[reportlab-users] RTL Patch Committed

[Yoann Roman]

Andy Robinson wrote...

> I had a quick look at ICU and PyICU.  Good Python support, pre-built

> DLLs available.

> I took a wild guess and typed....

>    sudo apt-get install python-pyicu

> ...and that works too!

> 

> However, I am not clear how it will solve the problem.  As you said 

> yourself, the font engine should really be doing this.   Could it be 

> that it depends on the fonts themselves, and that the best commercial 

> ones have extra info which allows better rendering of the right pairs?


ICU does the same type of shaping as Pyfribidi. I only mentioned it 
because it had a clear explanation of how that shaping works. Sorry for 
the confusion.

Proper shaping does depend on the font. OpenType fonts essentially 
contain multiple glyphs for a single Unicode code point. For Arabic:
http://www.microsoft.com/typography/otfntdev/arabicot/features.htm

Based on what I've read, it seems Pango can do this glyph selection 
given the text and font. I just haven't confirmed this or if there's a 
way to get the information back out in a usable form to RL.

-- 
Yoann Roman