Qwt User's Guide 6.3.0

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qwt_plot_textlabel.h
1/******************************************************************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10#ifndef QWT_PLOT_TEXT_LABEL_H
11#define QWT_PLOT_TEXT_LABEL_H
12
13#include "qwt_global.h"
14#include "qwt_plot_item.h"
15
16 class QwtText;
17
47 class QWT_EXPORT QwtPlotTextLabel : public QwtPlotItem
48{
49 public:
50 QwtPlotTextLabel();
51 virtual ~QwtPlotTextLabel();
52
53 virtual int rtti() const QWT_OVERRIDE;
54
55 void setText( const QwtText& );
56 QwtText text() const;
57
58 void setMargin( int margin );
59 int margin() const;
60
61 virtual QRectF textRect( const QRectF&, const QSizeF& ) const;
62
63 protected:
64 virtual void draw( QPainter*,
65 const QwtScaleMap&, const QwtScaleMap&,
66 const QRectF&) const QWT_OVERRIDE;
67
68 void invalidateCache();
69
70 private:
71 class PrivateData;
72 PrivateData* m_data;
73};
74
75#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