Adding upstream version 43.0.upstream/43.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 1437 insertions, 0 deletions

diff --git a/plugins/wacom/gsd-wacom-manager.c b/plugins/wacom/gsd-wacom-manager.c
new file mode 100644
index 0000000..0364063
--- /dev/null
+++ b/plugins/wacom/gsd-wacom-manager.c
@@ -0,0 +1,528 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu>
+ * Copyright (C) 2010 Red Hat, Inc.
+ *
+ * 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 <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <locale.h>
+
+#include <gdk/gdk.h>
+
+#ifdef GDK_WINDOWING_WAYLAND
+#include <gdk/gdkwayland.h>
+#endif
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#if HAVE_WACOM
+#include <libwacom/libwacom.h>
+#endif
+
+#include "gsd-enums.h"
+#include "gnome-settings-profile.h"
+#include "gnome-settings-bus.h"
+#include "gsd-wacom-manager.h"
+#include "gsd-wacom-oled.h"
+#include "gsd-settings-migrate.h"
+#include "gsd-input-helper.h"
+
+
+#define UNKNOWN_DEVICE_NOTIFICATION_TIMEOUT 15000
+
+#define GSD_DBUS_NAME "org.gnome.SettingsDaemon"
+#define GSD_DBUS_PATH "/org/gnome/SettingsDaemon"
+#define GSD_DBUS_BASE_INTERFACE "org.gnome.SettingsDaemon"
+
+#define GSD_WACOM_DBUS_PATH GSD_DBUS_PATH "/Wacom"
+#define GSD_WACOM_DBUS_NAME GSD_DBUS_NAME ".Wacom"
+
+#define LEFT_HANDED_KEY		"left-handed"
+
+static const gchar introspection_xml[] =
+"<node name='/org/gnome/SettingsDaemon/Wacom'>"
+"  <interface name='org.gnome.SettingsDaemon.Wacom'>"
+"    <method name='SetOLEDLabels'>"
+"      <arg name='device_path' direction='in' type='s'/>"
+"      <arg name='labels' direction='in' type='as'/>"
+"    </method>"
+"  </interface>"
+"</node>";
+
+struct _GsdWacomManager
+{
+        GObject parent;
+
+        guint start_idle_id;
+        GdkSeat *seat;
+        guint device_added_id;
+
+        GsdShell *shell_proxy;
+
+        gchar *machine_id;
+
+#if HAVE_WACOM
+        WacomDeviceDatabase *wacom_db;
+#endif
+
+        /* DBus */
+        GDBusNodeInfo   *introspection_data;
+        GDBusConnection *dbus_connection;
+        GCancellable    *dbus_cancellable;
+        guint            dbus_register_object_id;
+        guint            name_id;
+};
+
+static void     gsd_wacom_manager_class_init  (GsdWacomManagerClass *klass);
+static void     gsd_wacom_manager_init        (GsdWacomManager      *wacom_manager);
+static void     gsd_wacom_manager_finalize    (GObject              *object);
+
+static gboolean is_opaque_tablet (GsdWacomManager *manager,
+                                  GdkDevice       *device);
+
+G_DEFINE_TYPE (GsdWacomManager, gsd_wacom_manager, G_TYPE_OBJECT)
+
+static gpointer manager_object = NULL;
+
+static GVariant *
+map_tablet_mapping (GVariant *value, GVariant *old_default, GVariant *new_default)
+{
+        const gchar *mapping;
+
+        mapping = g_variant_get_boolean (value) ? "absolute" : "relative";
+        return g_variant_new_string (mapping);
+}
+
+static GVariant *
+map_tablet_left_handed (GVariant *value, GVariant *old_default, GVariant *new_default)
+{
+        const gchar *rotation = g_variant_get_string (value, NULL);
+        return g_variant_new_boolean (g_strcmp0 (rotation, "half") == 0 ||
+                                      g_strcmp0 (rotation, "ccw") == 0);
+}
+
+static void
+migrate_tablet_settings (GsdWacomManager *manager,
+                         GdkDevice       *device)
+{
+        GsdSettingsMigrateEntry tablet_settings[] = {
+                { "is-absolute", "mapping", map_tablet_mapping },
+                { "keep-aspect", "keep-aspect", NULL },
+                { "rotation", "left-handed", map_tablet_left_handed },
+        };
+        gchar *old_path, *new_path;
+        const gchar *vendor, *product;
+
+        vendor = gdk_device_get_vendor_id (device);
+        product = gdk_device_get_product_id (device);
+
+        old_path = g_strdup_printf ("/org/gnome/settings-daemon/peripherals/wacom/%s-usb:%s:%s/",
+                                    manager->machine_id, vendor, product);
+        new_path = g_strdup_printf ("/org/gnome/desktop/peripherals/tablets/%s:%s/",
+                                    vendor, product);
+
+        gsd_settings_migrate_check ("org.gnome.settings-daemon.peripherals.wacom.deprecated",
+                                    old_path,
+                                    "org.gnome.desktop.peripherals.tablet",
+                                    new_path,
+                                    tablet_settings, G_N_ELEMENTS (tablet_settings));
+
+        /* Opaque tablets' mapping may be modified by users, so only these
+         * need migration of settings.
