[mutter] monitor-manager: Add a handle_orientation_change helper function

[Carlos Garnacho <carlosg src gnome org>]

commit 4c1220836331b9442a54ff0ec9dfa5ab55ed91e3
Author: Hans de Goede <hdegoede redhat com>
Date:   Thu Oct 15 12:21:05 2020 +0200

    monitor-manager: Add a handle_orientation_change helper function
    
    Move the bulk of orientation_changed to a new handle_orientation_change
    helper function. This is a preparation patch for further orientation
    handling related changes.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1506

 src/backends/meta-monitor-manager.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)
---
diff --git a/src/backends/meta-monitor-manager.c b/src/backends/meta-monitor-manager.c
index 1c6d37c303..18aeddcd9c 100644
--- a/src/backends/meta-monitor-manager.c
+++ b/src/backends/meta-monitor-manager.c
@@ -678,16 +678,13 @@ done:
 }
 
 static void
-orientation_changed (MetaOrientationManager *orientation_manager,
-                     MetaMonitorManager     *manager)
+handle_orientation_change (MetaOrientationManager *orientation_manager,
+                           MetaMonitorManager     *manager)
 {
   MetaMonitorTransform transform;
   GError *error = NULL;
   MetaMonitorsConfig *config;
 
-  if (!manager->panel_orientation_managed)
-    return;
-
   switch (meta_orientation_manager_get_orientation (orientation_manager))
     {
     case META_ORIENTATION_NORMAL:
@@ -726,6 +723,16 @@ orientation_changed (MetaOrientationManager *orientation_manager,
   g_object_unref (config);
 }
 
+static void
+orientation_changed (MetaOrientationManager *orientation_manager,
+                     MetaMonitorManager     *manager)                     
+{
+  if (!manager->panel_orientation_managed)
+    return;
+
+  handle_orientation_change (orientation_manager, manager);
+}
+
 static void
 experimental_features_changed (MetaSettings           *settings,
                                MetaExperimentalFeature old_experimental_features,