Extend gnome-shell-extensions/xrandr-indicator with xsetwacom support

extension.js

diff --git a/extensions/xrandr-indicator/extension.js b/extensions/xrandr-indicator/extension.js
index 0a41ce7..0641fa9 100644
--- a/extensions/xrandr-indicator/extension.js
+++ b/extensions/xrandr-indicator/extension.js
@@ -33,6 +33,9 @@ let rotations = [ [ GnomeDesktop.RRRotation.ROTATION_0, N_("Normal") ],
                  [ GnomeDesktop.RRRotation.ROTATION_180, N_("Upside-down") ]
                ];
 
+let wacom_rotations = [ "none", "ccw", "cw","half" ];
+let wacom_devices = [ 14, 15, 16 ];
+
 const XRandr2Iface = {
     name: 'org.gnome.SettingsDaemon.XRANDR_2',
     methods: [
@@ -104,6 +107,11 @@ Indicator.prototype = {
                     config.save();
 
                     output.set_rotation(bitmask);
+
+                    // wacom support
+                    for (let w = 0; w < wacom_devices.length; w++)
+                        GLib.spawn_command_line_async('xsetwacom set ' + wacom_devices[w] + ' rotate ' + wacom_rotations[bitmask-1]);
+
                     try {
                         config.save();
                         this._proxy.ApplyConfigurationRemote(0, event.get_time());