[gtk] Adwaita: headerbar backdrop state

[Jakub Steiner <jimmac src gnome org>]

commit b5fd7b3211e611469604c0984b846e6cfb7f37a9
Author: Jakub Steiner <jimmac gmail com>
Date:   Thu Nov 29 14:34:53 2018 +0100

    Adwaita: headerbar backdrop state

 gtk/theme/Adwaita/_common.scss           | 8 +++++++-
 gtk/theme/Adwaita/gtk-contained-dark.css | 4 +++-
 gtk/theme/Adwaita/gtk-contained.css      | 4 +++-
 3 files changed, 13 insertions(+), 3 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index fb7e20b333..efe76e8ed7 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -1740,10 +1740,16 @@ window.devel {
                  linear-gradient(to top, lighten($c, 3%) 3px, lighten($c, 5%));
     }
 
-    background: transparent $gradient;
+    background: $bg_color $gradient;
     color: transparentize($fg_color,.9);
     
     label { color: $fg_color; }
+
+    &:backdrop {
+      background: $bg_color -gtk-icontheme("system-run-symbolic") 90% 0/256px 256px no-repeat,
+                  image($bg_color); /* background-color would flash */
+      color: transparentize($fg_color,.95);
+    }
   }
 }
 
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index 8b825b6dd7..e0b185d432 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -698,10 +698,12 @@ window.csd > .titlebar:not(headerbar) { padding: 0; background-color: transparen
 
 .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 right, transparent 65%, 
rgba(21, 83, 158, 0.1)), linear-gradient(to top, #2d2d2e 3px, #323233); color: rgba(238, 238, 236, 0.1); }
+window.devel headerbar.titlebar:not(.selection-mode) { background: #3f3e40 
-gtk-icontheme("system-run-symbolic") 90% 0/256px 256px no-repeat, linear-gradient(to right, transparent 65%, 
rgba(21, 83, 158, 0.1)), linear-gradient(to top, #2d2d2e 3px, #323233); color: rgba(238, 238, 236, 0.1); }
 
 window.devel headerbar.titlebar:not(.selection-mode) label { color: #eeeeec; }
 
+window.devel headerbar.titlebar:not(.selection-mode):backdrop { background: #3f3e40 
-gtk-icontheme("system-run-symbolic") 90% 0/256px 256px no-repeat, image(#3f3e40); /* background-color would 
flash */ color: rgba(238, 238, 236, 0.05); }
+
 /************ Pathbars * */
 .path-bar button.text-button, .path-bar button.image-button, .path-bar button { padding-left: 4px; 
padding-right: 4px; }
 
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 28d17120ac..7d5a61459b 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -706,10 +706,12 @@ window.csd > .titlebar:not(headerbar) { padding: 0; background-color: transparen
 
 .titlebar:not(headerbar) separator { background-color: #d6d1cd; }
 
-window.devel headerbar.titlebar:not(.selection-mode) { background: transparent 
-gtk-icontheme("system-run-symbolic") 90% 0/256px 256px no-repeat, linear-gradient(to right, transparent 65%, 
rgba(53, 132, 228, 0.2)), linear-gradient(to top, #d8d4d0, #dfdcd8 3px, #edebe9); color: rgba(46, 52, 54, 
0.1); }
+window.devel headerbar.titlebar:not(.selection-mode) { background: #f6f5f4 
-gtk-icontheme("system-run-symbolic") 90% 0/256px 256px no-repeat, linear-gradient(to right, transparent 65%, 
rgba(53, 132, 228, 0.2)), linear-gradient(to top, #d8d4d0, #dfdcd8 3px, #edebe9); color: rgba(46, 52, 54, 
0.1); }
 
 window.devel headerbar.titlebar:not(.selection-mode) label { color: #2e3436; }
 
+window.devel headerbar.titlebar:not(.selection-mode):backdrop { background: #f6f5f4 
-gtk-icontheme("system-run-symbolic") 90% 0/256px 256px no-repeat, image(#f6f5f4); /* background-color would 
flash */ color: rgba(46, 52, 54, 0.05); }
+
 /************ Pathbars * */
 .path-bar button.text-button, .path-bar button.image-button, .path-bar button { padding-left: 4px; 
padding-right: 4px; }