tdf#108056 sw SubtractFlys: work with a polypolygon directly

In case the intention is that the clip rectangle should include the
page, except a fly frame, we built a list of rectangles that covered
this area. This introduces the problem if adjacent rectangles don't join
perfectly.

Instead allow lcl_SubtractFlys() to work on a clip state directly, this
way the clip polypolygon will only contain two paths (the page rectangle
and the rectangle of the fly), so rounding errors can't happen.

Change-Id: I5b2e9a382aa7d16f3b16509670de754b5e00bd6d
Reviewed-on: https://gerrit.libreoffice.org/38066
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>

0 files changed, 0 insertions, 0 deletions