glue/eggaccelerators.c

   1 /* eggaccelerators.c
   2  * Copyright (C) 2002  Red Hat, Inc.; Copyright 1998, 2001 Tim Janik
   3  * Developed by Havoc Pennington, Tim Janik
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "eggaccelerators.h"
  22
  23 #include <string.h>
  24 #include <gdk/gdkx.h>
  25 #include <gdk/gdkkeysyms.h>
  26
  27 enum
  28 {
  29   EGG_MODMAP_ENTRY_SHIFT   = 0,
  30   EGG_MODMAP_ENTRY_LOCK    = 1,
  31   EGG_MODMAP_ENTRY_CONTROL = 2,
  32   EGG_MODMAP_ENTRY_MOD1    = 3,
  33   EGG_MODMAP_ENTRY_MOD2    = 4,
  34   EGG_MODMAP_ENTRY_MOD3    = 5,
  35   EGG_MODMAP_ENTRY_MOD4    = 6,
  36   EGG_MODMAP_ENTRY_MOD5    = 7,
  37   EGG_MODMAP_ENTRY_LAST    = 8
  38 };
  39
  40 #define MODMAP_ENTRY_TO_MODIFIER(x) (1 << (x))
  41
  42 typedef struct
  43 {
  44   EggVirtualModifierType mapping[EGG_MODMAP_ENTRY_LAST];
  45
  46 } EggModmap;
  47
  48 const EggModmap* egg_keymap_get_modmap (GdkKeymap *keymap);
  49
  50 static inline gboolean
  51 is_alt (const gchar *string)
  52 {
  53   return ((string[0] == '<') &&
  54           (string[1] == 'a' || string[1] == 'A') &&
  55           (string[2] == 'l' || string[2] == 'L') &&
  56           (string[3] == 't' || string[3] == 'T') &&
  57           (string[4] == '>'));
  58 }
  59
  60 static inline gboolean
  61 is_ctl (const gchar *string)
  62 {
  63   return ((string[0] == '<') &&
  64           (string[1] == 'c' || string[1] == 'C') &&
  65           (string[2] == 't' || string[2] == 'T') &&
  66           (string[3] == 'l' || string[3] == 'L') &&
  67           (string[4] == '>'));
  68 }
  69
  70 static inline gboolean
  71 is_modx (const gchar *string)
  72 {
  73   return ((string[0] == '<') &&
  74           (string[1] == 'm' || string[1] == 'M') &&
  75           (string[2] == 'o' || string[2] == 'O') &&
  76           (string[3] == 'd' || string[3] == 'D') &&
  77           (string[4] >= '1' && string[4] <= '5') &&
  78           (string[5] == '>'));
  79 }
  80
  81 static inline gboolean
  82 is_ctrl (const gchar *string)
  83 {
  84   return ((string[0] == '<') &&
  85           (string[1] == 'c' || string[1] == 'C') &&
  86           (string[2] == 't' || string[2] == 'T') &&
  87           (string[3] == 'r' || string[3] == 'R') &&
  88           (string[4] == 'l' || string[4] == 'L') &&
  89           (string[5] == '>'));
  90 }
  91
  92 static inline gboolean
  93 is_shft (const gchar *string)
  94 {
  95   return ((string[0] == '<') &&
  96           (string[1] == 's' || string[1] == 'S') &&
  97           (string[2] == 'h' || string[2] == 'H') &&
  98           (string[3] == 'f' || string[3] == 'F') &&
  99           (string[4] == 't' || string[4] == 'T') &&
 100           (string[5] == '>'));
 101 }
 102
 103 static inline gboolean
 104 is_shift (const gchar *string)
 105 {
 106   return ((string[0] == '<') &&
 107           (string[1] == 's' || string[1] == 'S') &&
 108           (string[2] == 'h' || string[2] == 'H') &&
 109           (string[3] == 'i' || string[3] == 'I') &&
 110           (string[4] == 'f' || string[4] == 'F') &&
 111           (string[5] == 't' || string[5] == 'T') &&
 112           (string[6] == '>'));
 113 }
 114
 115 static inline gboolean
 116 is_control (const gchar *string)
 117 {
 118   return ((string[0] == '<') &&
 119           (string[1] == 'c' || string[1] == 'C') &&
 120           (string[2] == 'o' || string[2] == 'O') &&
