Showing a qMRRMLWidget instead of the view layout

Development
1

Hi :wave:

I want to display a widget that will takes the space used by the view layout.
As I understand after reading reply to this post I can’t have a QMRMLWidget as a part of a custom layout.

I tried to manually set my widget to be the centralWidget of the mainWindow with

mainWindow = slicer.util.mainWindow()
mainWindow.setCentralWidget(mywidget)

and I see the result, but the existing layout manager get’s destroyed.

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image1684×1202 202 KB

So when I try to revert to a view layout I am met with an error:

ValueError: Trying to call 'setLayout' on a destroyed qSlicerLayoutManager object

Here’s the sample code. Copy-paste into Slicer python interpreter works.

I guess that setting the centralWidget like that is not a good idea. Can anyone advice how to correctly show my widget in the middle of the main window?

2

Custom widgets are placed inside the view layout. The simplest way is to use qSlicerSingletonViewFactory as it is done in the DICOM module.

1 Like
3

Thanks, this something that I wanted to try.

4

Thanks, it worked.

I’ve added

viewFactory = slicer.qSlicerSingletonViewFactory()
viewFactory.setWidget(mywidget)
viewFactory.setTagName("helloLayout")
layoutManager.registerViewFactory(viewFactory)

layout = (
    "<layout type=\"horizontal\">"
    " <item>"
    "  <helloLayout></helloLayout>"
    " </item>"
    "</layout>"
)

customLayoutId = 42

layoutNode = slicer.app.layoutManager().layoutLogic().GetLayoutNode()
layoutNode.AddLayoutDescription(customLayoutId, layout)

layoutManager.setLayout(customLayoutId)

instead of manipulating the centralWidget and got a nice layout with my widget.

1 Like