Returns the baseline of the first child with a baseline.
Useful when the children are displayed vertically in the same order they appear in the child list.
Source
double defaultComputeDistanceToFirstActualBaseline(TextBaseline baseline) {
assert(!needsLayout);
ChildType child = firstChild;
while (child != null) {
final ParentDataType childParentData = child.parentData;
double result = child.getDistanceToActualBaseline(baseline);
if (result != null)
return result + childParentData.offset.dy;
child = childParentData.nextSibling;
}
return null;
}