src/tools/dcpomatic.cc

   1 /*
   2     Copyright (C) 2012-2013 Carl Hetherington <cth@carlh.net>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <iostream>
  21 #include <fstream>
  22 #include <boost/filesystem.hpp>
  23 #ifdef __WXMSW__
  24 #include <shellapi.h>
  25 #endif
  26 #ifdef __WXOSX__
  27 #include <ApplicationServices/ApplicationServices.h>
  28 #endif
  29 #include <wx/generic/aboutdlgg.h>
  30 #include <wx/stdpaths.h>
  31 #include <wx/cmdline.h>
  32 #include "wx/film_viewer.h"
  33 #include "wx/film_editor.h"
  34 #include "wx/job_manager_view.h"
  35 #include "wx/config_dialog.h"
  36 #include "wx/job_wrapper.h"
  37 #include "wx/wx_util.h"
  38 #include "wx/new_film_dialog.h"
  39 #include "wx/properties_dialog.h"
  40 #include "wx/wx_ui_signaller.h"
  41 #include "wx/about_dialog.h"
  42 #include "wx/kdm_dialog.h"
  43 #include "wx/servers_list_dialog.h"
  44 #include "wx/hints_dialog.h"
  45 #include "lib/film.h"
  46 #include "lib/config.h"
  47 #include "lib/util.h"
  48 #include "lib/version.h"
  49 #include "lib/ui_signaller.h"
  50 #include "lib/log.h"
  51 #include "lib/job_manager.h"
  52 #include "lib/transcode_job.h"
  53 #include "lib/exceptions.h"
  54 #include "lib/cinema.h"
  55 #include "lib/kdm.h"
  56
  57 using std::cout;
  58 using std::string;
  59 using std::wstring;
  60 using std::stringstream;
  61 using std::map;
  62 using std::make_pair;
  63 using std::list;
  64 using std::exception;
  65 using std::ofstream;
  66 using boost::shared_ptr;
  67 using boost::dynamic_pointer_cast;
  68
  69 static FilmEditor* film_editor = 0;
  70 static FilmViewer* film_viewer = 0;
  71 static shared_ptr<Film> film;
  72 static std::string log_level;
  73 static std::string film_to_load;
  74 static std::string film_to_create;
  75 static wxMenu* jobs_menu = 0;
  76
  77 static void set_menu_sensitivity ();
  78
  79 class FilmChangedDialog
  80 {
  81 public:
  82         FilmChangedDialog ()
  83         {
  84                 _dialog = new wxMessageDialog (
  85                         0,
  86                         wxString::Format (_("Save changes to film \"%s\" before closing?"), std_to_wx (film->name ()).data()),
  87                         _("Film changed"),
  88                         wxYES_NO | wxYES_DEFAULT | wxICON_QUESTION
  89                         );
  90         }
  91
  92         ~FilmChangedDialog ()
  93         {
  94                 _dialog->Destroy ();
  95         }
  96
  97         int run ()
  98         {
  99                 return _dialog->ShowModal ();
 100         }
 101
 102 private:
 103         /* Not defined */
 104         FilmChangedDialog (FilmChangedDialog const &);
 105
 106         wxMessageDialog* _dialog;
 107 };
 108
 109
 110 void
 111 maybe_save_then_delete_film ()
 112 {
 113         if (!film) {
 114                 return;
 115         }
 116
 117         if (film->dirty ()) {
 118                 FilmChangedDialog d;
 119                 switch (d.run ()) {
 120                 case wxID_NO:
 121                         break;
 122                 case wxID_YES:
 123                         film->write_metadata ();
 124                         break;
 125                 }
 126         }
 127
 128         film.reset ();
 129 }
 130
 131 #define ALWAYS                  0x0
 132 #define NEEDS_FILM              0x1
 133 #define NOT_DURING_DCP_CREATION 0x2
 134 #define NEEDS_DCP               0x4
 135
 136 map<wxMenuItem*, int> menu_items;
 137
 138 void
 139 add_item (wxMenu* menu, wxString text, int id, int sens)
 140 {
 141         wxMenuItem* item = menu->Append (id, text);
 142         menu_items.insert (make_pair (item, sens));
 143 }
 144
 145 void
 146 set_menu_sensitivity ()
 147 {
 148         list<shared_ptr<Job> > jobs = JobManager::instance()->get ();
 149         list<shared_ptr<Job> >::iterator i = jobs.begin();
 150         while (i != jobs.end() && dynamic_pointer_cast<TranscodeJob> (*i) == 0) {
 151                 ++i;
 152         }
 153         bool const dcp_creation = (i != jobs.end ()) && !(*i)->finished ();
 154         bool const have_dcp = film && !film->dcps().empty ();
 155
