scroller_p.h
121 lines
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| text/x-c
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CLexer
Miikka Heikkinen
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r2854 | /**************************************************************************** | ||
Michal Klocek
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r855 | ** | ||
|
Miikka Heikkinen
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r2854 | ** Copyright (C) 2016 The Qt Company Ltd. | ||
| ** Contact: https://www.qt.io/licensing/ | ||||
|
Michal Klocek
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r855 | ** | ||
|
Miikka Heikkinen
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r2854 | ** This file is part of the Qt Charts module of the Qt Toolkit. | ||
|
Michal Klocek
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r855 | ** | ||
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Miikka Heikkinen
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r2854 | ** $QT_BEGIN_LICENSE:GPL$ | ||
Titta Heikkala
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r2845 | ** Commercial License Usage | ||
| ** Licensees holding valid commercial Qt licenses may use this file in | ||||
| ** accordance with the commercial license agreement provided with the | ||||
| ** Software or, alternatively, in accordance with the terms contained in | ||||
| ** a written agreement between you and The Qt Company. For licensing terms | ||||
|
Miikka Heikkinen
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r2854 | ** and conditions see https://www.qt.io/terms-conditions. For further | ||
| ** information use the contact form at https://www.qt.io/contact-us. | ||||
| ** | ||||
| ** GNU General Public License Usage | ||||
| ** Alternatively, this file may be used under the terms of the GNU | ||||
| ** General Public License version 3 or (at your option) any later version | ||||
| ** approved by the KDE Free Qt Foundation. The licenses are as published by | ||||
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 | ||||
| ** included in the packaging of this file. Please review the following | ||||
| ** information to ensure the GNU General Public License requirements will | ||||
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. | ||||
|
Michal Klocek
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r855 | ** | ||
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Titta Heikkala
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r2845 | ** $QT_END_LICENSE$ | ||
| ** | ||||
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Miikka Heikkinen
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r2854 | ****************************************************************************/ | ||
|
Michal Klocek
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r855 | |||
| // W A R N I N G | ||||
| // ------------- | ||||
| // | ||||
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Titta Heikkala
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r2807 | // This file is not part of the Qt 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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Michal Klocek
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r855 | |||
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Titta Heikkala
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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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Michal Klocek
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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 | |||
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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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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Michal Klocek
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r855 | }; | ||
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Michal Klocek
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r859 | Scroller(); | ||
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Michal Klocek
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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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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 */ | ||