UI::pop_back_splash ()
+{
+       if (Splash::instance()) {
+               // Splash::instance()->pop_back();
+               Splash::instance()->hide ();
+       }
+}
+
 gint
 ARDOUR_UI::configure_timeout ()
 {
@@ -399,7 +436,7 @@ ARDOUR_UI::configure_handler (GdkEventConfigure* conf)
                Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::configure_timeout), 100);
                have_configure_timeout = true;
        }
-               
+       
        return FALSE;
 }
 
@@ -474,7 +511,13 @@ ARDOUR_UI::save_ardour_state ()
        XMLNode* node = new XMLNode (keyboard->get_state());
        Config->add_extra_xml (*node);
        Config->add_extra_xml (get_transport_controllable_state());
+       if (new_session_dialog) {
+               if (new_session_dialog->engine_control.was_used()) {
+                       Config->add_extra_xml (new_session_dialog->engine_control.get_state());
+               }
+       }
        Config->save_state();
+       ui_config->save_state ();
 
        XMLNode enode(static_cast<Stateful*>(editor)->get_state());
        XMLNode mnode(mixer->get_state());
@@ -524,29 +567,52 @@ ARDOUR_UI::update_autosave ()
 }
 
 void
-ARDOUR_UI::backend_audio_error ()
+ARDOUR_UI::backend_audio_error (bool we_set_params, Gtk::Window* toplevel)
 {
-       MessageDialog win (_("Ardour could not connect to JACK."),
-                    false,
-                    Gtk::MESSAGE_INFO,
-                    (Gtk::ButtonsType)(Gtk::BUTTONS_NONE));
-win.set_secondary_text(_("There are several possible reasons:\n\
+       string title;
+       if (we_set_params) {
+               title = _("Ardour could not start JACK");
+       } else {
+               title = _("Ardour could not connect to JACK.");
+       }
+
+       MessageDialog win (title,
+                          false,
+                          Gtk::MESSAGE_INFO,
+                          Gtk::BUTTONS_NONE);
+       
+       if (we_set_params) {
+               win.set_secondary_text(_("There are several possible reasons:\n\
+\n\
+1) You requested audio parameters that are not supported..\n\
+2) JACK is running as another user.\n\
+\n\
+Please consider the possibilities, and perhaps try different parameters."));
+       } else {
+               win.set_secondary_text(_("There are several possible reasons:\n\
 \n\
 1) JACK is not running.\n\
 2) JACK is running as another user, perhaps root.\n\
 3) There is already another client called \"ardour\".\n\
 \n\
 Please consider the possibilities, and perhaps (re)start JACK."));
+       }
+
+       if (toplevel) {
+               win.set_transient_for (*toplevel);
+       }
+
+       if (we_set_params) {
+               win.add_button (Stock::OK, RESPONSE_CLOSE);
+       } else {
+               win.add_button (Stock::QUIT, RESPONSE_CLOSE);
+       }
 
-       win.add_button (Stock::QUIT, RESPONSE_CLOSE);
        win.set_default_response (RESPONSE_CLOSE);
        
        win.show_all ();
        win.set_position (Gtk::WIN_POS_CENTER);
-
-       if (!ARDOUR_COMMAND_LINE::no_splash) {
-               hide_splash ();
-       }
+       pop_back_splash ();
 
        /* we just don't care about the result, but we want to block */
 
@@ -556,83 +622,21 @@ Please consider the possibilities, and perhaps (re)start JACK."));
 void
 ARDOUR_UI::startup ()
 {
-       using namespace ARDOUR_COMMAND_LINE;
        string name, path;
-       bool isnew;
 
        new_session_dialog = new NewSessionDialog();
 
-       /* If no session name is given: we're not loading a session yet, nor creating a new one */
-
-       if (session_name.length()) {
+       bool backend_audio_is_running = EngineControl::engine_running();
+       XMLNode* audio_setup = Config->extra_xml ("AudioSetup");
        
-               /* Load session or start the new session dialog */
-               
-               if (Session::find_session (session_name, path, name, isnew)) {
-                       error << string_compose(_("could not load command line session \"%1\""), session_name) << endmsg;
-                       return;
-               }
-
-               if (!ARDOUR_COMMAND_LINE::new_session) {
-                       
-                       /* Supposed to be loading an existing session, but the session doesn't exist */
-                       
-                       if (isnew) {
-                               error << string_compose (_("\n\nNo session named \"%1\" exists.\n"
-                                                          "To create it from the command line, start ardour as \"ardour --new %1"), path) 
-                                     << endmsg;
-                               return;
-                       }
-               }
-               
-               new_session_dialog->set_session_name (name);
-               new_session_dialog->set_session_folder (Glib::path_get_basename (path));
-               _session_is_new = isnew;
-       }
-
-       hide_splash ();
-
-       bool have_backend = EngineControl::engine_running();
-       bool need_nsd;
-       bool load_needed = false;
-
-       if (have_backend) {
-
-               /* backend audio is working */
-
-               if (session_name.empty() || ARDOUR_COMMAND_LINE::new_session) {
-                       /* need NSD to get session name and other info */
-                       need_nsd = true;
-               } else {
-                       need_nsd = false;
-               }
-               
-       } else {
-               
-               /* no backend audio, must bring up NSD to check configuration */
-               
-               need_nsd = true;
-       }
-
-       if (need_nsd) {
-
-               if (!new_session (session_name,have_backend)) {
-                       return;
-               }
-
-       } else {
-
-               load_needed = true;
+       if (audio_setup) {
+               new_session_dialog->engine_control.set_state (*audio_setup);
        }
        
