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 "otk/display.hh"
   9
  10 extern "C" {
  11 #include <X11/Xlib.h>
  12
  13 #include "gettext.h"
  14 #define _(str) gettext(str)
  15 }
  16
  17 namespace ob {
  18
  19 #include <stdio.h>
  20 static void print_branch(BindingTree *first, std::string str)
  21 {
  22   BindingTree *p = first;
  23
  24   while (p) {
  25     if (p->first_child)
  26       print_branch(p->first_child, str + " " + p->text);
  27     if (!p->chain)
  28       printf("%d%s\n", p->id, (str + " " + p->text).c_str());
  29     p = p->next_sibling;
  30   }
  31 }
  32
  33
  34 void OBBindings::display()
  35 {
  36   if (_keytree.first_child) {
  37     printf("Key Tree:\n");
  38     print_branch(_keytree.first_child, "");
  39   }
  40   if (_mousetree.next_sibling) {
  41     printf("Mouse Tree:\n");
  42     BindingTree *p = _mousetree.next_sibling;
  43     while (p) {
  44       printf("%d %s\n", p->id, p->text.c_str());
  45       p = p->next_sibling;
  46     }
  47   }
  48 }
  49
  50
  51 static bool buttonvalue(const std::string &button, unsigned int *val)
  52 {
  53   if (button == "1" || button == "Button1") {
  54     *val |= Button1;
  55   } else if (button == "2" || button == "Button2") {
  56     *val |= Button2;
  57   } else if (button == "3" || button == "Button3") {
  58     *val |= Button3;
  59   } else if (button == "4" || button == "Button4") {
  60     *val |= Button4;
  61   } else if (button == "5" || button == "Button5") {
  62     *val |= Button5;
  63   } else
  64     return false;
  65   return true;
  66 }
  67
  68 static bool modvalue(const std::string &mod, unsigned int *val)
  69 {
  70   if (mod == "C") {           // control
  71     *val |= ControlMask;
  72   } else if (mod == "S") {    // shift
  73     *val |= ShiftMask;
  74   } else if (mod == "A" ||    // alt/mod1
  75              mod == "M" ||
  76              mod == "Mod1" ||
  77              mod == "M1") {
  78     *val |= Mod1Mask;
  79   } else if (mod == "Mod2" ||   // mod2
  80              mod == "M2") {
  81     *val |= Mod2Mask;
  82   } else if (mod == "Mod3" ||   // mod3
  83              mod == "M3") {
  84     *val |= Mod3Mask;
  85   } else if (mod == "W" ||    // windows/mod4
  86              mod == "Mod4" ||
  87              mod == "M4") {
  88     *val |= Mod4Mask;
  89   } else if (mod == "Mod5" ||   // mod5
  90              mod == "M5") {
  91     *val |= Mod5Mask;
  92   } else {                    // invalid
  93     return false;
  94   }
  95   return true;
  96 }
  97
  98 bool OBBindings::translate(const std::string &str, Binding &b, bool askey)
  99 {
 100   // parse out the base key name
 101   std::string::size_type keybegin = str.find_last_of('-');
 102   keybegin = (keybegin == std::string::npos) ? 0 : keybegin + 1;
 103   std::string key(str, keybegin);
 104
 105   // parse out the requested modifier keys
 106   unsigned int modval = 0;
 107   std::string::size_type begin = 0, end;
 108   while (begin != keybegin) {
 109     end = str.find_first_of('-', begin);
 110
 111     std::string mod(str, begin, end-begin);
 112     if (!modvalue(mod, &modval)) {
 113 //      printf(_("Invalid modifier element in key binding: %s\n"), mod.c_str());
 114       return false;
 115     }
 116
 117     begin = end + 1;
 118   }
 119
 120   // set the binding
 121   b.modifiers = modval;
 122   if (askey) {
 123     KeySym sym = XStringToKeysym(const_cast<char *>(key.c_str()));
 124     if (sym == NoSymbol) return false;
 125     b.key = XKeysymToKeycode(otk::OBDisplay::display, sym);
 126     return b.key != 0;
 127   } else {
 128     return buttonvalue(key, &b.key);
 129   }
 130 }
 131
 132 static void destroytree(BindingTree *tree)
 133 {
 134   while (tree) {
 135     BindingTree *c = tree->first_child;
 136     delete tree;
 137     tree = c;
 138   }
 139 }
 140
 141 BindingTree *OBBindings::buildtree(const StringVect &keylist, int id)
 142 {
 143   if (keylist.empty()) return 0; // nothing in the list.. return 0
 144
 145   BindingTree *ret = 0, *p;
 146
 147   StringVect::const_reverse_iterator it, end = keylist.rend();
 148   for (it = keylist.rbegin(); it != end; ++it) {
 149     p = ret;
 150     ret = new BindingTree(id);
 151     if (!p) ret->chain = false;
 152     ret->first_child = p;
 153     if (!translate(*it, ret->binding, true)) {
 154       destroytree(ret);
 155       ret = 0;
 156       break;
 157     }
 158     ret->text = *it; // XXX: rm me
 159   }
 160   return ret;
 161 }
 162
 163
