editeng: use text scaling that better mimics MSO text scaling

Implement text scaling algorithm that is similar to MSO text
scaling for text boxes for the compatibility purpuse, so that the
Impress slides better match how the PP slides are layed out.

This also moves the implementation into EditEng, where it is
possible to better control how searching for the best scaling
factor is performed without doing additional irrelevant work or
trigger invalidations that should not be triggered.

An additional change is that the paragraph with no content at the
end are ignored, and are not taken into account when determining
the height of the content. This is done for compatibility reasons.

Fix horizontal spacing of tabs - the spacing shouldn't be scaled
and the tab shouldn't include the space at the beginning of the
line.

Change-Id: Ie37fa67f1cf300e915a4ebaef2a7f968bf6c5744
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/165441
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

0 files changed, 0 insertions, 0 deletions