이미지 사이즈 바꾸기

File? getResizeImage(File originalImage){
  Image image = decodeImage(originalImage.readAsBytesSync())!;
  int standard = 800;
  int width  = image.width;
  int height = image.height;
  double ratio = width/height;
  Image? resizedImage;
  if(ratio>1) resizedImage =  copyResize(image, width: min(width, standard), height: min(width.toDouble()/ratio, standard.toDouble()/ratio).toInt());
  else resizedImage =  copyResize(image, width: min(width*ratio, standard*ratio).toInt(), height: min(height, standard).toInt());
  File newFile  =  File(originalImage.path);
  newFile.writeAsBytesSync(encodeJpg(resizedImage, quality: 95),);
  return newFile;
}