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71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
3 weeks ago
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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* QwtPolar Widget Library
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* Copyright (C) 2008 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_POLAR_MARKER_H
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#define QWT_POLAR_MARKER_H
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#include "qwt_polar_global.h"
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#include "qwt_polar_item.h"
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#include <qwt_point_polar.h>
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#include <qstring.h>
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class QRect;
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class QwtText;
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class QwtSymbol;
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/*!
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\brief A class for drawing markers
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A marker can be a a symbol, a label or a combination of them, which can
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be drawn around a center point inside a bounding rectangle.
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The setSymbol() member assigns a symbol to the marker.
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The symbol is drawn at the specified point.
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With setLabel(), a label can be assigned to the marker.
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The setLabelAlignment() member specifies where the label is
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drawn. All the Align*-constants in Qt::AlignmentFlags (see Qt documentation)
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are valid. The alignment refers to the center point of
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the marker, which means, for example, that the label would be painted
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left above the center point if the alignment was set to AlignLeft|AlignTop.
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*/
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class QWT_POLAR_EXPORT QwtPolarMarker: public QwtPolarItem
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{
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public:
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explicit QwtPolarMarker();
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virtual ~QwtPolarMarker();
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virtual int rtti() const;
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void setPosition( const QwtPointPolar & );
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QwtPointPolar position() const;
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void setSymbol( const QwtSymbol *s );
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const QwtSymbol *symbol() const;
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void setLabel( const QwtText& );
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QwtText label() const;
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void setLabelAlignment( Qt::Alignment );
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Qt::Alignment labelAlignment() const;
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virtual void draw( QPainter *painter,
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const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap,
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const QPointF &pole, double radius,
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const QRectF &canvasRect ) const;
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virtual QwtInterval boundingInterval( int scaleId ) 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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#endif
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