 156         for (map<wxMenuItem*, int>::iterator j = menu_items.begin(); j != menu_items.end(); ++j) {
 157
 158                 bool enabled = true;
 159
 160                 if ((j->second & NEEDS_FILM) && film == 0) {
 161                         enabled = false;
 162                 }
 163
 164                 if ((j->second & NOT_DURING_DCP_CREATION) && dcp_creation) {
 165                         enabled = false;
 166                 }
 167
 168                 if ((j->second & NEEDS_DCP) && !have_dcp) {
 169                         enabled = false;
 170                 }
 171
 172                 j->first->Enable (enabled);
 173         }
 174 }
 175
 176 enum {
 177         ID_file_new = 1,
 178         ID_file_open,
 179         ID_file_save,
 180         ID_file_properties,
 181         ID_jobs_make_dcp,
 182         ID_jobs_make_kdms,
 183         ID_jobs_send_dcp_to_tms,
 184         ID_jobs_show_dcp,
 185         ID_tools_hints,
 186         ID_tools_encoding_servers,
 187 };
 188
 189 void
 190 setup_menu (wxMenuBar* m)
 191 {
 192         wxMenu* file = new wxMenu;
 193         add_item (file, _("New..."), ID_file_new, ALWAYS);
 194         add_item (file, _("&Open..."), ID_file_open, ALWAYS);
 195         file->AppendSeparator ();
 196         add_item (file, _("&Save"), ID_file_save, NEEDS_FILM);
 197         file->AppendSeparator ();
 198         add_item (file, _("&Properties..."), ID_file_properties, NEEDS_FILM);
 199 #ifndef __WXOSX__
 200         file->AppendSeparator ();
 201 #endif
 202
 203 #ifdef __WXOSX__
 204         add_item (file, _("&Exit"), wxID_EXIT, ALWAYS);
 205 #else
 206         add_item (file, _("&Quit"), wxID_EXIT, ALWAYS);
 207 #endif
 208
 209
 210 #ifdef __WXOSX__
 211         add_item (file, _("&Preferences..."), wxID_PREFERENCES, ALWAYS);
 212 #else
 213         wxMenu* edit = new wxMenu;
 214         add_item (edit, _("&Preferences..."), wxID_PREFERENCES, ALWAYS);
 215 #endif
 216
 217         jobs_menu = new wxMenu;
 218         add_item (jobs_menu, _("&Make DCP"), ID_jobs_make_dcp, NEEDS_FILM | NOT_DURING_DCP_CREATION);
 219         add_item (jobs_menu, _("Make &KDMs..."), ID_jobs_make_kdms, NEEDS_FILM | NEEDS_DCP);
 220         add_item (jobs_menu, _("&Send DCP to TMS"), ID_jobs_send_dcp_to_tms, NEEDS_FILM | NOT_DURING_DCP_CREATION | NEEDS_DCP);
 221         add_item (jobs_menu, _("S&how DCP"), ID_jobs_show_dcp, NEEDS_FILM | NOT_DURING_DCP_CREATION | NEEDS_DCP);
 222
 223         wxMenu* tools = new wxMenu;
 224         add_item (tools, _("Hints..."), ID_tools_hints, 0);
 225         add_item (tools, _("Encoding Servers..."), ID_tools_encoding_servers, 0);
 226
 227         wxMenu* help = new wxMenu;
 228 #ifdef __WXOSX__
 229         add_item (help, _("About DCP-o-matic"), wxID_ABOUT, ALWAYS);
 230 #else
 231         add_item (help, _("About"), wxID_ABOUT, ALWAYS);
 232 #endif
 233
 234         m->Append (file, _("&File"));
 235 #ifndef __WXOSX__
 236         m->Append (edit, _("&Edit"));
 237 #endif
 238         m->Append (jobs_menu, _("&Jobs"));
 239         m->Append (tools, _("&Tools"));
 240         m->Append (help, _("&Help"));
 241 }
 242
 243 class Frame : public wxFrame
 244 {
 245 public:
 246         Frame (wxString const & title)
 247                 : wxFrame (NULL, -1, title)
 248                 , _servers_list_dialog (0)
 249         {
 250                 wxMenuBar* bar = new wxMenuBar;
 251                 setup_menu (bar);
 252                 SetMenuBar (bar);
 253
 254                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::file_new, this),               ID_file_new);
 255                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::file_open, this),              ID_file_open);
 256                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::file_save, this),              ID_file_save);
 257                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::file_properties, this),        ID_file_properties);
 258                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::file_exit, this),              wxID_EXIT);
 259                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::edit_preferences, this),       wxID_PREFERENCES);
