Is font face reference counting broken?

[Uli Schlachter]

Hi,

Am 15.05.24 um 16:22 schrieb Andreas Falkenhahn:
> Thanks, then the behaviour makes sense.
> 
> Is there any way to flush Cairo's font cache?

There is only cairo_debug_reset_static_data(), but that can only be 
called if no objects are alive anymore.

So no, there is no way to flush the font cache.

> I'm using a font saved to a temp file and I can't delete that temp file as long as it's still in use (Windows behaviour). So I'd really need to find a way to make Cairo release the hold onto the file so that I can delete the temp file.
[...]

Why not the user way around?

You can use cairo_font_face_set_user_data() to register a callback for 
when the font face is destroyed. Then, in that callback you can delete 
the temporary file.

Also, I am not an expert in font stuff, but why do you need a temporary 
file? Where is the font file coming from and is there perhaps a way to 
load it directly from memory?

In your example program, you seem to be using fontconfig only for "load 
this file". I am still no font expert, but I would guess it is somehow 
possible to make freetype load a font from memory...?

Cheers,
Uli

-- 
Homophobia - The fear that another man will treat you the way you treat 
women.