mainwindow.cpp
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#include "mainwindow.h"
#include "plot.h"
#include "knob.h"
#include "wheelbox.h"
#include <qwt_scale_engine.h>
#include <qlabel.h>
#include <qlayout.h>
MainWindow::MainWindow( QWidget *parent ):
QWidget( parent )
{
const double intervalLength = 10.0; // seconds
d_plot = new Plot( this );
d_plot->setIntervalLength( intervalLength );
d_amplitudeKnob = new Knob( "Amplitude", 0.0, 200.0, this );
d_amplitudeKnob->setValue( 160.0 );
d_frequencyKnob = new Knob( "Frequency [Hz]", 0.1, 20.0, this );
d_frequencyKnob->setValue( 17.8 );
d_intervalWheel = new WheelBox( "Displayed [s]", 1.0, 100.0, 1.0, this );
d_intervalWheel->setValue( intervalLength );
d_timerWheel = new WheelBox( "Sample Interval [ms]", 0.0, 20.0, 0.1, this );
d_timerWheel->setValue( 10.0 );
QVBoxLayout* vLayout1 = new QVBoxLayout();
vLayout1->addWidget( d_intervalWheel );
vLayout1->addWidget( d_timerWheel );
vLayout1->addStretch( 10 );
vLayout1->addWidget( d_amplitudeKnob );
vLayout1->addWidget( d_frequencyKnob );
QHBoxLayout *layout = new QHBoxLayout( this );
layout->addWidget( d_plot, 10 );
layout->addLayout( vLayout1 );
connect( d_amplitudeKnob, SIGNAL( valueChanged( double ) ),
SIGNAL( amplitudeChanged( double ) ) );
connect( d_frequencyKnob, SIGNAL( valueChanged( double ) ),
SIGNAL( frequencyChanged( double ) ) );
connect( d_timerWheel, SIGNAL( valueChanged( double ) ),
SIGNAL( signalIntervalChanged( double ) ) );
connect( d_intervalWheel, SIGNAL( valueChanged( double ) ),
d_plot, SLOT( setIntervalLength( double ) ) );
}
void MainWindow::start()
{
d_plot->start();
}
double MainWindow::frequency() const
{
return d_frequencyKnob->value();
}
double MainWindow::amplitude() const
{
return d_amplitudeKnob->value();
}
double MainWindow::signalInterval() const
{
return d_timerWheel->value();
}