[gs-devel] PS2Jpeg in Landscape xefitra

[Peter Carlson]

ok...I found I had to add /slide to /.pagetypenames now I dont get 
unknown paper size
but still no rotated jpegs
either with -r120x100 (~landscape dimensions)
or with no -r param

Peter

Peter Carlson wrote:
> Ray,
>
> Thanks for the pointers.  I dont want to completely limit it.  What 
> I'd like to do is something like:
> gs -ORIENT=Lansdcape
> I can write a pre-processor that looks at the .ps file and if it finds 
> %%ORIENTATION landscape calls gs with a certain param.
> I am playing with -sPAPERSIZE
> In gs_statd.ps I added this line after /letter
> /slide {792 612 //.setpagesize exec} bind def
> the I did
> gswin32c -sDEVICE=jpeg -sPAPERSIZE=slide -sOutputFile=peter%d.jpg 
> output.ps
>
> Now I get an error "unknown paper size" (slide)
>
> Peter
> PS.  Sorry for the direct reply (last email)
>
> Ray Johnston wrote:
>> Hi Peter,
>>
>> The '-dAutoRotatePages' option is only relevant to the 'pdfwrite' 
>> device (it
>> is described in Ps2pdf.htm). This is an Adobe distillerparam 
>> parameter and
>> is ignored by Ghostscript in general.
>>
>> Ghostscript follows the PLRM (Adobe's PostScript Language Reference 
>> Manual
>>  3rd edition), and the only 'suto-rotation' is provided by the 
>> 'setpagedevice'
>> implementation which will rotate _IF NEEDED_ to find a match between the
>> requested PageSize and those available in the various 'slots' in the
>> 'InputAttributes' dictionary.
>>
>> Ghostscript implements an extended form of the 'setpagedevice' 
>> InputAttributes
>> parameters to support variable page sizes. This is set up in the 
>> lib/gs_setpd.ps
>> file with the entry:
>>
>>       mark /PageSize [0 dup 16#7ffff dup] .dicttomark
>>
>> which allows support of page widths and lengths up to 524287 points 
>> (up to
>> 29127 inches). This is done intentionally to allow 'raster' format 
>> devices
>> to accept arbitrary page sizes/shapes.
>>
>> Ghostscript also populates the InputAttributes dictionary with a 
>> LARGE variety
>> of page sizes. This is done in lib/gs_setpd.ps by:
>>
>>     statusdict /.pagetypenames get {
>>       counttomark 1 sub 2 idiv exch mark exch /PageSize exch
>>       % stack: mark --dict-- --dict-- ... key mark /PageSize pagetypename
>>       % see note above about pagetype executable array contents.
>>       load dup 0 get exch 1 get 2 array astore .dicttomark
>>     } forall
>>
>> If you want to support only a single page size, then remove or 
>> comment out
>> this latter section of PostScript code.
>>
>> Then if all you have is a 'letter' size, and the request comes in for
>> PageSize [792 612] (landscape) Ghostscript will rotate.
>>
>> If you wish to support a range of lengths, but limited width, then change
>> the 'range' to specify the maximum width and length you wish to support
>> (values in points == 1/72 inch). For example to support up to 8.5 
>> inches wide
>> and 24 inch long faxes, use:
>>
>>     mark /PageSize [ 0 0 612 1728 ] .dicttomark
>>
>> To support only up to 'legal' length (14 inches) use:
>>
>>     mark /PageSize [ 0 0 612 1008 ] .dicttomark
>>
>> When Ghostscript gets a request for a page size that is wider than 
>> the 612
>> points (8.5 inches) it will rotate it automatically, setting the 
>> length of
>> the TIFF image to the requested width.
>>
>> Note that Ghostscript (or any conforming PostScript setpagedevice 
>> implementation)
>> will also perform scaling of the page to 'best fit' and 'center' as 
>> described
>> in the 'Policies' section of Adobe's PLRM.
>>
>> Regards,
>> Ray Johnston
>> ------------------------------------------------------------------------
>>
>> Peter Carlson wrote:
>>> I am using apple laserwriter print driver on windows to print a 
>>> powerpoint presentation (slides) to a file.
>>> then I run gswin32c like this:
>>> c:"\program files\gs\gs8.62\bin"\gswin32c -sDEVICE=jpeg -dNOPAUSE 
>>> -dBATCH -dSAFER -dAutoRotatePages=/All -r100 
>>> -sOutputFile=peter%d.jpg output.ps
>>> or
>>> c:"\program files\gs\gs8.62\bin"\gswin32c -sDEVICE=jpeg -dNOPAUSE 
>>> -dBATCH -dSAFER -dNORANGEPAGESIZE -sPAPERSIZE=letter -r100 
>>> -sOutputFile=peter%d.jpg output.ps
>>> However the resulting jpegs are in portrait mode not landscape.
>>> 1.  Why isn't %%Orientation being used?
>>> 2.  How can I use gs to rotate?
>>>
>>> -----part of output.ps
>>> %-12345X at PJL JOB NAME = "Microsoft PowerPoint - Test Presentation.ppt"
>>> @PJL JOB
>>> @PJL ENTER LANGUAGE = POSTSCRIPT
>>> %!PS-Adobe-3.0
>>> %%Title: Microsoft PowerPoint - Test Presentation.ppt
>>> %%Creator: PScript5.dll Version 5.2.2
>>> %%CreationDate: 4/25/2008 17:21:45
>>> %%For: peter
>>> %%BoundingBox: (atend)
>>> %%Pages: (atend)
>>> %%Orientation: Landscape
>>> %%PageOrder: Special
>>> %%DocumentNeededResources: (atend)
>>> %%DocumentSuppliedResources: (atend)
>>> %%DocumentData: Clean7Bit
>>> %%TargetDevice: (Xerox Phaser 1235) (3011.103) 1
>>> %%LanguageLevel: 3
>>> %%EndComments
>>>
>>> %%BeginDefaults
>>> %%PageBoundingBox: 16 16 595 775
>>> %%ViewingOrientation: 0 -1 1 0
>>> %%EndDefaults
>>>
>>> Peter
>>> _______________________________________________
>>> gs-devel mailing list
>>> gs-devel at ghostscript.com
>>> http://www.ghostscript.com/mailman/listinfo/gs-devel
>>>
>>
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