 164 OBBindings::OBBindings()
 165   : _curpos(&_keytree)
 166 {
 167 }
 168
 169
 170 OBBindings::~OBBindings()
 171 {
 172   remove_all();
 173 }
 174
 175
 176 bool OBBindings::add_mouse(const std::string &button, int id)
 177 {
 178   BindingTree n;
 179
 180   if (!translate(button, n.binding, false))
 181     return false;
 182
 183   BindingTree *p = _mousetree.next_sibling, *last = &_mousetree;
 184   while (p) {
 185     if (p->binding == n.binding)
 186       return false; // conflict
 187     last = p;
 188     p = p->next_sibling;
 189   }
 190   display();
 191   last->next_sibling = new BindingTree(id);
 192   display();
 193   last->next_sibling->chain = false;
 194   last->next_sibling->binding.key = n.binding.key;
 195   last->next_sibling->binding.modifiers = n.binding.modifiers;
 196
 197   return true;
 198 }
 199
 200
 201 int OBBindings::remove_mouse(const std::string &button)
 202 {
 203   (void)button;
 204   assert(false); // XXX: function not implemented yet
 205 }
 206
 207
 208 void OBBindings::assimilate(BindingTree *node)
 209 {
 210   BindingTree *a, *b, *tmp, *last;
 211
 212   if (!_keytree.first_child) {
 213     // there are no nodes at this level yet
 214     _keytree.first_child = node;
 215     return;
 216   } else {
 217     a = _keytree.first_child;
 218     last = a;
 219     b = node;
 220     while (a) {
 221       last = a;
 222       if (a->binding != b->binding) {
 223         a = a->next_sibling;
 224       } else {
 225         tmp = b;
 226         b = b->first_child;
 227         delete tmp;
 228         a = a->first_child;
 229       }
 230     }
 231     if (last->binding != b->binding)
 232       last->next_sibling = b;
 233     else
 234       last->first_child = b->first_child;
 235     delete b;
 236   }
 237 }
 238
 239
 240 int OBBindings::find_key(BindingTree *search) {
 241   BindingTree *a, *b;
 242   a = _keytree.first_child;
 243   b = search;
 244   while (a && b) {
 245     if (a->binding != b->binding) {
 246       a = a->next_sibling;
 247     } else {
 248       if (a->chain == b->chain) {
 249         if (!a->chain)
 250           return a->id; // found it! (return the actual id, not the search's)
 251       } else
 252           return -2; // the chain status' don't match (conflict!)
 253       b = b->first_child;
 254       a = a->first_child;
 255     }
 256   }
 257   return -1; // it just isn't in here
 258 }
 259
 260 bool OBBindings::add_key(const StringVect &keylist, int id)
 261 {
 262   BindingTree *tree;
 263
 264   if (!(tree = buildtree(keylist, id)))
 265     return false; // invalid binding requested
 266
 267   if (find_key(tree) < -1) {
 268     // conflicts with another binding
 269     destroytree(tree);
 270     return false;
 271   }
 272
 273   // assimilate this built tree into the main tree
 274   assimilate(tree); // assimilation destroys/uses the tree
 275   return true;
 276 }
 277
 278
 279 int OBBindings::find_key(const StringVect &keylist)
 280 {
 281   BindingTree *tree;
 282   bool ret;
 283
 284   if (!(tree = buildtree(keylist, 0)))
 285     return false; // invalid binding requested
 286
 287   ret = find_key(tree) >= 0;
 288
 289   destroytree(tree);
 290
 291   return ret;
 292 }
 293
 294
 295 int OBBindings::remove_key(const StringVect &keylist)
 296 {
 297   (void)keylist;
 298   assert(false); // XXX: function not implemented yet
 299 }
 300
 301
 302 static void remove_branch(BindingTree *first)
 303 {
 304   BindingTree *p = first;
 305
 306   while (p) {
 307     if (p->first_child)
 308       remove_branch(p->first_child);
 309     BindingTree *s = p->next_sibling;
 310     delete p;
 311     p = s;
 312   }
 313 }
 314
 315
 316 void OBBindings::remove_all()
 317 {
 318   if (_keytree.first_child) {
 319     remove_branch(_keytree.first_child);
 320     _keytree.first_child = 0;
 321   }
 322   BindingTree *p = _mousetree.next_sibling;
 323   while (p) {
 324     BindingTree *n = p->next_sibling;
 325     delete p;
 326     p = n;
 327   }
 328   _mousetree.next_sibling = 0;
 329 }
 330
 331
 332 void OBBindings::process(unsigned int modifiers, unsigned int key)
 333 {
 334   BindingTree *c = _curpos->first_child;
 335
 336   while (c) {
 337     if (c->binding.key == key && c->binding.modifiers == modifiers) {
 338       _curpos = c;
 339       break;
 340     }
 341   }
 342   if (c) {
 343     if (!_curpos->chain) {
 344       // XXX execute command for _curpos->id
 345       _curpos = &_keytree; // back to the start
 346     }
 347   }
 348 }
 349
 350 }