You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
3 weeks ago
|
/* -*- 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;
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief Abstract base class for legend widgets
|
||
|
|
|
||
|
|
Legends, that need to be under control of the QwtPlot layout system
|
||
|
|
need to be derived from QwtAbstractLegend.
|
||
|
|
|
||
|
|
\note Other type of legends can be implemented by connecting to
|
||
|
|
the QwtPlot::legendDataChanged() signal. But as these legends
|
||
|
|
are unknown to the plot layout system the layout code
|
||
|
|
( on screen and for QwtPlotRenderer ) need to be organized
|
||
|
|
in application code.
|
||
|
|
|
||
|
|
\sa QwtLegend
|
||
|
|
*/
|
||
|
|
class QWT_EXPORT QwtAbstractLegend : public QFrame
|
||
|
|
{
|
||
|
|
Q_OBJECT
|
||
|
|
|
||
|
|
public:
|
||
|
|
explicit QwtAbstractLegend( QWidget *parent = NULL );
|
||
|
|
virtual ~QwtAbstractLegend();
|
||
|
|
|
||
|
|
/*!
|
||
|
|
Render the legend into a given rectangle.
|
||
|
|
|
||
|
|
\param painter Painter
|
||
|
|
\param rect Bounding rectangle
|
||
|
|
\param fillBackground When true, fill rect with the widget background
|
||
|
|
|
||
|
|
\sa renderLegend() is used by QwtPlotRenderer
|
||
|
|
*/
|
||
|
|
virtual void renderLegend( QPainter *painter,
|
||
|
|
const QRectF &rect, bool fillBackground ) const = 0;
|
||
|
|
|
||
|
|
//! \return True, when no plot item is inserted
|
||
|
|
virtual bool isEmpty() const = 0;
|
||
|
|
|
||
|
|
virtual int scrollExtent( Qt::Orientation ) const;
|
||
|
|
|
||
|
|
public Q_SLOTS:
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief Update the entries for a plot item
|
||
|
|
|
||
|
|
\param itemInfo Info about an item
|
||
|
|
\param data List of legend entry attributes for the item
|
||
|
|
*/
|
||
|
|
virtual void updateLegend( const QVariant &itemInfo,
|
||
|
|
const QList<QwtLegendData> &data ) = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|