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-/****************************************************************************
-**
-** Copyright (C) 2014 Digia Plc
-** All rights reserved.
-** For any questions to Digia, please use contact form at http://qt.digia.com
-**
-** This file is part of the Qt Enterprise Charts Add-on.
-**
-** $QT_BEGIN_LICENSE$
-** Licensees holding valid Qt Enterprise licenses may use this file in
-** accordance with the Qt Enterprise License Agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and Digia.
-**
-** If you have questions regarding the use of this file, please use
-** contact form at http://qt.digia.com
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-// W A R N I N G
-// -------------
-//
-// This file is not part of the Qt Enterprise Chart 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.
-
-#ifndef SCROLLER_P_H
-#define SCROLLER_P_H
-
-#include "qchartglobal.h"
-#include <QBasicTimer>
-#include <QTime>
-#include <QPointF>
-
-class QGraphicsSceneMouseEvent;
-
-QTCOMMERCIALCHART_BEGIN_NAMESPACE
-
-class Scroller;
-class QLegend;
-
-class ScrollTicker : public QObject
-{
- Q_OBJECT
-public:
- explicit ScrollTicker(Scroller *scroller, QObject *parent = 0);
- void start(int interval);
- void stop();
-protected:
- void timerEvent(QTimerEvent *event);
-
-private:
- QBasicTimer m_timer;
- Scroller *m_scroller;
-};
-
-class Scroller
-{
-public:
- enum State {
- Idle,
- Pressed,
- Move,
- Scroll
- };
-
- Scroller();
- virtual ~Scroller();
-
- virtual void setOffset(const QPointF &point) = 0;
- virtual QPointF offset() const = 0;
-
- void move(const QPointF &delta);
- void scrollTo(const QPointF &delta);
-
- void handleMousePressEvent(QGraphicsSceneMouseEvent *event);
- void handleMouseMoveEvent(QGraphicsSceneMouseEvent *event);
- void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *event);
-
- void scrollTick();
-
-private:
- void startTicker(int interval);
- void stopTicker();
-
-private:
- void calculateSpeed(const QPointF &position);
- void lowerSpeed(QPointF &speed, qreal maxSpeed = 100);
-
-private:
- ScrollTicker m_ticker;
- QTime m_timeStamp;
- QPointF m_speed;
- QPointF m_fraction;
- int m_timeTresholdMin;
- int m_timeTresholdMax;
-
- State m_state;
- QPointF m_pressPos;
- QPointF m_lastPos;
- qreal m_treshold;
-};
-
-QTCOMMERCIALCHART_END_NAMESPACE
-
-#endif /* SCROLLER_P_H */