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| |
| #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 |
| |
| Q_DECLARE_METATYPE(QScrollerProperties::OvershootPolicy) |
| Q_DECLARE_METATYPE(QScrollerProperties::FrameRates) |
| |
| #endif // QSCROLLERPROPERTIES_H |