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Diffstat (limited to 'nx-X11/lib/src/ModMap.c')
| -rw-r--r-- | nx-X11/lib/src/ModMap.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/nx-X11/lib/src/ModMap.c b/nx-X11/lib/src/ModMap.c new file mode 100644 index 000000000..ca15dde25 --- /dev/null +++ b/nx-X11/lib/src/ModMap.c @@ -0,0 +1,184 @@ +/* + +Copyright 1986, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + +*/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "Xlibint.h" +#include <limits.h> + +XModifierKeymap * +XGetModifierMapping(register Display *dpy) +{ + xGetModifierMappingReply rep; + _X_UNUSED register xReq *req; + unsigned long nbytes; + XModifierKeymap *res; + + LockDisplay(dpy); + GetEmptyReq(GetModifierMapping, req); + (void) _XReply (dpy, (xReply *)&rep, 0, xFalse); + + if (rep.length < (INT_MAX >> 2) && + (rep.length >> 1) == rep.numKeyPerModifier) { + nbytes = (unsigned long)rep.length << 2; + res = Xmalloc(sizeof (XModifierKeymap)); + if (res) + res->modifiermap = Xmalloc (nbytes); + } else + res = NULL; + if ((! res) || (! res->modifiermap)) { + Xfree(res); + res = (XModifierKeymap *) NULL; + _XEatDataWords(dpy, rep.length); + } else { + _XReadPad(dpy, (char *) res->modifiermap, (long) nbytes); + res->max_keypermod = rep.numKeyPerModifier; + } + + UnlockDisplay(dpy); + SyncHandle(); + return (res); +} + +/* + * Returns: + * MappingSuccess (0) Success + * MappingBusy (1) Busy - one or more old or new modifiers are down + * MappingFailed (2) Failed - one or more new modifiers unacceptable + */ +int +XSetModifierMapping( + register Display *dpy, + register XModifierKeymap *modifier_map) +{ + register xSetModifierMappingReq *req; + xSetModifierMappingReply rep; + int mapSize = modifier_map->max_keypermod << 3; /* 8 modifiers */ + + LockDisplay(dpy); + GetReq(SetModifierMapping, req); + req->length += mapSize >> 2; + req->numKeyPerModifier = modifier_map->max_keypermod; + + Data(dpy, (const char *)modifier_map->modifiermap, mapSize); + + (void) _XReply(dpy, (xReply *) & rep, + (SIZEOF(xSetModifierMappingReply) - SIZEOF(xReply)) >> 2, xTrue); + UnlockDisplay(dpy); + SyncHandle(); + return (rep.success); +} + +XModifierKeymap * +XNewModifiermap(int keyspermodifier) +{ + XModifierKeymap *res = Xmalloc((sizeof (XModifierKeymap))); + if (res) { + res->max_keypermod = keyspermodifier; + res->modifiermap = (keyspermodifier > 0 ? + Xmalloc(8 * keyspermodifier) + : (KeyCode *) NULL); + if (keyspermodifier && (res->modifiermap == NULL)) { + Xfree(res); + return (XModifierKeymap *) NULL; + } + } + return (res); +} + + +int +XFreeModifiermap(XModifierKeymap *map) +{ + if (map) { + Xfree(map->modifiermap); + Xfree(map); + } + return 1; +} + +XModifierKeymap * +XInsertModifiermapEntry(XModifierKeymap *map, +#if NeedWidePrototypes + unsigned int keycode, +#else + KeyCode keycode, +#endif + int modifier) +{ + XModifierKeymap *newmap; + int i, + row = modifier * map->max_keypermod, + newrow, + lastrow; + + for (i=0; i<map->max_keypermod; i++) { + if (map->modifiermap[ row+i ] == keycode) + return(map); /* already in the map */ + if (map->modifiermap[ row+i ] == 0) { + map->modifiermap[ row+i ] = keycode; + return(map); /* we added it without stretching the map */ + } + } + + /* stretch the map */ + if ((newmap = XNewModifiermap(map->max_keypermod+1)) == NULL) + return (XModifierKeymap *) NULL; + newrow = row = 0; + lastrow = newmap->max_keypermod * 8; + while (newrow < lastrow) { + for (i=0; i<map->max_keypermod; i++) + newmap->modifiermap[ newrow+i ] = map->modifiermap[ row+i ]; + newmap->modifiermap[ newrow+i ] = 0; + row += map->max_keypermod; + newrow += newmap->max_keypermod; + } + (void) XFreeModifiermap(map); + newrow = newmap->max_keypermod * modifier + newmap->max_keypermod - 1; + newmap->modifiermap[ newrow ] = keycode; + return(newmap); +} + +XModifierKeymap * +XDeleteModifiermapEntry(XModifierKeymap *map, +#if NeedWidePrototypes + unsigned int keycode, +#else + KeyCode keycode, +#endif + int modifier) +{ + int i, + row = modifier * map->max_keypermod; + + for (i=0; i<map->max_keypermod; i++) { + if (map->modifiermap[ row+i ] == keycode) + map->modifiermap[ row+i ] = 0; + } + /* should we shrink the map?? */ + return (map); +} |