Allow exporting whole drawing as single-page PDF

[septatrix]

Is your feature request related to a problem? Please describe.
Often I just starts drawing a large diagram or similar and want to export it as a single PDF without it being cut by page borders

Describe the solution you'd like
It should be possible to select an "unlimited" page size that results in the creation of a single PDF page large enough to contain the drawing (plus, ideally some margin)

Describe alternatives you've considered
Add DIN0, DIN-1, ... page sizes. These allow selecting a page size just big enough for the drawing but if the drawing does not have ration 1:√2 there is a lot of wasted space.

[flxzt]

Adding DIN-0, DIN-1 might be the most simple solution, what also comes to mind as alternative is to add PDF selection export.

[septatrix]

Adding DIN-0, DIN-1 might be the most simple solution

But even then the drawing might be larger than the page (though increasingly unlikely). It shouldn't be too hard to calculate the bounding box of all elements and then export as a PDF with its dimensions set to those of the bounding box

what also comes to mind as alternative is to add PDF selection export.

That would also be great and could be handled similarly

[flxzt]

But even then the drawing might be larger than the page (though increasingly unlikely). It shouldn't be too hard to calculate the bounding box of all elements and then export as a PDF with its dimensions set to those of the bounding box

that's exactly what PDF selection export would archieve :)