BookmarksParsingSample.cs :  » PDF » PDF-Clown » it » stefanochizzolini » clown » samples » C# / CSharp Open Source

using it.stefanochizzolini.clown.documents;
using it.stefanochizzolini.clown.documents.interaction.navigation.document;
using it.stefanochizzolini.clown.files;
using it.stefanochizzolini.clown.objects;

using System;

namespace it.stefanochizzolini.clown.samples{
  /**
    <summary>This sample demonstrates how to inspect the bookmarks of a PDF document.</summary>
  */
  public class BookmarksParsingSample
    : ISample
  {
    public void Run(
      SampleLoader loader
      )
    {
      // (boilerplate user choice -- ignore it)
      string filePath = loader.GetPdfFileChoice("Please select a PDF file");

      // 1. Open the PDF file!
      File file = new File(filePath);
      // Get the PDF document!
      Document document = file.Document;

      // 2. Get the bookmarks collection!
      Bookmarks bookmarks = document.Bookmarks;
      if(bookmarks == null)
      {
        Console.WriteLine("\nNo bookmark available (Outline dictionary doesn't exist).");
        return;
      }

      Console.WriteLine("\nIterating through the bookmarks collection (please wait)...\n");

      // 3. Show the bookmarks!
      PrintBookmarks(bookmarks);
    }

    private void PrintBookmarks(
      Bookmarks bookmarks
      )
    {
      if(bookmarks == null)
        return;

      foreach(Bookmark bookmark in bookmarks)
      {
        // Show current bookmark!
        Page page = bookmark.Destination.Page;
        Console.WriteLine("Bookmark '" + bookmark.Title + "'");
        Console.WriteLine("    Target Page: number = " + (page.Index + 1) + "; ID = " + ((PdfReference)page.BaseObject).ID);

        // Show child bookmarks!
        PrintBookmarks(bookmark.Bookmarks);
      }
    }
  }
}