Unique selection (and forbid multiple selection)

[arabine]

Is it possible to select only one node and forbid the multiple selection? If not, I can develop a patch maybe?

[cneben]

Hi @arabine, unfortunately, it is not possible for the moment since qan::Graph::SelectionPolicy only allow CTRL or no selection policies.
I am currently adding a qan::Graph::enableMultipleSelection settings to implement the desired behaviour, please follow the #183 mention on develop.

[cneben]

• Add multipleSelectionEnabled support to qan::Graph.
• Modify the selection sample to demonstrate multipleSelectionEnabled.
• Enforce policy for "window selection" (CTRL + drag). (See GraphView::selectionRectActivated(const QRectF& rect)).
• Add documentation.

See selection sample:

@arabine I'am not really sure about the handling of selection rect (CTRL+click and drag), any suggestion would be welcome (perhaps it should be disabled with a property).

[arabine]

Ok saw it, wonderful. Maybe the selection rect should be disabled when the single selection is selected? (this is my case, we do not want selection rect).

[cneben]

For future reference, selectionRectEnabled has been enabled on qan::Navigable the handle that case.