[gtk] Adwaita: Propagate bg color to titlebar separator descendants

[Jakub Steiner <jimmac src gnome org>]

commit f1e24ca30af645375aa69f76dc8d96550d663ad4
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Tue Jul 24 14:37:57 2018 +0200

    Adwaita: Propagate bg color to titlebar separator descendants
    
    Gives the same background color to all separators descending from a
    title bar than to its direct childrens.
    
    This prevents separators which are in a titlebar but not direct children
    from the widget with the titlebar style class from being almost
    transparent and hence it prevent them from revealing the clear color of
    the window's titlebar (black).
    
    https://gitlab.gnome.org/GNOME/gtk/issues/1231

 gtk/theme/Adwaita/_common.scss           | 2 +-
 gtk/theme/Adwaita/gtk-contained-dark.css | 6 +++---
 gtk/theme/Adwaita/gtk-contained.css      | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index d898075488..f7b26a265a 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -1715,7 +1715,7 @@ headerbar { // headerbar border rounding
     box-shadow: none;
   }
 
-  > separator { background-color: $borders_color; }  // FIXME: use darker border?
+  separator { background-color: $borders_color; }  // FIXME: use darker border?
 
   @extend %titlebar;
 }
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index 6468e2e2be..94d5d4b576 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -692,7 +692,7 @@ window:not(.tiled):not(.maximized):not(.fullscreen):not(.solid-csd) stack header
 
 window.csd > .titlebar:not(headerbar) { padding: 0; background-color: transparent; background-image: none; 
border-style: none; border-color: transparent; box-shadow: none; }
 
-.titlebar:not(headerbar) > separator { background-color: #252526; }
+.titlebar:not(headerbar) separator { background-color: #252526; }
 
 window.devel headerbar.titlebar:not(.selection-mode) { background: transparent 
-gtk-icontheme("system-run-symbolic") 90% 0/256px 256px no-repeat, linear-gradient(to left, #3b4049 8%, 
#3f3e40 25%); color: rgba(238, 238, 236, 0.1); }
 
@@ -1472,9 +1472,9 @@ progressbar:backdrop { box-shadow: none; transition: 200ms ease-out; }
 
 progressbar progress { /* share most of scales' */ /* override insensitive that is specific to progress */ 
border-radius: 1.5px; }
 
-progressbar progress:disabled { background-color: #919494; border-color: #919494; }
+progressbar progress:disabled { background-color: #969696; border-color: #969696; }
 
-progressbar progress:backdrop:disabled { background-color: #566164; border-color: #566164; }
+progressbar progress:backdrop:disabled { background-color: #656466; border-color: #656466; }
 
 progressbar progress.left { border-top-left-radius: 2px; border-bottom-left-radius: 2px; }
 
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index cdceb2927a..8263e98444 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -700,7 +700,7 @@ window:not(.tiled):not(.maximized):not(.fullscreen):not(.solid-csd) stack header
 
 window.csd > .titlebar:not(headerbar) { padding: 0; background-color: transparent; background-image: none; 
border-style: none; border-color: transparent; box-shadow: none; }
 
-.titlebar:not(headerbar) > separator { background-color: #b6b6b3; }
+.titlebar:not(headerbar) separator { background-color: #b6b6b3; }
 
 window.devel headerbar.titlebar:not(.selection-mode) { background: transparent 
-gtk-icontheme("system-run-symbolic") 90% 0/256px 256px no-repeat, linear-gradient(to left, #d6dee7 8%, 
#e8e8e7 25%); color: rgba(46, 52, 54, 0.1); }