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