Qwt User's Guide
qwt_plot_spectrogram.h
00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
00002  * Qwt Widget Library
00003  * Copyright (C) 1997   Josef Wilgen
00004  * Copyright (C) 2002   Uwe Rathmann
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the Qwt License, Version 1.0
00008  *****************************************************************************/
00009 
00010 #ifndef QWT_PLOT_SPECTROGRAM_H
00011 #define QWT_PLOT_SPECTROGRAM_H
00012 
00013 #include "qwt_global.h"
00014 #include "qwt_raster_data.h"
00015 #include "qwt_plot_rasteritem.h"
00016 #include <qlist.h>
00017 
00018 class QwtColorMap;
00019 
00038 class QWT_EXPORT QwtPlotSpectrogram: public QwtPlotRasterItem
00039 {
00040 public:
00046     enum DisplayMode
00047     {
00049         ImageMode = 0x01,
00050 
00052         ContourMode = 0x02
00053     };
00054 
00056     typedef QFlags<DisplayMode> DisplayModes;
00057 
00058     explicit QwtPlotSpectrogram( const QString &title = QString::null );
00059     virtual ~QwtPlotSpectrogram();
00060 
00061     void setDisplayMode( DisplayMode, bool on = true );
00062     bool testDisplayMode( DisplayMode ) const;
00063 
00064     void setData( QwtRasterData *data );
00065     const QwtRasterData *data() const;
00066     QwtRasterData *data();
00067 
00068     void setColorMap( QwtColorMap * );
00069     const QwtColorMap *colorMap() const;
00070 
00071     virtual QwtInterval interval(Qt::Axis) const;
00072     virtual QRectF pixelHint( const QRectF & ) const;
00073 
00074     void setDefaultContourPen( const QColor &, 
00075         qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
00076     void setDefaultContourPen( const QPen & );
00077     QPen defaultContourPen() const;
00078 
00079     virtual QPen contourPen( double level ) const;
00080 
00081     void setConrecFlag( QwtRasterData::ConrecFlag, bool on );
00082     bool testConrecFlag( QwtRasterData::ConrecFlag ) const;
00083 
00084     void setContourLevels( const QList<double> & );
00085     QList<double> contourLevels() const;
00086 
00087     virtual int rtti() const;
00088 
00089     virtual void draw( QPainter *p,
00090         const QwtScaleMap &xMap, const QwtScaleMap &yMap,
00091         const QRectF &rect ) const;
00092 
00093 protected:
00094     virtual QImage renderImage(
00095         const QwtScaleMap &xMap, const QwtScaleMap &yMap,
00096         const QRectF &area, const QSize &imageSize ) const;
00097 
00098     virtual QSize contourRasterSize(
00099         const QRectF &, const QRect & ) const;
00100 
00101     virtual QwtRasterData::ContourLines renderContourLines(
00102         const QRectF &rect, const QSize &raster ) const;
00103 
00104     virtual void drawContourLines( QPainter *p,
00105         const QwtScaleMap &xMap, const QwtScaleMap &yMap,
00106         const QwtRasterData::ContourLines& lines ) const;
00107 
00108     void renderTile( const QwtScaleMap &xMap, const QwtScaleMap &yMap,
00109         const QRect &imageRect, QImage *image ) const;
00110 
00111 private:
00112     class PrivateData;
00113     PrivateData *d_data;
00114 };
00115 
00116 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotSpectrogram::DisplayModes )
00117 
00118 #endif
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