SplitView: batch layout requests via polish()/updatePolish()

This results in less layouts, especially when a bunch of properties change
one after the other.

Change-Id: I8dd76d147bcc20f2ccddb587e59ac3e59f580f21
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/quicktemplates2/qquicksplitview_p_p.h b/src/quicktemplates2/qquicksplitview_p_p.h
index 1e0368d5..560276f0 100644
--- a/src/quicktemplates2/qquicksplitview_p_p.h
+++ b/src/quicktemplates2/qquicksplitview_p_p.h
@@ -65,6 +65,7 @@ public:
     void layoutResizeSplitItems(qreal &usedWidth, qreal &usedHeight, int &indexBeingResizedDueToDrag);
     void layoutResizeFillItem(QQuickItem *fillItem, qreal &usedWidth, qreal &usedHeight, int indexBeingResizedDueToDrag);
     void layoutPositionItems(const QQuickItem *fillItem);
+    void requestLayout();
     void layout();
     void createHandles();
     void createHandleItem(int index);
@@ -101,6 +102,8 @@ public:
     void itemImplicitWidthChanged(QQuickItem *item) override;
     void itemImplicitHeightChanged(QQuickItem *item) override;
 
+    void updatePolish() override;
+
     static QQuickSplitViewPrivate *get(QQuickSplitView *splitView);
 
 private:
@@ -127,7 +130,7 @@ public:
     QQuickSplitViewAttachedPrivate();
 
     void setView(QQuickSplitView *newView);
-    void layoutView();
+    void requestLayoutView();
 
     static QQuickSplitViewAttachedPrivate *get(QQuickSplitViewAttached *attached);
     static const QQuickSplitViewAttachedPrivate *get(const QQuickSplitViewAttached *attached);