[gnome-flashback] backends: check panel autorotation state before applying autorotation

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 93c955f590fcb4fc096a4c9d7c2d038324ca857b
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Sep 5 17:30:22 2020 +0300

    backends: check panel autorotation state before applying autorotation
    
    So far, we've expected this signal to not happen whenever autorotation
    shouldn't apply (no accelerometer is a strong reason). In future commits
    we'll add further checks to this policy, so prevent autorotation to
    change the display configuration if the MetaOrientationManager signal
    happens but it should be ignored.
    
    Based on mutter commit:
    https://gitlab.gnome.org/GNOME/mutter/-/commit/bb0712077a384400f694

 backends/gf-monitor-manager.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/backends/gf-monitor-manager.c b/backends/gf-monitor-manager.c
index ad947b48..a64d0ca9 100644
--- a/backends/gf-monitor-manager.c
+++ b/backends/gf-monitor-manager.c
@@ -505,6 +505,9 @@ orientation_changed (GfOrientationManager *orientation_manager,
   GError *error = NULL;
   GfMonitorsConfig *config;
 
+  if (!manager->panel_orientation_managed)
+    return;
+
   switch (gf_orientation_manager_get_orientation (orientation_manager))
     {
       case GF_ORIENTATION_NORMAL: