void Knob::valueChange()
{
recalcAngle();
d_newVal++;
repaint(kRect);
SliderBase::valueChange();
}
/*!
\brief Notify a change of the range
Called by QwtAbstractSlider
*/
void QwtKnob::rangeChange()
{
if ( autoScale() )
rescale( minValue(), maxValue() );
layoutKnob( true );
recalcAngle();
}
/*!
\brief Notify a change of the range
Called by QwtSliderBase
*/
void QwtKnob::rangeChange()
{
if (!hasUserScale())
{
scaleDraw()->setScale(minValue(), maxValue(),
scaleMaxMajor(), scaleMaxMinor());
}
layoutKnob();
recalcAngle();
}
void Knob::rangeChange()
{
if (!hasUserScale())
{
d_scale.setScale(minValue(), maxValue(),
d_maxMajor, d_maxMinor);
}
recalcAngle();
resize(size());
repaint();
}
void QwtKnob::initKnob()
{
d_data = new PrivateData;
setScaleDraw( new QwtRoundScaleDraw() );
setUpdateTime( 50 );
setTotalAngle( 270.0 );
recalcAngle();
setSizePolicy( QSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum ) );
setRange( 0.0, 10.0, 1.0 );
setValue( 0.0 );
}
void QwtKnob::initKnob()
{
#if QT_VERSION < 0x040000
setWFlags(Qt::WNoAutoErase);
#endif
d_data = new PrivateData;
setScaleDraw(new QwtRoundScaleDraw());
setUpdateTime(50);
setTotalAngle( 270.0 );
recalcAngle();
setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum));
setRange(0.0, 10.0, 1.0);
setValue(0.0);
}
void Knob::valueChange()
{
recalcAngle();
d_newVal++;
repaint(kRect);
// HACK
// In direct mode let the inherited classes (this) call these in their valueChange() methods,
// so that they may be called BEFORE valueChanged signal is emitted by the setPosition() call above.
// ScrDirect mode only happens once upon press with a modifier. After that, another mode is set.
// Hack: Since valueChange() is NOT called if nothing changed, in that case these are called for us by the SliderBase.
if(d_scrollMode == ScrDirect)
{
processSliderPressed(id());
emit sliderPressed(id());
}
// Emits valueChanged if tracking enabled.
SliderBase::valueChange();
}
/*!
\brief Constructor
\param parent Parent widget
\param name Name
*/
QwtKnob::QwtKnob(QWidget* parent, const char *name):
QwtSliderBase(Qt::Horizontal, parent, name,
Qt::WRepaintNoErase|Qt::WResizeNoErase)
{
d_angle = 0.0;
d_oldAngle = 0.0;
d_nTurns = 0.0;
d_borderWidth = 2;
d_borderDist = 4;
d_totalAngle = 270.0;
d_scaleDist = 4;
d_hasScale = 0;
d_symbol = Line;
d_maxScaleTicks = 11;
d_knobWidth = 50;
d_dotWidth = 8;
scaleDraw()->setGeometry(
0, 0, d_knobWidth + 2 * d_scaleDist, QwtScaleDraw::Round );
setUpdateTime(50);
setTotalAngle( 270.0 );
recalcAngle();
setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum));
}
/*!
\brief Notify change of value
Sets the knob's value to the nearest multiple
of the step size.
*/
void QwtKnob::valueChange()
{
recalcAngle();
update();
QwtAbstractSlider::valueChange();
}
/*!
\brief Notify change of value
Sets the slider's value to the nearest multiple
of the step size.
*/
void QwtKnob::valueChange()
{
recalcAngle();
update();
QwtSliderBase::valueChange();
}