Minutes of the Design Hangout: 2014-12-10

Jan Holesovsky kendy at collabora.com
Fri Dec 12 00:53:23 PST 2014

Hi Jan-Marek,

Jan-Marek Glogowski píše v Čt 11. 12. 2014 v 15:59 +0100:

> > * KDE5 vclplug
> >  
> >     + working on it
> >     + when is the next release? (Jonathan)
> >          + 4.5 in 6 months
> So somebody started a real KDE5 backend? From scratch or based on KDE4?
> Because the KDE4 backhand has some limits. Most of the stuff in the
> following list is implemented in the Gtk+ backend.

Yes, Jonathan (CC'd) has - at the Munich hackfest :-)  Initially he's
started with the KDE4 backend from what I know (it is always easier to
start with something that at least somehow works), but not sure what are
his next plans - Jonathan?

> - No modal native dialogs
>   LO VCL KDE4 doesn't use QWidgets, so AFAIK there is no way to
> implement the modal for the file picker . Gtk+ wraps the LO widgets in
> GtkWidgets, so modal native dialogs work.
> - No native widgets
>   LO VCL KDE4 basically just uses some painting methods to render stuff.
> But we miss quite some stuff and others - like Oxygen menus can't really
> be used. But the KDE4 plugin can reimplement the SalMenu, like Gtk does
> to get the "real" background from the engine.
> - Slow
>   All drawing operations are performed on a single image and copied to
> X. This image is always destroyed and there is basically no caching.
> Gtk+ keeps a caching widget per type around.
> - Use KIO
>   Currently LO sets "X-KDE-Protocols=file,http,ftp,webdav". Even smb was
> included for some time. But actually this depends on the native load /
> save dialog settings, and even the VCL backend, because the KDE4 file
> picker / VCL backend doesn't support neither smb nor webdav without KIO.
> See
> http://lists.freedesktop.org/archives/libreoffice/2014-September/063621.html
>   http://lists.freedesktop.org/archives/libreoffice/2014-October/063876.html
> AFAIK there are still also Qt5 patches missing - same stuff that is was
> fixed for Qt4, but also isn't in (yet).

All the best,

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