resizingIntervalUpdated method
The specified interval has been resized by a delta amount. If this interval is above the first item layouted in the list view, this amount will be added up to a cumulative variabile.
Implementation
void resizingIntervalUpdated(_AnimatedSpaceInterval interval, double delta) {
assert(delta != 0.0);
final firstChild = firstChildWithLayout;
if (firstChild == null) return;
if (interval.buildOffset < indexOf(firstChild)) {
_resizeCorrectionAmount += delta;
}
markSafeNeedsLayout();
}