Qwt User's Guide: qwt_plot_spectrogram.h Source File

Qwt User's Guide 6.3.0

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qwt_plot_spectrogram.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_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
17class QwtColorMap;
18template< typename T > class QList;
19
36 class QWT_EXPORT QwtPlotSpectrogram : public QwtPlotRasterItem
37{
38 public:
44 enum DisplayMode
45 {
47 ImageMode = 0x01,
48
50 ContourMode = 0x02
51 };
52
53 Q_DECLARE_FLAGS( DisplayModes, DisplayMode )
54
55 explicit QwtPlotSpectrogram( const QString& title = QString() );
56 virtual ~QwtPlotSpectrogram();
57
58 void setDisplayMode( DisplayMode, bool on = true );
59 bool testDisplayMode( DisplayMode ) const;
60
61 void setData( QwtRasterData* data );
62 const QwtRasterData* data() const;
63 QwtRasterData* data();
64
65 void setColorMap( QwtColorMap* );
66 const QwtColorMap* colorMap() const;
67
68 void setColorTableSize( int numColors );
69 int colorTableSize() const;
70
71 virtual QwtInterval interval( Qt::Axis ) const QWT_OVERRIDE;
72 virtual QRectF pixelHint( const QRectF& ) const QWT_OVERRIDE;
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 QWT_OVERRIDE;
88
89 virtual void draw( QPainter*,
90 const QwtScaleMap& xMap, const QwtScaleMap& yMap,
91 const QRectF& canvasRect ) const QWT_OVERRIDE;
92
93 protected:
94 virtual QImage renderImage(
95 const QwtScaleMap& xMap, const QwtScaleMap& yMap,
96 const QRectF& area, const QSize& imageSize ) const QWT_OVERRIDE;
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*,
105 const QwtScaleMap& xMap, const QwtScaleMap& yMap,
106 const QwtRasterData::ContourLines& ) const;
107
108 void renderTile( const QwtScaleMap& xMap, const QwtScaleMap& yMap,
109 const QRect& tile, QImage* ) const;
110
111 private:
112 class PrivateData;
113 PrivateData* m_data;
114};
115
116Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotSpectrogram::DisplayModes )
117
118#endif
QList
Definition qwt_abstract_legend.h:17
QwtColorMap
QwtColorMap is used to map values into colors.
Definition qwt_color_map.h:38
QwtInterval
A class representing an interval.
Definition qwt_interval.h:23
QwtPlotItem::rtti
virtual int rtti() const
Definition qwt_plot_item.cpp:136
QwtPlotRasterItem
A class, which displays raster data.
Definition qwt_plot_rasteritem.h:38
QwtPlotRasterItem::pixelHint
virtual QRectF pixelHint(const QRectF &) const
Pixel hint.
Definition qwt_plot_rasteritem.cpp:601
QwtPlotRasterItem::interval
virtual QwtInterval interval(Qt::Axis) const
Definition qwt_plot_rasteritem.cpp:790
QwtPlotSpectrogram
A plot item, which displays a spectrogram.
Definition qwt_plot_spectrogram.h:37
QwtPlotSpectrogram::DisplayModes
QFlags< DisplayMode > DisplayModes
Definition qwt_plot_spectrogram.h:53
QwtPlotSpectrogram::DisplayMode
DisplayMode
Definition qwt_plot_spectrogram.h:45
QwtRasterData
QwtRasterData defines an interface to any type of raster data.
Definition qwt_raster_data.h:43
QwtRasterData::ConrecFlag
ConrecFlag
Flags to modify the contour algorithm.
Definition qwt_raster_data.h:78
QwtScaleMap
A scale map.
Definition qwt_scale_map.h:27