aboutsummaryrefslogtreecommitdiffstats
path: root/matchbox2/core/mb-wm-keys.c
blob: 7c321056dcc29a583d856530f529339fd4275593 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
#include "mb-wm.h"
#include <ctype.h> 		/* isalpha etc */

struct MBWMKeys /* FIXME: Probably do want to hide these here */
{
  MBWMList *bindings;  /* Always points to first binding */

  int MetaMask;
  int HyperMask;
  int SuperMask;
  int AltMask;
  int ModeMask;
  int NumLockMask;
  int ScrollLockMask;
  int lock_mask;

};

static Bool
keysym_needs_shift (MBWindowManager *wm, KeySym keysym)
{
  int    min_kc, max_kc, keycode, col;
  KeySym k;

  XDisplayKeycodes(wm->xdpy, &min_kc, &max_kc);

  for (keycode = min_kc; keycode <= max_kc; keycode++)
    for (col = 0;
	 (k = XKeycodeToKeysym (wm->xdpy, keycode, col)) != NoSymbol;
	 col++)
      if (k == keysym && col == 1)
	return True;

  return False;
}

static Bool
key_binding_set_grab (MBWindowManager *wm,
		      MBWMKeyBinding  *key,
		      Bool             ungrab)
{
  int ignored_mask = 0;

  MBWM_ASSERT (wm->keys != NULL);

  /* Needed to grab all Locked combo's too */
  while (ignored_mask < (int) wm->keys->lock_mask)
    {
      if (ignored_mask & ~(wm->keys->lock_mask))
	{
	  ++ignored_mask;
	  continue;
	}

      if (ungrab)
	{
	  MBWM_DBG("ungrabbing %i , %i",
		   XKeysymToKeycode(wm->xdpy, key->keysym),
		   key->modifier_mask);

	  XUngrabKey(wm->xdpy,
		     XKeysymToKeycode(wm->xdpy, key->keysym),
		     key->modifier_mask | ignored_mask,
		     wm->root_win->xwindow);
	}
      else
	{
	  int result;

	  mb_wm_util_trap_x_errors();

	  MBWM_DBG ("grabbing keycode: %i, keysym %li, mask: %i",
		   XKeysymToKeycode(wm->xdpy, key->keysym),
		   key->keysym,
		   key->modifier_mask | ignored_mask);

	  XGrabKey(wm->xdpy, XKeysymToKeycode(wm->xdpy, key->keysym),
		   key->modifier_mask | ignored_mask,
		   wm->root_win->xwindow, True, GrabModeAsync, GrabModeAsync);

	  result = mb_wm_util_untrap_x_errors();

	  if (result != Success)
	    {
	      if (result == BadAccess)
		mb_wm_util_warn ("Some other program is already using the key %s with modifiers %x as a binding\n",
				 (XKeysymToString(key->keysym)) ? XKeysymToString (key->keysym) : "unknown",
				 key->modifier_mask | ignored_mask );
	      else
		mb_wm_util_warn ("Unable to grab the key %s with modifiers %x as a binding\n",
				 (XKeysymToString(key->keysym)) ? XKeysymToString (key->keysym) : "unknown",
				 key->modifier_mask | ignored_mask );
	      return False;
	    }
	}

      ++ignored_mask;
    }

  return True;
}

void
mb_wm_keys_binding_remove_all (MBWindowManager    *wm)
{

}

void
mb_wm_keys_binding_remove (MBWindowManager    *wm,
			   MBWMKeyBinding     *binding)
{

  key_binding_set_grab (wm, binding, True);
}

MBWMKeyBinding*
mb_wm_keys_binding_add (MBWindowManager    *wm,
			KeySym              ks,
			int                 mask,
			MBWMKeyPressedFunc  press_func,
			MBWMKeyDestroyFunc  destroy_func,
			void               *userdata)
{
  MBWMKeyBinding *binding = NULL;
  MBWMKeys       *keys = wm->keys;

  MBWM_ASSERT (wm->keys != NULL);

  binding = mb_wm_util_malloc0(sizeof(MBWMKeyBinding));

  binding->keysym        = ks;
  binding->modifier_mask = mask;
  binding->pressed       = press_func;
  binding->destroy       = destroy_func;
  binding->userdata      = userdata;

  if (key_binding_set_grab (wm, binding, False))
    {
      keys->bindings = mb_wm_util_list_append(keys->bindings, binding);
      return binding;
    }

  /* Grab failed */
  free(binding);
  return NULL;
}

MBWMKeyBinding*
mb_wm_keys_binding_add_with_spec (MBWindowManager    *wm,
				  const char         *keystr,
				  MBWMKeyPressedFunc  press_func,
				  MBWMKeyDestroyFunc  destroy_func,
				  void               *userdata)
{
  char           *orig, *p, *q, *keydef = NULL;
  int             i = 0, mask = 0;
  Bool            want_shift = False;
  KeySym          ks;
  MBWMKeys       *keys = wm->keys;
  MBWMKeyBinding *binding = NULL;

  struct { char *def; int mask; } lookup[] =
    {
      { "ctrl", ControlMask },
      { "alt",  keys->AltMask },
      { "meta", keys->MetaMask },
      { "super",keys->SuperMask },
      { "hyper",keys->HyperMask },
      { "mod1", Mod1Mask },
      { "mod2", Mod2Mask },
      { "mod3", Mod3Mask },
      { "mod4", Mod4Mask },
      { "mod5", Mod5Mask },
      { "shift",-1 },
      { NULL, 0 }
    };

  orig = p = strdup(keystr);

