CUPS determine page orientation

[Helge Blischke]

kaede wrote:

>> kaede wrote:
>>
>> > Hi all,
>> >
>> > I am trying to write a pre-filter to insert heading & footing to the
>> > postscript file.
>> >
>> > How do I determine whether the page is landscape or portrait?
>> >
>> > Thanks,
>> > Kaedekai
>>
>> Run it through a PostScript interpreter (e. g. Ghostscript) prepended
>> with a PostScript routine which interprets the CTM and how it changes to
>> determine the orientation.
>> Note: the "%%Orientation: ..." and related comments seem not always to be
>> reliable.
>>
>> Helge
>>
> 
> Hi Helge,
> 
> I am fairly new to Setting up CUPS.  What is a CTM?  Do you know of  a
> rountine that can currently do that?
> 
> I am trying to insert heading & footing. Currently, I use a perl script
> that uses hard coded value to moveto to show the text.  I would like to
> avoid the hardcode value, and a way to determine the orientation.
> 
> When printing via firefox, there %%orientation tag is not present.
> 
> Thanks,
> Kaede

Well, the CTM is the "Current Transformation Matrix" which describes the 
current transformation of the logical coordinate system to the device 
coordinate system.

I do not have a PostScript routine out of the box to accomplish what you 
want - it is not an easy task to develop one.

Helge