[cairo] OpenType font variations and cairo

[Matthias Clasen]

On Tue, Sep 19, 2017 at 7:04 AM, Adrian Johnson <ajohnson at redneon.com>
wrote:

>
> On 18/09/17 01:03, Matthias Clasen wrote:
> > On Sun, Sep 17, 2017 at 1:12 AM, Adrian Johnson <ajohnson at redneon.com
> > <mailto:ajohnson at redneon.com>> wrote:
> >     I've attached a patch that refactors the float parsing code from
> >     cff-subset into a new function: _cairo_strtod(). So you can now use
> this
> >     for a C locale strtod.
> >
> >
> > Yay, thanks.It might still be nice to apply the strtod_l patch on top,
> > and only use that code as fallback.
>
> -1. Just use the cairo_strtod all the time. We don't use non ANSI C
> functions with #include guarded fallbacks in cairo. It adds to source
> code bloat and one side of the #if won't get regularly tested.
>
>
I disagree, at least in this case, but your call.


>
> I'm getting a test failure running font-variations. The test log is:
>
> axis Weight, value 19660800
> axis CNTR, value 0
> Axis Weight: not expected value (19660800 != 13107200)
>
> I have tried both the otf and ttf version of the Adobe Variable Font
> Prototype v1.003. Same result for both.
>
> I'm not sure what I'm doing wrong. Could the test be sensitive to my
> fontconfig configuration? I am using Debian Stretch.


It sounds unlikely to me. Maybe Behdads fontconfig patches interfere here?
I've written the test on a system without them.


> In font-variations.c, FT_Get_Var_Design_Coordinates() will need an
> #include guard for FreeType >= 2.8.
>
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