[ft] Font Metrics

[Martin Olbrich]

Hello,

can noone help me with the font metrics?

martin.


I wrote:

> Hi,
>
> I am a bit confused about the number and scaling of different font metrics.
>
> For my program I am searching for the maximum distance above/under the 
> baseline of a given font in the scaling of the pixels after rendering. I 
> have tried it with "Face.bbox.yMin / yMax", but I dont know about the 
> right scaling to get it to pixel units.
> Do I need the "Face.units_per_EM" for that?
>
> The other metric I need is the width of the string. I calculated it as 
> the sum over "Face.glyph.advance.x/64" of all glyphs. ( with 
> "FT_Set_Char_Size(face, fontSize*64., fontSize*64., 100, 100);" )
> Is that the correct value?
>
> Thank you for any help.
> martin.
>
>
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