[gtk/gtk-3-24] Adwaita: subtle app icon dropshadow

[Jakub Steiner <jimmac src gnome org>]

commit f95f3c707aa5a4b1c7b76b2bb43a43519eaf9433
Author: Jakub Steiner <jimmac gmail com>
Date:   Fri Jul 19 12:07:35 2019 +0200

    Adwaita: subtle app icon dropshadow
    
    - make application icon dropshadow a legibility aid,
      not a strong styling choice.

 gtk/theme/Adwaita/_common.scss | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 530caa00ed..400efea7c3 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -4667,10 +4667,13 @@ stackswitcher button.text-button.circular { // FIXME aggregate with buttons
       -1px 0 rgba(0,0,0,0.1);
 }
 
-/* Drapshadow for large icons */ 
+/* Dropshadow for large icons */
 .icon-dropshadow {
-  -gtk-icon-shadow: 0 2px 12px rgba(0,0,0,0.1), 
-               0 1px 2px rgba(0,0,0,0.5);
+  -gtk-icon-shadow: 0 1px 12px rgba(0,0,0,0.05),
+      0 -1px rgba(0,0,0,0.05),
+      1px 0 rgba(0,0,0,0.1),
+      0 1px rgba(0,0,0,0.3),
+      -1px 0 rgba(0,0,0,0.1);
 }
 
 /*********