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TargetPosition Property

Summary
Position in target page to scroll to for this internal link.
Syntax
C#
C++/CLI
Java
Python
public PDFPoint TargetPosition { get; set; } 
public PDFPoint getTargetPosition(); 
public void setTargetPosition( 
   PDFPoint pDFPoint 
); 
public: 
property PDFPoint TargetPosition { 
   PDFPoint get(); 
   void set (    PDFPoint ); 
} 
TargetPosition # get and set (PDFInternalLink) 

Property Value

A PDFPoint that represents the position, in PDF units (1/72 of an inch and bottom-left), of the target page to scroll to. The default value is an empty PDFPoint.

Remarks

The position is in PDF units (1/72 of an inch and bottom-left). So to go to the top of the page, you must go to "0, PageHeight". You can use the PDFDocumentPage.ConvertPoint helper method to convert from pixel or inches to PDF units and back.

Example
C#
Java
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Controls; 
using Leadtools.Pdf; 
using Leadtools.Svg; 
using Leadtools.WinForms; 
 
 
public void PDFDocumentParseDocumentStructureExample() 
{ 
   string pdfFileName1 = Path.Combine(LEAD_VARS.ImagesDir, @"Leadtools.pdf"); 
   string pdfFileName2 = Path.Combine(LEAD_VARS.ImagesDir, @"Bookmarks.pdf"); 
 
   // Create a version of the source file with a few bookmarks 
   PDFFile file = new PDFFile(pdfFileName1); 
   // Load the pages 
   file.Load(); 
   List<PDFBookmark> bookmarks = new List<PDFBookmark>(); 
 
   // We will bookmarks for each page, cascading levels: 
   // Goto page 1 
   //    Goto page 2 
   //       Goto page 3 
   //          Goto page 4 
   int level = 0; 
   for (int i = 0; i < file.Pages.Count; i++) 
   { 
      PDFFilePage page = file.Pages[i]; 
 
      PDFBookmark bookmark = new PDFBookmark(); 
      bookmark.Title = "Goto page " + page.PageNumber.ToString(); 
      bookmark.BookmarkStyle = PDFBookmarkStyle.Plain; 
      bookmark.Level = level; 
      bookmark.TargetPageNumber = page.PageNumber; 
      bookmark.TargetPageFitType = PDFPageFitType.Default; 
      bookmark.TargetPosition = new PDFPoint(0, page.Height); 
      bookmark.TargetZoomPercent = 0; 
      bookmarks.Add(bookmark); 
 
      level++; 
      if (level > 8) 
      { 
         // Reset levels 
         level = 0; 
      } 
   } 
 
   file.WriteBookmarks(bookmarks, pdfFileName2); 
 
   // Create a document for the output file 
   using (PDFDocument document = new PDFDocument(pdfFileName2)) 
   { 
      // Now read the bookmarks and internal links in the document 
      document.ParseDocumentStructure(PDFParseDocumentStructureOptions.InternalLinks | PDFParseDocumentStructureOptions.Bookmarks); 
 
      Console.WriteLine("{0} bookmarks found:", document.Bookmarks.Count); 
      foreach (PDFBookmark bookmark in document.Bookmarks) 
      { 
         Console.WriteLine(" Title: {0}, Level: {1}, Target page: {2}", bookmark.Title, bookmark.Level, bookmark.TargetPageNumber); 
      } 
 
      Console.WriteLine("{0} Internal links found:", document.InternalLinks.Count); 
      foreach (PDFInternalLink internalLink in document.InternalLinks) 
      { 
         Console.WriteLine(" Source bounds: {0}, Target page: {1}", internalLink.SourceBounds, internalLink.TargetPageNumber); 
      } 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
} 
 
import java.io.BufferedWriter; 
import java.io.Console; 
import java.io.File; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.io.OutputStream; 
import java.io.OutputStreamWriter; 
import java.nio.Buffer; 
import java.nio.file.Files; 
import java.nio.file.Path; 
import java.nio.file.Paths; 
import java.nio.file.StandardOpenOption; 
import java.sql.Date; 
import java.text.SimpleDateFormat; 
import java.time.LocalDateTime; 
import java.util.ArrayList; 
import java.util.List; 
 
import javax.xml.validation.Schema; 
 
import org.apache.lucene.store.Directory; 
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.barcode.*; 
import leadtools.codecs.*; 
import leadtools.pdf.*; 
import leadtools.svg.*; 
 
 
public void pdfDocumentParseDocumentStructureExample() { 
   String LEAD_VARS_ImagesDir = "C:\\LEADTOOLS23\\Resources\\Images"; 
   String pdfFileName1 = combine(LEAD_VARS_ImagesDir, "Leadtools.pdf"); 
   String pdfFileName2 = combine(LEAD_VARS_ImagesDir, "Bookmarks.pdf"); 
 
   // Create a version of the source file with a few bookmarks 
   PDFFile file = new PDFFile(pdfFileName1); 
   // Load the pages 
   file.load(); 
   ArrayList<PDFBookmark> bookmarks = new ArrayList<PDFBookmark>(); 
 
   // We will bookmarks for each page, cascading levels: 
   // Goto page 1 
   // Goto page 2 
   // Goto page 3 
   // Goto page 4 
   int level = 0; 
   for (int i = 0; i < file.getPageCount(); i++) { 
 
      PDFFilePage page = file.getPages().get(i); 
      PDFBookmark bookmark = new PDFBookmark(); 
      bookmark.setTitle("Goto page " + page.getPageNumber()); 
      bookmark.setBookmarkStyle(PDFBookmarkStyle.PLAIN); 
      bookmark.setLevel(level); 
      bookmark.setTargetPageNumber(page.getPageNumber()); 
      bookmark.setTargetPageFitType(PDFPageFitType.DEFAULT); 
      bookmark.setTargetPosition(new PDFPoint(0, page.getHeight())); 
      bookmark.setTargetZoomPercent(0); 
      bookmarks.add(bookmark); 
 
      level++; 
      if (level > 8) { 
         // Reset levels 
         level = 0; 
      } 
 
   } 
   file.writeBookmarks(bookmarks, pdfFileName2); 
 
   // Create a document for the output file 
   PDFDocument document = new PDFDocument(pdfFileName2); 
   // Now read the bookmarks and internal links in the document 
   document.parseDocumentStructure(PDFParseDocumentStructureOptions.INTERNAL_LINKS.getValue() 
         | PDFParseDocumentStructureOptions.BOOKMARKS.getValue()); 
 
   System.out.printf("%1s bookmarks found:%n", document.getBookmarks().size()); 
   assertTrue(document.getBookmarks().size() == 25); 
   for (PDFBookmark bookmark : document.getBookmarks()) { 
      System.out.printf(" Title: %1s, Level: %2s, Target page: %3s%n", bookmark.getTitle(), bookmark.getLevel(), 
            bookmark.getTargetPageNumber()); 
   } 
 
   System.out.printf("%1s Internal links found:%n", document.getInternalLinks().size()); 
   assertTrue(document.getInternalLinks().size() == 18); 
   for (PDFInternalLink internalLink : document.getInternalLinks()) { 
      System.out.printf(" Source bounds: %1s, Target page: %2s%n", internalLink.getSourceBounds(), 
            internalLink.getTargetPageNumber()); 
   } 
 
} 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
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Leadtools.Pdf Assembly

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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.