+         */
+        if (is_opaque_tablet (manager, device)) {
+                GsdSettingsMigrateEntry display_setting[] = {
+                        { "display", "output", NULL },
+                };
+
+                gsd_settings_migrate_check ("org.gnome.desktop.peripherals.tablet.deprecated",
+                                            new_path,
+                                            "org.gnome.desktop.peripherals.tablet",
+                                            new_path,
+                                            display_setting, G_N_ELEMENTS (display_setting));
+        }
+
+        g_free (old_path);
+        g_free (new_path);
+}
+
+static void
+gsd_wacom_manager_class_init (GsdWacomManagerClass *klass)
+{
+        GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+
+        object_class->finalize = gsd_wacom_manager_finalize;
+}
+
+static gchar *
+get_device_path (GdkDevice *device)
+{
+#if HAVE_WAYLAND
+        if (gnome_settings_is_wayland ())
+                return g_strdup (gdk_wayland_device_get_node_path (device));
+        else
+#endif
+                return xdevice_get_device_node (gdk_x11_device_get_id (device));
+}
+
+static gboolean
+is_opaque_tablet (GsdWacomManager *manager,
+                  GdkDevice       *device)
+{
+        gboolean is_opaque = FALSE;
+#if HAVE_WACOM
+        WacomDevice *wacom_device;
+        gchar *devpath;
+
+        devpath = get_device_path (device);
+        wacom_device = libwacom_new_from_path (manager->wacom_db, devpath,
+                                               WFALLBACK_GENERIC, NULL);
+        if (wacom_device) {
+                WacomIntegrationFlags integration_flags;
+
+                integration_flags = libwacom_get_integration_flags (wacom_device);
+                is_opaque = (integration_flags &
+                             (WACOM_DEVICE_INTEGRATED_DISPLAY | WACOM_DEVICE_INTEGRATED_SYSTEM)) == 0;
+                libwacom_destroy (wacom_device);
+        }
+
+#endif
+        return is_opaque;
+}
+
+static GdkDevice *
+lookup_device_by_path (GsdWacomManager *manager,
+                       const gchar     *path)
+{
+        GList *devices, *l;
+
+        devices = gdk_seat_get_slaves (manager->seat,
+                                       GDK_SEAT_CAPABILITY_ALL);
+
+        for (l = devices; l; l = l->next) {
+                GdkDevice *device = l->data;
+                gchar *dev_path = get_device_path (device);
+
+                if (g_strcmp0 (dev_path, path) == 0) {
+                        g_free (dev_path);
+                        return device;
+                }
+
+                g_free (dev_path);
+        }
+
+        g_list_free (devices);
+
+        return NULL;
+}
+
+static GSettings *
+device_get_settings (GdkDevice *device)
+{
+        GSettings *settings;
+        gchar *path;
+
+        path = g_strdup_printf ("/org/gnome/desktop/peripherals/tablets/%s:%s/",
+                                gdk_device_get_vendor_id (device),
+                                gdk_device_get_product_id (device));
+        settings = g_settings_new_with_path ("org.gnome.desktop.peripherals.tablet",
+                                             path);
+        g_free (path);
+
+        return settings;
+}
+
+static void
+handle_method_call (GDBusConnection       *connection,
+                    const gchar           *sender,
+                    const gchar           *object_path,
+                    const gchar           *interface_name,
+                    const gchar           *method_name,
+                    GVariant              *parameters,
+                    GDBusMethodInvocation *invocation,
+                    gpointer               data)
+{
+	GsdWacomManager *self = GSD_WACOM_MANAGER (data);
+        GError *error = NULL;
+        GdkDevice *device;
+
+        if (g_strcmp0 (method_name, "SetOLEDLabels") == 0) {
+                gchar *device_path, *label;
+                gboolean left_handed;
+                GSettings *settings;
+                GVariantIter *iter;
+                gint i = 0;
+
+		g_variant_get (parameters, "(sas)", &device_path, &iter);
+                device = lookup_device_by_path (self, device_path);
+                if (!device) {
+                        g_dbus_method_invocation_return_value (invocation, NULL);
+                        return;
+                }
+
+                settings = device_get_settings (device);
+                left_handed = g_settings_get_boolean (settings, LEFT_HANDED_KEY);
+                g_object_unref (settings);
+
+                while (g_variant_iter_loop (iter, "s", &label)) {
+                        if (!set_oled (device_path, left_handed, i, label, &error)) {
+                                g_free (label);
+                                break;
+                        }
+                        i++;
+                }
+
+                g_variant_iter_free (iter);
+
+                if (error)
+                        g_dbus_method_invocation_return_gerror (invocation, error);
+                else
+                        g_dbus_method_invocation_return_value (invocation, NULL);
+        }
+}
+
+static const GDBusInterfaceVTable interface_vtable =
+{
+	handle_method_call,
+	NULL, /* Get Property */
+	NULL, /* Set Property */
+};
+
+static void
+device_added_cb (GdkSeat         *seat,
+                 GdkDevice       *device,
+                 GsdWacomManager *manager)
+{
+        if (gdk_device_get_source (device) == GDK_SOURCE_PEN &&
+            gdk_device_get_device_type (device) == GDK_DEVICE_TYPE_SLAVE) {
+                migrate_tablet_settings (manager, device);
+        }
+}
+
+static void
+add_devices (GsdWacomManager     *manager,
+             GdkSeatCapabilities  capabilities)
+{
+        GList *devices, *l;
+
+        devices = gdk_seat_get_slaves (manager->seat, capabilities);
+        for (l = devices; l ; l = l->next)
+		device_added_cb (manager->seat, l->data, manager);
+        g_list_free (devices);
+}
+
+static void
+set_devicepresence_handler (GsdWacomManager *manager)
+{
+        GdkSeat *seat;
+
+        seat = gdk_display_get_default_seat (gdk_display_get_default ());
+        manager->device_added_id = g_signal_connect (seat, "device-added",
+                                                           G_CALLBACK (device_added_cb), manager);
+        manager->seat = seat;
+}
+
+static void
+gsd_wacom_manager_init (GsdWacomManager *manager)
+{
+#if HAVE_WACOM
+        manager->wacom_db = libwacom_database_new ();
+#endif
+}
+
+static gboolean
+gsd_wacom_manager_idle_cb (GsdWacomManager *manager)
+{
+        gnome_settings_profile_start (NULL);
+