-       create_engine ();
-
-       if (load_needed) {
-               if (load_session (session_name, name)) {
-                       return;
-               }
+       if (!get_session_parameters (backend_audio_is_running, ARDOUR_COMMAND_LINE::new_session)) {
+               return;
        }
-
+       
        show ();
 }
 
@@ -689,8 +693,9 @@ ARDOUR_UI::check_memory_locking ()
                                hbox.pack_start (cb, true, false);
                                vbox->pack_start (hbox);
                                hbox.show_all ();
+
+                               pop_back_splash ();
                                
-                               editor->ensure_float (msg);
                                msg.run ();
                        }
                }
@@ -702,35 +707,42 @@ ARDOUR_UI::check_memory_locking ()
 void
 ARDOUR_UI::finish()
 {
-       if (session && session->dirty()) {
-               switch (ask_about_saving_session(_("quit"))) {
-               case -1:
-                       return;
-                       break;
-               case 1:
-                       /* use the default name */
-                       if (save_state_canfail ("")) {
-                               /* failed - don't quit */
-                               MessageDialog msg (*editor, 
-                                              _("\
+       if (session) {
+
+               if (session->transport_rolling()) {
+                       session->request_stop ();
+                       usleep (2500000);
+               }
+
+               if (session->dirty()) {
+                       switch (ask_about_saving_session(_("quit"))) {
+                       case -1:
+                               return;
+                               break;
+                       case 1:
+                               /* use the default name */
+                               if (save_state_canfail ("")) {
+                                       /* failed - don't quit */
+                                       MessageDialog msg (*editor, 
+                                                          _("\
 Ardour was unable to save your session.\n\n\
 If you still wish to quit, please use the\n\n\
 \"Just quit\" option."));
-                               msg.run ();
-                               return;
+                                       pop_back_splash();
+                                       msg.run ();
+                                       return;
+                               }
+                               break;
+                       case 0:
+                               break;
                        }
-                       break;
-               case 0:
-                       break;
                }
-       }
-
-       if (session) {
+               
                session->set_deletion_in_progress ();
        }
+
        engine->stop (true);
-       Config->save_state();
-       ARDOUR_UI::config()->save_state();
+       save_ardour_state ();
        quit ();
 }
 
@@ -805,7 +817,7 @@ ARDOUR_UI::ask_about_saving_session (const string & what)
        return -1;
 }
        
-gint
+int
 ARDOUR_UI::every_second ()
 {
        update_cpu_load ();
@@ -825,6 +837,8 @@ ARDOUR_UI::every_point_one_seconds ()
 gint
 ARDOUR_UI::every_point_zero_one_seconds ()
 {
+       // august 2007: actual update frequency: 40Hz, not 100Hz
+
        SuperRapidScreenUpdate(); /* EMIT_SIGNAL */
        return TRUE;
 }
@@ -987,6 +1001,13 @@ ARDOUR_UI::redisplay_recent_sessions ()
                        fullpath = fullpath.substr (0, fullpath.length()-1);
                }
 
+               /* check whether session still exists */
+               if (!Glib::file_test(fullpath.c_str(), Glib::FILE_TEST_EXISTS)) {
+                       /* session doesn't exist */
+                       cerr << "skipping non-existent session " << fullpath << endl;
+                       continue;
+               }               
+               
                /* now get available states for this session */
 
                if ((states = Session::possible_states (fullpath)) == 0) {
@@ -1035,8 +1056,7 @@ ARDOUR_UI::build_session_selector ()
        recent_session_display.set_model (recent_session_model);
        recent_session_display.append_column (_("Recent Sessions"), recent_session_columns.visible_name);
        recent_session_display.set_headers_visible (false);
-       recent_session_display.get_selection()->set_mode (SELECTION_SINGLE);
-
+       recent_session_display.get_selection()->set_mode (SELECTION_BROWSE);
        recent_session_display.signal_row_activated().connect (mem_fun (*this, &ARDOUR_UI::recent_session_row_activated));
 
        scroller->add (recent_session_display);
@@ -1057,37 +1077,55 @@ ARDOUR_UI::recent_session_row_activated (const TreePath& path, TreeViewColumn* c
 void
 ARDOUR_UI::open_recent_session ()
 {
-       /* popup selector window */
+       bool can_return = (session != 0);
 
        if (session_selector_window == 0) {
                build_session_selector ();
        }
-
+       
        redisplay_recent_sessions ();
 
-       ResponseType r = (ResponseType) session_selector_window->run ();
+       while (true) {
+               
+               session_selector_window->set_position (WIN_POS_MOUSE);
 
-       session_selector_window->hide();
+               ResponseType r = (ResponseType) session_selector_window->run ();
+               
+               switch (r) {
+               case RESPONSE_ACCEPT:
+                       break;
+               default:
+                       if (can_return) {
+                               session_selector_window->hide();
+                               return;
+                       } else {
+                               exit (1);
+                       }
+               }
 
-       switch (r) {
-       case RESPONSE_ACCEPT:
-               break;
-       default:
-               return;
-       }
+               if (recent_session_display.get_selection()->count_selected_rows() == 0) {
+                       continue;
+               }
+               
+               session_selector_window->hide();
 
