Re: [css] CSS.pm added

[Allen D. <da...@cs...>]

> The single suggestion I have for the moment would be to change the namespace. 
> CSS.pm would normally be reserved for the base class, or all encompassing 
> system, or something like that, relating to CSS. That's why there is no 
> XML.pm for instace, because none of the modules there are generic enough 
> (though there may be one at some point).

I'll see if I can come up with something more appropriate.

> Sorry for being thick, but I'm still not sure I understand what it does 
> correctly. Could you provide an example ?

Say you have an array of text that represents a 1-dimensional series, and
you want some of that series to be highlighted yellow.  You can just
put <SPAN> tags around the text, and get your yellow highlighting by
defining the class (or id) of the tag.

             ----------------                        <-- highlight section
ATCGTTAACTAGACCTAACTTGGGCCTAAACGATACCCCCTTGGAACAAAAA <-- whole series

Now say you have a GD image, and you want to draw a line that represents
this same series, with the same part in yellow, and the rest black.
Calculating which part of the line should be a different color is just
arithmetic.  To make the yellow section yellow, you have to do something
like:

   $fg = GD->color(255,255,0);
   GD->line($x1,$y1,$x2,$y2,$fg);

What my module allows you to do is configure this in my.css as:

   .highlight { background-color: yellow; }

and then do something more flexible, like:

   $css = CSS->new(-source=>'my.css');
   $fg  = GD->color($css->style('.highlight');
   GD->line($x1,$y1,$x2,$y2,$fg);

and still obtain the same result.

-Allen

__________________
Allen Day
all...@cs...
1.516.367.6904