[gimp/gimp-2-10] themes: Remove 3D shadow box around eye and link toggles...

[Stanislav Grinkov <sgrinkov src gnome org>]

commit 250ad5de4698f681f2586f286d06639fe3b7bb96
Author: Stanislav Grinkov <43956-stanislavgrinkov users noreply gitlab gnome org>
Date:   Fri Sep 3 00:39:46 2021 +0600

    themes: Remove 3D shadow box around eye and link toggles...
    
    in Layers, Channels, and Paths dockable dialog tree views.
    
    Resolves: #1012

 themes/Dark/gtkrc  | 7 +++++++
 themes/Gray/gtkrc  | 7 +++++++
 themes/Light/gtkrc | 7 +++++++
 3 files changed, 21 insertions(+)
---
diff --git a/themes/Dark/gtkrc b/themes/Dark/gtkrc
index 4970e79ebe..48d58e1f15 100644
--- a/themes/Dark/gtkrc
+++ b/themes/Dark/gtkrc
@@ -2361,6 +2361,13 @@ style "gimp-dark-treeview" = "gimp-dark-default-style"
   engine  "pixmap"
     {
       image
+        {
+          function = SHADOW
+          file = "ui/null.png"
+          border = { 0, 0, 0, 0 }
+          stretch = TRUE
+        }
+     image
         {
           function = FLAT_BOX
           state = ACTIVE
diff --git a/themes/Gray/gtkrc b/themes/Gray/gtkrc
index c94ff7d038..ea385c5dd1 100644
--- a/themes/Gray/gtkrc
+++ b/themes/Gray/gtkrc
@@ -474,6 +474,13 @@ style "sogg-treeview" = "sogg-default-style"
 
   engine  "pixmap"
     {
+      image
+        {
+          function = SHADOW
+          file = "ui/null.png"
+          border = { 0, 0, 0, 0 }
+          stretch = TRUE
+        }
       image
         {
           function = FLAT_BOX
diff --git a/themes/Light/gtkrc b/themes/Light/gtkrc
index 09c7861313..b662375dd1 100644
--- a/themes/Light/gtkrc
+++ b/themes/Light/gtkrc
@@ -475,6 +475,13 @@ style "tlsog-treeview" = "tlsog-default-style"
   engine  "pixmap"
     {
       image
+        {
+          function = SHADOW
+          file = "ui/null.png"
+          border = { 0, 0, 0, 0 }
+          stretch = TRUE
+        }
+     image
         {
           function = FLAT_BOX
           state = ACTIVE