init method
Implementation
void init(BuildContext context) {
_mediaQueryData = MediaQuery.of(context);
screenWidth = _mediaQueryData!.size.width;
screenHeight = _mediaQueryData!.size.height;
blockSizeHorizontal = (screenWidth! / 100);
blockSizeVertical = (screenHeight! / 100);
_safeAreaHorizontal =
_mediaQueryData!.padding.left + _mediaQueryData!.padding.right;
_safeAreaVertical =
_mediaQueryData!.padding.top + _mediaQueryData!.padding.bottom;
safeBlockHorizontal = (screenWidth! - _safeAreaHorizontal!) / 100;
safeBlockVertical = (screenHeight! - _safeAreaVertical!) / 100;
}