Qwt User's Guide 6.3.0

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qwt_plot_marker.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_MARKER_H
11#define QWT_PLOT_MARKER_H
12
13#include "qwt_global.h"
14#include "qwt_plot_item.h"
15
16 class QString;
17 class QRectF;
18 class QwtText;
19 class QwtSymbol;
20
45 class QWT_EXPORT QwtPlotMarker : public QwtPlotItem
46{
47 public:
48
53 enum LineStyle
54 {
56 NoLine,
57
59 HLine,
60
62 VLine,
63
65 Cross
66 };
67
68 explicit QwtPlotMarker();
69 explicit QwtPlotMarker( const QString& title );
70 explicit QwtPlotMarker( const QwtText& title );
71
72 virtual ~QwtPlotMarker();
73
74 virtual int rtti() const QWT_OVERRIDE;
75
76 double xValue() const;
77 double yValue() const;
78 QPointF value() const;
79
80 void setXValue( double );
81 void setYValue( double );
82 void setValue( double, double );
83 void setValue( const QPointF& );
84
85 void setLineStyle( LineStyle );
86 LineStyle lineStyle() const;
87
88 void setLinePen( const QColor&, qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
89 void setLinePen( const QPen& );
90 const QPen& linePen() const;
91
92 void setSymbol( const QwtSymbol* );
93 const QwtSymbol* symbol() const;
94
95 void setLabel( const QwtText& );
96 QwtText label() const;
97
98 void setLabelAlignment( Qt::Alignment );
99 Qt::Alignment labelAlignment() const;
100
101 void setLabelOrientation( Qt::Orientation );
102 Qt::Orientation labelOrientation() const;
103
104 void setSpacing( int );
105 int spacing() const;
106
107 virtual void draw( QPainter*,
108 const QwtScaleMap& xMap, const QwtScaleMap& yMap,
109 const QRectF& ) const QWT_OVERRIDE;
110
111 virtual QRectF boundingRect() const QWT_OVERRIDE;
112
113 virtual QwtGraphic legendIcon(
114 int index, const QSizeF& ) const QWT_OVERRIDE;
115
116 protected:
117 virtual void drawLines( QPainter*,
118 const QRectF&, const QPointF& ) const;
119
120 virtual void drawSymbol( QPainter*,
121 const QRectF&, const QPointF& ) const;
122
123 virtual void drawLabel( QPainter*,
124 const QRectF&, const QPointF& ) const;
125
126 private:
127
128 class PrivateData;
129 PrivateData* m_data;
130};
131
132#endif
QwtGraphic
A paint device for scalable graphics.
Definition qwt_graphic.h:76
QwtPlotItem
Base class for items on the plot canvas.
Definition qwt_plot_item.h:67
QwtPlotItem::rtti
virtual int rtti() const
Definition qwt_plot_item.cpp:136
QwtPlotMarker
A class for drawing markers.
Definition qwt_plot_marker.h:46
QwtPlotMarker::LineStyle
LineStyle
Definition qwt_plot_marker.h:54
QwtPlotMarker::HLine
@ HLine
A horizontal line.
Definition qwt_plot_marker.h:59
QwtPlotMarker::NoLine
@ NoLine
No line.
Definition qwt_plot_marker.h:56
QwtPlotMarker::VLine
@ VLine
A vertical line.
Definition qwt_plot_marker.h:62
QwtScaleMap
A scale map.
Definition qwt_scale_map.h:27
QwtSymbol
A class for drawing symbols.
Definition qwt_symbol.h:32
QwtText
A class representing a text.
Definition qwt_text.h:52