qwt_abstract_legend.h
/* -*- 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_ABSTRACT_LEGEND_H
#define QWT_ABSTRACT_LEGEND_H
#include "qwt_global.h"
#include "qwt_legend_data.h"
#include <qframe.h>
#include <qlist.h>
class QVariant;
class QWT_EXPORT QwtAbstractLegend : public QFrame
{
Q_OBJECT
public:
explicit QwtAbstractLegend( QWidget *parent = NULL );
virtual ~QwtAbstractLegend();
virtual void renderLegend( QPainter *painter,
const QRectF &rect, bool fillBackground ) const = 0;
virtual bool isEmpty() const = 0;
virtual int scrollExtent( Qt::Orientation ) const;
public Q_SLOTS:
virtual void updateLegend( const QVariant &itemInfo,
const QList<QwtLegendData> &data ) = 0;
};
#endif
QwtAbstractLegend::renderLegend
virtual void renderLegend(QPainter *painter, const QRectF &rect, bool fillBackground) const =0
QwtAbstractLegend::isEmpty
virtual bool isEmpty() const =0
QwtAbstractLegend
Abstract base class for legend widgets.
Definition: qwt_abstract_legend.h:35
QwtAbstractLegend::updateLegend
virtual void updateLegend(const QVariant &itemInfo, const QList< QwtLegendData > &data)=0
Update the entries for a plot item.