Re: [Gimp-user] Programmatically modifying text in .xcf files.

2007-07-26 Thread Simon Budig
John R. Culleton ([EMAIL PROTECTED]) wrote:
 On Thursday 26 July 2007, mal content wrote:
  Is there a tool or method available
  to safely and reliably modify this text (replace it with
  other text) from the shell, or some other interface that
  doesn't require me to open 100 or so files in Gimp*?
 
 If you are on a Linux or similar platform something along the lines of 
 awk or sed could be  possible approaches.

You would end up with invalid xcf files. Even if you could replace the
text without damaging the file structure your image still would look the
same, since even text layers are stored as pixels. The text you find in
the xcf file is metainformation that would get used if you'd change the
text in the gimp and thus would force gimp to re-render the text layer.

So basically the only tool being able to effectively change the text is
the Gimp itself. And - as Sven mentioned - since we unfortunately do not
have a PDB API for this functionality it is impossible to create a
script to let gimp do this.

Bye,
Simon
-- 
  [EMAIL PROTECTED]  http://simon.budig.de/
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Re: [Gimp-user] Programmatically modifying text in .xcf files.

2007-07-26 Thread Sven Neumann
Hi,

On Thu, 2007-07-26 at 19:11 +0100, mal content wrote:

 I have a large number of xcf files that have a section of
 text embedded in them. Is there a tool or method available
 to safely and reliably modify this text (replace it with
 other text) from the shell, or some other interface that
 doesn't require me to open 100 or so files in Gimp*?

We are still lacking a proper PDB API for text layer and without this
you can't do what you are asking for. Hopefully someone will contribute
this missing part at some point.


Sven


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Re: [Gimp-user] Programmatically modifying text in .xcf files.

2007-07-26 Thread Bruce Bertrand
On Thu, 2007-07-26 at 21:03 +0100, mal content wrote:
 On 26/07/07, John R. Culleton [EMAIL PROTECTED] wrote:
 
  Don't know :( I thought you meant a sentence or two.  Gimp is not the
  optimum approach for long text passages IMO.  Sounds more like a job
  for a page layout program or even html. What kind of files are they?
  Are they intended for online use?
 
 
 Well what it basically is, is a CD cover and booklet. The
 cover and booklet conform to an image template so that they
 print the correct size and with correct margins at a given
 DPI.
 
 The covers are being produced for a range of CDs (the layout
 is the same on each disks but the images are different).
 The first page of every booklet lists credits and other
 information and these now have to be changed en masse as
 the text has been rewritten.
 
 I suppose I could export the covers to a page layout program
 but that would take a lot of work and would complicate our
 release process quite a bit.
 
 I'm not averse to the idea of writing a program to make
 these transformations in C, but I'm not aware of the
 existence of a 'libxcf' or equivalent to access the file
 format and I really don't want to have to do my own
 parsing!
 
 cheers,
 MC

You should check out Swiss File Knife.
It's a sed-like program that works on binaries as well as text.
Just be sure to back up your original data.

http://sourceforge.net/projects/swissfileknife

~B

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Re: [Gimp-user] Programmatically modifying text in .xcf files.

2007-07-26 Thread mal content
On 26/07/07, John R. Culleton [EMAIL PROTECTED] wrote:
 If you are on a Linux or similar platform something along the lines of
 awk or sed could be  possible approaches.  I quote from an old
 manual:
 The advantages of sed are that it can apply the same editing comands
 to many files; it can edit a large file quickly; and it can readily
 be used with pipes.

Yes, the thing I was worried about though is damaging the
binary files. The text I wish to replace the original text
with is about twice the length of the original. Is the
xcf file format flexible enough to really allow editing
in this way?

thanks,
MC
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Re: [Gimp-user] Programmatically modifying text in .xcf files.

2007-07-26 Thread John R. Culleton
On Thursday 26 July 2007, mal content wrote:
 Hello.

 I have a large number of xcf files that have a section of
 text embedded in them. Is there a tool or method available
 to safely and reliably modify this text (replace it with
 other text) from the shell, or some other interface that
 doesn't require me to open 100 or so files in Gimp*?

