71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
/*****************************************************************************
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* Qwt Polar Examples - Copyright (C) 2008 Uwe Rathmann
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* This file may be used under the terms of the 3-clause BSD License
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*****************************************************************************/
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#include "Plot.h"
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#include "PlotWindow.h"
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#include <QwtScaleEngine>
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#include <QwtRasterData>
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#include <QwtPolarSpectrogram>
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#include <QwtScaleWidget>
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#include <QwtColorMap>
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#include <QLayout>
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namespace
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{
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class ColorMap : public QwtLinearColorMap
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{
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public:
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ColorMap()
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: QwtLinearColorMap( Qt::darkBlue, Qt::yellow )
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{
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#if 1
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addColorStop( 0.00, Qt::black );
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addColorStop( 0.05, Qt::darkRed );
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#else
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addColorStop( 0.05, Qt::blue );
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#endif
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addColorStop( 0.3, Qt::cyan );
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addColorStop( 0.6, Qt::green );
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addColorStop( 0.98, Qt::red );
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}
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};
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}
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PlotWindow::PlotWindow( QWidget* parent )
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: QWidget( parent )
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{
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m_plot = new Plot();
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m_colorScale = new QwtScaleWidget();
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m_colorScale->setAlignment( QwtScaleDraw::RightScale );
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m_colorScale->setColorBarEnabled( true );
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QwtText title( "Intensity" );
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QFont font = m_colorScale->font();
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font.setBold( true );
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title.setFont( font );
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m_colorScale->setTitle( title );
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const QwtInterval interval =
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m_plot->spectrogram()->data()->interval( Qt::ZAxis );
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m_colorScale->setColorMap( interval, new ColorMap() );
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m_plot->spectrogram()->setColorMap( new ColorMap() );
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QwtLinearScaleEngine scaleEngine;
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m_colorScale->setScaleDiv(
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scaleEngine.divideScale( interval.minValue(), interval.maxValue(), 8, 5 ) );
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int startDist, endDist;
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m_colorScale->getBorderDistHint( startDist, endDist );
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m_colorScale->setBorderDist( startDist, endDist );
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QHBoxLayout* layout = new QHBoxLayout( this );
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layout->addWidget( m_plot, 10 );
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layout->addWidget( m_colorScale, 10 );
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}
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