QwtAbstractLegend Class Reference

Abstract base class for legend widgets. More...

#include <qwt_abstract_legend.h>

Inheritance diagram for QwtAbstractLegend:

Public Slots
virtual void	updateLegend (const QVariant &itemInfo, const QList< QwtLegendData > &data)=0
	Update the entries for a plot item.

Public Member Functions
	QwtAbstractLegend (QWidget *parent=nullptr)
	Constructor for QwtAbstractLegend.
virtual	~QwtAbstractLegend ()
	Destructor for QwtAbstractLegend .
virtual void	renderLegend (QPainter *painter, const QRectF &rect, bool fillBackground) const =0
	Render the legend into a given rectangle.
virtual bool	isEmpty () const =0
virtual int	scrollExtent (Qt::Orientation) const
	Return the extent needed for scroll elements.

Detailed Description

Abstract base class for legend widgets.

Constructor & Destructor Documentation

QwtAbstractLegend()

QwtAbstractLegend::QwtAbstractLegend ( QWidget *  parent = nullptr )

explicit

Constructor for QwtAbstractLegend.

~QwtAbstractLegend()

QwtAbstractLegend::~QwtAbstractLegend ( )

virtual

Destructor for QwtAbstractLegend .

Member Function Documentation

isEmpty()

virtual bool QwtAbstractLegend::isEmpty ( ) const

pure virtual

Implemented in QwtLegend.

renderLegend()

virtual void QwtAbstractLegend::renderLegend ( QPainter *  painter, const QRectF &  rect, bool  fillBackground  ) const

pure virtual

Render the legend into a given rectangle.

Implemented in QwtLegend.

scrollExtent()

int QwtAbstractLegend::scrollExtent ( Qt::Orientation  orientation ) const

virtual

Return the extent needed for scroll elements.

Reimplemented in QwtLegend.

updateLegend

virtual void QwtAbstractLegend::updateLegend ( const QVariant &  itemInfo, const QList< QwtLegendData > &  data  )

pure virtualslot

Update the entries for a plot item.

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The documentation for this class was generated from the following files:

• /home/runner/work/QWT/QWT/src/plot/qwt_abstract_legend.h
• /home/runner/work/QWT/QWT/src/plot/qwt_abstract_legend.cpp