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