[gnome-settings-daemon/gnome-3-16] wacom: Apply left handed mode

[Carlos Garnacho <carlosg src gnome org>]

commit a9b764045da5be20533c0c2ea9d9b096ebff4163
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Oct 16 14:14:47 2015 +0200

    wacom: Apply left handed mode
    
    With the introduction of GsDeviceMapper (commit 0810de0f), left-handed
    mode became responsibility of this object, which was applied by applying an
    extra rotation to the device coordinate matrix.
    
    Later, the device coordinate matrix handling was lifted to mutter, although
    the rotation setting was kept in the g-s-d side of the settings split, so
    GsdDeviceMapper would listen to the wrong settings, and left-handed mode
    became no mans land.
    
    Put the application of this setting back into GsdWacomManager, again
    translated to the "Wacom Rotation" device property. Nonetheless, all
    settings should move eventually to mutter domain, and this turned again
    into modifications to the coordinate matrix.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=749767

 plugins/wacom/gsd-wacom-manager.c |   21 ++++++++++++++++++++-
 1 files changed, 20 insertions(+), 1 deletions(-)
---
diff --git a/plugins/wacom/gsd-wacom-manager.c b/plugins/wacom/gsd-wacom-manager.c
index a06ced2..a9dd716 100644
--- a/plugins/wacom/gsd-wacom-manager.c
+++ b/plugins/wacom/gsd-wacom-manager.c
@@ -262,6 +262,22 @@ wacom_set_property (GsdWacomDevice *device,
 }
 
 static void
+set_rotation (GsdWacomDevice   *device,
+             GsdWacomRotation  rotation)
+{
+       gchar rot = rotation;
+       PropertyHelper property = {
+               .name = "Wacom Rotation",
+               .nitems = 1,
+               .format = 8,
+               .type = XA_INTEGER,
+               .data.c = &rot
+       };
+
+       wacom_set_property (device, &property);
+}
+
+static void
 set_pressurecurve (GsdWacomDevice *device,
                    GVariant       *value)
 {
@@ -815,6 +831,8 @@ set_wacom_settings (GsdWacomManager *manager,
                grab_button (id, TRUE, manager->priv->screen);
 
                return;
+       } else {
+               set_rotation (device, g_settings_get_enum (settings, KEY_ROTATION));
        }
 
        set_absolute (device, g_settings_get_boolean (settings, KEY_IS_ABSOLUTE));
@@ -843,9 +861,10 @@ wacom_settings_changed (GSettings      *settings,
        type = gsd_wacom_device_get_device_type (device);
 
        if (g_str_equal (key, KEY_ROTATION)) {
-                /* Real device rotation is handled in GsdDeviceMapper */
                if (type == WACOM_TYPE_PAD)
                        update_pad_leds (device);
+                else
+                        set_rotation (device, g_settings_get_enum (settings, key));
        } else if (g_str_equal (key, KEY_TOUCH)) {
                if (type == WACOM_TYPE_TOUCH)
                        set_touch (device, g_settings_get_boolean (settings, key));