Qwt User's Guide  5.2.3
qwt_counter.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 // vim: expandtab
11 
12 #ifndef QWT_COUNTER_H
13 #define QWT_COUNTER_H
14 
15 #include <qwidget.h>
16 #include "qwt_global.h"
17 #include "qwt_double_range.h"
18 
60 class QWT_EXPORT QwtCounter : public QWidget, public QwtDoubleRange
61 {
62  Q_OBJECT
63 
64  Q_PROPERTY( int numButtons READ numButtons WRITE setNumButtons )
65  Q_PROPERTY( double basicstep READ step WRITE setStep )
66  Q_PROPERTY( double minValue READ minVal WRITE setMinValue )
67  Q_PROPERTY( double maxValue READ maxVal WRITE setMaxValue )
68  Q_PROPERTY( int stepButton1 READ stepButton1 WRITE setStepButton1 )
69  Q_PROPERTY( int stepButton2 READ stepButton2 WRITE setStepButton2 )
70  Q_PROPERTY( int stepButton3 READ stepButton3 WRITE setStepButton3 )
71  Q_PROPERTY( double value READ value WRITE setValue )
72  Q_PROPERTY( bool editable READ editable WRITE setEditable )
73 
74 public:
79  enum Button
80  {
81  Button1,
82  Button2,
83  Button3,
84  ButtonCnt
85  };
86 
87  explicit QwtCounter(QWidget *parent = NULL);
88 #if QT_VERSION < 0x040000
89  explicit QwtCounter(QWidget *parent, const char *name);
90 #endif
91  virtual ~QwtCounter();
92 
93  bool editable() const;
94  void setEditable(bool);
95 
96  void setNumButtons(int n);
97  int numButtons() const;
98 
99  void setIncSteps(QwtCounter::Button btn, int nSteps);
100  int incSteps(QwtCounter::Button btn) const;
101 
102  virtual void setValue(double);
103  virtual QSize sizeHint() const;
104 
105  virtual void polish();
106 
107  // a set of dummies to help the designer
108 
109  double step() const;
110  void setStep(double s);
111  double minVal() const;
112  void setMinValue(double m);
113  double maxVal() const;
114  void setMaxValue(double m);
115  void setStepButton1(int nSteps);
116  int stepButton1() const;
117  void setStepButton2(int nSteps);
118  int stepButton2() const;
119  void setStepButton3(int nSteps);
120  int stepButton3() const;
121  virtual double value() const;
122 
123 signals:
128  void buttonReleased (double value);
129 
134  void valueChanged (double value);
135 
136 protected:
137  virtual bool event(QEvent *);
138  virtual void wheelEvent(QWheelEvent *);
139  virtual void keyPressEvent(QKeyEvent *);
140  virtual void rangeChange();
141 
142 private slots:
143  void btnReleased();
144  void btnClicked();
145  void textChanged();
146 
147 private:
148  void initCounter();
149  void updateButtons();
150  void showNum(double);
151  virtual void valueChange();
152 
153  class PrivateData;
154  PrivateData *d_data;
155 };
156 
157 #endif
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