I found how to make it work with \switchtobodyfont, I was
missing \definebodyfontenvironment for the sizes. And I had (obviously) to
update the \definebodyfont with the correct sizes.

But still, \tfxx and so do not switch to correct font.

Thanks,

Antoine

On 9 May 2016 at 11:23, Antoine Cailliau <antoinecailliau@gmail.com> wrote:

> Hi,
>
> I'm continuing my quest for supporting Minion Pro font in my document.
>
> I defined the different sizes, as shown on contextgarden. But apparently,
> it does not (fully) work.
>
> The problems are :
> - When using \tfxx, \tfx, ... Regular font is always used, there is no
> switch to appropriate font.
> - When using \switchtobodyfont, switches are correct up to 12pt. After
> that, it fallback on xits-mathbold
>
> Any help is welcome :-)
>
> The compiled file :
> https://drive.google.com/file/d/0Bwo7pPA5_WkDdlNLbHdkMjg2dkU/view?usp=sharing
>
> The source:
>
> \definefontalternative[me]
> ...
>
> \starttypescript [serif] [optical] [size]
>
>   % design size 8 pt, size range (6 pt, 8.4 pt]
>   \definebodyfont [4pt,5pt,6pt,7pt,8pt] [rm]
>     [tf=SerifCaption                 sa 1,
>      it=SerifCaptionItalic           sa 1,
>      me=SerifCaptionMedium           sa 1,
>      mi=SerifCaptionMediumItalic     sa 1,
>      se=SerifCaptionSemiBold         sa 1,
>      si=SerifCaptionSemiBoldItalic   sa 1,
>      bf=SerifCaptionBold             sa 1,
>      bi=SerifCaptionBoldItalic       sa 1]
>
>   % design size 11 pt, size range (8.4 pt, 13 pt]
>   \definebodyfont [9pt,10pt,11pt,12pt] [rm]
>     [tf=SerifRegular                 sa 1,
>      it=SerifRegularItalic           sa 1,
>      me=SerifRegularMedium           sa 1,
>      mi=SerifRegularMediumItalic     sa 1,
>      se=SerifRegularSemiBold         sa 1,
>      si=SerifRegularSemiBoldItalic   sa 1,
>      bf=SerifRegularBold             sa 1,
>      bi=SerifRegularBoldItalic       sa 1]
>
>   % design size 19 pt, size range (13 pt, 19.9 pt]
>   \definebodyfont [14.4pt,17.3pt] [rm]
>     [tf=SerifSubhead                 sa 1,
>      it=SerifSubheadItalic           sa 1,
>      me=SerifSubheadMedium           sa 1,
>      mi=SerifSubheadMediumItalic     sa 1,
>      se=SerifSubheadSemiBold         sa 1,
>      si=SerifSubheadSemiBoldItalic   sa 1,
>      bf=SerifSubheadBold             sa 1,
>      bi=SerifSubheadBoldItalic       sa 1]
>
>   % design size 72 pt, size range (19.9 pt, 72 pt]
>   \definebodyfont [20.7pt] [rm]
>     [tf=SerifDisplay                 sa 1,
>      it=SerifDisplayItalic           sa 1,
>      me=SerifDisplayMedium           sa 1,
>      mi=SerifDisplayMediumItalic     sa 1,
>      se=SerifDisplaySemiBold         sa 1,
>      si=SerifDisplaySemiBoldItalic   sa 1,
>      bf=SerifDisplayBold             sa 1,
>      bi=SerifDisplayBoldItalic       sa 1]
>
> \stoptypescript
>
> \starttypescript [serif] [minionpro]
>     \definefontsynonym [SerifRegular]
>  [file:MinionPro-Regular.otf]      [features=default]
>     ...
> \stoptypescript
>
> \definetypeface [source] [rm] [serif] [minionpro] [optical]
> \definetypeface [source] [mm] [math]  [xits]      [default]
>
> \setupbodyfont[source, 11pt]
>
> \starttext
>
> ...
>
> \page
>
> {\tfxx \purefontname\font: \input ward \blank}
> {\tfx \purefontname\font: \input ward \blank}
> {\tf \purefontname\font: \input ward \blank}
> {\tfa \purefontname\font: \input ward \blank}
> {\tfb \purefontname\font: \input ward \blank}
> {\tfc \purefontname\font: \input ward \blank}
> {\tfd \purefontname\font: \input ward \blank}
>
> \page
>
> \dostepwiserecurse {6} {22} {1}
>   {\switchtobodyfont[#1pt]
>    \purefontname\font: \input ward
>    \blank}
>
> \stoptext
>