[cairo] Re-working cairo_current_path

[Kristian Høgsberg]

Keith Packard wrote:
> Around 13 o'clock on Jan 24, =?UTF-8?B?S3Jpc3RpYW4gSMO4Z3NiZXJn?= wrote:
> 
> 
>>What about:
> 
> 
> Are you proposing that we not have a simple array of these then?  That 
> seems really funky to me for a public API.

The idea was that you'd have the path elements or varying size 
continously laid out in memory.  To get from path element p, you'd do

	p = (cairo_path_element_t *) ( (char) p + p->length )

with

	p->length = offsetof (p, u) + sizeof (u.move_to)

for move_to ops etc.

Either I didn't understand your first proposal, or it's just as funky. 
Using doubles for an enumeration value certainly seems unfortunate.

cheers,
Kristian