e_mod_effect: check return value of current angle

Change-Id: Id3340951148261c027b8c632e6a083f59ca5d4d9

diff --git a/src/e_mod_effect.c b/src/e_mod_effect.c
index 621b8e0728ced313fa186d3c47800e94049733c7..4f92f59c7f30cbcbeda6b40fcba903c493c86ee4 100644 (file)
--- a/src/e_mod_effect.c
+++ b/src/e_mod_effect.c
@@ -162,6 +162,11 @@ _eff_group_angle_get(E_Client *ec, E_Effect_Group group)
              int buffer_transform = e_comp_wl_output_buffer_transform_get(ec);
              int rot = e_client_e_state_rot_angle_current_get(parent_ec);
 
+             if (rot == E_CLIENT_ROTATION_ANGLE_UNKNOWN)
+               {
+                  EFFINF("parent ec(%p) angle is unknown, consider angle as 0", ec, parent_ec);
+                  rot = E_CLIENT_ROTATION_ANGLE_0;
+               }
              rot = (rot + (buffer_transform * 90)) % 360;
 
              return rot;