https://bugs.documentfoundation.org/show_bug.cgi?id=118221
--- Comment #27 from Eike Rathke <[email protected]> ---
(In reply to OfficeUser from comment #25)
> @Stuart:
> > "Suspect flushing all cell content through edit engine just to provide
> > layout kerning is going to impose considerable performance drag.
>
> Are there any values for a performance degrade available if using EditEngine
> always?
I did a short stress testing right now, =1 formulas in narrow (optimal width)
columns to have as many columns as possible to paint filling a screen width,
5000 rows, jump to end, hold PageUp to scroll to row 1: takes 5 seconds;
compiled to force EditEngine takes 30 seconds.
> > What might be possible is for non-EditEngine cells tell OutputDevice to
> > force kerning off via SalLayoutFlags::DisableKerning (I didn't track how
> > exactly we call OutputDevice draws there).
>
> Is this possible to change per character? We need to keep in mind that we
> are talking of a character attribute (like bold, underlined, ...).
As said in my previous comment, for inline formatted content (i.e. per
character attribution) already EditEngine text is used.
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