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"
32 InitVModInfo(VModInfo *info, struct xkb_keymap *keymap)
36 info->defined = info->available = 0;
38 for (i = 0; i < XkbNumVirtualMods; i++)
39 if (keymap->vmod_names[i])
40 info->defined |= (1 << i);
44 ClearVModInfo(VModInfo *info)
46 info->defined = info->available = 0;
49 /***====================================================================***/
52 * Handle one entry in the virtualModifiers line (e.g. NumLock).
54 * @param stmt The statement specifying the name
55 * @param mergeMode Merge strategy (e.g. MERGE_OVERRIDE)
58 HandleVModDef(VModDef *stmt, struct xkb_keymap *keymap,
59 enum merge_mode mergeMode, VModInfo *info)
67 "Support for setting a value in a virtual_modifiers statement has been removed; "
71 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1) {
72 if (!(info->defined & bit)) {
79 if (!keymap->vmod_names[i])
82 if (!streq(keymap->vmod_names[i],
83 xkb_atom_text(keymap->ctx, stmt->name)))
86 info->available |= bit;
92 "Too many virtual modifiers defined (maximum %d)\n",
97 info->defined |= (1 << nextFree);
98 info->available |= (1 << nextFree);
100 keymap->vmod_names[nextFree] = xkb_atom_text(keymap->ctx, stmt->name);
105 * Returns the index of the given modifier in the keymap->vmod_names array.
107 * @param keymap Pointer to the xkb data structure.
108 * @param field The Atom of the modifier's name (e.g. Atom for LAlt)
109 * @param type Must be EXPR_TYPE_INT, otherwise return false.
110 * @param val_rtrn Set to the index of the modifier that matches.
112 * @return true on success, false otherwise. If false is returned, val_rtrn is
116 LookupVModIndex(const struct xkb_keymap *keymap, xkb_atom_t field,
117 enum expr_value_type type, xkb_mod_index_t *val_rtrn)
120 const char *name = xkb_atom_text(keymap->ctx, field);
122 if (type != EXPR_TYPE_INT)
125 /* For each named modifier, get the name and compare it to the one passed
126 * in. If we get a match, return the index of the modifier.
127 * The order of modifiers is the same as in the virtual_modifiers line in
128 * the xkb_types section.
130 for (i = 0; i < XkbNumVirtualMods; i++) {
131 if (keymap->vmod_names[i] && streq(keymap->vmod_names[i], name)) {
141 * Get the mask for the given (virtual or core) modifier and set
142 * val_rtrn.uval to the mask value.
144 * @param priv Pointer to xkb data structure.
145 * @param val_rtrn Member uval is set to the mask returned.
147 * @return true on success, false otherwise. If false is returned, val_rtrn is
151 LookupVModMask(struct xkb_context *ctx, const void *priv, xkb_atom_t field,
152 enum expr_value_type type, xkb_mod_mask_t *val_rtrn)
156 if (LookupModMask(ctx, NULL, field, type, val_rtrn)) {
159 else if (LookupVModIndex(priv, field, type, &ndx)) {
160 *val_rtrn = (1 << (XkbNumModifiers + ndx));
168 ResolveVirtualModifier(ExprDef *def, struct xkb_keymap *keymap,
169 xkb_mod_index_t *ndx_rtrn, VModInfo *info)
174 if (def->op != EXPR_IDENT) {
176 "Cannot resolve virtual modifier: "
177 "found %s where a virtual modifier name was expected\n",
178 expr_op_type_to_string(def->op));
182 name = xkb_atom_text(keymap->ctx, def->value.str);
184 for (i = 0; i < XkbNumVirtualMods; i++) {
185 if ((info->available & (1 << i)) &&
186 streq_not_null(keymap->vmod_names[i], name)) {
193 "Cannot resolve virtual modifier: "
194 "\"%s\" was not previously declared\n", name);