ede/elma/NumLock.cpp

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/*
* $Id$
*
* ELMA, Ede Login MAnager
* Part of Equinox Desktop Environment (EDE).
*
* Based on SLiM (Simple Login Manager) numlock code by:
* Copyright (C) 2004-06 Simone Rota <sip@varlock.com>
* Copyright (C) 2004-06 Johannes Winkelmann <jw@tks6.net>
*
* which in turn they ripped from KDE and nicely provide authors
* so I'm doing that too:
*
* Copyright (C) 2000-2001 Lubos Lunak <l.lunak@kde.org>
* Copyright (C) 2001 Oswald Buddenhagen <ossi@kde.org>
*
* And for else, blame me (Sanel).
*
* This program is licensed under terms of the
* GNU General Public License version 2 or newer.
* See COPYING for details.
*/
#include "NumLock.h"
#include <X11/XKBlib.h>
#include <X11/keysym.h>
#include <string.h>
static unsigned int numlock_mask(Display* dpy) {
XkbDescPtr xkb = XkbGetKeyboard(dpy, XkbAllComponentsMask, XkbUseCoreKbd);
if(xkb == NULL)
return 0;
char* modstr;
unsigned int mask = 0;
for(int i = 0; i < XkbNumVirtualMods; i++) {
modstr = XGetAtomName(xkb->dpy, xkb->names->vmods[i]);
if(modstr != NULL && strcmp(modstr, "NumLock") == 0) {
XkbVirtualModsToReal(xkb, 1 << i, &mask);
break;
}
}
XkbFreeKeyboard(xkb, 0, True);
return mask;
}
bool numlock_xkb_init(Display* dpy) {
int opcode, event, error;
int maj, min;
return XkbLibraryVersion(&maj, &min) && XkbQueryExtension(dpy, &opcode, &event, &error, &maj, &min);
}
void numlock_on(Display* dpy) {
unsigned int mask = numlock_mask(dpy);
if(!mask)
return;
XkbLockModifiers(dpy, XkbUseCoreKbd, mask, mask);
}
void numlock_off(Display* dpy) {
unsigned int mask = numlock_mask(dpy);
if(!mask)
return;
XkbLockModifiers(dpy, XkbUseCoreKbd, mask, 0);
}