viewportExtremeScrollExtent method
double
viewportExtremeScrollExtent({
- required RenderViewportBase<
ContainerParentDataMixin< viewport,RenderSliver> > - required RenderSliverMultiBoxAdaptor obj,
inherited
Getting the extreme scroll extent of viewport.
The maxScrollExtent
will be returned when growthDirection is forward.
The minScrollExtent
will be returned when growthDirection is reverse.
Implementation
double viewportExtremeScrollExtent({
required RenderViewportBase viewport,
required RenderSliverMultiBoxAdaptor obj,
}) {
final offset = viewport.offset;
if (offset is! ScrollPosition) {
return 0;
}
return obj.isForwardGrowthDirection
? offset.maxScrollExtent
: offset.minScrollExtent;
}