From: Timm Bäder <mail@baedert.org>
Date: Wed, 28 Aug 2019 12:24:50 +0000 (+0200)
Subject: widget: Queue an allocate on native widgets when changing opacity
X-Git-Tag: archive/raspbian/4.4.1+ds1-2+rpi1~1^2~321^2^2~916
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=1339c425a8c9bbb33db45dac7c2d5c95c9f9c867;p=gtk4.git

widget: Queue an allocate on native widgets when changing opacity

This way the opacity change works on toplevel windows on wayland.
---

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 9dcfd581d5..9d33ffdb66 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -11287,9 +11287,14 @@ gtk_widget_update_alpha (GtkWidget *widget)
   if (_gtk_widget_get_realized (widget))
     {
       if (GTK_IS_NATIVE (widget))
-	gdk_surface_set_opacity (priv->surface, priv->alpha / 255.0);
-
-      gtk_widget_queue_draw (widget);
+        {
+          gdk_surface_set_opacity (priv->surface, priv->alpha / 255.0);
+          gtk_widget_queue_allocate (widget);
+        }
+      else
+        {
+          gtk_widget_queue_draw (widget);
+        }
     }
 }