source: ntrip/branches/BNC_2.12/qwt/qwt_plot_intervalcurve.h@ 8142

Last change on this file since 8142 was 4271, checked in by mervart, 10 years ago
File size: 3.7 KB
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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_INTERVAL_CURVE_H
11#define QWT_PLOT_INTERVAL_CURVE_H
12
13#include "qwt_global.h"
14#include "qwt_plot_seriesitem.h"
15#include "qwt_series_data.h"
16
17class QwtIntervalSymbol;
18
19/*!
20 \brief QwtPlotIntervalCurve represents a series of samples, where each value
21 is associated with an interval ( \f$[y1,y2] = f(x)\f$ ).
22
23 The representation depends on the style() and an optional symbol()
24 that is displayed for each interval. QwtPlotIntervalCurve might be used
25 to disply error bars or the area between 2 curves.
26*/
27
28class QWT_EXPORT QwtPlotIntervalCurve: public QwtPlotSeriesItem<QwtIntervalSample>
29{
30public:
31 /*!
32 \brief Curve styles.
33 The default setting is QwtPlotIntervalCurve::Tube.
34
35 \sa setStyle(), style()
36 */
37
38 enum CurveStyle
39 {
40 /*!
41 Don't draw a curve. Note: This doesn't affect the symbols.
42 */
43 NoCurve,
44
45 /*!
46 Build 2 curves from the upper and lower limits of the intervals
47 and draw them with the pen(). The area between the curves is
48 filled with the brush().
49 */
50 Tube,
51
52 /*!
53 Styles >= QwtPlotIntervalCurve::UserCurve are reserved for derived
54 classes that overload drawSeries() with
55 additional application specific curve types.
56 */
57 UserCurve = 100
58 };
59
60 /*!
61 Attributes to modify the drawing algorithm.
62 \sa setPaintAttribute(), testPaintAttribute()
63 */
64 enum PaintAttribute
65 {
66 /*!
67 Clip polygons before painting them. In situations, where points
68 are far outside the visible area (f.e when zooming deep) this
69 might be a substantial improvement for the painting performance.
70 */
71 ClipPolygons = 0x01,
72
73 //! Check if a symbol is on the plot canvas before painting it.
74 ClipSymbol = 0x02
75 };
76
77 //! Paint attributes
78 typedef QFlags<PaintAttribute> PaintAttributes;
79
80 explicit QwtPlotIntervalCurve( const QString &title = QString::null );
81 explicit QwtPlotIntervalCurve( const QwtText &title );
82
83 virtual ~QwtPlotIntervalCurve();
84
85 virtual int rtti() const;
86
87 void setPaintAttribute( PaintAttribute, bool on = true );
88 bool testPaintAttribute( PaintAttribute ) const;
89
90 void setSamples( const QVector<QwtIntervalSample> & );
91
92 void setPen( const QPen & );
93 const QPen &pen() const;
94
95 void setBrush( const QBrush & );
96 const QBrush &brush() const;
97
98 void setStyle( CurveStyle style );
99 CurveStyle style() const;
100
101 void setSymbol( const QwtIntervalSymbol * );
102 const QwtIntervalSymbol *symbol() const;
103
104 virtual void drawSeries( QPainter *p,
105 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
106 const QRectF &canvasRect, int from, int to ) const;
107
108 virtual QRectF boundingRect() const;
109 virtual void drawLegendIdentifier( QPainter *, const QRectF & ) const;
110
111protected:
112
113 void init();
114
115 virtual void drawTube( QPainter *,
116 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
117 const QRectF &canvasRect, int from, int to ) const;
118
119 virtual void drawSymbols( QPainter *, const QwtIntervalSymbol &,
120 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
121 const QRectF &canvasRect, int from, int to ) const;
122
123private:
124 class PrivateData;
125 PrivateData *d_data;
126};
127
128Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotIntervalCurve::PaintAttributes )
129
130#endif
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