88 lines
2.1 KiB
C
88 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_LEGEND_DATA_H
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#define QWT_LEGEND_DATA_H
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#include "qwt_global.h"
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#include "qwt_text.h"
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#include "qwt_graphic.h"
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#include <qvariant.h>
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#include <qpixmap.h>
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#include <qmap.h>
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/*!
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\brief Attributes of an entry on a legend
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QwtLegendData is an abstract container ( like QAbstractModel )
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to exchange attributes, that are only known between to
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the plot item and the legend.
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By overloading QwtPlotItem::legendData() any other set of attributes
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could be used, that can be handled by a modified ( or completely
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different ) implementation of a legend.
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\sa QwtLegend, QwtPlotLegendItem
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\note The stockchart example implements a legend as a tree
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with checkable items
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*/
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class QWT_EXPORT QwtLegendData
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{
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public:
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//! Mode defining how a legend entry interacts
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enum Mode
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{
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//! The legend item is not interactive, like a label
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ReadOnly,
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//! The legend item is clickable, like a push button
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Clickable,
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//! The legend item is checkable, like a checkable button
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Checkable
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};
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//! Identifier how to interprete a QVariant
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enum Role
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{
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// The value is a Mode
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ModeRole,
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// The value is a title
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TitleRole,
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// The value is an icon
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IconRole,
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// Values < UserRole are reserved for internal use
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UserRole = 32
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};
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QwtLegendData();
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~QwtLegendData();
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void setValues( const QMap<int, QVariant> & );
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const QMap<int, QVariant> &values() const;
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void setValue( int role, const QVariant & );
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QVariant value( int role ) const;
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bool hasRole( int role ) const;
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bool isValid() const;
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QwtGraphic icon() const;
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QwtText title() const;
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Mode mode() const;
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private:
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QMap<int, QVariant> d_map;
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};
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#endif
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