 260                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::jobs_make_dcp, this),          ID_jobs_make_dcp);
 261                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::jobs_make_kdms, this),         ID_jobs_make_kdms);
 262                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::jobs_send_dcp_to_tms, this),   ID_jobs_send_dcp_to_tms);
 263                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::jobs_show_dcp, this),          ID_jobs_show_dcp);
 264                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::tools_hints, this),            ID_tools_hints);
 265                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::tools_encoding_servers, this), ID_tools_encoding_servers);
 266                 Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&Frame::help_about, this),             wxID_ABOUT);
 267
 268                 Bind (wxEVT_CLOSE_WINDOW, boost::bind (&Frame::close, this, _1));
 269
 270                 /* Use a panel as the only child of the Frame so that we avoid
 271                    the dark-grey background on Windows.
 272                 */
 273                 wxPanel* overall_panel = new wxPanel (this, wxID_ANY);
 274
 275                 film_editor = new FilmEditor (film, overall_panel);
 276                 film_viewer = new FilmViewer (film, overall_panel);
 277                 JobManagerView* job_manager_view = new JobManagerView (overall_panel, static_cast<JobManagerView::Buttons> (0));
 278
 279                 wxBoxSizer* right_sizer = new wxBoxSizer (wxVERTICAL);
 280                 right_sizer->Add (film_viewer, 2, wxEXPAND | wxALL, 6);
 281                 right_sizer->Add (job_manager_view, 1, wxEXPAND | wxALL, 6);
 282
 283                 wxBoxSizer* main_sizer = new wxBoxSizer (wxHORIZONTAL);
 284                 main_sizer->Add (film_editor, 1, wxEXPAND | wxALL, 6);
 285                 main_sizer->Add (right_sizer, 2, wxEXPAND | wxALL, 6);
 286
 287                 set_menu_sensitivity ();
 288
 289                 film_editor->FileChanged.connect (bind (&Frame::file_changed, this, _1));
 290                 if (film) {
 291                         file_changed (film->directory ());
 292                 } else {
 293                         file_changed ("");
 294                 }
 295
 296                 JobManager::instance()->ActiveJobsChanged.connect (boost::bind (set_menu_sensitivity));
 297
 298                 set_film ();
 299                 overall_panel->SetSizer (main_sizer);
 300         }
 301
 302 private:
 303
 304         void set_film ()
 305         {
 306                 film_viewer->set_film (film);
 307                 film_editor->set_film (film);
 308                 set_menu_sensitivity ();
 309         }
 310
 311         void file_changed (boost::filesystem::path f)
 312         {
 313                 stringstream s;
 314                 s << wx_to_std (_("DCP-o-matic"));
 315                 if (!f.empty ()) {
 316                         s << " - " << f.string ();
 317                 }
 318
 319                 SetTitle (std_to_wx (s.str()));
 320         }
 321
 322         void file_new ()
 323         {
 324                 NewFilmDialog* d = new NewFilmDialog (this);
 325                 int const r = d->ShowModal ();
 326
 327                 if (r == wxID_OK) {
 328
 329                         if (boost::filesystem::is_directory (d->get_path()) && !boost::filesystem::is_empty(d->get_path())) {
 330                                 if (!confirm_dialog (
 331                                             this,
 332                                             std_to_wx (
 333                                                     String::compose (wx_to_std (_("The directory %1 already exists and is not empty.  "
 334                                                                                   "Are you sure you want to use it?")),
 335                                                                      d->get_path().c_str())
 336                                                     )
 337                                             )) {
 338                                         return;
 339                                 }
