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 ********************************************************/
27 #include "xkbcomp-priv.h"
33 InitVModInfo(VModInfo *info, struct xkb_keymap *keymap)
35 ClearVModInfo(info, keymap);
39 ClearVModInfo(VModInfo *info, struct xkb_keymap *keymap)
44 info->defined = info->available = 0;
46 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
47 if (keymap->vmod_names[i])
51 /***====================================================================***/
54 * Handle one entry in the virtualModifiers line (e.g. NumLock).
56 * @param stmt The statement specifying the name
57 * @param mergeMode Merge strategy (e.g. MERGE_OVERRIDE)
60 HandleVModDef(VModDef *stmt, struct xkb_keymap *keymap,
61 enum merge_mode mergeMode, VModInfo *info)
69 "Support for setting a value in a virtual_modifiers statement has been removed; "
73 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1) {
74 if (!(info->defined & bit)) {
81 if (!keymap->vmod_names[i])
84 if (!streq(keymap->vmod_names[i],
85 xkb_atom_text(keymap->ctx, stmt->name)))
88 info->available |= bit;
94 "Too many virtual modifiers defined (maximum %d)\n",
99 info->defined |= (1 << nextFree);
100 info->available |= (1 << nextFree);
102 keymap->vmod_names[nextFree] = xkb_atom_text(keymap->ctx, stmt->name);
107 * Returns the index of the given modifier in the keymap->vmod_names array.
109 * @param keymap Pointer to the xkb data structure.
110 * @param field The Atom of the modifier's name (e.g. Atom for LAlt)
111 * @param type Must be EXPR_TYPE_INT, otherwise return false.
112 * @param val_rtrn Set to the index of the modifier that matches.
114 * @return true on success, false otherwise. If false is returned, val_rtrn is
118 LookupVModIndex(const struct xkb_keymap *keymap, xkb_atom_t field,
119 enum expr_value_type type, xkb_mod_index_t *val_rtrn)
122 const char *name = xkb_atom_text(keymap->ctx, field);
124 if (type != EXPR_TYPE_INT)
127 /* For each named modifier, get the name and compare it to the one passed
128 * in. If we get a match, return the index of the modifier.
129 * The order of modifiers is the same as in the virtual_modifiers line in
130 * the xkb_types section.
132 for (i = 0; i < XkbNumVirtualMods; i++) {
133 if (keymap->vmod_names[i] && streq(keymap->vmod_names[i], name)) {
143 * Get the mask for the given (virtual or core) modifier and set
144 * val_rtrn.uval to the mask value.
146 * @param priv Pointer to xkb data structure.
147 * @param val_rtrn Member uval is set to the mask returned.
149 * @return true on success, false otherwise. If false is returned, val_rtrn is
153 LookupVModMask(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
154 enum expr_value_type type, xkb_mod_mask_t *val_rtrn)
158 if (LookupModMask(ctx, NULL, field, type, val_rtrn)) {
161 else if (LookupVModIndex(priv, field, type, &ndx)) {
162 *val_rtrn = (1 << (XkbNumModifiers + ndx));
170 ResolveVirtualModifier(ExprDef *def, struct xkb_keymap *keymap,
171 xkb_mod_index_t *ndx_rtrn, VModInfo *info)
176 if (def->op != EXPR_IDENT) {
178 "Cannot resolve virtual modifier: "
179 "found %s where a virtual modifier name was expected\n",
180 expr_op_type_to_string(def->op));
184 name = xkb_atom_text(keymap->ctx, def->value.str);
186 for (i = 0; i < XkbNumVirtualMods; i++) {
187 if ((info->available & (1 << i)) &&
188 streq_not_null(keymap->vmod_names[i], name)) {
195 "Cannot resolve virtual modifier: "
196 "\"%s\" was not previously declared\n", name);