public String getVolumeUnitString() {
String units = _preferences.volume_units().get();
if (units.equalsIgnoreCase("gal_us")) return "Gal (US)";
if (units.equalsIgnoreCase("gal_imp")) return "Gal (Imp)";
return "L";
}
public double volume(double litres) {
String units = _preferences.volume_units().get();
if (units.equalsIgnoreCase("gal_us")) return litersToGallons(litres, Gallons.US);
if (units.equalsIgnoreCase("gal_imp")) return litersToGallons(litres, Gallons.Imperial);
return litres;
}