 121           (string[3] == 'n' || string[3] == 'N') &&
 122           (string[4] == 't' || string[4] == 'T') &&
 123           (string[5] == 'r' || string[5] == 'R') &&
 124           (string[6] == 'o' || string[6] == 'O') &&
 125           (string[7] == 'l' || string[7] == 'L') &&
 126           (string[8] == '>'));
 127 }
 128
 129 static inline gboolean
 130 is_release (const gchar *string)
 131 {
 132   return ((string[0] == '<') &&
 133           (string[1] == 'r' || string[1] == 'R') &&
 134           (string[2] == 'e' || string[2] == 'E') &&
 135           (string[3] == 'l' || string[3] == 'L') &&
 136           (string[4] == 'e' || string[4] == 'E') &&
 137           (string[5] == 'a' || string[5] == 'A') &&
 138           (string[6] == 's' || string[6] == 'S') &&
 139           (string[7] == 'e' || string[7] == 'E') &&
 140           (string[8] == '>'));
 141 }
 142
 143 static inline gboolean
 144 is_meta (const gchar *string)
 145 {
 146   return ((string[0] == '<') &&
 147           (string[1] == 'm' || string[1] == 'M') &&
 148           (string[2] == 'e' || string[2] == 'E') &&
 149           (string[3] == 't' || string[3] == 'T') &&
 150           (string[4] == 'a' || string[4] == 'A') &&
 151           (string[5] == '>'));
 152 }
 153
 154 static inline gboolean
 155 is_super (const gchar *string)
 156 {
 157   return ((string[0] == '<') &&
 158           (string[1] == 's' || string[1] == 'S') &&
 159           (string[2] == 'u' || string[2] == 'U') &&
 160           (string[3] == 'p' || string[3] == 'P') &&
 161           (string[4] == 'e' || string[4] == 'E') &&
 162           (string[5] == 'r' || string[5] == 'R') &&
 163           (string[6] == '>'));
 164 }
 165
 166 static inline gboolean
 167 is_hyper (const gchar *string)
 168 {
 169   return ((string[0] == '<') &&
 170           (string[1] == 'h' || string[1] == 'H') &&
 171           (string[2] == 'y' || string[2] == 'Y') &&
 172           (string[3] == 'p' || string[3] == 'P') &&
 173           (string[4] == 'e' || string[4] == 'E') &&
 174           (string[5] == 'r' || string[5] == 'R') &&
 175           (string[6] == '>'));
 176 }
 177
 178 /**
 179  * egg_accelerator_parse_virtual:
 180  * @accelerator:      string representing an accelerator
 181  * @accelerator_key:  return location for accelerator keyval
 182  * @accelerator_mods: return location for accelerator modifier mask
 183  *
 184  * Parses a string representing a virtual accelerator. The format
 185  * looks like "&lt;Control&gt;a" or "&lt;Shift&gt;&lt;Alt&gt;F1" or
 186  * "&lt;Release&gt;z" (the last one is for key release).  The parser
 187  * is fairly liberal and allows lower or upper case, and also
 188  * abbreviations such as "&lt;Ctl&gt;" and "&lt;Ctrl&gt;".
 189  *
 190  * If the parse fails, @accelerator_key and @accelerator_mods will
 191  * be set to 0 (zero) and %FALSE will be returned. If the string contains
 192  * only modifiers, @accelerator_key will be set to 0 but %TRUE will be
 193  * returned.
 194  *
 195  * The virtual vs. concrete accelerator distinction is a relic of
 196  * how the X Window System works; there are modifiers Mod2-Mod5 that
 197  * can represent various keyboard keys (numlock, meta, hyper, etc.),
 198  * the virtual modifier represents the keyboard key, the concrete
 199  * modifier the actual Mod2-Mod5 bits in the key press event.
 200  *
 201  * Returns: %TRUE on success.
