/*!
\brief Specify range and step size
\param vmin lower boundary of the interval
\param vmax higher boundary of the interval
\param vstep step width
\param pageSize page size in steps
\warning
\li A change of the range changes the value if it lies outside the
new range. The current value
will *not* be adjusted to the new step raster.
\li vmax < vmin is allowed.
\li If the step size is left out or set to zero, it will be
set to 1/100 of the interval length.
\li If the step size has an absurd value, it will be corrected
to a better one.
*/
void QwtDoubleRange::setRange(double vmin, double vmax, double vstep, int pageSize)
{
bool rchg = ((d_maxValue != vmax) || (d_minValue != vmin));
if (rchg)
{
d_minValue = vmin;
d_maxValue = vmax;
}
//
// look if the step width has an acceptable
// value or otherwise change it.
//
setStep(vstep);
//
// limit page size
//
d_pageSize = qwtLim(pageSize,0,
int(qwtAbs((d_maxValue - d_minValue) / d_step)));
//
// If the value lies out of the range, it
// will be changed. Note that it will not be adjusted to
// the new step width.
setNewValue(d_value, false);
// call notifier after the step width has been
// adjusted.
if (rchg)
rangeChange();
}
/*!\reimp
*/
void QSlider::resizeEvent( QResizeEvent * )
{
rangeChange();
initTicks();
if ( autoMask() )
updateMask();
}
void
QvisOpacitySlider::resizeEvent(QResizeEvent *)
{
rangeChange();
initTicks();
// Delete the gradient pixmap so it will be regenerated before the next
// paint event.
deleteGradientImage();
}
void
QvisOpacitySlider::setValue(int value)
{
int v = value;
if(v < minimum())
v = minimum();
if(v > maximum())
v = maximum();
QAbstractSlider::setValue(v);
rangeChange();
}
void ScrollBar::moveSlider(double min, double max)
{
if (mLogScale)
{
min = log(min);
max = log(max);
}
int sliderTicks;
sliderTicks = qRound((max - min) /
(d_maxBase - d_minBase) * d_baseTicks);
// setRange initiates a valueChanged of the scrollbars
// in some situations. So we block
// and unblock the signals.
blockSignals(true);
setRange(sliderTicks / 2, d_baseTicks - sliderTicks / 2);
int steps = sliderTicks / 200;
if (steps <= 0)
steps = 1;
#if QT_VERSION < 0x040000
setSteps(steps, sliderTicks);
#else
setSingleStep(steps);
setPageStep(sliderTicks);
#endif
int tick;
tick = mapToTick(min + (max - min) / 2);
if (isInverted())
tick = d_baseTicks - tick;
#if QT_VERSION < 0x040000
directSetValue(tick);
rangeChange();
#else
setSliderPosition(tick);
#endif
blockSignals(false);
}
void QRangeControl::setRange( int minValue, int maxValue )
{
if ( minValue > maxValue ) {
#if defined(QT_CHECK_RANGE)
qWarning( "QRangeControl::setRange: minValue %d > maxValue %d",
minValue, maxValue );
#endif
maxValue = minValue;
}
if ( minValue == minVal && maxValue == maxVal )
return;
minVal = minValue;
maxVal = maxValue;
int tmp = bound( val );
rangeChange();
if ( tmp != val ) {
prevVal = val;
val = tmp;
valueChange();
}
}
void DoubleRange::setRange(double vmin, double vmax, double vstep, int pageSize, ConversionMode mode)
{
vmin = convertFrom(vmin, mode);
vmax = convertFrom(vmax, mode);
bool rchg = ((d_maxValue != vmax) || (d_minValue != vmin));
if(!rchg && vstep == d_step && pageSize == d_pageSize) // p4.0.45
return;
if (rchg) {
d_minValue = vmin;
d_maxValue = vmax;
}
//
// look if the step width has an acceptable
// value or otherwise change it.
//
setStep(vstep);
//
// limit page size
//
d_pageSize = MusECore::qwtLim(pageSize,0, int(MusECore::qwtAbs((d_maxValue - d_minValue) / d_step)));
//
// If the value lies out of the range, it
// will be changed. Note that it will not be adjusted to
// the new step width.
setNewValue(d_value, false);
// call notifier after the step width has been
// adjusted.
if (rchg)
rangeChange();
}
void QSlider::setOrientation( Orientation orientation )
{
orient = orientation;
rangeChange();
update();
}
