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

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef HAVE_CONFIG_H
   4 # include "../config.h"
   5 #endif
   6
   7 #include "bindings.hh"
   8 #include "screen.hh"
   9 #include "openbox.hh"
  10 #include "client.hh"
  11 #include "frame.hh"
  12 #include "python.hh"
  13 #include "otk/display.hh"
  14
  15 extern "C" {
  16 #include <X11/Xlib.h>
  17
  18 #include "gettext.h"
  19 #define _(str) gettext(str)
  20 }
  21
  22 namespace ob {
  23
  24 static bool buttonvalue(const std::string &button, unsigned int *val)
  25 {
  26   if (button == "Left" || button == "1" || button == "Button1") {
  27     *val |= Button1;
  28   } else if (button == "Middle" || button == "2" || button == "Button2") {
  29     *val |= Button2;
  30   } else if (button == "Right" || button == "3" || button == "Button3") {
  31     *val |= Button3;
  32   } else if (button == "Up" || button == "4" || button == "Button4") {
  33     *val |= Button4;
  34   } else if (button == "Down" || button == "5" || button == "Button5") {
  35     *val |= Button5;
  36   } else
  37     return false;
  38   return true;
  39 }
  40
  41 static bool modvalue(const std::string &mod, unsigned int *val)
  42 {
  43   if (mod == "C") {           // control
  44     *val |= ControlMask;
  45   } else if (mod == "S") {    // shift
  46     *val |= ShiftMask;
  47   } else if (mod == "A" ||    // alt/mod1
  48              mod == "M" ||
  49              mod == "Mod1" ||
  50              mod == "M1") {
  51     *val |= Mod1Mask;
  52   } else if (mod == "Mod2" ||   // mod2
  53              mod == "M2") {
  54     *val |= Mod2Mask;
  55   } else if (mod == "Mod3" ||   // mod3
  56              mod == "M3") {
  57     *val |= Mod3Mask;
  58   } else if (mod == "W" ||    // windows/mod4
  59              mod == "Mod4" ||
  60              mod == "M4") {
  61     *val |= Mod4Mask;
  62   } else if (mod == "Mod5" ||   // mod5
  63              mod == "M5") {
  64     *val |= Mod5Mask;
  65   } else {                    // invalid
  66     return false;
  67   }
  68   return true;
  69 }
  70
  71 bool Bindings::translate(const std::string &str, Binding &b,bool askey) const
  72 {
  73   // parse out the base key name
  74   std::string::size_type keybegin = str.find_last_of('-');
  75   keybegin = (keybegin == std::string::npos) ? 0 : keybegin + 1;
  76   std::string key(str, keybegin);
  77
  78   // parse out the requested modifier keys
  79   unsigned int modval = 0;
  80   std::string::size_type begin = 0, end;
  81   while (begin != keybegin) {
  82     end = str.find_first_of('-', begin);
  83
  84     std::string mod(str, begin, end-begin);
  85     if (!modvalue(mod, &modval)) {
  86       printf(_("Invalid modifier element in key binding: %s\n"), mod.c_str());
  87       return false;
  88     }
  89
  90     begin = end + 1;
  91   }
  92
  93   // set the binding
  94   b.modifiers = modval;
  95   if (askey) {
  96     KeySym sym = XStringToKeysym(const_cast<char *>(key.c_str()));
  97     if (sym == NoSymbol) {
  98       printf(_("Invalid Key name in key binding: %s\n"), key.c_str());
  99       return false;
 100     }
 101     if (!(b.key = XKeysymToKeycode(**otk::display, sym)))
 102       printf(_("No valid keycode for Key in key binding: %s\n"), key.c_str());
 103     return b.key != 0;
 104   } else {
 105     return buttonvalue(key, &b.key);
 106   }
 107 }
 108
 109 static void destroytree(KeyBindingTree *tree)
