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- NAME
-
- Gimp - Perl extension for writing Gimp Extensions/Plug-ins/Load &
- Save-Handlers
-
- SYNOPSIS
-
- my $img = new Image (600, 300, RGB);
- my $bg = $img->layer_new(600,300,RGB_IMAGE,"Background",100,NORMAL_MODE);
- $img->add_layer($bg, 1);
- $img->edit_fill($bg);
- $img->display_new;
-
- A complete & documented example script can be found at the end of
- this document (search for EXAMPLE).
-
- DOCUMENTATION
-
- The Manpages in html format, the newest version, links and more
- information can be found on the gimp-perl homepage, where you
- should get an overview over the gimp-perl extension:
-
- http://gimp.pages.de/
- -or-
- http://www.goof.com/pcg/marc/gimp.html
-
- PREREQUISITES
-
- To install/use this perl extension, you need to have the following
- software packages installed (the given order is best):
-
- Perl5.004 (or higher):
-
- While this extension should run fine with older versions (it has
- been tested with 5.004_04), I work with Perl5.005 or higher,
- which has much more bugs fixed than the old 5.004.
-
- When in doubt, upgrade.
-
- GTK+, the X11 toolkit:
- http://www.gtk.org/
- ftp://ftp.gimp.org/pub/gtk/
-
- gtk+-1.2 or higher is recommended, but older versions mostly
- work (some features not implemented in gtk+-1.0 do not work
- properly, of course).
-
- Gtk, the perl extension for the above:
- ftp://ftp.gimp.org/pub/gtk/perl/
-
- Gtk-0.6123 (or higher) is recommended. You might encounter some
- problems compiling it for Perl5.004 (or any version), in that
- case you might want to try the updated gnome-perl version on the
- gnome-cvs-server. See the the gimp-perl pages for more info.
-
- The GNU Image Manipulation Program, i.e. The GIMP:
- http://www.gimp.org/
- ftp://ftp.gimp.org/pub/gimp/
-
- gimp-1.1 (or newer, e.g. CVS or CVS snapshots) is recommended
- for full functionality, but any version since 1.0.2 should do,
- some features not implemented in 1.0 don't work, though.
-
- PDL, the Perl Data Language
- http://www.cpan.org/
-
- Optionally, you can install the PDL module to be able to
- manipulate pixel data (or to be able to run the example plug-ins
- that do pixel manipulation). PDL is available at any CPAN
- mirror, version 1.9906 or higher is recommended. Without PDL,
- some plug-ins do not work, and accessing raw image data is
- impossible.
-
- INSTALLATION
-
- On unix, you should be able to run "perl Makefile.PL" make, make
- test && make install. To get a listing of configuration options,
- enter
-
- perl ./Makefile.PL --help
-
- a straight "perl Makefile.PL" should do the job on most systems,
- but watch out for warnings. If everything went fine, enter "make",
- "make test", "make install".
-
- After installation, these perl plug-ins should be visible from
- within the Gimp (and many, many more):
-
- <Toolbox>/Xtns/Perl Control Center
- <Toolbox>/Xtns/Perl-Server
- <Image>/Filters/Artistic/Windify
- <Image>/Filters/Misc/Prepare for GIF
- <Image>/Filters/Misc/Webify
-
- If you don't have unix, you can install linux instead
- (http://www.linux.org/)
-
- OVERWRITING INSTALL LOCATIONS (PREFIX)
-
- In the rare case that you want to install the Gimp-Perl modules
- somewhere else than in the standard location then there is a
- standard way to accomplish this.
-
- Usually, you can just use the PREFIX=/path option to the
- Makefile.PL, or the other common solution of adding the INST* path
- definitions onto the "make install" commandline.
-
- These options are described in the "perldoc ExtUtils::MakeMaker"
- manpage.
-
- If you are configuring the gimp-pelr module that comes with the
- Gimp sourcetree this won't work. In that case you can set the
- environment variable:
-
- PERL_MM_OPT='whatever options you want to pass to MakeMaker'
-
- before running configure. The arguments that you put into that
- variable will be passed to the Makefile.PL as if given on the
- commandline.
-
- If you are building a slp/deb/rpm/whatever package you usually want
- to use the normal prefix, while overwriting the prefix at "make
- install" time. In that case, just build gimp-perl (or the whole
- gimp) as usual, but instead of just calling "make install", use
- something like the following command (this example is for debian):
-
- make prefix=`pwd`/debian/tmp/usr PREFIX=`pwd`/debian/tmp/usr \
- install
-
- The lowercase prefix is used by the Gimp, the uppercase PREFIX is
- used by perl. Rarely you also want to specifiy manpage directories
- etc.. you can also overwrite these (see "man ExtUtils::MakeMaker")
- as well, e.g. for debian:
-
- make prefix=`pwd`/debian/tmp/usr PREFIX=`pwd`/debian/tmp/usr \
- INSTALLMAN1DIR=`pwd`/debian/tmp/usr/man/man1 \
- INSTALLMAN3DIR=`pwd`/debian/tmp/usr/man/man3 \
- install
-
- PS: I'm not a debian developer/fan. If at all, I'd recommend
- www.stampede.org (since they are using my compiler ;), but the
- _best_ thing is DIY.