+        set_devicepresence_handler (manager);
+
+        add_devices (manager, GDK_SEAT_CAPABILITY_TABLET_STYLUS);
+
+        gnome_settings_profile_end (NULL);
+
+        manager->start_idle_id = 0;
+
+        return FALSE;
+}
+
+static void
+on_bus_gotten (GObject		   *source_object,
+	       GAsyncResult	   *res,
+	       GsdWacomManager	   *manager)
+{
+	GDBusConnection	       *connection;
+	GError		       *error = NULL;
+
+	connection = g_bus_get_finish (res, &error);
+
+	if (connection == NULL) {
+		if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+			g_warning ("Couldn't get session bus: %s", error->message);
+		g_error_free (error);
+		return;
+	}
+
+	manager->dbus_connection = connection;
+	manager->dbus_register_object_id = g_dbus_connection_register_object (connection,
+									      GSD_WACOM_DBUS_PATH,
+									      manager->introspection_data->interfaces[0],
+									      &interface_vtable,
+									      manager,
+									      NULL,
+									      &error);
+
+	if (manager->dbus_register_object_id == 0) {
+		g_warning ("Error registering object: %s", error->message);
+		g_error_free (error);
+		return;
+	}
+
+        manager->name_id = g_bus_own_name_on_connection (connection,
+                                                         GSD_WACOM_DBUS_NAME,
+                                                         G_BUS_NAME_OWNER_FLAGS_NONE,
+                                                         NULL,
+                                                         NULL,
+                                                         NULL,
+                                                         NULL);
+}
+
+static void
+register_manager (GsdWacomManager *manager)
+{
+        manager->introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL);
+        manager->dbus_cancellable = g_cancellable_new ();
+        g_assert (manager->introspection_data != NULL);
+
+        g_bus_get (G_BUS_TYPE_SESSION,
+                   manager->dbus_cancellable,
+                   (GAsyncReadyCallback) on_bus_gotten,
+                   manager);
+}
+
+static gchar *
+get_machine_id (void)
+{
+        gchar *no_per_machine_file, *machine_id = NULL;
+        gboolean per_machine;
+        gsize len;
+
+        no_per_machine_file = g_build_filename (g_get_user_config_dir (), "gnome-settings-daemon", "no-per-machine-config", NULL);
+        per_machine = !g_file_test (no_per_machine_file, G_FILE_TEST_EXISTS);
+        g_free (no_per_machine_file);
+
+        if (!per_machine ||
+            (!g_file_get_contents ("/etc/machine-id", &machine_id, &len, NULL) &&
+             !g_file_get_contents ("/var/lib/dbus/machine-id", &machine_id, &len, NULL))) {
+                return g_strdup ("00000000000000000000000000000000");
+        }
+
+        machine_id[len - 1] = '\0';
+        return machine_id;
+}
+
+gboolean
+gsd_wacom_manager_start (GsdWacomManager *manager,
+                         GError         **error)
+{
+        gnome_settings_profile_start (NULL);
+
+        register_manager (manager_object);
+
+        manager->machine_id = get_machine_id ();
+
+        manager->start_idle_id = g_idle_add ((GSourceFunc) gsd_wacom_manager_idle_cb, manager);
+        g_source_set_name_by_id (manager->start_idle_id, "[gnome-settings-daemon] gsd_wacom_manager_idle_cb");
+
+        gnome_settings_profile_end (NULL);
+
+        return TRUE;
+}
+
+void
+gsd_wacom_manager_stop (GsdWacomManager *manager)
+{
+        g_debug ("Stopping wacom manager");
+
+        g_clear_pointer (&manager->machine_id, g_free);
+
+        if (manager->name_id != 0) {
+                g_bus_unown_name (manager->name_id);
+                manager->name_id = 0;
+        }
+
+        if (manager->dbus_register_object_id) {
+                g_dbus_connection_unregister_object (manager->dbus_connection,
+                                                     manager->dbus_register_object_id);
+                manager->dbus_register_object_id = 0;
+        }
+
+        if (manager->seat != NULL) {
+                g_signal_handler_disconnect (manager->seat, manager->device_added_id);
+                manager->seat = NULL;
+        }
+}
+
+static void
+gsd_wacom_manager_finalize (GObject *object)
+{
+        GsdWacomManager *wacom_manager;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GSD_IS_WACOM_MANAGER (object));
+
+        wacom_manager = GSD_WACOM_MANAGER (object);
+
+        g_return_if_fail (wacom_manager != NULL);
+
+        gsd_wacom_manager_stop (wacom_manager);
+
+        if (wacom_manager->start_idle_id != 0)
+                g_source_remove (wacom_manager->start_idle_id);
+
+        g_clear_object (&wacom_manager->shell_proxy);
+
+#if HAVE_WACOM
+        libwacom_database_destroy (wacom_manager->wacom_db);
+#endif
+
+        G_OBJECT_CLASS (gsd_wacom_manager_parent_class)->finalize (object);
+}
+
+GsdWacomManager *
+gsd_wacom_manager_new (void)
+{
+        if (manager_object != NULL) {
+                g_object_ref (manager_object);
+        } else {
+                manager_object = g_object_new (GSD_TYPE_WACOM_MANAGER, NULL);
+                g_object_add_weak_pointer (manager_object,
+                                           (gpointer *) &manager_object);
+        }
+
+        return GSD_WACOM_MANAGER (manager_object);
+}
diff --git a/plugins/wacom/gsd-wacom-manager.h b/plugins/wacom/gsd-wacom-manager.h
new file mode 100644
index 0000000..faef607
--- /dev/null
+++ b/plugins/wacom/gsd-wacom-manager.h
@@ -0,0 +1,39 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu>
+ * Copyright (C) 2010 Red Hat, Inc.
+ *
+ * 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/>.
+ *
+ */
+
+#ifndef __GSD_WACOM_MANAGER_H
+#define __GSD_WACOM_MANAGER_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define GSD_TYPE_WACOM_MANAGER         (gsd_wacom_manager_get_type ())
+
+G_DECLARE_FINAL_TYPE (GsdWacomManager, gsd_wacom_manager, GSD, WACOM_MANAGER, GObject)
+
+GsdWacomManager *       gsd_wacom_manager_new                 (void);
+gboolean                gsd_wacom_manager_start               (GsdWacomManager *manager,
+                                                               GError         **error);
+void                    gsd_wacom_manager_stop                (GsdWacomManager *manager);
+
+G_END_DECLS
+
+#endif /* __GSD_WACOM_MANAGER_H */
diff --git a/plugins/wacom/gsd-wacom-oled-constants.h b/plugins/wacom/gsd-wacom-oled-constants.h
new file mode 100644
index 0000000..e93f744
--- /dev/null
+++ b/plugins/wacom/gsd-wacom-oled-constants.h
@@ -0,0 +1,41 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2013 Przemo Firszt <przemo@firszt.eu>
+ *
+ * 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/>.
