Returns the scroll offset component of the given pixel delta, accounting for the scroll direction and scroll anchor.
A pixel delta is an Offset in pixels. Typically this function is implemented in terms of pixelOffsetToScrollOffset.
Source
double pixelDeltaToScrollOffset(Offset pixelDelta) {
switch (config.scrollDirection) {
case Axis.horizontal:
return pixelOffsetToScrollOffset(pixelDelta.dx);
case Axis.vertical:
return pixelOffsetToScrollOffset(pixelDelta.dy);
}
assert(config.scrollDirection != null);
return null;
}