[Libreoffice-bugs] [Bug 76324] CALC becomes very slow with 5000+ comments

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=76324

--- Comment #78 from Julien Nabet <serval2412 at yahoo.fr> ---
(In reply to Noel Grandin from comment #77)
> @Julien the cost is all in the std::sort, and we should be able to avoid
> that, since we already have a map that we can use to look the shape up

I agree most of time is spent in std::sort. But this one is called from
accessible part which isn't used by gen rendering or Windows I think.
So we'll just speed up Linux non gen rendering part here.
That's why I had talked about notify calls.
Sometimes, we notify n times because of a loop, instead of just notifying once
(eg for redrawing) after the end of loop.

Anyway, just to be sure to understand:
should we replace all "maZOrderedShapes" uses by "maShapesMap" or should we use
"maShapesMap" in ScShapeDataLess to speedup sorting? Or did you have something
else on mind?

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