[mutter/wip/carlosg/unthrottled-wayland: 6/9] clutter/stage: Update stored pointer coordinates in fast paths

[Carlos Garnacho <carlosg src gnome org>]

commit 1dbd8b7045ff34477d2ff7cec2d7184597d11ceb
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Aug 25 16:37:23 2021 +0200

    clutter/stage: Update stored pointer coordinates in fast paths
    
    If we are still under the "clear area" of the pick actor, we forget
    to update the coordinates. This is usually not needed, unless we
    need to repick again for non-event circumstances (e.g. pick actor
    is destroyed). This will ensure the right pointer coordinates are
    used afterwards in those situations.

 clutter/clutter/clutter-stage.c | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)
---
diff --git a/clutter/clutter/clutter-stage.c b/clutter/clutter/clutter-stage.c
index 2c235ba6ff..3f9394cc10 100644
--- a/clutter/clutter/clutter-stage.c
+++ b/clutter/clutter/clutter-stage.c
@@ -3440,6 +3440,24 @@ clutter_stage_get_device_coords (ClutterStage         *stage,
     *coords = entry->coords;
 }
 
+static void
+clutter_stage_set_device_coords (ClutterStage         *stage,
+                                 ClutterInputDevice   *device,
+                                 ClutterEventSequence *sequence,
+                                 graphene_point_t      coords)
+{
+  ClutterStagePrivate *priv = stage->priv;
+  PointerDeviceEntry *entry = NULL;
+
+  if (sequence != NULL)
+    entry = g_hash_table_lookup (priv->touch_sequences, sequence);
+  else
+    entry = g_hash_table_lookup (priv->pointer_devices, device);
+
+  if (entry)
+    entry->coords = coords;
+}
+
 static void
 create_crossing_event (ClutterStage         *stage,
                        ClutterInputDevice   *device,
@@ -3587,7 +3605,11 @@ clutter_stage_pick_and_update_device (ClutterStage             *stage,
     {
       if (clutter_stage_check_in_clear_area (stage, device,
                                              sequence, point))
-        return clutter_stage_get_device_actor (stage, device, sequence);
+        {
+          clutter_stage_set_device_coords (stage, device,
+                                           sequence, point);
+          return clutter_stage_get_device_actor (stage, device, sequence);
+        }
     }
 
   new_actor = _clutter_stage_do_pick (stage,