Pango Cairo font resolution: shouldn't be specified for both horizontal and vertical?

[Ivan Baldo <ibaldo adinet com uy>]

   Hello.
   I am drawing text on a Cairo context with the help of Pang Cairo.
   If I use a font with 72 points then an M should be aproximately one 
inch tall (I guess, maybe I am wrong), for this, I get the resolution of 
my monitor and I tell that to Pango, so I got my expected result.
   Luckily my monitor has square pixels, so I have 81 dpi both 
horizontally and vertically.
   But now I wonder: ¿what happens on a non square pixel monitor or on 
a printer?
   My guess is that the fonts would look distorted because the diferent 
resolutions aren't taken into account by Pango.
   I looked in the documentation and header files and I didn't found a 
function to specify the resolution separately for vertical and horizontal.
   I am a bit lost now, so I appreciate if someone can iluminate my 
route to salvation :).
   Thanks for sharing your knowledge!


P.s.: GNOME seems to be using 96 DPI by default although my monitor 
correctly reports 81 dpi to X _and_ to GTK, so actually my fonts aren't 
the size they should be in the real physical world, but I will not bug 
about this until I get more knowledge about fonts, etc..., also, it 
doesn't have the possibility to specify diferent resolutions for 
horizontal and vertical... I wonder how fonts would look in a non square 
pixel monitor though I think those monitors are hard to find today...


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