[gnome-shell/gbsneto/fix-frequent-view-clones] iconGrid: Only animate allocated icons

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 71431f217fcf5a345b86734db4b44517d6e1665d
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Aug 31 12:32:31 2019 -0300

    iconGrid: Only animate allocated icons
    
    Mutter recently added an optimization to only allocate
    visible children [1]. That broke ClutterClones, but it
    was subsequently fixed [2].
    
    However, that exposed a third problem, this time with
    FrequentView: non-allocated icons were being cloned and
    animated on the spring animation.
    
    Only animate allocated icons. PaginatedIconGrid does not
    require this check since it only animated the visible
    page, which is always allocated.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/696

 js/ui/iconGrid.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/js/ui/iconGrid.js b/js/ui/iconGrid.js
index e0a1e8bd8a..85447972e0 100644
--- a/js/ui/iconGrid.js
+++ b/js/ui/iconGrid.js
@@ -414,7 +414,7 @@ var IconGrid = GObject.registerClass({
      * set of items to be animated.
      */
     _getChildrenToAnimate() {
-        return this._getVisibleChildren();
+        return this._getVisibleChildren().filter(icon => icon.has_allocation());
     }
 
     _resetAnimationActors() {