qwt_polar_curve.h

/******************************************************************************
 * QwtPolar Widget Library
 * Copyright (C) 2008   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_POLAR_CURVE_H
#define QWT_POLAR_CURVE_H
 
#include "qwt_global.h"
#include "qwt_polar_item.h"
#include "qwt_point_polar.h"
#include "qwt_series_data.h"
 
class QPainter;
class QwtSymbol;
class QwtCurveFitter;
 
class QWT_EXPORT QwtPolarCurve : public QwtPolarItem
{
public:
    enum CurveStyle
    {
        NoCurve,
 
        Lines,
 
        UserCurve = 100
    };
 
    enum LegendAttribute
    {
        LegendShowLine = 0x01,
 
        LegendShowSymbol = 0x02
    };
 
    Q_DECLARE_FLAGS(LegendAttributes, LegendAttribute)
 
    
    explicit QwtPolarCurve();
    explicit QwtPolarCurve(const QwtText& title);
    explicit QwtPolarCurve(const QString& title);
 
    virtual ~QwtPolarCurve();
 
    virtual int rtti() const override;
 
    void setLegendAttribute(LegendAttribute, bool on = true);
    bool testLegendAttribute(LegendAttribute) const;
 
    void setData(QwtSeriesData< QwtPointPolar >* data);
    const QwtSeriesData< QwtPointPolar >* data() const;
 
    size_t dataSize() const;
    QwtPointPolar sample(int i) const;
 
    void setPen(const QPen&);
    const QPen& pen() const;
 
    void setStyle(CurveStyle style);
    CurveStyle style() const;
 
    void setSymbol(QwtSymbol*);
    const QwtSymbol* symbol() const;
 
    void setCurveFitter(QwtCurveFitter*);
    QwtCurveFitter* curveFitter() const;
 
    virtual void draw(QPainter* p,
                      const QwtScaleMap& azimuthMap,
                      const QwtScaleMap& radialMap,
                      const QPointF& pole,
                      double radius,
                      const QRectF& canvasRect) const override;
 
    virtual void
    draw(QPainter* p, const QwtScaleMap& azimuthMap, const QwtScaleMap& radialMap, const QPointF& pole, int from, int to) const;
 
    virtual QwtInterval boundingInterval(int scaleId) const override;
 
    virtual QwtGraphic legendIcon(int index, const QSizeF&) const override;
 
protected:
    void init();
 
    virtual void drawCurve(QPainter*,
                           int style,
                           const QwtScaleMap& azimuthMap,
                           const QwtScaleMap& radialMap,
                           const QPointF& pole,
                           int from,
                           int to) const;
 
    virtual void drawSymbols(QPainter*,
                             const QwtSymbol&,
                             const QwtScaleMap& azimuthMap,
                             const QwtScaleMap& radialMap,
                             const QPointF& pole,
                             int from,
                             int to) const;
 
    void
    drawLines(QPainter*, const QwtScaleMap& azimuthMap, const QwtScaleMap& radialMap, const QPointF& pole, int from, int to) const;
 
private:
    QwtSeriesData< QwtPointPolar >* m_series;
 
    class PrivateData;
    PrivateData* m_data;
};
 
inline const QwtSeriesData< QwtPointPolar >* QwtPolarCurve::data() const
{
    return m_series;
}
 
inline QwtPointPolar QwtPolarCurve::sample(int i) const
{
    return m_series->sample(i);
}
 
Q_DECLARE_OPERATORS_FOR_FLAGS(QwtPolarCurve::LegendAttributes)
 
#endif