[cairo] Poor man's dummy surfaces

[Behdad Esfahbod]

Hey egyptians,

So, in lack of better "dummy" surfaces for measurement purposes, I want
to make sure the following idioms succeed:

  cairo_image_surface_create (*, 0, 0);
  cairo_image_surface_create_for_data (NULL, *, 0, 0, 0);

  cairo_{ps,pdf,svg}_surface_create (NULL, *, *);
  cairo_{ps,pdf,svg}_surface_create_for_stream (NULL, *, *, *);

  cairo_xlib_surface_create (??, *, ??, *, *);

The idea is to be able to get surfaces as near as to your destination
surface (font options, etc), yet not have to allocate resources outside
cairo, or cleanup after.

Am I crazy?  And how should the xlib one work?

-- 
behdad
http://behdad.org/

"Those who would give up Essential Liberty to purchase a little
 Temporary Safety, deserve neither Liberty nor Safety."
        -- Benjamin Franklin, 1759