QVTKRenderWindowInteractor: switch right and middle button clicks

Development
1

I am using QVTKRenderWindowInteractor inside a PySide6 application. I would like to change the events of the right and middle (wheel) buttons to match the interactions of some other apps we are using.
To be honest, I am not sure how to approach it. I have tried to connect some functions to RightButtonClickEvent but 1) this does not cancel the default event of zooming in/out, 2) I am not sure how to redirect the wheel button click here instead.

I have seen this in source code:

    def mousePressEvent(self, ev):
        ctrl, shift = self._GetCtrlShift(ev)
        repeat = 0
        if ev.type() == QtCore.QEvent.MouseButtonDblClick:
            repeat = 1
        self._Iren.SetEventInformationFlipY(ev.x(), ev.y(),
                                            ctrl, shift, chr(0), repeat, None)

        self._ActiveButton = ev.button()

        if self._ActiveButton == QtCore.Qt.LeftButton:
            self._Iren.LeftButtonPressEvent()
        elif self._ActiveButton == QtCore.Qt.RightButton:
            self._Iren.RightButtonPressEvent()
        elif self._ActiveButton == QtCore.Qt.MidButton:
            self._Iren.MiddleButtonPressEvent()

So it seems a bit to me as if all these events are under one function which then itself decides which button was pressed.

So do I need to somehow rewrite this whole event? Is it possible from Python? I definitely do not want to rewrite it in VTK & rebuild it just for this. Any workaround that can be applied? Or am I rather stuck with default controls if I do not want to mess with source?

2

If you don’t want to zoom in when dragging the mouse, you could either override the mouseMoveEvent and disable dollying or setup a custom interactor style that changes the behavior of interaction like in the example: https://examples.vtk.org/site/Python/Interaction/MouseEvents/