 I'd ideally like to be able to do something along the lines
 of:

   $ for f in *.xcf; do xcf_text_replace $layer_num file.txt; done

 thanks,
 MC

 * they are huge files, I doubt my hardware could cope.
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If you are on a Linux or similar platform something along the lines of 
awk or sed could be  possible approaches.  I quote from an old 
manual:
The advantages of sed are that it can apply the same editing comands 
to many files; it can edit a large file quickly; and it can readily 
be used with pipes.

-- 
John Culleton
Able Indexing and Typesetting
Precision typesetting (tm) at reasonable cost.
Satisfaction guaranteed. 
http://wexfordpress.com

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Re: [Gimp-user] Programmatically modifying text in .xcf files.

2007-07-26 Thread John R. Culleton
On Thursday 26 July 2007, mal content wrote:
 On 26/07/07, John R. Culleton [EMAIL PROTECTED] wrote:
  Don't know :( I thought you meant a sentence or two.  Gimp is
  not the optimum approach for long text passages IMO.  Sounds more
  like a job for a page layout program or even html. What kind of
  files are they? Are they intended for online use?

 Well what it basically is, is a CD cover and booklet. The
 cover and booklet conform to an image template so that they
 print the correct size and with correct margins at a given
 DPI.

I suggest that the cover art is a good Gimp application but the 
booklets aren't. An application such as  TeX (e.g, Context) could 
prepare those pages.  If art work or backgrounds etc. were needed 
they could be prepared via Gimp or a drawing program and incorporated 
as needed on the pages. But gimp would not be used to create the 
final image to go to the printer.  That way you would have the 
flexibiilty to substitute text in a batch  editor program like sed 
and have the pages adjust automatically.   Margins are easily 
controlled in a layout program and dpi is not really a factor with 
text. 

I am afraid that you may have painted yourself into a corner by using 
gimp as a page layout program.  That is not its strength.   If you 
send me a sample of one of the bookets I will see what I can do with 
a conversion program. 

-- 
John Culleton



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Re: [Gimp-user] Programmatically modifying text in .xcf files.

2007-07-26 Thread mal content
On 26/07/07, John R. Culleton [EMAIL PROTECTED] wrote:

 Don't know :( I thought you meant a sentence or two.  Gimp is not the
 optimum approach for long text passages IMO.  Sounds more like a job
 for a page layout program or even html. What kind of files are they?
 Are they intended for online use?


Well what it basically is, is a CD cover and booklet. The
cover and booklet conform to an image template so that they
print the correct size and with correct margins at a given
DPI.

The covers are being produced for a range of CDs (the layout
is the same on each disks but the images are different).
The first page of every booklet lists credits and other
information and these now have to be changed en masse as
the text has been rewritten.

I suppose I could export the covers to a page layout program
but that would take a lot of work and would complicate our
release process quite a bit.

I'm not averse to the idea of writing a program to make
these transformations in C, but I'm not aware of the
existence of a 'libxcf' or equivalent to access the file
format and I really don't want to have to do my own
parsing!

cheers,
MC
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Re: [Gimp-user] Programmatically modifying text in .xcf files.

2007-07-26 Thread John R. Culleton
On Thursday 26 July 2007, mal content wrote:
 On 26/07/07, John R. Culleton [EMAIL PROTECTED] wrote:
  If you are on a Linux or similar platform something along the
  lines of awk or sed could be  possible approaches.  I quote from
  an old manual:
  The advantages of sed are that it can apply the same editing
  comands to many files; it can edit a large file quickly; and it
  can readily be used with pipes.

 Yes, the thing I was worried about though is damaging the
 binary files. The text I wish to replace the original text
 with is about twice the length of the original. Is the
 xcf file format flexible enough to really allow editing
 in this way?

 thanks,
 MC

Don't know :( I thought you meant a sentence or two.  Gimp is not the 
optimum approach for long text passages IMO.  Sounds more like a job 
for a page layout program or even html. What kind of files are they? 
Are they intended for online use?  


-- 
John Culleton
ATTN Publishers/authors:
If you don't read you don't succeed.
Free short list of publishing/marketing books. 
http://wexfordpress.com/tex/shortlist.pdf


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