[gtk: 1/3] Add bigger shadow and border-radius to menus

[Jakub Steiner <jimmac src gnome org>]

commit 95f06f6e7555e63342554bdac13237457248d678
Author: frederik.feichtmeier <frederik feichtmeier gmail com>
Date:   Wed Nov 28 17:43:55 2018 +0100

    Add bigger shadow and border-radius to menus
    
    Increase the visibility of the box-shadow for menus
    Introduce a border-radius variable for menus
    Use this variable for all corners of menus except top for the top menus

 gtk/theme/Adwaita/_common.scss | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 679fe2a0f9..4faaf734cf 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -6,6 +6,7 @@ $ease-out-quad: cubic-bezier(0.25, 0.46, 0.45, 0.94);
 $asset_suffix: if($variant=='dark', '-dark', '');
 $backdrop_transition: 200ms ease-out;
 $button_transition: all 200ms $ease-out-quad;
+$menu_radius: 3px;
 
 * {
   padding: 0;
@@ -2008,6 +2009,11 @@ menubar,
     min-height: 16px;
     padding: 4px 8px;
 
+    menu {
+       border-radius: 0 0 $menu_radius $menu_radius;
+       menu { border-radius: $menu_radius; }
+    }
+
     &:hover { //Seems like it :hover even with keyboard focus
       box-shadow: inset 0 -3px $selected_bg_color;
       color: $link_color;
@@ -2020,13 +2026,16 @@ menubar,
   }
 }
 
+.background.popup { background-color: transparent; }
+
 menu,
 .menu,
 .context-menu {
   // this is not a good solution, commenting out for now margin: 4px; // See 
https://bugzilla.gnome.org/show_bug.cgi?id=591258
-  padding: 2px 0px;
+  padding: 8px 0px;
   background-color: $menu_color;
   border: 1px solid $borders_color; // adds borders in a non composited env
+  border-radius: $menu_radius;
 
   .csd & { border: none; }  // axes borders in a composited env
 
@@ -2088,12 +2097,16 @@ menu,
     &.top {
       margin-top: -6px;
       border-bottom: 1px solid mix($fg_color, $base_color, 10%);
+      border-top-right-radius: $menu_radius;
+      border-top-left-radius: $menu_radius;
       -gtk-icon-source: -gtk-icontheme('pan-up-symbolic');
     }
 
     &.bottom {
       margin-bottom: -6px;
       border-top: 1px solid mix($fg_color, $base_color, 10%);
+      border-bottom-right-radius: $menu_radius;
+      border-bottom-left-radius: $menu_radius;
       -gtk-icon-source: -gtk-icontheme('pan-down-symbolic');
     }
 
@@ -4408,8 +4421,8 @@ decoration {
   .ssd & { box-shadow: 0 0 0 1px $_wm_border; } //just doing borders, wm draws actual shadows
 
   .csd.popup & {
-    border-radius: 0;
-    box-shadow: 0 1px 2px transparentize(black, 0.8),
+    border-radius: $menu_radius;
+    box-shadow: 0 1px 5px transparentize(black, 0.7),
                 0 0 0 1px transparentize($_wm_border, 0.1);
   }