[vtkusers] Problem QVTKWidget using vtkCarbonRenderWindow instead of vtkCocoaRenderWindow

[clinton at elemtech.com]

VTK uses Cocoa by default, so yes, vtk-5.3 will work with Cocoa, and there are 
others using it too.  I assume that's the change you're asking whether would 
be hard or not.

As far as I know, its just a matter of fixing the QVTK implementation to work 
with Cocoa, but that requires a Qt version that isn't fully functional and 
hasn't been released yet.

Clint

On Tuesday 23 September 2008 11:12:45 am Elvis Dowson wrote:
> Hi Clinton,
>                         Would you happen to know who implemented the
> Carbon support for vtk on MacOSX? Will it be really difficult to
> change it? From the vtk side, it appeared to be cleanly partitioned
> and although I didnt go beyond the QVTK plugin, an implementation for
> vtkCocoaRenderWindow appeared to be there (didn't check the
> implementation, through).
>
> So, my first question, will vtk-5.3 work out-of-the-box with Cocoa?
>
> If yes, then I guess it's just a matter of fixing the QVTK
> implementation, plus finding a way to switch between Carbon and Cocoa
> implementations.
>
> Best regards,
>
> Elvis Dowson
>
> On Sep 23, 2008, at 8:15 PM, clinton at elemtech.com wrote:
> > Nearly all the Mac specific code in there is for Carbon, and works
> > around
> > Carbon limitations.
> > Its probably going to be more like replacing the
> > #ifdef Q_WS_MAC
> > with a flag that indicates a Mac/Carbon Qt, and only call that code
> > with
> > Carbon.  Ideally, that flag would come from something like
> > qglobal.h.  If
> > not, we should ask Trolltech to put a #define in there to help
> > people switch
> > from Carbon to Cocoa.
> > At that point, it should theoretically work with Cocoa.
> >
> > Clint
> >
> >> Elvis, you are _probably_ in brand new territory at this point. I
> >> certainly have not tried anything with Qt 4.5 (I don't have the
> >> time),
> >> let alone with VTk thrown into the mix.
> >>
> >> Theoretically all you should have to do is Build Qt 4.5. Build VTK
> >> with
> >> Cocoa support instead of Carbon Support. The rest _should_ work.
> >> Let the
> >> list know what you find out.
> >>
> >> Mike
> >>
> >> Elvis Dowson wrote:
> >>> Hi Mike,
> >>>                   There is an alpha release of Qt-4.5 on the troll
> >>> tech website. Here is the link:
> >>> http://trolltech.com/company/newsroom/announcements/press.2008-06-09.71
> >>>17 549806/?searchterm=Qt%204.5
> >>>
> >>>
> >>> Could you guide me on what I should do to modify vtk to support
> >>> Qt-4.5
> >>> using Cocoa? I'm basically trying to get the QVTK plugin to compile
> >>> correctly and use the Cocoa framework.
> >>>
> >>> Best regards,
> >>>
> >>> Elvis Dowson
> >>>
> >>> On Sep 23, 2008, at 5:36 PM, Mike Jackson wrote:
> >>>> Qt 4.5 will be based on Cocoa (That is the current news from TT).
> >>>> Qt
> >>>> 4.4 is CARBON based so you will have to build VTK using Carbon=ON
> >>>> if
> >>>> you want to use Qt. As far as supporting Cocoa/Qt in the future I
> >>>> am
> >>>> not sure if anyone has really looked at it yet. _IF_ TrollTech does
> >>>> deliver Qt/Cocoa for Qt 4.5 then the test is pretty simple. If
> >>>> the Qt
> >>>> Version is less than 4.5 then use Carbon. If it is 4.5 or above use
> >>>> Cocoa. This can be detected in CMake and set accordingly.
> >>>>
> >>>> Q_WS_MAC is defined by Qt in its header files.