Switch to mpl-pan-zoom to get widgetlocking behavior

[ianhi]

Hi all, and perhaps in particular @JamesWrigley

I saw these lines:

DAMNIT/damnit/gui/plot.py

Lines 66 to 76 in 4f17375

	# This is a filthy hack to stop the navigation bars box-zoom feature and
	# the panhandler interfering with each other. If both of these are
	# enabled at the same time then the panhandler will move the canvas
	# while the user draws a box, which doesn't work very well. This way,
	# the panhandler is only enabled when box zoom is disabled.
	#
	# Ideally the panhandler would support matplotlibs widgetLock, see:
	# https://github.com/ianhi/mpl-interactions/pull/243#issuecomment-1101523740
	self._navigation_toolbar._actions["zoom"].triggered.connect(
	lambda checked: self.toggle_panhandler(not checked)
	)

and wanted to pop in and say that if you transition to using mpl-pan-zoom which is the dedicated package where zoom_factory and panning behavior will live long term then I think the iwdget locking behavior is fixed by this PR: mpl-extensions/mpl-pan-zoom#2

n.b. panhandler -> PanManager when switching the packages.

[JamesWrigley]

Great, thank you very much for the hint and for your work :)