+ *
+ */
+
+#ifndef __GSD_WACOM_OLED_CONSTANTS_H
+#define __GSD_WACOM_OLED_CONSTANTS_H
+
+G_BEGIN_DECLS
+
+typedef enum {
+	GSD_WACOM_OLED_TYPE_USB,
+	GSD_WACOM_OLED_TYPE_BLUETOOTH,
+	GSD_WACOM_OLED_TYPE_RAW_BLUETOOTH
+} GsdWacomOledType;
+
+/* OLED parameters */
+#define OLED_WIDTH		64			/*Width of OLED icon - hardware dependent*/
+#define OLED_HEIGHT		32			/*Height of OLED icon - hardware dependent*/
+#define LABEL_SIZE		30			/*Maximum length of text for OLED icon*/
+#define MAX_TOKEN		(LABEL_SIZE >> 1)	/*Maximum number of tokens equals half of maximum number of characters*/
+#define MAX_IMAGE_SIZE		1024			/*Size of buffer for storing OLED image*/
+#define MAX_1ST_LINE_LEN	10			/*Maximum number of characters in 1st line of OLED icon*/
+
+G_END_DECLS
+
+#endif /* __GSD_WACOM_OLED_CONSTANTS_H */
diff --git a/plugins/wacom/gsd-wacom-oled-helper.c b/plugins/wacom/gsd-wacom-oled-helper.c
new file mode 100644
index 0000000..86f2891
--- /dev/null
+++ b/plugins/wacom/gsd-wacom-oled-helper.c
@@ -0,0 +1,422 @@
+/*
+ * Copyright (C) 2012      Przemo Firszt <przemo@firszt.eu>
+ *
+ * The code is derived from gsd-wacom-led-helper.c
+ * written by:
+ * Copyright (C) 2010-2011 Richard Hughes <richard@hughsie.com>
+ * Copyright (C) 2012      Bastien Nocera <hadess@hadess.net>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#include <unistd.h>
+
+#include <stdlib.h>
+#include "config.h"
+
+#include <glib.h>
+#include <locale.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <gudev/gudev.h>
+
+#include "gsd-wacom-oled-constants.h"
+
+#define USB_PIXELS_PER_BYTE 2
+#define BT_PIXELS_PER_BYTE 8
+#define USB_BUF_LEN OLED_HEIGHT * OLED_WIDTH / USB_PIXELS_PER_BYTE
+#define BT_BUF_LEN OLED_WIDTH * OLED_HEIGHT / BT_PIXELS_PER_BYTE
+
+static void
+oled_scramble_icon (guchar *image)
+{
+	guchar buf[USB_BUF_LEN];
+	int x, y, i;
+	guchar l1, l2, h1, h2;
+
+	for (i = 0; i < USB_BUF_LEN; i++)
+		buf[i] = image[i];
+
+	for (y = 0; y < (OLED_HEIGHT / 2); y++) {
+		for (x = 0; x < (OLED_WIDTH / 2); x++) {
+			l1 = (0x0F & (buf[OLED_HEIGHT - 1 - x + OLED_WIDTH * y]));
+			l2 = (0x0F & (buf[OLED_HEIGHT - 1 - x + OLED_WIDTH * y] >> 4));
+			h1 = (0xF0 & (buf[OLED_WIDTH - 1 - x + OLED_WIDTH * y] << 4));
+			h2 = (0xF0 & (buf[OLED_WIDTH - 1 - x + OLED_WIDTH * y]));
+
+			image[2 * x + OLED_WIDTH * y] = h1 | l1;
+			image[2 * x + 1 + OLED_WIDTH * y] = h2 | l2;
+		}
+	}
+}
+
+static void
+oled_bt_scramble_icon (guchar *input_image)
+{
+	unsigned char image[BT_BUF_LEN];
+	unsigned mask;
+	unsigned s1;
+	unsigned s2;
+	unsigned r1 ;
+	unsigned r2 ;
+	unsigned r;
+	unsigned char buf[256];
+	int i, w, x, y, z;
+
+	for (i = 0; i < BT_BUF_LEN; i++)
+		image[i] = input_image[i];
+
+	for (x = 0; x < 32; x++) {
+		for (y = 0; y < 8; y++)
+			buf[(8 * x) + (7 - y)] = image[(8 * x) + y];
+	}
+
+	/* Change 76543210 into GECA6420 as required by Intuos4 WL
+	 *        HGFEDCBA      HFDB7531
+	 */
+	for (x = 0; x < 4; x++) {
+		for (y = 0; y < 4; y++) {
+			for (z = 0; z < 8; z++) {
+				mask = 0x0001;
+				r1 = 0;
+				r2 = 0;
+				i = (x << 6) + (y << 4) + z;
+				s1 = buf[i];
+				s2 = buf[i+8];
+				for (w = 0; w < 8; w++) {
+					r1 |= (s1 & mask);
+					r2 |= (s2 & mask);
+					s1 <<= 1;
+					s2 <<= 1;
+					mask <<= 2;
+				}
+				r = r1 | (r2 << 1);
+				i = (x << 6) + (y << 4) + (z << 1);
+				image[i] = 0xFF & r;
+				image[i+1] = (0xFF00 & r) >> 8;
+			}
+		}
+	}
+	for (i = 0; i < BT_BUF_LEN; i++)
+		input_image[i] = image[i];
+}
+
+static void
+gsd_wacom_oled_convert_1_bit (guchar *image)
+{
+	guchar buf[BT_BUF_LEN];
+	guchar b0, b1, b2, b3, b4, b5, b6, b7;
+	int i;
+
+	for (i = 0; i < BT_BUF_LEN; i++) {
+		b0 = 0b10000000 & (image[(4 * i) + 0] >> 0);
+		b1 = 0b01000000 & (image[(4 * i) + 0] << 3);
+		b2 = 0b00100000 & (image[(4 * i) + 1] >> 2);
+		b3 = 0b00010000 & (image[(4 * i) + 1] << 1);
+		b4 = 0b00001000 & (image[(4 * i) + 2] >> 4);
+		b5 = 0b00000100 & (image[(4 * i) + 2] >> 1);
+		b6 = 0b00000010 & (image[(4 * i) + 3] >> 6);
+		b7 = 0b00000001 & (image[(4 * i) + 3] >> 3);
+		buf[i] = b0 | b1 | b2 | b3 | b4 | b5 | b6 | b7;
+	}
+	for (i = 0; i < BT_BUF_LEN; i++)
+		image[i] = buf[i];
+}
+
+static int
+gsd_wacom_oled_prepare_buf (guchar *image, GsdWacomOledType type)
+{
+	int len = 0;
+
+	switch (type) {
+	case GSD_WACOM_OLED_TYPE_USB:
+		/* Image has to be scrambled for devices connected over USB ... */
+		oled_scramble_icon (image);
+		len = USB_BUF_LEN;
+		break;
+	case GSD_WACOM_OLED_TYPE_BLUETOOTH:
