qwt_polar_spectrogram.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_SPECTROGRAM_H
#define QWT_POLAR_SPECTROGRAM_H
 
#include "qwt_global.h"
#include "qwt_polar_item.h"
#include <qimage.h>
 
class QwtRasterData;
class QwtColorMap;
 
class QWT_EXPORT QwtPolarSpectrogram : public QwtPolarItem
{
public:
    enum PaintAttribute
    {
        ApproximatedAtan = 0x01
    };
 
    Q_DECLARE_FLAGS(PaintAttributes, PaintAttribute)
 
    
    explicit QwtPolarSpectrogram();
    ~QwtPolarSpectrogram() override;
 
    void setData(QwtRasterData* data);
    const QwtRasterData* data() const;
 
    void setColorMap(QwtColorMap*);
    const QwtColorMap* colorMap() const;
 
    void setPaintAttribute(PaintAttribute, bool on = true);
    bool testPaintAttribute(PaintAttribute) const;
 
    virtual int rtti() const override;
 
    virtual void draw(QPainter* painter,
                      const QwtScaleMap& azimuthMap,
                      const QwtScaleMap& radialMap,
                      const QPointF& pole,
                      double radius,
                      const QRectF& canvasRect) const override;
 
    virtual QwtInterval boundingInterval(int scaleId) const override;
 
protected:
    virtual QImage
    renderImage(const QwtScaleMap& azimuthMap, const QwtScaleMap& radialMap, const QPointF& pole, const QRect& rect) const;
 
    virtual void renderTile(const QwtScaleMap& azimuthMap,
                            const QwtScaleMap& radialMap,
                            const QPointF& pole,
                            const QPoint& imagePos,
                            const QRect& tile,
                            QImage* image) const;
 
private:
    class TileInfo;
    void renderTileInfo(const QwtScaleMap&, const QwtScaleMap&, const QPointF& pole, TileInfo*) const;
 
    QWT_DECLARE_PRIVATE(QwtPolarSpectrogram)
};
 
Q_DECLARE_OPERATORS_FOR_FLAGS(QwtPolarSpectrogram::PaintAttributes)
 
#endif