Qwt User's Guide  5.2.3
qwt_thermo.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_THERMO_H
11 #define QWT_THERMO_H
12 
13 #include <qwidget.h>
14 #include <qcolor.h>
15 #include <qfont.h>
16 #include <qrect.h>
17 #include "qwt_global.h"
18 #include "qwt_abstract_scale.h"
19 
20 class QwtScaleDraw;
21 
69 class QWT_EXPORT QwtThermo: public QWidget, public QwtAbstractScale
70 {
71  Q_OBJECT
72 
73  Q_ENUMS( ScalePos )
74 
75  Q_PROPERTY( QBrush alarmBrush READ alarmBrush WRITE setAlarmBrush )
76  Q_PROPERTY( QColor alarmColor READ alarmColor WRITE setAlarmColor )
77  Q_PROPERTY( bool alarmEnabled READ alarmEnabled WRITE setAlarmEnabled )
78  Q_PROPERTY( double alarmLevel READ alarmLevel WRITE setAlarmLevel )
79  Q_PROPERTY( ScalePos scalePosition READ scalePosition
80  WRITE setScalePosition )
81  Q_PROPERTY( int borderWidth READ borderWidth WRITE setBorderWidth )
82  Q_PROPERTY( QBrush fillBrush READ fillBrush WRITE setFillBrush )
83  Q_PROPERTY( QColor fillColor READ fillColor WRITE setFillColor )
84  Q_PROPERTY( double maxValue READ maxValue WRITE setMaxValue )
85  Q_PROPERTY( double minValue READ minValue WRITE setMinValue )
86  Q_PROPERTY( int pipeWidth READ pipeWidth WRITE setPipeWidth )
87  Q_PROPERTY( double value READ value WRITE setValue )
88 
89 public:
90  /*
91  Scale position. QwtThermo tries to enforce valid combinations of its
92  orientation and scale position:
93  - Qt::Horizonal combines with NoScale, TopScale and BottomScale
94  - Qt::Vertical combines with NoScale, LeftScale and RightScale
95 
96  \sa setOrientation(), setScalePosition()
97  */
98  enum ScalePos
99  {
100  NoScale,
101  LeftScale,
102  RightScale,
103  TopScale,
104  BottomScale
105  };
106 
107  explicit QwtThermo(QWidget *parent = NULL);
108 #if QT_VERSION < 0x040000
109  explicit QwtThermo(QWidget *parent, const char *name);
110 #endif
111  virtual ~QwtThermo();
112 
113  void setOrientation(Qt::Orientation o, ScalePos s);
114 
115  void setScalePosition(ScalePos s);
116  ScalePos scalePosition() const;
117 
118  void setBorderWidth(int w);
119  int borderWidth() const;
120 
121  void setFillBrush(const QBrush &b);
122  const QBrush &fillBrush() const;
123 
124  void setFillColor(const QColor &c);
125  const QColor &fillColor() const;
126 
127  void setAlarmBrush(const QBrush &b);
128  const QBrush &alarmBrush() const;
129 
130  void setAlarmColor(const QColor &c);
131  const QColor &alarmColor() const;
132 
133  void setAlarmLevel(double v);
134  double alarmLevel() const;
135 
136  void setAlarmEnabled(bool tf);
137  bool alarmEnabled() const;
138 
139  void setPipeWidth(int w);
140  int pipeWidth() const;
141 
142  void setMaxValue(double v);
143  double maxValue() const;
144 
145  void setMinValue(double v);
146  double minValue() const;
147 
148  double value() const;
149 
150  void setRange(double vmin, double vmax, bool lg = false);
151  void setMargin(int m);
152 
153  virtual QSize sizeHint() const;
154  virtual QSize minimumSizeHint() const;
155 
156  void setScaleDraw(QwtScaleDraw *);
157  const QwtScaleDraw *scaleDraw() const;
158 
159 public slots:
160  void setValue(double val);
161 
162 protected:
163  void draw(QPainter *p, const QRect& update_rect);
164  void drawThermo(QPainter *p);
165  void layoutThermo( bool update = true );
166  virtual void scaleChange();
167  virtual void fontChange(const QFont &oldFont);
168 
169  virtual void paintEvent(QPaintEvent *e);
170  virtual void resizeEvent(QResizeEvent *e);
171 
172  QwtScaleDraw *scaleDraw();
173 
174 private:
175  void initThermo();
176  int transform(double v) const;
177 
178  class PrivateData;
179  PrivateData *d_data;
180 };
181 
182 #endif
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