 110 {
 111   while (tree) {
 112     KeyBindingTree *c = tree->first_child;
 113     delete tree;
 114     tree = c;
 115   }
 116 }
 117
 118 KeyBindingTree *Bindings::buildtree(const StringVect &keylist,
 119                                       PyObject *callback) const
 120 {
 121   if (keylist.empty()) return 0; // nothing in the list.. return 0
 122
 123   KeyBindingTree *ret = 0, *p;
 124
 125   StringVect::const_reverse_iterator it, end = keylist.rend();
 126   for (it = keylist.rbegin(); it != end; ++it) {
 127     p = ret;
 128     ret = new KeyBindingTree();
 129     if (!p) {
 130       // this is the first built node, the bottom node of the tree
 131       ret->chain = false;
 132       ret->callbacks.push_back(callback);
 133     }
 134     ret->first_child = p;
 135     if (!translate(*it, ret->binding)) {
 136       destroytree(ret);
 137       ret = 0;
 138       break;
 139     }
 140   }
 141   return ret;
 142 }
 143
 144
 145 Bindings::Bindings()
 146   : _curpos(&_keytree),
 147     _resetkey(0,0),
 148     _timer((otk::Timer *) 0)
 149 {
 150 //  setResetKey("C-g"); // set the default reset key
 151 }
 152
 153
 154 Bindings::~Bindings()
 155 {
 156   if (_timer)
 157     delete _timer;
 158
 159   grabKeys(false);
 160   removeAllKeys();
 161 //  removeAllButtons(); XXX
 162   removeAllEvents();
 163 }
 164
 165
 166 void Bindings::assimilate(KeyBindingTree *node)
 167 {
 168   KeyBindingTree *a, *b, *tmp, *last;
 169
 170   if (!_keytree.first_child) {
 171     // there are no nodes at this level yet
 172     _keytree.first_child = node;
 173   } else {
 174     a = _keytree.first_child;
 175     last = a;
 176     b = node;
 177     while (a) {
 178       last = a;
 179       if (a->binding != b->binding) {
 180         a = a->next_sibling;
 181       } else {
 182         tmp = b;
 183         b = b->first_child;
 184         delete tmp;
 185         a = a->first_child;
 186       }
 187     }
 188     if (last->binding != b->binding)
 189       last->next_sibling = b;
 190     else {
 191       last->first_child = b->first_child;
 192       delete b;
 193     }
 194   }
 195 }
 196
 197
 198 KeyBindingTree *Bindings::find(KeyBindingTree *search,
 199                                  bool *conflict) const {
 200   *conflict = false;
 201   KeyBindingTree *a, *b;
 202   a = _keytree.first_child;
 203   b = search;
 204   while (a && b) {
 205     if (a->binding != b->binding) {
 206       a = a->next_sibling;
 207     } else {
 208       if (a->chain == b->chain) {
 209         if (!a->chain) {
 210           // found it! (return the actual id, not the search's)
 211           return a;
 212         }
 213       } else {
 214         *conflict = true;
 215         return 0; // the chain status' don't match (conflict!)
 216       }
 217       b = b->first_child;
 218       a = a->first_child;
 219     }
 220   }
 221   return 0; // it just isn't in here
 222 }
 223
 224
 225 bool Bindings::addKey(const StringVect &keylist, PyObject *callback)
 226 {
 227   KeyBindingTree *tree, *t;
 228   bool conflict;
 229
 230   if (!(tree = buildtree(keylist, callback)))
 231     return false; // invalid binding requested
 232
 233   t = find(tree, &conflict);
 234   if (conflict) {
 235     // conflicts with another binding
 236     destroytree(tree);
 237     return false;
 238   }
 239
 240   if (t) {
 241     // already bound to something
 242     // XXX: look if callback is already bound to this key?
