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1 | /**************************************************************************** |
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1 | /**************************************************************************** | |
2 | ** |
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2 | ** | |
3 | ** Copyright (C) 2014 Digia Plc |
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3 | ** Copyright (C) 2014 Digia Plc | |
4 | ** All rights reserved. |
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4 | ** All rights reserved. | |
5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
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5 | ** For any questions to Digia, please use contact form at http://qt.digia.com | |
6 | ** |
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6 | ** | |
7 | ** This file is part of the Qt Enterprise Charts Add-on. |
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7 | ** This file is part of the Qt Enterprise Charts Add-on. | |
8 | ** |
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8 | ** | |
9 | ** $QT_BEGIN_LICENSE$ |
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9 | ** $QT_BEGIN_LICENSE$ | |
10 | ** Licensees holding valid Qt Enterprise licenses may use this file in |
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10 | ** Licensees holding valid Qt Enterprise licenses may use this file in | |
11 | ** accordance with the Qt Enterprise License Agreement provided with the |
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11 | ** accordance with the Qt Enterprise License Agreement provided with the | |
12 | ** Software or, alternatively, in accordance with the terms contained in |
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12 | ** Software or, alternatively, in accordance with the terms contained in | |
13 | ** a written agreement between you and Digia. |
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13 | ** a written agreement between you and Digia. | |
14 | ** |
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14 | ** | |
15 | ** If you have questions regarding the use of this file, please use |
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15 | ** If you have questions regarding the use of this file, please use | |
16 | ** contact form at http://qt.digia.com |
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16 | ** contact form at http://qt.digia.com | |
17 | ** $QT_END_LICENSE$ |
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17 | ** $QT_END_LICENSE$ | |
18 | ** |
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18 | ** | |
19 | ****************************************************************************/ |
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19 | ****************************************************************************/ | |
20 |
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20 | |||
21 | // W A R N I N G |
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21 | // W A R N I N G | |
22 | // ------------- |
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22 | // ------------- | |
23 | // |
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23 | // | |
24 | // This file is not part of the Qt Enterprise Chart API. It exists purely as an |
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24 | // This file is not part of the Qt Enterprise Chart API. It exists purely as an | |
25 | // implementation detail. This header file may change from version to |
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25 | // implementation detail. This header file may change from version to | |
26 | // version without notice, or even be removed. |
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26 | // version without notice, or even be removed. | |
27 | // |
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27 | // | |
28 | // We mean it. |
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28 | // We mean it. | |
29 |
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29 | |||
30 | #ifndef SCROLLER_P_H |
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30 | #ifndef SCROLLER_P_H | |
31 | #define SCROLLER_P_H |
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31 | #define SCROLLER_P_H | |
32 |
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32 | |||
33 | #include <QtCharts/QChartGlobal> |
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33 | #include <QtCharts/QChartGlobal> | |
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34 | #include <QtCore/QObject> | |||
34 | #include <QtCore/QBasicTimer> |
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35 | #include <QtCore/QBasicTimer> | |
35 | #include <QtCore/QTime> |
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36 | #include <QtCore/QTime> | |
36 | #include <QtCore/QPointF> |
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37 | #include <QtCore/QPointF> | |
37 |
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38 | |||
38 | class QGraphicsSceneMouseEvent; |
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39 | class QGraphicsSceneMouseEvent; | |
39 |
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40 | |||
40 | QT_CHARTS_BEGIN_NAMESPACE |
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41 | QT_CHARTS_BEGIN_NAMESPACE | |
41 |
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42 | |||
42 | class Scroller; |
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43 | class Scroller; | |
43 | class QLegend; |
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44 | class QLegend; | |
44 |
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45 | |||
45 | class ScrollTicker : public QObject |
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46 | class ScrollTicker : public QObject | |
46 | { |
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47 | { | |
47 | Q_OBJECT |
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48 | Q_OBJECT | |
48 | public: |
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49 | public: | |
49 | explicit ScrollTicker(Scroller *scroller, QObject *parent = 0); |
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50 | explicit ScrollTicker(Scroller *scroller, QObject *parent = 0); | |
