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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "blureffect.h"
+
+#include <QDebug>
+
+BlurEffect::BlurEffect(QObject *parent)
+ : QGraphicsBlurEffect()
+ , m_baseLine(200)
+{
+}
+
+void BlurEffect::adjustForItem(const QGraphicsItem *item)
+{
+ qreal y = m_baseLine - item->pos().y();
+ qreal radius = qBound(0.0, y / 32, 16.0);
+ setBlurRadius(radius);
+}
+
+QRectF BlurEffect::boundingRectFor(const QGraphicsItem *item)
+{
+ adjustForItem(item);
+ return QGraphicsBlurEffect::boundingRectFor(item);
+}
+
+void BlurEffect::drawItem(QGraphicsItem *item, QPainter *painter,
+ const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+ adjustForItem(item);
+ QGraphicsBlurEffect::drawItem(item, painter, option, widget);
+}