1 files changed, 79 insertions, 0 deletions
diff --git a/plugins/common/gsd-input-helper.c b/plugins/common/gsd-input-helper.c
new file mode 100644
index 0000000..d806ccf
--- /dev/null
+++ b/plugins/common/gsd-input-helper.c
@@ -0,0 +1,79 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2010 Bastien Nocera <hadess@hadess.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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <gdk/gdk.h>
+#include <gdk/gdkx.h>
+
+#include <sys/types.h>
+#include <X11/Xatom.h>
+#include <X11/extensions/XInput2.h>
+
+#include "gsd-input-helper.h"
+
+char *
+xdevice_get_device_node (int deviceid)
+{
+        Atom           prop;
+        Atom           act_type;
+        int            act_format;
+        unsigned long  nitems, bytes_after;
+        unsigned char *data;
+        char          *ret;
+
+        gdk_display_sync (gdk_display_get_default ());
+
+        prop = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "Device Node", False);
+        if (!prop)
+                return NULL;
+
+        gdk_x11_display_error_trap_push (gdk_display_get_default ());
+
+        if (!XIGetProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+                            deviceid, prop, 0, 1000, False,
+                            AnyPropertyType, &act_type, &act_format,
+                            &nitems, &bytes_after, &data) == Success) {
+                gdk_x11_display_error_trap_pop_ignored (gdk_display_get_default ());
+                return NULL;
+        }
+        if (gdk_x11_display_error_trap_pop (gdk_display_get_default ()))
+                goto out;
+
+        if (nitems == 0)
+                goto out;
+
+        if (act_type != XA_STRING)
+                goto out;
+
+        /* Unknown string format */
+        if (act_format != 8)
+                goto out;
+
+        ret = g_strdup ((char *) data);
+
+        XFree (data);
+        return ret;
+
+out:
+        XFree (data);
+        return NULL;
+}