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118 lines
3.5 KiB
118 lines
3.5 KiB
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- ***************************** |
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* Qwt Widget Library |
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* Copyright (C) 1997 Josef Wilgen |
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* Copyright (C) 2002 Uwe Rathmann |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the Qwt License, Version 1.0 |
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*****************************************************************************/ |
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#ifndef QWT_PLOT_SPECTROGRAM_H |
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#define QWT_PLOT_SPECTROGRAM_H |
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#include "qwt_global.h" |
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#include "qwt_raster_data.h" |
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#include "qwt_plot_rasteritem.h" |
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#include <qlist.h> |
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class QwtColorMap; |
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/*! |
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\brief A plot item, which displays a spectrogram |
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A spectrogram displays 3-dimensional data, where the 3rd dimension |
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( the intensity ) is displayed using colors. The colors are calculated |
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from the values using a color map. |
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On multi-core systems the performance of the image composition |
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can often be improved by dividing the area into tiles - each of them |
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rendered in a different thread ( see QwtPlotItem::setRenderThreadCount() ). |
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In ContourMode contour lines are painted for the contour levels. |
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\image html spectrogram3.png |
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\sa QwtRasterData, QwtColorMap, QwtPlotItem::setRenderThreadCount() |
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*/ |
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class QWT_EXPORT QwtPlotSpectrogram: public QwtPlotRasterItem |
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{ |
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public: |
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/*! |
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The display mode controls how the raster data will be represented. |
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\sa setDisplayMode(), testDisplayMode() |
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*/ |
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enum DisplayMode |
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{ |
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//! The values are mapped to colors using a color map. |
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ImageMode = 0x01, |
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//! The data is displayed using contour lines |
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ContourMode = 0x02 |
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}; |
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//! Display modes |
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typedef QFlags<DisplayMode> DisplayModes; |
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explicit QwtPlotSpectrogram( const QString &title = QString::null ); |
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virtual ~QwtPlotSpectrogram(); |
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void setDisplayMode( DisplayMode, bool on = true ); |
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bool testDisplayMode( DisplayMode ) const; |
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void setData( QwtRasterData *data ); |
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const QwtRasterData *data() const; |
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QwtRasterData *data(); |
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void setColorMap( QwtColorMap * ); |
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const QwtColorMap *colorMap() const; |
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virtual QwtInterval interval(Qt::Axis) const; |
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virtual QRectF pixelHint( const QRectF & ) const; |
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void setDefaultContourPen( const QColor &, |
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qreal width = 0.0, Qt::PenStyle = Qt::SolidLine ); |
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void setDefaultContourPen( const QPen & ); |
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QPen defaultContourPen() const; |
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virtual QPen contourPen( double level ) const; |
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void setConrecFlag( QwtRasterData::ConrecFlag, bool on ); |
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bool testConrecFlag( QwtRasterData::ConrecFlag ) const; |
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void setContourLevels( const QList<double> & ); |
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QList<double> contourLevels() const; |
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virtual int rtti() const; |
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virtual void draw( QPainter *p, |
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const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QRectF &rect ) const; |
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protected: |
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virtual QImage renderImage( |
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const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QRectF &area, const QSize &imageSize ) const; |
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virtual QSize contourRasterSize( |
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const QRectF &, const QRect & ) const; |
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virtual QwtRasterData::ContourLines renderContourLines( |
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const QRectF &rect, const QSize &raster ) const; |
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virtual void drawContourLines( QPainter *p, |
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const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QwtRasterData::ContourLines& lines ) const; |
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void renderTile( const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QRect &imageRect, QImage *image ) const; |
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private: |
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class PrivateData; |
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PrivateData *d_data; |
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}; |
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Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotSpectrogram::DisplayModes ) |
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#endif
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