[IGSTK-Developers] GUI : License : Copyrights
Kevin Gary
kgary at asu.edu
Sun Jan 22 14:46:10 EST 2006
Oh, one question though - will we have a new/modified copyright
statement on such external libraries to state it is GPL also?
Kevin
Luis Ibanez wrote:
>
>
> IGSTK does not depend on FLTK anymore.
>
>
> We remove those dependencies in order to
> facilitate the integration with Slicer.
>
> You will find now a CMake option for building
> IGSTK with or without FLTK.
>
> When you don't use FLTK, the View classes
> will not be compiled. Since, as David already
> pointed out, those are the only classes in
> IGSTK that rely on FLTK.
>
>
> In order to support Qt we should provide the
> Qt version of the current classes:
>
> View, View2D and View3D
>
>
> But...
>
>
> If we do so, those Qt dependent classes
> SHOULD NOT be distributed with IGSTK, because
> they are derivative work from Qt, and will
> contaminate IGSTK with a GPL license.
>
> If we write Qt-IGSTK binding, those classes
> should be distributed as an independent library,
> and that library will have to be subject to the
> GPL license, with at addendum specifying that
> if a developer has a commercial Qt license, then
> the Qt-IGSTK code will be covered by the same
> Qt commercial license.
>
>
>
> Kevin: What you are suggesting is to write the
> GUI of the validation tool using Qt ?
>
> or are you suggesting that if IGSTK uses
> Qt then it will be easier to write the
> validation tool ?
>
> We may have misinterpreted your email.
>
>
> If what you are suggesting is to write the
> validation tool using Qt, that is fine. The
> tool will be subject to a GPL license and
> will be distributed independently of IGSTK.
>
> IGSTK developers can use the GPLd tool for
> validating their designs, and do not need
> to link their applications with the tool, so
> their applications do not get contaminated
> with the GPL license.
>
>
>
> For more details on licensing and its troubles,
> you may find interesting the reading material
> at the end of the follwing NAMIC Wiki page:
>
> http://www.na-mic.org/Wiki/index.php/NAMIC_Wiki:Community_Licensing
>
> or go directly to:
> http://www.na-mic.org/Wiki/index.php/NAMIC_Wiki:Community_Licensing#Reading_List
>
>
> Lawerence Rosen book
>
> "Open Source Licensing:
> Software Freedom and Intellectual Property Law"
>
>
> is available online at
>
>
> http://www.rosenlaw.com/oslbook.htm
>
>
>
>
> Luis
>
>
>
> PS. Never understimage the reach of Copyright laws...
>
>
>
> The "Happy Birthday" song is still under copyright
> protection. You shouldn't sign it without asking
> for permission. The song still make about $2M a year
> in royalties. Time Warner is the copyright holder.
>
>
>
>
> ----------------------
> Julien Jomier wrote:
>> > We can't have GPL code in IGSTK. We possibly could have
>> > Qt commercial code, but only if any developer who touched
>> > that code held a Qt commercial license. That's a hard thing
>> > to regulate, but it is potentially doable.
>>
>> AFAIK we should be able to develop support for Qt in IGSTK. The new
>> Open-source version of Qt requires the following:
>>
>> - Make the complete source code of your program available to all end
>> users
>> - Allow all users to re-use, modify and re-distribute the code
>> - Give up your right to demand compensation for re-use and
>> re-distribution
>> - Add a notice to your program that it is GPL licensed when it runs
>>
>> And from the quote:
>> "If you are unsure of what license you need, then follow this simple
>> rule of thumb: If you're Open Source, Qt is Open Source. If you're
>> commercial, Qt is commercial."
>>
>> More info at: http://www.trolltech.com/download/opensource.html
>>
>> So I think from the toolkit point of view we can redistribute support
>> for Qt. Then the users should pay for the commercial license if they
>> want to use it in a commercial application, if they are going
>> open-source they will be ok.
