Grouped markups display control

[jamesobutler (James Butler)]

@muratmaga

Having a folder created by the user and all nodes to be control are moved inside, and in the markups window, the display is enabled for this folder level (which applies to all nodes inside it).

This reminds of related discussion about should a folder in the subject hierarchy be able to control display states of all things that are under it. Also discussed as Controlling visibility of volume node children in subject hierarchy · Issue #4961 · Slicer/Slicer · GitHub. Node visibility is a display property just like markup display visibility or markup color etc.

Subject Level visibility button works only partially

It appears that setting the visibility off in subject level does not hide volume in slice views. To replicate: Download and render MRHead. Create a single fiducial on MRHead 3D view. Center the slice views on fiducial create a new subject and nest both MRHead and fiducial node beneath it. Turn off the visibility for the subject level and observe that all 3D views are turned off, as well as visibilty of fiducial in 2D view, but the volume in slice views remains visible. Replicated in latest st…

I think this type of discussion will need to continue as there seemed to be many things to consider. For example a folder as shown in the subject hierarchy could contain nodes of a single type as shown, but it could also contains other nodes such as volume nodes.