-       Gtk::TreeModel::iterator i = recent_session_display.get_selection()->get_selected();
+               Gtk::TreeModel::iterator i = recent_session_display.get_selection()->get_selected();
+               
+               if (i == recent_session_model->children().end()) {
+                       return;
+               }
+               
+               Glib::ustring path = (*i)[recent_session_columns.fullpath];
+               Glib::ustring state = (*i)[recent_session_columns.visible_name];
+               
+               _session_is_new = false;
+               
+               if (load_session (path, state) == 0) {
+                       break;
+               }
 
-       if (i == recent_session_model->children().end()) {
-               return;
+               can_return = false;
        }
-       
-       Glib::ustring path = (*i)[recent_session_columns.fullpath];
-       Glib::ustring state = (*i)[recent_session_columns.visible_name];
-
-       _session_is_new = false;
-
-       load_session (path, state);
 }
 
 bool
@@ -1124,6 +1162,7 @@ ARDOUR_UI::check_audioengine ()
                if (!engine->connected()) {
                        MessageDialog msg (_("Ardour is not connected to JACK\n"
                                             "You cannot open or close sessions in this condition"));
+                       pop_back_splash ();
                        msg.run ();
                        return false;
                }
@@ -1149,6 +1188,7 @@ ARDOUR_UI::open_session ()
                open_session_selector = new Gtk::FileChooserDialog (_("open session"), FILE_CHOOSER_ACTION_OPEN);
                open_session_selector->add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
                open_session_selector->add_button (Gtk::Stock::OPEN, Gtk::RESPONSE_ACCEPT);
+               open_session_selector->set_default_response(Gtk::RESPONSE_ACCEPT);
 
                FileFilter session_filter;
                session_filter.add_pattern ("*.ardour");
@@ -1239,12 +1279,12 @@ ARDOUR_UI::session_add_audio_route (bool track, int32_t input_channels, int32_t
        }
 
        catch (...) {
-               cerr << "About to complain about JACK\n";
                MessageDialog msg (*editor, 
                                   _("There are insufficient JACK ports available\n\
 to create a new track or bus.\n\
 You should save Ardour, exit and\n\
 restart JACK with more ports."));
+               pop_back_splash ();
                msg.run ();
        }
 }
@@ -1355,7 +1395,7 @@ ARDOUR_UI::remove_last_capture()
 }
 
 void
-ARDOUR_UI::transport_record ()
+ARDOUR_UI::transport_record (bool roll)
 {
        if (session) {
                switch (session->record_status()) {
@@ -1366,8 +1406,18 @@ ARDOUR_UI::transport_record ()
                                return;
                        }
                        session->maybe_enable_record ();
+                       if (roll) {
+                               transport_roll ();
+                       }
                        break;
                case Session::Recording:
+                       if (roll) {
+                               session->request_stop();
+                       } else {
+                               session->disable_record (false, true);
+                       }
+                       break;
+
                case Session::Enabled:
                        session->disable_record (false, true);
                }
@@ -1611,6 +1661,7 @@ JACK has either been shutdown or it\n\
 disconnected Ardour because Ardour\n\
 was not fast enough. You can save the\n\
 session and/or try to reconnect to JACK ."));
+       pop_back_splash ();
        msg.run ();
 }
 
@@ -1642,7 +1693,7 @@ void
 ARDOUR_UI::update_clocks ()
 {
        if (!editor || !editor->dragging_playhead()) {
-               Clock (session->audible_frame(), false, editor->edit_cursor_position(false)); /* EMIT_SIGNAL */
+               Clock (session->audible_frame(), false, editor->get_preferred_edit_position()); /* EMIT_SIGNAL */
        }
 }
 
@@ -1827,6 +1878,14 @@ ARDOUR_UI::primary_clock_value_changed ()
        }
 }
 
+void
+ARDOUR_UI::big_clock_value_changed ()
+{
+       if (session) {
+               session->request_locate (big_clock.current_time ());
+       }
+}
+
 void
 ARDOUR_UI::secondary_clock_value_changed ()
 {
@@ -1930,273 +1989,500 @@ ARDOUR_UI::save_template ()
        }
 }
 
