From 5a7cc8b7efd744131aaca2f1d20cffc8f9fd5377 Mon Sep 17 00:00:00 2001
From: Sam Parkinson <sam@sam.today>
Date: Sat, 10 Oct 2015 19:09:43 +1100
Subject: [PATCH] Explicitly style ToolButton insensitive state, fixes #4901

The insensitive state of ToolButtons was implicitly styled, however
newer Gtk+ versions have broken this behaviour.

Thanks to @i5o for discovering the correct opacity value.
---
 gtk3/theme/gtk-widgets.css.em | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/gtk3/theme/gtk-widgets.css.em b/gtk3/theme/gtk-widgets.css.em
index 771197d..9b636c8 100644
--- a/gtk3/theme/gtk-widgets.css.em
+++ b/gtk3/theme/gtk-widgets.css.em
@@ -49,6 +49,8 @@ thickness = my_ceil(line_width)
 icon_small = icon_base * 3
 icon_large = icon_base * 5
 
+disabled_opacity = 0.5
+
 }
 
 * {
@@ -583,6 +585,11 @@ SugarPaletteWindowWidget GtkToolButton .button {
     padding: $(toolbutton_padding)px;
 }
 
+GtkToolButton .button:insensitive,
+SugarRadioToolButton .button:insensitive {
+    opacity: $(disabled_opacity);
+}
+
 .toolbar GtkToolButton .button,
 SugarPaletteWindowWidget GtkToolButton .button:prelight {
     padding: $(toolbutton_padding - default_padding)px;