Add viewhelper for header / footer elements about pdfviewhelpers

[maechler]

I think @macjohnny is proposing a feature similar to this:

<pdf:document>
   <pdf:header>
       <pdf:text>Some headline text: {yourVariable}</pdf:text>
   </pdf:header>
   <pdf:footer>
       <pdf:text>Footer, we are on page {currentPage}</pdf:text>
   </pdf:footer>
   <pdf:page>
       <pdf:header>Maybe we can overwrite header and footer on pages?</pdf:header>
   </pdf:page>
</pdf:document>

It should be possible to define header and footer on document level. Probably there should also be the possibility to overwrite header and footer on page level and variables like {currentPage} should be provided. In this scenario you could use dynamic data from your model.
I am not sure however how this feature could be implemented. Maybe it is possible to store a reference to e.g. HeaderViewHelper and then render its children on each page with a new set of variables like {currentPage}.

[Gernott]

That would be great! I would sponsor €100 for something like this.

[maechler]

I started progress on this one and created a working example: bb942c3
https://github.com/bithost-gmbh/pdfviewhelpers/tree/feature/headerFooterSupport

It seems to be easier than expected, although it still needs some effort until it is ready to be used.

[maechler]

@Gernott I just released pdfviewhelpers v2, it contains header and footer ViewHelpers and lots of other features. If you still feel like sponsoring, a contribution would be very welcome!
See https://github.com/bithost-gmbh/pdfviewhelpers#support-development

[macjohnny]

Currently, it is necessary to extend the class defined in plugin.tx_pdfviewhelpers.settings.config.class, overwrite the Header() or Footer() method or both and set the custom class in plugin.tx_pdfviewhelpers.settings.config.class

The Header() and Footer() methods are called for every new page added.

[macjohnny]

See the example in https://github.com/bithost-gmbh/pdfviewhelpers/blob/master/Classes/Model/BithostTCPDF.php#L42

[PeterSchuhmann]

I think this solution only works if you have a static header and footer. but what if you want to add dynamic data like data from your model?

[maechler]

This is implemented and tested in the current develop branch and will be released as part of pdfviewhelpers v2.