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(callback);
 129     if (!p) ret->chain = false; // only the first built node
 130     ret->first_child = p;
 131     if (!translate(*it, ret->binding)) {
 132       destroytree(ret);
 133       ret = 0;
 134       break;
 135     }
 136   }
 137   return ret;
 138 }
 139
 140
 141 OBBindings::OBBindings()
 142   : _curpos(&_keytree),
 143     _resetkey(0,0),
 144     _timer(Openbox::instance->timerManager(),
 145            (otk::OBTimeoutHandler)resetChains, this)
 146 {
 147   _timer.setTimeout(5000); // chains reset after 5 seconds
 148
 149 //  setResetKey("C-g"); // set the default reset key
 150
 151   for (int i = 0; i < NUM_EVENTS; ++i)
 152     _events[i] = 0;
 153 }
 154
 155
 156 OBBindings::~OBBindings()
 157 {
 158   grabKeys(false);
 159   removeAllKeys();
 160   removeAllButtons();
 161   removeAllEvents();
 162 }
 163
 164
 165 void OBBindings::assimilate(KeyBindingTree *node)
 166 {
 167   KeyBindingTree *a, *b, *tmp, *last;
 168
 169   if (!_keytree.first_child) {
 170     // there are no nodes at this level yet
 171     _keytree.first_child = node;
 172   } else {
 173     a = _keytree.first_child;
 174     last = a;
 175     b = node;
 176     while (a) {
 177       last = a;
 178       if (a->binding != b->binding) {
 179         a = a->next_sibling;
 180       } else {
 181         tmp = b;
 182         b = b->first_child;
 183         delete tmp;
 184         a = a->first_child;
 185       }
 186     }
 187     if (last->binding != b->binding)
 188       last->next_sibling = b;
 189     else {
 190       last->first_child = b->first_child;
 191       delete b;
 192     }
 193   }
 194 }
 195
 196
 197 PyObject *OBBindings::find(KeyBindingTree *search, bool *conflict) const {
 198   *conflict = false;
 199   KeyBindingTree *a, *b;
 200   a = _keytree.first_child;
 201   b = search;
 202   while (a && b) {
 203     if (a->binding != b->binding) {
 204       a = a->next_sibling;
 205     } else {
 206       if (a->chain == b->chain) {
 207         if (!a->chain) {
 208           // found it! (return the actual id, not the search's)
 209           return a->callback;
 210         }
 211       } else {
 212         *conflict = true;
 213         return 0; // the chain status' don't match (conflict!)
 214       }
 215       b = b->first_child;
 216       a = a->first_child;
 217     }
 218   }
 219   return 0; // it just isn't in here
 220 }
 221
 222
 223 bool OBBindings::addKey(const StringVect &keylist, PyObject *callback)
 224 {
 225   KeyBindingTree *tree;
 226   bool conflict;
 227
 228   if (!(tree = buildtree(keylist, callback)))
 229     return false; // invalid binding requested
 230
 231   if (find(tree, &conflict) || conflict) {
 232     // conflicts with another binding
 233     destroytree(tree);
 234     return false;
 235   }
 236
 237   grabKeys(false);
 238
 239   // assimilate this built tree into the main tree
 240   assimilate(tree); // assimilation destroys/uses the tree
 241
 242   Py_INCREF(callback);
 243
 244   grabKeys(true);
 245
 246   return true;
 247 }
 248
 249
 250 bool OBBindings::removeKey(const StringVect &keylist)
 251 {
 252   assert(false); // XXX: function not implemented yet
 253
 254   KeyBindingTree *tree;
 255   bool conflict;
 256
 257   if (!(tree = buildtree(keylist, 0)))
 258     return false; // invalid binding requested
 259
 260   PyObject *func = find(tree, &conflict);
 261   if (func) {
 262     grabKeys(false);
 263
 264     _curpos = &_keytree;
 265
 266     // XXX do shit here ...
