[mythtv] Ongoing support for NZ MHEG-5 profile

[David Matthews]

Steven Ellis wrote:
> In general the MHEG support works really well, but it appears that the
> local MHEG-5 based EPG has done a new code release and now makes use of
> DrawPolygon which is currently unimplemented. I've included some log
> output below.
> 
> Doesn't look like these are particularly large polygons.
> 
> Now I'm wondering if there is some particularly smart way to do this
> with QT.

I seem to recall trying to do some of this with Qt but ran into 
problems.  The difficulty was that QPainter (which does have a 
drawPolygon method) uses X-Windows underneath and because the MHEG code 
is running on a different thread than the display code things went badly 
wrong.  Maybe someone has some code to draw a polygon directly to a 
QImage.  It shouldn't be hard.

David.