Re: [Groff] Unwanted margins in gpresent pdf

[Miklos Somogyi]

Tom,

I've never used gpresent but I suspect that your .pdf file comes from a 
conversion from a .ps file.
If so, the solution could be to define a cropbox somewhere in the .ps 
file, e.g.

      [/CropBox [80 50 520 800] /PAGES pdfmark

that sets the cropbox for all pages for the .pdf file, or

      [/CropBox [50 50 500 700] /PAGE pdfmark

that sets the cropbox for the current page only.
These numbers are [x-left y-bottom x-right y-top] in `Adobe points' (72 
per inch).

Note: Most pdf viewers will crop the page to the given size (Acrobat, 
Preview), but
some will just ignore it.

Note: Some ps interpreters do not understand pdfmark. The following
will define it for them as `do nothing', so that you don't get error 
messages:

       /pdfmark where { pop } { userdict /pdfmark /cleartomark load put 
} ifelse

If you crop all pages the same all the time, you may add [/Crop... and 
/pdfmark ...
to grops' prologue, and you are on your way.
If you wish to crop differently, you may need to learn how to insert PS 
code into a groff
document and do the [/CropBox ... bit page-by-page.

I hope that this helps.

Miklos


On 18/12/2006, at 5:30 AM, Tom Wolfe wrote:

> Hello,
>
> I'm new to groff. I worked as a typesetter back in the late 70s and
> groff seems a more natural way to create documents than MS or LaTeX.
> I'm a college teacher, so naturally one of the first things I want to
> do is replace Powerpoint. I've been experimenting with gpresent. It
> seems like an ideal answer. However, after processing the demo my pdf
> file  has white margins around the page. It is especiallly noticeable
> aoround the pages with color backgrounds and the sidebar format. I've
> spent what I feel is a reasonable amount of time with many man and
> info pages but can't solve this problem. Anyone willing to help? I''m
> using Mac OS X, 10.4.8.
>
> Tom
>
>
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