 267     Py_DECREF(func);
 268
 269     grabKeys(true);
 270     return true;
 271   }
 272   return false;
 273 }
 274
 275
 276 void OBBindings::setResetKey(const std::string &key)
 277 {
 278   Binding b(0, 0);
 279   if (translate(key, b)) {
 280     grabKeys(false);
 281     _resetkey.key = b.key;
 282     _resetkey.modifiers = b.modifiers;
 283     grabKeys(true);
 284   }
 285 }
 286
 287
 288 static void remove_branch(KeyBindingTree *first)
 289 {
 290   KeyBindingTree *p = first;
 291
 292   while (p) {
 293     if (p->first_child)
 294       remove_branch(p->first_child);
 295     KeyBindingTree *s = p->next_sibling;
 296     Py_XDECREF(p->callback);
 297     delete p;
 298     p = s;
 299   }
 300 }
 301
 302
 303 void OBBindings::removeAllKeys()
 304 {
 305   grabKeys(false);
 306   if (_keytree.first_child) {
 307     remove_branch(_keytree.first_child);
 308     _keytree.first_child = 0;
 309   }
 310   grabKeys(true);
 311 }
 312
 313
 314 void OBBindings::grabKeys(bool grab)
 315 {
 316   for (int i = 0; i < Openbox::instance->screenCount(); ++i) {
 317     Window root = otk::OBDisplay::screenInfo(i)->rootWindow();
 318
 319     KeyBindingTree *p = _curpos->first_child;
 320     while (p) {
 321       if (grab) {
 322         otk::OBDisplay::grabKey(p->binding.key, p->binding.modifiers,
 323                                 root, false, GrabModeAsync, GrabModeAsync,
 324                                 false);
 325       }
 326       else
 327         otk::OBDisplay::ungrabKey(p->binding.key, p->binding.modifiers,
 328                                   root);
 329       p = p->next_sibling;
 330     }
 331
 332     if (_resetkey.key)
 333       if (grab)
 334         otk::OBDisplay::grabKey(_resetkey.key, _resetkey.modifiers,
 335                                 root, false, GrabModeAsync, GrabModeAsync,
 336                                 false);
 337       else
 338         otk::OBDisplay::ungrabKey(_resetkey.key, _resetkey.modifiers,
 339                                   root);
 340   }
 341 }
 342
 343
 344 void OBBindings::fireKey(unsigned int modifiers, unsigned int key, Time time)
 345 {
 346   if (key == _resetkey.key && modifiers == _resetkey.modifiers) {
 347     resetChains(this);
 348   } else {
 349     KeyBindingTree *p = _curpos->first_child;
 350     while (p) {
 351       if (p->binding.key == key && p->binding.modifiers == modifiers) {
 352         if (p->chain) {
 353           _timer.start(); // start/restart the timer
 354           grabKeys(false);
 355           _curpos = p;
 356           grabKeys(true);
 357         } else {
 358           Window win = None;
 359           OBClient *c = Openbox::instance->focusedClient();
 360           if (c) win = c->window();
 361           KeyData *data = new_key_data(win, time, modifiers, key);
 362           python_callback(p->callback, (PyObject*)data);
 363           Py_DECREF((PyObject*)data);
 364           resetChains(this);
 365         }
 366         break;
 367       }
 368       p = p->next_sibling;
 369     }
 370   }
 371 }
 372
 373 void OBBindings::resetChains(OBBindings *self)
 374 {
 375   self->_timer.stop();
 376   self->grabKeys(false);
 377   self->_curpos = &self->_keytree;
 378   self->grabKeys(true);
 379 }
 380
 381
 382 bool OBBindings::addButton(const std::string &but, MouseContext context,
 383                            MouseAction action, PyObject *callback)
 384 {
 385   assert(context >= 0 && context < NUM_MOUSE_CONTEXT);
 386
 387   Binding b(0,0);
 388   if (!translate(but, b, false))
 389     return false;
 390
 391   ButtonBindingList::iterator it, end = _buttons[context].end();
 392
 393   // look for a duplicate binding
 394   for (it = _buttons[context].begin(); it != end; ++it)
 395     if ((*it)->binding.key == b.key &&
 396         (*it)->binding.modifiers == b.modifiers) {
 397       if ((*it)->callback[action] == callback)
 398         return true; // already bound
 399       break;
 400     }
 401
 402   ButtonBinding *bind;
 403
 404   // the binding didnt exist yet, add it
 405   if (it == end) {
 406     bind = new ButtonBinding();
 407     bind->binding.key = b.key;
 408     bind->binding.modifiers = b.modifiers;
 409     _buttons[context].push_back(bind);
