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,
  72                            bool askey) const
  73 {
  74   // parse out the base key name
  75   std::string::size_type keybegin = str.find_last_of('-');
  76   keybegin = (keybegin == std::string::npos) ? 0 : keybegin + 1;
  77   std::string key(str, keybegin);
  78
  79   // parse out the requested modifier keys
  80   unsigned int modval = 0;
  81   std::string::size_type begin = 0, end;
  82   while (begin != keybegin) {
  83     end = str.find_first_of('-', begin);
  84
  85     std::string mod(str, begin, end-begin);
  86     if (!modvalue(mod, &modval)) {
  87       printf(_("Invalid modifier element in key binding: %s\n"), mod.c_str());
  88       return false;
  89     }
  90
  91     begin = end + 1;
  92   }
  93
  94   // set the binding
  95   b.modifiers = modval;
  96   if (askey) {
  97     KeySym sym = XStringToKeysym(const_cast<char *>(key.c_str()));
  98     if (sym == NoSymbol) {
  99       printf(_("Invalid Key name in key binding: %s\n"), key.c_str());
 100       return false;
 101     }
 102     if (!(b.key = XKeysymToKeycode(otk::OBDisplay::display, sym)))
 103       printf(_("No valid keycode for Key in key binding: %s\n"), key.c_str());
 104     return b.key != 0;
 105   } else {
 106     if (!buttonvalue(key, &b.key)) {
 107       printf(_("Invalid Button name in mouse binding: %s\n"), key.c_str());
 108       return false;
 109     } else
 110       return true;
 111   }
 112 }
 113
 114 static void destroytree(BindingTree *tree)
 115 {
 116   while (tree) {
 117     BindingTree *c = tree->first_child;
 118     delete tree;
 119     tree = c;
 120   }
 121 }
 122
 123 BindingTree *OBBindings::buildtree(const StringVect &keylist, int id) const
 124 {
 125   if (keylist.empty()) return 0; // nothing in the list.. return 0
 126
 127   BindingTree *ret = 0, *p;
 128
 129   StringVect::const_reverse_iterator it, end = keylist.rend();
 130   for (it = keylist.rbegin(); it != end; ++it) {
 131     p = ret;
 132     ret = new BindingTree(id);
 133     if (!p) ret->chain = false; // only the first built node
 134     ret->first_child = p;
 135     if (!translate(*it, ret->binding, true)) {
 136       destroytree(ret);
 137       ret = 0;
 138       break;
 139     }
 140   }
 141   return ret;
 142 }
 143
 144
 145 OBBindings::OBBindings()
 146   : _curpos(&_keytree), _mousetree(0), _resetkey(0,0)
 147 {
 148   setResetKey("C-g"); // set the default reset key
 149 }
 150
 151
 152 OBBindings::~OBBindings()
 153 {
 154   grabMouseOnAll(false); // ungrab everything
 155   grabKeys(false);
 156   remove_all();
 157 }
 158
 159
 160 bool OBBindings::add_mouse(const std::string &button, int id)
 161 {
 162   BindingTree n;
 163
 164   if (!translate(button, n.binding, false))
 165     return false;
 166
 167   BindingTree *p = _mousetree, **newp = &_mousetree;
 168   while (p) {
 169     if (p->binding == n.binding)
 170       return false; // conflict
 171     p = p->next_sibling;
 172     newp = &p->next_sibling;
 173   }
 174
 175   grabMouseOnAll(false); // ungrab everything
 176
 177   *newp = new BindingTree(id);
 178   (*newp)->chain = false;
 179   (*newp)->binding.key = n.binding.key;
 180   (*newp)->binding.modifiers = n.binding.modifiers;
 181
 182   grabMouseOnAll(true);
 183
 184   return true;
 185 }
 186
 187
 188 int OBBindings::remove_mouse(const std::string &button)
 189 {
 190   (void)button;
 191   assert(false); // XXX: function not implemented yet
 192
 193   grabMouseOnAll(false); // ungrab everything
 194
 195   // do shit...
