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/****************************************************************************
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the examples of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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****************************************************************************/
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#include "blureffect.h"
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BlurEffect::BlurEffect(QGraphicsItem *item)
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: QGraphicsBlurEffect()
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, m_baseLine(200), item(item)
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void BlurEffect::adjustForItem()
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qreal y = m_baseLine - item->pos().y();
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qreal radius = qBound(qreal(0.0), y / 32, qreal(16.0));
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setBlurRadius(radius);
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QRectF BlurEffect::boundingRect() const
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const_cast<BlurEffect *>(this)->adjustForItem();
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return QGraphicsBlurEffect::boundingRect();
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void BlurEffect::draw(QPainter *painter, QGraphicsEffectSource *source)
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QGraphicsBlurEffect::draw(painter, source);