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pg-tp4/propslider.cpp
2020-03-08 21:29:11 +01:00

64 lines
1.1 KiB
C++

#include "propslider.h"
#include <QDebug>
PropSlider::PropSlider(QWidget *parent)
:QSlider(parent),
mapped_value(mapValue())
{
connect(this, SIGNAL(valueChanged(int)),
this, SLOT(setValue(int)));
}
int PropSlider::mapValue() const
{
return (value - min) * maximum() / (max - min);
}
double PropSlider::unmapValue() const
{
return (double) mapped_value * (max - min) / maximum() + min;
}
void PropSlider::setMinimum(double min)
{
this->min = min;
}
void PropSlider::setMaximum(double max)
{
this->max = max;
((QSlider *) this)->setMaximum((max-min) / step);
}
void PropSlider::setStep(double step)
{
this->step = step;
setMaximum(max);
}
void PropSlider::setValue(double value)
{
qDebug() << "PropSlider, setting from double" << value;
this->value = value;
((QSlider *) this)->setValue(mapValue());
}
void PropSlider::setValue(int mapped_value) {
qDebug() << "PropSlider, setting from int" << mapped_value;
if (mapValue() != mapped_value) {
qDebug() << "Mapped value changed, transmitting to GLArea";
this->mapped_value = mapped_value;
this->value = unmapValue();
emit valueChanged(this->value);
}
}