[cairo] Locking font / pen space

[Behdad Esfahbod]

On 08/27/10 16:37, Bill Spitzak wrote:
> 
> If this is a "mode" it means a lot of other api can switch behavior and
> this would avoid a lot of incompatibility problems or tricky emulation.
> In this mode dash patterns are in "pen space", and font metrics returned
> in "font space". Glyph positions would also be given in "font space",
> relative to either 0,0 or the current point in the CTM.

What do you mean?  How is the font metrics and glyph positions currently
different from what you are suggesting?