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33fc476d89
* require qwt >=6.2 (and fallback to internal 6.3 if system's qwt doesn't suffice) * debian doesn't have qwt for Qt6 and won't have it for trixie
70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/******************************************************************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 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_ROUND_SCALE_DRAW_H
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#define QWT_ROUND_SCALE_DRAW_H
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#include "qwt_global.h"
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#include "qwt_abstract_scale_draw.h"
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#include <qpoint.h>
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/*!
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\brief A class for drawing round scales
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QwtRoundScaleDraw can be used to draw round scales.
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The circle segment can be adjusted by setAngleRange().
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The geometry of the scale can be specified with
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moveCenter() and setRadius().
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After a scale division has been specified as a QwtScaleDiv object
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using QwtAbstractScaleDraw::setScaleDiv(const QwtScaleDiv &s),
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the scale can be drawn with the QwtAbstractScaleDraw::draw() member.
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*/
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class QWT_EXPORT QwtRoundScaleDraw : public QwtAbstractScaleDraw
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{
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public:
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QwtRoundScaleDraw();
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virtual ~QwtRoundScaleDraw();
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void setRadius( double radius );
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double radius() const;
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void moveCenter( double x, double y );
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void moveCenter( const QPointF& );
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QPointF center() const;
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void setAngleRange( double angle1, double angle2 );
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virtual double extent( const QFont& ) const QWT_OVERRIDE;
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protected:
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virtual void drawTick( QPainter*,
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double value, double len ) const QWT_OVERRIDE;
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virtual void drawBackbone(
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QPainter* ) const QWT_OVERRIDE;
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virtual void drawLabel(
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QPainter*, double value ) const QWT_OVERRIDE;
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private:
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class PrivateData;
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PrivateData* m_data;
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};
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//! Move the center of the scale draw, leaving the radius unchanged
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inline void QwtRoundScaleDraw::moveCenter( double x, double y )
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{
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moveCenter( QPointF( x, y ) );
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}
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#endif
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