 340                         } else if (boost::filesystem::is_regular_file (d->get_path())) {
 341                                 error_dialog (
 342                                         this,
 343                                         String::compose (wx_to_std (_("%1 already exists as a file, so you cannot use it for a new film.")), d->get_path().c_str())
 344                                         );
 345                                 return;
 346                         }
 347
 348                         maybe_save_then_delete_film ();
 349                         film.reset (new Film (d->get_path ()));
 350                         film->write_metadata ();
 351                         film->log()->set_level (log_level);
 352                         film->set_name (boost::filesystem::path (d->get_path()).filename().generic_string());
 353                         set_film ();
 354                 }
 355
 356                 d->Destroy ();
 357         }
 358
 359         void file_open ()
 360         {
 361                 wxDirDialog* c = new wxDirDialog (
 362                         this,
 363                         _("Select film to open"),
 364                         std_to_wx (Config::instance()->default_directory_or (wx_to_std (wxStandardPaths::Get().GetDocumentsDir())).string ()),
 365                         wxDEFAULT_DIALOG_STYLE | wxDD_DIR_MUST_EXIST
 366                         );
 367
 368                 int r;
 369                 while (1) {
 370                         r = c->ShowModal ();
 371                         if (r == wxID_OK && c->GetPath() == wxStandardPaths::Get().GetDocumentsDir()) {
 372                                 error_dialog (this, _("You did not select a folder.  Make sure that you select a folder before clicking Open."));
 373                         } else {
 374                                 break;
 375                         }
 376                 }
 377
 378                 if (r == wxID_OK) {
 379                         maybe_save_then_delete_film ();
 380                         try {
 381                                 film.reset (new Film (wx_to_std (c->GetPath ())));
 382                                 film->read_metadata ();
 383                                 film->log()->set_level (log_level);
 384                                 set_film ();
 385                         } catch (std::exception& e) {
 386                                 wxString p = c->GetPath ();
 387                                 wxCharBuffer b = p.ToUTF8 ();
 388                                 error_dialog (this, wxString::Format (_("Could not open film at %s (%s)"), p.data(), std_to_wx (e.what()).data()));
 389                         }
 390                 }
 391
 392                 c->Destroy ();
 393         }
 394
 395         void file_save ()
 396         {
 397                 film->write_metadata ();
 398         }
 399
 400         void file_properties ()
 401         {
 402                 PropertiesDialog* d = new PropertiesDialog (this, film);
 403                 d->ShowModal ();
 404                 d->Destroy ();
 405         }
 406
 407         void file_exit ()
 408         {
 409                 if (!should_close ()) {
 410                         return;
 411                 }
 412
 413                 maybe_save_then_delete_film ();
 414                 Close (true);
 415         }
 416
 417         void edit_preferences ()
 418         {
 419                 ConfigDialog* d = new ConfigDialog (this);
 420                 d->ShowModal ();
 421                 d->Destroy ();
 422                 Config::instance()->write ();
 423         }
 424
 425         void jobs_make_dcp ()
 426         {
 427                 JobWrapper::make_dcp (this, film);
 428         }
 429
 430         void jobs_make_kdms ()
 431         {
 432                 if (!film) {
 433                         return;
 434                 }
 435
 436                 KDMDialog* d = new KDMDialog (this, film);
 437                 if (d->ShowModal () != wxID_OK) {
 438                         d->Destroy ();
 439                         return;
 440                 }
 441
 442                 try {
