[gnome-shell] dnd: Also consider indirect scaling of dnd actor

[Marge Bot <marge-bot src gnome org>]

commit a24a16c5ac35c08990f483b0b9575f1581b6fcfb
Author: Sebastian Keller <skeller gnome org>
Date:   Wed Feb 17 01:00:27 2021 +0100

    dnd: Also consider indirect scaling of dnd actor
    
    Some actors don't have the scale applied to them directly but are
    children of a scaled parent. In those case just retaining the scale will
    not be enough and the scale of the actor itself needs to be adjusted
    when reparenting. This could for example be seen when dragging windows
    from the workspace thumbnails.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1687>

 js/ui/dnd.js | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/js/ui/dnd.js b/js/ui/dnd.js
index 6b4a983823..0e972a13d7 100644
--- a/js/ui/dnd.js
+++ b/js/ui/dnd.js
@@ -400,6 +400,9 @@ var _Draggable = class _Draggable {
             scaledWidth = transformedExtents.get_width();
             scaledHeight = transformedExtents.get_height();
 
+            this._dragActor.scale_x = scaledWidth / this._dragOrigWidth;
+            this._dragActor.scale_y = scaledHeight / this._dragOrigHeight;
+
             this._dragOrigParent.remove_actor(this._dragActor);
             Main.uiGroup.add_child(this._dragActor);
             Main.uiGroup.set_child_above_sibling(this._dragActor, null);