[89] | 1 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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| 2 | * Qwt Widget Library
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| 3 | * Copyright (C) 1997 Josef Wilgen
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| 4 | * Copyright (C) 2002 Uwe Rathmann
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the Qwt License, Version 1.0
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| 8 | *****************************************************************************/
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| 9 |
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| 10 | #ifndef QWT_PLOT_SPECTROGRAM_H
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| 11 | #define QWT_PLOT_SPECTROGRAM_H
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| 12 |
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| 13 | #include <qglobal.h>
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| 14 |
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| 15 | #include "qwt_valuelist.h"
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| 16 | #include "qwt_raster_data.h"
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| 17 | #include "qwt_plot_rasteritem.h"
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| 18 |
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| 19 | class QwtColorMap;
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| 20 |
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| 21 | /*!
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| 22 | \brief A plot item, which displays a spectrogram
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| 23 |
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| 24 | A spectrogram displays threedimenional data, where the 3rd dimension
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| 25 | ( the intensity ) is displayed using colors. The colors are calculated
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| 26 | from the values using a color map.
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| 27 |
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| 28 | In ContourMode contour lines are painted for the contour levels.
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| 29 |
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| 30 | \image html spectrogram3.png
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| 31 |
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| 32 | \sa QwtRasterData, QwtColorMap
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| 33 | */
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| 34 |
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| 35 | class QWT_EXPORT QwtPlotSpectrogram: public QwtPlotRasterItem
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| 36 | {
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| 37 | public:
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| 38 | /*!
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| 39 | The display mode controls how the raster data will be represented.
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| 40 | - ImageMode\n
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| 41 | The values are mapped to colors using a color map.
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| 42 | - ContourMode\n
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| 43 | The data is displayed using contour lines
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| 44 |
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| 45 | When both modes are enabled the contour lines are painted on
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| 46 | top of the spectrogram. The default setting enables ImageMode.
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| 47 |
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| 48 | \sa setDisplayMode(), testDisplayMode()
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| 49 | */
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| 50 |
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| 51 | enum DisplayMode
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| 52 | {
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| 53 | ImageMode = 1,
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| 54 | ContourMode = 2
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| 55 | };
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| 56 |
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| 57 | explicit QwtPlotSpectrogram(const QString &title = QString::null);
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| 58 | virtual ~QwtPlotSpectrogram();
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| 59 |
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| 60 | void setDisplayMode(DisplayMode, bool on = true);
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| 61 | bool testDisplayMode(DisplayMode) const;
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| 62 |
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| 63 | void setData(const QwtRasterData &data);
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| 64 | const QwtRasterData &data() const;
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| 65 |
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| 66 | void setColorMap(const QwtColorMap &);
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| 67 | const QwtColorMap &colorMap() const;
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| 68 |
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| 69 | virtual QwtDoubleRect boundingRect() const;
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| 70 | virtual QSize rasterHint(const QwtDoubleRect &) const;
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| 71 |
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| 72 | void setDefaultContourPen(const QPen &);
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| 73 | QPen defaultContourPen() const;
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| 74 |
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| 75 | virtual QPen contourPen(double level) const;
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| 76 |
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| 77 | void setConrecAttribute(QwtRasterData::ConrecAttribute, bool on);
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| 78 | bool testConrecAttribute(QwtRasterData::ConrecAttribute) const;
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| 79 |
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| 80 | void setContourLevels(const QwtValueList &);
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| 81 | QwtValueList contourLevels() const;
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| 82 |
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| 83 | virtual int rtti() const;
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| 84 |
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| 85 | virtual void draw(QPainter *p,
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| 86 | const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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| 87 | const QRect &rect) const;
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| 88 |
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| 89 | protected:
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| 90 | virtual QImage renderImage(
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| 91 | const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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| 92 | const QwtDoubleRect &rect) const;
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| 93 |
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| 94 | virtual QSize contourRasterSize(
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| 95 | const QwtDoubleRect &, const QRect &) const;
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| 96 |
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| 97 | virtual QwtRasterData::ContourLines renderContourLines(
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| 98 | const QwtDoubleRect &rect, const QSize &raster) const;
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| 99 |
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| 100 | virtual void drawContourLines(QPainter *p,
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| 101 | const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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| 102 | const QwtRasterData::ContourLines& lines) const;
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| 103 |
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| 104 | private:
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| 105 | class PrivateData;
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| 106 | PrivateData *d_data;
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| 107 | };
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| 108 |
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| 109 | #endif
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