/****************************************************************************+
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**+
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** Copyright (C) 2010 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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**+
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** This file is part of the QtCore module of the Qt Toolkit.+
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**+
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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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** this package.+
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**+
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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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**+
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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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**+
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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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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef ANIMATION_H+
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#define ANIMATION_H+
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+
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#include <QtGui>+
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+
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#include <QtCore/qpropertyanimation.h>+
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+
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class Animation : public QPropertyAnimation {+
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public:+
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    enum PathType {+
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        LinearPath,+
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        CirclePath,+
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        NPathTypes+
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    };+
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    Animation(QObject *target, const QByteArray &prop)+
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        : QPropertyAnimation(target, prop)+
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    {+
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        setPathType(LinearPath);+
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    }+
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+
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    void setPathType(PathType pathType)+
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    {+
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        if (pathType >= NPathTypes)+
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            qWarning("Unknown pathType %d", pathType);+
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+
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        m_pathType = pathType;+
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        m_path = QPainterPath();+
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    }+
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+
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    void updateCurrentTime(int currentTime)+
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    {+
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        if (m_pathType == CirclePath) {+
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            if (m_path.isEmpty()) {+
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                QPointF to = endValue().toPointF();+
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                QPointF from = startValue().toPointF();+
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                m_path.moveTo(from);+
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                m_path.addEllipse(QRectF(from, to));+
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            }+
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            int dura = duration();+
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            const qreal progress = ((dura == 0) ? 1 : ((((currentTime - 1) % dura) + 1) / qreal(dura)));+
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+
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            qreal easedProgress = easingCurve().valueForProgress(progress);+
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            if (easedProgress > 1.0) {+
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                easedProgress -= 1.0;+
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            } else if (easedProgress < 0) {+
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                easedProgress += 1.0;+
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            }+
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            QPointF pt = m_path.pointAtPercent(easedProgress);+
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            updateCurrentValue(pt);+
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            emit valueChanged(pt);+
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        } else {+
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            QPropertyAnimation::updateCurrentTime(currentTime);+
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        }+
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    }+
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+
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    QPainterPath m_path;+
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    PathType m_pathType;+
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};+
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+
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#endif // ANIMATION_H+
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