/*!
\brief Notify a change of the range
Called by QwtAbstractSlider
*/
void QwtKnob::rangeChange()
{
if ( autoScale() )
rescale( minValue(), maxValue() );
layoutKnob( true );
recalcAngle();
}
/*!
\brief Set the total angle by which the knob can be turned
\param angle Angle in degrees.
The default angle is 270 degrees. It is possible to specify
an angle of more than 360 degrees so that the knob can be
turned several times around its axis.
*/
void QwtKnob::setTotalAngle (double angle)
{
if (angle < 10.0)
d_totalAngle = 10.0;
else
d_totalAngle = angle;
scaleDraw()->setAngleRange( -0.5 * d_totalAngle, 0.5 * d_totalAngle);
layoutKnob();
}
/*!
\brief Notify a change of the range
Called by QwtSliderBase
*/
void QwtKnob::rangeChange()
{
if (!hasUserScale())
{
scaleDraw()->setScale(minValue(), maxValue(),
scaleMaxMajor(), scaleMaxMinor());
}
layoutKnob();
recalcAngle();
}
/*!
Handle QEvent::StyleChange and QEvent::FontChange;
\param event Change event
*/
void QwtKnob::changeEvent( QEvent *event )
{
switch( event->type() )
{
case QEvent::StyleChange:
case QEvent::FontChange:
layoutKnob( true );
break;
default:
break;
}
}
/*!
Recalculates the layout
\sa layoutKnob()
*/
void QwtKnob::scaleChange()
{
layoutKnob( true );
}
/*!
\brief Set the knob's border width
\param borderWidth new border width
*/
void QwtKnob::setBorderWidth( int borderWidth )
{
d_data->borderWidth = qMax( borderWidth, 0 );
layoutKnob( true );
}
/*!
\brief Change the knob's width.
The specified width must be >= 5, or it will be clipped.
\param width New width
*/
void QwtKnob::setKnobWidth( int width )
{
d_data->knobWidth = qMax( width, 5 );
layoutKnob( true );
}
/*!
Qt Resize Event
\param event Resize event
*/
void QwtKnob::resizeEvent( QResizeEvent *event )
{
Q_UNUSED( event );
layoutKnob( false );
}
/*!
Recalculates the layout
\sa QwtKnob::layoutKnob()
*/
void QwtKnob::fontChange(const QFont &f)
{
QwtSliderBase::fontChange( f );
layoutKnob();
}
/*!
\brief Set the knob's border width
\param bw new border width
*/
void QwtKnob::setBorderWidth(int bw)
{
d_borderWidth = qwtMax(bw, 0);
layoutKnob();
}
/*!
\brief Change the knob's width.
The specified width must be >= 5, or it will be clipped.
\param w New width
*/
void QwtKnob::setKnobWidth(int w)
{
d_knobWidth = qwtMax(w,5);
layoutKnob();
}
/*!
\brief Qt Resize Event
*/
void QwtKnob::resizeEvent(QResizeEvent *)
{
layoutKnob( FALSE );
}
void QwtKnob::fontChange(const QFont &f)
{
QwtAbstractSlider::fontChange( f );
layoutKnob();
}
/*!
Qt Resize Event
*/
void QwtKnob::resizeEvent(QResizeEvent *event)
{ // lehrig R Kardell begin
d_data->knobWidth = qwtMax(event->size().width() -50 , 5 ); // make room for knob inside box
// lehrig R Kardell end
layoutKnob( false );
}
/*!
\brief Qt Resize Event
*/
void QwtKnob::resizeEvent(QResizeEvent *)
{
layoutKnob( false );
}
