[gnome-shell-sass] lookingGlass: Add actor tree inspector

[Florian Müllner <fmuellner src gnome org>]

commit 34f494a11860df6ef1494ad306e2d96886ac111f
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun May 31 17:31:48 2020 -0300

    lookingGlass: Add actor tree inspector
    
    Being able to visualize the actor tree is a handy feature
    to have, specially when debugging the hierarchy.
    
    Add a new "Actors" tab to the Looking Glass with the actor
    tree inspector. The tree is cleared on unmap to not get
    heavy on the number of actors.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1292

 widgets/_looking-glass.scss | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/widgets/_looking-glass.scss b/widgets/_looking-glass.scss
index 9c38e63..006c2ef 100644
--- a/widgets/_looking-glass.scss
+++ b/widgets/_looking-glass.scss
@@ -1,5 +1,7 @@
 /* Looking Glass */
 
+$text_fg_color: #ccc;
+
 // Dialog
 #LookingGlassDialog {
   background-color: $osd_bg_color;
@@ -52,6 +54,11 @@
     &:hover { color: lighten($link_color, 10%); }
     &:active { color: darken($link_color, 10%); }
    }
+  .actor-link {
+    color: $text_fg_color;
+    &:hover { color: lighten($text_fg_color, 20%); }
+    &:active { color: darken($text_fg_color, 20%); }
+   }
 }
 
 .lg-completions-text {