Take a snapshot of what's under the cursor first and keep it,
draw the cursor and take another snapshot. Then timer just calls
an invalidate on the cursor area with the cursor reason for the
invalidation, and just swap those snapshots on each draw while
that's the only invalidation reason.
Change-Id: I49a26af292905556cd6033f814aa8175c0da69a4
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/199435
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
Caolán McNamara
ac8fa2c59a