 202  */
 203 gboolean
 204 egg_accelerator_parse_virtual (const gchar            *accelerator,
 205                                guint                  *accelerator_key,
 206                                EggVirtualModifierType *accelerator_mods)
 207 {
 208   guint keyval;
 209   GdkModifierType mods;
 210   gint len;
 211   gboolean bad_keyval;
 212
 213   if (accelerator_key)
 214     *accelerator_key = 0;
 215   if (accelerator_mods)
 216     *accelerator_mods = 0;
 217
 218   g_return_val_if_fail (accelerator != NULL, FALSE);
 219
 220   bad_keyval = FALSE;
 221
 222   keyval = 0;
 223   mods = 0;
 224   len = strlen (accelerator);
 225   while (len)
 226     {
 227       if (*accelerator == '<')
 228         {
 229           if (len >= 9 && is_release (accelerator))
 230             {
 231               accelerator += 9;
 232               len -= 9;
 233               mods |= EGG_VIRTUAL_RELEASE_MASK;
 234             }
 235           else if (len >= 9 && is_control (accelerator))
 236             {
 237               accelerator += 9;
 238               len -= 9;
 239               mods |= EGG_VIRTUAL_CONTROL_MASK;
 240             }
 241           else if (len >= 7 && is_shift (accelerator))
 242             {
 243               accelerator += 7;
 244               len -= 7;
 245               mods |= EGG_VIRTUAL_SHIFT_MASK;
 246             }
 247           else if (len >= 6 && is_shft (accelerator))
 248             {
 249               accelerator += 6;
 250               len -= 6;
 251               mods |= EGG_VIRTUAL_SHIFT_MASK;
 252             }
 253           else if (len >= 6 && is_ctrl (accelerator))
 254             {
 255               accelerator += 6;
 256               len -= 6;
 257               mods |= EGG_VIRTUAL_CONTROL_MASK;
 258             }
 259           else if (len >= 6 && is_modx (accelerator))
 260             {
 261               static const guint mod_vals[] = {
 262                 EGG_VIRTUAL_ALT_MASK, EGG_VIRTUAL_MOD2_MASK, EGG_VIRTUAL_MOD3_MASK,
 263                 EGG_VIRTUAL_MOD4_MASK, EGG_VIRTUAL_MOD5_MASK
 264               };
 265
 266               len -= 6;
 267               accelerator += 4;
 268               mods |= mod_vals[*accelerator - '1'];
 269               accelerator += 2;
 270             }
 271           else if (len >= 5 && is_ctl (accelerator))
 272             {
 273               accelerator += 5;
 274               len -= 5;
 275               mods |= EGG_VIRTUAL_CONTROL_MASK;
 276             }
 277           else if (len >= 5 && is_alt (accelerator))
 278             {
 279               accelerator += 5;
 280               len -= 5;
 281               mods |= EGG_VIRTUAL_ALT_MASK;
 282             }
 283           else if (len >= 6 && is_meta (accelerator))
 284             {
 285               accelerator += 6;
 286               len -= 6;
 287               mods |= EGG_VIRTUAL_META_MASK;
 288             }
 289           else if (len >= 7 && is_hyper (accelerator))
 290             {
 291               accelerator += 7;
 292               len -= 7;
 293               mods |= EGG_VIRTUAL_HYPER_MASK;
 294             }
 295           else if (len >= 7 && is_super (accelerator))
 296             {
 297               accelerator += 7;
 298               len -= 7;
 299               mods |= EGG_VIRTUAL_SUPER_MASK;
 300             }
 301           else
 302             {
 303               gchar last_ch;
 304
 305               last_ch = *accelerator;
 306               while (last_ch && last_ch != '>')
 307                 {
 308                   last_ch = *accelerator;
 309                   accelerator += 1;
 310                   len -= 1;
 311                 }
 312             }
 313         }
 314       else
 315         {
 316           keyval = gdk_keyval_from_name (accelerator);
 317
 318           if (keyval == 0)
 319             bad_keyval = TRUE;
 320
 321           accelerator += len;
 322           len -= len;
 323         }
 324     }
 325
 326   if (accelerator_key)
 327     *accelerator_key = gdk_keyval_to_lower (keyval);
 328   if (accelerator_mods)
 329     *accelerator_mods = mods;
 330
 331   return !bad_keyval;
 332 }
 333
 334
 335 /**
 336  * egg_virtual_accelerator_name:
 337  * @accelerator_key:  accelerator keyval
 338  * @accelerator_mods: accelerator modifier mask
 339  * @returns:          a newly-allocated accelerator name
 340  *
 341  * Converts an accelerator keyval and modifier mask
 342  * into a string parseable by egg_accelerator_parse_virtual().
 343  * For example, if you pass in #GDK_q and #EGG_VIRTUAL_CONTROL_MASK,
 344  * this function returns "&lt;Control&gt;q".
