efl_ui_position_manager_list: error when we detect that sizes are wrong

when sizes are different to the cached size, then the displayed items
are out of order, or do not fill the whole viewport. This should not
happen. In case that this is detected, print an error.

Co-authored-by: Mike Blumenkrantz <zmike@samsung.com>

Reviewed-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Differential Revision: https://phab.enlightenment.org/D9821

1 files changed, 9 insertions, 0 deletions

diff --git a/src/lib/elementary/efl_ui_position_manager_list.c b/src/lib/elementary/efl_ui_position_manager_list.c
index 2ed1259a16..603c60b58a 100644
--- a/src/lib/elementary/efl_ui_position_manager_list.c
+++ b/src/lib/elementary/efl_ui_position_manager_list.c
@@ -210,6 +210,15 @@ _position_items(Eo *obj EINA_UNUSED, Efl_Ui_Position_Manager_List_Data *pd, Vis_
         size = size_buffer[buffer_id].size;
         ent = obj_buffer[buffer_id].entity;
 
+        int diff = cache_access(obj, pd, i + 1) - cache_access(obj, pd, i);
+        int real_diff = 0;
+        if (pd->dir == EFL_UI_LAYOUT_ORIENTATION_VERTICAL)
+          real_diff = size.h;
+        else
+          real_diff = size.w;
+        if (real_diff != diff)
+          ERR("Reported sizes changed during caching and placement %d %d %d", i, real_diff, diff);
+
         if (ent == pd->last_group)
           {
              pd->last_group = NULL;