[cairo] Sign of cairo_font_extents->descent

Owen Taylor otaylor at redhat.com
Mon May 2 14:29:10 PDT 2005


On Mon, 2005-05-02 at 16:45 -0400, Carl Worth wrote:
> On Fri, 29 Apr 2005 12:34:44 -0400, Owen Taylor wrote:
> > I just discovered that the FreeType and Win32 font backends don't agree
> > on the sign of cairo_font_extents->descent.
> 
> Ouch!
> 
> >  FreeType backend: a font that descends below the baseline has  a 
> >    negative descent
> > 
> >    (Like in the FreeType API)
> > 
> >  Win32 backend: a font that descends below the baseline as a 
> >    positive descent
> > 
> >    (Like Xft, Pango, Windows, ATSUI APIs)
> > 
> > I'd suggest we change the FreeType backend.
> 
> I have no intrinsic authority on which to base an opinion here. I
> would defer to consensus among well-established text APIs, and I think
> you've demonstrated that quite clearly that that lies in favor of the
> change.
> 
> So I won't stand in the way of this one.

Changed.
						Owen

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