+void
+ARDOUR_UI::fontconfig_dialog ()
+{
+#ifdef GTKOSX
+       /* X11 users will always have fontconfig info around, but new GTK-OSX users 
+          may not and it can take a while to build it. Warn them.
+       */
+       
+       Glib::ustring fontconfig = Glib::build_filename (Glib::get_home_dir(), ".fontconfig");
+       
+       if (!Glib::file_test (fontconfig, Glib::FILE_TEST_EXISTS|Glib::FILE_TEST_IS_DIR)) {
+               MessageDialog msg (*new_session_dialog,
+                                  _("Welcome to Ardour.\n\n"
+                                    "The program will take a bit longer to start up\n"
+                                    "while the system fonts are checked.\n\n"
+                                    "This will only be done once, and you will\n"
+                                    "not see this message again\n"),
+                                  true,
+                                  Gtk::MESSAGE_INFO,
+                                  Gtk::BUTTONS_OK);
+               pop_back_splash ();
+               msg.show_all ();
+               msg.present ();
+               msg.run ();
+       }
+#endif
+}
+
+void
+ARDOUR_UI::parse_cmdline_path (const Glib::ustring& cmdline_path, Glib::ustring& session_name, Glib::ustring& session_path, bool& existing_session)
+{
+       existing_session = false;
+
+       if (Glib::file_test (cmdline_path, Glib::FILE_TEST_IS_DIR)) {
+               session_path = cmdline_path;
+               existing_session = true;
+       } else if (Glib::file_test (cmdline_path, Glib::FILE_TEST_IS_REGULAR)) {
+               session_path = Glib::path_get_dirname (string (cmdline_path));
+               existing_session = true;
+       } else {
+               /* it doesn't exist, assume the best */
+               session_path = Glib::path_get_dirname (string (cmdline_path));
+       }
+       
+       session_name = basename_nosuffix (string (cmdline_path));
+}
+
+int
+ARDOUR_UI::load_cmdline_session (const Glib::ustring& session_name, const Glib::ustring& session_path, bool& existing_session)
+{
+       /* when this is called, the backend audio system must be running */
+
+       /* the main idea here is to deal with the fact that a cmdline argument for the session
+          can be interpreted in different ways - it could be a directory or a file, and before
+          we load, we need to know both the session directory and the snapshot (statefile) within it
+          that we are supposed to use.
+       */
+
+       if (session_name.length() == 0 || session_path.length() == 0) {
+               return false;
+       }
+       
+       if (Glib::file_test (session_path, Glib::FILE_TEST_IS_DIR)) {
+
+               Glib::ustring predicted_session_file;
+               
+               predicted_session_file = session_path;
+               predicted_session_file += '/';
+               predicted_session_file += session_name;
+               predicted_session_file += Session::statefile_suffix();
+               
+               if (Glib::file_test (predicted_session_file, Glib::FILE_TEST_EXISTS)) {
+                       existing_session = true;
+               }
+               
+       } else if (Glib::file_test (session_path, Glib::FILE_TEST_EXISTS)) {
+               
+               if (session_path.find (Session::statefile_suffix()) == session_path.length() - 7) {
+                       /* existing .ardour file */
+                       existing_session = true;
+               }
+
+       } else {
+               existing_session = false;
+       }
+       
+       /* lets just try to load it */
+       
+       if (create_engine ()) {
+               backend_audio_error (false, new_session_dialog);
+               return -1;
+       }
+       
+       return load_session (session_path, session_name);
+}
+
 bool
-ARDOUR_UI::new_session (Glib::ustring predetermined_path, bool have_engine)
+ARDOUR_UI::ask_about_loading_existing_session (const Glib::ustring& session_path)
+{
+       Glib::ustring str = string_compose (_("This session\n%1\nalready exists. Do you want to open it?"), session_path);
+       
+       MessageDialog msg (str,
+                          false,
+                          Gtk::MESSAGE_WARNING,
+                          Gtk::BUTTONS_YES_NO,
+                          true);
+       
+       
+       msg.set_name (X_("CleanupDialog"));
+       msg.set_wmclass (X_("existing_session"), "Ardour");
+       msg.set_position (Gtk::WIN_POS_MOUSE);
+       pop_back_splash ();
+
+       switch (msg.run()) {
+       case RESPONSE_YES:
+               return true;
+               break;
+       }
+       return false;
+}
+
+int
+ARDOUR_UI::build_session_from_nsd (const Glib::ustring& session_path, const Glib::ustring& session_name)
+{
+       
+       uint32_t cchns;
+       uint32_t mchns;
+       AutoConnectOption iconnect;
+       AutoConnectOption oconnect;
+       uint32_t nphysin;
+       uint32_t nphysout;
+       
+       if (Profile->get_sae()) {
+               
+               cchns = 0;
+               mchns = 2;
+               iconnect = AutoConnectPhysical;
+               oconnect = AutoConnectMaster;
+               nphysin = 0; // use all available
+               nphysout = 0; // use all available
+               
+       } else {
+               
+               /* get settings from advanced section of NSD */
+               
+               if (new_session_dialog->create_control_bus()) {
+                       cchns = (uint32_t) new_session_dialog->control_channel_count();
+               } else {
+                       cchns = 0;
+               }
+               
+               if (new_session_dialog->create_master_bus()) {
+                       mchns = (uint32_t) new_session_dialog->master_channel_count();
+               } else {
+                       mchns = 0;
+               }
+               
+               if (new_session_dialog->connect_inputs()) {
+                       iconnect = AutoConnectPhysical;
+               } else {
+                       iconnect = AutoConnectOption (0);
+               }
+               
+               /// @todo some minor tweaks.
+               
+               if (new_session_dialog->connect_outs_to_master()) {
+                       oconnect = AutoConnectMaster;
+               } else if (new_session_dialog->connect_outs_to_physical()) {
+                       oconnect = AutoConnectPhysical;
+               } else {
+                       oconnect = AutoConnectOption (0);
+               } 
+               
+               nphysin = (uint32_t) new_session_dialog->input_limit_count();
+               nphysout = (uint32_t) new_session_dialog->output_limit_count();
+       }
+       
+       if (build_session (session_path,
+                          session_name,
+                          cchns,
+                          mchns,
+                          iconnect,
+                          oconnect,
+                          nphysin,
+                          nphysout, 
+                          engine->frame_rate() * 60 * 5)) {
+               
+               return -1;
+       }
+
+       return 0;
+}
+
+void
+ARDOUR_UI::end_loading_messages ()
 {
-       string session_name;
-       string session_path;
+       // hide_splash ();
+}
+
+void
+ARDOUR_UI::loading_message (const std::string& msg)
+{
+       show_splash ();
+       splash->message (msg);
+       flush_pending ();
+}
        
