Qwt User's Guide  6.0.2
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:
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