[mutter] monitor-manager: Add get_is_builtin_display_on()

[Florian Müllner <fmuellner src gnome org>]

commit ed5c3b39ee285d25ebe1a5e62cea46b6cdedd59c
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Apr 20 20:00:45 2016 +0200

    monitor-manager: Add get_is_builtin_display_on()
    
    Wrap the existing laptop_display_is_on() method in a public function
    that gnome-shell can use to query whether a builtin output is present
    and enabled.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=765267

 src/backends/meta-monitor-config.c  |   11 +++++++++++
 src/backends/meta-monitor-config.h  |    2 ++
 src/backends/meta-monitor-manager.c |    8 ++++++++
 src/meta/meta-monitor-manager.h     |    2 ++
 4 files changed, 23 insertions(+), 0 deletions(-)
---
diff --git a/src/backends/meta-monitor-config.c b/src/backends/meta-monitor-config.c
index 1361dd6..727b033 100644
--- a/src/backends/meta-monitor-config.c
+++ b/src/backends/meta-monitor-config.c
@@ -1042,6 +1042,17 @@ apply_configuration_with_lid (MetaMonitorConfig  *self,
 }
 
 gboolean
+meta_monitor_config_get_is_builtin_display_on (MetaMonitorConfig *self)
+{
+  g_return_val_if_fail (META_IS_MONITOR_CONFIG (self), FALSE);
+
+  if (self->current)
+    return laptop_display_is_on (self->current);
+
+  return FALSE;
+}
+
+gboolean
 meta_monitor_config_apply_stored (MetaMonitorConfig  *self,
                                  MetaMonitorManager *manager)
 {
diff --git a/src/backends/meta-monitor-config.h b/src/backends/meta-monitor-config.h
index 10b95d2..f617649 100644
--- a/src/backends/meta-monitor-config.h
+++ b/src/backends/meta-monitor-config.h
@@ -49,4 +49,6 @@ void               meta_monitor_config_make_persistent (MetaMonitorConfig *confi
 void               meta_monitor_config_restore_previous (MetaMonitorConfig  *config,
                                                          MetaMonitorManager *manager);
 
+gboolean           meta_monitor_config_get_is_builtin_display_on (MetaMonitorConfig *config);
+
 #endif /* META_MONITOR_CONFIG_H */
diff --git a/src/backends/meta-monitor-manager.c b/src/backends/meta-monitor-manager.c
index 31d0d49..93588e3 100644
--- a/src/backends/meta-monitor-manager.c
+++ b/src/backends/meta-monitor-manager.c
@@ -1599,3 +1599,11 @@ meta_monitor_manager_get_monitor_at_point (MetaMonitorManager *manager,
 
   return -1;
 }
+
+gboolean
+meta_monitor_manager_get_is_builtin_display_on (MetaMonitorManager *manager)
+{
+  g_return_val_if_fail (META_IS_MONITOR_MANAGER (manager), FALSE);
+
+  return meta_monitor_config_get_is_builtin_display_on (manager->config);
+}
diff --git a/src/meta/meta-monitor-manager.h b/src/meta/meta-monitor-manager.h
index 5a6604c..68b5451 100644
--- a/src/meta/meta-monitor-manager.h
+++ b/src/meta/meta-monitor-manager.h
@@ -34,4 +34,6 @@ MetaMonitorManager *meta_monitor_manager_get  (void);
 gint meta_monitor_manager_get_monitor_for_output (MetaMonitorManager *manager,
                                                   guint               id);
 
+gboolean meta_monitor_manager_get_is_builtin_display_on (MetaMonitorManager *manager);
+
 #endif /* META_MONITOR_MANAGER_H */