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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
#ifndef QWT_COMPASS_ROSE_H
#define QWT_COMPASS_ROSE_H 1
#include "qwt_global.h"
#include <qpalette.h>
class QPainter;
/*!
\brief Abstract base class for a compass rose
*/
class QWT_EXPORT QwtCompassRose
{
public:
//! Destructor
virtual ~QwtCompassRose() {};
//! Assign a palette
virtual void setPalette( const QPalette &p )
{
d_palette = p;
}
//! \return Current palette
const QPalette &palette() const
{
return d_palette;
}
/*!
Draw the rose
\param painter Painter
\param center Center point
\param radius Radius of the rose
\param north Position
\param colorGroup Color group
*/
virtual void draw( QPainter *painter,
const QPointF ¢er, double radius, double north,
QPalette::ColorGroup colorGroup = QPalette::Active ) const = 0;
private:
QPalette d_palette;
};
/*!
\brief A simple rose for QwtCompass
*/
class QWT_EXPORT QwtSimpleCompassRose: public QwtCompassRose
{
public:
QwtSimpleCompassRose( int numThorns = 8, int numThornLevels = -1 );
virtual ~QwtSimpleCompassRose();
void setWidth( double w );
double width() const;
void setNumThorns( int count );
int numThorns() const;
void setNumThornLevels( int count );
int numThornLevels() const;
void setShrinkFactor( double factor );
double shrinkFactor() const;
virtual void draw( QPainter *, const QPointF ¢er, double radius,
double north, QPalette::ColorGroup = QPalette::Active ) const;
static void drawRose( QPainter *, const QPalette &,
const QPointF ¢er, double radius, double origin, double width,
int numThorns, int numThornLevels, double shrinkFactor );
private:
class PrivateData;
PrivateData *d_data;
};
#endif
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