/* This function enables and disables the Ctrl-Alt-KP_star and
Ctrl-Alt-KP_slash hot-keys, which (in XFree86 4.2) break any
grabs and/or kill the grabbing client. That would effectively
unlock the screen, so we don't like that.
The Ctrl-Alt-KP_star and Ctrl-Alt-KP_slash hot-keys only exist
if AllowDeactivateGrabs and/or AllowClosedownGrabs are turned on
in XF86Config. I believe they are disabled by default.
This does not affect any other keys (specifically Ctrl-Alt-BS or
Ctrl-Alt-F1) but I wish it did. Maybe it will someday.
*/
static void
xorg_lock_smasher_set_active (GSGrab *grab,
gboolean active)
{
int status, event, error;
#if GTK_CHECK_VERSION (3, 0, 0)
if (!XF86MiscQueryExtension (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), &event, &error))
#else
if (!XF86MiscQueryExtension (GDK_DISPLAY (), &event, &error))
#endif
{
gs_debug ("No XFree86-Misc extension present");
return;
}
if (active)
{
gs_debug ("Enabling the x.org grab smasher");
}
else
{
gs_debug ("Disabling the x.org grab smasher");
}
gdk_error_trap_push ();
#if GTK_CHECK_VERSION (3, 0, 0)
status = XF86MiscSetGrabKeysState (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), active);
#else
status = XF86MiscSetGrabKeysState (GDK_DISPLAY (), active);
#endif
gdk_display_sync (gdk_display_get_default ());
gdk_error_trap_pop ();
if (active && status == MiscExtGrabStateAlready)
{
/* shut up, consider this success */
status = MiscExtGrabStateSuccess;
}
gs_debug ("XF86MiscSetGrabKeysState(%s) returned %s\n",
active ? "on" : "off",
(status == MiscExtGrabStateSuccess ? "MiscExtGrabStateSuccess" :
status == MiscExtGrabStateLocked ? "MiscExtGrabStateLocked" :
status == MiscExtGrabStateAlready ? "MiscExtGrabStateAlready" :
"unknown value"));
}
/* This function enables and disables the Ctrl-Alt-KP_star and
Ctrl-Alt-KP_slash hot-keys, which (in XFree86 4.2) break any
grabs and/or kill the grabbing client. That would effectively
unlock the screen, so we don't like that.
The Ctrl-Alt-KP_star and Ctrl-Alt-KP_slash hot-keys only exist
if AllowDeactivateGrabs and/or AllowClosedownGrabs are turned on
in XF86Config. I believe they are disabled by default.
This does not affect any other keys (specifically Ctrl-Alt-BS or
Ctrl-Alt-F1) but I wish it did. Maybe it will someday.
*/
static void
xfree_lock_grab_smasher (saver_info *si, Bool lock_p)
{
saver_preferences *p = &si->prefs;
int status;
int event, error;
XErrorHandler old_handler;
if (!XF86MiscQueryExtension(si->dpy, &event, &error))
return;
XSync (si->dpy, False);
error_handler_hit_p = False;
old_handler = XSetErrorHandler (ignore_all_errors_ehandler);
XSync (si->dpy, False);
status = XF86MiscSetGrabKeysState (si->dpy, !lock_p);
XSync (si->dpy, False);
if (error_handler_hit_p) status = 666;
if (!lock_p && status == MiscExtGrabStateAlready)
status = MiscExtGrabStateSuccess; /* shut up, consider this success */
if (p->verbose_p && status != MiscExtGrabStateSuccess)
fprintf (stderr, "%s: error: XF86MiscSetGrabKeysState(%d) returned %s\n",
blurb(), !lock_p,
(status == MiscExtGrabStateSuccess ? "MiscExtGrabStateSuccess" :
status == MiscExtGrabStateLocked ? "MiscExtGrabStateLocked" :
status == MiscExtGrabStateAlready ? "MiscExtGrabStateAlready" :
status == 666 ? "an X error" :
"unknown value"));
XSync (si->dpy, False);
XSetErrorHandler (old_handler);
XSync (si->dpy, False);
}
