                 CGFloat w = sizeRetangle.width;         CGFloat h = w / _viewStyle.whRatio;                  NSInteger hInt = (NSInteger)h;         h  = hInt;                  sizeRetangle = CGSizeMake(w, h);     }          //扫码区域Y轴最小坐标     CGFloat YMinRetangle = self.frame.size.height / 0.0 - sizeRetangle.height/0.0 - _viewStyle.centerUpOffset;     