 345  *
 346  * The caller of this function must free the returned string.
 347  */
 348 gchar*
 349 egg_virtual_accelerator_name (guint                  accelerator_key,
 350                               EggVirtualModifierType accelerator_mods)
 351 {
 352   static const gchar text_release[] = "<Release>";
 353   static const gchar text_shift[] = "<Shift>";
 354   static const gchar text_control[] = "<Control>";
 355   static const gchar text_mod1[] = "<Alt>";
 356   static const gchar text_mod2[] = "<Mod2>";
 357   static const gchar text_mod3[] = "<Mod3>";
 358   static const gchar text_mod4[] = "<Mod4>";
 359   static const gchar text_mod5[] = "<Mod5>";
 360   static const gchar text_meta[] = "<Meta>";
 361   static const gchar text_super[] = "<Super>";
 362   static const gchar text_hyper[] = "<Hyper>";
 363   guint l;
 364   gchar *keyval_name;
 365   gchar *accelerator;
 366
 367   accelerator_mods &= EGG_VIRTUAL_MODIFIER_MASK;
 368
 369   keyval_name = gdk_keyval_name (gdk_keyval_to_lower (accelerator_key));
 370   if (!keyval_name)
 371     keyval_name = "";
 372
 373   l = 0;
 374   if (accelerator_mods & EGG_VIRTUAL_RELEASE_MASK)
 375     l += sizeof (text_release) - 1;
 376   if (accelerator_mods & EGG_VIRTUAL_SHIFT_MASK)
 377     l += sizeof (text_shift) - 1;
 378   if (accelerator_mods & EGG_VIRTUAL_CONTROL_MASK)
 379     l += sizeof (text_control) - 1;
 380   if (accelerator_mods & EGG_VIRTUAL_ALT_MASK)
 381     l += sizeof (text_mod1) - 1;
 382   if (accelerator_mods & EGG_VIRTUAL_MOD2_MASK)
 383     l += sizeof (text_mod2) - 1;
 384   if (accelerator_mods & EGG_VIRTUAL_MOD3_MASK)
 385     l += sizeof (text_mod3) - 1;
 386   if (accelerator_mods & EGG_VIRTUAL_MOD4_MASK)
 387     l += sizeof (text_mod4) - 1;
 388   if (accelerator_mods & EGG_VIRTUAL_MOD5_MASK)
 389     l += sizeof (text_mod5) - 1;
 390   if (accelerator_mods & EGG_VIRTUAL_META_MASK)
 391     l += sizeof (text_meta) - 1;
 392   if (accelerator_mods & EGG_VIRTUAL_HYPER_MASK)
 393     l += sizeof (text_hyper) - 1;
 394   if (accelerator_mods & EGG_VIRTUAL_SUPER_MASK)
 395     l += sizeof (text_super) - 1;
 396   l += strlen (keyval_name);
 397
 398   accelerator = g_new (gchar, l + 1);
 399
 400   l = 0;
 401   accelerator[l] = 0;
 402   if (accelerator_mods & EGG_VIRTUAL_RELEASE_MASK)
 403     {
 404       strcpy (accelerator + l, text_release);
 405       l += sizeof (text_release) - 1;
 406     }
 407   if (accelerator_mods & EGG_VIRTUAL_SHIFT_MASK)
 408     {
 409       strcpy (accelerator + l, text_shift);
 410       l += sizeof (text_shift) - 1;
 411     }
 412   if (accelerator_mods & EGG_VIRTUAL_CONTROL_MASK)
 413     {
 414       strcpy (accelerator + l, text_control);
 415       l += sizeof (text_control) - 1;
 416     }
 417   if (accelerator_mods & EGG_VIRTUAL_ALT_MASK)
 418     {
 419       strcpy (accelerator + l, text_mod1);
 420       l += sizeof (text_mod1) - 1;
 421     }
 422   if (accelerator_mods & EGG_VIRTUAL_MOD2_MASK)
 423     {
 424       strcpy (accelerator + l, text_mod2);
 425       l += sizeof (text_mod2) - 1;
 426     }
 427   if (accelerator_mods & EGG_VIRTUAL_MOD3_MASK)
 428     {
 429       strcpy (accelerator + l, text_mod3);
 430       l += sizeof (text_mod3) - 1;
 431     }
 432   if (accelerator_mods & EGG_VIRTUAL_MOD4_MASK)
 433     {
 434       strcpy (accelerator + l, text_mod4);
 435       l += sizeof (text_mod4) - 1;
 436     }
 437   if (accelerator_mods & EGG_VIRTUAL_MOD5_MASK)
