Re: patch: handle PS/PDF in Gnus

[Jan Djärv]

David Kastrup skrev:
> Jan Djärv <address@hidden> writes:
>
>
> > For Gtk+ we can use the GtkPrintDialog, but it requires Gtk+ 2.10 or
> > newer.  It is a bit involved as it needs Emacs to render the data to
> > be printed with cairo.
>
> Is cairo a possible road into bidirectional rendering, or does it not
> actually involve the screen?

I don't really know, but I think it is possible.

Cairo draws to different backends, called surfaces. X11 is one surface, others 
are PNG, PDF, PostScript, W32, Quartz, OpenGL, SVG.  So depending on the 
surface you draw to, it may involve a screen.  The printing dialog returns a 
suitable surface for the selected printer, and the application is supposed to 
render into that surface.

        Jan D.