updateLayout method

void updateLayout(
  1. double sheetHeight,
  2. double availableHeight
)

Implementation

void updateLayout(double sheetHeight, double availableHeight) {
  final nextMaxFraction = sheetHeight / availableHeight;
  if (maxFraction != nextMaxFraction) {
    maxFraction = nextMaxFraction;
    WidgetsBinding.instance.addPostFrameCallback((_) {
      if (mounted) setState(() {});
    });
  }
  viewportHeight = availableHeight;
}