From 10423726709539724be0ea19bed76ba4331af774 Mon Sep 17 00:00:00 2001
From: Alexander Larsson <alexl@redhat.com>
Date: Thu, 28 Jun 2012 21:30:24 +0200
Subject: [PATCH] Handle transparent colors better in GtkStyle emulation

We can't expose colors with alpha in the GtkStyle colors, since
GdkColor has no alpha. Currently we throw away alpha completely,
which fails very badly for completely transparent backgrounds,
which now is the default for most widgets, as it typically
end up with black-on-black.

We handle this by falling back on the default/previous colors for
transparent colors. This is is simple and avoids complete failure.

https://bugzilla.gnome.org/show_bug.cgi?id=671437
---
 gtk/deprecated/gtkstyle.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtk/deprecated/gtkstyle.c b/gtk/deprecated/gtkstyle.c
index 526636890c..16e3ce4542 100644
--- a/gtk/deprecated/gtkstyle.c
+++ b/gtk/deprecated/gtkstyle.c
@@ -673,7 +673,7 @@ set_color (GtkStyle        *style,
       break;
     }
 
-  if (color)
+  if (color && color->alpha > 0.01)
     {
       dest->pixel = 0;
       dest->red = CLAMP ((guint) (color->red * 65535), 0, 65535);