90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
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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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*
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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_COMPASS_ROSE_H
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#define QWT_COMPASS_ROSE_H 1
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#include "qwt_global.h"
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#include <qpalette.h>
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class QPainter;
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/*!
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\brief Abstract base class for a compass rose
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*/
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class QWT_EXPORT QwtCompassRose
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{
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public:
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//! Destructor
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virtual ~QwtCompassRose() {};
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//! Assign a palette
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virtual void setPalette( const QPalette &p )
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{
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d_palette = p;
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}
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//! \return Current palette
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const QPalette &palette() const
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{
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return d_palette;
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}
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/*!
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Draw the rose
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\param painter Painter
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\param center Center point
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\param radius Radius of the rose
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\param north Position
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\param colorGroup Color group
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*/
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virtual void draw( QPainter *painter,
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const QPointF ¢er, double radius, double north,
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QPalette::ColorGroup colorGroup = QPalette::Active ) const = 0;
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private:
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QPalette d_palette;
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};
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/*!
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\brief A simple rose for QwtCompass
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*/
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class QWT_EXPORT QwtSimpleCompassRose: public QwtCompassRose
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{
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public:
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QwtSimpleCompassRose( int numThorns = 8, int numThornLevels = -1 );
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virtual ~QwtSimpleCompassRose();
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void setWidth( double );
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double width() const;
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void setNumThorns( int );
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int numThorns() const;
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void setNumThornLevels( int );
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int numThornLevels() const;
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void setShrinkFactor( double factor );
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double shrinkFactor() const;
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virtual void draw( QPainter *, const QPointF ¢er, double radius,
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double north, QPalette::ColorGroup = QPalette::Active ) const;
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static void drawRose( QPainter *, const QPalette &,
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const QPointF ¢er, double radius, double north, double width,
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int numThorns, int numThornLevels, double shrinkFactor );
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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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