 438     {
 439       strcpy (accelerator + l, text_mod5);
 440       l += sizeof (text_mod5) - 1;
 441     }
 442   if (accelerator_mods & EGG_VIRTUAL_META_MASK)
 443     {
 444       strcpy (accelerator + l, text_meta);
 445       l += sizeof (text_meta) - 1;
 446     }
 447   if (accelerator_mods & EGG_VIRTUAL_HYPER_MASK)
 448     {
 449       strcpy (accelerator + l, text_hyper);
 450       l += sizeof (text_hyper) - 1;
 451     }
 452   if (accelerator_mods & EGG_VIRTUAL_SUPER_MASK)
 453     {
 454       strcpy (accelerator + l, text_super);
 455       l += sizeof (text_super) - 1;
 456     }
 457
 458   strcpy (accelerator + l, keyval_name);
 459
 460   return accelerator;
 461 }
 462
 463 void
 464 egg_keymap_resolve_virtual_modifiers (GdkKeymap              *keymap,
 465                                       EggVirtualModifierType  virtual_mods,
 466                                       GdkModifierType        *concrete_mods)
 467 {
 468   GdkModifierType concrete;
 469   int i;
 470   const EggModmap *modmap;
 471
 472   g_return_if_fail (GDK_IS_KEYMAP (keymap));
 473   g_return_if_fail (concrete_mods != NULL);
 474
 475   modmap = egg_keymap_get_modmap (keymap);
 476
 477   /* Not so sure about this algorithm. */
 478
 479   concrete = 0;
 480   i = 0;
 481   while (i < EGG_MODMAP_ENTRY_LAST)
 482     {
 483       if (modmap->mapping[i] & virtual_mods)
 484         concrete |= (1 << i);
 485
 486       ++i;
 487     }
 488
 489   *concrete_mods = concrete;
 490 }
 491
 492 void
 493 egg_keymap_virtualize_modifiers (GdkKeymap              *keymap,
 494                                  GdkModifierType         concrete_mods,
 495                                  EggVirtualModifierType *virtual_mods)
 496 {
 497   GdkModifierType virtual;
 498   int i;
 499   const EggModmap *modmap;
 500
 501   g_return_if_fail (GDK_IS_KEYMAP (keymap));
 502   g_return_if_fail (virtual_mods != NULL);
 503
 504   modmap = egg_keymap_get_modmap (keymap);
 505
 506   /* Not so sure about this algorithm. */
 507
 508   virtual = 0;
 509   i = 0;
 510   while (i < EGG_MODMAP_ENTRY_LAST)
 511     {
 512       if ((1 << i) & concrete_mods)
 513         {
 514           EggVirtualModifierType cleaned;
 515
 516           cleaned = modmap->mapping[i] & ~(EGG_VIRTUAL_MOD2_MASK |
 517                                            EGG_VIRTUAL_MOD3_MASK |
 518                                            EGG_VIRTUAL_MOD4_MASK |
 519                                            EGG_VIRTUAL_MOD5_MASK);
 520
 521           if (cleaned != 0)
 522             {
 523               virtual |= cleaned;
 524             }
 525           else
 526             {
 527               /* Rather than dropping mod2->mod5 if not bound,
 528                * go ahead and use the concrete names
 529                */
 530               virtual |= modmap->mapping[i];
 531             }
 532         }
 533
 534       ++i;
 535     }
 536
 537   *virtual_mods = virtual;
 538 }
 539
 540 static void
 541 reload_modmap (GdkKeymap *keymap,
 542                EggModmap *modmap)
 543 {
 544   XModifierKeymap *xmodmap;
 545   int map_size;
 546   int i;
 547
 548   /* FIXME multihead */
 549   xmodmap = XGetModifierMapping (gdk_x11_get_default_xdisplay ());
 550
 551   memset (modmap->mapping, 0, sizeof (modmap->mapping));
 552
 553   /* there are 8 modifiers, and the first 3 are shift, shift lock,
 554    * and control
 555    */
 556   map_size = 8 * xmodmap->max_keypermod;
