Re: fonts for pango

[Alexander Larsson <alla lysator liu se>]

On 19 Mar 2001, Sven Neumann wrote:

> Hi,
>
> Cristian Prevedello <plasma prosa it> writes:
>
> > if i run a gtk example i get the following message:
> >
> > Gdk-ERROR **: file gdkfont-fb.c: line 148 (gdk_font_from_description):
> > assertion failed: ((font->ascent > 0) || (font->descent > 0))
>
> The GTK+ example you are running uses deprecated GTK+ function that
> rely on GDK fonts (which are essentially X fonts). The linux-fb backend
> tries to emulate this. Your problem could be related to the following
> two lines from gdkfont-fb.c which don't look correct to me:
>
>   lang = pango_context_get_lang (context);
>   pango_font_get_metrics (pango_font, "fr", &metrics);
>
> Not only does it use a hardcoded language, it also leaks the result
> from pango_context_get_lang().

Oh yes. That does look strange. I have a vague recollection that this was
due to some pango unstabilities when passing NULL languages.

/ Alex