Qwt User's Guide
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00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- ***************************** 00002 * Qwt Widget Library 00003 * Copyright (C) 1997 Josef Wilgen 00004 * Copyright (C) 2002 Uwe Rathmann 00005 * 00006 * This library is free software; you can redistribute it and/or 00007 * modify it under the terms of the Qwt License, Version 1.0 00008 *****************************************************************************/ 00009 00010 #ifndef QWT_LEGEND_ITEM_MANAGER_H 00011 #define QWT_LEGEND_ITEM_MANAGER_H 00012 00013 #include "qwt_global.h" 00014 00015 class QwtLegend; 00016 class QWidget; 00017 class QRectF; 00018 class QPainter; 00019 00024 class QWT_EXPORT QwtLegendItemManager 00025 { 00026 public: 00028 QwtLegendItemManager() 00029 { 00030 } 00031 00033 virtual ~QwtLegendItemManager() 00034 { 00035 } 00036 00042 virtual void updateLegend( QwtLegend *legend ) const = 0; 00043 00050 virtual QWidget *legendItem() const = 0; 00051 00060 virtual void drawLegendIdentifier( QPainter *, const QRectF & ) const 00061 { 00062 } 00063 }; 00064 00065 #endif 00066