From 26e632e54958e42dcafedd5b26be1cd150eecb4b Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Fri, 3 Sep 2021 13:55:39 -0400
Subject: [PATCH] widget: Redraw when font options change

Its the right thing to do, even if it is a rare event.
---
 gtk/gtkwidget.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 6ef2add082..4d95822fc9 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -6427,7 +6427,7 @@ gtk_widget_get_effective_font_map (GtkWidget *widget)
     return pango_cairo_font_map_get_default ();
 }
 
-static void
+static gboolean
 update_pango_context (GtkWidget    *widget,
                       PangoContext *context)
 {
@@ -6436,6 +6436,9 @@ update_pango_context (GtkWidget    *widget,
   PangoFontDescription *font_desc;
   GtkSettings *settings;
   cairo_font_options_t *font_options;
+  guint old_serial;
+
+  old_serial = pango_context_get_serial (context);
 
   font_desc = gtk_css_style_get_pango_font (style);
   pango_context_set_font_description (context, font_desc);
@@ -6475,6 +6478,8 @@ update_pango_context (GtkWidget    *widget,
     }
 
   pango_context_set_font_map (context, gtk_widget_get_effective_font_map (widget));
+
+  return old_serial != pango_context_get_serial (context);
 }
 
 static void
@@ -6482,8 +6487,11 @@ gtk_widget_update_pango_context (GtkWidget *widget)
 {
   PangoContext *context = gtk_widget_peek_pango_context (widget);
 
-  if (context)
-    update_pango_context (widget, context);
+  if (!context)
+    return;
+
+  if (update_pango_context (widget, context))
+    gtk_widget_queue_draw (widget);
 }
 
 /**