 410     // grab the button on all clients
 411     for (int sn = 0; sn < Openbox::instance->screenCount(); ++sn) {
 412       OBScreen *s = Openbox::instance->screen(sn);
 413       OBClient::List::iterator c_it, c_end = s->clients.end();
 414       for (c_it = s->clients.begin(); c_it != c_end; ++c_it) {
 415         grabButton(true, bind->binding, context, *c_it);
 416       }
 417     }
 418   } else
 419     bind = *it;
 420   Py_XDECREF(bind->callback[action]); // if it was already bound, unbind it
 421   bind->callback[action] = callback;
 422   Py_INCREF(callback);
 423   return true;
 424 }
 425
 426 void OBBindings::removeAllButtons()
 427 {
 428   for (int i = i; i < NUM_MOUSE_CONTEXT; ++i) {
 429     ButtonBindingList::iterator it, end = _buttons[i].end();
 430     for (it = _buttons[i].begin(); it != end; ++it) {
 431       for (int a = 0; a < NUM_MOUSE_ACTION; ++a) {
 432         Py_XDECREF((*it)->callback[a]);
 433         (*it)->callback[a] = 0;
 434       }
 435       // ungrab the button on all clients
 436       for (int sn = 0; sn < Openbox::instance->screenCount(); ++sn) {
 437         OBScreen *s = Openbox::instance->screen(sn);
 438         OBClient::List::iterator c_it, c_end = s->clients.end();
 439         for (c_it = s->clients.begin(); c_it != c_end; ++c_it) {
 440           grabButton(false, (*it)->binding, (MouseContext)i, *c_it);
 441         }
 442       }
 443     }
 444   }
 445 }
 446
 447 void OBBindings::grabButton(bool grab, const Binding &b, MouseContext context,
 448                             OBClient *client)
 449 {
 450   Window win;
 451   int mode = GrabModeAsync;
 452   switch(context) {
 453   case MC_Frame:
 454     win = client->frame->window();
 455     break;
 456   case MC_Window:
 457     win = client->frame->plate();
 458     mode = GrabModeSync; // this is handled in fireButton
 459     break;
 460   default:
 461     // any other elements already get button events, don't grab on them
 462     return;
 463   }
 464   if (grab)
 465     otk::OBDisplay::grabButton(b.key, b.modifiers, win, false,
 466                                ButtonPressMask | ButtonMotionMask |
 467                                ButtonReleaseMask, mode, GrabModeAsync,
 468                                None, None, false);
 469   else
 470     otk::OBDisplay::ungrabButton(b.key, b.modifiers, win);
 471 }
 472
 473 void OBBindings::grabButtons(bool grab, OBClient *client)
 474 {
 475   for (int i = 0; i < NUM_MOUSE_CONTEXT; ++i) {
 476     ButtonBindingList::iterator it, end = _buttons[i].end();
 477     for (it = _buttons[i].begin(); it != end; ++it)
 478       grabButton(grab, (*it)->binding, (MouseContext)i, client);
 479   }
 480 }
 481
 482 void OBBindings::fireButton(ButtonData *data)
 483 {
 484   if (data->context == MC_Window) {
 485     // these are grabbed in Sync mode to allow the press to be normal to the
 486     // client
 487     XAllowEvents(otk::OBDisplay::display, ReplayPointer, data->time);
 488   }
 489
 490   ButtonBindingList::iterator it, end = _buttons[data->context].end();
 491   for (it = _buttons[data->context].begin(); it != end; ++it)
 492     if ((*it)->binding.key == data->button &&
 493         (*it)->binding.modifiers == data->state) {
 494       if ((*it)->callback[data->action])
 495         python_callback((*it)->callback[data->action], (PyObject*)data);
 496     }
 497 }
 498
 499
 500 bool OBBindings::addEvent(EventAction action, PyObject *callback)
 501 {
 502   if (action < 0 || action >= NUM_EVENTS) {
 503     return false;
 504   }
 505
 506   Py_XDECREF(_events[action]);
 507   _events[action] = callback;
 508   Py_INCREF(callback);
 509   return true;
 510 }
 511
 512 bool OBBindings::removeEvent(EventAction action)
 513 {
 514   if (action < 0 || action >= NUM_EVENTS) {
 515     return false;
 516   }
 517
 518   Py_XDECREF(_events[action]);
 519   _events[action] = 0;
 520   return true;
 521 }
 522
 523 void OBBindings::removeAllEvents()
 524 {
 525   for (int i = 0; i < NUM_EVENTS; ++i) {
 526     Py_XDECREF(_events[i]);
 527     _events[i] = 0;
 528   }
 529 }
 530
 531 void OBBindings::fireEvent(EventData *data)
 532 {
 533   if (_events[data->action])
 534     python_callback(_events[data->action], (PyObject*)data);
 535 }
 536
 537 }