qwt_thermo.h
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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
#ifndef QWT_THERMO_H
#define QWT_THERMO_H
#include "qwt_global.h"
#include "qwt_abstract_scale.h"
#include "qwt_interval.h"
class QwtScaleDraw;
class QwtColorMap;
/*!
\brief The Thermometer Widget
QwtThermo is a widget which displays a value in an interval. It supports:
- a horizontal or vertical layout;
- a range;
- a scale;
- an alarm level.
\image html sysinfo.png
The fill colors might be calculated from an optional color map
If no color map has been assigned QwtThermo uses the
following colors/brushes from the widget palette:
- QPalette::Base
Background of the pipe
- QPalette::ButtonText
Fill brush below the alarm level
- QPalette::Highlight
Fill brush for the values above the alarm level
- QPalette::WindowText
For the axis of the scale
- QPalette::Text
For the labels of the scale
*/
class QWT_EXPORT QwtThermo: public QwtAbstractScale
{
Q_OBJECT
Q_ENUMS( ScalePos )
Q_PROPERTY( bool alarmEnabled READ alarmEnabled WRITE setAlarmEnabled )
Q_PROPERTY( double alarmLevel READ alarmLevel WRITE setAlarmLevel )
Q_PROPERTY( ScalePos scalePosition READ scalePosition
WRITE setScalePosition )
Q_PROPERTY( int spacing READ spacing WRITE setSpacing )
Q_PROPERTY( int borderWidth READ borderWidth WRITE setBorderWidth )
Q_PROPERTY( int pipeWidth READ pipeWidth WRITE setPipeWidth )
Q_PROPERTY( double value READ value WRITE setValue )
public:
/*!
Scale position. QwtThermo tries to enforce valid combinations of its
orientation and scale position:
- Qt::Horizontal combines with NoScale, TopScale and BottomScale
- Qt::Vertical combines with NoScale, LeftScale and RightScale
\sa setOrientation(), setScalePosition()
*/
enum ScalePos
{
//! No scale
NoScale,
//! The scale is left of the pipe
LeftScale,
//! The scale is right of the pipe
RightScale,
//! The scale is above the pipe
TopScale,
//! The scale is below the pipe
BottomScale
};
explicit QwtThermo( QWidget *parent = NULL );
virtual ~QwtThermo();
void setOrientation( Qt::Orientation, ScalePos );
void setScalePosition( ScalePos s );
ScalePos scalePosition() const;
void setSpacing( int );
int spacing() const;
void setBorderWidth( int w );
int borderWidth() const;
void setFillBrush( const QBrush &b );
const QBrush &fillBrush() const;
void setAlarmBrush( const QBrush &b );
const QBrush &alarmBrush() const;
void setAlarmLevel( double v );
double alarmLevel() const;
void setAlarmEnabled( bool tf );
bool alarmEnabled() const;
void setColorMap( QwtColorMap * );
QwtColorMap *colorMap();
const QwtColorMap *colorMap() const;
void setPipeWidth( int w );
int pipeWidth() const;
void setRangeFlags( QwtInterval::BorderFlags );
QwtInterval::BorderFlags rangeFlags() const;
double value() const;
virtual QSize sizeHint() const;
virtual QSize minimumSizeHint() const;
void setScaleDraw( QwtScaleDraw * );
const QwtScaleDraw *scaleDraw() const;
public Q_SLOTS:
virtual void setValue( double val );
protected:
virtual void drawLiquid( QPainter *, const QRect & ) const;
virtual void scaleChange();
virtual void paintEvent( QPaintEvent * );
virtual void resizeEvent( QResizeEvent * );
virtual void changeEvent( QEvent * );
QwtScaleDraw *scaleDraw();
QRect pipeRect() const;
private:
void layoutThermo( bool );
class PrivateData;
PrivateData *d_data;
};
#endif