[cups.development] Filters and rotation

[Jon Peatfield]

On Thu, 31 Mar 2011, Helge Blischke wrote:

....
>> Thus, any PostScript interpreting code needs to be able to handle doing
>> landscape rotation when they see the page size is the wrong orientation.
> As of the PLRM, 2nd ed., a PostScript interpreter conforming to language
> level 2 *must* be capable of doing this transformation (section 4.11, page
> 233).
> But I admit that level 1 PostScript - which CUPS still claims to support -
> is an other thing.
....

Hmm, of course pdftops must be generating different code for level-1 
printers since there is no setpagedevice operator.

I wonder therefore if the PPD's languagelevel will also affect wehther the 
rotation works or not since level-1 printers only have device-specific 
ways to handle the media sizes...

I've not seen a level-1 printer for many years but I wonder if some of the 
raster-only devices may have PPDs which have a low languagelevel in the 
belief that it will be easier to convert from that to the raster format...

  -- Jon