1 /************************************************************
2 Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.
4 Permission to use, copy, modify, and distribute this
5 software and its documentation for any purpose and without
6 fee is hereby granted, provided that the above copyright
7 notice appear in all copies and that both that copyright
8 notice and this permission notice appear in supporting
9 documentation, and that the name of Silicon Graphics not be
10 used in advertising or publicity pertaining to distribution
11 of the software without specific prior written permission.
12 Silicon Graphics makes no representation about the suitability
13 of this software for any purpose. It is provided "as is"
14 without any express or implied warranty.
16 SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
17 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
18 AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
19 GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
20 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
22 OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
23 THE USE OR PERFORMANCE OF THIS SOFTWARE.
25 ********************************************************/
34 #include <X11/extensions/XKB.h>
39 InitVModInfo(VModInfo * info, struct xkb_desc * xkb)
41 ClearVModInfo(info, xkb);
46 ClearVModInfo(VModInfo * info, struct xkb_desc * xkb)
50 if (XkbcAllocNames(xkb, XkbVirtualModNamesMask, 0) != Success)
52 if (XkbcAllocServerMap(xkb, XkbVirtualModsMask, 0) != Success)
55 info->newlyDefined = info->defined = info->available = 0;
56 if (xkb && xkb->names)
59 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
61 if (xkb->names->vmods[i] != NULL)
67 /***====================================================================***/
70 * Handle one entry in the virtualModifiers line (e.g. NumLock).
71 * If the entry is e.g. NumLock=Mod1, stmt->value is not NULL, and the
72 * XkbServerMap's vmod is set to the given modifier. Otherwise, the vmod is 0.
74 * @param stmt The statement specifying the name and (if any the value).
75 * @param mergeMode Merge strategy (e.g. MergeOverride)
78 HandleVModDef(VModDef * stmt, struct xkb_desc *xkb, unsigned mergeMode,
83 struct xkb_server_map * srv;
84 struct xkb_names * names;
88 for (i = 0, bit = 1, nextFree = -1; i < XkbNumVirtualMods; i++, bit <<= 1)
90 if (info->defined & bit)
92 if (names->vmods[i] &&
93 strcmp(names->vmods[i], XkbcAtomText(stmt->name)) == 0)
94 { /* already defined */
95 info->available |= bit;
96 if (stmt->value == NULL)
101 const char *str2 = "";
102 if (!ExprResolveModMask(stmt->value, &mod))
104 str1 = XkbcAtomText(stmt->name);
105 ACTION("Declaration of %s ignored\n", str1);
108 if (mod.uval == srv->vmods[i])
111 str1 = XkbcAtomText(stmt->name);
112 WARN("Virtual modifier %s multiply defined\n", str1);
113 str1 = XkbcModMaskText(srv->vmods[i], True);
114 if (mergeMode == MergeOverride)
117 str1 = XkbcModMaskText(mod.uval, True);
119 ACTION("Using %s, ignoring %s\n", str1, str2);
120 if (mergeMode == MergeOverride)
121 srv->vmods[i] = mod.uval;
126 else if (nextFree < 0)
131 ERROR("Too many virtual modifiers defined (maximum %d)\n",
135 info->defined |= (1 << nextFree);
136 info->newlyDefined |= (1 << nextFree);
137 info->available |= (1 << nextFree);
138 names->vmods[nextFree] = XkbcAtomGetString(stmt->name);
139 if (stmt->value == NULL)
141 if (ExprResolveModMask(stmt->value, &mod))
143 srv->vmods[nextFree] = mod.uval;
146 ACTION("Declaration of %s ignored\n", XkbcAtomText(stmt->name));
151 * Returns the index of the given modifier in the xkb->names->vmods array.
153 * @param priv Pointer to the xkb data structure.
154 * @param field The Atom of the modifier's name (e.g. Atom for LAlt)
155 * @param type Must be TypeInt, otherwise return False.
156 * @param val_rtrn Set to the index of the modifier that matches.
158 * @return True on success, False otherwise. If False is returned, val_rtrn is
162 LookupVModIndex(const struct xkb_desc *xkb, xkb_atom_t field, unsigned type,
163 ExprResult * val_rtrn)
166 const char *name = XkbcAtomText(field);
168 if ((xkb == NULL) || (xkb->names == NULL) || (type != TypeInt))
172 /* For each named modifier, get the name and compare it to the one passed
173 * in. If we get a match, return the index of the modifier.
174 * The order of modifiers is the same as in the virtual_modifiers line in
175 * the xkb_types section.
177 for (i = 0; i < XkbNumVirtualMods; i++)
179 if (xkb->names->vmods[i] && strcmp(xkb->names->vmods[i], name) == 0)
189 * Get the mask for the given (virtual or core) modifier and set
190 * val_rtrn.uval to the mask value.
192 * @param priv Pointer to xkb data structure.
193 * @param val_rtrn Member uval is set to the mask returned.
195 * @return True on success, False otherwise. If False is returned, val_rtrn is
199 LookupVModMask(const void * priv, xkb_atom_t field, unsigned type,
200 ExprResult * val_rtrn)
202 if (LookupModMask(NULL, field, type, val_rtrn))
206 else if (LookupVModIndex(priv, field, type, val_rtrn))
208 unsigned ndx = val_rtrn->uval;
209 val_rtrn->uval = (1 << (XkbNumModifiers + ndx));
216 FindKeypadVMod(struct xkb_desc * xkb)
221 name = xkb_intern_atom("NumLock");
222 if ((xkb) && LookupVModIndex(xkb, name, TypeInt, &rtrn))
230 ResolveVirtualModifier(ExprDef * def, struct xkb_desc *xkb,
231 ExprResult * val_rtrn, VModInfo * info)
233 struct xkb_names * names;
236 if (def->op == ExprIdent)
239 const char *name = XkbcAtomText(def->value.str);
240 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
242 if ((info->available & bit) && strcmp(names->vmods[i], name) == 0)
249 if (ExprResolveInteger(def, val_rtrn))
251 if (val_rtrn->uval < XkbNumVirtualMods)
253 ERROR("Illegal virtual modifier %d (must be 0..%d inclusive)\n",
254 val_rtrn->uval, XkbNumVirtualMods - 1);