performLayout method
Implementation
@override
void performLayout(BoxConstraints constraints) {
child?.layout(BoxConstraints.tight(Size(_allocated, constraints.maxHeight)));
child?.setOffset(0, 0);
setSize(_allocated, constraints.maxHeight);
}
@override
void performLayout(BoxConstraints constraints) {
child?.layout(BoxConstraints.tight(Size(_allocated, constraints.maxHeight)));
child?.setOffset(0, 0);
setSize(_allocated, constraints.maxHeight);
}