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