sw: if the fly is to be split, then limit its growth in SwFlyFrame::Format()

It seems the first direct cause why flys are not split is because flys
can grow forever, so an inner paragraph's SwContentFrame::MakeAll() will
never hit the nBottomDist < 0 condition, which is necessary to call into
SwFlowFrame::MoveFwd().

With this, at least nBottomDist is negative when a fly with two
paragraphs is at the bottom of a page and only one of them fits the body
frame.

Also add a debug environment variable, so I can debug the "fly split"
case till we don't have import/export filters for this.

Towards an initial layout for multi-page fly frames.

Change-Id: I43114b5795dd42e518a1d776ccd2e7ab607ad859
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/146376
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

0 files changed, 0 insertions, 0 deletions