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) {
  41     printf("Mouse Tree:\n");
  42     BindingTree *p = _mousetree;
  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, **newp = &_mousetree;
 184   while (p) {
 185     if (p->binding == n.binding)
 186       return false; // conflict
 187     p = p->next_sibling;
 188     newp = &p->next_sibling;
 189   }
 190   display();
 191   *newp = new BindingTree(id);
 192   display();
 193   (*newp)->text = button;
 194   (*newp)->chain = false;
 195   (*newp)->binding.key = n.binding.key;
 196   (*newp)->binding.modifiers = n.binding.modifiers;
 197
 198   return true;
 199 }
 200
 201
 202 int OBBindings::remove_mouse(const std::string &button)
 203 {
 204   (void)button;
 205   assert(false); // XXX: function not implemented yet
 206 }
 207
 208
 209 void OBBindings::assimilate(BindingTree *node)
 210 {
 211   BindingTree *a, *b, *tmp, *last;
 212
 213   if (!_keytree.first_child) {
 214     // there are no nodes at this level yet
 215     _keytree.first_child = node;
 216     return;
 217   } else {
 218     a = _keytree.first_child;
 219     last = a;
 220     b = node;
 221     while (a) {
 222       last = a;
 223       if (a->binding != b->binding) {
 224         a = a->next_sibling;
 225       } else {
 226         tmp = b;
 227         b = b->first_child;
 228         delete tmp;
 229         a = a->first_child;
 230       }
 231     }
 232     if (last->binding != b->binding)
 233       last->next_sibling = b;
 234     else
 235       last->first_child = b->first_child;
 236     delete b;
 237   }
 238 }
 239
 240
 241 int OBBindings::find_key(BindingTree *search) {
 242   BindingTree *a, *b;
 243   a = _keytree.first_child;
 244   b = search;
 245   while (a && b) {
 246     if (a->binding != b->binding) {
 247       a = a->next_sibling;
 248     } else {
 249       if (a->chain == b->chain) {
 250         if (!a->chain)
 251           return a->id; // found it! (return the actual id, not the search's)
 252       } else
 253           return -2; // the chain status' don't match (conflict!)
 254       b = b->first_child;
 255       a = a->first_child;
 256     }
 257   }
 258   return -1; // it just isn't in here
 259 }
 260
 261 bool OBBindings::add_key(const StringVect &keylist, int id)
 262 {
 263   BindingTree *tree;
 264
 265   if (!(tree = buildtree(keylist, id)))
 266     return false; // invalid binding requested
 267
 268   if (find_key(tree) < -1) {
 269     // conflicts with another binding
 270     destroytree(tree);
 271     return false;
 272   }
 273
 274   // assimilate this built tree into the main tree
 275   assimilate(tree); // assimilation destroys/uses the tree
 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
 302
 303 static void remove_branch(BindingTree *first)
 304 {
 305   BindingTree *p = first;
 306
 307   while (p) {
 308     if (p->first_child)
 309       remove_branch(p->first_child);
 310     BindingTree *s = p->next_sibling;
 311     delete p;
 312     p = s;
 313   }
 314 }
 315
 316
 317 void OBBindings::remove_all()
 318 {
 319   if (_keytree.first_child) {
 320     remove_branch(_keytree.first_child);
 321     _keytree.first_child = 0;
 322   }
 323   BindingTree *p = _mousetree;
 324   while (p) {
 325     BindingTree *n = p->next_sibling;
 326     delete p;
 327     p = n;
 328   }
 329   _mousetree = 0;
 330 }
 331
 332
 333 void OBBindings::process(unsigned int modifiers, unsigned int key)
 334 {
 335   BindingTree *c = _curpos->first_child;
 336
 337   while (c) {
 338     if (c->binding.key == key && c->binding.modifiers == modifiers) {
 339       _curpos = c;
 340       break;
 341     }
 342   }
 343   if (c) {
 344     if (!_curpos->chain) {
 345       // XXX execute command for _curpos->id
 346       _curpos = &_keytree; // back to the start
 347     }
 348   }
 349 }
 350
 351 }