[vtkusers] InfoVis: vtkGraphLayoutView in QVTK Widget

[Eric E. Monson]

Hey again,

I just tried to follow the Cxx EasyView and it still opens another  
render window with all of my graph stuff in it, and the QVTK widget  
just shows garbage from the last application that I ran (which here  
happens to be another PyQt4 app showing a cylinder that worked just  
fine -- screen shot attached).

class SimpleView(QtGui.QMainWindow):

     def __init__(self, parent = None):

         QtGui.QMainWindow.__init__(self, parent)
         self.ui = Ui_MainWindow()
         self.ui.setupUi(self)

         self.view = vtk.vtkGraphLayoutView()
         self.ui.vtkWidget.SetRenderWindow(self.view.GetRenderWindow())


I'm using OS X 10.5.7, Qt 4.4.3, VTK CVS from June 18th, Python 2.5.

Thanks,
-Eric

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On Jun 29, 2009, at 9:59 AM, Eric E. Monson wrote:

> Hello,
>
> I have a little Python/PyQt4 app that I made about six months ago to  
> view graphs using the Titan classes. A vtkGraphLayoutView should  
> show up in a QVTK Widget which I placed using Designer, but now with  
> CVS VTK I get a separate RenderWindow popping up showing my graph...
>
> vtkGraphLayoutView used to have a SetupRenderWindow() method, so I  
> used to set things up by:
>
>        QtGui.QMainWindow.__init__(self, parent)
>        self.ui = Ui_MainWindow()
>        self.ui.setupUi(self)
>
>        self.ren = vtk.vtkRenderer()
>        self.ui.vtkWidget.GetRenderWindow().AddRenderer(self.ren)
>
>        [...]
>
>        self.view = vtk.vtkGraphLayoutView()
>        win = self.ren.GetRenderWindow()
>        self.view.SetupRenderWindow(win)
>
> Now if I just take out the view.SetupRenderWindow(win) call, I get a  
> separate RenderWindow popping up and the QVTK widget is all black. I  
> tried reordering the calls to something like this:
>
>        self.view = vtk.vtkGraphLayoutView()
>        self.ren = self.view.GetRenderer()
>        self.ui.vtkWidget.GetRenderWindow().AddRenderer(self.ren)
>        self.win = self.ui.vtkWidget.GetRenderWindow()
>
> Then the graph shows up in BOTH the extra window and my QVTK Widget.
>
> I know I'm just ignorant about the correct method -- can anybody  
> help me set up a vtkGraphLayoutView in a QVTK Widget properly?
>
> Thanks a lot,
> -Eric
>
> ------------------------------------------------------
> Eric E Monson
> Duke Visualization Technology Group
>
>
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