Review Request 129159: Major performance improvement when turning previews off in the file dialog.

[Aleix Pol Gonzalez]

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+1 makes sense

- Aleix Pol Gonzalez


On Oct. 12, 2016, 3:35 p.m., David Faure wrote:
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> https://git.reviewboard.kde.org/r/129159/
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> (Updated Oct. 12, 2016, 3:35 p.m.)
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> 
> Review request for KDE Frameworks.
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> Bugs: 346403
>     https://bugs.kde.org/show_bug.cgi?id=346403
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> Repository: kio
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> Description
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> Added a method for this KDirModel so it can emit dataChanged only once
> (or once per dir in a tree) rather than for every item.
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> CCBUG: 346403
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> Diffs
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>   src/filewidgets/kdiroperator.cpp 59b1141e3ffb8e95680e98ed29073a977d8d52a8 
>   src/filewidgets/kfilepreviewgenerator.cpp 6937110aa53424f87575166109fa122452f9a817 
>   src/widgets/kdirmodel.h 0cefcae6b3c6e14b0505683ff533bf25e7ccf583 
>   src/widgets/kdirmodel.cpp 2e81d30990c0eb2af742fe1c811f991c0ad892e9 
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> Diff: https://git.reviewboard.kde.org/r/129159/diff/
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> Testing
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> kdialog --getopenfilename /dir/with/many/images
> Clicking on the file dialog's "preview" button to turn them off.
> Before: 100% CPU for a minute or so
> After: immediate response
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> 
> Thanks,
> 
> David Faure
> 
>

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