Leonard,
By logical as opposed to visual order, do you mean the order in which the
characters would be pronounced, or do you mean the order in which they are
painted to the output device according to a left-handed coordinate space?
"Youssef" in Arabic is spelled ya-waw-sin-fa, but it must be written as
fa-sin-waw-ya in a PDF file in order to work properly in Acrobat 6 ME and
Acrobat 7. Does this "reversing" indeed place the characters in "logical"
order? Can you point me to where it discusses this in the Unicode specification?
Thank you so much.
Youssef Eldakar
Bibliotheca Alexandrina
-----Original Message-----
From: Leonard Rosenthol [mailto:[EMAIL PROTECTED]
Sent: Tue 5/17/2005 1:55 PM
To: Youssef Eldakar; itext-questions@lists.sourceforge.net
Cc:
Subject: Re: [iText-questions] Adobe Reader v6, v7, and Arabic Text
At 04:07 AM 5/17/2005, Youssef Eldakar wrote:
>It appears that Adobe changed the way Adobe Reader handles Arabic text
in v7.
Yes, they did. They made it so that the English ("normal")
version of Acrobat is ME aware - no longer do users need a separate
version
of Acrobat when working with Arabic/Hebrew/etc.
>In v6, it used to be that Arabic characters had to be written in normal
>character order in order to copy-and-paste and search properly, while
in
>v6 ME (Middle Eastern), they had to be written in reverse order. Now,
it
>appears that v7 has adopted v6 ME's behavior, so Arabic characters
have to
>be written in reverse order.
ME 6 and Acrobat 7 follow standard Unicode rules for ME/RTL
data -
such that the extraction is based on logical and NOT visual order. They
also both have knowledge of RTL glyph and codepoint rules, provided that
the document(s) in question have appropriate font and/or Unicode
internals
(aka /ToUnicode table)
>So far, there does not seem to be a v7 ME release.
If there is - it will only be for localization.
>Is anybody aware of this change? Is it officially documented anywhere?
>
Yes, in the developer notes that I wrote for Adobe ;).
Leonard
---------------------------------------------------------------------------
Leonard Rosenthol <mailto:[EMAIL PROTECTED]>
Chief Technical Officer <http://www.pdfsages.com>
PDF Sages, Inc. 215-938-7080 (voice)
215-938-0880 (fax)
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