Optimization thought, concurrent importing of slides

[Mike Kaganski]

Hi,

On 19.10.2020 6:32, 方振华(601661) wrote:
> Our two competitors MS Office/WPS do not have the problem of scaling. 
> Opening a document with 100 slides makes little percetible difference 
> from opening a PPT of one single slide. We take a look at the code, and 
> we think, maybe, instead of importing the document slide by slide, would 
> it be possible to import all the slides at once with multiple threads?
> 
> Has anyone made such attemp? What stops us from using concurrent processing?

Looks like this is what 
https://git.libreoffice.org/core/+/8062e88e73acd8d1f9a62b0bd519b499693285e3 
recently did for ODF case, it seems?

> 
> Here are the code snippet, in oox/source/ppt/presentationfragmenthandler.cxx
> void PresentationFragmentHandler::finalizeImport()
> {
> ...
>              int nPagesImported = 0;
>              for (sal_Int32 elem : aRangeEnumerator)
>              {
>                  if ( rxStatusIndicator.is() )
>                      rxStatusIndicator->setValue((nPagesImported * 
> 10000) / aRangeEnumerator.size());
> 
>                  importSlide(elem, !nPagesImported, bImportNotesPages);
>                  nPagesImported++;
>              }
> ...
> }
> 
> 
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-- 
Best regards,
Mike Kaganski