Don't delay mirroring until polish

Mirroring is not a good candidate for delays because it isn't always
able to trigger a new polish.

Task-number: QTBUG-22968
Change-Id: I1243aadea1202936255a42f77dea2b7571c52cab
Reviewed-by: Alan Alpert <alan.alpert@nokia.com>

diff --git a/src/quick/items/qquickpositioners_p_p.h b/src/quick/items/qquickpositioners_p_p.h
index e7a5f8b..e454ba4 100644 (file)
--- a/src/quick/items/qquickpositioners_p_p.h
+++ b/src/quick/items/qquickpositioners_p_p.h
@@ -112,8 +112,9 @@ public:
     Qt::LayoutDirection layoutDirection;
 
     void mirrorChange() {
+        Q_Q(QQuickBasePositioner);
         if (type != QQuickBasePositioner::Vertical)
-            setPositioningDirty();
+            q->prePositioning(); //Don't postpone, as it might be the only trigger for visible changes.
     }
     bool isLeftToRight() const {
         if (type == QQuickBasePositioner::Vertical)