 443                         if (d->write_to ()) {
 444                                 write_kdm_files (film, d->screens (), d->dcp (), d->from (), d->until (), d->directory ());
 445                         } else {
 446                                 email_kdms (film, d->screens (), d->dcp (), d->from (), d->until ());
 447                         }
 448                 } catch (KDMError& e) {
 449                         error_dialog (this, e.what ());
 450                 }
 451
 452                 d->Destroy ();
 453         }
 454
 455         void jobs_send_dcp_to_tms ()
 456         {
 457                 film->send_dcp_to_tms ();
 458         }
 459
 460         void jobs_show_dcp ()
 461         {
 462 #ifdef __WXMSW__
 463                 string d = film->directory().string ();
 464                 wstring w;
 465                 w.assign (d.begin(), d.end());
 466                 ShellExecute (0, L"open", w.c_str(), 0, 0, SW_SHOWDEFAULT);
 467 #else
 468                 int r = system ("which nautilus");
 469                 if (WEXITSTATUS (r) == 0) {
 470                         r = system (string ("nautilus " + film->directory().string()).c_str ());
 471                         if (WEXITSTATUS (r)) {
 472                                 error_dialog (this, _("Could not show DCP (could not run nautilus)"));
 473                         }
 474                 } else {
 475                         int r = system ("which konqueror");
 476                         if (WEXITSTATUS (r) == 0) {
 477                                 r = system (string ("konqueror " + film->directory().string()).c_str ());
 478                                 if (WEXITSTATUS (r)) {
 479                                         error_dialog (this, _("Could not show DCP (could not run konqueror)"));
 480                                 }
 481                         }
 482                 }
 483 #endif
 484         }
 485
 486         void tools_hints ()
 487         {
 488                 if (!_hints_dialog) {
 489                         _hints_dialog = new HintsDialog (this, film);
 490                 }
 491
 492                 _hints_dialog->Show ();
 493         }
 494
 495         void tools_encoding_servers ()
 496         {
 497                 if (!_servers_list_dialog) {
 498                         _servers_list_dialog = new ServersListDialog (this);
 499                 }
 500
 501                 _servers_list_dialog->Show ();
 502         }
 503
 504         void help_about ()
 505         {
 506                 AboutDialog* d = new AboutDialog (this);
 507                 d->ShowModal ();
 508                 d->Destroy ();
 509         }
 510
 511         bool should_close ()
 512         {
 513                 if (!JobManager::instance()->work_to_do ()) {
 514                         return true;
 515                 }
 516
 517                 wxMessageDialog* d = new wxMessageDialog (
 518                         0,
 519                         _("There are unfinished jobs; are you sure you want to quit?"),
 520                         _("Unfinished jobs"),
 521                         wxYES_NO | wxYES_DEFAULT | wxICON_QUESTION
 522                         );
 523
 524                 bool const r = d->ShowModal() == wxID_YES;
 525                 d->Destroy ();
 526                 return r;
 527         }
 528
 529         void close (wxCloseEvent& ev)
 530         {
 531                 if (!should_close ()) {
 532                         ev.Veto ();
 533                         return;
 534                 }
 535
 536                 ev.Skip ();
 537         }
 538
 539         HintsDialog* _hints_dialog;
 540         ServersListDialog* _servers_list_dialog;
 541 };
 542
 543 static const wxCmdLineEntryDesc command_line_description[] = {
 544         { wxCMD_LINE_OPTION, "l", "log", "set log level (silent, verbose or timing)", wxCMD_LINE_VAL_STRING, wxCMD_LINE_PARAM_OPTIONAL },
 545         { wxCMD_LINE_SWITCH, "n", "new", "create new film", wxCMD_LINE_VAL_NONE, wxCMD_LINE_PARAM_OPTIONAL },
 546         { wxCMD_LINE_PARAM, 0, 0, "film to load or create", wxCMD_LINE_VAL_STRING, wxCMD_LINE_PARAM_MULTIPLE | wxCMD_LINE_PARAM_OPTIONAL },
