scroller_p.h
106 lines
| 2.4 KiB
| text/x-c
|
CLexer
/ src / scroller_p.h
Michal Klocek
|
r855 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2012 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 Commercial Charts Add-on. | ||||
| ** | ||||
| ** $QT_BEGIN_LICENSE$ | ||||
| ** Licensees holding valid Qt Commercial licenses may use this file in | ||||
| ** accordance with the Qt Commercial 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 QtCommercial 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 | ||||
| { | ||||
| public: | ||||
| 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, | ||||
| Stop | ||||
| }; | ||||
|
Michal Klocek
|
r859 | Scroller(); | ||
|
Michal Klocek
|
r855 | virtual ~Scroller(); | ||
|
Michal Klocek
|
r859 | virtual void setOffset(const QPointF& point) = 0; | ||
| virtual QPointF offset() const = 0; | ||||
|
Michal Klocek
|
r855 | |||
| public: | ||||
| void scrollTick(); | ||||
| public: | ||||
| void mousePressEvent(QGraphicsSceneMouseEvent* event); | ||||
| void mouseMoveEvent(QGraphicsSceneMouseEvent* event); | ||||
| void mouseReleaseEvent(QGraphicsSceneMouseEvent* event); | ||||
| private: | ||||
| void calculateSpeed(const QPointF& position); | ||||
| void lowerSpeed(QPointF& speed,qreal maxSpeed=100); | ||||
| private: | ||||
| ScrollTicker m_ticker; | ||||
| State m_state; | ||||
| QTime m_timeStamp; | ||||
| QPointF m_press; | ||||
| QPointF m_offset; | ||||
| QPointF m_speed; | ||||
| QPointF m_distance; | ||||
| QPointF m_fraction; | ||||
| int m_moveThreshold; | ||||
| int m_timeTreshold; | ||||
| }; | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||
| #endif /* SCROLLER_P_H_ */ | ||||