e_comp_object: restack the transform obj under the bottommost subsurface

fix the problem of subsurface is not composited when subsurface is
rendered by evas and the transform obj is enabled.

This patch is cherry-picked from below commit on tizen_9.0.
- commit b4e33ed2e303404149a862131f0aa603c8cc9fea
- Author: Changyeon Lee <cyeon.lee@samsung.com>
- Date:   Mon Aug 5 13:46:13 2024 +0900
- Subject: e_comp_object: restack the transform obj under the bottommost subsurface

Change-Id: Ib68c05aae1220e6afa37a5c9bdc7886bc45490cc

diff --git a/src/bin/e_comp_object.c b/src/bin/e_comp_object.c
index a85de0224b7faaa9bc61c1c32f58ae0db4a109f9..ec4931e90dee55b9d5b8ffff6f9e950766582466 100644 (file)
--- a/src/bin/e_comp_object.c
+++ b/src/bin/e_comp_object.c
@@ -486,35 +486,72 @@ _e_comp_object_cb_mirror_hide(void *data, Evas *e EINA_UNUSED, Evas_Object *obj
 }
 
 /////////////////////////////////////
+static Evas_Object *
+_e_comp_object_bottommost_object_get(Evas_Object *obj)
+{
+   E_Client *sub;
+   API_ENTRY obj;
+
+   if (!cw->ec) return obj;
+   if (!cw->ec->comp_data) return obj;
+   if (!cw->ec->comp_data->sub.below_list) return obj;
+
+   sub = eina_list_data_get(cw->ec->comp_data->sub.below_list);
+   while (sub)
+     {
+        if (!sub->comp_data || !sub->comp_data->sub.below_list)
+          return sub->frame;
+
+        sub = eina_list_data_get(sub->comp_data->sub.below_list);
+     }
+
+   return obj;
+}
 
 static void
 _e_comp_object_transform_obj_stack_update(Evas_Object *obj)
 {
    int layer = 0;
+   Evas_Object *bottommost_obj;
+   E_Client *topmost_ec;
+   E_Comp_Object *topmost_cw;
    API_ENTRY;
    EINA_SAFETY_ON_NULL_RETURN(cw->ec);
    if (cw->ec->input_only) return;
 
-   layer = evas_object_layer_get(obj);
+   topmost_ec = e_comp_wl_topmost_parent_get(cw->ec);
+   if (!topmost_ec) return;
 
-   if (cw->transform_bg_obj)
+   topmost_cw = evas_object_smart_data_get(topmost_ec->frame);
+   if (!topmost_cw) return;
+
+   if (e_util_strcmp(evas_object_type_get(topmost_ec->frame), SMART_NAME))
+     return;
+
+   if ((!topmost_cw->transform_bg_obj) && (!topmost_cw->transform_tranp_obj))
+     return;
+
+   bottommost_obj = _e_comp_object_bottommost_object_get(obj);
+   layer = evas_object_layer_get(bottommost_obj);
+
+   if (topmost_cw->transform_bg_obj)
      {
-        if (layer != evas_object_layer_get(cw->transform_bg_obj))
+        if (layer != evas_object_layer_get(topmost_cw->transform_bg_obj))
           {
-             evas_object_layer_set(cw->transform_bg_obj, layer);
+             evas_object_layer_set(topmost_cw->transform_bg_obj, layer);
           }
 
-        evas_object_stack_below(cw->transform_bg_obj, obj);
+        evas_object_stack_below(topmost_cw->transform_bg_obj, bottommost_obj);
      }
 
-   if (cw->transform_tranp_obj)
+   if (topmost_cw->transform_tranp_obj)
      {
-        if (layer != evas_object_layer_get(cw->transform_tranp_obj))
+        if (layer != evas_object_layer_get(topmost_cw->transform_tranp_obj))
           {
-             evas_object_layer_set(cw->transform_tranp_obj, layer);
+             evas_object_layer_set(topmost_cw->transform_tranp_obj, layer);
           }
 
-        evas_object_stack_below(cw->transform_tranp_obj, obj);
+        evas_object_stack_below(topmost_cw->transform_tranp_obj, bottommost_obj);
      }
 }