qwt_point_mapper.h

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/******************************************************************************
 * 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
 *****************************************************************************/
 
#ifndef QWT_POINT_MAPPER_H
#define QWT_POINT_MAPPER_H
 
#include "qwt_global.h"
 
class QwtScaleMap;
template< typename T > class QwtSeriesData;
class QPolygonF;
class QPointF;
class QRectF;
class QPolygon;
class QPen;
class QImage;
 
class QWT_EXPORT QwtPointMapper
{
  public:
    enum TransformationFlag
    {
        RoundPoints = 0x01,
 
        WeedOutPoints = 0x02,
 
        WeedOutIntermediatePoints = 0x04
    };
 
    Q_DECLARE_FLAGS( TransformationFlags, TransformationFlag )
 
    QwtPointMapper();
    ~QwtPointMapper();
 
    void setFlags( TransformationFlags );
    TransformationFlags flags() const;
 
    void setFlag( TransformationFlag, bool on = true );
    bool testFlag( TransformationFlag ) const;
 
    void setBoundingRect( const QRectF& );
    QRectF boundingRect() const;
 
    QPolygonF toPolygonF( const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QwtSeriesData< QPointF >* series, int from, int to ) const;
 
    QPolygon toPolygon( const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QwtSeriesData< QPointF >* series, int from, int to ) const;
 
    QPolygon toPoints( const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QwtSeriesData< QPointF >* series, int from, int to ) const;
 
    QPolygonF toPointsF( const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QwtSeriesData< QPointF >* series, int from, int to ) const;
 
    QImage toImage( const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QwtSeriesData< QPointF >* series, int from, int to,
        const QPen&, bool antialiased, uint numThreads ) const;
 
  private:
    Q_DISABLE_COPY(QwtPointMapper)
 
    class PrivateData;
    PrivateData* m_data;
};
 
Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPointMapper::TransformationFlags )
 
#endif