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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 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 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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