+bool
+ARDOUR_UI::get_session_parameters (bool backend_audio_is_running, bool should_be_new)
+{
+       bool existing_session = false;
+       Glib::ustring session_name;
+       Glib::ustring session_path;
+       Glib::ustring template_name;
+
        int response = Gtk::RESPONSE_NONE;
 
-       new_session_dialog->set_modal(true);
-       new_session_dialog->set_name (predetermined_path);
-       new_session_dialog->reset_recent();
-       new_session_dialog->show();
-       new_session_dialog->set_current_page (0);
+       if (!ARDOUR_COMMAND_LINE::session_name.empty()) {
 
-       do {
+               parse_cmdline_path (ARDOUR_COMMAND_LINE::session_name, session_name, session_path, existing_session);
 
-               new_session_dialog->set_have_engine (have_engine);
+               /* don't ever reuse this */
 
-               response = new_session_dialog->run ();
+               ARDOUR_COMMAND_LINE::session_name = string();
 
-               _session_is_new = false;
+               if (existing_session && backend_audio_is_running) {
+
+                       /* just load the thing already */
+
+                       if (load_cmdline_session (session_name, session_path, existing_session) == 0) {
+                               return true;
+                       }
+               }
+
+               /* make the NSD use whatever information we have */
+
+               new_session_dialog->set_session_name (session_name);
+               new_session_dialog->set_session_folder (session_path);
+       }
+
+       /* loading failed, or we need the NSD for something */
+
+       new_session_dialog->set_modal (false);
+       new_session_dialog->set_position (WIN_POS_CENTER);
+       new_session_dialog->set_current_page (0);
+       new_session_dialog->set_existing_session (existing_session);
+       new_session_dialog->reset_recent();
 
-               if (response == Gtk::RESPONSE_CANCEL || response == Gtk::RESPONSE_DELETE_EVENT) {
+       do {
+               new_session_dialog->set_have_engine (backend_audio_is_running);
+               new_session_dialog->present ();
+               response = new_session_dialog->run ();
+               
+               _session_is_new = false;
+               
+               /* handle possible negative responses */
 
+               switch (response) {
+               case Gtk::RESPONSE_CANCEL:
+               case Gtk::RESPONSE_DELETE_EVENT:
                        if (!session) {
                                quit();
                        }
                        new_session_dialog->hide ();
                        return false;
-
-               } else if (response == Gtk::RESPONSE_NONE) {
-
-                       /* Clear was pressed */
-                       new_session_dialog->reset();
-                       continue;
+                       
+               case Gtk::RESPONSE_NONE:
+                       /* "Clear" was pressed */
+                       goto try_again;
                }
 
-               /* first things first ... we need an audio engine running */
+               fontconfig_dialog();
 
-               if (!have_engine) {
-                       if (start_backend_audio ()) {
+               if (!backend_audio_is_running) {
+                       if (new_session_dialog->engine_control.setup_engine ()) {
                                new_session_dialog->hide ();
                                return false;
-                       }
-                       have_engine = true;
+                       } 
                }
+               
+               if (create_engine ()) {
 
-               create_engine ();
-
-               /* now handle possible affirmative responses */
+                       backend_audio_error (!backend_audio_is_running, new_session_dialog);
+                       flush_pending ();
 
-               if (response == Gtk::RESPONSE_YES) {
+                       new_session_dialog->set_existing_session (false);
+                       new_session_dialog->set_current_page (2);
 
-                       /* YES == OPEN from the open session tab */
+                       response = Gtk::RESPONSE_NONE;
+                       goto try_again;
+               }
 
-                       session_name = new_session_dialog->session_name();
+               backend_audio_is_running = true;                
                        
+               if (response == Gtk::RESPONSE_OK) {
+
+                       session_name = new_session_dialog->session_name();
+
                        if (session_name.empty()) {
                                response = Gtk::RESPONSE_NONE;
-                               continue;
+                               goto try_again;
                        } 
 
+                       /* if the user mistakenly typed path information into the session filename entry,
+                          convert what they typed into a path & a name
+                       */
+                       
                        if (session_name[0] == '/' || 
                            (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
                            (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
-                               load_session (Glib::path_get_dirname (session_name), session_name);
-                       } else {
-                               session_path = new_session_dialog->session_folder();
-                               load_session (session_path, session_name);
-                       }
-                       
-               } else if (response == Gtk::RESPONSE_OK) {
-
-                       /* OK == OPEN from new session tab */
-
-                       session_name = new_session_dialog->session_name();
-                       
-                       if (new_session_dialog->get_current_page() == 1) {
                                
-                               if (session_name.empty()) {
-                                       response = Gtk::RESPONSE_NONE;
-                                       continue;
-                               } 
+                               session_path = Glib::path_get_dirname (session_name);
+                               session_name = Glib::path_get_basename (session_name);
                                
-                               if (session_name[0] == '/' || 
-                                   (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
-                                   (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
-                                       load_session (Glib::path_get_dirname (session_name), session_name);
-                               } else {
-                                       session_path = new_session_dialog->session_folder();
-                                       load_session (session_path, session_name);
-                               }
-                       
                        } else {
 
