public PdfDeviceInfoSettings()
     : base(FORMAT_PDF)
 {
     Margin = new Rect(
         new Unit(1, UnitType.Inch),
         new Unit(0.5, UnitType.Inch),
         new Unit(1, UnitType.Inch),
         new Unit(0.5, UnitType.Inch)
     );
 }
 public ImageDeviceInfoSettings(string _outputFormat)
     : base(_outputFormat)
 {
     Margin = new Rect(
         new Unit(1, UnitType.Inch),
         new Unit(0.5, UnitType.Inch),
         new Unit(1, UnitType.Inch),
         new Unit(0.5, UnitType.Inch)
     );
 }