>>
>> That said, I agree with David that IGSTK shouldn't be tied to a
>> specific GUI toolkit and it will be a good exercise to test it with
>> another GUI.
>>
>> Julien
>>
>> David Gobbi wrote:
>>
>>> Hi Kevin,
>>>
>>> Right now the View classes are still tightly tied to FLTK,
>>> but there has been definite motion away from absolute
>>> dependence of IGSTK on FLTK.
>>>
>>> The Qt licensing issue is a biggie... TrollTech is very
>>> explicit about their commercial licensing conditions.
>>> Anybody working on Qt code that will eventually become
>>> commercial, must hold a Qt commercial license before
>>> they begin working on the code, otherwise the code is
>>> strictly under the GPL and cannot be converted
>>> to the Qt commercial license at a later date.
>>>
>>> We can't have GPL code in IGSTK. We possibly could have
>>> Qt commercial code, but only if any developer who touched
>>> that code held a Qt commercial license. That's a hard thing
>>> to regulate, but it is potentially doable.
>>>
>>> - David
>>>
>>>
>>>
>>> --- Kevin Gary <kgary at asu.edu> wrote:
>>>
>>>> All,
>>>>
>>>> We have a dilemma with the validation tool we are writing. For the
>>>> GUI, it would be better to use Qt, but our understanding of the
>>>> Qt open source license is that it is GPL and therefore not compatible
>>>> with IGSTK licensing. Do we misunderstand Qt? I was under the
>>>> impression IGSTK was considering using it alongside FLTK?
>>>>
>>>> Thanks,
>>>> K2
>>>>
>>>>
>>>> --
>>>> ===
>>>> Kevin A. Gary, Ph.D.
>>>> Assistant Professor
>>>> DCST, ASU East
>>>> (480)727-1373
>>>> http://kgary2.east.asu.edu
>>>> kgary at asu.edu
>>>>
>>>>> begin:vcard
>>>>
>>>> fn:Kevin Gary
>>>> n:Gary;Kevin
>>>> org:Arizona State University Polytechnic;Division of Computing Studies
>>>> adr:Bldg. 140;;7001 E. Williams Field Road;Mesa;AZ;85212;USA
>>>> email;internet:kgary at asu.edu
>>>> title:Assistant Professor
>>>> tel;work:(480)727-1373
>>>> tel;fax:(480)727-1248
>>>> tel;cell:(602)312-7397
>>>> x-mozilla-html:FALSE
>>>> url:http://kgary2.east.asu.edu
>>>> version:2.1
>>>> end:vcard
>>>>
>>>>> _______________________________________________
>>>>
>>>> IGSTK-Developers mailing list
>>>> IGSTK-Developers at public.kitware.com
>>>> http://public.kitware.com/cgi-bin/mailman/listinfo/igstk-developers
>>>>
>>>
>>> _______________________________________________
>>> IGSTK-Developers mailing list
>>> IGSTK-Developers at public.kitware.com
>>> http://public.kitware.com/cgi-bin/mailman/listinfo/igstk-developers
>>>
>>
>> _______________________________________________
>> IGSTK-Developers mailing list
>> IGSTK-Developers at public.kitware.com
>> http://public.kitware.com/cgi-bin/mailman/listinfo/igstk-developers
>>
>>
>
> _______________________________________________
> IGSTK-Developers mailing list
> IGSTK-Developers at public.kitware.com
> http://public.kitware.com/cgi-bin/mailman/listinfo/igstk-developers
--
===
Kevin A. Gary, Ph.D.
Assistant Professor
DCST, ASU East
(480)727-1373
http://kgary2.east.asu.edu
kgary at asu.edu
-------------- next part --------------
A non-text attachment was scrubbed...
Name: kgary.vcf
Type: text/x-vcard
Size: 369 bytes
Desc: not available
URL: <http://public.kitware.com/pipermail/igstk-developers/attachments/20060122/a97848df/attachment.vcf>
More information about the IGSTK-Developers
mailing list