qwt_plot_intervalcurve.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_PLOT_INTERVAL_CURVE_H
#define QWT_PLOT_INTERVAL_CURVE_H
 
#include "qwt_global.h"
#include "qwt_plot_seriesitem.h"
 
class QwtIntervalSymbol;
template< typename T > class QwtSeriesData;
 
class QWT_EXPORT QwtPlotIntervalCurve
    : public QwtPlotSeriesItem
    , public QwtSeriesStore< QwtIntervalSample >
{
  public:
    enum CurveStyle
    {
        NoCurve,
 
        Tube,
 
        UserCurve = 100
    };
 
    enum PaintAttribute
    {
        ClipPolygons = 0x01,
 
        ClipSymbol   = 0x02
    };
 
    Q_DECLARE_FLAGS( PaintAttributes, PaintAttribute )
 
// Constructor
    explicit QwtPlotIntervalCurve( const QString& title = QString() );
 
    // Constructor with QwtText title
    explicit QwtPlotIntervalCurve( const QwtText& title );
 
    // Destructor
    virtual ~QwtPlotIntervalCurve();
 
    // Get the runtime type information
    virtual int rtti() const override;
 
    // Set paint attribute
    void setPaintAttribute( PaintAttribute, bool on = true );
 
    // Test paint attribute
    bool testPaintAttribute( PaintAttribute ) const;
 
// Set samples from a vector
    void setSamples( const QVector< QwtIntervalSample >& );
 
    // Set samples from a series data
    void setSamples( QwtSeriesData< QwtIntervalSample >* );
 
    // Set pen with color, width and style
    void setPen( const QColor&,
        qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
 
    // Set pen
    void setPen( const QPen& );
 
    // Get pen
    const QPen& pen() const;
 
// Set brush
    void setBrush( const QBrush& );
 
    // Get brush
    const QBrush& brush() const;
 
    // Set curve style
    void setStyle( CurveStyle style );
 
    // Get curve style
    CurveStyle style() const;
 
    // Set symbol
    void setSymbol( const QwtIntervalSymbol* );
 
    // Get symbol
    const QwtIntervalSymbol* symbol() const;
 
// Draw the series
    virtual void drawSeries( QPainter*,
        const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QRectF& canvasRect, int from, int to ) const override;
 
    // Get the bounding rectangle
    virtual QRectF boundingRect() const override;
 
    // Get the legend icon
    virtual QwtGraphic legendIcon(
        int index, const QSizeF& ) const override;
 
  protected:
 
void init();
 
virtual void drawTube( QPainter*,
    const QwtScaleMap& xMap, const QwtScaleMap& yMap,
    const QRectF& canvasRect, int from, int to ) const;
 
virtual void drawSymbols( QPainter*, const QwtIntervalSymbol&,
    const QwtScaleMap& xMap, const QwtScaleMap& yMap,
    const QRectF& canvasRect, int from, int to ) const;
 
  private:
    class PrivateData;
    PrivateData* m_data;
};
 
Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotIntervalCurve::PaintAttributes )
 
#endif