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| |
| #ifndef QQUICKPOINTERMULTIHANDLER_H |
| #define QQUICKPOINTERMULTIHANDLER_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include "qquickitem.h" |
| #include "qevent.h" |
| #include "qquickhandlerpoint_p.h" |
| #include "qquickpointerdevicehandler_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QQuickMultiPointHandlerPrivate; |
| |
| class Q_QUICK_PRIVATE_EXPORT QQuickMultiPointHandler : public QQuickPointerDeviceHandler |
| { |
| Q_OBJECT |
| Q_PROPERTY(int minimumPointCount READ minimumPointCount WRITE setMinimumPointCount NOTIFY minimumPointCountChanged) |
| Q_PROPERTY(int maximumPointCount READ maximumPointCount WRITE setMaximumPointCount NOTIFY maximumPointCountChanged) |
| Q_PROPERTY(QQuickHandlerPoint centroid READ centroid NOTIFY centroidChanged) |
| |
| public: |
| explicit QQuickMultiPointHandler(QQuickItem *parent = nullptr, int minimumPointCount = 2, int maximumPointCount = -1); |
| |
| int minimumPointCount() const; |
| void setMinimumPointCount(int c); |
| |
| int maximumPointCount() const; |
| void setMaximumPointCount(int maximumPointCount); |
| |
| const QQuickHandlerPoint ¢roid() const; |
| |
| signals: |
| void minimumPointCountChanged(); |
| void maximumPointCountChanged(); |
| void centroidChanged(); |
| |
| protected: |
| struct PointData { |
| PointData() : id(0), angle(0) {} |
| PointData(quint64 id, qreal angle) : id(id), angle(angle) {} |
| quint64 id; |
| qreal angle; |
| }; |
| |
| bool wantsPointerEvent(QQuickPointerEvent *event) override; |
| void handlePointerEventImpl(QQuickPointerEvent *event) override; |
| void onActiveChanged() override; |
| void onGrabChanged(QQuickPointerHandler *grabber, QQuickEventPoint::GrabTransition transition, QQuickEventPoint *point) override; |
| QVector<QQuickHandlerPoint> ¤tPoints(); |
| QQuickHandlerPoint &mutableCentroid(); |
| bool hasCurrentPoints(QQuickPointerEvent *event); |
| QVector<QQuickEventPoint *> eligiblePoints(QQuickPointerEvent *event); |
| qreal averageTouchPointDistance(const QPointF &ref); |
| qreal averageStartingDistance(const QPointF &ref); |
| qreal averageTouchPointAngle(const QPointF &ref); |
| qreal averageStartingAngle(const QPointF &ref); |
| QVector<PointData> angles(const QPointF &ref) const; |
| static qreal averageAngleDelta(const QVector<PointData> &old, const QVector<PointData> &newAngles); |
| void acceptPoints(const QVector<QQuickEventPoint *> &points); |
| bool grabPoints(const QVector<QQuickEventPoint *> &points); |
| void moveTarget(QPointF pos); |
| |
| Q_DECLARE_PRIVATE(QQuickMultiPointHandler) |
| }; |
| |
| QT_END_NAMESPACE |
| |
| QML_DECLARE_TYPE(QQuickMultiPointHandler) |
| |
| #endif // QQUICKPOINTERMULTIHANDLER_H |