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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module 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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef ANIMATION_H
#define ANIMATION_H
#include <QtGui>
#include <QtCore/qpropertyanimation.h>
class Animation : public QPropertyAnimation {
public:
enum PathType {
LinearPath,
CirclePath,
NPathTypes
};
Animation(QObject *target, const QByteArray &prop)
: QPropertyAnimation(target, prop)
{
setPathType(LinearPath);
}
void setPathType(PathType pathType)
{
if (pathType >= NPathTypes)
qWarning("Unknown pathType %d", pathType);
m_pathType = pathType;
m_path = QPainterPath();
}
void updateCurrentTime(int msecs)
{
if (m_pathType == CirclePath) {
if (m_path.isEmpty()) {
QPointF to = endValue().toPointF();
QPointF from = startValue().toPointF();
m_path.moveTo(from);
m_path.addEllipse(QRectF(from, to));
}
int dura = duration();
const qreal progress = ((dura == 0) ? 1 : ((((currentTime() - 1) % dura) + 1) / qreal(dura)));
qreal easedProgress = easingCurve().valueForProgress(progress);
if (easedProgress > 1.0) {
easedProgress -= 1.0;
} else if (easedProgress < 0) {
easedProgress += 1.0;
}
QPointF pt = m_path.pointAtPercent(easedProgress);
updateCurrentValue(pt);
emit valueChanged(pt);
} else {
QPropertyAnimation::updateCurrentTime(msecs);
}
}
QPainterPath m_path;
PathType m_pathType;
};
#endif // ANIMATION_H
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