Qwt User's Guide  6.1.3
qwt_plot_textlabel.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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 1
12 
13 #include "qwt_global.h"
14 #include "qwt_plot_item.h"
15 #include "qwt_text.h"
16 
47 class QWT_EXPORT QwtPlotTextLabel: public QwtPlotItem
48 {
49 public:
51  virtual ~QwtPlotTextLabel();
52 
53  virtual int rtti() const;
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;
67 
68  void invalidateCache();
69 
70 private:
71  class PrivateData;
72  PrivateData *d_data;
73 };
74 
75 #endif
Base class for items on the plot canvas.
Definition: qwt_plot_item.h:64
A class representing a text.
Definition: qwt_text.h:51
A scale map.
Definition: qwt_scale_map.h:30
virtual void draw(QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const =0
Draw the item.
virtual int rtti() const
Definition: qwt_plot_item.cpp:120
A plot item, which displays a text label.
Definition: qwt_plot_textlabel.h:47