pixelRatio property
      
      double?
      get
      pixelRatio
      
    
    
设备的像素密度 The size of the media in logical pixels (e.g, the size of the screen).
Implementation
double? get pixelRatio => _data.devicePixelRatio;设备的像素密度 The size of the media in logical pixels (e.g, the size of the screen).
double? get pixelRatio => _data.devicePixelRatio;