updateOutOfBandData method
- @override
override
Called during layoutChildSequence for each child.
Typically used by subclasses to update any out-of-band data, such as the max scroll extent, for each child.
Implementation
@override
void updateOutOfBandData(GrowthDirection growthDirection, SliverGeometry childLayoutGeometry) {
assert(growthDirection == GrowthDirection.forward);
_maxScrollExtent += childLayoutGeometry.scrollExtent;
if (childLayoutGeometry.hasVisualOverflow)
_hasVisualOverflow = true;
_shrinkWrapExtent += childLayoutGeometry.maxPaintExtent;
}