void ScrollBar::setMajorAxisScrollBarPosition(const Pnt2f& Pos)
{
UInt16 MajorAxis, MinorAxis;
if(getOrientation() == ScrollBar::VERTICAL_ORIENTATION)
{
MajorAxis = 1;
}
else
{
MajorAxis = 0;
}
MinorAxis = (MajorAxis+1)%2;
//Calculate the Value Based on the Bar Position
//Int32 ScrollValue( static_cast<Real32>(Pos - editScrollField()->getPosition()[MajorAxis])/static_cast<Real32>(editScrollField()->getSize()[MajorAxis]) * (getMaximum() - getMinimum()) + getMinimum());
Int32 ScrollValue(calculateValueFromPosition(Pos));
if(ScrollValue < getMinimum())
{
ScrollValue = getMinimum();
}
else if(ScrollValue + getExtent() > getMaximum())
{
ScrollValue = getMaximum() - getExtent();
}
getRangeModel()->setValue(ScrollValue);
}
void
CPitchBendEditor::ZoomChanged(
int32 diff)
{
BRect r(Frame());
float scroll = (ScrollValue(B_VERTICAL) + (r.bottom - r.top) / 2) / pixelsPerValue;
verticalZoom += diff;
if (verticalZoom > 12)
verticalZoom = 12;
else if (verticalZoom < 4)
verticalZoom = 4;
Hide();
CalcZoom();
SetScrollRange(scrollRange.x, scrollValue.x, stripLogicalHeight,
(scroll * pixelsPerValue) - (r.bottom - r.top) / 2);
Show();
}
