From 4b7ba7d5209a041b85abf1e335ad7aceb2158454 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Erik=20Nilsen?= <bjorn.nilsen@nokia.com>
Date: Thu, 30 Jul 2009 01:51:29 +0200
Subject: Small optimization to QGraphicsEffectSource::boundingRect.

Don't bother asking for the childrenBoundingRect if the item has no
children.
---
 src/gui/graphicsview/qgraphicsitem.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index 5178d80..b26e038 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -9995,7 +9995,8 @@ int QGraphicsItemGroup::type() const
 QRectF QGraphicsItemEffectSourcePrivate::boundingRect(Qt::CoordinateSystem system) const
 {
     QRectF rect = item->boundingRect();
-    rect |= item->childrenBoundingRect();
+    if (!item->d_ptr->children.isEmpty())
+        rect |= item->childrenBoundingRect();
     if (info && system == Qt::DeviceCoordinates) {
         Q_ASSERT(info->transformPtr);
         return info->transformPtr->mapRect(rect);
-- 
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