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(bool flatStyle READ flatStyle WRITE setFlatStyle)
    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
    ~QwtThermo() override;
 
    // 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 flat style
    void setFlatStyle(bool);
    // Return flat style
    bool flatStyle() 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);
 
    QWT_DECLARE_PRIVATE(QwtThermo)
};
 
#endif