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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