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 == "1" || button == "Button1") {
  27     *val |= Button1;
  28   } else if (button == "2" || button == "Button2") {
  29     *val |= Button2;
  30   } else if (button == "3" || button == "Button3") {
  31     *val |= Button3;
  32   } else if (button == "4" || button == "Button4") {
  33     *val |= Button4;
  34   } else if (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 OBBindings::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::OBDisplay::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 *OBBindings::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 OBBindings::OBBindings()
 146   : _curpos(&_keytree),
 147     _resetkey(0,0),
 148     _timer(Openbox::instance->timerManager(),
 149            (otk::OBTimeoutHandler)resetChains, this)
 150 {
 151   _timer.setTimeout(5000); // chains reset after 5 seconds
 152
 153 //  setResetKey("C-g"); // set the default reset key
 154 }
 155
 156
 157 OBBindings::~OBBindings()
 158 {
 159   grabKeys(false);
 160   removeAllKeys();
 161   removeAllButtons();
 162   removeAllEvents();
 163 }
 164
 165
 166 void OBBindings::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 *OBBindings::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 OBBindings::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     grabKeys(false);
 247
 248     // assimilate this built tree into the main tree
 249     assimilate(tree); // assimilation destroys/uses the tree
 250
 251     grabKeys(true);
 252   }
 253
 254   Py_INCREF(callback);
 255
 256   return true;
 257 }
 258
 259
 260 bool OBBindings::removeKey(const StringVect &keylist, PyObject *callback)
 261 {
 262   assert(false); // XXX: function not implemented yet
 263
 264   KeyBindingTree *tree;
 265   bool conflict;
 266
 267   if (!(tree = buildtree(keylist, 0)))
 268     return false; // invalid binding requested
 269
 270   KeyBindingTree *t = find(tree, &conflict);
 271   if (t) {
 272     CallbackList::iterator it = std::find(t->callbacks.begin(),
 273                                           t->callbacks.end(),
 274                                           callback);
 275     if (it != t->callbacks.end()) {
 276       grabKeys(false);
 277
 278       _curpos = &_keytree;
 279
 280       // XXX do shit here ...
 281       Py_XDECREF(*it);
 282
 283       grabKeys(true);
 284       return true;
 285     }
 286   }
 287   return false;
 288 }
 289
 290
 291 void OBBindings::setResetKey(const std::string &key)
 292 {
 293   Binding b(0, 0);
 294   if (translate(key, b)) {
 295     grabKeys(false);
 296     _resetkey.key = b.key;
 297     _resetkey.modifiers = b.modifiers;
 298     grabKeys(true);
 299   }
 300 }
 301
 302
 303 static void remove_branch(KeyBindingTree *first)
 304 {
 305   KeyBindingTree *p = first;
 306
 307   while (p) {
 308     if (p->first_child)
 309       remove_branch(p->first_child);
 310     KeyBindingTree *s = p->next_sibling;
 311     while(!p->callbacks.empty()) {
 312       Py_XDECREF(p->callbacks.front());
 313       p->callbacks.pop_front();
 314     }
 315     delete p;
 316     p = s;
 317   }
 318 }
 319
 320
 321 void OBBindings::removeAllKeys()
 322 {
 323   grabKeys(false);
 324   if (_keytree.first_child) {
 325     remove_branch(_keytree.first_child);
 326     _keytree.first_child = 0;
 327   }
 328   grabKeys(true);
 329 }
 330
 331
 332 void OBBindings::grabKeys(bool grab)
 333 {
 334   for (int i = 0; i < Openbox::instance->screenCount(); ++i) {
 335     Window root = otk::OBDisplay::screenInfo(i)->rootWindow();
 336
 337     KeyBindingTree *p = _curpos->first_child;
 338     while (p) {
 339       if (grab) {
 340         otk::OBDisplay::grabKey(p->binding.key, p->binding.modifiers,
 341                                 root, false, GrabModeAsync, GrabModeAsync,
 342                                 false);
