Re: improving Arabic-like language support

[Dov Feldstern]

Abdelrazak Younes wrote:

Right now the transformChar() is called only before painting, which is 
wrong because cursor positioning happens at metrics calculation time. So 
to solve this we have two solution:
1) we move the RTL logic out of rowpainter.C and use transformChar() in 
FontMetrics.[Ch] to properly calculates the character level within each 
word.
2) we use Qt for word level bidi stuff for painting and metrics. This 
means that on-screen appearance will be correct even if you didn't set 
the language to Hebrew, Arabic or Farsi. It will just work.


I should have probably asked this a long time ago ;) --- but can you 
please explain exactly what this metrics calculation is? When is the 
"metrics calculation time"? How / where in the code does the cursor 
positioning occur?

Thanks!
Dov