Considering to re-license the Windows Ink support code as BSD 2-Clause

[Alvin Wong]

Dear all,

I've committed the relevant change to the master branch. It can be
viewed on https://phabricator.kde.org/R37:be4ed821832f

Best Regards,
Alvin Wong

Alvin Wong <alvinhochun+krita at gmail.com> 於 2018年7月14日週六 上午12:05寫道：
>
> Dear all,
>
> I have been told by multiple people that OpenToonz developers would
> like to make use of the Windows Pointer Input Message (Windows Ink on
> Windows 8 or above) support code files
> (libs/ui/input/wintab/kis_tablet_support_win8.h and
> libs/ui/input/wintab/kis_tablet_support_win8.cpp) that I wrote for
> Krita, but couldn't due to Krita being GPLv2+ and OpenToonz being
> licensed in BSD 3-Clause, Currently Drawpile has already adopted these
> code with no issues since Drawpile is GPLv3.
>
> I would be fine with allowing OpenToonz to use the current version of
> the code in BSD 3-Clause licence, but this would seem short-sighted
> since future changes of the code in Krita wouldn't make it into
> OpenToonz without further permissions, and it would get more
> complicated if other developers make changes.
>
> Therefore, I am considering to re-license these two files within the
> Krita repo as BSD 2-Clause (BSD 3-Clause is not allowed according to
> KDE policies), and request that in the future other developers who
> make changes to these two files within Krita should agree to license
> their changes as BSD 2-Clause. A problem with this approach is that if
> Drawpile, OpenToonz or other derivatives make other functional changes
> under a more restrictive licence (e.g. GPL or even BSD 3-Clause), they
> can't be backported to Krita without explicit permission. It would
> also mean that even closed-source software can use code from these two
> files, though I don't have problems with this. Drawpile and others can
> still continue to use the current or older versions of the files (and
> derivatives of it) as GPLv2+, though it would get a bit complicated if
> they wish to include any future changes.
>
> The process should be as simple as me making a commit to change the
> license comment blocks in these two files.
>
> Are there any technical issues with this approach, or did I show any
> misunderstanding in the previous paragraphs?
>
> I would like to have this done in no more than a week, so if there are
> any concerns please raise them as soon as possible.
>
> Best Regards,
> Alvin Wong
>
> CC: OpenToonz develoeprs John Dancel and Jeremy Bullock and Drawpile
> developer Calle Laakkonen