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qwt_thermo.h

00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
00002  * Qwt Widget Library
00003  * Copyright (C) 1997   Josef Wilgen
00004  * Copyright (C) 2002   Uwe Rathmann
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the Qwt License, Version 1.0
00008  *****************************************************************************/
00009 
00010 #ifndef QWT_THERMO_H
00011 #define QWT_THERMO_H
00012 
00013 #include <qwidget.h>
00014 #include <qcolor.h>
00015 #include <qfont.h>
00016 #include <qrect.h>
00017 #include "qwt_global.h"
00018 #include "qwt_abstract_scale.h"
00019 
00064 class QWT_EXPORT QwtThermo: public QWidget, public QwtAbstractScale
00065 {
00066     Q_OBJECT
00067 
00068     Q_ENUMS( ScalePos )
00069 
00070     Q_PROPERTY( QBrush alarmBrush READ alarmBrush WRITE setAlarmBrush )
00071     Q_PROPERTY( QColor alarmColor READ alarmColor WRITE setAlarmColor )
00072     Q_PROPERTY( bool alarmEnabled READ alarmEnabled WRITE setAlarmEnabled )
00073     Q_PROPERTY( double alarmLevel READ alarmLevel WRITE setAlarmLevel )
00074     Q_PROPERTY( ScalePos scalePosition READ scalePosition
00075         WRITE setScalePosition )
00076     Q_PROPERTY( int borderWidth READ borderWidth WRITE setBorderWidth )
00077     Q_PROPERTY( QBrush fillBrush READ fillBrush WRITE setFillBrush )
00078     Q_PROPERTY( QColor fillColor READ fillColor WRITE setFillColor )
00079     Q_PROPERTY( double maxValue READ maxValue WRITE setMaxValue )
00080     Q_PROPERTY( double minValue READ minValue WRITE setMinValue )
00081     Q_PROPERTY( int pipeWidth READ pipeWidth WRITE setPipeWidth )
00082     Q_PROPERTY( double value READ value WRITE setValue )
00083 
00084 public:
00085     /*
00086       Scale position. QwtThermo tries to enforce valid combinations of its
00087       orientation and scale position:
00088       - Qt::Horizonal combines with None, Top and Bottom
00089       - Qt::Vertical combines with None, Left and Right
00090       
00091       \sa QwtThermo::setOrientation, QwtThermo::setScalePosition
00092     */
00093     enum ScalePos {None, Left, Right, Top, Bottom};
00094 
00095     explicit QwtThermo(QWidget *parent = NULL);
00096     virtual ~QwtThermo();
00097 
00098     void setOrientation(Qt::Orientation o, ScalePos s);
00099 
00100     void setScalePosition(ScalePos s);
00101     ScalePos scalePosition() const;
00102 
00103     void setBorderWidth(int w);
00104     int borderWidth() const;
00105 
00106     void setFillBrush(const QBrush &b);
00107     const QBrush &fillBrush() const;
00108 
00109     void setFillColor(const QColor &c);
00110     const QColor &fillColor() const;
00111  
00112     void setAlarmBrush(const QBrush &b);
00113     const QBrush &alarmBrush() const;
00114 
00115     void setAlarmColor(const QColor &c);
00116     const QColor &alarmColor() const;
00117 
00118     void setAlarmLevel(double v);
00119     double alarmLevel() const;
00120 
00121     void setAlarmEnabled(bool tf);
00122     bool alarmEnabled() const;
00123 
00124     void setPipeWidth(int w);
00125     int pipeWidth() const;
00126 
00127     void setMaxValue(double v);
00128     double maxValue() const;
00129 
00130     void setMinValue(double v);
00131     double minValue() const;
00132 
00133     double value() const;
00134 
00135     void setRange(double vmin, double vmax, bool lg = false);
00136     void setMargin(int m);
00137 
00138     virtual QSize sizeHint() const;
00139     virtual QSize minimumSizeHint() const;
00140 
00141 public slots:
00142     void setValue(double val);
00143     
00144 protected:
00145     void draw(QPainter *p, const QRect& update_rect);
00146     void drawThermo(QPainter *p);
00147     void layoutThermo( bool update = true );
00148     virtual void scaleChange();
00149     virtual void fontChange(const QFont &oldFont);
00150 
00151     virtual void paintEvent(QPaintEvent *e);
00152     virtual void resizeEvent(QResizeEvent *e);
00153 
00154 private:
00155     int transform(double v) const;
00156     
00157     class PrivateData;
00158     PrivateData *d_data;
00159 };
00160 
00161 #endif

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