-
- SUPPORT/MAILING LISTS/MORE INFO
-
- There is a mailinglist for general discussion about Gimp-Perl. To
- subscribe, send a mail with the single line
-
- subscribe
-
- to gimp-perl-request@lists.netcentral.net.
-
- If you want to get notified of new versions automatically, send a
- mail with the single line:
-
- subscribe notify-gimp
-
- to majordomo@gcc.ml.org.
-
- You can also upload your scripts to the gimp registry at
- http://registry.gimp.org/, part of it is dedicated to gimp-perl.
-
- BLURB
-
- Scheme is the crappiest language ever. Have a look at Haskell
- (http://www.haskell.org) to see how functional is done right. I am
- happy to receive opinions on both languages, don't hesitate to tell
- me.
-
- LICENSE
-
- The gimp-perl module is currently available under the GNU Public
- License (see COPYING.GPL for details) and the Artistic License (see
- COPYING.Artistic for details). Many of the scripts in the example
- section follow these rules, but some of them have a different
- licensing approach, please consult their source for more info.
-
- THREATS
-
- Future versions of this package might be distributed under the
- terms of the GPL only, to be consistent with the rest of the
- Gimp. Andreas keeps me from doing this, though.
-
-
- (c)1998,1999 Marc Lehmann <pcg@goof.com>
-
- EXAMPLE PERL PLUG-IN
-
- To get even more look & feel, here is a complete plug-in source,
- its the examples/example-fu.pl script from the distribution.
-
- #!/usr/bin/perl
-
- use Gimp;
- use Gimp::Fu;
-
- register "gimp_fu_example_script", # fill in a function name
- "A non-working example of Gimp::Fu usage", # and a short description,
- "Just a starting point to derive new ". # a (possibly multiline) help text
- "scripts. Always remember to put a long".
- "help message here!",
- "Marc Lehmann", # don't forget your name (author)
- "(c) 1998, 1999 Marc Lehmann", # and your copyright!
- "19990316", # the date this script was written
- "<Toolbox>/Xtns/Gimp::Fu Example", # the menu path
- "RGB*, GRAYA", # image types to accept (RGB, RGAB amnd GRAYA)
- [
- # argument type, switch name , a short description , default value, extra arguments
- [PF_SLIDER , "width" , "The image width" , 360, [300, 500]],
- [PF_SPINNER , "height" , "The image height" , 100, [100, 200]],
- [PF_STRING , "text" , "The Message" , "example text"],
- [PF_INT , "bordersize" , "The bordersize" , 10],
- [PF_FLOAT , "borderwidth" , "The borderwidth" , 1/5],
- [PF_FONT , "font" , "The Font Family" ],
- [PF_COLOUR , "text_colour" , "The (foreground) text colour", [10,10,10]],
- [PF_COLOUR , "bg_colour" , "The background colour" , "#ff8000"],
- [PF_TOGGLE , "ignore_cols" , "Ignore colours" , 0],
- [PF_IMAGE , "extra_image" , "An additonal picture to ignore"],
- [PF_DRAWABLE , "extra_draw" , "Somehting to ignroe as well" ],
- [PF_RADIO , "type" , "The effect type" , 0, [small => 0, large => 1]],
- [PF_BRUSH , "a_brush" , "An unused brush" ],
- [PF_PATTERN , "a_pattern" , "An unused pattern" ],
- [PF_GRADIENT , "a_gradients" , "An unused gradients" ],
- ],
- sub {
-
- # now do sth. useful with the garbage we got ;)
- my($width,$height,$text,$font,$fg,$bg,$ignore,$brush,$pattern,$gradient)=@_;
-
- # set tracing
- Gimp::set_trace(TRACE_ALL);
-
- my $img=new Image($width,$height,RGB);
-
- # put an undo group around any modifications, so that
- # they can be undone in one step. The eval shields against
- # gimp-1.0, which does not have this function.
- eval { $img->undo_push_group_start };
-
- my $l=new Layer($img,$width,$height,RGB,"Background",100,NORMAL_MODE);
- $l->add_layer(0);
-
- # now a few syntax examples
-
- Palette->set_foreground($fg) unless $ignore;
- Palette->set_background($bg) unless $ignore;
-
- fill $l BG_IMAGE_FILL;
-
- # the next function only works in gimp-1.1
- $text_layer=$img->text_fontname(-1,10,10,$text,5,1,xlfd_size($font),$font);
-
- gimp_palette_set_foreground("green");
-
- # close the undo push group
- eval { $img->undo_push_group_end };
-
- $img; # return the image, or an empty list, i.e. ()
- };
-
- exit main;
-
-