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) 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   KeySym sym = XStringToKeysym(const_cast<char *>(key.c_str()));
  96   if (sym == NoSymbol) {
  97     printf(_("Invalid Key name in key binding: %s\n"), key.c_str());
  98     return false;
  99   }
 100   if (!(b.key = XKeysymToKeycode(otk::OBDisplay::display, sym)))
 101     printf(_("No valid keycode for Key in key binding: %s\n"), key.c_str());
 102   return b.key != 0;
 103 }
 104
 105 static void destroytree(BindingTree *tree)
 106 {
 107   while (tree) {
 108     BindingTree *c = tree->first_child;
 109     delete tree;
 110     tree = c;
 111   }
 112 }
 113
 114 BindingTree *OBBindings::buildtree(const StringVect &keylist, int id) const
 115 {
 116   if (keylist.empty()) return 0; // nothing in the list.. return 0
 117
 118   BindingTree *ret = 0, *p;
 119
 120   StringVect::const_reverse_iterator it, end = keylist.rend();
 121   for (it = keylist.rbegin(); it != end; ++it) {
 122     p = ret;
 123     ret = new BindingTree(id);
 124     if (!p) ret->chain = false; // only the first built node
 125     ret->first_child = p;
 126     if (!translate(*it, ret->binding)) {
 127       destroytree(ret);
 128       ret = 0;
 129       break;
 130     }
 131   }
 132   return ret;
 133 }
 134
 135
 136 OBBindings::OBBindings()
 137   : _curpos(&_tree),
 138     _resetkey(0,0),
 139     _timer(Openbox::instance->timerManager(),
 140            (otk::OBTimeoutHandler)reset, this)
 141 {
 142   _timer.setTimeout(5000); // chains reset after 5 seconds
 143
 144   setResetKey("C-g"); // set the default reset key
 145 }
 146
 147
 148 OBBindings::~OBBindings()
 149 {
 150   grabKeys(false);
 151   remove_all();
 152 }
 153
 154
 155 void OBBindings::assimilate(BindingTree *node)
 156 {
 157   BindingTree *a, *b, *tmp, *last;
 158
 159   if (!_tree.first_child) {
 160     // there are no nodes at this level yet
 161     _tree.first_child = node;
 162   } else {
 163     a = _tree.first_child;
 164     last = a;
 165     b = node;
 166     while (a) {
 167       last = a;
 168       if (a->binding != b->binding) {
 169         a = a->next_sibling;
 170       } else {
 171         tmp = b;
 172         b = b->first_child;
 173         delete tmp;
 174         a = a->first_child;
 175       }
 176     }
 177     if (last->binding != b->binding)
 178       last->next_sibling = b;
 179     else {
 180       last->first_child = b->first_child;
 181       delete b;
 182     }
 183   }
 184 }
 185
 186
 187 int OBBindings::find(BindingTree *search) const {
 188   BindingTree *a, *b;
 189   a = _tree.first_child;
 190   b = search;
 191   while (a && b) {
 192     if (a->binding != b->binding) {
 193       a = a->next_sibling;
 194     } else {
 195       if (a->chain == b->chain) {
 196         if (!a->chain) {
 197           return a->id; // found it! (return the actual id, not the search's)
 198         }
 199       } else {
 200         return -2; // the chain status' don't match (conflict!)