+		/* ... but for bluetooth it has to be converted to 1 bit colour instead of scrambling */
+		gsd_wacom_oled_convert_1_bit (image);
+		len = BT_BUF_LEN;
+		break;
+	case GSD_WACOM_OLED_TYPE_RAW_BLUETOOTH:
+		/* Image has also to be scrambled for devices connected over BT using the raw API ... */
+		gsd_wacom_oled_convert_1_bit (image);
+		len = BT_BUF_LEN;
+		oled_bt_scramble_icon (image);
+		break;
+	default:
+		g_assert_not_reached ();
+	}
+
+	return len;
+}
+
+static gboolean
+gsd_wacom_oled_helper_write (const gchar *filename, gchar *buffer, GsdWacomOledType type, GError **error)
+{
+	guchar *image;
+	gint retval;
+	gsize length;
+	gint fd = -1;
+	gboolean ret = TRUE;
+
+	fd = open (filename, O_WRONLY);
+	if (fd < 0) {
+		ret = FALSE;
+		g_set_error (error, 1, 0, "Failed to open filename: %s", filename);
+		goto out;
+	}
+
+	image = g_base64_decode (buffer, &length);
+	if (length != USB_BUF_LEN) {
+		ret = FALSE;
+		g_set_error (error, 1, 0, "Base64 buffer has length of %" G_GSIZE_FORMAT " (expected %i)", length, USB_BUF_LEN);
+		goto out;
+	}
+	if (!image) {
+		ret = FALSE;
+		g_set_error (error, 1, 0, "Decoding base64 buffer failed");
+		goto out;
+	}
+
+	length = gsd_wacom_oled_prepare_buf (image, type);
+	if (!length) {
+		ret = FALSE;
+		g_set_error (error, 1, 0, "Invalid image buffer length");
+		goto out;
+	}
+
+	retval = write (fd, image, length);
+	if (retval != length) {
+		ret = FALSE;
+		g_set_error (error, 1, 0, "Writing to %s failed", filename);
+	}
+
+	g_free (image);
+out:
+	if (fd >= 0)
+		close (fd);
+	return ret;
+}
+
+static char *
+get_oled_sysfs_path (GUdevDevice *device,
+		    int          button_num)
+{
+	char *status;
+	char *filename;
+
+	status = g_strdup_printf ("button%d_rawimg", button_num);
+	filename = g_build_filename (g_udev_device_get_sysfs_path (device), "wacom_led", status, NULL);
+	g_free (status);
+
+	return filename;
+}
+
+static char *
+get_bt_oled_sysfs_path (GUdevDevice *device, int button_num)
+{
+	char *status;
+	char *filename;
+
+	status = g_strdup_printf ("/oled%i_img", button_num);
+	filename = g_build_filename (g_udev_device_get_sysfs_path (device), status, NULL);
+	g_free (status);
+	return filename;
+}
+
+static char *
+get_bt_oled_filename (GUdevClient *client, GUdevDevice *device, int button_num)
+{
+	GUdevDevice *hid_dev;
+	const char *dev_uniq;
+	GList *hid_list;
+	GList *element;
+	const char *dev_hid_uniq;
+	char *filename = NULL;
+
+	dev_uniq = g_udev_device_get_property (device, "UNIQ");
+
+	hid_list =  g_udev_client_query_by_subsystem (client, "hid");
+	element = g_list_first(hid_list);
+	while (element) {
+		hid_dev = (GUdevDevice*)element->data;
+		dev_hid_uniq = g_udev_device_get_property (hid_dev, "HID_UNIQ");
+		if (g_strrstr (dev_uniq, dev_hid_uniq)){
+			filename = get_bt_oled_sysfs_path (hid_dev, button_num);
+			g_object_unref (hid_dev);
+			break;
+		}
+		g_object_unref (hid_dev);
+		element = g_list_next(element);
+	}
+	g_list_free(hid_list);
+	return filename;
+}
+
+static char *
+get_oled_sys_path (GUdevClient      *client,
+		   GUdevDevice      *device,
+		   int               button_num,
+		   gboolean          usb,
+		   GsdWacomOledType *type)
+{
+	GUdevDevice *parent;
+	char *filename = NULL;
+
+	/* check for new unified hid implementation first */
+	parent = g_udev_device_get_parent_with_subsystem (device, "hid", NULL);
+	if (parent) {
+		filename = get_oled_sysfs_path (parent, button_num);
+		g_object_unref (parent);
+		if(g_file_test (filename, G_FILE_TEST_EXISTS)) {
+			*type = usb ? GSD_WACOM_OLED_TYPE_USB : GSD_WACOM_OLED_TYPE_RAW_BLUETOOTH;
+			return filename;
+		}
+		g_clear_pointer (&filename, g_free);
+	}
+
+	/* old kernel */
+	if (usb) {
+		parent = g_udev_device_get_parent_with_subsystem (device, "usb", "usb_interface");
+		if (!parent)
+			goto no_parent;
+
+		filename = get_oled_sysfs_path (parent, button_num);
+		*type = GSD_WACOM_OLED_TYPE_USB;
+	 } else if (g_strrstr (g_udev_device_get_property (device, "DEVPATH"), "bluetooth")) {
+		parent = g_udev_device_get_parent_with_subsystem (device, "input", NULL);
+		if (!parent)
+			goto no_parent;
+
+		filename = get_bt_oled_filename (client, parent, button_num);
+		*type = GSD_WACOM_OLED_TYPE_BLUETOOTH;
+	} else {
+		g_critical ("Not an expected device: '%s'",
+			    g_udev_device_get_device_file (device));
+		goto out_err;
+	}
+
+	g_object_unref (parent);
+
+	return filename;
+
+no_parent:
+	g_debug ("Could not find proper parent device for '%s'",
