scroller_p.h
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CLexer
Michal Klocek
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r855 | /**************************************************************************** | ||
| ** | ||||
Titta Heikkala
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r2688 | ** Copyright (C) 2014 Digia Plc | ||
|
Michal Klocek
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r855 | ** All rights reserved. | ||
Titta Heikkala
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r2740 | ** For any questions to Digia, please use contact form at http://qt.io | ||
|
Michal Klocek
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r855 | ** | ||
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Titta Heikkala
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r2740 | ** This file is part of the Qt Charts module. | ||
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Michal Klocek
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r855 | ** | ||
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Titta Heikkala
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r2740 | ** Licensees holding valid commercial license for Qt may use this file in | ||
| ** accordance with the Qt License Agreement provided with the Software | ||||
| ** or, alternatively, in accordance with the terms contained in a written | ||||
| ** agreement between you and Digia. | ||||
|
Michal Klocek
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r855 | ** | ||
| ** If you have questions regarding the use of this file, please use | ||||
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Titta Heikkala
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r2740 | ** contact form at http://qt.io | ||
|
Michal Klocek
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r855 | ** | ||
| ****************************************************************************/ | ||||
| // W A R N I N G | ||||
| // ------------- | ||||
| // | ||||
Miikka Heikkinen
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r2574 | // This file is not part of the Qt Enterprise Chart API. It exists purely as an | ||
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Michal Klocek
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r855 | // implementation detail. This header file may change from version to | ||
| // version without notice, or even be removed. | ||||
| // | ||||
| // We mean it. | ||||
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Michal Klocek
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r969 | #ifndef SCROLLER_P_H | ||
| #define SCROLLER_P_H | ||||
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r855 | |||
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r2714 | #include <QtCharts/QChartGlobal> | ||
Samuli Piippo
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r2731 | #include <QtCore/QObject> | ||
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Titta Heikkala
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r2714 | #include <QtCore/QBasicTimer> | ||
| #include <QtCore/QTime> | ||||
| #include <QtCore/QPointF> | ||||
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r855 | |||
Christian Kandeler
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r2774 | QT_BEGIN_NAMESPACE | ||
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r855 | class QGraphicsSceneMouseEvent; | ||
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Christian Kandeler
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r2774 | QT_END_NAMESPACE | ||
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r855 | |||
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Titta Heikkala
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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Michal Klocek
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r855 | |||
| class Scroller; | ||||
| class QLegend; | ||||
| class ScrollTicker : public QObject | ||||
| { | ||||
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Michal Klocek
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r974 | Q_OBJECT | ||
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Michal Klocek
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r855 | public: | ||
Jani Honkonen
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r2097 | explicit ScrollTicker(Scroller *scroller, QObject *parent = 0); | ||
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Michal Klocek
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r855 | void start(int interval); | ||
| void stop(); | ||||
| protected: | ||||
| void timerEvent(QTimerEvent *event); | ||||
| private: | ||||
| QBasicTimer m_timer; | ||||
| Scroller *m_scroller; | ||||
| }; | ||||
| class Scroller | ||||
| { | ||||
| public: | ||||
| enum State { | ||||
| Idle, | ||||
sauimone
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r2199 | Pressed, | ||
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Michal Klocek
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r855 | Move, | ||
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sauimone
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r2189 | Scroll | ||
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r855 | }; | ||
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r859 | Scroller(); | ||
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r855 | virtual ~Scroller(); | ||
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Jani Honkonen
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r2104 | virtual void setOffset(const QPointF &point) = 0; | ||
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r859 | virtual QPointF offset() const = 0; | ||
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r855 | |||
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sauimone
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r2189 | void move(const QPointF &delta); | ||
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sauimone
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r2197 | void scrollTo(const QPointF &delta); | ||
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sauimone
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r2183 | |||
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sauimone
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r2199 | void handleMousePressEvent(QGraphicsSceneMouseEvent *event); | ||
| void handleMouseMoveEvent(QGraphicsSceneMouseEvent *event); | ||||
| void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *event); | ||||
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Michal Klocek
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r855 | void scrollTick(); | ||
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sauimone
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r2189 | private: | ||
| void startTicker(int interval); | ||||
| void stopTicker(); | ||||
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Michal Klocek
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r855 | private: | ||
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Jani Honkonen
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r2104 | void calculateSpeed(const QPointF &position); | ||
| void lowerSpeed(QPointF &speed, qreal maxSpeed = 100); | ||||
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Michal Klocek
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r855 | |||
| private: | ||||
| ScrollTicker m_ticker; | ||||
| QTime m_timeStamp; | ||||
| QPointF m_speed; | ||||
| QPointF m_fraction; | ||||
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sauimone
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r2189 | int m_timeTresholdMin; | ||
| int m_timeTresholdMax; | ||||
| State m_state; | ||||
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sauimone
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r2199 | QPointF m_pressPos; | ||
| QPointF m_lastPos; | ||||
| qreal m_treshold; | ||||
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Michal Klocek
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r855 | }; | ||
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Titta Heikkala
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r2712 | QT_CHARTS_END_NAMESPACE | ||
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Michal Klocek
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r855 | |||
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Jani Honkonen
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r1935 | #endif /* SCROLLER_P_H */ | ||