[gtk/wip/jimmac/adwaita-3-32] Adwaita: make switcher buttons' active darker

[Jakub Steiner <jimmac src gnome org>]

commit 50b93fe18fa7fdd52123ea5a91e0a663a0054126
Author: Jakub Steiner <jimmac gmail com>
Date:   Tue Jan 15 14:22:44 2019 +0100

    Adwaita: make switcher buttons' active darker
    
    - create more contrast against the headerbar background without lowering
      contrast with the label and border.
    - top border shaded for extra aid of the state being pressed (in the two button   scenatio)
    
    Addesses issue #1588

 gtk/theme/Adwaita/_common.scss           | 8 +++++++-
 gtk/theme/Adwaita/gtk-contained-dark.css | 2 ++
 gtk/theme/Adwaita/gtk-contained.css      | 2 ++
 3 files changed, 11 insertions(+), 1 deletion(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 1c326116a0..19871b3960 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -1671,7 +1671,13 @@ headerbar {
       padding: 0;
     }
   }
-
+  
+  stackswitcher button:checked {
+    /* darken switchbuttons for headerbars. issue #1588 */
+    background: if($variant == 'light', image(darken($bg_color, 17%)), image(darken($bg_color, 9%)));
+    border-top-color: darken($borders_color, 7%);
+  }
+  
   separator.titlebutton { opacity: 0; } /* hide the close button separator */
 
   .solid-csd & {
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index a5926e3298..8c8e6d46a9 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -668,6 +668,8 @@ searchbar > revealer > box { margin: -6px; padding: 6px; }
 
 .default-decoration.titlebar:not(headerbar) button.titlebutton, headerbar.default-decoration 
button.titlebutton { min-height: 26px; min-width: 26px; margin: 0; padding: 0; }
 
+.titlebar:not(headerbar) stackswitcher button:checked, headerbar stackswitcher button:checked { /* darken 
switchbuttons for headerbars. issue #1588 */ background: image(#282828); border-top-color: #141314; }
+
 .titlebar:not(headerbar) separator.titlebutton, headerbar separator.titlebutton { opacity: 0; }
 
 .solid-csd .titlebar:backdrop:dir(rtl):not(headerbar), .solid-csd 
.titlebar:backdrop:dir(ltr):not(headerbar), .solid-csd .titlebar:dir(rtl):not(headerbar), .solid-csd 
.titlebar:dir(ltr):not(headerbar), .solid-csd headerbar:backdrop:dir(rtl), .solid-csd 
headerbar:backdrop:dir(ltr), .solid-csd headerbar:dir(rtl), .solid-csd headerbar:dir(ltr) { margin-left: 
-1px; margin-right: -1px; margin-top: -1px; border-radius: 0; box-shadow: none; }
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index b9aab73e14..019e7ef16b 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -676,6 +676,8 @@ searchbar > revealer > box { margin: -6px; padding: 6px; }
 
 .default-decoration.titlebar:not(headerbar) button.titlebutton, headerbar.default-decoration 
button.titlebutton { min-height: 26px; min-width: 26px; margin: 0; padding: 0; }
 
+.titlebar:not(headerbar) stackswitcher button:checked, headerbar stackswitcher button:checked { /* darken 
switchbuttons for headerbars. issue #1588 */ background: image(#cfcac4); border-top-color: #bdb5ae; }
+
 .titlebar:not(headerbar) separator.titlebutton, headerbar separator.titlebutton { opacity: 0; }
 
 .solid-csd .titlebar:backdrop:dir(rtl):not(headerbar), .solid-csd 
.titlebar:backdrop:dir(ltr):not(headerbar), .solid-csd .titlebar:dir(rtl):not(headerbar), .solid-csd 
.titlebar:dir(ltr):not(headerbar), .solid-csd headerbar:backdrop:dir(rtl), .solid-csd 
headerbar:backdrop:dir(ltr), .solid-csd headerbar:dir(rtl), .solid-csd headerbar:dir(ltr) { margin-left: 
-1px; margin-right: -1px; margin-top: -1px; border-radius: 0; box-shadow: none; }