Extract QR Codes From PDF Files Using Apryse SDK

namespace Program 

{ 

   class Program 

   { 

      static void Main(string[] args) 

      { 

         PDFNet.Initialize("Place license key here"); 

 

         PDFNet.AddResourceSearchPath("Path to BarcodeModule Lib"); 

 

         if (!BarcodeModule.IsModuleAvailable()) 

         { 

            Console.WriteLine(""); 

            Console.WriteLine("Unable to run BarcodeTest: Apryse SDK Barcode Module not available."); 

            Console.WriteLine("---------------------------------------------------------------"); 

            Console.WriteLine("The Barcode Module is an optional add-on, available for download"); 

            Console.WriteLine("at https://dev.apryse.com/. If you have already downloaded this"); 

            Console.WriteLine("module, ensure that the SDK is able to find the required files"); 

            Console.WriteLine("using the PDFNet.AddResourceSearchPath() function."); 

            Console.WriteLine(""); 

            return; 

         } 

 

         ExtractBarcodes(); 

 

      } 

 

      static void ExtractBarcodes() 

      { 

         // Relative path to the folder containing test files. 

         string inputPath = "../TestFiles/Barcode/"; 

         string outputPath = "../TestFiles/Barcode/output/"; 

 

         using (PDFDoc doc = new PDFDoc(inputPath + "barcodes.pdf")) 

         { 

            // Extract the barcodes as a JSON String 

            string json = BarcodeModule.ExtractBarcodesAsString(doc); 

 

            PDFDoc newDoc = new PDFDoc(); 

 

            JsonSerializerOptions options = new JsonSerializerOptions 

            { 

               PropertyNameCaseInsensitive = true, 

               DefaultIgnoreCondition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull 

            }; 

 

            Root? output = JsonSerializer.Deserialize<Root>(json, options); 

 

            int currentPage = 1; 

            foreach (Pages pages in output.Pages) 

            { 

               foreach (BarcodeData data in pages.Barcodes) 

               { 

                  List<double> rect = data.Rect; 

 

                  if (rect != null) 

                  { 

                     Page page = doc.GetPage(currentPage); 

 

                     double pageHeight = page.GetCropBox().Height(); 

 

                     // add padding to improve the look of the barcode pages 

                     double padding = 10; 

 

                     // convert coordinates from top-left origin to bottom-left origin and add padding 

                     double x1 = rect.ElementAt(0) - padding; 

                     double y1 = pageHeight - rect.ElementAt(3) - padding; 

                     double x2 = rect.ElementAt(2) + padding; 

                     double y2 = pageHeight - rect.ElementAt(1) + padding; 

 

                     Rect convertedRect = new Rect(x1, y1, x2, y2); 

 

                     ArrayList pageList = new ArrayList { page }; 

 

 

                     doc.PagePushBack(page); 

 

                     Page clonedPage = doc.GetPage(doc.GetPageCount()); 

 

                     clonedPage.SetCropBox(convertedRect); 

 

                     newDoc.PagePushBack(clonedPage); 

                  } 

               } 

               currentPage++; 

            } 

            newDoc.Save(outputPath + "cropped.pdf", pdftron.SDF.SDFDoc.SaveOptions.e_linearized); 

 

         } 

      } 

 

   } 

 

 //Classes needed to deserialize the json output into 

   public class BarcodeData 

   { 

      public double Angle { get; set; } 

      public List<double> Rect { get; set; } 

      public string Text { get; set; } 

      public string Type { get; set; } 

      public List<double> Vertices { get; set; } 

   } 

 

   public class Pages 

   { 

      public List<BarcodeData> Barcodes { get; set; } 

   } 

 

   public class Root 

   { 

      public List<Pages> Pages { get; set; } 

 

   } 

}