https://bugs.documentfoundation.org/show_bug.cgi?id=106453
--- Comment #9 from Michael Meeks <michael.me...@collabora.com> ---
So - a nice feature, but also something of a problem.
LibreOffice has to re-render (to pixels) the same scene <N> times where <N> is
the number of clients with different zoom levels. User's experience of latency
is extremely sensitive to the time it takes to render a tile, we already have a
highish network latency and I'm a little concerned here.
So - essentially making it easy to choose different zoom levels is likely to
make LibreOffice Online some multiple of times slower when many people are
using this; so - this is really not the ideal easy-hack =)
To mitigate the potential problem I would like to work to reduce the number of
zoom levels possible - particularly subtly different / fractional zoom levels
are a nightmare. If the zoom just flicks between say 4-5 pre-set zoom levels -
then this makes much more sense: we really want to make sure that our say 50
clients are not all at a different zoom.
+ it would be good to investigate what makes for a good range of levels
there - the smaller the better to be usable and then have an array of these
that we switch between. Of course touch devices can pinch-to-zoom but really we
need to reduce the set of acceptable levels there too I think ;-)
Thanks !
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