source: ntrip/trunk/GnssCenter/qwt/qwt_plot_marker.h@ 7112

Last change on this file since 7112 was 4839, checked in by mervart, 12 years ago
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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_MARKER_H
11#define QWT_PLOT_MARKER_H
12
13#include <qpen.h>
14#include <qfont.h>
15#include <qstring.h>
16#include <qbrush.h>
17#include "qwt_global.h"
18#include "qwt_plot_item.h"
19
20class QRectF;
21class QwtText;
22class QwtSymbol;
23
24/*!
25 \brief A class for drawing markers
26
27 A marker can be a horizontal line, a vertical line,
28 a symbol, a label or any combination of them, which can
29 be drawn around a center point inside a bounding rectangle.
30
31 The QwtPlotMarker::setSymbol() member assigns a symbol to the marker.
32 The symbol is drawn at the specified point.
33
34 With setLabel(), a label can be assigned to the marker.
35 The setLabelAlignment() member specifies where the label is
36 drawn. All the Align*-constants in Qt::AlignmentFlags (see Qt documentation)
37 are valid. The interpretation of the alignment depends on the marker's
38 line style. The alignment refers to the center point of
39 the marker, which means, for example, that the label would be printed
40 left above the center point if the alignment was set to
41 Qt::AlignLeft | Qt::AlignTop.
42*/
43
44class QWT_EXPORT QwtPlotMarker: public QwtPlotItem
45{
46public:
47
48 /*!
49 Line styles.
50 \sa setLineStyle(), lineStyle()
51 */
52 enum LineStyle
53 {
54 //! No line
55 NoLine,
56
57 //! A horizontal line
58 HLine,
59
60 //! A vertical line
61 VLine,
62
63 //! A crosshair
64 Cross
65 };
66
67 explicit QwtPlotMarker();
68 virtual ~QwtPlotMarker();
69
70 virtual int rtti() const;
71
72 double xValue() const;
73 double yValue() const;
74 QPointF value() const;
75
76 void setXValue( double );
77 void setYValue( double );
78 void setValue( double, double );
79 void setValue( const QPointF & );
80
81 void setLineStyle( LineStyle st );
82 LineStyle lineStyle() const;
83
84 void setLinePen( const QPen &p );
85 const QPen &linePen() const;
86
87 void setSymbol( const QwtSymbol * );
88 const QwtSymbol *symbol() const;
89
90 void setLabel( const QwtText& );
91 QwtText label() const;
92
93 void setLabelAlignment( Qt::Alignment );
94 Qt::Alignment labelAlignment() const;
95
96 void setLabelOrientation( Qt::Orientation );
97 Qt::Orientation labelOrientation() const;
98
99 void setSpacing( int );
100 int spacing() const;
101
102 virtual void draw( QPainter *p,
103 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
104 const QRectF & ) const;
105
106 virtual QRectF boundingRect() const;
107
108 virtual void updateLegend( QwtLegend * ) const;
109 virtual void drawLegendIdentifier( QPainter *, const QRectF & ) const;
110
111protected:
112 virtual void drawLines( QPainter *,
113 const QRectF &, const QPointF & ) const;
114
115 virtual void drawLabel( QPainter *,
116 const QRectF &, const QPointF & ) const;
117
118private:
119
120 class PrivateData;
121 PrivateData *d_data;
122};
123
124#endif
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