 343       }
 344       else
 345         otk::OBDisplay::ungrabKey(p->binding.key, p->binding.modifiers,
 346                                   root);
 347       p = p->next_sibling;
 348     }
 349
 350     if (_resetkey.key)
 351       if (grab)
 352         otk::OBDisplay::grabKey(_resetkey.key, _resetkey.modifiers,
 353                                 root, false, GrabModeAsync, GrabModeAsync,
 354                                 false);
 355       else
 356         otk::OBDisplay::ungrabKey(_resetkey.key, _resetkey.modifiers,
 357                                   root);
 358   }
 359 }
 360
 361
 362 void OBBindings::fireKey(int screen, unsigned int modifiers, unsigned int key,
 363                          Time time)
 364 {
 365   if (key == _resetkey.key && modifiers == _resetkey.modifiers) {
 366     resetChains(this);
 367   } else {
 368     KeyBindingTree *p = _curpos->first_child;
 369     while (p) {
 370       if (p->binding.key == key && p->binding.modifiers == modifiers) {
 371         if (p->chain) {
 372           _timer.start(); // start/restart the timer
 373           grabKeys(false);
 374           _curpos = p;
 375           grabKeys(true);
 376         } else {
 377           Window win = None;
 378           OBClient *c = Openbox::instance->focusedClient();
 379           if (c) win = c->window();
 380           KeyData *data = new_key_data(screen, win, time, modifiers, key);
 381           CallbackList::iterator it, end = p->callbacks.end();
 382           for (it = p->callbacks.begin(); it != end; ++it)
 383             python_callback(*it, (PyObject*)data);
 384           Py_XDECREF((PyObject*)data);
 385           resetChains(this);
 386         }
 387         break;
 388       }
 389       p = p->next_sibling;
 390     }
 391   }
 392 }
 393
 394 void OBBindings::resetChains(OBBindings *self)
 395 {
 396   self->_timer.stop();
 397   self->grabKeys(false);
 398   self->_curpos = &self->_keytree;
 399   self->grabKeys(true);
 400 }
 401
 402
 403 bool OBBindings::addButton(const std::string &but, MouseContext context,
 404                            MouseAction action, PyObject *callback)
 405 {
 406   assert(context >= 0 && context < NUM_MOUSE_CONTEXT);
 407
 408   Binding b(0,0);
 409   if (!translate(but, b, false))
 410     return false;
 411
 412   ButtonBindingList::iterator it, end = _buttons[context].end();
 413
 414   // look for a duplicate binding
 415   for (it = _buttons[context].begin(); it != end; ++it)
 416     if ((*it)->binding.key == b.key &&
 417         (*it)->binding.modifiers == b.modifiers) {
 418       break;
 419     }
 420
 421   ButtonBinding *bind;
 422
 423   // the binding didnt exist yet, add it
 424   if (it == end) {
 425     bind = new ButtonBinding();
 426     bind->binding.key = b.key;
 427     bind->binding.modifiers = b.modifiers;
 428     _buttons[context].push_back(bind);
 429     // grab the button on all clients
 430     for (int sn = 0; sn < Openbox::instance->screenCount(); ++sn) {
 431       OBScreen *s = Openbox::instance->screen(sn);
 432       OBClient::List::iterator c_it, c_end = s->clients.end();
 433       for (c_it = s->clients.begin(); c_it != c_end; ++c_it) {
 434         grabButton(true, bind->binding, context, *c_it);
 435       }
 436     }
 437   } else
 438     bind = *it;
 439   bind->callbacks[action].push_back(callback);
 440   Py_INCREF(callback);
 441   return true;
 442 }
 443
 444 void OBBindings::removeAllButtons()
 445 {
 446   for (int i = i; i < NUM_MOUSE_CONTEXT; ++i) {
 447     ButtonBindingList::iterator it, end = _buttons[i].end();
 448     for (it = _buttons[i].begin(); it != end; ++it) {
 449       for (int a = 0; a < NUM_MOUSE_ACTION; ++a) {
 450         while (!(*it)->callbacks[a].empty()) {
 451           Py_XDECREF((*it)->callbacks[a].front());
 452           (*it)->callbacks[a].pop_front();
 453         }
