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/* GDM - The GNOME Display Manager
* Copyright (C) 1998, 1999, 2000 Martin K. Petersen <mkp@mkp.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <gdk/gdkkeysyms.h>
#include <string.h>
#include <gdk/gdkx.h>
#include <X11/XKBlib.h>
#include "greeter_parser.h"
#include "greeter_item_capslock.h"
static gboolean caps_lock_state = FALSE;
static Display *
get_parent_display (void)
{
static gboolean tested = FALSE;
static Display *dsp = NULL;
if (tested)
return dsp;
tested = TRUE;
if (g_getenv ("GDM_PARENT_DISPLAY") != NULL)
{
char *old_xauth = g_strdup (g_getenv ("XAUTHORITY"));
if (g_getenv ("GDM_PARENT_XAUTHORITY") != NULL)
{
g_setenv ("XAUTHORITY",
g_getenv ("GDM_PARENT_XAUTHORITY"), TRUE);
}
dsp = XOpenDisplay (g_getenv ("GDM_PARENT_DISPLAY"));
if (old_xauth != NULL)
g_setenv ("XAUTHORITY", old_xauth, TRUE);
else
g_unsetenv ("XAUTHORITY");
g_free (old_xauth);
}
return dsp;
}
gboolean
greeter_is_capslock_on (void)
{
XkbStateRec states;
Display *dsp;
/* HACK! incredible hack, if this is set we get
* indicator state from the parent display, since we must be inside an
* Xnest */
dsp = get_parent_display ();
if (dsp == NULL)
dsp = GDK_DISPLAY ();
if (XkbGetState (dsp, XkbUseCoreKbd, &states) != Success)
return FALSE;
return (states.locked_mods & LockMask) != 0;
}
static void
capslock_update (gboolean new_state)
{
GreeterItemInfo *info;
GnomeCanvasItem *item;
caps_lock_state = new_state;
info = greeter_lookup_id ("caps-lock-warning");
if (info)
{
if (info->group_item != NULL)
item = GNOME_CANVAS_ITEM (info->group_item);
else
item = info->item;
if (caps_lock_state)
{
gnome_canvas_item_show (item);
}
else
{
gnome_canvas_item_hide (item);
}
}
}
static gboolean
cl_key_press_event (GtkWidget *widget, GdkEventKey *key, gpointer data)
{
gboolean new_state;
new_state = greeter_is_capslock_on ();
if (new_state != caps_lock_state)
capslock_update (new_state);
return FALSE;
}
gboolean
greeter_item_capslock_setup (GtkWidget *window)
{
capslock_update (greeter_is_capslock_on ());
g_signal_connect (G_OBJECT (window), "key_press_event",
G_CALLBACK (cl_key_press_event), NULL);
return TRUE;
}
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