-                               if (session_name.empty()) {
-                                       response = Gtk::RESPONSE_NONE;
-                                       continue;
-                               } 
-
-                               /* handle what appear to be paths rather than just a name */
-
-                               if (session_name[0] == '/' || 
-                                   (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
-                                   (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
-
-                                       session_path = Glib::path_get_dirname (session_name);
-                                       session_name = Glib::path_get_basename (session_name);
+                               session_path = new_session_dialog->session_folder();
+                       }
 
-                               } else {
+                       template_name = Glib::ustring();                        
+                       switch (new_session_dialog->which_page()) {
 
-                                       session_path = new_session_dialog->session_folder();
+                       case NewSessionDialog::OpenPage: 
+                       case NewSessionDialog::EnginePage:
+                               goto loadit;
+                               break;
 
-                               }
+                       case NewSessionDialog::NewPage: /* nominally the "new" session creator, but could be in use for an old session */
+                               
+                               should_be_new = true;
                                
                                //XXX This is needed because session constructor wants a 
                                //non-existant path. hopefully this will be fixed at some point.
                                
                                session_path = Glib::build_filename (session_path, session_name);
-                                               
+
                                if (Glib::file_test (session_path, Glib::FileTest (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR))) {
 
-                                       Glib::ustring str = string_compose (_("This session\n%1\nalready exists. Do you want to open it?"), session_path);
-
-                                       MessageDialog msg (str,
-                                                          false,
-                                                          Gtk::MESSAGE_WARNING,
-                                                          Gtk::BUTTONS_YES_NO,
-                                                          true);
-
-
-                                       msg.set_name (X_("CleanupDialog"));
-                                       msg.set_wmclass (X_("existing_session"), "Ardour");
-                                       msg.set_position (Gtk::WIN_POS_MOUSE);
-                                       
-                                       switch (msg.run()) {
-                                       case RESPONSE_YES:
-                                               load_session (session_path, session_name);
-                                               goto done;
-                                               break;
-                                       default:
+                                       if (ask_about_loading_existing_session (session_path)) {
+                                               goto loadit;
+                                       } else {
                                                response = RESPONSE_NONE;
-                                               new_session_dialog->reset ();
-                                               continue;
-                                       }
+                                               goto try_again;
+                                       } 
                                }
 
                                _session_is_new = true;
-
-                               std::string template_name = new_session_dialog->session_template_name();
                                                
                                if (new_session_dialog->use_session_template()) {
-                                                       
-                                       load_session (session_path, session_name, &template_name);
+
+                                       template_name = new_session_dialog->session_template_name();
+                                       goto loadit;
                          
                                } else {
-                                                       
-                                       uint32_t cchns;
-                                       uint32_t mchns;
-                                       AutoConnectOption iconnect;
-                                       AutoConnectOption oconnect;
-                                                       
-                                       if (new_session_dialog->create_control_bus()) {
-                                               cchns = (uint32_t) new_session_dialog->control_channel_count();
-                                       } else {
-                                               cchns = 0;
-                                       }
-                                                       
-                                       if (new_session_dialog->create_master_bus()) {
-                                               mchns = (uint32_t) new_session_dialog->master_channel_count();
-                                       } else {
-                                               mchns = 0;
-                                       }
-                                                       
-                                       if (new_session_dialog->connect_inputs()) {
-                                               iconnect = AutoConnectPhysical;
-                                       } else {
-                                               iconnect = AutoConnectOption (0);
-                                       }
-                                                       
-                                       /// @todo some minor tweaks.
-                                                       
-                                       if (new_session_dialog->connect_outs_to_master()) {
-                                               oconnect = AutoConnectMaster;
-                                       } else if (new_session_dialog->connect_outs_to_physical()) {
-                                               oconnect = AutoConnectPhysical;
-                                       } else {
-                                               oconnect = AutoConnectOption (0);
-                                       } 
-                                                       
-                                       uint32_t nphysin = (uint32_t) new_session_dialog->input_limit_count();
-                                       uint32_t nphysout = (uint32_t) new_session_dialog->output_limit_count();
-                                                       
-                                       if (build_session (session_path,
-                                                          session_name,
-                                                          cchns,
-                                                          mchns,
-                                                          iconnect,
-                                                          oconnect,
-                                                          nphysin,
-                                                          nphysout, 
-                                                          engine->frame_rate() * 60 * 5)) {
-
-                                               response = Gtk::RESPONSE_NONE;
-                                               new_session_dialog->reset ();
-                                               continue;
+                                       if (build_session_from_nsd (session_path, session_name)) {
+                                               response = RESPONSE_NONE;
+                                               goto try_again;
                                        }
+                                       goto done;
                                }
+                               break;
+                               
+                       default:
+                               break;
+                       }
+                       
+                 loadit:
+                       new_session_dialog->hide ();
+                       
+                       if (load_session (session_path, session_name, template_name)) {
+                               /* force a retry */
+                               response = Gtk::RESPONSE_NONE;
+                       }
+
+                 try_again:
+                       if (response == Gtk::RESPONSE_NONE) {
+                               new_session_dialog->set_existing_session (false);
+                               new_session_dialog->reset ();
                        }
                }
-               
+
        } while (response == Gtk::RESPONSE_NONE);
 
   done:
        show();
-       new_session_dialog->get_window()->set_cursor();
        new_session_dialog->hide();
+       new_session_dialog->reset();
+       goto_editor_window ();
        return true;
-}
+}      
 
 void
-ARDOUR_UI::close_session()
+ARDOUR_UI::close_session ()
 {
        if (!check_audioengine()) {
                return;
        }
 
