1 files changed, 90 insertions, 0 deletions
diff --git a/registryd/display.c b/registryd/display.c
new file mode 100644
index 0000000..2ba781c
--- /dev/null
+++ b/registryd/display.c
@@ -0,0 +1,90 @@
+/*
+ * 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 Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, 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;
+}