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/*
* AT-SPI - Assistive Technology Service Provider Interface
* (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
*
* Copyright 2009 Nokia.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <glib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <X11/Xatom.h>
#include <stdio.h>
#include <stdlib.h>
#include "display.h"
static Display *default_display = NULL;
Display *spi_set_display (const char *display_name)
{
/*
* TODO - Should we ever do anything different might need to
* close previous display.
*/
default_display = XOpenDisplay (display_name);
if (!default_display)
{
g_warning ("AT-SPI: Cannot open default display");
exit (1);
}
return default_display;
}
Display *spi_get_display ()
{
if (!default_display)
spi_set_display (NULL);
return default_display;
}
Window spi_get_root_window ()
{
if (!default_display)
spi_set_display (NULL);
return DefaultRootWindow (default_display);
}
static int (*old_x_error_handler) (Display *, XErrorEvent *);
static int x_error_code;
static int spi_x_error_handler (Display *display, XErrorEvent *error)
{
if (error->error_code)
x_error_code = error->error_code;
else
x_error_code = 0;
return 0;
}
void spi_x_error_trap (void)
{
old_x_error_handler = XSetErrorHandler (spi_x_error_handler);
}
int spi_x_error_release (void)
{
XSetErrorHandler (old_x_error_handler);
return x_error_code;
}
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