 201       }
 202       b = b->first_child;
 203       a = a->first_child;
 204     }
 205   }
 206   return -1; // it just isn't in here
 207 }
 208
 209
 210 bool OBBindings::add(const StringVect &keylist, int id)
 211 {
 212   BindingTree *tree;
 213
 214   if (!(tree = buildtree(keylist, id)))
 215     return false; // invalid binding requested
 216
 217   if (find(tree) != -1) {
 218     // conflicts with another binding
 219     destroytree(tree);
 220     return false;
 221   }
 222
 223   grabKeys(false);
 224
 225   // assimilate this built tree into the main tree
 226   assimilate(tree); // assimilation destroys/uses the tree
 227
 228   grabKeys(true);
 229
 230   return true;
 231 }
 232
 233
 234 int OBBindings::find(const StringVect &keylist)
 235 {
 236   BindingTree *tree;
 237   bool ret;
 238
 239   if (!(tree = buildtree(keylist, 0)))
 240     return false; // invalid binding requested
 241
 242   ret = find(tree) >= 0;
 243
 244   destroytree(tree);
 245
 246   return ret;
 247 }
 248
 249
 250 int OBBindings::remove(const StringVect &keylist)
 251 {
 252   (void)keylist;
 253   assert(false); // XXX: function not implemented yet
 254
 255   grabKeys(false);
 256   _curpos = &_tree;
 257
 258   // do shit here...
 259
 260   grabKeys(true);
 261
 262 }
 263
 264
 265 void OBBindings::setResetKey(const std::string &key)
 266 {
 267   Binding b(0, 0);
 268   if (translate(key, b)) {
 269     grabKeys(false);
 270     _resetkey.key = b.key;
 271     _resetkey.modifiers = b.modifiers;
 272     grabKeys(true);
 273   }
 274 }
 275
 276
 277 static void remove_branch(BindingTree *first)
 278 {
 279   BindingTree *p = first;
 280
 281   while (p) {
 282     if (p->first_child)
 283       remove_branch(p->first_child);
 284     BindingTree *s = p->next_sibling;
 285     delete p;
 286     p = s;
 287   }
 288 }
 289
 290
 291 void OBBindings::remove_all()
 292 {
 293   if (_tree.first_child) {
 294     remove_branch(_tree.first_child);
 295     _tree.first_child = 0;
 296   }
 297 }
 298
 299
 300 void OBBindings::grabKeys(bool grab)
 301 {
 302   for (int i = 0; i < Openbox::instance->screenCount(); ++i) {
 303     Window root = otk::OBDisplay::screenInfo(i)->rootWindow();
 304
 305     BindingTree *p = _curpos->first_child;
 306     while (p) {
 307       if (grab) {
 308         otk::OBDisplay::grabKey(p->binding.key, p->binding.modifiers,
 309                                 root, false, GrabModeAsync, GrabModeAsync,
 310                                 false);
 311       }
 312       else
 313         otk::OBDisplay::ungrabKey(p->binding.key, p->binding.modifiers,
 314                                   root);
 315       p = p->next_sibling;
 316     }
 317
 318     if (grab)
 319       otk::OBDisplay::grabKey(_resetkey.key, _resetkey.modifiers,
 320                               root, true, GrabModeAsync, GrabModeAsync,
 321                               false);
 322     else
 323       otk::OBDisplay::ungrabKey(_resetkey.key, _resetkey.modifiers,
 324                                 root);
 325   }
 326 }
 327
 328
 329 void OBBindings::fire(Window window, unsigned int modifiers, unsigned int key,
 330                       Time time)
 331 {
 332   if (key == _resetkey.key && modifiers == _resetkey.modifiers) {
 333     reset(this);
 334   } else {
 335     BindingTree *p = _curpos->first_child;
 336     while (p) {
 337       if (p->binding.key == key && p->binding.modifiers == modifiers) {
 338         if (p->chain) {
 339           _timer.start(); // start/restart the timer
 340           grabKeys(false);
 341           _curpos = p;
 342           grabKeys(true);
 343         } else {
 344           python_callback_binding(p->id, window, modifiers, key, time);
 345           reset(this);
 346         }
 347         break;
 348       }
 349       p = p->next_sibling;
 350     }
 351   }
 352 }
 353
 354 void OBBindings::reset(OBBindings *self)
 355 {
 356   self->_timer.stop();
 357   self->grabKeys(false);
 358   self->_curpos = &self->_tree;
 359   self->grabKeys(true);
 360 }
 361
 362 }