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 ********************************************************/
30 InitVModInfo(VModInfo *info, struct xkb_keymap *keymap)
32 ClearVModInfo(info, keymap);
37 ClearVModInfo(VModInfo *info, struct xkb_keymap *keymap)
41 info->newlyDefined = info->defined = info->available = 0;
43 if (XkbcAllocNames(keymap, 0, 0) != Success)
46 if (XkbcAllocServerMap(keymap, 0, 0) != Success)
49 info->keymap = keymap;
50 if (keymap && keymap->names)
53 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
55 if (keymap->names->vmods[i] != NULL)
61 /***====================================================================***/
64 * Handle one entry in the virtualModifiers line (e.g. NumLock).
65 * If the entry is e.g. NumLock=Mod1, stmt->value is not NULL, and the
66 * XkbServerMap's vmod is set to the given modifier. Otherwise, the vmod is 0.
68 * @param stmt The statement specifying the name and (if any the value).
69 * @param mergeMode Merge strategy (e.g. MergeOverride)
72 HandleVModDef(VModDef *stmt, struct xkb_keymap *keymap, unsigned mergeMode,
77 struct xkb_server_map *srv = keymap->server;
78 struct xkb_names *names = keymap->names;
80 for (i = 0, bit = 1, nextFree = -1; i < XkbNumVirtualMods; i++, bit <<= 1)
82 if (info->defined & bit)
84 if (names->vmods[i] &&
85 strcmp(names->vmods[i],
86 xkb_atom_text(keymap->ctx, stmt->name)) == 0)
87 { /* already defined */
88 info->available |= bit;
89 if (stmt->value == NULL)
94 const char *str2 = "";
95 if (!ExprResolveModMask(keymap->ctx, stmt->value, &mod))
97 str1 = xkb_atom_text(keymap->ctx, stmt->name);
98 ACTION("Declaration of %s ignored\n", str1);
101 if (mod.uval == srv->vmods[i])
104 str1 = xkb_atom_text(keymap->ctx, stmt->name);
105 WARN("Virtual modifier %s multiply defined\n", str1);
106 str1 = XkbcModMaskText(srv->vmods[i], true);
107 if (mergeMode == MergeOverride)
110 str1 = XkbcModMaskText(mod.uval, true);
112 ACTION("Using %s, ignoring %s\n", str1, str2);
113 if (mergeMode == MergeOverride)
114 srv->vmods[i] = mod.uval;
119 else if (nextFree < 0)
124 ERROR("Too many virtual modifiers defined (maximum %d)\n",
128 info->defined |= (1 << nextFree);
129 info->newlyDefined |= (1 << nextFree);
130 info->available |= (1 << nextFree);
131 names->vmods[nextFree] = xkb_atom_strdup(keymap->ctx, stmt->name);
132 if (stmt->value == NULL)
134 if (ExprResolveModMask(keymap->ctx, stmt->value, &mod))
136 srv->vmods[nextFree] = mod.uval;
139 ACTION("Declaration of %s ignored\n", xkb_atom_text(keymap->ctx, stmt->name));
144 * Returns the index of the given modifier in the keymap->names->vmods array.
146 * @param keymap Pointer to the xkb data structure.
147 * @param field The Atom of the modifier's name (e.g. Atom for LAlt)
148 * @param type Must be TypeInt, otherwise return false.
149 * @param val_rtrn Set to the index of the modifier that matches.
151 * @return true on success, false otherwise. If false is returned, val_rtrn is
155 LookupVModIndex(const struct xkb_keymap *keymap, xkb_atom_t field,
156 unsigned type, ExprResult * val_rtrn)
159 const char *name = xkb_atom_text(keymap->ctx, field);
161 if ((keymap == NULL) || (keymap->names == NULL) || (type != TypeInt))
165 /* For each named modifier, get the name and compare it to the one passed
166 * in. If we get a match, return the index of the modifier.
167 * The order of modifiers is the same as in the virtual_modifiers line in
168 * the xkb_types section.
170 for (i = 0; i < XkbNumVirtualMods; i++)
172 if (keymap->names->vmods[i] &&
173 strcmp(keymap->names->vmods[i], name) == 0)
183 * Get the mask for the given (virtual or core) modifier and set
184 * val_rtrn.uval to the mask value.
186 * @param priv Pointer to xkb data structure.
187 * @param val_rtrn Member uval is set to the mask returned.
189 * @return true on success, false otherwise. If false is returned, val_rtrn is
193 LookupVModMask(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
194 unsigned type, ExprResult *val_rtrn)
196 if (LookupModMask(ctx, NULL, field, type, val_rtrn))
200 else if (LookupVModIndex(priv, field, type, val_rtrn))
202 unsigned ndx = val_rtrn->uval;
203 val_rtrn->uval = (1 << (XkbNumModifiers + ndx));
210 FindKeypadVMod(struct xkb_keymap *keymap)
215 name = xkb_atom_intern(keymap->ctx, "NumLock");
216 if ((keymap) && LookupVModIndex(keymap, name, TypeInt, &rtrn))
224 ResolveVirtualModifier(ExprDef *def, struct xkb_keymap *keymap,
225 ExprResult *val_rtrn, VModInfo *info)
227 struct xkb_names *names = keymap->names;
229 if (def->op == ExprIdent)
232 const char *name = xkb_atom_text(keymap->ctx, def->value.str);
233 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
235 if ((info->available & bit) && names->vmods[i] &&
236 strcmp(names->vmods[i], name) == 0)
243 if (ExprResolveInteger(keymap->ctx, def, val_rtrn))
245 if (val_rtrn->uval < XkbNumVirtualMods)
247 ERROR("Illegal virtual modifier %d (must be 0..%d inclusive)\n",
248 val_rtrn->uval, XkbNumVirtualMods - 1);