[gtk+/gtk-3-20] Adwaita: transparent textview border border

[Lapo Calamandrei <lapo src gnome org>]

commit 17d1cd1506f04f1d737bb562fb5811e0e07538e9
Author: Lapo Calamandrei <calamandrei gmail com>
Date:   Mon Apr 4 12:03:11 2016 +0200

    Adwaita: transparent textview border border
    
    So it will play nicely with gedit color combinations.
    See https://bugzilla.gnome.org/show_bug.cgi?id=764203

 gtk/theme/Adwaita/_common.scss           |    9 +++------
 gtk/theme/Adwaita/gtk-contained-dark.css |    5 ++---
 gtk/theme/Adwaita/gtk-contained.css      |    5 ++---
 3 files changed, 7 insertions(+), 12 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 7733d2e..d553c44 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -123,13 +123,10 @@ textview {
 
 textview border {
   background-color: mix($bg_color, $base_color, 50%);
-  background-image: image($bg_color); // HACK: the border node just draws background so, using a 
background-image to draw the border
-  background-repeat: no-repeat;
+  background-image: image(transparentize(black, 0.8)); // HACK: the border node just draws background so,
+  background-repeat: no-repeat;                        // using a background-image to draw the border
 
-  &:backdrop {
-    background-color: mix($backdrop_bg_color, $backdrop_base_color, 50%);
-    background-image: image($backdrop_bg_color);
-  }
+  &:backdrop { background-color: mix($backdrop_bg_color, $backdrop_base_color, 50%); }
 
   &.bottom {
     background-size: 100% 1px;
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index 0dbd69d..c6acb03 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -77,11 +77,10 @@ textview text {
 
 textview border {
   background-color: #313434;
-  background-image: image(#393f3f);
+  background-image: image(rgba(0, 0, 0, 0.2));
   background-repeat: no-repeat; }
   textview border:backdrop {
-    background-color: #333636;
-    background-image: image(#393f3f); }
+    background-color: #333636; }
   textview border.bottom {
     background-size: 100% 1px;
     background-position: top; }
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index a221f23..361299f 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -77,11 +77,10 @@ textview text {
 
 textview border {
   background-color: #f4f4f3;
-  background-image: image(#e8e8e7);
+  background-image: image(rgba(0, 0, 0, 0.2));
   background-repeat: no-repeat; }
   textview border:backdrop {
-    background-color: #f2f2f2;
-    background-image: image(#e8e8e7); }
+    background-color: #f2f2f2; }
   textview border.bottom {
     background-size: 100% 1px;
     background-position: top; }