mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-06 00:07:29 -04:00
33fc476d89
* require qwt >=6.2 (and fallback to internal 6.3 if system's qwt doesn't suffice) * debian doesn't have qwt for Qt6 and won't have it for trixie
119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
/******************************************************************************
|
|
* 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 "qwt_global.h"
|
|
#include "qwt_raster_data.h"
|
|
#include "qwt_plot_rasteritem.h"
|
|
|
|
class QwtColorMap;
|
|
template< typename T > class QList;
|
|
|
|
/*!
|
|
\brief A plot item, which displays a spectrogram
|
|
|
|
A spectrogram displays 3-dimensional data, where the 3rd dimension
|
|
( the intensity ) is displayed using colors. The colors are calculated
|
|
from the values using a color map.
|
|
|
|
On multi-core systems the performance of the image composition
|
|
can often be improved by dividing the area into tiles - each of them
|
|
rendered in a different thread ( see QwtPlotItem::setRenderThreadCount() ).
|
|
|
|
In ContourMode contour lines are painted for the contour levels.
|
|
|
|
\sa QwtRasterData, QwtColorMap, QwtPlotItem::setRenderThreadCount()
|
|
*/
|
|
|
|
class QWT_EXPORT QwtPlotSpectrogram : public QwtPlotRasterItem
|
|
{
|
|
public:
|
|
/*!
|
|
The display mode controls how the raster data will be represented.
|
|
\sa setDisplayMode(), testDisplayMode()
|
|
*/
|
|
|
|
enum DisplayMode
|
|
{
|
|
//! The values are mapped to colors using a color map.
|
|
ImageMode = 0x01,
|
|
|
|
//! The data is displayed using contour lines
|
|
ContourMode = 0x02
|
|
};
|
|
|
|
Q_DECLARE_FLAGS( DisplayModes, DisplayMode )
|
|
|
|
explicit QwtPlotSpectrogram( const QString& title = QString() );
|
|
virtual ~QwtPlotSpectrogram();
|
|
|
|
void setDisplayMode( DisplayMode, bool on = true );
|
|
bool testDisplayMode( DisplayMode ) const;
|
|
|
|
void setData( QwtRasterData* data );
|
|
const QwtRasterData* data() const;
|
|
QwtRasterData* data();
|
|
|
|
void setColorMap( QwtColorMap* );
|
|
const QwtColorMap* colorMap() const;
|
|
|
|
void setColorTableSize( int numColors );
|
|
int colorTableSize() const;
|
|
|
|
virtual QwtInterval interval( Qt::Axis ) const QWT_OVERRIDE;
|
|
virtual QRectF pixelHint( const QRectF& ) const QWT_OVERRIDE;
|
|
|
|
void setDefaultContourPen( const QColor&,
|
|
qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
|
|
void setDefaultContourPen( const QPen& );
|
|
QPen defaultContourPen() const;
|
|
|
|
virtual QPen contourPen( double level ) const;
|
|
|
|
void setConrecFlag( QwtRasterData::ConrecFlag, bool on );
|
|
bool testConrecFlag( QwtRasterData::ConrecFlag ) const;
|
|
|
|
void setContourLevels( const QList< double >& );
|
|
QList< double > contourLevels() const;
|
|
|
|
virtual int rtti() const QWT_OVERRIDE;
|
|
|
|
virtual void draw( QPainter*,
|
|
const QwtScaleMap& xMap, const QwtScaleMap& yMap,
|
|
const QRectF& canvasRect ) const QWT_OVERRIDE;
|
|
|
|
protected:
|
|
virtual QImage renderImage(
|
|
const QwtScaleMap& xMap, const QwtScaleMap& yMap,
|
|
const QRectF& area, const QSize& imageSize ) const QWT_OVERRIDE;
|
|
|
|
virtual QSize contourRasterSize(
|
|
const QRectF&, const QRect& ) const;
|
|
|
|
virtual QwtRasterData::ContourLines renderContourLines(
|
|
const QRectF& rect, const QSize& raster ) const;
|
|
|
|
virtual void drawContourLines( QPainter*,
|
|
const QwtScaleMap& xMap, const QwtScaleMap& yMap,
|
|
const QwtRasterData::ContourLines& ) const;
|
|
|
|
void renderTile( const QwtScaleMap& xMap, const QwtScaleMap& yMap,
|
|
const QRect& tile, QImage* ) const;
|
|
|
|
private:
|
|
class PrivateData;
|
|
PrivateData* m_data;
|
|
};
|
|
|
|
Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotSpectrogram::DisplayModes )
|
|
|
|
#endif
|