+		 g_udev_device_get_device_file (device));
+
+out_err:
+	return NULL;
+}
+
+
+int main (int argc, char **argv)
+{
+	GOptionContext *context;
+	GUdevClient *client;
+	GUdevDevice *device;
+	int uid, euid;
+	char *filename;
+	GError *error = NULL;
+	const char * const subsystems[] = { "input", NULL };
+	int ret = 1;
+	gboolean usb;
+	GsdWacomOledType type;
+
+	char *path = NULL;
+	char *buffer = NULL;
+	int button_num = -1;
+
+	const GOptionEntry options[] = {
+		{ "path", '\0', 0, G_OPTION_ARG_FILENAME, &path, "Device path for the Wacom device", NULL },
+		{ "buffer", '\0', 0, G_OPTION_ARG_STRING, &buffer, "Image to set base64 encoded", NULL },
+		{ "button", '\0', 0, G_OPTION_ARG_INT, &button_num, "Which button icon to set", NULL },
+		{ NULL}
+	};
+
+	/* get calling process */
+	uid = getuid ();
+	euid = geteuid ();
+	if (uid != 0 || euid != 0) {
+		g_print ("This program can only be used by the root user\n");
+		return 1;
+	}
+
+	context = g_option_context_new (NULL);
+	g_option_context_set_summary (context, "GNOME Settings Daemon Wacom OLED Icon Helper");
+	g_option_context_add_main_entries (context, options, NULL);
+	g_option_context_parse (context, &argc, &argv, NULL);
+
+	if (path == NULL ||
+	    button_num < 0 ||
+	    buffer == NULL) {
+		char *txt;
+
+		txt = g_option_context_get_help (context, FALSE, NULL);
+		g_print ("%s", txt);
+		g_free (txt);
+
+		g_option_context_free (context);
+
+		return 1;
+	}
+	g_option_context_free (context);
+
+	client = g_udev_client_new (subsystems);
+	device = g_udev_client_query_by_device_file (client, path);
+	if (device == NULL) {
+		g_critical ("Could not find device '%s' in udev database", path);
+		goto out;
+	}
+
+	if (g_udev_device_get_property_as_boolean (device, "ID_INPUT_TABLET") == FALSE &&
+	    g_udev_device_get_property_as_boolean (device, "ID_INPUT_TOUCHPAD") == FALSE) {
+		g_critical ("Device '%s' is not a Wacom tablet", path);
+		goto out;
+	}
+
+	if (g_strcmp0 (g_udev_device_get_property (device, "ID_BUS"), "usb") != 0)
+		usb = FALSE;
+	else
+		usb = TRUE;
+
+	filename = get_oled_sys_path (client, device, button_num, usb, &type);
+	if (!filename)
+		goto out;
+
+	if (gsd_wacom_oled_helper_write (filename, buffer, type, &error) == FALSE) {
+		g_critical ("Could not set OLED icon for '%s': %s", path, error->message);
+		g_error_free (error);
+		g_free (filename);
+		goto out;
+	}
+	g_free (filename);
+
+	g_debug ("Successfully set OLED icon for '%s', button %d", path, button_num);
+
+	ret = 0;
+
+out:
+	g_free (path);
+	g_free (buffer);
+
+	g_clear_object (&device);
+	g_clear_object (&client);
+
+	return ret;
+}
diff --git a/plugins/wacom/gsd-wacom-oled.c b/plugins/wacom/gsd-wacom-oled.c
new file mode 100644
index 0000000..4c2daf1
--- /dev/null
+++ b/plugins/wacom/gsd-wacom-oled.c
@@ -0,0 +1,258 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2013 Przemo Firszt <przemo@firszt.eu>
+ *
+ * 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 <unistd.h>
+#include <math.h>
+#include <pango/pango.h>
+#include <pango/pangocairo.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "gsd-wacom-oled.h"
+
+#define MAGIC_BASE64		"base64:"		/*Label starting with base64: is treated as already encoded*/
+#define MAGIC_BASE64_LEN	strlen(MAGIC_BASE64)
+
+static void
+oled_surface_to_image (guchar          *image,
+		       cairo_surface_t *surface)
+{
+	unsigned char *csurf;
+	int i, x, y;
+	unsigned char lo, hi;
+
+	cairo_surface_flush (surface);
+	csurf = cairo_image_surface_get_data (surface);
+	i = 0;
+	for (y = 0; y < OLED_HEIGHT; y++) {
+		for (x = 0; x < (OLED_WIDTH / 2); x++) {
+			hi = 0xf0 & csurf[4 * OLED_WIDTH * y + 8 * x + 1];
+			lo = 0x0f & (csurf[4 * OLED_WIDTH * y + 8 * x + 5] >> 4);
+			image[i] = hi | lo;
+			i++;
+		}
+	}
+}
+
+static void
+oled_split_text (char *label,
+		 char *line1,
+		 char *line2)
+{
+	char delimiters[5] = "+-_ ";
+	char **token;
+	int token_len[MAX_TOKEN];
+	gsize length;
+	int i;
+
+	if (g_utf8_strlen (label, LABEL_SIZE) <= MAX_1ST_LINE_LEN) {
+		g_utf8_strncpy (line1, label, MAX_1ST_LINE_LEN);
+		return;
+	}
+
+	token = g_strsplit_set (label, delimiters, -1);
+
+	if (g_utf8_strlen (token[0], LABEL_SIZE) > MAX_1ST_LINE_LEN) {
+		g_utf8_strncpy (line1, label, MAX_1ST_LINE_LEN);
+		g_utf8_strncpy (line2, label + MAX_1ST_LINE_LEN, LABEL_SIZE - MAX_1ST_LINE_LEN);
+		return;
+	}
+
+	for (i = 0; token[i] != NULL; i++)
+		token_len[i] = g_utf8_strlen (token[i], LABEL_SIZE);
+
+	length = token_len[0];
+	i = 0;
