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_keymap * xkb)
41 ClearVModInfo(info, xkb);
46 ClearVModInfo(VModInfo * info, struct xkb_keymap * xkb)
50 info->newlyDefined = info->defined = info->available = 0;
52 if (XkbcAllocNames(xkb, XkbVirtualModNamesMask, 0) != Success)
55 if (XkbcAllocServerMap(xkb, XkbVirtualModsMask, 0) != Success)
59 if (xkb && xkb->names)
62 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
64 if (xkb->names->vmods[i] != NULL)
70 /***====================================================================***/
73 * Handle one entry in the virtualModifiers line (e.g. NumLock).
74 * If the entry is e.g. NumLock=Mod1, stmt->value is not NULL, and the
75 * XkbServerMap's vmod is set to the given modifier. Otherwise, the vmod is 0.
77 * @param stmt The statement specifying the name and (if any the value).
78 * @param mergeMode Merge strategy (e.g. MergeOverride)
81 HandleVModDef(VModDef * stmt, struct xkb_keymap *xkb, unsigned mergeMode,
86 struct xkb_server_map * srv;
87 struct xkb_names * names;
91 for (i = 0, bit = 1, nextFree = -1; i < XkbNumVirtualMods; i++, bit <<= 1)
93 if (info->defined & bit)
95 if (names->vmods[i] &&
96 strcmp(names->vmods[i], XkbcAtomText(stmt->name)) == 0)
97 { /* already defined */
98 info->available |= bit;
99 if (stmt->value == NULL)
104 const char *str2 = "";
105 if (!ExprResolveModMask(stmt->value, &mod))
107 str1 = XkbcAtomText(stmt->name);
108 ACTION("Declaration of %s ignored\n", str1);
111 if (mod.uval == srv->vmods[i])
114 str1 = XkbcAtomText(stmt->name);
115 WARN("Virtual modifier %s multiply defined\n", str1);
116 str1 = XkbcModMaskText(srv->vmods[i], true);
117 if (mergeMode == MergeOverride)
120 str1 = XkbcModMaskText(mod.uval, true);
122 ACTION("Using %s, ignoring %s\n", str1, str2);
123 if (mergeMode == MergeOverride)
124 srv->vmods[i] = mod.uval;
129 else if (nextFree < 0)
134 ERROR("Too many virtual modifiers defined (maximum %d)\n",
138 info->defined |= (1 << nextFree);
139 info->newlyDefined |= (1 << nextFree);
140 info->available |= (1 << nextFree);
141 names->vmods[nextFree] = XkbcAtomGetString(stmt->name);
142 if (stmt->value == NULL)
144 if (ExprResolveModMask(stmt->value, &mod))
146 srv->vmods[nextFree] = mod.uval;
149 ACTION("Declaration of %s ignored\n", XkbcAtomText(stmt->name));
154 * Returns the index of the given modifier in the xkb->names->vmods array.
156 * @param priv Pointer to the xkb data structure.
157 * @param field The Atom of the modifier's name (e.g. Atom for LAlt)
158 * @param type Must be TypeInt, otherwise return false.
159 * @param val_rtrn Set to the index of the modifier that matches.
161 * @return true on success, false otherwise. If false is returned, val_rtrn is
165 LookupVModIndex(const struct xkb_keymap *xkb, xkb_atom_t field, unsigned type,
166 ExprResult * val_rtrn)
169 const char *name = XkbcAtomText(field);
171 if ((xkb == NULL) || (xkb->names == NULL) || (type != TypeInt))
175 /* For each named modifier, get the name and compare it to the one passed
176 * in. If we get a match, return the index of the modifier.
177 * The order of modifiers is the same as in the virtual_modifiers line in
178 * the xkb_types section.
180 for (i = 0; i < XkbNumVirtualMods; i++)
182 if (xkb->names->vmods[i] && strcmp(xkb->names->vmods[i], name) == 0)
192 * Get the mask for the given (virtual or core) modifier and set
193 * val_rtrn.uval to the mask value.
195 * @param priv Pointer to xkb data structure.
196 * @param val_rtrn Member uval is set to the mask returned.
198 * @return true on success, false otherwise. If false is returned, val_rtrn is
202 LookupVModMask(const void * priv, xkb_atom_t field, unsigned type,
203 ExprResult * val_rtrn)
205 if (LookupModMask(NULL, field, type, val_rtrn))
209 else if (LookupVModIndex(priv, field, type, val_rtrn))
211 unsigned ndx = val_rtrn->uval;
212 val_rtrn->uval = (1 << (XkbNumModifiers + ndx));
219 FindKeypadVMod(struct xkb_keymap * xkb)
224 name = xkb_intern_atom("NumLock");
225 if ((xkb) && LookupVModIndex(xkb, name, TypeInt, &rtrn))
233 ResolveVirtualModifier(ExprDef * def, struct xkb_keymap *xkb,
234 ExprResult * val_rtrn, VModInfo * info)
236 struct xkb_names * names;
239 if (def->op == ExprIdent)
242 const char *name = XkbcAtomText(def->value.str);
243 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
245 if ((info->available & bit) && names->vmods[i] &&
246 strcmp(names->vmods[i], name) == 0)
253 if (ExprResolveInteger(def, val_rtrn))
255 if (val_rtrn->uval < XkbNumVirtualMods)
257 ERROR("Illegal virtual modifier %d (must be 0..%d inclusive)\n",
258 val_rtrn->uval, XkbNumVirtualMods - 1);