[reportlab-users] Font re-registration annoyance

[Robin Becker]

Dinu Gherman wrote:

> Hi!

> 

> I have some code which might try to register a TrueType font

> multiple times. It's more convenient like this, although my code

> could be smarter an avoid registering the font more than once.

> 

> Without that smarts I get the traceback below for the attached

> code snippet, which does surprises me a bit. While I can change

> my own code to handle this, I might not be able to change code

> from others that uses fonts inside external Platypus flowables.

> 

> Therefore, I think that detecting the re-registration of a font

> might be something to be moved / developed into the RL code base

> itself.

> 

.......

you're probably right. The TTF code does it's own internal sub-setting with the 
internal name of the font as part of the subset name. Using the same font 
multiple times causes problems because we don't have a cache for those fonts.

I guess that TTFont itself could do that and avoid rereading all the data  etc 
etc. Probably we need to allow some kind of family information to be used so 
linked fonts could find each other. Sounds like reinventing the wheel all over 
again.
-- 
Robin Becker