 196
 197   grabMouseOnAll(true);
 198 }
 199
 200
 201 void OBBindings::assimilate(BindingTree *node)
 202 {
 203   BindingTree *a, *b, *tmp, *last;
 204
 205   if (!_keytree.first_child) {
 206     // there are no nodes at this level yet
 207     _keytree.first_child = node;
 208   } else {
 209     a = _keytree.first_child;
 210     last = a;
 211     b = node;
 212     while (a) {
 213       last = a;
 214       if (a->binding != b->binding) {
 215         a = a->next_sibling;
 216       } else {
 217         tmp = b;
 218         b = b->first_child;
 219         delete tmp;
 220         a = a->first_child;
 221       }
 222     }
 223     if (last->binding != b->binding)
 224       last->next_sibling = b;
 225     else {
 226       last->first_child = b->first_child;
 227       delete b;
 228     }
 229   }
 230 }
 231
 232
 233 int OBBindings::find_key(BindingTree *search) const {
 234   BindingTree *a, *b;
 235   a = _keytree.first_child;
 236   b = search;
 237   while (a && b) {
 238     if (a->binding != b->binding) {
 239       a = a->next_sibling;
 240     } else {
 241       if (a->chain == b->chain) {
 242         if (!a->chain) {
 243           return a->id; // found it! (return the actual id, not the search's)
 244         }
 245       } else {
 246         return -2; // the chain status' don't match (conflict!)
 247       }
 248       b = b->first_child;
 249       a = a->first_child;
 250     }
 251   }
 252   return -1; // it just isn't in here
 253 }
 254
 255
 256 bool OBBindings::add_key(const StringVect &keylist, int id)
 257 {
 258   BindingTree *tree;
 259
 260   if (!(tree = buildtree(keylist, id)))
 261     return false; // invalid binding requested
 262
 263   if (find_key(tree) != -1) {
 264     // conflicts with another binding
 265     destroytree(tree);
 266     return false;
 267   }
 268
 269   grabKeys(false);
 270
 271   // assimilate this built tree into the main tree
 272   assimilate(tree); // assimilation destroys/uses the tree
 273
 274   grabKeys(true);
 275
 276   return true;
 277 }
 278
 279
 280 int OBBindings::find_key(const StringVect &keylist)
 281 {
 282   BindingTree *tree;
 283   bool ret;
 284
 285   if (!(tree = buildtree(keylist, 0)))
 286     return false; // invalid binding requested
 287
 288   ret = find_key(tree) >= 0;
 289
 290   destroytree(tree);
 291
 292   return ret;
 293 }
 294
 295
 296 int OBBindings::remove_key(const StringVect &keylist)
 297 {
 298   (void)keylist;
 299   assert(false); // XXX: function not implemented yet
 300
 301   grabKeys(false);
 302   _curpos = &_keytree;
 303
 304   // do shit here...