 243     t->callbacks.push_back(callback);
 244     destroytree(tree);
 245   } else {
 246     // grab the server here to make sure no key pressed go missed
 247     otk::display->grab();
 248     grabKeys(false);
 249
 250     // assimilate this built tree into the main tree
 251     assimilate(tree); // assimilation destroys/uses the tree
 252
 253     grabKeys(true);
 254     otk::display->ungrab();
 255   }
 256
 257   Py_INCREF(callback);
 258
 259   return true;
 260 }
 261
 262
 263 bool Bindings::removeKey(const StringVect &keylist, PyObject *callback)
 264 {
 265   assert(false); // XXX: function not implemented yet
 266
 267   KeyBindingTree *tree;
 268   bool conflict;
 269
 270   if (!(tree = buildtree(keylist, 0)))
 271     return false; // invalid binding requested
 272
 273   KeyBindingTree *t = find(tree, &conflict);
 274   if (t) {
 275     CallbackList::iterator it = std::find(t->callbacks.begin(),
 276                                           t->callbacks.end(),
 277                                           callback);
 278     if (it != t->callbacks.end()) {
 279       // grab the server here to make sure no key pressed go missed
 280       otk::display->grab();
 281       grabKeys(false);
 282
 283       _curpos = &_keytree;
 284
 285       // XXX do shit here ...
 286       Py_XDECREF(*it);
 287
 288       grabKeys(true);
 289       otk::display->ungrab();
 290
 291       return true;
 292     }
 293   }
 294   return false;
 295 }
 296
 297
 298 void Bindings::setResetKey(const std::string &key)
 299 {
 300   Binding b(0, 0);
 301   if (translate(key, b)) {
 302     // grab the server here to make sure no key pressed go missed
 303     otk::display->grab();
 304     grabKeys(false);
 305     _resetkey.key = b.key;
 306     _resetkey.modifiers = b.modifiers;
 307     grabKeys(true);
 308     otk::display->ungrab();
 309   }
 310 }
 311
 312
 313 static void remove_branch(KeyBindingTree *first)
 314 {
 315   KeyBindingTree *p = first;
 316
 317   while (p) {
 318     if (p->first_child)
 319       remove_branch(p->first_child);
 320     KeyBindingTree *s = p->next_sibling;
 321     while(!p->callbacks.empty()) {
 322       Py_XDECREF(p->callbacks.front());
 323       p->callbacks.pop_front();
 324     }
 325     delete p;
 326     p = s;
 327   }
 328 }
 329
 330
 331 void Bindings::removeAllKeys()
 332 {
 333   grabKeys(false);
 334   if (_keytree.first_child) {
 335     remove_branch(_keytree.first_child);
 336     _keytree.first_child = 0;
 337   }
 338   grabKeys(true);
 339 }
 340
 341
 342 void Bindings::grabKeys(bool grab)
 343 {
 344   for (int i = 0; i < openbox->screenCount(); ++i) {
 345     Window root = otk::display->screenInfo(i)->rootWindow();
 346
 347     KeyBindingTree *p = _curpos->first_child;
 348     while (p) {
 349       if (grab) {
 350         otk::display->grabKey(p->binding.key, p->binding.modifiers,
 351                                 root, false, GrabModeAsync, GrabModeAsync,
 352                                 false);
 353       }
 354       else
 355         otk::display->ungrabKey(p->binding.key, p->binding.modifiers,
 356                                   root);
 357       p = p->next_sibling;
 358     }
 359
 360     if (_resetkey.key)
 361       if (grab)
 362         otk::display->grabKey(_resetkey.key, _resetkey.modifiers,
 363                                 root, false, GrabModeAsync, GrabModeAsync,
 364                                 false);
 365       else
 366         otk::display->ungrabKey(_resetkey.key, _resetkey.modifiers,
 367                                   root);
 368   }
 369 }
 370
 371
 372 void Bindings::fireKey(int screen, unsigned int modifiers, unsigned int key,
 373                          Time time)
 374 {
 375   if (key == _resetkey.key && modifiers == _resetkey.modifiers) {
 376     resetChains(this);
 377   } else {
