[pygtk] Pango measures font sizes weirdly

[Greg Ewing]

Pango seems to have a creative notion of what the point
size of a font means.

On most systems, the size of a font is taken to be the
total height, including ascent and descent. However,
Pango seems to think it means the ascent only.

For example, using Cocoa on MacOSX, if I ask for
48 point Times Roman I get a font with ascent = 36,
descent = 12.

But using Pango I get ascent = 48, descent = 16.

This is very inconvenient for PyGUI, because it makes
it difficult to write text-rendering code that produces
consistent results across platforms.

Anyone have any idea what I can do about this?

-- 
Greg