Qwt User's Guide 5.2.3

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qwt_wheel.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10 #ifndef QWT_WHEEL_H
11 #define QWT_WHEEL_H
12
13 #include "qwt_global.h"
14 #include "qwt_abstract_slider.h"
15
25 class QWT_EXPORT QwtWheel : public QwtAbstractSlider
26 {
27 Q_OBJECT
28 Q_PROPERTY( double totalAngle READ totalAngle WRITE setTotalAngle )
29 Q_PROPERTY( double viewAngle READ viewAngle WRITE setViewAngle )
30 Q_PROPERTY( int tickCnt READ tickCnt WRITE setTickCnt )
31 Q_PROPERTY( int internalBorder READ internalBorder WRITE setInternalBorder )
32 Q_PROPERTY( double mass READ mass WRITE setMass )
33
34 public:
35 explicit QwtWheel(QWidget *parent = NULL);
36 #if QT_VERSION < 0x040000
37 explicit QwtWheel(QWidget *parent, const char *name);
38 #endif
39 virtual ~QwtWheel();
40
41 virtual void setOrientation(Qt::Orientation);
42
43 double totalAngle() const;
44 double viewAngle() const;
45 int tickCnt() const;
46 int internalBorder() const;
47
48 double mass() const;
49
50 void setTotalAngle (double angle);
51 void setTickCnt(int cnt);
52 void setViewAngle(double angle);
53 void setInternalBorder(int width);
54 void setMass(double val);
55 void setWheelWidth( int w );
56
57 virtual QSize sizeHint() const;
58 virtual QSize minimumSizeHint() const;
59
60 protected:
61 virtual void resizeEvent(QResizeEvent *e);
62 virtual void paintEvent(QPaintEvent *e);
63
64 void layoutWheel( bool update = true );
65 void draw(QPainter *, const QRect &);
66 void drawWheel(QPainter *, const QRect &);
67 void drawWheelBackground(QPainter *, const QRect &);
68 void setColorArray();
69
70 virtual void valueChange();
71 virtual void paletteChange( const QPalette &);
72
73 virtual double getValue(const QPoint &);
74 virtual void getScrollMode(const QPoint &,
75 int &scrollMode, int &direction);
76
77 private:
78 void initWheel();
79
80 class PrivateData;
81 PrivateData *d_data;
82 };
83
84 #endif