Dogcows Code - chaz/openbox/blob - src/openbox.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #include "config.h"
   4
   5 #include "openbox.hh"
   6 #include "client.hh"
   7 #include "screen.hh"
   8 #include "actions.hh"
   9 #include "bindings.hh"
  10 #include "python.hh"
  11 #include "otk/property.hh"
  12 #include "otk/assassin.hh"
  13 #include "otk/property.hh"
  14 #include "otk/util.hh"
  15 #include "otk/rendercolor.hh"
  16 #include "otk/renderstyle.hh"
  17 #include "otk/messagedialog.hh"
  18
  19 extern "C" {
  20 #include <X11/cursorfont.h>
  21
  22 #ifdef    HAVE_SIGNAL_H
  23 #  include <signal.h>
  24 #endif // HAVE_SIGNAL_H
  25
  26 #ifdef    HAVE_FCNTL_H
  27 #  include <fcntl.h>
  28 #endif // HAVE_FCNTL_H
  29
  30 #ifdef    HAVE_SYS_WAIT_H
  31 #  include <sys/wait.h>
  32 #endif // HAVE_SYS_WAIT_H
  33
  34 #include "gettext.h"
  35 #define _(str) gettext(str)
  36 }
  37
  38 #include <algorithm>
  39 #include <cstdio>
  40 #include <cstdlib>
  41
  42 namespace otk {
  43 extern void initialize();
  44 extern void destroy();
  45 }
  46
  47 namespace ob {
  48
  49 Openbox *openbox = (Openbox *) 0;
  50
  51
  52 void Openbox::signalHandler(int signal)
  53 {
  54   switch (signal) {
  55   case SIGUSR1:
  56     printf("Caught SIGUSR1 signal. Restarting.\n");
  57     openbox->restart();
  58     break;
  59
  60   case SIGCHLD:
  61     wait(NULL);
  62     break;
  63
  64   case SIGHUP:
  65   case SIGINT:
  66   case SIGTERM:
  67   case SIGPIPE:
  68     printf("Caught signal %d. Exiting.\n", signal);
  69     openbox->shutdown();
  70     break;
  71
  72   case SIGFPE:
  73   case SIGSEGV:
  74     printf("Caught signal %d. Aborting and dumping core.\n", signal);
  75     abort();
  76   }
  77 }
  78
  79
  80 Openbox::Openbox(int argc, char **argv)
  81   : otk::EventDispatcher(),
  82     otk::EventHandler()
  83 {
  84   struct sigaction action;
  85
  86   _state = State_Starting; // initializing everything
  87
  88   openbox = this;
  89
  90   _argv = argv;
  91   _shutdown = false;
  92   _restart = false;
  93   _rcfilepath = otk::expandTilde("~/.openbox/rc3");
  94   _scriptfilepath = otk::expandTilde("~/.openbox/user.py");
  95   _focused_client = 0;
  96   _sync = false;
  97   _single = false;
  98   _remote = false;
  99
 100   parseCommandLine(argc, argv);
 101
 102   otk::initialize();
 103
 104   XSynchronize(**otk::display, _sync);
 105
 106   // set up the signal handler
 107   action.sa_handler = Openbox::signalHandler;
 108   action.sa_mask = sigset_t();
 109   action.sa_flags = SA_NOCLDSTOP | SA_NODEFER;
 110   sigaction(SIGUSR1, &action, (struct sigaction *) 0);
 111   sigaction(SIGPIPE, &action, (struct sigaction *) 0);
 112   sigaction(SIGSEGV, &action, (struct sigaction *) 0);
 113   sigaction(SIGFPE, &action, (struct sigaction *) 0);
 114   sigaction(SIGTERM, &action, (struct sigaction *) 0);
 115   sigaction(SIGINT, &action, (struct sigaction *) 0);
 116   sigaction(SIGHUP, &action, (struct sigaction *) 0);
 117   sigaction(SIGCHLD, &action, (struct sigaction *) 0);
 118
 119   // anything that died while we were restarting won't give us a SIGCHLD
 120   while (waitpid(-1, NULL, WNOHANG) > 0);
 121
 122   _actions = new Actions();
 123   _bindings = new Bindings();
 124
 125   setMasterHandler(_actions); // set as the master event handler
 126
 127   // create the mouse cursors we'll use
 128   _cursors.session = XCreateFontCursor(**otk::display, XC_left_ptr);
 129   _cursors.move = XCreateFontCursor(**otk::display, XC_fleur);
 130   _cursors.ll_angle = XCreateFontCursor(**otk::display, XC_ll_angle);
 131   _cursors.lr_angle = XCreateFontCursor(**otk::display, XC_lr_angle);
 132   _cursors.ul_angle = XCreateFontCursor(**otk::display, XC_ul_angle);
 133   _cursors.ur_angle = XCreateFontCursor(**otk::display, XC_ur_angle);
 134
 135   // initialize all the screens
 136   _focused_screen = 0;
 137
 138   for (int i = 0, max = ScreenCount(**otk::display); i < max; ++i) {
 139     Screen *screen;
 140     // in single mode skip the screens we don't want to manage
 141     if (_single && i != DefaultScreen(**otk::display)) {
 142       _screens.push_back(0);
 143       continue;
 144     }
 145     // try manage the screen
 146     screen = new Screen(i);
 147     if (screen->managed()) {
