Use PropertyAnimator for show_tile_preview

Author: lenemter

src/WindowManager.vala

@@ -976,24 +976,24 @@ namespace Gala {
             unowned Meta.WindowActor window_actor = window.get_compositor_private () as Meta.WindowActor;
             window_group.set_child_below_sibling (tile_preview, window_actor);
 
-            var duration = AnimationDuration.SNAP / 2U;
-
             var rect = window.get_frame_rect ();
             tile_preview.set_position (rect.x, rect.y);
             tile_preview.set_size (rect.width, rect.height);
             tile_preview.show ();
 
-            if (Meta.Prefs.get_gnome_animations ()) {
-                tile_preview.save_easing_state ();
-                tile_preview.set_easing_mode (Clutter.AnimationMode.EASE_IN_OUT_QUAD);
-                tile_preview.set_easing_duration (duration);
-                tile_preview.opacity = 255U;
-                tile_preview.set_position (tile_rect.x, tile_rect.y);
-                tile_preview.set_size (tile_rect.width, tile_rect.height);
-                tile_preview.restore_easing_state ();
-            } else {
-                tile_preview.opacity = 255U;
-            }
+            new PropertyAnimator (
+                tile_preview,
+                AnimationDuration.SNAP / 2,
+                Clutter.AnimationMode.EASE_IN_OUT_QUAD,
+                {
+                    { "opacity", typeof (uint), null, 255u },
+                    { "x", typeof (float), null, (float) tile_rect.x },
+                    { "y", typeof (float), null, (float) tile_rect.y },
+                    { "width", typeof (float), null, (float) tile_rect.width },
+                    { "height", typeof (float), null, (float) tile_rect.height }
+                },
+                () => {}
+            );
         }
 
         public override void hide_tile_preview () {