-       unload_session();
-       new_session ("", true);
+       unload_session (true);
+       
+       get_session_parameters (true, false);
 }
 
 int
-ARDOUR_UI::load_session (const string & path, const string & snap_name, string* mix_template)
+ARDOUR_UI::load_session (const Glib::ustring& path, const Glib::ustring& snap_name, Glib::ustring mix_template)
 {
        Session *new_session;
-       int x;
+       int unload_status;
+       int retval = -1;
+
        session_loaded = false;
-       
+
        if (!check_audioengine()) {
                return -1;
        }
 
-       x = unload_session ();
+       unload_status = unload_session ();
 
-       if (x < 0) {
-               return -1;
-       } else if (x > 0) {
-               return 0;
+       if (unload_status < 0) {
+               goto out;
+       } else if (unload_status > 0) {
+               retval = 0;
+               goto out;
        }
 
        /* if it already exists, we must have write access */
 
-       if (::access (path.c_str(), F_OK) == 0 && ::access (path.c_str(), W_OK)) {
+       if (Glib::file_test (path.c_str(), Glib::FILE_TEST_EXISTS) && ::access (path.c_str(), W_OK)) {
                MessageDialog msg (*editor, _("You do not have write access to this session.\n"
                                              "This prevents the session from being loaded."));
+               pop_back_splash ();
                msg.run ();
-               return -1;
+               goto out;
        }
 
+       loading_message (_("Please wait while Ardour loads your session"));
+       disable_screen_updates ();
+
        try {
                new_session = new Session (*engine, path, snap_name, mix_template);
        }
 
+       /* this one is special */
+
+       catch (AudioEngine::PortRegistrationFailure& err) {
+
+               MessageDialog msg (err.what(),
+                                  true,
+                                  Gtk::MESSAGE_INFO,
+                                  Gtk::BUTTONS_OK_CANCEL);
+               
+               msg.set_title (_("Loading Error"));
+               msg.set_secondary_text (_("Click the OK button to try again."));
+               msg.set_position (Gtk::WIN_POS_CENTER);
+               pop_back_splash ();
+               msg.present ();
+
+               int response = msg.run ();
+
+               msg.hide ();
+
+               switch (response) {
+               case RESPONSE_CANCEL:
+                       exit (1);
+               default:
+                       break;
+               }
+               goto out;
+       }
+
        catch (...) {
 
-               error << string_compose(_("Session \"%1 (snapshot %2)\" did not load successfully"), path, snap_name) << endmsg;
-               return -1;
+               MessageDialog msg (string_compose(_("Session \"%1 (snapshot %2)\" did not load successfully"), path, snap_name),
+                                  true,
+                                  Gtk::MESSAGE_INFO,
+                                  Gtk::BUTTONS_OK_CANCEL);
+               
+               msg.set_title (_("Loading Error"));
+               msg.set_secondary_text (_("Click the OK button to try again."));
+               msg.set_position (Gtk::WIN_POS_CENTER);
+               pop_back_splash ();
+               msg.present ();
+
+               int response = msg.run ();
+
+               msg.hide ();
+
+               switch (response) {
+               case RESPONSE_CANCEL:
+                       exit (1);
+               default:
+                       break;
+               }
+               goto out;
        }
 
        connect_to_session (new_session);
@@ -2211,12 +2497,16 @@ ARDOUR_UI::load_session (const string & path, const string & snap_name, string*
                session->set_clean ();
        }
 
-       editor->edit_cursor_position (true);
-       return 0;
+       enable_screen_updates ();
+       flush_pending ();
+       retval = 0;
+
+  out:
+       return retval;
 }
 
 int
-ARDOUR_UI::build_session (const string & path, const string & snap_name, 
+ARDOUR_UI::build_session (const Glib::ustring& path, const Glib::ustring& snap_name, 
                          uint32_t control_channels,
                          uint32_t master_channels, 
                          AutoConnectOption input_connect,
@@ -2252,6 +2542,7 @@ ARDOUR_UI::build_session (const string & path, const string & snap_name,
        catch (...) {
 
                MessageDialog msg (string_compose(_("Could not create session in \"%1\""), path));
+               pop_back_splash ();
                msg.run ();
                return -1;
        }
@@ -2277,28 +2568,54 @@ ARDOUR_UI::show ()
 }
 
 void
-ARDOUR_UI::show_splash ()
+ARDOUR_UI::show_about ()
 {
        if (about == 0) {
-               about = new About();
+               about = new About;
                about->signal_response().connect(mem_fun (*this, &ARDOUR_UI::about_signal_response) );
        }
-       about->present();
-       flush_pending ();
+
+       about->show_all ();
+}
+
+void
+ARDOUR_UI::hide_about ()
+{
+       if (about) {
+               about->get_window()->set_cursor ();
+               about->hide ();
+       }
 }
 
 void
 ARDOUR_UI::about_signal_response(int response)
 {
-       hide_splash();
+       hide_about();
+}
+
+void
+ARDOUR_UI::show_splash ()
+{
+       if (splash == 0) {
+               try {
+                       splash = new Splash;
+               } catch (...) {
+                       return;
+               }
+       }
+
+       splash->show ();
+       splash->present ();
+       splash->queue_draw ();
+       splash->get_window()->process_updates (true);
+       flush_pending ();
 }
 
 void
 ARDOUR_UI::hide_splash ()
 {
-       if (about) {
-               about->get_window()->set_cursor ();
-               about->hide();
+       if (splash) {
+               splash->hide();
        }
 }
 
