[jira] [Created] (PDFBOX-3992) Implement show text with positioning operator (TJ)

["Dan Fickling (JIRA)" <ji...@apache.org>]

Dan Fickling created PDFBOX-3992:
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             Summary: Implement show text with positioning operator (TJ)
                 Key: PDFBOX-3992
                 URL: https://issues.apache.org/jira/browse/PDFBOX-3992
             Project: PDFBox
          Issue Type: Improvement
          Components: PDModel
            Reporter: Dan Fickling


Why: The TJ operator is required to properly implement text justification in unicode fonts. The word spacing operator (Tw) is not sufficient because of note[1] from the PDF specification.

Github user backslash47 has provided a basic implementation if that is of any help:
https://github.com/backslash47/pdfbox/commit/3c528295b16445e58dc9fe895f78384221452be2

Thanks,
Daniel.

[1] Note: Word spacing is applied to every occurrence of the single-byte character code 32 in a string when using a simple font or a composite font that defines code 32 as a single-byte code. It does not apply to occurrences of the byte value 32 in multiple-byte codes. 



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