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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QSCROLLERPROPERTIES_H
#define QSCROLLERPROPERTIES_H
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtCore/QScopedPointer>
#include <QtCore/QMetaType>
#include <QtCore/QVariant>
QT_REQUIRE_CONFIG(scroller);
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
QT_DECL_METATYPE_EXTERN_TAGGED(QScrollerProperties::OvershootPolicy,
QScrollerProperties__OvershootPolicy, Q_WIDGETS_EXPORT)
QT_DECL_METATYPE_EXTERN_TAGGED(QScrollerProperties::FrameRates,
QScrollerProperties__FrameRates, Q_WIDGETS_EXPORT)
#endif // QSCROLLERPROPERTIES_H
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