 378     KeyBindingTree *p = _curpos->first_child;
 379     while (p) {
 380       if (p->binding.key == key && p->binding.modifiers == modifiers) {
 381         if (p->chain) {
 382           if (_timer)
 383             delete _timer;
 384           _timer = new otk::Timer(5000, // 5 second timeout
 385                                   (otk::Timer::TimeoutHandler)resetChains,
 386                                   this);
 387           // grab the server here to make sure no key pressed go missed
 388           otk::display->grab();
 389           grabKeys(false);
 390           _curpos = p;
 391           grabKeys(true);
 392           otk::display->ungrab();
 393         } else {
 394           Client *c = openbox->focusedClient();
 395           KeyData data(screen, c, time, modifiers, key);
 396           CallbackList::iterator it, end = p->callbacks.end();
 397           for (it = p->callbacks.begin(); it != end; ++it)
 398             python_callback(*it, &data);
 399           resetChains(this);
 400         }
 401         break;
 402       }
 403       p = p->next_sibling;
 404     }
 405   }
 406 }
 407
 408 void Bindings::resetChains(Bindings *self)
 409 {
 410   if (self->_timer) {
 411     delete self->_timer;
 412     self->_timer = (otk::Timer *) 0;
 413   }
 414   // grab the server here to make sure no key pressed go missed
 415   otk::display->grab();
 416   self->grabKeys(false);
 417   self->_curpos = &self->_keytree;
 418   self->grabKeys(true);
 419   otk::display->ungrab();
 420 }
 421
 422
 423 bool Bindings::addButton(const std::string &but, MouseContext context,
 424                            MouseAction action, PyObject *callback)
 425 {
 426   assert(context >= 0 && context < NUM_MOUSE_CONTEXT);
 427
 428   Binding b(0,0);
 429   if (!translate(but, b, false))
 430     return false;
 431
 432   ButtonBindingList::iterator it, end = _buttons[context].end();
 433
 434   // look for a duplicate binding
 435   for (it = _buttons[context].begin(); it != end; ++it)
 436     if ((*it)->binding.key == b.key &&
 437         (*it)->binding.modifiers == b.modifiers) {
 438       break;
 439     }
 440
 441   ButtonBinding *bind;
 442
 443   // the binding didnt exist yet, add it
 444   if (it == end) {
 445     bind = new ButtonBinding();
 446     bind->binding.key = b.key;
 447     bind->binding.modifiers = b.modifiers;
 448     _buttons[context].push_back(bind);
 449     // grab the button on all clients
 450     for (int sn = 0; sn < openbox->screenCount(); ++sn) {
 451       Screen *s = openbox->screen(sn);
 452       Client::List::iterator c_it, c_end = s->clients.end();
 453       for (c_it = s->clients.begin(); c_it != c_end; ++c_it) {
 454         grabButton(true, bind->binding, context, *c_it);
 455       }
 456     }
 457   } else
 458     bind = *it;
 459   bind->callbacks[action].push_back(callback);
 460   Py_INCREF(callback);
 461   return true;
 462 }
 463
 464 void Bindings::removeAllButtons()
 465 {
 466   for (int i = 0; i < NUM_MOUSE_CONTEXT; ++i) {
 467     ButtonBindingList::iterator it, end = _buttons[i].end();
 468     for (it = _buttons[i].begin(); it != end; ++it) {
 469       for (int a = 0; a < NUM_MOUSE_ACTION; ++a) {
 470         while (!(*it)->callbacks[a].empty()) {
 471           Py_XDECREF((*it)->callbacks[a].front());
 472           (*it)->callbacks[a].pop_front();
 473         }
 474       }
 475       // ungrab the button on all clients
 476       for (int sn = 0; sn < openbox->screenCount(); ++sn) {
 477         Screen *s = openbox->screen(sn);
 478         Client::List::iterator c_it, c_end = s->clients.end();
 479         for (c_it = s->clients.begin(); c_it != c_end; ++c_it) {
 480           grabButton(false, (*it)->binding, (MouseContext)i, *c_it);
 481         }
 482       }
 483     }
 484   }
 485 }
 486
 487 void Bindings::grabButton(bool grab, const Binding &b, MouseContext context,
