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();
    virtual ~QwtPolarSpectrogram();
 
    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 QWT_OVERRIDE;
 
    virtual void draw( QPainter* painter,
        const QwtScaleMap& azimuthMap, const QwtScaleMap& radialMap,
        const QPointF& pole, double radius,
        const QRectF& canvasRect ) const QWT_OVERRIDE;
 
    virtual QwtInterval boundingInterval( int scaleId ) const QWT_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;
 
    class PrivateData;
    PrivateData* m_data;
};
 
Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPolarSpectrogram::PaintAttributes )
 
#endif