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#include "tunerfrm.h"
#include <qlabel.h>
#include <qwt_wheel.h>
#include <qwt_slider.h>
#include <qwt_thermo.h>
#include <qwt_math.h>
TunerFrame::TunerFrame(QWidget *p, const char *name):
QFrame(p, name)
{
QLabel *lblTune = new QLabel("Tuning",this);
whlFreq = new QwtWheel(this);
thmTune = new QwtThermo(this);
sldFreq = new QwtSlider(this, "", Qt::Horizontal, QwtSlider::Top);
setFixedSize(720,120);
sldFreq->setGeometry(30,10,660,60);
sldFreq->setScaleMaxMinor(5);
sldFreq->setScaleMaxMajor(12);
sldFreq->setThumbLength(80);
sldFreq->setBorderWidth(1);
thmTune->setGeometry(30,80,90,20);
lblTune->setGeometry(30,100,90,15);
lblTune->setAlignment(Qt::AlignCenter);
whlFreq->setGeometry(540,80,150,30);
whlFreq->setMass(0.5);
whlFreq->setRange(87.5, 108, 0.01);
whlFreq->setTotalAngle(3600.0);
sldFreq->setRange(87.5, 108, 0.01, 10);
thmTune->setOrientation(Qt::Horizontal, QwtThermo::None);
thmTune->setRange(0.0, 1.0);
thmTune->setFillColor(Qt::green);
connect(whlFreq, SIGNAL(valueChanged(double)), SLOT(adjustFreq(double)));
connect(sldFreq, SIGNAL(valueChanged(double)), SLOT(adjustFreq(double)));
}
void TunerFrame::adjustFreq(double frq)
{
double x, field;
static double factor = 13.0 / (108 - 87.5);
x = (frq - 87.5) * factor;
field = qwtSqr(sin(x) * cos(4.0 * x));
thmTune->setValue(field);
if (sldFreq->value() != frq) sldFreq->setValue(frq);
if (whlFreq->value() != frq) whlFreq->setValue(frq);
emit fieldChanged(field);
}
void TunerFrame::setFreq(double frq)
{
whlFreq->setValue(frq);
}
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