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69 lines
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69 lines
0 B
15 years ago
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/* -*- 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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14 years ago
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*
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15 years ago
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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 <qpoint.h>
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#include "qwt_global.h"
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#include "qwt_abstract_scale_draw.h"
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class QPen;
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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 QwtRoundScaleDraw::setAngleRange().
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The geometry of the scale can be specified with
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QwtRoundScaleDraw::moveCenter() and QwtRoundScaleDraw::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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QwtRoundScaleDraw(const QwtRoundScaleDraw &);
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virtual ~QwtRoundScaleDraw();
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QwtRoundScaleDraw &operator=(const QwtRoundScaleDraw &other);
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void setRadius(int radius);
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int radius() const;
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void moveCenter(int x, int y);
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void moveCenter(const QPoint &);
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QPoint center() const;
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void setAngleRange(double angle1, double angle2);
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virtual int extent(const QPen &, const QFont &) const;
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protected:
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virtual void drawTick(QPainter *p, double val, int len) const;
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virtual void drawBackbone(QPainter *p) const;
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virtual void drawLabel(QPainter *p, double val) 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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inline void QwtRoundScaleDraw::moveCenter(int x, int y)
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{
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moveCenter(QPoint(x, y));
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}
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#endif
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