50 | void start(int interval); |
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51 | void start(int interval); | |
51 | void stop(); |
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52 | void stop(); | |
52 | protected: |
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53 | protected: | |
53 | void timerEvent(QTimerEvent *event); |
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54 | void timerEvent(QTimerEvent *event); | |
54 |
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55 | |||
55 | private: |
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56 | private: | |
56 | QBasicTimer m_timer; |
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57 | QBasicTimer m_timer; | |
57 | Scroller *m_scroller; |
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58 | Scroller *m_scroller; | |
58 | }; |
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59 | }; | |
59 |
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60 | |||
60 | class Scroller |
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61 | class Scroller | |
61 | { |
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62 | { | |
62 | public: |
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63 | public: | |
63 | enum State { |
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64 | enum State { | |
64 | Idle, |
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65 | Idle, | |
65 | Pressed, |
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66 | Pressed, | |
66 | Move, |
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67 | Move, | |
67 | Scroll |
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68 | Scroll | |
68 | }; |
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69 | }; | |
69 |
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70 | |||
70 | Scroller(); |
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71 | Scroller(); | |
71 | virtual ~Scroller(); |
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72 | virtual ~Scroller(); | |
72 |
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73 | |||
73 | virtual void setOffset(const QPointF &point) = 0; |
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74 | virtual void setOffset(const QPointF &point) = 0; | |
74 | virtual QPointF offset() const = 0; |
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75 | virtual QPointF offset() const = 0; | |
75 |
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76 | |||
76 | void move(const QPointF &delta); |
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77 | void move(const QPointF &delta); | |
77 | void scrollTo(const QPointF &delta); |
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78 | void scrollTo(const QPointF &delta); | |
78 |
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79 | |||
79 | void handleMousePressEvent(QGraphicsSceneMouseEvent *event); |
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80 | void handleMousePressEvent(QGraphicsSceneMouseEvent *event); | |
80 | void handleMouseMoveEvent(QGraphicsSceneMouseEvent *event); |
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81 | void handleMouseMoveEvent(QGraphicsSceneMouseEvent *event); | |
81 | void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *event); |
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82 | void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *event); | |
82 |
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83 | |||
83 | void scrollTick(); |
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84 | void scrollTick(); | |
84 |
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85 | |||
85 | private: |
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86 | private: | |
86 | void startTicker(int interval); |
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87 | void startTicker(int interval); | |
87 | void stopTicker(); |
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88 | void stopTicker(); | |
88 |
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89 | |||
89 | private: |
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90 | private: | |
90 | void calculateSpeed(const QPointF &position); |
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91 | void calculateSpeed(const QPointF &position); | |
91 | void lowerSpeed(QPointF &speed, qreal maxSpeed = 100); |
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92 | void lowerSpeed(QPointF &speed, qreal maxSpeed = 100); | |
92 |
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93 | |||
93 | private: |
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94 | private: | |
94 | ScrollTicker m_ticker; |
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95 | ScrollTicker m_ticker; | |
95 | QTime m_timeStamp; |
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96 | QTime m_timeStamp; | |
96 | QPointF m_speed; |
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97 | QPointF m_speed; | |
97 | QPointF m_fraction; |
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98 | QPointF m_fraction; | |
98 | int m_timeTresholdMin; |
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99 | int m_timeTresholdMin; | |
99 | int m_timeTresholdMax; |
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100 | int m_timeTresholdMax; | |
100 |
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101 | |||
101 | State m_state; |
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102 | State m_state; | |
102 | QPointF m_pressPos; |
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103 | QPointF m_pressPos; | |
103 | QPointF m_lastPos; |
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104 | QPointF m_lastPos; | |
104 | qreal m_treshold; |
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105 | qreal m_treshold; | |
105 | }; |
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106 | }; | |
106 |
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107 | |||
107 | QT_CHARTS_END_NAMESPACE |
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108 | QT_CHARTS_END_NAMESPACE | |
108 |
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109 | |||
109 | #endif /* SCROLLER_P_H */ |
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110 | #endif /* SCROLLER_P_H */ |
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