+	while ((length + token_len[i + 1] + 1) <= MAX_1ST_LINE_LEN) {
+		i++;
+		length = length + token_len[i] + 1;
+	}
+
+	g_utf8_strncpy (line1, label, length);
+	g_utf8_strncpy (line2, label + length + 1, LABEL_SIZE - length);
+
+	return;
+}
+
+static void
+oled_render_text (char             *label,
+		  guchar	   *image,
+                  gboolean          left_handed)
+{
+	cairo_t *cr;
+	cairo_surface_t *surface;
+	PangoFontDescription *desc;
+	PangoLayout *layout;
+	int width, height;
+	double dx, dy;
+	char line1[LABEL_SIZE + 1] = "";
+	char line2[LABEL_SIZE + 1] = "";
+	char *buf;
+
+	oled_split_text (label ,line1, line2);
+
+	buf = g_strdup_printf ("%s\n%s", line1, line2);
+
+	surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, OLED_WIDTH, OLED_HEIGHT);
+	cr = cairo_create (surface);
+
+        /* Rotate text so it's seen correctly on the device, or at
+         * least from top to bottom for LTR text in vertical modes.
+         */
+        if (left_handed) {
+		cairo_translate (cr, OLED_WIDTH, OLED_HEIGHT);
+		cairo_scale (cr, -1, -1);
+        }
+
+	cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.99);
+	cairo_paint (cr);
+
+	layout = pango_cairo_create_layout (cr);
+	pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
+	pango_layout_set_text (layout, buf, - 1);
+	g_free (buf);
+	desc = pango_font_description_new ();
+
+	pango_font_description_set_family (desc, "Terminal");
+	pango_font_description_set_absolute_size (desc, PANGO_SCALE * 11);
+	pango_layout_set_font_description (layout, desc);
+	pango_font_description_free (desc);
+	pango_layout_get_size (layout, &width, &height);
+	width = width/PANGO_SCALE;
+	cairo_new_path (cr);
+
+	dx = trunc (((double)OLED_WIDTH - width) / 2);
+
+	if (*line2 == '\0')
+		dy = 10;
+	else
+		dy = 4;
+
+	cairo_move_to (cr, dx, dy);
+	cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 1.0);
+	pango_cairo_update_layout (cr, layout);
+
+	pango_cairo_layout_path (cr, layout);
+	cairo_fill (cr);
+
+	oled_surface_to_image (image, surface);
+
+	g_object_unref (layout);
+	cairo_destroy (cr);
+
+	cairo_surface_destroy (surface);
+}
+
+char *
+gsd_wacom_oled_gdkpixbuf_to_base64 (GdkPixbuf *pixbuf)
+{
+	int i, x, y, ch, rs;
+	guchar *pix, *p;
+	guchar *image;
+	guchar lo, hi;
+	char *base_string, *base64;
+
+	if (OLED_WIDTH != gdk_pixbuf_get_width (pixbuf))
+		return NULL;
+
+	if (OLED_HEIGHT != gdk_pixbuf_get_height (pixbuf))
+		return NULL;
+
+	ch = gdk_pixbuf_get_n_channels (pixbuf);
+	rs = gdk_pixbuf_get_rowstride (pixbuf);
+	pix = gdk_pixbuf_get_pixels (pixbuf);
+
+	image = g_malloc (MAX_IMAGE_SIZE);
+	i = 0;
+	for (y = 0; y < OLED_HEIGHT; y++) {
+		for (x = 0; x < (OLED_WIDTH / 2); x++) {
+			p = pix + y * rs + 2 * x * ch;
+			hi = 0xf0 & ((p[0] + p[1] + p[2])/ 3 * p[3] / 0xff);
+			p = pix + y * rs + ((2 * x) + 1) * ch;
+			lo = 0x0f & (((p[0] + p[1] + p[2])/ 3 * p[3] / 0xff) >> 4);
+			image[i] = hi | lo;
+			i++;
+		}
+	}
+
+	base_string = g_base64_encode (image, MAX_IMAGE_SIZE);
+	base64 = g_strconcat (MAGIC_BASE64, base_string, NULL);
+	g_free (base_string);
+	g_free (image);
+
+	return base64;
+}
+
+static char *
+oled_encode_image (char             *label,
+                   gboolean          left_handed)
+{
+	unsigned char *image;
+
+	image = g_malloc (MAX_IMAGE_SIZE);
+
+	/* convert label to image */
+	oled_render_text (label, image, left_handed);
+
+	return (g_base64_encode (image, MAX_IMAGE_SIZE));
+}
+
+gboolean
+set_oled (const gchar  *device_path,
+          gboolean      left_handed,
+          guint         button,
+          char	       *label,
+          GError      **error)
+{
+	char *command;
+	gboolean ret;
+	char *buffer;
+        gint status;
+
+#ifndef HAVE_GUDEV
+	/* Not implemented on non-Linux systems */
+	return TRUE;
+#endif
+
+	if (g_str_has_prefix (label, MAGIC_BASE64)) {
+		buffer = g_strdup (label + MAGIC_BASE64_LEN);
+        } else {
+		buffer = oled_encode_image (label, left_handed);
+	}
+
+	g_debug ("Setting OLED label '%s' on button %d (device %s)", label, button, device_path);
+
+	command = g_strdup_printf ("pkexec " LIBEXECDIR "/gsd-wacom-oled-helper --path %s --button %d --buffer %s",
+				   device_path, button, buffer);
+	ret = g_spawn_command_line_sync (command,
+					 NULL,
+					 NULL,
+					 &status,
+					 error);
+
+        if (ret == TRUE && status != 0)
+                ret = FALSE;
+
+	g_free (command);
+
+        return ret;
+}
diff --git a/plugins/wacom/gsd-wacom-oled.h b/plugins/wacom/gsd-wacom-oled.h
