NAME
Image::BioChrome - Colorise gif files by rewriting the color table
This module is still considered ALPHA code, the module and interfaces
are still subject to change.
SYNOPSIS
my $bio = new Image::BioChrome $file;
$bio->colors(.....);
or
$bio->alphas(.....);
$bio->write_file($file);
# cause the file to be re-read from the source
$bio->read_file();
DESCRIPTION
This module is designed to recolor images files. I built it because I am
regularly producing web sites with many common interface graphics where
we just need to change the colors. The name BioChrome comes from the
name of the special color changing cells that give a Chameleon its color
changing ability.
Also included in the distribution are modules that allow Apache (with
mod_perl) to build images on the fly and a Template::Toolkit plugin to
allow the creation of images from within a Template.
An instance of a Image::BioChrome should be created for each image file
that you want to work on.
my $b = new Image::BioChrome 'test.gif';
In order to then change the colors you need to pass the color change
information to the module using either the colors or alphas methods.
Both methods support passing the color information as either a "color
string" or an array ref to a set of colors.
A color string is simply a series of hexadecimal rgb triples separated
by character other than 0-9, a-f or #. For example ff0000_00ff00_0000ff
is red followed by green followed by blue.
$b->colors('ff0000_00ff00_0000ff')
or
$b->colors(['ff0000','00ff00','0000ff']);
or
$b->colors('ff0000','00ff00','0000ff');
The same rules apply for the setting of alpha colors.
Now you may be asking yourself what the module does with the color
information. The best answer is to look at the documentation in the
examples directory. Explaining how colors are processed in ascii art is
really difficult.
Once you have passed the relevant color information the file can be
written to disk by calling the write file method.
$b->write_file('output.gif');
Currently BioChrome will only recolor GIF files. Any file which it is
not capable of being recolored will simply be copied when write_file is
called.
SEE ALSO
Apache::BioChrome, Template::Plugin::BioChrome
AUTHOR
Simon Matthews <
[email protected]>
REVISION
$Revision: 1.15 $
COPYRIGHT
Copyright (C) 2003 Simon Matthews. All Rights Reserved.
This module is free software; you can distribute it and/or modify it
under the same terms as Perl itself.