From c3ef09704c74df622967eb75d22288264553a69e Mon Sep 17 00:00:00 2001
From: Tavmjong Bah <tavmjong@free.fr>
Date: Sun, 8 May 2016 16:30:43 +0200
Subject: Attemt to fix ruler background for GTK 3.20.

(bzr r14876.1.1)
---
 share/ui/style.css    | 8 ++++++++
 src/widgets/ruler.cpp | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/share/ui/style.css b/share/ui/style.css
index 41b8ba426..3ee6f7450 100644
--- a/share/ui/style.css
+++ b/share/ui/style.css
@@ -9,6 +9,8 @@
  *     Left -> Right
  *
  * We need a standardized naming scheme.
+ *
+ * As of Gtk 3.20, you cannot use widget names.
  */
 
 /* Lightest to darkest based on linear rgb */
@@ -27,10 +29,16 @@ GtkWidget {
 /*    font-size: 12pt; */
 }
 
+/* Gtk  <= 3.18 */
 SPRuler {
     background-color: @bg_color05;
 }
 
+/* Gtk  > 3.18 */
+ruler-widget {
+    background-color: @bg_color05;
+}
+
 SPCanvas {
     background-color: @bg_color0;
 }
diff --git a/src/widgets/ruler.cpp b/src/widgets/ruler.cpp
index bcab535f9..deffd384a 100644
--- a/src/widgets/ruler.cpp
+++ b/src/widgets/ruler.cpp
@@ -168,6 +168,10 @@ sp_ruler_class_init (SPRulerClass *klass)
   GObjectClass   *object_class  = G_OBJECT_CLASS (klass);
   GtkWidgetClass *widget_class  = GTK_WIDGET_CLASS (klass);
 
+#if GTK_CHECK_VERSION(3,20,0)
+  gtk_widget_class_set_css_name (widget_class, "ruler-widget");
+#endif
+
   object_class->dispose              = sp_ruler_dispose;
   object_class->set_property         = sp_ruler_set_property;
   object_class->get_property         = sp_ruler_get_property;
-- 
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