[mutter] monitor: Add API to query suggested position

[Jonas Ådahl <jadahl src gnome org>]

commit f607b03456231e4ba132273e4d33d40c649932fc
Author: Jonas Ådahl <jadahl gmail com>
Date:   Mon Jan 9 15:35:03 2017 +0800

    monitor: Add API to query suggested position
    
    Adds an API to get the position suggested by the backend. This
    translates to position advertised by some VM:s, used to hint at a
    position making the position more natural (i.e. placed similarly to how
    it may be placed on the host desktop).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=777732

 src/backends/meta-monitor.c |   17 +++++++++++++++++
 src/backends/meta-monitor.h |    4 ++++
 2 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/src/backends/meta-monitor.c b/src/backends/meta-monitor.c
index 0fb1063..20e524f 100644
--- a/src/backends/meta-monitor.c
+++ b/src/backends/meta-monitor.c
@@ -362,6 +362,23 @@ meta_monitor_tiled_get_tile_group_id (MetaMonitorTiled *monitor_tiled)
   return monitor_tiled->tile_group_id;
 }
 
+gboolean
+meta_monitor_get_suggested_position (MetaMonitor *monitor,
+                                     int         *x,
+                                     int         *y)
+{
+  MetaOutput *main_output;
+
+  main_output = meta_monitor_get_main_output (monitor);
+  if (main_output->suggested_x < 0 && main_output->suggested_y < 0)
+    return FALSE;
+
+  *x = main_output->suggested_x;
+  *y = main_output->suggested_y;
+
+  return TRUE;
+}
+
 static void
 add_tiled_monitor_outputs (MetaMonitorManager *monitor_manager,
                            MetaMonitorTiled   *monitor_tiled)
diff --git a/src/backends/meta-monitor.h b/src/backends/meta-monitor.h
index 83ca24e..8ed9563 100644
--- a/src/backends/meta-monitor.h
+++ b/src/backends/meta-monitor.h
@@ -115,6 +115,10 @@ const char * meta_monitor_get_serial (MetaMonitor *monitor);
 
 uint32_t meta_monitor_tiled_get_tile_group_id (MetaMonitorTiled *monitor_tiled);
 
+gboolean meta_monitor_get_suggested_position (MetaMonitor *monitor,
+                                              int         *x,
+                                              int         *y);
+
 MetaLogicalMonitor * meta_monitor_get_logical_monitor (MetaMonitor *monitor);
 
 MetaMonitorMode * meta_monitor_get_mode_from_spec (MetaMonitor         *monitor,