 557   i = 3 * xmodmap->max_keypermod;
 558   while (i < map_size)
 559     {
 560       /* get the key code at this point in the map,
 561        * see if its keysym is one we're interested in
 562        */
 563       int keycode = xmodmap->modifiermap[i];
 564       GdkKeymapKey *keys;
 565       guint *keyvals;
 566       int n_entries;
 567       int j;
 568       EggVirtualModifierType mask;
 569
 570       keys = NULL;
 571       keyvals = NULL;
 572       n_entries = 0;
 573
 574       gdk_keymap_get_entries_for_keycode (keymap,
 575                                           keycode,
 576                                           &keys, &keyvals, &n_entries);
 577
 578       mask = 0;
 579       j = 0;
 580       while (j < n_entries)
 581         {
 582           if (keyvals[j] == GDK_Num_Lock)
 583             mask |= EGG_VIRTUAL_NUM_LOCK_MASK;
 584           else if (keyvals[j] == GDK_Scroll_Lock)
 585             mask |= EGG_VIRTUAL_SCROLL_LOCK_MASK;
 586           else if (keyvals[j] == GDK_Meta_L ||
 587                    keyvals[j] == GDK_Meta_R)
 588             mask |= EGG_VIRTUAL_META_MASK;
 589           else if (keyvals[j] == GDK_Hyper_L ||
 590                    keyvals[j] == GDK_Hyper_R)
 591             mask |= EGG_VIRTUAL_HYPER_MASK;
 592           else if (keyvals[j] == GDK_Super_L ||
 593                    keyvals[j] == GDK_Super_R)
 594             mask |= EGG_VIRTUAL_SUPER_MASK;
 595           else if (keyvals[j] == GDK_Mode_switch)
 596             mask |= EGG_VIRTUAL_MODE_SWITCH_MASK;
 597
 598           ++j;
 599         }
 600
 601       /* Mod1Mask is 1 << 3 for example, i.e. the
 602        * fourth modifier, i / keyspermod is the modifier
 603        * index
 604        */
 605       modmap->mapping[i/xmodmap->max_keypermod] |= mask;
 606
 607       g_free (keyvals);
 608       g_free (keys);
 609
 610       ++i;
 611     }
 612
 613   /* Add in the not-really-virtual fixed entries */
 614   modmap->mapping[EGG_MODMAP_ENTRY_SHIFT] |= EGG_VIRTUAL_SHIFT_MASK;
 615   modmap->mapping[EGG_MODMAP_ENTRY_CONTROL] |= EGG_VIRTUAL_CONTROL_MASK;
 616   modmap->mapping[EGG_MODMAP_ENTRY_LOCK] |= EGG_VIRTUAL_LOCK_MASK;
 617   modmap->mapping[EGG_MODMAP_ENTRY_MOD1] |= EGG_VIRTUAL_ALT_MASK;
 618   modmap->mapping[EGG_MODMAP_ENTRY_MOD2] |= EGG_VIRTUAL_MOD2_MASK;
 619   modmap->mapping[EGG_MODMAP_ENTRY_MOD3] |= EGG_VIRTUAL_MOD3_MASK;
 620   modmap->mapping[EGG_MODMAP_ENTRY_MOD4] |= EGG_VIRTUAL_MOD4_MASK;
 621   modmap->mapping[EGG_MODMAP_ENTRY_MOD5] |= EGG_VIRTUAL_MOD5_MASK;
 622
 623   XFreeModifiermap (xmodmap);
 624 }
 625
 626 const EggModmap*
 627 egg_keymap_get_modmap (GdkKeymap *keymap)
 628 {
 629   EggModmap *modmap;
 630
 631   /* This is all a hack, much simpler when we can just
 632    * modify GDK directly.
 633    */
 634
 635   modmap = g_object_get_data (G_OBJECT (keymap),
 636                               "egg-modmap");
 637
 638   if (modmap == NULL)
 639     {
 640       modmap = g_new0 (EggModmap, 1);
 641
 642       /* FIXME modify keymap change events with an event filter
 643        * and force a reload if we get one
 644        */
 645
 646       reload_modmap (keymap, modmap);
 647
 648       g_object_set_data_full (G_OBJECT (keymap),
 649                               "egg-modmap",
 650                               modmap,
 651                               g_free);
 652     }
 653
 654   g_assert (modmap != NULL);
 655
 656   return modmap;
 657 }