 454       }
 455       // ungrab the button on all clients
 456       for (int sn = 0; sn < Openbox::instance->screenCount(); ++sn) {
 457         OBScreen *s = Openbox::instance->screen(sn);
 458         OBClient::List::iterator c_it, c_end = s->clients.end();
 459         for (c_it = s->clients.begin(); c_it != c_end; ++c_it) {
 460           grabButton(false, (*it)->binding, (MouseContext)i, *c_it);
 461         }
 462       }
 463     }
 464   }
 465 }
 466
 467 void OBBindings::grabButton(bool grab, const Binding &b, MouseContext context,
 468                             OBClient *client)
 469 {
 470   Window win;
 471   int mode = GrabModeAsync;
 472   switch(context) {
 473   case MC_Frame:
 474     win = client->frame->window();
 475     break;
 476   case MC_Window:
 477     win = client->frame->plate();
 478     mode = GrabModeSync; // this is handled in fireButton
 479     break;
 480   default:
 481     // any other elements already get button events, don't grab on them
 482     return;
 483   }
 484   if (grab)
 485     otk::OBDisplay::grabButton(b.key, b.modifiers, win, false,
 486                                ButtonPressMask | ButtonMotionMask |
 487                                ButtonReleaseMask, mode, GrabModeAsync,
 488                                None, None, false);
 489   else
 490     otk::OBDisplay::ungrabButton(b.key, b.modifiers, win);
 491 }
 492
 493 void OBBindings::grabButtons(bool grab, OBClient *client)
 494 {
 495   for (int i = 0; i < NUM_MOUSE_CONTEXT; ++i) {
 496     ButtonBindingList::iterator it, end = _buttons[i].end();
 497     for (it = _buttons[i].begin(); it != end; ++it)
 498       grabButton(grab, (*it)->binding, (MouseContext)i, client);
 499   }
 500 }
 501
 502 void OBBindings::fireButton(ButtonData *data)
 503 {
 504   if (data->context == MC_Window) {
 505     // these are grabbed in Sync mode to allow the press to be normal to the
 506     // client
 507     XAllowEvents(otk::OBDisplay::display, ReplayPointer, data->time);
 508   }
 509
 510   ButtonBindingList::iterator it, end = _buttons[data->context].end();
 511   for (it = _buttons[data->context].begin(); it != end; ++it)
 512     if ((*it)->binding.key == data->button &&
 513         (*it)->binding.modifiers == data->state) {
 514       CallbackList::iterator c_it,c_end = (*it)->callbacks[data->action].end();
 515       for (c_it = (*it)->callbacks[data->action].begin();
 516            c_it != c_end; ++c_it)
 517         python_callback(*c_it, (PyObject*)data);
 518     }
 519 }
 520
 521
 522 bool OBBindings::addEvent(EventAction action, PyObject *callback)
 523 {
 524   if (action < 0 || action >= NUM_EVENTS) {
 525     return false;
 526   }
 527
 528   _eventlist[action].push_back(callback);
 529   Py_INCREF(callback);
 530   return true;
 531 }
 532
 533 bool OBBindings::removeEvent(EventAction action, PyObject *callback)
 534 {
 535   if (action < 0 || action >= NUM_EVENTS) {
 536     return false;
 537   }
 538
 539   CallbackList::iterator it = std::find(_eventlist[action].begin(),
 540                                         _eventlist[action].end(),
 541                                         callback);
 542   if (it != _eventlist[action].end()) {
 543     Py_XDECREF(*it);
 544     _eventlist[action].erase(it);
 545     return true;
 546   }
 547   return false;
 548 }
 549
 550 void OBBindings::removeAllEvents()
 551 {
 552   for (int i = 0; i < NUM_EVENTS; ++i) {
 553     while (!_eventlist[i].empty()) {
 554       Py_XDECREF(_eventlist[i].front());
 555       _eventlist[i].pop_front();
 556     }
 557   }
 558 }
 559
 560 void OBBindings::fireEvent(EventData *data)
 561 {
 562   CallbackList::iterator c_it, c_end = _eventlist[data->action].end();
 563   for (c_it = _eventlist[data->action].begin(); c_it != c_end; ++c_it)
 564     python_callback(*c_it, (PyObject*)data);
 565 }
 566
 567 }