Problem with bbcode and generate_text_for_display

[geomar]

I want to do a kind of custom parsing of certain bbcode tags and replace them with images which are created by the server using tex-live engine for lateX. I succeeded in doing that inside function generate_text_for_display (file functions_content.php) where I replaced the bbcode with the image I wanted.The problem is that although this "custom bbcode parsing" I did works fine on viewtopic,it doesn't work on preview mode. So I was wondering,what do I have to do in order to modify the text BEFORE it is displayed in preview mode?I was assuming that the function generate_text_for_display was used for preview as well but it appears it isn't.

Thanks in advance,
George

[Ger]

I have a working dedicated extension for a science related board, part of which holds a LaTeX BBcode. It doesn't require you to modify core files, so I think you'll be better off with it.

It's quite rough ATM, but the LaTeX part works. It uses the core.text_formatter_s9e_configure_before event, where I do:

Code: Select all

$usage = '[tex hash={ALNUM;useContent}]{TEXT}[/tex]';
		$template = '<img class="bbc_img" src="./images/latex/pictures/{@hash}.png" alt="LaTeX" />';
		$event['configurator']->BBCodes->addCustom($usage, $template);
		$event['configurator']->tags['tex']->attributes['hash']->filterChain->prepend('\ger\sciencebbcode\helpers\tex_helper::generateHash');

The $tex_helper::generateHash($formula) processes the LaTeX code input to a Tex doc, which is converted to an image that's stored with a MD5 hash of the input as filename.

If you're interested, I can see if I can make this available on Github. I need to check license stuff for this though, since I use a LaTeX Rendering Class by Benjamin Zeiss from 2003 (but reworked to work on PHP 5.5).