 305
 306   grabKeys(true);
 307
 308 }
 309
 310
 311 void OBBindings::setResetKey(const std::string &key)
 312 {
 313   Binding b(0, 0);
 314   if (translate(key, b, true)) {
 315     grabKeys(false);
 316     _resetkey.key = b.key;
 317     _resetkey.modifiers = b.modifiers;
 318     grabKeys(true);
 319   }
 320 }
 321
 322
 323 static void remove_branch(BindingTree *first)
 324 {
 325   BindingTree *p = first;
 326
 327   while (p) {
 328     if (p->first_child)
 329       remove_branch(p->first_child);
 330     BindingTree *s = p->next_sibling;
 331     delete p;
 332     p = s;
 333   }
 334 }
 335
 336
 337 void OBBindings::remove_all()
 338 {
 339   if (_keytree.first_child) {
 340     remove_branch(_keytree.first_child);
 341     _keytree.first_child = 0;
 342   }
 343   BindingTree *p = _mousetree;
 344   while (p) {
 345     BindingTree *n = p->next_sibling;
 346     delete p;
 347     p = n;
 348   }
 349   _mousetree = 0;
 350 }
 351
 352
 353 void OBBindings::grabMouse(bool grab, const OBClient *client)
 354 {
 355   BindingTree *p = _mousetree;
 356   while (p) {
 357     if (grab)
 358       otk::OBDisplay::grabButton(p->binding.key, p->binding.modifiers,
 359                                  client->frame->window(), false,
 360                                  ButtonMotionMask | ButtonPressMask |
 361                                  ButtonReleaseMask, GrabModeAsync,
 362                                  GrabModeAsync, None, None, false);
 363     else
 364       otk::OBDisplay::ungrabButton(p->binding.key, p->binding.modifiers,
 365                                    client->frame->window());
 366     p = p->next_sibling;
 367   }
 368 }
 369
 370
 371 void OBBindings::grabMouseOnAll(bool grab)
 372 {
 373   for (int i = 0; i < Openbox::instance->screenCount(); ++i) {
 374     OBScreen *s = Openbox::instance->screen(i);
 375     assert(s);
 376     OBScreen::ClientList::iterator it, end = s->clients.end();
 377     for (it = s->clients.begin(); it != end; ++it)
 378       grabMouse(grab, *it);
 379   }
 380 }
 381
 382
 383 void OBBindings::grabKeys(bool grab)
 384 {
 385   for (int i = 0; i < Openbox::instance->screenCount(); ++i) {
 386     Window root = otk::OBDisplay::screenInfo(i)->rootWindow();
 387
 388     BindingTree *p = _curpos->first_child;
 389     while (p) {
 390       if (grab)
 391         otk::OBDisplay::grabKey(p->binding.key, p->binding.modifiers,
 392                                 root, false, GrabModeAsync, GrabModeAsync,
 393                                 false);
 394       else
 395         otk::OBDisplay::ungrabKey(p->binding.key, p->binding.modifiers,
 396                                   root);
 397       p = p->next_sibling;
 398     }
 399
 400     if (grab)
 401       otk::OBDisplay::grabKey(_resetkey.key, _resetkey.modifiers,
 402                               root, true, GrabModeAsync, GrabModeAsync,
 403                               false);
 404     else
 405       otk::OBDisplay::ungrabKey(_resetkey.key, _resetkey.modifiers,
 406                                 root);
 407   }
 408 }
 409
 410
 411 void OBBindings::fire(OBActions::ActionType type, Window window,
 412                       unsigned int modifiers, unsigned int key, Time time)
 413 {
 414   if (type == OBActions::Action_KeyPress) {
 415     if (key == _resetkey.key && modifiers == _resetkey.modifiers) {
 416       grabKeys(false);
 417       _curpos = &_keytree;
 418       grabKeys(true);
 419     } else {
 420       BindingTree *p = _curpos->first_child;
 421       while (p) {
 422         if (p->binding.key == key && p->binding.modifiers == modifiers) {
 423           if (p->chain) {
 424             grabKeys(false);
 425             _curpos = p;
 426             grabKeys(true);
 427           } else {
 428             python_callback_binding(p->id, type, window, modifiers, key, time);
 429             grabKeys(false);
 430             _curpos = &_keytree;
 431             grabKeys(true);
 432           }
 433           break;
 434         }
 435         p = p->next_sibling;
 436       }
 437     }
 438   } else {
 439     BindingTree *p = _mousetree;
 440     while (p) {
 441       if (p->binding.key == key && p->binding.modifiers == modifiers) {
 442         python_callback_binding(p->id, type, window, modifiers, key, time);
 443         break;
 444       }
 445       p = p->next_sibling;
 446     }
 447   }
 448 }
 449
 450
 451 }