plot_waterfall.h

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/* -*- c++ -*- */
/*
 * Copyright 2008-2012 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 */
 
#ifndef PLOT_WATERFALL_H
#define PLOT_WATERFALL_H
 
#include <gnuradio/qtgui/waterfallGlobalData.h>
#include <qglobal.h>
#include <qwt_plot_rasteritem.h>
 
#if QWT_VERSION >= 0x060000
#include <qwt_compat.h>
#include <qwt_point_3d.h> // doesn't seem necessary, but is...
#endif
 
class QwtColorMap;
 
/*!
 * \brief A plot item, which displays a waterfall spectrogram
 * \ingroup qtgui_blk
 *
 * \details
 * A waterfall displays three-dimensional data, where the 3rd dimension
 * (the intensity) is displayed using colors. The colors are calculated
 * from the values using a color map.
 *
 * \sa QwtRasterData, QwtColorMap
 */
class PlotWaterfall : public QwtPlotRasterItem
{
public:
    explicit PlotWaterfall(WaterfallData* data, const QString& title = QString());
    ~PlotWaterfall() override;
 
    const WaterfallData* data() const;
 
    void setColorMap(const QwtColorMap&);
 
    const QwtColorMap& colorMap() const;
 
#if QWT_VERSION < 0x060000
    virtual QwtDoubleRect boundingRect() const;
    virtual QSize rasterHint(const QwtDoubleRect&) const;
#endif
 
    int rtti() const override;
 
protected:
#if QWT_VERSION < 0x060000
    QImage renderImage(const QwtScaleMap& xMap,
                       const QwtScaleMap& yMap,
                       const QwtDoubleRect& rect) const;
#else
    QImage renderImage(const QwtScaleMap& xMap,
                       const QwtScaleMap& yMap,
                       const QRectF& rect,
                       const QSize& size = QSize(0, 0)) const override;
#endif
 
private:
    class PrivateData;
    PrivateData* d_data;
};
 
#endif