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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
#ifndef QWT_PLOT_SPECTROGRAM_H
#define QWT_PLOT_SPECTROGRAM_H
#include <qglobal.h>
#include "qwt_valuelist.h"
#include "qwt_raster_data.h"
#include "qwt_plot_rasteritem.h"
class QwtColorMap;
/*!
\brief A plot item, which displays a spectrogram
A spectrogram displays threedimenional data, where the 3rd dimension
( the intensity ) is displayed using colors. The colors are calculated
from the values using a color map.
In ContourMode contour lines are painted for the contour levels.
\image html spectrogram3.png
\sa QwtRasterData, QwtColorMap
*/
class QWT_EXPORT QwtPlotSpectrogram: public QwtPlotRasterItem
{
public:
/*!
The display mode controls how the raster data will be represented.
- ImageMode\n
The values are mapped to colors using a color map.
- ContourMode\n
The data is displayed using contour lines
When both modes are enabled the contour lines are painted on
top of the spectrogram. The default setting enables ImageMode.
\sa setDisplayMode(), testDisplayMode()
*/
enum DisplayMode
{
ImageMode = 1,
ContourMode = 2
};
explicit QwtPlotSpectrogram(const QString &title = QString::null);
virtual ~QwtPlotSpectrogram();
void setDisplayMode(DisplayMode, bool on = true);
bool testDisplayMode(DisplayMode) const;
void setData(const QwtRasterData &data);
const QwtRasterData &data() const;
void setColorMap(const QwtColorMap &);
const QwtColorMap &colorMap() const;
virtual QwtDoubleRect boundingRect() const;
virtual QSize rasterHint(const QwtDoubleRect &) const;
void setDefaultContourPen(const QPen &);
QPen defaultContourPen() const;
virtual QPen contourPen(double level) const;
void setConrecAttribute(QwtRasterData::ConrecAttribute, bool on);
bool testConrecAttribute(QwtRasterData::ConrecAttribute) const;
void setContourLevels(const QwtValueList &);
QwtValueList contourLevels() const;
virtual int rtti() const;
virtual void draw(QPainter *p,
const QwtScaleMap &xMap, const QwtScaleMap &yMap,
const QRect &rect) const;
protected:
virtual QImage renderImage(
const QwtScaleMap &xMap, const QwtScaleMap &yMap,
const QwtDoubleRect &rect) const;
virtual QSize contourRasterSize(
const QwtDoubleRect &, const QRect &) const;
virtual QwtRasterData::ContourLines renderContourLines(
const QwtDoubleRect &rect, const QSize &raster) const;
virtual void drawContourLines(QPainter *p,
const QwtScaleMap &xMap, const QwtScaleMap &yMap,
const QwtRasterData::ContourLines& lines) const;
private:
class PrivateData;
PrivateData *d_data;
};
#endif