1 files changed, 108 insertions, 0 deletions
diff --git a/plugins/common/msd-input-helper.c b/plugins/common/msd-input-helper.c
new file mode 100644
index 0000000..5043e35
--- /dev/null
+++ b/plugins/common/msd-input-helper.c
@@ -0,0 +1,108 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2010 Bastien Nocera <[email protected]>
+ *
+ * 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 <gdk/gdk.h>
+#include <gdk/gdkx.h>
+
+#include <sys/types.h>
+#include <X11/Xatom.h>
+
+#include "msd-input-helper.h"
+
+static gboolean
+supports_xinput_devices (void)
+{
+ gint op_code, event, error;
+
+ return XQueryExtension (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+ "XInputExtension",
+ &op_code,
+ &event,
+ &error);
+}
+
+XDevice*
+device_is_touchpad (XDeviceInfo deviceinfo)
+{
+ XDevice *device;
+ Atom realtype, prop;
+ int realformat;
+ unsigned long nitems, bytes_after;
+ unsigned char *data;
+
+ if (deviceinfo.type != XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), XI_TOUCHPAD, False))
+ return NULL;
+
+ prop = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "Synaptics Off", False);
+ if (!prop)
+ return NULL;
+
+ gdk_error_trap_push ();
+ device = XOpenDevice (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), deviceinfo.id);
+ if (gdk_error_trap_pop () || (device == NULL))
+ return NULL;
+
+ gdk_error_trap_push ();
+ if ((XGetDeviceProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), device, prop, 0, 1, False,
+ XA_INTEGER, &realtype, &realformat, &nitems,
+ &bytes_after, &data) == Success) && (realtype != None)) {
+ gdk_error_trap_pop ();
+ XFree (data);
+ return device;
+ }
+ gdk_error_trap_pop ();
+
+ XCloseDevice (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), device);
+ return NULL;
+}
+
+gboolean
+touchpad_is_present (void)
+{
+ XDeviceInfo *device_info;
+ gint n_devices;
+ guint i;
+ gboolean retval;
+
+ if (supports_xinput_devices () == FALSE)
+ return TRUE;
+
+ retval = FALSE;
+
+ device_info = XListInputDevices (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), &n_devices);
+ if (device_info == NULL)
+ return FALSE;
+
+ for (i = 0; i < n_devices; i++) {
+ XDevice *device;
+
+ device = device_is_touchpad (device_info[i]);
+ if (device != NULL) {
+ retval = TRUE;
+ break;
+ }
+ }
+ if (device_info != NULL)
+ XFreeDeviceList (device_info);
+
+ return retval;
+}