[gnome-shell] st/entry: Invalidate shadow on cursor position/size changes

[Marge Bot <marge-bot src gnome org>]

commit 2bb36db9e823ca616ec8af52f502665a58100049
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Fri Mar 5 11:31:26 2021 +0100

    st/entry: Invalidate shadow on cursor position/size changes
    
    When text shadows are used, the cursor indicating the current position
    also casts a shadow.
    
    This means we have to regenerate the shadow texture after the cursor
    position changed, so invalidate the shadow in that case.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1744>

 src/st/st-entry.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/st/st-entry.c b/src/st/st-entry.c
index f8b07d043c..d50c2548bd 100644
--- a/src/st/st-entry.c
+++ b/src/st/st-entry.c
@@ -539,7 +539,11 @@ static void
 clutter_text_cursor_changed (ClutterText *text,
                              StEntry     *entry)
 {
+  StEntryPrivate *priv = ST_ENTRY_PRIV (entry);
+
   st_entry_update_hint_visibility (entry);
+
+  g_clear_pointer (&priv->text_shadow_material, cogl_object_unref);
 }
 
 static void