Scroll entire pages in readonly documents with API (Writer)

Hi,

How can I scroll entire pages, regardless of current zoom setting, in writer via the API?
I tried using XPageCursor->jumpToPreviousPage() but this doesn't work when the document is readonly.

Dispatching .uno:PageUp only scrolls in screen/view sizes, not page sizes.
.uno:GoToStartOfPrevPage doesn't work in readonly either.

I'm using C++ btw.

Regards,
Thomas