tdf#98646 Fixed freeze by flattening loops

DrawViewShell::MakeVisible was using loops for finding the area
to change the visible part of the EditView to. That could (and did)
potentially loop for a long time for very large objects, deep zoom or
numerical problems. That loops were flattened, the results checked
to be the same.
Also added a test for numerical overflow for getting values from the
Rectangle describing the object size. Despite these values being
the result of erraneous import, I opt for checking and avoiding using
these values.

Change-Id: I783dc1f2ad9b6a60a47e660b0d576ea3f22a4e42
Reviewed-on: https://gerrit.libreoffice.org/23278
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>
Reviewed-by: Armin Le Grand <Armin.Le.Grand@cib.de>

0 files changed, 0 insertions, 0 deletions