Implementing Widgets for Selecting Nodes of Type Segment and Beam

Development
1

Hello Dear Developers and Users,

My question is probably very basic, so I would appreciate your guidance Or guide me on which tutorial I should refer to in order to implement functions for widgets that select nodes of different types, such as Beam, Segment, Volume, or Model.

I want to develop a module containing a widget for selecting one of the Beam nodes under the RTPlan node and a widget for selecting one of the Segment nodes under the Segmentation node. To do this, I created an Extension called moduleRTPlan in the Extension Wizard. Then, I added a module named BeamTry01 to moduleRTPlan. Next, I switched to the BeamTry01 module in the Example Category. At this stage, I clicked on Edit UI to enter the Qt Designer environment and removed all the default widgets that were created. Now, I have two questions:

  1. From the Slicer [MRML Widget] list, which widget is appropriate for a Beam node?

  2. I understand that to create a widget for selecting one of the Segments under the Segmentation node, I should use a widget named qMRMLSegmentSelectorWidget.

In the following figure, you can see that I used qMRMLSegmentSelectorWidget to select a Segment from the Segmentation node. To select a Beam from the available list for the RTPlan node, I used the ctkCollapsibleButton widget. However, unfortunately, the Segment selection widget is completely inactive, and the Beam selection widget does not show any Beams.

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Please guide me.

Best regards.
Shahrokh

2

If you are creating a new module, your main module widget should be derived from qSlicerModule.

Then you must connect signal mrmlSceneChanged(vtkMRMLScene*) from your module widget to the slot setMRMLScene(vtkMRMLScene*) of widgets where you want to choose a node or a segment of ROI (see Signal/Slot editor in Qt Designer).

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You can check ui files using Qt designer for example in the ExternalBeamPlanning module (/Resourses/UI/qSlicerExternalBeamPlanning.ui).

For qMRMLNodeComboBox widgets you should set a required types of nodes (vtkMRMLRTPlanNode or vtkMRMLRTBeamNode) you want to choose from.

3

Dear Mikhail Polkovnikov,

Thank you very much for your guidance. As mentioned in my issue titled Understanding UI Editing and Python File Generation in 3DSlicer with Qt Designer - Development - 3D Slicer Community, the roadmap I have set for myself is to familiarize with the implementation of the components of the widgets that I need to use in my module. Then, I should connect these components together in the way you suggested. Completing these steps is time-consuming for me, but I will do my best to complete them.
Best regards.
Shahrokh