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 for (i = 0; i < XkbNumVirtualMods; i++)
44 keymap->vmods[i] = XkbNoModifierMask;
46 info->keymap = keymap;
47 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
48 if (keymap->vmod_names[i])
52 /***====================================================================***/
55 * Handle one entry in the virtualModifiers line (e.g. NumLock).
56 * If the entry is e.g. NumLock=Mod1, stmt->value is not NULL, and the
57 * XkbServerMap's vmod is set to the given modifier. Otherwise, the vmod is 0.
59 * @param stmt The statement specifying the name and (if any the value).
60 * @param mergeMode Merge strategy (e.g. MERGE_OVERRIDE)
63 HandleVModDef(VModDef *stmt, struct xkb_keymap *keymap,
64 enum merge_mode mergeMode,
70 for (i = 0, bit = 1, nextFree = -1; i < XkbNumVirtualMods; i++, bit <<=
72 if (info->defined & bit) {
73 if (keymap->vmod_names[i] &&
74 strcmp(keymap->vmod_names[i],
75 xkb_atom_text(keymap->ctx, stmt->name)) == 0) { /* already defined */
76 info->available |= bit;
77 if (stmt->value == NULL)
81 const char *str2 = "";
82 if (!ExprResolveModMask(keymap->ctx, stmt->value,
84 str1 = xkb_atom_text(keymap->ctx, stmt->name);
85 ACTION("Declaration of %s ignored\n", str1);
88 if (mod.uval == keymap->vmods[i])
91 str1 = xkb_atom_text(keymap->ctx, stmt->name);
92 WARN("Virtual modifier %s multiply defined\n", str1);
93 str1 = XkbcModMaskText(keymap->vmods[i], true);
94 if (mergeMode == MERGE_OVERRIDE) {
96 str1 = XkbcModMaskText(mod.uval, true);
98 ACTION("Using %s, ignoring %s\n", str1, str2);
99 if (mergeMode == MERGE_OVERRIDE)
100 keymap->vmods[i] = mod.uval;
105 else if (nextFree < 0)
109 ERROR("Too many virtual modifiers defined (maximum %d)\n",
113 info->defined |= (1 << nextFree);
114 info->newlyDefined |= (1 << nextFree);
115 info->available |= (1 << nextFree);
116 keymap->vmod_names[nextFree] = xkb_atom_strdup(keymap->ctx, stmt->name);
117 if (stmt->value == NULL)
119 if (ExprResolveModMask(keymap->ctx, stmt->value, &mod)) {
120 keymap->vmods[nextFree] = mod.uval;
123 ACTION("Declaration of %s ignored\n",
124 xkb_atom_text(keymap->ctx, stmt->name));
129 * Returns the index of the given modifier in the keymap->vmod_names array.
131 * @param keymap Pointer to the xkb data structure.
132 * @param field The Atom of the modifier's name (e.g. Atom for LAlt)
133 * @param type Must be TypeInt, otherwise return false.
134 * @param val_rtrn Set to the index of the modifier that matches.
136 * @return true on success, false otherwise. If false is returned, val_rtrn is
140 LookupVModIndex(const struct xkb_keymap *keymap, xkb_atom_t field,
141 unsigned type, ExprResult * val_rtrn)
144 const char *name = xkb_atom_text(keymap->ctx, field);
149 /* For each named modifier, get the name and compare it to the one passed
150 * in. If we get a match, return the index of the modifier.
151 * The order of modifiers is the same as in the virtual_modifiers line in
152 * the xkb_types section.
154 for (i = 0; i < XkbNumVirtualMods; i++)
155 if (keymap->vmod_names[i] &&
156 strcmp(keymap->vmod_names[i], name) == 0) {
165 * Get the mask for the given (virtual or core) modifier and set
166 * val_rtrn.uval to the mask value.
168 * @param priv Pointer to xkb data structure.
169 * @param val_rtrn Member uval is set to the mask returned.
171 * @return true on success, false otherwise. If false is returned, val_rtrn is
175 LookupVModMask(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
176 unsigned type, ExprResult *val_rtrn)
178 if (LookupModMask(ctx, NULL, field, type, val_rtrn)) {
181 else if (LookupVModIndex(priv, field, type, val_rtrn)) {
182 unsigned ndx = val_rtrn->uval;
183 val_rtrn->uval = (1 << (XkbNumModifiers + ndx));
190 FindKeypadVMod(struct xkb_keymap *keymap)
195 name = xkb_atom_intern(keymap->ctx, "NumLock");
196 if ((keymap) && LookupVModIndex(keymap, name, TypeInt, &rtrn)) {
203 ResolveVirtualModifier(ExprDef *def, struct xkb_keymap *keymap,
204 ExprResult *val_rtrn, VModInfo *info)
206 if (def->op == ExprIdent) {
208 const char *name = xkb_atom_text(keymap->ctx, def->value.str);
209 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1) {
210 if ((info->available & bit) && keymap->vmod_names[i] &&
211 strcmp(keymap->vmod_names[i], name) == 0) {
217 if (ExprResolveInteger(keymap->ctx, def, val_rtrn)) {
218 if (val_rtrn->uval < XkbNumVirtualMods)
220 ERROR("Illegal virtual modifier %d (must be 0..%d inclusive)\n",
221 val_rtrn->uval, XkbNumVirtualMods - 1);