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#include "dsldial.h"
#include <assert.h>
namespace pv {
namespace view {
dslDial::dslDial(quint64 div, quint64 step,
QVector<quint64> value, QVector<QString> unit)
{
assert(div > 0);
assert(step > 0);
assert((quint64)value.count() == div);
assert(unit.count() > 0);
_div = div;
_step = step;
_value = value;
_unit = unit;
_sel = 0;
}
dslDial::~dslDial()
{
}
void dslDial::paint(QPainter &p, QRectF dialRect, QColor dialColor)
{
p.setRenderHint(QPainter::Antialiasing, true);
p.setPen(dialColor);
p.setBrush(dialColor);
int dialStartAngle = 225 * 16;
int dialSpanAngle = -270 * 16;
// draw dial arc
p.drawArc(dialRect, dialStartAngle, dialSpanAngle);
// draw ticks
p.save();
p.translate(dialRect.center());
p.rotate(45);
for (quint64 i = 0; i < _div; i++) {
// draw major ticks
p.drawLine(0, dialRect.width()/2+3, 0, dialRect.width()/2+8);
// draw minor ticks
for (quint64 j = 0; (j < 5) && (i < _div - 1); j++) {
p.drawLine(0, dialRect.width()/2+3, 0, dialRect.width()/2+5);
p.rotate(54.0/(_div-1));
}
}
// draw pointer
p.rotate(90+270.0/(_div-1)*_sel);
p.drawEllipse(-3, -3, 6, 6);
p.drawLine(3, 0, 0, dialRect.width()/2-3);
p.drawLine(-3, 0, 0, dialRect.width()/2-3);
p.restore();
// draw value
quint64 displayValue = _value[_sel];
quint64 displayIndex = 0;
while(displayValue / _step >= 1) {
displayValue = displayValue / _step;
displayIndex++;
}
QString pText = QString::number(displayValue) + _unit[displayIndex] + "/div";
QFontMetrics fm(p.font());
p.drawText(QRectF(dialRect.left(), dialRect.bottom()-dialRect.width()*0.3+fm.height()*0.5, dialRect.width(), fm.height()), Qt::AlignCenter, pText);
}
void dslDial::set_sel(quint64 sel)
{
assert(sel < _div);
_sel = sel;
}
quint64 dslDial::get_sel()
{
return _sel;
}
bool dslDial::isMin()
{
if(_sel == 0)
return true;
else
return false;
}
bool dslDial::isMax()
{
if(_sel == _div - 1)
return true;
else
return false;
}
quint64 dslDial::get_value()
{
return _value[_sel];
}
bool dslDial::set_value(quint64 value)
{
assert(_value.contains(value));
_sel = _value.indexOf(value, 0);
}
} // namespace view
} // namespace pv
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