iTextSharp – How to get the position of word on a page

by

Yes there is. Check out the text.pdf.parser package, specifically LocationTextExtractionStrategy. Actually, that might not do the trick either. You’ll probably want to write your own TextExtractionStrategy to feed into PdfTextExtractor:

MyTexExStrat strat = new MyTexExStrat();
PdfTextExtractor.getTextFromPage(reader, pageNum, strat);
// get the strings-n-rects from strat.

public class MyTexExStrat implements TextExtractionStrategy {
    void beginTextBlock() {}
    void endTextBlock() {}
    void renderImage(ImageRenderInfo info) {}
    void renderText(TextRenderInfo info) {
      // track text and location here.
    }
}

You’ll probably want to look at the source for LocationTextExtractionStrategy to see how it combines text that shares a baseline. You might even just modify LTES to store parallel arrays of strings and rects.

PS: to build the rects, you can just get the AscentLine & DescentLine and use those coordinates as the top and bottom corners:

Vector bottomLeft = info.getDescentLine().getStartPoint();
Vector topRight = info.getAscentLine().getEndPoint();
Rectangle rect = new Rectangle(bottomLeft.get(Vector.I1),
                               bottomLeft.get(Vector.I2),
                               topRight.get(Vector.I1),
                               topRight.get(Vector.I2));

Warning: The above code ass-u-mes that the text is horizontal and proceeds from left to right. Rotated text will screw it up, as will vertical text or right-to-left (Arabic, Hebrew) text. For most applications, the above should be fine, but know it’s limits.

Good hunting.

More Related Contents:

  1. Convert HTML to PDF in .NET [closed]
  2. Can’t get Czech characters while generating a PDF
  3. Reading pdf content using iTextSharp in C#
  4. Reading PDF content with itextsharp dll in VB.NET or C#
  5. How To Remove Whitespace on Merge
  6. Merging multiple PDFs using iTextSharp in c#.net
  7. How to merge multiple pdf files (generated in run time)?
  8. Generate a PDF that automatically prints
  9. How to return PDF to browser in MVC?
  10. iTextSharp – Sending in-memory pdf in an email attachment
  11. Itextsharp: Adjust 2 elements on exactly one page
  12. iTextSharp Creating a Footer Page # of #
  13. Extract image from PDF using itextsharp
  14. Returning iTextSharp PDF as memorystream causes StreamNotSupported
  15. How can I send a file document to the printer and have it print?
  16. how can i get text formatting with iTextSharp
  17. Print Pdf in C# [closed]
  18. How to programmatically print to PDF file without prompting for filename in C# using the Microsoft Print To PDF printer that comes with Windows 10
  19. using ITextSharp to extract and update links in an existing PDF
  20. How to convert PDF files to images
  21. Add Header and Footer for PDF using iTextsharp
  22. Can itextsharp.xmlworker render embedded images?
  23. Convert Pdf file pages to Images with itextsharp
  24. HTML to List using XMLWorker
  25. Viewing PDF in Windows forms using C# [closed]
  26. iText or iTextSharp rudimentary text edit
  27. How to render an ASP.NET MVC View in PDF format
  28. JPG to PDF Convertor in C#
  29. Combine two (or more) PDF’s
  30. External signing PDF with iText

Leave a Comment