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89 lines
2.6 KiB
89 lines
2.6 KiB
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- ***************************** |
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* Qwt Widget Library |
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* Copyright (C) 1997 Josef Wilgen |
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* Copyright (C) 2003 Uwe Rathmann |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the Qwt License, Version 1.0 |
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*****************************************************************************/ |
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#ifndef QWT_POINT_MAPPER_H |
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#define QWT_POINT_MAPPER_H |
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#include "qwt_global.h" |
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#include "qwt_series_data.h" |
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#include <qimage.h> |
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class QwtScaleMap; |
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class QPolygonF; |
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class QPolygon; |
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/*! |
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\brief A helper class for translating a series of points |
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QwtPointMapper is a collection of methods and optimizations |
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for translating a series of points into paint device coordinates. |
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It is used by QwtPlotCurve but might also be useful for |
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similar plot items displaying a QwtSeriesData<QPointF>. |
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*/ |
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class QWT_EXPORT QwtPointMapper |
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{ |
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public: |
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/*! |
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\brief Flags affecting the transformation process |
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\sa setFlag(), setFlags() |
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*/ |
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enum TransformationFlag |
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{ |
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//! Round points to integer values |
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RoundPoints = 0x01, |
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/*! |
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Try to remove points, that are translated to the |
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same position. |
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*/ |
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WeedOutPoints = 0x02 |
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}; |
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/*! |
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\brief Flags affecting the transformation process |
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\sa setFlag(), setFlags() |
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*/ |
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typedef QFlags<TransformationFlag> TransformationFlags; |
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QwtPointMapper(); |
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~QwtPointMapper(); |
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void setFlags( TransformationFlags ); |
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TransformationFlags flags() const; |
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void setFlag( TransformationFlag, bool on = true ); |
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bool testFlag( TransformationFlag ) const; |
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void setBoundingRect( const QRectF & ); |
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QRectF boundingRect() const; |
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QPolygonF toPolygonF( const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QwtSeriesData<QPointF> *series, int from, int to ) const; |
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QPolygon toPolygon( const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QwtSeriesData<QPointF> *series, int from, int to ) const; |
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QPolygon toPoints( const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QwtSeriesData<QPointF> *series, int from, int to ) const; |
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QPolygonF toPointsF( const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QwtSeriesData<QPointF> *series, int from, int to ) const; |
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QImage toImage( const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QwtSeriesData<QPointF> *series, int from, int to, |
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const QPen &, bool antialiased, uint numThreads ) const; |
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private: |
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class PrivateData; |
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PrivateData *d_data; |
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}; |
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Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPointMapper::TransformationFlags ) |
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#endif
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