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qwt_point_mapper.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
*****************************************************************************/
#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
QwtPointMapper
A helper class for translating a series of points.
Definition qwt_point_mapper.h:33
QwtPointMapper::TransformationFlag
TransformationFlag
Flags affecting the transformation process.
Definition qwt_point_mapper.h:40
QwtPointMapper::TransformationFlags
QFlags< TransformationFlag > TransformationFlags
Definition qwt_point_mapper.h:71
QwtScaleMap
A scale map.
Definition qwt_scale_map.h:27
QwtSeriesData
Abstract interface for iterating over samples.
Definition qwt_series_data.h:50