Qwt User's Guide  6.1.6
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 <qwidget.h>
15 
27 class QWT_EXPORT QwtWheel: public QWidget
28 {
29  Q_OBJECT
30 
31  Q_PROPERTY( Qt::Orientation orientation
32  READ orientation WRITE setOrientation )
33 
34  Q_PROPERTY( double value READ value WRITE setValue )
35  Q_PROPERTY( double minimum READ minimum WRITE setMinimum )
36  Q_PROPERTY( double maximum READ maximum WRITE setMaximum )
37 
38  Q_PROPERTY( double singleStep READ singleStep WRITE setSingleStep )
39  Q_PROPERTY( int pageStepCount READ pageStepCount WRITE setPageStepCount )
40  Q_PROPERTY( bool stepAlignment READ stepAlignment WRITE setStepAlignment )
41 
42  Q_PROPERTY( bool tracking READ isTracking WRITE setTracking )
43  Q_PROPERTY( bool wrapping READ wrapping WRITE setWrapping )
44  Q_PROPERTY( bool inverted READ isInverted WRITE setInverted )
45 
46  Q_PROPERTY( double mass READ mass WRITE setMass )
47  Q_PROPERTY( int updateInterval READ updateInterval WRITE setUpdateInterval )
48 
49  Q_PROPERTY( double totalAngle READ totalAngle WRITE setTotalAngle )
50  Q_PROPERTY( double viewAngle READ viewAngle WRITE setViewAngle )
51  Q_PROPERTY( int tickCount READ tickCount WRITE setTickCount )
52  Q_PROPERTY( int wheelWidth READ wheelWidth WRITE setWheelWidth )
53  Q_PROPERTY( int borderWidth READ borderWidth WRITE setBorderWidth )
54  Q_PROPERTY( int wheelBorderWidth READ wheelBorderWidth WRITE setWheelBorderWidth )
55 
56 public:
57  explicit QwtWheel( QWidget *parent = NULL );
58  virtual ~QwtWheel();
59 
60  double value() const;
61 
62  void setOrientation( Qt::Orientation );
63  Qt::Orientation orientation() const;
64 
65  double totalAngle() const;
66  double viewAngle() const;
67 
68  void setTickCount( int );
69  int tickCount() const;
70 
71  void setWheelWidth( int );
72  int wheelWidth() const;
73 
74  void setWheelBorderWidth( int );
75  int wheelBorderWidth() const;
76 
77  void setBorderWidth( int );
78  int borderWidth() const;
79 
80  void setInverted( bool );
81  bool isInverted() const;
82 
83  void setWrapping( bool );
84  bool wrapping() const;
85 
86  void setSingleStep( double );
87  double singleStep() const;
88 
89  void setPageStepCount( int );
90  int pageStepCount() const;
91 
92  void setStepAlignment( bool on );
93  bool stepAlignment() const;
94 
95  void setRange( double min, double max );
96 
97  void setMinimum( double );
98  double minimum() const;
99 
100  void setMaximum( double );
101  double maximum() const;
102 
103  void setUpdateInterval( int );
104  int updateInterval() const;
105 
106  void setTracking( bool );
107  bool isTracking() const;
108 
109  double mass() const;
110 
111 public Q_SLOTS:
112  void setValue( double );
113  void setTotalAngle ( double );
114  void setViewAngle( double );
115  void setMass( double );
116 
117 Q_SIGNALS:
118 
128  void valueChanged( double value );
129 
134  void wheelPressed();
135 
139  void wheelReleased();
140 
147  void wheelMoved( double value );
148 
149 protected:
150  virtual void paintEvent( QPaintEvent * );
151  virtual void mousePressEvent( QMouseEvent * );
152  virtual void mouseReleaseEvent( QMouseEvent * );
153  virtual void mouseMoveEvent( QMouseEvent * );
154  virtual void keyPressEvent( QKeyEvent * );
155  virtual void wheelEvent( QWheelEvent * );
156  virtual void timerEvent( QTimerEvent * );
157 
158  void stopFlying();
159 
160  QRect wheelRect() const;
161 
162  virtual QSize sizeHint() const;
163  virtual QSize minimumSizeHint() const;
164 
165  virtual void drawTicks( QPainter *, const QRectF & );
166  virtual void drawWheelBackground( QPainter *, const QRectF & );
167 
168  virtual double valueAt( const QPoint & ) const;
169 
170 private:
171  double alignedValue( double ) const;
172  double boundedValue( double ) const;
173 
174  class PrivateData;
175  PrivateData *d_data;
176 };
177 
178 #endif
QwtWheel::wheelPressed
void wheelPressed()
QwtWheel::wheelReleased
void wheelReleased()
QwtWheel::wheelMoved
void wheelMoved(double value)
QwtWheel::valueChanged
void valueChanged(double value)
Notify a change of value.
QwtWheel
The Wheel Widget.
Definition: qwt_wheel.h:28