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66 lines
1.9 KiB
66 lines
1.9 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) 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; |
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protected: |
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virtual void drawTick( QPainter *, double val, double len ) const; |
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virtual void drawBackbone( QPainter * ) const; |
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virtual void drawLabel( QPainter *, double val ) const; |
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private: |
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QwtRoundScaleDraw( const QwtRoundScaleDraw & ); |
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QwtRoundScaleDraw &operator=( const QwtRoundScaleDraw &other ); |
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class PrivateData; |
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PrivateData *d_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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