 547         { wxCMD_LINE_NONE, "", "", "", wxCmdLineParamType (0), 0 }
 548 };
 549
 550 class App : public wxApp
 551 {
 552         bool OnInit ()
 553         try
 554         {
 555                 SetAppName (_("DCP-o-matic"));
 556
 557                 if (!wxApp::OnInit()) {
 558                         return false;
 559                 }
 560
 561 #ifdef DCPOMATIC_LINUX
 562                 unsetenv ("UBUNTU_MENUPROXY");
 563 #endif
 564
 565 #ifdef __WXOSX__
 566                 ProcessSerialNumber serial;
 567                 GetCurrentProcess (&serial);
 568                 TransformProcessType (&serial, kProcessTransformToForegroundApplication);
 569 #endif
 570
 571                 wxInitAllImageHandlers ();
 572
 573                 /* Enable i18n; this will create a Config object
 574                    to look for a force-configured language.  This Config
 575                    object will be wrong, however, because dcpomatic_setup
 576                    hasn't yet been called and there aren't any scalers, filters etc.
 577                    set up yet.
 578                 */
 579                 dcpomatic_setup_i18n ();
 580
 581                 /* Set things up, including scalers / filters etc.
 582                    which will now be internationalised correctly.
 583                 */
 584                 dcpomatic_setup ();
 585
 586                 /* Force the configuration to be re-loaded correctly next
 587                    time it is needed.
 588                 */
 589                 Config::drop ();
 590
 591                 if (!film_to_load.empty() && boost::filesystem::is_directory (film_to_load)) {
 592                         try {
 593                                 film.reset (new Film (film_to_load));
 594                                 film->read_metadata ();
 595                                 film->log()->set_level (log_level);
 596                         } catch (exception& e) {
 597                                 error_dialog (0, std_to_wx (String::compose (wx_to_std (_("Could not load film %1 (%2)")), film_to_load, e.what())));
 598                         }
 599                 }
 600
 601                 if (!film_to_create.empty ()) {
 602                         film.reset (new Film (film_to_create));
 603                         film->write_metadata ();
 604                         film->log()->set_level (log_level);
 605                         film->set_name (boost::filesystem::path (film_to_create).filename().generic_string ());
 606                 }
 607
 608                 Frame* f = new Frame (_("DCP-o-matic"));
 609                 SetTopWindow (f);
 610                 f->Maximize ();
 611                 f->Show ();
 612
 613                 ui_signaller = new wxUISignaller (this);
 614                 this->Bind (wxEVT_IDLE, boost::bind (&App::idle, this));
 615
 616                 return true;
 617         }
 618         catch (exception& e)
 619         {
 620                 error_dialog (0, wxString::Format ("DCP-o-matic could not start: %s", e.what ()));
 621                 return true;
 622         }
 623
 624         void OnInitCmdLine (wxCmdLineParser& parser)
 625         {
 626                 parser.SetDesc (command_line_description);
 627                 parser.SetSwitchChars (wxT ("-"));
 628         }
 629
 630         bool OnCmdLineParsed (wxCmdLineParser& parser)
 631         {
 632                 if (parser.GetParamCount() > 0) {
 633                         if (parser.Found (wxT ("new"))) {
 634                                 film_to_create = wx_to_std (parser.GetParam (0));
 635                         } else {
 636                                 film_to_load = wx_to_std (parser.GetParam(0));
 637                         }
 638                 }
 639
 640                 wxString log;
 641                 if (parser.Found (wxT ("log"), &log)) {
 642                         log_level = wx_to_std (log);
 643                 }
 644
 645                 return true;
 646         }
 647
 648         void idle ()
 649         {
 650                 ui_signaller->ui_idle ();
 651         }
 652 };
 653
 654 IMPLEMENT_APP (App)