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orientation-manager: Do not change current orientation when locked

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Bail out of sync_state() immediately if the orientation is locked, before
calling read_iio_prox() which updates the curr_orientation value.

There are 2 reasons for this change:

1. Currently meta-monitor-config-manager.c always assumes normal / upright
orientation when generating a new config. This means that e.g. when an
external monitor gets plugged in the builtin panel's transform will be reset
to normal / upright even if the device is not in an upright orientation.

To fix this meta-monitor-config-manager.c needs to call
meta_orientation_manager_get_orientation() to get the current orientation
when generating a new config. Without this change locking the orientation
would stop the emitting of "orientation-changed" signals but we would
still update the curr_orientation value. So when a new config needs to
be generated the latest orientation would be used, effectively ignoring
the "orientation-lock" setting, not updating curr_orientation when
locked fixes this.

2. This ensures we properly emit an an "orientation-changed" signal when
the orientation has changed between when it was locked and it was
unlocked. Before this change if the user locked the orientation, changed it
and then unlocked it, no signal would be raised as we would already have
updated the curr_orientation value turning the sync_state() call in
orientation_lock_changed() into a no-op.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/959
This commit is contained in:
Hans de Goede 2019-12-04 14:36:17 +01:00 committed by Carlos Garnacho
parent c4f8b93357
commit c37e2523ac
1 changed files with 3 additions and 3 deletions
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6
src/backends/meta-orientation-manager.c
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@ -100,6 +100,9 @@ read_iio_proxy (MetaOrientationManager *self)
static void
sync_state (MetaOrientationManager *self)
{
if (g_settings_get_boolean (self->settings, ORIENTATION_LOCK_KEY))
return;
read_iio_proxy (self);
if (self->prev_orientation == self->curr_orientation)
@ -110,9 +113,6 @@ sync_state (MetaOrientationManager *self)
if (self->curr_orientation == META_ORIENTATION_UNDEFINED)
return;
if (g_settings_get_boolean (self->settings, ORIENTATION_LOCK_KEY))
return;
g_signal_emit (self, signals[ORIENTATION_CHANGED], 0);
}