 148       _screens.push_back(screen);
 149       if (!_focused_screen) // set this to the first screen managed
 150         _focused_screen = screen;
 151     } else {
 152       delete screen;
 153       _screens.push_back(0);
 154     }
 155   }
 156
 157   if (_screens.empty()) {
 158     printf(_("No screens were found without a window manager. Exiting.\n"));
 159     ::exit(1);
 160   }
 161
 162   assert(_focused_screen);
 163
 164   ScreenList::iterator it, end = _screens.end();
 165
 166   // run the user's script or the system defaults if that fails
 167   bool pyerr, doretry;
 168   do {
 169     // initialize scripting
 170     python_init(argv[0]);
 171
 172     // load all of the screens' configs here so we have a theme set if
 173     // we decide to show the dialog below
 174     for (it = _screens.begin(); it != end; ++it)
 175       (*it)->config().load(); // load the defaults from config.py
 176
 177     pyerr = doretry = false;
 178
 179     // reset all the python stuff
 180     _bindings->removeAllKeys();
 181     _bindings->removeAllButtons();
 182     _bindings->removeAllEvents();
 183
 184     int ret = python_exec(_scriptfilepath.c_str());
 185     if (ret == 2)
 186       pyerr = true;
 187
 188     if (ret) {
 189       // reset all the python stuff
 190       _bindings->removeAllKeys();
 191       _bindings->removeAllButtons();
 192       _bindings->removeAllEvents();
 193
 194       if (python_exec(SCRIPTDIR"/defaults.py")) // system default bahaviors
 195         pyerr = true;
 196     }
 197
 198     if (pyerr) {
 199       std::string msg;
 200       msg += _("An error occured while executing the python scripts.");
 201       msg += "\n\n";
 202       msg += _("See the exact error message in Openbox's output for details.");
 203       otk::MessageDialog dia(this, _("Python Error"), msg);
 204       otk::DialogButton ok(_("Okay"), true);
 205       otk::DialogButton retry(_("Retry"));
 206       dia.addButton(ok);
 207       dia.addButton(retry);
 208       dia.show();
 209       dia.focus();
 210       const otk::DialogButton &res = dia.run();
 211       if (res == retry) {
 212         doretry = true;
 213         python_destroy(); // kill all the python modules so they reinit right
 214       }
 215     }
 216   } while (pyerr && doretry);
 217
 218   for (it = _screens.begin(); it != end; ++it) {
 219     (*it)->config().load(); // load the config as the scripts may change it
 220     (*it)->manageExisting();
 221   }
 222
 223   // grab any keys set up before the screens existed
 224   //_bindings->grabKeys(true);
 225
 226   // set up input focus
 227   setFocusedClient(0);
 228
 229   _state = State_Normal; // done starting
 230 }
 231
 232
 233 Openbox::~Openbox()
 234 {
 235   _state = State_Exiting; // time to kill everything
 236
 237   std::for_each(_screens.begin(), _screens.end(), otk::PointerAssassin());
 238
 239   delete _bindings;
 240   delete _actions;
 241
 242   python_destroy();
 243
 244   XSetInputFocus(**otk::display, PointerRoot, RevertToNone,
 245                  CurrentTime);
 246   XSync(**otk::display, false);
 247
 248   otk::destroy();
 249 }
 250
 251
 252 void Openbox::parseCommandLine(int argc, char **argv)
 253 {
 254   bool err = false;
 255
 256   for (int i = 1; i < argc; ++i) {
 257     std::string arg(argv[i]);
 258
 259     if (arg == "-rc") {
 260       if (++i >= argc)
 261         err = true;
 262       else
 263         _rcfilepath = argv[i];
 264     } else if (arg == "-menu") {
 265       if (++i >= argc)
 266         err = true;
 267       else
 268         _menufilepath = argv[i];
 269     } else if (arg == "-script") {
 270       if (++i >= argc)
 271         err = true;
 272       else
 273         _scriptfilepath = argv[i];
 274     } else if (arg == "-sync") {
 275       _sync = true;
 276     } else if (arg == "-single") {
 277       _single = true;
 278     } else if (arg == "-remote") {
 279       _remote = true;
 280     } else if (arg == "-version") {
 281       showVersion();
 282       ::exit(0);
 283     } else if (arg == "-help") {
 284       showHelp();
 285       ::exit(0);
 286     } else
 287       err = true;
 288
 289     if (err) {
 290       showHelp();
 291       exit(1);
 292     }
 293   }
 294 }
 295
 296
 297 void Openbox::showVersion()
 298 {
