inSmallScreen property
      
      bool
      get
      inSmallScreen
      
    
    
Return the bool value indicating if running in a small screen or not.
Implementation
static bool get inSmallScreen {
  bool smallScreen;
  // May be manually assigned.
  smallScreen = asSmallScreen;
  if (!smallScreen) {
    smallScreen = screenSize.width < 800;
  }
  return smallScreen;
}