sw: fix unwanted long vertical border around vertically merged Word cell

In case cells A1 and A2 are vertically merged, they can still specify
different border properties for the two cells. Word draws the border
properties of the covered cells, while Writer ignores the formatting of
A2 in this case and only uses the properties of the covering cell.

Table cell border collapsing rules already differ in Word and Writer, so
SwTabFramePainter::Insert() knows if the table cell's border is
Word-style or not. Extend this code to handle vertically merged cells
better.

In general, this means a cell no longer has a fixed set of 4 borders,
but each edge may have several sub-borders. This commit is a step in
that direction, and handles the case when a vertical (left or right)
border style is set initially, but not set at the end -- as we iterate
through the list of cells in a vertical merge.

Change-Id: I35a05097ce70243099307ce8066766aef61a2bc5
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/111954
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

0 files changed, 0 insertions, 0 deletions