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