 299   printf(_("Openbox - version %s\n"), VERSION);
 300   printf("    (c) 2002 - 2002 Ben Jansens\n\n");
 301 }
 302
 303
 304 void Openbox::showHelp()
 305 {
 306   showVersion(); // show the version string and copyright
 307
 308   // print program usage and command line options
 309   printf(_("Usage: %s [OPTIONS...]\n\
 310   Options:\n\
 311   -remote            optimize for a remote (low bandwidth) connection to the\n\
 312                      display/Xserver.\n\
 313   -single            run on a single screen (default is to run every one).\n\
 314   -rc <string>       use alternate resource file.\n\
 315   -menu <string>     use alternate menu file.\n\
 316   -script <string>   use alternate startup script file.\n\
 317   -sync              run in synchronous mode (for debugging X errors).\n\
 318   -version           display version and exit.\n\
 319   -help              display this help text and exit.\n\n"), _argv[0]);
 320
 321   printf(_("Compile time options:\n\
 322   Debugging: %s\n\
 323   Shape:     %s\n\
 324   Xinerama:  %s\n\
 325   Xkb:       %s\n"),
 326 #ifdef    DEBUG
 327          _("yes"),
 328 #else // !DEBUG
 329          _("no"),
 330 #endif // DEBUG
 331
 332 #ifdef    SHAPE
 333          _("yes"),
 334 #else // !SHAPE
 335          _("no"),
 336 #endif // SHAPE
 337
 338 #ifdef    XINERAMA
 339          _("yes"),
 340 #else // !XINERAMA
 341          _("no"),
 342 #endif // XINERAMA
 343
 344 #ifdef    XKB
 345          _("yes")
 346 #else // !XKB
 347          _("no")
 348 #endif // XKB
 349     );
 350 }
 351
 352
 353 void Openbox::eventLoop()
 354 {
 355   while (true) {
 356     dispatchEvents(false); // from otk::EventDispatcher
 357 //    XFlush(**otk::display); // flush here before we go wait for timers
 358                               // .. the XPending() should have done this last
 359                               // already, it does a flush when it returns 0
 360     // don't wait if we're to shutdown
 361     if (_shutdown) break;
 362     otk::Timer::dispatchTimers(!_sync); // wait if not in sync mode
 363   }
 364 }
 365
 366
 367 void Openbox::addClient(Window window, Client *client)
 368 {
 369   _clients[window] = client;
 370 }
 371
 372
 373 void Openbox::removeClient(Window window)
 374 {
 375   _clients.erase(window);
 376 }
 377
 378
 379 Client *Openbox::findClient(Window window)
 380 {
 381   /*
 382     NOTE: we dont use _clients[] to find the value because that will insert
 383     a new null into the hash, which really sucks when we want to clean up the
 384     hash at shutdown!
 385   */
 386   ClientMap::iterator it = _clients.find(window);
 387   if (it != _clients.end())
 388     return it->second;
 389   else
 390     return (Client*) 0;
 391 }
 392
 393
 394 void Openbox::setFocusedClient(Client *c)
 395 {
 396   // sometimes this is called with the already-focused window, this is
 397   // important for the python scripts to work (eg, c = 0 twice). don't just
 398   // return if _focused_client == c
 399
 400   assert(_focused_screen);
 401
 402   // uninstall the old colormap
 403   if (_focused_client)
 404     _focused_client->installColormap(false);
 405   else
 406     _focused_screen->installColormap(false);
 407
 408   _focused_client = c;
 409   if (c) {
 410     _focused_screen = _screens[c->screen()];
 411
 412     // install the client's colormap
 413     c->installColormap(true);
 414   } else {
 415     XSetInputFocus(**otk::display, _focused_screen->focuswindow(),
 416                    RevertToNone, CurrentTime);
 417
 418     // install the root window colormap
 419     _focused_screen->installColormap(true);
 420   }
 421   // set the NET_ACTIVE_WINDOW hint for all screens
 422   ScreenList::iterator it, end = _screens.end();
 423   for (it = _screens.begin(); it != end; ++it) {
 424     int num = (*it)->number();
 425     Window root = otk::display->screenInfo(num)->rootWindow();
 426     otk::Property::set(root, otk::Property::atoms.net_active_window,
 427                        otk::Property::atoms.window,
 428                        (c && _focused_screen == *it) ? c->window() : None);
 429   }
 430
 431   // call the python Focus callbacks
 432   EventData data(_focused_screen->number(), c, EventAction::Focus, 0);
 433   _bindings->fireEvent(&data);
 434 }
 435
 436 }
 437