  /* parse '<mod><mod><mod>key' */

  while (*p != '\0')
    {
      Bool found = False;

      if (*p == '<')
	{
	  q = ++p; i = 0;

	  while (*q != '\0' && *q != '>')
	    q++;

	  if (*q == '\0')
	    goto out; /* Parse error */

	  while (lookup[i].def != NULL && !found)
	    {
	      if (!strncasecmp(p, lookup[i].def, q-p) && lookup[i].mask)
		{
		  if (lookup[i].mask == -1)
		    want_shift = True;
		  else
		    mask |= lookup[i].mask;
		  found = True;
		}
	      i++;
	    }

	  if (found)
	      p = q;
	  else
	    goto out;
	}
      else if (!isspace(*p))
	{
	  keydef = p;
	  break;
	}

      p++;
    }

  if (!keydef)
    goto out;

  MBWM_DBG("keydefinition is %s, want_shift is %i", keydef, want_shift);

  if ((ks = XStringToKeysym(keydef)) == (KeySym)NULL)
    {
      if (islower(keydef[0]))          /* Try again, changing case */
	keydef[0] = toupper(keydef[0]);
      else
	keydef[0] = tolower(keydef[0]);

      if ((ks = XStringToKeysym(keydef)) == (KeySym)NULL)
	{
	  mb_wm_util_warn ("Cant find keysym for %s", keydef);
	  goto out;
	}
    }

  if (keysym_needs_shift(wm, ks) || want_shift)
    mask |= ShiftMask;

  /* If we grab keycode 0, we end up grabbing the entire keyboard.. */
  if (XKeysymToKeycode(wm->xdpy, ks) == 0 && mask == 0)
    {
      MBWM_DBG("Cant find a keycode for keysym %li", ks);
      goto out;
    }

  binding = mb_wm_keys_binding_add (wm, ks, mask,
				    press_func, destroy_func, userdata);

 out:

  free (orig);
  return binding;
}

void 				/* FIXME: rename */
mb_wm_keys_press (MBWindowManager *wm,
		  KeySym           keysym,
		  int              modifier_mask)
{
  MBWMList       *iter;
  MBWMKeyBinding *binding;

  if (!wm->keys)
    return;

  MBWM_DBG ("Looking up keysym <%li>, ( mask %i )", keysym, modifier_mask);

  iter = wm->keys->bindings;

  while (iter)
    {
      int ignored_mask = 0;

      binding = (MBWMKeyBinding*)iter->data;

      MBWM_DBG ("Checking up keysym <%li>, ( mask %i )",
	       binding->keysym,
	       binding->modifier_mask);

      /* FIXME: Assumes multiple bindings per key */
      while (ignored_mask < (int) wm->keys->lock_mask)
	{
	  if (ignored_mask & ~(wm->keys->lock_mask))
	    {
	      ++ignored_mask;
	      continue;
	    }

	  if (binding->pressed
	      && binding->keysym == keysym
	      && binding->modifier_mask|ignored_mask == modifier_mask)
	    {
	      binding->pressed(wm, binding, binding->userdata);
	      break;
	    }

	  ++ignored_mask;
	}

      iter = mb_wm_util_list_next(iter);
    }
}


Bool
mb_wm_keys_init(MBWindowManager *wm)
{
  int              mod_idx, mod_key, col, kpm;
  XModifierKeymap *mod_map;
  MBWMKeys        *keys;

  mod_map = XGetModifierMapping(wm->xdpy);

  keys = wm->keys = mb_wm_util_malloc0(sizeof(MBWMKeys));

  /* Figure out modifier masks */

  kpm = mod_map->max_keypermod;
  for (mod_idx = 0; mod_idx < 8; mod_idx++)
    for (mod_key = 0; mod_key < kpm; mod_key++)
      {
	KeySym last_sym = 0;
	for (col = 0; col < 4; col += 2)
	  {
	    KeyCode code = mod_map->modifiermap[mod_idx * kpm + mod_key];
	    KeySym sym = (code ? XKeycodeToKeysym(wm->xdpy, code, col) : 0);

	    if (sym == last_sym) continue;
	    last_sym = sym;

	    switch (sym)
	      {
	      case XK_Mode_switch:
		/* XXX store_modifier("Mode_switch", mode_bit); */
		break;
	      case XK_Meta_L:
	      case XK_Meta_R:
		keys->MetaMask |= (1 << mod_idx);
		break;
	      case XK_Super_L:
	      case XK_Super_R:
		keys->SuperMask |= (1 << mod_idx);
		break;
	      case XK_Hyper_L:
	      case XK_Hyper_R:
		keys->HyperMask |= (1 << mod_idx);
		break;
	      case XK_Alt_L:
	      case XK_Alt_R:
		keys->AltMask |= (1 << mod_idx);
		break;
	      case XK_Num_Lock:
		keys->NumLockMask |= (1 << mod_idx);
		break;
	      case XK_Scroll_Lock:
		keys->ScrollLockMask |= (1 << mod_idx);
		break;
	      }
	  }
      }

  /* XXX check this. assume alt <=> meta if only either set */
  if (!keys->AltMask)  keys->AltMask  = keys->MetaMask;
  if (!keys->MetaMask) keys->MetaMask = keys->AltMask;

  keys->lock_mask = keys->ScrollLockMask | keys->NumLockMask | LockMask;

  if (mod_map) XFreeModifiermap(mod_map);

  return True;
}