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 #define DEBUG_VAR debugFlags
36 #include <X11/extensions/XKB.h>
37 #include <X11/extensions/XKBstrcommon.h>
42 InitVModInfo(VModInfo * info, XkbcDescPtr xkb)
44 ClearVModInfo(info, xkb);
50 ClearVModInfo(VModInfo * info, XkbcDescPtr xkb)
54 if (XkbcAllocNames(xkb, XkbVirtualModNamesMask, 0, 0) != Success)
56 if (XkbcAllocServerMap(xkb, XkbVirtualModsMask, 0) != Success)
59 info->newlyDefined = info->defined = info->available = 0;
60 if (xkb && xkb->names)
63 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
65 if (xkb->names->vmods[i] != None)
72 /***====================================================================***/
75 * Handle one entry in the virtualModifiers line (e.g. NumLock).
76 * If the entry is e.g. NumLock=Mod1, stmt->value is not NULL, and the
77 * XkbServerMap's vmod is set to the given modifier. Otherwise, the vmod is 0.
79 * @param stmt The statement specifying the name and (if any the value).
80 * @param mergeMode Merge strategy (e.g. MergeOverride)
83 HandleVModDef(VModDef * stmt, unsigned mergeMode, VModInfo * info)
85 register int i, bit, nextFree;
90 srv = info->xkb->server;
91 names = info->xkb->names;
92 for (i = 0, bit = 1, nextFree = -1; i < XkbNumVirtualMods; i++, bit <<= 1)
94 if (info->defined & bit)
96 if (names->vmods[i] == stmt->name)
97 { /* already defined */
98 info->available |= bit;
99 if (stmt->value == NULL)
104 const char *str2 = "";
105 if (!ExprResolveModMask(stmt->value, &mod, NULL, NULL))
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] = stmt->name;
142 if (stmt->value == NULL)
144 if (ExprResolveModMask(stmt->value, &mod, NULL, NULL))
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 elem Must be None, otherwise return False.
158 * @param field The Atom of the modifier's name (e.g. Atom for LAlt)
159 * @param type Must be TypeInt, otherwise return False.
160 * @param val_rtrn Set to the index of the modifier that matches.
162 * @return True on success, False otherwise. If False is returned, val_rtrn is
166 LookupVModIndex(char * priv,
167 uint32_t elem, uint32_t field, unsigned type, ExprResult * val_rtrn)
172 xkb = (XkbcDescPtr) priv;
173 if ((xkb == NULL) || (xkb->names == NULL) || (elem != None)
174 || (type != TypeInt))
178 /* For each named modifier, get the name and compare it to the one passed
179 * in. If we get a match, return the index of the modifier.
180 * The order of modifiers is the same as in the virtual_modifiers line in
181 * the xkb_types section.
183 for (i = 0; i < XkbNumVirtualMods; i++)
185 if (xkb->names->vmods[i] == field)
195 * Get the mask for the given modifier and set val_rtrn.uval to the mask.
196 * Note that the mask returned is always > 512.
198 * @param priv Pointer to xkb data structure.
199 * @param val_rtrn Set to the mask returned.
201 * @return True on success, False otherwise. If False is returned, val_rtrn is
205 LookupVModMask(char * priv,
206 uint32_t elem, uint32_t field, unsigned type, ExprResult * val_rtrn)
208 if (LookupVModIndex(priv, elem, field, type, val_rtrn))
210 register unsigned ndx = val_rtrn->uval;
211 val_rtrn->uval = (1 << (XkbNumModifiers + ndx));
218 FindKeypadVMod(XkbcDescPtr xkb)
223 name = XkbcInternAtom("NumLock", False);
224 if ((xkb) && LookupVModIndex((char *) xkb, None, name, TypeInt, &rtrn))
232 ResolveVirtualModifier(ExprDef * def, ExprResult * val_rtrn, VModInfo * info)
236 names = info->xkb->names;
237 if (def->op == ExprIdent)
240 for (i = 0, bit = 1; i < XkbNumVirtualMods; i++, bit <<= 1)
242 if ((info->available & bit) && names->vmods[i] == def->value.str)
249 if (ExprResolveInteger(def, val_rtrn, NULL, NULL))
251 if (val_rtrn->uval < XkbNumVirtualMods)
253 ERROR("Illegal virtual modifier %d (must be 0..%d inclusive)\n",
254 val_rtrn->uval, XkbNumVirtualMods - 1);