 488                             Client *client)
 489 {
 490   Window win;
 491   int mode = GrabModeAsync;
 492   unsigned int mask;
 493   switch(context) {
 494   case MC_Frame:
 495     win = client->frame->window();
 496     mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
 497     break;
 498   case MC_Window:
 499     win = client->frame->plate();
 500     mode = GrabModeSync; // this is handled in fireButton
 501     mask = ButtonPressMask; // can't catch more than this with Sync mode
 502                             // the release event is manufactured by the
 503                             // master buttonPressHandler
 504     break;
 505   default:
 506     // any other elements already get button events, don't grab on them
 507     return;
 508   }
 509   if (grab)
 510     otk::display->grabButton(b.key, b.modifiers, win, false, mask, mode,
 511                              GrabModeAsync, None, None, false);
 512   else
 513     otk::display->ungrabButton(b.key, b.modifiers, win);
 514 }
 515
 516 void Bindings::grabButtons(bool grab, Client *client)
 517 {
 518   for (int i = 0; i < NUM_MOUSE_CONTEXT; ++i) {
 519     ButtonBindingList::iterator it, end = _buttons[i].end();
 520     for (it = _buttons[i].begin(); it != end; ++it)
 521       grabButton(grab, (*it)->binding, (MouseContext)i, client);
 522   }
 523 }
 524
 525 void Bindings::fireButton(MouseData *data)
 526 {
 527   if (data->context == MC_Window) {
 528     // Replay the event, so it goes to the client, and ungrab the device.
 529     XAllowEvents(**otk::display, ReplayPointer, data->time);
 530   }
 531
 532   ButtonBindingList::iterator it, end = _buttons[data->context].end();
 533   for (it = _buttons[data->context].begin(); it != end; ++it)
 534     if ((*it)->binding.key == data->button &&
 535         (*it)->binding.modifiers == data->state) {
 536       CallbackList::iterator c_it,c_end = (*it)->callbacks[data->action].end();
 537       for (c_it = (*it)->callbacks[data->action].begin();
 538            c_it != c_end; ++c_it)
 539         python_callback(*c_it, data);
 540     }
 541 }
 542
 543
 544 bool Bindings::addEvent(EventAction action, PyObject *callback)
 545 {
 546   if (action < 0 || action >= NUM_EVENTS) {
 547     return false;
 548   }
 549 #ifdef    XKB
 550   if (action == EventBell && _eventlist[action].empty())
 551     XkbSelectEvents(**otk::display, XkbUseCoreKbd,
 552                     XkbBellNotifyMask, XkbBellNotifyMask);
 553 #endif // XKB
 554   _eventlist[action].push_back(callback);
 555   Py_INCREF(callback);
 556   return true;
 557 }
 558
 559 bool Bindings::removeEvent(EventAction action, PyObject *callback)
 560 {
 561   if (action < 0 || action >= NUM_EVENTS) {
 562     return false;
 563   }
 564
 565   CallbackList::iterator it = std::find(_eventlist[action].begin(),
 566                                         _eventlist[action].end(),
 567                                         callback);
 568   if (it != _eventlist[action].end()) {
 569     Py_XDECREF(*it);
 570     _eventlist[action].erase(it);
 571 #ifdef    XKB
 572     if (action == EventBell && _eventlist[action].empty())
 573       XkbSelectEvents(**otk::display, XkbUseCoreKbd,
 574                       XkbBellNotifyMask, 0);
 575 #endif // XKB
 576     return true;
 577   }
 578   return false;
 579 }
 580
 581 void Bindings::removeAllEvents()
 582 {
 583   for (int i = 0; i < NUM_EVENTS; ++i) {
 584     while (!_eventlist[i].empty()) {
 585       Py_XDECREF(_eventlist[i].front());
 586       _eventlist[i].pop_front();
 587     }
 588   }
 589 }
 590
 591 void Bindings::fireEvent(EventData *data)
 592 {
 593   CallbackList::iterator c_it, c_end = _eventlist[data->action].end();
 594   for (c_it = _eventlist[data->action].begin(); c_it != c_end; ++c_it)
 595     python_callback(*c_it, data);
 596 }
 597
 598 }