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#include <qlayout.h>
#include <qlabel.h>
#include <qwt_wheel.h>
#include <qwt_slider.h>
#include <qwt_thermo.h>
#include <qwt_math.h>
#include "tunerfrm.h"
class TuningThermo: public QWidget
{
public:
TuningThermo(QWidget *parent):
QWidget(parent)
{
d_thermo = new QwtThermo(this);
d_thermo->setOrientation(Qt::Horizontal, QwtThermo::NoScale);
d_thermo->setRange(0.0, 1.0);
d_thermo->setFillColor(Qt::green);
QLabel *label = new QLabel("Tuning", this);
label->setAlignment(Qt::AlignCenter);
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setMargin(0);
layout->addWidget(d_thermo);
layout->addWidget(label);
setFixedWidth(3 * label->sizeHint().width());
}
void setValue(double value)
{
d_thermo->setValue(value);
}
private:
QwtThermo *d_thermo;
};
TunerFrame::TunerFrame(QWidget *parent):
QFrame(parent)
{
d_sldFreq = new QwtSlider(this, Qt::Horizontal, QwtSlider::TopScale);
d_sldFreq->setRange(87.5, 108, 0.01, 10);
d_sldFreq->setScaleMaxMinor(5);
d_sldFreq->setScaleMaxMajor(12);
d_sldFreq->setThumbLength(80);
d_sldFreq->setBorderWidth(1);
d_thmTune = new TuningThermo(this);
d_whlFreq = new QwtWheel(this);
d_whlFreq->setMass(0.5);
d_whlFreq->setRange(87.5, 108, 0.01);
d_whlFreq->setTotalAngle(3600.0);
d_whlFreq->setFixedHeight(30);
connect(d_whlFreq, SIGNAL(valueChanged(double)), SLOT(adjustFreq(double)));
connect(d_sldFreq, SIGNAL(valueChanged(double)), SLOT(adjustFreq(double)));
QVBoxLayout *mainLayout = new QVBoxLayout(this);
mainLayout->setMargin(10);
mainLayout->setSpacing(5);
mainLayout->addWidget(d_sldFreq);
QHBoxLayout *hLayout = new QHBoxLayout;
hLayout->setMargin(0);
hLayout->addWidget(d_thmTune, 0);
hLayout->addStretch(5);
hLayout->addWidget(d_whlFreq, 2);
mainLayout->addLayout(hLayout);
}
void TunerFrame::adjustFreq(double frq)
{
const double factor = 13.0 / (108 - 87.5);
const double x = (frq - 87.5) * factor;
const double field = qwtSqr(sin(x) * cos(4.0 * x));
d_thmTune->setValue(field);
if (d_sldFreq->value() != frq)
d_sldFreq->setValue(frq);
if (d_whlFreq->value() != frq)
d_whlFreq->setValue(frq);
emit fieldChanged(field);
}
void TunerFrame::setFreq(double frq)
{
d_whlFreq->setValue(frq);
}
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