getIntrinsicHeight method

@override int getIntrinsicHeight(int width)

Computes the intrinsic height of this widget under the given width constraint.

Implementation

@override
int getIntrinsicHeight(int width) {
  // Run within a zone specifying #isMeasuringIntrinsics = true to prevent
  // temporary mounting of children from polluting or corrupting the global
  // GlobalKey registry.
  return runZoned(() {
    final rootContext = StatelessElement(this)..mount(null);
    final h = rootContext.childElement?.widget.getIntrinsicHeight(width) ?? 0;
    rootContext.unmount();
    return h;
  }, zoneValues: {#isMeasuringIntrinsics: true});
}