Qwt User's Guide  6.2.0
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:
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
Base class for items on the plot canvas.
Definition: qwt_plot_item.h:67
virtual void draw(QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const =0
Draw the item.
virtual int rtti() const
A plot item, which displays a text label.
A scale map.
Definition: qwt_scale_map.h:27
A class representing a text.
Definition: qwt_text.h:52