Arabic font about u8g2 HOT 7 CLOSED

You're great Oliver
I'm waiting for Ver2.1
And I promise the first code on my lovely SSD1306 OLED will be:

u8g2.print("اولیور به ایران خوش آمدی"); //Means "Welcome to Iran Oliver" ;) ;)

from u8g2.

I have created several arabic fonts:
https://raw.githubusercontent.com/wiki/olikraus/u8g2/fntpic/u8g2_font_cu12_t_arabic.png
https://raw.githubusercontent.com/wiki/olikraus/u8g2/fntpic/u8g2_font_10x20_t_arabic.png
https://raw.githubusercontent.com/wiki/olikraus/u8g2/fntpic/u8g2_font_unifont_t_arabic.png

so you can choose between three fonts at the moment.

from u8g2.

looks ok, but i am not sure because of the writing direction. Kerning is not supported...

from u8g2.

Yes, the direction is right to left.
Is'nt there any hope for kerning?

from u8g2.

U8g2 fonts are derived from the BDF file format. To my knowledge, this BDF file format does not contain any kerning information. So u8g2 font calculation tool chain can not get and handle this information.

The only option what i could imagine, is that we add the kerning information as an extra table manually. Would this be an option?

from u8g2.

Currently i am thinking on the introduction of a kerning table, which has to be added manually.
Something like this:
uint16_t kerning_table[] =
{
code1, code2, kerning,
code1, code2, kerning,
code1, code2, kerning,
...
};
Probably you have to experiment a little bit and derive the kerning table manually. This mean, u8g2 project will not provide any kerning table (mainly because of the above reason, that the kerning is not there in the font sources)
Then there would be a function
u8g2.setKerningTable(kerning_table);

What do you think?

from u8g2.

afm files contain proper kerning, some fonts are mentioned here.
The kerning table could be derived from the atm files:
http://www.nsl.com/k/pdf/afm/

from u8g2.