new file mode 100644
index 0000000..dc5d39c
--- /dev/null
+++ b/plugins/wacom/gsd-wacom-oled.h
@@ -0,0 +1,34 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2013 Przemo Firszt <przemo@firszt.eu>
+ *
+ * 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 "gsd-wacom-oled-constants.h"
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#ifndef __GSD_WACOM_OLED_H
+#define __GSD_WACOM_OLED_H
+
+G_BEGIN_DECLS
+
+gboolean set_oled (const gchar *device_path, gboolean left_handed, guint button, char *label, GError **error);
+char *gsd_wacom_oled_gdkpixbuf_to_base64 (GdkPixbuf *pixbuf);
+
+G_END_DECLS
+
+#endif /* __GSD_WACOM_OLED_H */
diff --git a/plugins/wacom/main.c b/plugins/wacom/main.c
new file mode 100644
index 0000000..a19a71b
--- /dev/null
+++ b/plugins/wacom/main.c
@@ -0,0 +1,7 @@
+#define NEW gsd_wacom_manager_new
+#define START gsd_wacom_manager_start
+#define STOP gsd_wacom_manager_stop
+#define MANAGER GsdWacomManager
+#include "gsd-wacom-manager.h"
+
+#include "daemon-skeleton-gtk.h"
diff --git a/plugins/wacom/meson.build b/plugins/wacom/meson.build
new file mode 100644
index 0000000..c00323d
--- /dev/null
+++ b/plugins/wacom/meson.build
@@ -0,0 +1,62 @@
+policy = 'org.gnome.settings-daemon.plugins.wacom.policy'
+
+policy_in = configure_file(
+  input: policy + '.in.in',
+  output: policy + '.in',
+  configuration: plugins_conf
+)
+
+i18n.merge_file(
+  input: policy_in,
+  output: policy,
+  po_dir: po_dir,
+  install: true,
+  install_dir: join_paths(gsd_datadir, 'polkit-1', 'actions')
+)
+
+sources = files(
+  'gsd-wacom-manager.c',
+  'gsd-wacom-oled.c',
+  'main.c'
+)
+
+deps = plugins_deps + [
+  gtk_dep,
+  libcommon_dep,
+  m_dep,
+  pango_dep
+]
+
+if enable_wacom
+  deps += libwacom_dep
+endif
+
+cflags += ['-DLIBEXECDIR="@0@"'.format(gsd_libexecdir)]
+
+executable(
+  'gsd-' + plugin_name,
+  sources,
+  include_directories: [top_inc, data_inc],
+  dependencies: deps,
+  c_args: cflags,
+  install: true,
+  install_rpath: gsd_pkglibdir,
+  install_dir: gsd_libexecdir
+)
+
+if enable_gudev
+  deps = [
+    gudev_dep,
+    m_dep
+  ]
+
+  executable(
+    'gsd-wacom-oled-helper',
+    'gsd-wacom-oled-helper.c',
+    include_directories: top_inc,
+    dependencies: deps,
+    install: true,
+    install_rpath: gsd_pkglibdir,
+    install_dir: gsd_libexecdir
+  )
+endif
diff --git a/plugins/wacom/org.gnome.settings-daemon.plugins.wacom.policy.in.in b/plugins/wacom/org.gnome.settings-daemon.plugins.wacom.policy.in.in
new file mode 100644
index 0000000..fe0df93
--- /dev/null
+++ b/plugins/wacom/org.gnome.settings-daemon.plugins.wacom.policy.in.in
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE policyconfig PUBLIC
+ "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
+ "http://www.freedesktop.org/standards/PolicyKit/1.0/policyconfig.dtd">
+<policyconfig>
+
+  <!--
+    Policy definitions for gnome-settings-daemon system-wide actions.
+  -->
+
+  <vendor>GNOME Settings Daemon</vendor>
+  <vendor_url>http://git.gnome.org/browse/gnome-settings-daemon</vendor_url>
+  <icon_name>input-tablet</icon_name>
+
+  <action id="org.gnome.settings-daemon.plugins.wacom.wacom-led-helper">
+    <!-- SECURITY:
+          - A normal active user on the local machine does not need permission
+            to change the LED setting for a Wacom tablet
+     -->
+    <description>Modify the lit LED for a Wacom tablet</description>
+    <message>Authentication is required to modify the lit LED for a Wacom tablet</message>
+    <defaults>
+      <allow_any>no</allow_any>
+      <allow_inactive>no</allow_inactive>
+      <allow_active>yes</allow_active>
+    </defaults>
+    <annotate key="org.freedesktop.policykit.exec.path">@libexecdir@/gsd-wacom-led-helper</annotate>
+  </action>
+
+  <action id="org.gnome.settings-daemon.plugins.wacom.wacom-oled-helper">
+    <!-- SECURITY:
+          - A normal active user on the local machine does not need permission
+            to change the OLED images for a Wacom tablet
+     -->
+    <description>Modify the OLED image for a Wacom tablet</description>
+    <message>Authentication is required to modify the OLED image for a Wacom tablet</message>
+    <defaults>
+      <allow_any>no</allow_any>
+      <allow_inactive>no</allow_inactive>
+      <allow_active>yes</allow_active>
+    </defaults>
+    <annotate key="org.freedesktop.policykit.exec.path">@libexecdir@/gsd-wacom-oled-helper</annotate>
+  </action>
+
+</policyconfig>
+