DocumentLink Structure

Summary

Holds the properties of a link inside the document.

Syntax

C++/CLI

Java

Python

[SerializableAttribute()] 
[DataContractAttribute()] 
public struct DocumentLink

public [SerializableAttribute,  
   DataContractAttribute] 
   value class DocumentLink sealed

public class DocumentLink implements Serializable

class DocumentLink:

Remarks

The links of a document page can be get and set using GetLinks and SetLinks and contain the following members:

Member	Description
Bounds	The location and size of the link in the page.
LinkType	Type of the link target: An internal position in the same document or an external value (hyperlink)
Target	The target in the document if this is an internal link
Value	The value (hyperlink) if this is an external link that can automatically be parsed using the regular expressions stored in DocumentText.LinkPatterns.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Document.Writer; 
 
using Leadtools.Document; 
using Leadtools.Caching; 
using Leadtools.Annotations.Engine; 
using Leadtools.Ocr; 
using Leadtools.Barcode; 
using Leadtools.Document.Converter; 
 
public void DocumentPageGetLinksExample() 
{ 
   var cache = GetCache(); 
   var options = new LoadDocumentOptions(); 
   options.Cache = cache; 
   using (var document = DocumentFactory.LoadFromFile(Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf"), options)) 
   { 
      document.IsReadOnly = false; 
      // Show the links before parsing the URL in the text 
      Console.WriteLine("Before get text"); 
      Console.WriteLine("---------"); 
      var page = document.Pages[0]; 
      page.SetLinks(page.GetLinks()); 
      ShowLinks(page); 
 
      // Get all of the DocumentPageFitTypes 
      DocumentPageFitType[] pageFitType = (DocumentPageFitType[])Enum.GetValues(typeof(DocumentPageFitType)); 
      foreach (var type in pageFitType) 
      { 
         Console.WriteLine($"Page fit type: {type}"); 
      } 
 
      // Make sure we will parse the hyper links 
      // DocumentText reference 
      document.Text.AutoParseLinks = true; 
      document.Text.TextExtractionMode = DocumentTextExtractionMode.Auto; 
 
      // Show the regular expressions 
      Console.WriteLine("Parsing links from the text using these regular expressions:"); 
      foreach (var regex in DocumentText.LinkPatterns) 
      { 
         Console.WriteLine(regex.ToString()); 
      } 
 
      // Now, get the text to parse the links from it 
      page.GetText(); 
 
      page.IsLinksModified = false; 
 
      // Show the links before parsing the URL in the text. It should now show the original plus any parsed URLs from the text 
      Console.WriteLine("After get text"); 
      Console.WriteLine("---------"); 
      ShowLinks(page); 
   } 
} 
 
private static void ShowLinks(Leadtools.Document.DocumentPage page) 
{ 
   // DocumentLink reference 
   var links = page.GetLinks(); 
   if (links != null) 
   { 
      int index = 0; 
      Console.WriteLine("Page " + page.PageNumber); 
      foreach (var link in links) 
      { 
         Console.WriteLine(index++); 
         Console.WriteLine("  Bounds:" + link.Bounds); 
         Console.WriteLine("  LinkType:" + link.LinkType); 
         if (link.LinkType == DocumentLinkType.Value) 
         { 
            Console.WriteLine("  Value:" + link.Value); 
         } 
         else 
         { 
            // DocumentLinkTarget reference 
            Console.WriteLine("  Target.PageFitType:" + link.Target.PageFitType); 
            Console.WriteLine("  Target.PageNumber:" + link.Target.PageNumber); 
            Console.WriteLine("  Target.Position:" + link.Target.Position); 
            Console.WriteLine("  Target.ZoomPercent:" + link.Target.ZoomPercent); 
         } 
         Console.WriteLine(); 
      } 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.net.MalformedURLException; 
import java.net.URI; 
import java.net.URISyntaxException; 
import java.net.URL; 
import java.nio.file.Files; 
import java.nio.file.Paths; 
import java.util.ArrayList; 
import java.util.Calendar; 
import java.util.List; 
import java.util.concurrent.Callable; 
import java.util.concurrent.ExecutorService; 
import java.util.concurrent.Executors; 
import java.util.concurrent.Future; 
import java.util.regex.Pattern; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.annotations.engine.*; 
import leadtools.barcode.*; 
import leadtools.caching.*; 
import leadtools.codecs.*; 
import leadtools.document.*; 
import leadtools.document.DocumentMimeTypes.UserGetDocumentStatusHandler; 
import leadtools.document.converter.*; 
import leadtools.document.writer.*; 
import leadtools.ocr.*; 
 
 
public void documentPageGetLinksExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   FileCache cache = getCache(); 
   LoadDocumentOptions options = new LoadDocumentOptions(); 
   options.setCache(cache); 
   LEADDocument document = DocumentFactory.loadFromFile(combine(LEAD_VARS_IMAGES_DIR, "Leadtools.pdf"), options); 
   document.setReadOnly(false); 
   // Show the links before parsing the URL in the text 
   System.out.println("Before get text"); 
   System.out.println("---------"); 
   DocumentPage page = document.getPages().get(0); 
   page.setLinks(page.getLinks()); 
   showLinks(page); 
 
   // Get all of the DocumentPageFitTypes 
   DocumentPageFitType[] pageFitType = DocumentPageFitType.values(); 
   for (DocumentPageFitType type : pageFitType) { 
      System.out.println("Page fit type: " + type); 
   } 
 
   // Make sure we will parse the hyper links 
   // DocumentText reference 
   document.getText().setAutoParseLinks(true); 
   document.getText().setTextExtractionMode(DocumentTextExtractionMode.AUTO); 
 
   // Show the regular expressions 
   System.out.println("Parsing links from the text using these regular expressions:"); 
   for (Pattern regex : DocumentText.getLinkPatterns()) { 
      System.out.println(regex.toString()); 
   } 
 
   // Now, get the text to parse the links from it 
   page.getText(); 
 
   page.setLinkedModified(false); 
 
   // Show the links before parsing the URL in the text. It should now show the 
   // original plus any parsed URLs from the text 
   System.out.println("After get text"); 
   System.out.println("---------"); 
   showLinks(page); 
   assertTrue(page.getLinks() != null); 
} 
 
private void showLinks(DocumentPage page) { 
   // DocumentLink reference 
   DocumentLink[] links = page.getLinks(); 
   if (links != null) { 
      int index = 0; 
      System.out.println("Page " + page.getPageNumber()); 
      for (DocumentLink link : links) { 
         System.out.println("Index: " + index++); 
         System.out.println("  Bounds:" + link.getBounds()); 
         System.out.println("  LinkType:" + link.getLinkType()); 
         if (link.getLinkType() == DocumentLinkType.VALUE) { 
            System.out.println("  Value:" + link.getValue()); 
         } else { 
            // DocumentLinkTarget reference 
            System.out.println("  Target.PageFitType:" + link.getTarget().getPageFitType()); 
            System.out.println("  Target.PageNumber:" + link.getTarget().getPageNumber()); 
            System.out.println("  Target.Position:" + link.getTarget().getPosition()); 
            System.out.println("  Target.ZoomPercent:" + link.getTarget().getZoomPercent()); 
         } 
      } 
   } 
}

Requirements

Target Platforms

Reference

Leadtools.Document Namespace

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Help Version 23.0.2024.2.29

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