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qwt_plot_textlabel.h
/******************************************************************************
* 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_PLOT_TEXT_LABEL_H
#define QWT_PLOT_TEXT_LABEL_H
#include "qwt_global.h"
#include "qwt_plot_item.h"
class QwtText;
class QWT_EXPORT QwtPlotTextLabel : public QwtPlotItem
{
public:
QwtPlotTextLabel();
virtual ~QwtPlotTextLabel();
virtual int rtti() const QWT_OVERRIDE;
void setText( const QwtText& );
QwtText text() const;
void setMargin( int margin );
int margin() const;
virtual QRectF textRect( const QRectF&, const QSizeF& ) const;
protected:
virtual void draw( QPainter*,
const QwtScaleMap&, const QwtScaleMap&,
const QRectF&) const QWT_OVERRIDE;
void invalidateCache();
private:
class PrivateData;
PrivateData* m_data;
};
#endif
QwtPlotItem
Base class for items on the plot canvas.
Definition qwt_plot_item.h:67
QwtPlotItem::draw
virtual void draw(QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const =0
Draw the item.
QwtPlotItem::rtti
virtual int rtti() const
Definition qwt_plot_item.cpp:136
QwtPlotTextLabel
A plot item, which displays a text label.
Definition qwt_plot_textlabel.h:48
QwtScaleMap
A scale map.
Definition qwt_scale_map.h:27
QwtText
A class representing a text.
Definition qwt_text.h:52