Qwt User's Guide 6.0.2

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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
34 class QWT_EXPORT QwtPlotSpectrogram: public QwtPlotRasterItem
35 {
36 public:
42 enum DisplayMode
43 {
45 ImageMode = 0x01,
46
48 ContourMode = 0x02
49 };
50
52 typedef QFlags<DisplayMode> DisplayModes;
53
54 explicit QwtPlotSpectrogram( const QString &title = QString::null );
55 virtual ~QwtPlotSpectrogram();
56
57 void setRenderThreadCount( uint numThreads );
58 uint renderThreadCount() const;
59
60 void setDisplayMode( DisplayMode, bool on = true );
61 bool testDisplayMode( DisplayMode ) const;
62
63 void setData( QwtRasterData *data );
64 const QwtRasterData *data() const;
65 QwtRasterData *data();
66
67 void setColorMap( QwtColorMap * );
68 const QwtColorMap *colorMap() const;
69
70 virtual QwtInterval interval(Qt::Axis) const;
71 virtual QRectF pixelHint( const QRectF & ) const;
72
73 void setDefaultContourPen( const QPen & );
74 QPen defaultContourPen() const;
75
76 virtual QPen contourPen( double level ) const;
77
78 void setConrecFlag( QwtRasterData::ConrecFlag, bool on );
79 bool testConrecFlag( QwtRasterData::ConrecFlag ) const;
80
81 void setContourLevels( const QList<double> & );
82 QList<double> contourLevels() const;
83
84 virtual int rtti() const;
85
86 virtual void draw( QPainter *p,
87 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
88 const QRectF &rect ) const;
89
90 protected:
91 virtual QImage renderImage(
92 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
93 const QRectF &area, const QSize &imageSize ) const;
94
95 virtual QSize contourRasterSize(
96 const QRectF &, const QRect & ) const;
97
98 virtual QwtRasterData::ContourLines renderContourLines(
99 const QRectF &rect, const QSize &raster ) const;
100
101 virtual void drawContourLines( QPainter *p,
102 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
103 const QwtRasterData::ContourLines& lines ) const;
104
105 void renderTile( const QwtScaleMap &xMap, const QwtScaleMap &yMap,
106 const QRect &imageRect, QImage *image ) const;
107
108 private:
109 class PrivateData;
110 PrivateData *d_data;
111 };
112
113 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotSpectrogram::DisplayModes )
114
115 #endif