Qwt User's Guide  6.1.3
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:
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
virtual QwtInterval interval(Qt::Axis) const
Definition: qwt_plot_rasteritem.cpp:774
DisplayMode
Definition: qwt_plot_spectrogram.h:46
A scale map.
Definition: qwt_scale_map.h:30
QwtRasterData defines an interface to any type of raster data.
Definition: qwt_raster_data.h:32
QMap< double, QPolygonF > ContourLines
Contour lines.
Definition: qwt_raster_data.h:36
virtual int rtti() const
Definition: qwt_plot_item.cpp:120
QFlags< DisplayMode > DisplayModes
Display modes.
Definition: qwt_plot_spectrogram.h:56
virtual QRectF pixelHint(const QRectF &) const
Pixel hint.
Definition: qwt_plot_rasteritem.cpp:597
QwtColorMap is used to map values into colors.
Definition: qwt_color_map.h:33
virtual QImage renderImage(const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &area, const QSize &imageSize) const =0
Render an image.
A class, which displays raster data.
Definition: qwt_plot_rasteritem.h:37
A class representing an interval.
Definition: qwt_interval.h:26
A plot item, which displays a spectrogram.
Definition: qwt_plot_spectrogram.h:38
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
ConrecFlag
Flags to modify the contour algorithm.
Definition: qwt_raster_data.h:39