Qwt User's Guide 6.1.3

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- Classes

qwt_plot_spectrogram.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_SPECTROGRAM_H
11 #define QWT_PLOT_SPECTROGRAM_H
12
13 #include "qwt_global.h"
14 #include "qwt_raster_data.h"
15 #include "qwt_plot_rasteritem.h"
16 #include <qlist.h>
17
18 class QwtColorMap;
19
38 class QWT_EXPORT QwtPlotSpectrogram: public QwtPlotRasterItem
39 {
40 public:
46 enum DisplayMode
47 {
49 ImageMode = 0x01,
50
52 ContourMode = 0x02
53 };
54
56 typedef QFlags<DisplayMode> DisplayModes;
57
58 explicit QwtPlotSpectrogram( const QString &title = QString::null );
59 virtual ~QwtPlotSpectrogram();
60
61 void setDisplayMode( DisplayMode, bool on = true );
62 bool testDisplayMode( DisplayMode ) const;
63
64 void setData( QwtRasterData *data );
65 const QwtRasterData *data() const;
66 QwtRasterData *data();
67
68 void setColorMap( QwtColorMap * );
69 const QwtColorMap *colorMap() const;
70
71 virtual QwtInterval interval(Qt::Axis) const;
72 virtual QRectF pixelHint( const QRectF & ) const;
73
74 void setDefaultContourPen( const QColor &,
75 qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
76 void setDefaultContourPen( const QPen & );
77 QPen defaultContourPen() const;
78
79 virtual QPen contourPen( double level ) const;
80
81 void setConrecFlag( QwtRasterData::ConrecFlag, bool on );
82 bool testConrecFlag( QwtRasterData::ConrecFlag ) const;
83
84 void setContourLevels( const QList<double> & );
85 QList<double> contourLevels() const;
86
87 virtual int rtti() const;
88
89 virtual void draw( QPainter *p,
90 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
91 const QRectF &rect ) const;
92
93 protected:
94 virtual QImage renderImage(
95 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
96 const QRectF &area, const QSize &imageSize ) const;
97
98 virtual QSize contourRasterSize(
99 const QRectF &, const QRect & ) const;
100
101 virtual QwtRasterData::ContourLines renderContourLines(
102 const QRectF &rect, const QSize &raster ) const;
103
104 virtual void drawContourLines( QPainter *p,
105 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
106 const QwtRasterData::ContourLines& lines ) const;
107
108 void renderTile( const QwtScaleMap &xMap, const QwtScaleMap &yMap,
109 const QRect &imageRect, QImage *image ) const;
110
111 private:
112 class PrivateData;
113 PrivateData *d_data;
114 };
115
116 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotSpectrogram::DisplayModes )
117
118 #endif
QwtPlotRasterItem::interval
virtual QwtInterval interval(Qt::Axis) const
Definition: qwt_plot_rasteritem.cpp:774
QwtPlotSpectrogram::DisplayMode
DisplayMode
Definition: qwt_plot_spectrogram.h:46
QwtScaleMap
A scale map.
Definition: qwt_scale_map.h:30
QwtRasterData
QwtRasterData defines an interface to any type of raster data.
Definition: qwt_raster_data.h:32
QwtRasterData::ContourLines
QMap< double, QPolygonF > ContourLines
Contour lines.
Definition: qwt_raster_data.h:36
QwtPlotItem::rtti
virtual int rtti() const
Definition: qwt_plot_item.cpp:120
QwtPlotSpectrogram::DisplayModes
QFlags< DisplayMode > DisplayModes
Display modes.
Definition: qwt_plot_spectrogram.h:56
QwtPlotRasterItem::pixelHint
virtual QRectF pixelHint(const QRectF &) const
Pixel hint.
Definition: qwt_plot_rasteritem.cpp:597
QwtColorMap
QwtColorMap is used to map values into colors.
Definition: qwt_color_map.h:33
QwtPlotRasterItem::renderImage
virtual QImage renderImage(const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &area, const QSize &imageSize) const =0
Render an image.
QwtPlotRasterItem
A class, which displays raster data.
Definition: qwt_plot_rasteritem.h:37
QwtInterval
A class representing an interval.
Definition: qwt_interval.h:26
QwtPlotSpectrogram
A plot item, which displays a spectrogram.
Definition: qwt_plot_spectrogram.h:38
QwtPlotRasterItem::draw
virtual void draw(QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &rect) const
Draw the raster data.
Definition: qwt_plot_rasteritem.cpp:610
QwtRasterData::ConrecFlag
ConrecFlag
Flags to modify the contour algorithm.
Definition: qwt_raster_data.h:39