@@ -2649,7 +2966,9 @@ ARDOUR_UI::disk_speed_dialog_gone (int ignored_response, MessageDialog* msg)
 int
 ARDOUR_UI::pending_state_dialog ()
 {
-       ArdourDialog dialog ("pending state dialog");
+       HBox* hbox = new HBox();
+       Image* image = new Image (Stock::DIALOG_QUESTION, ICON_SIZE_DIALOG);
+       ArdourDialog dialog (_("Crash Recovery"), true);
        Label  message (_("\
 This session appears to have been in\n\
 middle of recording when ardour or\n\
@@ -2658,14 +2977,18 @@ the computer was shutdown.\n\
 Ardour can recover any captured audio for\n\
 you, or it can ignore it. Please decide\n\
 what you would like to do.\n"));
-
-       dialog.get_vbox()->pack_start (message);
-       dialog.add_button (_("Recover from crash"), RESPONSE_ACCEPT);
+       image->set_alignment(ALIGN_CENTER, ALIGN_TOP);
+       hbox->pack_start (*image, PACK_EXPAND_WIDGET, 12);
+       hbox->pack_end (message, PACK_EXPAND_PADDING, 12);
+       dialog.get_vbox()->pack_start(*hbox, PACK_EXPAND_PADDING, 6);
        dialog.add_button (_("Ignore crash data"), RESPONSE_REJECT);
-
+       dialog.add_button (_("Recover from crash"), RESPONSE_ACCEPT);
+       dialog.set_default_response (RESPONSE_ACCEPT);
        dialog.set_position (WIN_POS_CENTER);
-       dialog.show_all ();
-       
+       message.show();
+       image->show();
+       hbox->show();
+
        switch (dialog.run ()) {
        case RESPONSE_ACCEPT:
                return 1;
@@ -2673,6 +2996,38 @@ what you would like to do.\n"));
                return 0;
        }
 }
+
+int
+ARDOUR_UI::sr_mismatch_dialog (nframes_t desired, nframes_t actual)
+{
+       HBox* hbox = new HBox();
+       Image* image = new Image (Stock::DIALOG_QUESTION, ICON_SIZE_DIALOG);
+       ArdourDialog dialog (_("Sample Rate Mismatch"), true);
+       Label  message (string_compose (_("\
+This session was created with a sample rate of %1 Hz\n\
+\n\
+The audioengine is currently running at %2 Hz\n"), desired, actual));
+
+       image->set_alignment(ALIGN_CENTER, ALIGN_TOP);
+       hbox->pack_start (*image, PACK_EXPAND_WIDGET, 12);
+       hbox->pack_end (message, PACK_EXPAND_PADDING, 12);
+       dialog.get_vbox()->pack_start(*hbox, PACK_EXPAND_PADDING, 6);
+       dialog.add_button (_("Load session anyway"), RESPONSE_ACCEPT);
+       dialog.add_button (_("Do not load session"), RESPONSE_REJECT);
+       dialog.set_default_response (RESPONSE_ACCEPT);
+       dialog.set_position (WIN_POS_CENTER);
+       message.show();
+       image->show();
+       hbox->show();
+
+       switch (dialog.run ()) {
+       case RESPONSE_ACCEPT:
+               return 0;
+       default:
+               return 1;
+       }
+}
+
        
 void
 ARDOUR_UI::disconnect_from_jack ()
@@ -2700,26 +3055,6 @@ ARDOUR_UI::reconnect_to_jack ()
        }
 }
 
-int
-ARDOUR_UI::cmdline_new_session (string path)
-{
-       if (path[0] != '/') {
-               char buf[PATH_MAX+1];
-               string str;
-
-               getcwd (buf, sizeof (buf));
-               str = buf;
-               str += '/';
-               str += path;
-               path = str;
-       }
-
-       new_session (path);
-
-       _will_create_new_session_automatically = false; /* done it */
-       return FALSE; /* don't call it again */
-}
-
 void
 ARDOUR_UI::use_config ()
 {
@@ -2781,13 +3116,13 @@ void
 ARDOUR_UI::update_transport_clocks (nframes_t pos)
 {
        if (Config->get_primary_clock_delta_edit_cursor()) {
-               primary_clock.set (pos, false, editor->edit_cursor_position(false), 1);
+               primary_clock.set (pos, false, editor->get_preferred_edit_position(), 1);
        } else {
                primary_clock.set (pos, 0, true);
        }
 
        if (Config->get_secondary_clock_delta_edit_cursor()) {
-               secondary_clock.set (pos, false, editor->edit_cursor_position(false), 2);
+               secondary_clock.set (pos, false, editor->get_preferred_edit_position(), 2);
        } else {
                secondary_clock.set (pos);
        }
@@ -2970,10 +3305,7 @@ ARDOUR_UI::setup_profile ()
 
        if (getenv ("ARDOUR_SAE")) {
                Profile->set_sae ();
+               Profile->set_single_package ();
        }
 }
 
-void
-ARDOUR_UI::audioengine_setup ()
-{
-}