qwt_thermo.h

/******************************************************************************
 * 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
 *
 * Modified by ChenZongYan in 2024 <czy.t@163.com>
 *   Summary of major modifications (see ChangeLog.md for full history):
 *   1. CMake build system & C++11 throughout.
 *   2. Core panner/ zoomer refactored:
 *        - QwtPanner → QwtCachePanner (pixmap-cache version)
 *        - New real-time QwtPlotPanner derived from QwtPicker.
 *   3. Zoomer supports multi-axis.
 *   4. Parasite-plot framework:
 *        - QwtFigure, QwtPlotParasiteLayout, QwtPlotTransparentCanvas,
 *        - QwtPlotScaleEventDispatcher, built-in pan/zoom on axis.
 *   5. New picker: QwtPlotSeriesDataPicker (works with date axis).
 *   6. Raster & color-map extensions:
 *        - QwtGridRasterData (2-D table + interpolation)
 *        - QwtLinearColorMap::stopColors(), stopPos() API rename.
 *   7. Bar-chart: expose pen/brush control.
 *   8. Amalgamated build: single QwtPlot.h / QwtPlot.cpp pair in src-amalgamate.
 *****************************************************************************/
 
#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;
 
class QWT_EXPORT QwtThermo : public QwtAbstractScale
{
    Q_OBJECT
 
    Q_ENUMS( ScalePosition )
    Q_ENUMS( OriginMode )
 
    Q_PROPERTY( Qt::Orientation orientation
        READ orientation WRITE setOrientation )
    Q_PROPERTY( ScalePosition scalePosition
        READ scalePosition WRITE setScalePosition )
    Q_PROPERTY( OriginMode originMode READ originMode WRITE setOriginMode )
 
    Q_PROPERTY( bool alarmEnabled READ alarmEnabled WRITE setAlarmEnabled )
    Q_PROPERTY( double alarmLevel READ alarmLevel WRITE setAlarmLevel )
    Q_PROPERTY( double origin READ origin WRITE setOrigin )
    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 USER true )
 
  public:
 
    enum ScalePosition
    {
        NoScale,
 
        LeadingScale,
 
        TrailingScale
    };
 
    enum OriginMode
    {
        OriginMinimum,
 
        OriginMaximum,
 
        OriginCustom
    };
 
    // Constructor
    explicit QwtThermo( QWidget* parent = nullptr );
    // Destructor
    virtual ~QwtThermo();
 
    // Set the orientation
    void setOrientation( Qt::Orientation );
    // Return the orientation
    Qt::Orientation orientation() const;
 
    // Set the scale position
    void setScalePosition( ScalePosition );
    // Return the scale position
    ScalePosition scalePosition() const;
 
    // Set the spacing
    void setSpacing( int );
    // Return the spacing
    int spacing() const;
 
    // Set the border width
    void setBorderWidth( int );
    // Return the border width
    int borderWidth() const;
 
    // Set the origin mode
    void setOriginMode( OriginMode );
    // Return the origin mode
    OriginMode originMode() const;
 
    // Set the origin
    void setOrigin( double );
    // Return the origin
    double origin() const;
 
    // Set the fill brush
    void setFillBrush( const QBrush& );
    // Return the fill brush
    QBrush fillBrush() const;
 
    // Set the alarm brush
    void setAlarmBrush( const QBrush& );
    // Return the alarm brush
    QBrush alarmBrush() const;
 
    // Set the alarm level
    void setAlarmLevel( double );
    // Return the alarm level
    double alarmLevel() const;
 
    // Set whether alarm is enabled
    void setAlarmEnabled( bool );
    // Return whether alarm is enabled
    bool alarmEnabled() const;
 
    // Set the color map
    void setColorMap( QwtColorMap* );
    // Return the color map
    QwtColorMap* colorMap();
    // Return the color map (const version)
    const QwtColorMap* colorMap() const;
 
    // Set the pipe width
    void setPipeWidth( int );
    // Return the pipe width
    int pipeWidth() const;
 
    // Set the range flags
    void setRangeFlags( QwtInterval::BorderFlags );
    // Return the range flags
    QwtInterval::BorderFlags rangeFlags() const;
 
    // Return the current value
    double value() const;
 
    // Return the size hint
    virtual QSize sizeHint() const override;
    // Return the minimum size hint
    virtual QSize minimumSizeHint() const override;
 
    // Set the scale draw
    void setScaleDraw( QwtScaleDraw* );
    // Return the scale draw
    const QwtScaleDraw* scaleDraw() const;
 
  public Q_SLOTS:
    // Set the current value
    virtual void setValue( double );
 
  protected:
    virtual void drawLiquid( QPainter*, const QRect& ) const;
    virtual void scaleChange() override;
 
    virtual void paintEvent( QPaintEvent* ) override;
    virtual void resizeEvent( QResizeEvent* ) override;
    virtual void changeEvent( QEvent* ) override;
 
    QwtScaleDraw* scaleDraw();
 
    QRect pipeRect() const;
    QRect fillRect( const QRect& ) const;
    QRect alarmRect( const QRect& ) const;
 
  private:
    void layoutThermo( bool );
 
    class PrivateData;
    PrivateData* m_data;
};
 
#endif