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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSCROLLERPROPERTIES_H
#define QSCROLLERPROPERTIES_H
#include <QtCore/QScopedPointer>
#include <QtCore/QMetaType>
#include <QtCore/QVariant>
QT_BEGIN_NAMESPACE
class QScroller;
class QScrollerPrivate;
class QScrollerPropertiesPrivate;
class Q_WIDGETS_EXPORT QScrollerProperties
{
public:
QScrollerProperties();
QScrollerProperties(const QScrollerProperties &sp);
QScrollerProperties &operator=(const QScrollerProperties &sp);
virtual ~QScrollerProperties();
bool operator==(const QScrollerProperties &sp) const;
bool operator!=(const QScrollerProperties &sp) const;
static void setDefaultScrollerProperties(const QScrollerProperties &sp);
static void unsetDefaultScrollerProperties();
enum OvershootPolicy
{
OvershootWhenScrollable,
OvershootAlwaysOff,
OvershootAlwaysOn
};
enum FrameRates {
Standard,
Fps60,
Fps30,
Fps20
};
enum ScrollMetric
{
MousePressEventDelay, // qreal [s]
DragStartDistance, // qreal [m]
DragVelocitySmoothingFactor, // qreal [0..1/s] (complex calculation involving time) v = v_new* DASF + v_old * (1-DASF)
AxisLockThreshold, // qreal [0..1] atan(|min(dx,dy)|/|max(dx,dy)|)
ScrollingCurve, // QEasingCurve
DecelerationFactor, // slope of the curve
MinimumVelocity, // qreal [m/s]
MaximumVelocity, // qreal [m/s]
MaximumClickThroughVelocity, // qreal [m/s]
AcceleratingFlickMaximumTime, // qreal [s]
AcceleratingFlickSpeedupFactor, // qreal [1..]
SnapPositionRatio, // qreal [0..1]
SnapTime, // qreal [s]
OvershootDragResistanceFactor, // qreal [0..1]
OvershootDragDistanceFactor, // qreal [0..1]
OvershootScrollDistanceFactor, // qreal [0..1]
OvershootScrollTime, // qreal [s]
HorizontalOvershootPolicy, // enum OvershootPolicy
VerticalOvershootPolicy, // enum OvershootPolicy
FrameRate, // enum FrameRates
ScrollMetricCount
};
QVariant scrollMetric(ScrollMetric metric) const;
void setScrollMetric(ScrollMetric metric, const QVariant &value);
protected:
QScopedPointer<QScrollerPropertiesPrivate> d;
private:
QScrollerProperties(QScrollerPropertiesPrivate &dd);
friend class QScrollerPropertiesPrivate;
friend class QScroller;
friend class QScrollerPrivate;
};
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QScrollerProperties::OvershootPolicy)
Q_DECLARE_METATYPE(QScrollerProperties::FrameRates)
#endif // QSCROLLERPROPERTIES_H
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